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2404.00877
Yikun Jiang
Ling-Yan Hung and Yikun Jiang
Building up quantum spacetimes with BCFT Legos
11 pages, 6 figures, expanded version of essay written for the Gravity Research Foundation 2024 Awards for Essays on Gravitation
null
null
null
hep-th cond-mat.str-el gr-qc math-ph math.MP quant-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Is it possible to read off the quantum gravity dual of a CFT directly from its operator algebra? In this essay, we present a step-by-step recipe synthesizing results and techniques from conformal bootstrap, topological symmetries, tensor networks, a novel symmetry-preserving real-space renormalization algorithm devised originally in lattice models, and the asymptotics of quantum $6j$ symbols, thereby providing an answer in the affirmative. Quantum 2D Liouville theory serves as a simple and explicit example, illustrating how the quantum gravitational path integral can be built up from local pieces of BCFT correlation functions, which we call the ``BCFT Legos''. The constructive map between gravity and CFT naturally and explicitly bridges local geometrical data, algebraic structures, and quantum entanglement, as envisaged by the $\it{It \, from \, Qubit}$ motto.
[ { "created": "Mon, 1 Apr 2024 03:14:36 GMT", "version": "v1" } ]
2024-04-02
[ [ "Hung", "Ling-Yan", "" ], [ "Jiang", "Yikun", "" ] ]
Is it possible to read off the quantum gravity dual of a CFT directly from its operator algebra? In this essay, we present a step-by-step recipe synthesizing results and techniques from conformal bootstrap, topological symmetries, tensor networks, a novel symmetry-preserving real-space renormalization algorithm devised originally in lattice models, and the asymptotics of quantum $6j$ symbols, thereby providing an answer in the affirmative. Quantum 2D Liouville theory serves as a simple and explicit example, illustrating how the quantum gravitational path integral can be built up from local pieces of BCFT correlation functions, which we call the ``BCFT Legos''. The constructive map between gravity and CFT naturally and explicitly bridges local geometrical data, algebraic structures, and quantum entanglement, as envisaged by the $\it{It \, from \, Qubit}$ motto.
18.498062
20.381113
18.864294
15.914186
18.630583
18.309441
19.338102
17.611897
18.162474
22.466183
17.666681
16.428717
17.030491
16.692993
16.228874
16.430702
16.308088
16.578634
17.118155
17.43796
15.689308
hep-th/0301098
Klaus Behrndt
Klaus Behrndt
Intersecting branes from 7-manifolds with G_2 holonomy
7 pages, Latex, talk presented at the 35th Symposium Ahrenshoop, August 2002
Fortsch.Phys. 51 (2003) 664-669
10.1002/prop.200310080
null
hep-th
null
In this talk I discuss intersecting brane configurations coming from explicit metrics with G_2 holonomy. An example of a 7-manifold which representing a R^3 bundle over a self-dual Einstein space is described and the potential appearing after compactification over the 6-d twistor space is derived.
[ { "created": "Wed, 15 Jan 2003 13:30:42 GMT", "version": "v1" } ]
2009-11-10
[ [ "Behrndt", "Klaus", "" ] ]
In this talk I discuss intersecting brane configurations coming from explicit metrics with G_2 holonomy. An example of a 7-manifold which representing a R^3 bundle over a self-dual Einstein space is described and the potential appearing after compactification over the 6-d twistor space is derived.
21.207378
16.362904
18.845629
16.839333
14.336787
18.57147
16.700666
16.187538
16.276695
21.922123
17.480968
17.530602
18.933838
17.922676
18.2773
17.008968
17.540821
17.274279
18.033957
19.399733
17.535418
hep-th/9410123
Jorge Stephany Ruiz
R.Gianvittorio, A.Restuccia and J.Stephany
A New Action Principle for Witten's Topological Field Theory
8 pages, SB/F-94-225
Phys. Lett. B347 (1995) 279
10.1016/0370-2693(95)00061-O
null
hep-th
null
In this letter a new gauge invariant, metric independent action is introduced from which Witten's Topological Quantum Field Theory may be obtained after gauge fixing using standard BRST techniques. In our model the BRST algebra of transformations, under which the effective action is invariant, close off-shell in distintion with what occurs in the one proposed by Labastida and Pernici. Our approach provides the geometrical principle for the quantum theory. We also compare our results with an alternative formulation presented by Baulieu and Singer.
[ { "created": "Tue, 18 Oct 1994 15:36:45 GMT", "version": "v1" } ]
2009-10-28
[ [ "Gianvittorio", "R.", "" ], [ "Restuccia", "A.", "" ], [ "Stephany", "J.", "" ] ]
In this letter a new gauge invariant, metric independent action is introduced from which Witten's Topological Quantum Field Theory may be obtained after gauge fixing using standard BRST techniques. In our model the BRST algebra of transformations, under which the effective action is invariant, close off-shell in distintion with what occurs in the one proposed by Labastida and Pernici. Our approach provides the geometrical principle for the quantum theory. We also compare our results with an alternative formulation presented by Baulieu and Singer.
16.233929
16.187769
15.764334
14.439137
15.789126
15.802028
14.953474
14.481936
15.222815
18.021013
14.902842
15.807306
15.319722
15.006101
15.255172
15.806029
15.339488
15.025153
15.268581
15.334325
14.365873
hep-th/9412096
Klaus Lang
Werner Ruehl
Double Scaling Limits and Catastrophes of the zerodimensional O(N) Vector Sigma Model: The A-Series
20 pages, LaTeX, two figures available from author on request
null
null
KL-TH-94/21
hep-th
null
We evaluate the partition functions in the neighbourhood of catastrophes by saddle point integration and express them in terms of generalized Airy functions.
[ { "created": "Mon, 12 Dec 1994 10:26:57 GMT", "version": "v1" } ]
2009-09-25
[ [ "Ruehl", "Werner", "" ] ]
We evaluate the partition functions in the neighbourhood of catastrophes by saddle point integration and express them in terms of generalized Airy functions.
18.348063
11.65333
17.682261
14.670738
14.108267
12.408785
12.092773
12.810744
11.491945
16.310053
13.664831
14.337876
15.568966
14.59986
15.101307
14.287572
13.502731
14.298333
15.283185
16.051872
14.37511
1106.5503
Yu Nakayama
Yu Nakayama and Hirosi Ooguri
Comments on Worldsheet Description of the Omega Background
11 pages
Int. J. Mod. Phys. A 27 (2012) 1250122
10.1142/S0217751X12501229
CALT-68-2837; IPMU11-0094
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Nekrasov's partition function is defined on a flat bundle of R^4 over S^1 called the Omega background. When the fibration is self-dual, the partition function is known to be equal to the topological string partition function, which computes scattering amplitudes of self-dual gravitons and graviphotons in type II superstring compactified on a Calabi-Yau manifold. We propose a generalization of this correspondence when the fibration is not necessarily self-dual.
[ { "created": "Mon, 27 Jun 2011 20:00:04 GMT", "version": "v1" } ]
2012-10-08
[ [ "Nakayama", "Yu", "" ], [ "Ooguri", "Hirosi", "" ] ]
Nekrasov's partition function is defined on a flat bundle of R^4 over S^1 called the Omega background. When the fibration is self-dual, the partition function is known to be equal to the topological string partition function, which computes scattering amplitudes of self-dual gravitons and graviphotons in type II superstring compactified on a Calabi-Yau manifold. We propose a generalization of this correspondence when the fibration is not necessarily self-dual.
5.962804
5.241386
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5.076295
5.330801
5.028001
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6.135088
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4.891213
4.862617
5.004999
4.98027
4.72427
4.84335
4.928362
4.97331
4.908866
hep-th/9310096
P. K. Ghosh
Pijush K. Ghosh
Bogomol'nyi Equations of Maxwell-Chern-Simons vortices from a generalized Abelian Higgs Model
30 pages(4 figures not included), RevTeX, IP/BBSR/93-62
Phys.Rev. D49 (1994) 5458-5468
10.1103/PhysRevD.49.5458
null
hep-th
null
We consider a generalization of the abelian Higgs model with a Chern-Simons term by modifying two terms of the usual Lagrangian. We multiply a dielectric function with the Maxwell kinetic energy term and incorporate nonminimal interaction by considering generalized covariant derivative. We show that for a particular choice of the dielectric function this model admits both topological as well as nontopological charged vortices satisfying Bogomol'nyi bound for which the magnetic flux, charge and angular momentum are not quantized. However the energy for the topolgical vortices is quantized and in each sector these topological vortex solutions are infinitely degenerate. In the nonrelativistic limit, this model admits static self-dual soliton solutions with nonzero finite energy configuration. For the whole class of dielectric function for which the nontopological vortices exists in the relativistic theory, the charge density satisfies the same Liouville equation in the nonrelativistic limit.
[ { "created": "Sun, 17 Oct 1993 19:16:57 GMT", "version": "v1" } ]
2009-10-22
[ [ "Ghosh", "Pijush K.", "" ] ]
We consider a generalization of the abelian Higgs model with a Chern-Simons term by modifying two terms of the usual Lagrangian. We multiply a dielectric function with the Maxwell kinetic energy term and incorporate nonminimal interaction by considering generalized covariant derivative. We show that for a particular choice of the dielectric function this model admits both topological as well as nontopological charged vortices satisfying Bogomol'nyi bound for which the magnetic flux, charge and angular momentum are not quantized. However the energy for the topolgical vortices is quantized and in each sector these topological vortex solutions are infinitely degenerate. In the nonrelativistic limit, this model admits static self-dual soliton solutions with nonzero finite energy configuration. For the whole class of dielectric function for which the nontopological vortices exists in the relativistic theory, the charge density satisfies the same Liouville equation in the nonrelativistic limit.
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7.36537
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7.648753
8.451272
7.744571
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7.706872
8.005831
7.753474
7.498059
8.172188
7.841319
2103.15168
Balthazar de Vaulchier
Herv\'e Partouche, Nicolaos Toumbas and Balthazar de Vaulchier
Wavefunction of the universe: Reparametrization invariance and field redefinitions of the minisuperspace path integral
1+56 pages, 1 figure
null
10.1016/j.nuclphysb.2021.115600
CPHT-RR027.032021
hep-th gr-qc
http://creativecommons.org/licenses/by/4.0/
We consider the Hartle-Hawking wavefunction of the universe defined as a Euclidean path integral that satisfies the "no-boundary proposal." We focus on the simplest minisuperspace model that comprises a single scale factor degree of freedom and a positive cosmological constant. The model can be seen as a non-linear $\sigma$-model with a line-segment base. We reduce the path integral over the lapse function to an integral over the proper length of the base and use diffeomorphism-invariant measures for the ghosts and the scale factor. As a result, the gauge-fixed path integral is independent of the gauge. However, we point out that all field redefinitions of the scale factor degree of freedom yield different choices of gauge-invariant path-integral measures. For each prescription, we compute the wavefunction at the semi-classical level and find a different result. We resolve in each case the ambiguity in the form of the Wheeler-DeWitt equation at this level of approximation. By imposing that the Hamiltonians associated with these possibly distinct quantum theories are Hermitian, we determine the inner products of the corresponding Hilbert spaces and find that they lead to a universal norm, at least semi-classically. Quantum predictions are thus independent of the prescription at this level of approximation. Finally, all wavefunctions of the Hilbert spaces of the minisuperspace model we consider turn out to be non-normalizable, including the no-boundary states.
[ { "created": "Sun, 28 Mar 2021 16:33:26 GMT", "version": "v1" }, { "created": "Thu, 4 Nov 2021 10:54:19 GMT", "version": "v2" } ]
2021-11-17
[ [ "Partouche", "Hervé", "" ], [ "Toumbas", "Nicolaos", "" ], [ "de Vaulchier", "Balthazar", "" ] ]
We consider the Hartle-Hawking wavefunction of the universe defined as a Euclidean path integral that satisfies the "no-boundary proposal." We focus on the simplest minisuperspace model that comprises a single scale factor degree of freedom and a positive cosmological constant. The model can be seen as a non-linear $\sigma$-model with a line-segment base. We reduce the path integral over the lapse function to an integral over the proper length of the base and use diffeomorphism-invariant measures for the ghosts and the scale factor. As a result, the gauge-fixed path integral is independent of the gauge. However, we point out that all field redefinitions of the scale factor degree of freedom yield different choices of gauge-invariant path-integral measures. For each prescription, we compute the wavefunction at the semi-classical level and find a different result. We resolve in each case the ambiguity in the form of the Wheeler-DeWitt equation at this level of approximation. By imposing that the Hamiltonians associated with these possibly distinct quantum theories are Hermitian, we determine the inner products of the corresponding Hilbert spaces and find that they lead to a universal norm, at least semi-classically. Quantum predictions are thus independent of the prescription at this level of approximation. Finally, all wavefunctions of the Hilbert spaces of the minisuperspace model we consider turn out to be non-normalizable, including the no-boundary states.
7.427887
7.885362
8.091561
7.792523
7.702581
8.24334
8.455609
7.714575
7.613643
8.670543
7.548389
7.507461
7.508845
7.46637
7.357011
7.473063
7.460058
7.400502
7.546886
7.545471
7.365494
2003.06823
Rafael I. Nepomechie
Rafael I. Nepomechie
The $A_m^{(1)}$ Q-system
13 pages, v2: references added, and appendix removed; v3: more references added, version to appear in Int. J. Mod. Phys. Lett. A
null
10.1142/S0217732320502600
UMTG-307
hep-th math-ph math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a Q-system for the $A_m^{(1)}$ quantum integrable spin chain. We also find compact determinant expressions for all the Q-functions, both for the rational and trigonometric cases.
[ { "created": "Sun, 15 Mar 2020 13:16:13 GMT", "version": "v1" }, { "created": "Tue, 24 Mar 2020 17:03:01 GMT", "version": "v2" }, { "created": "Sat, 8 Aug 2020 13:48:17 GMT", "version": "v3" } ]
2020-08-11
[ [ "Nepomechie", "Rafael I.", "" ] ]
We propose a Q-system for the $A_m^{(1)}$ quantum integrable spin chain. We also find compact determinant expressions for all the Q-functions, both for the rational and trigonometric cases.
10.687893
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13.369913
8.938531
6.994255
7.998803
8.084134
7.814006
7.261037
11.660257
7.960433
8.122005
11.134355
8.464309
7.831281
7.628992
8.149872
8.122078
8.000534
9.930364
7.696561
2207.12681
Yuan Zhong
Yuan Zhong
Singular P\"oschl-Teller II potentials and gravitating kinks
13 pages, 2 figures. Minor revision of the text, Fig. 2 is redrawn, and some new references are added
JHEP09(2022)165
10.1007/JHEP09(2022)165
null
hep-th
http://creativecommons.org/licenses/by/4.0/
We report a two-dimensional (2D) gravitating kink model, for which both the background field equations and the linear perturbation equation are exactly solvable. The background solution describes a sine-Gordon kink that interpolating between two asymptotic AdS$_2$ spaces, and can be regarded as a 2D thick brane world solution. The linear perturbation equation can be recasted into a Schr\"odinger-like equation with singular P\"oschl-Teller II potentials. There is no tachyonic state in the spectrum, so the solution is stable against the linear perturbations. Besides, there can be $n=0,1,2,\cdots$ bounded vibrational modes around the kink. The number of these vibrational modes varies with model parameters.
[ { "created": "Tue, 26 Jul 2022 06:48:06 GMT", "version": "v1" }, { "created": "Sat, 30 Jul 2022 04:35:15 GMT", "version": "v2" } ]
2022-09-22
[ [ "Zhong", "Yuan", "" ] ]
We report a two-dimensional (2D) gravitating kink model, for which both the background field equations and the linear perturbation equation are exactly solvable. The background solution describes a sine-Gordon kink that interpolating between two asymptotic AdS$_2$ spaces, and can be regarded as a 2D thick brane world solution. The linear perturbation equation can be recasted into a Schr\"odinger-like equation with singular P\"oschl-Teller II potentials. There is no tachyonic state in the spectrum, so the solution is stable against the linear perturbations. Besides, there can be $n=0,1,2,\cdots$ bounded vibrational modes around the kink. The number of these vibrational modes varies with model parameters.
7.516185
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6.223079
6.21036
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6.838444
6.498879
6.534361
6.726938
6.371047
6.37096
6.597905
6.845496
6.247505
1005.3581
Motomu Tsuda
Kazunari Shima and Motomu Tsuda
Phase Transition of NLSUSY Space-Time and Unity of Nature
12 pages, Talk given at Scale and Duality in Quantum Science Workshop, Constituents, Fundamental Forces and Symmetries of the Universe 04-06 November, 2009, RIMS-YITP, Kyoto University, Kyoto
null
null
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The mysterious relation between the large scale structure of the universe and the tiny (Planck) scale structure of the particle physics, e.g. the observed mysterious relation between the (dark) energy density (and the dark matter) of the universe and the origin of the tiny neutrino mass (and the SUSY breaking mass scale) of the particle physics may be explained simply by the nonlinear supersymmmetric general relativity theory (NLSUSY GR).
[ { "created": "Thu, 20 May 2010 03:12:49 GMT", "version": "v1" } ]
2010-05-21
[ [ "Shima", "Kazunari", "" ], [ "Tsuda", "Motomu", "" ] ]
The mysterious relation between the large scale structure of the universe and the tiny (Planck) scale structure of the particle physics, e.g. the observed mysterious relation between the (dark) energy density (and the dark matter) of the universe and the origin of the tiny neutrino mass (and the SUSY breaking mass scale) of the particle physics may be explained simply by the nonlinear supersymmmetric general relativity theory (NLSUSY GR).
9.713393
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10.094885
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9.255616
8.575482
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10.787559
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8.890698
9.100241
9.15862
9.140126
9.370965
9.387023
9.071511
9.326947
9.2708
9.582159
hep-th/0408093
Mohammad Shikakhwa
A.Albeed and M.S.Shikakhwa
The Spin Interaction of a Dirac Particle in an Aharonov-Bohm Potential in First Order Scattering
9 pages, two figures.Published version. Title and content slightly modified
Int.J.Theor. Phys. vol.46, pp 405 (2007)
null
null
hep-th math-ph math.MP quant-ph
null
For a Dirac particle in an Aharonov-Bohm (AB) potential, it is shown that the spin interaction (SI) operator which governs the transitions in the spin sector of the first order S-matrix is related to one of the generators of rotation in the spin space of the particle. This operator, which is given by the projection of the spin operator $\mathbf{\Sigma}$ along the direction of the total momentum of the system, and the two operators constructed from the projections of the $\mathbf{\Sigma}$ operator along the momentum transfer and the z-directions close the SU(2) algebra.It is suggested, then, that these two directions of the total momentum and the momentum transfer form some sort of natural intrinsic directions in terms of which the spin dynamics of the scattering process at first order can be formulated conveniently. A formulation and an interpretation of the conservation of helicity at first order using the spin projection operators along these directions is presented .
[ { "created": "Wed, 11 Aug 2004 19:55:42 GMT", "version": "v1" }, { "created": "Tue, 13 Nov 2007 13:12:31 GMT", "version": "v2" } ]
2007-11-13
[ [ "Albeed", "A.", "" ], [ "Shikakhwa", "M. S.", "" ] ]
For a Dirac particle in an Aharonov-Bohm (AB) potential, it is shown that the spin interaction (SI) operator which governs the transitions in the spin sector of the first order S-matrix is related to one of the generators of rotation in the spin space of the particle. This operator, which is given by the projection of the spin operator $\mathbf{\Sigma}$ along the direction of the total momentum of the system, and the two operators constructed from the projections of the $\mathbf{\Sigma}$ operator along the momentum transfer and the z-directions close the SU(2) algebra.It is suggested, then, that these two directions of the total momentum and the momentum transfer form some sort of natural intrinsic directions in terms of which the spin dynamics of the scattering process at first order can be formulated conveniently. A formulation and an interpretation of the conservation of helicity at first order using the spin projection operators along these directions is presented .
9.713678
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9.448721
9.328417
9.516829
9.356185
9.097935
9.509811
0803.3304
Boris Kosyakov
B. P. Kosyakov
Electromagnetic radiation in even-dimensional spacetimes
12 pages, no figures, this paper is dedicated to Prof. J. L. Buchbinder in celebration of his sixtieth birthday; v2: minor misprints are corrected, a further relevant reference is added
Int.J.Mod.Phys.A23:4695-4708,2008
10.1142/S0217751X08041451
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The basic concepts and mathematical constructions of the Maxwell--Lorentz electrodynamics in flat spacetime of an arbitrary even dimension $d=2n$ are briefly reviewed. We show that the retarded field strength ${\cal F}^{(2n)}_{\mu\nu}$ due to a point charge living in a $2n$-dimensional world can be algebraically expressed in terms of the retarded vector potentials ${\cal A}^{(2m)}_{\mu}$ generated by this charge as if it were accommodated in $2m$-dimensional worlds nearby, $2\le m\le n+1$. With this finding, the rate of radiated energy-momentum of the electromagnetic field takes a compact form.
[ { "created": "Sun, 23 Mar 2008 06:00:19 GMT", "version": "v1" }, { "created": "Mon, 31 Mar 2008 17:45:56 GMT", "version": "v2" } ]
2008-12-25
[ [ "Kosyakov", "B. P.", "" ] ]
The basic concepts and mathematical constructions of the Maxwell--Lorentz electrodynamics in flat spacetime of an arbitrary even dimension $d=2n$ are briefly reviewed. We show that the retarded field strength ${\cal F}^{(2n)}_{\mu\nu}$ due to a point charge living in a $2n$-dimensional world can be algebraically expressed in terms of the retarded vector potentials ${\cal A}^{(2m)}_{\mu}$ generated by this charge as if it were accommodated in $2m$-dimensional worlds nearby, $2\le m\le n+1$. With this finding, the rate of radiated energy-momentum of the electromagnetic field takes a compact form.
6.964162
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7.356163
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6.827565
6.507417
6.443935
6.720264
6.80247
0707.0405
Orlando Panella
O. Panella
Casimir-Polder intermolecular forces in minimal length theories
1 Figure. Version published by Physical Review D. Few references added, typos corrected
Phys.Rev.D76:045012,2007
10.1103/PhysRevD.76.045012
null
hep-th hep-ph
null
Generalized uncertainty relations are known to provide a minimal length $\hbar\sqrt{\beta}$. The effect of such minimal length in the Casimir-Polder interactions between neutral atoms (molecules) is studied. The first order correction term in the minimal uncertainty parameter is derived and found to describe an attractive potential scaling as $r^{-9}$ as opposed to the well known $r^{-7}$ long range retarded potential.
[ { "created": "Tue, 3 Jul 2007 12:40:01 GMT", "version": "v1" }, { "created": "Fri, 21 Sep 2007 14:51:03 GMT", "version": "v2" } ]
2008-11-26
[ [ "Panella", "O.", "" ] ]
Generalized uncertainty relations are known to provide a minimal length $\hbar\sqrt{\beta}$. The effect of such minimal length in the Casimir-Polder interactions between neutral atoms (molecules) is studied. The first order correction term in the minimal uncertainty parameter is derived and found to describe an attractive potential scaling as $r^{-9}$ as opposed to the well known $r^{-7}$ long range retarded potential.
9.696186
10.542198
9.155687
8.731704
9.894698
10.848598
9.616961
9.205861
9.230088
8.665978
9.162837
8.756908
8.755096
8.244106
8.398715
8.6852
9.046867
8.896742
8.905152
9.069873
8.886865
2312.08275
Luca Capizzi
Luca Capizzi, Andrei Rotaru
Thermal entanglement in conformal junctions
Minor changes. Published version
JHEP05 (2024) 010
null
null
hep-th cond-mat.stat-mech quant-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider a quantum junction described by a 1+1-dimensional boundary conformal field theory (BCFT). Our analysis focuses on correlations emerging at finite temperature, achieved through the computation of entanglement measures. Our approach relies on characterizing correlation functions of twist fields using BCFT techniques. We provide non-perturbative predictions for the crossover between low and high temperatures. An intriguing interplay between bulk and boundary effects, associated with the bulk/boundary scaling dimensions of the fields above, is found. In particular, the entanglement entropy is primarily influenced by bulk thermal fluctuations, exhibiting extensiveness for large system sizes with a prefactor independent of the scattering properties of the defect. In contrast, negativity is governed by fluctuations across the entangling points only, adhering to an area law; its value depends non-trivially on the defect, and it diverges logarithmically as the temperature is decreased. To validate our predictions, we numerically check them for free fermions on the lattice, finding good agreement.
[ { "created": "Wed, 13 Dec 2023 16:43:56 GMT", "version": "v1" }, { "created": "Sat, 25 May 2024 07:13:25 GMT", "version": "v2" } ]
2024-05-28
[ [ "Capizzi", "Luca", "" ], [ "Rotaru", "Andrei", "" ] ]
We consider a quantum junction described by a 1+1-dimensional boundary conformal field theory (BCFT). Our analysis focuses on correlations emerging at finite temperature, achieved through the computation of entanglement measures. Our approach relies on characterizing correlation functions of twist fields using BCFT techniques. We provide non-perturbative predictions for the crossover between low and high temperatures. An intriguing interplay between bulk and boundary effects, associated with the bulk/boundary scaling dimensions of the fields above, is found. In particular, the entanglement entropy is primarily influenced by bulk thermal fluctuations, exhibiting extensiveness for large system sizes with a prefactor independent of the scattering properties of the defect. In contrast, negativity is governed by fluctuations across the entangling points only, adhering to an area law; its value depends non-trivially on the defect, and it diverges logarithmically as the temperature is decreased. To validate our predictions, we numerically check them for free fermions on the lattice, finding good agreement.
11.077336
12.192432
12.177618
11.252684
12.054377
11.459737
11.549875
12.080815
11.967298
13.953086
10.874999
11.2364
12.009096
11.451068
11.583099
11.750234
11.514001
11.517908
11.151637
12.179461
11.094292
hep-th/9910248
Paul S. Aspinwall
Paul S. Aspinwall and M. Ronen Plesser
Heterotic String Corrections from the Dual Type II String
21 pages, 5 figures, refs added
JHEP 0004:025,2000
10.1088/1126-6708/2000/04/025
DUKE-CGTP-99-08
hep-th
null
We introduce a method of using the a dual type IIA string to compute alpha'-corrections to the moduli space of heterotic string compactifications. In particular we study the hypermultiplet moduli space of a heterotic string on a K3 surface. One application of this machinery shows that type IIB strings compactified on a Calabi-Yau space suffer from worldsheet instantons, spacetime instantons and, in addition, "mixed" instantons which in a sense are both worldsheet and spacetime. As another application we look at the hyperkaehler limit of the moduli space in which the K3 surface becomes an ALE space. This is a variant of the "geometric engineering" method used for vector multiplet moduli space and should be applicable to a wide range of examples. In particular we reproduce Sen and Witten's result for the heterotic string on an A1 singularity and a trivial bundle and generalize this to a collection of E8 point-like instantons on an ALE space.
[ { "created": "Fri, 29 Oct 1999 19:15:47 GMT", "version": "v1" }, { "created": "Fri, 19 Nov 1999 19:25:11 GMT", "version": "v2" } ]
2011-10-11
[ [ "Aspinwall", "Paul S.", "" ], [ "Plesser", "M. Ronen", "" ] ]
We introduce a method of using the a dual type IIA string to compute alpha'-corrections to the moduli space of heterotic string compactifications. In particular we study the hypermultiplet moduli space of a heterotic string on a K3 surface. One application of this machinery shows that type IIB strings compactified on a Calabi-Yau space suffer from worldsheet instantons, spacetime instantons and, in addition, "mixed" instantons which in a sense are both worldsheet and spacetime. As another application we look at the hyperkaehler limit of the moduli space in which the K3 surface becomes an ALE space. This is a variant of the "geometric engineering" method used for vector multiplet moduli space and should be applicable to a wide range of examples. In particular we reproduce Sen and Witten's result for the heterotic string on an A1 singularity and a trivial bundle and generalize this to a collection of E8 point-like instantons on an ALE space.
8.66829
8.362208
10.367157
8.026177
8.517997
8.487993
8.61363
8.249806
8.630809
10.938446
7.945643
8.421732
8.76564
8.47545
8.28057
8.217916
8.455186
8.161199
8.356895
8.559358
8.333077
1809.04381
Cheng-Yang Lee
Cheng-Yang Lee
Fermionic degeneracy and non-local contributions in flag-dipole spinors and mass dimension one fermions
8 pages. Published in EPJC
Eur. Phys. J. C (2021) 81:90
10.1140/epjc/s10052-021-08860-z
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We construct a mass dimension one fermionic field associated with flag-dipole spinors. These spinors are related to Elko (flag-pole spinors) by a one-parameter matrix transformation $\mathcal{Z}(z)$ where $z$ is a complex number. The theory is non-local and non-covariant. While it is possible to obtain a Lorentz-invariant theory via $\tau$-deformation, we choose to study the effects of non-locality and non-covariance. Our motivation for doing so is explained. We show that a fermionic field with $|z|\neq1$ and $|z|=1$ are physically equivalent. But for fermionic fields with more than one value of $z$, their interactions are $z$-dependent thus introducing an additional fermionic degeneracy that is absent in the Lorentz-invariant theory. We study the fermionic self-interaction and the local $U(1)$ interaction. In the process, we obtained non-local contributions for fermionic self-interaction that have previously been neglected. For the local $U(1)$ theory, the interactions contain time derivatives that renders the interacting density non-commutative at space-like separation. We show that this problem can be resolved by working in the temporal gauge. This issue is also discussed in the context of gravity.
[ { "created": "Wed, 12 Sep 2018 12:34:06 GMT", "version": "v1" }, { "created": "Wed, 3 Feb 2021 07:18:20 GMT", "version": "v2" } ]
2021-02-04
[ [ "Lee", "Cheng-Yang", "" ] ]
We construct a mass dimension one fermionic field associated with flag-dipole spinors. These spinors are related to Elko (flag-pole spinors) by a one-parameter matrix transformation $\mathcal{Z}(z)$ where $z$ is a complex number. The theory is non-local and non-covariant. While it is possible to obtain a Lorentz-invariant theory via $\tau$-deformation, we choose to study the effects of non-locality and non-covariance. Our motivation for doing so is explained. We show that a fermionic field with $|z|\neq1$ and $|z|=1$ are physically equivalent. But for fermionic fields with more than one value of $z$, their interactions are $z$-dependent thus introducing an additional fermionic degeneracy that is absent in the Lorentz-invariant theory. We study the fermionic self-interaction and the local $U(1)$ interaction. In the process, we obtained non-local contributions for fermionic self-interaction that have previously been neglected. For the local $U(1)$ theory, the interactions contain time derivatives that renders the interacting density non-commutative at space-like separation. We show that this problem can be resolved by working in the temporal gauge. This issue is also discussed in the context of gravity.
9.315918
9.246736
8.987795
8.750672
9.190902
8.729154
9.442706
8.554129
8.919771
10.189976
8.783481
8.797353
8.916614
8.710098
8.937029
8.945183
8.882082
9.075442
8.74422
8.855524
8.966245
1206.6127
Josua Groeger
Josua Groeger
Vertex Operators of Super Wilson Loops
11 pages
Phys. Rev. D 86, 105039 (2012)
10.1103/PhysRevD.86.105039
null
hep-th math.DG
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the supersymmetric Wilson loop as introduced by Caron-Huot, which attaches to lightlike polygons certain edge and vertex operators, whose shape is determined by supersymmetry constraints. We state explicit formulas for the vertex operators to all orders in the Gra{\ss}mann expansion, thus filling a gap in the literature. This is achieved by deriving a recursion formula out of the supersymmetry constraints.
[ { "created": "Tue, 26 Jun 2012 21:37:38 GMT", "version": "v1" }, { "created": "Thu, 28 Jun 2012 19:16:54 GMT", "version": "v2" }, { "created": "Mon, 5 Nov 2012 11:47:33 GMT", "version": "v3" } ]
2013-01-24
[ [ "Groeger", "Josua", "" ] ]
We study the supersymmetric Wilson loop as introduced by Caron-Huot, which attaches to lightlike polygons certain edge and vertex operators, whose shape is determined by supersymmetry constraints. We state explicit formulas for the vertex operators to all orders in the Gra{\ss}mann expansion, thus filling a gap in the literature. This is achieved by deriving a recursion formula out of the supersymmetry constraints.
16.292788
13.884169
14.820557
13.93435
11.971533
14.565058
15.059291
12.67456
14.547972
16.381632
15.616103
13.77936
13.953229
13.246854
13.815924
14.334514
13.665725
13.710009
13.689676
13.502202
13.644543
hep-th/9302069
null
S. Pratik Khastgir and Jnanadeva Maharana
Topology changing processes and symmetries of string effective action
23 pages, IP/BBSR/93-8
Nucl.Phys. B406 (1993) 145-164
10.1016/0550-3213(93)90164-K
null
hep-th
null
Wormhole solutions corresponding to space-time geometries $R^1\times S^1\times S^2$ and $R^1\times S^3$ are obtained from reduced string effective action and the action is written in a manifestly $O(d,d)$ invariant form. A general treatment is given for obtaining wormhole solutions of different topologies from dimensional reduction. For specific ansatz of internal metric and antisymmetric field the reduced action is shown to have a global $SL(2,C)$ symmetry. The $SL(2,C)$ and duality symmetries have been exploited to generate new configurations of internal fields which produce wormhole solutions in four space-time dimensions. The $SL(2,C)$ symmetry discussed in this paper arises due to specific form of the moduli and these transformations belong to a subgroup of $O(d,d)$ global symmetry.
[ { "created": "Sun, 14 Feb 1993 22:08:23 GMT", "version": "v1" } ]
2009-10-22
[ [ "Khastgir", "S. Pratik", "" ], [ "Maharana", "Jnanadeva", "" ] ]
Wormhole solutions corresponding to space-time geometries $R^1\times S^1\times S^2$ and $R^1\times S^3$ are obtained from reduced string effective action and the action is written in a manifestly $O(d,d)$ invariant form. A general treatment is given for obtaining wormhole solutions of different topologies from dimensional reduction. For specific ansatz of internal metric and antisymmetric field the reduced action is shown to have a global $SL(2,C)$ symmetry. The $SL(2,C)$ and duality symmetries have been exploited to generate new configurations of internal fields which produce wormhole solutions in four space-time dimensions. The $SL(2,C)$ symmetry discussed in this paper arises due to specific form of the moduli and these transformations belong to a subgroup of $O(d,d)$ global symmetry.
7.460339
6.225727
7.631903
6.769428
7.599081
7.073629
7.134455
6.953064
6.713019
8.304342
6.558777
7.033011
7.205653
7.09613
7.316175
7.043608
6.819973
7.238531
6.928025
7.202667
6.945351
1005.3157
Nobuyuki Fukui
Nobuyuki Fukui, Kei-Ichi Kondo, Akihiro Shibata and Toru Shinohara
Jackiw-Nohl-Rebbi two-instanton as a source of magnetic monopole loop
11 pages, 3 figures
Phys.Rev.D82:045015,2010
10.1103/PhysRevD.82.045015
CHIBA-EP-183/KEK Preprint 2010-8
hep-th hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We demonstrate that a Jackiw-Nohl-Rebbi solution as the most general two-instanton generates a circular loop of magnetic monopole in four-dimensional Euclidean SU(2) Yang-Mills theory, in contrast to the one-instanton solution in the regular gauge for which no such magnetic monopole loops exist. These results together with our previous result indicate that two-instanton solution and two-meron solution with the same asymptotic behavior in the long distance are responsible for quark confinement based on the dual superconductivity picture.
[ { "created": "Tue, 18 May 2010 11:01:21 GMT", "version": "v1" } ]
2014-11-21
[ [ "Fukui", "Nobuyuki", "" ], [ "Kondo", "Kei-Ichi", "" ], [ "Shibata", "Akihiro", "" ], [ "Shinohara", "Toru", "" ] ]
We demonstrate that a Jackiw-Nohl-Rebbi solution as the most general two-instanton generates a circular loop of magnetic monopole in four-dimensional Euclidean SU(2) Yang-Mills theory, in contrast to the one-instanton solution in the regular gauge for which no such magnetic monopole loops exist. These results together with our previous result indicate that two-instanton solution and two-meron solution with the same asymptotic behavior in the long distance are responsible for quark confinement based on the dual superconductivity picture.
10.443979
8.755163
11.179586
8.943012
10.311801
8.566488
8.823034
9.059053
9.17903
12.152246
8.867347
9.791787
9.617002
9.594625
10.220319
9.686324
9.768285
10.11284
9.606571
10.417077
9.897067
hep-th/0312150
Leonid Slad
L.M. Slad
Mass Spectra in the Doubly Symmetric Theory of Infinite-Component Fields
14 pages, 4 figures, 1 table, LaTeX. V3 is a journal version with a modified Introduction and with another translation into English language of the title and the text
Theor.Math.Phys. 142 (2005) 15-28; Teor.Mat.Fiz. 142 (2005) 21-36
null
null
hep-th
null
We consider the problem of the characteristics of mass spectra in the doubly symmetric theory of fields transforming under the proper Lorentz group representations decomposable into an infinite direct sum of finite-dimensional irreducible representations. We show that there exists a range of free parameters of the theory where the mass spectra of fermions are quite satisfactory from the physical standpoint and correspond to the picture expected in the parton model of hadrons.
[ { "created": "Sat, 13 Dec 2003 10:15:33 GMT", "version": "v1" }, { "created": "Sat, 20 Dec 2003 10:27:34 GMT", "version": "v2" }, { "created": "Tue, 15 Mar 2005 10:18:16 GMT", "version": "v3" } ]
2007-05-23
[ [ "Slad", "L. M.", "" ] ]
We consider the problem of the characteristics of mass spectra in the doubly symmetric theory of fields transforming under the proper Lorentz group representations decomposable into an infinite direct sum of finite-dimensional irreducible representations. We show that there exists a range of free parameters of the theory where the mass spectra of fermions are quite satisfactory from the physical standpoint and correspond to the picture expected in the parton model of hadrons.
15.066078
12.696875
15.740756
12.636126
12.033656
12.533845
14.288164
12.458169
11.720922
15.919629
12.767961
14.131414
13.551193
13.378816
14.193324
14.004491
14.340762
13.894527
13.80966
14.332179
13.755844
hep-th/9601047
Valerie Nowak
Stephen L. Adler
Projective Group Representations in Quaternionic Hilbert Space
16 pages, no figures, plain Tex
J.Math.Phys. 37 (1996) 2352-2360
10.1063/1.531514
IASSNS-HEP 96/02
hep-th
null
We extend the discussion of projective group representations in quaternionic Hilbert space which was given in our recent book. The associativity condition for quaternionic projective representations is formulated in terms of unitary operators and then analyzed in terms of their generator structure. The multi--centrality and centrality assumptions are also analyzed in generator terms, and implications of this analysis are discussed.
[ { "created": "Wed, 10 Jan 1996 20:42:40 GMT", "version": "v1" } ]
2009-10-30
[ [ "Adler", "Stephen L.", "" ] ]
We extend the discussion of projective group representations in quaternionic Hilbert space which was given in our recent book. The associativity condition for quaternionic projective representations is formulated in terms of unitary operators and then analyzed in terms of their generator structure. The multi--centrality and centrality assumptions are also analyzed in generator terms, and implications of this analysis are discussed.
17.801958
20.113913
17.730036
16.081268
20.105396
17.041595
17.527239
17.628378
16.188904
20.290289
17.311262
15.993289
17.499556
17.495842
16.974035
16.103544
16.709181
17.259638
17.034668
17.9191
16.263922
hep-th/9112018
Ayrton Zadra
L. Alvarez-Gaume, H. Itoyama, J.L. Manes and A. Zadra
Superloop Equations and Two Dimensional Supergravity
34 pages
Int.J.Mod.Phys. A7 (1992) 5337-5368
10.1142/S0217751X92002441
null
hep-th
null
We propose a discrete model whose continuum limit reproduces the string susceptibility and the scaling dimensions of $(2,4m)$-minimal superconformal models coupled to $2D$-supergravity. The basic assumption in our presentation is a set of super-Virasoro constraints imposed on the partition function. We recover the Neveu-Schwarz and Ramond sectors of the theory, and we are also able to evaluate all planar loop correlation functions in the continuum limit. We find evidence to identify the integrable hierarchy of non-linear equations describing the double scaling limit as a supersymmetric generalization of KP studied by Rabin.
[ { "created": "Mon, 9 Dec 1991 17:18:03 GMT", "version": "v1" } ]
2015-06-26
[ [ "Alvarez-Gaume", "L.", "" ], [ "Itoyama", "H.", "" ], [ "Manes", "J. L.", "" ], [ "Zadra", "A.", "" ] ]
We propose a discrete model whose continuum limit reproduces the string susceptibility and the scaling dimensions of $(2,4m)$-minimal superconformal models coupled to $2D$-supergravity. The basic assumption in our presentation is a set of super-Virasoro constraints imposed on the partition function. We recover the Neveu-Schwarz and Ramond sectors of the theory, and we are also able to evaluate all planar loop correlation functions in the continuum limit. We find evidence to identify the integrable hierarchy of non-linear equations describing the double scaling limit as a supersymmetric generalization of KP studied by Rabin.
12.679541
11.230582
14.777583
11.480643
9.807102
10.894375
10.618315
11.609749
10.870561
19.082514
10.469085
11.91205
13.854155
11.970559
11.746758
11.123118
11.67597
12.090898
12.053563
14.150383
11.79583
1106.5141
Bin Chen
Bin Chen, Jiang Long and Jun-bao Wu
Spin-3 Topological Massive Gravity
19 pages. Arguments improved,references added, published version
Phys. Lett. B705(2011)513-520
10.1016/j.physletb.2011.10.044
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper, we study the spin-3 topological massive gravity(TMG), paying special attention to its properties at the chiral point. We propose an action describing the high spin fields coupled to TMG. We discuss the spin-3 fluctuations around the AdS$_3$ vacuum and find that there is an extra local massive mode, besides the left-moving and right-moving boundary massless modes. At the chiral point, such extra mode becomes massless and degenerates with the left-moving mode. We show that at the chiral point the only degrees of freedom in the theory are the boundary right-moving graviton and spin-3 field. We conjecture that spin-3 chiral gravity with Brown-Henneaux boundary condition is holographically dual to 2D chiral CFT with classical $W_3$ algebra and central charge $c_R=3l/G$.
[ { "created": "Sat, 25 Jun 2011 14:51:59 GMT", "version": "v1" }, { "created": "Tue, 1 Nov 2011 10:24:39 GMT", "version": "v2" } ]
2020-04-29
[ [ "Chen", "Bin", "" ], [ "Long", "Jiang", "" ], [ "Wu", "Jun-bao", "" ] ]
In this paper, we study the spin-3 topological massive gravity(TMG), paying special attention to its properties at the chiral point. We propose an action describing the high spin fields coupled to TMG. We discuss the spin-3 fluctuations around the AdS$_3$ vacuum and find that there is an extra local massive mode, besides the left-moving and right-moving boundary massless modes. At the chiral point, such extra mode becomes massless and degenerates with the left-moving mode. We show that at the chiral point the only degrees of freedom in the theory are the boundary right-moving graviton and spin-3 field. We conjecture that spin-3 chiral gravity with Brown-Henneaux boundary condition is holographically dual to 2D chiral CFT with classical $W_3$ algebra and central charge $c_R=3l/G$.
5.213249
5.812346
5.649256
5.226414
5.233644
5.365499
5.560163
5.297189
5.050367
6.172978
5.061826
5.282362
5.290315
5.110023
5.04865
5.342742
4.918375
5.191529
5.068686
5.153903
5.078595
hep-th/0208041
Umut Gursoy
Umut Gursoy
Vector operators in the BMN correspondence
46 pages with 24 figures
JHEP 0307 (2003) 048
10.1088/1126-6708/2003/07/048
CTP-MIT-3296
hep-th
null
We consider a BMN operator with one scalar, phi, and one vector, D_{m}Z, impurity field and compute the anomalous dimension both at planar and torus levels. This "mixed" operator corresponds to a string state with two creation operators which belong to different SO(4) sectors of the background. The anomalous dimension at both levels is found to be the same as the scalar impurity BMN operator. At planar level this constitutes a consistency check of BMN conjecture. Agreement at the torus level can be explained by an argument using supersymmetry and supression in the BMN limit. The same argument implies that a class of fermionic BMN operators also have the same planar and torus level anomalous dimensions. Implications of the results for the map from N=4 SYM theory to string theory in the pp-wave background are discussed.
[ { "created": "Tue, 6 Aug 2002 06:09:27 GMT", "version": "v1" } ]
2009-11-07
[ [ "Gursoy", "Umut", "" ] ]
We consider a BMN operator with one scalar, phi, and one vector, D_{m}Z, impurity field and compute the anomalous dimension both at planar and torus levels. This "mixed" operator corresponds to a string state with two creation operators which belong to different SO(4) sectors of the background. The anomalous dimension at both levels is found to be the same as the scalar impurity BMN operator. At planar level this constitutes a consistency check of BMN conjecture. Agreement at the torus level can be explained by an argument using supersymmetry and supression in the BMN limit. The same argument implies that a class of fermionic BMN operators also have the same planar and torus level anomalous dimensions. Implications of the results for the map from N=4 SYM theory to string theory in the pp-wave background are discussed.
9.5492
8.836904
11.401419
8.49542
9.211294
8.801471
9.325149
8.494314
8.641852
10.41677
8.630925
9.006701
8.851124
8.522722
8.920873
8.930046
8.823211
8.714053
8.997291
9.41076
8.93706
1811.11470
Ali Mollabashi
M. Reza Mohammadi Mozaffar and Ali Mollabashi
Entanglement Evolution in Lifshitz-type Scalar Theories
28 pages, v2: a minor clarification, matches JHEP version
null
10.1007/JHEP01(2019)137
MPP-2018-282, IPM/P-2018/079
hep-th cond-mat.stat-mech cond-mat.str-el quant-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study propagation of entanglement after a mass quench in free scalar Lifshitz theories. We show that entanglement entropy goes across three distinct growth regimes before relaxing to a generalized Gibbs ensemble, namely 'initial rapid growth', 'main linear growth' and 'tortoise saturation'. We show that although a wide spectrum of quasi-particles are responsible for entanglement propagation, as long as the occupation number of the zero mode is not divergent, the linear main growth regime is dominated by the fastest quasi-particle propagating on the edges of a widen light-cone. We present strong evidences in support of effective causality and therefore define an effective notion of saturation time in these theories. The larger the dynamical exponent is, the shorter the linear main growth regime becomes. Due to a pile of tortoise modes which become dominant after saturation of fast modes, exact saturation time is postponed to infinity.
[ { "created": "Wed, 28 Nov 2018 10:03:16 GMT", "version": "v1" }, { "created": "Mon, 14 Jan 2019 13:51:58 GMT", "version": "v2" } ]
2019-02-20
[ [ "Mozaffar", "M. Reza Mohammadi", "" ], [ "Mollabashi", "Ali", "" ] ]
We study propagation of entanglement after a mass quench in free scalar Lifshitz theories. We show that entanglement entropy goes across three distinct growth regimes before relaxing to a generalized Gibbs ensemble, namely 'initial rapid growth', 'main linear growth' and 'tortoise saturation'. We show that although a wide spectrum of quasi-particles are responsible for entanglement propagation, as long as the occupation number of the zero mode is not divergent, the linear main growth regime is dominated by the fastest quasi-particle propagating on the edges of a widen light-cone. We present strong evidences in support of effective causality and therefore define an effective notion of saturation time in these theories. The larger the dynamical exponent is, the shorter the linear main growth regime becomes. Due to a pile of tortoise modes which become dominant after saturation of fast modes, exact saturation time is postponed to infinity.
15.846233
16.355625
17.966906
15.424251
18.584099
15.803083
16.45627
16.821135
15.290927
19.226679
15.088477
15.910089
16.425974
15.552624
15.431243
16.061474
16.007421
15.576083
15.36066
16.427416
15.121058
hep-th/9806083
Yukiko Umeno
Yukiko Umeno, Masahiro Shiroishi, Miki Wadati
Fermionic R-Operator for the Fermion Chain Model
12 pages, 4 figures
null
10.1143/JPSJ.67.1930
null
hep-th
null
The integrability of the one-dimensional (1D) fermion chain model is investigated in the framework of the Quantum Inverse Scattering Method (QISM). We introduce a new R-operator for the fermion chain model, which is expressed in terms of the fermion operators. The R-operator satisfies a new type of the Yang-Baxter relation with fermionic L-operator. We derive the fermionic Sutherland equation from the relation, which is equivalent to the fermionic Lax equation. It also provides a mathematical foundation of the boost operator approach for the fermion model. In fact, we obtain some higher conserved quantities of the fermion model using the boost operator.
[ { "created": "Thu, 11 Jun 1998 07:16:36 GMT", "version": "v1" } ]
2009-10-31
[ [ "Umeno", "Yukiko", "" ], [ "Shiroishi", "Masahiro", "" ], [ "Wadati", "Miki", "" ] ]
The integrability of the one-dimensional (1D) fermion chain model is investigated in the framework of the Quantum Inverse Scattering Method (QISM). We introduce a new R-operator for the fermion chain model, which is expressed in terms of the fermion operators. The R-operator satisfies a new type of the Yang-Baxter relation with fermionic L-operator. We derive the fermionic Sutherland equation from the relation, which is equivalent to the fermionic Lax equation. It also provides a mathematical foundation of the boost operator approach for the fermion model. In fact, we obtain some higher conserved quantities of the fermion model using the boost operator.
7.018821
6.660682
7.575012
6.424534
7.219882
7.109636
6.897853
6.719495
6.834443
7.715031
6.672605
6.75096
7.015679
6.418953
6.561561
6.963242
6.740527
6.639482
6.772156
7.367269
6.64572
hep-th/9403070
Brian Dolan
Brian Dolan
Co-Variant Derivatives And The Renormalisation Group
25 pages PlainTeX, (bdolan@thphys.may.ie)
Int.J.Mod.Phys. A10 (1995) 2439-2466
10.1142/S0217751X95001170
DIAS-STP-94-05
hep-th cond-mat
null
The renormalisation group equation for $N$-point correlation functions can be interpreted in a geometrical manner as an equation for Lie transport of amplitudes in the space of couplings. The vector field generating the diffeomorphism has components given by the $\beta$-functions of the theory. It is argued that this simple picture requires modification whenever any one of the points at which the amplitude is evaluated becomes close to any other. This modification requires the introduction of a connection on the space of couplings and new terms appear in the renormalisation group equation involving co-variant derivatives of the $\beta$-function and the curvature associated with the connection. It is shown how the connection is related to the operator expansion co-efficients, but there remains an arbitrariness in its definition.
[ { "created": "Fri, 11 Mar 1994 18:19:37 GMT", "version": "v1" } ]
2015-06-26
[ [ "Dolan", "Brian", "" ] ]
The renormalisation group equation for $N$-point correlation functions can be interpreted in a geometrical manner as an equation for Lie transport of amplitudes in the space of couplings. The vector field generating the diffeomorphism has components given by the $\beta$-functions of the theory. It is argued that this simple picture requires modification whenever any one of the points at which the amplitude is evaluated becomes close to any other. This modification requires the introduction of a connection on the space of couplings and new terms appear in the renormalisation group equation involving co-variant derivatives of the $\beta$-function and the curvature associated with the connection. It is shown how the connection is related to the operator expansion co-efficients, but there remains an arbitrariness in its definition.
6.28526
6.793379
7.080008
6.543923
6.475609
6.816706
6.661754
6.388054
6.51666
7.642544
6.653473
6.320423
6.649706
6.399669
6.634952
6.294878
6.318719
6.417043
6.526808
6.277815
6.307946
hep-th/0601020
El Hassan Saidi
El Hassan Saidi
Topological SL(2) Gauge Theory on Conifold
42 pages
null
null
null
hep-th
null
Using a two component $SL(2) $ isospinor formalism, we study the link between conifold $T^{\ast}\mathbb{S}^{3}$ and q-deformed non commutative holomorphic geometry in complex four dimensions. Then, thinking about conifold as a projective complex three dimension hypersurface embedded in non compact $WP^{5}(1,-1,1,-1,1,-1) $ space and using conifold local isometries, we study topological $SL(2) $ gauge theory on $T^{\ast}\mathbb{S}^{3}$ and its reductions to lower dimension sub-manifolds $T^{\ast}\mathbb{S}^{2}$, $T^{\ast}\mathbb{S}^{1}$ and their real slices. Projective symmetry is also used to build a supersymmetric QFT$%_{4}$ realization of these backgrounds. Extensions for higher dimensions with conifold like properties are explored. \bigskip \textbf{Key words}: Conifold, q-deformation, non commutative complex geometry, topological gauge theory. Nambu like background.
[ { "created": "Wed, 4 Jan 2006 07:40:55 GMT", "version": "v1" } ]
2007-05-23
[ [ "Saidi", "El Hassan", "" ] ]
Using a two component $SL(2) $ isospinor formalism, we study the link between conifold $T^{\ast}\mathbb{S}^{3}$ and q-deformed non commutative holomorphic geometry in complex four dimensions. Then, thinking about conifold as a projective complex three dimension hypersurface embedded in non compact $WP^{5}(1,-1,1,-1,1,-1) $ space and using conifold local isometries, we study topological $SL(2) $ gauge theory on $T^{\ast}\mathbb{S}^{3}$ and its reductions to lower dimension sub-manifolds $T^{\ast}\mathbb{S}^{2}$, $T^{\ast}\mathbb{S}^{1}$ and their real slices. Projective symmetry is also used to build a supersymmetric QFT$%_{4}$ realization of these backgrounds. Extensions for higher dimensions with conifold like properties are explored. \bigskip \textbf{Key words}: Conifold, q-deformation, non commutative complex geometry, topological gauge theory. Nambu like background.
9.717535
8.814673
10.045877
8.749371
9.700686
9.693748
9.098965
8.954153
8.66927
10.298253
8.921002
9.197706
9.491603
8.986411
9.162081
9.291713
9.247201
8.976781
8.772732
9.610885
9.04824
2309.15307
Yu Nakayama
Yu Nakayama
Functional renormalization group approach to dipolar fixed point which is scale-invariant but non-conformal
15 pages
null
null
YITP-23-119
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A dipolar fixed point introduced by Aharony and Fisher is a physical example of interacting scale-invariant but non-conformal field theories. We find that the perturbative critical exponents computed in $\epsilon$ expansions violate the conformal bootstrap bound. We formulate the functional renormalization group equations a la Wetterich and Polchinski to study the fixed point. We present some results in three dimensions within (uncontrolled) local potential approximations (with or without perturbative anomalous dimensions).
[ { "created": "Tue, 26 Sep 2023 23:38:17 GMT", "version": "v1" } ]
2023-09-28
[ [ "Nakayama", "Yu", "" ] ]
A dipolar fixed point introduced by Aharony and Fisher is a physical example of interacting scale-invariant but non-conformal field theories. We find that the perturbative critical exponents computed in $\epsilon$ expansions violate the conformal bootstrap bound. We formulate the functional renormalization group equations a la Wetterich and Polchinski to study the fixed point. We present some results in three dimensions within (uncontrolled) local potential approximations (with or without perturbative anomalous dimensions).
14.300718
14.53677
15.524402
14.358548
13.032851
13.703283
15.338113
12.946215
12.837301
15.238981
12.666401
13.232366
14.392477
13.427241
13.029287
13.1471
13.540146
12.520787
13.725018
14.232975
12.399003
hep-th/9310111
Nicola Maggiore
Nicola Maggiore and Martin Schaden
Landau gauge within the Gribov horizon
17 pages, NYU-TH-93/10/05
Phys.Rev. D50 (1994) 6616-6625
10.1103/PhysRevD.50.6616
null
hep-th
null
We consider a model which effectively restricts the functional integral of Yang--Mills theories to the fundamental modular region. Using algebraic arguments, we prove that this theory has the same divergences as ordinary Yang Mills theory in the Landau gauge and that it is unitary. The restriction of the functional integral is interpreted as a kind of spontaneous breakdown of the $BRS$ symmetry.
[ { "created": "Mon, 18 Oct 1993 16:07:06 GMT", "version": "v1" } ]
2009-10-22
[ [ "Maggiore", "Nicola", "" ], [ "Schaden", "Martin", "" ] ]
We consider a model which effectively restricts the functional integral of Yang--Mills theories to the fundamental modular region. Using algebraic arguments, we prove that this theory has the same divergences as ordinary Yang Mills theory in the Landau gauge and that it is unitary. The restriction of the functional integral is interpreted as a kind of spontaneous breakdown of the $BRS$ symmetry.
11.12559
8.684434
10.655638
8.496984
9.14932
8.80901
8.353687
8.136692
8.255148
11.0504
8.575458
9.108164
9.46181
9.536717
9.52007
9.740462
9.659698
9.838902
9.132421
9.901337
9.430429
2304.00589
Leonard Susskind
Leonard Susskind
A Paradox and its Resolution Illustrate Principles of de Sitter Holography
null
null
null
null
hep-th
http://creativecommons.org/licenses/by/4.0/
Semiclassical gravity and the holographic description of the static patch of de Sitter space appear to disagree about properties of correlation functions. Certain holographic correlation functions are necessarily real whereas their semiclassical counterparts have both real and imaginary parts. The resolution of this apparent contradiction involves the fact that time-reversal is a gauge symmetry in de Sitter space -- a point made by Harlow and Ooguri -- and the need for an observer (or quantum reference frame) as advocated by Chandrasekaran, Longo, Penington, and Witten.
[ { "created": "Sun, 2 Apr 2023 18:10:05 GMT", "version": "v1" } ]
2023-04-04
[ [ "Susskind", "Leonard", "" ] ]
Semiclassical gravity and the holographic description of the static patch of de Sitter space appear to disagree about properties of correlation functions. Certain holographic correlation functions are necessarily real whereas their semiclassical counterparts have both real and imaginary parts. The resolution of this apparent contradiction involves the fact that time-reversal is a gauge symmetry in de Sitter space -- a point made by Harlow and Ooguri -- and the need for an observer (or quantum reference frame) as advocated by Chandrasekaran, Longo, Penington, and Witten.
11.720154
8.856774
11.452381
8.028727
8.319699
9.610867
8.486128
8.272018
8.625516
13.604906
9.67146
9.42154
10.34605
9.93985
9.665495
9.737977
9.16141
9.614513
9.50374
10.044984
9.480127
hep-th/9503017
Sung-Kil Yang
T. Eguchi, K. Hori and S.-K. Yang
Topological $\sigma$-Models and Large-$N$ Matrix Integral
25 pages, phyzzx, no figures
Int.J.Mod.Phys. A10 (1995) 4203
10.1016/0920-5632(95)00632-X
UT-700
hep-th
null
In this paper we describe in some detail the representation of the topological $CP^1$ model in terms of a matrix integral which we have introduced in a previous article. We first discuss the integrable structure of the $CP^1$ model and show that it is governed by an extension of the 1-dimensional Toda hierarchy. We then introduce a matrix model which reproduces the sum over holomorphic maps from arbitrary Riemann surfaces onto $CP^1$. We compute intersection numbers on the moduli space of curves using geometrical method and show that the results agree with those predicted by the matrix model. We also develop a Landau-Ginzburg (LG) description of the $CP^1$ model using a superpotential $e^X+e^{t_{0,Q}}e^{-X}$ given by the Lax operator of the Toda hierarchy ($X$ is the LG field and $t_{0,Q}$ is the coupling constant of the K\"ahler class). The form of the superpotential indicates the close connection between $CP^1$ and $N=2$ supersymmetric sine-Gordon theory which was noted some time ago by several authors. We also discuss possible generalizations of our construction to other manifolds and present a LG formulation of the topological $CP^2$ model.
[ { "created": "Fri, 3 Mar 1995 06:45:26 GMT", "version": "v1" } ]
2016-09-06
[ [ "Eguchi", "T.", "" ], [ "Hori", "K.", "" ], [ "Yang", "S. -K.", "" ] ]
In this paper we describe in some detail the representation of the topological $CP^1$ model in terms of a matrix integral which we have introduced in a previous article. We first discuss the integrable structure of the $CP^1$ model and show that it is governed by an extension of the 1-dimensional Toda hierarchy. We then introduce a matrix model which reproduces the sum over holomorphic maps from arbitrary Riemann surfaces onto $CP^1$. We compute intersection numbers on the moduli space of curves using geometrical method and show that the results agree with those predicted by the matrix model. We also develop a Landau-Ginzburg (LG) description of the $CP^1$ model using a superpotential $e^X+e^{t_{0,Q}}e^{-X}$ given by the Lax operator of the Toda hierarchy ($X$ is the LG field and $t_{0,Q}$ is the coupling constant of the K\"ahler class). The form of the superpotential indicates the close connection between $CP^1$ and $N=2$ supersymmetric sine-Gordon theory which was noted some time ago by several authors. We also discuss possible generalizations of our construction to other manifolds and present a LG formulation of the topological $CP^2$ model.
5.772377
5.61502
6.617069
5.549101
5.629572
5.760571
5.556291
5.843258
5.693067
6.690567
5.435392
5.569833
5.998507
5.437635
5.713521
5.509962
5.559373
5.459759
5.560356
5.824807
5.624903
0903.4827
Eric R. Bittner
Eric R. Bittner and Jeremy B. Maddox and Donald J. Kouri
A Supersymmetric Approach to Excited States via Quantum Monte Carlo
null
null
null
null
hep-th quant-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present here a supersymmetric (SUSY) approach for determining excitation energies within the context of a quantum Monte Carlo scheme. By using the fact that SUSY quantum mechanics gives rises to a series of isospectral Hamiltonians, we show that Monte Carlo ground-state calculations in the SUSY partners can be used to reconstruct accurately both the spectrum and states of an arbitrary Schr\"odinger equation. Since the ground-state of each partner potential is node-less, we avoid any ``node''-problem typically associated with the Monte Carlo technique. While we provide an example of using this approach to determine the tunneling states in a double-well potential, the method is applicable to any 1D potential problem. We conclude by discussing the extension to higher dimensions.
[ { "created": "Fri, 27 Mar 2009 15:32:23 GMT", "version": "v1" }, { "created": "Mon, 30 Mar 2009 17:36:56 GMT", "version": "v2" }, { "created": "Thu, 18 Jun 2009 18:49:26 GMT", "version": "v3" } ]
2009-06-18
[ [ "Bittner", "Eric R.", "" ], [ "Maddox", "Jeremy B.", "" ], [ "Kouri", "Donald J.", "" ] ]
We present here a supersymmetric (SUSY) approach for determining excitation energies within the context of a quantum Monte Carlo scheme. By using the fact that SUSY quantum mechanics gives rises to a series of isospectral Hamiltonians, we show that Monte Carlo ground-state calculations in the SUSY partners can be used to reconstruct accurately both the spectrum and states of an arbitrary Schr\"odinger equation. Since the ground-state of each partner potential is node-less, we avoid any ``node''-problem typically associated with the Monte Carlo technique. While we provide an example of using this approach to determine the tunneling states in a double-well potential, the method is applicable to any 1D potential problem. We conclude by discussing the extension to higher dimensions.
10.075515
10.475718
10.420249
9.990721
10.22215
11.140175
10.839042
9.510565
9.720872
10.669635
9.614375
9.989496
10.5831
10.156491
9.86746
10.363279
10.078833
9.912351
9.988986
10.354018
9.903375
hep-th/0003212
J. M. Maillard
S. Boukraa, J-M.Maillard
Let's Baxterise
38 pages, no figure
null
10.1023/A:1004842717830
null
hep-th
null
We recall the concept of Baxterisation of an R-matrix, or of a monodromy matrix, which corresponds to build, from one point in the $ R$-matrix parameter space, the algebraic variety where the spectral parameter(s) live. We show that the Baxterisation, which amounts to studying the iteration of a birational transformation, is a ``win-win'' strategy: it enables to discard efficiently the non-integrable situations, focusing directly on the two interesting cases where the algebraic varieties are of the so-called ``general type'' (finite order iteration) or are Abelian varieties (infinite order iteration). We emphasize the heuristic example of the sixteen vertex model and provide a complete description of the finite order iterations situations for the Baxter model. We show that the Baxterisation procedure can be introduced in much larger frameworks where the existence of some underlying Yang-Baxter structure is not used: we Baxterise L-operators, local quantum Lax matrices, and quantum Hamiltonians.
[ { "created": "Thu, 23 Mar 2000 17:20:32 GMT", "version": "v1" } ]
2015-06-25
[ [ "Boukraa", "S.", "" ], [ "Maillard", "J-M.", "" ] ]
We recall the concept of Baxterisation of an R-matrix, or of a monodromy matrix, which corresponds to build, from one point in the $ R$-matrix parameter space, the algebraic variety where the spectral parameter(s) live. We show that the Baxterisation, which amounts to studying the iteration of a birational transformation, is a ``win-win'' strategy: it enables to discard efficiently the non-integrable situations, focusing directly on the two interesting cases where the algebraic varieties are of the so-called ``general type'' (finite order iteration) or are Abelian varieties (infinite order iteration). We emphasize the heuristic example of the sixteen vertex model and provide a complete description of the finite order iterations situations for the Baxter model. We show that the Baxterisation procedure can be introduced in much larger frameworks where the existence of some underlying Yang-Baxter structure is not used: we Baxterise L-operators, local quantum Lax matrices, and quantum Hamiltonians.
16.952019
17.82457
22.530577
17.155123
18.978508
20.821655
19.055513
17.832603
19.240059
21.20068
17.587458
16.790787
18.137112
17.10807
17.23119
17.340908
17.253666
17.063742
16.850389
17.672567
16.719801
hep-th/0507029
Kentaroh Yoshida
Hyeonjoon Shin, Kentaroh Yoshida
Thermodynamic Behavior of Fuzzy Membranes in PP-Wave Matrix Model
13 pages, 4 figures, LaTeX
Phys.Lett. B627 (2005) 188-196
10.1016/j.physletb.2005.09.007
KEK-TH-1021
hep-th
null
We discuss a two-body interaction of membrane fuzzy spheres in a pp-wave matrix model at finite temperature by considering a fuzzy sphere rotates with a constant radius r around the other one sitting at the origin in the SO(6) symmetric space. This system of two fuzzy spheres is supersymmetric at zero temperature and there is no interaction between them. Once the system is coupled to the heat bath, supersymmetries are completely broken and non-trivial interaction appears. We numerically show that the potential between fuzzy spheres is attractive and so the rotating fuzzy sphere tends to fall into the origin. The analytic formula of the free energy is also evaluated in the large N limit. It is well approximated by a polylog-function.
[ { "created": "Mon, 4 Jul 2005 00:38:12 GMT", "version": "v1" } ]
2009-11-11
[ [ "Shin", "Hyeonjoon", "" ], [ "Yoshida", "Kentaroh", "" ] ]
We discuss a two-body interaction of membrane fuzzy spheres in a pp-wave matrix model at finite temperature by considering a fuzzy sphere rotates with a constant radius r around the other one sitting at the origin in the SO(6) symmetric space. This system of two fuzzy spheres is supersymmetric at zero temperature and there is no interaction between them. Once the system is coupled to the heat bath, supersymmetries are completely broken and non-trivial interaction appears. We numerically show that the potential between fuzzy spheres is attractive and so the rotating fuzzy sphere tends to fall into the origin. The analytic formula of the free energy is also evaluated in the large N limit. It is well approximated by a polylog-function.
10.553782
10.899773
12.501911
10.438695
10.751962
11.130793
10.315248
10.03127
10.391335
12.534999
9.775652
10.519897
11.152514
10.320207
10.43386
10.287612
10.213567
10.237488
10.655508
10.681053
10.077268
1310.6357
Dario Rosa
Dario Rosa
Generalized geometry of two-dimensional vacua
31 pages, 1 figure. v2: minor corrections, references added
null
10.1007/JHEP07(2014)111
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We derive the conditions for unbroken supersymmetry for a Mink_2, (2,0) vacuum, arising from Type II supergravity on a compact eight-dimensional manifold M_8. When specialized to internal manifolds enjoying SU(4)xSU(4) structure the resulting system is elegantly rewritten in terms of generalized complex geometry. This particular class of vacua violates the correspondence between supersymmetry conditions and calibrations conditions of D branes (supersymmetry-calibrations correspondence). Our analysis includes and extends previous results about the failure of the supersymmetry-calibrations correspondence, and confirms the existence of a precise relation between such a failure and a subset of the supersymmetry conditions.
[ { "created": "Wed, 23 Oct 2013 20:00:02 GMT", "version": "v1" }, { "created": "Fri, 5 Dec 2014 11:28:58 GMT", "version": "v2" } ]
2015-06-17
[ [ "Rosa", "Dario", "" ] ]
We derive the conditions for unbroken supersymmetry for a Mink_2, (2,0) vacuum, arising from Type II supergravity on a compact eight-dimensional manifold M_8. When specialized to internal manifolds enjoying SU(4)xSU(4) structure the resulting system is elegantly rewritten in terms of generalized complex geometry. This particular class of vacua violates the correspondence between supersymmetry conditions and calibrations conditions of D branes (supersymmetry-calibrations correspondence). Our analysis includes and extends previous results about the failure of the supersymmetry-calibrations correspondence, and confirms the existence of a precise relation between such a failure and a subset of the supersymmetry conditions.
13.213635
13.057325
15.056422
11.809993
13.123574
11.394876
13.224751
11.899566
11.952003
13.6526
11.58732
11.906252
13.338529
11.91142
11.997844
11.668735
11.998933
12.163945
11.477748
13.096431
11.793895
hep-th/0611227
Maurizio Gasperini
M. Gasperini
A new scale in the sky
6 pages, 2 figures included with epsfig. Essay written for the 2006 Awards for Essays on Gravitation (Gravity Research Foundation), and awarded with "Honorable Mention". To appear in Int. J Mod. Phys. D (December 2006, Special Issue)
Int.J.Mod.Phys.D15:2147-2152,2006
10.1142/S0218271806009480
CERN-PH-TH/2006-031
hep-th
null
The existence of a new ultraviolet scale $\Lambda=g M_P$ for effective theories with gravity and U(1) gauge fields has recently been conjectured as a possible criterion for distinguishing parts of the swampland from the string landscape. Here we discuss a possible phenomenological signature of this scale, for electromagnetic fields, in astrophysical observations.
[ { "created": "Tue, 21 Nov 2006 18:57:44 GMT", "version": "v1" } ]
2008-11-26
[ [ "Gasperini", "M.", "" ] ]
The existence of a new ultraviolet scale $\Lambda=g M_P$ for effective theories with gravity and U(1) gauge fields has recently been conjectured as a possible criterion for distinguishing parts of the swampland from the string landscape. Here we discuss a possible phenomenological signature of this scale, for electromagnetic fields, in astrophysical observations.
15.658853
12.878729
13.141105
12.381801
12.843825
12.929652
12.51236
11.253721
12.09594
13.561604
11.624861
12.282912
12.892
12.68963
12.045985
11.386057
12.567653
11.96222
12.648077
13.543665
11.959765
hep-th/9606012
Hitoshi Konno
Hitoshi Konno
Dynamical Correlation Functions and Finite-size Scaling in Ruijsenaars-Schneider Model
27 pages, PS file, to be published in Nucl.Phys.B
Nucl.Phys. B473 (1996) 579-600
10.1016/0550-3213(96)00208-8
YITP-96-4
hep-th
null
The trigonometric Ruijsenaars-Schneider model is diagonalized by means of the Macdonald symmetric functions. We evaluate the dynamical density-density correlation function and the one-particle retarded Green function as well as their thermodynamic limit. Based on these results and finite-size scaling analysis, we show that the low-energy behavior of the model is described by the $C=1$ Gaussian conformal field theory under a new fractional selection rule for the quantum numbers labeling the critical exponents.
[ { "created": "Tue, 4 Jun 1996 08:33:27 GMT", "version": "v1" } ]
2009-10-30
[ [ "Konno", "Hitoshi", "" ] ]
The trigonometric Ruijsenaars-Schneider model is diagonalized by means of the Macdonald symmetric functions. We evaluate the dynamical density-density correlation function and the one-particle retarded Green function as well as their thermodynamic limit. Based on these results and finite-size scaling analysis, we show that the low-energy behavior of the model is described by the $C=1$ Gaussian conformal field theory under a new fractional selection rule for the quantum numbers labeling the critical exponents.
10.609994
8.936832
11.099811
9.028388
10.171215
10.653676
9.5767
9.234207
8.452293
11.338498
9.022494
9.341119
9.717934
9.202573
9.063228
9.084502
9.127841
9.094091
8.670944
9.706344
9.21927
2407.17384
Benjamin J. Stone Mr
Benjamin J. Stone
Correlation functions of conserved currents in (super)conformal field theory
PhD Thesis, 207 pages. Based on arXiv:2102.04827, arXiv:2108.01865, arXiv:2204.04899, arXiv:2210.13135, arXiv:2302.00593, arXiv:2305.02233 and arXiv:2307.11435
null
null
null
hep-th math-ph math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This thesis is dedicated to analysing the general structure of two- and three-point correlation functions of conserved currents of arbitrary integer or half-integer spins in three- and four-dimensional (super)conformal field theory.
[ { "created": "Wed, 24 Jul 2024 16:07:45 GMT", "version": "v1" } ]
2024-07-25
[ [ "Stone", "Benjamin J.", "" ] ]
This thesis is dedicated to analysing the general structure of two- and three-point correlation functions of conserved currents of arbitrary integer or half-integer spins in three- and four-dimensional (super)conformal field theory.
8.334977
4.918145
7.276535
5.521537
6.222276
6.310571
5.884369
5.340329
5.605474
8.133727
5.455665
6.725202
7.848471
6.694683
6.46403
6.632364
6.597277
6.666511
6.848262
7.760881
6.57483
1802.05638
Roldao da Rocha
D. M. Dantas, R. da Rocha, C. A. S. Almeida
Monopoles on string-like models and the Coulomb's law
14 pages, 7 figures
null
10.1016/j.physletb.2018.05.003
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The t'Hooft-Polyakov monopole mass can be substantially altered, in the thick GS and HC brane-world setup, and can be employed to constrain the brane thickness limit. In this work, we comprise a brief review regarding gauge fields localization in the string-like six dimensional brane-world models setup. The correction to the Coulomb's law in two models is studied. Besides, the monopole features are investigated from the point of view of the gauge fields localization in the string-like brane-worlds and its thickness.
[ { "created": "Thu, 15 Feb 2018 16:24:47 GMT", "version": "v1" } ]
2018-08-01
[ [ "Dantas", "D. M.", "" ], [ "da Rocha", "R.", "" ], [ "Almeida", "C. A. S.", "" ] ]
The t'Hooft-Polyakov monopole mass can be substantially altered, in the thick GS and HC brane-world setup, and can be employed to constrain the brane thickness limit. In this work, we comprise a brief review regarding gauge fields localization in the string-like six dimensional brane-world models setup. The correction to the Coulomb's law in two models is studied. Besides, the monopole features are investigated from the point of view of the gauge fields localization in the string-like brane-worlds and its thickness.
22.847843
19.855358
21.556385
20.081421
20.144539
21.731707
20.510033
18.292864
19.653723
23.901424
19.769199
21.274815
20.587488
20.313105
20.143814
21.006407
20.648521
20.265795
20.762318
20.5935
20.227285
hep-th/0112085
Sei-Hoon Moon
Sei-Hoon Moon
Global Black Branes (Extended Global Defects Surrounded by Horizons), Brane Worlds and the Cosmological Constant
33 pages, 5 figures
Nucl.Phys. B624 (2002) 327-359
10.1016/S0550-3213(01)00657-5
null
hep-th gr-qc
null
We study global defects coupled to higher-dimensional gravity with a negative cosmological constant. This paper is mainly devoted to studying global black brane solutions which are extended global defects surrounded by horizons. We find series solutions in a few separated regions and confirm numerically that they can be mutually connected. When the world volume of the brane is Ricci-flat, the brane is surrounded by a degenerated horizon, while it is surrounded by two horizons when the world volume has a positive constant curvature. Each solution corresponds to an extremal and a non-extremal state, respectively. Their causal structures resemble those of the Reissner-Nordstr\"{o}m black holes in anti-de Sitter spacetime. However, the non-extremal black brane is not a static object, but an inflating brane. In addition, we briefly discuss a brane world model in the context of the global black branes. We comment on a few thermodynamic properties of the global black branes, and discuss a decrease of the cosmological constant on the brane world through the thermodynamic instability of the non-extremal global black brane.
[ { "created": "Tue, 11 Dec 2001 11:06:43 GMT", "version": "v1" } ]
2009-11-07
[ [ "Moon", "Sei-Hoon", "" ] ]
We study global defects coupled to higher-dimensional gravity with a negative cosmological constant. This paper is mainly devoted to studying global black brane solutions which are extended global defects surrounded by horizons. We find series solutions in a few separated regions and confirm numerically that they can be mutually connected. When the world volume of the brane is Ricci-flat, the brane is surrounded by a degenerated horizon, while it is surrounded by two horizons when the world volume has a positive constant curvature. Each solution corresponds to an extremal and a non-extremal state, respectively. Their causal structures resemble those of the Reissner-Nordstr\"{o}m black holes in anti-de Sitter spacetime. However, the non-extremal black brane is not a static object, but an inflating brane. In addition, we briefly discuss a brane world model in the context of the global black branes. We comment on a few thermodynamic properties of the global black branes, and discuss a decrease of the cosmological constant on the brane world through the thermodynamic instability of the non-extremal global black brane.
7.412889
7.346933
7.082351
6.978243
7.077424
7.594144
7.065432
6.943998
6.887367
7.259976
7.169014
7.038396
7.139529
7.031669
6.825432
6.911337
6.955426
6.962893
6.912504
7.258339
6.90967
1910.11852
Sebastian Mizera
Sebastian Mizera, Andrzej Pokraka
From Infinity to Four Dimensions: Higher Residue Pairings and Feynman Integrals
41 pages, reference added
JHEP 2002 (2020) 159
10.1007/JHEP02(2020)159
null
hep-th math-ph math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study a surprising phenomenon in which Feynman integrals in $D=4-2\varepsilon$ space-time dimensions as $\varepsilon \to 0$ can be fully characterized by their behavior in the opposite limit, $\varepsilon \to \infty$. More concretely, we consider vector bundles of Feynman integrals over kinematic spaces, whose connections have a polynomial dependence on $\varepsilon$ and are known to be governed by intersection numbers of twisted forms. They give rise to differential equations that can be obtained exactly as a truncating expansion in either $\varepsilon$ or $1/\varepsilon$. We use the latter for explicit computations, which are performed by expanding intersection numbers in terms of Saito's higher residue pairings (previously used in the context of topological Landau-Ginzburg models and mirror symmetry). These pairings localize on critical points of a certain Morse function, which correspond to regions in the loop-momentum space that were previously thought to govern only the large-$D$ physics. The results of this work leverage recent understanding of an analogous situation for moduli spaces of curves, where the $\alpha' \to 0$ and $\alpha' \to \infty$ limits of intersection numbers coincide for scattering amplitudes of massless quantum field theories.
[ { "created": "Fri, 25 Oct 2019 17:18:21 GMT", "version": "v1" }, { "created": "Mon, 2 Nov 2020 03:51:05 GMT", "version": "v2" } ]
2020-11-03
[ [ "Mizera", "Sebastian", "" ], [ "Pokraka", "Andrzej", "" ] ]
We study a surprising phenomenon in which Feynman integrals in $D=4-2\varepsilon$ space-time dimensions as $\varepsilon \to 0$ can be fully characterized by their behavior in the opposite limit, $\varepsilon \to \infty$. More concretely, we consider vector bundles of Feynman integrals over kinematic spaces, whose connections have a polynomial dependence on $\varepsilon$ and are known to be governed by intersection numbers of twisted forms. They give rise to differential equations that can be obtained exactly as a truncating expansion in either $\varepsilon$ or $1/\varepsilon$. We use the latter for explicit computations, which are performed by expanding intersection numbers in terms of Saito's higher residue pairings (previously used in the context of topological Landau-Ginzburg models and mirror symmetry). These pairings localize on critical points of a certain Morse function, which correspond to regions in the loop-momentum space that were previously thought to govern only the large-$D$ physics. The results of this work leverage recent understanding of an analogous situation for moduli spaces of curves, where the $\alpha' \to 0$ and $\alpha' \to \infty$ limits of intersection numbers coincide for scattering amplitudes of massless quantum field theories.
8.032088
8.216773
8.725552
7.778042
8.522161
8.697209
8.782351
7.656967
7.957972
9.475813
8.139124
8.208334
8.131571
7.92767
7.989315
7.928482
7.961908
7.82093
7.944592
8.255555
7.828915
2209.15020
Maximilian Koegler
Maximilian Koegler, Marc Schneider
Vacuum Induced Ground-State Instabilities
11 pages, 2 figures
null
null
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We use the hydrogen atom's bound state electron as a probe and investigate the consequences inflicted by time-resolved vacuum effects. Explicitly, we derive a closed form for the time-dependent modification of the Maxwell equations emanating from vacuum fluctuations in quantum electrodynamics. As a consequence, we find a non-vanishing probability that the corresponding hydrogen ground state can be excited through interactions with fermionic currents that are entailed in the vacuum state.
[ { "created": "Thu, 29 Sep 2022 18:00:01 GMT", "version": "v1" } ]
2022-10-03
[ [ "Koegler", "Maximilian", "" ], [ "Schneider", "Marc", "" ] ]
We use the hydrogen atom's bound state electron as a probe and investigate the consequences inflicted by time-resolved vacuum effects. Explicitly, we derive a closed form for the time-dependent modification of the Maxwell equations emanating from vacuum fluctuations in quantum electrodynamics. As a consequence, we find a non-vanishing probability that the corresponding hydrogen ground state can be excited through interactions with fermionic currents that are entailed in the vacuum state.
18.918112
19.256742
16.675869
15.867288
18.567585
18.465195
19.319355
17.746441
19.388607
18.205624
16.999067
18.590223
17.323788
17.124908
17.464319
18.144735
17.2666
17.637243
17.877453
18.060509
18.012581
1210.2585
Roberto Bonezzi
Roberto Bonezzi
U(N) spinning particles and higher spin fields on Kaehler backgrounds
5 pages. Based on the talk presented at Conference QFTG 2012, 31 Jul - 4 Aug 2012. Tomsk, Russia. To appear in Tomsk State Pedagogical University Bulletin
null
null
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this short contribution we will review the quantization of U(N) spinning particles with complex target spaces, producing equations for higher spin fields on complex backgrounds. We will focus first on flat complex space, and subsequently discuss how to extend our model on suitable Kaehler manifolds. In the final section, we will specialize to (p,q)-forms on arbitrary Kaehler spaces and present their one-loop effective actions as well as issues related to Hodge duality.
[ { "created": "Tue, 9 Oct 2012 12:51:37 GMT", "version": "v1" } ]
2012-10-10
[ [ "Bonezzi", "Roberto", "" ] ]
In this short contribution we will review the quantization of U(N) spinning particles with complex target spaces, producing equations for higher spin fields on complex backgrounds. We will focus first on flat complex space, and subsequently discuss how to extend our model on suitable Kaehler manifolds. In the final section, we will specialize to (p,q)-forms on arbitrary Kaehler spaces and present their one-loop effective actions as well as issues related to Hodge duality.
18.227339
15.937474
16.967712
14.84952
17.45842
15.771662
16.156166
15.299989
16.366001
18.908024
16.37429
16.032274
17.124029
16.2162
15.119633
15.893544
16.048906
16.254629
16.680443
15.789063
16.39045
2208.09771
Victoria Abakumova
V. A. Abakumova, S. L. Lyakhovich
Global conserved quantities and unfree gauge symmetry
6 pages, to appear in PEPAN Letters
null
10.1134/S1547477122050028
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider a class of theories with unfree gauge symmetry, whose gauge parameters are restricted by differential equations. We demonstrate that such theories admit global conserved quantities, whose on-shell values are defined by asymptotics of the fields rather than Cauchy data. The global conserved quantities can be deduced proceeding from the equations restricting gauge parameters, and they are treated differently by two BRST complexes corresponding to a system with unfree gauge symmetry.
[ { "created": "Sun, 21 Aug 2022 01:17:59 GMT", "version": "v1" } ]
2022-10-19
[ [ "Abakumova", "V. A.", "" ], [ "Lyakhovich", "S. L.", "" ] ]
We consider a class of theories with unfree gauge symmetry, whose gauge parameters are restricted by differential equations. We demonstrate that such theories admit global conserved quantities, whose on-shell values are defined by asymptotics of the fields rather than Cauchy data. The global conserved quantities can be deduced proceeding from the equations restricting gauge parameters, and they are treated differently by two BRST complexes corresponding to a system with unfree gauge symmetry.
15.81746
14.139472
15.854868
13.346237
11.7863
12.125946
11.622611
11.548253
14.234386
19.172289
12.979386
13.236283
14.950925
13.711222
14.074536
13.091486
13.665929
13.335498
14.453586
15.034605
13.863347
hep-th/9812107
Gaida
R. Gaida, V. Tretyak, Yu. Yaremko (Institute for Condensed Matter Physics)
Quasi-Relativistic Center-of-Mass Variables in Applications
12 pages, Latex2e
J.Phys.Condens.Matter 3 (1998) 425-437
null
null
hep-th
null
Collective center-of-mass variables are introduced in the Lagrangian formalism of the relativistic classical mechanics of directly interacting particles. It is shown that the transition to the Hamiltonian formalism leads to the Bakamjian-Thomas model. The quantum-mechanical system consisting of two spinless particles is investigated. Quasi-relativistic corrections to the discrete energy spectrum are calculated for some Coulomb-like interactions having field theoretical analogues.
[ { "created": "Mon, 14 Dec 1998 11:59:17 GMT", "version": "v1" } ]
2007-05-23
[ [ "Gaida", "R.", "", "Institute for Condensed Matter\n Physics" ], [ "Tretyak", "V.", "", "Institute for Condensed Matter\n Physics" ], [ "Yaremko", "Yu.", "", "Institute for Condensed Matter\n Physics" ] ]
Collective center-of-mass variables are introduced in the Lagrangian formalism of the relativistic classical mechanics of directly interacting particles. It is shown that the transition to the Hamiltonian formalism leads to the Bakamjian-Thomas model. The quantum-mechanical system consisting of two spinless particles is investigated. Quasi-relativistic corrections to the discrete energy spectrum are calculated for some Coulomb-like interactions having field theoretical analogues.
10.870797
11.281053
10.868496
10.291945
11.783223
12.655814
11.08917
12.480846
10.110434
13.147432
11.110674
9.956618
10.05493
9.895425
9.638626
9.820926
9.513352
9.622579
9.826931
10.516802
9.971937
hep-th/0007141
Hiroshi Ishikawa
Hiroshi Ishikawa and Satoshi Watamura (Tohoku University)
Free Field Realization of D-brane in Group Manifold
23 pages, latex2e with amsmath
JHEP 0008 (2000) 044
10.1088/1126-6708/2000/08/044
TU-595
hep-th
null
We construct the boundary state for the D-brane in the SU(2) group manifold directly in terms of the group variables. We propose a matching condition for the left- and the right-moving sectors including the zero modes that describes a D-brane of the Neumann-type. The free field realization of the WZW model is used to obtain the boundary state subject to the matching condition. We show that the resulting state coincides with Cardy's state. The structure of the BRST cohomology is realized by imposing the invariance of the state under the Weyl group of the current algebra.
[ { "created": "Tue, 18 Jul 2000 11:19:27 GMT", "version": "v1" } ]
2009-10-31
[ [ "Ishikawa", "Hiroshi", "", "Tohoku University" ], [ "Watamura", "Satoshi", "", "Tohoku University" ] ]
We construct the boundary state for the D-brane in the SU(2) group manifold directly in terms of the group variables. We propose a matching condition for the left- and the right-moving sectors including the zero modes that describes a D-brane of the Neumann-type. The free field realization of the WZW model is used to obtain the boundary state subject to the matching condition. We show that the resulting state coincides with Cardy's state. The structure of the BRST cohomology is realized by imposing the invariance of the state under the Weyl group of the current algebra.
8.230209
7.402997
8.747942
6.942924
7.579947
7.556357
7.964937
7.413694
7.470595
8.628954
7.468834
7.715281
8.393331
7.749879
7.546388
7.592362
7.636763
7.597748
7.728096
8.247368
7.693461
hep-th/0402006
Bozhidar Zakhariev Iliev
Bozhidar Z. Iliev (Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria)
Lagrangian quantum field theory in momentum picture. I. Free scalar fields
56 LaTeX pages. The packages AMS-LaTeX and amsfonts are required. For related papers, visit the "publication" pages at http://theo.inrne.bas.bg/~bozho/
null
null
null
hep-th math-ph math.MP quant-ph
null
The work contains a detailed investigation of free neutral (Hermitian) or charged (non-Hermitian) scalar fields and the describing them (system of) Klein-Gordon equation(s) in momentum picture of motion. A form of the field equation(s) in terms of creation and annihilation operators is derived. An analysis of the (anti-)commutation relations on its base is presented. The concept of the vacuum and the evolution of state vectors are discussed.
[ { "created": "Sun, 1 Feb 2004 08:27:49 GMT", "version": "v1" } ]
2007-05-23
[ [ "Iliev", "Bozhidar Z.", "", "Institute for Nuclear Research and Nuclear Energy,\n Bulgarian Academy of Sciences, Sofia, Bulgaria" ] ]
The work contains a detailed investigation of free neutral (Hermitian) or charged (non-Hermitian) scalar fields and the describing them (system of) Klein-Gordon equation(s) in momentum picture of motion. A form of the field equation(s) in terms of creation and annihilation operators is derived. An analysis of the (anti-)commutation relations on its base is presented. The concept of the vacuum and the evolution of state vectors are discussed.
13.217287
12.060284
11.757722
10.872422
12.194705
11.832991
12.155512
11.05818
11.39626
12.75942
10.63224
11.651952
11.92509
11.230141
11.311686
11.105924
11.271384
11.592313
11.290672
11.491546
11.303857
hep-th/0611308
Roberto Zucchini
Roberto Zucchini
BiHermitian Supersymmetric Quantum Mechanics
45 pages, no figure; new results added in section 8
Class.Quant.Grav.24:2073-2098,2007
10.1088/0264-9381/24/8/009
DFUB 06
hep-th math-ph math.DG math.MP
null
BiHermitian geometry, discovered long ago by Gates, Hull and Rocek, is the most general sigma model target space geometry allowing for (2,2) world sheet supersymmetry. In this paper, we work out supersymmetric quantum mechanics for a biHermitian target space. We display the full supersymmetry of the model and illustrate in detail its quantization procedure. Finally, we show that the quantized model reproduces the Hodge theory for compact twisted generalized Kaehler manifolds recently developed by Gualtieri. This allows us to recover and put in a broader context the results on the biHermitian topological sigma models obtained by Kapustin and Li.
[ { "created": "Tue, 28 Nov 2006 15:26:21 GMT", "version": "v1" }, { "created": "Thu, 7 Dec 2006 10:26:18 GMT", "version": "v2" } ]
2008-11-26
[ [ "Zucchini", "Roberto", "" ] ]
BiHermitian geometry, discovered long ago by Gates, Hull and Rocek, is the most general sigma model target space geometry allowing for (2,2) world sheet supersymmetry. In this paper, we work out supersymmetric quantum mechanics for a biHermitian target space. We display the full supersymmetry of the model and illustrate in detail its quantization procedure. Finally, we show that the quantized model reproduces the Hodge theory for compact twisted generalized Kaehler manifolds recently developed by Gualtieri. This allows us to recover and put in a broader context the results on the biHermitian topological sigma models obtained by Kapustin and Li.
8.84466
7.652709
10.822271
7.677572
7.880416
8.322826
7.742666
7.989189
7.141944
9.629442
7.696589
7.346781
8.974908
7.62429
7.600463
7.865745
7.551525
7.792592
8.01423
8.84866
7.897828
1201.4302
Sergey Yu. Vernov
E. Elizalde, A. J. Lopez-Revelles, S. D. Odintsov, S. Yu. Vernov
Cosmological models with Yang-Mills fields
14 pages, v2: refs. added
Phys. Atom. Nucl. 76 (2013) 996-1003
10.1134/S1063778813080097
null
hep-th astro-ph.CO gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Cosmological models with an SU(2) Yang-Mills field are studied. For a specific model with a minimally coupled Yang-Mills Lagrangian, which includes an arbitrary function of the second-order term and a fourth-order term, a corresponding reconstruction program is proposed. It is shown that the model with minimal coupling has no de Sitter solutions, for any nontrivial function of the second-order term. To get de Sitter solutions, a gravitational model with nonminimally coupled Yang-Mills fields is then investigated. It is shown that the model with non-minimal coupling has in fact a de Sitter solution, even in absence of the cosmological constant term.
[ { "created": "Fri, 20 Jan 2012 14:21:53 GMT", "version": "v1" }, { "created": "Wed, 7 Mar 2012 14:00:18 GMT", "version": "v2" } ]
2013-08-27
[ [ "Elizalde", "E.", "" ], [ "Lopez-Revelles", "A. J.", "" ], [ "Odintsov", "S. D.", "" ], [ "Vernov", "S. Yu.", "" ] ]
Cosmological models with an SU(2) Yang-Mills field are studied. For a specific model with a minimally coupled Yang-Mills Lagrangian, which includes an arbitrary function of the second-order term and a fourth-order term, a corresponding reconstruction program is proposed. It is shown that the model with minimal coupling has no de Sitter solutions, for any nontrivial function of the second-order term. To get de Sitter solutions, a gravitational model with nonminimally coupled Yang-Mills fields is then investigated. It is shown that the model with non-minimal coupling has in fact a de Sitter solution, even in absence of the cosmological constant term.
6.736905
6.025068
6.386277
6.1266
6.2747
6.512263
6.63961
6.165639
6.277056
6.794202
6.513121
6.457903
6.716624
6.449098
6.561337
6.260853
6.405297
6.455036
6.612202
6.537389
6.253472
1912.06146
Mohamed Elmi
Philip Candelas, Xenia de la Ossa, Mohamed Elmi and Duco van Straten
A One Parameter Family of Calabi-Yau Manifolds with Attractor Points of Rank Two
84 pages, 24 colour figures, 14 tables
null
10.1007/JHEP10(2020)202
null
hep-th math.AG math.NT
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the process of studying the zeta-function for one parameter families of Calabi-Yau manifolds we have been led to a manifold, first studied by Verrill, for which the quartic numerator of the zeta-function factorises into two quadrics remarkably often. Among these factorisations, we find persistent factorisations; these are determined by a parameter that satisfies an algebraic equation with coefficients in Q, so independent of any particular prime. Such factorisations are expected to be modular with each quadratic factor associated to a modular form. If the parameter is defined over Q this modularity is assured by the proof of the Serre Conjecture. We identify three values of the parameter that give rise to persistent factorisations, one of which is defined over Q, and identify, for all three cases, the associated modular groups. We note that these factorisations are due a splitting of Hodge structure and that these special values of the parameter are rank two attractor points in the sense of IIB supergravity. To our knowledge, these points provide the first explicit examples of non-singular, non-rigid rank two attractor points for Calabi-Yau manifolds of full SU(3) holonomy. The values of the periods and their covariant derivatives, at the attractor points, are identified in terms of critical values of the L-functions of the modular groups. Thus the critical L-values enter into the calculation of physical quantities such as the area of the black hole in the 4D spacetime. In our search for additional rank two attractor points, we perform a statistical analysis of the numerator of the zeta-function and are led to conjecture that the coefficients in this polynomial are distributed according to the statistics of random USp(4) matrices.
[ { "created": "Thu, 12 Dec 2019 19:00:02 GMT", "version": "v1" } ]
2020-12-02
[ [ "Candelas", "Philip", "" ], [ "de la Ossa", "Xenia", "" ], [ "Elmi", "Mohamed", "" ], [ "van Straten", "Duco", "" ] ]
In the process of studying the zeta-function for one parameter families of Calabi-Yau manifolds we have been led to a manifold, first studied by Verrill, for which the quartic numerator of the zeta-function factorises into two quadrics remarkably often. Among these factorisations, we find persistent factorisations; these are determined by a parameter that satisfies an algebraic equation with coefficients in Q, so independent of any particular prime. Such factorisations are expected to be modular with each quadratic factor associated to a modular form. If the parameter is defined over Q this modularity is assured by the proof of the Serre Conjecture. We identify three values of the parameter that give rise to persistent factorisations, one of which is defined over Q, and identify, for all three cases, the associated modular groups. We note that these factorisations are due a splitting of Hodge structure and that these special values of the parameter are rank two attractor points in the sense of IIB supergravity. To our knowledge, these points provide the first explicit examples of non-singular, non-rigid rank two attractor points for Calabi-Yau manifolds of full SU(3) holonomy. The values of the periods and their covariant derivatives, at the attractor points, are identified in terms of critical values of the L-functions of the modular groups. Thus the critical L-values enter into the calculation of physical quantities such as the area of the black hole in the 4D spacetime. In our search for additional rank two attractor points, we perform a statistical analysis of the numerator of the zeta-function and are led to conjecture that the coefficients in this polynomial are distributed according to the statistics of random USp(4) matrices.
9.782565
10.842623
11.962246
10.173799
10.653156
10.762498
10.811679
10.926268
10.27909
11.762259
9.978202
9.715165
10.010544
9.859596
10.063105
9.865444
9.735674
9.758032
9.773459
10.296348
9.666824
hep-th/9506067
Anton Kapustin
S.Skorik, A.Kapustin
Surface excitations and surface energy of the antiferromagnetic XXZ chain by the Bethe ansatz approach
Revtex file with 2 figures. Complementary remarks added
J.Phys.A29:1629-1638,1996
10.1088/0305-4470/29/8/011
USC-95-015, CALT-68-1998
hep-th
null
We study boundary bound states using the Bethe ansatz formalism for the finite $XXZ$ $(\Delta>1)$ chain in a boundary magnetic field $h$. Boundary bound states are represented by the ``boundary strings'' similar to those described in the work of H.Saleur, S.Skorik. We find that for certain values of $h$ the ground state wave function contains boundary strings, and from this infer the existence of two ``critical'' fields in agreement with the results of Jimbo et al. An expression for the vacuum surface energy in the thermodynamic limit is derived and found to be an analytic function of $h$. We argue that boundary excitations appear only in pairs with ``bulk'' excitations or with boundary excitations at the other end of the chain. We mainly discuss the case where the magnetic fields at the left and the right boundaries are antiparallel, but we also comment on the case of the parallel fields. In the Ising ($\Delta=\infty$) and isotropic ($\Delta=1$) limits our results agree with those previously known.
[ { "created": "Fri, 9 Jun 1995 21:11:09 GMT", "version": "v1" }, { "created": "Tue, 27 Jun 1995 00:17:46 GMT", "version": "v2" } ]
2008-11-26
[ [ "Skorik", "S.", "" ], [ "Kapustin", "A.", "" ] ]
We study boundary bound states using the Bethe ansatz formalism for the finite $XXZ$ $(\Delta>1)$ chain in a boundary magnetic field $h$. Boundary bound states are represented by the ``boundary strings'' similar to those described in the work of H.Saleur, S.Skorik. We find that for certain values of $h$ the ground state wave function contains boundary strings, and from this infer the existence of two ``critical'' fields in agreement with the results of Jimbo et al. An expression for the vacuum surface energy in the thermodynamic limit is derived and found to be an analytic function of $h$. We argue that boundary excitations appear only in pairs with ``bulk'' excitations or with boundary excitations at the other end of the chain. We mainly discuss the case where the magnetic fields at the left and the right boundaries are antiparallel, but we also comment on the case of the parallel fields. In the Ising ($\Delta=\infty$) and isotropic ($\Delta=1$) limits our results agree with those previously known.
7.878977
7.917027
9.377288
7.964847
9.219052
8.479514
8.351322
7.920261
7.919085
9.205524
7.661547
7.722449
8.346646
7.878678
7.860079
7.79041
7.589816
7.483587
7.822437
8.356359
7.668188
hep-th/0606204
Yasuhiro Sekino
Ben Freivogel, Yasuhiro Sekino, Leonard Susskind, Chen-Pin Yeh
A Holographic Framework for Eternal Inflation
53 pages, 7 figures; v2: minor corrections, typos in section 6.2 corrected
Phys.Rev.D74:086003,2006
10.1103/PhysRevD.74.086003
SU-ITP-06-18, OIQP-06-07, UCB-PTH-06/12, LBNL-60518
hep-th
null
In this paper we provide some circumstantial evidence for a holographic duality between bubble nucleation in an eternally inflating universe and a Euclidean conformal field theory. The holographic correspondence (which is different than Strominger's dS/CFT duality) relates the decay of (3+1)-dimensional de Sitter space to a two-dimensional CFT. It is not associated with pure de Sitter space, but rather with Coleman-De Luccia bubble nucleation. Alternatively, it can be thought of as a holographic description of the open, infinite, FRW cosmology that results from such a bubble. The conjectured holographic representation is of a new type that combines holography with the Wheeler-DeWitt formalism to produce a Wheeler-DeWitt theory that lives on the spatial boundary of a k=-1 FRW cosmology. We also argue for a more ambitious interpretation of the Wheeler-DeWitt CFT as a holographic dual of the entire Landscape.
[ { "created": "Wed, 21 Jun 2006 09:48:50 GMT", "version": "v1" }, { "created": "Sun, 30 Jul 2006 04:35:07 GMT", "version": "v2" } ]
2008-11-26
[ [ "Freivogel", "Ben", "" ], [ "Sekino", "Yasuhiro", "" ], [ "Susskind", "Leonard", "" ], [ "Yeh", "Chen-Pin", "" ] ]
In this paper we provide some circumstantial evidence for a holographic duality between bubble nucleation in an eternally inflating universe and a Euclidean conformal field theory. The holographic correspondence (which is different than Strominger's dS/CFT duality) relates the decay of (3+1)-dimensional de Sitter space to a two-dimensional CFT. It is not associated with pure de Sitter space, but rather with Coleman-De Luccia bubble nucleation. Alternatively, it can be thought of as a holographic description of the open, infinite, FRW cosmology that results from such a bubble. The conjectured holographic representation is of a new type that combines holography with the Wheeler-DeWitt formalism to produce a Wheeler-DeWitt theory that lives on the spatial boundary of a k=-1 FRW cosmology. We also argue for a more ambitious interpretation of the Wheeler-DeWitt CFT as a holographic dual of the entire Landscape.
7.86563
8.197765
8.624749
7.16481
7.739429
7.504744
7.249533
7.605465
7.623565
8.798841
7.094748
7.289846
7.775147
7.210123
7.439415
7.323837
7.318818
7.25784
7.291079
7.742856
7.355519
1503.08607
Alikram Aliev
Alikram N. Aliev
Superradiance and instability of small rotating charged AdS black holes in all dimensions
20 pages, REVTeX; Minor changes, new references added
null
10.1140/epjc/s10052-016-3902-6
null
hep-th astro-ph.HE gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Rotating small AdS black holes exhibit the superradiant instability to low-frequency scalar perturbations, which is amenable to a complete analytic description in four dimensions. In this paper, we extend this description to all higher dimensions, focusing on slowly rotating charged AdS black holes with a single angular momentum. We divide the spacetime of these black holes into the near-horizon and far regions and find solutions to the scalar wave equation in each of these regions. Next, we perform the matching of these solutions in the overlap between the regions, by employing the idea that the orbital quantum number $ \ell $ can be thought of as an approximate integer. Thus, we obtain the complete low-frequency solution that allows us to calculate the complex frequency spectrum of quasinormal modes, whose imaginary part is determined by a small damping parameter. Finally, we find a remarkably instructive expression for the damping parameter, which appears to be a complex quantity in general. We show that the real part of the damping parameter can be used to give a {\it universal} analytic description of the superradiant instability for slowly rotating charged AdS black holes in all spacetime dimensions.
[ { "created": "Mon, 30 Mar 2015 09:20:03 GMT", "version": "v1" }, { "created": "Mon, 7 Sep 2015 21:34:32 GMT", "version": "v2" } ]
2016-03-23
[ [ "Aliev", "Alikram N.", "" ] ]
Rotating small AdS black holes exhibit the superradiant instability to low-frequency scalar perturbations, which is amenable to a complete analytic description in four dimensions. In this paper, we extend this description to all higher dimensions, focusing on slowly rotating charged AdS black holes with a single angular momentum. We divide the spacetime of these black holes into the near-horizon and far regions and find solutions to the scalar wave equation in each of these regions. Next, we perform the matching of these solutions in the overlap between the regions, by employing the idea that the orbital quantum number $ \ell $ can be thought of as an approximate integer. Thus, we obtain the complete low-frequency solution that allows us to calculate the complex frequency spectrum of quasinormal modes, whose imaginary part is determined by a small damping parameter. Finally, we find a remarkably instructive expression for the damping parameter, which appears to be a complex quantity in general. We show that the real part of the damping parameter can be used to give a {\it universal} analytic description of the superradiant instability for slowly rotating charged AdS black holes in all spacetime dimensions.
7.715864
7.593005
7.28689
7.312702
7.66118
7.685301
7.979566
7.280784
7.400606
8.026644
7.311945
7.192864
7.164034
7.172582
7.490815
7.406103
7.365152
7.441766
7.247835
7.377629
7.191984
1406.6000
Sungjay Lee
Jeffrey A. Harvey, David Kutasov and Sungjay Lee
Comments on Quantum Higgs Vacua
1+13 pages
null
null
EFI-14-20
hep-th
http://creativecommons.org/licenses/publicdomain/
We study two-dimensional N=(4,4) supersymmetric gauge theories which do not have classical Higgs branches, but are believed to have isolated quantum Higgs vacua. We provide arguments for the existence of such vacua based on brane dynamics in string theory and the supersymmetric partition sums of the gauge theories.
[ { "created": "Mon, 23 Jun 2014 17:40:11 GMT", "version": "v1" } ]
2014-06-24
[ [ "Harvey", "Jeffrey A.", "" ], [ "Kutasov", "David", "" ], [ "Lee", "Sungjay", "" ] ]
We study two-dimensional N=(4,4) supersymmetric gauge theories which do not have classical Higgs branches, but are believed to have isolated quantum Higgs vacua. We provide arguments for the existence of such vacua based on brane dynamics in string theory and the supersymmetric partition sums of the gauge theories.
8.025488
6.518556
8.912837
6.344878
6.702522
6.672377
6.57355
6.692639
6.155435
8.867723
6.672416
6.576554
7.959065
6.481667
6.560807
6.594238
6.60421
6.868398
6.646543
7.749641
6.608005
hep-th/9707177
Francis Vendrell
M.E. Ortiz, F. Vendrell
Thermal radiation in non-static curved spacetimes: quantum mechanical path integrals and configuration space topology
20 pages, major revised version, 9 figures, new title
Phys.Rev.D59:084005,1999
10.1103/PhysRevD.59.084005
Imperial/TP/96-97/55
hep-th gr-qc quant-ph
null
A quantum mechanical path integral derivation is given of a thermal propagator in non-static Gui spacetime. The thermal nature of the propagator is understood in terms of homotopically non-trivial paths in the configuration space appropriate to tortoise coordinates. The connection to thermal emission from collapsing black holes is discussed.
[ { "created": "Mon, 21 Jul 1997 12:06:11 GMT", "version": "v1" }, { "created": "Fri, 19 Jun 1998 12:51:49 GMT", "version": "v2" } ]
2009-12-15
[ [ "Ortiz", "M. E.", "" ], [ "Vendrell", "F.", "" ] ]
A quantum mechanical path integral derivation is given of a thermal propagator in non-static Gui spacetime. The thermal nature of the propagator is understood in terms of homotopically non-trivial paths in the configuration space appropriate to tortoise coordinates. The connection to thermal emission from collapsing black holes is discussed.
22.863613
18.821434
18.584139
17.038849
17.851894
21.644562
16.806726
17.488962
18.646349
20.284304
19.115227
17.480703
17.144897
16.304695
17.794741
17.478199
17.579174
17.235983
17.719719
16.252874
17.346041
hep-th/9909199
Erich Poppitz
Alan Chodos and Erich Poppitz
Warp Factors and Extended Sources in Two Transverse Dimensions
11 pages, LaTeX; References and acknowledgments added
Phys.Lett.B471:119-127,1999
10.1016/S0370-2693(99)01356-8
YCTP-P26-99
hep-th hep-ph
null
We study the solutions of the Einstein equations in (d+2)-dimensions, describing parallel p-branes (p=d-1) in a space with two transverse dimensions of positive gaussian curvature. These solutions generalize the solutions of Deser and Jackiw of point particle sources in (2+1)-dimensional gravity with cosmological constant. Determination of the metric is reduced to finding the roots of a simple algebraic equation. These roots also determine the nontrivial "warp factors" of the metric at the positions of the branes. We discuss the possible role of these solutions and the importance of "warp factors" in the context of the large extra dimensions scenario.
[ { "created": "Tue, 28 Sep 1999 18:48:54 GMT", "version": "v1" }, { "created": "Thu, 30 Sep 1999 17:16:42 GMT", "version": "v2" } ]
2010-04-06
[ [ "Chodos", "Alan", "" ], [ "Poppitz", "Erich", "" ] ]
We study the solutions of the Einstein equations in (d+2)-dimensions, describing parallel p-branes (p=d-1) in a space with two transverse dimensions of positive gaussian curvature. These solutions generalize the solutions of Deser and Jackiw of point particle sources in (2+1)-dimensional gravity with cosmological constant. Determination of the metric is reduced to finding the roots of a simple algebraic equation. These roots also determine the nontrivial "warp factors" of the metric at the positions of the branes. We discuss the possible role of these solutions and the importance of "warp factors" in the context of the large extra dimensions scenario.
8.691094
8.362328
8.444551
7.448838
8.535596
7.928468
7.71869
7.888756
7.685728
8.692763
7.512879
7.736401
7.952233
7.649323
7.620074
7.934491
7.665782
7.421916
7.932261
8.044329
7.860581
hep-th/9711022
Alexander Bylev
A.B.Bylev, V.A.Franke, E.V.Prokhvatilov
Zero-mode contribution to the light-front Hamiltonian of Yukawa type models
14 pages, Latex, revised version with minor changes, Submitted to J.Phys.G
J.Phys.G24:939-952,1998
10.1088/0954-3899/24/5/003
null
hep-th
null
Light-front Hamiltonian for Yukawa type models is determined without the framework of canonical light-front formalism. Special attention is given to the contribution of zero modes.
[ { "created": "Wed, 5 Nov 1997 10:07:00 GMT", "version": "v1" }, { "created": "Tue, 11 Nov 1997 15:09:00 GMT", "version": "v2" }, { "created": "Thu, 13 Nov 1997 08:19:40 GMT", "version": "v3" } ]
2008-11-26
[ [ "Bylev", "A. B.", "" ], [ "Franke", "V. A.", "" ], [ "Prokhvatilov", "E. V.", "" ] ]
Light-front Hamiltonian for Yukawa type models is determined without the framework of canonical light-front formalism. Special attention is given to the contribution of zero modes.
24.678322
18.028412
15.303706
14.619686
22.080389
20.843918
18.782413
17.079203
14.231217
18.687031
15.860868
17.466019
16.727064
17.194077
17.602501
16.886383
16.927837
17.567753
16.557302
16.343927
16.568253
hep-th/9904042
Sanefumi Moriyama
Hiroyuki Hata and Sanefumi Moriyama
Conformal Symmetry and A New Gauge in the Matrix Model
17 pages, LaTeX, no figures; v2: Introduction modified, references added and typos corrected; v3: Introduction changed; v4: Eq.(12) corrected; v5: final version to appear in Phys. Rev. D
Phys. Rev. D 60, 126006 (1999)
10.1103/PhysRevD.60.126006
KUNS-1568
hep-th
null
We generalize the background gauge in the Matrix model to propose a new gauge which is useful for discussing the conformal symmetry. In this gauge, the special conformal transformation (SCT) as the isometry of the near-horizon geometry of the D-particle solution is directly reproduced with the correct coefficient as the quantum correction to the SCT in the Matrix model. We also present a general argument for the relation between the gauge choice and the field redefinition in the Matrix model.
[ { "created": "Wed, 7 Apr 1999 06:16:05 GMT", "version": "v1" }, { "created": "Sat, 17 Apr 1999 03:15:36 GMT", "version": "v2" }, { "created": "Fri, 11 Jun 1999 07:06:26 GMT", "version": "v3" }, { "created": "Fri, 16 Jul 1999 05:55:03 GMT", "version": "v4" }, { "created": "Mon, 13 Sep 1999 03:26:33 GMT", "version": "v5" } ]
2016-08-25
[ [ "Hata", "Hiroyuki", "" ], [ "Moriyama", "Sanefumi", "" ] ]
We generalize the background gauge in the Matrix model to propose a new gauge which is useful for discussing the conformal symmetry. In this gauge, the special conformal transformation (SCT) as the isometry of the near-horizon geometry of the D-particle solution is directly reproduced with the correct coefficient as the quantum correction to the SCT in the Matrix model. We also present a general argument for the relation between the gauge choice and the field redefinition in the Matrix model.
11.054982
8.219242
10.769765
9.049786
9.247534
9.003091
9.393683
8.765061
8.562707
12.650553
9.690988
10.114281
10.385259
10.36609
10.45243
10.134425
10.050601
9.871705
10.203073
10.725013
9.806516
1906.10072
Finnian Gray
Ramiro Cayuso, Finnian Gray, David Kubiznak, Aoibheann Margalit, Renato Gomes Souza, Leander Thiele
Principal Tensor Strikes Again: Separability of Vector Equations with Torsion
8 pages
null
10.1016/j.physletb.2019.07.007
null
hep-th gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Many black hole spacetimes with a 3-form field exhibit a hidden symmetry encoded in a torsion generalization of the principal Killing--Yano tensor. This tensor determines basic properties of such black holes while also underlying the separability of the Hamilton--Jacobi, Klein--Gordon, and (torsion-modified) Dirac field equations in their background. As a specific example, we consider the Chong--Cveti\v{c}--L\"u--Pope black hole of $D=5$ minimal gauged supergravity and show that the torsion-modified vector field equations can also be separated, with the principal tensor playing a key role in the separability ansatz. For comparison, separability of the Proca field in higher-dimensional Kerr--NUT--AdS spacetimes (including new explicit formulae in odd dimensions) is also presented.
[ { "created": "Mon, 24 Jun 2019 16:45:07 GMT", "version": "v1" } ]
2019-07-10
[ [ "Cayuso", "Ramiro", "" ], [ "Gray", "Finnian", "" ], [ "Kubiznak", "David", "" ], [ "Margalit", "Aoibheann", "" ], [ "Souza", "Renato Gomes", "" ], [ "Thiele", "Leander", "" ] ]
Many black hole spacetimes with a 3-form field exhibit a hidden symmetry encoded in a torsion generalization of the principal Killing--Yano tensor. This tensor determines basic properties of such black holes while also underlying the separability of the Hamilton--Jacobi, Klein--Gordon, and (torsion-modified) Dirac field equations in their background. As a specific example, we consider the Chong--Cveti\v{c}--L\"u--Pope black hole of $D=5$ minimal gauged supergravity and show that the torsion-modified vector field equations can also be separated, with the principal tensor playing a key role in the separability ansatz. For comparison, separability of the Proca field in higher-dimensional Kerr--NUT--AdS spacetimes (including new explicit formulae in odd dimensions) is also presented.
7.51461
7.073548
6.887047
6.401653
6.962934
7.111794
6.753853
6.671872
6.995849
8.459328
6.936099
7.520957
7.221041
6.826297
7.561632
7.228761
7.646785
6.793722
7.254913
6.863493
7.409303
hep-th/9302118
Louis Crane
David N. Yetter and Louis Crane
We Are Not Stuck With Gluing
2 pages
null
null
null
hep-th math.QA
null
We show that the construction of Ocneanu, which yields 1 for any 4D manifold, is not identical to our construction, which gives different numbers for different manifolds.
[ { "created": "Wed, 24 Feb 1993 20:35:29 GMT", "version": "v1" } ]
2008-02-03
[ [ "Yetter", "David N.", "" ], [ "Crane", "Louis", "" ] ]
We show that the construction of Ocneanu, which yields 1 for any 4D manifold, is not identical to our construction, which gives different numbers for different manifolds.
15.905602
18.360275
16.03768
14.921073
16.048405
16.796175
17.115429
13.44426
14.313565
17.380114
15.522692
16.465776
15.666717
14.538271
14.707866
14.11828
15.928608
15.896477
15.692564
16.482832
14.033573
1512.05785
Piotr Sulkowski
Masahide Manabe, Piotr Su{\l}kowski
Quantum curves and conformal field theory
90 pages, published version
Phys. Rev. D 95, 126003 (2017)
10.1103/PhysRevD.95.126003
CALT-2015-061
hep-th math-ph math.MP math.QA
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
To a given algebraic curve we assign an infinite family of quantum curves (Schr\"odinger equations), which are in one-to-one correspondence with, and have the structure of, Virasoro singular vectors. For a spectral curve of a matrix model we build such quantum curves out of an appropriate representation of the Virasoro algebra, encoded in the structure of the $\alpha/\beta$-deformed matrix integral and its loop equation. We generalize this construction to a large class of algebraic curves by means of a refined topological recursion. We also specialize this construction to various specific matrix models with polynomial and logarithmic potentials, and among other results, show that various ingredients familiar in the study of conformal field theory (Ward identities, correlation functions and a representation of Virasoro operators acting thereon, BPZ equations) arise upon specialization of our formalism to the multi-Penner matrix model.
[ { "created": "Thu, 17 Dec 2015 21:00:10 GMT", "version": "v1" }, { "created": "Thu, 6 Jul 2017 11:48:24 GMT", "version": "v2" } ]
2017-07-07
[ [ "Manabe", "Masahide", "" ], [ "Sułkowski", "Piotr", "" ] ]
To a given algebraic curve we assign an infinite family of quantum curves (Schr\"odinger equations), which are in one-to-one correspondence with, and have the structure of, Virasoro singular vectors. For a spectral curve of a matrix model we build such quantum curves out of an appropriate representation of the Virasoro algebra, encoded in the structure of the $\alpha/\beta$-deformed matrix integral and its loop equation. We generalize this construction to a large class of algebraic curves by means of a refined topological recursion. We also specialize this construction to various specific matrix models with polynomial and logarithmic potentials, and among other results, show that various ingredients familiar in the study of conformal field theory (Ward identities, correlation functions and a representation of Virasoro operators acting thereon, BPZ equations) arise upon specialization of our formalism to the multi-Penner matrix model.
10.980671
10.837114
13.105486
10.763779
11.911039
10.818425
11.691572
11.466979
11.377069
14.568222
10.3143
10.466801
11.195955
10.310965
10.472772
10.529887
10.667177
10.387992
10.545189
10.69948
10.35346
1902.01700
Shin-Ichiro Kumamoto
Ken-Ichi Aoki, Tamao Kobayashi, Shin-Ichiro Kumamoto, Shinnosuke Onai, Daisuke Sato
Singularity Free Direct Calculation of Spontaneous Mass Generation
null
The Science Reports of Kanazawa University 61(2017) 1
null
KANAZAWA-18-08
hep-th nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a new iterative method to directly calculate the spontaneous mass generation. It is regarded as a new regularization method resembling the finite volume calculation which assures non-negative fluctuation property at every stage. We work with the Nambu--Jona-Lasinio model and the strong coupling gauge theory where the dynamical chiral symmetry breaking occurs. We are able to conclude the physical mass definitely without encountering any singularity nor recourse to any additional consideration like the free energy comparison. However in special case of the 1st order phase transition, we find that the iterative method has a chance to go wrong.
[ { "created": "Mon, 4 Feb 2019 03:53:06 GMT", "version": "v1" } ]
2019-02-06
[ [ "Aoki", "Ken-Ichi", "" ], [ "Kobayashi", "Tamao", "" ], [ "Kumamoto", "Shin-Ichiro", "" ], [ "Onai", "Shinnosuke", "" ], [ "Sato", "Daisuke", "" ] ]
We propose a new iterative method to directly calculate the spontaneous mass generation. It is regarded as a new regularization method resembling the finite volume calculation which assures non-negative fluctuation property at every stage. We work with the Nambu--Jona-Lasinio model and the strong coupling gauge theory where the dynamical chiral symmetry breaking occurs. We are able to conclude the physical mass definitely without encountering any singularity nor recourse to any additional consideration like the free energy comparison. However in special case of the 1st order phase transition, we find that the iterative method has a chance to go wrong.
19.872303
18.621048
21.013258
19.480631
21.537773
19.255831
19.560928
18.874767
18.588192
20.554798
19.532841
19.344234
18.861443
19.048464
18.974337
18.801584
19.401583
19.215162
18.859688
18.683311
18.543659
hep-th/9706064
Kyoung Ho Han
Kwanghoon Hahm, KyoungHo Han and H. J. Shin
Composite Skyrme Model with Vector Mesons
LaTeX, 9 pages, 3 figures, to be published in Phys. Rev. D
Phys.Rev. D56 (1997) 1812-1815
10.1103/PhysRevD.56.1812
SNUCTP 97-080
hep-th
null
We study the composite Skyrme model, proposed by Cheung and G\"{u}rsey, introducing vector mesons in a chiral Lagrangian. We calculate the static properties of baryons and compare with results obtained from models without vector mesons.
[ { "created": "Tue, 10 Jun 1997 06:25:48 GMT", "version": "v1" } ]
2009-10-30
[ [ "Hahm", "Kwanghoon", "" ], [ "Han", "KyoungHo", "" ], [ "Shin", "H. J.", "" ] ]
We study the composite Skyrme model, proposed by Cheung and G\"{u}rsey, introducing vector mesons in a chiral Lagrangian. We calculate the static properties of baryons and compare with results obtained from models without vector mesons.
10.866682
9.045992
8.055139
9.061519
8.911199
10.579526
8.220571
10.272235
8.504875
9.067042
8.853117
10.271026
9.686215
9.534258
9.711606
10.434641
9.48556
10.149003
9.144836
9.658377
9.966962
hep-th/0611279
Kwang Sik Jeong
Kiwoon Choi, Kwang Sik Jeong
String theoretic QCD axion with stabilized saxion and the pattern of supersymmetry breaking
JHEP style, 21 pages, 3 figures; typos corrected
JHEP 0701:103,2007
10.1088/1126-6708/2007/01/103
KAIST-TH 2006/11
hep-th hep-ph
null
String theoretic axion is a prime candidate for the QCD axion solving the strong CP problem. For a successful realization of the QCD axion in string theory, one needs to stabilize moduli including the scalar partner (saxion) of the QCD axion, while keeping the QCD axion unfixed until the low energy QCD instanton effects are turned on. We note that a simple generalization of KKLT moduli stabilization provides such set-up realizing the axion solution to the strong CP problem. Although some details of moduli stabilization are different from the original KKLT scenario, this set-up leads to the mirage mediation pattern of soft SUSY breaking terms as in the KKLT case, preserving flavor and CP as a consequence of approximate scaling and axionic shift symmetries. The set-up also gives an interesting pattern of moduli masses which might avoid the cosmological moduli, gravitino and axion problems.
[ { "created": "Mon, 27 Nov 2006 05:07:14 GMT", "version": "v1" }, { "created": "Mon, 11 Dec 2006 06:13:46 GMT", "version": "v2" }, { "created": "Wed, 27 Dec 2006 17:20:55 GMT", "version": "v3" } ]
2010-10-27
[ [ "Choi", "Kiwoon", "" ], [ "Jeong", "Kwang Sik", "" ] ]
String theoretic axion is a prime candidate for the QCD axion solving the strong CP problem. For a successful realization of the QCD axion in string theory, one needs to stabilize moduli including the scalar partner (saxion) of the QCD axion, while keeping the QCD axion unfixed until the low energy QCD instanton effects are turned on. We note that a simple generalization of KKLT moduli stabilization provides such set-up realizing the axion solution to the strong CP problem. Although some details of moduli stabilization are different from the original KKLT scenario, this set-up leads to the mirage mediation pattern of soft SUSY breaking terms as in the KKLT case, preserving flavor and CP as a consequence of approximate scaling and axionic shift symmetries. The set-up also gives an interesting pattern of moduli masses which might avoid the cosmological moduli, gravitino and axion problems.
7.130882
6.844206
7.236266
6.721862
7.148254
7.159318
6.960501
6.943764
6.934523
7.562775
6.794302
7.098864
7.175997
6.891516
6.837743
6.917711
7.059493
6.836289
7.092729
6.919018
6.774457
hep-th/9510073
Richard Grimm
R. Grimm
Supergravity, Linear Multiplets, and Chern-Simons Forms
null
null
null
null
hep-th
null
Some general features of locally supersymmetric theories (N=1 in four dimensions) involving Chern-Simons forms and antisymmetric tensors are sketched out. The relevance of the three-form multiplet both for the description of Chern-Simons forms and the supersymmetry properties of the gaugino condensate is pointed out.
[ { "created": "Wed, 11 Oct 1995 16:27:45 GMT", "version": "v1" } ]
2007-05-23
[ [ "Grimm", "R.", "" ] ]
Some general features of locally supersymmetric theories (N=1 in four dimensions) involving Chern-Simons forms and antisymmetric tensors are sketched out. The relevance of the three-form multiplet both for the description of Chern-Simons forms and the supersymmetry properties of the gaugino condensate is pointed out.
11.517406
7.60249
10.013547
8.514589
8.646813
8.231744
9.519993
8.23927
8.053375
9.434524
9.148114
8.589454
9.860593
8.79503
8.744758
8.64945
8.731589
9.156526
8.948343
9.939409
8.790702
hep-th/0512251
Konstadinos Sfetsos
P.Marios Petropoulos and Konstadinos Sfetsos
NS5-branes on an ellipsis and novel marginal deformations with parafermions
24 pages
JHEP0601:167,2006
10.1088/1126-6708/2006/01/167
null
hep-th
null
We consider NS5-branes distributed along the circumference of an ellipsis and explicitly construct the corresponding gravitational background. This provides a continuous line of deformations between the limiting cases, considered before, in which the ellipsis degenerates into a circle or into a bar. We show that a slight deformation of the background corresponding to a circle distribution into an ellipsoidal one is described by a novel non-factorizable marginal perturbation of bilinears of dressed parafermions. The latter are naturally defined for the circle case since, as it was shown in the past, the background corresponds to an orbifold of the exact conformal field theory coset model SU(2)/U(1) times SL(2,R)/U(1). We explore the possibility to define parafermionic objects at generic points of the ellipsoidal families of backgrounds away from the circle point. We also discuss a new limiting case in which the ellipsis degenerates into two infinitely stretched parallel bars and show that the background is related to the Eguchi-Hanson metric, via T-duality.
[ { "created": "Tue, 20 Dec 2005 13:26:03 GMT", "version": "v1" } ]
2009-11-11
[ [ "Petropoulos", "P. Marios", "" ], [ "Sfetsos", "Konstadinos", "" ] ]
We consider NS5-branes distributed along the circumference of an ellipsis and explicitly construct the corresponding gravitational background. This provides a continuous line of deformations between the limiting cases, considered before, in which the ellipsis degenerates into a circle or into a bar. We show that a slight deformation of the background corresponding to a circle distribution into an ellipsoidal one is described by a novel non-factorizable marginal perturbation of bilinears of dressed parafermions. The latter are naturally defined for the circle case since, as it was shown in the past, the background corresponds to an orbifold of the exact conformal field theory coset model SU(2)/U(1) times SL(2,R)/U(1). We explore the possibility to define parafermionic objects at generic points of the ellipsoidal families of backgrounds away from the circle point. We also discuss a new limiting case in which the ellipsis degenerates into two infinitely stretched parallel bars and show that the background is related to the Eguchi-Hanson metric, via T-duality.
10.551582
11.181076
11.173529
10.200107
10.795187
11.569705
11.277608
10.316018
10.107599
12.566553
10.115026
10.144235
10.568459
10.000756
9.913823
10.124424
10.266369
9.802136
9.725694
10.505096
10.238955
hep-th/9910223
Heinrich Saller
Heinrich Saller (MPI fuer Physik, Werner-Heisenberg-Institut, Muenchen)
Duality Induced Reflections and CPT
18 pages, latex, macros included
Int.J.Theor.Phys. 39 (2000) 321-340
null
MPI-PhT/99-51
hep-th
null
The linear particle-antiparticle conjugation $\ty C$ and position space reflection $\ty P$ as well as the antilinear time reflection $\ty T$ are shown to be inducable by the selfduality of representations for the operation groups $\SU(2)$, $\SL(\C^2)$ and $\R$ for spin, Lorentz transformations and time translations resp. The definition of a colour compatible linear $\ty{CP}$-reflection for quarks as selfduality induced is impossible since triplet and antitriplet $\SU(3)$-representations are not linearly equivalent.
[ { "created": "Thu, 28 Oct 1999 09:23:45 GMT", "version": "v1" } ]
2016-09-06
[ [ "Saller", "Heinrich", "", "MPI fuer Physik, Werner-Heisenberg-Institut,\n Muenchen" ] ]
The linear particle-antiparticle conjugation $\ty C$ and position space reflection $\ty P$ as well as the antilinear time reflection $\ty T$ are shown to be inducable by the selfduality of representations for the operation groups $\SU(2)$, $\SL(\C^2)$ and $\R$ for spin, Lorentz transformations and time translations resp. The definition of a colour compatible linear $\ty{CP}$-reflection for quarks as selfduality induced is impossible since triplet and antitriplet $\SU(3)$-representations are not linearly equivalent.
15.702661
15.775949
17.354464
15.898198
16.232639
16.033991
16.464607
16.093973
14.371108
17.045801
13.941966
14.336912
15.344173
14.622308
14.816828
14.538201
14.682695
14.701554
15.006647
14.714905
14.370563
hep-th/9405081
Hugo Compean
H. Garcia-Compean, J.F. Plebanski, M. Przanowski
On Self-dual Gravity Structures on Ground Ring Manifolds in Two-Dimensional String Theory
17+1 pages, TeX, no figures, corrected ps version
Rev.Mex.Fis.40:547,1994
null
CINVESTAV-PHYS 06/94
hep-th
null
We generalize the geometric structures generated by Witten's ground ring. It is shown that these generalized structures involve in a natural way some geometric constructions from Self-dual gravity [1,12]. The formal twistor construction on full quantum ground ring manifold is also given.
[ { "created": "Thu, 12 May 1994 16:15:39 GMT", "version": "v1" }, { "created": "Fri, 31 Aug 2001 01:40:52 GMT", "version": "v2" } ]
2011-10-11
[ [ "Garcia-Compean", "H.", "" ], [ "Plebanski", "J. F.", "" ], [ "Przanowski", "M.", "" ] ]
We generalize the geometric structures generated by Witten's ground ring. It is shown that these generalized structures involve in a natural way some geometric constructions from Self-dual gravity [1,12]. The formal twistor construction on full quantum ground ring manifold is also given.
39.8381
33.714489
46.032169
33.814751
37.66674
39.746822
39.358089
39.199715
34.101894
58.193581
36.164509
34.57515
38.068378
33.352844
33.557301
33.523792
35.144077
35.831966
34.5228
40.680447
32.819633
hep-th/0605014
Mark Hindmarsh
Mark Hindmarsh and P.M. Saffin
Scaling in a SU(2)/Z_3 model of cosmic superstring networks
12pp, 3 figs
JHEP0608:066,2006
10.1088/1126-6708/2006/08/066
null
hep-th
null
Motivated by recent developments in superstring theory in the cosmological context, we examine a field theory which contains string networks with 3-way junctions. We perform numerical simulations of this model, identify the length scales of the network that forms, and provide evidence that the length scales tend towards a scaling regime, growing in proportion to time. We infer that the presence of junctions does not in itself cause a superstring network to dominate the energy density of the early Universe.
[ { "created": "Mon, 1 May 2006 15:09:50 GMT", "version": "v1" } ]
2009-11-11
[ [ "Hindmarsh", "Mark", "" ], [ "Saffin", "P. M.", "" ] ]
Motivated by recent developments in superstring theory in the cosmological context, we examine a field theory which contains string networks with 3-way junctions. We perform numerical simulations of this model, identify the length scales of the network that forms, and provide evidence that the length scales tend towards a scaling regime, growing in proportion to time. We infer that the presence of junctions does not in itself cause a superstring network to dominate the energy density of the early Universe.
13.148025
13.162995
11.778055
12.128963
12.629421
13.145092
13.290994
12.765765
12.508733
11.736658
12.378327
13.132721
12.420616
12.603501
12.496854
12.826201
12.604527
12.70858
12.802338
13.071738
12.273199
2312.04206
Tomoki Nosaka
Sanefumi Moriyama, Tomoki Nosaka
Affine Symmetries for ABJM Partition Function and its Generalization
37 pages, 5 pdf figures; v2: figure 5 added, published version
null
null
NITEP 191, OCU-PHYS 587
hep-th math-ph math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Partially motivated by the fact that the grand partition function of the ABJM theory or its generalization is expressed by a spectral operator enjoying symmetries of the Weyl group, it was found that the grand partition function satisfies the q-Painleve equation, which is constructed from the affine Weyl group. In this paper we clarify the affine symmetries of the grand partition function. With the affine symmetries, we find that the grand partition function extends naturally outside the fundamental domain of duality cascades and once the Painleve equation holds in the fundamental domain, so does it outside.
[ { "created": "Thu, 7 Dec 2023 10:47:06 GMT", "version": "v1" }, { "created": "Tue, 23 Jul 2024 04:54:49 GMT", "version": "v2" } ]
2024-07-24
[ [ "Moriyama", "Sanefumi", "" ], [ "Nosaka", "Tomoki", "" ] ]
Partially motivated by the fact that the grand partition function of the ABJM theory or its generalization is expressed by a spectral operator enjoying symmetries of the Weyl group, it was found that the grand partition function satisfies the q-Painleve equation, which is constructed from the affine Weyl group. In this paper we clarify the affine symmetries of the grand partition function. With the affine symmetries, we find that the grand partition function extends naturally outside the fundamental domain of duality cascades and once the Painleve equation holds in the fundamental domain, so does it outside.
10.366015
10.63426
12.623187
9.872795
10.969882
10.633431
9.824343
10.002997
10.770212
11.406139
10.019983
10.031237
10.993433
10.418204
10.39312
10.317445
10.110939
10.48163
10.202485
10.787504
9.709925
2404.03069
Victor Mishnyakov
V.Mishnyakov, A.Morozov, M.Reva, P.Suprun
From equations in coordinate space to Picard-Fuchs and back
null
null
null
null
hep-th math-ph math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We continue the development of a position space approach to equations for Feynman multi-loop integrals. The key idea of the approach is that unintegrated products of Greens functions in position space are still loop integral in momentum space. The natural place to start are the famous banana diagrams, which we explore in this paper. In position space, these are just products of $n$ propagators. Firstly, we explain that these functions satisfy an equation of order $2^n$. These should be compared with Picard-Fuchs equations derived for the momentum space integral. We find that the Fourier transform of the position space operator contains the Picard-Fuchs one as a rightmost factor. The order of these operators is a special issue, especially since the order in momentum space is governed by degree in $x$ in position space. For the generic mass case this factorization pattern is complicated and it seems like the order of the Fourier transformed position space operators is much bigger than that of the Picard-Fuchs. Furthermore, one may ask what happens if after factorization we take the Picard-Fuchs operators back into position space. We discover that the result is again factorized, with the rightmost factor being the original position space equation. We demonstrate how this works in examples and discuss implications for more sophisticated Feynman integrals.
[ { "created": "Wed, 3 Apr 2024 21:17:25 GMT", "version": "v1" } ]
2024-04-05
[ [ "Mishnyakov", "V.", "" ], [ "Morozov", "A.", "" ], [ "Reva", "M.", "" ], [ "Suprun", "P.", "" ] ]
We continue the development of a position space approach to equations for Feynman multi-loop integrals. The key idea of the approach is that unintegrated products of Greens functions in position space are still loop integral in momentum space. The natural place to start are the famous banana diagrams, which we explore in this paper. In position space, these are just products of $n$ propagators. Firstly, we explain that these functions satisfy an equation of order $2^n$. These should be compared with Picard-Fuchs equations derived for the momentum space integral. We find that the Fourier transform of the position space operator contains the Picard-Fuchs one as a rightmost factor. The order of these operators is a special issue, especially since the order in momentum space is governed by degree in $x$ in position space. For the generic mass case this factorization pattern is complicated and it seems like the order of the Fourier transformed position space operators is much bigger than that of the Picard-Fuchs. Furthermore, one may ask what happens if after factorization we take the Picard-Fuchs operators back into position space. We discover that the result is again factorized, with the rightmost factor being the original position space equation. We demonstrate how this works in examples and discuss implications for more sophisticated Feynman integrals.
12.369102
12.418247
13.242041
11.627531
13.599724
12.631848
13.611963
12.813228
12.149529
13.378201
11.653463
11.614733
12.493455
12.100386
12.12924
12.196077
12.4209
11.940997
12.116878
12.930643
11.967823
1510.03291
Leonardo Ospedal
P.C. Malta, L.P.R. Ospedal, K. Veiga and J.A. Helay\"el-Neto
Comparative aspects of spin-dependent interaction potentials for spin-1/2 and spin-1 matter fields
In this version (v5), a Corrigendum has been added after the published paper
Adv.High Energy Phys. 2016 (2016) 2531436
10.1155/2016/2531436
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This paper sets out to establish a comparative study between classes of spin- and velocity-dependent potentials for spin-1/2 and spin-1 matter currents/sources in the non-relativistic regime. Both (neutral massive) scalar and vector particles are considered to mediate the interactions between (pseudo-)scalar sources or (pseudo-)vector currents. Though our discussion is more general, we contemplate specific cases in which our results may describe the electromagnetic interaction with a massive (Proca-type) photon exchanged between two spin-1/2 or two spin-1 carriers. We highlight the similarities and peculiarities of the potentials for the two different types of charged matter and also focus our attention on the comparison between the particular aspects of two different field representations for spin-1 matter particles. We believe that our results may contribute to a further discussion of the relation between charge, spin and extensibility of elementary particles.
[ { "created": "Mon, 12 Oct 2015 14:11:53 GMT", "version": "v1" }, { "created": "Fri, 11 Dec 2015 10:24:42 GMT", "version": "v2" }, { "created": "Tue, 2 Feb 2016 12:59:51 GMT", "version": "v3" }, { "created": "Thu, 9 Jun 2016 19:22:27 GMT", "version": "v4" }, { "created": "Sat, 31 Dec 2016 15:59:46 GMT", "version": "v5" } ]
2017-01-03
[ [ "Malta", "P. C.", "" ], [ "Ospedal", "L. P. R.", "" ], [ "Veiga", "K.", "" ], [ "Helayël-Neto", "J. A.", "" ] ]
This paper sets out to establish a comparative study between classes of spin- and velocity-dependent potentials for spin-1/2 and spin-1 matter currents/sources in the non-relativistic regime. Both (neutral massive) scalar and vector particles are considered to mediate the interactions between (pseudo-)scalar sources or (pseudo-)vector currents. Though our discussion is more general, we contemplate specific cases in which our results may describe the electromagnetic interaction with a massive (Proca-type) photon exchanged between two spin-1/2 or two spin-1 carriers. We highlight the similarities and peculiarities of the potentials for the two different types of charged matter and also focus our attention on the comparison between the particular aspects of two different field representations for spin-1 matter particles. We believe that our results may contribute to a further discussion of the relation between charge, spin and extensibility of elementary particles.
14.257238
16.53356
15.327935
14.479935
15.515742
14.825245
13.802106
15.448551
14.811311
15.641719
14.211698
14.298577
14.576581
14.156307
13.9736
14.344855
14.125984
14.326519
14.328162
14.753451
14.249069
hep-th/9701160
Carlos Naon
M.V.Man\'ias, C.M. Na\'on and M.L.Trobo
Path-integral fermion-boson decoupling at finite temperature
12 pages, latex, no figures
Phys.Lett. B416 (1998) 157-162
10.1016/S0370-2693(97)01293-8
La Plata 97-01
hep-th
null
We show how to extend the standard functional approach to bosonisation, based on a decoupling change of path-integral variables, to the case in which a finite temperature is considered. As examples, in order to both illustrate and check the procedure, we derive the thermodynamical partition functions for the Thirring and Schwinger models.
[ { "created": "Tue, 28 Jan 1997 15:04:49 GMT", "version": "v1" } ]
2016-08-15
[ [ "Manías", "M. V.", "" ], [ "Naón", "C. M.", "" ], [ "Trobo", "M. L.", "" ] ]
We show how to extend the standard functional approach to bosonisation, based on a decoupling change of path-integral variables, to the case in which a finite temperature is considered. As examples, in order to both illustrate and check the procedure, we derive the thermodynamical partition functions for the Thirring and Schwinger models.
11.414798
8.932973
10.187316
8.807792
8.793538
8.436805
9.036361
8.94434
8.375314
11.419557
8.587873
9.029114
10.626822
9.4295
9.825595
9.664963
9.325071
9.145776
9.770442
10.307103
9.234349
hep-th/0410281
Filipe Paccetti Correia
Filipe Paccetti Correia, Michael G. Schmidt, Zurab Tavartkiladze
(BPS) Fayet-Iliopoulos Terms in 5D Orbifold SUGRA
LaTeX, 11 pages, 2 figures, extended discussion after (25) and (49), version published in PLB
Phys.Lett. B613 (2005) 83-90
10.1016/j.physletb.2005.03.002
CERN-PH-TH/2004-211 and HD-THEP-04-42
hep-th hep-ph
null
We discuss Fayet-Iliopoulos terms in the context of five-dimensional supergravity compactified on an orbifold. For this purpose we use our superfield formulation of the off-shell 5D SUGRA. In the case of tuned FI terms, contrary to other claims, we find BPS solutions which ensure that N=1 supersymmetry is unbroken also in warped geometries. As in the rigid case, the FI terms induce odd masses for charged hypermultiplets, leading to the (de)localisation of the KK wave-functions near the fix-point branes. In the case of ungauged U(1)_R symmetry, we present also supersymmetric warped solutions in the presence of non-trivial profiles of charged hyperscalars.
[ { "created": "Thu, 28 Oct 2004 17:51:37 GMT", "version": "v1" }, { "created": "Mon, 11 Apr 2005 16:22:24 GMT", "version": "v2" } ]
2009-11-10
[ [ "Correia", "Filipe Paccetti", "" ], [ "Schmidt", "Michael G.", "" ], [ "Tavartkiladze", "Zurab", "" ] ]
We discuss Fayet-Iliopoulos terms in the context of five-dimensional supergravity compactified on an orbifold. For this purpose we use our superfield formulation of the off-shell 5D SUGRA. In the case of tuned FI terms, contrary to other claims, we find BPS solutions which ensure that N=1 supersymmetry is unbroken also in warped geometries. As in the rigid case, the FI terms induce odd masses for charged hypermultiplets, leading to the (de)localisation of the KK wave-functions near the fix-point branes. In the case of ungauged U(1)_R symmetry, we present also supersymmetric warped solutions in the presence of non-trivial profiles of charged hyperscalars.
10.938213
10.454727
10.633962
9.917551
10.258933
10.211375
10.387995
10.01751
10.069859
12.101019
10.105652
10.162886
10.345417
9.830006
9.992152
10.339878
10.25772
10.509791
9.993663
10.364928
10.398777
hep-th/9706161
Paul Fendley
Paul Fendley
Excited-state energies and supersymmetric indices
20 pages, 6 figures, amslatex. Revision adds appendix describing analogous calculation for a free Dirac fermion. To appear in Advances in Theoretical and Mathematical Physics
null
null
null
hep-th
null
We study multi-soliton states in two-dimensional N=2 supersymmetric theories. We calculate their energy exactly as a function of mass and volume in the simplest integrable N=2 theory, the sine-Gordon model at a particular coupling. These energies are related to the expectation value $I= tr [\exp(in\pi F) \exp(-H/T)]$, where F is the fermion number. For n=1, this is Witten's index; for n an odd integer, we argue that $I$ is an index in the sense that it is independent of all D-term variations.
[ { "created": "Tue, 24 Jun 1997 01:54:03 GMT", "version": "v1" }, { "created": "Mon, 22 Sep 1997 21:27:27 GMT", "version": "v2" } ]
2008-02-03
[ [ "Fendley", "Paul", "" ] ]
We study multi-soliton states in two-dimensional N=2 supersymmetric theories. We calculate their energy exactly as a function of mass and volume in the simplest integrable N=2 theory, the sine-Gordon model at a particular coupling. These energies are related to the expectation value $I= tr [\exp(in\pi F) \exp(-H/T)]$, where F is the fermion number. For n=1, this is Witten's index; for n an odd integer, we argue that $I$ is an index in the sense that it is independent of all D-term variations.
11.695473
12.542921
15.690887
10.823225
13.697329
14.552673
13.268176
11.392799
11.663609
15.123689
11.829443
11.288898
13.288086
10.576098
10.948637
11.579929
11.22963
11.171609
11.527201
12.780328
10.917729
1805.00399
Dana Stanley Fine
Dana S. Fine and Stephen F. Sawin
Rigorous path integrals for supersymmetric quantum mechanics: completing the path integral proof of the index theorem
28 pages, see also arXiv:1605.06982v2 which gives more technical detail, but less physics overview
null
null
null
hep-th math-ph math.DG math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Many introductory courses in quantum mechanics include Feynman's time-slicing definition of the path integral, with a complete derivation of the propagator in the simplest of cases. However, attempts to generalize this, for instance to non-quadratic potentials, encounter formidable analytic issues in showing the successive approximations in fact converge to a definite expression for the path integral. The present work describes how to carry out the analysis for a class of Lagrangians broad enough to include the evolution, in imaginary time, of spinors constrained to live on a Riemannian manifold. For these Lagrangians, the successive time-slicing approximations converge. The limit provides a definition of the path integral which agrees with the imaginary-time Feynman propagator. With this as the definition, the steepest-descent approximation to the path integral for twisted $N=1/2$ supersymmetric quantum mechanics is provably correct. These results complete a new proof of the Atiyah-Singer index theorem for the twisted Dirac operator.
[ { "created": "Tue, 1 May 2018 15:32:09 GMT", "version": "v1" } ]
2018-05-02
[ [ "Fine", "Dana S.", "" ], [ "Sawin", "Stephen F.", "" ] ]
Many introductory courses in quantum mechanics include Feynman's time-slicing definition of the path integral, with a complete derivation of the propagator in the simplest of cases. However, attempts to generalize this, for instance to non-quadratic potentials, encounter formidable analytic issues in showing the successive approximations in fact converge to a definite expression for the path integral. The present work describes how to carry out the analysis for a class of Lagrangians broad enough to include the evolution, in imaginary time, of spinors constrained to live on a Riemannian manifold. For these Lagrangians, the successive time-slicing approximations converge. The limit provides a definition of the path integral which agrees with the imaginary-time Feynman propagator. With this as the definition, the steepest-descent approximation to the path integral for twisted $N=1/2$ supersymmetric quantum mechanics is provably correct. These results complete a new proof of the Atiyah-Singer index theorem for the twisted Dirac operator.
9.115236
9.595673
10.282318
8.695266
10.294205
10.270925
10.000479
8.864834
9.393159
10.250408
9.186284
8.49405
8.813102
8.563905
8.608625
8.689958
8.653633
8.69188
8.636449
9.018869
8.460198
2209.04296
Yuan-Tai Wang
Yuan-Tai Wang and Wen-Bin Pan
Pole-skipping of Holographic Correlators: Aspects of Gauge Symmetry and Generalizations
23 pages; typos and errors are fixed
null
10.1007/JHEP01(2023)174
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the framework of anti-de Sitter space/conformal field theory (AdS/CFT), we study the pole-skipping phenomenon of the holographic correlators of boundary operators. We explore the locations of the pole-skipping points case by case with the models of $U(1)$-gauged form fields propagating in the asymptotic AdS bulk of finite temperature. In general, in different cases all the first-order points are located at the Matsubara frequency with corresponding wave vectors regularly dispersed in the momentum space. Specifically, in the massless cases with $U(1)$ symmetry, the wave vectors of the pole-skipping points have a form-number dependence, and a trans-mode equivalence in the dual fields is found in correspondence with electromagnetic duality. In the massive cases with explicit symmetry breaking, we find that the appearance of a non-zero mass yields extra pole-skipping points which reduce to the massless results in zero mass limit. We expect in such kind of pole-skipping properties implications of distinctive physics in the chaotic systems. Our near-horizon computation is verified with the double-trace method especially in the example of 2-form where there is dimension-dependent boundary divergence. We illustrate in these cases that the pole-skipping properties of the holographic correlators are determined by the IR physics, consistent with the ordinary cases in previous studies.
[ { "created": "Fri, 9 Sep 2022 13:43:36 GMT", "version": "v1" }, { "created": "Mon, 17 Apr 2023 13:13:57 GMT", "version": "v2" } ]
2023-04-18
[ [ "Wang", "Yuan-Tai", "" ], [ "Pan", "Wen-Bin", "" ] ]
In the framework of anti-de Sitter space/conformal field theory (AdS/CFT), we study the pole-skipping phenomenon of the holographic correlators of boundary operators. We explore the locations of the pole-skipping points case by case with the models of $U(1)$-gauged form fields propagating in the asymptotic AdS bulk of finite temperature. In general, in different cases all the first-order points are located at the Matsubara frequency with corresponding wave vectors regularly dispersed in the momentum space. Specifically, in the massless cases with $U(1)$ symmetry, the wave vectors of the pole-skipping points have a form-number dependence, and a trans-mode equivalence in the dual fields is found in correspondence with electromagnetic duality. In the massive cases with explicit symmetry breaking, we find that the appearance of a non-zero mass yields extra pole-skipping points which reduce to the massless results in zero mass limit. We expect in such kind of pole-skipping properties implications of distinctive physics in the chaotic systems. Our near-horizon computation is verified with the double-trace method especially in the example of 2-form where there is dimension-dependent boundary divergence. We illustrate in these cases that the pole-skipping properties of the holographic correlators are determined by the IR physics, consistent with the ordinary cases in previous studies.
15.818586
15.370987
15.809515
14.153882
15.289553
15.23562
15.284173
14.348328
13.963799
17.109076
13.951579
14.576766
14.95919
14.423822
14.962592
14.924496
14.543471
14.646019
14.18723
14.962104
14.249616
2407.11849
Carlos Mafra
Carlos R. Mafra
Towards massive field-theory amplitudes from the cohomology of pure spinor superspace
14 pages. Compile with xetex to obtain correct offsets for hyperlink pointers
null
null
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
By analogy with the formula for the massless string disk amplitudes, we define massive field-theory tree amplitudes and conjecture that the BRST cohomology structure of pure spinor superspace fixes their form. We give evidence by deriving the pure spinor superspace expression of the massive field-theory n-point tree amplitude with one first-level massive and n-1 massless states in two ways: 1) from BRST cohomology arguments in pure spinor superspace and 2) from the ${\alpha^\prime}^2$ correction to the massless string amplitudes by inverting the unitarity constraint in superspace.
[ { "created": "Tue, 16 Jul 2024 15:30:09 GMT", "version": "v1" } ]
2024-07-17
[ [ "Mafra", "Carlos R.", "" ] ]
By analogy with the formula for the massless string disk amplitudes, we define massive field-theory tree amplitudes and conjecture that the BRST cohomology structure of pure spinor superspace fixes their form. We give evidence by deriving the pure spinor superspace expression of the massive field-theory n-point tree amplitude with one first-level massive and n-1 massless states in two ways: 1) from BRST cohomology arguments in pure spinor superspace and 2) from the ${\alpha^\prime}^2$ correction to the massless string amplitudes by inverting the unitarity constraint in superspace.
9.654976
9.814837
11.029527
8.96689
9.762597
9.303827
9.052859
8.88297
9.582133
11.685431
8.312617
8.94728
9.532945
8.515504
8.948933
9.251622
8.655509
8.670719
9.130736
9.547799
8.87328
0909.1879
Toshiya Kawai
Toshiya Kawai
Twisted Elliptic Genera of N=2 SCFTs in Two Dimensions
28 pages; v2 refs added
null
10.1088/1751-8113/45/39/395401
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The elliptic genera of two-dimensional N=2 superconformal field theories can be twisted by the action of the integral Heisenberg group if their U(1) charges are fractional. The basic properties of the resulting twisted elliptic genera and the associated twisted Witten indices are investigated with due attention to their behaviors in orbifoldization. Our findings are illustrated by and applied to several concrete examples. We give a better understanding of the duality phenomenon observed long before for certain Landau-Ginzburg models. We revisit and prove an old conjecture of Witten which states that every ADE Landau-Ginzburg model and the corresponding minimal model share the same elliptic genus. Mathematically, we establish ADE generalizations of the quintuple product identity.
[ { "created": "Thu, 10 Sep 2009 07:44:25 GMT", "version": "v1" }, { "created": "Sat, 12 Sep 2009 07:00:47 GMT", "version": "v2" } ]
2015-05-14
[ [ "Kawai", "Toshiya", "" ] ]
The elliptic genera of two-dimensional N=2 superconformal field theories can be twisted by the action of the integral Heisenberg group if their U(1) charges are fractional. The basic properties of the resulting twisted elliptic genera and the associated twisted Witten indices are investigated with due attention to their behaviors in orbifoldization. Our findings are illustrated by and applied to several concrete examples. We give a better understanding of the duality phenomenon observed long before for certain Landau-Ginzburg models. We revisit and prove an old conjecture of Witten which states that every ADE Landau-Ginzburg model and the corresponding minimal model share the same elliptic genus. Mathematically, we establish ADE generalizations of the quintuple product identity.
10.508609
10.960052
11.987962
9.443543
10.148052
10.386534
10.856515
10.780457
10.469994
13.880899
10.374036
9.893724
11.470458
10.149304
10.024518
9.710453
10.021532
9.988639
10.017921
11.389806
9.971602
hep-th/0501012
Shesansu Pal
Shesansu Pal
A new Ricci flat geometry
7pp, Kahlerian behavior is mentioned in section 2, along with two references and a note
Phys.Lett. B614 (2005) 201-206
10.1016/j.physletb.2005.03.077
null
hep-th
null
We are proposing a new Ricci flat metric constructed from an infinite family of Sasaki-Einstein, $Y^{(p,q)}$, geometries. This geometry contains a free parameter $s$ and in the $s\to 0$ limit we get back the usual CY. When this geometry is probed both by a stack of D3 and fractional D3 branes then the corresponding supergravity solution is found which is a warped product of this new 6-dimensional geometry and the flat $R^{3,1}$. This solution in the specific limit as mentioned above reproduces the solution found in hep-th/0412193. The integrated five-form field strength over $S^2\times S^3$ goes logarithmically but the argument of Log function is different than has been found before.
[ { "created": "Mon, 3 Jan 2005 20:19:17 GMT", "version": "v1" }, { "created": "Mon, 24 Jan 2005 17:33:56 GMT", "version": "v2" } ]
2010-04-05
[ [ "Pal", "Shesansu", "" ] ]
We are proposing a new Ricci flat metric constructed from an infinite family of Sasaki-Einstein, $Y^{(p,q)}$, geometries. This geometry contains a free parameter $s$ and in the $s\to 0$ limit we get back the usual CY. When this geometry is probed both by a stack of D3 and fractional D3 branes then the corresponding supergravity solution is found which is a warped product of this new 6-dimensional geometry and the flat $R^{3,1}$. This solution in the specific limit as mentioned above reproduces the solution found in hep-th/0412193. The integrated five-form field strength over $S^2\times S^3$ goes logarithmically but the argument of Log function is different than has been found before.
11.982792
11.313493
12.947992
10.684051
11.266428
11.120204
11.126874
10.903461
11.000937
13.602935
10.547559
10.418428
11.477921
10.422078
10.385214
10.331318
10.380271
10.84141
10.225023
11.851428
10.579722
hep-th/0306060
Victor Red'kov
V.M. Red'kov
Monopole BPS-Solutions of the Yang-Mills Equations in Space of Euclid, Riemann, and Lobachevski
7 pages
null
null
null
hep-th
null
Procedure of finding of the Bogomolny-Prasad-Sommerfield monopole solutions in the Georgi-Glashow model is investigated in detail on the backgrounds of three space models of constant curvature: Euclid, Riemann, Lobachevski's. Classification of possible solutions is given. It is shown that among all solutions there exist just three ones which reasonably and in a one-to-one correspondence can be associated with respective geometries. It is pointed out that the known non-singular BPS-solution in the flat Minkowski space can be understood as a result of somewhat artificial combining the Minkowski space background with a possibility naturally linked up with the Lobachewski geometry. The standpoint is brought forth that of primary interest should be regarded only three specifically distinctive solutions -- one for every curved space background. In the framework of those arguments the generally accepted status of the known monopole BPS-solution should be critically reconsidered and even might be given away.
[ { "created": "Sat, 7 Jun 2003 07:40:16 GMT", "version": "v1" } ]
2007-05-23
[ [ "Red'kov", "V. M.", "" ] ]
Procedure of finding of the Bogomolny-Prasad-Sommerfield monopole solutions in the Georgi-Glashow model is investigated in detail on the backgrounds of three space models of constant curvature: Euclid, Riemann, Lobachevski's. Classification of possible solutions is given. It is shown that among all solutions there exist just three ones which reasonably and in a one-to-one correspondence can be associated with respective geometries. It is pointed out that the known non-singular BPS-solution in the flat Minkowski space can be understood as a result of somewhat artificial combining the Minkowski space background with a possibility naturally linked up with the Lobachewski geometry. The standpoint is brought forth that of primary interest should be regarded only three specifically distinctive solutions -- one for every curved space background. In the framework of those arguments the generally accepted status of the known monopole BPS-solution should be critically reconsidered and even might be given away.
15.294029
15.32507
16.297878
14.529587
16.747633
15.612854
16.656307
14.656359
15.615836
15.844436
14.82256
14.662447
14.331681
14.029757
14.155913
14.335634
13.820392
14.136935
14.623608
14.977445
14.742344
0708.0022
Jeff Jones
T. Banks, S. Echols, J. L. Jones
Embedding the Pentagon
39 pages
JHEP 0710:105,2007
10.1088/1126-6708/2007/10/105
scipp-07/13
hep-th hep-ph
null
The Pentagon Model is an explicit supersymmetric extension of the Standard Model, which involves a new strongly-interacting SU(5) gauge theory at TeV-scale energies. We show that the Pentagon can be embedded into an SU(5) x SU(5) x SU(5) gauge group at the GUT scale. The doublet-triplet splitting problem, and proton decay compatible with experimental bounds, can be successfully addressed in this context. The simplest approach fails to provide masses for the lighter two generations of quarks and leptons; however, this problem can be solved by the addition of a pair of antisymmetric tensor fields and an axion.
[ { "created": "Tue, 31 Jul 2007 20:52:07 GMT", "version": "v1" }, { "created": "Wed, 26 Sep 2007 23:08:05 GMT", "version": "v2" } ]
2009-11-18
[ [ "Banks", "T.", "" ], [ "Echols", "S.", "" ], [ "Jones", "J. L.", "" ] ]
The Pentagon Model is an explicit supersymmetric extension of the Standard Model, which involves a new strongly-interacting SU(5) gauge theory at TeV-scale energies. We show that the Pentagon can be embedded into an SU(5) x SU(5) x SU(5) gauge group at the GUT scale. The doublet-triplet splitting problem, and proton decay compatible with experimental bounds, can be successfully addressed in this context. The simplest approach fails to provide masses for the lighter two generations of quarks and leptons; however, this problem can be solved by the addition of a pair of antisymmetric tensor fields and an axion.
7.621255
6.520828
7.430636
6.454893
6.580568
6.34262
6.534278
6.337999
6.109857
7.468307
7.127567
7.243352
6.990365
6.886184
6.707025
7.153505
6.955736
7.046375
6.80548
6.995467
7.32988
1411.5627
Xiao Mei Kuang
Xiao-Mei Kuang, Eleftherios Papantonopoulos, Bin Wang, Jian-Pin Wu
Dynamically generated gap from holography in the charged black brane with hyperscaling violation
17 pages,8 figures,version published in JHEP. arXiv admin note: text overlap with arXiv:1409.2945
JHEP 04(2015)137
10.1007/JHEP04(2015)137
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We holographically investigate the effects of a dipole coupling between a fermion field and a $U(1)$ gauge field on the dual fermionic sector in the charged gravity bulk with hyperscaling violation. We analytically study the features of the ultraviolet and infrared Green's functions of the dual fermionic system and we show that as the dipole coupling and the hyperscaling violation exponent are varied, the fluid possess Fermi, marginal Fermi, non-Fermi liquid phases and also an additional Mott insulating phase. We find that the increase of the hyperscaling violation exponent which effectively reduces the dimensionality of the system makes it harder for the Mott gap to be formed. We also show that the observed duality between zeros and poles in the presence of a dipole moment coupling still persists in theories with hyperscaling violation.
[ { "created": "Thu, 20 Nov 2014 18:06:35 GMT", "version": "v1" }, { "created": "Mon, 4 May 2015 08:50:22 GMT", "version": "v2" } ]
2015-05-20
[ [ "Kuang", "Xiao-Mei", "" ], [ "Papantonopoulos", "Eleftherios", "" ], [ "Wang", "Bin", "" ], [ "Wu", "Jian-Pin", "" ] ]
We holographically investigate the effects of a dipole coupling between a fermion field and a $U(1)$ gauge field on the dual fermionic sector in the charged gravity bulk with hyperscaling violation. We analytically study the features of the ultraviolet and infrared Green's functions of the dual fermionic system and we show that as the dipole coupling and the hyperscaling violation exponent are varied, the fluid possess Fermi, marginal Fermi, non-Fermi liquid phases and also an additional Mott insulating phase. We find that the increase of the hyperscaling violation exponent which effectively reduces the dimensionality of the system makes it harder for the Mott gap to be formed. We also show that the observed duality between zeros and poles in the presence of a dipole moment coupling still persists in theories with hyperscaling violation.
9.165795
7.173552
9.307115
7.823301
7.694613
7.687053
8.013073
7.509161
7.140388
9.81457
7.307508
8.12429
8.487506
8.309318
8.312947
8.042617
8.049008
8.024442
8.135608
8.779911
8.000786
1709.09222
Nobuchika Okada
Anish Ghoshal, Anupam Mazumdar, Nobuchika Okada, Desmond Villalba
On the Stability of Infinite Derivative Abelian Higgs
7 pages, 2 figures, the version accepted for publication in Physical Review D
Phys. Rev. D 97, 076011 (2018)
10.1103/PhysRevD.97.076011
null
hep-th hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Motivated by the stringy effects by modifying the local kinetic term of an Abelian Higgs field by the Gaussian kinetic term we show that the Higgs field does not possess any instability, the Yukawa coupling between the scalar and the fermion, the gauge coupling, and the self interaction of the Higgs yields exponentially suppressed running at high energies, showing that such class of theory never suffers from vacuum instability. We briefly discuss its implications for the early Universe cosmology.
[ { "created": "Tue, 26 Sep 2017 19:01:08 GMT", "version": "v1" }, { "created": "Mon, 9 Oct 2017 13:44:42 GMT", "version": "v2" }, { "created": "Sat, 7 Apr 2018 22:16:38 GMT", "version": "v3" } ]
2018-05-02
[ [ "Ghoshal", "Anish", "" ], [ "Mazumdar", "Anupam", "" ], [ "Okada", "Nobuchika", "" ], [ "Villalba", "Desmond", "" ] ]
Motivated by the stringy effects by modifying the local kinetic term of an Abelian Higgs field by the Gaussian kinetic term we show that the Higgs field does not possess any instability, the Yukawa coupling between the scalar and the fermion, the gauge coupling, and the self interaction of the Higgs yields exponentially suppressed running at high energies, showing that such class of theory never suffers from vacuum instability. We briefly discuss its implications for the early Universe cosmology.
17.178947
18.145676
17.374313
16.430855
16.788057
17.453817
18.5795
17.850115
16.708332
17.03093
16.066006
16.009682
15.764653
15.711934
16.050629
16.036415
15.753653
16.263138
15.493394
16.139122
15.356455
1909.09208
William Divine Linch III
Katrin Becker, Melanie Becker, Daniel Butter, William D. Linch III, Stephen Randall
Five-dimensional Supergravity in N = 1/2 Superspace
Published version. Contains improvements over v1 including relation to new-minimal supergravity and various formulations of off-shell 5D, N=1 supergravity
null
10.1007/JHEP03(2020)098
MI-TH-191
hep-th hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We construct 5D, N = 1 supergravity in a 4D, N = 1 superspace with an extra bosonic coordinate. This represents four of the supersymmetries and the associated Poincar\'e symmetries manifestly. The remaining four supersymmetries and the rest of the Poincar\'e symmetries are represented linearly but not manifestly. In the linearized approximation, the action reduces to the known superspace result. As an application of the formalism, we construct the $\int A\wedge R\wedge R$ invariant in this superspace.
[ { "created": "Thu, 19 Sep 2019 19:36:17 GMT", "version": "v1" }, { "created": "Thu, 16 Apr 2020 13:13:57 GMT", "version": "v2" } ]
2020-04-22
[ [ "Becker", "Katrin", "" ], [ "Becker", "Melanie", "" ], [ "Butter", "Daniel", "" ], [ "Linch", "William D.", "III" ], [ "Randall", "Stephen", "" ] ]
We construct 5D, N = 1 supergravity in a 4D, N = 1 superspace with an extra bosonic coordinate. This represents four of the supersymmetries and the associated Poincar\'e symmetries manifestly. The remaining four supersymmetries and the rest of the Poincar\'e symmetries are represented linearly but not manifestly. In the linearized approximation, the action reduces to the known superspace result. As an application of the formalism, we construct the $\int A\wedge R\wedge R$ invariant in this superspace.
6.645584
5.888641
7.416335
6.002926
6.17296
6.464814
6.122875
6.118771
6.159422
7.932953
5.968501
6.271108
6.849426
6.134113
6.163424
6.191479
6.101787
6.236724
6.047575
7.02624
6.15482
hep-th/0205225
Xin-zhou Li
Xin-zhou Li and Xiang-hua Zhai
Rigorous proof of attractive nature for Casimir force of p-odd hypercube
7 pages, no figure
J. Phys A: Math. Gen. 34 (2001)11053-11057
10.1088/0305-4470/34/49/320
null
hep-th
null
The Casimir effect giving rise to an attractive force between the configuration boundaries that confine the massless scalar field is rigorously proven for odd dimensional hypercube with the Dirichlet boundary conditions and different spacetime dimensions D by the Epstein zeta function regularization.
[ { "created": "Wed, 22 May 2002 04:19:38 GMT", "version": "v1" } ]
2009-11-07
[ [ "Li", "Xin-zhou", "" ], [ "Zhai", "Xiang-hua", "" ] ]
The Casimir effect giving rise to an attractive force between the configuration boundaries that confine the massless scalar field is rigorously proven for odd dimensional hypercube with the Dirichlet boundary conditions and different spacetime dimensions D by the Epstein zeta function regularization.
19.383957
15.985549
16.280634
17.702728
15.18307
15.983637
17.064127
14.472614
15.195717
20.217491
16.250656
15.816642
16.834049
15.564338
15.382975
16.195845
16.492617
15.611179
15.664323
16.738291
14.913391
2405.19409
Vivek Saxena
Vivek Saxena
A T-Duality of Non-Supersymmetric Heterotic Strings and an implication for Topological Modular Forms
26 pages + appendices; references updated
null
null
null
hep-th math-ph math.AT math.MP
http://creativecommons.org/licenses/by/4.0/
Motivated by recent developments connecting non-supersymmetric heterotic string theory to the theory of Topological Modular Forms (TMF), we show that the worldsheet theory with central charge $(17,\frac{3}{2})$ obtained by fibering the $(E_8)_1 \times (E_8)_1$ current algebra over the $\mathcal{N}=(0,1)$ sigma model on $S^{1}$ with antiperiodic spin structure (such that the two $E_8$ factors are exchanged as we go around the circle), is continuously connected to the $(E_8)_2$ theory in the Gaiotto$-$Johnson-Freyd$-$Witten sense of going "up and down the RG trajectories". Combined with the work of Tachikawa and Yamashita, this furnishes a physical derivation of the fact that the $(E_8)_2$ theory corresponds to the unique nontrivial torsion element $[(E_8)_2]$ of $\mathsf{TMF}^{31}$ with zero mod-2 elliptic genus.
[ { "created": "Wed, 29 May 2024 18:00:11 GMT", "version": "v1" }, { "created": "Mon, 10 Jun 2024 04:59:55 GMT", "version": "v2" } ]
2024-06-11
[ [ "Saxena", "Vivek", "" ] ]
Motivated by recent developments connecting non-supersymmetric heterotic string theory to the theory of Topological Modular Forms (TMF), we show that the worldsheet theory with central charge $(17,\frac{3}{2})$ obtained by fibering the $(E_8)_1 \times (E_8)_1$ current algebra over the $\mathcal{N}=(0,1)$ sigma model on $S^{1}$ with antiperiodic spin structure (such that the two $E_8$ factors are exchanged as we go around the circle), is continuously connected to the $(E_8)_2$ theory in the Gaiotto$-$Johnson-Freyd$-$Witten sense of going "up and down the RG trajectories". Combined with the work of Tachikawa and Yamashita, this furnishes a physical derivation of the fact that the $(E_8)_2$ theory corresponds to the unique nontrivial torsion element $[(E_8)_2]$ of $\mathsf{TMF}^{31}$ with zero mod-2 elliptic genus.
8.288768
7.908125
10.16634
8.296278
8.584642
8.851366
8.993304
8.680008
8.248244
9.496177
7.984619
8.083162
8.724109
8.230231
8.128477
8.42428
8.214973
8.403257
8.064429
8.73029
8.067863
1808.05648
Oren Bergman Prof.
Eran Avraham and Oren Bergman
A note on D0-branes and instantons in 5d supersymmetric gauge theories
30 pages, 6 figures. Typos corrected
null
10.1007/JHEP11(2018)183
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We refine a previous proposal for obtaining the multi-instanton partition function from the supersymmetric index of the 1d supersymmetric gauge theory on the worldline of D0-branes. We provide examples where the refinements are crucial for obtaining the correct result.
[ { "created": "Thu, 16 Aug 2018 19:11:14 GMT", "version": "v1" }, { "created": "Wed, 7 Nov 2018 15:38:10 GMT", "version": "v2" } ]
2018-12-26
[ [ "Avraham", "Eran", "" ], [ "Bergman", "Oren", "" ] ]
We refine a previous proposal for obtaining the multi-instanton partition function from the supersymmetric index of the 1d supersymmetric gauge theory on the worldline of D0-branes. We provide examples where the refinements are crucial for obtaining the correct result.
11.906713
9.579849
10.007198
8.539067
8.580131
8.677374
8.505138
8.431561
8.389929
11.049037
8.601147
9.365728
10.501195
9.360057
9.265167
9.696787
9.381231
9.79171
9.351623
9.960555
9.07148
1010.5240
Adam Brown
Adam R. Brown and Alex Dahlen
Bubbles of Nothing and the Fastest Decay in the Landscape
18 pages, 8 figures; v2: minor changes
Phys.Rev.D84:043518,2011
10.1103/PhysRevD.84.043518
PUPT-2357
hep-th gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The rate and manner of vacuum decay are calculated in an explicit flux compactification, including all thick-wall and gravitational effects. For landscapes built of many units of a single flux, the fastest decay is usually to discharge just one unit. By contrast, for landscapes built of a single unit each of many different fluxes, the fastest decay is usually to discharge all the flux at once, which destabilizes the radion and begets a bubble of nothing. By constructing the bubble of nothing as the limit in which ever more flux is removed, we gain new insight into the bubble's appearance. Finally, we describe a new instanton that mediates simultaneous flux tunneling and decompactification. Our model is the thin-brane approximation to six-dimensional Einstein-Maxwell theory.
[ { "created": "Mon, 25 Oct 2010 20:00:03 GMT", "version": "v1" }, { "created": "Fri, 23 Sep 2011 04:10:29 GMT", "version": "v2" } ]
2011-09-26
[ [ "Brown", "Adam R.", "" ], [ "Dahlen", "Alex", "" ] ]
The rate and manner of vacuum decay are calculated in an explicit flux compactification, including all thick-wall and gravitational effects. For landscapes built of many units of a single flux, the fastest decay is usually to discharge just one unit. By contrast, for landscapes built of a single unit each of many different fluxes, the fastest decay is usually to discharge all the flux at once, which destabilizes the radion and begets a bubble of nothing. By constructing the bubble of nothing as the limit in which ever more flux is removed, we gain new insight into the bubble's appearance. Finally, we describe a new instanton that mediates simultaneous flux tunneling and decompactification. Our model is the thin-brane approximation to six-dimensional Einstein-Maxwell theory.
15.490882
13.443381
16.434385
14.081545
15.413446
14.029284
14.800961
14.662339
14.438325
16.763107
13.937559
14.123237
15.115214
14.057544
14.508689
14.674863
14.666884
14.807494
14.330713
14.285106
13.881935
1905.01319
Dalimil Mazac
Thomas Hartman, Dalimil Maz\'a\v{c}, Leonardo Rastelli
Sphere Packing and Quantum Gravity
70 pages, 7 figures
null
10.1007/JHEP12(2019)048
null
hep-th math.MG math.NT
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We establish a precise relation between the modular bootstrap, used to constrain the spectrum of 2D CFTs, and the sphere packing problem in Euclidean geometry. The modular bootstrap bound for chiral algebra $U(1)^c$ maps exactly to the Cohn-Elkies linear programming bound on the sphere packing density in $d=2c$ dimensions. We also show that the analytic functionals developed earlier for the correlator conformal bootstrap can be adapted to this context. For $c=4$ and $c=12$, these functionals exactly reproduce the "magic functions" used recently by Viazovska [1] and Cohn et al. [2] to solve the sphere packing problem in dimensions 8 and 24. The same functionals are also applied to general 2D CFTs, with only Virasoro symmetry. In the limit of large central charge, we relate sphere packing to bounds on the black hole spectrum in 3D quantum gravity, and prove analytically that any such theory must have a nontrivial primary state of dimension $\Delta_0 \lesssim c/8.503$.
[ { "created": "Fri, 3 May 2019 18:00:09 GMT", "version": "v1" }, { "created": "Tue, 17 Sep 2019 00:01:47 GMT", "version": "v2" } ]
2020-01-29
[ [ "Hartman", "Thomas", "" ], [ "Mazáč", "Dalimil", "" ], [ "Rastelli", "Leonardo", "" ] ]
We establish a precise relation between the modular bootstrap, used to constrain the spectrum of 2D CFTs, and the sphere packing problem in Euclidean geometry. The modular bootstrap bound for chiral algebra $U(1)^c$ maps exactly to the Cohn-Elkies linear programming bound on the sphere packing density in $d=2c$ dimensions. We also show that the analytic functionals developed earlier for the correlator conformal bootstrap can be adapted to this context. For $c=4$ and $c=12$, these functionals exactly reproduce the "magic functions" used recently by Viazovska [1] and Cohn et al. [2] to solve the sphere packing problem in dimensions 8 and 24. The same functionals are also applied to general 2D CFTs, with only Virasoro symmetry. In the limit of large central charge, we relate sphere packing to bounds on the black hole spectrum in 3D quantum gravity, and prove analytically that any such theory must have a nontrivial primary state of dimension $\Delta_0 \lesssim c/8.503$.
6.902205
8.048751
8.575369
7.390335
7.598927
7.097306
7.080012
7.445454
7.354188
8.200035
7.333766
6.801238
6.873258
6.736413
6.733963
6.734365
6.560985
6.768919
6.669873
6.789848
6.620816
hep-th/0610024
Andrzej Wereszczynski
C. Adam, J. Sanchez-Guillen, A. Wereszczynski
New Integrable Sectors in Skyrme and 4-dimensional CP^n Model
23 pages
J.Phys.A40:1907,2007
10.1088/1751-8113/40/8/015
null
hep-th
null
The application of a weak integrability concept to the Skyrme and $CP^n$ models in 4 dimensions is investigated. A new integrable subsystem of the Skyrme model, allowing also for non-holomorphic solutions, is derived. This procedure can be applied to the massive Skyrme model, as well. Moreover, an example of a family of chiral Lagrangians providing exact, finite energy Skyrme-like solitons with arbitrary value of the topological charge, is given. In the case of $CP^n$ models a tower of integrable subsystems is obtained. In particular, in (2+1) dimensions a one-to-one correspondence between the standard integrable submodel and the BPS sector is proved. Additionally, it is shown that weak integrable submodels allow also for non-BPS solutions. Geometric as well as algebraic interpretations of the integrability conditions are also given.
[ { "created": "Mon, 2 Oct 2006 07:59:20 GMT", "version": "v1" } ]
2008-11-26
[ [ "Adam", "C.", "" ], [ "Sanchez-Guillen", "J.", "" ], [ "Wereszczynski", "A.", "" ] ]
The application of a weak integrability concept to the Skyrme and $CP^n$ models in 4 dimensions is investigated. A new integrable subsystem of the Skyrme model, allowing also for non-holomorphic solutions, is derived. This procedure can be applied to the massive Skyrme model, as well. Moreover, an example of a family of chiral Lagrangians providing exact, finite energy Skyrme-like solitons with arbitrary value of the topological charge, is given. In the case of $CP^n$ models a tower of integrable subsystems is obtained. In particular, in (2+1) dimensions a one-to-one correspondence between the standard integrable submodel and the BPS sector is proved. Additionally, it is shown that weak integrable submodels allow also for non-BPS solutions. Geometric as well as algebraic interpretations of the integrability conditions are also given.
8.249387
8.114022
8.260444
8.001746
8.159097
8.395264
8.025944
7.829456
7.685664
9.027472
7.651063
7.721468
7.96751
7.847449
7.780877
7.81205
7.922654
7.781675
7.946164
8.026706
7.760252
hep-th/0011163
Violeta Calian
V. Calian, G. Stoenescu
Renormalization of non-locally regularized BRST-anti-BRST theories
9 pages
null
null
null
hep-th
null
An extension of the non-local regularization scheme is formulated in the Sp(2) symmetric Lagrangian BRST quantization framework. It generates a systematic treatment of the anomalous quantum master equations and allows to substract the divergences as well as to calculate genuine higher loop BRST and anti-BRST anomalies.
[ { "created": "Fri, 17 Nov 2000 20:57:38 GMT", "version": "v1" } ]
2007-05-23
[ [ "Calian", "V.", "" ], [ "Stoenescu", "G.", "" ] ]
An extension of the non-local regularization scheme is formulated in the Sp(2) symmetric Lagrangian BRST quantization framework. It generates a systematic treatment of the anomalous quantum master equations and allows to substract the divergences as well as to calculate genuine higher loop BRST and anti-BRST anomalies.
16.68771
12.845678
17.14094
13.054629
13.090559
13.366379
13.607193
13.264805
12.335643
19.039679
12.160219
13.053693
15.578356
13.353518
13.038634
13.04797
12.844771
13.908981
13.321589
15.803177
13.334609
1704.08353
Vakhid Gani
Aliakbar Moradi Marjaneh, Vakhid A. Gani, Danial Saadatmand, Sergey V. Dmitriev, Kurosh Javidan
Multi-kink collisions in the $\phi^6$ model
21 pages, 8 figures; v2: minor changes to match version published in JHEP
JHEP 07 (2017) 028
10.1007/JHEP07(2017)028
null
hep-th cond-mat.mtrl-sci math-ph math.MP nlin.PS
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study simultaneous collisions of two, three, and four kinks and antikinks of the $\phi^6$ model at the same spatial point. Unlike the $\phi^4$ kinks, the $\phi^6$ kinks are asymmetric and this enriches the variety of the collision scenarios. In our numerical simulations we observe both reflection and bound state formation depending on the number of kinks and on their spatial ordering in the initial configuration. We also analyze the extreme values of the energy densities and the field gradient observed during the collisions. Our results suggest that very high energy densities can be produced in multi-kink collisions in a controllable manner. Appearance of high energy density spots in multi-kink collisions can be important in various physical applications of the Klein-Gordon model.
[ { "created": "Wed, 26 Apr 2017 21:18:58 GMT", "version": "v1" }, { "created": "Sat, 8 Jul 2017 11:16:41 GMT", "version": "v2" } ]
2017-07-11
[ [ "Marjaneh", "Aliakbar Moradi", "" ], [ "Gani", "Vakhid A.", "" ], [ "Saadatmand", "Danial", "" ], [ "Dmitriev", "Sergey V.", "" ], [ "Javidan", "Kurosh", "" ] ]
We study simultaneous collisions of two, three, and four kinks and antikinks of the $\phi^6$ model at the same spatial point. Unlike the $\phi^4$ kinks, the $\phi^6$ kinks are asymmetric and this enriches the variety of the collision scenarios. In our numerical simulations we observe both reflection and bound state formation depending on the number of kinks and on their spatial ordering in the initial configuration. We also analyze the extreme values of the energy densities and the field gradient observed during the collisions. Our results suggest that very high energy densities can be produced in multi-kink collisions in a controllable manner. Appearance of high energy density spots in multi-kink collisions can be important in various physical applications of the Klein-Gordon model.
7.309423
6.778626
7.590981
6.549627
7.133851
6.435392
6.822682
6.711423
6.804423
7.541056
6.857408
6.629306
7.03503
6.552367
6.839086
6.521711
6.508262
6.718882
6.787086
7.304394
6.713064
1902.03221
Sebastien Renaux-Petel
Jacopo Fumagalli, Sebastian Garcia-Saenz, Lucas Pinol, S\'ebastien Renaux-Petel and John Ronayne
Hyper non-Gaussianities in inflation with strongly non-geodesic motion
5 pages + appendices, 5 figures. Claim regarding the loss of perturbative control removed. New result of the enhancement of higher-order correlation functions in flattened configurations
Phys. Rev. Lett. 123, 201302 (2019)
10.1103/PhysRevLett.123.201302
null
hep-th astro-ph.CO gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Several recent proposals to embed inflation into high-energy physics rely on inflationary dynamics characterized by a strongly non-geodesic motion in negatively curved field space. This naturally leads to a transient instability of perturbations on sub-Hubble scales, and to their exponential amplification. Supported by first-principle numerical computations, and by the analytical insight provided by the effective field theory of inflation, we show that the bispectrum is enhanced in flattened configurations, and we argue that an analogous result holds for all higher-order correlation functions. These ``hyper non-Gaussianities'' thus provide powerful model-independent constraints on non-standard inflationary attractors motivated by the search for ultraviolet completions of inflation.
[ { "created": "Fri, 8 Feb 2019 18:30:24 GMT", "version": "v1" }, { "created": "Fri, 25 Oct 2019 20:01:26 GMT", "version": "v2" } ]
2019-11-20
[ [ "Fumagalli", "Jacopo", "" ], [ "Garcia-Saenz", "Sebastian", "" ], [ "Pinol", "Lucas", "" ], [ "Renaux-Petel", "Sébastien", "" ], [ "Ronayne", "John", "" ] ]
Several recent proposals to embed inflation into high-energy physics rely on inflationary dynamics characterized by a strongly non-geodesic motion in negatively curved field space. This naturally leads to a transient instability of perturbations on sub-Hubble scales, and to their exponential amplification. Supported by first-principle numerical computations, and by the analytical insight provided by the effective field theory of inflation, we show that the bispectrum is enhanced in flattened configurations, and we argue that an analogous result holds for all higher-order correlation functions. These ``hyper non-Gaussianities'' thus provide powerful model-independent constraints on non-standard inflationary attractors motivated by the search for ultraviolet completions of inflation.
13.132971
11.145932
12.14638
10.344532
11.756578
11.779859
11.67545
11.14425
11.156223
13.1579
11.829011
11.115729
10.867664
10.721434
11.014035
10.917362
11.339347
10.454543
10.788535
10.722816
10.923052
0903.4432
Sergio Caracciolo
Sergio Caracciolo, Andrea Sportiello
Spanning Forests on Random Planar Lattices
43 pages, Dedicated to Edouard Brezin and Giorgio Parisi, on the occasion of their special birthday
J.Statist.Phys.135:1063-1104,2009
10.1007/s10955-009-9733-1
null
hep-th cond-mat.stat-mech hep-lat math-ph math.CO math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The generating function for spanning forests on a lattice is related to the q-state Potts model in a certain q -> 0 limit, and extends the analogous notion for spanning trees, or dense self-avoiding branched polymers. Recent works have found a combinatorial perturbative equivalence also with the (quadratic action) O(n) model in the limit n -> -1, the expansion parameter t counting the number of components in the forest. We give a random-matrix formulation of this model on the ensemble of degree-k random planar lattices. For k = 3, a correspondence is found with the Kostov solution of the loop-gas problem, which arise as a reformulation of the (logarithmic action) O(n) model, at n = -2. Then, we show how to perform an expansion around the t = 0 theory. In the thermodynamic limit, at any order in t we have a finite sum of finite-dimensional Cauchy integrals. The leading contribution comes from a peculiar class of terms, for which a resummation can be performed exactly.
[ { "created": "Wed, 25 Mar 2009 19:17:07 GMT", "version": "v1" } ]
2009-09-01
[ [ "Caracciolo", "Sergio", "" ], [ "Sportiello", "Andrea", "" ] ]
The generating function for spanning forests on a lattice is related to the q-state Potts model in a certain q -> 0 limit, and extends the analogous notion for spanning trees, or dense self-avoiding branched polymers. Recent works have found a combinatorial perturbative equivalence also with the (quadratic action) O(n) model in the limit n -> -1, the expansion parameter t counting the number of components in the forest. We give a random-matrix formulation of this model on the ensemble of degree-k random planar lattices. For k = 3, a correspondence is found with the Kostov solution of the loop-gas problem, which arise as a reformulation of the (logarithmic action) O(n) model, at n = -2. Then, we show how to perform an expansion around the t = 0 theory. In the thermodynamic limit, at any order in t we have a finite sum of finite-dimensional Cauchy integrals. The leading contribution comes from a peculiar class of terms, for which a resummation can be performed exactly.
11.699944
12.986311
13.379198
11.630632
14.235528
13.177971
12.628476
11.756184
12.670502
14.93813
11.769294
11.680996
11.831276
11.23697
12.40287
11.965275
11.91888
11.259103
11.076864
11.711897
11.595016
1702.02069
Dafni Marchioro
M. Botta Cantcheff, Alexandre L. Gadelha, D\'afni F. Z. Marchioro, Daniel Luiz Nedel
Entanglement from Dissipation and Holographic Interpretation
Major changes. Last section removed from the old version. New section on the dual gravitational solution and the teleportation mechanism included. Figure added. References changed
Eur. Phys. J. C78 (2018) no.2, 105
10.1140/epjc/s10052-018-5545-2
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work we study a dissipative field theory where the dissipation process is manifestly related to dynamical entanglement and put it in the holographic context. Such endeavour is realized by further development of a canonical approach to study quantum dissipation, which consists of doubling the degrees of freedom of the original system by defining an auxiliary one. A time dependent entanglement entropy for the vacumm state is calculated and a geometrical interpretation of the auxiliary system and the entropy is given in the context of the AdS/CFT correspondence using the Ryu-Takayanagi formula. We show that the dissipative dynamics is controlled by the entanglement entropy and there are two distinct stages: in the early times the holographic interpretation requires some deviation from classical General Relativity; in the later times the quantum system is described as a wormhole, a solution of the Einstein's equations near to a maximally extended black hole with two asymptotically AdS boundaries. We focus our holographic analysis in this regime, and suggest a mechanism similar to teleportation protocol to exchange (quantum) information between the two CFTs on the boundaries (see [28]).
[ { "created": "Tue, 7 Feb 2017 15:46:07 GMT", "version": "v1" }, { "created": "Thu, 29 Jun 2017 18:46:34 GMT", "version": "v2" }, { "created": "Fri, 9 Feb 2018 18:54:51 GMT", "version": "v3" } ]
2018-02-12
[ [ "Cantcheff", "M. Botta", "" ], [ "Gadelha", "Alexandre L.", "" ], [ "Marchioro", "Dáfni F. Z.", "" ], [ "Nedel", "Daniel Luiz", "" ] ]
In this work we study a dissipative field theory where the dissipation process is manifestly related to dynamical entanglement and put it in the holographic context. Such endeavour is realized by further development of a canonical approach to study quantum dissipation, which consists of doubling the degrees of freedom of the original system by defining an auxiliary one. A time dependent entanglement entropy for the vacumm state is calculated and a geometrical interpretation of the auxiliary system and the entropy is given in the context of the AdS/CFT correspondence using the Ryu-Takayanagi formula. We show that the dissipative dynamics is controlled by the entanglement entropy and there are two distinct stages: in the early times the holographic interpretation requires some deviation from classical General Relativity; in the later times the quantum system is described as a wormhole, a solution of the Einstein's equations near to a maximally extended black hole with two asymptotically AdS boundaries. We focus our holographic analysis in this regime, and suggest a mechanism similar to teleportation protocol to exchange (quantum) information between the two CFTs on the boundaries (see [28]).
10.903053
11.489297
11.348648
10.816036
10.659726
10.166101
10.669676
11.269608
10.485352
11.816712
10.618793
10.225302
10.832462
10.60166
10.60662
10.487104
10.251913
10.598187
10.552891
10.901728
10.471002
1012.3561
Veronika E. Hubeny
Veronika E. Hubeny
Holographic dual of collimated radiation
26 pages, 6 figures, invited contribution to the New Journal of Physics Focus Issue "Strongly Correlated Quantum Fluids: From Ultracold Quantum Gases to QCD Plasmas"
New J.Phys.13:035006,2011
10.1088/1367-2630/13/3/035006
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a new and simple method of estimating the radiation due to an accelerated quark in a strongly coupled medium, within the framework of the AdS/CFT correspondence. In particular, we offer a heuristic explanation of the collimated nature of synchrotron radiation produced by a circling quark, which was recently studied in Phys.Rev.D81 (2010) 126001. The gravitational dual of such quark is a coiling string in AdS, whose backreaction on the spacetime geometry remains tightly confined, as if 'beamed' towards the boundary. While this appears to contradict conventional expectations from the scale/radius duality, we resolve the issue by observing that the backreaction of a relativistic string is reproduced by a superposition of gravitational shock waves. We further demonstrate that this proposal allows us to reduce the problem of computing the boundary stress tensor to merely calculating geodesics in AdS, as opposed to solving linearized Einstein's equations.
[ { "created": "Thu, 16 Dec 2010 11:16:42 GMT", "version": "v1" } ]
2011-03-28
[ [ "Hubeny", "Veronika E.", "" ] ]
We propose a new and simple method of estimating the radiation due to an accelerated quark in a strongly coupled medium, within the framework of the AdS/CFT correspondence. In particular, we offer a heuristic explanation of the collimated nature of synchrotron radiation produced by a circling quark, which was recently studied in Phys.Rev.D81 (2010) 126001. The gravitational dual of such quark is a coiling string in AdS, whose backreaction on the spacetime geometry remains tightly confined, as if 'beamed' towards the boundary. While this appears to contradict conventional expectations from the scale/radius duality, we resolve the issue by observing that the backreaction of a relativistic string is reproduced by a superposition of gravitational shock waves. We further demonstrate that this proposal allows us to reduce the problem of computing the boundary stress tensor to merely calculating geodesics in AdS, as opposed to solving linearized Einstein's equations.
10.543961
10.390326
10.998309
10.013976
11.346803
10.288964
10.681899
10.003992
10.2156
10.993467
9.826381
9.975213
10.305533
10.110525
10.13485
10.121193
10.535524
10.082993
10.220178
10.141939
10.07111
0901.3431
Ahmad Ghodsi
Mohsen Alishahiha and Ahmad Ghodsi
Non-relativistic D3-brane in the presence of higher derivative corrections
20 pages. v2: typos corrected, one reference added. v3: Minor corrections, To appear in PRD
Phys.Rev.D80:026004,2009
10.1103/PhysRevD.80.026004
IPM/P-2009/002
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Using alpha'^3 terms of type IIB supergravity action we study higher order corrections to the non-relativistic non-extremal D3-brane. Utilizing the corrected solution we evaluate corrections to temperature, entropy and shear viscosity. We also compute the eta/s ratio which although within the range of validity of the supergravity approximation and in the lowest order of the correction the universal bound is respected, there is a possibility for a violation of the bound when higher terms in the expansion are taken into account.
[ { "created": "Thu, 22 Jan 2009 08:40:12 GMT", "version": "v1" }, { "created": "Sun, 1 Feb 2009 08:47:54 GMT", "version": "v2" }, { "created": "Tue, 14 Jul 2009 15:02:32 GMT", "version": "v3" } ]
2009-08-12
[ [ "Alishahiha", "Mohsen", "" ], [ "Ghodsi", "Ahmad", "" ] ]
Using alpha'^3 terms of type IIB supergravity action we study higher order corrections to the non-relativistic non-extremal D3-brane. Utilizing the corrected solution we evaluate corrections to temperature, entropy and shear viscosity. We also compute the eta/s ratio which although within the range of validity of the supergravity approximation and in the lowest order of the correction the universal bound is respected, there is a possibility for a violation of the bound when higher terms in the expansion are taken into account.
12.388548
9.889639
12.068053
9.559455
11.388397
10.375051
10.518723
9.752557
9.283748
13.593241
9.010312
10.229239
11.621907
9.790683
10.390484
9.829045
10.607831
10.429134
9.851529
12.38201
10.060543
hep-th/0411162
Jurgen Baacke
Jurgen Baacke and Nina Kevlishvili
Self-consistent bounces in two dimensions
30 pages, 12 figures
Phys.Rev. D71 (2005) 025008
10.1103/PhysRevD.71.025008
DO-TH-04-11
hep-th gr-qc hep-ph
null
We compute bounce solutions describing false vacuum decay in a Phi**4 model in two dimensions in the Hartree approximation, thus going beyond the usual one-loop corrections to the decay rate. We use zero energy mode functions of the fluctuation operator for the numerical computation of the functional determinant and the Green's function. We thus avoid the necessity of discretizing the spectrum, as it is necessary when one uses numerical techniques based on eigenfunctions. Regularization is performed in analogy of standard perturbation theory; the renormalization of the Hartree approximation is based on the two-particle point-irreducible (2PPI) scheme. The iteration towards the self-consistent solution is found to converge for some range of the parameters. Within this range we find the corrections to the leading one-loop approximation to be relatively small, not exceeding one order of magnitude in the total transition rate.
[ { "created": "Thu, 18 Nov 2004 16:22:49 GMT", "version": "v1" }, { "created": "Fri, 19 Nov 2004 12:48:40 GMT", "version": "v2" } ]
2009-11-10
[ [ "Baacke", "Jurgen", "" ], [ "Kevlishvili", "Nina", "" ] ]
We compute bounce solutions describing false vacuum decay in a Phi**4 model in two dimensions in the Hartree approximation, thus going beyond the usual one-loop corrections to the decay rate. We use zero energy mode functions of the fluctuation operator for the numerical computation of the functional determinant and the Green's function. We thus avoid the necessity of discretizing the spectrum, as it is necessary when one uses numerical techniques based on eigenfunctions. Regularization is performed in analogy of standard perturbation theory; the renormalization of the Hartree approximation is based on the two-particle point-irreducible (2PPI) scheme. The iteration towards the self-consistent solution is found to converge for some range of the parameters. Within this range we find the corrections to the leading one-loop approximation to be relatively small, not exceeding one order of magnitude in the total transition rate.
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