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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0009016 | J. W. van Holten | A. Balakin, J.W. van Holten and R. Kerner | Motions and world-line deviations in Einstein-Maxwell theory | 23 pages, no figures | Class.Quant.Grav.17:5009-5024,2000 | 10.1088/0264-9381/17/24/306 | NIKHEF/00-023 | gr-qc | null | We examine the motion of charged particles in gravitational and
electro-magnetic background fields. We study in particular the deviation of
world lines, describing the relative acceleration between particles on
different space-time trajectories. Two special cases of background fields are
considered in detail: (a) pp-... | [
{
"created": "Wed, 6 Sep 2000 11:26:54 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Balakin",
"A.",
""
],
[
"van Holten",
"J. W.",
""
],
[
"Kerner",
"R.",
""
]
] | We examine the motion of charged particles in gravitational and electro-magnetic background fields. We study in particular the deviation of world lines, describing the relative acceleration between particles on different space-time trajectories. Two special cases of background fields are considered in detail: (a) pp-wa... |
2312.00121 | Vladimir Strokov | Vladimir Strokov and Emanuele Berti | Quasimonochromatic LISA Sources in the Frequency Domain | 14 pages, 9 figures; added references | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Among the binary sources of interest for LISA some are quasimonochromatic, in
the sense that the change in the gravitational wave frequency $\Delta f\lesssim
1\;\mbox{yr}^{-1}$ during the observation time. For these sources, we revisit
the stationary phase approximation (SPA) commonly used in Fisher matrix
calculatio... | [
{
"created": "Thu, 30 Nov 2023 19:00:01 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Dec 2023 20:07:25 GMT",
"version": "v2"
}
] | 2023-12-27 | [
[
"Strokov",
"Vladimir",
""
],
[
"Berti",
"Emanuele",
""
]
] | Among the binary sources of interest for LISA some are quasimonochromatic, in the sense that the change in the gravitational wave frequency $\Delta f\lesssim 1\;\mbox{yr}^{-1}$ during the observation time. For these sources, we revisit the stationary phase approximation (SPA) commonly used in Fisher matrix calculations... |
2201.04071 | Dr. Sudhaker Upadhyay | J. Sadeghi, B. Pourhassan, S. Noori Gashti and S. Upadhyay | Weak Gravity Conjecture, Black Branes and Violations of Universal
Thermodynamic Relation | 14 pages; 2 captioned figures | Annals of Physics 447 (2022) 169168 | 10.1016/j.aop.2022.169168 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The universal thermodynamic relations between corrections to entropy and
extremality for various black holes solutions have been studied. In this
regard, we hereby consider a number of different black brane solutions in
different structures for perturbative corrections to general relativity. These
are, namely, black ... | [
{
"created": "Mon, 10 Jan 2022 16:18:34 GMT",
"version": "v1"
}
] | 2022-11-22 | [
[
"Sadeghi",
"J.",
""
],
[
"Pourhassan",
"B.",
""
],
[
"Gashti",
"S. Noori",
""
],
[
"Upadhyay",
"S.",
""
]
] | The universal thermodynamic relations between corrections to entropy and extremality for various black holes solutions have been studied. In this regard, we hereby consider a number of different black brane solutions in different structures for perturbative corrections to general relativity. These are, namely, black br... |
gr-qc/9401012 | null | J.H. Yoon | A Proposal of Positive-Definite Local Gravitational Energy Density in
General Relativity | 39p, SNUTP 93-78, RevTex 3.0 | null | null | null | gr-qc | null | We propose a 4-dimensional Kaluza-Klein approach to general relativity in the
(2,2)-splitting of space-time using the double null gauge. The associated
Lagrangian is equivalent to the Einstein-Hilbert Lagrangian, since it yields
the same field equations as the E-H Lagrangian does. It is describable as a
(1+1)-dimensi... | [
{
"created": "Fri, 15 Jan 1993 13:49:52 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Yoon",
"J. H.",
""
]
] | We propose a 4-dimensional Kaluza-Klein approach to general relativity in the (2,2)-splitting of space-time using the double null gauge. The associated Lagrangian is equivalent to the Einstein-Hilbert Lagrangian, since it yields the same field equations as the E-H Lagrangian does. It is describable as a (1+1)-dimension... |
gr-qc/9511066 | Pablo Labraga Lopez | A. Feinstein, J. Ib\'a\~nez and P. Labraga (Dpto. F\'isica Te\'orica,
Universidad del Pa\'is Vasco, Bilbao, Spain) | Scalar Field Inhomogeneous Cosmologies | 21 pages LaTeX, 3 figures appended as a uuencoded compressed tar file | J.Math.Phys. 36 (1995) 4962-4974 | 10.1063/1.530931 | null | gr-qc | null | Some exact solutions for the Einstein field equations corresponding to
inhomogeneous $G_2$ cosmologies with an exponential-potential scalar field
which generalize solutions obtained previously are considered. Several
particular cases are studied and the properties related to generalized
inflation and asymptotic behav... | [
{
"created": "Fri, 24 Nov 1995 11:16:11 GMT",
"version": "v1"
}
] | 2016-08-15 | [
[
"Feinstein",
"A.",
"",
"Dpto. Física Teórica,\n Universidad del País Vasco, Bilbao, Spain"
],
[
"Ibáñez",
"J.",
"",
"Dpto. Física Teórica,\n Universidad del País Vasco, Bilbao, Spain"
],
[
"Labraga",
"P.",
"",
"Dpto. Física Teórica,\n Universidad del País... | Some exact solutions for the Einstein field equations corresponding to inhomogeneous $G_2$ cosmologies with an exponential-potential scalar field which generalize solutions obtained previously are considered. Several particular cases are studied and the properties related to generalized inflation and asymptotic behavio... |
2201.05908 | Pierre-Henri Chavanis | Pierre-Henri Chavanis | A new logotropic model based on a complex scalar field with a
logarithmic potential | null | null | 10.1103/PhysRevD.106.063525 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a new logotropic model based on a complex scalar field with a
logarithmic potential that unifies dark matter and dark energy. The scalar
field satisfies a nonlinear wave equation generalizing the Klein-Gordon
equation in the relativistic regime and the Schr\"odinger equation in the
nonrelativistic regime... | [
{
"created": "Sat, 15 Jan 2022 18:45:24 GMT",
"version": "v1"
}
] | 2022-10-05 | [
[
"Chavanis",
"Pierre-Henri",
""
]
] | We introduce a new logotropic model based on a complex scalar field with a logarithmic potential that unifies dark matter and dark energy. The scalar field satisfies a nonlinear wave equation generalizing the Klein-Gordon equation in the relativistic regime and the Schr\"odinger equation in the nonrelativistic regime. ... |
1601.00947 | Agnes Fienga Dr. | A. Fienga, J. Laskar, H. Manche, M. Gastineau | Tests of GR with INPOP15a planetary ephemerides: estimations of possible
supplementary advances of perihelia for Mercury and Saturn | Proceedings of the 14th Marcel Grossmann meeting | null | null | null | gr-qc astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Planetary ephemerides are a good tool for studying general relativity at the
scale of our solar system. We present here new evaluations of advances of
perihelia for Mercury and Saturn.
| [
{
"created": "Tue, 5 Jan 2016 19:56:09 GMT",
"version": "v1"
}
] | 2016-01-06 | [
[
"Fienga",
"A.",
""
],
[
"Laskar",
"J.",
""
],
[
"Manche",
"H.",
""
],
[
"Gastineau",
"M.",
""
]
] | Planetary ephemerides are a good tool for studying general relativity at the scale of our solar system. We present here new evaluations of advances of perihelia for Mercury and Saturn. |
gr-qc/9812016 | Jean-Pierre De Villiers | Jean-Pierre De Villiers and Valeri Frolov | Gravitational Scattering of Cosmic Strings by Non-Rotating Black Holes | 31 pages, 11 figures. Paper revised with referee comments. To appear
in Classical and Quantum Gravity | Class.Quant.Grav. 16 (1999) 2403-2425 | 10.1088/0264-9381/16/7/317 | Alberta Thy 08-98 | gr-qc | null | This paper discusses the gravitational scattering of a straight, infinitely
long test cosmic string by a black hole. We present numerical results that
probe the two-dimensional parameter space of impact parameter and initial
velocity and compare them to approximate perturbative solutions derived
previously. We analyz... | [
{
"created": "Fri, 4 Dec 1998 18:06:04 GMT",
"version": "v1"
},
{
"created": "Sat, 12 Dec 1998 21:35:52 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Apr 1999 14:27:10 GMT",
"version": "v3"
},
{
"created": "Wed, 28 Apr 1999 16:55:38 GMT",
"version": "v4"
}
] | 2009-10-31 | [
[
"De Villiers",
"Jean-Pierre",
""
],
[
"Frolov",
"Valeri",
""
]
] | This paper discusses the gravitational scattering of a straight, infinitely long test cosmic string by a black hole. We present numerical results that probe the two-dimensional parameter space of impact parameter and initial velocity and compare them to approximate perturbative solutions derived previously. We analyze ... |
1407.7791 | Sunil Kumar Tripathy Mr. | S. K. Tripathy | Late time Acceleration and Role of Skewness in Anisotropic models | 15 pages, 4 figures, Astrophysics Space Science, 2014 | Astrophys. Space Sci.(2014)350:367-374 | 10.1007/s10509-013-1727-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study cosmological models with anisotropy in expansion rates in the
context of the recent observations predicting an accelerating universe. In the
absence of any anisotropy in the cosmic fluid, it is shown that the role of
skewness in directional Hubble rates is crucial in deciding the behavior of the
model. We fi... | [
{
"created": "Sat, 26 Jul 2014 18:05:49 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Tripathy",
"S. K.",
""
]
] | We study cosmological models with anisotropy in expansion rates in the context of the recent observations predicting an accelerating universe. In the absence of any anisotropy in the cosmic fluid, it is shown that the role of skewness in directional Hubble rates is crucial in deciding the behavior of the model. We find... |
1602.07546 | Sumanta Chakraborty | Krishnamohan Parattu, Sumanta Chakraborty and T. Padmanabhan | Variational Principle for Gravity with Null and Non-null boundaries: A
Unified Boundary Counter-term | 6 pages, no figures, accepted in Eur. Phys. J. C | Eur. Phys. J. C 76, 129 (2016) | 10.1140/epjc/s10052-016-3979-y | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is common knowledge that the Einstein-Hilbert action does not furnish a
well-posed variational principle. The usual solution to this problem is to add
an extra boundary term to the action, called a counter-term, so that the
variational principle becomes well-posed. When the boundary is spacelike or
timelike, the G... | [
{
"created": "Tue, 23 Feb 2016 06:53:41 GMT",
"version": "v1"
}
] | 2016-07-15 | [
[
"Parattu",
"Krishnamohan",
""
],
[
"Chakraborty",
"Sumanta",
""
],
[
"Padmanabhan",
"T.",
""
]
] | It is common knowledge that the Einstein-Hilbert action does not furnish a well-posed variational principle. The usual solution to this problem is to add an extra boundary term to the action, called a counter-term, so that the variational principle becomes well-posed. When the boundary is spacelike or timelike, the Gib... |
1809.07202 | Sabrina D'Antonio | S. D'Antonio, C. Palomba, S. Frasca, G. Intini, I. La Rosa, P. Leaci,
S. Mastrogiovanni, A. Miller, F. Muciaccia, O. J. Piccinni, A. Singhal | A semi-coherent analysis method to search for continuous gravitational
waves emitted by ultra-light boson clouds around spinning black holes | 13 pages, 13 figures | null | 10.1103/PhysRevD.98.103017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As a consequence of superradiant instability induced in Kerr black holes,
ultra-light boson clouds can be a source of persistent gravitational waves,
potentially detectable by current and future gravitational-wave detectors.
These signals have been predicted to be nearly monochromatic, with a small
steady frequency i... | [
{
"created": "Wed, 19 Sep 2018 14:09:32 GMT",
"version": "v1"
}
] | 2018-12-05 | [
[
"D'Antonio",
"S.",
""
],
[
"Palomba",
"C.",
""
],
[
"Frasca",
"S.",
""
],
[
"Intini",
"G.",
""
],
[
"La Rosa",
"I.",
""
],
[
"Leaci",
"P.",
""
],
[
"Mastrogiovanni",
"S.",
""
],
[
"Miller",
"A."... | As a consequence of superradiant instability induced in Kerr black holes, ultra-light boson clouds can be a source of persistent gravitational waves, potentially detectable by current and future gravitational-wave detectors. These signals have been predicted to be nearly monochromatic, with a small steady frequency inc... |
2301.03590 | Kimet Jusufi | Kimet Jusufi | Avoidance of singularity during the gravitational collapse with string
T-duality effects | 9 pages, no figures. Published in Universe
https://www.mdpi.com/2218-1997/9/1/41 | Universe 2023, 9(1), 41 | 10.3390/universe9010041 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we explore the gravitational collapse of matter (dust) under
the effect of zero-point length $l_0$. During the gravitational collapse, we
have neglected the backreaction effect of the pre-Hawking radiation (in the
sense that it is small effect and cannot prevent the formation of apparent
horizon), then... | [
{
"created": "Mon, 9 Jan 2023 09:59:50 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jan 2023 09:48:13 GMT",
"version": "v2"
}
] | 2023-01-20 | [
[
"Jusufi",
"Kimet",
""
]
] | In this paper, we explore the gravitational collapse of matter (dust) under the effect of zero-point length $l_0$. During the gravitational collapse, we have neglected the backreaction effect of the pre-Hawking radiation (in the sense that it is small effect and cannot prevent the formation of apparent horizon), then w... |
2105.05325 | Alice Boldrin | Alice Boldrin, Przemys{\l}aw Ma{\l}kiewicz | Dirac procedure and the Hamiltonian formalism for cosmological
perturbations in a Bianchi I universe | Added references, corrected typos, clarified notation, improved
discussions. Results unchanged | 2022 Class. Quantum Grav. 39 025005 | 10.1088/1361-6382/ac3bda | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We apply the Dirac procedure for constrained systems to the
Arnowitt-Deser-Misner formalism linearized around the Bianchi I universe. We
discuss and employ basic concepts such as Dirac observables, Dirac brackets,
gauge-fixing conditions, reduced phase space, physical Hamiltonian, canonical
isomorphism between differ... | [
{
"created": "Tue, 11 May 2021 19:55:24 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Oct 2021 14:36:03 GMT",
"version": "v2"
},
{
"created": "Tue, 14 Dec 2021 12:15:12 GMT",
"version": "v3"
}
] | 2021-12-15 | [
[
"Boldrin",
"Alice",
""
],
[
"Małkiewicz",
"Przemysław",
""
]
] | We apply the Dirac procedure for constrained systems to the Arnowitt-Deser-Misner formalism linearized around the Bianchi I universe. We discuss and employ basic concepts such as Dirac observables, Dirac brackets, gauge-fixing conditions, reduced phase space, physical Hamiltonian, canonical isomorphism between differen... |
0911.3967 | Patrick Das Gupta | Patrick Das Gupta | On Chern-Simons corrections to magnetohydrodynamics equations | 11 pages, to appear in Plasma Science and Technology (2010) | null | 10.1080/10420150903500571 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effect of a (3+1)-dimensional Chern-Simons electrodynamics on
the equations governing the dynamics of magnetized plasma and fields. In this
model, the Chern-Simons (CS) part consists of a dynamical pseudo-scalar field
whose space-time derivatives couple with the electromagnetic field. We explore
the CS c... | [
{
"created": "Fri, 20 Nov 2009 05:13:11 GMT",
"version": "v1"
}
] | 2016-06-29 | [
[
"Gupta",
"Patrick Das",
""
]
] | We study the effect of a (3+1)-dimensional Chern-Simons electrodynamics on the equations governing the dynamics of magnetized plasma and fields. In this model, the Chern-Simons (CS) part consists of a dynamical pseudo-scalar field whose space-time derivatives couple with the electromagnetic field. We explore the CS cor... |
2306.17471 | Sven Zschocke | Sven Zschocke | Total light deflection in the gravitational field of an axisymmetric
body at rest with full mass and spin multipole structure | 56 pages, 1 figure, 3 tables | Physical Review D 107 (2023) 124055 | 10.1103/PhysRevD.107.124055 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The tangent vector of the light trajectory at future infinity and the angle
of total light deflection in the gravitational field of an isolated
axisymmetric body at rest with full set of mass-multipoles and spin-multipoles
is determined in harmonic coordinates in the 1PN and 1.5PN approximation of the
post-Newtonian ... | [
{
"created": "Fri, 30 Jun 2023 08:37:01 GMT",
"version": "v1"
}
] | 2023-07-12 | [
[
"Zschocke",
"Sven",
""
]
] | The tangent vector of the light trajectory at future infinity and the angle of total light deflection in the gravitational field of an isolated axisymmetric body at rest with full set of mass-multipoles and spin-multipoles is determined in harmonic coordinates in the 1PN and 1.5PN approximation of the post-Newtonian (P... |
1808.05286 | Evan McDonough | Stephon Alexander, Evan McDonough, Robert Sims and Nicolas Yunes | Hidden-Sector Modifications to Gravitational Waves From Binary Inspirals | 18 pages, 6 figures, submitted to CQG. v2: matches published version | Class. Quant. Grav. 35, no. 23, 235012 (2018) | 10.1088/1361-6382/aaeb5c | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave astronomy has placed strong constraints on fundamental
physics, and there is every expectation that future observations will continue
to do so. In this work we quantify this expectation for future binary merger
observations to constrain hidden sectors, such as scalar-tensor gravity or dark
matter, ... | [
{
"created": "Wed, 15 Aug 2018 21:23:30 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Nov 2018 15:16:47 GMT",
"version": "v2"
}
] | 2018-11-13 | [
[
"Alexander",
"Stephon",
""
],
[
"McDonough",
"Evan",
""
],
[
"Sims",
"Robert",
""
],
[
"Yunes",
"Nicolas",
""
]
] | Gravitational wave astronomy has placed strong constraints on fundamental physics, and there is every expectation that future observations will continue to do so. In this work we quantify this expectation for future binary merger observations to constrain hidden sectors, such as scalar-tensor gravity or dark matter, wh... |
2306.15050 | Kuantay Boshkayev | Yergali Kurmanov, Marco Muccino, Kuantay Boshkayev, Talgar Konysbayev,
Orlando Luongo, Hernando Quevedo, Ainur Urazalina | Accretion disk in the Hartle-Thorne spacetime | 15 pages, 11 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider the circular motion of test particles in the gravitational field
of a rotating deformed object described by the Hartle-Thorne metric. This
metric represents an approximate solution to the vacuum Einstein field
equations, accurate to second order in the angular momentum $J$ and to first
order in the mass q... | [
{
"created": "Mon, 26 Jun 2023 20:14:05 GMT",
"version": "v1"
}
] | 2023-06-28 | [
[
"Kurmanov",
"Yergali",
""
],
[
"Muccino",
"Marco",
""
],
[
"Boshkayev",
"Kuantay",
""
],
[
"Konysbayev",
"Talgar",
""
],
[
"Luongo",
"Orlando",
""
],
[
"Quevedo",
"Hernando",
""
],
[
"Urazalina",
"Ainur",
"... | We consider the circular motion of test particles in the gravitational field of a rotating deformed object described by the Hartle-Thorne metric. This metric represents an approximate solution to the vacuum Einstein field equations, accurate to second order in the angular momentum $J$ and to first order in the mass qua... |
gr-qc/9409038 | Ocariz Jose Humberto | J. Ocariz, H. Rago | The Gravitational and Electrostatic Fields Far from an Isolated
Einstein-Maxwell Source | 11 pages, revTeX | Gen.Rel.Grav. 26, 1249 (1994) | 10.1007/BF02106716 | ULA-TH-940901 | gr-qc | null | The exterior solution for an arbitrary charged, massive source, is studied as
a static deviation from the Reissner-Nordstr\o m metric. This is reduced to two
coupled ordinary differential equations for the gravitational and electrostatic
potential functions. The homogeneous equations are explicitly solved in the
part... | [
{
"created": "Sun, 18 Sep 1994 15:46:42 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Mar 2000 08:42:21 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Ocariz",
"J.",
""
],
[
"Rago",
"H.",
""
]
] | The exterior solution for an arbitrary charged, massive source, is studied as a static deviation from the Reissner-Nordstr\o m metric. This is reduced to two coupled ordinary differential equations for the gravitational and electrostatic potential functions. The homogeneous equations are explicitly solved in the partic... |
1311.4436 | Xiaolin Yang | Xiao-lin Yang and Jian-cheng Wang | ynogkm: A New Public Code For Calculating time-like Geodesics In The
Kerr-Newmann Spacetime | 14 pages,12 figures, 7 tables, and a public code ynogkm is presented.
Accepted for publication by A&A. comments are welcome | null | 10.1051/0004-6361/201322565 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we present a new public code, named $ynogkm$, for the fast
calculation of time-like geodesics in the Kerr-Newmann (K-N) spacetime, which
is a direct extension of $ynogk$ calculating null geodesics in a Kerr
spacetime. Following the strategies used in $ynogk$, we also solve the
equations of motion analyt... | [
{
"created": "Mon, 18 Nov 2013 16:15:40 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Yang",
"Xiao-lin",
""
],
[
"Wang",
"Jian-cheng",
""
]
] | In this paper we present a new public code, named $ynogkm$, for the fast calculation of time-like geodesics in the Kerr-Newmann (K-N) spacetime, which is a direct extension of $ynogk$ calculating null geodesics in a Kerr spacetime. Following the strategies used in $ynogk$, we also solve the equations of motion analytic... |
gr-qc/0701120 | Mario Novello | M. Novello | A Spinor Theory of Gravity and the Cosmological Framework | null | JCAP 0706:018,2007 | 10.1088/1475-7516/2007/06/018 | null | gr-qc astro-ph | null | Recently we have presented a new formulation of the theory of gravity based
on an implementation of the Einstein Equivalence Principle distinct from
General Relativity. The kinetic part of the theory - that describes how matter
is affected by the modified geometry due to the gravitational field - is the
same as in Ge... | [
{
"created": "Mon, 22 Jan 2007 12:10:22 GMT",
"version": "v1"
}
] | 2010-10-27 | [
[
"Novello",
"M.",
""
]
] | Recently we have presented a new formulation of the theory of gravity based on an implementation of the Einstein Equivalence Principle distinct from General Relativity. The kinetic part of the theory - that describes how matter is affected by the modified geometry due to the gravitational field - is the same as in Gene... |
0810.5541 | Nicolas Yunes | Nicolas Yunes and David N. Spergel | Double Binary Pulsar Test of Dynamical Chern-Simons Modified Gravity | Rewritten and extended for Phys. Rev. D. Replaced with accepted
version | Phys.Rev.D80:042004,2009 | 10.1103/PhysRevD.80.042004 | null | gr-qc astro-ph hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Chern-Simons modified gravity is a string-theory and loop-quantum-gravity
inspired effective theory that modifies General Relativity by adding a
parity-violating Pontryagin density to the Einstein-Hilbert action multiplied
by a coupling scalar. We strongly constrain non-dynamical Chern-Simons modified
gravity with a ... | [
{
"created": "Thu, 30 Oct 2008 19:08:19 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Aug 2009 18:35:15 GMT",
"version": "v2"
}
] | 2010-04-15 | [
[
"Yunes",
"Nicolas",
""
],
[
"Spergel",
"David N.",
""
]
] | Chern-Simons modified gravity is a string-theory and loop-quantum-gravity inspired effective theory that modifies General Relativity by adding a parity-violating Pontryagin density to the Einstein-Hilbert action multiplied by a coupling scalar. We strongly constrain non-dynamical Chern-Simons modified gravity with a ti... |
1302.2938 | Lorenzo Fatibene | L. Fatibene, M. Francaviglia | Mathematical Equivalence vs. Physical Equivalence between Extended
Theories of Gravitations | 13 pages, 4 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We shall show that although Palatini f(R)-theories are equivalent to
Brans-Dicke theories, still the first pass the Mercury precession of perihelia
test, while the second do not. We argue that the two models are not physically
equivalent due to a different assumptions about free fall. We shall also go
through perihel... | [
{
"created": "Tue, 12 Feb 2013 22:19:20 GMT",
"version": "v1"
}
] | 2013-02-14 | [
[
"Fatibene",
"L.",
""
],
[
"Francaviglia",
"M.",
""
]
] | We shall show that although Palatini f(R)-theories are equivalent to Brans-Dicke theories, still the first pass the Mercury precession of perihelia test, while the second do not. We argue that the two models are not physically equivalent due to a different assumptions about free fall. We shall also go through perihelia... |
1702.06337 | Branislav Nikolic | Branislav Nikolic | Treating the Einstein-Hilbert action as a higher derivative Lagrangian:
revealing the missing information about conformal non-invariance | 8 pages, Contribution to the DICE2016 Proceedings | null | 10.1088/1742-6596/880/1/012027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hamiltonian formulation of conformally invariant Weyl-squared higher
derivative theory teaches us that conformal symmetry is expressed through
particular first class constraints related to the absence of the three-metric
determinant and the trace of the extrinsic curvature from the theory. Any term
depending on t... | [
{
"created": "Tue, 21 Feb 2017 11:35:40 GMT",
"version": "v1"
}
] | 2017-09-13 | [
[
"Nikolic",
"Branislav",
""
]
] | The Hamiltonian formulation of conformally invariant Weyl-squared higher derivative theory teaches us that conformal symmetry is expressed through particular first class constraints related to the absence of the three-metric determinant and the trace of the extrinsic curvature from the theory. Any term depending on the... |
0804.4722 | Vladimir Dzhunushaliev | Vladimir Dzhunushaliev | Yamabe flow, conformal gravity and spacetime foam | acknowledgment is added | null | null | null | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that 3D part of a spherically symmetric solution in conformal
Weyl gravity interacting with Maxwell electrodynamics is a Yamabe flow as well.
The Yamabe flow describes the transition from a horn of an initial wormhole to
a 3D Euclidean space both filled with a radial electric field. It is supposed
that su... | [
{
"created": "Wed, 30 Apr 2008 02:23:22 GMT",
"version": "v1"
},
{
"created": "Wed, 7 May 2008 08:00:49 GMT",
"version": "v2"
},
{
"created": "Tue, 27 May 2008 10:56:15 GMT",
"version": "v3"
},
{
"created": "Tue, 30 Sep 2008 03:18:15 GMT",
"version": "v4"
},
{
"cr... | 2008-10-23 | [
[
"Dzhunushaliev",
"Vladimir",
""
]
] | It is shown that 3D part of a spherically symmetric solution in conformal Weyl gravity interacting with Maxwell electrodynamics is a Yamabe flow as well. The Yamabe flow describes the transition from a horn of an initial wormhole to a 3D Euclidean space both filled with a radial electric field. It is supposed that such... |
2111.13315 | Joshua Foo | Joshua Foo, Cemile Senem Arabaci, Magdalena Zych, Robert B. Mann | Quantum signatures of black hole mass superpositions | Close to published version. Supplemental materials found on
publisher's website | Phys. Rev. Lett. 129, 181301 (2022) | 10.1103/PhysRevLett.129.181301 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | We present a new operational framework for studying ``superpositions of
spacetimes'', which are of fundamental interest in the development of a theory
of quantum gravity. Our approach capitalizes on nonlocal correlations in curved
spacetime quantum field theory, allowing us to formulate a metric for spacetime
superpo... | [
{
"created": "Fri, 26 Nov 2021 05:20:25 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Nov 2022 03:27:14 GMT",
"version": "v2"
}
] | 2022-11-02 | [
[
"Foo",
"Joshua",
""
],
[
"Arabaci",
"Cemile Senem",
""
],
[
"Zych",
"Magdalena",
""
],
[
"Mann",
"Robert B.",
""
]
] | We present a new operational framework for studying ``superpositions of spacetimes'', which are of fundamental interest in the development of a theory of quantum gravity. Our approach capitalizes on nonlocal correlations in curved spacetime quantum field theory, allowing us to formulate a metric for spacetime superposi... |
2307.01796 | Roberto Giamb\`o | Roberto Giamb\`o | Gravitational collapse of a spherical scalar field | Invited chapter for the edited book New Frontiers in Gravitational
Collapse and Spacetime Singularities (Eds. P. Joshi and D. Malafarina,
Springer Singapore, expected in 2023) | null | 10.1007/978-981-97-1172-7_6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Examining the relativistic collapse of a spherical spacetime where gravity is
coupled with a scalar field, this review provides a thorough analysis of some
of the most relevant studies from both analytical and numerical perspectives.
The discussion includes achievements made in this field, with a focus on those
relat... | [
{
"created": "Tue, 4 Jul 2023 16:04:28 GMT",
"version": "v1"
}
] | 2024-05-09 | [
[
"Giambò",
"Roberto",
""
]
] | Examining the relativistic collapse of a spherical spacetime where gravity is coupled with a scalar field, this review provides a thorough analysis of some of the most relevant studies from both analytical and numerical perspectives. The discussion includes achievements made in this field, with a focus on those related... |
1710.08413 | Ratbay Myrzakulov | Shynaray Myrzakul, Kairat Myrzakulov, Sabit Bekov, Tolkynay Myrzakul
and Ratbay Myrzakulov | Starobinsky model with f-essence | 6 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we consider a cosmological model of the flat and homogeneous
universe for the Starobinsky model $F(R)=\alpha R + \beta R^{2}$, which is
non-minimally coupled with f-essence. For this model we obtained the field
equations and considered particular solutions of the coupling and fermionic
field functions.... | [
{
"created": "Mon, 23 Oct 2017 17:26:05 GMT",
"version": "v1"
}
] | 2017-10-25 | [
[
"Myrzakul",
"Shynaray",
""
],
[
"Myrzakulov",
"Kairat",
""
],
[
"Bekov",
"Sabit",
""
],
[
"Myrzakul",
"Tolkynay",
""
],
[
"Myrzakulov",
"Ratbay",
""
]
] | In this paper, we consider a cosmological model of the flat and homogeneous universe for the Starobinsky model $F(R)=\alpha R + \beta R^{2}$, which is non-minimally coupled with f-essence. For this model we obtained the field equations and considered particular solutions of the coupling and fermionic field functions. I... |
1710.01371 | Merced Montesinos | Bogar Diaz, Merced Montesinos | Geometric Lagrangian approach to the physical degree of freedom count in
field theory | It matches published version | J.Math.Phys.59:052901,2018 | 10.1063/1.5008740 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To circumvent some technical difficulties faced by the geometric Lagrangian
approach to the physical degree of freedom count presented in the work of Diaz,
Higuita, and Montesinos, J. Math. Phys. 55, 122901 (2014) that prevent its
direct implementation to field theory, in this paper, we slightly modify the
geometric ... | [
{
"created": "Tue, 3 Oct 2017 20:13:15 GMT",
"version": "v1"
},
{
"created": "Thu, 17 May 2018 18:41:32 GMT",
"version": "v2"
}
] | 2018-05-21 | [
[
"Diaz",
"Bogar",
""
],
[
"Montesinos",
"Merced",
""
]
] | To circumvent some technical difficulties faced by the geometric Lagrangian approach to the physical degree of freedom count presented in the work of Diaz, Higuita, and Montesinos, J. Math. Phys. 55, 122901 (2014) that prevent its direct implementation to field theory, in this paper, we slightly modify the geometric La... |
gr-qc/9802067 | A. Mikovic | J. Cruz, A. Mikovic and J. Navarro-Salas | Free Field Realization of Cylindrically Symmetric Einstein Gravity | 8 pages, no figures, discussions on the dual metric and on the
free-field expansion are added | Phys.Lett.B437:273-278,1998 | 10.1016/S0370-2693(98)00904-6 | FTUV/98-21, IFIC/98-21 | gr-qc hep-th | null | Cylindrically reduced Einstein gravity can be regarded as an $SL(2,R)/SO(2)$
sigma model coupled to 2D dilaton gravity. By using the corresponding 2D
diffeomorphism algebra of constraints and the asymptotic behaviour of the Ernst
equation we show that the theory can be mapped by a canonical transformation
into a set ... | [
{
"created": "Fri, 27 Feb 1998 13:50:33 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Mar 1998 12:08:29 GMT",
"version": "v2"
},
{
"created": "Fri, 29 May 1998 10:43:17 GMT",
"version": "v3"
}
] | 2009-01-16 | [
[
"Cruz",
"J.",
""
],
[
"Mikovic",
"A.",
""
],
[
"Navarro-Salas",
"J.",
""
]
] | Cylindrically reduced Einstein gravity can be regarded as an $SL(2,R)/SO(2)$ sigma model coupled to 2D dilaton gravity. By using the corresponding 2D diffeomorphism algebra of constraints and the asymptotic behaviour of the Ernst equation we show that the theory can be mapped by a canonical transformation into a set of... |
gr-qc/9606025 | Robert Mann | R.B. Mann and G. Papadopoulos | Killing spinors, the adS black hole and I(ISO(2,1)) gravity | 12 pages, uses phyzzx | Phys.Rev.D55:2119-2123,1997 | 10.1103/PhysRevD.55.2119 | DAMTP-96-29 | gr-qc | null | We construct a supersymmetric extension of the $I\big(ISO(2,1)\big)$
Chern-Simons gravity and show that certain particle-like solutions and the adS
black-hole solution of this theory are supersymmetric.
| [
{
"created": "Wed, 12 Jun 1996 21:14:15 GMT",
"version": "v1"
}
] | 2009-06-09 | [
[
"Mann",
"R. B.",
""
],
[
"Papadopoulos",
"G.",
""
]
] | We construct a supersymmetric extension of the $I\big(ISO(2,1)\big)$ Chern-Simons gravity and show that certain particle-like solutions and the adS black-hole solution of this theory are supersymmetric. |
gr-qc/9911076 | Martin Rainer | Martin Rainer | Algebraic Quantum Theory on Manifolds: A Haag-Kastler Setting for
Quantum Geometry | 15 pages, Latex; v2: several corrections, in particular in def. 1 and
in sec. 6 | Class.Quant.Grav. 17 (2000) 1935-1947 | 10.1088/0264-9381/17/9/305 | null | gr-qc | null | Motivated by the invariance of current representations of quantum gravity
under diffeomorphisms much more general than isometries, the Haag-Kastler
setting is extended to manifolds without metric background structure. First,
the causal structure on a differentiable manifold M of arbitrary dimension
(d+1>2) can be def... | [
{
"created": "Fri, 19 Nov 1999 19:39:46 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Feb 2000 13:51:52 GMT",
"version": "v2"
},
{
"created": "Tue, 14 Mar 2000 20:41:39 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Rainer",
"Martin",
""
]
] | Motivated by the invariance of current representations of quantum gravity under diffeomorphisms much more general than isometries, the Haag-Kastler setting is extended to manifolds without metric background structure. First, the causal structure on a differentiable manifold M of arbitrary dimension (d+1>2) can be defin... |
1607.03478 | Sergio Vitorino Borba Gon\c{c}alves | F. G. Alvarenga, R. Fracalossi, R. C. Freitas and S. V. B.
Gon\c{c}alves | Classical and quantum cosmology with two perfect fluids: stiff matter
and radiation | 17 pages and 21 figures | null | 10.1007/s10714-017-2301-0 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/publicdomain/zero/1.0/ | In this work the homogeneous and isotropic Universe of
Friedmann-Robertson-Walker is studied in the presence of two fluids: stiff
matter and radiation described by the Schutz's formalism. We obtain to the
classic case the behaviour of the scale factor of the universe. For the quantum
case the wave packets are constru... | [
{
"created": "Tue, 12 Jul 2016 19:47:13 GMT",
"version": "v1"
}
] | 2017-10-18 | [
[
"Alvarenga",
"F. G.",
""
],
[
"Fracalossi",
"R.",
""
],
[
"Freitas",
"R. C.",
""
],
[
"Gonçalves",
"S. V. B.",
""
]
] | In this work the homogeneous and isotropic Universe of Friedmann-Robertson-Walker is studied in the presence of two fluids: stiff matter and radiation described by the Schutz's formalism. We obtain to the classic case the behaviour of the scale factor of the universe. For the quantum case the wave packets are construct... |
1002.2056 | Peter Dunsby | Anne Marie Nzioki, Peter K. S. Dunsby, Rituparno Goswami and Sante
Carloni | A Geometrical Approach to Strong Gravitational Lensing in f(R) Gravity | 9 pages | Phys.Rev.D83:024030,2011 | 10.1103/PhysRevD.83.024030 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a framework for the study of lensing in spherically symmetric
spacetimes within the context of f(R) gravity. Equations for the propagation of
null geodesics, together with an expression for the bending angle are derived
for any f(R) theory and then applied to an exact spherically symmetric solution
of R^n ... | [
{
"created": "Wed, 10 Feb 2010 10:11:16 GMT",
"version": "v1"
}
] | 2011-02-25 | [
[
"Nzioki",
"Anne Marie",
""
],
[
"Dunsby",
"Peter K. S.",
""
],
[
"Goswami",
"Rituparno",
""
],
[
"Carloni",
"Sante",
""
]
] | We present a framework for the study of lensing in spherically symmetric spacetimes within the context of f(R) gravity. Equations for the propagation of null geodesics, together with an expression for the bending angle are derived for any f(R) theory and then applied to an exact spherically symmetric solution of R^n gr... |
gr-qc/9908029 | Matt Visser | Carlos Barcelo (Washington University) and Matt Visser (Washington
University) | Traversable wormholes from massless conformally coupled scalar fields | 11 Pages, plain LaTeX2e, uses graphics.sty, three *.eps figures | Phys.Lett.B466:127-134,1999 | 10.1016/S0370-2693(99)01117-X | null | gr-qc hep-th | null | The massless conformally coupled scalar field is characterized by the
so-called "new improved stress-energy tensor", which is capable of classically
violating the null energy condition. When coupled to Einstein gravity we find a
three-parameter class of exact solutions. These exact solutions include the
Schwarzschild... | [
{
"created": "Mon, 9 Aug 1999 18:04:19 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Barcelo",
"Carlos",
"",
"Washington University"
],
[
"Visser",
"Matt",
"",
"Washington\n University"
]
] | The massless conformally coupled scalar field is characterized by the so-called "new improved stress-energy tensor", which is capable of classically violating the null energy condition. When coupled to Einstein gravity we find a three-parameter class of exact solutions. These exact solutions include the Schwarzschild g... |
2108.07454 | Ayan Banerjee | Juan M. Z. Pretel, Ayan Banerjee and Anirudh Pradhan | Electrically Charged Quark Stars in $4D$ Einstein-Gauss-Bonnet Gravity | 10 pages, 5 figures, 2 tables, accepted for publication in European
Physical Journal C | Eur. Phys. J. C 82 (2022) 180 | 10.1140/epjc/s10052-022-10123-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study the properties of compact spheres made of a charged
perfect fluid with a MIT bag model EoS for quark matter. Considering static
spherically symmetric spacetime we derive the hydrostatic equilibrium equations
in the recently formulated four dimensional Einstein-Gauss-Bonnet ($4D$ EGB)
gravity the... | [
{
"created": "Tue, 17 Aug 2021 06:09:24 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Aug 2021 06:21:50 GMT",
"version": "v2"
},
{
"created": "Sun, 13 Feb 2022 16:25:00 GMT",
"version": "v3"
}
] | 2022-03-01 | [
[
"Pretel",
"Juan M. Z.",
""
],
[
"Banerjee",
"Ayan",
""
],
[
"Pradhan",
"Anirudh",
""
]
] | In this work we study the properties of compact spheres made of a charged perfect fluid with a MIT bag model EoS for quark matter. Considering static spherically symmetric spacetime we derive the hydrostatic equilibrium equations in the recently formulated four dimensional Einstein-Gauss-Bonnet ($4D$ EGB) gravity theor... |
1508.06786 | Boris Bolliet | Susanne Schander, Aur\'elien Barrau, Boris Bolliet, Julien Grain,
Linda Linsefors, Jakub Mielczarek | Primordial scalar power spectrum from the Euclidean Big Bounce | 13 pages, 4 figures | Phys. Rev. D 93, 023531 (2016) | 10.1103/PhysRevD.93.023531 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In effective models of loop quantum cosmology, the holonomy corrections are
associated with deformations of space-time symmetries. The most evident
manifestation of the deformations is the emergence of an Euclidean phase
accompanying the non-singular bouncing dynamics of the scale factor. In this
article, we compute ... | [
{
"created": "Thu, 27 Aug 2015 10:00:11 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Oct 2015 07:20:18 GMT",
"version": "v2"
},
{
"created": "Fri, 15 Jan 2016 11:54:53 GMT",
"version": "v3"
}
] | 2016-02-03 | [
[
"Schander",
"Susanne",
""
],
[
"Barrau",
"Aurélien",
""
],
[
"Bolliet",
"Boris",
""
],
[
"Grain",
"Julien",
""
],
[
"Linsefors",
"Linda",
""
],
[
"Mielczarek",
"Jakub",
""
]
] | In effective models of loop quantum cosmology, the holonomy corrections are associated with deformations of space-time symmetries. The most evident manifestation of the deformations is the emergence of an Euclidean phase accompanying the non-singular bouncing dynamics of the scale factor. In this article, we compute th... |
1812.11291 | Arun Mathew | Arun Mathew and Malay K. Nandy | Prospect of Chandrasekhar's limit against modified dispersion relation | null | null | 10.1007/s10714-020-02686-y | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Newtonian gravity predicts the existence of white dwarfs with masses far
exceeding the Chandrasekhar limit when the equation of state of the degenerate
electron gas incorporates the effect of quantum spacetime fluctuations (via a
modified dispersion relation) even when the strength of the fluctuations is
taken to be ... | [
{
"created": "Sat, 29 Dec 2018 05:44:43 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Jan 2019 04:39:12 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Aug 2019 12:08:47 GMT",
"version": "v3"
}
] | 2020-04-23 | [
[
"Mathew",
"Arun",
""
],
[
"Nandy",
"Malay K.",
""
]
] | Newtonian gravity predicts the existence of white dwarfs with masses far exceeding the Chandrasekhar limit when the equation of state of the degenerate electron gas incorporates the effect of quantum spacetime fluctuations (via a modified dispersion relation) even when the strength of the fluctuations is taken to be ve... |
gr-qc/9701051 | Dorje C. Brody | Dorje C. Brody (ADMTP) and Lane P. Hughston (Merrill Lynch) | Statistical Geometry in Quantum Mechanics | 32 pages, LaTex file, Extended version to include quantum measurement
theory | null | 10.1098/rspa.1998.0266 | null | gr-qc | null | A statistical model M is a family of probability distributions, characterised
by a set of continuous parameters known as the parameter space. This possesses
natural geometrical properties induced by the embedding of the family of
probability distributions into the Hilbert space H. By consideration of the
square-root ... | [
{
"created": "Thu, 23 Jan 1997 15:01:43 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Oct 1997 16:12:18 GMT",
"version": "v2"
}
] | 2009-10-30 | [
[
"Brody",
"Dorje C.",
"",
"ADMTP"
],
[
"Hughston",
"Lane P.",
"",
"Merrill Lynch"
]
] | A statistical model M is a family of probability distributions, characterised by a set of continuous parameters known as the parameter space. This possesses natural geometrical properties induced by the embedding of the family of probability distributions into the Hilbert space H. By consideration of the square-root de... |
1007.1917 | Arturo Stabile | A. Stabile | The most general fourth order theory of Gravity at low energy | 7 pages, 2 figures | Phys.Rev.D82:124026,2010 | 10.1103/PhysRevD.82.124026 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Newtonian limit of the most general fourth order gravity is performed
with metric approach in the Jordan frame with no gauge condition. The most
general theory with fourth order differential equations is obtained by
generalizing the $f(R)$ term in the action with a generic function containing
other two curvature ... | [
{
"created": "Mon, 12 Jul 2010 14:44:14 GMT",
"version": "v1"
}
] | 2010-12-28 | [
[
"Stabile",
"A.",
""
]
] | The Newtonian limit of the most general fourth order gravity is performed with metric approach in the Jordan frame with no gauge condition. The most general theory with fourth order differential equations is obtained by generalizing the $f(R)$ term in the action with a generic function containing other two curvature in... |
2101.12126 | Marcel Ignacio Y\'a\~nez Reyes | Marco Rivera-Tapia and Marcel I. Y\'a\~nez Reyes and A. Delgado and G.
Rubilar | Outperforming classical estimation of Post-Newtonian parameters of
Earth's gravitational field using quantum metrology | 25 pages, 14 Figures | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | The Hong-Ou-Mandel (HOM) effect is analyzed for photons in a modified
Mach-Zehnder setup with two particles experiencing different gravitational
potentials, which are later recombined using a beam-splitter. It is found that
the HOM effect depends directly on the relativistic time dilation between the
arms of the setu... | [
{
"created": "Thu, 28 Jan 2021 17:16:26 GMT",
"version": "v1"
}
] | 2021-01-29 | [
[
"Rivera-Tapia",
"Marco",
""
],
[
"Reyes",
"Marcel I. Yáñez",
""
],
[
"Delgado",
"A.",
""
],
[
"Rubilar",
"G.",
""
]
] | The Hong-Ou-Mandel (HOM) effect is analyzed for photons in a modified Mach-Zehnder setup with two particles experiencing different gravitational potentials, which are later recombined using a beam-splitter. It is found that the HOM effect depends directly on the relativistic time dilation between the arms of the setup.... |
0803.1629 | Orchidea Maria Lecian | O.M. Lecian, G. Montani | Fundamental Symmetries of the extended Spacetime | 4 pages, to appear in Proceedings of the II Stueckelberg Workshop -
Int. J. Mod. Phys. A | Int.J.Mod.Phys.A23:1266-1269,2008 | 10.1142/S0217751X08040196 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | On the basis of Fourier duality and Stone-von Neumann theorem, we will
examine polymer-quantization techniques and modified uncertainty relations as
possible 1-extraD compactification schemes for a phenomenological truncation of
the extraD tower.
| [
{
"created": "Tue, 11 Mar 2008 16:34:30 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Lecian",
"O. M.",
""
],
[
"Montani",
"G.",
""
]
] | On the basis of Fourier duality and Stone-von Neumann theorem, we will examine polymer-quantization techniques and modified uncertainty relations as possible 1-extraD compactification schemes for a phenomenological truncation of the extraD tower. |
0711.0150 | Slava G. Turyshev | S.G. Turyshev, U.E. Israelsson, M. Shao, N. Yu, A. Kusenko, E.L.
Wright, C.W.F. Everitt, M.A. Kasevich, J.A. Lipa, J.C. Mester, R.D.
Reasenberg, R.L. Walsworth, N. Ashby, H. Gould, H.-J.Paik | Space-based research in fundamental physics and quantum technologies | a white paper, revtex, 27 pages, updated bibliography | Int.J.Mod.Phys.D16:1879-1925,2008 | 10.1142/S0218271807011760 | null | gr-qc astro-ph hep-ph physics.space-ph | null | Space-based experiments today can uniquely address important questions
related to the fundamental laws of Nature. In particular, high-accuracy physics
experiments in space can test relativistic gravity and probe the physics beyond
the Standard Model; they can perform direct detection of gravitational waves
and are na... | [
{
"created": "Thu, 1 Nov 2007 19:34:10 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Dec 2007 21:18:30 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Mar 2008 02:22:48 GMT",
"version": "v3"
}
] | 2011-04-11 | [
[
"Turyshev",
"S. G.",
""
],
[
"Israelsson",
"U. E.",
""
],
[
"Shao",
"M.",
""
],
[
"Yu",
"N.",
""
],
[
"Kusenko",
"A.",
""
],
[
"Wright",
"E. L.",
""
],
[
"Everitt",
"C. W. F.",
""
],
[
"Kasevich",
... | Space-based experiments today can uniquely address important questions related to the fundamental laws of Nature. In particular, high-accuracy physics experiments in space can test relativistic gravity and probe the physics beyond the Standard Model; they can perform direct detection of gravitational waves and are natu... |
gr-qc/0105060 | null | Sergei M. Kopeikin (Department of Physics and Astronomy, University of
Missouri-Columbia) | Testing Relativistic Effect of Propagation of Gravity by Very-Long
Baseline Interferometry | 11 pages, accepted to ApJ Letters | Astrophys.J.556:L1-L6,2001 | 10.1086/322872 | null | gr-qc astro-ph hep-ph hep-th physics.space-ph | null | It is shown that the finite speed of gravity affects very-long baseline
interferometric observations of quasars during the time of their line-of-sight
close angular encounter with Jupiter. The next such event will take place in
2002, September 8. The present Letter suggests a new experimental test of
general relativi... | [
{
"created": "Thu, 17 May 2001 16:07:36 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jun 2001 23:16:47 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Kopeikin",
"Sergei M.",
"",
"Department of Physics and Astronomy, University of\n Missouri-Columbia"
]
] | It is shown that the finite speed of gravity affects very-long baseline interferometric observations of quasars during the time of their line-of-sight close angular encounter with Jupiter. The next such event will take place in 2002, September 8. The present Letter suggests a new experimental test of general relativity... |
1211.7026 | Subenoy Chakraborty | Subenoy Chakraborty | Generalized Bekenstein-Hawking system: Logarithmic Correction | 10 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present work is a generalization of the recent work [arXiv: 1206.1420] on
the modified Hawking temperature on the event horizon. Here the Hawking
temperature is generalized by multiplying the modified Hawking temperature by a
variable parameter \alpha representing the ratio of the growth rate of the
apparent hori... | [
{
"created": "Mon, 26 Nov 2012 12:32:20 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Apr 2014 12:25:20 GMT",
"version": "v2"
}
] | 2014-04-24 | [
[
"Chakraborty",
"Subenoy",
""
]
] | The present work is a generalization of the recent work [arXiv: 1206.1420] on the modified Hawking temperature on the event horizon. Here the Hawking temperature is generalized by multiplying the modified Hawking temperature by a variable parameter \alpha representing the ratio of the growth rate of the apparent horizo... |
2305.19819 | Yongqiang Wang | Peng-Bo Ding, Tian-Xiang Ma, Yong-Qiang Wang | Study of Boson Stars with Wormhole | 23 pages, 17 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we reconsider the mixed system of BSs with wormholes at their
center which performed by complex scalar field and phantom field and study a
whole new condition about the potential. Both the symmetric and asymmetric
solutions in the two asymptotically flat regions are obtained by using
numerical method a... | [
{
"created": "Wed, 31 May 2023 13:02:09 GMT",
"version": "v1"
}
] | 2023-06-01 | [
[
"Ding",
"Peng-Bo",
""
],
[
"Ma",
"Tian-Xiang",
""
],
[
"Wang",
"Yong-Qiang",
""
]
] | In this paper, we reconsider the mixed system of BSs with wormholes at their center which performed by complex scalar field and phantom field and study a whole new condition about the potential. Both the symmetric and asymmetric solutions in the two asymptotically flat regions are obtained by using numerical method and... |
2110.07411 | Jaroslav Vrba | Zden\v{e}k Stuchl\'ik and Jaroslav Vrba | Supermassive black holes surrounded by dark matter modeled as
anisotropic fluid: epicyclic oscillations and their fitting to observed QPOs | 19 pages, 9 figures, 2 tables | null | 10.1088/1475-7516/2021/11/059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently introduced exact solution of the Einstein gravity coupled minimally
to an anisotropic fluid representing dark matter can well represent
supermassive black holes in galactic nuclei with realistic distribution of dark
matter around the black hole, given by the Hernquist-like density distribution.
For these flu... | [
{
"created": "Thu, 14 Oct 2021 14:42:43 GMT",
"version": "v1"
}
] | 2021-12-08 | [
[
"Stuchlík",
"Zdeněk",
""
],
[
"Vrba",
"Jaroslav",
""
]
] | Recently introduced exact solution of the Einstein gravity coupled minimally to an anisotropic fluid representing dark matter can well represent supermassive black holes in galactic nuclei with realistic distribution of dark matter around the black hole, given by the Hernquist-like density distribution. For these fluid... |
2307.04444 | Yu Zhang | Qian Li, Yu Zhang, Zhi-Wen Lin, Qi-Quan Li, Qi Sun | Weak gravitational lensing by an ESTGB black hole in the presence of a
plasma | 24 pages, 15 figures | Modern Physics Letters A Vol. 38, No. 04, 2350025 (2023) | 10.1142/S0217732323500256 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is devoted to studying the weak-field gravitational lensing
properties of a 4D ESTGB black hole, which is surrounded by the plasma medium.
The effects of the magnetic charges and the three plasma distribution models in
the deflection of light around a 4D ESTGB black hole are investigated in
detail. We find... | [
{
"created": "Mon, 10 Jul 2023 09:53:13 GMT",
"version": "v1"
}
] | 2023-07-11 | [
[
"Li",
"Qian",
""
],
[
"Zhang",
"Yu",
""
],
[
"Lin",
"Zhi-Wen",
""
],
[
"Li",
"Qi-Quan",
""
],
[
"Sun",
"Qi",
""
]
] | This paper is devoted to studying the weak-field gravitational lensing properties of a 4D ESTGB black hole, which is surrounded by the plasma medium. The effects of the magnetic charges and the three plasma distribution models in the deflection of light around a 4D ESTGB black hole are investigated in detail. We find t... |
1903.11066 | T. P. Singh | Shounak De, Tejinder P. Singh, Abhinav Varma | Quantum gravity as an emergent phenomenon | 8 pages, 1 figure, Essay written for the Gravity Research Foundation
2019 Awards for Essays on Gravitation. arXiv admin note: substantial text
overlap with arXiv:1903.05402; v2: this essay is a significantly condensed
version of arXiv:1903.05402, Ref. 2 updated, Honorable Mention, to appear in
Int. J. Mod. Phys | null | 10.1142/S0218271819440036 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There ought to exist a reformulation of quantum theory which does not depend
on classical time. To achieve such a reformulation, we introduce the concept of
an atom of space-time-matter (STM). An STM atom is a classical non-commutative
geometry, based on an asymmetric metric, and sourced by a closed string.
Different... | [
{
"created": "Tue, 26 Mar 2019 16:42:22 GMT",
"version": "v1"
},
{
"created": "Wed, 22 May 2019 04:29:23 GMT",
"version": "v2"
}
] | 2019-07-17 | [
[
"De",
"Shounak",
""
],
[
"Singh",
"Tejinder P.",
""
],
[
"Varma",
"Abhinav",
""
]
] | There ought to exist a reformulation of quantum theory which does not depend on classical time. To achieve such a reformulation, we introduce the concept of an atom of space-time-matter (STM). An STM atom is a classical non-commutative geometry, based on an asymmetric metric, and sourced by a closed string. Different s... |
2303.06115 | William Barker Dr | A. N. Lasenby and M. P. Hobson and W. E. V. Barker | Gravitomagnetism and galaxy rotation curves: a cautionary tale | Minor textual changes | null | null | null | gr-qc astro-ph.GA | http://creativecommons.org/licenses/by/4.0/ | We investigate recent claims that gravitomagnetic effects in linearised
general relativity can explain flat and rising rotation curves, such as those
observed in galaxies, without the need for dark matter. If one models a galaxy
as an axisymmetric, stationary, rotating, non-relativistic and pressureless
'dust' of sta... | [
{
"created": "Fri, 10 Mar 2023 18:04:36 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Apr 2023 20:44:30 GMT",
"version": "v2"
}
] | 2023-04-13 | [
[
"Lasenby",
"A. N.",
""
],
[
"Hobson",
"M. P.",
""
],
[
"Barker",
"W. E. V.",
""
]
] | We investigate recent claims that gravitomagnetic effects in linearised general relativity can explain flat and rising rotation curves, such as those observed in galaxies, without the need for dark matter. If one models a galaxy as an axisymmetric, stationary, rotating, non-relativistic and pressureless 'dust' of stars... |
2112.13860 | Kristina Giesel | Kristina Giesel, Bao-Fei Li, Parampreet Singh, Stefan Andreas Weigl | On consistent gauge fixing conditions in polymerized gravitational
systems | Minor correction of the third assumption in Corollaries 1 and 2 from
published version in PRD, 31 pages | Phys. Rev. D 105, 066023 2022 | 10.1103/PhysRevD.105.066023 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For classical gravitational systems the lapse function and the shift vector
are usually determined by imposing appropriate gauge fixing conditions and then
demanding their preservation with respect to the dynamics generated by a
canonical Hamiltonian. Effective descriptions encoding quantum geometric
effects motivate... | [
{
"created": "Mon, 27 Dec 2021 19:00:06 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Apr 2022 09:29:44 GMT",
"version": "v2"
}
] | 2022-04-11 | [
[
"Giesel",
"Kristina",
""
],
[
"Li",
"Bao-Fei",
""
],
[
"Singh",
"Parampreet",
""
],
[
"Weigl",
"Stefan Andreas",
""
]
] | For classical gravitational systems the lapse function and the shift vector are usually determined by imposing appropriate gauge fixing conditions and then demanding their preservation with respect to the dynamics generated by a canonical Hamiltonian. Effective descriptions encoding quantum geometric effects motivated ... |
2304.08835 | Bahram Mashhoon | Bahram Mashhoon, Masoud Molaei, and Yuri N. Obukhov | Spin-Gravity Coupling in a Rotating Universe | 37 pages; v2: presentation improved, invited contribution to appear
in Symmetry | Symmetry 15, 1518 (2023) | 10.3390/sym15081518 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The coupling of intrinsic spin with the nonlinear gravitomagnetic fields of
Goedel-type spacetimes is studied. We work with Goedel-type universes in order
to show that the main features of spin-gravity coupling are independent of
causality problems of the Goedel universe. The connection between the
spin-gravitomagnet... | [
{
"created": "Tue, 18 Apr 2023 09:04:22 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Aug 2023 14:05:35 GMT",
"version": "v2"
}
] | 2023-08-07 | [
[
"Mashhoon",
"Bahram",
""
],
[
"Molaei",
"Masoud",
""
],
[
"Obukhov",
"Yuri N.",
""
]
] | The coupling of intrinsic spin with the nonlinear gravitomagnetic fields of Goedel-type spacetimes is studied. We work with Goedel-type universes in order to show that the main features of spin-gravity coupling are independent of causality problems of the Goedel universe. The connection between the spin-gravitomagnetic... |
1912.05569 | Liang Ma | Liang Ma and H. Lu | Bounds on Photon Spheres and Shadows of Charged Black Holes in
Einstein-Gauss-Bonnet-Maxwell Gravity | Latex, 11 pages | null | 10.1016/j.physletb.2020.135535 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider spherically symmetric and static charged black holes in
Einstein-Gauss-Bonnet-Maxwell gravities in general $D\ge 5$ dimensions and
study their photon spheres and black hole shadows. We show that they all
satisfy the sequence of inequalities recently proposed relating a black hole's
horizon, photon sphere,... | [
{
"created": "Wed, 11 Dec 2019 19:00:44 GMT",
"version": "v1"
}
] | 2020-06-10 | [
[
"Ma",
"Liang",
""
],
[
"Lu",
"H.",
""
]
] | We consider spherically symmetric and static charged black holes in Einstein-Gauss-Bonnet-Maxwell gravities in general $D\ge 5$ dimensions and study their photon spheres and black hole shadows. We show that they all satisfy the sequence of inequalities recently proposed relating a black hole's horizon, photon sphere, s... |
0911.0258 | Maria E. Gabach-Clement | Mar\'ia E. Gabach Clement | Conformally flat black hole initial data, with one cylindrical end | Minor changes and formula (21) revised according to the published
version in Class. Quantum Grav. (2010). Results unchanged | Class.Quant.Grav.27:125010,2010 | 10.1088/0264-9381/27/12/125010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a complete analytical proof of existence and uniqueness of
extreme-like black hole initial data for Einstein equations, which possess a
cilindrical end, analogous to extreme Kerr, extreme Reissner Nordstrom, and
extreme Bowen-York's initial data. This extends and refines a previous result
\cite{dain-gabach09}... | [
{
"created": "Mon, 2 Nov 2009 19:22:13 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Aug 2012 11:41:44 GMT",
"version": "v2"
}
] | 2012-08-17 | [
[
"Clement",
"María E. Gabach",
""
]
] | We give a complete analytical proof of existence and uniqueness of extreme-like black hole initial data for Einstein equations, which possess a cilindrical end, analogous to extreme Kerr, extreme Reissner Nordstrom, and extreme Bowen-York's initial data. This extends and refines a previous result \cite{dain-gabach09} t... |
0802.2431 | Zurab Silagadze | O.I. Chashchina, Z.K. Silagadze | Remark on orbital precession due to central-force perturbations | 3 pages, ReVTeX4, title changed to match the version to be published
in Phys. Rev. D, one new reference added, minor corrections in the text | Phys.Rev.D77:107502,2008 | 10.1103/PhysRevD.77.107502 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is a comment on the recent paper by G. S. Adkins and J. McDonnell
``Orbital precession due to central-force perturbations'' published in Phys.
Rev. D75 (2007), 082001 [arXiv:gr-qc/0702015]. We show that the main result of
this paper, the formula for the precession of Keplerian orbits induced by
central-force per... | [
{
"created": "Mon, 18 Feb 2008 10:19:22 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Mar 2008 04:58:32 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Chashchina",
"O. I.",
""
],
[
"Silagadze",
"Z. K.",
""
]
] | This is a comment on the recent paper by G. S. Adkins and J. McDonnell ``Orbital precession due to central-force perturbations'' published in Phys. Rev. D75 (2007), 082001 [arXiv:gr-qc/0702015]. We show that the main result of this paper, the formula for the precession of Keplerian orbits induced by central-force pertu... |
2407.03702 | Rog\'erio Capobianco | Rog\'erio Capobianco, Betti Hartmann and Jutta Kunz | Motion of charged particles in an electromagnetic swirling universe: The
complete set of solutions | 14 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the motion of electrically and magnetically charged particles in
the electromagnetic swirling universe. We show that the equations of motion can
be decoupled in the Hamilton-Jacobi formalism, revealing the existence of a
fourth constant of motion. The equations of motion can be analytically
integrated. The... | [
{
"created": "Thu, 4 Jul 2024 07:43:04 GMT",
"version": "v1"
}
] | 2024-07-08 | [
[
"Capobianco",
"Rogério",
""
],
[
"Hartmann",
"Betti",
""
],
[
"Kunz",
"Jutta",
""
]
] | We discuss the motion of electrically and magnetically charged particles in the electromagnetic swirling universe. We show that the equations of motion can be decoupled in the Hamilton-Jacobi formalism, revealing the existence of a fourth constant of motion. The equations of motion can be analytically integrated. The s... |
1205.3112 | John T. Whelan | John T. Whelan, Emma L. Robinson, Joseph D. Romano, and Eric H. Thrane | Treatment of Calibration Uncertainty in Multi-Baseline Cross-Correlation
Searches for Gravitational Waves | 4 pages; submitted to the Proceedings of the International Conference
on Gravitation and Cosmology (ICGC 2011), Goa, India, December 2011 | J. Phys.: Conf. Ser. 484 (2014) 012027 | 10.1088/1742-6596/484/1/012027 | LIGO-P1200051-v4 | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Uncertainty in the calibration of gravitational-wave (GW) detector data leads
to systematic errors which must be accounted for in setting limits on the
strength of GW signals. When cross-correlation measurements are made using data
from a pair of instruments, as in searches for a stochastic GW background, the
calibra... | [
{
"created": "Mon, 14 May 2012 17:30:38 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Jun 2012 21:46:27 GMT",
"version": "v2"
},
{
"created": "Fri, 3 Aug 2012 18:53:22 GMT",
"version": "v3"
}
] | 2014-03-07 | [
[
"Whelan",
"John T.",
""
],
[
"Robinson",
"Emma L.",
""
],
[
"Romano",
"Joseph D.",
""
],
[
"Thrane",
"Eric H.",
""
]
] | Uncertainty in the calibration of gravitational-wave (GW) detector data leads to systematic errors which must be accounted for in setting limits on the strength of GW signals. When cross-correlation measurements are made using data from a pair of instruments, as in searches for a stochastic GW background, the calibrati... |
1506.05065 | P.C.E. Stamp | P.C.E. Stamp | Rationale for a Correlated Worldline Theory of Quantum Gravity | 26 pages, 15 figures; intended for broad audience. New Journal of
Physics, 2015 (in press) | null | null | null | gr-qc cond-mat.other quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is argued that gravity should cause a breakdown of quantum mechanics, at
low energies, accessible to table-top experiments. It is then shown that one
can formulate a theory of quantum gravity in which gravitational correlations
exist between worldline or worldsheet paths, for the particle or field of
interest. Usi... | [
{
"created": "Tue, 16 Jun 2015 18:43:19 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Stamp",
"P. C. E.",
""
]
] | It is argued that gravity should cause a breakdown of quantum mechanics, at low energies, accessible to table-top experiments. It is then shown that one can formulate a theory of quantum gravity in which gravitational correlations exist between worldline or worldsheet paths, for the particle or field of interest. Using... |
1903.08211 | Rajibul Shaikh | Rajibul Shaikh, Pritam Banerjee, Suvankar Paul, Tapobrata Sarkar | Analytical approach to strong gravitational lensing from ultracompact
objects | 17 pages, 3 figures, minor corrections, published in PRD | Phys. Rev. D 99, 104040 (2019) | 10.1103/PhysRevD.99.104040 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Strong gravitational lensing from black holes results in the formation of
relativistic images, in particular, relativistic Einstein rings. For objects
with event horizons, the radius of the unstable light ring (photon sphere) is
the lowest radius at which a relativistic image might be formed. For
horizonless ultracom... | [
{
"created": "Tue, 19 Mar 2019 18:45:06 GMT",
"version": "v1"
},
{
"created": "Sat, 18 May 2019 11:16:44 GMT",
"version": "v2"
}
] | 2019-05-21 | [
[
"Shaikh",
"Rajibul",
""
],
[
"Banerjee",
"Pritam",
""
],
[
"Paul",
"Suvankar",
""
],
[
"Sarkar",
"Tapobrata",
""
]
] | Strong gravitational lensing from black holes results in the formation of relativistic images, in particular, relativistic Einstein rings. For objects with event horizons, the radius of the unstable light ring (photon sphere) is the lowest radius at which a relativistic image might be formed. For horizonless ultracompa... |
1711.04245 | Shaun Inglis Ph.D. (Phys. Sci.) | Shaun Inglis, Peter Jarvis | The self-coupled Einstein-Cartan-Dirac equations in terms of Dirac
bilinears | 21 pages, updated version accepted for publication | null | 10.1088/1751-8121/aaf4e0 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we present the algebraic rearrangement, or matrix inversion
of the Dirac equation in a curved Riemann-Cartan spacetime with torsion, the
presence of non-vanishing torsion is implied by the intrinsic spin-1/2 of the
Dirac field. We then demonstrate how the inversion leads to a reformulation of
the full... | [
{
"created": "Sun, 12 Nov 2017 07:11:32 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Dec 2018 00:53:03 GMT",
"version": "v2"
}
] | 2018-12-18 | [
[
"Inglis",
"Shaun",
""
],
[
"Jarvis",
"Peter",
""
]
] | In this article we present the algebraic rearrangement, or matrix inversion of the Dirac equation in a curved Riemann-Cartan spacetime with torsion, the presence of non-vanishing torsion is implied by the intrinsic spin-1/2 of the Dirac field. We then demonstrate how the inversion leads to a reformulation of the fully ... |
0802.4305 | Daniel M\"uller | Daniel Muller | Geodesic Motion on Closed Spaces: Two Numerical Examples | version accepted for publication | Physics Letters A, 376, 221-226 (2012) | 10.1016/j.physleta.2011.11.041 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The geodesic structure is very closely related to the trace of the Laplace
operator, involved in the calculation of the expectation value of the energy
momentum tensor in Universes with non trivial topology. The purpose of this
work is to provide concrete numerical examples of geodesic flows. Two manifolds
with genus... | [
{
"created": "Thu, 28 Feb 2008 22:51:46 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Mar 2008 02:35:58 GMT",
"version": "v2"
},
{
"created": "Mon, 30 Jan 2012 13:52:19 GMT",
"version": "v3"
}
] | 2015-05-13 | [
[
"Muller",
"Daniel",
""
]
] | The geodesic structure is very closely related to the trace of the Laplace operator, involved in the calculation of the expectation value of the energy momentum tensor in Universes with non trivial topology. The purpose of this work is to provide concrete numerical examples of geodesic flows. Two manifolds with genus $... |
1905.01088 | Bobir Toshmatov | Bobir Toshmatov, Daniele Malafarina, Naresh Dadhich | Harmonic oscillations of neutral particles in the $\gamma$-metric | 11 pages, 5 figures | Phys. Rev. D 100, 044001 (2019) | 10.1103/PhysRevD.100.044001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a well-known static, axially symmetric, vacuum solution of
Einstein equations belonging to Weyl's class and determine the fundamental
frequencies of small harmonic oscillations of test particles around stable
circular orbits in the equatorial plane. We discuss the radial profiles of
frequencies of the rad... | [
{
"created": "Fri, 3 May 2019 09:30:24 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Aug 2019 05:27:34 GMT",
"version": "v2"
}
] | 2019-08-05 | [
[
"Toshmatov",
"Bobir",
""
],
[
"Malafarina",
"Daniele",
""
],
[
"Dadhich",
"Naresh",
""
]
] | We consider a well-known static, axially symmetric, vacuum solution of Einstein equations belonging to Weyl's class and determine the fundamental frequencies of small harmonic oscillations of test particles around stable circular orbits in the equatorial plane. We discuss the radial profiles of frequencies of the radia... |
2204.03322 | Andr\'e Gro{\ss}ardt | Andr\'e Gro{\ss}ardt | Gravitational entanglement and the mass contribution of internal energy
in nonrelativistic quantum systems | Essay written for the Gravity Research Foundation 2022 Awards for
Essays on Gravitation | Int. J, Mod. Phys. D 31, 2242017 (2022) | 10.1142/S0218271822420172 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, interest has increased in the entanglement of remote quantum
particles through the Newtonian gravitational interaction, both from a
fundamental perspective and as a test case for the quantization of gravity.
Likewise, post-Newtonian gravitational effects in composite nonrelativistic
quantum systems have bee... | [
{
"created": "Thu, 7 Apr 2022 09:39:07 GMT",
"version": "v1"
}
] | 2022-12-29 | [
[
"Großardt",
"André",
""
]
] | Recently, interest has increased in the entanglement of remote quantum particles through the Newtonian gravitational interaction, both from a fundamental perspective and as a test case for the quantization of gravity. Likewise, post-Newtonian gravitational effects in composite nonrelativistic quantum systems have been ... |
1310.4531 | Gustavo Joaquin Turiaci | Gustavo Joaquin Turiaci and Matias Zaldarriaga | Non-Gaussianities in Dissipative EFT of Inflation Coupled to a Fluid | 42 pages, 9 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We studied models of inflation with a preferred clock specifying the end of
inflation and giving the curvature perturbations, coupled with another
non-equivalent clock that at late times defines the same frame and do not
contribute to the density perturbations. This can happen in the framework of
dissipative EFT of i... | [
{
"created": "Wed, 16 Oct 2013 22:00:34 GMT",
"version": "v1"
}
] | 2013-10-18 | [
[
"Turiaci",
"Gustavo Joaquin",
""
],
[
"Zaldarriaga",
"Matias",
""
]
] | We studied models of inflation with a preferred clock specifying the end of inflation and giving the curvature perturbations, coupled with another non-equivalent clock that at late times defines the same frame and do not contribute to the density perturbations. This can happen in the framework of dissipative EFT of inf... |
1212.2307 | Edwin J. Son | Edwin J. Son, Wontae Kim | Two critical phenomena in the exactly soluble quantized Schwarzschild
black hole | v2. improved version published in JHEP; 11 pages, 3 figures,
clarifications and references added | J. High Energy Phys. 03 (2013) 060 | 10.1007/JHEP03(2013)060 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study thermodynamic quantities and phase transitions of a spherically
symmetric Schwarzschild black hole by taking into account the back reaction
through the conformal anomaly of matter fields, and show that there exists an
additional phase transition to the conventional Hawking-Page phase transition.
The small bl... | [
{
"created": "Tue, 11 Dec 2012 06:01:13 GMT",
"version": "v1"
},
{
"created": "Sat, 16 Mar 2013 07:38:47 GMT",
"version": "v2"
}
] | 2013-03-19 | [
[
"Son",
"Edwin J.",
""
],
[
"Kim",
"Wontae",
""
]
] | We study thermodynamic quantities and phase transitions of a spherically symmetric Schwarzschild black hole by taking into account the back reaction through the conformal anomaly of matter fields, and show that there exists an additional phase transition to the conventional Hawking-Page phase transition. The small blac... |
2301.12666 | Rui Xu | Rui Xu | A Four-Parameter Black-Hole Solution in the Bumblebee Gravity Model | Presented at the Ninth Meeting on CPT and Lorentz Symmetry,
Bloomington, Indiana, May 17-26, 2022 | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by-sa/4.0/ | The bumblebee gravity model includes a class of vector-tensor theories of
gravitation where the vector field couples to the Ricci tensor quadratically.
We obtain an analytical spherical black-hole solution in this model. The
solution has four parameters, expanding the two-parameter solution family known
in the litera... | [
{
"created": "Mon, 30 Jan 2023 05:02:17 GMT",
"version": "v1"
}
] | 2023-01-31 | [
[
"Xu",
"Rui",
""
]
] | The bumblebee gravity model includes a class of vector-tensor theories of gravitation where the vector field couples to the Ricci tensor quadratically. We obtain an analytical spherical black-hole solution in this model. The solution has four parameters, expanding the two-parameter solution family known in the literatu... |
gr-qc/9402041 | Charles R. Evans | Charles R. Evans and Jason S. Coleman | Observation of critical phenomena and self-similarity in the
gravitational collapse of radiation fluid | 10 pages (LaTeX) (to appear in Phys. Rev. Lett.), TAR-039-UNC | Phys.Rev.Lett. 72 (1994) 1782-1785 | 10.1103/PhysRevLett.72.1782 | null | gr-qc | null | We observe critical phenomena in spherical collapse of radiation fluid. A
sequence of spacetimes $\cal{S}[\eta]$ is numerically computed, containing
models ($\eta\ll 1$) that adiabatically disperse and models ($\eta\gg 1$) that
form a black hole. Near the critical point ($\eta_c$), evolutions develop a
self-similar r... | [
{
"created": "Wed, 23 Feb 1994 04:59:49 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Evans",
"Charles R.",
""
],
[
"Coleman",
"Jason S.",
""
]
] | We observe critical phenomena in spherical collapse of radiation fluid. A sequence of spacetimes $\cal{S}[\eta]$ is numerically computed, containing models ($\eta\ll 1$) that adiabatically disperse and models ($\eta\gg 1$) that form a black hole. Near the critical point ($\eta_c$), evolutions develop a self-similar reg... |
1004.1714 | Sebastiano Sonego | Sebastiano Sonego | Ultrastatic spacetimes | 13 pages | J.Math.Phys.51:092502,2010 | 10.1063/1.3485599 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Several calculations in conformally static spacetimes rely on the
introduction of an ultrastatic background. I describe the general properties of
ultrastatic spacetimes, and then focus on the problem of whether a given
spacetime can be ultrastatic, or conformally ultrastatic, in more than one way.
I show that the fir... | [
{
"created": "Sat, 10 Apr 2010 14:27:25 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Oct 2010 07:50:23 GMT",
"version": "v2"
}
] | 2011-04-07 | [
[
"Sonego",
"Sebastiano",
""
]
] | Several calculations in conformally static spacetimes rely on the introduction of an ultrastatic background. I describe the general properties of ultrastatic spacetimes, and then focus on the problem of whether a given spacetime can be ultrastatic, or conformally ultrastatic, in more than one way. I show that the first... |
2101.03115 | Madhavan Varadarajan | Madhavan Varadarajan | Euclidean LQG Dynamics: An Electric Shift in Perspective | 37 pages, 7 figures | null | 10.1088/1361-6382/abfc2d | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Loop Quantum Gravity (LQG) is a non-perturbative attempt at quantization of a
classical phase space description of gravity in terms of $SU(2)$ connections
and electric fields. As emphasized recently [1], on this phase space, classical
gravitational evolution in $time$ can be understood in terms of certain gauge
covar... | [
{
"created": "Fri, 8 Jan 2021 17:15:27 GMT",
"version": "v1"
}
] | 2021-07-07 | [
[
"Varadarajan",
"Madhavan",
""
]
] | Loop Quantum Gravity (LQG) is a non-perturbative attempt at quantization of a classical phase space description of gravity in terms of $SU(2)$ connections and electric fields. As emphasized recently [1], on this phase space, classical gravitational evolution in $time$ can be understood in terms of certain gauge covaria... |
1806.11439 | Yongwan Gim | Yongwan Gim, Hwajin Um, Wontae Kim | Unruh temperatures in circular and drifted Rindler motions | 13 pages, 2 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the temperatures for the circular and drifted Rindler motions by
employing the Unruh-DeWitt detector method. In the circular motion, the
temperature is increasing along the radius of the circular motion until it
reaches the maximum, and then it is decreasing and eventually vanishing at the
limit to the radiu... | [
{
"created": "Thu, 28 Jun 2018 08:05:43 GMT",
"version": "v1"
}
] | 2018-07-02 | [
[
"Gim",
"Yongwan",
""
],
[
"Um",
"Hwajin",
""
],
[
"Kim",
"Wontae",
""
]
] | We study the temperatures for the circular and drifted Rindler motions by employing the Unruh-DeWitt detector method. In the circular motion, the temperature is increasing along the radius of the circular motion until it reaches the maximum, and then it is decreasing and eventually vanishing at the limit to the radius ... |
1610.06532 | Leonid Perlov | Leonid Perlov | Uncertainty Principle in Loop Quantum Cosmology by Moyal Formalism | null | Journal of Mathematical Physics 59, 032304 (2018) | 10.1063/1.5013206 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we derive the uncertainty principle for the Loop Quantum
Cosmology homogeneous and isotropic FLWR model with the holonomy-flux algebra.
The uncertainty principle is between the variables $c$, with the meaning of
connection and $\mu$ having the meaning of the physical cell volume to the
power $2/3$, i.e ... | [
{
"created": "Thu, 20 Oct 2016 18:31:53 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Feb 2017 04:15:14 GMT",
"version": "v2"
},
{
"created": "Wed, 22 Feb 2017 03:51:03 GMT",
"version": "v3"
},
{
"created": "Fri, 6 Apr 2018 03:15:23 GMT",
"version": "v4"
}
] | 2018-04-09 | [
[
"Perlov",
"Leonid",
""
]
] | In this paper we derive the uncertainty principle for the Loop Quantum Cosmology homogeneous and isotropic FLWR model with the holonomy-flux algebra. The uncertainty principle is between the variables $c$, with the meaning of connection and $\mu$ having the meaning of the physical cell volume to the power $2/3$, i.e $v... |
gr-qc/0302091 | Andrzej Woszczyna | Zdzislaw A. Golda and Andrzej Woszczyna | A field theory approach to cosmological density perturbations | null | Phys.Lett. A310 (2003) 357-362 | 10.1016/S0375-9601(03)00380-3 | null | gr-qc | null | Adiabatic perturbations propagate in the expanding universe like scalar
massless fields in some effective Robertson-Walker space-time.
| [
{
"created": "Sat, 22 Feb 2003 21:16:19 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Apr 2004 20:37:09 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Golda",
"Zdzislaw A.",
""
],
[
"Woszczyna",
"Andrzej",
""
]
] | Adiabatic perturbations propagate in the expanding universe like scalar massless fields in some effective Robertson-Walker space-time. |
1906.00343 | Hamid Reza Sepangi | Mohaddese Heydari-Fard, Malihe Heydari-Fard, Hamid Reza Sepangi | Higher-order geodesic deviations and orbital precession in a Kerr-Newman
space-time | 15 pages, 3 figures | null | 10.1007/s10714-019-2557-7 | Gen. Rel. Grav. 51 (2019) no.6, 77 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A novel approximation method in studying the perihelion precession and
planetary orbits in general relativity is to use geodesic deviation equations
of first and high-orders, proposed by Kerner et.al. Using higher-order geodesic
deviation approach, we generalize the calculation of orbital precession and the
elliptica... | [
{
"created": "Sun, 2 Jun 2019 04:59:43 GMT",
"version": "v1"
}
] | 2019-07-16 | [
[
"Heydari-Fard",
"Mohaddese",
""
],
[
"Heydari-Fard",
"Malihe",
""
],
[
"Sepangi",
"Hamid Reza",
""
]
] | A novel approximation method in studying the perihelion precession and planetary orbits in general relativity is to use geodesic deviation equations of first and high-orders, proposed by Kerner et.al. Using higher-order geodesic deviation approach, we generalize the calculation of orbital precession and the elliptical ... |
2004.08403 | Martin Pernot-Borr\`as | Martin Pernot-Borr\`as, Joel Berg\'e, Philippe Brax, Jean-Philippe
Uzan | Fifth force induced by a chameleon field on nested cylinders | Submitted to Phys. Rev. D | Phys. Rev. D 101, 124056 (2020) | 10.1103/PhysRevD.101.124056 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article investigates the properties of a scalar fifth force that arises
in a scalar tensor-theory with a chameleon screening mechanism in the context
of gravity space missions like the MICROSCOPE experiment. In such an
experiment, the propagation of the chameleon field inside the nested cylinders
of the experime... | [
{
"created": "Fri, 17 Apr 2020 18:00:11 GMT",
"version": "v1"
}
] | 2020-07-01 | [
[
"Pernot-Borràs",
"Martin",
""
],
[
"Bergé",
"Joel",
""
],
[
"Brax",
"Philippe",
""
],
[
"Uzan",
"Jean-Philippe",
""
]
] | This article investigates the properties of a scalar fifth force that arises in a scalar tensor-theory with a chameleon screening mechanism in the context of gravity space missions like the MICROSCOPE experiment. In such an experiment, the propagation of the chameleon field inside the nested cylinders of the experiment... |
2403.19392 | Yizhi Zhan | Hengyu Xu, Yizhi Zhan and Shao-Jun Zhang | Tachyonic instability and spontaneous scalarization in parameterized
Schwarzschild-like black holes | 19 pages,10 figures,published version | Eur. Phys. J. C (2024) 84:617 | 10.1140/epjc/s10052-024-12968-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the phenomenon of spontaneous scalarization in parameterized
Schwarzschild-like black holes. Two metrics are considered, the
Konoplya-Zhidenko metric and the Johannsen-Psaltis metric. While these metrics
can mimic the Schwarzschild black hole well in the weak-field regime, they have
deformed geometries in th... | [
{
"created": "Thu, 28 Mar 2024 13:06:07 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Jun 2024 06:18:14 GMT",
"version": "v2"
}
] | 2024-06-21 | [
[
"Xu",
"Hengyu",
""
],
[
"Zhan",
"Yizhi",
""
],
[
"Zhang",
"Shao-Jun",
""
]
] | We study the phenomenon of spontaneous scalarization in parameterized Schwarzschild-like black holes. Two metrics are considered, the Konoplya-Zhidenko metric and the Johannsen-Psaltis metric. While these metrics can mimic the Schwarzschild black hole well in the weak-field regime, they have deformed geometries in the ... |
1801.01591 | Mauricio Cataldo MC | Mauricio Cataldo and Norman Cruz | The Hubble IR cutoff in holographic ellipsoidal cosmologies | To be published in EPJC, 10 pages, 2 figures | null | 10.1140/epjc/s10052-017-5508-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that for spatially flat FRW cosmologies, the holographic
dark energy disfavours the Hubble parameter as a candidate for the IR cutoff.
For overcoming this problem, we explore the use of this cutoff in holographic
ellipsoidal cosmological models, and derive the general ellipsoidal metric
induced by a ... | [
{
"created": "Fri, 5 Jan 2018 00:40:21 GMT",
"version": "v1"
}
] | 2018-02-14 | [
[
"Cataldo",
"Mauricio",
""
],
[
"Cruz",
"Norman",
""
]
] | It is well known that for spatially flat FRW cosmologies, the holographic dark energy disfavours the Hubble parameter as a candidate for the IR cutoff. For overcoming this problem, we explore the use of this cutoff in holographic ellipsoidal cosmological models, and derive the general ellipsoidal metric induced by a su... |
2303.16815 | Celia Escamilla-Rivera | Laura L. Parrilla and Celia Escamilla-Rivera | Chameleon perfect scalar field as a geometric correction in $f(R)$
gravity | 9 pages. Contribution to "Gravity, Cosmology and Astrophysics - A
Journey of Exploration and Discovery with Female Pioneers". Springer Nature | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work, we derive the analytical form for a $f(R)$ model that describes
a perfect scalar field $\phi$ by assuming the existence of a chameleon
mechanism. Based on four statements, at the background and perturbative level,
it is possible to relate the extra terms from this theory as a geometrical
perfect fluid t... | [
{
"created": "Wed, 29 Mar 2023 16:05:32 GMT",
"version": "v1"
}
] | 2023-03-30 | [
[
"Parrilla",
"Laura L.",
""
],
[
"Escamilla-Rivera",
"Celia",
""
]
] | In this work, we derive the analytical form for a $f(R)$ model that describes a perfect scalar field $\phi$ by assuming the existence of a chameleon mechanism. Based on four statements, at the background and perturbative level, it is possible to relate the extra terms from this theory as a geometrical perfect fluid ter... |
gr-qc/0004079 | Atsushi Higuchi | A. Higuchi and S.S. Kouris | Large-distance behaviour of the graviton two-point function in de Sitter
spacetime | 19 pages, no figures, misprints and minor errors corrected | Class.Quant.Grav. 17 (2000) 3077-3090 | 10.1088/0264-9381/17/15/316 | null | gr-qc hep-th | null | It is known that the graviton two-point function for the de Sitter invariant
"Euclidean" vacuum in a physical gauge grows logarithmically with distance in
spatially-flat de Sitter spacetime. We show that this logarithmic behaviour is
a gauge artifact by explicitly demonstrating that the same behaviour can be
reproduc... | [
{
"created": "Thu, 27 Apr 2000 20:09:02 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Jul 2000 16:55:54 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Higuchi",
"A.",
""
],
[
"Kouris",
"S. S.",
""
]
] | It is known that the graviton two-point function for the de Sitter invariant "Euclidean" vacuum in a physical gauge grows logarithmically with distance in spatially-flat de Sitter spacetime. We show that this logarithmic behaviour is a gauge artifact by explicitly demonstrating that the same behaviour can be reproduced... |
2101.12248 | LSC P&P Committee | The LIGO Scientific Collaboration, the Virgo Collaboration, and the
KAGRA Collaboration: R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K.
Ackley, A. Adams, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, D.
Agarwal, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A.
Ain, P. Ajith, T. Akutsu... | Constraints on cosmic strings using data from the third Advanced
LIGO-Virgo observing run | 20 pages, 10 figures | Phys. Rev. Lett. 126, 241102 (2021) | 10.1103/PhysRevLett.126.241102 | LIGO-P2000506 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We search for gravitational-wave signals produced by cosmic strings in the
Advanced LIGO and Virgo full O3 data set. Search results are presented for
gravitational waves produced by cosmic string loop features such as cusps,
kinks and, for the first time, kink-kink collisions.cA template-based search
for short-durati... | [
{
"created": "Thu, 28 Jan 2021 19:35:49 GMT",
"version": "v1"
}
] | 2021-06-23 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"the KAGRA Collaboration",
"",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Abraham",
"S.",
""
],
[
"Acernese",... | We search for gravitational-wave signals produced by cosmic strings in the Advanced LIGO and Virgo full O3 data set. Search results are presented for gravitational waves produced by cosmic string loop features such as cusps, kinks and, for the first time, kink-kink collisions.cA template-based search for short-duration... |
2207.05858 | Siddarth Ajith | Siddarth Ajith, Kent Yagi, Nicol\'as Yunes | I-Love-Q in Ho\v{r}ava-Lifshitz Gravity | 18 pages. Added a new Appendix, added additional explanation to
Sects. II and III, and added a small clarification to Sect. V, no change to
main results | null | 10.1103/PhysRevD.106.124002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Ho\v{r}ava-Lifshitz gravity is an alternative theory to general relativity
which breaks Lorentz invariance in order to achieve an ultraviolet complete and
power-counting renormalizable theory of gravity. In the low energy limit,
Ho\v{r}ava-Lifshitz gravity coincides with a vector-tensor theory known as
khronometric g... | [
{
"created": "Tue, 12 Jul 2022 21:46:53 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Dec 2022 01:00:25 GMT",
"version": "v2"
}
] | 2022-12-13 | [
[
"Ajith",
"Siddarth",
""
],
[
"Yagi",
"Kent",
""
],
[
"Yunes",
"Nicolás",
""
]
] | Ho\v{r}ava-Lifshitz gravity is an alternative theory to general relativity which breaks Lorentz invariance in order to achieve an ultraviolet complete and power-counting renormalizable theory of gravity. In the low energy limit, Ho\v{r}ava-Lifshitz gravity coincides with a vector-tensor theory known as khronometric gra... |
1402.7288 | Mauricio Bellini | Jes\'us Mart\'in Romero (IFIMAR - UNMdP and CONICET), Mauricio Bellini
(IFIMAR - UNMdP and CONICET) | Gravitomagnetic currents in the inflationary universe from WIMT | Version to be published in European Phys. J. C | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the Weitzenb\"ock representation of a Riemann-flat 5D spacetime, we
study the possible existence of primordial gravito-magnetic currents from
Gravito-electromagnetic Inflation (GEMI). We found that these currents decrease
exponentially in the Weitzenb\"ock representation, but they are null in a
Levi-Civita repr... | [
{
"created": "Fri, 28 Feb 2014 15:52:12 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Apr 2014 19:59:08 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Aug 2014 15:14:16 GMT",
"version": "v3"
},
{
"created": "Fri, 5 Sep 2014 20:22:12 GMT",
"version": "v4"
}
] | 2014-09-09 | [
[
"Romero",
"Jesús Martín",
"",
"IFIMAR - UNMdP and CONICET"
],
[
"Bellini",
"Mauricio",
"",
"IFIMAR - UNMdP and CONICET"
]
] | Using the Weitzenb\"ock representation of a Riemann-flat 5D spacetime, we study the possible existence of primordial gravito-magnetic currents from Gravito-electromagnetic Inflation (GEMI). We found that these currents decrease exponentially in the Weitzenb\"ock representation, but they are null in a Levi-Civita repres... |
gr-qc/0607038 | Ioannis Raptis | Ioannis Raptis | A Dodecalogue of Basic Didactics from Applications of Abstract
Differential Geometry to Quantum Gravity | 16 pages, preliminary version | Int.J.Theor.Phys.46:3009-3021,2007 | 10.1007/s10773-007-9416-0 | null | gr-qc | null | We summarize the twelve most important in our view novel concepts that have
arisen, based on results that have been obtained, from various applications of
Abstract Differential Geometry (ADG) to Quantum Gravity (QG). The present
document may be used as a concise, yet informal, discursive and peripatetic
conceptual gu... | [
{
"created": "Mon, 10 Jul 2006 14:38:35 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Raptis",
"Ioannis",
""
]
] | We summarize the twelve most important in our view novel concepts that have arisen, based on results that have been obtained, from various applications of Abstract Differential Geometry (ADG) to Quantum Gravity (QG). The present document may be used as a concise, yet informal, discursive and peripatetic conceptual guid... |
gr-qc/9510055 | Andrew Chubykalo | Andrew E. Chubykalo (EFUAZ, Zacatecas) | Principle of Mach, the Equivalence Principle and concepts of inertial
mass | ReVTeX file, 9pp., no figures | Hadronic J. 19 (1996) 607 | null | EFUAZ FT-95-21-REV | gr-qc | null | A study of kinematics of a 2-body system is used to show that the Mach
principle, previously rejected by general relativity, can still serve as an
alternative to the concept of absolute space, if one takes into account that
the background of distant stars (galaxies) determines {\it both} the inertial
and the gravitat... | [
{
"created": "Fri, 27 Oct 1995 03:14:05 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Aug 1996 20:17:52 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Chubykalo",
"Andrew E.",
"",
"EFUAZ, Zacatecas"
]
] | A study of kinematics of a 2-body system is used to show that the Mach principle, previously rejected by general relativity, can still serve as an alternative to the concept of absolute space, if one takes into account that the background of distant stars (galaxies) determines {\it both} the inertial and the gravitatio... |
gr-qc/0303046 | Vladimir Mashkevich | Vladimir S. Mashkevich (CUNY) | Cosmological Quantum Jump Dynamics II. The Retrodictive Universe | 8 pages, LATEX 2e | null | null | null | gr-qc quant-ph | null | This paper is a continuation of the paper gr-qc/0203045 and is devoted to the
problem of the arrow of time. A deterministic past-directed dynamics is
constructed, which results in the retrodictive universe. A future-directed
dynamics of the latter is indeterministic and reproduces standard probabilistic
quantum dynam... | [
{
"created": "Wed, 12 Mar 2003 03:37:19 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mashkevich",
"Vladimir S.",
"",
"CUNY"
]
] | This paper is a continuation of the paper gr-qc/0203045 and is devoted to the problem of the arrow of time. A deterministic past-directed dynamics is constructed, which results in the retrodictive universe. A future-directed dynamics of the latter is indeterministic and reproduces standard probabilistic quantum dynamic... |
2010.12387 | Sajal Mukherjee | Sayak Datta and Sajal Mukherjee | Possible connection between the reflection symmetry and existence of
equatorial circular orbit | 9 pages, 2 figures | Phys. Rev. D 103, 104032 (2021) | 10.1103/PhysRevD.103.104032 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a viable connection between the circular-equatorial orbits and
reflection symmetry across the equatorial plane of a vacuum stationary
axis-symmetric spacetime in general relativity. The behavior of the circular
equatorial orbits in the direction perpendicular to the equatorial plane is
studied, and different... | [
{
"created": "Fri, 23 Oct 2020 13:23:05 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Jun 2021 16:16:59 GMT",
"version": "v2"
}
] | 2021-07-29 | [
[
"Datta",
"Sayak",
""
],
[
"Mukherjee",
"Sajal",
""
]
] | We study a viable connection between the circular-equatorial orbits and reflection symmetry across the equatorial plane of a vacuum stationary axis-symmetric spacetime in general relativity. The behavior of the circular equatorial orbits in the direction perpendicular to the equatorial plane is studied, and different o... |
0910.5763 | Olivier Sarbach | Dario Nunez and Olivier Sarbach | Boundary conditions for the Baumgarte-Shapiro-Shibata-Nakamura
formulation of Einstein's field equations | 20 pages, no figures, small corrections in order to match published
version | Phys.Rev.D81:044011,2010 | 10.1103/PhysRevD.81.044011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the initial-boundary value problem for the
Baumgarte-Shapiro-Shibata-Nakamura evolution system of Einstein's field
equations which has been used extensively in numerical simulations of binary
black holes and neutron stars. We specify nine boundary conditions for this
system with the following properties: (... | [
{
"created": "Fri, 30 Oct 2009 00:59:20 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Feb 2010 15:21:57 GMT",
"version": "v2"
}
] | 2010-04-06 | [
[
"Nunez",
"Dario",
""
],
[
"Sarbach",
"Olivier",
""
]
] | We discuss the initial-boundary value problem for the Baumgarte-Shapiro-Shibata-Nakamura evolution system of Einstein's field equations which has been used extensively in numerical simulations of binary black holes and neutron stars. We specify nine boundary conditions for this system with the following properties: (i)... |
2401.04584 | Mirzabek Alloqulov | Ahmad Al-Badawi, Mirzabek Alloqulov, Sanjar Shaymatov and Bobomurat
Ahmedov | Shadows and weak gravitational lensing by the black hole in
Einstein-Maxwell-scalar theory | 9 pages, one table, 9 captioned figures, Accepted for publication in
Chinese Physics C | null | 10.1088/1674-1137/ad5a70 | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | In this paper, we investigate the optical properties of a charged black hole
in Einstein-Maxwell-scalar (EMS) theory. We evaluate the shadow cast by the
black hole and obtain analytical solutions for both the radius of the photon
sphere and the shadow radius. We observe that the black hole parameters
$\gamma$ and $\b... | [
{
"created": "Tue, 9 Jan 2024 14:41:36 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Jan 2024 06:52:57 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Mar 2024 13:09:21 GMT",
"version": "v3"
},
{
"created": "Tue, 12 Mar 2024 05:42:09 GMT",
"version": "v4"
},
{
"cr... | 2024-07-29 | [
[
"Al-Badawi",
"Ahmad",
""
],
[
"Alloqulov",
"Mirzabek",
""
],
[
"Shaymatov",
"Sanjar",
""
],
[
"Ahmedov",
"Bobomurat",
""
]
] | In this paper, we investigate the optical properties of a charged black hole in Einstein-Maxwell-scalar (EMS) theory. We evaluate the shadow cast by the black hole and obtain analytical solutions for both the radius of the photon sphere and the shadow radius. We observe that the black hole parameters $\gamma$ and $\bet... |
gr-qc/0002043 | Scott A. Hughes | Scott A. Hughes | Computing radiation from Kerr black holes: Generalization of the
Sasaki-Nakamura equation | 10 pages, no figures, to appear in Phys. Rev. D. Present version
updates the references, fixes some typos, and corrects some of the
Introductory text | Phys.Rev.D62:044029,2000; Erratum-ibid.D67:089902,2003 | 10.1103/PhysRevD.62.044029 10.1103/PhysRevD.67.089902 | null | gr-qc astro-ph | null | As shown by Teukolsky, the master equation governing the propagation of weak
radiation in a black hole spacetime can be separated into four ordinary
differential equations, one for each spacetime coordinate. (``Weak'' means the
radiation's amplitude is small enough that its own gravitation may be
neglected.) Unfortun... | [
{
"created": "Fri, 11 Feb 2000 22:22:38 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Apr 2000 23:57:44 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Hughes",
"Scott A.",
""
]
] | As shown by Teukolsky, the master equation governing the propagation of weak radiation in a black hole spacetime can be separated into four ordinary differential equations, one for each spacetime coordinate. (``Weak'' means the radiation's amplitude is small enough that its own gravitation may be neglected.) Unfortunat... |
1206.0607 | Marc Mars | Marc Mars and Martin Reiris | Global and uniqueness properties of stationary and static spacetimes
with outer trapped surfaces | 38 pages, 2 figures, Latex | null | 10.1007/s00220-013-1739-5 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Global properties of maximal future Cauchy developments of stationary,
m-dimensional asymptotically flat initial data with an outer trapped boundary
are analyzed. We prove that, whenever the matter model is well posed and
satisfies the null energy condition, the future Cauchy development of the data
is a black hole s... | [
{
"created": "Mon, 4 Jun 2012 13:06:46 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Mars",
"Marc",
""
],
[
"Reiris",
"Martin",
""
]
] | Global properties of maximal future Cauchy developments of stationary, m-dimensional asymptotically flat initial data with an outer trapped boundary are analyzed. We prove that, whenever the matter model is well posed and satisfies the null energy condition, the future Cauchy development of the data is a black hole spa... |
2311.17873 | Conner Dailey | Yu Li, Ruolin Liu, Conner Dailey, Niayesh Afshordi | Detecting cosmological scalar fields using orbital networks of quantum
sensors | Comments are welcome. 7 pages, 2 figures | null | null | null | gr-qc astro-ph.CO astro-ph.IM hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this Letter, we propose to detect the interaction of a hypothetical
coherently evolving cosmological scalar field with an orbital network of
quantum sensors, focusing on the GPS satellite network as a test example.
Cosmological scenarios, such as a scalar-tensor theory for dark energy or the
axi-Higgs model, sugge... | [
{
"created": "Wed, 29 Nov 2023 18:19:59 GMT",
"version": "v1"
}
] | 2023-12-01 | [
[
"Li",
"Yu",
""
],
[
"Liu",
"Ruolin",
""
],
[
"Dailey",
"Conner",
""
],
[
"Afshordi",
"Niayesh",
""
]
] | In this Letter, we propose to detect the interaction of a hypothetical coherently evolving cosmological scalar field with an orbital network of quantum sensors, focusing on the GPS satellite network as a test example. Cosmological scenarios, such as a scalar-tensor theory for dark energy or the axi-Higgs model, suggest... |
1301.2334 | Prado Martin-Moruno | Prado Martin-Moruno (Victoria University of Wellington), Matt Visser
(Victoria University of Wellington) | Is there vacuum when there is mass? Vacuum and non-vacuum solutions for
massive gravity | V1: 9 pages. V2: 10 pages, 5 references added. V3: 11 pages, some
discussion added. This version accepted for publication in Classical and
Quantum Gravity | Class.Quant.Grav. 30 (2013) 155021 | 10.1088/0264-9381/30/15/155021 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Massive gravity is a theory which has a tremendous amount of freedom to
describe different cosmologies; but at the same time the various solutions one
encounters must fulfill some rather nontrivial constraints. Most of the freedom
comes not from the Lagrangian, which contains only a small number of free
parameters (t... | [
{
"created": "Thu, 10 Jan 2013 21:26:41 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Jan 2013 23:28:24 GMT",
"version": "v2"
},
{
"created": "Thu, 27 Jun 2013 23:08:49 GMT",
"version": "v3"
}
] | 2013-08-21 | [
[
"Martin-Moruno",
"Prado",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | Massive gravity is a theory which has a tremendous amount of freedom to describe different cosmologies; but at the same time the various solutions one encounters must fulfill some rather nontrivial constraints. Most of the freedom comes not from the Lagrangian, which contains only a small number of free parameters (typ... |
gr-qc/9211011 | Desmond Mc Manus | Shane J. Hughes, Des J. Mc Manus, and Michel A. Vandyck | Weak-Field Gravity of Circular Cosmic Strings | 15 pages | Phys.Rev. D47 (1993) 468-473 | 10.1103/PhysRevD.47.468 | DIAS-STP 92-24 | gr-qc | null | A weak-field solution of Einstein's equations is constructed. It is generated
by a circular cosmic string externally supported against collapse. The solution
exhibits a conical singularity, and the corresponding deficit angle is the same
as for a straight string of the same linear energy density. This confirms the
de... | [
{
"created": "Mon, 9 Nov 1992 16:21:40 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Hughes",
"Shane J.",
""
],
[
"Manus",
"Des J. Mc",
""
],
[
"Vandyck",
"Michel A.",
""
]
] | A weak-field solution of Einstein's equations is constructed. It is generated by a circular cosmic string externally supported against collapse. The solution exhibits a conical singularity, and the corresponding deficit angle is the same as for a straight string of the same linear energy density. This confirms the defi... |
gr-qc/0010013 | Fatimah Shojai | Ali Shojai | Quantum, Gravity, and Geometry | 25 pages | Int.J.Mod.Phys. A15 (2000) 1757-1771 | 10.1142/S0217751X0000077X | null | gr-qc | null | Recently, it is shown that, the quantum effects of matter are well described
by the conformal degree of freedom of the space-time metric. On the other hand,
it is a wellknown fact that according to Einstein's gravity theory, gravity and
geometry are interconnected. In the new quantum gravity theory, matter quantum
ef... | [
{
"created": "Wed, 4 Oct 2000 10:53:30 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Shojai",
"Ali",
""
]
] | Recently, it is shown that, the quantum effects of matter are well described by the conformal degree of freedom of the space-time metric. On the other hand, it is a wellknown fact that according to Einstein's gravity theory, gravity and geometry are interconnected. In the new quantum gravity theory, matter quantum effe... |
2203.11846 | Daniel Carney | Daniel Carney, Yanbei Chen, Andrew Geraci, Holger M\"uller, Cristian
D. Panda, Philip C. E. Stamp, and Jacob M. Taylor | Snowmass 2021 White Paper: Tabletop experiments for infrared quantum
gravity | Short contribution to Snowmass 2021. 5 pages, 1 figure. v2: typo
fixed | null | null | null | gr-qc hep-ph quant-ph | http://creativecommons.org/licenses/by/4.0/ | Progress in the quantum readout and control of mechanical devices from single
atoms to large masses may enable a first generation of experiments probing the
gravitational interaction in the quantum regime, conceivably within the next
decade. In this Snowmass whitepaper, we briefly outline the possibilities and
challe... | [
{
"created": "Tue, 22 Mar 2022 16:23:09 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Mar 2022 19:55:59 GMT",
"version": "v2"
}
] | 2022-03-25 | [
[
"Carney",
"Daniel",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Geraci",
"Andrew",
""
],
[
"Müller",
"Holger",
""
],
[
"Panda",
"Cristian D.",
""
],
[
"Stamp",
"Philip C. E.",
""
],
[
"Taylor",
"Jacob M.",
""
]
] | Progress in the quantum readout and control of mechanical devices from single atoms to large masses may enable a first generation of experiments probing the gravitational interaction in the quantum regime, conceivably within the next decade. In this Snowmass whitepaper, we briefly outline the possibilities and challeng... |
1605.02648 | Abhay Ashtekar | Abhay Ashtekar | Symmetry Reduced Loop Quantum Gravity: A Bird's Eye View | 25 pages, 2 figures. References updated; typos corrected. The
abstract is expanded for readers who may not see the special volume of the
journal in which this article will appear | Int j Mod Phys 25, 1642010 (2016) | 10.1142/S0218271816420104 | IGC16-05/1 | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is a brief overview of the current status of symmetry reduced models in
Loop Quantum Gravity (LQG), focussing on the very early universe. Over the last
3 years or so the subject has matured sufficiently to make direct contact with
observations of the Cosmic Microwave Background (CMB). In particular, thanks to
an... | [
{
"created": "Mon, 9 May 2016 16:26:29 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Jun 2016 01:23:53 GMT",
"version": "v2"
}
] | 2017-06-21 | [
[
"Ashtekar",
"Abhay",
""
]
] | This is a brief overview of the current status of symmetry reduced models in Loop Quantum Gravity (LQG), focussing on the very early universe. Over the last 3 years or so the subject has matured sufficiently to make direct contact with observations of the Cosmic Microwave Background (CMB). In particular, thanks to an u... |
gr-qc/0412051 | Mark D. Roberts | Mark D. Roberts | Interacting with the fifth dimension | 10 pages | null | null | null | gr-qc astro-ph hep-th | null | Some new five dimensional minimal scalar-Einstein exact solutions are
presented. These new solutions are tested against various criteria used to
measure interaction with the fifth dimension.
| [
{
"created": "Sat, 11 Dec 2004 16:03:04 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Roberts",
"Mark D.",
""
]
] | Some new five dimensional minimal scalar-Einstein exact solutions are presented. These new solutions are tested against various criteria used to measure interaction with the fifth dimension. |
2309.07816 | Hossein Mohseni Sadjadi | H. Mohseni Sadjadi | Scalar-Gauss-Bonnet model, the coincidence problem and the gravitational
wave speed | 20 pages, 7 figures, major revision, accepted for publication in
Physics Letters B | Phys. Lett. B 850, 138508 (2024) | 10.1016/j.physletb.2024.138508 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a dynamical dark energy model wherein quintessence interacts
with both the Gauss-Bonnet invariant and dark matter. Initially, the
Gauss-Bonnet invariant stabilizes the quintessence at a fixed point, resulting
in a negligible density of dark energy. Subsequently, the conformal coupling to
dark matter trig... | [
{
"created": "Thu, 14 Sep 2023 16:10:55 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jan 2024 05:40:35 GMT",
"version": "v2"
}
] | 2024-05-01 | [
[
"Sadjadi",
"H. Mohseni",
""
]
] | We introduce a dynamical dark energy model wherein quintessence interacts with both the Gauss-Bonnet invariant and dark matter. Initially, the Gauss-Bonnet invariant stabilizes the quintessence at a fixed point, resulting in a negligible density of dark energy. Subsequently, the conformal coupling to dark matter trigge... |
1811.05332 | C. S. Unnikrishnan | C. S. Unnikrishnan and George T. Gillies | Gravitational waves at their own gravitational speed | 7 pages. Honorable mention in 2018 Gravity Research Foundation essay
competition | null | 10.1142/S0218271818470156 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves propagate at the speed of light in general relativity,
because of its special relativistic basis. However, light propagation is linked
to the electromagnetic phenomena, with the permittivity and permeability
constants as the determining factors. Is there a deeper reason why waves in a
geometric th... | [
{
"created": "Mon, 12 Nov 2018 10:01:44 GMT",
"version": "v1"
}
] | 2018-11-14 | [
[
"Unnikrishnan",
"C. S.",
""
],
[
"Gillies",
"George T.",
""
]
] | Gravitational waves propagate at the speed of light in general relativity, because of its special relativistic basis. However, light propagation is linked to the electromagnetic phenomena, with the permittivity and permeability constants as the determining factors. Is there a deeper reason why waves in a geometric theo... |
2303.16973 | Pardyumn Kumar Sahoo | Lakhan V. Jaybhaye, Raja Solanki, Sanjay Mandal, Pradyumn Kumar Sahoo | Constraining viscous dark energy equation of state in $f(R,L_m)$ gravity | Universe published version | Universe 9(4) (2023) 163 | 10.3390/universe9040163 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this article, we attempt to describe cosmic late-time acceleration of the
universe in the framework of $f(R,L_m)$ gravity by using an effective equation
of state when the account is taken of bulk viscosity. We presume a non-linear
$f(R,L_m)$ functional form, specifically, $f(R,L_m)=\frac{R}{2}+L_m^\alpha $,
where ... | [
{
"created": "Tue, 28 Mar 2023 09:18:58 GMT",
"version": "v1"
}
] | 2023-03-31 | [
[
"Jaybhaye",
"Lakhan V.",
""
],
[
"Solanki",
"Raja",
""
],
[
"Mandal",
"Sanjay",
""
],
[
"Sahoo",
"Pradyumn Kumar",
""
]
] | In this article, we attempt to describe cosmic late-time acceleration of the universe in the framework of $f(R,L_m)$ gravity by using an effective equation of state when the account is taken of bulk viscosity. We presume a non-linear $f(R,L_m)$ functional form, specifically, $f(R,L_m)=\frac{R}{2}+L_m^\alpha $, where $\... |
gr-qc/9903023 | Marco Godina | Marco Godina, Paolo Matteucci, Lorenzo Fatibene, Mauro Francaviglia | Two-spinor Formulation of First Order Gravity coupled to Dirac Fields | 16 pages, Plain TEX | Gen.Rel.Grav.32:145-160,2000 | 10.1023/A:1001804718086 | null | gr-qc | null | Two-spinor formalism for Einstein Lagrangian is developed. The gravitational
field is regarded as a composite object derived from soldering forms. Our
formalism is geometrically and globally well-defined and may be used in
virtually any 4m-dimensional manifold with arbitrary signature as well as
without any stringent... | [
{
"created": "Fri, 5 Mar 1999 21:45:00 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Godina",
"Marco",
""
],
[
"Matteucci",
"Paolo",
""
],
[
"Fatibene",
"Lorenzo",
""
],
[
"Francaviglia",
"Mauro",
""
]
] | Two-spinor formalism for Einstein Lagrangian is developed. The gravitational field is regarded as a composite object derived from soldering forms. Our formalism is geometrically and globally well-defined and may be used in virtually any 4m-dimensional manifold with arbitrary signature as well as without any stringent t... |
gr-qc/0401097 | Enrique Alvarez | Enrique Alvarez | The infinite curvature limit of AdS/CFT | 10 pages. Contribution to the proceedings of the 2003 ``Peyresq
Physics 8" meeting | Int.J.Theor.Phys. 43 (2004) 905-912 | 10.1023/B:IJTP.0000048179.43068.9d | IFT-UAM/CSIC-04-02 | gr-qc | null | Some kinematical speculations on the infinite curvature limit of the
conjectured duality of Maldacena between ten-dimensional strings living in
$AdS_5\times S_5$ and a ordinary four-dimensional quantum field theory, namely
${\cal{N}}=4$ super Yang-Mills with gauge group SU(N) are given.
| [
{
"created": "Fri, 23 Jan 2004 14:59:35 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Alvarez",
"Enrique",
""
]
] | Some kinematical speculations on the infinite curvature limit of the conjectured duality of Maldacena between ten-dimensional strings living in $AdS_5\times S_5$ and a ordinary four-dimensional quantum field theory, namely ${\cal{N}}=4$ super Yang-Mills with gauge group SU(N) are given. |
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