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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0110026 | Matthias Arnsdorf | Matthias Arnsdorf | Relating Covariant and Canonical Approaches to Triangulated Models of
Quantum Gravity | 28 pages, 10 figures | Class.Quant.Grav. 19 (2002) 1065-1092 | 10.1088/0264-9381/19/6/304 | null | gr-qc | null | In this paper explore the relation between covariant and canonical approaches
to quantum gravity and $BF$ theory. We will focus on the dynamical
triangulation and spin-foam models, which have in common that they can be
defined in terms of sums over space-time triangulations. Our aim is to show how
we can recover thes... | [
{
"created": "Thu, 4 Oct 2001 16:28:30 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Arnsdorf",
"Matthias",
""
]
] | In this paper explore the relation between covariant and canonical approaches to quantum gravity and $BF$ theory. We will focus on the dynamical triangulation and spin-foam models, which have in common that they can be defined in terms of sums over space-time triangulations. Our aim is to show how we can recover these ... |
1905.11105 | Xin Wu | Dan Li, Yu Wang, Chen Deng and Xin Wu | The equations of motion for consistency of a post-Newtonian Lagrangian
formulation | 14 pages, 8 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Equations of motion for a general relativistic post-Newtonian Lagrangian
approach mainly refer to acceleration equations, i.e. differential equations of
velocities. They are directly from the Euler-Lagrangian equations, and usually
have higher-order terms truncated when they remain at the same post-Newtonian
order of... | [
{
"created": "Mon, 27 May 2019 10:22:07 GMT",
"version": "v1"
}
] | 2019-05-28 | [
[
"Li",
"Dan",
""
],
[
"Wang",
"Yu",
""
],
[
"Deng",
"Chen",
""
],
[
"Wu",
"Xin",
""
]
] | Equations of motion for a general relativistic post-Newtonian Lagrangian approach mainly refer to acceleration equations, i.e. differential equations of velocities. They are directly from the Euler-Lagrangian equations, and usually have higher-order terms truncated when they remain at the same post-Newtonian order of t... |
1205.1063 | Miguel Zilhao | Miguel Zilh\~ao, Vitor Cardoso, Carlos Herdeiro, Luis Lehner, Ulrich
Sperhake | Collisions of charged black holes | 15 pages, 8 figures; v2: improved one plot and other minor changes.
matches published version in PRD | Phys. Rev. D 85, 124062 (2012) | 10.1103/PhysRevD.85.124062 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform fully non-linear numerical simulations of charged-black-hole
collisions, described by the Einstein-Maxwell equations, and contrast the
results against analytic expectations. We focus on head-on collisions of
non-spinning black holes, starting from rest and with the same charge to mass
ratio, Q/M. The addit... | [
{
"created": "Fri, 4 May 2012 20:02:12 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Jul 2012 15:40:08 GMT",
"version": "v2"
}
] | 2012-07-06 | [
[
"Zilhão",
"Miguel",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Herdeiro",
"Carlos",
""
],
[
"Lehner",
"Luis",
""
],
[
"Sperhake",
"Ulrich",
""
]
] | We perform fully non-linear numerical simulations of charged-black-hole collisions, described by the Einstein-Maxwell equations, and contrast the results against analytic expectations. We focus on head-on collisions of non-spinning black holes, starting from rest and with the same charge to mass ratio, Q/M. The additio... |
1111.5124 | Mohsen Fathi | Mohsen Fathi | A Dynamical Approach to the Exterior Geometry of a Perfect Fluid as a
Relativistic Star | 16 pages, 43 figures | Chin. Phys. C, Vol. 37, No. 2 (2013) 025101 | null | null | gr-qc physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we assume that a cold charged perfect fluid is constructing
a spherical relativistic star. Our purpose is the investigation of the
dynamical properties of its exterior geometry, through simulating the geodesic
motion of a charged test particle, while moving on the star.
| [
{
"created": "Tue, 22 Nov 2011 08:46:50 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Mar 2012 18:43:54 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Jun 2012 10:53:42 GMT",
"version": "v3"
},
{
"created": "Wed, 26 Dec 2012 11:10:38 GMT",
"version": "v4"
},
{
"c... | 2015-03-19 | [
[
"Fathi",
"Mohsen",
""
]
] | In this article, we assume that a cold charged perfect fluid is constructing a spherical relativistic star. Our purpose is the investigation of the dynamical properties of its exterior geometry, through simulating the geodesic motion of a charged test particle, while moving on the star. |
gr-qc/0012043 | Jonathan Thornburg | J. Thornburg, Ch. Lechner, M. Purrer, P. C. Aichelburg, and S. Husa | Episodic Self-Similarity in Critical Gravitational Collapse | LaTeX, 2 pages including 1 postscript figure; uses World Scientific
style file ws-p9-75x6-50.cls (enclosed); to appear in Proceedings of the 9th
Marcel Grossman Meeting; talk presented 5 July 2000 in MG9 session SG1a
(Self-Gravitating Systems) | null | null | UWThPh-2000-53 | gr-qc | null | We report on a new behavior found in numerical simulations of spherically
symmetric gravitational collapse in self-gravitating SU(2) sigma models at
intermediate gravitational coupling constants: The critical solution (between
black hole formation and dispersion) closely approximates the continuously
self-similar (CS... | [
{
"created": "Tue, 12 Dec 2000 12:14:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Thornburg",
"J.",
""
],
[
"Lechner",
"Ch.",
""
],
[
"Purrer",
"M.",
""
],
[
"Aichelburg",
"P. C.",
""
],
[
"Husa",
"S.",
""
]
] | We report on a new behavior found in numerical simulations of spherically symmetric gravitational collapse in self-gravitating SU(2) sigma models at intermediate gravitational coupling constants: The critical solution (between black hole formation and dispersion) closely approximates the continuously self-similar (CSS)... |
1001.0411 | Y. Jack Ng | Y. Jack Ng | Holographic Quantum Foam | 5 pages, 1 figure, talk given at MG12 (Paris, July 2009), Loops 09
(Beijing, August 09), and OCPA 6 (Lanzhou, China, August 09) | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Due to quantum fluctuations, probed at small scales, spacetime is very
complicated -- something akin in complexity to a turbulent froth which the late
John Wheeler dubbed quantum foam, aka spacetime foam. Our recent work suggests
that (1) we may be close to being able to detect quantum foam with
extragalactic sources... | [
{
"created": "Sun, 3 Jan 2010 21:23:38 GMT",
"version": "v1"
}
] | 2010-01-05 | [
[
"Ng",
"Y. Jack",
""
]
] | Due to quantum fluctuations, probed at small scales, spacetime is very complicated -- something akin in complexity to a turbulent froth which the late John Wheeler dubbed quantum foam, aka spacetime foam. Our recent work suggests that (1) we may be close to being able to detect quantum foam with extragalactic sources o... |
1001.0725 | Emre Kahya Dr. | E. O. Kahya | A useful guide for gravitational wave observers to test modified gravity
models | 5 pages, 2 figures, 2 tables, A New section is added and some
equations were removed to avoid repetition | Phys.Lett.B701:291-295,2011 | 10.1016/j.physletb.2011.05.073 | null | gr-qc astro-ph.CO astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an extension of a previously suggested test of all modified
theories of gravity that would reproduce MOND at low accelerations. In a class
of models, called "dark matter emulators", gravitational waves and other
particles couple to different metrics. This leads to a detectable time lag
between their detect... | [
{
"created": "Tue, 5 Jan 2010 16:08:26 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Jun 2010 13:38:51 GMT",
"version": "v2"
},
{
"created": "Mon, 8 Nov 2010 11:38:44 GMT",
"version": "v3"
}
] | 2011-06-28 | [
[
"Kahya",
"E. O.",
""
]
] | We present an extension of a previously suggested test of all modified theories of gravity that would reproduce MOND at low accelerations. In a class of models, called "dark matter emulators", gravitational waves and other particles couple to different metrics. This leads to a detectable time lag between their detectio... |
2407.15231 | Oem Trivedi | Oem Trivedi | Universality of Information Thermodynamics and the Efficiency of
Information Erasure on the Cosmological Apparent Horizon | v2, title changed and some discussion added, 5 pages with no figures,
comments very welcome | null | null | null | gr-qc cond-mat.stat-mech quant-ph | http://creativecommons.org/licenses/by/4.0/ | We show that the information loss at the cosmological apparent horizon in an
expanding universe has a direct correspondence with the Landauer principle of
information dynamics. We show that the Landauer limit is satisfied in this
case, which implies that the information erasure at the cosmological apparent
horizon ha... | [
{
"created": "Sun, 21 Jul 2024 17:50:43 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Jul 2024 20:51:43 GMT",
"version": "v2"
}
] | 2024-07-25 | [
[
"Trivedi",
"Oem",
""
]
] | We show that the information loss at the cosmological apparent horizon in an expanding universe has a direct correspondence with the Landauer principle of information dynamics. We show that the Landauer limit is satisfied in this case, which implies that the information erasure at the cosmological apparent horizon happ... |
0808.0810 | Anil Zengino\u{g}lu C | Anil Zenginoglu | Hyperboloidal evolution with the Einstein equations | 10 pages; uses iop style | Class.Quant.Grav.25:195025,2008 | 10.1088/0264-9381/25/19/195025 | AEI-2008-050 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an approach to the hyperboloidal evolution problem based on the
Einstein equations written for a rescaled metric. It is shown that a conformal
scale factor can be freely prescribed a priori in terms of coordinates in a
well-posed hyperboloidal initial value problem such that the location of null
infinity ... | [
{
"created": "Wed, 6 Aug 2008 10:19:22 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Zenginoglu",
"Anil",
""
]
] | We consider an approach to the hyperboloidal evolution problem based on the Einstein equations written for a rescaled metric. It is shown that a conformal scale factor can be freely prescribed a priori in terms of coordinates in a well-posed hyperboloidal initial value problem such that the location of null infinity is... |
2308.15574 | Anzhong Wang | Hongchao Zhang, Wen-Cong Gan, Yungui Gong, Anzhong Wang | On the improved dynamics approach in loop quantum black holes | 3 figures and no tables. Version published in Commun. Theor. Phys. 76
(2024) 035401. arXiv admin note: text overlap with arXiv:2212.14535 | Commun. Theor. Phys. 76 (2024) 035401 | 10.1088/1572-9494/ad23dc | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we consider the B\"ohmer-Vandersloot (BV) model of loop
quantum black holes obtained from the improved dynamics approach. We adopt the
Saini-Singh gauge, in which it was found analytically that the BV spacetime is
geodesically complete. We show that black/white hole horizons do not exist in
this geodes... | [
{
"created": "Tue, 29 Aug 2023 19:00:49 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jan 2024 19:35:06 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Mar 2024 14:03:34 GMT",
"version": "v3"
}
] | 2024-03-08 | [
[
"Zhang",
"Hongchao",
""
],
[
"Gan",
"Wen-Cong",
""
],
[
"Gong",
"Yungui",
""
],
[
"Wang",
"Anzhong",
""
]
] | In this paper, we consider the B\"ohmer-Vandersloot (BV) model of loop quantum black holes obtained from the improved dynamics approach. We adopt the Saini-Singh gauge, in which it was found analytically that the BV spacetime is geodesically complete. We show that black/white hole horizons do not exist in this geodesic... |
gr-qc/0511118 | Romeo Brunetti | Romeo Brunetti, Giuseppe Ruzzi | Superselection Sectors and General Covariance.I | 66 pages | Commun.Math.Phys.270:69-108,2007 | 10.1007/s00220-006-0147-5 | null | gr-qc hep-th math-ph math.MP | null | This paper is devoted to the analysis of charged superselection sectors in
the framework of the locally covariant quantum field theories. We shall analize
sharply localizable charges, and use net-cohomology of J.E. Roberts as a main
tool. We show that to any 4-dimensional globally hyperbolic spacetime it is
attached ... | [
{
"created": "Mon, 21 Nov 2005 19:49:54 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Dec 2005 09:47:32 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Brunetti",
"Romeo",
""
],
[
"Ruzzi",
"Giuseppe",
""
]
] | This paper is devoted to the analysis of charged superselection sectors in the framework of the locally covariant quantum field theories. We shall analize sharply localizable charges, and use net-cohomology of J.E. Roberts as a main tool. We show that to any 4-dimensional globally hyperbolic spacetime it is attached a ... |
1908.04258 | Olesya Galkina | O. Galkina, J. C. Fabris, F. T. Falciano, and N. Pinto-Neto | Regular Bouncing Solutions, Energy Conditions and the Brans-Dicke Theory | 5 pages, 2 figures, accepted for publication in JETP Letters | null | 10.1134/S0021364019200013 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general, to avoid a singularity in cosmological models involves the
introduction of exotic kind of matter fields, for example, a scalar field with
negative energy density. In order to have a bouncing solution in classical
General Relativity, violation of the energy conditions is required. In this
work, we discuss ... | [
{
"created": "Mon, 12 Aug 2019 17:27:45 GMT",
"version": "v1"
},
{
"created": "Sat, 21 Sep 2019 19:25:59 GMT",
"version": "v2"
}
] | 2019-10-23 | [
[
"Galkina",
"O.",
""
],
[
"Fabris",
"J. C.",
""
],
[
"Falciano",
"F. T.",
""
],
[
"Pinto-Neto",
"N.",
""
]
] | In general, to avoid a singularity in cosmological models involves the introduction of exotic kind of matter fields, for example, a scalar field with negative energy density. In order to have a bouncing solution in classical General Relativity, violation of the energy conditions is required. In this work, we discuss a ... |
1305.5576 | Eloisa Bentivegna | Eloisa Bentivegna | Solving the Einstein constraints in periodic spaces with a multigrid
approach | 25 pages, 15 figures. Fixed typos, added references and software
release information | null | 10.1088/0264-9381/31/3/035004 | AEI-2013-214 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Novel applications of Numerical Relativity demand for more flexible
algorithms and tools. In this paper, I develop and test a multigrid solver,
based on the infrastructure provided by the Einstein Toolkit, for elliptic
partial differential equations on spaces with periodic boundary conditions.
This type of boundary o... | [
{
"created": "Thu, 23 May 2013 22:20:21 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Aug 2013 15:01:19 GMT",
"version": "v2"
}
] | 2015-06-16 | [
[
"Bentivegna",
"Eloisa",
""
]
] | Novel applications of Numerical Relativity demand for more flexible algorithms and tools. In this paper, I develop and test a multigrid solver, based on the infrastructure provided by the Einstein Toolkit, for elliptic partial differential equations on spaces with periodic boundary conditions. This type of boundary oft... |
gr-qc/0305090 | Yoshinori Cho | Yoshinori Cho, Kenji Sakamoto, Kiyoshi Shiraishi (Yamaguchi
University) | Non-topological soliton in three-dimensional supergravity | 10 pages, 3 eps figures, RevTeX 3.0, some explanations added | null | null | null | gr-qc | null | We construct numerical solutions for non-topological solitons in
three-dimensional U(1)-gauged ${\cal N}=2$ supergravity. We find the region of
the solutions showing with the BTZ mass, the angular momentum and the magnetic
flux and discuss the relation among the physical parameters for various values
of a cosmologica... | [
{
"created": "Fri, 23 May 2003 13:27:31 GMT",
"version": "v1"
},
{
"created": "Fri, 30 May 2003 09:00:26 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Apr 2004 06:50:13 GMT",
"version": "v3"
}
] | 2016-08-31 | [
[
"Cho",
"Yoshinori",
"",
"Yamaguchi\n University"
],
[
"Sakamoto",
"Kenji",
"",
"Yamaguchi\n University"
],
[
"Shiraishi",
"Kiyoshi",
"",
"Yamaguchi\n University"
]
] | We construct numerical solutions for non-topological solitons in three-dimensional U(1)-gauged ${\cal N}=2$ supergravity. We find the region of the solutions showing with the BTZ mass, the angular momentum and the magnetic flux and discuss the relation among the physical parameters for various values of a cosmological ... |
2005.04219 | Zhen-Ming Xu | Zhen-Ming Xu, Bin Wu, Tao Yang and Wen-Li Yang | A new measure of thermal micro-behavior for the AdS black hole | 13 pages, 2 figures; v2:add References and some comments; v3: final
version to be published in Chinese Physics C | Chinese Physics C Vol. 45, No. 1 (2021) 015106 | 10.1088/1674-1137/abc23e | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspired by the hypothesis of the black hole molecule, with the help of the
Hawking temperature, entropy and the thermodynamics curvature of the black
hole, we propose a new measure of the relation between the interaction and the
thermal motion of molecules of the AdS black hole as a preliminary and
coarse-grained de... | [
{
"created": "Fri, 8 May 2020 05:18:59 GMT",
"version": "v1"
},
{
"created": "Sun, 17 May 2020 01:13:07 GMT",
"version": "v2"
},
{
"created": "Tue, 29 Sep 2020 08:01:36 GMT",
"version": "v3"
}
] | 2021-01-22 | [
[
"Xu",
"Zhen-Ming",
""
],
[
"Wu",
"Bin",
""
],
[
"Yang",
"Tao",
""
],
[
"Yang",
"Wen-Li",
""
]
] | Inspired by the hypothesis of the black hole molecule, with the help of the Hawking temperature, entropy and the thermodynamics curvature of the black hole, we propose a new measure of the relation between the interaction and the thermal motion of molecules of the AdS black hole as a preliminary and coarse-grained desc... |
2202.04439 | Adri\'an Casado-Turri\'on | Adri\'an Casado-Turri\'on, \'Alvaro de la Cruz-Dombriz, Antonio Dobado | Is gravitational collapse possible in $f(R)$ gravity? | 18 pages, 0 figures; minor typos corrected, version published in
Phys. Rev. D 105 084060 | Phys. Rev. D 105, 084060 (2022) | 10.1103/PhysRevD.105.084060 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational collapse is still poorly understood in the context of $f(R)$
theories of gravity, since the Oppenheimer-Snyder model is incompatible with
their junction conditions. In this work, we will present a systematic approach
to the problem. Starting with a thorough analysis of how the Oppenheimer-Snyder
constru... | [
{
"created": "Wed, 9 Feb 2022 13:13:29 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Apr 2022 18:00:49 GMT",
"version": "v2"
}
] | 2022-05-02 | [
[
"Casado-Turrión",
"Adrián",
""
],
[
"de la Cruz-Dombriz",
"Álvaro",
""
],
[
"Dobado",
"Antonio",
""
]
] | Gravitational collapse is still poorly understood in the context of $f(R)$ theories of gravity, since the Oppenheimer-Snyder model is incompatible with their junction conditions. In this work, we will present a systematic approach to the problem. Starting with a thorough analysis of how the Oppenheimer-Snyder construct... |
gr-qc/9804055 | Domenico Giulini | Domenico Giulini | On the Construction of Time-Symmetric Black Hole Initial Data | 18 pages, Latex, uses Springer style-file lamuphys.sty. To appear in
"Black Holes: Theory and Observation", edited by F. Hehl, C. Kiefer and R.
Metzler, Springer 1998 | null | 10.1007/978-3-540-49535-2_11 | null | gr-qc | null | We review in a pedagogical fashion the 3+1-split which serves to put
Einstein's equations into the form of a dynamical system with constraints. We
then discuss the constraint equations under the simplifying assumption of
time-symmetry. Multi-Black-Hole data are presented and more explicitly
described in the case of t... | [
{
"created": "Wed, 22 Apr 1998 17:10:08 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Giulini",
"Domenico",
""
]
] | We review in a pedagogical fashion the 3+1-split which serves to put Einstein's equations into the form of a dynamical system with constraints. We then discuss the constraint equations under the simplifying assumption of time-symmetry. Multi-Black-Hole data are presented and more explicitly described in the case of two... |
1310.5381 | Leonardo Gualtieri | Andrea Maselli, Leonardo Gualtieri, Valeria Ferrari | Constraining the equation of state of nuclear matter with gravitational
wave observations: Tidal deformability and tidal disruption | 13 pages, 4 figures, 4 tables. Minor changes to match the version
appearing on Phys. Rev. D | null | 10.1103/PhysRevD.88.104040 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study how to extract information on the neutron star equation of state
from the gravitational wave signal emitted during the coalescence of a binary
system composed of two neutron stars or a neutron star and a black hole. We use
post-Newtonian templates which include the tidal deformability parameter and,
when tid... | [
{
"created": "Sun, 20 Oct 2013 23:17:50 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Nov 2013 16:52:46 GMT",
"version": "v2"
}
] | 2015-06-17 | [
[
"Maselli",
"Andrea",
""
],
[
"Gualtieri",
"Leonardo",
""
],
[
"Ferrari",
"Valeria",
""
]
] | We study how to extract information on the neutron star equation of state from the gravitational wave signal emitted during the coalescence of a binary system composed of two neutron stars or a neutron star and a black hole. We use post-Newtonian templates which include the tidal deformability parameter and, when tidal... |
1606.06635 | Pedro Bargueno | Nicol\'as Morales--Dur\'an, Andr\'es F. Vargas, Paulina
Hoyos--Restrepo and Pedro Bargue\~no | Simple regular black hole with logarithmic entropy correction | null | null | 10.1140/epjc/s10052-016-4417-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A simple regular black hole solution satisfying the weak energy condition is
obtained within Einstein--non--linear electrodynamics theory. We have computed
the thermodynamic properties of this black hole by a careful analysis of the
horizons and we have found that the usual Bekenstein--Hawking entropy gets
corrected ... | [
{
"created": "Tue, 21 Jun 2016 16:04:14 GMT",
"version": "v1"
}
] | 2016-11-23 | [
[
"Morales--Durán",
"Nicolás",
""
],
[
"Vargas",
"Andrés F.",
""
],
[
"Hoyos--Restrepo",
"Paulina",
""
],
[
"Bargueño",
"Pedro",
""
]
] | A simple regular black hole solution satisfying the weak energy condition is obtained within Einstein--non--linear electrodynamics theory. We have computed the thermodynamic properties of this black hole by a careful analysis of the horizons and we have found that the usual Bekenstein--Hawking entropy gets corrected by... |
2003.07463 | Francisco Cabral | Francisco Cabral, Francisco S. N. Lobo, Diego Rubiera-Garcia | Cosmological bounces, cyclic universes, and effective cosmological
constant in Einstein-Cartan-Dirac-Maxwell theory | 20 pages, 4 figures | Phys. Rev. D 102, 083509 (2020) | 10.1103/PhysRevD.102.083509 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein-Cartan theory is an extension of the standard formulation of General
Relativity characterized by a non-vanishing torsion. The latter is sourced by
the matter fields via the spin tensor, and its effects are expected to be
important at very high spin densities. In this work we analyze in detail the
physics of ... | [
{
"created": "Mon, 16 Mar 2020 23:02:14 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Oct 2020 11:18:06 GMT",
"version": "v2"
}
] | 2020-10-08 | [
[
"Cabral",
"Francisco",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
]
] | Einstein-Cartan theory is an extension of the standard formulation of General Relativity characterized by a non-vanishing torsion. The latter is sourced by the matter fields via the spin tensor, and its effects are expected to be important at very high spin densities. In this work we analyze in detail the physics of Ei... |
1703.02853 | Vasilis Oikonomou | S.D. Odintsov, V.K. Oikonomou | Inflationary Dynamics with a Smooth Slow-Roll to Constant-Roll Era
Transition | JCAP Accepted | null | 10.1088/1475-7516/2017/04/041 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we investigate the implications of having a varying second
slow-roll index on the canonical scalar field inflationary dynamics. We shall
be interested in cases that the second slow-roll can take small values and
correspondingly large values, for limiting cases of the function that
quantifies the variati... | [
{
"created": "Wed, 8 Mar 2017 14:42:50 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Apr 2017 22:29:47 GMT",
"version": "v2"
}
] | 2017-05-03 | [
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this paper we investigate the implications of having a varying second slow-roll index on the canonical scalar field inflationary dynamics. We shall be interested in cases that the second slow-roll can take small values and correspondingly large values, for limiting cases of the function that quantifies the variation... |
2401.17113 | Sebastiano Segreto | Sebastiano Segreto, Giovanni Montani | n-dimensional non-commutative GUP quantization and application to the
Bianchi I model | 16 pages, 5 figures | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | We analyse a n-dimensional Generalized Uncertainty Principle (GUP)
quantization framework, characterized by a non-commutative nature of the
configurational variables. First, we identify a set of states which are
maximally localized only along a single direction, at the expense of being less
localized in all the other... | [
{
"created": "Tue, 30 Jan 2024 15:47:28 GMT",
"version": "v1"
}
] | 2024-01-31 | [
[
"Segreto",
"Sebastiano",
""
],
[
"Montani",
"Giovanni",
""
]
] | We analyse a n-dimensional Generalized Uncertainty Principle (GUP) quantization framework, characterized by a non-commutative nature of the configurational variables. First, we identify a set of states which are maximally localized only along a single direction, at the expense of being less localized in all the other o... |
1601.05583 | Burkhard Kleihaus | Burkhard Kleihaus, Jutta Kunz, Sindy Mojica, and Marco Zagermann | Rapidly Rotating Neutron Stars in Dilatonic Einstein-Gauss-Bonnet Theory | 24 pages, 15 figures | Phys. Rev. D 93, 064077 (2016) | 10.1103/PhysRevD.93.064077 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct sequences of rapidly rotating neutron stars in dilatonic
Einstein-Gauss-Bonnet theory, employing two equations of state for the nuclear
matter. We analyze the dependence of the physical properties of these neutron
stars on the Gauss-Bonnet coupling strength. For a given equation of state we
determine the... | [
{
"created": "Thu, 21 Jan 2016 10:43:42 GMT",
"version": "v1"
}
] | 2016-06-22 | [
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Mojica",
"Sindy",
""
],
[
"Zagermann",
"Marco",
""
]
] | We construct sequences of rapidly rotating neutron stars in dilatonic Einstein-Gauss-Bonnet theory, employing two equations of state for the nuclear matter. We analyze the dependence of the physical properties of these neutron stars on the Gauss-Bonnet coupling strength. For a given equation of state we determine the p... |
2112.14259 | Nihan Kat{\i}rc{\i} Dr. | Ozgur Akarsu, Tekin Dereli, Nihan Katirci | $\Lambda$CDM cosmology with a quiescent anisotropy in a higher
dimensional steady state universe | 9 pages, no figures and tables | null | 10.1088/1742-6596/2191/1/012001 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, which follows a series of studies on the higher-dimensional
steady state universe idea and prepared for Professor Tekin Dereli's
Festschrift, we show the influence of the dynamical internal (unobservable)
space on the evolution of the possible anisotropy of the external (observable)
space. We obtain mat... | [
{
"created": "Tue, 28 Dec 2021 18:57:48 GMT",
"version": "v1"
}
] | 2022-02-23 | [
[
"Akarsu",
"Ozgur",
""
],
[
"Dereli",
"Tekin",
""
],
[
"Katirci",
"Nihan",
""
]
] | In this work, which follows a series of studies on the higher-dimensional steady state universe idea and prepared for Professor Tekin Dereli's Festschrift, we show the influence of the dynamical internal (unobservable) space on the evolution of the possible anisotropy of the external (observable) space. We obtain mathe... |
gr-qc/0603111 | Igor V. Volovich | V.V. Kozlov and I.V. Volovich | Finite Action Klein-Gordon Solutions on Lorentzian Manifolds | 8 pages | Int.J.Geom.Meth.Mod.Phys. 3 (2006) 1349-1358 | null | null | gr-qc hep-th math-ph math.DG math.MP | null | The eigenvalue problem for the square integrable solutions is studied usually
for elliptic equations. In this note we consider such a problem for the
hyperbolic Klein-Gordon equation on Lorentzian manifolds. The investigation
could help to answer the question why elementary particles have a discrete mass
spectrum. An... | [
{
"created": "Tue, 28 Mar 2006 18:12:39 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kozlov",
"V. V.",
""
],
[
"Volovich",
"I. V.",
""
]
] | The eigenvalue problem for the square integrable solutions is studied usually for elliptic equations. In this note we consider such a problem for the hyperbolic Klein-Gordon equation on Lorentzian manifolds. The investigation could help to answer the question why elementary particles have a discrete mass spectrum. An i... |
gr-qc/0202103 | Eugen Radu | Eugen Radu (Faculty of Physics, Albert-Ludwigs-University, Freiburg,
Germany) | New nonabelian solutions in D=4, N=4 gauged supergravity | 8 pages, LaTeX, 2 figures, new references added | Phys.Lett. B542 (2002) 275-281 | 10.1016/S0370-2693(02)02378-X | Freiburg-THEP 02/05 | gr-qc | null | In this paper we look for static, purely magnetic, nonabelian solutions with
unusual topology in the context of N=4 Freedman-Schwarz supergravity in four
dimensions.Two new exact solutions satisfying first order Bogomol'nyi equations
are discussed.The main characteristics of the general solutions are presented
and di... | [
{
"created": "Thu, 28 Feb 2002 17:50:53 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Jul 2002 12:08:08 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Radu",
"Eugen",
"",
"Faculty of Physics, Albert-Ludwigs-University, Freiburg,\n Germany"
]
] | In this paper we look for static, purely magnetic, nonabelian solutions with unusual topology in the context of N=4 Freedman-Schwarz supergravity in four dimensions.Two new exact solutions satisfying first order Bogomol'nyi equations are discussed.The main characteristics of the general solutions are presented and diff... |
1801.05690 | Edward Belbruno A | Edward Belbruno, BingKan Xue | Regularization of the big bang singularity with random perturbations | 21 pages, 4 figures | null | 10.1088/1361-6382/aaab3d | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show how to regularize the big bang singularity in the presence of random
perturbations modeled by Brownian motion using stochastic methods. We prove
that the physical variables in a contracting universe dominated by a scalar
field can be continuously and uniquely extended through the big bang as a
function of tim... | [
{
"created": "Sat, 13 Jan 2018 20:25:07 GMT",
"version": "v1"
}
] | 2018-03-14 | [
[
"Belbruno",
"Edward",
""
],
[
"Xue",
"BingKan",
""
]
] | We show how to regularize the big bang singularity in the presence of random perturbations modeled by Brownian motion using stochastic methods. We prove that the physical variables in a contracting universe dominated by a scalar field can be continuously and uniquely extended through the big bang as a function of time ... |
gr-qc/9806020 | Yuri P. Goncharov | Yu. P. Goncharov (Sankt-Petersburg State Technical Unversity) | U(N)-monopoles on Kerr black hole and its entropy | 12 pages, LaTeX with using the mpla1.sty file from the package of
World Scientific Publishing Co | Mod.Phys.Lett. A13 (1998) 1495-1507 | 10.1142/S0217732398001571 | null | gr-qc | null | We describe U(N)-monopoles (N > 1) on Kerr black holes by the parameters of
the moduli space of holomorphic vector U(N)-bundles over two-sphere with the
help of the Grothendieck splitting theorem. For N = 2,3 we obtain this
description in an explicit form as well as the estimates for the corresponding
monopole masses... | [
{
"created": "Thu, 4 Jun 1998 11:07:55 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Goncharov",
"Yu. P.",
"",
"Sankt-Petersburg State Technical Unversity"
]
] | We describe U(N)-monopoles (N > 1) on Kerr black holes by the parameters of the moduli space of holomorphic vector U(N)-bundles over two-sphere with the help of the Grothendieck splitting theorem. For N = 2,3 we obtain this description in an explicit form as well as the estimates for the corresponding monopole masses. ... |
0811.3593 | Oliver Rinne | Oliver Rinne, Luisa T. Buchman, Mark A. Scheel and Harald P. Pfeiffer | Implementation of higher-order absorbing boundary conditions for the
Einstein equations | 25 pages, 9 figures. Minor clarifications. Final version to appear in
Class. Quantum Grav. | null | 10.1088/0264-9381/26/7/075009 | DAMTP-2008-108 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an implementation of absorbing boundary conditions for the
Einstein equations based on the recent work of Buchman and Sarbach. In this
paper, we assume that spacetime may be linearized about Minkowski space close
to the outer boundary, which is taken to be a coordinate sphere. We reformulate
the boundary c... | [
{
"created": "Fri, 21 Nov 2008 17:50:43 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Feb 2009 18:44:03 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Rinne",
"Oliver",
""
],
[
"Buchman",
"Luisa T.",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Pfeiffer",
"Harald P.",
""
]
] | We present an implementation of absorbing boundary conditions for the Einstein equations based on the recent work of Buchman and Sarbach. In this paper, we assume that spacetime may be linearized about Minkowski space close to the outer boundary, which is taken to be a coordinate sphere. We reformulate the boundary con... |
2007.01998 | Dongxue Qu | Muxin Han, Zichang Huang, Hongguang Liu and Dongxue Qu | Numerical computations of next-to-leading order corrections in spinfoam
large-$j$ asymptotics | 24 pages, 5 figures | Phys. Rev. D 102, 124010 (2020) | 10.1103/PhysRevD.102.124010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We numerically study the next-to-leading order corrections of the Lorentzian
Engle-Pereira-Rovelli-Livine (EPRL) 4-simplex amplitude in the large-$j$
expansions. We perform large-$j$ expansions of Lorentzian EPRL 4-simplex
amplitudes with two different types of boundary states, the coherent
intertwiners and the coher... | [
{
"created": "Sat, 4 Jul 2020 03:40:29 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Aug 2020 21:45:35 GMT",
"version": "v2"
},
{
"created": "Fri, 16 Oct 2020 22:10:40 GMT",
"version": "v3"
},
{
"created": "Mon, 26 Oct 2020 22:17:12 GMT",
"version": "v4"
},
{
"cr... | 2021-03-02 | [
[
"Han",
"Muxin",
""
],
[
"Huang",
"Zichang",
""
],
[
"Liu",
"Hongguang",
""
],
[
"Qu",
"Dongxue",
""
]
] | We numerically study the next-to-leading order corrections of the Lorentzian Engle-Pereira-Rovelli-Livine (EPRL) 4-simplex amplitude in the large-$j$ expansions. We perform large-$j$ expansions of Lorentzian EPRL 4-simplex amplitudes with two different types of boundary states, the coherent intertwiners and the coheren... |
1401.5275 | Daniel Siegel | Daniel M. Siegel and Riccardo Ciolfi | Magnetic field amplification in hypermassive neutron stars via the
magnetorotational instability | 6 pages, 3 figures. Proceedings of the Karl Schwarzschild Meeting
2013 | null | null | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Mergers of binary neutron stars likely lead to the formation of a
hypermassive neutron star (HMNS), which is metastable and eventually collapses
to a black hole. This merger scenario is thought to explain the phenomenology
of short gamma-ray bursts (SGRBs). The very high energies observed in SGRBs
have been suggested... | [
{
"created": "Tue, 21 Jan 2014 11:31:28 GMT",
"version": "v1"
}
] | 2014-01-22 | [
[
"Siegel",
"Daniel M.",
""
],
[
"Ciolfi",
"Riccardo",
""
]
] | Mergers of binary neutron stars likely lead to the formation of a hypermassive neutron star (HMNS), which is metastable and eventually collapses to a black hole. This merger scenario is thought to explain the phenomenology of short gamma-ray bursts (SGRBs). The very high energies observed in SGRBs have been suggested t... |
2305.02702 | Daqi Yang | Daqi Yang, Wenfang Liu, Xin Wu | Impact of electric charges on chaos in magnetized
$Reissner-Nordstr\"{o}m$ spacetimes | 16 pages, 11 figures | Eur. Phys. J. C (2023) 83:357 | 10.1140/epjc/s10052-023-11551-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the motion of test particles around a $Reissner-Nordstr\"{o}m$
black hole immersed into a strong external magnetic field modifying the
spacetime structure. When the particles are neutral, their dynamics are
nonintegrable because the magnetic field acts as a gravitational effect, which
destroys the existen... | [
{
"created": "Thu, 4 May 2023 10:24:33 GMT",
"version": "v1"
}
] | 2023-05-05 | [
[
"Yang",
"Daqi",
""
],
[
"Liu",
"Wenfang",
""
],
[
"Wu",
"Xin",
""
]
] | We consider the motion of test particles around a $Reissner-Nordstr\"{o}m$ black hole immersed into a strong external magnetic field modifying the spacetime structure. When the particles are neutral, their dynamics are nonintegrable because the magnetic field acts as a gravitational effect, which destroys the existence... |
2203.05003 | Andrea Maselli | Susanna Barsanti, Nicola Franchini, Leonardo Gualtieri, Andrea
Maselli, Thomas P. Sotiriou | Extreme mass-ratio inspirals as probes of scalar fields: eccentric
equatorial orbits around Kerr black holes | Minor changes to match the version published on Phys. Rev. D | null | 10.1103/PhysRevD.106.044029 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study binary systems in which a stellar mass compact object spirals into a
massive black hole, known as extreme mass ratio inspirals, in scenarios with a
new fundamental scalar field. Earlier work has shown that, in most interesting
such scenarios and to leading order in the mass ratio, the massive black holes
can... | [
{
"created": "Wed, 9 Mar 2022 19:01:31 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Sep 2022 09:59:00 GMT",
"version": "v2"
}
] | 2022-09-15 | [
[
"Barsanti",
"Susanna",
""
],
[
"Franchini",
"Nicola",
""
],
[
"Gualtieri",
"Leonardo",
""
],
[
"Maselli",
"Andrea",
""
],
[
"Sotiriou",
"Thomas P.",
""
]
] | We study binary systems in which a stellar mass compact object spirals into a massive black hole, known as extreme mass ratio inspirals, in scenarios with a new fundamental scalar field. Earlier work has shown that, in most interesting such scenarios and to leading order in the mass ratio, the massive black holes can b... |
1907.08308 | Adam D. Helfer | Adam D. Helfer | Magnetic effects in general relativity: quadrupoles, shear and memory | 18 pages, accepted for publication in PRD | null | 10.1103/PhysRevD.100.044004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational effect of "magnetic type" -- those having a curl-like character
over large spheres -- are investigated, for isolated systems. The
Bondi-Sachs-Newman-Penrose formalism clarifies a number of points, especially
related to radiation memory. It is shown that the "memory tensor" is equivalent
to the change in... | [
{
"created": "Thu, 18 Jul 2019 22:08:55 GMT",
"version": "v1"
}
] | 2019-08-14 | [
[
"Helfer",
"Adam D.",
""
]
] | Gravitational effect of "magnetic type" -- those having a curl-like character over large spheres -- are investigated, for isolated systems. The Bondi-Sachs-Newman-Penrose formalism clarifies a number of points, especially related to radiation memory. It is shown that the "memory tensor" is equivalent to the change in B... |
gr-qc/0012104 | A. Miyazaki | A.Miyazaki | Physical Significance of the Difference between the Brans-Dicke Theory
and General Relativity | 13 pages, LaTeX2e. Submitted to Physical Review D | null | null | null | gr-qc | null | The asymptotic behavior of the scalar field and its physical meaning are
discussed for T=0 and T\neq 0 for the large enough coupling parameter \omega.
The special character of the Brans-Dicke theory is also discussed for local and
cosmological problems in comparison with general relativity and the selection
rules are... | [
{
"created": "Thu, 28 Dec 2000 16:02:03 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Miyazaki",
"A.",
""
]
] | The asymptotic behavior of the scalar field and its physical meaning are discussed for T=0 and T\neq 0 for the large enough coupling parameter \omega. The special character of the Brans-Dicke theory is also discussed for local and cosmological problems in comparison with general relativity and the selection rules are i... |
gr-qc/9804051 | Alexander Vilenkin | Alexander Vilenkin (Tufts University) | The wave function discord | 7 pages, 2 figures | Phys.Rev. D58 (1998) 067301 | 10.1103/PhysRevD.58.067301 | null | gr-qc astro-ph hep-th | null | Linde's proposal of a Euclidean path integral with the ``wrong'' sign of
Euclidean action is often identified with the tunneling proposal for the wave
function of the universe. However, the two proposals are in fact quite
different. I illustrate the difference and point out that recent criticism by
Hawking and Turok ... | [
{
"created": "Wed, 22 Apr 1998 00:18:37 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Vilenkin",
"Alexander",
"",
"Tufts University"
]
] | Linde's proposal of a Euclidean path integral with the ``wrong'' sign of Euclidean action is often identified with the tunneling proposal for the wave function of the universe. However, the two proposals are in fact quite different. I illustrate the difference and point out that recent criticism by Hawking and Turok do... |
1601.03942 | Massimo Tessarotto | Massimo Tessarotto (Department of Mathematics and Geosciences,
University of Trieste, Italy and Institute of Physics, Faculty of Philosophy
and Science, Silesian University in Opava, Bezru\v{c}ovo n\'am.13, CZ-74601
Opava, Czech Republic) and Claudio Cremaschini (Institute of Physics, Faculty
of Philosophy and ... | Theory of non-local point transformations - Part 3: Theory of
NLPT-acceleration and the physical origin of acceleration effects in curved
space-times | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is motivated by the introduction of a new functional setting of
General Relativity (GR) based on the adoption of suitable group non-local point
transformations (NLPT). Unlike the customary local point transformatyion
usually utilized in GR, these transformations map in each other intrinsically
different cu... | [
{
"created": "Wed, 13 Jan 2016 07:54:18 GMT",
"version": "v1"
}
] | 2016-01-18 | [
[
"Tessarotto",
"Massimo",
"",
"Department of Mathematics and Geosciences,\n University of Trieste, Italy and Institute of Physics, Faculty of Philosophy\n and Science, Silesian University in Opava, Bezručovo nám.13, CZ-74601\n Opava, Czech Republic"
],
[
"Cremaschini",
"Claudio",
... | This paper is motivated by the introduction of a new functional setting of General Relativity (GR) based on the adoption of suitable group non-local point transformations (NLPT). Unlike the customary local point transformatyion usually utilized in GR, these transformations map in each other intrinsically different curv... |
2305.01430 | Pietro Conzinu | Pietro Conzinu, Giovanni Marozzi | Primordial black holes formation in a early matter dominated era from
the pre-big bang scenario | 8 pages, 4 figures, Comments, clarifications (including a new
subsection) and references added. Version accepted for publication in Phys.
Rev. D | null | null | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We discuss the production of primordial black holes in an early matter
dominated era, which typically takes place in string inspired early universe
cosmological models. In particular, we consider a pre-big bang scenario
(extending previous results regarding formation in the radiation dominated era)
where the enhancem... | [
{
"created": "Tue, 2 May 2023 14:00:04 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Aug 2023 00:25:11 GMT",
"version": "v2"
}
] | 2023-08-14 | [
[
"Conzinu",
"Pietro",
""
],
[
"Marozzi",
"Giovanni",
""
]
] | We discuss the production of primordial black holes in an early matter dominated era, which typically takes place in string inspired early universe cosmological models. In particular, we consider a pre-big bang scenario (extending previous results regarding formation in the radiation dominated era) where the enhancemen... |
1312.7747 | Leonid Perlov | Leonid Perlov | Lorentz Spin-Foam with Non Unitary Representations by use of Holomorphic
Peter-Weyl Theorem | null | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In quantum gravity the unitary evolution does not follow from the
Wheeler-DeWitt dynamics equation as it follows from the Schr\"odinger equation
in non-relativistic quantum mechanics. Therefore we can define a spin-foam
model based on SL(2,C) spinor finite non-unitary representations. The recently
discovered holomorp... | [
{
"created": "Mon, 30 Dec 2013 15:47:07 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jan 2014 21:30:33 GMT",
"version": "v2"
},
{
"created": "Fri, 23 May 2014 15:23:46 GMT",
"version": "v3"
},
{
"created": "Tue, 10 Jun 2014 06:16:34 GMT",
"version": "v4"
},
{
"c... | 2015-10-07 | [
[
"Perlov",
"Leonid",
""
]
] | In quantum gravity the unitary evolution does not follow from the Wheeler-DeWitt dynamics equation as it follows from the Schr\"odinger equation in non-relativistic quantum mechanics. Therefore we can define a spin-foam model based on SL(2,C) spinor finite non-unitary representations. The recently discovered holomorphi... |
2105.06254 | Sayantan Choudhury | Sayantan Choudhury | Cosmological Geometric Phase From Pure Quantum States: A study
without/with having Bell's inequality violation | 60 pages, 20 figures, 1 table, Revised version accepted for
publication in Fortschritte der Physik - Progress of Physics | Fortsch.Phys. 70 (2022) 9-10, 2100144 | 10.1002/prop.202100144 | null | gr-qc astro-ph.CO cond-mat.other hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, using the concept of Lewis Riesenfeld invariant quantum
operator method for finding continuous eigenvalues of quantum mechanical wave
functions we derive the analytical expressions for the cosmological geometric
phase, which is commonly identified to be the Pancharatnam Berry phase from
primordial cosm... | [
{
"created": "Mon, 10 May 2021 18:00:04 GMT",
"version": "v1"
},
{
"created": "Sun, 21 Aug 2022 13:42:22 GMT",
"version": "v2"
}
] | 2022-10-10 | [
[
"Choudhury",
"Sayantan",
""
]
] | In this paper, using the concept of Lewis Riesenfeld invariant quantum operator method for finding continuous eigenvalues of quantum mechanical wave functions we derive the analytical expressions for the cosmological geometric phase, which is commonly identified to be the Pancharatnam Berry phase from primordial cosmol... |
2001.04423 | Edward Anderson | Edward Anderson | A Local Resolution of the Problem of Time. VIII. Assignment of
Observables | 25 pages including 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given a state space, Assignment of Observables involves Taking Function
spaces Thereover. At the classical level, the state space in question is phase
space or configuration space. This assignment picks up nontrivialities when
whichever combination of constraints and the quantum apply.
For Finite Theories, weak obs... | [
{
"created": "Mon, 13 Jan 2020 17:45:07 GMT",
"version": "v1"
}
] | 2020-01-14 | [
[
"Anderson",
"Edward",
""
]
] | Given a state space, Assignment of Observables involves Taking Function spaces Thereover. At the classical level, the state space in question is phase space or configuration space. This assignment picks up nontrivialities when whichever combination of constraints and the quantum apply. For Finite Theories, weak observa... |
gr-qc/9702035 | Carlos F. Sopuerta | J. M. M. Senovilla (1), C. F. Sopuerta (1) and P. Szekeres (2) ((1)
Departament de Fisica Fonamental, Universitat de Barcelona, Spain (2)
Department of Physics and Mathematical Physics, University of Adelaide,
Australia) | Theorems on shear-free perfect fluids with their Newtonian analogues | 23 pages, LaTeX. Submitted to GRG | Gen.Rel.Grav.30:389-411,1998 | 10.1023/A:1018854608416 | null | gr-qc | null | In this paper we provide fully covariant proofs of some theorems on
shear-free perfect fluids. In particular, we explicitly show that any
shear-free perfect fluid with the acceleration proportional to the vorticity
vector (including the simpler case of vanishing acceleration) must be either
non-expanding or non-rotat... | [
{
"created": "Tue, 18 Feb 1997 17:58:25 GMT",
"version": "v1"
}
] | 2010-12-03 | [
[
"Senovilla",
"J. M. M.",
""
],
[
"Sopuerta",
"C. F.",
""
],
[
"Szekeres",
"P.",
""
]
] | In this paper we provide fully covariant proofs of some theorems on shear-free perfect fluids. In particular, we explicitly show that any shear-free perfect fluid with the acceleration proportional to the vorticity vector (including the simpler case of vanishing acceleration) must be either non-expanding or non-rotatin... |
0808.1628 | S. Mignemi | S. Mignemi | Doubly special relativity and translation invariance | 10 pages, plain TeX | Phys.Lett.B672:186-189,2009 | 10.1016/j.physletb.2009.01.023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new interpretation of doubly special relativity (DSR) based on
the distinction between the momentum and the translation generators in its
phase space realization. We also argue that the implementation of DSR theories
does not necessarily require a deformation of the Lorentz symmetry, but only of
the tran... | [
{
"created": "Tue, 12 Aug 2008 09:47:23 GMT",
"version": "v1"
}
] | 2009-02-12 | [
[
"Mignemi",
"S.",
""
]
] | We propose a new interpretation of doubly special relativity (DSR) based on the distinction between the momentum and the translation generators in its phase space realization. We also argue that the implementation of DSR theories does not necessarily require a deformation of the Lorentz symmetry, but only of the transl... |
1608.00285 | Ichiro Oda | Ichiro Oda | Reissner-Nordstrom Solution from Weyl Transverse Gravity | 11 pages. arXiv admin note: text overlap with arXiv:1607.06562 | null | 10.1142/S0217732316502060 | DPUR/TH/51 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study classical solutions in the Weyl-transverse (WTDiff) gravity coupled
to an electro-magnetic field in four space-time dimensions. The WTDiff gravity
is invariant under both the local Weyl (conformal) transformation and the
volume preserving diffeormorphisms (transverse diffeomorphisms) and is known to
be equiv... | [
{
"created": "Mon, 1 Aug 2016 00:35:23 GMT",
"version": "v1"
}
] | 2016-11-23 | [
[
"Oda",
"Ichiro",
""
]
] | We study classical solutions in the Weyl-transverse (WTDiff) gravity coupled to an electro-magnetic field in four space-time dimensions. The WTDiff gravity is invariant under both the local Weyl (conformal) transformation and the volume preserving diffeormorphisms (transverse diffeomorphisms) and is known to be equival... |
1109.2719 | Taeyoon Moon | Taeyoon Moon and Yun Soo Myung | Stability of Schwarzschild black hole in f(R) gravity with the dynamical
Chern-Simons term | 14 pages, no figures, version to appear in PRD | null | 10.1103/PhysRevD.84.104029 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform the stability analysis of the Schwarzschild black hole in $f(R)$
gravity with the parity-violating Chern-Simons (CS) term coupled to a dynamical
scalar field $\theta$. For this purpose, we transform the $f(R)$ gravity into
the scalar-tensor theory by introducing a scalaron $\phi$, providing the
dynamical C... | [
{
"created": "Tue, 13 Sep 2011 09:34:19 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Oct 2011 14:55:14 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"Moon",
"Taeyoon",
""
],
[
"Myung",
"Yun Soo",
""
]
] | We perform the stability analysis of the Schwarzschild black hole in $f(R)$ gravity with the parity-violating Chern-Simons (CS) term coupled to a dynamical scalar field $\theta$. For this purpose, we transform the $f(R)$ gravity into the scalar-tensor theory by introducing a scalaron $\phi$, providing the dynamical Che... |
2207.08987 | Charles Keeton | Arthur B. Congdon, Savitri V. Iyer, Charles R. Keeton | Asymmetric Light Bending in the Equatorial Kerr Metric | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | The observation of the bending of light by mass, now known as gravitational
lensing, was key in establishing general relativity as one of the pillars of
modern physics. In the past couple of decades, there has been increasing
interest in using gravitational lensing to test general relativity beyond the
weak deflectio... | [
{
"created": "Mon, 18 Jul 2022 23:51:57 GMT",
"version": "v1"
}
] | 2022-07-20 | [
[
"Congdon",
"Arthur B.",
""
],
[
"Iyer",
"Savitri V.",
""
],
[
"Keeton",
"Charles R.",
""
]
] | The observation of the bending of light by mass, now known as gravitational lensing, was key in establishing general relativity as one of the pillars of modern physics. In the past couple of decades, there has been increasing interest in using gravitational lensing to test general relativity beyond the weak deflection ... |
1809.07169 | Zacharias Roupas | Zacharias Roupas, Pierre-Henri Chavanis | Relativistic Gravitational Phase Transitions and Instabilities of the
Fermi Gas | null | Classical & Quantum Gravity, 36, 065001 (2019) | 10.1088/1361-6382/ab04e5 | null | gr-qc astro-ph.HE cond-mat.stat-mech hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe microcanonical phase transitions and instabilities of the ideal
Fermi gas in general relativity at nonzero temperature confined in the interior
of a spherical shell. The thermodynamic behaviour is governed by the
compactness of rest mass, namely of the total rest mass over radius of the
system. For a fixe... | [
{
"created": "Wed, 19 Sep 2018 13:16:42 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Feb 2019 12:44:23 GMT",
"version": "v2"
}
] | 2020-03-04 | [
[
"Roupas",
"Zacharias",
""
],
[
"Chavanis",
"Pierre-Henri",
""
]
] | We describe microcanonical phase transitions and instabilities of the ideal Fermi gas in general relativity at nonzero temperature confined in the interior of a spherical shell. The thermodynamic behaviour is governed by the compactness of rest mass, namely of the total rest mass over radius of the system. For a fixed ... |
1906.03873 | Jinsong Yang | Jinsong Yang, Cong Zhang, Yongge Ma | Loop quantum cosmology from an alternative Hamiltonian | 8 pages, 2 figures; version published in PRD | Phys. Rev. D 100, 064026 (2019) | 10.1103/PhysRevD.100.064026 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, a new Hamiltonian constraint operator for loop quantum
cosmology is constructed by using the Chern-Simons action. The quantum dynamics
of the $k=0$ cosmological model with respect to a massless scalar field as an
emergent time is determined by a difference equation. The semiclassical
analysis shows tha... | [
{
"created": "Mon, 10 Jun 2019 09:53:43 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Sep 2019 07:23:43 GMT",
"version": "v2"
}
] | 2019-09-23 | [
[
"Yang",
"Jinsong",
""
],
[
"Zhang",
"Cong",
""
],
[
"Ma",
"Yongge",
""
]
] | In this paper, a new Hamiltonian constraint operator for loop quantum cosmology is constructed by using the Chern-Simons action. The quantum dynamics of the $k=0$ cosmological model with respect to a massless scalar field as an emergent time is determined by a difference equation. The semiclassical analysis shows that ... |
gr-qc/0007072 | Romualdo Tresguerres | R. Tresguerres and E.W. Mielke | Gravitational Goldstone fields from affine gauge theory | LaTeX, 9 pages, no figures. Revised version, slightly differing from
the published one in a few presentation details | Phys.Rev. D62 (2000) 044004 | 10.1103/PhysRevD.62.044004 | null | gr-qc | null | In order to facilitate the application of standard renormalization
techniques, gravitation should be decribed, if possible, in pure connection
formalism, as a Yang-Mills theory of a certain spacetime group, say the
Poincare or the affine group. This embodies the translational as well as the
linear connection. However... | [
{
"created": "Thu, 27 Jul 2000 11:22:15 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Tresguerres",
"R.",
""
],
[
"Mielke",
"E. W.",
""
]
] | In order to facilitate the application of standard renormalization techniques, gravitation should be decribed, if possible, in pure connection formalism, as a Yang-Mills theory of a certain spacetime group, say the Poincare or the affine group. This embodies the translational as well as the linear connection. However, ... |
1308.2206 | Marina Cort\^es | Marina Cort\^es and Lee Smolin | Energetic Causal Sets | 9 pages, no figures. Article companion to arXiv:1307.6167 | Phys. Rev. D 90, 044035 (2014) | 10.1103/PhysRevD.90.044035 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose an approach to quantum theory based on the energetic causal sets,
introduced in Cort\^{e}s and Smolin (2013). Fundamental processes are causal
sets whose events carry momentum and energy, which are transmitted along causal
links and conserved at each event. Energetic causal set models differ from
other spa... | [
{
"created": "Fri, 9 Aug 2013 18:48:37 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Nov 2015 21:36:15 GMT",
"version": "v2"
}
] | 2016-02-22 | [
[
"Cortês",
"Marina",
""
],
[
"Smolin",
"Lee",
""
]
] | We propose an approach to quantum theory based on the energetic causal sets, introduced in Cort\^{e}s and Smolin (2013). Fundamental processes are causal sets whose events carry momentum and energy, which are transmitted along causal links and conserved at each event. Energetic causal set models differ from other space... |
1311.1042 | Jose M. Carmona | J.M. Carmona, J.L Cortes, R. Gracia-Ruiz, N. Loret | Testing energy non-additivity in white dwarfs | 13 pages, 3 figures | Astroparticle Physics Volume 55, March 2014, Pages 17-25 | 10.1016/j.astropartphys.2014.01.003 | null | gr-qc astro-ph.SR hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a particular effect which can be expected in scenarios of
deviations from Special Relativity induced by Planckian physics: the loss of
additivity in the total energy of a system of particles. We argue about the
necessity to introduce a length scale to control the effects of non-additivity
for macroscopic ... | [
{
"created": "Tue, 5 Nov 2013 13:11:00 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Carmona",
"J. M.",
""
],
[
"Cortes",
"J. L",
""
],
[
"Gracia-Ruiz",
"R.",
""
],
[
"Loret",
"N.",
""
]
] | We consider a particular effect which can be expected in scenarios of deviations from Special Relativity induced by Planckian physics: the loss of additivity in the total energy of a system of particles. We argue about the necessity to introduce a length scale to control the effects of non-additivity for macroscopic ob... |
gr-qc/9710014 | Chris Chambers | Chris M. Chambers (Montana State), Patrick R. Brady (CalTech) and
Sergio M.C.V. Goncalves (Newcastle) | A Critical Look At Massive Scalar Field Collapse | 3 pages (including 2 postscript figures), Latex. Uses mprocl.sty
(included). To appear in the proceedings of `The Eighth Marcel Grossmann
Meeting on General Relativity', 22-27 June 1997, The Hebrew University,
Jerusalem, Israel | null | null | MSUPHY9718 | gr-qc | null | We present the findings of an investigation of critical behavior in the
collapse of spherically symmetric distributions of massive scalar field. Two
distinct types of phase transition are observed at the verge of black hole
formation and a criterion for determining when each type of transition will
occur is given.
| [
{
"created": "Thu, 2 Oct 1997 18:24:59 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Chambers",
"Chris M.",
"",
"Montana State"
],
[
"Brady",
"Patrick R.",
"",
"CalTech"
],
[
"Goncalves",
"Sergio M. C. V.",
"",
"Newcastle"
]
] | We present the findings of an investigation of critical behavior in the collapse of spherically symmetric distributions of massive scalar field. Two distinct types of phase transition are observed at the verge of black hole formation and a criterion for determining when each type of transition will occur is given. |
1709.02900 | Cosimo Bambi | Cosimo Bambi | Testing the Kerr black hole hypothesis with RELXILL_NK | 6 pages, 5 figures. Talk given at the "3rd Karl Schwarzschild
Meeting" (Frankfurt am Main, Germany, 24-28 July 2017). v2: refereed version | J. Phys.: Conf. Ser. 942 (2017) 012004 | 10.1088/1742-6596/942/1/012004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Astrophysical black hole candidates are thought to be the Kerr black holes of
general relativity. However, macroscopic deviations from the Kerr background
are predicted by a number of scenarios beyond Einstein's gravity. X-ray
reflection spectroscopy can be a powerful tool to probe the strong gravity
region of these ... | [
{
"created": "Sat, 9 Sep 2017 03:53:20 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jan 2018 10:49:49 GMT",
"version": "v2"
}
] | 2018-01-10 | [
[
"Bambi",
"Cosimo",
""
]
] | Astrophysical black hole candidates are thought to be the Kerr black holes of general relativity. However, macroscopic deviations from the Kerr background are predicted by a number of scenarios beyond Einstein's gravity. X-ray reflection spectroscopy can be a powerful tool to probe the strong gravity region of these ob... |
0810.1444 | Mubasher Jamil | Mubasher Jamil and Farook Rahaman | On the resolution of cosmic coincidence problem and phantom crossing
with triple interacting fluids | 22 pages, 6 figures, to appear in Eur. Phys. J. C (2009) | Eur. Phys. J. C 64 (2009) 97-105 | 10.1140/epjc/s10052-009-1134-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We here investigate a cosmological model in which three fluids interact with
each other involving certain coupling parameters and energy exchange rates. The
motivation of the problem stems from the puzzling `triple coincidence problem'
which naively asks why the cosmic energy densities of matter, radiation and
dark e... | [
{
"created": "Wed, 8 Oct 2008 14:14:50 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Nov 2008 16:11:22 GMT",
"version": "v2"
},
{
"created": "Sat, 7 Mar 2009 16:05:01 GMT",
"version": "v3"
},
{
"created": "Mon, 22 Jun 2009 03:41:41 GMT",
"version": "v4"
},
{
"cre... | 2015-05-13 | [
[
"Jamil",
"Mubasher",
""
],
[
"Rahaman",
"Farook",
""
]
] | We here investigate a cosmological model in which three fluids interact with each other involving certain coupling parameters and energy exchange rates. The motivation of the problem stems from the puzzling `triple coincidence problem' which naively asks why the cosmic energy densities of matter, radiation and dark ene... |
2407.13317 | Claudio Paganini | Jos\'e M. Isidro, Claudio F. Paganini, and Alessandro Pesci | Gravitation as a Statistical Theory on the Light Cone | null | null | null | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | In this paper, we will explore Padmanabhan's mesoscopic, statistical approach
to gravity [62] with a twist. The general picture of his approach is that
spacetime is made of large numbers of localized quantum degrees of freedom.
Padmanabhan assumed that the degrees of freedom of a given quantum state of
geometry contr... | [
{
"created": "Thu, 18 Jul 2024 09:18:53 GMT",
"version": "v1"
}
] | 2024-07-19 | [
[
"Isidro",
"José M.",
""
],
[
"Paganini",
"Claudio F.",
""
],
[
"Pesci",
"Alessandro",
""
]
] | In this paper, we will explore Padmanabhan's mesoscopic, statistical approach to gravity [62] with a twist. The general picture of his approach is that spacetime is made of large numbers of localized quantum degrees of freedom. Padmanabhan assumed that the degrees of freedom of a given quantum state of geometry contrib... |
gr-qc/0005071 | Alicia M. Sintes | A.M. Sintes, B.F. Schutz | Removing Line Interference from Gravitational Wave Interferometer Data | Latex 6 pages, 5 figures. To appear in: "Gravitational Wave Detection
II". Edt. Rie Sasaki; Universal Academy Press, Inc, Tokyo, Japan | null | null | null | gr-qc | null | We describe a procedure to identify and remove a class of interference lines
from gravitational wave interferometer data. We illustrate the usefulness of
this technique applying it to prototype interferometer data and removing all
those lines corresponding to the external electricity main supply and related
features.... | [
{
"created": "Tue, 16 May 2000 16:45:24 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sintes",
"A. M.",
""
],
[
"Schutz",
"B. F.",
""
]
] | We describe a procedure to identify and remove a class of interference lines from gravitational wave interferometer data. We illustrate the usefulness of this technique applying it to prototype interferometer data and removing all those lines corresponding to the external electricity main supply and related features. |
2109.02855 | Gabriele Umberto Varieschi | Gabriele U. Varieschi | Relativistic Fractional-Dimension Gravity | Minor changes and references added. 18 pages, including one figure.
Final version published in Universe, MDPI | Universe 7, no. 10: 387 (2021) | 10.3390/universe7100387 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper presents a relativistic version of Newtonian Fractional-Dimension
Gravity (NFDG), an alternative gravitational model recently introduced and
based on the theory of fractional-dimension spaces. This extended version -
Relativistic Fractional-Dimension Gravity (RFDG) - is based on other existing
theories in ... | [
{
"created": "Tue, 7 Sep 2021 04:22:23 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Oct 2021 19:38:15 GMT",
"version": "v2"
}
] | 2021-10-26 | [
[
"Varieschi",
"Gabriele U.",
""
]
] | This paper presents a relativistic version of Newtonian Fractional-Dimension Gravity (NFDG), an alternative gravitational model recently introduced and based on the theory of fractional-dimension spaces. This extended version - Relativistic Fractional-Dimension Gravity (RFDG) - is based on other existing theories in th... |
2009.00012 | Rodrigo Vicente | Lorenzo Annulli, Vitor Cardoso, Rodrigo Vicente | The response of ultralight dark matter to supermassive black holes and
binaries | 38 pages, 16 figures, RevTex4. Comments are welcome | Phys. Rev. D 102, 063022 (2020) | 10.1103/PhysRevD.102.063022 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scalar fields can give rise to confined structures, such as boson stars or
Q-balls. These objects are interesting hypothetical new "dark matter stars,"
but also good descriptions of dark matter haloes when the fields are
ultralight. Here, we study the dynamical response of such confined bosonic
structures when excite... | [
{
"created": "Mon, 31 Aug 2020 18:00:01 GMT",
"version": "v1"
}
] | 2020-09-30 | [
[
"Annulli",
"Lorenzo",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Vicente",
"Rodrigo",
""
]
] | Scalar fields can give rise to confined structures, such as boson stars or Q-balls. These objects are interesting hypothetical new "dark matter stars," but also good descriptions of dark matter haloes when the fields are ultralight. Here, we study the dynamical response of such confined bosonic structures when excited ... |
2204.05485 | Alessandro Santoni | Jorge Alfaro and Alessandro Santoni | Very Special Linear Gravity: A Gauge-Invariant Graviton Mass | Latex,6 pages | null | 10.1016/j.physletb.2022.137080 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | Linearized gravity in the Very Special Relativity (VSR) framework is
considered. We prove that this theory allows for a non-zero graviton mass $m_g$
without breaking gauge invariance nor modifying the relativistic dispersion
relation. We find the analytic solution for the new equations of motion in our
gauge choice, ... | [
{
"created": "Tue, 12 Apr 2022 02:33:57 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Aug 2023 02:00:03 GMT",
"version": "v2"
}
] | 2023-09-07 | [
[
"Alfaro",
"Jorge",
""
],
[
"Santoni",
"Alessandro",
""
]
] | Linearized gravity in the Very Special Relativity (VSR) framework is considered. We prove that this theory allows for a non-zero graviton mass $m_g$ without breaking gauge invariance nor modifying the relativistic dispersion relation. We find the analytic solution for the new equations of motion in our gauge choice, ve... |
1208.0804 | Roberto Giambo' | F. Cipolletta, R. Giamb\`o | Collapse of spherical charged anisotropic fluid spacetimes | 13 pages, 2 figures. Version to appear on Class Quantum Grav | null | 10.1088/0264-9381/29/24/245008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A class of spherical collapsing exact solutions with electromagnetic charge
is derived. This class of solutions -- in general anisotropic -- contains
however as a particular case the charged dust model already known in
literature. Under some regularity assumptions that in the uncharged case give
rise to naked singula... | [
{
"created": "Fri, 3 Aug 2012 17:43:12 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Oct 2012 07:27:37 GMT",
"version": "v2"
}
] | 2015-06-11 | [
[
"Cipolletta",
"F.",
""
],
[
"Giambò",
"R.",
""
]
] | A class of spherical collapsing exact solutions with electromagnetic charge is derived. This class of solutions -- in general anisotropic -- contains however as a particular case the charged dust model already known in literature. Under some regularity assumptions that in the uncharged case give rise to naked singulari... |
1909.08412 | Mikhail Zubkov Dr | M.A. Zubkov | Emergent gravity in superplastic crystals and cosmological constant
problem | Latex, 13 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss emergent gravity in the superplastic crystals. We restrict
ourselves by the consideration of the gapped (massive) fermions coupled to
gravity. In this approach the stress - energy tensor may be defined in such a
way, that being integrated over the whole volume it is a topological invariant
provided that th... | [
{
"created": "Wed, 18 Sep 2019 12:52:18 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Sep 2019 00:25:02 GMT",
"version": "v2"
},
{
"created": "Thu, 23 Jan 2020 16:28:15 GMT",
"version": "v3"
},
{
"created": "Thu, 20 Feb 2020 14:22:38 GMT",
"version": "v4"
}
] | 2020-02-21 | [
[
"Zubkov",
"M. A.",
""
]
] | We discuss emergent gravity in the superplastic crystals. We restrict ourselves by the consideration of the gapped (massive) fermions coupled to gravity. In this approach the stress - energy tensor may be defined in such a way, that being integrated over the whole volume it is a topological invariant provided that the ... |
gr-qc/9808057 | Yungui Gong | Yungui Gong | Constraints on Inflation in Einstein-Brans-Dicke Frame | 6 pages, Revtex file, typos added | Phys. Rev. D 59, 083507 (1999) | 10.1103/PhysRevD.59.083507 | null | gr-qc | null | The density perturbation during inflation seeds the large scale structure. We
consider both new inflation-type and chaotic inflation-type potentials in the
framework of Einstein-Brans-Dicke gravity. The density perturbation gives
strong constraints on the parameters in these potentials. For both potentials,
the const... | [
{
"created": "Thu, 20 Aug 1998 16:37:27 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Mar 1999 22:54:21 GMT",
"version": "v2"
}
] | 2016-08-25 | [
[
"Gong",
"Yungui",
""
]
] | The density perturbation during inflation seeds the large scale structure. We consider both new inflation-type and chaotic inflation-type potentials in the framework of Einstein-Brans-Dicke gravity. The density perturbation gives strong constraints on the parameters in these potentials. For both potentials, the constra... |
0905.1929 | Holger M\"uller | Keng-Yeow Chung, Sheng-wey Chiow, Sven Herrmann, Steven Chu, and
Holger Mueller | Atom interferometry tests of local Lorentz invariance in gravity and
electrodynamics | Reference added; corrected factor of 2 in Tab. IV and V. 12 pages, 4
figures, 6 tables | Phys.Rev.D80:016002,2009 | 10.1103/PhysRevD.80.016002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present atom-interferometer tests of the local Lorentz invariance of
post-Newtonian gravity. An experiment probing for anomalous vertical gravity on
Earth, which has already been performed by us, uses the highest-resolution
atomic gravimeter so far. The influence of Lorentz violation in electrodynamics
is also tak... | [
{
"created": "Tue, 12 May 2009 18:30:36 GMT",
"version": "v1"
},
{
"created": "Sun, 31 May 2009 19:30:29 GMT",
"version": "v2"
}
] | 2010-04-15 | [
[
"Chung",
"Keng-Yeow",
""
],
[
"Chiow",
"Sheng-wey",
""
],
[
"Herrmann",
"Sven",
""
],
[
"Chu",
"Steven",
""
],
[
"Mueller",
"Holger",
""
]
] | We present atom-interferometer tests of the local Lorentz invariance of post-Newtonian gravity. An experiment probing for anomalous vertical gravity on Earth, which has already been performed by us, uses the highest-resolution atomic gravimeter so far. The influence of Lorentz violation in electrodynamics is also taken... |
0806.0153 | Ettore Minguzzi | E. Minguzzi | Chronological spacetimes without lightlike lines are stably causal | 20 pages, 6 figures | Commun.Math.Phys.288:801-819,2009 | 10.1007/s00220-009-0784-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The statement of the title is proved. It implies that under physically
reasonable conditions, spacetimes which are free from singularities are
necessarily stably causal and hence admit a time function. Read as a
singularity theorem it states that if there is some form of causality violation
on spacetime then either i... | [
{
"created": "Sun, 1 Jun 2008 15:43:15 GMT",
"version": "v1"
}
] | 2009-05-12 | [
[
"Minguzzi",
"E.",
""
]
] | The statement of the title is proved. It implies that under physically reasonable conditions, spacetimes which are free from singularities are necessarily stably causal and hence admit a time function. Read as a singularity theorem it states that if there is some form of causality violation on spacetime then either it ... |
1311.1297 | Rakesh Tibrewala | Rakesh Tibrewala | Inhomogeneities, loop quantum gravity corrections, constraint algebra
and general covariance | 22 pages, 2 figures, matches published version | Class. Quantum Grav. 31 (2014) 055010 | 10.1088/0264-9381/31/5/055010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Loop quantum gravity corrections, in the presence of inhomogeneities, can
lead to a deformed constraint algebra. Such a deformation implies that the
effective theory is no longer generally covariant. As a consequence, the
geometrical concepts used in the classical theory lose their meaning. In the
present paper we pr... | [
{
"created": "Wed, 6 Nov 2013 06:41:27 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Nov 2013 09:11:00 GMT",
"version": "v2"
},
{
"created": "Tue, 1 Apr 2014 06:42:45 GMT",
"version": "v3"
}
] | 2015-06-17 | [
[
"Tibrewala",
"Rakesh",
""
]
] | Loop quantum gravity corrections, in the presence of inhomogeneities, can lead to a deformed constraint algebra. Such a deformation implies that the effective theory is no longer generally covariant. As a consequence, the geometrical concepts used in the classical theory lose their meaning. In the present paper we prop... |
1708.01714 | Abolhassan Mohammadi | K. Sayar, A. Mohammadi, L. Akhtari, Kh. Saaidi | Hamilton-Jacobi formalism to warm inflationary scenario | 12 pages, 18 figures | Phys. Rev. D 95, 023501 (2017) | 10.1103/PhysRevD.95.023501 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hamilton-Jacobi formalism as a powerful method is being utilized to
reconsider warm inflationary scenario, where the scalar field as the main
component deriving inflation interacts with other field. Separating the context
to strong and weak dissipative regimes, the goal is followed for two popular
function of dissipa... | [
{
"created": "Sat, 5 Aug 2017 06:30:55 GMT",
"version": "v1"
}
] | 2017-08-08 | [
[
"Sayar",
"K.",
""
],
[
"Mohammadi",
"A.",
""
],
[
"Akhtari",
"L.",
""
],
[
"Saaidi",
"Kh.",
""
]
] | Hamilton-Jacobi formalism as a powerful method is being utilized to reconsider warm inflationary scenario, where the scalar field as the main component deriving inflation interacts with other field. Separating the context to strong and weak dissipative regimes, the goal is followed for two popular function of dissipati... |
2407.03907 | Liang-Bi Wu | Jia-Ning Chen, Liang-Bi Wu and Zong-Kuan Guo | The pseudospectrum and transient of Kaluza-Klein black holes in
Einstein-Gauss-Bonnet gravity | 22 pages, 14 figures, 1 table | null | null | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | The spectrum and dynamical instability, as well as the transient effect of
the tensor perturbation for the so-called Maeda-Dadhich black hole, a type of
Kaluza-Klein black hole, in Einstein-Gauss-Bonnet gravity have been
investigated in framework of pseudospectrum. We cast the problem of solving
quasinormal modes (QN... | [
{
"created": "Thu, 4 Jul 2024 13:02:48 GMT",
"version": "v1"
}
] | 2024-07-08 | [
[
"Chen",
"Jia-Ning",
""
],
[
"Wu",
"Liang-Bi",
""
],
[
"Guo",
"Zong-Kuan",
""
]
] | The spectrum and dynamical instability, as well as the transient effect of the tensor perturbation for the so-called Maeda-Dadhich black hole, a type of Kaluza-Klein black hole, in Einstein-Gauss-Bonnet gravity have been investigated in framework of pseudospectrum. We cast the problem of solving quasinormal modes (QNMs... |
1711.01880 | Valerio Faraoni | Valerio Faraoni, Adriana M. Cardini, and Wen-Jian Chung (Bishop's
University) | Simultaneous baldness and cosmic baldness and Kottler spacetime | 9 pages, no figures. Comments welcome | Phys. Rev. D 97, 024046 (2018) | 10.1103/PhysRevD.97.024046 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The uniqueness of the Kottler/Schwarzschild-de Sitter solution of the vacuum
Einstein equations with positive cosmological constant is discussed and certain
putative alternatives are shown to either solve different equations or to be
the KSdS solution in disguise. A simultaneous no-hair and cosmic no-hair
theorem for... | [
{
"created": "Mon, 6 Nov 2017 13:33:19 GMT",
"version": "v1"
}
] | 2018-02-07 | [
[
"Faraoni",
"Valerio",
"",
"Bishop's\n University"
],
[
"Cardini",
"Adriana M.",
"",
"Bishop's\n University"
],
[
"Chung",
"Wen-Jian",
"",
"Bishop's\n University"
]
] | The uniqueness of the Kottler/Schwarzschild-de Sitter solution of the vacuum Einstein equations with positive cosmological constant is discussed and certain putative alternatives are shown to either solve different equations or to be the KSdS solution in disguise. A simultaneous no-hair and cosmic no-hair theorem for t... |
0802.0542 | Young-Jai Park | Yong-Wan Kim and Young-Jai Park | Entropy of (1+1)-dimensional charged black hole to all orders in the
Planck length | 10 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the statistical entropy of a scalar field on the (1+1)-dimensional
Maxwell-dilaton background without an artificial cutoff considering corrections
to all orders in the Planck length from a generalized uncertainty principle
(GUP) on the quantum state density. In contrast to the previous results of the
higher ... | [
{
"created": "Tue, 5 Feb 2008 02:02:50 GMT",
"version": "v1"
}
] | 2008-02-06 | [
[
"Kim",
"Yong-Wan",
""
],
[
"Park",
"Young-Jai",
""
]
] | We study the statistical entropy of a scalar field on the (1+1)-dimensional Maxwell-dilaton background without an artificial cutoff considering corrections to all orders in the Planck length from a generalized uncertainty principle (GUP) on the quantum state density. In contrast to the previous results of the higher di... |
1902.11180 | Andreas Maier | J. Bl\"umlein, A. Maier, and P. Marquard | Five-Loop Static Contribution to the Gravitational Interaction Potential
of Two Point Masses | 15 pages, 4 figures. Journal version plus corrected typographical
errors in formula for master integral M_{72} | Phys.Lett.B 800 (2020) 135100 | 10.1016/j.physletb.2019.135100 | DESY 19-029, DO-TH 19/01 | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the static contribution to the gravitational interaction potential
of two point masses in the velocity-independent five-loop (and 5th
post-Newtonian) approximation to the harmonic coordinates effective action in a
direct calculation. The computation is performed using effective field methods
based on Feynm... | [
{
"created": "Thu, 28 Feb 2019 16:00:43 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Jul 2022 08:27:11 GMT",
"version": "v2"
}
] | 2022-07-26 | [
[
"Blümlein",
"J.",
""
],
[
"Maier",
"A.",
""
],
[
"Marquard",
"P.",
""
]
] | We compute the static contribution to the gravitational interaction potential of two point masses in the velocity-independent five-loop (and 5th post-Newtonian) approximation to the harmonic coordinates effective action in a direct calculation. The computation is performed using effective field methods based on Feynman... |
gr-qc/0603110 | Martin Bojowald | Martin Bojowald | Quantum Cosmology | 10 pages, published in Encyclopedia of Mathematical Physics, eds.
J.-P. Franccoise, G. L. Naber and Tsou S. T., Oxford: Elsevier, 2006 (ISBN
978-0-1251-2666-3), volume 4, page 153 | null | null | AEI-2005-134, IGPG-06/3-1 | gr-qc | null | Quantum cosmology in general denotes the application of quantum physics to
the whole universe and thus gives rise to many realizations and examples,
covering problems at different mathematical and conceptual levels. It is
related to quantum gravity and more specifically describes the application to
cosmological situa... | [
{
"created": "Tue, 28 Mar 2006 17:44:20 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bojowald",
"Martin",
""
]
] | Quantum cosmology in general denotes the application of quantum physics to the whole universe and thus gives rise to many realizations and examples, covering problems at different mathematical and conceptual levels. It is related to quantum gravity and more specifically describes the application to cosmological situati... |
2004.02714 | Damian Ejlli Dr. | Damian Ejlli | Graviton-photon mixing. Exact solution in a constant magnetic field | 9 pages. A typo present in Eq. (19) which also propagated to Eq. (20)
and Eq. (22) has been fixed. This typo was a missing $\omega^2$ in these
equations | JHEP 06 (2020) 029 | 10.1007/JHEP06(2020)029 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work I study the effect of graviton-photon mixing in a constant
external magnetic field and find for the first time in the literature exact
solution of the equations of motion. In particular, I apply the effect of
graviton-photon mixing to the case of interaction of gravitational waves with
an external magnet... | [
{
"created": "Mon, 6 Apr 2020 14:53:15 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Jun 2020 17:48:11 GMT",
"version": "v2"
},
{
"created": "Tue, 14 Jul 2020 14:57:04 GMT",
"version": "v3"
}
] | 2020-07-15 | [
[
"Ejlli",
"Damian",
""
]
] | In this work I study the effect of graviton-photon mixing in a constant external magnetic field and find for the first time in the literature exact solution of the equations of motion. In particular, I apply the effect of graviton-photon mixing to the case of interaction of gravitational waves with an external magnetic... |
1504.08315 | Israel Quiros | Ricardo Garc\'ia-Salcedo, Tam\'e Gonz\'alez, Israel Quiros | Brans--Dicke cosmology does not have the $\Lambda$CDM phase as an
universal attractor | 16 pages, 6 eps figures. A discussion on the difference between the
Brans-Dicke de Sitter point and the general relativity de Sitter solution has
been included. New bibliographyc references added | Phys. Rev. D 92, 124056 (2015) | 10.1103/PhysRevD.92.124056 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we seek for relevant information on the asymptotic cosmological
dynamics of the Brans--Dicke theory of gravity for several self-interaction
potentials. By means of the simplest tools of the dynamical systems theory, it
is shown that the general relativity de Sitter solution is an attractor of the
Jordan... | [
{
"created": "Thu, 30 Apr 2015 17:41:55 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Jun 2015 00:22:01 GMT",
"version": "v2"
}
] | 2015-12-30 | [
[
"García-Salcedo",
"Ricardo",
""
],
[
"González",
"Tamé",
""
],
[
"Quiros",
"Israel",
""
]
] | In this paper we seek for relevant information on the asymptotic cosmological dynamics of the Brans--Dicke theory of gravity for several self-interaction potentials. By means of the simplest tools of the dynamical systems theory, it is shown that the general relativity de Sitter solution is an attractor of the Jordan f... |
1903.03483 | Roman Konoplya | R. A. Konoplya, A. F. Zinhailo, Z. Stuchl\'ik | Quasinormal modes, scattering and Hawking radiation in the vicinity of
Einstein-dilaton-Gauss-Bonnet black hole | 10 pages, revtex, minor changes | Phys. Rev. D 99, 124042 (2019) | 10.1103/PhysRevD.99.124042 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Classical (quasinormal) and quantum (Hawking) radiations are investigated for
test fields in the background of a four dimensional, spherically symmetric and
asymptotically flat black hole in the Einstein-dilaton-Gauss-Bonnet (EdGB)
theory. The geometry of the EdGB black hole deviates from the Schwarzschild
geometry o... | [
{
"created": "Fri, 8 Mar 2019 15:07:03 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Mar 2019 11:50:37 GMT",
"version": "v2"
}
] | 2019-07-03 | [
[
"Konoplya",
"R. A.",
""
],
[
"Zinhailo",
"A. F.",
""
],
[
"Stuchlík",
"Z.",
""
]
] | Classical (quasinormal) and quantum (Hawking) radiations are investigated for test fields in the background of a four dimensional, spherically symmetric and asymptotically flat black hole in the Einstein-dilaton-Gauss-Bonnet (EdGB) theory. The geometry of the EdGB black hole deviates from the Schwarzschild geometry onl... |
1002.1036 | Sergey G. Klimenko | The LIGO Scientific Collaboration and the Virgo Collaboration | All-sky search for gravitational-wave bursts in the first joint
LIGO-GEO-Virgo run | 20 pages, 9 figures, 8 tables; submitted to Phys. Rev. D | Phys.Rev.D81:102001,2010 | 10.1103/PhysRevD.81.102001 | LIGO-P0900108-v6 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present results from an all-sky search for unmodeled gravitational-wave
bursts in the data collected by the LIGO, GEO 600 and Virgo detectors between
November 2006 and October 2007. The search is performed by three different
analysis algorithms over the frequency band 50-6000 Hz. Data are analyzed for
times with a... | [
{
"created": "Thu, 4 Feb 2010 16:44:12 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Mar 2010 20:46:56 GMT",
"version": "v2"
}
] | 2012-08-27 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
]
] | We present results from an all-sky search for unmodeled gravitational-wave bursts in the data collected by the LIGO, GEO 600 and Virgo detectors between November 2006 and October 2007. The search is performed by three different analysis algorithms over the frequency band 50-6000 Hz. Data are analyzed for times with at ... |
1610.00059 | Ling Sun | L. Sun, A. Melatos, P. D. Lasky, C. T. Y. Chung, N. S. Darman | Cross-correlation search for continuous gravitational waves from a
compact object in SNR 1987A in LIGO Science Run 5 | null | Phys. Rev. D 94, 082004 (2016) | 10.1103/PhysRevD.94.082004 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the results of a cross-correlation search for gravitational waves
from SNR 1987A using the second year of LIGO Science Run 5 data. The frequency
band 75--450\,Hz is searched. No evidence of gravitational waves is found. A
90\% confidence upper limit of $h_0 \leq 3.8\times10^{-25}$ is placed on the
gravitat... | [
{
"created": "Fri, 30 Sep 2016 23:52:56 GMT",
"version": "v1"
}
] | 2016-10-21 | [
[
"Sun",
"L.",
""
],
[
"Melatos",
"A.",
""
],
[
"Lasky",
"P. D.",
""
],
[
"Chung",
"C. T. Y.",
""
],
[
"Darman",
"N. S.",
""
]
] | We present the results of a cross-correlation search for gravitational waves from SNR 1987A using the second year of LIGO Science Run 5 data. The frequency band 75--450\,Hz is searched. No evidence of gravitational waves is found. A 90\% confidence upper limit of $h_0 \leq 3.8\times10^{-25}$ is placed on the gravitatio... |
gr-qc/0511110 | Kourosh Nozari | Kourosh Nozari and S. Hamid Mehdipour | Quantum-Corrected Black Hole Thermodynamics in Extra Dimensions | 19 pages, 2 figures | Int.J.Mod.Phys.A21:4979-4992,2006 | 10.1142/S0217751X06031570 | null | gr-qc | null | Bekenstein-Hawking formalism of black hole thermodynamics should be modified
to incorporate quantum gravitational effects. Generalized Uncertainty
Principle(GUP) provides a suitable framework to perform such modifications. In
this paper, we consider a general form of GUP to find black hole thermodynamics
in a model u... | [
{
"created": "Sat, 19 Nov 2005 12:19:31 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jan 2006 14:31:18 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Nozari",
"Kourosh",
""
],
[
"Mehdipour",
"S. Hamid",
""
]
] | Bekenstein-Hawking formalism of black hole thermodynamics should be modified to incorporate quantum gravitational effects. Generalized Uncertainty Principle(GUP) provides a suitable framework to perform such modifications. In this paper, we consider a general form of GUP to find black hole thermodynamics in a model uni... |
1412.7403 | Vladimir Khatsymovsky | V. M. Khatsymovsky | Faddeev gravity action on the piecewise constant fundamental vector
fields | 8 pages, reported on the conference "Quantum Field Theory and Gravity
2014" (July 28 - August 3 2014, Tomsk, Russia) | TSPU Bulletin, No. 12(153), pp. 131-134, 2014 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the Faddeev formulation of gravity, the metric is regarded as composite
field, bilinear of $d = 10$ 4-vector fields. We derive the minisuperspace
(discrete) Faddeev action by evaluating the Faddeev action on the spacetime
composed of the (flat) 4-simplices with constant 4-vector fields. This is an
analog of the Re... | [
{
"created": "Tue, 23 Dec 2014 15:23:47 GMT",
"version": "v1"
}
] | 2014-12-24 | [
[
"Khatsymovsky",
"V. M.",
""
]
] | In the Faddeev formulation of gravity, the metric is regarded as composite field, bilinear of $d = 10$ 4-vector fields. We derive the minisuperspace (discrete) Faddeev action by evaluating the Faddeev action on the spacetime composed of the (flat) 4-simplices with constant 4-vector fields. This is an analog of the Regg... |
1611.05524 | Andrew J. S. Hamilton | Andrew J. S. Hamilton | Hawking radiation inside a Schwarzschild black hole | v1: 21 pages, 7 figures. v2: more references. v3: additional material
on Heun functions. v4: 45 pages, 10 figures; typos fixed, new sections on the
illusory horizon, and on 1+1 dimensions | Gen. Rel. Grav. (2018) 50:50 | 10.1007/s10714-018-2369-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The boundary of any observer's spacetime is the boundary that divides what
the observer can see from what they cannot see. The boundary of an observer's
spacetime in the presence of a black hole is not the true (future event)
horizon of the black hole, but rather the illusory horizon, the dimming,
redshifting surface... | [
{
"created": "Thu, 17 Nov 2016 01:32:33 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Mar 2017 23:08:57 GMT",
"version": "v2"
},
{
"created": "Thu, 31 Aug 2017 16:15:54 GMT",
"version": "v3"
},
{
"created": "Wed, 16 May 2018 15:13:11 GMT",
"version": "v4"
}
] | 2018-05-17 | [
[
"Hamilton",
"Andrew J. S.",
""
]
] | The boundary of any observer's spacetime is the boundary that divides what the observer can see from what they cannot see. The boundary of an observer's spacetime in the presence of a black hole is not the true (future event) horizon of the black hole, but rather the illusory horizon, the dimming, redshifting surface o... |
2206.07603 | Davide Batic | Davide Batic and Joud Mojahed Faraji and Marek Nowakowski and Nicolas
Maldonaldo Baracaldo | Rings of light caused by gravitational waves | 11 pages, 2 figures | Scientific Reports 12, 9688 (2022) | 10.1038/s41598-022-13915-6 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reconsider the case of the geodesic motion of a massive and massless beam
of test particles in a gravitational wave. In particular, we use a direct
Lagrangian approach which simplifies the calculation. Our findings differ
partly from previously performed calculations The final result can be
interpreted as rings of... | [
{
"created": "Wed, 15 Jun 2022 15:32:39 GMT",
"version": "v1"
}
] | 2022-06-16 | [
[
"Batic",
"Davide",
""
],
[
"Faraji",
"Joud Mojahed",
""
],
[
"Nowakowski",
"Marek",
""
],
[
"Baracaldo",
"Nicolas Maldonaldo",
""
]
] | We reconsider the case of the geodesic motion of a massive and massless beam of test particles in a gravitational wave. In particular, we use a direct Lagrangian approach which simplifies the calculation. Our findings differ partly from previously performed calculations The final result can be interpreted as rings of l... |
gr-qc/9401024 | Paulo Crawford | Jo\~ao P. Abreu, Paulo Crawford and Jos\'e P. Mimoso | Exact Conformal Scalar Field Cosmologies | Latex, 27 pages plus 16 figures (not included, available from the
authors upon request) DFFCUL-94-01-01 | Class.Quant.Grav.11:1919-1940,1994 | 10.1088/0264-9381/11/8/002 | null | gr-qc | null | New exact solutions of Einstein's gravity coupled to a self-interacting
conformal scalar field are derived in this work. Our approach extends a
solution-generating technique originally introduced by Bekenstein for massless
conformal scalar fields. Solutions are obtained for a
Friedmann-Robertson-Walker geometry both ... | [
{
"created": "Tue, 25 Jan 1994 11:22:34 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Abreu",
"João P.",
""
],
[
"Crawford",
"Paulo",
""
],
[
"Mimoso",
"José P.",
""
]
] | New exact solutions of Einstein's gravity coupled to a self-interacting conformal scalar field are derived in this work. Our approach extends a solution-generating technique originally introduced by Bekenstein for massless conformal scalar fields. Solutions are obtained for a Friedmann-Robertson-Walker geometry both fo... |
gr-qc/0412031 | Samad Khakshournia | Samad Khakshournia and Reza Mansouri | Dynamics of a Spherical Null Shell within the Distributional Formalism | 7 pages | null | null | null | gr-qc | null | Dynamics of a null thin shell immersed in a generic spherically symmetric
spacetime is obtained within the distributional formalism. It has been shown
that the distributional formalism leads to the same result as in the
conventional formalism.
| [
{
"created": "Tue, 7 Dec 2004 14:49:38 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Khakshournia",
"Samad",
""
],
[
"Mansouri",
"Reza",
""
]
] | Dynamics of a null thin shell immersed in a generic spherically symmetric spacetime is obtained within the distributional formalism. It has been shown that the distributional formalism leads to the same result as in the conventional formalism. |
1002.3478 | Sergey Sushkov | Emmanuel N. Saridakis, Sergey V. Sushkov | Quintessence and phantom cosmology with non-minimal derivative coupling | 8 pages, 8 figures | Phys.Rev.D81:083510,2010 | 10.1103/PhysRevD.81.083510 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate cosmological scenarios with a non-minimal derivative coupling
between the scalar field and the curvature, examining both the quintessence and
the phantom cases in zero and constant potentials. In general, we find that the
universe transits from one de Sitter solution to another, determined by the
coupl... | [
{
"created": "Thu, 18 Feb 2010 10:48:47 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Feb 2010 11:44:54 GMT",
"version": "v2"
}
] | 2010-04-21 | [
[
"Saridakis",
"Emmanuel N.",
""
],
[
"Sushkov",
"Sergey V.",
""
]
] | We investigate cosmological scenarios with a non-minimal derivative coupling between the scalar field and the curvature, examining both the quintessence and the phantom cases in zero and constant potentials. In general, we find that the universe transits from one de Sitter solution to another, determined by the couplin... |
1111.3207 | Sauro Succi F | S. Succi | Analogy between turbulence and quantum gravity: beyond Kolmogorov's 1941
theory | Sliglty modified version of the article about to appear in IJMPC | null | 10.1142/S0129183112500015 | null | gr-qc nlin.CD | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Simple arguments based on the general properties of quantum fluctuations have
been recently shown to imply that quantum fluctuations of spacetime obey the
same scaling laws of the velocity fluctuations in a homogeneous incompressible
turbulent flow, as described by Kolmogorov 1941 (K41) scaling theory. Less
noted, ho... | [
{
"created": "Mon, 14 Nov 2011 13:29:59 GMT",
"version": "v1"
}
] | 2015-06-03 | [
[
"Succi",
"S.",
""
]
] | Simple arguments based on the general properties of quantum fluctuations have been recently shown to imply that quantum fluctuations of spacetime obey the same scaling laws of the velocity fluctuations in a homogeneous incompressible turbulent flow, as described by Kolmogorov 1941 (K41) scaling theory. Less noted, howe... |
gr-qc/9610048 | null | Hisashi Onozawa (Tokyo Inst. of Tech.) | A detailed study of quasinormal frequencies of the Kerr black hole | REVTEX, 15 pages, 7 eps figures | Phys.Rev. D55 (1997) 3593-3602 | 10.1103/PhysRevD.55.3593 | TIT/HEP-344/COSMO-78 | gr-qc | null | We compute the quasinormal frequencies of the Kerr black hole using a
continued fraction method. The continued fraction method first proposed by
Leaver is still the only known method stable and accurate for the numerical
determination of the Kerr quasinormal frequencies. We numerically obtain not
only the slowly but ... | [
{
"created": "Tue, 22 Oct 1996 14:01:50 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Onozawa",
"Hisashi",
"",
"Tokyo Inst. of Tech."
]
] | We compute the quasinormal frequencies of the Kerr black hole using a continued fraction method. The continued fraction method first proposed by Leaver is still the only known method stable and accurate for the numerical determination of the Kerr quasinormal frequencies. We numerically obtain not only the slowly but al... |
2011.07773 | Qing-Hua Zhu | Zhe Chang and Qing-Hua Zhu | Spatial variation of the fine-structure constant and Hubble's law in
anisotropic coordinate of Friedmann-Lemaitre-Robertson-Walker space-time | 22 pages, 9 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent updated results of quasar spectra suggested a 3.9$\sigma$ significance
of spatial variation of the fine-structure constant. Theoretically, it is
important to examine whether the fine-structure constant, as a fundamental
constant in quantum theory, is possible varying with space and time. In this
paper, we expl... | [
{
"created": "Mon, 16 Nov 2020 08:13:35 GMT",
"version": "v1"
}
] | 2020-11-17 | [
[
"Chang",
"Zhe",
""
],
[
"Zhu",
"Qing-Hua",
""
]
] | Recent updated results of quasar spectra suggested a 3.9$\sigma$ significance of spatial variation of the fine-structure constant. Theoretically, it is important to examine whether the fine-structure constant, as a fundamental constant in quantum theory, is possible varying with space and time. In this paper, we explor... |
gr-qc/9408026 | null | D.H. Coule | Canonical measure and the flatness of a FRW universe | 22 pages , Latex. University of Cape Town, report 94 | Class.Quant.Grav.12:455-470,1995 | 10.1088/0264-9381/12/2/015 | null | gr-qc | null | We consider the claim of Hawking and Page that the canonical measure applied
to a FRW universe with a massive scalar field can solve the flatness problem
regardless of inflation. By considering a general potential we are able to
understand how the ambiguity for $\Omega$ found by Page in the $R^2$ theory is
present wh... | [
{
"created": "Fri, 19 Aug 1994 16:19:55 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Coule",
"D. H.",
""
]
] | We consider the claim of Hawking and Page that the canonical measure applied to a FRW universe with a massive scalar field can solve the flatness problem regardless of inflation. By considering a general potential we are able to understand how the ambiguity for $\Omega$ found by Page in the $R^2$ theory is present when... |
2202.00018 | Carlos O. Lousto | James Healy and Carlos O. Lousto (RIT) | The Fourth RIT binary black hole simulations catalog: Extension to
Eccentric Orbits | 30 pages, 8 figures, 6 tables | null | 10.1103/PhysRevD.105.124010 | null | gr-qc astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This fourth release of the RIT public catalog of numerical relativity
black-hole-binary waveforms \url{http://ccrg.rit.edu/~RITCatalog} consists of
1881 accurate simulations that include 446 precessing and 611 nonprecessing
quasicircular/inspiraling binary systems with mass ratios $q=m_1/m_2$ in the
range $1/128\leq ... | [
{
"created": "Mon, 31 Jan 2022 19:00:01 GMT",
"version": "v1"
}
] | 2022-06-22 | [
[
"Healy",
"James",
"",
"RIT"
],
[
"Lousto",
"Carlos O.",
"",
"RIT"
]
] | This fourth release of the RIT public catalog of numerical relativity black-hole-binary waveforms \url{http://ccrg.rit.edu/~RITCatalog} consists of 1881 accurate simulations that include 446 precessing and 611 nonprecessing quasicircular/inspiraling binary systems with mass ratios $q=m_1/m_2$ in the range $1/128\leq q\... |
gr-qc/0407074 | Ghanashyam Date | Ghanashyam Date and Golam Mortuza Hossain | Genericness of Big Bounce in isotropic loop quantum cosmology | 4 pages, revtex4, two figures. In version 2, only e-print archive
numbers are corrected. In version 3 a Reference is added. Final version to
appear in Phys. Rev. Lett. Some explanations improved | Phys.Rev.Lett. 94 (2005) 011302 | 10.1103/PhysRevLett.94.011302 | IMSc/2004/07/29 | gr-qc astro-ph hep-th | null | The absence of isotropic singularity in loop quantum cosmology can be
understood in an effective classical description as the universe exhibiting a
Big Bounce. We show that with scalar matter field, the big bounce is generic in
the sense that it is independent of quantization ambiguities and details of
scalar field d... | [
{
"created": "Mon, 19 Jul 2004 22:05:27 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Jul 2004 04:05:14 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Oct 2004 20:50:20 GMT",
"version": "v3"
},
{
"created": "Wed, 8 Dec 2004 19:48:09 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Date",
"Ghanashyam",
""
],
[
"Hossain",
"Golam Mortuza",
""
]
] | The absence of isotropic singularity in loop quantum cosmology can be understood in an effective classical description as the universe exhibiting a Big Bounce. We show that with scalar matter field, the big bounce is generic in the sense that it is independent of quantization ambiguities and details of scalar field dyn... |
2307.04419 | Zhu Yi | Zhi-Qiang You, Zhu Yi and You Wu | Constraints on primordial curvature power spectrum with pulsar timing
arrays | 21 pages, 1 table, 7 figures, version accepted by JCAP | JCAP11(2023)065 | 10.1088/1475-7516/2023/11/065 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The stochastic signal detected by NANOGrav, PPTA, EPTA, and CPTA can be
explained by the scalar-induced gravitational waves. In order to determine the
scalar-induced gravitational waves model that best fits the stochastic signal,
we employ both single- and double-peak parameterizations for the power spectrum
of the p... | [
{
"created": "Mon, 10 Jul 2023 08:51:04 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Oct 2023 14:16:11 GMT",
"version": "v2"
}
] | 2023-11-16 | [
[
"You",
"Zhi-Qiang",
""
],
[
"Yi",
"Zhu",
""
],
[
"Wu",
"You",
""
]
] | The stochastic signal detected by NANOGrav, PPTA, EPTA, and CPTA can be explained by the scalar-induced gravitational waves. In order to determine the scalar-induced gravitational waves model that best fits the stochastic signal, we employ both single- and double-peak parameterizations for the power spectrum of the pri... |
gr-qc/0509102 | Inoka Sahabandu | C.Sahabandu, P.Suranyi, C.Vaz, L.C.R. Wijewardhana | Thermodynamics of static black objects in D dimensional
Einstein-Gauss-Bonnet gravity with D-4 compact dimensions | An error in the computation of entropy was corrected by properly
taking into account the ADM mass, and the gravitational tension due to
compactification. Verified that the results agree with the geometric entropy
formula of Fursaev and Solodukhin. Conclusions remain unchanged | Phys.Rev. D73 (2006) 044009 | 10.1103/PhysRevD.73.044009 | null | gr-qc astro-ph hep-th | null | We investigate the thermodynamics of static black objects such as black
holes, black strings and their generalizations to D dimensions (`black branes')
in a gravitational theory containing the four dimensional Gauss-Bonnet term in
the action, when D-4 of the dimensions are compactified on a torus. The
entropies of bl... | [
{
"created": "Tue, 27 Sep 2005 04:04:44 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Oct 2005 04:28:26 GMT",
"version": "v2"
},
{
"created": "Mon, 19 Dec 2005 23:15:03 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Sahabandu",
"C.",
""
],
[
"Suranyi",
"P.",
""
],
[
"Vaz",
"C.",
""
],
[
"Wijewardhana",
"L. C. R.",
""
]
] | We investigate the thermodynamics of static black objects such as black holes, black strings and their generalizations to D dimensions (`black branes') in a gravitational theory containing the four dimensional Gauss-Bonnet term in the action, when D-4 of the dimensions are compactified on a torus. The entropies of blac... |
1509.02399 | Jos\'e Villanueva | W. S. Hip\'olito-Ricaldi and J. R. Villanueva | A Jacobian generalization of the pseudo Nambu-Goldstone bosons potential | 20 pages, 10 figures; Accepted for publication in IJMPD | Int. J. Mod. Phys. D 0, 1750019 (2016) | 10.1142/S0218271817500195 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We enlarge the classes of inflaton and quintessence fields by generalizing
the pseudo Nambu--Goldstone boson potential by means of elliptic Jacobian
functions, which are characterized by a parameter $k$. We use such a
generalization to implement an inflationary era and a late acceleration of the
universe. As an infla... | [
{
"created": "Tue, 8 Sep 2015 14:59:44 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jul 2016 18:08:02 GMT",
"version": "v2"
}
] | 2017-01-13 | [
[
"Hipólito-Ricaldi",
"W. S.",
""
],
[
"Villanueva",
"J. R.",
""
]
] | We enlarge the classes of inflaton and quintessence fields by generalizing the pseudo Nambu--Goldstone boson potential by means of elliptic Jacobian functions, which are characterized by a parameter $k$. We use such a generalization to implement an inflationary era and a late acceleration of the universe. As an inflati... |
2401.17893 | Mohammad Atazadeh | E. Ahmadi-Azar, K. Atazadeh and A. Eghbali | Cosmological solutions in the Brans-Dicke theory via invariants of
symmetry groups | 27 pages, References added, Accepted for publication by IJGMMP | null | 10.1142/S0219887824501925 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We proceed to obtain an exact analytical solution of the Brans-Dicke (BD)
equations for the spatially flat ($k=0$) Friedmann-Lamaitre-Robertson-Walker
(FLRW) cosmological model in both cases of the absence and presence of the
cosmological constant. The solution method that we use to solve the field
equations of the B... | [
{
"created": "Wed, 31 Jan 2024 14:59:29 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Apr 2024 14:28:18 GMT",
"version": "v2"
}
] | 2024-04-11 | [
[
"Ahmadi-Azar",
"E.",
""
],
[
"Atazadeh",
"K.",
""
],
[
"Eghbali",
"A.",
""
]
] | We proceed to obtain an exact analytical solution of the Brans-Dicke (BD) equations for the spatially flat ($k=0$) Friedmann-Lamaitre-Robertson-Walker (FLRW) cosmological model in both cases of the absence and presence of the cosmological constant. The solution method that we use to solve the field equations of the BD ... |
1608.04836 | Chengyong Zhang | Cheng-Yong Zhang, Zi-Yu Tang, Bin Wang | Gravitational collapse of massless scalar field in $f(R)$ gravity | 18pages, 5 figures, Accepted by PRD | Phys. Rev. D 94, 104013 (2016) | 10.1103/PhysRevD.94.104013 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the spherically symmetric gravitational collapse of massless scalar
matter field in asymptotic flat spacetime in $f(R)$ gravity. In the Einstein
frame of $f(R)$ gravity, an additional scalar field arises due to the conformal
transformation. We find that besides the usual competition between
gravitational ene... | [
{
"created": "Wed, 17 Aug 2016 02:25:04 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Oct 2016 14:23:26 GMT",
"version": "v2"
}
] | 2016-11-15 | [
[
"Zhang",
"Cheng-Yong",
""
],
[
"Tang",
"Zi-Yu",
""
],
[
"Wang",
"Bin",
""
]
] | We study the spherically symmetric gravitational collapse of massless scalar matter field in asymptotic flat spacetime in $f(R)$ gravity. In the Einstein frame of $f(R)$ gravity, an additional scalar field arises due to the conformal transformation. We find that besides the usual competition between gravitational energ... |
2004.00513 | Maria Churilova | M. S. Churilova | Quasinormal modes of the Dirac field in the novel 4D
Einstein-Gauss-Bonnet gravity | 5 pages, 2 figures. revtex4-1 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | While quasinormal modes of bosonic fields for the non-trivial $4$-dimensional
Einstein-Gauss-Bonnet theory of gravity suggested in [D.~Glavan and C.~Lin,
Phys.\ Rev.\ Lett.\ {\bf 124}, 081301 (2020)] have been recently studied, there
is no such study for fermionic fields. Here we calculate quasinormal modes of
the Di... | [
{
"created": "Wed, 1 Apr 2020 15:33:13 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Apr 2020 06:07:42 GMT",
"version": "v2"
}
] | 2020-04-20 | [
[
"Churilova",
"M. S.",
""
]
] | While quasinormal modes of bosonic fields for the non-trivial $4$-dimensional Einstein-Gauss-Bonnet theory of gravity suggested in [D.~Glavan and C.~Lin, Phys.\ Rev.\ Lett.\ {\bf 124}, 081301 (2020)] have been recently studied, there is no such study for fermionic fields. Here we calculate quasinormal modes of the Dira... |
1204.1380 | Adolfo Toloza Sr. | Adolfo Toloza and Jorge Zanelli | Reflections on Cosmology: an Outsider's Point of View | null | AIP Conf.Proc. 1471 (2012) 16-21 | 10.1063/1.4756805 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Some of the assumptions of cosmology, as based on the simplest version of
General Relativity, are discussed. It is argued that by slight modifications of
standard gravitation theory, our notion of the sources of gravity {the right
hand side of Einstein's equations{, could be something radically different from
what is... | [
{
"created": "Thu, 5 Apr 2012 23:57:49 GMT",
"version": "v1"
}
] | 2016-11-26 | [
[
"Toloza",
"Adolfo",
""
],
[
"Zanelli",
"Jorge",
""
]
] | Some of the assumptions of cosmology, as based on the simplest version of General Relativity, are discussed. It is argued that by slight modifications of standard gravitation theory, our notion of the sources of gravity {the right hand side of Einstein's equations{, could be something radically different from what is u... |
0904.1151 | Richard Woodard | T. M. Janssen, S. P. Miao, T. Prokopec (U. Utrecht) and R. P. Woodard
(U. Florida) | The Hubble Effective Potential | 32 pages, 6 figures, version 2 published in JCAP with some typoes
corrected and two additional references | JCAP 0905:003,2009 | 10.1088/1475-7516/2009/05/003 | SPIN-09-14, ITP-UU-09/14, UFIFT-QG-09-01 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize the effective potential to scalar field configurations which
are proportional to the Hubble parameter of a homogeneous and isotropic
background geometry. This may be useful in situations for which curvature
effects are significant. We evaluate the one loop contribution to the Hubble
Effective Potential ... | [
{
"created": "Tue, 7 Apr 2009 14:24:24 GMT",
"version": "v1"
},
{
"created": "Sat, 2 May 2009 09:18:03 GMT",
"version": "v2"
}
] | 2010-01-15 | [
[
"Janssen",
"T. M.",
"",
"U. Utrecht"
],
[
"Miao",
"S. P.",
"",
"U. Utrecht"
],
[
"Prokopec",
"T.",
"",
"U. Utrecht"
],
[
"Woodard",
"R. P.",
"",
"U. Florida"
]
] | We generalize the effective potential to scalar field configurations which are proportional to the Hubble parameter of a homogeneous and isotropic background geometry. This may be useful in situations for which curvature effects are significant. We evaluate the one loop contribution to the Hubble Effective Potential fo... |
0706.0263 | Gerard Clement | Adel Bouchareb and Gerard Clement | Black hole mass and angular momentum in topologically massive gravity | 20 pages, references added, version to appear in Classical and
Quantum Gravity | Class.Quant.Grav.24:5581-5594,2007 | 10.1088/0264-9381/24/22/018 | LAPTH-1185/07 | gr-qc hep-th | null | We extend the Abbott-Deser-Tekin approach to the computation of the Killing
charge for a solution of topologically massive gravity (TMG) linearized around
an arbitrary background. This is then applied to evaluate the mass and angular
momentum of black hole solutions of TMG with non-constant curvature
asymptotics. The... | [
{
"created": "Sat, 2 Jun 2007 10:35:59 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Sep 2007 15:54:21 GMT",
"version": "v2"
},
{
"created": "Thu, 27 Sep 2007 11:21:28 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Bouchareb",
"Adel",
""
],
[
"Clement",
"Gerard",
""
]
] | We extend the Abbott-Deser-Tekin approach to the computation of the Killing charge for a solution of topologically massive gravity (TMG) linearized around an arbitrary background. This is then applied to evaluate the mass and angular momentum of black hole solutions of TMG with non-constant curvature asymptotics. The r... |
1905.08349 | Luis Granda | L. N. Granda, D. F. Jimenez | Slow-Roll Inflation in Scalar-Tensor Models | 52 pages,4 figures, version published in JCAP | null | 10.1088/1475-7516/2019/09/007 | JCAP 1909 (2019) 007 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The linear and quadratic perturbations for a scalar-tensor model with
non-minimal coupling to curvature, coupling to the Gauss-Bonnet invariant and
non-minimal kinetic coupling to the Einstein tensor are developed. The
quadratic action for the scalar and tensor perturbations is constructed and the
power spectra for t... | [
{
"created": "Mon, 20 May 2019 21:19:19 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Sep 2019 22:53:35 GMT",
"version": "v2"
}
] | 2019-09-24 | [
[
"Granda",
"L. N.",
""
],
[
"Jimenez",
"D. F.",
""
]
] | The linear and quadratic perturbations for a scalar-tensor model with non-minimal coupling to curvature, coupling to the Gauss-Bonnet invariant and non-minimal kinetic coupling to the Einstein tensor are developed. The quadratic action for the scalar and tensor perturbations is constructed and the power spectra for the... |
1610.04360 | Gansukh Tumurtushaa | Seoktae Koh, Bum-Hoon Lee and Gansukh Tumurtushaa | Reconstruction of the Scalar Field Potential in Inflationary Models with
a Gauss-Bonnet term | 13 pages, 6 figures | Phys. Rev. D 95, 123509 (2017) | 10.1103/PhysRevD.95.123509 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study inflationary models with a Gauss-Bonnet term to reconstruct the
scalar field potentials and the Gauss-Bonnet coupling functions from the
observable quantities. Using the observationally favored relations for both
$n_s$ and $r$, we derive the expressions for both the scalar field potentials
and the coupling f... | [
{
"created": "Fri, 14 Oct 2016 08:13:24 GMT",
"version": "v1"
}
] | 2017-06-14 | [
[
"Koh",
"Seoktae",
""
],
[
"Lee",
"Bum-Hoon",
""
],
[
"Tumurtushaa",
"Gansukh",
""
]
] | We study inflationary models with a Gauss-Bonnet term to reconstruct the scalar field potentials and the Gauss-Bonnet coupling functions from the observable quantities. Using the observationally favored relations for both $n_s$ and $r$, we derive the expressions for both the scalar field potentials and the coupling fun... |
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