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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2301.11304 | Antonio Enea Romano | Antonio Enea Romano, Sergio A. Vallejo-Pe\~na | Gravitoelectromagnetic quadrirefringence | Published version | Physics of the Dark Universe , Volume 44, May 2024, 101492 | 10.1016/j.dark.2024.101492 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We develop an effective approach for the study of the interaction of
gravitational waves (GWs) and electromagnetic waves (EMWs), showing that
quadrirefringence can be produced, a phenomenon consisting in a frequency and
polarization dependency of the speed of the different polarizations of GWs and
EMWs, which is also... | [
{
"created": "Thu, 26 Jan 2023 18:43:09 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Feb 2024 22:10:35 GMT",
"version": "v2"
},
{
"created": "Mon, 8 Apr 2024 21:19:51 GMT",
"version": "v3"
}
] | 2024-04-10 | [
[
"Romano",
"Antonio Enea",
""
],
[
"Vallejo-Peña",
"Sergio A.",
""
]
] | We develop an effective approach for the study of the interaction of gravitational waves (GWs) and electromagnetic waves (EMWs), showing that quadrirefringence can be produced, a phenomenon consisting in a frequency and polarization dependency of the speed of the different polarizations of GWs and EMWs, which is also i... |
1301.3113 | Lorenzo Sindoni | Antonio Pittelli and Lorenzo Sindoni | New coherent states and modified heat equations | 7 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We clarify the relations between certain new coherent states for loop quantum
gravity and the analytically continued heat kernel coherent states,
highlighting the underlying general construction, the presence of a modified
heat equation as well as the way in which the properties of the heat kernels
are automatically ... | [
{
"created": "Mon, 14 Jan 2013 20:25:43 GMT",
"version": "v1"
}
] | 2013-01-15 | [
[
"Pittelli",
"Antonio",
""
],
[
"Sindoni",
"Lorenzo",
""
]
] | We clarify the relations between certain new coherent states for loop quantum gravity and the analytically continued heat kernel coherent states, highlighting the underlying general construction, the presence of a modified heat equation as well as the way in which the properties of the heat kernels are automatically in... |
1911.12374 | Sunny Vagnozzi | Sunny Vagnozzi, Luca Visinelli, Olga Mena, David F. Mota | Do we have any hope of detecting scattering between dark energy and
baryons through cosmology? | 15 pages, 7 figures. Title changed, minor modifications added
comments on non-linearities. Version accepted for publication in MNRAS | Mon. Not. Roy. Astron. Soc. 493 (2020) 1139 | 10.1093/mnras/staa311 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the possibility that dark energy and baryons might scatter off
each other. The type of interaction we consider leads to a pure momentum
exchange, and does not affect the background evolution of the expansion
history. We parametrize this interaction in an effective way at the level of
Boltzmann equations. ... | [
{
"created": "Wed, 27 Nov 2019 19:00:12 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Jan 2020 15:30:38 GMT",
"version": "v2"
}
] | 2020-02-24 | [
[
"Vagnozzi",
"Sunny",
""
],
[
"Visinelli",
"Luca",
""
],
[
"Mena",
"Olga",
""
],
[
"Mota",
"David F.",
""
]
] | We consider the possibility that dark energy and baryons might scatter off each other. The type of interaction we consider leads to a pure momentum exchange, and does not affect the background evolution of the expansion history. We parametrize this interaction in an effective way at the level of Boltzmann equations. We... |
1610.01799 | Henrik Nersisyan | Henrik Nersisyan, Yashar Akrami, Luca Amendola, Tomi S. Koivisto,
Javier Rubio, Adam R. Solomon | Instabilities in tensorial nonlocal gravity | 10 pages, 2 figures. v2: version published in PRD | Phys. Rev. D 95, 043539 (2017) | 10.1103/PhysRevD.95.043539 | NORDITA-2016-102 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the cosmological implications of nonlocal modifications of general
relativity containing tensorial structures. Assuming the presence of standard
radiation- and matter-dominated eras, we show that, except in very particular
cases, the nonlocal terms contribute a rapidly growing energy density. These
models ... | [
{
"created": "Thu, 6 Oct 2016 09:55:55 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Feb 2017 11:42:54 GMT",
"version": "v2"
}
] | 2017-03-01 | [
[
"Nersisyan",
"Henrik",
""
],
[
"Akrami",
"Yashar",
""
],
[
"Amendola",
"Luca",
""
],
[
"Koivisto",
"Tomi S.",
""
],
[
"Rubio",
"Javier",
""
],
[
"Solomon",
"Adam R.",
""
]
] | We discuss the cosmological implications of nonlocal modifications of general relativity containing tensorial structures. Assuming the presence of standard radiation- and matter-dominated eras, we show that, except in very particular cases, the nonlocal terms contribute a rapidly growing energy density. These models th... |
gr-qc/0212063 | Nicos Pelavas | A. Coley (1), R. Milson (1), N. Pelavas (1), V. Pravda (2), A.
Pravdov\'a (2), R. Zalaletdinov (1) ((1) Dalhousie University, Halifax, (2)
Mathematical Institute, Prague) | Generalizations of pp-wave spacetimes in higher dimensions | 5 pages, RevTex, to appear in Physical Review D | Phys.Rev.D67:104020,2003 | 10.1103/PhysRevD.67.104020 | null | gr-qc hep-th | null | We shall investigate $D$-dimensional Lorentzian spacetimes in which all of
the scalar invariants constructed from the Riemann tensor and its covariant
derivatives are zero. These spacetimes are higher-dimensional generalizations
of $D$-dimensional pp-wave spacetimes, which have been of interest recently in
the contex... | [
{
"created": "Fri, 13 Dec 2002 22:50:42 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Mar 2003 18:23:18 GMT",
"version": "v2"
}
] | 2016-08-16 | [
[
"Coley",
"A.",
""
],
[
"Milson",
"R.",
""
],
[
"Pelavas",
"N.",
""
],
[
"Pravda",
"V.",
""
],
[
"Pravdová",
"A.",
""
],
[
"Zalaletdinov",
"R.",
""
]
] | We shall investigate $D$-dimensional Lorentzian spacetimes in which all of the scalar invariants constructed from the Riemann tensor and its covariant derivatives are zero. These spacetimes are higher-dimensional generalizations of $D$-dimensional pp-wave spacetimes, which have been of interest recently in the context ... |
1809.03884 | Beatriz Elizaga Navascu\'es | Beatriz Elizaga Navascu\'es and Guillermo A. Mena Marug\'an | Perturbations in Quantum Cosmology: The Continuum Limit in Fourier Space | 12 pages | Phys. Rev. D 98, 103522 (2018) | 10.1103/PhysRevD.98.103522 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the passage to a continuum limit of the mode spectrum of
primordial perturbations around flat cosmological spacetimes in Quantum
Cosmology, showing that this limit can be reached even if one starts by
considering a finite fiducial cell as spatial slice. Whereas the resulting
system can be described in an i... | [
{
"created": "Tue, 11 Sep 2018 13:40:04 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Nov 2021 02:24:48 GMT",
"version": "v2"
}
] | 2021-11-04 | [
[
"Navascués",
"Beatriz Elizaga",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
]
] | We analyze the passage to a continuum limit of the mode spectrum of primordial perturbations around flat cosmological spacetimes in Quantum Cosmology, showing that this limit can be reached even if one starts by considering a finite fiducial cell as spatial slice. Whereas the resulting system can be described in an inv... |
0912.5097 | Igor Rodnianski | S. Klainerman, I. Rodnianski | On the formation of trapped surfaces | null | null | null | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent important breakthrough D. Christodoulou has solved a long
standing problem of General Relativity of evolutionary formation of trapped
surfaces in the Einstein-vacuum space-times. He has identified an open set of
regular initial conditions on an outgoing null hypersurface (both finite and at
past null infi... | [
{
"created": "Tue, 29 Dec 2009 00:09:57 GMT",
"version": "v1"
}
] | 2009-12-31 | [
[
"Klainerman",
"S.",
""
],
[
"Rodnianski",
"I.",
""
]
] | In a recent important breakthrough D. Christodoulou has solved a long standing problem of General Relativity of evolutionary formation of trapped surfaces in the Einstein-vacuum space-times. He has identified an open set of regular initial conditions on an outgoing null hypersurface (both finite and at past null infini... |
0805.4294 | Rajesh R. Parwani | Le-Huy Nguyen and Rajesh R. Parwani | Nonlinear Quantum Cosmology | Final Journal version: Further clarification in Introduction and
Conclusion. references added. figures same as in version 1 | Gen.Rel.Grav.41:2543-2560,2009 | 10.1007/s10714-009-0779-9 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effects of an information-theoretically motivated nonlinear
correction to the Wheeler-deWitt equation in the minisuperspace scheme for
flat, $k=0$, Friedmann-Robertson-Walker (FRW) universes. When the only matter
is a cosmological constant, the nonlinearity can provide a barrier that screens
the original... | [
{
"created": "Wed, 28 May 2008 09:41:21 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Oct 2008 06:49:10 GMT",
"version": "v2"
},
{
"created": "Tue, 17 Feb 2009 07:09:52 GMT",
"version": "v3"
}
] | 2014-11-18 | [
[
"Nguyen",
"Le-Huy",
""
],
[
"Parwani",
"Rajesh R.",
""
]
] | We study the effects of an information-theoretically motivated nonlinear correction to the Wheeler-deWitt equation in the minisuperspace scheme for flat, $k=0$, Friedmann-Robertson-Walker (FRW) universes. When the only matter is a cosmological constant, the nonlinearity can provide a barrier that screens the original B... |
1707.05724 | Andrea Addazi AndAdd | Andrea Addazi | Evaporation/Antievaporation and energy conditions in alternative gravity | null | null | 10.1142/S0217751X18500306 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the evaporation and antievaporation instabilities of Nariai
solution in extended theories of gravity. These phenomena were explicitly shown
in several different extensions of General Relativity, suggesting that a
universal cause is behind them. We show that evaporation and antievaporation
are originated fr... | [
{
"created": "Tue, 18 Jul 2017 16:14:19 GMT",
"version": "v1"
}
] | 2018-02-28 | [
[
"Addazi",
"Andrea",
""
]
] | We discuss the evaporation and antievaporation instabilities of Nariai solution in extended theories of gravity. These phenomena were explicitly shown in several different extensions of General Relativity, suggesting that a universal cause is behind them. We show that evaporation and antievaporation are originated from... |
gr-qc/9605049 | Patricio Salgado Areas | Mauricio Cataldo (Universidad del Bio-Bio, Chile), Patricio Salgado
(Universidad de Concepcion, Chile) | Static Einstein-Maxwell Solutions in 2+1 dimensions | 8 pages, LaTeX, no figures, to appear in Physical Review D | null | 10.1103/PhysRevD.54.2971 | null | gr-qc | null | We obtain the Einstein-Maxwell equations for (2+1)-dimensional static
space-time, which are invariant under the transformation
$q_0=i\,q_2,q_2=i\,q_0,\alpha \rightleftharpoons \gamma$. It is shown that the
magnetic solution obtained with the help of the procedure used in
Ref.~\cite{Cataldo}, can be obtained from the ... | [
{
"created": "Wed, 22 May 1996 11:22:26 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Cataldo",
"Mauricio",
"",
"Universidad del Bio-Bio, Chile"
],
[
"Salgado",
"Patricio",
"",
"Universidad de Concepcion, Chile"
]
] | We obtain the Einstein-Maxwell equations for (2+1)-dimensional static space-time, which are invariant under the transformation $q_0=i\,q_2,q_2=i\,q_0,\alpha \rightleftharpoons \gamma$. It is shown that the magnetic solution obtained with the help of the procedure used in Ref.~\cite{Cataldo}, can be obtained from the st... |
2002.07588 | Subhajyoti Pal Mr. | Subhajyoti Pal, Subenoy Chakraborty | Dynamical System Analysis of a Three Fluid Cosmological Model : An
Invariant Manifold approach | 26 pages, 8 figures, 16 tables | Eur.Phys.J.C79(2019)no.4, 362 | 10.1140/epjc/s10052-019-6875-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present paper considers a three-fluid cosmological model consisting of
noninteracting dark matter, dark energy and baryonic matter in the background
of the Friedmann- Robertson- Walker- Lemaitre flat spacetime. It has been
assumed that the dark matter takes the form of dust whereas the dark energy is
a quintessen... | [
{
"created": "Mon, 17 Feb 2020 10:07:23 GMT",
"version": "v1"
}
] | 2020-02-19 | [
[
"Pal",
"Subhajyoti",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | The present paper considers a three-fluid cosmological model consisting of noninteracting dark matter, dark energy and baryonic matter in the background of the Friedmann- Robertson- Walker- Lemaitre flat spacetime. It has been assumed that the dark matter takes the form of dust whereas the dark energy is a quintessence... |
1909.13688 | Thiago Pereira | Thiago S. Pereira, Cyril Pitrou | Bianchi spacetimes as super-curvature modes around isotropic cosmologies | 32 pages and 1 figure | Phys. Rev. D 100, 123534 (2019) | 10.1103/PhysRevD.100.123534 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A powerful result in theoretical cosmology states that a subset of
anisotropic Bianchi models can be seen as the homogeneous limit of (standard)
linear cosmological perturbations. Such models are precisely those leading to
Friedmann spacetimes in the limit of zero anisotropy. Building on previous
works, we give a com... | [
{
"created": "Mon, 30 Sep 2019 13:33:35 GMT",
"version": "v1"
}
] | 2019-12-25 | [
[
"Pereira",
"Thiago S.",
""
],
[
"Pitrou",
"Cyril",
""
]
] | A powerful result in theoretical cosmology states that a subset of anisotropic Bianchi models can be seen as the homogeneous limit of (standard) linear cosmological perturbations. Such models are precisely those leading to Friedmann spacetimes in the limit of zero anisotropy. Building on previous works, we give a compr... |
2304.13263 | Ruanjing Zhang | Ruanjing Zhang and Jiliang Jing and Zhipeng Peng and Qihong Huang | Strong gravitational lensing of rotating regular black holes in
non-minimally coupled Einstein-Yang-Mills theory | null | Chinese Physics C Vol. 47, No. 10 (2023) 105105 | 10.1088/1674-1137/acf489 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The strong gravitational lensing of a regular and rotating magnetic black
hole in non-minimally coupled Einstein-Yang-Mills theory is studied. We find
that, with the increase of any characteristic parameters of this black hole,
such as the rotating parameter, magnetic charge and EYM parameter, the angular
image posit... | [
{
"created": "Wed, 26 Apr 2023 03:36:24 GMT",
"version": "v1"
},
{
"created": "Mon, 8 May 2023 09:15:32 GMT",
"version": "v2"
}
] | 2023-10-16 | [
[
"Zhang",
"Ruanjing",
""
],
[
"Jing",
"Jiliang",
""
],
[
"Peng",
"Zhipeng",
""
],
[
"Huang",
"Qihong",
""
]
] | The strong gravitational lensing of a regular and rotating magnetic black hole in non-minimally coupled Einstein-Yang-Mills theory is studied. We find that, with the increase of any characteristic parameters of this black hole, such as the rotating parameter, magnetic charge and EYM parameter, the angular image positio... |
2105.07695 | H. B. Benaoum | H. B. Benaoum and A. Ovgun | Matter-antimatter asymmetry induced by non-linear electrodynamics | To appear in Classical and Quantum Gravity; 12 pages; dedicated to
Andrei Sakharov on the occasion of his 100th birthday | Class. Quantum Grav. 38 135019 (2021) | 10.1088/1361-6382/abfd90 | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | In this work, we propose an economical model to address some open
cosmological problems such as the absence of the initial cosmological
singularity, an early acceleration of the Universe and the generation of
matter-antimatter asymmetry. The model is based on a scenario in which the
early Universe consists of a non-l... | [
{
"created": "Mon, 17 May 2021 09:31:07 GMT",
"version": "v1"
}
] | 2021-06-10 | [
[
"Benaoum",
"H. B.",
""
],
[
"Ovgun",
"A.",
""
]
] | In this work, we propose an economical model to address some open cosmological problems such as the absence of the initial cosmological singularity, an early acceleration of the Universe and the generation of matter-antimatter asymmetry. The model is based on a scenario in which the early Universe consists of a non-lin... |
gr-qc/0702141 | Niklas Rohr | J. Mark Heinzle, Claes Uggla, Niklas Rohr | The cosmological billiard attractor | 88 pages, 18 figures | Adv.Theor.Math.Phys.13:293-407,2009 | null | null | gr-qc | null | This article is devoted to a study of the asymptotic dynamics of generic
solutions of the Einstein vacuum equations toward a generic spacelike
singularity. Starting from fundamental assumptions about the nature of generic
spacelike singularities we derive in a step-by-step manner the cosmological
billiard conjecture:... | [
{
"created": "Tue, 27 Feb 2007 12:30:37 GMT",
"version": "v1"
}
] | 2009-03-19 | [
[
"Heinzle",
"J. Mark",
""
],
[
"Uggla",
"Claes",
""
],
[
"Rohr",
"Niklas",
""
]
] | This article is devoted to a study of the asymptotic dynamics of generic solutions of the Einstein vacuum equations toward a generic spacelike singularity. Starting from fundamental assumptions about the nature of generic spacelike singularities we derive in a step-by-step manner the cosmological billiard conjecture: w... |
1409.1503 | Burkhard Kleihaus | Burkhard Kleihaus and Jutta Kunz | Rotating Ellis Wormholes in Four Dimensions | 9 pages, 3 figures | Phys. Rev. D90 (2014) 121503(R) | 10.1103/PhysRevD.90.121503 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present rotating wormhole solutions in General Relativity, which are
supported by a phantom scalar field. These solutions evolve from the static
Ellis wormhole, when the throat is set into rotation. As the rotational
velocity increases, the throat deforms until at a maximal value of the
rotational velocity, an ext... | [
{
"created": "Thu, 4 Sep 2014 17:39:59 GMT",
"version": "v1"
}
] | 2014-12-31 | [
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | We present rotating wormhole solutions in General Relativity, which are supported by a phantom scalar field. These solutions evolve from the static Ellis wormhole, when the throat is set into rotation. As the rotational velocity increases, the throat deforms until at a maximal value of the rotational velocity, an extre... |
2207.08780 | Wenbin Lin | Jie Li, Bo Yang, Wenbin Lin | The quasi-Keplerian motion in the regular Bardeen spacetime | 12 pages, 1 figure. arXiv admin note: substantial text overlap with
arXiv:2202.08264 | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The second post-Newtonian solution for the quasi-Keplerian motion of a test
particle in the gravitational field of regular Bardeen black hole is derived.
The solution is formulated in terms of the test particle's orbital energy and
angular momentum, as well as the mass and magnetic charge of the Bardeen black
hole. T... | [
{
"created": "Mon, 4 Jul 2022 17:31:00 GMT",
"version": "v1"
}
] | 2022-07-19 | [
[
"Li",
"Jie",
""
],
[
"Yang",
"Bo",
""
],
[
"Lin",
"Wenbin",
""
]
] | The second post-Newtonian solution for the quasi-Keplerian motion of a test particle in the gravitational field of regular Bardeen black hole is derived. The solution is formulated in terms of the test particle's orbital energy and angular momentum, as well as the mass and magnetic charge of the Bardeen black hole. The... |
1602.00682 | Pitayuth Wongjun | Pitayuth Wongjun | Perfect fluid in Lagrangian formulation due to generalized three-form
field | 21 pages, no figure, V2 minor corrected and added a subsection, V3
typos corrected, published version | Phys. Rev. D 96, 023516 (2017) | 10.1103/PhysRevD.96.023516 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Lagrangian formulation of perfect fluid due to a noncanonical three-form
field is investigated. The thermodynamic quantities such as energy density,
pressure and the four velocity are obtained and then analyzed by comparing with
the k-essence scalar field. The nonrelativistic matter due to the generalized
three-for... | [
{
"created": "Sun, 31 Jan 2016 09:08:42 GMT",
"version": "v1"
},
{
"created": "Sat, 1 Apr 2017 08:20:00 GMT",
"version": "v2"
},
{
"created": "Wed, 19 Jul 2017 08:08:35 GMT",
"version": "v3"
}
] | 2017-07-26 | [
[
"Wongjun",
"Pitayuth",
""
]
] | A Lagrangian formulation of perfect fluid due to a noncanonical three-form field is investigated. The thermodynamic quantities such as energy density, pressure and the four velocity are obtained and then analyzed by comparing with the k-essence scalar field. The nonrelativistic matter due to the generalized three-form ... |
1406.1658 | Alexis Helou | Pierre Bin\'etruy and Alexis Helou | The Apparent Universe | 16 pages, 1 figure | null | 10.1088/0264-9381/32/20/205006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We exploit the parallel between dynamical black holes and cosmological
spacetimes to describe the evolution of Friedmann-Lema\^itre-Robertson-Walker
universes from the point of view of an observer in terms of the dynamics of the
apparent horizon. Using the Hayward-Kodama formalism of dynamical black holes,
we clarify... | [
{
"created": "Fri, 6 Jun 2014 12:28:10 GMT",
"version": "v1"
}
] | 2015-10-07 | [
[
"Binétruy",
"Pierre",
""
],
[
"Helou",
"Alexis",
""
]
] | We exploit the parallel between dynamical black holes and cosmological spacetimes to describe the evolution of Friedmann-Lema\^itre-Robertson-Walker universes from the point of view of an observer in terms of the dynamics of the apparent horizon. Using the Hayward-Kodama formalism of dynamical black holes, we clarify t... |
gr-qc/0703106 | Aseem Paranjape | Aseem Paranjape, T. P. Singh | The Spatial Averaging Limit of Covariant Macroscopic Gravity - Scalar
Corrections to the Cosmological Equations | 18 pages, no figures, revtex4; v2 - minor clarifications added; v3 -
minor changes in presentation to improve clarity, reference added, to appear
in Phys. Rev. D | Phys.Rev.D76:044006,2007 | 10.1103/PhysRevD.76.044006 | null | gr-qc astro-ph hep-th | null | It is known that any explicit averaging scheme of the type essential for
describing the large scale behaviour of the Universe, must necessarily yield
corrections to the Einstein equations applied in the Cosmological setting. The
question of whether or not the resulting corrections to the Einstein equations
are signif... | [
{
"created": "Wed, 21 Mar 2007 10:18:41 GMT",
"version": "v1"
},
{
"created": "Sun, 8 Apr 2007 06:08:58 GMT",
"version": "v2"
},
{
"created": "Sat, 23 Jun 2007 13:08:09 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Paranjape",
"Aseem",
""
],
[
"Singh",
"T. P.",
""
]
] | It is known that any explicit averaging scheme of the type essential for describing the large scale behaviour of the Universe, must necessarily yield corrections to the Einstein equations applied in the Cosmological setting. The question of whether or not the resulting corrections to the Einstein equations are signific... |
gr-qc/0411038 | Christine C\'ordula Dantas | Christine C. Dantas | A Note on the Integral Formulation of Einstein's Equations Induced on a
Braneworld | 10 pages, no figures, accepted for publication in the General
Relativity and Gravitation Journal | Gen.Rel.Grav. 37 (2005) 959-965 | 10.1007/s10714-005-0078-z | null | gr-qc astro-ph | null | We revisit the integral formulation (or Green's function approach) of
Einstein's equations in the context of braneworlds. The integral formulation
has been proposed independently by several authors in the past, based on the
assumption that it is possible to give a reinterpretation of the local metric
field in curved ... | [
{
"created": "Mon, 8 Nov 2004 19:06:35 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Dantas",
"Christine C.",
""
]
] | We revisit the integral formulation (or Green's function approach) of Einstein's equations in the context of braneworlds. The integral formulation has been proposed independently by several authors in the past, based on the assumption that it is possible to give a reinterpretation of the local metric field in curved sp... |
2304.04801 | Davide Gerosa | Davide Gerosa, Giulia Fumagalli, Matthew Mould, Giovanni Cavallotto,
Diego Padilla Monroy, Daria Gangardt, Viola De Renzis | Efficient multi-timescale dynamics of precessing black-hole binaries | Code available at https://github.com/dgerosa/precession | Phys. Rev. D 108, 024042 (2023) | 10.1103/PhysRevD.108.024042 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present analytical and numerical progress on black-hole binary spin
precession at second post-Newtonian order using multi-timescale methods. In
addition to the commonly used effective spin which acts as a constant of
motion, we exploit the weighted spin difference and show that such
reparametrization cures the coo... | [
{
"created": "Mon, 10 Apr 2023 18:21:11 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Jul 2023 12:14:40 GMT",
"version": "v2"
}
] | 2023-07-26 | [
[
"Gerosa",
"Davide",
""
],
[
"Fumagalli",
"Giulia",
""
],
[
"Mould",
"Matthew",
""
],
[
"Cavallotto",
"Giovanni",
""
],
[
"Monroy",
"Diego Padilla",
""
],
[
"Gangardt",
"Daria",
""
],
[
"De Renzis",
"Viola",
... | We present analytical and numerical progress on black-hole binary spin precession at second post-Newtonian order using multi-timescale methods. In addition to the commonly used effective spin which acts as a constant of motion, we exploit the weighted spin difference and show that such reparametrization cures the coord... |
gr-qc/9803063 | Mahmut Hortacsu | M. Horta\c{c}su | Vacuum fluctuations for spherical gravitational impulsive waves | Class. Quantum Grav. 13(1996) 2683-2691 | Class.Quant.Grav. 13 (1996) 2683-2691 | 10.1088/0264-9381/13/10/008 | null | gr-qc | null | We propose a method for calculating vacuum fluctuations on the background of
a spherical impulsive gravitational wave which results in a finite expression
for the vacuum expectation value of the stress-energy tensor. The method is
based on first including a cosmological constant as an auxiliary constant. We
show that... | [
{
"created": "Wed, 18 Mar 1998 13:40:13 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Apr 1998 17:18:33 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Hortaçsu",
"M.",
""
]
] | We propose a method for calculating vacuum fluctuations on the background of a spherical impulsive gravitational wave which results in a finite expression for the vacuum expectation value of the stress-energy tensor. The method is based on first including a cosmological constant as an auxiliary constant. We show that t... |
1005.0716 | Molin Liu | Molin Liu, Benhai Yu, Fei Yu, Yuanxing Gui | The Fourth Gravity Test and Quintessence Matter Field | 9 pages, 1 figure, Eur. Phys. J. C in press | Eur.Phys.J.C67:507-512,2010 | 10.1140/epjc/s10052-010-1321-7 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | After the previous work on gravitational frequency shift, light deflection
(arXiv:1003.5296) and perihelion advance (arXiv:0812.2332), we calculate
carefully the fourth gravity test, i.e. radar echo delay in a central gravity
field surrounded by static free quintessence matter, in this paper. Through the
Lagrangian m... | [
{
"created": "Wed, 5 May 2010 10:27:54 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Liu",
"Molin",
""
],
[
"Yu",
"Benhai",
""
],
[
"Yu",
"Fei",
""
],
[
"Gui",
"Yuanxing",
""
]
] | After the previous work on gravitational frequency shift, light deflection (arXiv:1003.5296) and perihelion advance (arXiv:0812.2332), we calculate carefully the fourth gravity test, i.e. radar echo delay in a central gravity field surrounded by static free quintessence matter, in this paper. Through the Lagrangian met... |
2207.07652 | Sankarsan Tarai | A.Y. Shaikh, Sankarsan Tarai, S.K. Tripathy, B.Mishra | Bouncing cosmological model with general relativistic hydrodynamics in
extended gravity | 10 pages, 9 figures, Accepted version IJGMMP | IGGMMP, 19(12), 2250193 (2022) | 10.1142/S0219887822501936 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, in an extended theory of gravity, we have presented bouncing
cosmological model at the backdrop of an isotropic, homogeneous space-time, in
presence of general relativistic hydrodynamics (GRH). The scale factor has been
chosen in such a manner that with appropriate normalization, the quintom
bouncing s... | [
{
"created": "Fri, 15 Jul 2022 05:11:59 GMT",
"version": "v1"
}
] | 2023-03-29 | [
[
"Shaikh",
"A. Y.",
""
],
[
"Tarai",
"Sankarsan",
""
],
[
"Tripathy",
"S. K.",
""
],
[
"Mishra",
"B.",
""
]
] | In this paper, in an extended theory of gravity, we have presented bouncing cosmological model at the backdrop of an isotropic, homogeneous space-time, in presence of general relativistic hydrodynamics (GRH). The scale factor has been chosen in such a manner that with appropriate normalization, the quintom bouncing sce... |
1106.2408 | Valeria Kagramanova | Victor Enolski, Betti Hartmann, Valeria Kagramanova, Jutta Kunz, Claus
L\"ammerzahl, Parinya Sirimachan | Hyperelliptic integrals and Ho\v{r}ava-Lifshitz black hole space-times | 34 pages, 3 figures, 1 table; We extended the sections 'Introduction'
and 'Conclusions and Outlook' and made some cosmetic changes throughout the
article. The article is accepted for publication in JMP. arXiv admin note:
text overlap with arXiv:1011.6459 | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The description of many dynamical problems like the particle motion in higher
dimensional spherically and axially symmetric space-times is reduced to the
inversion of hyperelliptic integrals of all three kinds. The result of the
inversion is defined locally, using the algebro-geometric techniques of the
standard Jaco... | [
{
"created": "Mon, 13 Jun 2011 10:20:22 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Dec 2011 19:22:22 GMT",
"version": "v2"
}
] | 2011-12-22 | [
[
"Enolski",
"Victor",
""
],
[
"Hartmann",
"Betti",
""
],
[
"Kagramanova",
"Valeria",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Lämmerzahl",
"Claus",
""
],
[
"Sirimachan",
"Parinya",
""
]
] | The description of many dynamical problems like the particle motion in higher dimensional spherically and axially symmetric space-times is reduced to the inversion of hyperelliptic integrals of all three kinds. The result of the inversion is defined locally, using the algebro-geometric techniques of the standard Jacobi... |
0912.0554 | Chun-Yen Lin | Chun-Yen Lin | Emergence of General Relativity from Loop Quantum Gravity | 83 pages MikteX file with 3 pdf figures. Ph.D. Thesis. Using
arbitrary real Immirzi parameter and recovering the symmetry algebra, this
work is significantly improved from its previous version. Details of the
model are also given in the content | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A model is proposed to demonstrate that classical general relativity can
emerge from loop quantum gravity, in a relational description of gravitational
field in terms of coordinates given by matter. Local Dirac observables and
coherent states are defined to explore physical content of the model.
Expectation values of... | [
{
"created": "Thu, 3 Dec 2009 00:13:02 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Mar 2011 05:01:23 GMT",
"version": "v2"
}
] | 2011-03-29 | [
[
"Lin",
"Chun-Yen",
""
]
] | A model is proposed to demonstrate that classical general relativity can emerge from loop quantum gravity, in a relational description of gravitational field in terms of coordinates given by matter. Local Dirac observables and coherent states are defined to explore physical content of the model. Expectation values of c... |
1205.0279 | Boris Altshuler | Boris L. Altshuler | Mach's Principle selects 4 space-time dimensions | 15 pages | null | 10.1103/PhysRevD.86.044006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bi-tensor kernel in integral form of Einstein equations realizing Mach's idea
of non-existence of empty space-times is taken as an inverse of differential
operator ("Mach operator") defined conventionally as a second variation of
Einstein's gravity Action over contravariant components of metric tensor. The
choice of ... | [
{
"created": "Mon, 30 Apr 2012 15:00:47 GMT",
"version": "v1"
}
] | 2013-05-30 | [
[
"Altshuler",
"Boris L.",
""
]
] | Bi-tensor kernel in integral form of Einstein equations realizing Mach's idea of non-existence of empty space-times is taken as an inverse of differential operator ("Mach operator") defined conventionally as a second variation of Einstein's gravity Action over contravariant components of metric tensor. The choice of tr... |
1507.08166 | Zhoujian Cao Dr | Chung-Chin Tsai, Zhoujian Cao, Chun-Yu Lin, Hwei-Jang Yo | Pseudotensor applied to Numerical Relativity in Calculating Global
Quantities | 15 pages, 4 figures. This work is dedicated to the General Relativity
special issue | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we apply the Landau-Lifshitz pseudotensor flux formalism to the
calculation of the total mass and the total angular momentum during the
evolution of a binary black hole system. We also compare its performance with
the traditional integrations for the global quantities. It shows that the
advantage of the ... | [
{
"created": "Wed, 29 Jul 2015 14:45:07 GMT",
"version": "v1"
}
] | 2015-07-30 | [
[
"Tsai",
"Chung-Chin",
""
],
[
"Cao",
"Zhoujian",
""
],
[
"Lin",
"Chun-Yu",
""
],
[
"Yo",
"Hwei-Jang",
""
]
] | In this work we apply the Landau-Lifshitz pseudotensor flux formalism to the calculation of the total mass and the total angular momentum during the evolution of a binary black hole system. We also compare its performance with the traditional integrations for the global quantities. It shows that the advantage of the ps... |
1107.2109 | Qasem Exirifard | Qasem Exirifard | GravitoMagnetic Force in Modified Newtonian Dynamics | 30 pages, 3 figures | JCAP08(2013)046 | 10.1088/1475-7516/2013/08/046 | IPM/P-2011/061 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce the Gauge Vector-Tensor (GVT) theory by extending the AQUAL's
approach to the GravitoElectroMagnetism (GEM) approximation of gravity. GVT is
a generally covariant theory of gravity composed of a pseudo Riemannian metric
and two U(1) gauge connections that reproduces MOND in the limit of very weak
gravita... | [
{
"created": "Sat, 9 Jul 2011 09:18:37 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Jul 2011 09:29:15 GMT",
"version": "v2"
},
{
"created": "Wed, 31 Aug 2011 14:54:46 GMT",
"version": "v3"
},
{
"created": "Thu, 20 Oct 2011 17:44:46 GMT",
"version": "v4"
},
{
"cr... | 2013-08-28 | [
[
"Exirifard",
"Qasem",
""
]
] | We introduce the Gauge Vector-Tensor (GVT) theory by extending the AQUAL's approach to the GravitoElectroMagnetism (GEM) approximation of gravity. GVT is a generally covariant theory of gravity composed of a pseudo Riemannian metric and two U(1) gauge connections that reproduces MOND in the limit of very weak gravitati... |
1210.7248 | Asieh Karami | Alejandro Corichi, Asieh Karami, Edison Montoya | Loop Quantum Cosmology: Anisotropy and singularity resolution | 12 pages, 4 figures, To appear in the Proceedings of the Relativity
and Gravitation 100 Years after Einstein in Prague; Addition of comments and
references | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this contribution we consider the issue of singularity resolution within
loop quantum cosmology (LQC) for different homogeneous models. We present
results of numerical evolutions of effective equations for both isotropic as
well as anisotropic cosmologies, with and without spatial curvature. To address
the issue o... | [
{
"created": "Fri, 26 Oct 2012 20:23:12 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Dec 2012 04:30:41 GMT",
"version": "v2"
}
] | 2012-12-04 | [
[
"Corichi",
"Alejandro",
""
],
[
"Karami",
"Asieh",
""
],
[
"Montoya",
"Edison",
""
]
] | In this contribution we consider the issue of singularity resolution within loop quantum cosmology (LQC) for different homogeneous models. We present results of numerical evolutions of effective equations for both isotropic as well as anisotropic cosmologies, with and without spatial curvature. To address the issue of ... |
1806.00818 | Martin Reiris | Mart\'in Reiris Ithurralde | A classification theorem for static vacuum black holes. Part I: the
study of the lapse | 32 pages, 6 figures | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The celebrated uniqueness's theorem of the Schwarzschild solution by Israel,
Robinson et al, and Bunting/Masood-ul-Alam, asserts that the only
asymptotically flat static solution of the vacuum Einstein equations with
compact but non-necessarily connected horizon is Schwarzschild. Between this
article and its sequel w... | [
{
"created": "Sun, 3 Jun 2018 15:54:38 GMT",
"version": "v1"
}
] | 2018-06-05 | [
[
"Ithurralde",
"Martín Reiris",
""
]
] | The celebrated uniqueness's theorem of the Schwarzschild solution by Israel, Robinson et al, and Bunting/Masood-ul-Alam, asserts that the only asymptotically flat static solution of the vacuum Einstein equations with compact but non-necessarily connected horizon is Schwarzschild. Between this article and its sequel we ... |
1503.06231 | Arvin Ravanpak | Arvin Ravanpak and Fahimeh Salmeh | Logamediate Inflation by Tachyon Field | 13 pages, 4 figures | Phys.Rev.D 89, 063504 (2014) | 10.1103/PhysRevD.89.063504 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A logamediate inflationary model in the presence of the tachyon scalar field
will be studied. Considering slow-roll inflation, the equations of motion of
the universe and the tachyon field will be derived. In the context of
perturbation theory, some important perturbation parameters will be obtained
and using numeric... | [
{
"created": "Fri, 20 Mar 2015 21:08:34 GMT",
"version": "v1"
}
] | 2015-06-24 | [
[
"Ravanpak",
"Arvin",
""
],
[
"Salmeh",
"Fahimeh",
""
]
] | A logamediate inflationary model in the presence of the tachyon scalar field will be studied. Considering slow-roll inflation, the equations of motion of the universe and the tachyon field will be derived. In the context of perturbation theory, some important perturbation parameters will be obtained and using numerical... |
gr-qc/9710092 | Kirill Bronnikov | K. A. Bronnikov, C. P. Constantinidis, R. L. Evangelista and J. C.
Fabris | Cold black holes in scalar-tensor theories | 9 pages, Latex, submitted to Int. J. Mod. Phys. D | null | null | UFES-DF-001/97 | gr-qc | null | We study the possible existence of black holes in scalar-tensor theories of
gravity in four dimensions. Their existence is verified for anomalous versions
of these theories, with a negative kinetic term in the Lagrangian. The Hawking
temperature T_H of these holes is zero, while the horizon area is (in most
cases) in... | [
{
"created": "Mon, 20 Oct 1997 13:21:35 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Constantinidis",
"C. P.",
""
],
[
"Evangelista",
"R. L.",
""
],
[
"Fabris",
"J. C.",
""
]
] | We study the possible existence of black holes in scalar-tensor theories of gravity in four dimensions. Their existence is verified for anomalous versions of these theories, with a negative kinetic term in the Lagrangian. The Hawking temperature T_H of these holes is zero, while the horizon area is (in most cases) infi... |
gr-qc/0508094 | Firmin Oliveira | Firmin J. Oliveira (Joint Astronomy Centre, Hilo, Hawai`i, U.S.A.) | Quantized Intrinsic Redshift in Cosmological General Relativity | 9 pages | null | null | null | gr-qc | null | There are now several analyses reporting quantized differences in the
redshifts between pairs of galaxies. In the simplest cases, these differential
redshifts are found to be harmonics of fundamental periods of approximately 72
km/s and 37.5 km/s. In this paper a wave equation is derived based on
cosmological general... | [
{
"created": "Tue, 23 Aug 2005 05:57:42 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Oliveira",
"Firmin J.",
"",
"Joint Astronomy Centre, Hilo, Hawai`i, U.S.A."
]
] | There are now several analyses reporting quantized differences in the redshifts between pairs of galaxies. In the simplest cases, these differential redshifts are found to be harmonics of fundamental periods of approximately 72 km/s and 37.5 km/s. In this paper a wave equation is derived based on cosmological general r... |
2309.07228 | Gregorio Carullo | Gregorio Carullo, Simone Albanesi, Alessandro Nagar, Rossella Gamba,
Sebastiano Bernuzzi, Tomas Andrade and Juan Trenado | Unveiling the merger structure of black hole binaries in generic planar
orbits | v2: extended to spinning case. Matches journal version; v3: fix
formatting issue in Suppl. Mat | Phys. Rev. Lett. 132, 101401 (2024) | 10.1103/PhysRevLett.132.101401 | VIR-0804A-23 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The precise modeling of binary black hole coalescences in generic planar
orbits is a crucial step to disentangle dynamical and isolated binary formation
channels through gravitational-wave observations. The merger regime of such
coalescences exhibits a significantly higher complexity compared to the
quasicircular cas... | [
{
"created": "Wed, 13 Sep 2023 18:01:41 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Apr 2024 03:09:48 GMT",
"version": "v2"
},
{
"created": "Thu, 25 Apr 2024 16:42:41 GMT",
"version": "v3"
}
] | 2024-04-26 | [
[
"Carullo",
"Gregorio",
""
],
[
"Albanesi",
"Simone",
""
],
[
"Nagar",
"Alessandro",
""
],
[
"Gamba",
"Rossella",
""
],
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Andrade",
"Tomas",
""
],
[
"Trenado",
"Juan",
""
... | The precise modeling of binary black hole coalescences in generic planar orbits is a crucial step to disentangle dynamical and isolated binary formation channels through gravitational-wave observations. The merger regime of such coalescences exhibits a significantly higher complexity compared to the quasicircular case,... |
2003.14107 | Rittick Roy | Rittick Roy and Sayan Chakrabarti | A study on black hole shadows in asymptotically de Sitter spacetimes | Minor clarifications added and grammatical mistakes corrected,
version accepted for publication in Physical Review D | Phys. Rev. D 102, 024059 (2020) | 10.1103/PhysRevD.102.024059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Previous works on black hole shadows have been primarily focused on studying
shadows in asymptotically flat and anti-de Sitter space times. In the present
work, we find general expressions for asymptotically de Sitter black hole
shadow as seen by static and comoving observers, for any spherically symmetric
black hole... | [
{
"created": "Tue, 31 Mar 2020 11:27:32 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Apr 2020 10:12:56 GMT",
"version": "v2"
},
{
"created": "Thu, 9 Jul 2020 10:36:57 GMT",
"version": "v3"
}
] | 2020-07-29 | [
[
"Roy",
"Rittick",
""
],
[
"Chakrabarti",
"Sayan",
""
]
] | Previous works on black hole shadows have been primarily focused on studying shadows in asymptotically flat and anti-de Sitter space times. In the present work, we find general expressions for asymptotically de Sitter black hole shadow as seen by static and comoving observers, for any spherically symmetric black hole s... |
1605.01983 | Soichiro Morisaki | Soichiro Morisaki, Jun'ichi Yokoyama, Kazunari Eda and Yousuke Itoh | Toward the detection of gravitational waves under non-Gaussian noises
II. Independent Component Analysis | 19 pages, 5 figures; Minor changes, accepted for publication in the
Proc. Jpn. Acad., Ser. B | null | 10.2183/pjab.92.336 | RESCEU-18/16 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a new analysis method to deal with stationary non-Gaussian
noises in gravitational wave detectors in terms of the independent component
analysis. First, we consider the simplest case where the detector outputs are
linear combinations of the inputs, consisting of signals and various noises,
and show that ... | [
{
"created": "Fri, 6 May 2016 16:03:12 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Aug 2016 05:43:33 GMT",
"version": "v2"
}
] | 2016-11-03 | [
[
"Morisaki",
"Soichiro",
""
],
[
"Yokoyama",
"Jun'ichi",
""
],
[
"Eda",
"Kazunari",
""
],
[
"Itoh",
"Yousuke",
""
]
] | We introduce a new analysis method to deal with stationary non-Gaussian noises in gravitational wave detectors in terms of the independent component analysis. First, we consider the simplest case where the detector outputs are linear combinations of the inputs, consisting of signals and various noises, and show that th... |
1302.2336 | Mairi Sakellariadou | Gaetano Lambiase, Mairi Sakellariadou, Antonio Stabile | Constraints on NonCommutative Spectral Action from Gravity Probe B and
Torsion Balance Experiments | 12 pages | JCAP12(2013)020 | 10.1088/1475-7516/2013/12/020 | KCL-PH-TH/2013-7 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Noncommutative spectral geometry offers a purely geometric explanation for
the standard model of strong and electroweak interactions, including a
geometric explanation for the origin of the Higgs field. Within this framework,
the gravitational, the electroweak and the strong forces are all described as
purely gravita... | [
{
"created": "Sun, 10 Feb 2013 15:22:29 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Dec 2013 20:05:33 GMT",
"version": "v2"
}
] | 2015-06-15 | [
[
"Lambiase",
"Gaetano",
""
],
[
"Sakellariadou",
"Mairi",
""
],
[
"Stabile",
"Antonio",
""
]
] | Noncommutative spectral geometry offers a purely geometric explanation for the standard model of strong and electroweak interactions, including a geometric explanation for the origin of the Higgs field. Within this framework, the gravitational, the electroweak and the strong forces are all described as purely gravitati... |
1910.10353 | Shiyang Hu | Shiyang Hu, Xin Wu, Guoqing Huang and Enwei Liang | A novel energy-conserving scheme for eight-dimensional systems | 17 pages, 6 figures | null | 10.3847/1538-4357/ab5061 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We design a novel, exactly energy-conserving implicit non-symplectic
integration method for an eight-dimensional Hamiltonian system with four
degrees of freedom. In our algorithm, each partial derivative of the
Hamiltonian with respect to one of phase-space variables is discretized by the
average of eight Hamiltonian... | [
{
"created": "Wed, 23 Oct 2019 05:07:23 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Dec 2019 06:17:38 GMT",
"version": "v2"
}
] | 2019-12-30 | [
[
"Hu",
"Shiyang",
""
],
[
"Wu",
"Xin",
""
],
[
"Huang",
"Guoqing",
""
],
[
"Liang",
"Enwei",
""
]
] | We design a novel, exactly energy-conserving implicit non-symplectic integration method for an eight-dimensional Hamiltonian system with four degrees of freedom. In our algorithm, each partial derivative of the Hamiltonian with respect to one of phase-space variables is discretized by the average of eight Hamiltonian d... |
2309.02946 | Alejandro Estrada | Alejandro Estrada and Leon Escobar-Diaz | Numerical Construction of initial data sets for inhomogeneous
cosmological space-times with spatial topology of $\mathbb{T}^3$ | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work, we numerically construct initial data sets for cosmological
space-times with a spatial topology of $\mathbb{T}^3$, which are generally
inhomogeneous. To do so, we implement a pseudo-spectral approach based on the
discrete Fourier transform for numerically solving Einstein's constraint
equations in an al... | [
{
"created": "Wed, 6 Sep 2023 12:25:40 GMT",
"version": "v1"
}
] | 2023-09-07 | [
[
"Estrada",
"Alejandro",
""
],
[
"Escobar-Diaz",
"Leon",
""
]
] | In this work, we numerically construct initial data sets for cosmological space-times with a spatial topology of $\mathbb{T}^3$, which are generally inhomogeneous. To do so, we implement a pseudo-spectral approach based on the discrete Fourier transform for numerically solving Einstein's constraint equations in an alge... |
1410.0665 | Eleni-Alexandra Kontou | Eleni-Alexandra Kontou and Ken D. Olum | Quantum inequality in spacetimes with small curvature | 21 pages | Phys. Rev. D 91, 104005 (2015) | 10.1103/PhysRevD.91.104005 | null | gr-qc math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum inequalities bound the extent to which weighted time averages of the
renormalized energy density of a quantum field can be negative. They have
mostly been proved in flat spacetime, but we need curved-spacetime inequalities
to disprove the existence of exotic phenomena, such as closed timelike curves.
In this ... | [
{
"created": "Thu, 2 Oct 2014 19:49:31 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Oct 2014 16:27:45 GMT",
"version": "v2"
}
] | 2015-05-13 | [
[
"Kontou",
"Eleni-Alexandra",
""
],
[
"Olum",
"Ken D.",
""
]
] | Quantum inequalities bound the extent to which weighted time averages of the renormalized energy density of a quantum field can be negative. They have mostly been proved in flat spacetime, but we need curved-spacetime inequalities to disprove the existence of exotic phenomena, such as closed timelike curves. In this wo... |
2111.00665 | Hiroki Matsui | Hiroki Matsui, Shinji Mukohyama, Atsushi Naruko | DeWitt boundary condition is consistent in Ho\v{r}ava-Lifshitz quantum
gravity | 7 pages, v2: final published version | Physics Letters B 833 (2022) 137340 | 10.1016/j.physletb.2022.137340 | YITP-21-128, IPMU21-0072 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In quantum cosmology the DeWitt boundary condition is a proposal to set the
wave function of the universe to vanish at the classical big-bang singularity.
In this Letter, we show that in many gravitational theories including general
relativity, the DeWitt wave function does not take a desired form once tensor
perturb... | [
{
"created": "Mon, 1 Nov 2021 02:41:13 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Aug 2022 03:58:31 GMT",
"version": "v2"
}
] | 2022-08-08 | [
[
"Matsui",
"Hiroki",
""
],
[
"Mukohyama",
"Shinji",
""
],
[
"Naruko",
"Atsushi",
""
]
] | In quantum cosmology the DeWitt boundary condition is a proposal to set the wave function of the universe to vanish at the classical big-bang singularity. In this Letter, we show that in many gravitational theories including general relativity, the DeWitt wave function does not take a desired form once tensor perturbat... |
1904.02747 | Rainer Verch | Rainer Verch | The D-CTC condition in quantum field theory | Contribution for the proceedings of the conference "Progress and
Visions in Quantum Theory in View of Gravity", Leipzig, 01-05 Oct 2018. 12
pages, 3 figures | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A condition proposed by David Deutsch to describe analogues of processes in
the presence of closed timelike curves (D-CTC condition) in bipartite quantum
systems is investigated within the framework of local relativistic quantum
field theory. The main result is that in relativistic quantum field theory on
spacetimes ... | [
{
"created": "Thu, 4 Apr 2019 18:56:34 GMT",
"version": "v1"
}
] | 2019-04-08 | [
[
"Verch",
"Rainer",
""
]
] | A condition proposed by David Deutsch to describe analogues of processes in the presence of closed timelike curves (D-CTC condition) in bipartite quantum systems is investigated within the framework of local relativistic quantum field theory. The main result is that in relativistic quantum field theory on spacetimes wh... |
2210.17504 | Di Wu | Di Wu, Shuang-Qing Wu | Revisiting mass formulas of the four-dimensional
Reissner-Nordstr\"{o}m-NUT-AdS solutions in a different metric form | 14 pages, match with the published version in PLB | Phys. Lett. B 846 (2023) 138227 | 10.1016/j.physletb.2023.138227 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Recently, the so-called ``consistent thermodynamics'' of the Lorentzian
Reissner-Nordstr\"{o}m (RN)-NUT-AdS$_4$ spacetimes has been pursued by a lot of
efforts via different means. Among these attempts, we had proposed a novel idea
that ``The NUT charge is a thermodynamical multihair" to successfully tackle
with the ... | [
{
"created": "Mon, 31 Oct 2022 17:29:30 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Mar 2023 11:48:41 GMT",
"version": "v2"
},
{
"created": "Fri, 29 Sep 2023 13:20:23 GMT",
"version": "v3"
},
{
"created": "Thu, 12 Oct 2023 01:03:45 GMT",
"version": "v4"
}
] | 2023-10-13 | [
[
"Wu",
"Di",
""
],
[
"Wu",
"Shuang-Qing",
""
]
] | Recently, the so-called ``consistent thermodynamics'' of the Lorentzian Reissner-Nordstr\"{o}m (RN)-NUT-AdS$_4$ spacetimes has been pursued by a lot of efforts via different means. Among these attempts, we had proposed a novel idea that ``The NUT charge is a thermodynamical multihair" to successfully tackle with the su... |
0706.0132 | Marcus Werner | M. C. Werner, A. O. Petters | Magnification relations for Kerr lensing and testing Cosmic Censorship | 13 pages, version 2: references added, minor changes. To appear in
Phys. Rev. D | Phys.Rev.D76:064024,2007 | 10.1103/PhysRevD.76.064024 | null | gr-qc astro-ph | null | A Kerr black hole with mass parameter m and angular momentum parameter a
acting as a gravitational lens gives rise to two images in the weak field
limit. We study the corresponding magnification relations, namely the signed
and absolute magnification sums and the centroid up to post-Newtonian order. We
show that ther... | [
{
"created": "Fri, 1 Jun 2007 12:15:06 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Aug 2007 10:23:00 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Werner",
"M. C.",
""
],
[
"Petters",
"A. O.",
""
]
] | A Kerr black hole with mass parameter m and angular momentum parameter a acting as a gravitational lens gives rise to two images in the weak field limit. We study the corresponding magnification relations, namely the signed and absolute magnification sums and the centroid up to post-Newtonian order. We show that there ... |
1102.3474 | Abhay Ashtekar | Abhay Ashtekar, Adam Henderson and David Sloan | A Hamiltonian Formulation of the BKL Conjecture | 26 pages, 3 figures. Two references added. Minor typos corrected. To
appear in PRD | Phys.Rev.D83:084024,2011 | 10.1103/PhysRevD.83.084024 | IGC-11/02-5 | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Belinskii, Khalatnikov and Lifshitz conjecture \cite{bkl1} posits that on
approach to a space-like singularity in general relativity the dynamics are
well approximated by `ignoring spatial derivatives in favor of time
derivatives.' In \cite{ahs1} we examined this idea from within a Hamiltonian
framework and provi... | [
{
"created": "Thu, 17 Feb 2011 02:09:59 GMT",
"version": "v1"
},
{
"created": "Sat, 12 Mar 2011 16:47:48 GMT",
"version": "v2"
}
] | 2011-05-10 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Henderson",
"Adam",
""
],
[
"Sloan",
"David",
""
]
] | The Belinskii, Khalatnikov and Lifshitz conjecture \cite{bkl1} posits that on approach to a space-like singularity in general relativity the dynamics are well approximated by `ignoring spatial derivatives in favor of time derivatives.' In \cite{ahs1} we examined this idea from within a Hamiltonian framework and provide... |
2107.06101 | Paolo Maraner | Paolo Maraner | Electromagnetic and gravitational interactions from Lagrangian mechanics | 27 pages | Annals of Physics 431 (2021) 168548 | 10.1016/j.aop.2021.168548 | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Background fields of electromagnetic and gravitational type emerge in the low
kinetic energy limit of any regular Lagrangian system and, in particular, in
the corresponding limit of any spacetime theory in which the free motion of
test particles is described by an unspecified regular Lagrangian.
Electromagnetic and g... | [
{
"created": "Sun, 11 Jul 2021 15:45:56 GMT",
"version": "v1"
}
] | 2021-07-14 | [
[
"Maraner",
"Paolo",
""
]
] | Background fields of electromagnetic and gravitational type emerge in the low kinetic energy limit of any regular Lagrangian system and, in particular, in the corresponding limit of any spacetime theory in which the free motion of test particles is described by an unspecified regular Lagrangian. Electromagnetic and gra... |
2009.12874 | Genly Le\'on | Andronikos Paliathanasis (DUT, Durban and Chile Austral U., Valdivia),
Genly Leon (Catolica del Norte U.) | Dynamics of a two scalar field cosmological model with phantom terms | 16 pages, 11 compound figures | Class. Quantum Grav. 38 075013 (2021) | 10.1088/1361-6382/abe2d7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a detailed analysis on the dynamics of a Chiral-like cosmological
model where the scalar fields can have negative kinetic terms. In particular,
we study the asymptotic dynamics for the gravitational field equations for four
different models in a spatially flat
Friedmann--Lema\^{\i}tre--Robertson--Walker ba... | [
{
"created": "Sun, 27 Sep 2020 15:36:19 GMT",
"version": "v1"
}
] | 2021-06-08 | [
[
"Paliathanasis",
"Andronikos",
"",
"DUT, Durban and Chile Austral U., Valdivia"
],
[
"Leon",
"Genly",
"",
"Catolica del Norte U."
]
] | We perform a detailed analysis on the dynamics of a Chiral-like cosmological model where the scalar fields can have negative kinetic terms. In particular, we study the asymptotic dynamics for the gravitational field equations for four different models in a spatially flat Friedmann--Lema\^{\i}tre--Robertson--Walker back... |
2102.02426 | Angel Rincon | Angel Rincon, Ernesto Contreras, Pedro Bargue\~no, Benjamin Koch and
Grigoris Panotopoulos | Four dimensional Einstein-power-Maxwell black hole solutions in
scale-dependent gravity | 12 pages, 2 figures, accepted for publication in Phys. Dark Univ | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work, we extend and generalize our previous work regarding the
scale dependence applied to black holes in the presence of non-linear
electrodynamics [1]. The starting point for this study is the
Einstein-power-Maxwell theory with a vanishing cosmological constant in (3+1)
dimensions, assuming a scale d... | [
{
"created": "Thu, 4 Feb 2021 05:56:14 GMT",
"version": "v1"
}
] | 2021-02-05 | [
[
"Rincon",
"Angel",
""
],
[
"Contreras",
"Ernesto",
""
],
[
"Bargueño",
"Pedro",
""
],
[
"Koch",
"Benjamin",
""
],
[
"Panotopoulos",
"Grigoris",
""
]
] | In the present work, we extend and generalize our previous work regarding the scale dependence applied to black holes in the presence of non-linear electrodynamics [1]. The starting point for this study is the Einstein-power-Maxwell theory with a vanishing cosmological constant in (3+1) dimensions, assuming a scale dep... |
gr-qc/9612037 | Lawrence C. Shepley | J.M. Pons, D.C. Salisbury, L.C. Shepley | Gauge transformations in the Lagrangian and Hamiltonian formalisms of
generally covariant theories | 12 pages, no figures; REVTeX; uses multicol,fancyheadings,eqsecnum;
to appear in Phys. Rev. D | null | 10.1103/PhysRevD.55.658 | null | gr-qc math-ph math.MP | null | We study spacetime diffeomorphisms in Hamiltonian and Lagrangian formalisms
of generally covariant systems. We show that the gauge group for such a system
is characterized by having generators which are projectable under the Legendre
map. The gauge group is found to be much larger than the original group of
spacetime... | [
{
"created": "Sun, 15 Dec 1996 20:08:40 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Pons",
"J. M.",
""
],
[
"Salisbury",
"D. C.",
""
],
[
"Shepley",
"L. C.",
""
]
] | We study spacetime diffeomorphisms in Hamiltonian and Lagrangian formalisms of generally covariant systems. We show that the gauge group for such a system is characterized by having generators which are projectable under the Legendre map. The gauge group is found to be much larger than the original group of spacetime d... |
1109.1730 | Bin Wang | Jian-Hua He, Bin Wang, Elcio Abdalla | Deep connection between f(R) gravity and the interacting dark sector
model | 9 pages, 2 figures, revised version, accepted for publication in
Phys. Rev. D | null | 10.1103/PhysRevD.84.123526 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the conformal equivalence between the $f(R)$ gravity and the
interacting dark sector model. We review the well-known result that the
conformal transformation physically corresponds to the mass dilation which
marks the strength of interaction between dark sectors. Instead of modeling
f(R) gravity in the Jor... | [
{
"created": "Thu, 8 Sep 2011 14:39:51 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Nov 2011 10:30:48 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"He",
"Jian-Hua",
""
],
[
"Wang",
"Bin",
""
],
[
"Abdalla",
"Elcio",
""
]
] | We examine the conformal equivalence between the $f(R)$ gravity and the interacting dark sector model. We review the well-known result that the conformal transformation physically corresponds to the mass dilation which marks the strength of interaction between dark sectors. Instead of modeling f(R) gravity in the Jorda... |
1510.06557 | Hao Xu | Hao Xu and Zhen-Ming Xu | Maxwell's equal area law for Lovelock Thermodynamics | 16 pages, 10 figures. V2: minor corrections and new references. V3:
more discussion about the relationship between latent heat and temperature
added. Accepted by IJMPD | Int. J. Mod. Phys. D 26 (2017) 1750037 | 10.1142/S0218271817500377 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the construction of Maxwell's equal area law for the Guass-Bonnet
AdS black holes in $d=5,6$ and third order Lovelock AdS black holes in $d=7,8$.
The equal area law can be used to find the number and location of the points of
intersection in the plots of Gibbs free energy, so that we can get the
thermodyna... | [
{
"created": "Thu, 22 Oct 2015 09:47:38 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Jan 2016 14:01:35 GMT",
"version": "v2"
},
{
"created": "Mon, 22 Aug 2016 15:44:00 GMT",
"version": "v3"
}
] | 2016-10-12 | [
[
"Xu",
"Hao",
""
],
[
"Xu",
"Zhen-Ming",
""
]
] | We present the construction of Maxwell's equal area law for the Guass-Bonnet AdS black holes in $d=5,6$ and third order Lovelock AdS black holes in $d=7,8$. The equal area law can be used to find the number and location of the points of intersection in the plots of Gibbs free energy, so that we can get the thermodynami... |
0804.2103 | Theocharis Apostolatos | Ioannis Deligiannis, Theocharis A. Apostolatos | Minimizing the kinematical effects on LISA's performance | 14 pages, 3 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | Proper tuning of the orbital characteristics of the three spacecrafts that
constitute the usual triangular configuration of the space-borne
gravitational-wave detector LISA, could minimize the breathing mode of its
arm-lengths. Since the three spacecrafts form three pairs of interferometric
arms, we have the freedom ... | [
{
"created": "Mon, 14 Apr 2008 15:02:58 GMT",
"version": "v1"
}
] | 2008-04-15 | [
[
"Deligiannis",
"Ioannis",
""
],
[
"Apostolatos",
"Theocharis A.",
""
]
] | Proper tuning of the orbital characteristics of the three spacecrafts that constitute the usual triangular configuration of the space-borne gravitational-wave detector LISA, could minimize the breathing mode of its arm-lengths. Since the three spacecrafts form three pairs of interferometric arms, we have the freedom to... |
1901.02953 | Carlos A. R. Herdeiro | Carlos A. R. Herdeiro, Eugen Radu | Black hole scalarisation from the breakdown of scale-invariance | 27 pages, 11 figures | Phys. Rev. D 99, 084039 (2019) | 10.1103/PhysRevD.99.084039 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Electro-vacuum black holes are scale-invariant; their energy-momentum tensor
is traceless. Quantum corrections of various sorts, however, can often produce
a trace anomaly and a breakdown of scale-invariance. The (quantum-corrected)
black hole solutions of the corresponding gravitational effective field theory
(EFT) ... | [
{
"created": "Wed, 9 Jan 2019 22:24:30 GMT",
"version": "v1"
}
] | 2019-04-24 | [
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
]
] | Electro-vacuum black holes are scale-invariant; their energy-momentum tensor is traceless. Quantum corrections of various sorts, however, can often produce a trace anomaly and a breakdown of scale-invariance. The (quantum-corrected) black hole solutions of the corresponding gravitational effective field theory (EFT) ha... |
1111.3565 | Danny Kermode | Danny Kermode, Dan Vollick | Gravitational Geons on the Brane | 14 pages with 9 figures. To appear in General Relativity and
Gravitation | null | 10.1007/s10714-011-1259-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we examine the possibility of static, spherically symmetric
gravitational geons on a 3 dimensional brane embedded in a 4+1 dimensional
space-time. We choose a specific g_tt for the brane-world space-time metric. We
then calculate g_rr analytically in the weak field limit and numerically for
stronger fi... | [
{
"created": "Tue, 15 Nov 2011 16:11:54 GMT",
"version": "v1"
}
] | 2015-06-03 | [
[
"Kermode",
"Danny",
""
],
[
"Vollick",
"Dan",
""
]
] | In this paper, we examine the possibility of static, spherically symmetric gravitational geons on a 3 dimensional brane embedded in a 4+1 dimensional space-time. We choose a specific g_tt for the brane-world space-time metric. We then calculate g_rr analytically in the weak field limit and numerically for stronger fiel... |
1107.1569 | Eugeny Babichev | Eugeny Babichev, Cedric Deffayet, Gilles Esposito-Farese | Constraints on Shift-Symmetric Scalar-Tensor Theories with a Vainshtein
Mechanism from Bounds on the Time Variation of G | RevTeX4 format; v.2: 5 pages, title changed, matches published
version | Phys. Rev. Lett. 107, 251102 (2011) | 10.1103/PhysRevLett.107.251102 | LPT-Orsay 11-111 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the current bounds on the time variation of the Newton constant
G can put severe constraints on many interesting scalar-tensor theories which
possess a shift symmetry and a nonminimal matter-scalar coupling. This
includes, in particular, Galileon-like models with a Vainshtein screening
mechanism. We unde... | [
{
"created": "Fri, 8 Jul 2011 07:31:46 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Jan 2012 14:03:05 GMT",
"version": "v2"
}
] | 2012-01-18 | [
[
"Babichev",
"Eugeny",
""
],
[
"Deffayet",
"Cedric",
""
],
[
"Esposito-Farese",
"Gilles",
""
]
] | We show that the current bounds on the time variation of the Newton constant G can put severe constraints on many interesting scalar-tensor theories which possess a shift symmetry and a nonminimal matter-scalar coupling. This includes, in particular, Galileon-like models with a Vainshtein screening mechanism. We underl... |
gr-qc/0604022 | Matyas Vasuth | M\'aty\'as Vas\'uth and Bal\'azs Mik\'oczi | Self interaction of spins in binary systems | 6 pages, Proceedings of the Albert Einstein Century International
Conference, Paris, France, 18-22 July, 2005 | null | 10.1063/1.2399660 | null | gr-qc | null | Beyond point mass effects various contributions add to the radiative
evolution of compact binaries. We present all the terms up to the second
post-Newtonian order contributing to the rate of increase of gravitational wave
frequency and the number of gravitational wave cycles left until the final
coalescence for binar... | [
{
"created": "Wed, 5 Apr 2006 19:18:10 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Vasúth",
"Mátyás",
""
],
[
"Mikóczi",
"Balázs",
""
]
] | Beyond point mass effects various contributions add to the radiative evolution of compact binaries. We present all the terms up to the second post-Newtonian order contributing to the rate of increase of gravitational wave frequency and the number of gravitational wave cycles left until the final coalescence for binary ... |
1810.00436 | Mark Bugden | Mark Bugden, Claudio Paganini | The $\Lambda$ to zero limit of spacetimes and its physical
interpretation | null | null | 10.1088/1361-6382/aaff0d | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the $\Lambda \to 0$ behaviour of Schwarzschild-de Sitter spacetime
and show, according to Geroch's notion of spacetime limits, that it converges
to the Schwarzschild spacetime. We use an embedding into $AdS_3$ to illustrate
and quantify this limiting behaviour. We use these quantitative observations to
estab... | [
{
"created": "Sun, 30 Sep 2018 18:21:18 GMT",
"version": "v1"
}
] | 2019-02-13 | [
[
"Bugden",
"Mark",
""
],
[
"Paganini",
"Claudio",
""
]
] | We study the $\Lambda \to 0$ behaviour of Schwarzschild-de Sitter spacetime and show, according to Geroch's notion of spacetime limits, that it converges to the Schwarzschild spacetime. We use an embedding into $AdS_3$ to illustrate and quantify this limiting behaviour. We use these quantitative observations to establi... |
1909.07602 | Andronikos Paliathanasis | Andronikos Paliathanasis | Symmetry Analysis In Inflationary Cosmology | 7 pages, no figures, published on the proceedings of "Modern
Treatment of Symmetries Differential Equations and Applications, Suranaree
University of Technology, Thailand (2019) | AIP Conference Proceedings 2153, 020015 (2019) | 10.1063/1.5125080 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We approach the cosmological inflation thought symmetries of differential
equations. We consider the general inflaton field in a homogeneous
Friedmann--Lema\^{\i}tre--Robertson--Walker spacetime and with the use of
conformal transformations we are able to write the generic algebraic solution
for the field equations. ... | [
{
"created": "Tue, 17 Sep 2019 05:47:48 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Oct 2019 07:07:58 GMT",
"version": "v2"
}
] | 2019-10-02 | [
[
"Paliathanasis",
"Andronikos",
""
]
] | We approach the cosmological inflation thought symmetries of differential equations. We consider the general inflaton field in a homogeneous Friedmann--Lema\^{\i}tre--Robertson--Walker spacetime and with the use of conformal transformations we are able to write the generic algebraic solution for the field equations. We... |
2305.14400 | Gopi Kant Goswami Dr | Anirudh Pradhan, Gopikant Goswami, Syamala Krishnannair | The Reconstruction of Constant Jerk Parameter with $f(R,T)$ Gravity in
Bianchi-I spacetime | 19 pages, 19 figures. The European Physical Journal Plus. 2023. arXiv
admin note: text overlap with arXiv:2303.14136 | null | 10.1140/epjp/s13360-023-04057-3 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We have developed a Bianchi I cosmological model of the universe in $f(R,T)$
gravity theory which fit good with the present day scenario of accelerating
universe. The model displays transition from deceleration in the past to the
acceleration at the present. As in the $\Lambda$CDM model, we have defined the
three ene... | [
{
"created": "Tue, 23 May 2023 09:08:35 GMT",
"version": "v1"
}
] | 2023-05-25 | [
[
"Pradhan",
"Anirudh",
""
],
[
"Goswami",
"Gopikant",
""
],
[
"Krishnannair",
"Syamala",
""
]
] | We have developed a Bianchi I cosmological model of the universe in $f(R,T)$ gravity theory which fit good with the present day scenario of accelerating universe. The model displays transition from deceleration in the past to the acceleration at the present. As in the $\Lambda$CDM model, we have defined the three energ... |
2209.12291 | Akash Kumar Mishra | Rajes Ghosh, Mostafizur Rahman, Akash K Mishra | Regularized Stable Kerr Black Hole: Cosmic Censorships, Shadow and
Quasi-Normal Modes | 11 pages, 5 figures, 1 table, Journal Version | Eur. Phys. J. C 83, 91 (2023) | 10.1140/epjc/s10052-023-11252-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole solutions in general relativity come with pathologies such as
singularity and mass inflation instability, which are believed to be cured by a
yet-to-be-found quantum theory of gravity. Without such consistent description,
one may model theory-agnostic phenomenological black holes that bypass the
aforesaid ... | [
{
"created": "Sun, 25 Sep 2022 18:31:16 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Feb 2023 13:18:56 GMT",
"version": "v2"
}
] | 2023-02-14 | [
[
"Ghosh",
"Rajes",
""
],
[
"Rahman",
"Mostafizur",
""
],
[
"Mishra",
"Akash K",
""
]
] | Black hole solutions in general relativity come with pathologies such as singularity and mass inflation instability, which are believed to be cured by a yet-to-be-found quantum theory of gravity. Without such consistent description, one may model theory-agnostic phenomenological black holes that bypass the aforesaid is... |
1810.01047 | Michele Oliosi | Katsuki Aoki, Antonio De Felice, Chunshan Lin, Shinji Mukohyama,
Michele Oliosi | Phenomenology in type-I minimally modified gravity | 14 pages, 1 figure, updated to match the version to appear in JCAP | null | 10.1088/1475-7516/2019/01/017 | WU-AP/1806/18, YITP-18-108, IPMU18-0158 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study cosmology in a class of minimally modified gravity (MMG) with two
local gravitational degrees of freedom. We classify modified gravity theories
into type-I and type-II: theories of type-I have an Einstein frame and can be
recast by change of variables as general relativity (GR) with a non-minimal
matter coup... | [
{
"created": "Tue, 2 Oct 2018 03:07:23 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Oct 2018 12:15:34 GMT",
"version": "v2"
},
{
"created": "Fri, 4 Jan 2019 14:00:35 GMT",
"version": "v3"
}
] | 2019-01-16 | [
[
"Aoki",
"Katsuki",
""
],
[
"De Felice",
"Antonio",
""
],
[
"Lin",
"Chunshan",
""
],
[
"Mukohyama",
"Shinji",
""
],
[
"Oliosi",
"Michele",
""
]
] | We study cosmology in a class of minimally modified gravity (MMG) with two local gravitational degrees of freedom. We classify modified gravity theories into type-I and type-II: theories of type-I have an Einstein frame and can be recast by change of variables as general relativity (GR) with a non-minimal matter coupli... |
1202.0839 | Michele Vallisneri | Pau Amaro-Seoane, Sofiane Aoudia, Stanislav Babak, Pierre Bin\'etruy,
Emanuele Berti, Alejandro Boh\'e, Chiara Caprini, Monica Colpi, Neil J.
Cornish, Karsten Danzmann, Jean-Fran\c{c}ois Dufaux, Jonathan Gair, Oliver
Jennrich, Philippe Jetzer, Antoine Klein, Ryan N. Lang, Alberto Lobo, Tyson
Littenberg, Sean T.... | Low-frequency gravitational-wave science with eLISA/NGO | 20 pages, 8 figures, proceedings of the 9th Amaldi Conference on
Gravitational Waves. Final journal version. For a longer exposition of the
eLISA science case, see http://arxiv.org/abs/1201.3621 | Pau Amaro-Seoane et al 2012 Class. Quantum Grav. 29 124016 | 10.1088/0264-9381/29/12/124016 | null | gr-qc astro-ph.CO astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the expected science performance of the New Gravitational-Wave
Observatory (NGO, a.k.a. eLISA), a mission under study by the European Space
Agency for launch in the early 2020s. eLISA will survey the low-frequency
gravitational-wave sky (from 0.1 mHz to 1 Hz), detecting and characterizing a
broad variety of... | [
{
"created": "Fri, 3 Feb 2012 22:46:24 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Sep 2012 20:19:16 GMT",
"version": "v2"
}
] | 2015-03-20 | [
[
"Amaro-Seoane",
"Pau",
""
],
[
"Aoudia",
"Sofiane",
""
],
[
"Babak",
"Stanislav",
""
],
[
"Binétruy",
"Pierre",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Bohé",
"Alejandro",
""
],
[
"Caprini",
"Chiara",
""
],... | We review the expected science performance of the New Gravitational-Wave Observatory (NGO, a.k.a. eLISA), a mission under study by the European Space Agency for launch in the early 2020s. eLISA will survey the low-frequency gravitational-wave sky (from 0.1 mHz to 1 Hz), detecting and characterizing a broad variety of s... |
gr-qc/9311021 | Thomas Thiemann | T. Thiemann | A completely solvable model with an infinite number of Dirac observables
for a real sector of complexified Ashtekar gravity | 31 pages (Latex), Preprint PITHA 93-33, August 93 | null | null | null | gr-qc | null | We introduce a reduced model for a real sector of complexified Ashtekar
gravity that does not correspond to a subset of Einstein's gravity but for
which the programme of canonical quantization can be carried out completely,
both, via the reduced phase space approach or along the lines of the algebraic
quantization pr... | [
{
"created": "Thu, 11 Nov 1993 23:25:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Thiemann",
"T.",
""
]
] | We introduce a reduced model for a real sector of complexified Ashtekar gravity that does not correspond to a subset of Einstein's gravity but for which the programme of canonical quantization can be carried out completely, both, via the reduced phase space approach or along the lines of the algebraic quantization prog... |
gr-qc/0211052 | Antonio F. Ranada | Antonio F. Ranada | The Pioneer riddle, the quantum vacuum and the acceleration of light | 11 pages, no figures | Europhys.Lett.63:653-659,2003 | 10.1209/epl/i2003-00587-x | null | gr-qc astro-ph hep-th | null | It is shown that the same phenomenological Newtonian model recently proposed
by the author to explain the cosmological evolution of the fine structure
constant suggests furthermore an explanation of the unmodelled acceleration
$a_P\simeq 8.5\times 10^{-10}m/s^2$ of the Pioneer 10/11 spaceships reported by
Anderson {\... | [
{
"created": "Wed, 13 Nov 2002 16:23:40 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Nov 2002 13:25:13 GMT",
"version": "v2"
},
{
"created": "Wed, 25 Jun 2003 17:25:12 GMT",
"version": "v3"
}
] | 2010-12-17 | [
[
"Ranada",
"Antonio F.",
""
]
] | It is shown that the same phenomenological Newtonian model recently proposed by the author to explain the cosmological evolution of the fine structure constant suggests furthermore an explanation of the unmodelled acceleration $a_P\simeq 8.5\times 10^{-10}m/s^2$ of the Pioneer 10/11 spaceships reported by Anderson {\em... |
2108.06874 | R. R. Cuzinatto | S. G. Vilhena, L. G. Medeiros, R. R. Cuzinatto | Gravitational waves in higher-order $R^{2}$ gravity | 37 pages plus appendices and references (single-column REVTeX file),
4 figures; v2: references added; v3: matches the published version; v4: typo
affecting the value of the E\"ot-Wash experiment constraint corrected
(results unchanged) | Physical Review D 104,084061 (2021) | 10.1103/PhysRevD.104.084061 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a comprehensive study of gravitational waves in the context of the
higher-order quadratic scalar curvature gravity, which encompasses the ordinary
Einstein-Hilbert term in the action plus an $R^{2}$ contribution and a term of
the type $R\square R$. The main focus is on gravitational waves emitted by
binary... | [
{
"created": "Mon, 16 Aug 2021 03:17:16 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Aug 2021 03:40:30 GMT",
"version": "v2"
},
{
"created": "Thu, 4 Nov 2021 20:38:58 GMT",
"version": "v3"
},
{
"created": "Sat, 3 Dec 2022 02:26:01 GMT",
"version": "v4"
}
] | 2022-12-06 | [
[
"Vilhena",
"S. G.",
""
],
[
"Medeiros",
"L. G.",
""
],
[
"Cuzinatto",
"R. R.",
""
]
] | We perform a comprehensive study of gravitational waves in the context of the higher-order quadratic scalar curvature gravity, which encompasses the ordinary Einstein-Hilbert term in the action plus an $R^{2}$ contribution and a term of the type $R\square R$. The main focus is on gravitational waves emitted by binary s... |
2306.15277 | Xiaolin Liu | Xiaolin Liu, Zhoujian Cao and Lijing Shao | Upgraded waveform model of eccentric binary black hole based on
effective-one-body-numerical-relativity for spin-aligned binary black holes | 15 pages, 10 figures | International Journal of Modern Physics D VOL. 32, NO. 04 (2023) | 10.1142/S0218271823500153 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Effective one body numerical relativity waveform models for spin aligned
binary black holes (SEOBNR) are based on the effective one body theoretical
framework and numerical relativity simulation results. SEOBNR models have
evolved through version 1 to version 4. We recently extended SEOBNRv1 model to
SEOBNRE (Effecti... | [
{
"created": "Tue, 27 Jun 2023 08:07:11 GMT",
"version": "v1"
}
] | 2023-06-28 | [
[
"Liu",
"Xiaolin",
""
],
[
"Cao",
"Zhoujian",
""
],
[
"Shao",
"Lijing",
""
]
] | Effective one body numerical relativity waveform models for spin aligned binary black holes (SEOBNR) are based on the effective one body theoretical framework and numerical relativity simulation results. SEOBNR models have evolved through version 1 to version 4. We recently extended SEOBNRv1 model to SEOBNRE (Effective... |
2311.17462 | Shahar Hod | Shahar Hod | Lower bound on the radii of light rings in traceless black-hole
spacetimes | 10 pages | Journal of High Energy Physics 12, 178 (2023) | null | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | Photonspheres, curved hypersurfaces on which massless particles can perform
closed geodesic motions around highly compact objects, are an integral part of
generic black-hole spacetimes. In the present compact paper we prove, using
analytical techniques, that the innermost light rings of spherically symmetric
hairy bl... | [
{
"created": "Wed, 29 Nov 2023 09:06:00 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Dec 2023 17:30:01 GMT",
"version": "v2"
}
] | 2024-01-01 | [
[
"Hod",
"Shahar",
""
]
] | Photonspheres, curved hypersurfaces on which massless particles can perform closed geodesic motions around highly compact objects, are an integral part of generic black-hole spacetimes. In the present compact paper we prove, using analytical techniques, that the innermost light rings of spherically symmetric hairy blac... |
1803.08815 | Salvatore Capozziello | Salvatore Capozziello, Shin'ichi Nojiri, Sergei D. Odintsov | The role of energy conditions in $f(R)$ cosmology | 13 pages, to be published in Physics Letters B | null | 10.1016/j.physletb.2018.03.064 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Energy conditions can play an important role in defining the cosmological
evolution. Specifically acceleration/deceleration of cosmic fluid, as well as
the emergence of Big Rip singularities, can be related to the constraints
imposed by the energy conditions. Here we discuss this issue for $f(R)$ gravity
considering ... | [
{
"created": "Fri, 23 Mar 2018 14:30:03 GMT",
"version": "v1"
}
] | 2018-05-09 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Nojiri",
"Shin'ichi",
""
],
[
"Odintsov",
"Sergei D.",
""
]
] | Energy conditions can play an important role in defining the cosmological evolution. Specifically acceleration/deceleration of cosmic fluid, as well as the emergence of Big Rip singularities, can be related to the constraints imposed by the energy conditions. Here we discuss this issue for $f(R)$ gravity considering al... |
1709.05081 | Fairoos C | C. Fairoos, Avirup Ghosh, Sudipta Sarkar | Massless charged particles: Cosmic censorship, and Third law of Black
Hole Mechanics | 12 pages, 9 figures, Minor changes in the reference section | Phys. Rev. D 96, 084013 (2017) | 10.1103/PhysRevD.96.084013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The formulation of the laws of black hole mechanics assumes the stability of
black holes under perturbations in accordance with the "cosmic censorship
hypothesis"(CCH). CCH prohibits the formation of a naked singularity by a
physical process from a regular black hole solution with an event horizon.
Earlier studies sh... | [
{
"created": "Fri, 15 Sep 2017 07:22:38 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Oct 2017 05:59:51 GMT",
"version": "v2"
}
] | 2017-10-13 | [
[
"Fairoos",
"C.",
""
],
[
"Ghosh",
"Avirup",
""
],
[
"Sarkar",
"Sudipta",
""
]
] | The formulation of the laws of black hole mechanics assumes the stability of black holes under perturbations in accordance with the "cosmic censorship hypothesis"(CCH). CCH prohibits the formation of a naked singularity by a physical process from a regular black hole solution with an event horizon. Earlier studies show... |
2311.16936 | Saeed Ullah Khan | Saeed Ullah Khan, Javlon Rayimbaev and Zdenek Stuchl\'ik | Charged particle motion and acceleration around Kerr-MOG black hole | 15 Pages, 8 Figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the most important issues in relativistic astrophysics is to explain
the origin mechanisms of (ultra)high energy charged particle components of
cosmic rays. Black holes (BHs) being huge reservoirs of (gravitational) energy
can be candidates for such particle sources. The main idea of this work is to
study the ... | [
{
"created": "Tue, 28 Nov 2023 16:37:29 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Apr 2024 08:05:50 GMT",
"version": "v2"
}
] | 2024-04-17 | [
[
"Khan",
"Saeed Ullah",
""
],
[
"Rayimbaev",
"Javlon",
""
],
[
"Stuchlík",
"Zdenek",
""
]
] | One of the most important issues in relativistic astrophysics is to explain the origin mechanisms of (ultra)high energy charged particle components of cosmic rays. Black holes (BHs) being huge reservoirs of (gravitational) energy can be candidates for such particle sources. The main idea of this work is to study the ef... |
2212.00591 | Salvador Mengual Sendra | Salvador Mengual, Joan Josep Ferrando and Juan Antonio S\'aez | Hydrodynamic approach to the Synge gas | 11 pages, 1 figure | Phys. Rev. D 106 (2022) 124032 | 10.1103/PhysRevD.106.124032 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The necessary and sufficient conditions for a perfect energy tensor to
describe the energy evolutions of a monoatomic relativistic Synge gas are
obtained. Then, a Rainich-like theory for the Einstein-Synge solutions can be
constructed. Equations of state approximating that of a Synge gas at low or at
high temperature... | [
{
"created": "Thu, 1 Dec 2022 15:29:02 GMT",
"version": "v1"
}
] | 2022-12-23 | [
[
"Mengual",
"Salvador",
""
],
[
"Ferrando",
"Joan Josep",
""
],
[
"Sáez",
"Juan Antonio",
""
]
] | The necessary and sufficient conditions for a perfect energy tensor to describe the energy evolutions of a monoatomic relativistic Synge gas are obtained. Then, a Rainich-like theory for the Einstein-Synge solutions can be constructed. Equations of state approximating that of a Synge gas at low or at high temperatures,... |
gr-qc/0404112 | Claus Gerhardt | Claus Gerhardt | The inverse mean curvature flow in Robertson-Walker spaces and its
application to cosmology | 9 pages, a pdf version can also be retrieved from
http://www.math.uni-heidelberg.de/studinfo/gerhardt/rw.pdf and bibtex data
from http://www.math.uni-heidelberg.de/studinfo/gerhardt/bibtexcgrw.html, v2:
typos corrected | Methods Appl.Anal. 13 (2006) 19-28 | null | null | gr-qc hep-th math.DG | null | We consider the inverse mean curvature flow in Robertson-Walker spacetimes
that satisfy the Einstein equations and have a big crunch singularity and prove
that under natural conditions the rescaled inverse mean curvature flow provides
a smooth transition from big crunch to big bang. We also construct an example
showi... | [
{
"created": "Tue, 27 Apr 2004 17:03:27 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Apr 2004 10:14:37 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Gerhardt",
"Claus",
""
]
] | We consider the inverse mean curvature flow in Robertson-Walker spacetimes that satisfy the Einstein equations and have a big crunch singularity and prove that under natural conditions the rescaled inverse mean curvature flow provides a smooth transition from big crunch to big bang. We also construct an example showing... |
1610.09391 | Grant Meadors | Grant David Meadors, Evan Goetz, Keith Riles, Teviet Creighton,
Florent Robinet | Searches for continuous gravitational waves from Scorpius X-1 and XTE
J1751-305 in LIGO's sixth science run | 14 pages, 6 figures | Physical Review D 95, 042005 (2017) | 10.1103/PhysRevD.95.042005 | LIGO P1500039 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scorpius X-1 (Sco X-1) and X-ray transient (XTE) J1751-305 are Low-Mass X-ray
Binaries (LMXBs) that may emit continuous gravitational waves detectable in the
band of ground-based interferometric observatories. Neutron stars in LMXBs
could reach a torque-balance steady-state equilibrium in which angular momentum
addit... | [
{
"created": "Fri, 28 Oct 2016 20:22:27 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Feb 2017 15:49:48 GMT",
"version": "v2"
}
] | 2017-02-24 | [
[
"Meadors",
"Grant David",
""
],
[
"Goetz",
"Evan",
""
],
[
"Riles",
"Keith",
""
],
[
"Creighton",
"Teviet",
""
],
[
"Robinet",
"Florent",
""
]
] | Scorpius X-1 (Sco X-1) and X-ray transient (XTE) J1751-305 are Low-Mass X-ray Binaries (LMXBs) that may emit continuous gravitational waves detectable in the band of ground-based interferometric observatories. Neutron stars in LMXBs could reach a torque-balance steady-state equilibrium in which angular momentum additio... |
1504.08209 | Carlos A. R. Herdeiro | Carlos A. R. Herdeiro, Eugen Radu | Asymptotically flat black holes with scalar hair: a review | 35 pages, 1 table, to appear in a special volume of the IJMPD,
dedicated to the VII Black Holes Workshop, Aveiro, Portugal, 18-19 December
2014; v2. Minor corrections | null | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the status of black hole solutions with non-trivial scalar fields
but no gauge fields, in four dimensional asymptotically flat space-times,
reviewing both classical results and recent developments. We start by providing
a simple illustration on the physical difference between black holes in
electro-vacuum... | [
{
"created": "Thu, 30 Apr 2015 13:10:22 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Dec 2018 23:14:31 GMT",
"version": "v2"
}
] | 2018-12-20 | [
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
]
] | We consider the status of black hole solutions with non-trivial scalar fields but no gauge fields, in four dimensional asymptotically flat space-times, reviewing both classical results and recent developments. We start by providing a simple illustration on the physical difference between black holes in electro-vacuum a... |
2008.13554 | Ryuichi Fujita | Ryuichi Fujita and Masaru Shibata | Extreme mass ratio inspirals on the equatorial plane in the adiabatic
order | 18 pages, 18 figures, published in Phys. Rev. D, supplementary data
files available at https://sites.google.com/view/bhpc1996/home | Phys. Rev. D 102, 064005 (2020) | 10.1103/PhysRevD.102.064005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute gravitational waves from inspiraling stellar-mass compact objects
on the equatorial plane of a massive spinning black hole (BH). Our inspiral
orbits are computed by taking into account the adiabatic change of orbital
parameters due to gravitational radiation in the lowest order in mass ratio. We
employ an ... | [
{
"created": "Mon, 31 Aug 2020 12:39:01 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Sep 2020 11:44:46 GMT",
"version": "v2"
}
] | 2020-09-10 | [
[
"Fujita",
"Ryuichi",
""
],
[
"Shibata",
"Masaru",
""
]
] | We compute gravitational waves from inspiraling stellar-mass compact objects on the equatorial plane of a massive spinning black hole (BH). Our inspiral orbits are computed by taking into account the adiabatic change of orbital parameters due to gravitational radiation in the lowest order in mass ratio. We employ an in... |
1703.06331 | Nishanth Abu Gudapati | Nishanth Gudapati | On 3+1 Lorentzian Einstein Manifolds with One Rotational Isometry | null | Gen Relativ Gravit (2018) 50: 93 | 10.1007/s10714-018-2404-2 | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider 3+1 rotationally symmetric Lorentzian Einstein spacetime
manifolds with $\Lambda >0$ and reduce the equations to 2+1 Einstein equations
coupled to `shifted' wave maps. Subsequently, we prove various (explicit)
positive mass-energy theorems. No smallness is assumed.
| [
{
"created": "Sat, 18 Mar 2017 18:24:43 GMT",
"version": "v1"
}
] | 2018-07-23 | [
[
"Gudapati",
"Nishanth",
""
]
] | We consider 3+1 rotationally symmetric Lorentzian Einstein spacetime manifolds with $\Lambda >0$ and reduce the equations to 2+1 Einstein equations coupled to `shifted' wave maps. Subsequently, we prove various (explicit) positive mass-energy theorems. No smallness is assumed. |
gr-qc/0511159 | Vitaly Vanchurin | Vitaly Vanchurin, Ken D. Olum and Alexander Vilenkin | Scaling of cosmic string loops | Added discussion of gravitational wave bounds; other minor changes | Phys.Rev. D74 (2006) 063527 | 10.1103/PhysRevD.74.063527 | null | gr-qc astro-ph hep-ph hep-th | null | We study the spectrum of loops as a part of a complete network of cosmic
strings in flat spacetime. After a long transient regime, characterized by
production of small loops at the scale of the initial conditions, it appears
that a true scaling regime takes over. In this final regime the characteristic
length of loop... | [
{
"created": "Tue, 29 Nov 2005 23:39:00 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Dec 2005 21:39:18 GMT",
"version": "v2"
},
{
"created": "Mon, 24 Apr 2006 19:07:35 GMT",
"version": "v3"
},
{
"created": "Tue, 20 Jun 2006 16:19:09 GMT",
"version": "v4"
}
] | 2009-11-11 | [
[
"Vanchurin",
"Vitaly",
""
],
[
"Olum",
"Ken D.",
""
],
[
"Vilenkin",
"Alexander",
""
]
] | We study the spectrum of loops as a part of a complete network of cosmic strings in flat spacetime. After a long transient regime, characterized by production of small loops at the scale of the initial conditions, it appears that a true scaling regime takes over. In this final regime the characteristic length of loops ... |
gr-qc/0403035 | Jose A. Gonzalez | Miguel Alcubierre, Jose A. Gonzalez and Marcelo Salgado | Dynamical evolution of unstable self-gravitating scalar solitons | 11 pages, 16 figures, submitted to Phys. Rev. D | Phys.Rev. D70 (2004) 064016 | 10.1103/PhysRevD.70.064016 | null | gr-qc | null | Recently, static and spherically symmetric configurations of globally regular
self-gravitating scalar solitons were found. These configurations are unstable
with respect to radial linear perturbations. In this paper we study the
dynamical evolution of such configurations and show that, depending on the sign
of the in... | [
{
"created": "Mon, 8 Mar 2004 23:30:13 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Alcubierre",
"Miguel",
""
],
[
"Gonzalez",
"Jose A.",
""
],
[
"Salgado",
"Marcelo",
""
]
] | Recently, static and spherically symmetric configurations of globally regular self-gravitating scalar solitons were found. These configurations are unstable with respect to radial linear perturbations. In this paper we study the dynamical evolution of such configurations and show that, depending on the sign of the init... |
gr-qc/0309095 | Stephane Fay | Stephane Fay | Isotropisation of the minimally coupled scalar-tensor theory with a
massive scalar field and a perfect fluid in the Bianchi type I model | 13 pages | Class. Quant. Grav., Vol 19, 2, 2002 | null | null | gr-qc | null | We look for necessary conditions such that minimally coupled scalar-tensor
theory with a massive scalar field and a perfect fluid in the Bianchi type I
model isotropises. Then we derive the dynamical asymptotical properties of the
Universe.
| [
{
"created": "Fri, 19 Sep 2003 12:23:04 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Fay",
"Stephane",
""
]
] | We look for necessary conditions such that minimally coupled scalar-tensor theory with a massive scalar field and a perfect fluid in the Bianchi type I model isotropises. Then we derive the dynamical asymptotical properties of the Universe. |
gr-qc/9910041 | S. Mignemi | S. Mignemi | Primary scalar hair in dilatonic theories with modulus fields | 15 pages, plain TeX | Phys.Rev. D62 (2000) 024014 | 10.1103/PhysRevD.62.024014 | INFNCA-TH9908 | gr-qc | null | We study the general spherical symmetric solutions of dilaton-modulus gravity
non-minimally coupled to a Maxwell field, using methods from the theory of
dynamical systems. We show that the solutions can be classified by the mass,
the electric charge, and a third parameter which we argue can be related to a
scalar cha... | [
{
"created": "Tue, 12 Oct 1999 15:03:12 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Mignemi",
"S.",
""
]
] | We study the general spherical symmetric solutions of dilaton-modulus gravity non-minimally coupled to a Maxwell field, using methods from the theory of dynamical systems. We show that the solutions can be classified by the mass, the electric charge, and a third parameter which we argue can be related to a scalar charg... |
0807.0214 | Tomas Ledvinka | Tomas Ledvinka, Gerhard Schaefer and Jiri Bicak | Relativistic Closed-Form Hamiltonian for Many-Body Gravitating Systems
in the Post-Minkowskian Approximation | 4 pages | Phys.Rev.Lett.100:251101,2008 | 10.1103/PhysRevLett.100.251101 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hamiltonian for a system of relativistic bodies interacting by their
gravitational field is found in the post-Minkowskian approximation, including
all terms linear in the gravitational constant. It is given in a surprisingly
simple closed form as a function of canonical variables describing the bodies
only. The f... | [
{
"created": "Tue, 1 Jul 2008 18:36:08 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Ledvinka",
"Tomas",
""
],
[
"Schaefer",
"Gerhard",
""
],
[
"Bicak",
"Jiri",
""
]
] | The Hamiltonian for a system of relativistic bodies interacting by their gravitational field is found in the post-Minkowskian approximation, including all terms linear in the gravitational constant. It is given in a surprisingly simple closed form as a function of canonical variables describing the bodies only. The fie... |
0908.2771 | Mark Durkee | Mark Durkee and Harvey S. Reall | A higher-dimensional generalization of the geodesic part of the
Goldberg-Sachs theorem | 16 pages | Class. Quantum Grav. 26 (2009) 245005 | 10.1088/0264-9381/26/24/245005 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In more than four spacetime dimensions, a multiple Weyl-aligned null
direction (WAND) need not be geodesic. It is proved that any higher-dimensional
Einstein spacetime admitting a non-geodesic multiple WAND also admits a
geodesic multiple WAND. All five-dimensional Einstein spacetimes admitting a
non-geodesic multipl... | [
{
"created": "Wed, 19 Aug 2009 15:27:04 GMT",
"version": "v1"
}
] | 2010-01-04 | [
[
"Durkee",
"Mark",
""
],
[
"Reall",
"Harvey S.",
""
]
] | In more than four spacetime dimensions, a multiple Weyl-aligned null direction (WAND) need not be geodesic. It is proved that any higher-dimensional Einstein spacetime admitting a non-geodesic multiple WAND also admits a geodesic multiple WAND. All five-dimensional Einstein spacetimes admitting a non-geodesic multiple ... |
1402.2514 | Antonin Coutant | Antonin Coutant and Renaud Parentani | Hawking radiation with dispersion: The broadened horizon paradigm | 6 pages, 4 figures, published version | Phys. Rev. D 90, 121501 (2014) | 10.1103/PhysRevD.90.121501 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To identify what replaces the key notion of black hole horizon when working
with theories which break Lorentz invariance at high energy, we study the modes
responsible for the Hawking effect in the presence of high frequency
dispersion. We show that they are regularized across the horizon over a short
length which on... | [
{
"created": "Tue, 11 Feb 2014 15:03:50 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Nov 2014 08:55:37 GMT",
"version": "v2"
}
] | 2014-12-10 | [
[
"Coutant",
"Antonin",
""
],
[
"Parentani",
"Renaud",
""
]
] | To identify what replaces the key notion of black hole horizon when working with theories which break Lorentz invariance at high energy, we study the modes responsible for the Hawking effect in the presence of high frequency dispersion. We show that they are regularized across the horizon over a short length which only... |
gr-qc/0503073 | Fabrizio Canfora | F. Canfora and G. Vilasi | Does the Holographic Principle determine the Gravitational Interaction? | 12 pages, no figures, added references | Phys.Lett. B614 (2005) 131-139 | 10.1016/j.physletb.2005.04.013 | null | gr-qc astro-ph hep-th | null | It is likely that the holographic principle will be a consequence of the
would be theory of quantum gravity. Thus, it is interesting to try to go in the
opposite direction: can the holographic principle fix the gravitational
interaction? It is shown that the classical gravitational interaction is well
inside the set ... | [
{
"created": "Thu, 17 Mar 2005 08:38:02 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Mar 2005 08:24:20 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Canfora",
"F.",
""
],
[
"Vilasi",
"G.",
""
]
] | It is likely that the holographic principle will be a consequence of the would be theory of quantum gravity. Thus, it is interesting to try to go in the opposite direction: can the holographic principle fix the gravitational interaction? It is shown that the classical gravitational interaction is well inside the set of... |
1801.08402 | A. Emrah Y\"ukselci | A. Sava\c{s} Arapo\u{g}lu, Ezgi Canay, A. Emrah Y\"ukselci | Dynamical System Analysis of a Five-Dimensional Cosmological Model | 14 pages, 2 figures; matches the published version | Astrophys Space Sci (2018) 363: 215 | 10.1007/s10509-018-3436-5 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A five-dimensional cosmological model including a single perfect fluid is
studied in the framework of dynamical system analysis. All the critical points
of the system with their stability properties are listed and some
representative phase diagrams are explicitly shown. It is found that the
stabilization of the extra... | [
{
"created": "Thu, 25 Jan 2018 14:01:18 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Feb 2020 11:55:54 GMT",
"version": "v2"
}
] | 2020-02-17 | [
[
"Arapoğlu",
"A. Savaş",
""
],
[
"Canay",
"Ezgi",
""
],
[
"Yükselci",
"A. Emrah",
""
]
] | A five-dimensional cosmological model including a single perfect fluid is studied in the framework of dynamical system analysis. All the critical points of the system with their stability properties are listed and some representative phase diagrams are explicitly shown. It is found that the stabilization of the extra d... |
2306.17185 | Yurii Ignat'ev | Yu.G. Ignat'ev | Evolution of spherical perturbations in the cosmological environment of
degenerate scalarly charged fermions with the Higgs scalar interaction | 24 pages, 9 figures, 31 references | Theoretical and Mathematic Physics 215 (2023) 862 | 10.1134/S0040577923060089 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A mathematical model is constructed for the evolution of spherical
perturbations in a cosmological one-component statistical system of completely
degenerate scalarly charged fermions with a scalar Higgs interaction. A
complete system of self-consistent equations for small perturbations describing
the evolution of sph... | [
{
"created": "Thu, 22 Jun 2023 21:32:54 GMT",
"version": "v1"
}
] | 2023-07-03 | [
[
"Ignat'ev",
"Yu. G.",
""
]
] | A mathematical model is constructed for the evolution of spherical perturbations in a cosmological one-component statistical system of completely degenerate scalarly charged fermions with a scalar Higgs interaction. A complete system of self-consistent equations for small perturbations describing the evolution of spher... |
gr-qc/9601011 | Jose Antonio Zapata | Henri Waelbroeck (Instituto de Ciencias Nucleares, UNAM, Mexico) and
Jose A. Zapata (Center for Gravitational Physics and Geometry, PennState,
USA) | $2+1$ Covariant Lattice Theory and t'Hooft's Formulation | 10 pages of text. One figure available from J.A. Zapata upon request | Class.Quant.Grav. 13 (1996) 1761-1768 | 10.1088/0264-9381/13/7/009 | CGPG-96/1-2 | gr-qc | null | We show that 't Hooft's representation of (2+1)-dimensional gravity in terms
of flat polygonal tiles is closely related to a gauge-fixed version of the
covariant Hamiltonian lattice theory. 't Hooft's gauge is remarkable in that it
leads to a Hamiltonian which is a linear sum of vertex Hamiltonians, each of
which is ... | [
{
"created": "Tue, 9 Jan 1996 19:17:19 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Waelbroeck",
"Henri",
"",
"Instituto de Ciencias Nucleares, UNAM, Mexico"
],
[
"Zapata",
"Jose A.",
"",
"Center for Gravitational Physics and Geometry, PennState,\n USA"
]
] | We show that 't Hooft's representation of (2+1)-dimensional gravity in terms of flat polygonal tiles is closely related to a gauge-fixed version of the covariant Hamiltonian lattice theory. 't Hooft's gauge is remarkable in that it leads to a Hamiltonian which is a linear sum of vertex Hamiltonians, each of which is de... |
1803.03873 | Felipe Asenjo | Sergio A. Hojman and Felipe A. Asenjo | Non--geodesic circular motion of massive spinning test bodies | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent interest on studying possible violations of the Equivalence Principle
has led to the development of space satellite missions testing it for bodies
moving on circular orbits around Earth. This experiment establishes that the
validity of the Equivalence Principle is independent of the composition of
bodies. Howe... | [
{
"created": "Sun, 11 Mar 2018 01:11:33 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Oct 2018 14:33:09 GMT",
"version": "v2"
}
] | 2018-10-04 | [
[
"Hojman",
"Sergio A.",
""
],
[
"Asenjo",
"Felipe A.",
""
]
] | Recent interest on studying possible violations of the Equivalence Principle has led to the development of space satellite missions testing it for bodies moving on circular orbits around Earth. This experiment establishes that the validity of the Equivalence Principle is independent of the composition of bodies. Howeve... |
1011.4948 | Veronika E. Hubeny | Veronika E. Hubeny | The Fluid/Gravity Correspondence: a new perspective on the Membrane
Paradigm | 20 pages, 4 figures, Contribution (plenary lecture) to the
Proceedings of the 19th International Conference on General Relativity and
Gravitation, Mexico City, July 5-9, 2010 v2: reference added + minor changes,
as in the published CQG version | Class.Quant.Grav.28:114007,2011 | 10.1088/0264-9381/28/11/114007 | null | gr-qc hep-th physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This talk gives an overview of the recently-formulated Fluid/Gravity
correspondence, which was developed in the context of gauge/gravity duality.
Mathematically, it posits that Einstein's equations (with negative cosmological
constant) in d+1 dimensions capture the (generalized) Navier-Stokes equations
in d dimension... | [
{
"created": "Mon, 22 Nov 2010 21:01:02 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Feb 2011 10:22:54 GMT",
"version": "v2"
}
] | 2011-07-19 | [
[
"Hubeny",
"Veronika E.",
""
]
] | This talk gives an overview of the recently-formulated Fluid/Gravity correspondence, which was developed in the context of gauge/gravity duality. Mathematically, it posits that Einstein's equations (with negative cosmological constant) in d+1 dimensions capture the (generalized) Navier-Stokes equations in d dimensions.... |
gr-qc/0303004 | W. A. van Leeuwen | P.G. Miedema, W.A. van Leeuwen | Density Perturbations in the Early Universe | Conclusions unchanged. Rewritten to make all details clear.
References added. Criticism to former gauge-invariant theories removed. Title
changed. 49 pages, 2 tables, no figures | null | null | null | gr-qc astro-ph | null | We propose a way to construct manifestly gauge independent quantities out of
the gauge dependent quantities occurring in the linearized Einstein equations.
Thereupon, we show that these gauge-invariant combinations can be identified
with measurable perturbations to the particle and energy densities.
In the radiatio... | [
{
"created": "Sat, 1 Mar 2003 20:37:25 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Apr 2004 13:09:31 GMT",
"version": "v2"
},
{
"created": "Mon, 1 Nov 2004 20:54:56 GMT",
"version": "v3"
},
{
"created": "Sun, 6 Nov 2005 14:13:01 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Miedema",
"P. G.",
""
],
[
"van Leeuwen",
"W. A.",
""
]
] | We propose a way to construct manifestly gauge independent quantities out of the gauge dependent quantities occurring in the linearized Einstein equations. Thereupon, we show that these gauge-invariant combinations can be identified with measurable perturbations to the particle and energy densities. In the radiation-do... |
0707.2153 | Thomas Buchert | Thomas Buchert | Dark Energy from structure: a status report | Invited Review for a special Gen. Rel. Grav. issue on Dark Energy, 59
pages, 2 figures; matches published version | Gen.Rel.Grav.40:467-527,2008 | 10.1007/s10714-007-0554-8 | null | gr-qc astro-ph hep-th | null | The effective evolution of an inhomogeneous universe model in any theory of
gravitation may be described in terms of spatially averaged variables. In
Einstein's theory, restricting attention to scalar variables, this evolution
can be modeled by solutions of a set of Friedmann equations for an effective
volume scale f... | [
{
"created": "Sat, 14 Jul 2007 14:23:00 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Sep 2007 10:56:21 GMT",
"version": "v2"
},
{
"created": "Mon, 3 Dec 2007 15:16:22 GMT",
"version": "v3"
}
] | 2010-04-06 | [
[
"Buchert",
"Thomas",
""
]
] | The effective evolution of an inhomogeneous universe model in any theory of gravitation may be described in terms of spatially averaged variables. In Einstein's theory, restricting attention to scalar variables, this evolution can be modeled by solutions of a set of Friedmann equations for an effective volume scale fac... |
gr-qc/0702070 | John W. Moffat | J. W. Moffat | Non-Singular Spherically Symmetric Solution in Einstein-Scalar-Tensor
Gravity | 13 pages, 6 figures, LaTex file. Revised manuscript. Additional minor
revisions | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A static spherically symmetric metric in Einstein-scalar-tensor gravity
theory with a scalar field potential $V[\phi]$ is non-singular for all real
values of the coordinates. It does not have a black hole event horizon and
there is no essential singularity at the origin of coordinates. The weak energy
condition $\rho... | [
{
"created": "Tue, 13 Feb 2007 15:37:30 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Mar 2007 09:03:13 GMT",
"version": "v2"
},
{
"created": "Wed, 28 Nov 2007 19:56:23 GMT",
"version": "v3"
},
{
"created": "Wed, 11 Jun 2008 15:30:56 GMT",
"version": "v4"
}
] | 2008-06-11 | [
[
"Moffat",
"J. W.",
""
]
] | A static spherically symmetric metric in Einstein-scalar-tensor gravity theory with a scalar field potential $V[\phi]$ is non-singular for all real values of the coordinates. It does not have a black hole event horizon and there is no essential singularity at the origin of coordinates. The weak energy condition $\rho_\... |
1006.3428 | Dr. Bikash Chandra Paul | B. C. Paul (North Bengal University) | Holographic Dark Energy Model with Modified Variable Chaplygin Gas | 17 pages, 1 fig | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter we consider a correspondence between holographic dark energy
and variable modified Chaplygin gas to obtain a holographic dark energy model
of the universe. The corresponding potential of the scalar field has been
reconstructed which describes the modified variable Chaplygin gas. The
stability of the ho... | [
{
"created": "Thu, 17 Jun 2010 10:59:06 GMT",
"version": "v1"
}
] | 2010-06-18 | [
[
"Paul",
"B. C.",
"",
"North Bengal University"
]
] | In this letter we consider a correspondence between holographic dark energy and variable modified Chaplygin gas to obtain a holographic dark energy model of the universe. The corresponding potential of the scalar field has been reconstructed which describes the modified variable Chaplygin gas. The stability of the holo... |
2203.07125 | Alfredo D. Miravet | Alfredo D. Miravet and Antonio L. Maroto | Vector dark radiation and gravitational-wave polarization | 15 pages, 8 figures. Matches version published in JCAP | null | 10.1088/1475-7516/2022/09/014 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider conformal vector models which could play the role of a
cosmological dark radiation component. We analyse the propagation of
gravitational waves in the presence of this vector background and find a
suppression in the tensor transfer function at large scales. We also find that
although the cosmological back... | [
{
"created": "Mon, 14 Mar 2022 14:19:25 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Sep 2022 09:27:16 GMT",
"version": "v2"
}
] | 2022-09-14 | [
[
"Miravet",
"Alfredo D.",
""
],
[
"Maroto",
"Antonio L.",
""
]
] | We consider conformal vector models which could play the role of a cosmological dark radiation component. We analyse the propagation of gravitational waves in the presence of this vector background and find a suppression in the tensor transfer function at large scales. We also find that although the cosmological backgr... |
1105.1172 | Miguel Pino Rozas | M\'aximo Ba\~nados, Andr\'es Gomberoff, Miguel Pino | The bigravity black hole and its thermodynamics | 14 pages, 9 figures | null | 10.1103/PhysRevD.84.104028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We argue that the Isham-Storey exact solution to bigravity does not describe
black holes because the horizon is a singular surface. However, this is not a
generic property of bigravity, but a property of a particular potential. More
general potentials do accept regular black holes. For regular black holes, we
compute... | [
{
"created": "Thu, 5 May 2011 20:58:40 GMT",
"version": "v1"
},
{
"created": "Tue, 17 May 2011 19:09:02 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Oct 2011 21:03:27 GMT",
"version": "v3"
}
] | 2015-03-19 | [
[
"Bañados",
"Máximo",
""
],
[
"Gomberoff",
"Andrés",
""
],
[
"Pino",
"Miguel",
""
]
] | We argue that the Isham-Storey exact solution to bigravity does not describe black holes because the horizon is a singular surface. However, this is not a generic property of bigravity, but a property of a particular potential. More general potentials do accept regular black holes. For regular black holes, we compute t... |
2306.14273 | Dhruba Jyoti Gogoi Dr. | Dhruba Jyoti Gogoi, Jyatsnasree Bora, M. Koussour and Yassine Sekhmani | Quasinormal Modes and Optical Properties of 4-D black holes in Einstein
Power-Yang-Mills Gravity | 13 pages, 9 figures | Annals of Physics 458, 169447 (2023) | 10.1016/j.aop.2023.169447 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | This paper explores the impact of the Yang-Mills charge parameter and the
exponent term on a $4$D black hole solution in the Einstein Power-Yang-Mills
theory. Through an investigation of the massless scalar quasinormal mode
spectrum, black hole shadow, and emission rate, we have determined that the
effects of these t... | [
{
"created": "Sun, 25 Jun 2023 15:49:27 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Sep 2023 18:16:16 GMT",
"version": "v2"
}
] | 2023-09-06 | [
[
"Gogoi",
"Dhruba Jyoti",
""
],
[
"Bora",
"Jyatsnasree",
""
],
[
"Koussour",
"M.",
""
],
[
"Sekhmani",
"Yassine",
""
]
] | This paper explores the impact of the Yang-Mills charge parameter and the exponent term on a $4$D black hole solution in the Einstein Power-Yang-Mills theory. Through an investigation of the massless scalar quasinormal mode spectrum, black hole shadow, and emission rate, we have determined that the effects of these two... |
2408.06915 | Allan Alinea | Allan L. Alinea and Joshwa DJ. Ordonez | On the KG-constrained Bekenstein's disformal transformation of the
Einstein-Hilbert action | 12 pages | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Motivated by an inclination for symmetry and possible extension of the
General Theory of Relativity within the framework of Scalar Theory, we
investigate the Bekenstein's disformal transformation of the Einstein-Hilbert
action. Owing to the complicated combinations of second order metric
derivatives encoded in the Ri... | [
{
"created": "Tue, 13 Aug 2024 14:06:56 GMT",
"version": "v1"
}
] | 2024-08-14 | [
[
"Alinea",
"Allan L.",
""
],
[
"Ordonez",
"Joshwa DJ.",
""
]
] | Motivated by an inclination for symmetry and possible extension of the General Theory of Relativity within the framework of Scalar Theory, we investigate the Bekenstein's disformal transformation of the Einstein-Hilbert action. Owing to the complicated combinations of second order metric derivatives encoded in the Ricc... |
1703.05295 | Christian Corda Prof. | Germano Resconi, Ignazio Licata and Christian Corda | Gravity with torsion in non-conservative Maxwell-like gauge approach | 13 pages, accepted for publication in International Journal of
Geometric Methods in Modern Physics | Int. J. Geom. Methods Mod. Phys. 14, 1750110 (2017) | 10.1142/S0219887817501109 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we take into consideration a generalization of Gauge Theories
based on the analysis of the structural characteristics of Maxwell theory,
which can be considered as the prototype of such kind of theories
(Maxwell-like). Such class of theories is based on few principles related to
different orders of commu... | [
{
"created": "Wed, 15 Mar 2017 17:53:46 GMT",
"version": "v1"
}
] | 2017-04-03 | [
[
"Resconi",
"Germano",
""
],
[
"Licata",
"Ignazio",
""
],
[
"Corda",
"Christian",
""
]
] | In this work we take into consideration a generalization of Gauge Theories based on the analysis of the structural characteristics of Maxwell theory, which can be considered as the prototype of such kind of theories (Maxwell-like). Such class of theories is based on few principles related to different orders of commuta... |
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