id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0002040 | Parthasarathi Majumdar | Romesh K. Kaul and Parthasarathi Majumdar | Logarithmic correction to the Bekenstein-Hawking entropy | 4 pages in Revtex format, one eps figure; version published in
Physical Review Letters | Phys.Rev.Lett.84:5255-5257,2000 | 10.1103/PhysRevLett.84.5255 | null | gr-qc hep-th | null | The exact formula derived by us earlier for the entropy of a four dimensional
non-rotating black hole within the quantum geometry formulation of the event
horizon in terms of boundary states of a three dimensional Chern-Simons theory,
is reexamined for large horizon areas. In addition to the {\it semiclassical}
Beken... | [
{
"created": "Thu, 10 Feb 2000 14:33:39 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Feb 2000 11:40:26 GMT",
"version": "v2"
},
{
"created": "Wed, 14 Jun 2000 14:21:37 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Kaul",
"Romesh K.",
""
],
[
"Majumdar",
"Parthasarathi",
""
]
] | The exact formula derived by us earlier for the entropy of a four dimensional non-rotating black hole within the quantum geometry formulation of the event horizon in terms of boundary states of a three dimensional Chern-Simons theory, is reexamined for large horizon areas. In addition to the {\it semiclassical} Bekenst... |
gr-qc/0508040 | A. Joel Saavedra | Joel Saavedra | Quasinormal modes of Unruh's Acoustic Black Hole | 5 Pages | Mod.Phys.Lett. A21 (2006) 1601-1608 | 10.1142/S0217732306019712 | null | gr-qc | null | We have studied the sound perturbation of Unruh's acoustic geometry and we
present an exact expression for the quasinormal modes of this geometry. We are
obtain that the quasinormal frequencies are pure-imaginary, that give a purely
damped modes.
| [
{
"created": "Wed, 10 Aug 2005 15:20:44 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Oct 2005 15:36:13 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Saavedra",
"Joel",
""
]
] | We have studied the sound perturbation of Unruh's acoustic geometry and we present an exact expression for the quasinormal modes of this geometry. We are obtain that the quasinormal frequencies are pure-imaginary, that give a purely damped modes. |
1409.7215 | John Veitch | John Veitch, Vivien Raymond, Benjamin Farr, Will M. Farr, Philip
Graff, Salvatore Vitale, Ben Aylott, Kent Blackburn, Nelson Christensen,
Michael Coughlin, Walter Del Pozzo, Farhan Feroz, Jonathan Gair, Carl-Johan
Haster, Vicky Kalogera, Tyson Littenberg, Ilya Mandel, Richard O'Shaughnessy,
Matthew Pitkin, Carl... | Robust parameter estimation for compact binaries with ground-based
gravitational-wave observations using the LALInference software library | null | Phys. Rev. D 91, 042003 (2015) | 10.1103/PhysRevD.91.042003 | LIGO P1400152 | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Advanced LIGO and Advanced Virgo gravitational wave (GW) detectors will
begin operation in the coming years, with compact binary coalescence events a
likely source for the first detections. The gravitational waveforms emitted
directly encode information about the sources, including the masses and spins
of the com... | [
{
"created": "Thu, 25 Sep 2014 11:24:49 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Feb 2015 13:02:49 GMT",
"version": "v2"
}
] | 2015-02-17 | [
[
"Veitch",
"John",
""
],
[
"Raymond",
"Vivien",
""
],
[
"Farr",
"Benjamin",
""
],
[
"Farr",
"Will M.",
""
],
[
"Graff",
"Philip",
""
],
[
"Vitale",
"Salvatore",
""
],
[
"Aylott",
"Ben",
""
],
[
"Blac... | The Advanced LIGO and Advanced Virgo gravitational wave (GW) detectors will begin operation in the coming years, with compact binary coalescence events a likely source for the first detections. The gravitational waveforms emitted directly encode information about the sources, including the masses and spins of the compa... |
gr-qc/9807026 | Abel Camacho Quinatan | A. Camacho | The role of the quantum properties of gravitational radiation in the
dete ction of gravitational waves | 19 pages, Latex (use epsfig.sty) | Int.J.Mod.Phys. A14 (1999) 1997-2012 | 10.1142/S0217751X99001007 | null | gr-qc | null | The role that the quantum properties of a gravitational wave could play in
the detection of gravitational radiation is analyzed. It is not only
corroborated that in the current laser-interferometric detectors the resolution
of the experimental apparatus could lie very far from the corresponding quantum
threshold (thu... | [
{
"created": "Fri, 10 Jul 1998 21:14:04 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Camacho",
"A.",
""
]
] | The role that the quantum properties of a gravitational wave could play in the detection of gravitational radiation is analyzed. It is not only corroborated that in the current laser-interferometric detectors the resolution of the experimental apparatus could lie very far from the corresponding quantum threshold (thus ... |
2308.12979 | Xavier Kervyn | Xavier Kervyn | BMS Symmetries of Gravitational Scattering | 63 pages, 9 figures. Essay submitted for the partial fulfillment of
the requirements for the degree of Master of Advanced Study in Applied
Mathematics at the University of Cambridge, aimed at students willing to
learn about the role of asymptotic symmetries in the context of flat space
holography, with only bas... | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | After motivating the relevance of the Bondi-Metzner-Sachs (BMS) group over
the last decades, we review how concepts such as Penrose diagrams and the
covariant phase space formalism can be used to understand the asymptotic
structure of asymptotically flat spacetimes (AFS). We then explicitly construct
the asymptotic s... | [
{
"created": "Wed, 23 Aug 2023 08:19:58 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Sep 2023 10:13:57 GMT",
"version": "v2"
}
] | 2023-09-06 | [
[
"Kervyn",
"Xavier",
""
]
] | After motivating the relevance of the Bondi-Metzner-Sachs (BMS) group over the last decades, we review how concepts such as Penrose diagrams and the covariant phase space formalism can be used to understand the asymptotic structure of asymptotically flat spacetimes (AFS). We then explicitly construct the asymptotic sym... |
2106.06671 | Jia-An Lu | Jia-An Lu | Cosmology of a polynomial model for de Sitter gauge theory sourced by a
fluid | 13 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the de Sitter gauge theory (DGT), the fundamental variables are the de
Sitter (dS) connection and the gravitational Higgs/Goldstone field $\xi^A$.
Previously, a model for DGT was analyzed, which generalizes the
MacDowell--Mansouri gravity to have a variable cosmological constant
$\Lambda=3/l^2$, where $l$ is relat... | [
{
"created": "Sat, 12 Jun 2021 02:52:18 GMT",
"version": "v1"
}
] | 2021-06-15 | [
[
"Lu",
"Jia-An",
""
]
] | In the de Sitter gauge theory (DGT), the fundamental variables are the de Sitter (dS) connection and the gravitational Higgs/Goldstone field $\xi^A$. Previously, a model for DGT was analyzed, which generalizes the MacDowell--Mansouri gravity to have a variable cosmological constant $\Lambda=3/l^2$, where $l$ is related... |
1101.3331 | Leor Barack | Leor Barack and Norichika Sago | Beyond the geodesic approximation: conservative effects of the
gravitational self-force in eccentric orbits around a Schwarzschild black
hole | 29 pages, 4 eps figures, matches PRD version | Phys.Rev.D83:084023,2011 | 10.1103/PhysRevD.83.084023 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study conservative finite-mass corrections to the motion of a particle in
a bound (eccentric) strong-field orbit around a Schwarzschild black hole. We
assume the particle's mass $\mu$ is much smaller than the black hole mass $M$,
and explore post-geodesic corrections of $O(\mu/M)$. Our analysis uses
numerical data... | [
{
"created": "Mon, 17 Jan 2011 21:08:50 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Mar 2011 18:56:44 GMT",
"version": "v2"
}
] | 2015-03-17 | [
[
"Barack",
"Leor",
""
],
[
"Sago",
"Norichika",
""
]
] | We study conservative finite-mass corrections to the motion of a particle in a bound (eccentric) strong-field orbit around a Schwarzschild black hole. We assume the particle's mass $\mu$ is much smaller than the black hole mass $M$, and explore post-geodesic corrections of $O(\mu/M)$. Our analysis uses numerical data f... |
2103.08372 | Jibitesh Dutta | Wompherdeiki Khyllep, Andronikos Paliathanasis and Jibitesh Dutta | Cosmological solutions and growth index of matter perturbations in
$f(Q)$ gravity | 17 pages and 7 figs | Phys. Rev. D 103, 103521 (2021) | 10.1103/PhysRevD.103.103521 | null | gr-qc hep-ph nlin.CD | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present work studies one of Einstein's alternative formulations based on
the non-metricity scalar $Q$ generalized as $f(Q)$ theory. More specifically,
we consider the power-law form of $f(Q)$ gravity i.e. $f(Q)=Q+\alpha\, Q^n$.
Here, we analyze the behavior of the cosmological model at the background and
perturba... | [
{
"created": "Mon, 15 Mar 2021 13:21:57 GMT",
"version": "v1"
},
{
"created": "Tue, 18 May 2021 16:05:57 GMT",
"version": "v2"
}
] | 2021-05-26 | [
[
"Khyllep",
"Wompherdeiki",
""
],
[
"Paliathanasis",
"Andronikos",
""
],
[
"Dutta",
"Jibitesh",
""
]
] | The present work studies one of Einstein's alternative formulations based on the non-metricity scalar $Q$ generalized as $f(Q)$ theory. More specifically, we consider the power-law form of $f(Q)$ gravity i.e. $f(Q)=Q+\alpha\, Q^n$. Here, we analyze the behavior of the cosmological model at the background and perturbati... |
0912.4832 | Jiliang Jing | Mengjie Wang, Jiliang Jing, Chikun Ding, Songbai Chen | First laws of thermodynamics in IR Modified H\v{o}rava-Lifshitz gravity | 11 pages | Phys.Rev.D81:083006,2010 | 10.1103/PhysRevD.81.083006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the first law of thermodynamics in IR modified H\v{o}rava-Lifshitz
spacetime. Based on the Bekenstein-Hawking entropy, we obtain the integral
formula and the differential formula of the first law of thermodynamics for the
Kehagias-Sfetsos black hole by treating $\omega$ as a new state parameter and
redefinin... | [
{
"created": "Thu, 24 Dec 2009 11:10:21 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Apr 2010 03:08:59 GMT",
"version": "v2"
}
] | 2010-05-12 | [
[
"Wang",
"Mengjie",
""
],
[
"Jing",
"Jiliang",
""
],
[
"Ding",
"Chikun",
""
],
[
"Chen",
"Songbai",
""
]
] | We study the first law of thermodynamics in IR modified H\v{o}rava-Lifshitz spacetime. Based on the Bekenstein-Hawking entropy, we obtain the integral formula and the differential formula of the first law of thermodynamics for the Kehagias-Sfetsos black hole by treating $\omega$ as a new state parameter and redefining ... |
gr-qc/9907090 | Shinji Mukohyama | Shinji Mukohyama | Entanglement/Brick-wall entropies correspondence | Latex, 5 pages; talk in the 8th Canadian Conference on General
Relativity and Relativistic Astrophysics | null | null | null | gr-qc | null | There have been many attempts to understand the statistical origin of
black-hole entropy. Among them, entanglement entropy and the brick wall model
are strong candidates. In this paper we show a relation between entanglement
entropy and the brick wall model: the brick wall model seeks the maximal value
of the entangl... | [
{
"created": "Tue, 27 Jul 1999 19:19:51 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mukohyama",
"Shinji",
""
]
] | There have been many attempts to understand the statistical origin of black-hole entropy. Among them, entanglement entropy and the brick wall model are strong candidates. In this paper we show a relation between entanglement entropy and the brick wall model: the brick wall model seeks the maximal value of the entanglem... |
1602.03523 | Mustapha Azreg-A\"inou | Ayyesha K. Ahmed, Mustapha Azreg-A\"inou (C. Author), Sebastian
Bahamonde, Salvatore Capozziello, and Mubasher Jamil | Astrophysical flows near $f(T)$ gravity black holes | 13 pages, 7 figures. Extended version includes solutions on
polytropic fluids. To appear in EPJC | Eur. Phys. J. C (2016) 76:269 | 10.1140/epjc/s10052-016-4118-5 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the accretion process for fluids flowing near a black
hole in the context of $f(T)$ teleparallel gravity. Specifically, by performing
a dynamical analysis by a Hamiltonian system, we are able to find the sonic
points. After that, we consider different isothermal test fluids in order to
study t... | [
{
"created": "Wed, 10 Feb 2016 17:20:38 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Apr 2016 10:02:35 GMT",
"version": "v2"
}
] | 2016-05-20 | [
[
"Ahmed",
"Ayyesha K.",
"",
"C. Author"
],
[
"Azreg-Aïnou",
"Mustapha",
"",
"C. Author"
],
[
"Bahamonde",
"Sebastian",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"Jamil",
"Mubasher",
""
]
] | In this paper, we study the accretion process for fluids flowing near a black hole in the context of $f(T)$ teleparallel gravity. Specifically, by performing a dynamical analysis by a Hamiltonian system, we are able to find the sonic points. After that, we consider different isothermal test fluids in order to study the... |
2108.13768 | Takafumi Kokubu | Takafumi Kokubu, Shou-Long Li, Puxun Wu, Hongwei Yu | Confined Penrose process with charged particles | 16 pages, 5 figures, typo corrected, miscalculation fixed, version
accepted for PRD | PhysRevD.104.104047 (2021) | 10.1103/PhysRevD.104.104047 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We show that kinematics of charged particles allows us to model the growth of
particles' energy by consecutive particle-splits, once a spherical mirror as a
perfectly reflective boundary is placed outside a charged black hole. We
consider a charged version of the Penrose process, in which a charged particle
decays in... | [
{
"created": "Tue, 31 Aug 2021 11:41:42 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Nov 2021 05:19:43 GMT",
"version": "v2"
}
] | 2021-11-25 | [
[
"Kokubu",
"Takafumi",
""
],
[
"Li",
"Shou-Long",
""
],
[
"Wu",
"Puxun",
""
],
[
"Yu",
"Hongwei",
""
]
] | We show that kinematics of charged particles allows us to model the growth of particles' energy by consecutive particle-splits, once a spherical mirror as a perfectly reflective boundary is placed outside a charged black hole. We consider a charged version of the Penrose process, in which a charged particle decays into... |
gr-qc/0703079 | Alexander Kaganovich B. | E. I. Guendelman and A. B. Kaganovich | Initial Singularity, Lambda-Problem and Crossing the Phantom Divide in
Scale Invariant TMT Model | 12 pages, 3 figures, presented to Proceedings of the IV Summer School
in Modern Mathematical Physics, 3-14 September 2006, Belgrade, Serbia | null | null | null | gr-qc astro-ph hep-th | null | In the framework of the scale invariant model of the Two Measures Field
Theory (TMT), we study the dilaton-gravity sector in the context of spatially
flat FRW cosmology. The scale invariance is spontaneously broken due to the
intrinsic features of the TMT dynamics. If no fine tuning is made, the
effective $\phi$-Lagr... | [
{
"created": "Wed, 14 Mar 2007 13:24:00 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Guendelman",
"E. I.",
""
],
[
"Kaganovich",
"A. B.",
""
]
] | In the framework of the scale invariant model of the Two Measures Field Theory (TMT), we study the dilaton-gravity sector in the context of spatially flat FRW cosmology. The scale invariance is spontaneously broken due to the intrinsic features of the TMT dynamics. If no fine tuning is made, the effective $\phi$-Lagran... |
2107.02938 | Aram Saharian | A. A. Saharian, A. V. Timoshkin | The Holographic cosmology with axion field | 13 pages, 2 figures, to appear in International Journal of Geometric
Methods in Modern Physics | null | 10.1142/S0219887821501747 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | In present article we consider an axion F(R) gravity model and described with
the help of holographic principle the cosmological models of viscous dark fluid
coupled with axion matter in a spatially flat Friedmann-Robertson-Walker (FRW)
universe. This description based on generalized infrared-cutoff holographic
dark ... | [
{
"created": "Mon, 5 Jul 2021 08:28:03 GMT",
"version": "v1"
}
] | 2021-09-29 | [
[
"Saharian",
"A. A.",
""
],
[
"Timoshkin",
"A. V.",
""
]
] | In present article we consider an axion F(R) gravity model and described with the help of holographic principle the cosmological models of viscous dark fluid coupled with axion matter in a spatially flat Friedmann-Robertson-Walker (FRW) universe. This description based on generalized infrared-cutoff holographic dark en... |
1605.06022 | T. P. Singh | Shreya Banerjee, Sayantani Bera and T. P. Singh | Quantum nonlocality, and the end of classical space-time | 6 pages. Honorable mention in GRF Essay Contest 2016 | null | 10.1142/S0218271816440053 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum non-local correlations and the acausal, spooky action at a distance
suggest a discord between quantum theory and special relativity. We propose a
resolution for this discord by first observing that there is a problem of time
in quantum theory. There should exist a reformulation of quantum theory which
does no... | [
{
"created": "Fri, 13 May 2016 18:16:06 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Banerjee",
"Shreya",
""
],
[
"Bera",
"Sayantani",
""
],
[
"Singh",
"T. P.",
""
]
] | Quantum non-local correlations and the acausal, spooky action at a distance suggest a discord between quantum theory and special relativity. We propose a resolution for this discord by first observing that there is a problem of time in quantum theory. There should exist a reformulation of quantum theory which does not ... |
1503.02414 | Abhay Shah | Abhay G. Shah, Adam Pound | Linear-in-mass-ratio contribution to spin precession and tidal
invariants in Schwarzschild spacetime at very high post-Newtonian order | null | Phys. Rev. D 91, 124022 (2015) | 10.1103/PhysRevD.91.124022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using black hole perturbation theory and arbitrary-precision computer
algebra, we obtain the post-Newtonian (pN) expansions of the
linear-in-mass-ratio corrections to the spin-precession angle and tidal
invariants for a particle in circular orbit around a Schwarzschild black hole.
We extract coefficients up to 20pN o... | [
{
"created": "Mon, 9 Mar 2015 10:05:46 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Apr 2015 15:55:31 GMT",
"version": "v2"
}
] | 2015-06-17 | [
[
"Shah",
"Abhay G.",
""
],
[
"Pound",
"Adam",
""
]
] | Using black hole perturbation theory and arbitrary-precision computer algebra, we obtain the post-Newtonian (pN) expansions of the linear-in-mass-ratio corrections to the spin-precession angle and tidal invariants for a particle in circular orbit around a Schwarzschild black hole. We extract coefficients up to 20pN ord... |
2106.09731 | Sam Dolan Dr | Mohamed Ould El Hadj and Sam R. Dolan | Conversion of electromagnetic and gravitational waves by a charged black
hole | 20 pages, 7 figures. Added a proof that the angle for half-conversion
is 90 degrees in the extremal case Q=M | Phys. Rev. D 106, 044002 (2022) | 10.1103/PhysRevD.106.044002 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a strong electromagnetic field, gravitational waves are converted into
electromagnetic waves of the same frequency, and vice versa. Here we calculate
the scattering and conversion cross sections for a planar wave impinging upon a
Reissner-Nordstr\"om black hole in vacuum, using the partial-wave expansion and
numer... | [
{
"created": "Thu, 17 Jun 2021 18:00:02 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Jul 2021 20:22:34 GMT",
"version": "v2"
}
] | 2022-08-03 | [
[
"Hadj",
"Mohamed Ould El",
""
],
[
"Dolan",
"Sam R.",
""
]
] | In a strong electromagnetic field, gravitational waves are converted into electromagnetic waves of the same frequency, and vice versa. Here we calculate the scattering and conversion cross sections for a planar wave impinging upon a Reissner-Nordstr\"om black hole in vacuum, using the partial-wave expansion and numeric... |
2201.03596 | Steffen Gielen | Steffen Gielen, Jo\~ao Magueijo | Quantum analysis of the recent cosmological bounce in the comoving
Hubble length | 15 pages, 13 figures; v3: very minor changes in presentation (mostly
typographical), close to version published in Phys.Rev.D | Phys. Rev. D 107 (2023), 023518 | 10.1103/PhysRevD.107.023518 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We formulate the transition from decelerated to accelerated expansion as a
bounce in connection space and study its quantum cosmology, knowing that
reflections are notorious for bringing quantum effects to the fore. We use a
formalism for obtaining a time variable via the demotion of the constants of
Nature to integr... | [
{
"created": "Mon, 10 Jan 2022 19:03:55 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Dec 2022 15:38:04 GMT",
"version": "v2"
},
{
"created": "Thu, 12 Jan 2023 11:06:22 GMT",
"version": "v3"
}
] | 2023-01-18 | [
[
"Gielen",
"Steffen",
""
],
[
"Magueijo",
"João",
""
]
] | We formulate the transition from decelerated to accelerated expansion as a bounce in connection space and study its quantum cosmology, knowing that reflections are notorious for bringing quantum effects to the fore. We use a formalism for obtaining a time variable via the demotion of the constants of Nature to integrat... |
gr-qc/0010059 | Cheng Jian-Feng | Jian-Feng Cheng, Xin-Bing Huang | The Geometrical Generating of Gravity | the author considered it unmatured and withdraw it | null | null | null | gr-qc | null | the author considered it unmatured and withdraw it.
| [
{
"created": "Mon, 16 Oct 2000 04:03:15 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Sep 2002 08:08:14 GMT",
"version": "v2"
},
{
"created": "Mon, 22 Aug 2011 12:01:16 GMT",
"version": "v3"
}
] | 2011-08-23 | [
[
"Cheng",
"Jian-Feng",
""
],
[
"Huang",
"Xin-Bing",
""
]
] | the author considered it unmatured and withdraw it. |
gr-qc/9609043 | Juan Perez-Mercader | David Hochberg and Juan P\'erez-Mercader | A Liquid Model Analogue for Black Hole Thermodynamics | 20 pages and 6 Encapsulated PostScript figures | Phys.Rev. D55 (1997) 4880-4888 | 10.1103/PhysRevD.55.4880 | LAEFF-96/21 | gr-qc | null | We are able to characterize a 2--dimensional classical fluid sharing some of
the same thermodynamic state functions as the Schwarzschild black hole. This
phenomenological correspondence between black holes and fluids is established
by means of the model liquid's pair-correlation function and the two-body
atomic inter... | [
{
"created": "Mon, 16 Sep 1996 15:15:50 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Hochberg",
"David",
""
],
[
"Pérez-Mercader",
"Juan",
""
]
] | We are able to characterize a 2--dimensional classical fluid sharing some of the same thermodynamic state functions as the Schwarzschild black hole. This phenomenological correspondence between black holes and fluids is established by means of the model liquid's pair-correlation function and the two-body atomic interac... |
gr-qc/0009099 | Andrei A. Galiautdinov | David R. Finkelstein, Andrei A. Galiautdinov, and James E. Baugh | Unimodular relativity and cosmological constant | 7 pages, no figures. To appear in the Journal of Mathematical Physics | J.Math.Phys. 42 (2001) 340-346 | 10.1063/1.1328077 | null | gr-qc | null | Unimodular relativity is a theory of gravity and space-time with a fixed
absolute space-time volume element, the modulus, which we suppose is
proportional to the number of microscopic modules in that volume element. In
general relativity an arbitrary fixed measure can be imposed as a gauge
condition, while in unimodu... | [
{
"created": "Thu, 28 Sep 2000 19:17:31 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Finkelstein",
"David R.",
""
],
[
"Galiautdinov",
"Andrei A.",
""
],
[
"Baugh",
"James E.",
""
]
] | Unimodular relativity is a theory of gravity and space-time with a fixed absolute space-time volume element, the modulus, which we suppose is proportional to the number of microscopic modules in that volume element. In general relativity an arbitrary fixed measure can be imposed as a gauge condition, while in unimodula... |
2103.13750 | Fabiano Feleppa | Fabrizio Tamburini, Fabiano Feleppa and Bo Thid\'e | Constraining the Generalized Uncertainty Principle with the light
twisted by rotating black holes and M87* | 5 pages, 2 figures. v2: typos corrected | Phys. Lett. B, 826 (2022) | 10.1016/j.physletb.2022.136894 | null | gr-qc astro-ph.HE quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We test the validity of the Generalized Heisenberg's Uncertainty principle in
the presence of strong gravitational fields nearby rotating black holes;
Heisenberg's principle is supposed to require additional correction terms when
gravity is taken into account, leading to a more general formulation also known
as the G... | [
{
"created": "Thu, 25 Mar 2021 11:06:55 GMT",
"version": "v1"
},
{
"created": "Sun, 27 Mar 2022 21:41:29 GMT",
"version": "v2"
}
] | 2022-03-29 | [
[
"Tamburini",
"Fabrizio",
""
],
[
"Feleppa",
"Fabiano",
""
],
[
"Thidé",
"Bo",
""
]
] | We test the validity of the Generalized Heisenberg's Uncertainty principle in the presence of strong gravitational fields nearby rotating black holes; Heisenberg's principle is supposed to require additional correction terms when gravity is taken into account, leading to a more general formulation also known as the Gen... |
1808.06195 | Assaf Lanir | Assaf Lanir, Adam Levi, Amos Ori | Mode-sum renormalization of $\langle\Phi^{2}\rangle$ for a quantum
scalar field inside a Schwarzschild black hole | 14 pages, 6 figures | Phys. Rev. D 98, 084017 (2018) | 10.1103/PhysRevD.98.084017 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The full computation of the renormalized expectation values
$\langle\Phi^{2}\rangle_{ren}$ and $\langle\hat{T}_{\mu\nu}\rangle_{ren}$ in 4D
black hole interiors has been a long standing challenge, which has impeded the
investigation of quantum effects on the internal structure of black holes for
decades. Employing a ... | [
{
"created": "Sun, 19 Aug 2018 10:58:40 GMT",
"version": "v1"
}
] | 2018-10-16 | [
[
"Lanir",
"Assaf",
""
],
[
"Levi",
"Adam",
""
],
[
"Ori",
"Amos",
""
]
] | The full computation of the renormalized expectation values $\langle\Phi^{2}\rangle_{ren}$ and $\langle\hat{T}_{\mu\nu}\rangle_{ren}$ in 4D black hole interiors has been a long standing challenge, which has impeded the investigation of quantum effects on the internal structure of black holes for decades. Employing a re... |
1411.1302 | Igor Khavkine | Igor Khavkine, Valter Moretti | Analytic Dependence is an Unnecessary Requirement in Renormalization of
Locally Covariant QFT | v3: 44 pages; expanded Discussion; close to published version | Commun. Math. Phys. 344 (2016), 581-620 | 10.1007/s00220-016-2618-7 | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | Finite renormalization freedom in locally covariant quantum field theories on
curved spacetime is known to be tightly constrained, under certain standard
hypotheses, to the same terms as in flat spacetime up to finitely many
curvature dependent terms. These hypotheses include, in particular, locality,
covariance, sca... | [
{
"created": "Wed, 5 Nov 2014 15:50:01 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Jun 2015 09:36:46 GMT",
"version": "v2"
},
{
"created": "Wed, 30 Mar 2016 16:19:14 GMT",
"version": "v3"
}
] | 2016-05-16 | [
[
"Khavkine",
"Igor",
""
],
[
"Moretti",
"Valter",
""
]
] | Finite renormalization freedom in locally covariant quantum field theories on curved spacetime is known to be tightly constrained, under certain standard hypotheses, to the same terms as in flat spacetime up to finitely many curvature dependent terms. These hypotheses include, in particular, locality, covariance, scali... |
gr-qc/9510060 | Mehrdad Farhoudi Dr. | M. Farhoudi | Lovelock Tensor as Generalized Einstein Tensor | 16 pages, added refs., corrected a mistyped eq. (the last one in
p12), TeX file (using phyzzx.tex) | Gen.Rel.Grav.41:117-129,2009 | 10.1007/s10714-008-0658-9 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the splitting feature of the Einstein tensor, as the first term
of the Lovelock tensor, into two parts, namely the Ricci tensor and the term
proportional to the curvature scalar, with the trace relation between them is a
common feature of any other homogeneous terms in the Lovelock tensor. Motivated
by t... | [
{
"created": "Fri, 27 Oct 1995 20:51:57 GMT",
"version": "v1"
},
{
"created": "Sun, 29 Oct 1995 12:54:45 GMT",
"version": "v2"
},
{
"created": "Tue, 31 Oct 1995 22:35:17 GMT",
"version": "v3"
},
{
"created": "Fri, 13 Nov 2009 09:50:51 GMT",
"version": "v4"
},
{
"c... | 2011-07-07 | [
[
"Farhoudi",
"M.",
""
]
] | We show that the splitting feature of the Einstein tensor, as the first term of the Lovelock tensor, into two parts, namely the Ricci tensor and the term proportional to the curvature scalar, with the trace relation between them is a common feature of any other homogeneous terms in the Lovelock tensor. Motivated by the... |
1111.3232 | Emanuel Gallo | Emanuel Gallo | Higher dimensional conformal metrics from PDEs and Null Surface
Formulation of GR | 20 pages. Some clarifications and a new appendix added. To be
published in Class. Quantum Grav | Class. Quantum Grav. 29 (2012) 145004 | 10.1088/0264-9381/29/14/145004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the relationship between $n$-dimensional conformal metrics and a
certain class of partial differential equations (PDEs) that are in duality with
the eikonal equation. In particular, we extend the Null Surface Formulation of
General Relativity to higher dimensions and give explicit expressions for the
compo... | [
{
"created": "Mon, 14 Nov 2011 14:50:03 GMT",
"version": "v1"
},
{
"created": "Thu, 31 May 2012 15:20:59 GMT",
"version": "v2"
}
] | 2012-06-08 | [
[
"Gallo",
"Emanuel",
""
]
] | We analyze the relationship between $n$-dimensional conformal metrics and a certain class of partial differential equations (PDEs) that are in duality with the eikonal equation. In particular, we extend the Null Surface Formulation of General Relativity to higher dimensions and give explicit expressions for the compone... |
gr-qc/9904003 | David I. Santiago | David I. Santiago, Alexander S. Silbergleit | On the Energy-Momentum Tensor of the Scalar Field in Scalar--Tensor
Theories of Gravity | Submitted to Phys. Rev D15, 10 pages. Uses ReVTeX macros | Gen.Rel.Grav. 32 (2000) 565-581 | 10.1023/A:1001902715613 | null | gr-qc | null | We study the dynamical description of gravity, the appropriate definition of
the scalar field energy-momentum tensor, and the interrelation between them in
scalar-tensor theories of gravity. We show that the quantity which one would
naively identify as the energy-momentum tensor of the scalar field is not
appropriate... | [
{
"created": "Fri, 2 Apr 1999 01:59:11 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Santiago",
"David I.",
""
],
[
"Silbergleit",
"Alexander S.",
""
]
] | We study the dynamical description of gravity, the appropriate definition of the scalar field energy-momentum tensor, and the interrelation between them in scalar-tensor theories of gravity. We show that the quantity which one would naively identify as the energy-momentum tensor of the scalar field is not appropriate b... |
gr-qc/0303061 | Abel Camacho | Abel Camacho (Dept. of Physics, Universidad Autonoma Metropolitana) | Generalized Uncertainty Principle and Quantum Electrodynamics | Acceptted in General Relativity and Gravitation | Gen.Rel.Grav. 35 (2003) 1153-1160 | 10.1023/A:1024437522212 | null | gr-qc quant-ph | null | In the present work the role that a generalized uncertainty principle could
play in the quantization of the electromagnetic field is analyzed. It will be
shown that we may speak of a Fock space, a result that implies that the concept
of photon is properly defined. Nevertheless, in this new context the creation
and an... | [
{
"created": "Mon, 17 Mar 2003 15:56:56 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Camacho",
"Abel",
"",
"Dept. of Physics, Universidad Autonoma Metropolitana"
]
] | In the present work the role that a generalized uncertainty principle could play in the quantization of the electromagnetic field is analyzed. It will be shown that we may speak of a Fock space, a result that implies that the concept of photon is properly defined. Nevertheless, in this new context the creation and anni... |
gr-qc/9508053 | Masahiro Hotta | T.Futamase (Tohoku Univ.), M.Hotta (Tohoku Univ.), H.Inoue (Tohoku
Univ.), M.Yamaguchi (Tohoku Univ. and Technische Universit\"at M\"unchen) | Geometric Bremsstrahlung in the Early Universe | 20 pages, No figures | Prog.Theor.Phys. 96 (1996) 113-124 | 10.1143/PTP.96.113 | TU-490 REVISED | gr-qc | null | We discuss photon emission from particles decelerlated by the cosmic
expansion. This can be interpretated as a kind of bremsstrahlung induced by the
Universe geometry. In the high momentum limit its transition probability does
not depend on detailed behavior of the expansion.
| [
{
"created": "Mon, 28 Aug 1995 01:24:46 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Mar 1996 06:26:08 GMT",
"version": "v2"
},
{
"created": "Wed, 12 Jun 1996 07:20:31 GMT",
"version": "v3"
}
] | 2016-08-15 | [
[
"Futamase",
"T.",
"",
"Tohoku Univ."
],
[
"Hotta",
"M.",
"",
"Tohoku Univ."
],
[
"Inoue",
"H.",
"",
"Tohoku\n Univ."
],
[
"Yamaguchi",
"M.",
"",
"Tohoku Univ. and Technische Universität München"
]
] | We discuss photon emission from particles decelerlated by the cosmic expansion. This can be interpretated as a kind of bremsstrahlung induced by the Universe geometry. In the high momentum limit its transition probability does not depend on detailed behavior of the expansion. |
gr-qc/0509107 | Gregory J. Galloway | Gregory J. Galloway and Richard Schoen | A generalization of Hawking's black hole topology theorem to higher
dimensions | 8 pages, latex2e, references updated, minor corrections, to appear in
Communications in Mathematical Physics | Commun.Math.Phys. 266 (2006) 571-576 | 10.1007/s00220-006-0019-z | null | gr-qc hep-th math.DG | null | Hawking's theorem on the topology of black holes asserts that cross sections
of the event horizon in 4-dimensional asymptotically flat stationary black hole
spacetimes obeying the dominant energy condition are topologically 2-spheres.
This conclusion extends to outer apparent horizons in spacetimes that are not
neces... | [
{
"created": "Tue, 27 Sep 2005 17:40:36 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Nov 2005 13:07:40 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Galloway",
"Gregory J.",
""
],
[
"Schoen",
"Richard",
""
]
] | Hawking's theorem on the topology of black holes asserts that cross sections of the event horizon in 4-dimensional asymptotically flat stationary black hole spacetimes obeying the dominant energy condition are topologically 2-spheres. This conclusion extends to outer apparent horizons in spacetimes that are not necessa... |
2204.06883 | Orfeu Bertolami | Orfeu Bertolami, Maria Margarida Lima, Filipe C. Mena | Primordial magnetic fields in theories of gravity with non-minimal
coupling between curvature and matter | 12 pages; corrections in section 3; conclusions unchanged | null | 10.1007/s10714-022-02968-7 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | The existence of magnetic fields in the universe is unmistakable. They are
observed at all scales from stars to galaxy clusters. However, the origin of
these fields remains enigmatic. It is believed that magnetic field seeds may
have emerged from inflation, under certain conditions. This possibility is
analised in th... | [
{
"created": "Thu, 14 Apr 2022 11:13:31 GMT",
"version": "v1"
},
{
"created": "Tue, 24 May 2022 18:26:29 GMT",
"version": "v2"
}
] | 2022-08-17 | [
[
"Bertolami",
"Orfeu",
""
],
[
"Lima",
"Maria Margarida",
""
],
[
"Mena",
"Filipe C.",
""
]
] | The existence of magnetic fields in the universe is unmistakable. They are observed at all scales from stars to galaxy clusters. However, the origin of these fields remains enigmatic. It is believed that magnetic field seeds may have emerged from inflation, under certain conditions. This possibility is analised in the ... |
gr-qc/0308067 | Christos G. Tsagas | John D. Barrow (DAMTP), Christos G. Tsagas (UCT/DAMTP) | Dynamics and stability of the Godel universe | Revised version, to match paper published in Class. Quantum Grav | Class.Quant.Grav.21:1773-1790,2004 | 10.1088/0264-9381/21/7/005 | null | gr-qc astro-ph | null | We use covariant techniques to describe the properties of the Godel universe
and then consider its linear response to a variety of perturbations. Against
matter aggregations, we find that the stability of the Godel model depends
primarily upon the presence of gradients in the centrifugal energy, and
secondarily on th... | [
{
"created": "Thu, 21 Aug 2003 14:33:14 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Mar 2004 17:12:10 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Barrow",
"John D.",
"",
"DAMTP"
],
[
"Tsagas",
"Christos G.",
"",
"UCT/DAMTP"
]
] | We use covariant techniques to describe the properties of the Godel universe and then consider its linear response to a variety of perturbations. Against matter aggregations, we find that the stability of the Godel model depends primarily upon the presence of gradients in the centrifugal energy, and secondarily on the ... |
gr-qc/9910107 | Ulrich H. Gerlach | Ulrich H. Gerlach | Acceleration-induced carrier of the imprints of gravitation | 3 pages, Latex. Based on the first of two talks given June 23-24,
1997, at the 8th Marcel Grossmann Meeting. Html version and related papers
available at http://www.math.ohio-state.edu/~gerlach | Proc. 8th Marcel Grossmann Meeting, edited by T. Piran (World
Scientific, Singapore, 1999), 806-808 | null | null | gr-qc | null | We exhibit a purely quantum mechanical carrier of the imprints of gravitation
by identifying for a relativistic charge a property which (i) is independent of
its mass and (ii) expresses the Poincare invariance of spacetime in the absence
of gravitation.
This carrier is a Klein-Gordon-equation-determined vector fiel... | [
{
"created": "Fri, 29 Oct 1999 15:47:37 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Gerlach",
"Ulrich H.",
""
]
] | We exhibit a purely quantum mechanical carrier of the imprints of gravitation by identifying for a relativistic charge a property which (i) is independent of its mass and (ii) expresses the Poincare invariance of spacetime in the absence of gravitation. This carrier is a Klein-Gordon-equation-determined vector field gi... |
2307.02589 | Adrien Druart | Adrien Druart | The Motion of Test Bodies around Kerr Black Holes | PhD Thesis | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | This thesis aims to explore the properties of the motion of finite size,
compact test bodies around a Kerr black hole in the small mass-ratio
approximation. The small body is modelled as a perturbation of Kerr geometry,
neglecting its gravitational back-reaction but including deviations from a
purely geodesic motion ... | [
{
"created": "Wed, 5 Jul 2023 18:36:04 GMT",
"version": "v1"
}
] | 2023-07-07 | [
[
"Druart",
"Adrien",
""
]
] | This thesis aims to explore the properties of the motion of finite size, compact test bodies around a Kerr black hole in the small mass-ratio approximation. The small body is modelled as a perturbation of Kerr geometry, neglecting its gravitational back-reaction but including deviations from a purely geodesic motion by... |
1907.02563 | Marcello Ortaggio | Alex Giacomini, Marcello Ortaggio | Extensions of the generalized hedgehog ansatz for the Einstein-nonlinear
$\sigma$-model system: black holes with NUT, black strings and time-dependent
solutions | 27 pages. v2: added 3 footnotes and brief comments, 2 new references | JHEP09(2019)090 | 10.1007/JHEP09(2019)090 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a class of ans\"atze for the construction of exact solutions of
the Einstein-nonlinear $\sigma$-model system with an arbitrary cosmological
constant in (3+1) dimensions. Exploiting a geometric interplay between the
$SU(2)$ field and Killing vectors of the spacetime reduces the matter field
equations to a ... | [
{
"created": "Thu, 4 Jul 2019 18:50:28 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Sep 2019 13:52:22 GMT",
"version": "v2"
}
] | 2019-09-17 | [
[
"Giacomini",
"Alex",
""
],
[
"Ortaggio",
"Marcello",
""
]
] | We consider a class of ans\"atze for the construction of exact solutions of the Einstein-nonlinear $\sigma$-model system with an arbitrary cosmological constant in (3+1) dimensions. Exploiting a geometric interplay between the $SU(2)$ field and Killing vectors of the spacetime reduces the matter field equations to a si... |
1504.00894 | Richard Woodard | D. Glavan (Utrecht University), S. P. Miao (National Cheng Kung
University), Tomislav Prokopec (Utrecht University), R. P. Woodard
(University of Florida) | Graviton Loop Corrections to Vacuum Polarization in de Sitter in a
General Covariant Gauge | 61 pages, 1 figure, 11 tables, version 2 (63 pages) revised for
publication in CQG | Class. Quantum Grav. 32 (2015) 195014 | 10.1088/0264-9381/32/19/195014 | UFIFT-QG-15-02 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We evaluate the one-graviton loop contribution to the vacuum polarization on
de Sitter background in a 1-parameter family of exact, de Sitter invariant
gauges. Our result is computed using dimensional regularization and fully
renormalized with BPHZ counterterms, which must include a noninvariant owing to
the time-ord... | [
{
"created": "Fri, 3 Apr 2015 17:21:13 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Sep 2015 01:10:43 GMT",
"version": "v2"
}
] | 2015-09-17 | [
[
"Glavan",
"D.",
"",
"Utrecht University"
],
[
"Miao",
"S. P.",
"",
"National Cheng Kung\n University"
],
[
"Prokopec",
"Tomislav",
"",
"Utrecht University"
],
[
"Woodard",
"R. P.",
"",
"University of Florida"
]
] | We evaluate the one-graviton loop contribution to the vacuum polarization on de Sitter background in a 1-parameter family of exact, de Sitter invariant gauges. Our result is computed using dimensional regularization and fully renormalized with BPHZ counterterms, which must include a noninvariant owing to the time-order... |
1007.3937 | Thomas Sotiriou | Vincenzo Vitagliano, Thomas P. Sotiriou, Stefano Liberati | The dynamics of generalized Palatini Theories of Gravity | v1: 6 pages; v2: minor changes to match published version | Phys.Rev.D82:084007,2010 | 10.1103/PhysRevD.82.084007 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that in f(R) theories of gravity with an independent connection
which can be both non-metric and non symmetric, this connection can always be
algebraically eliminated in favour of the metric and the matter fields, so long
as it is not coupled to the matter explicitly. We show here that this is a
special c... | [
{
"created": "Thu, 22 Jul 2010 16:36:01 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Nov 2010 13:04:50 GMT",
"version": "v2"
}
] | 2010-11-03 | [
[
"Vitagliano",
"Vincenzo",
""
],
[
"Sotiriou",
"Thomas P.",
""
],
[
"Liberati",
"Stefano",
""
]
] | It is known that in f(R) theories of gravity with an independent connection which can be both non-metric and non symmetric, this connection can always be algebraically eliminated in favour of the metric and the matter fields, so long as it is not coupled to the matter explicitly. We show here that this is a special cha... |
2107.02323 | Puskar Mondal | Puskar Mondal | On the non-blow up of energy critical nonlinear massless scalar fields
in `3+1' dimensional globally hyperbolic spacetimes: Light cone estimates | null | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Here we prove a global existence theorem for the solutions of the semi-linear
wave equation with critical non-linearity admitting a positive definite
Hamiltonian. Formulating a parametrix for the wave equation in a globally
hyperbolic curved spacetime, we derive an apriori pointwise bound for the
solution of the nonl... | [
{
"created": "Mon, 5 Jul 2021 23:43:22 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Oct 2021 16:41:50 GMT",
"version": "v2"
}
] | 2021-10-04 | [
[
"Mondal",
"Puskar",
""
]
] | Here we prove a global existence theorem for the solutions of the semi-linear wave equation with critical non-linearity admitting a positive definite Hamiltonian. Formulating a parametrix for the wave equation in a globally hyperbolic curved spacetime, we derive an apriori pointwise bound for the solution of the nonlin... |
gr-qc/9811002 | Jerry B. Griffiths | J. B. Griffiths and S. Micciche | The extensions of gravitational soliton solutions with real poles | 14 pages, LaTeX, 6 figures included using graphicx; to appear in Gen.
Rel. Grav | Gen.Rel.Grav. 30 (1999) 867-888 | 10.1023/A:1026638305384 | null | gr-qc | null | We analyse vacuum gravitational "soliton" solutions with real poles in the
cosmological context. It is well known that these solutions contain
singularities on certain null hypersurfaces. Using a Kasner seed solution, we
demonstrate that these may contain thin sheets of null matter or may be simple
coordinate singula... | [
{
"created": "Mon, 2 Nov 1998 13:20:53 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Griffiths",
"J. B.",
""
],
[
"Micciche",
"S.",
""
]
] | We analyse vacuum gravitational "soliton" solutions with real poles in the cosmological context. It is well known that these solutions contain singularities on certain null hypersurfaces. Using a Kasner seed solution, we demonstrate that these may contain thin sheets of null matter or may be simple coordinate singulari... |
2003.11284 | Sergey L Cherkas | S. L. Cherkas, V. L. Kalashnikov | Evidence of time evolution in quantum gravity | 20 pages | Universe 2020, 6(5), 67 | 10.3390/universe6050067 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We argue that the problem of time is not a crucial issue inherent in the
quantum picture of the universe evolution. On the minisuperspace model example
with the massless scalar field, we demonstrate four approaches to the
description of quantum evolution, which give similar results explicitly. The
relevance of these ... | [
{
"created": "Wed, 25 Mar 2020 09:07:38 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Apr 2020 07:59:44 GMT",
"version": "v2"
}
] | 2020-05-15 | [
[
"Cherkas",
"S. L.",
""
],
[
"Kalashnikov",
"V. L.",
""
]
] | We argue that the problem of time is not a crucial issue inherent in the quantum picture of the universe evolution. On the minisuperspace model example with the massless scalar field, we demonstrate four approaches to the description of quantum evolution, which give similar results explicitly. The relevance of these ap... |
1109.4738 | Chiang-Mei Chen | Ming-Fan Wu, Chiang-Mei Chen, Jian-Liang Liu, James M. Nester | Optimal Choices of Reference for a Quasi-local Energy: Spherically
Symmetric Spacetimes | 12 pages | null | 10.1103/PhysRevD.84.084047 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For a given timelike displacement vector the covariant Hamiltonian
quasi-local energy expression requires a proper choice of reference spacetime.
We propose a program for determining the reference by embedding a neighborhood
of the two-sphere boundary in the dynamic spacetime into a Minkowski reference,
so that the t... | [
{
"created": "Thu, 22 Sep 2011 09:10:46 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Wu",
"Ming-Fan",
""
],
[
"Chen",
"Chiang-Mei",
""
],
[
"Liu",
"Jian-Liang",
""
],
[
"Nester",
"James M.",
""
]
] | For a given timelike displacement vector the covariant Hamiltonian quasi-local energy expression requires a proper choice of reference spacetime. We propose a program for determining the reference by embedding a neighborhood of the two-sphere boundary in the dynamic spacetime into a Minkowski reference, so that the two... |
2308.14796 | Jaime Redondo-Yuste | Jaime Redondo-Yuste, Gregorio Carullo, Justin L. Ripley, Emanuele
Berti and Vitor Cardoso | Spin dependence of black hole ringdown nonlinearities | v3 (matches published version) | Phys. Rev. D 109, L101503 (2024) | 10.1103/PhysRevD.109.L101503 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nonlinear character of general relativity leaves its imprint in the
coalescence of two black holes, from the inspiral to the final ringdown stage.
To quantify the impact of nonlinearities, we work at second order in black hole
perturbation theory and we study the excitation of second-order modes relative
to the f... | [
{
"created": "Mon, 28 Aug 2023 18:00:02 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jan 2024 14:58:42 GMT",
"version": "v2"
},
{
"created": "Mon, 10 Jun 2024 17:50:00 GMT",
"version": "v3"
}
] | 2024-06-11 | [
[
"Redondo-Yuste",
"Jaime",
""
],
[
"Carullo",
"Gregorio",
""
],
[
"Ripley",
"Justin L.",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Cardoso",
"Vitor",
""
]
] | The nonlinear character of general relativity leaves its imprint in the coalescence of two black holes, from the inspiral to the final ringdown stage. To quantify the impact of nonlinearities, we work at second order in black hole perturbation theory and we study the excitation of second-order modes relative to the fir... |
2304.00322 | Mostafa Bousder Mr | M. Bousder and Z Sakhi | Topological densities in Einstein-scalar-Gauss-Bonnet gravity | 19 pages, 1 figure | null | null | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | The present work is devoted to studying the background dynamical evolution of
a scalar field in Einstein-Gauss-Bonnet gravity in maximally symmetric
space-time. This study is useful for giving meaning to the presence of two
Gauss-Bonnet vacua, instead of using the spherically symmetric bubbles of the
"true" vacuum ex... | [
{
"created": "Sat, 1 Apr 2023 14:23:09 GMT",
"version": "v1"
}
] | 2023-04-04 | [
[
"Bousder",
"M.",
""
],
[
"Sakhi",
"Z",
""
]
] | The present work is devoted to studying the background dynamical evolution of a scalar field in Einstein-Gauss-Bonnet gravity in maximally symmetric space-time. This study is useful for giving meaning to the presence of two Gauss-Bonnet vacua, instead of using the spherically symmetric bubbles of the "true" vacuum expa... |
1006.1500 | Mauro Carfora | Mauro Carfora | Ricci Flow Conjugated Initial Data Sets for Einstein Equations | 74 pages, 22 figures added, submitted version. The paper has been
vastly expanded with a new detailed introduction and with added results on
the asymptotics of the Ricci flow averaged data. This work is partly based on
the lectures of the author at the GGI School "Coarse--Grained Cosmology",
Florence January 26... | null | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss a natural form of Ricci--flow conjugation between two distinct
general relativistic data sets given on a compact $n\geq 3$-dimensional
manifold $\Sigma$. We establish the existence of the relevant entropy
functionals for the matter and geometrical variables, their monotonicity
properties, and the associate... | [
{
"created": "Tue, 8 Jun 2010 09:32:02 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Dec 2010 13:39:46 GMT",
"version": "v2"
}
] | 2010-12-15 | [
[
"Carfora",
"Mauro",
""
]
] | We discuss a natural form of Ricci--flow conjugation between two distinct general relativistic data sets given on a compact $n\geq 3$-dimensional manifold $\Sigma$. We establish the existence of the relevant entropy functionals for the matter and geometrical variables, their monotonicity properties, and the associated ... |
1307.6816 | Alexander Graham | John D. Barrow and Alexander A. H. Graham | General Dynamics of Varying-Alpha Universes | 27 pages, 6 figures. v2: typos corrected, matches published version | Phys. Rev. D 88, 103513 (2013) | 10.1103/PhysRevD.88.103513 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce and study extensions of the varying alpha theory of
Bekenstein-Sandvik-Barrow-Magueijo to allow for an arbitrary coupling function
and self-interaction potential term in the theory. We study the full evolution
equations without assuming that variations in alpha have a negligible effect on
the expansion s... | [
{
"created": "Thu, 25 Jul 2013 17:16:21 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Nov 2013 17:27:27 GMT",
"version": "v2"
}
] | 2013-11-14 | [
[
"Barrow",
"John D.",
""
],
[
"Graham",
"Alexander A. H.",
""
]
] | We introduce and study extensions of the varying alpha theory of Bekenstein-Sandvik-Barrow-Magueijo to allow for an arbitrary coupling function and self-interaction potential term in the theory. We study the full evolution equations without assuming that variations in alpha have a negligible effect on the expansion sca... |
1812.05728 | Anantya Bhatnagar | Anantya Bhatnagar | A Consideration of Cosmic Evolution from the Points of View of the
Inflationary and Cyclic Theories | 13 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This study reviews the advances made in inflationary theory, especially
regarding the seeming disparity between inflation energy and dark energy, and
their significance to cosmic evolution as a whole. I attempt to connect the two
sources of expansion and thereby enhance the predictive capacity of the
consensus model.... | [
{
"created": "Thu, 13 Dec 2018 23:18:06 GMT",
"version": "v1"
}
] | 2018-12-17 | [
[
"Bhatnagar",
"Anantya",
""
]
] | This study reviews the advances made in inflationary theory, especially regarding the seeming disparity between inflation energy and dark energy, and their significance to cosmic evolution as a whole. I attempt to connect the two sources of expansion and thereby enhance the predictive capacity of the consensus model. I... |
1111.2865 | Jonathan Engle | Jonathan Engle | A proposed proper EPRL vertex amplitude | 32 pages; Review material abbreviated, section 2 better organized,
and typos corrected; Sign error and affected discussion corrected, discussion
of Spin(4) covariance added, and guess at Lorentzian generalization noted, as
well as other minor corrections; Proof of lemma 3 corrected, and some minor
corrections m... | null | 10.1103/PhysRevD.87.084048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As established in a prior work of the author, the linear simplicity
constraints used in the construction of the so-called `new' spin-foam models
mix three of the five sectors of Plebanski theory as well as two dynamical
orientations, and this is the reason for multiple terms in the asymptotics of
the EPRL vertex ampl... | [
{
"created": "Fri, 11 Nov 2011 21:03:12 GMT",
"version": "v1"
},
{
"created": "Sun, 25 Dec 2011 05:08:15 GMT",
"version": "v2"
},
{
"created": "Sun, 13 Jan 2013 17:29:43 GMT",
"version": "v3"
},
{
"created": "Fri, 13 Sep 2013 01:31:27 GMT",
"version": "v4"
}
] | 2013-09-16 | [
[
"Engle",
"Jonathan",
""
]
] | As established in a prior work of the author, the linear simplicity constraints used in the construction of the so-called `new' spin-foam models mix three of the five sectors of Plebanski theory as well as two dynamical orientations, and this is the reason for multiple terms in the asymptotics of the EPRL vertex amplit... |
1501.04869 | Francisco Linares | Francisco X. Linares, Miguel A. Garcia-Aspeitia and L. Arturo
Ure\~na-Lopez | Stellar models in Brane Worlds | 9 pages, 6 figures | Phys. Rev. D 92, 024037 (2015) | 10.1103/PhysRevD.92.024037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider here a full study of stellar dynamics from the brane-world point
of view in the case of constant density and of a polytropic fluid. We start our
study cataloguing the minimal requirements to obtain a compact object with a
Schwarszchild exterior, highlighting the low and high energy limit, the
boundary con... | [
{
"created": "Tue, 20 Jan 2015 16:33:23 GMT",
"version": "v1"
}
] | 2015-07-29 | [
[
"Linares",
"Francisco X.",
""
],
[
"Garcia-Aspeitia",
"Miguel A.",
""
],
[
"Ureña-Lopez",
"L. Arturo",
""
]
] | We consider here a full study of stellar dynamics from the brane-world point of view in the case of constant density and of a polytropic fluid. We start our study cataloguing the minimal requirements to obtain a compact object with a Schwarszchild exterior, highlighting the low and high energy limit, the boundary condi... |
2306.04703 | Parthapratim Mahapatra | Parthapratim Mahapatra | An octupolar test of general relativity | 11 pages, 4 figures | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Compact binaries with unequal masses and whose orbits are not aligned with
the observer's line of sight are excellent probes of gravitational radiation
beyond the quadrupole approximation. Among the compact binaries observed so
far, strong evidence of octupolar modes is seen in GW190412 and GW190814, two
binary black... | [
{
"created": "Wed, 7 Jun 2023 18:09:37 GMT",
"version": "v1"
}
] | 2023-06-09 | [
[
"Mahapatra",
"Parthapratim",
""
]
] | Compact binaries with unequal masses and whose orbits are not aligned with the observer's line of sight are excellent probes of gravitational radiation beyond the quadrupole approximation. Among the compact binaries observed so far, strong evidence of octupolar modes is seen in GW190412 and GW190814, two binary black h... |
gr-qc/0008073 | Jose Wadih Maluf | J. W. Maluf, J. F. da Rocha-Neto, T. M. Toribio and K. H.
Castello-Branco | Energy-momentum of the gravitational field in the teleparallel geometry | 12 pages, Latex, no figures. Extended version of the talk presented
at the IX Marcel Grossmann Conference, Rome | null | null | null | gr-qc | null | The Hamiltonian formulation of the teleparallel equivalent of general
relativity without gauge fixing has recently been established in terms of the
Hamiltonian constraint and a set of six primary constraints. Altogether, they
constitute a set of first class constraints. In view of the constraint
structure we establis... | [
{
"created": "Tue, 29 Aug 2000 19:23:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Maluf",
"J. W.",
""
],
[
"da Rocha-Neto",
"J. F.",
""
],
[
"Toribio",
"T. M.",
""
],
[
"Castello-Branco",
"K. H.",
""
]
] | The Hamiltonian formulation of the teleparallel equivalent of general relativity without gauge fixing has recently been established in terms of the Hamiltonian constraint and a set of six primary constraints. Altogether, they constitute a set of first class constraints. In view of the constraint structure we establish ... |
gr-qc/0602050 | Richard Brown A | Richard A. Brown (ICG Portsmouth) | Brane Universes with Gauss-Bonnet-Induced-Gravity | 12 pages, 19 figures. Minor modifications to text, comments on
phantom behaviour added. References added. As submitted to JCAP | Gen.Rel.Grav.39:477-500,2007 | 10.1007/s10714-007-0398-2 | null | gr-qc hep-th | null | The DGP brane world model allows us to get the observed late time
acceleration via modified gravity, without the need for a ``dark energy''
field. This can then be generalised by the inclusion of high energy terms, in
the form of a Gauss-Bonnet bulk. This is the basis of the
Gauss-Bonnet-Induced-Gravity (GBIG) model ... | [
{
"created": "Mon, 13 Feb 2006 21:51:28 GMT",
"version": "v1"
},
{
"created": "Wed, 3 May 2006 17:11:16 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Brown",
"Richard A.",
"",
"ICG Portsmouth"
]
] | The DGP brane world model allows us to get the observed late time acceleration via modified gravity, without the need for a ``dark energy'' field. This can then be generalised by the inclusion of high energy terms, in the form of a Gauss-Bonnet bulk. This is the basis of the Gauss-Bonnet-Induced-Gravity (GBIG) model ex... |
gr-qc/0605135 | Neil J. Cornish | Neil J. Cornish and Edward K. Porter | Catching Super Massive Black Hole Binaries Without a Net | 4 pages, 3 figures, Refined search algorithm, added low SNR example | Phys.Rev.D75:021301,2007 | 10.1103/PhysRevD.75.021301 | null | gr-qc astro-ph | null | The gravitational wave signals from coalescing Supermassive Black Hole
Binaries are prime targets for the Laser Interferometer Space Antenna (LISA).
With optimal data processing techniques, the LISA observatory should be able to
detect black hole mergers anywhere in the Universe. The challenge is to find
ways to dig ... | [
{
"created": "Fri, 26 May 2006 19:56:30 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Aug 2006 18:01:07 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Cornish",
"Neil J.",
""
],
[
"Porter",
"Edward K.",
""
]
] | The gravitational wave signals from coalescing Supermassive Black Hole Binaries are prime targets for the Laser Interferometer Space Antenna (LISA). With optimal data processing techniques, the LISA observatory should be able to detect black hole mergers anywhere in the Universe. The challenge is to find ways to dig th... |
0911.1421 | Sergey S. Kokarev | Sergey S. Kokarev | Plate-Universe in Multidimensional Elasticity Theory | 20 pages, 20 figures | Gravitation and Cosmology (2001) v7, 63-73 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A number of boundary problems in multidimensional elasticity theory are
solved. The solutions can be treated as the simplest cosmological models. Some
specific properties of the solutions and experimental consequences of the
theory are discussed.
| [
{
"created": "Sat, 7 Nov 2009 14:41:39 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Kokarev",
"Sergey S.",
""
]
] | A number of boundary problems in multidimensional elasticity theory are solved. The solutions can be treated as the simplest cosmological models. Some specific properties of the solutions and experimental consequences of the theory are discussed. |
2303.14047 | Zhen Zhang | Rui Zhang, Zhen Zhang | Dark Energy on Astrophysical Scales and Its Detection in the Milky Way | 37 pages, 5 figures, 2 tables, published in JCAP; additional
information can be found in the arXiv eprint, providing more detailed
insights | JCAP 06 (2023) 031 | 10.1088/1475-7516/2023/06/031 | null | gr-qc astro-ph.CO astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The origin and nature of dark energy is one of the most significant
challenges in modern science. This research aims to investigate dark energy on
astrophysical scales and provide a cosmology-independent method to measure its
equation-of-state parameter $w$. To accomplish this, we introduce the concept
of a perfect f... | [
{
"created": "Wed, 22 Mar 2023 05:38:03 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Mar 2023 11:41:39 GMT",
"version": "v2"
},
{
"created": "Thu, 22 Jun 2023 07:07:08 GMT",
"version": "v3"
},
{
"created": "Mon, 11 Sep 2023 08:48:08 GMT",
"version": "v4"
}
] | 2024-02-15 | [
[
"Zhang",
"Rui",
""
],
[
"Zhang",
"Zhen",
""
]
] | The origin and nature of dark energy is one of the most significant challenges in modern science. This research aims to investigate dark energy on astrophysical scales and provide a cosmology-independent method to measure its equation-of-state parameter $w$. To accomplish this, we introduce the concept of a perfect flu... |
1105.2882 | Hristu Culetu | Hristu Culetu | Black hole horizon around a relativistic star | 5 pages, no figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A star surrounded by a black hole generated by it is analyzed. For an outer
static observer the black hole mass (and radius) depends on his position in the
gravitational field of the star. In spite of the black hole presence, the
geometry remains that of Schwarzschild. For an inner observer the black hole
mass is con... | [
{
"created": "Sat, 14 May 2011 10:01:53 GMT",
"version": "v1"
}
] | 2011-05-23 | [
[
"Culetu",
"Hristu",
""
]
] | A star surrounded by a black hole generated by it is analyzed. For an outer static observer the black hole mass (and radius) depends on his position in the gravitational field of the star. In spite of the black hole presence, the geometry remains that of Schwarzschild. For an inner observer the black hole mass is const... |
1601.04064 | Noemi Frusciante | Noemi Frusciante, Georgios Papadomanolakis and Alessandra Silvestri | An Extended action for the effective field theory of dark energy: a
stability analysis and a complete guide to the mapping at the basis of
EFTCAMB | 36 pages, matches published version, typos corrected | JCAP 1607 (2016) no.07, 018 | 10.1088/1475-7516/2016/07/018 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a generalization of the effective field theory (EFT) formalism for
dark energy and modified gravity models to include operators with higher order
spatial derivatives. This allows the extension of the EFT framework to a wider
class of gravity theories such as Horava gravity. We present the corresponding
ext... | [
{
"created": "Fri, 15 Jan 2016 20:55:15 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Aug 2016 10:01:27 GMT",
"version": "v2"
}
] | 2016-08-04 | [
[
"Frusciante",
"Noemi",
""
],
[
"Papadomanolakis",
"Georgios",
""
],
[
"Silvestri",
"Alessandra",
""
]
] | We present a generalization of the effective field theory (EFT) formalism for dark energy and modified gravity models to include operators with higher order spatial derivatives. This allows the extension of the EFT framework to a wider class of gravity theories such as Horava gravity. We present the corresponding exten... |
1608.05392 | Marc Casals | Marc Casals, Chris Kavanagh and Adrian C. Ottewill | High-order tail in Kerr spacetime | 29 pages, 4 figures | Phys. Rev. D 94, 124053 (2016) | 10.1103/PhysRevD.94.124053 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the late-time tail of the retarded Green function for the
dynamics of a linear field perturbation of Kerr spacetime. We develop an
analytical formalism for obtaining the late-time tail up to arbitrary order for
general integer spin of the field. We then apply this formalism to obtain the
details of the... | [
{
"created": "Thu, 18 Aug 2016 19:52:34 GMT",
"version": "v1"
}
] | 2017-01-04 | [
[
"Casals",
"Marc",
""
],
[
"Kavanagh",
"Chris",
""
],
[
"Ottewill",
"Adrian C.",
""
]
] | We investigate the late-time tail of the retarded Green function for the dynamics of a linear field perturbation of Kerr spacetime. We develop an analytical formalism for obtaining the late-time tail up to arbitrary order for general integer spin of the field. We then apply this formalism to obtain the details of the f... |
0803.0620 | Miodrag Krmar | Vladan Pankovic, Jovan Ivanovic, Milan Predojevic, Aleksandar-Meda
Ivanovic | The Simplest Determination of the Thermodynamical Characteristics of
Schwarzschild, Kerr Andreissner-Nordstrom Black Hole | 5 pages, no figures | null | null | PH-Ns/01-08 | gr-qc | http://creativecommons.org/licenses/by-nc-sa/3.0/ | In this work, generalizing our previous results, we determine in an original
and the simplest way three most important thermodynamical characteristics
(Bekenstein-Hawking entropy, Bekenstein quantization of the entropy or (outer)
horizon surface area and Hawking temperature) of Schwarzschild, Kerr and
Reissner-Nordst... | [
{
"created": "Wed, 5 Mar 2008 10:14:23 GMT",
"version": "v1"
}
] | 2008-03-06 | [
[
"Pankovic",
"Vladan",
""
],
[
"Ivanovic",
"Jovan",
""
],
[
"Predojevic",
"Milan",
""
],
[
"Ivanovic",
"Aleksandar-Meda",
""
]
] | In this work, generalizing our previous results, we determine in an original and the simplest way three most important thermodynamical characteristics (Bekenstein-Hawking entropy, Bekenstein quantization of the entropy or (outer) horizon surface area and Hawking temperature) of Schwarzschild, Kerr and Reissner-Nordstro... |
2205.04628 | Stephen Adler | Stephen L. Adler and K. S. Virbhadra | Cosmological constant corrections to the photon sphere and black hole
shadow radii | 5 pages | General Relativity and Gravitation 54:93 (2022) | 10.1007/s10714-022-02976-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the equations determining the photon sphere radius and the black
hole shadow radius, and calculate the cosmological constant corrections arising
when the dark energy action has the usual form, and when dark energy arises
from a Weyl scaling invariant dark energy action. For black hole targets of the
Event H... | [
{
"created": "Tue, 10 May 2022 02:16:26 GMT",
"version": "v1"
},
{
"created": "Wed, 11 May 2022 20:34:29 GMT",
"version": "v2"
},
{
"created": "Tue, 30 Aug 2022 23:49:14 GMT",
"version": "v3"
}
] | 2023-01-03 | [
[
"Adler",
"Stephen L.",
""
],
[
"Virbhadra",
"K. S.",
""
]
] | We review the equations determining the photon sphere radius and the black hole shadow radius, and calculate the cosmological constant corrections arising when the dark energy action has the usual form, and when dark energy arises from a Weyl scaling invariant dark energy action. For black hole targets of the Event Hor... |
1012.2153 | Yun Soo Myung | Yun Soo Myung | Graviton and scalar propagations on AdS(4) space in f(R) gravities | 11 pages, no figures, version to appear in EPJC | Eur.Phys.J.C71:1550,2011 | 10.1140/epjc/s10052-011-1550-4 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate propagations of graviton and additional scalar on
four-dimensional anti de Sitter (AdS$_4$) space using $f(R)$ gravity models
with external sources. It is shown that there is the van Dam-Veltman-Zakharov
(vDVZ) discontinuity in $f(R)$ gravity models because $f(R)$ gravity implies GR
with additional sca... | [
{
"created": "Fri, 10 Dec 2010 01:16:30 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Jan 2011 07:52:39 GMT",
"version": "v2"
}
] | 2011-03-28 | [
[
"Myung",
"Yun Soo",
""
]
] | We investigate propagations of graviton and additional scalar on four-dimensional anti de Sitter (AdS$_4$) space using $f(R)$ gravity models with external sources. It is shown that there is the van Dam-Veltman-Zakharov (vDVZ) discontinuity in $f(R)$ gravity models because $f(R)$ gravity implies GR with additional scala... |
1211.0626 | Orlando Luongo | Orlando Luongo, Hernando Quevedo | Cosmographic study of the universe's specific heat: A landscape for
Cosmology? | null | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a method for constructing the specific heat for the universe by
following standard definitions of classical thermodynamics, in a spatially flat
homogeneous and isotropic spacetime. We use cosmography to represent the
specific heat in terms of measurable quantities, and show that a negative
specific heat at... | [
{
"created": "Sat, 3 Nov 2012 17:38:29 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Apr 2013 12:53:56 GMT",
"version": "v2"
}
] | 2013-04-11 | [
[
"Luongo",
"Orlando",
""
],
[
"Quevedo",
"Hernando",
""
]
] | We propose a method for constructing the specific heat for the universe by following standard definitions of classical thermodynamics, in a spatially flat homogeneous and isotropic spacetime. We use cosmography to represent the specific heat in terms of measurable quantities, and show that a negative specific heat at c... |
0804.4029 | Miquel Trias | Miquel Trias, Alberto Vecchio and John Veitch | Markov chain Monte Carlo searches for Galactic binaries in Mock LISA
Data Challenge 1B data sets | 11 pages, 5 figures, 12th GWDAW (Gravitational Wave Data Analysis
Workshop). Accepted for publication in CQG | Class.Quant.Grav.25:184028,2008 | 10.1088/0264-9381/25/18/184028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We are developing a Bayesian approach based on Markov chain Monte Carlo
techniques to search for and extract information about white dwarf binary
systems with the Laser Interferometer Space Antenna (LISA). Here we present
results obtained by applying an initial implementation of this method to some
of the data sets r... | [
{
"created": "Thu, 24 Apr 2008 22:50:09 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Jul 2008 10:03:31 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Trias",
"Miquel",
""
],
[
"Vecchio",
"Alberto",
""
],
[
"Veitch",
"John",
""
]
] | We are developing a Bayesian approach based on Markov chain Monte Carlo techniques to search for and extract information about white dwarf binary systems with the Laser Interferometer Space Antenna (LISA). Here we present results obtained by applying an initial implementation of this method to some of the data sets rel... |
gr-qc/0506073 | Max Karlovini | Max Karlovini and Rikard von Unge | Charged black holes in compactified spacetimes | 20 pages, 3 figures. v2: Typo corrected, reference added | Phys.Rev. D72 (2005) 104013 | 10.1103/PhysRevD.72.104013 | null | gr-qc hep-th | null | We construct and investigate a compactified version of the four-dimensional
Reissner-Nordstrom-NUT solution, generalizing the compactified Schwarzschild
black hole that has been previously studied by several workers. Our approach to
compactification is based on dimensional reduction with respect to the
stationary Kil... | [
{
"created": "Mon, 13 Jun 2005 16:41:49 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Jul 2005 06:45:04 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"Karlovini",
"Max",
""
],
[
"von Unge",
"Rikard",
""
]
] | We construct and investigate a compactified version of the four-dimensional Reissner-Nordstrom-NUT solution, generalizing the compactified Schwarzschild black hole that has been previously studied by several workers. Our approach to compactification is based on dimensional reduction with respect to the stationary Killi... |
gr-qc/0404025 | Nelson Christensen | Richard Umst\"atter, Renate Meyer, R\'ejean J. Dupuis, John Veitch,
Graham Woan, Nelson Christensen | Detecting gravitational radiation from neutron stars using a
six-parameter adaptive MCMC method | Submitted to Classical and Quantum Gravity for GWDAW-8 proceedings | AIP Conf.Proc.735:336-343,2005 | 10.1063/1.1835231 | null | gr-qc | null | We present a Markov chain Monte Carlo technique for detecting gravitational
radiation from a neutron star in laser interferometer data. The algorithm can
estimate up to six unknown parameters of the target, including the rotation
frequency and frequency derivative, using reparametrization, delayed rejection
and simul... | [
{
"created": "Tue, 6 Apr 2004 17:22:56 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Umstätter",
"Richard",
""
],
[
"Meyer",
"Renate",
""
],
[
"Dupuis",
"Réjean J.",
""
],
[
"Veitch",
"John",
""
],
[
"Woan",
"Graham",
""
],
[
"Christensen",
"Nelson",
""
]
] | We present a Markov chain Monte Carlo technique for detecting gravitational radiation from a neutron star in laser interferometer data. The algorithm can estimate up to six unknown parameters of the target, including the rotation frequency and frequency derivative, using reparametrization, delayed rejection and simulat... |
gr-qc/9706044 | Hongsu Kim | Hongsu Kim (Ewha Women's Univ., Korea) | Thermodynamics of Black Holes in Brans-Dicke Gravity | 14 pages, Revtex (appeared in a proceedings in Nuovo Cimento (1996)) | Nuovo Cim.B112:329-338,1997 | null | null | gr-qc hep-th | null | It has recently been argued that non-trivial Brans-Dicke black hole solutions
different from the usual Schwarzschild solution could exist. We attemt here to
``censor'' these non-trivial Brans-Dicke black hole solutions by examining
their thermodynamic properties. Quantities like Hawking temperature and entropy
of the... | [
{
"created": "Sat, 14 Jun 1997 05:30:35 GMT",
"version": "v1"
}
] | 2011-04-20 | [
[
"Kim",
"Hongsu",
"",
"Ewha Women's Univ., Korea"
]
] | It has recently been argued that non-trivial Brans-Dicke black hole solutions different from the usual Schwarzschild solution could exist. We attemt here to ``censor'' these non-trivial Brans-Dicke black hole solutions by examining their thermodynamic properties. Quantities like Hawking temperature and entropy of the b... |
1412.5892 | Detlev Buchholz | Detlev Buchholz, Rainer Verch | Macroscopic aspects of the Unruh effect | 21 pages, no figures; v3: remarks on the Tolman-Ehrenfest effect and
2 references added; v4: version as to appear in "Classical and Quantum
Gravity" | null | 10.1088/0264-9381/32/24/245004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Macroscopic concepts pertaining to the Unruh effect are elaborated and used
to clarify its physical manifestations. Based on a description of the motion of
accelerated, spatially extended laboratories in Minkowski space in terms of
Poincar\'e transformations, it is shown that, from a macroscopic perspective,
an accel... | [
{
"created": "Thu, 18 Dec 2014 15:27:17 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Dec 2014 12:50:38 GMT",
"version": "v2"
},
{
"created": "Wed, 21 Jan 2015 10:28:45 GMT",
"version": "v3"
},
{
"created": "Fri, 25 Sep 2015 11:00:59 GMT",
"version": "v4"
}
] | 2015-12-16 | [
[
"Buchholz",
"Detlev",
""
],
[
"Verch",
"Rainer",
""
]
] | Macroscopic concepts pertaining to the Unruh effect are elaborated and used to clarify its physical manifestations. Based on a description of the motion of accelerated, spatially extended laboratories in Minkowski space in terms of Poincar\'e transformations, it is shown that, from a macroscopic perspective, an acceler... |
gr-qc/0107042 | Woodard | R. P. Woodard (University of Florida at Gainesville) | A Newtonian Model for the Quantum Gravitational Back-Reaction on
Inflation | 4 pages, LaTeX 2.6, no figures. Talk given at the International
Meeting on Quantum Gravity and Spectral Geometry, Naples, Italy, July 2-7,
2001 | Nucl.Phys.Proc.Suppl. 104 (2002) 173-176 | 10.1016/S0920-5632(01)01607-3 | UFIFT-HET-01-11 | gr-qc astro-ph hep-ph | null | Quantum gravitational back-reaction offers a simultaneous explanation for why
the cosmological constant is so small and a natural model of inflation in which
scalars play no role. In this talk I review previous work and present a simple
model of the mechanism in which the induced stress tensor behaves like negative
v... | [
{
"created": "Wed, 11 Jul 2001 15:36:47 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Woodard",
"R. P.",
"",
"University of Florida at Gainesville"
]
] | Quantum gravitational back-reaction offers a simultaneous explanation for why the cosmological constant is so small and a natural model of inflation in which scalars play no role. In this talk I review previous work and present a simple model of the mechanism in which the induced stress tensor behaves like negative vac... |
1908.09126 | Kirill Bronnikov | K.A. Bronnikov, J.C. Fabris and Denis C. Rodrigues | On the instability of some k-essence space-times | 7 pages, no figures | Int. J. Mod. Phys. D 2050016 (2020) | 10.1142/S0218271820500169 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the stability properties of static, spherically symmetric
configurations in k-essence theories with the Lagrangians of the form $F(X)$,
$X \equiv \phi_{,\alpha} \phi^{,\alpha}$. The instability under spherically
symmetric perturbations is proved for two recently obtained exact solutions for
$F(X) =F_0 X^{1/3... | [
{
"created": "Sat, 24 Aug 2019 11:39:28 GMT",
"version": "v1"
}
] | 2020-10-20 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Fabris",
"J. C.",
""
],
[
"Rodrigues",
"Denis C.",
""
]
] | We study the stability properties of static, spherically symmetric configurations in k-essence theories with the Lagrangians of the form $F(X)$, $X \equiv \phi_{,\alpha} \phi^{,\alpha}$. The instability under spherically symmetric perturbations is proved for two recently obtained exact solutions for $F(X) =F_0 X^{1/3}$... |
2202.03809 | Diego Rubiera-Garcia | Merce Guerrero, Gonzalo J. Olmo, Diego Rubiera-Garcia, Diego
S\'aez-Chill\'on G\'omez | Light ring images of double photon spheres in black hole and wormhole
space-times | 15 pages, 35 figures | null | 10.1103/PhysRevD.105.084057 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The silhouette of a black hole having a critical curve (an unstable bound
photon orbit) when illuminated by an optically thin accretion disk whose
emission is confined to the equatorial plane shows a distinctive central
brightness depression (the shadow) whose outer edge consists of a series of
strongly lensed, self-... | [
{
"created": "Tue, 8 Feb 2022 11:56:23 GMT",
"version": "v1"
}
] | 2022-05-11 | [
[
"Guerrero",
"Merce",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
],
[
"Gómez",
"Diego Sáez-Chillón",
""
]
] | The silhouette of a black hole having a critical curve (an unstable bound photon orbit) when illuminated by an optically thin accretion disk whose emission is confined to the equatorial plane shows a distinctive central brightness depression (the shadow) whose outer edge consists of a series of strongly lensed, self-si... |
1511.05470 | Elizabeth Winstanley | Supakchai Ponglertsakul, Sam Dolan and Elizabeth Winstanley | Einstein-charged scalar field theory: black hole solutions and their
stability | 6 pages, 4 figures, submitted to the Proceedings of the Second Karl
Schwarzschild Meeting, Frankfurt, 20-24 July 2015 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A complex scalar field on a charged black hole in a cavity is known to
experience a superradiant instability. We investigate possible final states of
this instability. We find hairy black hole solutions of a fully coupled system
of Einstein gravity and a charged scalar field. The black holes are surrounded
by a refle... | [
{
"created": "Tue, 17 Nov 2015 17:11:01 GMT",
"version": "v1"
}
] | 2015-11-18 | [
[
"Ponglertsakul",
"Supakchai",
""
],
[
"Dolan",
"Sam",
""
],
[
"Winstanley",
"Elizabeth",
""
]
] | A complex scalar field on a charged black hole in a cavity is known to experience a superradiant instability. We investigate possible final states of this instability. We find hairy black hole solutions of a fully coupled system of Einstein gravity and a charged scalar field. The black holes are surrounded by a reflect... |
gr-qc/9502035 | Harald Soleng | Harald H. Soleng | CARTAN: A Mathematica package for tensor computations | CARTAN 1.01 for Unix (Mathematica package) and documentation, 2
uuencoded comp. tar files; version 1.0 replaced with version 1.01; small bug
fixes | "Tensors in Physics: user's guide and disk for the mathematica
package CARTAN version 1.2", H. H. Soleng, Scandinavian University Press,
Oslo (1996), ISBN 82-00-22748-0 | null | null | gr-qc | null | CARTAN is an easy-to-use symbolic, tensor component package based on the
popular Mathematica program. CARTAN makes use of the powerful formalism of
rigid frames, and can return results both in this frame and in the coordinate
basis. CARTAN has predefined functions for computation of tensors such as
Riemann, Ricci, Ei... | [
{
"created": "Fri, 17 Feb 1995 19:00:06 GMT",
"version": "v1"
},
{
"created": "Mon, 29 May 1995 13:10:31 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Soleng",
"Harald H.",
""
]
] | CARTAN is an easy-to-use symbolic, tensor component package based on the popular Mathematica program. CARTAN makes use of the powerful formalism of rigid frames, and can return results both in this frame and in the coordinate basis. CARTAN has predefined functions for computation of tensors such as Riemann, Ricci, Eins... |
1010.3814 | Mohammad Khorrami | Leila Ramezan, Mohammad Khorrami | Spin 0 and spin 1/2 particles in a spherically symmetric static gravity
and a Coulomb field | 12 pages | Int.J.Theor.Phys.49:2918-2928,2010 | 10.1007/s10773-010-0484-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A relativistic particle in an attractive Coulomb field as well as a static
and spherically symmetric gravitational field is studied. The gravitational
field is treated perturbatively and the energy levels are obtained for both
spin 0 (Klein-Gordon) and spin 1/2 (Dirac) particles. The results are shown to
coincide wit... | [
{
"created": "Tue, 19 Oct 2010 06:54:54 GMT",
"version": "v1"
}
] | 2011-01-28 | [
[
"Ramezan",
"Leila",
""
],
[
"Khorrami",
"Mohammad",
""
]
] | A relativistic particle in an attractive Coulomb field as well as a static and spherically symmetric gravitational field is studied. The gravitational field is treated perturbatively and the energy levels are obtained for both spin 0 (Klein-Gordon) and spin 1/2 (Dirac) particles. The results are shown to coincide with ... |
gr-qc/0101086 | Kirill Bronnikov | K.A. Bronnikov and G.N. Shikin | Cylindrically Symmetric Solitons with Nonlinear Self-Gravitating Scalar
Fields | 13 pages, Latex-2e | Grav.Cosmol.7:231-240,2001 | null | null | gr-qc | null | Static, cylindrically symmetric solutions to nonlinear scalar-Einstein
equations are considered. Regularity conditions on the symmetry axis and flat
or string asymptotic conditions are formulated in order to select soliton-like
solutions. Some non-existence theorems are proved, in particular, theorems
asserting (i) t... | [
{
"created": "Mon, 22 Jan 2001 19:40:44 GMT",
"version": "v1"
}
] | 2011-08-11 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Shikin",
"G. N.",
""
]
] | Static, cylindrically symmetric solutions to nonlinear scalar-Einstein equations are considered. Regularity conditions on the symmetry axis and flat or string asymptotic conditions are formulated in order to select soliton-like solutions. Some non-existence theorems are proved, in particular, theorems asserting (i) the... |
0708.0276 | Sarp Akcay | Sarp Akcay, Richard A. Matzner | Area Invariance of Apparent Horizons under Arbitrary Boosts | 19 pages, 3 figures. Added a new section and 2 plots along with a
coauthor | Gen.Rel.Grav.42:387-402,2010 | 10.1007/s10714-009-0859-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is a well known analytic result in general relativity that the
2-dimensional area of the apparent horizon of a black hole remains invariant
regardless of the motion of the observer, and in fact is independent of the $
t=constant $ slice, which can be quite arbitrary in general relativity.
Nonetheless the explicit ... | [
{
"created": "Thu, 2 Aug 2007 05:52:29 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Feb 2008 06:45:12 GMT",
"version": "v2"
},
{
"created": "Sun, 8 Mar 2009 17:33:55 GMT",
"version": "v3"
}
] | 2014-11-18 | [
[
"Akcay",
"Sarp",
""
],
[
"Matzner",
"Richard A.",
""
]
] | It is a well known analytic result in general relativity that the 2-dimensional area of the apparent horizon of a black hole remains invariant regardless of the motion of the observer, and in fact is independent of the $ t=constant $ slice, which can be quite arbitrary in general relativity. Nonetheless the explicit co... |
1409.2615 | Sushant Ghosh Prof | Tae-Hun Lee, Dharmanand Baboolal, Sushant G. Ghosh | Lovelock black holes in a string cloud background | 13 pages, 8 figures, minor changes, Accepted for publication in EPJC | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an exact static, spherically symmetric black hole solution to the
third order Lovelock gravity with a string cloud background in seven dimensions
for the special case when the second and third order Lovelock coefficients are
related via $\tilde{\alpha}^2_2=3\tilde{\alpha}_3\;(\equiv\alpha^2)$. Further,
we ... | [
{
"created": "Tue, 9 Sep 2014 06:54:50 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Sep 2014 08:28:29 GMT",
"version": "v2"
},
{
"created": "Thu, 11 Jun 2015 04:13:39 GMT",
"version": "v3"
}
] | 2015-06-12 | [
[
"Lee",
"Tae-Hun",
""
],
[
"Baboolal",
"Dharmanand",
""
],
[
"Ghosh",
"Sushant G.",
""
]
] | We present an exact static, spherically symmetric black hole solution to the third order Lovelock gravity with a string cloud background in seven dimensions for the special case when the second and third order Lovelock coefficients are related via $\tilde{\alpha}^2_2=3\tilde{\alpha}_3\;(\equiv\alpha^2)$. Further, we ex... |
gr-qc/0602072 | Merced Montesinos | Merced Montesinos | Genuine covariant description of Hamiltonian dynamics | 13 pages, no figures, in VI Mexican School on Gravitation and
Mathematical Physics, eds M. Alcubierre, J.L. Cervantes-Cota, and M.
Montesinos (Bristol and Philadelphia: Institute of Physics Publishing, 2005) | J.Phys.Conf.Ser.24:44-51,2005 | 10.1088/1742-6596/24/1/006 | null | gr-qc | null | After reviewing the covariant description of Hamiltonian dynamics, some
applications are done to the non-relativistic isotropic three-dimensional
harmonic oscillator, Rovelli's model, and SO(3,1) BF theories.
| [
{
"created": "Sun, 19 Feb 2006 21:55:56 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Montesinos",
"Merced",
""
]
] | After reviewing the covariant description of Hamiltonian dynamics, some applications are done to the non-relativistic isotropic three-dimensional harmonic oscillator, Rovelli's model, and SO(3,1) BF theories. |
1606.02532 | Luciano Rezzolla | Nigel T. Bishop and Luciano Rezzolla | Extraction of Gravitational Waves in Numerical Relativity | 110 pages, matches version accepted in Living Reviews of Relativity;
supplementary macro files available in the source tar | null | 10.1007/s41114-016-0001-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A numerical-relativity calculation yields in general a solution of the
Einstein equations including also a radiative part, which is in practice
computed in a region of finite extent. Since gravitational radiation is
properly defined only at null infinity and in an appropriate coordinate system,
the accurate estimatio... | [
{
"created": "Wed, 8 Jun 2016 12:52:50 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Jul 2016 18:36:42 GMT",
"version": "v2"
}
] | 2017-02-08 | [
[
"Bishop",
"Nigel T.",
""
],
[
"Rezzolla",
"Luciano",
""
]
] | A numerical-relativity calculation yields in general a solution of the Einstein equations including also a radiative part, which is in practice computed in a region of finite extent. Since gravitational radiation is properly defined only at null infinity and in an appropriate coordinate system, the accurate estimation ... |
2011.08377 | Manuel Gonzalez-Espinoza | Manuel Gonzalez-Espinoza and Giovanni Otalora | Cosmological dynamics of dark energy in scalar-torsion $f(T,\phi)$
gravity | Accepted version for publication in EPJC. 17 pages, 3 tables and 10
figures | null | 10.1140/epjc/s10052-021-09270-x | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is investigated the cosmological dynamics of scalar-torsion $f(T,\phi)$
gravity as a dark energy model, where $T$ is the torsion scalar of teleparallel
gravity and $\phi$ is a canonical scalar field. In this context, we are
concerned with the phenomenology of the class of models with non-linear
coupling to gravity... | [
{
"created": "Tue, 17 Nov 2020 02:32:21 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Nov 2020 20:36:27 GMT",
"version": "v2"
},
{
"created": "Sat, 30 Jan 2021 01:59:52 GMT",
"version": "v3"
},
{
"created": "Sun, 23 May 2021 18:01:40 GMT",
"version": "v4"
}
] | 2021-06-16 | [
[
"Gonzalez-Espinoza",
"Manuel",
""
],
[
"Otalora",
"Giovanni",
""
]
] | It is investigated the cosmological dynamics of scalar-torsion $f(T,\phi)$ gravity as a dark energy model, where $T$ is the torsion scalar of teleparallel gravity and $\phi$ is a canonical scalar field. In this context, we are concerned with the phenomenology of the class of models with non-linear coupling to gravity a... |
2311.15739 | Crist\'obal Laporte | Jesse Daas, Cristobal Laporte and Frank Saueressig | On the impact of perturbative counterterms on black holes | 7 pages, 2 figures, v2: some improvements and clarifications,
references added | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We determine the corrections to the Schwarzschild geometry arising from
including the Goroff- Sagnotti counterterm in the gravitational dynamics. We
find that static, asymptotically flat, and spherically symmetric geometries are
completely characterized by their asymptotic mass and the coupling associated
with the co... | [
{
"created": "Mon, 27 Nov 2023 11:44:17 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Feb 2024 09:27:20 GMT",
"version": "v2"
}
] | 2024-02-22 | [
[
"Daas",
"Jesse",
""
],
[
"Laporte",
"Cristobal",
""
],
[
"Saueressig",
"Frank",
""
]
] | We determine the corrections to the Schwarzschild geometry arising from including the Goroff- Sagnotti counterterm in the gravitational dynamics. We find that static, asymptotically flat, and spherically symmetric geometries are completely characterized by their asymptotic mass and the coupling associated with the coun... |
2308.10953 | Hongguang Liu | Kristina Giesel, Hongguang Liu, Parampreet Singh, Stefan Andreas Weigl | Generalized analysis of a dust collapse in effective loop quantum
gravity: fate of shocks and covariance | 25 pages,1 figure | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on modifications inspired from loop quantum gravity (LQG), spherically
symmetric models have recently been explored to understand the resolution of
classical singularities and the fate of the spacetime beyond. While such
phenomenological studies have provided useful insights, questions remain on
whether such mo... | [
{
"created": "Mon, 21 Aug 2023 18:00:13 GMT",
"version": "v1"
}
] | 2023-08-23 | [
[
"Giesel",
"Kristina",
""
],
[
"Liu",
"Hongguang",
""
],
[
"Singh",
"Parampreet",
""
],
[
"Weigl",
"Stefan Andreas",
""
]
] | Based on modifications inspired from loop quantum gravity (LQG), spherically symmetric models have recently been explored to understand the resolution of classical singularities and the fate of the spacetime beyond. While such phenomenological studies have provided useful insights, questions remain on whether such mode... |
0707.0273 | Viqar Husain | Viqar Husain, Jorma Louko, Oliver Winkler | Quantum gravity and the Coulomb potential | 10 pages, 5 figures. v2: Minor presentational changes. One data point
added in Table I | Phys.Rev.D76:084002,2007 | 10.1103/PhysRevD.76.084002 | null | gr-qc | null | We apply a singularity resolution technique utilized in loop quantum gravity
to the polymer representation of quantum mechanics on R with the singular
-1/|x| potential. On an equispaced lattice, the resulting eigenvalue problem is
identical to a finite difference approximation of the Schrodinger equation. We
find num... | [
{
"created": "Mon, 2 Jul 2007 16:54:36 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Oct 2007 07:39:05 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Husain",
"Viqar",
""
],
[
"Louko",
"Jorma",
""
],
[
"Winkler",
"Oliver",
""
]
] | We apply a singularity resolution technique utilized in loop quantum gravity to the polymer representation of quantum mechanics on R with the singular -1/|x| potential. On an equispaced lattice, the resulting eigenvalue problem is identical to a finite difference approximation of the Schrodinger equation. We find numer... |
2106.08202 | Cong Zhang | Cong Zhang | Reduced Phase Space Quantization of Black Holes: Path Integrals, and
Effective Dynamics | 26 pages, 6 figures, several key footnotes are added to clarify the
derivation | Physical Review D 104, 126003 (2021) | 10.1103/PhysRevD.104.126003 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider the loop quantum theory of the spherically symmetric model of
gravity coupled to Gaussian dust fields, where the Gaussian dust fields provide
a material reference frame of the space and time to deparameterize gravity.
This theory, used to study the quantum features of the spherically symmetric
black hole,... | [
{
"created": "Tue, 15 Jun 2021 15:00:19 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Sep 2021 10:30:37 GMT",
"version": "v2"
},
{
"created": "Wed, 24 Nov 2021 23:55:19 GMT",
"version": "v3"
},
{
"created": "Thu, 24 Feb 2022 06:45:00 GMT",
"version": "v4"
}
] | 2022-02-25 | [
[
"Zhang",
"Cong",
""
]
] | We consider the loop quantum theory of the spherically symmetric model of gravity coupled to Gaussian dust fields, where the Gaussian dust fields provide a material reference frame of the space and time to deparameterize gravity. This theory, used to study the quantum features of the spherically symmetric black hole, i... |
gr-qc/0405015 | Jan Broekaert | Jan Broekaert | A spatially-VSL gravity model with 1-PN limit of GRT | v1: 11 pages, GR17 conf. paper, Dublin 2004, v2: WEP issue solved,
section on acceleration transformation added, text improved, more references,
same results, v3: typos removed, footnotes, added and references updated, v4:
appendix added, improved text | Found.Phys.38:409-435,2008 | 10.1007/s10701-008-9210-8 | null | gr-qc | null | A scalar gravity model is developed according the 'geometric conventionalist'
approach introduced by Poincare (Einstein 1921, Poincare 1905, Reichenbach
1957, Gruenbaum1973). In principle this approach allows an alternative
interpretation and formulation of General Relativity Theory (GRT), with
distinct i) physical c... | [
{
"created": "Tue, 4 May 2004 00:39:27 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jul 2005 20:06:46 GMT",
"version": "v2"
},
{
"created": "Tue, 17 Jan 2006 09:26:30 GMT",
"version": "v3"
},
{
"created": "Mon, 10 Sep 2007 08:14:24 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Broekaert",
"Jan",
""
]
] | A scalar gravity model is developed according the 'geometric conventionalist' approach introduced by Poincare (Einstein 1921, Poincare 1905, Reichenbach 1957, Gruenbaum1973). In principle this approach allows an alternative interpretation and formulation of General Relativity Theory (GRT), with distinct i) physical con... |
0909.1688 | Ali Alavi | S. A. Alavi | Reissner-Nordstrom black hole in noncommutative spaces | 9 pages, accepted for publication in Acta Physica Polonica B | Acta Phys.Polon.B40:2679-2687,2009 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the behaviour of a non-commutative radiating
Reissner-Nordstrom(Re-No)black hole. We find some interesting results : a). the
existence of a minimal non-zero mass to which the black hole can shrink. b). a
finite maximum temperature that the black hole can reach before cooling down to
absolute zero. c) c... | [
{
"created": "Wed, 9 Sep 2009 12:12:06 GMT",
"version": "v1"
}
] | 2010-03-25 | [
[
"Alavi",
"S. A.",
""
]
] | We investigate the behaviour of a non-commutative radiating Reissner-Nordstrom(Re-No)black hole. We find some interesting results : a). the existence of a minimal non-zero mass to which the black hole can shrink. b). a finite maximum temperature that the black hole can reach before cooling down to absolute zero. c) com... |
1208.6217 | Javier Olmedo | Mikel Fern\'andez-M\'endez, Guillermo A. Mena Marug\'an and Javier
Olmedo | A complete hybrid quantization in inhomogeneous cosmology | 6 pages | AIP Conf. Proc. 1458, 507 (2012) | 10.1063/1.4734471 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A complete quantization of a homogeneous and isotropic spacetime with closed
spatial sections coupled to a massive scalar field is provided, within the
framework of Loop Quantum Cosmology. We identify solutions with their initial
data on the minimum volume section, and from this we construct the physical
Hilbert spac... | [
{
"created": "Thu, 30 Aug 2012 16:01:44 GMT",
"version": "v1"
}
] | 2012-08-31 | [
[
"Fernández-Méndez",
"Mikel",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
],
[
"Olmedo",
"Javier",
""
]
] | A complete quantization of a homogeneous and isotropic spacetime with closed spatial sections coupled to a massive scalar field is provided, within the framework of Loop Quantum Cosmology. We identify solutions with their initial data on the minimum volume section, and from this we construct the physical Hilbert space.... |
1809.08735 | Ryotaro Kase | Ryotaro Kase and Shinji Tsujikawa | Dark energy in Horndeski theories after GW170817: A review | 51 pages, 5 figures, published version | Int. J. Mod. Phys. D28 (2019) no.05, 1942005 | 10.1142/S0218271819420057 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational-wave event GW170817 from a binary neutron star merger
together with the electromagnetic counterpart showed that the speed of
gravitational waves $c_t$ is very close to that of light for the redshift
$z<0.009$. This places tight constraints on dark energy models constructed in
the framework of modifi... | [
{
"created": "Mon, 24 Sep 2018 03:05:05 GMT",
"version": "v1"
},
{
"created": "Mon, 6 May 2019 04:31:22 GMT",
"version": "v2"
}
] | 2019-05-07 | [
[
"Kase",
"Ryotaro",
""
],
[
"Tsujikawa",
"Shinji",
""
]
] | The gravitational-wave event GW170817 from a binary neutron star merger together with the electromagnetic counterpart showed that the speed of gravitational waves $c_t$ is very close to that of light for the redshift $z<0.009$. This places tight constraints on dark energy models constructed in the framework of modified... |
2205.14743 | Shauvik Biswas | Shauvik Biswas, Mostafizur Rahman, Sumanta Chakraborty | Echoes from braneworld wormholes | 32 Pages, 15 Figures | null | 10.1103/PhysRevD.106.124003 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We have studied the stability of wormhole geometries, under massless scalar,
electromagnetic and axial gravitational perturbations, in the context of higher
dimensional spacetimes. Intriguingly, the construction of a wormhole spacetime
in the presence of higher dimensions, known as braneworld wormholes, \emph{does
no... | [
{
"created": "Sun, 29 May 2022 19:31:49 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Dec 2022 17:44:47 GMT",
"version": "v2"
}
] | 2022-12-13 | [
[
"Biswas",
"Shauvik",
""
],
[
"Rahman",
"Mostafizur",
""
],
[
"Chakraborty",
"Sumanta",
""
]
] | We have studied the stability of wormhole geometries, under massless scalar, electromagnetic and axial gravitational perturbations, in the context of higher dimensional spacetimes. Intriguingly, the construction of a wormhole spacetime in the presence of higher dimensions, known as braneworld wormholes, \emph{does not}... |
1801.04679 | Alexander Zakharov | A. F. Zakharov, P. Jovanovic, D. Borka and V. Borka Jovanovic | Constraining the range of Yukawa gravity interaction from S2 star orbits
III: improvement expectations for graviton mass bounds | 16 pages, 1 Figure, 1 Table, corrected minor typos | JCAP04(2018)050 | 10.1088/1475-7516/2018/04/050 | null | gr-qc astro-ph.CO astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, the LIGO-Virgo collaboration discovered gravitational waves and in
their first publication on the subject the authors also presented a graviton
mass constraint as $m_g < 1.2 \times 10^{-22}$ eV (Abbott et al., 2016).
In the paper we analyze a potential to reduce upper bounds for graviton mass
with future ... | [
{
"created": "Mon, 15 Jan 2018 07:07:32 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jan 2018 06:33:29 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Feb 2018 12:37:32 GMT",
"version": "v3"
},
{
"created": "Fri, 27 Apr 2018 07:06:01 GMT",
"version": "v4"
}
] | 2018-04-30 | [
[
"Zakharov",
"A. F.",
""
],
[
"Jovanovic",
"P.",
""
],
[
"Borka",
"D.",
""
],
[
"Jovanovic",
"V. Borka",
""
]
] | Recently, the LIGO-Virgo collaboration discovered gravitational waves and in their first publication on the subject the authors also presented a graviton mass constraint as $m_g < 1.2 \times 10^{-22}$ eV (Abbott et al., 2016). In the paper we analyze a potential to reduce upper bounds for graviton mass with future obse... |
gr-qc/0208039 | Diego F. Torres | Margarita Safonova, and Diego F. Torres | Degeneracy in exotic gravitational lensing | Accepted for publication in Modern Physics Letters A | Mod.Phys.Lett. A17 (2002) 1685-1692 | 10.1142/S0217732302008083 | null | gr-qc | null | We present three different theoretically foreseen, but unusual, astrophysical
situations where the gravitational lens equation ends up being the same, thus
producing a degeneracy problem. These situations are (a) the case of
gravitational lensing by exotic stresses (matter violating the weak energy
condition and thus... | [
{
"created": "Wed, 14 Aug 2002 21:01:11 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Safonova",
"Margarita",
""
],
[
"Torres",
"Diego F.",
""
]
] | We present three different theoretically foreseen, but unusual, astrophysical situations where the gravitational lens equation ends up being the same, thus producing a degeneracy problem. These situations are (a) the case of gravitational lensing by exotic stresses (matter violating the weak energy condition and thus h... |
2010.03314 | Shuxun Tian | S. X. Tian | Cosmological consequences of a scalar field with oscillating equation of
state. II. Oscillating scaling and chaotic accelerating solutions | 7 pages, 5 figures, and 1 table. Published in Phys. Rev. D | Phys. Rev. D 102, 063509 (2020) | 10.1103/PhysRevD.102.063509 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Multiacceleration scenario can be used to solve the cosmological coincidence
problem. In this paper, after considering the early radiation era, we revisit
the cosmological dynamics of the oscillating dark energy model proposed in
[https://doi.org/10.1103/PhysRevD.101.063531, Phys. Rev. D {\bf 101}, 063531
(2020)]. We... | [
{
"created": "Wed, 7 Oct 2020 10:20:49 GMT",
"version": "v1"
}
] | 2020-10-08 | [
[
"Tian",
"S. X.",
""
]
] | Multiacceleration scenario can be used to solve the cosmological coincidence problem. In this paper, after considering the early radiation era, we revisit the cosmological dynamics of the oscillating dark energy model proposed in [https://doi.org/10.1103/PhysRevD.101.063531, Phys. Rev. D {\bf 101}, 063531 (2020)]. We f... |
1512.08192 | Cristina Blaga | Cristina Blaga | Stability in sense of Lyapunov of circular orbits in Manev potential | 8 pages | Romanian Astron. J., vol. 25(3), pages 233-240, 2015 | null | null | gr-qc astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we consider the motion of two bodies under the action of a
Manev central force. We obtain the radius of the circular orbit and analyze its
stability in sense of Lyapunov. Drawn on the first integrals of angular
momentum and energy, we build a positive definite function which satisfies the
Lyapunov's t... | [
{
"created": "Sun, 27 Dec 2015 09:48:09 GMT",
"version": "v1"
}
] | 2015-12-29 | [
[
"Blaga",
"Cristina",
""
]
] | In this article we consider the motion of two bodies under the action of a Manev central force. We obtain the radius of the circular orbit and analyze its stability in sense of Lyapunov. Drawn on the first integrals of angular momentum and energy, we build a positive definite function which satisfies the Lyapunov's the... |
1709.03786 | Emil Nissimov | Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva | Quintessence in Multi-Measure Generalized Gravity Stabilized by
Gauss-Bonnet/Inflaton Coupling | Contribution to the Proceedings of Bahamas Advanced Study Institute
Conference 2017, to appear in Bulgarian Journal of Physics; v.2 - header of
page 1 changed to match the title of the Conference and citation added; v.3
LaTeX errors corrected | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a non-standard generalized model of gravity coupled to a neutral
scalar "inflaton" as well as to the fields of the electroweak bosonic sector.
The essential new ingredient is employing two alternative non-Riemannian
space-time volume-forms (non-Riemannian volume elements, or covariant
integration measure ... | [
{
"created": "Tue, 12 Sep 2017 11:27:57 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Sep 2017 11:16:13 GMT",
"version": "v2"
},
{
"created": "Fri, 15 Sep 2017 11:59:04 GMT",
"version": "v3"
}
] | 2017-09-18 | [
[
"Guendelman",
"Eduardo",
""
],
[
"Nissimov",
"Emil",
""
],
[
"Pacheva",
"Svetlana",
""
]
] | We consider a non-standard generalized model of gravity coupled to a neutral scalar "inflaton" as well as to the fields of the electroweak bosonic sector. The essential new ingredient is employing two alternative non-Riemannian space-time volume-forms (non-Riemannian volume elements, or covariant integration measure de... |
2107.05116 | Sudipta Hensh | Sudipta Hensh, Stefano Liberati | Raychaudhuri equations and gravitational collapse in Einstein-Cartan
theory | null | Phys. Rev. D, Vol. 104, No. 8, 084073, 20 October 2021 | 10.1103/PhysRevD.104.084073 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The Raychaudhuri equations for the expansion, shear and vorticity are
generalized in a spacetime with torsion for timelike as well as null
congruences. These equations are purely geometrical like the original
Raychaudhuri equations and could be reduced to them when there is no torsion.
Using the Einstein-Cartan-Sciam... | [
{
"created": "Sun, 11 Jul 2021 19:07:41 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Oct 2021 21:49:30 GMT",
"version": "v2"
}
] | 2021-10-27 | [
[
"Hensh",
"Sudipta",
""
],
[
"Liberati",
"Stefano",
""
]
] | The Raychaudhuri equations for the expansion, shear and vorticity are generalized in a spacetime with torsion for timelike as well as null congruences. These equations are purely geometrical like the original Raychaudhuri equations and could be reduced to them when there is no torsion. Using the Einstein-Cartan-Sciama-... |
1509.07005 | Filip Ficek | Filip Ficek | Bondi-type accretion in the Reissner-Nordstr\"om-(anti-)de Sitter
spacetime | 16 pages, 6 figures, to appear in Classical and Quantum Gravity | Class. Quantum Grav. 32 235008 (2015) | 10.1088/0264-9381/32/23/235008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper I study stationary, spherically symmetric accretion of fluids
onto a charged black hole in the presence of the cosmological constant. For
some isothermal equations of state it is possible to obtain analytic solutions.
In the case of a radiation fluid I point out a connection between locations of
the hor... | [
{
"created": "Wed, 23 Sep 2015 14:25:02 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Oct 2015 10:17:07 GMT",
"version": "v2"
}
] | 2015-11-10 | [
[
"Ficek",
"Filip",
""
]
] | In this paper I study stationary, spherically symmetric accretion of fluids onto a charged black hole in the presence of the cosmological constant. For some isothermal equations of state it is possible to obtain analytic solutions. In the case of a radiation fluid I point out a connection between locations of the horiz... |
2112.08019 | Washington Chagas-Filho | W. F. Chagas-Filho | Black Holes, Gravitational Waves and Quantum Gravity | 16 pages | Physical Science International Journal 25(9):1-11, 2021 | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Loop Quantum Gravity is a theory that attempts to describe the quantum
mechanics of the gravitational field based on the canonical quantization of
General Relativity. According to Loop Quantum Gravity, in a gravitational
field, geometric quantities such as area and volume are quantized in terms of
the Planck lenth. I... | [
{
"created": "Wed, 15 Dec 2021 10:36:13 GMT",
"version": "v1"
}
] | 2021-12-16 | [
[
"Chagas-Filho",
"W. F.",
""
]
] | Loop Quantum Gravity is a theory that attempts to describe the quantum mechanics of the gravitational field based on the canonical quantization of General Relativity. According to Loop Quantum Gravity, in a gravitational field, geometric quantities such as area and volume are quantized in terms of the Planck lenth. In ... |
gr-qc/9501021 | null | M. Tsuda, T. Shirafuji and H.-J. Xie | Ashtekar Variables and Matter Coupling | 9 pages, latex | null | null | STUPP-95-138 | gr-qc | null | It has been shown for low-spin fields that the use of only the self-dual part
of the connection as basic variable does not lead to spurious equations or
inconsistencies. We slightly generalize the form of the chiral Lagrangian of
half-integer spin fields and express its imaginary part in a simple form. If
the imagina... | [
{
"created": "Fri, 20 Jan 1995 05:59:25 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Tsuda",
"M.",
""
],
[
"Shirafuji",
"T.",
""
],
[
"Xie",
"H. -J.",
""
]
] | It has been shown for low-spin fields that the use of only the self-dual part of the connection as basic variable does not lead to spurious equations or inconsistencies. We slightly generalize the form of the chiral Lagrangian of half-integer spin fields and express its imaginary part in a simple form. If the imaginary... |
2111.03038 | Jakub Mielczarek Ph.D. | Grzegorz Czelusta, Jakub Mielczarek | Quantum variational solving of the Wheeler-DeWitt equation | 15 pages | null | 10.1103/PhysRevD.105.126005 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the central difficulties in the quantization of the gravitational
interactions is that they are described by a set of constraints. The standard
strategy for dealing with the problem is the Dirac quantization procedure,
which leads to the Wheeler-DeWitt equation. However, solutions to the equation
are known onl... | [
{
"created": "Thu, 4 Nov 2021 17:44:49 GMT",
"version": "v1"
}
] | 2022-06-15 | [
[
"Czelusta",
"Grzegorz",
""
],
[
"Mielczarek",
"Jakub",
""
]
] | One of the central difficulties in the quantization of the gravitational interactions is that they are described by a set of constraints. The standard strategy for dealing with the problem is the Dirac quantization procedure, which leads to the Wheeler-DeWitt equation. However, solutions to the equation are known only ... |
1003.2061 | D. Petroff | Norman G\"urlebeck and David Petroff | Non-axisymmetric configurations in the post-Newtonian Approximation to
General Relativity | 3 pages, no figures, contribution to the 12th Marcel Grossmann
Meeting (Paris, July 12 - 18, 2009), submitted to the Conference Proceedings,
v2: minor changes | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use surface adapted ellipsoidal coordinates to obtain a first order
post-Newtonian (PN) approximation to Dedekind ellipsoids with the intention of
proceeding to higher orders.
| [
{
"created": "Wed, 10 Mar 2010 09:50:25 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Mar 2010 14:02:06 GMT",
"version": "v2"
}
] | 2010-03-12 | [
[
"Gürlebeck",
"Norman",
""
],
[
"Petroff",
"David",
""
]
] | We use surface adapted ellipsoidal coordinates to obtain a first order post-Newtonian (PN) approximation to Dedekind ellipsoids with the intention of proceeding to higher orders. |
gr-qc/9810009 | Ivan S. N. Booth | I.S. Booth and R.B. Mann | Moving Observers, Non-orthogonal Boundaries, and Quasilocal Energies | 19 pages, 1 postscript figure, minor typos fixed, references updated,
to appear PRD | Phys.Rev.D59:064021,1999 | 10.1103/PhysRevD.59.064021 | null | gr-qc | null | The popular Hamilton-Jacobi method first proposed by Brown and York for
defining quasilocal quantities such as energy for spatially bound regions
assumes that the spatial boundary is orthogonal to the foliation of the
spacetime. Such a restriction is undesirable for both theoretical and
computational reasons. We remo... | [
{
"created": "Fri, 2 Oct 1998 23:47:18 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Feb 1999 19:02:27 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"Booth",
"I. S.",
""
],
[
"Mann",
"R. B.",
""
]
] | The popular Hamilton-Jacobi method first proposed by Brown and York for defining quasilocal quantities such as energy for spatially bound regions assumes that the spatial boundary is orthogonal to the foliation of the spacetime. Such a restriction is undesirable for both theoretical and computational reasons. We remove... |
1503.07857 | Manuel Rodrigues | Ednaldo L. B. Junior, Manuel E. Rodrigues and Mahouton J. S. Houndjo | Regular black holes in $f(T)$ Gravity through a nonlinear
electrodynamics source | 16 pages, 6 figures | JCAP10(2015)060 | 10.1088/1475-7516/2015/10/060 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We seek to obtain a new class of exact solutions of regular black holes in
$f(T)$ Gravity with non-linear electrodynamics material content, with spherical
symmetry in $4D$. The equations of motion provide the regaining of various
solutions of General Relativity, as a particular case where the function
$f(T)=T$. We de... | [
{
"created": "Thu, 26 Mar 2015 00:52:57 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Oct 2015 17:15:51 GMT",
"version": "v2"
}
] | 2015-11-02 | [
[
"Junior",
"Ednaldo L. B.",
""
],
[
"Rodrigues",
"Manuel E.",
""
],
[
"Houndjo",
"Mahouton J. S.",
""
]
] | We seek to obtain a new class of exact solutions of regular black holes in $f(T)$ Gravity with non-linear electrodynamics material content, with spherical symmetry in $4D$. The equations of motion provide the regaining of various solutions of General Relativity, as a particular case where the function $f(T)=T$. We deve... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.