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/0605088 | David Garfinkle | David Garfinkle | Inhomogeneous spacetimes as a dark energy model | 9 pages, 6 figures, Added References | Class.Quant.Grav. 23 (2006) 4811-4818 | 10.1088/0264-9381/23/15/002 | null | gr-qc astro-ph | null | Tolman-Bondi inhomogeneous spacetimes are used as a cosmological model for
type Ia supernova data. It is found that with certain parameter choices the
model fits the data as well as the standard $\Lambda$CDM cosmology does.
| [
{
"created": "Mon, 15 May 2006 16:44:24 GMT",
"version": "v1"
},
{
"created": "Mon, 22 May 2006 12:01:50 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Garfinkle",
"David",
""
]
] | Tolman-Bondi inhomogeneous spacetimes are used as a cosmological model for type Ia supernova data. It is found that with certain parameter choices the model fits the data as well as the standard $\Lambda$CDM cosmology does. |
gr-qc/0507040 | Igor Pe\~na | I. Pe\~na, C. Chryssomalakos, A. Corichi and D. Sudarsky | On the puzzle of Bremsstrahlung as described by coaccelerated observers | 29 pages, 1 figure; Revtex, minor changes, PACS corrected | Phys.Rev. D72 (2005) 084018 | 10.1103/PhysRevD.72.084018 | null | gr-qc hep-th | null | We consider anew some puzzling aspects of the equivalence of the quantum
field theoretical description of Bremsstrahlung from the inertial and
accelerated observer's perspectives. More concretely, we focus on the seemingly
paradoxical situation that arises when noting that the radiating source is in
thermal equilibri... | [
{
"created": "Sat, 9 Jul 2005 01:30:41 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jul 2005 19:43:36 GMT",
"version": "v2"
}
] | 2016-08-16 | [
[
"Peña",
"I.",
""
],
[
"Chryssomalakos",
"C.",
""
],
[
"Corichi",
"A.",
""
],
[
"Sudarsky",
"D.",
""
]
] | We consider anew some puzzling aspects of the equivalence of the quantum field theoretical description of Bremsstrahlung from the inertial and accelerated observer's perspectives. More concretely, we focus on the seemingly paradoxical situation that arises when noting that the radiating source is in thermal equilibrium... |
gr-qc/0312098 | Sugumi Kanno | Sugumi Kanno, Jiro Soda | Effective Teukolsky Equation on the Brane | 2 pages, contribution to the Proceedings of the 6th RESCEU
International Symposium, Tokyo | null | null | null | gr-qc | null | To estimate Kaluza-Klein (KK) corrections on gravitational waves emitted by
perturbed rotating black strings, we give the effective Teukolsky equation on
the brane which is separable equation and hence numerically manageable.
| [
{
"created": "Mon, 22 Dec 2003 06:48:59 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kanno",
"Sugumi",
""
],
[
"Soda",
"Jiro",
""
]
] | To estimate Kaluza-Klein (KK) corrections on gravitational waves emitted by perturbed rotating black strings, we give the effective Teukolsky equation on the brane which is separable equation and hence numerically manageable. |
0801.4942 | Sergiu Vacaru I. | Sergiu I. Vacaru | Loop Quantum Gravity in Ashtekar and Lagrange-Finsler Variables and
Fedosov Quantization of General Relativity | latex 2e, 11pt, 48 pages, 1 latex figure, discussion added | The Icfai Univ. J. Physics, 2 (2009) issue 4 | null | null | gr-qc hep-th math-ph math.MP | null | We propose an unified approach to loop quantum gravity and Fedosov
quantization of gravity following the geometry of double spacetime fibrations
and their quantum deformations. There are considered pseudo-Riemannian
manifolds enabled with 1) a nonholonomic 2+2 distribution defining a nonlinear
connection (N-connectio... | [
{
"created": "Thu, 31 Jan 2008 18:30:15 GMT",
"version": "v1"
},
{
"created": "Sun, 10 Feb 2008 00:24:16 GMT",
"version": "v2"
}
] | 2009-11-21 | [
[
"Vacaru",
"Sergiu I.",
""
]
] | We propose an unified approach to loop quantum gravity and Fedosov quantization of gravity following the geometry of double spacetime fibrations and their quantum deformations. There are considered pseudo-Riemannian manifolds enabled with 1) a nonholonomic 2+2 distribution defining a nonlinear connection (N-connection)... |
0710.3808 | Andrew Lundgren | Andrew P. Lundgren, Ruxandra Bondarescu, David Tsang, Mihai Bondarescu | Finite Mirror Effects in Advanced Interferometric Gravitational Wave
Detectors | 13 pages, 12 figures, 4 tables. Referee input included and typos
fixed. Accepted by Phys. Rev. D | Phys.Rev.D77:042003,2008 | 10.1103/PhysRevD.77.042003 | null | gr-qc | null | Thermal noise is expected to be the dominant source of noise in the most
sensitive frequency band of second generation ground based gravitational wave
detectors. Reshaping the beam to a flatter wider profile which probes more of
the mirror surface reduces this noise. The "Mesa" beam shape has been proposed
for this p... | [
{
"created": "Sun, 21 Oct 2007 21:40:16 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Dec 2007 21:19:04 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Lundgren",
"Andrew P.",
""
],
[
"Bondarescu",
"Ruxandra",
""
],
[
"Tsang",
"David",
""
],
[
"Bondarescu",
"Mihai",
""
]
] | Thermal noise is expected to be the dominant source of noise in the most sensitive frequency band of second generation ground based gravitational wave detectors. Reshaping the beam to a flatter wider profile which probes more of the mirror surface reduces this noise. The "Mesa" beam shape has been proposed for this pur... |
gr-qc/0609046 | Hideaki Kudoh | Umpei Miyamoto and Hideaki Kudoh | New stable phase of non-uniform charged black strings | 27 pages, 5 figures, references and minor comments are added | JHEP0612:048,2006 | 10.1088/1126-6708/2006/12/048 | null | gr-qc hep-th | null | Non-uniform black strings coupled to a gauge field are constructed by a
perturbative method in a wide range of spacetime dimensions. At the linear
order of perturbations, we see that the Gregory-Laflamme instability vanishes
at the point where the background solution becomes thermodynamically stable.
The emergence/va... | [
{
"created": "Wed, 13 Sep 2006 20:00:33 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Nov 2006 10:34:45 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Miyamoto",
"Umpei",
""
],
[
"Kudoh",
"Hideaki",
""
]
] | Non-uniform black strings coupled to a gauge field are constructed by a perturbative method in a wide range of spacetime dimensions. At the linear order of perturbations, we see that the Gregory-Laflamme instability vanishes at the point where the background solution becomes thermodynamically stable. The emergence/vani... |
1703.10234 | Allen Stern | B. Harms and A. Stern | Growing Hair on the extremal $BTZ$ black hole | 11 pages, 1 figure, minor corrections included | null | 10.1016/j.physletb.2017.04.021 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the nonlinear $\sigma-$model in an asymptotically $AdS_3$
space-time admits a novel local symmetry. The field action is assumed to be
quartic in the nonlinear $\sigma-$model fields and minimally coupled to
gravity. The local symmetry transformation simultaneously twists the nonlinear
$\sigma-$model field... | [
{
"created": "Wed, 29 Mar 2017 20:21:58 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Apr 2017 17:08:26 GMT",
"version": "v2"
}
] | 2017-04-26 | [
[
"Harms",
"B.",
""
],
[
"Stern",
"A.",
""
]
] | We show that the nonlinear $\sigma-$model in an asymptotically $AdS_3$ space-time admits a novel local symmetry. The field action is assumed to be quartic in the nonlinear $\sigma-$model fields and minimally coupled to gravity. The local symmetry transformation simultaneously twists the nonlinear $\sigma-$model fields ... |
1207.4879 | Junko Ohashi | Junko Ohashi and Shinji Tsujikawa | Potential-driven Galileon inflation | 22 pages, 15 figures | JCAP 1210 (2012) 035 | 10.1088/1475-7516/2012/10/035 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For the models of inflation driven by the potential energy of an inflaton
field $\phi$, the covariant Galileon Lagrangian $(\partial\phi)^2\Box \phi$
generally works to slow down the evolution of the field. On the other hand, if
the Galileon self-interaction is dominant relative to the standard kinetic
term, we show ... | [
{
"created": "Fri, 20 Jul 2012 08:52:23 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Oct 2012 10:41:58 GMT",
"version": "v2"
}
] | 2013-01-29 | [
[
"Ohashi",
"Junko",
""
],
[
"Tsujikawa",
"Shinji",
""
]
] | For the models of inflation driven by the potential energy of an inflaton field $\phi$, the covariant Galileon Lagrangian $(\partial\phi)^2\Box \phi$ generally works to slow down the evolution of the field. On the other hand, if the Galileon self-interaction is dominant relative to the standard kinetic term, we show th... |
1410.1813 | Massimo Tinto | Massimo Tinto, Daniel DeBra, Sasha Buchman, Scott Tilley | gLISA: geosynchronous Laser Interferometer Space Antenna concepts with
off-the-shelf satellites | Paper submitted for publication to the journal: "Review of Scientific
Instruments". It is 13 pages long and contains 2 figures | null | 10.1063/1.4904862 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss two geosynchronous gravitational wave mission concepts, which we
generically name gLISA. One relies on the science instrument hosting program
onboard geostationary commercial satellites, while the other takes advantage of
recent developments in the aerospace industry that result in dramatic satellite
and l... | [
{
"created": "Tue, 7 Oct 2014 17:39:44 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Tinto",
"Massimo",
""
],
[
"DeBra",
"Daniel",
""
],
[
"Buchman",
"Sasha",
""
],
[
"Tilley",
"Scott",
""
]
] | We discuss two geosynchronous gravitational wave mission concepts, which we generically name gLISA. One relies on the science instrument hosting program onboard geostationary commercial satellites, while the other takes advantage of recent developments in the aerospace industry that result in dramatic satellite and lau... |
0905.3292 | Thomas B\"ackdahl | Thomas B\"ackdahl | Relating the Newman-Penrose constants to the Geroch-Hansen multipole
moments | 8 pages, added references | Class.Quant.Grav.26:175021,2009 | 10.1088/0264-9381/26/17/175021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we express the Newman--Penrose constants in terms of the
Geroch--Hansen multipole moments for stationary spacetimes. These expressions
are translation-invariant combinations of the multipole moments up to
quadrupole order, which do not normally vanish.
| [
{
"created": "Wed, 20 May 2009 12:55:59 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Aug 2009 12:31:41 GMT",
"version": "v2"
}
] | 2009-09-28 | [
[
"Bäckdahl",
"Thomas",
""
]
] | In this paper, we express the Newman--Penrose constants in terms of the Geroch--Hansen multipole moments for stationary spacetimes. These expressions are translation-invariant combinations of the multipole moments up to quadrupole order, which do not normally vanish. |
2104.13649 | Andronikos Paliathanasis | Alex Giacomini, Esteban Gonz\'alez, Genly Leon and Andronikos
Paliathanasis | Variational symmetries and superintegrability in multifield cosmology | 34 pages, 13 figures, 2 tables | null | 10.1103/PhysRevD.105.044010 | null | gr-qc hep-ph math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We consider a spatially flat Friedmann--Lema\^{\i}tre--Robertson--Walker
background space with an ideal gas and a multifield Lagrangian consisting of
two minimally coupled scalar fields which evolve in a field space of constant
curvature. For this cosmological model we classify the potential function for
the scalar f... | [
{
"created": "Wed, 28 Apr 2021 09:12:49 GMT",
"version": "v1"
}
] | 2022-02-23 | [
[
"Giacomini",
"Alex",
""
],
[
"González",
"Esteban",
""
],
[
"Leon",
"Genly",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | We consider a spatially flat Friedmann--Lema\^{\i}tre--Robertson--Walker background space with an ideal gas and a multifield Lagrangian consisting of two minimally coupled scalar fields which evolve in a field space of constant curvature. For this cosmological model we classify the potential function for the scalar fie... |
gr-qc/9512013 | Szabados Laszlo | Laszlo B Szabados | Quasi-local energy-momentum and two-surface characterization of the
pp-wave spacetimes | 15 pages, Plain Tex, no figures | Class.Quant.Grav. 13 (1996) 1661-1678 | 10.1088/0264-9381/13/6/028 | -- | gr-qc | null | In the present paper the determination of the {\it pp}-wave metric form the
geometry of certain spacelike two-surfaces is considered. It has been shown
that the vanishing of the Dougan--Mason quasi-local mass $m_{\$}$, associated
with the smooth boundary $\$:=\partial\Sigma\approx S^2$ of a spacelike
hypersurface $\S... | [
{
"created": "Wed, 6 Dec 1995 16:12:36 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Szabados",
"Laszlo B",
""
]
] | In the present paper the determination of the {\it pp}-wave metric form the geometry of certain spacelike two-surfaces is considered. It has been shown that the vanishing of the Dougan--Mason quasi-local mass $m_{\$}$, associated with the smooth boundary $\$:=\partial\Sigma\approx S^2$ of a spacelike hypersurface $\Sig... |
1608.06218 | Paul Jefremov I. | Paul Jefremov and Volker Perlick | Circular motion in NUT space-time | 25 pages, 9 figures | Class. Quantum Grav. 33, 245014 (2016) | 10.1088/0264-9381/33/24/245014 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider circular motion in the NUT (Newman-Unti-Tamburino) space-time.
Among other things, we determine the location of circular time-like geodesic
orbits, in particular of the innermost stable circular orbit (ISCO) and of the
marginally bound circular orbit. Moreover, we discuss the von Zeipel cylinders
with res... | [
{
"created": "Thu, 18 Aug 2016 10:51:54 GMT",
"version": "v1"
}
] | 2017-05-09 | [
[
"Jefremov",
"Paul",
""
],
[
"Perlick",
"Volker",
""
]
] | We consider circular motion in the NUT (Newman-Unti-Tamburino) space-time. Among other things, we determine the location of circular time-like geodesic orbits, in particular of the innermost stable circular orbit (ISCO) and of the marginally bound circular orbit. Moreover, we discuss the von Zeipel cylinders with respe... |
1701.01836 | Alexey Golovnev | Alexey Golovnev, Fedor Smirnov | Dealing with ghost-free massive gravity without explicit square roots of
matrices | 7 pages; minor changes, a few references added | Physics Letters B 770 (2017), 209 - 212 | 10.1016/j.physletb.2017.04.058 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we entertain a simple idea that the action of ghost free
massive gravity (in metric formulation) depends not on the full structure of
the square root of a matrix but rather on its invariants given by elementary
symmetric polynomials of the eigenvalues. In particular, we show how one can
construct the qu... | [
{
"created": "Sat, 7 Jan 2017 14:28:18 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Jan 2017 15:31:25 GMT",
"version": "v2"
},
{
"created": "Fri, 21 Apr 2017 20:30:41 GMT",
"version": "v3"
}
] | 2017-06-15 | [
[
"Golovnev",
"Alexey",
""
],
[
"Smirnov",
"Fedor",
""
]
] | In this paper we entertain a simple idea that the action of ghost free massive gravity (in metric formulation) depends not on the full structure of the square root of a matrix but rather on its invariants given by elementary symmetric polynomials of the eigenvalues. In particular, we show how one can construct the quad... |
1712.07574 | Khalid Saifullah | Jamil Ahmed and K. Saifullah | Greybody factor of scalar fields from black strings | null | Eur. Phys. J. C (2017) 77: 885 | 10.1140/epjc/s10052-017-5449-6 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The greybody factor of massless, uncharged scalar fields is studied in the
background of cylindrically symmetric spacetimes, in the low-energy
approximation. We discuss two cases. In the first case we derive analytical
expression for the absorption probability when the spacetime is kinetically
coupled with the Einste... | [
{
"created": "Wed, 20 Dec 2017 16:49:45 GMT",
"version": "v1"
}
] | 2018-01-17 | [
[
"Ahmed",
"Jamil",
""
],
[
"Saifullah",
"K.",
""
]
] | The greybody factor of massless, uncharged scalar fields is studied in the background of cylindrically symmetric spacetimes, in the low-energy approximation. We discuss two cases. In the first case we derive analytical expression for the absorption probability when the spacetime is kinetically coupled with the Einstein... |
1705.07515 | Michele Levi | Michele Levi | Effective Field Theory of Post-Newtonian Gravity Including Spins | 5 pages, published | Proceedings of the 52nd Rencontres de Moriond 2017 Gravitation
(2017) 263 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present in detail an Effective Field Theory (EFT) formulation for the
essential case of spinning objects as the components of inspiralling compact
binaries. We review its implementation, carried out in a series of works in
recent years, which leveled the high post-Newtonian (PN) accuracy in the
spinning sector to ... | [
{
"created": "Sun, 21 May 2017 22:20:47 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Nov 2017 15:11:30 GMT",
"version": "v2"
},
{
"created": "Wed, 26 Sep 2018 00:54:33 GMT",
"version": "v3"
}
] | 2018-09-27 | [
[
"Levi",
"Michele",
""
]
] | We present in detail an Effective Field Theory (EFT) formulation for the essential case of spinning objects as the components of inspiralling compact binaries. We review its implementation, carried out in a series of works in recent years, which leveled the high post-Newtonian (PN) accuracy in the spinning sector to th... |
1603.08180 | Francisco Lobo | Francisco Cabral and Francisco S. N. Lobo | Electrodynamics and spacetime geometry: Astrophysical applications | 20 pages. Applications of the general formalism developed in
arXiv:1602.01492. V2: typos corrected and references added. V3: 15 pages;
revised version to appear in The European Physical Journal Plus | Eur. Phys. J. Plus (2017) 132: 304 | 10.1140/epjp/i2017-11618-2 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | After a brief review of the foundations of (pre-metric) electromagnetism, we
explore some physical consequences of electrodynamics in curved spacetime. In
general, new electromagnetic couplings and related phenomena are induced by the
spacetime curvature. The applications of astrophysical interest considered here
cor... | [
{
"created": "Sun, 27 Mar 2016 06:33:43 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Apr 2016 16:00:56 GMT",
"version": "v2"
},
{
"created": "Thu, 1 Jun 2017 16:27:26 GMT",
"version": "v3"
}
] | 2017-07-11 | [
[
"Cabral",
"Francisco",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | After a brief review of the foundations of (pre-metric) electromagnetism, we explore some physical consequences of electrodynamics in curved spacetime. In general, new electromagnetic couplings and related phenomena are induced by the spacetime curvature. The applications of astrophysical interest considered here corre... |
1901.01176 | Alberto Saa | Hengameh R. Dehkordi and Alberto Saa | Huygens' envelope principle in Finsler spaces and analogue gravity | 17 pages, 3 figures. Final version accepted for publication in CQG.
Animations in Supplementary Material available at
http://vigo.ime.unicamp.br/Huygens/ | Class. Quantum Grav. 36, 085008 (2019) | 10.1088/1361-6382/ab0f03 | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend to the $n$-dimensional case a recent theorem establishing the
validity of the Huygens' envelope principle for wavefronts in Finsler spaces.
Our results have direct applications in analogue gravity models, for which the
Fermat's principle of least time naturally gives origin to an underlying
Finslerian geome... | [
{
"created": "Fri, 4 Jan 2019 15:31:48 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Mar 2019 16:16:00 GMT",
"version": "v2"
}
] | 2019-04-04 | [
[
"Dehkordi",
"Hengameh R.",
""
],
[
"Saa",
"Alberto",
""
]
] | We extend to the $n$-dimensional case a recent theorem establishing the validity of the Huygens' envelope principle for wavefronts in Finsler spaces. Our results have direct applications in analogue gravity models, for which the Fermat's principle of least time naturally gives origin to an underlying Finslerian geometr... |
2002.11658 | Marco de Cesare | Marco de Cesare, Sanjeev S. Seahra, Edward Wilson-Ewing | The singularity in mimetic Kantowski-Sachs cosmology | 24 pages + appendices and references, 10 figures; v2: matches version
accepted for publication in JCAP | JCAP 07 (2020) 018 | 10.1088/1475-7516/2020/07/018 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dynamics of the vacuum Kantowski-Sachs space-time are studied in the
so-called limiting curvature mimetic gravity theory. It is shown that in this
theory the vacuum Kantowski-Sachs space-time is always singular. While the
departures from general relativity due to the limiting curvature mimetic theory
do provide a... | [
{
"created": "Wed, 26 Feb 2020 17:37:26 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Jun 2020 00:14:03 GMT",
"version": "v2"
}
] | 2020-07-08 | [
[
"de Cesare",
"Marco",
""
],
[
"Seahra",
"Sanjeev S.",
""
],
[
"Wilson-Ewing",
"Edward",
""
]
] | The dynamics of the vacuum Kantowski-Sachs space-time are studied in the so-called limiting curvature mimetic gravity theory. It is shown that in this theory the vacuum Kantowski-Sachs space-time is always singular. While the departures from general relativity due to the limiting curvature mimetic theory do provide an ... |
2406.11724 | Tieguang Zi | Tieguang Zi and Chao Zhang | Detecting the massive vector field with extreme mass-ratio inspirals | 14 pages,5 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | The future space-borne gravitational wave detector, Laser Interferometer
Space Antenna (LISA), has the potential of detecting the fundamental fields,
such as the charge and mass ultra-light scalar field. In this paper we study
the effect of lighter vector field on the gravitational waveforms from extreme
mass-ratio i... | [
{
"created": "Mon, 17 Jun 2024 16:41:25 GMT",
"version": "v1"
}
] | 2024-06-18 | [
[
"Zi",
"Tieguang",
""
],
[
"Zhang",
"Chao",
""
]
] | The future space-borne gravitational wave detector, Laser Interferometer Space Antenna (LISA), has the potential of detecting the fundamental fields, such as the charge and mass ultra-light scalar field. In this paper we study the effect of lighter vector field on the gravitational waveforms from extreme mass-ratio ins... |
gr-qc/9912053 | Anjan Ananda Sen | A.A.Sen | Vacuumless cosmic strings in Brans-Dicke theory | 10 pages, Latex, some errors are corrected, new conclusions and
references added | Int.J.Mod.Phys. D10 (2001) 515-522 | 10.1142/S0218271801000986 | null | gr-qc | null | The gravitational fields of vacuumless global and gauge strings have been
studied in Brans-Dicke theory under the weak field assumption of the field
equations. It has been shown that both global and gauge string can have
repulsive as well as attractive gravitational effect in Brans-Dicke theory
which is not so in Gen... | [
{
"created": "Tue, 14 Dec 1999 14:57:25 GMT",
"version": "v1"
},
{
"created": "Sun, 13 Feb 2000 17:47:32 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Sen",
"A. A.",
""
]
] | The gravitational fields of vacuumless global and gauge strings have been studied in Brans-Dicke theory under the weak field assumption of the field equations. It has been shown that both global and gauge string can have repulsive as well as attractive gravitational effect in Brans-Dicke theory which is not so in Gener... |
0708.0734 | Ion I. Cot{\ba}escu | Ion I. Cotaescu | The Schr\" odinger picture of the Dirac quantum mechanics on spatially
flat Robertson-Walker backgrounds | 6 pages 0 figures | null | 10.1142/S0217732307026035 | null | gr-qc math-ph math.MP quant-ph | null | The Schr\" odinger picture of the Dirac quantum mechanics is defined in
charts with spatially flat Robertson-Walker metrics and Cartesian coordinates.
The main observables of this picture are identified, including the interacting
part of the Hamiltonian operator produced by the minimal coupling with the
gravitational... | [
{
"created": "Mon, 6 Aug 2007 10:00:25 GMT",
"version": "v1"
}
] | 2014-10-07 | [
[
"Cotaescu",
"Ion I.",
""
]
] | The Schr\" odinger picture of the Dirac quantum mechanics is defined in charts with spatially flat Robertson-Walker metrics and Cartesian coordinates. The main observables of this picture are identified, including the interacting part of the Hamiltonian operator produced by the minimal coupling with the gravitational f... |
1710.01818 | Shahram Panahiyan | S. H. Hendi, N. Riazi, S. Panahiyan, B. Eslam Panah | Higher dimensional dyonic black holes | 27 pages, 9 figures, Comments are welcomed | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper at hand presents a novel class of dyonic black holes in higher
dimensions through a new proposal for the electromagnetic field tensor. The
black hole solutions are extracted analytically and their geometrical/physical
properties are studied. In addition, the details regarding thermodynamical
structure and p... | [
{
"created": "Wed, 4 Oct 2017 22:19:58 GMT",
"version": "v1"
}
] | 2017-10-06 | [
[
"Hendi",
"S. H.",
""
],
[
"Riazi",
"N.",
""
],
[
"Panahiyan",
"S.",
""
],
[
"Panah",
"B. Eslam",
""
]
] | The paper at hand presents a novel class of dyonic black holes in higher dimensions through a new proposal for the electromagnetic field tensor. The black hole solutions are extracted analytically and their geometrical/physical properties are studied. In addition, the details regarding thermodynamical structure and pha... |
gr-qc/0206033 | Robert D. Klauber | Robert D. Klauber | Derivation of the General Case Sagnac Result using Non-time-orthogonal
Analysis | revised to include changes from pre-publication review; 11 pages
including 3 figures, 4 appendices and references | Found.Phys.Lett. 16 (2003) 447-463 | 10.1023/B:FOPL.0000012776.04871.6d | null | gr-qc | null | The experimentally determined Sagnac fringe shift dependency on angular
velocity and enclosed area is derived from the rotating reference frame using
non-time-orthogonal tensor analysis. The relationship for the most general
case, in which the area enclosed is not circular and does not have the axis of
rotation passi... | [
{
"created": "Wed, 12 Jun 2002 17:14:44 GMT",
"version": "v1"
},
{
"created": "Sun, 9 Nov 2003 18:37:48 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Klauber",
"Robert D.",
""
]
] | The experimentally determined Sagnac fringe shift dependency on angular velocity and enclosed area is derived from the rotating reference frame using non-time-orthogonal tensor analysis. The relationship for the most general case, in which the area enclosed is not circular and does not have the axis of rotation passing... |
2203.11557 | Vikramaditya Mondal | Vikramaditya Mondal | Wave function of the universe in the presence of trans-Planckian
censorship | null | JCAP08(2022)005 | 10.1088/1475-7516/2022/08/005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The wave function for a closed de Sitter universe has been computed,
demanding consistency with the recently proposed Trans-Planckian Censorship
Conjecture (TCC). We extend the Einstein-Hilbert action to contain a
complex-valued term which provides an exponentially decaying weight for the
geometries violating TCC in ... | [
{
"created": "Tue, 22 Mar 2022 09:28:43 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Jun 2022 09:49:09 GMT",
"version": "v2"
}
] | 2022-08-09 | [
[
"Mondal",
"Vikramaditya",
""
]
] | The wave function for a closed de Sitter universe has been computed, demanding consistency with the recently proposed Trans-Planckian Censorship Conjecture (TCC). We extend the Einstein-Hilbert action to contain a complex-valued term which provides an exponentially decaying weight for the geometries violating TCC in th... |
2308.00865 | Tahereh Azizi | Tahereh Azizi, Najibe Borhani, and Mojtaba Haghshenas | Evolution of Gravitational Waves in Non-minimal Coupling Between
Geometry and Matter Theories of Gravity | 26 pages, 22 figures; to appear in Physics of the Dark Universe | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider some specific models of non-minimal matter-geometry coupling
theories and investigate the propagation of the gravitational waves in them.
Extracting the temporal evolution of the gravitational wave equation within the
framework of a flat FRW universe with a perfect fluid distribution, we analyze
the wavef... | [
{
"created": "Tue, 1 Aug 2023 22:28:18 GMT",
"version": "v1"
}
] | 2023-08-03 | [
[
"Azizi",
"Tahereh",
""
],
[
"Borhani",
"Najibe",
""
],
[
"Haghshenas",
"Mojtaba",
""
]
] | We consider some specific models of non-minimal matter-geometry coupling theories and investigate the propagation of the gravitational waves in them. Extracting the temporal evolution of the gravitational wave equation within the framework of a flat FRW universe with a perfect fluid distribution, we analyze the wavefor... |
0902.1487 | Jeferson Oliveira de | Owen Pavel Fernandez Piedra, Jeferson de Oliveira | Vacuum polarization effects on quasinormal modes in electrically charged
black hole spacetimes | 9 pages, 5 figures, typos added, references added and content changed | Int.J.Mod.Phys.D19:63-78,2010 | 10.1142/S0218271810016257 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the influence of vacuum polarization of quantum massive fields
on the scalar sector of quasinormal modes in spherically symmetric black holes.
We consider the evolution of a massless scalar field on the spacetime
corresponding to a charged semiclassical black hole, consisting of the quantum
corrected g... | [
{
"created": "Mon, 9 Feb 2009 18:08:01 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Feb 2009 14:00:40 GMT",
"version": "v2"
},
{
"created": "Tue, 11 Aug 2009 13:39:12 GMT",
"version": "v3"
},
{
"created": "Fri, 12 Feb 2010 17:42:46 GMT",
"version": "v4"
}
] | 2011-07-19 | [
[
"Piedra",
"Owen Pavel Fernandez",
""
],
[
"de Oliveira",
"Jeferson",
""
]
] | We investigate the influence of vacuum polarization of quantum massive fields on the scalar sector of quasinormal modes in spherically symmetric black holes. We consider the evolution of a massless scalar field on the spacetime corresponding to a charged semiclassical black hole, consisting of the quantum corrected geo... |
gr-qc/0701148 | Jordan Camp | Jordan B. Camp, John K. Cannizzo, Kenji Numata | Application of the Hilbert-Huang Transform to the Search for
Gravitational Waves | null | Phys.Rev.D75:061101,2007 | 10.1103/PhysRevD.75.061101 | null | gr-qc | null | We present the application of a novel method of time-series analysis, the
Hilbert-Huang Transform, to the search for gravitational waves. This algorithm
is adaptive and does not impose a basis set on the data, and thus the
time-frequency decomposition it provides is not limited by time-frequency
uncertainty spreading... | [
{
"created": "Sat, 27 Jan 2007 16:10:31 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Camp",
"Jordan B.",
""
],
[
"Cannizzo",
"John K.",
""
],
[
"Numata",
"Kenji",
""
]
] | We present the application of a novel method of time-series analysis, the Hilbert-Huang Transform, to the search for gravitational waves. This algorithm is adaptive and does not impose a basis set on the data, and thus the time-frequency decomposition it provides is not limited by time-frequency uncertainty spreading. ... |
2008.07697 | Nomaan X | Sumati Surya, Nomaan X and Yasaman K. Yazdi | Entanglement Entropy of Causal Set de Sitter Horizons | 30 pages, 16 figures | Class. Quantum Grav. 38 115001 (2021) | 10.1088/1361-6382/abf279 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | de Sitter cosmological horizons are known to exhibit thermodynamic properties
similar to black hole horizons. In this work we study causal set de Sitter
horizons, using Sorkin's spacetime entanglement entropy (SSEE) formula, for a
conformally coupled quantum scalar field. We calculate the causal set SSEE for
the Rind... | [
{
"created": "Tue, 18 Aug 2020 02:07:26 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Mar 2021 13:38:58 GMT",
"version": "v2"
}
] | 2023-11-27 | [
[
"Surya",
"Sumati",
""
],
[
"X",
"Nomaan",
""
],
[
"Yazdi",
"Yasaman K.",
""
]
] | de Sitter cosmological horizons are known to exhibit thermodynamic properties similar to black hole horizons. In this work we study causal set de Sitter horizons, using Sorkin's spacetime entanglement entropy (SSEE) formula, for a conformally coupled quantum scalar field. We calculate the causal set SSEE for the Rindle... |
2009.01794 | Sandeep Aashish | Sandeep Aashish | Note on stability and microcausality in Lorentz violating antisymmetric
tensor field | 12 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The fundamental issues of microcausality and energy positivity conditions are
important to be investigated in the context of spontaneous Lorentz violating
theories. We check the microcausality and energy positivity conditions for a
free rank-2 antisymmetric tensor field with spontaneous Lorentz violating term
and a c... | [
{
"created": "Thu, 3 Sep 2020 16:55:18 GMT",
"version": "v1"
}
] | 2020-09-04 | [
[
"Aashish",
"Sandeep",
""
]
] | The fundamental issues of microcausality and energy positivity conditions are important to be investigated in the context of spontaneous Lorentz violating theories. We check the microcausality and energy positivity conditions for a free rank-2 antisymmetric tensor field with spontaneous Lorentz violating term and a cla... |
gr-qc/0401006 | Tetsuya Shiromizu | Tetsuya Shiromizu, Shinya Tomizawa | Spatial infinity in higher dimensional spacetimes | 6 pages, accepted for publication in Physical Review D, published
version | Phys.Rev. D69 (2004) 104012 | 10.1103/PhysRevD.69.104012 | null | gr-qc astro-ph hep-th | null | Motivated by recent studies on the uniqueness or non-uniqueness of higher
dimensional black hole spacetime, we investigate the asymptotic structure of
spatial infinity in n-dimensional spacetimes($n \geq 4$). It turns out that the
geometry of spatial infinity does not have maximal symmetry due to the
non-trivial Weyl... | [
{
"created": "Sat, 3 Jan 2004 01:52:54 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Jan 2004 05:06:18 GMT",
"version": "v2"
},
{
"created": "Sun, 8 Feb 2004 04:01:01 GMT",
"version": "v3"
},
{
"created": "Wed, 24 Mar 2004 07:56:44 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Shiromizu",
"Tetsuya",
""
],
[
"Tomizawa",
"Shinya",
""
]
] | Motivated by recent studies on the uniqueness or non-uniqueness of higher dimensional black hole spacetime, we investigate the asymptotic structure of spatial infinity in n-dimensional spacetimes($n \geq 4$). It turns out that the geometry of spatial infinity does not have maximal symmetry due to the non-trivial Weyl t... |
gr-qc/9405069 | Dr. Beverly Berger | B.K. Berger, D. Garfinkle, V. Swamy | Detection of Computer Generated Gravitational Waves in Numerical
Cosmologies | 15 pages Plain TeX, 9 pages of figures available on request by FAX or
mail | Gen.Rel.Grav. 27 (1995) 511-527 | 10.1007/BF02105076 | null | gr-qc | null | We propose to study the behavior of complicated numerical solutions to
Einstein's equations for generic cosmologies by following the geodesic motion
of a swarm of test particles. As an example, we consider a cylinder of test
particles initially at rest in the plane symmetric Gowdy universe on $T^3
\times R$. For a ci... | [
{
"created": "Fri, 27 May 1994 23:50:09 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Berger",
"B. K.",
""
],
[
"Garfinkle",
"D.",
""
],
[
"Swamy",
"V.",
""
]
] | We propose to study the behavior of complicated numerical solutions to Einstein's equations for generic cosmologies by following the geodesic motion of a swarm of test particles. As an example, we consider a cylinder of test particles initially at rest in the plane symmetric Gowdy universe on $T^3 \times R$. For a circ... |
2105.05642 | Kimihiro Nomura | Kimihiro Nomura, Daisuke Yoshida | Past extendibility and initial singularity in
Friedmann-Lema\^{i}tre-Robertson-Walker and Bianchi I spacetimes | 33 pages, 3 figures | JCAP07(2021)047 | 10.1088/1475-7516/2021/07/047 | KOBE-COSMO-21-08 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study past-directed extendibility of
Friedmann-Lema\^{i}tre-Robertson-Walker (FLRW) and Bianchi type I spacetimes
with a scale factor vanishing in the past. We give criteria for determining
whether a boundary for past-directed incomplete geodesics is a parallelly
propagated curvature singularity, which cannot nece... | [
{
"created": "Wed, 12 May 2021 13:21:02 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Jul 2021 03:49:17 GMT",
"version": "v2"
}
] | 2021-07-28 | [
[
"Nomura",
"Kimihiro",
""
],
[
"Yoshida",
"Daisuke",
""
]
] | We study past-directed extendibility of Friedmann-Lema\^{i}tre-Robertson-Walker (FLRW) and Bianchi type I spacetimes with a scale factor vanishing in the past. We give criteria for determining whether a boundary for past-directed incomplete geodesics is a parallelly propagated curvature singularity, which cannot necess... |
2407.16960 | Martin Reiris | Javier Peraza and Martin Reiris | Static vacuum 3+1 black holes that cannot be put into stationary
rotation | 15 pages, 3 figures | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that some of the static Myers/Korotkin-Nicolai (MKN) vacuum 3+1
static black holes cannot be put into stationary rotation. Namely, they cannot
be deformed into axisymmetric stationary vacuum black holes with non-zero
angular momentum. Other than axisymmetry, no assumptions are made on the
possible deformatio... | [
{
"created": "Wed, 24 Jul 2024 02:57:50 GMT",
"version": "v1"
}
] | 2024-07-25 | [
[
"Peraza",
"Javier",
""
],
[
"Reiris",
"Martin",
""
]
] | We prove that some of the static Myers/Korotkin-Nicolai (MKN) vacuum 3+1 static black holes cannot be put into stationary rotation. Namely, they cannot be deformed into axisymmetric stationary vacuum black holes with non-zero angular momentum. Other than axisymmetry, no assumptions are made on the possible deformations... |
gr-qc/0612175 | Jia-Chen Hua | Jia-Chen Hua (1, 2), Yong-Chang Huang (2, 3, 4) ((1) Department of
Physics, University of Houston, Houston, USA, (2) Institute of Theoretical
Physics, Beijing University of Technology, Beijing, China, (3) Kavli
Institute for Theoretical Physics, Chinese Academy of Sciences, Beijing,
China, (4) CCAST (World Lab.... | Quantum Radiation Properties of Dirac Particles in General Nonstationary
Black Holes | This paper has been revised and will appear in Advances in High
Energy Physics. Please refer to the journal reference for the finalized
publication version | Advances in High Energy Physics, vol. 2014, Article ID 707519, 10
pages, 2014 | 10.1155/2014/707519 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum radiation properties of Dirac particles in general nonstationary
black holes in the general case is investigated by both using the method of
generalized tortoise coordinate transformation and considering the asymptotic
behaviors of both the first and second order forms of Dirac equations near the
event horizo... | [
{
"created": "Thu, 28 Dec 2006 02:50:02 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Apr 2007 22:00:49 GMT",
"version": "v2"
},
{
"created": "Tue, 8 May 2007 09:54:51 GMT",
"version": "v3"
},
{
"created": "Sat, 19 May 2007 03:26:47 GMT",
"version": "v4"
},
{
"cr... | 2014-02-06 | [
[
"Hua",
"Jia-Chen",
""
],
[
"Huang",
"Yong-Chang",
""
]
] | Quantum radiation properties of Dirac particles in general nonstationary black holes in the general case is investigated by both using the method of generalized tortoise coordinate transformation and considering the asymptotic behaviors of both the first and second order forms of Dirac equations near the event horizon.... |
1911.08371 | Shahar Hod | Shahar Hod | No nonminimally coupled massless scalar hair for spherically symmetric
neutral black holes | 8 pages | Physics Letters B 771, 521 (2017) | 10.1016/j.physletb.2017.06.005 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a remarkably compact proof that spherically symmetric neutral
black holes cannot support static nonminimally coupled massless scalar fields.
The theorem is based on causality restrictions imposed on the energy-momentum
tensor of the fields near the regular black-hole horizon.
| [
{
"created": "Tue, 19 Nov 2019 16:02:58 GMT",
"version": "v1"
}
] | 2019-11-27 | [
[
"Hod",
"Shahar",
""
]
] | We provide a remarkably compact proof that spherically symmetric neutral black holes cannot support static nonminimally coupled massless scalar fields. The theorem is based on causality restrictions imposed on the energy-momentum tensor of the fields near the regular black-hole horizon. |
1902.06783 | Salvatore Capozziello | Gamal G. L. Nashed and Salvatore Capozziello | Charged spherically symmetric black holes in $f(R)$ gravity and their
stability analysis | 17 pages, 5 figures, accepted for publication in Physical Review D.
This version contains an Addendum where a typo is pointed out. arXiv admin
note: text overlap with arXiv:1107.3705 by other authors | Phys. Rev. D 99, 104018 (2019) | 10.1103/PhysRevD.99.104018 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new class of analytic charged spherically symmetric black hole solutions,
which behave asymptotically as flat or (A)dS spacetimes, is derived for
specific classes of $f(R)$ gravity, i.e., $f(R)=R-2\alpha\sqrt{R}$ and
$f(R)=R-2\alpha\sqrt{R-8\Lambda}$, where $\Lambda$ is the cosmological
constant. These black holes ... | [
{
"created": "Mon, 18 Feb 2019 20:11:53 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Apr 2019 06:59:50 GMT",
"version": "v2"
},
{
"created": "Sun, 7 Jul 2019 15:50:42 GMT",
"version": "v3"
},
{
"created": "Sun, 14 Jul 2019 08:48:19 GMT",
"version": "v4"
}
] | 2019-07-18 | [
[
"Nashed",
"Gamal G. L.",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | A new class of analytic charged spherically symmetric black hole solutions, which behave asymptotically as flat or (A)dS spacetimes, is derived for specific classes of $f(R)$ gravity, i.e., $f(R)=R-2\alpha\sqrt{R}$ and $f(R)=R-2\alpha\sqrt{R-8\Lambda}$, where $\Lambda$ is the cosmological constant. These black holes ar... |
1610.04933 | Sandro D. P. Vitenti | Diogo C. F. Celani, Nelson Pinto-Neto, Sandro D. P. Vitenti | Particle Creation in Bouncing Cosmologies | 18 pages, 8 figures | Phys. Rev. D 95, 023523 (2017) | 10.1103/PhysRevD.95.023523 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate scalar particle creation in a set of bouncing models where the
bounce occurs due to quantum cosmological effects described by the
Wheeler-DeWitt equation. The scalar field can be either conformally or
minimally coupled to gravity, and it can be massive or massless, without self
interaction. The analysi... | [
{
"created": "Mon, 17 Oct 2016 00:25:51 GMT",
"version": "v1"
}
] | 2017-02-03 | [
[
"Celani",
"Diogo C. F.",
""
],
[
"Pinto-Neto",
"Nelson",
""
],
[
"Vitenti",
"Sandro D. P.",
""
]
] | We investigate scalar particle creation in a set of bouncing models where the bounce occurs due to quantum cosmological effects described by the Wheeler-DeWitt equation. The scalar field can be either conformally or minimally coupled to gravity, and it can be massive or massless, without self interaction. The analysis ... |
2308.12317 | Saibal Ray | Francisco Tello-Ortiz, \'Angel Rinc\'on, A. Alvarez and Saibal Ray | Gravitationally decoupled Non-Schwarzschild black holes and wormhole
space-times | 15 pages, 6 figures, Accepted in European Physical Journal C (in
press) | null | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, using gravitational decoupling by means of minimal geometric
deformation approach, we obtain a new spherically symmetric and static black
hole solution. To progress, we close the system by assuming that the average
pressure of the $\theta$-sector is vanishing. Also, we tackle the problem
regarding ho... | [
{
"created": "Wed, 23 Aug 2023 10:28:30 GMT",
"version": "v1"
}
] | 2023-08-25 | [
[
"Tello-Ortiz",
"Francisco",
""
],
[
"Rincón",
"Ángel",
""
],
[
"Alvarez",
"A.",
""
],
[
"Ray",
"Saibal",
""
]
] | In this article, using gravitational decoupling by means of minimal geometric deformation approach, we obtain a new spherically symmetric and static black hole solution. To progress, we close the system by assuming that the average pressure of the $\theta$-sector is vanishing. Also, we tackle the problem regarding how,... |
gr-qc/9805066 | T. P. Singh | T. P. Singh | Gravitational Collapse, Black Holes and Naked Singularities | 17 pages, Latex File. Based on a talk given at the Discussion
Workshop on Black Holes, Bangalore, 9-12 Dec. 1997, to appear in the
Conference Proceedings | J.Astrophys.Astron.20:221,1999 | 10.1007/BF02702354 | TIFR Preprint | gr-qc astro-ph hep-th | null | This article gives an elementary review of gravitational collapse and the
cosmic censorship hypothesis. Known models of collapse resulting in the
formation of black holes and naked singularities are summarized. These models,
when taken together, suggest that the censorship hypothesis may not hold in
classical general... | [
{
"created": "Mon, 18 May 1998 13:04:53 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Singh",
"T. P.",
""
]
] | This article gives an elementary review of gravitational collapse and the cosmic censorship hypothesis. Known models of collapse resulting in the formation of black holes and naked singularities are summarized. These models, when taken together, suggest that the censorship hypothesis may not hold in classical general r... |
2009.10204 | Vladimir Ivashchuk | V. D. Ivashchuk and A. A. Kobtsev | On stable exponential cosmological solutions with two factor spaces in
$(1+ m + 2)$-dimensional EGB model with $\Lambda$-term | 24 pages, 3 figures, Latex, a section (on D=4) with corresponding
references is omitted and 3 figures are replaced | null | null | IGC-RUDN-2020-11/2 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A $(m+ 3)$-dimensional Einstein-Gauss-Bonnet gravitational model including
the Gauss-Bonnet term and the cosmological term $\Lambda$ is considered. Exact
solutions with exponential time dependence of two scale factors, governed by
two Hubble-like parameters $H >0$ and $h \neq H$, corresponding to factor
spaces of dim... | [
{
"created": "Mon, 21 Sep 2020 22:27:13 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Nov 2020 22:41:02 GMT",
"version": "v2"
}
] | 2020-11-16 | [
[
"Ivashchuk",
"V. D.",
""
],
[
"Kobtsev",
"A. A.",
""
]
] | A $(m+ 3)$-dimensional Einstein-Gauss-Bonnet gravitational model including the Gauss-Bonnet term and the cosmological term $\Lambda$ is considered. Exact solutions with exponential time dependence of two scale factors, governed by two Hubble-like parameters $H >0$ and $h \neq H$, corresponding to factor spaces of dimen... |
gr-qc/0311093 | Plamen Fiziev | T.L. Boyadjiev, P.P. Fiziev | Numerical Modeling of Charged Black Holes with Massive Dilaton | talk given at V International Congress on Mathematical Modeling, Sep.
30 -- Oct. 6, Dubna, Russia, 2002: http://www.jinr.ru/vicmm/ latex file, 17
pages, 14 figures | null | null | P11-2002-1 | gr-qc | null | In this paper the static, spherically symmetric and electrically charged
black hole solutions in Einstein-Born-Infeld gravity with massive dilaton are
investigated numerically.
The Continuous Analog of Newton Method (CANM) is used to solve the
corresponding nonlinear multipoint boundary value problems (BVPs). The
l... | [
{
"created": "Fri, 28 Nov 2003 17:16:42 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Boyadjiev",
"T. L.",
""
],
[
"Fiziev",
"P. P.",
""
]
] | In this paper the static, spherically symmetric and electrically charged black hole solutions in Einstein-Born-Infeld gravity with massive dilaton are investigated numerically. The Continuous Analog of Newton Method (CANM) is used to solve the corresponding nonlinear multipoint boundary value problems (BVPs). The linea... |
2211.07278 | Isobel Romero-Shaw | Isobel M. Romero-Shaw, Nicholas Loutrel, Michael Zevin | Inferring Interference: Identifying a Perturbing Tertiary with Eccentric
Gravitational Wave Burst Timing | Version accepted for publication in PRD | null | 10.1103/PhysRevD.107.122001 | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | [Abridged] Binary black holes may form and merge dynamically. These binaries
are likely to become bound with high eccentricities, resulting in a burst of
gravitational radiation at their point of closest approach. When such a binary
is perturbed by a third body, the evolution of the orbit is affected, and
gravitation... | [
{
"created": "Mon, 14 Nov 2022 11:19:38 GMT",
"version": "v1"
},
{
"created": "Sun, 20 Nov 2022 21:26:41 GMT",
"version": "v2"
},
{
"created": "Tue, 23 May 2023 09:51:31 GMT",
"version": "v3"
}
] | 2023-06-21 | [
[
"Romero-Shaw",
"Isobel M.",
""
],
[
"Loutrel",
"Nicholas",
""
],
[
"Zevin",
"Michael",
""
]
] | [Abridged] Binary black holes may form and merge dynamically. These binaries are likely to become bound with high eccentricities, resulting in a burst of gravitational radiation at their point of closest approach. When such a binary is perturbed by a third body, the evolution of the orbit is affected, and gravitational... |
1707.05757 | Bishop Mongwane | Bishop Mongwane | Characteristic Formulation for Metric $f(R)$ Gravity | 20 pages | Phys. Rev. D 96, 024028 (2017) | 10.1103/PhysRevD.96.024028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In recent years, the Characteristic formulation of numerical relativity has
found increasing use in the extraction of gravitational radiation from
numerically generated spacetimes. In this paper, we formulate the
Characteristic initial value problem for $f(R)$ gravity. We consider, in
particular, the vacuum field equ... | [
{
"created": "Tue, 18 Jul 2017 17:34:42 GMT",
"version": "v1"
}
] | 2017-07-19 | [
[
"Mongwane",
"Bishop",
""
]
] | In recent years, the Characteristic formulation of numerical relativity has found increasing use in the extraction of gravitational radiation from numerically generated spacetimes. In this paper, we formulate the Characteristic initial value problem for $f(R)$ gravity. We consider, in particular, the vacuum field equat... |
gr-qc/0206053 | Martin Bojowald | Martin Bojowald | Quantization Ambiguities in Isotropic Quantum Geometry | 20 pages, 6 figures | Class.Quant.Grav.19:5113-5230,2002 | 10.1088/0264-9381/19/20/306 | CGPG-02/6-1 | gr-qc quant-ph | null | Some typical quantization ambiguities of quantum geometry are studied within
isotropic models. Since this allows explicit computations of operators and
their spectra, one can investigate the effects of ambiguities in a quantitative
manner. It is shown that those ambiguities do not affect the fate of the
classical sin... | [
{
"created": "Tue, 18 Jun 2002 14:27:47 GMT",
"version": "v1"
}
] | 2011-09-30 | [
[
"Bojowald",
"Martin",
""
]
] | Some typical quantization ambiguities of quantum geometry are studied within isotropic models. Since this allows explicit computations of operators and their spectra, one can investigate the effects of ambiguities in a quantitative manner. It is shown that those ambiguities do not affect the fate of the classical singu... |
2305.03744 | Marco Astorino | Marco Astorino and Giovanni Boldi | Plebanski-Demianski goes NUTs (to remove the Misner string) | v7: 30 pages, 2 figures, published version | JHEP 08 (2023) 085 | 10.1007/JHEP08(2023)085 | IFUM-1105-FT, LIFT-3-1.23 | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We present a general procedure, based on the Ehlers transformation of the
Ernst equations, to add the gravitomagnetic mass to the whole
Plebanski-Demianski family of solutions. We can efficiently generate a large
class of accelerating black holes, such as Reissner-Nordstrom or Kerr-Newman,
endowed with the NUT parame... | [
{
"created": "Fri, 5 May 2023 18:00:00 GMT",
"version": "v1"
},
{
"created": "Mon, 15 May 2023 17:54:47 GMT",
"version": "v2"
},
{
"created": "Sat, 3 Jun 2023 02:32:32 GMT",
"version": "v3"
},
{
"created": "Fri, 16 Jun 2023 17:58:06 GMT",
"version": "v4"
},
{
"cre... | 2023-08-22 | [
[
"Astorino",
"Marco",
""
],
[
"Boldi",
"Giovanni",
""
]
] | We present a general procedure, based on the Ehlers transformation of the Ernst equations, to add the gravitomagnetic mass to the whole Plebanski-Demianski family of solutions. We can efficiently generate a large class of accelerating black holes, such as Reissner-Nordstrom or Kerr-Newman, endowed with the NUT paramete... |
gr-qc/0001050 | Madhavan Varadarajan | Madhavan Varadarajan (RRI, India) | Fock representations from U(1) holonomy algebras | Latex file, 30 pages, to appear in Phys Rev D | Phys.Rev. D61 (2000) 104001 | 10.1103/PhysRevD.61.104001 | null | gr-qc | null | We revisit the quantization of U(1) holonomy algebras using the abelian C*
algebra based techniques which form the mathematical underpinnings of current
efforts to construct loop quantum gravity. In particular, we clarify the role
of ``smeared loops'' and of Poincare invariance in the construction of Fock
representat... | [
{
"created": "Wed, 19 Jan 2000 09:02:52 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Varadarajan",
"Madhavan",
"",
"RRI, India"
]
] | We revisit the quantization of U(1) holonomy algebras using the abelian C* algebra based techniques which form the mathematical underpinnings of current efforts to construct loop quantum gravity. In particular, we clarify the role of ``smeared loops'' and of Poincare invariance in the construction of Fock representatio... |
1001.5314 | Muhammad Sharif | M. Sharif and G. Abbas | Effects of the Electromagnetic Field on Five-dimensional Gravitational
Collapse | 15 pages, accepted for publication in J. Korean Physical Society | J. Korean Physical Society 56(2010)529-535 | 10.3938/jkps.56.529 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper investigates the five-dimensional(5D) spherically symmetric
gravitational collapse with positive cosmological constant in the presence of
an electromagnetic field. The junction conditions between the 5D non-static
interior and the static exterior spacetimes are derived using the Israel
criteria modified by... | [
{
"created": "Fri, 29 Jan 2010 02:40:22 GMT",
"version": "v1"
}
] | 2015-05-18 | [
[
"Sharif",
"M.",
""
],
[
"Abbas",
"G.",
""
]
] | This paper investigates the five-dimensional(5D) spherically symmetric gravitational collapse with positive cosmological constant in the presence of an electromagnetic field. The junction conditions between the 5D non-static interior and the static exterior spacetimes are derived using the Israel criteria modified by S... |
1904.00907 | D\'aniel Barta | D\'aniel Barta | Effect of viscosity and thermal conductivity on the radial oscillation
and relaxation of relativistic stars | null | Class. Quantum Grav. 36 (2019) 215012 | 10.1088/1361-6382/ab472e | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we present a generic formulation of the linearized dynamical
equations governing small adiabatic radial oscillations of relativistic stars.
The dynamical equations are derived by taking into consideration those effects
of viscosity and thermal conductivity of neutron-star matter which directly
determine... | [
{
"created": "Mon, 1 Apr 2019 15:20:21 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Sep 2019 16:13:47 GMT",
"version": "v2"
}
] | 2022-05-11 | [
[
"Barta",
"Dániel",
""
]
] | In this paper we present a generic formulation of the linearized dynamical equations governing small adiabatic radial oscillations of relativistic stars. The dynamical equations are derived by taking into consideration those effects of viscosity and thermal conductivity of neutron-star matter which directly determine t... |
1401.3044 | Arthur Suvorov | Arthur Suvorov and Anthony W.C. Lun | Closed Form Solutions To Bosonic Perturbations In General Relativity | 15 pages, 0 figures | null | null | null | gr-qc astro-ph.HE math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present some results regarding metric perturbations in general relativity
and other metric theories of gravity. In particular, using the Newman Penrose
variables, we write down and discuss the equations which govern tensor field
perturbations of ranks $0, \pm 1$ and $\pm 2$ (scalar,vector,tensor bosonic
perturbati... | [
{
"created": "Tue, 14 Jan 2014 01:23:37 GMT",
"version": "v1"
}
] | 2014-01-15 | [
[
"Suvorov",
"Arthur",
""
],
[
"Lun",
"Anthony W. C.",
""
]
] | We present some results regarding metric perturbations in general relativity and other metric theories of gravity. In particular, using the Newman Penrose variables, we write down and discuss the equations which govern tensor field perturbations of ranks $0, \pm 1$ and $\pm 2$ (scalar,vector,tensor bosonic perturbation... |
gr-qc/0305012 | Akihiro Ishibashi | Akihiro Ishibashi and Robert M. Wald | Dynamics in Non-Globally-Hyperbolic Static Spacetimes II: General
Analysis of Prescriptions for Dynamics | Latex, 17 pages, no figures | Class.Quant.Grav. 20 (2003) 3815-3826 | 10.1088/0264-9381/20/16/318 | null | gr-qc hep-th | null | It was previously shown by one of us that in any static,
non-globally-hyperbolic, spacetime it is always possible to define a sensible
dynamics for a Klein-Gordon scalar field. The prescription proposed for doing
so involved viewing the spatial derivative part, $A$, of the wave operator as
an operator on a certain $L... | [
{
"created": "Fri, 2 May 2003 20:03:40 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Ishibashi",
"Akihiro",
""
],
[
"Wald",
"Robert M.",
""
]
] | It was previously shown by one of us that in any static, non-globally-hyperbolic, spacetime it is always possible to define a sensible dynamics for a Klein-Gordon scalar field. The prescription proposed for doing so involved viewing the spatial derivative part, $A$, of the wave operator as an operator on a certain $L^2... |
1702.06030 | Maurizio Gasperini | M. Gasperini | Constraints on the production of primordial magnetic seeds in pre-big
bang cosmology | 20 pages, 3 figures. The discussion of the process of seed production
is limited to the case of growing electromagnetic coupling. A new figure
added, typos corrected. To appear in JCAP (2017) | JCAP 06 (2017) 017 | 10.1088/1475-7516/2017/06/017 | BA-TH/710-17 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the amplification of the electromagnetic fluctuations, and the
production of "seeds" for the cosmic magnetic fields, in a class of string
cosmology models whose scalar and tensor perturbations reproduce current
observations and satisfy known phenomenological constraints. We find that the
condition of efficie... | [
{
"created": "Mon, 20 Feb 2017 15:55:58 GMT",
"version": "v1"
},
{
"created": "Sun, 9 Apr 2017 22:00:52 GMT",
"version": "v2"
},
{
"created": "Mon, 5 Jun 2017 13:21:44 GMT",
"version": "v3"
}
] | 2017-06-14 | [
[
"Gasperini",
"M.",
""
]
] | We study the amplification of the electromagnetic fluctuations, and the production of "seeds" for the cosmic magnetic fields, in a class of string cosmology models whose scalar and tensor perturbations reproduce current observations and satisfy known phenomenological constraints. We find that the condition of efficient... |
gr-qc/9602029 | Franz Schunck | Eckehard W. Mielke and Franz E. Schunck | Reconstructing the inflaton potential for an almost flat COBE spectrum | 20 pages REVTeX, uuencoded with 7 postscript figures, uses psfig | Phys.Rev. D52 (1995) 672-678 | 10.1103/PhysRevD.52.672 | null | gr-qc astro-ph hep-ph | null | Using the Hubble parameter as new `inverse time' coordinate ($H$-formalism),
a new method of reconstructing the inflaton potential is developed also using
older results which, in principle, is applicable to any order of the slow-roll
approximation. In first and second order, we need three observational data as
inputs... | [
{
"created": "Tue, 13 Feb 1996 20:36:24 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Mielke",
"Eckehard W.",
""
],
[
"Schunck",
"Franz E.",
""
]
] | Using the Hubble parameter as new `inverse time' coordinate ($H$-formalism), a new method of reconstructing the inflaton potential is developed also using older results which, in principle, is applicable to any order of the slow-roll approximation. In first and second order, we need three observational data as inputs: ... |
1112.1637 | Valeriu Predoi | V. Predoi (for the LIGO Scientific Collaboration, and for the Virgo
Collaboration), and K. Hurley (for IPN) | Search for gravitational waves associated with the InterPlanetary
Network short gamma ray bursts | Methods paper; Proceedings for Eduardo Amaldi 9 Conference on
Gravitational Waves, July 2011, Cardiff, UK | null | 10.1088/1742-6596/363/1/012034 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We outline the scientific motivation behind a search for gravitational waves
associated with short gamma ray bursts detected by the InterPlanetary Network
(IPN) during LIGO's fifth science run and Virgo's first science run. The IPN
localisation of short gamma ray bursts is limited to extended error boxes of
different... | [
{
"created": "Wed, 7 Dec 2011 17:26:19 GMT",
"version": "v1"
}
] | 2019-08-15 | [
[
"Predoi",
"V.",
"",
"for the LIGO Scientific Collaboration, and for the Virgo\n Collaboration"
],
[
"Hurley",
"K.",
"",
"for IPN"
]
] | We outline the scientific motivation behind a search for gravitational waves associated with short gamma ray bursts detected by the InterPlanetary Network (IPN) during LIGO's fifth science run and Virgo's first science run. The IPN localisation of short gamma ray bursts is limited to extended error boxes of different s... |
gr-qc/0311069 | Neil J. Cornish | Louis J. Rubbo, Neil J. Cornish & Olivier Poujade | Forward Modeling of Space-borne Gravitational Wave Detectors | 14 Pages, 14 Figures, RevTex 4 | Phys.Rev. D69 (2004) 082003 | 10.1103/PhysRevD.69.082003 | null | gr-qc | null | Planning is underway for several space-borne gravitational wave observatories
to be built in the next ten to twenty years. Realistic and efficient forward
modeling will play a key role in the design and operation of these
observatories. Space-borne interferometric gravitational wave detectors operate
very differently... | [
{
"created": "Fri, 21 Nov 2003 01:14:33 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Rubbo",
"Louis J.",
""
],
[
"Cornish",
"Neil J.",
""
],
[
"Poujade",
"Olivier",
""
]
] | Planning is underway for several space-borne gravitational wave observatories to be built in the next ten to twenty years. Realistic and efficient forward modeling will play a key role in the design and operation of these observatories. Space-borne interferometric gravitational wave detectors operate very differently f... |
2005.05982 | Jorge Delgado B.S. | Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu | Rotating Axion Boson Stars | v2: minor improvements and added references. Matches version to
appear in JCAP | null | 10.1088/1475-7516/2020/06/037 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct and study rotating axion boson stars (RABSs). These are the
spinning generalisations of the spherical gravitating solitons recently
introduced in arXiv:1909.05515. RABSs are asymptotically flat, stationary,
axially symmetric, everywhere regular solutions of the Einstein-Klein-Gordon
theory, in the presen... | [
{
"created": "Tue, 12 May 2020 18:00:04 GMT",
"version": "v1"
},
{
"created": "Wed, 27 May 2020 09:47:07 GMT",
"version": "v2"
}
] | 2020-07-01 | [
[
"Delgado",
"Jorge F. M.",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
]
] | We construct and study rotating axion boson stars (RABSs). These are the spinning generalisations of the spherical gravitating solitons recently introduced in arXiv:1909.05515. RABSs are asymptotically flat, stationary, axially symmetric, everywhere regular solutions of the Einstein-Klein-Gordon theory, in the presence... |
gr-qc/9612057 | Arvind Borde | Arvind Borde | Regular Black Holes and Topology Change | Nine pages. One Figure. The figure will emerge automatically if you
print via "dvips" | Phys.Rev. D55 (1997) 7615-7617 | 10.1103/PhysRevD.55.7615 | null | gr-qc | null | The conditions are clarified under which regular (i.e., singularity-free)
black holes can exist. It is shown that in a large class of spacetimes that
satisfy the weak energy condition the existence of a regular black hole
requires topology change.
| [
{
"created": "Fri, 20 Dec 1996 01:54:36 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Borde",
"Arvind",
""
]
] | The conditions are clarified under which regular (i.e., singularity-free) black holes can exist. It is shown that in a large class of spacetimes that satisfy the weak energy condition the existence of a regular black hole requires topology change. |
2302.12622 | Charalampos Theofilis | Marios Christodoulou, Fabio D'Ambrosio, Charalampos Theofilis | Geometry Transition in Spinfoams | The work presented here provides a self consistent presentation of
the technique on which the calculation of the estimate for the bounce time of
the black to white transition appeared in Ref. 2 was based | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | We show how the fixed-spin asymptotics of the EPRL model can be used to
perform the spin-sum for spin foam amplitudes defined on fixed two-complexes
without interior faces and contracted with coherent spin-network states peaked
on a discrete simplicial geometry with macroscopic areas. We work in the
representation gi... | [
{
"created": "Fri, 24 Feb 2023 13:36:03 GMT",
"version": "v1"
}
] | 2023-02-27 | [
[
"Christodoulou",
"Marios",
""
],
[
"D'Ambrosio",
"Fabio",
""
],
[
"Theofilis",
"Charalampos",
""
]
] | We show how the fixed-spin asymptotics of the EPRL model can be used to perform the spin-sum for spin foam amplitudes defined on fixed two-complexes without interior faces and contracted with coherent spin-network states peaked on a discrete simplicial geometry with macroscopic areas. We work in the representation give... |
1003.0344 | Nail Khusnutdinov | V.B. Bezerra, E.R. Bezerra de Mello, N.R. Khusnutdinov, S.V. Sushkov | Vacuum polarization of a massive scalar field in a wormhole spacetime | 7 pages, 5 figures | Phys.Rev.D81:084034,2010 | 10.1103/PhysRevD.81.084034 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the vacuum average value of the field square and the
stress-energy tensor of a massive scalar field, with non-minimal coupling $\xi$
to the curvature in the short-throat flat-space wormhole background. The
obtained results are not suitable for an analytical analysis and for this
reason we provide a numer... | [
{
"created": "Mon, 1 Mar 2010 13:22:06 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Apr 2010 04:54:53 GMT",
"version": "v2"
}
] | 2010-05-12 | [
[
"Bezerra",
"V. B.",
""
],
[
"de Mello",
"E. R. Bezerra",
""
],
[
"Khusnutdinov",
"N. R.",
""
],
[
"Sushkov",
"S. V.",
""
]
] | We calculate the vacuum average value of the field square and the stress-energy tensor of a massive scalar field, with non-minimal coupling $\xi$ to the curvature in the short-throat flat-space wormhole background. The obtained results are not suitable for an analytical analysis and for this reason we provide a numeric... |
gr-qc/9610004 | M. A. Clayton | M.A. Clayton | The Tetrad Frame Constraint Algebra | 19 pages, Latex2e with ams-latex style files; now even bigger | Class.Quant.Grav. 14 (1997) 1851-1864 | 10.1088/0264-9381/14/7/019 | UTPT-96-15 | gr-qc | null | It is shown via the principle of path independence that the (time gauge)
constraint algebra derived in (Class. Quantum Grav. 5 (1988) pg. 1405) for
vielbein General Relativity is a generic feature of any covariant theory
formulated in a vielbein frame. In the process of doing so, the relationship
between the coordina... | [
{
"created": "Wed, 2 Oct 1996 00:53:02 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Oct 1996 22:14:55 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Jan 1997 10:47:42 GMT",
"version": "v3"
}
] | 2009-10-28 | [
[
"Clayton",
"M. A.",
""
]
] | It is shown via the principle of path independence that the (time gauge) constraint algebra derived in (Class. Quantum Grav. 5 (1988) pg. 1405) for vielbein General Relativity is a generic feature of any covariant theory formulated in a vielbein frame. In the process of doing so, the relationship between the coordinate... |
1301.6351 | Ming-Lei Tong | Ming-Lei Tong | Relic gravitational waves in the frame of slow-roll inflation with a
power-law potential and the detection | 18 pages, 10 figures, 1 table. To match the published version. arXiv
admin note: substantial text overlap with arXiv:1206.2109 | Class. Quantum Grav. 30, 055013, 2013 | 10.1088/0264-9381/30/5/055013 | NTSC-Tong/02 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtained the analytic solutions of relic gravitational waves (RGWs) for
the slow-roll inflation with a power-law form potential of the scalar field,
$V=\lambda\phi^n$. Based on a reasonable range of $n$ constrained by cosmic
microwave background (CMB) observations, we give tight constraints of the
tensor-to-scalar... | [
{
"created": "Sun, 27 Jan 2013 13:55:19 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Feb 2013 13:11:55 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Tong",
"Ming-Lei",
""
]
] | We obtained the analytic solutions of relic gravitational waves (RGWs) for the slow-roll inflation with a power-law form potential of the scalar field, $V=\lambda\phi^n$. Based on a reasonable range of $n$ constrained by cosmic microwave background (CMB) observations, we give tight constraints of the tensor-to-scalar r... |
1209.5239 | Muzaffer Adak | \"Ozcan Sert (Pamukkale U.) and Muzaffer Adak (Pamukkale U.) | Spinor coupling to the weak Poincare gauge theory of gravity in three
dimensions | We added a new subsection, corrected syntax errors, extended
dicussion. To be published in Phys. Rev. D | Physical Review D 86, 124033 (2012) | 10.1103/PhysRevD.86.124033 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Minimal coupling of a Dirac field to gravity with the most general
non-propagating torsion is considered in (1+2)-dimensions. The field equations
are obtained from a lagrangian by a variational principle. The space-time
torsion is calculated algebraically in terms of a quadratic spinor condensate
plus coupling coeffi... | [
{
"created": "Mon, 24 Sep 2012 12:07:39 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Nov 2012 06:38:02 GMT",
"version": "v2"
}
] | 2013-09-24 | [
[
"Sert",
"Özcan",
"",
"Pamukkale U."
],
[
"Adak",
"Muzaffer",
"",
"Pamukkale U."
]
] | Minimal coupling of a Dirac field to gravity with the most general non-propagating torsion is considered in (1+2)-dimensions. The field equations are obtained from a lagrangian by a variational principle. The space-time torsion is calculated algebraically in terms of a quadratic spinor condensate plus coupling coeffici... |
1509.04703 | Hyerim Noh | Jai-chan Hwang and Hyerim Noh | Newtonian, post-Newtonian and Relativistic Cosmological Perturbation
Theory | 7 pages, published in Nuclear Physics B (Proc. Suppl.) | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Newtonian cosmological perturbation equations valid to full nonlinear order
are well known in the literature. Assuming the absence of the
transverse-tracefree part of the metric, we present the general relativistic
counterpart valid to full nonlinear order. The relativistic equations are
presented without taking the ... | [
{
"created": "Tue, 15 Sep 2015 07:41:44 GMT",
"version": "v1"
}
] | 2015-09-17 | [
[
"Hwang",
"Jai-chan",
""
],
[
"Noh",
"Hyerim",
""
]
] | Newtonian cosmological perturbation equations valid to full nonlinear order are well known in the literature. Assuming the absence of the transverse-tracefree part of the metric, we present the general relativistic counterpart valid to full nonlinear order. The relativistic equations are presented without taking the sl... |
gr-qc/9706009 | Friedrich Wilhelm Hehl | F.W. Hehl, A. Mac\'ias, E.W. Mielke, Yu.N. Obukhov | On the structure of the energy-momentum and the spin currents in Dirac's
electron theory | 19 pages, latex2e, no figures, to appear in: "On Einstein's Path".
Festschrift for E. Schucking on the occasion of his 70th birthday. A. Harvey,
ed. (Springer: Berlin 1997/98) | null | null | null | gr-qc hep-th | null | We consider a classical Dirac field in flat Minkowski spacetime. We perform a
Gordon decomposition of its canonical energy-momentum and spin currents,
respectively. Thereby we find for each of these currents a convective and a
polarization piece. The polarization pieces can be expressed as exterior
covariant derivati... | [
{
"created": "Tue, 3 Jun 1997 14:05:24 GMT",
"version": "v1"
}
] | 2016-08-15 | [
[
"Hehl",
"F. W.",
""
],
[
"Macías",
"A.",
""
],
[
"Mielke",
"E. W.",
""
],
[
"Obukhov",
"Yu. N.",
""
]
] | We consider a classical Dirac field in flat Minkowski spacetime. We perform a Gordon decomposition of its canonical energy-momentum and spin currents, respectively. Thereby we find for each of these currents a convective and a polarization piece. The polarization pieces can be expressed as exterior covariant derivative... |
1401.4706 | Uro\v{s} Kosti\'c | Uro\v{s} Kosti\'c, Martin Horvat, Sante Carloni, Pac\^ome Delva,
Andreja Gomboc | An Autonomous Reference Frame for Relativistic GNSS | 5 pages, 3 figures, in proceedings of the 4th International
Colloquium: Scientific and Fundamental Aspects of the Galileo Programme, 4-6
December 2013, Prague, Czech Republic; removed unnecessary indices from eqs.
3,6,7 and corrected minus signs in eqs. 6 and 7 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Current GNSS systems rely on global reference frames which are fixed to the
Earth (via the ground stations) so their precision and stability in time are
limited by our knowledge of the Earth dynamics. These drawbacks could be
avoided by giving to the constellation of satellites the possibility of
constituting by itse... | [
{
"created": "Sun, 19 Jan 2014 17:23:06 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jan 2014 09:08:37 GMT",
"version": "v2"
}
] | 2014-01-27 | [
[
"Kostić",
"Uroš",
""
],
[
"Horvat",
"Martin",
""
],
[
"Carloni",
"Sante",
""
],
[
"Delva",
"Pacôme",
""
],
[
"Gomboc",
"Andreja",
""
]
] | Current GNSS systems rely on global reference frames which are fixed to the Earth (via the ground stations) so their precision and stability in time are limited by our knowledge of the Earth dynamics. These drawbacks could be avoided by giving to the constellation of satellites the possibility of constituting by itself... |
gr-qc/0303068 | Claudio Simeone | Gaston Giribet | Brief comments on Jackiw-Teitelboim gravity coupled to Liouville theory | 14 pages, no figures. v2 References added. To be published in
Classical and Quantum Gravity. v3 typos corrected | Class.Quant.Grav. 20 (2003) 2119-2130 | 10.1088/0264-9381/20/11/312 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Jackiw-Teitelboim gravity with non-vanishing cosmological constant coupled to
Liouville theory is considered as a non-critical string on $d$ dimensional flat
spacetime. It is discussed how the presence of cosmological constant yields
additional constraints on the parameter space of the theory, even when the
conformal... | [
{
"created": "Tue, 18 Mar 2003 18:59:24 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Apr 2003 23:55:12 GMT",
"version": "v2"
},
{
"created": "Wed, 23 Aug 2017 21:31:44 GMT",
"version": "v3"
}
] | 2017-08-29 | [
[
"Giribet",
"Gaston",
""
]
] | Jackiw-Teitelboim gravity with non-vanishing cosmological constant coupled to Liouville theory is considered as a non-critical string on $d$ dimensional flat spacetime. It is discussed how the presence of cosmological constant yields additional constraints on the parameter space of the theory, even when the conformal a... |
gr-qc/9903030 | Wai-Mo Suen | Miguel Alcubierre, Bernd Brugmann, Mark Miller and Wai-Mo Suen | A Conformal Hyperbolic Formulation of the Einstein Equations | 4 pages | Phys.Rev.D60:064017,1999 | 10.1103/PhysRevD.60.064017 | null | gr-qc | null | We propose a re-formulation of the Einstein evolution equations that cleanly
separates the conformal degrees of freedom and the non-conformal degrees of
freedom with the latter satisfying a first order strongly hyperbolic system.
The conformal degrees of freedom are taken to be determined by the choice of
slicing and... | [
{
"created": "Mon, 8 Mar 1999 21:48:53 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Alcubierre",
"Miguel",
""
],
[
"Brugmann",
"Bernd",
""
],
[
"Miller",
"Mark",
""
],
[
"Suen",
"Wai-Mo",
""
]
] | We propose a re-formulation of the Einstein evolution equations that cleanly separates the conformal degrees of freedom and the non-conformal degrees of freedom with the latter satisfying a first order strongly hyperbolic system. The conformal degrees of freedom are taken to be determined by the choice of slicing and t... |
1201.4656 | Miroslav Shaltev | Miroslav Shaltev | Coherent follow-up of Continuous Gravitational Wave candidates: minimal
required observation time | 9 pages, 3 figures, Amaldi 9 | null | 10.1088/1742-6596/363/1/012043 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive two different methods to compute the minimal required integration
time of a fully coherent follow-up of candidates produced in wide parameter
space semi-coherent searches, such as global correlation StackSlide searches
using Einstein@Home. We numerically compare these methods in terms of
integration duratio... | [
{
"created": "Mon, 23 Jan 2012 09:51:43 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Mar 2012 14:28:47 GMT",
"version": "v2"
}
] | 2013-11-26 | [
[
"Shaltev",
"Miroslav",
""
]
] | We derive two different methods to compute the minimal required integration time of a fully coherent follow-up of candidates produced in wide parameter space semi-coherent searches, such as global correlation StackSlide searches using Einstein@Home. We numerically compare these methods in terms of integration duration ... |
gr-qc/0103035 | Carlo Ungarelli | M. Gasperini and C. Ungarelli | Detecting a relic background of scalar waves with LIGO | 17 pages, uses revtex | Phys.Rev. D64 (2001) 064009 | 10.1103/PhysRevD.64.064009 | null | gr-qc astro-ph hep-th | null | We discuss the possible detection of a stochastic background of massive,
non-relativistic scalar particles, through the cross correlation of the two
LIGO interferometers in the initial, enhanced and advanced configuration. If
the frequency corresponding to the mass of the scalar field lies in the
detector sensitivity... | [
{
"created": "Mon, 12 Mar 2001 15:21:56 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Gasperini",
"M.",
""
],
[
"Ungarelli",
"C.",
""
]
] | We discuss the possible detection of a stochastic background of massive, non-relativistic scalar particles, through the cross correlation of the two LIGO interferometers in the initial, enhanced and advanced configuration. If the frequency corresponding to the mass of the scalar field lies in the detector sensitivity b... |
2206.05690 | Wenkun Luo | Wen-Kun Luo, Cheng-Yong Zhang, Peng Liu, Chao Niu, and Bin Wang | Dynamical spontaneous scalarization in Einstein-Maxwell-scalar models in
anti-de Sitter spacetime | 20pages,8figures | null | 10.1103/PhysRevD.106.064036 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The phenomenon of spontaneous scalarization of charged black holes has
attracted a lot of attention. In this work, we study the dynamical process of
the spontaneous scalarization of charged black hole in asymptotically anti-de
Sitter spacetimes in Einstein-Maxwell-scalar models. Including various
non-minimal coupling... | [
{
"created": "Sun, 12 Jun 2022 08:06:18 GMT",
"version": "v1"
}
] | 2022-10-05 | [
[
"Luo",
"Wen-Kun",
""
],
[
"Zhang",
"Cheng-Yong",
""
],
[
"Liu",
"Peng",
""
],
[
"Niu",
"Chao",
""
],
[
"Wang",
"Bin",
""
]
] | The phenomenon of spontaneous scalarization of charged black holes has attracted a lot of attention. In this work, we study the dynamical process of the spontaneous scalarization of charged black hole in asymptotically anti-de Sitter spacetimes in Einstein-Maxwell-scalar models. Including various non-minimal couplings ... |
2009.02133 | Sam Patrick | Sam Patrick | On the analogy between black holes and bathtub vortices | Thesis, 165 pages, 40 figures | null | null | null | gr-qc physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Analogical thinking is a valuable tool in theoretical physics, since it
allows us to take the understanding we have developed in one system and apply
it to another. In this thesis, we study the analogy between two seemingly
unlikely systems: rotating black holes, elusive cosmic entities that push our
theoretical unde... | [
{
"created": "Fri, 4 Sep 2020 12:16:06 GMT",
"version": "v1"
}
] | 2020-09-07 | [
[
"Patrick",
"Sam",
""
]
] | Analogical thinking is a valuable tool in theoretical physics, since it allows us to take the understanding we have developed in one system and apply it to another. In this thesis, we study the analogy between two seemingly unlikely systems: rotating black holes, elusive cosmic entities that push our theoretical unders... |
gr-qc/9710046 | Burkhard Kleihaus | Abha Sood, Burkhard Kleihaus, Jutta Kunz | Limiting solutions of sequences of globally regular and black hole
solutions in SU(N)-EYMD theories | 3 pages, LaTeX, mprocl.sty and 2 ps files included, talk given in the
Hairy Black Holes session at the MG8 conference | null | null | null | gr-qc hep-th | null | Static spherically symmetric solutions in SU(N)-EYM and EYMD theories are
classified by the node numbers of their non-trivial gauge field functions. With
increasing node numbers, the solutions form sequences, tending to limiting
solutions. The limiting solutions are based on subalgebras of $su(N)$,
consisting of a ne... | [
{
"created": "Wed, 8 Oct 1997 10:06:20 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sood",
"Abha",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | Static spherically symmetric solutions in SU(N)-EYM and EYMD theories are classified by the node numbers of their non-trivial gauge field functions. With increasing node numbers, the solutions form sequences, tending to limiting solutions. The limiting solutions are based on subalgebras of $su(N)$, consisting of a neut... |
1707.08791 | J. W. van Holten | J.W. van Holten | D = 1 supergravity and quantum cosmology | 9 pages including references; contribution to SYMPHYS XVII, Yerevan
(Armenia), July 2017 | Physics of Atomic Nuclei 81 (2018) 858 | 10.1134/S1063778818060182 | Nikhef/2017-036 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a D = 1 supergravity framework I construct a super-Friedmann equation
for an isotropic and homogenous universe including dynamical scalar fields. In
the context of quantum theory this becomes an equation for a wave-function of
the universe of spinorial type, the Wheeler-DeWitt- Dirac equation. It is
argued that... | [
{
"created": "Thu, 27 Jul 2017 09:29:30 GMT",
"version": "v1"
}
] | 2019-02-12 | [
[
"van Holten",
"J. W.",
""
]
] | Using a D = 1 supergravity framework I construct a super-Friedmann equation for an isotropic and homogenous universe including dynamical scalar fields. In the context of quantum theory this becomes an equation for a wave-function of the universe of spinorial type, the Wheeler-DeWitt- Dirac equation. It is argued that a... |
2405.14653 | Manuel Gonzalez-Espinoza | Manuel Gonzalez-Espinoza and Ramon Herrera | Inflation in a scalar-vector gravity theory | null | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the possibility that inflation is driven by a scalar field together
with a vector field minimally coupled to gravity. By assuming an effective
potential that incorporates both fields into the action, we explore two
distinct scenarios: one where the fields interact and another where they do
not. In this conte... | [
{
"created": "Thu, 23 May 2024 14:53:40 GMT",
"version": "v1"
}
] | 2024-05-24 | [
[
"Gonzalez-Espinoza",
"Manuel",
""
],
[
"Herrera",
"Ramon",
""
]
] | We study the possibility that inflation is driven by a scalar field together with a vector field minimally coupled to gravity. By assuming an effective potential that incorporates both fields into the action, we explore two distinct scenarios: one where the fields interact and another where they do not. In this context... |
2102.05587 | Recai Erdem | Recai Erdem and Kemal Gultekin | Particle physics processes in cosmology through an effective Minkowski
space formulation and the limitations of the method | Some comments for further clarification of the content and the scope
of the paper are added in the light of the comments of the anonymous referee.
Typos are fixed. arXiv admin note: text overlap with arXiv:1908.08784 | null | 10.1140/epjc/s10052-021-09524-8 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We introduce a method where particle physics processes in cosmology may be
calculated by the usual perturbative flat space quantum field theory through an
effective Minkowski space description at small time intervals provided that the
running of the effective particle masses are sufficiently slow. We discuss the
nece... | [
{
"created": "Wed, 10 Feb 2021 17:34:10 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Aug 2021 15:02:09 GMT",
"version": "v2"
}
] | 2021-09-01 | [
[
"Erdem",
"Recai",
""
],
[
"Gultekin",
"Kemal",
""
]
] | We introduce a method where particle physics processes in cosmology may be calculated by the usual perturbative flat space quantum field theory through an effective Minkowski space description at small time intervals provided that the running of the effective particle masses are sufficiently slow. We discuss the necess... |
1703.06258 | Dnyaneshwar Pawar Dr | P. K. Agrawal and D. D. Pawar | Vacuum Solutions of FRW and Axially Symmetric space-time in f(R) Theory
of Gravity | Under review in Iranian Journal of Science and Technology | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper an attempt has been made to study the spatially
homogeneous and isotropic FRW model and axially symmetric spacetime in f(R)
theory of gravity. We have obtained the solutions of the field equations in
vacuum. To find the solutions of axially symmetric space-time we have assumed
the relation betwee... | [
{
"created": "Sat, 18 Mar 2017 06:10:13 GMT",
"version": "v1"
}
] | 2017-03-21 | [
[
"Agrawal",
"P. K.",
""
],
[
"Pawar",
"D. D.",
""
]
] | In the present paper an attempt has been made to study the spatially homogeneous and isotropic FRW model and axially symmetric spacetime in f(R) theory of gravity. We have obtained the solutions of the field equations in vacuum. To find the solutions of axially symmetric space-time we have assumed the relation between ... |
2101.05964 | Suvikranth Gera | Suvikranth Gera and Sandipan Sengupta | Finite model of an electric charge | 5 pages, version matches the journal version | Phys. Rev. D 104, 044057 (2021) | 10.1103/PhysRevD.104.044057 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We set up a model of an electric charge where the noninvertible metric phase
of first order gravity supercedes the point charge singularity in a curved
spacetime. A topological interpretation of the electric charge is provided in
terms of an index defined for the degenerate spacetime solution, being closely
related t... | [
{
"created": "Fri, 15 Jan 2021 04:40:00 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Aug 2021 07:02:27 GMT",
"version": "v2"
}
] | 2021-09-01 | [
[
"Gera",
"Suvikranth",
""
],
[
"Sengupta",
"Sandipan",
""
]
] | We set up a model of an electric charge where the noninvertible metric phase of first order gravity supercedes the point charge singularity in a curved spacetime. A topological interpretation of the electric charge is provided in terms of an index defined for the degenerate spacetime solution, being closely related to ... |
1611.06043 | Rituparno Goswami | Dan B. Sibandze, Rituparno Goswami, Sunil D. Maharaj, Anne Marie
Nzioki, Peter K. S. Dunsby | Scalar wave scattering from Schwarzschild black holes in modified
gravity | 14 pages, 2 figures. minor changes, references added | null | 10.1140/epjc/s10052-017-4936-0 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the scattering of gravitational waves off a Schwarzschild black
hole in $f(R)$ gravity. We show that the reflection and transmission
coefficients for tensor waves are the same as in General Relativity. While the
scalar waves, which are not present in General Relativity, demonstrate
interesting features. T... | [
{
"created": "Fri, 18 Nov 2016 11:02:05 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Nov 2016 07:31:47 GMT",
"version": "v2"
}
] | 2017-09-13 | [
[
"Sibandze",
"Dan B.",
""
],
[
"Goswami",
"Rituparno",
""
],
[
"Maharaj",
"Sunil D.",
""
],
[
"Nzioki",
"Anne Marie",
""
],
[
"Dunsby",
"Peter K. S.",
""
]
] | We consider the scattering of gravitational waves off a Schwarzschild black hole in $f(R)$ gravity. We show that the reflection and transmission coefficients for tensor waves are the same as in General Relativity. While the scalar waves, which are not present in General Relativity, demonstrate interesting features. The... |
1405.7019 | Emmanuil Saridakis | Tiberiu Harko (University Coll. London), Francisco S. N. Lobo (Lisbon
U., CAAUL), Emmanuel N. Saridakis (Natl. Tech. U., Athens and Valparaiso U.,
Catolica) | Cosmology with higher-derivative matter fields | 22 pages, 8 figures, version published in Int.J.Geom.Meth.Mod.Phys | Int.J.Geom.Meth.Mod.Phys. 13 (2016), 1650102 | 10.1142/S0219887816501024 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the cosmological implications of a new class of modified
gravity, where the field equations generically include higher-order derivatives
of the matter fields, arising from the introduction of non-dynamical auxiliary
fields in the action. Imposing a flat, homogeneous and isotropic geometry we
extract th... | [
{
"created": "Tue, 27 May 2014 19:13:08 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Jun 2016 06:06:15 GMT",
"version": "v2"
}
] | 2016-07-01 | [
[
"Harko",
"Tiberiu",
"",
"University Coll. London"
],
[
"Lobo",
"Francisco S. N.",
"",
"Lisbon\n U., CAAUL"
],
[
"Saridakis",
"Emmanuel N.",
"",
"Natl. Tech. U., Athens and Valparaiso U.,\n Catolica"
]
] | We investigate the cosmological implications of a new class of modified gravity, where the field equations generically include higher-order derivatives of the matter fields, arising from the introduction of non-dynamical auxiliary fields in the action. Imposing a flat, homogeneous and isotropic geometry we extract the ... |
0911.1208 | Carles Bona | C. Bona and C. Bona-Casas | Gowdy waves as a test-bed for constraint-preserving boundary conditions | 5 pages, 1 figure. Contribution to the Spanish Relativity Meeting
2009 | J.Phys.Conf.Ser.229:012022,2010 | 10.1088/1742-6596/229/1/012022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gowdy waves, one of the standard 'apples with apples' tests, is proposed as a
test-bed for constraint-preserving boundary conditions in the non-linear
regime. As an illustration, energy-constraint preservation is separately tested
in the Z4 framework. Both algebraic conditions, derived from energy estimates,
and deri... | [
{
"created": "Fri, 6 Nov 2009 10:04:11 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Bona",
"C.",
""
],
[
"Bona-Casas",
"C.",
""
]
] | Gowdy waves, one of the standard 'apples with apples' tests, is proposed as a test-bed for constraint-preserving boundary conditions in the non-linear regime. As an illustration, energy-constraint preservation is separately tested in the Z4 framework. Both algebraic conditions, derived from energy estimates, and deriva... |
0906.3216 | Jose Natario | Filipe C. Mena, Jose Natario and Paul Tod | Formation of Higher-dimensional Topological Black Holes | 16 pages, 3 figures; v2: typos corrected, matches final published
version | Annales Henri Poincare 10:1359-1376,2010 | 10.1007/s00023-009-0013-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study higher dimensional gravitational collapse to topological black holes
in two steps. Firstly, we construct some (n+2)-dimensional collapsing
space-times, which include generalised Lemaitre-Tolman-Bondi-like solutions,
and we prove that these can be matched to static $\Lambda$-vacuum exterior
space-times. We th... | [
{
"created": "Wed, 17 Jun 2009 15:56:08 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Sep 2009 18:08:10 GMT",
"version": "v2"
}
] | 2010-02-17 | [
[
"Mena",
"Filipe C.",
""
],
[
"Natario",
"Jose",
""
],
[
"Tod",
"Paul",
""
]
] | We study higher dimensional gravitational collapse to topological black holes in two steps. Firstly, we construct some (n+2)-dimensional collapsing space-times, which include generalised Lemaitre-Tolman-Bondi-like solutions, and we prove that these can be matched to static $\Lambda$-vacuum exterior space-times. We then... |
2104.05419 | Gautham Varma K | Lawrence Paul Horwitz, Vishnu S Namboothiri, Gautham Varma K, Asher
Yahalom, Yossi Strauss, Jacob Levitan | Raychaudhuri Equation,Geometrical Flows and Geometrical Entropy | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Raychaudhuri equation is derived by assuming geometric flow in spacetime M of
n+1 dimensions. The equation turns into a harmonic oscillator form under
suitable transformations.Thereby a relation between geometrical entropy and
mean geodesic deviation is established. This has a connection to chaos theory
where the tra... | [
{
"created": "Mon, 12 Apr 2021 12:52:01 GMT",
"version": "v1"
}
] | 2021-04-13 | [
[
"Horwitz",
"Lawrence Paul",
""
],
[
"Namboothiri",
"Vishnu S",
""
],
[
"K",
"Gautham Varma",
""
],
[
"Yahalom",
"Asher",
""
],
[
"Strauss",
"Yossi",
""
],
[
"Levitan",
"Jacob",
""
]
] | Raychaudhuri equation is derived by assuming geometric flow in spacetime M of n+1 dimensions. The equation turns into a harmonic oscillator form under suitable transformations.Thereby a relation between geometrical entropy and mean geodesic deviation is established. This has a connection to chaos theory where the traje... |
gr-qc/9709080 | Paulo Rodrigues Lima Vargas Moniz | P. V. Moniz (DAMTP, U. Cambridge) | Wave Function for the Reissner-Nordstr\"om Black-Hole | 13 pages, LaTeX | Mod.Phys.Lett. A12 (1997) 1491-1505 | 10.1142/S0217732397001527 | DAMTP R/97/23 | gr-qc hep-th | null | We study the quantum behaviour of Reissner-Nordstr\"om (RN) black-holes
interacting with a complex scalar field. A Maxwell field is also present. Our
analysis is based on M. Pollock's method and is characterized by solving a
Wheeler-DeWitt equation in the proximity of an apparent horizon of the RN
space-time. Subsequ... | [
{
"created": "Tue, 30 Sep 1997 09:15:22 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Moniz",
"P. V.",
"",
"DAMTP, U. Cambridge"
]
] | We study the quantum behaviour of Reissner-Nordstr\"om (RN) black-holes interacting with a complex scalar field. A Maxwell field is also present. Our analysis is based on M. Pollock's method and is characterized by solving a Wheeler-DeWitt equation in the proximity of an apparent horizon of the RN space-time. Subsequen... |
1506.08273 | Vasilis Oikonomou | J. Haro, A.N. Makarenko, A.N. Myagky, S. D. Odintsov, V.K. Oikonomou | Bounce Loop Quantum Cosmology Corrected Gauss-Bonnet Gravity | Revised version, to appear in PRD | Phys. Rev. D 92, 124026 (2015) | 10.1103/PhysRevD.92.124026 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a Gauss-Bonnet extension of Loop Quantum Cosmology, by introducing
holonomy corrections in modified $F(\mathcal{G})$ theories of gravity. Within
the context of our formalism, we provide a perturbative expansion in the
critical density, a parameter characteristic of Loop Quantum Gravity theories,
and we res... | [
{
"created": "Sat, 27 Jun 2015 09:40:30 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Nov 2015 15:25:35 GMT",
"version": "v2"
}
] | 2015-12-16 | [
[
"Haro",
"J.",
""
],
[
"Makarenko",
"A. N.",
""
],
[
"Myagky",
"A. N.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | We develop a Gauss-Bonnet extension of Loop Quantum Cosmology, by introducing holonomy corrections in modified $F(\mathcal{G})$ theories of gravity. Within the context of our formalism, we provide a perturbative expansion in the critical density, a parameter characteristic of Loop Quantum Gravity theories, and we resul... |
2209.02757 | Rahul Kashyap | Rahul Kashyap, Arnab Dhani, Bangalore Sathyaprakash | Systematic errors due to quasi-universal relations in binary neutron
stars and their correction for unbiased model selection | accepted PRD | Phys. Rev. D 106, 123001 Published 1 December 2022 | 10.1103/PhysRevD.106.123001 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inference of the equation-of-state (EoS) of dense nuclear matter in
neutron-star cores is a principal science goal of X-ray and gravitational-wave
observations of neutron stars. In particular, gravitational-wave observations
provide an independent probe of the properties of bulk matter in neutron star
cores that can ... | [
{
"created": "Tue, 6 Sep 2022 18:23:49 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jan 2023 19:04:11 GMT",
"version": "v2"
}
] | 2023-01-25 | [
[
"Kashyap",
"Rahul",
""
],
[
"Dhani",
"Arnab",
""
],
[
"Sathyaprakash",
"Bangalore",
""
]
] | Inference of the equation-of-state (EoS) of dense nuclear matter in neutron-star cores is a principal science goal of X-ray and gravitational-wave observations of neutron stars. In particular, gravitational-wave observations provide an independent probe of the properties of bulk matter in neutron star cores that can th... |
1106.5183 | Chen Songbai | Songbai Chen, Jiliang Jing | Thin accretion disk around a Kaluza-Klein black hole with squashed
horizons | 11pages, 4 figures, Accepted for publication in PLB | Phys. Lett. B 704 (2011) 641 | 10.1016/j.physletb.2011.09.071 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the accretion process in the thin disk around a squashed
Kaluza-Klein black hole and probe the effects of the extra dimensional scale
$\rho_0$ on the physical properties of the disk. Our results show that with the
increase of the parameter $\rho_0$, the energy flux, the conversion efficiency,
the radiation t... | [
{
"created": "Sun, 26 Jun 2011 02:41:58 GMT",
"version": "v1"
},
{
"created": "Sun, 18 Sep 2011 12:21:16 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Chen",
"Songbai",
""
],
[
"Jing",
"Jiliang",
""
]
] | We study the accretion process in the thin disk around a squashed Kaluza-Klein black hole and probe the effects of the extra dimensional scale $\rho_0$ on the physical properties of the disk. Our results show that with the increase of the parameter $\rho_0$, the energy flux, the conversion efficiency, the radiation tem... |
gr-qc/0508126 | Francesco Cianfrani dr | F. Cianfrani, A. Marrocco, G. Montani | Gauge theories as a geometrical issue of a Kaluza-Klein framework | 37 pages, no figures | Int.J.Mod.Phys. D14 (2005) 1195-1231 | 10.1142/S0218271805006900 | null | gr-qc hep-th | null | We present a geometrical unification theory in a Kaluza-Klein approach that
achieve the geometrization of a generic gauge theory bosonic component.
We show how it is possible to derive the gauge charge conservation from the
invariance of the model under extra-dimensional translations and to geometrize
gauge connect... | [
{
"created": "Wed, 31 Aug 2005 15:28:56 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Nov 2005 13:21:09 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Cianfrani",
"F.",
""
],
[
"Marrocco",
"A.",
""
],
[
"Montani",
"G.",
""
]
] | We present a geometrical unification theory in a Kaluza-Klein approach that achieve the geometrization of a generic gauge theory bosonic component. We show how it is possible to derive the gauge charge conservation from the invariance of the model under extra-dimensional translations and to geometrize gauge connections... |
1901.04674 | Sanved Kolekar | Kajol Paithankar and Sanved Kolekar | Bound on Rindler trajectories in Black Hole spacetime | v1. 24 Pages, 9 Figures v2. some discussion added, matches published
version | Phys. Rev. D 99, 064012 (2019) | 10.1103/PhysRevD.99.064012 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate radial Rindler trajectories in a static spherically symmetric
black hole spacetime. We assume the trajectory to remain linearly uniformly
accelerated throughout its motion, in the sense of the curved spacetime
generalisation of the Letaw-Frenet equations. For the Schwarzschild spacetime,
we arrive at a... | [
{
"created": "Tue, 15 Jan 2019 06:24:46 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Mar 2019 12:51:17 GMT",
"version": "v2"
}
] | 2019-03-28 | [
[
"Paithankar",
"Kajol",
""
],
[
"Kolekar",
"Sanved",
""
]
] | We investigate radial Rindler trajectories in a static spherically symmetric black hole spacetime. We assume the trajectory to remain linearly uniformly accelerated throughout its motion, in the sense of the curved spacetime generalisation of the Letaw-Frenet equations. For the Schwarzschild spacetime, we arrive at a b... |
gr-qc/9703082 | Edgardo S. Cheb-Terrab | E.S. Cheb-Terrab (1 and 2), L.G.S. Duarte (1), L.A.C.P. da Mota (1)
((1) SCG/Theor.Phys, UERJ-Brazil, (2) SCG/Fac.Math, U.Waterloo-Canada) | Computer Algebra Solving of Second Order ODEs Using Symmetry Methods | 24 pages, LaTeX, Soft-package (On-Line help) and sample MapleV
sessions available at: http://dft.if.uerj.br/odetools.htm or
http://lie.uwaterloo.ca/odetools.htm | Computer Physics Communications 108 (1998) 90 | 10.1016/S0010-4655(97)00132-X | null | gr-qc | null | An update of the ODEtools Maple package, for the analytical solving of 1st
and 2nd order ODEs using Lie group symmetry methods, is presented. The set of
routines includes an ODE-solver and user-level commands realizing most of the
relevant steps of the symmetry scheme. The package also includes commands for
testing t... | [
{
"created": "Thu, 27 Mar 1997 12:20:16 GMT",
"version": "v1"
},
{
"created": "Fri, 29 May 1998 00:27:54 GMT",
"version": "v2"
}
] | 2009-10-30 | [
[
"Cheb-Terrab",
"E. S.",
"",
"1 and 2"
],
[
"Duarte",
"L. G. S.",
"",
"SCG/Theor.Phys, UERJ-Brazil"
],
[
"da Mota",
"L. A. C. P.",
"",
"SCG/Theor.Phys, UERJ-Brazil"
]
] | An update of the ODEtools Maple package, for the analytical solving of 1st and 2nd order ODEs using Lie group symmetry methods, is presented. The set of routines includes an ODE-solver and user-level commands realizing most of the relevant steps of the symmetry scheme. The package also includes commands for testing the... |
2312.11998 | Valentin Boyanov | Valentin Boyanov, Vitor Cardoso, Kyriakos Destounis, Jos\'e Luis
Jaramillo, Rodrigo Panosso Macedo | Structural aspects of the anti-de Sitter black hole pseudospectrum | 20 pages, 8 figures; v2 includes minor changes | null | 10.1103/PhysRevD.109.064068 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Black holes in anti-de Sitter spacetime provide an important testing ground
for both gravitational and field-theoretic phenomena. In particular, the study
of perturbations can be useful to further our understanding regarding certain
physical processes, such as superradiance, or the dynamics of strongly coupled
confor... | [
{
"created": "Tue, 19 Dec 2023 09:40:36 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Mar 2024 14:32:01 GMT",
"version": "v2"
}
] | 2024-03-27 | [
[
"Boyanov",
"Valentin",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Destounis",
"Kyriakos",
""
],
[
"Jaramillo",
"José Luis",
""
],
[
"Macedo",
"Rodrigo Panosso",
""
]
] | Black holes in anti-de Sitter spacetime provide an important testing ground for both gravitational and field-theoretic phenomena. In particular, the study of perturbations can be useful to further our understanding regarding certain physical processes, such as superradiance, or the dynamics of strongly coupled conforma... |
1005.2073 | Lorenzo Iorio | Lorenzo Iorio | How accurate is the cancelation of the first even zonal harmonic of the
geopotential in the present and future LAGEOS-based Lense-Thirring tests? | LaTex2e, 12 pages, 3 tables, no figures. Final version matching the
one at press in General Relativity and Gravitation (GRG). Some typos fixed
and links updated | Gen.Rel.Grav.43:1697-1706,2011 | 10.1007/s10714-011-1151-4 | null | gr-qc astro-ph.EP physics.geo-ph physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The strategy followed so far in the performed or proposed tests of the
general relativistic Lense-Thirring effect in the gravitational field of the
Earth with laser-ranged satellites of LAGEOS type relies upon the cancelation
of the disturbing huge precessions induced by the first even zonal harmonic
coefficient J_2 ... | [
{
"created": "Wed, 12 May 2010 12:41:50 GMT",
"version": "v1"
},
{
"created": "Tue, 25 May 2010 15:54:51 GMT",
"version": "v2"
},
{
"created": "Mon, 17 Jan 2011 19:31:39 GMT",
"version": "v3"
},
{
"created": "Thu, 3 Feb 2011 18:40:24 GMT",
"version": "v4"
}
] | 2011-05-06 | [
[
"Iorio",
"Lorenzo",
""
]
] | The strategy followed so far in the performed or proposed tests of the general relativistic Lense-Thirring effect in the gravitational field of the Earth with laser-ranged satellites of LAGEOS type relies upon the cancelation of the disturbing huge precessions induced by the first even zonal harmonic coefficient J_2 of... |
gr-qc/9803028 | Michele Maggiore | Michele Maggiore | High-Energy Physics with Gravitational-Wave Experiments | 26 pages, Latex, 1 figure | null | null | IFUP-TH/58-97, VIR-NOT-PIS-1390-113 | gr-qc astro-ph hep-ph hep-th | null | We discuss the possible relevance of gravitational-wave (GW) experiments for
physics at very high energy. We examine whether, from the experience gained
with the computations of various specific relic GW backgrounds, we can extract
statements and order of magnitude estimates that are as much as possible
model-indepen... | [
{
"created": "Sat, 7 Mar 1998 11:38:58 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Maggiore",
"Michele",
""
]
] | We discuss the possible relevance of gravitational-wave (GW) experiments for physics at very high energy. We examine whether, from the experience gained with the computations of various specific relic GW backgrounds, we can extract statements and order of magnitude estimates that are as much as possible model-independe... |
gr-qc/0401077 | Jian Qi Shen | Jian Qi Shen | Comoving suppression mechanism and cosmological constant problem | 4 pages, Latex | null | null | null | gr-qc | null | In this paper, we assume that the observer is fixed in a comoving frame of
reference with $g_{00}=\frac{\lambda}{\Lambda}$, where $\lambda$ and $\Lambda$
denote the comoving parameter and the cosmological constant, respectively. By
using the {\it comoving suppression mechanism} and {\it Mach's principle} (the
latter ... | [
{
"created": "Sat, 17 Jan 2004 09:08:17 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Shen",
"Jian Qi",
""
]
] | In this paper, we assume that the observer is fixed in a comoving frame of reference with $g_{00}=\frac{\lambda}{\Lambda}$, where $\lambda$ and $\Lambda$ denote the comoving parameter and the cosmological constant, respectively. By using the {\it comoving suppression mechanism} and {\it Mach's principle} (the latter of... |
gr-qc/0408087 | Veronika Kurbanova | Alexander Balakin and Veronika Kurbanova | Anomalous Polarization-Curvature Interaction in a Gravitational-Wave
Field | 9 pages, no figures | Grav.Cosmol. 10 (2004) 98-106 | null | null | gr-qc astro-ph hep-ph hep-th | null | An exact solution to the dynamic equations for a massive boson traveling in a
pp-wave gravitational background under the influence of the force induced by
curvature, is presented. We focus on the effect of anomalous
polarization-curvature interaction and consider models in which the coupling
constant of such an inter... | [
{
"created": "Thu, 26 Aug 2004 13:53:21 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Balakin",
"Alexander",
""
],
[
"Kurbanova",
"Veronika",
""
]
] | An exact solution to the dynamic equations for a massive boson traveling in a pp-wave gravitational background under the influence of the force induced by curvature, is presented. We focus on the effect of anomalous polarization-curvature interaction and consider models in which the coupling constant of such an interac... |
0907.3180 | Kuang Xiaomei | Xiao-Mei Kuang, Yi Ling | Viscous gravitational aether and the cosmological constant problem | 12 pages, 2 figures | JCAP 0910:024,2009 | 10.1088/1475-7516/2009/10/024 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently a notion of gravitational aether is advocated to solve the
cosmological constant problem.Through the modification of the source of gravity
one finds that the effective Newton's constant is source dependent so as to
provide a simple but consistent way to decouple gravity from the vacuum
energy.However,in the ... | [
{
"created": "Sat, 18 Jul 2009 08:43:19 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Oct 2009 08:46:38 GMT",
"version": "v2"
}
] | 2009-11-09 | [
[
"Kuang",
"Xiao-Mei",
""
],
[
"Ling",
"Yi",
""
]
] | Recently a notion of gravitational aether is advocated to solve the cosmological constant problem.Through the modification of the source of gravity one finds that the effective Newton's constant is source dependent so as to provide a simple but consistent way to decouple gravity from the vacuum energy.However,in the or... |
0811.0188 | Jonathan R. Gair | Jonathan R Gair | Probing black holes at low redshift using LISA EMRI observations | 14 pages, 5 figures, accepted for publication in Class. Quantum Grav.
(proceedings of 7th LISA Symposium); v2 includes several revisions in
response to referees' comments plus results for a pessimistic detector
configuration | Class. Quantum Grav. 26 094034 (2009) | 10.1088/0264-9381/26/9/094034 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the most exciting potential sources of gravitational waves for the
Laser Interferometer Space Antenna (LISA) are the inspirals of approximately
solar mass compact objects into massive black holes in the centres of galaxies
- extreme mass ratio inspirals (EMRIs). LISA should observe between a few tens
and a few... | [
{
"created": "Sun, 2 Nov 2008 20:25:44 GMT",
"version": "v1"
},
{
"created": "Sun, 8 Mar 2009 23:03:39 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Gair",
"Jonathan R",
""
]
] | One of the most exciting potential sources of gravitational waves for the Laser Interferometer Space Antenna (LISA) are the inspirals of approximately solar mass compact objects into massive black holes in the centres of galaxies - extreme mass ratio inspirals (EMRIs). LISA should observe between a few tens and a few h... |
gr-qc/0605062 | Leonardo Augusto Pach\'on Contreras | Leonardo A. Pachon and Jorge A. Rueda | About Poynting vector in axially symmetric stationary spacetimes | Latex, 2 pages | null | null | null | gr-qc | null | We dispose of some objections raised by Manko et al. (gr-qc/0604091) on a
recently published paper on the role of Poynting vector in the ocurrence of
vorticity in electrovaccum spacetimes (2006, Class. Quantum Grav. 23, 2395)
| [
{
"created": "Wed, 10 May 2006 23:32:02 GMT",
"version": "v1"
},
{
"created": "Fri, 12 May 2006 15:56:50 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Pachon",
"Leonardo A.",
""
],
[
"Rueda",
"Jorge A.",
""
]
] | We dispose of some objections raised by Manko et al. (gr-qc/0604091) on a recently published paper on the role of Poynting vector in the ocurrence of vorticity in electrovaccum spacetimes (2006, Class. Quantum Grav. 23, 2395) |
1904.12861 | Matthijs van der Wild | Christian F. Steinwachs, Matthijs L. van der Wild | Quantum gravitational corrections to the inflationary power spectra in
scalar-tensor theories | 35 pages, 1 figure | null | 10.1088/1361-6382/ab3a1b | FR-Pheno-2019-006 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the first quantum gravitational corrections to the inflationary
power spectra for a general single-field scalar-tensor theory which includes a
non-minimal coupling to gravity, a non-standard scalar kinetic term and an
arbitrary potential of the scalar field. We obtain these corrections from a
semiclassical ... | [
{
"created": "Mon, 29 Apr 2019 18:00:01 GMT",
"version": "v1"
}
] | 2020-01-08 | [
[
"Steinwachs",
"Christian F.",
""
],
[
"van der Wild",
"Matthijs L.",
""
]
] | We derive the first quantum gravitational corrections to the inflationary power spectra for a general single-field scalar-tensor theory which includes a non-minimal coupling to gravity, a non-standard scalar kinetic term and an arbitrary potential of the scalar field. We obtain these corrections from a semiclassical ex... |
gr-qc/0203094 | Marie-Noelle Celerier | Marie-Noelle Celerier (Observatoire de Paris-Meudon), Peter Szekeres
(University of Adelaide) | Timelike and null focusing singularities in spherical symmetry: a
solution to the cosmological horizon problem and a challenge to the cosmic
censorship hypothesis | 26 pages, 2 figures, LaTeX file. Submitted to Phys. Rev. D | Phys.Rev.D65:123516,2002 | 10.1103/PhysRevD.65.123516 | null | gr-qc | null | Extending the study of spherically symmetric metrics satisfying the dominant
energy condition and exhibiting singularities of power-law type initiated in
SI93, we identify two classes of peculiar interest: focusing timelike
singularity solutions with the stress-energy tensor of a radiative perfect
fluid (equation of ... | [
{
"created": "Tue, 26 Mar 2002 16:16:26 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Celerier",
"Marie-Noelle",
"",
"Observatoire de Paris-Meudon"
],
[
"Szekeres",
"Peter",
"",
"University of Adelaide"
]
] | Extending the study of spherically symmetric metrics satisfying the dominant energy condition and exhibiting singularities of power-law type initiated in SI93, we identify two classes of peculiar interest: focusing timelike singularity solutions with the stress-energy tensor of a radiative perfect fluid (equation of st... |
1003.3287 | Myungseok Eune | Wontae Kim, Young-Jai Park, Myungseok Yoon | Entropy of the FRW universe based on the generalized uncertainty
principle | 10 pages, accepted in Modern Physics Letters A | Mod.Phys.Lett.A25:1267-1274,2010 | 10.1142/S0217732310033049 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The statistical entropy of the FRW universe described by time-dependent
metric is newly calculated using the brick wall method based on the general
uncertainty principle with the minimal length. We can determine the minimal
length with the Plank scale to obtain the entropy proportional to the area of
the cosmological... | [
{
"created": "Wed, 17 Mar 2010 03:25:49 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Aug 2010 07:42:00 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Kim",
"Wontae",
""
],
[
"Park",
"Young-Jai",
""
],
[
"Yoon",
"Myungseok",
""
]
] | The statistical entropy of the FRW universe described by time-dependent metric is newly calculated using the brick wall method based on the general uncertainty principle with the minimal length. We can determine the minimal length with the Plank scale to obtain the entropy proportional to the area of the cosmological a... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.