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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1511.05482 | Mikhail Gorbatenko | M.V.Gorbatenko, V.P.Neznamov, E.Yu.Popov, I.I.Safronov | Cosmic censorship and stationary states of half-spin particles in the
field of Reissner-Nordstroem naked singularity | 20 pages, 3 figures | null | 10.1088/1742-6596/678/1/012036 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper explores quantum mechanics of half-spin particle motion in the
field of Reissner-Nordstroem (RN) naked singularity. It is shown that for any
quantum mechanical Dirac particle, irrespective of availability and sign of its
electrical charge, the RN naked singularity is separated by an infinitely high
positive... | [
{
"created": "Tue, 17 Nov 2015 17:35:50 GMT",
"version": "v1"
}
] | 2016-02-17 | [
[
"Gorbatenko",
"M. V.",
""
],
[
"Neznamov",
"V. P.",
""
],
[
"Popov",
"E. Yu.",
""
],
[
"Safronov",
"I. I.",
""
]
] | The paper explores quantum mechanics of half-spin particle motion in the field of Reissner-Nordstroem (RN) naked singularity. It is shown that for any quantum mechanical Dirac particle, irrespective of availability and sign of its electrical charge, the RN naked singularity is separated by an infinitely high positive p... |
1501.03522 | Stanley Deser | S. Deser | The legacy of ADM | Invited paper for a special issue of Physica Scripta on ADM and
SUGRA, in memoriam Richard Arnowitt. Replacement is published version | Phys. Scr. 90(2015)068006 | 10.1088/0031-8949/90/6/068006 | BRX-TH-6289, CALT-TH-2015-003 | gr-qc hep-th physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This tribute to the memory of my old friend and collaborator, Richard
Arnowitt, focuses on the history, results and physical significance of the
Arnowitt-Deser-Misner formulation of General Relativity, starting from its
birth in 1958-9 through its completion, in a series of over a dozen papers, in
1962-3. A few of it... | [
{
"created": "Wed, 14 Jan 2015 21:43:36 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Jan 2015 16:10:34 GMT",
"version": "v2"
}
] | 2015-05-20 | [
[
"Deser",
"S.",
""
]
] | This tribute to the memory of my old friend and collaborator, Richard Arnowitt, focuses on the history, results and physical significance of the Arnowitt-Deser-Misner formulation of General Relativity, starting from its birth in 1958-9 through its completion, in a series of over a dozen papers, in 1962-3. A few of its ... |
1603.04373 | Thomas W. Baumgarte | Thomas W. Baumgarte and Carsten Gundlach | Critical collapse of rotating radiation fluids | 5 pages, 4 figures; version accepted for publication in PRL | Phys. Rev. Lett. 116, 221103 (2016) | 10.1103/PhysRevLett.116.221103 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present results from the first fully relativistic simulations of the
critical collapse of rotating radiation fluids. We observe critical scaling
both in subcritical evolutions, in which case the fluid disperses to infinity
and leaves behind flat space, and in supercritical evolutions that lead to the
formation of ... | [
{
"created": "Mon, 14 Mar 2016 18:07:33 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Jun 2016 13:05:41 GMT",
"version": "v2"
}
] | 2016-06-14 | [
[
"Baumgarte",
"Thomas W.",
""
],
[
"Gundlach",
"Carsten",
""
]
] | We present results from the first fully relativistic simulations of the critical collapse of rotating radiation fluids. We observe critical scaling both in subcritical evolutions, in which case the fluid disperses to infinity and leaves behind flat space, and in supercritical evolutions that lead to the formation of bl... |
2302.08334 | Sjors Heefer | Sjors Heefer and Andrea Fuster | Finsler gravitational waves of $(\alpha,\beta)$-type and their
observational signature | null | null | null | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We introduce a new class of $(\alpha,\beta)$-type exact solutions in Finsler
gravity closely related to the well-known pp-waves in general relativity. Our
class contains most of the exact solutions currently known in the literature as
special cases. The linearized versions of these solutions may be interpretted
as Fi... | [
{
"created": "Thu, 16 Feb 2023 14:37:28 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Aug 2023 12:36:45 GMT",
"version": "v2"
}
] | 2023-08-08 | [
[
"Heefer",
"Sjors",
""
],
[
"Fuster",
"Andrea",
""
]
] | We introduce a new class of $(\alpha,\beta)$-type exact solutions in Finsler gravity closely related to the well-known pp-waves in general relativity. Our class contains most of the exact solutions currently known in the literature as special cases. The linearized versions of these solutions may be interpretted as Fins... |
gr-qc/9510058 | Adrian Ottewill | Bruce Allen, Bernard S. Kay and Adrian C. Ottewill | Long Range Effects of Cosmic String Structure | 25 pages, RevTeX with epsfig, 3 Postscript figures | Phys.Rev. D53 (1996) 6829-6841 | 10.1103/PhysRevD.53.6829 | null | gr-qc | null | We combine and further develop ideas and techniques of Allen \& Ottewill,
Phys. Rev.D, {\bf 42}, 2669 (1990) and Kay \& Studer Commun. Math. Phys., {\bf
139}, 103 (1991) for calculating the long range effects of cosmic string cores
on classical and quantum field quantities far from an (infinitely long,
straight) cosm... | [
{
"created": "Fri, 27 Oct 1995 10:09:27 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Allen",
"Bruce",
""
],
[
"Kay",
"Bernard S.",
""
],
[
"Ottewill",
"Adrian C.",
""
]
] | We combine and further develop ideas and techniques of Allen \& Ottewill, Phys. Rev.D, {\bf 42}, 2669 (1990) and Kay \& Studer Commun. Math. Phys., {\bf 139}, 103 (1991) for calculating the long range effects of cosmic string cores on classical and quantum field quantities far from an (infinitely long, straight) cosmic... |
gr-qc/9906116 | Gilad Gour | Gilad Gour | Quantum Mechanics of a Black Hole | RevTex, 30 pages, Accepted for publication in Physical Review D | Phys.Rev. D61 (2000) 124007 | 10.1103/PhysRevD.61.124007 | null | gr-qc hep-th quant-ph | null | Beginning with Bekenstein, many authors have considered a uniformly spaced
discrete quantum spectrum for black hole horizon area. It is also believed that
the huge degeneracy of these area levels corresponds to the notion of black
hole entropy. Starting from these two assumptions we here infer the algebra of
a Schwar... | [
{
"created": "Tue, 29 Jun 1999 10:55:20 GMT",
"version": "v1"
},
{
"created": "Sun, 13 Feb 2000 10:47:43 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Gour",
"Gilad",
""
]
] | Beginning with Bekenstein, many authors have considered a uniformly spaced discrete quantum spectrum for black hole horizon area. It is also believed that the huge degeneracy of these area levels corresponds to the notion of black hole entropy. Starting from these two assumptions we here infer the algebra of a Schwarzs... |
1610.04847 | Bogeun Gwak | Bogeun Gwak, Daeho Ro | Spin Interaction under the Collision of Two Kerr-(anti-)de Sitter Black
Holes | 12 pages, 8 figures | Entropy 19 (2017) no. 12 | 10.3390/e19120691 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have investigated spin interaction under the collision of Kerr-(anti-)de
Sitter black holes. The potential of a spin interaction is dependent on the
relative rotating directions of the black holes, and this potential can be
released as gravitational radiation under the collision. The radiation depends
on the cosmo... | [
{
"created": "Sun, 16 Oct 2016 12:18:13 GMT",
"version": "v1"
}
] | 2017-12-19 | [
[
"Gwak",
"Bogeun",
""
],
[
"Ro",
"Daeho",
""
]
] | We have investigated spin interaction under the collision of Kerr-(anti-)de Sitter black holes. The potential of a spin interaction is dependent on the relative rotating directions of the black holes, and this potential can be released as gravitational radiation under the collision. The radiation depends on the cosmolo... |
0811.3798 | Rebecca Grossman | Rebecca Grossman and Janna Levin | Dynamics of Black Hole Pairs II: Spherical Orbits and the Homoclinic
Limit of Zoom-Whirliness | 16 pages, several figures | Phys.Rev.D79:043017,2009 | 10.1103/PhysRevD.79.043017 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spinning black hole pairs exhibit a range of complicated dynamical behaviors.
An interest in eccentric and zoom-whirl orbits has ironically inspired the
focus of this paper: the constant radius orbits. When black hole spins are
misaligned, the constant radius orbits are not circles but rather lie on the
surface of a ... | [
{
"created": "Mon, 24 Nov 2008 03:36:30 GMT",
"version": "v1"
}
] | 2009-03-12 | [
[
"Grossman",
"Rebecca",
""
],
[
"Levin",
"Janna",
""
]
] | Spinning black hole pairs exhibit a range of complicated dynamical behaviors. An interest in eccentric and zoom-whirl orbits has ironically inspired the focus of this paper: the constant radius orbits. When black hole spins are misaligned, the constant radius orbits are not circles but rather lie on the surface of a sp... |
1705.10058 | Bertrand Chauvineau | Bertrand Chauvineau | On gravitational radiation in Brans-Dicke gravity | 14 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Brans-Dicke gravity admits spherical solutions describing naked singularities
rather than black holes. Depending on some parameters entering such a solution,
stable circular orbits exist for all radius. One argues that, despite the fact
that the naked singularity is an infinite redshift location, the far observed
orb... | [
{
"created": "Mon, 29 May 2017 07:43:50 GMT",
"version": "v1"
}
] | 2017-05-30 | [
[
"Chauvineau",
"Bertrand",
""
]
] | Brans-Dicke gravity admits spherical solutions describing naked singularities rather than black holes. Depending on some parameters entering such a solution, stable circular orbits exist for all radius. One argues that, despite the fact that the naked singularity is an infinite redshift location, the far observed orbit... |
1508.06910 | Li-Xin Li | Li-Xin Li | Electrodynamics on Cosmological Scales | 23 pages, including 1 figure. Version matching publication in GRG | Gen. Relativ. Gravit. 48, 28 (2016) | 10.1007/s10714-016-2028-3 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Maxwell's equations cannot describe a homogeneous and isotropic universe with
a uniformly distributed net charge, because the electromagnetic field tensor in
such a universe must be vanishing everywhere. For a closed universe with a
nonzero net charge, Maxwell's equations always fail regardless of the spacetime
symme... | [
{
"created": "Wed, 26 Aug 2015 08:35:51 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Nov 2015 02:40:17 GMT",
"version": "v2"
},
{
"created": "Mon, 29 Feb 2016 02:20:25 GMT",
"version": "v3"
}
] | 2016-03-01 | [
[
"Li",
"Li-Xin",
""
]
] | Maxwell's equations cannot describe a homogeneous and isotropic universe with a uniformly distributed net charge, because the electromagnetic field tensor in such a universe must be vanishing everywhere. For a closed universe with a nonzero net charge, Maxwell's equations always fail regardless of the spacetime symmetr... |
2012.12902 | J\'er\'emy Auffinger | J\'er\'emy Auffinger, Alexandre Arbey | BlackHawk: A tool for computing Black Hole evaporation | 11 pages, 3 figures. To be published in the proceedings of "Tools for
High Energy Physics and Cosmology - TOOLS2020", Lyon, France | null | null | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We present the public code \texttt{BlackHawk}, a powerful tool to compute the
evaporation of any distribution of Schwarzschild and Kerr Black Holes and the
emission spectra of Hawking radiation.
| [
{
"created": "Wed, 23 Dec 2020 19:00:02 GMT",
"version": "v1"
}
] | 2020-12-25 | [
[
"Auffinger",
"Jérémy",
""
],
[
"Arbey",
"Alexandre",
""
]
] | We present the public code \texttt{BlackHawk}, a powerful tool to compute the evaporation of any distribution of Schwarzschild and Kerr Black Holes and the emission spectra of Hawking radiation. |
1005.1000 | Jiang Qing-Quan | Qing-Quan Jiang and Xu Cai | Remarks on self-interaction correction to black hole radiation | 14 pages | JHEP 0911:110,2009 | 10.1088/1126-6708/2009/11/110 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the work [P. Kraus and F. Wilczek, \textit{Self-interaction correction to
black hole radiation, Nucl. Phys.} B433 (1995) 403], it has been pointed out
that the self-gravitation interaction would modify the black hole radiation so
that it is no longer thermal, where it is, however, corrected in an approximate
way a... | [
{
"created": "Thu, 6 May 2010 13:53:42 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Jiang",
"Qing-Quan",
""
],
[
"Cai",
"Xu",
""
]
] | In the work [P. Kraus and F. Wilczek, \textit{Self-interaction correction to black hole radiation, Nucl. Phys.} B433 (1995) 403], it has been pointed out that the self-gravitation interaction would modify the black hole radiation so that it is no longer thermal, where it is, however, corrected in an approximate way and... |
1907.02928 | Spiros Cotsakis | John D. Barrow, Spiros Cotsakis | Inflation Without a Trace of Lambda | v2: 26 pages, new extended version, additional conclusions | Eur. Phys. J. C80 (2020) 839 | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalise Einstein's formulation of the traceless Einstein equations to
$f(R)$ gravity theories. In the case of the vacuum traceless Einstein
equations, we show that a non-constant Weyl tensor leads via a conformal
transformation to a dimensionally homogeneous (`no-scale') theory in the
conformal frame with a sca... | [
{
"created": "Fri, 5 Jul 2019 16:52:33 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Jul 2020 16:58:40 GMT",
"version": "v2"
}
] | 2020-09-15 | [
[
"Barrow",
"John D.",
""
],
[
"Cotsakis",
"Spiros",
""
]
] | We generalise Einstein's formulation of the traceless Einstein equations to $f(R)$ gravity theories. In the case of the vacuum traceless Einstein equations, we show that a non-constant Weyl tensor leads via a conformal transformation to a dimensionally homogeneous (`no-scale') theory in the conformal frame with a scala... |
2309.04238 | David Katona | David Katona and James Lucietti | Uniqueness of the extremal Schwarzschild de Sitter spacetime | v2: 19 pages, 1 figure; accepted version. Corrected first order
deformations for negative cosmological constant case (now Proposition 2) and
added Appendix B, main results unchanged | Lett Math Phys 114, 18 (2024) | 10.1007/s11005-023-01761-0 | null | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that any analytic vacuum spacetime with a positive cosmological
constant in four and higher dimensions, that contains a static extremal Killing
horizon with a maximally symmetric compact cross-section, must be locally
isometric to either the extremal Schwarzschild de Sitter solution or its
near-horizon geome... | [
{
"created": "Fri, 8 Sep 2023 10:00:55 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Jan 2024 15:28:46 GMT",
"version": "v2"
}
] | 2024-01-22 | [
[
"Katona",
"David",
""
],
[
"Lucietti",
"James",
""
]
] | We prove that any analytic vacuum spacetime with a positive cosmological constant in four and higher dimensions, that contains a static extremal Killing horizon with a maximally symmetric compact cross-section, must be locally isometric to either the extremal Schwarzschild de Sitter solution or its near-horizon geometr... |
1107.4556 | Mayeul Arminjon | Mayeul Arminjon | A solution of the non-uniqueness problem of the Dirac Hamiltonian and
energy operators | 32 pages (standard 12pt), including appendices. v2: a minor new
remark on pp. 29-30 | Ann. Phys. (Berlin) 523, No. 12, 1008-1028 (2011) | 10.1002/andp.201100166 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a general spacetime, the possible choices for the field of orthonormal
tetrads lead (in standard conditions) to equivalent Dirac equations. However,
the Hamiltonian operator is got from rewriting the Dirac equation in a form
adapted to a particular reference frame, or class of coordinate systems. That
rewriting do... | [
{
"created": "Fri, 22 Jul 2011 16:00:07 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Jul 2011 16:26:49 GMT",
"version": "v2"
}
] | 2011-12-06 | [
[
"Arminjon",
"Mayeul",
""
]
] | In a general spacetime, the possible choices for the field of orthonormal tetrads lead (in standard conditions) to equivalent Dirac equations. However, the Hamiltonian operator is got from rewriting the Dirac equation in a form adapted to a particular reference frame, or class of coordinate systems. That rewriting does... |
1812.11463 | Chen Songbai | Fen Long, Songbai Chen, Jieci Wang, Jiliang Jing | Electromagnetic emissions from near-horizon region of an extreme
Kerr-Taub-Nut black hole | 18 pages, 7 figures | Eur. Phys. J. C (2019) 79: 466 | 10.1140/epjc/s10052-019-6989-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have studied electromagnetic line emissions from near-horizon region in
the extremal Kerr-Taub-NUT black hole spacetime and then probe the effects of
NUT charge on the electromagnetic line emissions. Due to the presence of the
NUT charge, the equatorial plane is no more a symmetry plane of the KTN
spacetime, which... | [
{
"created": "Sun, 30 Dec 2018 03:32:40 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Apr 2019 10:14:20 GMT",
"version": "v2"
},
{
"created": "Sun, 9 Jun 2019 00:34:51 GMT",
"version": "v3"
}
] | 2019-06-11 | [
[
"Long",
"Fen",
""
],
[
"Chen",
"Songbai",
""
],
[
"Wang",
"Jieci",
""
],
[
"Jing",
"Jiliang",
""
]
] | We have studied electromagnetic line emissions from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime and then probe the effects of NUT charge on the electromagnetic line emissions. Due to the presence of the NUT charge, the equatorial plane is no more a symmetry plane of the KTN spacetime, which l... |
1011.5593 | Matt Visser | Carlos Barcelo (IAA-CSIC, Granada), Stefano Liberati (SISSA, Trieste),
Sebastiano Sonego (Universita di Udine), Matt Visser (Victoria University of
Wellington) | Minimal conditions for the existence of a Hawking-like flux | 4 pages. Uses revtex4-1 | Phys.Rev.D83:041501,2011 | 10.1103/PhysRevD.83.041501 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the minimal conditions that an asymptotically flat general
relativistic spacetime must satisfy in order for a Hawking-like Planckian flux
of particles to arrive at future null infinity. We demonstrate that there is no
requirement that any sort of horizon form anywhere in the spacetime. We find
that the... | [
{
"created": "Thu, 25 Nov 2010 10:56:54 GMT",
"version": "v1"
}
] | 2011-03-21 | [
[
"Barcelo",
"Carlos",
"",
"IAA-CSIC, Granada"
],
[
"Liberati",
"Stefano",
"",
"SISSA, Trieste"
],
[
"Sonego",
"Sebastiano",
"",
"Universita di Udine"
],
[
"Visser",
"Matt",
"",
"Victoria University of\n Wellington"
]
] | We investigate the minimal conditions that an asymptotically flat general relativistic spacetime must satisfy in order for a Hawking-like Planckian flux of particles to arrive at future null infinity. We demonstrate that there is no requirement that any sort of horizon form anywhere in the spacetime. We find that the i... |
gr-qc/9601027 | Malcolm Tobias | Jayashree Balakrishna, Gregory Daues, Edward Seidel, Wai-Mo Suen,
Malcolm Tobias, Edward Wang | Coordinate Conditions and Their Implementation in 3D Numerical
Relativity | 10 pages, 3 postscript figures | Class.Quant.Grav.13:L135-L142,1996 | 10.1088/0264-9381/13/12/001 | wugrav-95-20 | gr-qc | null | We put forth a few ideas on coordinate conditions and their implementation in
numerical relativity. Coordinate conditions are important for the long time
scale simulations of relativistic systems, e.g., for the determination of
gravitational waveforms from astrophysical events to be measured by LIGO/VIRGO.
We demonst... | [
{
"created": "Wed, 17 Jan 1996 15:03:44 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Balakrishna",
"Jayashree",
""
],
[
"Daues",
"Gregory",
""
],
[
"Seidel",
"Edward",
""
],
[
"Suen",
"Wai-Mo",
""
],
[
"Tobias",
"Malcolm",
""
],
[
"Wang",
"Edward",
""
]
] | We put forth a few ideas on coordinate conditions and their implementation in numerical relativity. Coordinate conditions are important for the long time scale simulations of relativistic systems, e.g., for the determination of gravitational waveforms from astrophysical events to be measured by LIGO/VIRGO. We demonstra... |
gr-qc/0209084 | Lior M. Burko | Lior M. Burko | Black hole singularities: a new critical phenomenon | 4 pages, 5 eps figures; An Erratum is added. The main conclusions of
the original Letter are unchanged | Phys.Rev.Lett.90:121101,2003; Erratum-ibid.90:249902,2003 | 10.1103/PhysRevLett.90.121101 | null | gr-qc | null | The singularitiy inside a spherical charged black hole, coupled to a
spherical, massless scalar field is studied numerically. The profile of the
characteristic scalar field was taken to be a power of advanced time with an
exponent $\alpha>0$. A critical exponent $\alpha_{\rm crit}$ exists. For
exponents below the cri... | [
{
"created": "Mon, 23 Sep 2002 19:51:20 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Mar 2003 15:59:52 GMT",
"version": "v2"
},
{
"created": "Thu, 1 May 2003 20:17:28 GMT",
"version": "v3"
}
] | 2010-11-19 | [
[
"Burko",
"Lior M.",
""
]
] | The singularitiy inside a spherical charged black hole, coupled to a spherical, massless scalar field is studied numerically. The profile of the characteristic scalar field was taken to be a power of advanced time with an exponent $\alpha>0$. A critical exponent $\alpha_{\rm crit}$ exists. For exponents below the criti... |
2203.11918 | She-Sheng Xue | She-Sheng Xue | Massive particle pair production and oscillation in Friedman Universe:
dark energy and matter interaction | 20 pages and 3 Figures. arXiv admin note: substantial text overlap
with arXiv:2112.09661 | null | 10.1140/epjc/s10052-023-11195-6 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The classical Friedman equations of time-varying Hubble function $H$,
dark-energy and matter densities couple to quantised field equations for
massive modes $M\gg H$. Numerically solving these equations, we show the
particle-antiparticle pairs production and oscillation in microscopic time
scale ${\mathcal O}(M^{-1})... | [
{
"created": "Tue, 22 Mar 2022 17:39:17 GMT",
"version": "v1"
}
] | 2023-02-01 | [
[
"Xue",
"She-Sheng",
""
]
] | The classical Friedman equations of time-varying Hubble function $H$, dark-energy and matter densities couple to quantised field equations for massive modes $M\gg H$. Numerically solving these equations, we show the particle-antiparticle pairs production and oscillation in microscopic time scale ${\mathcal O}(M^{-1})$.... |
2105.13329 | Rita Teixeira da Costa | Marc Casals and Rita Teixeira da Costa | Hidden spectral symmetries and mode stability of subextremal Kerr(-dS)
black holes | 24 pages, 1 figure; v2: clarification of the proof of Proposition 3.8
and other typos | null | 10.1007/s00220-022-04410-0 | null | gr-qc hep-th math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We uncover hidden spectral symmetries of the Teukolsky equation in Kerr(-de
Sitter) black holes, recently conjectured by Aminov, Grassi and Hatsuda (arXiv:
2006.06111 and arXiv: 2007.07906, 2020) in the zero cosmological constant case.
Using these symmetries, we provide a new, simpler proof of mode stability for
sube... | [
{
"created": "Thu, 27 May 2021 17:38:05 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Apr 2023 13:23:16 GMT",
"version": "v2"
}
] | 2023-05-01 | [
[
"Casals",
"Marc",
""
],
[
"da Costa",
"Rita Teixeira",
""
]
] | We uncover hidden spectral symmetries of the Teukolsky equation in Kerr(-de Sitter) black holes, recently conjectured by Aminov, Grassi and Hatsuda (arXiv: 2006.06111 and arXiv: 2007.07906, 2020) in the zero cosmological constant case. Using these symmetries, we provide a new, simpler proof of mode stability for subext... |
2303.01987 | Alexander Zhidenko | R. A. Konoplya, Z. Stuchlik, A. Zhidenko, A. F. Zinhailo | Quasinormal modes of renormalization group improved Dymnikova regular
black holes | 11 pages, 3 figures, 1 ancillary Mathematica file | Phys. Rev. D 107, 104050 (2023) | 10.1103/PhysRevD.107.104050 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find accurate quasinormal frequencies of a quantum corrected black hole
constructed in the renormalization group theory via the coordinate-independent
iterative procedure, leading to the Dymnikova regular black hole. We show that
while the fundamental mode is only slightly affected by the quantum correction,
the o... | [
{
"created": "Fri, 3 Mar 2023 14:56:35 GMT",
"version": "v1"
},
{
"created": "Fri, 26 May 2023 17:45:36 GMT",
"version": "v2"
}
] | 2023-05-29 | [
[
"Konoplya",
"R. A.",
""
],
[
"Stuchlik",
"Z.",
""
],
[
"Zhidenko",
"A.",
""
],
[
"Zinhailo",
"A. F.",
""
]
] | We find accurate quasinormal frequencies of a quantum corrected black hole constructed in the renormalization group theory via the coordinate-independent iterative procedure, leading to the Dymnikova regular black hole. We show that while the fundamental mode is only slightly affected by the quantum correction, the ove... |
gr-qc/0212099 | null | I-Ching Yang (Dep. of Natural Science Education and Advanced Science
and Technology Research Center, Natl. Taitung Teachers College) and Irina
Radinschi (Dep. of Physics, "Gh. Asachi" Technical U.) | On the Difference of Energy between the Einstein and M{\o}ller
Prescription | 7 pages | Chin.J.Phys. 42 (2004) 40 | null | null | gr-qc | null | In some black hole solutions, these do not exist the same energy-momentum
complexes associated with using definition of Einstein and M{\o}ller in given
coordinates. Here, we consider the difference of energy between the Einstein
and M{\o}ller prescription, and compare it with the energy density of those
black hole so... | [
{
"created": "Tue, 24 Dec 2002 07:40:04 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Yang",
"I-Ching",
"",
"Dep. of Natural Science Education and Advanced Science\n and Technology Research Center, Natl. Taitung Teachers College"
],
[
"Radinschi",
"Irina",
"",
"Dep. of Physics, \"Gh. Asachi\" Technical U."
]
] | In some black hole solutions, these do not exist the same energy-momentum complexes associated with using definition of Einstein and M{\o}ller in given coordinates. Here, we consider the difference of energy between the Einstein and M{\o}ller prescription, and compare it with the energy density of those black hole solu... |
gr-qc/0202072 | Leonid Grishchuk | L. P. Grishchuk | The Early Universe Odyssey With Gravitational Waves | final modifications; to appear in "A Relativistic Spacetime Odyssey",
Eds. I. Ciufolini, D. Dominici, L. Lusanna, World Scientific (2002) | null | 10.1142/9789812791368_0013 | null | gr-qc astro-ph hep-th | null | This contribution summarizes some recent work on gravitational-wave astronomy
and, especially, on the generation and detection of relic gravitational waves.
We begin with a brief discussion of astrophysical sources of gravitational
waves that are likely to be detected first by the coming in operation laser
interferom... | [
{
"created": "Wed, 20 Feb 2002 17:27:35 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Oct 2002 11:59:43 GMT",
"version": "v2"
}
] | 2017-08-23 | [
[
"Grishchuk",
"L. P.",
""
]
] | This contribution summarizes some recent work on gravitational-wave astronomy and, especially, on the generation and detection of relic gravitational waves. We begin with a brief discussion of astrophysical sources of gravitational waves that are likely to be detected first by the coming in operation laser interferomet... |
1407.8028 | Hrvoje Nikolic | H. Nikolic | The trivial solution of the gravitational energy-momentum tensor problem | 6 pages, revised, new references | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the literature one often finds the claim that there is no such thing as an
energy-momentum tensor for the gravitational field, and consequently, that the
total energy-momentum conservation can only be defined in terms of a
gravitational energy-momentum pseudo-tensor. Nevertheless, by relaxing the
assumption that g... | [
{
"created": "Wed, 30 Jul 2014 12:59:19 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Aug 2014 09:54:22 GMT",
"version": "v2"
}
] | 2014-08-08 | [
[
"Nikolic",
"H.",
""
]
] | In the literature one often finds the claim that there is no such thing as an energy-momentum tensor for the gravitational field, and consequently, that the total energy-momentum conservation can only be defined in terms of a gravitational energy-momentum pseudo-tensor. Nevertheless, by relaxing the assumption that gra... |
gr-qc/9909072 | N. K. Dadhich | L.K. Patel, Naresh Dadhich and R. Tikekar | Domain Walls in Kaluza-Klein spacetime | 11 pages, LaTEX version | null | null | IUCAA-39/99 | gr-qc | null | Three families of exact solutions of Einstein field equations are found. Each
family contains three parameters. Two of these families represent thick domain
walls in a five dimensional Kaluza-Klein spacetime. The dynamical behaviour of
our models is briefly discussed. The spacetime in all the cases is found to be
ref... | [
{
"created": "Wed, 22 Sep 1999 11:34:59 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Patel",
"L. K.",
""
],
[
"Dadhich",
"Naresh",
""
],
[
"Tikekar",
"R.",
""
]
] | Three families of exact solutions of Einstein field equations are found. Each family contains three parameters. Two of these families represent thick domain walls in a five dimensional Kaluza-Klein spacetime. The dynamical behaviour of our models is briefly discussed. The spacetime in all the cases is found to be refle... |
1504.04603 | Francisco Lobo | Marzieh Peyravi, Nematollah Riazi, Francisco S. N. Lobo | Soliton models for thick branes | 15 pages, 9 figures. V2: 18 pages; discussion on the brane stability
and references added. Accepted for publication in the European Physical
Journal C | Eur. Phys. J. C 76 (2016) 247 | 10.1140/epjc/s10052-016-4094-9 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we present new soliton solutions for thick branes in $4+1$
dimensions. In particular, we consider brane models based on the sine-Gordon
($SG$), $\varphi^{4}$ and $\varphi^{6}$ scalar fields, which have broken
$Z_{2}$ symmetry in some cases, and are responsible for supporting and
stabilizing the thick br... | [
{
"created": "Fri, 17 Apr 2015 18:48:07 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Apr 2016 14:08:59 GMT",
"version": "v2"
}
] | 2016-05-09 | [
[
"Peyravi",
"Marzieh",
""
],
[
"Riazi",
"Nematollah",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | In this work, we present new soliton solutions for thick branes in $4+1$ dimensions. In particular, we consider brane models based on the sine-Gordon ($SG$), $\varphi^{4}$ and $\varphi^{6}$ scalar fields, which have broken $Z_{2}$ symmetry in some cases, and are responsible for supporting and stabilizing the thick bran... |
1206.4773 | Chad Galley | Chad R. Galley, Adam K. Leibovich, and Ira Z. Rothstein | Reply to "Comment on 'Finite size corrections to the radiation reaction
force in classical electrodynamics'" | 1 page. To be published in Physical Review Letters | null | 10.1103/PhysRevLett.109.029502 | null | gr-qc hep-ph hep-th physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reply to P. Forg\'acs, T. Herpay, and P. Kov\'acs (arXiv: 1202.6289).
| [
{
"created": "Thu, 21 Jun 2012 04:45:08 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Galley",
"Chad R.",
""
],
[
"Leibovich",
"Adam K.",
""
],
[
"Rothstein",
"Ira Z.",
""
]
] | We reply to P. Forg\'acs, T. Herpay, and P. Kov\'acs (arXiv: 1202.6289). |
2308.13901 | Himanshu Chaudhary | Dhruv Arora, Niyaz Uddin Molla, Himanshu Chaudhary, Ujjal Debnath,
Farruh Atamurotov, G.Mustafa | Exploring Tidal Force Effects and Shadow Constraints for
Schwarzschild-like Black Hole in Starobinsky-Bel-Robinson Gravity | 12 pages, 18 figures, accepted for publication in European Physical
Journal C | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The current manuscript deals with the tidal force effects, geodesic
deviation, and shadow constraints of the Schwarzschild-like black hole
theorised in Starobinsky-Bel-Robinson gravity exhibiting M-theory
compactification. In the current analysis, we explore the radial and angular
tidal force effects on a radially in... | [
{
"created": "Sat, 26 Aug 2023 15:03:35 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Oct 2023 10:49:34 GMT",
"version": "v2"
}
] | 2023-10-25 | [
[
"Arora",
"Dhruv",
""
],
[
"Molla",
"Niyaz Uddin",
""
],
[
"Chaudhary",
"Himanshu",
""
],
[
"Debnath",
"Ujjal",
""
],
[
"Atamurotov",
"Farruh",
""
],
[
"Mustafa",
"G.",
""
]
] | The current manuscript deals with the tidal force effects, geodesic deviation, and shadow constraints of the Schwarzschild-like black hole theorised in Starobinsky-Bel-Robinson gravity exhibiting M-theory compactification. In the current analysis, we explore the radial and angular tidal force effects on a radially in-f... |
2110.13316 | Josiel Mendon\c{c}a | Josiel Mendon\c{c}a Soares de Souza, Riccardo Sturani and Jailson
Alcaniz | Cosmography with Standard Sirens from the Einstein Telescope | null | null | 10.1088/1475-7516/2022/03/025 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the power of third-generation gravitational wave detectors to
constrain cosmographic parameters in the case of electromagnetically bright
standard sirens focusing on the specific case of the Einstein Telescope. We
analyze the impact that the redshift source distribution, the number of
detections and the ob... | [
{
"created": "Mon, 25 Oct 2021 23:22:43 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Mar 2022 16:49:44 GMT",
"version": "v2"
}
] | 2022-03-15 | [
[
"de Souza",
"Josiel Mendonça Soares",
""
],
[
"Sturani",
"Riccardo",
""
],
[
"Alcaniz",
"Jailson",
""
]
] | We discuss the power of third-generation gravitational wave detectors to constrain cosmographic parameters in the case of electromagnetically bright standard sirens focusing on the specific case of the Einstein Telescope. We analyze the impact that the redshift source distribution, the number of detections and the obse... |
gr-qc/9904027 | Eleonora Alfinito | E Alfinito, R Manka and G Vitiello | Vacuum structure for expanding geometry | Latex file, epsfig, 1 figure, 21 pages | Class.Quant.Grav. 17 (2000) 93-111 | 10.1088/0264-9381/17/1/307 | null | gr-qc hep-th math-ph math.MP | null | We consider gravitational wave modes in the FRW metrics in a de Sitter phase
and show that the state space splits into many unitarily inequivalent
representations of the canonical commutation relations. Non-unitary time
evolution is described as a trajectory in the space of the representations. The
generator of time ... | [
{
"created": "Mon, 12 Apr 1999 13:56:02 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Alfinito",
"E",
""
],
[
"Manka",
"R",
""
],
[
"Vitiello",
"G",
""
]
] | We consider gravitational wave modes in the FRW metrics in a de Sitter phase and show that the state space splits into many unitarily inequivalent representations of the canonical commutation relations. Non-unitary time evolution is described as a trajectory in the space of the representations. The generator of time ev... |
1408.5482 | Andrea Geralico | Donato Bini, Pierluigi Fortini, Andrea Geralico, Maria Haney,
Antonello Ortolan | Light scattering by radiation fields: the optical medium analogy | 6 pages, 4 figures; published version | EPL 102, 20006 (2013) | 10.1209/0295-5075/102/20006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The optical medium analogy of a radiation field generated by either an exact
gravitational plane wave or an exact electromagnetic wave in the framework of
general relativity is developed. The equivalent medium of the associated
background field is inhomogeneous and anisotropic in the former case, whereas
it is inhomo... | [
{
"created": "Sat, 23 Aug 2014 10:24:30 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Bini",
"Donato",
""
],
[
"Fortini",
"Pierluigi",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Haney",
"Maria",
""
],
[
"Ortolan",
"Antonello",
""
]
] | The optical medium analogy of a radiation field generated by either an exact gravitational plane wave or an exact electromagnetic wave in the framework of general relativity is developed. The equivalent medium of the associated background field is inhomogeneous and anisotropic in the former case, whereas it is inhomoge... |
gr-qc/9703067 | Lior M. Burko | Lior M. Burko, Amos Ori | Late-time evolution of nonlinear gravitational collapse | 14 pages, standard LaTeX, 18 Encapsulated PostScript figures. A new
convergence test and a determination of QN ringing were added, in addition to
correction of typos and update of references | Phys.Rev.D56:7820-7832,1997 | 10.1103/PhysRevD.56.7820 | null | gr-qc | null | We study numerically the fully nonlinear gravitational collapse of a
self-gravitating, minimally-coupled, massless scalar field in spherical
symmetry. Our numerical code is based on double-null coordinates and on free
evolution of the metric functions: The evolution equations are integrated
numerically, whereas the c... | [
{
"created": "Mon, 24 Mar 1997 17:33:26 GMT",
"version": "v1"
},
{
"created": "Sun, 21 Sep 1997 06:02:48 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"Burko",
"Lior M.",
""
],
[
"Ori",
"Amos",
""
]
] | We study numerically the fully nonlinear gravitational collapse of a self-gravitating, minimally-coupled, massless scalar field in spherical symmetry. Our numerical code is based on double-null coordinates and on free evolution of the metric functions: The evolution equations are integrated numerically, whereas the con... |
1410.1523 | Luca Visinelli | Luca Visinelli | Neutrino flavor oscillations in a curved space-time | 15 pages, two figures | Gen.Rel.Grav. 47 (2015) 62 | 10.1007/s10714-015-1899-z 10.1007/s10714-015-1899-z | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a WKB approximation of the Dirac equation in a curved spacetime, we
obtain the expression for the phase shift between two neutrino mass eigenstates
in a generic gravitational field. We apply this expression to two specific
space-time geometries, namely the Kerr-Newman metric describing a rotating and
charged bl... | [
{
"created": "Sun, 5 Oct 2014 18:21:48 GMT",
"version": "v1"
},
{
"created": "Wed, 6 May 2015 06:18:39 GMT",
"version": "v2"
}
] | 2019-05-30 | [
[
"Visinelli",
"Luca",
""
]
] | Using a WKB approximation of the Dirac equation in a curved spacetime, we obtain the expression for the phase shift between two neutrino mass eigenstates in a generic gravitational field. We apply this expression to two specific space-time geometries, namely the Kerr-Newman metric describing a rotating and charged blac... |
1710.01059 | Christian Boehmer | Christian G. Boehmer, Peter A. Hogan | A Vaidya-type generalisation of Kerr space-time | 9 pages | Mod. Phys. Lett. A, Vol. 32, No. 35 (2017) 1750189 | 10.1142/S0217732317501899 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new Vaidya-type generalisation of Kerr space-time is constructed by
requiring the Kerr mass and angular momentum per unit mass to depend upon a
variable which has a simple geometrical origin. The matter distribution
introduced in this way radiates mass and angular momentum at future null
infinity. The Vaidya genera... | [
{
"created": "Tue, 3 Oct 2017 10:15:49 GMT",
"version": "v1"
}
] | 2017-10-31 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Hogan",
"Peter A.",
""
]
] | A new Vaidya-type generalisation of Kerr space-time is constructed by requiring the Kerr mass and angular momentum per unit mass to depend upon a variable which has a simple geometrical origin. The matter distribution introduced in this way radiates mass and angular momentum at future null infinity. The Vaidya generali... |
gr-qc/0611057 | Ishai Ben-Dov | Ishai Ben-Dov | Outer Trapped Surfaces in Vaidya Spacetimes | 33 pages, 4 figures, minor corrections for publication | Phys.Rev.D75:064007,2007 | 10.1103/PhysRevD.75.064007 | null | gr-qc | null | It is proven that in Vaidya spacetimes of bounded total mass, the outer
boundary, in spacetime, of the region containing outer trapped surfaces, is the
event horizon. Further, it is shown that the region containing trapped surfaces
in these spacetimes does not always extend to the event horizon.
| [
{
"created": "Fri, 10 Nov 2006 00:34:06 GMT",
"version": "v1"
},
{
"created": "Sat, 17 Mar 2007 16:41:36 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Ben-Dov",
"Ishai",
""
]
] | It is proven that in Vaidya spacetimes of bounded total mass, the outer boundary, in spacetime, of the region containing outer trapped surfaces, is the event horizon. Further, it is shown that the region containing trapped surfaces in these spacetimes does not always extend to the event horizon. |
gr-qc/9810014 | Diego Pavon | Angelo M. Anile, Diego Pavon, Vittorio Romano | The Case for Hyperbolic Theories of Dissipation in Relativistic Fluids | 11 pages, revtex, two columns format, 1 table, 2 postscript figures
added, typos corrected | null | null | null | gr-qc astro-ph | null | In this paper we highlight the fact that the physical content of hyperbolic
theories of relativistic dissipative fluids is, in general, much broader than
that of the parabolic ones. This is substantiated by presenting an ample range
of dissipative fluids whose behavior noticeably departs from Navier-Stokes'.
| [
{
"created": "Mon, 5 Oct 1998 09:08:00 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Dec 1998 15:04:34 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Anile",
"Angelo M.",
""
],
[
"Pavon",
"Diego",
""
],
[
"Romano",
"Vittorio",
""
]
] | In this paper we highlight the fact that the physical content of hyperbolic theories of relativistic dissipative fluids is, in general, much broader than that of the parabolic ones. This is substantiated by presenting an ample range of dissipative fluids whose behavior noticeably departs from Navier-Stokes'. |
gr-qc/0403002 | Valeri Frolov | Valeri P. Frolov, Dmitri V. Fursaev, Dejan Stojkovic | Rotating black holes in brane worlds | Version published in JHEP | JHEP 0406 (2004) 057 | 10.1088/1126-6708/2004/06/057 | Alberta-Thy-03-04 | gr-qc | null | We study interaction of rotating higher dimensional black holes with a brane
in space-times with large extra dimensions. We demonstrate that a rotating
black hole attached to a brane can be stationary only if the null Killing
vector generating the black hole horizon is tangent to the brane world-sheet.
The characteri... | [
{
"created": "Fri, 27 Feb 2004 23:09:21 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Mar 2004 22:50:38 GMT",
"version": "v2"
},
{
"created": "Tue, 25 May 2004 13:57:49 GMT",
"version": "v3"
},
{
"created": "Mon, 26 Jul 2004 17:55:05 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Frolov",
"Valeri P.",
""
],
[
"Fursaev",
"Dmitri V.",
""
],
[
"Stojkovic",
"Dejan",
""
]
] | We study interaction of rotating higher dimensional black holes with a brane in space-times with large extra dimensions. We demonstrate that a rotating black hole attached to a brane can be stationary only if the null Killing vector generating the black hole horizon is tangent to the brane world-sheet. The characterist... |
1809.10969 | Nikolaos Dimakis | N. Dimakis, Petros A. Terzis and T. Christodoulakis | Integrability of the mixmaster model | Latex2e source file,8 pages, no figures, minor changes to match the
PRD published version | Phys. Rev. D 99, 023536 (2019) | 10.1103/PhysRevD.99.023536 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The mixmaster model has always been a field of controversy in the literature
regarding its (non)integrability. In this work, we make use of a generalized
definition of a class of nonlocal conserved charges in phase space to
demonstrate that the anisotropic Bianchi type IX model in vacuum is -at least
locally - Liouvi... | [
{
"created": "Fri, 28 Sep 2018 11:36:14 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Jan 2019 02:13:16 GMT",
"version": "v2"
},
{
"created": "Sat, 26 Jan 2019 04:24:28 GMT",
"version": "v3"
}
] | 2019-02-06 | [
[
"Dimakis",
"N.",
""
],
[
"Terzis",
"Petros A.",
""
],
[
"Christodoulakis",
"T.",
""
]
] | The mixmaster model has always been a field of controversy in the literature regarding its (non)integrability. In this work, we make use of a generalized definition of a class of nonlocal conserved charges in phase space to demonstrate that the anisotropic Bianchi type IX model in vacuum is -at least locally - Liouvill... |
gr-qc/9510042 | Dario Nunez | Tonatiuh Matos, Dar\'io N\'u\~nez, and Hernando Quevedo | Class of Einstein--Maxwell Dilatons | Published in Physical Review D, R310 (1995) | Phys.Rev.D51:310-313,1995 | 10.1103/PhysRevD.51.R310 | null | gr-qc | null | Three different classes of static solutions of the Einstein--Maxwell
equations non--minimally coupled to a dilaton field are presented. The
solutions are given in general in terms of two arbitrary harmonic functions and
involve among others an arbitrary parameter which determines their
applicability as charged black ... | [
{
"created": "Fri, 20 Oct 1995 00:56:29 GMT",
"version": "v1"
}
] | 2016-08-15 | [
[
"Matos",
"Tonatiuh",
""
],
[
"Núñez",
"Darío",
""
],
[
"Quevedo",
"Hernando",
""
]
] | Three different classes of static solutions of the Einstein--Maxwell equations non--minimally coupled to a dilaton field are presented. The solutions are given in general in terms of two arbitrary harmonic functions and involve among others an arbitrary parameter which determines their applicability as charged black ho... |
1212.4311 | Remo Garattini | Remo Garattini | Self Sustained Traversable Wormholes Induced by Gravity's Rainbow and
Noncommutative Geometry | 5 pages, contribution to the proceedings of The Time Machine Factory,
Turin, Italy, 14-20 October, 2012 | null | 10.1051/epjconf/20135801007 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compare the effects of Noncommutative Geometry and Gravity's Rainbow on
traversable wormholes which are sustained by their own gravitational quantum
fluctuations. Fixing the geometry on a well tested model, we find that the
final result shows that the wormhole is of the Planckian size. This means that
the traversa... | [
{
"created": "Tue, 18 Dec 2012 11:19:09 GMT",
"version": "v1"
}
] | 2017-03-22 | [
[
"Garattini",
"Remo",
""
]
] | We compare the effects of Noncommutative Geometry and Gravity's Rainbow on traversable wormholes which are sustained by their own gravitational quantum fluctuations. Fixing the geometry on a well tested model, we find that the final result shows that the wormhole is of the Planckian size. This means that the traversabi... |
1905.08939 | Takuya Tsuchiya | Takuya Tsuchiya and Makoto Nakamura | On the numerical experiments of the Cauchy problem for semi-linear
Klein-Gordon equations in the de Sitter spacetime | 25 pages, 18 figures | Journal of Computational and Applied Mathematics, Volume 361, 1
December 2019, Pages 396-412 | 10.1016/j.cam.2019.05.005 | null | gr-qc math.NA quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The computational analysis of the Cauchy problem for semi-linear Klein-Gordon
equations in the de Sitter spacetime is considered. Several simulations are
performed to show the time-global behaviors of the solutions of the equations
in the spacetime based on the structure-preserving scheme. It is remarked that
the suf... | [
{
"created": "Wed, 22 May 2019 03:36:58 GMT",
"version": "v1"
}
] | 2019-05-23 | [
[
"Tsuchiya",
"Takuya",
""
],
[
"Nakamura",
"Makoto",
""
]
] | The computational analysis of the Cauchy problem for semi-linear Klein-Gordon equations in the de Sitter spacetime is considered. Several simulations are performed to show the time-global behaviors of the solutions of the equations in the spacetime based on the structure-preserving scheme. It is remarked that the suffi... |
1406.2334 | Diego S\'aez-G\'omez | Alvaro de la Cruz-Dombriz, Peter K. S. Dunsby and Diego Saez-Gomez | Junction conditions in extended Teleparallel gravities | 17 pages, analysis extended, published version in JCAP | JCAP 1412 (2014) 048 | 10.1088/1475-7516/2014/12/048 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of extended Teleparallel gravity theories, we address the
issue of junction conditions required to guarantee the correct matching of
different regions of spacetime. In the absence of shells/branes, these
conditions turn out to be more restrictive than their counterparts in General
Relativity as in othe... | [
{
"created": "Mon, 9 Jun 2014 20:03:06 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Jan 2015 16:29:22 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"de la Cruz-Dombriz",
"Alvaro",
""
],
[
"Dunsby",
"Peter K. S.",
""
],
[
"Saez-Gomez",
"Diego",
""
]
] | In the context of extended Teleparallel gravity theories, we address the issue of junction conditions required to guarantee the correct matching of different regions of spacetime. In the absence of shells/branes, these conditions turn out to be more restrictive than their counterparts in General Relativity as in other ... |
0909.1796 | Alexander Stroeer | Alexander Stroeer, Gijs Nelemans | The influence of short term variations in AM CVn systems on LISA
measurements | 5 pages, 3 figures, accepted for publication in MNRAS Letters | null | 10.1111/j.1745-3933.2009.00754.x | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effect of short term variations of the evolution of AM CVn
systems on their gravitational wave emissions and in particular LISA
observations. We model the systems according to their equilibrium mass-transfer
evolution as driven by gravitational wave emission and tidal interaction, and
determine their rea... | [
{
"created": "Wed, 9 Sep 2009 18:54:53 GMT",
"version": "v1"
}
] | 2015-05-14 | [
[
"Stroeer",
"Alexander",
""
],
[
"Nelemans",
"Gijs",
""
]
] | We study the effect of short term variations of the evolution of AM CVn systems on their gravitational wave emissions and in particular LISA observations. We model the systems according to their equilibrium mass-transfer evolution as driven by gravitational wave emission and tidal interaction, and determine their react... |
1602.05997 | Hector O. Silva | Hector O. Silva, Andrea Maselli, Masato Minamitsuji, Emanuele Berti | Compact objects in Horndeski gravity | Part of a Special Issue of IJMPD on Selected Papers of the III
Amazonian Symposium on Physics (Eds. C. Herdeiro, E. Berti, V. Cardoso, L. C.
Crispino, L. Gualtieri and U. Sperhake). 10 pages, 2 figures. New references
added. Matches published version | null | 10.1142/S0218271816410066 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Horndeski gravity holds a special position as the most general extension of
Einstein's theory of general relativity with a single scalar degree of freedom
and second-order field equations. Because of these features, Horndeski gravity
is an attractive phenomenological playground to investigate the consequences of
modi... | [
{
"created": "Thu, 18 Feb 2016 22:49:29 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jun 2016 12:37:27 GMT",
"version": "v2"
}
] | 2016-06-23 | [
[
"Silva",
"Hector O.",
""
],
[
"Maselli",
"Andrea",
""
],
[
"Minamitsuji",
"Masato",
""
],
[
"Berti",
"Emanuele",
""
]
] | Horndeski gravity holds a special position as the most general extension of Einstein's theory of general relativity with a single scalar degree of freedom and second-order field equations. Because of these features, Horndeski gravity is an attractive phenomenological playground to investigate the consequences of modifi... |
gr-qc/0604127 | Daniel M\"uller | Sandro P. Vitenti and Daniel M\"uller | Numerical Bianchi I solutions in semi-classical gravitation | Accepted for publication in PRD. More references included, a few
modifications in the text | Phys.Rev.D74:063508,2006 | 10.1103/PhysRevD.74.063508 | null | gr-qc | null | It is believed that soon after the Planck era, spacetime should have a
semi-classical nature. In this context we consider quantum fields propagating
in a classical gravitational field and study the backreaction of these fields,
using the expected value of the energy-momentum tensor as source of the
gravitational fiel... | [
{
"created": "Fri, 28 Apr 2006 17:37:40 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Aug 2006 18:30:29 GMT",
"version": "v2"
}
] | 2011-07-19 | [
[
"Vitenti",
"Sandro P.",
""
],
[
"Müller",
"Daniel",
""
]
] | It is believed that soon after the Planck era, spacetime should have a semi-classical nature. In this context we consider quantum fields propagating in a classical gravitational field and study the backreaction of these fields, using the expected value of the energy-momentum tensor as source of the gravitational field.... |
gr-qc/9709029 | Ruth A. W. Gregory | Owen Dando and Ruth Gregory | Global monopoles in dilaton gravity | 15 pages, 3 figures, version to appear in Class Quant Grav | Class.Quant.Grav. 15 (1998) 985-995 | 10.1088/0264-9381/15/4/019 | DTP/97/43 | gr-qc hep-th | null | We analyse the gravitational field of a global monopole within the context of
low energy string gravity, allowing for an arbitrary coupling of the monopole
fields to the dilaton. Both massive and massless dilatons are considered. We
find that, for a massless dilaton, the spacetime is generically singular,
whereas whe... | [
{
"created": "Fri, 12 Sep 1997 13:55:15 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Jan 1998 09:45:03 GMT",
"version": "v2"
},
{
"created": "Wed, 11 Feb 1998 17:00:31 GMT",
"version": "v3"
}
] | 2009-10-30 | [
[
"Dando",
"Owen",
""
],
[
"Gregory",
"Ruth",
""
]
] | We analyse the gravitational field of a global monopole within the context of low energy string gravity, allowing for an arbitrary coupling of the monopole fields to the dilaton. Both massive and massless dilatons are considered. We find that, for a massless dilaton, the spacetime is generically singular, whereas when ... |
1802.03686 | Takahiro Hayashinaka | Takahiro Hayashinaka and She-Sheng Xue | Physical renormalization condition for de Sitter QED | 6 pages, 4 figures | Phys. Rev. D 97, 105010 (2018) | 10.1103/PhysRevD.97.105010 | RESCEU-3/18 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We considered a new renormalization condition for the vacuum expectation
values of the scalar and spinor currents induced by a homogeneous and constant
electric field background in de Sitter spacetime. Following a semiclassical
argument, the condition named maximal subtraction imposes the exponential
suppression on t... | [
{
"created": "Sun, 11 Feb 2018 03:20:07 GMT",
"version": "v1"
}
] | 2018-05-23 | [
[
"Hayashinaka",
"Takahiro",
""
],
[
"Xue",
"She-Sheng",
""
]
] | We considered a new renormalization condition for the vacuum expectation values of the scalar and spinor currents induced by a homogeneous and constant electric field background in de Sitter spacetime. Following a semiclassical argument, the condition named maximal subtraction imposes the exponential suppression on the... |
1810.06627 | Slava G. Turyshev | Slava G. Turyshev, Viktor T. Toth | Diffraction of light by the gravitational field of the Sun and the solar
corona | 54 pages, 3 figures. arXiv admin note: substantial text overlap with
arXiv:1805.00398 | Phys. Rev. D 99, 024044 (2019) | 10.1103/PhysRevD.99.024044 | null | gr-qc astro-ph.SR physics.plasm-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the optical properties of the solar gravitational lens (SGL) under
the combined influence of the static spherically symmetric gravitational field
of the Sun---modeled within the first post-Newtonian approximation of the
general theory of relativity---and of the solar corona---modeled as a generic,
steady-sta... | [
{
"created": "Mon, 15 Oct 2018 19:30:40 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Jan 2019 16:21:58 GMT",
"version": "v2"
}
] | 2019-02-01 | [
[
"Turyshev",
"Slava G.",
""
],
[
"Toth",
"Viktor T.",
""
]
] | We study the optical properties of the solar gravitational lens (SGL) under the combined influence of the static spherically symmetric gravitational field of the Sun---modeled within the first post-Newtonian approximation of the general theory of relativity---and of the solar corona---modeled as a generic, steady-state... |
0801.4157 | Lukasz Andrzej Glinka | L.A. Glinka | Multiparticle Quantum Cosmology | Notation was simplified, and gramatical errors was corrected. 6 pages
in AIP latex format, submitted to Proceedings volume of Ninth International
Symposium Frontiers of Fundamental and Computational Physics, Udine
University, Udine, Italy and The International Center for Theoretical
Physics, Trieste, Italy, Jan... | AIP Conf.Proc.1018:94-99,2008 | 10.1063/1.2947716 | null | gr-qc | null | Fock space quantization of Hamiltonian constraints of General Relativity and
thermodynamics of quantum states for flat Friedmann-Lemaitre-Robertson-Walker
metrics is presented.
| [
{
"created": "Sun, 27 Jan 2008 21:38:00 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Feb 2008 00:41:19 GMT",
"version": "v2"
},
{
"created": "Tue, 5 Feb 2008 06:53:24 GMT",
"version": "v3"
},
{
"created": "Fri, 8 Feb 2008 09:09:14 GMT",
"version": "v4"
},
{
"crea... | 2011-04-11 | [
[
"Glinka",
"L. A.",
""
]
] | Fock space quantization of Hamiltonian constraints of General Relativity and thermodynamics of quantum states for flat Friedmann-Lemaitre-Robertson-Walker metrics is presented. |
gr-qc/9907087 | Sergey Zuev | Sergey V. Zuev (Penza State Pedagogical University) | Description of Charged Scalar System by means of General Relativit y
Approach | 4 pages, LaTeX | null | null | null | gr-qc | null | The K\"ahler metric which has been constructed by present author is used in
this paper to find an exact solution of Einstein equations with energy-momentum
tensor of special type. The type of $T_{ij}$ admits in particular to use it as
energy-momentum tensor of charged scalar field and in case of such system the
field... | [
{
"created": "Tue, 27 Jul 1999 12:23:10 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Zuev",
"Sergey V.",
"",
"Penza State Pedagogical University"
]
] | The K\"ahler metric which has been constructed by present author is used in this paper to find an exact solution of Einstein equations with energy-momentum tensor of special type. The type of $T_{ij}$ admits in particular to use it as energy-momentum tensor of charged scalar field and in case of such system the field f... |
1106.1417 | Jorge Pullin | Rodolfo Gambini, Saeed Rastgoo, Jorge Pullin | Small Lorentz violations in quantum gravity: do they lead to
unacceptably large effects? | 9 pages, 1 figure, Revtex, to appear in Class. Quan. Grav | Class. Quantum Grav. 28 155005 (2011) | 10.1088/0264-9381/28/15/155005 | LSU-REL-0222111 | gr-qc hep-lat hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the applicability of the argument of Collins, P\'erez, Sudarsky,
Urrutia and Vucetich to loop quantum gravity. This argument suggests that
Lorentz violations, even ones that only manifest themselves at energies close
to the Planck scale, have significant observational consequences at low
energies when one ... | [
{
"created": "Tue, 7 Jun 2011 19:17:39 GMT",
"version": "v1"
}
] | 2012-02-13 | [
[
"Gambini",
"Rodolfo",
""
],
[
"Rastgoo",
"Saeed",
""
],
[
"Pullin",
"Jorge",
""
]
] | We discuss the applicability of the argument of Collins, P\'erez, Sudarsky, Urrutia and Vucetich to loop quantum gravity. This argument suggests that Lorentz violations, even ones that only manifest themselves at energies close to the Planck scale, have significant observational consequences at low energies when one co... |
1404.1936 | Ivica Smoli\'c | Ivica Smoli\'c | On the various aspects of electromagnetic potentials in spacetimes with
symmetries | 20 pages; revised, published version | Class. Quantum Grav. 31 (2014) 235002 | 10.1088/0264-9381/31/23/235002 | ZTF-EP-14-10 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revise and generalize the properties of the electric and the magnetic
scalar potentials in spacetimes admitting a Killing vector field: Their
constancy on the Killing horizons, uniqueness of solution for the
electromagnetic test fields and the relation between the Bianchi identity and
Maxwell's equations. In each ... | [
{
"created": "Mon, 7 Apr 2014 20:10:08 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Nov 2014 21:00:11 GMT",
"version": "v2"
}
] | 2014-11-19 | [
[
"Smolić",
"Ivica",
""
]
] | We revise and generalize the properties of the electric and the magnetic scalar potentials in spacetimes admitting a Killing vector field: Their constancy on the Killing horizons, uniqueness of solution for the electromagnetic test fields and the relation between the Bianchi identity and Maxwell's equations. In each of... |
gr-qc/9302024 | null | Abhay Ashtekar | Mathematical Problems of Non-perturbative Quantum General Relativity | (Lectures delivered at the 1992 Les Houches summer school on
Gravitation and Quantization), 87 pp, Plain TeX, SU-GP-92/11-1 | null | null | null | gr-qc hep-th | null | The purpose of these lectures is to discuss in some detail a new,
non-perturbative approach to quantum gravity. I would like to present the basic
ideas, outline the key results that have been obtained so far and indicate
where we are headed and what the hopes are. The audience at this summer school
had a diverse back... | [
{
"created": "Fri, 19 Feb 1993 15:46:00 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ashtekar",
"Abhay",
""
]
] | The purpose of these lectures is to discuss in some detail a new, non-perturbative approach to quantum gravity. I would like to present the basic ideas, outline the key results that have been obtained so far and indicate where we are headed and what the hopes are. The audience at this summer school had a diverse backgr... |
gr-qc/0502105 | Jakob Lamey | J. Lamey and G.M. Obermair | Quantum physical relevance of the Einstein tensor | to appear in Brazilian Journal of Physics | Braz.J.Phys. 35 (2005) 439-441 | 10.1590/S0103-97332005000300012 | null | gr-qc quant-ph | null | Taking quantum physics as well as large scale astronomical observations into
account, a spacetime metric is introduced, such that the nonlinear part of the
Einstein tensor contains effects of the order of Planck's constant.
| [
{
"created": "Thu, 24 Feb 2005 18:38:11 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Lamey",
"J.",
""
],
[
"Obermair",
"G. M.",
""
]
] | Taking quantum physics as well as large scale astronomical observations into account, a spacetime metric is introduced, such that the nonlinear part of the Einstein tensor contains effects of the order of Planck's constant. |
gr-qc/0306065 | Yasuo Ezawa | Y.Ezawa, H.Iwasaki, M.Ohmori, S.Ueda, N.Yamada, T.Yano | Cosmology in a Higher-Curvature Gravity | 9 pages, 6 figures | Class.Quant.Grav. 20 (2003) 4933-4942 | 10.1088/0264-9381/20/22/016 | null | gr-qc | null | We investigated the cosmology in a higher-curvature gravity where the
dimensionality of spacetime gives rise to only quantitative difference,
contrary to Einstein gravity. We found exponential type solutions for flat
isotropic and homogeneous vacuum universe for the case in which the
higher-curvature term in the Lagr... | [
{
"created": "Mon, 16 Jun 2003 11:37:12 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Oct 2003 13:14:08 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Ezawa",
"Y.",
""
],
[
"Iwasaki",
"H.",
""
],
[
"Ohmori",
"M.",
""
],
[
"Ueda",
"S.",
""
],
[
"Yamada",
"N.",
""
],
[
"Yano",
"T.",
""
]
] | We investigated the cosmology in a higher-curvature gravity where the dimensionality of spacetime gives rise to only quantitative difference, contrary to Einstein gravity. We found exponential type solutions for flat isotropic and homogeneous vacuum universe for the case in which the higher-curvature term in the Lagran... |
2103.08919 | Marica Minucci | Marica Minucci, Juan Antonio Valiente Kroon | A conformal approach to the stability of Einstein spaces with spatial
sections of negative scalar curvature | Updated to agree with the peer-reviewed article published in
Classical and Quantum Gravity | Class. Quantum Grav. 38 145026 (2021) | 10.1088/1361-6382/ac0356 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, it is shown how the extended conformal Einstein field
equations and a gauge based on the properties of conformal geodesics can be
used to analyse the non-linear stability of de Sitter-like spacetimes with
spatial sections of negative scalar curvature. This class of spacetimes admits
a smooth conforma... | [
{
"created": "Tue, 16 Mar 2021 08:55:53 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Aug 2024 16:02:07 GMT",
"version": "v2"
}
] | 2024-08-09 | [
[
"Minucci",
"Marica",
""
],
[
"Kroon",
"Juan Antonio Valiente",
""
]
] | In this article, it is shown how the extended conformal Einstein field equations and a gauge based on the properties of conformal geodesics can be used to analyse the non-linear stability of de Sitter-like spacetimes with spatial sections of negative scalar curvature. This class of spacetimes admits a smooth conformal ... |
1602.04892 | Efra\'in Rojas Marcial | Norma Bagatella-Flores, Cuauhtemoc Campuzano, Miguel Cruz and Efrain
Rojas | Covariant approach of perturbations in Lovelock type brane gravity | 13 pages, 3 figures. Revised version. References updated. Published
in Class. Quantum Grav | Class. Quantum Grav. 33 (2016) 245012 | 10.1088/0264-9381/33/24/245012 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a covariant scheme to describe the dynamics of small perturbations
on Lovelock type extended objects propagating in a flat Minkowski spacetime.
The higher-dimensional analogue of the Jacobi equation in this theory becomes a
wave type equation for a scalar field $\Phi$. Whithin this framework, we
analyse th... | [
{
"created": "Tue, 16 Feb 2016 03:00:36 GMT",
"version": "v1"
},
{
"created": "Sat, 26 Nov 2016 03:37:16 GMT",
"version": "v2"
}
] | 2016-11-29 | [
[
"Bagatella-Flores",
"Norma",
""
],
[
"Campuzano",
"Cuauhtemoc",
""
],
[
"Cruz",
"Miguel",
""
],
[
"Rojas",
"Efrain",
""
]
] | We develop a covariant scheme to describe the dynamics of small perturbations on Lovelock type extended objects propagating in a flat Minkowski spacetime. The higher-dimensional analogue of the Jacobi equation in this theory becomes a wave type equation for a scalar field $\Phi$. Whithin this framework, we analyse the ... |
1104.3741 | Pankaj S. Joshi | Pankaj S. Joshi | Key problems in black hole physics today | Invited article in Bulletin of the Astronomical Society of India,
Chandra Centennial Issue (eds D.J. Saikia and Virginia Trimble); 20 pages, 6
figures | null | null | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review here some of the major open issues and challenges in black hole
physics today, and the current progress on the same. It is pointed out that to
secure a concrete foundation for the basic theory as well as astrophysical
applications for black hole physics, it is essential to gain a suitable insight
into these... | [
{
"created": "Tue, 19 Apr 2011 13:25:55 GMT",
"version": "v1"
}
] | 2011-04-20 | [
[
"Joshi",
"Pankaj S.",
""
]
] | We review here some of the major open issues and challenges in black hole physics today, and the current progress on the same. It is pointed out that to secure a concrete foundation for the basic theory as well as astrophysical applications for black hole physics, it is essential to gain a suitable insight into these q... |
1912.01920 | Quentin Henry | Quentin Henry and Guillaume Faye and Luc Blanchet | Tidal effects in the equations of motion of compact binary systems to
next-to-next-to-leading post-Newtonian order | 21 pages | Phys. Rev. D 101, 064047 (2020) | 10.1103/PhysRevD.101.064047 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As a first step in the computation of the orbital phase evolution of spinless
compact binaries including tidal effects up to the next-to-next-to-leading
(NNL) order, we obtain the equations of motion of those systems and the
associated conserved integrals in harmonic coordinates. The internal structure
and finite siz... | [
{
"created": "Wed, 4 Dec 2019 12:13:47 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Oct 2020 18:40:00 GMT",
"version": "v2"
}
] | 2020-11-02 | [
[
"Henry",
"Quentin",
""
],
[
"Faye",
"Guillaume",
""
],
[
"Blanchet",
"Luc",
""
]
] | As a first step in the computation of the orbital phase evolution of spinless compact binaries including tidal effects up to the next-to-next-to-leading (NNL) order, we obtain the equations of motion of those systems and the associated conserved integrals in harmonic coordinates. The internal structure and finite size ... |
0904.0187 | Sandor Hegyi | Sandor Hegyi | Simple observations concerning black holes and probability | 6 pages Latex, final version. Essay awarded "Honorable Mention" in
the Gravity Research Foundation 2009 Essay Competition | Int.J.Mod.Phys.D18:2269-2273,2009 | 10.1142/S0218271809015916 | null | gr-qc astro-ph.CO cond-mat.stat-mech hep-th physics.pop-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is argued that black holes and the limit distributions of probability
theory share several properties when their entropy and information content are
compared. In particular the no-hair theorem, the entropy maximization and
holographic bound, and the quantization of entropy of black holes have their
respective anal... | [
{
"created": "Wed, 1 Apr 2009 17:03:01 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Apr 2009 09:52:13 GMT",
"version": "v2"
},
{
"created": "Fri, 22 May 2009 17:20:18 GMT",
"version": "v3"
},
{
"created": "Sat, 23 May 2009 18:28:44 GMT",
"version": "v4"
},
{
"cre... | 2010-02-17 | [
[
"Hegyi",
"Sandor",
""
]
] | It is argued that black holes and the limit distributions of probability theory share several properties when their entropy and information content are compared. In particular the no-hair theorem, the entropy maximization and holographic bound, and the quantization of entropy of black holes have their respective analog... |
2305.05501 | Jorge Gigante Valcarcel | Sebastian Bahamonde, Jorge Gigante Valcarcel | Algebraic classification of the gravitational field in Weyl-Cartan
space-times | 22 pages, minor changes, references added. It matches the version
published in PRD Mathematica file as supplemental material available at
https://community.wolfram.com/groups/-/m/t/2996064 | Phys.Rev.D 108 (2023) 4, 044037 | 10.1103/PhysRevD.108.044037 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a complete algebraic classification for the curvature tensor in
Weyl-Cartan geometry, by applying methods of eigenvalues and principal null
directions on its irreducible decomposition under the group of global Lorentz
transformations, thus providing a full invariant characterisation of all the
possible alg... | [
{
"created": "Tue, 9 May 2023 14:51:47 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Aug 2023 10:51:58 GMT",
"version": "v2"
}
] | 2023-08-24 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Valcarcel",
"Jorge Gigante",
""
]
] | We present a complete algebraic classification for the curvature tensor in Weyl-Cartan geometry, by applying methods of eigenvalues and principal null directions on its irreducible decomposition under the group of global Lorentz transformations, thus providing a full invariant characterisation of all the possible algeb... |
gr-qc/0105123 | Andrew DeBenedictis | A. DeBenedictis, D. Aruliah and A. Das | The T-domain and extreme matter phases inside spherically symmetric
black holes | 24 pages, 1 figure. References added, some minor additions when
discussing general solution. Accepted for publication in General Relativity
and Gravitation | Gen.Rel.Grav.34:365-384,2002 | 10.1023/A:1015328519392 | null | gr-qc | null | Black hole interiors (the $T$-domain) are studied here in great detail. Both
the {\em general} and particular $T$-domain solutions are presented including
non-singular ones. Infinitely many local $T$-domain solutions may be modeled
with this scheme. The duality between the $T$ and $R$ domains is presented. It
is demo... | [
{
"created": "Thu, 31 May 2001 22:57:53 GMT",
"version": "v1"
},
{
"created": "Sat, 1 Sep 2001 20:15:21 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"DeBenedictis",
"A.",
""
],
[
"Aruliah",
"D.",
""
],
[
"Das",
"A.",
""
]
] | Black hole interiors (the $T$-domain) are studied here in great detail. Both the {\em general} and particular $T$-domain solutions are presented including non-singular ones. Infinitely many local $T$-domain solutions may be modeled with this scheme. The duality between the $T$ and $R$ domains is presented. It is demons... |
gr-qc/0510012 | Masakatsu Kenmoku | M.Kenmoku, K.Ishimoto, K.K.Nandi and K.Shigemoto | Scalar Field Contribution to Rotating Black Hole Entropy | 26 pages | Phys.Rev. D73 (2006) 064004 | 10.1103/PhysRevD.73.064004 | null | gr-qc | null | Scalar field contribution to entropy is studied in arbitrary D dimensional
one parameter rotating spacetime by semiclassical method. By introducing the
zenithal angle dependent cutoff parameter, the generalized area law is derived.
The non-rotating limit can be taken smoothly and it yields known results. The
derived ... | [
{
"created": "Tue, 4 Oct 2005 10:27:27 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Oct 2005 08:32:03 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Kenmoku",
"M.",
""
],
[
"Ishimoto",
"K.",
""
],
[
"Nandi",
"K. K.",
""
],
[
"Shigemoto",
"K.",
""
]
] | Scalar field contribution to entropy is studied in arbitrary D dimensional one parameter rotating spacetime by semiclassical method. By introducing the zenithal angle dependent cutoff parameter, the generalized area law is derived. The non-rotating limit can be taken smoothly and it yields known results. The derived ar... |
1901.02892 | Christoph Adam | C. Adam, D. Varela | The superpotential method in cosmological inflation | Latex file, 38 pages, 11 figures; v3: some further comments on the
exact slow-roll attractor solutions and on the (complex-continued)
Breitenlohner-Freedman bound added in Section V.B; several references and the
pertinent remarks added | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scalar field cosmological inflation has a first integral relating the Hubble
function and the lagrangian of the scalar field(s), which is known under the
names of "Hamilton-Jacobi approach" or "superpotential equation". Here we
exploit the simplicity of this superpotential equation and use it as an
alternative but eq... | [
{
"created": "Wed, 9 Jan 2019 19:00:02 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Jan 2019 11:50:43 GMT",
"version": "v2"
},
{
"created": "Mon, 8 Jul 2019 16:33:31 GMT",
"version": "v3"
}
] | 2019-07-09 | [
[
"Adam",
"C.",
""
],
[
"Varela",
"D.",
""
]
] | Scalar field cosmological inflation has a first integral relating the Hubble function and the lagrangian of the scalar field(s), which is known under the names of "Hamilton-Jacobi approach" or "superpotential equation". Here we exploit the simplicity of this superpotential equation and use it as an alternative but equi... |
1201.6636 | Marcus Khuri | Neil N. Katz, Marcus A. Khuri | Three Quasi-Local Masses | Mod. Phys. Lett. A, to appear, 8 pages | Mod. Phys. Lett. A, 27 (2012), no. 7, 1250042.1-1250042.9 | 10.1142/S0217732312500423 | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a definition of quasi-local mass based on the Penrose Inequality.
Two further definitions are given by measuring distortions of the exponential
map.
| [
{
"created": "Tue, 31 Jan 2012 17:58:42 GMT",
"version": "v1"
}
] | 2015-06-04 | [
[
"Katz",
"Neil N.",
""
],
[
"Khuri",
"Marcus A.",
""
]
] | We propose a definition of quasi-local mass based on the Penrose Inequality. Two further definitions are given by measuring distortions of the exponential map. |
1411.5253 | Robert Cole | Stanislav Babak, Jonathan R. Gair, Robert H. Cole | Extreme mass ratio inspirals: perspectives for their detection | 39 pages, 4 figures, to appear in proceedings of EOM 2013 "Equations
of Motion in Relativistic Gravity" | null | 10.1007/978-3-319-18335-0_23 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we consider prospects for detecting extreme mass ratio
inspirals (EMRIs) using gravitational wave (GW) observations by a future space
borne interferometric observatory eLISA. We start with a description of EMRI
formation channels. Different formation scenarios lead to variations in the
expected event ... | [
{
"created": "Wed, 19 Nov 2014 15:29:14 GMT",
"version": "v1"
}
] | 2021-04-07 | [
[
"Babak",
"Stanislav",
""
],
[
"Gair",
"Jonathan R.",
""
],
[
"Cole",
"Robert H.",
""
]
] | In this article we consider prospects for detecting extreme mass ratio inspirals (EMRIs) using gravitational wave (GW) observations by a future space borne interferometric observatory eLISA. We start with a description of EMRI formation channels. Different formation scenarios lead to variations in the expected event ra... |
2207.02130 | Ksh Newton Singh | Ksh. Newton Singh, Megandhren Govender, Sudan Hansraj, and Farook
Rahaman | Physical Implications of Pure Lovelock Geometry on Stellar Structure | 11 Pages, 16 Figures, 1 Table | Ann. Phys. (Berlin) 2022, 534, 2100596 | 10.1002/andp.202100596 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We construct an exact anisotropic star model with a linear barotropic
equation of state and with Finch-Skea potential within the framework of pure
Lovelock gravity. A comparison with the corresponding Einstein model in a
suitable limit is easily deduced. Evidently higher curvature effects induced by
the Lovelock cont... | [
{
"created": "Sat, 2 Jul 2022 16:12:36 GMT",
"version": "v1"
}
] | 2022-07-06 | [
[
"Singh",
"Ksh. Newton",
""
],
[
"Govender",
"Megandhren",
""
],
[
"Hansraj",
"Sudan",
""
],
[
"Rahaman",
"Farook",
""
]
] | We construct an exact anisotropic star model with a linear barotropic equation of state and with Finch-Skea potential within the framework of pure Lovelock gravity. A comparison with the corresponding Einstein model in a suitable limit is easily deduced. Evidently higher curvature effects induced by the Lovelock contri... |
gr-qc/0502038 | Jose Manuel Velhinho | J. M. Velhinho | Denseness of Ashtekar-Lewandowski states and a generalized cut-off in
loop quantum gravity | 16 pages. Minor changes, references added | Class.Quant.Grav. 22 (2005) 3061-3072 | 10.1088/0264-9381/22/14/015 | null | gr-qc hep-th math-ph math.MP | null | We show that the set of states of the Ashtekar-Isham-Lewandowski holonomy
algebra defined by elements of the Ashtekar-Lewandowski Hilbert space is dense
in the space of all states. We consider weak convergence properties of a
modified version of the cut-off procedure currently in use in loop quantum
gravity. This ver... | [
{
"created": "Wed, 9 Feb 2005 16:09:26 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Jul 2005 07:32:55 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Velhinho",
"J. M.",
""
]
] | We show that the set of states of the Ashtekar-Isham-Lewandowski holonomy algebra defined by elements of the Ashtekar-Lewandowski Hilbert space is dense in the space of all states. We consider weak convergence properties of a modified version of the cut-off procedure currently in use in loop quantum gravity. This versi... |
1409.5107 | David Delphenich | D. H. Delphenich | On the electromagnetic constitutive laws that are equivalent to
spacetime metrics | 23 pages,significant revisions to section 3 (general theory), which
had minimal effect on the examples. Minor revision to section 5 (effective
metrics) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The raising of both indices in the components of the Minkowski
electromagnetic field strength 2-form to give the components of the
electromagnetic excitation bivector field can be regarded as being equivalent
to an electromagnetic constitutive law, as well as being defined by the
components of the spacetime metric. T... | [
{
"created": "Wed, 17 Sep 2014 19:23:59 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Mar 2017 13:40:18 GMT",
"version": "v2"
}
] | 2017-03-17 | [
[
"Delphenich",
"D. H.",
""
]
] | The raising of both indices in the components of the Minkowski electromagnetic field strength 2-form to give the components of the electromagnetic excitation bivector field can be regarded as being equivalent to an electromagnetic constitutive law, as well as being defined by the components of the spacetime metric. Thi... |
gr-qc/0011111 | Charis Anastopoulos | Charis Anastopoulos | Quantum correlation functions and the classical limit | 30 pages, latex; minor changes, added some explanations and refeences | Phys.Rev. D63 (2001) 125024 | 10.1103/PhysRevD.63.125024 | null | gr-qc quant-ph | null | We study the transition from the full quantum mechanical description of
physical systems to an approximate classical stochastic one. Our main tool is
the identification of the closed-time-path (CTP) generating functional of
Schwinger and Keldysh with the decoherence functional of the consistent
histories approach. Gi... | [
{
"created": "Wed, 29 Nov 2000 22:56:01 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Feb 2001 17:09:45 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Anastopoulos",
"Charis",
""
]
] | We study the transition from the full quantum mechanical description of physical systems to an approximate classical stochastic one. Our main tool is the identification of the closed-time-path (CTP) generating functional of Schwinger and Keldysh with the decoherence functional of the consistent histories approach. Give... |
2306.11694 | Mohammad Beigmohammadi | Mohammad Beigmohammadi and Kayoomars Karami | Generalized second law of thermodynamics in massive gravity | 23 pages, 5 figures | Eur. Phys. J. C 84, 40 (2024) | 10.1140/epjc/s10052-024-12400-w | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Here, we study the generalized second law (GSL) of thermodynamics in the
framework of massive gravity. To do this, we consider a FRW universe filled
only with matter and enclosed by the apparent horizon. In addition, we consider
two models including generalized massive gravity (GMG) as well as dRGT massive
gravity on... | [
{
"created": "Tue, 20 Jun 2023 17:16:13 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Jun 2023 07:02:56 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Feb 2024 16:00:31 GMT",
"version": "v3"
}
] | 2024-03-01 | [
[
"Beigmohammadi",
"Mohammad",
""
],
[
"Karami",
"Kayoomars",
""
]
] | Here, we study the generalized second law (GSL) of thermodynamics in the framework of massive gravity. To do this, we consider a FRW universe filled only with matter and enclosed by the apparent horizon. In addition, we consider two models including generalized massive gravity (GMG) as well as dRGT massive gravity on d... |
1910.07534 | Cristian Martinez | Luis Avil\'es, Hideki Maeda, and Cristian Martinez | Junction conditions in scalar-tensor theories | 51 pages, 4 figures, references added | null | 10.1088/1361-6382/ab728a | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze junction conditions at a null or non-null hypersurface $\Sigma$ in
a large class of scalar-tensor theories in arbitrary $n(\ge 3)$ dimensions.
After showing that the metric and a scalar field must be continuous at $\Sigma$
as the first junction conditions, we derive the second junctions conditions
from the... | [
{
"created": "Wed, 16 Oct 2019 18:00:03 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Oct 2019 18:01:44 GMT",
"version": "v2"
}
] | 2020-04-08 | [
[
"Avilés",
"Luis",
""
],
[
"Maeda",
"Hideki",
""
],
[
"Martinez",
"Cristian",
""
]
] | We analyze junction conditions at a null or non-null hypersurface $\Sigma$ in a large class of scalar-tensor theories in arbitrary $n(\ge 3)$ dimensions. After showing that the metric and a scalar field must be continuous at $\Sigma$ as the first junction conditions, we derive the second junctions conditions from the E... |
1903.12045 | Pisin Chen | Pisin Chen, Hsiao-Heng Yeh, and Dong-han Yeom | Suppression of long-wavelength CMB spectrum from the Hartle-Hawking wave
function in Starobinsky-type inflation model | 19 pages, 8 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The lack of correlations on the large scale cosmic microwave background (CMB)
anisotropy provides a potential window to probe beyond the standard
inflationary scenario. In this paper, we investigate the primordial power
spectrum based on the Hartle-Hawking (HH) no-boundary proposal for a
homogeneous, isotropic, and s... | [
{
"created": "Thu, 28 Mar 2019 15:26:18 GMT",
"version": "v1"
}
] | 2019-03-29 | [
[
"Chen",
"Pisin",
""
],
[
"Yeh",
"Hsiao-Heng",
""
],
[
"Yeom",
"Dong-han",
""
]
] | The lack of correlations on the large scale cosmic microwave background (CMB) anisotropy provides a potential window to probe beyond the standard inflationary scenario. In this paper, we investigate the primordial power spectrum based on the Hartle-Hawking (HH) no-boundary proposal for a homogeneous, isotropic, and spa... |
gr-qc/0609037 | Yongge Ma | Huahai Tan and Yongge Ma | Semi-classical States in Homogeneous Loop Quantum Cosmology | 13 pages, submitted to CQG | Class.Quant.Grav. 23 (2006) 6793-6803 | 10.1088/0264-9381/23/23/012 | null | gr-qc hep-th | null | Semi-classical states in homogeneous loop quantum cosmology (LQC) are
constructed by two different ways. In the first approach, we firstly construct
an exponentiated annihilation operator. Then a kind of semi-classical
(coherent) state is obtained by solving the eigen-equation of that operator.
Moreover, we use these... | [
{
"created": "Mon, 11 Sep 2006 14:16:21 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Tan",
"Huahai",
""
],
[
"Ma",
"Yongge",
""
]
] | Semi-classical states in homogeneous loop quantum cosmology (LQC) are constructed by two different ways. In the first approach, we firstly construct an exponentiated annihilation operator. Then a kind of semi-classical (coherent) state is obtained by solving the eigen-equation of that operator. Moreover, we use these c... |
gr-qc/9808083 | Richard J. Epp | Richard J. Epp | A Statistical Mechanical Interpretation of Black Hole Entropy Based on
an Orthonormal Frame Action | 26 pages, no figures, Latex, submitted to Phys. Rev. D | null | null | WATPHYS TH-97/18 | gr-qc | null | Carlip has shown that the entropy of the three-dimensional black hole has its
origin in the statistical mechanics of microscopic states living at the
horizon. Beginning with a certain orthonormal frame action, and applying
similar methods, I show that an analogous result extends to the (Euclidean)
black hole in any s... | [
{
"created": "Sun, 30 Aug 1998 22:10:36 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Epp",
"Richard J.",
""
]
] | Carlip has shown that the entropy of the three-dimensional black hole has its origin in the statistical mechanics of microscopic states living at the horizon. Beginning with a certain orthonormal frame action, and applying similar methods, I show that an analogous result extends to the (Euclidean) black hole in any spa... |
gr-qc/0201078 | Marc Mars | Marc Mars | New Non-Diagonal Singularity-Free Cosmological Perfect-Fluid Solution | Latex, no figures | Phys.Rev.D51:3989-3991,1995 | 10.1103/PhysRevD.51.R3989 | null | gr-qc | null | We present a new non-diagonal G2 inhomogeneous perfect-fluid solution with
barotropic equation of state p=rho and positive density everywhere. It
satisfies the global hyperbolicity condition and has no curvature singularity
anywhere. This solution is very simple in form and has two arbitrary constants.
| [
{
"created": "Wed, 23 Jan 2002 21:24:09 GMT",
"version": "v1"
}
] | 2010-01-06 | [
[
"Mars",
"Marc",
""
]
] | We present a new non-diagonal G2 inhomogeneous perfect-fluid solution with barotropic equation of state p=rho and positive density everywhere. It satisfies the global hyperbolicity condition and has no curvature singularity anywhere. This solution is very simple in form and has two arbitrary constants. |
1407.5501 | Merced Montesinos | Miguel \'A. Garc\'ia-Ariza, Merced Montesinos, Gerardo F. Torres del
Castillo | Geometric thermodynamics: black holes and the meaning of the scalar
curvature | LaTeX file, no figures | Entropy16:6515,2014 | 10.3390/e16126515 | null | gr-qc hep-th math-ph math.MP physics.chem-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we show that the vanishing of the scalar curvature of
Ruppeiner-like metrics does not characterize the ideal gas. Furthermore, we
claim through an example that flatness is not a sufficient condition to
establish the absence of interactions in the underlying microscopic model of a
thermodynamic system, w... | [
{
"created": "Mon, 21 Jul 2014 14:12:30 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Dec 2014 23:43:37 GMT",
"version": "v2"
}
] | 2014-12-17 | [
[
"García-Ariza",
"Miguel Á.",
""
],
[
"Montesinos",
"Merced",
""
],
[
"del Castillo",
"Gerardo F. Torres",
""
]
] | In this paper we show that the vanishing of the scalar curvature of Ruppeiner-like metrics does not characterize the ideal gas. Furthermore, we claim through an example that flatness is not a sufficient condition to establish the absence of interactions in the underlying microscopic model of a thermodynamic system, whi... |
1510.09128 | Andrea Addazi AndAdd | Andrea Addazi | Chaotization inside Quantum Black Holes | Published version, Electron.J.Theor.Phys. 12 (2015) 34, 0 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show how the horizon geometry and entropy of a Semiclassical Black Hole
can be reconstructed from a system of $N>>1$ horizonless conic singularities
with average opening angle at the horizon $\langle \Theta \rangle=2\pi$. This
conclusion is strongly motivated by a generalized Wheeler-De Witt equation for
quantum b... | [
{
"created": "Fri, 30 Oct 2015 15:37:01 GMT",
"version": "v1"
},
{
"created": "Sun, 7 Feb 2016 16:58:15 GMT",
"version": "v2"
}
] | 2016-02-09 | [
[
"Addazi",
"Andrea",
""
]
] | We show how the horizon geometry and entropy of a Semiclassical Black Hole can be reconstructed from a system of $N>>1$ horizonless conic singularities with average opening angle at the horizon $\langle \Theta \rangle=2\pi$. This conclusion is strongly motivated by a generalized Wheeler-De Witt equation for quantum bla... |
2305.01537 | Liwei Ji | Liwei Ji, Vassilios Mewes, Yosef Zlochower, Lorenzo Ennoggi, Federico
G. Lopez Armengol, Manuela Campanelli, Federico Cipolletta, Zachariah B.
Etienne | Ameliorating the Courant-Friedrichs-Lewy condition in spherical
coordinates: A double FFT filter method for general relativistic MHD in
dynamical spacetimes | 19 pages, 15 figures, revtex4-1 | null | null | null | gr-qc astro-ph.HE physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Numerical simulations of merging compact objects and their remnants form the
theoretical foundation for gravitational wave and multi-messenger astronomy.
While Cartesian-coordinate-based adaptive mesh refinement is commonly used for
simulations, spherical-like coordinates are more suitable for nearly spherical
remnan... | [
{
"created": "Tue, 2 May 2023 15:45:38 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Nov 2023 21:22:39 GMT",
"version": "v2"
}
] | 2023-11-13 | [
[
"Ji",
"Liwei",
""
],
[
"Mewes",
"Vassilios",
""
],
[
"Zlochower",
"Yosef",
""
],
[
"Ennoggi",
"Lorenzo",
""
],
[
"Armengol",
"Federico G. Lopez",
""
],
[
"Campanelli",
"Manuela",
""
],
[
"Cipolletta",
"Federico... | Numerical simulations of merging compact objects and their remnants form the theoretical foundation for gravitational wave and multi-messenger astronomy. While Cartesian-coordinate-based adaptive mesh refinement is commonly used for simulations, spherical-like coordinates are more suitable for nearly spherical remnants... |
gr-qc/0604101 | Vitor Cardoso | Vitor Cardoso, Marco Cavaglia | Stability of naked singularities and algebraically special modes | 6 pages. ReVTeX4. v2: Minor improvements and extended discussion on
boundary conditions. Version to appear in Phys. Rev. D | Phys.Rev. D74 (2006) 024027 | 10.1103/PhysRevD.74.024027 | null | gr-qc astro-ph hep-ph hep-th | null | We show that algebraically special modes lead to the instability of naked
singularity spacetimes with negative mass. Four-dimensional negative-mass
Schwarzschild and Schwarzschild-de Sitter spacetimes are unstable. Stability of
the Schwarzschild-anti-de Sitter spacetime depends on boundary conditions. We
briefly disc... | [
{
"created": "Sat, 22 Apr 2006 00:33:58 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Jul 2006 19:41:05 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Cardoso",
"Vitor",
""
],
[
"Cavaglia",
"Marco",
""
]
] | We show that algebraically special modes lead to the instability of naked singularity spacetimes with negative mass. Four-dimensional negative-mass Schwarzschild and Schwarzschild-de Sitter spacetimes are unstable. Stability of the Schwarzschild-anti-de Sitter spacetime depends on boundary conditions. We briefly discus... |
1107.6019 | Raymond Lal | Bob Coecke, Raymond Lal | Causal categories: relativistically interacting processes | 43 pages, lots of figures | Found. Phys. 43(4), 458-501 (2012) | 10.1007/s10701-012-9646-8 | null | gr-qc math.CT quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A symmetric monoidal category naturally arises as the mathematical structure
that organizes physical systems, processes, and composition thereof, both
sequentially and in parallel. This structure admits a purely graphical
calculus. This paper is concerned with the encoding of a fixed causal structure
within a symmetr... | [
{
"created": "Fri, 29 Jul 2011 16:52:03 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Coecke",
"Bob",
""
],
[
"Lal",
"Raymond",
""
]
] | A symmetric monoidal category naturally arises as the mathematical structure that organizes physical systems, processes, and composition thereof, both sequentially and in parallel. This structure admits a purely graphical calculus. This paper is concerned with the encoding of a fixed causal structure within a symmetric... |
gr-qc/0205103 | Luis F. Urrutia | Luis Urrutia | Quantum gravity corrections to particle interactions | 12 pages, no figures, MPL LaTeX style; Invited talk at the " First
IUCAA Meeting on the Interface of Gravitational and Quantum Realms", Pune,
17-21 December 2001 | Mod.Phys.Lett. A17 (2002) 943-954 | 10.1142/S0217732302007648 | ICN-FAE-2002-21 | gr-qc | null | An heuristic semiclassical procedure that incorporates quantum gravity
induced corrections in the description of photons and spin 1/2 fermions is
reviewed. Such modifications are calculated in the framework of loop quantum
gravity and they arise from the granular structure of space at short distances.
The resulting e... | [
{
"created": "Fri, 24 May 2002 00:41:18 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Urrutia",
"Luis",
""
]
] | An heuristic semiclassical procedure that incorporates quantum gravity induced corrections in the description of photons and spin 1/2 fermions is reviewed. Such modifications are calculated in the framework of loop quantum gravity and they arise from the granular structure of space at short distances. The resulting eff... |
2408.04365 | Muhammad Shahzad | M. Umair Shahzad, Nazek Alessa, Abdul Wahab and Rafda Rafique | Optical Properties and Thermal Geometries of Hot
NUT-Kerr-Newman-Kasuya-AdS Spacetime | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | This paper is devoted to studying the optical and thermal geometrical
properties of Hot, NUT-KerrNewman-Kasuya-AdS black hole (BH). This BH is
characterized by the NUT charge and a parameter Q that comprises the electric
and magnetic charge. We compute the image of the BH shadow in two types: 1) at
infinity, 2) at sp... | [
{
"created": "Thu, 8 Aug 2024 10:51:50 GMT",
"version": "v1"
}
] | 2024-08-09 | [
[
"Shahzad",
"M. Umair",
""
],
[
"Alessa",
"Nazek",
""
],
[
"Wahab",
"Abdul",
""
],
[
"Rafique",
"Rafda",
""
]
] | This paper is devoted to studying the optical and thermal geometrical properties of Hot, NUT-KerrNewman-Kasuya-AdS black hole (BH). This BH is characterized by the NUT charge and a parameter Q that comprises the electric and magnetic charge. We compute the image of the BH shadow in two types: 1) at infinity, 2) at spec... |
1904.00339 | Yannis K. Semertzidis | Yuri F. Orlov, Eanna Flanagan, and Yannis K. Semertzidis | Spin Rotation by Earth's Gravitational Field in a "Frozen-Spin" Ring | 25 pages, 1 figure | Physics Letters A 376 (2012) 2822-2829 | 10.1016/j.physleta.2012.08.011 | null | gr-qc hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Detailed calculations of spin rotation by the Earth's gravitational field in
a frozen-spin ring are presented in three different coordinate systems and used
(a) to show that the systematic error caused by gravitation in a proposed
electric dipole moment measurement can be unambiguously determined, and (b) to
propose ... | [
{
"created": "Sun, 31 Mar 2019 04:28:58 GMT",
"version": "v1"
}
] | 2019-04-02 | [
[
"Orlov",
"Yuri F.",
""
],
[
"Flanagan",
"Eanna",
""
],
[
"Semertzidis",
"Yannis K.",
""
]
] | Detailed calculations of spin rotation by the Earth's gravitational field in a frozen-spin ring are presented in three different coordinate systems and used (a) to show that the systematic error caused by gravitation in a proposed electric dipole moment measurement can be unambiguously determined, and (b) to propose me... |
1310.0159 | Prasobh C.B | C.B. Prasobh and V.C. Kuriakose | Scalar filed evolution and area spectrum for Lovelock-AdS black holes | 15 pages, 6 figures, published online in Gen. Relativ. Gravit | null | 10.1007/s10714-013-1595-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the modes of evolution of massless scalar fields in the
asymptotically AdS spacetime surrounding maximally symmetric black holes of
large and intermediate size in the Lovelock model. It is observed that all
modes are purely damped at higher orders. Also, the rate of damping is seen to
be independent of order... | [
{
"created": "Tue, 1 Oct 2013 07:04:58 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Oct 2013 06:19:11 GMT",
"version": "v2"
}
] | 2013-10-07 | [
[
"Prasobh",
"C. B.",
""
],
[
"Kuriakose",
"V. C.",
""
]
] | We study the modes of evolution of massless scalar fields in the asymptotically AdS spacetime surrounding maximally symmetric black holes of large and intermediate size in the Lovelock model. It is observed that all modes are purely damped at higher orders. Also, the rate of damping is seen to be independent of order a... |
1406.2672 | Dawood Kothawala Dr. | Dawood Kothawala | Intrinsic and Extrinsic curvatures in Finsler-esque spaces | 8 pages, 1 figure; Sec IV now includes a more refined expression for
Ricci scalar completely in terms of conformal (3-)geometry, and discusses a
couple of applications; to appear in Gen. Rel. Grav._ | Gen. Rel. Grav. 46:1836 (2014) | 10.1007/s10714-014-1836-6 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider metrics related to each other by functionals of a scalar field
$\varphi(x)$ and it's gradient $\nabla \varphi(x)$, and give transformations of
some key geometric quantities associated with such metrics. Our analysis
provides useful and elegant geometric insights into the roles of {\it
conformal} and {\it ... | [
{
"created": "Tue, 10 Jun 2014 19:25:54 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Nov 2014 14:53:48 GMT",
"version": "v2"
}
] | 2014-11-24 | [
[
"Kothawala",
"Dawood",
""
]
] | We consider metrics related to each other by functionals of a scalar field $\varphi(x)$ and it's gradient $\nabla \varphi(x)$, and give transformations of some key geometric quantities associated with such metrics. Our analysis provides useful and elegant geometric insights into the roles of {\it conformal} and {\it no... |
gr-qc/0703037 | Philip D. Mannheim | Philip D. Mannheim | Schwarzschild limit of conformal gravity in the presence of macroscopic
scalar fields | 32 pages, revtex | Phys.Rev.D75:124006,2007 | 10.1103/PhysRevD.75.124006 | null | gr-qc | null | In their original study of conformal gravity, a candidate alternate
gravitational theory, Mannheim and Kazanas showed that in any empty vacuum
region exterior to a localized static spherically symmetric gravitational
source, the geometry would reduce to the standard attractive gravity
Schwarzschild geometry on solar ... | [
{
"created": "Tue, 6 Mar 2007 13:50:57 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Mannheim",
"Philip D.",
""
]
] | In their original study of conformal gravity, a candidate alternate gravitational theory, Mannheim and Kazanas showed that in any empty vacuum region exterior to a localized static spherically symmetric gravitational source, the geometry would reduce to the standard attractive gravity Schwarzschild geometry on solar sy... |
1212.3781 | Anja Marunovic | Dubravko Horvat and Anja Marunovic | Dark energy-like stars from nonminimally coupled scalar field | 15 pages, 16 figures; a paragraph added in Sec.IV B in v2; matches
published version | Class. Quantum Grav. 30 145006 2013 | 10.1088/0264-9381/30/14/145006 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that even a rather minimal extension of the Einstein - Hilbert action
by a nonminimal coupling of the scalar field to the Ricci curvature scalar
results in configurations that resemble more the dark energy stars then the
ordinary boson stars. Even though many of those configurations are endowed by
negative pr... | [
{
"created": "Sun, 16 Dec 2012 12:01:58 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Aug 2013 14:10:00 GMT",
"version": "v2"
}
] | 2013-09-02 | [
[
"Horvat",
"Dubravko",
""
],
[
"Marunovic",
"Anja",
""
]
] | We show that even a rather minimal extension of the Einstein - Hilbert action by a nonminimal coupling of the scalar field to the Ricci curvature scalar results in configurations that resemble more the dark energy stars then the ordinary boson stars. Even though many of those configurations are endowed by negative prin... |
0712.2050 | Gareth Jones | The LIGO Scientific Collaboration: B. Abbott, et al | Search of S3 LIGO data for gravitational wave signals from spinning
black hole and neutron star binary inspirals | 18 pages, 8 figures | Phys.Rev.D78:042002,2008 | 10.1103/PhysRevD.78.042002 | LIGO-P070102-06-Z | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report on the methods and results of the first dedicated search for
gravitational waves emitted during the inspiral of compact binaries with
spinning component bodies. We analyze 788 hours of data collected during the
third science run (S3) of the LIGO detectors. We searched for binary systems
using a detection te... | [
{
"created": "Wed, 12 Dec 2007 21:38:51 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Jan 2008 12:15:13 GMT",
"version": "v2"
},
{
"created": "Mon, 30 Jun 2008 09:55:38 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"Abbott",
"B.",
""
]
] | We report on the methods and results of the first dedicated search for gravitational waves emitted during the inspiral of compact binaries with spinning component bodies. We analyze 788 hours of data collected during the third science run (S3) of the LIGO detectors. We searched for binary systems using a detection temp... |
0810.1768 | David P. Rideout | David Rideout and Petros Wallden | Spacelike distance from discrete causal order | 32 pages, 16 figures, revtex4; journal version | Class.Quant.Grav.26:155013,2009 | 10.1088/0264-9381/26/15/155013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Any discrete approach to quantum gravity must provide some prescription as to
how to deduce continuum properties from the discrete substructure. In the
causal set approach it is straightforward to deduce timelike distances, but
surprisingly difficult to extract spacelike distances, because of the unique
combination o... | [
{
"created": "Thu, 9 Oct 2008 21:50:39 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Oct 2008 17:51:20 GMT",
"version": "v2"
},
{
"created": "Mon, 13 Jul 2009 05:11:03 GMT",
"version": "v3"
}
] | 2009-07-22 | [
[
"Rideout",
"David",
""
],
[
"Wallden",
"Petros",
""
]
] | Any discrete approach to quantum gravity must provide some prescription as to how to deduce continuum properties from the discrete substructure. In the causal set approach it is straightforward to deduce timelike distances, but surprisingly difficult to extract spacelike distances, because of the unique combination of ... |
2302.11547 | Mehrab Momennia | Mehrab Momennia, Alfredo Herrera-Aguilar, Ulises Nucamendi | Kerr black hole in de Sitter spacetime and observational redshift:
Toward a new method to measure the Hubble constant | 15 pages with 4 captioned figures. Comments are welcome; V2: Minor
changes to match the published version | Phys. Rev. D 107, 104041 (2023) | 10.1103/PhysRevD.107.104041 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | We extract the Hubble law by the frequency-shift considerations of test
particles revolving the Kerr black hole in asymptotically de Sitter spacetime.
To this end, we take into account massive geodesic particles circularly
orbiting the Kerr-de Sitter black holes that emit redshifted photons towards a
distant observer... | [
{
"created": "Wed, 22 Feb 2023 18:39:13 GMT",
"version": "v1"
},
{
"created": "Thu, 25 May 2023 20:13:57 GMT",
"version": "v2"
}
] | 2023-05-29 | [
[
"Momennia",
"Mehrab",
""
],
[
"Herrera-Aguilar",
"Alfredo",
""
],
[
"Nucamendi",
"Ulises",
""
]
] | We extract the Hubble law by the frequency-shift considerations of test particles revolving the Kerr black hole in asymptotically de Sitter spacetime. To this end, we take into account massive geodesic particles circularly orbiting the Kerr-de Sitter black holes that emit redshifted photons towards a distant observer w... |
2407.04918 | Nils A. Nilsson | Quentin G. Bailey, Kellie O'Neal-Ault, Nils A. Nilsson | You shall not pass! -- explicit diffeomorphism violation "no-go" results | 20 pages, 2 tables | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | This paper collects several results in the study of the explicit
symmetry-breaking limit of the effective-field theory (EFT) description of
diffeomorphism and local Lorentz-symmetry breaking, where we generalize a
subset of the EFT framework (the "minimal" sector). It is well known that no-go
constraints may arise in... | [
{
"created": "Sat, 6 Jul 2024 01:50:06 GMT",
"version": "v1"
}
] | 2024-07-09 | [
[
"Bailey",
"Quentin G.",
""
],
[
"O'Neal-Ault",
"Kellie",
""
],
[
"Nilsson",
"Nils A.",
""
]
] | This paper collects several results in the study of the explicit symmetry-breaking limit of the effective-field theory (EFT) description of diffeomorphism and local Lorentz-symmetry breaking, where we generalize a subset of the EFT framework (the "minimal" sector). It is well known that no-go constraints may arise in c... |
1009.2877 | Megandhren Govender | G. Govender, M. Govender and K. S. Govinder | Thermal Behaviour of Euclidean Stars | 10 pages, 3 figures | Int.J.Mod.Phys.D19:1773-1782,2010 | 10.1142/S0218271810018049 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A recent study of dissipative collapse considered a contracting sphere in
which the areal and proper radii are equal throughout its evolution. The
interior spacetime was matched to the exterior Vaidya spacetime which generated
a temporal evolution equation at the boundary of the collapsing sphere. We
present a soluti... | [
{
"created": "Wed, 15 Sep 2010 09:27:18 GMT",
"version": "v1"
}
] | 2011-04-07 | [
[
"Govender",
"G.",
""
],
[
"Govender",
"M.",
""
],
[
"Govinder",
"K. S.",
""
]
] | A recent study of dissipative collapse considered a contracting sphere in which the areal and proper radii are equal throughout its evolution. The interior spacetime was matched to the exterior Vaidya spacetime which generated a temporal evolution equation at the boundary of the collapsing sphere. We present a solution... |
2206.06599 | Reggie Pantig | Javlon Rayimbaev, Reggie C. Pantig, Ali \"Ovg\"un, Ahmadjon
Abdujabbarov, Durmu\c{s} Demir | Quasiperiodic oscillations, weak field lensing and shadow cast around
black holes in Symmergent gravity | 21 pages, 20 figures. Comments are welcome | Annals of Physics 169335 (2023) | 10.1016/j.aop.2023.169335 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we perform a systematic study of the symmergent gravity in a
black hole environment. The symmergent gravity, an emergent gravity model in
which gravity emerges in a way restoring the gauge symmetries and stabilizing
the Higgs boson mass, possesses a quadratic-curvature term with a loop-induced
coupling ... | [
{
"created": "Tue, 14 Jun 2022 05:29:31 GMT",
"version": "v1"
}
] | 2023-05-10 | [
[
"Rayimbaev",
"Javlon",
""
],
[
"Pantig",
"Reggie C.",
""
],
[
"Övgün",
"Ali",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
],
[
"Demir",
"Durmuş",
""
]
] | In this work, we perform a systematic study of the symmergent gravity in a black hole environment. The symmergent gravity, an emergent gravity model in which gravity emerges in a way restoring the gauge symmetries and stabilizing the Higgs boson mass, possesses a quadratic-curvature term with a loop-induced coupling pr... |
0709.3139 | Muhammad Sharif | M. Sharif and Zahid Ahmad | Plane Symmetric Gravitational Collapse | 10 pages, accepted for publication in Int. J. Mod. Phys. A | Int.J.Mod.Phys.A23:181-188,2008 | 10.1142/S0217751X0803797X | null | gr-qc | null | In this paper, we derive the general formulation by considering two arbitrary
plane symmetric spacetimes using Israel's method. As an example, we apply this
formulation to known plane symmetric spacetimes. We take the Taub's static
metric in the interior region whereas Kasner's non-static metric in the
exterior regio... | [
{
"created": "Thu, 20 Sep 2007 06:41:16 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Sharif",
"M.",
""
],
[
"Ahmad",
"Zahid",
""
]
] | In this paper, we derive the general formulation by considering two arbitrary plane symmetric spacetimes using Israel's method. As an example, we apply this formulation to known plane symmetric spacetimes. We take the Taub's static metric in the interior region whereas Kasner's non-static metric in the exterior region.... |
1812.00471 | A. Yu. Petrov | J. R. Nascimento, Gonzalo J. Olmo, A. Yu. Petrov, P. J. Porfirio, A.
R. Soares | Global Monopole in Palatini f(R) gravity | 15 pages, version accepted to PRD | Phys. Rev. D 99, 064053 (2019) | 10.1103/PhysRevD.99.064053 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the space-time metric generated by a global monopole in an
extension of General Relativity (GR) of the form
$f(\mathcal{R})=\mathcal{R}-\lambda \mathcal{R}^2$. The theory is formulated in
the metric-affine (or Palatini) formalism and exact analytical solutions are
obtained. For $\lambda<0$, one finds that... | [
{
"created": "Sun, 2 Dec 2018 21:40:57 GMT",
"version": "v1"
},
{
"created": "Sun, 10 Mar 2019 15:31:12 GMT",
"version": "v2"
}
] | 2019-04-03 | [
[
"Nascimento",
"J. R.",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Petrov",
"A. Yu.",
""
],
[
"Porfirio",
"P. J.",
""
],
[
"Soares",
"A. R.",
""
]
] | We consider the space-time metric generated by a global monopole in an extension of General Relativity (GR) of the form $f(\mathcal{R})=\mathcal{R}-\lambda \mathcal{R}^2$. The theory is formulated in the metric-affine (or Palatini) formalism and exact analytical solutions are obtained. For $\lambda<0$, one finds that t... |
gr-qc/9704007 | B. Linet | B. Linet | Static, massive fields and vacuum polarization potential in Rindler
space | 11 pages, latex, no figures | Int.J.Mod.Phys. D7 (1998) 61-72 | 10.1142/S0218271898000061 | null | gr-qc | null | In Rindler space, we determine in terms of special functions the expression
of the static, massive scalar or vector field generated by a point source. We
find also an explicit integral expression of the induced electrostatic
potential resulting from the vacuum polarization due to an electric charge at
rest in the Rin... | [
{
"created": "Thu, 3 Apr 1997 07:25:51 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Linet",
"B.",
""
]
] | In Rindler space, we determine in terms of special functions the expression of the static, massive scalar or vector field generated by a point source. We find also an explicit integral expression of the induced electrostatic potential resulting from the vacuum polarization due to an electric charge at rest in the Rindl... |
2312.16231 | Wen-Xiang Chen | Wen-Xiang Chen and Zi-Yang Huang | Superradiant stability of the Kerr black hole | Published in the International Journal of Modern Physics D, Volume
29, Issue 01, with the article number 2050009 in the year 2020 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We know that Kerr black holes are stable for specific conditions.In this
article, we use algebraic methods to prove the stability of the Kerr black hole
against certain scalar perturbations. This provides new results for the
previously obtained superradiant stability conditions of Kerr black hole. Hod
proved that Ker... | [
{
"created": "Mon, 25 Dec 2023 00:31:46 GMT",
"version": "v1"
}
] | 2023-12-29 | [
[
"Chen",
"Wen-Xiang",
""
],
[
"Huang",
"Zi-Yang",
""
]
] | We know that Kerr black holes are stable for specific conditions.In this article, we use algebraic methods to prove the stability of the Kerr black hole against certain scalar perturbations. This provides new results for the previously obtained superradiant stability conditions of Kerr black hole. Hod proved that Kerr ... |
gr-qc/0411114 | Christopher J. Fewster | C.J. Fewster | Quantum energy inequalities in two dimensions | 4 pages, REVTeX. This is an expanded version of a portion of
gr-qc/0409043. To appear in Phys Rev D | Phys.Rev. D70 (2004) 127501 | 10.1103/PhysRevD.70.127501 | null | gr-qc | null | Quantum energy inequalities (QEIs) were established by Flanagan for the
massless scalar field on two-dimensional Lorentzian spacetimes globally
conformal to Minkowski space. We extend his result to all two-dimensional
globally hyperbolic Lorentzian spacetimes and use it to show that flat
spacetime QEIs give a good ap... | [
{
"created": "Wed, 24 Nov 2004 14:32:00 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Fewster",
"C. J.",
""
]
] | Quantum energy inequalities (QEIs) were established by Flanagan for the massless scalar field on two-dimensional Lorentzian spacetimes globally conformal to Minkowski space. We extend his result to all two-dimensional globally hyperbolic Lorentzian spacetimes and use it to show that flat spacetime QEIs give a good appr... |
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