id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1009.0292 | Carlos O. Lousto | Carlos O. Lousto and Yosef Zlochower | Orbital Evolution of Extreme-Mass-Ratio Black-Hole Binaries with
Numerical Relativity | 4 pages, 4 figures, 3 tables. Matching published version | Phys.Rev.Lett.106:041101,2011 | 10.1103/PhysRevLett.106.041101 | null | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform the first fully nonlinear numerical simulations of black-hole
binaries with mass ratios 100:1. Our technique for evolving such extreme mass
ratios is based on the moving puncture approach with a new gauge condition and
an optimal choice of the mesh refinement (plus large computational resources).
We achiev... | [
{
"created": "Wed, 1 Sep 2010 22:04:59 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Jul 2011 17:00:35 GMT",
"version": "v2"
}
] | 2011-07-04 | [
[
"Lousto",
"Carlos O.",
""
],
[
"Zlochower",
"Yosef",
""
]
] | We perform the first fully nonlinear numerical simulations of black-hole binaries with mass ratios 100:1. Our technique for evolving such extreme mass ratios is based on the moving puncture approach with a new gauge condition and an optimal choice of the mesh refinement (plus large computational resources). We achieve ... |
2206.02610 | Mauro Oi | Davide Brundu, Mariano Cadoni, Mauro Oi, Piero Olla, Andrea
Pierfrancesco Sanna | Atmospheric Newtonian noise modeling for third-generation gravitational
wave detectors | 17 pages, 8 figures | null | 10.1103/PhysRevD.106.064040 | null | gr-qc physics.ao-ph physics.flu-dyn | http://creativecommons.org/licenses/by/4.0/ | The sensitivity and the frequency bandwidth of third-generation
gravitational-wave (GW) detectors are such that the Newtonian noise (NN)
signals produced by atmospheric turbulence could become relevant. We build
models for atmospheric NN that take into account finite correlation times and
inhomogeneity along the vert... | [
{
"created": "Mon, 6 Jun 2022 13:29:20 GMT",
"version": "v1"
}
] | 2022-10-05 | [
[
"Brundu",
"Davide",
""
],
[
"Cadoni",
"Mariano",
""
],
[
"Oi",
"Mauro",
""
],
[
"Olla",
"Piero",
""
],
[
"Sanna",
"Andrea Pierfrancesco",
""
]
] | The sensitivity and the frequency bandwidth of third-generation gravitational-wave (GW) detectors are such that the Newtonian noise (NN) signals produced by atmospheric turbulence could become relevant. We build models for atmospheric NN that take into account finite correlation times and inhomogeneity along the vertic... |
2001.08577 | Thiago R.P. Caram\^es | Thiago R. P. Caram\^es and J. M. Hoff da Silva | Global monopole as a generator of a bulk-brane structure in Brans-Dicke
bulk gravity | 10 pages, 1 figure. Improved version with more discussion added to
the Introduction, section II and conclusion. A new plot was added as well as
new references. Matches version accepted in EPJC | null | 10.1140/epjc/s10052-020-08646-9 | null | gr-qc hep-th | http://creativecommons.org/publicdomain/zero/1.0/ | We investigate a braneworld model generated by a global monopole in the
context of Brans-Dicke gravity. After solving the dynamical equations we found
a model capable to alleviate the so-called hierarchy problem. The obtained
framework is described by a hybrid compactification scheme endowed with a
seven-dimensional ... | [
{
"created": "Thu, 23 Jan 2020 15:05:17 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Nov 2020 14:23:56 GMT",
"version": "v2"
}
] | 2020-11-18 | [
[
"Caramês",
"Thiago R. P.",
""
],
[
"da Silva",
"J. M. Hoff",
""
]
] | We investigate a braneworld model generated by a global monopole in the context of Brans-Dicke gravity. After solving the dynamical equations we found a model capable to alleviate the so-called hierarchy problem. The obtained framework is described by a hybrid compactification scheme endowed with a seven-dimensional sp... |
1708.00507 | S\'ergio Mittmann dos Santos | S. Mittmann dos Santos, J. M. Hoff da Silva and J. L. Cindra | Straight spinning cosmic strings in Brans-Dicke gravity | 13 pages, 1 figure | Mod. Phys. Lett. A 33, 1850051 (2018) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is presented an exact solution of straight spinning cosmic strings in
Brans-Dicke theory of gravitation. The possibility of the existence of closed
timelike curves around these cosmic strings is analyzed. Furthermore, the
stability about the formation of the topological defect discussed here is
checked. It is show... | [
{
"created": "Tue, 1 Aug 2017 20:50:46 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Aug 2017 22:17:39 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Nov 2017 16:58:16 GMT",
"version": "v3"
}
] | 2022-08-30 | [
[
"Santos",
"S. Mittmann dos",
""
],
[
"da Silva",
"J. M. Hoff",
""
],
[
"Cindra",
"J. L.",
""
]
] | It is presented an exact solution of straight spinning cosmic strings in Brans-Dicke theory of gravitation. The possibility of the existence of closed timelike curves around these cosmic strings is analyzed. Furthermore, the stability about the formation of the topological defect discussed here is checked. It is shown ... |
gr-qc/9601029 | Anders Hoglund | S. Brian Edgar, A. H\"oglund | The Lanczos potential for the Weyl curvature tensor: existence, wave
equation and algorithms | 34 pages, plain TeX | null | null | null | gr-qc | null | In the last few years renewed interest in the 3-tensor potential $L_{abc} $
proposed by Lanczos for the Weyl curvature tensor has not only clarified and
corrected Lanczos's original work, but generalised the concept in a number of
ways. In this paper we carefully summarise and extend some aspects of these
results, an... | [
{
"created": "Fri, 19 Jan 1996 13:44:46 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Edgar",
"S. Brian",
""
],
[
"Höglund",
"A.",
""
]
] | In the last few years renewed interest in the 3-tensor potential $L_{abc} $ proposed by Lanczos for the Weyl curvature tensor has not only clarified and corrected Lanczos's original work, but generalised the concept in a number of ways. In this paper we carefully summarise and extend some aspects of these results, and ... |
2004.07487 | Johannes M\"unch | Johannes M\"unch, J\"urgen Struckmeier, David Vasak | Vanishing torsion coupling of the Maxwell field in canonical gauge
theory of gravity | 5 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Maxwell field can be viewed as a $U(1)$-gauge theory, therefore,
generalizing it to form-invariance in dynamical spacetime backgrounds should
take this symmetry into account. This is of essential importance when
generalizations of general relativity to theories with non-vanishing torsion
are considered. Despite t... | [
{
"created": "Thu, 16 Apr 2020 07:10:57 GMT",
"version": "v1"
}
] | 2020-04-17 | [
[
"Münch",
"Johannes",
""
],
[
"Struckmeier",
"Jürgen",
""
],
[
"Vasak",
"David",
""
]
] | The Maxwell field can be viewed as a $U(1)$-gauge theory, therefore, generalizing it to form-invariance in dynamical spacetime backgrounds should take this symmetry into account. This is of essential importance when generalizations of general relativity to theories with non-vanishing torsion are considered. Despite the... |
2210.13750 | Muhammad Zubair | M. Zubair, Muhammad Ali Raza and Ghulam Abbas | Optical Features of Rotating Black Hole with Nonlinear Electrodynamics | 18 pages, 7 figures, Accepted for Publication in European Physical
Journal C | null | 10.1140/epjc/s10052-022-10925-6 | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | In this article, we considered the strong field approximation of nonlinear
electrodynamics black hole and constructed its rotating counterpart by applying
the modified Newman-Janis algorithm. The corresponding metric function in the
strong field limit of the static black hole is identified in order to study the
radiu... | [
{
"created": "Fri, 21 Oct 2022 13:50:20 GMT",
"version": "v1"
}
] | 2022-11-23 | [
[
"Zubair",
"M.",
""
],
[
"Raza",
"Muhammad Ali",
""
],
[
"Abbas",
"Ghulam",
""
]
] | In this article, we considered the strong field approximation of nonlinear electrodynamics black hole and constructed its rotating counterpart by applying the modified Newman-Janis algorithm. The corresponding metric function in the strong field limit of the static black hole is identified in order to study the radius ... |
gr-qc/0703084 | Spiros Cotsakis | Spiros Cotsakis | Talking About Singularities | 29 pages, latex, rapporteur contribution to the Parallel Session on
Cosmological Singularities, MG11, Berlin 2006 | null | 10.1142/9789812834300_0035 | null | gr-qc | null | We discuss some aspects of recent research as well as more general issues
about motivation, useful methods and open problems in the field of cosmological
singularities. In particular, we review some of the approaches to the general
area and include discussions of the method of asymptotic splittings,
singularity and c... | [
{
"created": "Thu, 15 Mar 2007 12:11:23 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Cotsakis",
"Spiros",
""
]
] | We discuss some aspects of recent research as well as more general issues about motivation, useful methods and open problems in the field of cosmological singularities. In particular, we review some of the approaches to the general area and include discussions of the method of asymptotic splittings, singularity and com... |
1203.5032 | Guido Cognola | Guido Cognola and Sergio Zerbini | One-loop F(R,P,Q) gravity in de Sitter universe | Latex, 10 pages, to appear in J. Phys. A: Math. Theor. (special issue
in honor of Prof. S. Dowker) | null | 10.1088/1751-8113/45/37/374014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the dark energy issue, the one-loop quantization approach for a
class of relativistic higher order theories is discussed in some detail. A
specific F(R,P,Q) gravity model at the one-loop level in a de Sitter universe
is investigated, extending the similar program developed for the case of $F(R)$
gravity.... | [
{
"created": "Thu, 22 Mar 2012 16:25:55 GMT",
"version": "v1"
}
] | 2015-06-04 | [
[
"Cognola",
"Guido",
""
],
[
"Zerbini",
"Sergio",
""
]
] | Motivated by the dark energy issue, the one-loop quantization approach for a class of relativistic higher order theories is discussed in some detail. A specific F(R,P,Q) gravity model at the one-loop level in a de Sitter universe is investigated, extending the similar program developed for the case of $F(R)$ gravity. T... |
1502.03935 | Yuichiro Takushima | Yuichiro Takushima, Ayumu Terukina, Kazuhiro Yamamoto | Third order solutions of the cosmological density perturbations in the
Horndeski's most general scalar-tensor theory with the Vainshtein mechanism | 26 pages, 2 figures | Phys. Rev. D 92, 104033 (2015) | 10.1103/PhysRevD.92.104033 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the third order solutions of the cosmological density perturbations
in the Horndeski's most general scalar-tensor theory under the condition that
the Vainshtein mechanism is at work. In this work, we thoroughly investigate
the independence property of the functions describing the nonlinear
mode-couplings, wh... | [
{
"created": "Fri, 13 Feb 2015 10:36:02 GMT",
"version": "v1"
}
] | 2015-11-25 | [
[
"Takushima",
"Yuichiro",
""
],
[
"Terukina",
"Ayumu",
""
],
[
"Yamamoto",
"Kazuhiro",
""
]
] | We study the third order solutions of the cosmological density perturbations in the Horndeski's most general scalar-tensor theory under the condition that the Vainshtein mechanism is at work. In this work, we thoroughly investigate the independence property of the functions describing the nonlinear mode-couplings, whic... |
2108.11995 | Ulrich Sperhake | Thomas Helfer, Ulrich Sperhake, Robin Croft, Miren Radia, Bo-Xuan Ge,
Eugene A. Lim | Malaise and remedy of binary boson-star initial data | 28 pages, 9 figures, submitted to Classical Quantum Gravity | null | 10.1088/1361-6382/ac53b7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Through numerical simulations of boson-star head-on collisions, we explore
the quality of binary initial data obtained from the superposition of
single-star spacetimes. Our results demonstrate that evolutions starting from a
plain superposition of individual boosted boson-star spacetimes are vulnerable
to significant... | [
{
"created": "Thu, 26 Aug 2021 18:47:46 GMT",
"version": "v1"
}
] | 2022-04-13 | [
[
"Helfer",
"Thomas",
""
],
[
"Sperhake",
"Ulrich",
""
],
[
"Croft",
"Robin",
""
],
[
"Radia",
"Miren",
""
],
[
"Ge",
"Bo-Xuan",
""
],
[
"Lim",
"Eugene A.",
""
]
] | Through numerical simulations of boson-star head-on collisions, we explore the quality of binary initial data obtained from the superposition of single-star spacetimes. Our results demonstrate that evolutions starting from a plain superposition of individual boosted boson-star spacetimes are vulnerable to significant u... |
1106.2852 | Sijie Gao | Sijie Gao, Changchun Zhong | Non-extremal Kerr black holes as particle accelerators | 11 pages, 5 figures. A few minor changes | Phys.Rev.D84:044006,2011 | 10.1103/PhysRevD.84.044006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has been shown that extremal Kerr black holes can be used as particle
accelerators and arbitrarily high energy may be obtained near the event
horizon. We study particle collisions near the event horizon (outer horizon)
and Cauchy horizon (inner horizon) of a non-extremal Kerr black hole. Firstly,
we provide a gene... | [
{
"created": "Wed, 15 Jun 2011 01:10:05 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Aug 2011 14:35:02 GMT",
"version": "v2"
}
] | 2011-08-12 | [
[
"Gao",
"Sijie",
""
],
[
"Zhong",
"Changchun",
""
]
] | It has been shown that extremal Kerr black holes can be used as particle accelerators and arbitrarily high energy may be obtained near the event horizon. We study particle collisions near the event horizon (outer horizon) and Cauchy horizon (inner horizon) of a non-extremal Kerr black hole. Firstly, we provide a genera... |
1602.08878 | Somenath Chakrabarty | Soma Mitra, Sanchari De and Somenath Chakrabarty | Some Theoretical Aspects of Quantum Mechanical Equations in Rindler
Space | 40 pages LATEX file, 3 .eps figures (included) | European Physical Journal PLUS, 132, 114, (2017) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we have investigated some of the theoretical aspects of the
solutions of quantum mechanical equations in Rindler space. We have developed
the formalism for exact analytical solutions for Schr$\ddot{\rm{o}}$dinger
equation and Klein-Gordon equation. Along with the approximate form of
solutions for thes... | [
{
"created": "Mon, 29 Feb 2016 09:31:29 GMT",
"version": "v1"
}
] | 2017-03-28 | [
[
"Mitra",
"Soma",
""
],
[
"De",
"Sanchari",
""
],
[
"Chakrabarty",
"Somenath",
""
]
] | In this article we have investigated some of the theoretical aspects of the solutions of quantum mechanical equations in Rindler space. We have developed the formalism for exact analytical solutions for Schr$\ddot{\rm{o}}$dinger equation and Klein-Gordon equation. Along with the approximate form of solutions for these ... |
1706.06826 | Cl\'audio Gomes | Orfeu Bertolami, Cl\'audio Gomes and Francisco S.N. Lobo | Gravitational waves in theories with a non-minimal curvature-matter
coupling | 9 pages. Version published at Eur. Phys. J. C | Eur. Phys. J. C (2018) 78:303 | 10.1140/epjc/s10052-018-5781-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves in the presence of a non-minimal curvature-matter
coupling are analysed, both in the Newman-Penrose and perturbation theory
formalisms. Considering a cosmological constant as a source, the non-minimally
coupled matter-curvature model reduces to $f(R)$ theories. This is in good
agreement with the m... | [
{
"created": "Wed, 21 Jun 2017 11:15:01 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Jan 2018 23:22:28 GMT",
"version": "v2"
},
{
"created": "Wed, 2 May 2018 16:48:31 GMT",
"version": "v3"
}
] | 2018-05-03 | [
[
"Bertolami",
"Orfeu",
""
],
[
"Gomes",
"Cláudio",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | Gravitational waves in the presence of a non-minimal curvature-matter coupling are analysed, both in the Newman-Penrose and perturbation theory formalisms. Considering a cosmological constant as a source, the non-minimally coupled matter-curvature model reduces to $f(R)$ theories. This is in good agreement with the mos... |
gr-qc/9906018 | G. Dautcourt | G. Dautcourt | Classical back reaction of low-frequency cosmic gravitational radiation | 13 double column pages, no figs, submitted to Phys.Rev.D | Phys.Rev. D60 (1999) 044008 | 10.1103/PhysRevD.60.044008 | null | gr-qc | null | We study in a Brill-Hartle type of approximation the back reaction of a
superposition of linear gravitational waves on the mean gravitational field up
to second order in the wave amplitudes. The background field is taken as an
Einstein-deSitter geometry. In order to follow inflationary scenarios, the
wavelengths are ... | [
{
"created": "Fri, 4 Jun 1999 21:43:45 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Dautcourt",
"G.",
""
]
] | We study in a Brill-Hartle type of approximation the back reaction of a superposition of linear gravitational waves on the mean gravitational field up to second order in the wave amplitudes. The background field is taken as an Einstein-deSitter geometry. In order to follow inflationary scenarios, the wavelengths are al... |
1511.05545 | Manuel Kraemer | David Brizuela, Claus Kiefer, Manuel Kraemer | Quantum-gravitational effects on gauge-invariant scalar and tensor
perturbations during inflation: The de Sitter case | 21 pages, 5 figures, clarifications and references added, version
accepted for publication in Physical Review D | Phys. Rev. D 93, 104035 (2016) | 10.1103/PhysRevD.93.104035 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present detailed calculations for quantum-gravitational corrections to the
power spectra of gauge-invariant scalar and tensor perturbations during
inflation. This is done by performing a semiclassical Born-Oppenheimer type of
approximation to the Wheeler-DeWitt equation, from which we obtain a
Schroedinger equatio... | [
{
"created": "Tue, 17 Nov 2015 20:51:36 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Apr 2016 18:57:34 GMT",
"version": "v2"
}
] | 2016-05-19 | [
[
"Brizuela",
"David",
""
],
[
"Kiefer",
"Claus",
""
],
[
"Kraemer",
"Manuel",
""
]
] | We present detailed calculations for quantum-gravitational corrections to the power spectra of gauge-invariant scalar and tensor perturbations during inflation. This is done by performing a semiclassical Born-Oppenheimer type of approximation to the Wheeler-DeWitt equation, from which we obtain a Schroedinger equation ... |
gr-qc/9305002 | Ng Ka Lok | K. L. Ng | Gravitational form factors of the neutrino | TEX, need PHYZZX.TEX, 16 pages, NTU-TH-03 | Phys.Rev. D47 (1993) 5187-5190 | 10.1103/PhysRevD.47.5187 | null | gr-qc | null | The gravitational properties of the neutrino is studied in the weak field
approximation. By imposing the hermiticity condition, CPT and CP invariance on
the \em tensor matrix element, we shown that the allowed gravitational form
factors for Dirac and Majorana neutrinos are very different. In a CPT and CP
invariant th... | [
{
"created": "Mon, 3 May 1993 23:24:45 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Ng",
"K. L.",
""
]
] | The gravitational properties of the neutrino is studied in the weak field approximation. By imposing the hermiticity condition, CPT and CP invariance on the \em tensor matrix element, we shown that the allowed gravitational form factors for Dirac and Majorana neutrinos are very different. In a CPT and CP invariant theo... |
1404.0687 | Sam Dolan Dr | Carolina L. Benone, Ednilton S. de Oliveira, Sam R. Dolan and Lu\'is
C. B. Crispino | Absorption of a massive scalar field by a charged black hole | 12 pages, 12 figures. To match published version | Phys.Rev.D 89, 104053 (2014) | 10.1103/PhysRevD.89.104053 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the absorption cross section of a massive neutral scalar field
impinging upon a Reissner-Nordstr\"om black hole. First, we derive key
approximations in the high- and low-frequency regimes. Next, we develop a
numerical method to compute the cross section at intermediate frequencies, and
present a selectio... | [
{
"created": "Wed, 2 Apr 2014 20:05:26 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Jul 2014 08:22:51 GMT",
"version": "v2"
}
] | 2014-07-16 | [
[
"Benone",
"Carolina L.",
""
],
[
"de Oliveira",
"Ednilton S.",
""
],
[
"Dolan",
"Sam R.",
""
],
[
"Crispino",
"Luís C. B.",
""
]
] | We calculate the absorption cross section of a massive neutral scalar field impinging upon a Reissner-Nordstr\"om black hole. First, we derive key approximations in the high- and low-frequency regimes. Next, we develop a numerical method to compute the cross section at intermediate frequencies, and present a selection ... |
1211.6983 | S Habib Mazharimousavi | M. Halilsoy and S. Habib Mazharimousavi | Unified Bertotti-Robinson and Melvin Spacetimes | 8 pages 3 figures, major revision | Phys. Rev. D 88, 064021 (2013) [8 pages] | 10.1103/PhysRevD.88.064021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a solution for the Einstein-Maxwell (EM) equations which unifies
both the magnetic Bertotti-Robinson (BR) and Melvin (ML) solutions as a single
metric in the axially symmetric coordinates ${t,\rho,z,\varphi} $. Depending on
the strength of magnetic field the spacetime manifold, unlike the cases of
separate... | [
{
"created": "Sat, 24 Nov 2012 10:30:37 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Aug 2013 08:23:53 GMT",
"version": "v2"
}
] | 2013-09-17 | [
[
"Halilsoy",
"M.",
""
],
[
"Mazharimousavi",
"S. Habib",
""
]
] | We present a solution for the Einstein-Maxwell (EM) equations which unifies both the magnetic Bertotti-Robinson (BR) and Melvin (ML) solutions as a single metric in the axially symmetric coordinates ${t,\rho,z,\varphi} $. Depending on the strength of magnetic field the spacetime manifold, unlike the cases of separate B... |
2212.13590 | Horacio Santana Vieira | H. S. Vieira | Quasibound states of analytic black-hole configurations in three and
four dimensions | 15 pages, 6 figures, 2 tables. Matches published version in PRD | Phys. Rev. D 107, 104011 (2023) | 10.1103/PhysRevD.107.104011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we analyze the sound perturbation of Unruh's acoustic effective
geometry in both (2+1) and (3+1) spacetime dimensions and present an exact
analytical expression for the quasibound states of these idealized black-hole
configurations by using a new approach recently developed, which uses the
polynomial con... | [
{
"created": "Tue, 27 Dec 2022 19:26:21 GMT",
"version": "v1"
},
{
"created": "Mon, 22 May 2023 14:23:25 GMT",
"version": "v2"
}
] | 2023-05-23 | [
[
"Vieira",
"H. S.",
""
]
] | In this work we analyze the sound perturbation of Unruh's acoustic effective geometry in both (2+1) and (3+1) spacetime dimensions and present an exact analytical expression for the quasibound states of these idealized black-hole configurations by using a new approach recently developed, which uses the polynomial condi... |
0801.3429 | Nickolas Fotopoulos | Nickolas V Fotopoulos (for the LIGO Scientific Collaboration) | Searching for stochastic gravitational-wave background with the
co-located LIGO interferometers | Proceedings paper from the 7th Edoardo Amaldi Conference on
Gravitational Waves, held in Sydney, Australia from 8-14 July 2007. Accepted
to J. Phys.: Conf. Ser | J.Phys.Conf.Ser.122:012032,2008 | 10.1088/1742-6596/122/1/012032 | null | gr-qc | null | This paper presents techniques developed by the LIGO Scientific Collaboration
to search for the stochastic gravitational-wave background using the co-located
pair of LIGO interferometers at Hanford, WA. We use correlations between
interferometers and environment monitoring instruments, as well as time-shifts
between ... | [
{
"created": "Tue, 22 Jan 2008 17:55:47 GMT",
"version": "v1"
}
] | 2019-08-13 | [
[
"Fotopoulos",
"Nickolas V",
"",
"for the LIGO Scientific Collaboration"
]
] | This paper presents techniques developed by the LIGO Scientific Collaboration to search for the stochastic gravitational-wave background using the co-located pair of LIGO interferometers at Hanford, WA. We use correlations between interferometers and environment monitoring instruments, as well as time-shifts between tw... |
1609.04332 | Andrei Dubikovsky | K.V. Antipin, A.I. Dubikovsky, P.K. Silaev | Properties of collapse dynamics in relativistic theory of gravitation in
the case of smooth initial matter distributions | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use both numerical and analytical approaches to study the dynamics of the
gravitational collapse in the framework of the relativistic theory of
gravitation (RTG). We use various equations of state for the collapsing matter
and relatively realistic initial conditions with smooth matter distribution,
which correspon... | [
{
"created": "Wed, 14 Sep 2016 16:18:06 GMT",
"version": "v1"
}
] | 2016-09-15 | [
[
"Antipin",
"K. V.",
""
],
[
"Dubikovsky",
"A. I.",
""
],
[
"Silaev",
"P. K.",
""
]
] | We use both numerical and analytical approaches to study the dynamics of the gravitational collapse in the framework of the relativistic theory of gravitation (RTG). We use various equations of state for the collapsing matter and relatively realistic initial conditions with smooth matter distribution, which corresponds... |
1801.00133 | Yu-Ping Wang | Yu-Ping Wang | A Model of the Collapse and Evaporation of Charged Black Holes | 23 pages, 3 figures; fixed typo | null | 10.1088/1361-6382/aae256 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, a natural generalization of KMY model is proposed for the
evaporation of charged black holes. Within the proposed model, the back
reaction of Hawking radiation is considered. More specifically, we consider the
equation $G_{\mu\nu} = 8\pi \langle T_{\mu\nu}\rangle$, in which the matter
content $\langle ... | [
{
"created": "Sat, 30 Dec 2017 13:32:16 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Mar 2018 12:47:22 GMT",
"version": "v2"
}
] | 2018-10-24 | [
[
"Wang",
"Yu-Ping",
""
]
] | In this paper, a natural generalization of KMY model is proposed for the evaporation of charged black holes. Within the proposed model, the back reaction of Hawking radiation is considered. More specifically, we consider the equation $G_{\mu\nu} = 8\pi \langle T_{\mu\nu}\rangle$, in which the matter content $\langle T_... |
1107.5185 | Jacek Puchta M.Sc. | Marcin Kisielowski, Jerzy Lewandowski, Jacek Puchta | Feynman diagrammatic approach to spin foams | 36 pages, 23 figures | null | 10.1088/0264-9381/29/1/015009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | "The Spin Foams for People Without the 3d/4d Imagination" could be an
alternative title of our work. We derive spin foams from operator spin network
diagrams} we introduce. Our diagrams are the spin network analogy of the
Feynman diagrams. Their framework is compatible with the framework of Loop
Quantum Gravity. For ... | [
{
"created": "Tue, 26 Jul 2011 11:59:05 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Kisielowski",
"Marcin",
""
],
[
"Lewandowski",
"Jerzy",
""
],
[
"Puchta",
"Jacek",
""
]
] | "The Spin Foams for People Without the 3d/4d Imagination" could be an alternative title of our work. We derive spin foams from operator spin network diagrams} we introduce. Our diagrams are the spin network analogy of the Feynman diagrams. Their framework is compatible with the framework of Loop Quantum Gravity. For ev... |
gr-qc/0608087 | Peter Hogan | C. Barrabes and P. A. Hogan | The Bell-Szekeres Solution and Related Solutions of the Einstein-Maxwell
Equations | 18 pages, Latex file | Class.Quant.Grav. 23 (2006) 5265-5278 | 10.1088/0264-9381/23/17/010 | null | gr-qc | null | A novel technique for solving some head-on collisions of plane homogeneous
light-like signals in Einstein-Maxwell theory is described. The technique is a
by-product of a re-examination of the fundamental Bell-Szekeres solution in
this field of study. Extensions of the Bell-Szekeres collision problem to
include light-... | [
{
"created": "Fri, 18 Aug 2006 08:57:28 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Barrabes",
"C.",
""
],
[
"Hogan",
"P. A.",
""
]
] | A novel technique for solving some head-on collisions of plane homogeneous light-like signals in Einstein-Maxwell theory is described. The technique is a by-product of a re-examination of the fundamental Bell-Szekeres solution in this field of study. Extensions of the Bell-Szekeres collision problem to include light-li... |
gr-qc/9412065 | Justin D. Hayward | J. D. Hayward | Entropy in the RST Model | 10 pages, minor revisions, published version in Latex | Phys.Rev. D52 (1995) 2239-2244 | 10.1103/PhysRevD.52.2239 | DAMTP-R94/61 | gr-qc hep-th | null | The RST Model is given boundary term and Z-field so that it is well-posed and
local. The Euclidean method is described for general theory and used to
calculate the RST intrinsic entropy. The evolution of this entropy for the
shockwave solutions is found and obeys a second law.
| [
{
"created": "Wed, 21 Dec 1994 12:12:00 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Aug 1995 15:51:59 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Hayward",
"J. D.",
""
]
] | The RST Model is given boundary term and Z-field so that it is well-posed and local. The Euclidean method is described for general theory and used to calculate the RST intrinsic entropy. The evolution of this entropy for the shockwave solutions is found and obeys a second law. |
gr-qc/0502096 | Pavel Krtous | Pavel Krtous, Jiri Podolsky | Asymptotic directional structure of radiation for fields of algebraic
type D | 20 pages, 6 figures | Czech.J.Phys. 55 (2005) 119-138 | 10.1007/BF03031996 | null | gr-qc | null | The directional behavior of dominant components of algebraically special
spin-s fields near a spacelike, timelike or null conformal infinity is studied.
By extending our previous general investigations we concentrate on fields which
admit a pair of equivalent algebraically special null directions, such as the
Petrov ... | [
{
"created": "Tue, 22 Feb 2005 17:21:53 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Krtous",
"Pavel",
""
],
[
"Podolsky",
"Jiri",
""
]
] | The directional behavior of dominant components of algebraically special spin-s fields near a spacelike, timelike or null conformal infinity is studied. By extending our previous general investigations we concentrate on fields which admit a pair of equivalent algebraically special null directions, such as the Petrov ty... |
1402.0205 | Jian-Yang Zhu | Xiao-Min Zhang and Jian-Yang Zhu | Extension of warm inflation to noncanonical scalar fields | 7 pages, 0 figures, accepted by Physical Review D | Phys. Rev. D 90, 123519 (2014) | 10.1103/PhysRevD.90.123519 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the warm inflationary scenario to the case of the noncanonical
scalar fields. The equation of motion and the other basic equations of this new
scenario are obtained. The Hubble damped term is enhanced in noncanonical
inflation. A linear stability analysis is performed to give the proper
slow-roll conditions... | [
{
"created": "Sun, 2 Feb 2014 15:35:38 GMT",
"version": "v1"
},
{
"created": "Sun, 14 Dec 2014 14:34:25 GMT",
"version": "v2"
}
] | 2014-12-24 | [
[
"Zhang",
"Xiao-Min",
""
],
[
"Zhu",
"Jian-Yang",
""
]
] | We extend the warm inflationary scenario to the case of the noncanonical scalar fields. The equation of motion and the other basic equations of this new scenario are obtained. The Hubble damped term is enhanced in noncanonical inflation. A linear stability analysis is performed to give the proper slow-roll conditions i... |
2101.07790 | Koray D\"uzta\c{s} | Koray D\"uzta\c{s} | The variational method, backreactions, and the absorption probability in
Wald type problems | Accepted to appear in European Physical Journal C | null | 10.1140/epjc/s10052-021-08879-2 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We argue that the variational method in Wald type thought experiments,
involves order of magnitude problems when one imposes the fact that $\delta M$
is inherently a first order quantity itself. One observes that the contribution
of the second order perturbations is actually of the fourth order. Therefore
backreactio... | [
{
"created": "Mon, 18 Jan 2021 22:06:02 GMT",
"version": "v1"
}
] | 2021-01-21 | [
[
"Düztaş",
"Koray",
""
]
] | We argue that the variational method in Wald type thought experiments, involves order of magnitude problems when one imposes the fact that $\delta M$ is inherently a first order quantity itself. One observes that the contribution of the second order perturbations is actually of the fourth order. Therefore backreactions... |
2111.14773 | Paolo Meda | Paolo Meda | Trace anomaly and evaporation of spherical black holes | 14 pages, 3 figure. Contribution to the Proceedings of the Sixteenth
Marcel Grossmann Meeting (MG16), July 5-10 (2021). Minor corrections added
with respect to the submitted proceeding | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The evaporation of four-dimensional spherically symmetric black holes is
presented in the framework of quantum field theory in curved spacetimes and
semiclassical gravity. It is discussed how the evaporation process can be
sourced by the presence of the trace anomaly of a massless, conformally coupled
scalar field ou... | [
{
"created": "Mon, 29 Nov 2021 18:32:52 GMT",
"version": "v1"
}
] | 2021-11-30 | [
[
"Meda",
"Paolo",
""
]
] | The evaporation of four-dimensional spherically symmetric black holes is presented in the framework of quantum field theory in curved spacetimes and semiclassical gravity. It is discussed how the evaporation process can be sourced by the presence of the trace anomaly of a massless, conformally coupled scalar field outs... |
1002.0648 | Jun Ren | Jun Ren and Cheng-Min Zhang | Neutrino oscillations in Kerr-Newman space-time | 20 pages, no figures | Class. Quantum Grav. 27: 065011,2010 | 10.1088/0264-9381/27/6/065011 | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | The mass neutrino oscillation in Kerr-Newman(K-N) space-time is studied in
the plane $\theta=\theta_{0}$, and the general equations of oscillation phases
are given. The effect of the rotation and electric charge on the phase is
presented. Then, we consider three special cases: (1) The neutrinos travel
along the geode... | [
{
"created": "Wed, 3 Feb 2010 05:35:22 GMT",
"version": "v1"
}
] | 2010-03-03 | [
[
"Ren",
"Jun",
""
],
[
"Zhang",
"Cheng-Min",
""
]
] | The mass neutrino oscillation in Kerr-Newman(K-N) space-time is studied in the plane $\theta=\theta_{0}$, and the general equations of oscillation phases are given. The effect of the rotation and electric charge on the phase is presented. Then, we consider three special cases: (1) The neutrinos travel along the geodesi... |
gr-qc/9812015 | Patrice Hello | N. Arnaud, M. Davier, F. Cavalier and P.Hello | Detection of gravitational wave bursts by interferometric detectors | 15 pages, 8 figures | Phys.Rev.D59:082002,1999 | 10.1103/PhysRevD.59.082002 | null | gr-qc | null | We study in this paper some filters for the detection of burst-like signals
in the data of interferometric gravitational-wave detectors. We present first
two general (non-linear) filters with no {\it a priori} assumption on the
waveforms to detect. A third filter, a peak correlator, is also introduced and
permits to ... | [
{
"created": "Fri, 4 Dec 1998 16:21:36 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Arnaud",
"N.",
""
],
[
"Davier",
"M.",
""
],
[
"Cavalier",
"F.",
""
],
[
"Hello",
"P.",
""
]
] | We study in this paper some filters for the detection of burst-like signals in the data of interferometric gravitational-wave detectors. We present first two general (non-linear) filters with no {\it a priori} assumption on the waveforms to detect. A third filter, a peak correlator, is also introduced and permits to es... |
gr-qc/9405033 | Erik A. Martinez | Erik A. Martinez | Quasilocal Energy for a Kerr black hole | 22 pages, Revtex, Alberta-Thy-18-94. (the approximations in Section
IV have been improved. To appear in Phys. Rev. D ) | Phys.Rev. D50 (1994) 4920-4928 | 10.1103/PhysRevD.50.4920 | null | gr-qc | null | The quasilocal energy associated with a constant stationary time slice of the
Kerr spacetime is presented. The calculations are based on a recent proposal
\cite{by} in which quasilocal energy is derived from the Hamiltonian of
spatially bounded gravitational systems. Three different classes of boundary
surfaces for... | [
{
"created": "Fri, 13 May 1994 14:45:31 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Sep 1994 19:36:14 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Martinez",
"Erik A.",
""
]
] | The quasilocal energy associated with a constant stationary time slice of the Kerr spacetime is presented. The calculations are based on a recent proposal \cite{by} in which quasilocal energy is derived from the Hamiltonian of spatially bounded gravitational systems. Three different classes of boundary surfaces for the... |
gr-qc/9809079 | Jose Acacio de Barros | J. Acacio de Barros, N. Pinto-Neto, I. L. Shapiro | Quantum gravity correction, evolution of scalar field and inflation | 11 pages, 3 figures | Class.Quant.Grav. 16 (1999) 1773-1782 | 10.1088/0264-9381/16/6/311 | null | gr-qc hep-th | null | We take the first nontrivial coefficient of the Schwinger-DeWitt expansion as
a leading correction to the action of the second-derivative metric-dilaton
gravity. To fix the ambiguities related with an arbitrary choice of the gauge
fixing condition and the parametrization for the quantum field, one has to use
the clas... | [
{
"created": "Mon, 28 Sep 1998 21:24:25 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"de Barros",
"J. Acacio",
""
],
[
"Pinto-Neto",
"N.",
""
],
[
"Shapiro",
"I. L.",
""
]
] | We take the first nontrivial coefficient of the Schwinger-DeWitt expansion as a leading correction to the action of the second-derivative metric-dilaton gravity. To fix the ambiguities related with an arbitrary choice of the gauge fixing condition and the parametrization for the quantum field, one has to use the classi... |
2209.04584 | Miguel Cruz | Miguel Cruz, Samuel Lepe and Germ\'an E. Soto | Phantom cosmologies from QCD ghost dark energy | 16 pages, 1 figure. Accepted for publication in PRD | Phys. Rev. D 106, 103508 (2022) | 10.1103/PhysRevD.106.103508 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review a dynamical dark energy model scarcely studied in the literature
and we introduce two possible generalizations. We discuss separately the
behavior of the original model and a minimal extension of it by exploring some
early and late times limits, we find that the cosmic components are related by
their parame... | [
{
"created": "Sat, 10 Sep 2022 03:36:38 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Nov 2022 12:33:35 GMT",
"version": "v2"
}
] | 2022-11-16 | [
[
"Cruz",
"Miguel",
""
],
[
"Lepe",
"Samuel",
""
],
[
"Soto",
"Germán E.",
""
]
] | We review a dynamical dark energy model scarcely studied in the literature and we introduce two possible generalizations. We discuss separately the behavior of the original model and a minimal extension of it by exploring some early and late times limits, we find that the cosmic components are related by their paramete... |
gr-qc/9511048 | Evan Reidell | R. Jackiw (MIT) | Two lectures on Two-Dimensional Gravity | 23 pages in REVTeX. Talk presented at LASSF II, Caracas, Venezuela,
October 1995 | null | null | MIT-CTP-2486 | gr-qc hep-th | null | (from the talk:) I shall here speak on gravity in (1+1)-dimensional
space-time --- lineal gravity. The purpose of studying lower dimensional
theories, and specifically lower dimensional gravity, is to gain insight into
difficult conceptional issues, which are present and even more opaque in the
physical (3+1)-dimensi... | [
{
"created": "Thu, 16 Nov 1995 21:47:35 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Jackiw",
"R.",
"",
"MIT"
]
] | (from the talk:) I shall here speak on gravity in (1+1)-dimensional space-time --- lineal gravity. The purpose of studying lower dimensional theories, and specifically lower dimensional gravity, is to gain insight into difficult conceptional issues, which are present and even more opaque in the physical (3+1)-dimension... |
0809.3156 | Riccardo Sturani | Hillary Sanctuary and Riccardo Sturani | Effective field theory analysis of the self-interacting chameleon | 15 pages, 2 figures. Final version accepted for publication on
General Relativity and Gravitation | Gen.Rel.Grav.42:1953-1967,2010 | 10.1007/s10714-010-0974-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse the phenomenology of a self-interacting scalar field in the
context of the chameleon scenario originally proposed by Khoury and Weltman. In
the absence of self-interactions, this type of scalar field can mediate long
range interactions and simultaneously evade constraints from violation of the
weak equival... | [
{
"created": "Thu, 18 Sep 2008 13:27:43 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Apr 2010 11:19:01 GMT",
"version": "v2"
}
] | 2014-11-18 | [
[
"Sanctuary",
"Hillary",
""
],
[
"Sturani",
"Riccardo",
""
]
] | We analyse the phenomenology of a self-interacting scalar field in the context of the chameleon scenario originally proposed by Khoury and Weltman. In the absence of self-interactions, this type of scalar field can mediate long range interactions and simultaneously evade constraints from violation of the weak equivalen... |
1711.02973 | Giulia Gubitosi | Giulia Gubitosi, Joao Magueijo | Squeezing of scalar and tensor primordial perturbations generated by
modified dispersion relations | null | Phys. Rev. D 97, 063502 (2018) | 10.1103/PhysRevD.97.063502 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In recent work we analyzed the evolution of primordial perturbations
satisfying Planck-scale-modified dispersion relations and showed that there is
no cosmological "squeezing" in the critical model that produces perturbations
with a scale invariant spectrum. Nevertheless, the perturbations reenter the
horizon as stan... | [
{
"created": "Wed, 8 Nov 2017 14:41:54 GMT",
"version": "v1"
}
] | 2018-03-07 | [
[
"Gubitosi",
"Giulia",
""
],
[
"Magueijo",
"Joao",
""
]
] | In recent work we analyzed the evolution of primordial perturbations satisfying Planck-scale-modified dispersion relations and showed that there is no cosmological "squeezing" in the critical model that produces perturbations with a scale invariant spectrum. Nevertheless, the perturbations reenter the horizon as standi... |
1102.2857 | Jonathan Thornburg | Jonathan Thornburg | The Capra Research Program for Modelling Extreme Mass Ratio Inspirals | 29 pages, 4 figures, invited review to appear in GW Notes
(http://brownbag.lisascience.org/lisa-gw-notes/) | null | null | null | gr-qc astro-ph.CO astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Suppose a small compact object (black hole or neutron star) of mass $m$
orbits a large black hole of mass $M \gg m$. This system emits gravitational
waves (GWs) that have a radiation-reaction effect on the particle's motion.
EMRIs (extreme--mass-ratio inspirals) of this type will be important GW sources
for LISA; LIS... | [
{
"created": "Mon, 14 Feb 2011 19:06:38 GMT",
"version": "v1"
}
] | 2011-02-15 | [
[
"Thornburg",
"Jonathan",
""
]
] | Suppose a small compact object (black hole or neutron star) of mass $m$ orbits a large black hole of mass $M \gg m$. This system emits gravitational waves (GWs) that have a radiation-reaction effect on the particle's motion. EMRIs (extreme--mass-ratio inspirals) of this type will be important GW sources for LISA; LISA'... |
2002.02501 | Nathaniel Strauss | Nathaniel A. Strauss, Bernard F. Whiting, and Anne T. Franzen | Classical Tools for Antipodal Identification in Reissner-Nordstr\"om
Spacetime | 35 pages, 17 figures | Class. Quant. Grav. 37 (2020) 18, 185006 | 10.1088/1361-6382/ab9a9d | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the discussion of the antipodal identification of black holes to
the Reissner-Nordstr\"om (RN) spacetime by developing the classical tools
necessary to define the corresponding quantum field theory (QFT). We solve the
massless Klein-Gordon equation in the RN background in terms of scattering
coefficients an... | [
{
"created": "Thu, 6 Feb 2020 20:20:37 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Feb 2020 00:36:23 GMT",
"version": "v2"
},
{
"created": "Sun, 20 Sep 2020 19:58:33 GMT",
"version": "v3"
}
] | 2020-09-22 | [
[
"Strauss",
"Nathaniel A.",
""
],
[
"Whiting",
"Bernard F.",
""
],
[
"Franzen",
"Anne T.",
""
]
] | We extend the discussion of the antipodal identification of black holes to the Reissner-Nordstr\"om (RN) spacetime by developing the classical tools necessary to define the corresponding quantum field theory (QFT). We solve the massless Klein-Gordon equation in the RN background in terms of scattering coefficients and ... |
gr-qc/9702060 | null | H.Balasin | Distributional energy momentum tensor of the extended Kerr geometry | 12 pages, latex2e, amslatex and epsf macros | Class.Quant.Grav. 14 (1997) 3353-3362 | 10.1088/0264-9381/14/12/018 | TUW97-03 | gr-qc | null | We generalize previous work on the energy-momentum tensor-distribution of the
Kerr geometry by extending the manifold structure into the negative mass
region. Since the extension of the flat part of the Kerr-Schild decomposition
from one sheet to the double cover develops a singularity at the branch surface
we have t... | [
{
"created": "Thu, 27 Feb 1997 23:01:32 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Balasin",
"H.",
""
]
] | We generalize previous work on the energy-momentum tensor-distribution of the Kerr geometry by extending the manifold structure into the negative mass region. Since the extension of the flat part of the Kerr-Schild decomposition from one sheet to the double cover develops a singularity at the branch surface we have to ... |
2107.04848 | Yu-Xiao Liu | Yu-Peng Zhang, Yan-Bo Zeng, Yong-Qiang Wang, Shao-Wen Wei, and Yu-Xiao
Liu | Motion of test particle in rotating boson star | 17 pages, 16 figures | Phys. Rev. D 105 (2022) 044021 | 10.1103/PhysRevD.105.044021 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Motion of a test particle plays an important role in understanding the
properties of a spacetime. As a new type of the strong gravity system, boson
stars could mimic black holes located at the center of galaxies. Studying the
motion of a test particle in the spacetime of a rotating boson star will
provide the astroph... | [
{
"created": "Sat, 10 Jul 2021 14:34:27 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Apr 2022 16:13:19 GMT",
"version": "v2"
}
] | 2024-02-26 | [
[
"Zhang",
"Yu-Peng",
""
],
[
"Zeng",
"Yan-Bo",
""
],
[
"Wang",
"Yong-Qiang",
""
],
[
"Wei",
"Shao-Wen",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | Motion of a test particle plays an important role in understanding the properties of a spacetime. As a new type of the strong gravity system, boson stars could mimic black holes located at the center of galaxies. Studying the motion of a test particle in the spacetime of a rotating boson star will provide the astrophys... |
1306.5784 | Alcides Garat | Alcides Garat | The Monopole and the Coulomb field as duals within the unifying
Reissner-Nordstrom geometry | 10 pages. arXiv admin note: substantial text overlap with
arXiv:1306.0602, arXiv:1306.4005, arXiv:1306.2174 | Commun.Theor.Phys. 61 (2014) 699-702 | 10.1088/0253-6102/61/6/07 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We are going to prove that the Monopole and the Coulomb fields are duals
within the unifying structure provided by the Reissner-Nordstrom spacetime.
This is accomplished when noticing that in order to produce the tetrad that
locally and covariantly diagonalizes the stress-energy tensor, both the
Monopole and the Coul... | [
{
"created": "Mon, 24 Jun 2013 21:07:25 GMT",
"version": "v1"
}
] | 2024-07-16 | [
[
"Garat",
"Alcides",
""
]
] | We are going to prove that the Monopole and the Coulomb fields are duals within the unifying structure provided by the Reissner-Nordstrom spacetime. This is accomplished when noticing that in order to produce the tetrad that locally and covariantly diagonalizes the stress-energy tensor, both the Monopole and the Coulom... |
gr-qc/0301073 | Piotr Chrusciel | Piotr T. Chrusciel, Erwann Delay | On mapping properties of the general relativistic constraints operator
in weighted function spaces, with applications | latex2e, now 87 pages, several style files; various typos corrected,
treatment of weighted Hoelder spaces improved, to appear in Memoires de la
Societe Mathematique de France | Mem.Soc.Math.France 94 (2003) 1-103 | null | null | gr-qc | null | Generalising an analysis of Corvino and Schoen, we study surjectivity
properties of the constraint map in general relativity in a large class of
weighted Sobolev spaces. As a corollary we prove several perturbation, gluing,
and extension results: we show existence of non-trivial, singularity-free,
vacuum space-times ... | [
{
"created": "Tue, 21 Jan 2003 07:44:14 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Jul 2003 08:26:03 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Chrusciel",
"Piotr T.",
""
],
[
"Delay",
"Erwann",
""
]
] | Generalising an analysis of Corvino and Schoen, we study surjectivity properties of the constraint map in general relativity in a large class of weighted Sobolev spaces. As a corollary we prove several perturbation, gluing, and extension results: we show existence of non-trivial, singularity-free, vacuum space-times wh... |
1301.3918 | Niels Warburton | Niels Warburton, Leor Barack, Norichika Sago | Isofrequency pairing of geodesic orbits in Kerr geometry | 11 pages, 8 figures. Updated to reflect published version | Phys. Rev. D 87, 084012 (2013) | 10.1103/PhysRevD.87.084012 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bound geodesic orbits around a Kerr black hole can be parametrized by three
constants of the motion: the (specific) orbital energy, angular momentum and
Carter constant. Generically, each orbit also has associated with it three
frequencies, related to the radial, longitudinal and (mean) azimuthal motions.
Here we not... | [
{
"created": "Wed, 16 Jan 2013 21:04:16 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Apr 2013 18:55:24 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"Warburton",
"Niels",
""
],
[
"Barack",
"Leor",
""
],
[
"Sago",
"Norichika",
""
]
] | Bound geodesic orbits around a Kerr black hole can be parametrized by three constants of the motion: the (specific) orbital energy, angular momentum and Carter constant. Generically, each orbit also has associated with it three frequencies, related to the radial, longitudinal and (mean) azimuthal motions. Here we note ... |
0705.3098 | Jiri Podolsky | Jiri Podolsky, David Kofron | Chaotic motion in Kundt spacetimes | 15 pages, 9 figures. To appear in Classical and Quantum Gravity | Class.Quant.Grav.24:3413-3424,2007 | 10.1088/0264-9381/24/13/016 | null | gr-qc | null | We demonstrate that geodesics in exact vacuum Kundt gravitational waves may
exhibit a highly complicated behaviour. In fact, as in the previously studied
case of non-homogeneous pp-waves, for specific choices of the structural
function the motion appears to be genuinely chaotic. This fact is demonstrated
by the fract... | [
{
"created": "Tue, 22 May 2007 07:04:19 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Podolsky",
"Jiri",
""
],
[
"Kofron",
"David",
""
]
] | We demonstrate that geodesics in exact vacuum Kundt gravitational waves may exhibit a highly complicated behaviour. In fact, as in the previously studied case of non-homogeneous pp-waves, for specific choices of the structural function the motion appears to be genuinely chaotic. This fact is demonstrated by the fractal... |
gr-qc/0203092 | Esposito Giampiero | Giampiero Esposito and Cosimo Stornaiolo | On the Riemann Function and Irregular Singular Points for Axisymmetric
Black Hole Collisions at the Speed of Light | 13 pages, plain Tex | null | null | DSF preprint 2002/7 | gr-qc | null | The news function providing some relevant information about angular
distribution of gravitational radiation in axisymmetric black hole collisions
at the speed of light had been evaluated in the literature by perturbation
methods, after inverting second-order hyperbolic operators with variable
coefficients in two inde... | [
{
"created": "Tue, 26 Mar 2002 13:05:14 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Esposito",
"Giampiero",
""
],
[
"Stornaiolo",
"Cosimo",
""
]
] | The news function providing some relevant information about angular distribution of gravitational radiation in axisymmetric black hole collisions at the speed of light had been evaluated in the literature by perturbation methods, after inverting second-order hyperbolic operators with variable coefficients in two indepe... |
1503.05164 | Alexander Grant | Alexander Grant, Eanna E. Flanagan | Non-conservation of Carter in black hole spacetimes | 5 pages, 1 figure, (v2) typos corrected, some clarifications and
appendix B added | null | 10.1088/0264-9381/32/15/157001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Freely falling point particles in the vicinity of Kerr black holes are
subject to a conservation law, that of their Carter constant. We consider the
conjecture that this conservation law is a special case of a more general
conservation law, valid for arbitrary processes obeying local energy momentum
conservation. Und... | [
{
"created": "Tue, 17 Mar 2015 18:55:28 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jun 2015 19:42:24 GMT",
"version": "v2"
}
] | 2015-08-06 | [
[
"Grant",
"Alexander",
""
],
[
"Flanagan",
"Eanna E.",
""
]
] | Freely falling point particles in the vicinity of Kerr black holes are subject to a conservation law, that of their Carter constant. We consider the conjecture that this conservation law is a special case of a more general conservation law, valid for arbitrary processes obeying local energy momentum conservation. Under... |
gr-qc/0702086 | Francisco Navarro-Lerida | Jutta Kunz, Francisco Navarro-Lerida, and Eugen Radu | Higher dimensional rotating black holes in Einstein-Maxwell theory with
negative cosmological constant | 11 pages, 8 figures | Phys.Lett.B649:463-471,2007 | 10.1016/j.physletb.2007.04.030 | null | gr-qc hep-th | null | We present arguments for the existence of charged, rotating black holes with
equal-magnitude angular momenta in an odd number of dimensions $D\geq 5$. These
solutions posses a regular horizon of spherical topology and approach
asymptotically the Anti-de Sitter spacetime background. We analyze their global
charges, th... | [
{
"created": "Thu, 15 Feb 2007 10:11:51 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kunz",
"Jutta",
""
],
[
"Navarro-Lerida",
"Francisco",
""
],
[
"Radu",
"Eugen",
""
]
] | We present arguments for the existence of charged, rotating black holes with equal-magnitude angular momenta in an odd number of dimensions $D\geq 5$. These solutions posses a regular horizon of spherical topology and approach asymptotically the Anti-de Sitter spacetime background. We analyze their global charges, thei... |
0902.0790 | Harald P. Pfeiffer | Alessandra Buonanno, Yi Pan, Harald P. Pfeiffer, Mark A. Scheel, Luisa
T. Buchman, Lawrence E. Kidder | Effective-one-body waveforms calibrated to numerical relativity
simulations: coalescence of non-spinning, equal-mass black holes | 19 pages, 19 figures. Two improvements to our analytical model:
non-quasi-circular correction based on post-Newtonian theory and hybrid comb
matching to attach ring-down modes. No substantial modification to any
results. Figures and numbers are slightly changed, accordingly. Corrected a
few typos and added a fe... | Phys.Rev.D79:124028,2009 | 10.1103/PhysRevD.79.124028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calibrate the effective-one-body (EOB) model to an accurate numerical
simulation of an equal-mass, non-spinning binary black-hole coalescence
produced by the Caltech-Cornell collaboration. Aligning the EOB and numerical
waveforms at low frequency over a time interval of ~1000M, and taking into
account the uncertai... | [
{
"created": "Wed, 4 Feb 2009 20:51:32 GMT",
"version": "v1"
},
{
"created": "Tue, 12 May 2009 02:37:09 GMT",
"version": "v2"
}
] | 2009-08-03 | [
[
"Buonanno",
"Alessandra",
""
],
[
"Pan",
"Yi",
""
],
[
"Pfeiffer",
"Harald P.",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Buchman",
"Luisa T.",
""
],
[
"Kidder",
"Lawrence E.",
""
]
] | We calibrate the effective-one-body (EOB) model to an accurate numerical simulation of an equal-mass, non-spinning binary black-hole coalescence produced by the Caltech-Cornell collaboration. Aligning the EOB and numerical waveforms at low frequency over a time interval of ~1000M, and taking into account the uncertaint... |
0803.0390 | Donato Bini | Donato Bini, Christian Cherubini, Carmen Chicone, Bahram Mashhoon | Gravitational induction | Slightly expanded version | Class.Quant.Grav.25:225014,2008 | 10.1088/0264-9381/25/22/225014 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the linear post-Newtonian approximation to general relativity known
as gravitoelectromagnetism (GEM); in particular, we examine the similarities
and differences between GEM and electrodynamics. Notwithstanding some
significant differences between them, we find that a special nonstationary
metric in GEM can b... | [
{
"created": "Tue, 4 Mar 2008 09:00:21 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Nov 2008 09:09:15 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Bini",
"Donato",
""
],
[
"Cherubini",
"Christian",
""
],
[
"Chicone",
"Carmen",
""
],
[
"Mashhoon",
"Bahram",
""
]
] | We study the linear post-Newtonian approximation to general relativity known as gravitoelectromagnetism (GEM); in particular, we examine the similarities and differences between GEM and electrodynamics. Notwithstanding some significant differences between them, we find that a special nonstationary metric in GEM can be ... |
gr-qc/0502053 | Eugen Radu | Yves Brihaye and Eugen Radu | Nutty dyons | 12 pages, 4 figures, discussion extended, typos corrected | Phys.Lett. B615 (2005) 1-13 | 10.1016/j.physletb.2005.04.016 | null | gr-qc hep-th | null | We argue that the Einstein-Yang-Mills-Higgs theory presents nontrivial
solutions with a NUT charge. These solutions approach asymptotically the
Taub-NUT spacetime and generalize the known dyon black hole configurations. The
main properties of the solutions and the differences with respect to the
asymptotically flat c... | [
{
"created": "Fri, 11 Feb 2005 12:11:07 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Apr 2005 09:09:24 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Brihaye",
"Yves",
""
],
[
"Radu",
"Eugen",
""
]
] | We argue that the Einstein-Yang-Mills-Higgs theory presents nontrivial solutions with a NUT charge. These solutions approach asymptotically the Taub-NUT spacetime and generalize the known dyon black hole configurations. The main properties of the solutions and the differences with respect to the asymptotically flat cas... |
gr-qc/9311004 | Hugh Luckock | R. Graham and H. Luckock | The Hartle-Hawking state for the Bianchi IX model in supergravity | 9 pages, University of Sydney Mathematics Report 93-50 | Phys.Rev.D49:4981-4984,1994 | 10.1103/PhysRevD.49.R4981 | null | gr-qc | null | We solve the quantum constraints for homogeneous N=1 supergravity on
3-geometries with a Bianchi IX metric. Because these geometries admit Killing
vectors with the same commutation relations as the angular momentum generators,
there are two distinct definitions of homogeneity. The first of these is
well-known and has... | [
{
"created": "Thu, 4 Nov 1993 00:23:32 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Nov 1993 23:17:35 GMT",
"version": "v2"
}
] | 2010-01-06 | [
[
"Graham",
"R.",
""
],
[
"Luckock",
"H.",
""
]
] | We solve the quantum constraints for homogeneous N=1 supergravity on 3-geometries with a Bianchi IX metric. Because these geometries admit Killing vectors with the same commutation relations as the angular momentum generators, there are two distinct definitions of homogeneity. The first of these is well-known and has b... |
2203.11459 | Chandrachur Chakraborty | Chandrachur Chakraborty (IISc / MCNS-MAHE), Banibrata Mukhopadhyay
(IISc) | Spin precession in the gravity wave analogue black hole spacetime | 12 pages including 4 figures; Version published in Universe | Universe 8, 193 (2022) | 10.3390/universe8030193 | null | gr-qc astro-ph.HE cond-mat.other physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was predicted that the spin precession frequency of a stationary gyroscope
shows various anomalies in the strong gravity regime if its orbit shrinks, and
eventually its precession frequency becomes arbitrarily high very close to the
horizon of a rotating black hole. Considering the gravity waves of a flowing
fluid... | [
{
"created": "Tue, 22 Mar 2022 04:50:17 GMT",
"version": "v1"
}
] | 2022-03-24 | [
[
"Chakraborty",
"Chandrachur",
"",
"IISc / MCNS-MAHE"
],
[
"Mukhopadhyay",
"Banibrata",
"",
"IISc"
]
] | It was predicted that the spin precession frequency of a stationary gyroscope shows various anomalies in the strong gravity regime if its orbit shrinks, and eventually its precession frequency becomes arbitrarily high very close to the horizon of a rotating black hole. Considering the gravity waves of a flowing fluid w... |
gr-qc/0205047 | Patrizia Vitale | F. Canfora, G. Vilasi and P. Vitale | Nonlinear gravitational waves and their polarization | 9 pages. LateX. Minor corrections | Phys.Lett. B545 (2002) 373-378 | 10.1016/S0370-2693(02)02622-9 | null | gr-qc | null | Vacuum gravitational fields invariant for a non Abelian Lie algebra generated
by two Killing fields whose commutator is light-like are analyzed. It is shown
that they represent nonlinear gravitational waves obeying to two nonlinear
superposition laws. The energy and the polarization of this family of waves are
explic... | [
{
"created": "Sun, 12 May 2002 14:33:49 GMT",
"version": "v1"
},
{
"created": "Mon, 27 May 2002 10:44:07 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Canfora",
"F.",
""
],
[
"Vilasi",
"G.",
""
],
[
"Vitale",
"P.",
""
]
] | Vacuum gravitational fields invariant for a non Abelian Lie algebra generated by two Killing fields whose commutator is light-like are analyzed. It is shown that they represent nonlinear gravitational waves obeying to two nonlinear superposition laws. The energy and the polarization of this family of waves are explicit... |
gr-qc/0411128 | Joachim Moortgat | Joachim Moortgat, Jan Kuijpers | Gravitational wave interactions with magnetized plasmas | 4 pages. Proceedings of the NATO Advanced Study Institute on the
Electromagnetic Spectrum of Neutron Stars, Marmaris, Turkey, June 2004 | null | null | null | gr-qc astro-ph | null | Gravitational waves (GWs) propagating through a uniformly magnetized plasma
interact directly with the magnetic field and excite magnetohydrodynamic (MHD)
waves with both electromagnetic and matter components. We study this process
for arbitrary geometry in the MHD approximation and find that all three
fundamental MH... | [
{
"created": "Fri, 26 Nov 2004 22:39:52 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Moortgat",
"Joachim",
""
],
[
"Kuijpers",
"Jan",
""
]
] | Gravitational waves (GWs) propagating through a uniformly magnetized plasma interact directly with the magnetic field and excite magnetohydrodynamic (MHD) waves with both electromagnetic and matter components. We study this process for arbitrary geometry in the MHD approximation and find that all three fundamental MHD ... |
1211.2110 | Anthony Walters | Anthony Walters and Charles Hellaby | Constructing Realistic Szekeres Models from Initial and Final Data | 40 pages; 18 figures; To be published in JCAP | null | 10.1088/1475-7516/2012/12/001 | uct-cosmology-2012-11-09-14:10 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Szekeres family of inhomogeneous solutions, which are defined by six
arbitrary metric functions, offers a wide range of possibilities for modelling
cosmic structure. Here we present a model construction procedure for the
quasispherical case using given data at initial and final times. Of the six
arbitrary metric ... | [
{
"created": "Fri, 9 Nov 2012 12:13:37 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Walters",
"Anthony",
""
],
[
"Hellaby",
"Charles",
""
]
] | The Szekeres family of inhomogeneous solutions, which are defined by six arbitrary metric functions, offers a wide range of possibilities for modelling cosmic structure. Here we present a model construction procedure for the quasispherical case using given data at initial and final times. Of the six arbitrary metric fu... |
gr-qc/9807068 | Jonathan Wilson | J. A. Vickers, J. P. Wilson | A nonlinear theory of tensor distributions | 16 pages, AMS-TeX | null | null | null | gr-qc | null | The coordinate invariant theory of generalised functions of Colombeau and
Meril is reviewed and extended to enable the construction of multi-index
generalised tensor functions whose transformation laws coincide with their
counterparts in classical distribution theory.
| [
{
"created": "Fri, 24 Jul 1998 09:42:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Vickers",
"J. A.",
""
],
[
"Wilson",
"J. P.",
""
]
] | The coordinate invariant theory of generalised functions of Colombeau and Meril is reviewed and extended to enable the construction of multi-index generalised tensor functions whose transformation laws coincide with their counterparts in classical distribution theory. |
gr-qc/9406001 | Haret Rosu | Haret Rosu and Marco Reyes | Shannon-Wehrl entropy for cosmological and black hole squeezing | 4 pages, 2 Figures available from the author(s), LaTex, IFUG-11/94 r,
contribution to Harmonic Oscillators 2, Cocoyoc, March 23-25/1994, To be
published in NASA Conference Series (1994/1995) | Int.J.Mod.Phys. D4 (1995) 327-332 | 10.1142/S0218271895000247 | null | gr-qc | null | We discuss the Shannon-Wehrl entropy within the squeezing vocabulary for the
cosmological and black hole particle production.
| [
{
"created": "Wed, 1 Jun 1994 23:14:00 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Rosu",
"Haret",
""
],
[
"Reyes",
"Marco",
""
]
] | We discuss the Shannon-Wehrl entropy within the squeezing vocabulary for the cosmological and black hole particle production. |
2402.07649 | Samad Khakshournia | S. Khakshournia and R. Mansouri | Revisiting effective Einstein equations on a 3-brane in the presence of
torsion | 12 pages | Gravitation and Cosmology, 2023, Vol. 29, No. 3, pp. 220-226 | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The effective Einstein equations on a 3-brane embedded in a 5-dimensional
Riemann-Cartan bulk spacetime are revisited. Addressing the shortcomings in the
hitherto published junction conditions on the brane in the presence of torsion,
we have elaborated on our general form of the junction conditions recently
published... | [
{
"created": "Mon, 12 Feb 2024 13:46:12 GMT",
"version": "v1"
}
] | 2024-02-13 | [
[
"Khakshournia",
"S.",
""
],
[
"Mansouri",
"R.",
""
]
] | The effective Einstein equations on a 3-brane embedded in a 5-dimensional Riemann-Cartan bulk spacetime are revisited. Addressing the shortcomings in the hitherto published junction conditions on the brane in the presence of torsion, we have elaborated on our general form of the junction conditions recently published. ... |
gr-qc/0601051 | Valerii Dryuma sem | Valerii Dryuma | Four-dimensional Einstein spaces on Six-dimensional Ricci-flat base
space | 9 pages | null | null | null | gr-qc nlin.SI | null | The examples of ten-dimensional vacuum Einstein spaces composed of
four-dimensional Einstein spaces and six-dimensional Ricci-flat base space
defined by the solutions of the Korteveg de-Vries equation are constructed.
| [
{
"created": "Thu, 12 Jan 2006 17:38:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Dryuma",
"Valerii",
""
]
] | The examples of ten-dimensional vacuum Einstein spaces composed of four-dimensional Einstein spaces and six-dimensional Ricci-flat base space defined by the solutions of the Korteveg de-Vries equation are constructed. |
2112.07600 | Celia Escamilla-Rivera | Carlos Ar\'aoz Alvarado and Celia Escamilla-Rivera | Modified Yang-Lee theory for nonlocal gravitational potential and their
phase transition | Version accepted in International Journal of Geometric Methods in
Modern Physics | International Journal of Geometric Methods in Modern Physics
(2022) 2250053 | 10.1142/S0219887822500530 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we describe the extension to study the thermodynamics of the
structure formation in the large scale Universe in the nonlocal gravity
formalism using standard statistical mechanics. From the derivation of the
grand partition function in a modified version of the Yang-Lee theory, we
obtained the correspo... | [
{
"created": "Tue, 14 Dec 2021 17:51:50 GMT",
"version": "v1"
}
] | 2022-01-14 | [
[
"Alvarado",
"Carlos Aráoz",
""
],
[
"Escamilla-Rivera",
"Celia",
""
]
] | In this paper, we describe the extension to study the thermodynamics of the structure formation in the large scale Universe in the nonlocal gravity formalism using standard statistical mechanics. From the derivation of the grand partition function in a modified version of the Yang-Lee theory, we obtained the correspond... |
1904.08124 | Tekin Dereli | Tekin Dereli, Cem Yeti\c{s}mi\c{s}o\u{g}lu | Weyl Covariant Theories of Gravity in Riemann-Cartan-Weyl Space-times I.
Topologically Massive Gravity | null | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss locally Weyl (scale) covariant generalisations of gravitational
theories using Riemann-Cartan-Weyl space-times in arbitrary dimensions. We
demonstrate the procedure of Weyl gauging on two examples in particular:
General relativity, and topologically massive gravity in three dimensions.
| [
{
"created": "Wed, 17 Apr 2019 08:20:36 GMT",
"version": "v1"
}
] | 2019-04-18 | [
[
"Dereli",
"Tekin",
""
],
[
"Yetişmişoğlu",
"Cem",
""
]
] | We discuss locally Weyl (scale) covariant generalisations of gravitational theories using Riemann-Cartan-Weyl space-times in arbitrary dimensions. We demonstrate the procedure of Weyl gauging on two examples in particular: General relativity, and topologically massive gravity in three dimensions. |
1908.08247 | Katarina Martinovic | Katarina Martinovic, Mairi Sakellariadou | Constraints on Quasi-dilaton Massive Gravity | 8 pages | Phys. Rev. D 100, 124016 (2019) | 10.1103/PhysRevD.100.124016 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The last decade has seen great advancements in the field of modified gravity,
motivated by the dark energy problem, or by the search for a fundamental
quantum gravity theory. With a phenomenologically-driven approach, we consider
dRGT theory and its extension, quasi-dilaton massive gravity (QDMG). When
looking for wa... | [
{
"created": "Thu, 22 Aug 2019 08:15:27 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Jan 2020 16:14:44 GMT",
"version": "v2"
}
] | 2020-01-17 | [
[
"Martinovic",
"Katarina",
""
],
[
"Sakellariadou",
"Mairi",
""
]
] | The last decade has seen great advancements in the field of modified gravity, motivated by the dark energy problem, or by the search for a fundamental quantum gravity theory. With a phenomenologically-driven approach, we consider dRGT theory and its extension, quasi-dilaton massive gravity (QDMG). When looking for ways... |
1611.00667 | Andronikos Paliathanasis | G. Papagiannopoulos, John D. Barrow, S. Basilakos, A. Giacomini and A.
Paliathanasis | Dynamical symmetries in Brans-Dicke cosmology | 15 pages; 2 figures; accepted for publication by Phys. Rev. D | Phys. Rev. D 95, 024021 (2017) | 10.1103/PhysRevD.95.024021 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of generalised Brans-Dicke cosmology we use the Killing
tensors of the minisuperspace in order to determine the unspecified potential
of a scalar-tensor gravity theory. Specifically, based on the existence of
contact symmetries of the field equations, we find four types of potentials
which provide exac... | [
{
"created": "Wed, 2 Nov 2016 16:21:55 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Dec 2016 18:20:53 GMT",
"version": "v2"
}
] | 2017-01-24 | [
[
"Papagiannopoulos",
"G.",
""
],
[
"Barrow",
"John D.",
""
],
[
"Basilakos",
"S.",
""
],
[
"Giacomini",
"A.",
""
],
[
"Paliathanasis",
"A.",
""
]
] | In the context of generalised Brans-Dicke cosmology we use the Killing tensors of the minisuperspace in order to determine the unspecified potential of a scalar-tensor gravity theory. Specifically, based on the existence of contact symmetries of the field equations, we find four types of potentials which provide exactl... |
1603.02233 | Hor\'acio Santana Vieira | H. S. Vieira, V. B. Bezerra | Confluent Heun functions and the physics of black holes: resonant
frequencies, Hawking radiation and scattering of scalar waves | 18 pages. This paper was unified and published with arXiv:1603.02240 | Annals of Physics 373 (2016) 28-42 | 10.1016/j.aop.2016.06.016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply the confluent Heun functions to study the resonant frequencies
(quasispectrum), the Hawking radiation and the scattering process of scalar
waves, in a class of spacetimes, namely, the ones generated by a
Kerr-Newman-Kasuya spacetime (dyon black hole) and a Reissner-Nordstr\"{o}m
black hole surrounded by a ma... | [
{
"created": "Mon, 7 Mar 2016 20:03:35 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jul 2016 01:31:41 GMT",
"version": "v2"
}
] | 2016-07-28 | [
[
"Vieira",
"H. S.",
""
],
[
"Bezerra",
"V. B.",
""
]
] | We apply the confluent Heun functions to study the resonant frequencies (quasispectrum), the Hawking radiation and the scattering process of scalar waves, in a class of spacetimes, namely, the ones generated by a Kerr-Newman-Kasuya spacetime (dyon black hole) and a Reissner-Nordstr\"{o}m black hole surrounded by a magn... |
0706.3757 | Yun Soo Myung | Yun Soo Myung | Instability of holographic dark energy models | 11 pages, 4 eps figures, to appear in PLB | Phys.Lett.B652:223-227,2007 | 10.1016/j.physletb.2007.07.033 | INJE-TP-07-05 | gr-qc astro-ph hep-th | null | We investigate the difference between holographic dark energy, Chaplygin gas,
and tachyon model with constant potential. For this purpose, we examine their
squared speeds of sound which are evaluated to zeroth order in perturbation
theory and hence depends only on time. We find that the squared speed for
holographic ... | [
{
"created": "Tue, 26 Jun 2007 05:09:59 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Jul 2007 04:49:54 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Myung",
"Yun Soo",
""
]
] | We investigate the difference between holographic dark energy, Chaplygin gas, and tachyon model with constant potential. For this purpose, we examine their squared speeds of sound which are evaluated to zeroth order in perturbation theory and hence depends only on time. We find that the squared speed for holographic da... |
1811.01093 | Tyson Littenberg | Tyson B. Littenberg and Nicolas Yunes | Binary White Dwarfs as Laboratories for Extreme Gravity with LISA | 18 pages, 10 figures, submitted to CQG | null | 10.1088/1361-6382/ab0a3d | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The observation of low-frequency gravitational waves with the Laser
Interferometer Space Antenna will allow the study of new sources of
gravitational radiation that are not accessible by ground-based instruments.
Gravitational wave sources provide invaluable information both about their
astrophysics, as well as the n... | [
{
"created": "Fri, 2 Nov 2018 21:17:34 GMT",
"version": "v1"
}
] | 2019-05-22 | [
[
"Littenberg",
"Tyson B.",
""
],
[
"Yunes",
"Nicolas",
""
]
] | The observation of low-frequency gravitational waves with the Laser Interferometer Space Antenna will allow the study of new sources of gravitational radiation that are not accessible by ground-based instruments. Gravitational wave sources provide invaluable information both about their astrophysics, as well as the nat... |
gr-qc/0701110 | Keisuke Taniguchi | Keisuke Taniguchi, Thomas W. Baumgarte, Joshua A. Faber, and Stuart L.
Shapiro | Quasiequilibrium black hole-neutron star binaries in general relativity | 17 pages, 15 figures, published in Phys. Rev. D | Phys.Rev.D75:084005,2007 | 10.1103/PhysRevD.75.084005 | null | gr-qc astro-ph | null | We construct quasiequilibrium sequences of black hole-neutron star binaries
in general relativity. We solve Einstein's constraint equations in the
conformal thin-sandwich formalism, subject to black hole boundary conditions
imposed on the surface of an excised sphere, together with the relativistic
equations of hydro... | [
{
"created": "Fri, 19 Jan 2007 21:00:06 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Oct 2007 19:58:58 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Taniguchi",
"Keisuke",
""
],
[
"Baumgarte",
"Thomas W.",
""
],
[
"Faber",
"Joshua A.",
""
],
[
"Shapiro",
"Stuart L.",
""
]
] | We construct quasiequilibrium sequences of black hole-neutron star binaries in general relativity. We solve Einstein's constraint equations in the conformal thin-sandwich formalism, subject to black hole boundary conditions imposed on the surface of an excised sphere, together with the relativistic equations of hydrost... |
1407.0032 | Marina Cort\^es | Marina Cort\^es and Lee Smolin | Spin foam models as energetic causal sets | 16 pages, 4 figures. v2 typo corrected, references added | Phys. Rev. D 93, 084039 (2016) | 10.1103/PhysRevD.93.084039 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Energetic causal sets are causal sets endowed by a flow of energy-momentum
between causally related events. These incorporate a novel mechanism for the
emergence of space-time from causal relations. Here we construct a spin foam
model which is also an energetic causal set model. This model is closely
related to the m... | [
{
"created": "Mon, 30 Jun 2014 20:01:01 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Jul 2014 20:03:36 GMT",
"version": "v2"
}
] | 2016-04-27 | [
[
"Cortês",
"Marina",
""
],
[
"Smolin",
"Lee",
""
]
] | Energetic causal sets are causal sets endowed by a flow of energy-momentum between causally related events. These incorporate a novel mechanism for the emergence of space-time from causal relations. Here we construct a spin foam model which is also an energetic causal set model. This model is closely related to the mod... |
gr-qc/9302017 | Don N. Page | Valery P. Frolov and Don N. Page | Proof of the Generalized Second Law for Quasistationary Semiclassical
Black Holes | 12 pages, LaTeX, report Alberta-Thy-10-93 (revision of paper in
response to Phys. Rev. Lett. referees' comments, which suffered a series of
long delays) | Phys.Rev.Lett.71:3902-3905,1993 | 10.1103/PhysRevLett.71.3902 | null | gr-qc | null | A simple direct explicit proof of the generalized second law of black hole
thermodynamics is given for a quasistationary semiclassical black hole.
| [
{
"created": "Mon, 15 Feb 1993 22:25:17 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Feb 1993 17:58:54 GMT",
"version": "v2"
},
{
"created": "Wed, 17 Feb 1993 19:03:57 GMT",
"version": "v3"
},
{
"created": "Tue, 17 Aug 1993 23:17:35 GMT",
"version": "v4"
}
] | 2010-11-01 | [
[
"Frolov",
"Valery P.",
""
],
[
"Page",
"Don N.",
""
]
] | A simple direct explicit proof of the generalized second law of black hole thermodynamics is given for a quasistationary semiclassical black hole. |
1811.05435 | Nicol\'as Lorenzo Gonz\'alez Albornoz | N.L. Gonz\'alez Albornoz, Dieter Lust, S. Salgado, Angnis Schmidt-May | 4D spin-2 fields from 5D Chern-Simons theory | 31 pages, no figures, added references | J. High Energ. Phys. (2018) 2018: 26 | 10.1007/JHEP12(2018)026 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a 5-dimensional Chern-Simons gauge theory for the isometry group
of Anti-de-Sitter spacetime,
$\operatorname{AdS}_{4+1}\simeq\operatorname{SO}(4,2)$, and invoke different
dimensional reduction schemes in order to relate it to 4-dimensional spin-2
theories. The AdS gauge algebra is isomorphic to a parametr... | [
{
"created": "Tue, 13 Nov 2018 17:54:16 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Dec 2018 13:32:27 GMT",
"version": "v2"
}
] | 2018-12-18 | [
[
"Albornoz",
"N. L. González",
""
],
[
"Lust",
"Dieter",
""
],
[
"Salgado",
"S.",
""
],
[
"Schmidt-May",
"Angnis",
""
]
] | We consider a 5-dimensional Chern-Simons gauge theory for the isometry group of Anti-de-Sitter spacetime, $\operatorname{AdS}_{4+1}\simeq\operatorname{SO}(4,2)$, and invoke different dimensional reduction schemes in order to relate it to 4-dimensional spin-2 theories. The AdS gauge algebra is isomorphic to a parametriz... |
1601.04343 | Yorgo Senikoglu | Metin Arik and Yorgo Senikoglu | Cosmological isotropic matter-energy generalizations of Schwarzschild
and Kerr metrics | 12 pages, accepted version for publication in Int.J.Mod.Phys.D | Int. J. Mod. Phys. D 25, No 10 (2016) 1650088 | 10.1142/S0218271816500887 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a time dependent isotropic fluid solution around a Schwarzschild
black hole. We offer the solutions and discuss the effects on the field
equations and the horizon. We derive the energy density, pressure and the
equation of state parameter. In the second part, we generalize the rotating
black hole solution ... | [
{
"created": "Sun, 17 Jan 2016 20:45:20 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Apr 2016 14:42:59 GMT",
"version": "v2"
}
] | 2018-07-26 | [
[
"Arik",
"Metin",
""
],
[
"Senikoglu",
"Yorgo",
""
]
] | We present a time dependent isotropic fluid solution around a Schwarzschild black hole. We offer the solutions and discuss the effects on the field equations and the horizon. We derive the energy density, pressure and the equation of state parameter. In the second part, we generalize the rotating black hole solution to... |
2103.04676 | Zhan-Feng Mai | Jia-Hui Huang, Mu-Zi Zhang, Tian-Tian Cao, Yi-Feng Zou and Zhan-Feng
Mai | Superradiantly stability analysis on dyonic stringly black hole | 9 pages, 3 figures. arXiv admin note: text overlap with
arXiv:1809.07345 | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The black hole superradiance phenomena state that when a scalar wave
perturbation is properly scattering off a charged or rotating black hole, the
energy of the reflected scalar wave may be amplified. If this amplification
process can occur back and forth through certain confining mechanisms, it will
lead to strong i... | [
{
"created": "Mon, 8 Mar 2021 11:34:49 GMT",
"version": "v1"
}
] | 2021-03-09 | [
[
"Huang",
"Jia-Hui",
""
],
[
"Zhang",
"Mu-Zi",
""
],
[
"Cao",
"Tian-Tian",
""
],
[
"Zou",
"Yi-Feng",
""
],
[
"Mai",
"Zhan-Feng",
""
]
] | The black hole superradiance phenomena state that when a scalar wave perturbation is properly scattering off a charged or rotating black hole, the energy of the reflected scalar wave may be amplified. If this amplification process can occur back and forth through certain confining mechanisms, it will lead to strong ins... |
1405.0265 | Panagiota Kanti | Athanasios Bakopoulos and Panagiota Kanti | From GEM to Electromagnetism | 18 pages, Latex2e file, typos corrected, comments and references
added, accepted for publication in General Relativity and Gravitation | null | 10.1007/s10714-014-1742-y | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the first part of the present work, we focus on the theory of
gravitoelectromagnetism (GEM), and we derive the full set of equations and
constraints that the GEM scalar and vector potentials ought to satisfy. We
discuss important aspects of the theory, such as the presence of additional
constraints resulting from ... | [
{
"created": "Thu, 1 May 2014 19:35:27 GMT",
"version": "v1"
},
{
"created": "Sun, 18 May 2014 16:21:10 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Bakopoulos",
"Athanasios",
""
],
[
"Kanti",
"Panagiota",
""
]
] | In the first part of the present work, we focus on the theory of gravitoelectromagnetism (GEM), and we derive the full set of equations and constraints that the GEM scalar and vector potentials ought to satisfy. We discuss important aspects of the theory, such as the presence of additional constraints resulting from th... |
gr-qc/0406050 | Vladimir Khatsymovsky | V.M. Khatsymovsky | Modification of quantum measure in area tensor Regge calculus and
positivity | 10 pages, plain LaTeX | Phys.Lett. B601 (2004) 229-235 | 10.1016/j.physletb.2004.09.039 | null | gr-qc | null | A comparative analysis of the versions of quantum measure in the area tensor
Regge calculus is performed on the simplest configurations of the system. The
quantum measure is constructed in such the way that it reduces to the Feynman
path integral describing canonical quantisation if the continuous limit along
any of ... | [
{
"created": "Fri, 11 Jun 2004 15:39:27 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Khatsymovsky",
"V. M.",
""
]
] | A comparative analysis of the versions of quantum measure in the area tensor Regge calculus is performed on the simplest configurations of the system. The quantum measure is constructed in such the way that it reduces to the Feynman path integral describing canonical quantisation if the continuous limit along any of th... |
0803.4309 | Takashi Tamaki | Takashi Tamaki | Post-Newtonian parameters in the tensor-vector-scalar theory | 8 pages, no figures, to be published in PRD | Phys.Rev.D77:124020,2008 | 10.1103/PhysRevD.77.124020 | null | gr-qc astro-ph hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate post-Newtonian parameters in the tensor-vector-scalar (TeVeS)
theory in a general setting while previous researches have been restricted to
spherically symmetric cases. Based on the assumption that both the physical and
Einstein metrics have Minkowski metric at the zeroth order, we show $\gamma =1$
as ... | [
{
"created": "Sun, 30 Mar 2008 09:16:24 GMT",
"version": "v1"
},
{
"created": "Sun, 18 May 2008 02:48:31 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Tamaki",
"Takashi",
""
]
] | We investigate post-Newtonian parameters in the tensor-vector-scalar (TeVeS) theory in a general setting while previous researches have been restricted to spherically symmetric cases. Based on the assumption that both the physical and Einstein metrics have Minkowski metric at the zeroth order, we show $\gamma =1$ as in... |
gr-qc/0604016 | Aristide Baratin | Aristide Baratin, Laurent Freidel | Hidden Quantum Gravity in 3d Feynman diagrams | 35 pages, 4 figures, some comments added | Class.Quant.Grav.24:1993-2026,2007 | 10.1088/0264-9381/24/8/006 | null | gr-qc hep-th | null | In this work we show that 3d Feynman amplitudes of standard QFT in flat and
homogeneous space can be naturally expressed as expectation values of a
specific topological spin foam model. The main interest of the paper is to set
up a framework which gives a background independent perspective on usual field
theories and... | [
{
"created": "Tue, 4 Apr 2006 20:48:34 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Mar 2007 20:24:20 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Baratin",
"Aristide",
""
],
[
"Freidel",
"Laurent",
""
]
] | In this work we show that 3d Feynman amplitudes of standard QFT in flat and homogeneous space can be naturally expressed as expectation values of a specific topological spin foam model. The main interest of the paper is to set up a framework which gives a background independent perspective on usual field theories and c... |
1807.08049 | Nicolas Yunes | Alexander Saffer and Nicolas Yunes | Angular Momentum Loss for a Binary System in Einstein-{\AE}ther Theory | 9 pages, 2 figures, submitted to PRD | Phys. Rev. D 98, 124015 (2018) | 10.1103/PhysRevD.98.124015 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recent gravitational wave observations provide insight into the extreme
gravity regime of coalescing binaries, where gravity is strong, dynamical and
non-linear. The interpretation of these observations relies on the comparison
of the data to a gravitational wave model, which in turn depends on the orbital
evolut... | [
{
"created": "Fri, 20 Jul 2018 22:57:26 GMT",
"version": "v1"
}
] | 2018-12-19 | [
[
"Saffer",
"Alexander",
""
],
[
"Yunes",
"Nicolas",
""
]
] | The recent gravitational wave observations provide insight into the extreme gravity regime of coalescing binaries, where gravity is strong, dynamical and non-linear. The interpretation of these observations relies on the comparison of the data to a gravitational wave model, which in turn depends on the orbital evolutio... |
1408.0840 | Michael Coughlin | Michael Coughlin, Eric Thrane, Nelson Christensen | Detecting compact binary coalescences with seedless clustering | null | null | 10.1103/PhysRevD.90.083005 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Compact binary coalescences are a promising source of gravitational waves for
second-generation interferometric gravitational-wave detectors. Although
matched filtering is the optimal search method for well-modeled systems,
alternative detection strategies can be used to guard against theoretical
errors (e.g., involv... | [
{
"created": "Tue, 5 Aug 2014 00:01:10 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Coughlin",
"Michael",
""
],
[
"Thrane",
"Eric",
""
],
[
"Christensen",
"Nelson",
""
]
] | Compact binary coalescences are a promising source of gravitational waves for second-generation interferometric gravitational-wave detectors. Although matched filtering is the optimal search method for well-modeled systems, alternative detection strategies can be used to guard against theoretical errors (e.g., involvin... |
gr-qc/0302097 | Friedrich W. Hehl | Alberto A. Garcia, Friedrich W. Hehl, Christian Heinicke, Alfredo
Macias | Exact vacuum solution of a (1+2)-dimensional Poincare gauge theory: BTZ
solution with torsion | 16 pages latex, 1 figure, paper corrected and shortened | Phys.Rev. D67 (2003) 124016 | 10.1103/PhysRevD.67.124016 | null | gr-qc hep-th | null | In (1+2)-dimensional Poincar\'e gauge gravity, we start from a Lagrangian
depending on torsion and curvature which includes additionally {\em
translational} and {\em Lorentzian} Chern-Simons terms. Limiting ourselves to
to a specific subcase, the Mielke-Baekler (MB) model, we derive the
corresponding field equations ... | [
{
"created": "Mon, 24 Feb 2003 16:37:02 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Jun 2003 22:52:43 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Garcia",
"Alberto A.",
""
],
[
"Hehl",
"Friedrich W.",
""
],
[
"Heinicke",
"Christian",
""
],
[
"Macias",
"Alfredo",
""
]
] | In (1+2)-dimensional Poincar\'e gauge gravity, we start from a Lagrangian depending on torsion and curvature which includes additionally {\em translational} and {\em Lorentzian} Chern-Simons terms. Limiting ourselves to to a specific subcase, the Mielke-Baekler (MB) model, we derive the corresponding field equations (o... |
2110.01091 | Hongguang Liu | Muxin Han, Wojciech Kaminski, Hongguang Liu | Finiteness of spinfoam vertex amplitude with timelike polyhedra, and the
full amplitude | 29 pages | null | 10.1103/PhysRevD.105.084034 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work focuses on Conrady-Hnybida's 4-dimensional extended spinfoam model
with timelike polyhedra, while we restrict all faces to be spacelike. Firstly,
we prove the absolute convergence of the vertex amplitude with timelike
polyhedra, when SU(1,1) boundary states are coherent states or the canonical
basis, or the... | [
{
"created": "Sun, 3 Oct 2021 20:17:00 GMT",
"version": "v1"
}
] | 2022-05-04 | [
[
"Han",
"Muxin",
""
],
[
"Kaminski",
"Wojciech",
""
],
[
"Liu",
"Hongguang",
""
]
] | This work focuses on Conrady-Hnybida's 4-dimensional extended spinfoam model with timelike polyhedra, while we restrict all faces to be spacelike. Firstly, we prove the absolute convergence of the vertex amplitude with timelike polyhedra, when SU(1,1) boundary states are coherent states or the canonical basis, or their... |
1610.00244 | Antoine Folacci | Andrei Belokogne, Antoine Folacci and Julien Queva | Stueckelberg massive electromagnetism in de Sitter and anti-de Sitter
spacetimes: Two-point functions and renormalized stress-energy tensors | v2:Typos corrected. Minor changes to match the published version | Phys. Rev. D 94, 105028 (2016) | 10.1103/PhysRevD.94.105028 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | By considering Hadamard vacuum states, we first construct the two-point
functions associated with Stueckelberg massive electromagnetism in de Sitter
and anti-de Sitter spacetimes. Then, from the general formalism developed in
[A. Belokogne and A. Folacci, Phys. Rev. D \textbf{93}, 044063 (2016)], we
obtain an exact a... | [
{
"created": "Sun, 2 Oct 2016 08:45:46 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Nov 2016 15:06:48 GMT",
"version": "v2"
}
] | 2016-12-07 | [
[
"Belokogne",
"Andrei",
""
],
[
"Folacci",
"Antoine",
""
],
[
"Queva",
"Julien",
""
]
] | By considering Hadamard vacuum states, we first construct the two-point functions associated with Stueckelberg massive electromagnetism in de Sitter and anti-de Sitter spacetimes. Then, from the general formalism developed in [A. Belokogne and A. Folacci, Phys. Rev. D \textbf{93}, 044063 (2016)], we obtain an exact ana... |
gr-qc/9607077 | Dominik Schwarz | Dominik J. Schwarz (ETH-Zuerich) | Cosmological Perturbations of Ultrarelativistic Plasmas | talk given at Journees Relativistes '96 (Ascona, Switzerland), 4
pages, LaTeX, two Postscript figures | Helv.Phys.Acta 69:194-197,1996 | null | ETH-TH/96-24 | gr-qc astro-ph | null | Scalar cosmological perturbations of a weakly self-interacting plasma mixed
with a perfect radiation fluid are investigated. Effects of this plasma are
considered through order $\lambda^{3/2}$ of perturbative thermal-field-theory
in the radiation dominated universe. The breakdown of thermal perturbation
theory at vas... | [
{
"created": "Wed, 31 Jul 1996 14:42:14 GMT",
"version": "v1"
}
] | 2011-04-15 | [
[
"Schwarz",
"Dominik J.",
"",
"ETH-Zuerich"
]
] | Scalar cosmological perturbations of a weakly self-interacting plasma mixed with a perfect radiation fluid are investigated. Effects of this plasma are considered through order $\lambda^{3/2}$ of perturbative thermal-field-theory in the radiation dominated universe. The breakdown of thermal perturbation theory at vastl... |
2203.07780 | Noa Zilberman | Noa Zilberman, Marc Casals, Amos Ori and Adrian C. Ottewill | Two-point function of a quantum scalar field in the interior region of a
Kerr black hole | null | null | 10.1103/PhysRevD.106.125011 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Quantum field effects on a classical background spacetime may be obtained
from the semiclassical equations of General Relativity with the expectation
value of the stress-energy tensor of the quantum field as a source. This
expectation value can be calculated from Hadamard's elementary two-point
function, which in pra... | [
{
"created": "Tue, 15 Mar 2022 11:01:49 GMT",
"version": "v1"
}
] | 2023-01-04 | [
[
"Zilberman",
"Noa",
""
],
[
"Casals",
"Marc",
""
],
[
"Ori",
"Amos",
""
],
[
"Ottewill",
"Adrian C.",
""
]
] | Quantum field effects on a classical background spacetime may be obtained from the semiclassical equations of General Relativity with the expectation value of the stress-energy tensor of the quantum field as a source. This expectation value can be calculated from Hadamard's elementary two-point function, which in pract... |
2102.06824 | Alexey Bobrick | Alexey Bobrick, Gianni Martire | Introducing Physical Warp Drives | Accepted in CQG, comments welcome | null | 10.1088/1361-6382/abdf6e | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Alcubierre warp drive is an exotic solution in general relativity. It
allows for superluminal travel at the cost of enormous amounts of matter with
negative mass density. For this reason, the Alcubierre warp drive has been
widely considered unphysical. In this study, we develop a model of a general
warp drive spa... | [
{
"created": "Fri, 12 Feb 2021 23:58:39 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Feb 2021 13:48:39 GMT",
"version": "v2"
}
] | 2021-02-18 | [
[
"Bobrick",
"Alexey",
""
],
[
"Martire",
"Gianni",
""
]
] | The Alcubierre warp drive is an exotic solution in general relativity. It allows for superluminal travel at the cost of enormous amounts of matter with negative mass density. For this reason, the Alcubierre warp drive has been widely considered unphysical. In this study, we develop a model of a general warp drive space... |
1802.01543 | Ilya Vilensky | Jonathan Engle, Ilya Vilensky | Deriving loop quantum cosmology dynamics from diffeomorphism invariance | 34 pages, improved presentation by imposing covariance under
non-canonical diffeomorphisms | Phys. Rev. D 98, 023505 (2018) | 10.1103/PhysRevD.98.023505 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the requirement of diffeomorphism invariance in the Bianchi I context
to derive the form of the quantum Hamiltonian constraint. After imposing the
correct classical behavior and making a certain minimality assumption, together
with a certain restriction to "planar loops", we then obtain a unique
expression for... | [
{
"created": "Mon, 5 Feb 2018 18:10:22 GMT",
"version": "v1"
},
{
"created": "Sat, 26 May 2018 01:50:37 GMT",
"version": "v2"
}
] | 2018-07-11 | [
[
"Engle",
"Jonathan",
""
],
[
"Vilensky",
"Ilya",
""
]
] | We use the requirement of diffeomorphism invariance in the Bianchi I context to derive the form of the quantum Hamiltonian constraint. After imposing the correct classical behavior and making a certain minimality assumption, together with a certain restriction to "planar loops", we then obtain a unique expression for t... |
2012.11959 | Viktor Gakis | Gianbattista-Piero Nicosia, Jackson Levi Said and Viktor Gakis | Generalised Proca Theories in Teleparallel Gravity | 19 pages | The European Physical Journal Plus volume 136 (2021) | 10.1140/epjp/s13360-021-01133-4 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Generalised Proca theories of gravity represent an interesting class of
vector-tensor theories where only three propagating degrees of freedom are
present. In this work, we propose a new teleparallel gravity analog to Proca
theories where the generalised Proca framework is extended due to the lower
order nature of to... | [
{
"created": "Tue, 22 Dec 2020 12:24:47 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Mar 2022 15:38:08 GMT",
"version": "v2"
}
] | 2022-03-25 | [
[
"Nicosia",
"Gianbattista-Piero",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Gakis",
"Viktor",
""
]
] | Generalised Proca theories of gravity represent an interesting class of vector-tensor theories where only three propagating degrees of freedom are present. In this work, we propose a new teleparallel gravity analog to Proca theories where the generalised Proca framework is extended due to the lower order nature of tors... |
2306.11926 | Israel Quiros | Israel Quiros | Comment on "Dark matter as a Weyl geometric effect" | 3 pages without figures. Improved and shortened version, focused
exclusively in the demonstration that the solution found by the authors of
the PRD paper is wrong | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this note we comment on a recent attempt by P. Burikham, T. Harko, K.
Pimsamarn and S. Shahidi [Phys. Rev. D {\bf 107}, 064008 (2023)] to explain the
galactic rotation curves as the result of the motion of time-like test
particles in the Weyl geometric theory of gravity. We show that the static,
spherically symmet... | [
{
"created": "Tue, 20 Jun 2023 22:23:43 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Aug 2023 07:28:51 GMT",
"version": "v2"
},
{
"created": "Tue, 15 Aug 2023 15:52:36 GMT",
"version": "v3"
}
] | 2023-08-16 | [
[
"Quiros",
"Israel",
""
]
] | In this note we comment on a recent attempt by P. Burikham, T. Harko, K. Pimsamarn and S. Shahidi [Phys. Rev. D {\bf 107}, 064008 (2023)] to explain the galactic rotation curves as the result of the motion of time-like test particles in the Weyl geometric theory of gravity. We show that the static, spherically symmetri... |
gr-qc/0604084 | James Vickers | R. A. d'Inverno, P. Lambert, J. A. Vickers | Hamiltonian analysis of the double null 2+2 decomposition of General
Relativity expressed in terms of self-dual bivectors | 12 pages, LaTeX, uses iopart.cls, submitted to Class. Quantum Grav | Class.Quant.Grav. 23 (2006) 4511-4522 | 10.1088/0264-9381/23/13/014 | null | gr-qc | null | In this paper we obtain a 2+2 double null Hamiltonian description of General
Relativity using only the (complex) SO(3) connection and the components of the
complex densitised self-dual bivectors. We carry out the general canonical
analysis of this system and obtain the first class constraint algebra entirely
in terms... | [
{
"created": "Thu, 20 Apr 2006 08:33:23 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"d'Inverno",
"R. A.",
""
],
[
"Lambert",
"P.",
""
],
[
"Vickers",
"J. A.",
""
]
] | In this paper we obtain a 2+2 double null Hamiltonian description of General Relativity using only the (complex) SO(3) connection and the components of the complex densitised self-dual bivectors. We carry out the general canonical analysis of this system and obtain the first class constraint algebra entirely in terms o... |
1211.6022 | Jose M. M. Senovilla | Jos\'e M. M. Senovilla | Remarks on the stability operator for MOTS | 4 pages, no figures, contribution to the Proceedings of the Spanish
Relativity Meeting in Portugal ERE2012, held in Guimar\~aes, 3--7 Septmber
2012 | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Small deformations of marginally outer trapped surfaces (MOTS) are studied by
using the stability operator introduced by Andersson-Mars-Simon. Novel formulae
for the principal eigenvalue are presented. A characterization of the many
marginally outer trapped tubes (MOTT) passing through a given MOTS is given,
and the ... | [
{
"created": "Mon, 26 Nov 2012 16:52:09 GMT",
"version": "v1"
}
] | 2012-11-27 | [
[
"Senovilla",
"José M. M.",
""
]
] | Small deformations of marginally outer trapped surfaces (MOTS) are studied by using the stability operator introduced by Andersson-Mars-Simon. Novel formulae for the principal eigenvalue are presented. A characterization of the many marginally outer trapped tubes (MOTT) passing through a given MOTS is given, and the po... |
1803.01624 | Jorma Louko | Robert Benkel, Jishnu Bhattacharyya, Jorma Louko, David Mattingly,
Thomas P. Sotiriou | Dynamical obstruction to perpetual motion from Lorentz-violating black
holes | 10 pages. v2: minor additions to discussion, version accepted in PRD | Phys. Rev. D 98, 024034 (2018) | 10.1103/PhysRevD.98.024034 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black holes in Lorentz-violating theories have been claimed to violate the
second law of thermodynamics by perpetual motion energy extraction. We revisit
this question for a Penrose splitting process in a spherically symmetric
setting with two species of particles that move on radial geodesics that extend
to infinity... | [
{
"created": "Mon, 5 Mar 2018 12:18:00 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jul 2018 17:26:25 GMT",
"version": "v2"
}
] | 2018-07-25 | [
[
"Benkel",
"Robert",
""
],
[
"Bhattacharyya",
"Jishnu",
""
],
[
"Louko",
"Jorma",
""
],
[
"Mattingly",
"David",
""
],
[
"Sotiriou",
"Thomas P.",
""
]
] | Black holes in Lorentz-violating theories have been claimed to violate the second law of thermodynamics by perpetual motion energy extraction. We revisit this question for a Penrose splitting process in a spherically symmetric setting with two species of particles that move on radial geodesics that extend to infinity. ... |
2404.15408 | Rossella Gamba | Rossella Gamba, Danilo Chiaramello and Sayan Neogi | Towards efficient Effective One Body models for generic, non-planar
orbits | 17 pages, 13 figures; version accepted for publication | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Complete waveform models able to account for arbitrary non-planar orbits
represent a holy grail in current gravitational-wave astronomy. Here, we take a
step towards this direction and present a simple yet efficient prescription to
obtain the evolution of the spin vectors and of the orbital angular momentum
along non... | [
{
"created": "Tue, 23 Apr 2024 18:00:22 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Jun 2024 10:50:55 GMT",
"version": "v2"
}
] | 2024-06-27 | [
[
"Gamba",
"Rossella",
""
],
[
"Chiaramello",
"Danilo",
""
],
[
"Neogi",
"Sayan",
""
]
] | Complete waveform models able to account for arbitrary non-planar orbits represent a holy grail in current gravitational-wave astronomy. Here, we take a step towards this direction and present a simple yet efficient prescription to obtain the evolution of the spin vectors and of the orbital angular momentum along non-c... |
2206.01389 | Erik Jim\'enez-V\'azquez | Erik Jimenez-Vazquez, Miguel Alcubierre | Critical gravitational collapse of a massive complex scalar field | null | null | 10.1103/PhysRevD.106.044071 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the critical collapse of a massive complex scalar field coupled
minimally to gravity. Taking as initial data a simple gaussian pulse with a
shape similar to the harmonic ansatz for boson stars, we obtain critical
collapse of type type I and II when varying the gaussian width $\sigma$. For
$\sigma \leq 0.5$ w... | [
{
"created": "Fri, 3 Jun 2022 04:26:57 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Aug 2022 18:34:56 GMT",
"version": "v2"
}
] | 2022-09-07 | [
[
"Jimenez-Vazquez",
"Erik",
""
],
[
"Alcubierre",
"Miguel",
""
]
] | We study the critical collapse of a massive complex scalar field coupled minimally to gravity. Taking as initial data a simple gaussian pulse with a shape similar to the harmonic ansatz for boson stars, we obtain critical collapse of type type I and II when varying the gaussian width $\sigma$. For $\sigma \leq 0.5$ we ... |
2308.10184 | Xiangdong Zhang | Xiangdong Zhang | Loop quantum black hole | A mini review, 15 pages | Universe 2023, 9(7), 313 | 10.3390/universe9070313 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the last decades, progress on the quantization of black holes using
techniques developed in loop quantum cosmology has received increasing
attention. Due to the quantum geometry effect, the resulting quantum corrected
black hole is free of singularity. The quantization scheme can be roughly
divided into four types... | [
{
"created": "Sun, 20 Aug 2023 07:24:15 GMT",
"version": "v1"
}
] | 2023-08-22 | [
[
"Zhang",
"Xiangdong",
""
]
] | In the last decades, progress on the quantization of black holes using techniques developed in loop quantum cosmology has received increasing attention. Due to the quantum geometry effect, the resulting quantum corrected black hole is free of singularity. The quantization scheme can be roughly divided into four types, ... |
gr-qc/9404059 | Jorge Pullin | Rodolfo Gambini, Alcides Garat and Jorge Pullin | The constraint algebra of quantum gravity in the loop representation | 18 pages, Revtex, no figures, CGPG-94/4-3 | Int.J.Mod.Phys. D4 (1995) 589-616 | 10.1142/S0218271895000417 | null | gr-qc | null | We study the algebra of constraints of quantum gravity in the loop
representation based on Ashtekar's new variables. We show by direct computation
that the quantum commutator algebra reproduces the classical Poisson bracket
one, in the limit in which regulators are removed. The calculation illustrates
the use of seve... | [
{
"created": "Thu, 28 Apr 1994 16:05:58 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Gambini",
"Rodolfo",
""
],
[
"Garat",
"Alcides",
""
],
[
"Pullin",
"Jorge",
""
]
] | We study the algebra of constraints of quantum gravity in the loop representation based on Ashtekar's new variables. We show by direct computation that the quantum commutator algebra reproduces the classical Poisson bracket one, in the limit in which regulators are removed. The calculation illustrates the use of severa... |
gr-qc/0308031 | Patricio S. Letelier | Daniel Vogt and Patricio S. Letelier | Exact General Relativistic Perfect Fluid Disks with Halos | 22 pages, 25 eps.figs, RevTex. Phys. Rev. D to appear | Phys.Rev. D68 (2003) 084010 | 10.1103/PhysRevD.68.084010 | null | gr-qc astro-ph | null | Using the well-known ``displace, cut and reflect'' method used to generate
disks from given solutions of Einstein field equations, we construct static
disks made of perfect fluid based on vacuum Schwarzschild's solution in
isotropic coordinates. The same method is applied to different exactsolutions
to the Einstein's... | [
{
"created": "Mon, 11 Aug 2003 14:21:37 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Vogt",
"Daniel",
""
],
[
"Letelier",
"Patricio S.",
""
]
] | Using the well-known ``displace, cut and reflect'' method used to generate disks from given solutions of Einstein field equations, we construct static disks made of perfect fluid based on vacuum Schwarzschild's solution in isotropic coordinates. The same method is applied to different exactsolutions to the Einstein'seq... |
gr-qc/0609071 | Yun-Song Piao | Yun-Song Piao | Seeding of Primordial Perturbations During a Decelerated Expansion | 5 pages, 3 figures, more details and clarifications added, refs.
added, new version with 6 pages has been splitted into various sections, to
be published in PRD, v3, matched to published version | Phys.Rev.D75:063517,2007 | 10.1103/PhysRevD.75.063517 | null | gr-qc | null | A scalar field with a modified dispersion relation may seed, under certain
conditions, the primordial perturbations during a decelerated expansion. In
this note we examine whether and how these perturbations can be responsible for
the structure formation of observable universe. We discuss relevant
difficulties and po... | [
{
"created": "Tue, 19 Sep 2006 10:38:44 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Mar 2007 05:11:46 GMT",
"version": "v2"
},
{
"created": "Wed, 9 May 2007 06:35:59 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Piao",
"Yun-Song",
""
]
] | A scalar field with a modified dispersion relation may seed, under certain conditions, the primordial perturbations during a decelerated expansion. In this note we examine whether and how these perturbations can be responsible for the structure formation of observable universe. We discuss relevant difficulties and poss... |
1710.01357 | Sk Jahanur Hoque | Sk Jahanur Hoque and Ankit Aggarwal | Quadrupolar power radiation by a binary system in de Sitter Background | Version accepted for publication in IJMPD. Angular momentum loss and
evolution of orbital parameters are added. 24 pages, 2 figures | International Journal of Modern Physics D Vol. 28 (2019) 1950025 | 10.1142/S0218271819500251 | IMSc/2017/10/08 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cosmological observations over past couple of decades favor our universe with
a tiny positive cosmological constant. Presence of cosmological constant not
only imposes theoretical challenges in gravitational wave physics, it has also
observational relevance. Inclusion of cosmological constant in linearized
theory of ... | [
{
"created": "Tue, 3 Oct 2017 19:33:19 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Oct 2018 16:52:09 GMT",
"version": "v2"
}
] | 2018-10-24 | [
[
"Hoque",
"Sk Jahanur",
""
],
[
"Aggarwal",
"Ankit",
""
]
] | Cosmological observations over past couple of decades favor our universe with a tiny positive cosmological constant. Presence of cosmological constant not only imposes theoretical challenges in gravitational wave physics, it has also observational relevance. Inclusion of cosmological constant in linearized theory of gr... |
gr-qc/9809066 | Jerzy Kowalczynski | J.K. Kowalczynski (Instute of Physics, Polish Academy of Sciences) | An Unexpected Electrovac Solution with the Negative Cosmological
Constant | 8 pages, LaTeX 2e, no figures. The present (second) version is
derived from the first one by adding two references (here Refs. [15,16]) and
comments on the Bertotti solution and on its special cases. I made no
submission for publication when it appeared that the solution in question is
a special case of the Ber... | null | null | null | gr-qc | null | An exact solution of the current-free Einstein-Maxwell equations with the
cosmological constant is presented. The solution is of Petrov type D, includes
the negative cosmological constant, and could be a ``background addition'' to
the present-day models of the universe. It has a surprising property such that
its elec... | [
{
"created": "Wed, 23 Sep 1998 16:08:04 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Nov 2000 14:30:29 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Kowalczynski",
"J. K.",
"",
"Instute of Physics, Polish Academy of Sciences"
]
] | An exact solution of the current-free Einstein-Maxwell equations with the cosmological constant is presented. The solution is of Petrov type D, includes the negative cosmological constant, and could be a ``background addition'' to the present-day models of the universe. It has a surprising property such that its electr... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.