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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1807.08896 | Luca Buoninfante | Luca Buoninfante, Alan S. Cornell, Gerhard Harmsen, Alexey S.
Koshelev, Gaetano Lambiase, Jo\~ao Marto, Anupam Mazumdar | Towards nonsingular rotating compact object in ghost-free infinite
derivative gravity | 11 pages, 2 figures. Version accepted for publication in PRD | Phys. Rev. D 98, 084041 (2018) | 10.1103/PhysRevD.98.084041 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The vacuum solution of Einstein's theory of general relativity provides a
rotating metric with a ring singularity, which is covered by the inner and
outer horizons, and an ergo region. In this paper, we will discuss how
ghost-free, quadratic curvature, Infinite Derivative Gravity (IDG) may resolve
the ring singularit... | [
{
"created": "Tue, 24 Jul 2018 04:00:29 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Nov 2018 12:45:25 GMT",
"version": "v2"
}
] | 2018-11-28 | [
[
"Buoninfante",
"Luca",
""
],
[
"Cornell",
"Alan S.",
""
],
[
"Harmsen",
"Gerhard",
""
],
[
"Koshelev",
"Alexey S.",
""
],
[
"Lambiase",
"Gaetano",
""
],
[
"Marto",
"João",
""
],
[
"Mazumdar",
"Anupam",
""
... | The vacuum solution of Einstein's theory of general relativity provides a rotating metric with a ring singularity, which is covered by the inner and outer horizons, and an ergo region. In this paper, we will discuss how ghost-free, quadratic curvature, Infinite Derivative Gravity (IDG) may resolve the ring singularity.... |
0710.4992 | Alexei Zayats | A. B. Balakin, H. Dehnen, A. E. Zayats | Nonminimal isotropic cosmological model with Yang-Mills and Higgs fields | 15 pages, revised version accepted to Int. J. Mod. Phys. D, typos
corrected | Int.J.Mod.Phys.D17:1255-1269,2008 | 10.1142/S0218271808012802 | null | gr-qc astro-ph hep-th | null | We establish a nonminimal Einstein-Yang-Mills-Higgs model, which contains six
coupling parameters. First three parameters relate to the nonminimal coupling
of non-Abelian gauge field and gravity field, two parameters describe the
so-called derivative nonminimal coupling of scalar multiplet with gravity
field, and the... | [
{
"created": "Fri, 26 Oct 2007 05:44:24 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Nov 2007 10:54:49 GMT",
"version": "v2"
}
] | 2008-11-07 | [
[
"Balakin",
"A. B.",
""
],
[
"Dehnen",
"H.",
""
],
[
"Zayats",
"A. E.",
""
]
] | We establish a nonminimal Einstein-Yang-Mills-Higgs model, which contains six coupling parameters. First three parameters relate to the nonminimal coupling of non-Abelian gauge field and gravity field, two parameters describe the so-called derivative nonminimal coupling of scalar multiplet with gravity field, and the s... |
1805.04056 | Shuang Nan Zhang | Sheng-Xian Zhao, Shuang-Nan Zhang | Exact solutions for spherically gravitational collapse around a black
hole: the effect of tangential pressure | 14 pages, 4 figures, accepted for publication in Chinese Physics C | Chinese Physics C, Volume 42, Issue 8, article id. 085101 (2018) | 10.1088/1674-1137/42/8/085101 | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spherically gravitational collapse towards a black hole with non-zero
tangential pressure is studied. Exact solutions corresponding to different
equations of state are given. We find that when taking the tangential pressure
into account, the exact solutions have three qualitatively different endings.
For positive tan... | [
{
"created": "Thu, 10 May 2018 16:45:30 GMT",
"version": "v1"
}
] | 2020-03-17 | [
[
"Zhao",
"Sheng-Xian",
""
],
[
"Zhang",
"Shuang-Nan",
""
]
] | Spherically gravitational collapse towards a black hole with non-zero tangential pressure is studied. Exact solutions corresponding to different equations of state are given. We find that when taking the tangential pressure into account, the exact solutions have three qualitatively different endings. For positive tange... |
1202.6311 | T. Damour | Thibault Damour | Theoretical Aspects of the Equivalence Principle | 21 pages, no figures; submitted to a "focus issue" of Classical and
Quantum Gravity on Tests of the Weak Equivalence Principle, organized by
Clive Speake and Clifford Will | null | 10.1088/0264-9381/29/18/184001 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review several theoretical aspects of the Equivalence Principle (EP). We
emphasize the unsatisfactory fact that the EP maintains the absolute character
of the coupling constants of physics while General Relativity, and its
generalizations (Kaluza-Klein,..., String Theory), suggest that all absolute
structures shou... | [
{
"created": "Tue, 28 Feb 2012 18:12:16 GMT",
"version": "v1"
}
] | 2015-06-04 | [
[
"Damour",
"Thibault",
""
]
] | We review several theoretical aspects of the Equivalence Principle (EP). We emphasize the unsatisfactory fact that the EP maintains the absolute character of the coupling constants of physics while General Relativity, and its generalizations (Kaluza-Klein,..., String Theory), suggest that all absolute structures should... |
2112.11309 | Vladimir Kassandrov | Ahmed Alharthy and Vladimir V. Kassandrov | On a Crucial Role of Gravity in the Formation of Elementary Particles | 17 pages, 9 figures | Universe 2020, 6(11), 193 | 10.3390/universe6110193 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider the model of minimally interacting electromagnetic, gravitational
and massive scalar fields free of any additional nonlinearities. In the
dimensionless form, the Lagranginan contains only one parameter \gamma =
Gm^2/e^2 which corresponds to the ratio of gravitational and electromagnetic
interactions and, ... | [
{
"created": "Tue, 21 Dec 2021 15:57:44 GMT",
"version": "v1"
}
] | 2021-12-22 | [
[
"Alharthy",
"Ahmed",
""
],
[
"Kassandrov",
"Vladimir V.",
""
]
] | We consider the model of minimally interacting electromagnetic, gravitational and massive scalar fields free of any additional nonlinearities. In the dimensionless form, the Lagranginan contains only one parameter \gamma = Gm^2/e^2 which corresponds to the ratio of gravitational and electromagnetic interactions and, fo... |
2311.08616 | Erick Ivan Duque Gonzalez | Erick I. Duque | Emergent modified gravity: The perfect fluid and gravitational collapse | 49 pages, 7 figures; added references, typos corrected | null | 10.1103/PhysRevD.109.044014 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Emergent modified gravity is a canonical theory based on general covariance
where the spacetime is not fundamental, but rather an emergent object. This
feature allows for modifications of the classical theory and can be used to
model new effects, such as those suggested by quantum gravity. We discuss how
matter field... | [
{
"created": "Wed, 15 Nov 2023 00:46:44 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Jan 2024 19:06:50 GMT",
"version": "v2"
}
] | 2024-02-06 | [
[
"Duque",
"Erick I.",
""
]
] | Emergent modified gravity is a canonical theory based on general covariance where the spacetime is not fundamental, but rather an emergent object. This feature allows for modifications of the classical theory and can be used to model new effects, such as those suggested by quantum gravity. We discuss how matter fields ... |
2208.03572 | Donato Bini | Donato Bini, Stuart Kauffman, Sauro Succi, Pablo G. Tello | First Post-Minkowskian approach to turbulent gravity | 11 pages; 5 figures | null | 10.1103/PhysRevD.106.104007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the metric fluctuations induced by a turbulent energy-matter
tensor within the first order Post-Minkowskian approximation. It is found that
the turbulent energy cascade can in principle interfere with the process of
black hole formation, leading to a potentially strong coupling between these
two highly non... | [
{
"created": "Sat, 6 Aug 2022 19:56:43 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Sep 2022 09:18:15 GMT",
"version": "v2"
}
] | 2022-11-16 | [
[
"Bini",
"Donato",
""
],
[
"Kauffman",
"Stuart",
""
],
[
"Succi",
"Sauro",
""
],
[
"Tello",
"Pablo G.",
""
]
] | We compute the metric fluctuations induced by a turbulent energy-matter tensor within the first order Post-Minkowskian approximation. It is found that the turbulent energy cascade can in principle interfere with the process of black hole formation, leading to a potentially strong coupling between these two highly nonli... |
2012.03342 | Juan M. Z\'arate Pretel | Juan M. Z. Pretel, Sergio E. Jor\'as, Ribamar R. R. Reis and Jos\'e D.
V. Arba\~nil | Radial oscillations and stability of compact stars in $f(R, T) = R+
2\beta T$ gravity | Accepted for publication in JCAP; 18 pages, 6 figures and new
references added | JCAP 04 (2021) 064 | 10.1088/1475-7516/2021/04/064 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the static structure configurations and radial stability of
compact stars within the context of $f(R, T)$ gravity, with $R$ and $T$
standing for the Ricci scalar and trace of the energy-momentum tensor,
respectively. Considering the $f(R, T)=R+2\beta T$ functional form, with
$\beta$ being a constant, we de... | [
{
"created": "Sun, 6 Dec 2020 17:59:27 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Mar 2021 19:42:58 GMT",
"version": "v2"
}
] | 2021-04-26 | [
[
"Pretel",
"Juan M. Z.",
""
],
[
"Jorás",
"Sergio E.",
""
],
[
"Reis",
"Ribamar R. R.",
""
],
[
"Arbañil",
"José D. V.",
""
]
] | We examine the static structure configurations and radial stability of compact stars within the context of $f(R, T)$ gravity, with $R$ and $T$ standing for the Ricci scalar and trace of the energy-momentum tensor, respectively. Considering the $f(R, T)=R+2\beta T$ functional form, with $\beta$ being a constant, we deri... |
2202.09794 | Subhajit Saha | Subhajit Saha, Abdulla Al Mamon, Somnath Saha | Evolution of primordial black holes in an adiabatic FLRW universe with
gravitational particle creation | 10 pages, 1 figure, 3 tables, Revised as per suggestions of the
reviewer | General Relativity and Gravitation 54, 122 (2022) | 10.1007/s10714-022-03010-6 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the evolution of primordial black holes (PBHs) in an adiabatic FLRW
universe with dissipation due to bulk viscosity which is considered to be in
the form of gravitational particle creation. Assuming that the process of
evaporation is quite suppressed during the radiation era, we obtain an analytic
solution f... | [
{
"created": "Sun, 20 Feb 2022 11:31:50 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Oct 2022 16:33:16 GMT",
"version": "v2"
}
] | 2022-10-18 | [
[
"Saha",
"Subhajit",
""
],
[
"Mamon",
"Abdulla Al",
""
],
[
"Saha",
"Somnath",
""
]
] | We study the evolution of primordial black holes (PBHs) in an adiabatic FLRW universe with dissipation due to bulk viscosity which is considered to be in the form of gravitational particle creation. Assuming that the process of evaporation is quite suppressed during the radiation era, we obtain an analytic solution for... |
2105.11261 | Julio Arrechea | Julio Arrechea, Carlos Barcel\'o, Ra\'ul Carballo-Rubio, Luis J. Garay | Semiclassical constant-density spheres in a regularized Polyakov
approximation | 35 pages, 20 figures. There is a new figure containing numerical
integrations for every solution in the catalogue. We included a Mathematica
notebook to reproduce such plots. A typo in Eq. (59) has been fixed.
References added | null | 10.1103/PhysRevD.104.084071 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide an exhaustive analysis of the complete set of solutions of the
equations of stellar equilibrium under semiclassical effects. As classical
matter we use a perfect fluid of constant density; as the semiclassical source
we use the renormalized stress-energy tensor (RSET) of a minimally coupled
massless scalar... | [
{
"created": "Mon, 24 May 2021 13:28:13 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Oct 2021 10:18:57 GMT",
"version": "v2"
}
] | 2021-10-22 | [
[
"Arrechea",
"Julio",
""
],
[
"Barceló",
"Carlos",
""
],
[
"Carballo-Rubio",
"Raúl",
""
],
[
"Garay",
"Luis J.",
""
]
] | We provide an exhaustive analysis of the complete set of solutions of the equations of stellar equilibrium under semiclassical effects. As classical matter we use a perfect fluid of constant density; as the semiclassical source we use the renormalized stress-energy tensor (RSET) of a minimally coupled massless scalar f... |
1705.11015 | H\'el\`ene Pihan-Le Bars | H. Pihan-Le Bars, C. Guerlin and P. Wolf | Progress on testing Lorentz symmetry with MICROSCOPE | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Weak Equivalence Principle (WEP) and the local Lorentz invariance (LLI)
are two major assumptions of General Relativity (GR). The MICROSCOPE mission,
currently operating, will perform a test of the WEP with a precision of
$10^{-15}$. The data will also be analysed at SYRTE for the purposes of a LLI
test realised ... | [
{
"created": "Wed, 31 May 2017 10:14:48 GMT",
"version": "v1"
}
] | 2017-06-01 | [
[
"Bars",
"H. Pihan-Le",
""
],
[
"Guerlin",
"C.",
""
],
[
"Wolf",
"P.",
""
]
] | The Weak Equivalence Principle (WEP) and the local Lorentz invariance (LLI) are two major assumptions of General Relativity (GR). The MICROSCOPE mission, currently operating, will perform a test of the WEP with a precision of $10^{-15}$. The data will also be analysed at SYRTE for the purposes of a LLI test realised in... |
1502.03071 | Hor\'acio Santana Vieira | H. S. Vieira, V. B. Bezerra | Quantum Newtonian cosmology and the biconfluent Heun functions | 15 pages, 2 figures | J. Math. Phys. 56, 092501 (2015) | 10.1063/1.4930871 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain the exact solution of the Schr\"odinger equation for a particle
(galaxy) moving in a Newtonian universe with a cosmological constant, which is
given in terms of the biconfluent Heun functions. The first six Heun
polynomials of the biconfluent function are written explicitly. The energy
spectrum which resemb... | [
{
"created": "Tue, 10 Feb 2015 20:23:57 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Sep 2015 14:00:57 GMT",
"version": "v2"
}
] | 2015-09-16 | [
[
"Vieira",
"H. S.",
""
],
[
"Bezerra",
"V. B.",
""
]
] | We obtain the exact solution of the Schr\"odinger equation for a particle (galaxy) moving in a Newtonian universe with a cosmological constant, which is given in terms of the biconfluent Heun functions. The first six Heun polynomials of the biconfluent function are written explicitly. The energy spectrum which resemble... |
0909.0010 | Eiichi Hirose | Eiichi Hirose, Keita Kawabe, Daniel Sigg, Rana Adhikari, and Peter R.
Saulson | Angular instability due to radiation pressure in the LIGO gravitational
wave detector | Submitted to Applied Optics | null | 10.1364/AO.49.003474 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We observed the effect of radiation pressure on the angular sensing and
control system of the Laser Interferometer Gravitational-Wave Observatory
(LIGO) interferometer's core optics at LIGO Hanford Observatory. This is the
first measurement of this effect in a complete gravitational wave
interferometer. Only one of t... | [
{
"created": "Mon, 31 Aug 2009 20:01:46 GMT",
"version": "v1"
}
] | 2015-05-14 | [
[
"Hirose",
"Eiichi",
""
],
[
"Kawabe",
"Keita",
""
],
[
"Sigg",
"Daniel",
""
],
[
"Adhikari",
"Rana",
""
],
[
"Saulson",
"Peter R.",
""
]
] | We observed the effect of radiation pressure on the angular sensing and control system of the Laser Interferometer Gravitational-Wave Observatory (LIGO) interferometer's core optics at LIGO Hanford Observatory. This is the first measurement of this effect in a complete gravitational wave interferometer. Only one of the... |
0810.4529 | Lee Samuel Finn | Lee Samuel Finn | The response of interferometric gravitational wave detectors | 10 pages, one figure, as accepted to PRD | Phys.Rev.D79:022002,2009 | 10.1103/PhysRevD.79.022002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The derivation of the response function of an interferometric gravitational
wave detector is a paradigmatic calculation in the field of gravitational wave
detection. Surprisingly, the standard derivation of the response wave detectors
makes several unjustifiable assumptions, both conceptual and quantitative,
regardin... | [
{
"created": "Fri, 24 Oct 2008 19:12:32 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Jan 2009 17:37:26 GMT",
"version": "v2"
}
] | 2010-04-21 | [
[
"Finn",
"Lee Samuel",
""
]
] | The derivation of the response function of an interferometric gravitational wave detector is a paradigmatic calculation in the field of gravitational wave detection. Surprisingly, the standard derivation of the response wave detectors makes several unjustifiable assumptions, both conceptual and quantitative, regarding ... |
2301.03004 | Yan-Gang Miao | Yang Guo, Hao Xie, Yan-Gang Miao | Joule-Thomson effect of AdS black holes in conformal gravity | v1: 10 pages, 4 figures; v2: 11 pages, clarifications and references
added, final version to appear in Nuclear Physics B | Nucl. Phys. B 993 (2023) 116280 (10 pages) | 10.1016/j.nuclphysb.2023.116280 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the Joule-Thomson effect of AdS black holes in conformal
gravity. We derive the Joule-Thomson coefficient in terms of thermodynamic
relations and then make an alternative derivation via a direct way. We analyze
the Joule-Thomson coefficient and find that the Joule-Thomson coefficients
obtained from two... | [
{
"created": "Sun, 8 Jan 2023 09:17:51 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Jun 2023 00:25:53 GMT",
"version": "v2"
}
] | 2023-06-28 | [
[
"Guo",
"Yang",
""
],
[
"Xie",
"Hao",
""
],
[
"Miao",
"Yan-Gang",
""
]
] | We investigate the Joule-Thomson effect of AdS black holes in conformal gravity. We derive the Joule-Thomson coefficient in terms of thermodynamic relations and then make an alternative derivation via a direct way. We analyze the Joule-Thomson coefficient and find that the Joule-Thomson coefficients obtained from two d... |
1205.5311 | Roman Konoplya | R. A. Konoplya, Yu-Chun Liu | Motion of charged particles and quasinormal modes around the
magnetically and tidally deformed black hole | 15 pages, RevTex, improved style, minor changes | Phys.Rev. D86 (2012) 084007 | 10.1103/PhysRevD.86.084007 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Here we consider two phenomena in the vicinity of a black hole deformed by
the tidal gravitational force of surrounding matter and by a strong magnetic
field: equatorial motion of charged particles and the decay of a test scalar
field. We were able to analyze both phenomena with analytical and simple
numerical tools,... | [
{
"created": "Thu, 24 May 2012 00:22:44 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Jul 2012 22:15:55 GMT",
"version": "v2"
},
{
"created": "Wed, 8 Aug 2012 20:29:59 GMT",
"version": "v3"
}
] | 2015-03-20 | [
[
"Konoplya",
"R. A.",
""
],
[
"Liu",
"Yu-Chun",
""
]
] | Here we consider two phenomena in the vicinity of a black hole deformed by the tidal gravitational force of surrounding matter and by a strong magnetic field: equatorial motion of charged particles and the decay of a test scalar field. We were able to analyze both phenomena with analytical and simple numerical tools, w... |
gr-qc/9911073 | M. Meyer | S. Deser | Infinities in Quantum Gravities | 8 pages. Plenary lecture at Journees Relativistes 1999 | AnnalenPhys.9:299-307,2000 | 10.1002/(SICI)1521-3889(200005)9:3/5<299::AID-ANDP299>3.0.CO;2-E | BRX TH-464 | gr-qc hep-th | null | We first present a review, intended for classical relativists, of the
ultraviolet difficulties faced by local quantum gravity theories in both the
usual Einstein versions and in their supergravity extensions, at least
perturbatively. These problems, present in arbitrary dimensions, are traceable
to the dimensionality... | [
{
"created": "Fri, 19 Nov 1999 15:43:13 GMT",
"version": "v1"
}
] | 2017-09-27 | [
[
"Deser",
"S.",
""
]
] | We first present a review, intended for classical relativists, of the ultraviolet difficulties faced by local quantum gravity theories in both the usual Einstein versions and in their supergravity extensions, at least perturbatively. These problems, present in arbitrary dimensions, are traceable to the dimensionality o... |
1905.09300 | Vijay Varma | Vijay Varma, Scott E. Field, Mark A. Scheel, Jonathan Blackman, Davide
Gerosa, Leo C. Stein, Lawrence E. Kidder, and Harald P. Pfeiffer | Surrogate models for precessing binary black hole simulations with
unequal masses | Matches published version. Models publicly available at
https://zenodo.org/record/3455886#.XZ9s1-dKjBI and
https://pypi.org/project/surfinBH | Phys. Rev. Research 1, 033015 (2019) | 10.1103/PhysRevResearch.1.033015 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Only numerical relativity simulations can capture the full complexities of
binary black hole mergers. These simulations, however, are prohibitively
expensive for direct data analysis applications such as parameter estimation.
We present two new fast and accurate surrogate models for the outputs of these
simulations: ... | [
{
"created": "Wed, 22 May 2019 18:00:11 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jul 2019 01:30:06 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Oct 2019 17:46:24 GMT",
"version": "v3"
}
] | 2019-10-16 | [
[
"Varma",
"Vijay",
""
],
[
"Field",
"Scott E.",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Blackman",
"Jonathan",
""
],
[
"Gerosa",
"Davide",
""
],
[
"Stein",
"Leo C.",
""
],
[
"Kidder",
"Lawrence E.",
""
],
... | Only numerical relativity simulations can capture the full complexities of binary black hole mergers. These simulations, however, are prohibitively expensive for direct data analysis applications such as parameter estimation. We present two new fast and accurate surrogate models for the outputs of these simulations: th... |
2311.10562 | Erik Aurell | Erik Aurell, Lucas Hackl, Pawe{\l} Horodecki, Robert H. Jonsson, Mario
Kieburg | Random pure Gaussian states and Hawking radiation | Published version, with supplementary material. Main paper 7 pages, 3
figures. Supplementary material 30 pages, 1 figure | Phys. Rev. Lett. 133, 060202 (2024) | 10.1103/PhysRevLett.133.060202 | NORDITA 2023-094 (for co-author RHJ) | gr-qc cond-mat.stat-mech quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A black hole evaporates by Hawking radiation. Each mode of that radiation is
thermal. If the total state is nevertheless to be pure, modes must be
entangled. Estimating the minimum size of this entanglement has been an
important outstanding issue. We develop a new theory of constrained random
symplectic transformatio... | [
{
"created": "Fri, 17 Nov 2023 14:54:03 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Dec 2023 12:44:42 GMT",
"version": "v2"
},
{
"created": "Wed, 7 Aug 2024 19:47:33 GMT",
"version": "v3"
}
] | 2024-08-09 | [
[
"Aurell",
"Erik",
""
],
[
"Hackl",
"Lucas",
""
],
[
"Horodecki",
"Paweł",
""
],
[
"Jonsson",
"Robert H.",
""
],
[
"Kieburg",
"Mario",
""
]
] | A black hole evaporates by Hawking radiation. Each mode of that radiation is thermal. If the total state is nevertheless to be pure, modes must be entangled. Estimating the minimum size of this entanglement has been an important outstanding issue. We develop a new theory of constrained random symplectic transformations... |
0901.0776 | J. Mark Heinzle | J. Mark Heinzle, Claes Uggla | Mixmaster: Fact and Belief | 34 pages, 10 figures | Class.Quant.Grav.26:075016,2009 | 10.1088/0264-9381/26/7/075016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the dynamics towards the initial singularity of Bianchi type IX
vacuum and orthogonal perfect fluid models with a linear equation of state.
Surprisingly few facts are known about the `Mixmaster' dynamics of these
models, while at the same time most of the commonly held beliefs are rather
vague. In this pa... | [
{
"created": "Wed, 7 Jan 2009 13:14:26 GMT",
"version": "v1"
}
] | 2009-03-27 | [
[
"Heinzle",
"J. Mark",
""
],
[
"Uggla",
"Claes",
""
]
] | We consider the dynamics towards the initial singularity of Bianchi type IX vacuum and orthogonal perfect fluid models with a linear equation of state. Surprisingly few facts are known about the `Mixmaster' dynamics of these models, while at the same time most of the commonly held beliefs are rather vague. In this pape... |
2105.06101 | Jo\~ao Lu\'is Rosa | Jo\~ao Lu\'is Rosa, Matheus A. Marques, Dionisio Bazeia, Francisco S.
N. Lobo | Thick branes in the scalar-tensor representation of $f(R,T)$ gravity | 14 pages, 12 figures | European Physical Journal C 81:981 (2021) | 10.1140/epjc/s10052-021-09783-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Braneworld scenarios consider our observable universe as a brane embedded in
a five-dimensional bulk. In this work, we consider thick braneworld systems in
the recently proposed dynamically equivalent scalar-tensor representation of
$f(R,T)$ gravity, where $R$ is the Ricci scalar and $T$ the trace of the
stress-energ... | [
{
"created": "Thu, 13 May 2021 06:37:43 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Nov 2021 08:52:00 GMT",
"version": "v2"
}
] | 2021-11-11 | [
[
"Rosa",
"João Luís",
""
],
[
"Marques",
"Matheus A.",
""
],
[
"Bazeia",
"Dionisio",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | Braneworld scenarios consider our observable universe as a brane embedded in a five-dimensional bulk. In this work, we consider thick braneworld systems in the recently proposed dynamically equivalent scalar-tensor representation of $f(R,T)$ gravity, where $R$ is the Ricci scalar and $T$ the trace of the stress-energy ... |
0803.0574 | Yun Soo Myung | Yong-Wan Kim, Hyung Won Lee, Yun Soo Myung, Mu-In Park | New agegraphic dark energy model with generalized uncertainty principle | 9 pages, 1 figure, version to appear in MPLA | Mod.Phys.Lett.A23:3049-3055,2008 | 10.1142/S021773230802848X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the new agegraphic dark energy models with generalized
uncertainty principle (GUP). It turns out that although the GUP affects the
early universe, it does not change the current and future dark energy-dominated
universe significantly. Furthermore, this model could describe the
matter-dominated universe... | [
{
"created": "Wed, 5 Mar 2008 00:53:04 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Aug 2008 23:12:38 GMT",
"version": "v2"
}
] | 2008-12-25 | [
[
"Kim",
"Yong-Wan",
""
],
[
"Lee",
"Hyung Won",
""
],
[
"Myung",
"Yun Soo",
""
],
[
"Park",
"Mu-In",
""
]
] | We investigate the new agegraphic dark energy models with generalized uncertainty principle (GUP). It turns out that although the GUP affects the early universe, it does not change the current and future dark energy-dominated universe significantly. Furthermore, this model could describe the matter-dominated universe i... |
2101.07917 | Jos\'e Villanueva | Mart\'in Molina and J.R. Villanueva | On the thermodynamics of the Hayward black hole | Accepted for publication in Class. Quantum Grav | null | 10.1088/1361-6382/abdd47 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In light of the growing interest in the Hayward black hole solution, a
detailed study on the corresponding lapse function and its roots is presented.
The lapse function is expressed in terms of the classical Schwarzschild radius
$r_s$ and the Hayward's parameter $l$. Both of these quantities are used as
thermodynamic... | [
{
"created": "Wed, 20 Jan 2021 01:05:33 GMT",
"version": "v1"
}
] | 2021-06-09 | [
[
"Molina",
"Martín",
""
],
[
"Villanueva",
"J. R.",
""
]
] | In light of the growing interest in the Hayward black hole solution, a detailed study on the corresponding lapse function and its roots is presented. The lapse function is expressed in terms of the classical Schwarzschild radius $r_s$ and the Hayward's parameter $l$. Both of these quantities are used as thermodynamic v... |
2006.06713 | Bhramar Chatterjee Dr. | Bhramar Chatterjee and Narayan Banerjee | Estimation of temperature of cosmological apparent horizons: a new
approach | 11 pages, A few references added | null | 10.1140/epjc/s10052-021-09408-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider radiation from cosmological apparent horizon in
Friedmann-Lemaitre-Robertson-Walker(FLRW) model in a double-null coordinate
setting. As the spacetime is dynamic, there is no timelike Killing vector,
instead we have Kodama vector which acts as dynamical time. We construct the
positive frequency modes of th... | [
{
"created": "Thu, 11 Jun 2020 18:12:47 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Jun 2020 10:10:16 GMT",
"version": "v2"
}
] | 2021-07-28 | [
[
"Chatterjee",
"Bhramar",
""
],
[
"Banerjee",
"Narayan",
""
]
] | We consider radiation from cosmological apparent horizon in Friedmann-Lemaitre-Robertson-Walker(FLRW) model in a double-null coordinate setting. As the spacetime is dynamic, there is no timelike Killing vector, instead we have Kodama vector which acts as dynamical time. We construct the positive frequency modes of the ... |
0810.1929 | Anil Zenginoglu C | Anil Zenginoglu, Dario Nunez, Sascha Husa | Gravitational perturbations of Schwarzschild spacetime at null infinity
and the hyperboloidal initial value problem | 14 pages, 9 figures | Class.Quant.Grav.26:035009,2009 | 10.1088/0264-9381/26/3/035009 | AEI-2008-081 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study gravitational perturbations of Schwarzschild spacetime by solving a
hyperboloidal initial value problem for the Bardeen-Press equation.
Compactification along hyperboloidal surfaces in a scri-fixing gauge allows us
to have access to the gravitational waveform at null infinity in a general
setup. We argue tha... | [
{
"created": "Fri, 10 Oct 2008 17:55:30 GMT",
"version": "v1"
}
] | 2009-01-16 | [
[
"Zenginoglu",
"Anil",
""
],
[
"Nunez",
"Dario",
""
],
[
"Husa",
"Sascha",
""
]
] | We study gravitational perturbations of Schwarzschild spacetime by solving a hyperboloidal initial value problem for the Bardeen-Press equation. Compactification along hyperboloidal surfaces in a scri-fixing gauge allows us to have access to the gravitational waveform at null infinity in a general setup. We argue that ... |
0704.2986 | Heiner Olbermann | Heiner Olbermann | States of Low Energy on Robertson-Walker Spacetimes | 24 pages, minor changes, acknoledgements added | Class.Quant.Grav.24:5011-5030,2007 | 10.1088/0264-9381/24/20/007 | null | gr-qc | null | We construct a new class of physical states of the free Klein-Gordon field in
Robertson-Walker spacetimes. This is done by minimizing the expectation value
of smeared stress-energy. We get an explicit expression for the state depending
on the smearing function. We call it a state of low energy. States of low
energy a... | [
{
"created": "Mon, 23 Apr 2007 14:53:42 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Apr 2007 14:01:09 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Olbermann",
"Heiner",
""
]
] | We construct a new class of physical states of the free Klein-Gordon field in Robertson-Walker spacetimes. This is done by minimizing the expectation value of smeared stress-energy. We get an explicit expression for the state depending on the smearing function. We call it a state of low energy. States of low energy are... |
2110.14496 | Masroor C. Pookkillath | Antonio De Felice, Shinji Mukohyama, Masroor C. Pookkillath | Static, spherically symmetric objects in Type-II minimally modified
gravity | 11 pages, no figures, uses revtex | null | 10.1103/PhysRevD.105.104013 | YITP-21-127, IPMU21-0068 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Static, spherically symmetric solutions representing stars made of barotropic
perfect fluid are studied in the context of two theories of type-II minimally
modified gravity, VCDM and VCCDM. Both of these theories share the property
that no additional degree of freedom is introduced in the gravity sector, and
propagat... | [
{
"created": "Wed, 27 Oct 2021 15:11:33 GMT",
"version": "v1"
}
] | 2022-05-25 | [
[
"De Felice",
"Antonio",
""
],
[
"Mukohyama",
"Shinji",
""
],
[
"Pookkillath",
"Masroor C.",
""
]
] | Static, spherically symmetric solutions representing stars made of barotropic perfect fluid are studied in the context of two theories of type-II minimally modified gravity, VCDM and VCCDM. Both of these theories share the property that no additional degree of freedom is introduced in the gravity sector, and propagate ... |
1406.4098 | James Bardeen | James M. Bardeen | Black hole evaporation without an event horizon | null | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A reformulation of the calculation of the semi-classical energy-momentum
tensor on a Schwarzschild background, the Bousso covariant entropy bound, and
the ER=EPR conjecture of Maldacena and Susskind taken together suggest a
scenario for the evaporation of a large spherically symmetric black hole formed
in gravitation... | [
{
"created": "Mon, 16 Jun 2014 18:51:48 GMT",
"version": "v1"
}
] | 2014-06-17 | [
[
"Bardeen",
"James M.",
""
]
] | A reformulation of the calculation of the semi-classical energy-momentum tensor on a Schwarzschild background, the Bousso covariant entropy bound, and the ER=EPR conjecture of Maldacena and Susskind taken together suggest a scenario for the evaporation of a large spherically symmetric black hole formed in gravitational... |
1311.3156 | Martin Reiris | Martin Reiris | Instability of the extreme Kerr-Newman black-holes | 25 pages. 6 figures | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using black-hole inequalities and the increase of the horizon's areas, we
show that there are arbitrarily small electro-vacuum perturbations of the
standard initial data of the extreme Reissner-Nordstrom black-hole that, (by
contradiction), cannot decay in time into any extreme Kerr-Newman black-hole.
This proves the... | [
{
"created": "Wed, 13 Nov 2013 15:03:43 GMT",
"version": "v1"
}
] | 2013-11-14 | [
[
"Reiris",
"Martin",
""
]
] | Using black-hole inequalities and the increase of the horizon's areas, we show that there are arbitrarily small electro-vacuum perturbations of the standard initial data of the extreme Reissner-Nordstrom black-hole that, (by contradiction), cannot decay in time into any extreme Kerr-Newman black-hole. This proves the e... |
gr-qc/9809019 | Ezra T. Newman | S. Frittelli, E.T. Newman, G. Silva-Ortigoza | The Eikonal Equation in Flat Space: Null Surfaces and Their
Singularities I | 33 pages, figures not included, accepted for publication in JMP | J.Math.Phys. 40 (1999) 383-407 | 10.1063/1.532777 | null | gr-qc | null | The level surfaces of solutions to the eikonal equation define null or
characteristic surfaces. In this note we study, in Minkowski space, properties
of these surfaces. In particular we are interested both in the singularities of
these ``surfaces'' (which can in general self-intersect and be only piece-wise
smooth) a... | [
{
"created": "Thu, 3 Sep 1998 18:50:39 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Frittelli",
"S.",
""
],
[
"Newman",
"E. T.",
""
],
[
"Silva-Ortigoza",
"G.",
""
]
] | The level surfaces of solutions to the eikonal equation define null or characteristic surfaces. In this note we study, in Minkowski space, properties of these surfaces. In particular we are interested both in the singularities of these ``surfaces'' (which can in general self-intersect and be only piece-wise smooth) and... |
2006.13628 | M. Ghasemi-Nodehi | M. Ghasemi-Nodehi | Testing Ghasemi-Nodehi-Bambi spacetime with continuum-fitting method | Published | Eur.Phys.J.C 80 (2020) 5, 405 | 10.1140/epjc/s10052-020-7916-8 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The continuum-fitting method is the analysis of the thermal spectrum of the
geometrically thin and optically thick accretion disk around stellar-mass black
holes. A parametrization aiming to test the Kerr nature of astrophysical black
holes was proposed in Ghasemi-Nodehi and Bambi in EPJC 76: 290, 2016. The
metric co... | [
{
"created": "Wed, 24 Jun 2020 11:08:35 GMT",
"version": "v1"
}
] | 2020-07-01 | [
[
"Ghasemi-Nodehi",
"M.",
""
]
] | The continuum-fitting method is the analysis of the thermal spectrum of the geometrically thin and optically thick accretion disk around stellar-mass black holes. A parametrization aiming to test the Kerr nature of astrophysical black holes was proposed in Ghasemi-Nodehi and Bambi in EPJC 76: 290, 2016. The metric cont... |
gr-qc/0703094 | J. Ponce de Leon | J. Ponce de Leon | The equivalence principle in Kaluza-Klein gravity | V3: The abstract and the Introduction section are improved. V4: Two
more references added to the Conclusion section. Accepted for publication in
IJMPD | Int.J.Mod.Phys.D18:251-273,2009 | 10.1142/S0218271809014418 | null | gr-qc | null | In four-dimensional general relativity the spacetime outside of an isolated
spherical star is described by a unique line element, which is the
Schwarzschild metric. As a consequence, the "gravitational" mass and the
"inertial" mass of a star are equal to each other. However, theories that
envision our world as embedd... | [
{
"created": "Mon, 19 Mar 2007 02:47:19 GMT",
"version": "v1"
},
{
"created": "Sun, 25 Mar 2007 19:32:57 GMT",
"version": "v2"
},
{
"created": "Tue, 19 Feb 2008 06:12:43 GMT",
"version": "v3"
},
{
"created": "Thu, 8 May 2008 06:02:14 GMT",
"version": "v4"
}
] | 2009-04-17 | [
[
"de Leon",
"J. Ponce",
""
]
] | In four-dimensional general relativity the spacetime outside of an isolated spherical star is described by a unique line element, which is the Schwarzschild metric. As a consequence, the "gravitational" mass and the "inertial" mass of a star are equal to each other. However, theories that envision our world as embedded... |
2106.03914 | Leonardo Modesto | Leonardo Modesto, Ali Akil, Cosimo Bambi | Conformalons and Trans-Planckian problem | 11 pages, 4 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In any conformally invariant gravitational theory, the space of exact
solutions is greatly enlarged. The Weyl's conformal invariance can then be
spontaneously broken to spherically symmetric vacuum solutions that exclude the
spacetime region inside the black hole's event horizon from our Universe. We
baptize these so... | [
{
"created": "Mon, 7 Jun 2021 18:46:49 GMT",
"version": "v1"
}
] | 2021-06-09 | [
[
"Modesto",
"Leonardo",
""
],
[
"Akil",
"Ali",
""
],
[
"Bambi",
"Cosimo",
""
]
] | In any conformally invariant gravitational theory, the space of exact solutions is greatly enlarged. The Weyl's conformal invariance can then be spontaneously broken to spherically symmetric vacuum solutions that exclude the spacetime region inside the black hole's event horizon from our Universe. We baptize these solu... |
gr-qc/0002036 | Santiago Esteban Perez Bergliaffa | S. E. Perez Bergliaffa and K. E. Hibberd | Electromagnetic waves in a wormhole geometry | LaTex file, 5 pages, 2 figures, one reference added, accepted for
publication in PRD | Phys.Rev. D62 (2000) 044045 | 10.1103/PhysRevD.62.044045 | null | gr-qc astro-ph | null | We investigate the propagation of electromagnetic waves through a static
wormhole. It is shown that the problem can be reduced to a one-dimensional
Schr\"odinger-like equation with a barrier-type potential. Using numerical
methods, we calculate the transmission coefficient as a function of the energy.
We also discuss... | [
{
"created": "Wed, 9 Feb 2000 16:52:41 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Jun 2000 21:01:18 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Bergliaffa",
"S. E. Perez",
""
],
[
"Hibberd",
"K. E.",
""
]
] | We investigate the propagation of electromagnetic waves through a static wormhole. It is shown that the problem can be reduced to a one-dimensional Schr\"odinger-like equation with a barrier-type potential. Using numerical methods, we calculate the transmission coefficient as a function of the energy. We also discuss t... |
gr-qc/0505118 | Pierre Noundjeu | P. Noundjeu | The Einstein-Vlasov-Maxwell(EVM) System with Spherical Symmetry | 24 pages, submitted to the Math.Proc.Camb.Phil.Soc | Class.Quant.Grav. 22 (2005) 5365-5384 | 10.1088/0264-9381/22/24/010 | null | gr-qc | null | We look for the global in time solution of the Cauchy problem corresponding
to the asymptotically flat spherically symmetric EVM system with small initial
data. Using an estimate, we also prove that if solution of the system stated
above develops a singularity at all time, then the first one has to appear at
the cent... | [
{
"created": "Mon, 23 May 2005 15:52:34 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Noundjeu",
"P.",
""
]
] | We look for the global in time solution of the Cauchy problem corresponding to the asymptotically flat spherically symmetric EVM system with small initial data. Using an estimate, we also prove that if solution of the system stated above develops a singularity at all time, then the first one has to appear at the center... |
gr-qc/0410050 | Yihuan Wei | Yi-Huan Wei | Late-time phantom universe in ${\bf SO(1,1)}$ dark energy model with
exponential potential | 9 pages | Mod.Phys.Lett. A20 (2005) 1147-1154 | 10.1142/S0217732305016774 | null | gr-qc | null | We discuss the late-time property of universe and phantom field in the
SO(1,1) dark energy model for the potential $V=V_0e^{-\beta\Phi^\alpha}$ with
$\alpha$ and $\beta$ two positive constants. We assume in advance some
conditions satisfied by the late-time field to simplify equations, which are
confirmed to be corre... | [
{
"created": "Tue, 12 Oct 2004 06:48:15 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Nov 2004 09:01:56 GMT",
"version": "v2"
},
{
"created": "Sun, 28 Nov 2004 02:34:43 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Wei",
"Yi-Huan",
""
]
] | We discuss the late-time property of universe and phantom field in the SO(1,1) dark energy model for the potential $V=V_0e^{-\beta\Phi^\alpha}$ with $\alpha$ and $\beta$ two positive constants. We assume in advance some conditions satisfied by the late-time field to simplify equations, which are confirmed to be correct... |
1201.5337 | Manuel Rodrigues | Manuel E. Rodrigues and Zui A. A. Oporto | Thermodynamics of phantom black holes in Einstein-Maxwell-Dilaton theory | 23 pages, version accepted for publication in Physical Review D | Phys. Rev. D 85, 104022 (2012) | 10.1103/PhysRevD.85.104022 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A thermodynamic analysis of the black hole solutions coming from the
Einstein-Maxwell-Dilaton theory (EMD) in 4D is done. By consider the canonical
and grand-canonical ensemble, we apply standard method as well as a recent
method known as Geometrothermodynamics (GTD). We are particularly interested in
the characteris... | [
{
"created": "Wed, 25 Jan 2012 18:11:09 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Mar 2012 04:06:54 GMT",
"version": "v2"
},
{
"created": "Fri, 13 Apr 2012 20:42:59 GMT",
"version": "v3"
}
] | 2012-06-08 | [
[
"Rodrigues",
"Manuel E.",
""
],
[
"Oporto",
"Zui A. A.",
""
]
] | A thermodynamic analysis of the black hole solutions coming from the Einstein-Maxwell-Dilaton theory (EMD) in 4D is done. By consider the canonical and grand-canonical ensemble, we apply standard method as well as a recent method known as Geometrothermodynamics (GTD). We are particularly interested in the characteristi... |
1311.0601 | Alexey Golovnev | Alexey Golovnev, Aleksandr Klementev | On hyperbolicity violations in cosmological models with vector fields | 6 pages; minor changes, a few references added | Journal of Cosmology and Astroparticle Physics, JCAP02(2014)033 | 10.1088/1475-7516/2014/02/033 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cosmological models with vector fields received much attention in recent
years. Unfortunately, most of them are plagued with severe instabilities or
other problems. In particular, it was noted by G. Esposito-Farese, C. Pitrou
and J.-Ph. Uzan in arXiv:0912.0481 that the models with a non-linear function
of the Maxwell... | [
{
"created": "Mon, 4 Nov 2013 08:07:51 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Dec 2013 18:22:17 GMT",
"version": "v2"
}
] | 2014-02-24 | [
[
"Golovnev",
"Alexey",
""
],
[
"Klementev",
"Aleksandr",
""
]
] | Cosmological models with vector fields received much attention in recent years. Unfortunately, most of them are plagued with severe instabilities or other problems. In particular, it was noted by G. Esposito-Farese, C. Pitrou and J.-Ph. Uzan in arXiv:0912.0481 that the models with a non-linear function of the Maxwellia... |
1506.00390 | Izzet Sakalli | H. Gursel and I. Sakalli | Hawking Radiation of Massive Vector Particles From Warped AdS$_3$ Black
Hole | 5 pages. Some typos are corrected. To be appeared in Can. J. Phys | Canadian Journal of Physics, 94, 147 (2016) | 10.1139/cjp-2015-0495 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hawking radiation (HR) of massive vector particles from a rotating Warped
Anti-de Sitter black hole in 2+1 dimensions (WAdS$_{\text{3}}$BH) is studied in
detail. The quantum tunneling approach with the Hamilton-Jacobi method (HJM) is
applied in the Proca equation (PE), and we show that the radial function yields
the ... | [
{
"created": "Mon, 1 Jun 2015 08:43:21 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Oct 2015 07:13:38 GMT",
"version": "v2"
},
{
"created": "Fri, 12 Feb 2016 21:57:37 GMT",
"version": "v3"
}
] | 2016-02-16 | [
[
"Gursel",
"H.",
""
],
[
"Sakalli",
"I.",
""
]
] | Hawking radiation (HR) of massive vector particles from a rotating Warped Anti-de Sitter black hole in 2+1 dimensions (WAdS$_{\text{3}}$BH) is studied in detail. The quantum tunneling approach with the Hamilton-Jacobi method (HJM) is applied in the Proca equation (PE), and we show that the radial function yields the tu... |
1502.00599 | Jacek Jezierski | Jacek Jezierski and Tomasz Smo{\l}ka | A geometric description of Maxwell field in a Kerr spacetime | 19 pages | Class. Quantum Grav. 33 (2016) 125035 | 10.1088/0264-9381/33/12/125035 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Maxwell field in the exterior of a Kerr black hole. For this
system, we propose a geometric construction of generalized Klein-Gordon
equation called Fackerell-Ipser equation. Our model is based on conformal
Yano-Kiling tensor (CYK tensor). We present non-standard properties of CYK
tensors in the Kerr ... | [
{
"created": "Mon, 2 Feb 2015 20:01:30 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Jun 2016 16:06:25 GMT",
"version": "v2"
}
] | 2016-06-14 | [
[
"Jezierski",
"Jacek",
""
],
[
"Smołka",
"Tomasz",
""
]
] | We consider the Maxwell field in the exterior of a Kerr black hole. For this system, we propose a geometric construction of generalized Klein-Gordon equation called Fackerell-Ipser equation. Our model is based on conformal Yano-Kiling tensor (CYK tensor). We present non-standard properties of CYK tensors in the Kerr sp... |
1507.00406 | Anuradha Gupta | Anuradha Gupta and Achamveedu Gopakumar | Post-newtonian analysis of precessing convention for spinning compact
binaries | 20 pages, 4 figures, matches published version | Class. Quantum Grav. 32 (2015) 175002 | 10.1088/0264-9381/32/17/175002 | LIGO-P1400178 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A precessing source frame, constructed using the Newtonian orbital angular
momentum ${\bf L_{\rm N}}$, can be invoked to model inspiral gravitational
waves from generic spinning compact binaries. An attractive feature of such a
precessing convention is its ability to remove all spin precession induced
modulations fro... | [
{
"created": "Thu, 2 Jul 2015 01:55:25 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Aug 2015 05:54:08 GMT",
"version": "v2"
}
] | 2015-08-06 | [
[
"Gupta",
"Anuradha",
""
],
[
"Gopakumar",
"Achamveedu",
""
]
] | A precessing source frame, constructed using the Newtonian orbital angular momentum ${\bf L_{\rm N}}$, can be invoked to model inspiral gravitational waves from generic spinning compact binaries. An attractive feature of such a precessing convention is its ability to remove all spin precession induced modulations from ... |
2101.06700 | Finnian Gray | Finnian Gray, Tsuyoshi Houri, David Kubiznak, Yukinori Yasui | Symmetry operators for the conformal wave equation in rotating black
hole spacetimes | v2: extended version which contains discussion of conformally
invariant symmetry operators | null | 10.1103/PhysRevD.104.084042 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We present covariant symmetry operators for the conformal wave equation in
the (off-shell) Kerr-NUT-AdS spacetimes. These operators, that are constructed
from the principal Killing-Yano tensor, its `symmetry descendants', and the
curvature tensor, guarantee separability of the conformal wave equation in
these spaceti... | [
{
"created": "Sun, 17 Jan 2021 16:15:58 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Apr 2021 22:01:24 GMT",
"version": "v2"
}
] | 2021-10-20 | [
[
"Gray",
"Finnian",
""
],
[
"Houri",
"Tsuyoshi",
""
],
[
"Kubiznak",
"David",
""
],
[
"Yasui",
"Yukinori",
""
]
] | We present covariant symmetry operators for the conformal wave equation in the (off-shell) Kerr-NUT-AdS spacetimes. These operators, that are constructed from the principal Killing-Yano tensor, its `symmetry descendants', and the curvature tensor, guarantee separability of the conformal wave equation in these spacetime... |
1804.03656 | Spyros Basilakos | S. Basilakos, A. Paliathanasis, J.D. Barrow and G. Papagiannopoulos | Cosmological singularities and analytical solutions in varying vacuum
cosmologies | 16 pages, 5 figures, accepted for publication by European Physical
Journal C (EPJC) | null | 10.1140/epjc/s10052-018-6139-8 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the dynamical features of a large family of running vacuum
cosmologies for which $\Lambda$ evolves as a polynomial in the Hubble
parameter. Specifically, using the critical point analysis we study the
existence and the stability of singular solutions which describe de-Sitter,
radiation and matter domin... | [
{
"created": "Tue, 10 Apr 2018 10:16:31 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Apr 2018 06:36:38 GMT",
"version": "v2"
},
{
"created": "Tue, 7 Aug 2018 12:49:33 GMT",
"version": "v3"
}
] | 2018-09-26 | [
[
"Basilakos",
"S.",
""
],
[
"Paliathanasis",
"A.",
""
],
[
"Barrow",
"J. D.",
""
],
[
"Papagiannopoulos",
"G.",
""
]
] | We investigate the dynamical features of a large family of running vacuum cosmologies for which $\Lambda$ evolves as a polynomial in the Hubble parameter. Specifically, using the critical point analysis we study the existence and the stability of singular solutions which describe de-Sitter, radiation and matter dominat... |
2309.04443 | Bence B\'ecsy | Bence B\'ecsy, Neil J. Cornish, Patrick M. Meyers, Luke Zoltan Kelley,
Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian,
Paul T. Baker, Laura Blecha, Adam Brazier, Paul R. Brook, Sarah
Burke-Spolaor, J. Andrew Casey-Clyde, Maria Charisi, Shami Chatterjee,
Katerina Chatziioannou, Tyler ... | How to Detect an Astrophysical Nanohertz Gravitational-Wave Background | 14 pages, 8 figures, version matching published paper | ApJ 959 9 (2023) | 10.3847/1538-4357/ad09e4 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Analysis of pulsar timing data have provided evidence for a stochastic
gravitational wave background in the nHz frequency band. The most plausible
source of such a background is the superposition of signals from millions of
supermassive black hole binaries. The standard statistical techniques used to
search for such ... | [
{
"created": "Fri, 8 Sep 2023 17:08:52 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Dec 2023 19:50:22 GMT",
"version": "v2"
}
] | 2023-12-05 | [
[
"Bécsy",
"Bence",
""
],
[
"Cornish",
"Neil J.",
""
],
[
"Meyers",
"Patrick M.",
""
],
[
"Kelley",
"Luke Zoltan",
""
],
[
"Agazie",
"Gabriella",
""
],
[
"Anumarlapudi",
"Akash",
""
],
[
"Archibald",
"Anne M.",
... | Analysis of pulsar timing data have provided evidence for a stochastic gravitational wave background in the nHz frequency band. The most plausible source of such a background is the superposition of signals from millions of supermassive black hole binaries. The standard statistical techniques used to search for such a ... |
gr-qc/0411147 | Francois Limousin | Francois Limousin (LUTH), Dorota Gondek-Rosinska (LUTH, CAMK), Eric
Gourgoulhon (LUTH) | Quasiequilibrium sequences of binary strange quark stars in general
relativity | 4 pages, 2 PostScript figures, to appear in the Proceedings of the
SF2A 04, Paris, France | null | null | null | gr-qc | null | Inspiraling compact binaries are expected to be the strongest sources of
gravitational waves for VIRGO, LIGO and other laser interferometers. We present
the first computations of quasi-equilibrium sequences of compact binaries
containing two strange quark stars (which are currently considered as a
possible alternativ... | [
{
"created": "Tue, 30 Nov 2004 16:09:44 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Limousin",
"Francois",
"",
"LUTH"
],
[
"Gondek-Rosinska",
"Dorota",
"",
"LUTH, CAMK"
],
[
"Gourgoulhon",
"Eric",
"",
"LUTH"
]
] | Inspiraling compact binaries are expected to be the strongest sources of gravitational waves for VIRGO, LIGO and other laser interferometers. We present the first computations of quasi-equilibrium sequences of compact binaries containing two strange quark stars (which are currently considered as a possible alternative ... |
2105.07883 | Dr. Shikha Srivastava | Umesh Kumar Sharma and Shikha Srivastava | The cosmological behaviour and the statefinder diagnosis for the New
Tsallis agegraphic dark energy | 10 pages, 7 figures | Modern Physics Letters A Vol. 35, No. 38 (2020) 2050318 (10 pages) | 10.1142/S0217732320503186 | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | In this work, we have considered the recently proposed new Tsallis Agegraphic
Dark Energy model (NTADE) (Mod. Phys. Lett. A 34, 1950086, 2019) within the
framework of a flat Friedmann-Robertson-Walker(FRW)
Universe by taking various values of the parameter $\delta$. The NTADE model
shows the current phase transitio... | [
{
"created": "Fri, 14 May 2021 07:12:56 GMT",
"version": "v1"
}
] | 2021-05-18 | [
[
"Sharma",
"Umesh Kumar",
""
],
[
"Srivastava",
"Shikha",
""
]
] | In this work, we have considered the recently proposed new Tsallis Agegraphic Dark Energy model (NTADE) (Mod. Phys. Lett. A 34, 1950086, 2019) within the framework of a flat Friedmann-Robertson-Walker(FRW) Universe by taking various values of the parameter $\delta$. The NTADE model shows the current phase transition of... |
1511.04425 | Cupatitzio Ram\'irez Romero | C. Ram\'irez and V. V\'azquez-B\'aez | Quantum supersymmetric FRW cosmology with a scalar field | 12 pages, 11 figures | null | 10.1103/PhysRevD.93.043505 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the quantum supersymmetric cosmological FRW model with a scalar
field, with a conditional probability density and the scalar field identified
as time. The Hilbert space has a spinorial structure and there is only one
consistent solution, with a conserved probability density. The dynamics of the
scale facto... | [
{
"created": "Fri, 13 Nov 2015 20:36:08 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Dec 2015 22:55:51 GMT",
"version": "v2"
}
] | 2016-03-23 | [
[
"Ramírez",
"C.",
""
],
[
"Vázquez-Báez",
"V.",
""
]
] | We analyze the quantum supersymmetric cosmological FRW model with a scalar field, with a conditional probability density and the scalar field identified as time. The Hilbert space has a spinorial structure and there is only one consistent solution, with a conserved probability density. The dynamics of the scale factor ... |
2111.00953 | Ke Wang | Ke Wang | Retesting the no-hair theorem with GW150914 | 5 pages, 2 figures | null | 10.1140/epjc/s10052-022-10049-x | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For a distorted black hole (BH), its ringdown waveform is a superposition of
quasi-normal modes (QNMs). In general relativity (GR), the lower order QNM
frequencies and damping rates can be well approximated by a polynomial of BH's
dimensionless spin and overall scaled by BH's mass. That is to say, we can test
the no-... | [
{
"created": "Mon, 1 Nov 2021 13:53:45 GMT",
"version": "v1"
},
{
"created": "Sun, 23 Jan 2022 16:45:58 GMT",
"version": "v2"
}
] | 2022-02-23 | [
[
"Wang",
"Ke",
""
]
] | For a distorted black hole (BH), its ringdown waveform is a superposition of quasi-normal modes (QNMs). In general relativity (GR), the lower order QNM frequencies and damping rates can be well approximated by a polynomial of BH's dimensionless spin and overall scaled by BH's mass. That is to say, we can test the no-ha... |
1401.5104 | Sergio Mendoza | S. Mendoza, G.J. Olmo | Astrophysical constraints and insights on extended relativistic gravity | 6 pages | Astrophys.Space Sci. 357 (2015) 2, 133 | 10.1007/s10509-015-2363-y | IFIC/14-09 | gr-qc astro-ph.CO astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give precise details to support that observations of gravitational lensing
at scales of individual, groups and clusters of galaxies can be understood in
terms of non-Newtonian gravitational interactions with a relativistic structure
compatible with the Einstein Equivalence Principle. This result is derived on
very... | [
{
"created": "Mon, 20 Jan 2014 21:51:40 GMT",
"version": "v1"
}
] | 2015-06-02 | [
[
"Mendoza",
"S.",
""
],
[
"Olmo",
"G. J.",
""
]
] | We give precise details to support that observations of gravitational lensing at scales of individual, groups and clusters of galaxies can be understood in terms of non-Newtonian gravitational interactions with a relativistic structure compatible with the Einstein Equivalence Principle. This result is derived on very g... |
1403.1204 | Mohammad Vahid Takook | Mohammad Vahid Takook | Quantum Field Theory in de Sitter Universe: Ambient Space Formalism | 75 pages, typos corrected, paper improved, V5 some errors corrected | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum field theory in the $4$-dimensional de Sitter space-time is
constructed in the ambient space formalism in a rigorous mathematical
framework. This work is based on the group representation theory and the
analyticity of the complexified pseudo-Riemannian manifolds. The unitary
irreducible representations of de ... | [
{
"created": "Wed, 5 Mar 2014 18:06:08 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Mar 2014 04:44:02 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Sep 2014 19:29:50 GMT",
"version": "v3"
},
{
"created": "Tue, 29 Dec 2015 16:36:18 GMT",
"version": "v4"
},
{
"cre... | 2016-07-21 | [
[
"Takook",
"Mohammad Vahid",
""
]
] | Quantum field theory in the $4$-dimensional de Sitter space-time is constructed in the ambient space formalism in a rigorous mathematical framework. This work is based on the group representation theory and the analyticity of the complexified pseudo-Riemannian manifolds. The unitary irreducible representations of de Si... |
2112.11168 | Laura Sberna | Laura Sberna, Pablo Bosch, William E. East, Stephen R. Green, Luis
Lehner | Nonlinear effects in the black hole ringdown: absorption-induced mode
excitation | 15+4 pages, 9+4 figures | Phys. Rev. D 105, 064046 (2022) | 10.1103/PhysRevD.105.064046 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave observations of black hole ringdowns are commonly used to
characterize binary merger remnants and to test general relativity. These
analyses assume linear black hole perturbation theory, in particular that the
ringdown can be described in terms of quasinormal modes even for times
approaching the me... | [
{
"created": "Tue, 21 Dec 2021 13:04:18 GMT",
"version": "v1"
}
] | 2022-08-31 | [
[
"Sberna",
"Laura",
""
],
[
"Bosch",
"Pablo",
""
],
[
"East",
"William E.",
""
],
[
"Green",
"Stephen R.",
""
],
[
"Lehner",
"Luis",
""
]
] | Gravitational-wave observations of black hole ringdowns are commonly used to characterize binary merger remnants and to test general relativity. These analyses assume linear black hole perturbation theory, in particular that the ringdown can be described in terms of quasinormal modes even for times approaching the merg... |
gr-qc/0308077 | Shijun Yoshida | Shijun Yoshida, Toshifumi Futamase | Numerical analysis of quasinormal modes in nearly extremal
Schwarzschild-de Sitter spacetimes | 9 pages, 7 figures, to appear in Physical Review D | Phys.Rev. D69 (2004) 064025 | 10.1103/PhysRevD.69.064025 | null | gr-qc | null | We calculate high-order quasinormal modes with large imaginary frequencies
for electromagnetic and gravitational perturbations in nearly extremal
Schwarzschild-de Sitter spacetimes. Our results show that for low-order
quasinormal modes, the analytical approximation formula in the extremal limit
derived by Cardoso and... | [
{
"created": "Sun, 24 Aug 2003 11:14:33 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Sep 2003 14:59:56 GMT",
"version": "v2"
},
{
"created": "Thu, 20 Nov 2003 11:02:39 GMT",
"version": "v3"
},
{
"created": "Thu, 22 Jan 2004 10:34:51 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Yoshida",
"Shijun",
""
],
[
"Futamase",
"Toshifumi",
""
]
] | We calculate high-order quasinormal modes with large imaginary frequencies for electromagnetic and gravitational perturbations in nearly extremal Schwarzschild-de Sitter spacetimes. Our results show that for low-order quasinormal modes, the analytical approximation formula in the extremal limit derived by Cardoso and L... |
1506.08561 | Shinji Tsujikawa | Shinji Tsujikawa | Cosmological disformal transformations to the Einstein frame and
gravitational couplings with matter perturbations | 22 pages, 4 figures | Phys. Rev. D 92, 064047 (2015) | 10.1103/PhysRevD.92.064047 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The disformal transformation of metric $g_{\mu \nu} \to \Omega^2 (\phi)g_{\mu
\nu}+\Gamma(\phi,X) \partial_{\mu}\phi \partial_{\nu}\phi$, where $\phi$ is a
scalar field with the kinetic energy $X= \partial_{\mu}\phi
\partial^{\mu}\phi/2$, preserves the Lagrangian structure of
Gleyzes-Langlois-Piazza-Vernizzi (GLPV) t... | [
{
"created": "Mon, 29 Jun 2015 09:40:03 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Oct 2015 06:25:22 GMT",
"version": "v2"
}
] | 2015-10-07 | [
[
"Tsujikawa",
"Shinji",
""
]
] | The disformal transformation of metric $g_{\mu \nu} \to \Omega^2 (\phi)g_{\mu \nu}+\Gamma(\phi,X) \partial_{\mu}\phi \partial_{\nu}\phi$, where $\phi$ is a scalar field with the kinetic energy $X= \partial_{\mu}\phi \partial^{\mu}\phi/2$, preserves the Lagrangian structure of Gleyzes-Langlois-Piazza-Vernizzi (GLPV) the... |
1606.06994 | Saheb Soroushfar | Sara Dastan, Reza Saffari, Saheb Soroushfar | Shadow of a Charged Rotating Black Hole in $f(R)$ Gravity | 28 pages,6 tables,43 figures | Eur. Phys. J. Plus 137, 1002 (2022) | 10.1140/epjp/s13360-022-03218-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the shadow of a charged rotating black hole in $f(R)$ gravity. This
black hole is characterized by mass, $M$, spin, $a$, electric charge, $Q$ and
$R_{0}$ which is proportional to cosmological constant. We analyze the image of
the black hole's shadow in four types 1) at $r\rightarrow\infty$, 2) at
$r\rightarr... | [
{
"created": "Wed, 22 Jun 2016 15:59:45 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Jan 2017 16:08:29 GMT",
"version": "v2"
}
] | 2022-10-06 | [
[
"Dastan",
"Sara",
""
],
[
"Saffari",
"Reza",
""
],
[
"Soroushfar",
"Saheb",
""
]
] | We study the shadow of a charged rotating black hole in $f(R)$ gravity. This black hole is characterized by mass, $M$, spin, $a$, electric charge, $Q$ and $R_{0}$ which is proportional to cosmological constant. We analyze the image of the black hole's shadow in four types 1) at $r\rightarrow\infty$, 2) at $r\rightarrow... |
2207.06376 | Thomas W. Baumgarte | Thomas W. Baumgarte and David Hilditch | Shock-avoiding slicing conditions: tests and calibrations | 10 pages, 11 figures | null | 10.1103/PhysRevD.106.044014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | While the 1+log slicing condition has been extremely successful in numerous
numerical relativity simulations, it is also known to develop "gauge-shocks" in
some examples. Alternative "shock-avoiding" slicing conditions suggested by
Alcubierre prevent these pathologies in those examples, but have not yet been
explored... | [
{
"created": "Wed, 13 Jul 2022 17:29:44 GMT",
"version": "v1"
}
] | 2022-08-17 | [
[
"Baumgarte",
"Thomas W.",
""
],
[
"Hilditch",
"David",
""
]
] | While the 1+log slicing condition has been extremely successful in numerous numerical relativity simulations, it is also known to develop "gauge-shocks" in some examples. Alternative "shock-avoiding" slicing conditions suggested by Alcubierre prevent these pathologies in those examples, but have not yet been explored a... |
gr-qc/0606099 | Mark Hannam | Mark Hannam, Sascha Husa, Denis Pollney, Bernd Bruegmann, Niall
O'Murchadha | Geometry and Regularity of Moving Punctures | 4 pages, 2 figures. Replaced with version that matches the one
published in PRL: one extra figure, and modified abstract and introduction | Phys.Rev.Lett.99:241102,2007 | 10.1103/PhysRevLett.99.241102 | null | gr-qc | null | Significant advances in numerical simulations of black-hole binaries have
recently been achieved using the puncture method. We examine how and why this
method works by evolving a single black hole. The coordinate singularity and
hence the geometry at the puncture are found to change during evolution, from
representin... | [
{
"created": "Fri, 23 Jun 2006 13:59:49 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Jan 2008 16:36:20 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Hannam",
"Mark",
""
],
[
"Husa",
"Sascha",
""
],
[
"Pollney",
"Denis",
""
],
[
"Bruegmann",
"Bernd",
""
],
[
"O'Murchadha",
"Niall",
""
]
] | Significant advances in numerical simulations of black-hole binaries have recently been achieved using the puncture method. We examine how and why this method works by evolving a single black hole. The coordinate singularity and hence the geometry at the puncture are found to change during evolution, from representing ... |
1401.1398 | Gianluca Mandanici | Gianluca Mandanici | A map between Galilean relativity and special relativity | 8 pages | null | null | null | gr-qc physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A map is discussed that connects, in 1+1 dimensions, Galilei's relativity to
Einstein's special relativity. By means of this map it is possible to derive
special-relativistic formulas from the corresponding Galilean ones. Beyond
being interesting on its own, this map is also significant with respect to a
recent debat... | [
{
"created": "Sat, 28 Dec 2013 23:08:11 GMT",
"version": "v1"
}
] | 2014-01-16 | [
[
"Mandanici",
"Gianluca",
""
]
] | A map is discussed that connects, in 1+1 dimensions, Galilei's relativity to Einstein's special relativity. By means of this map it is possible to derive special-relativistic formulas from the corresponding Galilean ones. Beyond being interesting on its own, this map is also significant with respect to a recent debate ... |
1910.01774 | M. B. Paranjape | Matthew C. Johnson, M. B. Paranjape, Antoine Savard and Natalia
Tapia-Arellano | Stable, thin wall, negative mass bubbles in de Sitter space-time | 12 pages, 9 figures, minor changes | null | 10.1007/s10714-020-02732-9 | UdeM-GPP-TH-19-274 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Negative mass makes perfect physical sense as long as the dominant energy
condition is satisfied by the corresponding energy-momentum tensor. Heretofore,
only {\it configurations} of negative mass had been found
\cite{Belletete:2013nqa,Mbarek:2014ppa}, the analysis did not address stability
or dynamics. In this paper... | [
{
"created": "Fri, 4 Oct 2019 01:34:38 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Nov 2019 17:22:15 GMT",
"version": "v2"
},
{
"created": "Sat, 16 Nov 2019 22:46:23 GMT",
"version": "v3"
},
{
"created": "Sun, 17 May 2020 20:12:30 GMT",
"version": "v4"
}
] | 2020-09-09 | [
[
"Johnson",
"Matthew C.",
""
],
[
"Paranjape",
"M. B.",
""
],
[
"Savard",
"Antoine",
""
],
[
"Tapia-Arellano",
"Natalia",
""
]
] | Negative mass makes perfect physical sense as long as the dominant energy condition is satisfied by the corresponding energy-momentum tensor. Heretofore, only {\it configurations} of negative mass had been found \cite{Belletete:2013nqa,Mbarek:2014ppa}, the analysis did not address stability or dynamics. In this paper, ... |
1801.06037 | Paul Klinger | Piotr T. Chru\'sciel, Paul Klinger | The annoying null boundaries | 15 pages | null | 10.1088/1742-6596/968/1/012003 | UWThPh-2017-36 | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a class of globally hyperbolic space-times with "expanding
singularities". Under suitable assumptions we show that no $C^0$-extensions
across a compact boundary exist, while the boundary must be null wherever
differentiable (which is almost everywhere) in the non-compact case.
| [
{
"created": "Thu, 18 Jan 2018 14:33:18 GMT",
"version": "v1"
}
] | 2018-03-14 | [
[
"Chruściel",
"Piotr T.",
""
],
[
"Klinger",
"Paul",
""
]
] | We consider a class of globally hyperbolic space-times with "expanding singularities". Under suitable assumptions we show that no $C^0$-extensions across a compact boundary exist, while the boundary must be null wherever differentiable (which is almost everywhere) in the non-compact case. |
1307.5470 | Bahram Mashhoon | Bahram Mashhoon and Yuri N. Obukhov | Spin Precession in Inertial and Gravitational Fields | 21 pages; v2: slightly expanded version accepted for publication in
Phys. Rev. D | Phys. Rev. D 88 (2013) 064037 | 10.1103/PhysRevD.88.064037 | null | gr-qc cond-mat.mes-hall hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the motion of spin in inertial and gravitational fields. The
coupling of spin with rotation and the gravitomagnetic field has already been
extensively studied; therefore, we focus here on the inertial and gravitational
spin-orbit couplings. In particular, we investigate the classical and quantum
aspects of... | [
{
"created": "Sat, 20 Jul 2013 22:25:17 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Sep 2013 23:02:26 GMT",
"version": "v2"
}
] | 2013-09-25 | [
[
"Mashhoon",
"Bahram",
""
],
[
"Obukhov",
"Yuri N.",
""
]
] | We discuss the motion of spin in inertial and gravitational fields. The coupling of spin with rotation and the gravitomagnetic field has already been extensively studied; therefore, we focus here on the inertial and gravitational spin-orbit couplings. In particular, we investigate the classical and quantum aspects of s... |
2310.00714 | Manuel Rodrigues | J\'ulio C. Fabris, Ednaldo L. B. Junior, Manuel E. Rodrigues | Generalized models for black-bounce solutions in $f(R)$ Gravity | 9 pages, 4 figures | Eur. Phys. J. C 83, 884 (2023) | 10.1140/epjc/s10052-023-12022-8 | null | gr-qc astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, the implementation of black-bounce solutions in $f(R)$
theories is investigated. Black-bounce solutions are regular configurations of
the static spherically symmetric space-time, containing both black holes and
wormholes structures. In General Relativity (GR), black-bounce solution implies
violation ... | [
{
"created": "Sun, 1 Oct 2023 16:23:27 GMT",
"version": "v1"
}
] | 2023-10-03 | [
[
"Fabris",
"Júlio C.",
""
],
[
"Junior",
"Ednaldo L. B.",
""
],
[
"Rodrigues",
"Manuel E.",
""
]
] | In this article, the implementation of black-bounce solutions in $f(R)$ theories is investigated. Black-bounce solutions are regular configurations of the static spherically symmetric space-time, containing both black holes and wormholes structures. In General Relativity (GR), black-bounce solution implies violation of... |
gr-qc/0212108 | Dr. Anirudh Pradhan | Anirudh Pradhan and Abha Rai | Tilted Bianchi Type I Cosmological Models Filled with Disordered
Radiation in General Relativity Revisited | 12 pages | Astrophys.Space Sci. 286 (2003) 555-566 | 10.1023/A:1026301915781 | null | gr-qc | null | Tilted Bianchi type I cosmological models filled with disordered radiation in
presence of a bulk viscous fluid and heat flow are investigated. The
coefficient of bulk viscosity is assumed to be a power function of mass
density. Some physical and geometric properties of the models are also
discussed.
| [
{
"created": "Thu, 26 Dec 2002 16:51:38 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Pradhan",
"Anirudh",
""
],
[
"Rai",
"Abha",
""
]
] | Tilted Bianchi type I cosmological models filled with disordered radiation in presence of a bulk viscous fluid and heat flow are investigated. The coefficient of bulk viscosity is assumed to be a power function of mass density. Some physical and geometric properties of the models are also discussed. |
gr-qc/0204064 | Jean-Paul Mbelek | J.P. Mbelek (Service d'Astrophysique, CEA, Saclay, France), M.
Lachi\`eze-Rey (Service d'Astrophysique, CEA, Saclay, France) | Possible evidence from laboratory measurements for a latitude and
longitude dependence of G | Latex, 20 pages with 2 Postscript figures | Grav.Cosmol. 8 (2002) 331-338 | null | null | gr-qc | null | Stability arguments suggest that the Kaluza-Klein (KK) internal scalar field,
$\Phi$, should be coupled to some external fields. An external bulk real scalar
field, $\psi$, minimally coupled to gravity is proved to be satisfactory. At
low temperature, the coupling of $\psi$ to the electromagnetic (EM) field
allows $\... | [
{
"created": "Fri, 19 Apr 2002 16:51:18 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mbelek",
"J. P.",
"",
"Service d'Astrophysique, CEA, Saclay, France"
],
[
"Lachièze-Rey",
"M.",
"",
"Service d'Astrophysique, CEA, Saclay, France"
]
] | Stability arguments suggest that the Kaluza-Klein (KK) internal scalar field, $\Phi$, should be coupled to some external fields. An external bulk real scalar field, $\psi$, minimally coupled to gravity is proved to be satisfactory. At low temperature, the coupling of $\psi$ to the electromagnetic (EM) field allows $\Ph... |
2310.18399 | Alexandre M. Pombo | Lorenzo Pizzuti and Alexandre M. Pombo | The spooky ghost of vectorization | 12 pages | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An interesting mechanism for the formation of hairy black holes occurs when a
vector field, non-minimally coupled to a source term, grows from a perturbation
of the vacuum black hole, \textit{aka} vectorization. Its study has, however,
been lacking, in part due to the constant threat of ghost instabilities that
have ... | [
{
"created": "Fri, 27 Oct 2023 18:00:04 GMT",
"version": "v1"
}
] | 2023-10-31 | [
[
"Pizzuti",
"Lorenzo",
""
],
[
"Pombo",
"Alexandre M.",
""
]
] | An interesting mechanism for the formation of hairy black holes occurs when a vector field, non-minimally coupled to a source term, grows from a perturbation of the vacuum black hole, \textit{aka} vectorization. Its study has, however, been lacking, in part due to the constant threat of ghost instabilities that have pl... |
2110.01063 | Irene Denisova | V.I.Denisov, I.P.Denisova and E.T. Einiev | The investigation of low frequency dilaton generation | 7 pages | null | 10.1140/epjc/s10052-022-10193-4 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The electromagnetic source of dilaton is a first invariant
of the electromagnetic field tensor. For
electromagnetic waves, this invariant can be non zero only in the near zone.
Pulsars and magnetars are natural sources of this type.
We calculated the generation of dilatons by coherent
electromagnetic field ... | [
{
"created": "Sun, 3 Oct 2021 18:24:04 GMT",
"version": "v1"
}
] | 2022-04-27 | [
[
"Denisov",
"V. I.",
""
],
[
"Denisova",
"I. P.",
""
],
[
"Einiev",
"E. T.",
""
]
] | The electromagnetic source of dilaton is a first invariant of the electromagnetic field tensor. For electromagnetic waves, this invariant can be non zero only in the near zone. Pulsars and magnetars are natural sources of this type. We calculated the generation of dilatons by coherent electromagnetic field of rotating ... |
2403.16721 | Iarley P. Lobo Dr | Giovanni Amelino-Camelia, Iarley P. Lobo and Giovanni Palmisano | Anti-de Sitter Momentum Space in 3D and 4D Quantum Gravity | 19 pages. Matches published version in Classical and Quantum Gravity,
"Special Issue: Focus on Quantum Gravity Phenomenology in the Multi-Messenger
Era: Challenges and Perspectives" | Class. Quant. Grav. 41 (2024) 8, 085006 | 10.1088/1361-6382/ad3163 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | There has been strong interest in the possibility that in the quantum-gravity
realm momentum space might be curved, mainly focusing, especially for what
concerns phenomenological implications, on the case of a de Sitter momentum
space. We here take as starting point the known fact that quantum gravity
coupled to matt... | [
{
"created": "Mon, 25 Mar 2024 12:57:16 GMT",
"version": "v1"
}
] | 2024-03-26 | [
[
"Amelino-Camelia",
"Giovanni",
""
],
[
"Lobo",
"Iarley P.",
""
],
[
"Palmisano",
"Giovanni",
""
]
] | There has been strong interest in the possibility that in the quantum-gravity realm momentum space might be curved, mainly focusing, especially for what concerns phenomenological implications, on the case of a de Sitter momentum space. We here take as starting point the known fact that quantum gravity coupled to matter... |
2308.03342 | Merab Gogberashvili Prof | Merab Gogberashvili and Ani Girgvliani | General spherically symmetric solution of Cotton gravity | Journal version | Class. Quantum Grav. 41 (2024) 025010 | 10.1088/1361-6382/ad1781 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we present the general spherically symmetric static solution to
the vacuum equations of Cotton gravity. The obtained metric solution reveals
the presence of singularities at the photosphere of a spherical source, which
probably obstruct the formation of the stellar Schwarzschild-radius black
holes. The ... | [
{
"created": "Mon, 7 Aug 2023 06:50:36 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Jan 2024 06:57:57 GMT",
"version": "v2"
}
] | 2024-01-08 | [
[
"Gogberashvili",
"Merab",
""
],
[
"Girgvliani",
"Ani",
""
]
] | In this paper we present the general spherically symmetric static solution to the vacuum equations of Cotton gravity. The obtained metric solution reveals the presence of singularities at the photosphere of a spherical source, which probably obstruct the formation of the stellar Schwarzschild-radius black holes. The so... |
gr-qc/9711031 | Jerzy Lewandowski | Abhay Ashtekar and Jerzy Lewandowski | Quantum Theory of Geometry II: Volume operators | Latex, 3 figures | Adv.Theor.Math.Phys. 1 (1998) 388-429 | null | null | gr-qc hep-th | null | A functional calculus on the space of (generalized) connections was recently
introduced without any reference to a background metric. It is used to continue
the exploration of the quantum Riemannian geometry. Operators corresponding to
volume of three-dimensional regions are regularized rigorously. It is shown
that t... | [
{
"created": "Mon, 10 Nov 1997 17:21:11 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Lewandowski",
"Jerzy",
""
]
] | A functional calculus on the space of (generalized) connections was recently introduced without any reference to a background metric. It is used to continue the exploration of the quantum Riemannian geometry. Operators corresponding to volume of three-dimensional regions are regularized rigorously. It is shown that the... |
gr-qc/0212118 | Simon DeDeo | Simon DeDeo and J. Richard Gott III | An Eternal Time Machine in 2+1 Dimensional anti-de Sitter Space | 7 pages, 4 figures. Published in Physical Review D | Phys.Rev.D66:084020,2002; Erratum-ibid.D67:069902,2003 | 10.1103/PhysRevD.66.084020 10.1103/PhysRevD.67.069902 | null | gr-qc | null | 2+1 dimensional anti-de Sitter space has been the subject of much recent
investigation. Studies of the behaviour of point particles in this space have
given us a greater understanding of the BTZ black hole solutions produced by
topological identification of adS isometries. In this paper, we present a new
configuratio... | [
{
"created": "Sat, 28 Dec 2002 20:16:26 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"DeDeo",
"Simon",
""
],
[
"Gott",
"J. Richard",
"III"
]
] | 2+1 dimensional anti-de Sitter space has been the subject of much recent investigation. Studies of the behaviour of point particles in this space have given us a greater understanding of the BTZ black hole solutions produced by topological identification of adS isometries. In this paper, we present a new configuration ... |
0711.1150 | Yuuiti Sendouda | Nathalie Deruelle, Misao Sasaki, Yuuiti Sendouda | Junction Conditions in f(R) Theories of Gravity | 18 pages | Prog.Theor.Phys.119:237-251,2008 | 10.1143/PTP.119.237 | YITP-07-76 | gr-qc astro-ph hep-th | null | Taking advantage of the conformal equivalence of f(R) theories of gravity
with General Relativity coupled to a scalar field we generalize the Israel
junction conditions for this class of theories by direct integration of the
field equations. We suggest a specific non-minimal coupling of matter to
gravity which opens ... | [
{
"created": "Wed, 7 Nov 2007 20:22:33 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Deruelle",
"Nathalie",
""
],
[
"Sasaki",
"Misao",
""
],
[
"Sendouda",
"Yuuiti",
""
]
] | Taking advantage of the conformal equivalence of f(R) theories of gravity with General Relativity coupled to a scalar field we generalize the Israel junction conditions for this class of theories by direct integration of the field equations. We suggest a specific non-minimal coupling of matter to gravity which opens th... |
gr-qc/0703021 | Morgan Le Delliou | Morgan Le Delliou (CFTC) | Probing Dynamical Dark Energy with Press-Schechter Mass Functions | submitted to the Proceedings of the 11th Marcel Grossmann Meeting,
MG11, Berlin, Germany, July 23-29, 2006 (2007) to be published | null | 10.1142/9789812834300_0262 | null | gr-qc astro-ph hep-th | null | Measurement of accelerated expansion in the Universe led to propose a new
cosmic fluid as its cause: dark energy. Its various incarnations offer a wealth
of models whose relevance it is important to discriminate via contacts with
observations. I will present my investigations on the influence of dynamical
dark energy... | [
{
"created": "Sun, 4 Mar 2007 07:58:58 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Delliou",
"Morgan Le",
"",
"CFTC"
]
] | Measurement of accelerated expansion in the Universe led to propose a new cosmic fluid as its cause: dark energy. Its various incarnations offer a wealth of models whose relevance it is important to discriminate via contacts with observations. I will present my investigations on the influence of dynamical dark energy m... |
1106.0549 | Wenbiao Liu | Xiao-Xiong Zeng, Shi-Wei Zhou, Wen-Biao Liu | Landauer transport model for Hawking radiation from a Reissner-Nordstrom
black hole | null | null | 10.1088/1674-1056/21/9/090402 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recent work of Nation et al in which Hawking radiation energy and entropy
flow from a black hole can be regarded as a one-dimensional (1D) Landauer
transport process is extended to the case of a Reissner-Nordstrom (RN) black
hole. It is found that the flow of charge current can also be transported via a
1D quantu... | [
{
"created": "Fri, 3 Jun 2011 01:46:03 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Zeng",
"Xiao-Xiong",
""
],
[
"Zhou",
"Shi-Wei",
""
],
[
"Liu",
"Wen-Biao",
""
]
] | The recent work of Nation et al in which Hawking radiation energy and entropy flow from a black hole can be regarded as a one-dimensional (1D) Landauer transport process is extended to the case of a Reissner-Nordstrom (RN) black hole. It is found that the flow of charge current can also be transported via a 1D quantum ... |
0903.1668 | Paolo Bonifacio | Paolo M. Bonifacio, Charles H.-T. Wang, J. Tito Mendonca, Robert
Bingham | Dephasing of a non-relativistic quantum particle due to a conformally
fluctuating spacetime | 30 pages, 4 figures; to appear in Class. Quantum Grav. (2009) | Class.Quant.Grav.26:145013,2009 | 10.1088/0264-9381/26/14/145013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the dephasing suffered by a nonrelativistic quantum particle
within a conformally fluctuating spacetime geometry. Starting from a minimally
coupled massive Klein-Gordon field, the low velocity limit yields an effective
Schrodinger equation where the wave function couples to gravity through an
effective... | [
{
"created": "Tue, 10 Mar 2009 01:19:20 GMT",
"version": "v1"
}
] | 2009-07-24 | [
[
"Bonifacio",
"Paolo M.",
""
],
[
"Wang",
"Charles H. -T.",
""
],
[
"Mendonca",
"J. Tito",
""
],
[
"Bingham",
"Robert",
""
]
] | We investigate the dephasing suffered by a nonrelativistic quantum particle within a conformally fluctuating spacetime geometry. Starting from a minimally coupled massive Klein-Gordon field, the low velocity limit yields an effective Schrodinger equation where the wave function couples to gravity through an effective n... |
1211.3688 | Lorenzo Iorio | Lorenzo Iorio | Constraints on a MOND effect for isolated aspherical systems in deep
Newtonian regime from orbital motions | LaTex, 23 pages, 1 figure, 1 table, 58 references. Matching the
version at press in Classical and Quantum Gravity (CQG) | Class. Quant. Gravit..30:165018,2013 | 10.1088/0264-9381/30/16/165018 | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Non-spherical systems described by MOND theories of modified gravity arising
from generalizations of the Poisson equations are affected by a MONDian
extra-quadrupolar potential \phi_M even if they are isolated and they are in
deep Newtonian regime. In general MOND theories quickly approaching Newtonian
dynamics for a... | [
{
"created": "Wed, 7 Nov 2012 16:18:05 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Mar 2013 16:11:13 GMT",
"version": "v2"
},
{
"created": "Thu, 7 Mar 2013 14:09:49 GMT",
"version": "v3"
},
{
"created": "Wed, 3 Jul 2013 17:15:04 GMT",
"version": "v4"
},
{
"creat... | 2013-07-30 | [
[
"Iorio",
"Lorenzo",
""
]
] | Non-spherical systems described by MOND theories of modified gravity arising from generalizations of the Poisson equations are affected by a MONDian extra-quadrupolar potential \phi_M even if they are isolated and they are in deep Newtonian regime. In general MOND theories quickly approaching Newtonian dynamics for acc... |
1910.05663 | Adam Lewis | Adam G. M. Lewis | Hadamard Renormalization of a 2-Dimensional Dirac Field | 8 pages. A few corrections made, and a new operator is now
renormalized | Phys. Rev. D 101, 125019 (2020) | 10.1103/PhysRevD.101.125019 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hadamard renormalization procedure is applied to a free, massive Dirac
field $\psi$ on a 2 dimensional Lorentzian spacetime. This yields the
state-independent divergent terms in the Hadamard bispinor $G^{(1)}(x, x') =
\frac{1}{2} \left\langle \left[ \bar{\psi}(x'), \psi(x) \right] \right\rangle$
as $x$ and $x'$ a... | [
{
"created": "Sun, 13 Oct 2019 00:34:07 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Oct 2019 18:16:37 GMT",
"version": "v2"
},
{
"created": "Sat, 7 Mar 2020 21:33:32 GMT",
"version": "v3"
}
] | 2020-07-01 | [
[
"Lewis",
"Adam G. M.",
""
]
] | The Hadamard renormalization procedure is applied to a free, massive Dirac field $\psi$ on a 2 dimensional Lorentzian spacetime. This yields the state-independent divergent terms in the Hadamard bispinor $G^{(1)}(x, x') = \frac{1}{2} \left\langle \left[ \bar{\psi}(x'), \psi(x) \right] \right\rangle$ as $x$ and $x'$ are... |
2308.00267 | Jin Saito | Jin Saito and Tsutomu Kobayashi | Black hole perturbations in spatially covariant gravity with just two
tensorial degrees of freedom | 15pages, 4figures, | Phys. Rev. D 108, 104063 (2023) | 10.1103/PhysRevD.108.104063 | RUP-23-14 | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study linear perturbations around a static and spherically symmetric black
hole solution in spatially covariant gravity with just two tensorial degrees of
freedom. In this theory, gravity modification is characterized by a single
time-dependent function that appears in the coefficient of $K^2$ in the action,
where... | [
{
"created": "Tue, 1 Aug 2023 04:00:42 GMT",
"version": "v1"
}
] | 2024-02-20 | [
[
"Saito",
"Jin",
""
],
[
"Kobayashi",
"Tsutomu",
""
]
] | We study linear perturbations around a static and spherically symmetric black hole solution in spatially covariant gravity with just two tensorial degrees of freedom. In this theory, gravity modification is characterized by a single time-dependent function that appears in the coefficient of $K^2$ in the action, where $... |
2103.02444 | Mir Faizal | Salman Sajad Wani, Tsou Sheung Tsun, Mir Faizal | Dualized Gravity beyond Linear Approximation | 16 pages | Eur. Phys. J. C 82, 8, 751, (2022) | 10.1140/epjc/s10052-022-10550-3 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We will construct a loop space formalism for general relativity, and
construct the Polyakov variables as connections for such a loop space. We will
use these Polyakov variables to construct a dual theory of gravity beyond
linear approximation. It will be demonstrated that this loop space duality
reduces to the Hodge ... | [
{
"created": "Tue, 2 Mar 2021 09:15:57 GMT",
"version": "v1"
}
] | 2022-09-21 | [
[
"Wani",
"Salman Sajad",
""
],
[
"Tsun",
"Tsou Sheung",
""
],
[
"Faizal",
"Mir",
""
]
] | We will construct a loop space formalism for general relativity, and construct the Polyakov variables as connections for such a loop space. We will use these Polyakov variables to construct a dual theory of gravity beyond linear approximation. It will be demonstrated that this loop space duality reduces to the Hodge du... |
gr-qc/0612106 | Ying-Qiu Gu | Ying-Qiu Gu | The Vierbein Formalism and Energy-Momentum Tensor of Spinors | 14 pages, no figure | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To study the coupling system of space-time and Fermions, we need the explicit
form of the energy-momentum tensor of spinors. The energy-momentum tensor is
closely related to the tetrad frames which cannot be uniquely determined by the
metric. This flexibility increases difficulties to derive the exact expression
and ... | [
{
"created": "Mon, 18 Dec 2006 05:59:36 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Apr 2009 13:10:59 GMT",
"version": "v2"
},
{
"created": "Mon, 22 May 2017 16:39:59 GMT",
"version": "v3"
},
{
"created": "Thu, 10 Aug 2017 04:43:46 GMT",
"version": "v4"
},
{
"c... | 2017-12-08 | [
[
"Gu",
"Ying-Qiu",
""
]
] | To study the coupling system of space-time and Fermions, we need the explicit form of the energy-momentum tensor of spinors. The energy-momentum tensor is closely related to the tetrad frames which cannot be uniquely determined by the metric. This flexibility increases difficulties to derive the exact expression and ea... |
gr-qc/0210036 | Jose Natario | Jose Natario and Paul Tod | Linking, Legendrian linking and causality | 30 pages, 14 figures. arXiv admin note: substantial text overlap with
arXiv:gr-qc/0108061 | Proc.Lond.Math.Soc. 88 (2004) 251-272 | null | null | gr-qc math.DG math.GT math.SG | null | The set N of all null geodesics of a globally hyperbolic (d+1)-dimensional
spacetime (M,g) is naturally a smooth (2d-1)-dimensional contact manifold. The
sky of an event is the subset of N defined by all null geodesics through that
event, and is an embedded Legendrian submanifold of N diffeomorphic to a
(d-1)-dimensi... | [
{
"created": "Fri, 11 Oct 2002 17:14:03 GMT",
"version": "v1"
}
] | 2012-07-15 | [
[
"Natario",
"Jose",
""
],
[
"Tod",
"Paul",
""
]
] | The set N of all null geodesics of a globally hyperbolic (d+1)-dimensional spacetime (M,g) is naturally a smooth (2d-1)-dimensional contact manifold. The sky of an event is the subset of N defined by all null geodesics through that event, and is an embedded Legendrian submanifold of N diffeomorphic to a (d-1)-dimension... |
gr-qc/0105036 | J. B. Almeida | Jose B. Almeida | On the anomalies of gravity | 8 pages, submitted to GRG. Some corrections | null | null | null | gr-qc | null | The paper is based on the recently proposed 4-dimensional optical space
theory and draws some of its consequences for gravitation. Starting with the
discussion of central movement, the paper proceeds to establish the a metric
compatible with Newtonian mechanics which can be accommodated by the new theory
and finds a ... | [
{
"created": "Thu, 10 May 2001 08:25:24 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Jun 2001 13:21:34 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Almeida",
"Jose B.",
""
]
] | The paper is based on the recently proposed 4-dimensional optical space theory and draws some of its consequences for gravitation. Starting with the discussion of central movement, the paper proceeds to establish the a metric compatible with Newtonian mechanics which can be accommodated by the new theory and finds a co... |
gr-qc/0405113 | Hideki Maeda | Hideki Maeda and Tomohiro Harada | Kinematic self-similar solutions in general relativity | 29 pages, no figures, 1 table. This is a review for a part of the
book "Progress in General Relativity and Quantum Cosmology Research" (Nova
Science Publ.,2004) | null | null | WU-AP/185/04 | gr-qc astro-ph | null | The gravitational interaction is scale-free in both Newtonian gravity and
general theory of relativity. The concept of self-similarity arises from this
nature. Self-similar solutions reproduce themselves as the scale changes. This
property results in great simplification of the governing partial differential
equation... | [
{
"created": "Thu, 20 May 2004 08:38:06 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Maeda",
"Hideki",
""
],
[
"Harada",
"Tomohiro",
""
]
] | The gravitational interaction is scale-free in both Newtonian gravity and general theory of relativity. The concept of self-similarity arises from this nature. Self-similar solutions reproduce themselves as the scale changes. This property results in great simplification of the governing partial differential equations.... |
gr-qc/0303029 | Bahram Mashhoon | Bahram Mashhoon | The Hypothesis of Locality and its Limitations | LaTeX file, no figures, 14 pages, to appear in: "Relativity in
Rotating Frames", edited by G. Rizzi and M.L. Ruggiero (Kluwer Academic
Publishers, Dordrecht, 2003) | null | null | null | gr-qc astro-ph | null | The hypothesis of locality, its origin and consequences are discussed. This
supposition is necessary for establishing the local spacetime frame of
accelerated observers; in this connection, the measurement of length in a
rotating system is considered in detail. Various limitations of the hypothesis
of locality are ex... | [
{
"created": "Fri, 7 Mar 2003 05:15:52 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mashhoon",
"Bahram",
""
]
] | The hypothesis of locality, its origin and consequences are discussed. This supposition is necessary for establishing the local spacetime frame of accelerated observers; in this connection, the measurement of length in a rotating system is considered in detail. Various limitations of the hypothesis of locality are exam... |
1811.08213 | Alexander Kamenshchik | Alexander Yu. Kamenshchik, Ekaterina O. Pozdeeva, Alexei A.
Starobinsky, Alessandro Tronconi, Tereza Vardanyan, Giovanni Venturi, Sergey
Yu. Vernov | Duality between static spherically or hyperbolically symmetric solutions
and cosmological solutions in scalar-tensor gravity | The final version, published in Physical Review D, the title is
changed and some references and comments are added | Phys. Rev. D 98, 124028 (2018) | 10.1103/PhysRevD.98.124028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study static spherically and hyperbolically symmetric solutions of the
Einstein equations in the presence of a conformally coupled scalar field and
compare them with those in the space filled with a minimally coupled scalar
field. We then study the Kantowski-Sachs cosmological solutions, which are
connected with t... | [
{
"created": "Tue, 20 Nov 2018 12:40:22 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Dec 2018 15:17:33 GMT",
"version": "v2"
}
] | 2018-12-26 | [
[
"Kamenshchik",
"Alexander Yu.",
""
],
[
"Pozdeeva",
"Ekaterina O.",
""
],
[
"Starobinsky",
"Alexei A.",
""
],
[
"Tronconi",
"Alessandro",
""
],
[
"Vardanyan",
"Tereza",
""
],
[
"Venturi",
"Giovanni",
""
],
[
"Verno... | We study static spherically and hyperbolically symmetric solutions of the Einstein equations in the presence of a conformally coupled scalar field and compare them with those in the space filled with a minimally coupled scalar field. We then study the Kantowski-Sachs cosmological solutions, which are connected with the... |
2006.04360 | Nicola Maggiore | Giulio Gambuti and Nicola Maggiore | A note on Harmonic Gauge(s) in Massive Gravity | 11 pages | Physics Letters B 807 (2020) 135530 | 10.1016/j.physletb.2020.135530 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider the harmonic gauge condition in linearized gravity, seen as a
gauge theory for a symmetric tensor field. Once the harmonic gauge condition is
implemented, as customary, according to the Faddeev-Popov procedure, the gauge
fixed action still depends on one gauge parameter. Consequently, the harmonic
gauge a... | [
{
"created": "Mon, 8 Jun 2020 05:22:26 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Jun 2020 10:53:38 GMT",
"version": "v2"
}
] | 2020-06-23 | [
[
"Gambuti",
"Giulio",
""
],
[
"Maggiore",
"Nicola",
""
]
] | We consider the harmonic gauge condition in linearized gravity, seen as a gauge theory for a symmetric tensor field. Once the harmonic gauge condition is implemented, as customary, according to the Faddeev-Popov procedure, the gauge fixed action still depends on one gauge parameter. Consequently, the harmonic gauge app... |
1409.4787 | Miguel Zilh\~ao | Miguel Zilh\~ao, Scott C. Noble, Manuela Campanelli, Yosef Zlochower | Resolving the relative influence of strong field spacetime dynamics and
MHD on circumbinary disk physics | 14 pages, 12 figures. v2: matches published version in PRD | null | 10.1103/PhysRevD.91.024034 | null | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we evolve magnetized and unmagnetized circumbinary accretion
disks around supermassive black hole binaries in the relativistic regime. We
use a post-Newtonian expansion to construct an analytical spacetime and
determine how the order of the post-Newtonian (PN) expansion affects the
dynamics of the gas. ... | [
{
"created": "Tue, 16 Sep 2014 20:10:08 GMT",
"version": "v1"
},
{
"created": "Sat, 31 Jan 2015 17:40:55 GMT",
"version": "v2"
}
] | 2015-02-03 | [
[
"Zilhão",
"Miguel",
""
],
[
"Noble",
"Scott C.",
""
],
[
"Campanelli",
"Manuela",
""
],
[
"Zlochower",
"Yosef",
""
]
] | In this paper we evolve magnetized and unmagnetized circumbinary accretion disks around supermassive black hole binaries in the relativistic regime. We use a post-Newtonian expansion to construct an analytical spacetime and determine how the order of the post-Newtonian (PN) expansion affects the dynamics of the gas. We... |
gr-qc/9704069 | Giacomo Giampieri | G.Giampieri | On the Antenna Pattern of an Orbiting Interferometer | RevTeX, 17 pages, 11 ps figures. To appear in MNRAS | null | 10.1093/mnras/289.1.185 | QMW-AU-97006 | gr-qc | null | The response of an interferometer changing its orientation with respect to a
fixed reference frame is given in terms of the beam-pattern factors and the
polarization-averaged antenna power pattern.
| [
{
"created": "Thu, 24 Apr 1997 17:30:17 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Giampieri",
"G.",
""
]
] | The response of an interferometer changing its orientation with respect to a fixed reference frame is given in terms of the beam-pattern factors and the polarization-averaged antenna power pattern. |
0704.1224 | Alexei Zayats | Alexander B. Balakin, Sergey V. Sushkov, Alexei E. Zayats | Non-minimal Wu-Yang wormhole | 9 pages, 2 figures, typos corrected, 2 references added | Phys.Rev.D75:084042,2007 | 10.1103/PhysRevD.75.084042 | null | gr-qc astro-ph hep-ph hep-th | null | We discuss exact solutions of three-parameter non-minimal Einstein-Yang-Mills
model, which describe the wormholes of a new type. These wormholes are
considered to be supported by SU(2)-symmetric Yang-Mills field, non-minimally
coupled to gravity, the Wu-Yang ansatz for the gauge field being used. We
distinguish betwe... | [
{
"created": "Tue, 10 Apr 2007 12:30:02 GMT",
"version": "v1"
},
{
"created": "Wed, 2 May 2007 11:52:42 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Balakin",
"Alexander B.",
""
],
[
"Sushkov",
"Sergey V.",
""
],
[
"Zayats",
"Alexei E.",
""
]
] | We discuss exact solutions of three-parameter non-minimal Einstein-Yang-Mills model, which describe the wormholes of a new type. These wormholes are considered to be supported by SU(2)-symmetric Yang-Mills field, non-minimally coupled to gravity, the Wu-Yang ansatz for the gauge field being used. We distinguish between... |
1611.07531 | LVC Publications | The LIGO Scientific Collaboration and the Virgo Collaboration: B. P.
Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C.
Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M.
Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith,
B. Allen, A. All... | Effects of waveform model systematics on the interpretation of GW150914 | 29 pages, 9 figures | Class. Quantum Grav. 34 (2017) 104002 | 10.1088/1361-6382/aa6854 | P1500259 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Parameter estimates of GW150914 were obtained using Bayesian inference, based
on three semi-analytic waveform models for binary black hole coalescences.
These waveform models differ from each other in their treatment of black hole
spins, and all three models make some simplifying assumptions, notably to
neglect sub-d... | [
{
"created": "Tue, 22 Nov 2016 21:00:24 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Apr 2017 14:38:24 GMT",
"version": "v2"
}
] | 2017-04-19 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Abernathy",
"M. R.",
""
],
[
"Acernese",
"F... | Parameter estimates of GW150914 were obtained using Bayesian inference, based on three semi-analytic waveform models for binary black hole coalescences. These waveform models differ from each other in their treatment of black hole spins, and all three models make some simplifying assumptions, notably to neglect sub-dom... |
gr-qc/0506051 | Fernando C. Lombardo | Fernando C. Lombardo and Diana Lopez Nacir | Decoherence during Inflation: the generation of classical
inhomogeneities | 17 pages, 15 figures. To appear in Phys. Rev. D | Phys.Rev. D72 (2005) 063506 | 10.1103/PhysRevD.72.063506 | null | gr-qc astro-ph hep-ph hep-th | null | We show how the quantum to classical transition of the cosmological
fluctuations produced during inflation can be described by means of the
influence functional and the master equation. We split the inflaton field into
the system-field (long-wavelength modes), and the environment, represented by
its own short-wavelen... | [
{
"created": "Wed, 8 Jun 2005 20:33:23 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Aug 2005 19:24:49 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Aug 2005 16:02:26 GMT",
"version": "v3"
}
] | 2016-08-31 | [
[
"Lombardo",
"Fernando C.",
""
],
[
"Nacir",
"Diana Lopez",
""
]
] | We show how the quantum to classical transition of the cosmological fluctuations produced during inflation can be described by means of the influence functional and the master equation. We split the inflaton field into the system-field (long-wavelength modes), and the environment, represented by its own short-wavelengt... |
0912.5154 | Branislav Cvetkovi\'c | M. Blagojevi\'c and B. Cvetkovi\'c | Asymptotic Chern-Simons formulation of spacelike stretched AdS gravity | LATEX, 21 pages; v2: improved presentation, section 6 extended, two
references added | Class.Quant.Grav.27:185022,2010 | 10.1088/0264-9381/27/18/185022 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the asymptotic structures of topologically massive gravity in
the spacelike stretched AdS sector and an $SL(2,R)\times U(1)$ Chern-Simons
gauge theory can be identified by adopting a natural correspondence between
their fields and coupling constants.
| [
{
"created": "Mon, 28 Dec 2009 11:03:49 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Aug 2010 10:06:28 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Blagojević",
"M.",
""
],
[
"Cvetković",
"B.",
""
]
] | We show that the asymptotic structures of topologically massive gravity in the spacelike stretched AdS sector and an $SL(2,R)\times U(1)$ Chern-Simons gauge theory can be identified by adopting a natural correspondence between their fields and coupling constants. |
2005.09728 | Roxana Rosca-Mead | Roxana Rosca-Mead, Ulrich Sperhake, Christopher J. Moore, Michalis
Agathos, Davide Gerosa and Christian D. Ott | Core collapse in massive scalar-tensor gravity | 26 pages, 19 figures, to match published version in Phys.Rev.D | Phys. Rev. D 102, 044010 (2020) | 10.1103/PhysRevD.102.044010 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper provides an extended exploration of the inverse-chirp
gravitational-wave signals from stellar collapse in massive scalar-tensor
gravity reported in [Phys. Rev. Lett. {\bf 119}, 201103]. We systematically
explore the parameter space that characterizes the progenitor stars, the
equation of state and the scal... | [
{
"created": "Tue, 19 May 2020 19:57:50 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Sep 2020 13:58:58 GMT",
"version": "v2"
}
] | 2020-09-16 | [
[
"Rosca-Mead",
"Roxana",
""
],
[
"Sperhake",
"Ulrich",
""
],
[
"Moore",
"Christopher J.",
""
],
[
"Agathos",
"Michalis",
""
],
[
"Gerosa",
"Davide",
""
],
[
"Ott",
"Christian D.",
""
]
] | This paper provides an extended exploration of the inverse-chirp gravitational-wave signals from stellar collapse in massive scalar-tensor gravity reported in [Phys. Rev. Lett. {\bf 119}, 201103]. We systematically explore the parameter space that characterizes the progenitor stars, the equation of state and the scalar... |
2310.10968 | Osvaldo Pablo Santillan | L. Lanosa and O. Santillan | Peculiarities for domain walls in Taub coordinates | 19 pages and 3 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present letter the infinite domain wall geometry in GR
\cite{vilenkin1}-\cite{ipser} is reconsidered in Taub coordinates \cite{taub}.
The use of these coordinates makes explicit that the regions between the
horizons and the wall and the outer ones are flat. By use of these coordinates,
it is suggested that poi... | [
{
"created": "Tue, 17 Oct 2023 03:29:14 GMT",
"version": "v1"
}
] | 2023-10-18 | [
[
"Lanosa",
"L.",
""
],
[
"Santillan",
"O.",
""
]
] | In the present letter the infinite domain wall geometry in GR \cite{vilenkin1}-\cite{ipser} is reconsidered in Taub coordinates \cite{taub}. The use of these coordinates makes explicit that the regions between the horizons and the wall and the outer ones are flat. By use of these coordinates, it is suggested that point... |
gr-qc/9702018 | Leonid Grishchuk | L. P. Grishchuk and J\'er\^ome Martin | Best Unbiased Estimates for the Microwave Background Anisotropies | 26 pages, revtex; minor modifications, 8 new references, to be
published in Phys. Rev. D | Phys. Rev. D 56, 1924 (1997) | 10.1103/PhysRevD.56.1924 | null | gr-qc astro-ph hep-ph | null | It is likely that the observed distribution of the microwave background
temperature over the sky is only one realization of the underlying random
process associated with cosmological perturbations of quantum-mechanical
origin. If so, one needs to derive the parameters of the random process, as
accurately as possible,... | [
{
"created": "Mon, 10 Feb 1997 17:15:41 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Jun 1997 10:48:37 GMT",
"version": "v2"
}
] | 2016-08-24 | [
[
"Grishchuk",
"L. P.",
""
],
[
"Martin",
"Jérôme",
""
]
] | It is likely that the observed distribution of the microwave background temperature over the sky is only one realization of the underlying random process associated with cosmological perturbations of quantum-mechanical origin. If so, one needs to derive the parameters of the random process, as accurately as possible, f... |
0711.0250 | K G Arun | K G Arun, Luc Blanchet, Bala R Iyer and Moh'd S S Qusailah | Tail effects in the third post-Newtonian gravitational wave energy flux
of compact binaries in quasi-elliptical orbits | 32 pages, 10 figures. Minor changes in text throughout. Matches the
published version | Phys. Rev. D 77, 064034 (2008) | 10.1103/PhysRevD.77.064034 | null | gr-qc | null | The far-zone flux of energy contains hereditary (tail) contributions that
depend on the entire past history of the source. Using the multipolar
post-Minkowskian wave generation formalism, we propose and implement a
semi-analytical method in the frequency domain to compute these contributions
from the inspiral phase o... | [
{
"created": "Fri, 2 Nov 2007 13:07:09 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Apr 2008 21:46:57 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Arun",
"K G",
""
],
[
"Blanchet",
"Luc",
""
],
[
"Iyer",
"Bala R",
""
],
[
"Qusailah",
"Moh'd S S",
""
]
] | The far-zone flux of energy contains hereditary (tail) contributions that depend on the entire past history of the source. Using the multipolar post-Minkowskian wave generation formalism, we propose and implement a semi-analytical method in the frequency domain to compute these contributions from the inspiral phase of ... |
gr-qc/0609132 | Samad Khakshournia | S. Ghassemi, S. Khakshournia, and R. Mansouri | Thick planar domain wall: its thin wall limit and dynamics | 11 pages, to appear in IJMPD | Int.J.Mod.Phys.D16:629-640,2007 | 10.1142/S0218271807009395 | null | gr-qc | null | We consider a planar gravitating thick domain wall of the $\lambda \phi^4$
theory as a spacetime with finite thickness glued to two vacuum spacetimes on
each side of it. Darmois junction conditions written on the boundaries of the
thick wall with the embedding spacetimes reproduce the Israel junction
condition across... | [
{
"created": "Thu, 28 Sep 2006 10:09:43 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Ghassemi",
"S.",
""
],
[
"Khakshournia",
"S.",
""
],
[
"Mansouri",
"R.",
""
]
] | We consider a planar gravitating thick domain wall of the $\lambda \phi^4$ theory as a spacetime with finite thickness glued to two vacuum spacetimes on each side of it. Darmois junction conditions written on the boundaries of the thick wall with the embedding spacetimes reproduce the Israel junction condition across t... |
1207.6810 | Marcos Ramirez | Marcos A. Ramirez | Self-gravitating splitting thin shells | 18 pages, 3 figures | Class. Quantum Grav. 32 085005 (2015) | 10.1088/0264-9381/32/8/085005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we show that thin shells in spherically symmetric spacetimes,
whose matter content is described by a pair of non-interacting spherically
symmetric matter fields, generically exhibit instability against an
infinitesimal separation of its constituent fields. We give explicit examples
and construct solutio... | [
{
"created": "Sun, 29 Jul 2012 23:53:27 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Aug 2012 23:56:52 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Oct 2012 04:47:28 GMT",
"version": "v3"
},
{
"created": "Fri, 29 Aug 2014 23:07:17 GMT",
"version": "v4"
},
{
"c... | 2015-04-01 | [
[
"Ramirez",
"Marcos A.",
""
]
] | In this paper we show that thin shells in spherically symmetric spacetimes, whose matter content is described by a pair of non-interacting spherically symmetric matter fields, generically exhibit instability against an infinitesimal separation of its constituent fields. We give explicit examples and construct solutions... |
1307.8086 | Huan Yang | Huan Yang, Aaron Zimmerman, An{\i}l Zengino\u{g}lu, Fan Zhang,
Emanuele Berti and Yanbei Chen | Quasinormal modes of nearly extremal Kerr spacetimes: spectrum
bifurcation and power-law ringdown | 23 pages, 15 figures | Phys. Rev. D 88, 044047 (2013) | 10.1103/PhysRevD.88.044047 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide an in-depth investigation of quasinormal-mode oscillations of Kerr
black holes with nearly extremal angular momenta. We first discuss in greater
detail the two distinct types of quasinormal mode frequencies presented in a
recent paper (arXiv:1212.3271). One set of modes, that we call "zero-damping
modes", ... | [
{
"created": "Tue, 30 Jul 2013 19:09:02 GMT",
"version": "v1"
}
] | 2013-08-28 | [
[
"Yang",
"Huan",
""
],
[
"Zimmerman",
"Aaron",
""
],
[
"Zenginoğlu",
"Anıl",
""
],
[
"Zhang",
"Fan",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Chen",
"Yanbei",
""
]
] | We provide an in-depth investigation of quasinormal-mode oscillations of Kerr black holes with nearly extremal angular momenta. We first discuss in greater detail the two distinct types of quasinormal mode frequencies presented in a recent paper (arXiv:1212.3271). One set of modes, that we call "zero-damping modes", ha... |
1009.0608 | Fumihiko Ishiyama | Fumihiko Ishiyama, Ryutaro Takahashi | The bounce hardness index of gravitational waves | 13 pages, 7figures | Class.Quant.Grav.27:245021,2010 | 10.1088/0264-9381/27/24/245021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a method of mode analysis to search for signals with frequency
evolution and limited duration in a given data stream. Our method is a natural
expansion of the Fourier analysis, and we can obtain the information about
frequency evolution with high frequency precision and high time resolution.
Applications o... | [
{
"created": "Fri, 3 Sep 2010 08:55:37 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Dec 2010 07:21:12 GMT",
"version": "v2"
}
] | 2024-03-26 | [
[
"Ishiyama",
"Fumihiko",
""
],
[
"Takahashi",
"Ryutaro",
""
]
] | We present a method of mode analysis to search for signals with frequency evolution and limited duration in a given data stream. Our method is a natural expansion of the Fourier analysis, and we can obtain the information about frequency evolution with high frequency precision and high time resolution. Applications of ... |
0912.4001 | Niall \'O Murchadha | Niall O Murchadha, Roh-Suan Tung, Naqing Xie, Edward Malec | The Brown-York mass and the Thorne hoop conjecture | 4 pages; accepted for publication in Physical Review Letters | Phys.Rev.Lett.104:041101,2010 | 10.1103/PhysRevLett.104.041101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Thorne hoop conjecture is an attempt to make precise the notion that
gravitational collapse occurs if enough energy is compressed into a small
enough volume, with the `size' being defined by the circumference. We can make
a precise statement of this form, in spherical symmetry, using the Brown-York
mass as our me... | [
{
"created": "Sun, 20 Dec 2009 11:55:37 GMT",
"version": "v1"
}
] | 2010-11-11 | [
[
"Murchadha",
"Niall O",
""
],
[
"Tung",
"Roh-Suan",
""
],
[
"Xie",
"Naqing",
""
],
[
"Malec",
"Edward",
""
]
] | The Thorne hoop conjecture is an attempt to make precise the notion that gravitational collapse occurs if enough energy is compressed into a small enough volume, with the `size' being defined by the circumference. We can make a precise statement of this form, in spherical symmetry, using the Brown-York mass as our meas... |
1406.7661 | Leonardo Gualtieri | Gr\'egoire Martinon, Andrea Maselli, Leonardo Gualtieri, Valeria
Ferrari | Rotating proto-neutron stars: spin evolution, maximum mass and I-Love-Q
relations | 15 pages, 9 figures, 7 tables; minor changes, and extended discussion
on the I-Love-Q relations | null | 10.1103/PhysRevD.90.064026 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Shortly after its birth in a gravitational collapse, a proto-neutron star
enters in a phase of quasi-stationary evolution characterized by large
gradients of the thermodynamical variables and intense neutrino emission. In
few tens of seconds the gradients smooth out while the star contracts and cools
down, until it b... | [
{
"created": "Mon, 30 Jun 2014 10:44:12 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Jul 2014 20:30:38 GMT",
"version": "v2"
}
] | 2015-06-22 | [
[
"Martinon",
"Grégoire",
""
],
[
"Maselli",
"Andrea",
""
],
[
"Gualtieri",
"Leonardo",
""
],
[
"Ferrari",
"Valeria",
""
]
] | Shortly after its birth in a gravitational collapse, a proto-neutron star enters in a phase of quasi-stationary evolution characterized by large gradients of the thermodynamical variables and intense neutrino emission. In few tens of seconds the gradients smooth out while the star contracts and cools down, until it bec... |
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