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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2102.03211 | Ion I. Cotaescu | Ion I. Cotaescu | Kinematics in spatially flat FLRW space-time | 20 pages | null | 10.1088/1674-1137/ac1576 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The kinematics on spatially flat FLRW space-times is presented for the first
time in co-moving local charts with physical coordinates, i. e. the cosmic time
and Painlev\' e-type Cartesian space coordinates. It is shown that there exists
a conserved momentum which determines the form of the covariant four-momentum
on ... | [
{
"created": "Fri, 5 Feb 2021 14:54:58 GMT",
"version": "v1"
}
] | 2021-10-27 | [
[
"Cotaescu",
"Ion I.",
""
]
] | The kinematics on spatially flat FLRW space-times is presented for the first time in co-moving local charts with physical coordinates, i. e. the cosmic time and Painlev\' e-type Cartesian space coordinates. It is shown that there exists a conserved momentum which determines the form of the covariant four-momentum on ge... |
2306.11451 | Javier Relancio | F. Mercati, J.J. Relancio | Relative Locality in curved spacetimes and event horizons | 20 pages, 3 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the past decade, significant efforts have been devoted to the study of
Relative Locality, which aims to generalize the kinematics of relativistic
particles to a nonlocal framework by introducing a nontrivial geometry for
momentum space. This paper builds upon a recent proposal to extend the theory
to curved spacet... | [
{
"created": "Tue, 20 Jun 2023 11:09:11 GMT",
"version": "v1"
}
] | 2023-06-21 | [
[
"Mercati",
"F.",
""
],
[
"Relancio",
"J. J.",
""
]
] | In the past decade, significant efforts have been devoted to the study of Relative Locality, which aims to generalize the kinematics of relativistic particles to a nonlocal framework by introducing a nontrivial geometry for momentum space. This paper builds upon a recent proposal to extend the theory to curved spacetim... |
2308.00302 | Buddhadeb Ghosh | Abhijit Let, Arunoday Sarkar, Chitrak Sarkar and Buddhadeb Ghosh | Non-perturbative stabilization of two K\"ahler moduli in type-IIB/F
theory and the inflaton potential | 7 pages, 4 figures and 3 tables | 2023 EPL 143 39001 | 10.1209/0295-5075/acec09 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider a combination of perturbative and non-perturbative corrections in
K\"ahler moduli stabilizations in the configuration of three magnetised
intersecting D7 branes in the type-IIB/F theory, compactified on the 6d T^6/Z_N
orbifold of Calabi-Yau three-fold (CY_3). Two of the K\"ahler moduli are
stabilized non-... | [
{
"created": "Tue, 1 Aug 2023 05:50:10 GMT",
"version": "v1"
}
] | 2023-08-11 | [
[
"Let",
"Abhijit",
""
],
[
"Sarkar",
"Arunoday",
""
],
[
"Sarkar",
"Chitrak",
""
],
[
"Ghosh",
"Buddhadeb",
""
]
] | We consider a combination of perturbative and non-perturbative corrections in K\"ahler moduli stabilizations in the configuration of three magnetised intersecting D7 branes in the type-IIB/F theory, compactified on the 6d T^6/Z_N orbifold of Calabi-Yau three-fold (CY_3). Two of the K\"ahler moduli are stabilized non-pe... |
2308.03926 | Ali Kaya | Ali Kaya | Big-Bang is a Boundary Condition | v2: 16 pages, Revtex 4-1, to appear in Annals of Physics | null | 10.1016/j.aop.2023.169526 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There is a common expectation that the big-bang singularity must be resolved
in quantum gravity but it is not clear how this can be achieved. A major
obstacle here is the difficulty of interpreting wave-functions in quantum
gravity. The standard quantum mechanical framework requires a notion of time
evolution and a p... | [
{
"created": "Mon, 7 Aug 2023 22:06:13 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Nov 2023 17:46:11 GMT",
"version": "v2"
}
] | 2023-11-07 | [
[
"Kaya",
"Ali",
""
]
] | There is a common expectation that the big-bang singularity must be resolved in quantum gravity but it is not clear how this can be achieved. A major obstacle here is the difficulty of interpreting wave-functions in quantum gravity. The standard quantum mechanical framework requires a notion of time evolution and a pro... |
0902.1664 | David Garfinkle | David Garfinkle | Matters of Gravity, The Newsletter of the Topical Group in Gravitation
of the American Physical Society, Volume 33, Winter 2009 | 13 pages, latex | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | GGR News:
o GGR program at the APS meeting in Denver, by David Garfinkle
o we hear that ..., by David Garfinkle
o 400 years ago, by David Garfinkle
Conference reports:
o The 24th Texas Symposium on Relativistic Astrophysics, by Scott Hughes
o Loop Quantum Cosmology Workshop, by Parampreet Singh
| [
{
"created": "Mon, 9 Feb 2009 16:11:59 GMT",
"version": "v1"
}
] | 2009-02-11 | [
[
"Garfinkle",
"David",
""
]
] | GGR News: o GGR program at the APS meeting in Denver, by David Garfinkle o we hear that ..., by David Garfinkle o 400 years ago, by David Garfinkle Conference reports: o The 24th Texas Symposium on Relativistic Astrophysics, by Scott Hughes o Loop Quantum Cosmology Workshop, by Parampreet Singh |
1511.07935 | Xin-Zhou Li | Chao-jun Feng, Fei-fei Ge, Xin-zhou Li, Rui-hui Lin and Xiang-hua Zhai | Towards realistic $f(T)$ models with nonminimal torsion-matter coupling
extension | 12 pages, 5 figures | Phys. Rev. D 92 (2015) 104038 | 10.1103/PhysRevD.92.104038 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the observation data of SNeIa, CMB and BAO, we establish two concrete
$f(T)$ models with nonminimal torsion-matter coupling extension. We study in
detail the cosmological implication of our models and find they are successful
in describing the observation of the Universe, its large scale structure and
evolution... | [
{
"created": "Wed, 25 Nov 2015 02:19:07 GMT",
"version": "v1"
}
] | 2015-11-26 | [
[
"Feng",
"Chao-jun",
""
],
[
"Ge",
"Fei-fei",
""
],
[
"Li",
"Xin-zhou",
""
],
[
"Lin",
"Rui-hui",
""
],
[
"Zhai",
"Xiang-hua",
""
]
] | Using the observation data of SNeIa, CMB and BAO, we establish two concrete $f(T)$ models with nonminimal torsion-matter coupling extension. We study in detail the cosmological implication of our models and find they are successful in describing the observation of the Universe, its large scale structure and evolution. ... |
1112.5836 | Mariam Bouhmadi-Lopez | Moulay-Hicham Belkacemi, Mariam Bouhmadi-Lopez, Ahmed Errahmani, and
Taoufiq Ouali | The holographic induced gravity model with a Ricci dark energy:
smoothing the little rip and big rip through Gauss-Bonnet effects? | 11 pages, 8 figures. RevTex4-1. Comments and references added.
Version accepted in PRD | Phys. Rev. D 85, 083503 (2012) | 10.1103/PhysRevD.85.083503 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an holographic brane-world model of the Dvali-Gabadadze-Porrati
(DGP) scenario with and without a Gauss-Bonnet term (GB) in the bulk. We show
that an holographic dark energy component with the Ricci scale as the infra-red
cutoff can describe the late-time acceleration of the universe. In addition, we
show ... | [
{
"created": "Mon, 26 Dec 2011 10:31:45 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Mar 2012 14:03:33 GMT",
"version": "v2"
}
] | 2012-04-13 | [
[
"Belkacemi",
"Moulay-Hicham",
""
],
[
"Bouhmadi-Lopez",
"Mariam",
""
],
[
"Errahmani",
"Ahmed",
""
],
[
"Ouali",
"Taoufiq",
""
]
] | We present an holographic brane-world model of the Dvali-Gabadadze-Porrati (DGP) scenario with and without a Gauss-Bonnet term (GB) in the bulk. We show that an holographic dark energy component with the Ricci scale as the infra-red cutoff can describe the late-time acceleration of the universe. In addition, we show th... |
2207.14423 | Dicong Liang | Dicong Liang, Rui Xu, Xuchen Lu and Lijing Shao | Polarizations of Gravitational Waves in the Bumblebee Gravity Model | 16 pages, no figures | Phys. Rev. D 106 (2022) 124019 | 10.1103/PhysRevD.106.124019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lorentz violation modifies the dispersion relation of gravitational waves
(GWs), and induces birefringence and anisotropy in propagation. Our study shows
that Lorentz violation can also activate multiple polarizations of GWs. We use
the gauge invariants to investigate the polarizations of GWs in the bumblebee
gravity... | [
{
"created": "Fri, 29 Jul 2022 01:01:43 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Nov 2022 14:07:06 GMT",
"version": "v2"
}
] | 2022-12-20 | [
[
"Liang",
"Dicong",
""
],
[
"Xu",
"Rui",
""
],
[
"Lu",
"Xuchen",
""
],
[
"Shao",
"Lijing",
""
]
] | Lorentz violation modifies the dispersion relation of gravitational waves (GWs), and induces birefringence and anisotropy in propagation. Our study shows that Lorentz violation can also activate multiple polarizations of GWs. We use the gauge invariants to investigate the polarizations of GWs in the bumblebee gravity m... |
0901.3827 | Belinch\'on Jos\'e Antonio | Jos\'e Antonio Belinch\'on | Bianchi II with time varying constants. Self-similar approach | 10 pages. RevTeX4 | Astrophys.Space Sci.323:185-195,2009 | 10.1007/s10509-009-0050-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a perfect fluid Bianchi II models with time varying constants under
the self-similarity approach. In the first of the studied model, we consider
that only vary $G$ and $\Lambda.$ The obtained solution is more general that
the obtained one for the classical solution since it is valid for an equation
of state ... | [
{
"created": "Sat, 24 Jan 2009 11:45:55 GMT",
"version": "v1"
}
] | 2009-08-11 | [
[
"Belinchón",
"José Antonio",
""
]
] | We study a perfect fluid Bianchi II models with time varying constants under the self-similarity approach. In the first of the studied model, we consider that only vary $G$ and $\Lambda.$ The obtained solution is more general that the obtained one for the classical solution since it is valid for an equation of state $\... |
1712.04827 | Luigi Pilo | Marco Celoria, Denis Comelli, Luigi Pilo | Self-gravitating $\Lambda$-media | 17 pages+ 3 pdf figures. Expanded version published on JCAP | JCAP 1901 (2019) no.01, 057 | 10.1088/1475-7516/2019/01/057 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We address the question whether a medium featuring $p + \rho = 0$, dubbed
$\Lambda$- medium, has to be necessarily a cosmological constant. By using
effective field theory, we show that this is not the case for a class of media
comprising perfect fluids, solids and special super solids, providing an
explicit construc... | [
{
"created": "Wed, 13 Dec 2017 15:55:03 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Apr 2019 21:20:46 GMT",
"version": "v2"
}
] | 2019-04-16 | [
[
"Celoria",
"Marco",
""
],
[
"Comelli",
"Denis",
""
],
[
"Pilo",
"Luigi",
""
]
] | We address the question whether a medium featuring $p + \rho = 0$, dubbed $\Lambda$- medium, has to be necessarily a cosmological constant. By using effective field theory, we show that this is not the case for a class of media comprising perfect fluids, solids and special super solids, providing an explicit constructi... |
1807.09801 | Sourya Ray | David Kastor, Sourya Ray, Jennie Traschen | Black Hole Enthalpy and Scalar Fields | 24 pages | null | 10.1088/1361-6382/aaf663 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The mass of an AdS black hole represents its enthalpy, which in addition to
internal energy, generally includes the energy required to assemble the system
in its environment. In this paper, we consider black holes immersed in a more
complex environment, generated by a scalar field with an exponential potential.
In th... | [
{
"created": "Wed, 25 Jul 2018 18:03:35 GMT",
"version": "v1"
}
] | 2019-01-09 | [
[
"Kastor",
"David",
""
],
[
"Ray",
"Sourya",
""
],
[
"Traschen",
"Jennie",
""
]
] | The mass of an AdS black hole represents its enthalpy, which in addition to internal energy, generally includes the energy required to assemble the system in its environment. In this paper, we consider black holes immersed in a more complex environment, generated by a scalar field with an exponential potential. In the ... |
1802.00313 | Sayani Maity | Sayani Maity and Prabir Rudra | Gravitational Baryogenesis in Ho$\check{r}$ava-Lifshitz gravity | null | null | 10.1142/S0217732319502031 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we intend to address the matter-antimatter asymmetry via the
gravitational baryogenesis mechanism in the background of a quantum theory of
gravity. We investigate this mechanism under the framework of
Ho$\check{r}$ava-Lifshitz gravity. We will compute the baryon-to-entropy ratio
in the chosen framework a... | [
{
"created": "Wed, 31 Jan 2018 11:01:17 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Feb 2018 08:03:52 GMT",
"version": "v2"
}
] | 2019-10-02 | [
[
"Maity",
"Sayani",
""
],
[
"Rudra",
"Prabir",
""
]
] | In this work we intend to address the matter-antimatter asymmetry via the gravitational baryogenesis mechanism in the background of a quantum theory of gravity. We investigate this mechanism under the framework of Ho$\check{r}$ava-Lifshitz gravity. We will compute the baryon-to-entropy ratio in the chosen framework and... |
2304.02219 | Keita Takizawa | Keita Takizawa, Hideki Asada | Gravitational lens on a static optical constant-curvature background:
Its application to Weyl gravity model | 12 pages, 4 figures, the differences between the present result and
the previous literature clarified, title and text improved, accepted for PRD | null | null | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | This paper extends the de-Sitter/anti-de Sitter (dS/AdS) background method
based on the optical metric for gravitational lens [Phys. Rev. D 105, 084022
(2022)] to a static optical constant-curvature (SOCC) background. It is shown
that the exact lens equation on the SOCC background can be written in the same
form as t... | [
{
"created": "Wed, 5 Apr 2023 04:16:50 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Oct 2023 04:17:13 GMT",
"version": "v2"
}
] | 2023-10-30 | [
[
"Takizawa",
"Keita",
""
],
[
"Asada",
"Hideki",
""
]
] | This paper extends the de-Sitter/anti-de Sitter (dS/AdS) background method based on the optical metric for gravitational lens [Phys. Rev. D 105, 084022 (2022)] to a static optical constant-curvature (SOCC) background. It is shown that the exact lens equation on the SOCC background can be written in the same form as tha... |
gr-qc/9610069 | Carsten Gundlach | Carsten Gundlach | Echoing and scaling in Einstein-Yang-Mills critical collapse | 13 pages, Revtex, one important reference corrected | Phys.Rev. D55 (1997) 6002-6013 | 10.1103/PhysRevD.55.6002 | null | gr-qc | null | We confirm recent numerical results of echoing and mass scaling in the
gravitational collapse of a spherical Yang-Mills field by constructing the
critical solution and its perturbations as an eigenvalue problem. Because the
field equations are not scale-invariant, the Yang-Mills critical solution is
asymptotically, r... | [
{
"created": "Wed, 30 Oct 1996 19:01:15 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Nov 1996 15:58:06 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Gundlach",
"Carsten",
""
]
] | We confirm recent numerical results of echoing and mass scaling in the gravitational collapse of a spherical Yang-Mills field by constructing the critical solution and its perturbations as an eigenvalue problem. Because the field equations are not scale-invariant, the Yang-Mills critical solution is asymptotically, rat... |
1303.2471 | Miroslav Shaltev | Miroslav Shaltev and Reinhard Prix | Fully coherent follow-up of continuous gravitational-wave candidates | 12 pages, 5 figures | null | 10.1103/PhysRevD.87.084057 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The search for continuous gravitational waves from unknown isolated sources
is computationally limited due to the enormous parameter space that needs to be
covered and the weakness of the expected signals. Therefore semi-coherent
search strategies have been developed and applied in distributed computing
environments ... | [
{
"created": "Mon, 11 Mar 2013 10:11:02 GMT",
"version": "v1"
}
] | 2013-11-26 | [
[
"Shaltev",
"Miroslav",
""
],
[
"Prix",
"Reinhard",
""
]
] | The search for continuous gravitational waves from unknown isolated sources is computationally limited due to the enormous parameter space that needs to be covered and the weakness of the expected signals. Therefore semi-coherent search strategies have been developed and applied in distributed computing environments su... |
gr-qc/0404031 | Giovanni Imponente | Giovanni Imponente and Giovanni Montani | Inhomogeneous de Sitter Solution with Scalar Field and Perturbations
Spectrum | 9 pages, no figures, to appear on Mod.Phys.Lett. A | Mod.Phys.Lett. A19 (2004) 1281-1290 | 10.1142/S0217732304014057 | null | gr-qc astro-ph | null | We provide an inhomogeneous solution concerning the dynamics of a real self
interacting scalar field minimally coupled to gravity in a region of the
configuration space where it performs a slow rolling on a plateau of its
potential. During the inhomogeneous de Sitter phase the scalar field dominant
term is a function... | [
{
"created": "Wed, 7 Apr 2004 10:52:03 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Imponente",
"Giovanni",
""
],
[
"Montani",
"Giovanni",
""
]
] | We provide an inhomogeneous solution concerning the dynamics of a real self interacting scalar field minimally coupled to gravity in a region of the configuration space where it performs a slow rolling on a plateau of its potential. During the inhomogeneous de Sitter phase the scalar field dominant term is a function o... |
2408.02235 | Tian-Yong Cao | Tian-Yong Cao, Ankit Kumar, and Shu-Xu Yi | Constraining gravitational wave velocities using gravitational and
electromagnetic wave observations of white dwarf binaries | 10 pages, 10 figures | Monthly Notices of the Royal Astronomical Society, 2024: stae1755 | 10.1093/mnras/stae1755 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Although the general theory of relativity (GR) predicts that gravitational
waves (GWs) have exactly the same propagation velocity as electromagnetic (EM)
waves, many theories of gravity beyond GR expect otherwise. Accurate
measurement of the difference in their propagation speed, or a tight constraint
on it, could be... | [
{
"created": "Mon, 5 Aug 2024 04:56:20 GMT",
"version": "v1"
}
] | 2024-08-06 | [
[
"Cao",
"Tian-Yong",
""
],
[
"Kumar",
"Ankit",
""
],
[
"Yi",
"Shu-Xu",
""
]
] | Although the general theory of relativity (GR) predicts that gravitational waves (GWs) have exactly the same propagation velocity as electromagnetic (EM) waves, many theories of gravity beyond GR expect otherwise. Accurate measurement of the difference in their propagation speed, or a tight constraint on it, could be c... |
2311.15585 | Zhixiang Ren | Tianyu Zhao, Ruijun Shi, Yue Zhou, Zhoujian Cao, Zhixiang Ren | Dawning of a New Era in Gravitational Wave Data Analysis: Unveiling
Cosmic Mysteries via Artificial Intelligence -- A Systematic Review | null | null | null | null | gr-qc astro-ph.HE astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Background: Artificial intelligence (AI), with its vast capabilities, has
become an integral part of our daily interactions, particularly with the rise
of sophisticated models like Large Language Models. These advancements have not
only transformed human-machine interactions but have also paved the way for
significan... | [
{
"created": "Mon, 27 Nov 2023 07:21:24 GMT",
"version": "v1"
}
] | 2023-11-28 | [
[
"Zhao",
"Tianyu",
""
],
[
"Shi",
"Ruijun",
""
],
[
"Zhou",
"Yue",
""
],
[
"Cao",
"Zhoujian",
""
],
[
"Ren",
"Zhixiang",
""
]
] | Background: Artificial intelligence (AI), with its vast capabilities, has become an integral part of our daily interactions, particularly with the rise of sophisticated models like Large Language Models. These advancements have not only transformed human-machine interactions but have also paved the way for significant ... |
gr-qc/0312121 | Sergio M. C. V. Goncalves | Sergio M. C. V. Goncalves | No-horizon theorem for vacuum gravity with spacelike G1 isometry groups | 6 pages, revtex4; published in Phys. Rev. D Rapid Comm | Phys.Rev. D68 (2003) 101502 | 10.1103/PhysRevD.68.101502 | null | gr-qc | null | We show that (3+1) vacuum spacetimes admitting a global, spacelike,
one-parameter Lie group of isometries of translational type cannot contain
apparent horizons. The only assumption made is that of the existence of a
global spacelike Killing vector field with infinite open orbits; the
four-dimensional vacuum spacetim... | [
{
"created": "Tue, 30 Dec 2003 19:43:53 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Goncalves",
"Sergio M. C. V.",
""
]
] | We show that (3+1) vacuum spacetimes admitting a global, spacelike, one-parameter Lie group of isometries of translational type cannot contain apparent horizons. The only assumption made is that of the existence of a global spacelike Killing vector field with infinite open orbits; the four-dimensional vacuum spacetime ... |
0705.2851 | Yoshiaki Himemoto | Takeshi Chiba, Yoshiaki Himemoto, Masahide Yamaguchi, Jun'ichi
Yokoyama | Effective Search Templates for a Primordial Stochastic Gravitational
Wave Background | 13 pages, 4 figures, final version to be published in PRD | Phys.Rev.D76:043516,2007 | 10.1103/PhysRevD.76.043516 | null | gr-qc astro-ph hep-ph | null | We calculate the signal-to-noise ratio (SNR) of the stochastic
gravitational-wave background in an extreme case that its spectrum has a sharp
falloff with its amplitude close to the detection threshold. Such a spectral
feature is a characteristic imprint of the change in the number of relativistic
degrees of freedom ... | [
{
"created": "Mon, 21 May 2007 12:48:37 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Aug 2007 15:04:05 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Chiba",
"Takeshi",
""
],
[
"Himemoto",
"Yoshiaki",
""
],
[
"Yamaguchi",
"Masahide",
""
],
[
"Yokoyama",
"Jun'ichi",
""
]
] | We calculate the signal-to-noise ratio (SNR) of the stochastic gravitational-wave background in an extreme case that its spectrum has a sharp falloff with its amplitude close to the detection threshold. Such a spectral feature is a characteristic imprint of the change in the number of relativistic degrees of freedom on... |
gr-qc/0509071 | Stephane Fay | Stephane Fay and Thierry Lehner | Bianchi type IX asymptotical behaviours with a massive scalar field:
chaos strikes back | 31 pages, 7 figures (low resolution) | Gen.Rel.Grav.37:1097-1117,2005 | 10.1007/s10714-005-0093-0 | null | gr-qc | null | We use numerical integrations to study the asymptotical behaviour of a
homogeneous but anisotropic Bianchi type IX model in General Relativity with a
massive scalar field. As it is well known, for a Brans-Dicke theory, the
asymptotical behaviour of the metric functions is ruled only by the Brans-Dicke
coupling consta... | [
{
"created": "Fri, 16 Sep 2005 17:10:46 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Fay",
"Stephane",
""
],
[
"Lehner",
"Thierry",
""
]
] | We use numerical integrations to study the asymptotical behaviour of a homogeneous but anisotropic Bianchi type IX model in General Relativity with a massive scalar field. As it is well known, for a Brans-Dicke theory, the asymptotical behaviour of the metric functions is ruled only by the Brans-Dicke coupling constant... |
1303.0849 | Norman Metzner | Paul Tod, Norman Metzner, Lionel Mason | Twistor Construction of Higher-Dimensional Black Holes - Part II:
Examples | 35 pages, 5 figures | Class. Quantum Grav. 30 (2013) 095002 | 10.1088/0264-9381/30/9/095002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply the twistor construction for higher-dimensional black holes to known
examples in five space-time dimensions. First the patching matrices are
calculated from the explicit metric for these examples. Then an ansatz is
proposed for obtaining the patching matrix instead from the data of rod
structure and angular ... | [
{
"created": "Mon, 4 Mar 2013 21:03:33 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Tod",
"Paul",
""
],
[
"Metzner",
"Norman",
""
],
[
"Mason",
"Lionel",
""
]
] | We apply the twistor construction for higher-dimensional black holes to known examples in five space-time dimensions. First the patching matrices are calculated from the explicit metric for these examples. Then an ansatz is proposed for obtaining the patching matrix instead from the data of rod structure and angular mo... |
gr-qc/0212044 | Kenneth Nordtvedt | Kenneth Nordtvedt | Space-Time Variation of Physical Constants and the Equivalence Principle | 5 pages, PCTex32.v3.4 | null | 10.1142/S0217751X02011655 | null | gr-qc | null | Location dependence of physical parameters such as the electromagnetic fine
structure constant and Newton's G produce body accelerations which violate
universality of free fall rates testable with laboratory and space experiments.
Theoretically related cosmological time variation of these same parameters are
also con... | [
{
"created": "Tue, 10 Dec 2002 03:01:59 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Nordtvedt",
"Kenneth",
""
]
] | Location dependence of physical parameters such as the electromagnetic fine structure constant and Newton's G produce body accelerations which violate universality of free fall rates testable with laboratory and space experiments. Theoretically related cosmological time variation of these same parameters are also const... |
1807.00987 | Jonghyun Sim | Jonghyun Sim, Jiwon Park, Tae Hoon Lee | Dynamical analysis of Brans-Dicke Universe with inverse power-law
effective potential | 20 pages, 9 figures, 2 tables, accepted for publication in MPLA | null | 10.1142/S0217732320500947 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study Brans-Dicke cosmology with an inverse power-law effective potential.
By using dynamical analyses, we search for fixed points corresponding to the
radiation-like matter and dark energy-dominated era of our Universe, and the
stability of fixed points is also investigated. We find phase space
trajectories which... | [
{
"created": "Tue, 3 Jul 2018 06:09:38 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Nov 2018 11:53:55 GMT",
"version": "v2"
},
{
"created": "Tue, 26 Feb 2019 12:35:22 GMT",
"version": "v3"
},
{
"created": "Sun, 2 Feb 2020 06:44:50 GMT",
"version": "v4"
}
] | 2020-02-04 | [
[
"Sim",
"Jonghyun",
""
],
[
"Park",
"Jiwon",
""
],
[
"Lee",
"Tae Hoon",
""
]
] | We study Brans-Dicke cosmology with an inverse power-law effective potential. By using dynamical analyses, we search for fixed points corresponding to the radiation-like matter and dark energy-dominated era of our Universe, and the stability of fixed points is also investigated. We find phase space trajectories which a... |
gr-qc/9712085 | Frans Pretorius | F. Pretorius, D. Vollick and W. Israel | An Operational Approach To Black Hole Entropy | 15 pages, LaTeX, submitted to Phys. Rev. D | Phys.Rev. D57 (1998) 6311-6316 | 10.1103/PhysRevD.57.6311 | null | gr-qc | null | In this paper we calculate the entropy of a thin spherical shell that
contracts reversibly from infinity down to its event horizon. We find that, for
a broad class of equations of state, the entropy of a non-extremal shell is
one-quarter of its area in the black hole limit. The considerations in this
paper suggest th... | [
{
"created": "Mon, 22 Dec 1997 09:03:17 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Pretorius",
"F.",
""
],
[
"Vollick",
"D.",
""
],
[
"Israel",
"W.",
""
]
] | In this paper we calculate the entropy of a thin spherical shell that contracts reversibly from infinity down to its event horizon. We find that, for a broad class of equations of state, the entropy of a non-extremal shell is one-quarter of its area in the black hole limit. The considerations in this paper suggest the ... |
2312.16681 | Dario Sauro | Riccardo Martini, Gregorio Paci, Dario Sauro | Radiative corrections to the Starobinsky Lagrangian from Torsion
fluctuations | 26 pages | null | null | null | gr-qc hep-ph hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the running of the $R^2$ coupling in the Starobinsky Lagrangian
that stems from integrating out quantum torsion fluctuations on a maximally
symmetric Euclidean background. Our analysis is performed in a manifestly
covariant way, exploiting both the recently-introduced spin-parity
decomposition of torsion pe... | [
{
"created": "Wed, 27 Dec 2023 18:51:46 GMT",
"version": "v1"
}
] | 2023-12-29 | [
[
"Martini",
"Riccardo",
""
],
[
"Paci",
"Gregorio",
""
],
[
"Sauro",
"Dario",
""
]
] | We derive the running of the $R^2$ coupling in the Starobinsky Lagrangian that stems from integrating out quantum torsion fluctuations on a maximally symmetric Euclidean background. Our analysis is performed in a manifestly covariant way, exploiting both the recently-introduced spin-parity decomposition of torsion pert... |
1207.7250 | Tetsuya Shiromizu | Tetsuya Shiromizu, Seiju Ohashi and Ryotaku Suzuki | A no-go on strictly stationary spacetimes in four/higher dimensions | 8 pages | null | 10.1103/PhysRevD.86.064041 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that strictly stationary spacetimes cannot have non-trivial
configurations of form fields/complex scalar fields and then the spacetime
should be exactly Minkowski or anti-deSitter spacetimes depending on the
presence of negative cosmological constant. That is, self-gravitating complex
scalar fields and form f... | [
{
"created": "Tue, 31 Jul 2012 14:06:40 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Shiromizu",
"Tetsuya",
""
],
[
"Ohashi",
"Seiju",
""
],
[
"Suzuki",
"Ryotaku",
""
]
] | We show that strictly stationary spacetimes cannot have non-trivial configurations of form fields/complex scalar fields and then the spacetime should be exactly Minkowski or anti-deSitter spacetimes depending on the presence of negative cosmological constant. That is, self-gravitating complex scalar fields and form fie... |
1110.6095 | Thomas L. Wilson | Thomas L. Wilson | A New Interpretation of Einstein's Cosmological Constant | 59 pages, 2 figures, 1 table | null | null | NASA-JSC Report Theor-Wil-04-2011 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new approach to the cosmological constant problem is proposed by modifying
Einstein's theory of general relativity, using instead a scalar-tensor theory
of gravitation. This theory of gravity crucially incorporates the concept of
quantum symmetry breaking. The role of the cosmological constant $\lambda$ as a
gravit... | [
{
"created": "Tue, 25 Oct 2011 21:24:20 GMT",
"version": "v1"
}
] | 2011-10-28 | [
[
"Wilson",
"Thomas L.",
""
]
] | A new approach to the cosmological constant problem is proposed by modifying Einstein's theory of general relativity, using instead a scalar-tensor theory of gravitation. This theory of gravity crucially incorporates the concept of quantum symmetry breaking. The role of the cosmological constant $\lambda$ as a graviton... |
gr-qc/0206077 | Claudio Dappiaggi | M. Carfora, C. Dappiaggi, A. Marzuoli | The modular geometry of Random Regge Triangulations | 36 pages corrected typos, enhanced introduction | Class.Quant.Grav. 19 (2002) 5195-5220 | 10.1088/0264-9381/19/20/312 | DFNT/T 2002/09 | gr-qc hep-th math-ph math.MP | null | We show that the introduction of triangulations with variable connectivity
and fluctuating egde-lengths (Random Regge Triangulations) allows for a
relatively simple and direct analyisis of the modular properties of 2
dimensional simplicial quantum gravity. In particular, we discuss in detail an
explicit bijection bet... | [
{
"created": "Wed, 26 Jun 2002 13:48:10 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Sep 2002 13:39:03 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Carfora",
"M.",
""
],
[
"Dappiaggi",
"C.",
""
],
[
"Marzuoli",
"A.",
""
]
] | We show that the introduction of triangulations with variable connectivity and fluctuating egde-lengths (Random Regge Triangulations) allows for a relatively simple and direct analyisis of the modular properties of 2 dimensional simplicial quantum gravity. In particular, we discuss in detail an explicit bijection betwe... |
gr-qc/0508093 | Anthony N. Aguirre | Anthony Aguirre, Matthew C. Johnson | Dynamics and instability of false vacuum bubbles | 16 PRD-style pages including 11 embedded figures; accepted by PRD.
Revised version includes new solution, discussion of 'thermal activation',
added reference, fixed typos | Phys.Rev. D72 (2005) 103525 | 10.1103/PhysRevD.72.103525 | null | gr-qc hep-th | null | This paper examines the classical dynamics of false vacuum regions embedded
in surrounding regions of true vacuum, in the thin-wall limit. The dynamics of
all generally relativistically allowed solutions -- most but not all of which
have been previously studied -- are derived, enumerated, and interpreted. We
comment ... | [
{
"created": "Mon, 22 Aug 2005 20:25:19 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Nov 2005 21:43:31 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Aguirre",
"Anthony",
""
],
[
"Johnson",
"Matthew C.",
""
]
] | This paper examines the classical dynamics of false vacuum regions embedded in surrounding regions of true vacuum, in the thin-wall limit. The dynamics of all generally relativistically allowed solutions -- most but not all of which have been previously studied -- are derived, enumerated, and interpreted. We comment on... |
1205.5715 | Mitsuhiro Matsumoto | Mitsuhiro Matsumoto, Hirotaka Yoshino, Hideo Kodama | Time evolution of a thin black ring via Hawking radiation | 28 pages, 6 figures | Phys. Rev. D 89, 044016 (2014) | 10.1103/PhysRevD.89.044016 | KEK-TH-1550 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black objects lose their mass and angular momenta through evaporation by
Hawking radiation, and the investigation of their time evolution has a long
history. In this paper, we study this problem for a five-dimensional doubly
spinning black ring. The black ring is assumed to emit only massless scalar
particles. We con... | [
{
"created": "Fri, 25 May 2012 14:52:32 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Dec 2013 09:16:16 GMT",
"version": "v2"
}
] | 2014-02-19 | [
[
"Matsumoto",
"Mitsuhiro",
""
],
[
"Yoshino",
"Hirotaka",
""
],
[
"Kodama",
"Hideo",
""
]
] | Black objects lose their mass and angular momenta through evaporation by Hawking radiation, and the investigation of their time evolution has a long history. In this paper, we study this problem for a five-dimensional doubly spinning black ring. The black ring is assumed to emit only massless scalar particles. We consi... |
1905.01479 | Jian-Yang Zhu | Xi-Bin Li and Jian-Yang Zhu | Thermal effect on primordial black holes in standard Higgs minimum
double-well potential | 9 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We attempt a new scheme to combine the Higgs field in the minimal standard
model and the statistic physics with thermal effect together. By introducing
the stochastic differential equation in FRW metric frame which is something
like the warm inflation model but not exactly the same. By using the previous
researches o... | [
{
"created": "Sat, 4 May 2019 11:52:10 GMT",
"version": "v1"
}
] | 2019-05-07 | [
[
"Li",
"Xi-Bin",
""
],
[
"Zhu",
"Jian-Yang",
""
]
] | We attempt a new scheme to combine the Higgs field in the minimal standard model and the statistic physics with thermal effect together. By introducing the stochastic differential equation in FRW metric frame which is something like the warm inflation model but not exactly the same. By using the previous researches on ... |
1612.01823 | Breno Giacchini | Breno L. Giacchini | Experimental limits on the free parameters of higher-derivative gravity | 4 pages. Contribution to the proceedings of the 14th Marcel Grossmann
Meeting, Rome 12-18 July 2015 | The Fourteenth Marcel Grossmann Meeting: pp. 1340-1345 (2017) | 10.1142/9789813226609_0109 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Fourth-derivative gravity has two free parameters, $\alpha$ and $\beta$,
which couple the curvature-squared terms $R^2$ and $R_{\mu\nu}^2$. Relativistic
effects and short-range laboratory experiments can be used to provide upper
limits to these constants. In this work we briefly review both types of
experimental resu... | [
{
"created": "Tue, 6 Dec 2016 14:29:37 GMT",
"version": "v1"
}
] | 2017-12-12 | [
[
"Giacchini",
"Breno L.",
""
]
] | Fourth-derivative gravity has two free parameters, $\alpha$ and $\beta$, which couple the curvature-squared terms $R^2$ and $R_{\mu\nu}^2$. Relativistic effects and short-range laboratory experiments can be used to provide upper limits to these constants. In this work we briefly review both types of experimental result... |
1804.05744 | Gerard Hooft 't | Gerard t Hooft | What happens in a black hole when a particle meets its antipode | 15 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The notion of antipodal identification on the black hole horizon is further
explained and elaborated. Contrasting with numerous attempts in the literature
to make fuzzy, poorly motivated models for black holes, we explain how, with an
absolute minimum of assumptions, known laws of local physics suffice to
calculate t... | [
{
"created": "Mon, 16 Apr 2018 15:38:51 GMT",
"version": "v1"
}
] | 2018-04-17 | [
[
"Hooft",
"Gerard t",
""
]
] | The notion of antipodal identification on the black hole horizon is further explained and elaborated. Contrasting with numerous attempts in the literature to make fuzzy, poorly motivated models for black holes, we explain how, with an absolute minimum of assumptions, known laws of local physics suffice to calculate the... |
gr-qc/0610022 | Shankaranarayanan S | Saurya Das (Lethbridge U), S. Shankaranarayanan (AEI, Golm) | Entanglement as a source of black hole entropy | 12 pages, latex, 5 figures. Invited talk by SD at `Recent
Developments in Gravity' (NEB XII), Nafplion, Greece, 30 June 2006. To appear
in Journal of Physics: Conference Series; V2: References added, Minor changes
to match published version | J.Phys.Conf.Ser.68:012015,2007 | 10.1088/1742-6596/68/1/012015 | AEI-2006-075 | gr-qc hep-th quant-ph | null | We review aspects of black hole thermodynamics, and show how entanglement of
a quantum field between the inside and outside of a horizon can account for the
area-proportionality of black hole entropy, provided the field is in its ground
state. We show that the result continues to hold for Coherent States and
Squeezed... | [
{
"created": "Fri, 6 Oct 2006 06:38:19 GMT",
"version": "v1"
},
{
"created": "Sun, 3 Jun 2007 15:13:22 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Das",
"Saurya",
"",
"Lethbridge U"
],
[
"Shankaranarayanan",
"S.",
"",
"AEI, Golm"
]
] | We review aspects of black hole thermodynamics, and show how entanglement of a quantum field between the inside and outside of a horizon can account for the area-proportionality of black hole entropy, provided the field is in its ground state. We show that the result continues to hold for Coherent States and Squeezed S... |
1312.3147 | Alexander Kamenshchik | A.O. Barvinsky and A.Yu. Kamenshchik | Selection rules for the Wheeler-DeWitt equation in quantum cosmology | final version, to appear in Physical Review D | Physical Review D 89 (2014) 043526 | 10.1103/PhysRevD.89.043526 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Selection of physically meaningful solutions of the Wheeler-DeWitt equation
for the wavefunction in quantum cosmology, can be attained by a reduction of
the theory to the sector of true physical degrees of freedom and their
canonical quantization. The resulting physical wavefunction unitarily evolving
in the time var... | [
{
"created": "Wed, 11 Dec 2013 12:52:46 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Jan 2014 08:46:21 GMT",
"version": "v2"
}
] | 2014-05-06 | [
[
"Barvinsky",
"A. O.",
""
],
[
"Kamenshchik",
"A. Yu.",
""
]
] | Selection of physically meaningful solutions of the Wheeler-DeWitt equation for the wavefunction in quantum cosmology, can be attained by a reduction of the theory to the sector of true physical degrees of freedom and their canonical quantization. The resulting physical wavefunction unitarily evolving in the time varia... |
2308.02375 | Polina Dyadina | P.I. Dyadina, N.A. Avdeev | Thin accretion disk signatures in hybrid metric-Palatini gravity | 21 pages, 14 figures | Eur. Phys. J. C 84, 103 (2024) | 10.1140/epjc/s10052-024-12465-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work, accretion onto a static spherically symmetric black hole
in the hybrid metric-Palatini gravity is considered. The Novikov-Thorne model
for a relativistic thin accretion disk is used. The energy flux, temperature
distribution, emission spectrum and energy conversion efficiency of accretion
disks a... | [
{
"created": "Fri, 4 Aug 2023 15:15:34 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Sep 2023 18:27:04 GMT",
"version": "v2"
},
{
"created": "Fri, 2 Feb 2024 10:33:49 GMT",
"version": "v3"
}
] | 2024-02-05 | [
[
"Dyadina",
"P. I.",
""
],
[
"Avdeev",
"N. A.",
""
]
] | In the present work, accretion onto a static spherically symmetric black hole in the hybrid metric-Palatini gravity is considered. The Novikov-Thorne model for a relativistic thin accretion disk is used. The energy flux, temperature distribution, emission spectrum and energy conversion efficiency of accretion disks aro... |
gr-qc/0108084 | Satoshi Yamaguchi | Satoshi Yamaguchi (Kyoto Univ.) | Enhancon and Resolution of Singularity | 10 pages, LaTeX, 8 figures, talk at the Meeting of Frontier of
Cosmology and Gravitation, Kyoto, Japan, 25-27 April 2001, v2: minor changes,
typos corrected | null | null | KUCP-0194 | gr-qc | null | We review the enhancon mechanism proposed by Johnson, Peet and Polchinski. If
we consider the D6-brane wrapped on K3, then there appear a naked singularity
called ``repulson'' in the supergravity solution. But this singularity is
resolved by a shell structure called ``enhancon''. In the interior of the
enhancon, the ... | [
{
"created": "Fri, 31 Aug 2001 08:08:04 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Sep 2001 08:30:51 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Yamaguchi",
"Satoshi",
"",
"Kyoto Univ."
]
] | We review the enhancon mechanism proposed by Johnson, Peet and Polchinski. If we consider the D6-brane wrapped on K3, then there appear a naked singularity called ``repulson'' in the supergravity solution. But this singularity is resolved by a shell structure called ``enhancon''. In the interior of the enhancon, the ab... |
1909.07807 | Faizuddin Ahmed | Faizuddin Ahmed | Comment on "Ground state of a bosonic massive charged particle in the
presence of external fields in a G\"{o}del-type space-time [Eur. Phys. J.
Plus (2018) 133 : 530]" | This is a comment on article arXiv:1807.02838 [hep-th]; overall
presentation improved, accepted for publication in EPJ Plus | Eur. Phys. J. Plus (2020) 135 (02):174 | 10.1140/epjp/s13360-020-00196-z | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We point out incorrect equations derived in a paper published in this journal
Ref. [1] (E. O. Silva, Eur. Phys. J. Plus (2018) 133 : 530) for the
Klein-Gordon equation with the Aharonov-Bohm and Coulomb potentials in a
G\"{o}del-type space-time. We derive the final form of the radial wave equation
of the Klein-Gordon... | [
{
"created": "Sun, 15 Sep 2019 12:40:54 GMT",
"version": "v1"
},
{
"created": "Sat, 21 Sep 2019 10:35:41 GMT",
"version": "v2"
},
{
"created": "Sun, 2 Feb 2020 04:22:06 GMT",
"version": "v3"
}
] | 2020-02-04 | [
[
"Ahmed",
"Faizuddin",
""
]
] | We point out incorrect equations derived in a paper published in this journal Ref. [1] (E. O. Silva, Eur. Phys. J. Plus (2018) 133 : 530) for the Klein-Gordon equation with the Aharonov-Bohm and Coulomb potentials in a G\"{o}del-type space-time. We derive the final form of the radial wave equation of the Klein-Gordon e... |
2212.06103 | Raimon Luna | Raimon Luna, Juan Calder\'on Bustillo, Juan Jos\'e Seoane Mart\'inez,
Alejandro Torres-Forn\'e, Jos\'e A. Font | Solving the Teukolsky equation with physics-informed neural networks | 12 pages, 7 figures. v2: Matches published version, minor typos
corrected | Phys.Rev.D 107 (2023) 6, 064025 | 10.1103/PhysRevD.107.064025 | null | gr-qc astro-ph.HE physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use physics-informed neural networks (PINNs) to compute the first
quasi-normal modes of the Kerr geometry via the Teukolsky equation. This
technique allows us to extract the complex frequencies and separation constants
of the equation without the need for sophisticated numerical techniques, and
with an almost imme... | [
{
"created": "Mon, 12 Dec 2022 18:23:41 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Apr 2024 17:17:05 GMT",
"version": "v2"
}
] | 2024-04-09 | [
[
"Luna",
"Raimon",
""
],
[
"Bustillo",
"Juan Calderón",
""
],
[
"Martínez",
"Juan José Seoane",
""
],
[
"Torres-Forné",
"Alejandro",
""
],
[
"Font",
"José A.",
""
]
] | We use physics-informed neural networks (PINNs) to compute the first quasi-normal modes of the Kerr geometry via the Teukolsky equation. This technique allows us to extract the complex frequencies and separation constants of the equation without the need for sophisticated numerical techniques, and with an almost immedi... |
2003.12999 | Sijie Gao | Chengcheng Liu and Sijie Gao | Overcharging magnetized black holes at linear order and the weak cosmic
censorship conjecture | 13 pages, 1 figure | Phys. Rev. D 101, 124067 (2020) | 10.1103/PhysRevD.101.124067 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Evidences have been found that the weak cosmic censorship conjecture could be
violated if test particles with charge and angular momentum are injected into a
black hole. However, second-order corrections and fine-tunings on the
particle's parameters are required in previous studies, indicating that
self-force and rad... | [
{
"created": "Sun, 29 Mar 2020 10:53:56 GMT",
"version": "v1"
}
] | 2020-07-08 | [
[
"Liu",
"Chengcheng",
""
],
[
"Gao",
"Sijie",
""
]
] | Evidences have been found that the weak cosmic censorship conjecture could be violated if test particles with charge and angular momentum are injected into a black hole. However, second-order corrections and fine-tunings on the particle's parameters are required in previous studies, indicating that self-force and radia... |
1908.07103 | Zack Carson | Zack Carson and Kent Yagi | Parameterized and Consistency Tests of Gravity with Gravitational Waves:
Current and Future | To appear in the proceedings of the conference 'Recent Progress in
Relativistic Astrophysics', Shanghai, China, 6-8 May 2019; Fixed error on
Fig. 4 axis label; Updated DECIGO noise curve; Fixed typo in equations | null | 10.3390/proceedings2019017005 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave observations offer unique opportunities to probe gravity
in the strong and dynamical regime, which was difficult to access previously.
We here review two theory-agnostic ways to carry out tests of general
relativity with gravitational waves, namely (i) parameterized waveform tests
and (ii) consiste... | [
{
"created": "Mon, 19 Aug 2019 23:20:15 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Sep 2019 04:00:21 GMT",
"version": "v2"
},
{
"created": "Tue, 8 Oct 2019 22:35:17 GMT",
"version": "v3"
},
{
"created": "Sat, 26 Oct 2019 02:27:25 GMT",
"version": "v4"
}
] | 2020-05-19 | [
[
"Carson",
"Zack",
""
],
[
"Yagi",
"Kent",
""
]
] | Gravitational wave observations offer unique opportunities to probe gravity in the strong and dynamical regime, which was difficult to access previously. We here review two theory-agnostic ways to carry out tests of general relativity with gravitational waves, namely (i) parameterized waveform tests and (ii) consistenc... |
gr-qc/0110101 | null | Sergei Kopeikin and Bahram Mashhoon (Department of Physics and
Astronomy, University of Missouri-Columbia) | Gravitomagnetic Effects in the Propagation of Electromagnetic Waves in
Variable Gravitational Fields of Arbitrary-Moving and Spinning Bodies | 36 pages, 1 figure, submitted to Phys. Rev. D | Phys.Rev.D65:064025,2002 | 10.1103/PhysRevD.65.064025 | null | gr-qc astro-ph | null | Propagation of light in the gravitational field of self-gravitating spinning
bodies moving with arbitrary velocities is discussed. The gravitational field
is assumed to be "weak" everywhere. Equations of motion of a light ray are
solved in the first post-Minkowskian approximation that is linear with respect
to the un... | [
{
"created": "Tue, 23 Oct 2001 23:45:30 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Oct 2001 14:53:42 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Kopeikin",
"Sergei",
"",
"Department of Physics and\n Astronomy, University of Missouri-Columbia"
],
[
"Mashhoon",
"Bahram",
"",
"Department of Physics and\n Astronomy, University of Missouri-Columbia"
]
] | Propagation of light in the gravitational field of self-gravitating spinning bodies moving with arbitrary velocities is discussed. The gravitational field is assumed to be "weak" everywhere. Equations of motion of a light ray are solved in the first post-Minkowskian approximation that is linear with respect to the univ... |
2112.12048 | Fabrizio Corelli | Fabrizio Corelli | Instability of Schwarzschild Black Holes in Einstein-scalar-Gauss-Bonnet
Gravity: Perturbative Approach and Time-Domain Analysis | 81 pages, 13 figures, Master thesis defended at Sapienza University
of Rome on 20th October 2020 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the instability of Schwarzschild black holes and the appearance of
scalarized solutions in Einstein-scalar-Gauss-Bonnet gravity performing a
time-domain analysis in a perturbative scheme. First we consider a quadratic
coupling function and we perform an expansion for a small perturbation of the
scalar field ... | [
{
"created": "Wed, 22 Dec 2021 17:18:04 GMT",
"version": "v1"
}
] | 2021-12-23 | [
[
"Corelli",
"Fabrizio",
""
]
] | We study the instability of Schwarzschild black holes and the appearance of scalarized solutions in Einstein-scalar-Gauss-Bonnet gravity performing a time-domain analysis in a perturbative scheme. First we consider a quadratic coupling function and we perform an expansion for a small perturbation of the scalar field ar... |
2104.06691 | Xiongjun Fang | Wei Yang, Xiongjun Fang, Jiliang Jing | Consistency between dynamical and thermodynamical stabilities for
charged self-gravitating perfect fluid | 9 pages | General Relativity and Gravitation (2021) 53:81 | 10.1007/s10714-021-02852-w | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The entropy principle shows that, for self-gravitating perfect fluid, the
Einstein field equations can be derived from the extrema of the total entropy,
and the thermodynamical stability criterion are equivalent to the dynamical
stability criterion. In this paper, we recast the dynamical criterion for the
charged sel... | [
{
"created": "Wed, 14 Apr 2021 08:34:04 GMT",
"version": "v1"
}
] | 2021-08-27 | [
[
"Yang",
"Wei",
""
],
[
"Fang",
"Xiongjun",
""
],
[
"Jing",
"Jiliang",
""
]
] | The entropy principle shows that, for self-gravitating perfect fluid, the Einstein field equations can be derived from the extrema of the total entropy, and the thermodynamical stability criterion are equivalent to the dynamical stability criterion. In this paper, we recast the dynamical criterion for the charged self-... |
1811.11600 | Xiaoning Wu | Xiaoning Wu and Xiao Zhang | Energy-momentum in general relativity | 21 pages | Published on Memorial Volume for Yi-Shi Duan. Edited by Mo-Lin Ge,
Rong-Gen Cai, Yu-Xiao Liu. pp 189-209. World Scientific 2018 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We briefly review of the definitions of the total energy, the total linear
momentum and the angular momentum of gravitational field when the cosmological
constant is zero. In particular, we show pseudo-tensor's definition of the
energy and the momentum given by Prof. Duan in 1963 agree with the ADM total
energy-momen... | [
{
"created": "Wed, 28 Nov 2018 14:49:41 GMT",
"version": "v1"
}
] | 2018-11-29 | [
[
"Wu",
"Xiaoning",
""
],
[
"Zhang",
"Xiao",
""
]
] | We briefly review of the definitions of the total energy, the total linear momentum and the angular momentum of gravitational field when the cosmological constant is zero. In particular, we show pseudo-tensor's definition of the energy and the momentum given by Prof. Duan in 1963 agree with the ADM total energy-momentu... |
2401.12330 | Narasimha Reddy Gosala | Narasimha Reddy Gosala, Arundhati Dasgupta | Effect of Gravitational Waves on Yang-Mills condensates | 26 pages, 20 figures; Includes a discussion on motivation and
implications of YM fields in the context of cosmology in the introduction and
conclusion; typos corrected; Additional references included | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this article, we investigate the interactions of a Yang-Mills (YM) wave
fluctuation of a classical isotropic, homogeneous YM condensate, which models
gluon plasma, with a Gravitational Wave (GW). We re-analyse the study of
fluctuations of the gluon plasma using vector decomposition of the gauge field
into scalar, ... | [
{
"created": "Mon, 22 Jan 2024 19:45:11 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Feb 2024 17:22:13 GMT",
"version": "v2"
}
] | 2024-02-23 | [
[
"Gosala",
"Narasimha Reddy",
""
],
[
"Dasgupta",
"Arundhati",
""
]
] | In this article, we investigate the interactions of a Yang-Mills (YM) wave fluctuation of a classical isotropic, homogeneous YM condensate, which models gluon plasma, with a Gravitational Wave (GW). We re-analyse the study of fluctuations of the gluon plasma using vector decomposition of the gauge field into scalar, lo... |
1706.06400 | Andronikos Paliathanasis | Andronikos Paliathanasis | Analytic Solution of the Starobinsky Model for Inflation | 5 pages, references added, to appear in EPJC | Eur. Phys. J. C 77, 438 (2017) | 10.1140/epjc/s10052-017-5009-0 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that the field equations of the Starobinsky model for inflation in a
Friedmann-Lema\^{\i}tre-Robertson-Walker constitute an integrable system as the
field equations pass the singularity test. The analytical solution in terms of
a Painlev\'{e} Series for the Starobinsky model is presented for the case of
zero... | [
{
"created": "Tue, 20 Jun 2017 13:06:09 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Jun 2017 15:26:30 GMT",
"version": "v2"
}
] | 2017-07-05 | [
[
"Paliathanasis",
"Andronikos",
""
]
] | We prove that the field equations of the Starobinsky model for inflation in a Friedmann-Lema\^{\i}tre-Robertson-Walker constitute an integrable system as the field equations pass the singularity test. The analytical solution in terms of a Painlev\'{e} Series for the Starobinsky model is presented for the case of zero a... |
2107.08352 | Yan-Gang Miao | Xin-Chang Cai, Yan-Gang Miao | Can we know about black hole thermodynamics through shadows? | v1: 31 pages, 11 figures, a new paper regarding shadow and
thermodynamics for both spherically symmetric and rotating black holes,
substantial new results for rotating black holes, only a small part of
discussions on shadow and scalar curvature for spherically symmetric black
holes overlapping with arXiv:2101.1... | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the relationship between shadow radius and microstructure for
a general static spherically symmetric black hole and confirm their close
connection. In this regard, we take the Reissner-Nordstr\"om (AdS) black hole
as an example to do the concrete analysis. On the other hand, we study for the
Kerr (AdS)... | [
{
"created": "Sun, 18 Jul 2021 03:14:35 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Jul 2021 03:07:42 GMT",
"version": "v2"
},
{
"created": "Fri, 30 Jul 2021 10:01:30 GMT",
"version": "v3"
},
{
"created": "Fri, 12 Nov 2021 07:23:03 GMT",
"version": "v4"
}
] | 2021-11-15 | [
[
"Cai",
"Xin-Chang",
""
],
[
"Miao",
"Yan-Gang",
""
]
] | We investigate the relationship between shadow radius and microstructure for a general static spherically symmetric black hole and confirm their close connection. In this regard, we take the Reissner-Nordstr\"om (AdS) black hole as an example to do the concrete analysis. On the other hand, we study for the Kerr (AdS) b... |
1905.09850 | Yuri Bonder | Y. Bonder and C. Corral | Symmetries in the SME gravity sector: A study in the first-order
formalism | Presented at the Eighth Meeting on CPT and Lorentz Symmetry,
Bloomington, Indiana, May 12-16, 2019 | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A method to find the symmetries of a theory in the first order formalism of
gravity is presented. This method is applied to the minimal gravity sector of
the Standard Model Extension. It is argued that no inconsistencies arise when
Lorentz violation is explicit and the relation between Lorentz violation and
invarianc... | [
{
"created": "Thu, 23 May 2019 18:11:39 GMT",
"version": "v1"
}
] | 2019-05-27 | [
[
"Bonder",
"Y.",
""
],
[
"Corral",
"C.",
""
]
] | A method to find the symmetries of a theory in the first order formalism of gravity is presented. This method is applied to the minimal gravity sector of the Standard Model Extension. It is argued that no inconsistencies arise when Lorentz violation is explicit and the relation between Lorentz violation and invariance ... |
1609.08268 | Chad Galley | Chad R. Galley and Ira Z. Rothstein | Deriving analytic solutions for compact binary inspirals without
recourse to adiabatic approximations | 18 pages, 2 figures | Phys. Rev. D 95, 104054 (2017) | 10.1103/PhysRevD.95.104054 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We utilize the dynamical renormalization group formalism to calculate the
real space trajectory of a compact binary inspiral for long times via a
systematic resummation of secularly growing terms. This method generates closed
form solutions without orbit averaging, and the accuracy can be systematically
improved. The... | [
{
"created": "Tue, 27 Sep 2016 06:03:02 GMT",
"version": "v1"
}
] | 2017-06-07 | [
[
"Galley",
"Chad R.",
""
],
[
"Rothstein",
"Ira Z.",
""
]
] | We utilize the dynamical renormalization group formalism to calculate the real space trajectory of a compact binary inspiral for long times via a systematic resummation of secularly growing terms. This method generates closed form solutions without orbit averaging, and the accuracy can be systematically improved. The e... |
1404.0862 | Qasem Exirifard | Qasem Exirifard | Gauge Vectors-Tensor Gravity | 7 pages, dynamical stability of the theory proved | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review and extend the Gauge Vectors-Tensor gravity: a covariant theory of
gravity composed of a metric and gauge fields, leading to simple second order
partial differential equations of motion, whose Newtonian and strong limits
coincide to those of the Einsten-Hilbert action but the physics of its very
weak fields... | [
{
"created": "Thu, 3 Apr 2014 11:25:35 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Jun 2014 11:04:51 GMT",
"version": "v2"
}
] | 2014-06-03 | [
[
"Exirifard",
"Qasem",
""
]
] | We review and extend the Gauge Vectors-Tensor gravity: a covariant theory of gravity composed of a metric and gauge fields, leading to simple second order partial differential equations of motion, whose Newtonian and strong limits coincide to those of the Einsten-Hilbert action but the physics of its very weak fields s... |
1906.05633 | Aurelien Barrau | Flora Moulin, Aur\'elien Barrau | Analytical proof of the isospectrality of quasinormal modes for
Schwarzschild-de Sitter and Schwarzschild-Anti de Sitter spacetimes | null | null | 10.1007/s10714-020-02737-4 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The deep reason why the equations describing axial and polar perturbations of
Schwarzschild black holes have the same spectrum is far from trivial. In this
article, we revisit the original proof and try to make it clearer. Still
focusing on uncharged and non-rotating black holes, we extend the results to
spacetimes i... | [
{
"created": "Thu, 13 Jun 2019 12:31:47 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Feb 2020 13:55:25 GMT",
"version": "v2"
},
{
"created": "Wed, 2 Sep 2020 17:27:36 GMT",
"version": "v3"
}
] | 2020-09-09 | [
[
"Moulin",
"Flora",
""
],
[
"Barrau",
"Aurélien",
""
]
] | The deep reason why the equations describing axial and polar perturbations of Schwarzschild black holes have the same spectrum is far from trivial. In this article, we revisit the original proof and try to make it clearer. Still focusing on uncharged and non-rotating black holes, we extend the results to spacetimes inc... |
1204.0407 | Marc Casals | Marc Casals and Brien C. Nolan | A Kirchhoff integral approach to the calculation of Green's functions
beyond the normal neighbourhood | 32 pages, 5 figures. Minor modifications throughout in version 2 | null | 10.1103/PhysRevD.86.024038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new method for investigating the global properties of the
retarded Green's function $G_R(x',x)$ for fields propagating on an arbitrary
globally hyperbolic spacetime. Our method combines the Hadamard form for $G_R$
(this form is only valid within a normal neighbourhood of $x$) together with
Kirchhoff's in... | [
{
"created": "Mon, 2 Apr 2012 13:46:43 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Apr 2012 19:26:14 GMT",
"version": "v2"
}
] | 2013-05-30 | [
[
"Casals",
"Marc",
""
],
[
"Nolan",
"Brien C.",
""
]
] | We propose a new method for investigating the global properties of the retarded Green's function $G_R(x',x)$ for fields propagating on an arbitrary globally hyperbolic spacetime. Our method combines the Hadamard form for $G_R$ (this form is only valid within a normal neighbourhood of $x$) together with Kirchhoff's inte... |
gr-qc/9802031 | Marcelo Jose Reboucas | A. Bernui, G.I. Gomero, M.J. Reboucas, A.F.F. Teixeira | Radiation Damping in FRW Space-times with Different Topologies | 13 pages, RevTeX, 5 figures, To appear in Phys. Rev. D 15, vol. 57
(1998) | Phys.Rev. D57 (1998) 4699-4706 | 10.1103/PhysRevD.57.4699 | CBPF-NF-027/97 | gr-qc astro-ph hep-ph hep-th | null | We study the role played by the compactness and the degree of connectedness
in the time evolution of the energy of a radiating system in the
Friedmann-Robertson-Walker (FRW) space-times whose $t=const $ spacelike
sections are the Euclidean 3-manifold ${\cal R}^3$ and six topologically
non-equivalent flat orientable c... | [
{
"created": "Fri, 13 Feb 1998 20:37:18 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Bernui",
"A.",
""
],
[
"Gomero",
"G. I.",
""
],
[
"Reboucas",
"M. J.",
""
],
[
"Teixeira",
"A. F. F.",
""
]
] | We study the role played by the compactness and the degree of connectedness in the time evolution of the energy of a radiating system in the Friedmann-Robertson-Walker (FRW) space-times whose $t=const $ spacelike sections are the Euclidean 3-manifold ${\cal R}^3$ and six topologically non-equivalent flat orientable com... |
2011.08878 | Sarah Habib | Sarah Habib, Antoni Ramos-Buades, E. A. Huerta, Sascha Husa, Roland
Haas, Zachariah Etienne | Initial Data and Eccentricity Reduction Toolkit for Binary Black Hole
Numerical Relativity Waveforms | 11 pages, 1 figure, 1 table. Open source software available at:
https://github.com/NCSAGravity/eccred | null | 10.1088/1361-6382/abe691 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The production of numerical relativity waveforms that describe quasicircular
binary black hole mergers requires high-quality initial data, and an algorithm
to iteratively reduce residual eccentricity. To date, these tools remain closed
source, or in commercial software that prevents their use in high performance
comp... | [
{
"created": "Tue, 17 Nov 2020 19:10:03 GMT",
"version": "v1"
}
] | 2021-06-09 | [
[
"Habib",
"Sarah",
""
],
[
"Ramos-Buades",
"Antoni",
""
],
[
"Huerta",
"E. A.",
""
],
[
"Husa",
"Sascha",
""
],
[
"Haas",
"Roland",
""
],
[
"Etienne",
"Zachariah",
""
]
] | The production of numerical relativity waveforms that describe quasicircular binary black hole mergers requires high-quality initial data, and an algorithm to iteratively reduce residual eccentricity. To date, these tools remain closed source, or in commercial software that prevents their use in high performance comput... |
1208.5102 | Kent Yagi | Kent Yagi, Nicolas Yunes, Takahiro Tanaka | Gravitational Waves from Quasi-Circular Black Hole Binaries in Dynamical
Chern-Simons Gravity | 6 pages, 1 figure; errors corrected in Eqs. (8) and (9) | Phys. Rev. Lett. 109, 251105 (2012) | 10.1103/PhysRevLett.109.251105 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamical Chern-Simons gravity cannot be strongly constrained with current
experiments because it reduces to General Relativity in the weak-field limit.
This theory, however, introduces modifications in the non-linear, dynamical
regime, and thus, it could be greatly constrained with gravitational waves from
the late ... | [
{
"created": "Sat, 25 Aug 2012 05:26:17 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Feb 2013 06:02:22 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Apr 2016 15:22:59 GMT",
"version": "v3"
},
{
"created": "Thu, 2 Jan 2020 06:36:50 GMT",
"version": "v4"
}
] | 2020-01-03 | [
[
"Yagi",
"Kent",
""
],
[
"Yunes",
"Nicolas",
""
],
[
"Tanaka",
"Takahiro",
""
]
] | Dynamical Chern-Simons gravity cannot be strongly constrained with current experiments because it reduces to General Relativity in the weak-field limit. This theory, however, introduces modifications in the non-linear, dynamical regime, and thus, it could be greatly constrained with gravitational waves from the late in... |
0805.1241 | Jorge P\'aramos | O. Bertolami and J. P\'aramos | On the non-minimal gravitational coupling to matter | 11 pages | Class.Quant.Grav.25:245017,2008 | 10.1088/0264-9381/25/24/245017 | DF/IST-2.2008 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The connection between $f(R)$ theories of gravity and scalar-tensor models
with a "physical" metric coupled to the scalar field is well known. In this
work, we pursue the equivalence between a suitable scalar theory and a model
that generalises the $f(R)$ scenario, encompassing both a non-trivial scalar
curvature ter... | [
{
"created": "Thu, 8 May 2008 20:25:18 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Aug 2008 19:08:17 GMT",
"version": "v2"
}
] | 2009-01-01 | [
[
"Bertolami",
"O.",
""
],
[
"Páramos",
"J.",
""
]
] | The connection between $f(R)$ theories of gravity and scalar-tensor models with a "physical" metric coupled to the scalar field is well known. In this work, we pursue the equivalence between a suitable scalar theory and a model that generalises the $f(R)$ scenario, encompassing both a non-trivial scalar curvature term ... |
1105.4336 | Daniele Malafarina | Pankaj S. Joshi and Daniele Malafarina | Instability of black hole formation under small pressure perturbations | 7 pages, 1 figure, several modifications to match published version
on GRG | null | 10.1007/s10714-012-1471-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate here the spectrum of gravitational collapse endstates when
arbitrarily small perfect fluid pressures are introduced in the classic black
hole formation scenario as described by Oppenheimer, Snyder and Datt (OSD) [1].
This extends a previous result on tangential pressures [2] to the more
physically real... | [
{
"created": "Sun, 22 May 2011 13:13:45 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Nov 2012 08:34:03 GMT",
"version": "v2"
}
] | 2012-11-15 | [
[
"Joshi",
"Pankaj S.",
""
],
[
"Malafarina",
"Daniele",
""
]
] | We investigate here the spectrum of gravitational collapse endstates when arbitrarily small perfect fluid pressures are introduced in the classic black hole formation scenario as described by Oppenheimer, Snyder and Datt (OSD) [1]. This extends a previous result on tangential pressures [2] to the more physically realis... |
2010.04006 | Hossein Ghaffarnejad | Hossein Ghaffarnejad and Elham Ghasemi Kordkheilee | Thermodynamics phase transition of Anti de Sitter Schwarzschild
scalar-tensor-vector-Black Holes | 21 pages, 4 figures | Iranian Journal of Astronomy and Astrophysics 2023 | 10.22128/ijaa.2022.592.1124 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Instead of scalar tensor gravity models which is applicable for description
of cosmic inflation with unknown dark sector of matter/energy, at presentense
there are presented different alternative scalar tensor vector gravities where
meaningful dynamical vector fields can support cosmic inflation well without to
use d... | [
{
"created": "Wed, 7 Oct 2020 17:33:06 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Dec 2020 23:29:21 GMT",
"version": "v2"
}
] | 2023-01-24 | [
[
"Ghaffarnejad",
"Hossein",
""
],
[
"Kordkheilee",
"Elham Ghasemi",
""
]
] | Instead of scalar tensor gravity models which is applicable for description of cosmic inflation with unknown dark sector of matter/energy, at presentense there are presented different alternative scalar tensor vector gravities where meaningful dynamical vector fields can support cosmic inflation well without to use dar... |
2112.11851 | Maximilian K\"olsch | Maximilian K\"olsch, Tim Dietrich, Maximiliano Ujevic, Bernd Bruegmann | Investigating the mass-ratio dependence of the prompt-collapse threshold
with numerical-relativity simulations | 26 pages, 18 figures, 16 tables | null | 10.1103/PhysRevD.106.044026 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The next observing runs of advanced gravitational-wave detectors will lead to
a variety of binary neutron star detections and numerous possibilities for
multi-messenger observations of binary neutron star systems. In this context a
clear understanding of the merger process and the possibility of prompt black
hole for... | [
{
"created": "Wed, 22 Dec 2021 12:58:07 GMT",
"version": "v1"
}
] | 2022-08-31 | [
[
"Kölsch",
"Maximilian",
""
],
[
"Dietrich",
"Tim",
""
],
[
"Ujevic",
"Maximiliano",
""
],
[
"Bruegmann",
"Bernd",
""
]
] | The next observing runs of advanced gravitational-wave detectors will lead to a variety of binary neutron star detections and numerous possibilities for multi-messenger observations of binary neutron star systems. In this context a clear understanding of the merger process and the possibility of prompt black hole forma... |
1510.00595 | Cl\'audio Nassif Cruz | Cl\'audio Nassif | An explanation for the tiny value of the cosmological constant and the
low vacuum energy density | 26 pages, 6 figures. arXiv admin note: substantial text overlap with
arXiv:1211.3612, arXiv:0805.1201, arXiv:0711.4897, arXiv:1308.5258 | General Relativity and Gravitation Vol.47, 9, p.1-34 (2015) | 10.1007/s10714-015-1939-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper aims to provide an explanation for the tiny value of the
cosmological constant and the low vacuum energy density to represent the dark
energy. To accomplish this, we will search for a fundamental principle of
symmetry in space-time by means of the elimination of the classical idea of
rest, by including an i... | [
{
"created": "Mon, 28 Sep 2015 21:42:00 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Nov 2016 18:37:54 GMT",
"version": "v2"
}
] | 2016-11-14 | [
[
"Nassif",
"Cláudio",
""
]
] | The paper aims to provide an explanation for the tiny value of the cosmological constant and the low vacuum energy density to represent the dark energy. To accomplish this, we will search for a fundamental principle of symmetry in space-time by means of the elimination of the classical idea of rest, by including an inv... |
gr-qc/0207001 | J. Ponce de Leon | J. Ponce de Leon | Variation of G, $\Lambda_{(4)}$ and Vacuum Energy From Brane-World
Models | In version 2 an error noticed by the author is fixed, and the
corresponding changes are made. Version 3 is identical to v2, except for a
couple of typos corrected. V3 will appear in Mod. Phys. Lett. A | Mod.Phys.Lett. A17 (2002) 2425-2441 | 10.1142/S0217732302009143 | null | gr-qc | null | In brane-world theory in five dimensions, the bulk metric is usually written
in gaussian coordinates, where $g_{4\mu} = 0$ and $g_{44} = - 1$. However, the
choice $g_{44} = - 1$ is an external condition, not a requirement of the field
equations. In this paper we study the consequences of having $g_{44} = \epsilon
\Ph... | [
{
"created": "Sat, 29 Jun 2002 07:25:51 GMT",
"version": "v1"
},
{
"created": "Sun, 17 Nov 2002 22:57:05 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Nov 2002 22:20:27 GMT",
"version": "v3"
}
] | 2015-06-25 | [
[
"de Leon",
"J. Ponce",
""
]
] | In brane-world theory in five dimensions, the bulk metric is usually written in gaussian coordinates, where $g_{4\mu} = 0$ and $g_{44} = - 1$. However, the choice $g_{44} = - 1$ is an external condition, not a requirement of the field equations. In this paper we study the consequences of having $g_{44} = \epsilon \Phi^... |
gr-qc/9607012 | Alessando Fabbri | R. Balbinot and A. Fabbri | Two-dimensional black holes in accelerated frames: quantum aspects | 18 pages, harvmac, 2 figures | Class.Quant.Grav. 14 (1997) 463-476 | 10.1088/0264-9381/14/2/019 | SISSA-ISAS/100/96/EP | gr-qc | null | By considering charged black hole solutions of a one parameter family of two
dimensional dilaton gravity theories, one finds the existence of quantum
mechanically stable gravitational kinks with a simple mass to charge relation.
Unlike their Einsteinian counterpart (i.e. extreme Reissner-Nordstr\"om), these
have nonv... | [
{
"created": "Thu, 4 Jul 1996 17:10:56 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Balbinot",
"R.",
""
],
[
"Fabbri",
"A.",
""
]
] | By considering charged black hole solutions of a one parameter family of two dimensional dilaton gravity theories, one finds the existence of quantum mechanically stable gravitational kinks with a simple mass to charge relation. Unlike their Einsteinian counterpart (i.e. extreme Reissner-Nordstr\"om), these have nonvan... |
2104.00804 | Alex Pandya | Alex Pandya, Frans Pretorius | A numerical exploration of first-order relativistic hydrodynamics | 24 pages, 11 figures; updated to match accepted version (PRD) | Phys. Rev. D 104, 023015 (2021) | 10.1103/PhysRevD.104.023015 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the first numerical solutions of the causal, stable relativistic
Navier-Stokes equations as formulated by Bemfica, Disconzi, Noronha, and Kovtun
(BDNK). For this initial investigation we restrict to plane-symmetric
configurations of a conformal fluid in Minkowski spacetime. We consider
evolution of three c... | [
{
"created": "Thu, 1 Apr 2021 23:36:29 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Jun 2021 15:48:31 GMT",
"version": "v2"
}
] | 2021-07-21 | [
[
"Pandya",
"Alex",
""
],
[
"Pretorius",
"Frans",
""
]
] | We present the first numerical solutions of the causal, stable relativistic Navier-Stokes equations as formulated by Bemfica, Disconzi, Noronha, and Kovtun (BDNK). For this initial investigation we restrict to plane-symmetric configurations of a conformal fluid in Minkowski spacetime. We consider evolution of three cla... |
0804.4348 | Sergei Rubin | S. G. Rubin | Cascade Birth of Universes in Multidimensional Spaces | 10 p., minor corrections | Sov.Phys.JETP.106:715,2008; J.Exp.Theor.Phys.106:714-722,2008 | 10.1134/S1063776108040109 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The formation mechanism of universes with distinctly different properties is
considered within the framework of pure gravity in a space of D > 4 dimensions.
The emergence of the Planck scale and its relationship to the inflaton mass are
discussed.
| [
{
"created": "Mon, 28 Apr 2008 14:38:48 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Rubin",
"S. G.",
""
]
] | The formation mechanism of universes with distinctly different properties is considered within the framework of pure gravity in a space of D > 4 dimensions. The emergence of the Planck scale and its relationship to the inflaton mass are discussed. |
1812.11557 | Salvatore Capozziello | Salvatore Capozziello, Maurizio Capriolo, Loredana Caso | Weak field limit and gravitational waves in higher-order gravity | 21 pages, to appear in Int.J.Geom.Meth.Mod.Phys | Int.J.Geom.Meth.Mod.Phys. (2019) | 10.1142/S0219887819500476 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the weak field limit for a gravitational Lagrangian density
$L_{g}=(R+a_{0}R^{2}+\sum_{k=1}^{p} a_{k}R\Box^{k}R)\sqrt{-g}$ where
higher-order derivative terms in the Ricci scalar $R$ are taken into account.
The interest for this kind of effective theories comes out from the
consideration of the infrared and... | [
{
"created": "Sun, 30 Dec 2018 15:31:27 GMT",
"version": "v1"
},
{
"created": "Sat, 12 Jan 2019 15:32:45 GMT",
"version": "v2"
}
] | 2019-02-11 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Capriolo",
"Maurizio",
""
],
[
"Caso",
"Loredana",
""
]
] | We derive the weak field limit for a gravitational Lagrangian density $L_{g}=(R+a_{0}R^{2}+\sum_{k=1}^{p} a_{k}R\Box^{k}R)\sqrt{-g}$ where higher-order derivative terms in the Ricci scalar $R$ are taken into account. The interest for this kind of effective theories comes out from the consideration of the infrared and u... |
2109.03113 | Hai-Tian Wang | Hai-Tian Wang, Yi-Ming Hu, Peng-Cheng Li, and Yi-Zhong Fan | Probing chromatic onsets of gravitational wave overtones | 6 pages, 3 figures, 1 table, accepted by PRD | null | 10.1103/PhysRevD.105.043012 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The ringdown data of both GW150914 and GW190521\_074359 (GW190521r) show
evidence supporting the presence of overtone. Previous studies all adopt a
fundamental assumption, which were motivated more by convenience than by first
principles, that the first overtone and the fundamental mode share a same
onset. In this wo... | [
{
"created": "Tue, 7 Sep 2021 14:21:48 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Jan 2022 09:29:12 GMT",
"version": "v2"
}
] | 2022-02-22 | [
[
"Wang",
"Hai-Tian",
""
],
[
"Hu",
"Yi-Ming",
""
],
[
"Li",
"Peng-Cheng",
""
],
[
"Fan",
"Yi-Zhong",
""
]
] | The ringdown data of both GW150914 and GW190521\_074359 (GW190521r) show evidence supporting the presence of overtone. Previous studies all adopt a fundamental assumption, which were motivated more by convenience than by first principles, that the first overtone and the fundamental mode share a same onset. In this work... |
1707.09505 | Yuri Pavlov | A. A. Grib, Yu. V. Pavlov | Back reaction of the gravitational radiation on the metric of spacetime | 9 pages, no figures. New version matches the published version,
includes adding references and corrections mainly in section 4 | Int. J. Mod. Phys. D 27 (2018) 1850071 | 10.1142/S0218271818500712 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The problem of back reaction of the gravitational radiation of the two
merging black holes on the metric of the spacetime is investigated. It is shown
for some models that large energy density of the gravitational waves close to
the merger can lead to the disappearance of the visible accretion disc of the
merged pair... | [
{
"created": "Sat, 29 Jul 2017 12:40:19 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Mar 2018 11:13:55 GMT",
"version": "v2"
}
] | 2018-03-07 | [
[
"Grib",
"A. A.",
""
],
[
"Pavlov",
"Yu. V.",
""
]
] | The problem of back reaction of the gravitational radiation of the two merging black holes on the metric of the spacetime is investigated. It is shown for some models that large energy density of the gravitational waves close to the merger can lead to the disappearance of the visible accretion disc of the merged pair o... |
1612.04124 | Nelson Videla Dr. | Nelson Videla | Hamilton-Jacobi approach for quasi-exponential inflation: predictions
and constraints after Planck 2015 results | 21 pages, 4 figures, typos corrected, version accepted for
publication in EPJC. arXiv admin note: text overlap with arXiv:1606.04888 | null | 10.1140/epjc/s10052-017-4711-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work we study the consequences of considering an inflationary
universe model in which the Hubble rate has a quasi-exponential dependence in
the inflaton field, given by $H(\phi)=H_{inf}\exp
\left[\frac{\frac{\phi}{m_p}}{p\left(1+\frac{\phi}{m_p}\right)}\right]$. We
analyze the inflation dynamics under ... | [
{
"created": "Tue, 13 Dec 2016 12:25:52 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Feb 2017 17:52:00 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Feb 2017 13:19:14 GMT",
"version": "v3"
}
] | 2017-04-05 | [
[
"Videla",
"Nelson",
""
]
] | In the present work we study the consequences of considering an inflationary universe model in which the Hubble rate has a quasi-exponential dependence in the inflaton field, given by $H(\phi)=H_{inf}\exp \left[\frac{\frac{\phi}{m_p}}{p\left(1+\frac{\phi}{m_p}\right)}\right]$. We analyze the inflation dynamics under th... |
2305.07060 | Carlos M. Reyes | Carlos M. Reyes and Marco Schreck | The boundary of the gravitational Standard-Model Extension | 17 pages, 1 figure | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A modification of General Relativity that is based on the gravitational
Standard-Model Extension and incorporates nondynamical background fields has
recently been studied via the ADM formalism. Our objective in this paper is to
develop a better understanding of the additional contributions that arise on
the spacetime... | [
{
"created": "Thu, 11 May 2023 18:00:06 GMT",
"version": "v1"
}
] | 2023-05-15 | [
[
"Reyes",
"Carlos M.",
""
],
[
"Schreck",
"Marco",
""
]
] | A modification of General Relativity that is based on the gravitational Standard-Model Extension and incorporates nondynamical background fields has recently been studied via the ADM formalism. Our objective in this paper is to develop a better understanding of the additional contributions that arise on the spacetime b... |
1105.3704 | Norbert Bodendorfer | Norbert Bodendorfer, Thomas Thiemann, Andreas Thurn | New Variables for Classical and Quantum Gravity in all Dimensions II.
Lagrangian Analysis | 42 pages. v2: Journal version. Some nonessential sign errors in
section 2 corrected. Minor clarifications | Class. Quantum Grav. 30 (2013) 045002 | 10.1088/0264-9381/30/4/045002 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We rederive the results of our companion paper, for matching spacetime and
internal signature, by applying in detail the Dirac algorithm to the Palatini
action. While the constraint set of the Palatini action contains second class
constraints, by an appeal to the method of gauge unfixing, we map the second
class syst... | [
{
"created": "Wed, 18 May 2011 18:24:59 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Feb 2013 18:40:52 GMT",
"version": "v2"
}
] | 2013-02-13 | [
[
"Bodendorfer",
"Norbert",
""
],
[
"Thiemann",
"Thomas",
""
],
[
"Thurn",
"Andreas",
""
]
] | We rederive the results of our companion paper, for matching spacetime and internal signature, by applying in detail the Dirac algorithm to the Palatini action. While the constraint set of the Palatini action contains second class constraints, by an appeal to the method of gauge unfixing, we map the second class system... |
gr-qc/0702138 | Hideaki Kudoh | Yu-ichi Takamizu, Hideaki Kudoh, Kei-ichi Maeda | Dynamics of colliding branes and black brane production | 5 pages, 5 figures references added | Phys.Rev.D75:061304,2007 | 10.1103/PhysRevD.75.061304 | null | gr-qc astro-ph hep-ph hep-th | null | We study the dynamics of colliding domain walls including self-gravity. The
initial data is set up by applying a BPS domain wall in five-dimensional
supergravity, and we evolve the system determining the final outcome of
collisions. After a collision, a spacelike curvature singularity covered by a
horizon is formed i... | [
{
"created": "Mon, 26 Feb 2007 21:28:53 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Apr 2007 10:00:25 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Takamizu",
"Yu-ichi",
""
],
[
"Kudoh",
"Hideaki",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | We study the dynamics of colliding domain walls including self-gravity. The initial data is set up by applying a BPS domain wall in five-dimensional supergravity, and we evolve the system determining the final outcome of collisions. After a collision, a spacelike curvature singularity covered by a horizon is formed in ... |
gr-qc/9812051 | WU Zhong Chao | Wu Zhong Chao (Beijing Normal University) | Entropy of Constrained Gravitational Instanton | 8 pages | Gen.Rel.Grav. 31 (1999) 1097-1103 | null | Beijing preprint 98-110 | gr-qc | null | The seeds for quantum creations of universes are constrained gravitational
instantons. For all compact constrained instantons with U(1) isometry, the
period $\beta$ of the group parameter $\tau$ is identified as the reciprocal of
the temperature. If $\beta$ remains a free parameter under the constraints,
then the Euc... | [
{
"created": "Tue, 15 Dec 1998 17:12:16 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Dec 1998 19:03:42 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Chao",
"Wu Zhong",
"",
"Beijing Normal University"
]
] | The seeds for quantum creations of universes are constrained gravitational instantons. For all compact constrained instantons with U(1) isometry, the period $\beta$ of the group parameter $\tau$ is identified as the reciprocal of the temperature. If $\beta$ remains a free parameter under the constraints, then the Eucli... |
0710.0819 | Jannie Leach | Naureen Goheer, Jannie A. Leach and Peter K.S. Dunsby | Compactifying the state space for alternative theories of gravity | 18 pages, revised to match published version | Class.Quant.Grav.25:035013,2008 | 10.1088/0264-9381/25/3/035013 | null | gr-qc astro-ph math.DS | null | In this paper we address important issues surrounding the choice of variables
when performing a dynamical systems analysis of alternative theories of
gravity. We discuss the advantages and disadvantages of compactifying the state
space, and illustrate this using two examples. We first show how to define a
compact sta... | [
{
"created": "Wed, 3 Oct 2007 17:38:23 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Jan 2008 14:49:05 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Goheer",
"Naureen",
""
],
[
"Leach",
"Jannie A.",
""
],
[
"Dunsby",
"Peter K. S.",
""
]
] | In this paper we address important issues surrounding the choice of variables when performing a dynamical systems analysis of alternative theories of gravity. We discuss the advantages and disadvantages of compactifying the state space, and illustrate this using two examples. We first show how to define a compact state... |
1612.08187 | Manuel Hohmann | Manuel Hohmann, Christian Pfeifer | Geodesics and the magnitude-redshift relation on cosmologically
symmetric Finsler spacetimes | 34 pages, no figures; journal version | Phys. Rev. D 95, 104021 (2017) | 10.1103/PhysRevD.95.104021 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the geodesic motion of both massive test particles, following
timelike geodesics, and light, following null geodesics, on Finsler spacetimes
with cosmological symmetry. Using adapted coordinates on the tangent bundle of
the spacetime manifold, we derive the general form of the geodesic equation.
Further, w... | [
{
"created": "Sat, 24 Dec 2016 14:42:08 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jan 2017 18:24:46 GMT",
"version": "v2"
},
{
"created": "Sun, 28 May 2017 05:55:16 GMT",
"version": "v3"
}
] | 2017-05-30 | [
[
"Hohmann",
"Manuel",
""
],
[
"Pfeifer",
"Christian",
""
]
] | We discuss the geodesic motion of both massive test particles, following timelike geodesics, and light, following null geodesics, on Finsler spacetimes with cosmological symmetry. Using adapted coordinates on the tangent bundle of the spacetime manifold, we derive the general form of the geodesic equation. Further, we ... |
2211.10876 | Omar Mustafa | Omar Mustafa | On the Klein-Gordon G\"{u}rses-oscillators and
pseudo-G\"{u}rses-oscillators: vorticity-energy correlations and spacetime
associated degeneracies | 8 pages, 2 figures | Mod. Phys. Lett. A 39 (2024) 2350204 | 10.1142/S0217732323502048 | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We discuss KG-oscillators in the (1+2)-dimensional G\"{u}rses spacetime and
under position-dependent mass (PDM) settings. We observe that the KG-G\"{u}rses
oscillators are introduced as a byproduct of the very nature of the G\"{u}rses
spacetime structure. We report that the energy levels of such KG-G\"{u}rses
oscilla... | [
{
"created": "Sun, 20 Nov 2022 05:40:39 GMT",
"version": "v1"
}
] | 2024-04-24 | [
[
"Mustafa",
"Omar",
""
]
] | We discuss KG-oscillators in the (1+2)-dimensional G\"{u}rses spacetime and under position-dependent mass (PDM) settings. We observe that the KG-G\"{u}rses oscillators are introduced as a byproduct of the very nature of the G\"{u}rses spacetime structure. We report that the energy levels of such KG-G\"{u}rses oscillato... |
gr-qc/9906122 | Julio Cesar Fabris | C.P. Constantinidis(1), J.C. Fabris(1), R.G. Furtado(1) and M.
Picco(1,2) ((1) DF-UFES, Brazil, (2) LPTHE, UPMC, France) | Regular Bouncing Cosmological Solutions in Effective Actions in Four
Dimensions | Latex file, 10 pages, no figure | Phys.Rev. D61 (2000) 043503 | 10.1103/PhysRevD.61.043503 | null | gr-qc | null | We study cosmological scenarios resulting from effective actions in four
dimensions which are, under some assumptions, connected with multidimensional,
supergravity and string theories. These effective actions are labeled by the
parameters $\omega$, the dilaton coupling constant, and $n$ which establishes
the couplin... | [
{
"created": "Wed, 30 Jun 1999 14:14:52 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Constantinidis",
"C. P.",
"",
"DF-UFES, Brazil"
],
[
"Fabris",
"J. C.",
"",
"DF-UFES, Brazil"
],
[
"Furtado",
"R. G.",
"",
"DF-UFES, Brazil"
],
[
"Picco",
"M.",
"",
"DF-UFES, Brazil",
"LPTHE, UPMC, France"
]
] | We study cosmological scenarios resulting from effective actions in four dimensions which are, under some assumptions, connected with multidimensional, supergravity and string theories. These effective actions are labeled by the parameters $\omega$, the dilaton coupling constant, and $n$ which establishes the coupling ... |
1501.03148 | Alexander Shatskiy Doctor | Alexander Shatskiy, I.D. Novikov and Alexandr Malinovsky | Spectrum for the electric dipole which nonradially falling into a black
hole | 15 pages, 3 figures. To appear in IJMPD, 2015 | null | 10.1142/S0218271815500753 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The electromagnetic bremsstrahlung spectrum for the dipole which falling by a
spiral orbit into the Schwarzschild black hole was found. The characteristic
features in this electromagnetic spectrum can be used for determine of the
black hole mass by the new way. This new way (if implemented) provides higher
accuracy i... | [
{
"created": "Sun, 28 Dec 2014 17:02:38 GMT",
"version": "v1"
},
{
"created": "Tue, 26 May 2015 14:00:47 GMT",
"version": "v2"
}
] | 2015-08-26 | [
[
"Shatskiy",
"Alexander",
""
],
[
"Novikov",
"I. D.",
""
],
[
"Malinovsky",
"Alexandr",
""
]
] | The electromagnetic bremsstrahlung spectrum for the dipole which falling by a spiral orbit into the Schwarzschild black hole was found. The characteristic features in this electromagnetic spectrum can be used for determine of the black hole mass by the new way. This new way (if implemented) provides higher accuracy in ... |
0707.1816 | {\L}ukasz Szulc | Lukasz Szulc | Open FRW model in Loop Quantum Cosmology | 12 pages, no figures, latex | Class.Quant.Grav.24:6191-6200,2007 | 10.1088/0264-9381/24/24/003 | null | gr-qc | null | Open FRW model in Loop Quantum Cosmology is under consideration. The left and
right invariant vector fields and holonomies along them are studied. It is
shown that in the hyperbolic geometry of $k=-1$ it is possible to construct a
suitable loop which provides us with quantum scalar constraint originally
introduced by... | [
{
"created": "Thu, 12 Jul 2007 15:51:37 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Jul 2007 08:44:09 GMT",
"version": "v2"
},
{
"created": "Mon, 29 Oct 2007 13:05:18 GMT",
"version": "v3"
},
{
"created": "Tue, 29 Jan 2008 16:57:08 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Szulc",
"Lukasz",
""
]
] | Open FRW model in Loop Quantum Cosmology is under consideration. The left and right invariant vector fields and holonomies along them are studied. It is shown that in the hyperbolic geometry of $k=-1$ it is possible to construct a suitable loop which provides us with quantum scalar constraint originally introduced by V... |
1301.5558 | Steinar Johannesen | Oyvind Gron and Steinar Johannesen | Different representations of the Levi-Civita Bertotti Robinson solution | 58 pages, 9 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Levi-Civita Bertotti Robinson (LBR) spacetime is investigated in various
coordinate systems. By means of a general formalism for constructing
coordinates in conformally flat spacetimes, coordinate transformations between
the different coordinate systems are deduced. We discuss the motion of the
reference frames i... | [
{
"created": "Wed, 23 Jan 2013 16:42:22 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Jan 2013 18:30:26 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Mar 2013 15:31:11 GMT",
"version": "v3"
}
] | 2013-03-07 | [
[
"Gron",
"Oyvind",
""
],
[
"Johannesen",
"Steinar",
""
]
] | The Levi-Civita Bertotti Robinson (LBR) spacetime is investigated in various coordinate systems. By means of a general formalism for constructing coordinates in conformally flat spacetimes, coordinate transformations between the different coordinate systems are deduced. We discuss the motion of the reference frames in ... |
1501.04990 | Bivudutta Mishra Dr. | S. K. Tripathy, B. Mishra, G. K. Pandey, A. K. Singh, T. Kumar,
S.S.Xulu | Energy and momentum of Bianchi Type VI_h Universes | null | Advances in High Energy Physics, 2015, 705262(2015) | 10.1155/2015/705262 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain the energy and momentum of the Bianchi type VI_h universes using
different prescriptions for the energy-momentum complexes in the framework of
general relativity. The energy and momentum of the Bianchi VI_h universe are
found to be zero for the parameter h = -1 of the metric. The vanishing of these
results ... | [
{
"created": "Mon, 19 Jan 2015 10:14:39 GMT",
"version": "v1"
}
] | 2017-05-10 | [
[
"Tripathy",
"S. K.",
""
],
[
"Mishra",
"B.",
""
],
[
"Pandey",
"G. K.",
""
],
[
"Singh",
"A. K.",
""
],
[
"Kumar",
"T.",
""
],
[
"Xulu",
"S. S.",
""
]
] | We obtain the energy and momentum of the Bianchi type VI_h universes using different prescriptions for the energy-momentum complexes in the framework of general relativity. The energy and momentum of the Bianchi VI_h universe are found to be zero for the parameter h = -1 of the metric. The vanishing of these results su... |
gr-qc/0609045 | David Garfinkle | David Garfinkle | Matters of Gravity, The Newsletter of the Topical Group in Gravitation
of the American Physical Society, Volume 28, Fall 2006 | 20 pages. David Garfinkle (Editor) | null | null | null | gr-qc | null | Research Briefs:
Singularity Avoidance in Canonical Quantum Gravity, by Viqar Husain
What's New in LIGO, by David Shoemaker
Conference reports:
Scanning New Horizons: GR Beyond 4 dimensions, by Donald Marolf
Quantum Gravity in the Americas III, by Jorge Pullin
New Frontiers in Numerical Relativity, by Luc... | [
{
"created": "Wed, 13 Sep 2006 16:13:05 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Garfinkle",
"David",
""
]
] | Research Briefs: Singularity Avoidance in Canonical Quantum Gravity, by Viqar Husain What's New in LIGO, by David Shoemaker Conference reports: Scanning New Horizons: GR Beyond 4 dimensions, by Donald Marolf Quantum Gravity in the Americas III, by Jorge Pullin New Frontiers in Numerical Relativity, by Luciano Rezzolla ... |
2105.12766 | Miguel Cruz | Azucena Bola\~nos, Miguel Cruz, Samuel Lepe and David Rogelio
M\'arquez-Castillo | Holographic dark energy in curved spacetime for interacting fluids | 26 pages, 7 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we explore the scope of two holographic dark energy models
within the interacting scenario for the dark sector and spatial curvature. For
one holographic model we consider the usual formula for the dark energy density
with the Hubble scale and the second model is given in terms of a function
instead of a... | [
{
"created": "Wed, 26 May 2021 18:06:24 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Jun 2021 01:17:38 GMT",
"version": "v2"
},
{
"created": "Sat, 27 Nov 2021 00:49:40 GMT",
"version": "v3"
},
{
"created": "Wed, 23 Feb 2022 02:45:28 GMT",
"version": "v4"
},
{
"c... | 2023-05-10 | [
[
"Bolaños",
"Azucena",
""
],
[
"Cruz",
"Miguel",
""
],
[
"Lepe",
"Samuel",
""
],
[
"Márquez-Castillo",
"David Rogelio",
""
]
] | In this work we explore the scope of two holographic dark energy models within the interacting scenario for the dark sector and spatial curvature. For one holographic model we consider the usual formula for the dark energy density with the Hubble scale and the second model is given in terms of a function instead of a c... |
1311.5325 | Jian-Yang Zhu | Kui Xiao, Xiao-Kai He and Jian-Yang Zhu | Note on the super inflation in loop quantum cosmology | 9 pages, 4 figures. Physics Letters B, online publication complete:
13-NOV-2013 | Physics Letters B 727, 349-356 (2013) | 10.1016/j.physletb.2013.10.071 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Phenomenological effect of the super-inflation in loop quantum cosmology
(LQC) is discussed. We investigate the case that the Universe is filled with
the interacting field between massive scalar field and radiation. Considering
the damping coefficient $\Gamma$ as a constant, the changes of the scale factor
during sup... | [
{
"created": "Thu, 21 Nov 2013 07:57:09 GMT",
"version": "v1"
}
] | 2013-11-28 | [
[
"Xiao",
"Kui",
""
],
[
"He",
"Xiao-Kai",
""
],
[
"Zhu",
"Jian-Yang",
""
]
] | Phenomenological effect of the super-inflation in loop quantum cosmology (LQC) is discussed. We investigate the case that the Universe is filled with the interacting field between massive scalar field and radiation. Considering the damping coefficient $\Gamma$ as a constant, the changes of the scale factor during super... |
gr-qc/0209049 | Zhongchao Wu | Zhong Chao Wu (Zhejiang U. of Technology) | Dispelling the Anthropic Principle from the Dimensionality Arguments | 7 pages, Essay | Chin.Phys.Lett. 19 (2002) 1749 | 10.1088/0256-307X/19/12/303 | ZUT-02-1 | gr-qc astro-ph hep-ph hep-th | null | It is shown that in d=11 supergravity, under a very reasonable ansatz, the
nearly flat spacetime in which we are living must be 4-dimensional without
appealing to the Anthropic Principle. Can we dispel the Anthropic Principle
completely from cosmology?
| [
{
"created": "Mon, 16 Sep 2002 16:55:07 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Wu",
"Zhong Chao",
"",
"Zhejiang U. of Technology"
]
] | It is shown that in d=11 supergravity, under a very reasonable ansatz, the nearly flat spacetime in which we are living must be 4-dimensional without appealing to the Anthropic Principle. Can we dispel the Anthropic Principle completely from cosmology? |
1709.02276 | Fay\c{c}al Hammad | Fay\c{c}al Hammad | Density perturbations in $f(R,\phi)$-gravity with an application to the
(varying power)-law model | 12 pp. Matches the published version | Phys. Rev. D 96, 064006 (2017) | 10.1103/PhysRevD.96.064006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Density perturbations in the cosmic microwave background within general
$f(R,\phi)$ models of gravity are investigated. The general dynamical equations
for the tensor and scalar modes in any $f(R,\phi)$ gravity model are derived.
An application of the equations to the (varying power)-law modified gravity
toy-model is... | [
{
"created": "Wed, 6 Sep 2017 17:20:27 GMT",
"version": "v1"
}
] | 2017-10-11 | [
[
"Hammad",
"Fayçal",
""
]
] | Density perturbations in the cosmic microwave background within general $f(R,\phi)$ models of gravity are investigated. The general dynamical equations for the tensor and scalar modes in any $f(R,\phi)$ gravity model are derived. An application of the equations to the (varying power)-law modified gravity toy-model is t... |
1503.05102 | Patryk Mach | Patryk Mach | Homoclinic accretion solutions in the Schwarzschild-anti-de Sitter
spacetime | 6 pages, 2 figures, to appear in Physical Review D | null | 10.1103/PhysRevD.91.084016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The aim of this paper is to clarify the distinction between homoclinic and
standard (global) Bondi-type accretion solutions in the Schwarzschild-anti-de
Sitter spacetime. The homoclinic solutions have recently been discovered
numerically for polytropic equations of state. Here I show that they exist also
for certain ... | [
{
"created": "Tue, 17 Mar 2015 15:52:08 GMT",
"version": "v1"
}
] | 2015-06-24 | [
[
"Mach",
"Patryk",
""
]
] | The aim of this paper is to clarify the distinction between homoclinic and standard (global) Bondi-type accretion solutions in the Schwarzschild-anti-de Sitter spacetime. The homoclinic solutions have recently been discovered numerically for polytropic equations of state. Here I show that they exist also for certain is... |
2307.00063 | David Brizuela | Martin Bojowald, David Brizuela, Paula Calizaya Cabrera, Sara F. Uria | The chaotic behavior of the Bianchi IX model under the influence of
quantum effects | 22 pages, 4 figures. Version accepted for publication | Phys.Rev.D 109 (2024) 4, 044038 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A quantum analysis of the vacuum Bianchi IX model is performed, focusing in
particular on the chaotic nature of the system. The framework constructed here
is general enough for the results to apply in the context of any theory of
quantum gravity, since it includes only minimal approximations that make it
possible to ... | [
{
"created": "Fri, 30 Jun 2023 18:06:07 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Apr 2024 10:10:18 GMT",
"version": "v2"
}
] | 2024-04-17 | [
[
"Bojowald",
"Martin",
""
],
[
"Brizuela",
"David",
""
],
[
"Cabrera",
"Paula Calizaya",
""
],
[
"Uria",
"Sara F.",
""
]
] | A quantum analysis of the vacuum Bianchi IX model is performed, focusing in particular on the chaotic nature of the system. The framework constructed here is general enough for the results to apply in the context of any theory of quantum gravity, since it includes only minimal approximations that make it possible to en... |
2407.04975 | Gideon Koekoek | Richard Kerner, Gideon Koekoek, Julia Schuring, Jan-Willem van Holten | Polar magnetic fields in black-hole space-times | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | To model magnetic fields of compact objects we solve the Maxwell equations in
the background of the exterior static Schwarzschild and slowly rotating Kerr
space-times. We impose the boundary condition that the electromagnetic fields
are to vanish at infinity. A full set of solutions is obtained, describing
axially sy... | [
{
"created": "Sat, 6 Jul 2024 06:55:52 GMT",
"version": "v1"
}
] | 2024-07-09 | [
[
"Kerner",
"Richard",
""
],
[
"Koekoek",
"Gideon",
""
],
[
"Schuring",
"Julia",
""
],
[
"van Holten",
"Jan-Willem",
""
]
] | To model magnetic fields of compact objects we solve the Maxwell equations in the background of the exterior static Schwarzschild and slowly rotating Kerr space-times. We impose the boundary condition that the electromagnetic fields are to vanish at infinity. A full set of solutions is obtained, describing axially symm... |
0708.0723 | Salvatore Capozziello | S. Capozziello, A. Stabile, A. Troisi | The Newtonian Limit of F(R) gravity | 16 pages | Phys.Rev.D76:104019,2007 | 10.1103/PhysRevD.76.104019 | null | gr-qc astro-ph | null | A general analytic procedure is developed to deal with the Newtonian limit of
$f(R)$ gravity. A discussion comparing the Newtonian and the post-Newtonian
limit of these models is proposed in order to point out the differences between
the two approaches. We calculate the post-Newtonian parameters of such theories
with... | [
{
"created": "Mon, 6 Aug 2007 08:46:02 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Aug 2007 08:22:24 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Capozziello",
"S.",
""
],
[
"Stabile",
"A.",
""
],
[
"Troisi",
"A.",
""
]
] | A general analytic procedure is developed to deal with the Newtonian limit of $f(R)$ gravity. A discussion comparing the Newtonian and the post-Newtonian limit of these models is proposed in order to point out the differences between the two approaches. We calculate the post-Newtonian parameters of such theories withou... |
1912.06891 | Olivier Minazzoli | Olivier Minazzoli | Strong lensing in multimessenger astronomy as a test of the equivalence
principle | 3 pages. Few improvements of the text in this new version | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Standard Shapiro delay-based test of the equivalence principle, which are
grounded on the measurement of two arrival times from a unique source but from
messengers with different properties, cannot produce a reliable quantitative
test of the Einstein equivalence principle. Essentially because they are based
on the es... | [
{
"created": "Sat, 14 Dec 2019 17:42:40 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Feb 2020 09:56:19 GMT",
"version": "v2"
}
] | 2020-02-14 | [
[
"Minazzoli",
"Olivier",
""
]
] | Standard Shapiro delay-based test of the equivalence principle, which are grounded on the measurement of two arrival times from a unique source but from messengers with different properties, cannot produce a reliable quantitative test of the Einstein equivalence principle. Essentially because they are based on the esti... |
1712.06072 | Sai Wang | Sai Wang | Exploring the CPT violation and birefringence of gravitational waves
with ground- and space-based gravitational-wave interferometers | Preprint, 16 pages, 1 figure, 1 table, 2 appendices. All comments are
welcome | null | 10.1140/epjc/s10052-020-7812-2 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the gravitational sector, we study the CPT violation and birefringence of
gravitational waves. In presence of the CPT violation, a relative dephasing is
generated between two circular polarization states of gravitational waves. This
effect induces the birefringence of gravitational waves. We predict the
gravitatio... | [
{
"created": "Sun, 17 Dec 2017 08:42:26 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Dec 2017 03:42:21 GMT",
"version": "v2"
},
{
"created": "Thu, 28 Dec 2017 12:11:06 GMT",
"version": "v3"
},
{
"created": "Tue, 19 Nov 2019 10:38:38 GMT",
"version": "v4"
}
] | 2020-03-13 | [
[
"Wang",
"Sai",
""
]
] | In the gravitational sector, we study the CPT violation and birefringence of gravitational waves. In presence of the CPT violation, a relative dephasing is generated between two circular polarization states of gravitational waves. This effect induces the birefringence of gravitational waves. We predict the gravitationa... |
gr-qc/0211082 | Roy Maartens | George Ellis, Roy Maartens | The Emergent Universe: inflationary cosmology with no singularity | minor changes; version to appear in Class Q Grav | Class.Quant.Grav.21:223-232,2004 | 10.1088/0264-9381/21/1/015 | null | gr-qc astro-ph | null | Observations indicate that the universe is effectively flat, but they do not
rule out a closed universe. The role of positive curvature is negligible at
late times, but can be crucial in the early universe. In particular, positive
curvature allows for cosmologies that originate as Einstein static universes,
and then ... | [
{
"created": "Mon, 25 Nov 2002 14:53:59 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Jun 2003 12:12:08 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Aug 2003 14:17:19 GMT",
"version": "v3"
},
{
"created": "Sat, 25 Oct 2003 10:15:41 GMT",
"version": "v4"
}
] | 2010-04-06 | [
[
"Ellis",
"George",
""
],
[
"Maartens",
"Roy",
""
]
] | Observations indicate that the universe is effectively flat, but they do not rule out a closed universe. The role of positive curvature is negligible at late times, but can be crucial in the early universe. In particular, positive curvature allows for cosmologies that originate as Einstein static universes, and then in... |
2009.03625 | Marko Sossich | Petar Pavlovi\'c and Marko Sossich | Dynamic properties of cyclic cosmologies | 45 pages, 6 figures | Phys. Rev. D 103, 023529 (2021) | 10.1103/PhysRevD.103.023529 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Our first goal in this work is to study general and model-independent
properties of cyclic cosmologies. The large number of studies of bouncing
cosmologies and different cyclic scenarios published recently calls for a
proper understanding of the universal properties of cyclic models. We thus
first review and further ... | [
{
"created": "Tue, 8 Sep 2020 10:05:14 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Sep 2020 09:01:49 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Oct 2021 12:32:54 GMT",
"version": "v3"
}
] | 2021-10-11 | [
[
"Pavlović",
"Petar",
""
],
[
"Sossich",
"Marko",
""
]
] | Our first goal in this work is to study general and model-independent properties of cyclic cosmologies. The large number of studies of bouncing cosmologies and different cyclic scenarios published recently calls for a proper understanding of the universal properties of cyclic models. We thus first review and further el... |
1712.09977 | Stefanos Aretakis | Yannis Angelopoulos, Stefanos Aretakis, Dejan Gajic | Logarithmic corrections in the asymptotic expansion for the radiation
field along null infinity | 32 pages, 4 figures | Journal of Hyperbolic Differential Equations, 16 (01), 1-34 (2019) | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain the second-order asymptotics for the radiation field of spherically
symmetric solutions to the wave equation on spherically symmetric and
asymptotically flat backgrounds including the Schwarzschild and sub-extremal
Reissner-Nordstrom families of black holes. These terms appear as logarithmic
corrections to ... | [
{
"created": "Thu, 28 Dec 2017 18:38:53 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Mar 2021 22:18:26 GMT",
"version": "v2"
}
] | 2021-03-03 | [
[
"Angelopoulos",
"Yannis",
""
],
[
"Aretakis",
"Stefanos",
""
],
[
"Gajic",
"Dejan",
""
]
] | We obtain the second-order asymptotics for the radiation field of spherically symmetric solutions to the wave equation on spherically symmetric and asymptotically flat backgrounds including the Schwarzschild and sub-extremal Reissner-Nordstrom families of black holes. These terms appear as logarithmic corrections to th... |
2406.15843 | Antoine Rignon-Bret | Antoine Rignon-Bret | Black hole thermodynamic potentials for asymptotic observers | 25 pages + references, 6 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The generalized second law states the total entropy of any closed system as
the universe cannot decrease if we include black hole entropy. From the point
of view of an asymptotic observer, a black hole can be described at late time
as an open system at fixed temperature which can radiate energy and entropy to
infinit... | [
{
"created": "Sat, 22 Jun 2024 13:14:13 GMT",
"version": "v1"
}
] | 2024-06-25 | [
[
"Rignon-Bret",
"Antoine",
""
]
] | The generalized second law states the total entropy of any closed system as the universe cannot decrease if we include black hole entropy. From the point of view of an asymptotic observer, a black hole can be described at late time as an open system at fixed temperature which can radiate energy and entropy to infinity.... |
2011.09266 | Anil Yadav dr | Anil Kumar Yadav, A. M. Alshehri, Nafis Ahmad, G. K. Goswami, Mukesh
Kumar | Transitioning Universe with hybrid scalar field in Bianchi I space-time | 11 pages, 9 figures | Physics of the Dark Universe 31 (2021) 100738 | 10.1016/j.dark.2020.100738 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we investigate a Bianchi type I transitioning Universe in
Brans-Dicke theory. To get an explicit solution of the field equations, we
assume scalar field as $\phi = \phi_{0}\left[t^{\alpha}exp(\beta
t)\right]^{\delta}$ with $\phi_{0}$, $\alpha$, $\beta$ and $\delta$ as
constants. The values of $\alpha$ a... | [
{
"created": "Mon, 16 Nov 2020 15:08:59 GMT",
"version": "v1"
}
] | 2020-11-19 | [
[
"Yadav",
"Anil Kumar",
""
],
[
"Alshehri",
"A. M.",
""
],
[
"Ahmad",
"Nafis",
""
],
[
"Goswami",
"G. K.",
""
],
[
"Kumar",
"Mukesh",
""
]
] | In this paper we investigate a Bianchi type I transitioning Universe in Brans-Dicke theory. To get an explicit solution of the field equations, we assume scalar field as $\phi = \phi_{0}\left[t^{\alpha}exp(\beta t)\right]^{\delta}$ with $\phi_{0}$, $\alpha$, $\beta$ and $\delta$ as constants. The values of $\alpha$ and... |
gr-qc/9602057 | Jacob D. Bekenstein | Avraham E. Mayo and Jacob D. Bekenstein | No hair for spherical black holes: charged and nonminimally coupled
scalar field with self--interaction | 30 pages, RevTeX. Sec.IV corrected, simplified and shortened.
Corrections to Sec.IIA between Eqs. 2.7 and Eq.2.1. First two paragraphs of
Sec. VC new. To appear Phys. Rev. D, Oct. 15, 1996 | Phys.Rev. D54 (1996) 5059-5069 | 10.1103/PhysRevD.54.5059 | null | gr-qc astro-ph hep-th | null | We prove three theorems in general relativity which rule out classical scalar
hair of static, spherically symmetric, possibly electrically charged black
holes. We first generalize Bekenstein's no--hair theorem for a multiplet of
minimally coupled real scalar fields with not necessarily quadratic action to
the case of... | [
{
"created": "Wed, 28 Feb 1996 08:12:00 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Aug 1996 09:37:00 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Mayo",
"Avraham E.",
""
],
[
"Bekenstein",
"Jacob D.",
""
]
] | We prove three theorems in general relativity which rule out classical scalar hair of static, spherically symmetric, possibly electrically charged black holes. We first generalize Bekenstein's no--hair theorem for a multiplet of minimally coupled real scalar fields with not necessarily quadratic action to the case of a... |
1706.08889 | Alexey Toporensky | D.M. Chirkov, A.V. Toporensky | On stable exponential cosmological solutions in the EGB model with a
$\Lambda$-term in dimensions D = 5,6,7,8 | 11 pages, no figures. arXiv admin note: text overlap with
arXiv:1612.08451 by other authors | Gravitation and Cosmology 23, 4, 359 (2017) | 10.1134/S0202289317040077 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A $D$-dimensional Einstein-Gauss-Bonnet (EGB) flat cosmological model with a
cosmological term $\Lambda$ is considered. We focus on solutions with
exponential dependence of scale factor on time. Using previously developed
general analysis of stability of such solutions done by V.D.Ivashchuk (2016) we
apply the criter... | [
{
"created": "Mon, 26 Jun 2017 16:07:26 GMT",
"version": "v1"
}
] | 2018-07-16 | [
[
"Chirkov",
"D. M.",
""
],
[
"Toporensky",
"A. V.",
""
]
] | A $D$-dimensional Einstein-Gauss-Bonnet (EGB) flat cosmological model with a cosmological term $\Lambda$ is considered. We focus on solutions with exponential dependence of scale factor on time. Using previously developed general analysis of stability of such solutions done by V.D.Ivashchuk (2016) we apply the criterio... |
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