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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1310.2185 | Raissa Mendes | Raissa F. P. Mendes, George E. A. Matsas, and Daniel A. T. Vanzella | Quantum versus classical instability of scalar fields in curved
backgrounds | 5 pages, 1 figure; condensed and revised version matching published
one | Phys. Rev. D 89, 047503 (2014) | 10.1103/PhysRevD.89.047503 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General-relativistic stable spacetimes can be made unstable under the
presence of certain nonminimally coupled free scalar fields. In this paper, we
analyze the evolution of linear scalar-field perturbations in spherically
symmetric spacetimes and compare the classical stability analysis with a
recently discussed qua... | [
{
"created": "Tue, 8 Oct 2013 15:53:37 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Mar 2014 14:34:20 GMT",
"version": "v2"
}
] | 2014-03-11 | [
[
"Mendes",
"Raissa F. P.",
""
],
[
"Matsas",
"George E. A.",
""
],
[
"Vanzella",
"Daniel A. T.",
""
]
] | General-relativistic stable spacetimes can be made unstable under the presence of certain nonminimally coupled free scalar fields. In this paper, we analyze the evolution of linear scalar-field perturbations in spherically symmetric spacetimes and compare the classical stability analysis with a recently discussed quant... |
2202.03426 | Hristu Culetu | Hristu Culetu | A Vaidya-type spacetime with no singularities | 13 pages, no figures, version accepted for publication in Int. J.
Mod. Phys. D, https://doi.org/10.1142/S0218271822501243 | null | 10.1142/S0218271822501243 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A regular Vaidya-type line-element is proposed in this work. The mass
function depends both on the temporal and the spatial coordinates. The
curvature invariants and the source stress tensor $T^{a}_{~b}$ are finite in
the whole space. The energy conditions for $T^{a}_{~b}$ are satisfied if
$k^{2}<2vr$, where $k$ is a... | [
{
"created": "Sat, 5 Feb 2022 23:11:16 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Oct 2022 19:38:19 GMT",
"version": "v2"
}
] | 2023-01-25 | [
[
"Culetu",
"Hristu",
""
]
] | A regular Vaidya-type line-element is proposed in this work. The mass function depends both on the temporal and the spatial coordinates. The curvature invariants and the source stress tensor $T^{a}_{~b}$ are finite in the whole space. The energy conditions for $T^{a}_{~b}$ are satisfied if $k^{2}<2vr$, where $k$ is a p... |
1206.0923 | Santanu Das | Santanu Das | Mach's principle and the origin of the quantum phenomenon | 13 pages | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Concept of inertial mass is not well defined in physics. For defining
inertial mass of a particle we need to know its acceleration under some force
in an inertial reference frame, which itself is defined by the motion of its
background objects. Therefore, the inertial mass of a particle is not
completely its intrinsi... | [
{
"created": "Mon, 4 Jun 2012 16:57:45 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Feb 2015 11:11:08 GMT",
"version": "v2"
}
] | 2015-02-17 | [
[
"Das",
"Santanu",
""
]
] | Concept of inertial mass is not well defined in physics. For defining inertial mass of a particle we need to know its acceleration under some force in an inertial reference frame, which itself is defined by the motion of its background objects. Therefore, the inertial mass of a particle is not completely its intrinsic ... |
1808.03418 | Hideyoshi Arakida | Hideyoshi Arakida | General Relativistic Aberration Equation and Measurable Angle of Light
Ray in Kerr Spacetime | 17 pages, 4 figures | International Journal of Modern Physics DVol. 30, No. 06, 2150045
(2021) | 10.1142/S0218271821500450 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We will mainly discuss the measurable angle (local angle) of the light ray
$\psi_P$ at the position of the observer $P$ instead of the total deflection
angle (global angle) $\alpha$ in Kerr spacetime. We will investigate not only
the effect of the gravito-magnetic field or frame dragging but also the
contribution of ... | [
{
"created": "Fri, 10 Aug 2018 05:51:05 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Aug 2018 00:25:34 GMT",
"version": "v2"
},
{
"created": "Wed, 11 Mar 2020 02:17:04 GMT",
"version": "v3"
},
{
"created": "Fri, 22 Jan 2021 05:26:51 GMT",
"version": "v4"
}
] | 2021-05-06 | [
[
"Arakida",
"Hideyoshi",
""
]
] | We will mainly discuss the measurable angle (local angle) of the light ray $\psi_P$ at the position of the observer $P$ instead of the total deflection angle (global angle) $\alpha$ in Kerr spacetime. We will investigate not only the effect of the gravito-magnetic field or frame dragging but also the contribution of th... |
1304.1702 | Andrea Vicer\'e | Flavio Vetrano, Andrea Vicer\'e | Newtonian noise limit in atom interferometers for gravitational wave
detection | 14 pages, 4 figures | The European Physical Journal C 73 (2013) 2590 | 10.1140/epjc/s10052-013-2590-8 | null | gr-qc physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study the influence of the newtonian noise on atom
interferometers applied to the detection of gravitational waves, and we compute
the resulting limits to the sensitivity in two different configurations: a
single atom interferometer, or a pair of atom interferometers operated in a
differential configu... | [
{
"created": "Fri, 5 Apr 2013 13:12:19 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Jun 2013 16:36:20 GMT",
"version": "v2"
},
{
"created": "Tue, 15 Oct 2013 20:38:12 GMT",
"version": "v3"
}
] | 2013-10-17 | [
[
"Vetrano",
"Flavio",
""
],
[
"Viceré",
"Andrea",
""
]
] | In this work we study the influence of the newtonian noise on atom interferometers applied to the detection of gravitational waves, and we compute the resulting limits to the sensitivity in two different configurations: a single atom interferometer, or a pair of atom interferometers operated in a differential configura... |
1811.01707 | Farook Rahaman | Faizuddin Ahmed, Farook Rahaman and Susmita Sarkar | Black holes/naked singularities in four-dimensional non-static
space-time and the energy-momentum distributions | 18 pages, 6 figures. Accepted in EPJA. arXiv admin note: text overlap
with arXiv:gr-qc/0309002 by other authors | null | 10.1140/epja/i2018-12650-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we discuss four dimensional non-static space-times in the
background of de-Sitter and anti-de Sitter spaces with the matter-energy
sources a stiff fluid, anisotropic fluid, and an electromagnetic field. Under
various parameter conditions the solutions may represent models of naked
singularity and/or ... | [
{
"created": "Thu, 1 Nov 2018 18:16:41 GMT",
"version": "v1"
}
] | 2019-01-30 | [
[
"Ahmed",
"Faizuddin",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Sarkar",
"Susmita",
""
]
] | In this article, we discuss four dimensional non-static space-times in the background of de-Sitter and anti-de Sitter spaces with the matter-energy sources a stiff fluid, anisotropic fluid, and an electromagnetic field. Under various parameter conditions the solutions may represent models of naked singularity and/or bl... |
2408.03016 | Dong-han Yeom | Xiao Yan Chew, Il Gyeong Choi, Hyuk Jung Kim, Dong-han Yeom | Can a naked singularity be formed during the gravitational collapse of a
Janis-Newman-Winicour solution? | 13 pages, 6 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The Janis-Newman-Winicour (JNW) spacetime possesses a naked singularity,
although it represents an exact particle-like solution to the
Einstein-Klein-Gordon theory with a massless scalar field. Here, we investigate
the possible formation of a naked singularity in the JNW spacetime, using the
thin-shell approximation ... | [
{
"created": "Tue, 6 Aug 2024 07:56:28 GMT",
"version": "v1"
}
] | 2024-08-07 | [
[
"Chew",
"Xiao Yan",
""
],
[
"Choi",
"Il Gyeong",
""
],
[
"Kim",
"Hyuk Jung",
""
],
[
"Yeom",
"Dong-han",
""
]
] | The Janis-Newman-Winicour (JNW) spacetime possesses a naked singularity, although it represents an exact particle-like solution to the Einstein-Klein-Gordon theory with a massless scalar field. Here, we investigate the possible formation of a naked singularity in the JNW spacetime, using the thin-shell approximation to... |
1108.4385 | Ujjal Debnath | Surajit Chattopadhyay, Ujjal Debnath and Samarpita Bhattacharya | Study of Thermodynamic Quantities in Generalized Gravity Theories | 15 pages, 12 figures | null | 10.1007/s10773-012-1198-3 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we have studied the thermodynamic quantities like temperature
of the universe, heat capacity and squared speed of sound in generalized
gravity theories like Brans-Dicke, Ho$\check{\text r}$ava-Lifshitz and $f(R)$
gravities. We have considered the universe filled with dark matter and dark
energy. Also we... | [
{
"created": "Mon, 22 Aug 2011 17:40:47 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Chattopadhyay",
"Surajit",
""
],
[
"Debnath",
"Ujjal",
""
],
[
"Bhattacharya",
"Samarpita",
""
]
] | In this work, we have studied the thermodynamic quantities like temperature of the universe, heat capacity and squared speed of sound in generalized gravity theories like Brans-Dicke, Ho$\check{\text r}$ava-Lifshitz and $f(R)$ gravities. We have considered the universe filled with dark matter and dark energy. Also we h... |
1306.1176 | Jorge Paramos | Orfeu Bertolami, Riccardo March, Jorge P\'aramos | Solar System constraints to nonminimally coupled gravity | 13 pages, 3 figures | null | 10.1103/PhysRevD.88.064019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the analysis of Chiba, Smith and Erickcek \cite{CSE} of Solar
System constraints on $f(R)$ gravity to a class of nonminimally coupled (NMC)
theories of gravity. These generalize $f(R)$ theories by replacing the action
functional of General Relativity (GR) with a more general form involving two
functions $f^... | [
{
"created": "Wed, 5 Jun 2013 17:10:51 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Bertolami",
"Orfeu",
""
],
[
"March",
"Riccardo",
""
],
[
"Páramos",
"Jorge",
""
]
] | We extend the analysis of Chiba, Smith and Erickcek \cite{CSE} of Solar System constraints on $f(R)$ gravity to a class of nonminimally coupled (NMC) theories of gravity. These generalize $f(R)$ theories by replacing the action functional of General Relativity (GR) with a more general form involving two functions $f^1(... |
1111.1252 | Christopher Duston | Christopher L. Duston | Topspin Networks in Loop Quantum Gravity | 33 pages, significantly updated and improved | Classical and Quantum Gravity 29 (2012) 205015 | 10.1088/0264-9381/29/20/205015 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the extension of loop quantum gravity to topspin networks, a
proposal which allows topological information to be encoded in spin networks.
We will show that this requires minimal changes to the phase space, C*-algebra
and Hilbert space of cylindrical functions. We will also discuss the area and
Hamiltonian... | [
{
"created": "Fri, 4 Nov 2011 21:13:09 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Apr 2012 21:15:22 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"Duston",
"Christopher L.",
""
]
] | We discuss the extension of loop quantum gravity to topspin networks, a proposal which allows topological information to be encoded in spin networks. We will show that this requires minimal changes to the phase space, C*-algebra and Hilbert space of cylindrical functions. We will also discuss the area and Hamiltonian o... |
1209.0635 | Agnes Fienga | A. Fienga | Planetary ephemerides and gravity tests in the solar system | Proceedings of the Rencontres de Moriond 2011 | null | null | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review here the tests of fundamental physics based on the dynamics of
solar system objects.
| [
{
"created": "Tue, 4 Sep 2012 13:04:53 GMT",
"version": "v1"
}
] | 2012-09-05 | [
[
"Fienga",
"A.",
""
]
] | We review here the tests of fundamental physics based on the dynamics of solar system objects. |
1710.05606 | Katsuki Aoki | Katsuki Aoki, Kei-ichi Maeda, Yosuke Misonoh, and Hirotada Okawa | Massive Graviton Geons | 16 pages, 7 tables, 3 figures; v2: references added, improved
discussion, published version | Phys. Rev. D 97, 044005 (2018) | 10.1103/PhysRevD.97.044005 | WU-AP/1705/17 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find vacuum solutions such that massive gravitons are confined in a local
spacetime region by their gravitational energy in asymptotically flat
spacetimes in the context of the bigravity theory. We call such
self-gravitating objects massive graviton geons. The basic equations can be
reduced to the Schr\"odinger-Po... | [
{
"created": "Mon, 16 Oct 2017 10:26:00 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Feb 2018 06:06:04 GMT",
"version": "v2"
}
] | 2018-02-14 | [
[
"Aoki",
"Katsuki",
""
],
[
"Maeda",
"Kei-ichi",
""
],
[
"Misonoh",
"Yosuke",
""
],
[
"Okawa",
"Hirotada",
""
]
] | We find vacuum solutions such that massive gravitons are confined in a local spacetime region by their gravitational energy in asymptotically flat spacetimes in the context of the bigravity theory. We call such self-gravitating objects massive graviton geons. The basic equations can be reduced to the Schr\"odinger-Pois... |
gr-qc/9907051 | Victor Mikhailovich Zhuravlev | S. V. Chervon, V. M. Zhuravlev | The cosmological model with an analytic exit from inflation | 27 pages LaTex, 7 figures PS | null | null | ULSU/LFR-9901 | gr-qc | null | A cosmological model of homogeneous and isotropic spatially flat Universe
with gravitating self-interacting scalar field is considered. The exact
solution, admitting an analytical exit from inflationary stage into a radiation
era and a matter dominated epoch, is obtained by virtue of ``fine turning of
the potential''... | [
{
"created": "Wed, 14 Jul 1999 11:27:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Chervon",
"S. V.",
""
],
[
"Zhuravlev",
"V. M.",
""
]
] | A cosmological model of homogeneous and isotropic spatially flat Universe with gravitating self-interacting scalar field is considered. The exact solution, admitting an analytical exit from inflationary stage into a radiation era and a matter dominated epoch, is obtained by virtue of ``fine turning of the potential'' m... |
1602.04461 | Pierre Fleury | Pierre Fleury, Fabien Nugier, Giuseppe Fanizza | Geodesic-light-cone coordinates and the Bianchi I spacetime | 27 pages, 5 figures, v2 matches published version | JCAP 06 (2016) 008 | 10.1088/1475-7516/2016/06/008 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The geodesic-light-cone (GLC) coordinates are a useful tool to analyse light
propagation and observations in cosmological models. In this article, we
propose a detailed, pedagogical, and rigorous introduction to this coordinate
system, explore its gauge degrees of freedom, and emphasize its interest when
geometric op... | [
{
"created": "Sun, 14 Feb 2016 14:23:44 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Jun 2016 13:04:27 GMT",
"version": "v2"
}
] | 2016-06-09 | [
[
"Fleury",
"Pierre",
""
],
[
"Nugier",
"Fabien",
""
],
[
"Fanizza",
"Giuseppe",
""
]
] | The geodesic-light-cone (GLC) coordinates are a useful tool to analyse light propagation and observations in cosmological models. In this article, we propose a detailed, pedagogical, and rigorous introduction to this coordinate system, explore its gauge degrees of freedom, and emphasize its interest when geometric opti... |
1112.3351 | Paolo Pani | Nicolas Yunes, Paolo Pani, Vitor Cardoso | Gravitational Waves from Quasicircular Extreme Mass-Ratio Inspirals as
Probes of Scalar-Tensor Theories | 28 pages, 9 figures, 2 tables. Matches PRD version. Abstract abridged | Phys.Rev. D85 (2012) 102003 | 10.1103/PhysRevD.85.102003 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A stellar-mass compact object spiraling into a supermassive black hole, an
extreme-mass-ratio inspiral (EMRI), is one of the targets of future
gravitational-wave detectors and it offers a unique opportunity to test General
Relativity (GR) in the strong-field. We study whether generic scalar-tensor
(ST) theories can b... | [
{
"created": "Wed, 14 Dec 2011 21:00:17 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Aug 2012 10:02:46 GMT",
"version": "v2"
}
] | 2012-08-07 | [
[
"Yunes",
"Nicolas",
""
],
[
"Pani",
"Paolo",
""
],
[
"Cardoso",
"Vitor",
""
]
] | A stellar-mass compact object spiraling into a supermassive black hole, an extreme-mass-ratio inspiral (EMRI), is one of the targets of future gravitational-wave detectors and it offers a unique opportunity to test General Relativity (GR) in the strong-field. We study whether generic scalar-tensor (ST) theories can be ... |
1803.11358 | Ali \"Ovg\"un Dr. | Giovanni Otalora, Ali \"Ovg\"un, Joel Saavedra, and Nelson Videla | Inflation from a nonlinear magnetic monopole field nonminimally coupled
to curvature | 15 pages, 4 figures. Accepted for publication in Journal of Cosmology
and Astroparticle Physics (JCAP) | JCAP06(2018)003 | 10.1088/1475-7516/2018/06/003 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of nonminimally coupled $f(R)$ gravity theories, we study
early inflation driven by a nonlinear monopole magnetic field which is
nonminimally coupled to curvature. In order to isolate the effects of the
nonminimal coupling between matter and curvature we assume the pure
gravitational sector to have the... | [
{
"created": "Fri, 30 Mar 2018 06:33:40 GMT",
"version": "v1"
},
{
"created": "Mon, 28 May 2018 02:11:05 GMT",
"version": "v2"
}
] | 2018-06-05 | [
[
"Otalora",
"Giovanni",
""
],
[
"Övgün",
"Ali",
""
],
[
"Saavedra",
"Joel",
""
],
[
"Videla",
"Nelson",
""
]
] | In the context of nonminimally coupled $f(R)$ gravity theories, we study early inflation driven by a nonlinear monopole magnetic field which is nonminimally coupled to curvature. In order to isolate the effects of the nonminimal coupling between matter and curvature we assume the pure gravitational sector to have the E... |
1508.02281 | Farook Rahaman | Farook Rahaman, Sunil D. Maharaj, Iftikar Hossain Sardar, Koushik
Chakraborty | Conformally symmetric relativistic star | Accepted for publication in Mod.Phys.Lett.A | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate whether compact stars having Tolman-like interior geometry
admit conformal symmetry. Taking anisotropic pressure along the two principal
directions within the compact object, we obtain physically relevant quantities
such as transverse and radial pressure, density and redshift function. We study
the equ... | [
{
"created": "Mon, 3 Aug 2015 09:12:14 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Jul 2016 04:35:49 GMT",
"version": "v2"
}
] | 2016-07-25 | [
[
"Rahaman",
"Farook",
""
],
[
"Maharaj",
"Sunil D.",
""
],
[
"Sardar",
"Iftikar Hossain",
""
],
[
"Chakraborty",
"Koushik",
""
]
] | We investigate whether compact stars having Tolman-like interior geometry admit conformal symmetry. Taking anisotropic pressure along the two principal directions within the compact object, we obtain physically relevant quantities such as transverse and radial pressure, density and redshift function. We study the equat... |
2102.00373 | Ying Wang | Ying Wang, Wei Sun, Fuyao Liu, and Xin Wu | Construction of Explicit Symplectic Integrators in General Relativity.
I. Schwarzschild Black Holes | 10 pages,2 figures | The Astrophysical Journal, 907:66 (10pp), 2021 February | 10.3847/1538-4357/abcb8d | null | gr-qc astro-ph.IM nlin.CD physics.comp-ph | http://creativecommons.org/licenses/by/4.0/ | Symplectic integrators that preserve the geometric structure of Hamiltonian
flows and do not exhibit secular growth in energy errors are suitable for the
long-term integration of N-body Hamiltonian systems in the solar system.
However, the construction of explicit symplectic integrators is frequently
difficult in gen... | [
{
"created": "Sun, 31 Jan 2021 04:04:57 GMT",
"version": "v1"
}
] | 2021-02-02 | [
[
"Wang",
"Ying",
""
],
[
"Sun",
"Wei",
""
],
[
"Liu",
"Fuyao",
""
],
[
"Wu",
"Xin",
""
]
] | Symplectic integrators that preserve the geometric structure of Hamiltonian flows and do not exhibit secular growth in energy errors are suitable for the long-term integration of N-body Hamiltonian systems in the solar system. However, the construction of explicit symplectic integrators is frequently difficult in gener... |
2101.10915 | David Keitel | David Keitel, Rodrigo Tenorio, Gregory Ashton, Reinhard Prix | PyFstat: a Python package for continuous gravitational-wave data
analysis | 4 pages, updated to match published version. Software repository:
https://github.com/PyFstat/PyFstat/ | Journal of Open Source Software, 6(60), 3000 (2021) | 10.21105/joss.03000 | LIGO-P2100008 | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Gravitational waves in the sensitivity band of ground-based detectors can be
emitted by a number of astrophysical sources, including not only binary
coalescences, but also individual spinning neutron stars. The most promising
signals from such sources, although not yet detected, are long-lasting,
quasi-monochromatic ... | [
{
"created": "Tue, 26 Jan 2021 16:35:35 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Apr 2021 21:08:01 GMT",
"version": "v2"
}
] | 2021-04-08 | [
[
"Keitel",
"David",
""
],
[
"Tenorio",
"Rodrigo",
""
],
[
"Ashton",
"Gregory",
""
],
[
"Prix",
"Reinhard",
""
]
] | Gravitational waves in the sensitivity band of ground-based detectors can be emitted by a number of astrophysical sources, including not only binary coalescences, but also individual spinning neutron stars. The most promising signals from such sources, although not yet detected, are long-lasting, quasi-monochromatic Co... |
1205.3184 | Vitor Cardoso | Vitor Cardoso, Paolo Pani | Tidal acceleration of black holes and superradiance | 12 pages, 4 figures. v2: minor changes. Final version to appear in
CQG | null | 10.1088/0264-9381/30/4/045011 | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Tidal effects have long ago locked the Moon in synchronous rotation with the
Earth and progressively increase the Earth-Moon distance. This "tidal
acceleration" hinges on dissipation. Binaries containing black holes may also
be tidally accelerated, dissipation being caused by the event horizon - a
flexible, viscous o... | [
{
"created": "Mon, 14 May 2012 20:12:08 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jan 2013 22:26:03 GMT",
"version": "v2"
}
] | 2015-06-05 | [
[
"Cardoso",
"Vitor",
""
],
[
"Pani",
"Paolo",
""
]
] | Tidal effects have long ago locked the Moon in synchronous rotation with the Earth and progressively increase the Earth-Moon distance. This "tidal acceleration" hinges on dissipation. Binaries containing black holes may also be tidally accelerated, dissipation being caused by the event horizon - a flexible, viscous one... |
gr-qc/0011009 | Rod Aros | Rodrigo Aros | Analysing Charges in even dimensions | null | Class. Quantum Grav. 18 (2001) 5359 | 10.1088/0264-9381/18/24/303 | null | gr-qc | null | Lanczos-Lovelock theories of gravity, in its first order version, are studied
on asymptotically locally anti de Sitter spaces. It is shown that
thermodynamics satisfies the standard behavior and an expression for entropy is
found for this formalism. Finally a short analysis of the algebra of conserved
charges is disp... | [
{
"created": "Fri, 3 Nov 2000 13:57:06 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Feb 2001 14:25:50 GMT",
"version": "v2"
},
{
"created": "Wed, 15 Mar 2006 18:12:31 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Aros",
"Rodrigo",
""
]
] | Lanczos-Lovelock theories of gravity, in its first order version, are studied on asymptotically locally anti de Sitter spaces. It is shown that thermodynamics satisfies the standard behavior and an expression for entropy is found for this formalism. Finally a short analysis of the algebra of conserved charges is displa... |
1003.0878 | Giulia Gubitosi | Giulia Gubitosi, Giuseppe Genovese, Giovanni Amelino-Camelia,
Alessandro Melchiorri | Planck-scale modifications to Electrodynamics characterized by a
space-like symmetry-breaking vector | null | Phys.Rev.D82:024013,2010 | 10.1103/PhysRevD.82.024013 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the study of Planck-scale ("quantum-gravity induced") violations of
Lorentz symmetry, an important role was played by the deformed-electrodynamics
model introduced by Myers and Pospelov. Its reliance on conventional effective
quantum field theory, and its description of symmetry-violation effects simply
in terms o... | [
{
"created": "Wed, 3 Mar 2010 20:10:04 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Gubitosi",
"Giulia",
""
],
[
"Genovese",
"Giuseppe",
""
],
[
"Amelino-Camelia",
"Giovanni",
""
],
[
"Melchiorri",
"Alessandro",
""
]
] | In the study of Planck-scale ("quantum-gravity induced") violations of Lorentz symmetry, an important role was played by the deformed-electrodynamics model introduced by Myers and Pospelov. Its reliance on conventional effective quantum field theory, and its description of symmetry-violation effects simply in terms of ... |
2204.10742 | Maximiliano Isi | Maximiliano Isi, Will M. Farr, Katerina Chatziioannou | Comparing Bayes factors and hierarchical inference for testing general
relativity with gravitational waves | null | null | 10.1103/PhysRevD.106.024048 | LIGO-P2200099 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | In the context of testing general relativity with gravitational waves,
constraints obtained with multiple events are typically combined either through
a hierarchical formalism or though a combined multiplicative Bayes factor. We
show that the well-known dependence of Bayes factors on the analysis priors in
regions of... | [
{
"created": "Fri, 22 Apr 2022 15:04:18 GMT",
"version": "v1"
}
] | 2022-08-17 | [
[
"Isi",
"Maximiliano",
""
],
[
"Farr",
"Will M.",
""
],
[
"Chatziioannou",
"Katerina",
""
]
] | In the context of testing general relativity with gravitational waves, constraints obtained with multiple events are typically combined either through a hierarchical formalism or though a combined multiplicative Bayes factor. We show that the well-known dependence of Bayes factors on the analysis priors in regions of t... |
2212.00472 | Rahul Thakur | Sukanta Panda, Arun Rana and Rahul Thakur | Constant-Roll Inflation in modified $f(R,\phi)$ gravity model using
Palatini Formalism | 13 Pages and 10 Figures | null | 10.1140/epjc/s10052-023-11459-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we study a constant-roll inflationary model in the Palatini
formalism using modified gravity. Here our action consists a non-minimal
coupling of a scalar field $\phi$ with Ricci scalar $R$ in a general form of
$f(R,\phi)$. Using Palatini approach, we write its equivalent scalar-tensor
form in the Einste... | [
{
"created": "Thu, 1 Dec 2022 12:55:25 GMT",
"version": "v1"
}
] | 2023-04-19 | [
[
"Panda",
"Sukanta",
""
],
[
"Rana",
"Arun",
""
],
[
"Thakur",
"Rahul",
""
]
] | In this work, we study a constant-roll inflationary model in the Palatini formalism using modified gravity. Here our action consists a non-minimal coupling of a scalar field $\phi$ with Ricci scalar $R$ in a general form of $f(R,\phi)$. Using Palatini approach, we write its equivalent scalar-tensor form in the Einstein... |
1110.4833 | Jonathan Ziprick | Laurent Freidel, Marc Geiller, Jonathan Ziprick | Continuous formulation of the Loop Quantum Gravity phase space | published version | Class. Quantum Grav. 30 (2013) 085013 (28pp) | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the discrete classical phase space of loop gravity,
which is expressed in terms of the holonomy-flux variables, and show how it is
related to the continuous phase space of general relativity. In particular, we
prove an isomorphism between the loop gravity discrete phase space and the
symplecti... | [
{
"created": "Fri, 21 Oct 2011 16:24:15 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Jan 2013 02:56:53 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Apr 2013 15:41:00 GMT",
"version": "v3"
}
] | 2013-04-04 | [
[
"Freidel",
"Laurent",
""
],
[
"Geiller",
"Marc",
""
],
[
"Ziprick",
"Jonathan",
""
]
] | In this paper, we study the discrete classical phase space of loop gravity, which is expressed in terms of the holonomy-flux variables, and show how it is related to the continuous phase space of general relativity. In particular, we prove an isomorphism between the loop gravity discrete phase space and the symplectic ... |
1906.05386 | Carlos A. R. Herdeiro | C. Herdeiro, I. Perapechka, E. Radu, Ya. Shnir | Asymptotically flat spinning scalar, Dirac and Proca stars | 12 pages, 3 figures | null | 10.1016/j.physletb.2019.134845 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein's gravity minimally coupled to free, massive, classical fundamental
fields admits particle-like solutions. These are asymptotically flat,
everywhere non-singular configurations that realise Wheeler's concept of a
geon: a localised lump of self-gravitating energy whose existence is anchored
on the non-lineari... | [
{
"created": "Wed, 12 Jun 2019 21:31:47 GMT",
"version": "v1"
}
] | 2019-08-14 | [
[
"Herdeiro",
"C.",
""
],
[
"Perapechka",
"I.",
""
],
[
"Radu",
"E.",
""
],
[
"Shnir",
"Ya.",
""
]
] | Einstein's gravity minimally coupled to free, massive, classical fundamental fields admits particle-like solutions. These are asymptotically flat, everywhere non-singular configurations that realise Wheeler's concept of a geon: a localised lump of self-gravitating energy whose existence is anchored on the non-lineariti... |
2312.16123 | Alesandro Santos | F. Ahmed, J. C. R. de Souza and A. F. Santos | Cosmological constant Petrov type-N space-time in Ricci-inverse gravity | 15 pages, accepted for publication in AOP | null | 10.1016/j.aop.2023.169578 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Our focus is on a specific type-N space-time that exhibits closed time-like
curves in general relativity theory within the framework of Ricci-inverse
gravity model. The matter-energy content is solely composed of a pure radiation
field, and it adheres to the energy conditions while featuring a negative
cosmological c... | [
{
"created": "Tue, 26 Dec 2023 17:14:57 GMT",
"version": "v1"
}
] | 2023-12-27 | [
[
"Ahmed",
"F.",
""
],
[
"de Souza",
"J. C. R.",
""
],
[
"Santos",
"A. F.",
""
]
] | Our focus is on a specific type-N space-time that exhibits closed time-like curves in general relativity theory within the framework of Ricci-inverse gravity model. The matter-energy content is solely composed of a pure radiation field, and it adheres to the energy conditions while featuring a negative cosmological con... |
1701.08176 | Josep Llosa | Josep Llosa | An extension of Poincar\'e group based on generalized Fermi-Walker
coordinates | arXiv admin note: text overlap with arXiv:1512.07465 | Class. Quantum Grav. 34 (2017) 205003(21pp) | 10.1088/1361-6382/aa8972 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The class of accelerated and rotating reference frames has been studied on
the basis of generalized Fermi-Walker coordinates. We obtain the infinitesimal
transformations connecting any two of these frames and also their commutation
relations. We thus have an infinite dimensional extension of the Poincar\'e
algebra an... | [
{
"created": "Fri, 27 Jan 2017 19:18:14 GMT",
"version": "v1"
}
] | 2017-11-21 | [
[
"Llosa",
"Josep",
""
]
] | The class of accelerated and rotating reference frames has been studied on the basis of generalized Fermi-Walker coordinates. We obtain the infinitesimal transformations connecting any two of these frames and also their commutation relations. We thus have an infinite dimensional extension of the Poincar\'e algebra and,... |
2004.14985 | Thomas Sotiriou | Georgios Antoniou, Lorenzo Bordin, Thomas P. Sotiriou | Compact object scalarization with general relativity as a cosmic
attractor | 5 pages, 3 figures; v2: corrected typo in legend of Fig. 1 | Phys. Rev. D 103, 024012 (2021) | 10.1103/PhysRevD.103.024012 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate that there are theories that exhibit spontaneous scalarization
in the strong gravity regime while having General Relativity with a constant
scalar as a cosmological attractor. We identify the minimal model that has this
property and discuss its extensions.
| [
{
"created": "Thu, 30 Apr 2020 17:31:41 GMT",
"version": "v1"
},
{
"created": "Sun, 3 May 2020 16:50:56 GMT",
"version": "v2"
}
] | 2022-03-14 | [
[
"Antoniou",
"Georgios",
""
],
[
"Bordin",
"Lorenzo",
""
],
[
"Sotiriou",
"Thomas P.",
""
]
] | We demonstrate that there are theories that exhibit spontaneous scalarization in the strong gravity regime while having General Relativity with a constant scalar as a cosmological attractor. We identify the minimal model that has this property and discuss its extensions. |
1304.5906 | Stoytcho Yazadjiev | Stoytcho S. Yazadjiev | Thermodynamics of rotating charged dilaton black holes in an external
magnetic field | 11 pages. arXiv admin note: text overlap with arXiv:1302.5530;v2
typos corrected | null | 10.1016/j.physletb.2013.05.028 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper we study the long-standing problem for the
thermodynamics of magnetized dilaton black holes. For this purpose we construct
an exact solution describing a rotating charged dilaton black hole immersed in
an external magnetic field and discuss its basic properties. We derive a
Smarr-like relation an... | [
{
"created": "Mon, 22 Apr 2013 10:23:27 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Sep 2013 09:45:10 GMT",
"version": "v2"
}
] | 2015-06-15 | [
[
"Yazadjiev",
"Stoytcho S.",
""
]
] | In the present paper we study the long-standing problem for the thermodynamics of magnetized dilaton black holes. For this purpose we construct an exact solution describing a rotating charged dilaton black hole immersed in an external magnetic field and discuss its basic properties. We derive a Smarr-like relation and ... |
2302.06157 | Pantelis Apostolopoulos | Pantelis S. Apostolopoulos | A class of 5D inhomogeneous models with a cosmological constant | 5 pages, accepted version prepared for the "2nd Electronic Conference
on Universe" (16 Feb-2 Mar 2023) | Phys. Sci. Forum 2023, 7, 33 | 10.3390/ECU2023-14064 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this work we would like to address the problem of the effect of bulk
matter on the brane cosmological evolution in a general way. We assume that the
spatial part of the brane metric is not maximally symmetric, therefore
spatially inhomogeneous. However we retain the conformal flatness property of
the standard cosm... | [
{
"created": "Mon, 13 Feb 2023 07:36:44 GMT",
"version": "v1"
}
] | 2023-03-17 | [
[
"Apostolopoulos",
"Pantelis S.",
""
]
] | In this work we would like to address the problem of the effect of bulk matter on the brane cosmological evolution in a general way. We assume that the spatial part of the brane metric is not maximally symmetric, therefore spatially inhomogeneous. However we retain the conformal flatness property of the standard cosmol... |
1606.04944 | Shahar Hod | Shahar Hod | The entropy emission properties of near-extremal Reissner-Nordstr\"om
black holes | 5 pages | Physical Review D 93, 104027 (2016) | 10.1103/PhysRevD.93.104027 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bekenstein and Mayo have revealed an interesting property of evaporating
$(3+1)$-dimensional Schwarzschild black holes: their entropy emission rates
$\dot S_{\text{Sch}}$ are related to their energy emission rates $P$ by the
simple relation $\dot S_{\text{Sch}}=C_{\text{Sch}}\times (P/\hbar)^{1/2}$.
Remembering that ... | [
{
"created": "Wed, 15 Jun 2016 20:00:03 GMT",
"version": "v1"
}
] | 2016-06-22 | [
[
"Hod",
"Shahar",
""
]
] | Bekenstein and Mayo have revealed an interesting property of evaporating $(3+1)$-dimensional Schwarzschild black holes: their entropy emission rates $\dot S_{\text{Sch}}$ are related to their energy emission rates $P$ by the simple relation $\dot S_{\text{Sch}}=C_{\text{Sch}}\times (P/\hbar)^{1/2}$. Remembering that $(... |
1510.04155 | Saken Toktarbay | Saken Toktarbay and Hernando Quevedo | A stationary q-metric | 3 pages | null | 10.1134/S0202289314040136 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a stationary generalization of the static $q-$metric, the simplest
generalization of the Schwarzschild solution that contains a quadrupole
parameter. It possesses three independent parameters that are related to the
mass, quadrupole moment and angular momentum. We investigate the geometric and
physical pro... | [
{
"created": "Wed, 14 Oct 2015 15:35:50 GMT",
"version": "v1"
}
] | 2015-10-15 | [
[
"Toktarbay",
"Saken",
""
],
[
"Quevedo",
"Hernando",
""
]
] | We present a stationary generalization of the static $q-$metric, the simplest generalization of the Schwarzschild solution that contains a quadrupole parameter. It possesses three independent parameters that are related to the mass, quadrupole moment and angular momentum. We investigate the geometric and physical prope... |
gr-qc/0105058 | Roy Maartens | Laszlo Gergely (Szeged), Roy Maartens (Portsmouth) | Brane-world generalizations of the Einstein static universe | additional interpretation of new solutions; accepted by
Class.Quant.Grav | Class.Quant.Grav. 19 (2002) 213-222 | 10.1088/0264-9381/19/2/303 | null | gr-qc astro-ph hep-th | null | A static Friedmann brane in a 5-dimensional bulk (Randall-Sundrum type
scenario) can have a very different relation between the density, pressure,
curvature and cosmological constant than in the case of the general
relativistic Einstein static universe. In particular, static Friedmann branes
with zero cosmological co... | [
{
"created": "Thu, 17 May 2001 15:54:33 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Dec 2001 08:14:39 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Gergely",
"Laszlo",
"",
"Szeged"
],
[
"Maartens",
"Roy",
"",
"Portsmouth"
]
] | A static Friedmann brane in a 5-dimensional bulk (Randall-Sundrum type scenario) can have a very different relation between the density, pressure, curvature and cosmological constant than in the case of the general relativistic Einstein static universe. In particular, static Friedmann branes with zero cosmological cons... |
2303.17283 | Tuan Do | Tuan Q. Do, Duy H. Nguyen, Tuyen M. Pham | Stability investigations of isotropic and anisotropic exponential
inflation in the Starobinsky-Bel-Robinson gravity | 32 pages, 3 figures. V3 with many discussions, calculations, and
relevant references added. Accepted for publication by International Journal
of Modern Physics D. Comments are welcome | International Journal of Modern Physics D 32, 2350087 (2023) | 10.1142/S0218271823500876 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we would like to examine whether a novel
Starobinsky-Bel-Robinson gravity model admits stable exponential inflationary
solutions with or without spatial anisotropies. As a result, we are able to
derive an exact de Sitter inflationary to this Starobinsky-Bel-Robinson model.
Furthermore, we observe that ... | [
{
"created": "Thu, 30 Mar 2023 10:45:03 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Apr 2023 13:32:03 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Nov 2023 03:48:31 GMT",
"version": "v3"
}
] | 2023-12-01 | [
[
"Do",
"Tuan Q.",
""
],
[
"Nguyen",
"Duy H.",
""
],
[
"Pham",
"Tuyen M.",
""
]
] | In this paper, we would like to examine whether a novel Starobinsky-Bel-Robinson gravity model admits stable exponential inflationary solutions with or without spatial anisotropies. As a result, we are able to derive an exact de Sitter inflationary to this Starobinsky-Bel-Robinson model. Furthermore, we observe that an... |
1808.08154 | Massimiliano Rinaldi | Massimiliano Rinaldi | On the equivalence of Jordan and Einstein frames in scale-invariant
gravity | 6 pages, revtex. Accepted for publication in EPJPlus | Eur. Phys. J. Plus (2018) 133: 408 | 10.1140/epjp/i2018-12213-9 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this note we consider the issue of the classical equivalence of
scale-invariant gravity in the Einstein and in the Jordan frames. We first
consider the simplest example $f(R)=R^{2}$ and show explicitly that the
equivalence breaks down when dealing with Ricci-flat solutions. We discuss the
link with the fact that f... | [
{
"created": "Fri, 24 Aug 2018 14:23:08 GMT",
"version": "v1"
}
] | 2018-10-09 | [
[
"Rinaldi",
"Massimiliano",
""
]
] | In this note we consider the issue of the classical equivalence of scale-invariant gravity in the Einstein and in the Jordan frames. We first consider the simplest example $f(R)=R^{2}$ and show explicitly that the equivalence breaks down when dealing with Ricci-flat solutions. We discuss the link with the fact that fla... |
0805.1451 | James Isenberg | Vincent Moncrief, James Isenberg | Symmetries of Higher Dimensional Black Holes | 57 pages | Class.Quant.Grav.25:195015,2008 | 10.1088/0264-9381/25/19/195015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that if a stationary, real analytic, asymptotically flat vacuum
black hole spacetime of dimension $n\geq 4$ contains a non-degenerate horizon
with compact cross sections that are transverse to the stationarity generating
Killing vector field then, for each connected component of the black hole's
horizon, the... | [
{
"created": "Sat, 10 May 2008 06:41:15 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Moncrief",
"Vincent",
""
],
[
"Isenberg",
"James",
""
]
] | We prove that if a stationary, real analytic, asymptotically flat vacuum black hole spacetime of dimension $n\geq 4$ contains a non-degenerate horizon with compact cross sections that are transverse to the stationarity generating Killing vector field then, for each connected component of the black hole's horizon, there... |
gr-qc/9608033 | Jorge Pullin | Hugo Fort, Rodolfo Gambini and Jorge Pullin | Lattice knot theory and quantum gravity in the loop representation | 23 pages, RevTeX, 14 figures included with psfig | Phys.Rev. D56 (1997) 2127-2143 | 10.1103/PhysRevD.56.2127 | CGPG-96/8-1, ESI-368 | gr-qc hep-lat hep-th math.QA q-alg | null | We present an implementation of the loop representation of quantum gravity on
a square lattice. Instead of starting from a classical lattice theory,
quantizing and introducing loops, we proceed backwards, setting up constraints
in the lattice loop representation and showing that they have appropriate
(singular) conti... | [
{
"created": "Wed, 14 Aug 1996 19:18:34 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Fort",
"Hugo",
""
],
[
"Gambini",
"Rodolfo",
""
],
[
"Pullin",
"Jorge",
""
]
] | We present an implementation of the loop representation of quantum gravity on a square lattice. Instead of starting from a classical lattice theory, quantizing and introducing loops, we proceed backwards, setting up constraints in the lattice loop representation and showing that they have appropriate (singular) continu... |
0804.1686 | Ralf Schutzhold | Ralf Sch\"utzhold and William G. Unruh | On the origin of the particles in black hole evaporation | 4 pages RevTex | Phys.Rev.D78:041504,2008 | 10.1103/PhysRevD.78.041504 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an analytic derivation of Hawking radiation for an arbitrary
(spatial) dispersion relation $\omega(k)$ as a model for ultra-high energy
deviations from general covariance. It turns out that the Hawking temperature
is proportional to the product of the group $d\omega/dk$ and phase $\omega/k$
velocities eval... | [
{
"created": "Thu, 10 Apr 2008 12:30:24 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Schützhold",
"Ralf",
""
],
[
"Unruh",
"William G.",
""
]
] | We present an analytic derivation of Hawking radiation for an arbitrary (spatial) dispersion relation $\omega(k)$ as a model for ultra-high energy deviations from general covariance. It turns out that the Hawking temperature is proportional to the product of the group $d\omega/dk$ and phase $\omega/k$ velocities evalua... |
1810.03080 | Hamid Reza Sepangi | A. Rahmani, M. Honardoost, H. R. Sepangi | Superradiant instability and asymptotically AdS hairy black holes in
$F(R)$-charged scalar field theory | 23 pages, 12 figures, to appear in GERG | Gen Relativ Gravit 52, 53 (2020) | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the phenomena of superradiance for $F(R)$-Maxwell black holes in an
AdS space-time. The AdS boundary plays the role of a mirror and provides a
natural confining system that makes the superradiant waves bouncing back and
forth between the region near the horizon and the reflective boundary, causing
a possible... | [
{
"created": "Sun, 7 Oct 2018 03:39:51 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Feb 2019 08:40:58 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Mar 2019 11:06:51 GMT",
"version": "v3"
},
{
"created": "Sun, 7 Jul 2019 02:45:10 GMT",
"version": "v4"
},
{
"crea... | 2020-06-02 | [
[
"Rahmani",
"A.",
""
],
[
"Honardoost",
"M.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | We study the phenomena of superradiance for $F(R)$-Maxwell black holes in an AdS space-time. The AdS boundary plays the role of a mirror and provides a natural confining system that makes the superradiant waves bouncing back and forth between the region near the horizon and the reflective boundary, causing a possible s... |
gr-qc/0404120 | Joel Franklin | S. Deser, J. Franklin, B. Tekin | Shortcuts to Spherically Symmetric Solutions: A Cautionary Note | 2 pages. Amplified derivation, accepted for publication in Class
Quant Grav | Class.Quant.Grav.21:5295-5296,2004 | 10.1088/0264-9381/21/22/N01 | null | gr-qc | null | Spherically symmetric solutions of generic gravitational models are
optimally, and legitimately, obtained by expressing the action in terms of the
two surviving metric components. This shortcut is not to be overdone, however:
a one-function ansatz invalidates it, as illustrated by the incorrect solutions
of [1].
| [
{
"created": "Wed, 28 Apr 2004 21:05:56 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Sep 2004 17:40:02 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Deser",
"S.",
""
],
[
"Franklin",
"J.",
""
],
[
"Tekin",
"B.",
""
]
] | Spherically symmetric solutions of generic gravitational models are optimally, and legitimately, obtained by expressing the action in terms of the two surviving metric components. This shortcut is not to be overdone, however: a one-function ansatz invalidates it, as illustrated by the incorrect solutions of [1]. |
2006.09156 | John Klauder | John R. Klauder | Using Affine Quantization to Analyze Non-renormalizable Scalar Fields
and the Quantization of Einstein's Gravity | 19 pages; Carefully choosing favored variables to promote to
operators, featuring non-renormalizable scalar fields and quantum gravity | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Affine quantization is a parallel procedure to canonical quantization, which
is ideally suited to deal with non-renormalizable scalar models as well as
quantum gravity. The basic applications of this approach lead to the common
goals of any quantization, such as Schroedinger's representation and
Schroedinger's equati... | [
{
"created": "Tue, 16 Jun 2020 13:59:37 GMT",
"version": "v1"
}
] | 2020-06-17 | [
[
"Klauder",
"John R.",
""
]
] | Affine quantization is a parallel procedure to canonical quantization, which is ideally suited to deal with non-renormalizable scalar models as well as quantum gravity. The basic applications of this approach lead to the common goals of any quantization, such as Schroedinger's representation and Schroedinger's equation... |
1607.02698 | Ryosuke Mizuno | Ryosuke Mizuno, Seiju Ohashi, Tetsuya Shiromizu | Violation of cosmic censorship in the gravitational collapse of a dust
cloud in five dimension | 37 pages | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We analyze the null geodesic equations in five dimensional spherically
symmetric spacetime with collapsing inhomogeneous dust cloud. By using a new
method, we prove the existence and non-existence of solutions to null geodesic
equation emanating from central singularity for smooth initial distribution of
dust. Moreov... | [
{
"created": "Sun, 10 Jul 2016 06:29:33 GMT",
"version": "v1"
}
] | 2016-07-12 | [
[
"Mizuno",
"Ryosuke",
""
],
[
"Ohashi",
"Seiju",
""
],
[
"Shiromizu",
"Tetsuya",
""
]
] | We analyze the null geodesic equations in five dimensional spherically symmetric spacetime with collapsing inhomogeneous dust cloud. By using a new method, we prove the existence and non-existence of solutions to null geodesic equation emanating from central singularity for smooth initial distribution of dust. Moreover... |
2311.04025 | Liu Zhao | Tao Wang, Yifan Cai, Long Cui and Liu Zhao | General relativistic stochastic thermodynamics | 15 pages, 1 figure | null | null | null | gr-qc cond-mat.stat-mech | http://creativecommons.org/licenses/by/4.0/ | Based on the recent work [1,2], we formulate the first law and the second law
of stochastic thermodynamics in the framework of general relativity. These laws
are established for a charged Brownian particle moving in a heat reservoir and
subjecting to an external electromagnetic field in generic stationary spacetime
b... | [
{
"created": "Tue, 7 Nov 2023 14:24:34 GMT",
"version": "v1"
}
] | 2023-11-08 | [
[
"Wang",
"Tao",
""
],
[
"Cai",
"Yifan",
""
],
[
"Cui",
"Long",
""
],
[
"Zhao",
"Liu",
""
]
] | Based on the recent work [1,2], we formulate the first law and the second law of stochastic thermodynamics in the framework of general relativity. These laws are established for a charged Brownian particle moving in a heat reservoir and subjecting to an external electromagnetic field in generic stationary spacetime bac... |
0912.2724 | Nicolas Yunes | Nicolas Yunes, Frans Pretorius and David Spergel | Constraining the evolutionary history of Newton's constant with
gravitational wave observations | 11 pages, 2 figures, replaced with version accepted for publication
in Phys. Rev. D. | Phys.Rev.D81:064018,2010 | 10.1103/PhysRevD.81.064018 | null | gr-qc astro-ph.CO astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Space-borne gravitational wave detectors, such as the proposed Laser
Interferometer Space Antenna, are expected to observe black hole coalescences
to high redshift and with large signal-to-noise ratios, rendering their
gravitational waves ideal probes of fundamental physics. The promotion of
Newton's constant to a ti... | [
{
"created": "Tue, 15 Dec 2009 16:44:02 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Apr 2010 18:43:40 GMT",
"version": "v2"
}
] | 2010-04-29 | [
[
"Yunes",
"Nicolas",
""
],
[
"Pretorius",
"Frans",
""
],
[
"Spergel",
"David",
""
]
] | Space-borne gravitational wave detectors, such as the proposed Laser Interferometer Space Antenna, are expected to observe black hole coalescences to high redshift and with large signal-to-noise ratios, rendering their gravitational waves ideal probes of fundamental physics. The promotion of Newton's constant to a time... |
gr-qc/9412062 | Ed Seidel | Edward Seidel, Wai-Mo Suen | Formation gf Bosonic Compact Objects | 3 pages, uuencoded gziped ps file. Also available at
http://jean-luc.ncsa.uiuc.edu/Papers/ To appear in the MG7 proceedings | null | null | null | gr-qc | null | We showed that compact bosonic objects can be formed through a process we
called gravitational cooling. A central issue in the subject of boson star is
whether a classical field configuration, {\it e.g.,} one described by the
Klein-Gordon equation, can collapse to form a compact star-like object, as
there is apparent... | [
{
"created": "Wed, 21 Dec 1994 01:42:06 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Seidel",
"Edward",
""
],
[
"Suen",
"Wai-Mo",
""
]
] | We showed that compact bosonic objects can be formed through a process we called gravitational cooling. A central issue in the subject of boson star is whether a classical field configuration, {\it e.g.,} one described by the Klein-Gordon equation, can collapse to form a compact star-like object, as there is apparently... |
gr-qc/0506125 | Satheesh Kumar V H | V H Satheesh Kumar and P K Suresh | Are We Living in a Higher Dimensional Universe? | 21 pages, 5 figures. New reference is added with minor modification | null | null | null | gr-qc hep-ph hep-th | null | It is a brief review of the physical theories embodying the idea of extra
dimensions, starting from the pre-historic times to the present day. Here we
have classified the developments into three eras, such as Pre-Einstein,
Einstein and Kaluza-Klein. Here the views and flow of thoughts are emphasized
rather rigorous m... | [
{
"created": "Tue, 28 Jun 2005 08:02:50 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Jul 2005 05:53:40 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Kumar",
"V H Satheesh",
""
],
[
"Suresh",
"P K",
""
]
] | It is a brief review of the physical theories embodying the idea of extra dimensions, starting from the pre-historic times to the present day. Here we have classified the developments into three eras, such as Pre-Einstein, Einstein and Kaluza-Klein. Here the views and flow of thoughts are emphasized rather rigorous mat... |
1705.09836 | Patryk Drobi\'nski | Patryk Drobi\'nski, Jerzy Lewandowski | The continuum approach to the BF vacuum: the U(1) case | 13 pages | Phys. Rev. D 96, 126011 (2017) | 10.1103/PhysRevD.96.126011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A quantum representation of holonomies and exponentiated fluxes of a $U(1)$
gauge theory that contains the Pullin-Dittrich-Geiller (DG) vacuum is presented
and discussed. Our quantization is performed manifestly in a continuum theory,
without any discretization. The discretness emerges on the quantum level as a
prope... | [
{
"created": "Sat, 27 May 2017 16:16:25 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Nov 2017 09:34:49 GMT",
"version": "v2"
}
] | 2017-12-27 | [
[
"Drobiński",
"Patryk",
""
],
[
"Lewandowski",
"Jerzy",
""
]
] | A quantum representation of holonomies and exponentiated fluxes of a $U(1)$ gauge theory that contains the Pullin-Dittrich-Geiller (DG) vacuum is presented and discussed. Our quantization is performed manifestly in a continuum theory, without any discretization. The discretness emerges on the quantum level as a propert... |
2310.08160 | Tao Yang | Tao Yang, Rong-Gen Cai, Zhoujian Cao, Hyung Mok Lee | Eccentricity enables the earliest warning and localization of
gravitational waves with ground-based detectors | 8 pages, 2 figures, published in PRD | Phys.Rev.D 109 (2024) 104041 | 10.1103/PhysRevD.109.104041 | null | gr-qc astro-ph.CO astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The early and precise localization of gravitational waves (GWs) is pivotal in
detecting their electromagnetic (EM) counterparts, especially for binary
neutron stars (BNS) and neutron star-black hole binaries (NSBH). In this
letter, we pioneer the exploration of utilizing the higher harmonic modes
induced by the eccen... | [
{
"created": "Thu, 12 Oct 2023 09:29:45 GMT",
"version": "v1"
},
{
"created": "Tue, 14 May 2024 01:25:17 GMT",
"version": "v2"
}
] | 2024-05-15 | [
[
"Yang",
"Tao",
""
],
[
"Cai",
"Rong-Gen",
""
],
[
"Cao",
"Zhoujian",
""
],
[
"Lee",
"Hyung Mok",
""
]
] | The early and precise localization of gravitational waves (GWs) is pivotal in detecting their electromagnetic (EM) counterparts, especially for binary neutron stars (BNS) and neutron star-black hole binaries (NSBH). In this letter, we pioneer the exploration of utilizing the higher harmonic modes induced by the eccentr... |
1306.4775 | Sergey Stepanov | S.S. Stepanov | Are rigid non-inertial frames of reference really rigid? | in Russian, 4 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper the notion of the rigid frame of reference within special
relativity is analysed. Three definitions of rigidity are formulated. By using
several examples of non-inertial frames, it is shown that these definitions are
not equivalent. It is also shown that so called M\"oller rigid non-inertial
frames are ... | [
{
"created": "Thu, 20 Jun 2013 07:39:33 GMT",
"version": "v1"
}
] | 2013-06-21 | [
[
"Stepanov",
"S. S.",
""
]
] | In this paper the notion of the rigid frame of reference within special relativity is analysed. Three definitions of rigidity are formulated. By using several examples of non-inertial frames, it is shown that these definitions are not equivalent. It is also shown that so called M\"oller rigid non-inertial frames are lo... |
2112.04206 | Chenghu Ge | Rong-Gen Cai, Chenghu Ge, Li Li, Run-Qiu Yang | Inside Anisotropic Black Hole with Vector Hair | v3:typos fixed, published version | JHEP 02(2022)139 | 10.1007/JHEP02(2022)139 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the internal structure of anisotropic black holes with charged
vector hairs. Taking advantage of the scaling symmetries of the system, some
radially conserved charges are found via the extension of the Noether theorem.
Then, a general proof of no inner horizon of these black holes is presented and
the geomet... | [
{
"created": "Wed, 8 Dec 2021 10:12:16 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Dec 2021 10:14:17 GMT",
"version": "v2"
},
{
"created": "Tue, 22 Feb 2022 01:46:33 GMT",
"version": "v3"
}
] | 2022-02-23 | [
[
"Cai",
"Rong-Gen",
""
],
[
"Ge",
"Chenghu",
""
],
[
"Li",
"Li",
""
],
[
"Yang",
"Run-Qiu",
""
]
] | We study the internal structure of anisotropic black holes with charged vector hairs. Taking advantage of the scaling symmetries of the system, some radially conserved charges are found via the extension of the Noether theorem. Then, a general proof of no inner horizon of these black holes is presented and the geometry... |
gr-qc/9808016 | Adrian Kent | Adrian Kent | Consistent Sets and Contrary Inferences: Reply to Griffiths and Hartle | 4 pages, TeX with harvmac; typo fixed. To appear in Phys. Rev. Lett | Phys.Rev.Lett. 81 (1998) 1982 | 10.1103/PhysRevLett.81.1982 | DAMTP-97/126 | gr-qc hep-th quant-ph | null | It was pointed out recently [A. Kent, Phys. Rev. Lett. 78 (1997) 2874] that
the consistent histories approach allows contrary inferences to be made from
the same data. These inferences correspond to projections $P$ and $Q$,
belonging to different consistent sets, with the properties that $PQ = QP = 0$
and $P \neq 1 -... | [
{
"created": "Wed, 5 Aug 1998 14:55:24 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Aug 1998 20:05:16 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Kent",
"Adrian",
""
]
] | It was pointed out recently [A. Kent, Phys. Rev. Lett. 78 (1997) 2874] that the consistent histories approach allows contrary inferences to be made from the same data. These inferences correspond to projections $P$ and $Q$, belonging to different consistent sets, with the properties that $PQ = QP = 0$ and $P \neq 1 -Q$... |
gr-qc/0403019 | Jose M. Martin-Garcia | Carsten Gundlach, Jose M. Martin-Garcia | Symmetric hyperbolicity and consistent boundary conditions for
second-order Einstein equations | 16 pages, 1 figure, revtex4 | Phys.Rev. D70 (2004) 044032 | 10.1103/PhysRevD.70.044032 | null | gr-qc | null | We present two families of first-order in time and second-order in space
formulations of the Einstein equations (variants of the Arnowitt-Deser-Misner
formulation) that admit a complete set of characteristic variables and a
conserved energy that can be expressed in terms of the characteristic
variables. The associate... | [
{
"created": "Wed, 3 Mar 2004 18:33:22 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Gundlach",
"Carsten",
""
],
[
"Martin-Garcia",
"Jose M.",
""
]
] | We present two families of first-order in time and second-order in space formulations of the Einstein equations (variants of the Arnowitt-Deser-Misner formulation) that admit a complete set of characteristic variables and a conserved energy that can be expressed in terms of the characteristic variables. The associated ... |
2304.08874 | Tuan Do | Tuan Q. Do, W. F. Kao | Anisotropic power-law inflation for a generalized model of two scalar
and two vector fields | 26 pages, 6 figures. Final version with some discussions and relevant
references added; typos fixed. All calculations remain unchanged. Accepted
for publication in Physica Scripta. Comments are welcome | Phys. Scr. 99, 015002 (2024) | 10.1088/1402-4896/ad0f82 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cosmological implication of a generalized model of two scalar and two vector
fields, in which both scalar fields are non-minimally coupled to each vector
field, is studied in this paper. In particular, we will seek a set of new
anisotropic power-law inflationary solutions to this model. Additionally, the
stability of... | [
{
"created": "Tue, 18 Apr 2023 10:08:34 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Apr 2023 10:07:40 GMT",
"version": "v2"
},
{
"created": "Fri, 28 Apr 2023 10:17:19 GMT",
"version": "v3"
},
{
"created": "Mon, 5 Feb 2024 03:53:04 GMT",
"version": "v4"
}
] | 2024-02-06 | [
[
"Do",
"Tuan Q.",
""
],
[
"Kao",
"W. F.",
""
]
] | Cosmological implication of a generalized model of two scalar and two vector fields, in which both scalar fields are non-minimally coupled to each vector field, is studied in this paper. In particular, we will seek a set of new anisotropic power-law inflationary solutions to this model. Additionally, the stability of t... |
gr-qc/0006064 | Milan Stefanik | Milan Stefanik, Jan Horsky | The Kerr-Schild ansatz for the Nariai spacetime and the generating
conjecture | 5 pages,LaTeX | Acta Phys.Slov. 50 (2000) 213-218 | null | null | gr-qc | null | We will show that the Nariai metric, i.e. the static spherically symmetric
vacuum spacetime with a cosmological constant, admits a conformally Kerr-Schild
spacetime representation. We find the vacuum solutions of the Einstein-Maxwell
equations for the Nariai metric using the Horsky-Mitskievich generating
conjecture.
| [
{
"created": "Mon, 19 Jun 2000 10:04:06 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Stefanik",
"Milan",
""
],
[
"Horsky",
"Jan",
""
]
] | We will show that the Nariai metric, i.e. the static spherically symmetric vacuum spacetime with a cosmological constant, admits a conformally Kerr-Schild spacetime representation. We find the vacuum solutions of the Einstein-Maxwell equations for the Nariai metric using the Horsky-Mitskievich generating conjecture. |
1904.12783 | Katy Clough Dr | Katy Clough, Pedro G. Ferreira and Macarena Lagos | On the growth of massive scalar hair around a Schwarzschild black hole | 9 pages, 8 figures, updated to incorporate low mass cases and referee
suggestions | Phys. Rev. D 100, 063014 (2019) | 10.1103/PhysRevD.100.063014 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Through numerical simulations of a minimally coupled massive Klein-Gordon
scalar field, we show that it is possible to grow hair on a Schwarzschild black
hole if one assumes an initial periodically time-varying but spatially
homogeneous scalar background. By "hair", we mean a non-trivial profile in the
scalar field. ... | [
{
"created": "Mon, 29 Apr 2019 15:51:38 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Sep 2019 08:41:13 GMT",
"version": "v2"
}
] | 2019-10-02 | [
[
"Clough",
"Katy",
""
],
[
"Ferreira",
"Pedro G.",
""
],
[
"Lagos",
"Macarena",
""
]
] | Through numerical simulations of a minimally coupled massive Klein-Gordon scalar field, we show that it is possible to grow hair on a Schwarzschild black hole if one assumes an initial periodically time-varying but spatially homogeneous scalar background. By "hair", we mean a non-trivial profile in the scalar field. We... |
1802.00590 | Hemza Azri | Hemza Azri and Durmus Demir | Induced Affine Inflation | 7 pages, 1 table and 3 figures, matches the published version | Phys. Rev. D 97 (2018), 044025 | 10.1103/PhysRevD.97.044025 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Induced gravity, metrical gravity in which gravitational constant arises from
vacuum expectation value of a heavy scalar, is known to suffer from Jordan
frame vs. Einstein frame ambiguity, especially in inflationary dynamics.
Induced gravity in affine geometry, as we show here, leads to an emergent
metric and gravity... | [
{
"created": "Fri, 2 Feb 2018 07:56:59 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Feb 2018 07:46:25 GMT",
"version": "v2"
}
] | 2018-02-23 | [
[
"Azri",
"Hemza",
""
],
[
"Demir",
"Durmus",
""
]
] | Induced gravity, metrical gravity in which gravitational constant arises from vacuum expectation value of a heavy scalar, is known to suffer from Jordan frame vs. Einstein frame ambiguity, especially in inflationary dynamics. Induced gravity in affine geometry, as we show here, leads to an emergent metric and gravity s... |
gr-qc/0011053 | David A. Lowe | David A. Lowe | Yes, semiclassical zero temperature black holes exist | 1 page, revtex | Phys.Rev.Lett. 87 (2001) 029001 | 10.1103/PhysRevLett.87.029001 | null | gr-qc | null | In a recent paper (gr-qc/0002007), Anderson, Hiscock and Taylor claimed that
"in all physically realistic cases, macroscopic zero temperature black hole
solutions do not exist." We show this conclusion was reached on the basis of an
incorrect calculation.
| [
{
"created": "Tue, 14 Nov 2000 21:53:36 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Lowe",
"David A.",
""
]
] | In a recent paper (gr-qc/0002007), Anderson, Hiscock and Taylor claimed that "in all physically realistic cases, macroscopic zero temperature black hole solutions do not exist." We show this conclusion was reached on the basis of an incorrect calculation. |
1410.6580 | Hiroshi Kozaki | Hiroshi Kozaki, Tatsuhiko Koike and Hideki Ishihara | Membranes with a symmetry of cohomogeneity one | null | null | 10.1103/PhysRevD.91.025007 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the dynamics of the Nambu-Goto membranes with cohomogeneity one
symmetry, i.e., the membranes whose trajectories are foliated by homogeneous
surfaces. It is shown that the equation of motion reduces to a geodesic
equation on a certain manifold, which is constructed from the original
spacetime and Killing vec... | [
{
"created": "Fri, 24 Oct 2014 05:46:13 GMT",
"version": "v1"
},
{
"created": "Fri, 31 Oct 2014 04:55:08 GMT",
"version": "v2"
}
] | 2015-06-23 | [
[
"Kozaki",
"Hiroshi",
""
],
[
"Koike",
"Tatsuhiko",
""
],
[
"Ishihara",
"Hideki",
""
]
] | We study the dynamics of the Nambu-Goto membranes with cohomogeneity one symmetry, i.e., the membranes whose trajectories are foliated by homogeneous surfaces. It is shown that the equation of motion reduces to a geodesic equation on a certain manifold, which is constructed from the original spacetime and Killing vecto... |
2306.04069 | De-Chang Dai | De-Chang Dai, Dejan Stojkovic | Superluminal propagation along the brane in space with extra dimensions | 6 pages, 8 figures, | Eur. Phys. J. C (2024) 84:175 | 10.1140/epjc/s10052-024-12535-w | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We demonstrate that a model with extra dimensions formulated in Csaki et al.
(Phys Rev D 62, 045015), which fatefully reproduces Friedmann-Robertson-Walker
(FRW) equations on the brane, allows for an apparent superluminal propagation
of massless signals. Namely, a massive brane curves the spacetime and affects
the tr... | [
{
"created": "Wed, 7 Jun 2023 00:02:50 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Feb 2024 07:04:16 GMT",
"version": "v2"
}
] | 2024-02-23 | [
[
"Dai",
"De-Chang",
""
],
[
"Stojkovic",
"Dejan",
""
]
] | We demonstrate that a model with extra dimensions formulated in Csaki et al. (Phys Rev D 62, 045015), which fatefully reproduces Friedmann-Robertson-Walker (FRW) equations on the brane, allows for an apparent superluminal propagation of massless signals. Namely, a massive brane curves the spacetime and affects the traj... |
gr-qc/0407009 | Akira Ohashi | Akira Ohashi and Masa-aki Sakagami | Massive quasi-normal mode | 12 pages, 10 figures, accepted for publication in Classical Quantum
Gravity | Class.Quant.Grav. 21 (2004) 3973-3984 | 10.1088/0264-9381/21/16/010 | null | gr-qc | null | This paper purposes to study quasi-normal modes due to massive scalar fields.
We, in particular, investigate the dependence of QNM frequencies on the field
mass. By this research, we find that there are quasi-normal modes with
arbitrarily long life when the field mass has special values. It is also found
that QNM can... | [
{
"created": "Fri, 2 Jul 2004 06:56:14 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Ohashi",
"Akira",
""
],
[
"Sakagami",
"Masa-aki",
""
]
] | This paper purposes to study quasi-normal modes due to massive scalar fields. We, in particular, investigate the dependence of QNM frequencies on the field mass. By this research, we find that there are quasi-normal modes with arbitrarily long life when the field mass has special values. It is also found that QNM can d... |
gr-qc/9902002 | Lior M. Burko | Lior M. Burko | Dipole perturbations of the Reissner-Nordstrom solution. II. The axial
case | Submitted to Phys. Rev. D | Phys.Rev. D59 (1999) 084003 | 10.1103/PhysRevD.59.084003 | null | gr-qc | null | We study the linear metric perturbations of the Reissner-Nordstr\"{o}m
solution for the case of axial perturbation modes. We find that the well-known
perturbative analysis fails for the case of dipole $(l=1)$ perturbations,
although valid for higher multipoles. We define new radial functions, with
which the perturbat... | [
{
"created": "Mon, 1 Feb 1999 00:12:48 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Burko",
"Lior M.",
""
]
] | We study the linear metric perturbations of the Reissner-Nordstr\"{o}m solution for the case of axial perturbation modes. We find that the well-known perturbative analysis fails for the case of dipole $(l=1)$ perturbations, although valid for higher multipoles. We define new radial functions, with which the perturbatio... |
1108.5224 | Tim Koslowski A | Tim Koslowski | Shape Dynamics | 4 pages LaTeX, no figures | J. Phys.: Conf. Ser. (2012) 360, 012059 | 10.1088/1742-6596/360/1/012059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General Relativity can be reformulated as a geometrodynamical theory, called
Shape Dynamics, that is not based on spacetime (in particular refoliation)
symmetry but on spatial diffeomorphism and local spatial conformal symmetry.
This leads to a constraint algebra that is (unlike General Relativity) a Lie
algebra, whe... | [
{
"created": "Fri, 26 Aug 2011 01:33:42 GMT",
"version": "v1"
}
] | 2012-05-24 | [
[
"Koslowski",
"Tim",
""
]
] | General Relativity can be reformulated as a geometrodynamical theory, called Shape Dynamics, that is not based on spacetime (in particular refoliation) symmetry but on spatial diffeomorphism and local spatial conformal symmetry. This leads to a constraint algebra that is (unlike General Relativity) a Lie algebra, where... |
gr-qc/9806055 | Sanjay Jhingan | S. S. Deshingkar, S. Jhingan and P. S. Joshi | On the global visibility of singularity in quasi-spherical collapse | Latex file, 32 pages, 12 postscript figures. To appear in the Journal
of General Relativity and Gravitation | Gen.Rel.Grav. 30 (1998) 1477-1499 | 10.1023/A:1018813108516 | null | gr-qc | null | We analyze here the issue of local versus the global visibility of a
singularity that forms in gravitational collapse of a dust cloud, which has
important implications for the weak and strong versions of the cosmic
censorship hypothesis. We find conditions as to when a singularity will be only
locally naked, rather t... | [
{
"created": "Thu, 11 Jun 1998 12:16:27 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Deshingkar",
"S. S.",
""
],
[
"Jhingan",
"S.",
""
],
[
"Joshi",
"P. S.",
""
]
] | We analyze here the issue of local versus the global visibility of a singularity that forms in gravitational collapse of a dust cloud, which has important implications for the weak and strong versions of the cosmic censorship hypothesis. We find conditions as to when a singularity will be only locally naked, rather tha... |
gr-qc/9804007 | Herbert Balasin | P.C. Aichelburg (University of Vienna), H. Balasin (TU-Wien) | ADM and Bondi four-momenta for the ultrarelativistic Schwarzschild black
hole | Changes in the expression used for the ADM four-momentum without
altering the result, correction of some minor typing errors | Class.Quant.Grav. 15 (1998) 3841-3844 | 10.1088/0264-9381/15/12/012 | UWThPh 1998-12, TUW 98/08 | gr-qc | null | We argue that it is possible to assign Bondi as well as ADM four-momentum to
the ultrarelativistic limit of the Schwarzschild black hole in agreement to
what is expected on physical grounds: The Bondi-momentum is lightlike and equal
to the ADM-momentum up to the retarded time when particle and radiation escape
to inf... | [
{
"created": "Fri, 3 Apr 1998 09:21:48 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Jul 1998 08:19:24 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Aichelburg",
"P. C.",
"",
"University of Vienna"
],
[
"Balasin",
"H.",
"",
"TU-Wien"
]
] | We argue that it is possible to assign Bondi as well as ADM four-momentum to the ultrarelativistic limit of the Schwarzschild black hole in agreement to what is expected on physical grounds: The Bondi-momentum is lightlike and equal to the ADM-momentum up to the retarded time when particle and radiation escape to infin... |
2201.01295 | Monika Pietrzyk Dr | Monika E. Pietrzyk and C\'ecile Barbachoux | On the Covariant Hamilton-Jacobi Equation for the Teleparallel
Equivalent of General Relativity | 11 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The covariant Hamilton-Jacobi equation for the Teleparallel Equivalent of
General Relativity is derived based on the analysis of the second-class
constraints within the covariant Hamiltonian theory of De Donder-Weyl according
to the constraints algorithm developed by Kanatchikov.
| [
{
"created": "Tue, 4 Jan 2022 18:57:32 GMT",
"version": "v1"
}
] | 2022-01-05 | [
[
"Pietrzyk",
"Monika E.",
""
],
[
"Barbachoux",
"Cécile",
""
]
] | The covariant Hamilton-Jacobi equation for the Teleparallel Equivalent of General Relativity is derived based on the analysis of the second-class constraints within the covariant Hamiltonian theory of De Donder-Weyl according to the constraints algorithm developed by Kanatchikov. |
1905.03233 | Piero Nicolini | Marco Knipfer, Sven K\"oppel, Jonas Mureika, Piero Nicolini | Generalized Uncertainty Principle and Black Holes in Higher Dimensional
Self-Complete Gravity | 32 pages, 8 figures, 1 table, revised version in press on JCAP | JCAP 1908 (2019) no.08, 008 | 10.1088/1475-7516/2019/08/008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider generalized uncertainty principle (GUP) effects in
higher dimensional black hole spacetimes via a nonlocal gravity approach. We
study three possible modifications of momentum space measure emerging from GUP,
including the original Kempf-Mangano-Mann (KMM) proposal. By following the KMM
model... | [
{
"created": "Wed, 8 May 2019 17:43:31 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Aug 2019 10:56:44 GMT",
"version": "v2"
}
] | 2019-09-10 | [
[
"Knipfer",
"Marco",
""
],
[
"Köppel",
"Sven",
""
],
[
"Mureika",
"Jonas",
""
],
[
"Nicolini",
"Piero",
""
]
] | In this paper we consider generalized uncertainty principle (GUP) effects in higher dimensional black hole spacetimes via a nonlocal gravity approach. We study three possible modifications of momentum space measure emerging from GUP, including the original Kempf-Mangano-Mann (KMM) proposal. By following the KMM model w... |
1711.07290 | Sunny Vagnozzi | Jibitesh Dutta, Wompherdeiki Khyllep, Emmanuel N. Saridakis, Nicola
Tamanini, Sunny Vagnozzi | Cosmological dynamics of mimetic gravity | 30 pages, 7 figures. Final version published in JCAP | JCAP 1802 (2018) 041 | 10.1088/1475-7516/2018/02/041 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a detailed investigation of the dynamical behavior of mimetic
gravity with a general potential for the mimetic scalar field. Performing a
phase-space and stability analysis, we show that the scenario at hand can
successfully describe the thermal history of the universe, namely the
successive sequence of ra... | [
{
"created": "Mon, 20 Nov 2017 12:50:05 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Feb 2018 10:16:08 GMT",
"version": "v2"
}
] | 2018-12-13 | [
[
"Dutta",
"Jibitesh",
""
],
[
"Khyllep",
"Wompherdeiki",
""
],
[
"Saridakis",
"Emmanuel N.",
""
],
[
"Tamanini",
"Nicola",
""
],
[
"Vagnozzi",
"Sunny",
""
]
] | We present a detailed investigation of the dynamical behavior of mimetic gravity with a general potential for the mimetic scalar field. Performing a phase-space and stability analysis, we show that the scenario at hand can successfully describe the thermal history of the universe, namely the successive sequence of radi... |
2112.07388 | Oliver Sch\"on | Oliver Sch\"on, Daniela D. Doneva | Tensor-Multi-Scalar Gravity: Equations of Motion to 2.5 post-Newtonian
Order | 34 pages, close to published version | Physical Review D (Vol. 105, No. 6, 2022) | 10.1103/PhysRevD.105.064034 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper we take a step towards the generalization of the
post-Newtonian formalism to tensor-multi-scalar theories. These are theories
where we have more than one scalar field being mediators of the gravitational
interaction in addition to the spacetime metric. They are very natural
extensions of Einstein... | [
{
"created": "Tue, 14 Dec 2021 13:28:54 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Dec 2021 14:58:26 GMT",
"version": "v2"
},
{
"created": "Wed, 23 Mar 2022 13:43:16 GMT",
"version": "v3"
}
] | 2022-03-24 | [
[
"Schön",
"Oliver",
""
],
[
"Doneva",
"Daniela D.",
""
]
] | In the present paper we take a step towards the generalization of the post-Newtonian formalism to tensor-multi-scalar theories. These are theories where we have more than one scalar field being mediators of the gravitational interaction in addition to the spacetime metric. They are very natural extensions of Einstein's... |
gr-qc/0703089 | Ralf Lehnert | Ralf Lehnert | Quantum-gravity phenomenology, Lorentz symmetry, and the SME | 8 pages, 2 figures, Plenary talk at 12th Mexican School on Particles
and Fields and 6th Latin American Symposium on High Energy Physics
(VI-Silafae/XII-MSPF), Puerto Vallarta, Mexico, 1-8 Nov 2006 | AIPConf.Proc.917:138-145,2007 | 10.1063/1.2751950 | MIT-CPT-3822 | gr-qc | null | Violations of spacetime symmetries have recently been identified as promising
signatures for physics underlying the Standard Model. The present talk gives an
overview over various topics in this field: The motivations for
spacetime-symmetry research, including some mechanisms for Lorentz breaking,
are reviewed. An ef... | [
{
"created": "Fri, 16 Mar 2007 21:41:12 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Lehnert",
"Ralf",
""
]
] | Violations of spacetime symmetries have recently been identified as promising signatures for physics underlying the Standard Model. The present talk gives an overview over various topics in this field: The motivations for spacetime-symmetry research, including some mechanisms for Lorentz breaking, are reviewed. An effe... |
1805.10810 | Sergey Yu. Vernov | E. Elizalde, S.D. Odintsov, E.O. Pozdeeva, S.Yu. Vernov | De Sitter and Power-law Solutions in Non-local Gauss-Bonnet Gravity | 15 pages, v2: accepted for publication in International Journal of
Geometric Methods in Modern Physics, references added | Int. J. Geom. Meth. Mod. Phys. 15 (2018) 1850188 | 10.1142/S0219887818501888 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cosmological dynamics of a non-locally corrected gravity theory,
involving a power of the inverse d'Alembertian, is investigated. Casting the
dynamical equations into local form, the fixed points of the models are
derived, as well as corresponding de Sitter and power-law solutions. Necessary
and sufficient condit... | [
{
"created": "Mon, 28 May 2018 08:27:15 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Aug 2018 11:47:06 GMT",
"version": "v2"
}
] | 2018-11-06 | [
[
"Elizalde",
"E.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Pozdeeva",
"E. O.",
""
],
[
"Vernov",
"S. Yu.",
""
]
] | The cosmological dynamics of a non-locally corrected gravity theory, involving a power of the inverse d'Alembertian, is investigated. Casting the dynamical equations into local form, the fixed points of the models are derived, as well as corresponding de Sitter and power-law solutions. Necessary and sufficient conditio... |
gr-qc/9510013 | David Hartley | David Hartley, (GMD - German National Research Center for Information
Technology, St. Augustin, Germany) | Normal frames for non-Riemannian connections | 4 pages, plain TeX. To appear in Class. Quantum Grav | Class.Quant.Grav.12:L103-L106,1995 | 10.1088/0264-9381/12/11/001 | null | gr-qc | null | The principal properties of geodesic normal coordinates are the vanishing of
the connection components and first derivatives of the metric components at
some point. It is well-known that these hold only at points where the
connection has vanishing torsion and non-metricity. However, it is shown that
normal frames, po... | [
{
"created": "Mon, 9 Oct 1995 09:42:02 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Hartley",
"David",
""
]
] | The principal properties of geodesic normal coordinates are the vanishing of the connection components and first derivatives of the metric components at some point. It is well-known that these hold only at points where the connection has vanishing torsion and non-metricity. However, it is shown that normal frames, poss... |
2402.14913 | Ra\'ul Carballo-Rubio | Ra\'ul Carballo-Rubio, Francesco Di Filippo, Stefano Liberati and Matt
Visser | Mass inflation without Cauchy horizons | 6 pages, 3 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Mass inflation is a well established instability, conventionally associated
to Cauchy horizons (which are also inner trapping horizons) of stationary
geometries, leading to a divergent exponential buildup of energy. We show here
that finite (but often large) exponential buildups of energy are generically
present for ... | [
{
"created": "Thu, 22 Feb 2024 19:00:01 GMT",
"version": "v1"
}
] | 2024-02-26 | [
[
"Carballo-Rubio",
"Raúl",
""
],
[
"Di Filippo",
"Francesco",
""
],
[
"Liberati",
"Stefano",
""
],
[
"Visser",
"Matt",
""
]
] | Mass inflation is a well established instability, conventionally associated to Cauchy horizons (which are also inner trapping horizons) of stationary geometries, leading to a divergent exponential buildup of energy. We show here that finite (but often large) exponential buildups of energy are generically present for dy... |
1507.03093 | Milovan Vasilic | Milovan Vasili\'c | Geometric sigma model of the Universe | 31 pages, 9 figures | Chinese Physics C Vol. 41, No. 5 (2017) 055102 | 10.1088/1674-1137/41/5/055102 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The purpose of this work is to demonstrate how an arbitrarily chosen
background of the Universe can be made a solution of a simple geometric sigma
model. Geometric sigma models are purely geometric theories in which spacetime
coordinates are seen as scalar fields coupled to gravity. Although they look
like ordinary s... | [
{
"created": "Sat, 11 Jul 2015 10:57:25 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jul 2016 15:20:50 GMT",
"version": "v2"
},
{
"created": "Sat, 26 Nov 2016 12:32:58 GMT",
"version": "v3"
},
{
"created": "Mon, 23 Jan 2017 12:18:26 GMT",
"version": "v4"
},
{
"cr... | 2017-04-03 | [
[
"Vasilić",
"Milovan",
""
]
] | The purpose of this work is to demonstrate how an arbitrarily chosen background of the Universe can be made a solution of a simple geometric sigma model. Geometric sigma models are purely geometric theories in which spacetime coordinates are seen as scalar fields coupled to gravity. Although they look like ordinary sig... |
1206.5976 | Sergey Cherkas L | S. L. Cherkas and V. L. Kalashnikov | Can the scale factor be rippled? | 10 pages, 5 figures | Nonlinear Phenomena in Complex Systems 15 (2012) 253-263 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We address an issue: would the cosmological scale factor be a locally
oscillating quantity? This problem is examined in the framework of two
classical 1+1-dimensional models: the first one is a string against a curved
background, and the second one is an inhomogeneous Bianchi I model. For the
string model, it is show... | [
{
"created": "Tue, 26 Jun 2012 12:56:27 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Jul 2012 07:45:35 GMT",
"version": "v2"
}
] | 2015-04-24 | [
[
"Cherkas",
"S. L.",
""
],
[
"Kalashnikov",
"V. L.",
""
]
] | We address an issue: would the cosmological scale factor be a locally oscillating quantity? This problem is examined in the framework of two classical 1+1-dimensional models: the first one is a string against a curved background, and the second one is an inhomogeneous Bianchi I model. For the string model, it is shown ... |
2203.13937 | Ajit Mehta | Ajit Kumar Mehta, Alessandra Buonanno, Roberto Cotesta, Abhirup Ghosh,
Noah Sennett, Jan Steinhoff | Tests of General Relativity with Gravitational-Wave Observations using a
Flexible--Theory-Independent Method | 24 pages, 13 figures | Phys. Rev. D 107, 044020 (2023) | 10.1103/PhysRevD.107.044020 | LIGO-P2200083-v2 | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We perform tests of General Relativity (GR) with gravitational waves (GWs)
from the inspiral stage of compact binaries using a theory-independent
framework, which adds generic phase corrections to each multipole of a GR
waveform model in frequency domain. This method has been demonstrated on
LIGO-Virgo observations t... | [
{
"created": "Fri, 25 Mar 2022 23:37:32 GMT",
"version": "v1"
}
] | 2023-04-05 | [
[
"Mehta",
"Ajit Kumar",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Cotesta",
"Roberto",
""
],
[
"Ghosh",
"Abhirup",
""
],
[
"Sennett",
"Noah",
""
],
[
"Steinhoff",
"Jan",
""
]
] | We perform tests of General Relativity (GR) with gravitational waves (GWs) from the inspiral stage of compact binaries using a theory-independent framework, which adds generic phase corrections to each multipole of a GR waveform model in frequency domain. This method has been demonstrated on LIGO-Virgo observations to ... |
1407.3401 | Saulo Pereira H | A. Pinho S. S., S. H. Pereira and J. F. Jesus | A new approach on the stability analysis in ELKO cosmology | 16 pages, some new comments in the Introduction and at the begining
of Section II | Eur. Phys. J. C (2015) 75:36 | 10.1140/epjc/s10052-015-3260-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work it has been developed a new approach to study the stability of a
system composed by an ELKO field interacting with dark matter, which could give
some contribution in order to alleviate the cosmic coincidence problem. It is
assumed that the potential which characterizes the ELKO field is not specified,
bu... | [
{
"created": "Sat, 12 Jul 2014 17:29:06 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Jan 2015 19:19:24 GMT",
"version": "v2"
}
] | 2015-02-04 | [
[
"S.",
"A. Pinho S.",
""
],
[
"Pereira",
"S. H.",
""
],
[
"Jesus",
"J. F.",
""
]
] | In this work it has been developed a new approach to study the stability of a system composed by an ELKO field interacting with dark matter, which could give some contribution in order to alleviate the cosmic coincidence problem. It is assumed that the potential which characterizes the ELKO field is not specified, but ... |
2407.15753 | Askold Vilkha | Askold Vilkha (1), Anjali Yelikar (1), Richard O'Shaughnessy (1),
Jocelyn Read (2) ((1) Center for Computational Relativity and Gravitation
Rochester Institute of Technology, (2) Nicholas and Lee Begovich Center for
Gravitational-Wave Physics and Astronomy California State University
Fullerton) | Inference on neutron star parameters and the nuclear equation of state
with RIFT, using prior EOS information | null | null | null | LIGO DCC 2400278 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we present an inference method for determining neutron star
parameters and constraining the nuclear equation of state (EOS) using the RIFT
parameter inference engine. We incorporate externally-produced prior
information about the EOS to improve the accuracy and efficiency of the
inference process. We a... | [
{
"created": "Mon, 22 Jul 2024 15:58:57 GMT",
"version": "v1"
}
] | 2024-07-23 | [
[
"Vilkha",
"Askold",
""
],
[
"Yelikar",
"Anjali",
""
],
[
"O'Shaughnessy",
"Richard",
""
],
[
"Read",
"Jocelyn",
""
]
] | In this paper, we present an inference method for determining neutron star parameters and constraining the nuclear equation of state (EOS) using the RIFT parameter inference engine. We incorporate externally-produced prior information about the EOS to improve the accuracy and efficiency of the inference process. We app... |
0812.1666 | Suman Ghosh | Suman Ghosh and Sayan Kar | Bulk spacetimes for cosmological braneworlds with a time--dependent
extra dimension | 31 pages, 10 figures, to appear in P.R.D | Phys.Rev.D80:064024,2009 | 10.1103/PhysRevD.80.064024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the possibilities of constructing bulk spacetimes in five
dimensions for warped braneworld models with a spatially flat
Friedmann-Robertson-Walker (FRW) line element on the 3-brane and with a
time-dependent extra dimension. Our first step in this direction involves
looking at the status of energy condition... | [
{
"created": "Tue, 9 Dec 2008 11:06:48 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Jan 2009 09:03:48 GMT",
"version": "v2"
},
{
"created": "Tue, 31 Mar 2009 09:50:59 GMT",
"version": "v3"
},
{
"created": "Mon, 24 Aug 2009 08:06:43 GMT",
"version": "v4"
}
] | 2009-11-06 | [
[
"Ghosh",
"Suman",
""
],
[
"Kar",
"Sayan",
""
]
] | We explore the possibilities of constructing bulk spacetimes in five dimensions for warped braneworld models with a spatially flat Friedmann-Robertson-Walker (FRW) line element on the 3-brane and with a time-dependent extra dimension. Our first step in this direction involves looking at the status of energy conditions ... |
gr-qc/9708037 | Eric Poisson | Stephen W. Leonard and Eric Poisson | Gravitational waves from binary systems in circular orbits: Convergence
of a dressed multipole truncation | 9 pages, ReVTeX, 1 postscript figure | Class.Quant.Grav. 15 (1998) 2075-2081 | 10.1088/0264-9381/15/8/002 | null | gr-qc | null | The gravitational radiation originating from a compact binary system in
circular orbit is usually expressed as an infinite sum over radiative multipole
moments. In a slow-motion approximation, each multipole moment is then
expressed as a post-Newtonian expansion in powers of v/c, the ratio of the
orbital velocity to ... | [
{
"created": "Sun, 17 Aug 1997 20:52:55 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Leonard",
"Stephen W.",
""
],
[
"Poisson",
"Eric",
""
]
] | The gravitational radiation originating from a compact binary system in circular orbit is usually expressed as an infinite sum over radiative multipole moments. In a slow-motion approximation, each multipole moment is then expressed as a post-Newtonian expansion in powers of v/c, the ratio of the orbital velocity to th... |
gr-qc/0508060 | Peter Kuhfittig K.F. | Peter K.F. Kuhfittig | Wormholes supported by small amounts of exotic matter: some corrections | 6 pages AMSTeX | null | null | null | gr-qc | null | It was pointed out by Fewster and Roman that some of the wormhole models
discussed by Kuhfittig suffer from the failure to distinguish proper from
coordinate distances. One of the advantages of "designer wormholes" is that
models can be altered. The purpose of this note is to show that by adjusting
the metric coeffic... | [
{
"created": "Mon, 15 Aug 2005 18:01:53 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | It was pointed out by Fewster and Roman that some of the wormhole models discussed by Kuhfittig suffer from the failure to distinguish proper from coordinate distances. One of the advantages of "designer wormholes" is that models can be altered. The purpose of this note is to show that by adjusting the metric coefficie... |
2101.01203 | Paul Rodgers Mr | Oscar J. C. Dias, Ramon Masachs, Paul Rodgers | Boson stars and solitons confined in a Minkowski box | 35 pages; 17 figures. v2: Added right panel of Fig. 2 with details of
secondary soliton family and associated discussion | null | 10.1007/JHEP04(2021)236 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the static charged black hole bomb system, originally designed
for a (uncharged) rotating superradiant system by Press and Teukolsky. A
charged scalar field confined in a Minkowski cavity with a Maxwell gauge field
has a quantized spectrum of normal modes that can fit inside the box.
Back-reacting non-lin... | [
{
"created": "Mon, 4 Jan 2021 19:08:31 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Feb 2021 09:19:20 GMT",
"version": "v2"
}
] | 2021-05-12 | [
[
"Dias",
"Oscar J. C.",
""
],
[
"Masachs",
"Ramon",
""
],
[
"Rodgers",
"Paul",
""
]
] | We consider the static charged black hole bomb system, originally designed for a (uncharged) rotating superradiant system by Press and Teukolsky. A charged scalar field confined in a Minkowski cavity with a Maxwell gauge field has a quantized spectrum of normal modes that can fit inside the box. Back-reacting non-linea... |
1804.01893 | Martin Lesourd Mr | Martin Lesourd | A new singularity theorem for black holes which allows chronology
violation in the interior | Classical.Quantum.Gravity, accepted.
http://iopscience.iop.org/article/10.1088/1361-6382/aae75c | null | 10.1088/1361-6382/aae75c | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The interior of the Kerr solution is singular and achronological. The classic
singularity theorem by Hawking and Penrose relies on chronology, and thus does
not apply to the Kerr solution. An improvement of their theorem by Kriele
partially removes the requirement of chronology. However, both of these
singularity the... | [
{
"created": "Thu, 5 Apr 2018 15:02:24 GMT",
"version": "v1"
},
{
"created": "Thu, 10 May 2018 19:27:15 GMT",
"version": "v2"
},
{
"created": "Thu, 16 Aug 2018 09:18:16 GMT",
"version": "v3"
},
{
"created": "Wed, 22 Aug 2018 10:15:15 GMT",
"version": "v4"
},
{
"cr... | 2018-12-05 | [
[
"Lesourd",
"Martin",
""
]
] | The interior of the Kerr solution is singular and achronological. The classic singularity theorem by Hawking and Penrose relies on chronology, and thus does not apply to the Kerr solution. An improvement of their theorem by Kriele partially removes the requirement of chronology. However, both of these singularity theor... |
0807.4596 | Farook Rahaman | F. Rahaman, M. Kalam and K. A. Rahman | Wormhole geometry from real feasible matter sources | 7 pages, 3 figures. To appear in Int.J.Theor.Phys | Int.J.Theor.Phys.48:471-475,2009 | 10.1007/s10773-008-9822-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a prescription of real feasible sources that supply fuel to
construct a traversable wormhole. A class of exact solutions for
Einstein-Maxwell field equations describing wormhole with an anisotropic matter
distribution has been presented. The anisotropy plays a crucial role for the
existence of the spacetim... | [
{
"created": "Tue, 29 Jul 2008 08:39:11 GMT",
"version": "v1"
}
] | 2009-02-18 | [
[
"Rahaman",
"F.",
""
],
[
"Kalam",
"M.",
""
],
[
"Rahman",
"K. A.",
""
]
] | We provide a prescription of real feasible sources that supply fuel to construct a traversable wormhole. A class of exact solutions for Einstein-Maxwell field equations describing wormhole with an anisotropic matter distribution has been presented. The anisotropy plays a crucial role for the existence of the spacetime ... |
1810.05540 | Rodrigo Maier | Rodrigo Maier and Ivano Dami\~ao Soares | Curvature Late-Time Acceleration in an Eternal Universe | 8 pages, 6 figures. arXiv admin note: text overlap with
arXiv:1710.06911 | null | 10.1088/1475-7516/2018/12/029 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a FLRW universe considering an anisotropic scaling between space
and time at extremely high and low energies only. In this context, Friedmann
equations contain an additional term arising from spatial curvature which
implements nonsingular bounces in the early Universe. The matter content of the
model is ... | [
{
"created": "Thu, 11 Oct 2018 13:54:10 GMT",
"version": "v1"
}
] | 2018-12-26 | [
[
"Maier",
"Rodrigo",
""
],
[
"Soares",
"Ivano Damião",
""
]
] | We construct a FLRW universe considering an anisotropic scaling between space and time at extremely high and low energies only. In this context, Friedmann equations contain an additional term arising from spatial curvature which implements nonsingular bounces in the early Universe. The matter content of the model is a ... |
1105.2023 | Kostiantyn Ropotenko | Kostiantyn Ropotenko | Rotational terms and quantum degeneracy in black holes | 8 pages, no figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is believed that the first law of black-hole mechanics has no independent
physical significance and acquires it only after identifying with the first law
of thermodynamics. It is argued here that the first law of black-hole mechanics
has a direct physical significance: not only the term $\Omega dJ$ but all its
ter... | [
{
"created": "Tue, 10 May 2011 19:14:47 GMT",
"version": "v1"
}
] | 2011-05-11 | [
[
"Ropotenko",
"Kostiantyn",
""
]
] | It is believed that the first law of black-hole mechanics has no independent physical significance and acquires it only after identifying with the first law of thermodynamics. It is argued here that the first law of black-hole mechanics has a direct physical significance: not only the term $\Omega dJ$ but all its terms... |
gr-qc/0510049 | Paul Langlois | Paul Langlois | Causal particle detectors and topology | 47 pages, 9 figures | Annals Phys. 321 (2006) 2027-2070 | 10.1016/j.aop.2006.01.013 | null | gr-qc | null | We investigate particle detector responses in some topologically non-trivial
spacetimes. We extend a recently proposed regularization of the massless scalar
field Wightman function in 4-dimensional Minkowski space to arbitrary
dimension, to the massive scalar field, to quotients of Minkowski space under
discrete isom... | [
{
"created": "Mon, 10 Oct 2005 15:10:48 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Langlois",
"Paul",
""
]
] | We investigate particle detector responses in some topologically non-trivial spacetimes. We extend a recently proposed regularization of the massless scalar field Wightman function in 4-dimensional Minkowski space to arbitrary dimension, to the massive scalar field, to quotients of Minkowski space under discrete isomet... |
2403.15537 | Leonardo Giuliano Trombetta | Eugeny Babichev, Ignacy Sawicki, Leonardo G. Trombetta | The cosmic trimmer: Black-hole hair in scalar-Gauss-Bonnet gravity is
altered by cosmology | 6 pages | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Static black holes in general relativity modified by a linear scalar coupling
to the Gauss-Bonnet invariant always carry hair. We show that the same
mechanism that creates the hair makes it incompatible with a cosmological
horizon. Other scalar-tensor models do not have this problem when
time-dependence of the scalar... | [
{
"created": "Fri, 22 Mar 2024 18:00:01 GMT",
"version": "v1"
}
] | 2024-04-02 | [
[
"Babichev",
"Eugeny",
""
],
[
"Sawicki",
"Ignacy",
""
],
[
"Trombetta",
"Leonardo G.",
""
]
] | Static black holes in general relativity modified by a linear scalar coupling to the Gauss-Bonnet invariant always carry hair. We show that the same mechanism that creates the hair makes it incompatible with a cosmological horizon. Other scalar-tensor models do not have this problem when time-dependence of the scalar p... |
2209.10374 | Zhi-Zhang Peng | Zhi-Zhang Peng, Zhen-Min Zeng, Chengjie Fu, Zong-Kuan Guo | Generation of gravitational waves in dynamical Chern-Simons gravity | null | Phys. Rev. D 106, 124044 (2022) | 10.1103/PhysRevD.106.124044 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate gravitational waves (GWs) generated in a two-field
inflationary model with a non-canonical kinetic term, in which the
gravitational Chern-Simons term is coupled to a heavy dynamical field. In such
a model, primordial GWs experience a period of resonant amplification for some
modes. In addition, isocurv... | [
{
"created": "Wed, 21 Sep 2022 14:11:28 GMT",
"version": "v1"
}
] | 2023-01-11 | [
[
"Peng",
"Zhi-Zhang",
""
],
[
"Zeng",
"Zhen-Min",
""
],
[
"Fu",
"Chengjie",
""
],
[
"Guo",
"Zong-Kuan",
""
]
] | We investigate gravitational waves (GWs) generated in a two-field inflationary model with a non-canonical kinetic term, in which the gravitational Chern-Simons term is coupled to a heavy dynamical field. In such a model, primordial GWs experience a period of resonant amplification for some modes. In addition, isocurvat... |
1805.09577 | Francisco Jos\'e Maldonado Torralba | J.A.R. Cembranos, J. Gigante Valcarcel, F.J. Maldonado Torralba | Fermion dynamics in torsion theories | 17 pages, 2 figures, minor changes, conclusions unchanged. It matches
the version published in JCAP | JCAP04(2019)039 | 10.1088/1475-7516/2019/04/039 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we have studied the non-geodesical behaviour of particles with
spin 1/2 in Poincar\'e gauge theories of gravity, via the WKB method and the
Mathisson-Papapetrou equation. We have analysed the relation between the two
approaches and we have argued the different advantages associated with the WKB
approxima... | [
{
"created": "Thu, 24 May 2018 09:49:00 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Jun 2018 09:55:36 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Jun 2019 16:07:44 GMT",
"version": "v3"
}
] | 2019-06-05 | [
[
"Cembranos",
"J. A. R.",
""
],
[
"Valcarcel",
"J. Gigante",
""
],
[
"Torralba",
"F. J. Maldonado",
""
]
] | In this work we have studied the non-geodesical behaviour of particles with spin 1/2 in Poincar\'e gauge theories of gravity, via the WKB method and the Mathisson-Papapetrou equation. We have analysed the relation between the two approaches and we have argued the different advantages associated with the WKB approximati... |
gr-qc/0009036 | Bernhard Haisch | Bernard Haisch, Alfonso Rueda and York Dobyns | Inertial mass and the quantum vacuum fields | Annalen der Physik, in press | Annalen Phys.10:393-414,2001 | 10.1002/1521-3889(200105)10:5<393::AID-ANDP393>3.0.CO;2-Z | null | gr-qc | null | Even when the Higgs particle is finally detected, it will continue to be a
legitimate question to ask whether the inertia of matter as a reaction force
opposing acceleration is an intrinsic or extrinsic property of matter. General
relativity specifies which geodesic path a free particle will follow, but
geometrodynam... | [
{
"created": "Tue, 12 Sep 2000 19:29:40 GMT",
"version": "v1"
}
] | 2017-09-27 | [
[
"Haisch",
"Bernard",
""
],
[
"Rueda",
"Alfonso",
""
],
[
"Dobyns",
"York",
""
]
] | Even when the Higgs particle is finally detected, it will continue to be a legitimate question to ask whether the inertia of matter as a reaction force opposing acceleration is an intrinsic or extrinsic property of matter. General relativity specifies which geodesic path a free particle will follow, but geometrodynamic... |
2012.13526 | Masato Minamitsuji | Masato Minamitsuji | Disformal transformation of stationary and axisymmetric solutions in
modified gravity | 33 pages, 4 figures, published version | Phys. Rev. D102, 124017(2020) | 10.1103/PhysRevD.102.124017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The extended scalar-tensor and vector-tensor theories admit black hole
solutions with the nontrivial profiles of the scalar and vector fields,
respectively. The disformal transformation maps a solution in a class of the
scalar-tensor or vector-tensor theories to that in another class, and hence it
can be a useful too... | [
{
"created": "Fri, 25 Dec 2020 06:28:14 GMT",
"version": "v1"
}
] | 2020-12-29 | [
[
"Minamitsuji",
"Masato",
""
]
] | The extended scalar-tensor and vector-tensor theories admit black hole solutions with the nontrivial profiles of the scalar and vector fields, respectively. The disformal transformation maps a solution in a class of the scalar-tensor or vector-tensor theories to that in another class, and hence it can be a useful tool ... |
gr-qc/0001041 | George Lavrelashvili | Arsen Khvedelidze, George Lavrelashvili, Takahiro Tanaka | On cosmological perturbations in FRW model with scalar field and false
vacuum decay | 4 p., Revtex. No changes in the text. Accepted for publication in
Phys. Rev. D | Phys.Rev. D62 (2000) 083501 | 10.1103/PhysRevD.62.083501 | OU-TAP 117, YITP-00-16 | gr-qc | null | The unconstrained reduced action corresponding to the dynamics of scalar
fluctuations about the Friedmann-Robertson-Walker (FRW) background is derived
using Dirac's method of description of singular Lagrangian systems. The results
are applied to so-called negative mode problem in description of tunneling
transitions ... | [
{
"created": "Sat, 15 Jan 2000 05:58:30 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Apr 2000 20:22:48 GMT",
"version": "v2"
},
{
"created": "Wed, 23 Aug 2000 08:09:56 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Khvedelidze",
"Arsen",
""
],
[
"Lavrelashvili",
"George",
""
],
[
"Tanaka",
"Takahiro",
""
]
] | The unconstrained reduced action corresponding to the dynamics of scalar fluctuations about the Friedmann-Robertson-Walker (FRW) background is derived using Dirac's method of description of singular Lagrangian systems. The results are applied to so-called negative mode problem in description of tunneling transitions wi... |
1502.05922 | Valeri Vardanyan | Valeri Vardanyan, Luca Amendola (ITP, University of Heidelberg,
Germany) | How can we tell whether dark energy is composed by multiple fields? | v2: 12 pages, no figures, minor changes, references added | Phys. Rev. D 92, 024009 (2015) | 10.1103/PhysRevD.92.024009 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dark energy is often assumed to be composed by a single scalar field. The
background cosmic expansion is not sufficient to determine whether this is true
or not. We study multi-field scalar-tensor models with a general dark matter
source and write the observable modified gravity parameters (effective
gravitational co... | [
{
"created": "Fri, 20 Feb 2015 16:27:46 GMT",
"version": "v1"
},
{
"created": "Thu, 21 May 2015 14:44:18 GMT",
"version": "v2"
}
] | 2015-07-15 | [
[
"Vardanyan",
"Valeri",
"",
"ITP, University of Heidelberg,\n Germany"
],
[
"Amendola",
"Luca",
"",
"ITP, University of Heidelberg,\n Germany"
]
] | Dark energy is often assumed to be composed by a single scalar field. The background cosmic expansion is not sufficient to determine whether this is true or not. We study multi-field scalar-tensor models with a general dark matter source and write the observable modified gravity parameters (effective gravitational cons... |
2107.05470 | Gabriel R. Bengochea | Gabriel Le\'on, Gabriel R. Bengochea | Enlightening the CSL model landscape in inflation | 18 pages, 2 Appendices. Improved version, accepted in EPJC | Eur. Phys. J. C 81, 1055 (2021) | 10.1140/epjc/s10052-021-09851-w | null | gr-qc astro-ph.CO quant-ph | http://creativecommons.org/licenses/by/4.0/ | We propose a novel realization for the natural extrapolation of the
continuous spontaneous localization (CSL) model, in order to account for the
origin of primordial inhomogeneities during inflation. This particular model is
based on three main elements: (i) the semiclassical gravity framework, (ii) a
collapse-genera... | [
{
"created": "Mon, 12 Jul 2021 14:37:02 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Dec 2021 13:33:38 GMT",
"version": "v2"
}
] | 2021-12-07 | [
[
"León",
"Gabriel",
""
],
[
"Bengochea",
"Gabriel R.",
""
]
] | We propose a novel realization for the natural extrapolation of the continuous spontaneous localization (CSL) model, in order to account for the origin of primordial inhomogeneities during inflation. This particular model is based on three main elements: (i) the semiclassical gravity framework, (ii) a collapse-generati... |
gr-qc/9904018 | Yongsung Yoon | Yongsung Yoon | Conformally Coupled Induced Gravity with Gradient Torsion | 8pages, LaTeX, no figure, to be appeared in PRD | Phys.Rev. D59 (1999) 127501 | 10.1103/PhysRevD.59.127501 | null | gr-qc | null | It is found that conformally coupled induced gravity with gradient torsion
gives a dilaton gravity in Riemann geometry. In the Einstein frame of the
dilaton gravity the conformal symmetry is hidden and a non-vanishing
cosmological constant is not plausible due to the constraint of the conformal
coupling.
| [
{
"created": "Wed, 7 Apr 1999 09:22:02 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Yoon",
"Yongsung",
""
]
] | It is found that conformally coupled induced gravity with gradient torsion gives a dilaton gravity in Riemann geometry. In the Einstein frame of the dilaton gravity the conformal symmetry is hidden and a non-vanishing cosmological constant is not plausible due to the constraint of the conformal coupling. |
1802.02764 | Sven Zschocke | Sven Zschocke | Light propagation in 2PN approximation in the field of one moving
monopole: I. Initial value problem | 53 pages, 1 figure | Classical and Quantum Gravity 35 (2018) 055013 | 10.1088/1361-6382/aa9976 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this investigation the light propagation in the gravitational field of one
arbitrarily moving body with monopole structure is considered in the second
post-Newtonian approximation. It is found that the light trajectory depends on
the acceleration of the body. Some of these acceleration terms are important in
order... | [
{
"created": "Thu, 8 Feb 2018 09:24:53 GMT",
"version": "v1"
}
] | 2018-02-09 | [
[
"Zschocke",
"Sven",
""
]
] | In this investigation the light propagation in the gravitational field of one arbitrarily moving body with monopole structure is considered in the second post-Newtonian approximation. It is found that the light trajectory depends on the acceleration of the body. Some of these acceleration terms are important in order t... |
1501.00428 | Farook Rahaman | A. Sepehri, Farook Rahaman, Anirudh Pradhan and Iftikar Hossain Sardar | Emergence and Expansion of Cosmic Space in BIonic system | Published in Phys.Lett. B741 (2014) 92-96 | Phys.Lett. B741 (2014) 92-96 | 10.1016/j.physletb.2014.12.030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Padmanabhan [arXiv:1206.4916] argued that the expansion rate of the
universe can be thought of as the emergence of space as cosmic time progresses
and is related to the difference between the surface degrees of freedom on the
holographic horizon and the bulk degrees of freedom inside. The main question
aris... | [
{
"created": "Thu, 11 Dec 2014 14:58:59 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Jan 2015 13:09:27 GMT",
"version": "v2"
}
] | 2015-01-08 | [
[
"Sepehri",
"A.",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Pradhan",
"Anirudh",
""
],
[
"Sardar",
"Iftikar Hossain",
""
]
] | Recently, Padmanabhan [arXiv:1206.4916] argued that the expansion rate of the universe can be thought of as the emergence of space as cosmic time progresses and is related to the difference between the surface degrees of freedom on the holographic horizon and the bulk degrees of freedom inside. The main question arises... |
1608.07314 | Suddhasattwa Brahma | Jibril Ben Achour, Suddhasattwa Brahma, Antonino Marciano | Spherically symmetric sector of self dual Ashtekar gravity coupled to
matter: Anomaly-free algebra of constraints with holonomy corrections | 22 pages, few references added | Phys. Rev. D 96, 026002 (2017) | 10.1103/PhysRevD.96.026002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using self dual Ashtekar variables, we investigate (at the effective level)
the spherically symmetry reduced model of loop quantum gravity, both in vacuum
and when coupled to a scalar field. Within the real Ashtekar-Barbero
formulation, the system scalar field coupled to spherically symmetric gravity
is known to poss... | [
{
"created": "Thu, 25 Aug 2016 21:31:23 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Oct 2016 15:09:24 GMT",
"version": "v2"
}
] | 2017-07-12 | [
[
"Achour",
"Jibril Ben",
""
],
[
"Brahma",
"Suddhasattwa",
""
],
[
"Marciano",
"Antonino",
""
]
] | Using self dual Ashtekar variables, we investigate (at the effective level) the spherically symmetry reduced model of loop quantum gravity, both in vacuum and when coupled to a scalar field. Within the real Ashtekar-Barbero formulation, the system scalar field coupled to spherically symmetric gravity is known to posses... |
1611.05878 | Astrid Eichhorn | Astrid Eichhorn, Stefan Lippoldt | Quantum gravity and Standard-Model-like fermions | 6 pages, 2 figures | null | 10.1016/j.physletb.2017.01.064 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discover that chiral symmetry does not act as an infrared attractor of the
renormalization group flow under the impact of quantum gravity fluctuations.
Thus, observationally viable quantum gravity models must respect chiral
symmetry. In our truncation, asymptotically safe gravity does, as a chiral
fixed point exis... | [
{
"created": "Thu, 17 Nov 2016 21:00:06 GMT",
"version": "v1"
}
] | 2017-02-08 | [
[
"Eichhorn",
"Astrid",
""
],
[
"Lippoldt",
"Stefan",
""
]
] | We discover that chiral symmetry does not act as an infrared attractor of the renormalization group flow under the impact of quantum gravity fluctuations. Thus, observationally viable quantum gravity models must respect chiral symmetry. In our truncation, asymptotically safe gravity does, as a chiral fixed point exists... |
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