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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0108076 | Gregory B. Cook | Gregory B. Cook | Corotating and irrotational binary black holes in quasi-circular orbits | 13 pages, no figures, revtex4; Content changed slightly to reflect
fact that regularized shift solutions do satisfy the isometry boundary
conditions | Phys.Rev. D65 (2002) 084003 | 10.1103/PhysRevD.65.084003 | null | gr-qc | null | A complete formalism for constructing initial data representing black-hole
binaries in quasi-equilibrium is developed. Radiation reaction prohibits, in
general, true equilibrium binary configurations. However, when the timescale
for orbital decay is much longer than the orbital period, a binary can be
considered to b... | [
{
"created": "Thu, 30 Aug 2001 17:40:13 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Sep 2001 19:07:31 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Cook",
"Gregory B.",
""
]
] | A complete formalism for constructing initial data representing black-hole binaries in quasi-equilibrium is developed. Radiation reaction prohibits, in general, true equilibrium binary configurations. However, when the timescale for orbital decay is much longer than the orbital period, a binary can be considered to be ... |
1301.5471 | Christian Boehmer | Christian G. Boehmer, Nicola Tamanini | A new approach to modifying theories of gravity | 9 pages, conservation equation discussion revised, Kasner type
solutions included | Foundations of Physics 43, 1478-1488 (2013) | 10.1007/s10701-013-9756-y | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new point of view for interpreting Newton's and Einstein's
theories of gravity. By taking inspiration from Continuum Mechanics and its
treatment of anisotropies, we formulate new gravitational actions for modified
theories of gravity. These models are simple and natural generalisations with
many interest... | [
{
"created": "Wed, 23 Jan 2013 11:30:35 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Oct 2013 11:30:00 GMT",
"version": "v2"
}
] | 2015-10-09 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Tamanini",
"Nicola",
""
]
] | We propose a new point of view for interpreting Newton's and Einstein's theories of gravity. By taking inspiration from Continuum Mechanics and its treatment of anisotropies, we formulate new gravitational actions for modified theories of gravity. These models are simple and natural generalisations with many interestin... |
0903.0661 | Stephen Minter | Stephen J. Minter, Kirk Wegter-McNelly, Raymond Y. Chiao | Do Mirrors for Gravitational Waves Exist? | 59 pages, 2 figures | null | 10.1016/j.physe.2009.06.056 | null | gr-qc cond-mat.supr-con | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Thin superconducting films are predicted to be highly reflective mirrors for
gravitational waves at microwave frequencies. The quantum mechanical
non-localizability of the negatively charged Cooper pairs, which is protected
from the localizing effect of decoherence by an energy gap, causes the pairs to
undergo non-pi... | [
{
"created": "Wed, 4 Mar 2009 00:27:22 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jun 2009 19:16:09 GMT",
"version": "v10"
},
{
"created": "Thu, 5 Mar 2009 23:47:14 GMT",
"version": "v2"
},
{
"created": "Mon, 16 Mar 2009 20:51:24 GMT",
"version": "v3"
},
{
"cr... | 2015-05-13 | [
[
"Minter",
"Stephen J.",
""
],
[
"Wegter-McNelly",
"Kirk",
""
],
[
"Chiao",
"Raymond Y.",
""
]
] | Thin superconducting films are predicted to be highly reflective mirrors for gravitational waves at microwave frequencies. The quantum mechanical non-localizability of the negatively charged Cooper pairs, which is protected from the localizing effect of decoherence by an energy gap, causes the pairs to undergo non-pict... |
1908.01312 | Vladimir Folomeev | Vladimir Dzhunushaliev, Vladimir Folomeev, Galia Nurtaeva, Sergei D.
Odintsov | Thick branes in higher-dimensional $f(R)$ gravity | 12 pages, 3 figures | Int. J. Geom. Meth. Mod. Phys. 17 (2020) no.03, 2050036 | 10.1142/S021988782050036X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the thick brane model within $f(R)\sim R^n$ modified gravity in
$D$-dimensional spacetimes with $D\geq 6$. The system under consideration
consists of two branes orthogonal to each other: the four-dimensional
Lorentzian brane and $(D-5)$-dimensional Euclidean one. It is numerically shown
that, for a given $D$... | [
{
"created": "Sun, 4 Aug 2019 10:29:48 GMT",
"version": "v1"
}
] | 2020-04-03 | [
[
"Dzhunushaliev",
"Vladimir",
""
],
[
"Folomeev",
"Vladimir",
""
],
[
"Nurtaeva",
"Galia",
""
],
[
"Odintsov",
"Sergei D.",
""
]
] | We study the thick brane model within $f(R)\sim R^n$ modified gravity in $D$-dimensional spacetimes with $D\geq 6$. The system under consideration consists of two branes orthogonal to each other: the four-dimensional Lorentzian brane and $(D-5)$-dimensional Euclidean one. It is numerically shown that, for a given $D$, ... |
1201.5244 | David Keitel | David Keitel, Reinhard Prix, Maria Alessandra Papa, Maham Siddiqi | An F-statistic based multi-detector veto for detector artifacts in
continuous-wave gravitational wave data | 2 pages, 1 figure, to be published in Proceedings of Statistical
Challenges in Modern Astronomy V, Springer 2012 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Continuous gravitational waves (CW) are expected from spinning neutron stars
with non-axisymmetric deformations. A network of interferometric detectors
(LIGO, Virgo and GEO600) is looking for these signals. They are predicted to be
very weak and retrievable only by integration over long observation times. One
of the ... | [
{
"created": "Wed, 25 Jan 2012 12:05:33 GMT",
"version": "v1"
}
] | 2012-01-26 | [
[
"Keitel",
"David",
""
],
[
"Prix",
"Reinhard",
""
],
[
"Papa",
"Maria Alessandra",
""
],
[
"Siddiqi",
"Maham",
""
]
] | Continuous gravitational waves (CW) are expected from spinning neutron stars with non-axisymmetric deformations. A network of interferometric detectors (LIGO, Virgo and GEO600) is looking for these signals. They are predicted to be very weak and retrievable only by integration over long observation times. One of the st... |
gr-qc/9712093 | Shin-ichi Nakariki | S. Nakariki, T. Masaki, K.Fukuma, T.Fukui, M.Mizouchi, T.Ohtani,
T.Tashiro | Interaction of massless Dirac field with a Poincar\'e gauge field | 10pages, RevTeX3.0 | Prog.Theor.Phys. 100 (1998) 179-190 | 10.1143/PTP.100.179 | null | gr-qc | null | In this paper we consider a model of Poincar\'e gauge theory (PGT) in which a
translational gauge field and a Lorentz gauge field are actually identified
with the Einstein's gravitational field and a pair of ``Yang-Mills'' field and
its partner, respectively.In this model we re-derive some special solutions and
take ... | [
{
"created": "Wed, 24 Dec 1997 06:35:12 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Nakariki",
"S.",
""
],
[
"Masaki",
"T.",
""
],
[
"Fukuma",
"K.",
""
],
[
"Fukui",
"T.",
""
],
[
"Mizouchi",
"M.",
""
],
[
"Ohtani",
"T.",
""
],
[
"Tashiro",
"T.",
""
]
] | In this paper we consider a model of Poincar\'e gauge theory (PGT) in which a translational gauge field and a Lorentz gauge field are actually identified with the Einstein's gravitational field and a pair of ``Yang-Mills'' field and its partner, respectively.In this model we re-derive some special solutions and take up... |
0809.1933 | Yong-Wan Kim | Yun Soo Myung, Yong-Wan Kim, and Young-Jai Park | Quasinormal modes from potentials surrounding the charged dilaton black
hole | 19 pages, 8 figures | Eur.Phys.J.C58:617-625,2008 | 10.1140/epjc/s10052-008-0802-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We clarify the purely imaginary quasinormal frequencies of a massless scalar
perturbation on the 3D charged-dilaton black holes. This case is quite
interesting because the potential-step appears outside the event horizon
similar to the case of the electromagnetic perturbations on the large
Schwarzschild-AdS black hol... | [
{
"created": "Thu, 11 Sep 2008 08:54:13 GMT",
"version": "v1"
}
] | 2008-12-18 | [
[
"Myung",
"Yun Soo",
""
],
[
"Kim",
"Yong-Wan",
""
],
[
"Park",
"Young-Jai",
""
]
] | We clarify the purely imaginary quasinormal frequencies of a massless scalar perturbation on the 3D charged-dilaton black holes. This case is quite interesting because the potential-step appears outside the event horizon similar to the case of the electromagnetic perturbations on the large Schwarzschild-AdS black holes... |
1212.6439 | Otakar Svitek | Otakar Svitek | Conformal infinity in Robinson-Trautman spacetimes with cosmological
constant | 4 pages, 2 figures, for ERE2011 Proceedings | AIP Conf. Proc. 1458: 531-534, 2012 | 10.1063/1.4734477 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/3.0/ | In past, the future asymptotic behavior (with respect to initial data on null
hypersurface) of Robinson-Trautman spacetime was examined and its past horizon
characterized. Therefore, only the investigation of conformal infinity is
missing from the picture. We would like to present some initial results
concerning conf... | [
{
"created": "Fri, 28 Dec 2012 00:08:00 GMT",
"version": "v1"
}
] | 2013-01-01 | [
[
"Svitek",
"Otakar",
""
]
] | In past, the future asymptotic behavior (with respect to initial data on null hypersurface) of Robinson-Trautman spacetime was examined and its past horizon characterized. Therefore, only the investigation of conformal infinity is missing from the picture. We would like to present some initial results concerning confor... |
gr-qc/0210054 | Nivaldo Agostinho Lemos | N. A. Lemos and G. A. Monerat | A Quantum Cosmological Model With Static and Dynamic Wormholes | LaTex file, 13 pages. To appear in General Relativity and Gravitation | Gen.Rel.Grav. 35 (2003) 423-436 | 10.1023/A:1022321916891 | null | gr-qc | null | Quantization is performed of a Friedmann-Robertson-Walker universe filled
with a conformally invariant scalar field and a perfect fluid with equation of
state $p=\alpha \rho$. A well-known discrete set of static quantum wormholes is
shown to exist for radiation ($\alpha =1/3$), and a novel continuous set is
found for... | [
{
"created": "Thu, 17 Oct 2002 13:00:12 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Lemos",
"N. A.",
""
],
[
"Monerat",
"G. A.",
""
]
] | Quantization is performed of a Friedmann-Robertson-Walker universe filled with a conformally invariant scalar field and a perfect fluid with equation of state $p=\alpha \rho$. A well-known discrete set of static quantum wormholes is shown to exist for radiation ($\alpha =1/3$), and a novel continuous set is found for c... |
1212.1627 | Andronikos Paliathanasis | Andronikos Paliathanasis | Using Noether symmetries to specify f(R) gravity | 16 pages, no figures, Talk given at the 15th Conference on Recent
Developments in Gravity (NEB XV), 20-23 June 2012, Chania, Greece | J. Phys.: Conf. Ser. 453 (2013) 012009 | 10.1088/1742-6596/453/1/012009 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A detailed study of the modified gravity, f(R) models is performed, using
that the Noether point symmetries of these models are geometric symmetries of
the mini superspace of the theory. It is shown that the requirement that the
field equations admit Noether point symmetries selects definite models in a
self-consiste... | [
{
"created": "Fri, 7 Dec 2012 15:07:52 GMT",
"version": "v1"
}
] | 2015-01-05 | [
[
"Paliathanasis",
"Andronikos",
""
]
] | A detailed study of the modified gravity, f(R) models is performed, using that the Noether point symmetries of these models are geometric symmetries of the mini superspace of the theory. It is shown that the requirement that the field equations admit Noether point symmetries selects definite models in a self-consistent... |
2305.12611 | Jun-Jin Peng | Jun-Jin Peng, Yao Wang, Wei-Jie Guo | Conserved quantities for asymptotically AdS spacetimes in quadratic
curvature gravity in terms of a rank-4 tensor | 50 pages, no figures, accepted by PRD | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the conserved quantities associated to Killing isometries for
asymptotically AdS spacetimes within the framework of quadratic-curvature
gravity. By constructing a rank-4 tensor possessing the same index symmetries
as the ones of the Riemann tensor, we propose a 2-form potential resembling the
Noether o... | [
{
"created": "Mon, 22 May 2023 00:32:55 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Jun 2023 23:52:27 GMT",
"version": "v2"
},
{
"created": "Wed, 25 Oct 2023 02:56:08 GMT",
"version": "v3"
}
] | 2023-10-26 | [
[
"Peng",
"Jun-Jin",
""
],
[
"Wang",
"Yao",
""
],
[
"Guo",
"Wei-Jie",
""
]
] | We investigate the conserved quantities associated to Killing isometries for asymptotically AdS spacetimes within the framework of quadratic-curvature gravity. By constructing a rank-4 tensor possessing the same index symmetries as the ones of the Riemann tensor, we propose a 2-form potential resembling the Noether one... |
1801.04948 | Swagat Saurav Mishra | Swagat S. Mishra, Varun Sahni and Alexey V. Toporensky | Initial conditions for Inflation in an FRW Universe | 35 pages, 27 figures, matches the published version in PRD | Phys. Rev. D 98, 083538 (2018) | 10.1103/PhysRevD.98.083538 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the class of initial conditions which give rise to inflation. Our
analysis is carried out for several popular models including: Higgs inflation,
Starobinsky inflation, chaotic inflation, axion monodromy inflation and
non-canonical inflation. In each case we determine the set of initial
conditions which giv... | [
{
"created": "Mon, 15 Jan 2018 19:02:33 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Nov 2018 10:05:07 GMT",
"version": "v2"
}
] | 2018-11-07 | [
[
"Mishra",
"Swagat S.",
""
],
[
"Sahni",
"Varun",
""
],
[
"Toporensky",
"Alexey V.",
""
]
] | We examine the class of initial conditions which give rise to inflation. Our analysis is carried out for several popular models including: Higgs inflation, Starobinsky inflation, chaotic inflation, axion monodromy inflation and non-canonical inflation. In each case we determine the set of initial conditions which give ... |
gr-qc/9906110 | Jayashree Balakrishna | Jayashree Balakrishna | A Numerical Study of Boson Stars: Einstein Equations with a Matter
Source | 178 pages, 61 figures, Thesis submitted to Wahington Univ. St. Louis | null | null | Wugrav99-01T | gr-qc | null | The study of the properties and dynamics of self-gravitating bosonic objects
in Einstein gravity was conducted. We studied self-coupled boson stars and
determined the quasinormal mode (QNM) frequencies of stable boson stars in
spherical symmetry. The study was carried out in the standard Einstein theory
of General Re... | [
{
"created": "Mon, 28 Jun 1999 17:05:15 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Balakrishna",
"Jayashree",
""
]
] | The study of the properties and dynamics of self-gravitating bosonic objects in Einstein gravity was conducted. We studied self-coupled boson stars and determined the quasinormal mode (QNM) frequencies of stable boson stars in spherical symmetry. The study was carried out in the standard Einstein theory of General Rela... |
2402.08039 | Katelyn Wagner | Katelyn J. Wagner and Richard O'Shaughnessy | Parameter Estimation for Low-Mass Eccentric Black Hole Binaries | null | null | null | LIGO-P2400032 | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Recent studies have shown that orbital eccentricity may indicate dynamical
assembly as a formation mechanism for binary black holes. Eccentricity leaves a
distinct signature in gravitational wave signals and it may be measured if the
binary remains eccentric when it enters the LIGO band. Although eccentricity
has not... | [
{
"created": "Mon, 12 Feb 2024 20:13:37 GMT",
"version": "v1"
}
] | 2024-02-14 | [
[
"Wagner",
"Katelyn J.",
""
],
[
"O'Shaughnessy",
"Richard",
""
]
] | Recent studies have shown that orbital eccentricity may indicate dynamical assembly as a formation mechanism for binary black holes. Eccentricity leaves a distinct signature in gravitational wave signals and it may be measured if the binary remains eccentric when it enters the LIGO band. Although eccentricity has not y... |
gr-qc/9408015 | null | J. Gegenberg, G. Kunstatter and D. Louis-Martinez | Observables for Two-Dimensional Black Holes | 14 pages, latex | Phys. Rev. D 51, 1781 (1995) | 10.1103/PhysRevD.51.1781 | null | gr-qc | null | We consider the most general dilaton gravity theory in 1+1 dimensions. By
suitably parametrizing the metric and scalar field we find a simple expression
that relates the energy of a generic solution to the magnitude of the
corresponding Killing vector. In theories that admit black hole solutions, this
relationship le... | [
{
"created": "Thu, 11 Aug 1994 17:15:00 GMT",
"version": "v1"
}
] | 2016-08-24 | [
[
"Gegenberg",
"J.",
""
],
[
"Kunstatter",
"G.",
""
],
[
"Louis-Martinez",
"D.",
""
]
] | We consider the most general dilaton gravity theory in 1+1 dimensions. By suitably parametrizing the metric and scalar field we find a simple expression that relates the energy of a generic solution to the magnitude of the corresponding Killing vector. In theories that admit black hole solutions, this relationship lead... |
gr-qc/0004035 | C. L. B. Correia da Silva | Cristovao Correia da Silva, and Ruth M. Williams | Wormholes in Simplicial Minisuperspace | 33 pages and 15 figures. Submitted to Classical and Quantum Gravity | null | null | null | gr-qc | null | Using simplicial minisuperspace techniques we obtain a wormhole
configuration, capable of modelling both a throat between two equal Euclidean
and Lorentzian universes. Computing the wavefunction associated to such
configuration we conclude that for Planck-size Euclidean wormholes there is a
prediction of a finite non... | [
{
"created": "Wed, 12 Apr 2000 16:23:14 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"da Silva",
"Cristovao Correia",
""
],
[
"Williams",
"Ruth M.",
""
]
] | Using simplicial minisuperspace techniques we obtain a wormhole configuration, capable of modelling both a throat between two equal Euclidean and Lorentzian universes. Computing the wavefunction associated to such configuration we conclude that for Planck-size Euclidean wormholes there is a prediction of a finite non-v... |
0707.4327 | Tania Regimbau | T. Regimbau and B. Chauvineau | Stochastic background from extra-galactic double neutron stars | 13 pages, 7 figures - proceeding of a talk given at the 11th GWDAW,
to appear in CQG | Class.Quant.Grav.24:S627-S638,2007 | 10.1088/0264-9381/24/19/S25 | null | gr-qc astro-ph | null | We present Monte Carlo simulations of the extra galactic population of
inspiralling double neutron stars, and estimate its contribution to the
astrophysical gravitational wave background, in the frequency range of ground
based interferometers, corresponding to the last thousand seconds before the
last stable orbit wh... | [
{
"created": "Mon, 30 Jul 2007 01:09:39 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Regimbau",
"T.",
""
],
[
"Chauvineau",
"B.",
""
]
] | We present Monte Carlo simulations of the extra galactic population of inspiralling double neutron stars, and estimate its contribution to the astrophysical gravitational wave background, in the frequency range of ground based interferometers, corresponding to the last thousand seconds before the last stable orbit when... |
1101.4997 | Kent Yagi | Kent Yagi, Norihiro Tanahashi and Takahiro Tanaka | Probing the size of extra dimension with gravitational wave astronomy | 19 pages, 10 figures. Published in PRD, typos corrected, references
and footnotes added | Phys.Rev.D83:084036,2011 | 10.1103/PhysRevD.83.084036 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Randall-Sundrum II (RS-II) braneworld model, it has been conjectured
according to the AdS/CFT correspondence that brane-localized black hole (BH)
larger than the bulk AdS curvature scale $\ell$ cannot be static, and it is
dual to a four dimensional BH emitting the Hawking radiation through some
quantum fields. In ... | [
{
"created": "Wed, 26 Jan 2011 07:30:22 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Dec 2011 01:52:56 GMT",
"version": "v2"
}
] | 2011-12-30 | [
[
"Yagi",
"Kent",
""
],
[
"Tanahashi",
"Norihiro",
""
],
[
"Tanaka",
"Takahiro",
""
]
] | In Randall-Sundrum II (RS-II) braneworld model, it has been conjectured according to the AdS/CFT correspondence that brane-localized black hole (BH) larger than the bulk AdS curvature scale $\ell$ cannot be static, and it is dual to a four dimensional BH emitting the Hawking radiation through some quantum fields. In th... |
1610.05454 | Zhaoyi Xu | Zhaoyi Xu, Xian Hou, Jiancheng Wang and Yi Liao | Perfect fluid dark matter influence on thermodynamics and phase
transition for a Reissner-Nordstrom-anti-de Sitter black hole | 12 pages, 0 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on Reissner-Nordstrom-anti-de Sitter(RN-AdS) black hole surrounded by
perfect fluid dark matter, we study the thermodynamics and phase transition by
extending the phase space defined by the charge square $Q^{2}$ and the
conjugate quantity $\psi$, where $\psi$ is a function of horizon radius. The
first law of th... | [
{
"created": "Tue, 18 Oct 2016 07:00:28 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Nov 2017 07:10:39 GMT",
"version": "v2"
},
{
"created": "Fri, 15 Jun 2018 02:01:08 GMT",
"version": "v3"
}
] | 2018-06-18 | [
[
"Xu",
"Zhaoyi",
""
],
[
"Hou",
"Xian",
""
],
[
"Wang",
"Jiancheng",
""
],
[
"Liao",
"Yi",
""
]
] | Based on Reissner-Nordstrom-anti-de Sitter(RN-AdS) black hole surrounded by perfect fluid dark matter, we study the thermodynamics and phase transition by extending the phase space defined by the charge square $Q^{2}$ and the conjugate quantity $\psi$, where $\psi$ is a function of horizon radius. The first law of ther... |
1209.6029 | Bijan Saha Dr. | Bijan Saha | Bianchi type-VI anisotropic dark energy model with varying EoS parameter | 11 pages, 7 figures | Int. J. Theor. Phys., 52 (2013) 3646 - 3657 | 10.1007/s10773-013-1670-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within the scope of an anisotropic Bianchi type-VI cosmological model we have
studied the evolution of the universe filled with perfect fluid and dark
energy. To get the deterministic model of Universe, we assume that the shear
scalar $(\sigma)$ in the model is proportional to expansion scalar
$(\vartheta)$. This ass... | [
{
"created": "Wed, 26 Sep 2012 18:51:43 GMT",
"version": "v1"
}
] | 2015-05-01 | [
[
"Saha",
"Bijan",
""
]
] | Within the scope of an anisotropic Bianchi type-VI cosmological model we have studied the evolution of the universe filled with perfect fluid and dark energy. To get the deterministic model of Universe, we assume that the shear scalar $(\sigma)$ in the model is proportional to expansion scalar $(\vartheta)$. This assum... |
1807.02163 | Diego S\'aez-Chill\'on G\'omez | Sergei D. Odintsov, Diego Saez-Chillon Gomez and German S. Sharov | Testing logarithmic corrections on $R^2$-exponential gravity by
observational data | 18 pages, 4 figures, analysis extended, version accepted for
publication in PRD | Phys. Rev. D 99, 024003 (2019) | 10.1103/PhysRevD.99.024003 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is devoted to the analysis of a class of $F(R)$ gravity, where
additional logarithmic corrections are assumed. The gravitational action
includes an exponential term and a $R^2$ inflationary term, both with
logarithmic corrections. This model can unify an early time inflationary era
and also the late time a... | [
{
"created": "Thu, 5 Jul 2018 19:39:38 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Dec 2018 11:43:11 GMT",
"version": "v2"
}
] | 2019-01-09 | [
[
"Odintsov",
"Sergei D.",
""
],
[
"Gomez",
"Diego Saez-Chillon",
""
],
[
"Sharov",
"German S.",
""
]
] | This paper is devoted to the analysis of a class of $F(R)$ gravity, where additional logarithmic corrections are assumed. The gravitational action includes an exponential term and a $R^2$ inflationary term, both with logarithmic corrections. This model can unify an early time inflationary era and also the late time acc... |
1310.6915 | S. I. Kruglov | S. I. Kruglov | Modified arctan-gravity model mimicking a cosmological constant | 8 pages, 8 figures, minor corrections, journal version | Phys. Rev. D 89, 064004 (2014) | 10.1103/PhysRevD.89.064004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A novel theory of $F(R)$ gravity with the Lagrangian density ${\cal
L}=[R-(b/\beta)\arctan\left(\beta R\right)]/(2\kappa^2)$ is analyzed. Constant
curvature solutions of the model are found, and the potential of the scalar
field and the mass of a scalar degree of freedom in Einstein's frame are
derived. The cosmologi... | [
{
"created": "Thu, 24 Oct 2013 17:57:31 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Jan 2014 21:29:09 GMT",
"version": "v2"
},
{
"created": "Thu, 6 Mar 2014 16:22:01 GMT",
"version": "v3"
}
] | 2014-03-07 | [
[
"Kruglov",
"S. I.",
""
]
] | A novel theory of $F(R)$ gravity with the Lagrangian density ${\cal L}=[R-(b/\beta)\arctan\left(\beta R\right)]/(2\kappa^2)$ is analyzed. Constant curvature solutions of the model are found, and the potential of the scalar field and the mass of a scalar degree of freedom in Einstein's frame are derived. The cosmologica... |
1109.4927 | Frank C Eckert | Bianca Dittrich, Frank C. Eckert, Mercedes Martin-Benito | Coarse graining methods for spin net and spin foam models | 39 pages, 13 figures, 1 table | New J. Phys. 14 (2012) 035008 | 10.1088/1367-2630/14/3/035008 | null | gr-qc cond-mat.str-el hep-lat quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We undertake first steps in making a class of discrete models of quantum
gravity, spin foams, accessible to a large scale analysis by numerical and
computational methods. In particular, we apply Migdal-Kadanoff and Tensor
Network Renormalization schemes to spin net and spin foam models based on
finite Abelian groups ... | [
{
"created": "Thu, 22 Sep 2011 19:44:50 GMT",
"version": "v1"
}
] | 2015-10-19 | [
[
"Dittrich",
"Bianca",
""
],
[
"Eckert",
"Frank C.",
""
],
[
"Martin-Benito",
"Mercedes",
""
]
] | We undertake first steps in making a class of discrete models of quantum gravity, spin foams, accessible to a large scale analysis by numerical and computational methods. In particular, we apply Migdal-Kadanoff and Tensor Network Renormalization schemes to spin net and spin foam models based on finite Abelian groups an... |
1109.2779 | Jorge Paramos | O. Bertolami, F. Francisco, P. J. S. Gil, J. P\'aramos | Probing the Flyby Anomaly with the Galileo Constellation | 5 pages, 1 figure, 4 tables. To appear in the Proceedings of the "3rd
International Colloquium - Scientific and Fundamental Aspects of the Galileo
Programme", 31 August - 2 September 2011, Copenhagen, Denmark | null | null | null | gr-qc physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the last few years, the so-called flyby anomaly has been widely discussed,
but remains still an illusive topic. This is due to the harsh conditions
experienced during an Earth flyby as well as due to the limited data available.
In this work, we assess the possibility of confirming and characterizing this
anomaly b... | [
{
"created": "Tue, 13 Sep 2011 13:21:46 GMT",
"version": "v1"
}
] | 2011-09-14 | [
[
"Bertolami",
"O.",
""
],
[
"Francisco",
"F.",
""
],
[
"Gil",
"P. J. S.",
""
],
[
"Páramos",
"J.",
""
]
] | In the last few years, the so-called flyby anomaly has been widely discussed, but remains still an illusive topic. This is due to the harsh conditions experienced during an Earth flyby as well as due to the limited data available. In this work, we assess the possibility of confirming and characterizing this anomaly by ... |
2001.11736 | Alessandro Nagar | Danilo Chiaramello and Alessandro Nagar | A faithful analytical effective one body waveform model for
spin-aligned, moderately eccentric, coalescing black hole binaries | 6 pages, 5 figures. This version (v5) matches published version | null | 10.1103/PhysRevD.101.101501 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new effective-one-body (EOB) model for eccentric binary
coalescences. The model stems from the state-of-the-art model TEOBResumS$\_$SM
for circularized coalescing black-hole binaries, that is modified to explicitly
incorporate eccentricity effects both in the radiation reaction and in the
waveform. Using... | [
{
"created": "Fri, 31 Jan 2020 09:41:14 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Feb 2020 12:01:22 GMT",
"version": "v2"
},
{
"created": "Wed, 26 Feb 2020 09:41:43 GMT",
"version": "v3"
},
{
"created": "Mon, 16 Mar 2020 13:29:26 GMT",
"version": "v4"
},
{
"c... | 2020-10-29 | [
[
"Chiaramello",
"Danilo",
""
],
[
"Nagar",
"Alessandro",
""
]
] | We present a new effective-one-body (EOB) model for eccentric binary coalescences. The model stems from the state-of-the-art model TEOBResumS$\_$SM for circularized coalescing black-hole binaries, that is modified to explicitly incorporate eccentricity effects both in the radiation reaction and in the waveform. Using R... |
2212.10419 | Genly Le\'on | Genly Leon (Catolica del Norte U. and DUT, Durban), Saikat Chakraborty
(Naresuan U. and North West State Tech. U.), Sayantan Ghosh (Birla Inst.
Tech. Sci.), Raja Solanki (Birla Inst. Tech. Sci.), P.K. Sahoo (Birla Inst.
Tech. Sci.), Esteban Gonz\'alez (Chile U., Santiago) | Scalar field evolution at background and perturbation levels for a broad
class of potentials | 79 pages, 16 compound figures. Major revision. Discussion improved.
References added | Fortschr. Phys. 2023, 2300006 | 10.1002/prop.202300006 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate a non-interacting scalar field cosmology with
an arbitrary potential using the $f$-deviser method that relies on the
differentiability properties of the potential. Using this alternative
mathematical approach, we present a unified dynamical system analysis at a
scalar field's background ... | [
{
"created": "Tue, 20 Dec 2022 16:54:49 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Dec 2022 00:01:40 GMT",
"version": "v2"
},
{
"created": "Thu, 18 May 2023 21:52:46 GMT",
"version": "v3"
}
] | 2023-10-10 | [
[
"Leon",
"Genly",
"",
"Catolica del Norte U. and DUT, Durban"
],
[
"Chakraborty",
"Saikat",
"",
"Naresuan U. and North West State Tech. U."
],
[
"Ghosh",
"Sayantan",
"",
"Birla Inst.\n Tech. Sci."
],
[
"Solanki",
"Raja",
"",
"Birla Inst. ... | In this paper, we investigate a non-interacting scalar field cosmology with an arbitrary potential using the $f$-deviser method that relies on the differentiability properties of the potential. Using this alternative mathematical approach, we present a unified dynamical system analysis at a scalar field's background an... |
2210.01828 | Swagat Saurav Mishra | Yuri Shtanov, Varun Sahni, Swagat S. Mishra | Tabletop potentials for inflation from $f(R)$ gravity | 35 pages, 11 figures, revised version, some clarifications and
additional references, matches published version in JCAP | null | 10.1088/1475-7516/2023/03/023 | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We show that a large class of modified gravity theories (MOG) with the
Jordan-frame Lagrangian $f(R)$ translate into scalar-field (scalaron) models
with hilltop potentials in the Einstein frame. (A rare exception to this rule
is provided by the Starobinsky model for which the corresponding scalaron
potential is plate... | [
{
"created": "Tue, 4 Oct 2022 18:01:02 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Oct 2022 13:25:19 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Apr 2023 11:40:30 GMT",
"version": "v3"
}
] | 2023-04-05 | [
[
"Shtanov",
"Yuri",
""
],
[
"Sahni",
"Varun",
""
],
[
"Mishra",
"Swagat S.",
""
]
] | We show that a large class of modified gravity theories (MOG) with the Jordan-frame Lagrangian $f(R)$ translate into scalar-field (scalaron) models with hilltop potentials in the Einstein frame. (A rare exception to this rule is provided by the Starobinsky model for which the corresponding scalaron potential is plateau... |
2004.13519 | Sushant Ghosh Prof | Sushant G. Ghosh and Sunil D. Maharaj | Noncommutative inspired black holes in regularised 4D
Einstein-Gauss-Bonnet theory | 10 pages, 4 figures, minor changes, Accepted in Phys. Dark Univ | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Low energy limits of string theory indicated that the standard gravity action
should be modified to include higher-order curvature terms, in the form of
dimensionally continued Gauss-Bonnet densities. If one includes only quadratic
curvature terms then the resulting theory is Einstein-Gauss-Bonnet (EGB)
gravity valid... | [
{
"created": "Tue, 28 Apr 2020 14:16:50 GMT",
"version": "v1"
},
{
"created": "Fri, 1 May 2020 18:25:56 GMT",
"version": "v2"
},
{
"created": "Wed, 17 Feb 2021 11:06:07 GMT",
"version": "v3"
}
] | 2021-02-18 | [
[
"Ghosh",
"Sushant G.",
""
],
[
"Maharaj",
"Sunil D.",
""
]
] | Low energy limits of string theory indicated that the standard gravity action should be modified to include higher-order curvature terms, in the form of dimensionally continued Gauss-Bonnet densities. If one includes only quadratic curvature terms then the resulting theory is Einstein-Gauss-Bonnet (EGB) gravity valid o... |
2102.12487 | Alexander C. Jenkins | Alexander C. Jenkins and Mairi Sakellariadou | Nonlinear gravitational-wave memory from cusps and kinks on cosmic
strings | 29 pages, 9 figures, version published in CQG | Class. Quantum Grav. 38 (2021) 165004 | 10.1088/1361-6382/ac1084 | KCL-PH-TH/2021-04, CERN-TH-2021-016 | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nonlinear memory effect is a fascinating prediction of general relativity
(GR), in which oscillatory gravitational-wave (GW) signals are generically
accompanied by a monotonically-increasing strain which persists in the detector
long after the signal has passed. This effect presents a unique opportunity to
test G... | [
{
"created": "Wed, 24 Feb 2021 19:00:01 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Jul 2021 17:49:54 GMT",
"version": "v2"
}
] | 2021-07-23 | [
[
"Jenkins",
"Alexander C.",
""
],
[
"Sakellariadou",
"Mairi",
""
]
] | The nonlinear memory effect is a fascinating prediction of general relativity (GR), in which oscillatory gravitational-wave (GW) signals are generically accompanied by a monotonically-increasing strain which persists in the detector long after the signal has passed. This effect presents a unique opportunity to test GR ... |
1010.4526 | Mauro Cambiaso | Mauro Cambiaso and Luis F. Urrutia | An extended solution space for Chern-Simons gravity: the slowly rotating
Kerr black hole | 5 pages, PRD accepted | Phys.Rev.D82:101502,2010 | 10.1103/PhysRevD.82.101502 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the Einstein-Cartan formulation, an iterative procedure to find solutions
in non-dynamical Chern-Simons (CS) gravity in vacuum is proposed. The
iterations, in powers of a small parameter $\beta$ which codifies the CS
coupling, start from an arbitrary torsionless solution of Einstein equations.
With Schwarzschild a... | [
{
"created": "Thu, 21 Oct 2010 17:21:32 GMT",
"version": "v1"
}
] | 2010-12-21 | [
[
"Cambiaso",
"Mauro",
""
],
[
"Urrutia",
"Luis F.",
""
]
] | In the Einstein-Cartan formulation, an iterative procedure to find solutions in non-dynamical Chern-Simons (CS) gravity in vacuum is proposed. The iterations, in powers of a small parameter $\beta$ which codifies the CS coupling, start from an arbitrary torsionless solution of Einstein equations. With Schwarzschild as ... |
1301.2674 | Lars Andersson | Steffen Aksteiner, Lars Andersson | Charges for linearized gravity | 19 pages. v3: Added comments and references | null | 10.1088/0264-9381/30/15/155016 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Maxwell test fields as well as solutions of linearized gravity on the Kerr
exterior admit non-radiating modes, i.e. non-trivial time-independent
solutions. These are closely related to conserved charges. In this paper we
discuss the non-radiating modes for linearized gravity, which may be seen to
correspond to the Po... | [
{
"created": "Sat, 12 Jan 2013 10:57:15 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Jan 2013 21:44:49 GMT",
"version": "v2"
},
{
"created": "Mon, 4 Feb 2013 16:49:31 GMT",
"version": "v3"
}
] | 2015-06-12 | [
[
"Aksteiner",
"Steffen",
""
],
[
"Andersson",
"Lars",
""
]
] | Maxwell test fields as well as solutions of linearized gravity on the Kerr exterior admit non-radiating modes, i.e. non-trivial time-independent solutions. These are closely related to conserved charges. In this paper we discuss the non-radiating modes for linearized gravity, which may be seen to correspond to the Poin... |
1811.04445 | Mahmood Roshan | Sara Jamali and Mahmood Roshan and Luca Amendola | Linear cosmological perturbations in Scalar-tensor-vector gravity | 7 pages, accepted version | Physics Letters B, Volume 802, 2020, 135238 | 10.1016/j.physletb.2020.135238 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the cosmological perturbations in the context of a
Scalar-Tensor-Vector theory of Gravity known as MOG in the literature. Recent
investigations show that MOG reproduces a viable background cosmological
evolution comparable to $\Lambda$CDM. However, the matter-dominated era is
slightly different. In thi... | [
{
"created": "Sun, 11 Nov 2018 18:43:29 GMT",
"version": "v1"
},
{
"created": "Thu, 16 May 2019 06:32:34 GMT",
"version": "v2"
},
{
"created": "Sat, 15 Feb 2020 16:49:09 GMT",
"version": "v3"
}
] | 2020-02-18 | [
[
"Jamali",
"Sara",
""
],
[
"Roshan",
"Mahmood",
""
],
[
"Amendola",
"Luca",
""
]
] | We investigate the cosmological perturbations in the context of a Scalar-Tensor-Vector theory of Gravity known as MOG in the literature. Recent investigations show that MOG reproduces a viable background cosmological evolution comparable to $\Lambda$CDM. However, the matter-dominated era is slightly different. In this ... |
1603.02854 | Chopin Soo | Chopin Soo | Quantum geometrodynamics with intrinsic time development | 6 pages; Plenary talk, 2nd LeCosPA Symposium (Everything About
Gravity) Taipei, Dec. 17th. 2015, contribution to the Proceedings | Int. J. Mod. Phys. D, 25 (2016) 1645008 (10pp) | 10.1142/S0218271816450085 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum geometrodynamics with intrinsic time development is presented.
Paradigm shift from full space-time covariance to spatial diffeomorphism
invariance yields a non-vanishing Hamiltonian, a resolution of the `problem of
time', and gauge-invariant temporal ordering in an ever expanding universe.
Einstein's general ... | [
{
"created": "Wed, 9 Mar 2016 11:34:14 GMT",
"version": "v1"
}
] | 2016-12-16 | [
[
"Soo",
"Chopin",
""
]
] | Quantum geometrodynamics with intrinsic time development is presented. Paradigm shift from full space-time covariance to spatial diffeomorphism invariance yields a non-vanishing Hamiltonian, a resolution of the `problem of time', and gauge-invariant temporal ordering in an ever expanding universe. Einstein's general re... |
gr-qc/0108014 | Robert J. Low | Steven G. Harris, Robert J. low | Causal monotonicity, omniscient foliations and the shape of space | 19 pages, AMSTeX | Class.Quant.Grav. 18 (2001) 27-43 | 10.1088/0264-9381/18/1/303 | null | gr-qc | null | What is the shape of space in a spacetime? One way of addressing this issue
is to consider edgeless spacelike submanifolds of the spacetime. An alternative
is to foliate the spacetime by timelike curves and consider the quotient
obtained by identifying points on the same timelike curve. In this article we
investigate... | [
{
"created": "Fri, 3 Aug 2001 19:47:40 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Harris",
"Steven G.",
""
],
[
"low",
"Robert J.",
""
]
] | What is the shape of space in a spacetime? One way of addressing this issue is to consider edgeless spacelike submanifolds of the spacetime. An alternative is to foliate the spacetime by timelike curves and consider the quotient obtained by identifying points on the same timelike curve. In this article we investigate e... |
2103.06895 | Aron Kovacs | Aron D Kovacs | On the construction of asymptotically flat initial data in scalar-tensor
effective field theory | 33 pages | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the constraint equations for a class of scalar-tensor effective
field theories of gravity, including the operators up to $4$ derivatives in the
action ($4\partial$ST). We extend the conformal transverse traceless and
conformal thin sandwich methods of General Relativity to rewrite the constraint
equations of... | [
{
"created": "Thu, 11 Mar 2021 19:00:02 GMT",
"version": "v1"
}
] | 2021-03-15 | [
[
"Kovacs",
"Aron D",
""
]
] | We study the constraint equations for a class of scalar-tensor effective field theories of gravity, including the operators up to $4$ derivatives in the action ($4\partial$ST). We extend the conformal transverse traceless and conformal thin sandwich methods of General Relativity to rewrite the constraint equations of t... |
2210.03750 | Sebastian Murk | Sebastian Murk | Nomen non est omen: Why it is too soon to identify ultra-compact objects
as black holes | 5 pages, 1 figure. Published version. Selected Honorable Mention in
the 2023 Gravity Research Foundation Essay Competition. Comments welcome! | Int. J. Mod. Phys. D 32, 2342012 (2023) | 10.1142/S0218271823420129 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black holes play a pivotal role in the foundations of physics, but there is
an alarming discrepancy between what is considered to be a black hole in
observational astronomy and theoretical studies. Despite claims to the
contrary, we argue that identifying the observed astrophysical black hole
candidates as genuine bl... | [
{
"created": "Fri, 7 Oct 2022 18:00:00 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Feb 2023 13:15:56 GMT",
"version": "v2"
},
{
"created": "Tue, 23 May 2023 14:14:01 GMT",
"version": "v3"
},
{
"created": "Thu, 14 Dec 2023 06:06:05 GMT",
"version": "v4"
}
] | 2023-12-15 | [
[
"Murk",
"Sebastian",
""
]
] | Black holes play a pivotal role in the foundations of physics, but there is an alarming discrepancy between what is considered to be a black hole in observational astronomy and theoretical studies. Despite claims to the contrary, we argue that identifying the observed astrophysical black hole candidates as genuine blac... |
gr-qc/9701048 | Romeo Brunetti | R. Brunetti and K. Fredenhagen | Interacting Quantum Fields in Curved Space: Renormalizability of
$\varphi^4$ | AMSTeX, 18 pages, to be published on the proceedings of the
conference `Operator Algebras and Quantum Field Theory` held at Accademia
Nazionale dei Lincei, Rome, Italy, July 1996 | null | null | Desy 97-005 | gr-qc funct-an hep-th math.FA | null | We present a perturbative construction of the $\varphi^4$ model on a smooth
globally hyperbolic space-time. Our method relies on a adaptation of the
Epstein and Glaser method of renormalization to curved space-times using
techniques from microlocal analysis.
| [
{
"created": "Tue, 21 Jan 1997 14:42:46 GMT",
"version": "v1"
}
] | 2008-02-03 | [
[
"Brunetti",
"R.",
""
],
[
"Fredenhagen",
"K.",
""
]
] | We present a perturbative construction of the $\varphi^4$ model on a smooth globally hyperbolic space-time. Our method relies on a adaptation of the Epstein and Glaser method of renormalization to curved space-times using techniques from microlocal analysis. |
1306.2601 | Arash Ranjbar | Amir Hadi Ziaie, Arash Ranjbar and Hamid Reza Sepangi | Trapped surfaces and nature of singularities in Lyra's geometry | 23 pages, 5 figures, title changed, major revision, version appeared
in CQG | Class. Quantum Grav. 32 025010, 2015 | 10.1088/0264-9381/32/2/025010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the geometrical interpretation of Brans-Dicke (BD) scalar field
which may also act as a torsion potential in Lyra geometry, we study the
effects of spacetime torsion on the dynamics of a collapsing massive star.
Taking the interior spacetime as the FLRW metric and the matter content as
spherically symmet... | [
{
"created": "Tue, 11 Jun 2013 18:13:33 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Jan 2015 16:17:23 GMT",
"version": "v2"
}
] | 2015-01-13 | [
[
"Ziaie",
"Amir Hadi",
""
],
[
"Ranjbar",
"Arash",
""
],
[
"Sepangi",
"Hamid Reza",
""
]
] | Motivated by the geometrical interpretation of Brans-Dicke (BD) scalar field which may also act as a torsion potential in Lyra geometry, we study the effects of spacetime torsion on the dynamics of a collapsing massive star. Taking the interior spacetime as the FLRW metric and the matter content as spherically symmetri... |
gr-qc/9704016 | Victor Revoltovich Krym | Victor Revoltovich Krym | Causal Structures in Linear Spaces | 13 pages, PostScript, generated by Word 7.0 (300 dpi) | Zap.Nauchn.Semin. 246 (1997) 152 | null | null | gr-qc | null | Linear topological spaces with partial ordering (linear kinematics) are
studied. They are defined by a set of 8 axioms implying that topology, linear
structure and ordering are compatible with each other. Most of the results are
valid for both the finite-dimensional and infinite-dimensional case. In
applications to p... | [
{
"created": "Mon, 7 Apr 1997 12:40:52 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Krym",
"Victor Revoltovich",
""
]
] | Linear topological spaces with partial ordering (linear kinematics) are studied. They are defined by a set of 8 axioms implying that topology, linear structure and ordering are compatible with each other. Most of the results are valid for both the finite-dimensional and infinite-dimensional case. In applications to phy... |
1401.2549 | Robert Lompay | Robert R. Lompay | On the Energy-Momentum and Spin Tensors in the Riemann-Cartan Space | RevTeX 4.1, 16 pages, 0 figures | Gen. Relativ. Gravit. 46, 1692 (2014) | 10.1007/s10714-014-1692-4 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General classical theories of material fields in an arbitrary Riemann-Cartan
space are considered. For these theories, with the help of equations of
balance, new non-trivially generalized, manifestly generally covariant
expressions for canonical energy-momentum and spin tensors are constructed in
the cases when a Lag... | [
{
"created": "Sat, 11 Jan 2014 17:36:47 GMT",
"version": "v1"
}
] | 2014-03-10 | [
[
"Lompay",
"Robert R.",
""
]
] | General classical theories of material fields in an arbitrary Riemann-Cartan space are considered. For these theories, with the help of equations of balance, new non-trivially generalized, manifestly generally covariant expressions for canonical energy-momentum and spin tensors are constructed in the cases when a Lagra... |
gr-qc/0401001 | Stephen R. Lau | Stephen R. Lau (Applied Math, UNC-Chapel Hill) | Rapid Evaluation of Radiation Boundary Kernels for Time-domain Wave
Propagation on Blackholes | AMS article, 105 pages, 45 figures. Version 3 has more minor
corrections as well as extra commentary added in response to reactions by
referees. Commentary added which compares and contrasts this work with work
of Leaver and work of Andersson. For publication, article has been cut in two
and appears as two sepa... | J.Comput.Phys. 199 (2004) 376-422 | 10.1016/j.jcp.2004.05.013 | null | gr-qc | null | For scalar, electromagnetic, or gravitational wave propagation on a fixed
Schwarzschild blackhole background, we describe the exact nonlocal radiation
outer boundary conditions (ROBC) appropriate for a spherical outer boundary of
finite radius enclosing the blackhole. Derivation of the ROBC is based on
Laplace and sp... | [
{
"created": "Sun, 4 Jan 2004 20:47:03 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Jan 2004 20:18:40 GMT",
"version": "v2"
},
{
"created": "Mon, 4 Oct 2004 21:35:52 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Lau",
"Stephen R.",
"",
"Applied Math, UNC-Chapel Hill"
]
] | For scalar, electromagnetic, or gravitational wave propagation on a fixed Schwarzschild blackhole background, we describe the exact nonlocal radiation outer boundary conditions (ROBC) appropriate for a spherical outer boundary of finite radius enclosing the blackhole. Derivation of the ROBC is based on Laplace and sphe... |
0805.4320 | J\"org Hennig | J\"org Hennig, Marcus Ansorg and Carla Cederbaum | A universal inequality between angular momentum and horizon area for
axisymmetric and stationary black holes with surrounding matter | 8 pages | Class.Quant.Grav.25:162002,2008 | 10.1088/0264-9381/25/16/162002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that for sub-extremal axisymmetric and stationary black holes with
arbitrary surrounding matter the inequality $8\pi|J|<A$ holds, where $J$ is the
angular momentum and $A$ the horizon area of the black hole.
| [
{
"created": "Wed, 28 May 2008 11:58:37 GMT",
"version": "v1"
}
] | 2010-11-09 | [
[
"Hennig",
"Jörg",
""
],
[
"Ansorg",
"Marcus",
""
],
[
"Cederbaum",
"Carla",
""
]
] | We prove that for sub-extremal axisymmetric and stationary black holes with arbitrary surrounding matter the inequality $8\pi|J|<A$ holds, where $J$ is the angular momentum and $A$ the horizon area of the black hole. |
2206.01147 | Christyan C. de Oliveira | Christyan C. de Oliveira and Ricardo A. Mosna | Analog model for the BTZ black hole | 7 pages, 3 figures | Phys. Rev. D 106, 064030 (2022) | 10.1103/PhysRevD.106.064030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an analog model for the Ba\~nados, Teitelboim, Zanelli (BTZ) black
hole based on a hydrodynamical flow. We numerically solve the fully nonlinear
hydrodynamic equations of motion and observe the excitation and decay of the
analog BTZ quasinormal modes in the process. We consider both a small
perturbation in... | [
{
"created": "Thu, 2 Jun 2022 16:57:54 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Sep 2022 15:25:04 GMT",
"version": "v2"
}
] | 2022-09-19 | [
[
"de Oliveira",
"Christyan C.",
""
],
[
"Mosna",
"Ricardo A.",
""
]
] | We present an analog model for the Ba\~nados, Teitelboim, Zanelli (BTZ) black hole based on a hydrodynamical flow. We numerically solve the fully nonlinear hydrodynamic equations of motion and observe the excitation and decay of the analog BTZ quasinormal modes in the process. We consider both a small perturbation in t... |
gr-qc/0305109 | Zhang Chengmin | C.M. Zhang | Axial Torsion-Dirac spin Effect in Rotating Frame with Relativistic
Factor | 6 pages | Gen.Rel.Grav. 35 (2003) 1465-1470 | 10.1023/A:1024538803075 | null | gr-qc | null | In the framework of spacetime with torsion and without curvature, the Dirac
particle spin precession in the rotational system is studied. We write out the
equivalent tetrad of rotating frame, in the polar coordinate system, through
considering the relativistic factor, and the resultant equivalent metric is a
flat Min... | [
{
"created": "Fri, 30 May 2003 04:53:29 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Zhang",
"C. M.",
""
]
] | In the framework of spacetime with torsion and without curvature, the Dirac particle spin precession in the rotational system is studied. We write out the equivalent tetrad of rotating frame, in the polar coordinate system, through considering the relativistic factor, and the resultant equivalent metric is a flat Minko... |
1610.01545 | Plyatsko Roman | Roman Plyatsko and Mykola Fenyk | Antigravity: Spin-gravity coupling in action | 8 pages, 9 figures; version matching publication in PRD | Phys. Rev. D, v.94, 044047 (2016) | 10.1103/PhysRevD.94.044047 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The typical motions of a spinning test particle in Schwarzschild's background
which show the strong repulsive action of the highly relativistic spin-gravity
coupling are considered using the exact Mathisson-Papapetrou equations. An
approximated approach to choice solutions of these equations which describe
motions of... | [
{
"created": "Wed, 5 Oct 2016 17:52:41 GMT",
"version": "v1"
},
{
"created": "Sun, 9 Oct 2016 17:05:50 GMT",
"version": "v2"
}
] | 2016-10-12 | [
[
"Plyatsko",
"Roman",
""
],
[
"Fenyk",
"Mykola",
""
]
] | The typical motions of a spinning test particle in Schwarzschild's background which show the strong repulsive action of the highly relativistic spin-gravity coupling are considered using the exact Mathisson-Papapetrou equations. An approximated approach to choice solutions of these equations which describe motions of t... |
gr-qc/0205112 | Sergio De Filippo | Sergio De Filippo | Non-unitary HD gravity classically equivalent to Einstein gravity | null | null | null | null | gr-qc | null | Runaway solutions can be avoided in fourth order gravity by a doubling of the
matter operator algebra with a symmetry constraint with respect to the exchange
of observable and hidden degrees of freedom together with the change in sign of
the ghost and the dilaton fields. The theory is classically equivalent to
Einste... | [
{
"created": "Mon, 27 May 2002 17:23:10 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"De Filippo",
"Sergio",
""
]
] | Runaway solutions can be avoided in fourth order gravity by a doubling of the matter operator algebra with a symmetry constraint with respect to the exchange of observable and hidden degrees of freedom together with the change in sign of the ghost and the dilaton fields. The theory is classically equivalent to Einstein... |
1106.1198 | Clifford M. Will | Clifford M. Will | Finally, results from Gravity Probe-B | A Viewpoint article, published in Physics 4, 43 (2011), available at
http://physics.aps.org/articles/v4/43 Submitted to the arXiv by permission of
the American Physical Society | Physics 4, 43 (2011) | 10.1103/Physics.4.43 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Nearly fifty years after its inception, the Gravity Probe B satellite mission
delivers the first measurements of how a spinning gyroscope precesses in the
gravitational warping of spacetime.
| [
{
"created": "Mon, 6 Jun 2011 21:03:31 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Will",
"Clifford M.",
""
]
] | Nearly fifty years after its inception, the Gravity Probe B satellite mission delivers the first measurements of how a spinning gyroscope precesses in the gravitational warping of spacetime. |
1709.00227 | Kimet Jusufi | Kimet Jusufi, Farook Rahaman, Ayan Banerjee | Semiclassical gravitational effects on the gravitational lensing in the
spacetime of topological defects | Accepted for publication in Annals of Physics | Ann. Phys. 389, 219 (2018) | 10.1016/j.aop.2017.12.013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The theory of gravitational lensing has revealed many generic and fundamental
properties of compact objects like black holes and wormholes. In this article,
we utilize a recent formulation to compute the quantum effects on the
deflection angle of a light ray, namely, the Gauss-Bonnet theorem (GBT) to
explore the semi... | [
{
"created": "Fri, 1 Sep 2017 10:02:01 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Dec 2017 15:26:35 GMT",
"version": "v2"
}
] | 2018-01-11 | [
[
"Jusufi",
"Kimet",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Banerjee",
"Ayan",
""
]
] | The theory of gravitational lensing has revealed many generic and fundamental properties of compact objects like black holes and wormholes. In this article, we utilize a recent formulation to compute the quantum effects on the deflection angle of a light ray, namely, the Gauss-Bonnet theorem (GBT) to explore the semicl... |
gr-qc/0612101 | Jerzy Lewandowski | Lukasz Szulc, Wojciech Kaminski, Jerzy Lewandowski | Closed FRW model in Loop Quantum Cosmology | 19 pages, latex, no figures, high quality, neat | Class.Quant.Grav.24:2621-2636,2007 | 10.1088/0264-9381/24/10/008 | null | gr-qc hep-th | null | The basic idea of the LQC applies to every spatially homogeneous cosmological
model, however only the spatially flat (so called $k=0$) case has been
understood in detail in the literature thus far. In the closed (so called: k=1)
case certain technical difficulties have been the obstacle that stopped the
development. ... | [
{
"created": "Mon, 18 Dec 2006 00:21:37 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Dec 2006 14:37:05 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Szulc",
"Lukasz",
""
],
[
"Kaminski",
"Wojciech",
""
],
[
"Lewandowski",
"Jerzy",
""
]
] | The basic idea of the LQC applies to every spatially homogeneous cosmological model, however only the spatially flat (so called $k=0$) case has been understood in detail in the literature thus far. In the closed (so called: k=1) case certain technical difficulties have been the obstacle that stopped the development. In... |
1112.4481 | Diego S\'aez-G\'omez | \'Alvaro de la Cruz-Dombriz (ACGC and University Cape Town), Diego
S\'aez-G\'omez (University of the Basque Country) | On the stability of the cosmological solutions in f(R,G) gravity | 30 pages, 15 figures. Figures and conclusions improved, references
added. Version to be published in Classical and Quantum Gravity | Class. Quantum Grav. 29: 245014, 2012 | 10.1088/0264-9381/29/24/245014 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modified gravity is one of the most promising candidates for explaining the
current accelerating expansion of the Universe, and even its unification with
the inflationary epoch. Nevertheless, the wide range of models capable to
explain the phenomena of dark energy, imposes that current research focuses on
a more prec... | [
{
"created": "Mon, 19 Dec 2011 21:00:05 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Dec 2012 16:37:09 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"de la Cruz-Dombriz",
"Álvaro",
"",
"ACGC and University Cape Town"
],
[
"Sáez-Gómez",
"Diego",
"",
"University of the Basque Country"
]
] | Modified gravity is one of the most promising candidates for explaining the current accelerating expansion of the Universe, and even its unification with the inflationary epoch. Nevertheless, the wide range of models capable to explain the phenomena of dark energy, imposes that current research focuses on a more precis... |
2109.07700 | Christoph Schiller | Christoph Schiller | Comment on "Maximum force and cosmic censorship" | 4 pages | Published as Physical Review D 104 (2021) 068501 | 10.1103/PhysRevD.104.068501 | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Despite suggestions to the contrary, no counterargument to the principle of
maximum force or to the equivalent principle of maximum power has yet been
provided.
| [
{
"created": "Thu, 16 Sep 2021 03:47:55 GMT",
"version": "v1"
}
] | 2021-09-17 | [
[
"Schiller",
"Christoph",
""
]
] | Despite suggestions to the contrary, no counterargument to the principle of maximum force or to the equivalent principle of maximum power has yet been provided. |
gr-qc/0110090 | Yosef Verbin | Y. Verbin, S. Madsen, A.L. Larsen and M. Christensen | Classification of String-like Solutions in Dilaton Gravity | 15 pages, 6 figures. To be published in Phys. Rev. D | Phys.Rev. D65 (2002) 063503 | 10.1103/PhysRevD.65.063503 | null | gr-qc astro-ph hep-th | null | The static string-like solutions of the Abelian Higgs model coupled to
dilaton gravity are analyzed and compared to the non-dilatonic case. Except for
a special coupling between the Higgs Lagrangian and the dilaton, the solutions
are flux tubes that generate a non-asymptotically flat geometry. Any point in
parameter ... | [
{
"created": "Mon, 22 Oct 2001 14:07:51 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Dec 2001 08:10:12 GMT",
"version": "v2"
},
{
"created": "Fri, 18 Jan 2002 09:00:46 GMT",
"version": "v3"
}
] | 2009-11-07 | [
[
"Verbin",
"Y.",
""
],
[
"Madsen",
"S.",
""
],
[
"Larsen",
"A. L.",
""
],
[
"Christensen",
"M.",
""
]
] | The static string-like solutions of the Abelian Higgs model coupled to dilaton gravity are analyzed and compared to the non-dilatonic case. Except for a special coupling between the Higgs Lagrangian and the dilaton, the solutions are flux tubes that generate a non-asymptotically flat geometry. Any point in parameter sp... |
1812.04481 | Diego Julio Cirilo-Lombardo | Diego Julio Cirilo-Lombardo | Non-Riemmanian geometry, force-free magnetospheres and the generalized
Grad-Shafranov equation | To be published in International Journal of Geometric Methods in
Modern Physics 2 Vol. 16 (2019) 1950013. 12 pages , no figures (final form in
Journal). arXiv admin note: text overlap with arXiv:1703.02273 by other
authors | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The magnetosphere structure of a magnetar is considered in the context of a
theory of gravity with dynamical torsion field beyond the standard General
Relativity (GR). To this end, the axially symmetric version of the
Grad-Shafranov equation (GSE) is obtained in this theoretical framework. The
resulting GSE solution ... | [
{
"created": "Sun, 9 Dec 2018 07:58:13 GMT",
"version": "v1"
}
] | 2018-12-12 | [
[
"Cirilo-Lombardo",
"Diego Julio",
""
]
] | The magnetosphere structure of a magnetar is considered in the context of a theory of gravity with dynamical torsion field beyond the standard General Relativity (GR). To this end, the axially symmetric version of the Grad-Shafranov equation (GSE) is obtained in this theoretical framework. The resulting GSE solution in... |
1401.7500 | Jansen Formiga | J. B. Formiga | Equivalence between an extension of teleparallelism to a Weyl geometry
and general relativity | 10 pages | null | 10.1007/s10773-014-2003-2 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, an extension of teleparallelism to a Weyl geometry which allows us
to easily establish conformal invariance and "geometrize" electromagnetism has
been presented. In this paper, I extend a result which concerns the existence
of the Schwarzschild solution to a particular class of this extension. In
addition, ... | [
{
"created": "Wed, 29 Jan 2014 13:00:46 GMT",
"version": "v1"
}
] | 2014-01-30 | [
[
"Formiga",
"J. B.",
""
]
] | Recently, an extension of teleparallelism to a Weyl geometry which allows us to easily establish conformal invariance and "geometrize" electromagnetism has been presented. In this paper, I extend a result which concerns the existence of the Schwarzschild solution to a particular class of this extension. In addition, I ... |
1805.07218 | T. Padmanabhan | T. Padmanabhan | The Kinetic Theory of the Mesoscopic Spacetime | This Essay received the Fourth Award in the Gravity Research
Foundation Essay Contest 2018; six pages; v2: minor revision | null | 10.1142/S0218271818460045 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | At the mesoscopic scales --- which interpolate between the macroscopic,
classical, geometry and the microscopic, quantum, structure of spacetime ---
one can identify the density of states of the geometry which arises from the
existence of a zero-point length in the spacetime. This spacetime discreteness
also associat... | [
{
"created": "Wed, 16 May 2018 18:00:04 GMT",
"version": "v1"
},
{
"created": "Mon, 21 May 2018 06:51:58 GMT",
"version": "v2"
}
] | 2018-12-19 | [
[
"Padmanabhan",
"T.",
""
]
] | At the mesoscopic scales --- which interpolate between the macroscopic, classical, geometry and the microscopic, quantum, structure of spacetime --- one can identify the density of states of the geometry which arises from the existence of a zero-point length in the spacetime. This spacetime discreteness also associates... |
gr-qc/9807081 | Jiri Podolsky | J. Podolsky | Non-expanding impulsive gravitational waves | 12 pages, to appear in Class. Quantum Grav | Class.Quant.Grav. 15 (1998) 3229-3239 | 10.1088/0264-9381/15/10/023 | KTF MFF UK JP6 | gr-qc | null | We investigate a class of impulsive gravitational waves which propagate
either in Minkowski or in the (anti-)de Sitter background. These waves are
constructed as impulsive members of the Kundt class $P(\Lambda)$ of
non-twisting, non-expanding type N solutions of vacuum Einstein equations with
a cosmological constant ... | [
{
"created": "Wed, 29 Jul 1998 14:25:29 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Podolsky",
"J.",
""
]
] | We investigate a class of impulsive gravitational waves which propagate either in Minkowski or in the (anti-)de Sitter background. These waves are constructed as impulsive members of the Kundt class $P(\Lambda)$ of non-twisting, non-expanding type N solutions of vacuum Einstein equations with a cosmological constant $\... |
gr-qc/0504067 | Nelson Christensen | Nelson Christensen (for the LIGO Scientific Collaboration) | Veto Studies for LIGO Inspiral Triggers | Submitted to Classical and Quantum Gravity for the special issue for
presentations at GWDAW 9 | Class.Quant.Grav.22:S1059-S1068,2005 | 10.1088/0264-9381/22/18/S20 | null | gr-qc | null | LIGO recently conducted its third scientific data run, S3. Here we summarize
the veto and data quality studies conducted by the LIGO Scientific
Collaboration in connection with the search for binary inspiral signals in the
S3 data. LIGO's interferometer channels and physical environmental monitors
were monitored, and... | [
{
"created": "Fri, 15 Apr 2005 11:28:16 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Christensen",
"Nelson",
"",
"for the LIGO Scientific Collaboration"
]
] | LIGO recently conducted its third scientific data run, S3. Here we summarize the veto and data quality studies conducted by the LIGO Scientific Collaboration in connection with the search for binary inspiral signals in the S3 data. LIGO's interferometer channels and physical environmental monitors were monitored, and e... |
2307.02653 | Krish Jhurani | Krish Jhurani and Tyler McMaken | Existence of Time-like Geodesics in Asymptotically Flat Spacetimes: A
Generalized Topological Criterion | 11 pages, 0 figures | null | null | null | gr-qc math.DG | http://creativecommons.org/licenses/by/4.0/ | This paper examines the issue of the existence and nature of time-like
geodesics in asymptotically flat spacetimes and proposes a novel generalized
topological criterion for the existence of time-like geodesics. Its validity is
proved using theorems such as the Jordan-Brouwer Separation Theorem, the
Raychaudhuri Equa... | [
{
"created": "Wed, 5 Jul 2023 20:58:04 GMT",
"version": "v1"
}
] | 2023-07-07 | [
[
"Jhurani",
"Krish",
""
],
[
"McMaken",
"Tyler",
""
]
] | This paper examines the issue of the existence and nature of time-like geodesics in asymptotically flat spacetimes and proposes a novel generalized topological criterion for the existence of time-like geodesics. Its validity is proved using theorems such as the Jordan-Brouwer Separation Theorem, the Raychaudhuri Equati... |
2003.09456 | Sudarshan Ghonge | Sudarshan Ghonge, Katerina Chatziioannou, James A. Clark, Tyson
Littenberg, Margaret Millhouse, Laura Cadonati, Neil Cornish | Reconstructing gravitational wave signals from binary black hole mergers
with minimal assumptions | 10 pages, 5 figures | Phys. Rev. D 102, 064056 (2020) | 10.1103/PhysRevD.102.064056 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a systematic comparison of the binary black hole (BBH) signal
waveform reconstructed by two independent and complementary approaches used in
LIGO and Virgo source inference: a template-based analysis, and a
morphology-independent analysis. We apply the two approaches to real events and
to two sets of simul... | [
{
"created": "Fri, 20 Mar 2020 18:49:57 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Sep 2020 16:41:14 GMT",
"version": "v2"
}
] | 2020-09-23 | [
[
"Ghonge",
"Sudarshan",
""
],
[
"Chatziioannou",
"Katerina",
""
],
[
"Clark",
"James A.",
""
],
[
"Littenberg",
"Tyson",
""
],
[
"Millhouse",
"Margaret",
""
],
[
"Cadonati",
"Laura",
""
],
[
"Cornish",
"Neil",
... | We present a systematic comparison of the binary black hole (BBH) signal waveform reconstructed by two independent and complementary approaches used in LIGO and Virgo source inference: a template-based analysis, and a morphology-independent analysis. We apply the two approaches to real events and to two sets of simulat... |
gr-qc/9810013 | Ricardo Schiappa | Orfeu Bertolami and Ricardo Schiappa | Modular Quantum Cosmology | Latex, 23 pages, 1 figure. Revised version to appear in Classical and
Quantum Gravity | Class.Quant.Grav. 16 (1999) 2545-2557 | 10.1088/0264-9381/16/7/326 | DF/IST-1.98, MIT-CTP-2786 | gr-qc hep-th | null | We study solutions of the Wheeler-DeWitt equation corresponding to an
S-modular invariant N=1 supergravity model and a closed homogeneous and
isotropic Friedmann-Robertson-Walker spacetime. The issues of inflation and of
the cosmological constant problem are addressed with the help of the relevant
wave functions. We ... | [
{
"created": "Sun, 4 Oct 1998 21:56:54 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Apr 1999 17:35:00 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Bertolami",
"Orfeu",
""
],
[
"Schiappa",
"Ricardo",
""
]
] | We study solutions of the Wheeler-DeWitt equation corresponding to an S-modular invariant N=1 supergravity model and a closed homogeneous and isotropic Friedmann-Robertson-Walker spacetime. The issues of inflation and of the cosmological constant problem are addressed with the help of the relevant wave functions. We fi... |
1201.5725 | H{\aa}kan Andr\'easson | H{\aa}kan Andr\'easson, Christian G. Boehmer, Atifah Mussa | Bounds on M/R for Charged Objects with positive Cosmological constant | 12 pages. Revised version to appear in Class. Quant. Grav | Classical and Quantum Gravity 29 (2012) 095012 | 10.1088/0264-9381/29/9/095012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider charged spherically symmetric static solutions of the
Einstein-Maxwell equations with a positive cosmological constant $\Lambda$. If
$r$ denotes the area radius, $m_g$ and $q$ the gravitational mass and charge of
a sphere with area radius $r$ respectively, we find that for any solution which
satisfies the... | [
{
"created": "Fri, 27 Jan 2012 09:00:01 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Mar 2012 11:10:00 GMT",
"version": "v2"
}
] | 2012-11-13 | [
[
"Andréasson",
"Håkan",
""
],
[
"Boehmer",
"Christian G.",
""
],
[
"Mussa",
"Atifah",
""
]
] | We consider charged spherically symmetric static solutions of the Einstein-Maxwell equations with a positive cosmological constant $\Lambda$. If $r$ denotes the area radius, $m_g$ and $q$ the gravitational mass and charge of a sphere with area radius $r$ respectively, we find that for any solution which satisfies the c... |
2112.06957 | Lu\'is Filipe Costa | L. Filipe O. Costa, Jos\'e Nat\'ario and N. O. Santos | Spinning cylinders in general relativity: a canonical form for the Lewis
metrics of the Weyl class | 15 pages, 2 figures. To appear in the Proceedings of the sixteenth
Marcel Grossmann Meeting (MG16), July 5-10 2021; based on the invited talk
"Gravitomagnetism in the Lewis cylindrical metrics", given in the parallel
session PT5 -- "Dragging is never draggy: MAss and CHarge flows in GR" | Proceedings of the MG16 Meeting on General Relativity, Online, 5 -
10 July 2021, pp. 3982-3998 (2023) | 10.1142/9789811269776_0332 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the main article [CQG 38 (2021) 055003], a new "canonical" form for the
Lewis metrics of the Weyl class has been obtained, depending only on three
parameters -- Komar mass and angular momentum per unit length, plus the angle
deficit -- corresponding to a coordinate system fixed to the "distant stars"
and an everyw... | [
{
"created": "Mon, 13 Dec 2021 19:00:31 GMT",
"version": "v1"
}
] | 2023-01-27 | [
[
"Costa",
"L. Filipe O.",
""
],
[
"Natário",
"José",
""
],
[
"Santos",
"N. O.",
""
]
] | In the main article [CQG 38 (2021) 055003], a new "canonical" form for the Lewis metrics of the Weyl class has been obtained, depending only on three parameters -- Komar mass and angular momentum per unit length, plus the angle deficit -- corresponding to a coordinate system fixed to the "distant stars" and an everywhe... |
2009.07487 | Dipanjan Dey | Dipanjan Dey, Rajibul Shaikh, and Pankaj S. Joshi | Shadow of nulllike and timelike naked singularities without photon
spheres | 10 pages, 10 figures | Phys. Rev. D 103, 024015 (2021) | 10.1103/PhysRevD.103.024015 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we derive general conditions for a shadow to occur, without a
photon sphere in a spacetime, caused by central nulllike or timelike naked
singularities. Using these conditions, we propose classes of spacetimes which
have nulllike and timelike naked singularities at the center, and that fulfill
these `sh... | [
{
"created": "Wed, 16 Sep 2020 06:15:49 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Sep 2020 04:10:59 GMT",
"version": "v2"
}
] | 2021-01-13 | [
[
"Dey",
"Dipanjan",
""
],
[
"Shaikh",
"Rajibul",
""
],
[
"Joshi",
"Pankaj S.",
""
]
] | In this paper, we derive general conditions for a shadow to occur, without a photon sphere in a spacetime, caused by central nulllike or timelike naked singularities. Using these conditions, we propose classes of spacetimes which have nulllike and timelike naked singularities at the center, and that fulfill these `shad... |
1711.11106 | Andronikos Paliathanasis | Gabriele Gionti, S.J. and Andronikos Paliathanasis | Duality transformation and conformal equivalent scalar-tensor theories | 6 pages, no figures, minor revision, to appear in MPLA | null | 10.1142/S0217732318500931 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We deal with the duality symmetry of the Dilaton field in cosmology and
specifically with the so-called Gasperini-Veneziano duality transformation. In
particular, we determine two conformal equivalent theories to the Dilaton
field, and we show that under conformal transformations Gasperini-Veneziano
duality symmetry ... | [
{
"created": "Wed, 29 Nov 2017 21:16:40 GMT",
"version": "v1"
},
{
"created": "Wed, 2 May 2018 11:51:50 GMT",
"version": "v2"
}
] | 2018-06-27 | [
[
"Gionti",
"Gabriele",
""
],
[
"J.",
"S.",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | We deal with the duality symmetry of the Dilaton field in cosmology and specifically with the so-called Gasperini-Veneziano duality transformation. In particular, we determine two conformal equivalent theories to the Dilaton field, and we show that under conformal transformations Gasperini-Veneziano duality symmetry do... |
gr-qc/0607124 | Nikodem Poplawski | Nikodem J. Poplawski | Interacting dark energy in $f(R)$ gravity | 8 pages; published version | Phys.Rev. D74 (2006) 084032 | 10.1103/PhysRevD.74.084032 | null | gr-qc astro-ph hep-th | null | The field equations in $f(R)$ gravity derived from the Palatini variational
principle and formulated in the Einstein conformal frame yield a cosmological
term which varies with time. Moreover, they break the conservation of the
energy--momentum tensor for matter, generating the interaction between matter
and dark ene... | [
{
"created": "Thu, 27 Jul 2006 04:21:35 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Sep 2006 07:04:42 GMT",
"version": "v2"
},
{
"created": "Mon, 30 Oct 2006 19:46:52 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Poplawski",
"Nikodem J.",
""
]
] | The field equations in $f(R)$ gravity derived from the Palatini variational principle and formulated in the Einstein conformal frame yield a cosmological term which varies with time. Moreover, they break the conservation of the energy--momentum tensor for matter, generating the interaction between matter and dark energ... |
0805.2284 | Ruth Lazkoz | L. Fern\'andez-Jambrina and Ruth Lazkoz | Singular fate of the universe in modified theories of gravity | 6 pages, final version, accepted for publication in Physics Letters
B, references added, revtex | Phys.Lett.B670:254-258,2009 | 10.1016/j.physletb.2008.10.061 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the final fate of the universe in modified theories of
gravity. As compared with general relativistic formulations, in these scenarios
the Friedmann equation has additional terms which are relevant for low density
epochs. We analyze the sort of future singularities to be found under the usual
a... | [
{
"created": "Thu, 15 May 2008 12:38:03 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Nov 2008 15:38:22 GMT",
"version": "v2"
}
] | 2009-01-16 | [
[
"Fernández-Jambrina",
"L.",
""
],
[
"Lazkoz",
"Ruth",
""
]
] | In this paper we study the final fate of the universe in modified theories of gravity. As compared with general relativistic formulations, in these scenarios the Friedmann equation has additional terms which are relevant for low density epochs. We analyze the sort of future singularities to be found under the usual ass... |
2307.14003 | Shao-Wen Wei | Shan-Ping Wu, Shao-Wen Wei | Topology of light rings for extremal and non-extremal Kerr-Newman
Taub-NUT black holes without $\mathbb{Z}_2$ symmetry | 22 pages, 10 figures, 2 tables | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Understanding the light ring, one kind fundamental orbit, shall provide us
with novel insight into the astronomical phenomena, such as the ringdown of
binary merger and shadow of black holes. Recently, topological approach has
preliminarily demonstrated its potential advantages on the properties of the
light rings. H... | [
{
"created": "Wed, 26 Jul 2023 07:32:12 GMT",
"version": "v1"
}
] | 2023-07-27 | [
[
"Wu",
"Shan-Ping",
""
],
[
"Wei",
"Shao-Wen",
""
]
] | Understanding the light ring, one kind fundamental orbit, shall provide us with novel insight into the astronomical phenomena, such as the ringdown of binary merger and shadow of black holes. Recently, topological approach has preliminarily demonstrated its potential advantages on the properties of the light rings. How... |
gr-qc/9801068 | null | Jacek Jezierski (University of Warsaw) | Energy and angular momentum of the weak gravitational waves on the
Schwarzschild background -- quasilocal gauge-invariant formulation | 23 pages | Gen.Rel.Grav.31:1855-1890,1999 | 10.1023/A:1026786822107 | null | gr-qc | null | It is shown that the axial and polar perturbations of the spherically
symmetric black hole can be described in a gauge-invariant way. The reduced
phase space describing gravitational waves outside of the horizon is described
by the gauge-invariant quantities. Both degrees of freedom fulfill generalized
scalar wave eq... | [
{
"created": "Tue, 20 Jan 1998 19:41:16 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Jezierski",
"Jacek",
"",
"University of Warsaw"
]
] | It is shown that the axial and polar perturbations of the spherically symmetric black hole can be described in a gauge-invariant way. The reduced phase space describing gravitational waves outside of the horizon is described by the gauge-invariant quantities. Both degrees of freedom fulfill generalized scalar wave equa... |
1611.07209 | Y B Wu | Ya-Bo Wu, Xue Zhang, Bo-Hai Chen, Nan Zhang and Meng-Meng Wu | Energy conditions and constraints on the generalized non-local gravity
model | 12 pages, 14 figures, 1 table | null | 10.1088/0256-307X/34/7/079801 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study and derive the energy conditions in generalized non-local gravity,
which is the modified theory of general relativity (GR) obtained by adding a
term $m^{2n-2}R\Box^{-n}R$ to the Einstein-Hilbert action. Moreover, in order
to get some insight on the meaning of the energy conditions, we illustrate the
evolutio... | [
{
"created": "Tue, 22 Nov 2016 09:18:08 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Mar 2017 03:28:25 GMT",
"version": "v2"
}
] | 2017-08-02 | [
[
"Wu",
"Ya-Bo",
""
],
[
"Zhang",
"Xue",
""
],
[
"Chen",
"Bo-Hai",
""
],
[
"Zhang",
"Nan",
""
],
[
"Wu",
"Meng-Meng",
""
]
] | We study and derive the energy conditions in generalized non-local gravity, which is the modified theory of general relativity (GR) obtained by adding a term $m^{2n-2}R\Box^{-n}R$ to the Einstein-Hilbert action. Moreover, in order to get some insight on the meaning of the energy conditions, we illustrate the evolutions... |
2006.16962 | Avishek Dusoye | Avishek Dusoye, Alvaro de la Cruz-Dombriz, Peter Dunsby, and Nelson J.
Nunes | Disformal couplings in a $\Lambda$CDM background cosmology | 32 pages, 11 figures, 5 tables, Version published in JCAP03(2021)002,
minor changes | JCAP03(2021)002 | 10.1088/1475-7516/2021/03/002 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The coupled quintessence model with disformal couplings is treated here to
mimic the $\Lambda$CDM background. Using this approach, the quintessence
potential does not have to be specified. The model considers a generic fluid
coupled to the quintessence, which is specified to be either dark matter or a
relativistic fl... | [
{
"created": "Tue, 30 Jun 2020 16:58:40 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Jul 2020 17:24:27 GMT",
"version": "v2"
},
{
"created": "Sat, 13 Mar 2021 10:53:52 GMT",
"version": "v3"
}
] | 2021-03-16 | [
[
"Dusoye",
"Avishek",
""
],
[
"de la Cruz-Dombriz",
"Alvaro",
""
],
[
"Dunsby",
"Peter",
""
],
[
"Nunes",
"Nelson J.",
""
]
] | The coupled quintessence model with disformal couplings is treated here to mimic the $\Lambda$CDM background. Using this approach, the quintessence potential does not have to be specified. The model considers a generic fluid coupled to the quintessence, which is specified to be either dark matter or a relativistic flui... |
gr-qc/9906010 | Ms. Amita Shaw | S.Biswas, A.Shaw and B.Modak | Time in Quantum Gravity | 12 Pages, LaTeX, no figure | Int.J.Mod.Phys. D10 (2001) 595-606 | 10.1142/S0218271801001384 | null | gr-qc | null | The Wheeler-DeWitt equation in quantum gravity is timeless in character. In
order to discuss quantum to classical transition of the universe, one uses a
time prescription in quantum gravity to obtain a time contained description
starting from Wheeler-DeWitt equation and WKB ansatz for the WD wavefunction.
The approac... | [
{
"created": "Thu, 3 Jun 1999 09:01:48 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Biswas",
"S.",
""
],
[
"Shaw",
"A.",
""
],
[
"Modak",
"B.",
""
]
] | The Wheeler-DeWitt equation in quantum gravity is timeless in character. In order to discuss quantum to classical transition of the universe, one uses a time prescription in quantum gravity to obtain a time contained description starting from Wheeler-DeWitt equation and WKB ansatz for the WD wavefunction. The approach ... |
2111.10455 | Charlie Hoy | Charlie Hoy, Cameron Mills, Stephen Fairhurst | Evidence for subdominant multipole moments and precession in merging
black-hole-binaries from GWTC-2.1 | 18 pages, 7 figures | null | 10.1103/PhysRevD.106.023019 | LIGO-P2100412 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The LIGO--Virgo--KAGRA collaborations (LVK) produced a catalogue containing
gravitational-wave (GW) observations from the first half of the third GW
observing run (O3a). This catalogue, GWTC-2.1, includes for the first time a
number of \emph{exceptional} GW candidates produced from merging
black-hole-binaries with un... | [
{
"created": "Fri, 19 Nov 2021 22:06:36 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Apr 2022 15:46:49 GMT",
"version": "v2"
}
] | 2022-07-27 | [
[
"Hoy",
"Charlie",
""
],
[
"Mills",
"Cameron",
""
],
[
"Fairhurst",
"Stephen",
""
]
] | The LIGO--Virgo--KAGRA collaborations (LVK) produced a catalogue containing gravitational-wave (GW) observations from the first half of the third GW observing run (O3a). This catalogue, GWTC-2.1, includes for the first time a number of \emph{exceptional} GW candidates produced from merging black-hole-binaries with uneq... |
1405.7916 | Marcos Brum | Marcos Brum and Sergio E. Jor\'as | Hadamard state in Schwarzschild-de Sitter spacetime | More emphasis put on the result. 41 pages. Uses natbib and iopart.
This version is going to be published in Classical and Quantum Gravity. PACS
numbers: 04.62.+v,04.70.Dy,03.65.Fd. arXiv admin note: text overlap with
arXiv:0907.1034 by other authors | Class. Quantum Gravity 32 (2015) 015013 | 10.1088/0264-9381/32/1/015013 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a state in the Schwarzschild-de Sitter spacetime which is
invariant under the action of its group of symmetries. Our state is not defined
in the whole Kruskal extension of this spacetime, but rather in a subset of the
maximally extended conformal diagram. The construction is based on a careful
use of the... | [
{
"created": "Fri, 30 May 2014 17:06:37 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Jul 2014 18:20:58 GMT",
"version": "v2"
},
{
"created": "Mon, 3 Nov 2014 19:18:38 GMT",
"version": "v3"
},
{
"created": "Thu, 27 Nov 2014 17:20:48 GMT",
"version": "v4"
}
] | 2014-12-09 | [
[
"Brum",
"Marcos",
""
],
[
"Jorás",
"Sergio E.",
""
]
] | We construct a state in the Schwarzschild-de Sitter spacetime which is invariant under the action of its group of symmetries. Our state is not defined in the whole Kruskal extension of this spacetime, but rather in a subset of the maximally extended conformal diagram. The construction is based on a careful use of the b... |
0712.2523 | Warren G. Anderson | Warren G. Anderson and Jolien D. E. Creighton | Searches for Gravitational Waves from Binary Neutron Stars: A Review | 30 pages, 5 Figures, to appear in "Short-Period Binary Stars:
Observations, Analyses, and Results", Ed.s Eugene F. Milone, Denis A. Leahy,
David W. Hobill | null | 10.1007/978-1-4020-6544-6_2 | null | gr-qc | null | A new generation of observatories is looking for gravitational waves. These
waves, emitted by highly relativistic systems, will open a new window for ob-
servation of the cosmos when they are detected. Among the most promising
sources of gravitational waves for these observatories are compact binaries in
the final mi... | [
{
"created": "Sat, 15 Dec 2007 15:51:21 GMT",
"version": "v1"
}
] | 2015-11-11 | [
[
"Anderson",
"Warren G.",
""
],
[
"Creighton",
"Jolien D. E.",
""
]
] | A new generation of observatories is looking for gravitational waves. These waves, emitted by highly relativistic systems, will open a new window for ob- servation of the cosmos when they are detected. Among the most promising sources of gravitational waves for these observatories are compact binaries in the final min-... |
1004.0847 | Flavio Mercati | Flavio Mercati, Diego Maz\'on, Giovanni Amelino-Camelia, Jos\'e Manuel
Carmona, Jos\'e Luis Cort\'es, Javier Indur\'ain, Claus Laemmerzahl,
Guglielmo M. Tino | Probing the quantum-gravity realm with slow atoms | LaTex, 13 pages | Class.Quant.Grav.27:215003,2010 | 10.1088/0264-9381/27/21/215003 | null | gr-qc physics.atom-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For the study of Planck-scale modifications of the energy-momentum dispersion
relation, which had been previously focused on the implications for
ultrarelativistic (ultrafast) particles, we consider the possible role of
experiments involving nonrelativistic particles, and particularly atoms. We
extend a recent result... | [
{
"created": "Tue, 6 Apr 2010 13:25:20 GMT",
"version": "v1"
}
] | 2012-03-14 | [
[
"Mercati",
"Flavio",
""
],
[
"Mazón",
"Diego",
""
],
[
"Amelino-Camelia",
"Giovanni",
""
],
[
"Carmona",
"José Manuel",
""
],
[
"Cortés",
"José Luis",
""
],
[
"Induráin",
"Javier",
""
],
[
"Laemmerzahl",
"Claus... | For the study of Planck-scale modifications of the energy-momentum dispersion relation, which had been previously focused on the implications for ultrarelativistic (ultrafast) particles, we consider the possible role of experiments involving nonrelativistic particles, and particularly atoms. We extend a recent result e... |
2208.00599 | Bijan Bagchi | Bijan Bagchi, Sauvik Sen | Artificial Hawking radiation, weak pseudo-Hermiticity and Weyl semimetal
blackhole analogy | 9 pages. arXiv admin note: substantial text overlap with
arXiv:2108.11648 | J. Math. Phys. 63, 122102 (2022) | 10.1063/5.0084494 | null | gr-qc cond-mat.other math-ph math.MP quant-ph | http://creativecommons.org/publicdomain/zero/1.0/ | We examine the possibility of artificial Hawking radiation by proposing a
non-PT-symmetric weakly pseudo-Hermitian two-band model containing a tilting
parameter by pursuing Weyl semimetal blackhole analogy. We determine the
tunnelling probability using such a Hamiltonian through the event horizon that
acts as a class... | [
{
"created": "Mon, 1 Aug 2022 04:10:17 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Aug 2022 06:06:35 GMT",
"version": "v2"
},
{
"created": "Mon, 19 Dec 2022 16:36:11 GMT",
"version": "v3"
}
] | 2022-12-20 | [
[
"Bagchi",
"Bijan",
""
],
[
"Sen",
"Sauvik",
""
]
] | We examine the possibility of artificial Hawking radiation by proposing a non-PT-symmetric weakly pseudo-Hermitian two-band model containing a tilting parameter by pursuing Weyl semimetal blackhole analogy. We determine the tunnelling probability using such a Hamiltonian through the event horizon that acts as a classic... |
2105.02347 | Peter Hintz | Peter Hintz and YuQing Xie | Quasinormal modes of small Schwarzschild-de Sitter black holes | 31 pages, 8 figures | null | 10.1063/5.0062985 | null | gr-qc math.AP math.SP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the behavior of the quasinormal modes (QNMs) of massless and massive
linear waves on Schwarzschild-de Sitter black holes as the black hole mass
tends to 0. Via uniform estimates for a degenerating family of ODEs, we show
that in bounded subsets of the complex plane and for fixed angular momenta, the
QNMs con... | [
{
"created": "Wed, 5 May 2021 22:07:10 GMT",
"version": "v1"
}
] | 2022-02-02 | [
[
"Hintz",
"Peter",
""
],
[
"Xie",
"YuQing",
""
]
] | We study the behavior of the quasinormal modes (QNMs) of massless and massive linear waves on Schwarzschild-de Sitter black holes as the black hole mass tends to 0. Via uniform estimates for a degenerating family of ODEs, we show that in bounded subsets of the complex plane and for fixed angular momenta, the QNMs conve... |
2001.05807 | Maxime Jacquet | Maxime J Jacquet and Friedrich Koenig | The influence of spacetime curvature on quantum emission in optical
analogues to gravity | Draft 2, Main 6 pages, Appendices 1 page, 7 figures, comments are
welcome! | null | 10.21468/SciPostPhysCore.3.1.005 | null | gr-qc cond-mat.other quant-ph | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Quantum fluctuations on curved spacetimes cause the emission of pairs of
particles from the quantum vacuum, as in the Hawking effect from black holes.
We use an optical analogue to gravity to investigate the influence of the
curvature on quantum emission. Due to dispersion, the spacetime curvature
varies with frequen... | [
{
"created": "Thu, 16 Jan 2020 14:09:37 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Jun 2020 15:19:38 GMT",
"version": "v2"
}
] | 2020-11-04 | [
[
"Jacquet",
"Maxime J",
""
],
[
"Koenig",
"Friedrich",
""
]
] | Quantum fluctuations on curved spacetimes cause the emission of pairs of particles from the quantum vacuum, as in the Hawking effect from black holes. We use an optical analogue to gravity to investigate the influence of the curvature on quantum emission. Due to dispersion, the spacetime curvature varies with frequency... |
0808.0642 | Yen Cheong Lee | Atsushi Higuchi, Yen Cheong Lee | How to use retarded Green's functions in de Sitter spacetime | 31 pages with 7 figures | Phys.Rev.D78:084031,2008 | 10.1103/PhysRevD.78.084031 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate in examples that the covariant retarded Green's functions in
electromagnetism and linearized gravity work as expected in de Sitter
spacetime. We first clarify how retarded Green's functions should be used in
spacetimes with spacelike past infinity such as de Sitter spacetime. In
particular, we remind t... | [
{
"created": "Tue, 5 Aug 2008 15:39:20 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Sep 2008 15:01:30 GMT",
"version": "v2"
}
] | 2010-05-12 | [
[
"Higuchi",
"Atsushi",
""
],
[
"Lee",
"Yen Cheong",
""
]
] | We demonstrate in examples that the covariant retarded Green's functions in electromagnetism and linearized gravity work as expected in de Sitter spacetime. We first clarify how retarded Green's functions should be used in spacetimes with spacelike past infinity such as de Sitter spacetime. In particular, we remind the... |
2405.12049 | Michael Cramer Andersen | Michael Cramer Andersen | Micro-cosmos model of a nucleon | 18 pages, 5 figures | Modern Physics Letters A, Vol. 39, No. 12, 2450053 (2024) | 10.1142/S0217732324500536 | null | gr-qc nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This study explores the age-old quest to construct a geometric model of a
quantum particle. While static classical particle models have largely been
dismissed, the focus has now shifted to intricate dynamic models that hold the
promise of reconciling general relativity with quantum mechanics. We propose
that matter p... | [
{
"created": "Mon, 20 May 2024 14:15:19 GMT",
"version": "v1"
}
] | 2024-05-21 | [
[
"Andersen",
"Michael Cramer",
""
]
] | This study explores the age-old quest to construct a geometric model of a quantum particle. While static classical particle models have largely been dismissed, the focus has now shifted to intricate dynamic models that hold the promise of reconciling general relativity with quantum mechanics. We propose that matter par... |
1905.00762 | Andronikos Paliathanasis | Antonios Mitsopoulos, Michael Tsamparlis and Andronikos Paliathanasis | Constructing the CKVs of Bianchi III and V spacetimes | 10 pages, no figures, to appear in MPLA | null | 10.1142/S0217732319503267 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We determine the conformal algebra of Bianchi III and Bianchi V spacetimes
or, equivalently, we determine all Bianchi III and Bianchi V spacetimes which
admit a proper conformal Killing vector. The algorithm that we use has been
developed in Class. Quantum. Grav. 15, 2909 (1998) and concerns the computation
of the CK... | [
{
"created": "Thu, 2 May 2019 14:18:34 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jul 2019 09:39:15 GMT",
"version": "v2"
}
] | 2020-01-29 | [
[
"Mitsopoulos",
"Antonios",
""
],
[
"Tsamparlis",
"Michael",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | We determine the conformal algebra of Bianchi III and Bianchi V spacetimes or, equivalently, we determine all Bianchi III and Bianchi V spacetimes which admit a proper conformal Killing vector. The algorithm that we use has been developed in Class. Quantum. Grav. 15, 2909 (1998) and concerns the computation of the CKVs... |
2201.07180 | Luca Fabbri | Luca Fabbri | A note on singularity avoidance in fourth-order gravity | 5 pages | Universe:8,51(2022) | 10.3390/universe8010051 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the fourth-order differential theory of gravitation to treat the
problem of singularity avoidance: studying the short-distance behaviour in the
case of black-holes and the big-bang we are going to see a way to attack the
issue from a general perspective.
| [
{
"created": "Fri, 14 Jan 2022 14:23:45 GMT",
"version": "v1"
}
] | 2022-01-19 | [
[
"Fabbri",
"Luca",
""
]
] | We consider the fourth-order differential theory of gravitation to treat the problem of singularity avoidance: studying the short-distance behaviour in the case of black-holes and the big-bang we are going to see a way to attack the issue from a general perspective. |
1609.01149 | Enrico Santamato | Francesco De Martini and Enrico Santamato | The geometrical nature of the cosmological inflation in the framework of
the Weyl-Dirac conformal gravity theory | International Journal of Theoretical Physics 2017 | null | 10.1007/s10773-017-3465-9 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nature of the scalar field responsible for the cosmological inflation,
the \qo{inflaton}, is found to be rooted in the most fundamental concept of the
Weyl's differential geometry: the parallel displacement of vectors in curved
space-time. The Euler-Lagrange theory based on a scalar-tensor Weyl-Dirac
Lagrangian l... | [
{
"created": "Thu, 1 Sep 2016 07:53:02 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Oct 2017 13:33:56 GMT",
"version": "v2"
}
] | 2017-10-24 | [
[
"De Martini",
"Francesco",
""
],
[
"Santamato",
"Enrico",
""
]
] | The nature of the scalar field responsible for the cosmological inflation, the \qo{inflaton}, is found to be rooted in the most fundamental concept of the Weyl's differential geometry: the parallel displacement of vectors in curved space-time. The Euler-Lagrange theory based on a scalar-tensor Weyl-Dirac Lagrangian lea... |
2301.13180 | Robertus Potting | Robertus Potting | Massive Gravity and Lorentz Symmetry | Presented at the Ninth Meeting on CPT and Lorentz Symmetry,
Bloomington, Indiana, May 17-26, 2022 | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by-nc-nd/4.0/ | We consider Lorentz-symmetry properties of the ghost-free massive gravity
theory proposed by de Rham, Gabadadze, and Tolley. In particular, we present
potentially observable effects in gravitational-wave propagation and in
Newton's law, including Lorentz-violating signals.
| [
{
"created": "Mon, 30 Jan 2023 18:48:10 GMT",
"version": "v1"
}
] | 2023-01-31 | [
[
"Potting",
"Robertus",
""
]
] | We consider Lorentz-symmetry properties of the ghost-free massive gravity theory proposed by de Rham, Gabadadze, and Tolley. In particular, we present potentially observable effects in gravitational-wave propagation and in Newton's law, including Lorentz-violating signals. |
1203.0294 | Nikodem Poplawski | Nikodem Poplawski | Affine theory of gravitation | 8 pages; revised version | Gen. Relativ. Gravit. 46, 1625 (2014) | 10.1007/s10714-013-1625-7 | null | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new theory of gravitation, in which the affine connection is the
only dynamical variable describing the gravitational field. We construct the
simplest dynamical Lagrangian density that is entirely composed from the
connection, via its curvature and torsion, and is an algebraic function of its
derivatives... | [
{
"created": "Thu, 1 Mar 2012 20:59:23 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Aug 2012 23:41:29 GMT",
"version": "v2"
}
] | 2013-12-17 | [
[
"Poplawski",
"Nikodem",
""
]
] | We propose a new theory of gravitation, in which the affine connection is the only dynamical variable describing the gravitational field. We construct the simplest dynamical Lagrangian density that is entirely composed from the connection, via its curvature and torsion, and is an algebraic function of its derivatives. ... |
2403.12286 | Pedro Cavalcanti Malta | P. C. Malta, C. A. D. Zarro | Bounds on the photon mass via the Shapiro effect in the solar system | 7 + 4 pages, 3 figures. Added appendix D | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effects of a finite mass for the photon on its propagation in a
weak gravitational field. In particular, we analyse the gravitational time
delay, also known as the Shapiro effect. We work in isotropic coordinates in
the weak-field limit and find that the mass-dependent corrections enhance the
gravitation... | [
{
"created": "Mon, 18 Mar 2024 22:12:15 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Jun 2024 15:22:06 GMT",
"version": "v2"
},
{
"created": "Fri, 9 Aug 2024 07:25:26 GMT",
"version": "v3"
}
] | 2024-08-12 | [
[
"Malta",
"P. C.",
""
],
[
"Zarro",
"C. A. D.",
""
]
] | We study the effects of a finite mass for the photon on its propagation in a weak gravitational field. In particular, we analyse the gravitational time delay, also known as the Shapiro effect. We work in isotropic coordinates in the weak-field limit and find that the mass-dependent corrections enhance the gravitational... |
2310.17266 | Justin Feng | Justin C. Feng and Shinji Mukohyama and Sante Carloni | Singularity at the demise of a black hole | 12 pages, 7 figures. Added and corrected a reference, minor
formatting changes. Matches published version | Phys. Rev. D 109, 024040 (2024) | 10.1103/PhysRevD.109.024040 | YITP-23-134, IPMU23-0039 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a class of quasiregular singularities characterized by points
possessing two future-directed light cones and two past-directed light cones.
Such singularities appear in the $1+1$ trousers spacetime and the
Deutsch-Politzer spacetime. We argue that these singularities are relevant for
describing the end po... | [
{
"created": "Thu, 26 Oct 2023 09:36:55 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Jan 2024 03:47:21 GMT",
"version": "v2"
}
] | 2024-01-29 | [
[
"Feng",
"Justin C.",
""
],
[
"Mukohyama",
"Shinji",
""
],
[
"Carloni",
"Sante",
""
]
] | We consider a class of quasiregular singularities characterized by points possessing two future-directed light cones and two past-directed light cones. Such singularities appear in the $1+1$ trousers spacetime and the Deutsch-Politzer spacetime. We argue that these singularities are relevant for describing the end poin... |
gr-qc/0511113 | Erhard Scholz | Erhard Scholz | On the geometry of cosmological model building | null | null | null | null | gr-qc | null | This article analyzes the present anomalies of cosmology from the point of
view of integrable Weyl geometry. It uses P.A.M. Dirac's proposal for a weak
extension of general relativity, with some small adaptations. Simple models
with interesting geometrical and physical properties, not belonging to the
Friedmann-Lema\... | [
{
"created": "Mon, 21 Nov 2005 08:33:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Scholz",
"Erhard",
""
]
] | This article analyzes the present anomalies of cosmology from the point of view of integrable Weyl geometry. It uses P.A.M. Dirac's proposal for a weak extension of general relativity, with some small adaptations. Simple models with interesting geometrical and physical properties, not belonging to the Friedmann-Lema\^{... |
1912.02832 | Merced Montesinos | Merced Montesinos, Mariano Celada | Canonical analysis with no second-class constraints of $BF$ gravity with
Immirzi parameter | Corrected typos, added references | Phys. Rev. D 101, 084043 (2020) | 10.1103/PhysRevD.101.084043 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we revisit the canonical analysis of $BF$ gravity with the
Immirzi parameter and a cosmological constant. By examining the constraint on
the $B$ field, we realize that the analysis can be performed in a
Lorentz-covariant fashion while utterly avoiding the introduction of
second-class constraints during ... | [
{
"created": "Thu, 5 Dec 2019 19:00:05 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Apr 2020 18:00:09 GMT",
"version": "v2"
}
] | 2020-04-27 | [
[
"Montesinos",
"Merced",
""
],
[
"Celada",
"Mariano",
""
]
] | In this paper we revisit the canonical analysis of $BF$ gravity with the Immirzi parameter and a cosmological constant. By examining the constraint on the $B$ field, we realize that the analysis can be performed in a Lorentz-covariant fashion while utterly avoiding the introduction of second-class constraints during th... |
2206.12250 | Yu-Xiao Liu | Yong-Qiang Wang, Shao-Wen Wei, Yu-Xiao Liu | Comment on ''Traversable Wormholes in General Relativity'' | 1 page, 1 figure, 1 table | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the letter titled ''Traversable Wormholes in General Relativity'' [Phys.
Rev. Lett. 128, 091104 (2022)], R. A. Konoplya and A. Zhidenko have constructed
an asymmetric wormhole solution, which is not symmetric about the throat and is
compounded from smooth gravitational and charged Dirac fields. However, the
author... | [
{
"created": "Fri, 24 Jun 2022 12:43:32 GMT",
"version": "v1"
}
] | 2022-06-27 | [
[
"Wang",
"Yong-Qiang",
""
],
[
"Wei",
"Shao-Wen",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | In the letter titled ''Traversable Wormholes in General Relativity'' [Phys. Rev. Lett. 128, 091104 (2022)], R. A. Konoplya and A. Zhidenko have constructed an asymmetric wormhole solution, which is not symmetric about the throat and is compounded from smooth gravitational and charged Dirac fields. However, the authors ... |
1912.01768 | Shun Arai | Shun Arai, Purnendu Karmakar, and Atsushi Nishizawa | Cosmological evolution of viable models in the generalized scalar-tensor
theory | 43 pages, 20 figures, updated to the PRD accepted version | Phys. Rev. D 102, 024003 (2020) | 10.1103/PhysRevD.102.024003 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the parameter distributions of the viable generalized
scalar-tensor theory with conventional dust matter after GW170817 in a
model-independent way. We numerically construct the models by computing the
time evolution of a scalar field, which leads to a positive definite
second-order Hamiltonian and are ... | [
{
"created": "Wed, 4 Dec 2019 02:03:29 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Oct 2020 11:16:10 GMT",
"version": "v2"
}
] | 2020-10-22 | [
[
"Arai",
"Shun",
""
],
[
"Karmakar",
"Purnendu",
""
],
[
"Nishizawa",
"Atsushi",
""
]
] | We investigate the parameter distributions of the viable generalized scalar-tensor theory with conventional dust matter after GW170817 in a model-independent way. We numerically construct the models by computing the time evolution of a scalar field, which leads to a positive definite second-order Hamiltonian and are co... |
gr-qc/0309062 | Bijan Saha | Bijan Saha | Interacting scalar and spinor fields in Bianchi type I universe filled
with magneto-fluid | RevTex4, 8 pages, no figures | Astrophys.Space Sci. 299 (2005) 149-158 | 10.1007/s10509-005-5162-z | null | gr-qc | null | Self-consistent system of spinor, scalar and BI gravitational fields in
presence of magneto-fluid and $\Lambda$-term is considered. Assuming that the
expansion of the BI universe is proportional to the $\sigma_1^1$ component of
the shear tensor, exact solutions for the metric functions, as well as for
scalar and spin... | [
{
"created": "Fri, 12 Sep 2003 14:22:57 GMT",
"version": "v1"
}
] | 2015-05-01 | [
[
"Saha",
"Bijan",
""
]
] | Self-consistent system of spinor, scalar and BI gravitational fields in presence of magneto-fluid and $\Lambda$-term is considered. Assuming that the expansion of the BI universe is proportional to the $\sigma_1^1$ component of the shear tensor, exact solutions for the metric functions, as well as for scalar and spinor... |
1009.0671 | Jonathan Luk | Jonathan Luk | A Vector Field Method Approach to Improved Decay for Solutions to the
Wave Equation on a Slowly Rotating Kerr Black Hole | Typos corrected | null | null | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that sufficiently regular solutions to the wave equation
$\Box_{g_K}\Phi=0$ on the exterior of a sufficiently slowly rotating Kerr black
hole obey the estimates $|\Phi|\leq C (t^*)^{-3/2+\eta}$ on a compact region of
$r$. This is proved with the help of a new vector field commutator that is
analogous to the ... | [
{
"created": "Fri, 3 Sep 2010 13:54:08 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Apr 2011 14:04:09 GMT",
"version": "v2"
}
] | 2011-04-25 | [
[
"Luk",
"Jonathan",
""
]
] | We prove that sufficiently regular solutions to the wave equation $\Box_{g_K}\Phi=0$ on the exterior of a sufficiently slowly rotating Kerr black hole obey the estimates $|\Phi|\leq C (t^*)^{-3/2+\eta}$ on a compact region of $r$. This is proved with the help of a new vector field commutator that is analogous to the sc... |
1910.04372 | Chi-Yong Lin | You-Wei Hsiao, Da-Shin Lee, Chi-Yong Lin | Equatorial light bending around Kerr-Newman black holes | 24 pages, 10 figures. Revised version as published in Physical Review
D 101, 064070 (2020) | Phys. Rev. D 101, 064070 (2020) | 10.1103/PhysRevD.101.064070 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the deflection angle of a light ray as it traverses on the
equatorial plane of a charged spinning black hole. We provide detailed analysis
of the light ray's trajectory, and derive the closed-form expression of the
deflection angle due to the black hole in terms of elliptic integrals. In
particular, the geod... | [
{
"created": "Thu, 10 Oct 2019 05:24:26 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Apr 2020 08:06:06 GMT",
"version": "v2"
}
] | 2020-04-15 | [
[
"Hsiao",
"You-Wei",
""
],
[
"Lee",
"Da-Shin",
""
],
[
"Lin",
"Chi-Yong",
""
]
] | We study the deflection angle of a light ray as it traverses on the equatorial plane of a charged spinning black hole. We provide detailed analysis of the light ray's trajectory, and derive the closed-form expression of the deflection angle due to the black hole in terms of elliptic integrals. In particular, the geodes... |
2112.08480 | Luciano Petruzziello | Massimo Blasone, Salvatore Capozziello, Gaetano Lambiase, Luciano
Petruzziello | Violation of the equivalence principle in curvature based extended
gravity at finite temperature | null | null | 10.1142/S0219887822500554 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the possible violation of the Equivalence Principle at finite
temperature T in the framework of curvature based Extended Theories of Gravity.
Specifically, we first show how it is possible to derive Equivalence Principle
violation from Quantum Field Theory at non-vanishing T. Subsequently, we
exhibit how th... | [
{
"created": "Wed, 15 Dec 2021 21:00:49 GMT",
"version": "v1"
}
] | 2022-05-23 | [
[
"Blasone",
"Massimo",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"Lambiase",
"Gaetano",
""
],
[
"Petruzziello",
"Luciano",
""
]
] | We review the possible violation of the Equivalence Principle at finite temperature T in the framework of curvature based Extended Theories of Gravity. Specifically, we first show how it is possible to derive Equivalence Principle violation from Quantum Field Theory at non-vanishing T. Subsequently, we exhibit how this... |
1211.2246 | Gergely Sz\'ekely | Hajnal Andr\'eka, Judit X. Madar\'asz, Istv\'an N\'emeti, and Gergely
Sz\'ekely | A note on "Einstein's special relativity beyond the speed of light by
James M. Hill and Barry J. Cox" | 7 pages, 3 figures | Proceedings of the Royal Society A 469(2154):6pp. (2013) | 10.1098/rspa.2012.0672 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the transformations J. M. Hill and B. J. Cox introduce between
inertial observers moving faster than light with respect to each other are
consistent with Einstein's principle of relativity only if the spacetime is 2
dimensional.
| [
{
"created": "Fri, 9 Nov 2012 21:12:57 GMT",
"version": "v1"
},
{
"created": "Sun, 17 Feb 2013 09:03:25 GMT",
"version": "v2"
}
] | 2014-09-30 | [
[
"Andréka",
"Hajnal",
""
],
[
"Madarász",
"Judit X.",
""
],
[
"Németi",
"István",
""
],
[
"Székely",
"Gergely",
""
]
] | We show that the transformations J. M. Hill and B. J. Cox introduce between inertial observers moving faster than light with respect to each other are consistent with Einstein's principle of relativity only if the spacetime is 2 dimensional. |
2111.13380 | Hocheol Lee | Bum-Hoon Lee, Hocheol Lee, Wonwoo Lee | Hairy black holes in dilatonic Einstein-Gauss-Bonnet theory | 14 pages, 10 figures. This article is prepared for the Proceedings of
the 17th Italian-Korean Symposium for Relativistic Astrophysics | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study black hole solutions in dilatonic Einstein-Gauss-Bonnet theory with
a coupling constant $\alpha$ between the dilaton field and the Gauss-Bonnet
term. In a previous study, we considered the black hole with the vanishing
cosmological constant in this theory and constructed the hairy black hole
solution with th... | [
{
"created": "Fri, 26 Nov 2021 09:36:23 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Nov 2022 03:30:39 GMT",
"version": "v2"
}
] | 2022-11-04 | [
[
"Lee",
"Bum-Hoon",
""
],
[
"Lee",
"Hocheol",
""
],
[
"Lee",
"Wonwoo",
""
]
] | We study black hole solutions in dilatonic Einstein-Gauss-Bonnet theory with a coupling constant $\alpha$ between the dilaton field and the Gauss-Bonnet term. In a previous study, we considered the black hole with the vanishing cosmological constant in this theory and constructed the hairy black hole solution with the ... |
gr-qc/9605025 | Mark J. Gotay | Mark J. Gotay (University of Hawai`i), Jacques Demaret (Universite de
Liege) | Some remarks on singularities in quantum cosmology | 4 pps., LaTeX2e. Substantial revisions. To appear in: Proc. of the
Second Conference on Constrained Dynamics and Quantum Gravity, Santa
Margherita Ligure, Italy, 17-21 September 1996. Edited by V. de Alfaro et al | Nucl.Phys.Proc.Suppl. 57 (1997) 227-230 | 10.1016/S0920-5632(97)00385-X | null | gr-qc | null | We discuss to what extent classical singularities persist upon quantization
in two simple cosmological models.
| [
{
"created": "Mon, 13 May 1996 09:47:55 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Nov 1996 12:30:10 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Gotay",
"Mark J.",
"",
"University of Hawai`i"
],
[
"Demaret",
"Jacques",
"",
"Universite de\n Liege"
]
] | We discuss to what extent classical singularities persist upon quantization in two simple cosmological models. |
1807.09081 | Costantino Pacilio | Richard Brito and Costantino Pacilio | Quasinormal modes of weakly charged Einstein-Maxwell-dilaton black holes | 20 pages, 11 figures; v2: references added; v3: Matches published
version | Phys. Rev. D 98, 104042 (2018) | 10.1103/PhysRevD.98.104042 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein-Maxwell-dilaton theory is an interesting and well-motivated
theoretical laboratory to explore the impact of new fundamental degrees of
freedom in the context of testing the no-hair conjecture, due to the existence
of hairy black hole solutions together with the propagation of scalar, vector
and tensor modes.... | [
{
"created": "Tue, 24 Jul 2018 13:15:25 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Jul 2018 15:20:01 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Nov 2018 19:42:43 GMT",
"version": "v3"
}
] | 2018-12-05 | [
[
"Brito",
"Richard",
""
],
[
"Pacilio",
"Costantino",
""
]
] | Einstein-Maxwell-dilaton theory is an interesting and well-motivated theoretical laboratory to explore the impact of new fundamental degrees of freedom in the context of testing the no-hair conjecture, due to the existence of hairy black hole solutions together with the propagation of scalar, vector and tensor modes. I... |
gr-qc/0211073 | Stanislav Alexeyev | N.N.Popov (Russian Academy of Sciences Computing Center) | Two and Three parametric regular generalizations of spherically
symmetric and axially symmetric metrics | 5 pages, 1 figure | null | null | null | gr-qc | null | Regular generalizations of spherically and axially symmetric metrics and
their properties are considered. Newton gravity law generalizations are reduced
for null geodesic.
| [
{
"created": "Fri, 22 Nov 2002 12:33:36 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Popov",
"N. N.",
"",
"Russian Academy of Sciences Computing Center"
]
] | Regular generalizations of spherically and axially symmetric metrics and their properties are considered. Newton gravity law generalizations are reduced for null geodesic. |
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