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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1805.09459 | Edward Anderson | Edward Anderson | Absolute versus Relational Debate: a Modern Global Version | 22 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Suppose one seeks to free oneself from a symmetric absolute space by
quotienting out its symmetry group. This in general however fails to erase all
memory of this absolute space's symmetry properties. Stratification is one
major reason for this, which is present in both a) Kendall-type Shape Theory
and subsequent Rel... | [
{
"created": "Thu, 24 May 2018 00:15:53 GMT",
"version": "v1"
}
] | 2018-05-25 | [
[
"Anderson",
"Edward",
""
]
] | Suppose one seeks to free oneself from a symmetric absolute space by quotienting out its symmetry group. This in general however fails to erase all memory of this absolute space's symmetry properties. Stratification is one major reason for this, which is present in both a) Kendall-type Shape Theory and subsequent Relat... |
2202.08293 | Stephen Taylor | Stephen R. Taylor, Joseph Simon, Levi Schult, Nihan Pol, William G.
Lamb | A Parallelized Bayesian Approach To Accelerated Gravitational-Wave
Background Characterization | 14 pages, 6 figures. Matches version accepted by PRD | null | 10.1103/PhysRevD.105.084049 | null | gr-qc astro-ph.GA astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The characterization of nanohertz-frequency gravitational waves (GWs) with
pulsar-timing arrays requires a continual expansion of datasets and monitored
pulsars. Whereas detection of the stochastic GW background is predicated on
measuring a distinctive pattern of inter-pulsar correlations, characterizing
the backgrou... | [
{
"created": "Wed, 16 Feb 2022 19:01:54 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Mar 2022 01:40:42 GMT",
"version": "v2"
}
] | 2022-05-11 | [
[
"Taylor",
"Stephen R.",
""
],
[
"Simon",
"Joseph",
""
],
[
"Schult",
"Levi",
""
],
[
"Pol",
"Nihan",
""
],
[
"Lamb",
"William G.",
""
]
] | The characterization of nanohertz-frequency gravitational waves (GWs) with pulsar-timing arrays requires a continual expansion of datasets and monitored pulsars. Whereas detection of the stochastic GW background is predicated on measuring a distinctive pattern of inter-pulsar correlations, characterizing the background... |
0806.2515 | Ion I. Cotaescu | Ion I. Cotaescu and Cosmin Crucean | The quantum theory of the free Maxwell field on the de Sitter expanding
universe | 17 pages no figures | Prog.Theor.Phys.124:1051-1066,2010 | 10.1143/PTP.124.1051 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The theory of the free Maxwell field in two moving frames on the de Sitter
spacetime is investigated pointing out that the conserved momentum and energy
operators do not commute to each other. This leads us to consider new plane
waves solutions of the Maxwell equation which are eigenfunctions of the energy
operator. ... | [
{
"created": "Mon, 16 Jun 2008 07:58:32 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Oct 2008 07:48:23 GMT",
"version": "v2"
},
{
"created": "Thu, 16 Sep 2010 08:50:35 GMT",
"version": "v3"
},
{
"created": "Mon, 22 Nov 2010 10:38:27 GMT",
"version": "v4"
}
] | 2011-03-15 | [
[
"Cotaescu",
"Ion I.",
""
],
[
"Crucean",
"Cosmin",
""
]
] | The theory of the free Maxwell field in two moving frames on the de Sitter spacetime is investigated pointing out that the conserved momentum and energy operators do not commute to each other. This leads us to consider new plane waves solutions of the Maxwell equation which are eigenfunctions of the energy operator. Su... |
2301.03901 | Farruh Atamurotov | A. Ditta, G. Mustafa, G. Abbas, Farruh Atamurotov, Kimet Jusufi | Constraining study of circular orbits and accretion disk around
nonlinear electrodynamics black hole | 22 pages, 13 figures | null | 10.1088/1475-7516/2023/08/002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The very latest observation of $M87$ supermassive black hole (BH) by the
Event Horizon Telescope (EHT) provides the accretion onto BHs is an interesting
study in the theory of gravity. We study the geodesics structure and accretion
near a nonlinear electrodynamics BH in strong and weak field approximations.
These app... | [
{
"created": "Tue, 10 Jan 2023 10:58:06 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Mar 2023 17:29:14 GMT",
"version": "v2"
},
{
"created": "Thu, 1 Jun 2023 16:19:00 GMT",
"version": "v3"
}
] | 2023-08-09 | [
[
"Ditta",
"A.",
""
],
[
"Mustafa",
"G.",
""
],
[
"Abbas",
"G.",
""
],
[
"Atamurotov",
"Farruh",
""
],
[
"Jusufi",
"Kimet",
""
]
] | The very latest observation of $M87$ supermassive black hole (BH) by the Event Horizon Telescope (EHT) provides the accretion onto BHs is an interesting study in the theory of gravity. We study the geodesics structure and accretion near a nonlinear electrodynamics BH in strong and weak field approximations. These appro... |
2108.07269 | Zheng-Wen Long | Xin-Dong Du and Chao-Yun Long | The Influence of Approximation in Generalized Uncertainty Principle on
Black Hole Evaporation | null | JCAP04(2022)031 | 10.1088/1475-7516/2022/04/031 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The generalized uncertainty principle is often used to modify various
thermodynamics systems by regarding the greater-than-equal relation as an
approximate relation. We give a method to improve this approximation and
compare the differences between the original and improved methods during the
evaporation of black hol... | [
{
"created": "Mon, 16 Aug 2021 04:37:50 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Aug 2021 14:51:24 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Aug 2021 13:44:19 GMT",
"version": "v3"
},
{
"created": "Thu, 26 Aug 2021 12:28:14 GMT",
"version": "v4"
},
{
"c... | 2022-10-13 | [
[
"Du",
"Xin-Dong",
""
],
[
"Long",
"Chao-Yun",
""
]
] | The generalized uncertainty principle is often used to modify various thermodynamics systems by regarding the greater-than-equal relation as an approximate relation. We give a method to improve this approximation and compare the differences between the original and improved methods during the evaporation of black hole ... |
gr-qc/9608018 | Jai-chan Hwang | J. Hwang | Cosmological Perturbations with Multiple Scalar Fields | 2 pages, revtex, no figures | null | null | null | gr-qc | null | In this brief note we present a set of equations describing the evolution of
perturbed scalar fields in a cosmological spacetime with multiple scalar
fields. We take into account of the simultaneously excited full metric
perturbations in the context of the uniform-curvature gauge which is known to
be the best choice.... | [
{
"created": "Thu, 8 Aug 1996 07:06:50 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hwang",
"J.",
""
]
] | In this brief note we present a set of equations describing the evolution of perturbed scalar fields in a cosmological spacetime with multiple scalar fields. We take into account of the simultaneously excited full metric perturbations in the context of the uniform-curvature gauge which is known to be the best choice. T... |
1711.02442 | Georgios Loukes-Gerakopoulos | Ond\v{r}ej Zelenka and Georgios Lukes-Gerakopoulos | Chaotic motion in the Johannsen-Psaltis spacetime | 8 pages, 3 figures, submitted to the proceedings of RAGtime 19, Opava
23.-26.10.2017 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Johannsen-Psaltis spacetime is a perturbation of the Kerr spacetime
designed to avoid pathologies like naked singularities and closed timelike
curves. This spacetime depends not only on the mass and the spin of the compact
object, but also on extra parameters, making the spacetime deviate from Kerr;
in this work ... | [
{
"created": "Tue, 7 Nov 2017 12:45:28 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Nov 2017 14:26:24 GMT",
"version": "v2"
}
] | 2017-11-09 | [
[
"Zelenka",
"Ondřej",
""
],
[
"Lukes-Gerakopoulos",
"Georgios",
""
]
] | The Johannsen-Psaltis spacetime is a perturbation of the Kerr spacetime designed to avoid pathologies like naked singularities and closed timelike curves. This spacetime depends not only on the mass and the spin of the compact object, but also on extra parameters, making the spacetime deviate from Kerr; in this work we... |
1809.00913 | Juan Ram\'on Mu\~noz de Nova | Juan Ram\'on Mu\~noz de Nova, Katrine Golubkov, Victor I. Kolobov, and
Jeff Steinhauer | Observation of thermal Hawking radiation at the Hawking temperature in
an analogue black hole | 11 pages, 4 figures. Minor improvements added with respect to v1 | Nature 569, 688-691 (2019) | 10.1038/s41586-019-1241-0 | null | gr-qc cond-mat.quant-gas | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We measure the correlation spectrum of the Hawking radiation emitted by an
analogue black hole and find it to be thermal at the Hawking temperature
implied by the analogue surface gravity. The Hawking radiation is in the regime
of linear dispersion, in analogy with a real black hole. Furthermore, the
radiation inside... | [
{
"created": "Tue, 4 Sep 2018 12:10:51 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Sep 2018 16:44:00 GMT",
"version": "v2"
}
] | 2019-09-24 | [
[
"de Nova",
"Juan Ramón Muñoz",
""
],
[
"Golubkov",
"Katrine",
""
],
[
"Kolobov",
"Victor I.",
""
],
[
"Steinhauer",
"Jeff",
""
]
] | We measure the correlation spectrum of the Hawking radiation emitted by an analogue black hole and find it to be thermal at the Hawking temperature implied by the analogue surface gravity. The Hawking radiation is in the regime of linear dispersion, in analogy with a real black hole. Furthermore, the radiation inside o... |
2107.12111 | Chris Van Den Broeck | Pawan Kumar Gupta, Thomas F.M. Spieksma, Peter T.H. Pang, Gideon
Koekoek, Chris Van Den Broeck | Bounding dark charges on binary black holes using gravitational waves | 11 pages, 8 captioned figures | Phys. Rev. D 104, 063041 (2021) | 10.1103/PhysRevD.104.063041 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | In models of minicharged dark matter associated with a hidden $U(1)$
symmetry, astrophysical black holes may acquire a "dark" charge, in such a way
that the inspiral dynamics of binary black holes can be formally described by
an Einstein-Maxwell theory. Charges enter the gravitational wave signal
predominantly throug... | [
{
"created": "Mon, 26 Jul 2021 11:08:45 GMT",
"version": "v1"
}
] | 2021-09-29 | [
[
"Gupta",
"Pawan Kumar",
""
],
[
"Spieksma",
"Thomas F. M.",
""
],
[
"Pang",
"Peter T. H.",
""
],
[
"Koekoek",
"Gideon",
""
],
[
"Broeck",
"Chris Van Den",
""
]
] | In models of minicharged dark matter associated with a hidden $U(1)$ symmetry, astrophysical black holes may acquire a "dark" charge, in such a way that the inspiral dynamics of binary black holes can be formally described by an Einstein-Maxwell theory. Charges enter the gravitational wave signal predominantly through ... |
gr-qc/0402109 | A. Lewis Licht | A. Lewis Licht | Gravitational Waves on Conductors | 19 pages, revtex4, more realistic value used for the estimated high
frequency cosmic gravitational wave amplitude | null | null | null | gr-qc | null | We consider a gravitational wave of arbitrary frequency incident on a normal
or a super-conductor. The gravitationally induced fields inside the conductor
are derived. The outward propagating EM waves are calculated for a low
frequency wave on a small sphere and for a high frequency wave incident on a
large disk. We ... | [
{
"created": "Wed, 25 Feb 2004 00:56:36 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Mar 2004 23:09:36 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Licht",
"A. Lewis",
""
]
] | We consider a gravitational wave of arbitrary frequency incident on a normal or a super-conductor. The gravitationally induced fields inside the conductor are derived. The outward propagating EM waves are calculated for a low frequency wave on a small sphere and for a high frequency wave incident on a large disk. We es... |
gr-qc/9801078 | Beverly K. Berger | Beverly K. Berger (Oakland) and Vincent Moncrief (Yale) | Numerical Evidence that the Singularity in Polarized U(1) Symmetric
Cosmologies on $T^3 \times R$ is Velocity Dominated | 8 pages, RevTex, 4 figures, uses epsf | Phys.Rev. D57 (1998) 7235-7240 | 10.1103/PhysRevD.57.7235 | null | gr-qc | null | Numerical evidence supports the conjecture that polarized U(1) symmetric
cosmologies have asymptotically velocity term dominated singularities.
| [
{
"created": "Thu, 22 Jan 1998 21:17:47 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Berger",
"Beverly K.",
"",
"Oakland"
],
[
"Moncrief",
"Vincent",
"",
"Yale"
]
] | Numerical evidence supports the conjecture that polarized U(1) symmetric cosmologies have asymptotically velocity term dominated singularities. |
2312.02862 | Amodio Carleo | Amodio Carleo | Constraints on non-local gravity from binary pulsars gravitational
emission | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Non-local theories of gravity are considered extended theories of gravity,
meaning that when the non-local terms are canceled out, the limit of General
Relativity (GR) is obtained. Several reasons have led us to consider this
theory with increasing interest, but primarily non-locality emerges in a
natural way as a si... | [
{
"created": "Tue, 5 Dec 2023 16:15:39 GMT",
"version": "v1"
}
] | 2023-12-06 | [
[
"Carleo",
"Amodio",
""
]
] | Non-local theories of gravity are considered extended theories of gravity, meaning that when the non-local terms are canceled out, the limit of General Relativity (GR) is obtained. Several reasons have led us to consider this theory with increasing interest, but primarily non-locality emerges in a natural way as a side... |
gr-qc/9411021 | Hernando Quevedo | Hernando Quevedo and Roberto Sussman | Thermodynamics of the Stephani Universes | 25 pages, Plain.TeX, four figures | J.Math.Phys. 36 (1995) 1353-1377 | 10.1063/1.531126 | null | gr-qc | null | We examine the consistency of the thermodynamics of the most general class of
conformally flat solution with an irrotational perfect fluid source (the
Stephani Universes). For the case when the isometry group has dimension
$r\ge2$, the Gibbs-Duhem relation is always integrable, but if $r<2$ it is only
integrable for ... | [
{
"created": "Tue, 8 Nov 1994 16:45:18 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Quevedo",
"Hernando",
""
],
[
"Sussman",
"Roberto",
""
]
] | We examine the consistency of the thermodynamics of the most general class of conformally flat solution with an irrotational perfect fluid source (the Stephani Universes). For the case when the isometry group has dimension $r\ge2$, the Gibbs-Duhem relation is always integrable, but if $r<2$ it is only integrable for th... |
0903.5527 | Leonardo Fernandez-Jambrina | L. Fern\'andez-Jambrina, R. Lazkoz | Geodesic Behaviour around Cosmological Milestones | 9 pp. Uses jpconf.cls. Published in XXIXth Spanish Relativity Meeting
(ERE 2006): Einstein's Legacy: from the Theoretical Paradise to Astrophysical
Observations. Eds: P. Apostolopoulos, C. Bona, J. Carot, Ll. Mas, A.M.
Sintes, J. Stela | J.Phys.Conf.Ser.66:012015,2007 | 10.1088/1742-6596/66/1/012015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we provide a thorough classification of
Friedman-Lema\^itre-Robertson-Walker (FLRW) cosmological models in terms of the
strong or weak character of their singularities according to the usual
definitions. The classification refers to a generalised Puiseux power expansion
of the scale factor of the model ... | [
{
"created": "Tue, 31 Mar 2009 17:45:37 GMT",
"version": "v1"
}
] | 2010-12-17 | [
[
"Fernández-Jambrina",
"L.",
""
],
[
"Lazkoz",
"R.",
""
]
] | In this paper we provide a thorough classification of Friedman-Lema\^itre-Robertson-Walker (FLRW) cosmological models in terms of the strong or weak character of their singularities according to the usual definitions. The classification refers to a generalised Puiseux power expansion of the scale factor of the model ar... |
gr-qc/9701026 | Claude Barrabes | C. Barrabes and G.F. Bressange | Singular Hypersurfaces in Scalar-Tensor Theories of Gravity | 38 pages, latex, no figures, to appear in Classical and Quantum
Gravity | Class.Quant.Grav.14:805-824,1997 | 10.1088/0264-9381/14/3/021 | null | gr-qc | null | We study singular hypersurfaces in tensor multi-scalar theories of gravity.
We derive in a distributional and then in an intrinsic way, the general
equations of junction valid for all types of hypersurfaces, in particular for
lightlike shells and write the general equations of evolution for these
objects. We apply th... | [
{
"created": "Mon, 13 Jan 1997 15:20:32 GMT",
"version": "v1"
}
] | 2011-05-12 | [
[
"Barrabes",
"C.",
""
],
[
"Bressange",
"G. F.",
""
]
] | We study singular hypersurfaces in tensor multi-scalar theories of gravity. We derive in a distributional and then in an intrinsic way, the general equations of junction valid for all types of hypersurfaces, in particular for lightlike shells and write the general equations of evolution for these objects. We apply this... |
2102.10419 | Michail Chabanov | Michail Chabanov, Luciano Rezzolla, Dirk H. Rischke | General-relativistic hydrodynamics of non-perfect fluids: 3+1
conservative formulation and application to viscous black-hole accretion | 54 pages, 5 figures, matches accepted version in MNRAS | null | 10.1093/mnras/stab1384 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the relativistic hydrodynamics of non-perfect fluids with the
goal of determining a formulation that is suited for numerical integration in
special-relativistic and general-relativistic scenarios. To this end, we review
the various formulations of relativistic second-order dissipative hydrodynamics
propos... | [
{
"created": "Sat, 20 Feb 2021 18:54:11 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Feb 2023 18:01:59 GMT",
"version": "v2"
}
] | 2023-02-27 | [
[
"Chabanov",
"Michail",
""
],
[
"Rezzolla",
"Luciano",
""
],
[
"Rischke",
"Dirk H.",
""
]
] | We consider the relativistic hydrodynamics of non-perfect fluids with the goal of determining a formulation that is suited for numerical integration in special-relativistic and general-relativistic scenarios. To this end, we review the various formulations of relativistic second-order dissipative hydrodynamics proposed... |
2105.14621 | Lorenzo Gavassino | Lorenzo Gavassino, Marco Antonelli and Brynmor Haskell | Thermodynamic stability implies causality | Main Article (6 pages, 2 figures) + Supplementary Material (8 pages,
2 figures) | Physical Review Letters 128, 010606 (Published 6 January 2022) | 10.1103/PhysRevLett.128.010606 | null | gr-qc astro-ph.HE hep-ph physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The stability conditions of a relativistic hydrodynamic theory can be derived
directly from the requirement that the entropy should be maximised in
equilibrium. Here we use a simple geometrical argument to prove that, if the
hydrodynamic theory is stable according to this entropic criterion, then
localised perturbati... | [
{
"created": "Sun, 30 May 2021 20:45:36 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Dec 2021 21:55:40 GMT",
"version": "v2"
}
] | 2022-01-11 | [
[
"Gavassino",
"Lorenzo",
""
],
[
"Antonelli",
"Marco",
""
],
[
"Haskell",
"Brynmor",
""
]
] | The stability conditions of a relativistic hydrodynamic theory can be derived directly from the requirement that the entropy should be maximised in equilibrium. Here we use a simple geometrical argument to prove that, if the hydrodynamic theory is stable according to this entropic criterion, then localised perturbation... |
1608.02777 | Saulo Pereira H | S. H. Pereira, S. S. A. Pinho, J. M. Hoff da Silva, and J. F. Jesus | $\Lambda(t)$ cosmology induced by a slowly varying Elko field | 15 pages, 4 figures; New section on evolution of density
perturbations added | JCAP01(2017)055 | 10.1088/1475-7516/2017/01/055 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work the exact Friedmann-Robertson-Walker equations for an Elko
spinor field coupled to gravity in an Einstein-Cartan framework are presented.
The torsion functions coupling the Elko field spin-connection to gravity can be
exactly solved and the FRW equations for the system assume a relatively simple
form. In... | [
{
"created": "Tue, 9 Aug 2016 12:08:34 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Dec 2016 19:16:40 GMT",
"version": "v2"
}
] | 2017-09-13 | [
[
"Pereira",
"S. H.",
""
],
[
"Pinho",
"S. S. A.",
""
],
[
"da Silva",
"J. M. Hoff",
""
],
[
"Jesus",
"J. F.",
""
]
] | In this work the exact Friedmann-Robertson-Walker equations for an Elko spinor field coupled to gravity in an Einstein-Cartan framework are presented. The torsion functions coupling the Elko field spin-connection to gravity can be exactly solved and the FRW equations for the system assume a relatively simple form. In t... |
2407.08728 | Isaac Chun Fung Wong | Isaac C. F. Wong, Peter T. H. Pang, Milan Wils, Francesco Cireddu,
Walter Del Pozzo, Tjonnie G. F. Li | The Potential Impact of Noise Correlation in Next-generation
Gravitational Wave Detectors | 10 pages, 2 figures | null | null | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Building upon the statistical formulation for parameter estimation in the
presence of correlated noise proposed by Cireddu et al., we present an initial
study to incorporate the effects of correlated noise into the analyses of
various detector designs' performance. We consider a two L-shaped detector
configuration lo... | [
{
"created": "Thu, 11 Jul 2024 17:57:50 GMT",
"version": "v1"
}
] | 2024-07-12 | [
[
"Wong",
"Isaac C. F.",
""
],
[
"Pang",
"Peter T. H.",
""
],
[
"Wils",
"Milan",
""
],
[
"Cireddu",
"Francesco",
""
],
[
"Del Pozzo",
"Walter",
""
],
[
"Li",
"Tjonnie G. F.",
""
]
] | Building upon the statistical formulation for parameter estimation in the presence of correlated noise proposed by Cireddu et al., we present an initial study to incorporate the effects of correlated noise into the analyses of various detector designs' performance. We consider a two L-shaped detector configuration loca... |
0910.4372 | Neil J. Cornish | Neil J. Cornish | Alternative derivation of the response of interferometric gravitational
wave detectors | 2 pages | Phys.Rev.D80:087101,2009 | 10.1103/PhysRevD.80.087101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has recently been pointed out by Finn that the long-standing derivation of
the response of an interferometric gravitational wave detector contains several
errors. Here I point out that a contemporaneous derivation of the gravitational
wave response for spacecraft doppler tracking and pulsar timing avoids these
pit... | [
{
"created": "Thu, 22 Oct 2009 17:35:35 GMT",
"version": "v1"
}
] | 2009-11-05 | [
[
"Cornish",
"Neil J.",
""
]
] | It has recently been pointed out by Finn that the long-standing derivation of the response of an interferometric gravitational wave detector contains several errors. Here I point out that a contemporaneous derivation of the gravitational wave response for spacecraft doppler tracking and pulsar timing avoids these pitfa... |
2303.15546 | Lee Smolin | Lee Smolin | The path integral formulation of energetic causal set models of the
universe | 13 pages, 4 Figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | I study several aspects of the path(st) integral we formulated in previous
papers on energetic causal sets with Cortes and others. The focus here is on
quantum field theories, including the standard model of particle physics. I
show that the the theory can be extended to a quantum field theory, cut off in
momentum sp... | [
{
"created": "Mon, 27 Mar 2023 18:54:02 GMT",
"version": "v1"
}
] | 2023-03-29 | [
[
"Smolin",
"Lee",
""
]
] | I study several aspects of the path(st) integral we formulated in previous papers on energetic causal sets with Cortes and others. The focus here is on quantum field theories, including the standard model of particle physics. I show that the the theory can be extended to a quantum field theory, cut off in momentum spac... |
1301.5314 | Naresh Dadhich | Naresh Dadhich | A novel derivation of the rotating black hole metric | 4 pages, to agree with the published version except one additional
reference, pubmished | Gen. Relativ. Grav. (2013) 45:2383-2388 | 10.1007/s10714-013-1594-x | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the rotating black hole metric by appealing to ellipsoidal symmetry
of space and a general guiding principle of incorporation of the Newtonian
acceleration for massive and no acceleration for massless particles.
| [
{
"created": "Tue, 22 Jan 2013 05:31:33 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Sep 2013 08:31:36 GMT",
"version": "v2"
},
{
"created": "Mon, 14 Oct 2013 06:29:14 GMT",
"version": "v3"
}
] | 2013-10-15 | [
[
"Dadhich",
"Naresh",
""
]
] | We derive the rotating black hole metric by appealing to ellipsoidal symmetry of space and a general guiding principle of incorporation of the Newtonian acceleration for massive and no acceleration for massless particles. |
0908.2651 | Enrico Rodrigo | Enrico Rodrigo | Denouement of a Wormhole-Brane Encounter | 12 pages, 2 figures, accepted by Int. J. Mod. Phys. D | Int.J.Mod.Phys.D18:1809-1819,2009 | 10.1142/S0218271809015333 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Higher-dimensional black holes have long been considered within the context
of brane worlds. Recently, it was shown that the brane-world ethos also permits
the consideration of higher-dimensional wormholes. When such a wormhole,
preexisting in the bulk, impinges upon our universe, taken to be a
positive-tension 3-bra... | [
{
"created": "Tue, 18 Aug 2009 22:30:36 GMT",
"version": "v1"
}
] | 2009-12-17 | [
[
"Rodrigo",
"Enrico",
""
]
] | Higher-dimensional black holes have long been considered within the context of brane worlds. Recently, it was shown that the brane-world ethos also permits the consideration of higher-dimensional wormholes. When such a wormhole, preexisting in the bulk, impinges upon our universe, taken to be a positive-tension 3-brane... |
1407.2816 | Adam D. Helfer | Adam D. Helfer | Energy-momentum and asymptotic geometry | 22 pages, to appear in Phys. Rev. D | null | 10.1103/PhysRevD.90.044005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I show that radiative space-times are not asymptotically flat; rather, the
radiation field gives rise to holonomy at null infinity. (This was noted
earlier, by Bramson.) This means that, when gravitational radiation is present,
asymptotically covariantly constant vector fields do not exist. On the other
hand, accordi... | [
{
"created": "Thu, 10 Jul 2014 14:55:25 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Helfer",
"Adam D.",
""
]
] | I show that radiative space-times are not asymptotically flat; rather, the radiation field gives rise to holonomy at null infinity. (This was noted earlier, by Bramson.) This means that, when gravitational radiation is present, asymptotically covariantly constant vector fields do not exist. On the other hand, according... |
gr-qc/0503123 | Noriko Shiiki | Noriko Shiiki and Nobuyuki Sawado | Regular and Black Hole Solutions in the Einstein-Skyrme Theory with
Negative Cosmological Constant | 10 pages, 9 figures, comments and one reference added, to appear in
Class.Quant.Grav | Class.Quant.Grav. 22 (2005) 3561-3574 | 10.1088/0264-9381/22/17/015 | null | gr-qc | null | We study spherically symmetric regular and black hole solutions in the
Einstein-Skyrme theory with a negative cosmological constant. The Skyrme field
configuration depends on the value of the cosmological constant in a similar
manner to effectively varying the gravitational constant. We find the maximum
value of the ... | [
{
"created": "Thu, 31 Mar 2005 10:48:53 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Jul 2005 04:25:01 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Shiiki",
"Noriko",
""
],
[
"Sawado",
"Nobuyuki",
""
]
] | We study spherically symmetric regular and black hole solutions in the Einstein-Skyrme theory with a negative cosmological constant. The Skyrme field configuration depends on the value of the cosmological constant in a similar manner to effectively varying the gravitational constant. We find the maximum value of the co... |
2308.01078 | S. N Sajadi | S.N. Sajadi, Robert B. Mann, H. Sheikhahmadi, M. Khademi | Black hole solutions to Einstein-Bel-Robinson gravity | Major changes, with significant corrections and new solutions
presented; figure added | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this paper, we study the physical properties of black holes in the
framework of the recently proposed Einstien-Bel-Robinson gravity. We show that
interestingly the theory propagates a transverse and massive graviton on a
maximally symmetric background with positive energy. There is also a single
ghost-free branch ... | [
{
"created": "Wed, 2 Aug 2023 11:03:25 GMT",
"version": "v1"
},
{
"created": "Sun, 28 Jan 2024 19:54:00 GMT",
"version": "v2"
}
] | 2024-01-30 | [
[
"Sajadi",
"S. N.",
""
],
[
"Mann",
"Robert B.",
""
],
[
"Sheikhahmadi",
"H.",
""
],
[
"Khademi",
"M.",
""
]
] | In this paper, we study the physical properties of black holes in the framework of the recently proposed Einstien-Bel-Robinson gravity. We show that interestingly the theory propagates a transverse and massive graviton on a maximally symmetric background with positive energy. There is also a single ghost-free branch th... |
2002.07907 | Ra\'ul Ag\"uero-Santacruz | Raul Aguero-Santacruz and David Bermudez | Hawking radiation in optics and beyond | 20 pages, 8 figures, 64 references. Contribution to: "The next
generation of analogue gravity experiments" at the Royal Society on December
2019 | null | 10.1098/rsta.2019.0223 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hawking radiation was originally proposed in astrophysics, but it has been
generalized and extended to other physical systems receiving the name of
analogue Hawking radiation. In the last two decades, several attempts have been
made to measure it in a laboratory, one of the most successful systems is in
optics. Light... | [
{
"created": "Tue, 18 Feb 2020 22:22:33 GMT",
"version": "v1"
}
] | 2021-03-17 | [
[
"Aguero-Santacruz",
"Raul",
""
],
[
"Bermudez",
"David",
""
]
] | Hawking radiation was originally proposed in astrophysics, but it has been generalized and extended to other physical systems receiving the name of analogue Hawking radiation. In the last two decades, several attempts have been made to measure it in a laboratory, one of the most successful systems is in optics. Light i... |
2407.04452 | Marie-No\"elle C\'el\'erier | Marie-No\"elle C\'el\'erier | Precision cosmology with exact inhomogeneous solutions of General
Relativity: the Szekeres models | 20 pages, no figure | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by-nc-sa/4.0/ | The exact Friedman solution to the field equations of General Relativity (GR)
describing an homogeneous and isotropic universe together with its linear and
higher-order perturbations are the theoretical roots of the current standard
model of cosmology. However, despite its global successes, this standard model
curren... | [
{
"created": "Fri, 5 Jul 2024 12:06:33 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Jul 2024 07:54:40 GMT",
"version": "v2"
}
] | 2024-07-22 | [
[
"Célérier",
"Marie-Noëlle",
""
]
] | The exact Friedman solution to the field equations of General Relativity (GR) describing an homogeneous and isotropic universe together with its linear and higher-order perturbations are the theoretical roots of the current standard model of cosmology. However, despite its global successes, this standard model currentl... |
2405.16031 | Jianbo Lu | Jianbo Lu, Yongxin Guo and G. Y. Chee | Lorentz group in gravity theories | 35 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, it is argued that in gravity theories the local Lorentz group
can not be considered as a gauge group in the sense of Yang-Mills theories, the
Lorentz connection is not a gauge potential but an artificial force, the
inertial force. A genuine gravity theory should be a translation gauge theory,
though a ... | [
{
"created": "Sat, 25 May 2024 03:08:16 GMT",
"version": "v1"
}
] | 2024-05-28 | [
[
"Lu",
"Jianbo",
""
],
[
"Guo",
"Yongxin",
""
],
[
"Chee",
"G. Y.",
""
]
] | In this paper, it is argued that in gravity theories the local Lorentz group can not be considered as a gauge group in the sense of Yang-Mills theories, the Lorentz connection is not a gauge potential but an artificial force, the inertial force. A genuine gravity theory should be a translation gauge theory, though a un... |
1606.08775 | Mauricio Bellini | Juan Ignacio Musmarra, Mariano Anabitarte, Mauricio Bellini (IFIMAR -
CONICET & UNMdP) | Mass density of the Earth from a Gravito-Electro-Magnetic 5D vacuum | 9 pages, 2 figures | null | 10.1139/cjp-2017-0118 | null | gr-qc astro-ph.EP physics.geo-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the mass density of the Earth using a Gravito-Electro-Magnetic
theory on an extended 5D Schwarzschild-de Sitter metric, in which we define the
vacuum. Our results are in very good agreement with that of the
Dziewonski-Anderson model.
| [
{
"created": "Tue, 28 Jun 2016 16:16:32 GMT",
"version": "v1"
}
] | 2018-02-14 | [
[
"Musmarra",
"Juan Ignacio",
"",
"IFIMAR -\n CONICET & UNMdP"
],
[
"Anabitarte",
"Mariano",
"",
"IFIMAR -\n CONICET & UNMdP"
],
[
"Bellini",
"Mauricio",
"",
"IFIMAR -\n CONICET & UNMdP"
]
] | We calculate the mass density of the Earth using a Gravito-Electro-Magnetic theory on an extended 5D Schwarzschild-de Sitter metric, in which we define the vacuum. Our results are in very good agreement with that of the Dziewonski-Anderson model. |
gr-qc/9504002 | J. Anandan | Jeeva Anandan | TOPOLOGICAL PHASES AND THEIR DUALITY IN ELECTROMAGNETIC AND
GRAVITATIONAL FIELDS | 17 pages, tex, no figures | null | null | null | gr-qc | null | The duality found by Aharonov and Casher for topological phases in the
electromagnetic field is generalized to an arbitrary linear interaction. This
provides a heuristic principle for obtaining a new solution of the field
equations from a known solution. This is applied to the general relativistic
Sagnac phase shift ... | [
{
"created": "Mon, 3 Apr 1995 22:34:16 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Apr 1995 14:13:51 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Anandan",
"Jeeva",
""
]
] | The duality found by Aharonov and Casher for topological phases in the electromagnetic field is generalized to an arbitrary linear interaction. This provides a heuristic principle for obtaining a new solution of the field equations from a known solution. This is applied to the general relativistic Sagnac phase shift du... |
0711.1057 | Ujjal Debnath | Soma Nath, Ujjal Debnath and Subenoy Chakraborty | Junction Conditions and Consequences of Quasi-Spherical Space-Time with
Electro-Magnetic Field and Vaidya Matric | 8 latex pages, RevTex style, no figures | Astrophys.SpaceSci.313:431-436,2008 | 10.1007/s10509-007-9713-3 | null | gr-qc | null | In this work the junction conditions between the exterior
Reissner-Nordstrom-Vaidya space-time with the interior quasi-spherical Szekeres
space-time have been studied for analyzing gravitational collapse in the
presence of a magneto-hydrodynamic fluid undergoing dissipation in the form of
heat flow. We have discussed... | [
{
"created": "Wed, 7 Nov 2007 10:17:51 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Nath",
"Soma",
""
],
[
"Debnath",
"Ujjal",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | In this work the junction conditions between the exterior Reissner-Nordstrom-Vaidya space-time with the interior quasi-spherical Szekeres space-time have been studied for analyzing gravitational collapse in the presence of a magneto-hydrodynamic fluid undergoing dissipation in the form of heat flow. We have discussed a... |
1304.3591 | Yasuo Ezawa | Yasuo Ezawa and Yoshiaki Ohkuwa | Refined form of the paper "Canonical formalism of the f(R)-type gravity
in terms of Lie derivatives" | We refined and compactified the presentation of the previous paper
[arXiv:gr-qc/0507060] | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We refine the presentation of the previous paper of our group, Y.Ezawa et
al., Class. Quantum Grav. {\bf 23} (2006), 3205 [arXiv:gr-qc/0507060]. In that
paper, we proposed a canonical formalism of f(R)-type generalized gravity by
using the Lie derivatives instead of the time derivatives. However, the use of
the Lie d... | [
{
"created": "Fri, 12 Apr 2013 10:20:34 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Sep 2013 10:51:24 GMT",
"version": "v2"
}
] | 2013-09-17 | [
[
"Ezawa",
"Yasuo",
""
],
[
"Ohkuwa",
"Yoshiaki",
""
]
] | We refine the presentation of the previous paper of our group, Y.Ezawa et al., Class. Quantum Grav. {\bf 23} (2006), 3205 [arXiv:gr-qc/0507060]. In that paper, we proposed a canonical formalism of f(R)-type generalized gravity by using the Lie derivatives instead of the time derivatives. However, the use of the Lie der... |
gr-qc/0602045 | Gustav Holzegel | Gustav Holzegel | A Note on the Instability of Lorentzian Taub-NUT-Space | 13 pages, no figures | Class.Quant.Grav. 23 (2006) 3951-3962 | 10.1088/0264-9381/23/11/017 | DAMTP-2006-16 | gr-qc hep-th | null | I show that there are no SU(2)-invariant (time-dependent) tensorial
perturbations of Lorentzian Taub-NUT space. It follows that the spacetime is
unstable at the linear level against generic perturbations. I speculate that
this fact is responsible for so far unsuccessful attempts to define a sensible
thermodynamics fo... | [
{
"created": "Mon, 13 Feb 2006 14:28:16 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Holzegel",
"Gustav",
""
]
] | I show that there are no SU(2)-invariant (time-dependent) tensorial perturbations of Lorentzian Taub-NUT space. It follows that the spacetime is unstable at the linear level against generic perturbations. I speculate that this fact is responsible for so far unsuccessful attempts to define a sensible thermodynamics for ... |
gr-qc/9504046 | null | H. T. Cho and A. D. Speliotopoulos | Gravitational Waves in Bianchi Type-I Universes I: The Classical Theory | 34 papers, written in ReVTeX, submitted to Physical Review D | Phys.Rev. D52 (1995) 5445-5458 | 10.1103/PhysRevD.52.5445 | IP-ASTP-08-95 | gr-qc astro-ph hep-th | null | The propagation of classical gravitational waves in Bianchi Type-I universes
is studied. We find that gravitational waves in Bianchi Type-I universes are
not equivalent to two minimally coupled massless scalar fields as it is for the
Robertson-Walker universe. Due to its tensorial nature, the gravitational wave
is mu... | [
{
"created": "Thu, 27 Apr 1995 01:06:08 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Cho",
"H. T.",
""
],
[
"Speliotopoulos",
"A. D.",
""
]
] | The propagation of classical gravitational waves in Bianchi Type-I universes is studied. We find that gravitational waves in Bianchi Type-I universes are not equivalent to two minimally coupled massless scalar fields as it is for the Robertson-Walker universe. Due to its tensorial nature, the gravitational wave is much... |
0911.3090 | Kazuhiro Agatsuma | Kazuhiro Agatsuma, Koji Arai, Masa-Katsu Fujimoto, Seiji Kawamura,
Kazuaki Kuroda, Osamu Miyakawa, Shinji Miyoki, Masatake Ohashi, Toshikazu
Suzuki, Ryutaro Takahashi, Daisuke Tatsumi, Souichi Telada, Takashi Uchiyama,
Kazuhiro Yamamoto, and CLIO collaborators | Thermal-noise-limited underground interferometer CLIO | 10 pages, 6 figures, Proceedings of the 8th Edoardo Amaldi Conference
on Gravitational Waves | Class. Quantum Grav. 27 (2010) 084022 | 10.1088/0264-9381/27/8/084022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report on the current status of CLIO (Cryogenic Laser Interferometer
Observatory), which is a prototype interferometer for LCGT (Large Scale
Cryogenic Gravitational-Wave Telescope). LCGT is a Japanese next-generation
interferometric gravitational wave detector featuring the use of cryogenic
mirrors and a quiet und... | [
{
"created": "Mon, 16 Nov 2009 17:29:51 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Jan 2010 14:36:23 GMT",
"version": "v2"
}
] | 2014-01-28 | [
[
"Agatsuma",
"Kazuhiro",
""
],
[
"Arai",
"Koji",
""
],
[
"Fujimoto",
"Masa-Katsu",
""
],
[
"Kawamura",
"Seiji",
""
],
[
"Kuroda",
"Kazuaki",
""
],
[
"Miyakawa",
"Osamu",
""
],
[
"Miyoki",
"Shinji",
""
],
... | We report on the current status of CLIO (Cryogenic Laser Interferometer Observatory), which is a prototype interferometer for LCGT (Large Scale Cryogenic Gravitational-Wave Telescope). LCGT is a Japanese next-generation interferometric gravitational wave detector featuring the use of cryogenic mirrors and a quiet under... |
gr-qc/0408027 | Pedro Jose Pompeia P. J. Pompeia | B. M. Pimentel, P. J. Pompeia, J. F. da Rocha-Neto | The Hamilton-Jacobi Approach to Teleparallelism | 12 pages, no figure | Nuovo Cim.B120:981-992,2005 | 10.1393/ncb/i2005-10085-4 | null | gr-qc | null | We intend to analyse the constraint structure of Teleparallelism employing
the Hamilton-Jacobi formalism for singular systems. This study is conducted
without using an ADM 3+1 decomposition and without fixing time gauge condition.
It can be verified that the field equations constitute an integrable system.
| [
{
"created": "Tue, 10 Aug 2004 13:25:27 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Jul 2005 18:02:04 GMT",
"version": "v2"
}
] | 2010-11-11 | [
[
"Pimentel",
"B. M.",
""
],
[
"Pompeia",
"P. J.",
""
],
[
"da Rocha-Neto",
"J. F.",
""
]
] | We intend to analyse the constraint structure of Teleparallelism employing the Hamilton-Jacobi formalism for singular systems. This study is conducted without using an ADM 3+1 decomposition and without fixing time gauge condition. It can be verified that the field equations constitute an integrable system. |
1512.06253 | Oldrich Semerak | Old\v{r}ich Semer\'ak | Spinning particles in vacuum spacetimes of different curvature types:
Natural reference tetrads, and massless particles | 12 pages, no figures | Phys. Rev. D 92, 124036 (2015) | 10.1103/PhysRevD.92.124036 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a previous paper, we considered the motion of massive spinning test
particles in the "pole-dipole" approximation, as described by the
Mathisson--Papapetrou--Dixon (MPD) equations, and examined its properties in
dependence on the spin supplementary condition. We decomposed the equations in
the orthonormal tetrad ba... | [
{
"created": "Sat, 19 Dec 2015 14:09:35 GMT",
"version": "v1"
}
] | 2015-12-22 | [
[
"Semerák",
"Oldřich",
""
]
] | In a previous paper, we considered the motion of massive spinning test particles in the "pole-dipole" approximation, as described by the Mathisson--Papapetrou--Dixon (MPD) equations, and examined its properties in dependence on the spin supplementary condition. We decomposed the equations in the orthonormal tetrad base... |
gr-qc/0610089 | Arunava Bhadra Dr. | A. Bhadra, K. Sarkar and K. K. Nandi | Testing gravity at the Second post-Newtonian level through gravitational
deflection of massive particles | 5 pages, couple of equations of the previous version are corrected | Phys.Rev.D75:123004,2007 | 10.1103/PhysRevD.75.123004 | null | gr-qc | null | Expression for second post-Newtonian level gravitational deflection angle of
massive particles is obtained in a model independent framework. Several of its
important implications including the possibility of testing gravitational
theories at that level are discussed.
| [
{
"created": "Wed, 18 Oct 2006 11:07:46 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Dec 2006 08:08:52 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Bhadra",
"A.",
""
],
[
"Sarkar",
"K.",
""
],
[
"Nandi",
"K. K.",
""
]
] | Expression for second post-Newtonian level gravitational deflection angle of massive particles is obtained in a model independent framework. Several of its important implications including the possibility of testing gravitational theories at that level are discussed. |
gr-qc/9709081 | Mikhail Volkov | O. Sarbach, N. Straumann, and M. S. Volkov | Internal structure of Einstein-Yang-Mills-Dilaton black holes | 6 pages, LaTeX, 4 eps figures, Talk given at the International
Workshop on the Internal Structure of Black Holes and Spacetime
Singularities, Haifa, Israel, June 29 - July 3, 1997 | null | null | null | gr-qc | null | We study the interior structure of the Einstein-Yang-Mills-Dilaton black
holes as a function of the dilaton coupling constant $\gamma\in [0,1]$. For
$\gamma\neq 0$ the solutions have no internal Cauchy horizons and the field
amplitudes follow a power law behavior near the singularity. As $\gamma$
decreases, the solut... | [
{
"created": "Tue, 30 Sep 1997 13:14:40 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sarbach",
"O.",
""
],
[
"Straumann",
"N.",
""
],
[
"Volkov",
"M. S.",
""
]
] | We study the interior structure of the Einstein-Yang-Mills-Dilaton black holes as a function of the dilaton coupling constant $\gamma\in [0,1]$. For $\gamma\neq 0$ the solutions have no internal Cauchy horizons and the field amplitudes follow a power law behavior near the singularity. As $\gamma$ decreases, the solutio... |
1503.02480 | Sasa Ilijic | Dubravko Horvat, Sasa Ilijic, Anamarija Kirin, Zoran Narancic | Note on the charged boson stars with torsion-coupled field | 11 pages, 2 figures, v2: appendix added, matches published version | Phys. Rev. D 92, 024045 (2015) | 10.1103/PhysRevD.92.024045 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within the framework of the extended teleparallel gravity, a new class of
boson stars has recently been constructed by introducing the nonminimal
coupling of the scalar field to the torsion scalar. An interesting feature of
these static, spherical, self-gravitating configurations of the massive complex
scalar field i... | [
{
"created": "Mon, 9 Mar 2015 14:09:38 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Aug 2015 07:38:44 GMT",
"version": "v2"
}
] | 2015-08-31 | [
[
"Horvat",
"Dubravko",
""
],
[
"Ilijic",
"Sasa",
""
],
[
"Kirin",
"Anamarija",
""
],
[
"Narancic",
"Zoran",
""
]
] | Within the framework of the extended teleparallel gravity, a new class of boson stars has recently been constructed by introducing the nonminimal coupling of the scalar field to the torsion scalar. An interesting feature of these static, spherical, self-gravitating configurations of the massive complex scalar field is ... |
1904.06325 | Avneet Singh | Avneet Singh, Maria Alessandra Papa, Vladimir Dergachev | Characterizing the sensitivity of isolated continuous gravitational wave
searches to binary orbits | 12 pages, 10 figures, 2 tables; v1: initial submission; v2: journal
submission (minor typos fixed); v3: published version; v4: typos corrected,
references updated | Phys. Rev. D 100, 024058 (2019) | 10.1103/PhysRevD.100.024058 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Broadband all-sky searches for continuous gravitational waves (CW) from
isolated neutron stars typically yield a number of significant candidates that
are discarded through hierarchical semi-coherent and coherent follow-up
searches. However, these searches target purely isolated sources and do not
take into account p... | [
{
"created": "Fri, 12 Apr 2019 17:04:53 GMT",
"version": "v1"
},
{
"created": "Sun, 21 Apr 2019 22:43:35 GMT",
"version": "v2"
},
{
"created": "Tue, 30 Jul 2019 16:47:01 GMT",
"version": "v3"
},
{
"created": "Wed, 28 Jul 2021 08:02:55 GMT",
"version": "v4"
}
] | 2021-07-29 | [
[
"Singh",
"Avneet",
""
],
[
"Papa",
"Maria Alessandra",
""
],
[
"Dergachev",
"Vladimir",
""
]
] | Broadband all-sky searches for continuous gravitational waves (CW) from isolated neutron stars typically yield a number of significant candidates that are discarded through hierarchical semi-coherent and coherent follow-up searches. However, these searches target purely isolated sources and do not take into account pos... |
0804.1053 | Thierry Barbot | Thierry Barbot (UMPA-ENSL), Fran\c{c}ois B\'eguin (LM-Orsay),
Abdelghani Zeghib (UMPA-ENSL) | Prescribing Gauss curvature of surfaces in 3-dimensional spacetimes,
Application to the Minkowski problem in the Minkowski space | null | Universit\'e de Grenoble. Annales de l'Institut Fourier 61, 2
(2011) 511-591 | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the existence of surfaces with constant or prescribed Gauss
curvature in certain Lorentzian spacetimes. We prove in particular that every
(non-elementary) 3-dimensional maximal globally hyperbolic spatially compact
spacetime with constant non-negative curvature is foliated by compact spacelike
surfaces with ... | [
{
"created": "Mon, 7 Apr 2008 15:06:03 GMT",
"version": "v1"
}
] | 2013-01-18 | [
[
"Barbot",
"Thierry",
"",
"UMPA-ENSL"
],
[
"Béguin",
"François",
"",
"LM-Orsay"
],
[
"Zeghib",
"Abdelghani",
"",
"UMPA-ENSL"
]
] | We study the existence of surfaces with constant or prescribed Gauss curvature in certain Lorentzian spacetimes. We prove in particular that every (non-elementary) 3-dimensional maximal globally hyperbolic spatially compact spacetime with constant non-negative curvature is foliated by compact spacelike surfaces with co... |
1812.09056 | Claudio Paganini | Claudio F Paganini | Proposal 42 -- A new Storyline for the Universe based on the Causal
Fermion Systems Framework | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on preliminary results from the Causal Fermion Systems framework
regarding the matter-antimatter asymmetry in the universe, I propose a novel
story line for the universe that would, if correct, resolve a number of
problems in cosmology. First and foremost, the here-presented arguments suggest
to identify cold d... | [
{
"created": "Fri, 21 Dec 2018 11:22:21 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Oct 2019 13:58:47 GMT",
"version": "v2"
}
] | 2019-10-25 | [
[
"Paganini",
"Claudio F",
""
]
] | Based on preliminary results from the Causal Fermion Systems framework regarding the matter-antimatter asymmetry in the universe, I propose a novel story line for the universe that would, if correct, resolve a number of problems in cosmology. First and foremost, the here-presented arguments suggest to identify cold dar... |
0909.3986 | Christian Boehmer | Christian G. Boehmer, Francisco S. N. Lobo | Stability of the Einstein static universe in IR modified Ho\v{r}ava
gravity | 9 pages, 5 figures; references added | Eur.Phys.J.C70:1111-1118,2010 | 10.1140/epjc/s10052-010-1503-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Horava proposed a power counting renormalizable theory for
(3+1)-dimensional quantum gravity, which reduces to Einstein gravity with a
non-vanishing cosmological constant in IR, but possesses improved UV behaviors.
In this work, we analyze the stability of the Einstein static universe by
considering linear ... | [
{
"created": "Tue, 22 Sep 2009 16:52:45 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Oct 2009 15:59:33 GMT",
"version": "v2"
}
] | 2011-02-09 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | Recently, Horava proposed a power counting renormalizable theory for (3+1)-dimensional quantum gravity, which reduces to Einstein gravity with a non-vanishing cosmological constant in IR, but possesses improved UV behaviors. In this work, we analyze the stability of the Einstein static universe by considering linear ho... |
1806.02094 | Prado Martin-Moruno | Prado Martin-Moruno, Matt Visser | Hawking-Ellis type III spacetime geometry | 22 pages, 1 figure | null | 10.1088/1361-6382/aad473 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The type III (and the "essential core" type III$_0$) stress-energy tensors in
the Hawking-Ellis (Segre-Plebanski) classification stand out in that there is
to date no known source (either classical or semi-classical) leading to type
III stress-energy. (In contrast the Hawking-Ells types I and II occur
classically, an... | [
{
"created": "Wed, 6 Jun 2018 10:06:45 GMT",
"version": "v1"
}
] | 2018-08-29 | [
[
"Martin-Moruno",
"Prado",
""
],
[
"Visser",
"Matt",
""
]
] | The type III (and the "essential core" type III$_0$) stress-energy tensors in the Hawking-Ellis (Segre-Plebanski) classification stand out in that there is to date no known source (either classical or semi-classical) leading to type III stress-energy. (In contrast the Hawking-Ells types I and II occur classically, and ... |
0708.1153 | Yuri Obukhov | Yuri N. Obukhov, Friedrich W. Hehl | Electrodynamics of moving magnetoelectric media: variational approach | Revtex, 18 pages, no figures, | Phys.Lett.A371:11-19,2007 | 10.1016/j.physleta.2007.08.026 | null | gr-qc cond-mat.other physics.class-ph | null | Recently, Feigel has predicted a new effect in magnetoelectric media. The
theoretical evaluation of this effect requires a careful analysis of a dynamics
of the moving magnetoelectric medium and, in particular, the derivation of the
energy-momentum of the electromagnetic field in such a medium. Then, one can
proceed ... | [
{
"created": "Wed, 8 Aug 2007 18:07:21 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Obukhov",
"Yuri N.",
""
],
[
"Hehl",
"Friedrich W.",
""
]
] | Recently, Feigel has predicted a new effect in magnetoelectric media. The theoretical evaluation of this effect requires a careful analysis of a dynamics of the moving magnetoelectric medium and, in particular, the derivation of the energy-momentum of the electromagnetic field in such a medium. Then, one can proceed wi... |
0901.3511 | Alberto Vecchiato | Mariateresa Crosta (1), Alberto Vecchiato (1) ((1) INAF - Astronomical
Observatory of Torino) | Physical Reference Frames and Astrometric Measurements of Star Direction
in General Relativity \\I. Stellar Aberration | 22 pages, 2 figures. Submitted to Phys. Rev. D | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The high accuracy of modern space astrometry requires the use of General
Relativity to model the propagation of stellar light through the gravitational
field encountered from a source to a given observer inside the Solar System. In
this sense relativistic astrometry is part of fundamental physics. The general
relativ... | [
{
"created": "Thu, 22 Jan 2009 16:21:13 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Feb 2009 12:51:36 GMT",
"version": "v2"
}
] | 2009-02-17 | [
[
"Crosta",
"Mariateresa",
""
],
[
"Vecchiato",
"Alberto",
""
]
] | The high accuracy of modern space astrometry requires the use of General Relativity to model the propagation of stellar light through the gravitational field encountered from a source to a given observer inside the Solar System. In this sense relativistic astrometry is part of fundamental physics. The general relativis... |
1701.02239 | Mubasher Jamil | Mustapha Azreg-A\"inou, Sebastian Bahamonde, Mubasher Jamil | Strong Gravitational Lensing by a Charged Kiselev Black Hole | 14 pages, 5 figures, accepted for publication in Eur. Phys. J. C | Eur. Phys. J. C (2017) 77: 414 | 10.1140/epjc/s10052-017-4969-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the gravitational lensing scenario where the lens is a spherically
symmetric charged black hole (BH) surrounded by quintessence matter. The null
geodesic equations in the curved background of the black hole are derived. The
resulting trajectory equation is solved analytically via perturbation and
series meth... | [
{
"created": "Thu, 5 Jan 2017 05:15:04 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Jun 2017 05:11:02 GMT",
"version": "v2"
}
] | 2017-06-21 | [
[
"Azreg-Aïnou",
"Mustapha",
""
],
[
"Bahamonde",
"Sebastian",
""
],
[
"Jamil",
"Mubasher",
""
]
] | We study the gravitational lensing scenario where the lens is a spherically symmetric charged black hole (BH) surrounded by quintessence matter. The null geodesic equations in the curved background of the black hole are derived. The resulting trajectory equation is solved analytically via perturbation and series method... |
0707.2613 | Hongwei Yu | Hongwei Yu, Wenting Zhou | Do static atoms outside a Schwarzschild black hole spontaneously excite? | 15 pages, no figures, to be published in PRD | Phys.Rev.D76:044023,2007 | 10.1103/PhysRevD.76.044023 | null | gr-qc hep-th | null | The spontaneous excitation of a two-level atom held static outside a four
dimensional Schwarzschild black hole and in interaction with a massless scalar
field in the Boulware, Unruh and Hartle-Hawking vacuum is investigated and the
contributions of the vacuum fluctuations and radiation reaction to the rate of
change ... | [
{
"created": "Wed, 18 Jul 2007 00:20:27 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Yu",
"Hongwei",
""
],
[
"Zhou",
"Wenting",
""
]
] | The spontaneous excitation of a two-level atom held static outside a four dimensional Schwarzschild black hole and in interaction with a massless scalar field in the Boulware, Unruh and Hartle-Hawking vacuum is investigated and the contributions of the vacuum fluctuations and radiation reaction to the rate of change of... |
0911.3759 | Anil Yadav dr | Anil Kumar Yadav | Thermodynamical Behaviour of Inhomogeneous Universe with Varying
$\Lambda$ in Presence of Electromagnetic Field | 19 pages, 2 figures | Int. J. Theor. Phys. 49:1140-1154, 2010 | 10.1007/s10773-010-0295-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Thermodynamical Behaviour of Inhomogeneous Universe with Varying $ \Lambda $
in Presence of Electromagnetic Field is obtained. $ F_{12} $ is the
non-vanishing component of electromagnetic field tensor. To get a deterministic
solution, it is assumed that the free gravitational field is Petrov type-II
non-degenerate.Th... | [
{
"created": "Thu, 19 Nov 2009 16:47:33 GMT",
"version": "v1"
}
] | 2010-04-22 | [
[
"Yadav",
"Anil Kumar",
""
]
] | Thermodynamical Behaviour of Inhomogeneous Universe with Varying $ \Lambda $ in Presence of Electromagnetic Field is obtained. $ F_{12} $ is the non-vanishing component of electromagnetic field tensor. To get a deterministic solution, it is assumed that the free gravitational field is Petrov type-II non-degenerate.The ... |
gr-qc/9910027 | Soumya D. Mohanty | Soumya D. Mohanty (Center for Gravitational Physics and Geometry, Penn
State) | A Robust Test for Detecting Non-Stationarity in Data from Gravitational
Wave Detectors | Final version as published | Phys.Rev.D61:122002,2000 | 10.1103/PhysRevD.61.122002 | CGPG-99/10-1 | gr-qc astro-ph physics.data-an | null | It is difficult to choose detection thresholds for tests of non-stationarity
that assume {\em a priori} a noise model if the data is statistically
uncharacterized to begin with. This is a potentially serious problem when an
automated analysis is required, as would be the case for the huge data sets
that large interfe... | [
{
"created": "Thu, 7 Oct 1999 14:58:14 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Nov 1999 18:39:06 GMT",
"version": "v2"
},
{
"created": "Wed, 14 Jun 2000 18:15:31 GMT",
"version": "v3"
}
] | 2009-12-30 | [
[
"Mohanty",
"Soumya D.",
"",
"Center for Gravitational Physics and Geometry, Penn\n State"
]
] | It is difficult to choose detection thresholds for tests of non-stationarity that assume {\em a priori} a noise model if the data is statistically uncharacterized to begin with. This is a potentially serious problem when an automated analysis is required, as would be the case for the huge data sets that large interfero... |
2109.15054 | Parth Bambhaniya | Parth Bambhaniya, Saurabh K, Kimet Jusufi, Pankaj S. Joshi | Thin accretion disk in the Simpson-Visser black-bounce and wormhole
spacetimes | 9 pages, 8 figures | Published in Phys. Rev. D, 2022 | 10.1103/PhysRevD.105.023021 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We compare the optical appearance of a thin accretion disk in the
Simpson-Visser spacetime to the Schwarzschild black hole case in this paper. We
calculate and illustrate the red-shift and observed flux distributions as
viewed by distant observers at various inclination angles. Simpson-Visser
family of metrics create... | [
{
"created": "Thu, 30 Sep 2021 12:16:58 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Jan 2022 12:13:16 GMT",
"version": "v2"
}
] | 2022-02-01 | [
[
"Bambhaniya",
"Parth",
""
],
[
"K",
"Saurabh",
""
],
[
"Jusufi",
"Kimet",
""
],
[
"Joshi",
"Pankaj S.",
""
]
] | We compare the optical appearance of a thin accretion disk in the Simpson-Visser spacetime to the Schwarzschild black hole case in this paper. We calculate and illustrate the red-shift and observed flux distributions as viewed by distant observers at various inclination angles. Simpson-Visser family of metrics create N... |
2304.14430 | Hiroki Takeda | Hiroki Takeda, Yusuke Manita, Hidetoshi Omiya, Takahiro Tanaka | Scalar polarization window in gravitational-wave signals | 18 pages | Prog Theor Exp Phys (2023) | 10.1093/ptep/ptad082 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scalar polarization modes of gravitational waves, which are often introduced
in the context of the viable extension of gravity, have been actively searched.
However, couplings of the scalar modes to the matter are strongly constrained
by the fifth-force experiments. Thus, the amplitude of scalar polarization in
the o... | [
{
"created": "Thu, 27 Apr 2023 18:00:00 GMT",
"version": "v1"
}
] | 2023-07-19 | [
[
"Takeda",
"Hiroki",
""
],
[
"Manita",
"Yusuke",
""
],
[
"Omiya",
"Hidetoshi",
""
],
[
"Tanaka",
"Takahiro",
""
]
] | Scalar polarization modes of gravitational waves, which are often introduced in the context of the viable extension of gravity, have been actively searched. However, couplings of the scalar modes to the matter are strongly constrained by the fifth-force experiments. Thus, the amplitude of scalar polarization in the obs... |
1107.5274 | Simone Speziale | Mait\'e Dupuis, Laurent Freidel, Etera R. Livine, Simone Speziale | Holomorphic Lorentzian Simplicity Constraints | 20 pages. v2: explicit counting of the holomorphic constraints added,
and minor amendments | null | 10.1063/1.3692327 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop an Hamiltonian representation of the sl(2,C) algebra on a phase
space consisting of N copies of twistors, or bi-spinors. We identify a complete
set of global invariants, and show that they generate a closed algebra
including gl(N,C) as a subalgebra. Then, we define the linear and quadratic
simplicity const... | [
{
"created": "Tue, 26 Jul 2011 17:52:57 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Feb 2012 12:54:16 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Dupuis",
"Maité",
""
],
[
"Freidel",
"Laurent",
""
],
[
"Livine",
"Etera R.",
""
],
[
"Speziale",
"Simone",
""
]
] | We develop an Hamiltonian representation of the sl(2,C) algebra on a phase space consisting of N copies of twistors, or bi-spinors. We identify a complete set of global invariants, and show that they generate a closed algebra including gl(N,C) as a subalgebra. Then, we define the linear and quadratic simplicity constra... |
1911.05561 | Fabrizio De Marchi | Fabrizio De Marchi and Gael Cascioli | Testing General Relativity in the Solar System: present and future
perspectives | 18 pages, 5 figures | null | 10.1088/1361-6382/ab6ae0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The increasing precision of spacecraft radiometric tracking data experienced
in the last number of years, coupled with the huge amount of data collected and
the long baselines of the available datasets, has made the direct observation
of Solar System dynamics possible, and in particular relativistic effects,
through ... | [
{
"created": "Wed, 13 Nov 2019 15:49:45 GMT",
"version": "v1"
}
] | 2020-06-17 | [
[
"De Marchi",
"Fabrizio",
""
],
[
"Cascioli",
"Gael",
""
]
] | The increasing precision of spacecraft radiometric tracking data experienced in the last number of years, coupled with the huge amount of data collected and the long baselines of the available datasets, has made the direct observation of Solar System dynamics possible, and in particular relativistic effects, through th... |
1002.3605 | Arturo Avelino Huerta | Arturo Avelino and Ulises Nucamendi | Exploring a matter-dominated model with bulk viscosity to drive the
accelerated expansion of the Universe | 27 pages, 14 figures and 2 tables. Related works: arXiv:0811.3253v2,
arXiv:0801.1686 and arXiv:0810.0303. The irrelevant cases of the analysis of
the model were removed. Results unchanged | JCAP 1008:009,2010 | 10.1088/1475-7516/2010/08/009 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the viability of a bulk viscous matter-dominated Universe to
explain the present accelerated expansion of the Universe. The model is
composed by a pressureless fluid with bulk viscosity of the form \zeta =
\zeta_0 + \zeta_1 * H where \zeta_0 and \zeta_1 are constants and H is the
Hubble parameter. The pres... | [
{
"created": "Thu, 18 Feb 2010 20:11:13 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Aug 2010 23:25:46 GMT",
"version": "v2"
}
] | 2010-10-25 | [
[
"Avelino",
"Arturo",
""
],
[
"Nucamendi",
"Ulises",
""
]
] | We explore the viability of a bulk viscous matter-dominated Universe to explain the present accelerated expansion of the Universe. The model is composed by a pressureless fluid with bulk viscosity of the form \zeta = \zeta_0 + \zeta_1 * H where \zeta_0 and \zeta_1 are constants and H is the Hubble parameter. The pressu... |
1712.08462 | Yuan K. Ha | Yuan K. Ha | The Horizon Energy of a Black Hole | Contributed paper to the Fourteenth Marcel Grossmann Meeting on
General Relativity, University of Rome "La Sapienza", Italy, 12 - 18 July
2015 (7 pages) arXiv admin note: text overlap with arXiv:1706.01768 | null | 10.1142/9789813226609_0324 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the energy distribution of a black hole in various spacetimes
as reckoned by a distant observer using the quasi-local energy approach. In
each case the horizon mass of a black hole: neutral, charged or rotating, is
found to be twice the irreducible mass observed at infinity. This is known as
the Horizo... | [
{
"created": "Tue, 19 Dec 2017 23:36:26 GMT",
"version": "v1"
}
] | 2019-02-27 | [
[
"Ha",
"Yuan K.",
""
]
] | We investigate the energy distribution of a black hole in various spacetimes as reckoned by a distant observer using the quasi-local energy approach. In each case the horizon mass of a black hole: neutral, charged or rotating, is found to be twice the irreducible mass observed at infinity. This is known as the Horizon ... |
2209.09328 | Angela D. V. Di Virgilio dr | Carlo Altucci, Francesco Bajardi Emilio Barchiesi, Andrea Basti,
Nicol\`o Beverini, Thomas Braun, Giorgio Carelli, Salvatore Capozziello,
Donatella Ciampini, Fabrizio Dav\`i, Gaetano De Luca, Roberto Devoti, Rita Di
Giovambattista, Giuseppe Di Somma, Giuseppe Di Stefano, Angela D.V. Di
Virgilio, Daniela Famiani... | GINGER | 21 pages, 9 figures | Math. Mech. Compl. Sys. 11 (2023) 203-234 | 10.2140/memocs.2023.11.203 | null | gr-qc physics.geo-ph | http://creativecommons.org/licenses/by/4.0/ | In this paper, we outline the scientific objectives, the experimental layout,
and the collaborations envisaged for the GINGER (Gyroscopes IN GEneral
Relativity) project. The GINGER project brings together different scientific
disciplines aiming at building an array of Ring Laser Gyroscopes (RLGs),
exploiting the Sagn... | [
{
"created": "Mon, 19 Sep 2022 20:11:23 GMT",
"version": "v1"
}
] | 2023-11-15 | [
[
"Altucci",
"Carlo",
""
],
[
"Barchiesi",
"Francesco Bajardi Emilio",
""
],
[
"Basti",
"Andrea",
""
],
[
"Beverini",
"Nicolò",
""
],
[
"Braun",
"Thomas",
""
],
[
"Carelli",
"Giorgio",
""
],
[
"Capozziello",
"Sal... | In this paper, we outline the scientific objectives, the experimental layout, and the collaborations envisaged for the GINGER (Gyroscopes IN GEneral Relativity) project. The GINGER project brings together different scientific disciplines aiming at building an array of Ring Laser Gyroscopes (RLGs), exploiting the Sagnac... |
2201.04629 | Ekim Taylan Han{\i}meli | Ekim Taylan Han{\i}meli, Isaac Tutusaus, Brahim Lamine, Alain
Blanchard | Can Dark Energy Emerge from a Varying $G$ and Spacetime Geometry? | Prepared for the proceedings of Alternative Gravities and Fundamental
Cosmology - ALTECOSMOFUN'21 (https://indico.cern.ch/event/873762/)
conference. Matches the version published at Universe Special Issue:
Alternative Gravities and Fundamental Cosmology | Universe 2022, 8, 148 | 10.3390/universe8030148 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The accelerated expansion of the universe implies the existence of an energy
contribution known as dark energy. Associated with the cosmological constant in
the standard model of cosmology, the nature of this dark energy is still
unknown. We will discuss an alternative gravity model in which this dark energy
contribu... | [
{
"created": "Wed, 12 Jan 2022 09:18:15 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Feb 2022 09:02:45 GMT",
"version": "v2"
}
] | 2022-03-01 | [
[
"Hanımeli",
"Ekim Taylan",
""
],
[
"Tutusaus",
"Isaac",
""
],
[
"Lamine",
"Brahim",
""
],
[
"Blanchard",
"Alain",
""
]
] | The accelerated expansion of the universe implies the existence of an energy contribution known as dark energy. Associated with the cosmological constant in the standard model of cosmology, the nature of this dark energy is still unknown. We will discuss an alternative gravity model in which this dark energy contributi... |
gr-qc/9506076 | null | Giampiero Esposito, Hugo A. Morales-Tecotl, Giuseppe Pollifrone | Boundary Terms for Massless Fermionic Fields | 8 pages, plain-tex, recently appearing in Foundations of Physics
Letters, volume 7, pages 303-308, year 1994 | Found.Phys.Lett. 7 (1994) 303-308 | null | DSF 93/27 | gr-qc | null | Local supersymmetry leads to boundary conditions for fermionic fields in
one-loop quantum cosmology involving the Euclidean normal to the boundary and a
pair of independent spinor fields. This paper studies the corresponding
classical properties, i.e. the classical boundary-value problem and boundary
terms in the var... | [
{
"created": "Thu, 29 Jun 1995 12:38:54 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Esposito",
"Giampiero",
""
],
[
"Morales-Tecotl",
"Hugo A.",
""
],
[
"Pollifrone",
"Giuseppe",
""
]
] | Local supersymmetry leads to boundary conditions for fermionic fields in one-loop quantum cosmology involving the Euclidean normal to the boundary and a pair of independent spinor fields. This paper studies the corresponding classical properties, i.e. the classical boundary-value problem and boundary terms in the varia... |
2005.07294 | Lior M. Burko | Lior M. Burko, Gaurav Khanna, and Subir Sabharwal | Scalar and gravitational hair for extreme Kerr black holes | 4 pages, 5 figures | Phys. Rev. D 103, 021502 (2021) | 10.1103/PhysRevD.103.L021502 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For scalar perturbations of an extreme Reissner-Nordstr{\" o}m black hole we
show numerically that the Ori pre-factor equals the Aretakis conserved charge.
We demonstrate a linear relation of a generalized Ori pre-factor -- a certain
expression obtained from the late-time expansion or the perturbation field at
finite... | [
{
"created": "Thu, 14 May 2020 23:28:46 GMT",
"version": "v1"
}
] | 2021-09-08 | [
[
"Burko",
"Lior M.",
""
],
[
"Khanna",
"Gaurav",
""
],
[
"Sabharwal",
"Subir",
""
]
] | For scalar perturbations of an extreme Reissner-Nordstr{\" o}m black hole we show numerically that the Ori pre-factor equals the Aretakis conserved charge. We demonstrate a linear relation of a generalized Ori pre-factor -- a certain expression obtained from the late-time expansion or the perturbation field at finite d... |
gr-qc/9511062 | Fintan Ryan | Fintan D. Ryan | Effect of gravitational radiation reaction on nonequatorial orbits
around a Kerr black hole | Uses REVTEX 3.0 | Phys.Rev.D53:3064-3069,1996 | 10.1103/PhysRevD.53.3064 | null | gr-qc | null | The effect of gravitational radiation reaction on orbits around a spinning
black hole is analyzed. Such orbits possess three constants of motion: $\iota$,
$e$, and $a$, which correspond, in the Newtonian limit of the orbit being an
ellipse, to the inclination angle of the orbital plane to the hole's equatorial
plane,... | [
{
"created": "Wed, 22 Nov 1995 20:21:53 GMT",
"version": "v1"
}
] | 2011-09-09 | [
[
"Ryan",
"Fintan D.",
""
]
] | The effect of gravitational radiation reaction on orbits around a spinning black hole is analyzed. Such orbits possess three constants of motion: $\iota$, $e$, and $a$, which correspond, in the Newtonian limit of the orbit being an ellipse, to the inclination angle of the orbital plane to the hole's equatorial plane, t... |
1808.03635 | Zhen Zhong | Yuyu Mo, Yu Tian, Bin Wang, Hongbao Zhang, and Zhen Zhong | Strong cosmic censorship for the massless charged scalar field in the
Reissner-Nordstrom-de Sitter spacetime | figures refined and added, references updated and added, version to
appear in Physical Review D | Phys. Rev. D 98, 124025 (2018) | 10.1103/PhysRevD.98.124025 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has recently been shown that the strong cosmic censorship conjecture can
be violated by the massless neutral scalar field in the nearly extremal
Reissner-Nordstrom-de Sitter black hole. However, the formation of such a black
hole by gravitational collapse necessitates the presence of the charged sector
on top of t... | [
{
"created": "Fri, 10 Aug 2018 17:47:21 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Dec 2018 04:35:24 GMT",
"version": "v2"
}
] | 2018-12-26 | [
[
"Mo",
"Yuyu",
""
],
[
"Tian",
"Yu",
""
],
[
"Wang",
"Bin",
""
],
[
"Zhang",
"Hongbao",
""
],
[
"Zhong",
"Zhen",
""
]
] | It has recently been shown that the strong cosmic censorship conjecture can be violated by the massless neutral scalar field in the nearly extremal Reissner-Nordstrom-de Sitter black hole. However, the formation of such a black hole by gravitational collapse necessitates the presence of the charged sector on top of the... |
2111.00542 | Vincenzo Ventriglia | Vincenzo Ventriglia | Gravitational self-force and conservative effects: a testing ground for
theories of gravity | 10 pages, 3 figures | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Considering extreme-mass-ratio inspirals along with the conservative dynamics
of gravitational self-force, we compare viable theories of gravity. In
particular, by examining a Schwarzschild background we analyse the
self-force-induced corrections to gauge-invariant benchmarks given by the
orbital frequency at the ISC... | [
{
"created": "Sun, 31 Oct 2021 16:46:33 GMT",
"version": "v1"
}
] | 2021-11-08 | [
[
"Ventriglia",
"Vincenzo",
""
]
] | Considering extreme-mass-ratio inspirals along with the conservative dynamics of gravitational self-force, we compare viable theories of gravity. In particular, by examining a Schwarzschild background we analyse the self-force-induced corrections to gauge-invariant benchmarks given by the orbital frequency at the ISCO ... |
1208.3034 | Aaron Zimmerman | Fan Zhang, Aaron Zimmerman, David A. Nichols, Yanbei Chen, Geoffrey
Lovelace, Keith D. Matthews, Robert Owen, Kip S. Thorne | Visualizing Spacetime Curvature via Frame-Drag Vortexes and Tidal
Tendexes II. Stationary Black Holes | 19 pages, 7 figures, v2: Changed to reflect published version
(changes made to color scales in Figs 5, 6, and 7 for consistent
conventions). v3: Fixed Ref 4 | Phys. Rev. D 86, 084049 (2012) | 10.1103/PhysRevD.86.084049 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | When one splits spacetime into space plus time, the Weyl curvature tensor
(which equals the Riemann tensor in vacuum) splits into two spatial, symmetric,
traceless tensors: the tidal field $E$, which produces tidal forces, and the
frame-drag field $B$, which produces differential frame dragging. In recent
papers, we ... | [
{
"created": "Wed, 15 Aug 2012 05:53:06 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Dec 2012 22:05:55 GMT",
"version": "v2"
},
{
"created": "Thu, 31 Jan 2013 16:32:10 GMT",
"version": "v3"
}
] | 2013-02-01 | [
[
"Zhang",
"Fan",
""
],
[
"Zimmerman",
"Aaron",
""
],
[
"Nichols",
"David A.",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Lovelace",
"Geoffrey",
""
],
[
"Matthews",
"Keith D.",
""
],
[
"Owen",
"Robert",
""
],
[
... | When one splits spacetime into space plus time, the Weyl curvature tensor (which equals the Riemann tensor in vacuum) splits into two spatial, symmetric, traceless tensors: the tidal field $E$, which produces tidal forces, and the frame-drag field $B$, which produces differential frame dragging. In recent papers, we an... |
gr-qc/0511012 | Harry I. Ringermacher | Harry I. Ringermacher, Lawrence R. Mead | Induced matter: Curved N-manifolds encapsulated in Riemann-flat N+1
dimensional space | 3 pages | J.Math.Phys. 46 (2005) 102501 | 10.1063/1.2042968 | null | gr-qc | null | Liko and Wesson have recently introduced a new 5-dimensional induced matter
solution of the Einstein equations, a negative curvature Robertson-Walker space
embedded in a Riemann flat 5-dimensional manifold. We show that this solution
is a special case of a more general theorem prescribing the structure of
certain N+1... | [
{
"created": "Wed, 2 Nov 2005 21:36:35 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Ringermacher",
"Harry I.",
""
],
[
"Mead",
"Lawrence R.",
""
]
] | Liko and Wesson have recently introduced a new 5-dimensional induced matter solution of the Einstein equations, a negative curvature Robertson-Walker space embedded in a Riemann flat 5-dimensional manifold. We show that this solution is a special case of a more general theorem prescribing the structure of certain N+1-d... |
1310.2160 | Pedro da Cunha Ferreira | Pedro C. Ferreira, Diego Pav\'on, and Joel C. Carvalho | On detecting interactions in the dark sector with H(z) data | 10 pages | Phys. Rev. D 88, 083503 (2013) | 10.1103/PhysRevD.88.083503 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An interesting approach to the cosmological coincidence problem is to allow
dark matter and dark energy interact with each other also nongravitationally.
We consider two general Ans\"{a}tze for such an interaction and appraise their
ability to address the coincidence problem. We determine the average accuracy
require... | [
{
"created": "Tue, 8 Oct 2013 14:47:38 GMT",
"version": "v1"
}
] | 2013-10-10 | [
[
"Ferreira",
"Pedro C.",
""
],
[
"Pavón",
"Diego",
""
],
[
"Carvalho",
"Joel C.",
""
]
] | An interesting approach to the cosmological coincidence problem is to allow dark matter and dark energy interact with each other also nongravitationally. We consider two general Ans\"{a}tze for such an interaction and appraise their ability to address the coincidence problem. We determine the average accuracy required ... |
gr-qc/9903020 | Alena Pravdova | J. Bicak, A. Pravdova | Axisymmetric electrovacuum spacetimes with a translational Killing
vector at null infinity | 15 pages, RevTeX, submitted to Class. Quantum Grav | Class.Quant.Grav. 16 (1999) 2023-2041 | 10.1088/0264-9381/16/6/329 | null | gr-qc | null | By using the Bondi-Sachs-van der Burg formalism we analyze the asymptotic
properties at null infinity of axisymmetric electrovacuum spacetimes with a
translational Killing vector and, in general, an infinite ``cosmic string''
(represented by a conical singularity) along the axis. Such spacetimes admit
only a local nu... | [
{
"created": "Fri, 5 Mar 1999 13:33:03 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Bicak",
"J.",
""
],
[
"Pravdova",
"A.",
""
]
] | By using the Bondi-Sachs-van der Burg formalism we analyze the asymptotic properties at null infinity of axisymmetric electrovacuum spacetimes with a translational Killing vector and, in general, an infinite ``cosmic string'' (represented by a conical singularity) along the axis. Such spacetimes admit only a local null... |
1512.06472 | Chengyong Zhang | Cheng-Yong Zhang, Shao-Jun Zhang, De-Cheng Zou, Bin Wang | Charged scalar gravitational collapse in de Sitter spacetime | 16pages, 8 figures. Accepted by PRD | Phys. Rev. D 93, 064036 (2016) | 10.1103/PhysRevD.93.064036 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the charged scalar collapse in de Sitter spacetimes. With the
electric charge, there is one more competitor to join the competition of
dynamics in the gravitational collapse. We find that two factors can influence
the electric charge. If we just adjust the charge conjugation, the electric
charge effect is al... | [
{
"created": "Mon, 21 Dec 2015 02:19:43 GMT",
"version": "v1"
},
{
"created": "Sun, 31 Jan 2016 17:42:58 GMT",
"version": "v2"
},
{
"created": "Sat, 27 Feb 2016 09:27:52 GMT",
"version": "v3"
}
] | 2016-08-22 | [
[
"Zhang",
"Cheng-Yong",
""
],
[
"Zhang",
"Shao-Jun",
""
],
[
"Zou",
"De-Cheng",
""
],
[
"Wang",
"Bin",
""
]
] | We study the charged scalar collapse in de Sitter spacetimes. With the electric charge, there is one more competitor to join the competition of dynamics in the gravitational collapse. We find that two factors can influence the electric charge. If we just adjust the charge conjugation, the electric charge effect is alwa... |
2407.12914 | Chen Yuan | Chong-Zhi Li, Chen Yuan and Qing-guo Huang | Gravitational Waves Induced by Scalar Perturbations with a Broken
Power-law Peak | 18 pages, 6 figures, first version | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose an analytical approximation for the energy spectrum of the scalar
induced gravitational waves (SIGWs) generated by a broken power-law power
spectrum, and find that both the asymptotic power-law tails and the
intermediate peak contribute distinct features to the SIGW spectrum. Moreover,
the broken power-law... | [
{
"created": "Wed, 17 Jul 2024 18:00:02 GMT",
"version": "v1"
}
] | 2024-07-19 | [
[
"Li",
"Chong-Zhi",
""
],
[
"Yuan",
"Chen",
""
],
[
"Huang",
"Qing-guo",
""
]
] | We propose an analytical approximation for the energy spectrum of the scalar induced gravitational waves (SIGWs) generated by a broken power-law power spectrum, and find that both the asymptotic power-law tails and the intermediate peak contribute distinct features to the SIGW spectrum. Moreover, the broken power-law p... |
0906.3826 | Joel Saavedra | Sergio del Campo, Ramon Herrera, Pedro Labrana and Joel Saavedra | Closed inflationary universe in Patch Cosmology | 21 pages, 4 figures. Accepted by Annals of Physics | Annals Phys.324:1823-1836,2009 | 10.1016/j.aop.2009.06.003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we study closed inflationary universe models using the
Gauss-Bonnet Brane. We determine and characterize the existence of a universe
with $\Omega > 1$, with an appropriate period of inflation. We have found that
this model is less restrictive in comparison with the standard approach where a
scalar fie... | [
{
"created": "Sat, 20 Jun 2009 20:28:54 GMT",
"version": "v1"
}
] | 2010-04-30 | [
[
"del Campo",
"Sergio",
""
],
[
"Herrera",
"Ramon",
""
],
[
"Labrana",
"Pedro",
""
],
[
"Saavedra",
"Joel",
""
]
] | In this article we study closed inflationary universe models using the Gauss-Bonnet Brane. We determine and characterize the existence of a universe with $\Omega > 1$, with an appropriate period of inflation. We have found that this model is less restrictive in comparison with the standard approach where a scalar field... |
0704.1733 | Orfeu Bertolami | Orfeu Bertolami, Christian G. Boehmer, Tiberiu Harko, Francisco S.N.
Lobo | Extra force in $f(R)$ modified theories of gravity | Revtex4 file, 5 pages. Version to appear in Physical Review D | Phys.Rev.D75:104016,2007 | 10.1103/PhysRevD.75.104016 | null | gr-qc astro-ph hep-th | null | The equation of motion for test particles in $f(R)$ modified theories of
gravity is derived. By considering an explicit coupling between an arbitrary
function of the scalar curvature, $R$, and the Lagrangian density of matter, it
is shown that an extra force arises. This extra force is orthogonal to the
four-velocity... | [
{
"created": "Fri, 13 Apr 2007 11:49:59 GMT",
"version": "v1"
},
{
"created": "Thu, 24 May 2007 12:03:50 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Bertolami",
"Orfeu",
""
],
[
"Boehmer",
"Christian G.",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | The equation of motion for test particles in $f(R)$ modified theories of gravity is derived. By considering an explicit coupling between an arbitrary function of the scalar curvature, $R$, and the Lagrangian density of matter, it is shown that an extra force arises. This extra force is orthogonal to the four-velocity a... |
2208.05778 | Dr. Goutam Manna | Saibal Ray, Arijit Panda, Bivash Majumder, Md. Rabiul Islam and Goutam
Manna | Collapsing scenario for the k-essence emergent generalised Vaidya
spacetime in the context of massive gravity's rainbow | 20 pages, 5 figures, to be published in Chinese Physics C | null | 10.1088/1674-1137/ac8868 | null | gr-qc hep-th | http://creativecommons.org/licenses/by-sa/4.0/ | In this paper, we study the collapsing scenario for the k-essence emergent
Vaidya spacetime in the context of massive gravity's rainbow. For this study,
we consider that the background metric is Vaidya spacetime in massive gravity's
rainbow. We show that the k-essence emergent gravity metric resembles closely
to the ... | [
{
"created": "Wed, 10 Aug 2022 12:51:08 GMT",
"version": "v1"
}
] | 2022-08-12 | [
[
"Ray",
"Saibal",
""
],
[
"Panda",
"Arijit",
""
],
[
"Majumder",
"Bivash",
""
],
[
"Islam",
"Md. Rabiul",
""
],
[
"Manna",
"Goutam",
""
]
] | In this paper, we study the collapsing scenario for the k-essence emergent Vaidya spacetime in the context of massive gravity's rainbow. For this study, we consider that the background metric is Vaidya spacetime in massive gravity's rainbow. We show that the k-essence emergent gravity metric resembles closely to the ne... |
2207.00059 | Waleed El Hanafy | Adel Awad, Alexey Golovnev, Mar\'ia-Jos\'e Guzm\'an, and Waleed El
Hanafy | Revisiting diagonal tetrads: New Black Hole solutions in $f(T)$ gravity | pdfLaTeX, 21 pages, one figure. Submitted to EPJC | Eur. Phys. J. C (2022) 82:972 | 10.1140/epjc/s10052-022-10939-0 | null | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We study various forms of diagonal tetrads that accommodate Black Hole
solutions in $f(T)$ gravity with certain symmetries. As is well-known, vacuum
spherically symmetric diagonal tetrads lead to rather boring cases of constant
torsion scalars. We extend this statement to other possible horizon topologies,
namely, sp... | [
{
"created": "Thu, 30 Jun 2022 18:49:44 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Oct 2022 15:54:15 GMT",
"version": "v2"
}
] | 2022-11-08 | [
[
"Awad",
"Adel",
""
],
[
"Golovnev",
"Alexey",
""
],
[
"Guzmán",
"María-José",
""
],
[
"Hanafy",
"Waleed El",
""
]
] | We study various forms of diagonal tetrads that accommodate Black Hole solutions in $f(T)$ gravity with certain symmetries. As is well-known, vacuum spherically symmetric diagonal tetrads lead to rather boring cases of constant torsion scalars. We extend this statement to other possible horizon topologies, namely, sphe... |
0905.0896 | Ricardo E. Gamboa Saravi | Ricardo E. Gamboa Saravi | The Gravitational Field of a Plane Slab | 24 pages, 5 figures, accepted for publication in the International
Journal of Modern Physics A | Int.J.Mod.Phys.A24:5381-5405,2009 | 10.1142/S0217751X09046096 | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | We discuss the exact solution of Einstein's equation corresponding to a
static and plane symmetric distribution of matter with constant positive
density located below $z=0$ matched to vacuum solutions.
| [
{
"created": "Thu, 7 May 2009 14:38:03 GMT",
"version": "v1"
}
] | 2009-11-30 | [
[
"Saravi",
"Ricardo E. Gamboa",
""
]
] | We discuss the exact solution of Einstein's equation corresponding to a static and plane symmetric distribution of matter with constant positive density located below $z=0$ matched to vacuum solutions. |
1207.5833 | Antonios Tsokaros A. | Antonios Tsokaros, Koji Uryu | Binary black hole circular orbits computed with COCAL | 12 pages, 3 figures. Presented at the Tercentenary of the
Laplace-Runge-Lenz vector conference. This paper is dedicated to Peter Leach
on the occasion of his seventieth birthday | Journal of Engineering Mathematics 82, 1, 133-141 (2013) | 10.1007/s10665-012-9585-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we present our first results of binary black hole circular
orbits using {\sc cocal}, the Compact Object CALculator. Using the 3+1
decomposition five equations are being solved under the assumptions of
conformal flatness and maximal slicing. Excision is used and the appropriate
apparent horizon boundary c... | [
{
"created": "Tue, 24 Jul 2012 21:39:59 GMT",
"version": "v1"
}
] | 2016-03-04 | [
[
"Tsokaros",
"Antonios",
""
],
[
"Uryu",
"Koji",
""
]
] | In this work we present our first results of binary black hole circular orbits using {\sc cocal}, the Compact Object CALculator. Using the 3+1 decomposition five equations are being solved under the assumptions of conformal flatness and maximal slicing. Excision is used and the appropriate apparent horizon boundary con... |
2309.04572 | Delilah Gates | Delilah E. A. Gates and Shahar Hadar | Signatures of particle collisions near extreme black holes | 11 pages, 4 figures | null | null | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Finite-energy particles in free fall can collide with diverging
center-of-mass energy near rapidly rotating black holes. What are the most
salient observational signatures of this remarkable geometric effect? Here we
revisit the problem from the standpoint of the near-horizon extreme Kerr
geometry, where these collis... | [
{
"created": "Fri, 8 Sep 2023 20:04:25 GMT",
"version": "v1"
}
] | 2023-09-12 | [
[
"Gates",
"Delilah E. A.",
""
],
[
"Hadar",
"Shahar",
""
]
] | Finite-energy particles in free fall can collide with diverging center-of-mass energy near rapidly rotating black holes. What are the most salient observational signatures of this remarkable geometric effect? Here we revisit the problem from the standpoint of the near-horizon extreme Kerr geometry, where these collisio... |
gr-qc/9612054 | Michael P. Ryan | A. A. Minzoni, Marcos Rosenbaum, Michael P. Ryan, Jr | Variational Approach to Gaussian Approximate Coherent States: Quantum
Mechanics and Minisuperspace Field Theory | 26 pages, Plain TeX, no figures | Phys.Rev. D56 (1997) 2144-2154 | 10.1103/PhysRevD.56.2144 | null | gr-qc hep-th quant-ph | null | This paper has a dual purpose. One aim is to study the evolution of coherent
states in ordinary quantum mechanics. This is done by means of a Hamiltonian
approach to the evolution of the parameters that define the state. The
stability of the solutions is studied. The second aim is to apply these
techniques to the stu... | [
{
"created": "Wed, 18 Dec 1996 20:17:05 GMT",
"version": "v1"
}
] | 2012-08-27 | [
[
"Minzoni",
"A. A.",
""
],
[
"Rosenbaum",
"Marcos",
""
],
[
"Ryan,",
"Michael P.",
"Jr"
]
] | This paper has a dual purpose. One aim is to study the evolution of coherent states in ordinary quantum mechanics. This is done by means of a Hamiltonian approach to the evolution of the parameters that define the state. The stability of the solutions is studied. The second aim is to apply these techniques to the study... |
gr-qc/9909080 | Shane L. Larson | Shane L. Larson, William A. Hiscock and Ronald W. Hellings | Sensitivity curves for spaceborne gravitational wave interferometers | 27 pages + 5 figures, REVTeX, accepted for publication in Phys Rev D;
Update reflects referees comments, figure 3 clarified, figure 5 corrected for
LISA baseline | Phys.Rev.D62:062001,2000 | 10.1103/PhysRevD.62.062001 | MSUPHY99.04 | gr-qc astro-ph | null | To determine whether particular sources of gravitational radiation will be
detectable by a specific gravitational wave detector, it is necessary to know
the sensitivity limits of the instrument. These instrumental sensitivities are
often depicted (after averaging over source position and polarization) by
graphing the... | [
{
"created": "Sun, 26 Sep 1999 20:38:47 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Jan 2000 22:40:20 GMT",
"version": "v2"
}
] | 2009-12-30 | [
[
"Larson",
"Shane L.",
""
],
[
"Hiscock",
"William A.",
""
],
[
"Hellings",
"Ronald W.",
""
]
] | To determine whether particular sources of gravitational radiation will be detectable by a specific gravitational wave detector, it is necessary to know the sensitivity limits of the instrument. These instrumental sensitivities are often depicted (after averaging over source position and polarization) by graphing the m... |
2307.02580 | Sanjib Katuwal | Sanjib Katuwal | Quantum Gravitational Corrections to Electromagnetism And Backreaction | PhD thesis, 112 pages, 33 figures and 1 table | null | null | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | This dissertation examines the impact of quantum gravity on electromagnetism
and its backreaction, using perturbative general relativity as an effective
field theory. Our analysis involves quantum-correcting Maxwell's equations to
obtain a gauge-independent, real, and causal effective field equation that
describes qu... | [
{
"created": "Wed, 5 Jul 2023 18:26:06 GMT",
"version": "v1"
}
] | 2023-07-07 | [
[
"Katuwal",
"Sanjib",
""
]
] | This dissertation examines the impact of quantum gravity on electromagnetism and its backreaction, using perturbative general relativity as an effective field theory. Our analysis involves quantum-correcting Maxwell's equations to obtain a gauge-independent, real, and causal effective field equation that describes quan... |
2403.00021 | Kayoomars Karami | Milad Solbi and Kayoomars Karami | Primordial black holes in non-minimal coupling Gauss-Bonnet inflation in
light of the NANOGrav 15 year data | 37 pages, 10 figures, 5 tables | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Here, we investigate the formation of primordial black holes (PBHs) in
non-minimal coupling Gauss-Bonnet inflationary model in the presence of
power-law potentials. We employ a two part coupling function to enhance
primordial curvatures at small scales as well as satisfy Planck measurements at
the CMB scale. Moreover... | [
{
"created": "Wed, 28 Feb 2024 09:40:41 GMT",
"version": "v1"
}
] | 2024-03-04 | [
[
"Solbi",
"Milad",
""
],
[
"Karami",
"Kayoomars",
""
]
] | Here, we investigate the formation of primordial black holes (PBHs) in non-minimal coupling Gauss-Bonnet inflationary model in the presence of power-law potentials. We employ a two part coupling function to enhance primordial curvatures at small scales as well as satisfy Planck measurements at the CMB scale. Moreover, ... |
1107.1840 | Jinn-Ouk Gong | Jinn-Ouk Gong, Jai-chan Hwang, Wan Il Park, Misao Sasaki and Yong-Seon
Song | Conformal invariance of curvature perturbation | 15 pages, 1 figure | null | 10.1088/1475-7516/2011/09/023 | CERN-PH-TH/2011-123, YITP-11-57 | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that in the single component situation all perturbation variables in
the comoving gauge are conformally invariant to all perturbation orders.
Generally we identify a special time slicing, the uniform-conformal
transformation slicing, where all perturbations are again conformally invariant
to all perturbation ... | [
{
"created": "Sun, 10 Jul 2011 07:22:14 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Gong",
"Jinn-Ouk",
""
],
[
"Hwang",
"Jai-chan",
""
],
[
"Park",
"Wan Il",
""
],
[
"Sasaki",
"Misao",
""
],
[
"Song",
"Yong-Seon",
""
]
] | We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the uniform-conformal transformation slicing, where all perturbations are again conformally invariant to all perturbation or... |
1706.00160 | Vee-Liem Saw | Vee-Liem Saw | Asymptotically simple spacetimes and mass loss due to gravitational
waves | 41 pages, 2 figures | International Journal of Modern Physics D, Vol. 26, No. 16 (2017),
1730027 | 10.1142/S0218271817300270 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cosmological constant $\Lambda$ used to be a freedom in Einstein's theory
of general relativity, where one had a proclivity to set it to zero purely for
convenience. The signs of $\Lambda$ or $\Lambda$ being zero would describe
universes with different properties. For instance, the conformal structure of
spacetim... | [
{
"created": "Thu, 1 Jun 2017 04:16:19 GMT",
"version": "v1"
}
] | 2017-08-22 | [
[
"Saw",
"Vee-Liem",
""
]
] | The cosmological constant $\Lambda$ used to be a freedom in Einstein's theory of general relativity, where one had a proclivity to set it to zero purely for convenience. The signs of $\Lambda$ or $\Lambda$ being zero would describe universes with different properties. For instance, the conformal structure of spacetime ... |
gr-qc/0612023 | Edwin J. Son | Wontae Kim, Edwin J. Son | Future singularity free accelerating expansion with the modified Poisson
brackets | 13 pages, 2 figures; v2. to appear in Phys. Rev. D | Phys.Rev.D75:024025,2007 | 10.1103/PhysRevD.75.024025 | null | gr-qc | null | We show that the second accelerating expansion of the universe appears
smoothly from the decelerating universe remarkably after the initial inflation
in the two-dimensional soluble semi-classical dilaton gravity along with the
modified Poisson brackets of noncommutativity between the relevant fields.
However, the ord... | [
{
"created": "Mon, 4 Dec 2006 03:52:53 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jan 2007 01:11:56 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Kim",
"Wontae",
""
],
[
"Son",
"Edwin J.",
""
]
] | We show that the second accelerating expansion of the universe appears smoothly from the decelerating universe remarkably after the initial inflation in the two-dimensional soluble semi-classical dilaton gravity along with the modified Poisson brackets of noncommutativity between the relevant fields. However, the ordin... |
1506.00725 | Jonathan Ziprick | Viqar Husain, Jonathan Ziprick | 3D gravity with dust: classical and quantum theory | 14 pages | Phys. Rev. D 91, 124074 (2015) | 10.1103/PhysRevD.91.124074 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Einstein gravity and dust system in three spacetime dimensions
as an example of a non-perturbative quantum gravity model with local degrees of
freedom. We derive the Hamiltonian theory in the dust time gauge and show that
it has a rich class of exact solutions. These include the
Ba\~nados-Teitelboim-Zane... | [
{
"created": "Tue, 2 Jun 2015 02:08:10 GMT",
"version": "v1"
}
] | 2015-07-08 | [
[
"Husain",
"Viqar",
""
],
[
"Ziprick",
"Jonathan",
""
]
] | We study the Einstein gravity and dust system in three spacetime dimensions as an example of a non-perturbative quantum gravity model with local degrees of freedom. We derive the Hamiltonian theory in the dust time gauge and show that it has a rich class of exact solutions. These include the Ba\~nados-Teitelboim-Zanell... |
0802.3341 | Jennifer Seiler | Jennifer Seiler, Bela Szilagyi, Denis Pollney, and Luciano Rezzolla | Constraint-preserving boundary treatment for a harmonic formulation of
the Einstein equations | 18 pages, 7 figures, accepted in CQG | Class.Quant.Grav.25:175020,2008 | 10.1088/0264-9381/25/17/175020 | AEI-2008-007 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a set of well-posed constraint-preserving boundary conditions for
a first-order in time, second-order in space, harmonic formulation of the
Einstein equations. The boundary conditions are tested using robust stability,
linear and nonlinear waves, and are found to be both less reflective and
constraint pres... | [
{
"created": "Fri, 22 Feb 2008 16:00:35 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Jul 2008 17:55:49 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Seiler",
"Jennifer",
""
],
[
"Szilagyi",
"Bela",
""
],
[
"Pollney",
"Denis",
""
],
[
"Rezzolla",
"Luciano",
""
]
] | We present a set of well-posed constraint-preserving boundary conditions for a first-order in time, second-order in space, harmonic formulation of the Einstein equations. The boundary conditions are tested using robust stability, linear and nonlinear waves, and are found to be both less reflective and constraint preser... |
gr-qc/0609088 | Petarpa Boonserm | Petarpa Boonserm (Victoria University of Wellington), Matt Visser
(Victoria University of Wellington), and Silke Weinfurtner (Victoria
University of Wellington) | Solution generating theorems for perfect fluid spheres | 8 pages, no figures, to appear in the proceedings of the NEB XII
Conference (Recent Developments in Gravity), 29 June - 2 July, 2006, Napflio,
Greece | J.Phys.Conf.Ser.68:012055,2007 | 10.1088/1742-6596/68/1/012055 | null | gr-qc | null | The first static spherically symmetric perfect fluid solution with constant
density was found by Schwarzschild in 1918. Generically, perfect fluid spheres
are interesting because they are first approximations to any attempt at
building a realistic model for a general relativistic star. Over the past 90
years a confus... | [
{
"created": "Wed, 20 Sep 2006 23:43:49 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Boonserm",
"Petarpa",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
],
[
"Weinfurtner",
"Silke",
"",
"Victoria\n University of Wellington"
]
] | The first static spherically symmetric perfect fluid solution with constant density was found by Schwarzschild in 1918. Generically, perfect fluid spheres are interesting because they are first approximations to any attempt at building a realistic model for a general relativistic star. Over the past 90 years a confusin... |
2003.02862 | Jose Luis Bl\'azquez-Salcedo | Jose Luis Bl\'azquez-Salcedo, Daniela D. Doneva, Sarah Kahlen, Jutta
Kunz, Petya Nedkova, Stoytcho S. Yazadjiev | Axial perturbations of the scalarized Einstein-Gauss-Bonnet black holes | 17 pages, 6 figures | Phys. Rev. D 101, 104006 (2020) | 10.1103/PhysRevD.101.104006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the axial perturbations of spontaneously scalarized black holes in
Einstein-Gauss-Bonnet (EGB) theories. We consider the nodeless solutions of the
fundamental branch of the model studied in [1], which possesses a region of
radially stable configurations, as shown in [2]. Here we show that almost all
of the r... | [
{
"created": "Thu, 5 Mar 2020 19:00:55 GMT",
"version": "v1"
}
] | 2020-05-13 | [
[
"Blázquez-Salcedo",
"Jose Luis",
""
],
[
"Doneva",
"Daniela D.",
""
],
[
"Kahlen",
"Sarah",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Nedkova",
"Petya",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
]
] | We study the axial perturbations of spontaneously scalarized black holes in Einstein-Gauss-Bonnet (EGB) theories. We consider the nodeless solutions of the fundamental branch of the model studied in [1], which possesses a region of radially stable configurations, as shown in [2]. Here we show that almost all of the rad... |
gr-qc/0407111 | I. B. Khriplovich | I.B. Khriplovich | Quasinormal modes, quantized black holes, and correspondence principle | 2 pages; a new argument added | Int.J.Mod.Phys. D14 (2005) 181 | 10.1142/S0218271805005980 | null | gr-qc hep-th | null | Contrary to the wide-spread belief, the correspondence principle does not
dictate any relation between the asymptotics of quasinormal modes and the
spectrum of quantized black holes. Moreover, this belief is in conflict with
simple physical arguments.
| [
{
"created": "Thu, 29 Jul 2004 07:22:37 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Sep 2004 04:56:37 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Khriplovich",
"I. B.",
""
]
] | Contrary to the wide-spread belief, the correspondence principle does not dictate any relation between the asymptotics of quasinormal modes and the spectrum of quantized black holes. Moreover, this belief is in conflict with simple physical arguments. |
gr-qc/9605027 | Kostas Kokkotas | B.R. Iyer (Bangalore) and K.D. Kokkotas (Jena) | Workshop on gravitational waves | 18 pages, kluwer.sty, no figures | in Gravitation and Cosmology, Eds S.Dhurandhar and T.Padmanabhan,
Kluwer Academic Publishers (1997), page 261 | 10.1007/978-94-011-5812-1_18 | null | gr-qc | null | In this article we summarise the proceedings of the Workshop on Gravitational
Waves held during ICGC-95. In the first part we present the discussions on 3PN
calculations (L. Blanchet, P. Jaranowski), black hole perturbation theory (M.
Sasaki, J. Pullin), numerical relativity (E. Seidel), data analysis (B.S.
Sathyapra... | [
{
"created": "Wed, 15 May 1996 06:50:44 GMT",
"version": "v1"
}
] | 2022-03-09 | [
[
"Iyer",
"B. R.",
"",
"Bangalore"
],
[
"Kokkotas",
"K. D.",
"",
"Jena"
]
] | In this article we summarise the proceedings of the Workshop on Gravitational Waves held during ICGC-95. In the first part we present the discussions on 3PN calculations (L. Blanchet, P. Jaranowski), black hole perturbation theory (M. Sasaki, J. Pullin), numerical relativity (E. Seidel), data analysis (B.S. Sathyapraka... |
1004.0882 | Gerasimos Rigopoulos | Tomislav Prokopec and Gerasimos Rigopoulos | Path Integral for Inflationary Perturbations | (v1) 28 pages, no figures; (v2) 29 pages, minor changes, matches
published version | Phys.Rev.D82:023529,2010 | 10.1103/PhysRevD.82.023529 | HIP-2010-12/TH, ITP-UU-10-12, SPIN-10-10 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quantum theory of cosmological perturbations in single field inflation is
formulated in terms of a path integral. Starting from a canonical formulation,
we show how the free propagators can be obtained from the well known
gauge-invariant quadratic action for scalar and tensor perturbations, and
determine the inte... | [
{
"created": "Tue, 6 Apr 2010 16:04:26 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Dec 2010 12:48:14 GMT",
"version": "v2"
}
] | 2010-12-14 | [
[
"Prokopec",
"Tomislav",
""
],
[
"Rigopoulos",
"Gerasimos",
""
]
] | The quantum theory of cosmological perturbations in single field inflation is formulated in terms of a path integral. Starting from a canonical formulation, we show how the free propagators can be obtained from the well known gauge-invariant quadratic action for scalar and tensor perturbations, and determine the intera... |
gr-qc/0407078 | Gregory B. Cook | Gregory B. Cook, Harald P. Pfeiffer | Excision boundary conditions for black hole initial data | 23 pages, 23 figures, revtex4, corrected typos, added reference,
minor content changes including additional post-Newtonian comparison. Version
accepted by PRD | Phys.Rev. D70 (2004) 104016 | 10.1103/PhysRevD.70.104016 | null | gr-qc | null | We define and extensively test a set of boundary conditions that can be
applied at black hole excision surfaces when the Hamiltonian and momentum
constraints of general relativity are solved within the conformal thin-sandwich
formalism. These boundary conditions have been designed to result in black
holes that are in... | [
{
"created": "Wed, 21 Jul 2004 19:34:41 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Jul 2004 15:49:41 GMT",
"version": "v2"
},
{
"created": "Mon, 20 Sep 2004 14:24:14 GMT",
"version": "v3"
},
{
"created": "Fri, 1 Apr 2005 19:53:58 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Cook",
"Gregory B.",
""
],
[
"Pfeiffer",
"Harald P.",
""
]
] | We define and extensively test a set of boundary conditions that can be applied at black hole excision surfaces when the Hamiltonian and momentum constraints of general relativity are solved within the conformal thin-sandwich formalism. These boundary conditions have been designed to result in black holes that are in q... |
1709.06118 | Carlos A. R. Herdeiro | Pedro V. P. Cunha, Jos\'e A. Font, Carlos Herdeiro, Eugen Radu,
Nicolas Sanchis-Gual, Miguel Zilh\~ao | Lensing and dynamics of ultra-compact bosonic stars | 13 pages, 9 figures | Phys. Rev. D 96, 104040 (2017) | 10.1103/PhysRevD.96.104040 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spherically symmetric bosonic stars are one of the few examples of
gravitating solitons that are known to form dynamically, via a classical
process of (incomplete) gravitational collapse. As stationary solutions of the
Einstein--Klein-Gordon or the Einstein--Proca theory, bosonic stars may also
become sufficiently co... | [
{
"created": "Mon, 18 Sep 2017 18:35:39 GMT",
"version": "v1"
}
] | 2017-11-29 | [
[
"Cunha",
"Pedro V. P.",
""
],
[
"Font",
"José A.",
""
],
[
"Herdeiro",
"Carlos",
""
],
[
"Radu",
"Eugen",
""
],
[
"Sanchis-Gual",
"Nicolas",
""
],
[
"Zilhão",
"Miguel",
""
]
] | Spherically symmetric bosonic stars are one of the few examples of gravitating solitons that are known to form dynamically, via a classical process of (incomplete) gravitational collapse. As stationary solutions of the Einstein--Klein-Gordon or the Einstein--Proca theory, bosonic stars may also become sufficiently comp... |
gr-qc/0405045 | Bruce Allen | Bruce Allen | A chi-squared time-frequency discriminator for gravitational wave
detection | 18 pages, five figures, RevTex4 | Phys.Rev.D71:062001,2005 | 10.1103/PhysRevD.71.062001 | null | gr-qc | null | Searches for known waveforms in gravitational wave detector data are often
done using matched filtering. When used on real instrumental data, matched
filtering often does not perform as well as might be expected, because
non-stationary and non-Gaussian detector noise produces large spurious filter
outputs (events). T... | [
{
"created": "Fri, 7 May 2004 21:10:42 GMT",
"version": "v1"
},
{
"created": "Fri, 28 May 2004 18:32:40 GMT",
"version": "v2"
}
] | 2011-07-18 | [
[
"Allen",
"Bruce",
""
]
] | Searches for known waveforms in gravitational wave detector data are often done using matched filtering. When used on real instrumental data, matched filtering often does not perform as well as might be expected, because non-stationary and non-Gaussian detector noise produces large spurious filter outputs (events). Thi... |
1910.08831 | Scott Melville | Anne-Christine Davis and Scott Melville | Novel Screening with Two Bodies: Summing the ladder in disformal
scalar-tensor theories | 42 pages, 6 figures, 1 appendix | JCAP 09 (2020) 013 | 10.1088/1475-7516/2020/09/013 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | When augmenting our cosmological models or gravitational theories with an
additional light scalar field, any coupling between matter and this scalar can
affect the orbital motion of binary systems. Ordinarily, the new force mediated
by the scalar can be naturally the same order of magnitude as the usual
gravitational... | [
{
"created": "Sat, 19 Oct 2019 20:03:42 GMT",
"version": "v1"
}
] | 2021-02-16 | [
[
"Davis",
"Anne-Christine",
""
],
[
"Melville",
"Scott",
""
]
] | When augmenting our cosmological models or gravitational theories with an additional light scalar field, any coupling between matter and this scalar can affect the orbital motion of binary systems. Ordinarily, the new force mediated by the scalar can be naturally the same order of magnitude as the usual gravitational f... |
gr-qc/9909015 | Rod Aros | Rodrigo Aros, Mauricio Contreras, Rodrigo Olea, Ricardo Troncoso and
Jorge Zanelli | Conserved charges for gravity with locally AdS asymptotics | 5 pages, 2 Columns, revtex. Last version for Phys. Rev. Lett | Phys.Rev.Lett.84:1647-1650,2000 | 10.1103/PhysRevLett.84.1647 | CECS-PHY-99/14 | gr-qc hep-th | null | A new formula for the conserved charges in 3+1 gravity for spacetimes with
local AdS asymptotic geometry is proposed. It is shown that requiring the
action to have an extremum for this class of asymptotia sets the boundary term
that must be added to the Lagrangian as the Euler density with a fixed weight
factor. The ... | [
{
"created": "Sat, 4 Sep 1999 00:26:47 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Dec 1999 00:22:28 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Aros",
"Rodrigo",
""
],
[
"Contreras",
"Mauricio",
""
],
[
"Olea",
"Rodrigo",
""
],
[
"Troncoso",
"Ricardo",
""
],
[
"Zanelli",
"Jorge",
""
]
] | A new formula for the conserved charges in 3+1 gravity for spacetimes with local AdS asymptotic geometry is proposed. It is shown that requiring the action to have an extremum for this class of asymptotia sets the boundary term that must be added to the Lagrangian as the Euler density with a fixed weight factor. The re... |
1406.1124 | Morgan Lynch | Morgan H. Lynch | Acceleration-induced scalar field transitions of n-particle multiplicity | 24 pages, 13 figures. Accepted for publication in Phys. Rev. D | Phys. Rev. D 90, 024049 (2014) | 10.1103/PhysRevD.90.024049 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we calculate the effect of acceleration on the decay and
excitation rates of scalar fields into a final state of arbitrary multiplicity.
The analysis is carried out using standard field operators as well as an
Unruh-DeWitt detector. Using the equivalence of the two methods, we show how to
correctly setu... | [
{
"created": "Wed, 4 Jun 2014 17:52:14 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Jun 2014 20:03:43 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Lynch",
"Morgan H.",
""
]
] | In this paper we calculate the effect of acceleration on the decay and excitation rates of scalar fields into a final state of arbitrary multiplicity. The analysis is carried out using standard field operators as well as an Unruh-DeWitt detector. Using the equivalence of the two methods, we show how to correctly setup ... |
2210.15246 | Srijit Bhattacharjee | Ayon Tarafdar and Srijit Bhattacharjee | Slowly evolving horizons in Einstein gravity and beyond | Section II is extended. Minor corrections and more clarifications
added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study event horizon candidates for slowly evolving dynamical black holes
in General Relativity and Einstein-Gauss-Bonnet (EGB) gravity. Such a type of
horizon candidate has been termed as slowly evolving null surface (SENS). It
signifies a near-equilibrium state of a dynamic black hole. We demonstrate the
time evo... | [
{
"created": "Thu, 27 Oct 2022 08:07:35 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Jan 2023 18:25:08 GMT",
"version": "v2"
}
] | 2023-02-01 | [
[
"Tarafdar",
"Ayon",
""
],
[
"Bhattacharjee",
"Srijit",
""
]
] | We study event horizon candidates for slowly evolving dynamical black holes in General Relativity and Einstein-Gauss-Bonnet (EGB) gravity. Such a type of horizon candidate has been termed as slowly evolving null surface (SENS). It signifies a near-equilibrium state of a dynamic black hole. We demonstrate the time evolu... |
1208.4440 | Takashi Tamaki | Takashi Tamaki, Nobuyuki Sakai | Unified pictures of Q-balls and Q-tubes | 11 pages, 14 figures | null | 10.1103/PhysRevD.86.105011 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | While Q-balls have been investigated intensively for many years, another type
of nontopological solutions, Q-tubes, have not been understood very well. In
this paper we make a comparative study of Q-balls and Q-tubes. First, we
investigate their equilibrium solutions for four types of potentials. We find,
for example... | [
{
"created": "Wed, 22 Aug 2012 08:05:47 GMT",
"version": "v1"
}
] | 2015-03-20 | [
[
"Tamaki",
"Takashi",
""
],
[
"Sakai",
"Nobuyuki",
""
]
] | While Q-balls have been investigated intensively for many years, another type of nontopological solutions, Q-tubes, have not been understood very well. In this paper we make a comparative study of Q-balls and Q-tubes. First, we investigate their equilibrium solutions for four types of potentials. We find, for example, ... |
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