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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2312.11879 | Wei Xiong | Wei Xiong, Cheng-Yong Zhang, and Peng-Cheng Li | The rotating solutions beyond the spontaneous scalarization in
Einstein-Maxwell-scalar theory | 22 pages, 7 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Einstein-Maxwell-scalar (EMS) theory with a quartic coupling function
features three branches of fundamental black hole (BH) solutions, labeled as
cold, hot, and bald black holes. The static bald black holes (the
Reissner-Nordstr\"om BH) exhibit an intriguing nonlinear instability beyond the
spontaneous scalariza... | [
{
"created": "Tue, 19 Dec 2023 06:13:48 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Jan 2024 06:33:56 GMT",
"version": "v2"
}
] | 2024-01-25 | [
[
"Xiong",
"Wei",
""
],
[
"Zhang",
"Cheng-Yong",
""
],
[
"Li",
"Peng-Cheng",
""
]
] | The Einstein-Maxwell-scalar (EMS) theory with a quartic coupling function features three branches of fundamental black hole (BH) solutions, labeled as cold, hot, and bald black holes. The static bald black holes (the Reissner-Nordstr\"om BH) exhibit an intriguing nonlinear instability beyond the spontaneous scalarizati... |
1905.09968 | Valerio Faraoni | Jeremy C\^ot\'e, Valerio Faraoni, and Andrea Giusti | Revisiting the conformal invariance of Maxwell's equations in curved
spacetime | null | null | 10.1007/s10714-019-2599-x | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the invariance of the curved spacetime Maxwell equations under
conformal transformations. Contrary to standard literature, we include the
discussion of the four-current, the wave equations for the four-potential and
the field, and the behaviour of gauge conditions under the conformal
transformation.
| [
{
"created": "Thu, 23 May 2019 23:28:21 GMT",
"version": "v1"
}
] | 2019-09-25 | [
[
"Côté",
"Jeremy",
""
],
[
"Faraoni",
"Valerio",
""
],
[
"Giusti",
"Andrea",
""
]
] | We revisit the invariance of the curved spacetime Maxwell equations under conformal transformations. Contrary to standard literature, we include the discussion of the four-current, the wave equations for the four-potential and the field, and the behaviour of gauge conditions under the conformal transformation. |
gr-qc/9801099 | Ugo Moschella | Jacques Bros, Henri Epstein, Ugo Moschella | Analyticity properties and thermal effects for general quantum field
theory on de Sitter space-time | 32 pages, Latex. To appear on Commun. Math. Phys | Commun.Math.Phys. 196 (1998) 535-570 | 10.1007/s002200050435 | IHES-P-97-52 | gr-qc hep-th | null | We propose a general framework for quantum field theory on the de Sitter
space-time (i.e. for local field theories whose truncated Wightman functions
are not required to vanish). By requiring that the fields satisfy a weak
spectral condition, formulated in terms of the analytic continuation properties
of their Wightm... | [
{
"created": "Thu, 29 Jan 1998 11:13:57 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Bros",
"Jacques",
""
],
[
"Epstein",
"Henri",
""
],
[
"Moschella",
"Ugo",
""
]
] | We propose a general framework for quantum field theory on the de Sitter space-time (i.e. for local field theories whose truncated Wightman functions are not required to vanish). By requiring that the fields satisfy a weak spectral condition, formulated in terms of the analytic continuation properties of their Wightman... |
0804.0800 | Shantanu Desai | L. Blackburn, L. Cadonati, S. Caride, S. Caudill, S. Chatterji, N.
Christensen, J. Dalrymple, S. Desai, A. Di Credico, G. Ely, J. Garofoli, L.
Goggin, G. Gonz\'alez, R. Gouaty, C. Gray, A. Gretarsson, D. Hoak, T. Isogai,
E. Katsavounidis, J. Kissel, S. Klimenko, R.A. Mercer, S. Mohapatra, S.
Mukherjee, F. Raab,... | The LSC Glitch Group : Monitoring Noise Transients during the fifth LIGO
Science Run | 9 pages, 8 figures, Contribution to 12th Gravitational Wave Data
Analysis Workshop. Changes in response to referee comments. Accepted for
publication in CQG | Class.Quant.Grav.25:184004,2008 | 10.1088/0264-9381/25/18/184004 | LIGO-P080016-01 | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The LIGO Scientific Collaboration (LSC) glitch group is part of the LIGO
detector characterization effort. It consists of data analysts and detector
experts who, during and after science runs, collaborate for a better
understanding of noise transients in the detectors. Goals of the glitch group
during the fifth LIGO ... | [
{
"created": "Fri, 4 Apr 2008 20:00:35 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Jul 2008 22:14:20 GMT",
"version": "v2"
}
] | 2016-02-11 | [
[
"Blackburn",
"L.",
""
],
[
"Cadonati",
"L.",
""
],
[
"Caride",
"S.",
""
],
[
"Caudill",
"S.",
""
],
[
"Chatterji",
"S.",
""
],
[
"Christensen",
"N.",
""
],
[
"Dalrymple",
"J.",
""
],
[
"Desai",
... | The LIGO Scientific Collaboration (LSC) glitch group is part of the LIGO detector characterization effort. It consists of data analysts and detector experts who, during and after science runs, collaborate for a better understanding of noise transients in the detectors. Goals of the glitch group during the fifth LIGO sc... |
gr-qc/0009071 | Yuri Pavlov | A. A. Grib, Yu. V. Pavlov | On the possible role of superheavy particles in the early Universe | LaTeX, 7 pages | "I. Ya. Pomeranchuk and Physics at the Turn of the Century".
Proceedings of the International Conference. Eds. A.Berkov, N.Narozhny,
L.Okun. World Scientific Publ., Singapore, 2003, pp.406-412 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Different models of the role of creation of superheavy particles in the early
Friedmann Universe with their subsequent decay on light particles are
investigated. The observable numbers of baryon and entropy are predicted. The
possible role of superheavy particles in creation of cold dark matter is
discussed.
| [
{
"created": "Wed, 20 Sep 2000 18:55:41 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Feb 2011 18:55:40 GMT",
"version": "v2"
}
] | 2011-02-11 | [
[
"Grib",
"A. A.",
""
],
[
"Pavlov",
"Yu. V.",
""
]
] | Different models of the role of creation of superheavy particles in the early Friedmann Universe with their subsequent decay on light particles are investigated. The observable numbers of baryon and entropy are predicted. The possible role of superheavy particles in creation of cold dark matter is discussed. |
1705.06294 | Michael Florian Wondrak | Michael Florian Wondrak | The Cosmological Constant and its Problems: A Review of Gravitational
Aether | 10 pages, 2 figures. To appear in the collection of the fifth
international conference on "Experimental Search for Quantum Gravity", held
at FIAS, Frankfurt am Main (Germany), 19-23 September 2016, Springer | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this essay we offer a comprehensible overview of the gravitational aether
scenario. This is a possible extension of Einstein's theory of relativity to
the quantum regime via an effective approach. Quantization of gravity usually
faces several issues including an unexpected high vacuum energy density caused
by quan... | [
{
"created": "Wed, 17 May 2017 18:00:39 GMT",
"version": "v1"
}
] | 2017-05-19 | [
[
"Wondrak",
"Michael Florian",
""
]
] | In this essay we offer a comprehensible overview of the gravitational aether scenario. This is a possible extension of Einstein's theory of relativity to the quantum regime via an effective approach. Quantization of gravity usually faces several issues including an unexpected high vacuum energy density caused by quantu... |
2402.08630 | Martiros Khurshudyan | Martiros Khurshudyan and Emilio Elizalde | Constraints on prospective deviations from the cold dark matter model
using a Gaussian Process | 15 pages | null | null | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | Recently, using Bayesian Machine Learning, a deviation from the cold dark
matter model on cosmological scales has been put forward. Such model might
replace a proposed non-gravitational interaction between dark energy and dark
matter, and help solve the $H_{0}$ tension problem. The idea behind the
learning procedure ... | [
{
"created": "Fri, 19 Jan 2024 10:56:17 GMT",
"version": "v1"
}
] | 2024-02-14 | [
[
"Khurshudyan",
"Martiros",
""
],
[
"Elizalde",
"Emilio",
""
]
] | Recently, using Bayesian Machine Learning, a deviation from the cold dark matter model on cosmological scales has been put forward. Such model might replace a proposed non-gravitational interaction between dark energy and dark matter, and help solve the $H_{0}$ tension problem. The idea behind the learning procedure re... |
gr-qc/0003026 | Naresh Dadhich | Naresh Dadhich | On product spacetime with 2-sphere of constant curvature | 9 pages, 1 figure, LaTex version | null | null | IUCAA-10/2000 | gr-qc | null | If we consider the spacetime manifold as product of a constant curvature
2-sphere (hypersphere) and a 2-space, then solution of the Einstein equation
requires that the latter must also be of constant curvature. There exist only
two solutions for classical matter distribution which are given by the Nariai
(anti) metri... | [
{
"created": "Wed, 8 Mar 2000 06:24:16 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Dadhich",
"Naresh",
""
]
] | If we consider the spacetime manifold as product of a constant curvature 2-sphere (hypersphere) and a 2-space, then solution of the Einstein equation requires that the latter must also be of constant curvature. There exist only two solutions for classical matter distribution which are given by the Nariai (anti) metric ... |
gr-qc/0110091 | Kashif Alvi | Kashif Alvi, Yuk Tung Liu | On the tidally induced gravitational collapse of a particle cluster | 8 pages, 5 figures | Gen.Rel.Grav. 34 (2002) 1067-1076 | 10.1023/A:1016514021408 | null | gr-qc | null | An important issue in the dynamics of neutron star binaries is whether tidal
interaction can cause the individual stars to collapse into black holes during
inspiral. To understand this issue better, we study the dynamics of a cluster
of collisionless particles orbiting a non-rotating black hole, which is part of
a wi... | [
{
"created": "Mon, 22 Oct 2001 21:40:20 GMT",
"version": "v1"
}
] | 2021-10-20 | [
[
"Alvi",
"Kashif",
""
],
[
"Liu",
"Yuk Tung",
""
]
] | An important issue in the dynamics of neutron star binaries is whether tidal interaction can cause the individual stars to collapse into black holes during inspiral. To understand this issue better, we study the dynamics of a cluster of collisionless particles orbiting a non-rotating black hole, which is part of a wide... |
0801.2750 | Hiroyuki Nakano | Hiroyuki Nakano, Carlos O. Lousto (RIT) | New method to integrate 2+1 wave equations with Dirac's delta functions
as sources | 4 pages, 1 figure, prepared for the proceedings of the 17th workshop
on general relativity and gravitation, Nagoya, Japan, Dec.3 - Dec.7, 2007 | null | null | null | gr-qc | null | Gravitational perturbations in a Kerr black hole background can not be
decomposed into simple tensor harmonics in the time domain. Here, we make the
mode decomposition only in the azimuthal direction and discuss the resulting
(2+1)-dimensional Klein-Gordon differential equation for scalar perturbations
with a two dim... | [
{
"created": "Thu, 17 Jan 2008 19:15:07 GMT",
"version": "v1"
}
] | 2008-01-18 | [
[
"Nakano",
"Hiroyuki",
"",
"RIT"
],
[
"Lousto",
"Carlos O.",
"",
"RIT"
]
] | Gravitational perturbations in a Kerr black hole background can not be decomposed into simple tensor harmonics in the time domain. Here, we make the mode decomposition only in the azimuthal direction and discuss the resulting (2+1)-dimensional Klein-Gordon differential equation for scalar perturbations with a two dimen... |
gr-qc/0309012 | Andreas Freise | A. Freise, G. Heinzel, H. Lueck, R. Schilling, B. Willke and K.
Danzmann | Frequency domain interferometer simulation with higher-order spatial
modes | Added an example for the application of the simulation during the
commisioning of the GEO 600 gravitational-wave detector | Class.Quant.Grav. 21 (2004) S1067-S1074 | 10.1088/0264-9381/21/5/102 | null | gr-qc | null | FINESSE is a software simulation that allows to compute the optical
properties of laser interferometers as they are used by the interferometric
gravitational-wave detectors today. It provides a fast and versatile tool which
has proven to be very useful during the design and the commissioning of
gravitational-wave det... | [
{
"created": "Tue, 2 Sep 2003 15:11:30 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jan 2004 16:32:38 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Freise",
"A.",
""
],
[
"Heinzel",
"G.",
""
],
[
"Lueck",
"H.",
""
],
[
"Schilling",
"R.",
""
],
[
"Willke",
"B.",
""
],
[
"Danzmann",
"K.",
""
]
] | FINESSE is a software simulation that allows to compute the optical properties of laser interferometers as they are used by the interferometric gravitational-wave detectors today. It provides a fast and versatile tool which has proven to be very useful during the design and the commissioning of gravitational-wave detec... |
1309.2004 | William C. C. Lima | William C. C. Lima | Quantization of unstable linear scalar fields in static spacetimes | 14 pages. Rectification of the statement at the end of the Sec. III B
of the published version. All other results unchanged | Phys. Rev. D 88, 124005 (2013); Erratum 94, 129901(E) (2016) | 10.1103/PhysRevD.88.124005 10.1103/PhysRevD.94.129901 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the quantization of an unstable field through the construction of
a "one-particle Hilbert space." The system considered here is a neutral scalar
field evolving over a globally hyperbolic static spacetime and subject to a
stationary external scalar potential. In order to prove our results we assume
spacetim... | [
{
"created": "Sun, 8 Sep 2013 20:18:26 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Nov 2013 13:37:05 GMT",
"version": "v2"
},
{
"created": "Tue, 3 Dec 2013 16:46:44 GMT",
"version": "v3"
},
{
"created": "Wed, 11 Jan 2017 16:59:51 GMT",
"version": "v4"
}
] | 2017-01-12 | [
[
"Lima",
"William C. C.",
""
]
] | We discuss the quantization of an unstable field through the construction of a "one-particle Hilbert space." The system considered here is a neutral scalar field evolving over a globally hyperbolic static spacetime and subject to a stationary external scalar potential. In order to prove our results we assume spacetimes... |
1612.05751 | Ehsan Sadri | Ehsan Sadri | An analysis of the expansion acceleration of the Universe in the
Interacting Holographic Dark Energy model | Repetitive work. It has been worked by other author before. A sheykhi | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Holographic model is originated from Holographic principle. The equation of
state in Holographic model and Einstein's gravity with particle horizon can be
obtained as wD>-1/3 and cannot justify the expansion acceleration of the
Universe. But, by using the event horizon, this model can result in the
accelerating expan... | [
{
"created": "Sat, 17 Dec 2016 13:14:49 GMT",
"version": "v1"
},
{
"created": "Sun, 25 Jun 2017 20:44:45 GMT",
"version": "v2"
}
] | 2017-06-27 | [
[
"Sadri",
"Ehsan",
""
]
] | Holographic model is originated from Holographic principle. The equation of state in Holographic model and Einstein's gravity with particle horizon can be obtained as wD>-1/3 and cannot justify the expansion acceleration of the Universe. But, by using the event horizon, this model can result in the accelerating expansi... |
2111.02663 | Hamid R. Bakhtiarizadeh | Hamid R. Bakhtiarizadeh | Charged rotating black strings in Einsteinian cubic gravity | 16 pages, LaTex file, no figure, matches published version in PRD | null | 10.1103/PhysRevD.105.064037 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We construct, for the first time, charged rotating black string solutions in
four-dimensional Einsteinian cubic gravity, which are asymptotically anti de
Sitter. By assuming that the solutions are completely regular at the horizon
and studying their near-horizon behavior, we find some thermodynamic
properties, which ... | [
{
"created": "Thu, 4 Nov 2021 07:06:12 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Mar 2022 17:11:50 GMT",
"version": "v2"
},
{
"created": "Wed, 23 Mar 2022 15:24:06 GMT",
"version": "v3"
}
] | 2022-03-24 | [
[
"Bakhtiarizadeh",
"Hamid R.",
""
]
] | We construct, for the first time, charged rotating black string solutions in four-dimensional Einsteinian cubic gravity, which are asymptotically anti de Sitter. By assuming that the solutions are completely regular at the horizon and studying their near-horizon behavior, we find some thermodynamic properties, which ca... |
0804.4801 | Ujjal Debnath | Writambhara Chakraborty and Ujjal Debnath | Role of Tachyonic Field in Accelerating Universe in Presence of Perfect
Fluid | 9 latex pages, 4 figures, RevTex style | Astrophys.SpaceSci.315:73-78,2008 | 10.1007/s10509-008-9795-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently tachyonic field has been depicted as dark energy model to represent
the present acceleration of the Universe. In this paper we have considered
mixture of tachyonic fluid with a perfect fluid. For this purpose we have
considered barotropic fluid and Generalized Chaplygin gas(G.C.G.). We have
considered a part... | [
{
"created": "Wed, 30 Apr 2008 11:56:13 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Chakraborty",
"Writambhara",
""
],
[
"Debnath",
"Ujjal",
""
]
] | Recently tachyonic field has been depicted as dark energy model to represent the present acceleration of the Universe. In this paper we have considered mixture of tachyonic fluid with a perfect fluid. For this purpose we have considered barotropic fluid and Generalized Chaplygin gas(G.C.G.). We have considered a partic... |
2405.11583 | Muchun Chen | Mu-Chun Chen, Hao-Yang Liu, Qi-Yan Zhang, Jun Zhang | Probing Massive Fields with Multi-Band Gravitational-Wave Observations | 8 pages,3 figures | null | null | null | gr-qc astro-ph.CO hep-ex hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the prospect of probing massive fields and testing
gravitational theories with multi-band observations of gravitational waves
emitted from coalescing compact binaries. Focusing on the dipole radiation
induced by a massive field, we show that multi-band observations can probe the
field with mass ranging... | [
{
"created": "Sun, 19 May 2024 15:26:04 GMT",
"version": "v1"
},
{
"created": "Tue, 21 May 2024 05:57:05 GMT",
"version": "v2"
}
] | 2024-05-22 | [
[
"Chen",
"Mu-Chun",
""
],
[
"Liu",
"Hao-Yang",
""
],
[
"Zhang",
"Qi-Yan",
""
],
[
"Zhang",
"Jun",
""
]
] | We investigate the prospect of probing massive fields and testing gravitational theories with multi-band observations of gravitational waves emitted from coalescing compact binaries. Focusing on the dipole radiation induced by a massive field, we show that multi-band observations can probe the field with mass ranging f... |
1801.06536 | Manuel Hohmann | Manuel Hohmann, Christian Pfeifer | Scalar-torsion theories of gravity II: $L(T, X, Y, \phi)$ theory | 14 pages, no figures | Phys. Rev. D 98, 064003 (2018) | 10.1103/PhysRevD.98.064003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Lorentz invariant scalar-tensor teleparallel gravity theories
with a Lagrangian built from the torsion scalar, a scalar field, its kinetic
term and a derivative coupling between the torsion and the scalar field. The
field equations of the theory are derived and the relation between the spin
connection and... | [
{
"created": "Fri, 19 Jan 2018 18:57:00 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Feb 2018 18:23:06 GMT",
"version": "v2"
}
] | 2018-09-12 | [
[
"Hohmann",
"Manuel",
""
],
[
"Pfeifer",
"Christian",
""
]
] | We consider Lorentz invariant scalar-tensor teleparallel gravity theories with a Lagrangian built from the torsion scalar, a scalar field, its kinetic term and a derivative coupling between the torsion and the scalar field. The field equations of the theory are derived and the relation between the spin connection and t... |
1902.06903 | Shibaji Banerjee | Ashadul Halder, Shibaji Banerjee, Debasish Majumdar | Intensification of Gravitational Wave Field Near Compact Star | Total 10 pages, 6 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational waves (GWs) has been a topic of interest for its versatile
capabilities of probing several aspects of cosmology and early Universe.
Gravitational lensing enhances further the extent of this sort of waves and
upgrade our understanding to a next level. Besides several similarities with
optical waves, ... | [
{
"created": "Tue, 19 Feb 2019 05:31:52 GMT",
"version": "v1"
}
] | 2019-02-20 | [
[
"Halder",
"Ashadul",
""
],
[
"Banerjee",
"Shibaji",
""
],
[
"Majumdar",
"Debasish",
""
]
] | The gravitational waves (GWs) has been a topic of interest for its versatile capabilities of probing several aspects of cosmology and early Universe. Gravitational lensing enhances further the extent of this sort of waves and upgrade our understanding to a next level. Besides several similarities with optical waves, GW... |
gr-qc/0307070 | Viqar Husain | Viqar Husain | Probing entropy bounds with scalar field spacetimes | 10 pages, 5 figures; published version with typos corrected | Phys.Rev. D69 (2004) 084002 | 10.1103/PhysRevD.69.084002 | null | gr-qc hep-th | null | We study covariant entropy bounds in dynamical spacetimes with naked
singularities. Specifically we study a spherically symmetric massless scalar
field solution. The solution is an inhomogeneous cosmology with an initial
spacelike singularity, and a naked timelike singularity at the origin. We
construct the entropy f... | [
{
"created": "Tue, 15 Jul 2003 19:47:49 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Dec 2003 18:44:38 GMT",
"version": "v2"
},
{
"created": "Wed, 2 Jun 2004 19:46:41 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Husain",
"Viqar",
""
]
] | We study covariant entropy bounds in dynamical spacetimes with naked singularities. Specifically we study a spherically symmetric massless scalar field solution. The solution is an inhomogeneous cosmology with an initial spacelike singularity, and a naked timelike singularity at the origin. We construct the entropy flu... |
gr-qc/0502082 | Kevin Vandersloot | Kevin Vandersloot | On the Hamiltonian Constraint of Loop Quantum Cosmology | null | Phys.Rev. D71 (2005) 103506 | 10.1103/PhysRevD.71.103506 | null | gr-qc | null | In this paper we construct the Hamiltonian constraint operator of loop
quantum cosmology using holonomies defined for arbitrary irreducible SU(2)
representations labeled by spin J. We show that modifications to the effective
semi-classical equations of motion arise both in the gravitational part of the
constraint as ... | [
{
"created": "Sun, 20 Feb 2005 17:53:36 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Vandersloot",
"Kevin",
""
]
] | In this paper we construct the Hamiltonian constraint operator of loop quantum cosmology using holonomies defined for arbitrary irreducible SU(2) representations labeled by spin J. We show that modifications to the effective semi-classical equations of motion arise both in the gravitational part of the constraint as we... |
1005.5347 | Sergio Dain | Sergio Dain and Mart\'in Reiris | Linear perturbations for the vacuum axisymmetric Einstein equations | 13 pages. We suppressed the statements about decay at infinity. The
proofs of these statements were incomplete. The complete proofs will require
extensive technical analysis. We will studied this in a subsequent work. We
also have rewritten the introduction and slighted changed the title | Annales Henri Poincare 12:49-65,2011 | 10.1007/s00023-010-0074-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In axial symmetry, there is a gauge for Einstein equations such that the
total mass of the spacetime can be written as a conserved, positive definite,
integral on the spacelike slices. This property is expected to play an
important role in the global evolution. In this gauge the equations reduce to a
coupled hyperbol... | [
{
"created": "Fri, 28 May 2010 18:02:43 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Jul 2010 13:34:59 GMT",
"version": "v2"
}
] | 2011-02-01 | [
[
"Dain",
"Sergio",
""
],
[
"Reiris",
"Martín",
""
]
] | In axial symmetry, there is a gauge for Einstein equations such that the total mass of the spacetime can be written as a conserved, positive definite, integral on the spacelike slices. This property is expected to play an important role in the global evolution. In this gauge the equations reduce to a coupled hyperbolic... |
gr-qc/0109030 | W. M. Stuckey | W.M. Stuckey | Metric structure and dimensionality over a Borel set via uniform spaces | 12 pages, 1 figure; references added | null | null | null | gr-qc | null | We introduce a pregeometry that provides a metric and dimensionality over a
Borel set (Wheeler's "bucket of dust") without assuming probability amplitudes
for adjacency. Rather, a non-trivial metric is produced over a Borel set X per
a uniformity base generated via the discrete topological group structures over
X. We... | [
{
"created": "Mon, 10 Sep 2001 14:40:39 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Sep 2001 16:47:49 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Stuckey",
"W. M.",
""
]
] | We introduce a pregeometry that provides a metric and dimensionality over a Borel set (Wheeler's "bucket of dust") without assuming probability amplitudes for adjacency. Rather, a non-trivial metric is produced over a Borel set X per a uniformity base generated via the discrete topological group structures over X. We s... |
1511.00225 | Alexander Pavlov E | Alexander E. Pavlov | Intrinsic time in Wheeler-DeWitt conformal superspace | 12 pages | null | 10.1142/9789814759816_0047 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An intrinsic time in Geometrodynamics is obtained with using a scaled Dirac's
mapping. By addition of a background metric, one can construct a scalar field.
It is suitable to play a role of intrinsic time. Cauchy problem was
successfully solved in conformal variables because they are physical ones.
First, the intrins... | [
{
"created": "Sun, 1 Nov 2015 10:30:08 GMT",
"version": "v1"
},
{
"created": "Sun, 29 May 2016 16:00:14 GMT",
"version": "v2"
}
] | 2016-05-31 | [
[
"Pavlov",
"Alexander E.",
""
]
] | An intrinsic time in Geometrodynamics is obtained with using a scaled Dirac's mapping. By addition of a background metric, one can construct a scalar field. It is suitable to play a role of intrinsic time. Cauchy problem was successfully solved in conformal variables because they are physical ones. First, the intrinsic... |
1607.08333 | Bibhas Majhi Ranjan | Ashish Bakshi, Bibhas Ranjan Majhi, Saurav Samanta | Gravitational surface Hamiltonian and entropy quantization | Revised version, accepted in Phys. Lett. B | Phys.Lett. B765 (2017) 334-338 | 10.1016/j.physletb.2016.12.036 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The surface Hamiltonian corresponding to the surface part of a gravitational
action has $xp$ structure where $p$ is conjugate momentum of $x$. Moreover, it
leads to $TS$ on the horizon of a black hole. Here $T$ and $S$ are temperature
and entropy of the horizon. Imposing the hermiticity condition we quantize this
Ham... | [
{
"created": "Thu, 28 Jul 2016 07:27:01 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Dec 2016 07:21:31 GMT",
"version": "v2"
}
] | 2016-12-30 | [
[
"Bakshi",
"Ashish",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
],
[
"Samanta",
"Saurav",
""
]
] | The surface Hamiltonian corresponding to the surface part of a gravitational action has $xp$ structure where $p$ is conjugate momentum of $x$. Moreover, it leads to $TS$ on the horizon of a black hole. Here $T$ and $S$ are temperature and entropy of the horizon. Imposing the hermiticity condition we quantize this Hamil... |
1306.1363 | Niall \'O Murchadha | Rory Conboye and Niall \'O Murchadha | Potentials for transverse trace-free tensors | null | Class. Quantum Grav. 31 (2014) 085019 | 10.1088/0264-9381/31/8/085019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the initial conditions of the $3 + 1$ formalism for numerical relativity,
the transverse and trace-free (TT) part of the extrinsic curvature plays a key
role. We know that TT tensors possess two degrees of freedom per space point.
However, finding an expression for a TT tensor depending on only two scalar
function... | [
{
"created": "Thu, 6 Jun 2013 10:06:01 GMT",
"version": "v1"
}
] | 2016-03-21 | [
[
"Conboye",
"Rory",
""
],
[
"Murchadha",
"Niall Ó",
""
]
] | In the initial conditions of the $3 + 1$ formalism for numerical relativity, the transverse and trace-free (TT) part of the extrinsic curvature plays a key role. We know that TT tensors possess two degrees of freedom per space point. However, finding an expression for a TT tensor depending on only two scalar functions ... |
0707.0053 | Mehedi Kalam Dr. | M.Kalam, F.Rahaman and S.Mondal | Particle Motion Around Tachyon Monopole | 14 pages, 7 figures | Gen.Rel.Grav.40:1849-1861,2008 | 10.1007/s10714-008-0605-9 | null | gr-qc | null | Recently, Li and Liu have studied global monoole of tachyon in a four
dimensional static space-time. We analyze the motion of massless and massive
particles around tachyon monopole. Interestingly, for the bending of light rays
due to tachyon monopole instead of getting angle of deficit we find angle of
surplus. Also ... | [
{
"created": "Sat, 30 Jun 2007 10:26:07 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kalam",
"M.",
""
],
[
"Rahaman",
"F.",
""
],
[
"Mondal",
"S.",
""
]
] | Recently, Li and Liu have studied global monoole of tachyon in a four dimensional static space-time. We analyze the motion of massless and massive particles around tachyon monopole. Interestingly, for the bending of light rays due to tachyon monopole instead of getting angle of deficit we find angle of surplus. Also we... |
gr-qc/0102087 | Victor P. Ruban | V.P. Ruban and D.I. Podolsky | Hydrodynamics of an ultra-relativistic fluid in the flat anisotropic
cosmological model | 4 pages, 1 eps figure, revtex | Phys.Rev.D64:047503,2001 | 10.1103/PhysRevD.64.047503 | null | gr-qc | null | Motion of an ultra-relativistic perfect fluid in space-time with the Kasner
metrics is investigated by the Hamiltonian method. It is found that in the
limit of small times a tendency takes place to formation of strong
inhomogeneities in matter distribution. In the case of slow flows the effect of
non-stationary aniso... | [
{
"created": "Tue, 20 Feb 2001 17:42:02 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Ruban",
"V. P.",
""
],
[
"Podolsky",
"D. I.",
""
]
] | Motion of an ultra-relativistic perfect fluid in space-time with the Kasner metrics is investigated by the Hamiltonian method. It is found that in the limit of small times a tendency takes place to formation of strong inhomogeneities in matter distribution. In the case of slow flows the effect of non-stationary anisotr... |
1909.13314 | Kubantai Ernazarov | K. K. Ernazarov | Stable exponential cosmological solutions with three factor spaces of
dimensions $m=3$, $k_1=k$ and $k_2 = k$ in the Einstein-Gauss-Bonnet model
with a $\Lambda$-term | 20 pages, LaTex, no figures, to appear in IJGMMP | null | 10.1142/S0219887819300046 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a $(4 + 2k)$ - dimensional Einstein-Gauss-Bonnet model with the
cosmological $\Lambda$-term.
Exact stable solutions with three constant Hubble-like parameters in this
model are obtained. In this case, the multidimensional cosmological model deals
with three factor spaces: the external 3-dimensional "our... | [
{
"created": "Sun, 29 Sep 2019 16:42:33 GMT",
"version": "v1"
}
] | 2020-01-29 | [
[
"Ernazarov",
"K. K.",
""
]
] | We consider a $(4 + 2k)$ - dimensional Einstein-Gauss-Bonnet model with the cosmological $\Lambda$-term. Exact stable solutions with three constant Hubble-like parameters in this model are obtained. In this case, the multidimensional cosmological model deals with three factor spaces: the external 3-dimensional "our" wo... |
gr-qc/0409046 | Jorge Pullin | Jorge Pullin | Matters of Gravity, the newsletter of the Topical Group in Gravitation
of the American Physical Society | Jorge Pullin is the editor of the paper. 26 pages, LaTex, one figure,
uses html.sty | null | null | MOG-24 | gr-qc | null | Contents:
Community news:
Message from the Chair, by Jim Isenberg
We hear that..., by Jorge Pullin
THE TGG WYP Speakers Program, by Richard Price
Research Briefs:
Gravity Probe B is launched, by Bill Hamilton
Questions and progress in mathematical general relativity, by Jim Isenberg
Summary of recent ... | [
{
"created": "Fri, 10 Sep 2004 16:05:38 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Pullin",
"Jorge",
""
]
] | Contents: Community news: Message from the Chair, by Jim Isenberg We hear that..., by Jorge Pullin THE TGG WYP Speakers Program, by Richard Price Research Briefs: Gravity Probe B is launched, by Bill Hamilton Questions and progress in mathematical general relativity, by Jim Isenberg Summary of recent preliminary LIGO r... |
gr-qc/0509016 | Soon-Tae Hong | Soon-Tae Hong | Thermodynamics of (1+1) dilatonic black holes in global flat embedding
scheme | 5 pages | Phys.Lett. B623 (2005) 135-140 | 10.1016/j.physletb.2005.07.045 | null | gr-qc hep-th | null | We study thermodynamics of (1+1) dimensional dilatonic black holes in global
embedding Minkowski space scheme. Exploiting geometrical entropy correction we
construct consistent entropy for the charged dilatonic black hole. Moreover,
(1+1) dilatonic black holes with higher order terms are shown to possess (3+2)
global... | [
{
"created": "Mon, 5 Sep 2005 08:07:17 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Hong",
"Soon-Tae",
""
]
] | We study thermodynamics of (1+1) dimensional dilatonic black holes in global embedding Minkowski space scheme. Exploiting geometrical entropy correction we construct consistent entropy for the charged dilatonic black hole. Moreover, (1+1) dilatonic black holes with higher order terms are shown to possess (3+2) global f... |
gr-qc/9808055 | Richard Gass | Richard G. Gass, F. Paul Esposito, L.C.R. Wijewardhana and Louis
Witten | Detecting Event Horizons and Stationary Surfaces | 23 pages, 13 figures | null | null | null | gr-qc | null | We have investigated the behavior of three curvature invariants for
Schwarzschild, Reissner-Nordstr{\o}m, Kerr, and Kerr-Newman black holes. We
have also studied these invariants for a Schwarzschild-de Sitter space-time,
the $\gamma$ metric, and for a 2+1 charged dimensional black hole. The
invariants are
$I_{1}=R_{\... | [
{
"created": "Thu, 20 Aug 1998 13:07:26 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Gass",
"Richard G.",
""
],
[
"Esposito",
"F. Paul",
""
],
[
"Wijewardhana",
"L. C. R.",
""
],
[
"Witten",
"Louis",
""
]
] | We have investigated the behavior of three curvature invariants for Schwarzschild, Reissner-Nordstr{\o}m, Kerr, and Kerr-Newman black holes. We have also studied these invariants for a Schwarzschild-de Sitter space-time, the $\gamma$ metric, and for a 2+1 charged dimensional black hole. The invariants are $I_{1}=R_{\al... |
2101.08791 | Marvin L\"uben | Angelo Caravano, Marvin L\"uben, Jochen Weller | Combining cosmological and local bounds on bimetric theory | null | null | 10.1088/1475-7516/2021/09/035 | MPP-2021-6 | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | Ghost-free bimetric theory describes two nonlinearly interacting spin-2
fields, one massive and one massless, thus extending general relativity. We
confront bimetric theory with observations of Supernovae type 1a, Baryon
Acoustic Oscillations and the Cosmic Microwave Background in a statistical
analysis, utilising th... | [
{
"created": "Thu, 21 Jan 2021 19:00:01 GMT",
"version": "v1"
}
] | 2021-10-04 | [
[
"Caravano",
"Angelo",
""
],
[
"Lüben",
"Marvin",
""
],
[
"Weller",
"Jochen",
""
]
] | Ghost-free bimetric theory describes two nonlinearly interacting spin-2 fields, one massive and one massless, thus extending general relativity. We confront bimetric theory with observations of Supernovae type 1a, Baryon Acoustic Oscillations and the Cosmic Microwave Background in a statistical analysis, utilising the ... |
gr-qc/9508066 | Eanna Flanagan | Omos Ori and Eanna Flanagan | How generic are null spacetime singularities? | 5 pages, 1 uuencoded figure, uses revtex macros Revised 25/2/95 to
correct the definition of weak singularities | Phys.Rev.D53:1754-1758,1996 | 10.1103/PhysRevD.53.1754 | null | gr-qc | null | The spacetime singularities inside realistic black holes are sometimes
thought to be spacelike and strong, since there is a generic class of solutions
(BKL) to Einsteins equations with these properties. We show that null, weak
singularities are also generic, in the following sense: there is a class of
vacuum solution... | [
{
"created": "Thu, 31 Aug 1995 22:09:51 GMT",
"version": "v1"
},
{
"created": "Sun, 25 Feb 1996 21:47:31 GMT",
"version": "v2"
}
] | 2009-12-30 | [
[
"Ori",
"Omos",
""
],
[
"Flanagan",
"Eanna",
""
]
] | The spacetime singularities inside realistic black holes are sometimes thought to be spacelike and strong, since there is a generic class of solutions (BKL) to Einsteins equations with these properties. We show that null, weak singularities are also generic, in the following sense: there is a class of vacuum solutions ... |
2111.06897 | Sumanta Chakraborty | Justin C. Feng and Sumanta Chakraborty | Weiss variation for general boundaries | v2, Published in the GERG memorial volume for Prof. T. Padmanabhan,
25 pages, 1 figure | Gen. Relt. Grav. 54, 67 (2022) | 10.1007/s10714-022-02953-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Weiss variation of the Einstein-Hilbert action with an appropriate
boundary term has been studied for general boundary surfaces; the boundary
surfaces can be spacelike, timelike, or null. To achieve this we introduce an
auxiliary reference connection and find that the resulting Weiss variation
yields the Einstein... | [
{
"created": "Fri, 12 Nov 2021 19:00:00 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Jul 2022 01:56:08 GMT",
"version": "v2"
}
] | 2022-07-20 | [
[
"Feng",
"Justin C.",
""
],
[
"Chakraborty",
"Sumanta",
""
]
] | The Weiss variation of the Einstein-Hilbert action with an appropriate boundary term has been studied for general boundary surfaces; the boundary surfaces can be spacelike, timelike, or null. To achieve this we introduce an auxiliary reference connection and find that the resulting Weiss variation yields the Einstein e... |
1104.1122 | Riccardo Sturani | S. Foffa and R. Sturani | Effective field theory calculation of conservative binary dynamics at
third post-Newtonian order | 24 pages, 6 figures. Typos corrected and references added in v2.
Typos corrected in v3 | Phys.Rev.D84:044031,2011 | 10.1103/PhysRevD.84.044031 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reproduce the two-body gravitational conservative dynamics at third
post-Newtonian order for spin-less sources by using the effective field theory
methods for the gravitationally bound two-body system, proposed by Goldberger
and Rothstein. This result has been obtained by automatizing the computation of
Feynman am... | [
{
"created": "Wed, 6 Apr 2011 14:54:41 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jun 2011 14:33:59 GMT",
"version": "v2"
},
{
"created": "Sat, 19 Nov 2011 12:17:26 GMT",
"version": "v3"
}
] | 2015-03-19 | [
[
"Foffa",
"S.",
""
],
[
"Sturani",
"R.",
""
]
] | We reproduce the two-body gravitational conservative dynamics at third post-Newtonian order for spin-less sources by using the effective field theory methods for the gravitationally bound two-body system, proposed by Goldberger and Rothstein. This result has been obtained by automatizing the computation of Feynman ampl... |
gr-qc/9605069 | Ichiro Oda | Akio Hosoya and Ichiro Oda | Black Hole Singularity and Generalized Quantum Affine Parameter | 17 pages, phyzzx | null | null | TIT/HEP-334/COSMO-73, EDO-EP-5 | gr-qc | null | We study a behavior of quantum generalized affine parameter (QGAP), which has
been recently proposed by one of the present authors, near the singularity and
the event horizon in three and four spacetime dimensions in terms of a
minisuperspace model of quantum gravity. It is shown that the QGAP is infinite
to the sing... | [
{
"created": "Fri, 31 May 1996 06:11:32 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hosoya",
"Akio",
""
],
[
"Oda",
"Ichiro",
""
]
] | We study a behavior of quantum generalized affine parameter (QGAP), which has been recently proposed by one of the present authors, near the singularity and the event horizon in three and four spacetime dimensions in terms of a minisuperspace model of quantum gravity. It is shown that the QGAP is infinite to the singul... |
2306.02504 | Rodrigo Dal Bosco Fontana | R. D. B Fontana | Scalar field instabilities in charged BTZ black holes | 3 figures, 5 panels, 15 pages | null | 10.1103/PhysRevD.109.044039 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the charged scalar field propagating in a (2+1) charged BTZ
black hole. The conditions for stability are studied unveiling, for each black
hole geometry, the existence of a critical scalar charge as of the evolution is
unstable. The existence of growing profiles is substantiated by the deep in the
effe... | [
{
"created": "Sun, 4 Jun 2023 23:34:00 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Feb 2024 16:00:23 GMT",
"version": "v2"
}
] | 2024-02-27 | [
[
"Fontana",
"R. D. B",
""
]
] | We investigate the charged scalar field propagating in a (2+1) charged BTZ black hole. The conditions for stability are studied unveiling, for each black hole geometry, the existence of a critical scalar charge as of the evolution is unstable. The existence of growing profiles is substantiated by the deep in the effect... |
2207.07733 | Makana Silva | Makana Silva and Christopher Hirata | Dynamical perturbations around an extreme mass ratio inspiral near
resonance | 19 pages, 5 figures, 1 table, to be submitted to PRD | null | 10.1103/PhysRevD.106.084058 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Extreme mass ratio inspirals (EMRIs) -- systems with a compact object
orbiting a much more massive (e.g., galactic center) black hole -- are of
interest both as a new probe of the environments of galactic nuclei, and their
waveforms are a precision test of the Kerr metric. This work focuses on the
effects of an exter... | [
{
"created": "Fri, 15 Jul 2022 20:09:32 GMT",
"version": "v1"
}
] | 2022-11-09 | [
[
"Silva",
"Makana",
""
],
[
"Hirata",
"Christopher",
""
]
] | Extreme mass ratio inspirals (EMRIs) -- systems with a compact object orbiting a much more massive (e.g., galactic center) black hole -- are of interest both as a new probe of the environments of galactic nuclei, and their waveforms are a precision test of the Kerr metric. This work focuses on the effects of an externa... |
1602.00581 | Yu Zhang | En-Kun Li, Yu Zhang, Jin-Ling Geng, Peng-Fei Duan | Generalized holographic Ricci dark energy and generalized second law of
thermodynamics in Bianchi Type I universe | 11 pages, 4 figures | Gen. Relativ. Gravit. (2015) 47:136 | 10.1007/s10714-015-1983-4 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Generalized second law of thermodynamics in the Bianchi type I universe with
the generalized holographic Ricci dark energy model is studied in this paper.
The behavior of dark energy's equation of state parameter indicates that it is
matter-like in the early time of the universe but phantom-like in the future.
By ana... | [
{
"created": "Fri, 29 Jan 2016 17:16:35 GMT",
"version": "v1"
}
] | 2016-02-02 | [
[
"Li",
"En-Kun",
""
],
[
"Zhang",
"Yu",
""
],
[
"Geng",
"Jin-Ling",
""
],
[
"Duan",
"Peng-Fei",
""
]
] | Generalized second law of thermodynamics in the Bianchi type I universe with the generalized holographic Ricci dark energy model is studied in this paper. The behavior of dark energy's equation of state parameter indicates that it is matter-like in the early time of the universe but phantom-like in the future. By analy... |
gr-qc/0107057 | Abel Camacho Quintana | Abel Camacho (Dept. of Physics, Instituto Nacional de Investigaciones
Nucleares) | Non--Newtonian gravity and coherence properties of light | 10 pages, accepted in Physics Letters A | Phys.Lett. A287 (2001) 339-343 | 10.1016/S0375-9601(01)00496-0 | null | gr-qc quant-ph | null | In this work the possibility of detecting a non--Newtonian contribution to
the gravitational potential by means of its effects upon the first and
second--order coherence properties of light is analyzed. It will be proved
that, in principle, the effects of a fifth force upon the correlation functions
of electromagneti... | [
{
"created": "Mon, 16 Jul 2001 14:11:44 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Camacho",
"Abel",
"",
"Dept. of Physics, Instituto Nacional de Investigaciones\n Nucleares"
]
] | In this work the possibility of detecting a non--Newtonian contribution to the gravitational potential by means of its effects upon the first and second--order coherence properties of light is analyzed. It will be proved that, in principle, the effects of a fifth force upon the correlation functions of electromagnetic ... |
2004.04178 | Dawood Kothawala Dr. | Dawood Kothawala | Varying without varying: Reparameterisations, Diffeomorphisms, General
Covariance, Lie derivatives, and all that | v2: 32 pages, 4 figures, certain discussions expanded; v1: 26 pages,
4 figures | Eur. J. Phys. 42, 055601 (2021) | 10.1088/1361-6404/ac0105 | null | gr-qc physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The standard way of deriving Euler-Lagrange (EL) equations given a point
particle action is to vary the trajectory and set the first variation of the
action to zero. However, if the action is (i) reparameterisation invariant, and
(ii) generally covariant, I show that one may derive the EL equations by
suitably "nulli... | [
{
"created": "Wed, 8 Apr 2020 18:00:12 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Jun 2021 16:14:25 GMT",
"version": "v2"
}
] | 2021-06-15 | [
[
"Kothawala",
"Dawood",
""
]
] | The standard way of deriving Euler-Lagrange (EL) equations given a point particle action is to vary the trajectory and set the first variation of the action to zero. However, if the action is (i) reparameterisation invariant, and (ii) generally covariant, I show that one may derive the EL equations by suitably "nullify... |
gr-qc/0301059 | Brian Edgar | Raffaele Rani, S. Brian Edgar and Alan Barnes | Killing Tensors and Conformal Killing Tensors from Conformal Killing
Vectors | 18 pages References added. Comments and reference to 2-dim case.
Typos corrected | Class.Quant.Grav. 20 (2003) 1929-1942 | 10.1088/0264-9381/20/11/301 | null | gr-qc | null | Koutras has proposed some methods to construct reducible proper conformal
Killing tensors and Killing tensors (which are, in general, irreducible) when a
pair of orthogonal conformal Killing vectors exist in a given space. We give
the completely general result demonstrating that this severe restriction of
orthogonali... | [
{
"created": "Thu, 16 Jan 2003 16:11:29 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Jan 2003 20:24:47 GMT",
"version": "v2"
},
{
"created": "Wed, 12 Mar 2003 16:41:38 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Rani",
"Raffaele",
""
],
[
"Edgar",
"S. Brian",
""
],
[
"Barnes",
"Alan",
""
]
] | Koutras has proposed some methods to construct reducible proper conformal Killing tensors and Killing tensors (which are, in general, irreducible) when a pair of orthogonal conformal Killing vectors exist in a given space. We give the completely general result demonstrating that this severe restriction of orthogonality... |
gr-qc/9809032 | John W. Barrett | John W. Barrett, Ruth M. Williams | The asymptotics of an amplitude for the 4-simplex | 5 pages amstex, typos corrected | Adv.Theor.Math.Phys. 3 (1999) 209-215 | null | null | gr-qc | null | An expression for the oscillatory part of an asymptotic formula for the
relativistic spin network amplitude for a 4-simplex is given. The amplitude
depends on specified areas for each two-dimensional face in the 4-simplex. The
asymptotic formula has a contribution from each flat Euclidean metric on the
4-simplex whic... | [
{
"created": "Tue, 8 Sep 1998 09:49:32 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Feb 1999 14:05:32 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Barrett",
"John W.",
""
],
[
"Williams",
"Ruth M.",
""
]
] | An expression for the oscillatory part of an asymptotic formula for the relativistic spin network amplitude for a 4-simplex is given. The amplitude depends on specified areas for each two-dimensional face in the 4-simplex. The asymptotic formula has a contribution from each flat Euclidean metric on the 4-simplex which ... |
2403.10605 | Dimitrios Giataganas | D. Giataganas, A. Kehagias, A. Riotto | Quasinormal Modes and Universality of the Penrose Limit of Black Hole
Photon Rings | 33 pages | null | null | null | gr-qc astro-ph.CO astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the physics of photon rings in a wide range of axisymmetric black
holes admitting a separable Hamilton-Jacobi equation for the geodesics.
Utilizing the Killing-Yano tensor, we derive the Penrose limit of the black
holes, which describes the physics near the photon ring. The obtained plane
wave geometry is di... | [
{
"created": "Fri, 15 Mar 2024 18:00:39 GMT",
"version": "v1"
}
] | 2024-03-20 | [
[
"Giataganas",
"D.",
""
],
[
"Kehagias",
"A.",
""
],
[
"Riotto",
"A.",
""
]
] | We study the physics of photon rings in a wide range of axisymmetric black holes admitting a separable Hamilton-Jacobi equation for the geodesics. Utilizing the Killing-Yano tensor, we derive the Penrose limit of the black holes, which describes the physics near the photon ring. The obtained plane wave geometry is dire... |
1605.03404 | Mahouton J. Stephane Houndjo Dr | R. D. Boko, M. J. S. Houndjo, J. Tossa | Stability and Space Phase Analysis in f(R) theory with Generalized
Exponential model | 16 pages and 6 figures, version accepted for publication in IJMPD | International Journal of Modern Physics D Vol. 25, No. 10, 1650098
(2016) | 10.1142/S021827181650098X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have studied in this paper, the stability of dynamical system in $f(R)$
gravity. We have considered the $f(R)$ $\gamma$-gravity and explored its
dynamical analysis. We found six critical points among which only one describes
an universe fulled of both matter and dominated dark energy. It's shown that
these critica... | [
{
"created": "Wed, 4 May 2016 23:50:15 GMT",
"version": "v1"
}
] | 2016-11-29 | [
[
"Boko",
"R. D.",
""
],
[
"Houndjo",
"M. J. S.",
""
],
[
"Tossa",
"J.",
""
]
] | We have studied in this paper, the stability of dynamical system in $f(R)$ gravity. We have considered the $f(R)$ $\gamma$-gravity and explored its dynamical analysis. We found six critical points among which only one describes an universe fulled of both matter and dominated dark energy. It's shown that these critical ... |
2407.04175 | Tetsuya Shiromizu | Keisuke Izumi, Tetsuya Shiromizu, Daisuke Yoshida, Yoshimune Tomikawa
and Hirotaka Yoshino | Loosely trapped surface for slowly rotating black hole | 7 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct the marginal loosely trapped surface (marginal LTS) for the Kerr
spacetime with a small Kerr parameter perturbatively, where the LTS condition
is saturated. An LTS is a surface that specifies the strong gravity region,
which is a generalization of the photon sphere in the Schwarzschild spacetime.
It turn... | [
{
"created": "Thu, 4 Jul 2024 22:22:28 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jul 2024 05:41:26 GMT",
"version": "v2"
}
] | 2024-07-17 | [
[
"Izumi",
"Keisuke",
""
],
[
"Shiromizu",
"Tetsuya",
""
],
[
"Yoshida",
"Daisuke",
""
],
[
"Tomikawa",
"Yoshimune",
""
],
[
"Yoshino",
"Hirotaka",
""
]
] | We construct the marginal loosely trapped surface (marginal LTS) for the Kerr spacetime with a small Kerr parameter perturbatively, where the LTS condition is saturated. An LTS is a surface that specifies the strong gravity region, which is a generalization of the photon sphere in the Schwarzschild spacetime. It turns ... |
0712.3716 | Orchidea Maria Lecian | S. Casanova, O. M. Lecian, G. Montani, R. Ruffini, R. Zalaletdinov | Extended Schouten classification for non-Riemannian geometries | 7 pages, to appear on Mod. Phys. Lett. A | Mod.Phys.Lett.A23:17-23,2008 | 10.1142/S0217732308026157 | null | gr-qc | null | A generalized connection, including Christoffel coefficients, torsion,
non-metricity tensor and metric-asymmetricity object, is analyzed according to
the Schouten classification. The inverse structure matrix is found in the
linearized regime, autoparallel trajectories are defined and the contribution
of the component... | [
{
"created": "Fri, 21 Dec 2007 15:26:53 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Casanova",
"S.",
""
],
[
"Lecian",
"O. M.",
""
],
[
"Montani",
"G.",
""
],
[
"Ruffini",
"R.",
""
],
[
"Zalaletdinov",
"R.",
""
]
] | A generalized connection, including Christoffel coefficients, torsion, non-metricity tensor and metric-asymmetricity object, is analyzed according to the Schouten classification. The inverse structure matrix is found in the linearized regime, autoparallel trajectories are defined and the contribution of the components ... |
gr-qc/9606009 | Tigran Aivazian | Tigran Aivazian | On the link between Shrodinger and Vlasov Equations | 2 pages, LaTex, no figures | null | null | null | gr-qc | null | It is shown that well-known Vlasov equation can be derived by adding "hidden"
degrees of freedom and subsequent quantization. The Shrodinger equation
obtained in this manner coincides (in x-representation) with the kinetic
equation for the original dynamical system
| [
{
"created": "Wed, 5 Jun 1996 22:42:22 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Aivazian",
"Tigran",
""
]
] | It is shown that well-known Vlasov equation can be derived by adding "hidden" degrees of freedom and subsequent quantization. The Shrodinger equation obtained in this manner coincides (in x-representation) with the kinetic equation for the original dynamical system |
1203.6526 | Norbert Bodendorfer | Norbert Bodendorfer, Alexander Stottmeister, Andreas Thurn | On a partially reduced phase space quantisation of general relativity
conformally coupled to a scalar field | 51 pages, 5 figures. v2: Gauge condition used shown to coincide with
CMC gauge. Minor clarifications and corrections | Class. Quantum Grav. 30 (2013) 115017 | 10.1088/0264-9381/30/11/115017 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The purpose of this paper is twofold: On the one hand, after a thorough
review of the matter free case, we supplement the derivations in our companion
paper on 'loop quantum gravity without the Hamiltonian constraint' with
calculational details and extend the results to standard model matter, a
cosmological constant,... | [
{
"created": "Thu, 29 Mar 2012 14:08:13 GMT",
"version": "v1"
},
{
"created": "Sun, 3 Feb 2013 18:58:11 GMT",
"version": "v2"
}
] | 2013-05-14 | [
[
"Bodendorfer",
"Norbert",
""
],
[
"Stottmeister",
"Alexander",
""
],
[
"Thurn",
"Andreas",
""
]
] | The purpose of this paper is twofold: On the one hand, after a thorough review of the matter free case, we supplement the derivations in our companion paper on 'loop quantum gravity without the Hamiltonian constraint' with calculational details and extend the results to standard model matter, a cosmological constant, a... |
2004.14156 | Alexander Shatskiy Doctor | Shatskiy Alexander | Analysis of the Topology of the Kerr Metric | 20 pages, 3 figures | Journal of Experimental and Theoretical Physics, 2020, Vol. 130, N
3, p. 409 | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The equations of motion of a test particle are integrated for the field of a
rotating Kerr black hole (BH). Due to the lack of analytical transformations
for the Carter-Penrose diagrams (CPDs) for the Kerr metric, the topology of the
Kerr BH is studied by analytical investigation of the equations of motion.
Transform... | [
{
"created": "Wed, 29 Apr 2020 12:58:50 GMT",
"version": "v1"
}
] | 2020-04-30 | [
[
"Alexander",
"Shatskiy",
""
]
] | The equations of motion of a test particle are integrated for the field of a rotating Kerr black hole (BH). Due to the lack of analytical transformations for the Carter-Penrose diagrams (CPDs) for the Kerr metric, the topology of the Kerr BH is studied by analytical investigation of the equations of motion. Transformat... |
2311.17540 | Joanna Gonera | Joanna Piwnik, Joanna Gonera, Piotr Kosi\'nski | Herglotz variational principle and Fermat principle in arbitrary metric | 9 pages, no figures, small editorial changes | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lagrangian formalism for the Lagrangians homogeneous of degree two in
velocities is considered. It is shown that the reduced dynamics obtained by
neglecting one generalized coordinate is, in general, described by the Herglotz
extension of Lagrangian formalism. This result is applied to the propagation of
light in gen... | [
{
"created": "Wed, 29 Nov 2023 11:21:08 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Dec 2023 13:33:30 GMT",
"version": "v2"
}
] | 2023-12-15 | [
[
"Piwnik",
"Joanna",
""
],
[
"Gonera",
"Joanna",
""
],
[
"Kosiński",
"Piotr",
""
]
] | Lagrangian formalism for the Lagrangians homogeneous of degree two in velocities is considered. It is shown that the reduced dynamics obtained by neglecting one generalized coordinate is, in general, described by the Herglotz extension of Lagrangian formalism. This result is applied to the propagation of light in gener... |
gr-qc/0601059 | Paul S. Wesson | Paul S. Wesson | Wave Mechanics and General Relativity: A Rapprochement | null | Gen.Rel.Grav. 38 (2006) 937-944 | 10.1007/s10714-006-0273-6 | null | gr-qc | null | Using exact solutions, we show that it is in principle possible to regard
waves and particles as representations of the same underlying geometry, thereby
resolving the problem of wave-particle duality.
| [
{
"created": "Mon, 16 Jan 2006 02:15:14 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Wesson",
"Paul S.",
""
]
] | Using exact solutions, we show that it is in principle possible to regard waves and particles as representations of the same underlying geometry, thereby resolving the problem of wave-particle duality. |
2404.14881 | Diego Rubiera-Garcia | Roberto V. Maluf, Gerardo Mora-P\'erez, Gonzalo J. Olmo, Diego
Rubiera-Garcia | Nonsingular, lump-like, scalar compact objects in $(2+1)$-dimensional
Einstein gravity | 9 pages, 3 figures | Universe 2024, 10(6), 258 | 10.3390/universe10060258 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study the space-time geometry generated by coupling a free scalar field
with a non-canonical kinetic term to General Relativity in $(2+1)$ dimensions.
After identifying a family of scalar Lagrangians that yield exact analytical
solutions in static and circularly symmetric scenarios, we classify the various
types o... | [
{
"created": "Tue, 23 Apr 2024 10:08:08 GMT",
"version": "v1"
}
] | 2024-06-25 | [
[
"Maluf",
"Roberto V.",
""
],
[
"Mora-Pérez",
"Gerardo",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
]
] | We study the space-time geometry generated by coupling a free scalar field with a non-canonical kinetic term to General Relativity in $(2+1)$ dimensions. After identifying a family of scalar Lagrangians that yield exact analytical solutions in static and circularly symmetric scenarios, we classify the various types of ... |
2204.05047 | Mohammed Khalil | Mohammed Khalil, Alessandra Buonanno, Jan Steinhoff, Justin Vines | Energetics and scattering of gravitational two-body systems at fourth
post-Minkowskian order | 21 pages, 9 figures, 1 ancillary file. v2: Matches published version.
v3: correction in Appendix A | null | 10.1103/PhysRevD.106.024042 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Upcoming observational runs of the LIGO-Virgo-KAGRA collaboration, and future
gravitational-wave (GW) detectors on the ground and in space, require waveform
models more accurate than currently available. High-precision waveform models
can be developed by improving the analytical description of compact binary
dynamics... | [
{
"created": "Mon, 11 Apr 2022 12:33:17 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Jul 2022 15:47:32 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Jan 2024 17:46:26 GMT",
"version": "v3"
}
] | 2024-01-24 | [
[
"Khalil",
"Mohammed",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Steinhoff",
"Jan",
""
],
[
"Vines",
"Justin",
""
]
] | Upcoming observational runs of the LIGO-Virgo-KAGRA collaboration, and future gravitational-wave (GW) detectors on the ground and in space, require waveform models more accurate than currently available. High-precision waveform models can be developed by improving the analytical description of compact binary dynamics a... |
gr-qc/9701040 | Gungwong Kang | Gungwon Kang | Quantum Aspects of Ergoregion Instability | 20 pages, latex, 2 figures, epsfig.sty; one rather important argument
corrected, but main results remained, version to appear in Phys. Rev. D | Phys.Rev.D55:7563-7573,1997 | 10.1103/PhysRevD.55.7563 | RRI-97-2 | gr-qc hep-th | null | It has been known classically that a star with an ergoregion but no event
horizon is unstable to the emission of scalar, electromagnetic and
gravitational waves. This classical ergoregion instability is characterized by
complex frequency modes. We show how to canonically quantize a neutral scalar
field in the presenc... | [
{
"created": "Sat, 18 Jan 1997 06:54:13 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Mar 1997 12:18:17 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Kang",
"Gungwon",
""
]
] | It has been known classically that a star with an ergoregion but no event horizon is unstable to the emission of scalar, electromagnetic and gravitational waves. This classical ergoregion instability is characterized by complex frequency modes. We show how to canonically quantize a neutral scalar field in the presence ... |
gr-qc/0506106 | Thomas Buchert | G.F.R. Ellis and T. Buchert | The universe seen at different scales | 17 pages; matches published version in Phys. Lett. A (Einstein
special issue) | Phys.Lett. A347 (2005) 38-46 | 10.1016/j.physleta.2005.06.087 | null | gr-qc astro-ph | null | A large-scale smoothed-out model of the universe ignores small-scale
inhomogeneities, but the averaged effects of those inhomogeneities may alter
both observational and dynamical relations at the larger scale. This article
discusses these effects, and comments briefly on the relation to gravitational
entropy.
| [
{
"created": "Tue, 21 Jun 2005 14:30:57 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Jul 2005 08:35:08 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Ellis",
"G. F. R.",
""
],
[
"Buchert",
"T.",
""
]
] | A large-scale smoothed-out model of the universe ignores small-scale inhomogeneities, but the averaged effects of those inhomogeneities may alter both observational and dynamical relations at the larger scale. This article discusses these effects, and comments briefly on the relation to gravitational entropy. |
1111.0961 | Remigiusz Durka | R. Durka | Immirzi parameter and Noether charges in first order gravity | 17 pages, (new template, corrected typos), to appear in Proceedings
of "Quantum Theory and Symmetries 7" Prague, Journal of Physics: Conference
Series (JPCS) | null | 10.1088/1742-6596/343/1/012032 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The framework of SO(3,2) constrained BF theory applied to gravity makes it
possible to generalize formulas for gravitational diffeomorphic Noether charges
(mass, angular momentum, and entropy). It extends Wald's approach to the case
of first order gravity with a negative cosmological constant, the Holst
modification ... | [
{
"created": "Thu, 3 Nov 2011 19:53:13 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Nov 2011 20:51:14 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"Durka",
"R.",
""
]
] | The framework of SO(3,2) constrained BF theory applied to gravity makes it possible to generalize formulas for gravitational diffeomorphic Noether charges (mass, angular momentum, and entropy). It extends Wald's approach to the case of first order gravity with a negative cosmological constant, the Holst modification an... |
1505.03551 | Edward Anderson | Edward Anderson | Explicit partial and functional differential equations for beables or
observables | 9 pages including 4 figures: minor presentational upgrades and
further references added | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide explicit partial differential equations - in finite cases - and
functional differential equations - in field-theoretic cases - which determine
observables or beables in the senses of Kucha\v{r} and of Dirac. These cover a
wide range of relational mechanics models as well as Electromagnetism,
Yang--Mills Th... | [
{
"created": "Wed, 13 May 2015 20:58:41 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Dec 2018 23:30:15 GMT",
"version": "v2"
}
] | 2018-12-07 | [
[
"Anderson",
"Edward",
""
]
] | We provide explicit partial differential equations - in finite cases - and functional differential equations - in field-theoretic cases - which determine observables or beables in the senses of Kucha\v{r} and of Dirac. These cover a wide range of relational mechanics models as well as Electromagnetism, Yang--Mills Theo... |
gr-qc/0603082 | Roldao da Rocha | Roldao da Rocha and E. Capelas de Oliveira | Conformal Klein-Gordon equations and quasinormal modes | 13 pages, 10 figures | Int.J.Theor.Phys.46:301-317,2007 | 10.1007/s10773-006-9238-5 | null | gr-qc | null | Using conformal coordinates associated with conformal relativity --
associated with de Sitter spacetime homeomorphic projection into Minkowski
spacetime -- we obtain a conformal Klein-Gordon partial differential equation,
which is intimately related to the production of quasi-normal modes (QNMs)
oscillations, in the ... | [
{
"created": "Mon, 20 Mar 2006 20:37:35 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"da Rocha",
"Roldao",
""
],
[
"de Oliveira",
"E. Capelas",
""
]
] | Using conformal coordinates associated with conformal relativity -- associated with de Sitter spacetime homeomorphic projection into Minkowski spacetime -- we obtain a conformal Klein-Gordon partial differential equation, which is intimately related to the production of quasi-normal modes (QNMs) oscillations, in the co... |
gr-qc/0003116 | Philippe Droz-Vincent | Philippe Droz-Vincent (Univ. P. et M. Curie) | Mode solutions of the Klein-Gordon equation in warped spacetimes | 20 pages, LaTeX file, nofigure | Class.Quant.Grav. 18 (2001) 207-224 | 10.1088/0264-9381/18/2/301 | null | gr-qc | null | In order to reduce the Klein-Gordon equation (with minimal coupling), we
introduce a generalization of the so-called "mode solutions" that are
well-known in the special case of a Robertson-Walker universe. After separation
of the variables, we end up with a partial differential equation in lower
dimension. A reduced ... | [
{
"created": "Fri, 31 Mar 2000 18:30:18 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Droz-Vincent",
"Philippe",
"",
"Univ. P. et M. Curie"
]
] | In order to reduce the Klein-Gordon equation (with minimal coupling), we introduce a generalization of the so-called "mode solutions" that are well-known in the special case of a Robertson-Walker universe. After separation of the variables, we end up with a partial differential equation in lower dimension. A reduced ve... |
gr-qc/9611040 | Kim Sang Pyo | Sang Pyo Kim(Kunsan National University, Dept. of Physics) | Problem of Unitarity and Quantum Corrections in Semiclassical Quantum
Gravity | Replaced with the version published in PRD | Phys.Rev.D55:7511-7517,1997 | 10.1103/PhysRevD.55.7511 | null | gr-qc hep-th | null | Using both the Born-Oppenheimer idea and the de Broglie-Bohm interpretation
of wavefunction we represent in a different way the semiclassical quantum
gravity from the Wheeler-DeWitt equation in an oscillating regime which can
preserve completely the unitary quantum evolution of a matter field at the
expense of a nonl... | [
{
"created": "Thu, 14 Nov 1996 11:55:25 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Nov 1996 07:46:07 GMT",
"version": "v2"
},
{
"created": "Wed, 19 Feb 1997 05:24:01 GMT",
"version": "v3"
},
{
"created": "Thu, 12 Jun 1997 08:27:32 GMT",
"version": "v4"
}
] | 2014-11-17 | [
[
"Kim",
"Sang Pyo",
"",
"Kunsan National University, Dept. of Physics"
]
] | Using both the Born-Oppenheimer idea and the de Broglie-Bohm interpretation of wavefunction we represent in a different way the semiclassical quantum gravity from the Wheeler-DeWitt equation in an oscillating regime which can preserve completely the unitary quantum evolution of a matter field at the expense of a nonlin... |
2105.04039 | Shohei Aoyama | Shohei Aoyama, Daisuke Yamauchi, Maresuke Shiraishi and Masami Ouchi | Gaia 400,894 QSO constraint on the energy density of low-frequency
gravitational waves | Submitted to Physical Review D | null | null | null | gr-qc astro-ph.CO astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Low frequency gravitational waves (GWs) are keys to understanding
cosmological inflation and super massive blackhole (SMBH) formation via
blackhole mergers, while it is difficult to identify the low frequency GWs with
ground-based GW experiments such as the advanced LIGO (aLIGO) and VIRGO due to
the seismic noise. Al... | [
{
"created": "Sun, 9 May 2021 22:26:10 GMT",
"version": "v1"
}
] | 2021-05-11 | [
[
"Aoyama",
"Shohei",
""
],
[
"Yamauchi",
"Daisuke",
""
],
[
"Shiraishi",
"Maresuke",
""
],
[
"Ouchi",
"Masami",
""
]
] | Low frequency gravitational waves (GWs) are keys to understanding cosmological inflation and super massive blackhole (SMBH) formation via blackhole mergers, while it is difficult to identify the low frequency GWs with ground-based GW experiments such as the advanced LIGO (aLIGO) and VIRGO due to the seismic noise. Alth... |
2304.12278 | Antonino Marciano | Xuan-Lin Su, Alioscia Hamma and Antonino Marciano | On the irrelevance of the scrambling power of gravity for black hole
radiation | 90 pages | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black holes are a recently observed theoretical prediction of General
Relativity, characterized by event horizons, from which information cannot
escape. Examined through the lenses of quantum mechanics, they can radiate at a
definite temperature inverse to their mass and horizon radius. Hawking
radiation, whose spect... | [
{
"created": "Mon, 24 Apr 2023 17:17:28 GMT",
"version": "v1"
},
{
"created": "Wed, 3 May 2023 12:26:28 GMT",
"version": "v2"
}
] | 2023-05-04 | [
[
"Su",
"Xuan-Lin",
""
],
[
"Hamma",
"Alioscia",
""
],
[
"Marciano",
"Antonino",
""
]
] | Black holes are a recently observed theoretical prediction of General Relativity, characterized by event horizons, from which information cannot escape. Examined through the lenses of quantum mechanics, they can radiate at a definite temperature inverse to their mass and horizon radius. Hawking radiation, whose spectru... |
gr-qc/9803099 | Masaru Siino | Masaru Siino | Topological Appearance of Event Horizon: What Is the Topology of the
Event Horizon That We Can See? | 53 pages, revtex, Published in Prog. Theo. Phys. vol.99, 13 figures | Prog.Theor.Phys. 99 (1998) 1-32 | 10.1143/PTP.99.1 | null | gr-qc | null | The topology of the event horizon (TOEH) is usually believed to be a sphere.
Nevertheless, some numerical simulations of gravitational collapse with a
toroidal event horizon or the collision of event horizons are reported.
Considering the indifferentiability of the event horizon (EH), we see that such
non-trivial TOE... | [
{
"created": "Tue, 31 Mar 1998 13:17:59 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Siino",
"Masaru",
""
]
] | The topology of the event horizon (TOEH) is usually believed to be a sphere. Nevertheless, some numerical simulations of gravitational collapse with a toroidal event horizon or the collision of event horizons are reported. Considering the indifferentiability of the event horizon (EH), we see that such non-trivial TOEHs... |
gr-qc/0701118 | Ion I. Cotaescu | Ion I Cot\u{a}escu | Dirac fermions in de Sitter and anti-de Sitter backgrounds | 59 pages | Rom.J.Phys.52:895-940,2007 | null | null | gr-qc | null | Starting with a new theory of symmetries generated by isometries in field
theories with spin, one finds the generators of the spinor representation in
backgrounds with a given symmetry. In this manner one obtains a collection of
conserved operators from which one can chose the complete sets of commuting
operators def... | [
{
"created": "Mon, 22 Jan 2007 11:44:35 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Feb 2007 09:48:26 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Cotăescu",
"Ion I",
""
]
] | Starting with a new theory of symmetries generated by isometries in field theories with spin, one finds the generators of the spinor representation in backgrounds with a given symmetry. In this manner one obtains a collection of conserved operators from which one can chose the complete sets of commuting operators defin... |
1402.0718 | Luciano Vanzo | Giovanni Acquaviva, Luca Bonetti, Luciano Vanzo and Sergio Zerbini | Vacuum fluctuation of conformally coupled scalar field in FLRW
space-times | 17 pages, standard LateX document | Phys. Rev. D 89, 084031 (2014) | 10.1103/PhysRevD.89.084031 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The regularized vacuum fluctuation related to a conformally coupled massless
scalar field defined on a space-time with dynamical horizon is computed with
respect a radially moving observer in a generic flat Friedmann-Robertson-Walker
space-time. Two simple measurement prescriptions are given in order to remove
the am... | [
{
"created": "Tue, 4 Feb 2014 13:01:44 GMT",
"version": "v1"
}
] | 2014-04-23 | [
[
"Acquaviva",
"Giovanni",
""
],
[
"Bonetti",
"Luca",
""
],
[
"Vanzo",
"Luciano",
""
],
[
"Zerbini",
"Sergio",
""
]
] | The regularized vacuum fluctuation related to a conformally coupled massless scalar field defined on a space-time with dynamical horizon is computed with respect a radially moving observer in a generic flat Friedmann-Robertson-Walker space-time. Two simple measurement prescriptions are given in order to remove the ambi... |
1505.06123 | Paul Tod | Paul Tod | Some geometry of de Sitter space | 10 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this expository note, I present some basic geometric and twistor theoretic
facts about de Sitter space leading up to a discussion of Penrose's quasi-local
mass construction for linear gravity theory in the de Sitter background. The
corresponding results for Minkowski space and anti--de Sitter space are
familiar an... | [
{
"created": "Fri, 22 May 2015 15:35:00 GMT",
"version": "v1"
}
] | 2015-05-25 | [
[
"Tod",
"Paul",
""
]
] | In this expository note, I present some basic geometric and twistor theoretic facts about de Sitter space leading up to a discussion of Penrose's quasi-local mass construction for linear gravity theory in the de Sitter background. The corresponding results for Minkowski space and anti--de Sitter space are familiar and ... |
1611.02514 | Roberto Peron Dr. | Carmen Pardini, Luciano Anselmo, David Massimo Lucchesi, Roberto Peron | Estimation of the Perturbing Accelerations Induced on the LARES
Satellite by Neutral Atmosphere Drag | null | null | null | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The laser-ranged satellite LARES is expected to provide new refined
measurements of relativistic physics, as well as significant contributions to
space geodesy and geophysics. The very low area-to-mass ratio of this passive
and dense satellite was chosen to reduce as much as possible the disturbing
effects of non-gra... | [
{
"created": "Tue, 8 Nov 2016 13:35:43 GMT",
"version": "v1"
}
] | 2016-11-09 | [
[
"Pardini",
"Carmen",
""
],
[
"Anselmo",
"Luciano",
""
],
[
"Lucchesi",
"David Massimo",
""
],
[
"Peron",
"Roberto",
""
]
] | The laser-ranged satellite LARES is expected to provide new refined measurements of relativistic physics, as well as significant contributions to space geodesy and geophysics. The very low area-to-mass ratio of this passive and dense satellite was chosen to reduce as much as possible the disturbing effects of non-gravi... |
1712.01654 | De-Chang Dai | De-Chang Dai, Chunyu Lu | Can $\Lambda$CDM model reproduce MOND-like behavior? | 9 figures, accepted by Phys. Rev. D | null | 10.1103/PhysRevD.96.124016 | null | gr-qc astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is usually believed that MOND can describe the galactic rotational curves
with only baryonic matter and without any dark matter very well, while the
$\Lambda$CDM model is expected to have difficulty in reproducing MOND-like
behavior. Here, we use EAGLE's data to learn whether the $\Lambda$CDM model can
reproduce M... | [
{
"created": "Fri, 1 Dec 2017 23:39:22 GMT",
"version": "v1"
}
] | 2018-01-17 | [
[
"Dai",
"De-Chang",
""
],
[
"Lu",
"Chunyu",
""
]
] | It is usually believed that MOND can describe the galactic rotational curves with only baryonic matter and without any dark matter very well, while the $\Lambda$CDM model is expected to have difficulty in reproducing MOND-like behavior. Here, we use EAGLE's data to learn whether the $\Lambda$CDM model can reproduce MON... |
gr-qc/9408005 | Francois Englert | F.Englert | The Black Hole History in Tamed Vacuum | 29 pages, ULB-TH 15/94 phyzzx file | null | null | null | gr-qc hep-th | null | Quantum physics at scales large compared to the Planck scale is described in
the framework of classical space-time geometries. A criterion for selecting
these backgrounds out of quantized gravity is proposed. It leads to an
instability of the black-hole geometry, as experienced by motion across the
horizon, against e... | [
{
"created": "Wed, 3 Aug 1994 13:16:15 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"Englert",
"F.",
""
]
] | Quantum physics at scales large compared to the Planck scale is described in the framework of classical space-time geometries. A criterion for selecting these backgrounds out of quantized gravity is proposed. It leads to an instability of the black-hole geometry, as experienced by motion across the horizon, against emi... |
1511.04149 | Takahisa Igata | Takahisa Igata, Shinya Tomizawa | Gravitational two solitons in Levi-Civita spacetime | 17 pages, 4 figures, version to be published in Classical and Quantum
Gravity | Class. Quant. Grav. 33, 185005 (2016) | 10.1088/0264-9381/33/18/185005 | RUP-15-25 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Applying the Pomeransky inverse scattering method to the four-dimensional
vacuum Einstein equations and using the Levi-Civita solution as a seed, we
construct a two-soliton solution with cylindrical symmetry. In our previous
work, we constructed the one-soliton solution with a real pole and showed that
the singularit... | [
{
"created": "Fri, 13 Nov 2015 03:27:51 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Sep 2016 02:21:46 GMT",
"version": "v2"
}
] | 2016-09-05 | [
[
"Igata",
"Takahisa",
""
],
[
"Tomizawa",
"Shinya",
""
]
] | Applying the Pomeransky inverse scattering method to the four-dimensional vacuum Einstein equations and using the Levi-Civita solution as a seed, we construct a two-soliton solution with cylindrical symmetry. In our previous work, we constructed the one-soliton solution with a real pole and showed that the singularitie... |
2406.19442 | Gregorio Carullo | Gregorio Carullo | Ringdown amplitudes of nonspinning eccentric binaries | 20 pages, 11 figures | v2: added 320 mode and public data release;
journal submitted version | null | null | Virgo document number: VIR-0579A-24 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Closed-form expressions for the ringdown complex amplitudes of nonspinning
unequal-mass binaries in arbitrarily eccentric orbits are presented. They are
built upon 237 numerical simulations contained within the RIT catalog, through
the parameterisation introduced in [Phys. Rev. Lett. 132, 101401]. Global fits
for the... | [
{
"created": "Thu, 27 Jun 2024 18:00:01 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Aug 2024 15:43:12 GMT",
"version": "v2"
}
] | 2024-08-16 | [
[
"Carullo",
"Gregorio",
""
]
] | Closed-form expressions for the ringdown complex amplitudes of nonspinning unequal-mass binaries in arbitrarily eccentric orbits are presented. They are built upon 237 numerical simulations contained within the RIT catalog, through the parameterisation introduced in [Phys. Rev. Lett. 132, 101401]. Global fits for the c... |
gr-qc/9309003 | Jorge Pullin | Jorge Pullin (Editor) | MATTERS OF GRAVITY, a newsletter for the gravity community, number 2 | Number 2 Fall 1993 (18 pages plain TeX) | null | null | null | gr-qc | null | Table of contents:
Editorial 1
Correspondents 3
Some recent work in general relativistic Astrophysics 4
Two dimensional black holes 6
Resonant-mass gravitational wave detectors: an update 8
Universality and scaling in gravitational collapse 9
Gravitational Wave memories upgraded 11
Conference report: ... | [
{
"created": "Thu, 2 Sep 1993 03:22:13 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pullin",
"Jorge",
"",
"Editor"
]
] | Table of contents: Editorial 1 Correspondents 3 Some recent work in general relativistic Astrophysics 4 Two dimensional black holes 6 Resonant-mass gravitational wave detectors: an update 8 Universality and scaling in gravitational collapse 9 Gravitational Wave memories upgraded 11 Conference report: quantum aspects of... |
1102.3022 | Ian G. Moss | Ian G Moss | Black holes with current loops revisited | 10 pages, 5 figures. v2: 3 new references, revisions in Sect. 3 | null | 10.1103/PhysRevD.83.124046 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The electromagnetic field around a Kerr black hole inside a current loop is
sometimes used as the basis of a toy model for discussing the properties of
particle orbits near astrophysical black holes. The motivation for the present
paper is to correct the published solution to Maxwell's equations with a
charged curren... | [
{
"created": "Tue, 15 Feb 2011 10:13:45 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Jun 2011 15:17:44 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"Moss",
"Ian G",
""
]
] | The electromagnetic field around a Kerr black hole inside a current loop is sometimes used as the basis of a toy model for discussing the properties of particle orbits near astrophysical black holes. The motivation for the present paper is to correct the published solution to Maxwell's equations with a charged current ... |
2303.03924 | Andreu Maso-Ferrando | Renan B. Magalh\~aes, Andreu Mas\'o-Ferrando, Gonzalo J. Olmo, Lu\'is
C. B. Crispino | Asymmetric wormholes in Palatini $f(\mathcal{R})$ gravity: Energy
conditions, absorption and quasibound states | 18 pages, 13 figures, revtex4-2 style | null | 10.1103/PhysRevD.108.024063 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We investigate the absorption properties of reflection-asymmetric wormholes
constructed via the thin-shell formalism in Palatini $f({\cal R})$ gravity.
Such wormholes come from the matching of two Reissner-Nordstr\"om spacetimes at
a time-like hypersurface (shell), which, according to the junction conditions
in Palat... | [
{
"created": "Tue, 7 Mar 2023 14:31:24 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Sep 2023 13:22:48 GMT",
"version": "v2"
}
] | 2024-05-30 | [
[
"Magalhães",
"Renan B.",
""
],
[
"Masó-Ferrando",
"Andreu",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Crispino",
"Luís C. B.",
""
]
] | We investigate the absorption properties of reflection-asymmetric wormholes constructed via the thin-shell formalism in Palatini $f({\cal R})$ gravity. Such wormholes come from the matching of two Reissner-Nordstr\"om spacetimes at a time-like hypersurface (shell), which, according to the junction conditions in Palatin... |
1105.5842 | Hideyuki Tagoshi | Sanjeev Dhurandhar, Hideyuki Tagoshi, Yuta Okada, Nobuyuki Kanda,
Hirotaka Takahashi | The cross-correlation search for a hot spot of gravitational waves | 7 pages, 2 figures | null | 10.1103/PhysRevD.84.083007 | OU-TAP 314 | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cross-correlation search has been previously applied to map the
gravitational wave (GW) stochastic background in the sky and also to target GW
from rotating neutron stars/pulsars. Here we investigate how the
cross-correlation method can be used to target a small region in the sky
spanning at most a few pixels, wh... | [
{
"created": "Mon, 30 May 2011 00:33:20 GMT",
"version": "v1"
}
] | 2013-05-29 | [
[
"Dhurandhar",
"Sanjeev",
""
],
[
"Tagoshi",
"Hideyuki",
""
],
[
"Okada",
"Yuta",
""
],
[
"Kanda",
"Nobuyuki",
""
],
[
"Takahashi",
"Hirotaka",
""
]
] | The cross-correlation search has been previously applied to map the gravitational wave (GW) stochastic background in the sky and also to target GW from rotating neutron stars/pulsars. Here we investigate how the cross-correlation method can be used to target a small region in the sky spanning at most a few pixels, wher... |
1706.03037 | Samuel Colin | Samuel Colin and Nelson Pinto-Neto | Quantum matter bounce with a dark energy expanding phase | 15 pages, 17 figures. Title changed, introduction, conclusion and
bibliography expanded to answer the questions of a referee. To be published
in Physical Review D | Phys. Rev. D 96, 063502 (2017) | 10.1103/PhysRevD.96.063502 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Analyzing quantum cosmological scenarios containing one scalar field with
exponential potential, we have obtained a universe model which realizes a
classical dust contraction from very large scales, the initial repeller of the
model, and moves to a stiff matter contraction near the singularity, which is
avoided due t... | [
{
"created": "Fri, 9 Jun 2017 16:51:53 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Aug 2017 08:03:34 GMT",
"version": "v2"
}
] | 2017-09-13 | [
[
"Colin",
"Samuel",
""
],
[
"Pinto-Neto",
"Nelson",
""
]
] | Analyzing quantum cosmological scenarios containing one scalar field with exponential potential, we have obtained a universe model which realizes a classical dust contraction from very large scales, the initial repeller of the model, and moves to a stiff matter contraction near the singularity, which is avoided due to ... |
gr-qc/0204083 | Emil Mottola | Paul R. Anderson, Carmen Molina-Paris, and Emil Mottola | Linear Response and the Validity of the Semi-Classical Approximation in
Gravity | 8 pages, LaTeX | null | null | LA-UR-02-2072 | gr-qc | null | We propose a quantitative test for the validity of the semi-classical
approximation in gravity, namely that the solutions to the semi-classical
equations should be stable to linearized perturbations, in the sense that no
gauge invariant perturbation should become unbounded in time. We show that a
self-consistent line... | [
{
"created": "Sat, 27 Apr 2002 00:40:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Anderson",
"Paul R.",
""
],
[
"Molina-Paris",
"Carmen",
""
],
[
"Mottola",
"Emil",
""
]
] | We propose a quantitative test for the validity of the semi-classical approximation in gravity, namely that the solutions to the semi-classical equations should be stable to linearized perturbations, in the sense that no gauge invariant perturbation should become unbounded in time. We show that a self-consistent linear... |
gr-qc/0310028 | Yousuke Itoh | Yousuke Itoh, Toshifumi Futamase | New derivation of a third post-Newtonian equation of motion for
relativistic compact binaries without ambiguity | 6 pages, No figure, Revised version,clarity improved, accepted for
publication in Phys. Rev. D.(R) | Phys.Rev. D68 (2003) 121501 | 10.1103/PhysRevD.68.121501 | null | gr-qc | null | A third post-Newtonian (3 PN) equation of motion for an inspiralling binary
consisting of two spherical compact stars with strong internal gravity is
derived under harmonic coordinate condition using the strong field point
particle limit. The equation of motion is complete in a sense that it is
Lorentz invariant in t... | [
{
"created": "Mon, 6 Oct 2003 13:29:28 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Jan 2004 10:29:14 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Itoh",
"Yousuke",
""
],
[
"Futamase",
"Toshifumi",
""
]
] | A third post-Newtonian (3 PN) equation of motion for an inspiralling binary consisting of two spherical compact stars with strong internal gravity is derived under harmonic coordinate condition using the strong field point particle limit. The equation of motion is complete in a sense that it is Lorentz invariant in the... |
2101.09431 | Lijing Shao | Rui Xu, Yong Gao, Lijing Shao | Signature of Lorentz Violation in Continuous Gravitational-Wave Spectra
of Ellipsoidal Neutron Stars | 8 pages, 4 figures; Invited research article to special issue
"Lorentz Violation in Astroparticles and Gravitational Waves", in press | Galaxies 2021, 9:12 | 10.3390/galaxies9010012 | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study effects of Lorentz-invariance violation on the rotation of neutron
stars (NSs) in the minimal gravitational Standard-Model Extension framework,
and calculate the quadrupole radiation generated by them. Aiming at testing
Lorentz invariance with observations of continuous gravitational waves (GWs)
from rotatin... | [
{
"created": "Sat, 23 Jan 2021 06:31:41 GMT",
"version": "v1"
}
] | 2021-02-01 | [
[
"Xu",
"Rui",
""
],
[
"Gao",
"Yong",
""
],
[
"Shao",
"Lijing",
""
]
] | We study effects of Lorentz-invariance violation on the rotation of neutron stars (NSs) in the minimal gravitational Standard-Model Extension framework, and calculate the quadrupole radiation generated by them. Aiming at testing Lorentz invariance with observations of continuous gravitational waves (GWs) from rotating ... |
1501.01985 | Constantinos Skordis | Ana Avilez-Lopez, Antonio Padilla, Paul M. Saffin and Constantinos
Skordis | The Parametrized Post-Newtonian-Vainshteinian Formalism | 26 pages, 1 figure. Few clarifications made according to referee's
comments. No change to the results. Matches published version | JCAP 06 (2015) 044 | 10.1088/1475-7516/2015/06/044 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Light degrees of freedom that modify gravity on cosmological scales must be
"screened" on solar system scales in order to be compatible with data. The
Vainshtein mechanism achieves this through a breakdown of classical
perturbation theory, as large interactions involving new degrees of freedom
become important below ... | [
{
"created": "Thu, 8 Jan 2015 21:07:01 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Jun 2015 06:13:15 GMT",
"version": "v2"
}
] | 2015-06-29 | [
[
"Avilez-Lopez",
"Ana",
""
],
[
"Padilla",
"Antonio",
""
],
[
"Saffin",
"Paul M.",
""
],
[
"Skordis",
"Constantinos",
""
]
] | Light degrees of freedom that modify gravity on cosmological scales must be "screened" on solar system scales in order to be compatible with data. The Vainshtein mechanism achieves this through a breakdown of classical perturbation theory, as large interactions involving new degrees of freedom become important below th... |
0709.1238 | Geusa Marques AMarques | Geusa de A. Marques and V. B. Bezerra | Corrections to the fine structure constant in higher dimensional global
monopole spacetime | No figures, 3 pages | null | null | null | gr-qc hep-th | null | In this paper we use the Generalized Uncertainty Principle in order to obtain
the corrections to the fine structure constant in (D+1)-dimensional global
monopole spacetime. The result is particularized to D-dimensional spacetime. We
also discuss the particular case D=3 corresponding to the (3+1)-dimensional
global mo... | [
{
"created": "Sun, 9 Sep 2007 01:10:25 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Sep 2007 14:14:06 GMT",
"version": "v2"
},
{
"created": "Thu, 3 Jan 2008 20:05:16 GMT",
"version": "v3"
},
{
"created": "Fri, 4 Jan 2008 13:21:47 GMT",
"version": "v4"
}
] | 2011-11-10 | [
[
"Marques",
"Geusa de A.",
""
],
[
"Bezerra",
"V. B.",
""
]
] | In this paper we use the Generalized Uncertainty Principle in order to obtain the corrections to the fine structure constant in (D+1)-dimensional global monopole spacetime. The result is particularized to D-dimensional spacetime. We also discuss the particular case D=3 corresponding to the (3+1)-dimensional global mono... |
2306.13845 | Christoph Adami | Christoph Adami (Michigan State University) | Stimulated Emission of Radiation and the Black Hole Information Problem | 40 pages, 21 figures | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | The quantum theory of black holes has opened up a window to study the
intersection of general relativity and quantum field theory, but perceived
paradoxes concerning the fate of classical information directed at a black hole
horizon, as well as concerning the unitarity of the evaporation process, have
led researchers... | [
{
"created": "Sat, 24 Jun 2023 03:05:48 GMT",
"version": "v1"
}
] | 2023-06-27 | [
[
"Adami",
"Christoph",
"",
"Michigan State University"
]
] | The quantum theory of black holes has opened up a window to study the intersection of general relativity and quantum field theory, but perceived paradoxes concerning the fate of classical information directed at a black hole horizon, as well as concerning the unitarity of the evaporation process, have led researchers t... |
1905.09973 | Jing Ren | Jing Ren | Anatomy of a thermal black hole mimicker | 25 pages, 3 figures, 1 table; minor corrections, matches published
version | Phys. Rev. D 100, 124012 (2019) | 10.1103/PhysRevD.100.124012 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We are entering a new era to test the strong gravity regime around
astrophysical black holes. The possibility that they are actually horizonless
ultracompact objects and then free from the information loss paradox can be
examined more closely with observational data. In this paper, we systematically
develop a thermal... | [
{
"created": "Thu, 23 May 2019 23:58:33 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Dec 2019 04:41:31 GMT",
"version": "v2"
}
] | 2019-12-11 | [
[
"Ren",
"Jing",
""
]
] | We are entering a new era to test the strong gravity regime around astrophysical black holes. The possibility that they are actually horizonless ultracompact objects and then free from the information loss paradox can be examined more closely with observational data. In this paper, we systematically develop a thermal g... |
gr-qc/0211088 | Farid Ya. Khalili | F.Ya.Khalili | Quantum speedmeter and laser interferometric gravitational-wave antennae | 20 pages, 6 figures drawn in TeX | null | null | null | gr-qc | null | A new topology of laser interferometric gravitational-wave antenna is
considered. It is based on two schemes: {\em quantum speedmeter} and {\em
zero-area Sagnac interferometer} and allows to obtain sensitivity better than
the Standard Quantum Limit in wide band without any large-scale modifications
of the standard to... | [
{
"created": "Tue, 26 Nov 2002 19:39:52 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Khalili",
"F. Ya.",
""
]
] | A new topology of laser interferometric gravitational-wave antenna is considered. It is based on two schemes: {\em quantum speedmeter} and {\em zero-area Sagnac interferometer} and allows to obtain sensitivity better than the Standard Quantum Limit in wide band without any large-scale modifications of the standard topo... |
1806.08347 | Luc Blanchet | Luc Blanchet and Athanassios S. Fokas | Equations of motion of self-gravitating $N$-body systems in the first
post-Minkowskian approximation | 30 pages, 2 figures | Phys. Rev. D 98, 084005 (2018) | 10.1103/PhysRevD.98.084005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the problem of the equations of motion of a system of $N$
self-interacting massive particles (without spins) in the first
post-Minkowskian (1PM) approximation of general relativity. We write the
equations of motion, gravitational field and associated conserved integrals of
the motion in a form suitable for... | [
{
"created": "Thu, 21 Jun 2018 17:53:36 GMT",
"version": "v1"
}
] | 2018-10-17 | [
[
"Blanchet",
"Luc",
""
],
[
"Fokas",
"Athanassios S.",
""
]
] | We revisit the problem of the equations of motion of a system of $N$ self-interacting massive particles (without spins) in the first post-Minkowskian (1PM) approximation of general relativity. We write the equations of motion, gravitational field and associated conserved integrals of the motion in a form suitable for c... |
2312.15183 | Albert Munyeshyaka Mr | Albert Munyeshyaka, Joseph Ntahompagaze, Tom Mutabazi and Manasse.R
Mbonye | On covariant perturbations with scalar field in modified Gauss-Bonnet
gravity | 36 pages, 14 figures. This Article was accepted for publication in
European Physical Journal C (EPJC) on December 22, 2023 | null | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We investigate cosmological perturbations of f(G) gravity in the presence of
a scalar field. Using the 1 + 3 covariant formalism, we present the energy
overdensity perturbation equations responsible for large scale structure
formation. After applying harmonic decomposition method together with the
redshift transforma... | [
{
"created": "Sat, 23 Dec 2023 07:43:24 GMT",
"version": "v1"
}
] | 2023-12-27 | [
[
"Munyeshyaka",
"Albert",
""
],
[
"Ntahompagaze",
"Joseph",
""
],
[
"Mutabazi",
"Tom",
""
],
[
"Mbonye",
"Manasse. R",
""
]
] | We investigate cosmological perturbations of f(G) gravity in the presence of a scalar field. Using the 1 + 3 covariant formalism, we present the energy overdensity perturbation equations responsible for large scale structure formation. After applying harmonic decomposition method together with the redshift transformati... |
1109.5224 | Richard O'Shaughnessy | R. O'Shaughnessy (1), B. Vaishnav (2), J. Healy (3), Z. Meeks (3), D.
Shoemaker (3) ((1) University of Wisconsin, Milwaukee, (2) Georgia Southern
University, (3) Center for Relativistic Astrophysics, Georgia Tech) | Efficient asymptotic frame selection for binary black hole spacetimes
using asymptotic radiation | Submitted to PRD | null | 10.1103/PhysRevD.84.124002 | LIGO DCC P1100113 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Previous studies have demonstrated that gravitational radiation reliably
encodes information about the natural emission direction of the source (e.g.,
the orbital plane). In this paper, we demonstrate that these orientations can
be efficiently estimated by the principal axes of <L_a L_b>, an average of the
action of ... | [
{
"created": "Sat, 24 Sep 2011 02:37:16 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"O'Shaughnessy",
"R.",
""
],
[
"Vaishnav",
"B.",
""
],
[
"Healy",
"J.",
""
],
[
"Meeks",
"Z.",
""
],
[
"Shoemaker",
"D.",
""
]
] | Previous studies have demonstrated that gravitational radiation reliably encodes information about the natural emission direction of the source (e.g., the orbital plane). In this paper, we demonstrate that these orientations can be efficiently estimated by the principal axes of <L_a L_b>, an average of the action of ro... |
gr-qc/0412009 | Warren G. Anderson | Warren G. Anderson, Eanna E. Flanagan, Adrian C. Ottewill | Quasi-local contribution to the gravitational self-force | 22 pages, revtex4, submitted to PRD | Phys.Rev. D71 (2005) 024036 | 10.1103/PhysRevD.71.024036 | null | gr-qc | null | The gravitational self-force on a point particle moving in a vacuum
background spacetime can be expressed as an integral over the past worldline of
the particle, the so-called tail term. In this paper, we consider that piece of
the self-force obtained by integrating over a portion of the past worldline
that extends a... | [
{
"created": "Thu, 2 Dec 2004 21:16:22 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Anderson",
"Warren G.",
""
],
[
"Flanagan",
"Eanna E.",
""
],
[
"Ottewill",
"Adrian C.",
""
]
] | The gravitational self-force on a point particle moving in a vacuum background spacetime can be expressed as an integral over the past worldline of the particle, the so-called tail term. In this paper, we consider that piece of the self-force obtained by integrating over a portion of the past worldline that extends a p... |
1907.12517 | Hao Wei | Zhong-Xi Yu, Shou-Long Li, Hao Wei | Lemaitre-Tolman-Bondi Static Universe in Rastall-like Gravity | 14 pages, revtex4; v2: discussions added, Nucl. Phys. B in press; v3:
published version | Nucl. Phys. B 960 (2020) 115179 | 10.1016/j.nuclphysb.2020.115179 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we try to obtain a stable Lemaitre-Tolman-Bondi (LTB) static
universe, which is spherically symmetric and radially inhomogeneous. However,
this is not an easy task, and fails in general relativity (GR) and various
modified gravity theories, because the corresponding LTB static universes must
reduce to t... | [
{
"created": "Mon, 29 Jul 2019 16:45:00 GMT",
"version": "v1"
},
{
"created": "Sun, 6 Sep 2020 07:36:00 GMT",
"version": "v2"
},
{
"created": "Wed, 28 Oct 2020 04:00:00 GMT",
"version": "v3"
}
] | 2020-10-29 | [
[
"Yu",
"Zhong-Xi",
""
],
[
"Li",
"Shou-Long",
""
],
[
"Wei",
"Hao",
""
]
] | In this work, we try to obtain a stable Lemaitre-Tolman-Bondi (LTB) static universe, which is spherically symmetric and radially inhomogeneous. However, this is not an easy task, and fails in general relativity (GR) and various modified gravity theories, because the corresponding LTB static universes must reduce to the... |
2012.04381 | Banafsheh Beheshtipour | Banafsheh Beheshtipour, Maria Alessandra Papa | Deep learning for clustering of continuous gravitational wave candidates
II: identification of low-SNR candidates | null | Phys. Rev. D 103, 064027 (2021) | 10.1103/PhysRevD.103.064027 | null | gr-qc astro-ph.HE cs.LG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Broad searches for continuous gravitational wave signals rely on hierarchies
of follow-up stages for candidates above a given significance threshold. An
important step to simplify these follow-ups and reduce the computational cost
is to bundle together in a single follow-up nearby candidates. This step is
called clus... | [
{
"created": "Tue, 8 Dec 2020 11:54:08 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Feb 2021 15:39:38 GMT",
"version": "v2"
}
] | 2021-03-24 | [
[
"Beheshtipour",
"Banafsheh",
""
],
[
"Papa",
"Maria Alessandra",
""
]
] | Broad searches for continuous gravitational wave signals rely on hierarchies of follow-up stages for candidates above a given significance threshold. An important step to simplify these follow-ups and reduce the computational cost is to bundle together in a single follow-up nearby candidates. This step is called cluste... |
gr-qc/0304096 | Pia Astone | Pia Astone, Giulio D'Agostini, Sabrina D'Antonio | Bayesian model comparison applied to the Explorer-Nautilus 2001
coincidence data | 16 pages, 4 figures. Presented at the GWDAW2002 conference, held in
Kyoto on Dec.,2002. This version includes comments by the referees of CQG,
which has accepted the paper for pubblication in the special issue of the
conference. In particular, note that in Eq. 12 there was a typeset error. As
suggested by one o... | Class.Quant.Grav. 20 (2003) S769-S784 | 10.1088/0264-9381/20/17/320 | null | gr-qc astro-ph physics.data-an | null | Bayesian reasoning is applied to the data by the ROG Collaboration, in which
gravitational wave (g.w.) signals are searched for in a coincidence experiment
between Explorer and Nautilus. The use of Bayesian reasoning allows, under well
defined hypotheses, even tiny pieces of evidence in favor of each model to be
extr... | [
{
"created": "Thu, 24 Apr 2003 21:39:47 GMT",
"version": "v1"
},
{
"created": "Sun, 27 Apr 2003 08:47:29 GMT",
"version": "v2"
},
{
"created": "Mon, 16 Jun 2003 10:39:46 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Astone",
"Pia",
""
],
[
"D'Agostini",
"Giulio",
""
],
[
"D'Antonio",
"Sabrina",
""
]
] | Bayesian reasoning is applied to the data by the ROG Collaboration, in which gravitational wave (g.w.) signals are searched for in a coincidence experiment between Explorer and Nautilus. The use of Bayesian reasoning allows, under well defined hypotheses, even tiny pieces of evidence in favor of each model to be extrac... |
1812.07373 | Mohammad Nouri-Zonoz | R. Gharechahi, J. Koohbor and M. Nouri-Zonoz | General relativistic analogs of Poisson's equation and gravitational
binding energy | 21 pages, REVTex, Accepted for publication in Physical Review D | Phys. Rev. D 99, 084046 (2019) | 10.1103/PhysRevD.99.084046 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Employing the quasi-Maxwell form of the Einstein field equations in the
context of gravitoelectromagnetism, we introduce a general relativistic analog
of Poisson's equation as a natural outcome of the corresponding spacetime
decomposition formalism. The active density introduced in this formalism, apart
from the matt... | [
{
"created": "Sat, 8 Dec 2018 12:02:44 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Apr 2019 09:51:41 GMT",
"version": "v2"
}
] | 2020-05-07 | [
[
"Gharechahi",
"R.",
""
],
[
"Koohbor",
"J.",
""
],
[
"Nouri-Zonoz",
"M.",
""
]
] | Employing the quasi-Maxwell form of the Einstein field equations in the context of gravitoelectromagnetism, we introduce a general relativistic analog of Poisson's equation as a natural outcome of the corresponding spacetime decomposition formalism. The active density introduced in this formalism, apart from the matter... |
0706.3080 | Kohkichi Konno | Kohkichi Konno, Toyoki Matsuyama, Satoshi Tanda | Does a black hole rotate in Chern-Simons modified gravity? | 4 pages, Accepted for publication in Phys. Rev. D | Phys.Rev.D76:024009,2007 | 10.1103/PhysRevD.76.024009 | null | gr-qc | null | Rotating black hole solutions in the (3+1)-dimensional Chern-Simons modified
gravity theory are discussed by taking account of perturbation around the
Schwarzschild solution. The zenith-angle dependence of a metric function
related to the frame-dragging effect is determined from a constraint equation
independently of... | [
{
"created": "Thu, 21 Jun 2007 04:04:09 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Konno",
"Kohkichi",
""
],
[
"Matsuyama",
"Toyoki",
""
],
[
"Tanda",
"Satoshi",
""
]
] | Rotating black hole solutions in the (3+1)-dimensional Chern-Simons modified gravity theory are discussed by taking account of perturbation around the Schwarzschild solution. The zenith-angle dependence of a metric function related to the frame-dragging effect is determined from a constraint equation independently of a... |
2310.07515 | \'Alvaro Parra L\'opez | Jose A. R. Cembranos, Luis J. Garay, \'Alvaro Parra-L\'opez and Jose
M. S\'anchez Vel\'azquez | Vector dark matter production during inflation and reheating | 23 pages, 9 figures | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational particle production of spectator fields due to the expansion
universe during the inflationary and reheating phases of the early universe is
of particular interest in the context of dark matter, since it allows to
constrain the properties of the dark candidate by comparing the density of
particles produc... | [
{
"created": "Wed, 11 Oct 2023 14:13:09 GMT",
"version": "v1"
}
] | 2023-10-12 | [
[
"Cembranos",
"Jose A. R.",
""
],
[
"Garay",
"Luis J.",
""
],
[
"Parra-López",
"Álvaro",
""
],
[
"Velázquez",
"Jose M. Sánchez",
""
]
] | Gravitational particle production of spectator fields due to the expansion universe during the inflationary and reheating phases of the early universe is of particular interest in the context of dark matter, since it allows to constrain the properties of the dark candidate by comparing the density of particles produced... |
1110.0530 | Tjonnie Guang Feng Li | T. G. F. Li, W. Del Pozzo, S. Vitale, C. Van Den Broeck, M. Agathos,
J. Veitch, K. Grover, T. Sidery, R. Sturani, A. Vecchio | Towards a generic test of the strong field dynamics of general
relativity using compact binary coalescence | 26 pages, 23 figures, Accepted by PRD | Phys. Rev. D 85, 082003 (2012) | 10.1103/PhysRevD.85.082003 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Coalescences of binary neutron stars and/or black holes are amongst the most
likely gravitational-wave signals to be observed in ground based
interferometric detectors. Apart from the astrophysical importance of their
detection, they will also provide us with our very first empirical access to
the genuinely strong-fi... | [
{
"created": "Mon, 3 Oct 2011 22:06:11 GMT",
"version": "v1"
},
{
"created": "Sun, 4 Mar 2012 12:28:05 GMT",
"version": "v2"
}
] | 2012-05-07 | [
[
"Li",
"T. G. F.",
""
],
[
"Del Pozzo",
"W.",
""
],
[
"Vitale",
"S.",
""
],
[
"Broeck",
"C. Van Den",
""
],
[
"Agathos",
"M.",
""
],
[
"Veitch",
"J.",
""
],
[
"Grover",
"K.",
""
],
[
"Sidery",
"T... | Coalescences of binary neutron stars and/or black holes are amongst the most likely gravitational-wave signals to be observed in ground based interferometric detectors. Apart from the astrophysical importance of their detection, they will also provide us with our very first empirical access to the genuinely strong-fiel... |
2105.09971 | Sk Jahanur Hoque | Sumanta Chakraborty, Sk Jahanur Hoque, Roberto Oliveri | Gravitational multipole moments for asymptotically de Sitter spacetimes | 35 pages, 1 figure, minor changes, version accepted for publication
in PRD | Phys. Rev. D 104, 064019 (2021) | 10.1103/PhysRevD.104.064019 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a prescription to compute the gravitational multipole moments of
compact objects for asymptotically de Sitter spacetimes. Our prescription
builds upon a recent definition of the gravitational multipole moments in terms
of Noether charges associated to specific vector fields, within the residual
harmonic ga... | [
{
"created": "Thu, 20 May 2021 18:04:54 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Sep 2021 22:33:20 GMT",
"version": "v2"
}
] | 2021-09-14 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"Hoque",
"Sk Jahanur",
""
],
[
"Oliveri",
"Roberto",
""
]
] | We provide a prescription to compute the gravitational multipole moments of compact objects for asymptotically de Sitter spacetimes. Our prescription builds upon a recent definition of the gravitational multipole moments in terms of Noether charges associated to specific vector fields, within the residual harmonic gaug... |
2405.13784 | Krzysztof Andrzejewski | K. Andrzejewski | Revisiting the dynamics of a charged spinning body in curved spacetime | 16 pages, no figures; comments and references added | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We analyze the motion of the spinning body (in the pole-dipole approximation)
in the gravitational and electromagnetic fields described by the
Mathisson-Papapetrou-Dixon-Souriau equations. First, we define a novel spin
supplementary condition for the electromagnetic interactions which generalizes
the one proposed by ... | [
{
"created": "Wed, 22 May 2024 16:10:44 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Jun 2024 16:26:07 GMT",
"version": "v2"
}
] | 2024-06-06 | [
[
"Andrzejewski",
"K.",
""
]
] | We analyze the motion of the spinning body (in the pole-dipole approximation) in the gravitational and electromagnetic fields described by the Mathisson-Papapetrou-Dixon-Souriau equations. First, we define a novel spin supplementary condition for the electromagnetic interactions which generalizes the one proposed by Oh... |
2008.13177 | Metin Arik | Onder Dunya and Metin Arik | A New Approach to Flatness, Horizon and Late-time Accelerating Expansion
Problems on the basis of Mach Principle | 27 pages, 1 figure, matches the published version | Physics of the Dark Universe 41 (2023) 101252 | 10.1016/j.dark.2023.101252 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the idea that the components of a cosmological metric may be
determined by the total gravitational potential of the universe, the scalar
field $\phi=1/G$ in the Jordan-Brans-Dicke (JBD) theory is introduced as
evolving with the inverse square of the scale factor. Since the gravitational
potential is related ... | [
{
"created": "Sun, 30 Aug 2020 14:01:19 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Apr 2022 18:31:51 GMT",
"version": "v2"
},
{
"created": "Tue, 16 May 2023 20:36:45 GMT",
"version": "v3"
}
] | 2023-05-18 | [
[
"Dunya",
"Onder",
""
],
[
"Arik",
"Metin",
""
]
] | Based on the idea that the components of a cosmological metric may be determined by the total gravitational potential of the universe, the scalar field $\phi=1/G$ in the Jordan-Brans-Dicke (JBD) theory is introduced as evolving with the inverse square of the scale factor. Since the gravitational potential is related to... |
gr-qc/9405014 | Peter Breitenlohner | P. Breitenlohner and D. Maison | On the Limiting Solution of the Bartnik-McKinnon Family | 7 pages, MPI PhT/94-20 | Commun.Math.Phys.171:685-690,1995 | 10.1007/BF02104684 | null | gr-qc | null | We analyze the limiting solution of the Bartnik-McKinnon family and show that
its exterior is an extremal Reissner-Nordstr{\o}m black hole and not a new type
of non-abelian black hole as claimed in a recent article by Smoller and
Wasserman.
| [
{
"created": "Fri, 6 May 1994 15:58:16 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Breitenlohner",
"P.",
""
],
[
"Maison",
"D.",
""
]
] | We analyze the limiting solution of the Bartnik-McKinnon family and show that its exterior is an extremal Reissner-Nordstr{\o}m black hole and not a new type of non-abelian black hole as claimed in a recent article by Smoller and Wasserman. |
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