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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0204067 | Madhavan Varadarajan | Madhavan Varadarajan (RRI, India) | Gravitons from a loop representation of linearised gravity | 23 pages, no figures | Phys.Rev. D66 (2002) 024017 | 10.1103/PhysRevD.66.024017 | null | gr-qc | null | Loop quantum gravity is based on a classical formulation of 3+1 gravity in
terms of a real SU(2) connection. Linearization of this classical formulation
about a flat background yields a description of linearised gravity in terms of
a {\em real} $U(1)\times U(1)\times U(1)$ connection. A `loop' representation,
in whic... | [
{
"created": "Sun, 21 Apr 2002 11:56:52 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Varadarajan",
"Madhavan",
"",
"RRI, India"
]
] | Loop quantum gravity is based on a classical formulation of 3+1 gravity in terms of a real SU(2) connection. Linearization of this classical formulation about a flat background yields a description of linearised gravity in terms of a {\em real} $U(1)\times U(1)\times U(1)$ connection. A `loop' representation, in which ... |
2208.13558 | Sinya Aoki | Sinya Aoki | Do we know how to define energy in general relativity? | 8 pages. In "Looking Beyond the Frontiers of Science - Dedicated to
the 80th Birthday of KK Phua", https://doi.org/10.1142/13065, Eds.: L Brink,
N-P Chang, D H Feng, K Fujikawa, M-L Ge, L C Kwek , C H Oh and S R Wadia | null | null | YITP-22-88 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This essay is dedicated to Prof. K.K. Phua on the occasion of his 80th
birthday. While the contents of this essay are based on our recent
papers$^{1,2}$ published in the International Journal of Modern Physics A, I
have added many personal opinions, so that I am solely responsible for all
statements in this essay.
... | [
{
"created": "Fri, 26 Aug 2022 00:21:41 GMT",
"version": "v1"
}
] | 2022-08-30 | [
[
"Aoki",
"Sinya",
""
]
] | This essay is dedicated to Prof. K.K. Phua on the occasion of his 80th birthday. While the contents of this essay are based on our recent papers$^{1,2}$ published in the International Journal of Modern Physics A, I have added many personal opinions, so that I am solely responsible for all statements in this essay. 1. S... |
0806.3273 | Jeff Murugan | Alex Hamilton and Jeff Murugan | On the shoulders of Giants - Quantum gravity and braneworld stability | 4 pages, revtex4 format, 1 figure, v2 minor changes in references | null | null | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The semi-classical nature of braneworld cosmological models does not account
for any quantum gravitational effects. In this letter we use the gauge/gravity
correspondence to argue that quantum string corrections cannot be ignored in
any study of braneworld stability. As an example, we find, by analysing the
quantum g... | [
{
"created": "Thu, 19 Jun 2008 20:08:35 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jun 2008 22:20:18 GMT",
"version": "v2"
}
] | 2008-06-24 | [
[
"Hamilton",
"Alex",
""
],
[
"Murugan",
"Jeff",
""
]
] | The semi-classical nature of braneworld cosmological models does not account for any quantum gravitational effects. In this letter we use the gauge/gravity correspondence to argue that quantum string corrections cannot be ignored in any study of braneworld stability. As an example, we find, by analysing the quantum gra... |
1409.7440 | Maur\'icio Richartz | Maur\'icio Richartz and Davi Giugno | Quasinormal modes of charged fields around a Reissner-Nordstr\"om black
hole | v3: matches published version. v2: 9 pages, 10 figures. References
added. New appendix | Phys. Rev. D. 90, 124011 (2014) | 10.1103/PhysRevD.90.124011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quasinormal spectrum of a charged scalar field around a non-extremal
Reissner-Nordstr\"om black hole, specially in the limit of large
electromagnetic interaction, has been comprehensively studied only very
recently. In this work, we extend the analysis to Dirac fields using the
continued fraction method and compa... | [
{
"created": "Thu, 25 Sep 2014 23:55:24 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Oct 2014 19:24:59 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Dec 2014 16:49:50 GMT",
"version": "v3"
}
] | 2014-12-04 | [
[
"Richartz",
"Maurício",
""
],
[
"Giugno",
"Davi",
""
]
] | The quasinormal spectrum of a charged scalar field around a non-extremal Reissner-Nordstr\"om black hole, specially in the limit of large electromagnetic interaction, has been comprehensively studied only very recently. In this work, we extend the analysis to Dirac fields using the continued fraction method and compare... |
gr-qc/0605048 | G\'abor Helesfai | Gabor Helesfai | The Proca-field in Loop Quantum Gravity | 15 pages. v2: 19 pages, amended sections 2 and 6, references added
v3: 20 pages, amended section 6 and minor corrections | Class.Quant.Grav.24:2861-2878,2007 | 10.1088/0264-9381/24/11/006 | null | gr-qc | null | In this paper we investigate the Proca-field in the framework of Loop Quantum
Gravity. It turns out that the methods developed there can be applied to the
symplectically embedded Proca-field, giving a rigorous, consistent,
non-perturbative quantization of the theory. This can be achieved by
introducing a scalar field... | [
{
"created": "Tue, 9 May 2006 08:30:07 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Oct 2006 14:52:59 GMT",
"version": "v2"
},
{
"created": "Tue, 17 Oct 2006 13:53:21 GMT",
"version": "v3"
},
{
"created": "Mon, 21 May 2007 13:01:00 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Helesfai",
"Gabor",
""
]
] | In this paper we investigate the Proca-field in the framework of Loop Quantum Gravity. It turns out that the methods developed there can be applied to the symplectically embedded Proca-field, giving a rigorous, consistent, non-perturbative quantization of the theory. This can be achieved by introducing a scalar field, ... |
2101.08264 | Yijun Wang | Yijun Wang, Rico K.L. Lo, Alvin K.Y. Li, Yanbei Chen | Identifying Type II Strongly Lensed Gravitational-Wave Images in
Third-Generation Gravitational-Wave Detectors | 20 pages, 16 figures. Figures and some texts were modified without
changes to the conclusion. Published In PRD | Phys. Rev. D 103, 104055 (2021) | 10.1103/PhysRevD.103.104055 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Strong gravitational lensing is a gravitational wave (GW) propagation effect
that influences the inferred GW source parameters and the cosmological
environment. Identifying strongly-lensed GW images is challenging as waveform
amplitude magnification is degenerate with a shift in the source intrinsic mass
and redshift... | [
{
"created": "Wed, 20 Jan 2021 19:00:00 GMT",
"version": "v1"
},
{
"created": "Mon, 24 May 2021 16:10:12 GMT",
"version": "v2"
}
] | 2021-06-02 | [
[
"Wang",
"Yijun",
""
],
[
"Lo",
"Rico K. L.",
""
],
[
"Li",
"Alvin K. Y.",
""
],
[
"Chen",
"Yanbei",
""
]
] | Strong gravitational lensing is a gravitational wave (GW) propagation effect that influences the inferred GW source parameters and the cosmological environment. Identifying strongly-lensed GW images is challenging as waveform amplitude magnification is degenerate with a shift in the source intrinsic mass and redshift. ... |
gr-qc/0204052 | R. Cartas-Fuentevilla | R. Cartas-Fuentevilla (EFI, and Universidad Autonoma de Puebla,
Mexico) | Adjoint operators and perturbation theory of black holes | LaTeX, 12 pages | J. Math. Phys., 41 (2000) 7521 | 10.1063/1.1310358 | null | gr-qc | null | We present a new approach for finding conservation laws in the perturbation
theory of black holes which applies for the more general cases of non-Hermitian
equations governing the perturbations. The approach is based on a general
result which establishes that a covariantly conserved current can be obtained
from a sol... | [
{
"created": "Tue, 16 Apr 2002 16:44:42 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Cartas-Fuentevilla",
"R.",
"",
"EFI, and Universidad Autonoma de Puebla,\n Mexico"
]
] | We present a new approach for finding conservation laws in the perturbation theory of black holes which applies for the more general cases of non-Hermitian equations governing the perturbations. The approach is based on a general result which establishes that a covariantly conserved current can be obtained from a solut... |
gr-qc/9803020 | Kengo Maeda | Kengo Maeda, Akihiro Ishibashi, and Makoto Narita | Chronology Protection and Non-Naked Singularity | 17 pages including 3 eps figures. Accepted for publication in
Classical and Quantum Gravity | Class.Quant.Grav.15:1637-1651,1998 | 10.1088/0264-9381/15/6/018 | TIT/HEP-377/COSMO-87 | gr-qc | null | We test the chronology protection conjecture in classical general relativity
by investigating finitely vicious space-times. First we present singularity
theorems in finitely vicious space-times by imposing some restrictions on the
chronology violating sets. In the theorems we can refer to the location of an
occurring... | [
{
"created": "Thu, 5 Mar 1998 08:18:03 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Maeda",
"Kengo",
""
],
[
"Ishibashi",
"Akihiro",
""
],
[
"Narita",
"Makoto",
""
]
] | We test the chronology protection conjecture in classical general relativity by investigating finitely vicious space-times. First we present singularity theorems in finitely vicious space-times by imposing some restrictions on the chronology violating sets. In the theorems we can refer to the location of an occurring s... |
2312.00865 | Marco Astorino | Marco Astorino | Equivalence principle and generalised accelerating black holes from
binary systems | v5: 16 pages, 5 figures; few typos corrected with respect to the
published version | Phys.Rev.D 109 (2024) 8, 084038 | 10.1103/PhysRevD.109.084038 | LIFT--5-3.23 | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-nd/4.0/ | The Einstein equivalence principle in general relativity allows us to
interpret accelerating black holes as a black hole immersed into the
gravitational field of a larger companion black hole. Indeed it is demonstrated
that C-metrics can be obtained as a limit of a binary system where one of the
black holes grows ind... | [
{
"created": "Fri, 1 Dec 2023 19:00:00 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Jan 2024 18:49:06 GMT",
"version": "v2"
},
{
"created": "Sat, 27 Jan 2024 16:36:25 GMT",
"version": "v3"
},
{
"created": "Wed, 7 Feb 2024 18:10:21 GMT",
"version": "v4"
},
{
"crea... | 2024-04-18 | [
[
"Astorino",
"Marco",
""
]
] | The Einstein equivalence principle in general relativity allows us to interpret accelerating black holes as a black hole immersed into the gravitational field of a larger companion black hole. Indeed it is demonstrated that C-metrics can be obtained as a limit of a binary system where one of the black holes grows indef... |
1207.1113 | Ivan Silva | I. P. Costa e Silva | On the geodesic incompleteness of spacetimes containing marginally outer
trapped surfaces | 11 pages, no figures, comments welcome. arXiv admin note: substantial
text overlap with arXiv:1206.0045 | null | 10.1088/0264-9381/29/23/235008 | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent paper, Eichmair, Galloway and Pollack have proved a
Gannon-Lee-type singularity theorem based on the existence of marginally outer
trapped surfaces (MOTS) on noncompact initial data sets for globally hyperbolic
spacetimes. This result requires that the MOTS be generic in a suitable sense.
In the same spir... | [
{
"created": "Wed, 4 Jul 2012 20:06:05 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Silva",
"I. P. Costa e",
""
]
] | In a recent paper, Eichmair, Galloway and Pollack have proved a Gannon-Lee-type singularity theorem based on the existence of marginally outer trapped surfaces (MOTS) on noncompact initial data sets for globally hyperbolic spacetimes. This result requires that the MOTS be generic in a suitable sense. In the same spirit... |
gr-qc/0608028 | Giles Martin | Atsushi Higuchi and Giles D. R. Martin | Quantum Radiation Reaction and the Green's Function Decomposition | 4 pages, Latex (Revtex). 1 Figure | Phys.Rev.D74:125002,2006 | 10.1103/PhysRevD.74.125002 | null | gr-qc hep-th quant-ph | null | We analyze the change in position (the position shift) of the wave packet of
a charged scalar particle due to radiation reaction in the $\hbar \to 0$ limit
of quantum electrodynamics. In particular, we re-express the formula previously
obtained for the position shift in terms of Green's functions for the
electromagne... | [
{
"created": "Fri, 4 Aug 2006 14:55:35 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Higuchi",
"Atsushi",
""
],
[
"Martin",
"Giles D. R.",
""
]
] | We analyze the change in position (the position shift) of the wave packet of a charged scalar particle due to radiation reaction in the $\hbar \to 0$ limit of quantum electrodynamics. In particular, we re-express the formula previously obtained for the position shift in terms of Green's functions for the electromagneti... |
2302.04467 | Aritra Ghosh | Aritra Ghosh and Chandrasekhar Bhamidipati | Contact and metric structures in black hole chemistry | Comments are welcome | null | null | null | gr-qc cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review recent studies of contact and thermodynamic geometry for black
holes in AdS spacetimes in the extended thermodynamics framework. The
cosmological constant gives rise to the notion of pressure $P = -\Lambda / 8
\pi$ and, subsequently a conjugate volume $V$, thereby leading to a close
analogy with hydrostatic... | [
{
"created": "Thu, 9 Feb 2023 07:16:38 GMT",
"version": "v1"
}
] | 2023-02-10 | [
[
"Ghosh",
"Aritra",
""
],
[
"Bhamidipati",
"Chandrasekhar",
""
]
] | We review recent studies of contact and thermodynamic geometry for black holes in AdS spacetimes in the extended thermodynamics framework. The cosmological constant gives rise to the notion of pressure $P = -\Lambda / 8 \pi$ and, subsequently a conjugate volume $V$, thereby leading to a close analogy with hydrostatic t... |
gr-qc/0110019 | John T. Whelan | John T. Whelan, Warren G. Anderson, Martha Casquette, Mario C. Diaz,
Ik Siong Heng, Martin McHugh, Joseph D. Romano, Charlie W. Torres Jr., Rosa
M. Trejo and Alberto Vecchio | Progress on stochastic background search codes for LIGO | 7 pages, 1 encapsulated PostScript figure, uses IOP class files,
submitted to the proceedings of the 4th Amaldi meeting (which will be
published in Classical and Quantum Gravity) | Class.Quant.Grav. 19 (2002) 1521-1528 | 10.1088/0264-9381/19/7/339 | null | gr-qc | null | One of the types of signals for which the LIGO interferometric gravitational
wave detectors will search is a stochastic background of gravitational
radiation. We review the technique of searching for a background using the
optimally-filtered cross-correlation statistic, and describe the state of plans
to perform such... | [
{
"created": "Tue, 2 Oct 2001 14:40:06 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Whelan",
"John T.",
""
],
[
"Anderson",
"Warren G.",
""
],
[
"Casquette",
"Martha",
""
],
[
"Diaz",
"Mario C.",
""
],
[
"Heng",
"Ik Siong",
""
],
[
"McHugh",
"Martin",
""
],
[
"Romano",
"Joseph D.",
""
]... | One of the types of signals for which the LIGO interferometric gravitational wave detectors will search is a stochastic background of gravitational radiation. We review the technique of searching for a background using the optimally-filtered cross-correlation statistic, and describe the state of plans to perform such c... |
1705.06585 | Asier Zubiaga | A. Zubiaga | Flat spin connections in the Teleparallel equivalent of General
Relativity | 10 pages, no figures. Minor modifications | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work generalizes the treatment of flat spin connections in the
teleparallel equivalent of general relativity. It is shown that a general flat
spin connection form a subspace in the affine space of spin connections which
is dynamically decoupled from the tetrad and the matter fields. A translation
in the affine s... | [
{
"created": "Thu, 18 May 2017 13:24:13 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Oct 2017 12:06:07 GMT",
"version": "v2"
},
{
"created": "Sun, 5 Nov 2017 23:38:23 GMT",
"version": "v3"
}
] | 2017-11-07 | [
[
"Zubiaga",
"A.",
""
]
] | This work generalizes the treatment of flat spin connections in the teleparallel equivalent of general relativity. It is shown that a general flat spin connection form a subspace in the affine space of spin connections which is dynamically decoupled from the tetrad and the matter fields. A translation in the affine sub... |
2110.13516 | Tuan Do | Tuan Q. Do, W. F. Kao | Anisotropic hyperbolic inflation for a model of two scalar and two
vector fields | 15 pages, 2 figures. Matches the published version. All calculations
are not modified. Comments are welcome | Eur. Phys. J. C 82, 123 (2022) | 10.1140/epjc/s10052-022-10078-6 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we extend a recent proposed model of two scalar and two vector
fields to a hyperbolic inflation scenario, in which the field space of two
scalar fields is a hyperbolic space instead of a flat space. In this model, one
of the scalar fields is assumed to be a radial field, while the other is set as
an an... | [
{
"created": "Tue, 26 Oct 2021 09:16:03 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Nov 2021 11:05:54 GMT",
"version": "v2"
},
{
"created": "Wed, 9 Feb 2022 09:30:35 GMT",
"version": "v3"
}
] | 2022-02-10 | [
[
"Do",
"Tuan Q.",
""
],
[
"Kao",
"W. F.",
""
]
] | In this paper, we extend a recent proposed model of two scalar and two vector fields to a hyperbolic inflation scenario, in which the field space of two scalar fields is a hyperbolic space instead of a flat space. In this model, one of the scalar fields is assumed to be a radial field, while the other is set as an angu... |
2105.05730 | Naveena Kumara A | Md Sabir Ali, A. Naveena Kumara, Kartheek Hegde, C. L. Ahmed Rizwan
and K. M. Ajith | Greybody factor for an electrically charged regular-de Sitter black
holes in $d$-dimensions | 26 pages, 5 figures. Comments are welcome | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we study the propagation of scalar fields in the
gravitational background of a spherically symmetric, electrically charged,
regular-de Sitter black holes in higher dimensions. We carry out a thorough
investigation of the grey body factors, by deriving analytical expressions for
both minimally and non... | [
{
"created": "Wed, 12 May 2021 15:25:08 GMT",
"version": "v1"
}
] | 2021-05-13 | [
[
"Ali",
"Md Sabir",
""
],
[
"Kumara",
"A. Naveena",
""
],
[
"Hegde",
"Kartheek",
""
],
[
"Rizwan",
"C. L. Ahmed",
""
],
[
"Ajith",
"K. M.",
""
]
] | In this article, we study the propagation of scalar fields in the gravitational background of a spherically symmetric, electrically charged, regular-de Sitter black holes in higher dimensions. We carry out a thorough investigation of the grey body factors, by deriving analytical expressions for both minimally and non-m... |
gr-qc/9801002 | Perjes Zoltan | L\'aszl\'o \'A. Gergely, Zolt\'an Perj\'es and M\'aty\'as Vas\'uth | Radiation Backreaction in Spinning Binaries | 3 pages, to appear in the Proceedings of the 8th Marcel Grossmann
Meeting | null | null | null | gr-qc | null | The evolution under radiation backreaction of a binary system consisting of a
black hole and a companion is studied in the limiting case when the spin of the
companion is negligible compared with the spin S of the black hole. To first
order in the spin, the motion of the reduced-mass particle excluding radiation
effe... | [
{
"created": "Fri, 2 Jan 1998 14:41:12 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gergely",
"László Á.",
""
],
[
"Perjés",
"Zoltán",
""
],
[
"Vasúth",
"Mátyás",
""
]
] | The evolution under radiation backreaction of a binary system consisting of a black hole and a companion is studied in the limiting case when the spin of the companion is negligible compared with the spin S of the black hole. To first order in the spin, the motion of the reduced-mass particle excluding radiation effect... |
1001.0152 | Gustavo Dotti | Gustavo Dotti and Reinaldo J. Gleiser | Gravitational instability of the inner static region of a
Reissner-Nordstrom black hole | 24 pages, 4 figures. Changes and corrections in proof using
intertwiners, also in figures | Class.Quant.Grav.27:185007,2010 | 10.1088/0264-9381/27/18/185007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Reissner--Nordstr\"om black holes have two static regions:
$r > \ro$ and $0 < r < \ri$, where $\ri$ and $\ro$ are the inner and outer
horizon radii. The stability of the exterior static region has been established
long time ago. In this work we prove that the interior static region is
unstable under linear gravitat... | [
{
"created": "Thu, 31 Dec 2009 16:38:40 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Jul 2010 04:22:34 GMT",
"version": "v2"
}
] | 2011-03-28 | [
[
"Dotti",
"Gustavo",
""
],
[
"Gleiser",
"Reinaldo J.",
""
]
] | Reissner--Nordstr\"om black holes have two static regions: $r > \ro$ and $0 < r < \ri$, where $\ri$ and $\ro$ are the inner and outer horizon radii. The stability of the exterior static region has been established long time ago. In this work we prove that the interior static region is unstable under linear gravitationa... |
1908.04378 | Hanif Golchin | Hanif Golchin and Mohammad Reza Mehdizadeh | Quasi-cosmological Traversable Wormholes in $f(R)$ Gravity | 13 pages | null | 10.1140/epjc/s10052-019-7292-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study traversable wormholes in the context of $f(R)$
gravity. Exact solutions of traversable wormholes are found by imposing the
nonconstant Ricci scalar. These solutions asymptotically match spherical, flat
and hyperbolic FRW metric. By choosing some static $f(R)$ gravity models, we
verify the stand... | [
{
"created": "Mon, 12 Aug 2019 20:58:58 GMT",
"version": "v1"
}
] | 2019-10-23 | [
[
"Golchin",
"Hanif",
""
],
[
"Mehdizadeh",
"Mohammad Reza",
""
]
] | In this paper we study traversable wormholes in the context of $f(R)$ gravity. Exact solutions of traversable wormholes are found by imposing the nonconstant Ricci scalar. These solutions asymptotically match spherical, flat and hyperbolic FRW metric. By choosing some static $f(R)$ gravity models, we verify the standar... |
0901.0835 | Farhad Darabi | F. Darabi | An expanding 4D universe in a 5D Kaluza-Klein cosmology with higher
dimensional matter | 10 pages, minor revision | Mod. Phys. Lett. A25:1635-1646,2010 | 10.1142/S0217732310032743 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the framework of Kaluza-Klein theory, we investigate a $(4+1)$-dimensional
universe consisting of a $(4+1)$ dimensional Robertson-Walker type metric
coupled with a $(4+1)$ dimensional energy-momentum tensor. The matter part
consists of an energy density together with a pressure subject to 4D part of
the $(4+1)$ di... | [
{
"created": "Wed, 7 Jan 2009 15:07:56 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Aug 2009 11:27:01 GMT",
"version": "v2"
},
{
"created": "Wed, 2 Dec 2009 12:04:42 GMT",
"version": "v3"
}
] | 2015-05-13 | [
[
"Darabi",
"F.",
""
]
] | In the framework of Kaluza-Klein theory, we investigate a $(4+1)$-dimensional universe consisting of a $(4+1)$ dimensional Robertson-Walker type metric coupled with a $(4+1)$ dimensional energy-momentum tensor. The matter part consists of an energy density together with a pressure subject to 4D part of the $(4+1)$ dime... |
gr-qc/0610091 | Charmousis | Christos Charmousis, David Langlois, Daniele Steer and Robin Zegers | Rotating spacetimes with a cosmological constant | Published version, added refs | JHEP 0702:064,2007 | 10.1088/1126-6708/2007/02/064 | LPT-Orsay/0663 | gr-qc hep-th | null | We develop solution-generating techniques for stationary metrics with one
angular momentum and axial symmetry, in the presence of a cosmological constant
and in arbitrary spacetime dimension. In parallel we study the related lower
dimensional Einstein-Maxwell-dilaton static spacetimes with a Liouville
potential. For ... | [
{
"created": "Wed, 18 Oct 2006 16:11:53 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Feb 2007 15:35:30 GMT",
"version": "v2"
}
] | 2010-10-27 | [
[
"Charmousis",
"Christos",
""
],
[
"Langlois",
"David",
""
],
[
"Steer",
"Daniele",
""
],
[
"Zegers",
"Robin",
""
]
] | We develop solution-generating techniques for stationary metrics with one angular momentum and axial symmetry, in the presence of a cosmological constant and in arbitrary spacetime dimension. In parallel we study the related lower dimensional Einstein-Maxwell-dilaton static spacetimes with a Liouville potential. For va... |
gr-qc/9411047 | Kjell Rosquist | Kjell Rosquist | Hamiltonian approach to relativistic star models | Standard LaTeX file, 17 pages | Class.Quant.Grav.12:1305-1326,1995 | 10.1088/0264-9381/12/5/019 | null | gr-qc | null | An ADM-like Hamiltonian approach is proposed for static spherically symmetric
relativistic star configurations. For a given equation of state the entire
information about the model can be encoded in a certain 2-dimensional
minisuperspace geometry. We derive exact solutions which arise from symmetries
corresponding to... | [
{
"created": "Fri, 18 Nov 1994 12:59:26 GMT",
"version": "v1"
},
{
"created": "Sat, 19 Nov 1994 20:45:55 GMT",
"version": "v2"
}
] | 2010-04-06 | [
[
"Rosquist",
"Kjell",
""
]
] | An ADM-like Hamiltonian approach is proposed for static spherically symmetric relativistic star configurations. For a given equation of state the entire information about the model can be encoded in a certain 2-dimensional minisuperspace geometry. We derive exact solutions which arise from symmetries corresponding to l... |
0709.4038 | Salvador Robles-Perez | P. F. Gonzalez-Diaz and S. Robles-Perez | Quantum theory of an accelerating universe | 10 pages, 1 figure | Int.J.Mod.Phys.D17:1213-1228,2008 | 10.1142/S0218271808012772 | null | gr-qc | null | We review some of the well-known features of quantum cosmology, such as the
factor ordering problem, the wave function and the density matrix, for a dark
energy dominated universe, where analytical solutions can be obtained. For the
particular case of the phantom universe, we suggest a quantum system in which
the usu... | [
{
"created": "Tue, 25 Sep 2007 20:55:15 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Dec 2007 12:19:02 GMT",
"version": "v2"
}
] | 2009-09-29 | [
[
"Gonzalez-Diaz",
"P. F.",
""
],
[
"Robles-Perez",
"S.",
""
]
] | We review some of the well-known features of quantum cosmology, such as the factor ordering problem, the wave function and the density matrix, for a dark energy dominated universe, where analytical solutions can be obtained. For the particular case of the phantom universe, we suggest a quantum system in which the usual... |
1102.4654 | Christine Chung | Christine Chung, Andrew Melatos, Badri Krishnan, John T. Whelan | Designing a cross-correlation search for continuous-wave gravitational
radiation from a neutron star in the supernova remnant SNR 1987A | 17 pages, 5 figures, accepted for publication in MNRAS | null | 10.1111/j.1365-2966.2011.18585.x | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A strategy is devised for a semi-coherent cross-correlation search for a
young neutron star in the supernova remnant SNR 1987A, using science data from
the Initial LIGO and/or Virgo detectors. An astrophysical model for the
gravitational wave phase is introduced which describes the star's spin down in
terms of its ma... | [
{
"created": "Wed, 23 Feb 2011 02:41:37 GMT",
"version": "v1"
}
] | 2015-05-27 | [
[
"Chung",
"Christine",
""
],
[
"Melatos",
"Andrew",
""
],
[
"Krishnan",
"Badri",
""
],
[
"Whelan",
"John T.",
""
]
] | A strategy is devised for a semi-coherent cross-correlation search for a young neutron star in the supernova remnant SNR 1987A, using science data from the Initial LIGO and/or Virgo detectors. An astrophysical model for the gravitational wave phase is introduced which describes the star's spin down in terms of its magn... |
1912.08833 | Carlos A. R. Herdeiro | Pedro V. P. Cunha, Nelson A. Eir\'o, Carlos A. R. Herdeiro, Jos\'e P.
S. Lemos | Lensing and shadow of a black hole surrounded by a heavy accretion disk | 24 pages, 15 figures | JCAP 03 (2020) 035 | 10.1088/1475-7516/2020/03/035 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a static, axially symmetric spacetime describing the
superposition of a Schwarzschild black hole (BH) with a thin and heavy
accretion disk. The BH-disk configuration is a solution of the Einstein field
equations within the Weyl class. The disk is sourced by a distributional
energy-momentum tensor and it i... | [
{
"created": "Wed, 18 Dec 2019 19:02:13 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Dec 2019 09:26:25 GMT",
"version": "v2"
}
] | 2023-03-17 | [
[
"Cunha",
"Pedro V. P.",
""
],
[
"Eiró",
"Nelson A.",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Lemos",
"José P. S.",
""
]
] | We consider a static, axially symmetric spacetime describing the superposition of a Schwarzschild black hole (BH) with a thin and heavy accretion disk. The BH-disk configuration is a solution of the Einstein field equations within the Weyl class. The disk is sourced by a distributional energy-momentum tensor and it is ... |
gr-qc/9604054 | Christian Rueede | Christian Rueede (1), Norbert Straumann (1) ( (1) University of
Zurich, Switzerland) | On Newton-Cartan Cosmology | 15 pages, latex file using amstex package, to be published in Helv.
Phys. Acta | Helv.Phys.Acta 70 (1997) 318-335 | null | ZU-TH-12/96 | gr-qc | null | After a brief summary of the Newton-Cartan theory in a form which emphasizes
its close analogy to general relativity, we illustrate the theory with
selective applications in cosmology. The geometrical formulation of this
nonrelativistic theory of gravity, pioneered by Cartan and further developed by
various workers, ... | [
{
"created": "Mon, 29 Apr 1996 10:37:47 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rueede",
"Christian",
""
],
[
"Straumann",
"Norbert",
""
]
] | After a brief summary of the Newton-Cartan theory in a form which emphasizes its close analogy to general relativity, we illustrate the theory with selective applications in cosmology. The geometrical formulation of this nonrelativistic theory of gravity, pioneered by Cartan and further developed by various workers, le... |
1711.07490 | Ivica Smoli\'c | Ivica Smoli\'c | Spacetimes dressed with stealth electromagnetic fields | 6 pages; reformatted and slightly revised published version, with an
additional comment at the end of the Section II.B | Phys. Rev. D 97, 084041 (2018) | 10.1103/PhysRevD.97.084041 | ZTF-EP-17-11 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Stealth field configurations by definition have a vanishing energy-momentum
tensor, thus do not contribute to the gravitational field equations. While only
trivial fields can be stealth in Maxwell's electrodynamics, nontrivial stealth
fields appear in some nonlinear models of electromagnetism. We find the
necessary a... | [
{
"created": "Mon, 20 Nov 2017 19:00:06 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Nov 2017 18:39:47 GMT",
"version": "v2"
},
{
"created": "Thu, 26 Apr 2018 16:51:18 GMT",
"version": "v3"
}
] | 2018-04-27 | [
[
"Smolić",
"Ivica",
""
]
] | Stealth field configurations by definition have a vanishing energy-momentum tensor, thus do not contribute to the gravitational field equations. While only trivial fields can be stealth in Maxwell's electrodynamics, nontrivial stealth fields appear in some nonlinear models of electromagnetism. We find the necessary and... |
gr-qc/0112059 | K. Rajesh Nayak | S. V. Dhurandhar, K. Rajesh Nayak and J-Y. Vinet | Algebraic approach to time-delay data analysis for LISA | 27 Pages, 6 figures | Phys.Rev. D70 (2004) 102003 | 10.1103/PhysRevD.65.102002 | null | gr-qc | null | Cancellation of laser frequency noise in interferometers is crucial for
attaining the requisite sensitivity of the triangular 3-spacecraft LISA
configuration. Raw laser noise is several orders of magnitude above the other
noises and thus it is essential to bring it down to the level of other noises
such as shot, acce... | [
{
"created": "Sat, 22 Dec 2001 11:22:46 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Jun 2002 19:51:12 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Dhurandhar",
"S. V.",
""
],
[
"Nayak",
"K. Rajesh",
""
],
[
"Vinet",
"J-Y.",
""
]
] | Cancellation of laser frequency noise in interferometers is crucial for attaining the requisite sensitivity of the triangular 3-spacecraft LISA configuration. Raw laser noise is several orders of magnitude above the other noises and thus it is essential to bring it down to the level of other noises such as shot, accele... |
gr-qc/0310082 | Thoralf Chrobok | H.-H. v. Borzeszkowski, T. Chrobok | Are there Thermodynamical Degrees of Freedom of Gravitation? | 7 pages, revtex document | Found.Phys. 33 (2003) 529 | null | null | gr-qc | null | In discussing fundamentals of general-relativistic irreversible continuum
thermodynamics, this theory is shown to be characterized by the feature that no
thermodynamical degrees of freedom are ascribed to gravitation. However,
accepting that black hole thermodynamics seems to oppose this harmlessness of
gravitation o... | [
{
"created": "Thu, 16 Oct 2003 10:12:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Borzeszkowski",
"H. -H. v.",
""
],
[
"Chrobok",
"T.",
""
]
] | In discussing fundamentals of general-relativistic irreversible continuum thermodynamics, this theory is shown to be characterized by the feature that no thermodynamical degrees of freedom are ascribed to gravitation. However, accepting that black hole thermodynamics seems to oppose this harmlessness of gravitation one... |
2211.14412 | Leonardo Balart | Sebasti\'an Belmar-Herrera, Leonardo Balart | Charged black holes from a family of Born-Infeld-type electrodynamics
models | 21 pages, 7 figures | Mod.Phys.Lett.A 37 (2022) 29, 2250194 | 10.1142/S0217732322501942 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We present a family of nonlinear electrodynamics models that are free of the
infinite self-energy of the point charge. Each model is dependent on a
dimensional nonlinearity parameter and is determined by the integer value of a
dimensionless parameter n. The Born-Infeld model is recovered when n = 1. Some
of the chara... | [
{
"created": "Sat, 26 Nov 2022 00:26:59 GMT",
"version": "v1"
}
] | 2023-01-10 | [
[
"Belmar-Herrera",
"Sebastián",
""
],
[
"Balart",
"Leonardo",
""
]
] | We present a family of nonlinear electrodynamics models that are free of the infinite self-energy of the point charge. Each model is dependent on a dimensional nonlinearity parameter and is determined by the integer value of a dimensionless parameter n. The Born-Infeld model is recovered when n = 1. Some of the charact... |
1010.1732 | Robert Carroll | Robert Carroll | On some toy quantum cosmology | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Some connections of the quantum potential to gravitation are discussed.
| [
{
"created": "Fri, 8 Oct 2010 16:36:01 GMT",
"version": "v1"
}
] | 2010-10-11 | [
[
"Carroll",
"Robert",
""
]
] | Some connections of the quantum potential to gravitation are discussed. |
1812.03873 | Pardyumn Kumar Sahoo | P.H.R.S. Moraes, P.K. Sahoo, Barkha Taori, Parbati Sahoo | Phantom energy dominated universe as a transient stage in $f(R)$
cosmology | Revision submitted to IJMPD | International Journal of Modern Physics D (2019) | 10.1142/S0218271819501244 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The $f(R)$ theories of gravity are the most popular, simple and well
succeeded extension of Einstein's General Relativity. They can account for some
observational issues of standard cosmology with no need for evoking the dark
sector of the universe. In the present letter we will investigate LRS Bianchi
type-I space-t... | [
{
"created": "Fri, 7 Dec 2018 17:03:25 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Apr 2019 12:50:13 GMT",
"version": "v2"
}
] | 2019-04-16 | [
[
"Moraes",
"P. H. R. S.",
""
],
[
"Sahoo",
"P. K.",
""
],
[
"Taori",
"Barkha",
""
],
[
"Sahoo",
"Parbati",
""
]
] | The $f(R)$ theories of gravity are the most popular, simple and well succeeded extension of Einstein's General Relativity. They can account for some observational issues of standard cosmology with no need for evoking the dark sector of the universe. In the present letter we will investigate LRS Bianchi type-I space-tim... |
1008.2961 | Mark Hannam | Mark Hannam, Sascha Husa, Frank Ohme, P. Ajith | Length requirements for numerical-relativity waveforms | Corrected some typos | Phys.Rev.D82:124052,2010 | 10.1103/PhysRevD.82.124052 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One way to produce complete inspiral-merger-ringdown gravitational waveforms
from black-hole-binary systems is to connect post-Newtonian (PN) and
numerical-relativity (NR) results to create "hybrid" waveforms. Hybrid
waveforms are central to the construction of some phenomenological models for
GW search templates, an... | [
{
"created": "Tue, 17 Aug 2010 20:02:49 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Sep 2010 10:32:21 GMT",
"version": "v2"
}
] | 2011-01-17 | [
[
"Hannam",
"Mark",
""
],
[
"Husa",
"Sascha",
""
],
[
"Ohme",
"Frank",
""
],
[
"Ajith",
"P.",
""
]
] | One way to produce complete inspiral-merger-ringdown gravitational waveforms from black-hole-binary systems is to connect post-Newtonian (PN) and numerical-relativity (NR) results to create "hybrid" waveforms. Hybrid waveforms are central to the construction of some phenomenological models for GW search templates, and ... |
1209.5703 | Paul Wesson | Paul S. Wesson and James M. Overduin | A Scalar Field and the Einstein Vacuum in Modern Kaluza-Klein Theory | Changes from v.1: New last paragraph, Appendix | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Five-dimensional relativity as an extension of general relativity has field
equations that simplify considerably given the adoption of a new gauge. The
result is a scalar field governed by the Klein-Gordon equation, in an empty
spacetime with a cosmological constant governed by Einstein's equations. The
main applicat... | [
{
"created": "Sun, 23 Sep 2012 22:41:41 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Jan 2013 13:39:10 GMT",
"version": "v2"
}
] | 2013-01-28 | [
[
"Wesson",
"Paul S.",
""
],
[
"Overduin",
"James M.",
""
]
] | Five-dimensional relativity as an extension of general relativity has field equations that simplify considerably given the adoption of a new gauge. The result is a scalar field governed by the Klein-Gordon equation, in an empty spacetime with a cosmological constant governed by Einstein's equations. The main applicatio... |
2008.06436 | Bruce Edelman | Bruce Edelman, Francisco J. Rivera-Paleo, J.D. Merritt, Ben Farr,
Zoheyr Doctor, Jeandrew Brink, Will M. Farr, Jonathan Gair, Joey Shapiro Key,
Jess McIver, Alex B. Nielsen | Constraining Unmodeled Physics with Compact Binary Mergers from GWTC-1 | 12 pages, 13 figures | Phys. Rev. D 103, 042004 (2021) | 10.1103/PhysRevD.103.042004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a flexible model to describe the effects of generic deviations of
observed gravitational wave signals from modeled waveforms in the LIGO and
Virgo gravitational wave detectors. With the detection of 11 gravitational wave
events from the GWTC-1 catalog, we are able to constrain possible deviations
from our ... | [
{
"created": "Fri, 14 Aug 2020 16:02:20 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Jan 2022 16:35:03 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Feb 2022 21:46:48 GMT",
"version": "v3"
}
] | 2022-02-15 | [
[
"Edelman",
"Bruce",
""
],
[
"Rivera-Paleo",
"Francisco J.",
""
],
[
"Merritt",
"J. D.",
""
],
[
"Farr",
"Ben",
""
],
[
"Doctor",
"Zoheyr",
""
],
[
"Brink",
"Jeandrew",
""
],
[
"Farr",
"Will M.",
""
],
[... | We present a flexible model to describe the effects of generic deviations of observed gravitational wave signals from modeled waveforms in the LIGO and Virgo gravitational wave detectors. With the detection of 11 gravitational wave events from the GWTC-1 catalog, we are able to constrain possible deviations from our mo... |
1008.2985 | Andrey Shoom A | Valeri P. Frolov and Andrey A. Shoom | Motion of charged particles near weakly magnetized Schwarzschild black
hole | 11 pages, 12 figures | Phys.Rev.D82:084034,2010 | 10.1103/PhysRevD.82.084034 | Alberta-Thy-10-10 | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study motion of a charged particle in the vicinity of a weakly magnetized
Schwarzschild black hole and focus on its bounded trajectories lying in the
black hole equatorial plane. If the Lorentz force, acting on the particle, is
directed outward from the black hole, there exist two qualitatively different
types of ... | [
{
"created": "Tue, 17 Aug 2010 23:39:18 GMT",
"version": "v1"
}
] | 2010-10-27 | [
[
"Frolov",
"Valeri P.",
""
],
[
"Shoom",
"Andrey A.",
""
]
] | We study motion of a charged particle in the vicinity of a weakly magnetized Schwarzschild black hole and focus on its bounded trajectories lying in the black hole equatorial plane. If the Lorentz force, acting on the particle, is directed outward from the black hole, there exist two qualitatively different types of tr... |
2110.00140 | Adam D. Helfer | Adam D. Helfer | Angular momentum, spinors and twistors | 27 pages, to appear in PRD | null | 10.1103/PhysRevD.104.104053 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Twistors appear to provide a satisfactory treatment of angular momentum for
gravitationally radiating systems. The approach is manifestly
Bondi-Metzner-Sachs (BMS) invariant, and there are no supertranslation
ambiguities. The resulting definitions of center of mass and spin are
appealing: unphysical contributions fro... | [
{
"created": "Fri, 1 Oct 2021 00:37:08 GMT",
"version": "v1"
}
] | 2021-12-01 | [
[
"Helfer",
"Adam D.",
""
]
] | Twistors appear to provide a satisfactory treatment of angular momentum for gravitationally radiating systems. The approach is manifestly Bondi-Metzner-Sachs (BMS) invariant, and there are no supertranslation ambiguities. The resulting definitions of center of mass and spin are appealing: unphysical contributions from ... |
gr-qc/9809056 | V. V. Kassandrov | V.V.Kassandrov, J.A.Rizcalla (RPFU, Moscow, Russia) | Particles as singularities within the unified algebraic field dynamics | 12 pages, LaTeX 2e, Proc. Int. Conf. "Geometrization of Physics III",
Kazan, Russia, 1997 | null | null | Proc. Int. Conf. "Geometrization of Physics III", Kazan, Russia,
1997 | gr-qc hep-th math-ph math.MP | null | We consider a nonlinear generalization of Cauchy-Riemann eqs. to the algebra
of biquaternions. From here we come to "universal generating equations" (1)
which deal with 2-spinor and gauge fields and form the basis of some unified
algebraic field theory. For each solution of eqs.(1) the components of spinor
field sati... | [
{
"created": "Thu, 17 Sep 1998 17:56:55 GMT",
"version": "v1"
}
] | 2019-07-25 | [
[
"Kassandrov",
"V. V.",
"",
"RPFU, Moscow, Russia"
],
[
"Rizcalla",
"J. A.",
"",
"RPFU, Moscow, Russia"
]
] | We consider a nonlinear generalization of Cauchy-Riemann eqs. to the algebra of biquaternions. From here we come to "universal generating equations" (1) which deal with 2-spinor and gauge fields and form the basis of some unified algebraic field theory. For each solution of eqs.(1) the components of spinor field satisf... |
gr-qc/0204009 | Pierre Teyssandier | Bernard Linet, Pierre Teyssandier | Time transfer and frequency shift to the order 1/c^4 in the field of an
axisymmetric rotating body | 17 pages, no figure. Version 2. Abstract and Section II revised. To
appear in Physical Review D | Phys.Rev. D66 (2002) 024045 | 10.1103/PhysRevD.66.024045 | null | gr-qc astro-ph | null | Within the weak-field, post-Newtonian approximation of the metric theories of
gravity, we determine the one-way time transfer up to the order 1/c^4, the
unperturbed term being of order 1/c, and the frequency shift up to the order
1/c^4. We adapt the method of the world-function developed by Synge to the
Nordtvedt-Wil... | [
{
"created": "Tue, 2 Apr 2002 15:37:48 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Jun 2002 16:26:03 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Linet",
"Bernard",
""
],
[
"Teyssandier",
"Pierre",
""
]
] | Within the weak-field, post-Newtonian approximation of the metric theories of gravity, we determine the one-way time transfer up to the order 1/c^4, the unperturbed term being of order 1/c, and the frequency shift up to the order 1/c^4. We adapt the method of the world-function developed by Synge to the Nordtvedt-Will ... |
1904.11329 | Milan Milosevic | Marko Stojanovi\'c, Neven Bili\'c, Dragoljub D. Dimitrijevi\'c, Goran
S. Djordjevic and Milan Milo\v{s}evi\'c | Inflationary RSII Model with a Matter in the Bulk and Exponential
Potential of Tachyon Field | 9 pages, 1 figure, will be published in the Special Issue of Facta
Universitatis, Series: Physics, Chemistry and Technology devoted to the
SEENET-MTP Balkan Workshop BSW2018 (3-14 June 2018) | Facta Universitatis Series: Physics, Chemistry and Technology Vol.
17, No 1, Special Issue, 2019, pp. 79 - 87 | 10.2298/FUPCT1901079S | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study a tachyon cosmological model based on dynamics of a
3-brane in the second Randall-Sundrum (RSII) model extended to include matter
in the bulk. The presence of matter in the bulk changes warp factor which leads
to modification of inflationary dynamics. The additional brane behaves
effectively as... | [
{
"created": "Thu, 25 Apr 2019 13:42:58 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Oct 2019 09:13:13 GMT",
"version": "v2"
}
] | 2019-10-18 | [
[
"Stojanović",
"Marko",
""
],
[
"Bilić",
"Neven",
""
],
[
"Dimitrijević",
"Dragoljub D.",
""
],
[
"Djordjevic",
"Goran S.",
""
],
[
"Milošević",
"Milan",
""
]
] | In this paper we study a tachyon cosmological model based on dynamics of a 3-brane in the second Randall-Sundrum (RSII) model extended to include matter in the bulk. The presence of matter in the bulk changes warp factor which leads to modification of inflationary dynamics. The additional brane behaves effectively as a... |
gr-qc/0104070 | Josep Llosa | B. Coll (Observatoire de Paris), J. Llosa and D. Soler (Universitat
Barcelona) | Three-dimensional metrics as deformations of a constant curvature metric | 14 pages, LaTeX | Gen.Rel.Grav.34:269-282,2002 | 10.1023/A:1015391411214 | null | gr-qc | null | Any three-dimensional Riemannian metric can be locally obtained by deforming
a constant curvature metric along one direction. The general interest of this
result, both in geometry and physics, and related open problems are stressed.
| [
{
"created": "Mon, 23 Apr 2001 12:47:20 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Coll",
"B.",
"",
"Observatoire de Paris"
],
[
"Llosa",
"J.",
"",
"Universitat\n Barcelona"
],
[
"Soler",
"D.",
"",
"Universitat\n Barcelona"
]
] | Any three-dimensional Riemannian metric can be locally obtained by deforming a constant curvature metric along one direction. The general interest of this result, both in geometry and physics, and related open problems are stressed. |
1103.0710 | Gustav Holzegel | Gustav Holzegel | Well-posedness for the massive wave equation on asymptotically anti-de
Sitter spacetimes | 21 pages, to appear in JHDE | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this short paper, we prove a well-posedness theorem for the massive wave
equation (with the mass satisfying the Breitenlohner-Freedman bound) on
asymptotically anti-de Sitter spaces. The solution is constructed as a limit of
solutions to an initial boundary value problem with boundary at a finite
location in space... | [
{
"created": "Thu, 3 Mar 2011 15:10:55 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Oct 2011 11:32:03 GMT",
"version": "v2"
}
] | 2011-11-01 | [
[
"Holzegel",
"Gustav",
""
]
] | In this short paper, we prove a well-posedness theorem for the massive wave equation (with the mass satisfying the Breitenlohner-Freedman bound) on asymptotically anti-de Sitter spaces. The solution is constructed as a limit of solutions to an initial boundary value problem with boundary at a finite location in spaceti... |
1010.5451 | Etera R. Livine | Enrique F. Borja, Laurent Freidel, I\~naki Garay, Etera R. Livine | U(N) tools for Loop Quantum Gravity: The Return of the Spinor | 23 pages | Class.Quant.Grav.28:055005,2011 | 10.1088/0264-9381/28/5/055005 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the classical setting for the U(N) framework for SU(2)
intertwiners for loop quantum gravity (LQG) and describe the corresponding
phase space in terms of spinors with appropriate constraints. We show how its
quantization leads back to the standard Hilbert space of intertwiner states
defined as holomorphic ... | [
{
"created": "Tue, 26 Oct 2010 16:33:42 GMT",
"version": "v1"
}
] | 2011-03-07 | [
[
"Borja",
"Enrique F.",
""
],
[
"Freidel",
"Laurent",
""
],
[
"Garay",
"Iñaki",
""
],
[
"Livine",
"Etera R.",
""
]
] | We explore the classical setting for the U(N) framework for SU(2) intertwiners for loop quantum gravity (LQG) and describe the corresponding phase space in terms of spinors with appropriate constraints. We show how its quantization leads back to the standard Hilbert space of intertwiner states defined as holomorphic fu... |
gr-qc/0009020 | Toporenskij A. V. | S.Alexeyev, A.Toporensky, V.Ustiansky | The Nature of Singularity in Bianchi I Cosmological String Gravity Model
with Second Order Curvature Corrections | 5 pages with 6 PostScript figures; small comments and references
added; final version to appear in Phys. Lett. B | null | 10.1016/S0370-2693(01)00556-1 | null | gr-qc hep-th | null | We investigate Bianchi I cosmological model in the theory of a dilatonM field
coupled to gravity through a Gauss-Bonnet term. Two type ofM cosmological
singularity are distinguished. The former is analogous toM the Einstein gravity
singularity, the latter (which does not appear inM classical General
Relativity) occur... | [
{
"created": "Thu, 7 Sep 2000 11:44:07 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Sep 2000 09:05:38 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Dec 2000 11:23:26 GMT",
"version": "v3"
},
{
"created": "Tue, 10 Jul 2001 11:19:18 GMT",
"version": "v4"
}
] | 2009-10-31 | [
[
"Alexeyev",
"S.",
""
],
[
"Toporensky",
"A.",
""
],
[
"Ustiansky",
"V.",
""
]
] | We investigate Bianchi I cosmological model in the theory of a dilatonM field coupled to gravity through a Gauss-Bonnet term. Two type ofM cosmological singularity are distinguished. The former is analogous toM the Einstein gravity singularity, the latter (which does not appear inM classical General Relativity) occurs ... |
1511.00690 | Vitor Cardoso | Vitor Cardoso, Leonel Queimada | Cosmic Censorship and parametrized spinning black-hole geometries | 9 pages, accepted for publication as a Letter in Gen. Rel. Grav | null | 10.1007/s10714-015-1990-5 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The ``cosmic censorship conjecture'' asserts that all singularities arising
from gravitational collapse are hidden within black holes. We investigate this
conjecture in a setup of interest for tests of General Relativity: black hole
solutions which are parametrically small deviations away from the Kerr
solution. Thes... | [
{
"created": "Mon, 2 Nov 2015 21:00:03 GMT",
"version": "v1"
}
] | 2015-12-09 | [
[
"Cardoso",
"Vitor",
""
],
[
"Queimada",
"Leonel",
""
]
] | The ``cosmic censorship conjecture'' asserts that all singularities arising from gravitational collapse are hidden within black holes. We investigate this conjecture in a setup of interest for tests of General Relativity: black hole solutions which are parametrically small deviations away from the Kerr solution. These ... |
gr-qc/0603051 | Yun Soo Myung | Yun Soo Myung | Phase transition between the BTZ black hole and AdS space | 10 pages, 4 eps figures, version to appear in PLB | Phys.Lett. B638 (2006) 515-518 | 10.1016/j.physletb.2006.04.024 | INJE-TP-06-01 | gr-qc hep-th | null | In three dimensions, a phase transition occurs between the non-rotating BTZ
black hole and the massless BTZ black hole. Further, introducing the mass of a
conical singularity, we show that a transition between the non-rotating BTZ
black hole and thermal AdS space is also possible.
| [
{
"created": "Mon, 13 Mar 2006 19:03:37 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Apr 2006 15:31:39 GMT",
"version": "v2"
}
] | 2010-04-05 | [
[
"Myung",
"Yun Soo",
""
]
] | In three dimensions, a phase transition occurs between the non-rotating BTZ black hole and the massless BTZ black hole. Further, introducing the mass of a conical singularity, we show that a transition between the non-rotating BTZ black hole and thermal AdS space is also possible. |
2101.08276 | Shahar Hod | Shahar Hod | Marginally bound circular orbits in the composed black-hole-ring system | 11 pages | The European Physical Journal C 80, 948 (2020) | 10.1140/epjc/s10052-020-08531-5 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | The physical and mathematical properties of the non-linearly coupled
black-hole-orbiting-ring system are studied analytically to second order in the
dimensionless angular velocity $M_{\text{ir}}\omega_{\text{H}}$ of the
black-hole horizon (here $M_{\text{ir}}$ is the irreducible mass of the slowly
rotating central bl... | [
{
"created": "Wed, 20 Jan 2021 19:00:03 GMT",
"version": "v1"
}
] | 2021-01-27 | [
[
"Hod",
"Shahar",
""
]
] | The physical and mathematical properties of the non-linearly coupled black-hole-orbiting-ring system are studied analytically to second order in the dimensionless angular velocity $M_{\text{ir}}\omega_{\text{H}}$ of the black-hole horizon (here $M_{\text{ir}}$ is the irreducible mass of the slowly rotating central blac... |
1209.4987 | Oleg Zaslavskii | O. B. Zaslavskii | Ultra-high energy collisions of nonequatorial geodesic particles near
dirty black holes | 10 pages. Minor corrections. To appear in JHEP | JHEP, 2012: 32 (2012) | 10.1007/JHEP12(2012)032 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider collision of two geodesic particles moving around rotating
stationary axially symmetric black holes. It is shown for arbitrary
nonequatorial motion that under certain conditions the energy in their centre
of mass frame can grow unbound (the so-called BSW effect). This generalizes the
previous results for ... | [
{
"created": "Sat, 22 Sep 2012 11:37:50 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Nov 2012 18:09:33 GMT",
"version": "v2"
},
{
"created": "Mon, 3 Dec 2012 14:48:24 GMT",
"version": "v3"
}
] | 2015-06-11 | [
[
"Zaslavskii",
"O. B.",
""
]
] | We consider collision of two geodesic particles moving around rotating stationary axially symmetric black holes. It is shown for arbitrary nonequatorial motion that under certain conditions the energy in their centre of mass frame can grow unbound (the so-called BSW effect). This generalizes the previous results for eq... |
gr-qc/9902072 | Shahar Hod | Shahar Hod | Mode-Coupling in Rotating Gravitational Collapse of a Scalar Field | 20 pages | Phys.Rev.D61:024033,2000 | 10.1103/PhysRevD.61.024033 | null | gr-qc | null | We present an analytic study of the mode-coupling phenomena for a scalar
field propagating on a rotating Kerr background. Physically, this phenomena is
caused by the dragging of reference frames, due to the black-hole (or star's)
rotation. We find that different modes become mixed during the evolution and
the asympto... | [
{
"created": "Tue, 23 Feb 1999 14:05:12 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Jun 1999 05:41:34 GMT",
"version": "v2"
},
{
"created": "Mon, 14 Jun 1999 10:41:57 GMT",
"version": "v3"
},
{
"created": "Wed, 29 Dec 1999 07:48:05 GMT",
"version": "v4"
}
] | 2010-11-19 | [
[
"Hod",
"Shahar",
""
]
] | We present an analytic study of the mode-coupling phenomena for a scalar field propagating on a rotating Kerr background. Physically, this phenomena is caused by the dragging of reference frames, due to the black-hole (or star's) rotation. We find that different modes become mixed during the evolution and the asymptoti... |
2301.08318 | Wenbin Lin | Ya Guo, Hiroaki Nakajima, Wenbin Lin | Gravitational-wave equation in effective one-body background for
spinless binary | null | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct the gravitational-wave equation in the background of the
effective one-body system for the spinless binary, which is in general
available with the spherically symmetric background as well. The gauge
conditions are given in terms of the metric perturbation.
| [
{
"created": "Wed, 18 Jan 2023 02:53:07 GMT",
"version": "v1"
}
] | 2023-01-23 | [
[
"Guo",
"Ya",
""
],
[
"Nakajima",
"Hiroaki",
""
],
[
"Lin",
"Wenbin",
""
]
] | We construct the gravitational-wave equation in the background of the effective one-body system for the spinless binary, which is in general available with the spherically symmetric background as well. The gauge conditions are given in terms of the metric perturbation. |
2212.02942 | Vitor Bessa | Artur Alho, Vitor Bessa, Filipe C. Mena | Dynamics of interacting monomial scalar field potentials and perfect
fluids | 63 pages, 54 figures | null | null | null | gr-qc astro-ph.CO math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by cosmological models of the early universe we analyse the
dynamics of the Einstein equations with a minimally coupled scalar field with
monomial potentials $V(\phi)=\frac{(\lambda\phi)^{2n}}{2n}$, $\lambda>0$,
$n\in\mathbb{N}$, interacting with a perfect fluid with linear equation of
state $p_\mathrm{pf}=... | [
{
"created": "Tue, 6 Dec 2022 12:54:41 GMT",
"version": "v1"
}
] | 2022-12-07 | [
[
"Alho",
"Artur",
""
],
[
"Bessa",
"Vitor",
""
],
[
"Mena",
"Filipe C.",
""
]
] | Motivated by cosmological models of the early universe we analyse the dynamics of the Einstein equations with a minimally coupled scalar field with monomial potentials $V(\phi)=\frac{(\lambda\phi)^{2n}}{2n}$, $\lambda>0$, $n\in\mathbb{N}$, interacting with a perfect fluid with linear equation of state $p_\mathrm{pf}=(\... |
1112.3094 | William East | William E. East, Frans Pretorius and Branson C. Stephens | Hydrodynamics in full general relativity with conservative AMR | 22 pages, 14 figures; revised according referee comments, PRD in
press | Phys. Rev. D 85, 124010 (2012) | 10.1103/PhysRevD.85.124010 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There is great interest in numerical relativity simulations involving matter
due to the likelihood that binary compact objects involving neutron stars will
be detected by gravitational wave observatories in the coming years, as well as
to the possibility that binary compact object mergers could explain
short-duration... | [
{
"created": "Wed, 14 Dec 2011 01:58:45 GMT",
"version": "v1"
},
{
"created": "Tue, 29 May 2012 21:41:24 GMT",
"version": "v2"
}
] | 2012-06-06 | [
[
"East",
"William E.",
""
],
[
"Pretorius",
"Frans",
""
],
[
"Stephens",
"Branson C.",
""
]
] | There is great interest in numerical relativity simulations involving matter due to the likelihood that binary compact objects involving neutron stars will be detected by gravitational wave observatories in the coming years, as well as to the possibility that binary compact object mergers could explain short-duration g... |
gr-qc/0202086 | Steven Detweiler | Steven Detweiler and Bernard F. Whiting | Self-force via a Green's function decomposition | PRD, in press. Enhanced emphasis on the equivalence principle | Phys.Rev.D67:024025,2003 | 10.1103/PhysRevD.67.024025 | null | gr-qc | null | The gravitational field of a particle of small mass \mu moving through curved
spacetime is naturally decomposed into two parts each of which satisfies the
perturbed Einstein equations through O(\mu). One part is an inhomogeneous field
which, near the particle, looks like the \mu/r field distorted by the local
Riemann... | [
{
"created": "Mon, 25 Feb 2002 20:34:29 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Mar 2002 21:13:44 GMT",
"version": "v2"
},
{
"created": "Thu, 21 Nov 2002 19:07:39 GMT",
"version": "v3"
}
] | 2010-05-12 | [
[
"Detweiler",
"Steven",
""
],
[
"Whiting",
"Bernard F.",
""
]
] | The gravitational field of a particle of small mass \mu moving through curved spacetime is naturally decomposed into two parts each of which satisfies the perturbed Einstein equations through O(\mu). One part is an inhomogeneous field which, near the particle, looks like the \mu/r field distorted by the local Riemann t... |
gr-qc/0505150 | Gordon McCabe | Gordon McCabe | The Topology of Branching Universes | null | Found.Phys.Lett. 18 (2005) 665-676 | 10.1007/s10702-005-1319-9 | null | gr-qc | null | The purpose of this paper is to survey the possible topologies of branching
space-times, and, in particular, to refute the popular notion in the literature
that a branching space-time requires a non-Hausdorff topology.
| [
{
"created": "Mon, 30 May 2005 12:49:22 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"McCabe",
"Gordon",
""
]
] | The purpose of this paper is to survey the possible topologies of branching space-times, and, in particular, to refute the popular notion in the literature that a branching space-time requires a non-Hausdorff topology. |
1209.3355 | Zoran Pazameta | Zoran Pazameta | A three-layer preon star model from exact piecewise-continuous solutions
of Einstein's equations | null | null | null | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Einstein equations are solved algebraically to model a hybrid
astrophysical compact object consisting of a preon gas core, a mantle of
electrically charged hot quark-gluon plasma, and an outer envelope of charged
hadronic matter which is matched to an exterior Reissner-Nordstrom vacuum. The
piecewise-continuous m... | [
{
"created": "Sat, 15 Sep 2012 04:04:19 GMT",
"version": "v1"
},
{
"created": "Tue, 1 May 2018 03:45:06 GMT",
"version": "v2"
}
] | 2018-05-02 | [
[
"Pazameta",
"Zoran",
""
]
] | The Einstein equations are solved algebraically to model a hybrid astrophysical compact object consisting of a preon gas core, a mantle of electrically charged hot quark-gluon plasma, and an outer envelope of charged hadronic matter which is matched to an exterior Reissner-Nordstrom vacuum. The piecewise-continuous met... |
2404.04982 | Hang Liu | Hang Liu, Hong Guo and Ru Ling | Quasinormal Modes of Analog Rotating Black Holes in 2-Dimensional
Photon-Fluid Model | 32pages,6figures. Accepted for publication in PRD | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was recently found that the optical field fluctuations in self-defocusing
media can be described by sound waves propagating in a two-dimensional
photon-fluid. This photon-fluid is controlled by the driving beam and serves as
the background in which the sound waves can experience an effective curved
spacetime, such... | [
{
"created": "Sun, 7 Apr 2024 15:02:21 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Jun 2024 08:04:07 GMT",
"version": "v2"
}
] | 2024-06-24 | [
[
"Liu",
"Hang",
""
],
[
"Guo",
"Hong",
""
],
[
"Ling",
"Ru",
""
]
] | It was recently found that the optical field fluctuations in self-defocusing media can be described by sound waves propagating in a two-dimensional photon-fluid. This photon-fluid is controlled by the driving beam and serves as the background in which the sound waves can experience an effective curved spacetime, such t... |
1802.09842 | Serhii Samokhvalov E. | S.E. Samokhvalov | Group theory approach to unification of gravity with internal symmetry
gauge interactions: II. Relativity of charges and masses | 8 pages. Translation into English | Probl. Nucl. Phys. Cosm. Rays 35 (1991) 50-58. Printed in Ukraine | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The variant of electrogravitational unification has been studied on base of
principle of relativity of charges and masses.
| [
{
"created": "Tue, 27 Feb 2018 12:06:40 GMT",
"version": "v1"
}
] | 2018-02-28 | [
[
"Samokhvalov",
"S. E.",
""
]
] | The variant of electrogravitational unification has been studied on base of principle of relativity of charges and masses. |
2002.08179 | Aicha Mohadi | A. Mohadi and N. Mebarki and M.Boussahel | Spin Quantum Entanglement in a General Curved Static Space-Time | 12 pages, 12 figures, | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A general formalism of the spin quantum entanglement in a curved space-time
represented. As examples Kerr and non commutative Reissner- Nordstr\"om models
are considered. The behaviors of the concurrence and entanglement entropy as a
function of the various parameters are also discussed.
| [
{
"created": "Tue, 18 Feb 2020 07:32:37 GMT",
"version": "v1"
}
] | 2020-02-20 | [
[
"Mohadi",
"A.",
""
],
[
"Mebarki",
"N.",
""
],
[
"Boussahel",
"M.",
""
]
] | A general formalism of the spin quantum entanglement in a curved space-time represented. As examples Kerr and non commutative Reissner- Nordstr\"om models are considered. The behaviors of the concurrence and entanglement entropy as a function of the various parameters are also discussed. |
1011.6608 | Nijo Varghese Mr. | Nijo Varghese and V C Kuriakose | Evolution of massive fields around a black hole in Horava gravity | The article was fully rewritten, references added, accepted to GRG | Gen.Rel.Grav.43:2757-2767,2011 | 10.1007/s10714-011-1201-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the evolution of massive scalar field in the spacetime geometry of
Kehagias-Sfetsos(KS) black hole in deformed Horava-Lifshitz(HL) gravity by
numerical analysis. We find that the signature of HL theory is encoded in the
quasinormal mode(QNM) phase of the evolution of field. The QNM phase in the
evolution pro... | [
{
"created": "Tue, 30 Nov 2010 16:58:10 GMT",
"version": "v1"
},
{
"created": "Mon, 23 May 2011 10:21:08 GMT",
"version": "v2"
}
] | 2011-09-28 | [
[
"Varghese",
"Nijo",
""
],
[
"Kuriakose",
"V C",
""
]
] | We study the evolution of massive scalar field in the spacetime geometry of Kehagias-Sfetsos(KS) black hole in deformed Horava-Lifshitz(HL) gravity by numerical analysis. We find that the signature of HL theory is encoded in the quasinormal mode(QNM) phase of the evolution of field. The QNM phase in the evolution proce... |
1703.03403 | Shahram Panahiyan | S. H. Hendi, B. Eslam Panah, S. Panahiyan, A. Sheykhi | Dilatonic BTZ black holes with power-law field | 15 pages, 8 figures, 1 table. accepted in Phys. Lett. B | Phys. Lett. B 767 (2017) 214-225 | 10.1016/j.physletb.2017.01.066 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by low energy effective action of string theory and large
applications of BTZ black holes, we will consider minimal coupling between
dilaton and nonlinear electromagnetic fields in three dimensions. The main goal
is studying thermodynamical structure of black holes in this set up.
Temperature and heat capac... | [
{
"created": "Thu, 9 Mar 2017 09:05:18 GMT",
"version": "v1"
}
] | 2017-03-13 | [
[
"Hendi",
"S. H.",
""
],
[
"Panah",
"B. Eslam",
""
],
[
"Panahiyan",
"S.",
""
],
[
"Sheykhi",
"A.",
""
]
] | Motivated by low energy effective action of string theory and large applications of BTZ black holes, we will consider minimal coupling between dilaton and nonlinear electromagnetic fields in three dimensions. The main goal is studying thermodynamical structure of black holes in this set up. Temperature and heat capacit... |
2306.10086 | Hamed Pejhan | Jean-Pierre Gazeau and Hamed Pejhan | Covariant Quantization of the Partially Massless Graviton Field in de
Sitter Spacetime | 24 pages, no figure, version accepted for publication in Physical
Review D | Phys. Rev. D 108, 065012 (2023) | 10.1103/PhysRevD.108.065012 | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We present a covariant quantization scheme for the so-called "partially
massless" graviton field in de Sitter spacetime. Our approach is founded on the
principles of the de Sitter group representation theory (in the sense given by
Wigner), the Wightman-G\"{a}rding axioms for gauge-invariant fields
(Gupta-Bleuler sche... | [
{
"created": "Fri, 16 Jun 2023 12:56:23 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Jun 2023 10:48:04 GMT",
"version": "v2"
},
{
"created": "Fri, 1 Sep 2023 06:27:05 GMT",
"version": "v3"
}
] | 2023-09-25 | [
[
"Gazeau",
"Jean-Pierre",
""
],
[
"Pejhan",
"Hamed",
""
]
] | We present a covariant quantization scheme for the so-called "partially massless" graviton field in de Sitter spacetime. Our approach is founded on the principles of the de Sitter group representation theory (in the sense given by Wigner), the Wightman-G\"{a}rding axioms for gauge-invariant fields (Gupta-Bleuler scheme... |
2203.10590 | Herondy Mota | E. J. B. Ferreira, E. R. Bezerra de Mello, H. F. Santana Mota | Quantum Brownian motion for a particle in analog expanding cosmologies
in the presence of disclination | 14 pages, 3 figures. Revised version accepted to be published in
Physical Review D | null | 10.1103/PhysRevD.105.125014 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this paper we study the quantum brownian motion of a scalar point particle
in the analog Friedman-Robertson-Walker spacetime in the presence of a
disclination, in a condensed matter system. The analog spacetime is obtained as
an effective description of a Bose-Einstein condensate in terms of quantum
excitations of... | [
{
"created": "Sun, 20 Mar 2022 16:14:41 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Jun 2022 13:43:29 GMT",
"version": "v2"
}
] | 2022-07-13 | [
[
"Ferreira",
"E. J. B.",
""
],
[
"de Mello",
"E. R. Bezerra",
""
],
[
"Mota",
"H. F. Santana",
""
]
] | In this paper we study the quantum brownian motion of a scalar point particle in the analog Friedman-Robertson-Walker spacetime in the presence of a disclination, in a condensed matter system. The analog spacetime is obtained as an effective description of a Bose-Einstein condensate in terms of quantum excitations of s... |
1804.06298 | Giorgio Orlando | Nicola Bartolo, Ahmad Hoseinpour, Giorgio Orlando, Sabino Matarrese,
Moslem Zarei | Photon-graviton scattering: A new way to detect anisotropic
gravitational waves? | 15 pages, 1 figure. v2: references added, typos corrected, replaced
to match published version in PRD | Phys. Rev. D 98, 023518 (2018) | 10.1103/PhysRevD.98.023518 | null | gr-qc astro-ph.CO quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitons are the quantum counterparts of gravitational waves in low-energy
theories of gravity. Using Feynman rules one can compute scattering amplitudes
describing the interaction between gravitons and other fields. Here, we
consider the interaction between gravitons and photons. Using the quantum
Boltzmann equatio... | [
{
"created": "Tue, 17 Apr 2018 14:49:48 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Jul 2018 10:47:02 GMT",
"version": "v2"
}
] | 2018-07-18 | [
[
"Bartolo",
"Nicola",
""
],
[
"Hoseinpour",
"Ahmad",
""
],
[
"Orlando",
"Giorgio",
""
],
[
"Matarrese",
"Sabino",
""
],
[
"Zarei",
"Moslem",
""
]
] | Gravitons are the quantum counterparts of gravitational waves in low-energy theories of gravity. Using Feynman rules one can compute scattering amplitudes describing the interaction between gravitons and other fields. Here, we consider the interaction between gravitons and photons. Using the quantum Boltzmann equation ... |
gr-qc/9611046 | Alex Kaganovich | E.I. Guendelman and A.B. Kaganovich (Physics Department, Ben Gurion
University of the Negev, Beer Sheva, Israel) | Gravitational Theory without the Cosmological Constant Problem | 44 pages | Phys.Rev.D55:5970-5980,1997 | 10.1103/PhysRevD.55.5970 | Phys.BGU-511/96 | gr-qc | null | We develop the principle of nongravitating vacuum energy, which is
implemented by changing the measure of integration from $\sqrt{-g}d^{D}x$ to an
integration in an internal space of $D$ scalar fields $\phi_{a}$. As a
consequence of such a choice of the measure, the matter Lagrangian $L_{m}$ can
be changed by adding ... | [
{
"created": "Sun, 17 Nov 1996 07:38:30 GMT",
"version": "v1"
}
] | 2011-09-09 | [
[
"Guendelman",
"E. I.",
"",
"Physics Department, Ben Gurion\n University of the Negev, Beer Sheva, Israel"
],
[
"Kaganovich",
"A. B.",
"",
"Physics Department, Ben Gurion\n University of the Negev, Beer Sheva, Israel"
]
] | We develop the principle of nongravitating vacuum energy, which is implemented by changing the measure of integration from $\sqrt{-g}d^{D}x$ to an integration in an internal space of $D$ scalar fields $\phi_{a}$. As a consequence of such a choice of the measure, the matter Lagrangian $L_{m}$ can be changed by adding a ... |
2302.10716 | Bob Holdom | Bob Holdom | Cosmologies with turning points | 12 pages, to appear in Physics Letters B | Physics Letters B839, 10 April 2023, 137802 | 10.1016/j.physletb.2023.137802 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We explore singularity-free and geodesically-complete cosmologies based on
manifolds that are not quite Lorentzian. The metric can be either smooth
everywhere or non-degenerate everywhere, but not both, depending on the
coordinate system. The smooth metric gives an Einstein tensor that is first
order in derivatives w... | [
{
"created": "Tue, 21 Feb 2023 15:09:42 GMT",
"version": "v1"
}
] | 2023-03-02 | [
[
"Holdom",
"Bob",
""
]
] | We explore singularity-free and geodesically-complete cosmologies based on manifolds that are not quite Lorentzian. The metric can be either smooth everywhere or non-degenerate everywhere, but not both, depending on the coordinate system. The smooth metric gives an Einstein tensor that is first order in derivatives whi... |
gr-qc/0009054 | caroline dos santos | Caroline Santos | Static black holes in scalar tensor gravity | 6 pages, Latex | null | null | DTP/00/81 | gr-qc | null | We study static black hole solutions in scalar tensor gravity. We present
exact solutions in hiperextended models with a quadratic scalar potential.
| [
{
"created": "Fri, 15 Sep 2000 15:19:36 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Santos",
"Caroline",
""
]
] | We study static black hole solutions in scalar tensor gravity. We present exact solutions in hiperextended models with a quadratic scalar potential. |
2310.00666 | Priyanka Garg Dr. | Vinod Kumar Bhardwaj, Priyanka Garg | Quintessence scalar field model in Weyl-type $f(Q,T)$ Gravity with
$w_D-w'_D$ analysis | 20 pages, 21 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | In the present study, we explore the dynamical characteristics of the
quintessence cosmological model in Weyl-type $f(Q,T)$ gravity. Here, $T$
represents the trace of the matter energy-momentum tensor, and $Q$ symbolizes
the nonmetricity tensor. We propose a solution to the field equation using the
specific parametri... | [
{
"created": "Sun, 1 Oct 2023 13:26:17 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Oct 2023 07:18:34 GMT",
"version": "v2"
}
] | 2023-10-05 | [
[
"Bhardwaj",
"Vinod Kumar",
""
],
[
"Garg",
"Priyanka",
""
]
] | In the present study, we explore the dynamical characteristics of the quintessence cosmological model in Weyl-type $f(Q,T)$ gravity. Here, $T$ represents the trace of the matter energy-momentum tensor, and $Q$ symbolizes the nonmetricity tensor. We propose a solution to the field equation using the specific parametriza... |
2107.13796 | LSC P&P Committee | The LIGO Scientific Collaboration, the Virgo Collaboration, and the
KAGRA Collaboration: R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C.
Adams, N. Adhikari, R. X. Adhikari, V. B. Adya, C. Affeldt, D. Agarwal, M.
Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith,
T. Akutsu, S. Alba... | All-sky search for long-duration gravitational-wave bursts in the third
Advanced LIGO and Advanced Virgo run | null | null | 10.1103/PhysRevD.104.102001 | P2100063 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | After the detection of gravitational waves from compact binary coalescences,
the search for transient gravitational-wave signals with less well-defined
waveforms for which matched filtering is not well-suited is one of the
frontiers for gravitational-wave astronomy. Broadly classified into "short" $
\lesssim 1~$\,s a... | [
{
"created": "Thu, 29 Jul 2021 07:46:36 GMT",
"version": "v1"
}
] | 2022-04-13 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"the KAGRA Collaboration",
"",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Acernese",
"F.",
""
],
[
"Ackley",
... | After the detection of gravitational waves from compact binary coalescences, the search for transient gravitational-wave signals with less well-defined waveforms for which matched filtering is not well-suited is one of the frontiers for gravitational-wave astronomy. Broadly classified into "short" $ \lesssim 1~$\,s and... |
2112.01558 | Slimane Zaim | Abdellah Touati, Slimane Zaim | Geodesic equation in non-commutative gauge theory of gravity | 23 pages, 18 figures | Chinese Physics C 2022 | 10.1088/1674-1137/ac75ca | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | In this work, we construct a non-commutative (NC) gauge theory of gravity for
any metric with spherical symmetries, where we use a non-diagonal tetrad field.
The deformed gauge potentials (tetrad fields) and the components of deformed
metric are computed to the second order in the NC parameter $\Theta^{\mu\nu}$,
as t... | [
{
"created": "Thu, 2 Dec 2021 19:03:36 GMT",
"version": "v1"
}
] | 2022-11-04 | [
[
"Touati",
"Abdellah",
""
],
[
"Zaim",
"Slimane",
""
]
] | In this work, we construct a non-commutative (NC) gauge theory of gravity for any metric with spherical symmetries, where we use a non-diagonal tetrad field. The deformed gauge potentials (tetrad fields) and the components of deformed metric are computed to the second order in the NC parameter $\Theta^{\mu\nu}$, as the... |
2302.14104 | Dinesh Chandra Maurya | Dinesh Chandra Maurya, Archana Dixit, Anirudh Pradhan | Transit String Dark Energy Models in $f(Q)$ Gravity | 24 pages, 12 Figures | International Journal of Geometric Methods in Modern Physics,
(2023) | 10.1142/S0219887823501347 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have investigated an anisotropic cosmological model in
$f(Q)$ gravity with string fluid in LRS Bianchi type-I universe. We have
considered the arbitrary function $f(Q)=Q+\alpha\sqrt{~Q}+2\Lambda$ where
$\alpha$ is model free parameter and $\Lambda$ is the cosmological constant. We
have established a... | [
{
"created": "Thu, 2 Feb 2023 14:49:38 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Mar 2023 01:34:51 GMT",
"version": "v2"
}
] | 2023-03-02 | [
[
"Maurya",
"Dinesh Chandra",
""
],
[
"Dixit",
"Archana",
""
],
[
"Pradhan",
"Anirudh",
""
]
] | In this paper, we have investigated an anisotropic cosmological model in $f(Q)$ gravity with string fluid in LRS Bianchi type-I universe. We have considered the arbitrary function $f(Q)=Q+\alpha\sqrt{~Q}+2\Lambda$ where $\alpha$ is model free parameter and $\Lambda$ is the cosmological constant. We have established a r... |
0910.0139 | Oliver Rinne | Oliver Rinne | An axisymmetric evolution code for the Einstein equations on
hyperboloidal slices | 21 pages, 4 figures. Minor additions, updated to agree with journal
version | Class.Quant.Grav.27:035014,2010 | 10.1088/0264-9381/27/3/035014 | DAMTP-2009-63 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the first stable dynamical numerical evolutions of the Einstein
equations in terms of a conformally rescaled metric on hyperboloidal
hypersurfaces extending to future null infinity. Axisymmetry is imposed in
order to reduce the computational cost. The formulation is based on an earlier
axisymmetric evoluti... | [
{
"created": "Thu, 1 Oct 2009 11:36:24 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Jan 2010 13:01:42 GMT",
"version": "v2"
}
] | 2010-01-15 | [
[
"Rinne",
"Oliver",
""
]
] | We present the first stable dynamical numerical evolutions of the Einstein equations in terms of a conformally rescaled metric on hyperboloidal hypersurfaces extending to future null infinity. Axisymmetry is imposed in order to reduce the computational cost. The formulation is based on an earlier axisymmetric evolution... |
1108.0816 | Laura Bethke | Laura Bethke, Joao Magueijo | Chirality of tensor perturbations for complex values of the Immirzi
parameter | 6 pages, 1 figure | null | 10.1088/0264-9381/29/5/052001 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we generalise previous work on tensor perturbations in a de
Sitter background in terms of Ashtekar variables to cover all complex values of
the Immirzi parameter gamma (previous work was restricted to imaginary gamma).
Particular attention is paid to the case of real gamma. Following the same
approach a... | [
{
"created": "Wed, 3 Aug 2011 10:45:22 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Bethke",
"Laura",
""
],
[
"Magueijo",
"Joao",
""
]
] | In this paper we generalise previous work on tensor perturbations in a de Sitter background in terms of Ashtekar variables to cover all complex values of the Immirzi parameter gamma (previous work was restricted to imaginary gamma). Particular attention is paid to the case of real gamma. Following the same approach as ... |
1812.11450 | Ido Kaminer | Jonathan Nemirovsky, Eliahu Cohen, Ido Kaminer | Spin-Spacetime Censorship | 61 pages, 4 figures | Annalen der Physik 2100348 (2021) | 10.1002/andp.202100348 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum entanglement and relativistic causality are key concepts in
theoretical works seeking to unify quantum mechanics and gravity. In this
article, we show that the interplay between relativity theory and quantum
entanglement has intriguing consequences for the spacetime surrounding
elementary particles with spin.... | [
{
"created": "Sun, 30 Dec 2018 00:26:58 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Oct 2019 10:45:38 GMT",
"version": "v2"
}
] | 2021-12-07 | [
[
"Nemirovsky",
"Jonathan",
""
],
[
"Cohen",
"Eliahu",
""
],
[
"Kaminer",
"Ido",
""
]
] | Quantum entanglement and relativistic causality are key concepts in theoretical works seeking to unify quantum mechanics and gravity. In this article, we show that the interplay between relativity theory and quantum entanglement has intriguing consequences for the spacetime surrounding elementary particles with spin. C... |
0705.0688 | Giovanni Andrea Prodi | IGEC-2 Collaboration | Results of the IGEC-2 search for gravitational wave bursts during 2005 | 10 pages, to be submitted to Phys. Rev. D | Phys.Rev.D76:102001,2007 | 10.1103/PhysRevD.76.102001 | null | gr-qc | null | The network of resonant bar detectors of gravitational waves resumed
coordinated observations within the International Gravitational Event
Collaboration (IGEC-2). Four detectors are taking part in this collaboration:
ALLEGRO, AURIGA, EXPLORER and NAUTILUS. We present here the results of the
search for gravitational w... | [
{
"created": "Fri, 4 May 2007 17:58:20 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"2 Collaboration",
"",
""
]
] | The network of resonant bar detectors of gravitational waves resumed coordinated observations within the International Gravitational Event Collaboration (IGEC-2). Four detectors are taking part in this collaboration: ALLEGRO, AURIGA, EXPLORER and NAUTILUS. We present here the results of the search for gravitational wav... |
2204.08579 | Valerio Faraoni | Sonia Jose, Alexandre Leblanc, Valerio Faraoni | When can we compute analytically lookback time, age of the universe, and
luminosity distance? | 10 pages, latex | null | 10.1140/epjc/s10052-022-10519-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Friedmann-Lema\^itre-Robertson-Walker cosmology, it is sometimes possible
to compute analytically lookback time, age of the universe, and luminosity
distance versus redshift, expressing them in terms of a finite number of
elementary functions. We classify these situations using the Chebyshev theorem
of integration... | [
{
"created": "Mon, 18 Apr 2022 22:21:24 GMT",
"version": "v1"
}
] | 2022-07-13 | [
[
"Jose",
"Sonia",
""
],
[
"Leblanc",
"Alexandre",
""
],
[
"Faraoni",
"Valerio",
""
]
] | In Friedmann-Lema\^itre-Robertson-Walker cosmology, it is sometimes possible to compute analytically lookback time, age of the universe, and luminosity distance versus redshift, expressing them in terms of a finite number of elementary functions. We classify these situations using the Chebyshev theorem of integration a... |
1709.08506 | Shih-Yuin Lin | Shih-Yuin Lin | Quantum radiation by an Unruh-DeWitt detector in oscillatory motion | 30 pages, 10 figures, partly based on [arXiv:1601.07006] | null | 10.1007/JHEP11(2017)102 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum radiated power emitted by an Unruh-DeWitt (UD) detector in linear
oscillatory motion in (3+1)D Minkowski space, with the internal harmonic
oscillator minimally coupled to a massless scalar field, is obtained
non-perturbatively by numerical method. The signal of the Unruh-like effect
experienced by the detecto... | [
{
"created": "Mon, 25 Sep 2017 14:19:11 GMT",
"version": "v1"
}
] | 2017-12-06 | [
[
"Lin",
"Shih-Yuin",
""
]
] | Quantum radiated power emitted by an Unruh-DeWitt (UD) detector in linear oscillatory motion in (3+1)D Minkowski space, with the internal harmonic oscillator minimally coupled to a massless scalar field, is obtained non-perturbatively by numerical method. The signal of the Unruh-like effect experienced by the detector ... |
2201.03076 | Israel Quiros | Israel Quiros | Gauge invariant approach to nonmetricity theories and the second clock
effect | 18 pages, no figures. A new statement of the gauge invariant parallel
transport law has been achieved, which allows to have a parallel transport
law that applies to any vector and/or tensor fields without exception. The
basic results of the manuscript have not changed | null | null | null | gr-qc astro-ph.CO math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we discuss on recent attempts aimed at demonstrating that,
contrary to well-known results, the second clock effect (SCE) does not take
place in generalized Weyl spaces -- spaces with arbitrary nonmetricity --
denoted here as $W_4$ spaces. These attempts include Weyl gauge theories of
gravity, as well as... | [
{
"created": "Sun, 9 Jan 2022 19:38:15 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Jan 2022 16:21:47 GMT",
"version": "v2"
},
{
"created": "Sat, 29 Jan 2022 02:00:12 GMT",
"version": "v3"
},
{
"created": "Thu, 21 Apr 2022 19:37:03 GMT",
"version": "v4"
}
] | 2022-04-25 | [
[
"Quiros",
"Israel",
""
]
] | In this paper we discuss on recent attempts aimed at demonstrating that, contrary to well-known results, the second clock effect (SCE) does not take place in generalized Weyl spaces -- spaces with arbitrary nonmetricity -- denoted here as $W_4$ spaces. These attempts include Weyl gauge theories of gravity, as well as t... |
gr-qc/0302022 | Valdir B. Bezerra | Geusa de A. Marques (UFPb/UEPb) and V. B. Bezerra (UFPb) | On a generalized gravitational Aharonov-Bohm effect | 10 pages, LATEX file | null | 10.1142/S021773230401237X | null | gr-qc | null | A massless spinor particle is considered in the background gravitational
field due to a rotating body. In the weak field approximation it is shown that
the solution of the Weyl equations depend on the angular momentum of the
rotating body, which does not affect the curvature in this approximation. This
result may be ... | [
{
"created": "Fri, 7 Feb 2003 11:40:42 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Marques",
"Geusa de A.",
"",
"UFPb/UEPb"
],
[
"Bezerra",
"V. B.",
"",
"UFPb"
]
] | A massless spinor particle is considered in the background gravitational field due to a rotating body. In the weak field approximation it is shown that the solution of the Weyl equations depend on the angular momentum of the rotating body, which does not affect the curvature in this approximation. This result may be lo... |
gr-qc/9609058 | null | E. Mauceli, Z. K. Geng, W. O. Hamilton, W. W. Johnson, S. Merkowitz,
A. Morse, B. Price, and N. Solomonson | The Allegro gravitational wave detector: Data acquisition and analysis | 26 pages, 18 figures | Phys.Rev. D54 (1996) 1264-1275 | 10.1103/PhysRevD.54.1264 | null | gr-qc | null | We discuss the data acquisition and analysis procedures used on the Allegro
gravity wave detector, including a full description of the filtering used for
bursts of gravity waves. The uncertainties introduced into timing and signal
strength estimates due to stationary noise are measured, giving the windows for
both qu... | [
{
"created": "Tue, 24 Sep 1996 19:13:54 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Oct 1996 22:09:42 GMT",
"version": "v2"
},
{
"created": "Sat, 26 Oct 1996 05:09:42 GMT",
"version": "v3"
}
] | 2009-10-28 | [
[
"Mauceli",
"E.",
""
],
[
"Geng",
"Z. K.",
""
],
[
"Hamilton",
"W. O.",
""
],
[
"Johnson",
"W. W.",
""
],
[
"Merkowitz",
"S.",
""
],
[
"Morse",
"A.",
""
],
[
"Price",
"B.",
""
],
[
"Solomonson",
... | We discuss the data acquisition and analysis procedures used on the Allegro gravity wave detector, including a full description of the filtering used for bursts of gravity waves. The uncertainties introduced into timing and signal strength estimates due to stationary noise are measured, giving the windows for both quan... |
1106.0331 | Vojtech Pravda | Tom\'a\v{s} M\'alek, Vojt\v{e}ch Pravda | Type III and N solutions to quadratic gravity | 8 pages | Phys.Rev.D84:024047,2011 | 10.1103/PhysRevD.84.024047 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study exact vacuum solutions to quadratic gravity (QG) of the Weyl types N
and III. We show that in an arbitrary dimension all Einstein spacetimes of the
Weyl type N with an appropriately chosen effective cosmological constant
$\Lambda$ are exact solutions to QG and we refer to explicitly known metrics
within this... | [
{
"created": "Wed, 1 Jun 2011 22:09:04 GMT",
"version": "v1"
}
] | 2011-08-12 | [
[
"Málek",
"Tomáš",
""
],
[
"Pravda",
"Vojtěch",
""
]
] | We study exact vacuum solutions to quadratic gravity (QG) of the Weyl types N and III. We show that in an arbitrary dimension all Einstein spacetimes of the Weyl type N with an appropriately chosen effective cosmological constant $\Lambda$ are exact solutions to QG and we refer to explicitly known metrics within this c... |
1201.3398 | Fotini Markopoulou Kalamara | Fotini Markopoulou | The Computing Spacetime | null | Lectures in Computer Science, Vol 7318 (2012) 472 | 10.1007/978-3-642-30870-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The idea that the Universe is a program in a giant quantum computer is both
fascinating and suffers from various problems. Nonetheless, it can provide a
unified picture of physics and this can be very useful for the problem of
Quantum Gravity where such a unification is necessary. In previous work we
proposed Quantum... | [
{
"created": "Tue, 17 Jan 2012 00:09:14 GMT",
"version": "v1"
}
] | 2012-08-03 | [
[
"Markopoulou",
"Fotini",
""
]
] | The idea that the Universe is a program in a giant quantum computer is both fascinating and suffers from various problems. Nonetheless, it can provide a unified picture of physics and this can be very useful for the problem of Quantum Gravity where such a unification is necessary. In previous work we proposed Quantum G... |
2204.08492 | Hao-Jui Kuan | Hao-Jui Kuan, Christian J. Kr\"uger, Arthur G. Suvorov, Kostas D.
Kokkotas | Constraining equation of state groups from $g$-mode asteroseismology | 14 pages, 10 figures, 1 table; accepted by MNRAS; typos in equation
(10) corrected | null | 10.1093/mnras/stac1101 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Buoyancy-restored modes inside neutron stars depend sensitively on both the
microphysical (e.g., composition and entropy gradients) and macrophysical
(e.g., stellar mass and radius) properties of the star. Asteroseismology
efforts for $g$-modes are therefore particularly promising avenues for
recovering information c... | [
{
"created": "Mon, 18 Apr 2022 18:00:36 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Apr 2023 14:33:29 GMT",
"version": "v2"
}
] | 2023-04-17 | [
[
"Kuan",
"Hao-Jui",
""
],
[
"Krüger",
"Christian J.",
""
],
[
"Suvorov",
"Arthur G.",
""
],
[
"Kokkotas",
"Kostas D.",
""
]
] | Buoyancy-restored modes inside neutron stars depend sensitively on both the microphysical (e.g., composition and entropy gradients) and macrophysical (e.g., stellar mass and radius) properties of the star. Asteroseismology efforts for $g$-modes are therefore particularly promising avenues for recovering information con... |
0804.4346 | Allan Joseph Michael Medved | A.J.M. Medved | On the Kerr Quantum Area Spectrum | Roughly 8 pages; (v2) added references and very minor changes | Class.Quant.Grav.25:205014,2008 | 10.1088/0264-9381/25/20/205014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Suppose that there is a quantum operator that describes the horizon area of a
black hole. Then what would be the form of the ensuing quantum spectrum? In
this regard, it has been conjectured that the characteristic frequencies of the
black hole oscillations can be used to calibrate the spacing between the
spectral le... | [
{
"created": "Mon, 28 Apr 2008 19:33:43 GMT",
"version": "v1"
},
{
"created": "Thu, 1 May 2008 07:39:02 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Medved",
"A. J. M.",
""
]
] | Suppose that there is a quantum operator that describes the horizon area of a black hole. Then what would be the form of the ensuing quantum spectrum? In this regard, it has been conjectured that the characteristic frequencies of the black hole oscillations can be used to calibrate the spacing between the spectral leve... |
2309.13204 | Alejandro C\'ardenas-Avenda\~no | Hengrui Zhu, Justin L. Ripley, Alejandro C\'ardenas-Avenda\~no, Frans
Pretorius | Challenges in Quasinormal Mode Extraction: Perspectives from Numerical
solutions to the Teukolsky Equation | 13+6 pages, 12 figures. V2: Minor changes to match the published
version | null | 10.1103/PhysRevD.109.044010 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The intricacies of black hole ringdown analysis are amplified by the absence
of a complete set of orthogonal basis functions for quasinormal modes. Although
damped sinusoids effectively fit the ringdown signals from binary black hole
mergers, the risk of overfitting remains, due to initial transients and
nonlinear ef... | [
{
"created": "Fri, 22 Sep 2023 22:57:25 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Oct 2023 14:40:33 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Feb 2024 15:24:29 GMT",
"version": "v3"
}
] | 2024-02-09 | [
[
"Zhu",
"Hengrui",
""
],
[
"Ripley",
"Justin L.",
""
],
[
"Cárdenas-Avendaño",
"Alejandro",
""
],
[
"Pretorius",
"Frans",
""
]
] | The intricacies of black hole ringdown analysis are amplified by the absence of a complete set of orthogonal basis functions for quasinormal modes. Although damped sinusoids effectively fit the ringdown signals from binary black hole mergers, the risk of overfitting remains, due to initial transients and nonlinear effe... |
1211.3268 | Alexander Petrov Nikolaevich | Alexander N. Petrov, Robert R. Lompay | Covariantized Noether identities and conservation laws for perturbations
in metric theories of gravity | 33 pages, no figures, to appear in Gen. Relat. Grav | Gen. Relativ. Gravit. 45, 545-579 (2013) | 10.1007/s10714-012-1487-4 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A construction of conservation laws and conserved quantities for
perturbations in arbitrary metric theories of gravity is developed. In an
arbitrary field theory, with the use of incorporating an auxiliary metric into
the initial Lagrangian covariantized Noether identities are carried out.
Identically conserved curre... | [
{
"created": "Wed, 14 Nov 2012 10:49:34 GMT",
"version": "v1"
}
] | 2013-07-02 | [
[
"Petrov",
"Alexander N.",
""
],
[
"Lompay",
"Robert R.",
""
]
] | A construction of conservation laws and conserved quantities for perturbations in arbitrary metric theories of gravity is developed. In an arbitrary field theory, with the use of incorporating an auxiliary metric into the initial Lagrangian covariantized Noether identities are carried out. Identically conserved current... |
1601.05337 | Gilberto Medeiros Kremer | Rudinei C. S. Jantsch, Marcus H. B. Christmann and Gilberto M. Kremer | The van der Waals fluid and its role in cosmology | 8 pages, 2 figures, left and right frames of fig.1 were not in the
correct order as was explained in the text | IJMP D Vol. 25, No. 2 (2016) 1650031 | 10.1142/S0218271816500310 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the properties of a generic cosmological fluid described by the
van der Waals equation of state. Exact solutions for the energy density
evolution are found as implicit functions of the scale factor for a flat
Friedmann-Robertson-Walker space-time. The possible values of the free
parameter in the van der Wa... | [
{
"created": "Wed, 20 Jan 2016 17:20:05 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Feb 2016 09:20:49 GMT",
"version": "v2"
}
] | 2016-02-11 | [
[
"Jantsch",
"Rudinei C. S.",
""
],
[
"Christmann",
"Marcus H. B.",
""
],
[
"Kremer",
"Gilberto M.",
""
]
] | We analyze the properties of a generic cosmological fluid described by the van der Waals equation of state. Exact solutions for the energy density evolution are found as implicit functions of the scale factor for a flat Friedmann-Robertson-Walker space-time. The possible values of the free parameter in the van der Waal... |
gr-qc/0611102 | Harvinder Kaur Jassal | H. K. Jassal and L. Sriramkumar (HRI, Allahabad) | Entropy of BTZ black strings in the brick wall approach | v1: Revtex4, 11 pages; v2: Minor changes and additions in response to
referees' comments, accepted for publication in Classical and Quantum Gravity | Class.Quant.Grav.24:2589-2602,2007 | 10.1088/0264-9381/24/10/006 | null | gr-qc hep-th | null | During the last few years, exact solutions that describe black holes that are
bound to a two-brane in a four dimensional anti-de Sitter bulk have been
constructed. In situations wherein there is a negative cosmological constant on
the brane, for large masses, these solutions are exactly the rotating BTZ black
holes o... | [
{
"created": "Mon, 20 Nov 2006 06:11:55 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Apr 2007 05:19:24 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Jassal",
"H. K.",
"",
"HRI, Allahabad"
],
[
"Sriramkumar",
"L.",
"",
"HRI, Allahabad"
]
] | During the last few years, exact solutions that describe black holes that are bound to a two-brane in a four dimensional anti-de Sitter bulk have been constructed. In situations wherein there is a negative cosmological constant on the brane, for large masses, these solutions are exactly the rotating BTZ black holes on ... |
1507.03171 | Jose Socorro Garcia | J. Socorro and L. Toledo Sesma | Time-dependent toroidal compactification proposals and the Bianchi type
II model: classical and quantum solutions | 13 pages, 1 figure, written in latex2e. arXiv admin note: substantial
text overlap with arXiv:1501.02779 | Eur. Phys. J. Plus {\bf 131} 71 (10 pages) (2016) | 10.1140/epjp/i2016-16071-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we construct an effective four-dimensional model by
compactifying a ten-dimensional theory of gravity coupled with a real scalar
dilaton field on a time-dependent torus without the contributions of fluxes as
first approximation. This approach is applied to anisotropic cosmological
Bianchi type II model f... | [
{
"created": "Sun, 12 Jul 2015 00:15:39 GMT",
"version": "v1"
}
] | 2019-11-21 | [
[
"Socorro",
"J.",
""
],
[
"Sesma",
"L. Toledo",
""
]
] | In this work we construct an effective four-dimensional model by compactifying a ten-dimensional theory of gravity coupled with a real scalar dilaton field on a time-dependent torus without the contributions of fluxes as first approximation. This approach is applied to anisotropic cosmological Bianchi type II model for... |
1906.11735 | Juliano Neves | Juliano C. S. Neves | Upper bound on the GUP parameter using the black hole shadow | 10 pages, 6 figures and 1 table. Version 2 with minor changes.
Published in The European Physical Journal C | Eur. Phys. J. C 80, 343 (2020) | 10.1140/epjc/s10052-020-7913-y | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An upper bound on the parameter that provides a generalized uncertainty
principle (GUP) is obtained from the black hole shadow. With the aid of a
recent constraint between regular black holes and the GUP parameter, it is
indicated a relation between this parameter and the deviation from circularity
of the black hole ... | [
{
"created": "Thu, 27 Jun 2019 15:32:44 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Apr 2020 15:13:40 GMT",
"version": "v2"
}
] | 2020-04-29 | [
[
"Neves",
"Juliano C. S.",
""
]
] | An upper bound on the parameter that provides a generalized uncertainty principle (GUP) is obtained from the black hole shadow. With the aid of a recent constraint between regular black holes and the GUP parameter, it is indicated a relation between this parameter and the deviation from circularity of the black hole sh... |
2206.13681 | Baocheng Zhang | Jiatong Yan and Baocheng Zhang | Effect of spacetime dimensions on quantum entanglement between two
uniformly accelerated atoms | null | JHEP10 (2022) 051 | 10.1007/JHEP10(2022)051 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the entanglement dynamics for a quantum system composed of two
uniformly accelerated Unruh-DeWitt detectors in different spacetime dimensions.
It is found that the range of parameters in which entanglement can be generated
is expanded but the amount of generated entanglement is decreased with the
incre... | [
{
"created": "Tue, 28 Jun 2022 01:15:54 GMT",
"version": "v1"
}
] | 2022-10-12 | [
[
"Yan",
"Jiatong",
""
],
[
"Zhang",
"Baocheng",
""
]
] | We investigate the entanglement dynamics for a quantum system composed of two uniformly accelerated Unruh-DeWitt detectors in different spacetime dimensions. It is found that the range of parameters in which entanglement can be generated is expanded but the amount of generated entanglement is decreased with the increas... |
2009.11333 | Srishti Tiwari | Srishti Tiwari and Achamveedu Gopakumar | Combining Post-Circular and Pad\'e approximations to compute Fourier
domain templates for eccentric inspirals | 25 pages, 6 figures, 1 table; Accepted in Physical Review D | null | 10.1103/PhysRevD.102.084042 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Observations of transient gravitational wave (GW) events with non-negligible
orbital eccentricity can be highly rewarding from astrophysical considerations.
Ready-to-use fully analytic frequency domain inspiral GW templates are crucial
ingredients to construct eccentric inspiral-merger-ringdown waveform families,
req... | [
{
"created": "Wed, 23 Sep 2020 18:32:44 GMT",
"version": "v1"
}
] | 2020-10-28 | [
[
"Tiwari",
"Srishti",
""
],
[
"Gopakumar",
"Achamveedu",
""
]
] | Observations of transient gravitational wave (GW) events with non-negligible orbital eccentricity can be highly rewarding from astrophysical considerations. Ready-to-use fully analytic frequency domain inspiral GW templates are crucial ingredients to construct eccentric inspiral-merger-ringdown waveform families, requi... |
2104.10559 | Simone Albanesi | Simone Albanesi, Alessandro Nagar, and Sebastiano Bernuzzi | Effective one-body model for extreme-mass-ratio spinning binaries on
eccentric equatorial orbits: testing radiation reaction and waveform | 38 pages, 22 figures, Phys. Rev. D, matches published PRD version | Phys. Rev. D 104, 024067 (2021) | 10.1103/PhysRevD.104.024067 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a systematic analysis of the multipolar gravitational waveform,
energy and angular momentum fluxes emitted by a nonspinning test particle
orbiting a Kerr black hole along equatorial, eccentric orbits. These quantities
are computed by numerically solving the Teukolsky equation in the time domain
and are the... | [
{
"created": "Wed, 21 Apr 2021 14:30:46 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Jul 2021 12:55:29 GMT",
"version": "v2"
},
{
"created": "Fri, 24 Dec 2021 08:39:25 GMT",
"version": "v3"
},
{
"created": "Wed, 30 Mar 2022 10:32:39 GMT",
"version": "v4"
}
] | 2022-03-31 | [
[
"Albanesi",
"Simone",
""
],
[
"Nagar",
"Alessandro",
""
],
[
"Bernuzzi",
"Sebastiano",
""
]
] | We provide a systematic analysis of the multipolar gravitational waveform, energy and angular momentum fluxes emitted by a nonspinning test particle orbiting a Kerr black hole along equatorial, eccentric orbits. These quantities are computed by numerically solving the Teukolsky equation in the time domain and are then ... |
gr-qc/0211005 | Victor M. Villalba | Victor M. Villalba, Walter Greiner | Creation of Dirac Particles in the Presence of a Constant Electric Field
in an Anisotropic Bianchi I Universe | 9 pages | Mod.Phys.Lett. A17 (2002) 1883-1891 | 10.1142/S0217732302008289 | null | gr-qc hep-th | null | In this article we compute the density of Dirac particles created by a
cosmological anisotropic Bianchi I universe in the presence of a constant
electric field. We show that the particle distribution becomes thermal when one
neglects the electric interaction.
| [
{
"created": "Fri, 1 Nov 2002 16:23:00 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Villalba",
"Victor M.",
""
],
[
"Greiner",
"Walter",
""
]
] | In this article we compute the density of Dirac particles created by a cosmological anisotropic Bianchi I universe in the presence of a constant electric field. We show that the particle distribution becomes thermal when one neglects the electric interaction. |
1407.7178 | Stanley Deser | S. Deser | Unconstrained canonical action for, and positive energy of, massive spin
2 | null | Can. J. Phys. 93, 395 (2015) | 10.1139/cjp-2014-0420 | BRX TH-680, CALT-TH 2014-147 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Filling a much-needed gap, we exhibit the D=4 Fierz-Pauli (FP) massive s=2
action, and its--manifestly positive--energy, in terms of its 2s+1=5
unconstrained helicity (2,1,0) excitations, after reducing and diagonalizing
the troublesome helicity-0 sector.
| [
{
"created": "Sun, 27 Jul 2014 03:20:23 GMT",
"version": "v1"
}
] | 2015-04-27 | [
[
"Deser",
"S.",
""
]
] | Filling a much-needed gap, we exhibit the D=4 Fierz-Pauli (FP) massive s=2 action, and its--manifestly positive--energy, in terms of its 2s+1=5 unconstrained helicity (2,1,0) excitations, after reducing and diagonalizing the troublesome helicity-0 sector. |
1901.03998 | Hernando Quevedo | Hachemi B. Benaoum and Hernando Quevedo | Modified Chaplygin Gas Cosmology from Geometrothermodynamics | arXiv admin note: text overlap with arXiv:1505.05873 by other authors | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The modified Chaplygin gas (MCG) cosmological model is derived by using the
geometrothermodynamics (GTD) formalism. We show that the MCG corresponds to a
system with internal thermodynamic interaction and describes the current
accelerated expansion of the universe. Moreover, we also show that the MCG can
be interpret... | [
{
"created": "Sun, 13 Jan 2019 15:14:30 GMT",
"version": "v1"
}
] | 2019-01-15 | [
[
"Benaoum",
"Hachemi B.",
""
],
[
"Quevedo",
"Hernando",
""
]
] | The modified Chaplygin gas (MCG) cosmological model is derived by using the geometrothermodynamics (GTD) formalism. We show that the MCG corresponds to a system with internal thermodynamic interaction and describes the current accelerated expansion of the universe. Moreover, we also show that the MCG can be interpreted... |
1907.00258 | Wouter Ryssens | Wouter Ryssens | On the Quantum-to-Classical Transition of Primordial Perturbations | 115 pages. Dissertation presented in fulfillment of the requirements
for the degree of Master of Physics. Supervised by Dr. W. Struyve | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Detailed measurements of the cosmic microwave background indicate the
large-scale homogeneity of the universe. On very small scales, we observe
however inhomogeneities such as galaxies, stars, planets and ourselves. In the
context of hot Big-Bang cosmology, these inhomogeneities are often explained as
the remains of ... | [
{
"created": "Sat, 29 Jun 2019 18:58:47 GMT",
"version": "v1"
}
] | 2019-07-02 | [
[
"Ryssens",
"Wouter",
""
]
] | Detailed measurements of the cosmic microwave background indicate the large-scale homogeneity of the universe. On very small scales, we observe however inhomogeneities such as galaxies, stars, planets and ourselves. In the context of hot Big-Bang cosmology, these inhomogeneities are often explained as the remains of qu... |
1804.03146 | Neil J. Cornish | Logan O'Beirne and Neil J. Cornish | Constraining the Polarization Content of Gravitational Waves with
Astrometry | 8 pages, 6 figures | Phys. Rev. D 98, 024020 (2018) | 10.1103/PhysRevD.98.024020 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves perturb the paths of photons, impacting both the
time-of-flight and the arrival direction of light from stars. Pulsar timing
arrays can detect gravitational waves by measuring the variations in the time
of flight of radio pulses, while astrometry missions such as Gaia can detect
gravitational wave... | [
{
"created": "Mon, 9 Apr 2018 18:00:01 GMT",
"version": "v1"
},
{
"created": "Thu, 17 May 2018 20:11:11 GMT",
"version": "v2"
}
] | 2018-07-18 | [
[
"O'Beirne",
"Logan",
""
],
[
"Cornish",
"Neil J.",
""
]
] | Gravitational waves perturb the paths of photons, impacting both the time-of-flight and the arrival direction of light from stars. Pulsar timing arrays can detect gravitational waves by measuring the variations in the time of flight of radio pulses, while astrometry missions such as Gaia can detect gravitational waves ... |
gr-qc/0703015 | Joachim Schr\"oter | Joachim Schr\"oter | A New Formulation of General Relativity - Part III: GR as Scalar Field
Theory | null | null | null | null | gr-qc | null | The aim of this paper (Part III) is formulating GR as a scalar field theory.
The basic structural elements of it are a generating function, a generalized
density and a generalized temperature. One of the axioms of this theory is a
generalized Einstein equation which determines the generating function
directly. It is ... | [
{
"created": "Fri, 2 Mar 2007 15:03:56 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Schröter",
"Joachim",
""
]
] | The aim of this paper (Part III) is formulating GR as a scalar field theory. The basic structural elements of it are a generating function, a generalized density and a generalized temperature. One of the axioms of this theory is a generalized Einstein equation which determines the generating function directly. It is sh... |
gr-qc/0608015 | Filimonova Irina V | S.S.Gershtein, A.A.Logunov, M.A.Mestvirishvili | On gravitational flow in the Relativistic Theory of Gravitation | 6 pages | Dokl.Phys.51:595-597,2006 | 10.1134/S102833580611005X | null | gr-qc | null | A definition of the gravitational flow and a short description of the recipe
of its calculation are presented.
| [
{
"created": "Thu, 3 Aug 2006 09:53:38 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Gershtein",
"S. S.",
""
],
[
"Logunov",
"A. A.",
""
],
[
"Mestvirishvili",
"M. A.",
""
]
] | A definition of the gravitational flow and a short description of the recipe of its calculation are presented. |
gr-qc/9511025 | null | E.N. Glass | Angular Momentum and Killing Potentials | Revtex, 16 pages, to appear in J. Math. Phys | J.Math.Phys. 37 (1996) 421-429 | 10.1063/1.531398 | null | gr-qc | null | When the Penrose-Goldberg (PG) superpotential is used to compute the angular
momentum of an axial symmetry, the Killing potential $Q_{(\varphi )}^{\mu\nu}$
for that symmetry is needed. Killing potentials used in the PG superpotential
must satisfy Penrose's equation. It is proved for the Schwarzschild and Kerr
solutio... | [
{
"created": "Tue, 7 Nov 1995 09:45:18 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Glass",
"E. N.",
""
]
] | When the Penrose-Goldberg (PG) superpotential is used to compute the angular momentum of an axial symmetry, the Killing potential $Q_{(\varphi )}^{\mu\nu}$ for that symmetry is needed. Killing potentials used in the PG superpotential must satisfy Penrose's equation. It is proved for the Schwarzschild and Kerr solutions... |
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