id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1308.0548 | Francisco Navarro-Lerida | Jose Luis Blazquez-Salcedo, Jutta Kunz, Francisco Navarro-Lerida, and
Eugen Radu | Sequences of extremal radially excited rotating black holes | 5 pages, 6 figures | Phys. Rev. Lett. 112, 011101 (2014) | 10.1103/PhysRevLett.112.011101 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Einstein-Maxwell-Chern-Simons theory the extremal Reissner-Nordstr\"om
solution is no longer the single extremal solution with vanishing angular
momentum, when the Chern-Simons coupling constant reaches a critical value.
Instead a whole sequence of rotating extremal J=0 solutions arises, labeled by
the node number... | [
{
"created": "Fri, 2 Aug 2013 15:59:57 GMT",
"version": "v1"
}
] | 2014-09-02 | [
[
"Blazquez-Salcedo",
"Jose Luis",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Navarro-Lerida",
"Francisco",
""
],
[
"Radu",
"Eugen",
""
]
] | In Einstein-Maxwell-Chern-Simons theory the extremal Reissner-Nordstr\"om solution is no longer the single extremal solution with vanishing angular momentum, when the Chern-Simons coupling constant reaches a critical value. Instead a whole sequence of rotating extremal J=0 solutions arises, labeled by the node number o... |
1406.0704 | Hamid Reza Sepangi | F. Kheyri, M. Khodadi and H. R. Sepangi | Horava-Lifshitz cosmology, entropic interpretation and quark-hadron
phase transition | 17 pages, 7 figures. arXiv admin note: text overlap with
arXiv:0710.0354 by other authors | Annals of Physics 332 (2012) 75 | 10.1016/j.aop.2013.01.014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the assumptions of the standard model of cosmology, a phase
transition associated with chiral symmetry breaking after the electroweak
transition has occurred at approximately $10\mu$ seconds after the Big Bang to
convert a plasma of free quarks and gluons into hadrons. We consider such a
phase transition in ... | [
{
"created": "Tue, 3 Jun 2014 13:27:07 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Jul 2014 06:46:00 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Kheyri",
"F.",
""
],
[
"Khodadi",
"M.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | Based on the assumptions of the standard model of cosmology, a phase transition associated with chiral symmetry breaking after the electroweak transition has occurred at approximately $10\mu$ seconds after the Big Bang to convert a plasma of free quarks and gluons into hadrons. We consider such a phase transition in th... |
1108.4539 | Joanna Ja{\l}mu\.zna | Joanna Ja{\l}mu\.zna, Andrzej Rostworowski, Piotr Bizo\'n | A comment on AdS collapse of a scalar field in higher dimensions | 3 pages, 2 figures | Phys. Rev. D 84, 085021 (2011) | 10.1103/PhysRevD.84.085021 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We point out that the weakly turbulent instability of anti-de Sitter space,
recently found in arXiv:1104.3702 for four dimensional spherically symmetric
Einstein-massless-scalar field equations with negative cosmological constant,
is present in all dimensions $d+1$ for $d\geq 3$, contrary to a claim made in
arXiv:110... | [
{
"created": "Tue, 23 Aug 2011 09:53:58 GMT",
"version": "v1"
}
] | 2016-08-14 | [
[
"Jałmużna",
"Joanna",
""
],
[
"Rostworowski",
"Andrzej",
""
],
[
"Bizoń",
"Piotr",
""
]
] | We point out that the weakly turbulent instability of anti-de Sitter space, recently found in arXiv:1104.3702 for four dimensional spherically symmetric Einstein-massless-scalar field equations with negative cosmological constant, is present in all dimensions $d+1$ for $d\geq 3$, contrary to a claim made in arXiv:1106.... |
2404.04872 | Kayoomars Karami | Iraj Safaei and Kayoomars Karami | Observational constraints on degeneracy of non-canonical inflation
driven by quartic potential | 25 pages, 6 figures, 3 tables | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Here, the quartic inflationary potential $V(\phi)=\frac{\lambda}{4}\phi^4$ in
non-canonical framework with a power-law Lagrangian is investigated. We
demonstrate that the predictions of this potential in non-canonical framework
align with the observational data of Planck 2018. We determine how the
predictions of the ... | [
{
"created": "Sun, 7 Apr 2024 08:36:18 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Jul 2024 08:04:11 GMT",
"version": "v2"
}
] | 2024-07-02 | [
[
"Safaei",
"Iraj",
""
],
[
"Karami",
"Kayoomars",
""
]
] | Here, the quartic inflationary potential $V(\phi)=\frac{\lambda}{4}\phi^4$ in non-canonical framework with a power-law Lagrangian is investigated. We demonstrate that the predictions of this potential in non-canonical framework align with the observational data of Planck 2018. We determine how the predictions of the mo... |
2209.14321 | Guillaume Dideron | Guillaume Dideron, Suvodip Mukherjee and Luis Lehner | SCoRe: A New Framework to Study Unmodeled Physics from Gravitational
Wave Data | 18 pages, 9 figures | null | 10.1103/PhysRevD.107.104023 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A confident discovery of physics beyond what has been consistently modeled
from gravitational wave (GW) data requires a technique that can distinguish
between noise artifacts and unmodeled signatures while also shedding light on
the underlying physics. We propose a new data analysis method, \texttt{SCoRe}
(Structured... | [
{
"created": "Wed, 28 Sep 2022 18:00:11 GMT",
"version": "v1"
},
{
"created": "Tue, 2 May 2023 17:03:58 GMT",
"version": "v2"
}
] | 2023-05-24 | [
[
"Dideron",
"Guillaume",
""
],
[
"Mukherjee",
"Suvodip",
""
],
[
"Lehner",
"Luis",
""
]
] | A confident discovery of physics beyond what has been consistently modeled from gravitational wave (GW) data requires a technique that can distinguish between noise artifacts and unmodeled signatures while also shedding light on the underlying physics. We propose a new data analysis method, \texttt{SCoRe} (Structured C... |
1503.06636 | Wlodek Klu\'zniak | Mateusz Wi\'sniewicz, Dorota Gondek-Rosi\'nska, W{\l}odzimierz
Klu\'zniak and Nikolaos Stergioulas | Unusual behavior of epicyclic frequencies around rapidly rotating
compact stars | 6 pages, 2 figures (4 panels). To appear in Proceedings of RAGtime
14/15/16, S. Hledik and Z. Stuchlik, eds | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report on numerical calculations of orbital and epicyclic frequencies in
nearly circular orbits around rotating neutron stars and strange quark stars.
The FPS equation of state was used to describe the neutron star structure while
the MIT bag model was used to model the equation of state of strange quark
stars. Th... | [
{
"created": "Mon, 23 Mar 2015 13:38:12 GMT",
"version": "v1"
}
] | 2015-03-24 | [
[
"Wiśniewicz",
"Mateusz",
""
],
[
"Gondek-Rosińska",
"Dorota",
""
],
[
"Kluźniak",
"Włodzimierz",
""
],
[
"Stergioulas",
"Nikolaos",
""
]
] | We report on numerical calculations of orbital and epicyclic frequencies in nearly circular orbits around rotating neutron stars and strange quark stars. The FPS equation of state was used to describe the neutron star structure while the MIT bag model was used to model the equation of state of strange quark stars. The ... |
0712.2396 | Fernando de Felice | D. Bini, F. de Felice and A. Geralico | Strains and Jets in Black Hole Fields | To appear in the Proceedings of the Spanish Relativity Meeting 2007
held in Tenerife (Spain) 3 Figures | null | 10.1051/eas:0830011 | null | gr-qc | null | We study the behaviour of an initially spherical bunch of particles emitted
along trajectories parallel to the symmetry axis of a Kerr black hole. We show
that, under suitable conditions, curvature and inertial strains compete to
generate jet-like structures.
| [
{
"created": "Fri, 14 Dec 2007 17:16:05 GMT",
"version": "v1"
}
] | 2009-11-13 | [
[
"Bini",
"D.",
""
],
[
"de Felice",
"F.",
""
],
[
"Geralico",
"A.",
""
]
] | We study the behaviour of an initially spherical bunch of particles emitted along trajectories parallel to the symmetry axis of a Kerr black hole. We show that, under suitable conditions, curvature and inertial strains compete to generate jet-like structures. |
1712.02038 | Igor Loutsenko | Igor Loutsenko | On the Role of Caustic in Solar Gravitational Lens Imaging | 33pages, 12 figures | Progress of Theoretical and Experimental Physics, Volume 2018,
Issue 12, 1 December 2018, 123A02 | 10.1093/ptep/pty119 | null | gr-qc astro-ph.EP astro-ph.IM physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider scattering of electromagnetic waves from a distant point source
by the gravitational field of the sun, taking the field oblateness due to the
quadrupole moment of the sun into account. Effects of the field oblateness can
play an important role in the high resolution solar gravitational lens imaging
in the... | [
{
"created": "Wed, 6 Dec 2017 04:39:51 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Dec 2017 00:39:50 GMT",
"version": "v2"
},
{
"created": "Mon, 12 Feb 2018 14:00:33 GMT",
"version": "v3"
},
{
"created": "Sun, 20 May 2018 13:35:52 GMT",
"version": "v4"
},
{
"cr... | 2019-02-26 | [
[
"Loutsenko",
"Igor",
""
]
] | We consider scattering of electromagnetic waves from a distant point source by the gravitational field of the sun, taking the field oblateness due to the quadrupole moment of the sun into account. Effects of the field oblateness can play an important role in the high resolution solar gravitational lens imaging in the s... |
1412.2045 | Ruxandra Bondarescu | Ruxandra Bondarescu, Andreas Sch\"arer, Philippe Jetzer, Raymond
Ang\'elil, Prasenjit Saha, and Andrew Lundgren | Testing General Relativity and Alternative Theories of Gravity with
Space-based Atomic Clocks and Atom Interferometers | 12 pages, 4 figures, 2 tables. Proceeding for ICNFP 2014 | EPJ Web of Conferences 95, 02002 (2015) | null | null | gr-qc astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The successful miniaturisation of extremely accurate atomic clocks and atom
interferometers invites prospects for satellite missions to perform precision
experiments. We discuss the effects predicted by general relativity and
alternative theories of gravity that can be detected by a clock, which orbits
the Earth. Our... | [
{
"created": "Fri, 5 Dec 2014 16:09:03 GMT",
"version": "v1"
}
] | 2015-06-10 | [
[
"Bondarescu",
"Ruxandra",
""
],
[
"Schärer",
"Andreas",
""
],
[
"Jetzer",
"Philippe",
""
],
[
"Angélil",
"Raymond",
""
],
[
"Saha",
"Prasenjit",
""
],
[
"Lundgren",
"Andrew",
""
]
] | The successful miniaturisation of extremely accurate atomic clocks and atom interferometers invites prospects for satellite missions to perform precision experiments. We discuss the effects predicted by general relativity and alternative theories of gravity that can be detected by a clock, which orbits the Earth. Our e... |
0704.1638 | Yury F. Pirogov | Yu. F. Pirogov | Accelerated expansion of the Universe filled up with the scalar
gravitons | 5 pages | Phys.Atom.Nucl.71:728-731,2008 | 10.1134/S1063778808040145 | null | gr-qc astro-ph hep-ph | null | The concept of the scalar graviton as the source of the dark matter and dark
energy of the gravitaional origin is applied to study the evolution of the
isotropic homogeneous Universe. A realistic self-consistent solution to the
modified pure gravity equations, which correctly describes the accelerated
expansion of th... | [
{
"created": "Thu, 12 Apr 2007 18:30:02 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Pirogov",
"Yu. F.",
""
]
] | The concept of the scalar graviton as the source of the dark matter and dark energy of the gravitaional origin is applied to study the evolution of the isotropic homogeneous Universe. A realistic self-consistent solution to the modified pure gravity equations, which correctly describes the accelerated expansion of the ... |
1203.4842 | Felipe Guzman Cervantes | Frank Steier, Felipe Guzm\'an Cervantes, Antonio F. Garc\'ia Mar\'in,
Domenico Gerardi, Gerhard Heinzel and Karsten Danzmann | The end-to-end testbed of the Optical Metrology System on-board LISA
Pathfinder | null | Classical and Quantum Gravity 26 094010 (2009) | 10.1088/0264-9381/26/9/094010 | null | gr-qc astro-ph.IM physics.ins-det physics.optics physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | LISA Pathfinder is a technology demonstration mission for the Laser
Interferometer Space Antenna (LISA). The main experiment on-board LISA
Pathfinder is the so-called LISA Technology Package (LTP) which has the aim to
measure the differential acceleration between two free-falling test masses with
an accuracy of 3x10^... | [
{
"created": "Wed, 21 Mar 2012 21:34:58 GMT",
"version": "v1"
}
] | 2012-03-23 | [
[
"Steier",
"Frank",
""
],
[
"Cervantes",
"Felipe Guzmán",
""
],
[
"Marín",
"Antonio F. García",
""
],
[
"Gerardi",
"Domenico",
""
],
[
"Heinzel",
"Gerhard",
""
],
[
"Danzmann",
"Karsten",
""
]
] | LISA Pathfinder is a technology demonstration mission for the Laser Interferometer Space Antenna (LISA). The main experiment on-board LISA Pathfinder is the so-called LISA Technology Package (LTP) which has the aim to measure the differential acceleration between two free-falling test masses with an accuracy of 3x10^(-... |
gr-qc/0005049 | Vitorio A. De Lorenci | V. A. De Lorenci, R. Klippert, M. Novello and J. M. Salim | Light propagation in non linear electrodynamics | 3 pages, latex, no figures (to appear in Phys. Lett. B) | Phys.Lett. B482 (2000) 134-140 | 10.1016/S0370-2693(00)00522-0 | null | gr-qc | null | Working on the approximation of low frequency, we present the light cone
conditions for a class of theories constructed with the two gauge invariants of
the Maxwell field without making use of average over polarization states.
Different polarization states are thus identified describing birefringence
phenomena. We ma... | [
{
"created": "Sat, 13 May 2000 19:43:17 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"De Lorenci",
"V. A.",
""
],
[
"Klippert",
"R.",
""
],
[
"Novello",
"M.",
""
],
[
"Salim",
"J. M.",
""
]
] | Working on the approximation of low frequency, we present the light cone conditions for a class of theories constructed with the two gauge invariants of the Maxwell field without making use of average over polarization states. Different polarization states are thus identified describing birefringence phenomena. We make... |
1512.02331 | Stephen McCormick | Stephen McCormick | The Hilbert manifold of asymptotically flat metric extensions | 24 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In [Comm. Anal. Geom., 13(5):845-885, 2005.], Bartnik described the phase
space for the Einstein equations, modelled on weighted Sobolev spaces with
local regularity $(g,\pi)\in H^2\times H^1$. In particular, it was established
that the space of solutions to the contraints form a Hilbert submanifold of
this phase spa... | [
{
"created": "Tue, 8 Dec 2015 05:23:59 GMT",
"version": "v1"
}
] | 2015-12-09 | [
[
"McCormick",
"Stephen",
""
]
] | In [Comm. Anal. Geom., 13(5):845-885, 2005.], Bartnik described the phase space for the Einstein equations, modelled on weighted Sobolev spaces with local regularity $(g,\pi)\in H^2\times H^1$. In particular, it was established that the space of solutions to the contraints form a Hilbert submanifold of this phase space... |
1710.07906 | Kaushik Bhattacharya | Kaushik Bhattacharya, Saikat Chakraborty | Nonlinear anisotropy growth in Bianchi-I spacetime in metric $f(R)$
cosmology | The article is made a bit shorter. Contains 24 pages and 5 figures.
To be published in PRD | Phys. Rev. D 99, 023520 (2019) | 10.1103/PhysRevD.99.023520 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/publicdomain/zero/1.0/ | The present work is related to anisotropic cosmological evolution in metric
$f(R)$ theory of gravity. The initial part of the paper develops the general
cosmological dynamics of homogeneous anisotropic Bianchi-I spacetime in $f(R)$
cosmology. The anisotropic spacetime is pervaded by a barotropic fluid which
has isotr... | [
{
"created": "Sun, 22 Oct 2017 07:59:50 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Oct 2017 16:57:58 GMT",
"version": "v2"
},
{
"created": "Mon, 28 May 2018 14:23:57 GMT",
"version": "v3"
},
{
"created": "Tue, 8 Jan 2019 04:51:33 GMT",
"version": "v4"
}
] | 2019-01-23 | [
[
"Bhattacharya",
"Kaushik",
""
],
[
"Chakraborty",
"Saikat",
""
]
] | The present work is related to anisotropic cosmological evolution in metric $f(R)$ theory of gravity. The initial part of the paper develops the general cosmological dynamics of homogeneous anisotropic Bianchi-I spacetime in $f(R)$ cosmology. The anisotropic spacetime is pervaded by a barotropic fluid which has isotrop... |
2201.06138 | Ran Li | Ran Li, Jin Wang | Kinetics of Hawking-Page phase transition with the non-Markovian effects | null | null | 10.1007/JHEP05(2022)128 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the free energy landscape description of Hawking-Page phase
transition, the transition process from the Schwarzschild-anti-de Sitter black
hole to the thermal anti-de Sitter space are considered to be stochastic under
the thermal fluctuations. If the correlation time of the effective thermal bath
is comparab... | [
{
"created": "Sun, 16 Jan 2022 21:27:16 GMT",
"version": "v1"
}
] | 2022-06-08 | [
[
"Li",
"Ran",
""
],
[
"Wang",
"Jin",
""
]
] | Based on the free energy landscape description of Hawking-Page phase transition, the transition process from the Schwarzschild-anti-de Sitter black hole to the thermal anti-de Sitter space are considered to be stochastic under the thermal fluctuations. If the correlation time of the effective thermal bath is comparable... |
0802.1031 | Gabriel Bela Nagy | M. Holst, G. Nagy, G. Tsogtgerel | Far-from-constant mean curvature solutions of Einstein's constraint
equations with positive Yamabe metrics | 4 pages, no figures, accepted for publication in Physical Review
Letters. (Abstract shortenned and other minor changes reflecting v4 version
of arXiv:0712.0798) | Phys.Rev.Lett.100:161101,2008 | 10.1103/PhysRevLett.100.161101 | null | gr-qc math.AP | null | In this article we develop some new existence results for the Einstein
constraint equations using the Lichnerowicz-York conformal rescaling method.
The mean extrinsic curvature is taken to be an arbitrary smooth function
without restrictions on the size of its spatial derivatives, so that it can be
arbitrarily far fr... | [
{
"created": "Thu, 7 Feb 2008 18:10:00 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Feb 2008 19:29:49 GMT",
"version": "v2"
},
{
"created": "Sat, 12 Apr 2008 09:10:13 GMT",
"version": "v3"
}
] | 2010-01-13 | [
[
"Holst",
"M.",
""
],
[
"Nagy",
"G.",
""
],
[
"Tsogtgerel",
"G.",
""
]
] | In this article we develop some new existence results for the Einstein constraint equations using the Lichnerowicz-York conformal rescaling method. The mean extrinsic curvature is taken to be an arbitrary smooth function without restrictions on the size of its spatial derivatives, so that it can be arbitrarily far from... |
1812.04589 | Marek Nowakowski | Sergio Bravo Medina, Marek Nowakowski, Davide Batic | Einstein-Cartan Cosmologies | 41 pages, 21 figures | Annals of Physics 400 (2019) 64-108 | 10.1016/j.aop.2018.11.002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cosmologies based on General Relativity encompassing an anti-symmetric
connection (torsion) can display nice desirable features as the absence of the
initial singularity and the possibility of inflation in the early stage of the
universe. After briefly reviewing the standard approach to the cosmology with
torsion, we... | [
{
"created": "Tue, 11 Dec 2018 18:17:14 GMT",
"version": "v1"
}
] | 2018-12-12 | [
[
"Medina",
"Sergio Bravo",
""
],
[
"Nowakowski",
"Marek",
""
],
[
"Batic",
"Davide",
""
]
] | Cosmologies based on General Relativity encompassing an anti-symmetric connection (torsion) can display nice desirable features as the absence of the initial singularity and the possibility of inflation in the early stage of the universe. After briefly reviewing the standard approach to the cosmology with torsion, we g... |
1910.02801 | Fethi M. Ramazanoglu | Fethi M. Ramazano\u{g}lu, K{\i}van\c{c} \.I. \"Unl\"ut\"urk | Generalized disformal coupling leads to spontaneous tensorization | 9 pages, to appear in Phys. Rev. D | Phys. Rev. D 100, 084026 (2019) | 10.1103/PhysRevD.100.084026 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that gravity theories involving disformally transformed metrics in
their matter coupling lead to spontaneous growth of various fields in a similar
fashion to the spontaneous scalarization scenario in scalar-tensor theories.
Scalar-dependent disformal transformations have been investigated in this
context, and... | [
{
"created": "Mon, 7 Oct 2019 14:00:59 GMT",
"version": "v1"
}
] | 2019-10-15 | [
[
"Ramazanoğlu",
"Fethi M.",
""
],
[
"Ünlütürk",
"Kıvanç İ.",
""
]
] | We show that gravity theories involving disformally transformed metrics in their matter coupling lead to spontaneous growth of various fields in a similar fashion to the spontaneous scalarization scenario in scalar-tensor theories. Scalar-dependent disformal transformations have been investigated in this context, and o... |
1811.02960 | Diego S\'aez-Chill\'on G\'omez | Emilio Elizalde, Sergei D. Odintsov, Tanmoy Paul and Diego
Saez-Chillon Gomez | The inflationary universe in F(R) gravity with antisymmetric tensor
fields and their suppression during the universe evolution | 36 pages, 13 figures, version to be published in PRD | Phys. Rev. D 99, 063506 (2019) | 10.1103/PhysRevD.99.063506 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The intriguing question, why the present scale of the universe is free from
any perceptible footprints of rank-2 antisymmetric tensor fields? (generally
known as Kalb-Ramond fields) is addressed. A quite natural explanation of this
issue is given from the angle of higher-curvature gravity, both in four- and in
five-d... | [
{
"created": "Wed, 7 Nov 2018 16:20:36 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Nov 2018 19:16:16 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Feb 2019 13:42:24 GMT",
"version": "v3"
}
] | 2019-03-27 | [
[
"Elizalde",
"Emilio",
""
],
[
"Odintsov",
"Sergei D.",
""
],
[
"Paul",
"Tanmoy",
""
],
[
"Gomez",
"Diego Saez-Chillon",
""
]
] | The intriguing question, why the present scale of the universe is free from any perceptible footprints of rank-2 antisymmetric tensor fields? (generally known as Kalb-Ramond fields) is addressed. A quite natural explanation of this issue is given from the angle of higher-curvature gravity, both in four- and in five-dim... |
1012.3144 | Leo Stein | Leo C. Stein and Nicolas Yunes | Effective Gravitational Wave Stress-energy Tensor in Alternative
Theories of Gravity | 19 pages. v3: Clarified averaging properties and gauge choice.
Version accepted to PRD | Phys.Rev.D83:064038,2011 | 10.1103/PhysRevD.83.064038 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The inspiral of binary systems in vacuum is controlled by the stress-energy
of gravitational radiation and any other propagating degrees of freedom. For
gravitational waves, the dominant contribution is characterized by an effective
stress-energy tensor at future null infinity. We employ perturbation theory and
the s... | [
{
"created": "Tue, 14 Dec 2010 19:40:58 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Dec 2010 18:30:11 GMT",
"version": "v2"
},
{
"created": "Fri, 21 Jan 2011 16:52:17 GMT",
"version": "v3"
}
] | 2011-05-10 | [
[
"Stein",
"Leo C.",
""
],
[
"Yunes",
"Nicolas",
""
]
] | The inspiral of binary systems in vacuum is controlled by the stress-energy of gravitational radiation and any other propagating degrees of freedom. For gravitational waves, the dominant contribution is characterized by an effective stress-energy tensor at future null infinity. We employ perturbation theory and the sho... |
1907.00715 | Jiawei Hu | Shijing Cheng, Jiawei Hu, Hongwei Yu | Spontaneous excitation of an accelerated atom coupled with quantum
fluctuations of spacetime | 15 pages, 1 figure, published version | Phys. Rev. D 100, 025010 (2019) | 10.1103/PhysRevD.100.025010 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A direct consequence of quantization of gravity would be quantum
gravitational vacuum fluctuations which induce quadrupole moments in
gravitationally polarizable atoms. In this paper, we study the spontaneous
excitation of a gravitationally polarizable atom with a uniform acceleration
$a$ in interaction with a bath o... | [
{
"created": "Mon, 1 Jul 2019 12:34:47 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Jul 2019 13:05:09 GMT",
"version": "v2"
}
] | 2019-07-25 | [
[
"Cheng",
"Shijing",
""
],
[
"Hu",
"Jiawei",
""
],
[
"Yu",
"Hongwei",
""
]
] | A direct consequence of quantization of gravity would be quantum gravitational vacuum fluctuations which induce quadrupole moments in gravitationally polarizable atoms. In this paper, we study the spontaneous excitation of a gravitationally polarizable atom with a uniform acceleration $a$ in interaction with a bath of ... |
gr-qc/0605018 | Carlos F. Sopuerta | Carlos F. Sopuerta (1), Ulrich Sperhake (1 and 2), and Pablo Laguna
(1) ((1) CGWP, Penn State, (2) TPI, Jena) | Hydro-without-Hydro Framework for Simulations of Black Hole-Neutron Star
Binaries | 16 pages, 7 figures. To appear in the Classical and Quantum Gravity
special issue on Numerical Relativity | Class.Quant.Grav. 23 (2006) S579-S598 | 10.1088/0264-9381/23/16/S15 | null | gr-qc astro-ph | null | We introduce a computational framework which avoids solving explicitly
hydrodynamic equations and is suitable to study the pre-merger evolution of
black hole-neutron star binary systems. The essence of the method consists of
constructing a neutron star model with a black hole companion and freezing the
internal degre... | [
{
"created": "Tue, 2 May 2006 16:13:51 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Sopuerta",
"Carlos F.",
"",
"CGWP, Penn State"
],
[
"Sperhake",
"Ulrich",
"",
"1 and 2"
],
[
"Laguna",
"Pablo",
"",
"CGWP, Penn State"
]
] | We introduce a computational framework which avoids solving explicitly hydrodynamic equations and is suitable to study the pre-merger evolution of black hole-neutron star binary systems. The essence of the method consists of constructing a neutron star model with a black hole companion and freezing the internal degrees... |
0710.1291 | Valerio Faraoni | Valerio Faraoni (Bishop's University) | A viability criterion for modified gravity with an extra force | 4 latex pages, to appear in Phys. Rev. D | Phys.Rev.D76:127501,2007 | 10.1103/PhysRevD.76.127501 | null | gr-qc | null | A recently proposed theory of modified gravity with an explicit ``anomalous''
coupling of the Ricci curvature to matter is discussed, and an inequality is
derived which expresses a necessary and sufficient condition to avoid the
notorius Dolgov-Kawasaki instability.
| [
{
"created": "Fri, 5 Oct 2007 18:48:39 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Faraoni",
"Valerio",
"",
"Bishop's University"
]
] | A recently proposed theory of modified gravity with an explicit ``anomalous'' coupling of the Ricci curvature to matter is discussed, and an inequality is derived which expresses a necessary and sufficient condition to avoid the notorius Dolgov-Kawasaki instability. |
1605.07193 | Sam Dolan Dr | Sam R Dolan and Jake O Shipley | Stable photon orbits in stationary axisymmetric electrovacuum spacetimes | 14 pages, 5 figures. Expanded version with two new figures and one
appendix | Phys. Rev. D 94, 044038 (2016) | 10.1103/PhysRevD.94.044038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the existence and phenomenology of stable photon orbits (SPOs)
in stationary axisymmetric electrovacuum spacetimes in four dimensions. First,
we review the classification of equatorial circular photon orbits on
Kerr-Newman spacetimes in the charge-spin plane. Second, using a Hamiltonian
formulation, we... | [
{
"created": "Mon, 23 May 2016 20:00:18 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jun 2016 14:23:08 GMT",
"version": "v2"
}
] | 2016-08-23 | [
[
"Dolan",
"Sam R",
""
],
[
"Shipley",
"Jake O",
""
]
] | We investigate the existence and phenomenology of stable photon orbits (SPOs) in stationary axisymmetric electrovacuum spacetimes in four dimensions. First, we review the classification of equatorial circular photon orbits on Kerr-Newman spacetimes in the charge-spin plane. Second, using a Hamiltonian formulation, we s... |
gr-qc/0610088 | Andrew Lundgren | Andrew P. Lundgren, Bjoern S. Schmekel, James W. York Jr | Self-Renormalization of the Classical Quasilocal Energy | 7 pages, 4 figures | Phys.Rev.D75:084026,2007 | 10.1103/PhysRevD.75.084026 | null | gr-qc hep-th | null | Pointlike objects cause many of the divergences that afflict physical
theories. For instance, the gravitational binding energy of a point particle in
Newtonian mechanics is infinite. In general relativity, the analog of a point
particle is a black hole and the notion of binding energy must be replaced by
quasilocal e... | [
{
"created": "Wed, 18 Oct 2006 03:26:24 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Lundgren",
"Andrew P.",
""
],
[
"Schmekel",
"Bjoern S.",
""
],
[
"York",
"James W.",
"Jr"
]
] | Pointlike objects cause many of the divergences that afflict physical theories. For instance, the gravitational binding energy of a point particle in Newtonian mechanics is infinite. In general relativity, the analog of a point particle is a black hole and the notion of binding energy must be replaced by quasilocal ene... |
1001.4617 | Luciano Vanzo | Roberto Di Criscienzo, Luciano Vanzo and Sergio Zerbini | Applications of the Tunneling Method to Particle Decay and Radiation
from Naked Singularities | LaTex document, 14 pages, two figures | JHEP 1005:092,2010 | 10.1007/JHEP05(2010)092 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Following recent literature on dS instability in presence of interactions, we
study the decay of massive particles in general FRW models and the emission
from naked singularities either associated with 4D charged black holes or with
2D shock waves, by means of the Hamilton--Jacobi tunneling method. It is shown
that t... | [
{
"created": "Tue, 26 Jan 2010 09:38:11 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Di Criscienzo",
"Roberto",
""
],
[
"Vanzo",
"Luciano",
""
],
[
"Zerbini",
"Sergio",
""
]
] | Following recent literature on dS instability in presence of interactions, we study the decay of massive particles in general FRW models and the emission from naked singularities either associated with 4D charged black holes or with 2D shock waves, by means of the Hamilton--Jacobi tunneling method. It is shown that the... |
gr-qc/0306010 | Novak | Jerome Novak and Emmanuel Marcq | Gyromagnetic ratio of rapidly rotating compact stars in general
relativity | 11 pages, 6 figures, accepted for publication in Classical and
Quantum Gravity | Class.Quant.Grav. 20 (2003) 3051-3060 | 10.1088/0264-9381/20/14/307 | null | gr-qc | null | We numerically calculate equilibrium configurations of uniformly rotating and
charged neutron stars, in the case of insulating material and neglecting the
electromagnetic forces acting on the equilibrium of the fluid. This allows us
to study the behaviour of the gyromagnetic ratio for those objects, when
varying rota... | [
{
"created": "Tue, 3 Jun 2003 08:24:31 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Novak",
"Jerome",
""
],
[
"Marcq",
"Emmanuel",
""
]
] | We numerically calculate equilibrium configurations of uniformly rotating and charged neutron stars, in the case of insulating material and neglecting the electromagnetic forces acting on the equilibrium of the fluid. This allows us to study the behaviour of the gyromagnetic ratio for those objects, when varying rotati... |
2306.09943 | Dipankar Barman | Dipankar Barman, Bibhas Ranjan Majhi | Are multiple reflecting boundaries capable of enhancing entanglement
harvesting? | Minor corrections done, published in Phys. Rev. D | Phys.Rev.D 108 (2023) 8, 085007 | 10.1103/PhysRevD.108.085007 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum entanglement harvesting in the relativistic setup attracted a lot of
attention in recent times. Acquiring more entanglement within two qubits may be
very desirable to establish fruitful communication between them. On the other
hand use of reflecting boundaries in a spacetime has close resemblance to the
cavit... | [
{
"created": "Fri, 16 Jun 2023 16:25:12 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Oct 2023 10:56:12 GMT",
"version": "v2"
}
] | 2023-10-17 | [
[
"Barman",
"Dipankar",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
]
] | Quantum entanglement harvesting in the relativistic setup attracted a lot of attention in recent times. Acquiring more entanglement within two qubits may be very desirable to establish fruitful communication between them. On the other hand use of reflecting boundaries in a spacetime has close resemblance to the cavity ... |
gr-qc/0106041 | Dr. Bikash Chandra Paul | B. C. Paul (North Bengal University) | Probability for Primordial Black Holes in Higher Dimensional Universe | 13 pages, no figure, LaTex | Phys.Rev.D61:024032,2000 | 10.1103/PhysRevD.61.024032 | null | gr-qc | null | We investigate higher dimensional cosmological models in the semiclassical
approximation with Hartle-Hawking Boundary conditions, assuming a gravitational
action which is described by the scalar curvature with a cosmological constant.
In the framework the probability for quantum creation of an inflationary
universe w... | [
{
"created": "Wed, 13 Jun 2001 04:54:13 GMT",
"version": "v1"
}
] | 2010-05-28 | [
[
"Paul",
"B. C.",
"",
"North Bengal University"
]
] | We investigate higher dimensional cosmological models in the semiclassical approximation with Hartle-Hawking Boundary conditions, assuming a gravitational action which is described by the scalar curvature with a cosmological constant. In the framework the probability for quantum creation of an inflationary universe wit... |
0905.2170 | Leonardo Modesto | Francesco Caravelli, Leonardo Modesto | Fractal Dimension in 3d Spin-Foams | 5 pages, 9 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we perform the calculation of the spectral dimension of the
space-time in 3d quantum gravity using the dynamics of the Ponzano-Regge vertex
(PR) and its quantum group generalization (Turaev-Viro model (TV)). We realize
this considering a very simple decomposition of the 3d space-time and
introducing a b... | [
{
"created": "Wed, 13 May 2009 19:10:50 GMT",
"version": "v1"
}
] | 2009-05-19 | [
[
"Caravelli",
"Francesco",
""
],
[
"Modesto",
"Leonardo",
""
]
] | In this paper we perform the calculation of the spectral dimension of the space-time in 3d quantum gravity using the dynamics of the Ponzano-Regge vertex (PR) and its quantum group generalization (Turaev-Viro model (TV)). We realize this considering a very simple decomposition of the 3d space-time and introducing a bou... |
2305.09725 | Abhishek Hegade K R | Abhishek Hegade K R, Justin L. Ripley and Nicol\'as Yunes | The non-relativistic limit of first-order relativistic viscous fluids | v2-matches published version in PRD | null | 10.1103/PhysRevD.107.124029 | null | gr-qc hep-th math-ph math.MP nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Out-of-equilibrium effects may play an important role in the dynamics of
neutron star mergers and in heavy-ion collisions. Bemfica, Disconzi, Noronha
and Kovtun (BDNK) recently derived a causal, locally well-posed, and modally
stable relativistic fluid model that incorporates the effects of viscosity and
heat diffusi... | [
{
"created": "Tue, 16 May 2023 18:01:03 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Jun 2023 23:10:46 GMT",
"version": "v2"
}
] | 2023-07-05 | [
[
"R",
"Abhishek Hegade K",
""
],
[
"Ripley",
"Justin L.",
""
],
[
"Yunes",
"Nicolás",
""
]
] | Out-of-equilibrium effects may play an important role in the dynamics of neutron star mergers and in heavy-ion collisions. Bemfica, Disconzi, Noronha and Kovtun (BDNK) recently derived a causal, locally well-posed, and modally stable relativistic fluid model that incorporates the effects of viscosity and heat diffusion... |
1505.07272 | Sumanta Chakraborty | Sumanta Chakraborty | Lanczos-Lovelock gravity from a thermodynamic perspective | Revised Version, Published, 39 pages, no figures | JHEP 1508, 029 (2015) | 10.1007/JHEP08(2015)029 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The deep connection between gravitational dynamics and horizon thermodynamics
leads to several intriguing features both in general relativity and in
Lanczos-Lovelock theories of gravity. Recently in arXiv:1312.3253 several
additional results strengthening the above connection have been established
within the framewor... | [
{
"created": "Tue, 26 May 2015 04:30:06 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Aug 2015 09:48:14 GMT",
"version": "v2"
}
] | 2015-08-18 | [
[
"Chakraborty",
"Sumanta",
""
]
] | The deep connection between gravitational dynamics and horizon thermodynamics leads to several intriguing features both in general relativity and in Lanczos-Lovelock theories of gravity. Recently in arXiv:1312.3253 several additional results strengthening the above connection have been established within the framework ... |
2107.01050 | Sujay Kr. Biswas | Goutam Mandal, Sujay Kr. Biswas, Subhajit Saha and Abdulla Al Mamon | Dynamical system analysis of logotropic dark fluid with a power law in
the rest-mass energy density | 13 pages, 4 captioned figures. Version accepted for publication in
Physics of the Dark Universe | null | 10.1016/j.dark.2022.100970 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a spatially flat FLRW universe. We assume that it is filled with
dark energy in the form of logotropic dark fluid coupled with dark matter in
the form of a perfect fluid having a barotropic equation of state. We employ
dynamical system tools to obtain a complete qualitative idea of the evolution
of such a... | [
{
"created": "Thu, 1 Jul 2021 14:44:54 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Feb 2022 13:43:51 GMT",
"version": "v2"
}
] | 2022-02-03 | [
[
"Mandal",
"Goutam",
""
],
[
"Biswas",
"Sujay Kr.",
""
],
[
"Saha",
"Subhajit",
""
],
[
"Mamon",
"Abdulla Al",
""
]
] | We consider a spatially flat FLRW universe. We assume that it is filled with dark energy in the form of logotropic dark fluid coupled with dark matter in the form of a perfect fluid having a barotropic equation of state. We employ dynamical system tools to obtain a complete qualitative idea of the evolution of such a u... |
1502.05493 | Salvatore Capozziello | Alireza Sepehri, Salvatore Capozziello, Mohammad Reza Setare | A bridge between unified cosmic history by $f(R)$-gravity and BIonic
system | 12 pages | null | 10.1007/s10714-016-2051-4 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, the cosmological deceleration-acceleration transition redshift in
$f(R)$ gravity has been considered in order to address consistently the problem
of cosmic evolution. It is possible to show that the deceleration parameter
changes sign at a given redshift according to observational data. Furthermore,
a $f(R)... | [
{
"created": "Thu, 19 Feb 2015 08:38:23 GMT",
"version": "v1"
}
] | 2016-04-27 | [
[
"Sepehri",
"Alireza",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"Setare",
"Mohammad Reza",
""
]
] | Recently, the cosmological deceleration-acceleration transition redshift in $f(R)$ gravity has been considered in order to address consistently the problem of cosmic evolution. It is possible to show that the deceleration parameter changes sign at a given redshift according to observational data. Furthermore, a $f(R)$ ... |
0709.2784 | Jan Ambjorn | J. Ambjorn, R. Loll, W. Westra and S. Zohren | Putting a cap on causality violations in CDT | 17 pages, 4 figures | JHEP0712:017,2007 | 10.1088/1126-6708/2007/12/017 | null | gr-qc hep-th | null | The formalism of causal dynamical triangulations (CDT) provides us with a
non-perturbatively defined model of quantum gravity, where the sum over
histories includes only causal space-time histories. Path integrals of CDT and
their continuum limits have been studied in two, three and four dimensions.
Here we investiga... | [
{
"created": "Tue, 18 Sep 2007 10:22:18 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Ambjorn",
"J.",
""
],
[
"Loll",
"R.",
""
],
[
"Westra",
"W.",
""
],
[
"Zohren",
"S.",
""
]
] | The formalism of causal dynamical triangulations (CDT) provides us with a non-perturbatively defined model of quantum gravity, where the sum over histories includes only causal space-time histories. Path integrals of CDT and their continuum limits have been studied in two, three and four dimensions. Here we investigate... |
gr-qc/9509016 | null | J. P\'erez-Mercader, T. Goldman, D. Hochberg and R. Laflamme | Renormalization Group Calculation of the Galaxy-Galaxy Correlation
Function | Based on a talk presented at the International Workshop on Elementary
Particle Physics, Valencia, Spain, June 1995. Six pages using the macro which
is appended at the end of the paper. Runs using standard LaTex 2.09. Strip
off this macro and place in separate file to be named sprocl.sty | null | null | LAEFF-95-13 and FTUAM-95-29 | gr-qc | null | The observable Universe is described by a collection of equal mass galaxies
linked into a common unit by their mutual gravitational interaction. The
partition function of this system is cast in terms of Ising model spin
variables and maps exactly onto a three-dimensional stochastic scalar classical
field theory. The ... | [
{
"created": "Fri, 8 Sep 1995 10:51:08 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pérez-Mercader",
"J.",
""
],
[
"Goldman",
"T.",
""
],
[
"Hochberg",
"D.",
""
],
[
"Laflamme",
"R.",
""
]
] | The observable Universe is described by a collection of equal mass galaxies linked into a common unit by their mutual gravitational interaction. The partition function of this system is cast in terms of Ising model spin variables and maps exactly onto a three-dimensional stochastic scalar classical field theory. The fu... |
2201.00664 | Jie Jiang | Aofei Sang and Jie Jiang | Strong Cosmic Censorship in Einstein-Maxwell-Scalar-Gauss-Bonnet Theory | 9 pages, 9 figures and 1 table | null | 10.1103/PhysRevD.105.084047 | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | Recently, it is found that the strong cosmic censorship (SCC) is violated in
RNdS black hole by a minimal coupled neutral massless scalar field at the
linear perturbation level. For the Einstein-Maxwell-Scalar-Gauss-Bonnet theory
which is famous for the spontaneous scalarization phenomenon, there exists the
scalar fi... | [
{
"created": "Mon, 3 Jan 2022 13:57:51 GMT",
"version": "v1"
}
] | 2022-05-11 | [
[
"Sang",
"Aofei",
""
],
[
"Jiang",
"Jie",
""
]
] | Recently, it is found that the strong cosmic censorship (SCC) is violated in RNdS black hole by a minimal coupled neutral massless scalar field at the linear perturbation level. For the Einstein-Maxwell-Scalar-Gauss-Bonnet theory which is famous for the spontaneous scalarization phenomenon, there exists the scalar fiel... |
1512.03560 | Xiaobo Guo | Xiaobo Guo and Peng Wang and Haitang Yang | The Classical Limit of Minimal Length Uncertainty Relation:Revisit with
the Hamilton-Jacobi Method | 24 pages | null | 10.1088/1475-7516/2016/05/062 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of a minimum measurable length could deform not only the
standard quantum mechanics but also classical physics. The effects of the
minimal length on classical orbits of particles in a gravitation field have
been investigated before, using the deformed Poisson bracket or Schwarzschild
metric. In this pap... | [
{
"created": "Fri, 11 Dec 2015 09:15:31 GMT",
"version": "v1"
}
] | 2016-06-01 | [
[
"Guo",
"Xiaobo",
""
],
[
"Wang",
"Peng",
""
],
[
"Yang",
"Haitang",
""
]
] | The existence of a minimum measurable length could deform not only the standard quantum mechanics but also classical physics. The effects of the minimal length on classical orbits of particles in a gravitation field have been investigated before, using the deformed Poisson bracket or Schwarzschild metric. In this paper... |
1401.7038 | Jonathan Blackman | Jonathan Blackman, Bela Szilagyi, Chad R. Galley, Manuel Tiglio | A sparse representation of gravitational waves from precessing compact
binaries | 5 pages, 3 figures. The parameters selected for the basis of
precessing waveforms can be found in the source files | Phys. Rev. Lett. 113, 021101 (2014) | 10.1103/PhysRevLett.113.021101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Many relevant applications in gravitational wave physics share a significant
common problem: the seven-dimensional parameter space of gravitational
waveforms from precessing compact binary inspirals and coalescences is large
enough to prohibit covering the space of waveforms with sufficient density. We
find that by u... | [
{
"created": "Mon, 27 Jan 2014 22:16:30 GMT",
"version": "v1"
}
] | 2014-07-16 | [
[
"Blackman",
"Jonathan",
""
],
[
"Szilagyi",
"Bela",
""
],
[
"Galley",
"Chad R.",
""
],
[
"Tiglio",
"Manuel",
""
]
] | Many relevant applications in gravitational wave physics share a significant common problem: the seven-dimensional parameter space of gravitational waveforms from precessing compact binary inspirals and coalescences is large enough to prohibit covering the space of waveforms with sufficient density. We find that by usi... |
1401.8208 | Surajit Chattopadhyay | Surajit Chattopadhyay, Antonio Pasqua and Martiros Khurshudyan | New holographic reconstruction of scalar field dark energy models in the
framework of chameleon Brans-Dicke cosmology | 25 pages, 13 figures. arXiv admin note: text overlap with
arXiv:0810.4296 by other authors | Eur. Phys. J. C (2014) 74:3080 | 10.1140/epjc/s10052-014-3080-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the work of Yang et al., \emph{Mod. Phys. Lett. A}, \textbf{26},
191 (2011), we report a study on the New Holographic Dark Energy (NHDE) model
with energy density given by $\rho_D=\frac{3\phi^2}{4\omega}(\mu H^2+\nu
\dot{H})$ in the framework of chameleon Brans-Dicke cosmology. We have studied
a correspo... | [
{
"created": "Thu, 30 Jan 2014 11:10:31 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Jun 2014 06:55:45 GMT",
"version": "v2"
},
{
"created": "Fri, 13 Jun 2014 10:29:18 GMT",
"version": "v3"
},
{
"created": "Sun, 31 Aug 2014 11:40:11 GMT",
"version": "v4"
}
] | 2014-10-31 | [
[
"Chattopadhyay",
"Surajit",
""
],
[
"Pasqua",
"Antonio",
""
],
[
"Khurshudyan",
"Martiros",
""
]
] | Motivated by the work of Yang et al., \emph{Mod. Phys. Lett. A}, \textbf{26}, 191 (2011), we report a study on the New Holographic Dark Energy (NHDE) model with energy density given by $\rho_D=\frac{3\phi^2}{4\omega}(\mu H^2+\nu \dot{H})$ in the framework of chameleon Brans-Dicke cosmology. We have studied a correspond... |
2307.15867 | Seraphim Jarov | Seraphim Jarov, Sarah Thiele, Siddharth Soni, Julian Ding, Jess
McIver, Raymond Ng, Rikako Hatoya, Derek Davis | A new method to distinguish gravitational-wave signals from detector
noise transients with Gravity Spy | 11 pages, 7 figures, submitted to PHYSICAL REVIEW D | null | null | null | gr-qc astro-ph.HE astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | The Advanced LIGO and Advanced Virgo detectors have enabled the confident
detection of dozens of mergers of black holes and neutron stars. However, the
presence of detector noise transients (glitches) hinders the search for these
gravitational wave (GW) signals. We prototyped a restructuring of Gravity Spy's
classifi... | [
{
"created": "Sat, 29 Jul 2023 02:18:27 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Feb 2024 05:09:30 GMT",
"version": "v2"
}
] | 2024-02-06 | [
[
"Jarov",
"Seraphim",
""
],
[
"Thiele",
"Sarah",
""
],
[
"Soni",
"Siddharth",
""
],
[
"Ding",
"Julian",
""
],
[
"McIver",
"Jess",
""
],
[
"Ng",
"Raymond",
""
],
[
"Hatoya",
"Rikako",
""
],
[
"Davis",... | The Advanced LIGO and Advanced Virgo detectors have enabled the confident detection of dozens of mergers of black holes and neutron stars. However, the presence of detector noise transients (glitches) hinders the search for these gravitational wave (GW) signals. We prototyped a restructuring of Gravity Spy's classifica... |
1507.03620 | Fabricio Matos Ferreira | Fabricio M. Ferreira, Ilya L. Shapiro and Poliane M. Teixeira | On the conformal properties of topological terms in even dimensions | New results and important references added, some formulations
improved. Fits published version | Eur. Phys. J. Plus (2016) 131: 164 | 10.1140/epjp/i2016-16164-9 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Conformal properties of the topological gravitational terms in $D=2$, $D=4$
and $D=6$ are discussed. It is shown that in the last two cases the integrands
of these terms, when being settled into the dimension $D-1$ and multiplied by a
scalar, become conformal invariant. Furthermore we present a simple covariant
deriv... | [
{
"created": "Mon, 13 Jul 2015 21:09:47 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jul 2015 22:00:01 GMT",
"version": "v2"
},
{
"created": "Tue, 24 May 2016 16:40:25 GMT",
"version": "v3"
}
] | 2016-05-25 | [
[
"Ferreira",
"Fabricio M.",
""
],
[
"Shapiro",
"Ilya L.",
""
],
[
"Teixeira",
"Poliane M.",
""
]
] | Conformal properties of the topological gravitational terms in $D=2$, $D=4$ and $D=6$ are discussed. It is shown that in the last two cases the integrands of these terms, when being settled into the dimension $D-1$ and multiplied by a scalar, become conformal invariant. Furthermore we present a simple covariant derivat... |
2209.00450 | Rikpratik Sengupta | Prasenjit Paul, Rikpratik Sengupta and Saibal Ray | Weyl transformation: a dynamical degree of freedom in the light of
Dirac's Large Number Hypothesis | 11 Pages, Previously this version appeared as arXiv:2005.09458v2
which was submitted as a replacement work by accident | International Journal of Modern Physics D Vol. 29, No. 03, 2050027
(2020) | 10.1142/S0218271820500273 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In Einstein's Field Equation(EFE) the geometry of the space-time is connected
with the matter distribution. The geometry or the gravitational sector deals
with classical macroscopic objects involving gravitational units while the
matter sector can be better described by quantum theory involving atomic units.
It has b... | [
{
"created": "Wed, 31 Aug 2022 11:12:27 GMT",
"version": "v1"
}
] | 2022-09-07 | [
[
"Paul",
"Prasenjit",
""
],
[
"Sengupta",
"Rikpratik",
""
],
[
"Ray",
"Saibal",
""
]
] | In Einstein's Field Equation(EFE) the geometry of the space-time is connected with the matter distribution. The geometry or the gravitational sector deals with classical macroscopic objects involving gravitational units while the matter sector can be better described by quantum theory involving atomic units. It has bee... |
0801.2110 | S Habib Mazharimousavi | S. Habib Mazharimousavi and M. Halilsoy | Black Hole solutions in Einstein-Maxwell-Yang-Mills-Gauss-Bonnet Theory | 20 pages, 5 figures, to be published in JCAP | J. Cosmol. Astropart. Phys. 12 (2008) 005 | 10.1088/1475-7516/2008/12/005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Maxwell and Yang-Mills (YM) fields together, interacting through
gravity both in Einstein and Gauss-Bonnet (GB) theories. For this purpose we
choose two different sets of Maxwell and metric ansaetze. In our first ansatz,
asymptotically for $r\to 0$ (and $N>4$) the Maxwell field dominants over the YM
field... | [
{
"created": "Mon, 14 Jan 2008 16:31:13 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Mar 2008 11:56:53 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Oct 2008 16:42:23 GMT",
"version": "v3"
},
{
"created": "Thu, 13 Nov 2008 15:44:15 GMT",
"version": "v4"
}
] | 2009-11-13 | [
[
"Mazharimousavi",
"S. Habib",
""
],
[
"Halilsoy",
"M.",
""
]
] | We consider Maxwell and Yang-Mills (YM) fields together, interacting through gravity both in Einstein and Gauss-Bonnet (GB) theories. For this purpose we choose two different sets of Maxwell and metric ansaetze. In our first ansatz, asymptotically for $r\to 0$ (and $N>4$) the Maxwell field dominants over the YM field. ... |
gr-qc/9410004 | null | P.T. Chrusciel, R.M. Wald | On the topology of stationary black holes | 7 pages, Latex | Class.Quant.Grav.11:L147-L152,1994 | 10.1088/0264-9381/11/12/001 | null | gr-qc | null | We prove that the domain of outer communication of a stationary, globally
hyperbolic spacetime satisfying the null energy condition must be simply
connected. Under suitable additional hypotheses, this implies, in particular,
that each connected component of a cross-section of the event horizon of a
stationary black h... | [
{
"created": "Wed, 5 Oct 1994 09:28:12 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Chrusciel",
"P. T.",
""
],
[
"Wald",
"R. M.",
""
]
] | We prove that the domain of outer communication of a stationary, globally hyperbolic spacetime satisfying the null energy condition must be simply connected. Under suitable additional hypotheses, this implies, in particular, that each connected component of a cross-section of the event horizon of a stationary black hol... |
gr-qc/0104015 | Luis Bento | Luis Bento and Jose P. S. Lemos | Interaction between gravitational waves and domain walls | 15 pages | Phys.Rev. D64 (2001) 024011 | 10.1103/PhysRevD.64.024011 | null | gr-qc astro-ph hep-th | null | We study the gravitational perturbations of thick domain walls. The
refraction index and spin properties of the solutions interior to the wall are
analyzed in detail. It is shown that the gravitational waves suffer a
refraction process by domain walls. The reflection and transmission
coefficients are derived in the t... | [
{
"created": "Wed, 4 Apr 2001 15:47:57 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Jun 2001 16:34:56 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Bento",
"Luis",
""
],
[
"Lemos",
"Jose P. S.",
""
]
] | We study the gravitational perturbations of thick domain walls. The refraction index and spin properties of the solutions interior to the wall are analyzed in detail. It is shown that the gravitational waves suffer a refraction process by domain walls. The reflection and transmission coefficients are derived in the thi... |
gr-qc/0012069 | Jljing | Jiliang Jing, Mu-Lin Yan | Effect of spins on the quantum entropy of black holes | 10 pages, no figure, to appear in Phys. Rev. D | Phys.Rev. D63 (2001) 084028 | 10.1103/PhysRevD.63.084028 | null | gr-qc hep-th | null | By using the Newman-Penrose formalism and 't Hooft brick-wall model, the
quantum entropies of the Kerr-Newman black hole due to the Dirac and
electromagnetic fields are calculated and the effects of the spins of the
photons and Dirac particles on the entropies are investigated. It is shown that
the entropies depend o... | [
{
"created": "Tue, 19 Dec 2000 13:13:53 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Mar 2001 08:55:31 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Jing",
"Jiliang",
""
],
[
"Yan",
"Mu-Lin",
""
]
] | By using the Newman-Penrose formalism and 't Hooft brick-wall model, the quantum entropies of the Kerr-Newman black hole due to the Dirac and electromagnetic fields are calculated and the effects of the spins of the photons and Dirac particles on the entropies are investigated. It is shown that the entropies depend onl... |
1811.12292 | Paulo Luz | Paulo Luz, Filipe C. Mena, Amir Hadi Ziaie | Influence of intrinsic spin in the formation of singularities for
inhomogeneous effective dust space-times | 18 pages, 4 figures, to appear in Classical and Quantum Gravity | Class.Quant.Grav. 36 (2019) no.1, 015003 | 10.1088/1361-6382/aae9ff | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The evolution of inhomogeneous space-times composed of uncharged fermions is
studied for Szekeres metrics which have no Killing vectors, in general. Using
the Einstein-Cartan theory to include the effects of (intrinsic) matter spin in
General Relativity, the dynamics of a perfect fluid with non-null spin degrees
of f... | [
{
"created": "Thu, 29 Nov 2018 16:33:11 GMT",
"version": "v1"
}
] | 2019-01-04 | [
[
"Luz",
"Paulo",
""
],
[
"Mena",
"Filipe C.",
""
],
[
"Ziaie",
"Amir Hadi",
""
]
] | The evolution of inhomogeneous space-times composed of uncharged fermions is studied for Szekeres metrics which have no Killing vectors, in general. Using the Einstein-Cartan theory to include the effects of (intrinsic) matter spin in General Relativity, the dynamics of a perfect fluid with non-null spin degrees of fre... |
0812.3948 | Dmitri Vassiliev | James Burnett, Olga Chervova and Dmitri Vassiliev | Dirac equation as a special case of Cosserat elasticity | Submitted to Analysis, Partial Differential Equations and
Applications - The Vladimir Maz'ya Anniversary Volume (Operator Theory:
Advances and Applications) Birkauser Verlag | Analysis, Partial Differential Equations and Applications - The
Vladimir Maz'ya Anniversary Volume (ed. A.Cialdea, F.Lanzara and P.E.Ricci),
series Operator Theory: Advances and Applications, vol. 193, Birkhauser
Verlag, 2009, p. 15-29. | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We suggest an alternative mathematical model for the electron in which the
dynamical variables are a coframe (field of orthonormal bases) and a density.
The electron mass and external electromagnetic field are incorporated into our
model by means of a Kaluza-Klein extension. Our Lagrangian density is
proportional to ... | [
{
"created": "Mon, 22 Dec 2008 15:47:47 GMT",
"version": "v1"
}
] | 2009-10-03 | [
[
"Burnett",
"James",
""
],
[
"Chervova",
"Olga",
""
],
[
"Vassiliev",
"Dmitri",
""
]
] | We suggest an alternative mathematical model for the electron in which the dynamical variables are a coframe (field of orthonormal bases) and a density. The electron mass and external electromagnetic field are incorporated into our model by means of a Kaluza-Klein extension. Our Lagrangian density is proportional to ax... |
0707.3525 | Lorenzo Iorio | Lorenzo Iorio | On the orbital and physical parameters of the HDE 226868/Cygnus X-1
binary system | Latex2e, 7 pages, 1 table, 4 figures. To appear in ApSS (Astrophysics
and Space Science) | Astrophys.SpaceSci.315:335-340,2008 | 10.1007/s10509-008-9839-y | null | gr-qc astro-ph | null | In this paper we explore the consequences of the recent determination of the
mass m=(8.7 +/- 0.8)M_Sun of Cygnus X-1, obtained from the Quasi-Periodic
Oscillation (QPO)-photon index correlation scaling, on the orbital and physical
properties of the binary system HDE 226868/Cygnus X-1. By using such a result
and the l... | [
{
"created": "Tue, 24 Jul 2007 11:00:19 GMT",
"version": "v1"
},
{
"created": "Mon, 26 May 2008 16:01:24 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Iorio",
"Lorenzo",
""
]
] | In this paper we explore the consequences of the recent determination of the mass m=(8.7 +/- 0.8)M_Sun of Cygnus X-1, obtained from the Quasi-Periodic Oscillation (QPO)-photon index correlation scaling, on the orbital and physical properties of the binary system HDE 226868/Cygnus X-1. By using such a result and the lat... |
gr-qc/9911098 | Lee Samuel Finn | Soma Mukherjee and Lee Samuel Finn | Removing Instrumental Artifacts: Suspension Violin Modes | 7 pages, 2 embedded figures. To appear in proceedings of the Third
Edoardo Amaldi Conference | null | 10.1063/1.1291880 | null | gr-qc | null | We describe the design of a Kalman filter that identifies suspension violin
modes in an interferometric gravitational wave detectors data channel. We
demonstrate the filter's effectiveness by applying it to data taken on the
LIGO~40M prototype.
| [
{
"created": "Thu, 25 Nov 1999 01:30:43 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Mukherjee",
"Soma",
""
],
[
"Finn",
"Lee Samuel",
""
]
] | We describe the design of a Kalman filter that identifies suspension violin modes in an interferometric gravitational wave detectors data channel. We demonstrate the filter's effectiveness by applying it to data taken on the LIGO~40M prototype. |
1501.00977 | Vitor Cardoso | Vitor Cardoso, Gaurav Khanna | Black holes in anti-de Sitter: quasinormal modes, tails and tales of
flat spacetime | 6 pages, RevTex4. Accepted for publication in Physical Review D. v2:
References added | null | 10.1103/PhysRevD.91.024031 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black holes in asymptotically anti-de Sitter (AdS) spacetimes have been the
subject of intense scrutiny, including detailed frequency-domain analysis and
full nonlinear evolutions. Remarkably, studies of linearized perturbations in
the time-domain are scarce or non-existing. We close this gap by evolving
linearized s... | [
{
"created": "Mon, 5 Jan 2015 21:00:09 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Jan 2015 15:20:11 GMT",
"version": "v2"
}
] | 2015-06-23 | [
[
"Cardoso",
"Vitor",
""
],
[
"Khanna",
"Gaurav",
""
]
] | Black holes in asymptotically anti-de Sitter (AdS) spacetimes have been the subject of intense scrutiny, including detailed frequency-domain analysis and full nonlinear evolutions. Remarkably, studies of linearized perturbations in the time-domain are scarce or non-existing. We close this gap by evolving linearized sca... |
0807.2523 | Sylvain Brechet | S. D. Brechet, M. P. Hobson, A. N. Lasenby | Classical big-bounce cosmology: dynamical analysis of a homogeneous and
irrotational Weyssenhoff fluid | 34 pages, 18 figures | Class. Quantum Grav. 25 (2008) 245016 (35pp) | 10.1088/0264-9381/25/24/245016 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A dynamical analysis of an effective homogeneous and irrotational Weyssenhoff
fluid in general relativity is performed using the 1+3 covariant approach that
enables the dynamics of the fluid to be determined without assuming any
particular form for the space-time metric. The spin contributions to the field
equations ... | [
{
"created": "Wed, 16 Jul 2008 09:36:04 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Dec 2008 10:43:20 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Brechet",
"S. D.",
""
],
[
"Hobson",
"M. P.",
""
],
[
"Lasenby",
"A. N.",
""
]
] | A dynamical analysis of an effective homogeneous and irrotational Weyssenhoff fluid in general relativity is performed using the 1+3 covariant approach that enables the dynamics of the fluid to be determined without assuming any particular form for the space-time metric. The spin contributions to the field equations pr... |
2404.15792 | Marcos Vinicius De Sousa Silva | Marcos V. de S. Silva, Manuel E. Rodrigues | Orbits around a black bounce spacetime | 17 pages, 10 figures. Published in International Journal of
Theoretical Physics. V2: corrected typos, added references | International Journal of Theoretical Physics (2024) 63:101 | 10.1007/s10773-024-05644-5 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work, the trajectories of particles around a black bounce spacetime
are considered, with the Simpson-Visser model serving as an example.
Trajectories for massless and massive particles are obtained through the study
of null and time-like geodesics. As the Simpson-Visser solution is derived via
the Einstein eq... | [
{
"created": "Wed, 24 Apr 2024 10:32:59 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Apr 2024 14:50:04 GMT",
"version": "v2"
}
] | 2024-04-29 | [
[
"Silva",
"Marcos V. de S.",
""
],
[
"Rodrigues",
"Manuel E.",
""
]
] | In this work, the trajectories of particles around a black bounce spacetime are considered, with the Simpson-Visser model serving as an example. Trajectories for massless and massive particles are obtained through the study of null and time-like geodesics. As the Simpson-Visser solution is derived via the Einstein equa... |
1004.2040 | Ariel Zhitnitsky | Ariel R. Zhitnitsky | The Gauge Fields and Ghosts in Rindler Space | Final version to appear in Phys. Rev. D. Comments on relation with
energy momentum computations and few new refs are added | Phys.Rev.D82:103520,2010 | 10.1103/PhysRevD.82.103520 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider 2d Maxwell system defined on the Rindler space with metric
ds^2=\exp(2a\xi)\cdot(d\eta^2-d\xi^2) with the goal to study the dynamics of
the ghosts. We find an extra contribution to the vacuum energy in comparison
with Minkowski space time with metric ds^2= dt^2-dx^2. This extra contribution
can be traced ... | [
{
"created": "Mon, 12 Apr 2010 20:00:03 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Aug 2010 19:08:30 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Oct 2010 17:30:14 GMT",
"version": "v3"
}
] | 2010-12-09 | [
[
"Zhitnitsky",
"Ariel R.",
""
]
] | We consider 2d Maxwell system defined on the Rindler space with metric ds^2=\exp(2a\xi)\cdot(d\eta^2-d\xi^2) with the goal to study the dynamics of the ghosts. We find an extra contribution to the vacuum energy in comparison with Minkowski space time with metric ds^2= dt^2-dx^2. This extra contribution can be traced to... |
1609.03573 | Ian Jubb | Michel Buck, Fay Dowker, Ian Jubb, Rafael Sorkin | The Sorkin-Johnston State in a Patch of the Trousers Spacetime | null | Class.Quant.Grav. 34 (2017) 5, 055002 | 10.1088/1361-6382/aa589c | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A quantum scalar field in a patch of a fixed, topology-changing, $1+1$
dimensional "trousers" spacetime is studied using the Sorkin-Johnston
formalism. The isometry group of the patch is the dihedral group, the symmetry
group of the square. The theory is shown to be pathological in a way that can
be interpreted as th... | [
{
"created": "Mon, 12 Sep 2016 20:00:07 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Feb 2017 15:05:05 GMT",
"version": "v2"
}
] | 2017-02-17 | [
[
"Buck",
"Michel",
""
],
[
"Dowker",
"Fay",
""
],
[
"Jubb",
"Ian",
""
],
[
"Sorkin",
"Rafael",
""
]
] | A quantum scalar field in a patch of a fixed, topology-changing, $1+1$ dimensional "trousers" spacetime is studied using the Sorkin-Johnston formalism. The isometry group of the patch is the dihedral group, the symmetry group of the square. The theory is shown to be pathological in a way that can be interpreted as the ... |
1911.01128 | Yu Han | Yu Han | Loop quantum cosmological dynamics of scalar-tensor theory in the Jordan
frame | 22 pages | Phys. Rev. D 100, 123541 (2019) | 10.1103/PhysRevD.100.123541 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effective dynamics of scalar-tensor theory (STT) in the Jordan frame is
studied in the context of loop quantum cosmology with holonomy corrections.
After deriving the effective Hamiltonian from the connection dynamics
formulation, we obtain the holonomy-corrected evolution equations of STT on
spatially flat Fried... | [
{
"created": "Mon, 4 Nov 2019 11:01:46 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Dec 2019 02:50:26 GMT",
"version": "v2"
}
] | 2020-01-01 | [
[
"Han",
"Yu",
""
]
] | The effective dynamics of scalar-tensor theory (STT) in the Jordan frame is studied in the context of loop quantum cosmology with holonomy corrections. After deriving the effective Hamiltonian from the connection dynamics formulation, we obtain the holonomy-corrected evolution equations of STT on spatially flat Friedma... |
1010.5822 | Andrew Randono | Andrew Randono | Gauge Gravity: a forward-looking introduction | 62 pages, 8 figures | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article is a review of modern approaches to gravity that treat the
gravitational interaction as a type of gauge theory. The purpose of the article
is twofold. First, it is written in a colloquial style and is intended to be a
pedagogical introduction to the gauge approach to gravity. I begin with a
review of the... | [
{
"created": "Wed, 27 Oct 2010 22:59:17 GMT",
"version": "v1"
}
] | 2010-10-29 | [
[
"Randono",
"Andrew",
""
]
] | This article is a review of modern approaches to gravity that treat the gravitational interaction as a type of gauge theory. The purpose of the article is twofold. First, it is written in a colloquial style and is intended to be a pedagogical introduction to the gauge approach to gravity. I begin with a review of the E... |
1104.3401 | Tayebeh Tahamtan | Tayebeh Tahamtan and Mustafa Halilsoy | Stable Magnetic Universes Revisited | 11 pages, 3figures | Astrophysics and Space Science, 343, 435 (2013) | 10.1007/s10509-012-1217-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A regular class of static, cylindrically symmetric pure magnetic field
metrics is rederived in a different metric ansatz in all dimensions. Radial,
time dependent perturbations show that for dimensions d>3 such spacetimes are
stable at both near r\approx0 and large radius r\rightarrow\infty. In a
different gauge thes... | [
{
"created": "Mon, 18 Apr 2011 07:44:35 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Jun 2011 07:00:19 GMT",
"version": "v2"
}
] | 2016-09-30 | [
[
"Tahamtan",
"Tayebeh",
""
],
[
"Halilsoy",
"Mustafa",
""
]
] | A regular class of static, cylindrically symmetric pure magnetic field metrics is rederived in a different metric ansatz in all dimensions. Radial, time dependent perturbations show that for dimensions d>3 such spacetimes are stable at both near r\approx0 and large radius r\rightarrow\infty. In a different gauge these ... |
gr-qc/0702071 | Yun-Song Piao | Yun-Song Piao | Primordial Perturbations Spectra in a Holographic Phase | 5 pages, 3 eps figures, to be published in PRD | Phys.Rev.D76:043509,2007 | 10.1103/PhysRevD.76.043509 | null | gr-qc hep-th | null | In this paper, we suppose that the universe begins in a holographic thermal
equilibrium phase with the diverged correlation length, and the phase
transition to the radiation phase of standard cosmology goes with the abrupt
reducing of correlation length. In this case, the primordial perturbations may
be induced by th... | [
{
"created": "Tue, 13 Feb 2007 10:25:38 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Jul 2007 03:18:10 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Piao",
"Yun-Song",
""
]
] | In this paper, we suppose that the universe begins in a holographic thermal equilibrium phase with the diverged correlation length, and the phase transition to the radiation phase of standard cosmology goes with the abrupt reducing of correlation length. In this case, the primordial perturbations may be induced by ther... |
1401.0075 | Christopher Beetle | Christopher Beetle and Shawn Wilder | A note on axial symmetries | 6 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This note describes a local scheme to characterize and normalize an axial
Killing field on a general Riemannian geometry. No global assumptions are
necessary, such as that the orbits of the Killing field all have period $2
\pi$. Rather, any Killing field that vanishes at at least one point necessarily
has the expecte... | [
{
"created": "Tue, 31 Dec 2013 03:06:15 GMT",
"version": "v1"
}
] | 2014-01-03 | [
[
"Beetle",
"Christopher",
""
],
[
"Wilder",
"Shawn",
""
]
] | This note describes a local scheme to characterize and normalize an axial Killing field on a general Riemannian geometry. No global assumptions are necessary, such as that the orbits of the Killing field all have period $2 \pi$. Rather, any Killing field that vanishes at at least one point necessarily has the expected ... |
gr-qc/0503024 | Yongge Ma | Muxin Han, Yongge Ma, You Ding, Li Qin | Hamiltonian analysis of $n$-dimensional Palatini gravity with matter | 7 pages, accepted for pubilcation in Mod. Phys. Lett. A | Mod.Phys.Lett. A20 (2005) 725-732 | 10.1142/S0217732305017068 | null | gr-qc | null | We consider the Palatini formalism of gravity with cosmological constant
$\Lambda$ coupled to a scalar field $\phi$ in $n$-dimensions. The
$n$-dimensional Einstein equations with $\Lambda$ can be derived by the
variation of the coupled Palatini action provided $n>2$. The Hamiltonian
analysis of the coupled action is ... | [
{
"created": "Sat, 5 Mar 2005 04:13:11 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Han",
"Muxin",
""
],
[
"Ma",
"Yongge",
""
],
[
"Ding",
"You",
""
],
[
"Qin",
"Li",
""
]
] | We consider the Palatini formalism of gravity with cosmological constant $\Lambda$ coupled to a scalar field $\phi$ in $n$-dimensions. The $n$-dimensional Einstein equations with $\Lambda$ can be derived by the variation of the coupled Palatini action provided $n>2$. The Hamiltonian analysis of the coupled action is ca... |
2210.06598 | Giovanni Otalora | Giovanni Otalora, Emmanuel N. Saridakis | Effective dark energy through spin-gravity coupling | 8 pages, 4 figures, version published in Phys.Lett.B | null | 10.1016/j.physletb.2023.137970 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate cosmological scenarios with spin-gravity coupling. In
particular, due to the spin of the baryonic and dark matter particles and its
coupling to gravity, they probe an effective spin-dependent metric, which can
be calculated semi-classically in the Mathisson-Papapetrou-Tulczyjew-Dixon
formalism. Hence, ... | [
{
"created": "Wed, 12 Oct 2022 21:30:48 GMT",
"version": "v1"
},
{
"created": "Mon, 22 May 2023 03:46:36 GMT",
"version": "v2"
}
] | 2023-05-23 | [
[
"Otalora",
"Giovanni",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We investigate cosmological scenarios with spin-gravity coupling. In particular, due to the spin of the baryonic and dark matter particles and its coupling to gravity, they probe an effective spin-dependent metric, which can be calculated semi-classically in the Mathisson-Papapetrou-Tulczyjew-Dixon formalism. Hence, th... |
2106.04141 | S. Shankaranarayanan | Vijay Nenmeli, S. Shankaranarayanan (IIT Bombay), Vasil Todorinov and
Saurya Das (University of Lethbridge) | Maximal momentum GUP leads to quadratic gravity | 22 Pages, 2 Figures, Title modified, References Added, Version to
appear in Physics Letters B | null | 10.1016/j.physletb.2021.136621 | null | gr-qc astro-ph.CO hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | Quantum theories of gravity predict interesting phenomenological features
such as a minimum measurable length and maximum momentum. We use the
Generalized Uncertainty Principle (GUP), which is an extension of the standard
Heisenberg Uncertainty Principle motivated by Quantum Gravity, to model the
above features. In p... | [
{
"created": "Tue, 8 Jun 2021 06:57:17 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Sep 2021 02:53:54 GMT",
"version": "v2"
}
] | 2021-09-10 | [
[
"Nenmeli",
"Vijay",
"",
"IIT Bombay"
],
[
"Shankaranarayanan",
"S.",
"",
"IIT Bombay"
],
[
"Todorinov",
"Vasil",
"",
"University of Lethbridge"
],
[
"Das",
"Saurya",
"",
"University of Lethbridge"
]
] | Quantum theories of gravity predict interesting phenomenological features such as a minimum measurable length and maximum momentum. We use the Generalized Uncertainty Principle (GUP), which is an extension of the standard Heisenberg Uncertainty Principle motivated by Quantum Gravity, to model the above features. In par... |
1406.0369 | Jaume Haro | Jaume Haro and Jaume Amor\'os | Viability of the matter bounce scenario in Loop Quantum Cosmology for
general potentials | A section about reheating in the matter bounce scenario has been
added. Version accepted for publication in JCAP | JCAP(12) 031 (2014) | 10.1088/1475-7516/2014/12/031 | 1406.0369 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the matter bounce scenario in Loop Quantum Cosmology (LQC) for
physical potentials that at early times provide a nearly matter dominated
Universe in the contracting phase, having a reheating mechanism in the
expanding phase, i.e., being able to release the energy of the scalar field
creating particles tha... | [
{
"created": "Mon, 2 Jun 2014 13:49:56 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Jun 2014 11:14:46 GMT",
"version": "v2"
},
{
"created": "Tue, 5 Aug 2014 18:23:22 GMT",
"version": "v3"
},
{
"created": "Mon, 1 Dec 2014 14:49:27 GMT",
"version": "v4"
}
] | 2015-06-19 | [
[
"Haro",
"Jaume",
""
],
[
"Amorós",
"Jaume",
""
]
] | We consider the matter bounce scenario in Loop Quantum Cosmology (LQC) for physical potentials that at early times provide a nearly matter dominated Universe in the contracting phase, having a reheating mechanism in the expanding phase, i.e., being able to release the energy of the scalar field creating particles that ... |
gr-qc/0604112 | Wojciech Kami\'nski | W. Kaminski, J. Lewandowski, A. Okolow | Background independent quantizations: the scalar field II | 51 pages, LaTeX, no figures, revised version | Class.Quant.Grav. 23 (2006) 5547-5586 | 10.1088/0264-9381/23/18/005 | null | gr-qc | null | We are concerned with the issue of quantization of a scalar field in a
diffeomorphism invariant manner. We apply the method used in Loop Quantum
Gravity. It relies on the specific choice of scalar field variables referred to
as the polymer variables. The quantization, in our formulation, amounts to
introducing the `q... | [
{
"created": "Wed, 26 Apr 2006 13:55:29 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Sep 2006 11:56:25 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Kaminski",
"W.",
""
],
[
"Lewandowski",
"J.",
""
],
[
"Okolow",
"A.",
""
]
] | We are concerned with the issue of quantization of a scalar field in a diffeomorphism invariant manner. We apply the method used in Loop Quantum Gravity. It relies on the specific choice of scalar field variables referred to as the polymer variables. The quantization, in our formulation, amounts to introducing the `qua... |
2405.20246 | David McNutt | David McNutt, Eivind Schneider | Detecting horizons of symmetric black holes using relative differential
invariants | 29+3 pages | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Let $\mathfrak{k}$ be a nontrivial finite-dimensional Lie algebra of vector
fields on a manifold M, and consider the family of Lorentzian metrics on M
whose Killing algebra contains $\mathfrak{k}$. We show that scalar relative
differential invariants, with respect to a Lie algebra of vector fields on M
preserving $\m... | [
{
"created": "Thu, 30 May 2024 16:55:05 GMT",
"version": "v1"
}
] | 2024-05-31 | [
[
"McNutt",
"David",
""
],
[
"Schneider",
"Eivind",
""
]
] | Let $\mathfrak{k}$ be a nontrivial finite-dimensional Lie algebra of vector fields on a manifold M, and consider the family of Lorentzian metrics on M whose Killing algebra contains $\mathfrak{k}$. We show that scalar relative differential invariants, with respect to a Lie algebra of vector fields on M preserving $\mat... |
gr-qc/9608043 | Luis Lehner | Simonetta Frittelli, Luis Lehner, Carlo Rovelli (Univ. of Pittsburgh) | The complete spectrum of the area from recoupling theory in loop quantum
gravity | typos corrected in eqn.(21). Latex with IOP and epsf styles, 1 figure
(eps postscript file), 12 pages. To appear in Class. Quantum Grav | Class.Quant.Grav. 13 (1996) 2921-2932 | 10.1088/0264-9381/13/11/008 | null | gr-qc | null | We compute the complete spectrum of the area operator in the loop
representation of quantum gravity, using recoupling theory. This result extends
previous derivations, which did not include the ``degenerate'' sector, and
agrees with the recently computed spectrum of the connection-representation
area operator.
| [
{
"created": "Fri, 16 Aug 1996 18:16:35 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Aug 1996 14:34:27 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Frittelli",
"Simonetta",
"",
"Univ. of Pittsburgh"
],
[
"Lehner",
"Luis",
"",
"Univ. of Pittsburgh"
],
[
"Rovelli",
"Carlo",
"",
"Univ. of Pittsburgh"
]
] | We compute the complete spectrum of the area operator in the loop representation of quantum gravity, using recoupling theory. This result extends previous derivations, which did not include the ``degenerate'' sector, and agrees with the recently computed spectrum of the connection-representation area operator. |
1911.03965 | Sebasti\'an Bahamonde Dr | Sebastian Bahamonde, Ugur Camci | Exact Spherically Symmetric Solutions in Modified Teleparallel gravity | 22 pages; Matches published version in Symmetry | Symmetry 2019, 11(12), 1462 | 10.3390/sym11121462 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Finding spherically symmetric exact solutions in modified gravity is usually
a difficult task. In this paper we use the Noether's symmetry approach for a
modified Teleparallel theory of gravity labelled as $f(T,B)$ gravity where $T$
is the scalar torsion and $B$ the boundary term. Using the Noether's theorem,
we were... | [
{
"created": "Sun, 10 Nov 2019 17:24:18 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Nov 2019 14:43:54 GMT",
"version": "v2"
}
] | 2019-12-02 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Camci",
"Ugur",
""
]
] | Finding spherically symmetric exact solutions in modified gravity is usually a difficult task. In this paper we use the Noether's symmetry approach for a modified Teleparallel theory of gravity labelled as $f(T,B)$ gravity where $T$ is the scalar torsion and $B$ the boundary term. Using the Noether's theorem, we were a... |
gr-qc/0310003 | Vladimir Majernik | V. Majernik | Is the Energy Density of the Cosmic Quaternionic Field a Possible
Candidate for the Black Energy? | 9 pages | null | null | null | gr-qc | null | We try to show that the energy density of the cosmic quaternionic field might
be a possible candidate for the black energy.
| [
{
"created": "Wed, 1 Oct 2003 09:24:48 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Majernik",
"V.",
""
]
] | We try to show that the energy density of the cosmic quaternionic field might be a possible candidate for the black energy. |
2007.01326 | Laszlo Arpad Gergely | Cec\'ilia Gergely, Zolt\'an Keresztes, L\'aszl\'o \'Arp\'ad Gergely | Minimally coupled scalar fields as imperfect fluids | 6 pages, to appear in Physical Review D | Phys. Rev. D 102, 024044 (2020) | 10.1103/PhysRevD.102.024044 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the issue of the fluid description of minimally coupled scalar
fields. While in a cosmological setup the interpretation of a time-evolving
scalar field as a perfect fluid is well-understood, the situation is more
intricate when the scalar field is static, but has a spatial gradient, a
situation motivated b... | [
{
"created": "Thu, 2 Jul 2020 18:08:00 GMT",
"version": "v1"
}
] | 2020-07-21 | [
[
"Gergely",
"Cecília",
""
],
[
"Keresztes",
"Zoltán",
""
],
[
"Gergely",
"László Árpád",
""
]
] | We revisit the issue of the fluid description of minimally coupled scalar fields. While in a cosmological setup the interpretation of a time-evolving scalar field as a perfect fluid is well-understood, the situation is more intricate when the scalar field is static, but has a spatial gradient, a situation motivated by ... |
2004.11303 | Joao G. Rosa | Paulo B. Ferraz, Thomas W. Kephart and Jo\~ao G. Rosa | Superradiant pion clouds around primordial black holes | 17 pages, 8 figures | null | 10.1088/1475-7516/2022/07/026 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that highly spinning primordial black holes of mass $M\sim 10^{12}$
kg, potentially born in a matter-dominated era after inflation, can produce
clouds of pions in their vicinity via the superradiant instability, with
densities up to that of nuclear matter. We discuss the electromagnetic
signatures of this pro... | [
{
"created": "Thu, 23 Apr 2020 16:35:53 GMT",
"version": "v1"
}
] | 2022-07-27 | [
[
"Ferraz",
"Paulo B.",
""
],
[
"Kephart",
"Thomas W.",
""
],
[
"Rosa",
"João G.",
""
]
] | We show that highly spinning primordial black holes of mass $M\sim 10^{12}$ kg, potentially born in a matter-dominated era after inflation, can produce clouds of pions in their vicinity via the superradiant instability, with densities up to that of nuclear matter. We discuss the electromagnetic signatures of this proce... |
1911.12431 | Giannis Papagiannopoulos | G. Papagiannopoulos, Pavlina Tsiapi, Spyros Basilakos and Andronikos
Paliathanasis | Dynamics and cosmological evolution in {\Lambda}-varying cosmology | This manuscript has been accepted for publication in the European
Physical Journal C | null | 10.1140/epjc/s10052-019-7600-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the dynamical properties of a large body of varying vacuum
cosmologies for which dark matter interacts with vacuum. In particular,
performing the critical point analysis we investigate the existence and the
stability of cosmological solutions which describe de-Sitter, radiation and
matter dominated eras. We ... | [
{
"created": "Wed, 27 Nov 2019 21:36:46 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Jan 2020 00:15:08 GMT",
"version": "v2"
}
] | 2020-02-19 | [
[
"Papagiannopoulos",
"G.",
""
],
[
"Tsiapi",
"Pavlina",
""
],
[
"Basilakos",
"Spyros",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | We study the dynamical properties of a large body of varying vacuum cosmologies for which dark matter interacts with vacuum. In particular, performing the critical point analysis we investigate the existence and the stability of cosmological solutions which describe de-Sitter, radiation and matter dominated eras. We fi... |
2312.16522 | Francisco F. Lopez-Ruiz | Victor Aldaya, Julio Guerrero and Francisco F. L\'opez-Ruiz | Tachyons in "momentum-space'' representation | 13 pages | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The momentum space associated with "tachyonic particles" proves to be rather
intricate, departing very much from the ordinary dual to Minkowski space
directly parametrized by space-time translations of the Poincar\'e group. In
fact, although described by the constants of motion (Noether invariants)
associated with sp... | [
{
"created": "Wed, 27 Dec 2023 11:01:34 GMT",
"version": "v1"
}
] | 2023-12-29 | [
[
"Aldaya",
"Victor",
""
],
[
"Guerrero",
"Julio",
""
],
[
"López-Ruiz",
"Francisco F.",
""
]
] | The momentum space associated with "tachyonic particles" proves to be rather intricate, departing very much from the ordinary dual to Minkowski space directly parametrized by space-time translations of the Poincar\'e group. In fact, although described by the constants of motion (Noether invariants) associated with spac... |
2109.13260 | Jorma Louko | Keith K. Ng, Chen Zhang, Jorma Louko, Robert B. Mann | A Little Excitement Across the Horizon | 11 pages, 7 figures. v4: Presentational expansion and reorganisation | New J. Phys. 24, 103018 (2022) | 10.1088/1367-2630/ac9547 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | We analyse numerically the transitions in an Unruh-DeWitt detector, coupled
linearly to a massless scalar field, in radial infall in (3+1)-dimensional
Schwarzschild spacetime. In the Hartle-Hawking and Unruh states, the transition
probability attains a small local extremum near the horizon-crossing and is
then modera... | [
{
"created": "Mon, 27 Sep 2021 18:00:04 GMT",
"version": "v1"
},
{
"created": "Sun, 17 Oct 2021 07:13:22 GMT",
"version": "v2"
},
{
"created": "Mon, 2 May 2022 22:13:52 GMT",
"version": "v3"
},
{
"created": "Mon, 24 Oct 2022 13:42:32 GMT",
"version": "v4"
}
] | 2022-10-25 | [
[
"Ng",
"Keith K.",
""
],
[
"Zhang",
"Chen",
""
],
[
"Louko",
"Jorma",
""
],
[
"Mann",
"Robert B.",
""
]
] | We analyse numerically the transitions in an Unruh-DeWitt detector, coupled linearly to a massless scalar field, in radial infall in (3+1)-dimensional Schwarzschild spacetime. In the Hartle-Hawking and Unruh states, the transition probability attains a small local extremum near the horizon-crossing and is then moderate... |
1309.6375 | Shao-Wen Wei | Shao-Wen Wei, Yu-Xiao Liu | Establishing a universal relation between gravitational waves and black
hole lensing | 6 pages, 3 figures | Phys. Rev. D 89, 047502 (2014) | 10.1103/PhysRevD.89.047502 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole lensing and gravitational waves are, respectively, closely
dependent of the property of the lens and radiation source. In this letter, a
universal relation between them is established for a rotating black hole acting
simultaneously as a lens and a gravitational wave source, in an asymptotically
flat spacet... | [
{
"created": "Wed, 25 Sep 2013 00:47:02 GMT",
"version": "v1"
}
] | 2014-02-26 | [
[
"Wei",
"Shao-Wen",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | Black hole lensing and gravitational waves are, respectively, closely dependent of the property of the lens and radiation source. In this letter, a universal relation between them is established for a rotating black hole acting simultaneously as a lens and a gravitational wave source, in an asymptotically flat spacetim... |
2005.01122 | Suratna Das | Suratna Das and Rudnei O. Ramos | On the graceful exit problem in warm inflation | 8 pages, 4 figures, double column, v2: 12 pages, 5 figures, version
matched with the published version in PRD | Phys. Rev. D 103, 123520 (2021) | 10.1103/PhysRevD.103.123520 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A seemingly simple question, how does warm inflation exit gracefully?, has a
more complex answer than in a cold paradigm. It has been highlighted here that
whether warm inflation exits gracefully depends on three independent choices:
The form of the potential, the choice of the warm inflation model (i.e., on the
form... | [
{
"created": "Sun, 3 May 2020 16:05:15 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Jun 2021 16:55:40 GMT",
"version": "v2"
}
] | 2021-06-16 | [
[
"Das",
"Suratna",
""
],
[
"Ramos",
"Rudnei O.",
""
]
] | A seemingly simple question, how does warm inflation exit gracefully?, has a more complex answer than in a cold paradigm. It has been highlighted here that whether warm inflation exits gracefully depends on three independent choices: The form of the potential, the choice of the warm inflation model (i.e., on the form o... |
gr-qc/9512004 | Beverly Berger | Beverly K. Berger | Numerical Investigation of Cosmological Singularities | Based on lectures given at WE-Heraeus-Seminar on Relativity and
Scientific Computing. 24 pages, Latex, 9 figures in separate file BHfigs.uu,
uses psfig.tex | null | null | null | gr-qc | null | We describe a numerical approach to address the BKL conjecture that the
generic cosmological singularity is locally Mixmaster-like. We consider
application of a symplectic PDE solver to three models of increasing
complexity--spatially homogeneous (vacuum) Mixmaster cosmologies where we
compare the symplectic ODE solv... | [
{
"created": "Fri, 1 Dec 1995 21:25:19 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Berger",
"Beverly K.",
""
]
] | We describe a numerical approach to address the BKL conjecture that the generic cosmological singularity is locally Mixmaster-like. We consider application of a symplectic PDE solver to three models of increasing complexity--spatially homogeneous (vacuum) Mixmaster cosmologies where we compare the symplectic ODE solver... |
1302.5695 | Martin Bojowald | Martin Bojowald, Golam Mortuza Hossain, Mikhail Kagan, Casey Tomlin | Quantum matter in quantum space-time | 17 pages, v2: further references and more detailed conclusions | Quantum Matter 2 (2013) 436-443 | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum matter in quantum space-time is discussed using general properties of
energy-conservation laws. As a rather radical conclusion, it is found that
standard methods of differential geometry and quantum field theory on curved
space-time are inapplicable in canonical quantum gravity, even at the level of
effective... | [
{
"created": "Fri, 22 Feb 2013 20:30:10 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Mar 2013 12:24:43 GMT",
"version": "v2"
}
] | 2013-11-13 | [
[
"Bojowald",
"Martin",
""
],
[
"Hossain",
"Golam Mortuza",
""
],
[
"Kagan",
"Mikhail",
""
],
[
"Tomlin",
"Casey",
""
]
] | Quantum matter in quantum space-time is discussed using general properties of energy-conservation laws. As a rather radical conclusion, it is found that standard methods of differential geometry and quantum field theory on curved space-time are inapplicable in canonical quantum gravity, even at the level of effective e... |
gr-qc/0208055 | null | K. Ghosh | Entropy of A Scalar Field In (3 + 1)-dimensional Taub-NUT Space-Time | Revtex, 26 pages, A few sections are added | null | 10.1103/PhysRevD.67.124027 | null | gr-qc | null | In this article we discuss a few aspects of the space-time description of
fields and particles. In sectionn II and III we demonstrate that fields are as
fundamental as particles. In section IV we discuss non-equivalence of the
Schwarzschild coordinates and the Kruskal-Szekeres coordinates. In section V we
discuss tha... | [
{
"created": "Mon, 19 Aug 2002 10:58:52 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Nov 2002 08:06:15 GMT",
"version": "v2"
},
{
"created": "Sun, 19 Nov 2006 18:31:34 GMT",
"version": "v3"
}
] | 2015-06-25 | [
[
"Ghosh",
"K.",
""
]
] | In this article we discuss a few aspects of the space-time description of fields and particles. In sectionn II and III we demonstrate that fields are as fundamental as particles. In section IV we discuss non-equivalence of the Schwarzschild coordinates and the Kruskal-Szekeres coordinates. In section V we discuss that ... |
2205.06240 | Hector O. Silva | Matthew Elley, Hector O. Silva, Helvi Witek, Nicol\'as Yunes | Spin-induced dynamical scalarization, de-scalarization and stealthness
in scalar-Gauss-Bonnet gravity during black hole coalescence | 16 pages, 12 figures | null | 10.1103/PhysRevD.106.044018 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | Particular couplings between a scalar field and the Gauss-Bonnet invariant
lead to spontaneous scalarization of black holes. Here we continue our work on
simulating this phenomenon in the context of binary black hole systems. We
consider a negative coupling for which the black-hole spin plays a major role
in the scal... | [
{
"created": "Thu, 12 May 2022 17:37:17 GMT",
"version": "v1"
}
] | 2022-08-31 | [
[
"Elley",
"Matthew",
""
],
[
"Silva",
"Hector O.",
""
],
[
"Witek",
"Helvi",
""
],
[
"Yunes",
"Nicolás",
""
]
] | Particular couplings between a scalar field and the Gauss-Bonnet invariant lead to spontaneous scalarization of black holes. Here we continue our work on simulating this phenomenon in the context of binary black hole systems. We consider a negative coupling for which the black-hole spin plays a major role in the scalar... |
1306.1177 | Jorge P\'aramos | Orfeu Bertolami, Jorge P\'aramos | Homogeneous spherically symmetric bodies with a nonminimal coupling
between curvature and matter: the choice of the Lagrangian density for matter | 18 pages, 3 figures. Published in General Relativity and Gravitation | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study how a nonminimal coupling between matter and gravity
can modify the structure of a homogeneous spherical body. The physical
relevance of the adopted Lagrangian density is ascertained, with results
obtained for two different choices of the latter.
| [
{
"created": "Wed, 5 Jun 2013 17:15:43 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Nov 2014 19:42:39 GMT",
"version": "v2"
}
] | 2014-11-19 | [
[
"Bertolami",
"Orfeu",
""
],
[
"Páramos",
"Jorge",
""
]
] | In this work we study how a nonminimal coupling between matter and gravity can modify the structure of a homogeneous spherical body. The physical relevance of the adopted Lagrangian density is ascertained, with results obtained for two different choices of the latter. |
1511.05420 | Sijie Gao | Sijie Gao and Xiaobao Wang | A static spherically symmetric thin shell wormhole colliding with a
spherical thin shell | 14 pages, 4 figures | Phys. Rev. D 93, 064027 (2016) | 10.1103/PhysRevD.93.064027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a static spherically symmetric thin shell wormhole collides with
another thin shell consisting of ordinary matter. By employing the geometrical
constraint, which leads to the conservation of energy and momentum, we show
that the state after the collision can be solved from the initial data. In the
low spe... | [
{
"created": "Tue, 17 Nov 2015 14:40:09 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Mar 2016 13:18:32 GMT",
"version": "v2"
}
] | 2016-03-23 | [
[
"Gao",
"Sijie",
""
],
[
"Wang",
"Xiaobao",
""
]
] | We consider a static spherically symmetric thin shell wormhole collides with another thin shell consisting of ordinary matter. By employing the geometrical constraint, which leads to the conservation of energy and momentum, we show that the state after the collision can be solved from the initial data. In the low speed... |
0712.3539 | Stephen Merkowitz | Stephen M. Merkowitz, Philip W. Dabney, Jeffrey C. Livas, Jan F.
McGarry, Gregory A. Neumann, and Thomas W. Zagwodzki | Laser Ranging for Gravitational, Lunar, and Planetary Science | 14 pages, 3 figures, To appear in the International Journal of Modern
Physics D | Int.J.Mod.Phys.D16:2151-2164,2008 | 10.1142/S0218271807011565 | null | gr-qc | null | More precise lunar and Martian ranging will enable unprecedented tests of
Einstein's theory of General Relativity and well as lunar and planetary
science. NASA is currently planning several missions to return to the Moon, and
it is natural to consider if precision laser ranging instruments should be
included. New adv... | [
{
"created": "Thu, 20 Dec 2007 19:22:40 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Merkowitz",
"Stephen M.",
""
],
[
"Dabney",
"Philip W.",
""
],
[
"Livas",
"Jeffrey C.",
""
],
[
"McGarry",
"Jan F.",
""
],
[
"Neumann",
"Gregory A.",
""
],
[
"Zagwodzki",
"Thomas W.",
""
]
] | More precise lunar and Martian ranging will enable unprecedented tests of Einstein's theory of General Relativity and well as lunar and planetary science. NASA is currently planning several missions to return to the Moon, and it is natural to consider if precision laser ranging instruments should be included. New advan... |
1906.05861 | G. S. Bisnovatyi-Kogan | G.S. Bisnovatyi-Kogan and M. Merafina | Two body problem in presence of cosmological constant | 15 pages, 3 figures | null | 10.1142/S0218271819501554 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Kepler two-body problem in presence of the cosmological
constant $\Lambda$. Contrary to the classical case, where finite solutions
exist for any angular momentum of the system $L$, in presence of $\Lambda$
finite solutions exist only in the interval $0<L< L_{lim}(\Lambda)$. The
qualitative picture of ... | [
{
"created": "Thu, 13 Jun 2019 16:09:12 GMT",
"version": "v1"
}
] | 2019-10-23 | [
[
"Bisnovatyi-Kogan",
"G. S.",
""
],
[
"Merafina",
"M.",
""
]
] | We consider the Kepler two-body problem in presence of the cosmological constant $\Lambda$. Contrary to the classical case, where finite solutions exist for any angular momentum of the system $L$, in presence of $\Lambda$ finite solutions exist only in the interval $0<L< L_{lim}(\Lambda)$. The qualitative picture of th... |
gr-qc/9811069 | Esteban Calzetta | Esteban Calzetta | Noise induced inflation | Latex, 15 pages, 3 figures in eps format. To appear in the
Proceedings of the 1998 Peiresq Workshop, M. Castagnino, E. Gunzig and E.
Verdaguer (editors) | Int.J.Theor.Phys.38:2755-2778,1999 | 10.1023/A:1026687527635 | EX112-1 | gr-qc | null | We consider a closed Friedmann-Robertson-Walker Universe driven by the back
reaction from a massless, non-conformally coupled quantum scalar field. We show
that the back-reaction of the quantum field is able to drive the cosmological
scale factor over the barrier of the classical potential so that if the
universe sta... | [
{
"created": "Thu, 19 Nov 1998 20:27:21 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Calzetta",
"Esteban",
""
]
] | We consider a closed Friedmann-Robertson-Walker Universe driven by the back reaction from a massless, non-conformally coupled quantum scalar field. We show that the back-reaction of the quantum field is able to drive the cosmological scale factor over the barrier of the classical potential so that if the universe start... |
gr-qc/0203037 | Masaru Shibata | Masaru Shibata and Koji Uryu | Gravitational Waves from the Merger of Binary Neutron Stars in a Fully
General Relativistic Simulation | 40 pages; pubslihed in Prog. Theor. Phys. 107 (2002), 265 | Prog.Theor.Phys. 107 (2002) 265 | 10.1143/PTP.107.265 | null | gr-qc | null | We performed 3D numerical simulations of the merger of equal-mass binary
neutron stars in full general relativity using a new large scale supercomputer.
We take the typical grid size as (505,505,253) for (x,y,z) and the maximum grid
size as (633,633,317). These grid numbers enable us to put the outer boundaries
of th... | [
{
"created": "Tue, 12 Mar 2002 03:27:50 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Shibata",
"Masaru",
""
],
[
"Uryu",
"Koji",
""
]
] | We performed 3D numerical simulations of the merger of equal-mass binary neutron stars in full general relativity using a new large scale supercomputer. We take the typical grid size as (505,505,253) for (x,y,z) and the maximum grid size as (633,633,317). These grid numbers enable us to put the outer boundaries of the ... |
1410.7698 | Gregory B. Cook | Gregory B. Cook and Maxim Zalutskiy | Gravitational perturbations of the Kerr geometry: High-accuracy study | 30 pages, 24 figures; Corrected typos, including misspelling in
author's name | null | 10.1103/PhysRevD.90.124021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present results from a new code for computing gravitational perturbations
of the Kerr geometry. This new code carefully maintains high precision to allow
us to obtain high-accuracy solutions for the gravitational quasinormal modes of
the Kerr space-time. Part of this new code is an implementation of a spectral
met... | [
{
"created": "Tue, 28 Oct 2014 17:01:09 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Nov 2014 15:15:02 GMT",
"version": "v2"
}
] | 2015-06-23 | [
[
"Cook",
"Gregory B.",
""
],
[
"Zalutskiy",
"Maxim",
""
]
] | We present results from a new code for computing gravitational perturbations of the Kerr geometry. This new code carefully maintains high precision to allow us to obtain high-accuracy solutions for the gravitational quasinormal modes of the Kerr space-time. Part of this new code is an implementation of a spectral metho... |
2304.06481 | Shouvik Sadhukhan Mr | Shouvik Sadhukhan, Alokananda Kar and Surajit Chattopadhyay | A Non-Linear Type Equation of State and Cosmic Fluid Dynamics | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this chapter we have introduced a special type of non-linear equation of
state to discuss the cosmological evolution mechanism. The new equation of
state is a four parameters model which can be represented as
$p=A\rho+B\rho^2-\frac{C}{\rho^{\alpha}}$ where $B=A\beta-\gamma$. The
evolution of universe have been int... | [
{
"created": "Tue, 4 Apr 2023 08:05:49 GMT",
"version": "v1"
}
] | 2023-04-14 | [
[
"Sadhukhan",
"Shouvik",
""
],
[
"Kar",
"Alokananda",
""
],
[
"Chattopadhyay",
"Surajit",
""
]
] | In this chapter we have introduced a special type of non-linear equation of state to discuss the cosmological evolution mechanism. The new equation of state is a four parameters model which can be represented as $p=A\rho+B\rho^2-\frac{C}{\rho^{\alpha}}$ where $B=A\beta-\gamma$. The evolution of universe have been inter... |
gr-qc/0506056 | Richard Woodard | N. C. Tsamis (University of Crete) and R. P. Woodard (University of
Florida) | Dimensionally Regulated Graviton 1-Point Function in de Sitter | 25 pages, LaTeX 2epsilon, uses Axodraw for one figure, revised to add
some references | Annals Phys. 321 (2006) 875-893 | 10.1016/j.aop.2005.08.004 | UFIFT-QG-05-03 | gr-qc astro-ph hep-ph | null | We use dimensional regularization to compute the 1PI 1-point function of
quantum gravity at one loop order in a locally de Sitter background. As with
other computations, the result is a finite constant at this order. It
corresponds to a small positive renormalization of the cosmological constant.
| [
{
"created": "Thu, 9 Jun 2005 14:30:59 GMT",
"version": "v1"
},
{
"created": "Sun, 28 Aug 2005 21:30:04 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Tsamis",
"N. C.",
"",
"University of Crete"
],
[
"Woodard",
"R. P.",
"",
"University of\n Florida"
]
] | We use dimensional regularization to compute the 1PI 1-point function of quantum gravity at one loop order in a locally de Sitter background. As with other computations, the result is a finite constant at this order. It corresponds to a small positive renormalization of the cosmological constant. |
gr-qc/0306053 | Andreas Freise | A. Freise (GEO600 team) | Dual recycling for GEO600 | 6 pages | null | null | null | gr-qc | null | Dual recycling is the combination of signal recycling and power recycling;
both optical techniques improve the shot-noise-limited sensitivity of
interferometric gravitational-wave detectors. In addition, signal recycling can
reduce the loss of light power due to imperfect interference and allows, in
principle, to bea... | [
{
"created": "Thu, 12 Jun 2003 15:55:34 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Freise",
"A.",
"",
"GEO600 team"
]
] | Dual recycling is the combination of signal recycling and power recycling; both optical techniques improve the shot-noise-limited sensitivity of interferometric gravitational-wave detectors. In addition, signal recycling can reduce the loss of light power due to imperfect interference and allows, in principle, to beat ... |
2207.14778 | Marco Antonelli | Lorenzo Gavassino, Marco Antonelli, Brynmor Haskell | Symmetric-hyperbolic quasi-hydrodynamics | 25 pages, 4 figures | Phys. Rev. D 106, 056010 - Published 13 September 2022 | 10.1103/PhysRevD.106.056010 | null | gr-qc hep-th physics.flu-dyn | http://creativecommons.org/licenses/by/4.0/ | We set up a general framework for systematically building and classifying, in
the linear regime, causal and stable dissipative hydrodynamic theories that,
alongside with the usual hydrodynamic modes, also allow for an arbitrary number
of non-hydrodynamic modes with complex dispersion relation (such theories are
often... | [
{
"created": "Fri, 29 Jul 2022 16:41:42 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Sep 2022 10:28:51 GMT",
"version": "v2"
}
] | 2022-09-22 | [
[
"Gavassino",
"Lorenzo",
""
],
[
"Antonelli",
"Marco",
""
],
[
"Haskell",
"Brynmor",
""
]
] | We set up a general framework for systematically building and classifying, in the linear regime, causal and stable dissipative hydrodynamic theories that, alongside with the usual hydrodynamic modes, also allow for an arbitrary number of non-hydrodynamic modes with complex dispersion relation (such theories are often r... |
1102.3490 | Y. M. Cho | Y. M. Cho, S. H. Oh, and Sang-Woo Kim | Abelian Decomposition of General Relativity | null | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the view that Einstein's theory can be interpreted as a gauge theory
of Lorentz group, we decompose the gravitational connection (the gauge
potential of Lorentz group) $\vGm_\mu$ into the restricted connection made of
the potential of the maximal Abelian subgroup $H$ of Lorentz group $G$ and the
valence conn... | [
{
"created": "Thu, 17 Feb 2011 04:05:43 GMT",
"version": "v1"
}
] | 2011-02-18 | [
[
"Cho",
"Y. M.",
""
],
[
"Oh",
"S. H.",
""
],
[
"Kim",
"Sang-Woo",
""
]
] | Based on the view that Einstein's theory can be interpreted as a gauge theory of Lorentz group, we decompose the gravitational connection (the gauge potential of Lorentz group) $\vGm_\mu$ into the restricted connection made of the potential of the maximal Abelian subgroup $H$ of Lorentz group $G$ and the valence connec... |
gr-qc/0404022 | Silke Weinfurtner | Silke E. Ch. Weinfurtner | Simulation of gravitational objects in Bose-Einstein condensates | Diplom-arbeit [Master's thesis, written in German], Technical
University of Munich and Max-Planck-Institut for Quantenoptik in Garching,
129 pages, LaTeX | null | null | null | gr-qc cond-mat.stat-mech | null | In this diplom-arbeit I consider a specific class of "analogue models" of
curved spacetime that are specifically based on the use of Bose-Einstein
condensates.
As is usual in "analogue models", we are primarily interested in the
kinematics of fields and quanta immersed in a curved-space background. We are
not direc... | [
{
"created": "Tue, 6 Apr 2004 12:43:15 GMT",
"version": "v1"
}
] | 2009-09-29 | [
[
"Weinfurtner",
"Silke E. Ch.",
""
]
] | In this diplom-arbeit I consider a specific class of "analogue models" of curved spacetime that are specifically based on the use of Bose-Einstein condensates. As is usual in "analogue models", we are primarily interested in the kinematics of fields and quanta immersed in a curved-space background. We are not directly ... |
2303.14031 | Tanima Duary | Tanima Duary, Narayan Banerjee and Ananda Dasgupta | Signature flip in deceleration parameter: A thermodynamic phase
transition? | Title has been changed | Eur. Phys. J. C 83, 815 (2023) | 10.1140/epjc/s10052-023-11995-w | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the Hayward-Kodama temperature for the apparent horizon, it is found
that matter content in the Universe is not thermodynamically stable, and the
entry to the late accelerated expansion is actually a second order phase
transition. The cosmological model used for the purpose is one that imitates
the $\Lambda$CDM... | [
{
"created": "Fri, 24 Mar 2023 14:44:36 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Sep 2023 06:31:08 GMT",
"version": "v2"
}
] | 2023-09-14 | [
[
"Duary",
"Tanima",
""
],
[
"Banerjee",
"Narayan",
""
],
[
"Dasgupta",
"Ananda",
""
]
] | Using the Hayward-Kodama temperature for the apparent horizon, it is found that matter content in the Universe is not thermodynamically stable, and the entry to the late accelerated expansion is actually a second order phase transition. The cosmological model used for the purpose is one that imitates the $\Lambda$CDM m... |
1910.10091 | Martin Bojowald | Martin Bojowald, Suddhasattwa Brahma, Ding Ding, Michele Ronco | Deformed covariance in spherically symmetric vacuum models of loop
quantum gravity: Consistency in Euclidean and self-dual gravity | 37 pages | Phys. Rev. D 101 (2020) 026001 | 10.1103/PhysRevD.101.026001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Different versions of consistent canonical realizations of hypersurface
deformations of spherically symmetric space-times have been derived in models
of loop quantum gravity, modifying the classical dynamics and sometimes also
the structure of space-time. Based on a canonical version of effective field
theory, this p... | [
{
"created": "Tue, 22 Oct 2019 16:32:02 GMT",
"version": "v1"
}
] | 2020-02-13 | [
[
"Bojowald",
"Martin",
""
],
[
"Brahma",
"Suddhasattwa",
""
],
[
"Ding",
"Ding",
""
],
[
"Ronco",
"Michele",
""
]
] | Different versions of consistent canonical realizations of hypersurface deformations of spherically symmetric space-times have been derived in models of loop quantum gravity, modifying the classical dynamics and sometimes also the structure of space-time. Based on a canonical version of effective field theory, this pap... |
0912.0162 | Tomasz Pawlowski | Wojciech Kaminski, Tomasz Pawlowski | The LQC evolution operator of FRW universe with positive cosmological
constant | RevTex4, 8 pages | Phys.Rev.D81:024014,2010 | 10.1103/PhysRevD.81.024014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The self-adjointness of an evolution operator $\Theta_{\Lambda}$
corresponding to the model of flat FRW universe with massless scalar field and
cosmological constant quantized in the framework of Loop Quantum Cosmology is
studied in the case $\Lambda>0$. It is shown, that for
$\Lambda<\Lambda_c\approx 10.3 \lPl^{-2}$... | [
{
"created": "Tue, 1 Dec 2009 14:32:58 GMT",
"version": "v1"
}
] | 2010-05-12 | [
[
"Kaminski",
"Wojciech",
""
],
[
"Pawlowski",
"Tomasz",
""
]
] | The self-adjointness of an evolution operator $\Theta_{\Lambda}$ corresponding to the model of flat FRW universe with massless scalar field and cosmological constant quantized in the framework of Loop Quantum Cosmology is studied in the case $\Lambda>0$. It is shown, that for $\Lambda<\Lambda_c\approx 10.3 \lPl^{-2}$ t... |
1105.5629 | Andrey Shoom A | Valeri P. Frolov and Andrey A. Shoom | Spinoptics in a stationary spacetime | Added references, 13 pages | Phys.Rev.D84:044026,2011 | 10.1103/PhysRevD.84.044026 | Alberta-Thy-10-11 | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The main goal of the present paper is to study how polarization of photons
affects their motion in a gravitational field created by a rotating massive
compact object. We study propagation of the circularly polarized beams of light
in a stationary gravitational field. We use (3+1)-form of the Maxwell equations
to deri... | [
{
"created": "Fri, 27 May 2011 18:55:07 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Jul 2011 18:11:57 GMT",
"version": "v2"
}
] | 2011-09-08 | [
[
"Frolov",
"Valeri P.",
""
],
[
"Shoom",
"Andrey A.",
""
]
] | The main goal of the present paper is to study how polarization of photons affects their motion in a gravitational field created by a rotating massive compact object. We study propagation of the circularly polarized beams of light in a stationary gravitational field. We use (3+1)-form of the Maxwell equations to derive... |
0903.3264 | Iain Brown | Iain A. Brown, Juliane Behrend and Karim A. Malik | Gauges and Cosmological Backreaction | 13 pages. Updated: reference added, typos corrected, exposition
clarified. Version 3: Replaced with version published by JCAP | JCAP 0911:027,2009 | 10.1088/1475-7516/2009/11/027 | HD-THEP-09-03 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a formalism for spatial averaging in cosmology applicable to
general spacetimes and coordinates, and allowing the easy incorporation of a
wide variety of matter sources. We apply this formalism to a
Friedmann-LeMaitre-Robertson-Walker universe perturbed to second-order and
present the corrections to the ba... | [
{
"created": "Thu, 19 Mar 2009 15:09:31 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Aug 2009 20:25:46 GMT",
"version": "v2"
},
{
"created": "Thu, 26 Nov 2009 14:03:21 GMT",
"version": "v3"
}
] | 2009-12-04 | [
[
"Brown",
"Iain A.",
""
],
[
"Behrend",
"Juliane",
""
],
[
"Malik",
"Karim A.",
""
]
] | We present a formalism for spatial averaging in cosmology applicable to general spacetimes and coordinates, and allowing the easy incorporation of a wide variety of matter sources. We apply this formalism to a Friedmann-LeMaitre-Robertson-Walker universe perturbed to second-order and present the corrections to the back... |
gr-qc/9408043 | Wai Suen | E.S.C. Ching, P.T. Leung, W.M. Suen and K. Young | Quasi-Normal Mode Expansion for Linearized Waves in Gravitational
Systems | 12 pages, WUGRAV-94-9 | Phys.Rev.Lett. 74 (1995) 4588-4591 | 10.1103/PhysRevLett.74.4588 | null | gr-qc | null | The quasinormal modes (QNM's) of gravitational systems modeled by the
Klein-Gordon equation with effective potentials are studied in analogy to the
QNM's of optical cavities. Conditions are given for the QNM's to form a
complete set, i.e., for the Green's function to be expressible as a sum over
QNM's, answering a co... | [
{
"created": "Wed, 31 Aug 1994 23:38:38 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Ching",
"E. S. C.",
""
],
[
"Leung",
"P. T.",
""
],
[
"Suen",
"W. M.",
""
],
[
"Young",
"K.",
""
]
] | The quasinormal modes (QNM's) of gravitational systems modeled by the Klein-Gordon equation with effective potentials are studied in analogy to the QNM's of optical cavities. Conditions are given for the QNM's to form a complete set, i.e., for the Green's function to be expressible as a sum over QNM's, answering a conj... |
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