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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1312.0225 | Vladimir Dzhunushaliev | Vladimir Dzhunushaliev, Vladimir Folomeev, Burkhard Kleihaus and Jutta
Kunz | Modified gravity from the quantum part of the metric | text in Conclusion is added | Eur. Phys. J. C (2014) 74:2743 | 10.1140/epjc/s10052-014-2743-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that if a metric in quantum gravity can be decomposed as a sum of
classical and quantum parts then Einstein quantum gravity looks approximately
like modified gravity with a nonminimal interaction between gravity and matter.
| [
{
"created": "Sun, 1 Dec 2013 13:54:27 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Jan 2014 04:30:17 GMT",
"version": "v2"
}
] | 2014-02-07 | [
[
"Dzhunushaliev",
"Vladimir",
""
],
[
"Folomeev",
"Vladimir",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | It is shown that if a metric in quantum gravity can be decomposed as a sum of classical and quantum parts then Einstein quantum gravity looks approximately like modified gravity with a nonminimal interaction between gravity and matter. |
1010.5438 | Masashi Kimura | Masashi Kimura, Ken-ichi Nakao, Hideyuki Tagoshi | Acceleration of colliding shells around a black hole: Validity of the
test particle approximation in the Banados-Silk-West process | 19 pages, 2 figures, title changed | Phys.Rev.D83:044013,2011 | 10.1103/PhysRevD.83.044013 | OCU-PHYS 335, AP-GR 80, OU-TAP 312 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Banados, Silk and West (BSW) showed that the total energy of two
colliding test particles has no upper limit in their center of mass frame in
the neighborhood of an extreme Kerr black hole, even if these particles were at
rest at infinity in the infinite past. We call this mechanism the BSW mechanism
or BSW... | [
{
"created": "Tue, 26 Oct 2010 15:52:24 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Feb 2011 02:31:35 GMT",
"version": "v2"
}
] | 2011-02-18 | [
[
"Kimura",
"Masashi",
""
],
[
"Nakao",
"Ken-ichi",
""
],
[
"Tagoshi",
"Hideyuki",
""
]
] | Recently, Banados, Silk and West (BSW) showed that the total energy of two colliding test particles has no upper limit in their center of mass frame in the neighborhood of an extreme Kerr black hole, even if these particles were at rest at infinity in the infinite past. We call this mechanism the BSW mechanism or BSW p... |
gr-qc/9906031 | Jorma Louko | Jorma Louko | Single-exterior black holes | 16 pages, LaTeX with cl2emult.cls, 6 eps figures. (Lectures at the
XXXV Karpacz Winter School) | Lect.Notes Phys. 541 (2000) 188-202 | null | AEI 1999-002 | gr-qc hep-th | null | We discuss quantum properties of the single-exterior, geon-type black (and
white) holes that are obtained from the Kruskal spacetime and the spinless
Banados-Teitelboim-Zanelli hole via a quotient construction that identifies the
two exterior regions. For the four-dimensional geon, the Hartle-Hawking type
state of a ... | [
{
"created": "Wed, 9 Jun 1999 16:33:36 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Louko",
"Jorma",
""
]
] | We discuss quantum properties of the single-exterior, geon-type black (and white) holes that are obtained from the Kruskal spacetime and the spinless Banados-Teitelboim-Zanelli hole via a quotient construction that identifies the two exterior regions. For the four-dimensional geon, the Hartle-Hawking type state of a ma... |
gr-qc/0602016 | Jorge P\'aramos | Orfeu Bertolami, Jorge Paramos and Slava G. Turyshev | General Theory of Relativity: Will it survive the next decade? | 36 pages, 2 figures, 1 table. To appear in proceedings of the 359th
WE-Heraeus Seminar on "Lasers, Clocks, and Drag-Free: Technologies for Future
Exploration in Space and Tests of Gravity," ZARM, Bremen, Germany, May
30-June 1, 2005 | "Lasers, Clocks, and Drag-Free: Technologies for Future
Exploration in Space and Tests of Gravity", H. Dittus, C. Laemmerzahl, S.
Turyshev, eds. pp. 27-67 (Springer Verlag, 2006) | null | null | gr-qc | null | The nature of gravity is fundamental to our understanding of our own solar
system, the galaxy and the structure and evolution of the Universe. Einstein's
general theory of relativity is the standard model that is used for almost
ninety years to describe gravitational phenomena on these various scales. We
review the f... | [
{
"created": "Sat, 4 Feb 2006 23:57:18 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Jul 2006 23:07:23 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Bertolami",
"Orfeu",
""
],
[
"Paramos",
"Jorge",
""
],
[
"Turyshev",
"Slava G.",
""
]
] | The nature of gravity is fundamental to our understanding of our own solar system, the galaxy and the structure and evolution of the Universe. Einstein's general theory of relativity is the standard model that is used for almost ninety years to describe gravitational phenomena on these various scales. We review the fou... |
2406.17362 | Phongpichit Channuie | Piyachat Panyasiripan, Fereshteh Felegary, Phongpichit Channuie | Charged Wormhole Solutions in 4D Einstein-Gauss-Bonnet Gravity | V3: 20 pages, typos corrected, references added | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the present work, we construct models of static wormholes within the
framework of 4-dimensional Einstein-Gauss-Bonnet (4D EGB) gravity an
(an)isotropic energy momentum tensor (EMT) and a Maxwell field as supporting
matters for the wormhole geometry assuming a constant redshift function. We
obtain exact spherically... | [
{
"created": "Tue, 25 Jun 2024 08:26:37 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Jun 2024 06:17:20 GMT",
"version": "v2"
},
{
"created": "Tue, 2 Jul 2024 09:11:43 GMT",
"version": "v3"
}
] | 2024-07-03 | [
[
"Panyasiripan",
"Piyachat",
""
],
[
"Felegary",
"Fereshteh",
""
],
[
"Channuie",
"Phongpichit",
""
]
] | In the present work, we construct models of static wormholes within the framework of 4-dimensional Einstein-Gauss-Bonnet (4D EGB) gravity an (an)isotropic energy momentum tensor (EMT) and a Maxwell field as supporting matters for the wormhole geometry assuming a constant redshift function. We obtain exact spherically s... |
2407.20151 | Eneko Aranguren | Eneko Aranguren and Jos\'e A. Font and Nicolas Sanchis-Gual and Ra\"ul
Vera | $I$-Love-$Q$, and $\delta M$ too: The role of the mass in universal
relations of compact stars | 15 pages, 6 figures, 4 tables | null | null | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the study of rotating neutron stars the $I$-Love-$Q$ relations refer to
the existence of various approximate, equation of state-independent relations
involving the moment of inertia, the Love number and the quadrupole moment.
These relations are relevant for observational astrophysics, since they allow
(in theory)... | [
{
"created": "Mon, 29 Jul 2024 16:25:26 GMT",
"version": "v1"
}
] | 2024-07-30 | [
[
"Aranguren",
"Eneko",
""
],
[
"Font",
"José A.",
""
],
[
"Sanchis-Gual",
"Nicolas",
""
],
[
"Vera",
"Raül",
""
]
] | In the study of rotating neutron stars the $I$-Love-$Q$ relations refer to the existence of various approximate, equation of state-independent relations involving the moment of inertia, the Love number and the quadrupole moment. These relations are relevant for observational astrophysics, since they allow (in theory) t... |
1011.1405 | Christopher Eling | Goffredo Chirco, Christopher Eling, and Stefano Liberati | Reversible and Irreversible Spacetime Thermodynamics for General
Brans-Dicke Theories | 12 pages, 1 figure; v2: minor editing to clarify Section III, fixed
typos; v3: fixed typos | Phys.Rev.D83:024032,2011 | 10.1103/PhysRevD.83.024032 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the equations of motion for Palatini F(R) gravity by applying an
entropy balance law T dS= \delta Q+\delta N to the local Rindler wedge that can
be constructed at each point of spacetime. Unlike previous results for metric
F(R), there is no bulk viscosity term in the irreversible flux \delta N. Both
theorie... | [
{
"created": "Fri, 5 Nov 2010 14:29:07 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Nov 2010 12:42:01 GMT",
"version": "v2"
},
{
"created": "Thu, 20 Jan 2011 13:46:51 GMT",
"version": "v3"
}
] | 2015-03-17 | [
[
"Chirco",
"Goffredo",
""
],
[
"Eling",
"Christopher",
""
],
[
"Liberati",
"Stefano",
""
]
] | We derive the equations of motion for Palatini F(R) gravity by applying an entropy balance law T dS= \delta Q+\delta N to the local Rindler wedge that can be constructed at each point of spacetime. Unlike previous results for metric F(R), there is no bulk viscosity term in the irreversible flux \delta N. Both theories ... |
2205.03107 | Ankit Kumar Panda | Ankit Kumar Panda and Victor Roy | Wave Phenomena In General Relativistic Magnetohydrodynamics | 17 pages, 2 figures | null | null | null | gr-qc nucl-th physics.flu-dyn | http://creativecommons.org/licenses/by/4.0/ | Here we study the wave propagation and stability of general relativistic
non-resistive dissipative second-order magnetohydrodynamic equations in curved
space-time. We solve the Boltzmann equation for a system of particles and
antiparticles using the relaxation time approximation and the
Chapman-Enskog-like gradient e... | [
{
"created": "Fri, 6 May 2022 09:43:48 GMT",
"version": "v1"
}
] | 2022-05-09 | [
[
"Panda",
"Ankit Kumar",
""
],
[
"Roy",
"Victor",
""
]
] | Here we study the wave propagation and stability of general relativistic non-resistive dissipative second-order magnetohydrodynamic equations in curved space-time. We solve the Boltzmann equation for a system of particles and antiparticles using the relaxation time approximation and the Chapman-Enskog-like gradient exp... |
gr-qc/0406045 | David Ian Jones | D. I. Jones | Is timing noise important in the gravitational wave detection of neutron
stars? | 9 pages; 2 figures; to appear in Phys. Rev. D | Phys.Rev. D70 (2004) 042002 | 10.1103/PhysRevD.70.042002 | null | gr-qc astro-ph | null | In this paper we ask whether the phenomenon of timing noise long known in
electromagnetic pulsar astronomy is likely to be important in gravitational
wave (GW) observations of spinning-down neutron stars. We find that timing
noise is strong enough to be of importance only in the young pulsars, which
must have larger ... | [
{
"created": "Thu, 10 Jun 2004 21:43:45 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Jones",
"D. I.",
""
]
] | In this paper we ask whether the phenomenon of timing noise long known in electromagnetic pulsar astronomy is likely to be important in gravitational wave (GW) observations of spinning-down neutron stars. We find that timing noise is strong enough to be of importance only in the young pulsars, which must have larger tr... |
2007.01315 | Sebastian Steinhaus | Sebastian Steinhaus | Coarse graining spin foam quantum gravity -- a review | 31 pages, 15 figures, accepted for publication in "Frontiers in
Physics" as part of the issue on "Coarse Graining in Quantum Gravity:
Bridging the Gap between Microscopic Models and Spacetime-Physics " | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In quantum gravity, we envision renormalization as the key tool for bridging
the gap between microscopic models and observable scales. For spin foam quantum
gravity, which is defined on a discretisation akin to lattice gauge theories,
the goal is to derive an effective theory on a coarser discretisation from the
dyna... | [
{
"created": "Thu, 2 Jul 2020 18:00:07 GMT",
"version": "v1"
}
] | 2020-07-06 | [
[
"Steinhaus",
"Sebastian",
""
]
] | In quantum gravity, we envision renormalization as the key tool for bridging the gap between microscopic models and observable scales. For spin foam quantum gravity, which is defined on a discretisation akin to lattice gauge theories, the goal is to derive an effective theory on a coarser discretisation from the dynami... |
gr-qc/9701003 | Masaru Siino | Masaru Siino | Topology of Event Horizon | 26 pages, revtex.sty, 6 figures, Some of assumptions and consequences
are corrected and also grammatical errors are corrected | Phys. Rev. D 58, 104016 (1998) | 10.1103/PhysRevD.58.104016 | KUNS-1428 | gr-qc | null | The topologies of event horizons are investigated. Considering the existence
of the endpoint of the event horizon, it cannot be differentiable. Then there
are the new possibilities of the topology of the event horizon though they are
excluded in smooth event horizons. The relation between the topology of the
event ho... | [
{
"created": "Wed, 1 Jan 1997 11:57:02 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Jul 1997 14:10:54 GMT",
"version": "v2"
}
] | 2016-08-25 | [
[
"Siino",
"Masaru",
""
]
] | The topologies of event horizons are investigated. Considering the existence of the endpoint of the event horizon, it cannot be differentiable. Then there are the new possibilities of the topology of the event horizon though they are excluded in smooth event horizons. The relation between the topology of the event hori... |
1912.02845 | Guillem Dom\`enech | Guillem Dom\`enech, Atsushi Naruko, Misao Sasaki and Christof
Wetterich | Could the black hole singularity be a field singularity? | null | null | 10.1142/S0218271820500261 | TU1084, YITP-19-53 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the wake of interest to find black hole solutions with scalar hair, we
investigate the effects of disformal transformations on static spherically
symmetric space-times with a non-trivial scalar field. In particular, we study
solutions that have a singularity in a given frame, while the action is
regular. We ask if... | [
{
"created": "Thu, 5 Dec 2019 19:18:37 GMT",
"version": "v1"
}
] | 2020-04-22 | [
[
"Domènech",
"Guillem",
""
],
[
"Naruko",
"Atsushi",
""
],
[
"Sasaki",
"Misao",
""
],
[
"Wetterich",
"Christof",
""
]
] | In the wake of interest to find black hole solutions with scalar hair, we investigate the effects of disformal transformations on static spherically symmetric space-times with a non-trivial scalar field. In particular, we study solutions that have a singularity in a given frame, while the action is regular. We ask if t... |
1601.03532 | Matt Visser | Del Rajan (Victoria University of Wellington) and Matt Visser
(Victoria University of Wellington) | Cartesian Kerr-Schild variation on the Newman-Janis ansatz | V1: 10 pages; V2; 10 pages (reformatted); 7 more references; some
additional discussion; legal name change for first author | null | 10.1142/S021827181750167X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Newman-Janis trick is a procedure, (not even really an ansatz), for
obtaining the Kerr spacetime from the Schwarzschild spacetime. This 50 year old
trick continues to generate heated discussion and debate even to this day. Most
of the debate focusses on whether the Newman-Janis procedure can be upgraded to
the st... | [
{
"created": "Thu, 14 Jan 2016 09:52:33 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Feb 2017 21:28:16 GMT",
"version": "v2"
}
] | 2018-01-10 | [
[
"Rajan",
"Del",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | The Newman-Janis trick is a procedure, (not even really an ansatz), for obtaining the Kerr spacetime from the Schwarzschild spacetime. This 50 year old trick continues to generate heated discussion and debate even to this day. Most of the debate focusses on whether the Newman-Janis procedure can be upgraded to the stat... |
gr-qc/0406112 | Dmitri Burlankov E. | D.E. Burlankov | Cosmic Vortexes in Global Time Theory | 8 pages | null | null | null | gr-qc | null | Introduced herein are the foundations of Global Time Theory (GTT) that
further develop the General Relativity (GR). GTT is significantly different
from GR in the general physical concepts, but retains 90% of the mathematical
structure and main results.Meanwhile, description of the cosmos dynamics in GTT
leads to sign... | [
{
"created": "Mon, 28 Jun 2004 09:46:04 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Burlankov",
"D. E.",
""
]
] | Introduced herein are the foundations of Global Time Theory (GTT) that further develop the General Relativity (GR). GTT is significantly different from GR in the general physical concepts, but retains 90% of the mathematical structure and main results.Meanwhile, description of the cosmos dynamics in GTT leads to signif... |
gr-qc/0507067 | Paul R. Anderson | Paul R. Anderson, Ardeshir Eftekharzadeh, B. L. Hu | Self-force on a scalar charge in radial infall from rest using the
Hadamard-WKB expansion | 22 pages, 2 figures, Physical Review D version along with the
corrections given in the erratum | Phys.Rev. D73: 064023, 2006; Erratum: Phys. Rev. D77:089902, 2008 | 10.1103/PhysRevD.73.064023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an analytic method based on the Hadamard-WKB expansion to
calculate the self-force for a particle with scalar charge that undergoes
radial infall in a Schwarzschild spacetime after being held at rest until a
time t = 0. Our result is valid in the case of short duration from the start.
It is possible to use... | [
{
"created": "Fri, 15 Jul 2005 19:58:26 GMT",
"version": "v1"
},
{
"created": "Sun, 17 Jul 2005 18:56:40 GMT",
"version": "v2"
},
{
"created": "Fri, 16 Sep 2005 14:00:10 GMT",
"version": "v3"
},
{
"created": "Fri, 30 Dec 2005 19:26:24 GMT",
"version": "v4"
},
{
"c... | 2009-11-11 | [
[
"Anderson",
"Paul R.",
""
],
[
"Eftekharzadeh",
"Ardeshir",
""
],
[
"Hu",
"B. L.",
""
]
] | We present an analytic method based on the Hadamard-WKB expansion to calculate the self-force for a particle with scalar charge that undergoes radial infall in a Schwarzschild spacetime after being held at rest until a time t = 0. Our result is valid in the case of short duration from the start. It is possible to use t... |
0709.2766 | Mihalis Dafermos | Mihalis Dafermos and Igor Rodnianski | The wave equation on Schwarzschild-de Sitter spacetimes | 48 pages, 5 figures | null | null | null | gr-qc math.AP math.DG | null | We consider solutions to the linear wave equation $\Box_g\phi=0$ on a
non-extremal maximally extended Schwarzschild-de Sitter spacetime arising from
arbitrary smooth initial data prescribed on an arbitrary Cauchy hypersurface.
(In particular, no symmetry is assumed on initial data, and the support of the
solutions ma... | [
{
"created": "Tue, 18 Sep 2007 08:01:45 GMT",
"version": "v1"
}
] | 2007-09-19 | [
[
"Dafermos",
"Mihalis",
""
],
[
"Rodnianski",
"Igor",
""
]
] | We consider solutions to the linear wave equation $\Box_g\phi=0$ on a non-extremal maximally extended Schwarzschild-de Sitter spacetime arising from arbitrary smooth initial data prescribed on an arbitrary Cauchy hypersurface. (In particular, no symmetry is assumed on initial data, and the support of the solutions may ... |
gr-qc/9904020 | Dr. Diego F. Torres | William R. Stoeger, Amina Helmi and Diego F. Torres | Averaging Einstein's Equations: The Linearized Case | 17 pages, prl revtex style | Int.J.Mod.Phys.D16:1001-1026,2007 | 10.1142/S0218271807010535 | null | gr-qc | null | We introduce a simple and straight-forward averaging procedure, which is a
generalization of one which is commonly used in electrodynamics, and show that
it possesses all the characteristics we require for linearized averaging in
general relativity and cosmology -- for weak-field and perturbed FLRW
situations. In par... | [
{
"created": "Wed, 7 Apr 1999 17:17:20 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Stoeger",
"William R.",
""
],
[
"Helmi",
"Amina",
""
],
[
"Torres",
"Diego F.",
""
]
] | We introduce a simple and straight-forward averaging procedure, which is a generalization of one which is commonly used in electrodynamics, and show that it possesses all the characteristics we require for linearized averaging in general relativity and cosmology -- for weak-field and perturbed FLRW situations. In parti... |
gr-qc/9311022 | Andrew Barvinski | A.O.Barvinsky and A.Yu.Kamenshchik | Tunnelling geometries I. Analyticity, unitarity and instantons in
quantum cosmology | 78 pages, latex, figures are not included (available on request by
regular mail), report Alberta Thy-40-93 | Phys.Rev.D50:5093-5114,1994 | 10.1103/PhysRevD.50.5093 | null | gr-qc | null | We present a theory of tunnelling geometries originating from the no-boundary
quantum state of Hartle and Hawking. We reformulate the no-boundary
wavefunction in the representation of true physical variables and calculate it
in the one-loop approximation. For this purpose a special technique is
developed, which reduc... | [
{
"created": "Sun, 14 Nov 1993 04:37:26 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Barvinsky",
"A. O.",
""
],
[
"Kamenshchik",
"A. Yu.",
""
]
] | We present a theory of tunnelling geometries originating from the no-boundary quantum state of Hartle and Hawking. We reformulate the no-boundary wavefunction in the representation of true physical variables and calculate it in the one-loop approximation. For this purpose a special technique is developed, which reduces... |
1108.4928 | Alberto Diez-Tejedor | Alberto Diez-Tejedor and Daniel Sudarsky | Towards a formal description of the collapse approach to the
inflationary origin of the seeds of cosmic structure | 53 pages, no figures. Revision to match the published version | JCAP 07(2012)045 | 10.1088/1475-7516/2012/07/045 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inflation plays a central role in our current understanding of the universe.
According to the standard viewpoint, the homogeneous and isotropic mode of the
inflaton field drove an early phase of nearly exponential expansion of the
universe, while the quantum fluctuations (uncertainties) of the other modes
gave rise t... | [
{
"created": "Wed, 24 Aug 2011 20:00:10 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Aug 2012 17:30:23 GMT",
"version": "v2"
}
] | 2012-08-10 | [
[
"Diez-Tejedor",
"Alberto",
""
],
[
"Sudarsky",
"Daniel",
""
]
] | Inflation plays a central role in our current understanding of the universe. According to the standard viewpoint, the homogeneous and isotropic mode of the inflaton field drove an early phase of nearly exponential expansion of the universe, while the quantum fluctuations (uncertainties) of the other modes gave rise to ... |
1301.6832 | Israel Quiros | Ricardo Garcia-Salcedo, Tame Gonzalez, Israel Quiros, and Michael
Thompson-Montero | QCD ghost dark energy cannot (even roughly) explain the main features of
the accepted cosmological paradigm | 12 pages, 3 eps figures. Remarks on phase space analysis
substantially improved. Minor corrections to the text and title. This version
matches the one published in PRD | Phys.Rev.D88(2013)043008 | 10.1103/PhysRevD.88.043008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the whole phase space of the so called Veneziano/QCD ghost dark
energy models where the dynamics of the inner trapping horizon is ignored and
also the more realistic models where the time-dependence of the horizon is
taken into consideration. We pay special attention to the choice of phase space
variables ... | [
{
"created": "Tue, 29 Jan 2013 05:27:19 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Feb 2013 07:06:24 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Aug 2013 02:27:12 GMT",
"version": "v3"
}
] | 2013-08-30 | [
[
"Garcia-Salcedo",
"Ricardo",
""
],
[
"Gonzalez",
"Tame",
""
],
[
"Quiros",
"Israel",
""
],
[
"Thompson-Montero",
"Michael",
""
]
] | We explore the whole phase space of the so called Veneziano/QCD ghost dark energy models where the dynamics of the inner trapping horizon is ignored and also the more realistic models where the time-dependence of the horizon is taken into consideration. We pay special attention to the choice of phase space variables le... |
1703.04286 | Wadbor Wahlang | Wadbor Wahlang, Piyush A. Jeena and S. Chakrabarti | Quasinormal modes of scalar and Dirac perturbations of Bardeen de-Sitter
black holes | 10+1 pages, 25 figures, Accepted to be published in International
Journal of Modern Physics D | Int. J. Mod. Phys. D 26, 1750160 (2017) | 10.1142/S0218271817501607 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | So far the study of black hole perturbations has been mostly focussed upon
the classical black holes with singularities at the origin and hidden by event
horizon. Compared to that, the regular black holes are a completely new class
of solutions arising out of modification of general theory of relativity by
coupling g... | [
{
"created": "Mon, 13 Mar 2017 08:11:21 GMT",
"version": "v1"
},
{
"created": "Fri, 31 Mar 2017 15:07:04 GMT",
"version": "v2"
},
{
"created": "Thu, 20 Jul 2017 15:37:41 GMT",
"version": "v3"
}
] | 2017-12-07 | [
[
"Wahlang",
"Wadbor",
""
],
[
"Jeena",
"Piyush A.",
""
],
[
"Chakrabarti",
"S.",
""
]
] | So far the study of black hole perturbations has been mostly focussed upon the classical black holes with singularities at the origin and hidden by event horizon. Compared to that, the regular black holes are a completely new class of solutions arising out of modification of general theory of relativity by coupling gra... |
0907.0700 | Evan Ochsner | Alessandra Buonanno, Bala Iyer, Evan Ochsner, Yi Pan and B.S.
Sathyaprakash | Comparison of post-Newtonian templates for compact binary inspiral
signals in gravitational-wave detectors | 27 pages, 8 figures, 4 tables, submitted to PRD | Phys.Rev.D80:084043,2009 | 10.1103/PhysRevD.80.084043 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The two-body dynamics in general relativity has been solved perturbatively
using the post-Newtonian (PN) approximation. The evolution of the orbital phase
and the emitted gravitational radiation are now known to a rather high order up
to O(v^8), v being the characteristic velocity of the binary. The orbital
evolution... | [
{
"created": "Fri, 3 Jul 2009 19:31:53 GMT",
"version": "v1"
}
] | 2009-11-05 | [
[
"Buonanno",
"Alessandra",
""
],
[
"Iyer",
"Bala",
""
],
[
"Ochsner",
"Evan",
""
],
[
"Pan",
"Yi",
""
],
[
"Sathyaprakash",
"B. S.",
""
]
] | The two-body dynamics in general relativity has been solved perturbatively using the post-Newtonian (PN) approximation. The evolution of the orbital phase and the emitted gravitational radiation are now known to a rather high order up to O(v^8), v being the characteristic velocity of the binary. The orbital evolution, ... |
0905.1089 | Kaniel Shmuel | Shmuel Kaniel | An invariant joint alternative, by frames, to Einstein and Schroedinger
equations | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hodge-de Rham Laplacean is an extension to forms of the wave equation. A
frame is a quartuple of 1-forms. The Hodge-de Rham Laplacean is modified to
model it on the frame itself (not on the standard frame $dx$). This modified
Laplacean is invariant. The basic equation is: The modified Laplacean operating
on the f... | [
{
"created": "Thu, 7 May 2009 18:21:11 GMT",
"version": "v1"
}
] | 2009-05-08 | [
[
"Kaniel",
"Shmuel",
""
]
] | The Hodge-de Rham Laplacean is an extension to forms of the wave equation. A frame is a quartuple of 1-forms. The Hodge-de Rham Laplacean is modified to model it on the frame itself (not on the standard frame $dx$). This modified Laplacean is invariant. The basic equation is: The modified Laplacean operating on the fra... |
gr-qc/9808012 | Norimasa Sugiura | Norimasa Sugiura, Ken-ichi Nakao and Tomohiro Harada | Distance-redshift relation in an isotropic inhomogeneous universe:
Spherically symmertic dust-shell universe | latex, 18 pages, 10 figures. Accepted for publication in Physical
Review D | Phys.Rev. D58 (1998) 103504 | 10.1103/PhysRevD.58.103504 | KUNS-1514 | gr-qc | null | The relation between angular diameter distance and redshift in a spherically
symmetric dust-shell universe is studied. This model has large inhomogeneities
of matter distribution on small scales. We have discovered that the relation
agrees with that of an appropriate Friedmann-Lemaitre(FL) model if we set a
``homogen... | [
{
"created": "Wed, 5 Aug 1998 07:08:52 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Sugiura",
"Norimasa",
""
],
[
"Nakao",
"Ken-ichi",
""
],
[
"Harada",
"Tomohiro",
""
]
] | The relation between angular diameter distance and redshift in a spherically symmetric dust-shell universe is studied. This model has large inhomogeneities of matter distribution on small scales. We have discovered that the relation agrees with that of an appropriate Friedmann-Lemaitre(FL) model if we set a ``homogeneo... |
1806.08378 | Merced Montesinos | Diego Gonzalez, Mariano Celada, Merced Montesinos | Polynomial $BF$-type action for general relativity and anti-self-dual
gravity | It matches published version | Phys. Rev. D 97, 124055 (2018) | 10.1103/PhysRevD.97.124055 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report a gravitational $BF$-type action principle propagating two
(complex) degrees of freedom that, besides the gauge connection and the $B$
field, only employs an additional Lagrange multiplier. The action depends on
two parameters and remarkably is polynomial in the $B$ field. For a particular
choice of the inv... | [
{
"created": "Thu, 21 Jun 2018 18:14:11 GMT",
"version": "v1"
}
] | 2018-06-25 | [
[
"Gonzalez",
"Diego",
""
],
[
"Celada",
"Mariano",
""
],
[
"Montesinos",
"Merced",
""
]
] | We report a gravitational $BF$-type action principle propagating two (complex) degrees of freedom that, besides the gauge connection and the $B$ field, only employs an additional Lagrange multiplier. The action depends on two parameters and remarkably is polynomial in the $B$ field. For a particular choice of the invol... |
1911.02380 | Charles Torre | Ian Anderson and Charles Torre | Spacetime Groups | 66 pages, (version 4: some typos corrected) | null | 10.1063/5.0001460 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A spacetime group is a connected 4-dimensional Lie group G endowed with a
left invariant Lorentz metric h and such that the connected component of the
isometry group of h is G itself. The Newman-Penrose formalism is used to give
an algebraic classification of spacetime groups, that is, we determine a
complete list of... | [
{
"created": "Wed, 6 Nov 2019 13:39:29 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Jan 2020 18:47:17 GMT",
"version": "v2"
},
{
"created": "Fri, 10 Apr 2020 14:17:01 GMT",
"version": "v3"
},
{
"created": "Thu, 2 Jul 2020 15:00:47 GMT",
"version": "v4"
}
] | 2020-08-26 | [
[
"Anderson",
"Ian",
""
],
[
"Torre",
"Charles",
""
]
] | A spacetime group is a connected 4-dimensional Lie group G endowed with a left invariant Lorentz metric h and such that the connected component of the isometry group of h is G itself. The Newman-Penrose formalism is used to give an algebraic classification of spacetime groups, that is, we determine a complete list of i... |
0907.0457 | Lee Lindblom | Lee Lindblom | Use and Abuse of the Model Waveform Accuracy Standards | v2: updated to version published in Phys. Rev. D; 10 pages, 7 figures | Phys.Rev.D80:064019,2009 | 10.1103/PhysRevD.80.064019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Accuracy standards have been developed to ensure that the waveforms used for
gravitational-wave data analysis are good enough to serve their intended
purposes. These standards place constraints on certain norms of the
frequency-domain representations of the waveform errors. Examples are given
here of possible misinte... | [
{
"created": "Thu, 2 Jul 2009 18:12:37 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Sep 2009 20:49:59 GMT",
"version": "v2"
}
] | 2009-10-20 | [
[
"Lindblom",
"Lee",
""
]
] | Accuracy standards have been developed to ensure that the waveforms used for gravitational-wave data analysis are good enough to serve their intended purposes. These standards place constraints on certain norms of the frequency-domain representations of the waveform errors. Examples are given here of possible misinterp... |
gr-qc/9612039 | null | Gilles Esposito-Farese | Binary-pulsar tests of strong-field gravity | 18 pages, Latex209, uses epsf.tex to include 8 Postscript figures.
Talk given at the Conference "Pulsar Timing,...", Amsterdam 24-28 Sept 1996 | Proceedings ISBN 90-6984-247-5 (Amsterdam, 1999) p. 13 | null | CPT-96/P.3411 | gr-qc astro-ph | null | This talk is based on my work in collaboration with Thibault Damour since
1991. Unified theories, like superstrings, predict the existence of scalar
partners to the graviton. Such theories of gravity can be very close to general
relativity in weak-field conditions (solar-system experiments), but can deviate
significa... | [
{
"created": "Mon, 16 Dec 1996 14:59:51 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Esposito-Farese",
"Gilles",
""
]
] | This talk is based on my work in collaboration with Thibault Damour since 1991. Unified theories, like superstrings, predict the existence of scalar partners to the graviton. Such theories of gravity can be very close to general relativity in weak-field conditions (solar-system experiments), but can deviate significant... |
2205.06561 | Hassan Firouzjahi | Hassan Firouzjahi | Cosmological Constant and Vacuum Zero Point Energy in Black Hole
Backgrounds | v3, typos corrected. v2, discussions improved, matches published
version. 27 pages, 3 figures | null | 10.1103/PhysRevD.106.045015 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the quantum vacuum zero point energy in the Schwarzschild black hole
as well as in the Nariai limit of the dS-Schwarzschild backgrounds. We show
that the regularized vacuum energy density near the black hole and also in the
Nariai setup match exactly with the corresponding value in the flat background,
scali... | [
{
"created": "Fri, 13 May 2022 11:24:12 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Sep 2022 16:17:39 GMT",
"version": "v2"
},
{
"created": "Tue, 20 Dec 2022 18:39:37 GMT",
"version": "v3"
}
] | 2022-12-21 | [
[
"Firouzjahi",
"Hassan",
""
]
] | We study the quantum vacuum zero point energy in the Schwarzschild black hole as well as in the Nariai limit of the dS-Schwarzschild backgrounds. We show that the regularized vacuum energy density near the black hole and also in the Nariai setup match exactly with the corresponding value in the flat background, scaling... |
2403.17454 | Jianbo Lu | Jianbo Lu, Shining Yang, Mou Xu, Liu Yang | Study on high-frequency quasi-periodic oscillations in rotating black
bounce spacetime | 18 pages, 6 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate dynamical effects of particles moving around rotating SV
regular BH and traversable wormholes, and the deviation from Kerr BH. We found
that the rotating SV traversable wormhole spacetime has a closer innermost
stable circular orbit to the central object than Kerr and rotating regular BHs.
Furthermore,... | [
{
"created": "Tue, 26 Mar 2024 07:40:47 GMT",
"version": "v1"
}
] | 2024-03-27 | [
[
"Lu",
"Jianbo",
""
],
[
"Yang",
"Shining",
""
],
[
"Xu",
"Mou",
""
],
[
"Yang",
"Liu",
""
]
] | We investigate dynamical effects of particles moving around rotating SV regular BH and traversable wormholes, and the deviation from Kerr BH. We found that the rotating SV traversable wormhole spacetime has a closer innermost stable circular orbit to the central object than Kerr and rotating regular BHs. Furthermore, t... |
0706.0273 | Hamid Reza Sepangi | B. Vakili and H. R. Sepangi | Generalized uncertainty principle in Bianchi type I quantum cosmology | 8 pages, 3 figures, to appear in PLB | Phys.Lett.B651:79-83,2007 | 10.1016/j.physletb.2007.06.015 | null | gr-qc hep-th | null | We study a quantum Bianchi type I model in which the dynamical variables of
the corresponding minisuperspace obey the generalized Heisenberg algebra. Such
a generalized uncertainty principle has its origin in the existence of a
minimal length suggested by quantum gravity and sting theory. We present
approximate analy... | [
{
"created": "Sat, 2 Jun 2007 14:30:28 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Jun 2007 11:45:27 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Vakili",
"B.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | We study a quantum Bianchi type I model in which the dynamical variables of the corresponding minisuperspace obey the generalized Heisenberg algebra. Such a generalized uncertainty principle has its origin in the existence of a minimal length suggested by quantum gravity and sting theory. We present approximate analyti... |
2207.04066 | Aaron Zimmerman | Sergi Navarro Albalat, Aaron Zimmerman, Matthew Giesler and Mark A.
Scheel | Success of the small mass ratio approximation during the final orbits of
binary black hole simulations | 12 pages (5 pages plus appendix and references), 8 figures, 1 table.
Reflects published version | Phys. Rev. D 107, 084021 (2023) | 10.1103/PhysRevD.107.084021 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Recent studies have shown the surprising effectiveness of the small
mass-ratio approximation (SMR) in modeling the relativistic two-body problem
even at comparable masses. Up to now this effectiveness has been demonstrated
only during inspiral, before the binary transitions into plunge and merger.
Here we examine the... | [
{
"created": "Fri, 8 Jul 2022 18:00:06 GMT",
"version": "v1"
},
{
"created": "Tue, 30 May 2023 20:14:52 GMT",
"version": "v2"
}
] | 2023-06-01 | [
[
"Albalat",
"Sergi Navarro",
""
],
[
"Zimmerman",
"Aaron",
""
],
[
"Giesler",
"Matthew",
""
],
[
"Scheel",
"Mark A.",
""
]
] | Recent studies have shown the surprising effectiveness of the small mass-ratio approximation (SMR) in modeling the relativistic two-body problem even at comparable masses. Up to now this effectiveness has been demonstrated only during inspiral, before the binary transitions into plunge and merger. Here we examine the b... |
0910.5230 | Salvatore Capozziello | S. Capozziello, S. Vignolo | Metric-affine $f(R)$-gravity with torsion: an overview | 10 pages, Grassmann Meeting 2009, Annalen der Physik | Annalen Phys.19:238-248,2010 | 10.1002/andp.201010420 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Torsion and curvature could play a fundamental role in explaining
cosmological dynamics. f(R)-gravity with torsion is an approach aimed to
encompass in a comprehensive scheme all the Dark Side of the Universe (Dark
Energy and Dark Matter). We discuss the field equations in empty space and in
presence of perfect fluid... | [
{
"created": "Tue, 27 Oct 2009 20:23:23 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Capozziello",
"S.",
""
],
[
"Vignolo",
"S.",
""
]
] | Torsion and curvature could play a fundamental role in explaining cosmological dynamics. f(R)-gravity with torsion is an approach aimed to encompass in a comprehensive scheme all the Dark Side of the Universe (Dark Energy and Dark Matter). We discuss the field equations in empty space and in presence of perfect fluid m... |
gr-qc/0006025 | Young-Jai Park | Soon-Tae Hong, Won Tae Kim, Yong-Wan Kim, and Young-Jai Park | Global embeddings of scalar-tensor theories in (2+1)-dimensions | 19 pages, 2 figures | Phys.Rev. D62 (2000) 064021 | 10.1103/PhysRevD.62.064021 | SOGANG-HEP 270/00 | gr-qc | null | We obtain (3+3)- or (3+2)-dimensional global flat embeddings of four
uncharged and charged scalar-tensor theories with the parameters B or L in the
(2+1)-dimensions, which are the non-trivially modified versions of the
Banados-Teitelboim-Zanelli (BTZ) black holes. The limiting cases B=0 or L=0
exactly are reduced to ... | [
{
"created": "Wed, 7 Jun 2000 12:50:41 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Hong",
"Soon-Tae",
""
],
[
"Kim",
"Won Tae",
""
],
[
"Kim",
"Yong-Wan",
""
],
[
"Park",
"Young-Jai",
""
]
] | We obtain (3+3)- or (3+2)-dimensional global flat embeddings of four uncharged and charged scalar-tensor theories with the parameters B or L in the (2+1)-dimensions, which are the non-trivially modified versions of the Banados-Teitelboim-Zanelli (BTZ) black holes. The limiting cases B=0 or L=0 exactly are reduced to th... |
2002.12281 | Iva Stavrov | Noah Benjamin, Will McDermott, Iva Stavrov Allen | On superposition of relativistic point-sources | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The non-linearity of general relativity makes it at least difficult if not
impossible to view a relativistic cloud of matter as being made up of
point-source constituents. Perhaps the most delicate issue to circumnavigate is
the inherent lack of the classical notion of superposition. Even if one were to
believe that ... | [
{
"created": "Thu, 27 Feb 2020 17:45:54 GMT",
"version": "v1"
}
] | 2020-02-28 | [
[
"Benjamin",
"Noah",
""
],
[
"McDermott",
"Will",
""
],
[
"Allen",
"Iva Stavrov",
""
]
] | The non-linearity of general relativity makes it at least difficult if not impossible to view a relativistic cloud of matter as being made up of point-source constituents. Perhaps the most delicate issue to circumnavigate is the inherent lack of the classical notion of superposition. Even if one were to believe that th... |
gr-qc/0305096 | Naoki Seto | Naoki Seto, Jun'Ichi Yokoyama | Probing the equation of state of the early universe with a space laser
interferometer | 10 pages, 1 figure | J.Phys.Soc.Jap. 72 (2003) 3082-3086 | 10.1143/JPSJ.72.3082 | OU-TAP 206 | gr-qc hep-ph | null | We propose a method to probe the equation of state of the early universe and
its evolution, using the stochastic gravitational wave background from
inflation. A small deviation from purely radiation dominated universe ($w=
1/3$) would be clearly imprinted on the gravitational wave spectrum
$\Omega_{GW}(f)$ due to t... | [
{
"created": "Mon, 26 May 2003 04:12:47 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Seto",
"Naoki",
""
],
[
"Yokoyama",
"Jun'Ichi",
""
]
] | We propose a method to probe the equation of state of the early universe and its evolution, using the stochastic gravitational wave background from inflation. A small deviation from purely radiation dominated universe ($w= 1/3$) would be clearly imprinted on the gravitational wave spectrum $\Omega_{GW}(f)$ due to the n... |
2110.13936 | Saqib Hussain | Azeem Nazar, Saqib Hussain, Adnan Aslam, Takasar Hussain, Muhammad
Ozair | Charged particle dynamics in the vicinity of black hole from
vector-tensor theory of gravity immersed in an external magnetic field | 10 pages | Results in Physics, Volume 14, September 2019, 102418 | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The dynamics of charged particle in the vicinity of event horizon of a
rotating charged black hole (BH) with gravitomagnetic charge from a class of
vector-tensor theories of modified gravity immersed in an axially symmetric
magnetic field (Bfield) has been studied. The presence of Bfield reduces the
radii of innermos... | [
{
"created": "Tue, 26 Oct 2021 18:05:47 GMT",
"version": "v1"
}
] | 2021-10-28 | [
[
"Nazar",
"Azeem",
""
],
[
"Hussain",
"Saqib",
""
],
[
"Aslam",
"Adnan",
""
],
[
"Hussain",
"Takasar",
""
],
[
"Ozair",
"Muhammad",
""
]
] | The dynamics of charged particle in the vicinity of event horizon of a rotating charged black hole (BH) with gravitomagnetic charge from a class of vector-tensor theories of modified gravity immersed in an axially symmetric magnetic field (Bfield) has been studied. The presence of Bfield reduces the radii of innermost ... |
1002.3436 | Vadim Varlamov | V. V. Varlamov | Group averaging for de Sitter free fields in terms of hyperspherical
functions | 10 pages | Theor. Math. Phys. 164(3): 1230-1236 (2010) | 10.1007/s11232-010-0105-4 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the convergence of inner products of free fields over the
homogeneous spaces of the de Sitter group and show that the convergence of
inner products in the of $N$-particle states is defined by the asymptotic
behavior of hypergeometric functions. We calculate the inner product for
two-particle states on the fo... | [
{
"created": "Thu, 18 Feb 2010 07:20:59 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Jun 2011 15:26:08 GMT",
"version": "v2"
}
] | 2015-05-18 | [
[
"Varlamov",
"V. V.",
""
]
] | We study the convergence of inner products of free fields over the homogeneous spaces of the de Sitter group and show that the convergence of inner products in the of $N$-particle states is defined by the asymptotic behavior of hypergeometric functions. We calculate the inner product for two-particle states on the four... |
gr-qc/9812006 | Matthias Arnsdorf | M. Arnsdorf and R. S. Garcia | Existence of Spinorial States in Pure Loop Quantum Gravity | 26 pages, 6 figures. Changes made to section 2 and Lemma 1 | Class.Quant.Grav. 16 (1999) 3405-3418 | 10.1088/0264-9381/16/10/326 | Imperial/TP/98-99/16 | gr-qc | null | We demonstrate the existence of spinorial states in a theory of canonical
quantum gravity without matter. This should be regarded as evidence towards the
conjecture that bound states with particle properties appear in association
with spatial regions of non-trivial topology. In asymptotically trivial general
relativi... | [
{
"created": "Tue, 1 Dec 1998 17:35:59 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Jan 1999 16:52:13 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Arnsdorf",
"M.",
""
],
[
"Garcia",
"R. S.",
""
]
] | We demonstrate the existence of spinorial states in a theory of canonical quantum gravity without matter. This should be regarded as evidence towards the conjecture that bound states with particle properties appear in association with spatial regions of non-trivial topology. In asymptotically trivial general relativity... |
1909.03842 | Nils Alex | Nils Alex and Tobias Reinhart | Covariant constructive gravity: A step-by-step guide towards alternative
theories of gravity | 31 pages, 3 figures, revised version for journal submission | Phys. Rev. D 101, 084025 (2020) | 10.1103/PhysRevD.101.084025 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a step-by-step manual for the construction of alternative theories
of gravity, perturbatively as well as nonperturbatively. The construction is
guided by no more than two fundamental principles that we impose on the
gravitational dynamics: invariance under spacetime diffeomorphisms and causal
compatibility... | [
{
"created": "Mon, 9 Sep 2019 13:20:03 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Sep 2019 17:46:19 GMT",
"version": "v2"
},
{
"created": "Mon, 21 Sep 2020 17:45:29 GMT",
"version": "v3"
}
] | 2020-09-22 | [
[
"Alex",
"Nils",
""
],
[
"Reinhart",
"Tobias",
""
]
] | We propose a step-by-step manual for the construction of alternative theories of gravity, perturbatively as well as nonperturbatively. The construction is guided by no more than two fundamental principles that we impose on the gravitational dynamics: invariance under spacetime diffeomorphisms and causal compatibility w... |
gr-qc/0508058 | Simon Dawson | S. P. Dawson | A quantum weak energy inequality for the Dirac field in two-dimensional
flat spacetime | Version published in Classical and Quantum Gravity. 7 pages, 1 figure | Class.Quant.Grav. 23 (2006) 287-293 | 10.1088/0264-9381/23/1/014 | null | gr-qc | null | Fewster and Mistry have given an explicit, non-optimal quantum weak energy
inequality that constrains the smeared energy density of Dirac fields in
Minkowski spacetime. Here, their argument is adapted to the case of flat,
two-dimensional spacetime. The non-optimal bound thereby obtained has the same
order of magnitud... | [
{
"created": "Mon, 15 Aug 2005 12:35:55 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Dec 2005 20:27:41 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Dawson",
"S. P.",
""
]
] | Fewster and Mistry have given an explicit, non-optimal quantum weak energy inequality that constrains the smeared energy density of Dirac fields in Minkowski spacetime. Here, their argument is adapted to the case of flat, two-dimensional spacetime. The non-optimal bound thereby obtained has the same order of magnitude,... |
2005.04027 | Maxime Jacquet | Maxime J Jacquet and Silke Weinfurtner and Friedrich Koenig | The next generation of analogue gravity experiments | Accepted for publication. Introduction article to a special issue of
Philosophical Transactions of the Royal Society A on Analogue Gravity.
Follows on the Scientific Discussion meeting
(https://royalsociety.org/science-events-and-lectures/2019/12/analogue-gravity/)
at the Royal Society in December 2019. 9 pages... | null | 10.1098/rsta.2019.0239 | null | gr-qc cond-mat.other quant-ph | http://creativecommons.org/licenses/by-nc-sa/4.0/ | This article is an introduction for a theme issue following a Scientific
Discussion Meeting on \emph{The next generation of analogue gravity
experiments} held at the Royal Society in December 2019. This theme issue
comprises a collection of recent advances of the research programme, as well as
their philosophical imp... | [
{
"created": "Thu, 7 May 2020 08:04:47 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Jun 2020 13:44:17 GMT",
"version": "v2"
}
] | 2020-07-21 | [
[
"Jacquet",
"Maxime J",
""
],
[
"Weinfurtner",
"Silke",
""
],
[
"Koenig",
"Friedrich",
""
]
] | This article is an introduction for a theme issue following a Scientific Discussion Meeting on \emph{The next generation of analogue gravity experiments} held at the Royal Society in December 2019. This theme issue comprises a collection of recent advances of the research programme, as well as their philosophical impli... |
2103.05289 | Thomas Mieling | Thomas Mieling | The Response of Optical Fibres to Gravitational Waves | 36 pages, 1 figure | Class. Quantum Grav. 38 155006 (2021) | 10.1088/1361-6382/ac0b2f | null | gr-qc physics.optics | http://creativecommons.org/licenses/by/4.0/ | The response of optical fibre modes to plane gravitational waves of low
frequency is computed. By solving perturbatively the Maxwell equations for
step-index optical fibres in a gravitational wave background and implementing
appropriate boundary conditions to describe single-mode fibres, explicit
formulae for the per... | [
{
"created": "Tue, 9 Mar 2021 08:30:31 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Jun 2021 15:50:14 GMT",
"version": "v2"
}
] | 2021-07-16 | [
[
"Mieling",
"Thomas",
""
]
] | The response of optical fibre modes to plane gravitational waves of low frequency is computed. By solving perturbatively the Maxwell equations for step-index optical fibres in a gravitational wave background and implementing appropriate boundary conditions to describe single-mode fibres, explicit formulae for the pertu... |
2206.04601 | Fabian L\'aszl\'o Konstantin Wagner | Fabian Wagner | Reinterpreting deformed Heisenberg algebras | v2 Error corrected, sections added, conclusions modified v3 One
sentence removed, published version, 9 pages, no figures | The European Physical Journal C 83, 154 (2023) | 10.1140/epjc/s10052-023-11298-0 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Minimal and maximal uncertainties of position measurements are widely
considered possible hallmarks of low-energy quantum as well as classical
gravity. While General Relativity describes interactions in terms of spatial
curvature, its quantum analogue may also extend to the realm of curved momentum
space as suggested... | [
{
"created": "Thu, 9 Jun 2022 16:39:47 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Aug 2022 06:59:00 GMT",
"version": "v2"
},
{
"created": "Wed, 22 Mar 2023 07:56:19 GMT",
"version": "v3"
}
] | 2023-03-23 | [
[
"Wagner",
"Fabian",
""
]
] | Minimal and maximal uncertainties of position measurements are widely considered possible hallmarks of low-energy quantum as well as classical gravity. While General Relativity describes interactions in terms of spatial curvature, its quantum analogue may also extend to the realm of curved momentum space as suggested, ... |
gr-qc/0306083 | Edward Witten | Edward Witten | A Note On The Chern-Simons And Kodama Wavefunctions | 10 pp | null | null | null | gr-qc | null | Yang-Mills theory in four dimensions formally admits an exact Chern-Simons
wavefunction. It is an eigenfunction of the quantum Hamiltonian with zero
energy. It is known to be unphysical for a variety of reasons, but it is still
interesting to understand what it describes. We show that in expanding around
this state, ... | [
{
"created": "Wed, 18 Jun 2003 15:21:30 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jun 2003 12:21:39 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Witten",
"Edward",
""
]
] | Yang-Mills theory in four dimensions formally admits an exact Chern-Simons wavefunction. It is an eigenfunction of the quantum Hamiltonian with zero energy. It is known to be unphysical for a variety of reasons, but it is still interesting to understand what it describes. We show that in expanding around this state, po... |
2406.01508 | Georgios Antoniou | Georgios Antoniou | Quasinormal modes of hairy black holes in shift-symmetric theories | 14 pages, 6 figures, 2 tables | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Alternative theories of gravity may be put to the test by making use of
gravitational wave observations. Scalar-tensor theories provide a relatively
simple framework that allows for compact object solutions with characteristics
different from those of their general relativity counterparts. In
shift-symmetric theories... | [
{
"created": "Mon, 3 Jun 2024 16:38:30 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Aug 2024 08:36:22 GMT",
"version": "v2"
}
] | 2024-08-15 | [
[
"Antoniou",
"Georgios",
""
]
] | Alternative theories of gravity may be put to the test by making use of gravitational wave observations. Scalar-tensor theories provide a relatively simple framework that allows for compact object solutions with characteristics different from those of their general relativity counterparts. In shift-symmetric theories, ... |
0709.1403 | Giampiero Esposito Dr. | Giampiero Esposito, Claudio Rubano, Paolo Scudellaro | Spherically symmetric ADM gravity with variable G and Lambda(c) | 16 pages, 2 figures. The presentation has been improved in all
sections | Class.Quant.Grav.24:6255-6266,2007 | 10.1088/0264-9381/24/24/008 | DSF 2007/28 | gr-qc | null | This paper investigates the Arnowitt--Deser--Misner (hereafter ADM) form of
spherically symmetric gravity with variable Newton parameter G and cosmological
term Lambda(c). The Newton parameter is here treated as a dynamical variable,
rather than being merely an external parameter as in previous work on closely
relate... | [
{
"created": "Mon, 10 Sep 2007 14:33:02 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Oct 2007 16:50:18 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Esposito",
"Giampiero",
""
],
[
"Rubano",
"Claudio",
""
],
[
"Scudellaro",
"Paolo",
""
]
] | This paper investigates the Arnowitt--Deser--Misner (hereafter ADM) form of spherically symmetric gravity with variable Newton parameter G and cosmological term Lambda(c). The Newton parameter is here treated as a dynamical variable, rather than being merely an external parameter as in previous work on closely related ... |
gr-qc/0109076 | Carlos Augusto Romero Filho | F. Dahia and C. Romero | The embedding of the spacetime in five dimensions: an extension of
Campbell-Magaard theorem | 22pages, Revtex | J.Math.Phys. 43 (2002) 5804-5814 | 10.1063/1.1507824 | null | gr-qc | null | We extend Campbell-Magaard embedding theorem by proving that any
n-dimensional semi-Riemannian manifold can be locally embedded in an
(n+1)-dimensional Einstein space. We work out some examples of application of
the theorem and discuss its relevance in the context of modern
higher-dimensional spacetime theories.
| [
{
"created": "Fri, 21 Sep 2001 21:33:43 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Sep 2001 20:12:56 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Dahia",
"F.",
""
],
[
"Romero",
"C.",
""
]
] | We extend Campbell-Magaard embedding theorem by proving that any n-dimensional semi-Riemannian manifold can be locally embedded in an (n+1)-dimensional Einstein space. We work out some examples of application of the theorem and discuss its relevance in the context of modern higher-dimensional spacetime theories. |
gr-qc/9610052 | Wang Anzhong | A.Z. Wang, M.F.A. da Silva, and N.O. Santos | On parameters of the Levi-Civita solution | Latex, no figures | Class.Quant.Grav. 14 (1997) 2417-2423 | 10.1088/0264-9381/14/8/033 | null | gr-qc | null | The Levi-Civita (LC) solution is matched to a cylindrical shell of an
anisotropic fluid. The fluid satisfies the energy conditions when the mass
parameter $\sigma$ is in the range $0 \le \sigma \le 1$. The mass per unit
length of the shell is given explicitly in terms of $\sigma$, which has a
finite maximum. The rele... | [
{
"created": "Wed, 23 Oct 1996 12:53:13 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Wang",
"A. Z.",
""
],
[
"da Silva",
"M. F. A.",
""
],
[
"Santos",
"N. O.",
""
]
] | The Levi-Civita (LC) solution is matched to a cylindrical shell of an anisotropic fluid. The fluid satisfies the energy conditions when the mass parameter $\sigma$ is in the range $0 \le \sigma \le 1$. The mass per unit length of the shell is given explicitly in terms of $\sigma$, which has a finite maximum. The releva... |
2107.07126 | Lorenzo Iorio | Lorenzo Iorio | On the 2PN periastron precession of the Double Pulsar PSR J0737-3039A/B | LaTex2e, 16 pages, 2 figures, no tables | Universe 2021, 7(11), 443 | 10.3390/universe7110443 | null | gr-qc physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the post-Keplerian (PK) parameters determined in timing analyses of
several binary pulsars is the fractional periastron advance per orbit
$k^\mathrm{PK}$. Along with other PK parameters, it is used in testing general
relativity once it is translated into the periastron precession
$\dot\omega^\mathrm{PK}$. It w... | [
{
"created": "Thu, 15 Jul 2021 05:10:32 GMT",
"version": "v1"
}
] | 2021-11-18 | [
[
"Iorio",
"Lorenzo",
""
]
] | One of the post-Keplerian (PK) parameters determined in timing analyses of several binary pulsars is the fractional periastron advance per orbit $k^\mathrm{PK}$. Along with other PK parameters, it is used in testing general relativity once it is translated into the periastron precession $\dot\omega^\mathrm{PK}$. It was... |
1507.00330 | Alessio Belenchia | Alessio Belenchia, Dionigi M.T. Benincasa, Antonino Marciano, Leonardo
Modesto | Spectral Dimension from Nonlocal Dynamics on Causal Sets | 7 pages, 2 figures, version accepted for publication in Phys. Rev. D | Phys. Rev. D 93, 044017 (2016) | 10.1103/PhysRevD.93.044017 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the spectral dimension obtained from non-local continuum
d'Alembertians derived from causal sets. We find a universal dimensional
reduction to 2 dimensions, in all dimensions. We conclude by discussing the
validity and relevance of our results within the broader context of quantum
field theories based ... | [
{
"created": "Wed, 1 Jul 2015 19:50:26 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Jan 2016 17:49:40 GMT",
"version": "v2"
}
] | 2016-02-17 | [
[
"Belenchia",
"Alessio",
""
],
[
"Benincasa",
"Dionigi M. T.",
""
],
[
"Marciano",
"Antonino",
""
],
[
"Modesto",
"Leonardo",
""
]
] | We investigate the spectral dimension obtained from non-local continuum d'Alembertians derived from causal sets. We find a universal dimensional reduction to 2 dimensions, in all dimensions. We conclude by discussing the validity and relevance of our results within the broader context of quantum field theories based on... |
gr-qc/0203015 | Reg Cahill | Reginald T. Cahill | Process Physics: From Quantum Foam to General Relativity | 26 pages Latex, 1 separate eps file | null | null | null | gr-qc | null | Progress in the new information-theoretic process physics is reported in
which the link to the phenomenology of general relativity is made. In process
physics the fundamental assumption is that reality is to be modelled as
self-organising semantic (or internal or relational) information using a
self-referentially lim... | [
{
"created": "Tue, 5 Mar 2002 04:41:44 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cahill",
"Reginald T.",
""
]
] | Progress in the new information-theoretic process physics is reported in which the link to the phenomenology of general relativity is made. In process physics the fundamental assumption is that reality is to be modelled as self-organising semantic (or internal or relational) information using a self-referentially limit... |
1301.5587 | Philippe Brax | Philippe Brax, Anne-Christine Davis and Jeremy Sakstein | Pulsar Constraints on Screened Modified Gravity | 23 pages, published version | Class. Quantum Grav. 31 (2014) 225001 | 10.1088/0264-9381/31/22/225001 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the rate of energy loss from compact astrophysical objects due
to a scalar field in screened modified gravity models of the chameleon, dilaton
and symmetron types. The cosmological evolution of the field results in a
time-variation of the scalar charge of screened objects implying the emission
of scalar ... | [
{
"created": "Wed, 23 Jan 2013 17:54:47 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Jan 2014 09:19:46 GMT",
"version": "v2"
},
{
"created": "Fri, 25 Jul 2014 11:58:27 GMT",
"version": "v3"
}
] | 2014-10-31 | [
[
"Brax",
"Philippe",
""
],
[
"Davis",
"Anne-Christine",
""
],
[
"Sakstein",
"Jeremy",
""
]
] | We calculate the rate of energy loss from compact astrophysical objects due to a scalar field in screened modified gravity models of the chameleon, dilaton and symmetron types. The cosmological evolution of the field results in a time-variation of the scalar charge of screened objects implying the emission of scalar ra... |
gr-qc/9704053 | Karel Kuchar | J. Bicak (Charles Univ.) and K. Kuchar (Univ. Utah) | Null dust in canonical gravity | 25 pages, REVTEX, no figures | Phys.Rev.D56:4878-4895,1997 | 10.1103/PhysRevD.56.4878 | null | gr-qc | null | We present the Lagrangian and Hamiltonian framework which incorporates null
dust as a source into canonical gravity. Null dust is a generalized Lagrangian
system which is described by six Clebsch potentials of its four-velocity Pfaff
form. The Dirac--ADM decomposition splits these into three canonical
coordinates (th... | [
{
"created": "Fri, 18 Apr 1997 20:28:13 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Bicak",
"J.",
"",
"Charles Univ."
],
[
"Kuchar",
"K.",
"",
"Univ. Utah"
]
] | We present the Lagrangian and Hamiltonian framework which incorporates null dust as a source into canonical gravity. Null dust is a generalized Lagrangian system which is described by six Clebsch potentials of its four-velocity Pfaff form. The Dirac--ADM decomposition splits these into three canonical coordinates (the ... |
1502.00722 | Yen-Kheng Lim | Yen-Kheng Lim | Motion of charged particles around a magnetized/electrified black hole | 28 pages, 12 figures | Phys. Rev. D 91, 024048 (2015) | 10.1103/PhysRevD.91.024048 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Geodesic equations of timelike and null charged particles in the Ernst metric
are studied. We consider two distinct forms of the Ernst solution where the
Maxwell potential represents either a uniform electric or magnetic field.
Circular orbits in various configurations are considered, as well as their
perturbations a... | [
{
"created": "Tue, 3 Feb 2015 03:37:24 GMT",
"version": "v1"
}
] | 2015-02-04 | [
[
"Lim",
"Yen-Kheng",
""
]
] | Geodesic equations of timelike and null charged particles in the Ernst metric are studied. We consider two distinct forms of the Ernst solution where the Maxwell potential represents either a uniform electric or magnetic field. Circular orbits in various configurations are considered, as well as their perturbations and... |
0905.0632 | Adrian Kent | Adrian Kent | Beyond Boundary Conditions: General Cosmological Theories | Published in Particle Physics and the Early Universe, Proceedings of
COSMO-97, L. Roszkowski (ed.), World Scientific, New Jersey (1998) 562-564.} | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Time-symmetric cosmological theories, in which the initial and final states
are arranged to have similar features or are independently fixed, have been
quite extensively discussed in the literature. However, a more general and
perhaps more useful possibility seems, surprisingly, never to have been
considered. Quantum... | [
{
"created": "Tue, 5 May 2009 15:51:21 GMT",
"version": "v1"
}
] | 2012-04-20 | [
[
"Kent",
"Adrian",
""
]
] | Time-symmetric cosmological theories, in which the initial and final states are arranged to have similar features or are independently fixed, have been quite extensively discussed in the literature. However, a more general and perhaps more useful possibility seems, surprisingly, never to have been considered. Quantum c... |
gr-qc/0209051 | Richard Barrett | Chris A. Clarkson and Richard K. Barrett | Covariant Perturbations of Schwarzschild Black Holes | 23 pages, 1 figure, Revtex 4. Submitted to Classical and Quantum
Gravity. Revised version is significantly streamlined with an important error
corrected which simplifies the presentation | Class.Quant.Grav. 20 (2003) 3855-3884 | 10.1088/0264-9381/20/18/301 | null | gr-qc astro-ph hep-th | null | We present a new covariant and gauge-invariant perturbation formalism for
dealing with spacetimes having spherical symmetry (or some preferred spatial
direction) in the background, and apply it to the case of gravitational wave
propagation in a Schwarzschild black hole spacetime. The 1+3 covariant approach
is extende... | [
{
"created": "Tue, 17 Sep 2002 19:11:56 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Nov 2002 09:50:08 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Jun 2003 09:11:03 GMT",
"version": "v3"
}
] | 2009-11-07 | [
[
"Clarkson",
"Chris A.",
""
],
[
"Barrett",
"Richard K.",
""
]
] | We present a new covariant and gauge-invariant perturbation formalism for dealing with spacetimes having spherical symmetry (or some preferred spatial direction) in the background, and apply it to the case of gravitational wave propagation in a Schwarzschild black hole spacetime. The 1+3 covariant approach is extended ... |
gr-qc/0508065 | Alicia M. Sintes | LIGO Scientific Collaboration: B. Abbott, et al | First all-sky upper limits from LIGO on the strength of periodic
gravitational waves using the Hough transform | 22 pages, 21 figures, to be submitted to Phys. Rev. D | Phys.Rev.D72:102004,2005 | 10.1103/PhysRevD.72.102004 | LIGO-P050013-03-R | gr-qc | null | We perform a wide parameter space search for continuous gravitational waves
over the whole sky and over a large range of values of the frequency and the
first spin-down parameter. Our search method is based on the Hough transform,
which is a semi-coherent, computationally efficient, and robust pattern
recognition tec... | [
{
"created": "Tue, 16 Aug 2005 09:22:26 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"LIGO Scientific Collaboration",
"",
""
],
[
"Abbott",
"B.",
""
]
] | We perform a wide parameter space search for continuous gravitational waves over the whole sky and over a large range of values of the frequency and the first spin-down parameter. Our search method is based on the Hough transform, which is a semi-coherent, computationally efficient, and robust pattern recognition techn... |
1103.5272 | Ariel Edery | Benjamin Constantineau and Ariel Edery | Numerical thermodynamic studies of classical gravitational collapse in
3+1 and 4+1 dimensions | 35 pages, 14 figures, to appear in Phys. Rev. D | Phys. Rev. D. 84, 084032 (2011) | 10.1103/PhysRevD.84.084032 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a thermodynamic potential during the classical gravitational
collapse of a 4D (3+1) massless scalar field to a Schwarzschild black hole in
isotropic coordinates. We track numerically the function $F(t)=-dI/dt=-L$,
where $I$ is the total action of matter plus gravitation, $L$ the total
Lagrangian and $t$ is t... | [
{
"created": "Mon, 28 Mar 2011 02:13:16 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Sep 2011 18:28:56 GMT",
"version": "v2"
}
] | 2011-10-21 | [
[
"Constantineau",
"Benjamin",
""
],
[
"Edery",
"Ariel",
""
]
] | We study a thermodynamic potential during the classical gravitational collapse of a 4D (3+1) massless scalar field to a Schwarzschild black hole in isotropic coordinates. We track numerically the function $F(t)=-dI/dt=-L$, where $I$ is the total action of matter plus gravitation, $L$ the total Lagrangian and $t$ is the... |
1102.5202 | Burkhard Zink | Burkhard Zink | HORIZON: Accelerated General Relativistic Magnetohydrodynamics | 18 pages, 10 figures | null | null | null | gr-qc astro-ph.IM physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present Horizon, a new graphics processing unit (GPU)-accelerated code to
solve the equations of general relativistic magnetohydrodynamics in a given
spacetime. We evaluate the code in several test cases, including magnetized
Riemann problems and rapidly rotating neutron stars, and measure the
performance benefits... | [
{
"created": "Fri, 25 Feb 2011 10:09:28 GMT",
"version": "v1"
}
] | 2011-02-28 | [
[
"Zink",
"Burkhard",
""
]
] | We present Horizon, a new graphics processing unit (GPU)-accelerated code to solve the equations of general relativistic magnetohydrodynamics in a given spacetime. We evaluate the code in several test cases, including magnetized Riemann problems and rapidly rotating neutron stars, and measure the performance benefits o... |
1711.09496 | Andre Kuerten | Andr\'e Martorano Kuerten and A. Fernandes-Silva | Axion Electrodynamics from Infeld-van der Waerden formalisms | 15 pages | Modern Physics Letters A, Vol. 33, No. 16 (2018) 1850092 | 10.1142/S021773231850092X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we will explore the spacetime phase structure inside the
Infeld-van der Waerden formalisms, showing that Maxwell's theory in this
scenario leads to an axion-like phase electrodynamics, which suggests that this
phase may originate the axion field.
| [
{
"created": "Mon, 27 Nov 2017 00:43:07 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Jan 2018 16:56:52 GMT",
"version": "v2"
},
{
"created": "Wed, 2 May 2018 00:24:38 GMT",
"version": "v3"
}
] | 2018-05-29 | [
[
"Kuerten",
"André Martorano",
""
],
[
"Fernandes-Silva",
"A.",
""
]
] | In this article we will explore the spacetime phase structure inside the Infeld-van der Waerden formalisms, showing that Maxwell's theory in this scenario leads to an axion-like phase electrodynamics, which suggests that this phase may originate the axion field. |
1601.04112 | Vasilis Oikonomou | S. Nojiri, S.D. Odintsov, V.K. Oikonomou | The bounce universe history from unimodular $F(R)$ gravity | PRD version | Phys. Rev. D 93, 084050 (2016) | 10.1103/PhysRevD.93.084050 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we investigate how to realize various quite well known
cosmological bouncing models in the context of the recently developed
unimodular $F(R)$ gravity. Particularly, we shall study the matter bounce
scenario, the singular bounce, the superbounce and a symmetric bounce scenario.
We present the behavior o... | [
{
"created": "Sat, 16 Jan 2016 01:54:03 GMT",
"version": "v1"
},
{
"created": "Mon, 2 May 2016 17:39:30 GMT",
"version": "v2"
}
] | 2016-05-04 | [
[
"Nojiri",
"S.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this paper we investigate how to realize various quite well known cosmological bouncing models in the context of the recently developed unimodular $F(R)$ gravity. Particularly, we shall study the matter bounce scenario, the singular bounce, the superbounce and a symmetric bounce scenario. We present the behavior of ... |
gr-qc/9411006 | null | J. W. Moffat | Nonsymmetric Gravitational Theory | 11 pages plain TeX. TeX macrofile included. Corrections in formulas | Phys.Lett. B355 (1995) 447-452 | 10.1016/0370-2693(95)00670-G | UTPT-94-28 | gr-qc | null | A new version of nonsymmetric gravitational theory is presented. The field
equations are expanded about the Minkowski metric, giving in lowest order the
linear Einstein field equations and massive Proca field equations for the
antisymmetric field $g_{[\mu\nu]}$. An expansion about an arbitrary Einstein
background met... | [
{
"created": "Wed, 2 Nov 1994 21:55:31 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Nov 1994 19:54:57 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Nov 1994 17:59:46 GMT",
"version": "v3"
}
] | 2009-10-22 | [
[
"Moffat",
"J. W.",
""
]
] | A new version of nonsymmetric gravitational theory is presented. The field equations are expanded about the Minkowski metric, giving in lowest order the linear Einstein field equations and massive Proca field equations for the antisymmetric field $g_{[\mu\nu]}$. An expansion about an arbitrary Einstein background metri... |
gr-qc/0604036 | Mohammad Vahid Takook | H. Khosravi, M. Naseri, S. Rouhani and M.V. Takook | Casimir Effect In Krein Space Quantization | 7 pages, LaTeX | Phys.Lett. B640 (2006) 48-51 | 10.1016/j.physletb.2006.07.027 | null | gr-qc | null | An explicit calculation of Casimir effect through an alternative approach of
field quantization [1, 2], has been presented in this paper. In this method,
the auxiliary negative norm states have been utilized, the modes of which do
not interact with the physical states or real physical world. Naturally these
modes can... | [
{
"created": "Sun, 9 Apr 2006 11:55:14 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Khosravi",
"H.",
""
],
[
"Naseri",
"M.",
""
],
[
"Rouhani",
"S.",
""
],
[
"Takook",
"M. V.",
""
]
] | An explicit calculation of Casimir effect through an alternative approach of field quantization [1, 2], has been presented in this paper. In this method, the auxiliary negative norm states have been utilized, the modes of which do not interact with the physical states or real physical world. Naturally these modes canno... |
1108.0422 | Adriano Contillo | Adriano Contillo, Mark Hindmarsh, Christoph Rahmede | Renormalisation group improvement of scalar field inflation | 17 pages; 2 figures | Phys.Rev. D85 (2012) 043501 | 10.1103/PhysRevD.85.043501 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study quantum corrections to Friedmann-Robertson-Walker cosmology with a
scalar field under the assumption that the dynamics are subject to
renormalisation group improvement. We use the Bianchi identity to relate the
renormalisation group scale to the scale factor and obtain the improved
cosmological evolution equ... | [
{
"created": "Mon, 1 Aug 2011 20:02:03 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Feb 2012 09:58:53 GMT",
"version": "v2"
}
] | 2012-02-21 | [
[
"Contillo",
"Adriano",
""
],
[
"Hindmarsh",
"Mark",
""
],
[
"Rahmede",
"Christoph",
""
]
] | We study quantum corrections to Friedmann-Robertson-Walker cosmology with a scalar field under the assumption that the dynamics are subject to renormalisation group improvement. We use the Bianchi identity to relate the renormalisation group scale to the scale factor and obtain the improved cosmological evolution equat... |
2104.02167 | Igor Bogush M.Sc. | Kirill Kobialko, Igor Bogush and Dmitri Gal'tsov | Killing tensors and photon surfaces in foliated spacetimes | 24 pages, revtex4 | Phys. Rev. D 104, 044009 (2021) | 10.1103/PhysRevD.104.044009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a purely geometric method for constructing a rank two Killing
tensor in a spacetime with a codimension one foliation that lifts the trivial
Killing tensors from slices to the entire manifold. The resulting Killing
tensor can be nontrivial. A deep connection is found between the existence of
such a Killing ... | [
{
"created": "Mon, 5 Apr 2021 21:44:35 GMT",
"version": "v1"
}
] | 2021-08-11 | [
[
"Kobialko",
"Kirill",
""
],
[
"Bogush",
"Igor",
""
],
[
"Gal'tsov",
"Dmitri",
""
]
] | We present a purely geometric method for constructing a rank two Killing tensor in a spacetime with a codimension one foliation that lifts the trivial Killing tensors from slices to the entire manifold. The resulting Killing tensor can be nontrivial. A deep connection is found between the existence of such a Killing te... |
2009.07508 | Chen Songbai | Fen Long, Songbai Chen, Mingzhi Wang, Jiliang Jing | Shadow of a disformal Kerr black hole in quadratic DHOST theories | 13 pages, 5 figures | Eur.Phys. J. C 80, 1180 (2020) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have studied the shadow of a disformal Kerr black hole with an extra
deformation parameter, which belongs to non-stealth rotating solutions in
quadratic Degenerate Higher Order Scalar Tensor (DHOST) theory. Our result show
that the size of the shadow increases with the deformation parameter for the
black hole with... | [
{
"created": "Wed, 16 Sep 2020 07:09:23 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Dec 2020 05:02:55 GMT",
"version": "v2"
}
] | 2020-12-29 | [
[
"Long",
"Fen",
""
],
[
"Chen",
"Songbai",
""
],
[
"Wang",
"Mingzhi",
""
],
[
"Jing",
"Jiliang",
""
]
] | We have studied the shadow of a disformal Kerr black hole with an extra deformation parameter, which belongs to non-stealth rotating solutions in quadratic Degenerate Higher Order Scalar Tensor (DHOST) theory. Our result show that the size of the shadow increases with the deformation parameter for the black hole with a... |
gr-qc/9812058 | Barvinski | A.O.Barvinsky | Open inflation from quantum cosmology with a strong nonminimal coupling | 28 pages, LaTeX | Nucl.Phys. B561 (1999) 159-187 | 10.1016/S0550-3213(99)00472-1 | null | gr-qc hep-th | null | We propose the mechanism of quantum creation of the open Universe in the
observable range of values of $\Omega$. This mechanism is based on the
no-boundary quantum state with the Hawking-Turok instanton applied to the model
with a strong nonminimal coupling of the inflaton field. We develop the slow
roll perturbation... | [
{
"created": "Wed, 16 Dec 1998 22:49:21 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Barvinsky",
"A. O.",
""
]
] | We propose the mechanism of quantum creation of the open Universe in the observable range of values of $\Omega$. This mechanism is based on the no-boundary quantum state with the Hawking-Turok instanton applied to the model with a strong nonminimal coupling of the inflaton field. We develop the slow roll perturbation e... |
2405.08057 | Jenny Wagner | Jenny Wagner | Observables of super-extremal black holes: challenging Cosmic Censorship
to comprehend the Cosmological Constant | Essay for the Gravity Research Foundation 2024, received a honourable
mention | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein's Field Equations have proven applicable across many scales, from
black holes to cosmology. Even the mysterious Cosmological Constant found a
physical interpretation in the so-called ``dark energy'' causing the
accelerated cosmic expansion as inferred from multiple observables. Yet, we
still lack a material ... | [
{
"created": "Mon, 13 May 2024 18:00:00 GMT",
"version": "v1"
}
] | 2024-05-15 | [
[
"Wagner",
"Jenny",
""
]
] | Einstein's Field Equations have proven applicable across many scales, from black holes to cosmology. Even the mysterious Cosmological Constant found a physical interpretation in the so-called ``dark energy'' causing the accelerated cosmic expansion as inferred from multiple observables. Yet, we still lack a material so... |
1411.7975 | Wolfgang Kastaun | Wolfgang Kastaun and Filippo Galeazzi | Properties of hypermassive neutron stars formed in mergers of spinning
binaries | 17 pages, 20 figures Updated to version published in PRD | Phys. Rev. D 91, 064027 (2015) | 10.1103/PhysRevD.91.064027 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present numerical simulations of binary neutron star mergers, comparing
irrotational binaries to binaries of NSs rotating aligned to the orbital
angular momentum. For the first time, we study spinning BNSs employing nuclear
physics equations of state, namely the ones of Lattimer and Swesty as well as
Shen, Horowit... | [
{
"created": "Fri, 28 Nov 2014 19:03:43 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Apr 2015 17:03:35 GMT",
"version": "v2"
}
] | 2015-04-10 | [
[
"Kastaun",
"Wolfgang",
""
],
[
"Galeazzi",
"Filippo",
""
]
] | We present numerical simulations of binary neutron star mergers, comparing irrotational binaries to binaries of NSs rotating aligned to the orbital angular momentum. For the first time, we study spinning BNSs employing nuclear physics equations of state, namely the ones of Lattimer and Swesty as well as Shen, Horowitz,... |
0810.0303 | Arturo Avelino Huerta | Arturo Avelino and Ulises Nucamendi | Constraining a matter-dominated cosmological model with bulk viscosity
proportional to the Hubble parameter | 5 pages, 2 eps figures. Work presented in the III International
Meeting on Gravitation and Cosmology, Morelia, Mexico, May 26-30, 2008.
Submitted to AIP Conference Proceedings of this conference. Related work:
arXiv:0801.1686 | AIP Conf.Proc.1083:1-4,2008 | 10.1063/1.3058568 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present and constrain a cosmological model where the only component is a
pressureless fluid with bulk viscosity as an explanation for the present
accelerated expansion of the universe. We study the particular model of a bulk
viscosity coefficient proportional to the Hubble parameter. The model is
constrained using... | [
{
"created": "Wed, 1 Oct 2008 22:39:07 GMT",
"version": "v1"
}
] | 2009-01-05 | [
[
"Avelino",
"Arturo",
""
],
[
"Nucamendi",
"Ulises",
""
]
] | We present and constrain a cosmological model where the only component is a pressureless fluid with bulk viscosity as an explanation for the present accelerated expansion of the universe. We study the particular model of a bulk viscosity coefficient proportional to the Hubble parameter. The model is constrained using t... |
1611.05764 | Mario Novello | M. Novello and C.E.L. Ducap | A possible interaction between uncharged particles and the
Electromagnetic field | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Maxwell Electrodynamics can be described either in Minkowski space-time or in
a dynamically equivalent way in a curved geometry constructed in terms of the
electromagnetic field. For this the field must have a superior bound limited by
a maximum value of its energy. After showing such geometric equivalence we
investi... | [
{
"created": "Wed, 16 Nov 2016 12:55:55 GMT",
"version": "v1"
}
] | 2016-11-18 | [
[
"Novello",
"M.",
""
],
[
"Ducap",
"C. E. L.",
""
]
] | Maxwell Electrodynamics can be described either in Minkowski space-time or in a dynamically equivalent way in a curved geometry constructed in terms of the electromagnetic field. For this the field must have a superior bound limited by a maximum value of its energy. After showing such geometric equivalence we investiga... |
2106.01769 | Rituparno Goswami | Roger M. Mayala, Rituparno Goswami, Sunil D. Maharaj | Necessity of spacetime shear for cosmological gravitational waves | 8 pages, Revtex 4 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that a general but shear-free perturbation of homogeneous and
isotropic universes are necessarily silent, without any gravitational waves. We
prove this in two steps. First we establish that a shear free perturbation of
these universes are acceleration-free and the fluid flow geodesics of the
background unive... | [
{
"created": "Thu, 3 Jun 2021 11:51:12 GMT",
"version": "v1"
}
] | 2021-06-04 | [
[
"Mayala",
"Roger M.",
""
],
[
"Goswami",
"Rituparno",
""
],
[
"Maharaj",
"Sunil D.",
""
]
] | We show that a general but shear-free perturbation of homogeneous and isotropic universes are necessarily silent, without any gravitational waves. We prove this in two steps. First we establish that a shear free perturbation of these universes are acceleration-free and the fluid flow geodesics of the background univers... |
2105.08108 | Dimiter Hadjimichef | C. A. Z. Vasconcellos, P. O. Hess, D. Hadjimichef, B. Bodmann, M.
Razeira and G. L. Volkmer | Pushing the limits of time beyond the Big Bang singularity: Scenarios
for the branch cut universe | arXiv admin note: substantial text overlap with arXiv:2103.07799 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this contribution we identify two scenarios for the evolutionary branch
cut universe. In the first scenario, the universe evolves continuously from the
negative complex cosmological time sector, prior to a primordial singularity,
to the positive one, circumventing continuously a branch cut, and no primordial
singu... | [
{
"created": "Mon, 17 May 2021 18:36:03 GMT",
"version": "v1"
}
] | 2021-05-19 | [
[
"Vasconcellos",
"C. A. Z.",
""
],
[
"Hess",
"P. O.",
""
],
[
"Hadjimichef",
"D.",
""
],
[
"Bodmann",
"B.",
""
],
[
"Razeira",
"M.",
""
],
[
"Volkmer",
"G. L.",
""
]
] | In this contribution we identify two scenarios for the evolutionary branch cut universe. In the first scenario, the universe evolves continuously from the negative complex cosmological time sector, prior to a primordial singularity, to the positive one, circumventing continuously a branch cut, and no primordial singula... |
1406.7348 | Yoelsy Leyva | Norman Cruz, Samuel Lepe, Yoelsy Leyva, Francisco Pe\~na and Joel
Saavedra | No stable dissipative phantom scenario in the framework of a complete
cosmological dynamics | 10 pages, 5 figures. Misprints corrected to match published version | Phys. Rev. D 90, 083524 (2014) | 10.1103/PhysRevD.90.083524 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the phase space dynamics of a bulk viscosity model in the
Eckart approach for a spatially flat Friedmann-Robertson-Walker universe. We
have included two barotropic fluids and a dark energy component. One of the
barotropic fluids is treated as an imperfect fluid having bulk viscosity,
whereas the other ... | [
{
"created": "Sat, 28 Jun 2014 02:56:26 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Oct 2014 21:09:59 GMT",
"version": "v2"
}
] | 2014-10-29 | [
[
"Cruz",
"Norman",
""
],
[
"Lepe",
"Samuel",
""
],
[
"Leyva",
"Yoelsy",
""
],
[
"Peña",
"Francisco",
""
],
[
"Saavedra",
"Joel",
""
]
] | We investigate the phase space dynamics of a bulk viscosity model in the Eckart approach for a spatially flat Friedmann-Robertson-Walker universe. We have included two barotropic fluids and a dark energy component. One of the barotropic fluids is treated as an imperfect fluid having bulk viscosity, whereas the other co... |
2205.04808 | Priti Gupta | Priti Gupta, Lorenzo Speri, B\'eatrice Bonga, Alvin J.K. Chua,
Takahiro Tanaka | Modeling transient resonances in extreme-mass-ratio inspirals | 18 pages, 14 figures | Phys. Rev. D 106, 104001 (2022) | 10.1103/PhysRevD.106.104001 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Extreme-mass-ratio inspirals are one of the most exciting and promising
target sources for space-based interferometers (such as LISA, TianQin). The
observation of their emitted gravitational waves will offer stringent tests on
general theory of relativity, and provide a wealth of information about the
dense environme... | [
{
"created": "Tue, 10 May 2022 11:18:18 GMT",
"version": "v1"
}
] | 2023-05-22 | [
[
"Gupta",
"Priti",
""
],
[
"Speri",
"Lorenzo",
""
],
[
"Bonga",
"Béatrice",
""
],
[
"Chua",
"Alvin J. K.",
""
],
[
"Tanaka",
"Takahiro",
""
]
] | Extreme-mass-ratio inspirals are one of the most exciting and promising target sources for space-based interferometers (such as LISA, TianQin). The observation of their emitted gravitational waves will offer stringent tests on general theory of relativity, and provide a wealth of information about the dense environment... |
2107.08896 | Donato Bini | Donato Bini, Thibault Damour, Andrea Geralico | Radiative contributions to gravitational scattering | 46 pages; revtex macros used. V2: References added. V3: Minor changes
in the text. V4: Corrected Eqs. 9.9-9.11 by overall signs, corrected Eq. 9.45
and consequent adjustment of related results; Conclusions unchanged | Phys. Rev. D 104, 084031 (2021) | 10.1103/PhysRevD.104.084031 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The linear-order effects of radiation-reaction on the classical scattering of
two point masses, in General Relativity, are derived by a
variation-of-constants method. Explicit expressions for the radiation-reaction
contributions to the changes of 4-momentum during scattering are given to
linear order in the radiative... | [
{
"created": "Mon, 19 Jul 2021 14:09:40 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Aug 2021 07:48:25 GMT",
"version": "v2"
},
{
"created": "Tue, 31 Aug 2021 16:38:01 GMT",
"version": "v3"
},
{
"created": "Mon, 29 Nov 2021 15:41:08 GMT",
"version": "v4"
}
] | 2021-11-30 | [
[
"Bini",
"Donato",
""
],
[
"Damour",
"Thibault",
""
],
[
"Geralico",
"Andrea",
""
]
] | The linear-order effects of radiation-reaction on the classical scattering of two point masses, in General Relativity, are derived by a variation-of-constants method. Explicit expressions for the radiation-reaction contributions to the changes of 4-momentum during scattering are given to linear order in the radiative l... |
gr-qc/0509029 | Thomas Sotiriou | Thomas P. Sotiriou | Unification of inflation and cosmic acceleration in the Palatini
formalism | 5 pages, 2 figures; typos corrected, replaced to match published
version | Phys.Rev. D73 (2006) 063515 | 10.1103/PhysRevD.73.063515 | null | gr-qc astro-ph hep-th | null | A modified model of gravity with additional positive and negative powers of
the scalar curvature, $R$, in the gravitational action is studied. This is done
using the Palatini variational principle. It is demonstrated that using such a
model might prove useful to explain both the early time inflation and the late
time... | [
{
"created": "Thu, 8 Sep 2005 17:37:36 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Dec 2005 11:58:07 GMT",
"version": "v2"
},
{
"created": "Sat, 18 Mar 2006 19:00:22 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Sotiriou",
"Thomas P.",
""
]
] | A modified model of gravity with additional positive and negative powers of the scalar curvature, $R$, in the gravitational action is studied. This is done using the Palatini variational principle. It is demonstrated that using such a model might prove useful to explain both the early time inflation and the late time c... |
gr-qc/0003036 | Tomohiro Harada | Tomohiro Harada, Hideo Iguchi, and Ken-ichi Nakao | Naked Singularity Explosion | 6 pages, 3 figures, Accepted for Publication in Phys. Rev. D as a
Rapid Communication | Phys.Rev.D61:101502,2000 | 10.1103/PhysRevD.61.101502 | null | gr-qc astro-ph hep-th quant-ph | null | It is known that the gravitational collapse of a dust ball results in naked
singularity formation from an initial density profile which is physically
reasonable. In this paper, we show that explosive radiation is emitted during
the formation process of the naked singularity.
| [
{
"created": "Thu, 9 Mar 2000 01:14:35 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Harada",
"Tomohiro",
""
],
[
"Iguchi",
"Hideo",
""
],
[
"Nakao",
"Ken-ichi",
""
]
] | It is known that the gravitational collapse of a dust ball results in naked singularity formation from an initial density profile which is physically reasonable. In this paper, we show that explosive radiation is emitted during the formation process of the naked singularity. |
gr-qc/0508088 | Wade Cherrington | J. Wade Cherrington | Finiteness and Dual Variables for Lorentzian Spin Foam Models | 15 pages, 1 figure | Class.Quant.Grav. 23 (2006) 701-720 | 10.1088/0264-9381/23/3/010 | null | gr-qc | null | We describe here some new results concerning the Lorentzian Barrett-Crane
model, a well-known spin foam formulation of quantum gravity. Generalizing an
existing finiteness result, we provide a concise proof of finiteness of the
partition function associated to all non-degenerate triangulations of
4-manifolds and for ... | [
{
"created": "Sat, 20 Aug 2005 16:48:45 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Sep 2005 02:59:20 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Cherrington",
"J. Wade",
""
]
] | We describe here some new results concerning the Lorentzian Barrett-Crane model, a well-known spin foam formulation of quantum gravity. Generalizing an existing finiteness result, we provide a concise proof of finiteness of the partition function associated to all non-degenerate triangulations of 4-manifolds and for a ... |
2406.12724 | Luis Gabriel Gomez Diaz PhD | Guillermo Palma, Gabriel Gomez and Norman Cruz | Viscous Unified Dark Matter Models Under Scrutiny: Uncovering
Inconsistencies from Dynamical System Analysis | 20 page | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | Viscous unified dark matter models aim to describe the dark sector of the
Universe, as the dark matter fluid itself gives rise to an accelerated
expansion due to a negative bulk viscous pressure. However, in most studies,
radiation is often disregarded as a minor factor in dynamical system analyses,
overlooking wheth... | [
{
"created": "Tue, 18 Jun 2024 15:46:04 GMT",
"version": "v1"
}
] | 2024-06-19 | [
[
"Palma",
"Guillermo",
""
],
[
"Gomez",
"Gabriel",
""
],
[
"Cruz",
"Norman",
""
]
] | Viscous unified dark matter models aim to describe the dark sector of the Universe, as the dark matter fluid itself gives rise to an accelerated expansion due to a negative bulk viscous pressure. However, in most studies, radiation is often disregarded as a minor factor in dynamical system analyses, overlooking whether... |
1106.6260 | Brian Dolan | Brian P. Dolan | Pressure and volume in the first law of black hole thermodynamics | 20 pages, 4 figures, minor typos corrected and references updated in
v3 | Class. Quantum Grav. 28 (2011) 235017 | 10.1088/0264-9381/28/23/235017 | DIAS-STP-11-12 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The mass of a black hole is interpreted, in terms of thermodynamic
potentials, as being the enthalpy, with the pressure given by the cosmological
constant. The volume is then defined as being the Legendre transform of the
pressure and the resulting relation between volume and pressure is explored in
the case of posit... | [
{
"created": "Thu, 30 Jun 2011 15:11:49 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Aug 2011 10:51:45 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Nov 2011 12:53:34 GMT",
"version": "v3"
}
] | 2012-03-07 | [
[
"Dolan",
"Brian P.",
""
]
] | The mass of a black hole is interpreted, in terms of thermodynamic potentials, as being the enthalpy, with the pressure given by the cosmological constant. The volume is then defined as being the Legendre transform of the pressure and the resulting relation between volume and pressure is explored in the case of positiv... |
2107.04651 | Genly Le\'on | Saikat Chakraborty (Yangzhou U. and Intl. Ctr. for Cosmology,
Gujarat), Esteban Gonz\'alez (Aconcagua U., Chile), Genly Leon (Catolica del
Norte U.) and Bin Wang (Shanghai Jiao Tong U.) | Time-averaging axion-like interacting scalar fields models | 35 pages, 7 compound figures | Eur. Phys. J. C 81, 1039 (2021) | 10.1140/epjc/s10052-021-09802-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study a cosmological model inspired in the axionic matter
with two canonical scalar fields $\phi_1$ and $\phi_2$ interacting through a
term added to its potential. Introducing novel dynamical variables, and a
dimensionless time variable, the resulting dynamical system is studied. The
main difficulti... | [
{
"created": "Fri, 9 Jul 2021 19:49:23 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Oct 2021 13:55:39 GMT",
"version": "v2"
},
{
"created": "Sat, 27 Nov 2021 17:37:24 GMT",
"version": "v3"
}
] | 2021-11-30 | [
[
"Chakraborty",
"Saikat",
"",
"Yangzhou U. and Intl. Ctr. for Cosmology,\n Gujarat"
],
[
"González",
"Esteban",
"",
"Aconcagua U., Chile"
],
[
"Leon",
"Genly",
"",
"Catolica del\n Norte U."
],
[
"Wang",
"Bin",
"",
"Shanghai Jiao Tong U."... | In this paper, we study a cosmological model inspired in the axionic matter with two canonical scalar fields $\phi_1$ and $\phi_2$ interacting through a term added to its potential. Introducing novel dynamical variables, and a dimensionless time variable, the resulting dynamical system is studied. The main difficulties... |
1604.04257 | Hermano Velten | Aneta Wojnar and Hermano Velten | Equilibrium and stability of relativistic stars in extended theories of
gravity | Final version to appear in EPJC | Eur. Phys. J. C (2016) 76: 697 | 10.1140/epjc/s10052-016-4549-z | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study static, spherically symmetric equilibrium configurations in extended
theories of gravity (ETG) following the notation introduced by Capozziello et
{\it al}. We calculate the differential equations for the stellar structure in
such theories in a very generic form i.e., the Tolman-Oppenheimer-Volkoff
generaliz... | [
{
"created": "Thu, 14 Apr 2016 18:51:03 GMT",
"version": "v1"
},
{
"created": "Mon, 9 May 2016 21:10:34 GMT",
"version": "v2"
},
{
"created": "Fri, 29 Jul 2016 12:38:10 GMT",
"version": "v3"
},
{
"created": "Sun, 11 Dec 2016 12:25:44 GMT",
"version": "v4"
}
] | 2016-12-22 | [
[
"Wojnar",
"Aneta",
""
],
[
"Velten",
"Hermano",
""
]
] | We study static, spherically symmetric equilibrium configurations in extended theories of gravity (ETG) following the notation introduced by Capozziello et {\it al}. We calculate the differential equations for the stellar structure in such theories in a very generic form i.e., the Tolman-Oppenheimer-Volkoff generalizat... |
gr-qc/9705032 | Jonathan Wilson | J P Wilson (Department of Mathematics, University of Southampton) | Distributional curvature of time-dependent cosmic strings | 11 pages, plain TeX | Class.Quant.Grav. 14 (1997) 3337-3351 | 10.1088/0264-9381/14/12/017 | null | gr-qc | null | Colombeau's theory of generalised functions is used to calculate the
contributions, at the rotation axis, to the distributional curvature for a
time-dependent radiating cosmic string, and hence the mass per unit length of
the string source. This mass per unit length is compared with the mass at null
infinity, giving ... | [
{
"created": "Tue, 13 May 1997 13:17:23 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Wilson",
"J P",
"",
"Department of Mathematics, University of Southampton"
]
] | Colombeau's theory of generalised functions is used to calculate the contributions, at the rotation axis, to the distributional curvature for a time-dependent radiating cosmic string, and hence the mass per unit length of the string source. This mass per unit length is compared with the mass at null infinity, giving ev... |
gr-qc/0306030 | Julio Cesar Fabris | F.G. Alvarenga, A.B. Batista, J.C. Fabris and G.T. Marques | Is the semi-classical analysis valid for extreme black holes? | Latex file, 10 pages. A new section was included. New title, new
references and others minors modifications. To appear in Physics Letters A | Phys.Lett. A320 (2003) 83-94 | 10.1016/j.physleta.2003.11.010 | null | gr-qc hep-th | null | The surface gravity for the extreme Reissner-Nordstr\"om black hole is zero
suggesting that it has a zero temperature. However, the direct evaluation of
the Bogolubov's coefficients, using the standard semi-classical analysis,
indicates that the temperature of the extreme black hole is ill definite: the
Bogolubov's c... | [
{
"created": "Mon, 9 Jun 2003 18:59:03 GMT",
"version": "v1"
},
{
"created": "Sat, 27 Sep 2003 21:58:40 GMT",
"version": "v2"
},
{
"created": "Fri, 14 Nov 2003 17:05:17 GMT",
"version": "v3"
}
] | 2015-06-25 | [
[
"Alvarenga",
"F. G.",
""
],
[
"Batista",
"A. B.",
""
],
[
"Fabris",
"J. C.",
""
],
[
"Marques",
"G. T.",
""
]
] | The surface gravity for the extreme Reissner-Nordstr\"om black hole is zero suggesting that it has a zero temperature. However, the direct evaluation of the Bogolubov's coefficients, using the standard semi-classical analysis, indicates that the temperature of the extreme black hole is ill definite: the Bogolubov's coe... |
1010.5260 | Bernard Kelly | Joan M. Centrella and John G. Baker and Bernard J. Kelly and James R.
van Meter | Black-hole binaries, gravitational waves, and numerical relativity | 54 pages, 42 figures. Some typos corrected & references updated.
Essentially final published version | Rev.Mod.Phys.82:3069(2010) | 10.1103/RevModPhys.82.3069 | null | gr-qc astro-ph.HE math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Understanding the predictions of general relativity for the dynamical
interactions of two black holes has been a long-standing unsolved problem in
theoretical physics. Black-hole mergers are monumental astrophysical events,
releasing tremendous amounts of energy in the form of gravitational radiation,
and are key sou... | [
{
"created": "Mon, 25 Oct 2010 20:48:56 GMT",
"version": "v1"
},
{
"created": "Sat, 27 Nov 2010 19:22:35 GMT",
"version": "v2"
}
] | 2011-09-29 | [
[
"Centrella",
"Joan M.",
""
],
[
"Baker",
"John G.",
""
],
[
"Kelly",
"Bernard J.",
""
],
[
"van Meter",
"James R.",
""
]
] | Understanding the predictions of general relativity for the dynamical interactions of two black holes has been a long-standing unsolved problem in theoretical physics. Black-hole mergers are monumental astrophysical events, releasing tremendous amounts of energy in the form of gravitational radiation, and are key sourc... |
gr-qc/9504030 | null | David Polarski and Alexei A. Starobinsky | Semiclassicality and Decoherence of Cosmological Perturbations | Revised version to appear in Class. Quantum Grav. All prior
conclusions hold. This version contains in particular a Wigner function
calculation | Class.Quant.Grav.13:377-392,1996 | 10.1088/0264-9381/13/3/006 | null | gr-qc astro-ph hep-th quant-ph | null | Transition to the semiclassical behaviour and the decoherence process for
inhomogeneous perturbations generated from the vacuum state during an
inflationary stage in the early Universe are considered both in the Heisenberg
and the Schr\"odinger representations to show explicitly that both approaches
lead to the same ... | [
{
"created": "Thu, 20 Apr 1995 16:08:55 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Jan 1996 19:21:26 GMT",
"version": "v2"
}
] | 2010-11-01 | [
[
"Polarski",
"David",
""
],
[
"Starobinsky",
"Alexei A.",
""
]
] | Transition to the semiclassical behaviour and the decoherence process for inhomogeneous perturbations generated from the vacuum state during an inflationary stage in the early Universe are considered both in the Heisenberg and the Schr\"odinger representations to show explicitly that both approaches lead to the same pr... |
2301.00643 | Bogdan Dimitrov | Bogdan G. Dimitrov (Institute of Nuclear Research and Nuclear
Energetics, Bulgarian Academy of Sciences, Bulgaria, Institute for Advanced
Physical Studies, Sofia Tech Park, Bulgaria) | New methods for analytical calculation of elliptic integrals, applied in
various physical problems | 19 pages, Revtex 4.0; no figures, Talk at the Fourteenth Conference
of the Euro-American Consortium for Promoting the Application of Mathematics
in Technical and Natural Sciences, Albena, Bulgaria, June 22-27, 2022;
prepared for the Proced. of the AIP | null | null | null | gr-qc math-ph math.MP physics.comp-ph | http://creativecommons.org/licenses/by/4.0/ | A short review will be made of elliptic integrals, widely applied in GPS
(Global Positioning System) communications (accounting for General Relativity
Theory-effects), cosmology, Black hole physics and celestial mechanics. Then a
novel analytical method for calculation of zero-order elliptic integrals in the
Legendre... | [
{
"created": "Mon, 26 Dec 2022 20:51:21 GMT",
"version": "v1"
}
] | 2023-01-03 | [
[
"Dimitrov",
"Bogdan G.",
"",
"Institute of Nuclear Research and Nuclear\n Energetics, Bulgarian Academy of Sciences, Bulgaria, Institute for Advanced\n Physical Studies, Sofia Tech Park, Bulgaria"
]
] | A short review will be made of elliptic integrals, widely applied in GPS (Global Positioning System) communications (accounting for General Relativity Theory-effects), cosmology, Black hole physics and celestial mechanics. Then a novel analytical method for calculation of zero-order elliptic integrals in the Legendre f... |
1707.02669 | Lvc Publications | The LIGO Scientific Collaboration and the Virgo Collaboration: B. P.
Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams,
P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Afrough, B. Agarwal,
M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, B.
Allen, G. Allen,... | First low-frequency Einstein@Home all-sky search for continuous
gravitational waves in Advanced LIGO data | null | Phys. Rev. D 96, 122004 (2017) | 10.1103/PhysRevD.96.122004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report results of a deep all-sky search for periodic gravitational waves
from isolated neutron stars in data from the first Advanced LIGO observing run.
This search investigates the low frequency range of Advanced LIGO data, between
20 and 100 Hz, much of which was not explored in initial LIGO. The search was
made... | [
{
"created": "Mon, 10 Jul 2017 01:09:31 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Jul 2017 19:46:53 GMT",
"version": "v2"
}
] | 2017-12-13 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Acernese",
"F.",
""
],
[
"Ackley",
"K.",
... | We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the first Advanced LIGO observing run. This search investigates the low frequency range of Advanced LIGO data, between 20 and 100 Hz, much of which was not explored in initial LIGO. The search was made p... |
1212.3692 | Sergei Rubin | S.G. Rubin (National Research Nuclear University "MEPhI") | Low energy physics and properties of extra space | 4 pages, Talk at the International Conference on Mathematical
Modeling in Physical Sciences September 3-7, 2012 Budapest, Hungary. E-mail:
sergeirubin@list.ru | J. Phys.: Conf. Ser. 410 012152, 2013 | 10.1088/1742-6596/410/1/012152 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The mechanism of low energy physics formation in the framework of
multidimensional gravity is discussed. It is shown that a wide set of
parameters of a primary theory could lead to the observable Universe. Quantum
fluctuations of extra space metric and its consequent classical evolution play
an important role in this... | [
{
"created": "Sat, 15 Dec 2012 15:10:52 GMT",
"version": "v1"
}
] | 2013-02-12 | [
[
"Rubin",
"S. G.",
"",
"National Research Nuclear University \"MEPhI\""
]
] | The mechanism of low energy physics formation in the framework of multidimensional gravity is discussed. It is shown that a wide set of parameters of a primary theory could lead to the observable Universe. Quantum fluctuations of extra space metric and its consequent classical evolution play an important role in this p... |
1007.2459 | Ulises Nucamendi | Freddy Cueva and Ulises Nucamendi | Reconstructing the interaction term between dark matter and dark energy | 6 pages, 2 figures, Talk presented at the Conference "Gravitational
Physics: Testing gravity from submillimeter to cosmic. Playa del Carmen,
Mexico (2009). To appear in Proceedings of the VIII Mexican School on
Gravitation and Mathematical Physics, AIP Conference Proceedings | AIP Conf.Proc.1256:256-261,2010 | 10.1063/1.3473862 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply a parametric reconstruction method to a homogeneous, isotropic and
spatially flat Friedmann-Robertson-Walker (FRW) cosmological model filled of a
fluid of dark energy (DE) with constant equation of state parameter interacting
with dark matter (DM). The reconstruction method is based on expansions of the
gene... | [
{
"created": "Thu, 15 Jul 2010 01:14:40 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Cueva",
"Freddy",
""
],
[
"Nucamendi",
"Ulises",
""
]
] | We apply a parametric reconstruction method to a homogeneous, isotropic and spatially flat Friedmann-Robertson-Walker (FRW) cosmological model filled of a fluid of dark energy (DE) with constant equation of state parameter interacting with dark matter (DM). The reconstruction method is based on expansions of the genera... |
gr-qc/9811030 | Rafael D. Sorkin | Rafael D. Sorkin (Syracuse University and Perimeter Institute) | An energy bound deduced from the vanishing of the radiation reaction
force during uniform acceleration | 4 pages, plainTeX. New title, appendix added, small corrections and
additions. Source for most up to date version:
http://www.physics.syr.edu/~sorkin | null | null | SU-GP-98/11-1 | gr-qc hep-th physics.class-ph | null | We deduce from energy conservation a lower bound on the mass of any system
capable of imparting a constant acceleration to a charged body. We also point
out a connection between this bound and the so called dominant energy condition
of general relativity.
| [
{
"created": "Tue, 10 Nov 1998 22:21:22 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Oct 2003 06:35:58 GMT",
"version": "v2"
},
{
"created": "Wed, 4 Feb 2004 01:02:54 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Sorkin",
"Rafael D.",
"",
"Syracuse University and Perimeter Institute"
]
] | We deduce from energy conservation a lower bound on the mass of any system capable of imparting a constant acceleration to a charged body. We also point out a connection between this bound and the so called dominant energy condition of general relativity. |
gr-qc/0002069 | Bernhard Haisch | York Dobyns, Alfonso Rueda, Bernard Haisch | The Case for Inertia as a Vacuum Effect: A Reply to Woodward and Mahood | To appear in Foundations of Physics, Jan. 2000 | Found.Phys. 30 (2000) 59-80 | null | null | gr-qc | null | The possibility of an extrinsic origin for inertial reaction forces has
recently seen increased attention in the physical literature. Among theories of
extrinsic inertia, the two considered by the current work are (1) the
hypothesis that inertia is a result of gravitational interactions, and (2) the
hypothesis that i... | [
{
"created": "Sat, 19 Feb 2000 02:04:40 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Dobyns",
"York",
""
],
[
"Rueda",
"Alfonso",
""
],
[
"Haisch",
"Bernard",
""
]
] | The possibility of an extrinsic origin for inertial reaction forces has recently seen increased attention in the physical literature. Among theories of extrinsic inertia, the two considered by the current work are (1) the hypothesis that inertia is a result of gravitational interactions, and (2) the hypothesis that ine... |
gr-qc/0310074 | Graham Hall | G.S. Hall | On the Theory of Killing Orbits in Space-Time | Latex, 19 pages, no figure | Class.Quant.Grav. 20 (2003) 4067-4084 | 10.1088/0264-9381/20/18/313 | null | gr-qc | null | This paper gives a theoretical discussion of the orbits and isotropies which
arise in a space-time which admits a Lie algebra of Killing vector fields. The
submanifold structure of the orbits is explored together with their induced
Killing vector structure. A general decomposition of a space-time in terms of
the natu... | [
{
"created": "Tue, 14 Oct 2003 15:18:11 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Hall",
"G. S.",
""
]
] | This paper gives a theoretical discussion of the orbits and isotropies which arise in a space-time which admits a Lie algebra of Killing vector fields. The submanifold structure of the orbits is explored together with their induced Killing vector structure. A general decomposition of a space-time in terms of the nature... |
gr-qc/0403115 | Giampiero Esposito Dr. | Alfio Bonanno, Giampiero Esposito, Claudio Rubano | Arnowitt-Deser-Misner gravity with variable G and Lambda and fixed point
cosmologies from the renormalization group | 17 pages, Revtex-4, 2 figures. In the final version, the Hamiltonian
analysis has been amended and the presentation has been improved | Class.Quant.Grav.21:5005-5016,2004 | 10.1088/0264-9381/21/21/017 | DSF 2004/3 | gr-qc hep-th | null | Models of gravity with variable G and Lambda have acquired greater relevance
after the recent evidence in favour of the Einstein theory being
nonperturbatively renormalizable in the Weinberg sense. The present paper
applies the Arnowitt-Deser-Misner (ADM) formalism to such a class of
gravitational models. Are modifie... | [
{
"created": "Tue, 30 Mar 2004 16:30:34 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Sep 2004 16:01:06 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Bonanno",
"Alfio",
""
],
[
"Esposito",
"Giampiero",
""
],
[
"Rubano",
"Claudio",
""
]
] | Models of gravity with variable G and Lambda have acquired greater relevance after the recent evidence in favour of the Einstein theory being nonperturbatively renormalizable in the Weinberg sense. The present paper applies the Arnowitt-Deser-Misner (ADM) formalism to such a class of gravitational models. Are modified ... |
1210.2714 | Ratbay Myrzakulov | M. Sharif, S. Rani, R. Myrzakulov | Analysis of F(R,T) Gravity Models Through Energy Conditions | 18 pages | Eur. Phys. J. Plus, v.128, N11, 123 (2013) | 10.1140/epjp/i2013-13123-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is devoted to study the energy conditions in F(R,T) gravity for
FRW universe with perfect fluid, where $R$ is the Ricci scalar and $T$ is the
torsion scalar. We construct the general energy conditions in this theory and
reduce them in F(R) as well as F(T) theory of gravity. Further, we assume some
viable m... | [
{
"created": "Tue, 9 Oct 2012 04:44:45 GMT",
"version": "v1"
}
] | 2013-10-23 | [
[
"Sharif",
"M.",
""
],
[
"Rani",
"S.",
""
],
[
"Myrzakulov",
"R.",
""
]
] | This paper is devoted to study the energy conditions in F(R,T) gravity for FRW universe with perfect fluid, where $R$ is the Ricci scalar and $T$ is the torsion scalar. We construct the general energy conditions in this theory and reduce them in F(R) as well as F(T) theory of gravity. Further, we assume some viable mod... |
1810.00630 | Shaoqi Hou | Shaoqi Hou, Yungui Gong | Strong Equivalence Principle and Gravitational Wave Polarizations in
Horndeski Theory | 25 pages, 2 figures. Matched the published version | Eur. Phys. J. C 79 (2019) 197 | 10.1140/epjc/s10052-019-6684-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The relative acceleration between two nearby particles moving along
accelerated trajectories is studied, which generalizes the geodesic deviation
equation. The polarization content of the gravitational wave in Horndeski
theory is investigated by examining the relative acceleration between two
self-gravitating particl... | [
{
"created": "Mon, 1 Oct 2018 11:34:25 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Mar 2019 09:55:39 GMT",
"version": "v2"
}
] | 2019-03-08 | [
[
"Hou",
"Shaoqi",
""
],
[
"Gong",
"Yungui",
""
]
] | The relative acceleration between two nearby particles moving along accelerated trajectories is studied, which generalizes the geodesic deviation equation. The polarization content of the gravitational wave in Horndeski theory is investigated by examining the relative acceleration between two self-gravitating particles... |
2312.16605 | Wen-Di Guo | Wen-Di Guo, Qin Tan, and Yu-Xiao Liu | Quasinormal modes and greybody factor of a Lorentz-violating black hole | 10 pages, 4 figures, and 3 tables | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, a static spherically symmetric black hole solution was found in
gravity nonminimally coupled a background Kalb-Ramond field. The Lorentz
symmetry is spontaneously broken when the Kalb-Ramond field has a nonvanishing
vacuum expectation value. In this work, we focus on the quasinormal modes and
greybody facto... | [
{
"created": "Wed, 27 Dec 2023 15:07:08 GMT",
"version": "v1"
}
] | 2023-12-29 | [
[
"Guo",
"Wen-Di",
""
],
[
"Tan",
"Qin",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | Recently, a static spherically symmetric black hole solution was found in gravity nonminimally coupled a background Kalb-Ramond field. The Lorentz symmetry is spontaneously broken when the Kalb-Ramond field has a nonvanishing vacuum expectation value. In this work, we focus on the quasinormal modes and greybody factor ... |
gr-qc/0104061 | Manuel Tiglio | Olivier Sarbach and Manuel Tiglio | Gauge invariant perturbations of Schwarzschild black holes in
horizon-penetrating coordinates | Typos corrected. A small paragraph and two references added at the
end of the Summary, Section II.C, concerning the case where matter fields are
coupled to the metric. Some details have been included in the derivation of
the radiated energy in section IV. Some references added. 21 pages, to appear
in PRD | Phys.Rev. D64 (2001) 084016 | 10.1103/PhysRevD.64.084016 | CGPG-01/4-5 | gr-qc | null | We derive a geometrical version of the Regge-Wheeler and Zerilli equations,
which allows us to study gravitational perturbations on an arbitrary
spherically symmetric slicing of a Schwarzschild black hole. We explain how to
obtain the gauge-invariant part of the metric perturbations from the amplitudes
obeying our ge... | [
{
"created": "Wed, 18 Apr 2001 19:27:33 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Jun 2001 18:36:46 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Sarbach",
"Olivier",
""
],
[
"Tiglio",
"Manuel",
""
]
] | We derive a geometrical version of the Regge-Wheeler and Zerilli equations, which allows us to study gravitational perturbations on an arbitrary spherically symmetric slicing of a Schwarzschild black hole. We explain how to obtain the gauge-invariant part of the metric perturbations from the amplitudes obeying our gene... |
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