id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0702055 | Joe Polchinski | Joseph Polchinski and Jorge V. Rocha | Cosmic String Structure at the Gravitational Radiation Scale | 15 pages, 1 figure. v2, v3: small corrections, updated references | Phys.Rev.D75:123503,2007 | 10.1103/PhysRevD.75.123503 | null | gr-qc astro-ph hep-ph hep-th | null | We use our model of the small scale structure on cosmic strings to develop
further the result of Siemens, Olum, and Vilenkin that the gravitational
radiation length scale on cosmic strings is smaller than the previously assumed
$\Gamma G\mu t$. We discuss some of the properties of cosmic string loops at
this cutoff s... | [
{
"created": "Fri, 9 Feb 2007 03:40:34 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Mar 2007 01:25:54 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Polchinski",
"Joseph",
""
],
[
"Rocha",
"Jorge V.",
""
]
] | We use our model of the small scale structure on cosmic strings to develop further the result of Siemens, Olum, and Vilenkin that the gravitational radiation length scale on cosmic strings is smaller than the previously assumed $\Gamma G\mu t$. We discuss some of the properties of cosmic string loops at this cutoff sca... |
0811.1478 | Aleksandar Rakic | Aleksandar Rakic and Dominik J. Schwarz | General Relativistic Rotation Curves in a Post-Newtonian Light | 5 pages PoS style, no figures, talk given at the Identification of
Dark Matter conference (idm2008) Stockholm, 18-22 August 2008 | PoS idm2008:096,2008 | null | BI-TP 2008/36 | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The missing of a Keplerian fall-off in the observed galaxy rotation curves
represents classical evidence for the existence of dark matter on galactic
scales. There has been some recent activity concerning the potential of
modelling galactic systems with the help of general relativity. This was
motivated by claims tha... | [
{
"created": "Mon, 10 Nov 2008 14:26:07 GMT",
"version": "v1"
}
] | 2010-02-17 | [
[
"Rakic",
"Aleksandar",
""
],
[
"Schwarz",
"Dominik J.",
""
]
] | The missing of a Keplerian fall-off in the observed galaxy rotation curves represents classical evidence for the existence of dark matter on galactic scales. There has been some recent activity concerning the potential of modelling galactic systems with the help of general relativity. This was motivated by claims that ... |
gr-qc/9511060 | Richard Epp | Richard J. Epp | The Symplectic Structure of General Relativity in the Double-Null (2+2)
Formalism | 14 pages, LaTeX. Four figures available by FAX from
repp@dirac.ucdavis.edu | null | null | UCD-PHY-95-40 | gr-qc | null | In the (2+2) formulation of general relativity spacetime is foliated by a
two-parameter family of spacelike 2-surfaces (instead of the more usual
one-parameter family of spacelike 3-surfaces). In a partially gauge-fixed
setting (double-null gauge), I write down the symplectic structure of general
relativity in terms ... | [
{
"created": "Wed, 22 Nov 1995 04:36:30 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"Epp",
"Richard J.",
""
]
] | In the (2+2) formulation of general relativity spacetime is foliated by a two-parameter family of spacelike 2-surfaces (instead of the more usual one-parameter family of spacelike 3-surfaces). In a partially gauge-fixed setting (double-null gauge), I write down the symplectic structure of general relativity in terms of... |
0708.2690 | Muhammad Sharif | M. Sharif and Umber Sheikh | Effects of Schwarzschild Black Hole Horizon on Isothermal Plasma Wave
Dispersion | 23 pages, 8 figures accepted for publication in Gen. Relat. Grav | Gen.Rel.Grav.39:2095-2124,2007 | 10.1007/s10714-007-0505-4 | null | gr-qc astro-ph | null | The 3+1 GRMHD equations for Schwarzschild spacetime in Rindler coordinates
with isothermal state of plasma are formulated. We consider the cases of
non-rotating and rotating backgrounds with non-magnetized and magnetized
plasmas. For these cases, the perturbed form of these equations are linearized
and Fourier analyz... | [
{
"created": "Mon, 20 Aug 2007 12:42:08 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Sharif",
"M.",
""
],
[
"Sheikh",
"Umber",
""
]
] | The 3+1 GRMHD equations for Schwarzschild spacetime in Rindler coordinates with isothermal state of plasma are formulated. We consider the cases of non-rotating and rotating backgrounds with non-magnetized and magnetized plasmas. For these cases, the perturbed form of these equations are linearized and Fourier analyzed... |
1810.00886 | Raimon Luna | Raimon Luna, Miguel Zilh\~ao, Vitor Cardoso, Jo\~ao L. Costa, Jos\'e
Nat\'ario | Strong cosmic censorship: The nonlinear story | 9 pages, 8 figures. v2: Matches published version | Phys. Rev. D 99, 064014 (2019) | 10.1103/PhysRevD.99.064014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A satisfactory formulation of the laws of physics entails that the future
evolution of a physical system should be determined from appropriate initial
conditions. The existence of Cauchy horizons in solutions of the Einstein field
equations is therefore problematic, and expected to be an unstable artifact of
General ... | [
{
"created": "Mon, 1 Oct 2018 18:00:03 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Mar 2019 19:25:12 GMT",
"version": "v2"
}
] | 2019-03-27 | [
[
"Luna",
"Raimon",
""
],
[
"Zilhão",
"Miguel",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Costa",
"João L.",
""
],
[
"Natário",
"José",
""
]
] | A satisfactory formulation of the laws of physics entails that the future evolution of a physical system should be determined from appropriate initial conditions. The existence of Cauchy horizons in solutions of the Einstein field equations is therefore problematic, and expected to be an unstable artifact of General Re... |
gr-qc/0401114 | Chris Van Den Broeck | Abhay Ashtekar, Jonathan Engle, Tomasz Pawlowski, and Chris Van Den
Broeck | Multipole Moments of Isolated Horizons | 25 pages, 1 figure. Minor typos corrected, reference added | Class.Quant.Grav. 21 (2004) 2549-2570 | 10.1088/0264-9381/21/11/003 | CGPG 2004-01/3 | gr-qc hep-th | null | To every axi-symmetric isolated horizon we associate two sets of numbers,
$M_n$ and $J_n$ with $n = 0, 1, 2, ...$, representing its mass and angular
momentum multipoles. They provide a diffeomorphism invariant characterization
of the horizon geometry. Physically, they can be thought of as the `source
multipoles' of b... | [
{
"created": "Wed, 28 Jan 2004 19:21:13 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Oct 2004 18:19:40 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Engle",
"Jonathan",
""
],
[
"Pawlowski",
"Tomasz",
""
],
[
"Broeck",
"Chris Van Den",
""
]
] | To every axi-symmetric isolated horizon we associate two sets of numbers, $M_n$ and $J_n$ with $n = 0, 1, 2, ...$, representing its mass and angular momentum multipoles. They provide a diffeomorphism invariant characterization of the horizon geometry. Physically, they can be thought of as the `source multipoles' of bla... |
2301.02534 | Luis Cesar Nunes Dos Santos | L. C. N. Santos, F. M. da Silva, C. E. Mota, I. P. Lobo, V. B. Bezerra | Kiselev black holes in $f(R,T)$ gravity | null | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain new exact solutions for the gravitational field equations in the
context of $f(R,T)$ gravity, thereby obtaining different classes of black holes
surrounded by fluids, taking into account some specific values of the parameter
of the equations of state, $w$. In order to obtain these solutions in the
context o... | [
{
"created": "Thu, 5 Jan 2023 13:18:32 GMT",
"version": "v1"
}
] | 2023-01-09 | [
[
"Santos",
"L. C. N.",
""
],
[
"da Silva",
"F. M.",
""
],
[
"Mota",
"C. E.",
""
],
[
"Lobo",
"I. P.",
""
],
[
"Bezerra",
"V. B.",
""
]
] | We obtain new exact solutions for the gravitational field equations in the context of $f(R,T)$ gravity, thereby obtaining different classes of black holes surrounded by fluids, taking into account some specific values of the parameter of the equations of state, $w$. In order to obtain these solutions in the context of ... |
2301.04826 | Srashti Goyal | Srashti Goyal and Aditya Vijaykumar and Jose Maria Ezquiaga and Miguel
Zumalacarregui | Probing lens-induced gravitational-wave birefringence as a test of
general relativity | 18 pages, 10 figures | Phys. Rev. D 108, 024052 2023 | 10.1103/PhysRevD.108.024052 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | Theories beyond general relativity (GR) modify the propagation of
gravitational waves (GWs). In some, inhomogeneities (aka. gravitational lenses)
allow interactions between the metric and additional fields to cause
lens-induced birefringence (LIB): a different speed of the two linear GW
polarisations ($+$ and $\times... | [
{
"created": "Thu, 12 Jan 2023 06:07:35 GMT",
"version": "v1"
}
] | 2023-07-25 | [
[
"Goyal",
"Srashti",
""
],
[
"Vijaykumar",
"Aditya",
""
],
[
"Ezquiaga",
"Jose Maria",
""
],
[
"Zumalacarregui",
"Miguel",
""
]
] | Theories beyond general relativity (GR) modify the propagation of gravitational waves (GWs). In some, inhomogeneities (aka. gravitational lenses) allow interactions between the metric and additional fields to cause lens-induced birefringence (LIB): a different speed of the two linear GW polarisations ($+$ and $\times$)... |
2009.02579 | Hang Yu | Hang Yu and Yanbei Chen | Direct determination of supermassive black hole properties with
gravitational-wave radiation from surrounding stellar-mass black hole
binaries | 5 pages (main text excluding references), 5 figures; accepted for
publication in PRL | Phys. Rev. Lett. 126, 021101 (2021) | 10.1103/PhysRevLett.126.021101 | null | gr-qc astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A significant number of stellar-mass black-hole (BH) binaries may merge in
galactic nuclei or in the surrounding gas disks. With purposed space-borne
gravitational-wave observatories, we may use such a binary as a signal carrier
to probe modulations induced by a central supermassive BH (SMBH), which further
allows us... | [
{
"created": "Sat, 5 Sep 2020 18:20:23 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Dec 2020 21:41:56 GMT",
"version": "v2"
}
] | 2021-01-20 | [
[
"Yu",
"Hang",
""
],
[
"Chen",
"Yanbei",
""
]
] | A significant number of stellar-mass black-hole (BH) binaries may merge in galactic nuclei or in the surrounding gas disks. With purposed space-borne gravitational-wave observatories, we may use such a binary as a signal carrier to probe modulations induced by a central supermassive BH (SMBH), which further allows us t... |
gr-qc/0611042 | Sergey S. Kokarev | Sergey S. Kokarev and Vladimir G. Krechet | Time-dependent Spherically-symmetric 5-D Vacuum Solutions | null | Grav.Cosmol.2:99-106,1996 | null | null | gr-qc | null | Vacuum 5-D Einstein equations with spherical symmetry and t-dependence are
considered. For the case of separating variables several classes of exact
solutions are obtained. Effective matter, induced by geometrical scalar field
is analyzed.
| [
{
"created": "Mon, 6 Nov 2006 17:45:09 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kokarev",
"Sergey S.",
""
],
[
"Krechet",
"Vladimir G.",
""
]
] | Vacuum 5-D Einstein equations with spherical symmetry and t-dependence are considered. For the case of separating variables several classes of exact solutions are obtained. Effective matter, induced by geometrical scalar field is analyzed. |
2404.11984 | Subenoy Chakraborty | Ayanendu Dutta, Dhritimalya Roy, Subenoy Chakraborty | Particle motion around traversable wormholes: Possibility of closed
timelike geodesics | 12 pages, 7 figures, 1 table. Accepted in New Astronomy | New Astron. 111, 102236 (2024) | 10.1016/j.newast.2024.102236 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present work investigates the general wormhole solution in Einstein
gravity with an exponential shape function around an ultrastatic and a finite
redshift geometry. The geodesic motion around the wormholes is studied in which
the deflection angle of the orbiting photon sphere is found to be negative
after a certa... | [
{
"created": "Thu, 18 Apr 2024 08:27:03 GMT",
"version": "v1"
}
] | 2024-06-06 | [
[
"Dutta",
"Ayanendu",
""
],
[
"Roy",
"Dhritimalya",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | The present work investigates the general wormhole solution in Einstein gravity with an exponential shape function around an ultrastatic and a finite redshift geometry. The geodesic motion around the wormholes is studied in which the deflection angle of the orbiting photon sphere is found to be negative after a certain... |
2310.12463 | Benjamin Grace | Benjamin Grace, Karl Wette, Susan M. Scott, Ling Sun | Piecewise frequency model for searches for long-transient gravitational
waves from young neutron stars | 16 pages, 11 figures, 2 tables | Phys. Rev. D 108, 123045 (2023) | 10.1103/PhysRevD.108.123045 | LIGO-P2300314 | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we characterise the performance of a new search technique
designed to be sensitive to the remnants of binary neutron star systems.
Sensitivity estimates of the new method on simulated data are competitive
against those of other work. Previous searches for a gravitational-wave signal
from a possible neutr... | [
{
"created": "Thu, 19 Oct 2023 04:44:28 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Dec 2023 05:38:18 GMT",
"version": "v2"
}
] | 2024-01-17 | [
[
"Grace",
"Benjamin",
""
],
[
"Wette",
"Karl",
""
],
[
"Scott",
"Susan M.",
""
],
[
"Sun",
"Ling",
""
]
] | In this work we characterise the performance of a new search technique designed to be sensitive to the remnants of binary neutron star systems. Sensitivity estimates of the new method on simulated data are competitive against those of other work. Previous searches for a gravitational-wave signal from a possible neutron... |
gr-qc/9905076 | Gaspare Carbone | Gaspare Carbone, Mauro Carfora, Annalisa Marzuoli | Invariants of spin networks with boundary in Quantum Gravity and TQFT's | 9 pages | null | null | DFNT-T 9/99 SISSA 48/99/FM | gr-qc | null | The search for classical or quantum combinatorial invariants of compact
n-dimensional manifolds (n=3,4) plays a key role both in topological field
theories and in lattice quantum gravity. We present here a generalization of
the partition function proposed by Ponzano and Regge to the case of a compact
3-dimensional si... | [
{
"created": "Thu, 20 May 1999 13:02:56 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Carbone",
"Gaspare",
""
],
[
"Carfora",
"Mauro",
""
],
[
"Marzuoli",
"Annalisa",
""
]
] | The search for classical or quantum combinatorial invariants of compact n-dimensional manifolds (n=3,4) plays a key role both in topological field theories and in lattice quantum gravity. We present here a generalization of the partition function proposed by Ponzano and Regge to the case of a compact 3-dimensional simp... |
2211.02601 | Riasat Ali | Rimsha Babar, Muhammad Asgher and Riasat Ali | Gravitational Analysis of Einstein-Non-Linear-Maxwell-Yukawa Black Hole
under the Effect of Newman-Janis Algorithm | 12 Pages, 8 figures, Published in Physica Scripta | Phys. Scr. (2022)97: 125201 | 10.1088/1402-4896/ac9863 | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | In this paper, we analyze the rotating Einstein-non-linear-Maxwell-Yukawa
black hole solution by Janis-Newman algorithmic rule and complex calculations.
We investigate the basic properties (i.e., Hawking radiation) for the
corresponding black hole solution. From the horizon structure of the black
hole, we discuss the... | [
{
"created": "Fri, 4 Nov 2022 17:16:47 GMT",
"version": "v1"
}
] | 2022-11-07 | [
[
"Babar",
"Rimsha",
""
],
[
"Asgher",
"Muhammad",
""
],
[
"Ali",
"Riasat",
""
]
] | In this paper, we analyze the rotating Einstein-non-linear-Maxwell-Yukawa black hole solution by Janis-Newman algorithmic rule and complex calculations. We investigate the basic properties (i.e., Hawking radiation) for the corresponding black hole solution. From the horizon structure of the black hole, we discuss the g... |
1706.08886 | Jose Edgar Madriz Aguilar | Jos\'e Edgar Madriz Aguilar, J. Zamarripa, A. Peraza and J. A. Licea | $\Lambda(t)$CDM and the present accelerating expansion of the universe
from 5D scalar vacuum | 8 pages. No figures. arXiv admin note: text overlap with
arXiv:0902.4736 | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter we investigate some consequences of considering our 4D
observable universe as locally and isometrically embeded into a 5D spacetime,
where gravity is described by a Brans-Dicke theory in vacuum. Once we impose
the embeding conditions we obtain that gravity on the 4D spacetime is governed
by the Einstei... | [
{
"created": "Mon, 26 Jun 2017 14:10:22 GMT",
"version": "v1"
}
] | 2017-06-28 | [
[
"Aguilar",
"José Edgar Madriz",
""
],
[
"Zamarripa",
"J.",
""
],
[
"Peraza",
"A.",
""
],
[
"Licea",
"J. A.",
""
]
] | In this letter we investigate some consequences of considering our 4D observable universe as locally and isometrically embeded into a 5D spacetime, where gravity is described by a Brans-Dicke theory in vacuum. Once we impose the embeding conditions we obtain that gravity on the 4D spacetime is governed by the Einstein ... |
1605.07630 | Rajeev Kumar Jain | Alessandro Codello, Rajeev Kumar Jain | Leading Gravitational Corrections and a Unified Universe | 5 pages, 2 figures. This essay received "Honorable Mention" in the
2016 Gravity Research Foundation Awards for Essays on Gravitation. arXiv
admin note: substantial text overlap with arXiv:1603.00028 | Int. J. Mod. Phys. D 25, 1644023 (2016) | 10.1142/S0218271816440235 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Leading order gravitational corrections to the Einstein-Hilbert action can
lead to a consistent picture of the universe by unifying the epochs of
inflation and dark energy in a single framework. While the leading local
correction induces an inflationary phase in the early universe, the leading
non-local term leads to... | [
{
"created": "Tue, 24 May 2016 20:00:15 GMT",
"version": "v1"
}
] | 2016-10-27 | [
[
"Codello",
"Alessandro",
""
],
[
"Jain",
"Rajeev Kumar",
""
]
] | Leading order gravitational corrections to the Einstein-Hilbert action can lead to a consistent picture of the universe by unifying the epochs of inflation and dark energy in a single framework. While the leading local correction induces an inflationary phase in the early universe, the leading non-local term leads to a... |
2404.04649 | Faisal Javed | G. Mustafa, Faisal Javed, S. K. Maurya, Abdelghani Errehymy | New embedded wormhole solutions in Ricci inverse gravity | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter, we obtain two new embedded WH solutions by using the class-I
approach in the background of newly fourth-order Ricci inverse gravity. We show
that the combination of these newly calculated shape functions and Ricci
inverse gravity provides us with the possibility of obtaining traversable
wormholes. All... | [
{
"created": "Sat, 6 Apr 2024 14:56:02 GMT",
"version": "v1"
}
] | 2024-04-09 | [
[
"Mustafa",
"G.",
""
],
[
"Javed",
"Faisal",
""
],
[
"Maurya",
"S. K.",
""
],
[
"Errehymy",
"Abdelghani",
""
]
] | In this letter, we obtain two new embedded WH solutions by using the class-I approach in the background of newly fourth-order Ricci inverse gravity. We show that the combination of these newly calculated shape functions and Ricci inverse gravity provides us with the possibility of obtaining traversable wormholes. All t... |
1108.0312 | Duncan Macleod | Duncan M. Macleod, Stephen Fairhurst, Brennan Hughey, Andrew P.
Lundgren, Larne Pekowsky, Jameson Rollins, Joshua R. Smith | Reducing the effect of seismic noise in LIGO searches by targeted veto
generation | 16 pages, 5 figures | Class.Quant.Grav., 29:055006, 2012 | 10.1088/0264-9381/29/5/055006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Laser Interferometer Gravitational-Wave Observatory forms part of the
international effort to detect and study gravitational waves of astrophysical
origin. One of the major obstacles for this project with the first generation
detectors was the effect of seismic noise on instrument sensitivity -
environmental dist... | [
{
"created": "Mon, 1 Aug 2011 13:41:27 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Aug 2011 12:50:44 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Mar 2013 16:24:19 GMT",
"version": "v3"
}
] | 2013-03-21 | [
[
"Macleod",
"Duncan M.",
""
],
[
"Fairhurst",
"Stephen",
""
],
[
"Hughey",
"Brennan",
""
],
[
"Lundgren",
"Andrew P.",
""
],
[
"Pekowsky",
"Larne",
""
],
[
"Rollins",
"Jameson",
""
],
[
"Smith",
"Joshua R.",
... | The Laser Interferometer Gravitational-Wave Observatory forms part of the international effort to detect and study gravitational waves of astrophysical origin. One of the major obstacles for this project with the first generation detectors was the effect of seismic noise on instrument sensitivity - environmental distur... |
1511.03755 | Cosimo Bambi | Cosimo Bambi, Alejandro Cardenas-Avendano, Gonzalo J. Olmo, D.
Rubiera-Garcia | Wormholes and nonsingular space-times in Palatini $f(R)$ gravity | 8 pages, 2 figures | Phys. Rev. D 93, 064016 (2016) | 10.1103/PhysRevD.93.064016 | IFIC/16-58 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reconsider the problem of $f(R)$ theories of gravity coupled to
Born-Infeld theory of electrodynamics formulated in a Palatini approach, where
metric and connection are independent fields. By studying electrovacuum
configurations in a static and spherically symmetric space-time, we find
solutions which reduce to t... | [
{
"created": "Thu, 12 Nov 2015 02:07:06 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Mar 2016 21:01:16 GMT",
"version": "v2"
}
] | 2016-07-25 | [
[
"Bambi",
"Cosimo",
""
],
[
"Cardenas-Avendano",
"Alejandro",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Rubiera-Garcia",
"D.",
""
]
] | We reconsider the problem of $f(R)$ theories of gravity coupled to Born-Infeld theory of electrodynamics formulated in a Palatini approach, where metric and connection are independent fields. By studying electrovacuum configurations in a static and spherically symmetric space-time, we find solutions which reduce to the... |
1807.05029 | Masashi Kimura | Masashi Kimura | Stability analysis of Schwarzschild black holes in dynamical
Chern-Simons gravity | 10 pages, accepted for publication in PRD | null | 10.1103/PhysRevD.98.024048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamical Chern-Simons gravity has an interesting feature that the parity
violating term exists, and the coupling is determined by a dynamical scalar
field. When the spacetime has spherical symmetry, the parity violating term
vanishes, and then the metric of the Schwarzschild spacetime with vanishing
scalar field is ... | [
{
"created": "Fri, 13 Jul 2018 12:10:12 GMT",
"version": "v1"
}
] | 2018-08-15 | [
[
"Kimura",
"Masashi",
""
]
] | Dynamical Chern-Simons gravity has an interesting feature that the parity violating term exists, and the coupling is determined by a dynamical scalar field. When the spacetime has spherical symmetry, the parity violating term vanishes, and then the metric of the Schwarzschild spacetime with vanishing scalar field is an... |
gr-qc/9703068 | Curt Cutler | Curt Cutler | Angular Resolution of the LISA Gravitational Wave Detector | 15 pages, 5 figures, RevTex 3.0 file | Phys.Rev. D57 (1998) 7089-7102 | 10.1103/PhysRevD.57.7089 | null | gr-qc | null | We calculate the angular resolution of the planned LISA detector, a
space-based laser interferometer for measuring low-frequency gravitational
waves from galactic and extragalactic sources. LISA is not a pointed
instrument; it is an all-sky monitor with a quadrupolar beam pattern. LISA will
measure simultaneously bot... | [
{
"created": "Mon, 24 Mar 1997 21:34:25 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Cutler",
"Curt",
""
]
] | We calculate the angular resolution of the planned LISA detector, a space-based laser interferometer for measuring low-frequency gravitational waves from galactic and extragalactic sources. LISA is not a pointed instrument; it is an all-sky monitor with a quadrupolar beam pattern. LISA will measure simultaneously both ... |
2108.07801 | Ghulam Mustafa | G. Mustafa, Ibrar Hussain, Wu-Ming Liu | Quasi Periodic Oscillations of Test Particles and Red-Blue Shifts of the
Photons Emitted By the Charged Test Particles Orbiting the Charged Black Hole
in the Presence of Quintessence and Clouds of Strings | 20 pages, 14 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Here we examine the circular motion of test particles and photons in the
spacetime geometry of charged black hole surrounded by quintessence and clouds
of strings for the equation of state parameter $\omega_q=-2/3$. We observe that
there exist stable circular orbits in this geometry for very small values of
the quint... | [
{
"created": "Mon, 16 Aug 2021 20:10:39 GMT",
"version": "v1"
}
] | 2021-08-19 | [
[
"Mustafa",
"G.",
""
],
[
"Hussain",
"Ibrar",
""
],
[
"Liu",
"Wu-Ming",
""
]
] | Here we examine the circular motion of test particles and photons in the spacetime geometry of charged black hole surrounded by quintessence and clouds of strings for the equation of state parameter $\omega_q=-2/3$. We observe that there exist stable circular orbits in this geometry for very small values of the quintes... |
gr-qc/0603060 | Serguei Krasnikov | S. Krasnikov | Superluminal motion in (semi)classical relativity | Pedagogical review. In Russian | null | null | null | gr-qc astro-ph physics.space-ph | null | The possibility is discussed of superluminal motion of non-tachyonic (i.e.
moving with the instantaneous speed v<c) bodies within general relativity. It
is shown that in some occasions quantum field theory apparently prohibits such
motion, but not - to all appearance - in the general case.
| [
{
"created": "Wed, 15 Mar 2006 16:16:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Krasnikov",
"S.",
""
]
] | The possibility is discussed of superluminal motion of non-tachyonic (i.e. moving with the instantaneous speed v<c) bodies within general relativity. It is shown that in some occasions quantum field theory apparently prohibits such motion, but not - to all appearance - in the general case. |
gr-qc/9802071 | C. H. Woo | Shu-Yuan Chu | Is It Possible to Disentangle an Entangled Quantum State? | 5 pages; TeX | null | null | UCR HEP-T184 | gr-qc hep-ph hep-th quant-ph | null | Experimental tests of the suggestion that the generalization of Wheeler and
Feynman's time symmetric system is the dynamical basis underlying quantum
mechanics are considered. In a time-symmetric system, the instantaneous
correlations exhibited by two spatially separated particles in an entangled
state can be establi... | [
{
"created": "Fri, 27 Feb 1998 21:18:40 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Chu",
"Shu-Yuan",
""
]
] | Experimental tests of the suggestion that the generalization of Wheeler and Feynman's time symmetric system is the dynamical basis underlying quantum mechanics are considered. In a time-symmetric system, the instantaneous correlations exhibited by two spatially separated particles in an entangled state can be establish... |
2303.05986 | Sophie BIni | Sophie Bini, Gabriele Vedovato, Marco Drago, Francesco Salemi,
Giovanni Andrea Prodi | An autoencoder neural network integrated into gravitational-wave burst
searches to improve the rejection of noise transients | 19 pages, 7 figures, submitted to Classical and Quantum Gravity | null | 10.1088/1361-6382/acd981 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The gravitational-wave (GW) detector data are affected by short-lived
instrumental or terrestrial transients, called glitches, which can simulate GW
signals. Mitigation of glitches is particularly difficult for algorithms which
target generic sources of short-duration GW transients (GWT), and do not rely
on GW wavefo... | [
{
"created": "Fri, 10 Mar 2023 15:42:03 GMT",
"version": "v1"
}
] | 2023-06-21 | [
[
"Bini",
"Sophie",
""
],
[
"Vedovato",
"Gabriele",
""
],
[
"Drago",
"Marco",
""
],
[
"Salemi",
"Francesco",
""
],
[
"Prodi",
"Giovanni Andrea",
""
]
] | The gravitational-wave (GW) detector data are affected by short-lived instrumental or terrestrial transients, called glitches, which can simulate GW signals. Mitigation of glitches is particularly difficult for algorithms which target generic sources of short-duration GW transients (GWT), and do not rely on GW waveform... |
1103.6168 | Trevor W. Marshall | Trevor W. Marshall | Fields tell matter how to move | 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Starting from the Oppenheimer-Snyder solution for gravitational collapse, we
show by putting it into the harmonic coordinates, for which the distant Riemann
metric is galilean, that the final state of collapse for a collapsed star of
any mass, including the one thought to occupy the centre of our galaxy, has a
finite... | [
{
"created": "Thu, 31 Mar 2011 13:12:05 GMT",
"version": "v1"
}
] | 2011-04-01 | [
[
"Marshall",
"Trevor W.",
""
]
] | Starting from the Oppenheimer-Snyder solution for gravitational collapse, we show by putting it into the harmonic coordinates, for which the distant Riemann metric is galilean, that the final state of collapse for a collapsed star of any mass, including the one thought to occupy the centre of our galaxy, has a finite r... |
gr-qc/9704074 | Don Koks | Don Koks, B. L. Hu, Andrew Matacz, Alpan Raval | Thermal Particle Creation in Cosmological Spacetimes: A Stochastic
Approach | 17 pages, revtex (aps, eqsecnum), submitted to PRD, April 1997 | Phys.Rev.D56:4905-4915,1997; Erratum-ibid.D57:1317,1998 | 10.1103/PhysRevD.56.4905 10.1103/PhysRevD.57.1317 | UMDPP 96-116 | gr-qc | null | The stochastic method based on the influence functional formalism introduced
in an earlier paper to treat particle creation in near-uniformly accelerated
detectors and collapsing masses is applied here to treat thermal and
near-thermal radiance in certain types of cosmological expansions. It is
indicated how the appe... | [
{
"created": "Sun, 27 Apr 1997 03:48:00 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Koks",
"Don",
""
],
[
"Hu",
"B. L.",
""
],
[
"Matacz",
"Andrew",
""
],
[
"Raval",
"Alpan",
""
]
] | The stochastic method based on the influence functional formalism introduced in an earlier paper to treat particle creation in near-uniformly accelerated detectors and collapsing masses is applied here to treat thermal and near-thermal radiance in certain types of cosmological expansions. It is indicated how the appear... |
1003.3942 | Giovanni Amelino-Camelia | Giovanni Amelino-Camelia | Doubly-Special Relativity: Facts, Myths and Some Key Open Issues | This is the preprint version of a paper prepared for a special issue
"Feature Papers: Symmetry Concepts and Applications" of the journal Symmetry | null | 10.1142/9789814287333_0006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I report, emphasizing some key open issues and some aspects that are
particularly relevant for phenomenology, on the status of the development of
"doubly-special" relativistic ("DSR") theories with both an
observer-independent high-velocity scale and an observer-independent
small-length/large-momentum scale, possibly... | [
{
"created": "Sat, 20 Mar 2010 17:33:30 GMT",
"version": "v1"
}
] | 2016-12-21 | [
[
"Amelino-Camelia",
"Giovanni",
""
]
] | I report, emphasizing some key open issues and some aspects that are particularly relevant for phenomenology, on the status of the development of "doubly-special" relativistic ("DSR") theories with both an observer-independent high-velocity scale and an observer-independent small-length/large-momentum scale, possibly r... |
1711.02273 | Rodolfo Casana R. Casana | R. Casana, A. Cavalcante, F. P. Poulis, E. B. Santos | An exact Schwarzschild-like solution in a bumblebee gravity model | 10 Latex2e pages | Phys. Rev. D 97, 104001 (2018) | 10.1103/PhysRevD.97.104001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have obtained an exact vacuum solution from a gravity sector contained in
the minimal standard-model extension. The theoretical model assumes a Riemann
spacetime coupled to the bumblebee field which is responsible for the
spontaneous Lorentz symmetry breaking. The solution achieved in a static and
spherically symm... | [
{
"created": "Tue, 7 Nov 2017 03:46:30 GMT",
"version": "v1"
}
] | 2018-05-07 | [
[
"Casana",
"R.",
""
],
[
"Cavalcante",
"A.",
""
],
[
"Poulis",
"F. P.",
""
],
[
"Santos",
"E. B.",
""
]
] | We have obtained an exact vacuum solution from a gravity sector contained in the minimal standard-model extension. The theoretical model assumes a Riemann spacetime coupled to the bumblebee field which is responsible for the spontaneous Lorentz symmetry breaking. The solution achieved in a static and spherically symmet... |
2302.06140 | George Pappas Dr | Kostas Glampedakis and George Pappas | Is a black hole shadow a reliable test of the no-hair theorem? | Accepted for publication as a Regular Article in Physical Review D | Phys. Rev. D 107, 064001 (2023) | 10.1103/PhysRevD.107.064001 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Capturing the image of the shadow cast by the event horizon of an illuminated
black hole is, at the most basic level, an experiment of extreme light
deflection in a strongly curved spacetime. As such, the properties of an imaged
shadow can be used to probe the general relativistic Kerr nature of
astrophysical black h... | [
{
"created": "Mon, 13 Feb 2023 07:00:42 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Feb 2023 13:51:38 GMT",
"version": "v2"
}
] | 2023-03-14 | [
[
"Glampedakis",
"Kostas",
""
],
[
"Pappas",
"George",
""
]
] | Capturing the image of the shadow cast by the event horizon of an illuminated black hole is, at the most basic level, an experiment of extreme light deflection in a strongly curved spacetime. As such, the properties of an imaged shadow can be used to probe the general relativistic Kerr nature of astrophysical black hol... |
2104.13952 | Celio Muniz | G. Alencar, V. B. Bezerra and C. R. Muniz | Casimir Wormholes in (2+1) Dimensions with Applications to the Graphene | two figures, typos fixed | null | 10.1140/epjc/s10052-021-09734-0 | null | gr-qc cond-mat.other hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we show that wormholes in (2+1) dimensions (3-D) cannot be
sourced solely by both Casimir energy and tension, differently from what
happens in a 4-D scenario, in which case it has been shown recently, by the
direct computation of the exact shape and redshift functions of a wormhole
solution, that this i... | [
{
"created": "Wed, 28 Apr 2021 18:22:02 GMT",
"version": "v1"
},
{
"created": "Mon, 17 May 2021 12:58:20 GMT",
"version": "v2"
}
] | 2021-11-03 | [
[
"Alencar",
"G.",
""
],
[
"Bezerra",
"V. B.",
""
],
[
"Muniz",
"C. R.",
""
]
] | In this paper we show that wormholes in (2+1) dimensions (3-D) cannot be sourced solely by both Casimir energy and tension, differently from what happens in a 4-D scenario, in which case it has been shown recently, by the direct computation of the exact shape and redshift functions of a wormhole solution, that this is ... |
0705.3277 | Kevin E. Cahill | Kevin Cahill | Inflation in a Symmetric Vacuum | 4 pages | null | null | null | gr-qc | null | If in a finite universe, the tree-level vacuum is a symmetric superposition
of coherent states, in each of which the inflaton field assumes a different,
energy-minimizing mean value (vev), then the resulting energy is positive and
decreases exponentially as the volume of the universe increases. This effect
can drive ... | [
{
"created": "Wed, 23 May 2007 02:09:17 GMT",
"version": "v1"
}
] | 2007-05-24 | [
[
"Cahill",
"Kevin",
""
]
] | If in a finite universe, the tree-level vacuum is a symmetric superposition of coherent states, in each of which the inflaton field assumes a different, energy-minimizing mean value (vev), then the resulting energy is positive and decreases exponentially as the volume of the universe increases. This effect can drive in... |
2405.13087 | Soham Sen | Arpita Jana, Soham Sen, and Sunandan Gangopadhyay | Atom falling into a quantum corrected charged black hole and HBAR
entropy | 12 pages LATEX, comments are welcome | Phys. Rev. D 110 (2024) 026029 | 10.1103/PhysRevD.110.026029 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In an earlier analysis
\href{https://link.aps.org/doi/10.1103/PhysRevD.105.085007}{Phys. Rev. D 105
(2022) 085007}, we have explored the event of acceleration radiation for an
atom freely falling into the event horizon of a quantum-corrected Schwarzschild
black hole. We want to explore the acceleration-radiation when... | [
{
"created": "Tue, 21 May 2024 10:51:40 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Jul 2024 18:12:52 GMT",
"version": "v2"
}
] | 2024-07-31 | [
[
"Jana",
"Arpita",
""
],
[
"Sen",
"Soham",
""
],
[
"Gangopadhyay",
"Sunandan",
""
]
] | In an earlier analysis \href{https://link.aps.org/doi/10.1103/PhysRevD.105.085007}{Phys. Rev. D 105 (2022) 085007}, we have explored the event of acceleration radiation for an atom freely falling into the event horizon of a quantum-corrected Schwarzschild black hole. We want to explore the acceleration-radiation when t... |
1507.01865 | M. Farasat Shamir | Adil Jhangeer, M. Farasat Shamir, Tayyaba Naz, Nazish Iftikhar | Classification of Cosmic Scale Factor via Noether Gauge Symmetries | 16 Pages | Int. J. Theor. Phys. 54(7): 2343-2353, 2015 | 10.1007/s10773-014-2456-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, a complete classification of Friedmann-Robertson-Walker (FRW)
spacetime by using approximate Noether approach is presented. Considered
spacetime is discussed for three different types of universe i.e. flat, open
and closed. Different forms of cosmic scale factor $a$ with respect to the
nature of the un... | [
{
"created": "Mon, 6 Jul 2015 08:51:03 GMT",
"version": "v1"
}
] | 2015-07-08 | [
[
"Jhangeer",
"Adil",
""
],
[
"Shamir",
"M. Farasat",
""
],
[
"Naz",
"Tayyaba",
""
],
[
"Iftikhar",
"Nazish",
""
]
] | In this paper, a complete classification of Friedmann-Robertson-Walker (FRW) spacetime by using approximate Noether approach is presented. Considered spacetime is discussed for three different types of universe i.e. flat, open and closed. Different forms of cosmic scale factor $a$ with respect to the nature of the univ... |
2401.01354 | Bouzenada Abdelmalek . | Faizuddin Ahmed and Abdelmalek Bouzenada | Quantum dynamics of spin-0 particles in a cosmological space-time | 15 pages; 3 figures, published in NPB; arXiv admin note: text overlap
with arXiv:2312.06615, arXiv:2312.07629 | Nuclear Physics B 1000, 116490 (2024) | 10.1016/j.nuclphysb.2024.116490 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this paper, our focus is on investigating the impact of cosmological
constant on relativistic quantum systems comprising spin-0 scalar particles.
Our analysis centers around the Klein-Gordon equation, and we obtain both
approximate and exact analytical solutions for spin-0 particles of the quantum
system. Afterwar... | [
{
"created": "Fri, 8 Dec 2023 19:44:35 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Apr 2024 10:07:02 GMT",
"version": "v2"
}
] | 2024-04-02 | [
[
"Ahmed",
"Faizuddin",
""
],
[
"Bouzenada",
"Abdelmalek",
""
]
] | In this paper, our focus is on investigating the impact of cosmological constant on relativistic quantum systems comprising spin-0 scalar particles. Our analysis centers around the Klein-Gordon equation, and we obtain both approximate and exact analytical solutions for spin-0 particles of the quantum system. Afterwards... |
2404.07274 | Parthapratim Pradhan | Parthapratim Pradhan | Bekenstein-Hawking Entropy Products for NUT class of Black Holes in AdS
Space | Accepted in IJMPA | International Journal of Modern Physics A (2024) 2450044 | 10.1142/S0217751X24500441 | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We derive the entropy product rule for
Taub-NUT~(Newman-Unti-Tamburino)-de~Sitter black hole~(BH) and
Taub-NUT--Anti-de~Sitter BH. We show that the entropy products in terms of both
the physical horizons are \emph{mass-independent}. Both \emph{perturbative}
approximation and \emph{direct} method have been considered.... | [
{
"created": "Wed, 10 Apr 2024 18:03:47 GMT",
"version": "v1"
}
] | 2024-06-04 | [
[
"Pradhan",
"Parthapratim",
""
]
] | We derive the entropy product rule for Taub-NUT~(Newman-Unti-Tamburino)-de~Sitter black hole~(BH) and Taub-NUT--Anti-de~Sitter BH. We show that the entropy products in terms of both the physical horizons are \emph{mass-independent}. Both \emph{perturbative} approximation and \emph{direct} method have been considered. B... |
0804.3323 | Neil J. Cornish | N. J. Cornish | Detection Strategies for Extreme Mass Ratio Inspirals | 10 pages, 4 figures, Updated for LISA 8 Symposium Proceedings | Class.Quant.Grav.28:094016,2011 | 10.1088/0264-9381/28/9/094016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The capture of compact stellar remnants by galactic black holes provides a
unique laboratory for exploring the near horizon geometry of the Kerr
spacetime, or possible departures from general relativity if the central cores
prove not to be black holes. The gravitational radiation produced by these
Extreme Mass Ratio ... | [
{
"created": "Mon, 21 Apr 2008 14:30:45 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Aug 2008 17:56:28 GMT",
"version": "v2"
},
{
"created": "Sat, 16 Oct 2010 14:31:51 GMT",
"version": "v3"
}
] | 2011-04-22 | [
[
"Cornish",
"N. J.",
""
]
] | The capture of compact stellar remnants by galactic black holes provides a unique laboratory for exploring the near horizon geometry of the Kerr spacetime, or possible departures from general relativity if the central cores prove not to be black holes. The gravitational radiation produced by these Extreme Mass Ratio In... |
1501.01984 | Tsvi Piran | Elly Leiderschneider and Tsvi Piran | Super-Penrose collisions are inefficient - a Comment on: Black hole
fireworks: ultra-high-energy debris from super-Penrose collisions | null | null | null | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a paper posted on the arXiv a few weeks ago Berti, Brito and Cardoso
\cite{Berti+14} suggest that ultra-high-energy particles can emerge from
collisions in a black hole's ergosphere. This can happen if the process
involves a particle on an outgoing trajectory very close to the black hole.
Clearly such a particle c... | [
{
"created": "Thu, 8 Jan 2015 21:07:00 GMT",
"version": "v1"
}
] | 2015-01-13 | [
[
"Leiderschneider",
"Elly",
""
],
[
"Piran",
"Tsvi",
""
]
] | In a paper posted on the arXiv a few weeks ago Berti, Brito and Cardoso \cite{Berti+14} suggest that ultra-high-energy particles can emerge from collisions in a black hole's ergosphere. This can happen if the process involves a particle on an outgoing trajectory very close to the black hole. Clearly such a particle can... |
gr-qc/9810035 | Shestakova Tatyana P. | V. A. Savchenko, T. P. Shestakova, G. M. Vereshkov | Quantum geometrodynamics in extended phase space - II. The Bianchi IX
model | LaTeX, 24 pages, A revised version: the comparison with the BFV
approach is given in details. For the first part of the paper, see
gr-qc/9809086 | Grav.Cosmol. 7 (2001) 102-116 | null | null | gr-qc | null | The mathematically correct approach to constructing quantum geometrodynamics
of a closed universe formulated in Part I is realized on the cosmological
Bianchi-IX model with scalar fields. The physical adequacy of the obtained
gauge-noninvariant theory to existing concepts about possible cosmological
scenarios is show... | [
{
"created": "Fri, 9 Oct 1998 12:11:17 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Nov 2000 11:24:29 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Savchenko",
"V. A.",
""
],
[
"Shestakova",
"T. P.",
""
],
[
"Vereshkov",
"G. M.",
""
]
] | The mathematically correct approach to constructing quantum geometrodynamics of a closed universe formulated in Part I is realized on the cosmological Bianchi-IX model with scalar fields. The physical adequacy of the obtained gauge-noninvariant theory to existing concepts about possible cosmological scenarios is shown.... |
gr-qc/0511141 | Eugeniu Popescu | R.B. Mann, E.M. Popescu | Scalar and tensorial topological matter coupled to (2+1)-dimensional
gravity:A.Classical theory and global charges | 40 pages | Class.Quant.Grav. 23 (2006) 3721-3746 | 10.1088/0264-9381/23/11/004 | null | gr-qc | null | We consider the coupling of scalar topological matter to (2+1)-dimensional
gravity. The matter fields consist of a 0-form scalar field and a 2-form tensor
field. We carry out a canonical analysis of the classical theory, investigating
its sectors and solutions. We show that the model admits both BTZ-like
black-hole s... | [
{
"created": "Sun, 27 Nov 2005 06:06:43 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Mann",
"R. B.",
""
],
[
"Popescu",
"E. M.",
""
]
] | We consider the coupling of scalar topological matter to (2+1)-dimensional gravity. The matter fields consist of a 0-form scalar field and a 2-form tensor field. We carry out a canonical analysis of the classical theory, investigating its sectors and solutions. We show that the model admits both BTZ-like black-hole sol... |
gr-qc/0602033 | Graham Woan | J. D. Romano and G. Woan | A principal component analysis for LISA -- the TDI connection | 7 pages, 3 figures, 1 table | Phys.Rev. D73 (2006) 102001 | 10.1103/PhysRevD.73.102001 | null | gr-qc | null | Data from the Laser Interferometer Space Antenna (LISA) is expected to be
dominated by frequency noise from its lasers. However the noise from any one
laser appears more than once in the data and there are combinations of the data
that are insensitive to this noise. These combinations, called time delay
interferometr... | [
{
"created": "Wed, 8 Feb 2006 18:04:22 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Romano",
"J. D.",
""
],
[
"Woan",
"G.",
""
]
] | Data from the Laser Interferometer Space Antenna (LISA) is expected to be dominated by frequency noise from its lasers. However the noise from any one laser appears more than once in the data and there are combinations of the data that are insensitive to this noise. These combinations, called time delay interferometry ... |
0905.0178 | Andrey Shoom A | Shohreh Abdolrahimi, Valeri P. Frolov, and Andrey A. Shoom | Interior of a Charged Distorted Black Hole | 14 pages, 11 figures. References added, typos corrected. Some minor
changes in the text | Phys.Rev.D80:024011,2009 | 10.1103/PhysRevD.80.024011 | Alberta-Thy-07-09 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study interior of a charged, non-rotating distorted black hole. We
consider static and axisymmetric black holes, and focus on a special case when
an electrically charged distorted solution is obtained by the Harrison-Ernst
transformation from an uncharged one. We demonstrate that the Cauchy horizon of
such black h... | [
{
"created": "Sat, 2 May 2009 06:22:11 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Jun 2009 00:11:33 GMT",
"version": "v2"
}
] | 2010-04-14 | [
[
"Abdolrahimi",
"Shohreh",
""
],
[
"Frolov",
"Valeri P.",
""
],
[
"Shoom",
"Andrey A.",
""
]
] | We study interior of a charged, non-rotating distorted black hole. We consider static and axisymmetric black holes, and focus on a special case when an electrically charged distorted solution is obtained by the Harrison-Ernst transformation from an uncharged one. We demonstrate that the Cauchy horizon of such black hol... |
1204.4911 | Ricardo E. Gamboa Saravi | Ricardo E. Gamboa Saravi | Empty singularities in higher-dimensional Gravity | 13 pages | Int J Theor Phys (2012) 51:3062-3072 | 10.1007/s10773-012-1189-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the exact solution of Einstein's field equations consisting of a
($n+2$)-dimensional static and hyperplane symmetric thick slice of matter, with
constant and positive energy density $\rho$ and thickness $d$, surrounded by
two different vacua. We explicitly write down the pressure and the external
gravitation... | [
{
"created": "Sun, 22 Apr 2012 16:40:46 GMT",
"version": "v1"
}
] | 2012-08-21 | [
[
"Saravi",
"Ricardo E. Gamboa",
""
]
] | We study the exact solution of Einstein's field equations consisting of a ($n+2$)-dimensional static and hyperplane symmetric thick slice of matter, with constant and positive energy density $\rho$ and thickness $d$, surrounded by two different vacua. We explicitly write down the pressure and the external gravitational... |
2307.08398 | Grigalius Taujanskas | Grigalius Taujanskas | Scattering of Maxwell potentials on curved spacetimes | 6 pages, extended abstract for arXiv:2211.14579, to appear in
Methusalem Lectures, Research Perspectives Ghent Analysis and PDE Center | null | 10.1007/978-3-031-48579-4_6 | null | gr-qc math.AP | http://creativecommons.org/licenses/by/4.0/ | We report on the recent construction of a scattering theory for Maxwell
potentials on curved spacetimes.
| [
{
"created": "Mon, 17 Jul 2023 11:31:04 GMT",
"version": "v1"
}
] | 2024-05-01 | [
[
"Taujanskas",
"Grigalius",
""
]
] | We report on the recent construction of a scattering theory for Maxwell potentials on curved spacetimes. |
1605.04332 | Casey Handmer | Casey J. Handmer, B\'ela Szil\'agyi, Jeffrey Winicour | Spectral Cauchy Characteristic Extraction of strain, news and
gravitational radiation flux | 30 pages, 17 figures | null | 10.1088/0264-9381/33/22/225007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new approach for the Cauchy-characteristic extraction of
gravitational radiation strain, news function, and the flux of the
energy-momentum, supermomentum and angular momentum associated with the
Bondi-Metzner-Sachs asymptotic symmetries. In Cauchy-characteristic extraction,
a characteristic evolution co... | [
{
"created": "Fri, 13 May 2016 21:05:56 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Jul 2016 06:34:01 GMT",
"version": "v2"
},
{
"created": "Wed, 21 Sep 2016 04:59:12 GMT",
"version": "v3"
},
{
"created": "Fri, 7 Oct 2016 06:31:46 GMT",
"version": "v4"
}
] | 2016-11-23 | [
[
"Handmer",
"Casey J.",
""
],
[
"Szilágyi",
"Béla",
""
],
[
"Winicour",
"Jeffrey",
""
]
] | We present a new approach for the Cauchy-characteristic extraction of gravitational radiation strain, news function, and the flux of the energy-momentum, supermomentum and angular momentum associated with the Bondi-Metzner-Sachs asymptotic symmetries. In Cauchy-characteristic extraction, a characteristic evolution code... |
gr-qc/0111079 | Gaston Giribet | Gaston Giribet, Claudio Simeone | Deparametrization and quantization of the Taub universe | 17 pages. Typos corrected | Int.J.Mod.Phys. A17 (2002) 2885-2896 | 10.1142/S0217751X02011370 | null | gr-qc | null | Previous analysis about the deparametrization and path integral quantization
of cosmological models are extended to models which do not admit an intrinsic
time. The formal expression for the transition amplitude is written down for
the Taub anisotropic universe with a clear notion of time. The relation
existing betwe... | [
{
"created": "Fri, 23 Nov 2001 21:11:42 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Nov 2001 16:39:41 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Giribet",
"Gaston",
""
],
[
"Simeone",
"Claudio",
""
]
] | Previous analysis about the deparametrization and path integral quantization of cosmological models are extended to models which do not admit an intrinsic time. The formal expression for the transition amplitude is written down for the Taub anisotropic universe with a clear notion of time. The relation existing between... |
1411.7247 | Hossein Ghaffarnejad | Hossein Ghaffarnejad and Hassan Niad | Weak Gravitational lensing from regular Bardeen black holes | 20 pages, 7 figures with some revisions | International Journal Of Theoretical Physics (2015) | 10.1007/s10773-015-2787-8 | null | gr-qc astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we study weak gravitational lensing of regular Bardeen black
hole which has scalar charge $g$ and mass $m.$ We investigate the angular
position and magnification of non-relativistic images in two cases depending on
the presence or absence of photon sphere. Defining dimensionless charge
parameter $q=\f... | [
{
"created": "Mon, 24 Nov 2014 18:43:12 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Nov 2014 07:17:50 GMT",
"version": "v2"
},
{
"created": "Sun, 22 Mar 2015 15:13:27 GMT",
"version": "v3"
},
{
"created": "Fri, 4 Sep 2015 07:03:42 GMT",
"version": "v4"
}
] | 2015-09-07 | [
[
"Ghaffarnejad",
"Hossein",
""
],
[
"Niad",
"Hassan",
""
]
] | In this article we study weak gravitational lensing of regular Bardeen black hole which has scalar charge $g$ and mass $m.$ We investigate the angular position and magnification of non-relativistic images in two cases depending on the presence or absence of photon sphere. Defining dimensionless charge parameter $q=\fra... |
gr-qc/0209053 | Santiago Esteban Perez Bergliaffa | M. Novello, S. E. Perez Bergliaffa, K. E. Hibberd | Analysis of static and spherically-symmetric solutions in NDL theory of
gravitation | RevTex4, 6 pages | Int.J.Mod.Phys. D13 (2004) 527-538 | 10.1142/S0218271804004608 | null | gr-qc | null | We investigate a static solution with spherical symmetry of a recently
proposed field theory of gravitation. In this so-called NDL theory, matter
interacts with gravity in accordance with the Weak Equivalence Principle, while
gravitons have a nonlinear self-interaction. It is shown that the predictions
of NDL agree w... | [
{
"created": "Tue, 17 Sep 2002 14:29:32 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Novello",
"M.",
""
],
[
"Bergliaffa",
"S. E. Perez",
""
],
[
"Hibberd",
"K. E.",
""
]
] | We investigate a static solution with spherical symmetry of a recently proposed field theory of gravitation. In this so-called NDL theory, matter interacts with gravity in accordance with the Weak Equivalence Principle, while gravitons have a nonlinear self-interaction. It is shown that the predictions of NDL agree wit... |
1607.04148 | W.J. Handley | W.J. Handley, A.N. Lasenby, M.P. Hobson | Novel quantum initial conditions for inflation | 6 pages, 1 figure, Accepted by Physical Review D | null | 10.1103/PhysRevD.94.024041 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a novel approach for setting initial conditions on the mode
functions of the Mukhanov Sazaki equation. These conditions are motivated by
minimisation of the renormalised stress-energy tensor, and are valid for
setting a vacuum state even in a context where the spacetime is changing
rapidly. Moreover, these... | [
{
"created": "Thu, 14 Jul 2016 14:28:13 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jul 2016 14:10:40 GMT",
"version": "v2"
}
] | 2016-08-24 | [
[
"Handley",
"W. J.",
""
],
[
"Lasenby",
"A. N.",
""
],
[
"Hobson",
"M. P.",
""
]
] | We present a novel approach for setting initial conditions on the mode functions of the Mukhanov Sazaki equation. These conditions are motivated by minimisation of the renormalised stress-energy tensor, and are valid for setting a vacuum state even in a context where the spacetime is changing rapidly. Moreover, these a... |
gr-qc/9806036 | Gabrielle Allen | Gabrielle Allen, Karen Camarda, Edward Seidel | Black Hole Spectroscopy: Determining Waveforms from 3D Excited Black
Holes | 4 pages, 5 figures, submitted to Phys. Rev. Lett | null | null | null | gr-qc | null | We present the first results for Cauchy nonlinear evolution of 3D,
nonaxisymmetric distorted black holes. We focus on the extraction and
verification of 3D waveforms determined by numerical relativity. We show that
the black hole evolution can be accurately followed through the ringdown
period, and comparing with a r... | [
{
"created": "Mon, 8 Jun 1998 12:09:40 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Allen",
"Gabrielle",
""
],
[
"Camarda",
"Karen",
""
],
[
"Seidel",
"Edward",
""
]
] | We present the first results for Cauchy nonlinear evolution of 3D, nonaxisymmetric distorted black holes. We focus on the extraction and verification of 3D waveforms determined by numerical relativity. We show that the black hole evolution can be accurately followed through the ringdown period, and comparing with a rec... |
1909.01047 | Jing Wang | Jing Wang | Quantum Corrections to Gravitational Potential of Scalarized Neutron
Star Binary | 10 pages, 6 figures | Eur. Phys. J. C (2019) 79:544 | 10.1140/epjc/s10052-019-7052-5 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the long-distance, low-energy, leading quantum corrections to
gravitational potential for scalarized neutron star (NS) binary systems, by
treating general relativity as an effective field theory. We neglect the
extended scales of two star components and treat them as heavy point particles,
which gravit... | [
{
"created": "Tue, 3 Sep 2019 10:32:10 GMT",
"version": "v1"
}
] | 2019-09-04 | [
[
"Wang",
"Jing",
""
]
] | We investigate the long-distance, low-energy, leading quantum corrections to gravitational potential for scalarized neutron star (NS) binary systems, by treating general relativity as an effective field theory. We neglect the extended scales of two star components and treat them as heavy point particles, which gravitat... |
2005.09607 | Anuradha Gupta | Anuradha Gupta, Sayantani Datta, Shilpa Kastha, Ssohrab Borhanian, K.
G. Arun, B. S. Sathyaprakash | Multiparameter tests of general relativity using multiband
gravitational-wave observations | 7 pages, 4 figures. v3: version published in PRL | Phys. Rev. Lett. 125, 201101 (2020) | 10.1103/PhysRevLett.125.201101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this Letter we show that multiband observations of stellar-mass binary
black holes by the next generation of ground-based observatories (3G) and the
space-based Laser Interferometer Space Antenna (LISA) would facilitate a
comprehensive test of general relativity by simultaneously measuring all the
post-Newtonian (... | [
{
"created": "Tue, 19 May 2020 17:27:30 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Oct 2020 22:05:42 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Nov 2020 19:14:13 GMT",
"version": "v3"
}
] | 2020-11-12 | [
[
"Gupta",
"Anuradha",
""
],
[
"Datta",
"Sayantani",
""
],
[
"Kastha",
"Shilpa",
""
],
[
"Borhanian",
"Ssohrab",
""
],
[
"Arun",
"K. G.",
""
],
[
"Sathyaprakash",
"B. S.",
""
]
] | In this Letter we show that multiband observations of stellar-mass binary black holes by the next generation of ground-based observatories (3G) and the space-based Laser Interferometer Space Antenna (LISA) would facilitate a comprehensive test of general relativity by simultaneously measuring all the post-Newtonian (PN... |
1706.04013 | Arianna Renzini | Arianna I. Renzini, Carlo R. Contaldi and Alan Heavens | Mapping weak lensing distortions in the Kerr metric | 16 pages, 11 figures | null | 10.1103/PhysRevD.95.124047 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein's theory of General Relativity implies that energy, i.e. matter,
curves space-time and thus deforms lightlike geodesics, giving rise to
gravitational lensing. This phenomenon is well understood in the case of the
Schwarzschild metric, and has been accurately described in the past; however,
lensing in the Ker... | [
{
"created": "Tue, 13 Jun 2017 11:40:02 GMT",
"version": "v1"
}
] | 2017-08-02 | [
[
"Renzini",
"Arianna I.",
""
],
[
"Contaldi",
"Carlo R.",
""
],
[
"Heavens",
"Alan",
""
]
] | Einstein's theory of General Relativity implies that energy, i.e. matter, curves space-time and thus deforms lightlike geodesics, giving rise to gravitational lensing. This phenomenon is well understood in the case of the Schwarzschild metric, and has been accurately described in the past; however, lensing in the Kerr ... |
gr-qc/0409010 | Leor Barack | Leor Barack and Curt Cutler | Confusion Noise from LISA Capture Sources | 26 pages, 23 eps figures; Minor typographic corrections, version to
be published in PRD | Phys.Rev. D70 (2004) 122002 | 10.1103/PhysRevD.70.122002 | null | gr-qc astro-ph | null | Captures of compact objects (COs) by massive black holes (MBHs) in galactic
nuclei will be an important source for LISA, the space-based gravitational-wave
(GW) detector. However, a large fraction of captures will not be individually
resolvable--either because they are too distant, have unfavorable orientation,
or ha... | [
{
"created": "Thu, 2 Sep 2004 14:37:22 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Dec 2004 13:54:03 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Barack",
"Leor",
""
],
[
"Cutler",
"Curt",
""
]
] | Captures of compact objects (COs) by massive black holes (MBHs) in galactic nuclei will be an important source for LISA, the space-based gravitational-wave (GW) detector. However, a large fraction of captures will not be individually resolvable--either because they are too distant, have unfavorable orientation, or have... |
1011.1982 | Puxun Wu | Zhengxiang Li, Puxun Wu and Hongwei Yu | Examining the cosmic acceleration with the latest Union2 supernova data | 17 pages, 6 figures; PLB in press | Phys.Lett.B695:1-8,2011 | 10.1016/j.physletb.2010.10.044 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this Letter, by reconstructing the $Om$ diagnostic and the deceleration
parameter $q$ from the latest Union2 Type Ia supernova sample with and without
the systematic error along with the baryon acoustic oscillation (BAO) and the
cosmic microwave background (CMB), we study the cosmic expanding history, using
the Ch... | [
{
"created": "Tue, 9 Nov 2010 06:30:59 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Jan 2011 05:37:13 GMT",
"version": "v2"
}
] | 2015-03-17 | [
[
"Li",
"Zhengxiang",
""
],
[
"Wu",
"Puxun",
""
],
[
"Yu",
"Hongwei",
""
]
] | In this Letter, by reconstructing the $Om$ diagnostic and the deceleration parameter $q$ from the latest Union2 Type Ia supernova sample with and without the systematic error along with the baryon acoustic oscillation (BAO) and the cosmic microwave background (CMB), we study the cosmic expanding history, using the Chev... |
1508.04188 | Yun Soo Myung | Yun Soo Myung, Young-Jai Park | Scale-invariant power spectra from a Weyl-invariant scalar-tensor theory | 19 pages, no figures, version to appear in EPJC. arXiv admin note:
text overlap with arXiv:1407.0441 | Eur.Phys.J. C76 (2016) 79 | 10.1140/epjc/s10052-016-3924-0 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain scale-invariant scalar and tensor power spectra from a
Weyl-invariant scalar-tensor theory in de Sitter spacetime. This implies that
the Weyl-invariance guarantees to implement the scale-invariance of power
spectrum in de Sitter spacetime. We establish a deep connection between the
Weyl-invariance of the ac... | [
{
"created": "Tue, 18 Aug 2015 01:26:43 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Feb 2016 01:34:40 GMT",
"version": "v2"
}
] | 2016-02-19 | [
[
"Myung",
"Yun Soo",
""
],
[
"Park",
"Young-Jai",
""
]
] | We obtain scale-invariant scalar and tensor power spectra from a Weyl-invariant scalar-tensor theory in de Sitter spacetime. This implies that the Weyl-invariance guarantees to implement the scale-invariance of power spectrum in de Sitter spacetime. We establish a deep connection between the Weyl-invariance of the acti... |
1911.05246 | Roman Konoplya | M. S. Churilova, R. A. Konoplya, A. Zhidenko | Arbitrarily long-lived quasinormal modes in a wormhole background | 7 pages, revtex, minor changes to match the version accepted for
publication in Physics Letters B | Phys. Lett. B802 (2020) 135207 | 10.1016/j.physletb.2020.135207 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Arbitrarily long lived modes, called quasi-resonances, are known to exist in
the spectrum of massive fields for a number of black-hole backgrounds at some
discrete values of mass of the field. Here we show that these modes also exist
in the background of wormholes, unless a wormhole has a constant red-shift
function,... | [
{
"created": "Wed, 13 Nov 2019 01:57:02 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Jan 2020 05:28:15 GMT",
"version": "v2"
}
] | 2020-01-28 | [
[
"Churilova",
"M. S.",
""
],
[
"Konoplya",
"R. A.",
""
],
[
"Zhidenko",
"A.",
""
]
] | Arbitrarily long lived modes, called quasi-resonances, are known to exist in the spectrum of massive fields for a number of black-hole backgrounds at some discrete values of mass of the field. Here we show that these modes also exist in the background of wormholes, unless a wormhole has a constant red-shift function, t... |
1609.00848 | Vasilis Oikonomou | K. Kleidis, V.K. Oikonomou | Effects of Finite-time Singularities on Gravitational Waves | To appear in Astrophysics and Space Science | null | 10.1007/s10509-016-2914-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the impact of finite-time singularities on gravitational waves, in
the context of $F(R)$ gravity. We investigate which singularities are allowed
to occur during the inflationary era, when gravitational waves are considered,
and we discuss the quantitative implications of each allowed singularity. As we
sho... | [
{
"created": "Sat, 3 Sep 2016 18:16:39 GMT",
"version": "v1"
}
] | 2016-09-28 | [
[
"Kleidis",
"K.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | We analyze the impact of finite-time singularities on gravitational waves, in the context of $F(R)$ gravity. We investigate which singularities are allowed to occur during the inflationary era, when gravitational waves are considered, and we discuss the quantitative implications of each allowed singularity. As we show,... |
2104.00544 | Behzad Eslam Panah | J. Sedaghat, S. M. Zebarjad, G. H. Bordbar, B. Eslam Panah, and R.
Moradi | Is the remnant of GW190425 a strange quark star? | 12 pages, 7 figures, 5 tables | Phys. Lett. B 833 (2022) 137388 | 10.1016/j.physletb.2022.137388 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This study investigates the effects of different QCD models on the structure
of strange quark stars (SQS). In these models, the running coupling constant
has a finite value in the infrared region of energy. By imposing some
constraints on the strange quark matter (SQM) and exploiting the analytic and
background pertu... | [
{
"created": "Fri, 19 Mar 2021 07:30:18 GMT",
"version": "v1"
},
{
"created": "Sun, 19 Dec 2021 14:08:17 GMT",
"version": "v2"
},
{
"created": "Thu, 25 Aug 2022 21:21:38 GMT",
"version": "v3"
}
] | 2022-08-29 | [
[
"Sedaghat",
"J.",
""
],
[
"Zebarjad",
"S. M.",
""
],
[
"Bordbar",
"G. H.",
""
],
[
"Panah",
"B. Eslam",
""
],
[
"Moradi",
"R.",
""
]
] | This study investigates the effects of different QCD models on the structure of strange quark stars (SQS). In these models, the running coupling constant has a finite value in the infrared region of energy. By imposing some constraints on the strange quark matter (SQM) and exploiting the analytic and background perturb... |
gr-qc/0505023 | Jorge Pullin | Rodolfo Gambini and Jorge Pullin | Discrete space-time | 16 pages, RevTex, submitted to the volume "100 Years of Relativity -
Space-time Structure: Einstein and Beyond", A. Ashtekar, ed., to be published
by World Scientific. " | null | null | LSU-REL-050405 | gr-qc | null | We review recent efforts to construct gravitational theories on discrete
space-times, usually referred to as the ``consistent discretization'' approach.
The resulting theories are free of constraints at the canonical level and
therefore allow to tackle many problems that cannot be currently addressed in
continuum qua... | [
{
"created": "Wed, 4 May 2005 17:01:20 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gambini",
"Rodolfo",
""
],
[
"Pullin",
"Jorge",
""
]
] | We review recent efforts to construct gravitational theories on discrete space-times, usually referred to as the ``consistent discretization'' approach. The resulting theories are free of constraints at the canonical level and therefore allow to tackle many problems that cannot be currently addressed in continuum quant... |
gr-qc/0606026 | Gerard Hooft 't | Gerard 't Hooft | The black hole horizon as a dynamical system | 16 pages, no figures. Presented at "Einstein's Legacy in the New
Millennium", Puri, India, 15-22 Dec. 2005. An extension of gr-qc/0504120 with
chapter added and small sign changes | Int.J.Mod.Phys. D15 (2006) 1587-1602 | 10.1142/S021827180600898X | ITP-UU-06/25, SPIN-06/21 | gr-qc | null | Interactions between outgoing Hawking particles and ingoing matter are
determined by gravitational forces and Standard Model interactions. In
particular the gravitational interactions are responsible for the unitarity of
the scattering against the horizon, as dictated by the holographic principle,
but the Standard Mo... | [
{
"created": "Tue, 6 Jun 2006 15:02:32 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Hooft",
"Gerard 't",
""
]
] | Interactions between outgoing Hawking particles and ingoing matter are determined by gravitational forces and Standard Model interactions. In particular the gravitational interactions are responsible for the unitarity of the scattering against the horizon, as dictated by the holographic principle, but the Standard Mode... |
gr-qc/0303033 | Stephen C. Anco | Stephen C. Anco | On multi-graviton and multi-gravitino gauge theories | 33 pages (latex) | Class.Quant.Grav.19:6445-6467,2002 | 10.1088/0264-9381/19/24/312 | null | gr-qc | null | This paper studies nonlinear deformations of the linear gauge theory of any
number of spin-2 and spin-3/2 fields with general formal multiplication rules
in place of standard Grassmann rules for manipulating the fields, in four
spacetime dimensions. General possibilities for multiplication rules and
coupling constant... | [
{
"created": "Sun, 9 Mar 2003 21:49:51 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Anco",
"Stephen C.",
""
]
] | This paper studies nonlinear deformations of the linear gauge theory of any number of spin-2 and spin-3/2 fields with general formal multiplication rules in place of standard Grassmann rules for manipulating the fields, in four spacetime dimensions. General possibilities for multiplication rules and coupling constants ... |
1505.04074 | Mingzhe Li | Mingzhe Li, Yicen Mou | Conformal invariant cosmological perturbations via the covariant
approach | 9 pages, the version to appear in JCAP | null | 10.1088/1475-7516/2015/10/037 | USTC-ICTS-15-04 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that some cosmological perturbations are conformal invariant.
This facilitates the studies of perturbations within some gravitational
theories alternative to general relativity, for example the scalar-tensor
theory, because it is possible to do equivalent analysis in a certain frame in
which the perturbat... | [
{
"created": "Fri, 15 May 2015 14:31:38 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Sep 2015 00:56:31 GMT",
"version": "v2"
}
] | 2015-10-21 | [
[
"Li",
"Mingzhe",
""
],
[
"Mou",
"Yicen",
""
]
] | It is known that some cosmological perturbations are conformal invariant. This facilitates the studies of perturbations within some gravitational theories alternative to general relativity, for example the scalar-tensor theory, because it is possible to do equivalent analysis in a certain frame in which the perturbatio... |
0705.3104 | Fang-Pei Chen | Fang-Pei Chen | The Dynamical Properties Derived from the More Generalized Lagrangian
Density for A Gravitational System | 31papes, no figure, submitted to GRG | null | null | null | gr-qc | null | The studies of the generalized Einstein Lagrangian densities without torsion
are extended to those of the more generalized Lagrangian densities with
torsion. The properties of the more generalized Lagrangian densities are
studied systematically and thoroughly. The dynamical laws of a gravitational
system such as the ... | [
{
"created": "Tue, 22 May 2007 08:02:32 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Chen",
"Fang-Pei",
""
]
] | The studies of the generalized Einstein Lagrangian densities without torsion are extended to those of the more generalized Lagrangian densities with torsion. The properties of the more generalized Lagrangian densities are studied systematically and thoroughly. The dynamical laws of a gravitational system such as the gr... |
1404.4492 | Alexander B. Balakin | Alexander B. Balakin and Timur Yu. Alpin | Extended axion electrodynamics: Anomalous dynamo-optical response
induced by gravitational pp-waves | 5 pages, based on talks on ICGAC-11, October, 1-5, 2013, Almaty | Gravitation and Cosmology, 20: 152 (2014) | 10.1134/S0202289314030037 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the Einstein-Maxwell-axion theory including into the Lagrangian
cross-terms of the dynamo-optical type, which are quadratic in the Maxwell
tensor, linear in the covariant derivative of the macroscopic velocity
four-vector, and linear in the pseudoscalar (axion) field or its gradient
four-vector. We classify... | [
{
"created": "Thu, 17 Apr 2014 11:26:28 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Balakin",
"Alexander B.",
""
],
[
"Alpin",
"Timur Yu.",
""
]
] | We extend the Einstein-Maxwell-axion theory including into the Lagrangian cross-terms of the dynamo-optical type, which are quadratic in the Maxwell tensor, linear in the covariant derivative of the macroscopic velocity four-vector, and linear in the pseudoscalar (axion) field or its gradient four-vector. We classify t... |
1212.3169 | T. Damour | Thibault Damour | The General Relativistic Two Body Problem and the Effective One Body
Formalism | 41 pages, 4 figures, contribution to the proceedings of the
conference "Relativity and Gravitation - 100 years after Einstein in Prague",
Prague, 25-29 June 2012 | null | 10.1007/978-3-319-06349-2_5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new analytical approach to the motion and radiation of (comparable mass)
binary systems has been introduced in 1999 under the name of Effective One Body
(EOB) formalism. We review the basic elements of this formalism, and discuss
some of its recent developments. Several recent comparisons between EOB
predictions an... | [
{
"created": "Thu, 13 Dec 2012 13:34:37 GMT",
"version": "v1"
}
] | 2015-05-27 | [
[
"Damour",
"Thibault",
""
]
] | A new analytical approach to the motion and radiation of (comparable mass) binary systems has been introduced in 1999 under the name of Effective One Body (EOB) formalism. We review the basic elements of this formalism, and discuss some of its recent developments. Several recent comparisons between EOB predictions and ... |
0706.0364 | Myungseok Yoon | Myungseok Yoon, Jihye Ha, and Wontae Kim | Entropy of Reissner-Nordstrom Black Holes with Minimal Length Revisited | 5 pages | Phys.Rev.D76:047501,2007 | 10.1103/PhysRevD.76.047501 | null | gr-qc | null | Based on the generalized uncertainty principle, we study the entropy of a
four-dimensional black hole by counting degrees of freedom near the horizon and
obtain the (finite) entropy proportional to the surface area at the horizon
without a cutoff introduced in the conventional brick-wall method.
| [
{
"created": "Mon, 4 Jun 2007 02:11:10 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Yoon",
"Myungseok",
""
],
[
"Ha",
"Jihye",
""
],
[
"Kim",
"Wontae",
""
]
] | Based on the generalized uncertainty principle, we study the entropy of a four-dimensional black hole by counting degrees of freedom near the horizon and obtain the (finite) entropy proportional to the surface area at the horizon without a cutoff introduced in the conventional brick-wall method. |
1910.10514 | Oleg Tsupko | G.S. Bisnovatyi-Kogan, O.Yu. Tsupko and V. Perlick | Shadow of black holes at local and cosmological distances | 14 pages, 16 figures; based on talk at the conference 'Multifrequency
Behaviour of High Energy Cosmic Sources - XIII - MULTIF2019'; see also our
previous papers arXiv:1804.04898, arXiv:1805.03311 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A brief illustrative discussion of the shadows of black holes at local and
cosmological distances is presented. Starting from definition of the term and
discussion of recent observations, we then investigate shadows at large,
cosmological distances. On a cosmological scale, the size of shadow observed by
comoving obs... | [
{
"created": "Tue, 22 Oct 2019 15:30:30 GMT",
"version": "v1"
}
] | 2019-10-24 | [
[
"Bisnovatyi-Kogan",
"G. S.",
""
],
[
"Tsupko",
"O. Yu.",
""
],
[
"Perlick",
"V.",
""
]
] | A brief illustrative discussion of the shadows of black holes at local and cosmological distances is presented. Starting from definition of the term and discussion of recent observations, we then investigate shadows at large, cosmological distances. On a cosmological scale, the size of shadow observed by comoving obser... |
gr-qc/0409030 | Christian Boehmer | Christian G. Boehmer | Static perfect fluid balls with given equation of state and cosmological
constant | 13 pages, LaTeX, 1 figure; new reference [7], submitted to the
Ukrainian Journal of Physics | Ukr.J.Phys. 50 (2005) 1219-1225 | null | TUW-04-28 | gr-qc math-ph math.MP | null | Static and spherically symmetric perfect fluid solutions of Einstein's field
equations with cosmological constant are analysed. After showing existence and
uniqueness of a regular solution at the centre the extension of this solution
is discussed. Then the existence of global solutions with given equation of
state an... | [
{
"created": "Tue, 7 Sep 2004 15:09:01 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Sep 2004 12:24:00 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Boehmer",
"Christian G.",
""
]
] | Static and spherically symmetric perfect fluid solutions of Einstein's field equations with cosmological constant are analysed. After showing existence and uniqueness of a regular solution at the centre the extension of this solution is discussed. Then the existence of global solutions with given equation of state and ... |
gr-qc/9710063 | Zoltan Perjes | L\'aszl\'o \'A. Gergely, Zolt\'an I. Perj\'es and M\'aty\'as Vas\'uth | Spin effects in gravitational radiation backreaction I. The
Lense-Thirring approximation | 11 pages, 1 figure | Phys.Rev. D57 (1998) 876-884 | 10.1103/PhysRevD.57.876 | null | gr-qc | null | The gravitational radiation backreaction effects are considered in the
Lense-Thirring approximation. New methods for parameterizing the orbit and for
averaging the instantaneous radiative losses are developed. To first order in
the spin S of the black hole, both in the absence and in the presence of
gravitational rad... | [
{
"created": "Sat, 11 Oct 1997 12:10:39 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Gergely",
"László Á.",
""
],
[
"Perjés",
"Zoltán I.",
""
],
[
"Vasúth",
"Mátyás",
""
]
] | The gravitational radiation backreaction effects are considered in the Lense-Thirring approximation. New methods for parameterizing the orbit and for averaging the instantaneous radiative losses are developed. To first order in the spin S of the black hole, both in the absence and in the presence of gravitational radia... |
1606.09619 | M. Alessandra Papa | The LIGO Scientific Collaboration and The Virgo Collaboration | Results of the deepest all-sky survey for continuous gravitational waves
on LIGO S6 data running on the Einstein@Home volunteer distributed computing
project | null | Phys. Rev. D 94, 102002 (2016) | 10.1103/PhysRevD.94.102002 | null | gr-qc astro-ph.IM | 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 S6 LIGO science run. The search
was possible thanks to the computing power provided by the volunteers of the
Einstein@Home distributed computing project. We find no significant signal
candidate and... | [
{
"created": "Thu, 30 Jun 2016 19:19:06 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Jul 2016 19:14:36 GMT",
"version": "v2"
}
] | 2016-11-23 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"The Virgo Collaboration",
"",
""
]
] | We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the S6 LIGO science run. The search was possible thanks to the computing power provided by the volunteers of the Einstein@Home distributed computing project. We find no significant signal candidate and s... |
gr-qc/9806010 | Bijan Saha | B. Saha | Scalar Field with Induced Nonlinearity: Regular Solutions and their
Stability | RevTex, 16 pages, 2 figures (drop.eps, inter.eps), submitted to
General Relativity and Gravitation | J.Theor.Math.Comput.Phys.2:15-26,1999 | null | null | gr-qc | null | Exact particle-like static, spherically and/or cylindrically symmetric
solutions to the equations of interacting scalar and electromagnetic field
system have been obtained within the scope of general relativity. In
particular, we considered Freedman-Robertson-Walker (FRW) space-time as an
external homogenous and isot... | [
{
"created": "Wed, 3 Jun 1998 10:21:18 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Saha",
"B.",
""
]
] | Exact particle-like static, spherically and/or cylindrically symmetric solutions to the equations of interacting scalar and electromagnetic field system have been obtained within the scope of general relativity. In particular, we considered Freedman-Robertson-Walker (FRW) space-time as an external homogenous and isotro... |
1801.05475 | Jaume Haro | Jaume de Haro and Supriya Pan | Note on bouncing backgrounds | Version accepted for publication on PRD | Phys. Rev. D 97, 103518 (2018) | 10.1103/PhysRevD.97.103518 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The theory of inflation is one of the fundamental and revolutionary
developments of modern cosmology that became able to explain many issues of
early universe in the context of the standard cosmological model (SCM).
However, the initial singularity of the universe, where physics is indefinite,
is still obscure in the... | [
{
"created": "Tue, 16 Jan 2018 20:26:51 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Jan 2018 22:01:27 GMT",
"version": "v2"
},
{
"created": "Sat, 28 Apr 2018 07:13:20 GMT",
"version": "v3"
}
] | 2018-05-23 | [
[
"de Haro",
"Jaume",
""
],
[
"Pan",
"Supriya",
""
]
] | The theory of inflation is one of the fundamental and revolutionary developments of modern cosmology that became able to explain many issues of early universe in the context of the standard cosmological model (SCM). However, the initial singularity of the universe, where physics is indefinite, is still obscure in the c... |
gr-qc/0410016 | Harald P. Pfeiffer | Harald P. Pfeiffer, Lawrence E. Kidder, Mark A. Scheel, Deirdre
Shoemaker | Initial data for Einstein's equations with superposed gravitational
waves | Version accepted by PRD; added convergence plots, expanded
discussion. 9 pages, 9 figures | Phys.Rev. D71 (2005) 024020 | 10.1103/PhysRevD.71.024020 | null | gr-qc | null | A method is presented to construct initial data for Einstein's equations as a
superposition of a gravitational wave perturbation on an arbitrary stationary
background spacetime. The method combines the conformal thin sandwich formalism
with linear gravitational waves, and allows detailed control over
characteristics ... | [
{
"created": "Mon, 4 Oct 2004 22:14:30 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Feb 2005 17:17:22 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Pfeiffer",
"Harald P.",
""
],
[
"Kidder",
"Lawrence E.",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Shoemaker",
"Deirdre",
""
]
] | A method is presented to construct initial data for Einstein's equations as a superposition of a gravitational wave perturbation on an arbitrary stationary background spacetime. The method combines the conformal thin sandwich formalism with linear gravitational waves, and allows detailed control over characteristics of... |
1206.3217 | Joel Franklin | S. Deser and J. Franklin | Symmetrically reduced Galileon equations and solutions | published version | Physical Review D 86, 047701 (2012) | 10.1103/PhysRevD.86.047701 | CALT 68-2876, BRX TH-657 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The maximally complicated arbitrary-dimensional "maximal" Galileon field
equations simplify dramatically for symmetric configurations. Thus, spherical
symmetry reduces the equations from the D- to the two-dimensional Monge-Ampere
equation, axial symmetry to its cubic extension etc. We can then obtain
explicit solutio... | [
{
"created": "Thu, 14 Jun 2012 19:21:09 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Aug 2012 22:21:14 GMT",
"version": "v2"
}
] | 2012-08-24 | [
[
"Deser",
"S.",
""
],
[
"Franklin",
"J.",
""
]
] | The maximally complicated arbitrary-dimensional "maximal" Galileon field equations simplify dramatically for symmetric configurations. Thus, spherical symmetry reduces the equations from the D- to the two-dimensional Monge-Ampere equation, axial symmetry to its cubic extension etc. We can then obtain explicit solutions... |
1202.2569 | Romualdo Tresguerres | Romualdo Tresguerres | Motion in gauge theories of gravity | 24 pages, 6 figures, revised version with minor changes | Int. J. Geom. Methods Mod. Phys., 10, 1250085 (2013) | 10.1142/S0219887812500855 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A description of motion is proposed, adapted to the composite bundle
interpretation of Poincar\'e Gauge Theory. Reference frames, relative positions
and time evolution are characterized in gauge-theoretical terms. The approach
is illustrated by an appropriate formulation of the familiar example of orbital
motion indu... | [
{
"created": "Sun, 12 Feb 2012 20:53:24 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Sep 2012 17:31:34 GMT",
"version": "v2"
}
] | 2014-03-21 | [
[
"Tresguerres",
"Romualdo",
""
]
] | A description of motion is proposed, adapted to the composite bundle interpretation of Poincar\'e Gauge Theory. Reference frames, relative positions and time evolution are characterized in gauge-theoretical terms. The approach is illustrated by an appropriate formulation of the familiar example of orbital motion induce... |
gr-qc/0108034 | Seth A. Major | Seth A. Major and Kevin L. Setter | On the Universality of the Entropy-Area Relation | 6 pages | Class.Quant.Grav. 18 (2001) 5293-5298 | 10.1088/0264-9381/18/23/322 | null | gr-qc | null | We present an argument that, for a large class of possible dynamics, a
canonical quantization of gravity will satisfy the Bekenstein-Hawking
entropy-area relation. This result holds for temperatures low compared to the
Planck temperature and for boundaries with areas large compared to Planck area.
We also relate our ... | [
{
"created": "Sat, 11 Aug 2001 01:10:21 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Major",
"Seth A.",
""
],
[
"Setter",
"Kevin L.",
""
]
] | We present an argument that, for a large class of possible dynamics, a canonical quantization of gravity will satisfy the Bekenstein-Hawking entropy-area relation. This result holds for temperatures low compared to the Planck temperature and for boundaries with areas large compared to Planck area. We also relate our de... |
2404.10400 | Qihong Huang | Qihong Huang, He Huang, Bing Xu, Kaituo Zhang and Hao Chen | Phase space analysis of the evolution of the early universe in
Einstein-Cartan theory | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we perform the phase space analysis to investigate the
evolution of the early universe in Einstein-Cartan theory. By studying the
stability of critical points in dynamical system, it is found that there exist
two stable critical points which represent an expanding solution and an
Einstein static soluti... | [
{
"created": "Tue, 16 Apr 2024 08:56:36 GMT",
"version": "v1"
}
] | 2024-04-17 | [
[
"Huang",
"Qihong",
""
],
[
"Huang",
"He",
""
],
[
"Xu",
"Bing",
""
],
[
"Zhang",
"Kaituo",
""
],
[
"Chen",
"Hao",
""
]
] | In this paper, we perform the phase space analysis to investigate the evolution of the early universe in Einstein-Cartan theory. By studying the stability of critical points in dynamical system, it is found that there exist two stable critical points which represent an expanding solution and an Einstein static solution... |
gr-qc/0607096 | Timothy Clifton | T. Clifton | Spherically Symmetric Solutions to Fourth-Order Theories of Gravity | 10 pages, published version | Class.Quant.Grav. 23 (2006) 7445 | 10.1088/0264-9381/23/24/015 | null | gr-qc | null | Gravitational theories generated from Lagrangians of the form f(R) are
considered. The spherically symmetric solutions to these equations are
discussed, paying particular attention to features that differ from the
standard Schwarzschild solution. The asymptotic form of solutions is described,
as is the lack of validi... | [
{
"created": "Sat, 22 Jul 2006 19:38:52 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Nov 2006 21:51:54 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Clifton",
"T.",
""
]
] | Gravitational theories generated from Lagrangians of the form f(R) are considered. The spherically symmetric solutions to these equations are discussed, paying particular attention to features that differ from the standard Schwarzschild solution. The asymptotic form of solutions is described, as is the lack of validity... |
0910.3934 | Vladimir Belinski | V. A. Belinski | On Tunnelling Through the Black Hole Horizon | 21 pages, new section is added | Phys. Lett. A 376, 207 (2012) | 10.1016/j.physleta.2011.11.014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown here that there is no way for particle creation to occur by
quantum tunneling through an infinitesimal neighborhood of the black hole
horizon. This result is a trivial consequence of the regularity of the horizon,
the equivalence principle and the general covariance of the relativistic theory
of gravity. ... | [
{
"created": "Tue, 20 Oct 2009 18:31:05 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jun 2012 16:41:06 GMT",
"version": "v2"
}
] | 2012-06-18 | [
[
"Belinski",
"V. A.",
""
]
] | It is shown here that there is no way for particle creation to occur by quantum tunneling through an infinitesimal neighborhood of the black hole horizon. This result is a trivial consequence of the regularity of the horizon, the equivalence principle and the general covariance of the relativistic theory of gravity. Mo... |
1608.06543 | Behzad Tahmasebzadeh | Behzad Tahmasebzadeh and Kayoomars Karami | Generalized Brans-Dicke inflation with a quartic potential | 13 pages, 6 figures | Nuclear Physics B 918 (2017) 1 | 10.1016/j.nuclphysb.2017.02.018 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within the framework of Brans-Dicke gravity, we investigate inflation with
the quartic potential, $\lambda\varphi^4/4$, in the presence of generalized
Brans-Dicke parameter $\omega_{\rm GBD}(\varphi)$. We obtain the inflationary
observables containing the scalar spectral index, the tensor-to-scalar ratio,
the running... | [
{
"created": "Sat, 20 Aug 2016 22:49:40 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Mar 2017 15:36:49 GMT",
"version": "v2"
}
] | 2017-03-14 | [
[
"Tahmasebzadeh",
"Behzad",
""
],
[
"Karami",
"Kayoomars",
""
]
] | Within the framework of Brans-Dicke gravity, we investigate inflation with the quartic potential, $\lambda\varphi^4/4$, in the presence of generalized Brans-Dicke parameter $\omega_{\rm GBD}(\varphi)$. We obtain the inflationary observables containing the scalar spectral index, the tensor-to-scalar ratio, the running o... |
1405.6998 | Seyed Hossein Hendi Dr. | Seyed Hossein Hendi and Ahmad Sheykhi | Charge rotating black string in gravitating nonlinear electromagnetic
fields | 11 pages, 3 eps figures | Physical Review D 88, 044044 (2013) | 10.1103/PhysRevD.88.044044 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a new class of charged rotating black string solutions coupled
to a nonlinear electromagnetic field in the background of anti-de Sitter
spaces. We consider two types of nonlinear electromagnetic field namely,
logarithmic and exponential forms. We investigate the geometric effects of
nonlinearity paramete... | [
{
"created": "Sat, 24 May 2014 19:02:55 GMT",
"version": "v1"
}
] | 2014-05-28 | [
[
"Hendi",
"Seyed Hossein",
""
],
[
"Sheykhi",
"Ahmad",
""
]
] | We construct a new class of charged rotating black string solutions coupled to a nonlinear electromagnetic field in the background of anti-de Sitter spaces. We consider two types of nonlinear electromagnetic field namely, logarithmic and exponential forms. We investigate the geometric effects of nonlinearity parameter ... |
gr-qc/0608018 | Robert M. Wald | Robert M. Wald | The History and Present Status of Quantum Field Theory in Curved
Spacetime | 15 pages, no figures; contribution to 7th International Conference on
the History of General Relativity | null | null | null | gr-qc hep-th | null | Quantum field theory in curved spacetime is a theory wherein matter is
treated fully in accord with the principles of quantum field theory, but
gravity is treated classically in accord with general relativity. It is not
expected to be an exact theory of nature, but it should provide a good
approximate description whe... | [
{
"created": "Thu, 3 Aug 2006 15:11:01 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Wald",
"Robert M.",
""
]
] | Quantum field theory in curved spacetime is a theory wherein matter is treated fully in accord with the principles of quantum field theory, but gravity is treated classically in accord with general relativity. It is not expected to be an exact theory of nature, but it should provide a good approximate description when ... |
1102.4863 | Daniela Doneva | Daniela D. Doneva, Ivan Zh. Stefanov, Stoytcho S. Yazadjiev | Solitons and Black Holes in a Generalized Skyrme Model with
Dilaton-Quarkonium field | 19 pages, 10 figures; v2: typos corrected, comments added | Phys.Rev.D83:124007,2011 | 10.1103/PhysRevD.83.124007 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Skyrme theory is among the viable effective theories which emerge from
low-energy limit of quantum chromodynamics. Many of its generalizations include
also a dilaton. Here we find new self-gravitating solutions, both solitons and
black holes, in a Generalized Skyrme Model (GSM) in which a dilaton is present.
The inve... | [
{
"created": "Wed, 23 Feb 2011 21:51:57 GMT",
"version": "v1"
},
{
"created": "Sat, 9 Jun 2012 20:00:36 GMT",
"version": "v2"
}
] | 2012-06-12 | [
[
"Doneva",
"Daniela D.",
""
],
[
"Stefanov",
"Ivan Zh.",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
]
] | Skyrme theory is among the viable effective theories which emerge from low-energy limit of quantum chromodynamics. Many of its generalizations include also a dilaton. Here we find new self-gravitating solutions, both solitons and black holes, in a Generalized Skyrme Model (GSM) in which a dilaton is present. The invest... |
gr-qc/0510104 | Yuri Shtanov | Petr Tretyakov, Aleksey Toporensky, Yuri Shtanov, Varun Sahni | Quantum effects, soft singularities and the fate of the universe in a
braneworld cosmology | 19 pages, 3 figures, text slightly improved and references added.
Accepted for publication in Classical and Quantum Gravity | Class.Quant.Grav.23:3259-3274,2006 | 10.1088/0264-9381/23/10/001 | null | gr-qc astro-ph hep-ph | null | We examine a class of braneworld models in which the expanding universe
encounters a "quiescent" future singularity. At a quiescent singularity, the
energy density and pressure of the cosmic fluid as well as the Hubble parameter
remain finite while all derivatives of the Hubble parameter diverge (i.e.,
${\dot H}$, ${... | [
{
"created": "Mon, 24 Oct 2005 09:33:03 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Mar 2006 22:41:03 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Tretyakov",
"Petr",
""
],
[
"Toporensky",
"Aleksey",
""
],
[
"Shtanov",
"Yuri",
""
],
[
"Sahni",
"Varun",
""
]
] | We examine a class of braneworld models in which the expanding universe encounters a "quiescent" future singularity. At a quiescent singularity, the energy density and pressure of the cosmic fluid as well as the Hubble parameter remain finite while all derivatives of the Hubble parameter diverge (i.e., ${\dot H}$, ${\d... |
2402.07482 | Marc Mars | Marc Mars | Hypersurface data: General properties and Birkhoff theorem in spherical
symmetry | 31 pages, no figures | Mediterranean Journal of Mathematics, Vol. 17, Art. num. 206
(2020) | 10.1007/s00009-020-01608-1 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The notions of (metric) hypersurface data were introduced in [Mars,2013] as a
tool to analyze, from an abstract viewpoint, hypersurfaces of arbitrary
signature in pseudo-riemannian manifolds. In this paper, general geometric
properties of these notions are studied. In particular, the properties of the
gauge group inh... | [
{
"created": "Mon, 12 Feb 2024 08:42:57 GMT",
"version": "v1"
}
] | 2024-02-13 | [
[
"Mars",
"Marc",
""
]
] | The notions of (metric) hypersurface data were introduced in [Mars,2013] as a tool to analyze, from an abstract viewpoint, hypersurfaces of arbitrary signature in pseudo-riemannian manifolds. In this paper, general geometric properties of these notions are studied. In particular, the properties of the gauge group inher... |
gr-qc/9707039 | Michael A. Clayton | M.A. Clayton | Canonical General Relativity: the Diffeomorphism constraints and Spatial
Frame Transformations | 12 pages; requires amsart, amssymb, amsmath; cleaned up slightly. To
appear in J. Math. Phys | J.Math.Phys. 39 (1998) 3805-3816 | 10.1063/1.532469 | CERN--TH/97--168 | gr-qc | null | Einstein's general relativity with both metric and vielbein treated as
independent fields is considered, demonstrating the existence of a consistent
variational principle and deriving a Hamiltonian formalism that treats the
spatial metric and spatial vielbein as canonical coordinates. This results in a
Hamiltonian in... | [
{
"created": "Wed, 16 Jul 1997 15:35:05 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Jan 1998 12:36:27 GMT",
"version": "v2"
},
{
"created": "Wed, 27 May 1998 12:33:35 GMT",
"version": "v3"
}
] | 2009-10-30 | [
[
"Clayton",
"M. A.",
""
]
] | Einstein's general relativity with both metric and vielbein treated as independent fields is considered, demonstrating the existence of a consistent variational principle and deriving a Hamiltonian formalism that treats the spatial metric and spatial vielbein as canonical coordinates. This results in a Hamiltonian in s... |
2310.20302 | Diego S\'aez-Chill\'on G\'omez | Sergei D. Odintsov, Diego S\'aez-Chill\'on G\'omez, German S. Sharov | Exponential F(R) gravity with axion dark matter | 13 pages, 3 figures. To be published in Phys. Dark Universe | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cosmological evolution within the framework of exponential $F(R)$ gravity
is analysed by assuming two forms for dark matter: (a) a standard dust-like
fluid and (b) an axion scalar field. As shown in previous literature, an
axion-like field oscillates during the cosmological evolution but can play the
role of dark... | [
{
"created": "Tue, 31 Oct 2023 09:16:07 GMT",
"version": "v1"
}
] | 2023-11-01 | [
[
"Odintsov",
"Sergei D.",
""
],
[
"Gómez",
"Diego Sáez-Chillón",
""
],
[
"Sharov",
"German S.",
""
]
] | The cosmological evolution within the framework of exponential $F(R)$ gravity is analysed by assuming two forms for dark matter: (a) a standard dust-like fluid and (b) an axion scalar field. As shown in previous literature, an axion-like field oscillates during the cosmological evolution but can play the role of dark m... |
2207.12611 | Alexander Vikman | Pavel Jirou\v{s}ek, Keigo Shimada, Alexander Vikman and Masahide
Yamaguchi | Disforming to Conformal Symmetry | 18 pages + bibliography, no figures; V3: minor changes, updated
bibliography, published version | JCAP 11 (2022) 019 | 10.1088/1475-7516/2022/11/019 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We analyse the dynamical properties of disformally transformed theories of
gravity. We show that disformal transformation typically introduces novel
degrees of freedom, equivalent to the mimetic dark matter, which possesses a
Weyl-invariant formulation. We demonstrate that this phenomenon occurs in a
wider variety of... | [
{
"created": "Tue, 26 Jul 2022 02:26:29 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Aug 2022 13:59:32 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Nov 2022 11:54:22 GMT",
"version": "v3"
}
] | 2022-11-14 | [
[
"Jiroušek",
"Pavel",
""
],
[
"Shimada",
"Keigo",
""
],
[
"Vikman",
"Alexander",
""
],
[
"Yamaguchi",
"Masahide",
""
]
] | We analyse the dynamical properties of disformally transformed theories of gravity. We show that disformal transformation typically introduces novel degrees of freedom, equivalent to the mimetic dark matter, which possesses a Weyl-invariant formulation. We demonstrate that this phenomenon occurs in a wider variety of d... |
1001.2395 | Otakar Svitek | Otakar Svitek | Existence of horizons in Robinson-Trautman spacetimes of arbitrary
dimension | to appear in proceedings of MGM12 Paris, France | null | 10.1142/9789814374552_0136 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the higher dimensional generalization of Penrose-Tod equation
describing past horizon in Robinson-Trautman spacetimes with a cosmological
constant and pure radiation. Results for D=4 dimensions are summarized.
Existence of its solutions in D>4 dimensions is proved using tools for
nonlinear elliptic partial ... | [
{
"created": "Thu, 14 Jan 2010 10:11:49 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Svitek",
"Otakar",
""
]
] | We derive the higher dimensional generalization of Penrose-Tod equation describing past horizon in Robinson-Trautman spacetimes with a cosmological constant and pure radiation. Results for D=4 dimensions are summarized. Existence of its solutions in D>4 dimensions is proved using tools for nonlinear elliptic partial di... |
1312.6684 | Muhammad Jamil Amir | M. Jamil Amir and Saima Naheed | Spatially Homogeneous Rotating Solution in f(R) Gravity and Its Energy
Contents | 10 pages | Int. J. Theor. Phys. (2013)52: 1688-1695 | 10.1007/s10773-013-1489-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, the metric approach of $f(R)$ theory of gravity is used to
investigate the exact vacuum solutions of spatially homogeneous rotating
spacetimes. For this purpose, R is replaced by f(R) in the standard
Einstein-Hilbert action and the set of modified Einstein field equations reduce
to a single equation. W... | [
{
"created": "Sun, 22 Dec 2013 06:59:37 GMT",
"version": "v1"
}
] | 2015-06-18 | [
[
"Amir",
"M. Jamil",
""
],
[
"Naheed",
"Saima",
""
]
] | In this paper, the metric approach of $f(R)$ theory of gravity is used to investigate the exact vacuum solutions of spatially homogeneous rotating spacetimes. For this purpose, R is replaced by f(R) in the standard Einstein-Hilbert action and the set of modified Einstein field equations reduce to a single equation. We ... |
1702.08381 | Stanislav Komarov | Alexander Gorbatsievich, Stanislav Komarov, Alexander Tarasenko | Optical appearance of a compact binary system in the neighbourhood of
supermassive black hole | 30 pages, 6 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Optical appearance of a compact binary star in the field of a supermassive
black hole is modeled in a strong field regime. Expressions for the redshift,
magnification coefficient and pulsar extinction time are derived.
By using the vierbein formalism we have derived equations of motion of
compact binary star in the... | [
{
"created": "Mon, 27 Feb 2017 17:08:15 GMT",
"version": "v1"
}
] | 2017-02-28 | [
[
"Gorbatsievich",
"Alexander",
""
],
[
"Komarov",
"Stanislav",
""
],
[
"Tarasenko",
"Alexander",
""
]
] | Optical appearance of a compact binary star in the field of a supermassive black hole is modeled in a strong field regime. Expressions for the redshift, magnification coefficient and pulsar extinction time are derived. By using the vierbein formalism we have derived equations of motion of compact binary star in the ext... |
2204.07871 | Cl\'audio Gomes | Cl\'audio Gomes, Kamel Ourabah | Quantum kinetic theory of Jeans instability in non-minimal
matter-curvature coupling gravity | 13 pages, 2 figures, 3 plots | null | 10.1140/epjc/s10052-023-11184-9 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We present a quantum treatment of the Jeans gravitational instability in the
Newtonian limit of the non-minimal matter-curvature coupling gravity model. By
relying on Wigner functions, allowing for the representation of quantum states
in a classical phase space, we formulate a quantum kinetic treatment of this
proble... | [
{
"created": "Sat, 16 Apr 2022 21:02:39 GMT",
"version": "v1"
}
] | 2023-01-23 | [
[
"Gomes",
"Cláudio",
""
],
[
"Ourabah",
"Kamel",
""
]
] | We present a quantum treatment of the Jeans gravitational instability in the Newtonian limit of the non-minimal matter-curvature coupling gravity model. By relying on Wigner functions, allowing for the representation of quantum states in a classical phase space, we formulate a quantum kinetic treatment of this problem,... |
1505.01791 | Otakar Svitek | T. Tahamtan, O. Svitek | Kundt spacetimes minimally coupled to scalar field | updated to published version | Eur. Phys. J. C 77 (2017) 384 | 10.1140/epjc/s10052-017-4945-z | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We derive an exact solution belonging to Kundt class of spacetimes both with
and without a cosmological constant that are minimally coupled to a free
massless scalar field. We show the algebraic type of these solutions and give
interpretation of the results. Subsequently, we look for solutions additionally
containing... | [
{
"created": "Thu, 7 May 2015 17:56:31 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jan 2016 16:59:06 GMT",
"version": "v2"
},
{
"created": "Thu, 25 May 2017 16:56:47 GMT",
"version": "v3"
},
{
"created": "Fri, 16 Jun 2017 14:10:01 GMT",
"version": "v4"
}
] | 2017-06-19 | [
[
"Tahamtan",
"T.",
""
],
[
"Svitek",
"O.",
""
]
] | We derive an exact solution belonging to Kundt class of spacetimes both with and without a cosmological constant that are minimally coupled to a free massless scalar field. We show the algebraic type of these solutions and give interpretation of the results. Subsequently, we look for solutions additionally containing a... |
1509.00911 | Aharon Davidson | Aharon Davidson, Ben Yellin | Is spacetime absolutely or just most probably Lorentzian? | 6 two column pages, 2 figures | Class. Quantum Grav. 33, 165009 (2016) | 10.1088/0264-9381/33/16/165009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Pre-gauging the cosmological scale factor $a(t)$ does not introduce
unphysical degrees of freedom into the exact FLRW classical solution. It seems
to lead, however, to a non-dynamical mini superspace. The missing ingredient, a
generalised momentum enjoying canonical Dirac (rather than Poisson) brackets
with the lapse... | [
{
"created": "Thu, 3 Sep 2015 01:24:49 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Jul 2016 17:28:19 GMT",
"version": "v2"
}
] | 2016-07-27 | [
[
"Davidson",
"Aharon",
""
],
[
"Yellin",
"Ben",
""
]
] | Pre-gauging the cosmological scale factor $a(t)$ does not introduce unphysical degrees of freedom into the exact FLRW classical solution. It seems to lead, however, to a non-dynamical mini superspace. The missing ingredient, a generalised momentum enjoying canonical Dirac (rather than Poisson) brackets with the lapse f... |
gr-qc/9611064 | Chung-I. Kuo | Chung-I Kuo(Soochow University) | A Revised Proof of the Existence of Negative Energy Density in Quantum
Field Theory | 7 pages, RevTeX file, no figures, accepted by Nuovo Cimento IL | Nuovo Cim. B112 (1997) 629-632 | null | null | gr-qc | null | Negative energy density is unavoidable in the quantum theory of field. We
give a revised proof of the existence of negative energy density unambiguously
for a massless scalar field.
| [
{
"created": "Wed, 27 Nov 1996 08:39:50 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Jan 1997 06:24:29 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Kuo",
"Chung-I",
"",
"Soochow University"
]
] | Negative energy density is unavoidable in the quantum theory of field. We give a revised proof of the existence of negative energy density unambiguously for a massless scalar field. |
2106.12356 | Ying Wang | Xin Wu, Ying Wang, Wei Sun, Fuyao Liu | Construction of explicit symplectic integrators in general relativity.
IV. Kerr black holes | 12pages,12figures | null | 10.3847/1538-4357/abfc45 | null | gr-qc astro-ph.IM nlin.CD physics.comp-ph | http://creativecommons.org/licenses/by/4.0/ | In previous papers, explicit symplectic integrators were designed for
nonrotating black holes, such as a Schwarzschild black hole. However, they fail
to work in the Kerr spacetime because not all variables can be separable, or
not all splitting parts have analytical solutions as explicit functions of
proper time. To ... | [
{
"created": "Wed, 23 Jun 2021 12:48:41 GMT",
"version": "v1"
}
] | 2021-06-24 | [
[
"Wu",
"Xin",
""
],
[
"Wang",
"Ying",
""
],
[
"Sun",
"Wei",
""
],
[
"Liu",
"Fuyao",
""
]
] | In previous papers, explicit symplectic integrators were designed for nonrotating black holes, such as a Schwarzschild black hole. However, they fail to work in the Kerr spacetime because not all variables can be separable, or not all splitting parts have analytical solutions as explicit functions of proper time. To co... |
1809.04992 | Damianos Iosifidis | Damianos Iosifidis, Christos G. Tsagas, Anastasios C. Petkou | The Raychaudhuri equation in spacetimes with torsion and non-metricity | Revised version. References added. To appear in PRD | Phys. Rev. D 98, 104037 (2018) | 10.1103/PhysRevD.98.104037 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce and develop the 1+3 covariant approach to relativity and
cosmology to spacetimes of arbitrary dimensions that have nonzero torsion and
do not satisfy the metricity condition. Focusing on timelike observers, we
identify and discuss the main differences between their kinematics and those of
their counterpa... | [
{
"created": "Thu, 13 Sep 2018 14:42:22 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Nov 2018 14:16:50 GMT",
"version": "v2"
}
] | 2018-12-05 | [
[
"Iosifidis",
"Damianos",
""
],
[
"Tsagas",
"Christos G.",
""
],
[
"Petkou",
"Anastasios C.",
""
]
] | We introduce and develop the 1+3 covariant approach to relativity and cosmology to spacetimes of arbitrary dimensions that have nonzero torsion and do not satisfy the metricity condition. Focusing on timelike observers, we identify and discuss the main differences between their kinematics and those of their counterpart... |
0903.4124 | Nakia Carlevaro | Nakia Carlevaro, Orchidea Maria Lecian, Giovanni Montani | Fermion Dynamics by Internal and Space-Time Symmetries | 10 pages, no figure | Mod.Phys.Lett.A24:415-427,2009 | 10.1142/S0217732309030199 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This manuscript is devoted to introduce a gauge theory of the Lorentz Group
based on the ambiguity emerging in dealing with isometric
diffeo-morphism-induced Lorentz transformations. The behaviors under local
transformations of fermion fields and spin connections (assumed to be ordinary
world vectors) are analyzed in... | [
{
"created": "Tue, 24 Mar 2009 16:38:01 GMT",
"version": "v1"
}
] | 2014-11-18 | [
[
"Carlevaro",
"Nakia",
""
],
[
"Lecian",
"Orchidea Maria",
""
],
[
"Montani",
"Giovanni",
""
]
] | This manuscript is devoted to introduce a gauge theory of the Lorentz Group based on the ambiguity emerging in dealing with isometric diffeo-morphism-induced Lorentz transformations. The behaviors under local transformations of fermion fields and spin connections (assumed to be ordinary world vectors) are analyzed in f... |
gr-qc/9512028 | Marcos Duarte Maia | E. M. Monte and M.D. Maia (Universidade de Bras\'ilia) | A Fundamental Theorem of Space-times | 12 pages, Latex | null | null | UnB/Mat/Fm-m495 | gr-qc | null | The fundamental theorem of submanifolds is adapted to space-times. It is
shown that the integrability conditions for the existence of submanifolds of a
pseudo-Euclidean space contain the Einstein and Yang-Mills equations.
| [
{
"created": "Thu, 14 Dec 1995 13:06:14 GMT",
"version": "v1"
}
] | 2016-08-15 | [
[
"Monte",
"E. M.",
"",
"Universidade de Brasília"
],
[
"Maia",
"M. D.",
"",
"Universidade de Brasília"
]
] | The fundamental theorem of submanifolds is adapted to space-times. It is shown that the integrability conditions for the existence of submanifolds of a pseudo-Euclidean space contain the Einstein and Yang-Mills equations. |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.