id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1711.00391 | Pablo Bueno | Pablo Bueno, Pablo A. Cano, Frederik Goelen, Thomas Hertog and Bert
Vercnocke | Echoes of Kerr-like wormholes | 17 pages, 10 figures, 1 table; v3: minor modifications to match
published version | Phys. Rev. D 97, 024040 (2018) | 10.1103/PhysRevD.97.024040 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Structure at the horizon scale of black holes would give rise to echoes of
the gravitational wave signal associated with the post-merger ringdown phase in
binary coalescences. We study the waveform of echoes in static and stationary,
traversable wormholes in which perturbations are governed by a symmetric
effective p... | [
{
"created": "Wed, 1 Nov 2017 15:26:39 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Nov 2017 13:37:23 GMT",
"version": "v2"
},
{
"created": "Wed, 31 Jan 2018 08:21:20 GMT",
"version": "v3"
}
] | 2018-02-07 | [
[
"Bueno",
"Pablo",
""
],
[
"Cano",
"Pablo A.",
""
],
[
"Goelen",
"Frederik",
""
],
[
"Hertog",
"Thomas",
""
],
[
"Vercnocke",
"Bert",
""
]
] | Structure at the horizon scale of black holes would give rise to echoes of the gravitational wave signal associated with the post-merger ringdown phase in binary coalescences. We study the waveform of echoes in static and stationary, traversable wormholes in which perturbations are governed by a symmetric effective pot... |
gr-qc/0312073 | Alan Coley | Alan Coley | Isotropic singularity in brane cosmological models | 4 pages. no figures | null | null | null | gr-qc | null | It is argued that the initial cosmological singularity is isotropic in
spatially inhomogeneous brane-world models. This implies that brane cosmology
may naturally give rise to a set of initial data that provide the conditions
for inflation to subsequently take place, consequently offering a plausible
solution to the ... | [
{
"created": "Tue, 16 Dec 2003 17:51:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Coley",
"Alan",
""
]
] | It is argued that the initial cosmological singularity is isotropic in spatially inhomogeneous brane-world models. This implies that brane cosmology may naturally give rise to a set of initial data that provide the conditions for inflation to subsequently take place, consequently offering a plausible solution to the in... |
gr-qc/9512048 | K. Kokkotas | Nils Andersson, Yasufumi Kojima and Kostas D. Kokkotas | On the oscillation spectra of ultracompact stars: An extensive survey of
gravitational-wave modes | 24 pages, AASMS.STY, 5 postscript figures, Astroph. J., in press | Astrophys.J. 462 (1996) 855 | 10.1086/177199 | null | gr-qc astro-ph | null | An extensive survey of gravitational-wave modes for uniform density stars is
presented. The study covers stars ranging in compactness from $R/M=100$ to the
limit of stability in general relativity: $R/M = 9/4$. We establish that polar
and axial gravitational-wave modes exist for all these stellar models.
Moreover, th... | [
{
"created": "Fri, 29 Dec 1995 11:58:44 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Andersson",
"Nils",
""
],
[
"Kojima",
"Yasufumi",
""
],
[
"Kokkotas",
"Kostas D.",
""
]
] | An extensive survey of gravitational-wave modes for uniform density stars is presented. The study covers stars ranging in compactness from $R/M=100$ to the limit of stability in general relativity: $R/M = 9/4$. We establish that polar and axial gravitational-wave modes exist for all these stellar models. Moreover, ther... |
2310.20043 | Koushik Chatterjee | Koushik Chatterjee, Ziri Younsi, Prashant Kocherlakota and Ramesh
Narayan | On the Universality of Energy Extraction from Black Hole Spacetimes | To be submitted to journal. Comments are welcome | null | null | null | gr-qc astro-ph.GA astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The launching of astrophysical jets provides the most compelling
observational evidence for direct extraction of black hole (BH) spin energy via
the Blandford-Znajek (BZ) mechanism. Whilst it is know that spinning Kerr BHs
within general relativity (GR) follow the BZ jet power relation, the nature of
BH energy extrac... | [
{
"created": "Mon, 30 Oct 2023 21:59:51 GMT",
"version": "v1"
}
] | 2023-11-01 | [
[
"Chatterjee",
"Koushik",
""
],
[
"Younsi",
"Ziri",
""
],
[
"Kocherlakota",
"Prashant",
""
],
[
"Narayan",
"Ramesh",
""
]
] | The launching of astrophysical jets provides the most compelling observational evidence for direct extraction of black hole (BH) spin energy via the Blandford-Znajek (BZ) mechanism. Whilst it is know that spinning Kerr BHs within general relativity (GR) follow the BZ jet power relation, the nature of BH energy extracti... |
0807.4682 | Timothy Clifton | Timothy Clifton | Higher Powers in Gravitation | 30 pages, 9 figures | Phys.Rev.D78:083501,2008 | 10.1103/PhysRevD.78.083501 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Friedmann-Robertson-Walker cosmologies of theories of gravity
that generalise the Einstein-Hilbert action by replacing the Ricci scalar, R,
with some function, f(R). The general asymptotic behaviour of these cosmologies
is found, at both early and late times, and the effects of adding higher and
lower... | [
{
"created": "Tue, 29 Jul 2008 15:14:15 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Clifton",
"Timothy",
""
]
] | We consider the Friedmann-Robertson-Walker cosmologies of theories of gravity that generalise the Einstein-Hilbert action by replacing the Ricci scalar, R, with some function, f(R). The general asymptotic behaviour of these cosmologies is found, at both early and late times, and the effects of adding higher and lower p... |
1303.4989 | Abhay Ashtekar | Abhay Ashtekar | Loop Quantum Gravity and the The Planck Regime of Cosmology | 23 pages, 4 figures. Plenary talk at the Conference: Relativity and
Gravitation: 100 Years after Einstein in Prague. To appear in the Proceedings
to be published by Edition Open Access. Summarizes results that appeared in
journal articles [2-13] | null | 10.1007/978-3-319-06349-2_16 | IGC/13-01 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The very early universe provides the best arena we currently have to test
quantum gravity theories. The success of the inflationary paradigm in
accounting for the observed inhomogeneities in the cosmic microwave background
already illustrates this point to a certain extent because the paradigm is
based on quantum fie... | [
{
"created": "Wed, 20 Mar 2013 16:48:48 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Ashtekar",
"Abhay",
""
]
] | The very early universe provides the best arena we currently have to test quantum gravity theories. The success of the inflationary paradigm in accounting for the observed inhomogeneities in the cosmic microwave background already illustrates this point to a certain extent because the paradigm is based on quantum field... |
1503.07204 | Daniel B. Thomas | Daniel B Thomas, Marco Bruni, Kazuya Koyama, Baojiu Li, Gong-Bo Zhao | f(R) gravity on non-linear scales: The post-Friedmann expansion and the
vector potential | Updated to match version published in JCAP | null | 10.1088/1475-7516/2015/07/051 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Many modified gravity theories are under consideration in cosmology as the
source of the accelerated expansion of the universe and linear perturbation
theory, valid on the largest scales, has been examined in many of these models.
However, smaller non-linear scales offer a richer phenomenology with which to
constrain... | [
{
"created": "Tue, 24 Mar 2015 21:02:27 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Nov 2015 10:47:59 GMT",
"version": "v2"
}
] | 2015-11-06 | [
[
"Thomas",
"Daniel B",
""
],
[
"Bruni",
"Marco",
""
],
[
"Koyama",
"Kazuya",
""
],
[
"Li",
"Baojiu",
""
],
[
"Zhao",
"Gong-Bo",
""
]
] | Many modified gravity theories are under consideration in cosmology as the source of the accelerated expansion of the universe and linear perturbation theory, valid on the largest scales, has been examined in many of these models. However, smaller non-linear scales offer a richer phenomenology with which to constrain m... |
2210.04657 | Chao Liu | Chao Liu | Fully nonlinear gravitational instabilities for expanding Newtonian
universes with inhomogeneous pressure and entropy: Beyond the Tolman's
solution | 18 pages, The title has been changed from v2 and v1 has been
significantly rewritten. Material added in v3 to address referee comments.
Agrees with the published version | Phys. Rev. D 107(2023), 123534 | 10.1103/PhysRevD.107.123534 | null | gr-qc astro-ph.CO math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Nonlinear gravitational instability is a crucial way to comprehend the
clustering of matter and the formation of nonlinear structures in both the
Universe and stellar systems. However, with the exception of a few exact
particular solutions for pressureless matter, there are only some
approximations and numerical and ... | [
{
"created": "Mon, 10 Oct 2022 12:59:54 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Apr 2023 02:01:46 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Jun 2023 16:01:18 GMT",
"version": "v3"
}
] | 2023-07-10 | [
[
"Liu",
"Chao",
""
]
] | Nonlinear gravitational instability is a crucial way to comprehend the clustering of matter and the formation of nonlinear structures in both the Universe and stellar systems. However, with the exception of a few exact particular solutions for pressureless matter, there are only some approximations and numerical and ph... |
1009.0586 | Azad Akhter Siddiqui Professor | Robert Beig and Azad A. Siddiqui | Uniqueness of Flat Spherically Symmetric Spacelike Hypersurfaces
Admitted by Spherically Symmetric Static Spactimes | 10 pages | Class. Quantum Grav. 24(2007)5435-5439 | 10.1088/0264-9381/24/22/008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that spherically symmetric static spacetimes admit a foliation by
{\deg}at hypersurfaces. Such foliations have explicitly been constructed for
some spacetimes, using different approaches, but none of them have proved or
even discussed the uniqueness of these foliations. The issue of uniqueness
becomes mor... | [
{
"created": "Fri, 3 Sep 2010 05:15:01 GMT",
"version": "v1"
}
] | 2015-05-19 | [
[
"Beig",
"Robert",
""
],
[
"Siddiqui",
"Azad A.",
""
]
] | It is known that spherically symmetric static spacetimes admit a foliation by {\deg}at hypersurfaces. Such foliations have explicitly been constructed for some spacetimes, using different approaches, but none of them have proved or even discussed the uniqueness of these foliations. The issue of uniqueness becomes more ... |
1604.08089 | Edisom S. Moreira Jr. | E. S. Moreira Jr | Hot scalar radiation around a cosmic string setting bounds on the
coupling parameter $\xi$ | 12 pages, 1 figure. The material has been expanded and the manuscript
matches the published version (JHEP) | JHEP 03 (2017) 105 | 10.1007/JHEP03(2017)105 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, by investigating the low temperature behaviour of a scalar
field around a cosmic string, and assuming stable thermodynamic equilibrium, it
is shown that the coupling parameter of the field with curvature must be
restricted to a certain range of values whose bounds are determined by the
deficit angle of ... | [
{
"created": "Wed, 27 Apr 2016 14:34:00 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Mar 2017 23:25:31 GMT",
"version": "v2"
}
] | 2017-03-27 | [
[
"Moreira",
"E. S.",
"Jr"
]
] | In this work, by investigating the low temperature behaviour of a scalar field around a cosmic string, and assuming stable thermodynamic equilibrium, it is shown that the coupling parameter of the field with curvature must be restricted to a certain range of values whose bounds are determined by the deficit angle of th... |
1709.06634 | Jun Zhang | Laura Sagunski, Jun Zhang, Matthew C. Johnson, Luis Lehner, Mairi
Sakellariadou, Steven L. Liebling, Carlos Palenzuela, David Neilsen | Neutron star mergers as a probe of modifications of general relativity
with finite-range scalar forces | 22 pages, 8 figures. Typos fixed, references added. Updated to match
the version accepted for publishing in PRD | Phys. Rev. D 97, 064016 (2018) | 10.1103/PhysRevD.97.064016 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Observations of gravitational radiation from compact binary systems provide
an unprecedented opportunity to test General Relativity in the strong field
dynamical regime. In this paper, we investigate how future observations of
gravitational radiation from binary neutron star mergers might provide
constraints on finit... | [
{
"created": "Tue, 19 Sep 2017 20:26:50 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Dec 2017 17:16:24 GMT",
"version": "v2"
},
{
"created": "Mon, 19 Feb 2018 20:49:03 GMT",
"version": "v3"
}
] | 2018-03-21 | [
[
"Sagunski",
"Laura",
""
],
[
"Zhang",
"Jun",
""
],
[
"Johnson",
"Matthew C.",
""
],
[
"Lehner",
"Luis",
""
],
[
"Sakellariadou",
"Mairi",
""
],
[
"Liebling",
"Steven L.",
""
],
[
"Palenzuela",
"Carlos",
""
... | Observations of gravitational radiation from compact binary systems provide an unprecedented opportunity to test General Relativity in the strong field dynamical regime. In this paper, we investigate how future observations of gravitational radiation from binary neutron star mergers might provide constraints on finite-... |
1206.6538 | Adam Pound | Adam Pound | Nonlinear gravitational self-force. I. Field outside a small body | 29 pages, typos corrected, second-order field made available at
http://www.personal.soton.ac.uk/ap8e11/second-order-fields.html | Phys. Rev. D 86, 084019 (2012) | 10.1103/PhysRevD.86.084019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A small extended body moving through an external spacetime $g_{\alpha\beta}$
creates a metric perturbation $h_{\alpha\beta}$, which forces the body away
from geodesic motion in $g_{\alpha\beta}$. The foundations of this effect,
called the gravitational self-force, are now well established, but concrete
results have m... | [
{
"created": "Wed, 27 Jun 2012 23:19:29 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Jul 2012 16:21:10 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Sep 2012 18:13:20 GMT",
"version": "v3"
}
] | 2012-10-05 | [
[
"Pound",
"Adam",
""
]
] | A small extended body moving through an external spacetime $g_{\alpha\beta}$ creates a metric perturbation $h_{\alpha\beta}$, which forces the body away from geodesic motion in $g_{\alpha\beta}$. The foundations of this effect, called the gravitational self-force, are now well established, but concrete results have mos... |
2106.06145 | Giovanni Otalora | Manuel Gonzalez-Espinoza, Ram\'on Herrera, Giovanni Otalora, Joel
Saavedra | Reconstructing inflation in scalar-torsion $f(T,\phi)$ gravity | 14 pages, 1 figure, Accepted version for publication in EPJC | null | 10.1140/epjc/s10052-021-09542-6 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is investigated the reconstruction during the slow-roll inflation in the
most general class of scalar-torsion theories whose Lagrangian density is an
arbitrary function $f(T,\phi)$ of the torsion scalar $T$ of teleparallel
gravity and the inflaton $\phi$. For the class of theories with Lagrangian
density $f(T,\phi... | [
{
"created": "Fri, 11 Jun 2021 03:04:45 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Aug 2021 22:52:00 GMT",
"version": "v2"
}
] | 2021-08-17 | [
[
"Gonzalez-Espinoza",
"Manuel",
""
],
[
"Herrera",
"Ramón",
""
],
[
"Otalora",
"Giovanni",
""
],
[
"Saavedra",
"Joel",
""
]
] | It is investigated the reconstruction during the slow-roll inflation in the most general class of scalar-torsion theories whose Lagrangian density is an arbitrary function $f(T,\phi)$ of the torsion scalar $T$ of teleparallel gravity and the inflaton $\phi$. For the class of theories with Lagrangian density $f(T,\phi)=... |
1305.1652 | Leonardo Castaneda | Monica Tatiana Rincon-Ramirez, Leonardo Castaneda | Study of cylindrically symmetric solutions in metric f(R) gravity with
constant R | 5 pages, overlap with arXiv:0810.4673 [gr-qc], added references. To
be submitted | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Solutions for cylindrically symmetric spacetimes in f(R) gravity are studied.
As a first approach, R=constant is assumed. A solution was found such that it
is equivalent to a result given by Azadi et al. for R=0 and a metric was found
for R=constant different from zero. Comparison with the case of general
relativity ... | [
{
"created": "Tue, 7 May 2013 21:30:53 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Jun 2013 16:01:34 GMT",
"version": "v2"
}
] | 2013-06-14 | [
[
"Rincon-Ramirez",
"Monica Tatiana",
""
],
[
"Castaneda",
"Leonardo",
""
]
] | Solutions for cylindrically symmetric spacetimes in f(R) gravity are studied. As a first approach, R=constant is assumed. A solution was found such that it is equivalent to a result given by Azadi et al. for R=0 and a metric was found for R=constant different from zero. Comparison with the case of general relativity wi... |
1211.2731 | Lorenzo Sindoni | Lorenzo Sindoni | Horizon thermodynamics and composite metrics | 11 pages, 1 figure | null | 10.1088/1742-6596/410/1/012140 | AEI-2012-192 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the conditions under which the thermodynamic behaviour of gravity
can be explained within an emergent gravity scenario, where the metric is
defined as a composite operator. We show that due to the availability of a
boundary of a boundary principle for the quantum effective action,
Clausius-like relations c... | [
{
"created": "Mon, 12 Nov 2012 18:54:17 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Sindoni",
"Lorenzo",
""
]
] | We examine the conditions under which the thermodynamic behaviour of gravity can be explained within an emergent gravity scenario, where the metric is defined as a composite operator. We show that due to the availability of a boundary of a boundary principle for the quantum effective action, Clausius-like relations can... |
1406.2965 | Richard T. Hammond | Richard T Hammond | Spin flip probability of electron due to torsional wave | 6 pages, 1 figure | Phys. Rev. D 90, 067501 (2014) | 10.1103/PhysRevD.90.067501 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The probability of spin flip of an electron due to a torsional wave is
calculated. It is compared to the electromagnetic case, and ways to detect
torsion are discussed.
| [
{
"created": "Wed, 11 Jun 2014 17:03:20 GMT",
"version": "v1"
}
] | 2014-09-10 | [
[
"Hammond",
"Richard T",
""
]
] | The probability of spin flip of an electron due to a torsional wave is calculated. It is compared to the electromagnetic case, and ways to detect torsion are discussed. |
1109.4187 | Richard Woodard | Sohyun Park and R. P. Woodard (University of Florida) | Inflationary Scalars Don't Affect Gravitons at One Loop | 22 pages, no figures, uses LaTeX2e, revised for publication | Phys.Rev.D84:124058,2011 | 10.1103/PhysRevD.84.124058 | UFIFT-QG-11-09 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Primordial inflation results in the production of a vast ensemble of highly
infrared, massless, minimally coupled scalars. We use a recent fully
renormalized computation of the one loop contribution to the graviton
self-energy from these scalars to show that they have no effect on the
propagation of dynamical gravito... | [
{
"created": "Mon, 19 Sep 2011 22:59:57 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Dec 2011 00:34:21 GMT",
"version": "v2"
}
] | 2012-01-04 | [
[
"Park",
"Sohyun",
"",
"University of Florida"
],
[
"Woodard",
"R. P.",
"",
"University of Florida"
]
] | Primordial inflation results in the production of a vast ensemble of highly infrared, massless, minimally coupled scalars. We use a recent fully renormalized computation of the one loop contribution to the graviton self-energy from these scalars to show that they have no effect on the propagation of dynamical gravitons... |
1610.07661 | Dharm Veer Singh | Pankaj Chaturvedi, Naveen K. Singh and Dharm Veer Singh | Reissner Nordstrom Metric in Unimodular Theory of Gravity | 12 Pages and 16 Figures | International Journal of Modern Physics D,1750082 (2017) | 10.1142/S0218271817500821 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the modified Reissner Nordstrom metric in the unimodular gravity. So
far the spherical symmetric Einstein field equation in unimodular gravity has
been studied in the absence of any source. We consider static electric and
magnetic charge as source. We solve for Maxwell equations in unimodular
gravitational b... | [
{
"created": "Mon, 24 Oct 2016 21:45:19 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Jul 2017 12:54:07 GMT",
"version": "v2"
}
] | 2017-07-26 | [
[
"Chaturvedi",
"Pankaj",
""
],
[
"Singh",
"Naveen K.",
""
],
[
"Singh",
"Dharm Veer",
""
]
] | We study the modified Reissner Nordstrom metric in the unimodular gravity. So far the spherical symmetric Einstein field equation in unimodular gravity has been studied in the absence of any source. We consider static electric and magnetic charge as source. We solve for Maxwell equations in unimodular gravitational bac... |
2003.01617 | Ira Wolfson | Ira Wolfson, Azadeh Maleknejad, Eiichiro Komatsu | How attractive is the isotropic attractor solution of axion-SU(2)
inflation? | 22 pages, 9 figures. Updated to version accepted by JCAP | null | 10.1088/1475-7516/2020/09/047 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The key to the phenomenological success of inflation models with axion and
SU(2) gauge fields is the isotropic background of the SU(2) field. Previous
studies showed that this isotropic background is an attractor solution during
inflation starting from anisotropic (Bianchi Type I) spacetime; however, not
all possible... | [
{
"created": "Tue, 3 Mar 2020 16:05:56 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Aug 2020 10:49:41 GMT",
"version": "v2"
}
] | 2020-09-30 | [
[
"Wolfson",
"Ira",
""
],
[
"Maleknejad",
"Azadeh",
""
],
[
"Komatsu",
"Eiichiro",
""
]
] | The key to the phenomenological success of inflation models with axion and SU(2) gauge fields is the isotropic background of the SU(2) field. Previous studies showed that this isotropic background is an attractor solution during inflation starting from anisotropic (Bianchi Type I) spacetime; however, not all possible i... |
2211.14267 | Petar Griggs | Petar Griggs and Puskar Mondal | On the Global Well-Posedness of the Einstein-Yang-Mills System | 33 pages | null | 10.1063/5.0136619 | null | gr-qc math-ph math.AP math.MP | http://creativecommons.org/licenses/by/4.0/ | In this paper, we present a partial result on the global well-posedness of
the Cauchy problem for the Einstein-Yang-Mills system in the constant mean
extrinsic curvature spatial harmonic and generalized Coulomb gauges as
introduced in [Mondal, arXiv:2112.14273]. We give a small-data global existence
theorem for a fam... | [
{
"created": "Fri, 25 Nov 2022 17:55:49 GMT",
"version": "v1"
}
] | 2023-07-05 | [
[
"Griggs",
"Petar",
""
],
[
"Mondal",
"Puskar",
""
]
] | In this paper, we present a partial result on the global well-posedness of the Cauchy problem for the Einstein-Yang-Mills system in the constant mean extrinsic curvature spatial harmonic and generalized Coulomb gauges as introduced in [Mondal, arXiv:2112.14273]. We give a small-data global existence theorem for a famil... |
1611.07398 | Elena Kopteva | Irina Bormotova, Elena Kopteva | Geodesic motion of test particles in Korkina-Grigoryev metric | 5 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the geodesic structure of the Korkina-Grigoryev spacetime. The
corresponding metric is a generalization of the Schwarzschild geometry to the
case involving a massless scalar field. We investigate the relation between the
angular momentum of the test particle and the charge of the field, which
determines the ... | [
{
"created": "Tue, 22 Nov 2016 16:34:15 GMT",
"version": "v1"
}
] | 2016-11-23 | [
[
"Bormotova",
"Irina",
""
],
[
"Kopteva",
"Elena",
""
]
] | We study the geodesic structure of the Korkina-Grigoryev spacetime. The corresponding metric is a generalization of the Schwarzschild geometry to the case involving a massless scalar field. We investigate the relation between the angular momentum of the test particle and the charge of the field, which determines the sh... |
1609.06665 | Jonathan Ziprick | Jonathan Ziprick, Jack Gegenberg and Gabor Kunstatter | Polymer Quantization of a Self-Gravitating Thin Shell | 23 pages, 5 figures | Phys. Rev. D 94, 104076 (2016) | 10.1103/PhysRevD.94.104076 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the quantum mechanics of self-gravitating thin shell collapse by
solving the polymerized Wheeler-DeWitt equation. We obtain the energy spectrum
and solve the time dependent equation using numerics. In contradistinction to
the continuum theory, we are able to consistently quantize the theory for
super-Plancki... | [
{
"created": "Wed, 21 Sep 2016 18:31:44 GMT",
"version": "v1"
}
] | 2016-12-07 | [
[
"Ziprick",
"Jonathan",
""
],
[
"Gegenberg",
"Jack",
""
],
[
"Kunstatter",
"Gabor",
""
]
] | We study the quantum mechanics of self-gravitating thin shell collapse by solving the polymerized Wheeler-DeWitt equation. We obtain the energy spectrum and solve the time dependent equation using numerics. In contradistinction to the continuum theory, we are able to consistently quantize the theory for super-Planckian... |
gr-qc/0003050 | Juan A. Valiente | R. Lazkoz and J. A. Valiente Kroon (Queen Mary & Westfield College,
London) | Boost-rotation symmetric type D radiative metrics in Bondi coordinates | null | Phys.Rev. D62 (2000) 084033 | 10.1103/PhysRevD.62.084033 | null | gr-qc | null | The asymptotic properties of the solutions to the Einstein-Maxwell equations
with boost-rotation symmetry and Petrov type D are studied. We find series
solutions to the pertinent set of equations which are suitable for a late time
descriptions in coordinates which are well adapted for the description of the
radiative... | [
{
"created": "Mon, 13 Mar 2000 15:52:48 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Lazkoz",
"R.",
"",
"Queen Mary & Westfield College,\n London"
],
[
"Kroon",
"J. A. Valiente",
"",
"Queen Mary & Westfield College,\n London"
]
] | The asymptotic properties of the solutions to the Einstein-Maxwell equations with boost-rotation symmetry and Petrov type D are studied. We find series solutions to the pertinent set of equations which are suitable for a late time descriptions in coordinates which are well adapted for the description of the radiative p... |
1701.04228 | Soumya Chakrabarti | Soumya Chakrabarti | Scalar Field Collapse with an exponential potential | 11 pages, 2 figures; accepted for publication in Gen. Relativ. Gravit | null | 10.1007/s10714-017-2186-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An analogue of the Oppenheimer-Synder collapsing model is treated
analytically, where the matter source is a scalar field with an exponential
potential. An exact solution is derived followed by matching to a suitable
exterior geometry, and an analysis of the visibility of the singularity. In
some situations, the coll... | [
{
"created": "Mon, 16 Jan 2017 10:29:09 GMT",
"version": "v1"
}
] | 2017-02-08 | [
[
"Chakrabarti",
"Soumya",
""
]
] | An analogue of the Oppenheimer-Synder collapsing model is treated analytically, where the matter source is a scalar field with an exponential potential. An exact solution is derived followed by matching to a suitable exterior geometry, and an analysis of the visibility of the singularity. In some situations, the collap... |
2007.00983 | Cecilia Gergely | Cec\'ilia Gergely, Zolt\'an Keresztes and L\'aszl\'o \'Arp\'ad Gergely | Hamiltonian dynamics of doubly-foliable space-times | 7 pages, 1 figure, this article belongs to the Special Issue BGL2017:
10th Bolyai-Gauss-Lobachevsky Conference on Non-Euclidean Geometry and Its
Applications | Universe 2018, 4(1), 9 | 10.3390/universe4010009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The 2+1+1 decomposition of space-time is useful in monitoring the temporal
evolution of gravitational perturbations/waves in space-times with a spatial
direction singled-out by symmetries. Such an approach based on a perpendicular
double foliation has been employed in the framework of dark matter and dark
energy moti... | [
{
"created": "Thu, 2 Jul 2020 09:34:38 GMT",
"version": "v1"
}
] | 2020-07-03 | [
[
"Gergely",
"Cecília",
""
],
[
"Keresztes",
"Zoltán",
""
],
[
"Gergely",
"László Árpád",
""
]
] | The 2+1+1 decomposition of space-time is useful in monitoring the temporal evolution of gravitational perturbations/waves in space-times with a spatial direction singled-out by symmetries. Such an approach based on a perpendicular double foliation has been employed in the framework of dark matter and dark energy motiva... |
gr-qc/0506042 | Friedrich W. Hehl | F.W. Hehl, Yu.N. Obukhov, G.F. Rubilar, and M. Blagojevic | On the theory of the skewon field: From electrodynamics to gravity | latex-file, 15 pages, 1 figure | Phys.Lett. A347 (2005) 14-24 | 10.1016/j.physleta.2005.06.033 | null | gr-qc hep-th physics.class-ph | null | The Maxwell equations expressed in terms of the excitation $\H=({\cal H},
{\cal D})$ and the field strength $F=(E,B)$ are metric-free and require an
additional constitutive law in order to represent a complete set of field
equations. In vacuum, we call this law the ``spacetime relation''. We assume it
to be local and... | [
{
"created": "Tue, 7 Jun 2005 13:04:39 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Hehl",
"F. W.",
""
],
[
"Obukhov",
"Yu. N.",
""
],
[
"Rubilar",
"G. F.",
""
],
[
"Blagojevic",
"M.",
""
]
] | The Maxwell equations expressed in terms of the excitation $\H=({\cal H}, {\cal D})$ and the field strength $F=(E,B)$ are metric-free and require an additional constitutive law in order to represent a complete set of field equations. In vacuum, we call this law the ``spacetime relation''. We assume it to be local and l... |
2203.14320 | Wei-Liang Qian | Shui-Fa Shen and Wei-Liang Qian and Kai Lin and Cheng-Gang Shao and Yu
Pan | Matrix method for perturbed black hole metric with discontinuity | 16 pages, 3 figures, and 4 tables | null | 10.1088/1361-6382/ac95f1 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent studies based on the notion of black hole pseudospectrum indicated
substantial instability of the fundamental and high-overtone quasinormal modes.
Besides its theoretical novelty, the details about the migration of the
quasinormal mode spectrum due to specific perturbations may furnish valuable
information on ... | [
{
"created": "Sun, 27 Mar 2022 14:49:58 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Sep 2022 20:06:21 GMT",
"version": "v2"
}
] | 2022-11-23 | [
[
"Shen",
"Shui-Fa",
""
],
[
"Qian",
"Wei-Liang",
""
],
[
"Lin",
"Kai",
""
],
[
"Shao",
"Cheng-Gang",
""
],
[
"Pan",
"Yu",
""
]
] | Recent studies based on the notion of black hole pseudospectrum indicated substantial instability of the fundamental and high-overtone quasinormal modes. Besides its theoretical novelty, the details about the migration of the quasinormal mode spectrum due to specific perturbations may furnish valuable information on th... |
1905.00394 | Akash Kumar Mishra | Akash K Mishra and Sudipta Sarkar | Overcharging a multi black hole system and cosmic censorship | 10 pages, No figure, Published in PRD, Reference updated | Phys. Rev. D 100, 024030 (2019) | 10.1103/PhysRevD.100.024030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the generalization of the gadenken experiment of overcharging an
extremal black hole proposed by Wald in the context of a multi black hole
solution. In particular, we attempt to overcharge a system of two extremal
black holes via test particle absorption to produce a system involving a black
hole and a naked... | [
{
"created": "Wed, 1 May 2019 17:30:17 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Jul 2019 13:00:57 GMT",
"version": "v2"
}
] | 2019-07-22 | [
[
"Mishra",
"Akash K",
""
],
[
"Sarkar",
"Sudipta",
""
]
] | We study the generalization of the gadenken experiment of overcharging an extremal black hole proposed by Wald in the context of a multi black hole solution. In particular, we attempt to overcharge a system of two extremal black holes via test particle absorption to produce a system involving a black hole and a naked s... |
1812.10615 | Makoto Tsuneto | Makoto Tsuneto, Asuka Ito, Toshifumi Noumi, and Jiro Soda | Searching for Bispectrum of Stochastic Gravitational Waves with Pulsar
Timing Arrays | 25 pages, 9 figures | null | 10.1088/1475-7516/2019/03/032 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study how to probe bispectra of stochastic gravitational waves with pulsar
timing arrays. The bispectrum is a key to probe the origin of stochastic
gravitational waves. In particular, the shape of the bispectrum carries
valuable information of inflation models. We show that an appropriate filter
function for three... | [
{
"created": "Thu, 27 Dec 2018 03:57:12 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Jan 2019 08:22:33 GMT",
"version": "v2"
},
{
"created": "Tue, 5 Mar 2019 16:03:15 GMT",
"version": "v3"
}
] | 2019-03-25 | [
[
"Tsuneto",
"Makoto",
""
],
[
"Ito",
"Asuka",
""
],
[
"Noumi",
"Toshifumi",
""
],
[
"Soda",
"Jiro",
""
]
] | We study how to probe bispectra of stochastic gravitational waves with pulsar timing arrays. The bispectrum is a key to probe the origin of stochastic gravitational waves. In particular, the shape of the bispectrum carries valuable information of inflation models. We show that an appropriate filter function for three p... |
2205.07530 | Zheng-Wen Long | Yi Yang, Dong Liu, Ali \"Ovg\"un, Zheng-Wen Long, Zhaoyi Xu | Quasinormal modes of Kerr-like black bounce spacetime | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quasinormal modes of the Kerr-like black bounce spacetime under the
scalar field perturbations are studied. We derive the effective potential of
scalar perturbation in Kerr-like black bounce spacetime, and study the
influence of Kerr-like black bounce spacetime parameters on quasinormal modes
by using WKB method ... | [
{
"created": "Mon, 16 May 2022 09:09:20 GMT",
"version": "v1"
}
] | 2022-05-17 | [
[
"Yang",
"Yi",
""
],
[
"Liu",
"Dong",
""
],
[
"Övgün",
"Ali",
""
],
[
"Long",
"Zheng-Wen",
""
],
[
"Xu",
"Zhaoyi",
""
]
] | The quasinormal modes of the Kerr-like black bounce spacetime under the scalar field perturbations are studied. We derive the effective potential of scalar perturbation in Kerr-like black bounce spacetime, and study the influence of Kerr-like black bounce spacetime parameters on quasinormal modes by using WKB method an... |
2112.11533 | Robert Nesbet | R. K. Nesbet | Weyl conformal symmetry model of the dark galactic halo | 4pp accepted by MDPI Galaxies. arXiv admin note: substantial text
overlap with arXiv:2112.10770 | MDPI Galaxies 2022, 10, 49 | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The postulate of universal conformal (local Weyl scaling) symmetry modifies
both general relativity and the Higgs scalar field model. The conformal Higgs
model (CHM) generates an effective cosmological constant that fits observed
accelerating Hubble expansion for redshifts $z\leq 1$ (7.33 Gyr) accurately
with only on... | [
{
"created": "Mon, 20 Dec 2021 00:31:14 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Mar 2022 22:52:16 GMT",
"version": "v2"
}
] | 2022-03-21 | [
[
"Nesbet",
"R. K.",
""
]
] | The postulate of universal conformal (local Weyl scaling) symmetry modifies both general relativity and the Higgs scalar field model. The conformal Higgs model (CHM) generates an effective cosmological constant that fits observed accelerating Hubble expansion for redshifts $z\leq 1$ (7.33 Gyr) accurately with only one ... |
1106.1679 | Arundhati Dasgupta | Arundhati Dasgupta | The Measure in Euclidean Quantum Gravity | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article a description is given of the measure in Euclidean
path-integral in quantum gravity, and recent results using the Faddeev-Popov
method of gauge fixing. The results suggest that the effective action is finite
and positive.
| [
{
"created": "Wed, 8 Jun 2011 21:58:59 GMT",
"version": "v1"
}
] | 2011-06-10 | [
[
"Dasgupta",
"Arundhati",
""
]
] | In this article a description is given of the measure in Euclidean path-integral in quantum gravity, and recent results using the Faddeev-Popov method of gauge fixing. The results suggest that the effective action is finite and positive. |
gr-qc/0412042 | Ewa Czuchry | E. Czuchry, J. Jezierski and J. Kijowski | Dynamics of gravitational field within a wave front and thermodynamics
of black holes | 14 pages, 2 figures | Phys.Rev. D70 (2004) 124010 | 10.1103/PhysRevD.70.124010 | null | gr-qc | null | Hamiltonian dynamics of gravitational field contained in a spacetime region
with boundary $S$ being a null-like hypersurface (a wave front) is discussed.
Complete Hamiltonian formula for the dynamics (with no surface integrals
neglected) is derived. A quasi-local proof of the first law of black holes
thermodynamics i... | [
{
"created": "Thu, 9 Dec 2004 13:09:10 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Czuchry",
"E.",
""
],
[
"Jezierski",
"J.",
""
],
[
"Kijowski",
"J.",
""
]
] | Hamiltonian dynamics of gravitational field contained in a spacetime region with boundary $S$ being a null-like hypersurface (a wave front) is discussed. Complete Hamiltonian formula for the dynamics (with no surface integrals neglected) is derived. A quasi-local proof of the first law of black holes thermodynamics is ... |
2405.11296 | Irfan Javed | Viqar Husain, Irfan Javed, Sanjeev Seahra, and Nomaan X | Entanglement production through a cosmological bounce | 8 pages, 2 figures; this essay received an honorable mention in the
2024 Gravity Research Foundation competition | null | null | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | In quantum gravity, it is expected that the Big Bang singularity is resolved
and the universe undergoes a bounce. We find that for generic initial data,
matter-gravity entanglement entropy rises rapidly during the bounce, declines,
and then approaches a steady-state value following the bounce. These
observations sugg... | [
{
"created": "Sat, 18 May 2024 13:44:32 GMT",
"version": "v1"
}
] | 2024-05-21 | [
[
"Husain",
"Viqar",
""
],
[
"Javed",
"Irfan",
""
],
[
"Seahra",
"Sanjeev",
""
],
[
"X",
"Nomaan",
""
]
] | In quantum gravity, it is expected that the Big Bang singularity is resolved and the universe undergoes a bounce. We find that for generic initial data, matter-gravity entanglement entropy rises rapidly during the bounce, declines, and then approaches a steady-state value following the bounce. These observations sugges... |
gr-qc/0401018 | Sergio Dain | S. Dain | On black holes as inner boundaries for the constraint equations | 8 pages. Seventh Hungarian Relativity Workshop, Sarospatak, Hungary,
10-15 August, 2003. To appear in the proceedings; isbn: 9789630581875 | Relativity Today, Proceedings of the Seventh Hungarian Relativity
Workshop, pages 19-27, 2004 | null | null | gr-qc | null | General aspects of the boundary value problem for the constraint equations
and their application to black holes are discussed.
| [
{
"created": "Wed, 7 Jan 2004 13:41:33 GMT",
"version": "v1"
}
] | 2009-12-07 | [
[
"Dain",
"S.",
""
]
] | General aspects of the boundary value problem for the constraint equations and their application to black holes are discussed. |
1712.10045 | Philippe G. LeFloch | Philippe G. LeFloch and Yue Ma | Nonlinear stability of self-gravitating massive fields | 136 pages | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the global evolution problem for Einstein's field equations in
the near-Minkowski regime and study the long-time dynamics of a massive scalar
field evolving under its own gravitational field. We establish the existence of
a globally hyperbolic Cauchy development associated with any initial data set
that i... | [
{
"created": "Thu, 28 Dec 2017 20:11:57 GMT",
"version": "v1"
},
{
"created": "Sun, 13 Feb 2022 17:21:25 GMT",
"version": "v2"
},
{
"created": "Mon, 14 Nov 2022 10:15:15 GMT",
"version": "v3"
},
{
"created": "Tue, 5 Mar 2024 16:45:09 GMT",
"version": "v4"
}
] | 2024-03-06 | [
[
"LeFloch",
"Philippe G.",
""
],
[
"Ma",
"Yue",
""
]
] | We consider the global evolution problem for Einstein's field equations in the near-Minkowski regime and study the long-time dynamics of a massive scalar field evolving under its own gravitational field. We establish the existence of a globally hyperbolic Cauchy development associated with any initial data set that is ... |
gr-qc/9405059 | P. Suntharothok-Priesmeyer | L. P. Grishchuk | Density Perturbations of Quantum Mechanical Origin and Anisotropy of the
Microwave Background | 53 pages, RevTeX, WUGRAV-94-4, (Received by Phys. Rev. D on March 17,
1994) | Phys.Rev.D50:7154-7172,1994 | 10.1103/PhysRevD.50.7154 | null | gr-qc astro-ph | null | If the large-angular-scale anisotropy in the cosmic microwave background
radiation is caused by the long-wavelength cosmological perturbations of
quantum mechanical origin, they are, most likely, gravitational waves, rather
than density perturbations or rotational perturbations.
| [
{
"created": "Wed, 25 May 1994 16:41:59 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Grishchuk",
"L. P.",
""
]
] | If the large-angular-scale anisotropy in the cosmic microwave background radiation is caused by the long-wavelength cosmological perturbations of quantum mechanical origin, they are, most likely, gravitational waves, rather than density perturbations or rotational perturbations. |
2105.00300 | Breno Giacchini | Breno L. Giacchini, Tib\'erio de Paula Netto, Leonardo Modesto | Action principle selection of regular black holes | 12 pages, 1 figure. V2: references added, presentation improved;
matches the published version | Phys. Rev. D 104, 084072 (2021) | 10.1103/PhysRevD.104.084072 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We elaborate on the role of higher-derivative curvature invariants as a
quantum selection mechanism of regular spacetimes in the framework of the
Lorentzian path integral approach to quantum gravity. We show that for a large
class of black hole metrics prominently regular there are higher-derivative
curvature invaria... | [
{
"created": "Sat, 1 May 2021 16:44:45 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Oct 2021 10:05:47 GMT",
"version": "v2"
}
] | 2021-10-22 | [
[
"Giacchini",
"Breno L.",
""
],
[
"Netto",
"Tibério de Paula",
""
],
[
"Modesto",
"Leonardo",
""
]
] | We elaborate on the role of higher-derivative curvature invariants as a quantum selection mechanism of regular spacetimes in the framework of the Lorentzian path integral approach to quantum gravity. We show that for a large class of black hole metrics prominently regular there are higher-derivative curvature invariant... |
2402.01838 | Thomas W. Baumgarte | Thomas W. Baumgarte and Stuart L. Shapiro | Primordial black hole capture, gravitational wave beats, and the nuclear
equation of state | 13 pages (including 6 pages of supplemental material), 1 figure | null | null | null | gr-qc astro-ph.HE nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Primordial black holes (PBHs), if captured by neutron stars (NSs), would emit
a characteristic gravitational wave (GW) signal as they orbit inside the host
star. We identify a specific and qualitatively new feature of these signals,
namely quasi-periodic beats caused by the precession of noncircular PBH orbits.
We de... | [
{
"created": "Fri, 2 Feb 2024 19:00:08 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jul 2024 20:47:32 GMT",
"version": "v2"
}
] | 2024-07-11 | [
[
"Baumgarte",
"Thomas W.",
""
],
[
"Shapiro",
"Stuart L.",
""
]
] | Primordial black holes (PBHs), if captured by neutron stars (NSs), would emit a characteristic gravitational wave (GW) signal as they orbit inside the host star. We identify a specific and qualitatively new feature of these signals, namely quasi-periodic beats caused by the precession of noncircular PBH orbits. We demo... |
1302.4871 | Orlando Luongo | Alejandro Aviles, Alessandro Bravetti, Salvatore Capozziello and
Orlando Luongo | Cosmographic reconstruction of $f(\mathcal{T})$ cosmology | Accepted in Phys. Rev. D | null | 10.1103/PhysRevD.87.064025 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A cosmographic reconstruction of $f(\mathcal T)$ models is here revised in a
model independent way by fixing observational bounds on the most relevant terms
of the $f(\mathcal T)$ Taylor expansion. We relate the $f(\mathcal T)$ models
and their derivatives to the cosmographic parameters and then adopt a Monte
Carlo a... | [
{
"created": "Wed, 20 Feb 2013 11:02:15 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Aviles",
"Alejandro",
""
],
[
"Bravetti",
"Alessandro",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"Luongo",
"Orlando",
""
]
] | A cosmographic reconstruction of $f(\mathcal T)$ models is here revised in a model independent way by fixing observational bounds on the most relevant terms of the $f(\mathcal T)$ Taylor expansion. We relate the $f(\mathcal T)$ models and their derivatives to the cosmographic parameters and then adopt a Monte Carlo ana... |
gr-qc/9601030 | Andrew M. Abrahams | Y. Choquet-Bruhat and J.W. York, Jr | Mixed Elliptic and Hyperbolic Systems for the Einstein Equations | tex, 14 pages, no figures | null | null | null | gr-qc | null | We analyse the mathematical underpinnings of a mixed hyperbolic-elliptic form
of the Einstein equations of motion in which the lapse function is determined
by specified mean curvature and the shift is arbitrary. We also examine a new
recently-published first order symmetric hyperbolic form of the equations of
motion.... | [
{
"created": "Sat, 20 Jan 1996 20:41:41 GMT",
"version": "v1"
}
] | 2012-08-27 | [
[
"Choquet-Bruhat",
"Y.",
""
],
[
"York,",
"J. W.",
"Jr"
]
] | We analyse the mathematical underpinnings of a mixed hyperbolic-elliptic form of the Einstein equations of motion in which the lapse function is determined by specified mean curvature and the shift is arbitrary. We also examine a new recently-published first order symmetric hyperbolic form of the equations of motion. T... |
1811.06834 | Kazuharu Bamba | Gauranga C. Samanta, Nisha Godani and Kazuharu Bamba | Traversable Wormholes with Exponential Shape Function in Modified
Gravity and in General Relativity: A Comparative Study | 24 pages, 4 figures, version accepted for publication in the
International Journal of Modern Physics D | null | null | FU-PCG-50 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have proposed a novel shape function on which the metric that models
traversable wormholes is dependent. Using this shape function, the energy
conditions, equation of state and anisotropy parameter are analyzed in $f(R)$
gravity, $f(R,T)$ gravity and general relativity. Furthermore, the consequences
obtained with ... | [
{
"created": "Wed, 14 Nov 2018 12:21:53 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Oct 2019 17:36:00 GMT",
"version": "v2"
},
{
"created": "Mon, 18 May 2020 11:21:08 GMT",
"version": "v3"
}
] | 2020-05-19 | [
[
"Samanta",
"Gauranga C.",
""
],
[
"Godani",
"Nisha",
""
],
[
"Bamba",
"Kazuharu",
""
]
] | We have proposed a novel shape function on which the metric that models traversable wormholes is dependent. Using this shape function, the energy conditions, equation of state and anisotropy parameter are analyzed in $f(R)$ gravity, $f(R,T)$ gravity and general relativity. Furthermore, the consequences obtained with re... |
0801.2279 | Hernando Quevedo | J.L. Alvarez, H. Quevedo and A. Sanchez | Unified geometric description of black hole thermodynamics | null | Phys.Rev.D77:084004,2008 | 10.1103/PhysRevD.77.084004 | null | gr-qc hep-th | null | In the space of thermodynamic equilibrium states we introduce a Legendre
invariant metric which contains all the information about the thermodynamics of
black holes. The curvature of this thermodynamic metric becomes singular at
those points where, according to the analysis of the heat capacities, phase
transitions o... | [
{
"created": "Tue, 15 Jan 2008 12:34:31 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Alvarez",
"J. L.",
""
],
[
"Quevedo",
"H.",
""
],
[
"Sanchez",
"A.",
""
]
] | In the space of thermodynamic equilibrium states we introduce a Legendre invariant metric which contains all the information about the thermodynamics of black holes. The curvature of this thermodynamic metric becomes singular at those points where, according to the analysis of the heat capacities, phase transitions occ... |
gr-qc/9703071 | Hing Tong Cho | Hing Tong Cho | Post-Newtonian Approximation for Spinning Particles | 18 pages, no figures, Revtex | Class.Quant.Grav. 15 (1998) 2465-2478 | null | null | gr-qc | null | Using an energy-momentum tensor for spinning particles due to Dixon and
Bailey-Israel, we develop the post-Newtonian approximation for N spinning
particles in a self-contained manner. The equations of motion are derived
directly from this energy-momentum tensor. Following the formalism of Epstein-
Wagoner, we also ob... | [
{
"created": "Tue, 25 Mar 1997 10:58:16 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cho",
"Hing Tong",
""
]
] | Using an energy-momentum tensor for spinning particles due to Dixon and Bailey-Israel, we develop the post-Newtonian approximation for N spinning particles in a self-contained manner. The equations of motion are derived directly from this energy-momentum tensor. Following the formalism of Epstein- Wagoner, we also obta... |
gr-qc/0212033 | Jorge Pullin | Rodolfo Gambini, Jorge Pullin | Discrete quantum gravity: applications to cosmology | 19 pages, RevTex, 9 figures | Class.Quant.Grav. 20 (2003) 3341 | 10.1088/0264-9381/20/15/305 | LSU-REL-120702 | gr-qc astro-ph hep-lat hep-th | null | We consider the application of the consistent lattice quantum gravity
approach we introduced recently to the situation of a Friedmann cosmology and
also to Bianchi cosmological models. This allows us to work out in detail the
computations involved in the determination of the Lagrange multipliers that
impose consisten... | [
{
"created": "Sat, 7 Dec 2002 15:53:36 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Gambini",
"Rodolfo",
""
],
[
"Pullin",
"Jorge",
""
]
] | We consider the application of the consistent lattice quantum gravity approach we introduced recently to the situation of a Friedmann cosmology and also to Bianchi cosmological models. This allows us to work out in detail the computations involved in the determination of the Lagrange multipliers that impose consistency... |
gr-qc/0201088 | Marc Mars | Marc Mars | New Non-Separable Diagonal Cosmologies | Latex, no figures | Class.Quant.Grav. 12 (1995) 2831-2847 | 10.1088/0264-9381/12/11/013 | null | gr-qc | null | We find all the perfect fluid G2 diagonal cosmologies with the property that
the quotient of the norms of the two orthogonal Killing vectors is constant
along each fluid world-line. We find four different families depending each one
on two or three arbitrary parameters which satisfy that the metric coefficients
are n... | [
{
"created": "Mon, 28 Jan 2002 21:41:31 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Mars",
"Marc",
""
]
] | We find all the perfect fluid G2 diagonal cosmologies with the property that the quotient of the norms of the two orthogonal Killing vectors is constant along each fluid world-line. We find four different families depending each one on two or three arbitrary parameters which satisfy that the metric coefficients are not... |
1307.5618 | Dawood Kothawala Dr. | Dawood Kothawala | Minimal Length and Small Scale Structure of Spacetime | v3: 6 pages; added details and a discussion on the relationship
between minimal length and maximal acceleration; final version to appear in
Phys. Rev. D | Phys. Rev. D 88, 104029 (2013) | 10.1103/PhysRevD.88.104029 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Many generic arguments support the existence of a minimum spacetime interval
$L_0$. Such a "zero-point" length can be naturally introduced in a locally
Lorentz invariant manner via Synge's world function bi-scalar $\Omega(p,P)$
which measures squared geodesic interval between spacetime events $p$ and $P$.
I show that... | [
{
"created": "Mon, 22 Jul 2013 08:14:55 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Jul 2013 09:08:08 GMT",
"version": "v2"
},
{
"created": "Mon, 18 Nov 2013 13:38:59 GMT",
"version": "v3"
}
] | 2013-12-13 | [
[
"Kothawala",
"Dawood",
""
]
] | Many generic arguments support the existence of a minimum spacetime interval $L_0$. Such a "zero-point" length can be naturally introduced in a locally Lorentz invariant manner via Synge's world function bi-scalar $\Omega(p,P)$ which measures squared geodesic interval between spacetime events $p$ and $P$. I show that t... |
1903.06344 | Miguel Angel Garc\'ia-Aspeitia | Miguel A. Garc\'ia-Aspeitia, C. Mart\'inez-Robles, A.
Hern\'andez-Almada, Juan Maga\~na and V. Motta | Cosmic acceleration in unimodular gravity | 7 pages, 1 figure, accepted for publication in Phys. Rev. D | Phys. Rev. D 99, 123525 (2019) | 10.1103/PhysRevD.99.123525 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study unimodular gravity in the context of cosmology, particularly some
interesting consequences that might be able to describe the background
cosmology and the late cosmic acceleration. We focus our attention on the
hypothesis of \textit{non conservation of the energy momentum tensor}. This
characteristic has an ... | [
{
"created": "Fri, 15 Mar 2019 03:22:42 GMT",
"version": "v1"
},
{
"created": "Fri, 24 May 2019 15:14:22 GMT",
"version": "v2"
}
] | 2019-06-26 | [
[
"García-Aspeitia",
"Miguel A.",
""
],
[
"Martínez-Robles",
"C.",
""
],
[
"Hernández-Almada",
"A.",
""
],
[
"Magaña",
"Juan",
""
],
[
"Motta",
"V.",
""
]
] | We study unimodular gravity in the context of cosmology, particularly some interesting consequences that might be able to describe the background cosmology and the late cosmic acceleration. We focus our attention on the hypothesis of \textit{non conservation of the energy momentum tensor}. This characteristic has an in... |
2010.06448 | Eduardo Guendelman I | E. I. Guendelman, E. Zamlung, D. Benisty | Noether Symmetry in Newtonian Dynamics and Cosmology | version published in General Relativity and Gravitation, 17 pages | General Relativity and Gravitation volume 53, Article number: 99
(2021) | 10.1007/s10714-021-02859-3 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | A new symmetry for Newtonian Dynamics is analyzed, this corresponds to going
to an accelerated frame, which introduces a constant gravitational field into
the system and subsequently. We consider the addition of a linear contribution
to the gravitational potential \(\phi \) which can be used to cancel the
gravitation... | [
{
"created": "Tue, 13 Oct 2020 15:06:54 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Nov 2021 12:57:09 GMT",
"version": "v2"
}
] | 2021-11-17 | [
[
"Guendelman",
"E. I.",
""
],
[
"Zamlung",
"E.",
""
],
[
"Benisty",
"D.",
""
]
] | A new symmetry for Newtonian Dynamics is analyzed, this corresponds to going to an accelerated frame, which introduces a constant gravitational field into the system and subsequently. We consider the addition of a linear contribution to the gravitational potential \(\phi \) which can be used to cancel the gravitational... |
1010.3847 | Ziyang Hu | Ziyang Hu | Born-Rigid Flow and the AdS-CFT Correspondence | 8 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper reviews the concepts and assumptions of rigid flow in relativistic
fluid mech- anics, particularly the generalisation of the classical
Herglotz-Noether theorem, that are relevant to the fluid approximation of the
AdS-CFT dual of large rotating black-holes used by Bhattacharyya et al. We then
give a brief o... | [
{
"created": "Tue, 19 Oct 2010 10:35:20 GMT",
"version": "v1"
}
] | 2010-10-27 | [
[
"Hu",
"Ziyang",
""
]
] | This paper reviews the concepts and assumptions of rigid flow in relativistic fluid mech- anics, particularly the generalisation of the classical Herglotz-Noether theorem, that are relevant to the fluid approximation of the AdS-CFT dual of large rotating black-holes used by Bhattacharyya et al. We then give a brief out... |
1711.03121 | Daniel George | Daniel George, E. A. Huerta | Deep Learning for Real-time Gravitational Wave Detection and Parameter
Estimation: Results with Advanced LIGO Data | 6 pages, 7 figures; First application of deep learning to real LIGO
events; Includes direct comparison against matched-filtering | Physics Letters B, 778 (2018) 64-70 | 10.1016/j.physletb.2017.12.053 | null | gr-qc astro-ph.HE astro-ph.IM cs.LG cs.NE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recent Nobel-prize-winning detections of gravitational waves from merging
black holes and the subsequent detection of the collision of two neutron stars
in coincidence with electromagnetic observations have inaugurated a new era of
multimessenger astrophysics. To enhance the scope of this emergent field of
scienc... | [
{
"created": "Wed, 8 Nov 2017 19:05:28 GMT",
"version": "v1"
}
] | 2018-02-06 | [
[
"George",
"Daniel",
""
],
[
"Huerta",
"E. A.",
""
]
] | The recent Nobel-prize-winning detections of gravitational waves from merging black holes and the subsequent detection of the collision of two neutron stars in coincidence with electromagnetic observations have inaugurated a new era of multimessenger astrophysics. To enhance the scope of this emergent field of science,... |
2203.09238 | Michele Mancarella | Michele Mancarella, Andreas Finke, Stefano Foffa, Edwin
Genoud-Prachex, Francesco Iacovelli, Michele Maggiore | Cosmology and modified gravity with dark sirens from GWTC-3 | Contribution to the Gravitation session of the 56th Rencontres de
Moriond 2022 | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | We present the latest measurements of the Hubble parameter and of the
parameter $\Xi_0$ describing modified gravitational wave propagation, obtained
from the third gravitational wave transient catalog, GWTC-3, using the
correlation with galaxy catalogs and information from the source-frame mass
distribution of binary... | [
{
"created": "Thu, 17 Mar 2022 11:04:43 GMT",
"version": "v1"
}
] | 2022-03-18 | [
[
"Mancarella",
"Michele",
""
],
[
"Finke",
"Andreas",
""
],
[
"Foffa",
"Stefano",
""
],
[
"Genoud-Prachex",
"Edwin",
""
],
[
"Iacovelli",
"Francesco",
""
],
[
"Maggiore",
"Michele",
""
]
] | We present the latest measurements of the Hubble parameter and of the parameter $\Xi_0$ describing modified gravitational wave propagation, obtained from the third gravitational wave transient catalog, GWTC-3, using the correlation with galaxy catalogs and information from the source-frame mass distribution of binary b... |
gr-qc/9404012 | null | P.F. Gonzalez-Diaz | Complementary Relativity | 13, IMAFF-RC-02-94 | null | null | null | gr-qc | null | Special theory of relativity has been formulated in a vacuum momentum-energy
representation which is equivalent to Einstein special relativity and predicts
just the same results as it. Although in this sense such a formulation would be
at least classically useless, its consistent extension to noninertial frames
produ... | [
{
"created": "Thu, 7 Apr 1994 17:00:33 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gonzalez-Diaz",
"P. F.",
""
]
] | Special theory of relativity has been formulated in a vacuum momentum-energy representation which is equivalent to Einstein special relativity and predicts just the same results as it. Although in this sense such a formulation would be at least classically useless, its consistent extension to noninertial frames produce... |
0809.3036 | Cyril Pitrou | Cyril Pitrou | The radiative transfer at second order: a full treatment of the
Boltzmann equation with polarization | 62 pages, Eqs. 7.33 and 7.47 corrected | Class. Quant. Grav. 26 (2009) 065006 | 10.1088/0264-9381/26/6/065006 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article investigates the full Boltzmann equation up to second order in
the cosmological perturbations. Describing the distribution of polarized
radiation by a tensor valued distribution function, we study the gauge
dependence of the distribution function and summarize the construction of the
gauge-invariant dist... | [
{
"created": "Thu, 18 Sep 2008 17:01:27 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Feb 2009 09:06:30 GMT",
"version": "v2"
},
{
"created": "Fri, 18 Dec 2009 11:46:41 GMT",
"version": "v3"
},
{
"created": "Tue, 26 Jun 2018 21:36:03 GMT",
"version": "v4"
}
] | 2018-06-28 | [
[
"Pitrou",
"Cyril",
""
]
] | This article investigates the full Boltzmann equation up to second order in the cosmological perturbations. Describing the distribution of polarized radiation by a tensor valued distribution function, we study the gauge dependence of the distribution function and summarize the construction of the gauge-invariant distri... |
gr-qc/0107092 | Louis Scheffer | Louis K. Scheffer | Conventional Forces can Explain the Anomalous Acceleration of Pioneer 10 | Final minor changes for publication - added explanation of acronyms,
added to RTG asymmetry argument.. Was: 12 pages, 9 figures, major revision.
Added discussion of gas leaks and spin history, a radiation based explanation
of spin changes, and references to re-analysis of Markwardt. Fixed radio
forces, tuned mo... | Phys.Rev. D67 (2003) 084021 | 10.1103/PhysRevD.67.084021 | null | gr-qc astro-ph | null | Anderson, et al. find the measured trajectories of Pioneer 10 and 11
spacecraft deviate from the trajectories computed from known forces acting on
them. This unmodelled acceleration (and the less well known, but similar,
unmodelled torque) can be accounted for by non-isotropic radiation of
spacecraft heat. Various fo... | [
{
"created": "Fri, 27 Jul 2001 21:38:19 GMT",
"version": "v1"
},
{
"created": "Sat, 28 Jul 2001 22:43:56 GMT",
"version": "v2"
},
{
"created": "Fri, 3 Aug 2001 23:40:07 GMT",
"version": "v3"
},
{
"created": "Fri, 25 Oct 2002 22:08:35 GMT",
"version": "v4"
},
{
"cr... | 2009-11-07 | [
[
"Scheffer",
"Louis K.",
""
]
] | Anderson, et al. find the measured trajectories of Pioneer 10 and 11 spacecraft deviate from the trajectories computed from known forces acting on them. This unmodelled acceleration (and the less well known, but similar, unmodelled torque) can be accounted for by non-isotropic radiation of spacecraft heat. Various form... |
0704.2667 | Sergey Solodukhin N. | Thibault Damour and Sergey N. Solodukhin | Wormholes as Black Hole Foils | 13 pages, no figures, Latex | Phys.Rev.D76:024016,2007 | 10.1103/PhysRevD.76.024016 | IHES/P/07/19 | gr-qc astro-ph hep-th | null | We study to what extent wormholes can mimic the observational features of
black holes. It is surprisingly found that many features that could be thought
of as ``characteristic'' of a black hole (endowed with an event horizon) can be
closely mimicked by a globally static wormhole, having no event horizon. This
is the ... | [
{
"created": "Fri, 20 Apr 2007 08:17:44 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Damour",
"Thibault",
""
],
[
"Solodukhin",
"Sergey N.",
""
]
] | We study to what extent wormholes can mimic the observational features of black holes. It is surprisingly found that many features that could be thought of as ``characteristic'' of a black hole (endowed with an event horizon) can be closely mimicked by a globally static wormhole, having no event horizon. This is the ca... |
2004.11845 | Oleg Tsupko | Oleg Yu. Tsupko, Gennady S. Bisnovatyi-Kogan, Adam Rogers and Xinzhong
Er | An Examination of Geometrical and Potential Time Delays in Gravitational
Lensing | 21 pages, 5 figures | Classical and Quantum Gravity, 37, 205017 (2020) | 10.1088/1361-6382/abae86 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we investigate the relation between the potential and geometric
time delays in gravitational lensing. In the original paper of Shapiro (1964),
it is stated that there is a time delay in the radar signals between Earth and
Venus that pass near a massive object (the Sun), compared to the path taken in
the... | [
{
"created": "Fri, 24 Apr 2020 16:34:55 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Sep 2020 00:00:17 GMT",
"version": "v2"
}
] | 2020-10-01 | [
[
"Tsupko",
"Oleg Yu.",
""
],
[
"Bisnovatyi-Kogan",
"Gennady S.",
""
],
[
"Rogers",
"Adam",
""
],
[
"Er",
"Xinzhong",
""
]
] | In this paper we investigate the relation between the potential and geometric time delays in gravitational lensing. In the original paper of Shapiro (1964), it is stated that there is a time delay in the radar signals between Earth and Venus that pass near a massive object (the Sun), compared to the path taken in the a... |
1801.00221 | Jiawei Hu | Jiawei Hu, Hongwei Yu | Manipulating lightcone fluctuations in an analogue cosmic string | 13 pages, 1 figure | Phys. Lett. B 777 (2018) 346-350 | 10.1016/j.physletb.2017.12.047 | null | gr-qc hep-th physics.optics quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the flight time fluctuations in an anisotropic medium inspired by a
cosmic string with an effective fluctuating refractive index caused by
fluctuating vacuum electric fields, which are analogous to the lightcone
fluctuations due to fluctuating spacetime metric when gravity is quantized. The
medium can be rea... | [
{
"created": "Sun, 31 Dec 2017 01:50:46 GMT",
"version": "v1"
}
] | 2018-06-15 | [
[
"Hu",
"Jiawei",
""
],
[
"Yu",
"Hongwei",
""
]
] | We study the flight time fluctuations in an anisotropic medium inspired by a cosmic string with an effective fluctuating refractive index caused by fluctuating vacuum electric fields, which are analogous to the lightcone fluctuations due to fluctuating spacetime metric when gravity is quantized. The medium can be reali... |
gr-qc/9411071 | Luis Octavio Pimentel | Pimentel L O and Diaz-Rivera L M | Effects of Bulk Viscosity on Cosmological Evolution | 8 pages, latex, no figures | NuovoCim.B109:1317-1322,1994 | 10.1007/BF02722842 | UAMI-GA-11 | gr-qc | null | The effect of bulk viscisity on the evolution of the homogeneous and
isotropic cosmological models is considered. Solutions are found, with a
barotropic equation of state, and a viscosity coefficient that is proportional
to a power of the energy density of the universe. For flat space, power law
expansions, related t... | [
{
"created": "Tue, 29 Nov 1994 21:35:36 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"O",
"Pimentel L",
""
],
[
"M",
"Diaz-Rivera L",
""
]
] | The effect of bulk viscisity on the evolution of the homogeneous and isotropic cosmological models is considered. Solutions are found, with a barotropic equation of state, and a viscosity coefficient that is proportional to a power of the energy density of the universe. For flat space, power law expansions, related to ... |
2404.05907 | Liu Tonghua | Tonghua Liu, Marek Biesiada, Shuxun Tian, and Kai Liao | A robust test of general relativity at the galactic scales by combining
strong lensing systems and gravitational wave standard sirens | 9 pages, 3 figures, submitted to PRD | Physical Review D 109, 084074 (2024) | null | null | gr-qc astro-ph.CO astro-ph.GA | http://creativecommons.org/licenses/by/4.0/ | The measurement of the parametrized post-Newtonian parameter
$\gamma_{\rm{PPN}}$ is a robust test of general relativity (GR). In some
modified theories of gravity, $\gamma_{\rm{PPN}}$ may evolve with the redshift
and deviate from one at high redshifts. This means that precise constraints on
$\gamma_{\rm{PPN}}$ acquir... | [
{
"created": "Mon, 8 Apr 2024 23:44:10 GMT",
"version": "v1"
}
] | 2024-05-01 | [
[
"Liu",
"Tonghua",
""
],
[
"Biesiada",
"Marek",
""
],
[
"Tian",
"Shuxun",
""
],
[
"Liao",
"Kai",
""
]
] | The measurement of the parametrized post-Newtonian parameter $\gamma_{\rm{PPN}}$ is a robust test of general relativity (GR). In some modified theories of gravity, $\gamma_{\rm{PPN}}$ may evolve with the redshift and deviate from one at high redshifts. This means that precise constraints on $\gamma_{\rm{PPN}}$ acquired... |
gr-qc/0009087 | Jeroen van Dongen | Jeroen van Dongen | Einstein and the Kaluza-Klein particle | 25 pages, 2 figures, To appear in Stud. Hist. Phil. Mod. Phys | Stud.Hist.Philos.Mod.Phys.33:185-210,2002 | 10.1016/S1355-2198(02)00017-5 | ITFA-99-28 | gr-qc hep-ph hep-th physics.hist-ph | null | In his search for a unified field theory that could undercut quantum
mechanics, Einstein considered five dimensional classical Kaluza-Klein theory.
He studied this theory most intensively during the years 1938-1943. One of his
primary objectives was finding a non-singular particle solution. In the full
theory this se... | [
{
"created": "Tue, 26 Sep 2000 21:24:21 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"van Dongen",
"Jeroen",
""
]
] | In his search for a unified field theory that could undercut quantum mechanics, Einstein considered five dimensional classical Kaluza-Klein theory. He studied this theory most intensively during the years 1938-1943. One of his primary objectives was finding a non-singular particle solution. In the full theory this sear... |
1408.3260 | Carlo Rovelli | Carlo Rovelli | Lorentzian Connes Distance, Spectral Graph Distance and Loop Gravity | 4 pages | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Connes' formula defines a distance in loop quantum gravity, via the spinfoam
Dirac operator. A simple notion of spectral distance on a graph can be extended
do the discrete Lorentzian context, providing a physically natural example of
Lorentzian spectral geometry, with a neat space of Dirac operators. The Hilbert
str... | [
{
"created": "Thu, 14 Aug 2014 12:26:37 GMT",
"version": "v1"
},
{
"created": "Sat, 16 Aug 2014 07:54:19 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Aug 2014 17:23:06 GMT",
"version": "v3"
},
{
"created": "Tue, 9 Sep 2014 14:24:45 GMT",
"version": "v4"
}
] | 2014-09-10 | [
[
"Rovelli",
"Carlo",
""
]
] | Connes' formula defines a distance in loop quantum gravity, via the spinfoam Dirac operator. A simple notion of spectral distance on a graph can be extended do the discrete Lorentzian context, providing a physically natural example of Lorentzian spectral geometry, with a neat space of Dirac operators. The Hilbert struc... |
gr-qc/9409021 | Okuta Yasunari | Joseph Katz and Yasunari Okuta | What Cavities? | 15pages(LaTeX) + 6pages(PS figures) | Class.Quant.Grav.12:2275-2286,1995 | 10.1088/0264-9381/12/9/014 | null | gr-qc | null | Most spherical thin shells, enclosing black body radiation satisfy the
dominant energy condition if they have at least $\simeq 30\%$ of the total
mass-energy. Containers with less mass energy, able to sustain high pressures,
contain mostly unstable radiation. If they have negligible mass energy they are
unable to sus... | [
{
"created": "Mon, 12 Sep 1994 12:52:10 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Katz",
"Joseph",
""
],
[
"Okuta",
"Yasunari",
""
]
] | Most spherical thin shells, enclosing black body radiation satisfy the dominant energy condition if they have at least $\simeq 30\%$ of the total mass-energy. Containers with less mass energy, able to sustain high pressures, contain mostly unstable radiation. If they have negligible mass energy they are unable to susta... |
1507.00910 | Ozgur Delice | P{\i}nar Kirezli, \"Ozg\"ur Delice | On Stationary Axially Symmetric Solutions in Brans-Dicke Theory | V2: 18 pages, published version; some references and section VI is
added. V1:17 pages, Revtex | Phys. Rev. D 92, 104045 (2015) | 10.1103/PhysRevD.92.104045 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Stationary, axially symmetric Brans-Dicke-Maxwell solutions are reexamined in
the framework of the Brans-Dicke (BD) theory. We see that, employing a
particular parametrization of the standard axially symmetric metric simplifies
the procedure of obtaining the Ernst equations for axially symmetric
electrovacuum space-t... | [
{
"created": "Fri, 3 Jul 2015 13:36:04 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Nov 2015 18:07:52 GMT",
"version": "v2"
}
] | 2015-12-02 | [
[
"Kirezli",
"Pınar",
""
],
[
"Delice",
"Özgür",
""
]
] | Stationary, axially symmetric Brans-Dicke-Maxwell solutions are reexamined in the framework of the Brans-Dicke (BD) theory. We see that, employing a particular parametrization of the standard axially symmetric metric simplifies the procedure of obtaining the Ernst equations for axially symmetric electrovacuum space-tim... |
2108.13492 | Eric D. Carlson | Sarah B. Fisher and Eric D. Carlson | Nuclear Limits on Non-Minimally Coupled Gravity | 2 figures | null | 10.1103/PhysRevD.105.024020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore alternate theories of gravity where the gravitational term in the
Lagrangian $\frac{R}{8\pi G}$ is replaced by a function $f_1(R)$ and the matter
Lagrangian is multiplied by a function $f_2(R)$. We argue that nuclear physics
can provide strong experimental constraints on such theories. In particular
using ... | [
{
"created": "Mon, 30 Aug 2021 19:31:52 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Nov 2021 20:42:49 GMT",
"version": "v2"
}
] | 2022-01-19 | [
[
"Fisher",
"Sarah B.",
""
],
[
"Carlson",
"Eric D.",
""
]
] | We explore alternate theories of gravity where the gravitational term in the Lagrangian $\frac{R}{8\pi G}$ is replaced by a function $f_1(R)$ and the matter Lagrangian is multiplied by a function $f_2(R)$. We argue that nuclear physics can provide strong experimental constraints on such theories. In particular using en... |
0709.4359 | Anja Schr\"oter | Anja Schroeter, Ronny Nawrodt, Roman Schnabel, Stuart Reid, Iain
Martin, Sheila Rowan, Christian Schwarz, Torsten Koettig, Ralf Neubert,
Matthias Th\"urk, Wolfgang Vodel, Andreas T\"unnermann, Karsten Danzmann,
Paul Seidel | On the mechanical quality factors of cryogenic test masses from fused
silica and crystalline quartz | 11 pages, 2 figures, submitted to Class. Quantum Grav | null | null | null | gr-qc | null | Current interferometric gravitational wave detectors (IGWDs) are operated at
room temperature with test masses made from fused silica. Fused silica shows
very low absorption at the laser wavelength of 1064 nm. It is also well suited
to realize low thermal noise floors in the detector signal band since it offers
low m... | [
{
"created": "Thu, 27 Sep 2007 11:07:19 GMT",
"version": "v1"
}
] | 2007-09-28 | [
[
"Schroeter",
"Anja",
""
],
[
"Nawrodt",
"Ronny",
""
],
[
"Schnabel",
"Roman",
""
],
[
"Reid",
"Stuart",
""
],
[
"Martin",
"Iain",
""
],
[
"Rowan",
"Sheila",
""
],
[
"Schwarz",
"Christian",
""
],
[
"... | Current interferometric gravitational wave detectors (IGWDs) are operated at room temperature with test masses made from fused silica. Fused silica shows very low absorption at the laser wavelength of 1064 nm. It is also well suited to realize low thermal noise floors in the detector signal band since it offers low mec... |
gr-qc/0308059 | Wung-Hong Huang | Wung-Hong Huang | Anisotropic Cosmological Models with Energy Density Dependent Bulk
Viscosity | null | J.Math.Phys. 31 (1990) 1456-1462 | 10.1063/1.528736 | null | gr-qc hep-th | null | An analysis is presented of the Bianchi type I cosmological models with a
bulk viscosity when the universe is filled with the stiff fluid $p = \epsilon$
while the viscosity is a power function of the energy density, such as $\eta =
\alpha |\epsilon|^n$. Although the exact solutions are obtainable only when the
$2n$ i... | [
{
"created": "Tue, 19 Aug 2003 14:58:07 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Aug 2003 14:36:31 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Huang",
"Wung-Hong",
""
]
] | An analysis is presented of the Bianchi type I cosmological models with a bulk viscosity when the universe is filled with the stiff fluid $p = \epsilon$ while the viscosity is a power function of the energy density, such as $\eta = \alpha |\epsilon|^n$. Although the exact solutions are obtainable only when the $2n$ is ... |
2105.00198 | Zhi-Wei Wang | Samuel L. Braunstein, Saurya Das and Zhi-Wei Wang | Information recovery from evaporating black holes | Minor typos corrected, version to match the published version in the
International Journal of Modern Physics D | [J]. International Journal of Modern Physics D, 2021: 2150069 | 10.1142/S0218271821500693 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the apparent horizon and the region near $r=0$ of an evaporating
charged, rotating black hole are timelike. It then follows that for black holes
in nature, which invariably have some rotation, have a channel, via which
classical or quantum information can escape to the outside, while the black
hole shrin... | [
{
"created": "Sat, 1 May 2021 09:02:22 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Jun 2021 02:14:53 GMT",
"version": "v2"
}
] | 2021-09-27 | [
[
"Braunstein",
"Samuel L.",
""
],
[
"Das",
"Saurya",
""
],
[
"Wang",
"Zhi-Wei",
""
]
] | We show that the apparent horizon and the region near $r=0$ of an evaporating charged, rotating black hole are timelike. It then follows that for black holes in nature, which invariably have some rotation, have a channel, via which classical or quantum information can escape to the outside, while the black hole shrinks... |
gr-qc/0601086 | Mike Berger | Micheal S. Berger and Hamed Shojaei | Interacting Dark Energy and the Cosmic Coincidence Problem | 8 pages, 3 figures, Phys. Rev. D version | Phys.Rev. D73 (2006) 083528 | 10.1103/PhysRevD.73.083528 | IUHET-490 | gr-qc | null | The introduction of an interaction for dark energy to the standard cosmology
offers a potential solution to the cosmic coincidence problem. We examine the
conditions on the dark energy density that must be satisfied for this scenario
to be realized. Under some general conditions we find a stable attractor for
the evo... | [
{
"created": "Fri, 20 Jan 2006 18:04:32 GMT",
"version": "v1"
},
{
"created": "Sun, 5 Mar 2006 22:45:16 GMT",
"version": "v2"
},
{
"created": "Tue, 2 May 2006 18:11:44 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Berger",
"Micheal S.",
""
],
[
"Shojaei",
"Hamed",
""
]
] | The introduction of an interaction for dark energy to the standard cosmology offers a potential solution to the cosmic coincidence problem. We examine the conditions on the dark energy density that must be satisfied for this scenario to be realized. Under some general conditions we find a stable attractor for the evolu... |
gr-qc/0207107 | Marcus S. Cohen | Marcus S. Cohen | Clifford Residues and Charge Quantization | 25 pages, submitted to Advances in Applied Clifford Algebras | null | null | null | gr-qc math-ph math.MP math.SG | null | We derive the quantization of action, particle number, and electric charge in
a Lagrangian spin bundle over M equivalent M_# union D_J, Penrose's conformal
compactification of Minkowsky space, with the world tubes of massive particles
removed.
| [
{
"created": "Fri, 26 Jul 2002 21:32:04 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cohen",
"Marcus S.",
""
]
] | We derive the quantization of action, particle number, and electric charge in a Lagrangian spin bundle over M equivalent M_# union D_J, Penrose's conformal compactification of Minkowsky space, with the world tubes of massive particles removed. |
0707.2128 | Young-Jai Park | Yong-Wan Kim and Young-Jai Park | Entropy of the Schwarzschild black hole to all orders in the Planck
length | 13 pages, 1 figure; Minor typos corrected, one reference added;
Accepted for publication in Phys. Lett. B | Phys.Lett.B655:172-177,2007 | 10.1016/j.physletb.2007.08.065 | SOGANG-MP 01/07 | gr-qc | null | Considering corrections to all orders in the Planck length on the quantum
state density from a generalized uncertainty principle (GUP), we calculate the
statistical entropy of the scalar field on the background of the Schwarzschild
black hole without any cutoff. We obtain the entropy of the massive scalar
field propo... | [
{
"created": "Sat, 14 Jul 2007 07:58:06 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Sep 2007 01:55:27 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Kim",
"Yong-Wan",
""
],
[
"Park",
"Young-Jai",
""
]
] | Considering corrections to all orders in the Planck length on the quantum state density from a generalized uncertainty principle (GUP), we calculate the statistical entropy of the scalar field on the background of the Schwarzschild black hole without any cutoff. We obtain the entropy of the massive scalar field proport... |
1308.2470 | Cosimo Bambi | Cosimo Bambi | Constraining possible variations of the fine structure constant in
strong gravitational fields with the K$\alpha$ iron line | 1+15 pages, 6 figures. v2: refereed version | JCAP 1403:034,2014 | 10.1088/1475-7516/2014/03/034 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In extensions of general relativity and in theories aiming at unifying
gravity with the forces of the Standard Model, the value of the "fundamental
constants" is often determined by the vacuum expectation value of new fields,
which may thus change in different backgrounds. Variations of fundamental
constants with res... | [
{
"created": "Mon, 12 Aug 2013 06:18:54 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Mar 2014 14:01:43 GMT",
"version": "v2"
}
] | 2014-03-19 | [
[
"Bambi",
"Cosimo",
""
]
] | In extensions of general relativity and in theories aiming at unifying gravity with the forces of the Standard Model, the value of the "fundamental constants" is often determined by the vacuum expectation value of new fields, which may thus change in different backgrounds. Variations of fundamental constants with respe... |
1811.10284 | Julius Serbenta | Michele Grasso, Miko{\l}aj Korzy\'nski, Julius Serbenta | Geometric optics in general relativity using bilocal operators | Minor revision | Phys. Rev. D 99, 064038 (2019) | 10.1103/PhysRevD.99.064038 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the standard problem of observational astronomy, i.e. the
observations of light emission from a distant region of spacetime in general
relativity. The goal is to describe the changes between the measurements of the
light performed by a sample of observers slightly displaced with respect to
each other and ... | [
{
"created": "Mon, 26 Nov 2018 10:57:24 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Nov 2018 19:56:49 GMT",
"version": "v2"
},
{
"created": "Thu, 7 Mar 2019 12:27:35 GMT",
"version": "v3"
},
{
"created": "Fri, 29 Mar 2019 18:01:18 GMT",
"version": "v4"
}
] | 2019-04-02 | [
[
"Grasso",
"Michele",
""
],
[
"Korzyński",
"Mikołaj",
""
],
[
"Serbenta",
"Julius",
""
]
] | We consider the standard problem of observational astronomy, i.e. the observations of light emission from a distant region of spacetime in general relativity. The goal is to describe the changes between the measurements of the light performed by a sample of observers slightly displaced with respect to each other and mo... |
1810.12884 | Alexandros Karam Dr. | Alexandros Karam, Thomas Pappas, and Kyriakos Tamvakis | Nonminimal Coleman--Weinberg Inflation with an $R^2$ term | typos fixed, equation (3.16) and discussion around it added, updated
references | null | 10.1088/1475-7516/2019/02/006 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the Coleman--Weinberg inflationary model where a scalar field
$\phi$ is non-minimally coupled to gravity with the addition of the $R^2$ term.
We express the theory in terms of two scalar fields and going to the Einstein
frame we employ the Gildener--Weinberg formalism, compute the one-loop
effective potenti... | [
{
"created": "Tue, 30 Oct 2018 17:32:08 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Feb 2019 19:36:51 GMT",
"version": "v2"
}
] | 2019-02-26 | [
[
"Karam",
"Alexandros",
""
],
[
"Pappas",
"Thomas",
""
],
[
"Tamvakis",
"Kyriakos",
""
]
] | We extend the Coleman--Weinberg inflationary model where a scalar field $\phi$ is non-minimally coupled to gravity with the addition of the $R^2$ term. We express the theory in terms of two scalar fields and going to the Einstein frame we employ the Gildener--Weinberg formalism, compute the one-loop effective potential... |
2311.06328 | Mikhail Altaisky | M.V. Altaisky | Poincare group spin networks | RevTex, 7 pages | Int. J. Theor. Phys. 63 (2024) 145 | 10.1007/s10773-024-05688-7 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Spin network technique is usually generalized to relativistic case by
changing $SO(4)$ group -- Euclidean counterpart of the Lorentz group -- to its
universal spin covering $SU(2)\times SU(2)$, or by using the representations of
$SO(3,1)$ Lorentz group. We extend this approach by using inhomogeneous Lorentz
group $\m... | [
{
"created": "Fri, 10 Nov 2023 16:10:51 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Jan 2024 11:41:38 GMT",
"version": "v2"
},
{
"created": "Wed, 5 Jun 2024 13:12:23 GMT",
"version": "v3"
}
] | 2024-06-06 | [
[
"Altaisky",
"M. V.",
""
]
] | Spin network technique is usually generalized to relativistic case by changing $SO(4)$ group -- Euclidean counterpart of the Lorentz group -- to its universal spin covering $SU(2)\times SU(2)$, or by using the representations of $SO(3,1)$ Lorentz group. We extend this approach by using inhomogeneous Lorentz group $\mat... |
gr-qc/0301030 | Ignazio Ciufolini | Ignazio Ciufolini and Franco Ricci | Gravitational Lensing and Gravitomagnetic Time Delay | Submitted to Physical Review Letters: 8 April 2002. Resubmitted,
revised: 31 July 2002; 31 December 2002 | null | null | null | gr-qc | null | We derive the delay in travel time of photons due to the spin of a body both
inside a rotating shell and outside a rotating body. We then show that this
time delay by the spin of an astrophysical object might be detected in
different images of the same source by gravitational lensing; it might be
relevant in the dete... | [
{
"created": "Wed, 8 Jan 2003 21:01:06 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ciufolini",
"Ignazio",
""
],
[
"Ricci",
"Franco",
""
]
] | We derive the delay in travel time of photons due to the spin of a body both inside a rotating shell and outside a rotating body. We then show that this time delay by the spin of an astrophysical object might be detected in different images of the same source by gravitational lensing; it might be relevant in the determ... |
1702.04367 | Branislav Cvetkovi\'c | M. Blagojevi\'c and B. Cvetkovi\'c | Generalized pp waves in Poincar\'e gauge theory | LATEX 18 pages, 4 figures | Phys. Rev. D 95, 104018 (2017) | 10.1103/PhysRevD.95.104018 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Starting from the generalized pp waves that are exact vacuum solutions of
general relativity with a cosmological constant, we construct a new family of
exact vacuum solutions of Poincar\'e gauge theory, the generalized pp waves
with torsion. The ansatz for torsion is chosen in accordance with the wave
nature of the s... | [
{
"created": "Tue, 14 Feb 2017 19:40:04 GMT",
"version": "v1"
}
] | 2017-05-24 | [
[
"Blagojević",
"M.",
""
],
[
"Cvetković",
"B.",
""
]
] | Starting from the generalized pp waves that are exact vacuum solutions of general relativity with a cosmological constant, we construct a new family of exact vacuum solutions of Poincar\'e gauge theory, the generalized pp waves with torsion. The ansatz for torsion is chosen in accordance with the wave nature of the sol... |
2107.01556 | Hao Xu | Ru Ling, Hao Xu, Yen Chin Ong | How Anti-de Sitter Black Holes Reach Thermal Equilibrium | 10 pages;v2: references added, minor corrections;v3: published
version in PLB | Phys.Lett.B 826 (2022) 136896 | 10.1016/j.physletb.2022.136896 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | It is commonly known in the literature that large black holes in anti-de
Sitter spacetimes (with reflective boundary condition) are in thermal
equilibrium with their Hawking radiation. Focusing on black holes with event
horizon of toroidal topology, we study a simple model to understand explicitly
how this thermal eq... | [
{
"created": "Sun, 4 Jul 2021 06:29:16 GMT",
"version": "v1"
},
{
"created": "Sun, 7 Nov 2021 05:34:02 GMT",
"version": "v2"
},
{
"created": "Fri, 28 Jan 2022 08:22:06 GMT",
"version": "v3"
}
] | 2022-01-31 | [
[
"Ling",
"Ru",
""
],
[
"Xu",
"Hao",
""
],
[
"Ong",
"Yen Chin",
""
]
] | It is commonly known in the literature that large black holes in anti-de Sitter spacetimes (with reflective boundary condition) are in thermal equilibrium with their Hawking radiation. Focusing on black holes with event horizon of toroidal topology, we study a simple model to understand explicitly how this thermal equi... |
gr-qc/0205009 | Jean-Philippe Uzan | Roland Lehoucq, Jeffrey Weeks, Jean-Philippe Uzan, Evelise Gausmann,
and Jean-Pierre Luminet | Eigenmodes of 3-dimensional spherical spaces and their application to
cosmology | 28 pages, 24 figures | Class.Quant.Grav. 19 (2002) 4683-4708 | 10.1088/0264-9381/19/18/305 | null | gr-qc astro-ph | null | This article investigates the computation of the eigenmodes of the Laplacian
operator in multi-connected three-dimensional spherical spaces. General
mathematical results and analytical solutions for lens and prism spaces are
presented. Three complementary numerical methods are developed and compared
with our analytic... | [
{
"created": "Thu, 2 May 2002 08:50:13 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Lehoucq",
"Roland",
""
],
[
"Weeks",
"Jeffrey",
""
],
[
"Uzan",
"Jean-Philippe",
""
],
[
"Gausmann",
"Evelise",
""
],
[
"Luminet",
"Jean-Pierre",
""
]
] | This article investigates the computation of the eigenmodes of the Laplacian operator in multi-connected three-dimensional spherical spaces. General mathematical results and analytical solutions for lens and prism spaces are presented. Three complementary numerical methods are developed and compared with our analytic r... |
2104.06295 | Eduardo De Morais | R. R. Cuzinatto, E. M. de Morais and B. M. Pimentel | LyST: a Scalar-Tensor Theory of Gravity on Lyra Manifold | 14 pages; 2 figures; to be published in Phys. Rev. D | Phys. Rev. D 103, 124002 (2021) | 10.1103/PhysRevD.103.124002 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a scalar-tensor theory of gravity on a torsion-free and metric
compatible Lyra manifold. This is obtained by generalizing the concept of
physical reference frame by considering a scale function defined over the
manifold. The choice of a specific frame induces a local base, naturally
non-holonomic, whose st... | [
{
"created": "Tue, 13 Apr 2021 15:36:32 GMT",
"version": "v1"
}
] | 2021-06-09 | [
[
"Cuzinatto",
"R. R.",
""
],
[
"de Morais",
"E. M.",
""
],
[
"Pimentel",
"B. M.",
""
]
] | We present a scalar-tensor theory of gravity on a torsion-free and metric compatible Lyra manifold. This is obtained by generalizing the concept of physical reference frame by considering a scale function defined over the manifold. The choice of a specific frame induces a local base, naturally non-holonomic, whose stru... |
1709.07864 | Christian Knoll | Jose Luis Bl\'azquez-Salcedo and Christian Knoll | Slowly damped quasinormal modes of the massive Dirac field in
d-dimensional Tangherlini spacetime | null | Phys. Rev. D 97, 044020 (2018) | 10.1103/PhysRevD.97.044020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider quasinormal modes of the massive Dirac field in the background of
a Schwarzschild- Tangherlini black hole. Different dimensions of the spacetime
are considered, from d = 4 to d = 9. The quasinormal modes are calculated using
two independent methods: WKB and continued fraction. We obtain the spectrum of
qu... | [
{
"created": "Fri, 22 Sep 2017 17:38:43 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Nov 2017 12:51:38 GMT",
"version": "v2"
},
{
"created": "Thu, 15 Feb 2018 20:20:08 GMT",
"version": "v3"
}
] | 2018-02-19 | [
[
"Blázquez-Salcedo",
"Jose Luis",
""
],
[
"Knoll",
"Christian",
""
]
] | We consider quasinormal modes of the massive Dirac field in the background of a Schwarzschild- Tangherlini black hole. Different dimensions of the spacetime are considered, from d = 4 to d = 9. The quasinormal modes are calculated using two independent methods: WKB and continued fraction. We obtain the spectrum of quas... |
1406.6422 | Jorge P\'aramos | Orfeu Bertolami and Jorge P\'aramos | Viability of nonminimally coupled f (R) gravity | 13 pages. Accepted for publication in General Relativity and
Gravitation | null | 10.1007/s10714-015-2002-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we explore the viability of nonminimally coupled matter-
curvature gravity theories, namely the conditions required for the absence of
tachyon instabilities and ghost degrees of freedom. We contrast our finds with
recent claims of a pathological behaviour of this class of models, which
resorted to, in ou... | [
{
"created": "Wed, 25 Jun 2014 00:23:30 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Oct 2014 18:51:29 GMT",
"version": "v2"
},
{
"created": "Thu, 11 Feb 2016 18:51:32 GMT",
"version": "v3"
}
] | 2017-02-22 | [
[
"Bertolami",
"Orfeu",
""
],
[
"Páramos",
"Jorge",
""
]
] | In this work we explore the viability of nonminimally coupled matter- curvature gravity theories, namely the conditions required for the absence of tachyon instabilities and ghost degrees of freedom. We contrast our finds with recent claims of a pathological behaviour of this class of models, which resorted to, in our ... |
gr-qc/0701170 | Alberto Vecchio | K A Arnaud, S Babak, J G Baker, M J Benacquista, N J Cornish, C
Cutler, L S Finn, S L Larson, T Littenberg, E K Porter, M Vallisneri, A
Vecchio, J-Y Vinet (the Mock LISA Data Challenge Task Force) | An overview of the second round of the Mock LISA Data Challenges | Proceedings of GWDAW-11. Corrected Challenge 2 definition (esp. Table
1), definition of polarization tensors in simulators, definition of
polarization angle in EMRIs | Class.Quant.Grav.24:S551-S564,2007 | 10.1088/0264-9381/24/19/S18 | null | gr-qc | null | The Mock Data Challenges (MLDCs) have the dual purpose of fostering the
development of LISA data-analysis tools and capabilities and of demonstrating
the technical readiness already achieved by the gravitational-wave community in
distilling a rich science payoff from the LISA data. The first round of MLDCs
has just b... | [
{
"created": "Tue, 30 Jan 2007 16:27:05 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Apr 2007 23:16:52 GMT",
"version": "v2"
},
{
"created": "Fri, 18 May 2007 18:25:17 GMT",
"version": "v3"
},
{
"created": "Fri, 16 Nov 2007 19:22:15 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Arnaud",
"K A",
"",
"the Mock LISA Data Challenge Task Force"
],
[
"Babak",
"S",
"",
"the Mock LISA Data Challenge Task Force"
],
[
"Baker",
"J G",
"",
"the Mock LISA Data Challenge Task Force"
],
[
"Benacquista",
"M J",
"",
"the Mock LI... | The Mock Data Challenges (MLDCs) have the dual purpose of fostering the development of LISA data-analysis tools and capabilities and of demonstrating the technical readiness already achieved by the gravitational-wave community in distilling a rich science payoff from the LISA data. The first round of MLDCs has just bee... |
2401.06902 | Peter O Hess | Cesar A. Zen Vasconcellos and Peter O. Hess and Fridolin Weber and
Benno Bodmann and Marcelo Netz-Marzola and Dimiter Hadjimichef and Geovane
Naysinger and Moises Razeira | Primordial gravitational waves in Wheeler-DeWitt non-commutative
linearized branch-cut quantum gravity | 35 pages, 17 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Branch-cut gravity (BCG) is an extended version of the ontological domain of
General Relativity, which is analytically continued to the complex plane. When
combined with the Hawking-Hertog multiverse conception, BCG successfully
addresses the issue of the primordial singularity. It consistently portrays the
early Uni... | [
{
"created": "Fri, 12 Jan 2024 21:38:19 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Feb 2024 21:22:06 GMT",
"version": "v2"
}
] | 2024-02-06 | [
[
"Vasconcellos",
"Cesar A. Zen",
""
],
[
"Hess",
"Peter O.",
""
],
[
"Weber",
"Fridolin",
""
],
[
"Bodmann",
"Benno",
""
],
[
"Netz-Marzola",
"Marcelo",
""
],
[
"Hadjimichef",
"Dimiter",
""
],
[
"Naysinger",
"Ge... | Branch-cut gravity (BCG) is an extended version of the ontological domain of General Relativity, which is analytically continued to the complex plane. When combined with the Hawking-Hertog multiverse conception, BCG successfully addresses the issue of the primordial singularity. It consistently portrays the early Unive... |
1107.2449 | Natalia Kiriushcheva | N. Kiriushcheva, P.G. Komorowski and S.V. Kuzmin | Remarks on the "non-canonicity puzzle": Lagrangian symmetries of the
Einstein-Hilbert action | 23 pages | null | 10.1007/s10773-012-1080-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given the non-canonical relationship between variables used in the
Hamiltonian formulations of the Einstein-Hilbert action (due to Pirani, Schild,
Skinner (PSS) and Dirac) and the Arnowitt-Deser-Misner (ADM) action, and the
consequent difference in the gauge transformations generated by the first-class
constraints of... | [
{
"created": "Wed, 13 Jul 2011 02:07:43 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Kiriushcheva",
"N.",
""
],
[
"Komorowski",
"P. G.",
""
],
[
"Kuzmin",
"S. V.",
""
]
] | Given the non-canonical relationship between variables used in the Hamiltonian formulations of the Einstein-Hilbert action (due to Pirani, Schild, Skinner (PSS) and Dirac) and the Arnowitt-Deser-Misner (ADM) action, and the consequent difference in the gauge transformations generated by the first-class constraints of t... |
1708.01717 | Weiqiang Yang | Weiqiang Yang, Supriya Pan, Andronikos Paliathanasis | Latest astronomical constraints on some nonlinear parametric dark energy
models | 11 pages, 12 figures, 4 tables, Published version in MNRAS | Mon. Not. Roy. Astron. Soc, 475 (2018) no. 2, 2605-2613 | 10.1093/mnras/sty019 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider nonlinear redshift-dependent equation of state parameters as dark
energy models in a spatially flat Friedmann-Lema\^itre-Robertson-Walker
universe. To depict the expansion history of the universe in such cosmological
scenarios, we take into account the large scale behaviour of such parametric
models and f... | [
{
"created": "Sat, 5 Aug 2017 06:34:20 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Dec 2017 06:58:38 GMT",
"version": "v2"
},
{
"created": "Sat, 3 Feb 2018 11:28:48 GMT",
"version": "v3"
}
] | 2018-02-06 | [
[
"Yang",
"Weiqiang",
""
],
[
"Pan",
"Supriya",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | We consider nonlinear redshift-dependent equation of state parameters as dark energy models in a spatially flat Friedmann-Lema\^itre-Robertson-Walker universe. To depict the expansion history of the universe in such cosmological scenarios, we take into account the large scale behaviour of such parametric models and fit... |
gr-qc/9611043 | Daniel Sudarsky | Ulises Nucamendi and Daniel Sudarsky | Quasi-Asimptotically Flat Spacetimes and Their ADM Mass | Latex | Class.Quant.Grav. 14 (1997) 1309-1327 | 10.1088/0264-9381/14/5/031 | null | gr-qc | null | We define spacetimes that are asymptotically flat, except for a deficit solid
angle $\alpha$, and present a definition of their ``ADM'' mass, which is finite
for this class of spacetimes, and, in particular, coincides with the value of
the parameter $M$ of the global monopole spacetime studied by Vilenkin and
Barriol... | [
{
"created": "Thu, 14 Nov 1996 18:48:37 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Nucamendi",
"Ulises",
""
],
[
"Sudarsky",
"Daniel",
""
]
] | We define spacetimes that are asymptotically flat, except for a deficit solid angle $\alpha$, and present a definition of their ``ADM'' mass, which is finite for this class of spacetimes, and, in particular, coincides with the value of the parameter $M$ of the global monopole spacetime studied by Vilenkin and Barriola ... |
1205.2158 | Prado Martin-Moruno | Valentina Baccetti (Victoria University of Wellington), Prado
Martin-Moruno (Victoria University of Wellington), and Matt Visser (Victoria
University of Wellington) | Massive gravity from bimetric gravity | v1: 25 pages; v2: 6 references added, discussion streamlined; v3: 24
pages, 20 references added, section 2 summarized, new comments added to
section 3, conclusions improved but unchanged. This version accepted for
publication in Classical and Quantum Gravity | Class. Quantum Grav. 30 (2013) 015004 | 10.1088/0264-9381/30/1/015004 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the subtle relationship between massive gravity and bimetric
gravity, focusing particularly on the manner in which massive gravity may be
viewed as a suitable limit of bimetric gravity. The limiting procedure is more
delicate than currently appreciated. Specifically, this limiting procedure
should not unne... | [
{
"created": "Thu, 10 May 2012 04:53:39 GMT",
"version": "v1"
},
{
"created": "Tue, 15 May 2012 22:33:52 GMT",
"version": "v2"
},
{
"created": "Sun, 11 Nov 2012 21:37:49 GMT",
"version": "v3"
}
] | 2012-12-06 | [
[
"Baccetti",
"Valentina",
"",
"Victoria University of Wellington"
],
[
"Martin-Moruno",
"Prado",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria\n University of Wellington"
]
] | We discuss the subtle relationship between massive gravity and bimetric gravity, focusing particularly on the manner in which massive gravity may be viewed as a suitable limit of bimetric gravity. The limiting procedure is more delicate than currently appreciated. Specifically, this limiting procedure should not unnece... |
1806.09858 | Rong-Jia Yang | Yaoguang Zheng, Rong-Jia Yang | Horizon thermodynamics in $f(R)$ theory | 8 pages, no figure | Eur. Phys. J. C 78 (2018) 682 | 10.1140/epjc/s10052-018-6167-4 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate whether the new horizon first law proposed recently still work
in $f(R)$ theory. We identify the entropy and the energy of black hole as
quantities proportional to the corresponding value of integration, supported by
the fact that the new horizon first law holds true as a consequence of
equations of mo... | [
{
"created": "Tue, 26 Jun 2018 09:09:54 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Sep 2018 14:14:00 GMT",
"version": "v2"
}
] | 2018-09-05 | [
[
"Zheng",
"Yaoguang",
""
],
[
"Yang",
"Rong-Jia",
""
]
] | We investigate whether the new horizon first law proposed recently still work in $f(R)$ theory. We identify the entropy and the energy of black hole as quantities proportional to the corresponding value of integration, supported by the fact that the new horizon first law holds true as a consequence of equations of moti... |
1401.1060 | Tom\'a\v{s} M\'alek | Tom\'a\v{s} M\'alek | Extended Kerr-Schild spacetimes: General properties and some explicit
examples | 33 pages, revised to match the published version in CQG | Class. Quant. Grav. 31 185013 (2014) | 10.1088/0264-9381/31/18/185013 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study extended Kerr-Schild (xKS) spacetimes, i.e. an extension of the
Kerr-Schild (KS) ansatz where, in addition to the null KS vector, a spacelike
vector field appears in the metric. In contrast to the KS case, we obtain only
a necessary condition under which the KS vector is geodetic. However, it is
shown that t... | [
{
"created": "Mon, 6 Jan 2014 12:36:29 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Nov 2014 16:42:25 GMT",
"version": "v2"
}
] | 2014-11-06 | [
[
"Málek",
"Tomáš",
""
]
] | We study extended Kerr-Schild (xKS) spacetimes, i.e. an extension of the Kerr-Schild (KS) ansatz where, in addition to the null KS vector, a spacelike vector field appears in the metric. In contrast to the KS case, we obtain only a necessary condition under which the KS vector is geodetic. However, it is shown that thi... |
1303.5158 | Martin Richarte MR | Mart\'in G. Richarte | Cylindrical wormholes in DGP gravity | Accepted for publication in PRD, 5 pages, 0 figures;
http://link.aps.org/doi/10.1103/PhysRevD.87.067503 | Phys. Rev. D 87, 067503 (2013) [5 pages] | 10.1103/PhysRevD.87.067503 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct traversable thin-shell wormholes in the Dvali-Gabadadze-Porrati
theory with cylindrical symmetry applying the cut and paste procedure to a flat
black string solution of the five-dimensional vacuum Einstein field equations.
In contrast to general relativity case, where thin-shell wormholes violate both
we... | [
{
"created": "Thu, 21 Mar 2013 04:18:23 GMT",
"version": "v1"
}
] | 2013-04-01 | [
[
"Richarte",
"Martín G.",
""
]
] | We construct traversable thin-shell wormholes in the Dvali-Gabadadze-Porrati theory with cylindrical symmetry applying the cut and paste procedure to a flat black string solution of the five-dimensional vacuum Einstein field equations. In contrast to general relativity case, where thin-shell wormholes violate both weak... |
1102.2901 | Olga Babourova Valer'evna | O.V. Babourova, B.N. Frolov and R.S. Kostkin | Dirac's scalar field as an effective component of the dark energy and an
evolution of the cosmological "constant" | 19 pages, 0 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The equations of the conformal field theory of gravitation with the Dirac's
scalar field in Weyl-Cartan spacetime have been received. Exact solutions for
Dirac's scalar field for an early Universe have been derived. Intensive
decrease of physical vacuum energy (dark energy) is obtained with the Dirac's
scalar field a... | [
{
"created": "Mon, 14 Feb 2011 21:19:36 GMT",
"version": "v1"
}
] | 2011-02-16 | [
[
"Babourova",
"O. V.",
""
],
[
"Frolov",
"B. N.",
""
],
[
"Kostkin",
"R. S.",
""
]
] | The equations of the conformal field theory of gravitation with the Dirac's scalar field in Weyl-Cartan spacetime have been received. Exact solutions for Dirac's scalar field for an early Universe have been derived. Intensive decrease of physical vacuum energy (dark energy) is obtained with the Dirac's scalar field as ... |
1010.3834 | Dong-han Yeom | Dong-il Hwang, Dong-han Yeom | Generation of a bubble universe using a negative energy bath | 36 pages, 20 figures | Class.Quant.Grav.28:155003,2011 | 10.1088/0264-9381/28/15/155003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper suggests a model for a bubble universe using buildable false
vacuum bubbles. We study the causal structures of collapsing false vacuum
bubbles using double-null simulations. False vacuum bubbles violate the null
energy condition and emit negative energy along the outgoing direction through
semi-classical e... | [
{
"created": "Tue, 19 Oct 2010 09:20:23 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Jun 2011 02:03:00 GMT",
"version": "v2"
}
] | 2011-06-30 | [
[
"Hwang",
"Dong-il",
""
],
[
"Yeom",
"Dong-han",
""
]
] | This paper suggests a model for a bubble universe using buildable false vacuum bubbles. We study the causal structures of collapsing false vacuum bubbles using double-null simulations. False vacuum bubbles violate the null energy condition and emit negative energy along the outgoing direction through semi-classical eff... |
2201.12141 | Juan Margalef-Bentabol | J. Fernando Barbero G., Juan Margalef-Bentabol, Valle Varo, Eduardo
J.S. Villase\~nor | On the on-shell equivalence of general relativity and Holst theories
with nonmetricity, torsion, and boundaries | null | Physical Review D, 105 (2022) 064066 | 10.1103/PhysRevD.105.064066 | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We study a generalization of the Holst action where we admit nonmetricity and
torsion in manifolds with timelike boundaries (both in the metric and tetrad
formalism). We prove that its space of solutions is equal to the one of the
Palatini action. Therefore, we conclude that the metric sector is in fact
identical to ... | [
{
"created": "Fri, 28 Jan 2022 14:28:43 GMT",
"version": "v1"
}
] | 2022-08-05 | [
[
"G.",
"J. Fernando Barbero",
""
],
[
"Margalef-Bentabol",
"Juan",
""
],
[
"Varo",
"Valle",
""
],
[
"Villaseñor",
"Eduardo J. S.",
""
]
] | We study a generalization of the Holst action where we admit nonmetricity and torsion in manifolds with timelike boundaries (both in the metric and tetrad formalism). We prove that its space of solutions is equal to the one of the Palatini action. Therefore, we conclude that the metric sector is in fact identical to GR... |
gr-qc/0105007 | Alicia M. Sintes | Alicia M. Sintes, Patricia M. Benoit, Alan A. Coley | Infinite Kinematic Self-Similarity and Perfect Fluid Spacetimes | 38 pages, 6 figures. Accepted for publication in General Relativity &
Gravitation | Gen.Rel.Grav. 33 (2001) 1863-1896 | 10.1023/A:1013087520129 | null | gr-qc | null | Perfect fluid spacetimes admitting a kinematic self-similarity of infinite
type are investigated. In the case of plane, spherically or hyperbolically
symmetric space-times the field equations reduce to a system of autonomous
ordinary differential equations. The qualitative properties of solutions of
this system of eq... | [
{
"created": "Wed, 2 May 2001 15:10:52 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Sintes",
"Alicia M.",
""
],
[
"Benoit",
"Patricia M.",
""
],
[
"Coley",
"Alan A.",
""
]
] | Perfect fluid spacetimes admitting a kinematic self-similarity of infinite type are investigated. In the case of plane, spherically or hyperbolically symmetric space-times the field equations reduce to a system of autonomous ordinary differential equations. The qualitative properties of solutions of this system of equa... |
gr-qc/0111022 | Girelli | Florian Girelli, Robert Oeckl, Alejandro Perez | Spin Foam Diagrammatics and Topological Invariance | 20 pages, latex with AMS macros and eps figures | Class.Quant.Grav. 19 (2002) 1093-1108 | 10.1088/0264-9381/19/6/305 | CPT-2001/P.4262, CGPG-01/10-1 | gr-qc hep-th math-ph math.MP | null | We provide a simple proof of the topological invariance of the Turaev-Viro
model (corresponding to simplicial 3d pure Euclidean gravity with cosmological
constant) by means of a novel diagrammatic formulation of the state sum models
for quantum BF-theories. Moreover, we prove the invariance under more general
conditi... | [
{
"created": "Wed, 7 Nov 2001 15:54:34 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Girelli",
"Florian",
""
],
[
"Oeckl",
"Robert",
""
],
[
"Perez",
"Alejandro",
""
]
] | We provide a simple proof of the topological invariance of the Turaev-Viro model (corresponding to simplicial 3d pure Euclidean gravity with cosmological constant) by means of a novel diagrammatic formulation of the state sum models for quantum BF-theories. Moreover, we prove the invariance under more general condition... |
2011.04508 | Mohsen Fathi | Mohsen Fathi, Marco Olivares, J.R. Villanueva | Ergosphere, photon region structure, and the shadow of a rotating
charged Weyl black hole | 22 pages, 34 figures | Galaxies 9(2), 43 (2021) | 10.3390/galaxies9020043 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we explore the photon region and the shadow of the rotating
counterpart of a static charged Weyl black hole, which has been previously
discussed according to null and time-like geodesics. The rotating black hole
shows strong sensitivity to the electric charge and the spin parameter, and its
shadow chan... | [
{
"created": "Mon, 9 Nov 2020 15:38:34 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Jun 2021 15:36:42 GMT",
"version": "v2"
}
] | 2021-06-21 | [
[
"Fathi",
"Mohsen",
""
],
[
"Olivares",
"Marco",
""
],
[
"Villanueva",
"J. R.",
""
]
] | In this paper, we explore the photon region and the shadow of the rotating counterpart of a static charged Weyl black hole, which has been previously discussed according to null and time-like geodesics. The rotating black hole shows strong sensitivity to the electric charge and the spin parameter, and its shadow change... |
1206.1154 | Kengo Shimada | Kengo Shimada, Susumu Okazawa, Satoshi Iso | The Einstein equation of state as the Clausius relation with an entropy
production | 16 pages, 2 figures, version to be published in PLB | null | 10.1016/j.physletb.2012.10.010 | KEK-TH-1551 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a modified derivation of the Einstein equation of state by
considering the Clausius relation $T\delta S-\delta N =\delta Q$ on a null
hypersurface with a non-vanishing expansion ($\theta \neq 0$), i.e. not in the
equilibrium. The derivation corresponds to choosing a specific observer to the
hypersurface, and ... | [
{
"created": "Wed, 6 Jun 2012 09:02:00 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Jun 2012 04:44:43 GMT",
"version": "v2"
},
{
"created": "Wed, 10 Oct 2012 10:53:04 GMT",
"version": "v3"
}
] | 2012-10-11 | [
[
"Shimada",
"Kengo",
""
],
[
"Okazawa",
"Susumu",
""
],
[
"Iso",
"Satoshi",
""
]
] | We give a modified derivation of the Einstein equation of state by considering the Clausius relation $T\delta S-\delta N =\delta Q$ on a null hypersurface with a non-vanishing expansion ($\theta \neq 0$), i.e. not in the equilibrium. The derivation corresponds to choosing a specific observer to the hypersurface, and su... |
1202.4893 | Hayato Motohashi | Tsutomu Kobayashi, Hayato Motohashi, Teruaki Suyama | Black hole perturbation in the most general scalar-tensor theory with
second-order field equations I: The odd-parity sector | 10 pages; v2. matches the published version in Phys. Rev. D; v3.
typos in Eqs. (A1), (A3)--(A5) fixed, results unchanged; v4. a typo in Eq.
(24) fixed, results unchanged; v5. a typo in Eq. (14) fixed, results
unchanged | Phys.Rev. D85 (2012) 084025 | 10.1103/PhysRevD.85.084025 | RESCEU-3/12; KUNS-2385 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a fully relativistic analysis of odd-type linear perturbations
around a static and spherically symmetric solution in the most general
scalar-tensor theory with second-order field equations in four-dimensional
spacetime. It is shown that, as in the case of general relativity, the
quadratic action for the pe... | [
{
"created": "Wed, 22 Feb 2012 12:45:58 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Oct 2012 02:44:51 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Nov 2014 21:00:20 GMT",
"version": "v3"
},
{
"created": "Thu, 2 Nov 2017 08:42:45 GMT",
"version": "v4"
},
{
"cr... | 2017-11-15 | [
[
"Kobayashi",
"Tsutomu",
""
],
[
"Motohashi",
"Hayato",
""
],
[
"Suyama",
"Teruaki",
""
]
] | We perform a fully relativistic analysis of odd-type linear perturbations around a static and spherically symmetric solution in the most general scalar-tensor theory with second-order field equations in four-dimensional spacetime. It is shown that, as in the case of general relativity, the quadratic action for the pert... |
2203.09417 | Antonio Gallerati | Antonio Gallerati and Giovanni Ummarino | Superconductors and gravity | 47 pages, 9 figures | Symmetry 14 (2022) 3, 554 | 10.3390/sym14030554 | null | gr-qc cond-mat.supr-con hep-ph hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review and discuss some recent developments on the unconventional
interaction between superconducting systems and the local gravitational field.
While it is known that gravitational perturbations (such as gravitational
waves) can affect supercondensates and supercurrents dynamics, here we want to
focus on the more... | [
{
"created": "Thu, 17 Mar 2022 16:16:05 GMT",
"version": "v1"
}
] | 2022-03-18 | [
[
"Gallerati",
"Antonio",
""
],
[
"Ummarino",
"Giovanni",
""
]
] | We review and discuss some recent developments on the unconventional interaction between superconducting systems and the local gravitational field. While it is known that gravitational perturbations (such as gravitational waves) can affect supercondensates and supercurrents dynamics, here we want to focus on the more s... |
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