id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1410.4486 | Daniela Pugliese Dr | Daniela Pugliese, Cosimo Stornaiolo | Deformations of three-dimensional metrics | 22 pages, 6 Tables | null | 10.1007/s10714-015-1864-x | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine three-dimensional metric deformations based on a tetrad
transformation through the action the matrices of scalar fields. We describe by
this approach to deformation the results obtained by Coll et al. in [1], where
it is stated that any three--dimensional metric was locally obtained as a
deformation of a c... | [
{
"created": "Thu, 16 Oct 2014 16:25:51 GMT",
"version": "v1"
}
] | 2015-02-05 | [
[
"Pugliese",
"Daniela",
""
],
[
"Stornaiolo",
"Cosimo",
""
]
] | We examine three-dimensional metric deformations based on a tetrad transformation through the action the matrices of scalar fields. We describe by this approach to deformation the results obtained by Coll et al. in [1], where it is stated that any three--dimensional metric was locally obtained as a deformation of a con... |
gr-qc/9903047 | Ali Shojai Baghini | Fatimah Shojai and Mehdi Golshani | On the General Covariance in the Bohmian Quantum Gravity | 17 pages, LaTeX | Int.J.Mod.Phys. A13 (1998) 2135-2144 | 10.1142/S0217751X98000950 | null | gr-qc | null | It is shown explicitly that in the framework of Bohmian quantum gravity, the
equations of motion of the space-time metric are Einstein's equations plus some
quantum corrections. It is observed that these corrections are not covariant.
So that in the framework of Bohmian quantum gravity the general covariance
principl... | [
{
"created": "Sat, 13 Mar 1999 13:08:49 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Shojai",
"Fatimah",
""
],
[
"Golshani",
"Mehdi",
""
]
] | It is shown explicitly that in the framework of Bohmian quantum gravity, the equations of motion of the space-time metric are Einstein's equations plus some quantum corrections. It is observed that these corrections are not covariant. So that in the framework of Bohmian quantum gravity the general covariance principle ... |
0710.3365 | Daniel Pollack | Piotr T. Chrusciel and Daniel Pollack | Singular Yamabe metrics and initial data with exactly
Kottler-Schwarzschild-de Sitter ends | Minor changes, updated references. Final version. To appear in
Annales Henri Poincare | AnnalesHenriPoincare9:639-654,2008 | 10.1007/s00023-008-0368-6 | null | gr-qc math.DG | null | We construct large families of initial data sets for the vacuum Einstein
equations with positive cosmological constant which contain exactly Delaunay
ends; these are non-trivial initial data sets which coincide with those for the
Kottler-Schwarzschild-de Sitter metrics in regions of infinite extent. From the
purely R... | [
{
"created": "Wed, 17 Oct 2007 18:07:29 GMT",
"version": "v1"
},
{
"created": "Sun, 9 Mar 2008 02:07:43 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Chrusciel",
"Piotr T.",
""
],
[
"Pollack",
"Daniel",
""
]
] | We construct large families of initial data sets for the vacuum Einstein equations with positive cosmological constant which contain exactly Delaunay ends; these are non-trivial initial data sets which coincide with those for the Kottler-Schwarzschild-de Sitter metrics in regions of infinite extent. From the purely Rie... |
gr-qc/9811013 | Jai-chan Hwang | H. Noh and J. Hwang | Cosmological perturbations in a gravity with quadratic order curvature
couplings | 5 pages, no figure, To appear in Phys. Rev. D | Phys.Rev.D59:047501,1999 | 10.1103/PhysRevD.59.047501 | null | gr-qc astro-ph | null | We present a set of equations describing the evolution of the scalar-type
cosmological perturbation in a gravity with general quadratic order curvature
coupling terms. Equations are presented in a gauge ready form, thus are ready
to implement various temporal gauge conditions depending on the problems. The
Ricci-curv... | [
{
"created": "Wed, 4 Nov 1998 07:23:35 GMT",
"version": "v1"
}
] | 2011-08-17 | [
[
"Noh",
"H.",
""
],
[
"Hwang",
"J.",
""
]
] | We present a set of equations describing the evolution of the scalar-type cosmological perturbation in a gravity with general quadratic order curvature coupling terms. Equations are presented in a gauge ready form, thus are ready to implement various temporal gauge conditions depending on the problems. The Ricci-curvat... |
2302.07889 | V\'ictor Jaramillo | V\'ictor Jaramillo, Erik Jim\'enez-V\'azquez and Dar\'io N\'u\~nez | Confinement of exotic matter. I. Static solutions | 13 pages, 14 figures | null | 10.1103/PhysRevD.107.064061 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the ${\cal E}$-boson star: A novel configuration of a boson star
with an exotic matter nucleus; the exotic matter being described by a real
massive scalar field with self-interaction term and kinetic term of the
opposite sign. The other scalar field is canonical, so that the system is
similar to the materi... | [
{
"created": "Wed, 15 Feb 2023 19:00:01 GMT",
"version": "v1"
}
] | 2023-04-05 | [
[
"Jaramillo",
"Víctor",
""
],
[
"Jiménez-Vázquez",
"Erik",
""
],
[
"Núñez",
"Darío",
""
]
] | We present the ${\cal E}$-boson star: A novel configuration of a boson star with an exotic matter nucleus; the exotic matter being described by a real massive scalar field with self-interaction term and kinetic term of the opposite sign. The other scalar field is canonical, so that the system is similar to the material... |
gr-qc/0002079 | Yasufumi Kojima | Yasufumi Kojima (Dept. of Phys., Hiroshima University) | Gravitational Waves from Relativistic Stars | 11 pages, Latex file without figures. Proceedings of Yukawa
International Seminar 99 | Prog.Theor.Phys.Suppl.136:135-145,1999 | 10.1143/PTPS.136.135 | null | gr-qc | null | Stellar pulsations in rotating relativistic stars are reviewed. Slow rotation
approximation is applied to solving the Einstein equations. The rotational
effects on the non-axisymmetric oscillations are explicitly shown in the polar
and axial modes.
| [
{
"created": "Wed, 23 Feb 2000 08:51:49 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kojima",
"Yasufumi",
"",
"Dept. of Phys., Hiroshima University"
]
] | Stellar pulsations in rotating relativistic stars are reviewed. Slow rotation approximation is applied to solving the Einstein equations. The rotational effects on the non-axisymmetric oscillations are explicitly shown in the polar and axial modes. |
2312.14513 | Hocheol Lee | Bum-Hoon Lee, Hocheol Lee, Wonwoo Lee, Nils A. Nilsson, Somyadip
Thakur | Induced Cosmological Anisotropies and CMB Anomalies by a non-Abelian
Gauge-Gravity Interaction | 29 pages, 19 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We present a non-abelian cousin of the model presented in [1] which induces
cosmological anisotropies on top of standard FLRW geometry. This is in some
sense doing a cosmological mean field approximation, where the mean field
cosmological model under consideration would be the standard FLRW, and the
induced anisotrop... | [
{
"created": "Fri, 22 Dec 2023 08:20:40 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Feb 2024 10:28:19 GMT",
"version": "v2"
}
] | 2024-02-13 | [
[
"Lee",
"Bum-Hoon",
""
],
[
"Lee",
"Hocheol",
""
],
[
"Lee",
"Wonwoo",
""
],
[
"Nilsson",
"Nils A.",
""
],
[
"Thakur",
"Somyadip",
""
]
] | We present a non-abelian cousin of the model presented in [1] which induces cosmological anisotropies on top of standard FLRW geometry. This is in some sense doing a cosmological mean field approximation, where the mean field cosmological model under consideration would be the standard FLRW, and the induced anisotropie... |
1810.10431 | Bogus{\l}aw Broda | Bogus{\l}aw Broda | Unitary evolution to a state with a fixed mean number of particles | 11 pages, 1 figure, accepted version | International Journal of Modern Physics A, Vol. 35, No. 33 (2020)
2050213 (11 pages) | 10.1142/S0217751X20502139 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the framework of finite-dimensional Fock space models, for a predefined
fixed mean number of particles $\bar{n}_{k}$, it is shown that there is a
``large'' multi-dimensional subspace $s_{\bar{n}_{k}}$ of initial pure states,
in the space $S$ of all pure states, unitarily evolving to a subspace
$S_{\bar{n}_{k}}$ of... | [
{
"created": "Wed, 24 Oct 2018 14:58:49 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Oct 2018 14:31:30 GMT",
"version": "v2"
},
{
"created": "Mon, 31 Dec 2018 13:47:16 GMT",
"version": "v3"
},
{
"created": "Fri, 29 Mar 2019 11:56:11 GMT",
"version": "v4"
},
{
"c... | 2020-12-10 | [
[
"Broda",
"Bogusław",
""
]
] | In the framework of finite-dimensional Fock space models, for a predefined fixed mean number of particles $\bar{n}_{k}$, it is shown that there is a ``large'' multi-dimensional subspace $s_{\bar{n}_{k}}$ of initial pure states, in the space $S$ of all pure states, unitarily evolving to a subspace $S_{\bar{n}_{k}}$ of f... |
1201.5498 | Luca Fabbri | Luca Fabbri, Stefano Vignolo | A modified theory of gravity with torsion and its applications to
cosmology and particle physics | 21 pages | Int.J.Theor.Phys.51, 3186-3207 (2012) | 10.1007/s10773-012-1199-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider the most general least-order derivative theory of
gravity in which not only curvature but also torsion is explicitly present in
the Lagrangian, and where all independent fields have their own coupling
constant: we will apply this theory to the case of ELKO fields, which is the
acronym of the... | [
{
"created": "Thu, 26 Jan 2012 12:15:20 GMT",
"version": "v1"
},
{
"created": "Wed, 30 May 2012 11:50:14 GMT",
"version": "v2"
},
{
"created": "Wed, 24 Apr 2013 14:22:01 GMT",
"version": "v3"
}
] | 2013-04-25 | [
[
"Fabbri",
"Luca",
""
],
[
"Vignolo",
"Stefano",
""
]
] | In this paper we consider the most general least-order derivative theory of gravity in which not only curvature but also torsion is explicitly present in the Lagrangian, and where all independent fields have their own coupling constant: we will apply this theory to the case of ELKO fields, which is the acronym of the G... |
gr-qc/0410087 | Francisco Lobo | Francisco S. N. Lobo | Energy conditions, traversable wormholes and dust shells | 11 pages, 3 figures, Revtex4 | Gen.Rel.Grav. 37 (2005) 2023-2038 | 10.1007/s10714-005-0177-x | null | gr-qc | null | Firstly, we review the pointwise and averaged energy conditions, the quantum
inequality and the notion of the ``volume integral quantifier'', which provides
a measure of the ``total amount'' of energy condition violating matter.
Secondly, we present a specific metric of a spherically symmetric traversable
wormhole in... | [
{
"created": "Mon, 18 Oct 2004 21:32:52 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Lobo",
"Francisco S. N.",
""
]
] | Firstly, we review the pointwise and averaged energy conditions, the quantum inequality and the notion of the ``volume integral quantifier'', which provides a measure of the ``total amount'' of energy condition violating matter. Secondly, we present a specific metric of a spherically symmetric traversable wormhole in t... |
1807.05050 | Yusuf Kucukakca | Yusuf Kucukakca | Noether symmetry analysis of anisotropic universe in $f(T,B)$ gravity | 13 pages, 9 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present work is devoted to investigate the Noether symmetries of the
locally rotationally symmetric Bianchi type I space time in $f(T,B)$ gravity
theory which depends on the torsion scalar $T$ and the boundary term $B$. In
this theory, we consider some particular models and investigate their Noether
symmetry gene... | [
{
"created": "Fri, 13 Jul 2018 13:18:28 GMT",
"version": "v1"
}
] | 2018-07-16 | [
[
"Kucukakca",
"Yusuf",
""
]
] | The present work is devoted to investigate the Noether symmetries of the locally rotationally symmetric Bianchi type I space time in $f(T,B)$ gravity theory which depends on the torsion scalar $T$ and the boundary term $B$. In this theory, we consider some particular models and investigate their Noether symmetry genera... |
2112.05388 | Cosimo Bambi | Swarnim Shashank, Cosimo Bambi | Constraining the Konoplya-Rezzolla-Zhidenko deformation parameters III:
limits from stellar-mass black holes using gravitational-wave observations | 11 pages, 2 figures. v2: refereed version | Phys. Rev. D 105, 104004 (2022) | 10.1103/PhysRevD.105.104004 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave observations of binary black holes provide a suitable
arena to test the fundamental nature of gravity in the strong-field regime.
Using the data of the inspiral of 29 events detected by the LIGO-Virgo
observatories, we perform a theory-agnostic test of the Kerr hypothesis. We
compute the leading-or... | [
{
"created": "Fri, 10 Dec 2021 08:46:56 GMT",
"version": "v1"
},
{
"created": "Wed, 4 May 2022 14:23:59 GMT",
"version": "v2"
}
] | 2022-05-05 | [
[
"Shashank",
"Swarnim",
""
],
[
"Bambi",
"Cosimo",
""
]
] | Gravitational-wave observations of binary black holes provide a suitable arena to test the fundamental nature of gravity in the strong-field regime. Using the data of the inspiral of 29 events detected by the LIGO-Virgo observatories, we perform a theory-agnostic test of the Kerr hypothesis. We compute the leading-orde... |
2106.03141 | Geoffrey Comp\`ere | Geoffrey Comp\`ere, Yan Liu, Jiang Long | Classification of radial Kerr geodesic motion | 80 pages, 12 tables, 41 figures, matches the published version up to
editorial changes of PRD | null | 10.1103/PhysRevD.105.024075 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We classify radial timelike geodesic motion of the exterior non-extremal Kerr
spacetime by performing a taxonomy of inequivalent root structures of the first
order radial geodesic equation using a novel compact notation and by
implementing the constraints from polar, time and azimuthal motion. Four
generic root struc... | [
{
"created": "Sun, 6 Jun 2021 14:44:17 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Feb 2022 12:35:44 GMT",
"version": "v2"
}
] | 2022-02-09 | [
[
"Compère",
"Geoffrey",
""
],
[
"Liu",
"Yan",
""
],
[
"Long",
"Jiang",
""
]
] | We classify radial timelike geodesic motion of the exterior non-extremal Kerr spacetime by performing a taxonomy of inequivalent root structures of the first order radial geodesic equation using a novel compact notation and by implementing the constraints from polar, time and azimuthal motion. Four generic root structu... |
2203.02673 | Dmitri Fursaev | E.A. Davydov, D.V. Fursaev, V.A. Tainov | Null Cosmic Strings: Scattering by Black Holes, Optics and Spacetime
Content | 22 pages, 3 figures, 2d version which corresponds to the published
manuscript | null | 10.1103/PhysRevD.105.083510 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Equations of motion of null cosmic strings near black holes, or other massive
sources, are solved exactly in the weak field approximation. The stress-energy
tensor of a null string in a curved spacetime is introduced and used to show
how scattering by black holes transforms linear and angular momenta of the
string. T... | [
{
"created": "Sat, 5 Mar 2022 07:11:16 GMT",
"version": "v1"
},
{
"created": "Sun, 17 Apr 2022 15:55:45 GMT",
"version": "v2"
}
] | 2022-04-27 | [
[
"Davydov",
"E. A.",
""
],
[
"Fursaev",
"D. V.",
""
],
[
"Tainov",
"V. A.",
""
]
] | Equations of motion of null cosmic strings near black holes, or other massive sources, are solved exactly in the weak field approximation. The stress-energy tensor of a null string in a curved spacetime is introduced and used to show how scattering by black holes transforms linear and angular momenta of the string. The... |
1201.3969 | Henrique de Andrade Gomes | Henrique Gomes | Breaking the uniqueness of the Shape Dynamics Hamiltonian | 14 pages, only metadata has changed: Abstract replaced to be rid of
references | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In earlier works on Shape Dynamics (SD), a linear method of solving a
particular set of Lichnerowicz-type equations through the implicit function
theorem was developed in order to implicitly construct SD's global Hamiltonian
and eliminate second class constraints. This method was later used for
extending Shape Dynami... | [
{
"created": "Thu, 19 Jan 2012 04:21:26 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Jan 2012 19:40:18 GMT",
"version": "v2"
}
] | 2012-01-23 | [
[
"Gomes",
"Henrique",
""
]
] | In earlier works on Shape Dynamics (SD), a linear method of solving a particular set of Lichnerowicz-type equations through the implicit function theorem was developed in order to implicitly construct SD's global Hamiltonian and eliminate second class constraints. This method was later used for extending Shape Dynamics... |
gr-qc/0005125 | Federico Piazza | Valeria Ferrari, Massimo Pauri, Federico Piazza | Quasi-normal modes of charged, dilaton black holes | 15 pages, 5 figures | Phys.Rev. D63 (2001) 064009 | 10.1103/PhysRevD.63.064009 | null | gr-qc astro-ph hep-th | null | In this paper we study the perturbations of the charged, dilaton black hole,
described by the solution of the low energy limit of the superstring action
found by Garfinkle, Horowitz and Strominger. We compute the complex frequencies
of the quasi-normal modes of this black hole, and compare the results with
those obta... | [
{
"created": "Mon, 29 May 2000 17:26:53 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Ferrari",
"Valeria",
""
],
[
"Pauri",
"Massimo",
""
],
[
"Piazza",
"Federico",
""
]
] | In this paper we study the perturbations of the charged, dilaton black hole, described by the solution of the low energy limit of the superstring action found by Garfinkle, Horowitz and Strominger. We compute the complex frequencies of the quasi-normal modes of this black hole, and compare the results with those obtain... |
gr-qc/0208043 | J. W. van Holten | M. Faquir and J.W. van Holten | Particle motion in electro-magnetic and gravitational pp-waves | 12 pages, no figures | null | null | NIKHEF/02-008 | gr-qc | null | We discuss the motion of neutral and charged particles in a plane
electro-magnetic wave and its accompanying gravitational field.
| [
{
"created": "Fri, 16 Aug 2002 14:07:59 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Faquir",
"M.",
""
],
[
"van Holten",
"J. W.",
""
]
] | We discuss the motion of neutral and charged particles in a plane electro-magnetic wave and its accompanying gravitational field. |
2004.00009 | Helvi Witek | Helvi Witek and Leonardo Gualtieri and Paolo Pani | Towards numerical relativity in scalar Gauss-Bonnet gravity: 3+1
decomposition beyond the small-coupling limit | 8 pages | Phys. Rev. D 101, 124055 (2020) | 10.1103/PhysRevD.101.124055 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scalar Gauss-Bonnet gravity is the only theory with quadratic curvature
corrections to general relativity whose field equations are of second
differential order. This theory allows for nonperturbative dynamical
corrections and is therefore one of the most compelling case studies for
beyond-general relativity effects ... | [
{
"created": "Tue, 31 Mar 2020 17:33:33 GMT",
"version": "v1"
}
] | 2020-07-01 | [
[
"Witek",
"Helvi",
""
],
[
"Gualtieri",
"Leonardo",
""
],
[
"Pani",
"Paolo",
""
]
] | Scalar Gauss-Bonnet gravity is the only theory with quadratic curvature corrections to general relativity whose field equations are of second differential order. This theory allows for nonperturbative dynamical corrections and is therefore one of the most compelling case studies for beyond-general relativity effects in... |
1104.3702 | Piotr Bizon | Piotr Bizo\'n and Andrzej Rostworowski | On weakly turbulent instability of anti-de Sitter space | 4 pages, 4 figures. Oops, in the previous versions the values of
parameters of initial data and horizon radii were given by mistake in units
used by us in numerical simulations $\ell=2/\pi$, instead of $\ell=1$. This
mistake in Eq.(9) is corrected and the vertical axis in Fig.1 is rescaled
accordingly | Phys.Rev.Lett.107:031102,2011 | 10.1103/PhysRevLett.107.031102 | null | gr-qc hep-th math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the nonlinear evolution of a weakly perturbed anti-de Sitter (AdS)
spacetime by solving numerically the four-dimensional spherically symmetric
Einstein-massless-scalar field equations with negative cosmological constant.
Our results suggest that AdS spacetime is unstable under arbitrarily small
generic pertu... | [
{
"created": "Tue, 19 Apr 2011 10:33:04 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Apr 2011 06:19:41 GMT",
"version": "v2"
},
{
"created": "Sat, 9 Jul 2011 12:48:12 GMT",
"version": "v3"
},
{
"created": "Thu, 1 Sep 2011 10:51:45 GMT",
"version": "v4"
},
{
"cre... | 2011-09-05 | [
[
"Bizoń",
"Piotr",
""
],
[
"Rostworowski",
"Andrzej",
""
]
] | We study the nonlinear evolution of a weakly perturbed anti-de Sitter (AdS) spacetime by solving numerically the four-dimensional spherically symmetric Einstein-massless-scalar field equations with negative cosmological constant. Our results suggest that AdS spacetime is unstable under arbitrarily small generic perturb... |
1609.08949 | David Hilditch | David Hilditch, Enno Harms, Marcus Bugner, Hannes Rueter and Bernd
Bruegmann | The evolution of hyperboloidal data with the dual foliation formalism:
Mathematical analysis and wave equation tests | 29 pages, 5 figures, 2 tables | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A long-standing problem in numerical relativity is the satisfactory treatment
of future null-infinity. We propose an approach for the evolution of
hyperboloidal initial data in which the outer boundary of the computational
domain is placed at infinity. The main idea is to apply the `dual foliation'
formalism in combi... | [
{
"created": "Wed, 28 Sep 2016 15:01:01 GMT",
"version": "v1"
}
] | 2016-09-29 | [
[
"Hilditch",
"David",
""
],
[
"Harms",
"Enno",
""
],
[
"Bugner",
"Marcus",
""
],
[
"Rueter",
"Hannes",
""
],
[
"Bruegmann",
"Bernd",
""
]
] | A long-standing problem in numerical relativity is the satisfactory treatment of future null-infinity. We propose an approach for the evolution of hyperboloidal initial data in which the outer boundary of the computational domain is placed at infinity. The main idea is to apply the `dual foliation' formalism in combina... |
gr-qc/0010015 | Shrirang S. Deshingkar | S. S. Deshingkar and P. S. Joshi | The structure of non-spacelike geodesics in dust collapse | 23 pages, 6 figures, to appear in PRD | Phys.Rev. D63 (2001) 024007 | 10.1103/PhysRevD.63.024007 | null | gr-qc | null | We study here the behaviour of non-spacelike geodesics in dust collapse
models in order to understand the casual structure of the spacetime. The
geodesic families coming out, when the singularity is naked, corresponding to
different initial data are worked out and analyzed. We also bring out the
similarity of the lim... | [
{
"created": "Wed, 4 Oct 2000 11:18:21 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Deshingkar",
"S. S.",
""
],
[
"Joshi",
"P. S.",
""
]
] | We study here the behaviour of non-spacelike geodesics in dust collapse models in order to understand the casual structure of the spacetime. The geodesic families coming out, when the singularity is naked, corresponding to different initial data are worked out and analyzed. We also bring out the similarity of the limit... |
1501.07358 | Ran Li | Ran Li, Junkun Zhao, Xinghua Wu, Yanming Zhang | Scalar clouds in charged stringy black hole-mirror system | 6 pages, 7 figures. Analytical Study of clouds in $qQ\gg 1$ regime is
added | Eur. Phys. J. C (2015) 75:142 | 10.1140/epjc/s10052-015-3370-4 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is reported that massive scalar fields can form bound states around Kerr
black holes [C. Herdeiro, and E. Radu, Phys. Rev. Lett. 112, 221101 (2014)].
These bound states are called scalar clouds, which have a real frequency
$\omega=m\Omega_H$, where $m$ is the azimuthal index and $\Omega_H$ is the
horizon angular v... | [
{
"created": "Thu, 29 Jan 2015 07:30:00 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Mar 2015 03:50:07 GMT",
"version": "v2"
}
] | 2015-04-21 | [
[
"Li",
"Ran",
""
],
[
"Zhao",
"Junkun",
""
],
[
"Wu",
"Xinghua",
""
],
[
"Zhang",
"Yanming",
""
]
] | It is reported that massive scalar fields can form bound states around Kerr black holes [C. Herdeiro, and E. Radu, Phys. Rev. Lett. 112, 221101 (2014)]. These bound states are called scalar clouds, which have a real frequency $\omega=m\Omega_H$, where $m$ is the azimuthal index and $\Omega_H$ is the horizon angular vel... |
1102.0529 | Eric Poisson | Eric Poisson, Adam Pound, and Ian Vega | The motion of point particles in curved spacetime | 162 pages. Major update of the 2004 version (arXiv:gr-qc/0306052)
initially published in Living Reviews in Relativity. This version contains a
thorough literature review (as of 2010) and a lot of new material. v3
reflects referee comments | null | 10.12942/lrr-2011-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This review is concerned with the motion of a point scalar charge, a point
electric charge, and a point mass in a specified background spacetime. In each
of the three cases the particle produces a field that behaves as outgoing
radiation in the wave zone, and therefore removes energy from the particle. In
the near zo... | [
{
"created": "Wed, 2 Feb 2011 18:40:22 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Feb 2011 18:55:11 GMT",
"version": "v2"
},
{
"created": "Mon, 26 Sep 2011 00:05:55 GMT",
"version": "v3"
}
] | 2015-05-27 | [
[
"Poisson",
"Eric",
""
],
[
"Pound",
"Adam",
""
],
[
"Vega",
"Ian",
""
]
] | This review is concerned with the motion of a point scalar charge, a point electric charge, and a point mass in a specified background spacetime. In each of the three cases the particle produces a field that behaves as outgoing radiation in the wave zone, and therefore removes energy from the particle. In the near zone... |
1910.00040 | Y. Jack Ng | Y. Jack Ng | Entropy and Gravitation: From Black Hole Computers to Dark Energy and
Dark Matter | 23 pages; LaTeX; invited review paper; typos corrected; references
added | null | 10.3390/e21111035 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the concept of entropy and the dynamics of gravitation provide
the linchpin in a unified scheme to understand the physics of black hole
computers, space-time foam, dark energy, dark matter and the phenomenon of
turbulence. We use three different methods to estimate the foaminess of
space-time, which, in ... | [
{
"created": "Mon, 30 Sep 2019 18:20:38 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Oct 2019 15:56:55 GMT",
"version": "v2"
}
] | 2020-01-08 | [
[
"Ng",
"Y. Jack",
""
]
] | We show that the concept of entropy and the dynamics of gravitation provide the linchpin in a unified scheme to understand the physics of black hole computers, space-time foam, dark energy, dark matter and the phenomenon of turbulence. We use three different methods to estimate the foaminess of space-time, which, in tu... |
gr-qc/0404049 | Pierluigi Fortini | P.Fortini (Department of Physics, University of Ferrara and Infn
Sezione di Ferrara, Italy) and A.Ortolan (Infn - National Laboratory of
Legnaro, Legnaro (PD) Italy) | Gravitational Waves and GRBs from Tidal Disruption of Stars in the
Center of Galaxies | 4 pages, 2 figures talk at Gamma Ray Burst Symposium - Santa Fe, New
Mexico (USA) September 8-12, 2003. There were added four new references and
the entrances of the two figures were written in a more clear way | Published on GRB 2003 Conference Proceedings by American Institute
for Physics (AIP) | 10.1063/1.1810826 | null | gr-qc | null | Recent measurements of the Chandra satellite have shown that a supermassive
black hole of $M = 2.6 \times 10^{6} M_{\odot}$ is located in the Galactic
Center; it seems probable that, from other observations, this fact is common in
the majority of galaxies. On the other hand, GRB explosions are typical
phenomenon link... | [
{
"created": "Mon, 12 Apr 2004 13:33:27 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Apr 2004 20:43:52 GMT",
"version": "v2"
},
{
"created": "Fri, 7 May 2004 09:01:39 GMT",
"version": "v3"
},
{
"created": "Fri, 14 May 2004 17:02:39 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Fortini",
"P.",
"",
"Department of Physics, University of Ferrara and Infn\n Sezione di Ferrara, Italy"
],
[
"Ortolan",
"A.",
"",
"Infn - National Laboratory of\n Legnaro, Legnaro"
]
] | Recent measurements of the Chandra satellite have shown that a supermassive black hole of $M = 2.6 \times 10^{6} M_{\odot}$ is located in the Galactic Center; it seems probable that, from other observations, this fact is common in the majority of galaxies. On the other hand, GRB explosions are typical phenomenon linked... |
2109.07044 | Yasusada Nambu | Yasusada Nambu and Sousuke Noda | Interferometry of black holes with Hawking radiation | 34 pages, Accepted version in Phys. Rev. D | null | 10.1103/PhysRevD.105.045022 | null | gr-qc physics.optics quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the wave optical imaging of black holes with Hawking
radiation. The spatial correlation function of Hawking radiation is expressed
in terms of transmission and reflection coefficients for scalar wave modes and
evaluated by numerically summing over angular quantum numbers for the
Unruh-Hawking state of ... | [
{
"created": "Wed, 15 Sep 2021 01:44:48 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Sep 2021 23:41:46 GMT",
"version": "v2"
},
{
"created": "Thu, 3 Feb 2022 04:48:06 GMT",
"version": "v3"
}
] | 2022-03-14 | [
[
"Nambu",
"Yasusada",
""
],
[
"Noda",
"Sousuke",
""
]
] | We investigate the wave optical imaging of black holes with Hawking radiation. The spatial correlation function of Hawking radiation is expressed in terms of transmission and reflection coefficients for scalar wave modes and evaluated by numerically summing over angular quantum numbers for the Unruh-Hawking state of th... |
gr-qc/9810037 | James D. E. Grant | James D.E. Grant | A Spinorial Hamiltonian Approach to Ricci-Flat Geometry | This paper has been removed by the author, following the publication
of a more complete version. See gr-qc/9812050 | null | null | null | gr-qc hep-th | null | The author has removed this paper, following the publication of a more
complete version.
| [
{
"created": "Fri, 9 Oct 1998 15:40:54 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Oct 1998 11:33:17 GMT",
"version": "v2"
},
{
"created": "Mon, 10 Jul 2000 12:12:57 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Grant",
"James D. E.",
""
]
] | The author has removed this paper, following the publication of a more complete version. |
2112.14203 | Camilo Posada PhD | Camilo Posada | Tidal deformability of ultracompact Schwarzschild stars and their
approach to the black hole limit | 11 pages, 3 figures. To appear in the Proceedings of RAGtime 23-25 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A well-known result in general relativity is that the tidal Love numbers of
black holes vanish. In contrast, different configurations to a black hole may
have non-vanishing Love numbers. For instance, it has been conjectured recently
that the Love number of generic exotic compact objects (ECOs) shows a
logarithmic be... | [
{
"created": "Tue, 28 Dec 2021 16:15:20 GMT",
"version": "v1"
}
] | 2021-12-30 | [
[
"Posada",
"Camilo",
""
]
] | A well-known result in general relativity is that the tidal Love numbers of black holes vanish. In contrast, different configurations to a black hole may have non-vanishing Love numbers. For instance, it has been conjectured recently that the Love number of generic exotic compact objects (ECOs) shows a logarithmic beha... |
gr-qc/9701031 | R. Loll | R. Loll (INFN, Firenze) | Quantizing canonical gravity in the real domain | 4 pages, LaTeX, uses sprocl.sty; to appear in the Proceedings of the
2nd International Sakharov Conference on Physics, Moscow, May 20-24, 1996 | Proc. 2nd Internat. Sakharov Conf. (World Scientific 1997) 280-283 | null | null | gr-qc | null | We advocate an alternative description of canonical gravity in 3+1
dimensions, obtained by using as the basic variable a real variant of the usual
Ashtekar connection variables on the spatial three-manifold. With this ansatz,
no non-trivial reality conditions have to be solved, and the Hamiltonian
constraint, though ... | [
{
"created": "Tue, 14 Jan 1997 19:31:20 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Loll",
"R.",
"",
"INFN, Firenze"
]
] | We advocate an alternative description of canonical gravity in 3+1 dimensions, obtained by using as the basic variable a real variant of the usual Ashtekar connection variables on the spatial three-manifold. With this ansatz, no non-trivial reality conditions have to be solved, and the Hamiltonian constraint, though no... |
gr-qc/9501036 | Matej Pavi | Matej Pavsic (Jozef Stefan Institute, University of Ljubljana) | The Classical and Quantum Theory of Relativistic p-Branes without
Constraints | 21 pages | NuovoCim.A108:221-236,1995 | 10.1007/BF02816743 | null | gr-qc | null | It is shown that a relativistic (i.e. a Poincar{\' e} invariant) theory of
extended objects (called p-branes) is not necessarily invariant under
reparametrizations of corresponding $p$-dimensional worldsheets (including
worldlines for $p = 0$). Consequnetly, no constraints among the dynamical
variables are necessary ... | [
{
"created": "Thu, 26 Jan 1995 17:10:41 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Pavsic",
"Matej",
"",
"Jozef Stefan Institute, University of Ljubljana"
]
] | It is shown that a relativistic (i.e. a Poincar{\' e} invariant) theory of extended objects (called p-branes) is not necessarily invariant under reparametrizations of corresponding $p$-dimensional worldsheets (including worldlines for $p = 0$). Consequnetly, no constraints among the dynamical variables are necessary an... |
2201.11414 | Qihong Huang | Qihong Huang, He Huang, Bing Xu, Feiquan Tu, Jun Chen | Dynamical analysis and statefinder of Barrow holographic dark energy | Accepted for publication in EPJC | Eur.Phys.J.C 81:686(2021) | 10.1140/epjc/s10052-021-09480-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the holographic principle and the Barrow entropy, Barrow holographic
dark energy had been proposed. In order to analyze the stability and the
evolution of Barrow holographic dark energy, we, in this paper, apply the
dynamical analysis and statefinder methods to Barrow holographic dark energy
with different I... | [
{
"created": "Thu, 27 Jan 2022 10:10:12 GMT",
"version": "v1"
}
] | 2022-01-28 | [
[
"Huang",
"Qihong",
""
],
[
"Huang",
"He",
""
],
[
"Xu",
"Bing",
""
],
[
"Tu",
"Feiquan",
""
],
[
"Chen",
"Jun",
""
]
] | Based on the holographic principle and the Barrow entropy, Barrow holographic dark energy had been proposed. In order to analyze the stability and the evolution of Barrow holographic dark energy, we, in this paper, apply the dynamical analysis and statefinder methods to Barrow holographic dark energy with different IR ... |
1912.11890 | Alexander Andrianov A | Alexander A. Andrianov, Yasser Elmahalawy and Artem Starodubtsev | Cylindrically symmetric 2+1 gravity in terms of global variables:quantum
dynamics | null | null | 10.1142/S0217751X2040031X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform quantization of a model in which gravity is coupled to a circular
dust shell in 2+1 spacetime dimensions. Canonical analysis shows that momentum
space of this model is ADS^2-space, and the global chart for it is provided by
the Euler angles. In quantum kinematics, this results in non-commutativity in
coord... | [
{
"created": "Thu, 26 Dec 2019 16:04:58 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Jan 2020 14:49:37 GMT",
"version": "v2"
}
] | 2020-03-18 | [
[
"Andrianov",
"Alexander A.",
""
],
[
"Elmahalawy",
"Yasser",
""
],
[
"Starodubtsev",
"Artem",
""
]
] | We perform quantization of a model in which gravity is coupled to a circular dust shell in 2+1 spacetime dimensions. Canonical analysis shows that momentum space of this model is ADS^2-space, and the global chart for it is provided by the Euler angles. In quantum kinematics, this results in non-commutativity in coordin... |
1311.3384 | Chengyong Zhang | Cheng-Yong Zhang, Yu Tian, Xiao-Ning Wu | Generalized Kerr/CFT correspondence with electromagnetic field | 14 pages | Class. Quantum Grav. 31 (2014) 085009 | 10.1088/0264-9381/31/8/085009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The electrovac axisymmetric extreme isolated horizon/CFT correspondence is
considered. By expansion techniques under the Bondi-like coordinates, it is
proved that the near horizon geometry of electrovac axisymmetric extreme
isolated horizon is unique. Furthermore, explicit coordinate transformation
between the Bondi-... | [
{
"created": "Thu, 14 Nov 2013 05:25:54 GMT",
"version": "v1"
}
] | 2014-04-23 | [
[
"Zhang",
"Cheng-Yong",
""
],
[
"Tian",
"Yu",
""
],
[
"Wu",
"Xiao-Ning",
""
]
] | The electrovac axisymmetric extreme isolated horizon/CFT correspondence is considered. By expansion techniques under the Bondi-like coordinates, it is proved that the near horizon geometry of electrovac axisymmetric extreme isolated horizon is unique. Furthermore, explicit coordinate transformation between the Bondi-li... |
0704.0782 | Oliver Rinne | Oliver Rinne, Lee Lindblom and Mark A. Scheel | Testing outer boundary treatments for the Einstein equations | Modified to agree with version accepted for publication in Class.
Quantum Grav | Class.Quant.Grav.24:4053-4078,2007 | 10.1088/0264-9381/24/16/006 | null | gr-qc | null | Various methods of treating outer boundaries in numerical relativity are
compared using a simple test problem: a Schwarzschild black hole with an
outgoing gravitational wave perturbation. Numerical solutions computed using
different boundary treatments are compared to a `reference' numerical solution
obtained by plac... | [
{
"created": "Thu, 5 Apr 2007 19:20:06 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Jul 2007 17:54:31 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Rinne",
"Oliver",
""
],
[
"Lindblom",
"Lee",
""
],
[
"Scheel",
"Mark A.",
""
]
] | Various methods of treating outer boundaries in numerical relativity are compared using a simple test problem: a Schwarzschild black hole with an outgoing gravitational wave perturbation. Numerical solutions computed using different boundary treatments are compared to a `reference' numerical solution obtained by placin... |
1809.07738 | Edward Anderson | Edward Anderson | Spaces of Observables from Solving PDEs. I. Translation-Invariant Theory | 33 pages including 3 Figures. Minor typos corrected | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Finding classical canonical observables consists of taking a function space
over phase space. For constrained theories, these functions must form zero
brackets with a closed algebraic structure of first-class constraints. This
brackets condition can moreover be recast as a first-order PDE system, to be
treated as a f... | [
{
"created": "Thu, 20 Sep 2018 16:57:22 GMT",
"version": "v1"
},
{
"created": "Sun, 7 Oct 2018 23:29:13 GMT",
"version": "v2"
}
] | 2018-10-09 | [
[
"Anderson",
"Edward",
""
]
] | Finding classical canonical observables consists of taking a function space over phase space. For constrained theories, these functions must form zero brackets with a closed algebraic structure of first-class constraints. This brackets condition can moreover be recast as a first-order PDE system, to be treated as a fre... |
1906.02548 | Jaume Haro | Jaume Haro and Llibert Arest\'e Sal\'o | Gravitational production of superheavy baryonic and dark matter in
quintessential inflation: nonconformally coupled case | 9 pages, 4 figures. Version accepted for publication in Phys. Rev. D.
arXiv admin note: substantial text overlap with arXiv:1904.02393 | Phys. Rev. D 100, 043519 (2019) | 10.1103/PhysRevD.100.043519 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational production of superheavy dark matter is studied in the
context of quintessential inflation. The superheavy particles, whose decay
products are baryonic matter and are the responsible for the reheating of the
universe after the end of the inflationary period, are not conformally coupled
with gravity.... | [
{
"created": "Thu, 6 Jun 2019 12:30:28 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Jul 2019 06:22:59 GMT",
"version": "v2"
}
] | 2019-08-21 | [
[
"Haro",
"Jaume",
""
],
[
"Saló",
"Llibert Aresté",
""
]
] | The gravitational production of superheavy dark matter is studied in the context of quintessential inflation. The superheavy particles, whose decay products are baryonic matter and are the responsible for the reheating of the universe after the end of the inflationary period, are not conformally coupled with gravity. O... |
1510.09205 | Kimet Jusufi | Kimet Jusufi | Dirac Particles Tunneling from Black Holes with Topological Defects | 9 pages, accepted for publication in Gen. Relativ. Gravit. (GRG) | Gen. Relativ. Gravit. 48, 105 (2016) | 10.1007/s10714-016-2101-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study Hawking radiation of Dirac particles with spin-$1/2$ as a tunneling
process from Schwarzschild-de Sitter and Reissner-Nordstr\"{o}m-de Sitter black
holes in background spacetimes with a spinning cosmic string and a global
monopole. Solving Dirac's equation by employing the Hamilton-Jacobi method and
WKB appr... | [
{
"created": "Fri, 30 Oct 2015 19:16:06 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Jun 2016 15:45:38 GMT",
"version": "v2"
}
] | 2016-07-06 | [
[
"Jusufi",
"Kimet",
""
]
] | We study Hawking radiation of Dirac particles with spin-$1/2$ as a tunneling process from Schwarzschild-de Sitter and Reissner-Nordstr\"{o}m-de Sitter black holes in background spacetimes with a spinning cosmic string and a global monopole. Solving Dirac's equation by employing the Hamilton-Jacobi method and WKB approx... |
gr-qc/0606039 | T.G Zlosnik | T.G. Zlosnik, P.G. Ferreira, Glenn D. Starkman | The Vector-Tensor nature of Bekenstein's relativistic theory of Modified
Gravity | Updated version: Notation cleaned up and some typos corrected-TGZ | Phys.Rev. D74 (2006) 044037 | 10.1103/PhysRevD.74.044037 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bekenstein's theory of relativistic gravity is conventionally written as a
bi-metric theory. The two metrics are related by a disformal transformation
defined by a dynamical vector field and a scalar field. In this comment we show
that the theory can be re-written as Vector-Tensor theory akin to
Einstein-Aether theor... | [
{
"created": "Fri, 9 Jun 2006 03:14:34 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Feb 2014 17:08:01 GMT",
"version": "v2"
}
] | 2014-02-18 | [
[
"Zlosnik",
"T. G.",
""
],
[
"Ferreira",
"P. G.",
""
],
[
"Starkman",
"Glenn D.",
""
]
] | Bekenstein's theory of relativistic gravity is conventionally written as a bi-metric theory. The two metrics are related by a disformal transformation defined by a dynamical vector field and a scalar field. In this comment we show that the theory can be re-written as Vector-Tensor theory akin to Einstein-Aether theorie... |
gr-qc/0407095 | Schmidt H.-J. | H.-J. Schmidt | Lectures on Mathematical Cosmology | 202 pages, Latex | null | null | null | gr-qc | null | We present mathematical details of several cosmological models, whereby the
topological and the geometrical background will be emphasized.
| [
{
"created": "Mon, 26 Jul 2004 05:43:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Schmidt",
"H. -J.",
""
]
] | We present mathematical details of several cosmological models, whereby the topological and the geometrical background will be emphasized. |
0908.4247 | Carlos Molina Mendes | Alan B. Pavan, E. Abdalla, C. Molina | Stability, causality and quasinormal modes of cosmic strings and
cylinders | 13 pages, 3 figures, 6 graph files, 4 tables | Phys.Rev.D81:044003,2010 | 10.1103/PhysRevD.81.044003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we consider the evolution of a massive scalar field in
cylindrically symmetric space-times. Quasinormal modes have been calculated for
static and rotating cosmic cylinders. We found unstable modes in some cases.
Rotating as well as static cosmic strings, i.e., without regular interior
solutions, do not d... | [
{
"created": "Fri, 28 Aug 2009 18:20:10 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Pavan",
"Alan B.",
""
],
[
"Abdalla",
"E.",
""
],
[
"Molina",
"C.",
""
]
] | In this work we consider the evolution of a massive scalar field in cylindrically symmetric space-times. Quasinormal modes have been calculated for static and rotating cosmic cylinders. We found unstable modes in some cases. Rotating as well as static cosmic strings, i.e., without regular interior solutions, do not dis... |
2106.14462 | Matteo Luca Ruggiero | Lorenzo Iorio, Matteo Luca Ruggiero | Perturbations of the orbital elements due to the magnetic-like part of
the field of a plane gravitational wave | 10 pages, to appear in International Journal of Modern Physics D | International Journal of Modern Physics D Vol. 30, No. 12 (2021)
2150088 | 10.1142/S0218271821500887 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We focus on the secular changes of the orbital elements of a planet in the
solar system, determined by the magnetic-like part of a gravitational wave
field. Using Fermi coordinates we show that the total force acting on a test
particle is made of two contributions: a gravito-electric one and a
gravito-magnetic one. W... | [
{
"created": "Mon, 28 Jun 2021 08:22:36 GMT",
"version": "v1"
}
] | 2021-10-12 | [
[
"Iorio",
"Lorenzo",
""
],
[
"Ruggiero",
"Matteo Luca",
""
]
] | We focus on the secular changes of the orbital elements of a planet in the solar system, determined by the magnetic-like part of a gravitational wave field. Using Fermi coordinates we show that the total force acting on a test particle is made of two contributions: a gravito-electric one and a gravito-magnetic one. Whi... |
2012.01043 | Chao Zhang | Chao Zhang, Yungui Gong, Bin Wang and Chunyu Zhang | Accuracy of estimation of parameters with space-borne gravitational wave
observatory | 17 pages, 8 figures, 1 tables | Phys. Rev. D 103, 104066 (2021) | 10.1103/PhysRevD.103.104066 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Employing the Fisher information matrix analysis, we estimate parameter
errors of TianQin and LISA for monochromatic gravitational waves. With the
long-wavelength approximation we derive analytical formulas for the parameter
estimation errors. We separately analyze the effects of the amplitude
modulation due to the c... | [
{
"created": "Wed, 2 Dec 2020 09:26:33 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Apr 2021 04:36:54 GMT",
"version": "v2"
}
] | 2021-06-02 | [
[
"Zhang",
"Chao",
""
],
[
"Gong",
"Yungui",
""
],
[
"Wang",
"Bin",
""
],
[
"Zhang",
"Chunyu",
""
]
] | Employing the Fisher information matrix analysis, we estimate parameter errors of TianQin and LISA for monochromatic gravitational waves. With the long-wavelength approximation we derive analytical formulas for the parameter estimation errors. We separately analyze the effects of the amplitude modulation due to the cha... |
1205.1119 | Vojtech Pravda | Marcello Ortaggio, Vojtech Pravda, Alena Pravdova and Harvey S. Reall | On a five-dimensional version of the Goldberg-Sachs theorem | 26 pages | Class. Quantum Grav. 29: 205002, 2012 | 10.1088/0264-9381/29/20/205002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Previous work has found a higher-dimensional generalization of the "geodesic
part" of the Goldberg-Sachs theorem. We investigate the generalization of the
"shear-free part" of the theorem. A spacetime is defined to be algebraically
special if it admits a multiple Weyl Aligned Null Direction (WAND). The
algebraically ... | [
{
"created": "Sat, 5 May 2012 10:14:12 GMT",
"version": "v1"
}
] | 2012-09-18 | [
[
"Ortaggio",
"Marcello",
""
],
[
"Pravda",
"Vojtech",
""
],
[
"Pravdova",
"Alena",
""
],
[
"Reall",
"Harvey S.",
""
]
] | Previous work has found a higher-dimensional generalization of the "geodesic part" of the Goldberg-Sachs theorem. We investigate the generalization of the "shear-free part" of the theorem. A spacetime is defined to be algebraically special if it admits a multiple Weyl Aligned Null Direction (WAND). The algebraically sp... |
gr-qc/9710032 | Hans Kastrup | H.A. Kastrup (RWTH Aachen) | Canonical Quantum Statistics of Schwarzschild Black Holes and Ising
Droplet Nucleation | 17 pages, LateX ; a brief note added indicating the generalization of
a key result from 3+1 to d+1 dimensions; paper to appear in Physics Letters B | Phys.Lett. B419 (1998) 40-48 | 10.1016/S0370-2693(97)01460-3 | PITHA 97/40 | gr-qc cond-mat hep-th | null | Recently is was shown that the imaginary part of the canonical partition
function of Schwarzschild black holes with an energy spectrum E_n = \sigma
\sqrt{n} E_P, n= 1,2, ..., has properties which - naively interpreted - leads
to the expected unusual thermodynamical properties of such black holes (Hawking
temperature,... | [
{
"created": "Mon, 6 Oct 1997 11:59:48 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Nov 1997 11:13:12 GMT",
"version": "v2"
}
] | 2009-10-30 | [
[
"Kastrup",
"H. A.",
"",
"RWTH Aachen"
]
] | Recently is was shown that the imaginary part of the canonical partition function of Schwarzschild black holes with an energy spectrum E_n = \sigma \sqrt{n} E_P, n= 1,2, ..., has properties which - naively interpreted - leads to the expected unusual thermodynamical properties of such black holes (Hawking temperature, B... |
1101.0219 | Salvatore Capozziello | S. Capozziello, M. De Laurentis, S.D. Odintsov, A. Stabile | Hydrostatic equilibrium and stellar structure in f(R)-gravity | 9 pages, 1 figure | Phys.Rev.D83:064004,2011 | 10.1103/PhysRevD.83.064004 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the hydrostatic equilibrium of stellar structure by taking
into account the modi- fied La\'e-Emden equation coming out from f(R)-gravity.
Such an equation is obtained in metric approach by considering the Newtonian
limit of f(R)-gravity, which gives rise to a modified Poisson equation, and
then introdu... | [
{
"created": "Fri, 31 Dec 2010 08:45:39 GMT",
"version": "v1"
}
] | 2011-03-21 | [
[
"Capozziello",
"S.",
""
],
[
"De Laurentis",
"M.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Stabile",
"A.",
""
]
] | We investigate the hydrostatic equilibrium of stellar structure by taking into account the modi- fied La\'e-Emden equation coming out from f(R)-gravity. Such an equation is obtained in metric approach by considering the Newtonian limit of f(R)-gravity, which gives rise to a modified Poisson equation, and then introduci... |
2001.05825 | Luca Buoninfante | Luca Buoninfante, Gaetano Lambiase, Giuseppe Gaetano Luciano, Luciano
Petruzziello | Phenomenology of GUP stars | 8 pages. V2: minor changes, results unchanged, version accepted for
publication in EPJC | null | 10.1140/epjc/s10052-020-08436-3 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study quantum corrections at the horizon scale of a black hole induced by
a Generalized Uncertainty Principle (GUP) with a quadratic term in the
momentum. The interplay between quantum mechanics and gravity manifests itself
into a non-zero uncertainty in the location of the black hole radius, which
turns out to be... | [
{
"created": "Thu, 16 Jan 2020 14:46:34 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Sep 2020 10:40:08 GMT",
"version": "v2"
}
] | 2020-10-28 | [
[
"Buoninfante",
"Luca",
""
],
[
"Lambiase",
"Gaetano",
""
],
[
"Luciano",
"Giuseppe Gaetano",
""
],
[
"Petruzziello",
"Luciano",
""
]
] | We study quantum corrections at the horizon scale of a black hole induced by a Generalized Uncertainty Principle (GUP) with a quadratic term in the momentum. The interplay between quantum mechanics and gravity manifests itself into a non-zero uncertainty in the location of the black hole radius, which turns out to be l... |
gr-qc/0602035 | Jacek Tafel | J. Tafel | New Description of Self-Dual Metrics | null | null | null | null | gr-qc | null | We show that Pleba\'nski's equation for self-dual metrics is equivalent to a
pair of equations describing canonical transformations in 2-dimensional phase
spaces. Examples of linearizations of these equations are given.
| [
{
"created": "Thu, 9 Feb 2006 20:20:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Tafel",
"J.",
""
]
] | We show that Pleba\'nski's equation for self-dual metrics is equivalent to a pair of equations describing canonical transformations in 2-dimensional phase spaces. Examples of linearizations of these equations are given. |
1506.04755 | Maarten van de Meent | Maarten van de Meent and Abhay G. Shah | Metric perturbations produced by eccentric equatorial orbits around a
Kerr black hole | Fix typo in eq 60 | Phys. Rev. D 92, 064025 (2015) | 10.1103/PhysRevD.92.064025 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the first numerical calculation of the (local) metric perturbation
produced by a small compact object moving on an eccentric equatorial geodesic
around a Kerr black hole, accurate to first order in the mass ratio. The
procedure starts by first solving the Teukolsky equation to obtain the Weyl
scalar $\psi_... | [
{
"created": "Mon, 15 Jun 2015 20:00:55 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Jul 2015 15:29:53 GMT",
"version": "v2"
},
{
"created": "Wed, 17 Aug 2016 10:37:09 GMT",
"version": "v3"
},
{
"created": "Mon, 25 May 2020 16:24:26 GMT",
"version": "v4"
}
] | 2020-05-26 | [
[
"van de Meent",
"Maarten",
""
],
[
"Shah",
"Abhay G.",
""
]
] | We present the first numerical calculation of the (local) metric perturbation produced by a small compact object moving on an eccentric equatorial geodesic around a Kerr black hole, accurate to first order in the mass ratio. The procedure starts by first solving the Teukolsky equation to obtain the Weyl scalar $\psi_4$... |
1611.03853 | Tanmay Vachaspati | Tanmay Vachaspati | Gravitational Waves, Gamma Ray Bursts, and Black Stars | 6 pages. Essay based on arXiv:0706.1203. Honorable mention in the
2016 Gravity Research Foundation Essay Competition | IJMPD Vol. 25, No. 12, 1644025 (2016) | 10.1142/S0218271816440259 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Stars that are collapsing toward forming a black hole but appear frozen near
their Schwarzschild horizon are termed "black stars". The collision of two
black stars leads to gravitational radiation during the merging phase followed
by a delayed gamma ray burst during coalescence. The recent observation of
gravitationa... | [
{
"created": "Fri, 11 Nov 2016 20:58:34 GMT",
"version": "v1"
}
] | 2016-11-14 | [
[
"Vachaspati",
"Tanmay",
""
]
] | Stars that are collapsing toward forming a black hole but appear frozen near their Schwarzschild horizon are termed "black stars". The collision of two black stars leads to gravitational radiation during the merging phase followed by a delayed gamma ray burst during coalescence. The recent observation of gravitational ... |
1810.09375 | Zbigniew Haba | Z. Haba | Stochastic wave equation with thermal noise in an expanding universe | published corrected version | Phys.Lett.792B,320(2019) | 10.1016/j.physletb.2019.04.003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss Einstein-Klein-Gordon system in an environment of an infinite
number of scalar fields leading to an external thermal noise. In the lowest
order of metric and field perturbations the quadratic fluctuations consist of a
sum of quantum and thermal fluctuations. We show that these fluctuations depend
on the fo... | [
{
"created": "Mon, 22 Oct 2018 15:44:35 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Apr 2019 19:46:34 GMT",
"version": "v2"
}
] | 2019-05-22 | [
[
"Haba",
"Z.",
""
]
] | We discuss Einstein-Klein-Gordon system in an environment of an infinite number of scalar fields leading to an external thermal noise. In the lowest order of metric and field perturbations the quadratic fluctuations consist of a sum of quantum and thermal fluctuations. We show that these fluctuations depend on the form... |
gr-qc/0212113 | Kiyoshi Shiraishi | Nahomi Kan and Kiyoshi Shiraishi (Yamaguchi University) | Multi-graviton theory, a latticized dimension, and the cosmological
constant | 10 pages, No figure. Needs REVTeX4. citations are corrected and minor
corrections | Class.Quant.Grav. 20 (2003) 4965-4972 | 10.1088/0264-9381/20/23/001 | Guchi-TP-014 | gr-qc astro-ph hep-ph hep-th | null | Beginning with the Pauli-Fierz theory, we construct a model for
multi-graviton theory. Couplings between gravitons belonging to
nearest-neighbor ``theory spaces'' lead to a discrete mass spectrum. Our model
coincides with the Kaluza-Klein theory whose fifth dimension is latticized.
We evaluate one-loop vacuum energ... | [
{
"created": "Fri, 27 Dec 2002 11:04:50 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jan 2003 03:07:35 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Kan",
"Nahomi",
"",
"Yamaguchi University"
],
[
"Shiraishi",
"Kiyoshi",
"",
"Yamaguchi University"
]
] | Beginning with the Pauli-Fierz theory, we construct a model for multi-graviton theory. Couplings between gravitons belonging to nearest-neighbor ``theory spaces'' lead to a discrete mass spectrum. Our model coincides with the Kaluza-Klein theory whose fifth dimension is latticized. We evaluate one-loop vacuum energy in... |
1707.07537 | Georgios Lukes Gerakopoulos | Georgios Lukes-Gerakopoulos, Enno Harms, Sebastiano Bernuzzi,
Alessandro Nagar | Spinning test-body orbiting around a Kerr black hole: circular dynamics
and gravitational-wave fluxes | 12 pages, 4 figures, 7 tables | Phys. Rev. D 96, 064051 (2017) | 10.1103/PhysRevD.96.064051 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent work, [Phys. Rev. D. 94, 104010 (2016)], hereafter Paper I, we
have numerically studied different prescriptions for the dynamics of a spinning
particle in circular motion around a Schwarzschild black hole. In the present
work, we continue this line of investigation to the rotating Kerr black hole.
We cons... | [
{
"created": "Mon, 24 Jul 2017 13:21:14 GMT",
"version": "v1"
}
] | 2017-10-02 | [
[
"Lukes-Gerakopoulos",
"Georgios",
""
],
[
"Harms",
"Enno",
""
],
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Nagar",
"Alessandro",
""
]
] | In a recent work, [Phys. Rev. D. 94, 104010 (2016)], hereafter Paper I, we have numerically studied different prescriptions for the dynamics of a spinning particle in circular motion around a Schwarzschild black hole. In the present work, we continue this line of investigation to the rotating Kerr black hole. We consid... |
0706.4437 | Thomas Cokelaer | Thomas Cokelaer | Gravitational waves from inspiralling compact binaries: hexagonal
template placement and its efficiency in detecting physical signals | 15 pages, 43 figures | Phys.Rev.D76:102004,2007 | 10.1103/PhysRevD.76.102004 | null | gr-qc | null | Matched filtering is used to search for gravitational waves emitted by
inspiralling compact binaries in data from the ground-based interferometers.
One of the key aspects of the detection process is the design of a template
bank that covers the astrophysically pertinent parameter space. In an earlier
paper, we descri... | [
{
"created": "Fri, 29 Jun 2007 18:46:50 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Cokelaer",
"Thomas",
""
]
] | Matched filtering is used to search for gravitational waves emitted by inspiralling compact binaries in data from the ground-based interferometers. One of the key aspects of the detection process is the design of a template bank that covers the astrophysically pertinent parameter space. In an earlier paper, we describe... |
1001.0332 | Alexander Burinskii | Alexander Burinskii | Fluctuating Twistor-Beam Solutions and Holographic Pre-Quantum
Kerr-Schild Geometry | 10 pages, 3 figures, talk at the 1-th Mediteranien Conf.
Class.Quant.Grav | J.Phys.Conf.Ser.222:012044,2010 | 10.1088/1742-6596/222/1/012044 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Kerr-Schild (KS) geometry is based on a congruence of twistor null lines
which forms a holographic space-time determined by the Kerr theorem. We
describe in details integration of the non-stationary Debney-Kerr-Schild
equations for electromagnetic excitations of black-holes taking into account
the consistent back-rea... | [
{
"created": "Sat, 2 Jan 2010 20:29:16 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jun 2010 13:48:11 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Burinskii",
"Alexander",
""
]
] | Kerr-Schild (KS) geometry is based on a congruence of twistor null lines which forms a holographic space-time determined by the Kerr theorem. We describe in details integration of the non-stationary Debney-Kerr-Schild equations for electromagnetic excitations of black-holes taking into account the consistent back-react... |
1301.5428 | Galina Lipunova | V. M. Lipunov | Tachyon motion in a black hole gravitational field | This English translation features the work that was published 35
years ago and was one of the first investigations of tachyons in the general
relativity. As well as giving a solution to a specific problem, the paper put
forward several ideas: birth of tachyons in the pre-Planck era, shock type of
gravitational ... | Astrometriia i Astrofizika, no. 35, 1978, p. 98-101 (Russian) | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The motion of superluminal particles in the gravitational field of a
non-rotating black hole is analyzed. The relativistic Hamilton-Jacobi equation
is solved for particles with imaginary rest mass. It is shown that there are no
stable circular orbits and generally no finite motions for tachyons in the
Schwarzschild m... | [
{
"created": "Wed, 23 Jan 2013 08:24:46 GMT",
"version": "v1"
}
] | 2013-01-24 | [
[
"Lipunov",
"V. M.",
""
]
] | The motion of superluminal particles in the gravitational field of a non-rotating black hole is analyzed. The relativistic Hamilton-Jacobi equation is solved for particles with imaginary rest mass. It is shown that there are no stable circular orbits and generally no finite motions for tachyons in the Schwarzschild met... |
gr-qc/9508016 | Jean-Guy Demers | J.- G. Demers | Decoherence of the Unruh Detector | Latex2e, 5 pages, includes one figure. To appear in the proceedings
of the sixth Canadian Conference on General Relativity and Relativistic
Astrophysics, May 1995 | null | null | McGill 95-43 | gr-qc | null | As it is well known, the Minkowski vacuum appears thermally populated to a
quantum mechanical detector on a uniformly accelerating course. We investigate
how this thermal radiation may contribute to the classical nature of the
detector's trajectory through the criteria of decoherence. An uncertainty-type
relation is ... | [
{
"created": "Mon, 7 Aug 1995 19:56:26 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Aug 1995 14:58:03 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Demers",
"J. - G.",
""
]
] | As it is well known, the Minkowski vacuum appears thermally populated to a quantum mechanical detector on a uniformly accelerating course. We investigate how this thermal radiation may contribute to the classical nature of the detector's trajectory through the criteria of decoherence. An uncertainty-type relation is ob... |
1806.05023 | Paul Klinger | Paul Klinger | Non-degeneracy of Riemannian Schwarzschild-anti de Sitter metrics:
Birkhoff-type results in linearized gravity | 12 pages | null | null | UWThPh-2018-18 | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove Birkhoff-type results showing that $L^2$ solutions of the linearized
Einstein equations around Riemannian Kottler ("Schwarzschild-anti de Sitter")
metrics in arbitrary dimension and horizon topology, which are not controlled
by "master functions" are pure gauge. Together with earlier results this
implies tha... | [
{
"created": "Wed, 13 Jun 2018 13:24:32 GMT",
"version": "v1"
}
] | 2018-06-14 | [
[
"Klinger",
"Paul",
""
]
] | We prove Birkhoff-type results showing that $L^2$ solutions of the linearized Einstein equations around Riemannian Kottler ("Schwarzschild-anti de Sitter") metrics in arbitrary dimension and horizon topology, which are not controlled by "master functions" are pure gauge. Together with earlier results this implies that ... |
2108.12186 | Anirban Chatterjee | Anirban Chatterjee, Abhijit Bandyopadhyay and Biswajit Jana | Dynamical analysis of $k$-essence cosmology in the light of Supernova Ia
observations | 22 pages, 7 figures, 3 tables; Accepted for publication in European
Physical Journal Plus | European Physical Journal Plus (2022) 137:518 | 10.1140/epjp/s13360-022-02747-y | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we analyse the JLA data on Supernova observations in the
context of $k-$essence dark energy model with Lagrangian $L=VF(X)$, with a
constant potential $V$ and the dynamical term $X =
(1/2)\nabla_{\mu}\phi\nabla_{\nu}\phi = \dot{\phi}^2/2$ for a homogeneous
scalar field $\phi(t)$, in a flat FRW spacetim... | [
{
"created": "Fri, 27 Aug 2021 09:10:31 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Apr 2022 18:15:38 GMT",
"version": "v2"
}
] | 2022-04-29 | [
[
"Chatterjee",
"Anirban",
""
],
[
"Bandyopadhyay",
"Abhijit",
""
],
[
"Jana",
"Biswajit",
""
]
] | In this paper, we analyse the JLA data on Supernova observations in the context of $k-$essence dark energy model with Lagrangian $L=VF(X)$, with a constant potential $V$ and the dynamical term $X = (1/2)\nabla_{\mu}\phi\nabla_{\nu}\phi = \dot{\phi}^2/2$ for a homogeneous scalar field $\phi(t)$, in a flat FRW spacetime ... |
2402.15468 | Marc Casals | Marc Casals, Stefan Hollands, Adam Pound and Vahid Toomani | Spin-2 Green's Functions on Kerr in Radiation Gauge | 43 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct retarded and advanced Green's functions for gravitational
perturbations in Kerr in an ingoing radiation gauge. Our Green's functions have
a frequency domain piece that has previously been obtained by Ori [Phys. Rev. D
67 (2003)] based on the Chrzanowski-Cohen-Kegeles metric reconstruction method.
As is w... | [
{
"created": "Fri, 23 Feb 2024 17:58:05 GMT",
"version": "v1"
}
] | 2024-02-26 | [
[
"Casals",
"Marc",
""
],
[
"Hollands",
"Stefan",
""
],
[
"Pound",
"Adam",
""
],
[
"Toomani",
"Vahid",
""
]
] | We construct retarded and advanced Green's functions for gravitational perturbations in Kerr in an ingoing radiation gauge. Our Green's functions have a frequency domain piece that has previously been obtained by Ori [Phys. Rev. D 67 (2003)] based on the Chrzanowski-Cohen-Kegeles metric reconstruction method. As is wel... |
0812.3960 | Philippe G. LeFloch | Philippe G. LeFloch | Local canonical foliations of Lorentzian manifolds with bounded
curvature | 22 pages | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider pointed Lorentzian manifolds and construct "canonical" foliations
by constant mean curvature (CMC) hypersurfaces. Our result assumes a uniform
bound on the local sup-norm of the curvature of the manifold and on its local
injectivity radius, only. The prescribed curvature problem under consideration
is a n... | [
{
"created": "Sat, 20 Dec 2008 12:06:59 GMT",
"version": "v1"
}
] | 2008-12-24 | [
[
"LeFloch",
"Philippe G.",
""
]
] | We consider pointed Lorentzian manifolds and construct "canonical" foliations by constant mean curvature (CMC) hypersurfaces. Our result assumes a uniform bound on the local sup-norm of the curvature of the manifold and on its local injectivity radius, only. The prescribed curvature problem under consideration is a non... |
0712.1770 | Claudio Dappiaggi | C. Dappiaggi, V. Moretti and N. Pinamonti | Cosmological horizons and reconstruction of quantum field theories | 32 pages, 1 figure, to appear on Comm. Math. Phys., dedicated to
Professor Klaus Fredenhagen on the occasion of his 60th birthday | Comm.Math.Phys.285:1129-1163,2009;
Commun.Math.Phys.285:1129-1163,2009 | 10.1007/s00220-008-0653-8 | Desy 07-218, UTM 718, ZMP-HH/07-12 | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As a starting point, we state some relevant geometrical properties enjoyed by
the cosmological horizon of a certain class of Friedmann-Robertson-Walker
backgrounds. Those properties are generalised to a larger class of expanding
spacetimes $M$ admitting a geodesically complete cosmological horizon $\scrim$
common to ... | [
{
"created": "Tue, 11 Dec 2007 17:03:45 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Jan 2008 10:51:04 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Jul 2008 16:42:43 GMT",
"version": "v3"
}
] | 2009-01-19 | [
[
"Dappiaggi",
"C.",
""
],
[
"Moretti",
"V.",
""
],
[
"Pinamonti",
"N.",
""
]
] | As a starting point, we state some relevant geometrical properties enjoyed by the cosmological horizon of a certain class of Friedmann-Robertson-Walker backgrounds. Those properties are generalised to a larger class of expanding spacetimes $M$ admitting a geodesically complete cosmological horizon $\scrim$ common to al... |
2107.03293 | Marc Geiller | Alexandre Arbey, J\'er\'emy Auffinger, Marc Geiller, Etera R. Livine,
Francesco Sartini | Hawking radiation by spherically-symmetric static black holes for all
spins: II -- Numerical emission rates, analytical limits and new constraints | 22 pages, 8 figures, second in a series of 2 articles | Phys. Rev. D 104, 084016 (2021) | 10.1103/PhysRevD.104.084016 | CERN-TH-2021-105 | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the companion paper [Phys. Rev. D 103 (2021) 10, [2101.02951]] we have
derived the short-ranged potentials for the Teukolsky equations for massless
spins $(0,1/2,1,2)$ in general spherically-symmetric and static metrics. Here
we apply these results to numerically compute the Hawking radiation spectra of
such parti... | [
{
"created": "Wed, 7 Jul 2021 15:27:54 GMT",
"version": "v1"
}
] | 2021-10-05 | [
[
"Arbey",
"Alexandre",
""
],
[
"Auffinger",
"Jérémy",
""
],
[
"Geiller",
"Marc",
""
],
[
"Livine",
"Etera R.",
""
],
[
"Sartini",
"Francesco",
""
]
] | In the companion paper [Phys. Rev. D 103 (2021) 10, [2101.02951]] we have derived the short-ranged potentials for the Teukolsky equations for massless spins $(0,1/2,1,2)$ in general spherically-symmetric and static metrics. Here we apply these results to numerically compute the Hawking radiation spectra of such particl... |
2004.01632 | Simone Mastrogiovanni | S. Mastrogiovanni, D. Steer, M. Barsuglia | Probing modified gravity theories and cosmology using
gravitational-waves and associated electromagnetic counterparts | 19 pages, 13 Figs | Phys. Rev. D 102, 044009 (2020) | 10.1103/PhysRevD.102.044009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The direct detection of gravitational waves by the LIGO-Virgo collaboration
has opened a new window with which to measure cosmological parameters such as
the Hubble constant $H_0$, and also probe general relativity on large scales.
In this paper we present a new phenomenological approach, together with its
inferencia... | [
{
"created": "Fri, 3 Apr 2020 15:52:44 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Aug 2020 18:40:33 GMT",
"version": "v2"
}
] | 2020-08-14 | [
[
"Mastrogiovanni",
"S.",
""
],
[
"Steer",
"D.",
""
],
[
"Barsuglia",
"M.",
""
]
] | The direct detection of gravitational waves by the LIGO-Virgo collaboration has opened a new window with which to measure cosmological parameters such as the Hubble constant $H_0$, and also probe general relativity on large scales. In this paper we present a new phenomenological approach, together with its inferencial ... |
1108.3483 | Lorenzo Iorio | Lorenzo Iorio | Observational constraints on spatial anisotropy of G from orbital
motions | LaTex2e, 18 pages, no figures, 4 tables. Accepted by Classical and
Quantum Gravity (CQG). Typo fixed. Reference updated | Class. Quant. Gravit..28:225027,2011 | 10.1088/0264-9381/28/22/225027 | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A phenomenological anisotropic variation \Delta G/G of the Newtonian
gravitational coupling parameter G, if real, would affect the orbital dynamics
of a two-body gravitationally bound system in a specific way. We analytically
work out the long-term effects that such a putative modification of the usual
Newtonian inve... | [
{
"created": "Wed, 17 Aug 2011 14:12:35 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Oct 2011 17:52:23 GMT",
"version": "v2"
},
{
"created": "Tue, 25 Oct 2011 12:49:35 GMT",
"version": "v3"
}
] | 2011-11-02 | [
[
"Iorio",
"Lorenzo",
""
]
] | A phenomenological anisotropic variation \Delta G/G of the Newtonian gravitational coupling parameter G, if real, would affect the orbital dynamics of a two-body gravitationally bound system in a specific way. We analytically work out the long-term effects that such a putative modification of the usual Newtonian invers... |
gr-qc/0611067 | Alejandro Satz | Alejandro Satz | Then again, how often does the Unruh-DeWitt detector click if we switch
it carefully? | 16 pages, v3. Final published version with section 5 expanded | Class.Quant.Grav.24:1719-1732,2007 | 10.1088/0264-9381/24/7/003 | null | gr-qc hep-th | null | The transition probability in first-order perturbation theory for an
Unruh-DeWitt detector coupled to a massless scalar field in Minkowski space is
calculated. It has been shown recently that the conventional $i\epsilon$
regularisation prescription for the correlation function leads to non-Lorentz
invariant results f... | [
{
"created": "Mon, 13 Nov 2006 12:23:55 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Nov 2006 15:21:14 GMT",
"version": "v2"
},
{
"created": "Fri, 20 Apr 2007 16:03:59 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Satz",
"Alejandro",
""
]
] | The transition probability in first-order perturbation theory for an Unruh-DeWitt detector coupled to a massless scalar field in Minkowski space is calculated. It has been shown recently that the conventional $i\epsilon$ regularisation prescription for the correlation function leads to non-Lorentz invariant results for... |
2402.02825 | Tian-Yu Zhao | Tianyu Zhao, Yue Zhou, Ruijun Shi, Zhoujian Cao, Zhixiang Ren | GWAI: Harnessing Artificial Intelligence for Enhancing Gravitational
Wave Data Analysis | 10 pages, 5 figures | null | null | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave (GW) astronomy has opened new frontiers in understanding
the cosmos, while the integration of artificial intelligence (AI) in science
promises to revolutionize data analysis methodologies. However, a significant
gap exists, as there is currently no dedicated platform that enables scientists
to deve... | [
{
"created": "Mon, 5 Feb 2024 09:15:53 GMT",
"version": "v1"
}
] | 2024-02-06 | [
[
"Zhao",
"Tianyu",
""
],
[
"Zhou",
"Yue",
""
],
[
"Shi",
"Ruijun",
""
],
[
"Cao",
"Zhoujian",
""
],
[
"Ren",
"Zhixiang",
""
]
] | Gravitational wave (GW) astronomy has opened new frontiers in understanding the cosmos, while the integration of artificial intelligence (AI) in science promises to revolutionize data analysis methodologies. However, a significant gap exists, as there is currently no dedicated platform that enables scientists to develo... |
0911.3097 | Carlo Rovelli | Carlo Rovelli and Francesca Vidotto | On the spinfoam expansion in cosmology | 6 pages (typos corrected) | Class.Quant.Grav.27:145005,2010 | 10.1088/0264-9381/27/14/145005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the technique introduced in a recent work by Ashtekar, Campiglia
and Henderson, which generate a spinfoam-like sum from a Hamiltonian theory. We
study the possibility of using it for finding the generalized projector of a
constraint on physical states, without first deparametrising the system. We
illustra... | [
{
"created": "Mon, 16 Nov 2009 17:48:39 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Feb 2010 19:17:28 GMT",
"version": "v2"
}
] | 2011-10-18 | [
[
"Rovelli",
"Carlo",
""
],
[
"Vidotto",
"Francesca",
""
]
] | We consider the technique introduced in a recent work by Ashtekar, Campiglia and Henderson, which generate a spinfoam-like sum from a Hamiltonian theory. We study the possibility of using it for finding the generalized projector of a constraint on physical states, without first deparametrising the system. We illustrate... |
2204.01718 | Vlatko Vedral | Vlatko Vedral | Are There Any Real Problems With Quantum Gravity? | 8 pages, no figures | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a short, general and accessible introduction to quantizing gravity
in the Heisenberg picture. We then apply this formalism to the scenario where
two spatially superposed masses interact through the gravitational field. We
discuss some of the consequences for quantum gravity including the spin of the
gravit... | [
{
"created": "Sun, 3 Apr 2022 11:37:30 GMT",
"version": "v1"
}
] | 2022-04-06 | [
[
"Vedral",
"Vlatko",
""
]
] | We present a short, general and accessible introduction to quantizing gravity in the Heisenberg picture. We then apply this formalism to the scenario where two spatially superposed masses interact through the gravitational field. We discuss some of the consequences for quantum gravity including the spin of the graviton... |
2311.05502 | Zeeshan Gul | M. Zeeshan Gul and M. Sharif | Study of Viable Charged Wormhole Solutions in $f(R,G)$ Theory | 27 pages, 4 figures | New Astron. 106(2024)102137 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate how charge and modified terms affect the
viability and stability of traversable wormhole geometry in the framework of
$f(R,G)$ theory, where $R$ is the Ricci scalar and $G$ is the Gauss-Bonnet
term. For this purpose, we develop a shape function through the Karmarkar
condition to examine ... | [
{
"created": "Thu, 2 Nov 2023 03:18:11 GMT",
"version": "v1"
}
] | 2023-11-10 | [
[
"Gul",
"M. Zeeshan",
""
],
[
"Sharif",
"M.",
""
]
] | In this paper, we investigate how charge and modified terms affect the viability and stability of traversable wormhole geometry in the framework of $f(R,G)$ theory, where $R$ is the Ricci scalar and $G$ is the Gauss-Bonnet term. For this purpose, we develop a shape function through the Karmarkar condition to examine th... |
1011.4012 | Kerson Huang | Kerson Huang, Hwee-Boon Low, Roh-Suan Tung | Cosmology of an asymptotically free scalar field with spontaneous
symmetry breaking | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We solve Einstein's equation with Robertson-Walker metric as an initial-value
problem, using as the source of gravity a Halpern-Huang real scalar field,
which was derived from renormalization-group analysis, with a potential that
exhibits asymptotic freedom and spontaneous symmetry breaking. Both properties
are cruci... | [
{
"created": "Wed, 17 Nov 2010 18:12:19 GMT",
"version": "v1"
}
] | 2010-11-18 | [
[
"Huang",
"Kerson",
""
],
[
"Low",
"Hwee-Boon",
""
],
[
"Tung",
"Roh-Suan",
""
]
] | We solve Einstein's equation with Robertson-Walker metric as an initial-value problem, using as the source of gravity a Halpern-Huang real scalar field, which was derived from renormalization-group analysis, with a potential that exhibits asymptotic freedom and spontaneous symmetry breaking. Both properties are crucial... |
1408.0862 | Alexei Zayats | Alexander B. Balakin, Alexei E. Zayats | Dark energy fingerprints in the nonminimal Wu-Yang wormhole structure | 11 pages, 2 figures, accepted for publication in Phys. Rev. D | Phys. Rev. D 90, 044049 (2014) | 10.1103/PhysRevD.90.044049 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss new exact solutions to nonminimally extended Einstein-Yang-Mills
equations describing spherically symmetric static wormholes supported by the
gauge field of the Wu-Yang type in a dark energy environment. We focus on the
analysis of three types of exact solutions to the gravitational field
equations. Soluti... | [
{
"created": "Tue, 5 Aug 2014 04:48:11 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Aug 2014 07:29:56 GMT",
"version": "v2"
}
] | 2014-08-22 | [
[
"Balakin",
"Alexander B.",
""
],
[
"Zayats",
"Alexei E.",
""
]
] | We discuss new exact solutions to nonminimally extended Einstein-Yang-Mills equations describing spherically symmetric static wormholes supported by the gauge field of the Wu-Yang type in a dark energy environment. We focus on the analysis of three types of exact solutions to the gravitational field equations. Solution... |
gr-qc/9612068 | Renate Loll | R. Loll (AEI, Potsdam and ESI, Vienna) | Further results on geometric operators in quantum gravity | 24 pages, TeX, 3 figures (epsf) | Class.Quant.Grav. 14 (1997) 1725-1741 | 10.1088/0264-9381/14/7/010 | null | gr-qc hep-th | null | We investigate some properties of geometric operators in canonical quantum
gravity in the connection approach \`a la Ashtekar, which are associated with
volume, area and length of spatial regions. We motivate the construction of
analogous discretized lattice quantities, compute various quantum commutators
of the type... | [
{
"created": "Tue, 31 Dec 1996 16:47:12 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Loll",
"R.",
"",
"AEI, Potsdam and ESI, Vienna"
]
] | We investigate some properties of geometric operators in canonical quantum gravity in the connection approach \`a la Ashtekar, which are associated with volume, area and length of spatial regions. We motivate the construction of analogous discretized lattice quantities, compute various quantum commutators of the type [... |
gr-qc/0507069 | Muhammad Sharif | M. Sharif and Tasnim Fatima | Energy-Momentum Distribution in Weyl Metrics | 12 pages, accepted for publication in Nuovo Cimento B | Nuovo Cim. B120 (2005) 533-540 | 10.1393/ncb/i2005-10062-y | null | gr-qc | null | In this paper, we evaluate energy and momentum density distributions for the
Weyl metric by using the well-known prescriptions of Einstein, Landau-Lifshitz,
Papaterou and M$\ddot{o}$ller. The metric under consideration is the static
axisymmetric vacuum solution to the Einstein field equations and one of the
field equ... | [
{
"created": "Sat, 16 Jul 2005 03:55:43 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Sharif",
"M.",
""
],
[
"Fatima",
"Tasnim",
""
]
] | In this paper, we evaluate energy and momentum density distributions for the Weyl metric by using the well-known prescriptions of Einstein, Landau-Lifshitz, Papaterou and M$\ddot{o}$ller. The metric under consideration is the static axisymmetric vacuum solution to the Einstein field equations and one of the field equat... |
1310.1365 | Stefanos Aretakis | Stefanos Aretakis | The characteristic gluing problem and conservation laws for the wave
equation on null hypersurfaces | 58 pages, 19 figures | Annals of PDE 3 (2017) | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain necessary and sufficient conditions for the existence of
"conservation laws" on null hypersurfaces for the wave equation on general
four-dimensional Lorentzian manifolds. Examples of null hypersurfaces
exhibiting such conservation laws include the standard null cones of Minkowski
spacetime and the degenerat... | [
{
"created": "Fri, 4 Oct 2013 18:36:41 GMT",
"version": "v1"
}
] | 2021-02-26 | [
[
"Aretakis",
"Stefanos",
""
]
] | We obtain necessary and sufficient conditions for the existence of "conservation laws" on null hypersurfaces for the wave equation on general four-dimensional Lorentzian manifolds. Examples of null hypersurfaces exhibiting such conservation laws include the standard null cones of Minkowski spacetime and the degenerate ... |
gr-qc/0606090 | Felix Reszewski | Klaus Fredenhagen and Felix Reszewski | Polymer state approximations of Schroedinger wave functions | 11 pages, 1 figure, Conclusions section added | Class.Quant.Grav. 23 (2006) 6577-6584 | 10.1088/0264-9381/23/22/028 | null | gr-qc | null | It is shown how states of a quantum mechanical particle in the Schroedinger
representation can be approximated by states in the so-called polymer
representation. The result may shed some light on the semiclassical limit of
loop quantum gravity.
| [
{
"created": "Wed, 21 Jun 2006 14:33:57 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Aug 2006 15:38:09 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Fredenhagen",
"Klaus",
""
],
[
"Reszewski",
"Felix",
""
]
] | It is shown how states of a quantum mechanical particle in the Schroedinger representation can be approximated by states in the so-called polymer representation. The result may shed some light on the semiclassical limit of loop quantum gravity. |
0707.3558 | Hamid Reza Sepangi | M. Heydari-Fard, H. Razmi and H. R. Sepangi | Brane-World Black Hole Solutions via a Confining Potential | 12 pages, to appear in PRD | Phys.Rev.D76:066002,2007 | 10.1103/PhysRevD.76.066002 | null | gr-qc hep-th | null | Using a confining potential, we consider spherically symmetric vacuum (static
black hole) solutions in a brane-world scenario. Working with a constant
curvature bulk, two interesting cases/solutions are studied. A Schwarzschild-de
Sitter black hole solution similar to the standard solution in the presence of
a cosmol... | [
{
"created": "Tue, 24 Jul 2007 14:41:10 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Jul 2007 09:58:20 GMT",
"version": "v2"
},
{
"created": "Tue, 11 Sep 2007 12:44:36 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Heydari-Fard",
"M.",
""
],
[
"Razmi",
"H.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | Using a confining potential, we consider spherically symmetric vacuum (static black hole) solutions in a brane-world scenario. Working with a constant curvature bulk, two interesting cases/solutions are studied. A Schwarzschild-de Sitter black hole solution similar to the standard solution in the presence of a cosmolog... |
1808.05171 | Angel Rincon | Grigoris Panotopoulos and Angel Rincon | Charged slowly rotating toroidal black holes in the (1+3)-dimensional
Einstein-power-Maxwell theory | v3: References added | null | 10.1142/S0218271819500160 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we find charged slowly rotating solutions in the
four-dimensional Einstein-power-Maxwell non-linear electrodynamics assuming a
negative cosmological constant. By solving the system of coupled field
equations explicitly we obtain an approximate analytical solution in the small
rotation limit. The solution... | [
{
"created": "Wed, 15 Aug 2018 16:17:11 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Aug 2018 16:11:42 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Sep 2018 06:12:34 GMT",
"version": "v3"
}
] | 2018-09-05 | [
[
"Panotopoulos",
"Grigoris",
""
],
[
"Rincon",
"Angel",
""
]
] | In this work we find charged slowly rotating solutions in the four-dimensional Einstein-power-Maxwell non-linear electrodynamics assuming a negative cosmological constant. By solving the system of coupled field equations explicitly we obtain an approximate analytical solution in the small rotation limit. The solution o... |
2003.08023 | Ian Morrison | Garrett Compton and Ian A. Morrison | Hidden symmetries for transparent de Sitter space | 17 pp | null | 10.1088/1361-6382/ab8c98 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that odd-dimensional de Sitter space acts as a transparent
potential for free fields. Previous studies have explained this phenomena by
relating de Sitter free field equations of motion to the time-independent
Schrodinger equation with known transparent potentials. In this work we show
that de Sitter's tr... | [
{
"created": "Wed, 18 Mar 2020 02:52:49 GMT",
"version": "v1"
}
] | 2020-06-17 | [
[
"Compton",
"Garrett",
""
],
[
"Morrison",
"Ian A.",
""
]
] | It is known that odd-dimensional de Sitter space acts as a transparent potential for free fields. Previous studies have explained this phenomena by relating de Sitter free field equations of motion to the time-independent Schrodinger equation with known transparent potentials. In this work we show that de Sitter's tran... |
2108.02588 | Tetsuya Shiromizu | Keisuke Izumi, Yoshimune Tomikawa, Tetsuya Shiromizu | On uniqueness of static spacetime with conformal scalar in higher
dimensions | 9 pages | null | 10.1103/PhysRevD.104.104025 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the uniqueness of asymptotically flat and static spacetimes in the
$n$-dimensional Einstein-conformal scalar system. This theory potentially has a
singular point in the field equations where the effective Newton constant
diverges. We will show that the static spacetime with the conformal scalar
field outsi... | [
{
"created": "Thu, 5 Aug 2021 12:56:16 GMT",
"version": "v1"
}
] | 2021-11-24 | [
[
"Izumi",
"Keisuke",
""
],
[
"Tomikawa",
"Yoshimune",
""
],
[
"Shiromizu",
"Tetsuya",
""
]
] | We discuss the uniqueness of asymptotically flat and static spacetimes in the $n$-dimensional Einstein-conformal scalar system. This theory potentially has a singular point in the field equations where the effective Newton constant diverges. We will show that the static spacetime with the conformal scalar field outside... |
gr-qc/0505158 | Claus Kiefer | Claus Kiefer, Tobias Lueck, Paulo Moniz | Semiclassical approximation to supersymmetric quantum gravity | 34 pages, clarifications added, typos corrected | Phys.Rev. D72 (2005) 045006 | 10.1103/PhysRevD.72.045006 | null | gr-qc hep-th | null | We develop a semiclassical approximation scheme for the constraint equations
of supersymmetric canonical quantum gravity. This is achieved by a
Born-Oppenheimer type of expansion, in analogy to the case of the usual
Wheeler-DeWitt equation. The formalism is only consistent if the states at each
order depend on the gr... | [
{
"created": "Tue, 31 May 2005 12:52:23 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Aug 2005 16:20:03 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Kiefer",
"Claus",
""
],
[
"Lueck",
"Tobias",
""
],
[
"Moniz",
"Paulo",
""
]
] | We develop a semiclassical approximation scheme for the constraint equations of supersymmetric canonical quantum gravity. This is achieved by a Born-Oppenheimer type of expansion, in analogy to the case of the usual Wheeler-DeWitt equation. The formalism is only consistent if the states at each order depend on the grav... |
1108.4111 | Sunil Maharaj | S. Moopanar, S. D. Maharaj | Conformal symmetries of spherical spacetimes | 8 pages, To appear in Int. J. Theor. Phys | null | 10.1142/9789812834300_0380 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the conformal geometry of spherically symmetric spacetimes in
general without specifying the form of the matter distribution. The general
conformal Killing symmetry is obtained subject to a number of integrability
conditions. Previous results relating to static spacetimes are shown to be a
special case... | [
{
"created": "Sat, 20 Aug 2011 11:27:14 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Moopanar",
"S.",
""
],
[
"Maharaj",
"S. D.",
""
]
] | We investigate the conformal geometry of spherically symmetric spacetimes in general without specifying the form of the matter distribution. The general conformal Killing symmetry is obtained subject to a number of integrability conditions. Previous results relating to static spacetimes are shown to be a special case o... |
2112.12265 | Barry Wardell | Barry Wardell, Adam Pound, Niels Warburton, Jeremy Miller, Leanne
Durkan, Alexandre Le Tiec | Gravitational waveforms for compact binaries from second-order
self-force theory | null | null | 10.1103/PhysRevLett.130.241402 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We produce gravitational waveforms for nonspinning compact binaries
undergoing a quasicircular inspiral. Our approach is based on a two-timescale
expansion of the Einstein equations in second-order self-force theory, which
allows first-principles waveform production in tens of milliseconds. Although
the approach is d... | [
{
"created": "Wed, 22 Dec 2021 23:09:31 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Mar 2023 15:24:30 GMT",
"version": "v2"
}
] | 2023-08-16 | [
[
"Wardell",
"Barry",
""
],
[
"Pound",
"Adam",
""
],
[
"Warburton",
"Niels",
""
],
[
"Miller",
"Jeremy",
""
],
[
"Durkan",
"Leanne",
""
],
[
"Tiec",
"Alexandre Le",
""
]
] | We produce gravitational waveforms for nonspinning compact binaries undergoing a quasicircular inspiral. Our approach is based on a two-timescale expansion of the Einstein equations in second-order self-force theory, which allows first-principles waveform production in tens of milliseconds. Although the approach is des... |
1906.10323 | Xiang-Hua Zhai | Rui-Hui Lin, Zhen-Yuan Wu and Xiang-Hua Zhai | Wormholes without exotic matter in nonminimal torsion-matter coupling
$f(T)$ gravity | 6 pages,4 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Wormholes are hypothetical tunnels that connect remote parts of spacetime. In
General Relativity, wormholes are threaded by exotic matter that violates the
energy conditions. In this work, we consider wormholes threaded by nonexotic
matter in nonminimal torsion-matter coupling $f(T)$ gravity. We find that the
nonmini... | [
{
"created": "Tue, 25 Jun 2019 05:16:00 GMT",
"version": "v1"
}
] | 2019-06-26 | [
[
"Lin",
"Rui-Hui",
""
],
[
"Wu",
"Zhen-Yuan",
""
],
[
"Zhai",
"Xiang-Hua",
""
]
] | Wormholes are hypothetical tunnels that connect remote parts of spacetime. In General Relativity, wormholes are threaded by exotic matter that violates the energy conditions. In this work, we consider wormholes threaded by nonexotic matter in nonminimal torsion-matter coupling $f(T)$ gravity. We find that the nonminima... |
1009.6198 | Sandro Marcio Rodrigues Micheletti | Sandro M. R. Micheletti | Holographic field theory models of dark energy in interaction with dark
matter | arXiv admin note: substantial text overlap with arXiv:0912.3992 | null | 10.1103/PhysRevD.85.123536 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss two lagrangian interacting dark energy models in the context of
the holographic principle. The potentials of the interacting fields are
constructed. The models are compared with CMB distance information, baryonic
acoustic oscilations, lookback time and the Constitution supernovae sample. For
both models th... | [
{
"created": "Thu, 30 Sep 2010 17:16:19 GMT",
"version": "v1"
},
{
"created": "Sun, 3 Oct 2010 12:11:37 GMT",
"version": "v2"
},
{
"created": "Mon, 3 Oct 2011 15:40:36 GMT",
"version": "v3"
},
{
"created": "Fri, 7 Oct 2011 01:50:31 GMT",
"version": "v4"
}
] | 2013-05-30 | [
[
"Micheletti",
"Sandro M. R.",
""
]
] | We discuss two lagrangian interacting dark energy models in the context of the holographic principle. The potentials of the interacting fields are constructed. The models are compared with CMB distance information, baryonic acoustic oscilations, lookback time and the Constitution supernovae sample. For both models the ... |
2401.00234 | David Garfinkle | Lydia Bieri and David Garfinkle | An experiment to measure electromagnetic memory | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe an experiment to measure the electromagnetic analog of
gravitational wave memory, the so-called electromagnetic memory. Whereas
gravitational wave memory is a residual displacement of test masses,
electromagnetic memory is a residual velocity (i.e. kick) of test charges.
The source of gravitational wave... | [
{
"created": "Sat, 30 Dec 2023 13:51:28 GMT",
"version": "v1"
}
] | 2024-01-02 | [
[
"Bieri",
"Lydia",
""
],
[
"Garfinkle",
"David",
""
]
] | We describe an experiment to measure the electromagnetic analog of gravitational wave memory, the so-called electromagnetic memory. Whereas gravitational wave memory is a residual displacement of test masses, electromagnetic memory is a residual velocity (i.e. kick) of test charges. The source of gravitational wave mem... |
1605.00066 | Hang Liu | Hang Liu and Xin-he Meng | Angular Momentum Independence of the Entropy Sum and Entropy Product for
AdS Rotating Black Holes In All Dimensions | 14 pages, 0 figures,accepted for publication in Physics Letters B | Physics Letters B 759(2016)253-259 | 10.1016/j.physletb.2016.05.084 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the angular momentum independence of the
entropy sum and product for AdS rotating black holes based on the first law of
thermodynamics and a mathematical lemma related to Vandermonde determinant. The
advantage of this method is that the explicit forms of the spacetime metric,
black hole ... | [
{
"created": "Sat, 30 Apr 2016 06:40:47 GMT",
"version": "v1"
},
{
"created": "Tue, 31 May 2016 04:28:14 GMT",
"version": "v2"
}
] | 2016-06-07 | [
[
"Liu",
"Hang",
""
],
[
"Meng",
"Xin-he",
""
]
] | In this paper, we investigate the angular momentum independence of the entropy sum and product for AdS rotating black holes based on the first law of thermodynamics and a mathematical lemma related to Vandermonde determinant. The advantage of this method is that the explicit forms of the spacetime metric, black hole ma... |
1811.12585 | Jefferson Toledo | Marco M. Dias e Costa, J. M. Toledo, V. B. Bezerra | On the Letelier spacetime with quintessence: solution, thermodynamics
and Hawking radiation | null | null | 10.1142/S0218271819500743 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain the solution corresponding to a static and spherically symmetric
black hole with a cloud of strings (Letelier spacetime) immersed in a
quintessential fluid. We discuss some aspects of its thermodynamics. We also
present a discussion about Hawking radiation of particles, in the background
under consideration... | [
{
"created": "Fri, 30 Nov 2018 02:34:55 GMT",
"version": "v1"
}
] | 2019-03-08 | [
[
"Costa",
"Marco M. Dias e",
""
],
[
"Toledo",
"J. M.",
""
],
[
"Bezerra",
"V. B.",
""
]
] | We obtain the solution corresponding to a static and spherically symmetric black hole with a cloud of strings (Letelier spacetime) immersed in a quintessential fluid. We discuss some aspects of its thermodynamics. We also present a discussion about Hawking radiation of particles, in the background under consideration. |
gr-qc/0503074 | Joachim Moortgat | Joachim Moortgat, Jan Kuijpers | Indirect Visibility of Gravitational Waves in Magnetohydrodynamic
Plasmas | 6 pages; 8 eps figures; Proceedings of the XXII Texas Symposium on
Relativistic Astrophysics, Stanford University, Palo Alto, USA, December
13-17 2004. PSN 1230 | null | null | null | gr-qc astro-ph | null | We propose a mechanism to make gravitational waves (GWs) visible in the
electromagnetic domain. Gravitational waves that propagate through a strongly
magnetized plasma interact with the plasma through its anisotropic
stress-energy tensor and excite magnetohydrodynamic (MHD) wave modes. In
catastrophic events such as ... | [
{
"created": "Thu, 17 Mar 2005 13:37:05 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Moortgat",
"Joachim",
""
],
[
"Kuijpers",
"Jan",
""
]
] | We propose a mechanism to make gravitational waves (GWs) visible in the electromagnetic domain. Gravitational waves that propagate through a strongly magnetized plasma interact with the plasma through its anisotropic stress-energy tensor and excite magnetohydrodynamic (MHD) wave modes. In catastrophic events such as th... |
gr-qc/0110040 | Carlo Rovelli | Carlo Rovelli | GR16: Quantum General Relativity | 7 pages, no figures | null | 10.1142/9789812776556_0033 | null | gr-qc | null | This is the report of the "Quantum General Relativity" session, at the 16th
International Conference on General Relativity & Gravitation, held on July 15th
to 21st 2001, in Durban, South Africa. The report will appear on the
Proceedings of the conference. Comments and criticisms are welcome: they will
be taken into a... | [
{
"created": "Mon, 8 Oct 2001 16:20:00 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Rovelli",
"Carlo",
""
]
] | This is the report of the "Quantum General Relativity" session, at the 16th International Conference on General Relativity & Gravitation, held on July 15th to 21st 2001, in Durban, South Africa. The report will appear on the Proceedings of the conference. Comments and criticisms are welcome: they will be taken into acc... |
1310.1699 | Henrique de Andrade Gomes | Henrique Gomes | Conformal geometrodynamics regained: gravity from duality | 15 pages, 1 figure. Stronger results than previous version | Annals of Physics, Vol. 355, April 2015, pp 224 - 240 | 10.1016/j.aop.2015.02.017 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There exist several ways of constructing general relativity from `first
principles': Einstein's original derivation, Lovelock's results concerning the
exceptional nature of the Einstein tensor from a mathematical perspective, and
Hojman-Kucha\v{r}-Teitelboim's derivation of the Hamiltonian form of the theory
from the... | [
{
"created": "Mon, 7 Oct 2013 08:10:10 GMT",
"version": "v1"
},
{
"created": "Sat, 19 Oct 2013 02:48:05 GMT",
"version": "v2"
},
{
"created": "Sat, 6 Sep 2014 19:36:47 GMT",
"version": "v3"
}
] | 2017-09-19 | [
[
"Gomes",
"Henrique",
""
]
] | There exist several ways of constructing general relativity from `first principles': Einstein's original derivation, Lovelock's results concerning the exceptional nature of the Einstein tensor from a mathematical perspective, and Hojman-Kucha\v{r}-Teitelboim's derivation of the Hamiltonian form of the theory from the s... |
gr-qc/0302079 | P. S. Custodio | P.S. Cust\'odio and J.E. Horvath | Thermodynamics of black holes in finite boxes | RevTex file, 2 .ps figures. Submitted to AmJPhys | Am.J.Phys. 71 (2003) 1237-1241 | 10.1119/1.1590656 | null | gr-qc | null | We analyze the thermodynamical behavior of black holes in closed finite
boxes. First the black hole mass evolution is analyzed in an initially empty
box. Using the conservation of the energy and the Hawking evaporation flux, we
deduce a minimal volume above which one black hole can loss all of its mass to
the box, a ... | [
{
"created": "Wed, 19 Feb 2003 19:45:02 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Custódio",
"P. S.",
""
],
[
"Horvath",
"J. E.",
""
]
] | We analyze the thermodynamical behavior of black holes in closed finite boxes. First the black hole mass evolution is analyzed in an initially empty box. Using the conservation of the energy and the Hawking evaporation flux, we deduce a minimal volume above which one black hole can loss all of its mass to the box, a re... |
2401.05941 | Aneta Wojnar | Ahmed Farag Ali and Aneta Wojnar | A covariant tapestry of linear GUP, metric-affine gravity, their
Poincar\'e algebra and entropy bound | 10 pages, 1 figure, to appear in CQG | Class. Quantum Grav. 41 (2024) 105001 | 10.1088/1361-6382/ad3ac7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the potential connection between metric-affine gravity and
linear Generalized Uncertainty Principle (GUP) in the phase space, we develop a
covariant form of linear GUP and an associated modified Poincar\'e algebra,
which exhibits distinctive behavior, nearing nullity at the minimal length
scale proposed ... | [
{
"created": "Thu, 11 Jan 2024 14:27:43 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Jan 2024 14:22:28 GMT",
"version": "v2"
},
{
"created": "Fri, 5 Apr 2024 07:27:35 GMT",
"version": "v3"
}
] | 2024-04-15 | [
[
"Ali",
"Ahmed Farag",
""
],
[
"Wojnar",
"Aneta",
""
]
] | Motivated by the potential connection between metric-affine gravity and linear Generalized Uncertainty Principle (GUP) in the phase space, we develop a covariant form of linear GUP and an associated modified Poincar\'e algebra, which exhibits distinctive behavior, nearing nullity at the minimal length scale proposed by... |
1710.02032 | Nikolaos Dimakis | A. Karagiorgos, T. Pailas, N. Dimakis, Petros A. Terzis and T.
Christodoulakis | Quantum cosmology of a Bianchi III LRS geometry coupled to a source free
electromagnetic field | Latex2e file, 26 pages, no figures | null | 10.1088/1475-7516/2018/03/030 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a Bianchi type III axisymmetric geometry in the presence of an
electromagnetic field. A first result at the classical level is that the
symmetry of the geometry need not be applied on the electromagnetic tensor
$F_{\mu\nu}$; the algebraic restrictions, implied by the Einstein field
equations to the stress... | [
{
"created": "Thu, 5 Oct 2017 14:06:06 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Jan 2018 10:47:10 GMT",
"version": "v2"
}
] | 2018-04-04 | [
[
"Karagiorgos",
"A.",
""
],
[
"Pailas",
"T.",
""
],
[
"Dimakis",
"N.",
""
],
[
"Terzis",
"Petros A.",
""
],
[
"Christodoulakis",
"T.",
""
]
] | We consider a Bianchi type III axisymmetric geometry in the presence of an electromagnetic field. A first result at the classical level is that the symmetry of the geometry need not be applied on the electromagnetic tensor $F_{\mu\nu}$; the algebraic restrictions, implied by the Einstein field equations to the stress e... |
gr-qc/9506008 | null | G. Esposito, C. Stornaiolo, G. Gionti | Spacetime Covariant Form of Ashtekar's Constraints | 22 pages, plain Tex, no figures, accepted for publication in Nuovo
Cimento B | Nuovo Cim.B110:1137-1152,1995 | 10.1007/BF02724605 | DSF preprint 95/7 | gr-qc | null | The Lagrangian formulation of classical field theories and in particular
general relativity leads to a coordinate-free, fully covariant analysis of
these constrained systems. This paper applies multisymplectic techniques to
obtain the analysis of Palatini and self-dual gravity theories as constrained
systems, which h... | [
{
"created": "Mon, 5 Jun 1995 17:02:57 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Esposito",
"G.",
""
],
[
"Stornaiolo",
"C.",
""
],
[
"Gionti",
"G.",
""
]
] | The Lagrangian formulation of classical field theories and in particular general relativity leads to a coordinate-free, fully covariant analysis of these constrained systems. This paper applies multisymplectic techniques to obtain the analysis of Palatini and self-dual gravity theories as constrained systems, which hav... |
2309.01338 | Kiyoshi Shiraishi | Nahomi Kan, Kiyoshi Shiraishi | Electric and dilatonic fields of a charged massive particle at rest in
the field of a charged dilaton black hole | 23 pages, 1 figure. final version | Eur. Phys. J. C 84 (2024) 3, 275 | 10.1140/epjc/s10052-024-12633-9 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study linear-perturbation equations for the two-body system of a charged
dilaton black hole, of which dilaton coupling constant is $\alpha$, and a
static particle with mass $m$, electric charge $q$, and dilatonic charge $\beta
m$. We find that a consistent condition for the coupled equations corresponds
to the equ... | [
{
"created": "Mon, 4 Sep 2023 03:47:56 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Sep 2023 04:16:35 GMT",
"version": "v2"
},
{
"created": "Wed, 31 Jan 2024 03:52:24 GMT",
"version": "v3"
},
{
"created": "Wed, 20 Mar 2024 03:02:27 GMT",
"version": "v4"
}
] | 2024-03-21 | [
[
"Kan",
"Nahomi",
""
],
[
"Shiraishi",
"Kiyoshi",
""
]
] | We study linear-perturbation equations for the two-body system of a charged dilaton black hole, of which dilaton coupling constant is $\alpha$, and a static particle with mass $m$, electric charge $q$, and dilatonic charge $\beta m$. We find that a consistent condition for the coupled equations corresponds to the equil... |
1104.4853 | Lorenzo Iorio | Lorenzo Iorio | Orbital effects of a monochromatic plane gravitational wave with
ultra-low frequency incident on a gravitationally bound two-body system | LaTex2e, 24 pages, no figures, no tables. Changes suggested by the
referees included | ScienceOpen Research SOR-ASTRO, pp. 1-13, 2014 | 10.14293/S2199-1006.1.SOR-ASTRO.AWXWIL.v2 | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically compute the long-term orbital variations of a test particle
orbiting a central body acted upon by an incident monochromatic plane
gravitational wave. We assume that the characteristic size of the perturbed
two-body system is much smaller than the wavelength of the wave. Moreover, we
also suppose that ... | [
{
"created": "Tue, 26 Apr 2011 07:30:59 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Mar 2014 16:47:37 GMT",
"version": "v2"
},
{
"created": "Fri, 12 Sep 2014 10:30:27 GMT",
"version": "v3"
}
] | 2015-11-10 | [
[
"Iorio",
"Lorenzo",
""
]
] | We analytically compute the long-term orbital variations of a test particle orbiting a central body acted upon by an incident monochromatic plane gravitational wave. We assume that the characteristic size of the perturbed two-body system is much smaller than the wavelength of the wave. Moreover, we also suppose that th... |
1407.5405 | German Sharov | G. S. Sharov and E. G. Vorontsova | Parameters of cosmological models and recent astronomical observations | 18 pages, 4 figures | JCAP 10 (2014) 057 | 10.1088/1475-7516/2014/10/057 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For different gravitational models we consider limitations on their
parameters coming from recent observational data for type Ia supernovae, baryon
acoustic oscillations, and from 34 data points for the Hubble parameter $H(z)$
depending on redshift. We calculate parameters of 3 models describing
accelerated expansion... | [
{
"created": "Mon, 21 Jul 2014 07:59:19 GMT",
"version": "v1"
}
] | 2014-11-06 | [
[
"Sharov",
"G. S.",
""
],
[
"Vorontsova",
"E. G.",
""
]
] | For different gravitational models we consider limitations on their parameters coming from recent observational data for type Ia supernovae, baryon acoustic oscillations, and from 34 data points for the Hubble parameter $H(z)$ depending on redshift. We calculate parameters of 3 models describing accelerated expansion o... |
1703.10178 | Basem Mahmoud El-Menoufi | Basem Kamal El-Menoufi | Quantum gravity effects on the thermodynamic stability of 4D
Schwarzschild black hole | Accepted for publication in JHEP; 20 pages, 4 figures, few minor
typos corrected and references updated | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the Euclidean approach, we consider the effects of quantum gravity
and mass-less matter on the thermodynamic properties of Schwarzschild black
hole. The techniques of effective field theory are utilized to analytically
construct the partition function at the one-loop level. Using the non-local
heat kernel fo... | [
{
"created": "Wed, 29 Mar 2017 18:01:02 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Aug 2017 18:01:22 GMT",
"version": "v2"
}
] | 2017-08-11 | [
[
"El-Menoufi",
"Basem Kamal",
""
]
] | Based on the Euclidean approach, we consider the effects of quantum gravity and mass-less matter on the thermodynamic properties of Schwarzschild black hole. The techniques of effective field theory are utilized to analytically construct the partition function at the one-loop level. Using the non-local heat kernel form... |
2003.04106 | Marcelo Schiffer | Marcelo Schiffer | The Width Paradox and the Internal Structure of a Black-Hole | 9 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the early days of Black Hole Thermodynamics, Bekenstein calculated the
mass dispersion of a macroscopic black hole that results from the stochasticity
of the thermal radiation it emits -- it turned out to be negative for black
holes massive than $M \stackrel{>}{\sim} 10^{30}g$. He named it the {\it "mass
width par... | [
{
"created": "Mon, 9 Mar 2020 13:03:22 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Mar 2022 12:36:03 GMT",
"version": "v2"
}
] | 2022-03-08 | [
[
"Schiffer",
"Marcelo",
""
]
] | In the early days of Black Hole Thermodynamics, Bekenstein calculated the mass dispersion of a macroscopic black hole that results from the stochasticity of the thermal radiation it emits -- it turned out to be negative for black holes massive than $M \stackrel{>}{\sim} 10^{30}g$. He named it the {\it "mass width parad... |
2107.14225 | Jo\~ao Lu\'is Rosa | Jo\~ao Lu\'is Rosa | Double gravitational layer traversable wormholes in hybrid
metric-Palatini gravity | 10 pages, 1 figure | Phys. Rev. D 104, 064002 (2021) | 10.1103/PhysRevD.104.064002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we explore the existence of traversable wormhole solutions
supported by double gravitational layer thin-shells and satisfying the Null
Energy Condition (NEC) throughout the whole spacetime, in a quadratic-linear
form of the generalized hybrid metric-Palatini gravity. We start by showing
that for a parti... | [
{
"created": "Thu, 29 Jul 2021 17:57:20 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Sep 2021 17:42:21 GMT",
"version": "v2"
}
] | 2021-09-03 | [
[
"Rosa",
"João Luís",
""
]
] | In this work, we explore the existence of traversable wormhole solutions supported by double gravitational layer thin-shells and satisfying the Null Energy Condition (NEC) throughout the whole spacetime, in a quadratic-linear form of the generalized hybrid metric-Palatini gravity. We start by showing that for a particu... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.