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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2006.03359 | Jean-Philippe Uzan | Jean-Philippe Uzan, Martin Pernot-Borr\`as, Joel Berg\'e | Effects of a scalar fifth force on the dynamics of a charged particle as
a new experimental design to test chameleon theories | 16 pages, 21 figures | Phys. Rev. D 102, 044059 (2020) | 10.1103/PhysRevD.102.044059 | null | gr-qc astro-ph.CO hep-ph physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article describes the dynamics of a charge particle in a electromagnetic
field in presence of a scalar fifth force. Focusing to the fifth force that
would be induced by a chameleon field, the profile of which can be designed
properly in the laboratory, it draws its physical effects on the cyclotron
motion of a p... | [
{
"created": "Fri, 5 Jun 2020 10:45:53 GMT",
"version": "v1"
}
] | 2020-09-09 | [
[
"Uzan",
"Jean-Philippe",
""
],
[
"Pernot-Borràs",
"Martin",
""
],
[
"Bergé",
"Joel",
""
]
] | This article describes the dynamics of a charge particle in a electromagnetic field in presence of a scalar fifth force. Focusing to the fifth force that would be induced by a chameleon field, the profile of which can be designed properly in the laboratory, it draws its physical effects on the cyclotron motion of a par... |
1503.07802 | Marco Cariglia Dr | Marco Cariglia, Filipe Kelmer Alves | The Eisenhart lift: a didactical introduction of modern geometrical
concepts from Hamiltonian dynamics | 7 pages, no figures | Eur. J. Phys. 36 025018 2015 | 10.1088/0143-0807/36/2/025018 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work originates from part of a final year undergraduate research project
on the Eisenhart lift for Hamiltonian systems. The Eisenhart lift is a
procedure to describe trajectories of a classical natural Hamiltonian system as
geodesics in an enlarged space. We point out that it can be easily obtained
from basic pr... | [
{
"created": "Mon, 2 Mar 2015 14:17:55 GMT",
"version": "v1"
}
] | 2015-03-27 | [
[
"Cariglia",
"Marco",
""
],
[
"Alves",
"Filipe Kelmer",
""
]
] | This work originates from part of a final year undergraduate research project on the Eisenhart lift for Hamiltonian systems. The Eisenhart lift is a procedure to describe trajectories of a classical natural Hamiltonian system as geodesics in an enlarged space. We point out that it can be easily obtained from basic prin... |
1902.00564 | Emil M. Prodanov | Emil M. Prodanov | Evaporation Screening, Scattering, and Quantum Tunneling Near the
Horizons of Schwarzschild and Reissner--Nordstr\"om Black Holes | 17 pages, no figures | Class. Quantum Grav. 31 (2014) 105013 | 10.1088/0264-9381/31/10/105013 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For the radial motion of massive particles with large angular momenta in
Schwarzschild geometry and that of massive charged particles with large angular
momenta or energy in a particular range in Reissner--Nordstr\"om geometry,
there exist classically forbidden regions on the outside of the respective
event horizons ... | [
{
"created": "Fri, 1 Feb 2019 21:08:21 GMT",
"version": "v1"
}
] | 2019-02-05 | [
[
"Prodanov",
"Emil M.",
""
]
] | For the radial motion of massive particles with large angular momenta in Schwarzschild geometry and that of massive charged particles with large angular momenta or energy in a particular range in Reissner--Nordstr\"om geometry, there exist classically forbidden regions on the outside of the respective event horizons wh... |
1108.2408 | Jose Luis Jaramillo | Jos\'e Luis Jaramillo | An introduction to local Black Hole horizons in the 3+1 approach to
General Relativity | 37 pages, 5 figures. Notes prepared for the course at the 2011
Shanghai Asia-Pacific School and Workshop on Gravitation (Shanghai Normal
University, February 10-14, 2011) | null | 10.1142/S0218271811020366 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an introduction to dynamical trapping horizons as quasi-local
models for black hole horizons, from the perspective of an Initial Value
Problem approach to the construction of generic black hole spacetimes. We focus
on the geometric and structural properties of these horizons aiming, as a main
application, ... | [
{
"created": "Thu, 11 Aug 2011 14:12:01 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Jaramillo",
"José Luis",
""
]
] | We present an introduction to dynamical trapping horizons as quasi-local models for black hole horizons, from the perspective of an Initial Value Problem approach to the construction of generic black hole spacetimes. We focus on the geometric and structural properties of these horizons aiming, as a main application, at... |
1812.01014 | Shahar Hod | Shahar Hod | The Reissner-Nordstr\"om black hole with the fastest relaxation rate | 5 pages | The European Physical Journal C 78, 935 (2018) | 10.1140/epjc/s10052-018-6422-8 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Numerous {\it numerical} investigations of the quasinormal resonant spectra
of Kerr-Newman black holes have revealed the interesting fact that the
characteristic relaxation times $\tau({\bar a},{\bar Q})$ of these canonical
black-hole spacetimes can be described by a two-dimensional function ${\bar
\tau}\equiv \tau/M... | [
{
"created": "Mon, 3 Dec 2018 19:00:02 GMT",
"version": "v1"
}
] | 2018-12-12 | [
[
"Hod",
"Shahar",
""
]
] | Numerous {\it numerical} investigations of the quasinormal resonant spectra of Kerr-Newman black holes have revealed the interesting fact that the characteristic relaxation times $\tau({\bar a},{\bar Q})$ of these canonical black-hole spacetimes can be described by a two-dimensional function ${\bar \tau}\equiv \tau/M$ ... |
1101.0748 | Jos\'e Villanueva PhD | M. Olivares, J. Saavedra, C. Leiva, J.R. Villanueva | Motion of charged particles on the Reissner-Nordstr\"om (Anti)-de Sitter
black holes | 21 pages, 10 figures | Mod. Phys. Lett. A, Vol. 26, No. 39 (2011) pp. 2923-2950 | 10.1142/S0217732311037261 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we address the study of movement of charged particles in the
background of charged black holes with non-trivial asymptotic behavior. We
compute the exact trajectories for massive-charged particles in term of
elliptic Jacobi function. Finally we obtain a detailed description of orbits
for Reissner-Nordstr... | [
{
"created": "Tue, 4 Jan 2011 15:56:07 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Feb 2011 01:38:10 GMT",
"version": "v2"
}
] | 2015-05-20 | [
[
"Olivares",
"M.",
""
],
[
"Saavedra",
"J.",
""
],
[
"Leiva",
"C.",
""
],
[
"Villanueva",
"J. R.",
""
]
] | In this work we address the study of movement of charged particles in the background of charged black holes with non-trivial asymptotic behavior. We compute the exact trajectories for massive-charged particles in term of elliptic Jacobi function. Finally we obtain a detailed description of orbits for Reissner-Nordstr\"... |
1307.4632 | Luca Fabbri | Luca Fabbri | Least-Order Torsion-Gravity for Chiral-Spinor Fields, induced
Self-Interacting Potentials and Parity Conservation | 7 pages | Gen.Rel.Grav.46:1663(2014) | 10.1007/s10714-013-1663-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We will consider the most general least-order derivative action for the
torsional completion of gravitational backgrounds filled with left-handed and
right-handed semi-spinorial fields, accounting for all parity-even as well as
parity-odd contributions; we will proceed by performing the customary analysis,
decomposin... | [
{
"created": "Wed, 17 Jul 2013 13:54:14 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Jan 2014 18:07:03 GMT",
"version": "v2"
},
{
"created": "Mon, 17 Nov 2014 14:39:00 GMT",
"version": "v3"
},
{
"created": "Wed, 10 Dec 2014 15:50:12 GMT",
"version": "v4"
}
] | 2014-12-11 | [
[
"Fabbri",
"Luca",
""
]
] | We will consider the most general least-order derivative action for the torsional completion of gravitational backgrounds filled with left-handed and right-handed semi-spinorial fields, accounting for all parity-even as well as parity-odd contributions; we will proceed by performing the customary analysis, decomposing ... |
1512.07779 | Kourosh Nozari | K. Nozari, M. Khodadi and M. A. Gorji | Bounds on quantum gravity parameter from the $SU(2)$ NJL effective model
of QCD | 10 pages, no figure, accepted for publication in Europhysics Letters | EPL 112 (2015) 60003 | 10.1209/0295-5075/112/60003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Existence of a minimal measurable length, as an effective cutoff in the
ultraviolet regime, is a common feature of all approaches to the quantum
gravity proposal. It is widely believed that this length scale will be of the
order of the Planck length $\lambda=\lambda_0\,l_{_{\rm Pl}}$, where
$\lambda_0\sim{\mathcal O}... | [
{
"created": "Thu, 24 Dec 2015 10:20:30 GMT",
"version": "v1"
}
] | 2016-05-04 | [
[
"Nozari",
"K.",
""
],
[
"Khodadi",
"M.",
""
],
[
"Gorji",
"M. A.",
""
]
] | Existence of a minimal measurable length, as an effective cutoff in the ultraviolet regime, is a common feature of all approaches to the quantum gravity proposal. It is widely believed that this length scale will be of the order of the Planck length $\lambda=\lambda_0\,l_{_{\rm Pl}}$, where $\lambda_0\sim{\mathcal O}(1... |
1405.2504 | Nima Khosravi | Nima Khosravi | Bi-Connected Gauss-Bonnet Gravity | 5 pages. A companion to 1309.2291 | null | 10.1007/s10714-015-1885-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a bi-connection model in the presence of four-dimensional
Gauss-Bonnet term adding to the Einstein-Hilbert action. This generalization
solves the dynamics issue which exists in pure Einstein-Hilbert formalism of
bi-connection model. As an example we study the Weyl inspired bi-connection
model and show the... | [
{
"created": "Sun, 11 May 2014 07:04:38 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Khosravi",
"Nima",
""
]
] | We consider a bi-connection model in the presence of four-dimensional Gauss-Bonnet term adding to the Einstein-Hilbert action. This generalization solves the dynamics issue which exists in pure Einstein-Hilbert formalism of bi-connection model. As an example we study the Weyl inspired bi-connection model and show there... |
2405.13221 | Tyler McMaken | Tyler McMaken | Backreaction from quantum fluxes at the Kerr inner horizon | 12 pages, 5 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Black holes modeled by the Kerr metric are not semiclassically
self-consistent at or below the inner horizon. The renormalized stress-energy
tensor (RSET) of a scalar quantum field in the Unruh state has been found to
diverge at the Kerr inner horizon, causing the geometry to backreact in a
non-trivial way. In an eff... | [
{
"created": "Tue, 21 May 2024 22:12:24 GMT",
"version": "v1"
}
] | 2024-05-24 | [
[
"McMaken",
"Tyler",
""
]
] | Black holes modeled by the Kerr metric are not semiclassically self-consistent at or below the inner horizon. The renormalized stress-energy tensor (RSET) of a scalar quantum field in the Unruh state has been found to diverge at the Kerr inner horizon, causing the geometry to backreact in a non-trivial way. In an effor... |
gr-qc/0206045 | Dumitru Baleanu | D. Baleanu, S. Baskal | Killing-Yano symmetry for a class of spacetimes admitting parallel null
1-planes | 11 pages, LaTeX, to be published in Il Nuovo Cimento B | Nuovo Cim. B117 (2002) 501-510 | null | null | gr-qc | null | A possible generalization of plane fronted waves with parallel rays
(gpp-wave) fall into a more general class of metrics admitting parallel null
1-planes. For gpp-wave metric, the zero-curvature condition is given, the
Killing-Yano tensors of order two and three are found and the corresponding
Killing tensors are con... | [
{
"created": "Mon, 17 Jun 2002 13:38:38 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Baleanu",
"D.",
""
],
[
"Baskal",
"S.",
""
]
] | A possible generalization of plane fronted waves with parallel rays (gpp-wave) fall into a more general class of metrics admitting parallel null 1-planes. For gpp-wave metric, the zero-curvature condition is given, the Killing-Yano tensors of order two and three are found and the corresponding Killing tensors are const... |
1905.10050 | Youngone Lee | Hyeong-Chan Kim, Youngone Lee | Spherically Symmetric Wormholes with anisotropic matter | 21 pages, 7 figures | JCAP09(2019)001 | 10.1088/1475-7516/2019/09/001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the geometry of a wormhole spacetime filled with anisotropic matter
in the context of general relativity. In the course of the study, new static
and spherically symmetric solutions, analytic and numerical ones, are found. We
specify the existence condition for a wormhole throat. We analyze properties of
the ... | [
{
"created": "Fri, 24 May 2019 06:29:05 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Sep 2019 03:21:02 GMT",
"version": "v2"
}
] | 2019-09-04 | [
[
"Kim",
"Hyeong-Chan",
""
],
[
"Lee",
"Youngone",
""
]
] | We study the geometry of a wormhole spacetime filled with anisotropic matter in the context of general relativity. In the course of the study, new static and spherically symmetric solutions, analytic and numerical ones, are found. We specify the existence condition for a wormhole throat. We analyze properties of the so... |
gr-qc/9712047 | Steve Brandt | P. Anninos, S. R. Brandt, P. Walker | New Coordinate Systems for Axisymmetric Black Hole Collisions | 22 pages, 12 postscript figures, LaTeX | Phys.Rev. D57 (1998) 6158-6167 | 10.1103/PhysRevD.57.6158 | AEI2-12-10-97 | gr-qc | null | We describe a grid generation procedure designed to construct new classes of
orthogonal coordinate systems for binary black hole spacetimes. The computed
coordinates offer an alternative approach to current methods, in addition to
providing a framework for potentially more stable and accurate evolutions of
colliding ... | [
{
"created": "Wed, 10 Dec 1997 16:08:26 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Anninos",
"P.",
""
],
[
"Brandt",
"S. R.",
""
],
[
"Walker",
"P.",
""
]
] | We describe a grid generation procedure designed to construct new classes of orthogonal coordinate systems for binary black hole spacetimes. The computed coordinates offer an alternative approach to current methods, in addition to providing a framework for potentially more stable and accurate evolutions of colliding bl... |
1908.02012 | Kirill Bronnikov | K.A. Bronnikov | Spherically symmetric black holes and wormholes in hybrid
metric-Palatini gravity | 12 pages, 5 figures. Minor changes, a reference added | Grav. Cosmol. 25, 331-341 (2019) | 10.1134/S0202289319040030 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The so-called hybrid metric-Palatini theory of gravity (HMPG), proposed in
2012 by T. Harko et al., is known to successfully describe both local
(solar-system) and cosmological observations. This paper gives a complete
description of static, spherically vacuum solutions of HMPG in the simplest
case where its scalar-t... | [
{
"created": "Tue, 6 Aug 2019 08:31:47 GMT",
"version": "v1"
},
{
"created": "Sun, 25 Aug 2019 08:27:09 GMT",
"version": "v2"
}
] | 2020-10-20 | [
[
"Bronnikov",
"K. A.",
""
]
] | The so-called hybrid metric-Palatini theory of gravity (HMPG), proposed in 2012 by T. Harko et al., is known to successfully describe both local (solar-system) and cosmological observations. This paper gives a complete description of static, spherically vacuum solutions of HMPG in the simplest case where its scalar-ten... |
1707.01948 | Marek Szydlowski | Marek Szydlowski, Aleksander Stachowski, Andrzej Borowiec | Emergence of dynamical dark energy from polynomial $f(R)$ theory in
Palatini formalism | 8 pages, 15 figures | Eur. Phys. J. C77, 603 (2017) | 10.1140/epjc/s10052-017-5181-2 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider FRW cosmology in $f(R)= R+ \gamma R^2+\delta R^3$ modified
framework. The Palatini approach reduces its dynamics to the simple
generalization of Friedmann equation. Thus we study the dynamics in
two-dimensional phase space with some details. After reformulation of the model
in the Einstein frame, it reduc... | [
{
"created": "Thu, 6 Jul 2017 19:51:43 GMT",
"version": "v1"
}
] | 2017-09-29 | [
[
"Szydlowski",
"Marek",
""
],
[
"Stachowski",
"Aleksander",
""
],
[
"Borowiec",
"Andrzej",
""
]
] | We consider FRW cosmology in $f(R)= R+ \gamma R^2+\delta R^3$ modified framework. The Palatini approach reduces its dynamics to the simple generalization of Friedmann equation. Thus we study the dynamics in two-dimensional phase space with some details. After reformulation of the model in the Einstein frame, it reduces... |
gr-qc/9806119 | Jorge Pullin | Jorge Pullin | An overview of canonical quantum gravity | 6 pages, RevTeX, no figures | Int.J.Theor.Phys.38:1051-1061,1999 | 10.1023/A:1026646111144 | CGPG-98/7-1 | gr-qc | null | This is a summary of a talk delivered at the workshop ``Quantum gravity in
the Southern Cone II''. We present a very brief review of current results on
canonical quantization of general relativity using Ashtekar's variables and
loop quantization.
| [
{
"created": "Tue, 30 Jun 1998 15:39:19 GMT",
"version": "v1"
}
] | 2011-04-15 | [
[
"Pullin",
"Jorge",
""
]
] | This is a summary of a talk delivered at the workshop ``Quantum gravity in the Southern Cone II''. We present a very brief review of current results on canonical quantization of general relativity using Ashtekar's variables and loop quantization. |
gr-qc/0012082 | Pavlov | Yu. V. Pavlov | Nonconformal Scalar Field in a Homogeneous Isotropic Space and the
Method of Hamiltonian Diagonalization | to be published in Theor. Math. Phys | Theor.Math.Phys.126:92-100,2001 | 10.1023/A:1005206315688 | null | gr-qc | null | The diagonalization of the metrical Hamiltonian of a scalar field with an
arbitrary coupling with a curvature in N-dimensional homogeneous isotropic
space is performed. The energy spectrum of the corresponding quasiparticles is
obtained. The energies of the quasiparticles corresponding to the diagonal form
of the can... | [
{
"created": "Wed, 20 Dec 2000 16:15:34 GMT",
"version": "v1"
}
] | 2011-02-15 | [
[
"Pavlov",
"Yu. V.",
""
]
] | The diagonalization of the metrical Hamiltonian of a scalar field with an arbitrary coupling with a curvature in N-dimensional homogeneous isotropic space is performed. The energy spectrum of the corresponding quasiparticles is obtained. The energies of the quasiparticles corresponding to the diagonal form of the canon... |
2211.02414 | Umananda Dev Goswami | Nashiba Parbin, Dhruba Jyoti Gogoi, Jyatsnasree Bora and Umananda Dev
Goswami | Deflection angle, quasinormal modes and optical properties of a de
Sitter black hole in $f(\mathcal{T}, \mathcal{B})$ gravity | 22 pages, 9 figures; the published version in Physics of the Dark
Universe | Physics of the Dark Universe 42, 101315 (2023) | 10.1016/j.dark.2023.101315 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The current study aims to examine the impact of the boundary term on the
bending angle of light for a static spherically symmetric black hole in the
modified gravity described by the $f(\mathcal{T}, \mathcal{B})$ function. To
accomplish this objective, we employ the Ishihara \textit{et al.}~method, which
enables us t... | [
{
"created": "Fri, 4 Nov 2022 12:42:10 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Apr 2023 10:52:22 GMT",
"version": "v2"
},
{
"created": "Sat, 26 Aug 2023 04:16:37 GMT",
"version": "v3"
}
] | 2023-08-30 | [
[
"Parbin",
"Nashiba",
""
],
[
"Gogoi",
"Dhruba Jyoti",
""
],
[
"Bora",
"Jyatsnasree",
""
],
[
"Goswami",
"Umananda Dev",
""
]
] | The current study aims to examine the impact of the boundary term on the bending angle of light for a static spherically symmetric black hole in the modified gravity described by the $f(\mathcal{T}, \mathcal{B})$ function. To accomplish this objective, we employ the Ishihara \textit{et al.}~method, which enables us to ... |
2006.03168 | Katerina Chatziioannou | Katerina Chatziioannou | Neutron star tidal deformability and equation of state constraints | invited review for General Relativity and Gravitation, published
version | null | 10.1007/s10714-020-02754-3 | null | gr-qc astro-ph.HE nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Despite their long history and astrophysical importance, some of the key
properties of neutron stars are still uncertain. The extreme conditions
encountered in their interiors, involving matter of uncertain composition at
extreme density and isospin asymmetry, uniquely determine the stars'
macroscopic properties with... | [
{
"created": "Thu, 4 Jun 2020 23:23:02 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Nov 2020 00:13:49 GMT",
"version": "v2"
}
] | 2020-11-13 | [
[
"Chatziioannou",
"Katerina",
""
]
] | Despite their long history and astrophysical importance, some of the key properties of neutron stars are still uncertain. The extreme conditions encountered in their interiors, involving matter of uncertain composition at extreme density and isospin asymmetry, uniquely determine the stars' macroscopic properties within... |
1006.1764 | Thomas Sotiriou | Ted Jacobson and Thomas P. Sotiriou | Destroying black holes with test bodies | Contribution to the proceedings of the First Mediterranean Conference
on Classical and Quantum Gravity (talk given by T. P. S.). Summarizes the
results of Phys. Rev. Lett. 103, 141101 (2009), arXiv:0907.4146 [gr-qc] and
considers further examples | J.Phys.Conf.Ser.222:012041,2010 | 10.1088/1742-6596/222/1/012041 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If a black hole can accrete a body whose spin or charge would send the black
hole parameters over the extremal limit, then a naked singularity would
presumably form, in violation of the cosmic censorship conjecture. We review
some previous results on testing cosmic censorship in this way using the test
body approxima... | [
{
"created": "Wed, 9 Jun 2010 11:08:57 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Jacobson",
"Ted",
""
],
[
"Sotiriou",
"Thomas P.",
""
]
] | If a black hole can accrete a body whose spin or charge would send the black hole parameters over the extremal limit, then a naked singularity would presumably form, in violation of the cosmic censorship conjecture. We review some previous results on testing cosmic censorship in this way using the test body approximati... |
1902.06469 | Anna Kotanjyan | Alexander Balakin, Alexei Ilin, Anna Kotanjyan and Levon Grigoryan | Relativistic Neutron Stars: Rheological Type Extensions of the Equations
of State | 14 pages, 1 figure, 1 table | Symmetry 2019, 11(2), 189 | 10.3390/sym11020189 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the Rheological Paradigm, one has extended the equations of state
for relativistic spherically symmetric static neutron stars, taking into
consideration the derivative of the matter pressure along the so-called
director four-vector. The modified equations of state are applied to the model
of a zero-temperatu... | [
{
"created": "Mon, 18 Feb 2019 09:08:07 GMT",
"version": "v1"
}
] | 2019-02-19 | [
[
"Balakin",
"Alexander",
""
],
[
"Ilin",
"Alexei",
""
],
[
"Kotanjyan",
"Anna",
""
],
[
"Grigoryan",
"Levon",
""
]
] | Based on the Rheological Paradigm, one has extended the equations of state for relativistic spherically symmetric static neutron stars, taking into consideration the derivative of the matter pressure along the so-called director four-vector. The modified equations of state are applied to the model of a zero-temperature... |
2004.08143 | Roberto Emparan | Roberto Emparan and Daniel Marin | Precursory collapse in Neutron Star-Black Hole mergers | 13 pages, 16 figures. v2: minor clarifications and added references.
Matches published version | Phys. Rev. D 102, 024009 (2020) | 10.1103/PhysRevD.102.024009 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the properties of the event horizon in the merger between a
large black hole and a smaller neutron star. We find that, if the star is
compact enough, then, in its rest frame a horizon begins to grow inside the
star before it merges with the black hole, in a manner analogous to the growth
of the event h... | [
{
"created": "Fri, 17 Apr 2020 09:41:27 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Jul 2020 16:33:52 GMT",
"version": "v2"
}
] | 2022-03-07 | [
[
"Emparan",
"Roberto",
""
],
[
"Marin",
"Daniel",
""
]
] | We investigate the properties of the event horizon in the merger between a large black hole and a smaller neutron star. We find that, if the star is compact enough, then, in its rest frame a horizon begins to grow inside the star before it merges with the black hole, in a manner analogous to the growth of the event hor... |
gr-qc/9704064 | Werner Martins Vieira | Werner M. Vieira and Patricio S. Letelier | On the integrability of halo dipoles in gravity | 9 pages, REVTEX, two postscript figures included | Phys.Lett. A228 (1997) 22 | 10.1016/S0375-9601(97)00084-4 | null | gr-qc | null | We stress that halo dipole components are nontrivial in core-halo systems in
both Newton's gravity and General Relativity. To this end, we extend a recent
exact relativistic model to include also a halo dipole component. Next, we
consider orbits evolving in the inner vacuum between a monopolar core and a
pure halo di... | [
{
"created": "Wed, 23 Apr 1997 17:47:04 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Vieira",
"Werner M.",
""
],
[
"Letelier",
"Patricio S.",
""
]
] | We stress that halo dipole components are nontrivial in core-halo systems in both Newton's gravity and General Relativity. To this end, we extend a recent exact relativistic model to include also a halo dipole component. Next, we consider orbits evolving in the inner vacuum between a monopolar core and a pure halo dipo... |
1008.4838 | Md. Rahman Atiqur | M. Atiqur Rahman | Numerical Solutions of ideal two-fluid equations very closed to the
event horizon of Schwarzschild black hole | 16 pages, 15 figures. arXiv admin note: text overlap with
arXiv:0902.3766, arXiv:0807.4595 | Astrophys Space Sci 342 (2012) 333 | 10.1007/s10509-012-1171-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The 3+1 formalism of Thorne, Price and Macdonald has been used to derive the
linear two-fluid equations describing transverse and longitudinal waves
propagating in the two-fluid ideal collisionless plasmas surrounding a
Schwarzschild black hole. The plasma is assumed to be falling in radial
direction toward the event... | [
{
"created": "Sat, 28 Aug 2010 06:49:30 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Jun 2012 11:48:52 GMT",
"version": "v2"
},
{
"created": "Sat, 14 Jul 2012 05:53:02 GMT",
"version": "v3"
}
] | 2012-11-12 | [
[
"Rahman",
"M. Atiqur",
""
]
] | The 3+1 formalism of Thorne, Price and Macdonald has been used to derive the linear two-fluid equations describing transverse and longitudinal waves propagating in the two-fluid ideal collisionless plasmas surrounding a Schwarzschild black hole. The plasma is assumed to be falling in radial direction toward the event h... |
1310.3575 | Viktoriya Giryanskaya (Morozova) | Viktoriya S. Morozova, Luciano Rezzolla, Bobomurat J. Ahmedov | Nonsingular electrodynamics of a rotating black hole boosted in an
asymptotically uniform magnetic test field | 16 pages, 9 figures | Phys. Rev. D 89, 104030 (2014) | 10.1103/PhysRevD.89.104030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the Wald solution to a black hole that is also boosted. More
specifically, we derive analytic solutions for the Maxwell equations for a
rotating black hole moving at constant speed in an asymptotically uniform
magnetic test field. By adopting Kerr-Schild coordinates we avoid singular
behaviours at the horiz... | [
{
"created": "Mon, 14 Oct 2013 06:45:45 GMT",
"version": "v1"
},
{
"created": "Tue, 27 May 2014 20:47:48 GMT",
"version": "v2"
}
] | 2014-05-29 | [
[
"Morozova",
"Viktoriya S.",
""
],
[
"Rezzolla",
"Luciano",
""
],
[
"Ahmedov",
"Bobomurat J.",
""
]
] | We extend the Wald solution to a black hole that is also boosted. More specifically, we derive analytic solutions for the Maxwell equations for a rotating black hole moving at constant speed in an asymptotically uniform magnetic test field. By adopting Kerr-Schild coordinates we avoid singular behaviours at the horizon... |
1007.3086 | Douglas Shaw | John D. Barrow and Douglas J. Shaw | A New Solution of The Cosmological Constant Problems | 5 pages; v3: version accepted by Phys. Rev. Lett | Phys.Rev.Lett.106:101302,2011 | 10.1103/PhysRevLett.106.101302 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the usual gravitational action principle by promoting the bare
cosmological constant (CC) from a parameter to a field which can take many
possible values. Variation leads to a new integral constraint equation which
determines the classical value of the effective CC that dominates the wave
function of the un... | [
{
"created": "Mon, 19 Jul 2010 08:41:30 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Oct 2010 10:40:21 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Feb 2011 09:20:14 GMT",
"version": "v3"
}
] | 2011-03-21 | [
[
"Barrow",
"John D.",
""
],
[
"Shaw",
"Douglas J.",
""
]
] | We extend the usual gravitational action principle by promoting the bare cosmological constant (CC) from a parameter to a field which can take many possible values. Variation leads to a new integral constraint equation which determines the classical value of the effective CC that dominates the wave function of the univ... |
1704.05701 | Shaoqi Hou | Shaoqi Hou | Asymptotic Symmetries of the Null Infinity and the Isolated Horizon | null | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The common intrinsic geometry shared by all the null hypersurfaces gives rise
to the asymptotic symmetries found on the null infinities $\mathscr I^\pm$ and
the isolated horizons $\Delta$. In this work, the properties of a null
hypersurface are reviewed and the invariance of its intrinsic geometry
($n^an^bh_{ab}$) is... | [
{
"created": "Wed, 19 Apr 2017 11:41:31 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Jul 2017 04:05:26 GMT",
"version": "v2"
}
] | 2018-01-12 | [
[
"Hou",
"Shaoqi",
""
]
] | The common intrinsic geometry shared by all the null hypersurfaces gives rise to the asymptotic symmetries found on the null infinities $\mathscr I^\pm$ and the isolated horizons $\Delta$. In this work, the properties of a null hypersurface are reviewed and the invariance of its intrinsic geometry ($n^an^bh_{ab}$) is r... |
gr-qc/0412039 | Viqar Husain | Viqar Husain, Oliver Winkler | Quantum black holes from null expansion operators | 5 pages, version to appear in CQG | Class.Quant.Grav.22:L135-L142,2005 | 10.1088/0264-9381/22/21/L02 | null | gr-qc hep-th | null | Using a recently developed quantization of spherically symmetric gravity
coupled to a scalar field, we give a construction of null expansion operators
that allow a definition of general, fully dynamical quantum black holes. These
operators capture the intuitive idea that classical black holes are defined by
the prese... | [
{
"created": "Wed, 8 Dec 2004 20:52:59 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Sep 2005 18:27:21 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Husain",
"Viqar",
""
],
[
"Winkler",
"Oliver",
""
]
] | Using a recently developed quantization of spherically symmetric gravity coupled to a scalar field, we give a construction of null expansion operators that allow a definition of general, fully dynamical quantum black holes. These operators capture the intuitive idea that classical black holes are defined by the presenc... |
1806.00891 | Volker Perlick | Volker Perlick, Claus L\"ammerzahl, Alfredo Macias | Effects of non-linear vacuum electrodynamics on the polarization plane
of light | Minor revisions; 12 pages, no figures | Phys. Rev. D 98, 105014 (2018) | 10.1103/PhysRevD.98.105014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Pleba{\'n}ski class of nonlinear theories of vacuum
electrodynamics, i.e., Lagrangian theories that are Lorentz invariant and gauge
invariant. Our main goal is to derive the transport law of the polarization
plane in such a theory, on an unspecified general-relativistic spacetime and
with an unspecifi... | [
{
"created": "Sun, 3 Jun 2018 23:01:26 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Nov 2018 01:23:57 GMT",
"version": "v2"
}
] | 2018-12-05 | [
[
"Perlick",
"Volker",
""
],
[
"Lämmerzahl",
"Claus",
""
],
[
"Macias",
"Alfredo",
""
]
] | We consider the Pleba{\'n}ski class of nonlinear theories of vacuum electrodynamics, i.e., Lagrangian theories that are Lorentz invariant and gauge invariant. Our main goal is to derive the transport law of the polarization plane in such a theory, on an unspecified general-relativistic spacetime and with an unspecified... |
1507.08915 | Elizabeth Winstanley | Brien C. Nolan and Elizabeth Winstanley | On the stability of dyons and dyonic black holes in Einstein-Yang-Mills
theory | 27 pages, 6 figures, minor changes, matches version published in
Classical and Quantum Gravity | null | 10.1088/0264-9381/33/4/045003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the stability of four-dimensional dyonic soliton and black
hole solutions of ${\mathfrak {su}}(2)$ Einstein-Yang-Mills theory in anti-de
Sitter space. We prove that, in a neighbourhood of the embedded trivial
(Schwarzschild-)anti-de Sitter solution, there exist non-trivial dyonic soliton
and black hole... | [
{
"created": "Fri, 31 Jul 2015 15:30:20 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Jan 2016 17:44:39 GMT",
"version": "v2"
}
] | 2016-01-27 | [
[
"Nolan",
"Brien C.",
""
],
[
"Winstanley",
"Elizabeth",
""
]
] | We investigate the stability of four-dimensional dyonic soliton and black hole solutions of ${\mathfrak {su}}(2)$ Einstein-Yang-Mills theory in anti-de Sitter space. We prove that, in a neighbourhood of the embedded trivial (Schwarzschild-)anti-de Sitter solution, there exist non-trivial dyonic soliton and black hole s... |
0901.4583 | Ariel Edery | Ariel Edery, Luca Fabbri, M.B. Paranjape | Gravitationally coupled magnetic monopole and conformal symmetry
breaking | Theory Canada IV conference proceeding; to appear in Can. J. Phys | Can.J.Phys.87:251-254,2009 | 10.1139/P08-131 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a Georgi-Glashow model conformally coupled to gravity. The
conformally invariant action includes a triplet of scalar fields and SO(3)
non-Abelian gauge fields. However, the usual mass term $\mu^2 \phi^2$ is
forbidden by the symmetry and this role is now played by the conformal coupling
of the Ricci scalar... | [
{
"created": "Thu, 29 Jan 2009 00:03:03 GMT",
"version": "v1"
}
] | 2009-06-19 | [
[
"Edery",
"Ariel",
""
],
[
"Fabbri",
"Luca",
""
],
[
"Paranjape",
"M. B.",
""
]
] | We consider a Georgi-Glashow model conformally coupled to gravity. The conformally invariant action includes a triplet of scalar fields and SO(3) non-Abelian gauge fields. However, the usual mass term $\mu^2 \phi^2$ is forbidden by the symmetry and this role is now played by the conformal coupling of the Ricci scalar t... |
1709.07297 | Maciej Kolanowski | Maciej Kolanowski and Jerzy Lewandowski | Symmetries of the Trautman retarded radial coordinates | 12 pages, no figures | null | 10.1088/1361-6382/aaa1dd | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider spacetime described by observer that uses Trautman's retarded
radial coordinates system. Given a metric tensor, we find all the symmetry
maps. They set a 10 dimensional family of local diffeomorphisms of spacetime
and can be parametrized by the Poincar\'e algebra. This result is similar to
the symmetries ... | [
{
"created": "Thu, 21 Sep 2017 13:08:19 GMT",
"version": "v1"
}
] | 2018-05-01 | [
[
"Kolanowski",
"Maciej",
""
],
[
"Lewandowski",
"Jerzy",
""
]
] | We consider spacetime described by observer that uses Trautman's retarded radial coordinates system. Given a metric tensor, we find all the symmetry maps. They set a 10 dimensional family of local diffeomorphisms of spacetime and can be parametrized by the Poincar\'e algebra. This result is similar to the symmetries of... |
2210.00938 | Junji Jia | Jinhong He, Qianchuan Wang, Qiyue Hu, Li Feng and Junji Jia | Deflection in higher dimensional spacetime and asymptotically non-flat
spacetimes | 30 pages, 7 figures; title modified; to match published version in
Class.Quant.Grav | null | 10.1088/1361-6382/acbade | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a perturbative technique, in this work we study the deflection of null
and timelike signals in the extended Einstein-Maxwell spacetime, the
Born-Infeld gravity and the charged Ellis-Bronnikov (CEB) spacetime in the weak
field limit. The deflection angles are found to take a (quasi-)series form of
the impact par... | [
{
"created": "Mon, 3 Oct 2022 13:49:50 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Feb 2023 06:04:49 GMT",
"version": "v2"
}
] | 2023-03-08 | [
[
"He",
"Jinhong",
""
],
[
"Wang",
"Qianchuan",
""
],
[
"Hu",
"Qiyue",
""
],
[
"Feng",
"Li",
""
],
[
"Jia",
"Junji",
""
]
] | Using a perturbative technique, in this work we study the deflection of null and timelike signals in the extended Einstein-Maxwell spacetime, the Born-Infeld gravity and the charged Ellis-Bronnikov (CEB) spacetime in the weak field limit. The deflection angles are found to take a (quasi-)series form of the impact param... |
1310.7650 | Hongwei Yu | Jiawei Hu, Hongwei Yu | Quantum entanglement generation in de Sitter spacetime | 11 pages, no figures, to be published in PRD | Physical Review D 88, 104003 (2013) | 10.1103/PhysRevD.88.104003 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study, in the framework of open quantum systems, the entanglement
generation between two mutually independent static two-level atoms in de Sitter
spacetime. We treat the two-atom system as an open system in interaction with a
bath of fluctuating conformally coupled massless scalar fields in the de Sitter
invariant... | [
{
"created": "Tue, 29 Oct 2013 00:10:28 GMT",
"version": "v1"
}
] | 2013-11-14 | [
[
"Hu",
"Jiawei",
""
],
[
"Yu",
"Hongwei",
""
]
] | We study, in the framework of open quantum systems, the entanglement generation between two mutually independent static two-level atoms in de Sitter spacetime. We treat the two-atom system as an open system in interaction with a bath of fluctuating conformally coupled massless scalar fields in the de Sitter invariant v... |
gr-qc/9401009 | Tonatiuh Matos | Tonatiuh Matos | 5D Axisymmetric Stationary Solutions as Harmonic Maps | 18 pages, 7 tables, to appear in J. Math. Phys | J.Math.Phys.35:1302-1321,1994 | 10.1063/1.530590 | CINVESTAV 8/93 | gr-qc | null | We present the complete scheme of the application of the one-and two
dimensional subspace and subgroups method to five-dimensional gravity with a
$G_{3}$ group of motion. We do so in the space time and in the potential space
formalisms. From this method one obtains the Kramer, Belinsky-Ruffini,
Dobiasch-Maison, Cl\'{... | [
{
"created": "Mon, 10 Jan 1994 23:36:36 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Matos",
"Tonatiuh",
""
]
] | We present the complete scheme of the application of the one-and two dimensional subspace and subgroups method to five-dimensional gravity with a $G_{3}$ group of motion. We do so in the space time and in the potential space formalisms. From this method one obtains the Kramer, Belinsky-Ruffini, Dobiasch-Maison, Cl\'{e}... |
gr-qc/9505023 | Maurice Van Putten | Maurice H.P.M. van Putten and Douglas M. Eardley | NONLINEAR WAVE EQUATIONS FOR RELATIVITY | 8 pages, LaTex | Phys.Rev. D53 (1996) 3056-3063 | 10.1103/PhysRevD.53.3056 | CRSR 1095 | gr-qc | null | Graviational radiation is described by canonical Yang-Mills wave equations on
the curved space-time manifold, together with evolution equations for the
metric in the tangent bundle. The initial data problem is described in
Yang-Mills scalar and vector potentials, resulting in Lie-constraints in
addition to the famili... | [
{
"created": "Tue, 16 May 1995 17:05:44 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"van Putten",
"Maurice H. P. M.",
""
],
[
"Eardley",
"Douglas M.",
""
]
] | Graviational radiation is described by canonical Yang-Mills wave equations on the curved space-time manifold, together with evolution equations for the metric in the tangent bundle. The initial data problem is described in Yang-Mills scalar and vector potentials, resulting in Lie-constraints in addition to the familiar... |
1612.05106 | Gamal G.L. Nashed | G.G.L. Nashed and W. El Hanafy | Analytic rotating black hole solutions in $N$-dimensional $f(T)$ gravity | 17 pages LaTex,Submitted to EPJC | EPJC 77 (2017), 90 | 10.1140/epjc/s10052-017-4663-6 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A non-diagonal vielbein ansatz is applied to the $N$-dimension field
equations of $f(T)$ gravity. An analytical vacuum solution is derived for the
quadratic polynomial $f(T)=T+\epsilon T^2$ in the presence of a cosmological
constant $\Lambda$. Since the induced metric has off diagonal components, that
cannot be remov... | [
{
"created": "Fri, 9 Dec 2016 09:50:15 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Jan 2017 07:18:33 GMT",
"version": "v2"
},
{
"created": "Sun, 29 Jan 2017 08:07:18 GMT",
"version": "v3"
}
] | 2017-04-21 | [
[
"Nashed",
"G. G. L.",
""
],
[
"Hanafy",
"W. El",
""
]
] | A non-diagonal vielbein ansatz is applied to the $N$-dimension field equations of $f(T)$ gravity. An analytical vacuum solution is derived for the quadratic polynomial $f(T)=T+\epsilon T^2$ in the presence of a cosmological constant $\Lambda$. Since the induced metric has off diagonal components, that cannot be removed... |
2002.01756 | Jungjai Lee | Keunsu Cheon, Jungjai Lee | N=2 PNGB Quintessence Dark Energy | 7 pages, 2 figures, minor revision, to be published in JKPS | null | 10.1007/s40042-021-00235-7 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we show that a pseudo-Nambu-Goldstone boson (PNGB) quintessence
of spontaneous symmetry breaking (SSB) is responsible for an epoch of the late
time cosmic acceleration. We suggest that an N=2 PNGB quintessence with SSB can
give rise to the fast-roll cosmic acceleration in evolution of the Universe. In
t... | [
{
"created": "Wed, 5 Feb 2020 12:34:26 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Feb 2020 05:14:52 GMT",
"version": "v2"
},
{
"created": "Wed, 29 Jul 2020 06:23:22 GMT",
"version": "v3"
},
{
"created": "Thu, 15 Apr 2021 09:37:55 GMT",
"version": "v4"
}
] | 2021-07-28 | [
[
"Cheon",
"Keunsu",
""
],
[
"Lee",
"Jungjai",
""
]
] | In this paper we show that a pseudo-Nambu-Goldstone boson (PNGB) quintessence of spontaneous symmetry breaking (SSB) is responsible for an epoch of the late time cosmic acceleration. We suggest that an N=2 PNGB quintessence with SSB can give rise to the fast-roll cosmic acceleration in evolution of the Universe. In the... |
1804.07866 | Salvatore Vitale | Salvatore Vitale, Chris Whittle | Characterization of binary black holes by heterogeneous
gravitational-wave networks | Comments welcome. Fixed silly typo page 10 | Phys. Rev. D 98, 024029 (2018) | 10.1103/PhysRevD.98.024029 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves detected by advanced ground-based detectors have allowed
studying the universe in a way which is fully complementary to electromagnetic
observations. As more sources are detected, it will be possible to measure
properties of the local population of black holes and neutron stars, including
their ma... | [
{
"created": "Fri, 20 Apr 2018 23:52:59 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Apr 2018 05:15:39 GMT",
"version": "v2"
}
] | 2018-07-25 | [
[
"Vitale",
"Salvatore",
""
],
[
"Whittle",
"Chris",
""
]
] | Gravitational waves detected by advanced ground-based detectors have allowed studying the universe in a way which is fully complementary to electromagnetic observations. As more sources are detected, it will be possible to measure properties of the local population of black holes and neutron stars, including their mass... |
1207.5320 | Asimina Arvanitaki | Asimina Arvanitaki and Andrew A. Geraci | Detecting high-frequency gravitational waves with optically-levitated
sensors | 5 pages, 2 figures, 2 tables, submitted to PRL -- v2: GR calculation
corrected, size of the signal and experimental geometry unaffected, cavity
response included in sensitivity plot and LIGO sensitivity curves updated | null | 10.1103/PhysRevLett.110.071105 | null | gr-qc astro-ph.IM hep-ph physics.atom-ph physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a tunable resonant sensor to detect gravitational waves in the
frequency range of 50-300 kHz using optically trapped and cooled dielectric
microspheres or micro-discs. The technique we describe can exceed the
sensitivity of laser-based gravitational wave observatories in this frequency
range, using an inst... | [
{
"created": "Mon, 23 Jul 2012 08:46:14 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jan 2013 18:45:31 GMT",
"version": "v2"
}
] | 2015-06-05 | [
[
"Arvanitaki",
"Asimina",
""
],
[
"Geraci",
"Andrew A.",
""
]
] | We propose a tunable resonant sensor to detect gravitational waves in the frequency range of 50-300 kHz using optically trapped and cooled dielectric microspheres or micro-discs. The technique we describe can exceed the sensitivity of laser-based gravitational wave observatories in this frequency range, using an instru... |
0904.4805 | Ishwaree Neupane | Ishwaree P Neupane | Black Holes, Entropy Bound and Causality Violation | 8 pages, no figures; Invited contribution to appear in the
Proceedings of the 75 Years since Solvay, Singapore, Nov 2008, (World
Scientific, Singapore, 2009) | Int.J.Mod.Phys.A24:3584-3591,2009 | 10.1142/S0217751X09047235 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravity/gauge theory duality has provided us a way of studying QCD at
short distances from straightforward calculations in classical general
relativity. Among numerous results obtained so far, one of the most striking is
the universality of the ratio of the shear viscosity to the entropy density.
For all gauge th... | [
{
"created": "Thu, 30 Apr 2009 12:20:47 GMT",
"version": "v1"
}
] | 2011-02-16 | [
[
"Neupane",
"Ishwaree P",
""
]
] | The gravity/gauge theory duality has provided us a way of studying QCD at short distances from straightforward calculations in classical general relativity. Among numerous results obtained so far, one of the most striking is the universality of the ratio of the shear viscosity to the entropy density. For all gauge theo... |
gr-qc/0604090 | Ujjal Debnath | Sanjukta Chakraborty, Subenoy Chakraborty and Ujjal Debnath | The effect of Pressure in Higher Dimensional Quasi-Spherical
Gravitational Collapse | 11 pages, 6 figures, RevTeX style | Int.J.Mod.Phys.D16:833-846,2007 | 10.1142/S0218271807010432 | null | gr-qc | null | We study gravitational collapse in higher dimensional quasi-spherical
Szekeres space-time for matter with anisotropic pressure. Both local and global
visibility of central curvature singularity has been studied and it is found
that with proper choice of initial data it is possible to show the validity of
CCC for six ... | [
{
"created": "Fri, 21 Apr 2006 05:24:41 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Chakraborty",
"Sanjukta",
""
],
[
"Chakraborty",
"Subenoy",
""
],
[
"Debnath",
"Ujjal",
""
]
] | We study gravitational collapse in higher dimensional quasi-spherical Szekeres space-time for matter with anisotropic pressure. Both local and global visibility of central curvature singularity has been studied and it is found that with proper choice of initial data it is possible to show the validity of CCC for six an... |
1305.4513 | Andrea Dapor | Andrea Dapor, Jerzy Lewandowski, Yaser Tavakoli | Quantum field theory on LQC Bianchi spacetimes | 3 pages. To appear in Proceedings of the 13th Marcel Grossmann
Meeting (MG13), Stockholm, Sweden, 1-7 July 2012 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum theory of a scalar field is developed on the LQC Bianchi I
space-time. By comparing the the quantum field theory for a single mode on
classical and quantum background geometries we find that an effective Bianchi I
space-time emerges. We show that by disregarding the back-reaction no
Lorentz-violation is prese... | [
{
"created": "Mon, 20 May 2013 12:51:04 GMT",
"version": "v1"
}
] | 2013-05-21 | [
[
"Dapor",
"Andrea",
""
],
[
"Lewandowski",
"Jerzy",
""
],
[
"Tavakoli",
"Yaser",
""
]
] | Quantum theory of a scalar field is developed on the LQC Bianchi I space-time. By comparing the the quantum field theory for a single mode on classical and quantum background geometries we find that an effective Bianchi I space-time emerges. We show that by disregarding the back-reaction no Lorentz-violation is present... |
2004.09524 | Asad Khan | Asad Khan, E. A. Huerta, Arnav Das | Physics-inspired deep learning to characterize the signal manifold of
quasi-circular, spinning, non-precessing binary black hole mergers | 25 pages, 12 figures, 1 appendix, 1 Interactive visualization at
https://khanx169.github.io/smr_bbm_v2/interactive_results.html | Physics Letters B 808 (2020) 0370-2693 | 10.1016/j.physletb.2020.135628 | null | gr-qc astro-ph.IM cs.AI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spin distribution of binary black hole mergers contains key information
concerning the formation channels of these objects, and the astrophysical
environments where they form, evolve and coalesce. To quantify the suitability
of deep learning to characterize the signal manifold of quasi-circular,
spinning, non-pre... | [
{
"created": "Mon, 20 Apr 2020 18:00:02 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Aug 2020 22:07:41 GMT",
"version": "v2"
}
] | 2020-08-27 | [
[
"Khan",
"Asad",
""
],
[
"Huerta",
"E. A.",
""
],
[
"Das",
"Arnav",
""
]
] | The spin distribution of binary black hole mergers contains key information concerning the formation channels of these objects, and the astrophysical environments where they form, evolve and coalesce. To quantify the suitability of deep learning to characterize the signal manifold of quasi-circular, spinning, non-prece... |
1606.01663 | Golam Mortuza Hossain | Golam Mortuza Hossain and Gopal Sardar | Transient response from Unruh-DeWitt detector along Rindler trajectory
in polymer quantization | 9 pages, 1 figure, revtex4; v2 new reference added, few typos fixed;
a constant term which was missed earlier incorporated; results unchanged | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If an Unruh-DeWitt detector operates for an infinite proper time along the
trajectory of a uniformly accelerated observer in Fock space then induced
transition rate of the detector is proportional to Planck distribution. For a
realistic detector which operates only for a finite period, the instantaneous
transition ra... | [
{
"created": "Mon, 6 Jun 2016 09:09:26 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jan 2017 12:00:15 GMT",
"version": "v2"
}
] | 2017-01-20 | [
[
"Hossain",
"Golam Mortuza",
""
],
[
"Sardar",
"Gopal",
""
]
] | If an Unruh-DeWitt detector operates for an infinite proper time along the trajectory of a uniformly accelerated observer in Fock space then induced transition rate of the detector is proportional to Planck distribution. For a realistic detector which operates only for a finite period, the instantaneous transition rate... |
0807.2151 | Vjacheslav Dorofeev | V. Yu. Dorofeev | Non-associativity as gravity | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitation interactions are treated as non-associative part of the field's
interactions. Vector-potential of the Dirac equation is extended for the
octonionic algebra. The solution is considered as element of matrix set
$BS\times O_4$.
| [
{
"created": "Mon, 14 Jul 2008 12:51:49 GMT",
"version": "v1"
}
] | 2008-07-15 | [
[
"Dorofeev",
"V. Yu.",
""
]
] | Gravitation interactions are treated as non-associative part of the field's interactions. Vector-potential of the Dirac equation is extended for the octonionic algebra. The solution is considered as element of matrix set $BS\times O_4$. |
2310.15377 | Daniel M\"uller | Daniel M\"uller and Alexey Toporensky | Initial conditions for Starobinsky Inflation with a positive spatial
curvature | In this new version we have included 3 references | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have found numerically initial conditions in the $(R, H)$ plane leading to
a successful Starobinsky inflation in $R+R^2$ gravity for a isotropic metrics
with positive spatial curvature. Trajectories can reach inflation regime either
directly or going through a bounce, and even recollapse followed by a bounce.
Our ... | [
{
"created": "Mon, 23 Oct 2023 21:23:20 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Nov 2023 20:30:55 GMT",
"version": "v2"
}
] | 2023-11-03 | [
[
"Müller",
"Daniel",
""
],
[
"Toporensky",
"Alexey",
""
]
] | We have found numerically initial conditions in the $(R, H)$ plane leading to a successful Starobinsky inflation in $R+R^2$ gravity for a isotropic metrics with positive spatial curvature. Trajectories can reach inflation regime either directly or going through a bounce, and even recollapse followed by a bounce. Our nu... |
2401.00805 | Hengrui Zhu | Hengrui Zhu, Justin L. Ripley, Frans Pretorius, Sizheng Ma, Keefe
Mitman, Robert Owen, Michael Boyle, Yitian Chen, Nils Deppe, Lawrence E.
Kidder, Jordan Moxon, Kyle C. Nelli, Harald P. Pfeiffer, Mark A. Scheel,
William Throwe, and Nils L. Vu | Nonlinear Effects In Black Hole Ringdown From Scattering Experiments I:
spin and initial data dependence of quadratic mode coupling | null | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | We investigate quadratic quasinormal mode coupling in black hole spacetime
through numerical simulations of single perturbed black holes using both
numerical relativity and second-order black hole perturbation theory. Focusing
on the dominant $\ell=|m|=2$ quadrupolar modes, we find good agreement (within
$\sim10\%$) ... | [
{
"created": "Mon, 1 Jan 2024 16:25:11 GMT",
"version": "v1"
}
] | 2024-01-02 | [
[
"Zhu",
"Hengrui",
""
],
[
"Ripley",
"Justin L.",
""
],
[
"Pretorius",
"Frans",
""
],
[
"Ma",
"Sizheng",
""
],
[
"Mitman",
"Keefe",
""
],
[
"Owen",
"Robert",
""
],
[
"Boyle",
"Michael",
""
],
[
"Chen... | We investigate quadratic quasinormal mode coupling in black hole spacetime through numerical simulations of single perturbed black holes using both numerical relativity and second-order black hole perturbation theory. Focusing on the dominant $\ell=|m|=2$ quadrupolar modes, we find good agreement (within $\sim10\%$) be... |
2305.02333 | Jorge Delgado | Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu | EMRIs around $j=1$ black holes with synchronised hair | 20 pages, 15 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study extreme mass ratio inspirals (EMRIs) due to an infalling Light
Compact Object (LCO) onto a generic class of stationary and axi-symmetric
massive compact objects (MCO - with or without a horizon). Using the quadrupole
hybrid formalism we obtain a master formula for the evolution of the radius of
the LCO and f... | [
{
"created": "Wed, 3 May 2023 18:00:00 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Jun 2023 08:26:03 GMT",
"version": "v2"
}
] | 2023-06-29 | [
[
"Delgado",
"Jorge F. M.",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
]
] | We study extreme mass ratio inspirals (EMRIs) due to an infalling Light Compact Object (LCO) onto a generic class of stationary and axi-symmetric massive compact objects (MCO - with or without a horizon). Using the quadrupole hybrid formalism we obtain a master formula for the evolution of the radius of the LCO and fin... |
gr-qc/0103047 | Claus Laemmerzahl | Claus L\"ammerzahl | A Characterisation of the Weylian Structure of Space-Time by Means of
Low Velocity Tests | to appear in Gen.Rel.Grav | Gen.Rel.Grav. 33 (2001) 815-831 | 10.1023/A:1010203823865 | null | gr-qc | null | The compatibility axiom in Ehlers, Pirani and Schild's (EPS) constructive
axiomatics of the space-time geometry that uses light rays and freely falling
particles with high velocity, is replaced by several constructions with low
velocity particles only. For that purpose we describe in a space-time with a
conformal str... | [
{
"created": "Wed, 14 Mar 2001 12:46:16 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Lämmerzahl",
"Claus",
""
]
] | The compatibility axiom in Ehlers, Pirani and Schild's (EPS) constructive axiomatics of the space-time geometry that uses light rays and freely falling particles with high velocity, is replaced by several constructions with low velocity particles only. For that purpose we describe in a space-time with a conformal struc... |
2009.00629 | Waleska de Medeiros Ms | Waleska P. F. de Medeiros and Daniel M\"uller | On the order reduction | null | de Medeiros, W.P.F., M\"uller, D. On the order reduction. Eur.
Phys. J. C 81, 231 (2021) | 10.1140/epjc/s10052-021-09020-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we present an extension of the technique of the order reduction
to higher perturbative approximations in an iterative fashion. The intention is
also to analyze more carefully the conditions for the validity of the order
reduction technique. With this in mind, a few simple situations in which the
iterativ... | [
{
"created": "Tue, 1 Sep 2020 18:01:39 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Apr 2021 14:43:41 GMT",
"version": "v2"
}
] | 2021-04-05 | [
[
"de Medeiros",
"Waleska P. F.",
""
],
[
"Müller",
"Daniel",
""
]
] | In this work we present an extension of the technique of the order reduction to higher perturbative approximations in an iterative fashion. The intention is also to analyze more carefully the conditions for the validity of the order reduction technique. With this in mind, a few simple situations in which the iterative ... |
1912.05553 | Matthew Reece | Dan Stefan Eniceicu and Matthew Reece | Quasinormal Modes of Charged Fields in Reissner-Nordstrom Backgrounds by
Borel-Pade Summation of Bender-Wu Series | v2: 31 pages, 12 figures. Added discussion of boundary conditions.
Published in Phys Rev D | Phys. Rev. D 102, 044015 (2020) | 10.1103/PhysRevD.102.044015 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend recent work of Hatsuda on the computation of quasinormal mode
frequencies via analytic continuation of bound state energies and Borel-Pade
resummation of the Bender-Wu perturbation series to the case of charged fields
in the background of Reissner-Nordstrom black holes. We compare the quasinormal
mode frequ... | [
{
"created": "Wed, 11 Dec 2019 19:00:01 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Aug 2020 11:24:31 GMT",
"version": "v2"
}
] | 2020-08-11 | [
[
"Eniceicu",
"Dan Stefan",
""
],
[
"Reece",
"Matthew",
""
]
] | We extend recent work of Hatsuda on the computation of quasinormal mode frequencies via analytic continuation of bound state energies and Borel-Pade resummation of the Bender-Wu perturbation series to the case of charged fields in the background of Reissner-Nordstrom black holes. We compare the quasinormal mode frequen... |
1612.02480 | Armando Meza Gaxiola | Armando Meza Gaxiola, Juan Antonio Nieto Garcia and Edgar Alejandro
Leon Espinoza | Qubits and STU Black Holes with Eight Electric and Magnetic Charges | 23 pages and 0 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we consider a STU black-hole model containing eight magnetic
and eight electric charges ((8+8)-signature). We show that such model admits an
extremal black holes solution in which (8+8)-signature can be associated with
the entropy via the Cayley's hyperdeterminant.
| [
{
"created": "Wed, 7 Dec 2016 23:11:06 GMT",
"version": "v1"
}
] | 2016-12-09 | [
[
"Gaxiola",
"Armando Meza",
""
],
[
"Garcia",
"Juan Antonio Nieto",
""
],
[
"Espinoza",
"Edgar Alejandro Leon",
""
]
] | In this work, we consider a STU black-hole model containing eight magnetic and eight electric charges ((8+8)-signature). We show that such model admits an extremal black holes solution in which (8+8)-signature can be associated with the entropy via the Cayley's hyperdeterminant. |
2102.03891 | Slava G. Turyshev | Slava G. Turyshev, Viktor T. Toth | Diffraction of electromagnetic waves by an extended gravitational lens | 36 pages, 6 figures. arXiv admin note: text overlap with
arXiv:1810.06627 | Phys. Rev. D 103, 064076 (2021) | 10.1103/PhysRevD.103.064076 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We continue our study of the optical properties of the solar gravitational
lens (SGL). Taking the next step beyond representing it as an idealized
monopole, we now characterize the gravitational field of the Sun using an
infinite series of multipole moments. We consider the propagation of
electromagnetic (EM) waves i... | [
{
"created": "Sun, 7 Feb 2021 19:23:55 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Mar 2021 05:11:19 GMT",
"version": "v2"
}
] | 2021-03-30 | [
[
"Turyshev",
"Slava G.",
""
],
[
"Toth",
"Viktor T.",
""
]
] | We continue our study of the optical properties of the solar gravitational lens (SGL). Taking the next step beyond representing it as an idealized monopole, we now characterize the gravitational field of the Sun using an infinite series of multipole moments. We consider the propagation of electromagnetic (EM) waves in ... |
1007.4215 | Timothy Adamo | T.M. Adamo and E.T. Newman | The Generalized Good Cut Equation | 12 pages | Class.Quant.Grav.27:245004,2010 | 10.1088/0264-9381/27/24/245004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The properties of null geodesic congruences (NGCs) in Lorentzian manifolds
are a topic of considerable importance. More specifically NGCs with the special
property of being shear-free or asymptotically shear-free (as either infinity
or a horizon is approached) have received a great deal of recent attention for
a vari... | [
{
"created": "Fri, 23 Jul 2010 20:58:45 GMT",
"version": "v1"
}
] | 2010-11-23 | [
[
"Adamo",
"T. M.",
""
],
[
"Newman",
"E. T.",
""
]
] | The properties of null geodesic congruences (NGCs) in Lorentzian manifolds are a topic of considerable importance. More specifically NGCs with the special property of being shear-free or asymptotically shear-free (as either infinity or a horizon is approached) have received a great deal of recent attention for a variet... |
gr-qc/0608006 | Dr. Roman Schnabel | A. Bunkowski, O. Burmeister, D. Friedrich, K. Danzmann, and R.
Schnabel | High reflectivity grating waveguide coatings for 1064nm | null | Class.Quant.Grav.23:7297-7304,2006 | 10.1088/0264-9381/23/24/007 | null | gr-qc | null | We propose thin single-layer grating waveguide structures to be used as
high-reflectivity, but low thermal noise, alternative to conventional coatings
for gravitational wave detector test mass mirrors. Grating waveguide (GWG)
coatings can show a reflectivity of up to 100% with an overall thickness of
less than a wave... | [
{
"created": "Tue, 1 Aug 2006 10:26:54 GMT",
"version": "v1"
}
] | 2010-01-05 | [
[
"Bunkowski",
"A.",
""
],
[
"Burmeister",
"O.",
""
],
[
"Friedrich",
"D.",
""
],
[
"Danzmann",
"K.",
""
],
[
"Schnabel",
"R.",
""
]
] | We propose thin single-layer grating waveguide structures to be used as high-reflectivity, but low thermal noise, alternative to conventional coatings for gravitational wave detector test mass mirrors. Grating waveguide (GWG) coatings can show a reflectivity of up to 100% with an overall thickness of less than a wavele... |
gr-qc/0007033 | Lior M. Burko | Leor Barack (Technion) and Lior M. Burko (Caltech) | Radiation-reaction force on a particle plunging into a black hole | 4 pages, 4 Encapsulated PostScript figures, RevTeX, submitted to
Phys. Rev. D | Phys.Rev. D62 (2000) 084040 | 10.1103/PhysRevD.62.084040 | null | gr-qc | null | We calculate the self force acting on a scalar particle which is falling
radially into a Schwarzschild black hole. We treat the particle's self-field as
a linear perturbation over the fixed Schwarzschild background. The force is
calculated by numerically solving the appropriate wave equation for each mode
of the fiel... | [
{
"created": "Sat, 15 Jul 2000 18:34:42 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Barack",
"Leor",
"",
"Technion"
],
[
"Burko",
"Lior M.",
"",
"Caltech"
]
] | We calculate the self force acting on a scalar particle which is falling radially into a Schwarzschild black hole. We treat the particle's self-field as a linear perturbation over the fixed Schwarzschild background. The force is calculated by numerically solving the appropriate wave equation for each mode of the field ... |
1006.5681 | Richard Woodard | N. C. Tsamis (University of Crete), Aggelos Tzetzias (University of
Crete) and R. P. Woodard (University of Florida) | Stochastic Samples versus Vacuum Expectation Values in Cosmology | 15 pages, no figures, uses LaTeX2e | JCAP 1009:016,2010 | 10.1088/1475-7516/2010/09/016 | CCTP-10-09, UFIFT-QG-10-07 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Particle theorists typically use expectation values to study the quantum
back-reaction on inflation, whereas many cosmologists stress the stochastic
nature of the process. While expectation values certainly give misleading
results for some things, such as the stress tensor, we argue that operators
exist for which the... | [
{
"created": "Tue, 29 Jun 2010 17:14:47 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Tsamis",
"N. C.",
"",
"University of Crete"
],
[
"Tzetzias",
"Aggelos",
"",
"University of\n Crete"
],
[
"Woodard",
"R. P.",
"",
"University of Florida"
]
] | Particle theorists typically use expectation values to study the quantum back-reaction on inflation, whereas many cosmologists stress the stochastic nature of the process. While expectation values certainly give misleading results for some things, such as the stress tensor, we argue that operators exist for which there... |
0811.3006 | Yosef Zlochower | Manuela Campanelli, Carlos O. Lousto, Yosef Zlochower | Algebraic Classification of Numerical Spacetimes and Black-Hole-Binary
Remnants | published version | Phys.Rev.D79:084012,2009 | 10.1103/PhysRevD.79.084012 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we develop a technique for determining the algebraic
classification of a numerical spacetime, possibly resulting from a generic
black-hole-binary merger, using the Newman-Penrose Weyl scalars. We demonstrate
these techniques for a test case involving a close binary with arbitrarily
oriented spins and un... | [
{
"created": "Tue, 18 Nov 2008 21:25:48 GMT",
"version": "v1"
},
{
"created": "Thu, 7 May 2009 22:11:23 GMT",
"version": "v2"
}
] | 2015-05-13 | [
[
"Campanelli",
"Manuela",
""
],
[
"Lousto",
"Carlos O.",
""
],
[
"Zlochower",
"Yosef",
""
]
] | In this paper we develop a technique for determining the algebraic classification of a numerical spacetime, possibly resulting from a generic black-hole-binary merger, using the Newman-Penrose Weyl scalars. We demonstrate these techniques for a test case involving a close binary with arbitrarily oriented spins and uneq... |
1703.01277 | Leandro A. Oliveira | Leandro A. Oliveira, Vitor Cardoso, Lu\'is C. B. Crispino | Quasinormal modes of the polytropic hydrodynamic vortex | 11 pages, 3 figures, 5 tables | Phys. Rev. D 92, 024033 (2015) | 10.1103/PhysRevD.92.024033 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Analogue systems are a powerful instrument to investigate and understand in a
controlled setting many general-relativistic effects. Here, we focus on
superradiant-triggered instabilities and quasi-normal modes. We consider a
compressible hydrodynamic vortex characterized by a polytropic equation of
state, the {\it po... | [
{
"created": "Fri, 3 Mar 2017 18:20:34 GMT",
"version": "v1"
}
] | 2017-03-06 | [
[
"Oliveira",
"Leandro A.",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Crispino",
"Luís C. B.",
""
]
] | Analogue systems are a powerful instrument to investigate and understand in a controlled setting many general-relativistic effects. Here, we focus on superradiant-triggered instabilities and quasi-normal modes. We consider a compressible hydrodynamic vortex characterized by a polytropic equation of state, the {\it poly... |
1507.02802 | Laura Bernard | Laura Bernard, Luc Blanchet, Lavinia Heisenberg | Bimetric gravity and dark matter | 9 pages, contribution to the proceedings of the 50th Rencontres de
Moriond, "Gravitation: 100 years after GR" | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review some recent proposals for relativistic models of dark matter in the
context of bimetric gravity. The aim is to solve the problems of cold dark
matter (CDM) at galactic scales, and to reproduce the phenomenology of the
modified Newtonian dynamics (MOND), while still being in agreement with the
standard cosmo... | [
{
"created": "Fri, 10 Jul 2015 08:15:22 GMT",
"version": "v1"
}
] | 2015-07-13 | [
[
"Bernard",
"Laura",
""
],
[
"Blanchet",
"Luc",
""
],
[
"Heisenberg",
"Lavinia",
""
]
] | We review some recent proposals for relativistic models of dark matter in the context of bimetric gravity. The aim is to solve the problems of cold dark matter (CDM) at galactic scales, and to reproduce the phenomenology of the modified Newtonian dynamics (MOND), while still being in agreement with the standard cosmolo... |
0707.1945 | Ozay Gurtug | Ozay Gurtug and Mustafa Halilsoy | Effect of NUT parameter on the analytic extension of the Cauchy horizon
that develop in colliding wave spacetimes | 26 pages. 3 ps figures | IJMPA, 24 (2009) 3171. | 10.1142/S0217751X09044243 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Cauchy horizon forming colliding wave solution due to Chandrasekhar and
Xanthopoulos (CX) has been generalized by inclusion of the NUT (Newman - Unti -
Tamburino) parameter. This is done by transforming the part of the inner
horizon region of a Kerr-Newman-NUT black hole into the space of colliding
waves. By taki... | [
{
"created": "Fri, 13 Jul 2007 09:16:11 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Dec 2008 02:59:41 GMT",
"version": "v2"
}
] | 2015-05-13 | [
[
"Gurtug",
"Ozay",
""
],
[
"Halilsoy",
"Mustafa",
""
]
] | The Cauchy horizon forming colliding wave solution due to Chandrasekhar and Xanthopoulos (CX) has been generalized by inclusion of the NUT (Newman - Unti - Tamburino) parameter. This is done by transforming the part of the inner horizon region of a Kerr-Newman-NUT black hole into the space of colliding waves. By taking... |
2308.05440 | Vittorio De Falco Dr | Vittorio De Falco, Salvatore Capozziello | Static and spherically symmetric wormholes in metric-affine theories of
gravity | 10 pages, 1 table; accepted for publication on Phys. Rev. D | Phys. Rev. D, 2023, 108, 104030 | 10.1103/PhysRevD.108.104030 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider static and spherically symmetric wormhole solutions in extended
metric-affine theories of gravity supposing that stability and traversability
of these objects can be achieved by means of the geometric degrees of freedom.
In particular, we consider $f(R)$ metric, $f(T)$ teleparallel, and $f(Q)$
symmetric t... | [
{
"created": "Thu, 10 Aug 2023 08:56:39 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Oct 2023 10:57:20 GMT",
"version": "v2"
}
] | 2023-11-17 | [
[
"De Falco",
"Vittorio",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | We consider static and spherically symmetric wormhole solutions in extended metric-affine theories of gravity supposing that stability and traversability of these objects can be achieved by means of the geometric degrees of freedom. In particular, we consider $f(R)$ metric, $f(T)$ teleparallel, and $f(Q)$ symmetric tel... |
1006.0035 | Ian Morrison | Donald Marolf and Ian A. Morrison | The IR stability of de Sitter: Loop corrections to scalar propagators | To appear in Phys. Rev. D | Phys.Rev.D82:105032,2010 | 10.1103/PhysRevD.82.105032 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute 1-loop corrections to Lorentz-signature de Sitter-invariant
2-point functions defined by the interacting Euclidean vacuum for massive
scalar quantum fields with cubic and quartic interactions. Our results apply to
all masses for which the free Euclidean de Sitter vacuum is well-defined,
including values in... | [
{
"created": "Mon, 31 May 2010 23:39:48 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Jul 2010 01:09:38 GMT",
"version": "v2"
},
{
"created": "Tue, 26 Oct 2010 07:54:10 GMT",
"version": "v3"
}
] | 2010-12-23 | [
[
"Marolf",
"Donald",
""
],
[
"Morrison",
"Ian A.",
""
]
] | We compute 1-loop corrections to Lorentz-signature de Sitter-invariant 2-point functions defined by the interacting Euclidean vacuum for massive scalar quantum fields with cubic and quartic interactions. Our results apply to all masses for which the free Euclidean de Sitter vacuum is well-defined, including values in b... |
1401.8283 | Ramon Herrera | Ramon Herrera | The generalized second law of thermodynamics for the interacting in
$f(T)$ gravity | 16 pages and 3 figures. Astrophys.Space Sci. in press | null | 10.1007/s10509-013-1747-0 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the validity of the generalized second law (GSL) of gravitational
thermodynamics in a non-flat FRW universe containing the interacting in $f(T)$
gravity. We consider that the boundary of the universe to be confined by the
dynamical apparent horizon in FRW universe. In general, we discuss the
effective equati... | [
{
"created": "Fri, 31 Jan 2014 20:25:30 GMT",
"version": "v1"
}
] | 2015-06-18 | [
[
"Herrera",
"Ramon",
""
]
] | We study the validity of the generalized second law (GSL) of gravitational thermodynamics in a non-flat FRW universe containing the interacting in $f(T)$ gravity. We consider that the boundary of the universe to be confined by the dynamical apparent horizon in FRW universe. In general, we discuss the effective equation... |
2106.12432 | Wei-Tou Ni | Wei-Tou Ni | Core Noise Requirements, and GW Sensitivities of AMIGO | revision to match the IJMPD in-press version | International Journal of Modern Physics D Vol. 31, No. 5 (2022)
2250039 (12 pages) | 10.1142/S0218271822500390 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | AMIGO - The Astrodynamical Middle-frequency Interferometric GW
(Gravitation-Wave) Observatory is a first-generation mid-frequency GW mission
bridging the sensitivity gap between the high-frequency GW detectors and
low-frequency space GW detectors. In our previous works, we have obtained
appropriate heliocentric orbit... | [
{
"created": "Wed, 23 Jun 2021 14:35:53 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Nov 2021 02:37:24 GMT",
"version": "v2"
},
{
"created": "Wed, 9 Feb 2022 10:15:04 GMT",
"version": "v3"
}
] | 2022-05-10 | [
[
"Ni",
"Wei-Tou",
""
]
] | AMIGO - The Astrodynamical Middle-frequency Interferometric GW (Gravitation-Wave) Observatory is a first-generation mid-frequency GW mission bridging the sensitivity gap between the high-frequency GW detectors and low-frequency space GW detectors. In our previous works, we have obtained appropriate heliocentric orbit f... |
0808.2601 | Carlos Leiva | Carlos Leiva, Joel Saavedra, Jose Villanueva | Geodesic Structure of the Schwarzschild Black Hole in Rainbow Gravity | Version to match the accepted one in MPLA | Mod.Phys.Lett.A24:1443-1451,2009 | 10.1142/S0217732309029983 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the geodesic structure of the Schwarzschild black hole
in rainbow gravity analyzing the behavior of null and time-like geodesic. We
find that the structure of the geodesics essentially does not change when the
semi-classical effects are included. However, we can distinguish different
scenarios ... | [
{
"created": "Tue, 19 Aug 2008 14:29:53 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Aug 2008 22:38:02 GMT",
"version": "v2"
},
{
"created": "Tue, 9 Dec 2008 20:55:06 GMT",
"version": "v3"
}
] | 2009-07-07 | [
[
"Leiva",
"Carlos",
""
],
[
"Saavedra",
"Joel",
""
],
[
"Villanueva",
"Jose",
""
]
] | In this paper we study the geodesic structure of the Schwarzschild black hole in rainbow gravity analyzing the behavior of null and time-like geodesic. We find that the structure of the geodesics essentially does not change when the semi-classical effects are included. However, we can distinguish different scenarios if... |
1008.5059 | Igor Khavkine | Igor Khavkine | Comment on `Hawking radiation from fluctuating black holes' | 12 pages, 1 fig; feynmp, amsrefs | Class.Quant.Grav.28:038001,2011 | 10.1088/0264-9381/28/3/038001 | ITP-UU-10/28, SPIN-10/24 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Takahashi & Soda (2010 Class. Quantum Grav. v27 p175008, arXiv:1005.0286)
have recently considered the effect (at lowest non-trivial order) of dynamical,
quantized gravitational fluctuations on the spectrum of scalar Hawking
radiation from a collapsing Schwarzschild black hole. However, due to an
unfortunate choice o... | [
{
"created": "Mon, 30 Aug 2010 11:46:18 GMT",
"version": "v1"
}
] | 2011-02-01 | [
[
"Khavkine",
"Igor",
""
]
] | Takahashi & Soda (2010 Class. Quantum Grav. v27 p175008, arXiv:1005.0286) have recently considered the effect (at lowest non-trivial order) of dynamical, quantized gravitational fluctuations on the spectrum of scalar Hawking radiation from a collapsing Schwarzschild black hole. However, due to an unfortunate choice of ... |
gr-qc/9901029 | Istvan Racz | Istvan Racz (Yukawa Institute) | On Further Generalization of the Rigidity Theorem for Spacetimes with a
Stationary Event Horizon or a Compact Cauchy Horizon | 25 pages, LaTex, a shortened version, including a new proof for lemma
5.1, the additional case of Einstein-Yang-Mills-Higgs systems is also
covered, to appear in Class. Quant. Grav | Class.Quant.Grav. 17 (2000) 153-178 | 10.1088/0264-9381/17/1/311 | null | gr-qc hep-th | null | A rigidity theorem that applies to smooth electrovac spacetimes which
represent either (A) an asymptotically flat stationary black hole or (B) a
cosmological spacetime with a compact Cauchy horizon ruled by closed null
geodesics was given in a recent work \cite{frw}. Here we enlarge the framework
of the corresponding... | [
{
"created": "Mon, 11 Jan 1999 11:50:17 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Oct 1999 07:59:06 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Racz",
"Istvan",
"",
"Yukawa Institute"
]
] | A rigidity theorem that applies to smooth electrovac spacetimes which represent either (A) an asymptotically flat stationary black hole or (B) a cosmological spacetime with a compact Cauchy horizon ruled by closed null geodesics was given in a recent work \cite{frw}. Here we enlarge the framework of the corresponding i... |
0801.4852 | Enrico Barausse | Enrico Barausse, Thomas P. Sotiriou and John C. Miller | Polytropic spheres in Palatini f(R) gravity | Talk given by EB at the 30th Spanish Relativity Meeting, 10 - 14
September 2007, Tenerife (Spain). Based on arXiv:gr-qc/0703132 and
arXiv:0712.1141 [gr-qc] | EAS Publ.Ser.30:189-192,2008 | 10.1051/eas:0830023 | null | gr-qc | null | We examine static spherically symmetric polytropic spheres in Palatini f(R)
gravity and show that no regular solutions to the field equations exist for
physically relevant cases such as a monatomic isentropic gas or a degenerate
electron gas, thus casting doubt on the validity of Palatini f(R) gravity as an
alternati... | [
{
"created": "Thu, 31 Jan 2008 12:00:17 GMT",
"version": "v1"
}
] | 2011-08-31 | [
[
"Barausse",
"Enrico",
""
],
[
"Sotiriou",
"Thomas P.",
""
],
[
"Miller",
"John C.",
""
]
] | We examine static spherically symmetric polytropic spheres in Palatini f(R) gravity and show that no regular solutions to the field equations exist for physically relevant cases such as a monatomic isentropic gas or a degenerate electron gas, thus casting doubt on the validity of Palatini f(R) gravity as an alternative... |
1911.02190 | Qing-Hua Zhu | Zhe Chang and Qing-Hua Zhu | Black hole shadow in the view of freely falling observers | v1: 21 pages, 6 figures; v2: 31 pages, 11 figures, a revised version
for publishing in JCAP | JCAP06 (2020) 055 | 10.1088/1475-7516/2020/06/055 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | First sketch of black hole from M87 galaxy was obtained by Event Horizon
Telescope, recently. As appearance of black hole shadow reflects space-time
geometry of black holes, observations of black hole shadow may be a promising
way to test general relativity in strong field regime. In this paper, we focus
on angular r... | [
{
"created": "Wed, 6 Nov 2019 03:52:04 GMT",
"version": "v1"
},
{
"created": "Sat, 27 Jun 2020 06:44:24 GMT",
"version": "v2"
}
] | 2020-06-30 | [
[
"Chang",
"Zhe",
""
],
[
"Zhu",
"Qing-Hua",
""
]
] | First sketch of black hole from M87 galaxy was obtained by Event Horizon Telescope, recently. As appearance of black hole shadow reflects space-time geometry of black holes, observations of black hole shadow may be a promising way to test general relativity in strong field regime. In this paper, we focus on angular rad... |
2404.09672 | Jiale Zhang | Shin'ichi Hirano, Masashi Kimura, Masahide Yamaguchi, Jiale Zhang | Parametrized Black Hole Quasinormal Ringdown Formalism for Higher
Overtones | v2: minor revisions, accepted for publication in Phys. Rev. D. 34
pages, 12 figures. Data available at
https://github.com/JialeZHANG-Phys/pqnm_overtone | Physical Review D, Vol. 110, No. 2, 024015 (2024) | 10.1103/PhysRevD.110.024015 | RUP-24-6 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the parametrized black hole quasinormal ringdown formalism,
which is a robust framework used to analyze quasinormal modes in systems that
closely resemble general relativity, paying particular attention to the higher
overtones. We find that larger deviations from the general relativity case
typically a... | [
{
"created": "Mon, 15 Apr 2024 11:08:37 GMT",
"version": "v1"
},
{
"created": "Thu, 30 May 2024 11:21:31 GMT",
"version": "v2"
}
] | 2024-07-11 | [
[
"Hirano",
"Shin'ichi",
""
],
[
"Kimura",
"Masashi",
""
],
[
"Yamaguchi",
"Masahide",
""
],
[
"Zhang",
"Jiale",
""
]
] | We investigate the parametrized black hole quasinormal ringdown formalism, which is a robust framework used to analyze quasinormal modes in systems that closely resemble general relativity, paying particular attention to the higher overtones. We find that larger deviations from the general relativity case typically app... |
1507.03610 | P. A. Gonzalez | P. A. Gonzalez, Marco Olivares and Yerko Vasquez | Motion of particles on a Four-Dimensional Asymptotically AdS Black Hole
with Scalar Hair | 20 pages and 9 figures. arXiv admin note: text overlap with
arXiv:1309.2161 | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by black hole solutions with matter fields outside their horizon,
we study the effect of these matter fields in the motion of massless and
massive particles. We consider as background a four-dimensional asymptotically
AdS black hole with scalar hair. The geodesics are studied numerically and we
discuss abou... | [
{
"created": "Mon, 13 Jul 2015 20:18:14 GMT",
"version": "v1"
}
] | 2015-07-19 | [
[
"Gonzalez",
"P. A.",
""
],
[
"Olivares",
"Marco",
""
],
[
"Vasquez",
"Yerko",
""
]
] | Motivated by black hole solutions with matter fields outside their horizon, we study the effect of these matter fields in the motion of massless and massive particles. We consider as background a four-dimensional asymptotically AdS black hole with scalar hair. The geodesics are studied numerically and we discuss about ... |
1412.8757 | Majd Abdelqader | Majd Abdelqader, Kayll Lake | Invariant characterization of the Kerr spacetime: Locating the horizon
and measuring the mass and spin of rotating black holes using curvature
invariants | 9 pages, 2 figures, typos fixed and other minor changes made to match
the published version | Phys. Rev. D 91, 084017 (2015) | 10.1103/PhysRevD.91.084017 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide an invariant characterization of the physical properties of the
Kerr spacetime. We introduce two dimensionless invariants, constructed out of
some known curvature invariants, that act as detectors for the event horizon
and ergosurface of the Kerr black hole. We also show that the mass and angular
momentum ... | [
{
"created": "Tue, 30 Dec 2014 20:40:46 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Feb 2015 21:14:58 GMT",
"version": "v2"
},
{
"created": "Wed, 18 Mar 2015 19:57:42 GMT",
"version": "v3"
},
{
"created": "Mon, 13 Apr 2015 03:50:36 GMT",
"version": "v4"
}
] | 2015-04-14 | [
[
"Abdelqader",
"Majd",
""
],
[
"Lake",
"Kayll",
""
]
] | We provide an invariant characterization of the physical properties of the Kerr spacetime. We introduce two dimensionless invariants, constructed out of some known curvature invariants, that act as detectors for the event horizon and ergosurface of the Kerr black hole. We also show that the mass and angular momentum ca... |
gr-qc/9711074 | Li-Xin Li | Li-Xin Li and J. Richard Gott, III | A Self-Consistent Vacuum for Misner Space and the Chronology Protection
Conjecture | 5 pages, received September 5, 1997, with a note added November 24,
1997 | Phys.Rev.Lett. 80 (1998) 2980 | 10.1103/PhysRevLett.80.2980 | null | gr-qc astro-ph | null | In this paper we find a self-consistent vacuum for Misner space. For this
"adapted" Rindler vacuum the renormalized stress-energy tensor is zero
throughout the Misner space. A point-like particle detector traveling on a
timelike geodesic in a Misner space with this vacuum detects nothing. Misner
space with this vacuu... | [
{
"created": "Tue, 25 Nov 1997 20:57:43 GMT",
"version": "v1"
}
] | 2012-08-27 | [
[
"Li",
"Li-Xin",
""
],
[
"Gott",
"J. Richard",
""
],
[
"III",
"",
""
]
] | In this paper we find a self-consistent vacuum for Misner space. For this "adapted" Rindler vacuum the renormalized stress-energy tensor is zero throughout the Misner space. A point-like particle detector traveling on a timelike geodesic in a Misner space with this vacuum detects nothing. Misner space with this vacuum ... |
gr-qc/9510048 | Sukanta Bose | Sukanta Bose (1), Jorma Louko (2), Leonard Parker (1), and Yoav Peleg
(1) ((1) University of Wisconsin-Milwaukee, (2) University of Maryland,
College Park) | Hamiltonian thermodynamics of two-dimensional vacuum dilatonic black
holes | 20 pages, REVTEX. Added a discussion on the boundary action and
boundary terms in Sec. IIIA. Minor changes in Acknowledgements and References | Phys.Rev. D53 (1996) 5708-5716 | 10.1103/PhysRevD.53.5708 | WISC-MILW-95-TH-19 and PP96-36 | gr-qc hep-th | null | We consider the Hamiltonian dynamics and thermodynamics of the
two-dimensional vacuum dilatonic black hole in the presence of a timelike
boundary with a fixed value of the dilaton field. A~canonical transformation,
previously developed by Varadarajan and Lau, allows a reduction of the
classical dynamics into an uncon... | [
{
"created": "Tue, 24 Oct 1995 18:42:44 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Jun 1996 19:20:31 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Bose",
"Sukanta",
""
],
[
"Louko",
"Jorma",
""
],
[
"Parker",
"Leonard",
""
],
[
"Peleg",
"Yoav",
""
]
] | We consider the Hamiltonian dynamics and thermodynamics of the two-dimensional vacuum dilatonic black hole in the presence of a timelike boundary with a fixed value of the dilaton field. A~canonical transformation, previously developed by Varadarajan and Lau, allows a reduction of the classical dynamics into an unconst... |
gr-qc/9402010 | null | Karl-Peter Marzlin | On the physical meaning of Fermi coordinates | 11 pages, KONS-RGKU-94/02 (Latex) | Gen.Rel.Grav. 26 (1994) 619 | 10.1007/BF02108003 | null | gr-qc | null | (Some Latex problems should be removed in this version) Fermi coordinates
(FC) are supposed to be the natural extension of Cartesian coordinates for an
arbitrary moving observer in curved space-time. Since their construction cannot
be done on the whole space and even not in the whole past of the observer we
examine w... | [
{
"created": "Thu, 3 Feb 1994 12:38:25 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Feb 1994 12:22:28 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Marzlin",
"Karl-Peter",
""
]
] | (Some Latex problems should be removed in this version) Fermi coordinates (FC) are supposed to be the natural extension of Cartesian coordinates for an arbitrary moving observer in curved space-time. Since their construction cannot be done on the whole space and even not in the whole past of the observer we examine whi... |
2405.16163 | Salvatore Capozziello | Salvatore Capozziello and Maurizio Capriolo | Gravitational waves in $f(Q)$ non-metric gravity without gauge fixing | 22 pages, to appear in Phys.Dark Univ | null | null | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | We investigate the polarization modes of gravitational waves in $f(Q)$
non-metric gravity without gauge fixing. The main result of this study is that
no further scalar mode appears more than the two standard plus and cross
transverse polarizations of massless tensor gravitational radiation, typical of
General Relativ... | [
{
"created": "Sat, 25 May 2024 10:14:43 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Jun 2024 07:57:51 GMT",
"version": "v2"
}
] | 2024-06-11 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Capriolo",
"Maurizio",
""
]
] | We investigate the polarization modes of gravitational waves in $f(Q)$ non-metric gravity without gauge fixing. The main result of this study is that no further scalar mode appears more than the two standard plus and cross transverse polarizations of massless tensor gravitational radiation, typical of General Relativit... |
1110.5485 | Farhad Darabi | F. Darabi | Classical Euclidean wormhole solutions in Palatini $f(\tilde{R})$
cosmology | 11 pages | Theoretical and Mathematical Physics, 173(3) 1734 (2012) | 10.1007/s11232-012-0144-0 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the classical Euclidean wormholes in the context of extended
theories of gravity. With no loss of generality, we use the dynamical
equivalence between $f(\tilde{R})$ gravity and scalar-tensor theories to
construct a point-like Lagrangian in the flat FRW space time. We first show the
dynamical equivalence bet... | [
{
"created": "Tue, 25 Oct 2011 12:50:53 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Dec 2012 16:01:13 GMT",
"version": "v2"
}
] | 2015-05-30 | [
[
"Darabi",
"F.",
""
]
] | We study the classical Euclidean wormholes in the context of extended theories of gravity. With no loss of generality, we use the dynamical equivalence between $f(\tilde{R})$ gravity and scalar-tensor theories to construct a point-like Lagrangian in the flat FRW space time. We first show the dynamical equivalence betwe... |
1705.07620 | Luis Acedo Rodr\'iguez | L. Acedo | Modal series expansions for plane gravitational waves | 14 pages, 4 figures | Gravitation and Cosmology (2016), Vol. 22, Issue 3, pp. 251-257 | 10.1134/S0202289316030026 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Propagation of gravitational disturbances at the speed of light is one of the
key predictions of the General Theory of Relativity. This result is now backed
indirectly by the observations of the behaviour of the ephemeris of binary
pulsar systems. These new results have in- creased the interest in the
mathematical th... | [
{
"created": "Mon, 22 May 2017 09:12:39 GMT",
"version": "v1"
}
] | 2017-05-23 | [
[
"Acedo",
"L.",
""
]
] | Propagation of gravitational disturbances at the speed of light is one of the key predictions of the General Theory of Relativity. This result is now backed indirectly by the observations of the behaviour of the ephemeris of binary pulsar systems. These new results have in- creased the interest in the mathematical theo... |
1809.05144 | Jordan Keller | Pei-Ken Hung, Jordan Keller, and Mu-Tao Wang | Linear Stability of Higher Dimensional Schwarzschild Spacetimes: Decay
of Master Quantities | 71 pages | null | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study solutions to the linearized vacuum Einstein equations
centered at higher-dimensional Schwarzschild met- rics. We employ Hodge
decomposition to split solutions into scalar, co-vector, and two-tensor pieces;
the first two portions respectively cor- respond to the closed and co-closed,
or polar a... | [
{
"created": "Thu, 13 Sep 2018 19:07:44 GMT",
"version": "v1"
}
] | 2018-09-17 | [
[
"Hung",
"Pei-Ken",
""
],
[
"Keller",
"Jordan",
""
],
[
"Wang",
"Mu-Tao",
""
]
] | In this paper, we study solutions to the linearized vacuum Einstein equations centered at higher-dimensional Schwarzschild met- rics. We employ Hodge decomposition to split solutions into scalar, co-vector, and two-tensor pieces; the first two portions respectively cor- respond to the closed and co-closed, or polar and... |
gr-qc/0502099 | Francisco Lobo | Francisco S. N. Lobo | Phantom energy traversable wormholes | 9 pages, Revtex4. V2: Considerable comments and references added, no
physics changes, now 10 pages. Accepted for publication in Physical Review D | Phys.Rev.D71:084011,2005 | 10.1103/PhysRevD.71.084011 | null | gr-qc astro-ph hep-th | null | It has been suggested that a possible candidate for the present accelerated
expansion of the Universe is ''phantom energy''. The latter possesses an
equation of state of the form $\omega\equiv p/\rho<-1$, consequently violating
the null energy condition. As this is the fundamental ingredient to sustain
traversable wo... | [
{
"created": "Wed, 23 Feb 2005 16:35:20 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Apr 2005 13:25:36 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Lobo",
"Francisco S. N.",
""
]
] | It has been suggested that a possible candidate for the present accelerated expansion of the Universe is ''phantom energy''. The latter possesses an equation of state of the form $\omega\equiv p/\rho<-1$, consequently violating the null energy condition. As this is the fundamental ingredient to sustain traversable worm... |
1212.1867 | Hafiza Rizwana Kausar | Hafiza Rizwana Kausar | Effects of CDTT Model on the Dynamical Instability of Cylindrically
Symmetric Collapsing Stars | 21 pages, no figure, Accepted for publication in JCAP | JCAP01(2013)007 | 10.1088/1475-7516/2013/01/007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We assume cylindrically symmetric stars which begin collapsing by dissipating
energy in the form of heat flux. We wish to study the effects of
Carroll-Duvvuri-Trodden-Turner (CDTT) model, $f(R)=R+\sigma\frac{\mu^4}{R}$, on
the range of dynamical instability. For this purpose, perturbation scheme is
applied to all the... | [
{
"created": "Sun, 9 Dec 2012 08:36:33 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Kausar",
"Hafiza Rizwana",
""
]
] | We assume cylindrically symmetric stars which begin collapsing by dissipating energy in the form of heat flux. We wish to study the effects of Carroll-Duvvuri-Trodden-Turner (CDTT) model, $f(R)=R+\sigma\frac{\mu^4}{R}$, on the range of dynamical instability. For this purpose, perturbation scheme is applied to all the m... |
gr-qc/0009073 | Lars Samuelsson | M. Karlovini, K. Rosquist and L. Samuelsson | Ultracompact stars with multiple necks | 5 pages, 2 figures | Mod.Phys.Lett. A17 (2002) 197-204 | 10.1142/S0217732302006400 | USITP 2000-13 | gr-qc astro-ph | null | We discuss ultracompact stellar objects which have multiple necks in their
optical geometry. There are in fact physically reasonable equations of state
for which the number of necks can be arbitrarily large. The proofs of these
statements rely on a recent regularized formulation of the field equations for
static sphe... | [
{
"created": "Thu, 21 Sep 2000 11:49:29 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Karlovini",
"M.",
""
],
[
"Rosquist",
"K.",
""
],
[
"Samuelsson",
"L.",
""
]
] | We discuss ultracompact stellar objects which have multiple necks in their optical geometry. There are in fact physically reasonable equations of state for which the number of necks can be arbitrarily large. The proofs of these statements rely on a recent regularized formulation of the field equations for static spheri... |
2112.10910 | Oscar Lasso Andino | Marcos A. Arga\~naraz, Oscar Lasso Andino | The generalized Jacobi metric | 16 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new approach to the Jacobi metric formalism for Lorentzian
spacetimes. We define a new Jacobi metric that inherits the spacetime, null and
timelike geodesic equations for asymptotically flat spacetimes including the
stationary ones. The method provides a way for finding a reduced 2-dimensional
Jacobi met... | [
{
"created": "Mon, 20 Dec 2021 23:36:28 GMT",
"version": "v1"
}
] | 2021-12-22 | [
[
"Argañaraz",
"Marcos A.",
""
],
[
"Andino",
"Oscar Lasso",
""
]
] | We present a new approach to the Jacobi metric formalism for Lorentzian spacetimes. We define a new Jacobi metric that inherits the spacetime, null and timelike geodesic equations for asymptotically flat spacetimes including the stationary ones. The method provides a way for finding a reduced 2-dimensional Jacobi metri... |
gr-qc/0504114 | Carsten Gundlach | Carsten Gundlach, Jose M. Martin-Garcia, Gioel Calabrese, Ian Hinder | Constraint damping in the Z4 formulation and harmonic gauge | Extended derivation of damping mechanism | Class.Quant.Grav. 22 (2005) 3767-3774 | 10.1088/0264-9381/22/17/025 | null | gr-qc | null | We show that by adding suitable lower-order terms to the Z4 formulation of
the Einstein equations, all constraint violations except constant modes are
damped. This makes the Z4 formulation a particularly simple example of a
lambda-system as suggested by Brodbeck et al. We also show that the Einstein
equations in harm... | [
{
"created": "Fri, 22 Apr 2005 20:34:46 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Jul 2005 07:53:59 GMT",
"version": "v2"
}
] | 2020-05-13 | [
[
"Gundlach",
"Carsten",
""
],
[
"Martin-Garcia",
"Jose M.",
""
],
[
"Calabrese",
"Gioel",
""
],
[
"Hinder",
"Ian",
""
]
] | We show that by adding suitable lower-order terms to the Z4 formulation of the Einstein equations, all constraint violations except constant modes are damped. This makes the Z4 formulation a particularly simple example of a lambda-system as suggested by Brodbeck et al. We also show that the Einstein equations in harmon... |
gr-qc/0506088 | Petros Wallden Mr | Ioannis Raptis, Petros Wallden and Roman R. Zapatrin | Spacetime topology from the tomographic histories approach I:
Non-relativistic Case | 19 pages, slight chang in title and corrected typos in second
version. To appear to a special proceedings issue (Glafka 2004) of the
International Journal of Theoretical Physics | Int.J.Theor.Phys. 45 (2006) 1595-1617 | 10.1007/s10773-006-9138-8 | null | gr-qc | null | The tomographic histories approach is presented. As an inverse problem, we
recover in an operational way the effective topology of the extended
configuration space of a system. This means that from a series of experiments
we get a set of points corresponding to events. The difference between
effective and actual topo... | [
{
"created": "Thu, 16 Jun 2005 13:26:05 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Jul 2006 16:34:20 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Raptis",
"Ioannis",
""
],
[
"Wallden",
"Petros",
""
],
[
"Zapatrin",
"Roman R.",
""
]
] | The tomographic histories approach is presented. As an inverse problem, we recover in an operational way the effective topology of the extended configuration space of a system. This means that from a series of experiments we get a set of points corresponding to events. The difference between effective and actual topolo... |
1809.09274 | Cuauhtemoc Campuzano | Abigail Alvarez, Cuauhtemoc Campuzano, V\'ictor C\'ardenas and
Efra\'in Rojas | Stealth's cosmologies | 16 pages, 10 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a novel approach to construct cosmological models endowed with a
particular scalar field, the stealth. The model is constructed by studying a
scalar field no-minimally coupled to the gravitational field with sources; as
sources, we used a perfect fluid and analyzed the simplest case of dust and the
power-l... | [
{
"created": "Tue, 25 Sep 2018 01:09:35 GMT",
"version": "v1"
}
] | 2018-09-26 | [
[
"Alvarez",
"Abigail",
""
],
[
"Campuzano",
"Cuauhtemoc",
""
],
[
"Cárdenas",
"Víctor",
""
],
[
"Rojas",
"Efraín",
""
]
] | We present a novel approach to construct cosmological models endowed with a particular scalar field, the stealth. The model is constructed by studying a scalar field no-minimally coupled to the gravitational field with sources; as sources, we used a perfect fluid and analyzed the simplest case of dust and the power-law... |
gr-qc/0009017 | Anupam Mazumdar | Luis E. Mendes and Anupam Mazumdar | Brans-Dicke brane cosmology | 8 pages. Major revision. Conclusions where changed | Phys.Lett. B501 (2001) 249-256 | 10.1016/S0370-2693(01)00117-4 | null | gr-qc astro-ph hep-ph hep-th | null | A five dimensional brane cosmology with non-minimally coupled scalar field to
gravity has been considered in a Jordan-Brans-Dicke frame. We derive an
effective four dimensional field equations on a 3+1 dimensional brane where the
fifth dimension has been assumed to have an orbifold symmetry. We have noticed
that the ... | [
{
"created": "Wed, 6 Sep 2000 20:25:03 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Nov 2000 13:41:03 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Nov 2000 15:45:22 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Mendes",
"Luis E.",
""
],
[
"Mazumdar",
"Anupam",
""
]
] | A five dimensional brane cosmology with non-minimally coupled scalar field to gravity has been considered in a Jordan-Brans-Dicke frame. We derive an effective four dimensional field equations on a 3+1 dimensional brane where the fifth dimension has been assumed to have an orbifold symmetry. We have noticed that the ev... |
1602.02131 | Jean Pierre Pansart | Jean Pierre Pansart (IRFU) | A Clifford algebra gauge invariant Lagrangian for gravity. Part 2 :
compatibility with General Relativity tests | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gauge fields associated to the Dirac matrix algebra used with the standard
quadratic gauge field Lagrangian lead to an extended gravitational Lagrangian
which includes the Einstein-Hilbert one, plus quadratic, cosmological constant
and torsion terms. This note looks at three cases : the static central
symmetric field... | [
{
"created": "Fri, 5 Feb 2016 19:37:13 GMT",
"version": "v1"
}
] | 2016-02-08 | [
[
"Pansart",
"Jean Pierre",
"",
"IRFU"
]
] | Gauge fields associated to the Dirac matrix algebra used with the standard quadratic gauge field Lagrangian lead to an extended gravitational Lagrangian which includes the Einstein-Hilbert one, plus quadratic, cosmological constant and torsion terms. This note looks at three cases : the static central symmetric field, ... |
1402.3581 | Katerina Chatziioannou | Katerina Chatziioannou, Neil Cornish, Antoine Klein, Nicolas Yunes | Spin-Precession: Breaking the Black Hole--Neutron Star Degeneracy | 5 pages, 4 figures, published version, major modifications | ApJ, 798, L17 (2015) | 10.1088/2041-8205/798/1/L17 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Mergers of compact stellar remnant are prime targets for the LIGO/Virgo
gravitational wave detectors. One hopes that the gravitational wave signals
from these merger events can be used to study the mass and spin distribution of
stellar remnants, and provide information about black hole horizons and the
material prope... | [
{
"created": "Fri, 14 Feb 2014 20:48:48 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Dec 2014 02:21:38 GMT",
"version": "v2"
}
] | 2014-12-19 | [
[
"Chatziioannou",
"Katerina",
""
],
[
"Cornish",
"Neil",
""
],
[
"Klein",
"Antoine",
""
],
[
"Yunes",
"Nicolas",
""
]
] | Mergers of compact stellar remnant are prime targets for the LIGO/Virgo gravitational wave detectors. One hopes that the gravitational wave signals from these merger events can be used to study the mass and spin distribution of stellar remnants, and provide information about black hole horizons and the material propert... |
1309.3045 | Artymowski Michal | Michal Artymowski, Yonnge Ma, Xiangdong Zhang | A comparison between Jordan and Einstein frames of Brans-Dicke gravity a
la loop quantum cosmology | 13 pages, 2 figures | null | 10.1103/PhysRevD.88.104010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that the Jordan and Einstein frames are equivalent to each
other in classical Brans-Dicke theory, provided that one and the same metric is
employed for the physical space-time. Nevertheless, it is shown in this paper
by cosmological models that the loop quantisation in the two different frames
will l... | [
{
"created": "Thu, 12 Sep 2013 06:44:46 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Artymowski",
"Michal",
""
],
[
"Ma",
"Yonnge",
""
],
[
"Zhang",
"Xiangdong",
""
]
] | It is well known that the Jordan and Einstein frames are equivalent to each other in classical Brans-Dicke theory, provided that one and the same metric is employed for the physical space-time. Nevertheless, it is shown in this paper by cosmological models that the loop quantisation in the two different frames will lea... |
gr-qc/9701046 | David Hartley | David Hartley, Robin W. Tucker, Philip A. Tuckey, Tevian Dray | Tensor distributions on signature-changing space-times | 9 pages, LaTeX 2.09 | Gen.Rel.Grav. 32 (2000) 491-503 | 10.1023/A:1001928401229 | ADP 96-41/M49 | gr-qc | null | Irregularities in the metric tensor of a signature-changing space-time
suggest that field equations on such space-times might be regarded as
distributional. We review the formalism of tensor distributions on
differentiable manifolds, and examine to what extent rigorous meaning can be
given to field equations in the p... | [
{
"created": "Tue, 21 Jan 1997 03:42:02 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Hartley",
"David",
""
],
[
"Tucker",
"Robin W.",
""
],
[
"Tuckey",
"Philip A.",
""
],
[
"Dray",
"Tevian",
""
]
] | Irregularities in the metric tensor of a signature-changing space-time suggest that field equations on such space-times might be regarded as distributional. We review the formalism of tensor distributions on differentiable manifolds, and examine to what extent rigorous meaning can be given to field equations in the pre... |
1806.00231 | Masashi Kuniyasu | M. Kuniyasu, K. Nanri, N. Sakai, T. Ohgami, R. Fukushige, S. Koumura | Can we identify massless braneworld black holes by observations? | 9 pages, 10 figures | Phys.Rev.D97(2018)no.10,104063 | 10.1103/PhysRevD.97.104063 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For an extension of the previous work on gravitational lensing by massless
braneworld black holes, we investigate their microlensing phenomena and shadows
and discuss how to distinguish them from standard Schwarzschild black holes and
Ellis wormholes. Microlensing is known as the phenomenon in which luminosity
amplif... | [
{
"created": "Fri, 1 Jun 2018 08:08:12 GMT",
"version": "v1"
}
] | 2018-06-04 | [
[
"Kuniyasu",
"M.",
""
],
[
"Nanri",
"K.",
""
],
[
"Sakai",
"N.",
""
],
[
"Ohgami",
"T.",
""
],
[
"Fukushige",
"R.",
""
],
[
"Koumura",
"S.",
""
]
] | For an extension of the previous work on gravitational lensing by massless braneworld black holes, we investigate their microlensing phenomena and shadows and discuss how to distinguish them from standard Schwarzschild black holes and Ellis wormholes. Microlensing is known as the phenomenon in which luminosity amplific... |
2306.06570 | Yang Huang | Yang Huang, Xiangyun Fu | Refinements and corrections to the deflection angle of light in Kerr-de
Sitter spacetime | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The deflection angle of equatorial light (the light in the equatorial plane)
in Kerr-de Sitter (KdS) spacetime was previously calculated by Sultana
[\href{https://journals.aps.org/prd/abstract/10.1103/PhysRevD.88.042003}{Phys.
Rev. D 88, 042003 (2013)}]. However, we have identified three problems with his
result: (a)... | [
{
"created": "Sun, 11 Jun 2023 03:11:46 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Dec 2023 13:44:37 GMT",
"version": "v2"
}
] | 2023-12-19 | [
[
"Huang",
"Yang",
""
],
[
"Fu",
"Xiangyun",
""
]
] | The deflection angle of equatorial light (the light in the equatorial plane) in Kerr-de Sitter (KdS) spacetime was previously calculated by Sultana [\href{https://journals.aps.org/prd/abstract/10.1103/PhysRevD.88.042003}{Phys. Rev. D 88, 042003 (2013)}]. However, we have identified three problems with his result: (a) O... |
0704.1808 | Neil J. Cornish | Neil J. Cornish and Tyson B. Littenberg | Tests of Bayesian Model Selection Techniques for Gravitational Wave
Astronomy | 11 pages, 6 figures | Phys.Rev.D76:083006,2007 | 10.1103/PhysRevD.76.083006 | null | gr-qc | null | The analysis of gravitational wave data involves many model selection
problems. The most important example is the detection problem of selecting
between the data being consistent with instrument noise alone, or instrument
noise and a gravitational wave signal. The analysis of data from ground based
gravitational wave... | [
{
"created": "Fri, 13 Apr 2007 19:47:48 GMT",
"version": "v1"
},
{
"created": "Sun, 15 Apr 2007 05:54:09 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Nov 2007 18:41:40 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Cornish",
"Neil J.",
""
],
[
"Littenberg",
"Tyson B.",
""
]
] | The analysis of gravitational wave data involves many model selection problems. The most important example is the detection problem of selecting between the data being consistent with instrument noise alone, or instrument noise and a gravitational wave signal. The analysis of data from ground based gravitational wave d... |
1009.2193 | Taichi Kobayashi | Taichi Kobayashi and Akira Tomimatsu | Superradiant scattering of electromagnetic waves emitted from disk
around Kerr black holes | 15 pages, 2 figures, accepted for publication in Physical Review D | Phys.Rev.D82:084026,2010 | 10.1103/PhysRevD.82.084026 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study electromagnetic perturbations around a Kerr black hole surrounded by
a thin disk on the equatorial plane. Our main purpose is to reveal the black
hole superradiance of electromagnetic waves emitted from the disk surface. The
outgoing Kerr-Schild field is used to describe the disk emission, and the
superradia... | [
{
"created": "Sat, 11 Sep 2010 18:37:23 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Kobayashi",
"Taichi",
""
],
[
"Tomimatsu",
"Akira",
""
]
] | We study electromagnetic perturbations around a Kerr black hole surrounded by a thin disk on the equatorial plane. Our main purpose is to reveal the black hole superradiance of electromagnetic waves emitted from the disk surface. The outgoing Kerr-Schild field is used to describe the disk emission, and the superradiant... |
1909.02037 | Carlos Gonz\'alez | Jos\'e Antonio Belinch\'on, Carlos Gonz\'alez, Ram\'on Herrera | Reconstruction and exact solutions for cosmological perturbations from a
generalized gravity theory | 24 pages, 2 figures | null | 10.1007/s10714-020-02685-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scalar and tensor cosmological perturbations during an inflationary universe
scenario in the context of the a generalized gravity theory are studied. This
analyze is carried out considering an ansatz on the variables associated to
scalar and tensor perturbation ($z_s$ and $z_t$) in the Jordan frame. In this
context, ... | [
{
"created": "Wed, 4 Sep 2019 18:24:09 GMT",
"version": "v1"
}
] | 2020-04-22 | [
[
"Belinchón",
"José Antonio",
""
],
[
"González",
"Carlos",
""
],
[
"Herrera",
"Ramón",
""
]
] | Scalar and tensor cosmological perturbations during an inflationary universe scenario in the context of the a generalized gravity theory are studied. This analyze is carried out considering an ansatz on the variables associated to scalar and tensor perturbation ($z_s$ and $z_t$) in the Jordan frame. In this context, we... |
gr-qc/9802062 | Neil G. Turok | S.W. Hawking and Neil Turok | Comment on `Quantum Creation of an Open Universe', by Andrei Linde | 4 pages. Rhetoric reduced. RevTex file | null | null | null | gr-qc astro-ph hep-ph hep-th | null | We comment on Linde's claim that one should change the sign in the action for
a Euclidean instanton in quantum cosmology, resulting in the formula $P \sim
e^{+S}$ for the probability of various classical universes. There are serious
problems with doing so. If one reverses the sign of the action of both the
instanton ... | [
{
"created": "Wed, 25 Feb 1998 18:46:47 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Apr 1998 08:31:08 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Hawking",
"S. W.",
""
],
[
"Turok",
"Neil",
""
]
] | We comment on Linde's claim that one should change the sign in the action for a Euclidean instanton in quantum cosmology, resulting in the formula $P \sim e^{+S}$ for the probability of various classical universes. There are serious problems with doing so. If one reverses the sign of the action of both the instanton an... |
gr-qc/9402011 | Juan Pablo | Wojciech H. Zurek | Preferred Observables, Predictability, Classicality, and the
Environment-Induced Decoherence | to appear in ``The Physical Origins of Time Asymmetry'' ed by J.J.
Halliwell et al., Cambridge Univ. Press. 38 Pages, Preprint LA-UR-92-2051.
Content-Length: 123087 | null | null | null | gr-qc hep-th | null | Selection of the preferred classical set of states in the process of
decoherence -- so important for cosmological considerations -- is discussed
with an emphasis on the role of information loss and entropy. {\it Persistence
of correlations} between the observables of two systems (for instance, a record
and a state of... | [
{
"created": "Thu, 3 Feb 1994 21:40:45 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Zurek",
"Wojciech H.",
""
]
] | Selection of the preferred classical set of states in the process of decoherence -- so important for cosmological considerations -- is discussed with an emphasis on the role of information loss and entropy. {\it Persistence of correlations} between the observables of two systems (for instance, a record and a state of a... |
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