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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1101.3955 | Marc Diaz-Aguilo Mr. | Marc Diaz-Aguilo, Alberto Lobo and Enrique Garc\'ia-Berro | Neural network interpolation of the magnetic field for the LISA
Pathfinder Diagnostics Subsystem | null | Exper.Astron.30:1-21,2011 | 10.1007/s10686-011-9215-8 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | LISA Pathfinder is a science and technology demonstrator of the European
Space Agency within the framework of its LISA mission, which aims to be the
first space-borne gravitational wave observatory. The payload of LISA
Pathfinder is the so-called LISA Technology Package, which is designed to
measure relative accelera... | [
{
"created": "Thu, 20 Jan 2011 16:42:58 GMT",
"version": "v1"
}
] | 2015-03-17 | [
[
"Diaz-Aguilo",
"Marc",
""
],
[
"Lobo",
"Alberto",
""
],
[
"García-Berro",
"Enrique",
""
]
] | LISA Pathfinder is a science and technology demonstrator of the European Space Agency within the framework of its LISA mission, which aims to be the first space-borne gravitational wave observatory. The payload of LISA Pathfinder is the so-called LISA Technology Package, which is designed to measure relative accelerati... |
gr-qc/0404023 | Ian Hinder | Sascha Husa, Ian Hinder and Christiane Lechner | Kranc: a Mathematica application to generate numerical codes for
tensorial evolution equations | 24 pages, 1 figure. Corresponds to journal version | Comput.Phys.Commun.174:983-1004,2006 | 10.1016/j.cpc.2006.02.002 | AEI-2004-031 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a suite of Mathematica-based computer-algebra packages, termed
"Kranc", which comprise a toolbox to convert (tensorial) systems of partial
differential evolution equations to parallelized C or Fortran code. Kranc can
be used as a "rapid prototyping" system for physicists or mathematicians
handling very com... | [
{
"created": "Tue, 6 Apr 2004 14:12:01 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Aug 2010 14:17:23 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Husa",
"Sascha",
""
],
[
"Hinder",
"Ian",
""
],
[
"Lechner",
"Christiane",
""
]
] | We present a suite of Mathematica-based computer-algebra packages, termed "Kranc", which comprise a toolbox to convert (tensorial) systems of partial differential evolution equations to parallelized C or Fortran code. Kranc can be used as a "rapid prototyping" system for physicists or mathematicians handling very compl... |
1906.05155 | Emanuele Berti | Ryan McManus, Emanuele Berti, Caio F. B. Macedo, Masashi Kimura,
Andrea Maselli, Vitor Cardoso | Parametrized black hole quasinormal ringdown. II. Coupled equations and
quadratic corrections for nonrotating black holes | 14 pages, 5 figures, 3 tables. Tabulated coefficients for generic QNM
calculations are available online (see the conclusions for a computational
recipe). v2: fixed minor typos to match version in press in PRD. v3: added a
few references, matches version published in PRD | Phys. Rev. D 100, 044061 (2019) | 10.1103/PhysRevD.100.044061 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Linear perturbations of spherically symmetric spacetimes in general
relativity are described by radial wave equations, with potentials that depend
on the spin of the perturbing field. In previous work we studied the
quasinormal mode spectrum of spacetimes for which the radial potentials are
slightly modified from the... | [
{
"created": "Wed, 12 Jun 2019 14:14:07 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Aug 2019 12:26:45 GMT",
"version": "v2"
},
{
"created": "Fri, 30 Aug 2019 15:00:23 GMT",
"version": "v3"
}
] | 2019-09-04 | [
[
"McManus",
"Ryan",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Macedo",
"Caio F. B.",
""
],
[
"Kimura",
"Masashi",
""
],
[
"Maselli",
"Andrea",
""
],
[
"Cardoso",
"Vitor",
""
]
] | Linear perturbations of spherically symmetric spacetimes in general relativity are described by radial wave equations, with potentials that depend on the spin of the perturbing field. In previous work we studied the quasinormal mode spectrum of spacetimes for which the radial potentials are slightly modified from their... |
1009.2941 | H Mohseni Sadjadi | H. Mohseni Sadjadi | Cosmological entropy and generalized second law of thermodynamics in
$F(R,G)$ theory of gravity | 10 pages, minor changes, typos corrected, accepted for publication in
Europhysics Letters | Europhys.Lett.92:50014,2010 | 10.1209/0295-5075/92/50014 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a spatially flat Friedmann-Lemaitre-Robertson-Walker space time
and investigate the second law and the generalized second law of thermodynamics
for apparent horizon in generalized modified Gauss Bonnet theory of gravity
(whose action contains a general function of Gauss Bonnet invariant and the
Ricci scal... | [
{
"created": "Wed, 15 Sep 2010 14:37:04 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Dec 2010 13:15:05 GMT",
"version": "v2"
}
] | 2011-01-17 | [
[
"Sadjadi",
"H. Mohseni",
""
]
] | We consider a spatially flat Friedmann-Lemaitre-Robertson-Walker space time and investigate the second law and the generalized second law of thermodynamics for apparent horizon in generalized modified Gauss Bonnet theory of gravity (whose action contains a general function of Gauss Bonnet invariant and the Ricci scalar... |
1111.7314 | Collin Capano | the LIGO Scientific Collaboration and the Virgo Collaboration: J.
Abadie, B. P. Abbott, R. Abbott, T. D. Abbott, M. Abernathy, T. Accadia, F.
Acernese, C. Adams, R. Adhikari, C. Affeldt, M. Agathos, P. Ajith, B. Allen,
G. S. Allen, E. Amador Ceron, D. Amariutei, R. S. Amin, S. B. Anderson, W. G.
Anderson, K. Ar... | Search for Gravitational Waves from Low Mass Compact Binary Coalescence
in LIGO's Sixth Science Run and Virgo's Science Runs 2 and 3 | 11 pages, 5 figures. For a repository of data used in the
publication, go to:
<https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=39633>. Also see the
announcement for this paper on ligo.org at:
<http://www.ligo.org/science/Publication-S6CBCLowMass/index.php> | Phys. Rev. D 85, 082002 (2012) | 10.1103/PhysRevD.85.082002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report on a search for gravitational waves from coalescing compact
binaries using LIGO and Virgo observations between July 7, 2009 and October 20,
2010. We searched for signals from binaries with total mass between 2 and 25
solar masses; this includes binary neutron stars, binary black holes, and
binaries consisti... | [
{
"created": "Wed, 30 Nov 2011 20:49:41 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Dec 2011 19:42:40 GMT",
"version": "v2"
},
{
"created": "Fri, 16 Dec 2011 20:18:59 GMT",
"version": "v3"
},
{
"created": "Wed, 18 Jan 2012 17:41:51 GMT",
"version": "v4"
}
] | 2012-08-27 | [
[
"the LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abadie",
"J.",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Abernathy",
"M.",
... | We report on a search for gravitational waves from coalescing compact binaries using LIGO and Virgo observations between July 7, 2009 and October 20, 2010. We searched for signals from binaries with total mass between 2 and 25 solar masses; this includes binary neutron stars, binary black holes, and binaries consisting... |
1401.7550 | Sergey Yu. Vernov | Ekaterina O. Pozdeeva, Sergey Yu. Vernov | Stable Exact Cosmological Solutions in Induced Gravity Models | 19 pages, 2 figures, v2: one figure and references added | AIP Conf. Proc. 1606 (2014) 48-58 | 10.1063/1.4891115 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study dynamics of induced gravity cosmological models with sixth degree
potential, that have found using the superpotential method. The important
property of these models are existence of exact cosmological solutions that
tend to fixed points. The stability of these cosmological solutions have been
obtained. In pa... | [
{
"created": "Tue, 28 Jan 2014 19:59:35 GMT",
"version": "v1"
},
{
"created": "Sat, 12 Apr 2014 08:00:18 GMT",
"version": "v2"
}
] | 2014-07-29 | [
[
"Pozdeeva",
"Ekaterina O.",
""
],
[
"Vernov",
"Sergey Yu.",
""
]
] | We study dynamics of induced gravity cosmological models with sixth degree potential, that have found using the superpotential method. The important property of these models are existence of exact cosmological solutions that tend to fixed points. The stability of these cosmological solutions have been obtained. In part... |
1505.08058 | Edward Porter | Edward K. Porter | The effect of different eLISA-like configurations on massive black hole
parameter estimation | 9 pages, 5 figures | Phys. Rev. D 92, 064001 (2015) | 10.1103/PhysRevD.92.064001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As the theme for the future L3 Cosmic Vision mission, ESA has recently chosen
the `Gravitational Wave Universe'. Within this call, a mission concept called
eLISA has been proposed. This observatory has a current initial configuration
consisting of 4 laser links between the three satellites, which are separated
by a d... | [
{
"created": "Fri, 29 May 2015 14:26:44 GMT",
"version": "v1"
}
] | 2015-09-09 | [
[
"Porter",
"Edward K.",
""
]
] | As the theme for the future L3 Cosmic Vision mission, ESA has recently chosen the `Gravitational Wave Universe'. Within this call, a mission concept called eLISA has been proposed. This observatory has a current initial configuration consisting of 4 laser links between the three satellites, which are separated by a dis... |
1111.1472 | Edward Anderson | Edward Anderson | The Problem of Time and Quantum Cosmology in the Relational Particle
Mechanics Arena | This v3 is a v substantial upgrade: previous v's did not yet announce
a local solution, we're up by 77 pages (to 386) & by 35 figs (to 93). It is
now a quartet of Theses, the Problem of Time one of v1 splitting into cl and
qm parts. I Cl RPM's. II Cl Problem of Time. III QM RPM's. IV QM Problem of
Time. Contain... | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article contains a local solution to the notorious Problem of Time in
Quantum Gravity at the conceptual level and which is actually realizable for
the relational triangle. The Problem of Time is that `time' in GR and `time' in
ordinary quantum theory are mutually incompatible notions, which is problematic
in try... | [
{
"created": "Mon, 7 Nov 2011 02:22:30 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Mar 2012 17:18:32 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Feb 2013 21:49:15 GMT",
"version": "v3"
}
] | 2015-03-19 | [
[
"Anderson",
"Edward",
""
]
] | This article contains a local solution to the notorious Problem of Time in Quantum Gravity at the conceptual level and which is actually realizable for the relational triangle. The Problem of Time is that `time' in GR and `time' in ordinary quantum theory are mutually incompatible notions, which is problematic in tryin... |
gr-qc/9809005 | Jorma Louko | Claus Kiefer and Jorma Louko | Hamiltonian evolution and quantization for extremal black holes | 16 pages, LaTeX using REVTeX v3.1. (v2: Reference added.) | Annalen Phys.8:67-81,1999 | null | Freiburg THEP-98/18 | gr-qc | null | We present and contrast two distinct ways of including extremal black holes
in a Lorentzian Hamiltonian quantization of spherically symmetric
Einstein-Maxwell theory. First, we formulate the classical Hamiltonian dynamics
with boundary conditions appropriate for extremal black holes only. The
Hamiltonian contains no ... | [
{
"created": "Tue, 1 Sep 1998 15:20:41 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Sep 1998 15:33:52 GMT",
"version": "v2"
}
] | 2014-10-01 | [
[
"Kiefer",
"Claus",
""
],
[
"Louko",
"Jorma",
""
]
] | We present and contrast two distinct ways of including extremal black holes in a Lorentzian Hamiltonian quantization of spherically symmetric Einstein-Maxwell theory. First, we formulate the classical Hamiltonian dynamics with boundary conditions appropriate for extremal black holes only. The Hamiltonian contains no su... |
gr-qc/0312110 | Parampreet Singh | Parampreet Singh, Alexey Toporensky | Big Crunch Avoidance in k = 1 Semi-Classical Loop Quantum Cosmology | Minor changes, To appear in Physical Review D | Phys.Rev. D69 (2004) 104008 | 10.1103/PhysRevD.69.104008 | null | gr-qc astro-ph hep-th | null | It is well known that a closed universe with a minimally coupled massive
scalar field always collapses to a singularity unless the initial conditions
are extremely fine tuned. We show that the corrections to the equations of
motion for the massive scalar field, given by loop quantum gravity in high
curvature regime, ... | [
{
"created": "Thu, 25 Dec 2003 09:50:49 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Jan 2004 12:11:49 GMT",
"version": "v2"
},
{
"created": "Thu, 26 Feb 2004 04:51:55 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Singh",
"Parampreet",
""
],
[
"Toporensky",
"Alexey",
""
]
] | It is well known that a closed universe with a minimally coupled massive scalar field always collapses to a singularity unless the initial conditions are extremely fine tuned. We show that the corrections to the equations of motion for the massive scalar field, given by loop quantum gravity in high curvature regime, al... |
1806.09500 | Che-Yu Chen | Che-Yu Chen, Pisin Chen | Quasi-normal modes of massless scalar fields for charged black holes in
the Palatini-type gravity | 13 pages, 6 figures, revised version, accepted for publication in PRD | Phys. Rev. D 98, 044042 (2018) | 10.1103/PhysRevD.98.044042 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The scrutiny of black hole perturbations and its application to testing
gravity theories have been a very crucial frontier in modern physics. In this
paper we study the quasi-normal modes (QNM) of massless scalar perturbations
for various charged black holes in the Palatini-type theories of gravity.
Specifically, we ... | [
{
"created": "Mon, 25 Jun 2018 14:48:12 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Aug 2018 03:13:19 GMT",
"version": "v2"
}
] | 2018-09-03 | [
[
"Chen",
"Che-Yu",
""
],
[
"Chen",
"Pisin",
""
]
] | The scrutiny of black hole perturbations and its application to testing gravity theories have been a very crucial frontier in modern physics. In this paper we study the quasi-normal modes (QNM) of massless scalar perturbations for various charged black holes in the Palatini-type theories of gravity. Specifically, we co... |
1303.0430 | Jose Ademir Sales Lima | E. L. D. Perico, J. A. S. Lima, M. Campos | Black Hole Formation with an Interacting Vacuum Energy Density:
Curvature Effects | 9 pages, 12 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational collapse of a spherically symmetric massive core of a star
in which the fluid component is interacting with a growing vacuum energy
density filling a FLRW type geometry with an arbitrary curvature parameter is
investigated. The complete set of exact solutions for all values of the free
parameters ar... | [
{
"created": "Sat, 2 Mar 2013 21:42:55 GMT",
"version": "v1"
}
] | 2013-03-05 | [
[
"Perico",
"E. L. D.",
""
],
[
"Lima",
"J. A. S.",
""
],
[
"Campos",
"M.",
""
]
] | The gravitational collapse of a spherically symmetric massive core of a star in which the fluid component is interacting with a growing vacuum energy density filling a FLRW type geometry with an arbitrary curvature parameter is investigated. The complete set of exact solutions for all values of the free parameters are ... |
gr-qc/0407052 | Krzysztof A. Meissner | Krzysztof A. Meissner | Black hole entropy in Loop Quantum Gravity | LaTeX, 10 pages | Class.Quant.Grav. 21 (2004) 5245-5252 | 10.1088/0264-9381/21/22/015 | null | gr-qc | null | We calculate the black hole entropy in Loop Quantum Gravity as a function of
the horizon area and provide the exact formula for the leading and sub-leading
terms. By comparison with the Bekenstein-Hawking formula we uniquely fix the
value of the 'quantum of area' in the theory.
| [
{
"created": "Wed, 14 Jul 2004 19:36:34 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Meissner",
"Krzysztof A.",
""
]
] | We calculate the black hole entropy in Loop Quantum Gravity as a function of the horizon area and provide the exact formula for the leading and sub-leading terms. By comparison with the Bekenstein-Hawking formula we uniquely fix the value of the 'quantum of area' in the theory. |
gr-qc/0201060 | Brout | Robert Brout | The Inflaton and its Mass | LaTex file, 11 pages | null | null | null | gr-qc | null | In the context of the two fluid model of space-time fluctuations proposed to
tame the transplanckian problem encountered in black hole physics, it is
postulated that the inflaton is the fluctuation of mode density, ``the vapor
component'' of the model. The mass of the inflaton is occasioned by the
exchange of degrees... | [
{
"created": "Fri, 18 Jan 2002 16:12:38 GMT",
"version": "v1"
},
{
"created": "Sun, 20 Jan 2002 17:54:37 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Brout",
"Robert",
""
]
] | In the context of the two fluid model of space-time fluctuations proposed to tame the transplanckian problem encountered in black hole physics, it is postulated that the inflaton is the fluctuation of mode density, ``the vapor component'' of the model. The mass of the inflaton is occasioned by the exchange of degrees o... |
gr-qc/0608135 | Etera R. Livine | Etera R. Livine | Towards a Covariant Loop Quantum Gravity | 13 pages, review, draft chapter for the book "Approaches to quantum
gravity", being prepared by Daniele Oriti for Cambridge University Press,
comments welcome | null | null | null | gr-qc hep-th | null | We review the canonical analysis of the Palatini action without going to the
time gauge as in the standard derivation of Loop Quantum Gravity. This allows
to keep track of the Lorentz gauge symmetry and leads to a theory of Covariant
Loop Quantum Gravity. This new formulation does not suffer from the Immirzi
ambiguit... | [
{
"created": "Wed, 30 Aug 2006 18:50:02 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Livine",
"Etera R.",
""
]
] | We review the canonical analysis of the Palatini action without going to the time gauge as in the standard derivation of Loop Quantum Gravity. This allows to keep track of the Lorentz gauge symmetry and leads to a theory of Covariant Loop Quantum Gravity. This new formulation does not suffer from the Immirzi ambiguity,... |
2010.05830 | Marta Colleoni | Marta Colleoni, Maite Mateu-Lucena, H\'ector Estell\'es, Cecilio
Garc\'ia-Quir\'os, David Keitel, Geraint Pratten, Antoni Ramos-Buades, Sascha
Husa | Towards the routine use of subdominant harmonics in gravitational-wave
inference: re-analysis of GW190412 with generation X waveform models | 25 pages, 18 figures. Data release:
https://doi.org/10.5281/zenodo.4079188 | Phys. Rev. D 103, 024029 (2021) | 10.1103/PhysRevD.103.024029 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We re-analyse the gravitational-wave event GW190412 with state-of-the-art
phenomenological waveform models. This event, which has been associated with a
black hole merger, is interesting due to the significant contribution from
subdominant harmonics. We use both frequency-domain and time-domain waveform
models. The P... | [
{
"created": "Mon, 12 Oct 2020 16:25:46 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Oct 2020 15:45:17 GMT",
"version": "v2"
}
] | 2021-01-20 | [
[
"Colleoni",
"Marta",
""
],
[
"Mateu-Lucena",
"Maite",
""
],
[
"Estellés",
"Héctor",
""
],
[
"García-Quirós",
"Cecilio",
""
],
[
"Keitel",
"David",
""
],
[
"Pratten",
"Geraint",
""
],
[
"Ramos-Buades",
"Antoni",... | We re-analyse the gravitational-wave event GW190412 with state-of-the-art phenomenological waveform models. This event, which has been associated with a black hole merger, is interesting due to the significant contribution from subdominant harmonics. We use both frequency-domain and time-domain waveform models. The Phe... |
gr-qc/0510118 | Manfred Droste | Manfred Droste | Universal homogeneous causal sets | 14 pages | J.Math.Phys. 46 (2005) 122503 | 10.1063/1.2147607 | null | gr-qc | null | Causal sets are particular partially ordered sets which have been proposed as
a basic model for discrete space-time in quantum gravity. We show that the
class C of all countable past-finite causal sets contains a unique causal set
(U,<) which is universal (i.e., any member of C can be embedded into (U,<)) and
homogen... | [
{
"created": "Fri, 28 Oct 2005 13:50:01 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Droste",
"Manfred",
""
]
] | Causal sets are particular partially ordered sets which have been proposed as a basic model for discrete space-time in quantum gravity. We show that the class C of all countable past-finite causal sets contains a unique causal set (U,<) which is universal (i.e., any member of C can be embedded into (U,<)) and homogeneo... |
gr-qc/9712020 | John Barrow | John D. Barrow | Limits on Cosmological Magnetic Fields and Other Anisotropic Stresses | 28 pages, Tex file, no figures. Proceedings 4th Paris Cosmology
Colloquium, Paris June 1997, ed H. de Vega, and N. Sanchez | null | null | null | gr-qc astro-ph | null | We discuss the cosmological evolution of matter sources with small
anisotropic pressures. This includes electric and magnetic fields,
collisionless relativistic particles, gravitons, antisymmetric axion fields in
low-energy string cosmologies, spatial curvature anisotropies, and stresses
arising from simple topologic... | [
{
"created": "Wed, 3 Dec 1997 02:56:50 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Barrow",
"John D.",
""
]
] | We discuss the cosmological evolution of matter sources with small anisotropic pressures. This includes electric and magnetic fields, collisionless relativistic particles, gravitons, antisymmetric axion fields in low-energy string cosmologies, spatial curvature anisotropies, and stresses arising from simple topological... |
1807.09721 | Andronikos Paliathanasis | Leonidas Karpathopoulos, Michael Tsamparlis and Andronikos
Paliathanasis | Quadratic conservation laws and collineations: a discussion | 10 pages, no figures, to appear in JGP | null | 10.1016/j.geomphys.2018.07.017 | null | gr-qc math-ph math.CA math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Every second order system of autonomous differential equations can be
described by an autonomous holonomic dynamical system with a Lagrangian part,
an effective potential and a set of generalized forces. The kinematic part of
the Lagrangian defines the kinetic metric which subsequently defines a
Riemannian geometry i... | [
{
"created": "Wed, 25 Jul 2018 16:57:25 GMT",
"version": "v1"
}
] | 2018-09-26 | [
[
"Karpathopoulos",
"Leonidas",
""
],
[
"Tsamparlis",
"Michael",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | Every second order system of autonomous differential equations can be described by an autonomous holonomic dynamical system with a Lagrangian part, an effective potential and a set of generalized forces. The kinematic part of the Lagrangian defines the kinetic metric which subsequently defines a Riemannian geometry in ... |
1807.01997 | Mayeul Arminjon | Mayeul Arminjon | Is spacetime as physical as is space? | 25 pages | Journal of Geometry and Symmetry in Physics, Vol. 46, pp. 1-24
(2017) | 10.7546/jgsp-46-2017-1-24 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Two questions are investigated by looking successively at classical
mechanics, special relativity, and relativistic gravity: first, how is space
related with spacetime? The proposed answer is that each given reference fluid,
that is a congruence of reference trajectories, defines a physical space. The
points of that ... | [
{
"created": "Wed, 4 Jul 2018 13:59:59 GMT",
"version": "v1"
}
] | 2018-07-06 | [
[
"Arminjon",
"Mayeul",
""
]
] | Two questions are investigated by looking successively at classical mechanics, special relativity, and relativistic gravity: first, how is space related with spacetime? The proposed answer is that each given reference fluid, that is a congruence of reference trajectories, defines a physical space. The points of that sp... |
2010.08424 | Farhad Darabi | F. Darabi, M. Golmohammadi, and A. Rezaei-Aghdam | (2+1)-dimensional f(R) gravity solutions via Hojman symmetry | 17 pages, minor revisions | Int. J. Geom. Methods Mod. Phys, Vol. 19, No. 04, 2250057 (2022) | 10.1142/S0219887822500578 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we use the Hojman symmetry approach to find new
$(2+1)$-dimensional $f(R)$ gravity solutions, in comparison to Noether symmetry
approach. In the special case of Hojman symmetry vector $X=R$, we recover
$(2+1)$-dimensional BTZ black hole and generalized $(2+1)$-dimensional BTZ
black hole solutions, obta... | [
{
"created": "Fri, 16 Oct 2020 14:41:10 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Apr 2021 08:44:34 GMT",
"version": "v2"
},
{
"created": "Sat, 26 Mar 2022 10:23:06 GMT",
"version": "v3"
}
] | 2022-03-29 | [
[
"Darabi",
"F.",
""
],
[
"Golmohammadi",
"M.",
""
],
[
"Rezaei-Aghdam",
"A.",
""
]
] | In this paper, we use the Hojman symmetry approach to find new $(2+1)$-dimensional $f(R)$ gravity solutions, in comparison to Noether symmetry approach. In the special case of Hojman symmetry vector $X=R$, we recover $(2+1)$-dimensional BTZ black hole and generalized $(2+1)$-dimensional BTZ black hole solutions, obtain... |
1601.01625 | Hao Wei | Shoulong Li, Hao Wei | Stability of Differentially Rotating Disks in $f(T)$ Theory | 16 pages, 1 figure, revtex4; v2: discussions added, Gen. Rel. Grav.
in press; v3: published version | Gen. Rel. Grav. 48 (2016) 150 | 10.1007/s10714-016-2146-y | null | gr-qc astro-ph.CO astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To explain the accelerated expansion of our universe, many dark energy models
and modified gravity theories have been proposed so far. It is argued in the
literature that they are difficult to be distinguished on the cosmological
scales. Therefore, it is well motivated to consider the relevant astrophysical
phenomena... | [
{
"created": "Thu, 7 Jan 2016 18:00:00 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Oct 2016 03:19:00 GMT",
"version": "v2"
},
{
"created": "Mon, 24 Oct 2016 03:11:00 GMT",
"version": "v3"
}
] | 2016-10-25 | [
[
"Li",
"Shoulong",
""
],
[
"Wei",
"Hao",
""
]
] | To explain the accelerated expansion of our universe, many dark energy models and modified gravity theories have been proposed so far. It is argued in the literature that they are difficult to be distinguished on the cosmological scales. Therefore, it is well motivated to consider the relevant astrophysical phenomena o... |
gr-qc/0610004 | Gregory M. Harry | Gregory M. Harry, Matthew R. Abernathy, Andres E. Becerra-Toledo,
Helena Armandula, Eric Black, Kate Dooley, Matt Eichenfield, Chinyere
Nwabugwu, Akira Villar, D. R. M. Crooks, Gianpietro Cagnoli, Jim Hough, Colin
R. How, Ian MacLaren, Peter Murray, Stuart Reid, Sheila Rowan, Peter H.
Sneddon, Martin M Fejer, R... | Titania-doped tantala/silica coatings for gravitational-wave detection | null | Class.Quant.Grav.24:405-416,2007 | 10.1088/0264-9381/24/2/008 | null | gr-qc | null | Reducing thermal noise from optical coatings is crucial to reaching the
required sensitivity in next generation interferometric gravitational-waves
detectors. Here we show that adding TiO$_2$ to Ta$_2$O$_5$ in
Ta$_2$O$_5$/SiO$_2$ coatings reduces the internal friction and in addition
present data confirming it reduce... | [
{
"created": "Sun, 1 Oct 2006 20:47:34 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Harry",
"Gregory M.",
""
],
[
"Abernathy",
"Matthew R.",
""
],
[
"Becerra-Toledo",
"Andres E.",
""
],
[
"Armandula",
"Helena",
""
],
[
"Black",
"Eric",
""
],
[
"Dooley",
"Kate",
""
],
[
"Eichenfield",
"Matt",
... | Reducing thermal noise from optical coatings is crucial to reaching the required sensitivity in next generation interferometric gravitational-waves detectors. Here we show that adding TiO$_2$ to Ta$_2$O$_5$ in Ta$_2$O$_5$/SiO$_2$ coatings reduces the internal friction and in addition present data confirming it reduces ... |
1101.0863 | Yurii Ignatyev | Yu.G. Ignatyev | Magnetohydrodynamic Equations in a Gravitational Field and Excitation of
Magnetohydrodynamic Shock Waves by a Gravitational Wave | 28 pages, 19 references, 1 table | Gravitation & Cosmology, Vol. 1 (1995), No. 4, pp. 287-300 | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | On the basis of simple principles we derive and investigate the equations of
relativistic plasma magnetohydrodynamics (MHD) in an arbitrary gravitational
field. An exact solution describing the motion of magnetoactive plasma against
the background of the metric of a plane gravitational wave (PGW) with an
arbitrary am... | [
{
"created": "Wed, 5 Jan 2011 01:09:32 GMT",
"version": "v1"
}
] | 2011-01-06 | [
[
"Ignatyev",
"Yu. G.",
""
]
] | On the basis of simple principles we derive and investigate the equations of relativistic plasma magnetohydrodynamics (MHD) in an arbitrary gravitational field. An exact solution describing the motion of magnetoactive plasma against the background of the metric of a plane gravitational wave (PGW) with an arbitrary ampl... |
1501.06306 | Ayesha Zakria | Ayesha Zakria, Mubasher Jamil | Center of Mass Energy of the Collision for Two General Geodesic
Particles Around a Kerr-Newman-Taub-NUT Black Hole | 23 pages, 7 figures, 2 tables, Accepted in JHEP | JHEP 05 : 147 (2015) | 10.1007/JHEP05(2015)147 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the center of mass energy of the collision for
two neutral particles with different rest masses falling freely from rest at
infinity in the background of a Kerr-Newman-Taub-NUT black hole. Further, we
discuss the center of mass energy near the horizon(s) of an extremal and
non-extremal K... | [
{
"created": "Mon, 26 Jan 2015 10:11:52 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Mar 2015 19:04:56 GMT",
"version": "v2"
},
{
"created": "Sun, 10 May 2015 12:49:59 GMT",
"version": "v3"
}
] | 2015-06-01 | [
[
"Zakria",
"Ayesha",
""
],
[
"Jamil",
"Mubasher",
""
]
] | In this paper, we investigate the center of mass energy of the collision for two neutral particles with different rest masses falling freely from rest at infinity in the background of a Kerr-Newman-Taub-NUT black hole. Further, we discuss the center of mass energy near the horizon(s) of an extremal and non-extremal Ker... |
2208.15002 | Kelly MacDevette | Kelly MacDevette, Peter Dunsby, Saikat Chakraborty | A comprehensive analysis of the compact phase space for Hu-Sawicki
$f(R)$ dark energy models including spatial curvature | 23 pages, 9 figures | null | 10.1103/PhysRevD.106.103533 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | We present a comprehensive dynamical systems analysis of homogeneous and
isotropic Friedmann-La\^{i}matre-Robertson-Walker cosmologies in the Hu-Sawicki
$f(R)$ dark energy model for the parameter choice $\{n,C_1\}=\{1,1\}$. For a
generic $f(R)$ theory, we outline the procedures of compactification of the
phase space,... | [
{
"created": "Wed, 31 Aug 2022 17:59:23 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Oct 2022 11:28:28 GMT",
"version": "v2"
}
] | 2022-12-07 | [
[
"MacDevette",
"Kelly",
""
],
[
"Dunsby",
"Peter",
""
],
[
"Chakraborty",
"Saikat",
""
]
] | We present a comprehensive dynamical systems analysis of homogeneous and isotropic Friedmann-La\^{i}matre-Robertson-Walker cosmologies in the Hu-Sawicki $f(R)$ dark energy model for the parameter choice $\{n,C_1\}=\{1,1\}$. For a generic $f(R)$ theory, we outline the procedures of compactification of the phase space, w... |
1802.03306 | Peter Tsun Ho Pang | Peter T. H. Pang, Juan Calder\'on Bustillo, Yifan Wang and Tjonnie G.
F. Li | On the Potential Observation of False Deviations from General Relativity
in Gravitational Wave Observations from Binary Black Holes | 11 pages, 7 figures | Phys. Rev. D 98, 024019 (2018) | 10.1103/PhysRevD.98.024019 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Detections of gravitational waves emitted by binary black holes allow for
tests of General Relativity in the strong-field regime. In particular,
deviations from General Relativity can be observed by comparing incoming
signals to waveform templates that include parametrized deviations from General
Relativity. However,... | [
{
"created": "Fri, 9 Feb 2018 15:33:58 GMT",
"version": "v1"
}
] | 2018-08-07 | [
[
"Pang",
"Peter T. H.",
""
],
[
"Bustillo",
"Juan Calderón",
""
],
[
"Wang",
"Yifan",
""
],
[
"Li",
"Tjonnie G. F.",
""
]
] | Detections of gravitational waves emitted by binary black holes allow for tests of General Relativity in the strong-field regime. In particular, deviations from General Relativity can be observed by comparing incoming signals to waveform templates that include parametrized deviations from General Relativity. However, i... |
gr-qc/0604079 | Sujitkumar Chatterjee | D. Panigrahi, Y.Z.Zhang and S.Chatterjee | Accelerating Universe as Window for Extra Dimensions | 20 pages,3 figures | Int.J.Mod.Phys. A21 (2006) 6491-6512 | 10.1142/S0217751X06034318 | null | gr-qc | null | Homogeneous cosmological solutions are obtained in five dimensional space
time assuming equations of state $ p = k\rho $ and $ p_{5}= \gamma\rho$ where p
is the isotropic 3 - pressure and $p_{5}$, that for the fifth dimension. Using
different values for the constants k and $\gamma$ many known solutions are
rediscover... | [
{
"created": "Wed, 19 Apr 2006 12:18:31 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Sep 2006 14:31:11 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Panigrahi",
"D.",
""
],
[
"Zhang",
"Y. Z.",
""
],
[
"Chatterjee",
"S.",
""
]
] | Homogeneous cosmological solutions are obtained in five dimensional space time assuming equations of state $ p = k\rho $ and $ p_{5}= \gamma\rho$ where p is the isotropic 3 - pressure and $p_{5}$, that for the fifth dimension. Using different values for the constants k and $\gamma$ many known solutions are rediscovered... |
gr-qc/0512146 | Robert Carroll | Robert Carroll | Remarks on the WDW equation | 15 pages, Latex 2e | null | null | null | gr-qc | null | We show a kind of converse to some results of Hall and Reginatto on exact
uncertainty related to the Schroedinger and Wheeler-deWitt equations. Some
survey material on statistical geometrodynamics is also sketched.
| [
{
"created": "Mon, 26 Dec 2005 14:11:26 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Carroll",
"Robert",
""
]
] | We show a kind of converse to some results of Hall and Reginatto on exact uncertainty related to the Schroedinger and Wheeler-deWitt equations. Some survey material on statistical geometrodynamics is also sketched. |
gr-qc/0702032 | Yun Soo Myung | Yun Soo Myung | Black hole and holographic dark energy | 11pages, 1 figure, version to appear in PLB | Phys.Lett.B649:247-251,2007 | 10.1016/j.physletb.2007.04.026 | INJE-TP-07-01 | gr-qc | null | We discuss the connection between black hole and holographic dark energy. We
examine the issue of the equation of state (EOS) for holographic energy density
as a candidate for the dark energy carefully. This is closely related to the
EOS for black hole, because the holographic dark energy comes from the black
hole en... | [
{
"created": "Tue, 6 Feb 2007 02:27:19 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Apr 2007 00:45:12 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Myung",
"Yun Soo",
""
]
] | We discuss the connection between black hole and holographic dark energy. We examine the issue of the equation of state (EOS) for holographic energy density as a candidate for the dark energy carefully. This is closely related to the EOS for black hole, because the holographic dark energy comes from the black hole ener... |
1805.06394 | Niccol\'o Loret | Niccol\'o Loret, Leonardo Barcaroli, Giulia Gubitosi | Quantum Gravity phenomenology and metric formalism | null | null | 10.1142/9789813226609_0534 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this proceedings for the MG14 conference, we discuss the construction of a
phenomenology of Planck-scale effects in curved spacetimes, underline a few
open issues and describe some perspectives for the future of this research
line.
| [
{
"created": "Wed, 16 May 2018 16:05:30 GMT",
"version": "v1"
}
] | 2019-02-27 | [
[
"Loret",
"Niccoló",
""
],
[
"Barcaroli",
"Leonardo",
""
],
[
"Gubitosi",
"Giulia",
""
]
] | In this proceedings for the MG14 conference, we discuss the construction of a phenomenology of Planck-scale effects in curved spacetimes, underline a few open issues and describe some perspectives for the future of this research line. |
gr-qc/0508120 | Claus Kiefer | Claus Kiefer | Quantum Gravity: General Introduction and Recent Developments | 21 pages, 6 figures, invited contribution for "Annalen der Physik",
v2: minor corrections, additional references | Annalen Phys. 15 (2005) 129-148 | 10.1002/andp.200510175 | null | gr-qc hep-th | null | I briefly review the current status of quantum gravity. After giving some
general motivations for the need of such a theory, I discuss the main
approaches in quantizing general relativity: Covariant approaches (perturbation
theory, effective theory, and path integrals) and canonical approaches (quantum
geometrodynami... | [
{
"created": "Mon, 29 Aug 2005 15:32:38 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Sep 2005 07:15:47 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Kiefer",
"Claus",
""
]
] | I briefly review the current status of quantum gravity. After giving some general motivations for the need of such a theory, I discuss the main approaches in quantizing general relativity: Covariant approaches (perturbation theory, effective theory, and path integrals) and canonical approaches (quantum geometrodynamics... |
gr-qc/0105020 | Gregory M. Harry | Gregory M Harry, Janet L Houser, Kenneth A Strain | Comparison of advanced gravitational-wave detectors | null | Phys.Rev. D65 (2002) 082001 | 10.1103/PhysRevD.65.082001 | null | gr-qc | null | We compare two advanced designs for gravitational-wave antennas in terms of
their ability to detect two possible gravitational wave sources. Spherical,
resonant mass antennas and interferometers incorporating resonant sideband
extraction (RSE) were modeled using experimentally measurable parameters. The
signal-to-noi... | [
{
"created": "Fri, 4 May 2001 21:42:49 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Jun 2001 22:09:25 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Harry",
"Gregory M",
""
],
[
"Houser",
"Janet L",
""
],
[
"Strain",
"Kenneth A",
""
]
] | We compare two advanced designs for gravitational-wave antennas in terms of their ability to detect two possible gravitational wave sources. Spherical, resonant mass antennas and interferometers incorporating resonant sideband extraction (RSE) were modeled using experimentally measurable parameters. The signal-to-noise... |
1203.0754 | Vitaliy Voytik | Vitaliy V. Voytik | About Lorentz-M{\o}ller-Nelson transformation to rigid noninertial frame
of reference | 47 pages, in Russian, added subsection about connection between the
proper Thomas precession and the Wigner rotation, revised section 10,
corrected typos | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With a special Lorentz-M{\o}ller-Nelson (LMN) transformation found
transformation of velocity from the laboratory system S to an accelerated,
rotating frame of reference s. The physical sense of parameter entering into
the LMN special transformation is established. For small distances, and their
proper smooth motion ... | [
{
"created": "Sun, 4 Mar 2012 17:41:37 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Jun 2012 15:21:04 GMT",
"version": "v2"
}
] | 2012-06-04 | [
[
"Voytik",
"Vitaliy V.",
""
]
] | With a special Lorentz-M{\o}ller-Nelson (LMN) transformation found transformation of velocity from the laboratory system S to an accelerated, rotating frame of reference s. The physical sense of parameter entering into the LMN special transformation is established. For small distances, and their proper smooth motion wi... |
1904.01563 | Emmanuil Saridakis | Spyros Basilakos, Genly Leon, G. Papagiannopoulos, Emmanuel N.
Saridakis | Dynamical system analysis at background and perturbation levels:
Quintessence in severe disadvantage comparing to $\Lambda$CDM | 5 pages, 1 figure, 3 tables, version accepted in Phys. Rev. D | Phys. Rev. D 100, 043524 (2019) | 10.1103/PhysRevD.100.043524 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform for the first time a dynamical system analysis of both the
background and perturbation equations, of $\Lambda$CDM cosmology and
quintessence scenario with an exponential potential. In the former case the
perturbations do not change the stability of the late-time attractor of the
background equations, and t... | [
{
"created": "Tue, 2 Apr 2019 17:39:26 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Aug 2019 06:59:53 GMT",
"version": "v2"
},
{
"created": "Mon, 19 Aug 2019 03:24:25 GMT",
"version": "v3"
}
] | 2019-08-21 | [
[
"Basilakos",
"Spyros",
""
],
[
"Leon",
"Genly",
""
],
[
"Papagiannopoulos",
"G.",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We perform for the first time a dynamical system analysis of both the background and perturbation equations, of $\Lambda$CDM cosmology and quintessence scenario with an exponential potential. In the former case the perturbations do not change the stability of the late-time attractor of the background equations, and the... |
0912.2761 | Oded Hod | Shahar Hod and Oded Hod | Comment on "The extremal black hole bomb" | 2 pages, 1 figure | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, we have provided an analytical treatment of the phenomena known as
the 'black-hole bomb' (arXiv:0910.0734). In particular, we have determined
analytically the unstable growing resonances of a massive scalar field in the
rotating Kerr black hole spacetime. It was later claimed by J. G. Rosa
(arXiv:0912.1780)... | [
{
"created": "Mon, 14 Dec 2009 21:47:19 GMT",
"version": "v1"
}
] | 2009-12-17 | [
[
"Hod",
"Shahar",
""
],
[
"Hod",
"Oded",
""
]
] | Recently, we have provided an analytical treatment of the phenomena known as the 'black-hole bomb' (arXiv:0910.0734). In particular, we have determined analytically the unstable growing resonances of a massive scalar field in the rotating Kerr black hole spacetime. It was later claimed by J. G. Rosa (arXiv:0912.1780) t... |
1609.04037 | Andrea Nerozzi | Andrea Nerozzi | Spin coefficients and gauge fixing in the Newman-Penrose formalism | 12 pages, to match version published in PRD | Phys. Rev. D 95, 064012 (2017) | 10.1103/PhysRevD.95.064012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Since its introduction in 1962, the Newman-Penrose formalism has been widely
used in analytical and numerical studies of Einstein's equations, like for
example for the Teukolsky master equation, or as a powerful wave extraction
tool in numerical relativity. Despite the many applications, Einstein's
equations in the N... | [
{
"created": "Tue, 13 Sep 2016 20:27:22 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Mar 2017 00:27:48 GMT",
"version": "v2"
}
] | 2017-03-10 | [
[
"Nerozzi",
"Andrea",
""
]
] | Since its introduction in 1962, the Newman-Penrose formalism has been widely used in analytical and numerical studies of Einstein's equations, like for example for the Teukolsky master equation, or as a powerful wave extraction tool in numerical relativity. Despite the many applications, Einstein's equations in the New... |
2104.01895 | Ragab Gad | Ragab M Gad and H. A. Alharbi | Gravitational Energy in Van Stockum Space-Time | 16 pages No figures, Accepted for publication in Indian journal of
physics (2021) | null | 10.1007/s12648-021-02085-2 | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | The purpose of this paper is to illustrate the problem of energy and momentum
distributions of Van Stockum space-time within the framework of two different
theories of gravity, general relativity and teleparallel gravity.
We have shown that for all homogeneous space-times with metric components
$g_{\mu\nu}$ being f... | [
{
"created": "Fri, 2 Apr 2021 11:49:33 GMT",
"version": "v1"
}
] | 2021-05-26 | [
[
"Gad",
"Ragab M",
""
],
[
"Alharbi",
"H. A.",
""
]
] | The purpose of this paper is to illustrate the problem of energy and momentum distributions of Van Stockum space-time within the framework of two different theories of gravity, general relativity and teleparallel gravity. We have shown that for all homogeneous space-times with metric components $g_{\mu\nu}$ being funct... |
gr-qc/0312100 | Achilles D. Speliotopoulos | Raymond Y. Chiao and A. D. Speliotopoulos | A Crystal-based Matter-wave Interferometric Gravitational-wave
Observatory | Nineteen pages with two figures. Written using RevTeX. To appear in,
"Quantum Aspects of Beam Physics", ed. by P. Chen (World Scientific,
Singapore, 2004). Typographical errors corrected and acknowledgements added | null | 10.1142/9789812702333_0025 | null | gr-qc astro-ph hep-th physics.atom-ph | null | It is shown that atom interferometry allows for the construction of MIGO, the
Matter-wave Interferometric Gravitational-wave Observatory. MIGOs of the same
sensitivity as LIGO or LISA are expected to be orders of magnitude smaller than
either one. A design for MIGO using crystalline diffraction gratings is
introduced... | [
{
"created": "Mon, 22 Dec 2003 20:57:01 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Dec 2003 22:07:50 GMT",
"version": "v2"
},
{
"created": "Fri, 26 Dec 2003 18:21:38 GMT",
"version": "v3"
}
] | 2017-08-23 | [
[
"Chiao",
"Raymond Y.",
""
],
[
"Speliotopoulos",
"A. D.",
""
]
] | It is shown that atom interferometry allows for the construction of MIGO, the Matter-wave Interferometric Gravitational-wave Observatory. MIGOs of the same sensitivity as LIGO or LISA are expected to be orders of magnitude smaller than either one. A design for MIGO using crystalline diffraction gratings is introduced, ... |
1901.02674 | K Haris | O.A. Hannuksela, K. Haris, K.K.Y. Ng, S. Kumar, A.K. Mehta, D. Keitel,
T.G.F. Li and P. Ajith | Search for gravitational lensing signatures in LIGO-Virgo binary black
hole events | 9 pages, 6 figures. Longer discussion on the marginal events | Astrophysical Journal Letters 874:L2 (2019) | 10.3847/2041-8213/ab0c0f | LIGO-P1800297 | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We search for signatures of gravitational lensing in the binary black hole
events detected by Advanced LIGO and Virgo during their first two observational
runs. In particular, we look for three effects: 1) evidence of lensing
magnification in the individual signals due to galaxy lenses, 2) evidence of
multiple images... | [
{
"created": "Wed, 9 Jan 2019 11:00:38 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Jan 2019 12:07:22 GMT",
"version": "v2"
}
] | 2019-06-03 | [
[
"Hannuksela",
"O. A.",
""
],
[
"Haris",
"K.",
""
],
[
"Ng",
"K. K. Y.",
""
],
[
"Kumar",
"S.",
""
],
[
"Mehta",
"A. K.",
""
],
[
"Keitel",
"D.",
""
],
[
"Li",
"T. G. F.",
""
],
[
"Ajith",
"P.",
... | We search for signatures of gravitational lensing in the binary black hole events detected by Advanced LIGO and Virgo during their first two observational runs. In particular, we look for three effects: 1) evidence of lensing magnification in the individual signals due to galaxy lenses, 2) evidence of multiple images d... |
1308.1543 | Behrouz Mirza | Seyed Ali Hosseini Mansoori, Behrouz Mirza | Correspondence of phase transition points and singularities of
thermodynamic geometry of black holes | 10 pages, 4 figures, typos fixed, references added | Eur. Phys. J. C (2014) 74:2681 | 10.1140/epjc/s10052-013-2681-6 | null | gr-qc cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore a formulation of thermodynamic geometry of black holes and prove
that the divergent points of the specific heat correspond exactly to the
singularities of the thermodynamic curvature. We investigate this
correspondence for different types of black holes. This formulation can also be
applied to an arbitrary... | [
{
"created": "Wed, 7 Aug 2013 11:54:47 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Feb 2014 15:04:33 GMT",
"version": "v2"
}
] | 2014-02-06 | [
[
"Mansoori",
"Seyed Ali Hosseini",
""
],
[
"Mirza",
"Behrouz",
""
]
] | We explore a formulation of thermodynamic geometry of black holes and prove that the divergent points of the specific heat correspond exactly to the singularities of the thermodynamic curvature. We investigate this correspondence for different types of black holes. This formulation can also be applied to an arbitrary t... |
1212.1324 | Manoelito M. de Souza | Manoelito M de Souza | Gravity from Discrete Interactions, a laboratory of ideas for field
theory | 11 pages, 2 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The observed accelerated expansion of the universe is an indication that
somehow, in some conditions, gravity may become a repulsive interaction. The
very concept of discrete interactions, compatible with General Relativity as an
effective theory of averaged fields, can handle this and other pressing
problems without... | [
{
"created": "Thu, 6 Dec 2012 13:31:47 GMT",
"version": "v1"
}
] | 2012-12-07 | [
[
"de Souza",
"Manoelito M",
""
]
] | The observed accelerated expansion of the universe is an indication that somehow, in some conditions, gravity may become a repulsive interaction. The very concept of discrete interactions, compatible with General Relativity as an effective theory of averaged fields, can handle this and other pressing problems without t... |
1702.08412 | Dennis Philipp | Dennis Philipp, Volker Perlick, Dirk Puetzfeld, Eva Hackmann, Claus
L\"ammerzahl | Definition of the relativistic geoid in terms of isochronometric
surfaces | 24 pages, 7 figures; improved figures, references added | Phys. Rev. D 95, 104037 (2017) | 10.1103/PhysRevD.95.104037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a definition of the geoid that is based on the formalism of
general relativity without approximations; i.e. it allows for arbitrarily
strong gravitational fields. For this reason, it applies not only to the Earth
and other planets but also to compact objects such as neutron stars. We define
the geoid as a ... | [
{
"created": "Mon, 27 Feb 2017 18:14:04 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Jun 2017 16:02:19 GMT",
"version": "v2"
}
] | 2017-06-07 | [
[
"Philipp",
"Dennis",
""
],
[
"Perlick",
"Volker",
""
],
[
"Puetzfeld",
"Dirk",
""
],
[
"Hackmann",
"Eva",
""
],
[
"Lämmerzahl",
"Claus",
""
]
] | We present a definition of the geoid that is based on the formalism of general relativity without approximations; i.e. it allows for arbitrarily strong gravitational fields. For this reason, it applies not only to the Earth and other planets but also to compact objects such as neutron stars. We define the geoid as a le... |
gr-qc/0312013 | Amos Ori | Amos Ori | Harmonic-gauge dipole metric perturbations for weak-field circular
orbits in Schwarzschild spacetime | Latex | Phys.Rev. D70 (2004) 124027 | 10.1103/PhysRevD.70.124027 | null | gr-qc | null | We calculate the harmonic-gauge even l=1 mode of the linear metric
perturbation (MP) produced by a particle in a weak-field circular orbit around
a Schwarzschild black hole (BH). We focus on the Newtonian limit, i.e. the
limit in which the mass M of the central BH approaches zero (while fixing the
orbital radius and ... | [
{
"created": "Tue, 2 Dec 2003 09:00:11 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Ori",
"Amos",
""
]
] | We calculate the harmonic-gauge even l=1 mode of the linear metric perturbation (MP) produced by a particle in a weak-field circular orbit around a Schwarzschild black hole (BH). We focus on the Newtonian limit, i.e. the limit in which the mass M of the central BH approaches zero (while fixing the orbital radius and th... |
gr-qc/9506019 | Coussaert Olivier | O. Coussaert, M. Henneaux and P. van Driel | The asymptotic dynamics of three-dimensional Einstein gravity with a
negative cosmological constant | 10 pages in LaTeX, LaTeX problem fixed | Class.Quant.Grav. 12 (1995) 2961-2966 | 10.1088/0264-9381/12/12/012 | ULB-TH/95/08 | gr-qc | null | Liouville theory is shown to describe the asymptotic dynamics of
three-dimensional Einstein gravity with a negative cosmological constant. This
is because (i) Chern-Simons theory with a gauge group $SL(2,R) \times SL(2,R)$
on a space-time with a cylindrical boundary is equivalent to the non-chiral
$SL(2,R)$ WZW model... | [
{
"created": "Thu, 8 Jun 1995 09:16:16 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jun 1995 10:18:41 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Coussaert",
"O.",
""
],
[
"Henneaux",
"M.",
""
],
[
"van Driel",
"P.",
""
]
] | Liouville theory is shown to describe the asymptotic dynamics of three-dimensional Einstein gravity with a negative cosmological constant. This is because (i) Chern-Simons theory with a gauge group $SL(2,R) \times SL(2,R)$ on a space-time with a cylindrical boundary is equivalent to the non-chiral $SL(2,R)$ WZW model; ... |
1504.04695 | Sun Zhang | Sun Zhang | On Noether approach in the cosmological model with scalar and gauge
fields: symmetries and the selection rule | null | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, based on the works of Capozziello et al., we have studied the
Noether symmetry approach in the cosmological model with scalar and gauge
fields proposed recently by Soda et al. The correct Noether symmetries and
related Lie algebra are given according to the minisuperspace quantum
cosmological model. Th... | [
{
"created": "Sat, 18 Apr 2015 08:52:40 GMT",
"version": "v1"
}
] | 2015-04-21 | [
[
"Zhang",
"Sun",
""
]
] | In this paper, based on the works of Capozziello et al., we have studied the Noether symmetry approach in the cosmological model with scalar and gauge fields proposed recently by Soda et al. The correct Noether symmetries and related Lie algebra are given according to the minisuperspace quantum cosmological model. The ... |
2407.09569 | Bivudutta Mishra Dr. | Y. Kalpana Devi, S.A. Narawade, B. Mishra | Constraining Parameters for the Accelerating Universe in
$f(R,\mathcal{L}_{m})$ Gravity | 12 pages, 10 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the paper, we present an accelerating cosmological model in
$f(R,\mathcal{L}_{m})$ gravity with the parameter constrained through the
cosmological data sets. At the beginning, we have employed a functional form of
$f(R,\mathcal{L}_{m}) =\frac{R}{2}+\alpha R^2+\mathcal{L}_{m}^\beta$, where
$\alpha$ and $\beta$ are ... | [
{
"created": "Tue, 9 Jul 2024 07:12:13 GMT",
"version": "v1"
}
] | 2024-07-16 | [
[
"Devi",
"Y. Kalpana",
""
],
[
"Narawade",
"S. A.",
""
],
[
"Mishra",
"B.",
""
]
] | In the paper, we present an accelerating cosmological model in $f(R,\mathcal{L}_{m})$ gravity with the parameter constrained through the cosmological data sets. At the beginning, we have employed a functional form of $f(R,\mathcal{L}_{m}) =\frac{R}{2}+\alpha R^2+\mathcal{L}_{m}^\beta$, where $\alpha$ and $\beta$ are mo... |
1506.03897 | Vladimir Folomeev | Vladimir Dzhunushaliev, Vladimir Folomeev, and Ajnur Urazalina | Star-plus-wormhole systems with two interacting scalar fields | 10 pages, 3 figures, minor corrections to content, new references
added, version published in IJMPD. arXiv admin note: text overlap with
arXiv:1401.7093 | Int.J.Mod.Phys. D24 (2015) 14, 1550097 | 10.1142/S0218271815500972 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study static, spherically symmetric mixed configurations with a nontrivial
(wormhole) spacetime topology provided by the presence of two interacting ghost
scalar fields. Wormhole is assumed to be filled by a perfect relativistic
neutron fluid modeled by a polytropic equation of state. For such mixed
configurations... | [
{
"created": "Fri, 12 Jun 2015 05:10:51 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Sep 2015 07:35:41 GMT",
"version": "v2"
}
] | 2015-09-08 | [
[
"Dzhunushaliev",
"Vladimir",
""
],
[
"Folomeev",
"Vladimir",
""
],
[
"Urazalina",
"Ajnur",
""
]
] | We study static, spherically symmetric mixed configurations with a nontrivial (wormhole) spacetime topology provided by the presence of two interacting ghost scalar fields. Wormhole is assumed to be filled by a perfect relativistic neutron fluid modeled by a polytropic equation of state. For such mixed configurations, ... |
1411.5154 | Titus K Mathew | Athira Sasidharan and Titus K. Mathew | Bulk viscous matter and recent acceleration of the Universe | 14 figures | EPJ C 75 348 2015 | 10.1140/epjc/s10052-015-3567-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a cosmological model dominated by bulk viscous matter with total
bulk viscosity coefficient proportional to the velocity and acceleration of the
expansion of the universe in such a way that
$\zeta=\zeta_{0}+\zeta_{1}\frac{\dot{a}}{a}+\zeta_{2}\frac{\ddot{a}}{\dot{a}}.$
We show that there exist two limitin... | [
{
"created": "Wed, 19 Nov 2014 09:22:31 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Dec 2014 06:19:27 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Apr 2016 05:34:47 GMT",
"version": "v3"
}
] | 2016-04-28 | [
[
"Sasidharan",
"Athira",
""
],
[
"Mathew",
"Titus K.",
""
]
] | We consider a cosmological model dominated by bulk viscous matter with total bulk viscosity coefficient proportional to the velocity and acceleration of the expansion of the universe in such a way that $\zeta=\zeta_{0}+\zeta_{1}\frac{\dot{a}}{a}+\zeta_{2}\frac{\ddot{a}}{\dot{a}}.$ We show that there exist two limiting ... |
2401.04561 | Subhash Chandra Mahapatra | Ayan Daripa, Subhash Mahapatra | Analytic three-dimensional primary hair charged black holes with
Coulomb-like electrodynamics and their thermodynamics | 31 pages, many figures. arXiv admin note: text overlap with
arXiv:2305.09172 | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We construct and discuss new solutions of primary hair charged black holes in
asymptotically Anti-de Sitter (AdS) space that have well-defined Coulomb-like
potential in three dimensions. The gauge field source to the Einstein equation
is a power-Maxwell nonlinear electrodynamics with traceless energy-momentum
tensor.... | [
{
"created": "Tue, 9 Jan 2024 13:57:37 GMT",
"version": "v1"
}
] | 2024-01-10 | [
[
"Daripa",
"Ayan",
""
],
[
"Mahapatra",
"Subhash",
""
]
] | We construct and discuss new solutions of primary hair charged black holes in asymptotically Anti-de Sitter (AdS) space that have well-defined Coulomb-like potential in three dimensions. The gauge field source to the Einstein equation is a power-Maxwell nonlinear electrodynamics with traceless energy-momentum tensor. T... |
2306.08898 | Alejandro Torres-Orjuela | Alejandro Torres-Orjuela | Detecting intermediate-mass black hole binaries with atom interferometer
observatories: Using the resonant mode for the merger phase | Submitted to 'AVS Quantum Science' for the special issue on "Large
Scale Quantum Detectors" | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Atom interferometry detectors like AION, ZAIGA, and AEDGE will be able to
detect gravitational waves (GWs) at dHz covering the band between large
space-based laser interferometers LISA/TianQin/Taiji and ground-based
facilities LIGO/Virgo/KAGRA. They will detect the late inspiral and merger of
GW sources containing in... | [
{
"created": "Thu, 15 Jun 2023 07:05:20 GMT",
"version": "v1"
}
] | 2023-06-16 | [
[
"Torres-Orjuela",
"Alejandro",
""
]
] | Atom interferometry detectors like AION, ZAIGA, and AEDGE will be able to detect gravitational waves (GWs) at dHz covering the band between large space-based laser interferometers LISA/TianQin/Taiji and ground-based facilities LIGO/Virgo/KAGRA. They will detect the late inspiral and merger of GW sources containing inte... |
2210.15007 | Mert Mangut | Mustafa Halilsoy, Mert Mangut and Chia-Li Hsieh | Stationary, charged Zipoy-Voorhees metric from colliding wave spacetime | A section has been added | General Relativity and Gravitation 2023 | 10.1007/s10714-023-03151-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Through the Ernst formalism we provide expression for a class of colliding
Einstein-Maxwell (EM) metrics with cross polarization. Local isometry is
imposed as a means to transform interaction region of the spacetime into
stationary, charged Zipoy-Voorhees (ZV) metric in Schwarzschild coordinates.
The ZV-metric is kno... | [
{
"created": "Wed, 26 Oct 2022 20:04:58 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Mar 2023 10:22:43 GMT",
"version": "v2"
},
{
"created": "Fri, 15 Sep 2023 18:35:37 GMT",
"version": "v3"
}
] | 2023-09-19 | [
[
"Halilsoy",
"Mustafa",
""
],
[
"Mangut",
"Mert",
""
],
[
"Hsieh",
"Chia-Li",
""
]
] | Through the Ernst formalism we provide expression for a class of colliding Einstein-Maxwell (EM) metrics with cross polarization. Local isometry is imposed as a means to transform interaction region of the spacetime into stationary, charged Zipoy-Voorhees (ZV) metric in Schwarzschild coordinates. The ZV-metric is known... |
gr-qc/9607042 | null | Fran\c{c}ois Goy | Clock Synchronisation in Inertial Frames and Gravitational Fields | 4 pages, Latex; contribution to the Journees Relativistes, 1996 | null | null | null | gr-qc | null | The special relativistic test theory of Mansouri and Sexl is sketched.
Theories based on different clock synchronisations are found to be equivalent
to special relativity, as regards experimental results. The conventionality of
clock synchronisation is shown not to hold, by means of an example, in a simple
accelerate... | [
{
"created": "Sat, 20 Jul 1996 10:51:43 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Goy",
"François",
""
]
] | The special relativistic test theory of Mansouri and Sexl is sketched. Theories based on different clock synchronisations are found to be equivalent to special relativity, as regards experimental results. The conventionality of clock synchronisation is shown not to hold, by means of an example, in a simple accelerated ... |
1102.1749 | David McKechan | D. J. A. McKechan | On the use of higher order waveforms in the search for gravitational
waves emitted by compact binary coalescences | arXiv admin note: substantial text overlap with arXiv:1003.2939 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This thesis concerns the use, in gravitational wave data analysis, of higher
order waveform models of the gravitational radiation emitted by compact binary
coalescences. We begin with an introductory chapter that includes an overview
of the theory of general relativity, gravitational radiation and ground-based
interf... | [
{
"created": "Tue, 8 Feb 2011 23:17:53 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Oct 2011 17:42:47 GMT",
"version": "v2"
}
] | 2015-03-18 | [
[
"McKechan",
"D. J. A.",
""
]
] | This thesis concerns the use, in gravitational wave data analysis, of higher order waveform models of the gravitational radiation emitted by compact binary coalescences. We begin with an introductory chapter that includes an overview of the theory of general relativity, gravitational radiation and ground-based interfer... |
gr-qc/9707037 | Michael A. Clayton | M.A. Clayton | Homothetic Wyman Spacetimes | 15 pages with 6 figures; requires amsart, amssymb, amsmath, graphicx;
formatted for publication in Int. J. Mod. Phys. D | Int.J.Mod.Phys. D7 (1998) 261-278 | 10.1142/S0218271898000218 | CERN--TH/97--166 | gr-qc | null | The time-dependent, spherically symmetric, Wyman sector of the Unified Field
Theory is shown to be equivalent to a self-gravitating scalar field with a
positive-definite, repulsive self-interaction potential. A homothetic symmetry
is imposed on the fundamental tensor, and the resulting autonomous system is
numericall... | [
{
"created": "Wed, 16 Jul 1997 14:57:53 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Oct 1997 08:01:43 GMT",
"version": "v2"
}
] | 2009-10-30 | [
[
"Clayton",
"M. A.",
""
]
] | The time-dependent, spherically symmetric, Wyman sector of the Unified Field Theory is shown to be equivalent to a self-gravitating scalar field with a positive-definite, repulsive self-interaction potential. A homothetic symmetry is imposed on the fundamental tensor, and the resulting autonomous system is numerically ... |
1407.0125 | Haidar Sheikhahmadi | Haidar Sheikhahmadi, Ali Aghamohammadi and Khaled Saaidi | The effect of de Sitter like background on increasing the zero point
budget of dark energy | 11 pages, 3 figures | Advances in High Energy Physics, Volume 2016-05, Article ID
2594189, (2016) | 10.1155/2016/2594189 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | During this work, using subtraction renormalization mechanism, zero point
quantum fluctuations for bosonic scalar fields in a de-Sitter like background
are investigated. By virtue of the observed value for spectral index, $n_s(k)$,
for massive scalar field the best value for the first slow roll parameter,
$\epsilon$,... | [
{
"created": "Tue, 1 Jul 2014 07:35:32 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Jul 2014 09:21:29 GMT",
"version": "v2"
},
{
"created": "Sat, 5 Jul 2014 20:07:47 GMT",
"version": "v3"
},
{
"created": "Wed, 18 Feb 2015 09:53:19 GMT",
"version": "v4"
},
{
"crea... | 2016-06-13 | [
[
"Sheikhahmadi",
"Haidar",
""
],
[
"Aghamohammadi",
"Ali",
""
],
[
"Saaidi",
"Khaled",
""
]
] | During this work, using subtraction renormalization mechanism, zero point quantum fluctuations for bosonic scalar fields in a de-Sitter like background are investigated. By virtue of the observed value for spectral index, $n_s(k)$, for massive scalar field the best value for the first slow roll parameter, $\epsilon$, i... |
2210.15633 | Virgo Publications | F. Acernese, M. Agathos, A. Ain, S. Albanesi, A. Allocca, A. Amato, T.
Andrade, N. Andres, M. Andr\'es-Carcasona, T. Andri\'c, S. Ansoldi, S.
Antier, T. Apostolatos, E. Z. Appavuravther, M. Ar\`ene, N. Arnaud, M.
Assiduo, S. Assis de Souza Melo, P. Astone, F. Aubin, S. Babak, F. Badaracco,
M. K. M. Bader, S. Ba... | Virgo Detector Characterization and Data Quality: results from the O3
run | 57 pages, 18 figures. New version, resubmitted to Class. and Quantum
Grav. This is the "Results" part of preprint arXiv:2205.01555 [gr-qc] which
has been split into two companion articles: one about the tools and methods,
the other about the analyses of the O3 Virgo data | null | 10.1088/1361-6382/acd92d | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | The Advanced Virgo detector has contributed with its data to the rapid growth
of the number of detected gravitational-wave (GW) signals in the past few
years, alongside the two Advanced LIGO instruments. First during the last month
of the Observation Run 2 (O2) in August 2017 (with, most notably, the compact
binary m... | [
{
"created": "Fri, 14 Oct 2022 15:56:54 GMT",
"version": "v1"
},
{
"created": "Sat, 25 Mar 2023 16:25:57 GMT",
"version": "v2"
}
] | 2023-08-16 | [
[
"Acernese",
"F.",
""
],
[
"Agathos",
"M.",
""
],
[
"Ain",
"A.",
""
],
[
"Albanesi",
"S.",
""
],
[
"Allocca",
"A.",
""
],
[
"Amato",
"A.",
""
],
[
"Andrade",
"T.",
""
],
[
"Andres",
"N.",
""
... | The Advanced Virgo detector has contributed with its data to the rapid growth of the number of detected gravitational-wave (GW) signals in the past few years, alongside the two Advanced LIGO instruments. First during the last month of the Observation Run 2 (O2) in August 2017 (with, most notably, the compact binary mer... |
0912.2327 | Betti Hartmann | Eva Hackmann, Betti Hartmann, Claus Laemmerzahl and Parinya Sirimachan | The complete set of solutions of the geodesic equations in the
space-time of a Schwarzschild black hole pierced by a cosmic string | 21 pages; section 3 shortened, references added; accepted for
publication in Phys. Rev. D | Phys.Rev.D81:064016,2010 | 10.1103/PhysRevD.81.064016 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the geodesic equations in the space-time of a Schwarzschild black
hole pierced by an infinitely thin cosmic string and give the complete set of
analytical solutions of these equations for massive and massless particles,
respectively. The solutions of the geodesic equations can be classified
according to the ... | [
{
"created": "Fri, 11 Dec 2009 19:58:13 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Feb 2010 14:41:37 GMT",
"version": "v2"
}
] | 2010-04-21 | [
[
"Hackmann",
"Eva",
""
],
[
"Hartmann",
"Betti",
""
],
[
"Laemmerzahl",
"Claus",
""
],
[
"Sirimachan",
"Parinya",
""
]
] | We study the geodesic equations in the space-time of a Schwarzschild black hole pierced by an infinitely thin cosmic string and give the complete set of analytical solutions of these equations for massive and massless particles, respectively. The solutions of the geodesic equations can be classified according to the pa... |
gr-qc/0211060 | Sanjay Jhingan | Sanjay Jhingan and Takahiro Tanaka | Improvement on the metric reconstruction scheme in the
Regge-Wheeler-Zerilli formalism | New references added, 9 pages | Phys.Rev. D67 (2003) 104018 | 10.1103/PhysRevD.67.104018 | YITP-02-67 | gr-qc | null | We study master variables in the Regge-Wheeler-Zerilli formalism. We show
that a specific choice of new variables is suitable for studying perturbation
theory from the viewpoint of radiation reaction calculations. With explicit
definition of the improved master variables in terms of components of metric
perturbations... | [
{
"created": "Mon, 18 Nov 2002 03:45:27 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Jun 2003 16:24:25 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Jhingan",
"Sanjay",
""
],
[
"Tanaka",
"Takahiro",
""
]
] | We study master variables in the Regge-Wheeler-Zerilli formalism. We show that a specific choice of new variables is suitable for studying perturbation theory from the viewpoint of radiation reaction calculations. With explicit definition of the improved master variables in terms of components of metric perturbations, ... |
1011.4921 | Giovanni Marozzi Dr. | Giovanni Marozzi | The cosmological backreaction: gauge (in)dependence, observers and
scalars | 16 pages, no figures. Comments and references added, errors and typos
corrected, conclusions unchanged. Comment added and typos corrected, version
published in JCAP | JCAP 1101:012,2011 | 10.1088/1475-7516/2011/01/012 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss several issues related to a recent proposal for defining classical
spatial averages to be used in the so-called cosmological backreaction problem.
In the large averaging-volume limit all gauge dependence disappears and
different averages can be univocally characterized by the observers associated
with diff... | [
{
"created": "Mon, 22 Nov 2010 20:00:44 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Dec 2010 15:55:28 GMT",
"version": "v2"
},
{
"created": "Fri, 14 Jan 2011 17:36:36 GMT",
"version": "v3"
}
] | 2011-07-14 | [
[
"Marozzi",
"Giovanni",
""
]
] | We discuss several issues related to a recent proposal for defining classical spatial averages to be used in the so-called cosmological backreaction problem. In the large averaging-volume limit all gauge dependence disappears and different averages can be univocally characterized by the observers associated with differ... |
2112.05728 | Michele Mancarella | Michele Mancarella, Edwin Genoud-Prachex, Michele Maggiore | Cosmology and modified gravitational wave propagation from binary black
hole population models | 15+6 pages, 7 figures, code $\tt{MGCosmoPop}$ available at
\url{https://github.com/CosmoStatGW/MGCosmoPop}. v2: minor changes, matches
version to appear on PRD | null | 10.1103/PhysRevD.105.064030 | null | gr-qc astro-ph.CO astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | A joint hierarchical Bayesian analysis of the binary black hole (BBH) mass
function, merger rate evolution and cosmological parameters can be used to
extract information on both the cosmological and population parameters. We
extend this technique to include the effect of modified gravitational wave (GW)
propagation. ... | [
{
"created": "Fri, 10 Dec 2021 18:32:22 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Mar 2022 22:50:02 GMT",
"version": "v2"
}
] | 2022-04-06 | [
[
"Mancarella",
"Michele",
""
],
[
"Genoud-Prachex",
"Edwin",
""
],
[
"Maggiore",
"Michele",
""
]
] | A joint hierarchical Bayesian analysis of the binary black hole (BBH) mass function, merger rate evolution and cosmological parameters can be used to extract information on both the cosmological and population parameters. We extend this technique to include the effect of modified gravitational wave (GW) propagation. We... |
0712.1256 | Muhammad Sharif | M. Sharif and M. Jamil Amir | Teleparallel Energy-Momentum Distribution of Spatially Homogeneous
Rotating Spacetimes | 12 pages, accepted for publication in Int. J. Theor. Phys | Int.J.Theor.Phys.47:1742-1750,2008 | 10.1007/s10773-007-9616-7 | null | gr-qc | null | The energy-momentum distribution of spatially homogeneous rotating spacetimes
in the context of teleparallel theory of gravity is investigated. For this
purpose, we use the teleparallel version of Moller prescription. It is found
that the components of energy-momentum density are finite and well-defined but
are diffe... | [
{
"created": "Sat, 8 Dec 2007 03:19:30 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Sharif",
"M.",
""
],
[
"Amir",
"M. Jamil",
""
]
] | The energy-momentum distribution of spatially homogeneous rotating spacetimes in the context of teleparallel theory of gravity is investigated. For this purpose, we use the teleparallel version of Moller prescription. It is found that the components of energy-momentum density are finite and well-defined but are differe... |
1806.02899 | Mohamed Lamine Abdelali | M. L. Abdelali, N. Mebarki | Redshift effects implications on revised models of Stephan's quintet | 15 pages, 1 table, 1 figure, uses jcappub.sty | Modern Physics Letters A, 35(01), 1950342 (2020) | 10.1142/S0217732319503425 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent observations of Stephan's Quintet gave new indications on its
formation scenario. Older formation and a role of NCG 7317 should be considered
in revised numerical models of the compact group. Velocities of group members
to recreate are estimated from redshift measurements. Several effects
contribute to observe... | [
{
"created": "Thu, 7 Jun 2018 20:56:29 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Aug 2018 11:17:55 GMT",
"version": "v2"
}
] | 2020-03-17 | [
[
"Abdelali",
"M. L.",
""
],
[
"Mebarki",
"N.",
""
]
] | Recent observations of Stephan's Quintet gave new indications on its formation scenario. Older formation and a role of NCG 7317 should be considered in revised numerical models of the compact group. Velocities of group members to recreate are estimated from redshift measurements. Several effects contribute to observed ... |
2101.10598 | Chinmay Gandevikar | Chinmay N. Gandevikar, Divyesh N. Solanki, Dipanjan Dey | Post-Newtonian properties of EMRI with Power Law Potential | 12 pages, 8 figures | null | 10.1140/epjc/s10052-021-09500-2 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | There are many astrophysical scenarios where extreme mass ratio inspiral
(EMRI) binaries can be surrounded by matter distribution. The distribution of
mass can affect the dynamical properties (e.g. orbital frequency, average
energy radiation rate, etc.) of the EMRI. In this matter distribution, instead
of Kepler-Newt... | [
{
"created": "Tue, 26 Jan 2021 07:15:23 GMT",
"version": "v1"
}
] | 2021-09-01 | [
[
"Gandevikar",
"Chinmay N.",
""
],
[
"Solanki",
"Divyesh N.",
""
],
[
"Dey",
"Dipanjan",
""
]
] | There are many astrophysical scenarios where extreme mass ratio inspiral (EMRI) binaries can be surrounded by matter distribution. The distribution of mass can affect the dynamical properties (e.g. orbital frequency, average energy radiation rate, etc.) of the EMRI. In this matter distribution, instead of Kepler-Newton... |
1711.01772 | Chun-Yen Lin | Jerzy Lewandowski and Chun-Yen Lin | Quantum Reference Frames via Transition Amplitudes in Timeless Quantum
Gravity | Updated journal version | Phys. Rev. D 98, 026023 (2018) | 10.1103/PhysRevD.98.026023 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose an algorithm of extracting Schr\"odinger theories under all viable
physical time from the Einstein-Hilbert path integral, formulated as the
timeless transition amplitudes $\hat{\mathbb{P}}:\mathbb{K} \to \mathbb{K}^*$
between the boundary states in a kinematic Hilbert space $\mathbb{K}$. Each of
these Schr... | [
{
"created": "Mon, 6 Nov 2017 08:11:27 GMT",
"version": "v1"
},
{
"created": "Sat, 21 Jul 2018 08:50:30 GMT",
"version": "v2"
}
] | 2018-07-25 | [
[
"Lewandowski",
"Jerzy",
""
],
[
"Lin",
"Chun-Yen",
""
]
] | We propose an algorithm of extracting Schr\"odinger theories under all viable physical time from the Einstein-Hilbert path integral, formulated as the timeless transition amplitudes $\hat{\mathbb{P}}:\mathbb{K} \to \mathbb{K}^*$ between the boundary states in a kinematic Hilbert space $\mathbb{K}$. Each of these Schr\"... |
gr-qc/0007008 | Frans Pretorius | Frans Pretorius and Matthew W. Choptuik | Gravitational collapse in 2+1 dimensional AdS spacetime | 31 pages, 20 figures, LaTeX. Replaced with version to be published in
Phys. Rev. D | Phys.Rev. D62 (2000) 124012 | 10.1103/PhysRevD.62.124012 | null | gr-qc hep-th | null | We present results of numerical simulations of the formation of black holes
from the gravitational collapse of a massless, minimally-coupled scalar field
in 2+1 dimensional, axially-symmetric, anti de-Sitter (AdS) spacetime. The
geometry exterior to the event horizon approaches the BTZ solution, showing no
evidence o... | [
{
"created": "Thu, 6 Jul 2000 03:37:54 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Nov 2000 09:38:20 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Pretorius",
"Frans",
""
],
[
"Choptuik",
"Matthew W.",
""
]
] | We present results of numerical simulations of the formation of black holes from the gravitational collapse of a massless, minimally-coupled scalar field in 2+1 dimensional, axially-symmetric, anti de-Sitter (AdS) spacetime. The geometry exterior to the event horizon approaches the BTZ solution, showing no evidence of ... |
1304.4074 | Ryan Behunin | R. O. Behunin, D. A. R. Dalvit, R. S. Decca, and C. C. Speake | Limits on the accuracy of isoelectronic gravity measurements at short
separation due to patch potentials | 5 pages, 5 figures | null | 10.1103/PhysRevD.89.051301 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In force sensing experiments intended to measure non-Newtonian gravitational
signals electrostatic patch potentials can give rise to spurious forces,
torques, and noise. Undesired patch-induced interactions can lead to systematic
effects which limit accuracy, and noise can place lower limits on precision. In
this pap... | [
{
"created": "Mon, 15 Apr 2013 12:48:57 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Behunin",
"R. O.",
""
],
[
"Dalvit",
"D. A. R.",
""
],
[
"Decca",
"R. S.",
""
],
[
"Speake",
"C. C.",
""
]
] | In force sensing experiments intended to measure non-Newtonian gravitational signals electrostatic patch potentials can give rise to spurious forces, torques, and noise. Undesired patch-induced interactions can lead to systematic effects which limit accuracy, and noise can place lower limits on precision. In this paper... |
2012.03994 | Alejandro Asc\'arate | Alejandro Asc\'arate | The Spacetime Picture in Quantum Gravity | 20 pages, accepted for publication in Class. Quantum Grav | null | 10.1088/1361-6382/abcbde | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | We propose an approach which, by combining insights from Loop Quantum Gravity
(LQG), Topos theory, Non-commutative Geometry \`a la Connes, and spacetime
relationalism, provides fertile ground for the search of an adequate spacetime
picture in Quantum Gravity. With this approach, we obtain a novel way of
deducing the ... | [
{
"created": "Mon, 7 Dec 2020 19:07:31 GMT",
"version": "v1"
},
{
"created": "Sun, 28 Feb 2021 16:48:16 GMT",
"version": "v2"
},
{
"created": "Wed, 10 Mar 2021 22:41:54 GMT",
"version": "v3"
}
] | 2021-03-12 | [
[
"Ascárate",
"Alejandro",
""
]
] | We propose an approach which, by combining insights from Loop Quantum Gravity (LQG), Topos theory, Non-commutative Geometry \`a la Connes, and spacetime relationalism, provides fertile ground for the search of an adequate spacetime picture in Quantum Gravity. With this approach, we obtain a novel way of deducing the qu... |
1809.07409 | Robert Brandenberger | Robert Brandenberger, Rodrigo R. Cuzinatto, J\"urg Fr\"ohlich and Ryo
Namba | New Scalar Field Quartessence | 6 pages | null | 10.1088/1475-7516/2019/02/043 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a cosmological scenario involving a scalar field, $\varphi$, that
is a source of Dark Matter as well as of Dark Energy. Besides $\varphi$, the
Lagrangian of the field theory envisaged in our scenario contains a second
field $\chi$, for simplicity assumed to be a scalar, too. For fixed values of
$\chi$, the... | [
{
"created": "Tue, 18 Sep 2018 12:04:23 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Feb 2019 15:44:23 GMT",
"version": "v2"
}
] | 2019-02-27 | [
[
"Brandenberger",
"Robert",
""
],
[
"Cuzinatto",
"Rodrigo R.",
""
],
[
"Fröhlich",
"Jürg",
""
],
[
"Namba",
"Ryo",
""
]
] | We propose a cosmological scenario involving a scalar field, $\varphi$, that is a source of Dark Matter as well as of Dark Energy. Besides $\varphi$, the Lagrangian of the field theory envisaged in our scenario contains a second field $\chi$, for simplicity assumed to be a scalar, too. For fixed values of $\chi$, the p... |
0912.1517 | Tomislav Prokopec | Jeroen G. Burgers, Christiaan L. M. Mantz, Tomislav Prokopec | The Newtonian Limit of Hermitian Gravity | The published version in Gen. Rel. Grav. 24 pages, no figures | null | 10.1007/s10714-012-1465-x | SPIN-09/46; ITP-UU-09/56 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct the gauge invariant potentials of Hermitian Gravity and derive
the linearized equations of motion they obey. A comparison reveals a striking
similarity to the Bardeen potentials of general relativity. We then consider
the response to a point particle source, and discuss in what sense the
solutions of Her... | [
{
"created": "Tue, 8 Dec 2009 15:05:05 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Oct 2012 08:27:51 GMT",
"version": "v2"
}
] | 2012-10-25 | [
[
"Burgers",
"Jeroen G.",
""
],
[
"Mantz",
"Christiaan L. M.",
""
],
[
"Prokopec",
"Tomislav",
""
]
] | We construct the gauge invariant potentials of Hermitian Gravity and derive the linearized equations of motion they obey. A comparison reveals a striking similarity to the Bardeen potentials of general relativity. We then consider the response to a point particle source, and discuss in what sense the solutions of Hermi... |
1602.01492 | Francisco Lobo | Francisco Cabral, Francisco S. N. Lobo | Electrodynamics and spacetime geometry I: Foundations | 21 pages | Found Phys (2017) 47: 208 | 10.1007/s10701-016-0051-6 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the intimate connection between spacetime geometry and
electrodynamics. This link is already implicit in the constitutive relations
between the field strengths and excitations, which are an essential part of the
axiomatic structure of electromagnetism, clearly formulated via integration
theory and differen... | [
{
"created": "Wed, 3 Feb 2016 21:56:46 GMT",
"version": "v1"
}
] | 2017-02-14 | [
[
"Cabral",
"Francisco",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | We explore the intimate connection between spacetime geometry and electrodynamics. This link is already implicit in the constitutive relations between the field strengths and excitations, which are an essential part of the axiomatic structure of electromagnetism, clearly formulated via integration theory and differenti... |
1007.2662 | Richard Woodard | Sohyun Park and R. P. Woodard (University of Florida) | Solving the Effective Field Equations for the Newtonian Potential | 15 pages, uses LaTeX2e | Class.Quant.Grav.27:245008,2010 | 10.1088/0264-9381/27/24/245008 | UFIFT-QG-10-06 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Loop corrections to the gravitational potential are usually inferred from
scattering amplitudes, which seems quite different from how the linearized
Einstein equations are solved with a static, point mass to give the classical
potential. In this study we show how the Schwinger-Keldysh effective field
equations can be... | [
{
"created": "Thu, 15 Jul 2010 21:30:15 GMT",
"version": "v1"
}
] | 2010-12-06 | [
[
"Park",
"Sohyun",
"",
"University of Florida"
],
[
"Woodard",
"R. P.",
"",
"University of Florida"
]
] | Loop corrections to the gravitational potential are usually inferred from scattering amplitudes, which seems quite different from how the linearized Einstein equations are solved with a static, point mass to give the classical potential. In this study we show how the Schwinger-Keldysh effective field equations can be u... |
2305.04947 | Shahar Hod | Shahar Hod | Universal lower bound on orbital periods around central compact objects | 12 pages | The European Physical Journal C (Letter) 83, 655 (2023) | 10.1140/epjc/s10052-023-11844-w | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | It is proved, using the curved line element of a spherically symmetric
charged object in general relativity and the Schwinger discharge mechanism of
quantum field theory, that the orbital periods $T_{\infty}$ of test particles
around central compact objects as measured by flat-space asymptotic observers
are fundament... | [
{
"created": "Mon, 8 May 2023 18:00:01 GMT",
"version": "v1"
}
] | 2023-09-29 | [
[
"Hod",
"Shahar",
""
]
] | It is proved, using the curved line element of a spherically symmetric charged object in general relativity and the Schwinger discharge mechanism of quantum field theory, that the orbital periods $T_{\infty}$ of test particles around central compact objects as measured by flat-space asymptotic observers are fundamental... |
1503.08911 | Antony Speranza | Ted Jacobson and Antony J. Speranza | Variations on an aethereal theme | References added, discussion improved in section IV.C. 13 pages, 2
columns | Phys. Rev. D 92, 044030 (2015) | 10.1103/PhysRevD.92.044030 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a class of Lorentz-violating theories of gravity involving a
timelike unit vector field (the aether) coupled to a metric, two examples being
Einstein-aether theory and Ho\v{r}ava gravity. The action always includes the
Ricci scalar of the metric and the invariants quadratic in covariant
derivatives of the... | [
{
"created": "Tue, 31 Mar 2015 04:39:24 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Aug 2015 23:02:17 GMT",
"version": "v2"
}
] | 2015-09-01 | [
[
"Jacobson",
"Ted",
""
],
[
"Speranza",
"Antony J.",
""
]
] | We consider a class of Lorentz-violating theories of gravity involving a timelike unit vector field (the aether) coupled to a metric, two examples being Einstein-aether theory and Ho\v{r}ava gravity. The action always includes the Ricci scalar of the metric and the invariants quadratic in covariant derivatives of the a... |
2311.17151 | Ivica Smoli\'c | Ana Bokuli\'c, Edgardo Franzin, Tajron Juri\'c, Ivica Smoli\'c | Lagrangian reverse engineering for regular black holes | 8 pages; ver.2: one sentence added, version accepted for publication
in Physics Letters B | Phys. Lett. B 854 (2024) 138750 | 10.1016/j.physletb.2024.138750 | ZTF-EP-23-08 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Nonlinear extensions of classical Maxwell's electromagnetism are among the
prominent candidates for theories admitting regular black hole solutions. A
quest for such examples has been fruitful, but mostly unsystematic and littered
by the introduction of physically unrealistic Lagrangians. We provide a
procedure which... | [
{
"created": "Tue, 28 Nov 2023 19:00:01 GMT",
"version": "v1"
},
{
"created": "Wed, 29 May 2024 22:06:47 GMT",
"version": "v2"
}
] | 2024-05-31 | [
[
"Bokulić",
"Ana",
""
],
[
"Franzin",
"Edgardo",
""
],
[
"Jurić",
"Tajron",
""
],
[
"Smolić",
"Ivica",
""
]
] | Nonlinear extensions of classical Maxwell's electromagnetism are among the prominent candidates for theories admitting regular black hole solutions. A quest for such examples has been fruitful, but mostly unsystematic and littered by the introduction of physically unrealistic Lagrangians. We provide a procedure which a... |
2207.01295 | Emmanuele Battista Dr. | Emmanuele Battista, Harold C. Steinacker | On the propagation across the big bounce in an open quantum FLRW
cosmology | v2: version accepted for publication in EPJ C; conclusions have been
slightly expanded and new references have been added | null | 10.1140/epjc/s10052-022-10874-0 | UWThPh-2022-10 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The propagation of a scalar field in an open FLRW bounce-type quantum
spacetime is examined, which arises within the framework of the IKKT matrix
theory. In the first part of the paper, we employ general-relativity tools to
study null and timelike geodesics at the classical level. This analysis reveals
that massless ... | [
{
"created": "Mon, 4 Jul 2022 09:55:20 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Oct 2022 15:55:29 GMT",
"version": "v2"
}
] | 2022-10-11 | [
[
"Battista",
"Emmanuele",
""
],
[
"Steinacker",
"Harold C.",
""
]
] | The propagation of a scalar field in an open FLRW bounce-type quantum spacetime is examined, which arises within the framework of the IKKT matrix theory. In the first part of the paper, we employ general-relativity tools to study null and timelike geodesics at the classical level. This analysis reveals that massless an... |
2106.06704 | Shao-Wen Wei | Shao-Wen Wei, Yu-Xiao Liu | General thermodynamic geometry approach for rotating Kerr anti-de Sitter
black holes | 13 pages and 6 figures | Phys. Rev. D 104, 084087 (2021) | 10.1103/PhysRevD.104.084087 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Combining with the small-large black hole phase transition, the thermodynamic
geometry has been well applied to study the microstructure for the charged AdS
black hole. In this paper, we extend the geometric approach to the rotating
Kerr-AdS black hole and aim to develop a general approach for the Kerr-AdS
black hole... | [
{
"created": "Sat, 12 Jun 2021 07:26:22 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Dec 2021 04:22:46 GMT",
"version": "v2"
}
] | 2021-12-06 | [
[
"Wei",
"Shao-Wen",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | Combining with the small-large black hole phase transition, the thermodynamic geometry has been well applied to study the microstructure for the charged AdS black hole. In this paper, we extend the geometric approach to the rotating Kerr-AdS black hole and aim to develop a general approach for the Kerr-AdS black hole. ... |
1105.4045 | Hossein Farajollahi | H. Farajollahi, A. Salehi, F. Tayebi, A. Ravanpak | Stability Analysis in Tachyonic Potential Chameleon cosmology | 20 pages, 13 figures | JCAP 05(2011)017 | 10.1088/1475-7516/2011/05/017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study general properties of attractors for tachyonic potential chameleon
scalar-field model which possess cosmological scaling solutions. An analytic
formulation is given to obtain fixed points with a discussion on their
stability. The model predicts a dynamical equation of state parameter with
phantom crossing be... | [
{
"created": "Fri, 20 May 2011 09:17:23 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Jun 2011 04:54:19 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Farajollahi",
"H.",
""
],
[
"Salehi",
"A.",
""
],
[
"Tayebi",
"F.",
""
],
[
"Ravanpak",
"A.",
""
]
] | We study general properties of attractors for tachyonic potential chameleon scalar-field model which possess cosmological scaling solutions. An analytic formulation is given to obtain fixed points with a discussion on their stability. The model predicts a dynamical equation of state parameter with phantom crossing beha... |
gr-qc/9710007 | Kirill Krasnov | A. Ashtekar, J. Baez, A. Corichi and K. Krasnov | Quantum Geometry and Black Hole Entropy | Revtex, 8 pages, 1 figure | Phys.Rev.Lett. 80 (1998) 904-907 | 10.1103/PhysRevLett.80.904 | CGPG-97/9-3 | gr-qc hep-th | null | A `black hole sector' of non-perturbative canonical quantum gravity is
introduced. The quantum black hole degrees of freedom are shown to be described
by a Chern-Simons field theory on the horizon. It is shown that the entropy of
a large non-rotating black hole is proportional to its horizon area. The
constant of pro... | [
{
"created": "Wed, 1 Oct 1997 20:43:41 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Ashtekar",
"A.",
""
],
[
"Baez",
"J.",
""
],
[
"Corichi",
"A.",
""
],
[
"Krasnov",
"K.",
""
]
] | A `black hole sector' of non-perturbative canonical quantum gravity is introduced. The quantum black hole degrees of freedom are shown to be described by a Chern-Simons field theory on the horizon. It is shown that the entropy of a large non-rotating black hole is proportional to its horizon area. The constant of propo... |
gr-qc/0308056 | Carlos Augusto Romero Filho | F.Dahia and C.Romero | On the embedding of branes in five-dimensional spaces | 12 pages - REVTEX To appear in Classical and Quantum Gravity | Class.Quant.Grav. 21 (2004) 927-934 | 10.1088/0264-9381/21/4/012 | null | gr-qc hep-th | null | We investigate the embedding of four-dimensional branes in five-dimensional
spaces. We firstly consider the case when the embedding space is a vacuum bulk
whose energy-momentum tensor consists of a Dirac delta function with support in
the brane. We then consider the embedding in the context of
Randall-Sundrum-type mo... | [
{
"created": "Tue, 19 Aug 2003 02:08:22 GMT",
"version": "v1"
},
{
"created": "Sat, 20 Dec 2003 13:53:36 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Dahia",
"F.",
""
],
[
"Romero",
"C.",
""
]
] | We investigate the embedding of four-dimensional branes in five-dimensional spaces. We firstly consider the case when the embedding space is a vacuum bulk whose energy-momentum tensor consists of a Dirac delta function with support in the brane. We then consider the embedding in the context of Randall-Sundrum-type mode... |
2007.09492 | Valeriy Obukhov | Valeriy Obukhov | Separation of variables in Hamilton-Jacobi equation for a charged test
particle in the Stackel spaces of type (2.0) | 17 pagas, submitted to Symmetry | Symmetry.(2020),12, 8, 2432 | 10.3390/SYM12081289 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Found all equivalence classes for electromagnetic potentials and space-time
metrics of Stackel spaces, provided that the equations of motion of the
classical charged test particles are integrated by the method of complete
separation of variables in the Hamilton- Jacobi equation. Separation is carried
out using the co... | [
{
"created": "Sat, 18 Jul 2020 18:10:22 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Dec 2020 13:14:52 GMT",
"version": "v2"
}
] | 2020-12-14 | [
[
"Obukhov",
"Valeriy",
""
]
] | Found all equivalence classes for electromagnetic potentials and space-time metrics of Stackel spaces, provided that the equations of motion of the classical charged test particles are integrated by the method of complete separation of variables in the Hamilton- Jacobi equation. Separation is carried out using the comp... |
gr-qc/0406033 | Sujit Chatterjee | D.Panigrahi, Y.Z.Zhang and S.Chatterjee | Multidimensional inhomogeneous cosmology in scalar tensor theory | 12 pages, 2 figures | Int.J.Mod.Phys. D14 (2005) 1083 | 10.1142/S0218271805007000 | null | gr-qc | null | Exact cosmological solutions are obtained for a five dimensional
inhomogeneous fluid distribution along with a Brans-Dicke type of scalar field.
The set includes varied forms of matter field including $\rho+p=0$, where p is
the 3D isotropic pressure. Depending on the signature of 4-space curvature our
solutions admit... | [
{
"created": "Tue, 8 Jun 2004 14:17:24 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Panigrahi",
"D.",
""
],
[
"Zhang",
"Y. Z.",
""
],
[
"Chatterjee",
"S.",
""
]
] | Exact cosmological solutions are obtained for a five dimensional inhomogeneous fluid distribution along with a Brans-Dicke type of scalar field. The set includes varied forms of matter field including $\rho+p=0$, where p is the 3D isotropic pressure. Depending on the signature of 4-space curvature our solutions admit o... |
1012.4287 | Judy Kupferman | Judy Kupferman | Divergence on the Horizon | 8 pages, 3 figures. Contribution to the proceedings of DICE 2010 | J. Phys.: Conf. Ser. 306 012025, 2011 | 10.1088/1742-6596/306/1/012025 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole entropy has been shown by 't Hooft to diverge at the horizon,
whereas entanglement entropy in general does not. We show that because the
region near the horizon is a thermal state, entropy is linear to energy, and
energy at a barrier is inversely proportional to barrier slope, and diverges at
an infinitely... | [
{
"created": "Mon, 20 Dec 2010 11:20:09 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Jan 2011 12:06:40 GMT",
"version": "v2"
}
] | 2015-05-20 | [
[
"Kupferman",
"Judy",
""
]
] | Black hole entropy has been shown by 't Hooft to diverge at the horizon, whereas entanglement entropy in general does not. We show that because the region near the horizon is a thermal state, entropy is linear to energy, and energy at a barrier is inversely proportional to barrier slope, and diverges at an infinitely s... |
1012.1481 | Ahmadjon Abdujabbarov | Ozodbek Rahimov | Magnetized Particle Motion Around Black Hole in Braneworld | 10 pages, 1 figure, accepted for publication in Mod. Phys. Lett. A | Mod.Phys.Lett.A26:399-408,2011 | 10.1142/S0217732311034931 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the motion of a magnetized particle orbiting around a black
hole in braneworld placed in asymptotically uniform magnetic field. The
influence of brane parameter on effective potential of the radial motion of
magnetized spinning particle around the braneworld black hole using
Hamilton-Jacobi formalism i... | [
{
"created": "Tue, 7 Dec 2010 11:57:11 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jul 2011 06:03:56 GMT",
"version": "v2"
}
] | 2015-03-17 | [
[
"Rahimov",
"Ozodbek",
""
]
] | We investigate the motion of a magnetized particle orbiting around a black hole in braneworld placed in asymptotically uniform magnetic field. The influence of brane parameter on effective potential of the radial motion of magnetized spinning particle around the braneworld black hole using Hamilton-Jacobi formalism is ... |
2309.15528 | Antoni Ramos-Buades | Antoni Ramos-Buades, Alessandra Buonanno and Jonathan Gair | Bayesian inference of binary black holes with inspiral-merger-ringdown
waveforms using two eccentric parameters | null | null | null | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Orbital eccentricity is a crucial physical effect to unveil the origin of
compact-object binaries detected by ground- and spaced-based gravitational-wave
(GW) observatories. Here, we perform for the first time a Bayesian inference
study of inspiral-merger-ringdown eccentric waveforms for binary black holes
with non-p... | [
{
"created": "Wed, 27 Sep 2023 09:44:32 GMT",
"version": "v1"
}
] | 2023-09-28 | [
[
"Ramos-Buades",
"Antoni",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Gair",
"Jonathan",
""
]
] | Orbital eccentricity is a crucial physical effect to unveil the origin of compact-object binaries detected by ground- and spaced-based gravitational-wave (GW) observatories. Here, we perform for the first time a Bayesian inference study of inspiral-merger-ringdown eccentric waveforms for binary black holes with non-pre... |
1503.07476 | Vaibhav Tiwari | Vaibhav Tiwari, Marco Drago, Valery Frolov, Sergey Klimenko, Guenakh
Mitselmakher, Valentin Necula, Giovanni Prodi, Virginia Re, Francesco Salemi,
Gabriele Vedovato, and Igor Yakushin | Regression of Environmental Noise in LIGO Data | null | null | 10.1088/0264-9381/32/16/165014 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We address the problem of noise regression in the output of
gravitational-wave (GW) interferometers, using data from the physical
environmental monitors (PEM). The objective of the regression analysis is to
predict environmental noise in the gravitational-wave channel from the PEM
measurements. One of the most promis... | [
{
"created": "Wed, 25 Mar 2015 17:54:58 GMT",
"version": "v1"
}
] | 2015-08-26 | [
[
"Tiwari",
"Vaibhav",
""
],
[
"Drago",
"Marco",
""
],
[
"Frolov",
"Valery",
""
],
[
"Klimenko",
"Sergey",
""
],
[
"Mitselmakher",
"Guenakh",
""
],
[
"Necula",
"Valentin",
""
],
[
"Prodi",
"Giovanni",
""
],... | We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the regression analysis is to predict environmental noise in the gravitational-wave channel from the PEM measurements. One of the most promisin... |
2304.08455 | Ryan Unger | Christoph Kehle and Ryan Unger | Event horizon gluing and black hole formation in vacuum: the very slowly
rotating case | 27 pages + references. 5 figures | null | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we initiate the study of characteristic event horizon gluing
in vacuum. More precisely, we prove that Minkowski space can be glued along a
null hypersurface to any round symmetry sphere in a Schwarzschild black hole
spacetime as a $C^2$ solution of the Einstein vacuum equations. The method of
proof is ... | [
{
"created": "Mon, 17 Apr 2023 17:26:54 GMT",
"version": "v1"
}
] | 2023-04-18 | [
[
"Kehle",
"Christoph",
""
],
[
"Unger",
"Ryan",
""
]
] | In this paper, we initiate the study of characteristic event horizon gluing in vacuum. More precisely, we prove that Minkowski space can be glued along a null hypersurface to any round symmetry sphere in a Schwarzschild black hole spacetime as a $C^2$ solution of the Einstein vacuum equations. The method of proof is fu... |
2010.15039 | S. N Sajadi | S. N. Sajadi, Robert B. Mann, N. Riazi, Saeed Fakhry | Analytically Approximation Solution to Higher Derivative Gravity | 17 pages, 47 figures, Accepted in PRD | null | 10.1103/PhysRevD.102.124026 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain analytical approximate black hole solutions for higher derivative
gravity in the presence of Maxwell electromagnetic source. We construct near
horizon and asymptotic solutions and then use these to obtain an approximate
analytic solution using a continued fraction method to get a complete solution.
We compu... | [
{
"created": "Wed, 28 Oct 2020 15:22:33 GMT",
"version": "v1"
}
] | 2020-12-16 | [
[
"Sajadi",
"S. N.",
""
],
[
"Mann",
"Robert B.",
""
],
[
"Riazi",
"N.",
""
],
[
"Fakhry",
"Saeed",
""
]
] | We obtain analytical approximate black hole solutions for higher derivative gravity in the presence of Maxwell electromagnetic source. We construct near horizon and asymptotic solutions and then use these to obtain an approximate analytic solution using a continued fraction method to get a complete solution. We compute... |
gr-qc/0309031 | Llu\'is Bel | Ll. Bel | Time dependence of c and its concomitants | Latex, 11 pages | null | null | null | gr-qc | null | As we showed in a preceding arXiv:gr-qc Einstein equations, conveniently
written, provide the more orthodox and simple description of cosmological
models with a time dependent speed of light $c$. We derive here the concomitant
dependence of the electric permittivity $\epsilon$, the magnetic permeability
$\mu$, the un... | [
{
"created": "Fri, 5 Sep 2003 10:37:49 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bel",
"Ll.",
""
]
] | As we showed in a preceding arXiv:gr-qc Einstein equations, conveniently written, provide the more orthodox and simple description of cosmological models with a time dependent speed of light $c$. We derive here the concomitant dependence of the electric permittivity $\epsilon$, the magnetic permeability $\mu$, the unit... |
2201.04442 | Misbah Shahzadi | Misbah Shahzadi, Martin Kolo\v{s}, Zden\v{e}k Stuchl\'ik and Yousaf
Habib | Testing alternative theories of gravity by fitting the hot-spot data of
Sgr A* | 23 pages, 2 captioned figures | The European Physical Journal C, 82, (2022) | 10.1140/epjc/s10052-022-10347-4 | null | gr-qc astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We are fitting dynamics of electrically neutral hot-spot orbiting around Sgr
A* source in Galactic center, represented by various modifications of the
standard Kerr black hole (BH), to the three flares observed by the GRAVITY
instrument on May 27, July 22, July 28, 2018. We consider stationary,
axisymmetric and asymp... | [
{
"created": "Wed, 12 Jan 2022 12:33:50 GMT",
"version": "v1"
}
] | 2024-03-19 | [
[
"Shahzadi",
"Misbah",
""
],
[
"Kološ",
"Martin",
""
],
[
"Stuchlík",
"Zdeněk",
""
],
[
"Habib",
"Yousaf",
""
]
] | We are fitting dynamics of electrically neutral hot-spot orbiting around Sgr A* source in Galactic center, represented by various modifications of the standard Kerr black hole (BH), to the three flares observed by the GRAVITY instrument on May 27, July 22, July 28, 2018. We consider stationary, axisymmetric and asympto... |
0810.5076 | Alexander Kamenshchik | A.A. Andrianov, F. Cannata, A.Y. Kamenshchik, D. Regoli | Phantom without phantom or how the PT symmetry saves us from the Big Rip | revised and enlarged version, to be published in Int. J. Mod. Phys.
D, the title is changed | International Journal of Modern Physics D 19, 97-111 (2010) | 10.1142/S0218271810016269 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the PT symmetric flat Friedmann model of two scalar fields with
positive kinetic terms. While the potential of one ("normal") field is taken
real, that of the other field is complex. We study a complex classical solution
of the system of the two Klein-Gordon equations together with the Friedmann
equation.... | [
{
"created": "Tue, 28 Oct 2008 16:39:25 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Nov 2009 16:09:17 GMT",
"version": "v2"
}
] | 2010-02-11 | [
[
"Andrianov",
"A. A.",
""
],
[
"Cannata",
"F.",
""
],
[
"Kamenshchik",
"A. Y.",
""
],
[
"Regoli",
"D.",
""
]
] | We consider the PT symmetric flat Friedmann model of two scalar fields with positive kinetic terms. While the potential of one ("normal") field is taken real, that of the other field is complex. We study a complex classical solution of the system of the two Klein-Gordon equations together with the Friedmann equation. T... |
1908.10075 | Keisuke Nakashi | Keisuke Nakashi and Takahisa Igata | Effect of a second compact object on stable circular orbits | 11 pages, 7 figures, v2: matches published version in PRD | Phys. Rev. D 100, 104006 (2019) | 10.1103/PhysRevD.100.104006 | RUP-19-24 | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate how stable circular orbits around a main compact object appear
depending on the presence of a second one by using the Majumudar--Papapetrou
dihole spacetime, which consists of the two extremal Reissner--Nordstr\" om
black holes with different masses. While the parameter range of the separation
of the t... | [
{
"created": "Tue, 27 Aug 2019 08:25:17 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Nov 2019 05:53:56 GMT",
"version": "v2"
}
] | 2019-11-07 | [
[
"Nakashi",
"Keisuke",
""
],
[
"Igata",
"Takahisa",
""
]
] | We investigate how stable circular orbits around a main compact object appear depending on the presence of a second one by using the Majumudar--Papapetrou dihole spacetime, which consists of the two extremal Reissner--Nordstr\" om black holes with different masses. While the parameter range of the separation of the two... |
1005.1460 | H. Kleinert | H. Kleinert | New Gauge Symmetry in Gravity and the Evanescent Role of Torsion | Improved version, 5 pages and 5 figures | Electron.J.Theor.Phys.24:287,2010 | 10.1142/9789814335614_0016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If the Einstein-Hilbert action ${\cal L}_{\rm EH}\propto R$ is re-expressed
in Riemann-Cartan spacetime using the gauge fields of translations, the
vierbein field $h^\alpha{}_\mu$, and the gauge field of local Lorentz
transformations, the spin connection $A_{\mu \alpha}{}^ \beta $, there exists a
new gauge symmetry w... | [
{
"created": "Mon, 10 May 2010 06:37:43 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Jun 2010 17:30:56 GMT",
"version": "v2"
}
] | 2017-08-23 | [
[
"Kleinert",
"H.",
""
]
] | If the Einstein-Hilbert action ${\cal L}_{\rm EH}\propto R$ is re-expressed in Riemann-Cartan spacetime using the gauge fields of translations, the vierbein field $h^\alpha{}_\mu$, and the gauge field of local Lorentz transformations, the spin connection $A_{\mu \alpha}{}^ \beta $, there exists a new gauge symmetry whi... |
2202.12037 | Jorge Ovalle | J. Ovalle | Warped vacuum energy by black holes | 5 pages, 5 figures | Eur. Phys. J. C, 82 (2022) 170 | 10.1140/epjc/s10052-022-10094-6 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The belief still persists, at least for an important part of the community,
that in general relativity the cosmological constant $\Lambda$ must remain
immaculate. However, Bianchi identities show that $\Lambda$ could acquire local
properties in the presence of matter, i.e.,
$\Lambda\rightarrow\,\Lambda(x^\mu)$. In th... | [
{
"created": "Thu, 24 Feb 2022 11:35:39 GMT",
"version": "v1"
}
] | 2022-02-25 | [
[
"Ovalle",
"J.",
""
]
] | The belief still persists, at least for an important part of the community, that in general relativity the cosmological constant $\Lambda$ must remain immaculate. However, Bianchi identities show that $\Lambda$ could acquire local properties in the presence of matter, i.e., $\Lambda\rightarrow\,\Lambda(x^\mu)$. In this... |
gr-qc/9406003 | Hisaaki Shinkai | Laurens Gunnarsen, Hisa-aki Shinkai and Kei-ichi Maeda | Finding Principal Null Direction for Numerical Relativists | 10 pages, LaTeX style, WU-AP/38/93. Figures are available (hard
copies) upon requests [shinkai@cfi.waseda.ac.jp (H.Shinkai)] | Class. Quantum Grav. 12 (1995) 133-140 | 10.1088/0264-9381/12/1/011 | null | gr-qc | null | We present a new method for finding principal null directions (PNDs). Because
our method assumes as input the intrinsic metric and extrinsic curvature of a
spacelike hypersurface, it should be particularly useful to numerical
relativists. We illustrate our method by finding the PNDs of the
Kastor-Traschen spacetimes,... | [
{
"created": "Thu, 2 Jun 1994 06:43:56 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Gunnarsen",
"Laurens",
""
],
[
"Shinkai",
"Hisa-aki",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | We present a new method for finding principal null directions (PNDs). Because our method assumes as input the intrinsic metric and extrinsic curvature of a spacelike hypersurface, it should be particularly useful to numerical relativists. We illustrate our method by finding the PNDs of the Kastor-Traschen spacetimes, w... |
2404.04595 | Antonio Vicente-Becerril | Guillermo A. Mena Marug\'an, Antonio Vicente-Becerril and Jes\'us
Y\'ebana Carrilero | Analytic and Numerical Study of Scalar Perturbations in Loop Quantum
Cosmology | 13 pages, 4 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The possibility that quantum geometry effects may alleviate the apparent
tensions existing at large angular scales in the observations of the Cosmic
Microwave Background explains the increasing interest in considering primordial
perturbations within the framework of Loop Quantum Cosmology. In this
framework, a number... | [
{
"created": "Sat, 6 Apr 2024 11:38:22 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jul 2024 10:03:02 GMT",
"version": "v2"
}
] | 2024-07-26 | [
[
"Marugán",
"Guillermo A. Mena",
""
],
[
"Vicente-Becerril",
"Antonio",
""
],
[
"Carrilero",
"Jesús Yébana",
""
]
] | The possibility that quantum geometry effects may alleviate the apparent tensions existing at large angular scales in the observations of the Cosmic Microwave Background explains the increasing interest in considering primordial perturbations within the framework of Loop Quantum Cosmology. In this framework, a number o... |
2206.08867 | Andrey A. Shoom | Andrey A. Shoom | Faraday effect of light caused by plane gravitational wave | 6 pages, 2 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Gravitational field can cause a rotation of polarisation plane of light. This
phenomenon is known as the gravitational Faraday effect. We study the
gravitational Faraday effect of linearly polarised light propagating in the
gravitational field of a weak plane gravitational wave (GW) with $+$, $\times$,
and elliptical... | [
{
"created": "Fri, 17 Jun 2022 16:12:35 GMT",
"version": "v1"
}
] | 2022-06-20 | [
[
"Shoom",
"Andrey A.",
""
]
] | Gravitational field can cause a rotation of polarisation plane of light. This phenomenon is known as the gravitational Faraday effect. We study the gravitational Faraday effect of linearly polarised light propagating in the gravitational field of a weak plane gravitational wave (GW) with $+$, $\times$, and elliptical p... |
2008.03918 | Avani Patel | Avani Patel | Modified Gravity Corrections in Fundamental Orbital Frequencies in Kerr
Spacetime | 10 pages, 3 figures, 1 table | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As a first step towards the calculation of waveform of Extreme Mass Ratio
Inspirals for Modified Gravity theories, we calculate the orbital frequencies
of a Small Compact Object inspiralling into a super massive blackhole for a
Nonlocal gravity model. The small compact object moves along an orbit which can
be approxi... | [
{
"created": "Mon, 10 Aug 2020 06:40:55 GMT",
"version": "v1"
}
] | 2020-08-11 | [
[
"Patel",
"Avani",
""
]
] | As a first step towards the calculation of waveform of Extreme Mass Ratio Inspirals for Modified Gravity theories, we calculate the orbital frequencies of a Small Compact Object inspiralling into a super massive blackhole for a Nonlocal gravity model. The small compact object moves along an orbit which can be approxima... |
gr-qc/9405050 | null | George E.A. Matsas | Do Inertial Electric Charges Radiate with Respect to Uniformly
Accelerated Observers? | 6 pages (REVTEX 3.0), IFT-P017/94 | Gen.Rel.Grav.26:1165-1169,1994 | 10.1007/BF02108941 | null | gr-qc | null | We revisit the long standing problem of analyzing an inertial electric charge
from the point of view of uniformly accelerated observers in the context of
semi-classical gravity. We choose a suitable set of accelerated observers with
respect to which there is no photon emission coming from the inertial charge.
We disc... | [
{
"created": "Mon, 23 May 1994 15:01:00 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Matsas",
"George E. A.",
""
]
] | We revisit the long standing problem of analyzing an inertial electric charge from the point of view of uniformly accelerated observers in the context of semi-classical gravity. We choose a suitable set of accelerated observers with respect to which there is no photon emission coming from the inertial charge. We discus... |
1408.2226 | Alexander Silenko | Alexander J. Silenko | Quantum-mechanical description of Lense-Thirring effect for relativistic
scalar particles | 9 pages. arXiv admin note: substantial text overlap with
arXiv:1305.6378 | Physics of Particles and Nuclei Letters 10 (2013) 637 | 10.1134/S1547477113070157 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Exact expression for the Foldy-Wouthuysen Hamiltonian of scalar particles is
used for a quantum-mechanical description of the relativistic Lense-Thirring
effect. The exact evolution of the angular momentum operator in the Kerr field
approximated by a spatially isotropic metric is found. The quantum-mechanical
descrip... | [
{
"created": "Sun, 10 Aug 2014 13:20:22 GMT",
"version": "v1"
}
] | 2014-08-12 | [
[
"Silenko",
"Alexander J.",
""
]
] | Exact expression for the Foldy-Wouthuysen Hamiltonian of scalar particles is used for a quantum-mechanical description of the relativistic Lense-Thirring effect. The exact evolution of the angular momentum operator in the Kerr field approximated by a spatially isotropic metric is found. The quantum-mechanical descripti... |
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