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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0504078 | Andrea Barbieri | A. Barbieri, E. Guadagnini | Gravitational helicity interaction | 16 pages, 1 figure, to be published in Nuclear Physics B | Nucl.Phys.B719:53-66,2005 | 10.1016/j.nuclphysb.2005.04.023 | IFUP-TH/09-05 | gr-qc | null | For gravitational deflections of massless particles of given helicity from a
classical rotating body, we describe the general relativity corrections to the
geometric optics approximation. We compute the corresponding scattering cross
sections for neutrinos, photons and gravitons to lowest order in the
gravitational c... | [
{
"created": "Mon, 18 Apr 2005 07:52:52 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Barbieri",
"A.",
""
],
[
"Guadagnini",
"E.",
""
]
] | For gravitational deflections of massless particles of given helicity from a classical rotating body, we describe the general relativity corrections to the geometric optics approximation. We compute the corresponding scattering cross sections for neutrinos, photons and gravitons to lowest order in the gravitational cou... |
1001.1387 | Glenn Barnich | Glenn Barnich | The Coulomb solution as a coherent state of unphysical photons | 5 pages Latex file, Proceedings of the 2nd School on Quantum Gravity
and Quantum Geometry, Corfu 2009. Cosmetic changes, agrees with version to be
published. | General Relativity and Gravitation 2010 | 10.1007/s10714-010-0984-6 | ULB-TH/10-01 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of the problem of what micro-states are responsible for the
entropy of black holes, we consider as a physical toy model the electromagnetic
Coulomb solution. By quantizing the electromagnetic field in the presence of an
external source of charge Q, the quantum state corresponding to the Coulomb
solutio... | [
{
"created": "Sat, 9 Jan 2010 00:31:49 GMT",
"version": "v1"
},
{
"created": "Sun, 18 Apr 2010 22:53:45 GMT",
"version": "v2"
}
] | 2010-12-09 | [
[
"Barnich",
"Glenn",
""
]
] | In the context of the problem of what micro-states are responsible for the entropy of black holes, we consider as a physical toy model the electromagnetic Coulomb solution. By quantizing the electromagnetic field in the presence of an external source of charge Q, the quantum state corresponding to the Coulomb solution ... |
0706.2098 | Jerome Perez | Julien Larena (LUTH, ObS. Paris-Meudon, France); Jerome Perez (Applied
Math Lab., ENSTA, PAris, France) | Integrability of anisotropic and homogeneous Universes in scalar-tensor
theory of gravitation | 16 pages, no figure, accepted in CQG | Class.Quant.Grav.24:2901-2915,2007 | 10.1088/0264-9381/24/11/008 | null | gr-qc | null | In this paper, we develop a method based on the analysis of the Kovalewski
exponents to study the integrability of anisotropic and homogeneous Universes.
The formalism is developed in scalar-tensor gravity, the general relativistic
case appearing as a special case of this larger framework. Then, depending on
the rati... | [
{
"created": "Thu, 14 Jun 2007 11:53:22 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Larena",
"Julien",
"",
"LUTH, ObS. Paris-Meudon, France"
],
[
"Perez",
"; Jerome",
"",
"Applied\n Math Lab., ENSTA, PAris, France"
]
] | In this paper, we develop a method based on the analysis of the Kovalewski exponents to study the integrability of anisotropic and homogeneous Universes. The formalism is developed in scalar-tensor gravity, the general relativistic case appearing as a special case of this larger framework. Then, depending on the ration... |
gr-qc/0012085 | Alberto Saa | E. Gunzig, A. Saa, L. Brenig, V. Faraoni, T.M. Rocha Filho, and A.
Figueiredo | Superinflation, quintessence, and nonsingular cosmologies | 4 pages, 2 figures | Phys.Rev. D63 (2001) 067301 | 10.1103/PhysRevD.63.067301 | null | gr-qc | null | The dynamics of a universe dominated by a self-interacting nonminimally
coupled scalar field are considered. The structure of the phase space and
complete phase portraits are given. New dynamical behaviors include
superinflation ($\dot{H}>0$), avoidance of big bang singularities through
classical birth of the univers... | [
{
"created": "Wed, 20 Dec 2000 23:07:11 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Gunzig",
"E.",
""
],
[
"Saa",
"A.",
""
],
[
"Brenig",
"L.",
""
],
[
"Faraoni",
"V.",
""
],
[
"Filho",
"T. M. Rocha",
""
],
[
"Figueiredo",
"A.",
""
]
] | The dynamics of a universe dominated by a self-interacting nonminimally coupled scalar field are considered. The structure of the phase space and complete phase portraits are given. New dynamical behaviors include superinflation ($\dot{H}>0$), avoidance of big bang singularities through classical birth of the universe,... |
gr-qc/9707020 | Petr Hajicek | P. Hajicek and J. Kijowski | Lagrangian and Hamiltonian formalism for discontinuous fluid and
gravitational field | 48 pages, Latex 2e file, no figures | Phys.Rev.D57:914-935,1998; Erratum-ibid.D61:129901,2000 | 10.1103/PhysRevD.57.914 10.1103/PhysRevD.61.129901 | BUTP-96/18 | gr-qc | null | The barotropic ideal fluid with step and delta-function discontinuities
coupled to Einstein's gravity is studied. The discontinuities represent star
surfaces and thin shells; only non-intersecting discontinuity hypersurfaces are
considered. No symmetry (like eg. the spherical symmetry) is assumed. The
symplectic stru... | [
{
"created": "Wed, 9 Jul 1997 13:54:59 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Hajicek",
"P.",
""
],
[
"Kijowski",
"J.",
""
]
] | The barotropic ideal fluid with step and delta-function discontinuities coupled to Einstein's gravity is studied. The discontinuities represent star surfaces and thin shells; only non-intersecting discontinuity hypersurfaces are considered. No symmetry (like eg. the spherical symmetry) is assumed. The symplectic struct... |
1203.1315 | Mahouton J. Stephane Houndjo Dr | M. R. Setare and M. J. S. Houndjo | Finite-time future singularities models in $f(T)$ gravity and the
effects of viscosity | 17 pages, Accepted for publication in Canadian Journal of Physics | Can. J. Phys. 91 (2013) 260-267 | 10.1139/cjp-2012-0533 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate models of future finite-time singularities in $f(T)$ theory,
where $T$ is the torsion scalar. The algebraic function $f(T)$ is put as the
teleparallel term $T$ plus an arbitrary function $g(T)$. A suitable expression
of the Hubble parameter is assumed and constraints are imposed in order to
provide an ... | [
{
"created": "Tue, 6 Mar 2012 20:49:30 GMT",
"version": "v1"
},
{
"created": "Sun, 22 Jul 2012 05:03:38 GMT",
"version": "v2"
},
{
"created": "Thu, 31 Jan 2013 06:55:30 GMT",
"version": "v3"
}
] | 2013-03-26 | [
[
"Setare",
"M. R.",
""
],
[
"Houndjo",
"M. J. S.",
""
]
] | We investigate models of future finite-time singularities in $f(T)$ theory, where $T$ is the torsion scalar. The algebraic function $f(T)$ is put as the teleparallel term $T$ plus an arbitrary function $g(T)$. A suitable expression of the Hubble parameter is assumed and constraints are imposed in order to provide an ex... |
gr-qc/0302041 | Buonanno | Alessandra Buonanno, Yanbei Chen and Nergis Mavalvala | Quantum noise in laser-interferometer gravitational-wave detectors with
a heterodyne readout scheme | 16 pages, 8 figures | Phys.Rev.D67:122005,2003 | 10.1103/PhysRevD.67.122005 | null | gr-qc | null | We analyze and discuss the quantum noise in signal-recycled laser
interferometer gravitational-wave detectors, such as Advanced LIGO, using a
heterodyne readout scheme and taking into account the optomechanical dynamics.
Contrary to homodyne detection, a heterodyne readout scheme can simultaneously
measure more than ... | [
{
"created": "Tue, 11 Feb 2003 14:11:19 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Buonanno",
"Alessandra",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Mavalvala",
"Nergis",
""
]
] | We analyze and discuss the quantum noise in signal-recycled laser interferometer gravitational-wave detectors, such as Advanced LIGO, using a heterodyne readout scheme and taking into account the optomechanical dynamics. Contrary to homodyne detection, a heterodyne readout scheme can simultaneously measure more than on... |
1910.00339 | Jun-Jin Peng | Jun-Jin Peng, Chang-Li Zou | Generalized Komar currents for vector fields | 26 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, on basis of three quadratic differential operators leaving the
form degree of an arbitrary differential form unchanged, that is, the
d'Alembertian operator and two combined ones from the Hodge coderivative and
the exterior derivative, the usual Komar current for a Killing vector is
formulated into anot... | [
{
"created": "Tue, 1 Oct 2019 12:32:17 GMT",
"version": "v1"
},
{
"created": "Sun, 5 Jun 2022 01:11:51 GMT",
"version": "v2"
}
] | 2022-06-07 | [
[
"Peng",
"Jun-Jin",
""
],
[
"Zou",
"Chang-Li",
""
]
] | In this paper, on basis of three quadratic differential operators leaving the form degree of an arbitrary differential form unchanged, that is, the d'Alembertian operator and two combined ones from the Hodge coderivative and the exterior derivative, the usual Komar current for a Killing vector is formulated into anothe... |
1405.7288 | Valerio Faraoni | Valerio Faraoni, James B. Dent, and Emmanuel N. Saridakis | Covariantizing the interaction between dark energy and dark matter | Typographical errors corrected, bibliography expanded and updated,
matches version to appear in Phys. Rev. D | Phys. Rev. D 90, 063510 (2014) | 10.1103/PhysRevD.90.063510 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Coupling dark energy and dark matter through an effective fluid description
is a very common procedure in cosmology, however it always remains in comoving
coordinates in the special FLRW space. We construct a consistent, general, and
covariant formulation, where the interaction is a natural implication of the
imperfe... | [
{
"created": "Wed, 28 May 2014 16:06:25 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Sep 2014 13:47:28 GMT",
"version": "v2"
}
] | 2014-09-17 | [
[
"Faraoni",
"Valerio",
""
],
[
"Dent",
"James B.",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | Coupling dark energy and dark matter through an effective fluid description is a very common procedure in cosmology, however it always remains in comoving coordinates in the special FLRW space. We construct a consistent, general, and covariant formulation, where the interaction is a natural implication of the imperfect... |
0705.3625 | Kostyantyn Ropotenko | K.Ropotenko | Universal Bound on Dynamical Relaxation Time from Condition for Relaxing
Quantity to be Classical | 3 pages, no figures | null | null | null | gr-qc | null | It is shown that the Hod's universal bound on the relaxation time of a
perturbed system \cite{hod} can be derived from a well-known condition for a
relaxing quantity to be classical in the fluctuation theory.
| [
{
"created": "Thu, 24 May 2007 17:27:19 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jun 2007 17:56:00 GMT",
"version": "v2"
}
] | 2007-06-07 | [
[
"Ropotenko",
"K.",
""
]
] | It is shown that the Hod's universal bound on the relaxation time of a perturbed system \cite{hod} can be derived from a well-known condition for a relaxing quantity to be classical in the fluctuation theory. |
gr-qc/0104041 | Scott A. Hughes | Scott A. Hughes | Evolution of circular, non-equatorial orbits of Kerr black holes due to
gravitational-wave emission: II. Inspiral trajectories and gravitational
waveforms | 15 pages, 11 figures, accepted for publication in PRD. This version
incorporates referee's comments, and is much less verbose | Phys.Rev. D64 (2001) 064004 | 10.1103/PhysRevD.64.064004 | NSF-ITP-01-28 | gr-qc astro-ph | null | The inspiral of a ``small'' ($\mu \sim 1-100 M_\odot$) compact body into a
``large'' ($M \sim 10^{5-7} M_\odot$) black hole is a key source of
gravitational radiation for the space-based gravitational-wave observatory
LISA. The waves from such inspirals will probe the extreme strong-field nature
of the Kerr metric. I... | [
{
"created": "Fri, 13 Apr 2001 23:16:07 GMT",
"version": "v1"
},
{
"created": "Thu, 24 May 2001 22:01:45 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Hughes",
"Scott A.",
""
]
] | The inspiral of a ``small'' ($\mu \sim 1-100 M_\odot$) compact body into a ``large'' ($M \sim 10^{5-7} M_\odot$) black hole is a key source of gravitational radiation for the space-based gravitational-wave observatory LISA. The waves from such inspirals will probe the extreme strong-field nature of the Kerr metric. In ... |
2203.08139 | Geoffrey Lovelace | Francois Foucart, Pablo Laguna, Geoffrey Lovelace, David Radice, and
Helvi Witek | Snowmass2021 Cosmic Frontier White Paper: Numerical relativity for
next-generation gravitational-wave probes of fundamental physics | contribution to Snowmass 2021 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The next generation of gravitational-wave detectors, conceived to begin
operations in the 2030s, will probe fundamental physics with exquisite
sensitivity. These observations will measure the equation of state of dense
nuclear matter in the most extreme environments in the universe, reveal with
exquisite fidelity the... | [
{
"created": "Tue, 15 Mar 2022 17:58:35 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Mar 2022 14:36:57 GMT",
"version": "v2"
},
{
"created": "Thu, 31 Mar 2022 15:13:47 GMT",
"version": "v3"
}
] | 2022-04-01 | [
[
"Foucart",
"Francois",
""
],
[
"Laguna",
"Pablo",
""
],
[
"Lovelace",
"Geoffrey",
""
],
[
"Radice",
"David",
""
],
[
"Witek",
"Helvi",
""
]
] | The next generation of gravitational-wave detectors, conceived to begin operations in the 2030s, will probe fundamental physics with exquisite sensitivity. These observations will measure the equation of state of dense nuclear matter in the most extreme environments in the universe, reveal with exquisite fidelity the n... |
0912.3386 | Eugen Radu | Carlos Herdeiro, Burkhard Kleihaus, Jutta Kunz and Eugen Radu | On the Bekenstein-Hawking area law for black objects with conical
singularities | 13 pages, no figures; version to appear in Phys. Rev. D | null | 10.1103/PhysRevD.81.064013 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We argue that, when working with the appropriate set of thermodynamical
variables, the Bekenstein-Hawking law still holds for asymptotically flat black
objects with conical singularities. The mass-energy which enters the first law
of thermodynamics does not, however, coincide with the ADM mass; it differs
from the la... | [
{
"created": "Thu, 17 Dec 2009 12:33:30 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Feb 2010 10:17:40 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"Herdeiro",
"Carlos",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Radu",
"Eugen",
""
]
] | We argue that, when working with the appropriate set of thermodynamical variables, the Bekenstein-Hawking law still holds for asymptotically flat black objects with conical singularities. The mass-energy which enters the first law of thermodynamics does not, however, coincide with the ADM mass; it differs from the latt... |
gr-qc/0101090 | Salvatore Capozziello | S. Capozziello, G. Lambiase, H.-J. Schmidt | Asymptotic Freedom in Curvature-Satured Gravity | 9 pages, World Scientific LATEX, to appear in "Fluctuating Paths and
Fields", WSPC Singapore 2001, Eds: W. Janke, A. Pelster, H.-J. Schmidt, M.
Bachmann | null | 10.1142/9789812811240_0059 | null | gr-qc | null | For a spatially flat Friedmann model with line element $ds^2=a^2 [
da^2/B(a)-dx^2-dy^2-dz^2 ] $, the 00-component of the Einstein field equation
reads $8\pi G T_{00}=3/a^2$ containing no derivative. For a nonlinear
Lagrangian ${\cal L}(R)$, we obtain a second--order differential equation for
$B$ instead of the expect... | [
{
"created": "Tue, 23 Jan 2001 17:12:50 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Jan 2001 20:15:34 GMT",
"version": "v2"
}
] | 2016-11-23 | [
[
"Capozziello",
"S.",
""
],
[
"Lambiase",
"G.",
""
],
[
"Schmidt",
"H. -J.",
""
]
] | For a spatially flat Friedmann model with line element $ds^2=a^2 [ da^2/B(a)-dx^2-dy^2-dz^2 ] $, the 00-component of the Einstein field equation reads $8\pi G T_{00}=3/a^2$ containing no derivative. For a nonlinear Lagrangian ${\cal L}(R)$, we obtain a second--order differential equation for $B$ instead of the expected... |
gr-qc/0307003 | Gyula Bene | Ja'nos Maja'r and Gyula Bene (Institute for Theoretical Physics,
Eo"tvo"s University, Budapest) | Breakdown of supersymmetry in homogeneous cosmologies in N=1
supergravity | LaTeX, 5 pages, no figures | null | null | null | gr-qc | null | A condition of supersymmetric cosmological solutions of simple (N=1)
supergravity is formulated in the classical case. As an application we prove
that supersymmetry is spontaneously broken in Friedmann-Robertson-Walker type
cosmologies as well as in the Kasner universe, except for the Minkowski space.
| [
{
"created": "Tue, 1 Jul 2003 04:46:04 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Maja'r",
"Ja'nos",
"",
"Institute for Theoretical Physics,\n Eo\"tvo\"s University, Budapest"
],
[
"Bene",
"Gyula",
"",
"Institute for Theoretical Physics,\n Eo\"tvo\"s University, Budapest"
]
] | A condition of supersymmetric cosmological solutions of simple (N=1) supergravity is formulated in the classical case. As an application we prove that supersymmetry is spontaneously broken in Friedmann-Robertson-Walker type cosmologies as well as in the Kasner universe, except for the Minkowski space. |
gr-qc/0308048 | Theodore A. Jacobson | Ted Jacobson | Introduction to Quantum Fields in Curved Spacetime and the Hawking
Effect | Based on lectures given at the CECS School on Quantum Gravity in
Valdivia, Chile, January 2002, 59 pages, 5 figures; v2 improved explanation
of use of analyticity in Hawking effect derivation; v3 typo fixed in Fig.2 | null | null | null | gr-qc hep-th | null | These notes introduce the subject of quantum field theory in curved spacetime
and some of its applications and the questions they raise. Topics include
particle creation in time-dependent metrics, quantum origin of primordial
perturbations, Hawking effect, the trans-Planckian question, and Hawking
radiation on a latt... | [
{
"created": "Thu, 14 Aug 2003 18:38:16 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Nov 2003 09:43:22 GMT",
"version": "v2"
},
{
"created": "Fri, 9 Apr 2004 19:06:45 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Jacobson",
"Ted",
""
]
] | These notes introduce the subject of quantum field theory in curved spacetime and some of its applications and the questions they raise. Topics include particle creation in time-dependent metrics, quantum origin of primordial perturbations, Hawking effect, the trans-Planckian question, and Hawking radiation on a lattic... |
1010.5327 | Ian Morrison | Donald Marolf, Ian A. Morrison | The IR stability of de Sitter QFT: results at all orders | 30 pp., 4 figures. Small typos fixed, refs added | Phys.Rev.84:044040,2011 | 10.1103/PhysRev8.4.044040 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the Hartle-Hawking vacuum for theories of interacting massive
scalars in de Sitter space is both perturbatively well-defined and stable in
the IR. Correlation functions in this state may be computed on the Euclidean
section and Wick-rotated to Lorentz-signature. The results are manifestly de
Sitter-invar... | [
{
"created": "Tue, 26 Oct 2010 07:47:23 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Nov 2010 08:17:00 GMT",
"version": "v2"
}
] | 2011-08-29 | [
[
"Marolf",
"Donald",
""
],
[
"Morrison",
"Ian A.",
""
]
] | We show that the Hartle-Hawking vacuum for theories of interacting massive scalars in de Sitter space is both perturbatively well-defined and stable in the IR. Correlation functions in this state may be computed on the Euclidean section and Wick-rotated to Lorentz-signature. The results are manifestly de Sitter-invaria... |
2207.09003 | Sumanta Chakraborty | Indrani Banerjee, Sumanta Chakraborty and Soumitra SenGupta | Hunting extra dimensions in the shadow of Sgr A* | v2, published version, 12 pages, 4 figures | Phys. Rev. D 106, 084051 (2022) | 10.1103/PhysRevD.106.084051 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the observed angular diameter of the shadow of the ultra compact
object Sgr A*, favours the existence of an extra spatial dimension. This holds
irrespective of the nature of the ultra compact object, i.e., whether it is a
wormhole or, a black hole mimicker, but with the common feature that both of
them h... | [
{
"created": "Tue, 19 Jul 2022 01:06:28 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Dec 2022 04:54:01 GMT",
"version": "v2"
}
] | 2022-12-07 | [
[
"Banerjee",
"Indrani",
""
],
[
"Chakraborty",
"Sumanta",
""
],
[
"SenGupta",
"Soumitra",
""
]
] | We show that the observed angular diameter of the shadow of the ultra compact object Sgr A*, favours the existence of an extra spatial dimension. This holds irrespective of the nature of the ultra compact object, i.e., whether it is a wormhole or, a black hole mimicker, but with the common feature that both of them hav... |
0803.2684 | Alexander Kamenshchik | I.M. Khalatnikov and A.Yu. Kamenshchik | Lev Landau and the problem of singularities in cosmology | 16 pages, to be published in Physics - Uspekhi | Phys.Usp.51:609-616,2008 | 10.1070/PU2008v051n06ABEH006550 | null | gr-qc hep-th physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider different aspects of the problem of cosmological singularity such
as the BKL oscillatory approach to singularity, the new features of the
cosmological dynamics in the neighbourhood of the singularity in
multidimensional and superstring cosmological models and their connections with
such a modern branch of... | [
{
"created": "Tue, 18 Mar 2008 17:45:00 GMT",
"version": "v1"
}
] | 2014-11-18 | [
[
"Khalatnikov",
"I. M.",
""
],
[
"Kamenshchik",
"A. Yu.",
""
]
] | We consider different aspects of the problem of cosmological singularity such as the BKL oscillatory approach to singularity, the new features of the cosmological dynamics in the neighbourhood of the singularity in multidimensional and superstring cosmological models and their connections with such a modern branch of m... |
2110.13870 | Tao Zhu | Qiang Wu, Tao Zhu, Rui Niu, Wen Zhao, and Anzhong Wang | Constraints on the Nieh-Yan modified teleparallel gravity with
gravitational waves | 11 pages, 2 figures, 1 table; v2: references added, 12 pages; v3:
version appeared in PRD | Phys.Rev.D 105, 024035 (2022) | 10.1103/PhysRevD.105.024035 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | The discovery of gravitational waves (GWs) from the compact binary components
by LIGO/Virgo Collaboration provides an unprecedented opportunity for testing
gravity in the strong and highly dynamical field regime of gravity. Currently a
lot of model-independent tests have been performed by LIGO/Virgo Collaboration
and... | [
{
"created": "Tue, 26 Oct 2021 17:25:24 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Oct 2021 13:27:52 GMT",
"version": "v2"
},
{
"created": "Wed, 9 Feb 2022 09:15:06 GMT",
"version": "v3"
}
] | 2022-02-10 | [
[
"Wu",
"Qiang",
""
],
[
"Zhu",
"Tao",
""
],
[
"Niu",
"Rui",
""
],
[
"Zhao",
"Wen",
""
],
[
"Wang",
"Anzhong",
""
]
] | The discovery of gravitational waves (GWs) from the compact binary components by LIGO/Virgo Collaboration provides an unprecedented opportunity for testing gravity in the strong and highly dynamical field regime of gravity. Currently a lot of model-independent tests have been performed by LIGO/Virgo Collaboration and n... |
1407.4851 | Mariusz P. Dabrowski | Mariusz P. Dabrowski | Are singularities the limits of cosmology? | 15 pages, REVTEX4-1, 1 table, updated to a published reference. arXiv
admin note: text overlap with arXiv:1207.4038 | Published in: Mathematical Structures of the Universe, M.
Eckstein, M. Heller, S.J. Szybka (eds.), Copernicus Center Press, Krak\'ow,
Poland, p. 99-117 (2014) | null | null | gr-qc physics.hist-ph physics.pop-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We refer to the classic definition of a singularity in Einstein's general
relativity (based on geodesic incompletness) as well as to some other criteria
to evaluate the nature of singularities in cosmology. We review what different
(non-Big-Bang) types of singularities are possible even in the simplest
cosmological f... | [
{
"created": "Thu, 17 Jul 2014 22:16:54 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Mar 2021 13:17:32 GMT",
"version": "v2"
}
] | 2021-03-22 | [
[
"Dabrowski",
"Mariusz P.",
""
]
] | We refer to the classic definition of a singularity in Einstein's general relativity (based on geodesic incompletness) as well as to some other criteria to evaluate the nature of singularities in cosmology. We review what different (non-Big-Bang) types of singularities are possible even in the simplest cosmological fra... |
gr-qc/0002082 | Kornilov D. A. | V.M. Zhuravlev, D.A. Kornilov | Effect of latent mass in inhomogeneous cosmological model with perfect
fluid and self-acting scalar field | 8 pages, 1 figure, LaTeX | Grav.Cosmol. 5 (1999) 325-328 | null | null | gr-qc | null | The inhomogeneous cosmological model with matter in the form self-acting
scalar field and perfect fluid is considered. On the basis of exact solutions
is considered the evolution of density distribution of a matter in space on a
background cosmological expansion by the Universe. Is shown, the first, in such
model the... | [
{
"created": "Wed, 23 Feb 2000 14:09:36 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Zhuravlev",
"V. M.",
""
],
[
"Kornilov",
"D. A.",
""
]
] | The inhomogeneous cosmological model with matter in the form self-acting scalar field and perfect fluid is considered. On the basis of exact solutions is considered the evolution of density distribution of a matter in space on a background cosmological expansion by the Universe. Is shown, the first, in such model the e... |
1502.02431 | Boris Bolliet | B. Bolliet, J. Grain, C. Stahl, L. Linsefors, A. Barrau | Comparison of primordial tensor power spectra from the deformed algebra
and dressed metric approaches in loop quantum cosmology | 15 pages, 7 figures | Phys. Rev. D 91, 084035 (2015) | 10.1103/PhysRevD.91.084035 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Loop quantum cosmology tries to capture the main ideas of loop quantum
gravity and to apply them to the Universe as a whole. Two main approaches
within this framework have been considered to date for the study of
cosmological perturbations: the dressed metric approach and the deformed
algebra approach. They both have... | [
{
"created": "Mon, 9 Feb 2015 10:54:30 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Oct 2015 12:19:52 GMT",
"version": "v2"
}
] | 2015-10-08 | [
[
"Bolliet",
"B.",
""
],
[
"Grain",
"J.",
""
],
[
"Stahl",
"C.",
""
],
[
"Linsefors",
"L.",
""
],
[
"Barrau",
"A.",
""
]
] | Loop quantum cosmology tries to capture the main ideas of loop quantum gravity and to apply them to the Universe as a whole. Two main approaches within this framework have been considered to date for the study of cosmological perturbations: the dressed metric approach and the deformed algebra approach. They both have a... |
gr-qc/0405116 | Nora Breton | Nora Breton | Smarr's formula for black holes with non-linear electrodynamics | 10 pages, 3 figures.Contribution to the Festscrift of Prof. A. Garcia | Gen.Rel.Grav.37:643-650,2005 | 10.1007/s10714-005-0051-x | null | gr-qc | null | It is known that for nonlinear electrodynamics the First Law of Black Hole
Mechanics holds, however the Smarr's formula for the total mass does not. In
this contribution we discuss the point and determine the corresponding
expressions for the Bardeen black hole solution that represents a nonlinear
magnetic monopole. ... | [
{
"created": "Fri, 21 May 2004 17:53:34 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Breton",
"Nora",
""
]
] | It is known that for nonlinear electrodynamics the First Law of Black Hole Mechanics holds, however the Smarr's formula for the total mass does not. In this contribution we discuss the point and determine the corresponding expressions for the Bardeen black hole solution that represents a nonlinear magnetic monopole. Th... |
0910.3122 | Boris E. Meierovich | Boris E. Meierovich | Spontaneous Symmetry Breaking in General Relativity. Vector Order
Parameter | 23 pages, 6 figures | J.Exp.Theor.Phys.109:43-52,2009 | 10.1134/S1063776109070061 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational properties of a hedge-hog type topological defect in two extra
dimensions are considered in General Relativity employing a vector as the order
parameter. All previous considerations were done using the order parameter in
the form of a multiplet in a target space of scalar fields. The difference of
these... | [
{
"created": "Fri, 16 Oct 2009 13:49:45 GMT",
"version": "v1"
}
] | 2010-11-02 | [
[
"Meierovich",
"Boris E.",
""
]
] | Gravitational properties of a hedge-hog type topological defect in two extra dimensions are considered in General Relativity employing a vector as the order parameter. All previous considerations were done using the order parameter in the form of a multiplet in a target space of scalar fields. The difference of these t... |
1711.07091 | Orchidea Maria Lecian | Orchidea Maria Lecian | Geometry of the generical cosmological solution before the singularity
limit | 24 pages, 5 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The generic cosmological solution is analyzed both for the non-asymptotic
limit to the cosmological singularity and in the asymptotic limit analytically.
The Bianchi I solution and the Bianchi IX solution, described as a sequence of
Bianchi I reparameterized solutions, are analyzed with respect to the
asymptotic symm... | [
{
"created": "Sun, 19 Nov 2017 22:15:16 GMT",
"version": "v1"
}
] | 2017-11-21 | [
[
"Lecian",
"Orchidea Maria",
""
]
] | The generic cosmological solution is analyzed both for the non-asymptotic limit to the cosmological singularity and in the asymptotic limit analytically. The Bianchi I solution and the Bianchi IX solution, described as a sequence of Bianchi I reparameterized solutions, are analyzed with respect to the asymptotic symmet... |
1304.5691 | Cosimo Bambi | Cosimo Bambi | Can the supermassive objects at the centers of galaxies be traversable
wormholes? The first test of strong gravity for mm/sub-mm VLBI facilities | 5 pages, 2 figures. v2: some typos corrected | Phys.Rev.D87:107501,2013 | 10.1103/PhysRevD.87.107501 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The near future mm/sub-mm VLBI experiments are ambitious projects aiming at
imaging the "shadow" of the supermassive black hole candidate at the center of
the Milky Way and of the ones in nearby galaxies. An accurate observation of
the shape of the shadow can potentially test the nature of these objects and
verify if... | [
{
"created": "Sun, 21 Apr 2013 05:28:12 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Apr 2013 03:34:21 GMT",
"version": "v2"
}
] | 2013-05-06 | [
[
"Bambi",
"Cosimo",
""
]
] | The near future mm/sub-mm VLBI experiments are ambitious projects aiming at imaging the "shadow" of the supermassive black hole candidate at the center of the Milky Way and of the ones in nearby galaxies. An accurate observation of the shape of the shadow can potentially test the nature of these objects and verify if t... |
gr-qc/9212016 | null | C.O.Lousto and N. S\'anchez | String Instabilities in Black Hole Spacetimes | 26pages, Plain Tex | Phys.Rev. D47 (1993) 4498-4509 | 10.1103/PhysRevD.47.4498 | null | gr-qc hep-th | null | We study the emergence of string instabilities in $D$ - dimensional black
hole spacetimes (Schwarzschild and Reissner - Nordstr\o m), and De Sitter space
(in static coordinates to allow a better comparison with the black hole case).
We solve the first order string fluctuations around the center of mass motion
at spat... | [
{
"created": "Wed, 30 Dec 1992 11:29:38 GMT",
"version": "v1"
},
{
"created": "Sun, 10 Jan 1993 16:42:28 GMT",
"version": "v2"
},
{
"created": "Mon, 25 Jan 1993 18:37:46 GMT",
"version": "v3"
}
] | 2009-10-22 | [
[
"Lousto",
"C. O.",
""
],
[
"Sánchez",
"N.",
""
]
] | We study the emergence of string instabilities in $D$ - dimensional black hole spacetimes (Schwarzschild and Reissner - Nordstr\o m), and De Sitter space (in static coordinates to allow a better comparison with the black hole case). We solve the first order string fluctuations around the center of mass motion at spatia... |
2110.12332 | Petr Tretyakov | Alexey V. Toporensky and Petr V. Tretyakov | Spin connection and cosmological perturbations in scalar-torsion gravity | arXiv admin note: substantial text overlap with arXiv:1911.06064 | Int.J.Geom.Meth.Mod.Phys. 19 (2022) 10, 2250147 | 10.1142/S021988782250147X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we generalize our previous results on spin connection for the
linear scalar cosmological perturbation in $f(T)$ theory to wider class of
theories which includes a scalar field $\Phi$ non-minimally coupled to torsion,
and allows $\Phi$-dependence of the function $f$. The case of $f_{TT}=0$, with
a scalar... | [
{
"created": "Sun, 24 Oct 2021 02:03:04 GMT",
"version": "v1"
}
] | 2022-09-08 | [
[
"Toporensky",
"Alexey V.",
""
],
[
"Tretyakov",
"Petr V.",
""
]
] | In this paper we generalize our previous results on spin connection for the linear scalar cosmological perturbation in $f(T)$ theory to wider class of theories which includes a scalar field $\Phi$ non-minimally coupled to torsion, and allows $\Phi$-dependence of the function $f$. The case of $f_{TT}=0$, with a scalar f... |
0807.4241 | Gerard Clement | K. Ait Moussa, G. Clement, H. Guennoune and C. Leygnac | Three-dimensional Chern-Simons black holes | 21 pages | Phys.Rev.D78:064065,2008 | 10.1103/PhysRevD.78.064065 | LAPTH-1262/08 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct black hole solutions to three-dimensional Einstein-Maxwell
theory with both gravitational and electromagnetic Chern-Simons terms. These
intrinsically rotating solutions are geodesically complete, and causally
regular within a certain parameter range. Their mass, angular momentum and
entropy are found to ... | [
{
"created": "Sat, 26 Jul 2008 14:55:44 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Moussa",
"K. Ait",
""
],
[
"Clement",
"G.",
""
],
[
"Guennoune",
"H.",
""
],
[
"Leygnac",
"C.",
""
]
] | We construct black hole solutions to three-dimensional Einstein-Maxwell theory with both gravitational and electromagnetic Chern-Simons terms. These intrinsically rotating solutions are geodesically complete, and causally regular within a certain parameter range. Their mass, angular momentum and entropy are found to sa... |
1503.05587 | S Habib Mazharimousavi | S. Habib Mazharimousavi and M. Halilsoy | Screening of the Reissner-Nordstr\"om charge by a thin-shell of dust
matter | 5 pages, one figure, final version published in EPJC | Eur. Phys. J. C 75, 334 (2015) | 10.1140/epjc/s10052-015-3557-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A concentric charged thin-shell encircling a Reissner-Nordstr\"{o}m black
hole screens the clectric / magnetic charge completely to match with an
external Schwarzschild black hole. The negative mass thin-shell is shown to be
stable against radial perturbations. It is shown further that by reversing the
roles of insid... | [
{
"created": "Tue, 17 Mar 2015 19:25:37 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Apr 2015 08:26:28 GMT",
"version": "v2"
},
{
"created": "Tue, 7 Jul 2015 11:54:51 GMT",
"version": "v3"
},
{
"created": "Tue, 21 Jul 2015 07:28:07 GMT",
"version": "v4"
}
] | 2015-07-22 | [
[
"Mazharimousavi",
"S. Habib",
""
],
[
"Halilsoy",
"M.",
""
]
] | A concentric charged thin-shell encircling a Reissner-Nordstr\"{o}m black hole screens the clectric / magnetic charge completely to match with an external Schwarzschild black hole. The negative mass thin-shell is shown to be stable against radial perturbations. It is shown further that by reversing the roles of inside ... |
2209.02209 | Rui Xu | Rui Xu, Dicong Liang, and Lijing Shao | Static spherical vacuum solutions in the bumblebee gravity model | 19 pages, 10 figures | Phys. Rev. D 107 (2023) 024011 | 10.1103/PhysRevD.107.024011 | null | gr-qc hep-ph hep-th physics.comp-ph | http://creativecommons.org/licenses/by-nc-sa/4.0/ | The bumblebee gravity model is a vector-tensor theory of gravitation where
the vector field nonminimally couples to the Ricci tensor. By investigating the
vacuum field equations with spherical symmetry, we find two families of
black-hole (BH) solutions in this model: one has a vanishing radial component
of the vector... | [
{
"created": "Tue, 6 Sep 2022 04:16:08 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Dec 2022 14:43:24 GMT",
"version": "v2"
}
] | 2023-01-16 | [
[
"Xu",
"Rui",
""
],
[
"Liang",
"Dicong",
""
],
[
"Shao",
"Lijing",
""
]
] | The bumblebee gravity model is a vector-tensor theory of gravitation where the vector field nonminimally couples to the Ricci tensor. By investigating the vacuum field equations with spherical symmetry, we find two families of black-hole (BH) solutions in this model: one has a vanishing radial component of the vector f... |
1307.3562 | Ian Harry | I. W. Harry and A. H. Nitz and Duncan A. Brown and A. Lundgren and
Evan Ochsner and D. Keppel | Investigating the effect of precession on searches for
neutron-star-black-hole binaries with Advanced LIGO | 20 pages, 15 figures, abstract shortened to 1920 character limit. V2
is final version published in PRD | Phys. Rev. D 89, 024010, 2014 | 10.1103/PhysRevD.89.024010 | LIGO-P1300046, NSF-KITP-13-120 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The first direct detection of neutron-star-black-hole binaries will likely be
made with gravitational-wave observatories. Advanced LIGO and Advanced Virgo
will be able to observe neutron-star-black-hole mergers at a maximum distance
of 900Mpc. To acheive this sensitivity, gravitational-wave searches will rely
on usin... | [
{
"created": "Fri, 12 Jul 2013 20:00:57 GMT",
"version": "v1"
},
{
"created": "Tue, 20 May 2014 14:31:24 GMT",
"version": "v2"
}
] | 2014-05-21 | [
[
"Harry",
"I. W.",
""
],
[
"Nitz",
"A. H.",
""
],
[
"Brown",
"Duncan A.",
""
],
[
"Lundgren",
"A.",
""
],
[
"Ochsner",
"Evan",
""
],
[
"Keppel",
"D.",
""
]
] | The first direct detection of neutron-star-black-hole binaries will likely be made with gravitational-wave observatories. Advanced LIGO and Advanced Virgo will be able to observe neutron-star-black-hole mergers at a maximum distance of 900Mpc. To acheive this sensitivity, gravitational-wave searches will rely on using ... |
gr-qc/0410042 | Jose Geraldo Pereira | R. Aldrovandi, J. G. Pereira, K. H. Vu | Doing without the Equivalence Principle | 7 pages, no figures. Talk presented at the "Tenth Marcel Grossmann
Meeting", July 20 to 26, 2003, Rio de Janeiro, Brazil; to be published in the
Proceedings (World Scientific, Singapore, 2005) | null | 10.1142/9789812704030_0142 | null | gr-qc | null | In Einstein's general relativity, geometry replaces the concept of force in
the description of the gravitation interaction. Such an approach rests on the
universality of free-fall--the weak equivalence principle--and would break down
without it. On the other hand, the teleparallel version of general relativity,
a gau... | [
{
"created": "Fri, 8 Oct 2004 19:30:38 GMT",
"version": "v1"
}
] | 2016-11-09 | [
[
"Aldrovandi",
"R.",
""
],
[
"Pereira",
"J. G.",
""
],
[
"Vu",
"K. H.",
""
]
] | In Einstein's general relativity, geometry replaces the concept of force in the description of the gravitation interaction. Such an approach rests on the universality of free-fall--the weak equivalence principle--and would break down without it. On the other hand, the teleparallel version of general relativity, a gauge... |
1401.7967 | Haris K | K Haris and Archana Pai | Synthetic streams in a Gravitational Wave inspiral search with a
multi-detector network | LIGO laboratory document number: LIGO-P1300229 | Phys. Rev. D 90, 022003 (2014) | 10.1103/PhysRevD.90.022003 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational Wave Inspiral search with a global network of interferometers
when carried in a phase coherent fashion would mimic an effective
multi-detector network with synthetic streams constructed by the linear
combination of the data from different detectors. For the first time, we
demonstrate that the two synthe... | [
{
"created": "Thu, 30 Jan 2014 19:53:49 GMT",
"version": "v1"
}
] | 2017-03-14 | [
[
"Haris",
"K",
""
],
[
"Pai",
"Archana",
""
]
] | Gravitational Wave Inspiral search with a global network of interferometers when carried in a phase coherent fashion would mimic an effective multi-detector network with synthetic streams constructed by the linear combination of the data from different detectors. For the first time, we demonstrate that the two syntheti... |
1212.5166 | Alejandro Perez | Ernesto Frodden, Alejandro Perez, Daniele Pranzetti, Christian Roeken | Modelling black holes with angular momentum in loop quantum gravity | null | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a SU(2) connection formulation of Kerr isolated horizons. As in
the non-rotating case, the model is based on a SU(2) Chern-Simons theory
describing the degrees of freedom on the horizon. The presence of a
non-vanishing angular momentum modifies the admissibility conditions for spin
network states. Physic... | [
{
"created": "Thu, 20 Dec 2012 17:51:30 GMT",
"version": "v1"
}
] | 2012-12-21 | [
[
"Frodden",
"Ernesto",
""
],
[
"Perez",
"Alejandro",
""
],
[
"Pranzetti",
"Daniele",
""
],
[
"Roeken",
"Christian",
""
]
] | We construct a SU(2) connection formulation of Kerr isolated horizons. As in the non-rotating case, the model is based on a SU(2) Chern-Simons theory describing the degrees of freedom on the horizon. The presence of a non-vanishing angular momentum modifies the admissibility conditions for spin network states. Physical... |
gr-qc/0508042 | Linqing Wen | Linqing Wen and Bernard F Schutz (AEI, Germany) | Coherent Network Detection of Gravitational Waves: The Redundancy Veto | Accepted for publication in Classical and Quantum Gravity special
edition for proceedings of GWDAW 9, Annecy, France, December 2004 | Class.Quant.Grav. 22 (2005) S1321-S1336 | 10.1088/0264-9381/22/18/S46 | null | gr-qc | null | A network of gravitational wave detectors is called redundant if, given the
direction to a source, the strain induced by a gravitational wave in one or
more of the detectors can be fully expressed in terms of the strain induced in
others in the network. Because gravitational waves have only two polarizations,
any net... | [
{
"created": "Wed, 10 Aug 2005 17:37:01 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Wen",
"Linqing",
"",
"AEI, Germany"
],
[
"Schutz",
"Bernard F",
"",
"AEI, Germany"
]
] | A network of gravitational wave detectors is called redundant if, given the direction to a source, the strain induced by a gravitational wave in one or more of the detectors can be fully expressed in terms of the strain induced in others in the network. Because gravitational waves have only two polarizations, any netwo... |
2205.11681 | Vasilis Oikonomou | S. Nojiri, S.D. Odintsov, V.K. Oikonomou | Integral $F(R)$ Gravity and Saddle Point Condition as a Remedy for the
$H_0$-tension | NPB Accepted | null | 10.1016/j.nuclphysb.2022.115850 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we shall provide an $F(R)$ gravity theoretical framework for
solving the $H_0$-tension. Specifically, by exploiting the $F(R)$ gravity
correspondence with a scalar-tensor theory, we shall provide a condition in
which when it is satisfied, the $H_0$-tension is alleviated. The condition that
remedies the ... | [
{
"created": "Tue, 24 May 2022 00:19:27 GMT",
"version": "v1"
}
] | 2022-06-22 | [
[
"Nojiri",
"S.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this work, we shall provide an $F(R)$ gravity theoretical framework for solving the $H_0$-tension. Specifically, by exploiting the $F(R)$ gravity correspondence with a scalar-tensor theory, we shall provide a condition in which when it is satisfied, the $H_0$-tension is alleviated. The condition that remedies the $H... |
1506.05228 | Tomohiro Nakama | Tomohiro Nakama and Teruaki Suyama | Primordial black holes as a novel probe of primordial gravitational
waves | 6 pages, part of discussion modified | Phys. Rev. D 92, 121304 (2015) | 10.1103/PhysRevD.92.121304 | RESCEU-20/15 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a novel method to probe primordial gravitational waves by means of
primordial black holes (PBHs). When the amplitude of primordial tensor
perturbations on comoving scales much smaller than those relevant to Cosmic
Microwave Background is very large, it induces scalar perturbations due to
second-order effec... | [
{
"created": "Wed, 17 Jun 2015 07:36:40 GMT",
"version": "v1"
},
{
"created": "Sun, 15 May 2016 01:43:33 GMT",
"version": "v2"
}
] | 2016-05-17 | [
[
"Nakama",
"Tomohiro",
""
],
[
"Suyama",
"Teruaki",
""
]
] | We propose a novel method to probe primordial gravitational waves by means of primordial black holes (PBHs). When the amplitude of primordial tensor perturbations on comoving scales much smaller than those relevant to Cosmic Microwave Background is very large, it induces scalar perturbations due to second-order effects... |
gr-qc/9602008 | Jarmo M. Makela | Jarmo Makela (DAMTP, Cambridge) | Schroedinger Equation of the Schwarzschild Black Hole | 15 pages | null | null | null | gr-qc | null | We describe the gravitational degrees of freedom of the Schwarzschild black
hole by one free variable. We introduce an equation which we suggest to be the
Schroedinger equation of the Schwarzschild black hole corresponding to this
model. We solve the Schroedinger equation explicitly and obtain the mass
spectrum of th... | [
{
"created": "Mon, 5 Feb 1996 16:14:16 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Makela",
"Jarmo",
"",
"DAMTP, Cambridge"
]
] | We describe the gravitational degrees of freedom of the Schwarzschild black hole by one free variable. We introduce an equation which we suggest to be the Schroedinger equation of the Schwarzschild black hole corresponding to this model. We solve the Schroedinger equation explicitly and obtain the mass spectrum of the ... |
0808.1962 | Qasem Exirifard | Qasem Exirifard | Phenomenological covariant approach to gravity | v6: a mistake in deriving the equation of the cosmological constant
corrected, refs added | Gen.Rel.Grav.43:93-106,2011 | 10.1007/s10714-010-1073-6 | IPM/P-2008/055 | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We covariantly modify the Einstein-Hilbert action such that the modified
action perturbatively resolves the flat rotational velocity curve of the spiral
galaxies and gives rise to the Tully-Fisher relation, and dynamically generates
the cosmological constant. This modification requires introducing just a single
new u... | [
{
"created": "Thu, 14 Aug 2008 08:52:09 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Jan 2009 16:42:54 GMT",
"version": "v2"
},
{
"created": "Thu, 5 Mar 2009 09:09:36 GMT",
"version": "v3"
},
{
"created": "Mon, 5 Oct 2009 10:36:56 GMT",
"version": "v4"
},
{
"cre... | 2011-02-01 | [
[
"Exirifard",
"Qasem",
""
]
] | We covariantly modify the Einstein-Hilbert action such that the modified action perturbatively resolves the flat rotational velocity curve of the spiral galaxies and gives rise to the Tully-Fisher relation, and dynamically generates the cosmological constant. This modification requires introducing just a single new uni... |
gr-qc/0112057 | Luc Blanchet | Olivier Poujade and Luc Blanchet | Post-Newtonian approximation for isolated systems calculated by matched
asymptotic expansions | 61 pages, to appear in Phys. Rev. D | Phys.Rev. D65 (2002) 124020 | 10.1103/PhysRevD.65.124020 | null | gr-qc | null | Two long-standing problems with the post-Newtonian approximation for isolated
slowly-moving systems in general relativity are: (i) the appearance at high
post-Newtonian orders of divergent Poisson integrals, casting a doubt on the
soundness of the post-Newtonian series; (ii) the domain of validity of the
approximatio... | [
{
"created": "Fri, 21 Dec 2001 19:34:42 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Mar 2002 17:33:13 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Poujade",
"Olivier",
""
],
[
"Blanchet",
"Luc",
""
]
] | Two long-standing problems with the post-Newtonian approximation for isolated slowly-moving systems in general relativity are: (i) the appearance at high post-Newtonian orders of divergent Poisson integrals, casting a doubt on the soundness of the post-Newtonian series; (ii) the domain of validity of the approximation ... |
gr-qc/0603037 | Robert Bock | Robert D. Bock | Radial quantization in rotating space-times | Published in Foundations of Physics, Volume 37, Number 6, June 2007,
pages 977-988 | Found.Phys.37:977-988,2007 | 10.1007/s10701-007-9137-5 | null | gr-qc | null | We present a solution to the time discontinuity paradox in rotating reference
frames by postulating that time is periodic. A kinematic restriction is
enforced that requires the discontinuity to be an integral number of the
periodicity of time. Quantized radii emerge for which the associated tangential
velocities are ... | [
{
"created": "Fri, 10 Mar 2006 18:30:47 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Mar 2006 14:54:39 GMT",
"version": "v2"
},
{
"created": "Thu, 27 Apr 2006 19:44:11 GMT",
"version": "v3"
},
{
"created": "Mon, 18 Jun 2007 12:34:13 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Bock",
"Robert D.",
""
]
] | We present a solution to the time discontinuity paradox in rotating reference frames by postulating that time is periodic. A kinematic restriction is enforced that requires the discontinuity to be an integral number of the periodicity of time. Quantized radii emerge for which the associated tangential velocities are le... |
2108.04672 | Bikram Ghosh | Bikram Ghosh, Saugata Mitra and Subenoy Chakraborty | Some specific wormhole solutions in $f(R)$-modified gravity theory | null | Mod.Phys.Lett.A 36 (2021) 05, 2150024 | 10.1142/S0217732321500243 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper deals with the static spherically symmetric wormhole solutions in
$f(R)$-modified gravity theory with anisotropic matter field and for some
particular choices for the shape functions. The present work may be considered
as an extension of the general formalism in \cite{r15} for finding wormhole
solutions. Fo... | [
{
"created": "Mon, 9 Aug 2021 07:09:58 GMT",
"version": "v1"
}
] | 2021-08-11 | [
[
"Ghosh",
"Bikram",
""
],
[
"Mitra",
"Saugata",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | The paper deals with the static spherically symmetric wormhole solutions in $f(R)$-modified gravity theory with anisotropic matter field and for some particular choices for the shape functions. The present work may be considered as an extension of the general formalism in \cite{r15} for finding wormhole solutions. For ... |
1301.6795 | Daniel Mart\'in-de Blas | Daniel Mart\'in-de Blas, Mercedes Mart\'in-Benito, Guillermo A. Mena
Marug\'an | Inhomogenous loop quantum cosmology with matter | 4 pages, Contribution to the proceedings of the Loops 11-Madrid
conference | J. Phys.: Conf. Ser. 360 (2012) 012032 | 10.1088/1742-6596/360/1/012032 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The linearly polarized Gowdy $T^3$ model with a massless scalar field with
the same symmetries as the metric is quantized by applying a hybrid approach.
The homogeneous geometry degrees of freedom are loop quantized, fact which
leads to the resolution of the cosmological singularity, while a Fock
quantization is empl... | [
{
"created": "Mon, 28 Jan 2013 22:13:17 GMT",
"version": "v1"
}
] | 2013-01-30 | [
[
"Blas",
"Daniel Martín-de",
""
],
[
"Martín-Benito",
"Mercedes",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
]
] | The linearly polarized Gowdy $T^3$ model with a massless scalar field with the same symmetries as the metric is quantized by applying a hybrid approach. The homogeneous geometry degrees of freedom are loop quantized, fact which leads to the resolution of the cosmological singularity, while a Fock quantization is employ... |
2212.04254 | Yang Huang | Yang Huang, Zhoujian Cao | Finite-distance gravitational deflection of massive particles by a
rotating black hole in loop quantum gravity | null | Eur. Phys. J. C 83, 80 (2023) | 10.1140/epjc/s10052-023-11180-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A rotating black hole in loop quantum gravity was constructed by Brahma,
Chen, and Yeom based on a nonrotating counterpart using the revised
Newman-Janis algorithm recently. For such spacetime, we investigate the weak
gravitational deflection of massive particles to explore observational effects
of the quantum correc... | [
{
"created": "Thu, 8 Dec 2022 13:11:04 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Feb 2023 02:42:55 GMT",
"version": "v2"
},
{
"created": "Tue, 25 Apr 2023 04:53:15 GMT",
"version": "v3"
},
{
"created": "Fri, 26 May 2023 06:51:51 GMT",
"version": "v4"
},
{
"cre... | 2023-08-04 | [
[
"Huang",
"Yang",
""
],
[
"Cao",
"Zhoujian",
""
]
] | A rotating black hole in loop quantum gravity was constructed by Brahma, Chen, and Yeom based on a nonrotating counterpart using the revised Newman-Janis algorithm recently. For such spacetime, we investigate the weak gravitational deflection of massive particles to explore observational effects of the quantum correcti... |
gr-qc/9611019 | David Polarski | Julien Lesgourgues, David Polarski and Alexei A. Starobinsky | Quantum-to-classical Transition of Cosmological Perturbations for
Non-vacuum Initial States | LaTeX (28 pages),+2 eps figures | Nucl.Phys.B497:479-510,1997 | 10.1016/S0550-3213(97)00224-1 | LMPT 10/96 | gr-qc astro-ph hep-th quant-ph | null | Transition from quantum to semiclassical behaviour and loss of quantum
coherence for inhomogeneous perturbations generated from a non-vacuum initial
state in the early Universe is considered in the Heisenberg and the
Schr\"odinger representations, as well as using the Wigner function. We show
explicitly that these th... | [
{
"created": "Thu, 7 Nov 1996 18:13:54 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Lesgourgues",
"Julien",
""
],
[
"Polarski",
"David",
""
],
[
"Starobinsky",
"Alexei A.",
""
]
] | Transition from quantum to semiclassical behaviour and loss of quantum coherence for inhomogeneous perturbations generated from a non-vacuum initial state in the early Universe is considered in the Heisenberg and the Schr\"odinger representations, as well as using the Wigner function. We show explicitly that these thre... |
gr-qc/9508021 | Jacek Gruszczak | Jacek Gruszczak | Differential Structure of Space-Time and Physical Fields | 9 pages, LaTeX, Lecture delivered at " Workshop on Modern Methods in
Classical and Quantum Gravity ", July 26-28th, 1995, Sintra, Portugal | null | null | null | gr-qc | null | A physical interpretation of axioms of the differential structure of
space-time is presented. Consequences of such interpretation for cosmic
string's space-time with a scalar field are studied. It is shown that the
assumption of smoothness of the scalar field leads either to modification of
cosmic string's space-time... | [
{
"created": "Tue, 8 Aug 1995 12:53:45 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gruszczak",
"Jacek",
""
]
] | A physical interpretation of axioms of the differential structure of space-time is presented. Consequences of such interpretation for cosmic string's space-time with a scalar field are studied. It is shown that the assumption of smoothness of the scalar field leads either to modification of cosmic string's space-time g... |
gr-qc/0306067 | Michael Petri | Michael Petri (Bundesamt fuer Strahlenschutz, Salzgitter, Germany) | Holostar thermodynamics | 64 pages, 1 figure; revised v2: references and typos corrected, two
minor errors on pages 34 and 38 of v1 corrected; v3: expanded thermodynamic
model to include anti-fermions, added section on matter-antimatter asymmetry,
replaced some numerical results with explicit formula | null | null | null | gr-qc | null | The holostar is an exact solution of the Einstein field equations with a
singularity free interior matter-density rho = 1 / (8 pi r^2) and a boundary
membrane consisting out of tangential pressure. Although the interior matter
has on overall string equation of state, part of the matter can be interpreted
in terms of ... | [
{
"created": "Mon, 16 Jun 2003 13:59:13 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Jul 2003 14:00:49 GMT",
"version": "v2"
},
{
"created": "Sun, 2 May 2004 18:49:45 GMT",
"version": "v3"
}
] | 2016-08-31 | [
[
"Petri",
"Michael",
"",
"Bundesamt fuer Strahlenschutz, Salzgitter, Germany"
]
] | The holostar is an exact solution of the Einstein field equations with a singularity free interior matter-density rho = 1 / (8 pi r^2) and a boundary membrane consisting out of tangential pressure. Although the interior matter has on overall string equation of state, part of the matter can be interpreted in terms of pa... |
gr-qc/0601056 | Douglas Shaw | Douglas J. Shaw and John D. Barrow | The Local Effects of Cosmological Variations in Physical 'Constants' and
Scalar Fields II. Quasi-Spherical Spacetimes | 13 pages, 1 figure | Phys.Rev.D73:123506,2006 | 10.1103/PhysRevD.73.123506 | null | gr-qc astro-ph hep-th | null | We investigate the conditions under which cosmological variations in physical
`constants' and scalar fields are detectable on the surface of local
gravitationally-bound systems, such as planets, in non-spherically symmetric
background spacetimes. The method of matched asymptotic expansions is used to
deal with the la... | [
{
"created": "Sat, 14 Jan 2006 16:35:44 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Shaw",
"Douglas J.",
""
],
[
"Barrow",
"John D.",
""
]
] | We investigate the conditions under which cosmological variations in physical `constants' and scalar fields are detectable on the surface of local gravitationally-bound systems, such as planets, in non-spherically symmetric background spacetimes. The method of matched asymptotic expansions is used to deal with the larg... |
gr-qc/9810081 | Kengo Maeda | Kengo Maeda, Takashi Torii, Makoto Narita | Do naked singularities generically occur in generalized theories of
gravity? | 4 pages including 2 eps figures, to be published in Physical Review
Letters | Phys.Rev.Lett.81:5270-5273,1998 | 10.1103/PhysRevLett.81.5270 | TIT/HEP-404/COSMO-90 | gr-qc | null | A new mechanism for causing naked singularities is found in an effective
superstring theory. We investigate the gravitational collapse in a spherically
symmetric Einstein-Maxwell-dilaton system in the presence of a pure
cosmological constant "potential", where the system has no static black hole
solution. We show tha... | [
{
"created": "Tue, 27 Oct 1998 12:25:10 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Maeda",
"Kengo",
""
],
[
"Torii",
"Takashi",
""
],
[
"Narita",
"Makoto",
""
]
] | A new mechanism for causing naked singularities is found in an effective superstring theory. We investigate the gravitational collapse in a spherically symmetric Einstein-Maxwell-dilaton system in the presence of a pure cosmological constant "potential", where the system has no static black hole solution. We show that ... |
2012.14147 | Shyam Das | Lipi Baskey, Shyam Das, Farook Rahaman | An analytical anisotropic compact stellar model of embedding class I | Accepted in Mod. Phys. Lett. A | null | 10.1142/S0217732321500280 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | A class of solutions of Einstein field equations satisfying Karmarkar
embedding condition is presented which could describe static, spherical fluid
configurations, and could serve as models for compact stars. The fluid under
consideration has unequal principal stresses i.e. fluid is locally anisotropic.
A certain phy... | [
{
"created": "Mon, 28 Dec 2020 08:42:07 GMT",
"version": "v1"
}
] | 2021-03-24 | [
[
"Baskey",
"Lipi",
""
],
[
"Das",
"Shyam",
""
],
[
"Rahaman",
"Farook",
""
]
] | A class of solutions of Einstein field equations satisfying Karmarkar embedding condition is presented which could describe static, spherical fluid configurations, and could serve as models for compact stars. The fluid under consideration has unequal principal stresses i.e. fluid is locally anisotropic. A certain physi... |
2006.00479 | Phongpichit Channuie | Ayan Banerjee (KwaZulu Natal U.), Takol Tangphati (Chulalongkorn U.),
Phongpichit Channuie (Walailak U.) | Strange Quark Stars in 4D Einstein-Gauss-Bonnet Gravity | v2: 16 pages, major modification, regularized 4DEGB scheme added,
version accepted for publication by ApJ | Astrophysical Journal 909 (2021) 14 | 10.3847/1538-4357/abd094 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of strange matter in compact stars may pose striking sequels of
the various physical phenomena. As an alternative to neutron stars, a new class
of compact stars called strange stars should exist if the strange matter
hypothesis is true. In the present article, we investigate the possible
construction of... | [
{
"created": "Sun, 31 May 2020 10:01:00 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Dec 2020 01:39:52 GMT",
"version": "v2"
}
] | 2021-03-02 | [
[
"Banerjee",
"Ayan",
"",
"KwaZulu Natal U."
],
[
"Tangphati",
"Takol",
"",
"Chulalongkorn U."
],
[
"Channuie",
"Phongpichit",
"",
"Walailak U."
]
] | The existence of strange matter in compact stars may pose striking sequels of the various physical phenomena. As an alternative to neutron stars, a new class of compact stars called strange stars should exist if the strange matter hypothesis is true. In the present article, we investigate the possible construction of t... |
1710.00444 | Yen-Kheng Lim | Yen-Kheng Lim | Kasner-type singularities and solitons with Lifshitz asymptotics | 26 pages, 6 figures. Typos corrected, new paragraph added to Sec. 2 | Phys. Rev. D 96, 124004 (2017) | 10.1103/PhysRevD.96.124004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an exact solution in Einstein-Maxwell-dilaton gravity describing a
spacetime with an anisotropic Kasner-type singularity and Lifshitz asymptotics.
This configuration can also be supported by a phantom scalar while still
satisfying the Null Energy Condition. For certain parameters of this solution,
null geo... | [
{
"created": "Mon, 2 Oct 2017 00:46:34 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Dec 2017 01:15:45 GMT",
"version": "v2"
}
] | 2017-12-13 | [
[
"Lim",
"Yen-Kheng",
""
]
] | We present an exact solution in Einstein-Maxwell-dilaton gravity describing a spacetime with an anisotropic Kasner-type singularity and Lifshitz asymptotics. This configuration can also be supported by a phantom scalar while still satisfying the Null Energy Condition. For certain parameters of this solution, null geode... |
2402.02670 | Paul Ramond | Paul Ramond | On the integrability of extended test body dynamics around black holes | 6 pages | null | null | null | gr-qc nlin.SI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general relativity, the motion of an extended test body is influenced by
its proper rotation, or spin. We present a covariant and physically
self-consistent Hamiltonian framework to study this motion, up to quadratic
order in the body's spin, including a spin-induced quadrupole, and in an
arbitrary background spac... | [
{
"created": "Mon, 5 Feb 2024 02:02:57 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Mar 2024 14:07:56 GMT",
"version": "v2"
}
] | 2024-03-13 | [
[
"Ramond",
"Paul",
""
]
] | In general relativity, the motion of an extended test body is influenced by its proper rotation, or spin. We present a covariant and physically self-consistent Hamiltonian framework to study this motion, up to quadratic order in the body's spin, including a spin-induced quadrupole, and in an arbitrary background spacet... |
2001.04666 | Farhad Darabi | F. Darabi, M. Golmohammadi, A. Rezaei-Aghdam | FRW string cosmological solutions via Hojman symmetry | 14 pages, version published online in IJGMMP | Int. J. Geom. Methods Mod. Phys, 17, 12 (2020) 2050175 | 10.1142/S0219887820501753 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we find exact string cosmological solutions for FRW cosmology,
by using Hojman symmetry approach. The string cosmology under consideration
includes a scalar field $\psi(t)$ with the potential $W(\psi)$, and a totally
antisymmetric field strength $H_{\mu\nu\rho}$ which is specifically defined in
terms o... | [
{
"created": "Tue, 14 Jan 2020 08:44:59 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Oct 2020 13:50:46 GMT",
"version": "v2"
}
] | 2020-10-19 | [
[
"Darabi",
"F.",
""
],
[
"Golmohammadi",
"M.",
""
],
[
"Rezaei-Aghdam",
"A.",
""
]
] | In this paper, we find exact string cosmological solutions for FRW cosmology, by using Hojman symmetry approach. The string cosmology under consideration includes a scalar field $\psi(t)$ with the potential $W(\psi)$, and a totally antisymmetric field strength $H_{\mu\nu\rho}$ which is specifically defined in terms of ... |
2111.00750 | Jan Schee | Jan Schee and Zden\v{e}k Stuch\'ik | Appearance of Keplerian discs orbiting on both sides of a
reflection-symmetric wormhole | null | null | 10.1088/1475-7516/2022/01/054 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We construct optical appearance and profiled spectral lines of Keplerian
discs with inner edge at the innermost circular geodesic located on both sides
of the reflection-symmetric Simpson-Visser wormhole, in dependence on its
parameter and inclination angle of a distant observer. We demonstrate
significant difference... | [
{
"created": "Mon, 1 Nov 2021 08:05:27 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Nov 2021 09:07:43 GMT",
"version": "v2"
}
] | 2022-02-02 | [
[
"Schee",
"Jan",
""
],
[
"Stuchík",
"Zdeněk",
""
]
] | We construct optical appearance and profiled spectral lines of Keplerian discs with inner edge at the innermost circular geodesic located on both sides of the reflection-symmetric Simpson-Visser wormhole, in dependence on its parameter and inclination angle of a distant observer. We demonstrate significant differences ... |
1509.06528 | Josef Kluson | Masud Chaichian, Josef Kluson and Markku Oksanen | Non-Projectable Horava-Lifshitz Gravity without Unwanted Scalar Graviton | 20 pages, v2:references added, minor corrections, journal version | null | 10.1103/PhysRevD.92.104043 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a way of eliminating the unwanted scalar graviton from
Horava-Lifshitz gravity. That is achieved via introduction of certain
additional constraints. We perform canonical analysis of both projectable and
non-projectable versions of the theory. We obtain the structure of constraints
in each case, and analyz... | [
{
"created": "Tue, 22 Sep 2015 09:46:32 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Nov 2015 07:46:02 GMT",
"version": "v2"
}
] | 2015-12-09 | [
[
"Chaichian",
"Masud",
""
],
[
"Kluson",
"Josef",
""
],
[
"Oksanen",
"Markku",
""
]
] | We consider a way of eliminating the unwanted scalar graviton from Horava-Lifshitz gravity. That is achieved via introduction of certain additional constraints. We perform canonical analysis of both projectable and non-projectable versions of the theory. We obtain the structure of constraints in each case, and analyze ... |
1603.03883 | Haidar Sheikhahmadi | Haidar Sheikhahmadi, Emmanuel N. Saridakis, Ali Aghamohammadi and
Khaled Saaidi | Hamilton-Jacobi formalism for inflation with non-minimal derivative
coupling | 19 pages, 6 figures, version published in JCAP | JCAP 1610 (2016) no.10, 021 | 10.1088/1475-7516/2016/10/021 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In inflation with nonminimal derivative coupling there is not a conformal
transformation to the Einstein frame where calculations are straightforward,
and thus in order to extract inflationary observables one needs to perform a
detailed and lengthy perturbation investigation. In this work we bypass this
problem by pe... | [
{
"created": "Sat, 12 Mar 2016 09:43:59 GMT",
"version": "v1"
},
{
"created": "Mon, 2 May 2016 19:23:13 GMT",
"version": "v2"
},
{
"created": "Mon, 19 Sep 2016 07:15:41 GMT",
"version": "v3"
},
{
"created": "Wed, 12 Oct 2016 21:12:43 GMT",
"version": "v4"
}
] | 2016-10-14 | [
[
"Sheikhahmadi",
"Haidar",
""
],
[
"Saridakis",
"Emmanuel N.",
""
],
[
"Aghamohammadi",
"Ali",
""
],
[
"Saaidi",
"Khaled",
""
]
] | In inflation with nonminimal derivative coupling there is not a conformal transformation to the Einstein frame where calculations are straightforward, and thus in order to extract inflationary observables one needs to perform a detailed and lengthy perturbation investigation. In this work we bypass this problem by perf... |
1601.02988 | Donato Bini | Donato Bini, Thibault Damour, Andrea Geralico | New gravitational self-force analytical results for eccentric orbits
around a Schwarzschild black hole | 21 pages; 2 figures (4 eps files); revtex macros used. Revised
version including more details in Appendix B. References updated and minor
typos corrected | Phys. Rev. D 93, 104017 (2016) | 10.1103/PhysRevD.93.104017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We raise the analytical knowledge of the eccentricity-expansion of the
Detweiler-Barack-Sago redshift invariant in a Schwarzschild spacetime up to the
9.5th post-Newtonian order (included) for the $e^2$ and $e^4$ contributions,
and up to the 4th post-Newtonian order for the higher eccentricity
contributions through $... | [
{
"created": "Tue, 12 Jan 2016 18:24:33 GMT",
"version": "v1"
},
{
"created": "Tue, 3 May 2016 08:43:10 GMT",
"version": "v2"
}
] | 2016-05-18 | [
[
"Bini",
"Donato",
""
],
[
"Damour",
"Thibault",
""
],
[
"Geralico",
"Andrea",
""
]
] | We raise the analytical knowledge of the eccentricity-expansion of the Detweiler-Barack-Sago redshift invariant in a Schwarzschild spacetime up to the 9.5th post-Newtonian order (included) for the $e^2$ and $e^4$ contributions, and up to the 4th post-Newtonian order for the higher eccentricity contributions through $e^... |
2104.02264 | Huaifan Li | Xin-Ping Li, Yu-Bo Ma, Yang Zhang, Li-Chun Zhang, Huai-Fan Li | Thermodynamics of phase transition in Reissner-Nordstrom-de Sitter
spacetime | 16 pages,7 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The Reissner-Nordstrom-de Sitter (RN-dS) spacetime can be considered as a
thermodynamic system. Its thermodynamic properties are discussed that the RN-dS
spacetime has phase transitions and critical phenomena similar to that of the
Van de Waals system or the charged AdS black hole. The continuous phase
transition poi... | [
{
"created": "Tue, 6 Apr 2021 03:09:52 GMT",
"version": "v1"
}
] | 2021-04-07 | [
[
"Li",
"Xin-Ping",
""
],
[
"Ma",
"Yu-Bo",
""
],
[
"Zhang",
"Yang",
""
],
[
"Zhang",
"Li-Chun",
""
],
[
"Li",
"Huai-Fan",
""
]
] | The Reissner-Nordstrom-de Sitter (RN-dS) spacetime can be considered as a thermodynamic system. Its thermodynamic properties are discussed that the RN-dS spacetime has phase transitions and critical phenomena similar to that of the Van de Waals system or the charged AdS black hole. The continuous phase transition point... |
gr-qc/9704004 | Gentil O. Pires | Carlos Pinheiro, Gentil O. Pires and N. Tomimura | Some Quantum Aspects of Three-Dimensional Einstein-Chern-Simons-Proca
Massive Gravity | 7 pages, Latex, no figures | NuovoCim.B111:1023-1028,1996 | 10.1007/BF02743298 | null | gr-qc hep-th | null | We present a 3-dimensional model for massive gravity with masses induced by
topological (Chern-Simons) and Proca-like mass terms. Causality and unitarity
are discussed at tree-level. Power-counting renormalizability is also
contemplated.
| [
{
"created": "Tue, 1 Apr 1997 18:16:52 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Pinheiro",
"Carlos",
""
],
[
"Pires",
"Gentil O.",
""
],
[
"Tomimura",
"N.",
""
]
] | We present a 3-dimensional model for massive gravity with masses induced by topological (Chern-Simons) and Proca-like mass terms. Causality and unitarity are discussed at tree-level. Power-counting renormalizability is also contemplated. |
2309.06293 | Yerko V\'asquez | Franco Fiorini, P. A. Gonz\'alez and Yerko V\'asquez | Reference Frames and Black Hole Thermodynamics | Accepted for publication in JCAP | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of the absolute parallelism formulation of General Relativity,
and because of the fact that the scalar curvature can be written in purely
torsional terms, it was known for a long time that a surface term based solely
on the torsion tensor appears in the action. It was subsequently suggested that
this t... | [
{
"created": "Tue, 12 Sep 2023 14:57:01 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Dec 2023 15:38:16 GMT",
"version": "v2"
}
] | 2023-12-06 | [
[
"Fiorini",
"Franco",
""
],
[
"González",
"P. A.",
""
],
[
"Vásquez",
"Yerko",
""
]
] | In the context of the absolute parallelism formulation of General Relativity, and because of the fact that the scalar curvature can be written in purely torsional terms, it was known for a long time that a surface term based solely on the torsion tensor appears in the action. It was subsequently suggested that this ter... |
gr-qc/0101010 | Brandon Carter | Brandon Carter and Jean-Philippe Uzan | Reflection symmetry breaking scenarios with minimal gauge form coupling
in brane world cosmology | 13 pages latex (revised to rectify a couple of sign transcription
errors) | Nucl.Phys. B606 (2001) 45-58 | 10.1016/S0550-3213(01)00174-2 | null | gr-qc hep-ph | null | This article synthesises and extends recent work on the cosmological
consequences of dropping the usual Z_2 reflection symmetry postulate in brane
world scenarios. It is observed that for a cosmological model of homogeneous
isotropic type, the relevant generalised Birkhoff theorem establishing
staticity of the extern... | [
{
"created": "Mon, 1 Jan 2001 07:40:03 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Jan 2001 14:39:43 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Carter",
"Brandon",
""
],
[
"Uzan",
"Jean-Philippe",
""
]
] | This article synthesises and extends recent work on the cosmological consequences of dropping the usual Z_2 reflection symmetry postulate in brane world scenarios. It is observed that for a cosmological model of homogeneous isotropic type, the relevant generalised Birkhoff theorem establishing staticity of the external... |
1812.01694 | Alberto Saa | Saikat Chakraborty, Sanchari Pal, and Alberto Saa | Dynamical equivalence of $f(R)$ gravity in Jordan and Einstein frames | 9 pages. Final version accepted for publication in the PRD | Phys. Rev. D 99, 024020 (2019) | 10.1103/PhysRevD.99.024020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the dynamics of $f(R)$ gravity in Jordan and Einstein frames.
First, we perform a phase-space singularities analysis in both frames. We show
that, typically, anisotropic singularities are absent in the Einstein frame,
whereas they may appear in the Jordan frame. We conciliate this apparent
inconsistenc... | [
{
"created": "Tue, 4 Dec 2018 21:24:29 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jan 2019 21:58:31 GMT",
"version": "v2"
}
] | 2019-01-16 | [
[
"Chakraborty",
"Saikat",
""
],
[
"Pal",
"Sanchari",
""
],
[
"Saa",
"Alberto",
""
]
] | We investigate the dynamics of $f(R)$ gravity in Jordan and Einstein frames. First, we perform a phase-space singularities analysis in both frames. We show that, typically, anisotropic singularities are absent in the Einstein frame, whereas they may appear in the Jordan frame. We conciliate this apparent inconsistency ... |
1906.07088 | Natali de Santi | N. S. M. de Santi and R. Santarelli | Mass evolution of Schwarzschild black holes | 13 pages, 12 figures and 4 tables | null | 10.1007/s13538-019-00708-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the classical theory of general relativity black holes can only absorb and
not emit particles. When quantum mechanical effects are taken into account,
then the black holes emit particles as hot bodies with temperature proportional
to $\kappa$, its surface gravity. This thermal emission can lead to a slow
decrease ... | [
{
"created": "Mon, 17 Jun 2019 15:38:21 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jul 2019 16:53:45 GMT",
"version": "v2"
}
] | 2019-11-04 | [
[
"de Santi",
"N. S. M.",
""
],
[
"Santarelli",
"R.",
""
]
] | In the classical theory of general relativity black holes can only absorb and not emit particles. When quantum mechanical effects are taken into account, then the black holes emit particles as hot bodies with temperature proportional to $\kappa$, its surface gravity. This thermal emission can lead to a slow decrease in... |
gr-qc/0606125 | Michal Demetrian | Michal Demetrian | Coleman - de Luccia instanton of the second order in a brane world | 4 pages, accepted in IJTP | Int.J.Theor.Phys. 45 (2006) 2297-2304 | 10.1007/s10773-006-9196-y | null | gr-qc | null | The second order Coleman - de Luccia instanton and its action in the Randall
- Sundrum type II model are investigated and the comparison with the results in
Einstein's general relativity is done in the present paper.
| [
{
"created": "Thu, 29 Jun 2006 10:25:10 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Demetrian",
"Michal",
""
]
] | The second order Coleman - de Luccia instanton and its action in the Randall - Sundrum type II model are investigated and the comparison with the results in Einstein's general relativity is done in the present paper. |
gr-qc/9702040 | Miguel Navarro | Miguel Navarro (IMAFF (Madrid) and Instituto Carlos I (Granada)) | Generalized symmetries and invariant matter couplings in two-dimensional
dilaton gravity | LateX file, no macros, 14pp: minor changes have been made and some
misprints have been corrected | Phys.Rev.D56:2384-2389,1997 | 10.1103/PhysRevD.56.2384 | null | gr-qc | null | New features of the generalized symmetries of generic two-dimensional dilaton
models of gravity are presented and invariant gravity-matter couplings are
introduced. We show that there is a continuum set of Noether symmetries, which
contains half a de Witt algebra. Two of these symmetries are area-preserving
transform... | [
{
"created": "Thu, 20 Feb 1997 20:00:43 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Apr 1997 13:54:34 GMT",
"version": "v2"
}
] | 2011-09-09 | [
[
"Navarro",
"Miguel",
"",
"IMAFF"
]
] | New features of the generalized symmetries of generic two-dimensional dilaton models of gravity are presented and invariant gravity-matter couplings are introduced. We show that there is a continuum set of Noether symmetries, which contains half a de Witt algebra. Two of these symmetries are area-preserving transformat... |
1806.06635 | Andrea Geralico | Donato Bini and Andrea Geralico | Gravitational self-force corrections to tidal invariants for particles
on eccentric orbits in a Schwarzschild spacetime | 17 pages, revtex macros | Phys. Rev. D 98, 064026 (2018) | 10.1103/PhysRevD.98.064026 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study tidal effects induced by a particle moving along a slightly
eccentric equatorial orbits in a Schwarzschild spacetime within the
gravitational self-force framework. We compute the first order (conservative)
corrections in the mass-ratio to the eigenvalues of the electric-type and
magnetic-type tidal tensors u... | [
{
"created": "Mon, 18 Jun 2018 12:52:50 GMT",
"version": "v1"
}
] | 2018-09-19 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
]
] | We study tidal effects induced by a particle moving along a slightly eccentric equatorial orbits in a Schwarzschild spacetime within the gravitational self-force framework. We compute the first order (conservative) corrections in the mass-ratio to the eigenvalues of the electric-type and magnetic-type tidal tensors up ... |
2012.07614 | Phillipo Lappicy | Juliette Hell, Phillipo Lappicy and Claes Uggla | Bifurcations and Chaos in Ho\v{r}ava-Lifshitz Cosmology | 93 Pages, 21 Figures | null | null | null | gr-qc math.DS | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nature of generic spacelike singularities in general relativity is
connected with first principles, notably Lorentzian causal structure, scale
invariance and general covariance. To bring a new perspective on how these
principles affect generic spacelike singularities, we consider the initial
singularity in spatia... | [
{
"created": "Mon, 14 Dec 2020 15:05:02 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Mar 2021 13:59:24 GMT",
"version": "v2"
},
{
"created": "Sun, 20 Aug 2023 22:14:21 GMT",
"version": "v3"
}
] | 2023-08-22 | [
[
"Hell",
"Juliette",
""
],
[
"Lappicy",
"Phillipo",
""
],
[
"Uggla",
"Claes",
""
]
] | The nature of generic spacelike singularities in general relativity is connected with first principles, notably Lorentzian causal structure, scale invariance and general covariance. To bring a new perspective on how these principles affect generic spacelike singularities, we consider the initial singularity in spatiall... |
1503.05097 | Lior M. Burko | Lior M. Burko and Gaurav Khanna | Self-force gravitational waveforms for extreme and intermediate mass
ratio inspirals. III: Spin-orbit coupling revisited | 5 pages, 9 figures. In Version 2 references were added, and some
sentences were re-worded. No substantial changes though | Phys. Rev. D 91, 104017 (2015) | 10.1103/PhysRevD.91.104017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The first- and second-order dissipative self force and the first order
conservative self force are applied together with spin-orbit coupling to the
quasi-circular motion of a test mass in the spacetime of a Schwarzschild black
hole, for extreme or intermediate mass ratios. The partial dephasing of the
gravitational w... | [
{
"created": "Tue, 17 Mar 2015 15:44:31 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Apr 2015 21:43:58 GMT",
"version": "v2"
}
] | 2015-06-11 | [
[
"Burko",
"Lior M.",
""
],
[
"Khanna",
"Gaurav",
""
]
] | The first- and second-order dissipative self force and the first order conservative self force are applied together with spin-orbit coupling to the quasi-circular motion of a test mass in the spacetime of a Schwarzschild black hole, for extreme or intermediate mass ratios. The partial dephasing of the gravitational wav... |
gr-qc/0005038 | Dirk Puetzfeld | Alberto Garcia, Alfredo Macias, Dirk Puetzfeld, Jose Socorro | Plane-fronted waves in metric-affine gravity | 14 pages, submitted to Phys. Rev. D | Phys.Rev. D62 (2000) 044021 | 10.1103/PhysRevD.62.044021 | null | gr-qc | null | We study plane-fronted electrovacuum waves in metric-affine gravity theories
(MAG) with cosmological constant. Their field strengths are, on the
gravitational side, curvature $R_{\alpha}{}^{\beta}$, nonmetricity
$Q_{\alpha\beta}$, torsion $T^{\alpha}$ and, on the matter side, the
electromagnetic field strength $F$. O... | [
{
"created": "Thu, 11 May 2000 10:00:11 GMT",
"version": "v1"
}
] | 2009-04-03 | [
[
"Garcia",
"Alberto",
""
],
[
"Macias",
"Alfredo",
""
],
[
"Puetzfeld",
"Dirk",
""
],
[
"Socorro",
"Jose",
""
]
] | We study plane-fronted electrovacuum waves in metric-affine gravity theories (MAG) with cosmological constant. Their field strengths are, on the gravitational side, curvature $R_{\alpha}{}^{\beta}$, nonmetricity $Q_{\alpha\beta}$, torsion $T^{\alpha}$ and, on the matter side, the electromagnetic field strength $F$. Our... |
1710.09152 | Shunichiro Kinoshita | Shunichiro Kinoshita and Takahisa Igata | The essence of the Blandford-Znajek process | 15 pages, 3 figures; v2: references added; v3: published version in
PTEP | null | 10.1093/ptep/pty024 | RUP-17-21 | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | From a spacetime perspective, the dynamics of magnetic field lines of
force-free electromagnetic fields can be rewritten into a quite similar form
for the dynamics of strings, i.e., dynamics of "field sheets". Using this
formalism, we explicitly show that the field sheets of stationary and
axisymmetric force-free ele... | [
{
"created": "Wed, 25 Oct 2017 10:20:38 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Nov 2017 09:19:42 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Mar 2018 05:09:06 GMT",
"version": "v3"
}
] | 2018-03-30 | [
[
"Kinoshita",
"Shunichiro",
""
],
[
"Igata",
"Takahisa",
""
]
] | From a spacetime perspective, the dynamics of magnetic field lines of force-free electromagnetic fields can be rewritten into a quite similar form for the dynamics of strings, i.e., dynamics of "field sheets". Using this formalism, we explicitly show that the field sheets of stationary and axisymmetric force-free elect... |
1109.1182 | Jan Steinhoff | Han Wang, Jan Steinhoff, Jing Zeng, Gerhard Sch\"afer | Leading-order spin-orbit and spin(1)-spin(2) radiation-reaction
Hamiltonians | 17 pages, v2: published version | Phys.Rev.D84:124005,2011 | 10.1103/PhysRevD.84.124005 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper, the leading-order post-Newtonian spin-orbit and
spin(1)-spin(2) radiation-reaction Hamiltonians are calculated. We utilize the
canonical formalism of Arnowitt, Deser, and Misner (ADM), which has shown to be
valuable for this kind of calculation. The results are valid for arbitrary many
objects. ... | [
{
"created": "Tue, 6 Sep 2011 13:42:44 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Jan 2012 17:08:11 GMT",
"version": "v2"
}
] | 2012-01-31 | [
[
"Wang",
"Han",
""
],
[
"Steinhoff",
"Jan",
""
],
[
"Zeng",
"Jing",
""
],
[
"Schäfer",
"Gerhard",
""
]
] | In the present paper, the leading-order post-Newtonian spin-orbit and spin(1)-spin(2) radiation-reaction Hamiltonians are calculated. We utilize the canonical formalism of Arnowitt, Deser, and Misner (ADM), which has shown to be valuable for this kind of calculation. The results are valid for arbitrary many objects. Th... |
gr-qc/9603020 | Shuhei Mano | Shuhei Mano, Hisao Suzuki and Eiichi Takasugi | Analytic Solutions of the Teukolsky Equation and their Low Frequency
Expansions | 24 pages, minor modifications | Prog.Theor.Phys. 95 (1996) 1079-1096 | 10.1143/PTP.95.1079 | null | gr-qc | null | Analytic solutions of the Teukolsky equation in Kerr geometries are presented
in the form of series of hypergeometric functions and Coulomb wave functions.
Relations between these solutions are established. The solutions provide a very
powerful method not only for examining the general properties of solutions and
phy... | [
{
"created": "Wed, 13 Mar 1996 11:36:48 GMT",
"version": "v1"
},
{
"created": "Sat, 16 Mar 1996 03:52:27 GMT",
"version": "v2"
},
{
"created": "Tue, 19 Mar 1996 11:02:41 GMT",
"version": "v3"
}
] | 2009-10-28 | [
[
"Mano",
"Shuhei",
""
],
[
"Suzuki",
"Hisao",
""
],
[
"Takasugi",
"Eiichi",
""
]
] | Analytic solutions of the Teukolsky equation in Kerr geometries are presented in the form of series of hypergeometric functions and Coulomb wave functions. Relations between these solutions are established. The solutions provide a very powerful method not only for examining the general properties of solutions and physi... |
2405.14071 | Shinji Tsujikawa | Shinji Mukohyama, Shinji Tsujikawa, Anzhong Wang | Revisiting linear stability of black hole odd-parity perturbations in
Einstein-Aether gravity | 14 pages, no figures | Phys. Rev. D 110, 044024 (2024) | 10.1103/PhysRevD.110.044024 | YITP-24-65, IPMU24-0024, WUCG-24-05 | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | In Einstein-Aether gravity, we revisit the issue of linear stabilities of
black holes against odd-parity perturbations on a static and spherically
symmetric background. In this theory, superluminal propagation is allowed and
there is a preferred timelike direction along the unit Aether vector field. If
we choose the ... | [
{
"created": "Thu, 23 May 2024 00:16:09 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Aug 2024 05:31:25 GMT",
"version": "v2"
}
] | 2024-08-13 | [
[
"Mukohyama",
"Shinji",
""
],
[
"Tsujikawa",
"Shinji",
""
],
[
"Wang",
"Anzhong",
""
]
] | In Einstein-Aether gravity, we revisit the issue of linear stabilities of black holes against odd-parity perturbations on a static and spherically symmetric background. In this theory, superluminal propagation is allowed and there is a preferred timelike direction along the unit Aether vector field. If we choose the us... |
gr-qc/9709019 | Mathias Trucks | Mathias Trucks | A KMS-like state of Hadamard type on Robertson-Walker spacetimes and its
time evolution | 21 pages, Latex2e | Commun.Math.Phys. 197 (1998) 387-404 | 10.1007/s002200050456 | null | gr-qc hep-th | null | In this work we define a new state on the Weyl algebra of the free massive
scalar Klein-Gordon field on a Robertson-Walker spacetime and prove that it is
a Hadamard state. The state is supposed to approximate a thermal equilibrium
state on a Robertson-Walker spacetime and we call it an adiabatic KMS state.
This opens... | [
{
"created": "Tue, 9 Sep 1997 21:17:47 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Trucks",
"Mathias",
""
]
] | In this work we define a new state on the Weyl algebra of the free massive scalar Klein-Gordon field on a Robertson-Walker spacetime and prove that it is a Hadamard state. The state is supposed to approximate a thermal equilibrium state on a Robertson-Walker spacetime and we call it an adiabatic KMS state. This opens t... |
gr-qc/9410037 | null | Lajos Diosi | Continuously Diagonalized Density Operatorof Open Systems | 5pp PlainTeX | null | null | null | gr-qc | null | We showed several years ago that the density operator of Markovian open
systems can be diagonalized continuously in time. The resulting pure state jump
processes correspond to quantum trajectories proposed in recent quantum optics
calculations or, at fundamental level, to exact consistent histories.
| [
{
"created": "Wed, 26 Oct 1994 16:25:00 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Diosi",
"Lajos",
""
]
] | We showed several years ago that the density operator of Markovian open systems can be diagonalized continuously in time. The resulting pure state jump processes correspond to quantum trajectories proposed in recent quantum optics calculations or, at fundamental level, to exact consistent histories. |
1403.2984 | J. G. Cardoso | J. G. Cardoso | A Local Description of Dark Energy in Terms of Classical Two-Component
Massive Spin-One Uncharged Fields on Spacetimes with Torsionful Affinities | About 10 pages, 47 references | null | 10.1515/phys-2015-0044 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is assumed that the two-component spinor formalisms for curved spacetimes
that are endowed with torsionful affine connexions can supply a local
description of dark energy in terms of classical massive spin-one uncharged
fields. The relevant wave functions are related to torsional affine potentials
which bear invar... | [
{
"created": "Tue, 11 Mar 2014 16:15:13 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Jul 2014 12:34:45 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Jul 2014 11:14:16 GMT",
"version": "v3"
},
{
"created": "Sun, 16 Nov 2014 10:57:10 GMT",
"version": "v4"
},
{
"c... | 2016-03-07 | [
[
"Cardoso",
"J. G.",
""
]
] | It is assumed that the two-component spinor formalisms for curved spacetimes that are endowed with torsionful affine connexions can supply a local description of dark energy in terms of classical massive spin-one uncharged fields. The relevant wave functions are related to torsional affine potentials which bear invaria... |
gr-qc/9811073 | Ilja Schmelzer | Ilja Schmelzer | General Ether Theory and Graviton Mass | 8 pages Latex, no figures | null | null | WIAS preprint No. 447 (ISSN 0946-8633) | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce additional restriction into "general ether theory" - a
generalization of Lorentz ether theory to gravity - which fixes the signs of
the cosmological constants in this theory. This leads to an oscillating
universe, thus, solves the cosmological horizon problem without inflation.
We prove the equivalence... | [
{
"created": "Fri, 20 Nov 1998 20:54:17 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Dec 2009 06:29:25 GMT",
"version": "v2"
}
] | 2009-12-08 | [
[
"Schmelzer",
"Ilja",
""
]
] | We introduce additional restriction into "general ether theory" - a generalization of Lorentz ether theory to gravity - which fixes the signs of the cosmological constants in this theory. This leads to an oscillating universe, thus, solves the cosmological horizon problem without inflation. We prove the equivalence of ... |
2007.02887 | Soumendra Kishore Roy | Soumendra Kishore Roy, Ratna Koley, and Parthasarathi Majumdar | Probing the post-Minkowskian approximation using recursive addition of
self-interactions | null | Phys. Rev. D 102, 084045 (2020) | 10.1103/PhysRevD.102.084045 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We address the problem of deriving the post-Minkowskian approximation, widely
used in current gravitational wave literature by investigating a possible
deduction out of the recursive N\"other coupling approach, from the Pauli-Fierz
spin-2 theory in flat spacetime. We find that this approach yields the
post-Minkowskia... | [
{
"created": "Mon, 6 Jul 2020 16:59:15 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Oct 2020 18:12:24 GMT",
"version": "v2"
}
] | 2020-10-21 | [
[
"Roy",
"Soumendra Kishore",
""
],
[
"Koley",
"Ratna",
""
],
[
"Majumdar",
"Parthasarathi",
""
]
] | We address the problem of deriving the post-Minkowskian approximation, widely used in current gravitational wave literature by investigating a possible deduction out of the recursive N\"other coupling approach, from the Pauli-Fierz spin-2 theory in flat spacetime. We find that this approach yields the post-Minkowskian ... |
1707.01118 | Sebastian Szybka | Piotr T. Chru\'sciel, Sebastian J. Szybka, Paul Tod | Towards a classification of vacuum near-horizons geometries | 16 pages, 3 figures; minor changes to match published version | Class. Quantum Grav. 35 (2018) 015002 | 10.1088/1361-6382/aa90e7 | UWThPh-2017-16 | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove uniqueness of the near-horizon geometries arising from degenerate
Kerr black holes within the collection of nearby vacuum near-horizon
geometries.
| [
{
"created": "Tue, 4 Jul 2017 18:06:51 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Dec 2017 20:32:12 GMT",
"version": "v2"
}
] | 2017-12-11 | [
[
"Chruściel",
"Piotr T.",
""
],
[
"Szybka",
"Sebastian J.",
""
],
[
"Tod",
"Paul",
""
]
] | We prove uniqueness of the near-horizon geometries arising from degenerate Kerr black holes within the collection of nearby vacuum near-horizon geometries. |
1012.4869 | Robert Owen | Robert Owen, Jeandrew Brink, Yanbei Chen, Jeffrey D. Kaplan, Geoffrey
Lovelace, Keith D. Matthews, David A. Nichols, Mark A. Scheel, Fan Zhang,
Aaron Zimmerman, Kip S. Thorne | Frame-Dragging Vortexes and Tidal Tendexes Attached to Colliding Black
Holes: Visualizing the Curvature of Spacetime | 4 pages, 5 figures | Phys.Rev.Lett.106:151101,2011 | 10.1103/PhysRevLett.106.151101 | null | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | When one splits spacetime into space plus time, the spacetime curvature (Weyl
tensor) gets split into an "electric" part E_{jk} that describes tidal gravity
and a "magnetic" part B_{jk} that describes differential dragging of inertial
frames. We introduce tools for visualizing B_{jk} (frame-drag vortex lines,
their v... | [
{
"created": "Wed, 22 Dec 2010 03:01:52 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Apr 2011 21:31:39 GMT",
"version": "v2"
}
] | 2015-03-17 | [
[
"Owen",
"Robert",
""
],
[
"Brink",
"Jeandrew",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Kaplan",
"Jeffrey D.",
""
],
[
"Lovelace",
"Geoffrey",
""
],
[
"Matthews",
"Keith D.",
""
],
[
"Nichols",
"David A.",
""
]... | When one splits spacetime into space plus time, the spacetime curvature (Weyl tensor) gets split into an "electric" part E_{jk} that describes tidal gravity and a "magnetic" part B_{jk} that describes differential dragging of inertial frames. We introduce tools for visualizing B_{jk} (frame-drag vortex lines, their vor... |
2006.00319 | Federico Re | Federico Re | Fake dark matter from retarded distortions | 35 pages, 8 figures | null | 10.1140/epjc/s10052-021-09156-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We push ahead the idea developed in [24], that some fraction of the dark
matter and the dark energy can be explained as a relativistic effect. The
inhomogeneity matter generates gravitational distortions, which are general
relativistically retarded. These combine in a magnification effect since the
past matter densit... | [
{
"created": "Sat, 30 May 2020 17:07:50 GMT",
"version": "v1"
}
] | 2021-05-12 | [
[
"Re",
"Federico",
""
]
] | We push ahead the idea developed in [24], that some fraction of the dark matter and the dark energy can be explained as a relativistic effect. The inhomogeneity matter generates gravitational distortions, which are general relativistically retarded. These combine in a magnification effect since the past matter density,... |
1709.09804 | Guillem Dom\`enech | Guillem Dom\`enech and Misao Sasaki | Hamiltonian approach to 2nd order gauge invariant cosmological
perturbations | Revised version. v3: minor typos corrected | Phys. Rev. D 97, 023521 (2018) | 10.1103/PhysRevD.97.023521 | YITP-17-104 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In view of growing interest in tensor modes and their possible detection, we
clarify the definition of tensor modes up to 2nd order in perturbation theory
within the Hamiltonian formalism. Like in gauge theory, in cosmology the
Hamiltonian is a suitable and consistent approach to reduce the gauge degrees
of freedom. ... | [
{
"created": "Thu, 28 Sep 2017 05:14:59 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Jan 2018 17:17:13 GMT",
"version": "v2"
},
{
"created": "Mon, 18 Sep 2023 08:21:14 GMT",
"version": "v3"
}
] | 2023-09-19 | [
[
"Domènech",
"Guillem",
""
],
[
"Sasaki",
"Misao",
""
]
] | In view of growing interest in tensor modes and their possible detection, we clarify the definition of tensor modes up to 2nd order in perturbation theory within the Hamiltonian formalism. Like in gauge theory, in cosmology the Hamiltonian is a suitable and consistent approach to reduce the gauge degrees of freedom. In... |
2204.12930 | Tomislav Prokopec | Rens van Haasteren, Tomislav Prokopec | Scalar propagator for planar gravitational waves | 46 pages, 8 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We construct the massive scalar propagator for planar gravitational wave
backgrounds propagating on Minkowski space. We represent the propagator in
terms of the Bessel's function of suitably deformed nonlocal distance
functions, the deformation being caused by gravitational waves. We calculate
the propagator both for... | [
{
"created": "Wed, 27 Apr 2022 13:29:47 GMT",
"version": "v1"
},
{
"created": "Sat, 14 May 2022 10:42:38 GMT",
"version": "v2"
}
] | 2022-05-17 | [
[
"van Haasteren",
"Rens",
""
],
[
"Prokopec",
"Tomislav",
""
]
] | We construct the massive scalar propagator for planar gravitational wave backgrounds propagating on Minkowski space. We represent the propagator in terms of the Bessel's function of suitably deformed nonlocal distance functions, the deformation being caused by gravitational waves. We calculate the propagator both for n... |
gr-qc/9506049 | null | Giampiero Esposito | Quantization of Field Theories in the Presence of Boundaries | 11 pages, plain-tex, to appear in Proceedings of the XI Italian
Conference on General Relativity and Gravitational Physics, Trieste (Italy),
September 26-30, 1994; 1995 World Scientific Publishing Company | null | null | DSF preprint 95/30 | gr-qc | null | This paper reviews the progress made over the last five years in studying
boundary conditions and semiclassical properties of quantum fields about
4-real-dimensional Riemannian backgrounds. For massless spin-${1\over 2}$
fields one has a choice of spectral or supersymmetric boundary conditions, and
the corresponding ... | [
{
"created": "Fri, 23 Jun 1995 06:51:46 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Esposito",
"Giampiero",
""
]
] | This paper reviews the progress made over the last five years in studying boundary conditions and semiclassical properties of quantum fields about 4-real-dimensional Riemannian backgrounds. For massless spin-${1\over 2}$ fields one has a choice of spectral or supersymmetric boundary conditions, and the corresponding co... |
2111.10117 | Somayeh Hajkhalili | Seyed Hossein Hendi, Somayeh Hajkhalili, Mubasher Jamil and Mehrab
Momennia | Stability and phase transition of rotating Kaluza-Klein black holes | 16 pages | Eur. Phys. J. C (2021) 81:1112 | 10.1140/epjc/s10052-021-09836-9 | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | In this paper, we investigate thermodynamics and phase transitions of a
4-dimensional rotating Kaluza-Klein black hole solution in the presence of
Maxwell electrodynamics. Calculating the conserved and thermodynamical
quantities shows that the first law of thermodynamics is satisfied. To find the
stable black hole' s... | [
{
"created": "Fri, 19 Nov 2021 09:34:07 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Dec 2021 09:08:25 GMT",
"version": "v2"
}
] | 2021-12-23 | [
[
"Hendi",
"Seyed Hossein",
""
],
[
"Hajkhalili",
"Somayeh",
""
],
[
"Jamil",
"Mubasher",
""
],
[
"Momennia",
"Mehrab",
""
]
] | In this paper, we investigate thermodynamics and phase transitions of a 4-dimensional rotating Kaluza-Klein black hole solution in the presence of Maxwell electrodynamics. Calculating the conserved and thermodynamical quantities shows that the first law of thermodynamics is satisfied. To find the stable black hole' s c... |
1402.2817 | David Garfinkle | David Garfinkle | Matters of Gravity, The Newsletter of the Topical Group on Gravitation
of the American Physical Society, Volume 43, Winter 2014 | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | GGR News:
we hear that...
100 years ago
GGR program at the APS meeting in Savannah, GA
Conference reports:
GR20/Amaldi10 Conference in Warsaw, Poland
School and workshop on quantum gravity in Brazil
| [
{
"created": "Wed, 12 Feb 2014 13:49:21 GMT",
"version": "v1"
}
] | 2014-02-13 | [
[
"Garfinkle",
"David",
""
]
] | GGR News: we hear that... 100 years ago GGR program at the APS meeting in Savannah, GA Conference reports: GR20/Amaldi10 Conference in Warsaw, Poland School and workshop on quantum gravity in Brazil |
gr-qc/9404022 | Paul Sommers | Paul Sommers | The Role of the Future in Quantum Theory | 16 pages, LaTeX | null | null | null | gr-qc | null | Interpretation problems are eliminated from quantum theory by picturing a
quantum history as having been sampled from a probability distribution over the
set of histories which are permitted by all relevant boundary conditions. In
laboratory physics, the final measurement plays a crucial role in defining the
set of a... | [
{
"created": "Tue, 12 Apr 1994 18:15:18 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sommers",
"Paul",
""
]
] | Interpretation problems are eliminated from quantum theory by picturing a quantum history as having been sampled from a probability distribution over the set of histories which are permitted by all relevant boundary conditions. In laboratory physics, the final measurement plays a crucial role in defining the set of all... |
gr-qc/0605130 | Pantelis Apostolopoulos | Pantelis S Apostolopoulos and Jaume Carot | Uniqueness of Petrov type D spatially inhomogeneous irrotational silent
models | Latex, 19 pages, no figures;(v2) some clarification remarks and an
appendix are added; (v3) minor changes to match published version | Int.J.Mod.Phys.A22:1983-2006,2007 | 10.1142/S0217751X07036294 | null | gr-qc astro-ph | null | The consistency of the constraint with the evolution equations for spatially
inhomogeneous and irrotational silent (SIIS) models of Petrov type I, demands
that the former are preserved along the timelike congruence represented by the
velocity of the dust fluid, leading to \emph{new} non-trivial constraints. This
fact... | [
{
"created": "Thu, 25 May 2006 15:10:33 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Nov 2006 09:54:11 GMT",
"version": "v2"
},
{
"created": "Thu, 15 Feb 2007 11:15:34 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Apostolopoulos",
"Pantelis S",
""
],
[
"Carot",
"Jaume",
""
]
] | The consistency of the constraint with the evolution equations for spatially inhomogeneous and irrotational silent (SIIS) models of Petrov type I, demands that the former are preserved along the timelike congruence represented by the velocity of the dust fluid, leading to \emph{new} non-trivial constraints. This fact h... |
gr-qc/0405090 | Michele Vallisneri | Alessandra Buonanno, Yanbei Chen, Yi Pan, Michele Vallisneri | A quasi-physical family of gravity-wave templates for precessing
binaries of spinning compact objects: Application to double-spin precessing
binaries | REVTeX4, 11 EPS figures; a sequel to gr-qc/0310034; final PRD
version; small corrections to GW flux terms as per Blanchet et al., PRD 71,
129902(E)-129904(E) (2005) | Phys.Rev.D70:104003,2004; Erratum-ibid.D74:029902,2006 | 10.1103/PhysRevD.70.104003 10.1103/PhysRevD.74.029902 | null | gr-qc | null | The gravitational waveforms emitted during the adiabatic inspiral of
precessing binaries with two spinning compact bodies of comparable masses,
evaluated within the post-Newtonian approximation, can be reproduced rather
accurately by the waveforms obtained by setting one of the two spins to zero,
at least for the pur... | [
{
"created": "Mon, 17 May 2004 18:02:41 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Oct 2004 01:20:33 GMT",
"version": "v2"
},
{
"created": "Wed, 26 Jul 2006 15:38:04 GMT",
"version": "v3"
}
] | 2014-11-17 | [
[
"Buonanno",
"Alessandra",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Pan",
"Yi",
""
],
[
"Vallisneri",
"Michele",
""
]
] | The gravitational waveforms emitted during the adiabatic inspiral of precessing binaries with two spinning compact bodies of comparable masses, evaluated within the post-Newtonian approximation, can be reproduced rather accurately by the waveforms obtained by setting one of the two spins to zero, at least for the purpo... |
0705.3921 | Robert Carroll | Robert Carroll | Remarks on Weyl geometry and quantum mechanics | 25 pages, Latex, typos fixed, some embellishment, reference added,
typos corrected, some reorganization and clarification | null | null | null | gr-qc | null | A short survey of some material related to conformal general relativity
(CGR), integrable Weyl geometry, and Dirac-Weyl (DW) theory is given which
suggests that CGR is essentially equivalent to DW with quantum mass equivalent
to conformal mass, and various actions can be reformulated in terms of the
quantum potential... | [
{
"created": "Mon, 28 May 2007 00:25:14 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Jun 2007 02:16:39 GMT",
"version": "v2"
},
{
"created": "Thu, 3 Jan 2008 16:09:59 GMT",
"version": "v3"
}
] | 2008-01-03 | [
[
"Carroll",
"Robert",
""
]
] | A short survey of some material related to conformal general relativity (CGR), integrable Weyl geometry, and Dirac-Weyl (DW) theory is given which suggests that CGR is essentially equivalent to DW with quantum mass equivalent to conformal mass, and various actions can be reformulated in terms of the quantum potential. |
1503.04293 | Lorenzo Sebastiani | Ratbay Myrzakulov and Lorenzo Sebastiani | Spherically symmetric static vacuum solutions in Mimetic gravity | 9 pages, final version | Gen.Rel.Grav. 47 (2015) 8, 89 | 10.1007/s10714-015-1930-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we analyze spherically symmetric static vacuum solutions with
various topologies in mimetic gravity. When the Einstein's tensor is different
from zero, a new class of solutions different from the Schwarzschild one
emerges from the theory. We analyze the feature of the new solutions and we
study the plan... | [
{
"created": "Sat, 14 Mar 2015 11:35:51 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Jul 2015 09:21:35 GMT",
"version": "v2"
}
] | 2015-09-21 | [
[
"Myrzakulov",
"Ratbay",
""
],
[
"Sebastiani",
"Lorenzo",
""
]
] | In this paper we analyze spherically symmetric static vacuum solutions with various topologies in mimetic gravity. When the Einstein's tensor is different from zero, a new class of solutions different from the Schwarzschild one emerges from the theory. We analyze the feature of the new solutions and we study the planar... |
2012.15645 | Massimiliano Rinaldi | Manuel Bertipagani, Massimiliano Rinaldi, Lorenzo Sebastiani, and
Sergio Zerbini | Non-Singular Black Holes and mass inflation in modified gravity | version accepted for publication | null | 10.1016/j.dark.2021.100853 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically derive a class of non-singular, static and spherically
symmetric topological black hole metrics inF(R)-gravity. These have not a de
Sitter core at their centre, as most model in standard General Relativity. We
study the geometric properties and the motion of test particles around these
objects. Since ... | [
{
"created": "Thu, 31 Dec 2020 15:07:18 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Jul 2021 11:08:03 GMT",
"version": "v2"
}
] | 2021-07-07 | [
[
"Bertipagani",
"Manuel",
""
],
[
"Rinaldi",
"Massimiliano",
""
],
[
"Sebastiani",
"Lorenzo",
""
],
[
"Zerbini",
"Sergio",
""
]
] | We analytically derive a class of non-singular, static and spherically symmetric topological black hole metrics inF(R)-gravity. These have not a de Sitter core at their centre, as most model in standard General Relativity. We study the geometric properties and the motion of test particles around these objects. Since th... |
1512.06982 | T. P. Singh | Tejinder P. Singh | General relativity, torsion, and quantum theory | 14 pages; published in Current Science [Special Section: 100 Years of
General Relativity] | Current Science 109 (2015) 2258 | 10.18520/v109/i12/2258-2264 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We recall some of the obstacles which arise when one tries to reconcile the
general theory of relativity with quantum theory. We consider the possibility
that gravitation theories which include torsion, and not only curvature,
provide better insight into a quantum theory of gravity. We speculate on how
the Dirac equa... | [
{
"created": "Tue, 22 Dec 2015 08:56:17 GMT",
"version": "v1"
}
] | 2015-12-23 | [
[
"Singh",
"Tejinder P.",
""
]
] | We recall some of the obstacles which arise when one tries to reconcile the general theory of relativity with quantum theory. We consider the possibility that gravitation theories which include torsion, and not only curvature, provide better insight into a quantum theory of gravity. We speculate on how the Dirac equati... |
gr-qc/0601038 | Hongbao Zhang | Bo Hu, Yi Ling and Hongbao Zhang | Quantum inequalities for massless spin-3/2 field in Minkowski spacetime | revtex4, 6 pages, accepted to be published in PRD, minor corrections,
typos corrected | Phys.Rev.D73:045015,2006 | 10.1103/PhysRevD.73.045015 | null | gr-qc hep-th math-ph math.MP | null | Quantum inequalities have been established for various quantum fields in both
flat and curved spacetimes. In particular, for spin-3/2 fields, Yu and Wu have
explicitly derived quantum inequalities for massive case. Employing the similar
method developed by Fewster and colleagues, this paper provides an explicit
formu... | [
{
"created": "Tue, 10 Jan 2006 13:53:29 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Jan 2006 04:05:58 GMT",
"version": "v2"
},
{
"created": "Sun, 29 Jan 2006 09:01:38 GMT",
"version": "v3"
},
{
"created": "Fri, 17 Feb 2006 12:31:52 GMT",
"version": "v4"
},
{
"c... | 2008-11-26 | [
[
"Hu",
"Bo",
""
],
[
"Ling",
"Yi",
""
],
[
"Zhang",
"Hongbao",
""
]
] | Quantum inequalities have been established for various quantum fields in both flat and curved spacetimes. In particular, for spin-3/2 fields, Yu and Wu have explicitly derived quantum inequalities for massive case. Employing the similar method developed by Fewster and colleagues, this paper provides an explicit formula... |
2209.04240 | Shafqat Ul Islam | Jitendra Kumar, Shafqat Ul Islam, Sushant G. Ghosh | Testing strong gravitational lensing effects by supermassive compact
objects with regular spacetimes | 20 Pages, 18 Figures, 5 Tables. Text matched with published version | ApJ 938, 104 (2022) | 10.3847/1538-4357/ac912c | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We compare and contrast gravitational lensing, in the strong-field limit, by
photon sphere in spherically symmetric regular electrically charged (REC) black
holes ($0<b\leq b_E$) and with those by corresponding REC no-horizon spacetimes
($b>b_E$). Here, $b$ is additional parameter due to charge and the value $b=b_E
\... | [
{
"created": "Fri, 9 Sep 2022 10:56:16 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Oct 2022 14:43:44 GMT",
"version": "v2"
}
] | 2022-10-21 | [
[
"Kumar",
"Jitendra",
""
],
[
"Islam",
"Shafqat Ul",
""
],
[
"Ghosh",
"Sushant G.",
""
]
] | We compare and contrast gravitational lensing, in the strong-field limit, by photon sphere in spherically symmetric regular electrically charged (REC) black holes ($0<b\leq b_E$) and with those by corresponding REC no-horizon spacetimes ($b>b_E$). Here, $b$ is additional parameter due to charge and the value $b=b_E \ap... |
1107.0698 | Rafael Sorkin | Rafael D. Sorkin | Scalar Field Theory on a Causal Set in Histories Form | plainTeX, 25 pages, no figures. One paragraph added, other small
changes. Most current version is available at
http://www.perimeterinstitute.ca/personal/rsorkin/some.papers/142.causet.dcf.pdf
(or wherever my home-page may be, such as
http://www.physics.syr.edu/~sorkin/some.papers/) | J.Phys.Conf.Ser.306:012017,2011 | 10.1088/1742-6596/306/1/012017 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We recast into histories-based form a quantum field theory defined earlier in
operator language for a free scalar field on a background causal set. The
resulting decoherence-functional resembles that of the continuum theory. The
counterpart of the d'Alembertian operator is nonlocal and is a generalized
inverse of the... | [
{
"created": "Mon, 4 Jul 2011 18:27:08 GMT",
"version": "v1"
},
{
"created": "Sun, 5 Feb 2017 05:31:26 GMT",
"version": "v2"
}
] | 2017-02-07 | [
[
"Sorkin",
"Rafael D.",
""
]
] | We recast into histories-based form a quantum field theory defined earlier in operator language for a free scalar field on a background causal set. The resulting decoherence-functional resembles that of the continuum theory. The counterpart of the d'Alembertian operator is nonlocal and is a generalized inverse of the d... |
1802.08749 | Hossein Ghaffarnejad | H. Ghaffarnejad, E. Yaraie, M. Farsam | Quintessence Reissner Nordstr\"om Anti de Sitter Black Holes and Joule
Thomson effect | 18 pages, 3 figures, International Journal of Theoretical Physics
2018 | International Journal of Theoretical Physics 2018 | 10.1007/s10773-018-3693-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we investigate corrections of the quintessence regime of the
dark energy on the Joule-Thomson (JT) effect of the Reissner Nordstr\"om anti
de Sitter (RNAdS) black hole. The quintessence dark energy has equation of
state as $p_q=\omega\rho_q$ in which $-1<\omega<-\frac{1}{3}.$ Our calculations
are restric... | [
{
"created": "Sat, 24 Feb 2018 09:37:01 GMT",
"version": "v1"
}
] | 2020-01-23 | [
[
"Ghaffarnejad",
"H.",
""
],
[
"Yaraie",
"E.",
""
],
[
"Farsam",
"M.",
""
]
] | In this work we investigate corrections of the quintessence regime of the dark energy on the Joule-Thomson (JT) effect of the Reissner Nordstr\"om anti de Sitter (RNAdS) black hole. The quintessence dark energy has equation of state as $p_q=\omega\rho_q$ in which $-1<\omega<-\frac{1}{3}.$ Our calculations are restricte... |
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