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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0902.3746 | Orlando Luongo | Orlando Luongo and Carmine Autieri | Scale-Free model for governing universe dynamics | 7 pages, 4 figures | null | 10.1209/0295-5075/90/39001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the effects of scale-free model on cosmology, providing, in
this way, a statistical background in the framework of general relativity. In
order to discuss properties and time evolution of some relevant universe
dynamical parameters (cosmographic parameters), such as $H(t)$ (Hubble
parameter), $q(t)$ (d... | [
{
"created": "Sat, 21 Feb 2009 16:37:46 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Feb 2009 19:31:30 GMT",
"version": "v2"
},
{
"created": "Sat, 25 Apr 2009 15:20:31 GMT",
"version": "v3"
}
] | 2015-05-13 | [
[
"Luongo",
"Orlando",
""
],
[
"Autieri",
"Carmine",
""
]
] | We investigate the effects of scale-free model on cosmology, providing, in this way, a statistical background in the framework of general relativity. In order to discuss properties and time evolution of some relevant universe dynamical parameters (cosmographic parameters), such as $H(t)$ (Hubble parameter), $q(t)$ (dec... |
gr-qc/9611062 | BoB | Roberto Casadio (Dipartimento di Fisica, Universita' di Bologna and
I.N.F.N., Sezione di Bologna, Italy) | Semiclassical Collapse of a Sphere of Dust and Hawking Radiation | LaTeX, 4 pages, talk given at the "Second conference on constrained
dynamics and quantum gravity", Santa Margherita Ligure, Italy, 17-21
September 1996. To appear in the proceedings | Nucl.Phys.Proc.Suppl. 57 (1997) 177-180 | 10.1016/S0920-5632(97)00367-8 | null | gr-qc | null | The independent dynamical variables of a collapsing homogeneous sphere of
dust are canonically quantised and coupled equations describing matter (dust)
and gravitation are obtained. The conditions for the validity of the adiabatic
(Born-Oppenheimer) and semiclassical approximations are derived. On neglecting
back-rea... | [
{
"created": "Tue, 26 Nov 1996 08:51:32 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Casadio",
"Roberto",
"",
"Dipartimento di Fisica, Universita' di Bologna and\n I.N.F.N., Sezione di Bologna, Italy"
]
] | The independent dynamical variables of a collapsing homogeneous sphere of dust are canonically quantised and coupled equations describing matter (dust) and gravitation are obtained. The conditions for the validity of the adiabatic (Born-Oppenheimer) and semiclassical approximations are derived. On neglecting back-react... |
gr-qc/0501024 | Charles Wang | Charles H.-T. Wang | Conformal geometrodynamics: True degrees of freedom in a truly canonical
structure | 8 pages, REVTeX, Final version with improved presentation to appear
in PRD | Phys.Rev. D71 (2005) 124026 | 10.1103/PhysRevD.71.124026 | null | gr-qc | null | The standard geometrodynamics is transformed into a theory of conformal
geometrodynamics by extending the ADM phase space for canonical general
relativity to that consisting of York's mean exterior curvature time, conformal
three-metric and their momenta. Accordingly, an additional constraint is
introduced, called th... | [
{
"created": "Sat, 8 Jan 2005 19:18:05 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Jan 2005 14:50:00 GMT",
"version": "v2"
},
{
"created": "Fri, 4 Mar 2005 21:59:52 GMT",
"version": "v3"
},
{
"created": "Sun, 5 Jun 2005 20:06:33 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Wang",
"Charles H. -T.",
""
]
] | The standard geometrodynamics is transformed into a theory of conformal geometrodynamics by extending the ADM phase space for canonical general relativity to that consisting of York's mean exterior curvature time, conformal three-metric and their momenta. Accordingly, an additional constraint is introduced, called the ... |
2311.04682 | Abbas Sherif | Abbas M. Sherif | On the existence of conformal Killing horizons in LRS spacetimes | 16 pages, no figure, minor typos corrected, accepted for publication
in Gen. Relativ. Gravit | Gen Relativ Gravit 56, 15 (2024) | 10.1007/s10714-024-03197-w | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Let $M$ be a locally rotationally symmetric spacetime, and $\xi^a$ a
conformal Killing vector for the metric on $M$, lying in the subspace spanned
by the unit timelike direction and the preferred spatial direction, and with
non-constant components. Under the assumption that the divergence of $\xi^a$
has no critical p... | [
{
"created": "Wed, 8 Nov 2023 13:42:10 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Jan 2024 04:05:26 GMT",
"version": "v2"
}
] | 2024-02-02 | [
[
"Sherif",
"Abbas M.",
""
]
] | Let $M$ be a locally rotationally symmetric spacetime, and $\xi^a$ a conformal Killing vector for the metric on $M$, lying in the subspace spanned by the unit timelike direction and the preferred spatial direction, and with non-constant components. Under the assumption that the divergence of $\xi^a$ has no critical poi... |
gr-qc/0609090 | Spiros Cotsakis | John Miritzis, Spiros Cotsakis | Singularities of varying light speed cosmologies | 7 pages, 2 figures, uses iop style files, to appear in the
Proceedings of the Greek Relativity Meeting NEB12, June 29-July 2, 2006,
Nauplia, Greece | J.Phys.Conf.Ser.68:012019,2007 | 10.1088/1742-6596/68/1/012019 | null | gr-qc | null | We study the possible singularities of isotropic cosmological models that
have a varying speed of light as well as a varying gravitational constant. The
field equations typically reduce to two dimensional systems which are then
analyzed both by dynamical systems techniques in phase space and by applying
the method of... | [
{
"created": "Thu, 21 Sep 2006 11:59:18 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Miritzis",
"John",
""
],
[
"Cotsakis",
"Spiros",
""
]
] | We study the possible singularities of isotropic cosmological models that have a varying speed of light as well as a varying gravitational constant. The field equations typically reduce to two dimensional systems which are then analyzed both by dynamical systems techniques in phase space and by applying the method of a... |
1105.5086 | Mehrdad Farhoudi Dr. | S.M. M. Rasouli, Mehrdad Farhoudi and Hamid R. Sepangi | Anisotropic Cosmological Model in Modified Brans--Dicke Theory | 20 pages, 4 figures | Class. Quant. Grav. 28 (No. 15) (2011) 155004 | 10.1088/0264-9381/28/15/155004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has been shown that four dimensional Brans-Dicke theory with effective
matter field and self interacting potential can be achieved from vacuum 5D BD
field equations, where we refer to as modified Brans-Dicke theory (MBDT). We
investigate a generalized Bianchi type I anisotropic cosmology in 5D BD theory,
and by em... | [
{
"created": "Wed, 25 May 2011 16:55:42 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Rasouli",
"S. M. M.",
""
],
[
"Farhoudi",
"Mehrdad",
""
],
[
"Sepangi",
"Hamid R.",
""
]
] | It has been shown that four dimensional Brans-Dicke theory with effective matter field and self interacting potential can be achieved from vacuum 5D BD field equations, where we refer to as modified Brans-Dicke theory (MBDT). We investigate a generalized Bianchi type I anisotropic cosmology in 5D BD theory, and by empl... |
2109.10236 | Paola Zizzi | Paola Zizzi | Quantum Holography from Fermion Fields | 18 pages, 1 figure | Quantum Rep. 2021, 3, 576 | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | We demonstrate, in the context of Loop Quantum Gravity, the Quantum
Holographic Principle, according to which the area of the boundary surface
enclosing a region of space encodes a qubit per Planck unit. To this aim, we
introduce fermion fields in the bulk, whose boundary surface is the
two-dimensional sphere. The do... | [
{
"created": "Mon, 20 Sep 2021 11:30:34 GMT",
"version": "v1"
}
] | 2021-09-22 | [
[
"Zizzi",
"Paola",
""
]
] | We demonstrate, in the context of Loop Quantum Gravity, the Quantum Holographic Principle, according to which the area of the boundary surface enclosing a region of space encodes a qubit per Planck unit. To this aim, we introduce fermion fields in the bulk, whose boundary surface is the two-dimensional sphere. The doub... |
1601.06397 | Apimook Watcharangkool | Mairi Sakellariadou and Apimook Watcharangkool | Linear stability of noncommutative spectral geometry | 14 pages | Phys. Rev. D 93, 064034 (2016) | 10.1103/PhysRevD.93.064034 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the spectral action within the context of a 4-dimensional
manifold with torsion and show that, in the vacuum case, the equations of
motion reduce to Einstein's equations, securing the linear stability of the
theory. To subsequently investigate the nonvacuum case, we consider the
spectral action of an almo... | [
{
"created": "Sun, 24 Jan 2016 15:27:16 GMT",
"version": "v1"
}
] | 2016-03-23 | [
[
"Sakellariadou",
"Mairi",
""
],
[
"Watcharangkool",
"Apimook",
""
]
] | We consider the spectral action within the context of a 4-dimensional manifold with torsion and show that, in the vacuum case, the equations of motion reduce to Einstein's equations, securing the linear stability of the theory. To subsequently investigate the nonvacuum case, we consider the spectral action of an almost... |
1605.08404 | Vasilis Oikonomou | V.K. Oikonomou | Some Classes of Gravitational Shock Waves from Higher Order Theories of
Gravity | Major revision, refs added, typos corrected | null | 10.1007/s10509-017-3014-2 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the gravitational shock wave generated by a massless high energy
particle in the context of higher order gravities of the form $F(R,R_{\mu
\nu}R^{\mu \nu},R_{\mu \nu \alpha \beta}R^{\mu \nu \alpha \beta})$. In the case
of $F(R)$ gravity, we investigate the gravitational shock wave solutions
corresponding to ... | [
{
"created": "Thu, 26 May 2016 18:50:04 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Jun 2016 13:59:14 GMT",
"version": "v2"
}
] | 2017-01-25 | [
[
"Oikonomou",
"V. K.",
""
]
] | We study the gravitational shock wave generated by a massless high energy particle in the context of higher order gravities of the form $F(R,R_{\mu \nu}R^{\mu \nu},R_{\mu \nu \alpha \beta}R^{\mu \nu \alpha \beta})$. In the case of $F(R)$ gravity, we investigate the gravitational shock wave solutions corresponding to va... |
gr-qc/0505084 | Sergio del Campo | Sergio del Campo (PUCV) and Ramon Herrera (UNAB) | Extended closed inflationary universes | 9 pages, 4 figures, accepted by Class. Quant. Grav | Class.Quant.Grav. 22 (2005) 2687-2700 | 10.1088/0264-9381/22/13/012 | null | gr-qc astro-ph hep-th | null | In this paper we study a type of model for closed inflationary universe
models using the Jordan-Brans-Dicke theory. Herein we determine and
characterize the existence of $\Omega>$1, together with the period of
inflation. We have found that our model, which takes into account a
Jordan-Brans-Dicke type of theory, is le... | [
{
"created": "Tue, 17 May 2005 20:19:31 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"del Campo",
"Sergio",
"",
"PUCV"
],
[
"Herrera",
"Ramon",
"",
"UNAB"
]
] | In this paper we study a type of model for closed inflationary universe models using the Jordan-Brans-Dicke theory. Herein we determine and characterize the existence of $\Omega>$1, together with the period of inflation. We have found that our model, which takes into account a Jordan-Brans-Dicke type of theory, is less... |
2105.06968 | Alesandro Santos | A. F. Santos, S. C. Ulhoa, E. P. Spaniol and Faqir C. Khanna | On Gravitational Stefan-Boltzmann Law and Casimir Effect in FRW Universe | 12 pages, accepted for publication in General Relativity and
Gravitation | null | 10.1007/s10714-021-02826-y | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Both Stefan-Boltzmann law and the Casimir effect, in a universe described by
the FRW metric with zero curvature, are calculated. These effects are described
by Thermo Field Dynamics (TFD). The gravitational energy-momentum tensor is
defined in the context of Teleparallel Equivalent to General Relativity (TEGR).
Each ... | [
{
"created": "Fri, 14 May 2021 17:17:58 GMT",
"version": "v1"
}
] | 2022-04-20 | [
[
"Santos",
"A. F.",
""
],
[
"Ulhoa",
"S. C.",
""
],
[
"Spaniol",
"E. P.",
""
],
[
"Khanna",
"Faqir C.",
""
]
] | Both Stefan-Boltzmann law and the Casimir effect, in a universe described by the FRW metric with zero curvature, are calculated. These effects are described by Thermo Field Dynamics (TFD). The gravitational energy-momentum tensor is defined in the context of Teleparallel Equivalent to General Relativity (TEGR). Each of... |
1501.06184 | Marjan Elmizadeh | M. Elmizadeh | Conformal Auxiliary "Massless" Spin-2 Field in de Sitter Space | arXiv admin note: text overlap with arXiv:1105.3060 by other authors | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Respecting the group theoretical approach, it is discussed that the linear
conformal gravity can be written in terms of a mixed symmetry tensor field of
rank-3 \cite{binegar}. Following this path, related field equation was obtained
in de Sitter space \cite{fatemi}. It was proved that this kind of tensor field
in de ... | [
{
"created": "Sun, 25 Jan 2015 17:00:40 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Feb 2015 16:33:30 GMT",
"version": "v2"
}
] | 2015-02-06 | [
[
"Elmizadeh",
"M.",
""
]
] | Respecting the group theoretical approach, it is discussed that the linear conformal gravity can be written in terms of a mixed symmetry tensor field of rank-3 \cite{binegar}. Following this path, related field equation was obtained in de Sitter space \cite{fatemi}. It was proved that this kind of tensor field in de Si... |
gr-qc/0005128 | Uzan | Jean-Philippe Uzan, Roland Lehoucq and Jean-Pierre Luminet | New Developments in the Search for the Topology of the Universe | 20 pages, 13 figures, Proceedings of the XIXth Texas meeting, Paris
14-18 december 1998, Proceedings of the XIXth Texas meeting, Eds. E. Aubourg,
T. Montmerle, J. Paul and P. Peter, article-no: 04/25 | null | null | null | gr-qc | null | Multi-connected Universe models with space idenfication scales smaller than
the size of the observable universe produce topological images in the catalogs
of cosmic sources. In this review, we present the recent developments for the
search of the topology of the universe focusing on three dimensional methods.
We pres... | [
{
"created": "Tue, 30 May 2000 08:28:05 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Uzan",
"Jean-Philippe",
""
],
[
"Lehoucq",
"Roland",
""
],
[
"Luminet",
"Jean-Pierre",
""
]
] | Multi-connected Universe models with space idenfication scales smaller than the size of the observable universe produce topological images in the catalogs of cosmic sources. In this review, we present the recent developments for the search of the topology of the universe focusing on three dimensional methods. We presen... |
0909.4676 | Otto Kong | Otto C. W. Kong and Hung-Yi Lee (Nat'l Central U., Taiwan) | Poincare-Snyder Relativity with Quantization | 17 pages in revtex, no figure | null | null | NCU-HEP-k036 | gr-qc math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on a linear realization formulation of a quantum relativity -- the
proposed relativity for quantum `space-time', we introduce the
Poincar\'e-Snyder relativity and Snyder relativity as relativities in between
the latter and the well known Galilean and Einstein cases. We discuss how the
Poincar\'e-Snyder relativi... | [
{
"created": "Fri, 25 Sep 2009 12:19:37 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Oct 2010 08:12:48 GMT",
"version": "v2"
}
] | 2010-10-19 | [
[
"Kong",
"Otto C. W.",
"",
"Nat'l Central U., Taiwan"
],
[
"Lee",
"Hung-Yi",
"",
"Nat'l Central U., Taiwan"
]
] | Based on a linear realization formulation of a quantum relativity -- the proposed relativity for quantum `space-time', we introduce the Poincar\'e-Snyder relativity and Snyder relativity as relativities in between the latter and the well known Galilean and Einstein cases. We discuss how the Poincar\'e-Snyder relativity... |
1310.6420 | Victor Varela | Victor Varela | A note on linearized stability of Schwarzschild thin-shell wormholes
with variable equations of state | Fifth version. 15 pages. Almost completely rewritten. Extended
analysis. New references | Phys. Rev. D 92, 044002 (2015) | 10.1103/PhysRevD.92.044002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss how the assumption of variable equation of state (EoS) allows the
elimination of the instability at equilibrium throat radius $a_0=3M$ featured
by previous Schwarzschild thin-shell wormhole models. Unobstructed stability
regions are found for three choices of variable EoS. Two of these EoS entail
linear st... | [
{
"created": "Wed, 23 Oct 2013 22:36:36 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Dec 2013 12:39:08 GMT",
"version": "v2"
},
{
"created": "Tue, 24 Dec 2013 18:54:31 GMT",
"version": "v3"
},
{
"created": "Thu, 6 Feb 2014 23:55:03 GMT",
"version": "v4"
},
{
"cr... | 2015-08-19 | [
[
"Varela",
"Victor",
""
]
] | We discuss how the assumption of variable equation of state (EoS) allows the elimination of the instability at equilibrium throat radius $a_0=3M$ featured by previous Schwarzschild thin-shell wormhole models. Unobstructed stability regions are found for three choices of variable EoS. Two of these EoS entail linear stab... |
1909.01827 | Fay\c{c}al Hammad | Alexandre Landry and Fay\c{c}al Hammad | Landau levels in a gravitational field: The Schwarzschild spacetime case | 37 pages, no figures, matches the published version | Universe 7(5), 144 (2021) | 10.3390/universe7050144 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the gravitational effect on Landau levels. We show that the
familiar infinite Landau degeneracy of the energy levels of a quantum particle
moving inside a uniform and constant magnetic field is removed by the
interaction of the particle with a gravitational field. Two independent
approaches are used to... | [
{
"created": "Mon, 2 Sep 2019 22:48:50 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Oct 2020 12:13:19 GMT",
"version": "v2"
},
{
"created": "Tue, 18 May 2021 17:43:44 GMT",
"version": "v3"
}
] | 2021-05-19 | [
[
"Landry",
"Alexandre",
""
],
[
"Hammad",
"Fayçal",
""
]
] | We investigate the gravitational effect on Landau levels. We show that the familiar infinite Landau degeneracy of the energy levels of a quantum particle moving inside a uniform and constant magnetic field is removed by the interaction of the particle with a gravitational field. Two independent approaches are used to s... |
0706.3096 | Wuming Yang | W. M. Yang and S. L. Bi | The frequency separations of stellar p-modes | Accepted for Publication in A&A, 8 pages, 5 figures | A&A 472, 571-576 (2007) | 10.1051/0004-6361:20077082 | null | gr-qc | null | Aims. The purpose of this work is to investigate a new frequency separation
of stellar p-modes and its characteristics. Methods. Frequency separations are
deduced from the asymptotic formula of stellar p-modes. Then, using the
theoretical adiabatic frequencies of stellar model, we compute the frequency
separations. R... | [
{
"created": "Thu, 21 Jun 2007 08:06:18 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Sep 2007 16:13:38 GMT",
"version": "v2"
}
] | 2007-09-03 | [
[
"Yang",
"W. M.",
""
],
[
"Bi",
"S. L.",
""
]
] | Aims. The purpose of this work is to investigate a new frequency separation of stellar p-modes and its characteristics. Methods. Frequency separations are deduced from the asymptotic formula of stellar p-modes. Then, using the theoretical adiabatic frequencies of stellar model, we compute the frequency separations. Res... |
2210.10103 | Alejandro Corichi | Alejandro Corichi and Dario N\'u\~nez | Introduction to the ADM formalism | 23 pages, 3 figures. Published in 1991, in Spanish. Translated into
English by Ribhu Paul. V2 has corrected typos. The authors have made no
effort to update it nor its bibliography. We hope, however, that by making it
publicly available it may be useful for students interested in learning the
3+1 formalism of g... | Rev. Mex. Fis. 37, No 4, 720-747 (1991) | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The authors present concepts and mathematical developments which give rise to
the Hamiltonian formulation of Einstein's general relativity, first introduced
by Arnowitt, Deser, and Misner. All the geometrical quantities needed for the
construction are explicitly obtained, and examples of some of the application
of th... | [
{
"created": "Tue, 18 Oct 2022 19:00:13 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Aug 2023 17:35:30 GMT",
"version": "v2"
}
] | 2023-08-23 | [
[
"Corichi",
"Alejandro",
""
],
[
"Núñez",
"Dario",
""
]
] | The authors present concepts and mathematical developments which give rise to the Hamiltonian formulation of Einstein's general relativity, first introduced by Arnowitt, Deser, and Misner. All the geometrical quantities needed for the construction are explicitly obtained, and examples of some of the application of the ... |
2304.09847 | Grigory Volovik | G.E. Volovik | On the global temperature of the Schwarzschild-de Sitter spacetime | 5 pages, no figures, continuation of the paper G.E. Volovik, Ann.
Phys. 449, 169219 (2023), version accepted in JETP Letters | null | 10.1134/S0021364023601173 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the Schwarzschild-de Sitter (SdS) spacetime has the
fundamental temperature. This temperature describes the thermal processes of
decay of the composite particles and the other processes, which are
energetically forbidden in the Minkowski spacetime, but are allowed in the de
Sitter and in SdS backgrou... | [
{
"created": "Tue, 18 Apr 2023 13:20:02 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Apr 2023 14:25:38 GMT",
"version": "v2"
},
{
"created": "Tue, 25 Apr 2023 15:25:16 GMT",
"version": "v3"
},
{
"created": "Fri, 28 Apr 2023 12:03:00 GMT",
"version": "v4"
},
{
"c... | 2023-07-12 | [
[
"Volovik",
"G. E.",
""
]
] | It is shown that the Schwarzschild-de Sitter (SdS) spacetime has the fundamental temperature. This temperature describes the thermal processes of decay of the composite particles and the other processes, which are energetically forbidden in the Minkowski spacetime, but are allowed in the de Sitter and in SdS background... |
0905.1355 | Francisco Lobo | Tiberiu Harko, Zolt\'an Kov\'acs, Francisco S. N. Lobo | Can accretion disk properties distinguish gravastars from black holes? | 12 pages, 12 figures. V2: 14 pages, significant discussion and
references added, to appear in Class.Quant.Grav | Class.Quant.Grav.26:215006,2009 | 10.1088/0264-9381/26/21/215006 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravastars, hypothetic astrophysical objects, consisting of a dark energy
condensate surrounded by a strongly correlated thin shell of anisotropic
matter, have been proposed as an alternative to the standard black hole picture
of general relativity. Observationally distinguishing between astrophysical
black holes and... | [
{
"created": "Fri, 8 May 2009 22:16:20 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Sep 2009 20:52:42 GMT",
"version": "v2"
}
] | 2009-10-06 | [
[
"Harko",
"Tiberiu",
""
],
[
"Kovács",
"Zoltán",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | Gravastars, hypothetic astrophysical objects, consisting of a dark energy condensate surrounded by a strongly correlated thin shell of anisotropic matter, have been proposed as an alternative to the standard black hole picture of general relativity. Observationally distinguishing between astrophysical black holes and g... |
2301.08331 | Suvrat Rao | Suvrat Rao, Julia Baumgarten, Jochen Liske and Marcus Br\"uggen | Detection of gravitational waves in circular particle accelerators II.
Response analysis and parameter estimation using synthetic data | This manuscript is the updated version of arXiv:2301.08331v2, and has
been accepted for publication as a Regular Article in Physical Review D
(PRD). 25 pages, 11 figures | null | null | null | gr-qc astro-ph.IM hep-ph physics.acc-ph physics.ins-det | http://creativecommons.org/licenses/by/4.0/ | We simulate the response of a Storage Ring Gravitational-Wave Observatory
(SRGO) to astrophysical millihertz (mHz) gravitational waves (GWs), numerically
obtaining its sensitivity curve and optimal choices for some controllable
experiment parameters. We also generate synthetic noisy GW data and use Markov
Chain Monte... | [
{
"created": "Wed, 18 Jan 2023 05:41:36 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Jan 2024 16:21:11 GMT",
"version": "v2"
},
{
"created": "Tue, 11 Jun 2024 22:00:56 GMT",
"version": "v3"
}
] | 2024-06-13 | [
[
"Rao",
"Suvrat",
""
],
[
"Baumgarten",
"Julia",
""
],
[
"Liske",
"Jochen",
""
],
[
"Brüggen",
"Marcus",
""
]
] | We simulate the response of a Storage Ring Gravitational-Wave Observatory (SRGO) to astrophysical millihertz (mHz) gravitational waves (GWs), numerically obtaining its sensitivity curve and optimal choices for some controllable experiment parameters. We also generate synthetic noisy GW data and use Markov Chain Monte C... |
1905.07229 | Gamal G.L. Nashed | G.G.L. Nashed and Kazuharu Bamba | Charged (A)dS black hole solutions in conformal teleparallel equivalent
of general relativity | 12 pages | Phys. Rev. D 101, 044029 (2020) | 10.1103/PhysRevD.101.044029 | FU-PCG-65 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We continue our study in 4-dimension to derive non-charged and charged
(Anti)-de Sitter black hole solutions in conformal teleparallel equivalent of
general relativity. The non-charged and charged equations of motion are applied
to a spherically symmetric tetrad and the non-linear differential equations are
derived. ... | [
{
"created": "Tue, 14 May 2019 15:02:05 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Aug 2019 15:27:20 GMT",
"version": "v2"
},
{
"created": "Tue, 28 Jan 2020 08:37:28 GMT",
"version": "v3"
},
{
"created": "Wed, 25 Mar 2020 10:07:54 GMT",
"version": "v4"
}
] | 2020-03-26 | [
[
"Nashed",
"G. G. L.",
""
],
[
"Bamba",
"Kazuharu",
""
]
] | We continue our study in 4-dimension to derive non-charged and charged (Anti)-de Sitter black hole solutions in conformal teleparallel equivalent of general relativity. The non-charged and charged equations of motion are applied to a spherically symmetric tetrad and the non-linear differential equations are derived. It... |
1406.6600 | Aur\'elien Hees | A. Hees, S. Bertone, C. Le Poncin-Lafitte | Light propagation in the field of a moving axisymmetric body: theory and
application to JUNO | 17 pages, 4 figures, submitted to Phys. Rev. D, some corrections
after review | Phys. Rev. D 90, 084020, 2014 | 10.1103/PhysRevD.90.084020 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given the extreme accuracy of modern space science, a precise relativistic
modeling of observations is required. We use the Time Transfer Functions
formalism to study light propagation in the field of uniformly moving
axisymmetric bodies, which extends the field of application of previous works.
We first present a sp... | [
{
"created": "Wed, 25 Jun 2014 15:01:23 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Sep 2014 16:53:07 GMT",
"version": "v2"
}
] | 2014-10-15 | [
[
"Hees",
"A.",
""
],
[
"Bertone",
"S.",
""
],
[
"Poncin-Lafitte",
"C. Le",
""
]
] | Given the extreme accuracy of modern space science, a precise relativistic modeling of observations is required. We use the Time Transfer Functions formalism to study light propagation in the field of uniformly moving axisymmetric bodies, which extends the field of application of previous works. We first present a spac... |
1103.0075 | Hamid Reza Sepangi | Z. Haghani, H. R. Sepangi and S. Shahidi | Anisotropy in Born-Infeld brane cosmology | 7 pages, 3 figures, to appear in PRD | Phys.Rev.D83:064014,2011 | 10.1103/PhysRevD.83.064014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The accelerated expansion of the universe together with its present day
isotropy has posed an interesting challenge to the numerous model theories
presented over the years to describe them. In this paper, we address the above
questions in the context of a brane-world model where the universe is filled
with a Born-Inf... | [
{
"created": "Tue, 1 Mar 2011 04:14:07 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Apr 2011 06:59:08 GMT",
"version": "v2"
}
] | 2011-04-04 | [
[
"Haghani",
"Z.",
""
],
[
"Sepangi",
"H. R.",
""
],
[
"Shahidi",
"S.",
""
]
] | The accelerated expansion of the universe together with its present day isotropy has posed an interesting challenge to the numerous model theories presented over the years to describe them. In this paper, we address the above questions in the context of a brane-world model where the universe is filled with a Born-Infel... |
gr-qc/0004077 | Rainer E. Zimmermann | Rainer E. Zimmermann | Loops and Knots as Topoi of Substance. Spinoza Revisited | 42 pages | null | null | null | gr-qc | null | The relationship between modern philosophy and physics is discussed. It is
shown that the latter develops some need for a modernized metaphysics which
shows up as an ultima philosophia of considerable heuristic value, rather than
as the prima philosophia in the Aristotelian sense as it had been intended, in
the first... | [
{
"created": "Thu, 27 Apr 2000 11:06:22 GMT",
"version": "v1"
},
{
"created": "Tue, 23 May 2000 09:20:13 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Zimmermann",
"Rainer E.",
""
]
] | The relationship between modern philosophy and physics is discussed. It is shown that the latter develops some need for a modernized metaphysics which shows up as an ultima philosophia of considerable heuristic value, rather than as the prima philosophia in the Aristotelian sense as it had been intended, in the first p... |
gr-qc/0602060 | E. M. Monte | E. M. Monte | Geometric Constraint in Brane-World | 4 pages. Proceedings of 10th Marcel Grossmann Meeting on Recent
Developments in Theoretical and Experimental General Relativity, Gravitation
and Relativistic Field Theories (MG X MMIII), Rio de Janeiro, Brazil, 20-26
Jul 2003 | null | null | null | gr-qc | null | The brane-worlds model was inspired partly by Kaluza-Klein's theory, where
the gravitation and the gauge fields are obtained of a geometry of higher
dimension (bulk). Such a model has been showing positive in the sense of we
find perspectives and probably deep modifications in the physics, such as:
Unification in a s... | [
{
"created": "Wed, 15 Feb 2006 12:04:47 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Monte",
"E. M.",
""
]
] | The brane-worlds model was inspired partly by Kaluza-Klein's theory, where the gravitation and the gauge fields are obtained of a geometry of higher dimension (bulk). Such a model has been showing positive in the sense of we find perspectives and probably deep modifications in the physics, such as: Unification in a sca... |
gr-qc/0410058 | Beverly K. Berger | Beverly K. Berger | Why Solve the Hamiltonian Constraint in Numerical Relativity? | Submitted to a volume in honor of Michael P. Ryan, Jr. Based on talk
given at GR17 | Gen.Rel.Grav. 38 (2006) 625-632 | 10.1007/s10714-006-0252-y | null | gr-qc | null | The indefinite sign of the Hamiltonian constraint means that solutions to
Einstein's equations must achieve a delicate balance--often among numerically
large terms that nearly cancel. If numerical errors cause a violation of the
Hamiltonian constraint, the failure of the delicate balance could lead to
qualitatively w... | [
{
"created": "Wed, 13 Oct 2004 21:40:48 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Berger",
"Beverly K.",
""
]
] | The indefinite sign of the Hamiltonian constraint means that solutions to Einstein's equations must achieve a delicate balance--often among numerically large terms that nearly cancel. If numerical errors cause a violation of the Hamiltonian constraint, the failure of the delicate balance could lead to qualitatively wro... |
1502.05735 | Edward Porter | Edward K. Porter and Neil J. Cornish | Fisher vs. Bayes : A comparison of parameter estimation techniques for
massive black hole binaries to high redshifts with eLISA | 15 pages | null | 10.1103/PhysRevD.91.104001 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Massive black hole binaries are the primary source of gravitational waves
(GW) for the future eLISA observatory. The detection and parameter estimation
of these sources to high redshift would provide invaluable information on the
formation mechanisms of seed black holes, and on the evolution of massive black
holes an... | [
{
"created": "Thu, 19 Feb 2015 21:54:49 GMT",
"version": "v1"
}
] | 2015-05-27 | [
[
"Porter",
"Edward K.",
""
],
[
"Cornish",
"Neil J.",
""
]
] | Massive black hole binaries are the primary source of gravitational waves (GW) for the future eLISA observatory. The detection and parameter estimation of these sources to high redshift would provide invaluable information on the formation mechanisms of seed black holes, and on the evolution of massive black holes and ... |
1406.1591 | Soon-Tae Hong | Soon-Tae Hong | Interior properties of five-dimensional Schwarzschild black hole | 6 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate inner structure of Schwarzschild black hole on a
five-dimensional spacetime S^3xR^2. To do this, we exploit a f\"unfbein scheme.
In particular, we construct an equation of state of hydrostatic equilibrium for
the five-dimensional Schwarzschild black hole, which is a five-dimensional
version of the Tolm... | [
{
"created": "Fri, 6 Jun 2014 06:09:08 GMT",
"version": "v1"
}
] | 2014-06-09 | [
[
"Hong",
"Soon-Tae",
""
]
] | We investigate inner structure of Schwarzschild black hole on a five-dimensional spacetime S^3xR^2. To do this, we exploit a f\"unfbein scheme. In particular, we construct an equation of state of hydrostatic equilibrium for the five-dimensional Schwarzschild black hole, which is a five-dimensional version of the Tolman... |
1401.6976 | Graham Cox | Amir Babak Aazami, Graham Cox | Blowup solutions of Jang's equation near a spacetime singularity | 18 pages, 1 figure; second version has expanded Introduction, and new
description of blowup solutions in Section 4 | Class. Quantum Grav. 31 (2014) | 10.1088/0264-9381/31/11/115007 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study Jang's equation on a one-parameter family of asymptotically flat,
spherically symmetric Cauchy hypersurfaces in the maximally extended
Schwarzschild spacetime. The hypersurfaces contain apparent horizons and are
parametrized by their proximity to the singularity at $r = 0$. We show that on
those hypersurface... | [
{
"created": "Mon, 27 Jan 2014 19:33:01 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Oct 2014 18:55:03 GMT",
"version": "v2"
}
] | 2014-10-17 | [
[
"Aazami",
"Amir Babak",
""
],
[
"Cox",
"Graham",
""
]
] | We study Jang's equation on a one-parameter family of asymptotically flat, spherically symmetric Cauchy hypersurfaces in the maximally extended Schwarzschild spacetime. The hypersurfaces contain apparent horizons and are parametrized by their proximity to the singularity at $r = 0$. We show that on those hypersurfaces ... |
0906.4404 | Hamid Reza Sepangi | S. Jalalzadeh, M. Mehrnia and H. R. Sepangi | Classical tests in brane gravity | 10 pages, no figures, to appear in CQG | Class.Quant.Grav.26:155007,2009 | 10.1088/0264-9381/26/15/155007 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The vacuum solutions in brane gravity differ from those in 4D by a number of
additional terms and reduce to the familiar Schwarzschild metric at small
distances. We study the possible roles that such terms may play in the
precession of planetary orbits, bending of light, radar retardation and the
anomaly in mean moti... | [
{
"created": "Wed, 24 Jun 2009 05:27:03 GMT",
"version": "v1"
}
] | 2009-09-15 | [
[
"Jalalzadeh",
"S.",
""
],
[
"Mehrnia",
"M.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | The vacuum solutions in brane gravity differ from those in 4D by a number of additional terms and reduce to the familiar Schwarzschild metric at small distances. We study the possible roles that such terms may play in the precession of planetary orbits, bending of light, radar retardation and the anomaly in mean motion... |
2405.11840 | Mahnaz Asghari | Mahnaz Asghari and Ahmad Sheykhi | Growth of cosmic perturbations in the modified $f(R,T)$ gravity | 9 pages, 6 figures | null | null | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We explore the generalized $f(R,T)$ modified theory of gravity, where the
gravitational Lagrangian is a function of Ricci scalar $R$ and the trace of the
energy-momentum tensor $T$. We derive modified field equations to the linear
order of perturbations in the context of $f(R,T)$ model. We then investigate
the growth... | [
{
"created": "Mon, 20 May 2024 07:33:07 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Jul 2024 15:00:20 GMT",
"version": "v2"
}
] | 2024-07-16 | [
[
"Asghari",
"Mahnaz",
""
],
[
"Sheykhi",
"Ahmad",
""
]
] | We explore the generalized $f(R,T)$ modified theory of gravity, where the gravitational Lagrangian is a function of Ricci scalar $R$ and the trace of the energy-momentum tensor $T$. We derive modified field equations to the linear order of perturbations in the context of $f(R,T)$ model. We then investigate the growth o... |
1106.1922 | Motoyuki Saijo | Motoyuki Saijo | Dynamic black holes through gravitational collapse: Analysis of
multipole moment of the curvatures on the horizon | 13 pages with 19 figures, revtex4-1.cls. Accepted for publication in
the Physical Review D | Phys.Rev.D83:124031,2011 | 10.1103/PhysRevD.83.124031 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have investigated several properties of rapidly rotating dynamic black
holes generated by gravitational collapse of rotating relativistic stars. At
present, numerical simulations of the binary black hole merger are able to
produce a Kerr black hole of J_final / M_final^2 up to = 0.91, of gravitational
collapse fro... | [
{
"created": "Thu, 9 Jun 2011 21:47:44 GMT",
"version": "v1"
}
] | 2011-06-23 | [
[
"Saijo",
"Motoyuki",
""
]
] | We have investigated several properties of rapidly rotating dynamic black holes generated by gravitational collapse of rotating relativistic stars. At present, numerical simulations of the binary black hole merger are able to produce a Kerr black hole of J_final / M_final^2 up to = 0.91, of gravitational collapse from ... |
1703.00193 | Jamir Marino Dr | Gabriel Menezes, Claus Kiefer, Jamir Marino | Thermal and nonthermal scaling of the Casimir-Polder interaction in a
black hole spacetime | 16 pages, 1 figure | Phys. Rev. D 95, 085014 (2017) | 10.1103/PhysRevD.95.085014 | null | gr-qc cond-mat.other quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Casimir-Polder force arising between two identical two-level
atoms and mediated by a massless scalar field propagating in a black-hole
background. We study the interplay of Hawking radiation and Casimir-Polder
forces and find that, when the atoms are placed near the event horizon, the
scaling of the Casi... | [
{
"created": "Wed, 1 Mar 2017 09:31:38 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Apr 2017 07:12:51 GMT",
"version": "v2"
}
] | 2017-04-21 | [
[
"Menezes",
"Gabriel",
""
],
[
"Kiefer",
"Claus",
""
],
[
"Marino",
"Jamir",
""
]
] | We study the Casimir-Polder force arising between two identical two-level atoms and mediated by a massless scalar field propagating in a black-hole background. We study the interplay of Hawking radiation and Casimir-Polder forces and find that, when the atoms are placed near the event horizon, the scaling of the Casimi... |
2402.07828 | F Shojai | A. Sadeghi, F. Shojai and F. Bahmani | Surface gravity in spherically symmetric collapsing stars | 13 pages, 2 figures, accepted for publication in EPJC | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Here we consider the generalized Oppenheimer-Snyder collapse of a star into a
four-dimensional Einstein-Gauss-Bonnet black hole as well as a class of regular
black holes labeled by the polytropic index of the stellar matter. We then
analyze the nature of the horizon and the corresponding surface gravity outside
and i... | [
{
"created": "Mon, 12 Feb 2024 17:34:17 GMT",
"version": "v1"
}
] | 2024-02-13 | [
[
"Sadeghi",
"A.",
""
],
[
"Shojai",
"F.",
""
],
[
"Bahmani",
"F.",
""
]
] | Here we consider the generalized Oppenheimer-Snyder collapse of a star into a four-dimensional Einstein-Gauss-Bonnet black hole as well as a class of regular black holes labeled by the polytropic index of the stellar matter. We then analyze the nature of the horizon and the corresponding surface gravity outside and ins... |
gr-qc/9611026 | Madore | J. Madore | Classical Gravity on Fuzzy Space-Time | Lecture given at the 30th International Symposium Ahrenshoop on the
Theory of Elementary Particles, Buckow, Germany, August 27-31, 1996; 11 Pages
LaTex | Nucl.Phys.Proc.Suppl. 56B (1997) 183-190 | 10.1016/S0920-5632(97)00325-3 | null | gr-qc hep-th | null | A review is made of recent efforts to find relations between the commutation
relations which define a noncommutative geometry and the gravitational field
which remains as a shadow in the commutative limit.
| [
{
"created": "Mon, 11 Nov 1996 11:11:33 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Madore",
"J.",
""
]
] | A review is made of recent efforts to find relations between the commutation relations which define a noncommutative geometry and the gravitational field which remains as a shadow in the commutative limit. |
1306.6719 | Ming-Lei Tong | Ming-Lei Tong, Bao-Rong Yan, Cheng-Shi Zhao, Dong-Shan Yin, Shu-Hong
Zhao, Ting-Gao Yang, Yu-Ping Gao | Pulsar Timing Residuals Induced by Gravitational Waves from Single
Non-evolving Supermassive Black Hole Binaries with Elliptical Orbits | 3 figures, 1 table, 7 pages, Match with the publication version and
the Erratum: Chin. Phys. Lett. 30, 119901, 2013 | Chin. Phys. Lett. 30, 100402, 2013 | 10.1088/0256-307X/30/10/100402 | NTSC/03 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The pulsar timing residuals induced by gravitational waves from non-evolving
single binary sources with general elliptical orbits will be analyzed. For
different orbital eccentricities, the timing residuals present different
properties. The standard deviations of the timing residuals induced by a fixed
gravitational ... | [
{
"created": "Fri, 28 Jun 2013 05:26:05 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Nov 2013 03:22:43 GMT",
"version": "v2"
}
] | 2015-06-16 | [
[
"Tong",
"Ming-Lei",
""
],
[
"Yan",
"Bao-Rong",
""
],
[
"Zhao",
"Cheng-Shi",
""
],
[
"Yin",
"Dong-Shan",
""
],
[
"Zhao",
"Shu-Hong",
""
],
[
"Yang",
"Ting-Gao",
""
],
[
"Gao",
"Yu-Ping",
""
]
] | The pulsar timing residuals induced by gravitational waves from non-evolving single binary sources with general elliptical orbits will be analyzed. For different orbital eccentricities, the timing residuals present different properties. The standard deviations of the timing residuals induced by a fixed gravitational wa... |
1502.02011 | Enrico Pajer | Liang Dai, Enrico Pajer and Fabian Schmidt | Conformal Fermi Coordinates | 43 pages, two figures. v2: minor changes, added references, expanded
subsec 3.3 | null | 10.1088/1475-7516/2015/11/043 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Fermi Normal Coordinates (FNC) are a useful frame for isolating the locally
observable, physical effects of a long-wavelength spacetime perturbation. Their
cosmological application, however, is hampered by the fact that they are only
valid on scales much smaller than the horizon. We introduce a generalization
that we... | [
{
"created": "Fri, 6 Feb 2015 20:08:57 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Apr 2015 12:38:05 GMT",
"version": "v2"
}
] | 2015-12-02 | [
[
"Dai",
"Liang",
""
],
[
"Pajer",
"Enrico",
""
],
[
"Schmidt",
"Fabian",
""
]
] | Fermi Normal Coordinates (FNC) are a useful frame for isolating the locally observable, physical effects of a long-wavelength spacetime perturbation. Their cosmological application, however, is hampered by the fact that they are only valid on scales much smaller than the horizon. We introduce a generalization that we c... |
2207.14611 | Jose M. Isidro | P. Fernandez de Cordoba, R. Gallego Torrome, S. Gavasso and J.M.
Isidro | On the cosmological constant as a quantum operator | 7 pages | null | null | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We regard the cosmological fluid within an exponentially expanding FLRW
spacetime as the probability fluid of a nonrelativistic Schroedinger field. The
scalar Schroedinger particle so described has a mass equal to the total
(baryonic plus dark) matter content of the Universe. This procedure allows a
description of th... | [
{
"created": "Fri, 29 Jul 2022 11:08:42 GMT",
"version": "v1"
}
] | 2022-08-01 | [
[
"de Cordoba",
"P. Fernandez",
""
],
[
"Torrome",
"R. Gallego",
""
],
[
"Gavasso",
"S.",
""
],
[
"Isidro",
"J. M.",
""
]
] | We regard the cosmological fluid within an exponentially expanding FLRW spacetime as the probability fluid of a nonrelativistic Schroedinger field. The scalar Schroedinger particle so described has a mass equal to the total (baryonic plus dark) matter content of the Universe. This procedure allows a description of the ... |
gr-qc/9710012 | Francis Vendrell | F. Vendrell | Some exact results on the CGHS black-hole radiation | 29 pages, Latex, 1 figure | Helv.Phys.Acta 71 (1998) 314-342 | null | Imperial/TP/97-98/1 | gr-qc | null | Theorems on the emission of massless scalar particles by the CGHS black hole
are presented. The convergence of the mean number of particles created
spontaneously in an arbitrary state is studied and shown to be strongly
dependent on the infrared behavior of this state. A bound for this quantity is
given and its asymp... | [
{
"created": "Thu, 2 Oct 1997 14:16:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Vendrell",
"F.",
""
]
] | Theorems on the emission of massless scalar particles by the CGHS black hole are presented. The convergence of the mean number of particles created spontaneously in an arbitrary state is studied and shown to be strongly dependent on the infrared behavior of this state. A bound for this quantity is given and its asympto... |
0902.0573 | Leor Barack | Leor Barack and Norichika Sago | Gravitational self-force correction to the innermost stable circular
orbit of a Schwarzschild black hole | 4 pages. v2: Added clarifications re. the definition of the
conservative self-force and the gauge dependence of the frequency; some other
minor changes. Accepted for publication in PRL | Phys.Rev.Lett.102:191101,2009 | 10.1103/PhysRevLett.102.191101 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The innermost stable circular orbit (ISCO) of a test particle around a
Schwarzschild black hole of mass $M$ has (areal) radius $r_{\rm isco}= 6M
G/c^2$. If the particle is endowed with mass $\mu(\ll M)$, it experiences a
gravitational self-force whose conservative piece alters the location of the
ISCO. Here we calcul... | [
{
"created": "Tue, 3 Feb 2009 18:10:58 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Apr 2009 12:42:51 GMT",
"version": "v2"
}
] | 2009-06-30 | [
[
"Barack",
"Leor",
""
],
[
"Sago",
"Norichika",
""
]
] | The innermost stable circular orbit (ISCO) of a test particle around a Schwarzschild black hole of mass $M$ has (areal) radius $r_{\rm isco}= 6M G/c^2$. If the particle is endowed with mass $\mu(\ll M)$, it experiences a gravitational self-force whose conservative piece alters the location of the ISCO. Here we calculat... |
2204.02098 | Orlando Luongo | Rocco D'Agostino, Roberto Giamb\`o, Orlando Luongo | Constraining primordial black holes as a fraction of dark matter through
accretion disk luminosity | 10 pages, 6 figures, Accepted for publication in Phys. Rev. D | null | 10.1103/PhysRevD.107.043032 | null | gr-qc astro-ph.CO astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we consider the hypothesis that fractions of dark matter could
be constituted by primordial black holes (PBHs). To test this possibility, we
work out the observational properties of a static black hole embedded in the
dark matter envelope made of a PBH source. The corresponding modifications of
geometr... | [
{
"created": "Tue, 5 Apr 2022 10:35:10 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Feb 2023 10:19:14 GMT",
"version": "v2"
}
] | 2023-03-08 | [
[
"D'Agostino",
"Rocco",
""
],
[
"Giambò",
"Roberto",
""
],
[
"Luongo",
"Orlando",
""
]
] | In this paper, we consider the hypothesis that fractions of dark matter could be constituted by primordial black holes (PBHs). To test this possibility, we work out the observational properties of a static black hole embedded in the dark matter envelope made of a PBH source. The corresponding modifications of geometry ... |
2207.13182 | Qasem Exirifard | Qasem Exirifard, Ebrahim Karimi | Trajectory of a massive localised wave function in a curved spacetime
geometry | 17 pages, 4 figures, matches the published version | Phys. Rev. D 107, 064059 (2023) | 10.1103/PhysRevD.107.064059 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Propagation of a localised wave function of a massive scalar field is
investigated in its rest frame. The complete orthogonal Hermite-Gauss basis is
presented, and the Gouy phase and Rayleigh scale notions are adapted. The
leading and sub-leading gravitational corrections to a localised quantum wave
function propagat... | [
{
"created": "Tue, 26 Jul 2022 21:10:38 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Mar 2023 21:33:08 GMT",
"version": "v2"
}
] | 2023-03-30 | [
[
"Exirifard",
"Qasem",
""
],
[
"Karimi",
"Ebrahim",
""
]
] | Propagation of a localised wave function of a massive scalar field is investigated in its rest frame. The complete orthogonal Hermite-Gauss basis is presented, and the Gouy phase and Rayleigh scale notions are adapted. The leading and sub-leading gravitational corrections to a localised quantum wave function propagatin... |
1310.0410 | Gines Perez Teruel | Gin\'es R. P\'erez Teruel | Analytic solution of the algebraic equation associated to the Ricci
tensor in extended Palatini gravity | arXiv admin note: text overlap with arXiv:1101.3864, arXiv:1306.6537,
arXiv:1112.2223 by other authors | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we discuss the exact solution to the algebraic equation
associated to the Ricci tensor in the quadratic $f(R,Q)$ extension of Palatini
gravity. We show that an exact solution always exists, and in the general case
it can be found by a simple matrix diagonalization. Furthermore, the general
implications o... | [
{
"created": "Tue, 1 Oct 2013 17:46:48 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Oct 2013 13:03:36 GMT",
"version": "v2"
},
{
"created": "Mon, 4 Nov 2013 13:05:41 GMT",
"version": "v3"
},
{
"created": "Wed, 16 Jul 2014 23:45:05 GMT",
"version": "v4"
}
] | 2014-07-18 | [
[
"Teruel",
"Ginés R. Pérez",
""
]
] | In this work we discuss the exact solution to the algebraic equation associated to the Ricci tensor in the quadratic $f(R,Q)$ extension of Palatini gravity. We show that an exact solution always exists, and in the general case it can be found by a simple matrix diagonalization. Furthermore, the general implications of ... |
1509.06995 | Iver Brevik | I. Brevik and A. V. Timoshkin | Viscous Coupled Fluids in Inflationary Cosmology | 7 pages latex, no figures. To appear in JETP | JETP Vol. 122 (4) (2016), pp. 679-684 | 10.1134/S1063776116020023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the inflation produced by two coupled fluids in the flat
Friedmann-Robertson-Walker universe. Different cosmological models for
describing inflation by use of an inhomogeneous equation of state for the fluid
are investigated. The gravitational equations for energy and matter are solved,
and analytic repre... | [
{
"created": "Wed, 23 Sep 2015 14:13:27 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Jan 2016 10:57:45 GMT",
"version": "v2"
},
{
"created": "Sat, 30 Jan 2016 15:44:16 GMT",
"version": "v3"
}
] | 2016-05-12 | [
[
"Brevik",
"I.",
""
],
[
"Timoshkin",
"A. V.",
""
]
] | We consider the inflation produced by two coupled fluids in the flat Friedmann-Robertson-Walker universe. Different cosmological models for describing inflation by use of an inhomogeneous equation of state for the fluid are investigated. The gravitational equations for energy and matter are solved, and analytic represe... |
1310.0421 | Sunil Maharaj | S Moopanar, S. D. Maharaj | Relativistic shear-free fluids with symmetry | 9 pages, To appear in J. Eng. Math. (Special issue on the
tercentenary of the Laplace-Runge-Lenz vector) | J. Eng. Math. 82: 125-131, 2013 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the complete conformal geometry of shear-free spacetimes with
spherical symmetry and do not specify the form of the matter content. The
general conformal Killing symmetry is solved and we can explicitly exhibit the
vector. The existence of a conformal symmetry places restrictions on the model.
The conditions... | [
{
"created": "Tue, 1 Oct 2013 18:38:29 GMT",
"version": "v1"
}
] | 2013-10-02 | [
[
"Moopanar",
"S",
""
],
[
"Maharaj",
"S. D.",
""
]
] | We study the complete conformal geometry of shear-free spacetimes with spherical symmetry and do not specify the form of the matter content. The general conformal Killing symmetry is solved and we can explicitly exhibit the vector. The existence of a conformal symmetry places restrictions on the model. The conditions o... |
2206.01322 | Jansen Formiga | J. B. Formiga and V. R. Gon\c{c}alves | The generalization of the ADM gravitational energy-momentum | 21 pages | null | 10.1103/PhysRevD.106.044021 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, it is proved that the teleparallel energy-momentum generalizes
that of the ADM formalism. In doing so, it is shown that the teleparallel
$4$-momentum can be made to coincide with that of the ADM approach whenever the
ADM $4$-momentum is applicable. The only assumptions are the time gauge for the
telepa... | [
{
"created": "Thu, 2 Jun 2022 22:24:18 GMT",
"version": "v1"
}
] | 2022-08-31 | [
[
"Formiga",
"J. B.",
""
],
[
"Gonçalves",
"V. R.",
""
]
] | In this paper, it is proved that the teleparallel energy-momentum generalizes that of the ADM formalism. In doing so, it is shown that the teleparallel $4$-momentum can be made to coincide with that of the ADM approach whenever the ADM $4$-momentum is applicable. The only assumptions are the time gauge for the telepara... |
gr-qc/0608105 | Lorenzo Iorio | Lorenzo Iorio | The Lense-Thirring effect and the Pioneer anomaly: Solar System tests | WS LaTex macros for proceedings, 3 pages, no figures, no tables, 31
references. Paper submitted to the Eleventh Marcel Grossmann Meeting on
General Relativity, 23-29 July, Freie Universitaet Berlin, 2006. Abridged
version to meet page limits. Some changes in the Lense-Thirrings section
including the new results... | Proceedings of the MG11 Meeting on General Relativity, ed. H.
Kleinert, R.T. Jantzen, R. Ruffini, World Scientific, Singapore, pp.
2558-2560, 2008 | 10.1142/9789812834300_0458 | null | gr-qc astro-ph hep-ph physics.geo-ph physics.space-ph | null | We report on a \lessim 1% test of the Lense-Thirring effect with the Mars
Global Surveyor (MGS) spacecraft and on certain features of motion of Uranus,
Neptune and Pluto which contradict the hypothesis that the Pioneer anomaly can
be caused by some gravitational mechanism.
| [
{
"created": "Wed, 23 Aug 2006 09:38:51 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Sep 2006 22:13:14 GMT",
"version": "v2"
},
{
"created": "Tue, 9 Jan 2007 22:44:26 GMT",
"version": "v3"
},
{
"created": "Sat, 3 Feb 2007 00:19:36 GMT",
"version": "v4"
}
] | 2012-07-31 | [
[
"Iorio",
"Lorenzo",
""
]
] | We report on a \lessim 1% test of the Lense-Thirring effect with the Mars Global Surveyor (MGS) spacecraft and on certain features of motion of Uranus, Neptune and Pluto which contradict the hypothesis that the Pioneer anomaly can be caused by some gravitational mechanism. |
gr-qc/9412034 | null | Pedro F. Gonzalez-Diaz | Time Walk Through the Quantum Cosmic String | 26 pages, 6 figures (available upon request) | null | null | IMAFF-RC-07-94 | gr-qc | null | Enforcing the spacetime of supermassive cosmic strings to satisfy the
symmetry of a gravitational topological defect, that is a spacetime kink, it is
shown that the energy of these strings becomes quantized so that only defects
whose internal geometry is that of a hemisphere (critical string) and that of a
sphere (ex... | [
{
"created": "Mon, 12 Dec 1994 15:04:35 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"Gonzalez-Diaz",
"Pedro F.",
""
]
] | Enforcing the spacetime of supermassive cosmic strings to satisfy the symmetry of a gravitational topological defect, that is a spacetime kink, it is shown that the energy of these strings becomes quantized so that only defects whose internal geometry is that of a hemisphere (critical string) and that of a sphere (extr... |
0804.3742 | Diego Meschini | Diego Meschini | A metageometric enquiry concerning time, space, and quantum physics | Ph.D. thesis, 285 pages, LaTeX. Precompiled PDF (3.86 Mb) available
at http://urn.fi/URN:ISBN:978-951-39-3192-6 | null | null | 1/2008, Department of Physics, University of Jyv\"askyl\"a, Finland | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An enquiry into the physical nature of time and space and into the ontology
of quantum mechanics from a metageometric perspective, resulting from the
belief that geometric thought and language are powerless to farther
understanding of these issues, restricting instead physical progress.
The nature and assumptions o... | [
{
"created": "Wed, 23 Apr 2008 15:01:39 GMT",
"version": "v1"
}
] | 2008-04-24 | [
[
"Meschini",
"Diego",
""
]
] | An enquiry into the physical nature of time and space and into the ontology of quantum mechanics from a metageometric perspective, resulting from the belief that geometric thought and language are powerless to farther understanding of these issues, restricting instead physical progress. The nature and assumptions of qu... |
2110.09967 | Tao Yang | Tao Yang, Hyung Mok Lee, Rong-Gen Cai, Han Gil Choi, Sunghoon Jung | Space-borne atom interferometric gravitational wave detections. Part II.
Dark sirens and finding the one | 16 pages, 6 figures, and 1 table. To match the published version | JCAP01(2022)042 | 10.1088/1475-7516/2022/01/042 | null | gr-qc astro-ph.CO astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the potential of dark sirens by the space-borne
atom interferometric gravitational-wave detectors to probe the Hubble constant.
In the mid-frequency band, the sources live a long time. The motion of a
detector around the Sun as well as in Earth orbit would induce large Doppler
and reorie... | [
{
"created": "Tue, 19 Oct 2021 13:29:37 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Jan 2022 03:05:13 GMT",
"version": "v2"
}
] | 2022-01-24 | [
[
"Yang",
"Tao",
""
],
[
"Lee",
"Hyung Mok",
""
],
[
"Cai",
"Rong-Gen",
""
],
[
"Choi",
"Han Gil",
""
],
[
"Jung",
"Sunghoon",
""
]
] | In this paper, we investigate the potential of dark sirens by the space-borne atom interferometric gravitational-wave detectors to probe the Hubble constant. In the mid-frequency band, the sources live a long time. The motion of a detector around the Sun as well as in Earth orbit would induce large Doppler and reorient... |
gr-qc/0002055 | Kip S. Thorne | Yuk Tung Liu and Kip S. Thorne (Theoretical Astrophysics, California
Institute of Technology, Pasadena, California) | Thermoelastic Noise and Homogeneous Thermal Noise in Finite Sized
Gravitational-Wave Test Masses | 10 pages and 3 figures; RevTeX; submitted to Physical Review D | Phys.Rev. D62 (2000) 122002 | 10.1103/PhysRevD.62.122002 | null | gr-qc cond-mat.mtrl-sci | null | An analysis is given of thermoelastic noise (thermal noise due to
thermoelastic dissipation) in finite sized test masses of laser interferometer
gravitational-wave detectors. Finite-size effects increase the thermoelastic
noise by a modest amount; for example, for the sapphire test masses tentatively
planned for LIGO... | [
{
"created": "Wed, 16 Feb 2000 05:00:57 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Liu",
"Yuk Tung",
"",
"Theoretical Astrophysics, California\n Institute of Technology, Pasadena, California"
],
[
"Thorne",
"Kip S.",
"",
"Theoretical Astrophysics, California\n Institute of Technology, Pasadena, California"
]
] | An analysis is given of thermoelastic noise (thermal noise due to thermoelastic dissipation) in finite sized test masses of laser interferometer gravitational-wave detectors. Finite-size effects increase the thermoelastic noise by a modest amount; for example, for the sapphire test masses tentatively planned for LIGO-I... |
gr-qc/0004007 | Valerio Faraoni | Valerio Faraoni (Universite' Libre de Bruxelles) | Generalized slow-roll inflation | 14 pages, LaTeX, some typos corrected | Phys.Lett.A269:209-213,2000 | 10.1016/S0375-9601(00)00257-7 | null | gr-qc astro-ph hep-th | null | The slow-roll approximation to inflation is ultimately justified by the
presence of inflationary attractors for the orbits of the solutions of the
dynamical equations in phase space. There are many indications that the
inflaton field couples nonminimally to the spacetime curvature: the existence
of attractor points f... | [
{
"created": "Mon, 3 Apr 2000 16:21:43 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Apr 2000 08:24:32 GMT",
"version": "v2"
}
] | 2011-08-11 | [
[
"Faraoni",
"Valerio",
"",
"Universite' Libre de Bruxelles"
]
] | The slow-roll approximation to inflation is ultimately justified by the presence of inflationary attractors for the orbits of the solutions of the dynamical equations in phase space. There are many indications that the inflaton field couples nonminimally to the spacetime curvature: the existence of attractor points for... |
gr-qc/9708002 | Robert Marsa | R. Gomez, R. L. Marsa, J. Winicour | Black hole excision with matching | 11 pages, LaTeX, 6 figures, to appear in Phys. Rev. D | Phys.Rev. D56 (1997) 6310-6319 | 10.1103/PhysRevD.56.6310 | null | gr-qc | null | We present a new method for treating the inner Cauchy boundary of a black
hole spacetime by matching to a characteristic evolution. We discuss the
advantages and disadvantages of such a scheme relative to Cauchy-only
approaches. A prototype code, for the spherically symmetric collapse of a
self-gravitating scalar fie... | [
{
"created": "Fri, 1 Aug 1997 15:20:52 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Gomez",
"R.",
""
],
[
"Marsa",
"R. L.",
""
],
[
"Winicour",
"J.",
""
]
] | We present a new method for treating the inner Cauchy boundary of a black hole spacetime by matching to a characteristic evolution. We discuss the advantages and disadvantages of such a scheme relative to Cauchy-only approaches. A prototype code, for the spherically symmetric collapse of a self-gravitating scalar field... |
gr-qc/0006021 | D. V. Ahluwalia | G. Z. Adunas, E. Rodriguez-Milla, D. V. Ahluwalia | Probing Quantum Aspects of Gravity | Phys. Lett. B (in press). S. Sarkar's name was inadvertently missed
from the list of authors for "Nature 393 (1998) 763-765." This has been now
corrected | Phys.Lett.B485:215-223,2000 | 10.1016/S0370-2693(00)00697-3 | EdeFuAZ/ISGBG-05 | gr-qc astro-ph hep-ph hep-th quant-ph | null | We emphasize that a specific aspect of quantum gravity is the absence of a
super-selection rule that prevents a linear superposition of different
gravitational charges. As an immediate consequence, we obtain a tiny, but
observable, violation of the equivalence principle, provided, inertial and
gravitational masses ar... | [
{
"created": "Tue, 6 Jun 2000 19:10:40 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Jul 2000 19:49:38 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Adunas",
"G. Z.",
""
],
[
"Rodriguez-Milla",
"E.",
""
],
[
"Ahluwalia",
"D. V.",
""
]
] | We emphasize that a specific aspect of quantum gravity is the absence of a super-selection rule that prevents a linear superposition of different gravitational charges. As an immediate consequence, we obtain a tiny, but observable, violation of the equivalence principle, provided, inertial and gravitational masses are ... |
2205.06023 | Tatsuya Narikawa | Tatsuya Narikawa and Nami Uchikata | Follow-up analyses of the binary-neutron-star signals GW170817 and
GW190425 by using post-Newtonian waveform models | 18 pages, 9 figures, Accepted for publication in Physical Review D | Phys. Rev. D 106, 103006 (2022) | 10.1103/PhysRevD.106.103006 | LIGO-P2200066 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reanalyze the binary-neutron-star signals, GW170817 and GW190425, focusing
on the inspiral regime to avoid uncertainties on waveform modeling in the
postinspiral regime. We use post-Newtonian waveform models as templates, which
are theoretically rigid and efficiently describe the inspiral regime. We study
potentia... | [
{
"created": "Thu, 12 May 2022 11:11:20 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Oct 2022 05:08:08 GMT",
"version": "v2"
}
] | 2022-11-08 | [
[
"Narikawa",
"Tatsuya",
""
],
[
"Uchikata",
"Nami",
""
]
] | We reanalyze the binary-neutron-star signals, GW170817 and GW190425, focusing on the inspiral regime to avoid uncertainties on waveform modeling in the postinspiral regime. We use post-Newtonian waveform models as templates, which are theoretically rigid and efficiently describe the inspiral regime. We study potential ... |
0812.2138 | Prado Martin-Moruno | S. Capozziello, P. Martin-Moruno and C. Rubano | Exact $f(R)$-cosmological model coming from the request of the existence
of a Noether symmetry | 4 pages, 2 figures, Contribution to the proceedings of Spanish
Relativity Meeting 2008, Salamanca, Sapin, 15-19 September 2008 | AIP Conf.Proc.1122:213-216,2009 | 10.1063/1.3141262 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an $f(R)$-cosmological model with an exact analytic solution,
coming from the request of the existence of a Noether symmetry, which is able
to describe a dust-dominated decelerated phase before the current accelerated
phase of the universe.
| [
{
"created": "Thu, 11 Dec 2008 13:01:44 GMT",
"version": "v1"
}
] | 2009-11-05 | [
[
"Capozziello",
"S.",
""
],
[
"Martin-Moruno",
"P.",
""
],
[
"Rubano",
"C.",
""
]
] | We present an $f(R)$-cosmological model with an exact analytic solution, coming from the request of the existence of a Noether symmetry, which is able to describe a dust-dominated decelerated phase before the current accelerated phase of the universe. |
2403.08957 | Mick Wright | Mick Wright, Justin Janquart, Nathan Johnson-McDaniel | Effect of Deviations from General Relativity on Searches for
Gravitational Wave Microlensing and Type II Strong Lensing | null | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | As the gravitational wave detector network is upgraded and the sensitivity of
the detectors improves, novel scientific avenues open for exploration. For
example, tests of general relativity will become more accurate as smaller
deviations can be probed. Additionally, the detection of lensed gravitational
waves becomes... | [
{
"created": "Wed, 13 Mar 2024 20:52:39 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Mar 2024 17:30:47 GMT",
"version": "v2"
}
] | 2024-03-27 | [
[
"Wright",
"Mick",
""
],
[
"Janquart",
"Justin",
""
],
[
"Johnson-McDaniel",
"Nathan",
""
]
] | As the gravitational wave detector network is upgraded and the sensitivity of the detectors improves, novel scientific avenues open for exploration. For example, tests of general relativity will become more accurate as smaller deviations can be probed. Additionally, the detection of lensed gravitational waves becomes m... |
gr-qc/9211005 | null | M. De Francia, G. Goya, R. C. Mercader and H. Vucetich | M\"o\ss{}bauer null redshift experiment II | LaTeX, 8 pages, 1 figure (included), LAPLATA- | null | null | null | gr-qc | null | Accurate limits for the violation of the Principle of Equivalence have been
found from the comparison of the redshifts of two identical nuclear species in
different chemical environments.
| [
{
"created": "Wed, 4 Nov 1992 14:16:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"De Francia",
"M.",
""
],
[
"Goya",
"G.",
""
],
[
"Mercader",
"R. C.",
""
],
[
"Vucetich",
"H.",
""
]
] | Accurate limits for the violation of the Principle of Equivalence have been found from the comparison of the redshifts of two identical nuclear species in different chemical environments. |
gr-qc/0206011 | Nobuaki Sato | N.Sato, T.Haruyama, N.Kanda, K.Kuroda, S.Miyoki, M.Ohashi, Y.Saito,
T.Shintomi, T.Suzuki, D.Tatsumi, C.Taylor, T.Tomaru, T.Uchiyama, A.Yamamoto | Force measurements of a superconducting-film actuator for a cryogenic
interferometric gravitational-wave detector | 9 pages, 3 figures | Cryogenics 43 (2003) 425-429 | 10.1016/S0011-2275(03)00097-3 | null | gr-qc | null | We measured forces applied by an actuator with a YBCO film at near 77 K for
the Large-scale Cryogenic Gravitational-wave Telescope (LCGT) project. An
actuator consisting of both a YBCO film of 1.6 micrometers thickness and 0.81
square centimeters area and a solenoid coil exerted a force of up to 0.2 mN on
a test mass... | [
{
"created": "Tue, 4 Jun 2002 06:54:05 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Sato",
"N.",
""
],
[
"Haruyama",
"T.",
""
],
[
"Kanda",
"N.",
""
],
[
"Kuroda",
"K.",
""
],
[
"Miyoki",
"S.",
""
],
[
"Ohashi",
"M.",
""
],
[
"Saito",
"Y.",
""
],
[
"Shintomi",
"T.",
""
]... | We measured forces applied by an actuator with a YBCO film at near 77 K for the Large-scale Cryogenic Gravitational-wave Telescope (LCGT) project. An actuator consisting of both a YBCO film of 1.6 micrometers thickness and 0.81 square centimeters area and a solenoid coil exerted a force of up to 0.2 mN on a test mass. ... |
gr-qc/9705084 | Martin Rainer | M. Rainer | Regularized Algebraic Nets for General Covariant QFT on Differentiable
Manifolds | 13 pages, LaTeX, rejected by Class. Quant. Grav., revised | null | null | Uni-P-Math/96-17 | gr-qc | null | Quantum general relativity may be considered as generally covariant QFT on
differentiable manifolds, without any a priori metric structure. The
kinematically covariance group acts by general diffeomorphisms on the manifold
and by automorphisms on the isotonic net of *-algebras encoding the QFT, while
the algebra of o... | [
{
"created": "Fri, 30 May 1997 22:24:18 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rainer",
"M.",
""
]
] | Quantum general relativity may be considered as generally covariant QFT on differentiable manifolds, without any a priori metric structure. The kinematically covariance group acts by general diffeomorphisms on the manifold and by automorphisms on the isotonic net of *-algebras encoding the QFT, while the algebra of obs... |
2312.16838 | Lau Loi So | Lau Loi So | The gravitational energy-momentum for the super-energy Bel-Robinson
tensor | 4 pages | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Describing the gravitational energy-momentum, the super-energy Bel-Robinson
tensor is the best candidate. In the past, people seems only explore the lowest
order: the electric part $E_{ab}$ and magnetic part $B_{ab}$ for the Riemann
tensor. These two components are related with the static case, however, for the
energ... | [
{
"created": "Thu, 28 Dec 2023 05:53:32 GMT",
"version": "v1"
}
] | 2023-12-29 | [
[
"So",
"Lau Loi",
""
]
] | Describing the gravitational energy-momentum, the super-energy Bel-Robinson tensor is the best candidate. In the past, people seems only explore the lowest order: the electric part $E_{ab}$ and magnetic part $B_{ab}$ for the Riemann tensor. These two components are related with the static case, however, for the energy ... |
0806.1707 | Paul Frampton | Paul H. Frampton | High Longevity Microlensing Events and Dark Matter Black Holes | Table clarified | null | null | null | gr-qc astro-ph hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational microlensing has been employed to identify massive halo objects
by their amplification of distant sources; MACHO searches have studied event
times $2 h \lesssim t_0 \lesssim 2 y$ corresponding masses in the range
$10^{-6} M_{\odot} \lesssim M \lesssim 100 M_{\odot}$. We suggest that larger
masses up to ... | [
{
"created": "Tue, 10 Jun 2008 17:05:09 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Aug 2008 00:12:16 GMT",
"version": "v2"
},
{
"created": "Thu, 21 Aug 2008 12:37:52 GMT",
"version": "v3"
},
{
"created": "Sat, 23 Aug 2008 01:20:19 GMT",
"version": "v4"
},
{
"c... | 2008-12-27 | [
[
"Frampton",
"Paul H.",
""
]
] | Gravitational microlensing has been employed to identify massive halo objects by their amplification of distant sources; MACHO searches have studied event times $2 h \lesssim t_0 \lesssim 2 y$ corresponding masses in the range $10^{-6} M_{\odot} \lesssim M \lesssim 100 M_{\odot}$. We suggest that larger masses up to $1... |
2312.09047 | Yu-Cun Xie | Yu-Cun Xie, Jen-Tsung Hsiang, Bei-Lok Hu | Dynamical Vacuum Compressibility of Space | V2: Added representative references to emergent gravity, highlighting
Refs. [43-44] which are closest to the intent of this paper. No alteration of
results or derivations from v1 | Phys. Rev. D 109, 065027 (2024) | 10.1103/PhysRevD.109.065027 | null | gr-qc cond-mat.stat-mech hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | This paper continues the investigation initiated in arXiv:2204.08634 into the
quantum thermodynamic properties of space by deriving the vacuum
compressibility of a variety of dynamical spacetimes containing massive and
massless conformally coupled quantum fields. The quantum processes studied here
include particle cr... | [
{
"created": "Thu, 14 Dec 2023 15:46:53 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Dec 2023 14:37:14 GMT",
"version": "v2"
}
] | 2024-03-29 | [
[
"Xie",
"Yu-Cun",
""
],
[
"Hsiang",
"Jen-Tsung",
""
],
[
"Hu",
"Bei-Lok",
""
]
] | This paper continues the investigation initiated in arXiv:2204.08634 into the quantum thermodynamic properties of space by deriving the vacuum compressibility of a variety of dynamical spacetimes containing massive and massless conformally coupled quantum fields. The quantum processes studied here include particle crea... |
gr-qc/9806048 | Andrew P. Billyard | B. J. Carr, A. A. Coley | Self-Similarity in General Relativity \endtitle | TeX document, 53 pages | Class.Quant.Grav.16:R31-R71,1999 | 10.1088/0264-9381/16/7/201 | QMW-MATHS 32 | gr-qc | null | The different kinds of self-similarity in general relativity are discussed,
with special emphasis on similarity of the ``first'' kind, corresponding to
spacetimes admitting a homothetic vector. We then survey the various classes of
self-similar solutions to Einstein's field equations and the different
mathematical ap... | [
{
"created": "Tue, 9 Jun 1998 15:32:05 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Carr",
"B. J.",
""
],
[
"Coley",
"A. A.",
""
]
] | The different kinds of self-similarity in general relativity are discussed, with special emphasis on similarity of the ``first'' kind, corresponding to spacetimes admitting a homothetic vector. We then survey the various classes of self-similar solutions to Einstein's field equations and the different mathematical appr... |
gr-qc/9709061 | Inigo L. Egusquiza | I.L. Egusquiza, A. Feinstein, M.A. Perez Sebastian and M.A. Valle
Basagoiti | On the Entropy and the Density Matrix of Cosmological Perturbations | LaTeX2e with the epsf package | Class.Quant.Grav.15:1927-1936,1998 | 10.1088/0264-9381/15/7/010 | EHU-FT/9705 | gr-qc | null | We look at the transition to the semiclassical behaviour and the decoherence
process for the inhomogeneous perturbations in the inflationary universe. Two
different decoherence mechanisms appear: one dynamical, accompanied with a
negligible, if at all, entropy gain, and the other, effectively irreversible
dephasing, ... | [
{
"created": "Wed, 24 Sep 1997 14:11:55 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Egusquiza",
"I. L.",
""
],
[
"Feinstein",
"A.",
""
],
[
"Sebastian",
"M. A. Perez",
""
],
[
"Basagoiti",
"M. A. Valle",
""
]
] | We look at the transition to the semiclassical behaviour and the decoherence process for the inhomogeneous perturbations in the inflationary universe. Two different decoherence mechanisms appear: one dynamical, accompanied with a negligible, if at all, entropy gain, and the other, effectively irreversible dephasing, du... |
2010.12549 | Sebastian Szybka | Sebastian J. Szybka and Syed U. Naqvi | Freely falling bodies in a standing-wave spacetime | 23 pages, 8 figures; minor changes to match published version | Phys. Rev. D 103, 024011 (2021) | 10.1103/PhysRevD.103.024011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the motion of free masses subject to the influence of standing
gravitational waves in the polarized Gowdy cosmology with a three-torus
topology. We show that antinodes attract freely falling particles and we trace
the velocity memory effect.
| [
{
"created": "Fri, 23 Oct 2020 17:17:29 GMT",
"version": "v1"
},
{
"created": "Sun, 7 Nov 2021 14:28:11 GMT",
"version": "v2"
}
] | 2021-11-09 | [
[
"Szybka",
"Sebastian J.",
""
],
[
"Naqvi",
"Syed U.",
""
]
] | We study the motion of free masses subject to the influence of standing gravitational waves in the polarized Gowdy cosmology with a three-torus topology. We show that antinodes attract freely falling particles and we trace the velocity memory effect. |
1311.0692 | Naqing Xie | Fei-hung Ho, Jian-liang Liu, and Naqing Xie | Localized Penrose inequality for the Liu-Yau mass in spherical symmetry | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For an asymptotically flat initial data, the Penrose inequality gives a lower
bound of the Arnowitt-Deser-Misner total mass of a spacetime in terms of the
area of certain surfaces representing black holes. This is a deep and beautiful
refinement of the famous positive mass theorem and it plays an important role
in th... | [
{
"created": "Mon, 4 Nov 2013 13:25:18 GMT",
"version": "v1"
}
] | 2013-11-05 | [
[
"Ho",
"Fei-hung",
""
],
[
"Liu",
"Jian-liang",
""
],
[
"Xie",
"Naqing",
""
]
] | For an asymptotically flat initial data, the Penrose inequality gives a lower bound of the Arnowitt-Deser-Misner total mass of a spacetime in terms of the area of certain surfaces representing black holes. This is a deep and beautiful refinement of the famous positive mass theorem and it plays an important role in the ... |
0807.5114 | Christian Corda | Christian Corda | On the longitudinal response function of interferometers for massive
gravitational waves from a bimetric theory of gravity | Final version published in Astrophysics and Space Science 0004-640X
(Print) 1572-946X (Online) | Astrophys.Space Sci.317:95-106,2008 | 10.1007/s10509-008-9860-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, some papers in the literature have shown that, from a bimetric
theory of gravity, it is possible to produce massive gravitational waves which
generate a longitudinal component in a particular polarization of the wave.
After a review of previous works, in this paper the longitudinal response
function of inte... | [
{
"created": "Thu, 31 Jul 2008 17:21:31 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Aug 2008 07:39:42 GMT",
"version": "v2"
},
{
"created": "Tue, 26 Aug 2008 07:39:09 GMT",
"version": "v3"
}
] | 2009-03-12 | [
[
"Corda",
"Christian",
""
]
] | Recently, some papers in the literature have shown that, from a bimetric theory of gravity, it is possible to produce massive gravitational waves which generate a longitudinal component in a particular polarization of the wave. After a review of previous works, in this paper the longitudinal response function of interf... |
1512.01450 | Alex Kirillov | A.A. Kirillov, E.P. Savelova | Cosmological wormholes | null | null | 10.1142/S0218271816500759 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe in details the procedure how the Lobachevsky space can be
factorized to a space of the constant negative curvature filled with a gas of
wormholes. We show that such wormholes have throat sections in the form of tori
and are traversable and stable in the cosmological context. The relation of
such wormholes... | [
{
"created": "Thu, 3 Dec 2015 06:46:03 GMT",
"version": "v1"
}
] | 2016-05-10 | [
[
"Kirillov",
"A. A.",
""
],
[
"Savelova",
"E. P.",
""
]
] | We describe in details the procedure how the Lobachevsky space can be factorized to a space of the constant negative curvature filled with a gas of wormholes. We show that such wormholes have throat sections in the form of tori and are traversable and stable in the cosmological context. The relation of such wormholes t... |
2003.10552 | Vincent Desjacques | Vincent Desjacques, Evgeni Grishin, Yonadav Barry Ginat | Axion oscillations in binary systems: angle-action surgery | 15 pages, 5 figures (v2): moderate revision. matches the published
manuscript (v3): references added | null | 10.3847/1538-4357/abaefc | null | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scalar, tensor waves induce oscillatory perturbations in Keplerian systems
that can be probed with measurements of pulsar timing residuals. In this paper,
we consider the imprint of coherent oscillations produced by ultralight axion
dark matter on the Roemer time delay. We use the angle-action formalism to
calculate ... | [
{
"created": "Mon, 23 Mar 2020 21:09:24 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Oct 2020 15:12:18 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Oct 2020 11:00:23 GMT",
"version": "v3"
}
] | 2020-10-14 | [
[
"Desjacques",
"Vincent",
""
],
[
"Grishin",
"Evgeni",
""
],
[
"Ginat",
"Yonadav Barry",
""
]
] | Scalar, tensor waves induce oscillatory perturbations in Keplerian systems that can be probed with measurements of pulsar timing residuals. In this paper, we consider the imprint of coherent oscillations produced by ultralight axion dark matter on the Roemer time delay. We use the angle-action formalism to calculate th... |
2311.15749 | Herondy Mota | E. J. B. Ferreira and H. F. Santana Mota | Quantum Brownian motion induced by a scalar field in Einstein's universe | 16 pages, 2 Figures, 2 Tables. Version accepted for publication in
EPJC | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The Brownian motion of a point particle induced by quantum vacuum
fluctuations of a massless real scalar field in Einstein's universe is studied.
By assuming the small displacement condition, the dispersion in the momentum
and position of a point particle coupled to the massless scalar field are
obtained. As a conseq... | [
{
"created": "Mon, 27 Nov 2023 12:06:39 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Apr 2024 16:05:41 GMT",
"version": "v2"
}
] | 2024-04-09 | [
[
"Ferreira",
"E. J. B.",
""
],
[
"Mota",
"H. F. Santana",
""
]
] | The Brownian motion of a point particle induced by quantum vacuum fluctuations of a massless real scalar field in Einstein's universe is studied. By assuming the small displacement condition, the dispersion in the momentum and position of a point particle coupled to the massless scalar field are obtained. As a conseque... |
1810.07407 | Arvin Ravanpak | Arvin Ravanpak and Golnaz Farpour Fadakar | Stability Analysis of DGP Brane-world Model with Agegraphic Dark Energy | null | Can. J. Phys. 98, 778 (2020) | 10.1139/cjp-2019-0305 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The aim of this work is to apply the dynamical system approach to study the
linear dynamics of the normal DGP brane-world model with agegraphic dark
energy. The stability analysis of the model will be investigated and the phase
plane portrait will be illustrated. The nature of critical points will be
analyzed by eval... | [
{
"created": "Wed, 17 Oct 2018 07:20:22 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Sep 2020 20:23:15 GMT",
"version": "v2"
}
] | 2020-10-07 | [
[
"Ravanpak",
"Arvin",
""
],
[
"Fadakar",
"Golnaz Farpour",
""
]
] | The aim of this work is to apply the dynamical system approach to study the linear dynamics of the normal DGP brane-world model with agegraphic dark energy. The stability analysis of the model will be investigated and the phase plane portrait will be illustrated. The nature of critical points will be analyzed by evalua... |
1711.08706 | Tim-Torben Paetz | Marc Mars, Tim-Torben Paetz, Jos\'e M. M. Senovilla | The limit of Kerr-de Sitter spacetime with infinite angular-momentum
parameter $a$ | 24 pages | Phys. Rev. D 97, 024021 (2018) | 10.1103/PhysRevD.97.024021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the limit $a\rightarrow \infty$ of the Kerr-de Sitter spacetime.
The spacetime is a Petrov type-D solution of the vacuum Einstein field
equations with a positive cosmological constant $\Lambda$, vanishing Mars-Simon
tensor and conformally flat scri. It possesses an Abelian 2-dimensional group
of symmetrie... | [
{
"created": "Thu, 23 Nov 2017 14:28:03 GMT",
"version": "v1"
}
] | 2018-01-24 | [
[
"Mars",
"Marc",
""
],
[
"Paetz",
"Tim-Torben",
""
],
[
"Senovilla",
"José M. M.",
""
]
] | We consider the limit $a\rightarrow \infty$ of the Kerr-de Sitter spacetime. The spacetime is a Petrov type-D solution of the vacuum Einstein field equations with a positive cosmological constant $\Lambda$, vanishing Mars-Simon tensor and conformally flat scri. It possesses an Abelian 2-dimensional group of symmetries ... |
gr-qc/0005008 | Vladimir Dzhunushaliev | V.Dzhunushaliev | Wormhole with Quantum Throat | essential change in the text: title, the goal of the paper is
concentrated on constructing of the wormhole with quantum throat | Grav.Cosmol. 7 (2001) 79-82 | null | null | gr-qc hep-th | null | A wormhole with a quantum throat on the basis of an approximate model of the
spacetime foam is presented. An effective spinor field is introduced for the
description of the spacetime foam. The consequences of such model of the
wormhole is preventing a "naked'' singularity in the Reissner-Nordstr\"om
solution with $|e... | [
{
"created": "Tue, 2 May 2000 11:32:40 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Sep 2000 02:02:23 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Dzhunushaliev",
"V.",
""
]
] | A wormhole with a quantum throat on the basis of an approximate model of the spacetime foam is presented. An effective spinor field is introduced for the description of the spacetime foam. The consequences of such model of the wormhole is preventing a "naked'' singularity in the Reissner-Nordstr\"om solution with $|e|/... |
1803.09783 | Maximiliano Isi | Maximiliano Isi, Rory Smith, Salvatore Vitale, T. J. Massinger, Jonah
Kanner, Avi Vajpeyi | Enhancing confidence in the detection of gravitational waves from
compact binaries using signal coherence | null | Phys. Rev. D 98, 042007 (2018) | 10.1103/PhysRevD.98.042007 | LIGO-P1700414 | gr-qc astro-ph.HE physics.data-an | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that gravitational-wave signals from compact binary mergers may be
better distinguished from instrumental noise transients by using Bayesian
models that look for signal coherence across a detector network. This can be
achieved even when the signal power is below the usual threshold for detection.
This method ... | [
{
"created": "Mon, 26 Mar 2018 18:32:05 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Aug 2018 18:11:08 GMT",
"version": "v2"
}
] | 2018-08-30 | [
[
"Isi",
"Maximiliano",
""
],
[
"Smith",
"Rory",
""
],
[
"Vitale",
"Salvatore",
""
],
[
"Massinger",
"T. J.",
""
],
[
"Kanner",
"Jonah",
""
],
[
"Vajpeyi",
"Avi",
""
]
] | We show that gravitational-wave signals from compact binary mergers may be better distinguished from instrumental noise transients by using Bayesian models that look for signal coherence across a detector network. This can be achieved even when the signal power is below the usual threshold for detection. This method co... |
1901.02227 | Chad Hanna | Chad Hanna, Sarah Caudill, Cody Messick, Amit Reza, Surabhi Sachdev,
Leo Tsukada, Kipp Cannon, Kent Blackburn, Jolien D. E. Creighton, Heather
Fong, Patrick Godwin, Shasvath Kapadia, Tjonnie G. F. Li, Ryan Magee, Duncan
Meacher, Debnandini Mukherjee, Alex Pace, Stephen Privitera, Rico K. L. Lo,
Leslie Wade | Fast evaluation of multi-detector consistency for real-time
gravitational wave searches | null | Phys. Rev. D 101, 022003 (2020) | 10.1103/PhysRevD.101.022003 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves searches for compact binary mergers with LIGO and Virgo
are presently a two stage process. First, a gravitational wave signal is
identified. Then, an exhaustive search over possible signal parameters is
performed. It is critical that the identification stage is efficient in order
to maximize the n... | [
{
"created": "Tue, 8 Jan 2019 10:02:38 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Aug 2019 13:13:46 GMT",
"version": "v2"
}
] | 2020-02-05 | [
[
"Hanna",
"Chad",
""
],
[
"Caudill",
"Sarah",
""
],
[
"Messick",
"Cody",
""
],
[
"Reza",
"Amit",
""
],
[
"Sachdev",
"Surabhi",
""
],
[
"Tsukada",
"Leo",
""
],
[
"Cannon",
"Kipp",
""
],
[
"Blackburn",... | Gravitational waves searches for compact binary mergers with LIGO and Virgo are presently a two stage process. First, a gravitational wave signal is identified. Then, an exhaustive search over possible signal parameters is performed. It is critical that the identification stage is efficient in order to maximize the num... |
1906.00063 | Saibal Ray | Abdul Aziz, Saibal Ray, Farook Rahaman, M. Khlopov and B.K. Guha | Constraining values of bag constant for strange star candidates | 22 pages, 6 figures, 2 tables | International Journal of Modern Physics D, Vol 28 (2019),
ID-1941006 (22) | 10.1142/S0218271819410062 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a strange star model under the framework of general relativity by
using a general linear equation of state (EOS). The solution set thus obtained
is employed on altogether 20 compact star candidates to constraint values of
MIT bag model. No specific value of the bag constant ($B$) a-priori is assumed
rather... | [
{
"created": "Thu, 30 May 2019 07:02:03 GMT",
"version": "v1"
}
] | 2019-06-04 | [
[
"Aziz",
"Abdul",
""
],
[
"Ray",
"Saibal",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Khlopov",
"M.",
""
],
[
"Guha",
"B. K.",
""
]
] | We provide a strange star model under the framework of general relativity by using a general linear equation of state (EOS). The solution set thus obtained is employed on altogether 20 compact star candidates to constraint values of MIT bag model. No specific value of the bag constant ($B$) a-priori is assumed rather p... |
1104.4872 | John F. Donoghue | Thibault Damour and John F. Donoghue | Spatial variation of fundamental couplings and Lunar Laser Ranging | 9 pages | null | 10.1088/0264-9381/28/16/162001 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If the fundamental constants of nature have a cosmic spatial variation, there
will in general be extra forces with a preferred direction in space which
violate the equivalence principle. We show that the millimeter-precision Apache
Point Observatory Lunar Laser-ranging Operation provides a very sensitive probe
of suc... | [
{
"created": "Tue, 26 Apr 2011 09:36:00 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Damour",
"Thibault",
""
],
[
"Donoghue",
"John F.",
""
]
] | If the fundamental constants of nature have a cosmic spatial variation, there will in general be extra forces with a preferred direction in space which violate the equivalence principle. We show that the millimeter-precision Apache Point Observatory Lunar Laser-ranging Operation provides a very sensitive probe of such ... |
0911.5195 | Vladimir Dzhunushaliev | V. Dzhunushaliev, K. Myrzakulov and R. Myrzakulov | Long-term bounce of the Universe filled with the Higgs field | new reference is added | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cosmological solution with a long-term bouncing off time is presented.
The solution has a preceding contracting and a subsequent expanding phases and
between them there exists a bouncing off phase with arbitrary time duration.
| [
{
"created": "Fri, 27 Nov 2009 04:10:22 GMT",
"version": "v1"
},
{
"created": "Sun, 13 Dec 2009 02:56:15 GMT",
"version": "v2"
}
] | 2009-12-13 | [
[
"Dzhunushaliev",
"V.",
""
],
[
"Myrzakulov",
"K.",
""
],
[
"Myrzakulov",
"R.",
""
]
] | The cosmological solution with a long-term bouncing off time is presented. The solution has a preceding contracting and a subsequent expanding phases and between them there exists a bouncing off phase with arbitrary time duration. |
0805.0102 | Atsushi Nishizawa | Atsushi Nishizawa, Seiji Kawamura, Masa-aki Sakagami | Resonant speed meter for gravitational wave detection | 4 pages, 4 figures | Phys.Rev.Lett.101:081101,2008 | 10.1103/PhysRevLett.101.081101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave detectors have been well developed and operated with high
sensitivity. However, they still suffer from mirror displacement noise. In this
paper, we propose a resonant speed meter, as a displacement noise-canceled
configuration based on a ring-shaped synchronous recycling interferometer. The
remarka... | [
{
"created": "Thu, 1 May 2008 14:33:09 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Nishizawa",
"Atsushi",
""
],
[
"Kawamura",
"Seiji",
""
],
[
"Sakagami",
"Masa-aki",
""
]
] | Gravitational-wave detectors have been well developed and operated with high sensitivity. However, they still suffer from mirror displacement noise. In this paper, we propose a resonant speed meter, as a displacement noise-canceled configuration based on a ring-shaped synchronous recycling interferometer. The remarkabl... |
1610.04848 | Adam Levi | Adam Levi, Ehud Eilon, Amos Ori and Maarten van de Meent | Renormalized stress-energy tensor of an evaporating spinning black hole | 5 pages, 4 figures | Phys. Rev. Lett. 118, 141102 (2017) | 10.1103/PhysRevLett.118.141102 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We employ a recently developed mode-sum regularization method to compute the
renormalized stress-energy tensor of a quantum field in the Kerr background
metric (describing a stationary spinning black hole). More specifically, we
consider a minimally-coupled massless scalar field in the Unruh vacuum state,
the quantum... | [
{
"created": "Sun, 16 Oct 2016 12:37:09 GMT",
"version": "v1"
}
] | 2017-04-12 | [
[
"Levi",
"Adam",
""
],
[
"Eilon",
"Ehud",
""
],
[
"Ori",
"Amos",
""
],
[
"van de Meent",
"Maarten",
""
]
] | We employ a recently developed mode-sum regularization method to compute the renormalized stress-energy tensor of a quantum field in the Kerr background metric (describing a stationary spinning black hole). More specifically, we consider a minimally-coupled massless scalar field in the Unruh vacuum state, the quantum s... |
1109.2827 | Matteo Luca Ruggiero | Angelo Tartaglia | The Strained State Cosmology | Book chapter, to apper in "Aspects of Today's Cosmology", ISBN
978-953-307-626-3, edited by Antonio Alfonso-Faus, Intechopen 2011 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The chapter expounds a theory based on the interpretation of the dark energy
as a strain energy of a physical continuum. The theory is based on the analogy
that exists between the properties of space-time and the properties of elastic
materials, when extended to four dimensions and the Lorentzian signature. In
practi... | [
{
"created": "Tue, 13 Sep 2011 15:27:26 GMT",
"version": "v1"
}
] | 2011-09-14 | [
[
"Tartaglia",
"Angelo",
""
]
] | The chapter expounds a theory based on the interpretation of the dark energy as a strain energy of a physical continuum. The theory is based on the analogy that exists between the properties of space-time and the properties of elastic materials, when extended to four dimensions and the Lorentzian signature. In practice... |
0809.1693 | Felix Finster | Felix Finster and Christian Hainzl | Quantum Oscillations Can Prevent the Big Bang Singularity in an
Einstein-Dirac Cosmology | 8 pages, LaTeX, 4 figures, statement on energy conditions corrected | Found.Phys.40:116-124,2010 | 10.1007/s10701-009-9380-z | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a spatially homogeneous and isotropic system of Dirac particles
coupled to classical gravity. The dust and radiation dominated closed
Friedmann-Robertson-Walker space-times are recovered as limiting cases. We find
a mechanism where quantum oscillations of the Dirac wave functions can prevent
the formation... | [
{
"created": "Wed, 10 Sep 2008 00:24:04 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Oct 2009 07:53:21 GMT",
"version": "v2"
},
{
"created": "Wed, 11 Nov 2009 15:52:38 GMT",
"version": "v3"
},
{
"created": "Mon, 10 Jan 2011 16:29:45 GMT",
"version": "v4"
}
] | 2011-07-21 | [
[
"Finster",
"Felix",
""
],
[
"Hainzl",
"Christian",
""
]
] | We consider a spatially homogeneous and isotropic system of Dirac particles coupled to classical gravity. The dust and radiation dominated closed Friedmann-Robertson-Walker space-times are recovered as limiting cases. We find a mechanism where quantum oscillations of the Dirac wave functions can prevent the formation o... |
2109.03254 | Christopher Pope | M. Cvetic, G.W. Gibbons, C.N. Pope and B.F. Whiting | Supergravity Black Holes, Love Numbers and Harmonic Coordinates | 21 pages. Typos correct, text added | null | 10.1103/PhysRevD.105.084035 | UPR-1314-T, MI-HET-761 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | To perform realistic tests of theories of gravity, we need to be able to look
beyond general relativity and evaluate the consistency of alternative theories
with observational data from, especially, gravitational wave detections using,
for example, an agnostic Bayesian approach. In this paper we further examine
prope... | [
{
"created": "Tue, 7 Sep 2021 18:00:04 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Sep 2021 16:07:03 GMT",
"version": "v2"
}
] | 2022-05-04 | [
[
"Cvetic",
"M.",
""
],
[
"Gibbons",
"G. W.",
""
],
[
"Pope",
"C. N.",
""
],
[
"Whiting",
"B. F.",
""
]
] | To perform realistic tests of theories of gravity, we need to be able to look beyond general relativity and evaluate the consistency of alternative theories with observational data from, especially, gravitational wave detections using, for example, an agnostic Bayesian approach. In this paper we further examine propert... |
1903.06742 | Katerina Chatziioannou | Katerina Chatziioannou, Roberto Cotesta, Sudarshan Ghonge, Jacob
Lange, Ken K.-Y. Ng, Juan Calderon Bustillo, James Clark, Carl-Johan Haster,
Sebastian Khan, Michael Puerrer, Vivien Raymond, Salvatore Vitale, Nousha
Afshari, Stanislav Babak, Kevin Barkett, Jonathan Blackman, Alejandro Bohe,
Michael Boyle, Aless... | On the properties of the massive binary black hole merger GW170729 | 14 pages, 8 figures, final published version, samples available at
https://git.ligo.org/katerina.chatziioannou/gw170729hm_datarelease | Phys. Rev. D 100, 104015 (2019) | 10.1103/PhysRevD.100.104015 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a detailed investigation into the properties of GW170729, the
gravitational wave with the most massive and distant source confirmed to date.
We employ an extensive set of waveform models, including new improved models
that incorporate the effect of higher-order waveform modes which are
particularly importa... | [
{
"created": "Fri, 15 Mar 2019 18:42:09 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Mar 2019 12:22:27 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Nov 2019 02:13:25 GMT",
"version": "v3"
}
] | 2019-11-13 | [
[
"Chatziioannou",
"Katerina",
""
],
[
"Cotesta",
"Roberto",
""
],
[
"Ghonge",
"Sudarshan",
""
],
[
"Lange",
"Jacob",
""
],
[
"Ng",
"Ken K. -Y.",
""
],
[
"Bustillo",
"Juan Calderon",
""
],
[
"Clark",
"James",
... | We present a detailed investigation into the properties of GW170729, the gravitational wave with the most massive and distant source confirmed to date. We employ an extensive set of waveform models, including new improved models that incorporate the effect of higher-order waveform modes which are particularly important... |
2212.03042 | Dipanjan Dey | Ashok B. Joshi, Divya Tahelyani, Dipanjan Dey, and Pankaj S. Joshi | Observational aspects of a class of Dark matter spacetimes | 16 pages, 8 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Various astrophysical and cosmological observations today serve as an
indirect evidence of the existence of dark matter in the universe. In the
present work, we propose a class of spacetimes that show some important
characteristics relevant to the spacetime of a dark matter halo. These
spacetimes are static and spher... | [
{
"created": "Tue, 6 Dec 2022 15:18:31 GMT",
"version": "v1"
}
] | 2022-12-07 | [
[
"Joshi",
"Ashok B.",
""
],
[
"Tahelyani",
"Divya",
""
],
[
"Dey",
"Dipanjan",
""
],
[
"Joshi",
"Pankaj S.",
""
]
] | Various astrophysical and cosmological observations today serve as an indirect evidence of the existence of dark matter in the universe. In the present work, we propose a class of spacetimes that show some important characteristics relevant to the spacetime of a dark matter halo. These spacetimes are static and spheric... |
1710.05837 | LSC P&P Committee | The LIGO Scientific Collaboration and the Virgo Collaboration: B. P.
Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams,
P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Afrough, B. Agarwal,
M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P.
Ajith, B. Allen,... | GW170817: Implications for the Stochastic Gravitational-Wave Background
from Compact Binary Coalescences | 12 pages, 3 figures | Phys. Rev. Lett. 120, 091101 (2018) | 10.1103/PhysRevLett.120.091101 | LIGO P1700272 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The LIGO Scientific and Virgo Collaborations have announced the first
detection of gravitational waves from the coalescence of two neutron stars. The
merger rate of binary neutron stars estimated from this event suggests that
distant, unresolvable binary neutron stars create a significant astrophysical
stochastic gra... | [
{
"created": "Mon, 16 Oct 2017 16:57:22 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Sep 2019 22:04:18 GMT",
"version": "v2"
}
] | 2019-10-02 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Acernese",
"F.",
""
],
[
"Ackley",
"K.",
... | The LIGO Scientific and Virgo Collaborations have announced the first detection of gravitational waves from the coalescence of two neutron stars. The merger rate of binary neutron stars estimated from this event suggests that distant, unresolvable binary neutron stars create a significant astrophysical stochastic gravi... |
2105.00736 | Albert Huber | Albert Huber | Hidden Killing Fields, Geometric Symmetries and Black Hole Mergers | 22 pages, 1 figure; section one extended, results unchanged; matches
published version | Ann. Phys. 2021-10 | 10.1016/j.aop.2021.168650 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | In the present work, using the recently introduced framework of local
geometric deformations, special types of vector fields - so-called hidden
Killing vector fields - are constructed, which solve the Killing equation not
globally, but only locally, i.e. in local subregions of spacetime. Taking
advantage of the fact ... | [
{
"created": "Mon, 3 May 2021 10:27:24 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Oct 2021 07:57:54 GMT",
"version": "v2"
}
] | 2021-10-15 | [
[
"Huber",
"Albert",
""
]
] | In the present work, using the recently introduced framework of local geometric deformations, special types of vector fields - so-called hidden Killing vector fields - are constructed, which solve the Killing equation not globally, but only locally, i.e. in local subregions of spacetime. Taking advantage of the fact th... |
gr-qc/9409043 | Matt Visser | Matt Visser | Scale anomalies imply violation of the averaged null energy condition | 6 pages; ReV_TeX 3.0] | Phys.Lett. B349 (1995) 443-447 | 10.1016/0370-2693(95)00303-3 | null | gr-qc hep-th | null | Considerable interest has recently been expressed regarding the issue of
whether or not quantum field theory on a fixed but curved background spacetime
satisfies the averaged null energy condition (ANEC). A comment by Wald and
Yurtsever [Phys. Rev. D43, 403 (1991)] indicates that in general the answer is
no. In this ... | [
{
"created": "Tue, 20 Sep 1994 19:50:35 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Visser",
"Matt",
""
]
] | Considerable interest has recently been expressed regarding the issue of whether or not quantum field theory on a fixed but curved background spacetime satisfies the averaged null energy condition (ANEC). A comment by Wald and Yurtsever [Phys. Rev. D43, 403 (1991)] indicates that in general the answer is no. In this no... |
gr-qc/0010105 | Michael B. Mensky | Michael B. Mensky | Classical and quantum equivalence principle in terms of the path group | LATEX, 5 pages | Helv.Phys.Acta 69:301-304,1996 | null | null | gr-qc | null | A natural mapping of paths in a curved space onto the paths in the
corresponding (tangent) flat space may be used to reduce the curved-space-time
path integral to the flat-space-time path integral. The dynamics of the
particle in a curved space-time is expressed then in terms of an integral over
paths in the flat (Mi... | [
{
"created": "Sat, 28 Oct 2000 12:43:54 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Nov 2000 15:01:56 GMT",
"version": "v2"
}
] | 2011-04-15 | [
[
"Mensky",
"Michael B.",
""
]
] | A natural mapping of paths in a curved space onto the paths in the corresponding (tangent) flat space may be used to reduce the curved-space-time path integral to the flat-space-time path integral. The dynamics of the particle in a curved space-time is expressed then in terms of an integral over paths in the flat (Mink... |
gr-qc/9806046 | Vladimir Dzhunushaliev | Dzhunushaliev V.D | Spherically Symmetric Solution for Torsion and the Dirac equation in 5D
spacetime | 7 pages, REVTEX, essential changing of text | Int.J.Mod.Phys.D7:909-915,1998 | 10.1142/S0218271898000590 | null | gr-qc hep-th | null | Torsion in a 5D spacetime is considered. In this case gravitation is defined
by the 5D metric and the torsion. It is conjectured that torsion is connected
with a spinor field. In this case Dirac's equation becomes the nonlinear
Heisenberg equation. It is shown that this equation has a discrete spectrum of
solutions w... | [
{
"created": "Tue, 9 Jun 1998 14:23:23 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Jul 1998 13:03:27 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"D",
"Dzhunushaliev V.",
""
]
] | Torsion in a 5D spacetime is considered. In this case gravitation is defined by the 5D metric and the torsion. It is conjectured that torsion is connected with a spinor field. In this case Dirac's equation becomes the nonlinear Heisenberg equation. It is shown that this equation has a discrete spectrum of solutions wit... |
0804.4296 | Bojan Losic | B. Losic and W.G. Unruh | Cosmological Perturbation Theory in Slow-Roll Spacetimes | Version accepted by PRL (however, with correct non PRL format for
arxiv posting). Clarified and expanded | Phys.Rev.Lett.101:111101,2008 | 10.1103/PhysRevLett.101.111101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a gauge invariant argument that a nonlocal measure of second-order
metric and matter perturbations dominate that of linear fluctuations in its
effect on the gravitational field in 'slow-rolling' spacetimes.
| [
{
"created": "Sun, 27 Apr 2008 20:13:05 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Sep 2008 01:58:50 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Losic",
"B.",
""
],
[
"Unruh",
"W. G.",
""
]
] | We present a gauge invariant argument that a nonlocal measure of second-order metric and matter perturbations dominate that of linear fluctuations in its effect on the gravitational field in 'slow-rolling' spacetimes. |
1206.0915 | Prayush Kumar | Prayush Kumar | Search for the PN coefficients for the Energy flux through Gravitational
Waves from Black-Hole Binaries using Markov Chain Monte Carlo | (59 pgs, 25figs). Undergraduate Thesis submitted to Birla Institute
of Technology & Science, Pilani, India; on 15th December, 2008 | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, the focus is on the improvement of the existing post-Newtonian
approximation for the gravitational flux from Super Massive Black Hole
Binaries. In order to improve the existing templates for LISA, we need more
accurate post-Newtonian expansions for the gravitational flux. Stochastic
search techniques li... | [
{
"created": "Tue, 5 Jun 2012 13:06:36 GMT",
"version": "v1"
}
] | 2012-06-06 | [
[
"Kumar",
"Prayush",
""
]
] | In this work, the focus is on the improvement of the existing post-Newtonian approximation for the gravitational flux from Super Massive Black Hole Binaries. In order to improve the existing templates for LISA, we need more accurate post-Newtonian expansions for the gravitational flux. Stochastic search techniques like... |
gr-qc/0111049 | Kirill Krasnov | Kirill Krasnov | Analytic Continuation for Asymptotically AdS 3D Gravity | 28 pages, 14 figures | Class.Quant.Grav. 19 (2002) 2399-2424 | 10.1088/0264-9381/19/9/306 | null | gr-qc hep-th math.CV | null | We have previously proposed that asymptotically AdS 3D wormholes and black
holes can be analytically continued to the Euclidean signature. The analytic
continuation procedure was described for non-rotating spacetimes, for which a
plane t=0 of time symmetry exists. The resulting Euclidean manifolds turned out
to be ha... | [
{
"created": "Fri, 16 Nov 2001 02:54:32 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Krasnov",
"Kirill",
""
]
] | We have previously proposed that asymptotically AdS 3D wormholes and black holes can be analytically continued to the Euclidean signature. The analytic continuation procedure was described for non-rotating spacetimes, for which a plane t=0 of time symmetry exists. The resulting Euclidean manifolds turned out to be hand... |
2209.00577 | Daan Janssen | Daan W. Janssen and Rainer Verch | Hadamard states on spherically symmetric characteristic surfaces, the
semi-classical Einstein equations and the Hawking effect | 34 pages, 6 pages appendix, 3 figures. v2: typographical corrections,
reordered bibliography, numbered equations, additional references added, more
detail added on certain definitions and derivations in appendix, expanded
discussion on Minkowski vacuum state | null | 10.1088/1361-6382/acb039 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate quasi-free Hadamard states defined via characteristic initial
data on null cones centred at the axis of symmetry in spherically symmetric
space-times. We characterize the necessary singular behaviour of null boundary
two-point functions such that one can define non-linear observables at this
null bound... | [
{
"created": "Thu, 1 Sep 2022 16:46:58 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Jan 2023 12:50:57 GMT",
"version": "v2"
}
] | 2023-01-06 | [
[
"Janssen",
"Daan W.",
""
],
[
"Verch",
"Rainer",
""
]
] | We investigate quasi-free Hadamard states defined via characteristic initial data on null cones centred at the axis of symmetry in spherically symmetric space-times. We characterize the necessary singular behaviour of null boundary two-point functions such that one can define non-linear observables at this null boundar... |
0907.4057 | Mairi Sakellariadou | William Nelson and Mairi Sakellariadou | Unstable Anisotropic Loop Quantum Cosmology | 13 pages, 2 figures | Phys.Rev.D80:063521,2009 | 10.1103/PhysRevD.80.063521 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study stability conditions of the full Hamiltonian constraint equation
describing the quantum dynamics of the diagonal Bianchi I model in the context
of LQC. Our analysis has shown robust evidence of an instability in the
explicit implementation of the difference equation, implying important
consequences for the c... | [
{
"created": "Thu, 23 Jul 2009 13:22:04 GMT",
"version": "v1"
}
] | 2009-11-06 | [
[
"Nelson",
"William",
""
],
[
"Sakellariadou",
"Mairi",
""
]
] | We study stability conditions of the full Hamiltonian constraint equation describing the quantum dynamics of the diagonal Bianchi I model in the context of LQC. Our analysis has shown robust evidence of an instability in the explicit implementation of the difference equation, implying important consequences for the cor... |
gr-qc/0502064 | Alessandro Nagar | Alessandro Nagar and Luciano Rezzolla | Gauge-invariant Non-spherical Metric Perturbations of Schwarzschild
Black-Hole Spacetimes | 24 pages, no figures, published as Classical and Quantum Gravity
topical review. Misprints present in the published version are corrected. A
few more typos in Eqs.(87) and (91) are corrected in the latest arXiv
submission | Class.Quant.Grav.22:R167,2005; Erratum-ibid.23:4297,2006 | 10.1088/0264-9381/22/16/R01 10.1088/0264-9381/23/12/C01 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The theory of gauge-invariant non-spherical metric perturbations of
Schwarzschild black hole spacetimes is now well established. Yet, as different
notations and conventions have been used throughout the years, the literature
on the subject is often confusing and sometimes confused. The purpose of this
paper is to rev... | [
{
"created": "Mon, 14 Feb 2005 17:18:30 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Jun 2005 11:09:57 GMT",
"version": "v2"
},
{
"created": "Sat, 16 Jul 2005 12:07:26 GMT",
"version": "v3"
},
{
"created": "Sun, 2 Apr 2006 13:32:11 GMT",
"version": "v4"
},
{
"cr... | 2020-09-08 | [
[
"Nagar",
"Alessandro",
""
],
[
"Rezzolla",
"Luciano",
""
]
] | The theory of gauge-invariant non-spherical metric perturbations of Schwarzschild black hole spacetimes is now well established. Yet, as different notations and conventions have been used throughout the years, the literature on the subject is often confusing and sometimes confused. The purpose of this paper is to revie... |
1205.5336 | Ozgur Delice | \"Ozg\"ur Delice, P{\i}nar Kirezli, Dilek K. \c{C}iftci | Higher Dimensional Cylindrical or Kasner Type Electrovacuum Solutions | 16 pages, Revtex. Text and references are extended, Published version | Gen. Relativ. Gravit. 45, 2251 (2013) | 10.1007/s10714-013-1583-0 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a D dimensional Kasner type diagonal spacetime where metric
functions depend only on a single coordinate and electromagnetic field shares
the symmetries of spacetime. These solutions can describe static cylindrical or
cosmological Einstein-Maxwell vacuum spacetimes. We mainly focus on
electrovacuum soluti... | [
{
"created": "Thu, 24 May 2012 05:51:14 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Sep 2013 14:59:36 GMT",
"version": "v2"
}
] | 2013-10-31 | [
[
"Delice",
"Özgür",
""
],
[
"Kirezli",
"Pınar",
""
],
[
"Çiftci",
"Dilek K.",
""
]
] | We consider a D dimensional Kasner type diagonal spacetime where metric functions depend only on a single coordinate and electromagnetic field shares the symmetries of spacetime. These solutions can describe static cylindrical or cosmological Einstein-Maxwell vacuum spacetimes. We mainly focus on electrovacuum solution... |
2010.01353 | Sergey Bondarenko | S.Bondarenko | CPTM symmetry, closed time paths and cosmological constant problem in
the formalism of extended manifold | 30 pages, 1 fugure | null | 10.1140/epjc/s10052-021-09045-4 | null | gr-qc cond-mat.other hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The problem of the cosmological constant is considered in the formalism of an
extended space-time consisting of the extended classical solution of Einstein
equations. The different regions of the extended manifold are proposed to be
related by the charge, parity, time and mass (CPTM) reversal symmetry applied
with re... | [
{
"created": "Sat, 3 Oct 2020 13:26:07 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Oct 2020 07:41:46 GMT",
"version": "v2"
},
{
"created": "Wed, 2 Dec 2020 11:25:19 GMT",
"version": "v3"
},
{
"created": "Thu, 18 Feb 2021 09:32:51 GMT",
"version": "v4"
}
] | 2021-04-07 | [
[
"Bondarenko",
"S.",
""
]
] | The problem of the cosmological constant is considered in the formalism of an extended space-time consisting of the extended classical solution of Einstein equations. The different regions of the extended manifold are proposed to be related by the charge, parity, time and mass (CPTM) reversal symmetry applied with resp... |
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