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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1712.03715 | Daniela Doneva | Daniela D. Doneva, Stoytcho S. Yazadjiev | Neutron star solutions with curvature induced scalarization in the
extended Gauss-Bonnet scalar-tensor theories | 12 pages, 5 figures | null | 10.1088/1475-7516/2018/04/011 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper we study models of neutron stars in a class of extended
scalar-tensor Gauss-Bonnet (ESTGB) theories for which the scalar degree of
freedom is exited only in the strong curvature regime. We show that in the
framework of the ESTGB theories under consideration there exist new neutron
star solutions ... | [
{
"created": "Mon, 11 Dec 2017 10:53:15 GMT",
"version": "v1"
}
] | 2018-04-18 | [
[
"Doneva",
"Daniela D.",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
]
] | In the present paper we study models of neutron stars in a class of extended scalar-tensor Gauss-Bonnet (ESTGB) theories for which the scalar degree of freedom is exited only in the strong curvature regime. We show that in the framework of the ESTGB theories under consideration there exist new neutron star solutions wh... |
gr-qc/0510004 | Haret Rosu | H.C. Rosu, P. Ojeda-May | Supersymmetry of FRW barotropic cosmologies | 6 pages | Int.J.Theor.Phys. 45 (2006) 1191-1196 | 10.1007/s10773-006-9123-2 | null | gr-qc | null | Barotropic FRW cosmologies are presented from the standpoint of
nonrelativistic supersymmetry. First, we reduce the barotropic FRW system of
differential equations to simple harmonic oscillator differential equations.
Employing the factorization procedure, the solutions of the latter equations
are divided into the tw... | [
{
"created": "Sun, 2 Oct 2005 02:36:52 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rosu",
"H. C.",
""
],
[
"Ojeda-May",
"P.",
""
]
] | Barotropic FRW cosmologies are presented from the standpoint of nonrelativistic supersymmetry. First, we reduce the barotropic FRW system of differential equations to simple harmonic oscillator differential equations. Employing the factorization procedure, the solutions of the latter equations are divided into the two ... |
gr-qc/0209035 | Naresh Dadhich | A. Banerjee, S. Chatterjee, N. Dadhich | Spherical collapse with heat flow and without horizon | RevTeX, 3 pages | Mod.Phys.Lett.A17:2335-2340,2002 | 10.1142/S0217732302008320 | null | gr-qc | null | We present a class of solutions for a heat conducting fluid sphere, which
radiates energy during collapse without the appearance of horizon at the
boundary at any stage of the collapse. A simple model shows that there is no
accumulation of energy due to collapse since it radiates out at the same rate
as it is being g... | [
{
"created": "Tue, 10 Sep 2002 12:10:14 GMT",
"version": "v1"
}
] | 2010-05-12 | [
[
"Banerjee",
"A.",
""
],
[
"Chatterjee",
"S.",
""
],
[
"Dadhich",
"N.",
""
]
] | We present a class of solutions for a heat conducting fluid sphere, which radiates energy during collapse without the appearance of horizon at the boundary at any stage of the collapse. A simple model shows that there is no accumulation of energy due to collapse since it radiates out at the same rate as it is being gen... |
2310.00859 | Manuel D. Malaver | Manuel Malaver and Rajan Iyer | Some new relativistic charged models for compact objects with
anisotropic pressure | 24 pages, 15 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we found new classes of solutions to the Einstein-Maxwell
field equations with matter anisotropic distribution incorporating a particular
form of electric field intensity within the framework of general relativity. We
use a metric potential or ansatz that depends on an adjustable parameter in
order to ... | [
{
"created": "Mon, 2 Oct 2023 02:44:15 GMT",
"version": "v1"
}
] | 2023-10-03 | [
[
"Malaver",
"Manuel",
""
],
[
"Iyer",
"Rajan",
""
]
] | In this paper, we found new classes of solutions to the Einstein-Maxwell field equations with matter anisotropic distribution incorporating a particular form of electric field intensity within the framework of general relativity. We use a metric potential or ansatz that depends on an adjustable parameter in order to ge... |
2003.03738 | Cosimo Bambi | Menglei Zhou, Askar B. Abdikamalov, Dimitry Ayzenberg, Cosimo Bambi,
Leonardo Modesto, Sourabh Nampalliwar, Yerong Xu | Singularity-free black holes in conformal gravity: new observational
constraints | 6 pages, 3 figures | Europhys.Lett. 125: 30002, 2019 | 10.1209/0295-5075/125/30002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the family of singularity-free rotating black hole solutions in
Einstein's conformal gravity found in Bambi, Modesto & Rachwal (2017) and we
constrain the value of the conformal parameter $L$ from the analysis of a 30 ks
NuSTAR observation of the stellar-mass black hole in GS 1354-645 during its
outburst ... | [
{
"created": "Sun, 8 Mar 2020 07:33:44 GMT",
"version": "v1"
}
] | 2020-03-10 | [
[
"Zhou",
"Menglei",
""
],
[
"Abdikamalov",
"Askar B.",
""
],
[
"Ayzenberg",
"Dimitry",
""
],
[
"Bambi",
"Cosimo",
""
],
[
"Modesto",
"Leonardo",
""
],
[
"Nampalliwar",
"Sourabh",
""
],
[
"Xu",
"Yerong",
""
... | We consider the family of singularity-free rotating black hole solutions in Einstein's conformal gravity found in Bambi, Modesto & Rachwal (2017) and we constrain the value of the conformal parameter $L$ from the analysis of a 30 ks NuSTAR observation of the stellar-mass black hole in GS 1354-645 during its outburst in... |
gr-qc/0104002 | Kayll Lake | Nicholas Neary, Mustapha Ishak and Kayll Lake | The Tolman VII solution, trapped null orbits and w - modes | 5 pages revtex. 10 figures png. Further information at
http://grtensor.phy.queensu.ca/tolmanvii/ | Phys.Rev. D64 (2001) 084001 | 10.1103/PhysRevD.64.084001 | null | gr-qc astro-ph | null | The Tolman VII solution is an exact static spherically symmetric perfect
fluid solution of Einstein's equations that exhibits a surprisingly good
approximation to a neutron star. We show that this solution exhibits trapped
null orbits in a causal region even for a tenuity (total radius to mass ratio)
$> 3$. In this r... | [
{
"created": "Sat, 31 Mar 2001 18:12:44 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Jul 2001 18:20:40 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Neary",
"Nicholas",
""
],
[
"Ishak",
"Mustapha",
""
],
[
"Lake",
"Kayll",
""
]
] | The Tolman VII solution is an exact static spherically symmetric perfect fluid solution of Einstein's equations that exhibits a surprisingly good approximation to a neutron star. We show that this solution exhibits trapped null orbits in a causal region even for a tenuity (total radius to mass ratio) $> 3$. In this reg... |
2001.06006 | H.. Lawrence Helfer | H. L. Helfer | II. A GR Source Term $T^{\mu \nu}$ For Dark Matter | null | null | null | null | gr-qc astro-ph.GA | http://creativecommons.org/publicdomain/zero/1.0/ | Two forms are suggested for the energy-momentum source term associated with
an aggregate of dark matter (with the properties described in Paper I). Both
have large pressure-like components which dominate the density terms. Using one
form a simple model of the spiral galaxy halos is developed which can match the
obser... | [
{
"created": "Thu, 16 Jan 2020 17:20:39 GMT",
"version": "v1"
}
] | 2020-01-20 | [
[
"Helfer",
"H. L.",
""
]
] | Two forms are suggested for the energy-momentum source term associated with an aggregate of dark matter (with the properties described in Paper I). Both have large pressure-like components which dominate the density terms. Using one form a simple model of the spiral galaxy halos is developed which can match the observe... |
gr-qc/0304080 | Luc Blanchet | Luc Blanchet | Time-symmetric initial data for binary black holes in numerical
relativity | 27 pages, to appear in Phys. Rev. D | Phys.Rev. D68 (2003) 084002 | 10.1103/PhysRevD.68.084002 | null | gr-qc | null | We look for physically realistic initial data in numerical relativity which
are in agreement with post-Newtonian approximations. We propose a particular
solution of the time-symmetric constraint equation, appropriate to two
momentarily static black holes, in the form of a conformal decomposition of the
spatial metric... | [
{
"created": "Tue, 22 Apr 2003 13:26:34 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Jun 2003 18:29:03 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Blanchet",
"Luc",
""
]
] | We look for physically realistic initial data in numerical relativity which are in agreement with post-Newtonian approximations. We propose a particular solution of the time-symmetric constraint equation, appropriate to two momentarily static black holes, in the form of a conformal decomposition of the spatial metric. ... |
gr-qc/9703050 | Takashi Okamura | Takashi Okamura | On scattering off the extreme Reissner-Nordstr\"om black hole in N=2
supergravity | 9 pages, revtex, no figures, a few typing errors corrected | Phys. Rev. D 56, 4927 (1997) | 10.1103/PhysRevD.56.4927 | null | gr-qc | null | The scattering amplitudes for the perturbed fields of the N=2 supergravity
about the extreme Reissner-Nordstr\"om black hole is examined. Owing to the
fact that the extreme hole is a BPS state of the theory and preserves an
unbroken global supersymmetry(N=1), the scattering amplitudes of the component
fields should b... | [
{
"created": "Wed, 19 Mar 1997 10:41:18 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Apr 1997 07:45:06 GMT",
"version": "v2"
}
] | 2016-08-25 | [
[
"Okamura",
"Takashi",
""
]
] | The scattering amplitudes for the perturbed fields of the N=2 supergravity about the extreme Reissner-Nordstr\"om black hole is examined. Owing to the fact that the extreme hole is a BPS state of the theory and preserves an unbroken global supersymmetry(N=1), the scattering amplitudes of the component fields should be ... |
1710.06954 | Jorma Louko | Jorma Louko, Samuel D. Upton | Low energy Lorentz violation from high energy modified dispersion in
inertial and circular motion | 21 pages. v4: typesetting error corrected in bibitem [39] | Phys. Rev. D 97, 025008 (2018) | 10.1103/PhysRevD.97.025008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an Unruh-DeWitt detector in inertial and circular motion in
Minkowski spacetime of arbitrary dimension, coupled to a quantised scalar field
with the Lorentz-violating dispersion relation $\omega = |{\bf k}|\, f (|{\bf
k}|/M_{\star})$, where $M_{\star}$ is the Lorentz-breaking scale. Assuming that
$f$ dips... | [
{
"created": "Wed, 18 Oct 2017 22:51:44 GMT",
"version": "v1"
},
{
"created": "Sun, 29 Oct 2017 16:03:39 GMT",
"version": "v2"
},
{
"created": "Fri, 12 Jan 2018 20:30:56 GMT",
"version": "v3"
},
{
"created": "Sun, 18 Oct 2020 16:07:39 GMT",
"version": "v4"
}
] | 2020-10-20 | [
[
"Louko",
"Jorma",
""
],
[
"Upton",
"Samuel D.",
""
]
] | We consider an Unruh-DeWitt detector in inertial and circular motion in Minkowski spacetime of arbitrary dimension, coupled to a quantised scalar field with the Lorentz-violating dispersion relation $\omega = |{\bf k}|\, f (|{\bf k}|/M_{\star})$, where $M_{\star}$ is the Lorentz-breaking scale. Assuming that $f$ dips b... |
2407.04443 | Harish Dhananjay Nalla | Chia-Min Lin, Harish Dhananjay Nalla, Chen-Pin Yeh, Da-Shin Lee | Primordial perturbations in Type III hilltop inflation models | 13 pages, 6 figures. arXiv admin note: text overlap with
arXiv:2311.13746 | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We analytically compute the power spectrum of primordial curvature
perturbations in Type III hilltop inflation models under the slow-roll
approximation. The model parameters are constrained using current Cosmic
Microwave Background (CMB) data. The curvature perturbations that exit the
horizon at small scales show suf... | [
{
"created": "Fri, 5 Jul 2024 11:54:28 GMT",
"version": "v1"
}
] | 2024-07-08 | [
[
"Lin",
"Chia-Min",
""
],
[
"Nalla",
"Harish Dhananjay",
""
],
[
"Yeh",
"Chen-Pin",
""
],
[
"Lee",
"Da-Shin",
""
]
] | We analytically compute the power spectrum of primordial curvature perturbations in Type III hilltop inflation models under the slow-roll approximation. The model parameters are constrained using current Cosmic Microwave Background (CMB) data. The curvature perturbations that exit the horizon at small scales show suffi... |
gr-qc/0306082 | Hiroyuki Nakano | Hiroyuki Nakano, Hirotaka Takahashi, Hideyuki Tagoshi, Misao Sasaki | An Effective Search Method for Gravitational Ringing of Black Holes | 17 pages, 9 figures. Accepted to Phys. Rev. D, Note correction to Eq.
(3-25), A few comments added and minor typos corrected | Phys.Rev.D68:102003,2003 | 10.1103/PhysRevD.68.102003 | OU-TAP-207, OCU-PHYS-201, AP-GR-11, YITP-03-36 | gr-qc astro-ph | null | We develop a search method for gravitational ringing of black holes. The
gravitational ringing is due to complex frequency modes called the quasi-normal
modes that are excited when a black hole geometry is perturbed. The detection
of it will be a direct confirmation of the existence of a black hole. Assuming
that the... | [
{
"created": "Wed, 18 Jun 2003 11:43:20 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jun 2003 09:12:51 GMT",
"version": "v2"
},
{
"created": "Fri, 4 Jul 2003 08:30:39 GMT",
"version": "v3"
},
{
"created": "Sun, 24 Aug 2003 23:57:13 GMT",
"version": "v4"
},
{
"cr... | 2009-10-09 | [
[
"Nakano",
"Hiroyuki",
""
],
[
"Takahashi",
"Hirotaka",
""
],
[
"Tagoshi",
"Hideyuki",
""
],
[
"Sasaki",
"Misao",
""
]
] | We develop a search method for gravitational ringing of black holes. The gravitational ringing is due to complex frequency modes called the quasi-normal modes that are excited when a black hole geometry is perturbed. The detection of it will be a direct confirmation of the existence of a black hole. Assuming that the r... |
2007.09108 | Soichiro Morisaki | Soichiro Morisaki, Vivien Raymond | Rapid Parameter Estimation of Gravitational Waves from Binary Neutron
Star Coalescence using Focused Reduced Order Quadrature | 16 pages, 7 figures | Phys. Rev. D 102, 104020 (2020) | 10.1103/PhysRevD.102.104020 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Rapid parameter estimation of gravitational waves from binary neutron star
coalescence, in particular accurate sky localisation in minutes after the
initial detection stage, is crucial for the success of multi-messenger
observations. One of the techniques to speed up the parameter estimation, which
has been applied f... | [
{
"created": "Fri, 17 Jul 2020 16:35:29 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Mar 2021 03:28:26 GMT",
"version": "v2"
}
] | 2021-03-24 | [
[
"Morisaki",
"Soichiro",
""
],
[
"Raymond",
"Vivien",
""
]
] | Rapid parameter estimation of gravitational waves from binary neutron star coalescence, in particular accurate sky localisation in minutes after the initial detection stage, is crucial for the success of multi-messenger observations. One of the techniques to speed up the parameter estimation, which has been applied for... |
gr-qc/0001019 | Luis Anchordoqui | Luis A. Anchordoqui and Santiago E. Perez Bergliaffa | The world is not enough | To be published in Phys. Rev. D with the title: ``Wormhole-surgery
and cosmology on the brane: The world is not enough''. This revised version
includes a discussion on the mechanism of gravitational trapping for a scalar
particle which will not be published in the journal | Phys.Rev. D62 (2000) 067502 | 10.1103/PhysRevD.62.067502 | null | gr-qc astro-ph hep-th | null | We show that the 5-dimensional model introduced by Randall and Sundrum is
(half of) a wormhole, and that this is a general result in models of the RS
type. We also discuss the gravitational trapping of a scalar particle in 5-d
spacetimes. Finally, we present a simple model of brane-world cosmology in
which the backgr... | [
{
"created": "Sat, 8 Jan 2000 00:13:33 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Jan 2000 21:24:28 GMT",
"version": "v2"
},
{
"created": "Sat, 6 May 2000 14:56:27 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Anchordoqui",
"Luis A.",
""
],
[
"Bergliaffa",
"Santiago E. Perez",
""
]
] | We show that the 5-dimensional model introduced by Randall and Sundrum is (half of) a wormhole, and that this is a general result in models of the RS type. We also discuss the gravitational trapping of a scalar particle in 5-d spacetimes. Finally, we present a simple model of brane-world cosmology in which the backgrou... |
2308.16624 | Matt Visser | Joshua Baines (Victoria University of Wellington), Rudeep Gaur
(Victoria University of Wellington), and Matt Visser (Victoria University of
Wellington) | Defect wormholes are defective | V1: 17 pages; 41 references; V2: Now 19 pages, 62 references. Some
discussion added regarding the coordinate invariant eigenvalues of the mixed
Ricci and Riemann tensors | Universe 9 (2023) 452 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The various "defect wormholes" developed by Klinkhamer have recently
attracted considerable attention -- especially in view of the fact that the
simplest example, the so-called "vacuum defect wormhole", was claimed to be an
everywhere-vacuum everywhere-Ricci-flat exact solution to the Einstein
equations. This claim h... | [
{
"created": "Thu, 31 Aug 2023 10:42:36 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Oct 2023 00:39:04 GMT",
"version": "v2"
}
] | 2023-10-26 | [
[
"Baines",
"Joshua",
"",
"Victoria University of Wellington"
],
[
"Gaur",
"Rudeep",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of\n Wellington"
]
] | The various "defect wormholes" developed by Klinkhamer have recently attracted considerable attention -- especially in view of the fact that the simplest example, the so-called "vacuum defect wormhole", was claimed to be an everywhere-vacuum everywhere-Ricci-flat exact solution to the Einstein equations. This claim has... |
1105.4194 | Marc Geiller | Marc Geiller, Marc Lachieze-Rey, Karim Noui | A new look at Lorentz-Covariant Loop Quantum Gravity | 28 pages. Revised version taking into account referee's comments | Phys.Rev.D84:044002,2011 | 10.1103/PhysRevD.84.044002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we study the classical and quantum properties of the unique
commutative Lorentz-covariant connection for loop quantum gravity. This
connection has been found after solving the second-class constraints inherited
from the canonical analysis of the Holst action without the time-gauge. We show
that it has t... | [
{
"created": "Fri, 20 May 2011 23:32:16 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Aug 2011 20:54:54 GMT",
"version": "v2"
}
] | 2011-08-12 | [
[
"Geiller",
"Marc",
""
],
[
"Lachieze-Rey",
"Marc",
""
],
[
"Noui",
"Karim",
""
]
] | In this work, we study the classical and quantum properties of the unique commutative Lorentz-covariant connection for loop quantum gravity. This connection has been found after solving the second-class constraints inherited from the canonical analysis of the Holst action without the time-gauge. We show that it has the... |
2105.02934 | Mariaveronica De Angelis | Mariaveronica De Angelis, Laria Figurato, Giovanni Montani | Quantum Dynamics of the Isotropic Universe in the Metric f(R) Gravity | 9 pages, 6 figures | Phys. Rev. D 104, 024054 (2021) | 10.1103/PhysRevD.104.024054 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse the canonical quantum dynamics of the isotropic universe, as
emerging from the Hamiltonian formulation of a metric f(R) gravity, viewed in
the Jordan frame. The canonical method of quantization is performed by solving
the Hamiltonian constraint before quantizing and adopting like a relational
time the non-... | [
{
"created": "Thu, 6 May 2021 20:19:11 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Sep 2021 10:12:02 GMT",
"version": "v2"
}
] | 2021-09-06 | [
[
"De Angelis",
"Mariaveronica",
""
],
[
"Figurato",
"Laria",
""
],
[
"Montani",
"Giovanni",
""
]
] | We analyse the canonical quantum dynamics of the isotropic universe, as emerging from the Hamiltonian formulation of a metric f(R) gravity, viewed in the Jordan frame. The canonical method of quantization is performed by solving the Hamiltonian constraint before quantizing and adopting like a relational time the non-mi... |
2401.04917 | Tayyab Naseer | M. Sharif, Tayyab Naseer | Charged Anisotropic Spherical Collapse in
$f(\mathcal{R},\mathcal{T},\mathcal{Q})$ Gravity | 30 pages, no figure | Chin. J. Phys. 81(2023)37-50 | 10.1016/j.cjph.2022.10.017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper discusses the gravitational collapse of dynamical self-gravitating
fluid distribution in $f(\mathcal{R},\mathcal{T},\mathcal{Q})$ gravity, where
$\mathcal{Q}=\mathcal{R}_{\varphi\vartheta}\mathcal{T}^{\varphi\vartheta}$. In
this regard, we assume a charged anisotropic spherical geometry involving
dissipati... | [
{
"created": "Wed, 10 Jan 2024 04:01:45 GMT",
"version": "v1"
}
] | 2024-01-11 | [
[
"Sharif",
"M.",
""
],
[
"Naseer",
"Tayyab",
""
]
] | This paper discusses the gravitational collapse of dynamical self-gravitating fluid distribution in $f(\mathcal{R},\mathcal{T},\mathcal{Q})$ gravity, where $\mathcal{Q}=\mathcal{R}_{\varphi\vartheta}\mathcal{T}^{\varphi\vartheta}$. In this regard, we assume a charged anisotropic spherical geometry involving dissipation... |
1305.0820 | Tiberiu Harko | Tiberiu Harko, Francisco S. N. Lobo, M. K. Mak, Sergey V. Sushkov | Dark matter density profile and galactic metric in Eddington-inspired
Born-Infeld gravity | 7 pages, 3 figures; accepted for publication in MPLA | Mod.Phys.Lett. A29 (2014) 1450049 | 10.1142/S0217732314500497 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the density profile of pressureless dark matter in
Eddington-inspired Born-Infeld (EiBI) gravity. The gravitational field
equations are investigated for a spherically symmetric dark matter galactic
halo, by adopting a phenomenological tangential velocity profile for test
particles moving in stable circula... | [
{
"created": "Fri, 3 May 2013 05:32:50 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Feb 2014 09:06:23 GMT",
"version": "v2"
}
] | 2014-03-13 | [
[
"Harko",
"Tiberiu",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Mak",
"M. K.",
""
],
[
"Sushkov",
"Sergey V.",
""
]
] | We consider the density profile of pressureless dark matter in Eddington-inspired Born-Infeld (EiBI) gravity. The gravitational field equations are investigated for a spherically symmetric dark matter galactic halo, by adopting a phenomenological tangential velocity profile for test particles moving in stable circular ... |
1501.00488 | Emmanuil Saridakis | Genly Leon (Valparaiso U., Catolica), Emmanuel N. Saridakis (Natl.
Tech. U., Athens & Valparaiso U., Catolica) | Dynamical behavior in mimetic F(R) gravity | 33 pages, 6 figures, 6 tables, version published in JCAP | JCAP 1504 (2015) 031 | 10.1088/1475-7516/2015/04/031 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the cosmological behavior of mimetic F(R) gravity. This
scenario is the F(R) extension of usual mimetic gravity classes, which are
based on re-parametrizations of the metric using new, but not propagating,
degrees of freedom, that can lead to a wider family of solutions. Performing a
detailed dynamical... | [
{
"created": "Wed, 31 Dec 2014 20:00:57 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Jan 2015 17:39:11 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Apr 2015 14:44:39 GMT",
"version": "v3"
}
] | 2015-04-22 | [
[
"Leon",
"Genly",
"",
"Valparaiso U., Catolica"
],
[
"Saridakis",
"Emmanuel N.",
"",
"Natl.\n Tech. U., Athens & Valparaiso U., Catolica"
]
] | We investigate the cosmological behavior of mimetic F(R) gravity. This scenario is the F(R) extension of usual mimetic gravity classes, which are based on re-parametrizations of the metric using new, but not propagating, degrees of freedom, that can lead to a wider family of solutions. Performing a detailed dynamical a... |
1802.01084 | Hosein Mohammadzadeh | Hosein Mohammadzadeh, Maryam Rastkar and Morteza Nattagh Najafi | Thermodynamic Geometry of Normal (Exotic) BTZ Black Hole Regarding to
the Fluctuation of Cosmological Constant | 17 pages, 6 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct the thermodynamic geometry of $2+1$ dimensional normal (exotic)
BTZ black hole regarding to the fluctuation of cosmological constant. We argue
that while the thermodynamic geometry of black hole without fluctuation of
cosmological constant is a two dimensional flat spaces, the three dimensional
thermodyn... | [
{
"created": "Sun, 4 Feb 2018 07:09:58 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Apr 2018 16:04:45 GMT",
"version": "v2"
}
] | 2018-04-03 | [
[
"Mohammadzadeh",
"Hosein",
""
],
[
"Rastkar",
"Maryam",
""
],
[
"Najafi",
"Morteza Nattagh",
""
]
] | We construct the thermodynamic geometry of $2+1$ dimensional normal (exotic) BTZ black hole regarding to the fluctuation of cosmological constant. We argue that while the thermodynamic geometry of black hole without fluctuation of cosmological constant is a two dimensional flat spaces, the three dimensional thermodynam... |
1411.2601 | Radouane Gannouji | Apratim Ganguly, Radouane Gannouji, Rituparno Goswami and Subharthi
Ray | Global structure of Black Holes via dynamical system | 13 pages, 9 figures | null | 10.1088/0264-9381/32/10/105006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We recast the system of Einstein field equations for Locally Rotationally
Symmetric spacetimes into an autonomous system of covariantly defined
geometrical variables. The analysis of this autonomous system gives all the
important global features of the maximal extension of these spacetimes. We
conclude that the dynam... | [
{
"created": "Mon, 10 Nov 2014 21:01:31 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Ganguly",
"Apratim",
""
],
[
"Gannouji",
"Radouane",
""
],
[
"Goswami",
"Rituparno",
""
],
[
"Ray",
"Subharthi",
""
]
] | We recast the system of Einstein field equations for Locally Rotationally Symmetric spacetimes into an autonomous system of covariantly defined geometrical variables. The analysis of this autonomous system gives all the important global features of the maximal extension of these spacetimes. We conclude that the dynamic... |
0807.4910 | Lorenzo Sindoni | Florian Girelli, Stefano Liberati and Lorenzo Sindoni | Gravitational dynamics in Bose Einstein condensates | Replaced with published version. 15 pages, no figures, revtex4.
Reference added | Phys.Rev.D78:084013,2008 | 10.1103/PhysRevD.78.084013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Analogue models for gravity intend to provide a framework where matter and
gravity, as well as their intertwined dynamics, emerge from degrees of freedom
that have a priori nothing to do with what we call gravity or matter. Bose
Einstein condensates (BEC) are a natural example of analogue model since one
can identify... | [
{
"created": "Wed, 30 Jul 2008 18:39:59 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Dec 2008 11:46:03 GMT",
"version": "v2"
}
] | 2008-12-03 | [
[
"Girelli",
"Florian",
""
],
[
"Liberati",
"Stefano",
""
],
[
"Sindoni",
"Lorenzo",
""
]
] | Analogue models for gravity intend to provide a framework where matter and gravity, as well as their intertwined dynamics, emerge from degrees of freedom that have a priori nothing to do with what we call gravity or matter. Bose Einstein condensates (BEC) are a natural example of analogue model since one can identify m... |
1109.3990 | Muhammad Sharif | M. Sharif and Saira Waheed | Energy Content of Colliding Plane Waves using Approximate Noether
Symmetries | 18 pages, accepted for publication in Brazilian J Physics | Braz. J. Phys. 42(2012)219-226 | 10.1007/s13538-012-0071-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is devoted to study the energy content of colliding plane waves
using approximate Noether symmetries. For this purpose, we use approximate Lie
symmetry method of Lagrangian for differential equations. We formulate the
first-order perturbed Lagrangian for colliding plane electromagnetic and
gravitational wa... | [
{
"created": "Mon, 19 Sep 2011 10:27:08 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Sharif",
"M.",
""
],
[
"Waheed",
"Saira",
""
]
] | This paper is devoted to study the energy content of colliding plane waves using approximate Noether symmetries. For this purpose, we use approximate Lie symmetry method of Lagrangian for differential equations. We formulate the first-order perturbed Lagrangian for colliding plane electromagnetic and gravitational wave... |
1703.07899 | Carlos Augusto Romero Filho | R. Avalos, F. Dahia, C. Romero and J.H. Lira | On the proof of the Thin Sandwich Conjecture in arbitrary dimensions | 17 pages | Journal of Mathematical Physics 58, 102502 (2017) | 10.1063/1.4989573 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we show the validity, under certain geometric conditions, of
Wheeler's thin sandwich conjecture for higher dimensional theories of gravity.
We extend the results shown by R. Bartnik and G. Fodor for the 3-dimensional
case in two ways. On the one hand, we show that the results obtained by the
mentioned a... | [
{
"created": "Thu, 23 Mar 2017 00:44:09 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Nov 2017 20:54:07 GMT",
"version": "v2"
}
] | 2017-11-03 | [
[
"Avalos",
"R.",
""
],
[
"Dahia",
"F.",
""
],
[
"Romero",
"C.",
""
],
[
"Lira",
"J. H.",
""
]
] | In this paper we show the validity, under certain geometric conditions, of Wheeler's thin sandwich conjecture for higher dimensional theories of gravity. We extend the results shown by R. Bartnik and G. Fodor for the 3-dimensional case in two ways. On the one hand, we show that the results obtained by the mentioned aut... |
1411.0323 | Tomasz Pawlowski | Tomasz Paw{\l}owski | Observations on interfacing loop quantum gravity with cosmology | RevRex4-1, BibTex, 20pp | Phys. Rev. D 92, 124020 (2015) | 10.1103/PhysRevD.92.124020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A simple idea of relating the LQG and LQC degrees of freedom is discussed in
context of toroidal Bianchi I model. The idea is an expansion of the
construction originally introduced by Ashtekar and Wilson-Ewing and relies on
explicit averaging of certain sub-class of spin-networks over the subgroup of
the diffeomorphi... | [
{
"created": "Sun, 2 Nov 2014 21:38:41 GMT",
"version": "v1"
}
] | 2015-12-16 | [
[
"Pawłowski",
"Tomasz",
""
]
] | A simple idea of relating the LQG and LQC degrees of freedom is discussed in context of toroidal Bianchi I model. The idea is an expansion of the construction originally introduced by Ashtekar and Wilson-Ewing and relies on explicit averaging of certain sub-class of spin-networks over the subgroup of the diffeomorphism... |
1002.2656 | Igor Rodnianski | S. Klainerman, I. Rodnianski | On emerging scarred surfaces for the Einstein vacuum equations | null | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is a follow up on our previous work in which we have presented a
modified, simpler version of the remarkable recent result of Christodoulou on
the formation of trapped surfaces. In this paper we prove two related results.
First we extend the semi-global existence result, which was at the heart of our
previous wo... | [
{
"created": "Fri, 12 Feb 2010 22:54:37 GMT",
"version": "v1"
}
] | 2010-02-16 | [
[
"Klainerman",
"S.",
""
],
[
"Rodnianski",
"I.",
""
]
] | This is a follow up on our previous work in which we have presented a modified, simpler version of the remarkable recent result of Christodoulou on the formation of trapped surfaces. In this paper we prove two related results. First we extend the semi-global existence result, which was at the heart of our previous work... |
2103.05304 | Diego S\'aez-Chill\'on G\'omez | Shin'ichi Nojiri, Sergei D. Odintsov, Diego Saez-Chillon Gomez, German
S. Sharov | Modelling and testing the equation of state for (Early) dark energy | 19 pages, 2 figures, analysis extended, version accepted for
publication in Phys. of the Dark Universe | Phys. Dark Univ. 32 (2021) 100837 | 10.1016/j.dark.2021.100837 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A general equation of state is considered for analysing the possible
behaviors for (Early) dark energy that alleviates the Hubble parameter tension
problem. By departing from the possible evolution for the (Early) dark energy
density and the corresponding dynamical equations, the equation of state is
obtained, which ... | [
{
"created": "Tue, 9 Mar 2021 09:03:21 GMT",
"version": "v1"
},
{
"created": "Mon, 17 May 2021 11:45:17 GMT",
"version": "v2"
}
] | 2021-05-25 | [
[
"Nojiri",
"Shin'ichi",
""
],
[
"Odintsov",
"Sergei D.",
""
],
[
"Gomez",
"Diego Saez-Chillon",
""
],
[
"Sharov",
"German S.",
""
]
] | A general equation of state is considered for analysing the possible behaviors for (Early) dark energy that alleviates the Hubble parameter tension problem. By departing from the possible evolution for the (Early) dark energy density and the corresponding dynamical equations, the equation of state is obtained, which al... |
0710.4393 | Florian Girelli | Florian Girelli, David Poulin | Quantum reference frames and deformed symmetries | 11 pages, revtex. Comments are welcome | Phys.Rev.D77:104012,2008 | 10.1103/PhysRevD.77.104012 | null | gr-qc quant-ph | null | In the context of constrained quantum mechanics, reference systems are used
to construct relational observables that are invariant under the action of the
symmetry group. Upon measurement of a relational observable, the reference
system undergoes an unavoidable measurement "back-action" that modifies its
properties. ... | [
{
"created": "Wed, 24 Oct 2007 07:34:03 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Girelli",
"Florian",
""
],
[
"Poulin",
"David",
""
]
] | In the context of constrained quantum mechanics, reference systems are used to construct relational observables that are invariant under the action of the symmetry group. Upon measurement of a relational observable, the reference system undergoes an unavoidable measurement "back-action" that modifies its properties. In... |
gr-qc/0701011 | M Iftime | M.D.Iftime | Spacetime geometric structures and the Search for a Quantum Theory of
Gravity | 12 pages | Diff. Geom and Dyn.Syst, vol 10., no 1, 2008 | null | null | gr-qc | null | One of the biggest challenges to theoretical physics of our time is to find a
background-independent quantum theory of gravity.
Today one encounters a profusion of different attempts at quantization, but
no fully accepted - or acceptable, theory of quantum gravity. Any such approach
requires a response to a questio... | [
{
"created": "Sun, 31 Dec 2006 22:38:12 GMT",
"version": "v1"
},
{
"created": "Sat, 20 Jan 2007 23:56:44 GMT",
"version": "v2"
},
{
"created": "Sun, 4 Feb 2007 21:16:56 GMT",
"version": "v3"
},
{
"created": "Tue, 29 Jan 2008 19:57:11 GMT",
"version": "v4"
}
] | 2008-01-29 | [
[
"Iftime",
"M. D.",
""
]
] | One of the biggest challenges to theoretical physics of our time is to find a background-independent quantum theory of gravity. Today one encounters a profusion of different attempts at quantization, but no fully accepted - or acceptable, theory of quantum gravity. Any such approach requires a response to a question th... |
2006.14073 | Andrei Lebed G | Andrei G. Lebed | Breakdown of the Einstein's Equivalence Principle for a quantum body | Brief review | Modern Physics Letters A, 2030010 (2020) | 10.1142/S0217732320300104 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review our recent theoretical results about inequivalence between passive
gravitational mass and energy for a composite quantum body at a macroscopic
level. In particular, we consider macroscopic ensembles of the simplest
composite quantum bodies - hydrogen atoms. Our results are as follows. For the
most ensembles... | [
{
"created": "Wed, 24 Jun 2020 22:13:29 GMT",
"version": "v1"
}
] | 2020-06-26 | [
[
"Lebed",
"Andrei G.",
""
]
] | We review our recent theoretical results about inequivalence between passive gravitational mass and energy for a composite quantum body at a macroscopic level. In particular, we consider macroscopic ensembles of the simplest composite quantum bodies - hydrogen atoms. Our results are as follows. For the most ensembles, ... |
1703.04205 | Bahram Mashhoon | C. Chicone and B. Mashhoon | Cosmological Implications of Nonlocal Gravity | 51 pages, 6 figures. Dedicated to Friedrich W. Hehl in honor of his
80th birthday | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present extensions of the treatment contained in our recent paper on
nonlocal Newtonian cosmology [C. Chicone and B. Mashhoon, J. Math. Phys. 57,
072501 (2016)]. That is, the implications of the recent nonlocal generalization
of Einstein's theory of gravitation are further investigated within the regime
of Newtoni... | [
{
"created": "Mon, 13 Mar 2017 00:32:10 GMT",
"version": "v1"
}
] | 2017-03-14 | [
[
"Chicone",
"C.",
""
],
[
"Mashhoon",
"B.",
""
]
] | We present extensions of the treatment contained in our recent paper on nonlocal Newtonian cosmology [C. Chicone and B. Mashhoon, J. Math. Phys. 57, 072501 (2016)]. That is, the implications of the recent nonlocal generalization of Einstein's theory of gravitation are further investigated within the regime of Newtonian... |
1201.5041 | Aur\'elien Hees | A. Hees, B. Lamine, S. Reynaud, M.-T. Jaekel, C. Le Poncin-Lafitte, V.
Lainey, A. F\"uzfa, J.-M. Courty, V. Dehant, P. Wolf | Radioscience simulations in General Relativity and in alternative
theories of gravity | 27 pages, 7 figures, minor changes, accepted version | Class. Quantum Grav. 29 235027, 2012 | 10.1088/0264-9381/29/23/235027 | null | gr-qc astro-ph.IM physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we focus on the possibility to test General Relativity in the
Solar System with radioscience measurements. To this aim, we present a new
software that simulates Range and Doppler signals directly from the space-time
metric. This flexible approach allows one to perform simulations in General
Relativity ... | [
{
"created": "Tue, 24 Jan 2012 16:47:50 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Jun 2012 14:14:44 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Nov 2012 13:08:40 GMT",
"version": "v3"
}
] | 2012-11-30 | [
[
"Hees",
"A.",
""
],
[
"Lamine",
"B.",
""
],
[
"Reynaud",
"S.",
""
],
[
"Jaekel",
"M. -T.",
""
],
[
"Poncin-Lafitte",
"C. Le",
""
],
[
"Lainey",
"V.",
""
],
[
"Füzfa",
"A.",
""
],
[
"Courty",
"J.... | In this paper, we focus on the possibility to test General Relativity in the Solar System with radioscience measurements. To this aim, we present a new software that simulates Range and Doppler signals directly from the space-time metric. This flexible approach allows one to perform simulations in General Relativity an... |
1803.00365 | Jianbo Lu | Jianbo Lu, Yabo Wu, Weiqiang Yang, Molin Liu, Xin Zhao | The generalized Brans-Dicke theory and its cosmology | 10 pages,4 figures | Eur. Phys. J. Plus (2019) 134: 318 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A generalized Brans-Dicke (GBD) theory is proposed and studied in this paper.
The interesting property has been found in the GBD theory, for example it can
naturally solve the problem of \gamma value emerging in f(R) modified gravity
without introducing the so-called chameleon mechanism. In addition, it can be
found ... | [
{
"created": "Thu, 1 Mar 2018 13:53:23 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Apr 2018 14:38:39 GMT",
"version": "v2"
},
{
"created": "Sat, 19 May 2018 02:44:16 GMT",
"version": "v3"
},
{
"created": "Fri, 5 Jul 2019 06:15:20 GMT",
"version": "v4"
}
] | 2019-07-08 | [
[
"Lu",
"Jianbo",
""
],
[
"Wu",
"Yabo",
""
],
[
"Yang",
"Weiqiang",
""
],
[
"Liu",
"Molin",
""
],
[
"Zhao",
"Xin",
""
]
] | A generalized Brans-Dicke (GBD) theory is proposed and studied in this paper. The interesting property has been found in the GBD theory, for example it can naturally solve the problem of \gamma value emerging in f(R) modified gravity without introducing the so-called chameleon mechanism. In addition, it can be found th... |
2107.10730 | Feng-Li Lin | Han-Shiang Kuo, Feng-Li Lin | Conditional Noise Deep Learning for Parameter Estimation of
Gravitational Wave Events | 12 pages, 18 figures; v2 minor changes; v2 adopt a new ASD model to
accommodate large ASD variations, and redo the PE analysis accordingly. Main
conclusion remains | null | 10.1103/PhysRevD.105.044016 | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | We construct a Bayesian inference deep learning machine for parameter
estimation of gravitational wave events of binaries of black hole coalescence.
The structure of our deep Bayesian machine adopts the conditional variational
autoencoder scheme by conditioning on both the gravitational wave strains and
the variation... | [
{
"created": "Thu, 22 Jul 2021 15:10:42 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Aug 2021 10:04:20 GMT",
"version": "v2"
},
{
"created": "Sun, 28 Nov 2021 09:15:36 GMT",
"version": "v3"
}
] | 2022-02-23 | [
[
"Kuo",
"Han-Shiang",
""
],
[
"Lin",
"Feng-Li",
""
]
] | We construct a Bayesian inference deep learning machine for parameter estimation of gravitational wave events of binaries of black hole coalescence. The structure of our deep Bayesian machine adopts the conditional variational autoencoder scheme by conditioning on both the gravitational wave strains and the variations ... |
gr-qc/9604024 | Takahiro Masuda | Takahiro Masuda, Hisao Suzuki | Integral Equations of Fields on the Rotating Black Hole | 14 pages, LaTeX, no figures | J.Math.Phys. 38 (1997) 3669-3678 | 10.1063/1.532060 | EPHOU 96-002 | gr-qc | null | It is known that the radial equation of the massless fields with spin around
Kerr black holes cannot be solved by special functions. Recently, the analytic
solution was obtained by use of the expansion in terms of the special functions
and various astrophysical application have been discussed. It was pointed out
that... | [
{
"created": "Thu, 11 Apr 1996 07:38:55 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Masuda",
"Takahiro",
""
],
[
"Suzuki",
"Hisao",
""
]
] | It is known that the radial equation of the massless fields with spin around Kerr black holes cannot be solved by special functions. Recently, the analytic solution was obtained by use of the expansion in terms of the special functions and various astrophysical application have been discussed. It was pointed out that t... |
gr-qc/9705086 | Benjamin C. Harms | R. Casadio, B. Harms, Y. Leblanc (Dept. of Physics, the University of
Alabama) and P.H. Cox (Physics Dept., Texas A&M University-Kingsville) | Perturbations in the Kerr-Newman Dilatonic Black Hole Background: I.
Maxwell waves | RevTeX, 36 pages in preprint style, 1 figure posted as a separate PS
file, submitted to Phys. Rev. D | Phys.Rev.D56:4948-4961,1997 | 10.1103/PhysRevD.56.4948 | UAHEP976 | gr-qc hep-th | null | In this paper we analyze the perturbations of the Kerr-Newman dilatonic black
hole background. For this purpose we perform a double expansion in both the
background electric charge and the wave parameters of the relevant quantities
in the Newman-Penrose formalism. We then display the gravitational, dilatonic
and elec... | [
{
"created": "Fri, 30 May 1997 22:56:24 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Casadio",
"R.",
"",
"Dept. of Physics, the University of\n Alabama"
],
[
"Harms",
"B.",
"",
"Dept. of Physics, the University of\n Alabama"
],
[
"Leblanc",
"Y.",
"",
"Dept. of Physics, the University of\n Alabama"
],
[
"Cox",
"P. H.",
"",... | In this paper we analyze the perturbations of the Kerr-Newman dilatonic black hole background. For this purpose we perform a double expansion in both the background electric charge and the wave parameters of the relevant quantities in the Newman-Penrose formalism. We then display the gravitational, dilatonic and electr... |
1207.7176 | Paola Leaci Dr. | J. Aasi, J. Abadie, B. P. Abbott, R. Abbott, T. D. Abbott, M.
Abernathy, T. Accadia, F. Acernese, C. Adams, T. Adams, P. Addesso, R.
Adhikari, C. Affeldt, M. Agathos, K. Agatsuma, P. Ajith, B. Allen, A.
Allocca, E. Amador Ceron, D. Amariutei, S. B. Anderson, W. G. Anderson, K.
Arai, M. C. Araya, S. Ast, S. M. A... | Einstein@Home all-sky search for periodic gravitational waves in LIGO S5
data | 29 pages, 14 figures, 6 tables. Science summary page at
http://www.ligo.org/science/Publication-FullS5EatH/index.php ; Public access
area to figures and tables at
https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=p1200026 | Phys. Rev. D 87, 042001 (2013) | 10.1103/PhysRevD.87.042001 | LIGO-P1200026 | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper presents results of an all-sky searches for periodic gravitational
waves in the frequency range [50, 1190] Hz and with frequency derivative ranges
of [-2 x 10^-9, 1.1 x 10^-10] Hz/s for the fifth LIGO science run (S5). The
novelty of the search lies in the use of a non-coherent technique based on the
Hough... | [
{
"created": "Tue, 31 Jul 2012 07:11:10 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Aug 2012 11:12:58 GMT",
"version": "v2"
}
] | 2013-02-15 | [
[
"Aasi",
"J.",
"",
"The LIGO Scientific Collaboration and the Virgo Collaboration"
],
[
"Abadie",
"J.",
"",
"The LIGO Scientific Collaboration and the Virgo Collaboration"
],
[
"Abbott",
"B. P.",
"",
"The LIGO Scientific Collaboration and the Virgo Collaborat... | This paper presents results of an all-sky searches for periodic gravitational waves in the frequency range [50, 1190] Hz and with frequency derivative ranges of [-2 x 10^-9, 1.1 x 10^-10] Hz/s for the fifth LIGO science run (S5). The novelty of the search lies in the use of a non-coherent technique based on the Hough-t... |
1102.2253 | Jong-Ping Hsu | Jong-Ping Hsu | Quantum Yang-Mills gravity in flat space-time and effective curved
space-time for motions of classical objects | 20 pages, to be published in "The European Physical Journal -
Plus"(2011). The final publication is available at http://www.epj.org | Eur.Phys.J.Plus 126:24,2011 | 10.1140/epjp/i2011-11024-x | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Yang-Mills gravity with translational gauge group T(4) in flat space-time
implies a simple self-coupling of gravitons and a truly conserved
energy-momentum tensor. Its consistency with experiments crucially depends on
an interesting property that an `effective Riemannian metric tensor' emerges in
and only in the geom... | [
{
"created": "Thu, 10 Feb 2011 22:38:39 GMT",
"version": "v1"
}
] | 2011-04-20 | [
[
"Hsu",
"Jong-Ping",
""
]
] | Yang-Mills gravity with translational gauge group T(4) in flat space-time implies a simple self-coupling of gravitons and a truly conserved energy-momentum tensor. Its consistency with experiments crucially depends on an interesting property that an `effective Riemannian metric tensor' emerges in and only in the geomet... |
2103.05598 | Vladimir Khatsymovsky | V.M. Khatsymovsky | On the discrete version of the Kerr geometry | 34 pages, 3 figures | Int. J. Mod. Phys. A, Volume No. 36, Issue No. 20, Article No.
2150130, Year 2021 | 10.1142/S0217751X2150130X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Kerr type solution in the Regge calculus is considered. It is assumed that
the discrete general relativity, the Regge calculus, is quantized within the
path integral approach. The only consequence of this approach used here is the
existence of a length scale at which edge lengths are loosely fixed, as
considered in... | [
{
"created": "Tue, 9 Mar 2021 18:18:16 GMT",
"version": "v1"
}
] | 2021-08-26 | [
[
"Khatsymovsky",
"V. M.",
""
]
] | A Kerr type solution in the Regge calculus is considered. It is assumed that the discrete general relativity, the Regge calculus, is quantized within the path integral approach. The only consequence of this approach used here is the existence of a length scale at which edge lengths are loosely fixed, as considered in o... |
1107.2678 | Steven Carlip | Steven Carlip | Effective Conformal Descriptions of Black Hole Entropy | 27 pages; solicited review article, to appear in Entropy | Entropy 2011, 13(7), 1355-1379 | 10.3390/e13071355 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is no longer considered surprising that black holes have temperatures and
entropies. What remains surprising, though, is the universality of these
thermodynamic properties: their exceptionally simple and general form, and the
fact that they can be derived from many very different descriptions of the
underlying mic... | [
{
"created": "Wed, 13 Jul 2011 21:03:17 GMT",
"version": "v1"
}
] | 2012-01-04 | [
[
"Carlip",
"Steven",
""
]
] | It is no longer considered surprising that black holes have temperatures and entropies. What remains surprising, though, is the universality of these thermodynamic properties: their exceptionally simple and general form, and the fact that they can be derived from many very different descriptions of the underlying micro... |
gr-qc/0312038 | Vladimir Dzhunushaliev | V. Dzhunushaliev | Strings and Branes under Microscope | comparison with known solutions is added | Annalen Phys. 15 (2006) 671-677 | 10.1002/andp.200610208 | null | gr-qc hep-th | null | It is shown that in the standard vacuum 5D Kaluza-Klein gravity there is
wormhole-like solutions which look like strings attached to two D-branes. The
asymptotical behaviour of the corresponding metric is investigated.
| [
{
"created": "Sun, 7 Dec 2003 07:51:18 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Jul 2004 02:07:17 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Dzhunushaliev",
"V.",
""
]
] | It is shown that in the standard vacuum 5D Kaluza-Klein gravity there is wormhole-like solutions which look like strings attached to two D-branes. The asymptotical behaviour of the corresponding metric is investigated. |
gr-qc/9906040 | Soeren Holst | Ingemar Bengtsson, Soeren Holst (Fysikum, Stockholms Universitet) | De Sitter Space and Spatial Topology | 21 pages, 7 figures | Class.Quant.Grav. 16 (1999) 3735-3748 | 10.1088/0264-9381/16/11/318 | USITP 99-4 | gr-qc | null | Morrow-Jones and Witt have shown that generic spatial topologies admit
initial data that evolve to locally de Sitter spacetimes under Einstein's
equations. We simplify their arguments, make them a little more general, and
solve for the global time evolution of the wormhole initial data considered by
them. Finally we ... | [
{
"created": "Fri, 11 Jun 1999 13:24:45 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Bengtsson",
"Ingemar",
"",
"Fysikum, Stockholms Universitet"
],
[
"Holst",
"Soeren",
"",
"Fysikum, Stockholms Universitet"
]
] | Morrow-Jones and Witt have shown that generic spatial topologies admit initial data that evolve to locally de Sitter spacetimes under Einstein's equations. We simplify their arguments, make them a little more general, and solve for the global time evolution of the wormhole initial data considered by them. Finally we gi... |
0801.2453 | Valery Kiselev | V. V. Kiselev, S. A. Timofeev | Quasiattractor dynamics of lambda-phi^4-inflation | 8 pages, 3 figures, revtex class, absract and conclusion modified,
equation (67) and its dicussion added in section III.B.1, minor edition of
introduction and section III.B.2 performed | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | At high e-foldings of expansion, the inflation with the quartic potential
exhibits the parametric attractor governed by the slowly running Hubble rate.
This quasiattractor simplifies the analysis of predictions for the
inhomogeneity generated by the quantum fluctuations of inflaton. The method
reveals the connection ... | [
{
"created": "Wed, 16 Jan 2008 08:50:55 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jan 2008 12:17:10 GMT",
"version": "v2"
},
{
"created": "Wed, 11 Jun 2008 06:11:41 GMT",
"version": "v3"
}
] | 2008-06-11 | [
[
"Kiselev",
"V. V.",
""
],
[
"Timofeev",
"S. A.",
""
]
] | At high e-foldings of expansion, the inflation with the quartic potential exhibits the parametric attractor governed by the slowly running Hubble rate. This quasiattractor simplifies the analysis of predictions for the inhomogeneity generated by the quantum fluctuations of inflaton. The method reveals the connection of... |
1007.4085 | Joseph Samuel | Diptarka Das | Geometric Entropy | 60 pages, Master's thesis | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The laws of mechanics of stationary black holes bear a close resemblance with
the laws of thermodynamics. This is not only a mathematical analogy but also a
physical one that helps us answer deep questions related to the thermodynamic
properties of the black holes. It turns out that we can define an entropy which
is ... | [
{
"created": "Fri, 23 Jul 2010 09:45:28 GMT",
"version": "v1"
}
] | 2010-07-26 | [
[
"Das",
"Diptarka",
""
]
] | The laws of mechanics of stationary black holes bear a close resemblance with the laws of thermodynamics. This is not only a mathematical analogy but also a physical one that helps us answer deep questions related to the thermodynamic properties of the black holes. It turns out that we can define an entropy which is pu... |
2405.20506 | Adrian Kent | Adrian Kent (Centre for Quantum Information and Foundations, DAMTP,
University of Cambridge and Perimeter Institute) | Do small massive superpositions necessarily significantly entangle with
gravity? | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Christodoulou and Rovelli (CR) [1] have argued that a Bose et
al.-Marletto-Vedral (BMV) experiment that confirmed the quantum nature of
gravity would give laboratory evidence for a quantum superposition of spacetime
geometries created in the course of the experiment. Hanif et al. [2] have
argued that mass interferome... | [
{
"created": "Thu, 30 May 2024 21:52:46 GMT",
"version": "v1"
}
] | 2024-06-03 | [
[
"Kent",
"Adrian",
"",
"Centre for Quantum Information and Foundations, DAMTP,\n University of Cambridge and Perimeter Institute"
]
] | Christodoulou and Rovelli (CR) [1] have argued that a Bose et al.-Marletto-Vedral (BMV) experiment that confirmed the quantum nature of gravity would give laboratory evidence for a quantum superposition of spacetime geometries created in the course of the experiment. Hanif et al. [2] have argued that mass interferomete... |
1709.03314 | Torsten Asselmeyer-Maluga | T. Asselmeyer-Maluga and J. Krol | How to obtain a cosmological constant from small exotic R^4 | 36 pages, 5 figures, substantial changes, the value of the
cosmological constant in agreement with measurements, accepted in Physics of
the Dark Universe | Physics of the Dark Universe Volume 19, March 2018, Pages 66-77 | 10.1016/j.dark.2017.12.002 | null | gr-qc hep-th math-ph math.GT math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we determine the cosmological constant as a topological
invariant by applying certain techniques from low dimensional differential
topology. We work with a small exotic $R^{4}$ which is embedded into the
standard $\mathbb{R}^{4}$. Any exotic $R^4$ is a Riemannian smooth manifold
with necessary non-vanis... | [
{
"created": "Mon, 11 Sep 2017 10:03:03 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Dec 2017 21:00:40 GMT",
"version": "v2"
}
] | 2018-12-20 | [
[
"Asselmeyer-Maluga",
"T.",
""
],
[
"Krol",
"J.",
""
]
] | In this paper we determine the cosmological constant as a topological invariant by applying certain techniques from low dimensional differential topology. We work with a small exotic $R^{4}$ which is embedded into the standard $\mathbb{R}^{4}$. Any exotic $R^4$ is a Riemannian smooth manifold with necessary non-vanishi... |
1201.2113 | Richard O'Shaughnessy | R. O'Shaughnessy (1), J. Healy (2), L. London (2), Z. Meeks (2), D.
Shoemaker (2) ((1) Center for Gravitation and Cosmology, University of
Wisconsin-Milwaukee, (2) Center for Relativistic Astrophysics, Georgia Tech) | Is J enough? Comparison of gravitational waves emitted along the total
angular momentum direction with other preferred orientations | v2 errata | null | 10.1103/PhysRevD.85.084003 | LIGO DCC P1100204 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational wave signature emitted from a merging binary depends on the
orientation of an observer relative to the binary. Previous studies suggest
that emission along the total initial or total final angular momenta leads to
both the strongest and simplest signal from a precessing compact binary. In
this paper... | [
{
"created": "Tue, 10 Jan 2012 17:09:17 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Aug 2012 00:23:30 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"O'Shaughnessy",
"R.",
""
],
[
"Healy",
"J.",
""
],
[
"London",
"L.",
""
],
[
"Meeks",
"Z.",
""
],
[
"Shoemaker",
"D.",
""
]
] | The gravitational wave signature emitted from a merging binary depends on the orientation of an observer relative to the binary. Previous studies suggest that emission along the total initial or total final angular momenta leads to both the strongest and simplest signal from a precessing compact binary. In this paper w... |
2405.01407 | Andrea Palessandro | Andrea Palessandro | Graviton-Photon Oscillations as a Probe of Quantum Gravity | 22 pages, no figures. v2: clarified discussion in section 2 | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The Gertsenshtein effect could in principle be used to detect a single
graviton by firing it through a region filled with a constant magnetic field
that enables its conversion to a photon, which can be efficiently detected via
standard techniques. The quantization of the gravitational field could then be
inferred ind... | [
{
"created": "Thu, 2 May 2024 15:58:40 GMT",
"version": "v1"
},
{
"created": "Wed, 29 May 2024 13:25:25 GMT",
"version": "v2"
}
] | 2024-05-30 | [
[
"Palessandro",
"Andrea",
""
]
] | The Gertsenshtein effect could in principle be used to detect a single graviton by firing it through a region filled with a constant magnetic field that enables its conversion to a photon, which can be efficiently detected via standard techniques. The quantization of the gravitational field could then be inferred indir... |
1903.03513 | Perseas Christodoulidis | Perseas Christodoulidis, Diederik Roest and Evangelos I. Sfakianakis | Attractors, Bifurcations and Curvature in Multi-field Inflation | 22 pages and 5 figures. Manifestly covariant form of the attractor
solution added, small changes to match JCAP version | null | 10.1088/1475-7516/2020/08/006 | Nikhef 2019-008 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent years have seen the introduction of various multi-field inflationary
scenarios in which the curvature and geodesics of the scalar manifold play a
crucial role. We outline a simple description that unifies these different
proposals and discuss their stability criteria. We demonstrate how the
underlying dynamics... | [
{
"created": "Thu, 28 Feb 2019 18:29:28 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Jun 2019 17:37:29 GMT",
"version": "v2"
},
{
"created": "Thu, 13 Aug 2020 00:04:19 GMT",
"version": "v3"
}
] | 2020-08-14 | [
[
"Christodoulidis",
"Perseas",
""
],
[
"Roest",
"Diederik",
""
],
[
"Sfakianakis",
"Evangelos I.",
""
]
] | Recent years have seen the introduction of various multi-field inflationary scenarios in which the curvature and geodesics of the scalar manifold play a crucial role. We outline a simple description that unifies these different proposals and discuss their stability criteria. We demonstrate how the underlying dynamics i... |
2307.08005 | Muhammad Sharif | M. Sharif and Amal Majid | Decoupled Quark Stars Relativistic Models in the Regime of
Self-interacting Brans-Dicke Gravity | 38 pages, 22 figures | Chinese J. Phys. 80(2022)285-304 | 10.1016/j.cjph.2022.09.022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we generate two static anisotropic solutions for a sphere
containing quark matter in the framework of self-interacting Brans-Dicke
theory. For this purpose, we add an anisotropic source in the seed distribution
and decouple the field equations through deformation in the radial metric
function. As a resu... | [
{
"created": "Thu, 13 Jul 2023 09:49:20 GMT",
"version": "v1"
}
] | 2023-07-26 | [
[
"Sharif",
"M.",
""
],
[
"Majid",
"Amal",
""
]
] | In this work, we generate two static anisotropic solutions for a sphere containing quark matter in the framework of self-interacting Brans-Dicke theory. For this purpose, we add an anisotropic source in the seed distribution and decouple the field equations through deformation in the radial metric function. As a result... |
gr-qc/9701028 | Philip Gibbs | Philip E. Gibbs | Covariant Energy-Momentum Conservation In General Relativity | 12 pages, postscript, no figures, references added | null | null | PEG-11-97 | gr-qc | null | A covariant formula for conserved currents of energy, momentum and
angular-momentum is derived from a general form of Noethers theorem applied
directly to the Einstein-Hilbert action of classical general relativity. Energy
conservation in a closed big-bang cosmology is discussed as a special case.
Special care is tak... | [
{
"created": "Wed, 8 Jan 1997 18:39:03 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Jan 1997 19:15:02 GMT",
"version": "v2"
},
{
"created": "Fri, 17 Jan 1997 20:44:16 GMT",
"version": "v3"
}
] | 2008-02-03 | [
[
"Gibbs",
"Philip E.",
""
]
] | A covariant formula for conserved currents of energy, momentum and angular-momentum is derived from a general form of Noethers theorem applied directly to the Einstein-Hilbert action of classical general relativity. Energy conservation in a closed big-bang cosmology is discussed as a special case. Special care is taken... |
2209.10981 | Neil Lu | Neil Lu, Karl Wette, Susan M. Scott and Andrew Melatos | Inferring neutron star properties with continuous gravitational waves | 11 pages, 4 figures. Accepted for publication in MNRAS | null | 10.1093/mnras/stad390 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Detection of continuous gravitational waves from rapidly-spinning neutron
stars opens up the possibility of examining their internal physics. We develop
a framework that leverages a future continuous gravitational wave detection to
infer a neutron star's moment of inertia, equatorial ellipticity, and the
component of... | [
{
"created": "Thu, 22 Sep 2022 13:10:08 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jan 2023 02:34:37 GMT",
"version": "v2"
}
] | 2023-02-15 | [
[
"Lu",
"Neil",
""
],
[
"Wette",
"Karl",
""
],
[
"Scott",
"Susan M.",
""
],
[
"Melatos",
"Andrew",
""
]
] | Detection of continuous gravitational waves from rapidly-spinning neutron stars opens up the possibility of examining their internal physics. We develop a framework that leverages a future continuous gravitational wave detection to infer a neutron star's moment of inertia, equatorial ellipticity, and the component of t... |
1309.2177 | Soon-Tae Hong | Soon-Tae Hong and Yeji Kim | Warp products and (2+1) dimensional spacetimes | 14 pages, to appear in General Relativity and Gravitation | null | 10.1007/s10714-014-1781-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the geometrical aspects of the extended (2+1) dimensional
Banados-Teitelboim-Zanelli spacetimes in the multiply warped product scheme. To
do this, we analyze the interior physical properties by constructing the
explicit warp functions in these regions.
| [
{
"created": "Mon, 9 Sep 2013 14:49:57 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Aug 2014 14:59:25 GMT",
"version": "v2"
}
] | 2014-08-11 | [
[
"Hong",
"Soon-Tae",
""
],
[
"Kim",
"Yeji",
""
]
] | We investigate the geometrical aspects of the extended (2+1) dimensional Banados-Teitelboim-Zanelli spacetimes in the multiply warped product scheme. To do this, we analyze the interior physical properties by constructing the explicit warp functions in these regions. |
1903.10902 | Carl Diether | Carl F. Diether III and Joy Christian | Existence of Matter as a Proof of the Existence of Gravitational Torsion | 5 pages, Essay submitted to the Gravity Research Foundation 2019
Awards for Essays on Gravitation. arXiv admin note: text overlap with
arXiv:1705.06036 | Prespacetime Journal 10 (2019) 610-614 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the reasons why Einstein-Cartan-Sciama-Kibble theory --- which
includes torsion due to the intrinsic spin of matter --- is not widely accepted
as a viable theory of gravity, is the lack of any experimental evidence for the
gravitational torsion. But at the heart of all matter are elementary fermions,
which are... | [
{
"created": "Sun, 24 Mar 2019 19:41:35 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jul 2019 01:42:10 GMT",
"version": "v2"
}
] | 2022-02-13 | [
[
"Diether",
"Carl F.",
"III"
],
[
"Christian",
"Joy",
""
]
] | One of the reasons why Einstein-Cartan-Sciama-Kibble theory --- which includes torsion due to the intrinsic spin of matter --- is not widely accepted as a viable theory of gravity, is the lack of any experimental evidence for the gravitational torsion. But at the heart of all matter are elementary fermions, which are m... |
1901.03970 | Davood Momeni Dr | Davood Momeni | Exact Classical and Quantum Solutions for a Covariant Oscillator Near
the Black Hole Horizon in Stueckelberg-Horwitz-Piron Theory | Accepted for publication in "Physics Letters A". This paper is
dedicated to Prof. Lawrence P. Horwitz. Major revised version, 9 pages, no
figure, letter | Physics Letters A 383 (2019) 1543-1548 | 10.1016/j.physleta.2019.02.023 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We found exact solutions for canonical classical and quantum dynamics for
general relativity in Horwitz general covarience theory. These solutions can be
obtained by solving the generalized geodesic equation and
Schr\"{o}dinger-Stueckelberg -Horwitz-Piron (SHP) wave equation for a simple
harmonic oscilator in the bac... | [
{
"created": "Sat, 5 Jan 2019 16:46:48 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Feb 2019 16:32:17 GMT",
"version": "v2"
}
] | 2019-04-10 | [
[
"Momeni",
"Davood",
""
]
] | We found exact solutions for canonical classical and quantum dynamics for general relativity in Horwitz general covarience theory. These solutions can be obtained by solving the generalized geodesic equation and Schr\"{o}dinger-Stueckelberg -Horwitz-Piron (SHP) wave equation for a simple harmonic oscilator in the backg... |
2210.09744 | Orlando Luongo | Michael R. R. Good, Alessio Lapponi, Orlando Luongo, Stefano Mancini | Modeling black hole evaporative mass evolution via radiation from moving
mirrors | 13 pages, 5 figures | Phys. Rev. D 107, 104004, (2023) | 10.1103/PhysRevD.107.104004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the evaporation of an uncharged and non-rotating black hole
(BH) in vacuum, by taking into account the effects given by the shrinking of
the horizon area. These include the back-reaction on the metric and other
smaller contributions arising from quantum fields in curved spacetime. Our
approach is facil... | [
{
"created": "Tue, 18 Oct 2022 10:48:57 GMT",
"version": "v1"
}
] | 2023-05-04 | [
[
"Good",
"Michael R. R.",
""
],
[
"Lapponi",
"Alessio",
""
],
[
"Luongo",
"Orlando",
""
],
[
"Mancini",
"Stefano",
""
]
] | We investigate the evaporation of an uncharged and non-rotating black hole (BH) in vacuum, by taking into account the effects given by the shrinking of the horizon area. These include the back-reaction on the metric and other smaller contributions arising from quantum fields in curved spacetime. Our approach is facilit... |
gr-qc/0508004 | Catherine Meusburger | C. Meusburger | Grafting and Poisson structure in (2+1)-gravity with vanishing
cosmological constant | 43 pages, 10 .eps figures; minor modifications: 2 figures added,
explanations added, typos corrected | Commun.Math.Phys. 266 (2006) 735-775 | 10.1007/s00220-006-0037-x | null | gr-qc hep-th math-ph math.MP | null | We relate the geometrical construction of (2+1)-spacetimes via grafting to
phase space and Poisson structure in the Chern-Simons formulation of
(2+1)-dimensional gravity with vanishing cosmological constant on manifolds of
topology $R\times S_g$, where $S_g$ is an orientable two-surface of genus
$g>1$. We show how gr... | [
{
"created": "Sun, 31 Jul 2005 15:32:21 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Jul 2006 00:33:46 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Meusburger",
"C.",
""
]
] | We relate the geometrical construction of (2+1)-spacetimes via grafting to phase space and Poisson structure in the Chern-Simons formulation of (2+1)-dimensional gravity with vanishing cosmological constant on manifolds of topology $R\times S_g$, where $S_g$ is an orientable two-surface of genus $g>1$. We show how graf... |
2305.04119 | Lorenzo Gavassino | Lorenzo Gavassino and Jorge Noronha | Relativistic Bulk Rheology: From Neutron Star Mergers to Viscous
Cosmology | 9 pages (Main Text) + 5 pages (Supplementary Material); 3 figures;
Published on Physical Review D, see
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.096040 | Phys. Rev. D 109, 096040 (May 2024) | 10.1103/PhysRevD.109.096040 | null | gr-qc nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop the first causal and stable theory of a bulk-viscous relativistic
pseudoplastic (or dilatant) fluid. This new formalism brings to light the
rheological properties of several relativistic physical systems. Neutron star
collisions can behave as a relativistic pseudoplastic material with viscous
properties di... | [
{
"created": "Sat, 6 May 2023 19:05:39 GMT",
"version": "v1"
},
{
"created": "Tue, 28 May 2024 19:59:15 GMT",
"version": "v2"
}
] | 2024-05-30 | [
[
"Gavassino",
"Lorenzo",
""
],
[
"Noronha",
"Jorge",
""
]
] | We develop the first causal and stable theory of a bulk-viscous relativistic pseudoplastic (or dilatant) fluid. This new formalism brings to light the rheological properties of several relativistic physical systems. Neutron star collisions can behave as a relativistic pseudoplastic material with viscous properties dict... |
1406.6049 | Jerome Quintin | Jerome Quintin, Yi-Fu Cai, Robert H. Brandenberger | Matter creation in a nonsingular bouncing cosmology | 14 pages, 2 figures. Replaced to match published version | Phys. Rev. D 90, 063507 (2014) | 10.1103/PhysRevD.90.063507 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine reheating in the two-field matter bounce cosmology. In this model,
the universe evolves from a matter-dominated phase of contraction to an
Ekpyrotic phase of contraction before the nonsingular bounce. The Ekpyrotic
phase frees the model from unwanted anisotropies, but leaves the universe cold
and empty of ... | [
{
"created": "Mon, 23 Jun 2014 20:00:01 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Sep 2014 17:41:09 GMT",
"version": "v2"
}
] | 2014-09-10 | [
[
"Quintin",
"Jerome",
""
],
[
"Cai",
"Yi-Fu",
""
],
[
"Brandenberger",
"Robert H.",
""
]
] | We examine reheating in the two-field matter bounce cosmology. In this model, the universe evolves from a matter-dominated phase of contraction to an Ekpyrotic phase of contraction before the nonsingular bounce. The Ekpyrotic phase frees the model from unwanted anisotropies, but leaves the universe cold and empty of pa... |
gr-qc/9910057 | Clifford M. Will | Clifford M. Will (Washington University, St. Louis) | Generation of Post-Newtonian Gravitational Radiation via Direct
Integration of the Relaxed Einstein Equations | 11 pages, PTPTeX, submitted to Proceedings of the Yukawa-Kyoto
International Seminar 99 | Prog.Theor.Phys.Suppl.136:158-167,1999 | 10.1143/PTPS.136.158 | null | gr-qc | null | The completion of a network of advanced laser-interferometric
gravitational-wave observatories around 2001 will make possible the study of
the inspiral and coalescence of binary systems of compact objects (neutron
stars and black holes), using gravitational radiation. To extract useful
information from the waves, suc... | [
{
"created": "Fri, 15 Oct 1999 20:24:18 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Will",
"Clifford M.",
"",
"Washington University, St. Louis"
]
] | The completion of a network of advanced laser-interferometric gravitational-wave observatories around 2001 will make possible the study of the inspiral and coalescence of binary systems of compact objects (neutron stars and black holes), using gravitational radiation. To extract useful information from the waves, such ... |
0809.2325 | Isabel Cordero-Carri\'on | Isabel Cordero-Carri\'on, Pablo Cerd\'a-Dur\'an, Harald Dimmelmeier,
Jos\'e Luis Jaramillo, J\'er\^ome Novak, Eric Gourgoulhon | Improved constrained scheme for the Einstein equations: An approach to
the uniqueness issue | 17 pages, 5 figures. Minor changes to be consistent with published
version | Phys.Rev.D79:024017,2009 | 10.1103/PhysRevD.79.024017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Uniqueness problems in the elliptic sector of constrained formulations of
Einstein equations have a dramatic effect on the physical validity of some
numerical solutions, for instance when calculating the spacetime of very
compact stars or nascent black holes. The fully constrained formulation (FCF)
proposed by Bonazz... | [
{
"created": "Sat, 13 Sep 2008 10:46:25 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Jan 2009 18:25:40 GMT",
"version": "v2"
}
] | 2009-02-26 | [
[
"Cordero-Carrión",
"Isabel",
""
],
[
"Cerdá-Durán",
"Pablo",
""
],
[
"Dimmelmeier",
"Harald",
""
],
[
"Jaramillo",
"José Luis",
""
],
[
"Novak",
"Jérôme",
""
],
[
"Gourgoulhon",
"Eric",
""
]
] | Uniqueness problems in the elliptic sector of constrained formulations of Einstein equations have a dramatic effect on the physical validity of some numerical solutions, for instance when calculating the spacetime of very compact stars or nascent black holes. The fully constrained formulation (FCF) proposed by Bonazzol... |
gr-qc/0307055 | Matthew Anderson | Matthew Anderson and Richard A. Matzner | Extended Lifetime in Computational Evolution of Isolated Black Holes | 20 pages, 6 figures | Found.Phys. 35 (2005) 1477-1495 | 10.1007/s10701-005-6477-x | null | gr-qc | null | Solving the 4-d Einstein equations as evolution in time requires solving
equations of two types: the four elliptic initial data (constraint) equations,
followed by the six second order evolution equations. Analytically the
constraint equations remain solved under the action of the evolution, and one
approach is to si... | [
{
"created": "Thu, 10 Jul 2003 18:11:39 GMT",
"version": "v1"
},
{
"created": "Sat, 31 Jul 2004 19:49:10 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Anderson",
"Matthew",
""
],
[
"Matzner",
"Richard A.",
""
]
] | Solving the 4-d Einstein equations as evolution in time requires solving equations of two types: the four elliptic initial data (constraint) equations, followed by the six second order evolution equations. Analytically the constraint equations remain solved under the action of the evolution, and one approach is to simp... |
1001.0213 | Wei-Tou Ni | Wei-Tou Ni | Testing Relativistic Gravity and Detecting Gravitational Waves in Space | 8 pages, 1 figure, invited presentation for the Ninth Asia-Pacific
International Conference on Gravitation and Astrophysics (ICGA9), Wuhan, June
28-July 3, 2009; for the proceedings to be published by World Scientific | null | 10.1142/9789814307673_0004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For testing gravity and detecting gravitational waves in space, deep-space
laser ranging using drag-free spacecraft is a common method. Deep space
provides a large arena and a long integration time. Laser technology provides
measurement sensitivity, while drag-free technology ensures that gravitational
phenomenon to ... | [
{
"created": "Fri, 1 Jan 2010 05:54:25 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Ni",
"Wei-Tou",
""
]
] | For testing gravity and detecting gravitational waves in space, deep-space laser ranging using drag-free spacecraft is a common method. Deep space provides a large arena and a long integration time. Laser technology provides measurement sensitivity, while drag-free technology ensures that gravitational phenomenon to be... |
2309.08496 | Rodrigo Maier | Rodrigo Maier | Particle Dynamics on Test Papapetrou Fields of Vacuum Spacetimes | null | Phys. Scr. 99 035016 (2024) | 10.1088/1402-4896/ad24a9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we examine the dynamics of particles subjected to test
Papapetrou fields of vacuum spacetimes. The staring point of our analysis is
based on fundamental electrodynamics which emerge from spacetime isometries of
a Kerr and Schwarzschild black holes. Taking into account Killing vectors which
satisfy Maxwe... | [
{
"created": "Fri, 15 Sep 2023 15:57:30 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Feb 2024 14:34:16 GMT",
"version": "v2"
}
] | 2024-02-14 | [
[
"Maier",
"Rodrigo",
""
]
] | In this paper we examine the dynamics of particles subjected to test Papapetrou fields of vacuum spacetimes. The staring point of our analysis is based on fundamental electrodynamics which emerge from spacetime isometries of a Kerr and Schwarzschild black holes. Taking into account Killing vectors which satisfy Maxwell... |
1812.04934 | Bertrand Chauvineau | Bertrand Chauvineau | A family of scalar-Einstein and vacuum Brans-Dicke axisymmetric
solutions | Submitted paper | Phys. Rev. D 100, 024051 (2019) | 10.1103/PhysRevD.100.024051 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new method is proposed, that establishes a one to one correspondance
between the whole set of static axially symmetric vacuum GR solutions and a
specific class of stationary axially symmetric scalar-Einstein solutions having
a given mass and a given angular momentum. The method explicitly takes
advantage of the Ker... | [
{
"created": "Wed, 12 Dec 2018 13:27:47 GMT",
"version": "v1"
}
] | 2019-07-31 | [
[
"Chauvineau",
"Bertrand",
""
]
] | A new method is proposed, that establishes a one to one correspondance between the whole set of static axially symmetric vacuum GR solutions and a specific class of stationary axially symmetric scalar-Einstein solutions having a given mass and a given angular momentum. The method explicitly takes advantage of the Kerr ... |
1106.0548 | Wenbiao Liu | Xiao-Xiong Zeng, Wen-Biao Liu | Hawking radiation via Landauer transport model | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Nation et al confirmed that fluxes of Hawking radiation energy and
entropy from a black hole can be regarded as a one-dimensional (1D) Landauer
transport process. Their work can be extended to background spacetimes with
gauge potential. The result shows that the energy flux, which is indicated to
be equal t... | [
{
"created": "Fri, 3 Jun 2011 01:41:07 GMT",
"version": "v1"
}
] | 2011-06-06 | [
[
"Zeng",
"Xiao-Xiong",
""
],
[
"Liu",
"Wen-Biao",
""
]
] | Recently, Nation et al confirmed that fluxes of Hawking radiation energy and entropy from a black hole can be regarded as a one-dimensional (1D) Landauer transport process. Their work can be extended to background spacetimes with gauge potential. The result shows that the energy flux, which is indicated to be equal to ... |
0811.1462 | Etera R. Livine | Etera R. Livine | Matrix Models as Non-commutative Field Theories on R^3 | 13 pages, v3: details added and title changed | Class. Quantum Grav. 26 (2009) 195014 | 10.1088/0264-9381/26/19/195014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of spin foam models for quantum gravity, group field theories
are a useful tool allowing on the one hand a non-perturbative formulation of
the partition function and on the other hand admitting an interpretation as
generalized matrix models. Focusing on 2d group field theories, we review their
explicit... | [
{
"created": "Mon, 10 Nov 2008 12:53:36 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Dec 2008 10:22:27 GMT",
"version": "v2"
},
{
"created": "Wed, 18 Nov 2009 13:47:54 GMT",
"version": "v3"
}
] | 2015-05-13 | [
[
"Livine",
"Etera R.",
""
]
] | In the context of spin foam models for quantum gravity, group field theories are a useful tool allowing on the one hand a non-perturbative formulation of the partition function and on the other hand admitting an interpretation as generalized matrix models. Focusing on 2d group field theories, we review their explicit r... |
1404.6396 | Salvatore Mignemi | S. Mignemi and R. Strajn | Snyder dynamics in a Schwarzschild spacetime | 7 pages | null | 10.1103/PhysRevD.90.044019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the orbits of a particle in Schwarzschild spacetime, assuming
that the dynamics is governed by a Snyder symplectic structure. With this
assumption, the perihelion shift of the planets acquires an additional
contribution with respect to the one predicted by general relativity. Moreover,
the equivalence pr... | [
{
"created": "Fri, 25 Apr 2014 11:11:11 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Mignemi",
"S.",
""
],
[
"Strajn",
"R.",
""
]
] | We calculate the orbits of a particle in Schwarzschild spacetime, assuming that the dynamics is governed by a Snyder symplectic structure. With this assumption, the perihelion shift of the planets acquires an additional contribution with respect to the one predicted by general relativity. Moreover, the equivalence prin... |
1806.11168 | Andrea Giugno | Andrea Giugno and Andrea Giusti | Domestic Corpuscular Inflaton | 14 pages, no figures | null | 10.1142/S0219887819501081 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The aim of this paper is to provide a more precise description of the
paradigm of corpuscular slow-roll inflation, which was previously introduced by
Casadio et al. in [1]. Specifically, we start by expanding the Starobinsky
theory on a curved background and then infer the number and nature of the
propagating degrees... | [
{
"created": "Thu, 28 Jun 2018 20:13:33 GMT",
"version": "v1"
}
] | 2019-09-04 | [
[
"Giugno",
"Andrea",
""
],
[
"Giusti",
"Andrea",
""
]
] | The aim of this paper is to provide a more precise description of the paradigm of corpuscular slow-roll inflation, which was previously introduced by Casadio et al. in [1]. Specifically, we start by expanding the Starobinsky theory on a curved background and then infer the number and nature of the propagating degrees o... |
2111.01765 | Marco Bruni | Marco Bruni, Rodrigo Maier and David Wands | Nonsingular Cosmology from an Interacting Vacuum | 14 pages, 15 figures. Updated to reflect the published version | Physical Review D 105, 063532 (2022) | 10.1103/PhysRevD.105.063532 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We examine the dynamics of FLRW cosmologies in which the vacuum interacts
with a perfect fluid through an energy exchange, focusing on the exploration of
nonsingular configurations, including cyclic and bouncing models. We consider
two specific choices for the energy transfer. In the first case, the energy
transfer i... | [
{
"created": "Tue, 2 Nov 2021 17:40:21 GMT",
"version": "v1"
},
{
"created": "Wed, 4 May 2022 18:36:09 GMT",
"version": "v2"
}
] | 2022-05-06 | [
[
"Bruni",
"Marco",
""
],
[
"Maier",
"Rodrigo",
""
],
[
"Wands",
"David",
""
]
] | We examine the dynamics of FLRW cosmologies in which the vacuum interacts with a perfect fluid through an energy exchange, focusing on the exploration of nonsingular configurations, including cyclic and bouncing models. We consider two specific choices for the energy transfer. In the first case, the energy transfer is ... |
0704.2585 | Gil de Oliveira-Neto | G. A. Monerat, G. Oliveira-Neto, E. V. Corr\^ea Silva, L. G. Ferreira
Filho, P. Romildo Jr., J. C. Fabris, R. Fracalossi, F. G. Alvarenga, S. V. B.
Gon\c{c}alves | The dynamics of the early universe and the initial conditions for
inflation in a model with radiation and a Chaplygin gas | Revtex file with 12 pages and 6 PS figures | Phys.Rev.D76:024017,2007 | 10.1103/PhysRevD.76.024017 | null | gr-qc | null | The modeling of the early universe is done through the quantization of a
Friedmann-Robertson-Walker model with positive curvature. The material content
consists of two fluids: radiation and Chaplygin gas. The quantization of these
models is made by following the Wheeler and DeWitt's prescriptions. Using the
Schutz fo... | [
{
"created": "Thu, 19 Apr 2007 18:39:52 GMT",
"version": "v1"
}
] | 2016-03-28 | [
[
"Monerat",
"G. A.",
""
],
[
"Oliveira-Neto",
"G.",
""
],
[
"Silva",
"E. V. Corrêa",
""
],
[
"Filho",
"L. G. Ferreira",
""
],
[
"Romildo",
"P.",
"Jr."
],
[
"Fabris",
"J. C.",
""
],
[
"Fracalossi",
"R.",
""
... | The modeling of the early universe is done through the quantization of a Friedmann-Robertson-Walker model with positive curvature. The material content consists of two fluids: radiation and Chaplygin gas. The quantization of these models is made by following the Wheeler and DeWitt's prescriptions. Using the Schutz form... |
1102.5320 | Carlos Augusto Romero Filho | C. Romero, J. B. Formiga and C. Dariescu | Fermion confinement induced by geometry | 8 pages | null | 10.1134/S0202289311030066 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a five-dimensional model in which fermions are confined in a
hypersurface due to an interaction with a purely geometric field. Inspired by
the Rubakov-Shaposhnikov field-theoretical model, in which massless fermions
can be localized in a domain wall through the interaction of a scalar field, we
show that ... | [
{
"created": "Fri, 25 Feb 2011 19:49:34 GMT",
"version": "v1"
}
] | 2015-05-27 | [
[
"Romero",
"C.",
""
],
[
"Formiga",
"J. B.",
""
],
[
"Dariescu",
"C.",
""
]
] | We consider a five-dimensional model in which fermions are confined in a hypersurface due to an interaction with a purely geometric field. Inspired by the Rubakov-Shaposhnikov field-theoretical model, in which massless fermions can be localized in a domain wall through the interaction of a scalar field, we show that pa... |
1402.7155 | Rafael M. Rubio | Rafael M. Rubio, Juan J. Salamanca | The Friedmann cosmological models revisited as an harmonic motion and
new exact solutions | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new approach for arbitrary dimension to the Friedmann cosmological models
is presented. Taking suitable changes of the parameters of the spacetime the
harmonic motion equations appear, where the curvature determines the angular
frequency. Some physical interpretations are also explained. As a consequence
of our app... | [
{
"created": "Fri, 28 Feb 2014 07:38:03 GMT",
"version": "v1"
}
] | 2014-03-03 | [
[
"Rubio",
"Rafael M.",
""
],
[
"Salamanca",
"Juan J.",
""
]
] | A new approach for arbitrary dimension to the Friedmann cosmological models is presented. Taking suitable changes of the parameters of the spacetime the harmonic motion equations appear, where the curvature determines the angular frequency. Some physical interpretations are also explained. As a consequence of our appro... |
1508.06344 | Jose Ademir Sales Lima | G. J. M. Zilioti and R. C. Santos and J. A. S. Lima | From de Sitter to de Sitter: decaying vacuum models as a possible
solution to the main cosmological problems | 7 pages, 2 figures, title changed, typos corrected, text and new
references added | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Decaying vacuum cosmological models evolving smoothly between two extreme
(very early and late time) de Sitter phases are capable to solve or at least to
alleviate some cosmological puzzles, among them: (i) the singularity, (ii)
horizon, (iii) graceful-exit from inflation, and (iv) the baryogenesis problem.
Our basic... | [
{
"created": "Wed, 26 Aug 2015 02:01:02 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Jul 2018 12:30:57 GMT",
"version": "v2"
}
] | 2018-07-26 | [
[
"Zilioti",
"G. J. M.",
""
],
[
"Santos",
"R. C.",
""
],
[
"Lima",
"J. A. S.",
""
]
] | Decaying vacuum cosmological models evolving smoothly between two extreme (very early and late time) de Sitter phases are capable to solve or at least to alleviate some cosmological puzzles, among them: (i) the singularity, (ii) horizon, (iii) graceful-exit from inflation, and (iv) the baryogenesis problem. Our basic a... |
2104.11297 | Malcolm MacCallum | M. A. H. MacCallum | Spacetimes with continuous linear isotropies I: spatial rotations | Accepted for General Relativity and Gravitation. In press. Title was
amended. This v2 is the 'author's accepted manuscript' version | null | 10.1007/s10714-021-02829-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The weakest known criterion for local rotational symmetry (LRS) in spacetimes
of Petrov type D is due to Goode and Wainwright (1986). Here it is shown, using
methods related to the Cartan-Karlhede procedure, to be equivalent to local
spatial rotation invariance of the Riemann tensor and its first derivatives.
Conform... | [
{
"created": "Thu, 22 Apr 2021 19:43:55 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Jun 2021 20:34:06 GMT",
"version": "v2"
}
] | 2021-06-23 | [
[
"MacCallum",
"M. A. H.",
""
]
] | The weakest known criterion for local rotational symmetry (LRS) in spacetimes of Petrov type D is due to Goode and Wainwright (1986). Here it is shown, using methods related to the Cartan-Karlhede procedure, to be equivalent to local spatial rotation invariance of the Riemann tensor and its first derivatives. Conformal... |
1606.05849 | F\'elix Juli\'e | Andr\'es Anabal\'on, Nathalie Deruelle, F\'elix-Louis Juli\'e | Einstein-Katz action, variational principle, Noether charges and the
thermodynamics of AdS-black holes | Accepted for publication by JHEP | null | 10.1007/JHEP08(2016)049 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we describe 4-dimensional gravity coupled to scalar and Maxwell
fields by the Einstein-Katz action, that is, the covariant version of the
"Gamma-Gamma $-$ Gamma-Gamma" part of the Hilbert action supplemented by the
divergence of a generalized "Katz vector". We consider static solutions of
Einstein's equ... | [
{
"created": "Sun, 19 Jun 2016 09:24:54 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Aug 2016 12:54:16 GMT",
"version": "v2"
}
] | 2016-08-24 | [
[
"Anabalón",
"Andrés",
""
],
[
"Deruelle",
"Nathalie",
""
],
[
"Julié",
"Félix-Louis",
""
]
] | In this paper we describe 4-dimensional gravity coupled to scalar and Maxwell fields by the Einstein-Katz action, that is, the covariant version of the "Gamma-Gamma $-$ Gamma-Gamma" part of the Hilbert action supplemented by the divergence of a generalized "Katz vector". We consider static solutions of Einstein's equat... |
2210.05934 | Keiko Kokeyama | T. Akutsu, M. Ando, K. Arai, Y. Arai, S. Araki, A. Araya, N. Aritomi,
H. Asada, Y. Aso, S. Bae, Y. Bae, L. Baiotti, R. Bajpai, M. A. Barton, K.
Cannon, Z. Cao, E. Capocasa, M. Chan, C. Chen, K. Chen, Y. Chen, C-I. Chiang,
H. Chu, Y-K. Chu, S. Eguchi, Y. Enomoto, R. Flaminio, Y. Fujii, Y. Fujikawa,
M. Fukunaga, ... | Input optics systems of the KAGRA detector during O3GK | null | null | null | null | gr-qc physics.ins-det | http://creativecommons.org/licenses/by/4.0/ | KAGRA, the underground and cryogenic gravitational-wave detector, was
operated for its solo observation from February 25th to March 10th, 2020, and
its first joint observation with the GEO 600 detector from April 7th -- 21st,
2020 (O3GK). This study presents an overview of the input optics systems of the
KAGRA detect... | [
{
"created": "Wed, 12 Oct 2022 05:45:55 GMT",
"version": "v1"
}
] | 2022-10-13 | [
[
"Akutsu",
"T.",
"",
"The KAGRA Collaboration"
],
[
"Ando",
"M.",
"",
"The KAGRA Collaboration"
],
[
"Arai",
"K.",
"",
"The KAGRA Collaboration"
],
[
"Arai",
"Y.",
"",
"The KAGRA Collaboration"
],
[
"Araki",
"S.",
"",
"... | KAGRA, the underground and cryogenic gravitational-wave detector, was operated for its solo observation from February 25th to March 10th, 2020, and its first joint observation with the GEO 600 detector from April 7th -- 21st, 2020 (O3GK). This study presents an overview of the input optics systems of the KAGRA detector... |
0811.4160 | Adam Henderson | Abhay Ashtekar, Adam Henderson, and David Sloan | Hamiltonian General Relativity and the Belinskii, Khalatnikov, Lifshitz
Conjecture | 10 pages, 2 figures. Issue of "spikes" clarified in section IV. One
reference added | Class.Quant.Grav.26:052001,2009 | 10.1088/0264-9381/26/5/052001 | IGC-08/11-6 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Belinkskii, Khalatnikov and Lifshitz conjecture says that as one
approaches space-like singularities in general relativity, 'time derivatives
dominate over spatial derivatives' so that the dynamics at any spatial point is
well captured by an ordinary differential equation. By now considerable
evidence has accumul... | [
{
"created": "Tue, 25 Nov 2008 19:13:21 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Jan 2009 21:29:42 GMT",
"version": "v2"
}
] | 2009-06-10 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Henderson",
"Adam",
""
],
[
"Sloan",
"David",
""
]
] | The Belinkskii, Khalatnikov and Lifshitz conjecture says that as one approaches space-like singularities in general relativity, 'time derivatives dominate over spatial derivatives' so that the dynamics at any spatial point is well captured by an ordinary differential equation. By now considerable evidence has accumulat... |
0705.0459 | Dr. Anirudh Pradhan | J. P. Singh, A. Pradhan and A. K. Singh | Bianchi Type-I Cosmological Models with Variable G and 4\Lambda$-Terms
in General Relativity | 12 pages, no figure | Astrophys.SpaceSci.314:83-88,2008 | 10.1007/s10509-008-9742-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein's field equations with variable gravitational and cosmological
``constant'' are considered in presence of perfect fluid for Bianchi type-I
spacetime. Consequences of the four cases of the phenomenological decay of
$\Lambda$ have been discussed which are consistent with observations. The
physical significance... | [
{
"created": "Thu, 3 May 2007 13:29:08 GMT",
"version": "v1"
},
{
"created": "Sat, 26 Jul 2008 16:04:46 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Singh",
"J. P.",
""
],
[
"Pradhan",
"A.",
""
],
[
"Singh",
"A. K.",
""
]
] | Einstein's field equations with variable gravitational and cosmological ``constant'' are considered in presence of perfect fluid for Bianchi type-I spacetime. Consequences of the four cases of the phenomenological decay of $\Lambda$ have been discussed which are consistent with observations. The physical significance o... |
2306.09596 | Richard Woodard | R. P. Woodard (University of Florida) | Don't Throw the Baby Out with the Bath Water | 35 pages, 1 figure, uses LaTeX2e | null | null | UFIFT-QG-23-06 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | I stress the importance of retaining a healthy classical limit while we
search for an ultraviolet completion to quantum gravity. A key problem with
negative-norm quantizations of higher derivative Lagrangians is that their
classical limits do not correspond to real-valued metrics evolving in a
real-valued spacetime. ... | [
{
"created": "Fri, 16 Jun 2023 02:48:12 GMT",
"version": "v1"
}
] | 2023-06-19 | [
[
"Woodard",
"R. P.",
"",
"University of Florida"
]
] | I stress the importance of retaining a healthy classical limit while we search for an ultraviolet completion to quantum gravity. A key problem with negative-norm quantizations of higher derivative Lagrangians is that their classical limits do not correspond to real-valued metrics evolving in a real-valued spacetime. I ... |
1708.02627 | Celio Muniz | V. B. Bezerra, H. F. Mota, and C. R. Muniz | Casimir Effect in the Rainbow Einstein's Universe | 15 pages, 1 figure. To appear in Europhysics Letters | null | 10.1209/0295-5075/120/10005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper we investigate the effects caused by the modification of
the dispersion relation obtained by solving the Klein-Gordon equation in the
closed Einstein's universe in the context of rainbow's gravity models. Thus, we
analyse how the quantum vacuum fluctuations of the scalar field are modified
when c... | [
{
"created": "Tue, 8 Aug 2017 19:52:09 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Nov 2017 18:51:29 GMT",
"version": "v2"
}
] | 2018-01-17 | [
[
"Bezerra",
"V. B.",
""
],
[
"Mota",
"H. F.",
""
],
[
"Muniz",
"C. R.",
""
]
] | In the present paper we investigate the effects caused by the modification of the dispersion relation obtained by solving the Klein-Gordon equation in the closed Einstein's universe in the context of rainbow's gravity models. Thus, we analyse how the quantum vacuum fluctuations of the scalar field are modified when com... |
2406.15550 | Bryce Cousins | Bryce Cousins, Arnab Dhani, Bangalore S. Sathyaprakash, Nicol\'as
Yunes | Finding cosmic anisotropy with networks of next-generation
gravitational-wave detectors | 18 pages, 9 figures | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | The standard cosmological model involves the assumption of isotropy and
homogeneity, a principle that is generally well-motivated but is now in
conflict with various anisotropies found using independent astrophysical
probes. These anisotropies tend to take the form of dipoles; while some can be
explained by simple ki... | [
{
"created": "Fri, 21 Jun 2024 18:00:01 GMT",
"version": "v1"
}
] | 2024-06-25 | [
[
"Cousins",
"Bryce",
""
],
[
"Dhani",
"Arnab",
""
],
[
"Sathyaprakash",
"Bangalore S.",
""
],
[
"Yunes",
"Nicolás",
""
]
] | The standard cosmological model involves the assumption of isotropy and homogeneity, a principle that is generally well-motivated but is now in conflict with various anisotropies found using independent astrophysical probes. These anisotropies tend to take the form of dipoles; while some can be explained by simple kine... |
1404.3696 | Steven Carlip | S. Carlip and H. Gomes | Lorentz Invariance in Shape Dynamics | v2: discussion of light cone structure added; minor typos fixed; 14
pages | Class. Quantum Grav. 32, 2015 | 10.1088/0264-9381/32/1/015021 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Shape dynamics is a reframing of canonical general relativity in which time
reparametrization invariance is "traded" for a local conformal invariance. We
explore the emergence of Lorentz invariance in this model in three contexts: as
a maximal symmetry, an asymptotic symmetry, and a local invariance.
| [
{
"created": "Mon, 14 Apr 2014 18:55:56 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Jul 2014 22:21:49 GMT",
"version": "v2"
}
] | 2015-04-01 | [
[
"Carlip",
"S.",
""
],
[
"Gomes",
"H.",
""
]
] | Shape dynamics is a reframing of canonical general relativity in which time reparametrization invariance is "traded" for a local conformal invariance. We explore the emergence of Lorentz invariance in this model in three contexts: as a maximal symmetry, an asymptotic symmetry, and a local invariance. |
gr-qc/0209021 | Yee J. Ng | Y. Jack Ng and H. van Dam (University of North Carolina) | Comment on "Uncertainty in measurements of distance" | 4 pages, aastex | Class.Quant.Grav. 20 (2003) 393 | 10.1088/0264-9381/20/2/311 | null | gr-qc hep-th quant-ph | null | We have argued that quantum mechanics and general relativity give a lower
bound $\delta l \gtrsim l^{1/3} l_P^{2/3}$ on the measurement uncertainty of
any distance $l$ much greater than the Planck length $l_P$. Recently Baez and
Olson have claimed that one can go below this bound by attaching the measuring
device to ... | [
{
"created": "Fri, 6 Sep 2002 21:45:01 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Ng",
"Y. Jack",
"",
"University of North Carolina"
],
[
"van Dam",
"H.",
"",
"University of North Carolina"
]
] | We have argued that quantum mechanics and general relativity give a lower bound $\delta l \gtrsim l^{1/3} l_P^{2/3}$ on the measurement uncertainty of any distance $l$ much greater than the Planck length $l_P$. Recently Baez and Olson have claimed that one can go below this bound by attaching the measuring device to a ... |
1607.03506 | Ricardo Landim | Fabrizio F. Bernardi and Ricardo G. Landim | Coupled quintessence and the impossibility of an interaction: a
dynamical analysis study | 8 pages. References added. To appear in EPJC | European Physical Journal C 2017, 77:290 | 10.1140/epjc/s10052-017-4858-x | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the coupled quintessence in the light of the linear dynamical
systems theory, with two different interactions: i) proportional to the energy
density of the dark energy and ii) proportional to the sum of the energy
densities of the dark matter and dark energy. The results presented here
enlarge the previous... | [
{
"created": "Thu, 30 Jun 2016 19:28:33 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Mar 2017 12:50:13 GMT",
"version": "v2"
},
{
"created": "Tue, 25 Apr 2017 23:50:51 GMT",
"version": "v3"
}
] | 2017-05-09 | [
[
"Bernardi",
"Fabrizio F.",
""
],
[
"Landim",
"Ricardo G.",
""
]
] | We analyze the coupled quintessence in the light of the linear dynamical systems theory, with two different interactions: i) proportional to the energy density of the dark energy and ii) proportional to the sum of the energy densities of the dark matter and dark energy. The results presented here enlarge the previous a... |
1511.02620 | Hellmut Baumg\"artel | Hellmut Baumg\"artel | On the border lines between the regions of distinct solution type for
solutions of the Friedmann equation satisfying the Hubble condition | 14 pages 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well-known that there are four distinct basic types (two Big Bang
types, Lemaitre and Big Crunch type) for solutions of the general Friedmann
equation with positive cosmological constant, where radiation and matter do not
couple (see e.g. [2, p.7]. In that paper the system of case distinction
parameters contain... | [
{
"created": "Mon, 9 Nov 2015 10:21:41 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Jan 2017 16:25:36 GMT",
"version": "v2"
},
{
"created": "Wed, 26 Apr 2017 15:03:49 GMT",
"version": "v3"
}
] | 2017-04-27 | [
[
"Baumgärtel",
"Hellmut",
""
]
] | It is well-known that there are four distinct basic types (two Big Bang types, Lemaitre and Big Crunch type) for solutions of the general Friedmann equation with positive cosmological constant, where radiation and matter do not couple (see e.g. [2, p.7]. In that paper the system of case distinction parameters contains ... |
1610.09319 | Jonathan Thornburg | Jonathan Thornburg and Barry Wardell | Scalar self-force for highly eccentric equatorial orbits in Kerr
spacetime | 64 pages, REVTeX, 30 Postscript figures (24 in color), includes
Mathematica notebooks and parameter files, updated to correspond to published
version | Phys. Rev. D 95, 084043 (2017) | 10.1103/PhysRevD.95.084043 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If a small "particle" of mass $\mu M$ (with $\mu \ll 1$) orbits a black hole
of mass $M$, the leading-order radiation-reaction effect is an
$\mathcal{O}(\mu^2)$ "self-force" acting on the particle, with a corresponding
$\mathcal{O}(\mu)$ "self-acceleration" of the particle away from a geodesic.
Such "extreme--mass-ra... | [
{
"created": "Fri, 28 Oct 2016 17:14:08 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Apr 2017 02:04:30 GMT",
"version": "v2"
}
] | 2017-05-03 | [
[
"Thornburg",
"Jonathan",
""
],
[
"Wardell",
"Barry",
""
]
] | If a small "particle" of mass $\mu M$ (with $\mu \ll 1$) orbits a black hole of mass $M$, the leading-order radiation-reaction effect is an $\mathcal{O}(\mu^2)$ "self-force" acting on the particle, with a corresponding $\mathcal{O}(\mu)$ "self-acceleration" of the particle away from a geodesic. Such "extreme--mass-rati... |
1602.08513 | Hermano Velten | A. M. Oliveira, H. E. S. Velten and J. C. Fabris | Non-trivial static, spherically symmetric vacuum solution in a
non-conservative theory of gravity | v2. 5 pages, 1 figure. Extended discussion on the cosmological
solution. To appear in PRD | Phys. Rev. D 93, 124020 (2016) | 10.1103/PhysRevD.93.124020 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse the vacuum static spherically symmetric space-time for a specific
class of non-conservative theories of gravity based on the Rastall's theory. We
obtain a new vacuum solution which has the same structure as the
Schwarzschild-de Sitter solution in the General Relativity theory obtained with
a cosmological c... | [
{
"created": "Fri, 19 Feb 2016 22:38:45 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Jun 2016 17:05:44 GMT",
"version": "v2"
}
] | 2016-06-15 | [
[
"Oliveira",
"A. M.",
""
],
[
"Velten",
"H. E. S.",
""
],
[
"Fabris",
"J. C.",
""
]
] | We analyse the vacuum static spherically symmetric space-time for a specific class of non-conservative theories of gravity based on the Rastall's theory. We obtain a new vacuum solution which has the same structure as the Schwarzschild-de Sitter solution in the General Relativity theory obtained with a cosmological con... |
1101.3606 | James Rankin | J. E. Rankin | Intrinsic Dirac Behavior of Scalar Curvature in a Quaternionic
Weyl-Cartan Geometry | 37 pages (of which, 24 are pages in the appendix). Major additions to
the appendix, and minor changes to the body of the paper. Copy at
http://www.researchgate.net/profile/James_Rankin/publications may be updated
more often than arXiv copy | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The "spin-up" and "spin-down" projections of the second order, chiral form of
Dirac Theory are shown to fit a superposition of forms predicted in an earlier
classical, complex scalar gauge theory (April, 1992 Class. Quantum Grav.). In
some sense, it appears to be possible to view the two component Dirac spinor as
a s... | [
{
"created": "Wed, 19 Jan 2011 03:19:30 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Aug 2014 02:10:00 GMT",
"version": "v2"
},
{
"created": "Tue, 16 Sep 2014 00:15:23 GMT",
"version": "v3"
},
{
"created": "Wed, 18 Mar 2015 20:24:04 GMT",
"version": "v4"
},
{
"c... | 2017-06-30 | [
[
"Rankin",
"J. E.",
""
]
] | The "spin-up" and "spin-down" projections of the second order, chiral form of Dirac Theory are shown to fit a superposition of forms predicted in an earlier classical, complex scalar gauge theory (April, 1992 Class. Quantum Grav.). In some sense, it appears to be possible to view the two component Dirac spinor as a sin... |
1401.4784 | James M. Overduin | James Overduin, Francis Everitt, Paul Worden and John Mester | STEP and fundamental physics | null | Class. Quantum Grav. 29 (2012) 184012 | 10.1088/0264-9381/29/18/184012 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Satellite Test of the Equivalence Principle (STEP) will advance
experimental limits on violations of Einstein's Equivalence Principle from
their present sensitivity of 2 parts in $10^{13}$ to 1 part in $10^{18}$
through multiple comparison of the motions of four pairs of test masses of
different compositions in a... | [
{
"created": "Mon, 20 Jan 2014 03:32:23 GMT",
"version": "v1"
}
] | 2014-01-21 | [
[
"Overduin",
"James",
""
],
[
"Everitt",
"Francis",
""
],
[
"Worden",
"Paul",
""
],
[
"Mester",
"John",
""
]
] | The Satellite Test of the Equivalence Principle (STEP) will advance experimental limits on violations of Einstein's Equivalence Principle from their present sensitivity of 2 parts in $10^{13}$ to 1 part in $10^{18}$ through multiple comparison of the motions of four pairs of test masses of different compositions in a d... |
gr-qc/9609048 | Erik Martinez | Erik A. Martinez (Center for Gravitational Physics and Geometry, Penn
State, USA) | The postulates of gravitational thermodynamics | 28 pages, Revtex, no figures. An important sentence and several minor
corrections included. To appear in Physical Review D | Phys.Rev.D54:6302-6311,1996 | 10.1103/PhysRevD.54.6302 | CGPG-96/9-5 | gr-qc astro-ph hep-th | null | The general principles and logical structure of a thermodynamic formalism
that incorporates strongly self-gravitating systems are presented. This
framework generalizes and simplifies the formulation of thermodynamics
developed by Callen. The definition of extensive variables, the homogeneity
properties of intensive p... | [
{
"created": "Fri, 20 Sep 1996 00:26:02 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Oct 1996 19:31:32 GMT",
"version": "v2"
}
] | 2011-09-09 | [
[
"Martinez",
"Erik A.",
"",
"Center for Gravitational Physics and Geometry, Penn\n State, USA"
]
] | The general principles and logical structure of a thermodynamic formalism that incorporates strongly self-gravitating systems are presented. This framework generalizes and simplifies the formulation of thermodynamics developed by Callen. The definition of extensive variables, the homogeneity properties of intensive par... |
2203.03223 | Mohammad Bagher Jahani Poshteh | Mohammad Bagher Jahani Poshteh | Timelike orbits around accelerating black holes | 8 pages, 8 figures, v3: Error in the plots on the top panels of Fig.
3 and Fig. 5 corrected | Phys. Rev. D 106, 044037 (2022) | 10.1103/PhysRevD.106.044037 | IPM/P-2022/32 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the geodesics of massive particles around accelerating Schwarzschild
black hole. We show that the radius of the innermost stable circular orbit
increases and the angular momentum of particle at this orbit decreases by
increasing the acceleration. Apart from quantitative influence, the
acceleration qualitativ... | [
{
"created": "Mon, 7 Mar 2022 09:23:00 GMT",
"version": "v1"
},
{
"created": "Sun, 21 Aug 2022 08:23:47 GMT",
"version": "v2"
},
{
"created": "Sun, 25 Jun 2023 08:22:18 GMT",
"version": "v3"
}
] | 2023-06-27 | [
[
"Poshteh",
"Mohammad Bagher Jahani",
""
]
] | We study the geodesics of massive particles around accelerating Schwarzschild black hole. We show that the radius of the innermost stable circular orbit increases and the angular momentum of particle at this orbit decreases by increasing the acceleration. Apart from quantitative influence, the acceleration qualitativel... |
1006.5754 | John D. Swain | John Swain | Gravitatomagnetic Analogs of Electric Transformers | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Linearized general relativity admits a formulation in terms of
gravitoelectric and gravitomagnetic fields that closely parallels the
description of the electromagnetic field by Maxwell's equations. For steady
mass currents, this formalism has been used to understand gravitomagnetic
effects like the Lense-Thirring dra... | [
{
"created": "Wed, 30 Jun 2010 01:14:36 GMT",
"version": "v1"
}
] | 2010-07-01 | [
[
"Swain",
"John",
""
]
] | Linearized general relativity admits a formulation in terms of gravitoelectric and gravitomagnetic fields that closely parallels the description of the electromagnetic field by Maxwell's equations. For steady mass currents, this formalism has been used to understand gravitomagnetic effects like the Lense-Thirring dragg... |
1409.7871 | Clifford M. Will | Clifford M. Will | Was Einstein Right? A Centenary Assessment | 33 pages, 8 figures, to be published in General Relativity and
Gravitation: A Centennial Perspective, eds. A. Ashtekar, B. Berger, J.
Isenberg and M. A. H. MacCallum (Cambridge University Press), 2015. Abridged
version of arXiv:1403.7377 | null | null | null | gr-qc physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article is an overview of 100 years of testing general relativity, to be
published in the book General Relativity and Gravitation: A Centennial
Perspective, to commemorate the 100th anniversary of general relativity. It is
effectively an abridged version of the recent update of the author's Living
Review in Rela... | [
{
"created": "Sun, 28 Sep 2014 05:18:45 GMT",
"version": "v1"
}
] | 2014-09-30 | [
[
"Will",
"Clifford M.",
""
]
] | This article is an overview of 100 years of testing general relativity, to be published in the book General Relativity and Gravitation: A Centennial Perspective, to commemorate the 100th anniversary of general relativity. It is effectively an abridged version of the recent update of the author's Living Review in Relati... |
1203.4901 | Zhi-Guo Liu | Zhi-Guo Liu, Yun-Song Piao | Phantom Inflation in Little Rip | 7 pages, 8 figures, discussion added, Appendix and refs. added, to be
published in PLB | null | 10.1016/j.physletb.2012.05.027 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the phantom inflation in little rip cosmology, in which the current
acceleration is driven by the field with the parameter of state w < -1, but
since w tends to -1 asymptotically, the rip singularity occurs only at infinite
time. In this scenario, before the rip singularity is arrived, the universe is
in an ... | [
{
"created": "Thu, 22 Mar 2012 07:54:12 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Mar 2012 05:18:37 GMT",
"version": "v2"
},
{
"created": "Tue, 15 May 2012 07:41:13 GMT",
"version": "v3"
}
] | 2015-06-04 | [
[
"Liu",
"Zhi-Guo",
""
],
[
"Piao",
"Yun-Song",
""
]
] | We study the phantom inflation in little rip cosmology, in which the current acceleration is driven by the field with the parameter of state w < -1, but since w tends to -1 asymptotically, the rip singularity occurs only at infinite time. In this scenario, before the rip singularity is arrived, the universe is in an in... |
2004.10459 | Deyou Chen | Deyou Chen, Jun Tao, Peng Wang | Thermodynamic extremality relations in the massive gravity | 15pages | Chinese Physics C, 2021, Volume 45, Number 2, 025108 | 10.1088/1674-1137/abcf21 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | A universal relation between the leading correction to the entropy and
extremality was gotten in the work of Goon and Penco. In this paper, we extend
this work to the massive gravity and investigate thermodynamic extremality
relations in a topologically higher-dimensional black hole. A rescaled
cosmological constant ... | [
{
"created": "Wed, 22 Apr 2020 09:24:29 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jul 2020 03:40:20 GMT",
"version": "v2"
}
] | 2021-02-01 | [
[
"Chen",
"Deyou",
""
],
[
"Tao",
"Jun",
""
],
[
"Wang",
"Peng",
""
]
] | A universal relation between the leading correction to the entropy and extremality was gotten in the work of Goon and Penco. In this paper, we extend this work to the massive gravity and investigate thermodynamic extremality relations in a topologically higher-dimensional black hole. A rescaled cosmological constant is... |
2008.12415 | Jie Jiang | Jie Jiang and Ming Zhang | New version of the gedanken experiments to test the weak cosmic
censorship in charged dilaton-Lifshitz black holes | 7 pages, 1 figures, and this paper has been accepted by EPJC | Eur. Phys. J. C 80, 822 (2020) | 10.1140/epjc/s10052-020-8413-9 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, based on the new version of the gedanken experiments proposed
by Sorce and Wald, we examine the weak cosmic censorship in the perturbation
process of accreting matter fields for the charged dilaton-Lifshitz black
holes. In the investigation, we assume that the black hole is perturbed by some
extra matt... | [
{
"created": "Fri, 28 Aug 2020 00:09:13 GMT",
"version": "v1"
}
] | 2020-09-09 | [
[
"Jiang",
"Jie",
""
],
[
"Zhang",
"Ming",
""
]
] | In this paper, based on the new version of the gedanken experiments proposed by Sorce and Wald, we examine the weak cosmic censorship in the perturbation process of accreting matter fields for the charged dilaton-Lifshitz black holes. In the investigation, we assume that the black hole is perturbed by some extra matter... |
gr-qc/9809042 | Michael L. Fil'chenkov | M. L. Fil'chenkov (A. Friedmann Laboratory for Theoretical Physics,
St. Petersburg - Moscow, Russia) | The Quantum Collapse and the Birth of a New Universe | 9 pages, no figures, LaTeX, to appear in Phys. Lett. B | Phys.Lett. B441 (1998) 34-39 | 10.1016/S0370-2693(98)01145-9 | null | gr-qc | null | The gravitational collapse and the birth of a new universe are considered in
terms of quantum mechanics. Transitions from annihilation of matter to
deflation in the collapse and from inflation to creation of matter in the birth
of a universe are considered. The creation of a new universe takes place in
another space-... | [
{
"created": "Fri, 11 Sep 1998 12:54:27 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Fil'chenkov",
"M. L.",
"",
"A. Friedmann Laboratory for Theoretical Physics,\n St. Petersburg - Moscow, Russia"
]
] | The gravitational collapse and the birth of a new universe are considered in terms of quantum mechanics. Transitions from annihilation of matter to deflation in the collapse and from inflation to creation of matter in the birth of a universe are considered. The creation of a new universe takes place in another space-ti... |
1908.05971 | Carsten Gundlach | Carsten Gundlach, Thomas W. Baumgarte and David Hilditch | Critical phenomena in gravitational collapse with two competing massless
matter fields | Section on the numerical method expanded | Phys. Rev. D 100, 104010 (2019) | 10.1103/PhysRevD.100.104010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the gravitational collapse of matter beyond spherical symmetry,
gravitational waves are necessarily present. On the other hand, gravitational
waves can collapse to a black hole even without matter. One might therefore
wonder whether the interaction and competition between the matter fields and
gravitational waves ... | [
{
"created": "Fri, 16 Aug 2019 13:47:09 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Oct 2019 21:02:54 GMT",
"version": "v2"
}
] | 2019-11-13 | [
[
"Gundlach",
"Carsten",
""
],
[
"Baumgarte",
"Thomas W.",
""
],
[
"Hilditch",
"David",
""
]
] | In the gravitational collapse of matter beyond spherical symmetry, gravitational waves are necessarily present. On the other hand, gravitational waves can collapse to a black hole even without matter. One might therefore wonder whether the interaction and competition between the matter fields and gravitational waves af... |
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