id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1302.2578 | Alexander Garkun S. | A.V. Minkevich, A.S. Garkun and V.I. Kudin | On some physical aspects of isotropic cosmology in Riemann-Cartan
spacetime | 14 pages, 7 figures, LaTeX2e, jcappub.sty style file | JCAP03(2013)040 | 10.1088/1475-7516/2013/03/040 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Isotropic cosmology built in the framework of the Poincar\'e gauge theory of
gravity based on sufficiently general expression of gravitational Lagrangian is
considered. The derivation of cosmological equations and equations for torsion
functions in the case of the most general homogeneous isotropic models is
given. P... | [
{
"created": "Mon, 11 Feb 2013 19:27:31 GMT",
"version": "v1"
}
] | 2013-06-10 | [
[
"Minkevich",
"A. V.",
""
],
[
"Garkun",
"A. S.",
""
],
[
"Kudin",
"V. I.",
""
]
] | Isotropic cosmology built in the framework of the Poincar\'e gauge theory of gravity based on sufficiently general expression of gravitational Lagrangian is considered. The derivation of cosmological equations and equations for torsion functions in the case of the most general homogeneous isotropic models is given. Phy... |
0709.1078 | Adam D. Helfer | Adam D. Helfer | Angular momentum of isolated systems | 23 pages, to appear in GRG | Gen.Rel.Grav.39:2125-2147,2007 | 10.1007/s10714-007-0509-0 | null | gr-qc | null | Penrose's twistorial approach to the definition of angular momentum at null
infinity is developed so that angular momenta at different cuts can be
meaningfully compared. This is done by showing that the twistor spaces
associated with different cuts of scri can be identified as manifolds (but not
as vector spaces). Th... | [
{
"created": "Fri, 7 Sep 2007 13:28:11 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Helfer",
"Adam D.",
""
]
] | Penrose's twistorial approach to the definition of angular momentum at null infinity is developed so that angular momenta at different cuts can be meaningfully compared. This is done by showing that the twistor spaces associated with different cuts of scri can be identified as manifolds (but not as vector spaces). The ... |
gr-qc/9810088 | Pantelis S. Apostolopoulos | Michael Tsamparlis, Dimitris Nikolopoulos and Pantelis S.
Apostolopoulos | Computation of the conformal algebra of 1+3 decomposable spacetimes | 15 pages Latex, no figures. Minor mistakes corrected | Class.Quant.Grav. 15 (1998) 2909-2921 | 10.1088/0264-9381/15/9/032 | null | gr-qc | null | The conformal algebra of a 1+3 decomposable spacetime can be computed from
the conformal Killing vectors (CKV) of the 3-space. It is shown that the
general form of such a 3-CKV is the sum of a gradient CKV and a Killing or
homothetic 3-vector. It is proved that spaces of constant curvature always
admit such conformal... | [
{
"created": "Fri, 30 Oct 1998 08:11:04 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Tsamparlis",
"Michael",
""
],
[
"Nikolopoulos",
"Dimitris",
""
],
[
"Apostolopoulos",
"Pantelis S.",
""
]
] | The conformal algebra of a 1+3 decomposable spacetime can be computed from the conformal Killing vectors (CKV) of the 3-space. It is shown that the general form of such a 3-CKV is the sum of a gradient CKV and a Killing or homothetic 3-vector. It is proved that spaces of constant curvature always admit such conformal K... |
gr-qc/0005118 | Andrew Billyard | Andrew P. Billyard (Queen's University), Alan A. Coley (Dalhousie
University) and James E. Lidsey (Queen Mary and Westfield) | Cyclical Behaviour in Early Universe Cosmologies | 9 pages, 3 figures, accepted to J. Math. Phys. (uses Latex's graphicx
utility) | J.Math.Phys. 41 (2000) 6277-6283 | 10.1063/1.1286878 | null | gr-qc hep-th | null | We study early universe cosmologies derived from a scalar-tensor action
containing cosmological constant terms and massless fields. The governing
equations can be written as a dynamical system which contains no past or future
asymptotic equilibrium states (i.e. no sources nor sinks). This leads to
dynamics with very ... | [
{
"created": "Fri, 26 May 2000 15:37:28 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Billyard",
"Andrew P.",
"",
"Queen's University"
],
[
"Coley",
"Alan A.",
"",
"Dalhousie\n University"
],
[
"Lidsey",
"James E.",
"",
"Queen Mary and Westfield"
]
] | We study early universe cosmologies derived from a scalar-tensor action containing cosmological constant terms and massless fields. The governing equations can be written as a dynamical system which contains no past or future asymptotic equilibrium states (i.e. no sources nor sinks). This leads to dynamics with very in... |
2311.14330 | Konstantin Osetrin | V.V. Obukhov and K.E. Osetrin and A.V. Shapovalov | Comments on the article "M.O. Katanaev, Complete separation of variables
in the geodesic Hamilton-Jacobi equation in four dimensions, Physica Scripta
(2023), 98, 104001" | 6 pages | null | null | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by-nc-nd/4.0/ | The present note is a feedback on the article by M.O. Katanaev in "Physica
Scripta" (2023, 98, 104001), where, in our opinion, a distorted view of the
classical theory of separation of variables in the Hamilton-Jacobi equation is
given. We show that the metrics given in this paper, addmiting separation of
variables, ... | [
{
"created": "Fri, 24 Nov 2023 08:08:44 GMT",
"version": "v1"
}
] | 2023-11-27 | [
[
"Obukhov",
"V. V.",
""
],
[
"Osetrin",
"K. E.",
""
],
[
"Shapovalov",
"A. V.",
""
]
] | The present note is a feedback on the article by M.O. Katanaev in "Physica Scripta" (2023, 98, 104001), where, in our opinion, a distorted view of the classical theory of separation of variables in the Hamilton-Jacobi equation is given. We show that the metrics given in this paper, addmiting separation of variables, ar... |
1906.00308 | Michael K. -H. Kiessling | Michael K.-H. Kiessling and A. Shadi Tahvildar-Zadeh | The Einstein-Infeld-Hoffmann legacy in mathematical relativity. Part I:
The classical motion of charged point particles | 14 pages; Rapport by the first author given at the 15th Marcel
Grossmann Meeting on General Relativity, Univ. Roma 1 (La Sapienza), Rome,
Italy, July 3, 2018. V4: corrections in formulas (2.28/29/30). To appear, in
a different layout, in the Conference Proceedings | International J. Mod. Phys. Vol. 28, No. 11 (2019) 1930017 (16
pages) | 10.1142/S0218271819300179 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein, Infeld, and Hoffmann (EIH) claimed that the field equations of
general relativity theory alone imply the equations of motion of neutral matter
particles, viewed as point singularities in space-like slices of spacetime;
they also claimed that they had generalized their results to charged point
singularities.... | [
{
"created": "Sat, 1 Jun 2019 23:18:04 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Jun 2019 22:08:07 GMT",
"version": "v2"
},
{
"created": "Fri, 26 Jul 2019 15:32:18 GMT",
"version": "v3"
},
{
"created": "Fri, 16 Aug 2019 03:17:32 GMT",
"version": "v4"
}
] | 2019-09-25 | [
[
"Kiessling",
"Michael K. -H.",
""
],
[
"Tahvildar-Zadeh",
"A. Shadi",
""
]
] | Einstein, Infeld, and Hoffmann (EIH) claimed that the field equations of general relativity theory alone imply the equations of motion of neutral matter particles, viewed as point singularities in space-like slices of spacetime; they also claimed that they had generalized their results to charged point singularities. W... |
2203.13496 | Mohsen Khodadi | Mohsen Khodadi, Alireza Allahyari, Salvatore Capozziello | Emergent Universe from Energy-Momentum Squared Gravity | 18 pages, 9 figures, accepted for publication in "Physics of the Dark
Universe" | Phys.Dark Univ. 36 (2022) 101013 | 10.1016/j.dark.2022.101013 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In order to bypass the big bang singularity, we develop an emergent universe
scenario within a covariant extension of General Relativity known as
\emph{"Energy-Momentum Squared Gravity"}. The extra terms of the model emerge
in the high energy regime. Considering dynamics in a
Friedmann-Lema\^itre-Robertson-Walker bac... | [
{
"created": "Fri, 25 Mar 2022 08:13:57 GMT",
"version": "v1"
}
] | 2022-04-05 | [
[
"Khodadi",
"Mohsen",
""
],
[
"Allahyari",
"Alireza",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | In order to bypass the big bang singularity, we develop an emergent universe scenario within a covariant extension of General Relativity known as \emph{"Energy-Momentum Squared Gravity"}. The extra terms of the model emerge in the high energy regime. Considering dynamics in a Friedmann-Lema\^itre-Robertson-Walker backg... |
2007.13451 | Aneta Wojnar | Aneta Wojnar | Early evolutionary tracks of low-mass stellar objects in modified
gravity | A version accepted to PRD, 10 pages, one figure, one table | Phys. Rev. D 102, 124045 (2020) | 10.1103/PhysRevD.102.124045 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a simple model of low-mass stellar objects we have shown modified
gravity impact on their early evolution, such as Hayashi tracks, radiative core
development, effective temperature, masses, and luminosities. We have also
suggested that the upper mass' limit of fully convective stars on the Main
Sequence might b... | [
{
"created": "Mon, 27 Jul 2020 11:46:37 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Nov 2020 20:50:54 GMT",
"version": "v2"
}
] | 2021-01-04 | [
[
"Wojnar",
"Aneta",
""
]
] | Using a simple model of low-mass stellar objects we have shown modified gravity impact on their early evolution, such as Hayashi tracks, radiative core development, effective temperature, masses, and luminosities. We have also suggested that the upper mass' limit of fully convective stars on the Main Sequence might be ... |
1701.08217 | Angelo Tartaglia | Angelo Tartaglia, Enrico Lorenzini, David Lucchesi, Giovanni Pucacco,
Matteo Luca Ruggiero, Pavol Valko | Sun-Earth Lagrange reference for fundamental physics and navigation | 28 pages, 2 figures | null | 10.1007/s10714-017-2332-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The use of four Lagrange points of the Sun/Earth system for fundamental
physics experiments in space is presented. L1, L2, L4 and L5 rotating rigidly
together with the Earth form a natural reference frame at the scale of the
inner solar system. The idea which is discussed in the paper considers the
possibility of loc... | [
{
"created": "Fri, 27 Jan 2017 23:06:44 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Nov 2017 14:10:45 GMT",
"version": "v2"
},
{
"created": "Mon, 27 Nov 2017 09:19:37 GMT",
"version": "v3"
}
] | 2017-12-27 | [
[
"Tartaglia",
"Angelo",
""
],
[
"Lorenzini",
"Enrico",
""
],
[
"Lucchesi",
"David",
""
],
[
"Pucacco",
"Giovanni",
""
],
[
"Ruggiero",
"Matteo Luca",
""
],
[
"Valko",
"Pavol",
""
]
] | The use of four Lagrange points of the Sun/Earth system for fundamental physics experiments in space is presented. L1, L2, L4 and L5 rotating rigidly together with the Earth form a natural reference frame at the scale of the inner solar system. The idea which is discussed in the paper considers the possibility of locat... |
gr-qc/9512001 | Kiyoshi Shiraishi | Kiyoshi Shiraishi (Akita Junior College) | Low-Energy Interaction of a Cosmic String and an Extreme Dilatonic Black
Hole | 10 pages, revtex | Class.Quant.Grav.13:1655-1660,1996 | 10.1088/0264-9381/13/6/027 | AJC-HEP-29 | gr-qc | null | The interaction of a cosmic string and a maximally charged dilatonic black
hole is studied in the low-velocity limit. In particular, the string-black hole
scattering at a low velocity is investigated.
| [
{
"created": "Fri, 1 Dec 1995 09:15:24 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Shiraishi",
"Kiyoshi",
"",
"Akita Junior College"
]
] | The interaction of a cosmic string and a maximally charged dilatonic black hole is studied in the low-velocity limit. In particular, the string-black hole scattering at a low velocity is investigated. |
gr-qc/0610007 | Alexander Burinskii | Alexander Burinskii | The Kerr theorem, Kerr-Schild formalizm and multiparticle Kerr-Schild
solutions | Brief version of hep-th/0510246. Plenary talk at the Intern. Conf. on
Gravitation, Cosmology, Astrophysics and Nonstationary Gas Dynamics,
dedicated to Prof. K.P. Staniukovich's 90th birthday, Moscow, 2-6 March 2006 | Grav.Cosmol. 12 (2006) 119-125 | null | null | gr-qc hep-th quant-ph | null | We consider an extended version of the Kerr theorem incorporated in the
Kerr-Schild formalism. It allows one to construct the series of exact solutions
of the Einstein-Maxwell field equations from a holomorphic generating function
$F$ of twistor variables. The exact multiparticle Kerr-Schild solutions are
obtained fr... | [
{
"created": "Mon, 2 Oct 2006 13:20:30 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Burinskii",
"Alexander",
""
]
] | We consider an extended version of the Kerr theorem incorporated in the Kerr-Schild formalism. It allows one to construct the series of exact solutions of the Einstein-Maxwell field equations from a holomorphic generating function $F$ of twistor variables. The exact multiparticle Kerr-Schild solutions are obtained from... |
gr-qc/0101036 | Kechkin O. V. | Oleg V. Kechkin, Maria V. Yurova | Chiral models in dilaton-Maxwell gravity | 9 pages in LaTex; published in Gen. Rel. Grav. 32 (2000) pp 1389-1397 | Gen.Rel.Grav. 32 (2000) 1389-1397 | 10.1023/A:1001955123773 | null | gr-qc | null | We study symmetry properties of the Einstein-Maxwell theory nonminimaly
coupled to the dilaton field. We consider a static case with pure electric
(magnetic) Maxwell field and show that the resulting system becomes a nonlinear
sigma-model wich possesses a chiral representation. We construct the
corresponding chiral m... | [
{
"created": "Wed, 10 Jan 2001 11:26:41 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Kechkin",
"Oleg V.",
""
],
[
"Yurova",
"Maria V.",
""
]
] | We study symmetry properties of the Einstein-Maxwell theory nonminimaly coupled to the dilaton field. We consider a static case with pure electric (magnetic) Maxwell field and show that the resulting system becomes a nonlinear sigma-model wich possesses a chiral representation. We construct the corresponding chiral mat... |
1205.1872 | Shahar Hod | Shahar Hod | On the instability regime of the rotating Kerr spacetime to massive
scalar perturbations | 5 pages. arXiv admin note: text overlap with arXiv:0910.0734 | Physics Letters B 708, 320-323 (2012) | 10.1016/j.physletb.2012.01.054 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The instability of rotating Kerr black holes due to massive scalar
perturbations is investigated. It is well known that a bosonic field impinging
on a Kerr black hole can be amplified as it scatters off the hole. This
superradiant scattering occurs for frequencies in the range $\omega<m\Omega$,
where $\Omega$ is the ... | [
{
"created": "Wed, 9 May 2012 05:30:55 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Hod",
"Shahar",
""
]
] | The instability of rotating Kerr black holes due to massive scalar perturbations is investigated. It is well known that a bosonic field impinging on a Kerr black hole can be amplified as it scatters off the hole. This superradiant scattering occurs for frequencies in the range $\omega<m\Omega$, where $\Omega$ is the an... |
1507.06446 | Orlando Luongo | Orlando Luongo, Hernando Quevedo | Self-accelerated universe induced by repulsive effects as an alternative
to dark energy and modified gravities | 5 pages, 2 figures | null | null | null | gr-qc astro-ph.CO math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of current-time universe's acceleration is usually modeled by
means of two main strategies. The first makes use of a dark energy barotropic
fluid entering \emph{by hand} the energy-momentum tensor of Einstein's theory.
The second lies on extending the Hilbert-Einstein action giving rise to the
class of ... | [
{
"created": "Thu, 23 Jul 2015 11:10:10 GMT",
"version": "v1"
}
] | 2015-07-24 | [
[
"Luongo",
"Orlando",
""
],
[
"Quevedo",
"Hernando",
""
]
] | The existence of current-time universe's acceleration is usually modeled by means of two main strategies. The first makes use of a dark energy barotropic fluid entering \emph{by hand} the energy-momentum tensor of Einstein's theory. The second lies on extending the Hilbert-Einstein action giving rise to the class of ex... |
gr-qc/0203032 | Forough Nasseri | Forough Nasseri | Dynamics of Chaotic Inflation with Variable Space Dimension | 16 pages, accepted in Phys. Lett. B | Phys.Lett. B538 (2002) 223-232 | 10.1016/S0370-2693(02)01995-0 | null | gr-qc astro-ph hep-ph hep-th | null | Within the framework of a model Universe with variable space dimension, we
study chaotic inflation with the potential $m^2\phi^2/2$, and calculate the
dynamical solutions of the inflaton field, variable space dimension, scale
factor, and their interdependence during the inflationary epoch. We show that
the characteri... | [
{
"created": "Sun, 10 Mar 2002 21:54:16 GMT",
"version": "v1"
},
{
"created": "Fri, 24 May 2002 11:10:55 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Nasseri",
"Forough",
""
]
] | Within the framework of a model Universe with variable space dimension, we study chaotic inflation with the potential $m^2\phi^2/2$, and calculate the dynamical solutions of the inflaton field, variable space dimension, scale factor, and their interdependence during the inflationary epoch. We show that the characterist... |
gr-qc/0502005 | Michel Leclerc | M. Leclerc | The Higgs sector of gravitational gauge theories | 50 pages, version to appear in Annals Phys | Annals Phys. 321 (2006) 708-743 | 10.1016/j.aop.2005.08.009 | null | gr-qc | null | Gravitational gauge theories with de Sitter, Poincare and affine symmetry
group are investigated under the aspect of the breakdown of the initial
symmetry group down to the Lorentz subgroup. We review the theory of
spontaneously broken de Sitter gravity by Stelle and West and apply a similar
approach to the case of t... | [
{
"created": "Wed, 2 Feb 2005 08:01:54 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Apr 2005 10:45:27 GMT",
"version": "v2"
},
{
"created": "Thu, 13 Oct 2005 04:59:17 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Leclerc",
"M.",
""
]
] | Gravitational gauge theories with de Sitter, Poincare and affine symmetry group are investigated under the aspect of the breakdown of the initial symmetry group down to the Lorentz subgroup. We review the theory of spontaneously broken de Sitter gravity by Stelle and West and apply a similar approach to the case of the... |
1105.2605 | Tiberiu Harko | K. C. Wong, T. Harko, K. S. Cheng | Inflating wormholes in the braneworld models | 30 pages, no figures, accepted for publication in CQG | Class. Quantum Grav. 28 (2011) 145023 | 10.1088/0264-9381/28/14/145023 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The braneworld model, in which our Universe is a three-brane embedded in a
five-dimensional bulk, allows the existence of wormholes, without any violation
of the energy conditions. A fundamental ingredient of traversable wormholes is
the violation of the null energy condition (NEC). However, in the brane world
models... | [
{
"created": "Fri, 13 May 2011 03:53:59 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Wong",
"K. C.",
""
],
[
"Harko",
"T.",
""
],
[
"Cheng",
"K. S.",
""
]
] | The braneworld model, in which our Universe is a three-brane embedded in a five-dimensional bulk, allows the existence of wormholes, without any violation of the energy conditions. A fundamental ingredient of traversable wormholes is the violation of the null energy condition (NEC). However, in the brane world models, ... |
1901.09905 | Vladimir Folomeev | Vladimir Dzhunushaliev, Vladimir Folomeev | Dirac star in the presence of Maxwell and Proca fields | 12 pages, 8 figures, minor corrections to content, new references
added, version published in PRD | Phys. Rev. D 99, 104066 (2019) | 10.1103/PhysRevD.99.104066 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider configurations consisting of a gravitating nonlinear spinor field
$\psi$, with a nonlinearity of the type $\lambda\left(\bar\psi\psi\right)^2$,
minimally coupled to Maxwell and Proca fields through the coupling constants
$Q_M$ [U(1) electric charge] and $Q_P$, respectively. In order to ensure
spherical sy... | [
{
"created": "Mon, 28 Jan 2019 06:47:37 GMT",
"version": "v1"
},
{
"created": "Thu, 30 May 2019 05:34:43 GMT",
"version": "v2"
}
] | 2019-05-31 | [
[
"Dzhunushaliev",
"Vladimir",
""
],
[
"Folomeev",
"Vladimir",
""
]
] | We consider configurations consisting of a gravitating nonlinear spinor field $\psi$, with a nonlinearity of the type $\lambda\left(\bar\psi\psi\right)^2$, minimally coupled to Maxwell and Proca fields through the coupling constants $Q_M$ [U(1) electric charge] and $Q_P$, respectively. In order to ensure spherical symm... |
2306.12522 | Sayak Datta | Sayak Datta | Eccentricity evolution of spinning binaries | arXiv admin note: text overlap with arXiv:2305.03771 | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We study the evolution of the eccentricity of an eccentric orbit with
spinning components. We develop a prescription to express the evolving
eccentricity in terms of initial eccentricity and frequency. For that purpose
we considered the spins to be perpendicular to the orbital plane. Using this we
found an analytical... | [
{
"created": "Wed, 21 Jun 2023 19:17:20 GMT",
"version": "v1"
}
] | 2023-06-23 | [
[
"Datta",
"Sayak",
""
]
] | We study the evolution of the eccentricity of an eccentric orbit with spinning components. We develop a prescription to express the evolving eccentricity in terms of initial eccentricity and frequency. For that purpose we considered the spins to be perpendicular to the orbital plane. Using this we found an analytical r... |
1603.00852 | Willians Barreto | W. Barreto, J. Crespo, H. de Oliveira, E. Rodrigues, B.
Rodriguez-Mueller | Mass gap in the critical gravitational collapse of a kink | 5 pages, 5 figures; to appear in Physical Review D | Physical Review D 93, 064042 (2016) | 10.1103/PhysRevD.93.064042 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the gravitational collapse of a kink within spherical symmetry and
the characteristic formulation of General Relativity. We explore some expected
but elusive gravitational collapse issues which have not been studied before in
detail, finding new features. The numerical one-parametric solution and the
structu... | [
{
"created": "Wed, 2 Mar 2016 20:23:57 GMT",
"version": "v1"
}
] | 2016-04-20 | [
[
"Barreto",
"W.",
""
],
[
"Crespo",
"J.",
""
],
[
"de Oliveira",
"H.",
""
],
[
"Rodrigues",
"E.",
""
],
[
"Rodriguez-Mueller",
"B.",
""
]
] | We study the gravitational collapse of a kink within spherical symmetry and the characteristic formulation of General Relativity. We explore some expected but elusive gravitational collapse issues which have not been studied before in detail, finding new features. The numerical one-parametric solution and the structure... |
2306.12253 | Thomas Buchert | Thomas Buchert | Direct correspondence between Newtonian gravitation and general
relativity | 6 pages; matches published version in PRD Letters | Phys. Rev. D 108, L101502 (2023) | 10.1103/PhysRevD.108.L101502 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | We present a strategy to obtain equations of general relativity for an
irrotational dust continuum within a flow-orthogonal foliation of spacetime
from the equations of Newtonian gravitation, and vice versa, without employing
a weak field expansion or a limiting process on the speed of light. We argue
that writing Ne... | [
{
"created": "Wed, 21 Jun 2023 13:21:42 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Nov 2023 14:13:05 GMT",
"version": "v2"
}
] | 2023-11-23 | [
[
"Buchert",
"Thomas",
""
]
] | We present a strategy to obtain equations of general relativity for an irrotational dust continuum within a flow-orthogonal foliation of spacetime from the equations of Newtonian gravitation, and vice versa, without employing a weak field expansion or a limiting process on the speed of light. We argue that writing Newt... |
gr-qc/9501018 | Jose M. Izquierdo | J.M. Izquierdo and P.K.Townsend | Supersymmetric spacetimes in 2+1 adS-supergravity models | 47 pages, phyzzx.tex, no figures. | Class.Quant.Grav.12:895-924,1995 | 10.1088/0264-9381/12/4/003 | DAMTP-R/94/44 | gr-qc hep-th | null | We find a class of (2+1)-dimensional spacetimes admitting Killing spinors
appropriate to (2,0) adS-supergravity. The vacuum spacetimes include anti-de
Sitter (adS) space and charged extreme black holes, but there are many others,
including spacetimes of arbitrarily large negative energy that have only
conical singula... | [
{
"created": "Tue, 17 Jan 1995 17:24:08 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Izquierdo",
"J. M.",
""
],
[
"Townsend",
"P. K.",
""
]
] | We find a class of (2+1)-dimensional spacetimes admitting Killing spinors appropriate to (2,0) adS-supergravity. The vacuum spacetimes include anti-de Sitter (adS) space and charged extreme black holes, but there are many others, including spacetimes of arbitrarily large negative energy that have only conical singulari... |
gr-qc/9906052 | Seth A. Major | Seth A. Major | Quasilocal Energy for Spin-net Gravity | 24 pages, 20 figures; v2 significant changes: section 3.2 expanded,
section 3.4 rewritten, discussion of edge orientation revised, to be
published in Class Quant Grav | Class.Quant.Grav. 17 (2000) 1467-1487 | 10.1088/0264-9381/17/6/311 | null | gr-qc | null | The Hamiltonian of a gravitational system defined in a region with boundary
is quantized. The classical Hamiltonian, and starting point for the
regularization, is required by functional differentiablity of the Hamiltonian
constraint. The boundary term is the quasilocal energy of the system and
becomes the ADM mass in... | [
{
"created": "Tue, 15 Jun 1999 15:29:18 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Feb 2000 14:30:21 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Major",
"Seth A.",
""
]
] | The Hamiltonian of a gravitational system defined in a region with boundary is quantized. The classical Hamiltonian, and starting point for the regularization, is required by functional differentiablity of the Hamiltonian constraint. The boundary term is the quasilocal energy of the system and becomes the ADM mass in a... |
1504.00841 | Jacek Syska Mr. | Jacek Syska | Redshift in a six-dimensional classical Kaluza-Klein type model | 40 pages, 9 figure. arXiv admin note: text overlap with
arXiv:hep-ph/0202133 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Multidimensional theories still remain attractive from the point of view of
better understanding fundamental interactions. In this paper a six-dimensional
Kaluza-Klein type model at the classical, Einstein's gravity formulation is
considered. The static spherically symmetric solution of the six-dimensional
Einstein e... | [
{
"created": "Sun, 29 Mar 2015 16:20:13 GMT",
"version": "v1"
}
] | 2015-04-06 | [
[
"Syska",
"Jacek",
""
]
] | Multidimensional theories still remain attractive from the point of view of better understanding fundamental interactions. In this paper a six-dimensional Kaluza-Klein type model at the classical, Einstein's gravity formulation is considered. The static spherically symmetric solution of the six-dimensional Einstein equ... |
gr-qc/0104010 | V. Suneeta | T. R. Govindarajan, R. K. Kaul and V. Suneeta | Logarithmic correction to the Bekenstein-Hawking entropy of the BTZ
black hole | LaTeX, 10 pages, typos corrected, clarifications added | Class.Quant.Grav.18:2877-2886,2001 | 10.1088/0264-9381/18/15/303 | IMSc/2001/04/14 | gr-qc hep-th | null | We derive an exact expression for the partition function of the Euclidean BTZ
black hole. Using this, we show that for a black hole with large horizon area,
the correction to the Bekenstein-Hawking entropy is $-3/2 log(Area)$, in
agreement with that for the Schwarzschild black hole obtained in the canonical
gravity f... | [
{
"created": "Tue, 3 Apr 2001 09:22:58 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Apr 2001 08:33:47 GMT",
"version": "v2"
},
{
"created": "Wed, 9 May 2001 17:03:22 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Govindarajan",
"T. R.",
""
],
[
"Kaul",
"R. K.",
""
],
[
"Suneeta",
"V.",
""
]
] | We derive an exact expression for the partition function of the Euclidean BTZ black hole. Using this, we show that for a black hole with large horizon area, the correction to the Bekenstein-Hawking entropy is $-3/2 log(Area)$, in agreement with that for the Schwarzschild black hole obtained in the canonical gravity for... |
0904.4213 | Dieter Gromes | Dieter Gromes | Lowest order covariant averaging of a perturbed metric and of the
Einstein tensor | 16 pages | null | null | HD-THEP-09-04 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an explicit averaging formula in lowest order. Besides an
arbitrary smearing function it contains two integrals of this function. This is
necessary in order to achieve covariance. There is no need to solve any
equations. In three dimensions the same averaging formula yields a covariant
averaging of the Ein... | [
{
"created": "Mon, 27 Apr 2009 16:44:33 GMT",
"version": "v1"
}
] | 2009-04-28 | [
[
"Gromes",
"Dieter",
""
]
] | We present an explicit averaging formula in lowest order. Besides an arbitrary smearing function it contains two integrals of this function. This is necessary in order to achieve covariance. There is no need to solve any equations. In three dimensions the same averaging formula yields a covariant averaging of the Einst... |
1601.01035 | Yungui Gong | Yumei Huang and Yungui Gong | Thermodynamics of general scalar-tensor theory with non-minimally
derivative coupling | 10 pages, no figure, minor corrections, SCIENCE CHINA
Physics,Mechanics & Astronomy in press | Sci. China-Phys. Mech. Astron. 59, 640402 (2016) | 10.1007/s11433-016-5793-9 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With the usual definitions for the entropy and the temperature associated
with the apparent horizon, we discuss the first law of the thermodynamics on
the apparent in the general scalar-tensor theory of gravity with the kinetic
term of the scalar field non-minimally coupling to Einstein tensor. We show the
equivalenc... | [
{
"created": "Wed, 6 Jan 2016 00:55:22 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Feb 2016 10:05:10 GMT",
"version": "v2"
}
] | 2016-03-04 | [
[
"Huang",
"Yumei",
""
],
[
"Gong",
"Yungui",
""
]
] | With the usual definitions for the entropy and the temperature associated with the apparent horizon, we discuss the first law of the thermodynamics on the apparent in the general scalar-tensor theory of gravity with the kinetic term of the scalar field non-minimally coupling to Einstein tensor. We show the equivalence ... |
1005.1386 | Khalid Saifullah | Asghar Qadir, K. Saifullah | On the definition of matter collineations | null | Mod.Phys.Lett.A24:2769-2775,2009 | 10.1142/S0217732309031247 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that when the stress-energy tensor of a spacetime is diagonal and
is written in the mixed form, its collineations admit infinite dimensional Lie
algebras except possibly in the case when the tensor depends on all the
spacetime coordinates. The result can be extended for more general second rank
tensors.
| [
{
"created": "Sun, 9 May 2010 11:29:03 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Qadir",
"Asghar",
""
],
[
"Saifullah",
"K.",
""
]
] | It is shown that when the stress-energy tensor of a spacetime is diagonal and is written in the mixed form, its collineations admit infinite dimensional Lie algebras except possibly in the case when the tensor depends on all the spacetime coordinates. The result can be extended for more general second rank tensors. |
gr-qc/0104034 | Carlo Rovelli | Alejandro Perez, Carlo Rovelli | Observables in quantum gravity | 25 pages, typos corected | In "Quanta of Maths", E.Blanchard, D.Ellwood, M.Khalkhali,
M.Marcolli, H.Moscovici, S.Popa eds., pg 501-518, American Mathematical
Society (2011) | null | null | gr-qc | null | We study a family of physical observable quantities in quantum gravity. We
denote them W functions, or n-net functions. They represent transition
amplitudes between quantum states of the geometry, are analogous to the n-point
functions in quantum field theory, but depend on spin networks with n connected
components. ... | [
{
"created": "Thu, 12 Apr 2001 12:36:06 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Apr 2001 15:15:56 GMT",
"version": "v2"
}
] | 2011-04-19 | [
[
"Perez",
"Alejandro",
""
],
[
"Rovelli",
"Carlo",
""
]
] | We study a family of physical observable quantities in quantum gravity. We denote them W functions, or n-net functions. They represent transition amplitudes between quantum states of the geometry, are analogous to the n-point functions in quantum field theory, but depend on spin networks with n connected components. In... |
1305.0394 | Jedrzej Swiezewski | Andrea Dapor, Wojciech Kami\'nski, Jerzy Lewandowski and Jedrzej
\'Swie\.zewski | Relational Evolution of Observables for Hamiltonian-Constrained Systems | 8 pages, 1 figure. Version published in Phys. Rev. D | Phys. Rev. D 88, 084007 (2013) | 10.1103/PhysRevD.88.084007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Evolution of systems in which Hamiltonians are generators of gauge
transformations is a notion that requires more structure than the canonical
theory provides. We identify and study this additional structure in the
framework of relational observables ("partial observables"). We formulate
necessary and sufficient cond... | [
{
"created": "Thu, 2 May 2013 11:16:48 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Jun 2013 16:02:40 GMT",
"version": "v2"
},
{
"created": "Mon, 28 Oct 2013 10:54:08 GMT",
"version": "v3"
}
] | 2013-10-30 | [
[
"Dapor",
"Andrea",
""
],
[
"Kamiński",
"Wojciech",
""
],
[
"Lewandowski",
"Jerzy",
""
],
[
"Świeżewski",
"Jedrzej",
""
]
] | Evolution of systems in which Hamiltonians are generators of gauge transformations is a notion that requires more structure than the canonical theory provides. We identify and study this additional structure in the framework of relational observables ("partial observables"). We formulate necessary and sufficient condit... |
2212.07653 | Sebasti\'an Bahamonde Dr | Sebastian Bahamonde, Daniela D. Doneva, Ludovic Ducobu, Christian
Pfeifer, Stoytcho S. Yazadjiev | Spontaneous Scalarization of Black Holes in Gauss-Bonnet Teleparallel
Gravity | 23 pages, 10 figures. Matches published version in PRD | Phys.Rev.D 107 (2023) 10, 104013 | 10.1103/PhysRevD.107.104013 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we find new scalarized black holes by coupling a scalar field
with the Gauss-Bonnet invariant in Teleparallel gravity. The Teleparallel
formulation of this theory uses torsion instead of curvature to describe the
gravitational interaction and it turns out that, in this language, the usual
Gauss-Bonnet ... | [
{
"created": "Thu, 15 Dec 2022 08:19:07 GMT",
"version": "v1"
},
{
"created": "Tue, 9 May 2023 15:55:18 GMT",
"version": "v2"
}
] | 2023-05-10 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Doneva",
"Daniela D.",
""
],
[
"Ducobu",
"Ludovic",
""
],
[
"Pfeifer",
"Christian",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
]
] | In this paper, we find new scalarized black holes by coupling a scalar field with the Gauss-Bonnet invariant in Teleparallel gravity. The Teleparallel formulation of this theory uses torsion instead of curvature to describe the gravitational interaction and it turns out that, in this language, the usual Gauss-Bonnet te... |
gr-qc/9601042 | Katsutarou Shimizu | Katsutaro Shimizu | Dirac versus reduced quantization and operator ordering | 11 pages, Revtex | Prog.Theor.Phys. 97 (1997) 153-162 | 10.1143/PTP.97.153 | null | gr-qc | null | We show an equivalence between Dirac quantization and the reduced phase space
quantization. The equivalence of the both quantization methods determines the
operator ordering of the Hamiltonian. Some examples of the operator ordering
are shown in simple models.
| [
{
"created": "Fri, 26 Jan 1996 07:30:23 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Shimizu",
"Katsutaro",
""
]
] | We show an equivalence between Dirac quantization and the reduced phase space quantization. The equivalence of the both quantization methods determines the operator ordering of the Hamiltonian. Some examples of the operator ordering are shown in simple models. |
1310.6216 | Alessio Orlandi | Roberto Casadio, Alessio Orlandi | Quantum Harmonic Black Holes (Proceeding of the Karl Schwarzschild
Meeting 2013) | 6 pages. Contribution to the Proceedings of the Karl Schwarzschild
Meeting (Frankfurt, July 22-26, 2013) | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspired by the recent conjecture that black holes are condensates of
gravitons, we investigate a simple model for the black hole degrees of freedom
that is consistent both from the point of view of Quantum mechanics and of
General Relativity. Since the two perspectives should "converge" into a unified
picture for sm... | [
{
"created": "Wed, 23 Oct 2013 13:17:45 GMT",
"version": "v1"
}
] | 2013-10-24 | [
[
"Casadio",
"Roberto",
""
],
[
"Orlandi",
"Alessio",
""
]
] | Inspired by the recent conjecture that black holes are condensates of gravitons, we investigate a simple model for the black hole degrees of freedom that is consistent both from the point of view of Quantum mechanics and of General Relativity. Since the two perspectives should "converge" into a unified picture for smal... |
gr-qc/0412111 | Irina Radinschi | I. Radinschi, (Physics Department, ``Gh. Asachi'' Technical
University) | The KKW Generalized Analysis for a Magnetic Stringy Black Hole | 8 pages, LaTex | null | null | null | gr-qc | null | We apply the Keski-Vakkuri, Kraus and Wilczek (KKW) generalized analysis to a
magnetic stringy black hole solution to compute its temperature and entropy.
The solution that we choose in the Einstein-dilaton-Maxwell theory is the dual
solution known as the magnetic black hole solution. Our results show that the
expres... | [
{
"created": "Wed, 22 Dec 2004 08:27:07 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Jan 2005 12:14:56 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Radinschi",
"I.",
""
]
] | We apply the Keski-Vakkuri, Kraus and Wilczek (KKW) generalized analysis to a magnetic stringy black hole solution to compute its temperature and entropy. The solution that we choose in the Einstein-dilaton-Maxwell theory is the dual solution known as the magnetic black hole solution. Our results show that the expressi... |
2212.11450 | Xuefeng Zhang | Kun Liu, Chengjian Luo, Xuefeng Zhang | Effect of solar free oscillations on TianQin's range acceleration noise | 10 pages, 5 figures | Class. Quantum Grav. 40 197001 (2023) | 10.1088/1361-6382/acf08d | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | TianQin is a proposed space-based gravitational-wave detector mission to be
deployed and operated in high Earth orbits. As a sequel to [Zhang et al. Phys.
Rev. D 103, 062001 (2021)], we investigate a type of ``orbital noise'' in
TianQin's range acceleration that is caused by gravitational perturbation
associated with... | [
{
"created": "Thu, 22 Dec 2022 01:47:17 GMT",
"version": "v1"
}
] | 2023-09-06 | [
[
"Liu",
"Kun",
""
],
[
"Luo",
"Chengjian",
""
],
[
"Zhang",
"Xuefeng",
""
]
] | TianQin is a proposed space-based gravitational-wave detector mission to be deployed and operated in high Earth orbits. As a sequel to [Zhang et al. Phys. Rev. D 103, 062001 (2021)], we investigate a type of ``orbital noise'' in TianQin's range acceleration that is caused by gravitational perturbation associated with s... |
2201.01498 | Yu-Peng Zhang | Yu-Peng Zhang, Yan-Bo Zeng, Yong-Qiang Wang, Shao-Wen Wei, Yu-Xiao Liu | Equatorial orbits of spinning test particle in rotating boson star | 11 pages, 6 figures | Eur. Phys. J. C 82, 809 (2022) | 10.1140/epjc/s10052-022-10743-w | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the circular orbit of the spinning test particle in
the background of a rotating boson star. Using the pole-dipole approximation
and neglecting the back-reaction of the spinning test particle on the
spacetime, the equation of motion of the spinning test particle is described by
the Mathisson-P... | [
{
"created": "Wed, 5 Jan 2022 08:23:35 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Jan 2022 08:47:49 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Sep 2022 01:33:03 GMT",
"version": "v3"
}
] | 2022-09-14 | [
[
"Zhang",
"Yu-Peng",
""
],
[
"Zeng",
"Yan-Bo",
""
],
[
"Wang",
"Yong-Qiang",
""
],
[
"Wei",
"Shao-Wen",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | In this paper, we study the circular orbit of the spinning test particle in the background of a rotating boson star. Using the pole-dipole approximation and neglecting the back-reaction of the spinning test particle on the spacetime, the equation of motion of the spinning test particle is described by the Mathisson-Pap... |
1910.06118 | Jackson Levi Said | Joseph Sultana, Demosthenes Kazanas and Jackson Levi Said | Conformal Weyl gravity and perihelion precession | 8 pages | Phys. Rev. D 86, 084008 (2012) | 10.1103/PhysRevD.86.084008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the perihelion shift of planetary motion in conformal Weyl
gravity using the metric of the static, spherically symmetric solution
discovered by Mannheim \& Kazanas (1989). To this end we employ a procedure
similar to that used by Weinberg for the Schwarzschild solution, which has also
been used recentl... | [
{
"created": "Fri, 11 Oct 2019 10:29:54 GMT",
"version": "v1"
}
] | 2019-10-15 | [
[
"Sultana",
"Joseph",
""
],
[
"Kazanas",
"Demosthenes",
""
],
[
"Said",
"Jackson Levi",
""
]
] | We investigate the perihelion shift of planetary motion in conformal Weyl gravity using the metric of the static, spherically symmetric solution discovered by Mannheim \& Kazanas (1989). To this end we employ a procedure similar to that used by Weinberg for the Schwarzschild solution, which has also been used recently ... |
gr-qc/0612131 | Eduardo Gueron | Eduardo Gueron, Ricardo A. Mosna | The relativistic glider | 3 pages, 2 figures. To appear in Phys Rev D | Phys.Rev.D75:081501,2007 | 10.1103/PhysRevD.75.081501 | null | gr-qc astro-ph | null | We present a purely relativistic effect according to which asymmetric
oscillations of a quasi-rigid body slow down or accelerate its fall in a
gravitational background.
| [
{
"created": "Thu, 21 Dec 2006 02:22:54 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Apr 2007 17:11:33 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Gueron",
"Eduardo",
""
],
[
"Mosna",
"Ricardo A.",
""
]
] | We present a purely relativistic effect according to which asymmetric oscillations of a quasi-rigid body slow down or accelerate its fall in a gravitational background. |
1301.0525 | Jose Socorro Garcia | Rafael Hern\'andez, Juan M. Ram\'irez and J. Socorro | FRW in cosmological self-creation theory: Hamiltonian approach | 9 pages, latex2e. arXiv admin note: substantial text overlap with
arXiv:1206.5413 | null | 10.1063/1.4817053 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the Brans-Dicke theory from the framework of General Relativity
(Einstein frame), but now the total energy momentum tensor fulfills the
following condition $\rm[\frac{1}{\phi}(8\pi T^{\mu \nu (M)}+T^{\mu\nu
(\phi)})]_{;\nu}=0$. We take as a first model the flat FRW metric in the
Hamilton-Jacobi scheme and we p... | [
{
"created": "Thu, 3 Jan 2013 17:51:21 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Hernández",
"Rafael",
""
],
[
"Ramírez",
"Juan M.",
""
],
[
"Socorro",
"J.",
""
]
] | We use the Brans-Dicke theory from the framework of General Relativity (Einstein frame), but now the total energy momentum tensor fulfills the following condition $\rm[\frac{1}{\phi}(8\pi T^{\mu \nu (M)}+T^{\mu\nu (\phi)})]_{;\nu}=0$. We take as a first model the flat FRW metric in the Hamilton-Jacobi scheme and we pre... |
2109.12763 | Doug Edmonds | Douglas Edmonds, Djordje Minic, Tatsu Takeuchi | On Quantum Gravity and Quantum Gravity Phenomenology | 20 pages, 1 figure. arXiv admin note: substantial text overlap with
arXiv:2003.00318 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article summarizes a new approach to quantum gravity based on the
concepts of modular spacetime, Born geometry, and metastring theory and their
applications to quantum gravity phenomenology. In particular, we discuss a new
understanding of dark matter in terms of metaparticles (zero modes of the
metastring) and ... | [
{
"created": "Mon, 27 Sep 2021 02:16:45 GMT",
"version": "v1"
}
] | 2021-09-28 | [
[
"Edmonds",
"Douglas",
""
],
[
"Minic",
"Djordje",
""
],
[
"Takeuchi",
"Tatsu",
""
]
] | This article summarizes a new approach to quantum gravity based on the concepts of modular spacetime, Born geometry, and metastring theory and their applications to quantum gravity phenomenology. In particular, we discuss a new understanding of dark matter in terms of metaparticles (zero modes of the metastring) and it... |
0909.3380 | Stuart Dowker | J.S.Dowker | Harmonics on the factored three-sphere and the Hopf map | 21 pages. Physical motivation added. Analytical improvements.
Extension to icosahedral tensors with relevant reference | null | null | null | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Laplacian eigenmodes on homogeneous Clifford--Klein factors of the
three--sphere are obtained as pullbacks of harmonics on the orbifolded
two--sphere using the Hopf map. A method of obtaining these polyhedral, or
crystal, harmonics using binary invariants is presented which has computational
advantages over those bas... | [
{
"created": "Fri, 18 Sep 2009 17:57:41 GMT",
"version": "v1"
},
{
"created": "Sun, 20 Sep 2009 09:41:49 GMT",
"version": "v2"
},
{
"created": "Sat, 26 Sep 2009 19:28:27 GMT",
"version": "v3"
}
] | 2009-09-26 | [
[
"Dowker",
"J. S.",
""
]
] | Laplacian eigenmodes on homogeneous Clifford--Klein factors of the three--sphere are obtained as pullbacks of harmonics on the orbifolded two--sphere using the Hopf map. A method of obtaining these polyhedral, or crystal, harmonics using binary invariants is presented which has computational advantages over those based... |
1705.03068 | Justin Ripley | Justin L. Ripley, Kent Yagi | Black hole perturbation under 2 + 2 decomposition in the action | 35 pages, no figures | Phys. Rev. D 97, 024009 (2018) | 10.1103/PhysRevD.97.024009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole perturbation theory is useful for studying the stability of black
holes and calculating ringdown gravitational waves after the collision of two
black holes. Most previous calculations were carried out at the level of the
field equations instead of the action. In this work, we compute the
Einstein-Hilbert a... | [
{
"created": "Mon, 8 May 2017 20:05:00 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Dec 2017 16:21:49 GMT",
"version": "v2"
}
] | 2018-01-17 | [
[
"Ripley",
"Justin L.",
""
],
[
"Yagi",
"Kent",
""
]
] | Black hole perturbation theory is useful for studying the stability of black holes and calculating ringdown gravitational waves after the collision of two black holes. Most previous calculations were carried out at the level of the field equations instead of the action. In this work, we compute the Einstein-Hilbert act... |
1604.01793 | Mahamat Saleh | Mahamat Saleh, Bouetou Bouetou Thomas and Kofane Timoleon Crepin | Hawking radiation from a five-dimensional Lovelock black hole | 8 pages, 3 figures. arXiv admin note: text overlap with
arXiv:0808.1735 by other authors | Front. Phys. 10 (5) , 100401 (2015) | 10.1007/s11467-015-0497-6 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate Hawking radiation from a five-dimensional Lovelock black hole
using the Hamilton-Jacobi method. The behavior of the rate of radiation is
plotted for various values of the ultraviolet correction parameter and the
cosmological constant. The results show that, owing to the ultraviolet
correction and the p... | [
{
"created": "Wed, 6 Apr 2016 20:08:32 GMT",
"version": "v1"
}
] | 2016-04-08 | [
[
"Saleh",
"Mahamat",
""
],
[
"Thomas",
"Bouetou Bouetou",
""
],
[
"Crepin",
"Kofane Timoleon",
""
]
] | We investigate Hawking radiation from a five-dimensional Lovelock black hole using the Hamilton-Jacobi method. The behavior of the rate of radiation is plotted for various values of the ultraviolet correction parameter and the cosmological constant. The results show that, owing to the ultraviolet correction and the pre... |
gr-qc/0411096 | Homer G. Ellis | Homer G. Ellis | The warp drive and antigravity | 6 pages, AMSTeX, 1 Encapsulated PostScript figure | null | null | null | gr-qc | null | The warp drive envisioned by Alcubierre that can move a spaceship faster than
light can, with modification, levitate it as if it were lighter than light,
even allow it to go below a black hole's horizon and return unscathed.
Wormhole-like versions of the author's `drainhole' (1973) might provide the
drive, in the for... | [
{
"created": "Fri, 19 Nov 2004 05:26:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ellis",
"Homer G.",
""
]
] | The warp drive envisioned by Alcubierre that can move a spaceship faster than light can, with modification, levitate it as if it were lighter than light, even allow it to go below a black hole's horizon and return unscathed. Wormhole-like versions of the author's `drainhole' (1973) might provide the drive, in the form ... |
2008.05845 | Farruh Atamurotov | Gulmina Zaman Babar, Abdullah Zaman Babar, Farruh Atamurotov | Optical properties of Kerr-Newman spacetime in the presence of plasma | 10 pages, 8 figures, some mistakes are corrected | Eur. Phys. J. C 80 (2020) 761; Eur. Phys. J. C 82 (2022) 405
(Erratum) | 10.1140/epjc/s10052-020-8346-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have studied the null geodesics in the background of the Kerr-Newman black
hole veiled by a plasma medium using the Hamilton-Jacobi method. The in uence
of black hole's charge and plasma parameters on the effective potential and the
generic photon orbits has been investigated. Furthermore, our discussion
embodies ... | [
{
"created": "Thu, 13 Aug 2020 12:08:08 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Jul 2021 18:44:48 GMT",
"version": "v2"
},
{
"created": "Thu, 9 Jun 2022 09:32:25 GMT",
"version": "v3"
}
] | 2022-06-10 | [
[
"Babar",
"Gulmina Zaman",
""
],
[
"Babar",
"Abdullah Zaman",
""
],
[
"Atamurotov",
"Farruh",
""
]
] | We have studied the null geodesics in the background of the Kerr-Newman black hole veiled by a plasma medium using the Hamilton-Jacobi method. The in uence of black hole's charge and plasma parameters on the effective potential and the generic photon orbits has been investigated. Furthermore, our discussion embodies th... |
1408.3789 | Lap-Ming Lin | T. K. Chan, Y.-H. Sham, P. T. Leung, L.-M. Lin | Multipolar universal relations between f-mode frequency and tidal
deformability of compact stars | Minor changes to match the published version | Phys.Rev.D90,124023,2014 | 10.1103/PhysRevD.90.124023 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Though individual stellar parameters of compact stars usually demonstrate
obvious dependence on the equation of state (EOS), EOS-insensitive universal
formulas relating these parameters remarkably exist. In the present paper, we
explore the interrelationship between two such formulas, namely the $f$-$I$
relation conn... | [
{
"created": "Sun, 17 Aug 2014 03:22:36 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jan 2015 06:24:24 GMT",
"version": "v2"
}
] | 2015-06-22 | [
[
"Chan",
"T. K.",
""
],
[
"Sham",
"Y. -H.",
""
],
[
"Leung",
"P. T.",
""
],
[
"Lin",
"L. -M.",
""
]
] | Though individual stellar parameters of compact stars usually demonstrate obvious dependence on the equation of state (EOS), EOS-insensitive universal formulas relating these parameters remarkably exist. In the present paper, we explore the interrelationship between two such formulas, namely the $f$-$I$ relation connec... |
2110.15380 | William H. Kinney | William H. Kinney, Nina K. Stein (Univ. at Buffalo, SUNY) | Cyclic Cosmology and Geodesic Completeness | 4 pages, 3 figures (V4: Version accepted by JCAP) | null | 10.1088/1475-7516/2022/06/011 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider recently proposed bouncing cosmological models for which the
Hubble parameter is periodic in time, but the scale factor grows from one cycle
to the next as a mechanism for shedding entropy. Since the scale factor for a
flat universe is equivalent to an overall conformal factor, it has been argued
that thi... | [
{
"created": "Thu, 28 Oct 2021 18:03:10 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Nov 2021 17:24:18 GMT",
"version": "v2"
},
{
"created": "Fri, 14 Jan 2022 20:52:07 GMT",
"version": "v3"
},
{
"created": "Tue, 3 May 2022 18:09:23 GMT",
"version": "v4"
}
] | 2023-06-14 | [
[
"Kinney",
"William H.",
"",
"Univ. at Buffalo, SUNY"
],
[
"Stein",
"Nina K.",
"",
"Univ. at Buffalo, SUNY"
]
] | We consider recently proposed bouncing cosmological models for which the Hubble parameter is periodic in time, but the scale factor grows from one cycle to the next as a mechanism for shedding entropy. Since the scale factor for a flat universe is equivalent to an overall conformal factor, it has been argued that this ... |
2001.08568 | Davood Momeni Dr | Davood Momeni | Unrivaled Quantum Vacuum in the Primordial Universe | version accepted in "Int. J. Mod. Phys. A (IJMPA)", major revision,
references added+discussions | International Journal of Modern Physics A Vol. 36 (2021) 2150002 | 10.1142/S0217751X21500020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a primordial universe pre(post)-inflationary era , there could be phases
of early universe made of cold gas baryons, radiation and early post
inflationary cosmological constant. I showed that in the baryonic epoch, the
quantum vacuum is unique. By using the standard quantization scheme for a
massive minimally coup... | [
{
"created": "Wed, 22 Jan 2020 17:58:44 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Feb 2020 17:40:55 GMT",
"version": "v2"
},
{
"created": "Sun, 8 Nov 2020 05:22:01 GMT",
"version": "v3"
}
] | 2021-01-11 | [
[
"Momeni",
"Davood",
""
]
] | In a primordial universe pre(post)-inflationary era , there could be phases of early universe made of cold gas baryons, radiation and early post inflationary cosmological constant. I showed that in the baryonic epoch, the quantum vacuum is unique. By using the standard quantization scheme for a massive minimally couple... |
2003.04161 | Taimur Mohammadi | Taimur Mohammadi and Behrooz Malekolkalami | The Power Spectrum Of Gravitational Waves In Anisotropic Universe | This article was uploaded to the arXiv with a different title and
number, arXiv:2007.06691 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the predictions from simple inflation models is a stochastic
background of gravitational waves (or literally what is called the Primordial
Gravitational Waves (\textbf{PGW})) with a nearly scale--invariant spectrum. In
this work, we consider these waves arising from perturbing the Anisotropic
background (Bianc... | [
{
"created": "Mon, 9 Mar 2020 14:15:51 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Jul 2021 20:56:24 GMT",
"version": "v2"
},
{
"created": "Mon, 5 Jul 2021 17:30:23 GMT",
"version": "v3"
},
{
"created": "Wed, 1 Dec 2021 20:02:53 GMT",
"version": "v4"
},
{
"creat... | 2022-07-19 | [
[
"Mohammadi",
"Taimur",
""
],
[
"Malekolkalami",
"Behrooz",
""
]
] | One of the predictions from simple inflation models is a stochastic background of gravitational waves (or literally what is called the Primordial Gravitational Waves (\textbf{PGW})) with a nearly scale--invariant spectrum. In this work, we consider these waves arising from perturbing the Anisotropic background (Bianchi... |
2109.07850 | Deaglan Bartlett | Deaglan J. Bartlett, Harry Desmond, Pedro G. Ferreira, Jens Jasche | Constraints on quantum gravity and the photon mass from gamma ray bursts | 6 pages, 1 figure, 1 table, accepted for publication in Physical
Review D | Phys. Rev. D 104, 103516 (2021) | 10.1103/PhysRevD.104.103516 | null | gr-qc astro-ph.CO astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lorentz invariance violation in quantum gravity (QG) models or a nonzero
photon mass, $m_\gamma$, would lead to an energy-dependent propagation speed
for photons, such that photons of different energies from a distant source
would arrive at different times, even if they were emitted simultaneously. By
developing sour... | [
{
"created": "Thu, 16 Sep 2021 10:28:39 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Nov 2021 10:15:38 GMT",
"version": "v2"
}
] | 2021-11-19 | [
[
"Bartlett",
"Deaglan J.",
""
],
[
"Desmond",
"Harry",
""
],
[
"Ferreira",
"Pedro G.",
""
],
[
"Jasche",
"Jens",
""
]
] | Lorentz invariance violation in quantum gravity (QG) models or a nonzero photon mass, $m_\gamma$, would lead to an energy-dependent propagation speed for photons, such that photons of different energies from a distant source would arrive at different times, even if they were emitted simultaneously. By developing source... |
gr-qc/0210105 | Roman A. Konoplya | R.A.Konoplya | Massive charged scalar field in a Reissner-Nordstrom black hole
background: quasinormal ringing | 7 pages, LaTeX, 6 figures | Phys.Lett. B550 (2002) 117-120 | 10.1016/S0370-2693(02)02974-X | null | gr-qc | null | We compute characteristic (quasinormal) frequencies corresponding to decay of
a massive charged scalar field in a Reissner-Nordstrom black hole background.
It proves that, contrary to the behavior at very late times, at the stage of
quasinormal ringing the neutral perturbations will damp slower than the charged
ones.... | [
{
"created": "Wed, 30 Oct 2002 17:04:30 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Oct 2002 18:09:59 GMT",
"version": "v2"
},
{
"created": "Wed, 13 Nov 2002 17:09:03 GMT",
"version": "v3"
}
] | 2009-11-07 | [
[
"Konoplya",
"R. A.",
""
]
] | We compute characteristic (quasinormal) frequencies corresponding to decay of a massive charged scalar field in a Reissner-Nordstrom black hole background. It proves that, contrary to the behavior at very late times, at the stage of quasinormal ringing the neutral perturbations will damp slower than the charged ones. I... |
1305.4624 | Shahen Hacyan | Shahen Hacyan | Interaction of light with gravitational waves | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The physical properties of electromagnetic waves in the presence of a
gravitational plane wave are analyzed. Formulas for the Stokes parameters
describing the polarization of light are obtained in closed form. The
particular case of a constant amplitude gravitational wave is worked out
explicitly.
| [
{
"created": "Mon, 20 May 2013 19:54:35 GMT",
"version": "v1"
}
] | 2013-05-21 | [
[
"Hacyan",
"Shahen",
""
]
] | The physical properties of electromagnetic waves in the presence of a gravitational plane wave are analyzed. Formulas for the Stokes parameters describing the polarization of light are obtained in closed form. The particular case of a constant amplitude gravitational wave is worked out explicitly. |
2103.02580 | Jo\~ao Lu\'is Rosa | Jo\~ao Lu\'is Rosa, Francisco S. N. Lobo, Diego Rubiera-Garcia | Sudden singularities in generalized hybrid metric-Palatini cosmologies | v2: 20 pages, 3 figures; matches published version in JCAP format | JCAP07(2021)009 | 10.1088/1475-7516/2021/07/009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we explore cosmological sudden singularities arising in the
dynamically equivalent scalar-tensor representation of generalized hybrid
metric-Palatini gravity. Using a FLRW background, we show that the structure of
the field equations prevents sudden singularities from arising at time
derivatives of the ... | [
{
"created": "Wed, 3 Mar 2021 18:23:56 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Jul 2021 08:07:53 GMT",
"version": "v2"
}
] | 2021-07-12 | [
[
"Rosa",
"João Luís",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
]
] | In this work, we explore cosmological sudden singularities arising in the dynamically equivalent scalar-tensor representation of generalized hybrid metric-Palatini gravity. Using a FLRW background, we show that the structure of the field equations prevents sudden singularities from arising at time derivatives of the sc... |
1705.01138 | David Kofro\v{n} | David Kofro\v{n} | Cosmic strings in axisymmetric black hole spacetimes; the C--metric
"engines" | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The interpretation of so-called cosmic string in black hole spacetimes has
settled down to an unsatisfactory state.
In this article we try to provide a different model for these cosmic strings
by explicit construction of these spacetimes from the Bonnor rocket solution.
It is shown that the correct stress-energy te... | [
{
"created": "Tue, 2 May 2017 18:45:32 GMT",
"version": "v1"
}
] | 2017-05-04 | [
[
"Kofroň",
"David",
""
]
] | The interpretation of so-called cosmic string in black hole spacetimes has settled down to an unsatisfactory state. In this article we try to provide a different model for these cosmic strings by explicit construction of these spacetimes from the Bonnor rocket solution. It is shown that the correct stress-energy tensor... |
1406.4511 | Neil J. Cornish | Neil J. Cornish and Rutger van Haasteren | Mapping the nano-Hertz gravitational wave sky | 5 pages, 3 figures | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe a new method for extracting gravitational wave signals from
pulsar timing data. We show that any gravitational wave signal can be
decomposed into an orthogonal set of sky maps, with the number of maps equal to
the number of pulsars in the timing array. These maps may be used as a basis to
construct gravit... | [
{
"created": "Tue, 17 Jun 2014 20:00:24 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jun 2014 18:28:53 GMT",
"version": "v2"
}
] | 2014-06-20 | [
[
"Cornish",
"Neil J.",
""
],
[
"van Haasteren",
"Rutger",
""
]
] | We describe a new method for extracting gravitational wave signals from pulsar timing data. We show that any gravitational wave signal can be decomposed into an orthogonal set of sky maps, with the number of maps equal to the number of pulsars in the timing array. These maps may be used as a basis to construct gravitat... |
2303.12572 | Angela D. V. Di Virgilio dr | A. D. V. Di Virgilio | Status of the GINGER project | 5 oages and 1 fugure, Proceedings of the Ninth Meeting on CPT and
Lorentz Symmetry (CPT'22), Indiana University, Bloomington, May 17-26, 2022 | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by/4.0/ | GINGER (Gyroscopes IN GEneral Relativity), based on an array of large
dimension ring laser gyroscopes, is aiming at measuring in the Gran Sasso
underground laboratory the Earth angular velocity with unprecedented
sensitivity in order to record the general relativity effects on top of the
Earth crust; 1 part $10^9$ of... | [
{
"created": "Wed, 22 Mar 2023 13:57:15 GMT",
"version": "v1"
}
] | 2023-03-23 | [
[
"Di Virgilio",
"A. D. V.",
""
]
] | GINGER (Gyroscopes IN GEneral Relativity), based on an array of large dimension ring laser gyroscopes, is aiming at measuring in the Gran Sasso underground laboratory the Earth angular velocity with unprecedented sensitivity in order to record the general relativity effects on top of the Earth crust; 1 part $10^9$ of t... |
2401.17376 | Marian Boguna | Marian Boguna and Dmitri Krioukov | Measuring spatial distances in causal sets via causal overlaps | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Causal set theory is perhaps the most minimalistic approach to quantum
gravity, in the sense that it makes next to zero assumptions about the
structure of spacetime below the Planck scale. Yet even with this minimalism,
the continuum limit is still a major challenge in causal sets. One aspect of
this challenge is the... | [
{
"created": "Tue, 30 Jan 2024 19:03:12 GMT",
"version": "v1"
},
{
"created": "Thu, 30 May 2024 10:16:37 GMT",
"version": "v2"
}
] | 2024-05-31 | [
[
"Boguna",
"Marian",
""
],
[
"Krioukov",
"Dmitri",
""
]
] | Causal set theory is perhaps the most minimalistic approach to quantum gravity, in the sense that it makes next to zero assumptions about the structure of spacetime below the Planck scale. Yet even with this minimalism, the continuum limit is still a major challenge in causal sets. One aspect of this challenge is the m... |
0805.3963 | Francesco Cianfrani dr | Francesco Cianfrani, Valentino Lacquaniti, Giovanni Montani | Particles and fields within a unification scheme | 10 pages, to appear in the Proceedings of the X Italian-Korean
Symposium on Relativistic Astrophysics, held in Pescara (Italy) on June 25-30
2007 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss properties of particles and fields in a multi-dimensional
space-time, where the geometrization of gauge interactions can be performed.
For instance, in a 5-dimensional Kaluza-Klein manifold we argue that the motion
of charged spinning bodies is obtain in a Papapetrou-like formulation. As far
as spinors are... | [
{
"created": "Mon, 26 May 2008 13:56:25 GMT",
"version": "v1"
}
] | 2008-05-27 | [
[
"Cianfrani",
"Francesco",
""
],
[
"Lacquaniti",
"Valentino",
""
],
[
"Montani",
"Giovanni",
""
]
] | We discuss properties of particles and fields in a multi-dimensional space-time, where the geometrization of gauge interactions can be performed. For instance, in a 5-dimensional Kaluza-Klein manifold we argue that the motion of charged spinning bodies is obtain in a Papapetrou-like formulation. As far as spinors are c... |
1904.05380 | Long-Long Feng | Qianfan Wu, Weishan Zhu and Longlong Feng | Testing the Wave-Particle Duality of Gravitational Wave Using the
Spin-Orbital-Hall Effect of Structured Light | 12 pages, 2 figures, totally revised version with the new title,
method (based on the developed optical Dirac equation), figures, expanded
results and perspectives | Universe 2022, 8, 535 | 10.3390/universe8100535 | null | gr-qc astro-ph.HE quant-ph | http://creativecommons.org/licenses/by/4.0/ | Probing the polarization of gravitational waves (GWs) would provide an
evidence of graviton, indicating the quantization of gravity. Motivated by the
next generation of gravitational wave detectors, we make an attempt to study
the possible helicity coupling of structured lights to GWs. With the analogue
between of gr... | [
{
"created": "Wed, 10 Apr 2019 18:24:23 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Apr 2019 17:19:02 GMT",
"version": "v2"
},
{
"created": "Mon, 7 Nov 2022 03:17:51 GMT",
"version": "v3"
}
] | 2022-11-08 | [
[
"Wu",
"Qianfan",
""
],
[
"Zhu",
"Weishan",
""
],
[
"Feng",
"Longlong",
""
]
] | Probing the polarization of gravitational waves (GWs) would provide an evidence of graviton, indicating the quantization of gravity. Motivated by the next generation of gravitational wave detectors, we make an attempt to study the possible helicity coupling of structured lights to GWs. With the analogue between of grav... |
gr-qc/0009027 | Cesar Eduardo Mora Ley | Luis O. Pimentel, Cesar Mora (Universidad Autonoma
Metropolitana-Iztapalapa, Mexico) | Quantum Cosmology in Bergmann-Wagoner Scalar-tensor Gravitational Theory | 22 pages, LaTeX file | null | null | null | gr-qc | null | The Wheeler-DeWitt equation is solved for the Bergmann-Wagoner scalar-tensor
gravitational theory in the case of Friedmann-Robertson- Walker cosmological
model. We present solutions for several cosmological functions: i)
\lambda(\phi)=0, ii) \lambda(\phi)=3\Lambda_0\phi and iii) a more complex
\lambda(\phi), that dep... | [
{
"created": "Fri, 8 Sep 2000 23:32:30 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pimentel",
"Luis O.",
"",
"Universidad Autonoma\n Metropolitana-Iztapalapa, Mexico"
],
[
"Mora",
"Cesar",
"",
"Universidad Autonoma\n Metropolitana-Iztapalapa, Mexico"
]
] | The Wheeler-DeWitt equation is solved for the Bergmann-Wagoner scalar-tensor gravitational theory in the case of Friedmann-Robertson- Walker cosmological model. We present solutions for several cosmological functions: i) \lambda(\phi)=0, ii) \lambda(\phi)=3\Lambda_0\phi and iii) a more complex \lambda(\phi), that depen... |
2311.02063 | Graham Cox | Ivan Booth, Graham Cox, Juan Margalef-Bentabol | Symmetry and instability of marginally outer trapped surfaces | 17 pages, 2 figures. Additional references added in v2 | Classical and Quantum Gravity, 41 (2024) 115003 | 10.1088/1361-6382/ad3dab | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an initial data set having a continuous symmetry and a marginally
outer trapped surface (MOTS) that is not preserved by this symmetry. We show
that such a MOTS is unstable except in an exceptional case. In non-rotating
cases we provide a Courant-type lower bound on the number of unstable
eigenvalues. Thes... | [
{
"created": "Fri, 3 Nov 2023 17:47:23 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Mar 2024 19:19:28 GMT",
"version": "v2"
}
] | 2024-05-03 | [
[
"Booth",
"Ivan",
""
],
[
"Cox",
"Graham",
""
],
[
"Margalef-Bentabol",
"Juan",
""
]
] | We consider an initial data set having a continuous symmetry and a marginally outer trapped surface (MOTS) that is not preserved by this symmetry. We show that such a MOTS is unstable except in an exceptional case. In non-rotating cases we provide a Courant-type lower bound on the number of unstable eigenvalues. These ... |
1705.03401 | Yong Cai | Yong Cai and Yun-Song Piao | A covariant Lagrangian for stable nonsingular bounce | 12 pages, 6 figures; published in JHEP; an Appendix and references
added | JHEP 1709 (2017) 027 | 10.1007/JHEP09(2017)027 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nonsingular bounce models usually suffer from the ghost or gradient
instabilities, as has been proved recently. In this paper, we propose a
covariant effective theory for stable nonsingular bounce, which has the
quadratic order of the second order derivative of the field $\phi$ but the
background set only by $P(\... | [
{
"created": "Tue, 9 May 2017 16:03:01 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Sep 2017 07:52:24 GMT",
"version": "v2"
}
] | 2017-09-14 | [
[
"Cai",
"Yong",
""
],
[
"Piao",
"Yun-Song",
""
]
] | The nonsingular bounce models usually suffer from the ghost or gradient instabilities, as has been proved recently. In this paper, we propose a covariant effective theory for stable nonsingular bounce, which has the quadratic order of the second order derivative of the field $\phi$ but the background set only by $P(\ph... |
gr-qc/0109087 | Y. Bisabr | Y. Bisabr, H. Salehi | Mechanism for a Decaying Cosmological Constant | 6 pages, no figure | Class.Quant.Grav. 19 (2002) 2369-2374 | 10.1088/0264-9381/19/9/303 | null | gr-qc | null | A mechanism is introduced to reduce a large cosmological constant to a
sufficiently small value consistent with observational upper limit. The basic
ingradient in this mechanism is a distinction which has been made between the
two unit systems used on cosmology and particle physics. We have used a
conformal invariant... | [
{
"created": "Wed, 26 Sep 2001 07:26:57 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Bisabr",
"Y.",
""
],
[
"Salehi",
"H.",
""
]
] | A mechanism is introduced to reduce a large cosmological constant to a sufficiently small value consistent with observational upper limit. The basic ingradient in this mechanism is a distinction which has been made between the two unit systems used on cosmology and particle physics. We have used a conformal invariant g... |
gr-qc/0308053 | Lorenzo Iorio | Lorenzo Iorio | On the impossibility of measuring a galvano-gravitomagnetic effect with
current carrying semiconductors in a space-based experiment | LaTex2e, 7 pages, 1 table, no figures. Small typos corrected.
Numerical error corrected in eq. (15) and eq. (16). One reference replaced.
Accepted for publication in Classical and Quantum Gravity | Class.Quant.Grav. 21 (2004) 2065-2070 | 10.1088/0264-9381/21/8/010 | null | gr-qc | null | In this paper we investigate the feasibility of a recently proposed
space-based experiment aimed to the detection of the effect of the Earth
gravitomagnetic field in spaceborne semiconductors carrying radial electric
currents and following identical circular equatorial orbits along opposite
directions. It turns out t... | [
{
"created": "Sat, 16 Aug 2003 22:05:11 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Oct 2003 13:32:09 GMT",
"version": "v2"
},
{
"created": "Thu, 5 Feb 2004 06:58:15 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Iorio",
"Lorenzo",
""
]
] | In this paper we investigate the feasibility of a recently proposed space-based experiment aimed to the detection of the effect of the Earth gravitomagnetic field in spaceborne semiconductors carrying radial electric currents and following identical circular equatorial orbits along opposite directions. It turns out tha... |
2005.01249 | Junbin Li | Junbin Li, He Mei | A construction of collapsing spacetimes in vacuum | 47 pages, 10 figures, accepted version | null | 10.1007/s00220-020-03807-z | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we construct a class of collapsing spacetimes in vacuum
without any symmetries. The spacetime contains a black hole region which is
bounded from the past by the future event horizon. It possesses a Cauchy
hypersurface with trivial topology which is located outside the black hole
region. Based on existi... | [
{
"created": "Mon, 4 May 2020 03:35:58 GMT",
"version": "v1"
}
] | 2020-08-26 | [
[
"Li",
"Junbin",
""
],
[
"Mei",
"He",
""
]
] | In this paper, we construct a class of collapsing spacetimes in vacuum without any symmetries. The spacetime contains a black hole region which is bounded from the past by the future event horizon. It possesses a Cauchy hypersurface with trivial topology which is located outside the black hole region. Based on existing... |
1008.1184 | Susumu Okazawa | Satoshi Iso, Susumu Okazawa, Sen Zhang | Non-Equilibrium Fluctuations of Black Hole Horizons | 4 pages | null | 10.1016/j.physletb.2011.09.114 | null | gr-qc cond-mat.stat-mech hep-ph hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate non-equilibrium nature of fluctuations of black hole horizons
by applying the fluctuation theorems and the Jarzynski equality developed in
the non-equilibrium statistical physics. These theorems applied to space-times
with black hole horizons lead to the generalized second law of thermodynamics.
It is ... | [
{
"created": "Fri, 6 Aug 2010 13:20:05 GMT",
"version": "v1"
}
] | 2015-05-19 | [
[
"Iso",
"Satoshi",
""
],
[
"Okazawa",
"Susumu",
""
],
[
"Zhang",
"Sen",
""
]
] | We investigate non-equilibrium nature of fluctuations of black hole horizons by applying the fluctuation theorems and the Jarzynski equality developed in the non-equilibrium statistical physics. These theorems applied to space-times with black hole horizons lead to the generalized second law of thermodynamics. It is al... |
0911.2621 | Sujitkumar Chatterjee | S. Chatterjee | Primordial nucleosynthesis in higher dimensional cosmology | null | null | 10.1017/S1743921310003844 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate nucleosynthesis and element formation in the early universe in
the framework of higher dimensional cosmology. For this purpose we utilize a
previous solution of the present author, which may be termed as the generalized
Friedmann-Robertson-Walker model. We find that temperature decays less rapidly
in h... | [
{
"created": "Fri, 13 Nov 2009 14:38:58 GMT",
"version": "v1"
}
] | 2015-05-14 | [
[
"Chatterjee",
"S.",
""
]
] | We investigate nucleosynthesis and element formation in the early universe in the framework of higher dimensional cosmology. For this purpose we utilize a previous solution of the present author, which may be termed as the generalized Friedmann-Robertson-Walker model. We find that temperature decays less rapidly in hig... |
0712.3397 | Yongli Ping | Yongli Ping, Lixin Xu, Baorong Chang and Hongya Liu | Using Energy Conditions to Distinguish Brane Models and Study Brane
Matter | 5pages, no figures; Accepted by Communications in Theoretical Physics | Commun.Theor.Phys.50:383-386,2008 | 10.1088/0253-6102/50/2/21 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Current universe (assumed here to be normal matter on the brane) is
pressureless from observations. In this case the energy condition is
$\rho_0\geq0$ and $p_0=0$. By using this condition, brane models can be
distinguished. Then, assuming arbitrary component of matter in DGP model, we
use four known energy conditions... | [
{
"created": "Thu, 20 Dec 2007 12:49:33 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jun 2008 03:08:02 GMT",
"version": "v2"
}
] | 2008-12-18 | [
[
"Ping",
"Yongli",
""
],
[
"Xu",
"Lixin",
""
],
[
"Chang",
"Baorong",
""
],
[
"Liu",
"Hongya",
""
]
] | Current universe (assumed here to be normal matter on the brane) is pressureless from observations. In this case the energy condition is $\rho_0\geq0$ and $p_0=0$. By using this condition, brane models can be distinguished. Then, assuming arbitrary component of matter in DGP model, we use four known energy conditions t... |
2012.09162 | Banafsheh Shiralilou | Banafsheh Shiralilou, Tanja Hinderer, Samaya Nissanke, N\'estor Ortiz,
Helvi Witek | Nonlinear curvature effects in gravitational waves from inspiralling
black hole binaries | 7 pages, 2 figure, Accepted as Letter in Physical Review D | Phys. Rev. D 103, 121503 (2021) | 10.1103/PhysRevD.103.L121503 | null | gr-qc astro-ph.HE hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | Gravitational waves (GWs) from merging black holes allow for unprecedented
probes of strong-field gravity. Testing gravity in this regime requires
accurate predictions of gravitational waveform templates in viable extensions
of General Relativity. We concentrate on scalar Gauss-Bonnet gravity, one of
the most compell... | [
{
"created": "Wed, 16 Dec 2020 18:57:11 GMT",
"version": "v1"
},
{
"created": "Fri, 28 May 2021 17:29:37 GMT",
"version": "v2"
},
{
"created": "Wed, 2 Jun 2021 09:29:01 GMT",
"version": "v3"
}
] | 2021-06-30 | [
[
"Shiralilou",
"Banafsheh",
""
],
[
"Hinderer",
"Tanja",
""
],
[
"Nissanke",
"Samaya",
""
],
[
"Ortiz",
"Néstor",
""
],
[
"Witek",
"Helvi",
""
]
] | Gravitational waves (GWs) from merging black holes allow for unprecedented probes of strong-field gravity. Testing gravity in this regime requires accurate predictions of gravitational waveform templates in viable extensions of General Relativity. We concentrate on scalar Gauss-Bonnet gravity, one of the most compellin... |
1502.04911 | Christian Corda Prof. | Christian Corda | Interpretation of M\"ossbauer experiment in a rotating system: a new
proof for general relativity | 9 pages, 1 figure, accepted for publication in Annals of Physics | Ann. Phys. 355, 360 (2015) | 10.1016/j.aop.2015.02.021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A historical experiment by K\"undig on the transverse Doppler shift in a
rotating system measured with the M\"ossbauer effect has been recently first
re-analyzed and then replied [1,2]. The results have shown that a correct
re-processing of K\"undig's experimental data gives a deviation of a relative
redshift between... | [
{
"created": "Sat, 14 Feb 2015 22:17:01 GMT",
"version": "v1"
}
] | 2015-03-18 | [
[
"Corda",
"Christian",
""
]
] | A historical experiment by K\"undig on the transverse Doppler shift in a rotating system measured with the M\"ossbauer effect has been recently first re-analyzed and then replied [1,2]. The results have shown that a correct re-processing of K\"undig's experimental data gives a deviation of a relative redshift between e... |
2307.10940 | Mostafa Bousder Dr. | M. Bousder, A.Riadsolh, A. El Fatimy, M. El Belkacemi and H.
Ez-Zahraouy | Implications of the NANOGrav results for primordial black holes and
Hubble tension | null | null | null | null | gr-qc astro-ph.CO astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The purpose of this work is to investigate the formation and evaporation of
the primordial black holes in the inflationary scenarios. Thermodynamic
parameters such as mass, temperature and entropy are expressed in terms of
NANOGrav frequency. By numerical calculations we show that the constraint on
the mass range $10... | [
{
"created": "Thu, 20 Jul 2023 15:11:12 GMT",
"version": "v1"
}
] | 2023-07-21 | [
[
"Bousder",
"M.",
""
],
[
"Riadsolh",
"A.",
""
],
[
"Fatimy",
"A. El",
""
],
[
"Belkacemi",
"M. El",
""
],
[
"Ez-Zahraouy",
"H.",
""
]
] | The purpose of this work is to investigate the formation and evaporation of the primordial black holes in the inflationary scenarios. Thermodynamic parameters such as mass, temperature and entropy are expressed in terms of NANOGrav frequency. By numerical calculations we show that the constraint on the mass range $10^{... |
1901.04728 | David McNutt | D. D. McNutt and M. T. Aadne | $\mathcal{I}$-Preserving Diffeomorphisms of Lorentzian Manifolds | minor corrections, 20 pages | Journal of Mathematical Physics, 60, 032501 (2019) | 10.1063/1.5050595 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the existence of one parameter groups of diffeomorphisms whose
infinitesimal generators annihilate all scalar polynomial curvature invariants
through the application of the Lie derivative, known as
$\mathcal{I}$-preserving diffeomorphisms. Such mappings are a generalization of
isometries and appear to be r... | [
{
"created": "Tue, 15 Jan 2019 09:34:20 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Apr 2019 13:52:17 GMT",
"version": "v2"
}
] | 2019-04-16 | [
[
"McNutt",
"D. D.",
""
],
[
"Aadne",
"M. T.",
""
]
] | We examine the existence of one parameter groups of diffeomorphisms whose infinitesimal generators annihilate all scalar polynomial curvature invariants through the application of the Lie derivative, known as $\mathcal{I}$-preserving diffeomorphisms. Such mappings are a generalization of isometries and appear to be rel... |
1811.01562 | Cosimo Bambi | Carlos A. Benavides-Gallego, A. A. Abdujabbarov, Cosimo Bambi | Rotating and non-linear magnetic-charged black hole surrounded by
quintessence | 17 pages, 10 figures. v2: refereed version | Phys. Rev. D 101, 044038 (2020) | 10.1103/PhysRevD.101.044038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we derived a rotating and non-linear magnetic-charged black hole
surrounded by quintessence using the Newman-Janis algorithm. Considering the
state parameter $\omega_q=-3/2$, we studied the event horizons, the ergosphere,
and the ZAMO. We found that the existence of the outer horizon is constrained
by th... | [
{
"created": "Mon, 5 Nov 2018 09:17:38 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Feb 2020 15:58:34 GMT",
"version": "v2"
}
] | 2020-02-21 | [
[
"Benavides-Gallego",
"Carlos A.",
""
],
[
"Abdujabbarov",
"A. A.",
""
],
[
"Bambi",
"Cosimo",
""
]
] | In this work we derived a rotating and non-linear magnetic-charged black hole surrounded by quintessence using the Newman-Janis algorithm. Considering the state parameter $\omega_q=-3/2$, we studied the event horizons, the ergosphere, and the ZAMO. We found that the existence of the outer horizon is constrained by the ... |
0802.4320 | Zsuzsanna Marka | The LIGO Scientific Collaboration, Virgo Collaboration | Astrophysically Triggered Searches for Gravitational Waves: Status and
Prospects | null | Class.Quant.Grav.25:114051,2008 | 10.1088/0264-9381/25/11/114051 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In gravitational-wave detection, special emphasis is put onto searches that
focus on cosmic events detected by other types of astrophysical observatories.
The astrophysical triggers, e.g. from gamma-ray and X-ray satellites, optical
telescopes and neutrino observatories, provide a trigger time for analyzing
gravitati... | [
{
"created": "Fri, 29 Feb 2008 04:28:21 GMT",
"version": "v1"
}
] | 2012-08-27 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"Virgo Collaboration",
"",
""
]
] | In gravitational-wave detection, special emphasis is put onto searches that focus on cosmic events detected by other types of astrophysical observatories. The astrophysical triggers, e.g. from gamma-ray and X-ray satellites, optical telescopes and neutrino observatories, provide a trigger time for analyzing gravitation... |
1906.03566 | Anik Rudra | Anik Rudra, Hemwati Nandan, Radouane Gannouji, Soham Chakraborty,
Arindam Kumar Chatterjee | Energy extraction and particle acceleration around a rotating dyonic
black hole in $N=2$, $U(1)^2$ gauged supergravity | 20 pages, 16 figures, 6 tables. Completely new abstract, Conclusion
with major changes to BSW effect are made along with the corrections of few
typos | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper, we explore various gravitational aspects such as energy
extraction (via the Penrose process and Superradiance), particle collisions
around a $\mathcal{N}=2$, $U(1)^2$ dyonic rotating black hole (BH) in the
gauged supergravity model. The impact of the rotation parameter ($a$) and the
gauge coupli... | [
{
"created": "Sun, 9 Jun 2019 04:51:33 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Jun 2019 14:01:17 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Jul 2019 18:12:09 GMT",
"version": "v3"
},
{
"created": "Tue, 3 Mar 2020 11:31:37 GMT",
"version": "v4"
},
{
"crea... | 2020-03-05 | [
[
"Rudra",
"Anik",
""
],
[
"Nandan",
"Hemwati",
""
],
[
"Gannouji",
"Radouane",
""
],
[
"Chakraborty",
"Soham",
""
],
[
"Chatterjee",
"Arindam Kumar",
""
]
] | In the present paper, we explore various gravitational aspects such as energy extraction (via the Penrose process and Superradiance), particle collisions around a $\mathcal{N}=2$, $U(1)^2$ dyonic rotating black hole (BH) in the gauged supergravity model. The impact of the rotation parameter ($a$) and the gauge coupling... |
2009.06096 | Nosratollah Jafari Sonbolabadi | Nosratollah Jafari, Michael R.R. Good | Dispersion relations in finite-boost DSR | 22 pages | Phys. Let. B 809 (2020) 135735 | 10.1016/j.physletb.2020.135735 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find finite-boost transformations DSR theories in first order of the
Planck length $l_p$, by solving differential equations for the modified
generators. We obtain corresponding dispersion relations for these
transformations, which help us classify the DSR theories via four types. The
final type of our classificati... | [
{
"created": "Sun, 13 Sep 2020 22:08:03 GMT",
"version": "v1"
}
] | 2020-09-23 | [
[
"Jafari",
"Nosratollah",
""
],
[
"Good",
"Michael R. R.",
""
]
] | We find finite-boost transformations DSR theories in first order of the Planck length $l_p$, by solving differential equations for the modified generators. We obtain corresponding dispersion relations for these transformations, which help us classify the DSR theories via four types. The final type of our classification... |
gr-qc/0104094 | Valdir B. Bezerra | V. B. Bezerra (UFPb), J. Spinelly (UFPb) and C. Romero (UFPb) | On the extension of Jackiw's scalar theory to (2+1)- dimensional gravity | 11 pages, LATEX file | null | null | null | gr-qc | null | We study some aspects of three-dimensional gravity by extending Jackiw's
scalar theory to (2+1)-dimensions and find a black hole solution. We show that
in in general this teory does not possess a Newtonian limit except for special
metric configurations.
| [
{
"created": "Sat, 28 Apr 2001 12:40:30 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bezerra",
"V. B.",
"",
"UFPb"
],
[
"Spinelly",
"J.",
"",
"UFPb"
],
[
"Romero",
"C.",
"",
"UFPb"
]
] | We study some aspects of three-dimensional gravity by extending Jackiw's scalar theory to (2+1)-dimensions and find a black hole solution. We show that in in general this teory does not possess a Newtonian limit except for special metric configurations. |
1304.7017 | Frank Ohme | Frank Ohme, Alex B. Nielsen, Drew Keppel, Andrew Lundgren | Statistical and systematic errors for gravitational-wave inspiral
signals: A principal component analysis | 16 pages, 7 figures, pdfLaTeX, improved presentation, matches
published version | Phys. Rev. D 88, 042002 (2013) | 10.1103/PhysRevD.88.042002 | AEI-2013-049, LIGO-P1300017 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Identifying the source parameters from a gravitational-wave measurement alone
is limited by our ability to discriminate signals from different sources and
the accuracy of the waveform family employed in the search. Here we address
both issues in the framework of an adapted coordinate system that allows for
linear Fis... | [
{
"created": "Thu, 25 Apr 2013 20:12:08 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Aug 2013 14:58:14 GMT",
"version": "v2"
}
] | 2013-08-21 | [
[
"Ohme",
"Frank",
""
],
[
"Nielsen",
"Alex B.",
""
],
[
"Keppel",
"Drew",
""
],
[
"Lundgren",
"Andrew",
""
]
] | Identifying the source parameters from a gravitational-wave measurement alone is limited by our ability to discriminate signals from different sources and the accuracy of the waveform family employed in the search. Here we address both issues in the framework of an adapted coordinate system that allows for linear Fishe... |
2308.00114 | Jose Pinedo Soto | Valeri P. Frolov, Jose Pinedo Soto | Nonlocal modification of the Kerr metric | 14 pages, 9 figures | null | 10.3390/sym15091771 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the present paper, we discuss a nonlocal modification of the Kerr metric.
Our starting point is the Kerr-Schild form of the Kerr metric
$g_{\mu\nu}=\eta_{\mu\nu}+\Phi l_{\mu}l_{\mu}$. Using Newman's approach we
identify a shear free null congruence $\boldsymbol{l}$ with the generators of
the null cone with apex at... | [
{
"created": "Mon, 31 Jul 2023 19:33:05 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Sep 2023 20:20:27 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Sep 2023 07:17:59 GMT",
"version": "v3"
}
] | 2023-09-21 | [
[
"Frolov",
"Valeri P.",
""
],
[
"Soto",
"Jose Pinedo",
""
]
] | In the present paper, we discuss a nonlocal modification of the Kerr metric. Our starting point is the Kerr-Schild form of the Kerr metric $g_{\mu\nu}=\eta_{\mu\nu}+\Phi l_{\mu}l_{\mu}$. Using Newman's approach we identify a shear free null congruence $\boldsymbol{l}$ with the generators of the null cone with apex at a... |
2205.15735 | Hamid Shabani | Hamid Shabani, Hooman Moradpour, Amir Hadi Ziaie | A dynamical system representation of generalized Rastall gravity | 12 pages, 6 figures | Physics of the Dark Universe 36 (2022) 101047 | 10.1016/j.dark.2022.101047 | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | In this work we study the phase-space analysis of generalized Rastall gravity
(GRG) which has recently been introduced as a modification to the original
version of Rastall gravity (RG). In GRG, the coupling parameter assumes a
dynamical feature and may play the role of dark energy (DE) which is
responsible for the pr... | [
{
"created": "Mon, 30 May 2022 07:48:18 GMT",
"version": "v1"
}
] | 2022-06-01 | [
[
"Shabani",
"Hamid",
""
],
[
"Moradpour",
"Hooman",
""
],
[
"Ziaie",
"Amir Hadi",
""
]
] | In this work we study the phase-space analysis of generalized Rastall gravity (GRG) which has recently been introduced as a modification to the original version of Rastall gravity (RG). In GRG, the coupling parameter assumes a dynamical feature and may play the role of dark energy (DE) which is responsible for the pres... |
2008.02798 | Shin'ichi Hirano | Shin'ichi Hirano, Tsutomu Kobayashi, Daisuke Yamauchi, Shuichiro
Yokoyama | UV sensitive one-loop matter power spectrum in degenerate higher-order
scalar-tensor theories | 18 pages, no figure | Phys. Rev. D 102, 103505 (2020) | 10.1103/PhysRevD.102.103505 | RUP-20-27 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study matter density perturbations up to third order and the one-loop
matter power spectrum in degenerate higher-order scalar-tensor (DHOST) theories
beyond Horndeski. We systematically solve gravitational field equations and
fluid equations order by order, and find three novel shape functions
characterizing the t... | [
{
"created": "Thu, 6 Aug 2020 09:49:58 GMT",
"version": "v1"
}
] | 2020-11-11 | [
[
"Hirano",
"Shin'ichi",
""
],
[
"Kobayashi",
"Tsutomu",
""
],
[
"Yamauchi",
"Daisuke",
""
],
[
"Yokoyama",
"Shuichiro",
""
]
] | We study matter density perturbations up to third order and the one-loop matter power spectrum in degenerate higher-order scalar-tensor (DHOST) theories beyond Horndeski. We systematically solve gravitational field equations and fluid equations order by order, and find three novel shape functions characterizing the thi... |
1310.2374 | Atanu Kumar | Atanu Kumar | Covariant perturbations through a simple non-singular bounce | 17 pages, 10 figures | Phys. Rev. D 89, 084059 (2014) | 10.1103/PhysRevD.89.084059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the evolution of cosmological perturbations through a
nonsingular bouncing universe using covariant perturbation theory and examine
the validity of linear perturbation theory. The bounce is modeled by a two
component perfect fluid. Gauge invariant perturbations are defined in terms of
the comov... | [
{
"created": "Wed, 9 Oct 2013 07:05:16 GMT",
"version": "v1"
},
{
"created": "Thu, 15 May 2014 10:22:47 GMT",
"version": "v2"
}
] | 2014-05-16 | [
[
"Kumar",
"Atanu",
""
]
] | In this paper we study the evolution of cosmological perturbations through a nonsingular bouncing universe using covariant perturbation theory and examine the validity of linear perturbation theory. The bounce is modeled by a two component perfect fluid. Gauge invariant perturbations are defined in terms of the comovin... |
1401.7731 | Philipp Hoehn | Philipp A Hoehn | Quantization of systems with temporally varying discretization II: Local
evolution moves | 37 pages, many figures, 2 appendices (5 pages), additional
clarifications, matches published version | J. Math. Phys. 55, 103507 (2014) | 10.1063/1.4898764 | null | gr-qc hep-lat math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Several quantum gravity approaches and field theory on an evolving lattice
involve a discretization changing dynamics generated by evolution moves. Local
evolution moves in variational discrete systems (1) are a generalization of the
Pachner evolution moves of simplicial gravity models, (2) update only a small
subset... | [
{
"created": "Thu, 30 Jan 2014 04:25:24 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Feb 2014 00:51:05 GMT",
"version": "v2"
},
{
"created": "Mon, 27 Oct 2014 15:37:52 GMT",
"version": "v3"
}
] | 2014-10-28 | [
[
"Hoehn",
"Philipp A",
""
]
] | Several quantum gravity approaches and field theory on an evolving lattice involve a discretization changing dynamics generated by evolution moves. Local evolution moves in variational discrete systems (1) are a generalization of the Pachner evolution moves of simplicial gravity models, (2) update only a small subset o... |
gr-qc/0612190 | Spiros Cotsakis | Spiros Cotsakis and Antonios Tsokaros | Flat, radiation universes with quadratic corrections and asymptotic
analysis | 3 pages, to appear in the Proceedings of the MG11 Conference, Berlin,
July 2006; v2: Minor corrections | null | null | null | gr-qc | null | It was shown long ago by T. V. Ruzmaikina and A. A. Ruzmaikin that within the
framework of a homogeneous and isotropic cosmological model quadratic
corrections of the gravitational field cannot provide solutions that are both
regular initially and go over to Friedmann type at later times. We find here,
by applying a ... | [
{
"created": "Fri, 29 Dec 2006 14:57:29 GMT",
"version": "v1"
},
{
"created": "Sat, 20 Jan 2007 10:51:44 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Cotsakis",
"Spiros",
""
],
[
"Tsokaros",
"Antonios",
""
]
] | It was shown long ago by T. V. Ruzmaikina and A. A. Ruzmaikin that within the framework of a homogeneous and isotropic cosmological model quadratic corrections of the gravitational field cannot provide solutions that are both regular initially and go over to Friedmann type at later times. We find here, by applying a dy... |
2211.14039 | Titus K Mathew | M. Dheepika, Hassan Basari V. T., and Titus K. Mathew | Emergence of cosmic space in Tsallis modified gravity from equilibrium
and non-equilibrium thermodynamic perspective | 22 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we obtain the law of emergence with Tsallis entropy from the
thermodynamic laws. We first derive the law of emergence from the equilibrium
description of the unified first law and Clausius relation. However, it has
been shown that considering Tsallis entropy as the horizon entropy, the
Clausius relatio... | [
{
"created": "Fri, 25 Nov 2022 11:41:40 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Dec 2022 10:57:49 GMT",
"version": "v2"
}
] | 2023-01-02 | [
[
"Dheepika",
"M.",
""
],
[
"T.",
"Hassan Basari V.",
""
],
[
"Mathew",
"Titus K.",
""
]
] | In this paper, we obtain the law of emergence with Tsallis entropy from the thermodynamic laws. We first derive the law of emergence from the equilibrium description of the unified first law and Clausius relation. However, it has been shown that considering Tsallis entropy as the horizon entropy, the Clausius relation ... |
1509.06017 | Norbert Noutchegueme | Norbert Noutchegueme and Eric Magloire Zangue | Global Dynamics for the coupled Einstein-Maxwell system with
pseudo-tensor of pressure on Bianchi spacetimes | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Global existence to the coupled Einstein-Maxwell system which rules the
dynamics of a kind of charged matter with a pseudo-tensor of pressure is
proved, in Bianchi I-VIII spacetimes. We study the geodesics completeness, the
asymptotic behavior, the positivity conditions, and we prove that the problem
is well-posed in... | [
{
"created": "Sun, 20 Sep 2015 14:06:55 GMT",
"version": "v1"
}
] | 2015-09-22 | [
[
"Noutchegueme",
"Norbert",
""
],
[
"Zangue",
"Eric Magloire",
""
]
] | Global existence to the coupled Einstein-Maxwell system which rules the dynamics of a kind of charged matter with a pseudo-tensor of pressure is proved, in Bianchi I-VIII spacetimes. We study the geodesics completeness, the asymptotic behavior, the positivity conditions, and we prove that the problem is well-posed in t... |
2007.00455 | Ayan Banerjee | Ksh. Newton Singh, Ayan Banerjee, S. K. Maurya, Farook Rahaman and
Anirudh Pradhan | Color-flavor locked quark stars in energy-momentum squared gravity | 7 pages, 7 figures; accepted for publication in Phys.Dark Univ | Phys. Dark Univ. Vol. 31, Issue Jan (2021), 100774(6 pages) | 10.1016/j.dark.2021.100774 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Several attempts have been made in the past decades to search for the true
ground state of the dense matter at sufficiently large densities and low
temperatures via compact astrophysical objects. Focusing on strange stars, we
derive the hydrostatic equilibrium assuming a maximally symmetric phase of
homogeneous super... | [
{
"created": "Mon, 29 Jun 2020 11:30:06 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Jan 2021 17:42:44 GMT",
"version": "v2"
}
] | 2021-08-02 | [
[
"Singh",
"Ksh. Newton",
""
],
[
"Banerjee",
"Ayan",
""
],
[
"Maurya",
"S. K.",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Pradhan",
"Anirudh",
""
]
] | Several attempts have been made in the past decades to search for the true ground state of the dense matter at sufficiently large densities and low temperatures via compact astrophysical objects. Focusing on strange stars, we derive the hydrostatic equilibrium assuming a maximally symmetric phase of homogeneous superco... |
0807.1821 | Istvan Racz | Istv\'an R\'acz | On the topology of untrapped surfaces | 9 pages, no figures | Class. Quantum Grav. 26 (2009) 055017 | 10.1088/0264-9381/26/5/055017 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently a simple proof of the generalizations of Hawking's black hole
topology theorem and its application to topological black holes for higher
dimensional ($n\geq 4$) spacetimes was given \cite{rnew}. By applying the
associated new line of argument it is proven here that strictly stable
untrapped surfaces do posse... | [
{
"created": "Fri, 11 Jul 2008 11:11:05 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Nov 2008 00:17:32 GMT",
"version": "v2"
},
{
"created": "Fri, 25 Jun 2010 22:27:37 GMT",
"version": "v3"
}
] | 2010-06-29 | [
[
"Rácz",
"István",
""
]
] | Recently a simple proof of the generalizations of Hawking's black hole topology theorem and its application to topological black holes for higher dimensional ($n\geq 4$) spacetimes was given \cite{rnew}. By applying the associated new line of argument it is proven here that strictly stable untrapped surfaces do possess... |
2210.13239 | Marco Godina | Tullio Levi-Civita | Notion of Parallelism on a Generic Manifold and Consequent Geometrical
Specification of the Riemannian Curvature | 33 pages, Plain TEX | Rend. Circ. Mat. Palermo, (1917), Vol.42 (1), pp. 173-204 | null | null | gr-qc physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With regard to classical differential geometry, this paper written in 1916 by
T. Levi-Civita introduces the notion of parallelism for a Riemannian manifold
of arbitrary dimensions. It also provides a geometrical explanation for the
Riemannian curvature and at the same time significantly reduces the
mathematical forma... | [
{
"created": "Thu, 20 Oct 2022 14:43:58 GMT",
"version": "v1"
}
] | 2022-10-25 | [
[
"Levi-Civita",
"Tullio",
""
]
] | With regard to classical differential geometry, this paper written in 1916 by T. Levi-Civita introduces the notion of parallelism for a Riemannian manifold of arbitrary dimensions. It also provides a geometrical explanation for the Riemannian curvature and at the same time significantly reduces the mathematical formali... |
0907.4325 | Benjamin Bahr | Benjamin Bahr, Bianca Dittrich | Regge calculus from a new angle | 8 pages | New J.Phys.12:033010,2010 | 10.1088/1367-2630/12/3/033010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Regge calculus space time is usually approximated by a triangulation with
flat simplices. We present a formulation using simplices with constant
sectional curvature adjusted to the presence of a cosmological constant. As we
will show such a formulation allows to replace the length variables by 3d or 4d
dihedral an... | [
{
"created": "Fri, 24 Jul 2009 16:03:07 GMT",
"version": "v1"
}
] | 2010-03-25 | [
[
"Bahr",
"Benjamin",
""
],
[
"Dittrich",
"Bianca",
""
]
] | In Regge calculus space time is usually approximated by a triangulation with flat simplices. We present a formulation using simplices with constant sectional curvature adjusted to the presence of a cosmological constant. As we will show such a formulation allows to replace the length variables by 3d or 4d dihedral angl... |
2006.08934 | Martin Reiris | Mart\'in Reiris, Ignacio Bustamante | On the existence of Killing fields in smooth spacetimes with a compact
Cauchy horizon | 15 pages | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that the surface gravity of a compact non-degenerate Cauchy horizon
in a smooth vacuum spacetime, can be normalized to a non-zero constant. This
result, combined with a recent result by Oliver Petersen and Istv\'an R\'acz,
end up proving the Isenberg-Moncrief conjecture on the existence of Killing
fields, in... | [
{
"created": "Tue, 16 Jun 2020 05:31:45 GMT",
"version": "v1"
}
] | 2020-06-17 | [
[
"Reiris",
"Martín",
""
],
[
"Bustamante",
"Ignacio",
""
]
] | We prove that the surface gravity of a compact non-degenerate Cauchy horizon in a smooth vacuum spacetime, can be normalized to a non-zero constant. This result, combined with a recent result by Oliver Petersen and Istv\'an R\'acz, end up proving the Isenberg-Moncrief conjecture on the existence of Killing fields, in t... |
gr-qc/0307054 | Juan Manuel Garcia-Islas | J.Manuel Garcia-Islas | (2+1)-dimensional quantum gravity, spin networks and asymptotics | null | Class.Quant.Grav. 21 (2004) 445-464 | 10.1088/0264-9381/21/2/009 | null | gr-qc | null | A method to evaluate spin networks for (2+1)-dimensional quantum gravity is
given. We analyse the evaluation of spin networks for Lorentzian, Euclidean and
a new limiting case of Newtonian quantum gravity. Particular attention is paid
to the tetrahedron and to the study of its asymptotics. Moreover, we propose
that a... | [
{
"created": "Thu, 10 Jul 2003 17:27:00 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Garcia-Islas",
"J. Manuel",
""
]
] | A method to evaluate spin networks for (2+1)-dimensional quantum gravity is given. We analyse the evaluation of spin networks for Lorentzian, Euclidean and a new limiting case of Newtonian quantum gravity. Particular attention is paid to the tetrahedron and to the study of its asymptotics. Moreover, we propose that all... |
1212.5500 | Claes Uggla | J. Mark Heinzle and Claes Uggla | Spike statistics | 14 pages, no figures | Gen. Rel. Grav. 45 (2013) 939 | 10.1007/s10714-013-1523-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we explore stochastical and statistical properties of so-called
recurring spike induced Kasner sequences. Such sequences arise in recurring
spike formation, which is needed together with the more familiar BKL scenario
to yield a complete description of generic spacelike singularities. In
particular we d... | [
{
"created": "Fri, 21 Dec 2012 15:55:35 GMT",
"version": "v1"
}
] | 2013-08-28 | [
[
"Heinzle",
"J. Mark",
""
],
[
"Uggla",
"Claes",
""
]
] | In this paper we explore stochastical and statistical properties of so-called recurring spike induced Kasner sequences. Such sequences arise in recurring spike formation, which is needed together with the more familiar BKL scenario to yield a complete description of generic spacelike singularities. In particular we der... |
1710.06179 | Norbert Van den Bergh | Norbert Van den Bergh | Rotating and twisting locally rotationally symmetric imperfect fluids | 6 pages, corrected several typos, added comments | Phys. Rev. D 96, 104056 (2017) | 10.1103/PhysRevD.96.104056 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Rotating and twisting locally rotationally symmetric imperfect fluids in
general relativity admit a much larger set of solutions than the self-similar
ones recently suggested in the literature. Explicit forms of the metrics are
given and the self-similar sub-cases are discussed.
| [
{
"created": "Tue, 17 Oct 2017 09:20:29 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Nov 2017 17:53:49 GMT",
"version": "v2"
}
] | 2017-12-06 | [
[
"Bergh",
"Norbert Van den",
""
]
] | Rotating and twisting locally rotationally symmetric imperfect fluids in general relativity admit a much larger set of solutions than the self-similar ones recently suggested in the literature. Explicit forms of the metrics are given and the self-similar sub-cases are discussed. |
gr-qc/0408035 | Simonetta Frittelli | Simonetta Frittelli (Duquesne University) | Well-posed first-order reduction of the characteristic problem of the
linearized Einstein equations | 6 pages | Phys.Rev. D71 (2005) 024021 | 10.1103/PhysRevD.71.024021 | null | gr-qc | null | A choice of first-order variables for the characteristic problem of the
linearized Einstein equations is found which casts the system into manifestly
well-posed form. The concept of well-posedness for characteristic problems
invoked is that there exists an \textit{a priori} estimate of the solution of
the characteris... | [
{
"created": "Thu, 12 Aug 2004 14:32:33 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Frittelli",
"Simonetta",
"",
"Duquesne University"
]
] | A choice of first-order variables for the characteristic problem of the linearized Einstein equations is found which casts the system into manifestly well-posed form. The concept of well-posedness for characteristic problems invoked is that there exists an \textit{a priori} estimate of the solution of the characteristi... |
0710.1640 | Mauricio Bellini | Mariano Anabitarte (Mar del Plata University & CONICET), Mauricio
Bellini (Mar del Plata University & CONICET) | Non-perturbative scalar gauge-invariant metric fluctuations from the
Ponce de Leon metric in the STM theory of gravity | accepted in Eur. Phys. J. C | Eur.Phys.J.C54:665-669,2008 | 10.1140/epjc/s10052-008-0552-3 | null | gr-qc | null | We study our non-perturbative formalism to describe scalar gauge-invariant
metric fluctuations by extending the Ponce de Leon metric.
| [
{
"created": "Mon, 8 Oct 2007 20:47:33 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Jan 2008 18:55:02 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Feb 2008 20:22:22 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Anabitarte",
"Mariano",
"",
"Mar del Plata University & CONICET"
],
[
"Bellini",
"Mauricio",
"",
"Mar del Plata University & CONICET"
]
] | We study our non-perturbative formalism to describe scalar gauge-invariant metric fluctuations by extending the Ponce de Leon metric. |
2106.15100 | Vincent Vennin | Jerome Martin, Vincent Vennin | Real-space entanglement in the Cosmic Microwave Background | companion of arXiv:2106.14575, 37 pages without appendices (total 46
pages), 7 figures, typos corrected in equations (A.8), (A.10), (A.13), (A.15) | null | 10.1088/1475-7516/2021/10/036 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the entanglement entropy, mutual information and quantum discord
of the Cosmic Microwave Background (CMB) fluctuations in real space. To that
end, we first show that measurements of these fluctuations at two distinct
spatial locations can be described by a bipartite, continuous Gaussian system.
This leads ... | [
{
"created": "Tue, 29 Jun 2021 05:31:56 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Oct 2021 05:45:49 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Jun 2023 05:21:27 GMT",
"version": "v3"
}
] | 2023-06-30 | [
[
"Martin",
"Jerome",
""
],
[
"Vennin",
"Vincent",
""
]
] | We compute the entanglement entropy, mutual information and quantum discord of the Cosmic Microwave Background (CMB) fluctuations in real space. To that end, we first show that measurements of these fluctuations at two distinct spatial locations can be described by a bipartite, continuous Gaussian system. This leads to... |
2202.09681 | Peter K.F. Kuhfittig | Peter K.F. Kuhfittig | A note on wormholes as compact stellar objects | 6 pages, no figures | Fundamental J. Mod. Phys., vol. 17, pp. 63-70, 2022 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Morris-Thorne wormhole can only be sustained by violating the null energy
condition, thereby requiring the existence of "exotic matter," a requirement
that many researchers consider unphysical. Using a mostly qualitative approach,
it is proposed in this note that the basic problems can be overcome by purely
relativ... | [
{
"created": "Sat, 19 Feb 2022 21:14:25 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Mar 2022 16:50:04 GMT",
"version": "v2"
},
{
"created": "Sat, 2 Apr 2022 18:59:33 GMT",
"version": "v3"
},
{
"created": "Wed, 6 Sep 2023 14:33:20 GMT",
"version": "v4"
},
{
"crea... | 2024-04-09 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | A Morris-Thorne wormhole can only be sustained by violating the null energy condition, thereby requiring the existence of "exotic matter," a requirement that many researchers consider unphysical. Using a mostly qualitative approach, it is proposed in this note that the basic problems can be overcome by purely relativis... |
1912.09199 | Antoine Leh\'ebel | William T. Emond, Antoine Leh\'ebel and Paul M. Saffin | Black holes in self-tuning cubic Horndeski cosmology | 12 pages, 3 figures; published version | Phys. Rev. D 101, 084008 (2020) | 10.1103/PhysRevD.101.084008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Observations of neutron star mergers in the late Universe have given
significant restrictions to the class of viable scalar-tensor theories. In this
paper we construct black holes within the "self-tuning" class of this
restricted set, whereby the bare cosmological constant is absorbed by the
dynamics of the scalar, g... | [
{
"created": "Thu, 19 Dec 2019 13:58:11 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Mar 2020 11:43:56 GMT",
"version": "v2"
}
] | 2020-04-07 | [
[
"Emond",
"William T.",
""
],
[
"Lehébel",
"Antoine",
""
],
[
"Saffin",
"Paul M.",
""
]
] | Observations of neutron star mergers in the late Universe have given significant restrictions to the class of viable scalar-tensor theories. In this paper we construct black holes within the "self-tuning" class of this restricted set, whereby the bare cosmological constant is absorbed by the dynamics of the scalar, giv... |
0809.1935 | Sanjeev Dhurandhar | S. V. Dhurandhar, K. R. Nayak and J-Y. Vinet | Optimising LISA orbits: The projectile solution | 10 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | LISA is a joint space mission of the NASA and the ESA for detecting low
frequency gravitational waves (GW) in the band $10^{-5} - 0.1$ Hz. The proposed
mission will use coherent laser beams which will be exchanged between three
identical spacecraft forming a giant (almost) equilateral triangle of side $5
\times 10^6$... | [
{
"created": "Thu, 11 Sep 2008 08:57:18 GMT",
"version": "v1"
}
] | 2008-09-12 | [
[
"Dhurandhar",
"S. V.",
""
],
[
"Nayak",
"K. R.",
""
],
[
"Vinet",
"J-Y.",
""
]
] | LISA is a joint space mission of the NASA and the ESA for detecting low frequency gravitational waves (GW) in the band $10^{-5} - 0.1$ Hz. The proposed mission will use coherent laser beams which will be exchanged between three identical spacecraft forming a giant (almost) equilateral triangle of side $5 \times 10^6$ k... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.