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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1905.09711 | Soumya Chakrabarti | Soumya Chakrabarti, Jackson Levi Said and Kazuharu Bamba | On Reconstruction of Extended Teleparallel Gravity from the Cosmological
Jerk Parameter | 17 pages, 16 figures, to appear in Eur. Phys. J. C | Eur. Phys. J. C (2019) 79:454 | 10.1140/epjc/s10052-019-6975-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Teleparallel gravity offers a path to resolve a number of longstanding issues
in general relativity by re-interpreting gravitation as an artifact of torsion
rather than curvature. The present work deals with cosmological solutions in an
extension of teleparallel gravity. A reconstruction scheme of the theory has
been... | [
{
"created": "Thu, 23 May 2019 15:16:16 GMT",
"version": "v1"
}
] | 2019-06-04 | [
[
"Chakrabarti",
"Soumya",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Bamba",
"Kazuharu",
""
]
] | Teleparallel gravity offers a path to resolve a number of longstanding issues in general relativity by re-interpreting gravitation as an artifact of torsion rather than curvature. The present work deals with cosmological solutions in an extension of teleparallel gravity. A reconstruction scheme of the theory has been p... |
gr-qc/0211009 | Yuyiu Lam | Yuyiu Lam | Totally Asymmetric Torsion on Riemann-Cartan Manifold | 10 pages | null | null | null | gr-qc | null | A relativistic theory constructed on Riemann-Cartan manifold with a derived
totally antisymmetric torsion is proposed. It follows the coincidence of the
autoparallel curve and metric geodesic. The totally antisymmetric torsion
naturally appears in the theory without any ad hoc imposed on.
| [
{
"created": "Sat, 2 Nov 2002 16:29:42 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Lam",
"Yuyiu",
""
]
] | A relativistic theory constructed on Riemann-Cartan manifold with a derived totally antisymmetric torsion is proposed. It follows the coincidence of the autoparallel curve and metric geodesic. The totally antisymmetric torsion naturally appears in the theory without any ad hoc imposed on. |
2302.04682 | Elham Nazari | Ozgur Akarsu, Elham Nazari, Mahmood Roshan | Relativistic binary systems in scale-independent energy-momentum squared
gravity | 20 pages. V2: changes and references have been added. Accepted for
publication in MNRAS | null | 10.1093/mnras/stad1747 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the gravitational-wave (GW) radiation and radiative
behavior of relativistic binary systems in the scale-independent
energy-momentum squared gravity (EMSG). Using the post-Minkowskian gravity
based on the Landau-Lifshitz formulation of the theory, the field equations of
the scale-independent E... | [
{
"created": "Thu, 9 Feb 2023 14:56:49 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Jun 2023 17:03:48 GMT",
"version": "v2"
}
] | 2023-06-28 | [
[
"Akarsu",
"Ozgur",
""
],
[
"Nazari",
"Elham",
""
],
[
"Roshan",
"Mahmood",
""
]
] | In this paper, we study the gravitational-wave (GW) radiation and radiative behavior of relativistic binary systems in the scale-independent energy-momentum squared gravity (EMSG). Using the post-Minkowskian gravity based on the Landau-Lifshitz formulation of the theory, the field equations of the scale-independent EMS... |
2308.10412 | Zainab Malik | Zainab Malik | Quasinormal modes of the bumblebee black holes with a global monopole | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We engage in the computation of quasinormal modes associated with scalar and
Dirac fields around spherically symmetric black holes with a global monopole in
bumblebee gravity. The frequency of oscillation and the damping rate exhibit
significant decreasing as the global monopole parameter is increased. An
intriguing ... | [
{
"created": "Mon, 21 Aug 2023 01:38:06 GMT",
"version": "v1"
}
] | 2023-08-22 | [
[
"Malik",
"Zainab",
""
]
] | We engage in the computation of quasinormal modes associated with scalar and Dirac fields around spherically symmetric black holes with a global monopole in bumblebee gravity. The frequency of oscillation and the damping rate exhibit significant decreasing as the global monopole parameter is increased. An intriguing ob... |
2108.07912 | Matheus Nilton | M.Nilton, G. Alencar | Schwarzschild-like Wormholes in Asymptotically Safe Gravity | Revised with minor changes and new references.16 pages, 4 figures | null | 10.3390/universe7090332 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we analyze the Schwarzschild-like wormhole in the
Asymptotically Safe Gravity(ASG) scenario. The ASG corrections are implemented
via renormalization group methods, which, as consequence, provides a new tensor
$X_{\mu\nu}$ as a source to improved field equations, and promotes the Newton's
constant into ... | [
{
"created": "Wed, 18 Aug 2021 00:10:41 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Sep 2021 16:59:30 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Oct 2021 13:26:45 GMT",
"version": "v3"
}
] | 2021-10-12 | [
[
"Nilton",
"M.",
""
],
[
"Alencar",
"G.",
""
]
] | In this paper, we analyze the Schwarzschild-like wormhole in the Asymptotically Safe Gravity(ASG) scenario. The ASG corrections are implemented via renormalization group methods, which, as consequence, provides a new tensor $X_{\mu\nu}$ as a source to improved field equations, and promotes the Newton's constant into a ... |
gr-qc/0612096 | Alessandro Nagar | Alessandro Nagar, Thibault Damour, Angelo Tartaglia | Binary black hole merger in the extreme mass ratio limit | 14 pages, six figures. Revised version. To appear in the CQG special
issue based around New Frontiers in Numerical Relativity conference, Golm
(Germany), July 17-21 2006 | Class.Quant.Grav.24:S109-S124,2007 | 10.1088/0264-9381/24/12/S08 | null | gr-qc | null | We discuss the transition from quasi-circular inspiral to plunge of a system
of two nonrotating black holes of masses $m_1$ and $m_2$ in the extreme mass
ratio limit $m_1m_2\ll (m_1+m_2)^2$. In the spirit of the Effective One Body
(EOB) approach to the general relativistic dynamics of binary systems, the
dynamics of ... | [
{
"created": "Fri, 15 Dec 2006 16:30:42 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Feb 2007 10:49:22 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Nagar",
"Alessandro",
""
],
[
"Damour",
"Thibault",
""
],
[
"Tartaglia",
"Angelo",
""
]
] | We discuss the transition from quasi-circular inspiral to plunge of a system of two nonrotating black holes of masses $m_1$ and $m_2$ in the extreme mass ratio limit $m_1m_2\ll (m_1+m_2)^2$. In the spirit of the Effective One Body (EOB) approach to the general relativistic dynamics of binary systems, the dynamics of th... |
gr-qc/9708068 | Marco Bruni | Sebastiano Sonego and Marco Bruni | Gauge dependence in the theory of non-linear spacetime perturbations | paper accepted for publication in Communications of Mathematical
Physics; SISSA preprint 105/97/A. 10 pages and 2 figures, standard latex | Commun.Math.Phys. 193 (1998) 209-218 | 10.1007/s002200050325 | null | gr-qc astro-ph dg-ga math.DG | null | Diffeomorphism freedom induces a gauge dependence in the theory of spacetime
perturbations. We derive a compact formula for gauge transformations of
perturbations of arbitrary order. To this end, we develop the theory of Taylor
expansions for one-parameter families (not necessarily groups) of
diffeomorphisms. First, ... | [
{
"created": "Thu, 28 Aug 1997 13:08:31 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Sonego",
"Sebastiano",
""
],
[
"Bruni",
"Marco",
""
]
] | Diffeomorphism freedom induces a gauge dependence in the theory of spacetime perturbations. We derive a compact formula for gauge transformations of perturbations of arbitrary order. To this end, we develop the theory of Taylor expansions for one-parameter families (not necessarily groups) of diffeomorphisms. First, we... |
2009.03265 | Anil Yadav dr | Monimala Mondal, Anil Kumar Yadav, Parthapratim Pradhan, Sayeedul
Islam and Farook Rahaman | Null Geodesics and QNMs in the field of Regular Black Holes | 24 pages, 18 figure panels, Accepted in Int. J. Mod. Phys. D | null | 10.1142/S0218271821500954 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the null geodesics of regular black holes. A detailed analysis of
geodesic structure both null geodesics and time-like geodesics have been
investigated for the said black hole. As an application of null geodecics, we
calculate the radius of photon sphere and gravitational bending of light. We
also study th... | [
{
"created": "Thu, 3 Sep 2020 11:28:39 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Jul 2021 05:16:18 GMT",
"version": "v2"
}
] | 2021-10-27 | [
[
"Mondal",
"Monimala",
""
],
[
"Yadav",
"Anil Kumar",
""
],
[
"Pradhan",
"Parthapratim",
""
],
[
"Islam",
"Sayeedul",
""
],
[
"Rahaman",
"Farook",
""
]
] | We analyze the null geodesics of regular black holes. A detailed analysis of geodesic structure both null geodesics and time-like geodesics have been investigated for the said black hole. As an application of null geodecics, we calculate the radius of photon sphere and gravitational bending of light. We also study the ... |
2210.13697 | Marie Cassing | Marie Cassing, Alexander Brisebois, Muhammad Azeem, J\"urgen
Schaffner-Bielich | Exotic Compact Objects with Two Dark Matter Fluids | 11 pages, 13 figures, discussions extended | null | 10.3847/1538-4357/acb3be | null | gr-qc astro-ph.HE hep-ph nucl-th | http://creativecommons.org/licenses/by/4.0/ | The generic properties of compact objects made of two different fluids of
dark matter are studied in a scale invariant approach. We investigate compact
objects with a core-shell structure, where the two fluids are separated, and
with mixed dark matter components, where both dark matter fluids are immersed
within each... | [
{
"created": "Mon, 24 Oct 2022 16:07:02 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jan 2023 13:47:10 GMT",
"version": "v2"
}
] | 2023-03-01 | [
[
"Cassing",
"Marie",
""
],
[
"Brisebois",
"Alexander",
""
],
[
"Azeem",
"Muhammad",
""
],
[
"Schaffner-Bielich",
"Jürgen",
""
]
] | The generic properties of compact objects made of two different fluids of dark matter are studied in a scale invariant approach. We investigate compact objects with a core-shell structure, where the two fluids are separated, and with mixed dark matter components, where both dark matter fluids are immersed within each o... |
1510.08025 | Otis Chodosh | Otis Chodosh, Yakov Shlapentokh-Rothman | Time-Periodic Einstein--Klein--Gordon Bifurcations of Kerr | Final version, to appear in CMP | null | null | null | gr-qc math-ph math.AP math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct one-parameter families of solutions to the
Einstein--Klein--Gordon equations bifurcating off the Kerr solution such that
the underlying family of spacetimes are each an asymptotically flat,
stationary, axisymmetric, black hole spacetime, and such that the corresponding
scalar fields are non-zero and time... | [
{
"created": "Tue, 27 Oct 2015 18:45:50 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Aug 2017 00:06:58 GMT",
"version": "v2"
}
] | 2017-08-08 | [
[
"Chodosh",
"Otis",
""
],
[
"Shlapentokh-Rothman",
"Yakov",
""
]
] | We construct one-parameter families of solutions to the Einstein--Klein--Gordon equations bifurcating off the Kerr solution such that the underlying family of spacetimes are each an asymptotically flat, stationary, axisymmetric, black hole spacetime, and such that the corresponding scalar fields are non-zero and time-p... |
2006.01619 | Saibal Ray | Suparna Biswas, Dibyendu Shee, B.K. Guha and Saibal Ray | Anisotropic strange star with Tolman-Kuchowicz metric under $f(R,T)$
gravity | 14 pages, 11 figures | Eur. Phys. J. C (2020) 80:175 | 10.1140/epjc/s10052-020-7725-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the current article, we study anisotropic spherically symmetric strange
star under the background of $f(R,T)$ gravity using the metric potentials of
Tolman-Kuchowicz type~\cite{Tolman1939,Kuchowicz1968} as
$\lambda(r)=\ln(1+ar^2+br^4)$ and $\nu(r)=Br^2+2\ln C$ which are free from
singularity, satisfy stability cri... | [
{
"created": "Sat, 30 May 2020 08:39:13 GMT",
"version": "v1"
}
] | 2020-06-03 | [
[
"Biswas",
"Suparna",
""
],
[
"Shee",
"Dibyendu",
""
],
[
"Guha",
"B. K.",
""
],
[
"Ray",
"Saibal",
""
]
] | In the current article, we study anisotropic spherically symmetric strange star under the background of $f(R,T)$ gravity using the metric potentials of Tolman-Kuchowicz type~\cite{Tolman1939,Kuchowicz1968} as $\lambda(r)=\ln(1+ar^2+br^4)$ and $\nu(r)=Br^2+2\ln C$ which are free from singularity, satisfy stability crite... |
1604.00405 | Aymen Hamid Mr | Giovanni Acquaviva, George F. R. Ellis, Rituparno Goswami and Aymen I.
M. Hamid | Constructing black hole entropy from gravitational collapse | 6 pages, 1 figure, Conference proceeding for MG14, submitted to MG14
2015, based on arXiv:1411.5708 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on a recent proposal for the gravitational entropy of free
gravitational fields, we investigate the thermodynamic properties of black hole
formation through gravitational collapse in the framework of the semitetrad
1+1+2 covariant formalism. In the simplest case of an Oppenheimer-Snyder-Datt
collapse we prove t... | [
{
"created": "Fri, 1 Apr 2016 20:46:46 GMT",
"version": "v1"
}
] | 2016-04-05 | [
[
"Acquaviva",
"Giovanni",
""
],
[
"Ellis",
"George F. R.",
""
],
[
"Goswami",
"Rituparno",
""
],
[
"Hamid",
"Aymen I. M.",
""
]
] | Based on a recent proposal for the gravitational entropy of free gravitational fields, we investigate the thermodynamic properties of black hole formation through gravitational collapse in the framework of the semitetrad 1+1+2 covariant formalism. In the simplest case of an Oppenheimer-Snyder-Datt collapse we prove tha... |
0908.1265 | David Reeb | Stephen D. H. Hsu, David Reeb | Monsters, black holes and the statistical mechanics of gravity | 9 pages, 4 figures, revtex; invited Brief Review to be published in
Modern Physics Letters A | Mod.Phys.Lett.A24:1875-1887,2009 | 10.1142/S0217732309031624 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the construction of monsters in classical general relativity.
Monsters have finite ADM mass and surface area, but potentially unbounded
entropy. From the curved space perspective they are objects with large proper
volume that can be glued on to an asymptotically flat space. At no point is the
curvature or e... | [
{
"created": "Mon, 10 Aug 2009 02:39:37 GMT",
"version": "v1"
}
] | 2010-04-30 | [
[
"Hsu",
"Stephen D. H.",
""
],
[
"Reeb",
"David",
""
]
] | We review the construction of monsters in classical general relativity. Monsters have finite ADM mass and surface area, but potentially unbounded entropy. From the curved space perspective they are objects with large proper volume that can be glued on to an asymptotically flat space. At no point is the curvature or ene... |
2407.21329 | Chongoh Lee | Chong Oh Lee | Thermodynamic relation of accelerating black holes in anti-de Sitter
spacetime | 5 pages, 2 figures, 1 table, added references | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider accelerating black holes in four-dimensional anti-de Sitter
spacetime and investigate the extremality relations by examining perturbative
corrections to both the entropy of black holes and their extremality bounds. It
is shown that the so-called Goon and Penco (univeral) relation is also valid
for acceler... | [
{
"created": "Wed, 31 Jul 2024 04:34:18 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Aug 2024 14:26:26 GMT",
"version": "v2"
}
] | 2024-08-14 | [
[
"Lee",
"Chong Oh",
""
]
] | We consider accelerating black holes in four-dimensional anti-de Sitter spacetime and investigate the extremality relations by examining perturbative corrections to both the entropy of black holes and their extremality bounds. It is shown that the so-called Goon and Penco (univeral) relation is also valid for accelerat... |
2207.02021 | Sunil Maurya DR. | S. K. Maurya, G. Mustafa, M. Govender, and Ksh. Newton Singh | Exploring physical properties of minimally deformed strange star model
and constraints on maximum mass limit in $f(\mathcal{Q})$ gravity | 11 Figures and 3 Tables | null | 10.1088/1475-7516/2022/10/003 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work we take our cue from the observations of gravitational waves of
the GW190814 event which suggests that source of the signals can be ascribed to
a compact binary coalescence of a 22.2 to 24.3$ M_{\odot}$ black hole and a
compact object endowed with a mass of 2.50 to 2.67$M_{\odot}$. In the current
exposit... | [
{
"created": "Sat, 2 Jul 2022 08:19:18 GMT",
"version": "v1"
}
] | 2022-10-12 | [
[
"Maurya",
"S. K.",
""
],
[
"Mustafa",
"G.",
""
],
[
"Govender",
"M.",
""
],
[
"Singh",
"Ksh. Newton",
""
]
] | In this work we take our cue from the observations of gravitational waves of the GW190814 event which suggests that source of the signals can be ascribed to a compact binary coalescence of a 22.2 to 24.3$ M_{\odot}$ black hole and a compact object endowed with a mass of 2.50 to 2.67$M_{\odot}$. In the current expositio... |
gr-qc/0412033 | P. Ajith | P. Ajith, Bala R. Iyer, C. A. K. Robinson and B. S. Sathyaprakash | New class of post-Newtonian approximants to the waveform templates of
inspiralling compact binaries: Test-mass in the Schwarzschild spacetime | Comparable-mass results have been corrected in view of related Errata
by Blanchet and Iyer (2005) | Phys.Rev.D71:044029,2005; Erratum-ibid.D72:049902,2005 | 10.1103/PhysRevD.71.044029 10.1103/PhysRevD.72.049902 | null | gr-qc | null | (Abridged): The standard adiabatic approximation to phasing of gravitational
waves from inspiralling compact binaries uses the post-Newtonian expansions of
the binding energy and gravitational wave flux both truncated at the same
relative post-Newtonian order. Motivated by the eventual need to go beyond the
adiabatic... | [
{
"created": "Wed, 8 Dec 2004 00:03:36 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Jan 2005 04:06:45 GMT",
"version": "v2"
},
{
"created": "Wed, 13 Jul 2005 13:30:56 GMT",
"version": "v3"
}
] | 2014-11-17 | [
[
"Ajith",
"P.",
""
],
[
"Iyer",
"Bala R.",
""
],
[
"Robinson",
"C. A. K.",
""
],
[
"Sathyaprakash",
"B. S.",
""
]
] | (Abridged): The standard adiabatic approximation to phasing of gravitational waves from inspiralling compact binaries uses the post-Newtonian expansions of the binding energy and gravitational wave flux both truncated at the same relative post-Newtonian order. Motivated by the eventual need to go beyond the adiabatic a... |
2408.06712 | Peter Hintz | Peter Hintz | Gluing small black holes along timelike geodesics II: uniform analysis
on glued spacetimes | 141 pages, 13 figures | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given a smooth globally hyperbolic $(3+1)$-dimensional spacetime $(M,g)$
satisfying the Einstein vacuum equations (possibly with cosmological constant)
and an inextendible timelike geodesic $\mathcal{C}$, we constructed in Part I a
family of metrics $g_\epsilon$ on the complement $M_\epsilon\subset M$ of an
$\epsilon... | [
{
"created": "Tue, 13 Aug 2024 08:14:35 GMT",
"version": "v1"
}
] | 2024-08-14 | [
[
"Hintz",
"Peter",
""
]
] | Given a smooth globally hyperbolic $(3+1)$-dimensional spacetime $(M,g)$ satisfying the Einstein vacuum equations (possibly with cosmological constant) and an inextendible timelike geodesic $\mathcal{C}$, we constructed in Part I a family of metrics $g_\epsilon$ on the complement $M_\epsilon\subset M$ of an $\epsilon$-... |
2111.09530 | Alexey Toporensky | A. V. Toporensky and O. B. Zaslavskii | Regular frames for spherically symmetric black holes revisited | 19 pages, 1 jpg figure; figure added, typos corrected; published
version | Symmetry, 14, 40 (2022) | 10.3390/sym14010040 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a space-time of a spherically symmetric black hole with one
simple horizon. As a standard coordinate frame fails in its vicinity, this
requires continuation across the horizon and constructing frames which are
regular there. Up to now, several standard frames of such a kind are known. It
was shown in lite... | [
{
"created": "Thu, 18 Nov 2021 05:41:34 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Jan 2022 22:04:37 GMT",
"version": "v2"
}
] | 2022-01-11 | [
[
"Toporensky",
"A. V.",
""
],
[
"Zaslavskii",
"O. B.",
""
]
] | We consider a space-time of a spherically symmetric black hole with one simple horizon. As a standard coordinate frame fails in its vicinity, this requires continuation across the horizon and constructing frames which are regular there. Up to now, several standard frames of such a kind are known. It was shown in litera... |
1811.08731 | Saulo Carneiro | Saulo Carneiro | Elementary charge and neutrino's mass from Planck length | 4 pages, no figures. Final version, matching that published in
Foundations of Physics | Found. Phys. 50, 1376 (2020) | 10.1007/s10701-020-00383-z | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the postulation of a minimum length for the horizons of a
black hole leads to lower bounds for the electric charges and magnetic moments
of elementary particles. If the minimum length has the order of the Planck
scale, these bounds are given, respectively, by the electronic charge and by
$\mu \sim 10... | [
{
"created": "Wed, 21 Nov 2018 13:47:52 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Jan 2019 17:23:57 GMT",
"version": "v2"
},
{
"created": "Fri, 31 May 2019 16:57:52 GMT",
"version": "v3"
},
{
"created": "Sun, 29 Nov 2020 14:35:23 GMT",
"version": "v4"
}
] | 2020-12-01 | [
[
"Carneiro",
"Saulo",
""
]
] | It is shown that the postulation of a minimum length for the horizons of a black hole leads to lower bounds for the electric charges and magnetic moments of elementary particles. If the minimum length has the order of the Planck scale, these bounds are given, respectively, by the electronic charge and by $\mu \sim 10^{... |
1502.05819 | Eduardo Rodrigues | H. P. de Oliveira and E. L. Rodrigues | Three dimensional distorted black holes: using the Galerkin-Collocation
method | 11 pages, 9 figures | Phys. Rev. D 90, 124027 (2014) | 10.1103/PhysRevD.90.124027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an implementation of the Galerkin-Collocation method to determine
the initial data for non-rotating distorted three dimensional black holes in
the inversion and puncture schemes. The numerical method combines the key
features of the Galerkin and Collocation methods which produces accurate
initial data. We ... | [
{
"created": "Fri, 20 Feb 2015 10:17:27 GMT",
"version": "v1"
}
] | 2015-02-23 | [
[
"de Oliveira",
"H. P.",
""
],
[
"Rodrigues",
"E. L.",
""
]
] | We present an implementation of the Galerkin-Collocation method to determine the initial data for non-rotating distorted three dimensional black holes in the inversion and puncture schemes. The numerical method combines the key features of the Galerkin and Collocation methods which produces accurate initial data. We ev... |
2203.00566 | Gianmassimo Tasinato | Tessa Baker, Gianluca Calcagni, Anson Chen, Matteo Fasiello, Lucas
Lombriser, Katarina Martinovic, Mauro Pieroni, Mairi Sakellariadou,
Gianmassimo Tasinato, Daniele Bertacca, Ippocratis D. Saltas | Measuring the propagation speed of gravitational waves with LISA | 38+20 pages, 22 figures. V2: Analysis improved, to be published in
JCAP | null | 10.1088/1475-7516/2022/08/031 | LISA CosWG-22-02 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The propagation speed of gravitational waves, $c_T$, has been tightly
constrained by the binary neutron star merger GW170817 and its electromagnetic
counterpart, under the assumption of a frequency-independent $c_T$. Drawing
upon arguments from Effective Field Theory and quantum gravity, we discuss the
possibility th... | [
{
"created": "Tue, 1 Mar 2022 15:42:54 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Mar 2022 10:35:47 GMT",
"version": "v2"
},
{
"created": "Wed, 13 Jul 2022 07:03:58 GMT",
"version": "v3"
}
] | 2022-08-24 | [
[
"Baker",
"Tessa",
""
],
[
"Calcagni",
"Gianluca",
""
],
[
"Chen",
"Anson",
""
],
[
"Fasiello",
"Matteo",
""
],
[
"Lombriser",
"Lucas",
""
],
[
"Martinovic",
"Katarina",
""
],
[
"Pieroni",
"Mauro",
""
],
... | The propagation speed of gravitational waves, $c_T$, has been tightly constrained by the binary neutron star merger GW170817 and its electromagnetic counterpart, under the assumption of a frequency-independent $c_T$. Drawing upon arguments from Effective Field Theory and quantum gravity, we discuss the possibility that... |
gr-qc/0703007 | Henrique de Oliveira | H. P. de Oliveira, E. L. Rodrigues, I. Dami\~ao Soares, E. V. Tonini | The low dimensional dynamical system approach in General Relativity: an
example | 7 pages, 5 figures | null | 10.1142/S0129183107011881 | null | gr-qc | null | In this paper we explore one of the most important features of the Galerkin
method, which is to achieve high accuracy with a relatively modest
computational effort, in the dynamics of Robinson-Trautman spacetimes.
| [
{
"created": "Thu, 1 Mar 2007 14:02:06 GMT",
"version": "v1"
}
] | 2016-12-21 | [
[
"de Oliveira",
"H. P.",
""
],
[
"Rodrigues",
"E. L.",
""
],
[
"Soares",
"I. Damião",
""
],
[
"Tonini",
"E. V.",
""
]
] | In this paper we explore one of the most important features of the Galerkin method, which is to achieve high accuracy with a relatively modest computational effort, in the dynamics of Robinson-Trautman spacetimes. |
gr-qc/0412011 | Suresh Maran k | Suresh K Maran | Relating Spin Foams and Canonical Quantum Gravity: (n-1)+1 formulation
of nD spin foams | 31 pages. 11 figures. Final report of the research | Phys.Rev.D70:124004,2004 | 10.1103/PhysRevD.70.124004 | null | gr-qc | null | In this article we lay foundations for a formal relationship of spin foam
models of gravity and BF theory to their continuum canonical formulations.
First the derivation of the spin foam model of the BF theory from the discrete
BF theory action in n dimensions is reviewed briefly. By foliating the
underlying n dimens... | [
{
"created": "Thu, 2 Dec 2004 22:29:26 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Maran",
"Suresh K",
""
]
] | In this article we lay foundations for a formal relationship of spin foam models of gravity and BF theory to their continuum canonical formulations. First the derivation of the spin foam model of the BF theory from the discrete BF theory action in n dimensions is reviewed briefly. By foliating the underlying n dimensio... |
1804.02039 | Adam Chudecki Dr | Adam Chudecki | Classification of complex and real, vacuum spaces of the type
$[\textrm{N}] \otimes [\textrm{N}]$ | null | Journal of Mathematical Physics 59, 062503 (2018) | 10.1063/1.5034348 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Complex and real, vacuum spaces with both self-dual and anti-self-dual parts
of the Weyl tensor being of the type [N] are considered. Such spaces are
classified according to two criteria. The first one takes into account the
properties of the congruences of totally null, geodesic 2-dimensional surfaces
(the null stri... | [
{
"created": "Thu, 5 Apr 2018 19:48:57 GMT",
"version": "v1"
}
] | 2018-06-28 | [
[
"Chudecki",
"Adam",
""
]
] | Complex and real, vacuum spaces with both self-dual and anti-self-dual parts of the Weyl tensor being of the type [N] are considered. Such spaces are classified according to two criteria. The first one takes into account the properties of the congruences of totally null, geodesic 2-dimensional surfaces (the null string... |
2010.15767 | Valery Nikulin V | Valery Nikulin | Cosmological accumulation of conserved numbers in Kaluza-Klein theories | 9 pages, 3 figures | null | null | To appear in Proceedings of the 23rd Bled Workshop "What Comes
Beyond Standard Models" | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a new mechanism for the accumulation of conserved numbers in the
early Universe in Kaluza-Klein-like theories. The relaxation of the primordial
extra space perturbations existing in the early Universe leads to the
establishment of a symmetric final state and the appearance of Killing vectors.
As a result, ... | [
{
"created": "Thu, 29 Oct 2020 17:12:39 GMT",
"version": "v1"
}
] | 2020-11-03 | [
[
"Nikulin",
"Valery",
""
]
] | We develop a new mechanism for the accumulation of conserved numbers in the early Universe in Kaluza-Klein-like theories. The relaxation of the primordial extra space perturbations existing in the early Universe leads to the establishment of a symmetric final state and the appearance of Killing vectors. As a result, th... |
gr-qc/0302014 | Brian Edgar | S. Brian Edgar | On Effective Constraints for the Riemann-Lanczos System of Equations | 9pages, TeX | J.Math.Phys. 44 (2003) 5375-5385 | 10.1063/1.1619203 | null | gr-qc | null | There have been conflicting points of view concerning the Riemann--Lanczos
problem in 3 and 4 dimensions. Using direct differentiation on the defining
partial differential equations, Massa and Pagani (in 4 dimensions) and Edgar
(in dimensions n > 2) have argued that there are effective constraints so that
not all Rie... | [
{
"created": "Wed, 5 Feb 2003 11:13:40 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Edgar",
"S. Brian",
""
]
] | There have been conflicting points of view concerning the Riemann--Lanczos problem in 3 and 4 dimensions. Using direct differentiation on the defining partial differential equations, Massa and Pagani (in 4 dimensions) and Edgar (in dimensions n > 2) have argued that there are effective constraints so that not all Riema... |
2207.04390 | Zhi-Wei Wang | Zhi-Wei Wang and Samuel L. Braunstein | Surfaces away from horizons are not thermodynamic | 12 pages, 2 figures, Published in Nature Communications | null | 10.1038/s41467-018-05433-9 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Since the 1970's it has been known that black hole (and other) horizons are
truly thermodynamic in nature. More generally, surfaces which are not horizons
have also been conjectured to behave thermodynamically. Initially, for surfaces
microscopically expanded from a horizon to so-called stretched horizons, and
more r... | [
{
"created": "Sun, 10 Jul 2022 06:09:34 GMT",
"version": "v1"
}
] | 2022-07-12 | [
[
"Wang",
"Zhi-Wei",
""
],
[
"Braunstein",
"Samuel L.",
""
]
] | Since the 1970's it has been known that black hole (and other) horizons are truly thermodynamic in nature. More generally, surfaces which are not horizons have also been conjectured to behave thermodynamically. Initially, for surfaces microscopically expanded from a horizon to so-called stretched horizons, and more rec... |
0808.0828 | Robert T. Jantzen | Donato Bini, Christian Cherubini, Andrea Geralico, Robert T. Jantzen | Electrocardiogram of the Mixmaster Universe | version 3: 20 pages iopart style, 19 eps figure files for 8 latex
figures; added example of a transient true spike to contrast with the
permanent true spike example from the Lim family of true spike solutions;
remarks in introduction and conclusion adjusted and toned down; minor
adjustments to the remaining tex... | Class.Quant.Grav.26:025012,2009 | 10.1088/0264-9381/26/2/025012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Mixmaster dynamics is revisited in a new light as revealing a series of
transitions in the complex scale invariant scalar invariant of the Weyl
curvature tensor best represented by the speciality index $\mathcal{S}$, which
gives a 4-dimensional measure of the evolution of the spacetime independent of
all the 3-di... | [
{
"created": "Wed, 6 Aug 2008 13:14:53 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Sep 2008 19:32:30 GMT",
"version": "v2"
},
{
"created": "Thu, 4 Dec 2008 16:31:31 GMT",
"version": "v3"
}
] | 2009-01-08 | [
[
"Bini",
"Donato",
""
],
[
"Cherubini",
"Christian",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Jantzen",
"Robert T.",
""
]
] | The Mixmaster dynamics is revisited in a new light as revealing a series of transitions in the complex scale invariant scalar invariant of the Weyl curvature tensor best represented by the speciality index $\mathcal{S}$, which gives a 4-dimensional measure of the evolution of the spacetime independent of all the 3-dime... |
2404.15864 | Matteo Luca Ruggiero | Matteo Luca Ruggiero | Effects of gravitational waves on electromagnetic fields | 20 pages, 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We focus on the interaction of a plane gravitational wave with
electromagnetic fields and we describe this interaction in the proper detector
frame where, thanks to the introduction of Fermi coordinates, it is possible to
refer to directly measurable quantities. The presence of a gravitational field
can be addressed ... | [
{
"created": "Wed, 24 Apr 2024 13:28:29 GMT",
"version": "v1"
}
] | 2024-04-25 | [
[
"Ruggiero",
"Matteo Luca",
""
]
] | We focus on the interaction of a plane gravitational wave with electromagnetic fields and we describe this interaction in the proper detector frame where, thanks to the introduction of Fermi coordinates, it is possible to refer to directly measurable quantities. The presence of a gravitational field can be addressed in... |
1011.5797 | Orchidea Maria Lecian | Thibault Damour, Orchidea Maria Lecian | Statistical Properties of Cosmological Billiards | 51 pages, 9 figures, 9 tables; version 2: part of previous Section IV
moved to Appendix, minor restyling, some typos corrected, improved quality of
figures, published version | Phys.Rev.D83:044038,2011 | 10.1103/PhysRevD.83.044038 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Belinski, Khalatnikov and Lifshitz (BKL) pioneered the study of the
statistical properties of the never-ending oscillatory behavior (among
successive Kasner epochs) of the geometry near a space-like singularity. We
show how the use of a "cosmological billiard" description allows one to refine
and deepen the understan... | [
{
"created": "Fri, 26 Nov 2010 14:19:26 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Feb 2011 13:50:09 GMT",
"version": "v2"
}
] | 2011-03-23 | [
[
"Damour",
"Thibault",
""
],
[
"Lecian",
"Orchidea Maria",
""
]
] | Belinski, Khalatnikov and Lifshitz (BKL) pioneered the study of the statistical properties of the never-ending oscillatory behavior (among successive Kasner epochs) of the geometry near a space-like singularity. We show how the use of a "cosmological billiard" description allows one to refine and deepen the understandi... |
1406.1968 | Mohammad Nouri-Zonoz | M. Nouri-Zonoz and A. Parvizi | Papapetrou field as the gravitoelectromagnetic field tensor in
stationary spacetimes | 23 pages, no figures, revtex4, More references are added | Gen Relativ Gravit (2016) 48:37 | 10.1007/s10714-016-2032-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Introducing the well known Papapetrou field as the gravitoelectromagnetic
field tensor, we express the Maxwell-type part of the 3-dimensional
quasi-Maxwell form of the {\it vacuum} Einstein field equations in terms of
differential forms, analogous to their electromagnetic counterparts in curved
spacetimes. Using the ... | [
{
"created": "Sun, 8 Jun 2014 10:42:32 GMT",
"version": "v1"
},
{
"created": "Sat, 20 Sep 2014 10:59:41 GMT",
"version": "v2"
},
{
"created": "Thu, 18 Dec 2014 13:07:12 GMT",
"version": "v3"
},
{
"created": "Thu, 6 Aug 2015 09:14:29 GMT",
"version": "v4"
}
] | 2016-03-08 | [
[
"Nouri-Zonoz",
"M.",
""
],
[
"Parvizi",
"A.",
""
]
] | Introducing the well known Papapetrou field as the gravitoelectromagnetic field tensor, we express the Maxwell-type part of the 3-dimensional quasi-Maxwell form of the {\it vacuum} Einstein field equations in terms of differential forms, analogous to their electromagnetic counterparts in curved spacetimes. Using the sa... |
gr-qc/9503063 | null | CJ Isham and N Linden | Continuous Histories and the History Group in Generalised Quantum Theory | 25 pages | J.Math.Phys. 36 (1995) 5392-5408 | 10.1063/1.531267 | Imperial/TP/94--95/19, DAMTP 95--16 | gr-qc | null | We treat continuous histories within the histories approach to generalised
quantum mechanics. The essential tool is the `history group': the analogue,
within the generalised history scheme, of the canonical group of single-time
quantum mechanics.
| [
{
"created": "Fri, 31 Mar 1995 11:02:00 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Isham",
"CJ",
""
],
[
"Linden",
"N",
""
]
] | We treat continuous histories within the histories approach to generalised quantum mechanics. The essential tool is the `history group': the analogue, within the generalised history scheme, of the canonical group of single-time quantum mechanics. |
0907.4910 | Mohammad Reza Setare | M. R. Setare | Interacting new agegraphic Phantom model of dark energy in non-flat
universe | 8 pages, no figure | null | 10.1007/s10773-010-0254-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider the new agegraphic model of interacting dark energy
in non-flat universe. We show that the interacting agegraphic dark energy can
be described by a phantom scalar field. Then we show this phantomic description
of the agegraphic dark energy and reconstruct the potential of the phantom
scalar ... | [
{
"created": "Tue, 28 Jul 2009 13:08:42 GMT",
"version": "v1"
}
] | 2015-05-13 | [
[
"Setare",
"M. R.",
""
]
] | In this paper we consider the new agegraphic model of interacting dark energy in non-flat universe. We show that the interacting agegraphic dark energy can be described by a phantom scalar field. Then we show this phantomic description of the agegraphic dark energy and reconstruct the potential of the phantom scalar fi... |
1408.3626 | Davood Momeni Dr | D. Momeni, R. Myrzakulov | Tolman-Oppenheimer-Volkoff Equations in Modified Gauss-Bonnet Gravity | Version accepted in "International Journal of Geometric Methods in
Modern Physics" | Int. J. Geom. Methods Mod. Phys. 12, 1550014 (2015) | 10.1142/S0219887815500140 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on a stringy inspired Gauss-Bonnet (GB) modification of classical
gravity, we constructed a model for neutron stars. We derived the modified
forms of Tolman-Oppenheimer-Volkoff (TOV) equations for a generic function of
$f(G)$ gravity. The hydrostatic equations remained unchanged but the dynamical
equations for ... | [
{
"created": "Fri, 15 Aug 2014 11:30:46 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Oct 2014 02:53:44 GMT",
"version": "v2"
}
] | 2015-04-07 | [
[
"Momeni",
"D.",
""
],
[
"Myrzakulov",
"R.",
""
]
] | Based on a stringy inspired Gauss-Bonnet (GB) modification of classical gravity, we constructed a model for neutron stars. We derived the modified forms of Tolman-Oppenheimer-Volkoff (TOV) equations for a generic function of $f(G)$ gravity. The hydrostatic equations remained unchanged but the dynamical equations for me... |
1411.7001 | Mariafelicia De Laurentis Professor | Mariafelicia De Laurentis | Topological invariant quintessence | 8 pages | Mod. Phys. Lett. A 30 , 1550069 (2015) | 10.1142/S0217732315500698 | null | gr-qc astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The issues of quintessence and cosmic acceleration can be discussed in the
framework of $F(R, {\cal G})$ theories of gravity where $R$ is the Ricci
curvature scalar and ${\cal G}$ is the Gauss-Bonnet topological invariant. It
is possible to show that such an approach exhausts all the curvature content
related to the ... | [
{
"created": "Tue, 25 Nov 2014 20:13:47 GMT",
"version": "v1"
}
] | 2015-05-06 | [
[
"De Laurentis",
"Mariafelicia",
""
]
] | The issues of quintessence and cosmic acceleration can be discussed in the framework of $F(R, {\cal G})$ theories of gravity where $R$ is the Ricci curvature scalar and ${\cal G}$ is the Gauss-Bonnet topological invariant. It is possible to show that such an approach exhausts all the curvature content related to the Ri... |
gr-qc/0302120 | Panayotis Kevrekidis | T. Christodoulakis, C. Helias, P.G. Kevrekidis, I.G. Kevrekidis and
G.O. Papadopoulos | On 3+1 Dimensional Friedman-Robertson-Walker Universes with Matter | 5 pages, 2 figures | null | null | null | gr-qc | null | We examine the dynamical behavior of matter coupled to gravity in the context
of a linear Klein-Gordon equation coupled to a Friedman-Robertson-Walker
metric. The resulting ordinary differential equations can be decoupled, the
effect of gravity being traced in rendering the equation for the scalar field
nonlinear. We... | [
{
"created": "Fri, 28 Feb 2003 12:55:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Christodoulakis",
"T.",
""
],
[
"Helias",
"C.",
""
],
[
"Kevrekidis",
"P. G.",
""
],
[
"Kevrekidis",
"I. G.",
""
],
[
"Papadopoulos",
"G. O.",
""
]
] | We examine the dynamical behavior of matter coupled to gravity in the context of a linear Klein-Gordon equation coupled to a Friedman-Robertson-Walker metric. The resulting ordinary differential equations can be decoupled, the effect of gravity being traced in rendering the equation for the scalar field nonlinear. We o... |
0804.1904 | Antonio F. Ranada | Antonio F. Ranada and Alfredo Tiemblo | A proposal that explains the Pioneer anomaly | 18 pages, 1 figure; added 6 pages and 9 references, changed abstract | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose here an explanation of the Pioneer anomaly which is not in
conflict with the cartography of the solar system. In our model, the spaceship
does not suffer any extra acceleration but follows the trajectory predicted by
standard gravitational theory. The observed acceleration is not real but
apparent and has ... | [
{
"created": "Fri, 11 Apr 2008 14:05:57 GMT",
"version": "v1"
},
{
"created": "Fri, 30 May 2008 17:48:03 GMT",
"version": "v2"
},
{
"created": "Fri, 13 Jun 2008 11:27:24 GMT",
"version": "v3"
},
{
"created": "Thu, 5 Feb 2009 12:33:03 GMT",
"version": "v4"
},
{
"cr... | 2009-09-03 | [
[
"Ranada",
"Antonio F.",
""
],
[
"Tiemblo",
"Alfredo",
""
]
] | We propose here an explanation of the Pioneer anomaly which is not in conflict with the cartography of the solar system. In our model, the spaceship does not suffer any extra acceleration but follows the trajectory predicted by standard gravitational theory. The observed acceleration is not real but apparent and has th... |
1803.07111 | Tomohiro Nakama | Tomohiro Nakama and Jun'ichi Yokoyama | Reheating through the Higgs amplified by spinodal instabilities and
gravitational creation of gravitons | 9 pages, 3 figures | PTEP 2019 (2019) no.3, 033E02 | 10.1093/ptep/ptz014 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that a positive non-minimal coupling of the Higgs field to
gravity can solve the two problems in inflation models in which
postinflationary universe is dominated by an energy with stiff equation of
state such as a kination, namely, overproduction of gravitons in gravitational
reheating scenario, and overp... | [
{
"created": "Mon, 19 Mar 2018 18:39:26 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Dec 2018 05:18:05 GMT",
"version": "v2"
}
] | 2019-04-09 | [
[
"Nakama",
"Tomohiro",
""
],
[
"Yokoyama",
"Jun'ichi",
""
]
] | It is shown that a positive non-minimal coupling of the Higgs field to gravity can solve the two problems in inflation models in which postinflationary universe is dominated by an energy with stiff equation of state such as a kination, namely, overproduction of gravitons in gravitational reheating scenario, and overpro... |
1711.09034 | Sergio Ulhoa | A. F. Santos, S. C. Ulhoa and Faqir C. Khanna | On Fermion-Graviton Scattering at Finite Temperature | null | International Journal of Theoretical Physics. June 2017, Volume
56, Issue 6, pp 1995 | 10.1007/s10773-017-3343-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The early universe is dominated by phenomena at high temperatures. The
thermal effects decrease during evolution of the universe. However there are
some phenomena, such as processes inside stars and black holes, where the role
of the temperature is important. Study of processes involving gravitons at
finite temperatu... | [
{
"created": "Wed, 22 Nov 2017 01:51:47 GMT",
"version": "v1"
}
] | 2017-11-27 | [
[
"Santos",
"A. F.",
""
],
[
"Ulhoa",
"S. C.",
""
],
[
"Khanna",
"Faqir C.",
""
]
] | The early universe is dominated by phenomena at high temperatures. The thermal effects decrease during evolution of the universe. However there are some phenomena, such as processes inside stars and black holes, where the role of the temperature is important. Study of processes involving gravitons at finite temperature... |
2003.13673 | Nicholas Loutrel | Nicholas Loutrel | Fast Frequency-Domain Effective Fly-By Waveforms | 15 pages, 6 figures, journal version | 2021 Class. Quantum Grav. 38 015005 | 10.1088/1361-6382/abc3f6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, we developed effective fly-by (EFB) waveforms designed to model the
burst of gravitational radiation from highly eccentric binaries. We here
present a faster to evaluate frequency domain EFB waveform. The waveform is
constructed through the use of asymptotic expansions of hypergeometric
functions. Since the... | [
{
"created": "Mon, 30 Mar 2020 17:55:26 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Aug 2021 17:24:41 GMT",
"version": "v2"
}
] | 2021-08-17 | [
[
"Loutrel",
"Nicholas",
""
]
] | Recently, we developed effective fly-by (EFB) waveforms designed to model the burst of gravitational radiation from highly eccentric binaries. We here present a faster to evaluate frequency domain EFB waveform. The waveform is constructed through the use of asymptotic expansions of hypergeometric functions. Since the w... |
gr-qc/9806121 | Carlo Rovelli | Carlo Rovelli | The projector on physical states in loop quantum gravity | 15 pages, 2 figures, substantially revised version | Phys. Rev. D 59, 104015 (1999) | 10.1103/PhysRevD.59.104015 | CPT-98/P3707 | gr-qc hep-th | null | We construct the operator that projects on the physical states in loop
quantum gravity. To this aim, we consider a diffeomorphism invariant functional
integral over scalar functions. The construction defines a covariant,
Feynman-like, spacetime formalism for quantum gravity and relates this theory
to the spin foam mo... | [
{
"created": "Tue, 30 Jun 1998 16:21:28 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Oct 1998 15:47:20 GMT",
"version": "v2"
}
] | 2016-08-25 | [
[
"Rovelli",
"Carlo",
""
]
] | We construct the operator that projects on the physical states in loop quantum gravity. To this aim, we consider a diffeomorphism invariant functional integral over scalar functions. The construction defines a covariant, Feynman-like, spacetime formalism for quantum gravity and relates this theory to the spin foam mode... |
1709.02395 | Suprit Singh | Viqar Husain and Suprit Singh | On the Penrose inequality in anti-deSitter space | 4 pages. Accepted | Phys. Rev. D 96, 104055 (2017) | 10.1103/PhysRevD.96.104055 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For asymptotically flat spacetimes the Penrose inequality gives an initial
data test for the weak cosmic censorship hypothesis. We give a formulation of
this inequality for asymptotically anti-deSitter (AAdS) spacetimes, and show
that the inequality holds for time asymmetric data in spherical symmetry. Our
analysis i... | [
{
"created": "Thu, 7 Sep 2017 18:00:11 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Nov 2017 19:51:29 GMT",
"version": "v2"
}
] | 2017-12-06 | [
[
"Husain",
"Viqar",
""
],
[
"Singh",
"Suprit",
""
]
] | For asymptotically flat spacetimes the Penrose inequality gives an initial data test for the weak cosmic censorship hypothesis. We give a formulation of this inequality for asymptotically anti-deSitter (AAdS) spacetimes, and show that the inequality holds for time asymmetric data in spherical symmetry. Our analysis is ... |
1511.09117 | Vasilis Oikonomou | V.K. Oikonomou | Reissner-Nordstr\"om Black Holes in Mimetic $F(R)$ Gravity | null | Universe 2016, 2(2), 10 | 10.3390/universe2020010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study under which conditions the Reissner-Nordstr\"om-anti
de Sitter black hole can be a solution of the vacuum mimetic $F(R)$ gravity
with Lagrange multiplier and mimetic scalar potential. As we demonstrate, the
resulting picture in the mimetic $F(R)$ gravity case, is different in
comparison to the ... | [
{
"created": "Mon, 30 Nov 2015 00:26:04 GMT",
"version": "v1"
}
] | 2016-06-14 | [
[
"Oikonomou",
"V. K.",
""
]
] | In this paper we study under which conditions the Reissner-Nordstr\"om-anti de Sitter black hole can be a solution of the vacuum mimetic $F(R)$ gravity with Lagrange multiplier and mimetic scalar potential. As we demonstrate, the resulting picture in the mimetic $F(R)$ gravity case, is different in comparison to the or... |
0803.0608 | Shahar Hod | Shahar Hod | Lifetime of unstable hairy black holes | 5 pages | Phys.Lett.B661:175-178,2008 | 10.1016/j.physletb.2008.02.010 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | During the last two decades solutions of black holes with various types of
"hair" have been discovered. Remarkably, it has been established that many of
these hairy black holes are unstable-- under small perturbations the hair may
collapse. While the static sector of theories admitting hair is well explored
by now, o... | [
{
"created": "Wed, 5 Mar 2008 08:52:29 GMT",
"version": "v1"
}
] | 2011-03-31 | [
[
"Hod",
"Shahar",
""
]
] | During the last two decades solutions of black holes with various types of "hair" have been discovered. Remarkably, it has been established that many of these hairy black holes are unstable-- under small perturbations the hair may collapse. While the static sector of theories admitting hair is well explored by now, our... |
gr-qc/0608140 | Scott A. Hughes | Scott A. Hughes | (Sort of) Testing relativity with extreme mass ratio inspirals | 8 pages, 2 figures, for the Proceedings of the Sixth International
LISA Symposium | null | 10.1063/1.2405049 | null | gr-qc astro-ph | null | The inspirals of ``small'' ($1 - 100 M_\odot$) compact bodies through highly
relativistic orbits of massive (several $\times 10^5 M_\odot -$ several $\times
10^6 M_\odot$) black holes are among the most anticipated sources for the LISA
gravitational-wave antenna. The measurement of these waves is expected to map
the ... | [
{
"created": "Thu, 31 Aug 2006 14:27:01 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Hughes",
"Scott A.",
""
]
] | The inspirals of ``small'' ($1 - 100 M_\odot$) compact bodies through highly relativistic orbits of massive (several $\times 10^5 M_\odot -$ several $\times 10^6 M_\odot$) black holes are among the most anticipated sources for the LISA gravitational-wave antenna. The measurement of these waves is expected to map the sp... |
gr-qc/9412074 | Jacques Legare | J. Legare and J. W. Moffat | Test-Particle Motion in the Nonsymmetric Gravitational Theory | 8 pages, REVTeX 3.0. Some minor corrections turned into a complete
rewrite. For the most part, the final results remain unchanged. However the
approach is different, and more results are supplied | null | null | UTPT-94-38 | gr-qc | null | We present a derivation of the equation of motion for a test-particle in the
framework of the nonsymmetric gravitational theory. Three possible couplings of
the test-particle to the non-symmetric gravitational field are explored. The
equation of motion is found to be similar in form to the standard geodesic
equation ... | [
{
"created": "Thu, 22 Dec 1994 21:47:48 GMT",
"version": "v1"
},
{
"created": "Tue, 30 May 1995 12:59:40 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Legare",
"J.",
""
],
[
"Moffat",
"J. W.",
""
]
] | We present a derivation of the equation of motion for a test-particle in the framework of the nonsymmetric gravitational theory. Three possible couplings of the test-particle to the non-symmetric gravitational field are explored. The equation of motion is found to be similar in form to the standard geodesic equation of... |
1312.3657 | Alexander Stottmeister | Alexander Stottmeister and Thomas Thiemann | Structural aspects of loop quantum gravity and loop quantum cosmology
from an algebraic perspective | null | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We comment on structural properties of the algebras $\mathfrak{A}_{LQG/LQC}$
underlying loop quantum gravity and loop quantum cosmology, especially the
representation theory, relating the appearance of the (dynamically induced)
superselection structure ($\theta$-sectors) in loop quantum cosmology to
recently proposed... | [
{
"created": "Thu, 12 Dec 2013 21:31:19 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Apr 2015 01:23:09 GMT",
"version": "v2"
}
] | 2015-04-10 | [
[
"Stottmeister",
"Alexander",
""
],
[
"Thiemann",
"Thomas",
""
]
] | We comment on structural properties of the algebras $\mathfrak{A}_{LQG/LQC}$ underlying loop quantum gravity and loop quantum cosmology, especially the representation theory, relating the appearance of the (dynamically induced) superselection structure ($\theta$-sectors) in loop quantum cosmology to recently proposed r... |
1107.3173 | L. Arturo Urena-Lopez | L. Arturo Urena-Lopez, Lizbeth M. Fernandez | Black holes and the absorption rate of cosmological scalar fields | 5 pages, 5 color figures, uses REVTex | Phys.Rev.D84:044052,2011 | 10.1103/PhysRevD.84.044052 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the absorption of a massless scalar field by a static black hole.
Using the continuity equation that arises from the Klein-Gordon equation, it is
possible to define a normalized absorption rate $\Gamma(t)$ for the scalar
field as it falls into the black hole. It is found that the absorption mainly
depends up... | [
{
"created": "Fri, 15 Jul 2011 22:27:54 GMT",
"version": "v1"
}
] | 2011-09-15 | [
[
"Urena-Lopez",
"L. Arturo",
""
],
[
"Fernandez",
"Lizbeth M.",
""
]
] | We study the absorption of a massless scalar field by a static black hole. Using the continuity equation that arises from the Klein-Gordon equation, it is possible to define a normalized absorption rate $\Gamma(t)$ for the scalar field as it falls into the black hole. It is found that the absorption mainly depends upon... |
1002.4552 | David Brizuela | David Brizuela, Gerhard Schaefer | Fourth-post-Newtonian-exact approximation to General Relativity | Replaced by the published version. Some clarifications and references
added. | Phys.Rev.D81:084014,2010 | 10.1103/PhysRevD.81.084014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An approximation to General Relativity is presented that agrees with the
Einstein field equations up to and including the fourth post-Newtonian (PN)
order. This approximation is formulated in a fully constrained scheme: all
involved equations are explicitly elliptic except the wave equation that
describes the two ind... | [
{
"created": "Wed, 24 Feb 2010 14:44:26 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Apr 2010 17:58:54 GMT",
"version": "v2"
}
] | 2010-04-14 | [
[
"Brizuela",
"David",
""
],
[
"Schaefer",
"Gerhard",
""
]
] | An approximation to General Relativity is presented that agrees with the Einstein field equations up to and including the fourth post-Newtonian (PN) order. This approximation is formulated in a fully constrained scheme: all involved equations are explicitly elliptic except the wave equation that describes the two indep... |
2010.02028 | Yoshimasa Kurihara | Yoshimasa Kurihara | Symplectic structure for general relativity and
Einstein-Brillouin-Keller quantization | 21 pages, no figure | null | 10.1088/1361-6382/abbc44 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hamiltonian system of general relativity and its quantization without any
matter or gauge fields are discussed on the basis of the symplectic geometrical
theory. A symplectic geometry of classical general relativity is constructed
using a generalized phase space for pure gravity. Prequantization of the
symplectic... | [
{
"created": "Fri, 2 Oct 2020 04:42:55 GMT",
"version": "v1"
}
] | 2020-10-06 | [
[
"Kurihara",
"Yoshimasa",
""
]
] | The Hamiltonian system of general relativity and its quantization without any matter or gauge fields are discussed on the basis of the symplectic geometrical theory. A symplectic geometry of classical general relativity is constructed using a generalized phase space for pure gravity. Prequantization of the symplectic m... |
2105.03149 | Krishnendu De Dr. | Krishnendu De Uday Chand De, Abdallah Abdelhameed Syied, Nasser Bin
Turki and Suliman Alsaeed | Perfect fluid spacetimes and gradient solitons | More authors are added in the new version and many mistakes are
considered and corrected | Journal of Nonlinear Mathematical Physics, 29 (2022), 843-858 | 10.1007/s44198-022-00066-5 | null | gr-qc math.DG | http://creativecommons.org/licenses/by/4.0/ | This article deals with the investigation of perfect fluid spacetimes endowed
with concircular vector field. It is shown that in a perfect fluid spacetime
with concircular vector field, the velocity vector field annihilates the
conformal curvature tensor and in dimension 4, a perfect fluid spacetime is a
generalized ... | [
{
"created": "Fri, 7 May 2021 10:19:15 GMT",
"version": "v1"
},
{
"created": "Sun, 6 Jun 2021 12:38:37 GMT",
"version": "v2"
},
{
"created": "Sat, 21 May 2022 12:37:10 GMT",
"version": "v3"
}
] | 2024-02-05 | [
[
"De",
"Krishnendu De Uday Chand",
""
],
[
"Syied",
"Abdallah Abdelhameed",
""
],
[
"Turki",
"Nasser Bin",
""
],
[
"Alsaeed",
"Suliman",
""
]
] | This article deals with the investigation of perfect fluid spacetimes endowed with concircular vector field. It is shown that in a perfect fluid spacetime with concircular vector field, the velocity vector field annihilates the conformal curvature tensor and in dimension 4, a perfect fluid spacetime is a generalized Ro... |
2211.05265 | Pu-Xin Lin | Pu-Xin Lin, Hai-Long Huang, Jun Zhang, Yun-Song Piao | On primordial universe in anti-de Sitter landscape | 7 pages, 6 figures + references | Physics Letters B , Volume 855 C (2024) | 10.1016/j.physletb.2024.138768 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | How the spacetime evolved non-perturbatively in a landscape with multiple
anti-de Sitter (AdS) vacua, which is theoretically well-motivated, has always
been a matter of concern. As a step towards this issue, we perform (3+1)D
numerical relativity simulations for the inhomogeneous universe in an AdS
landscape, and fin... | [
{
"created": "Wed, 9 Nov 2022 23:51:03 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Jun 2024 08:03:54 GMT",
"version": "v2"
}
] | 2024-06-11 | [
[
"Lin",
"Pu-Xin",
""
],
[
"Huang",
"Hai-Long",
""
],
[
"Zhang",
"Jun",
""
],
[
"Piao",
"Yun-Song",
""
]
] | How the spacetime evolved non-perturbatively in a landscape with multiple anti-de Sitter (AdS) vacua, which is theoretically well-motivated, has always been a matter of concern. As a step towards this issue, we perform (3+1)D numerical relativity simulations for the inhomogeneous universe in an AdS landscape, and find ... |
1205.3088 | T. P. Singh | Priti Mishra and Tejinder P. Singh | Modified gravity as a common cause for cosmic acceleration and flat
galaxy rotation curves | 7 pages, 1 fgure. Honorable Mention in Gravity Research Foundation
Essay Contest 2012. v2: Two minor typos corrected | Int. J. Mod. Phys. 21 (2012) 1242002 | 10.1142/S0218271812420023 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Flat galaxy rotation curves and the accelerating Universe both imply the
existence of a critical acceleration, which is of the same order of magnitude
in both the cases, in spite of the galactic and cosmic length scales being
vastly different. Yet, it is customary to explain galactic acceleration by
invoking gravitat... | [
{
"created": "Mon, 14 May 2012 16:40:09 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Jul 2012 09:47:28 GMT",
"version": "v2"
}
] | 2012-07-16 | [
[
"Mishra",
"Priti",
""
],
[
"Singh",
"Tejinder P.",
""
]
] | Flat galaxy rotation curves and the accelerating Universe both imply the existence of a critical acceleration, which is of the same order of magnitude in both the cases, in spite of the galactic and cosmic length scales being vastly different. Yet, it is customary to explain galactic acceleration by invoking gravitatio... |
gr-qc/0209094 | Lukas Richterek | L. Richterek, J. Novotny, J. Horsky | Einstein-Maxwell fields generated from the gamma-metric and their limits | 20 pages, LaTeX2e, 8 eps-figures. to be published in Czech. J. Phys | Czech.J.Phys. 52 (2002) 1021-1040 | 10.1023/A:1020581415399 | null | gr-qc | null | Two solutions of the coupled Einstein-Maxwell field equations are found by
means of the Horsky-Mitskievitch generating conjecture. The vacuum limit of
those obtained classes of spacetimes is the seed gamma-metric and each of the
generated solutions is connected with one Killing vector of the seed spacetime.
Some of t... | [
{
"created": "Wed, 25 Sep 2002 07:05:06 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Richterek",
"L.",
""
],
[
"Novotny",
"J.",
""
],
[
"Horsky",
"J.",
""
]
] | Two solutions of the coupled Einstein-Maxwell field equations are found by means of the Horsky-Mitskievitch generating conjecture. The vacuum limit of those obtained classes of spacetimes is the seed gamma-metric and each of the generated solutions is connected with one Killing vector of the seed spacetime. Some of the... |
2007.08441 | Sam Collingbourne | Sam C. Collingbourne | The Gregory-Laflamme Instability of the Schwarzschild Black String
Exterior | 41 pages, 2 figures | null | 10.1063/5.0043059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, a direct rigorous mathematical proof of the Gregory-Laflamme
instability for the five-dimensional Schwarzschild black string is presented.
Under a choice of ansatz for the perturbation and a gauge choice, the
linearised vacuum Einstein equation reduces to an ODE problem for a single
function. In this w... | [
{
"created": "Thu, 16 Jul 2020 16:26:02 GMT",
"version": "v1"
}
] | 2024-06-19 | [
[
"Collingbourne",
"Sam C.",
""
]
] | In this paper, a direct rigorous mathematical proof of the Gregory-Laflamme instability for the five-dimensional Schwarzschild black string is presented. Under a choice of ansatz for the perturbation and a gauge choice, the linearised vacuum Einstein equation reduces to an ODE problem for a single function. In this wor... |
2009.09947 | Tanmoy Paul | S.D. Odintsov, V.K. Oikonomou, Tanmoy Paul | From a Bounce to the Dark Energy Era with $F(R)$ Gravity | CQG accepted | null | 10.1088/1361-6382/abbc47 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we consider a cosmological scenario in which the Universe
contracts initially having a bouncing-like behavior, and accordingly after it
bounces off, it decelerates following a matter dominated like evolution and at
very large positive times it undergoes through an accelerating stage. Our aim
is to study ... | [
{
"created": "Mon, 21 Sep 2020 15:13:11 GMT",
"version": "v1"
}
] | 2020-12-02 | [
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
],
[
"Paul",
"Tanmoy",
""
]
] | In this work we consider a cosmological scenario in which the Universe contracts initially having a bouncing-like behavior, and accordingly after it bounces off, it decelerates following a matter dominated like evolution and at very large positive times it undergoes through an accelerating stage. Our aim is to study su... |
1207.2509 | Giacomo Rosati | Giovanni Amelino-Camelia, Valerio Astuti, Giacomo Rosati | Gravity's weight on worldline fuzziness | 8 pages. This essay received an honorable mention in the 2012 Essay
Competition of the Gravity Research Foundation | Int. J. Mod. Phys. D 21 (2012) 1242012 | 10.1142/S0218271812420126 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate a connection between recent results in 3D quantum gravity,
providing an effective noncommutative-spacetime description, and some earlier
heuristic descriptions of a quantum-gravity contribution to the fuzziness of
the worldlines of particles. We show that 3D-gravity-inspired spacetime
noncommutativity ... | [
{
"created": "Tue, 10 Jul 2012 23:00:55 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Jan 2013 14:01:27 GMT",
"version": "v2"
}
] | 2013-01-22 | [
[
"Amelino-Camelia",
"Giovanni",
""
],
[
"Astuti",
"Valerio",
""
],
[
"Rosati",
"Giacomo",
""
]
] | We investigate a connection between recent results in 3D quantum gravity, providing an effective noncommutative-spacetime description, and some earlier heuristic descriptions of a quantum-gravity contribution to the fuzziness of the worldlines of particles. We show that 3D-gravity-inspired spacetime noncommutativity re... |
1306.6052 | David Radice | David Radice and Luciano Rezzolla and Filippo Galeazzi | Beyond second-order convergence in simulations of binary neutron stars
in full general-relativity | Improved the alignment procedure with PN. Version accepted as a
Letter on MNRAS. 5 pages, 3 figures | MNRAS (2014) Vol. 437 L46-L50 | 10.1093/mnrasl/slt137 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Despite the recent rapid progress in numerical relativity, a convergence
order less than the second has so far plagued codes solving the Einstein-Euler
system of equations. We report simulations of the inspiral of binary neutron
stars in quasi-circular orbits computed with a new code employing high-order,
high-resolu... | [
{
"created": "Tue, 25 Jun 2013 18:12:14 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Oct 2013 22:40:02 GMT",
"version": "v2"
}
] | 2013-12-16 | [
[
"Radice",
"David",
""
],
[
"Rezzolla",
"Luciano",
""
],
[
"Galeazzi",
"Filippo",
""
]
] | Despite the recent rapid progress in numerical relativity, a convergence order less than the second has so far plagued codes solving the Einstein-Euler system of equations. We report simulations of the inspiral of binary neutron stars in quasi-circular orbits computed with a new code employing high-order, high-resoluti... |
gr-qc/9707023 | Pietro Menotti | Pietro Menotti (Department of Physics, University of Pisa, Italy) | Group theoretical derivation of Liouville action for Regge surfaces | 10 pages, LaTex file | Nucl.Phys. B523 (1998) 611-619 | 10.1016/S0550-3213(98)00124-2 | IFUP-TH 32/97 | gr-qc hep-lat hep-th | null | We show that the structure of the Liouville action on a two dimensional Regge
surface of the topology of the sphere and of the torus is determined by the
invariance under the transformations induced by the conformal Killing vector
fields and under modular transformations.
| [
{
"created": "Thu, 10 Jul 1997 12:24:22 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Menotti",
"Pietro",
"",
"Department of Physics, University of Pisa, Italy"
]
] | We show that the structure of the Liouville action on a two dimensional Regge surface of the topology of the sphere and of the torus is determined by the invariance under the transformations induced by the conformal Killing vector fields and under modular transformations. |
2108.02808 | Jing Ming | Jing Ming, Maria Alessandra Papa, Heinz-Bernd Eggenstein, Bernd
Machenschalk, Benjamin Steltner, Reinhard Prix, Bruce Allen, Oliver Behnke | Results from an Einstein@Home search for continuous gravitational waves
from G347.3 at low frequencies in LIGO O2 data | null | null | 10.3847/1538-4357/ac35cb | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We present results of a search for periodic gravitational wave signals with
frequency between 20 and 400 Hz, from the neutron star in the supernova remnant
G347.3-0.5, using LIGO O2 public data. The search is deployed on the volunteer
computing project Einstein@Home, with thousands of participants donating
compute cy... | [
{
"created": "Thu, 5 Aug 2021 18:43:59 GMT",
"version": "v1"
}
] | 2022-02-02 | [
[
"Ming",
"Jing",
""
],
[
"Papa",
"Maria Alessandra",
""
],
[
"Eggenstein",
"Heinz-Bernd",
""
],
[
"Machenschalk",
"Bernd",
""
],
[
"Steltner",
"Benjamin",
""
],
[
"Prix",
"Reinhard",
""
],
[
"Allen",
"Bruce",
... | We present results of a search for periodic gravitational wave signals with frequency between 20 and 400 Hz, from the neutron star in the supernova remnant G347.3-0.5, using LIGO O2 public data. The search is deployed on the volunteer computing project Einstein@Home, with thousands of participants donating compute cycl... |
2406.16113 | Krishnendu De Dr. | Uday Chand De and Krishnendu De | Pseudo generalized Ricci-recurrent spacetimes with certain applications
to modified gravity | null | Chinese Journal of Physics (2024) | 10.1016/j.cjph.2024.05.025 | null | gr-qc math.DG | http://creativecommons.org/licenses/by/4.0/ | In this article we introduce and characterize a pseudo generalized
Ricci-recurrent spacetimes. At first, we produce an example to justify the
existence of such a spacetime. Then, it is provided that a pseudo generalized
Ricci-recurrent generalized Robertson-Walker spacetime represents a perfect
fluid spacetime and a ... | [
{
"created": "Sun, 23 Jun 2024 14:02:30 GMT",
"version": "v1"
}
] | 2024-06-25 | [
[
"De",
"Uday Chand",
""
],
[
"De",
"Krishnendu",
""
]
] | In this article we introduce and characterize a pseudo generalized Ricci-recurrent spacetimes. At first, we produce an example to justify the existence of such a spacetime. Then, it is provided that a pseudo generalized Ricci-recurrent generalized Robertson-Walker spacetime represents a perfect fluid spacetime and a ps... |
1710.01533 | Pisin Chen | Pisin Chen, William G. Unruh, Chih-Hung Wu, Dong-han Yeom | Pre-Hawking radiation cannot prevent the formation of apparent horizon | 6 pages, 2 figures | Phys. Rev. D 97, 064045 (2018) | 10.1103/PhysRevD.97.064045 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As an attempt to solve the black hole information loss paradox, recently
there has been the suggestion that, due to semi-classical effects, a
pre-Hawking radiation must exist during the gravitational collapse of matter,
which in turn prevents the apparent horizon from forming. Assuming the
pre-Hawking radiation does ... | [
{
"created": "Wed, 4 Oct 2017 10:28:51 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Oct 2017 07:03:08 GMT",
"version": "v2"
}
] | 2018-04-04 | [
[
"Chen",
"Pisin",
""
],
[
"Unruh",
"William G.",
""
],
[
"Wu",
"Chih-Hung",
""
],
[
"Yeom",
"Dong-han",
""
]
] | As an attempt to solve the black hole information loss paradox, recently there has been the suggestion that, due to semi-classical effects, a pre-Hawking radiation must exist during the gravitational collapse of matter, which in turn prevents the apparent horizon from forming. Assuming the pre-Hawking radiation does ex... |
1204.3505 | Daniel Cartin | Daniel Cartin | Conserved quantities in isotropic loop quantum cosmology | 6 pages, to be published in Europhysics Letters | EPL 98 30007 (2012) | 10.1209/0295-5075/98/30007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop an action principle for those models arising from isotropic loop
quantum cosmology, and show that there is a natural conserved quantity $Q$ for
the discrete difference equation arising from the Hamiltonian constraint. This
quantity $Q$ relates the semi-classical limit of the wavefunction at large
values of... | [
{
"created": "Mon, 16 Apr 2012 14:54:51 GMT",
"version": "v1"
}
] | 2013-04-04 | [
[
"Cartin",
"Daniel",
""
]
] | We develop an action principle for those models arising from isotropic loop quantum cosmology, and show that there is a natural conserved quantity $Q$ for the discrete difference equation arising from the Hamiltonian constraint. This quantity $Q$ relates the semi-classical limit of the wavefunction at large values of t... |
1608.01472 | Jafar Khodagholizadeh | Jafar Khodagholizadeh, Amir H. Abbassi and Ali A. Asgari | Tensor Modes Damping in Matter and Vacuum Dominated Era | 17 pages, 2 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present paper has developed an integro-differential equation to propagate
cosmological gravitation waves in matter-dominated era in accounting for the
presence of free streaming neutrinos as a traceless transverse tensor part of
the anisotropic stress tensor. Its focus is on short and long wavelengths of
GWs that... | [
{
"created": "Thu, 4 Aug 2016 09:11:49 GMT",
"version": "v1"
}
] | 2016-08-08 | [
[
"Khodagholizadeh",
"Jafar",
""
],
[
"Abbassi",
"Amir H.",
""
],
[
"Asgari",
"Ali A.",
""
]
] | The present paper has developed an integro-differential equation to propagate cosmological gravitation waves in matter-dominated era in accounting for the presence of free streaming neutrinos as a traceless transverse tensor part of the anisotropic stress tensor. Its focus is on short and long wavelengths of GWs that e... |
0903.2073 | Juan Carlos Degollado | Juan Carlos Degollado, Dario Nunez, Carlos Palenzuela | Signatures of the sources in the gravitational waves of a perturbed
Schwarzschild black hole | 17 pages, 8 figures | Gen.Rel.Grav.42:1287-1310,2010 | 10.1007/s10714-009-0906-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The explicit form of perturbation equation for the $\Psi_4$ Weyl scalar,
containing the matter source terms, is derived for general type D spacetimes.
It is described in detail the particular case of the Schwarzschild spacetime
using in-going penetrating coordinates. As a practical application, we focused
on the emis... | [
{
"created": "Wed, 11 Mar 2009 23:08:54 GMT",
"version": "v1"
}
] | 2011-02-19 | [
[
"Degollado",
"Juan Carlos",
""
],
[
"Nunez",
"Dario",
""
],
[
"Palenzuela",
"Carlos",
""
]
] | The explicit form of perturbation equation for the $\Psi_4$ Weyl scalar, containing the matter source terms, is derived for general type D spacetimes. It is described in detail the particular case of the Schwarzschild spacetime using in-going penetrating coordinates. As a practical application, we focused on the emissi... |
2401.13718 | Bouzenada Abdelmalek . | Faizuddin Ahmed and Abdelmalek Bouzenada | Rainbow gravity effects on quantum dynamics of scalar and oscillator
fields in a topological defect cosmological space-time | null | null | null | null | gr-qc hep-th | http://creativecommons.org/publicdomain/zero/1.0/ | In this paper, we investigate the quantum dynamics of scalar and oscillator
fields in a topological defect space-time background under the influence of
rainbow gravity's. The rainbow gravity's are introduced into the considered
cosmological space-time geometry by replacing the temporal part $dt \to
\frac{dt}{\mathcal... | [
{
"created": "Wed, 24 Jan 2024 09:50:59 GMT",
"version": "v1"
}
] | 2024-01-26 | [
[
"Ahmed",
"Faizuddin",
""
],
[
"Bouzenada",
"Abdelmalek",
""
]
] | In this paper, we investigate the quantum dynamics of scalar and oscillator fields in a topological defect space-time background under the influence of rainbow gravity's. The rainbow gravity's are introduced into the considered cosmological space-time geometry by replacing the temporal part $dt \to \frac{dt}{\mathcal{F... |
gr-qc/0105067 | Martin Bojowald | Martin Bojowald | The Inverse Scale Factor in Isotropic Quantum Geometry | 17 pages, 4 figures | Phys.Rev. D64 (2001) 084018 | 10.1103/PhysRevD.64.084018 | CGPG-01/5-1 | gr-qc hep-th | null | The inverse scale factor, which in classical cosmological models diverges at
the singularity, is quantized in isotropic models of loop quantum cosmology by
using techniques which have been developed in quantum geometry for a
quantization of general relativity. This procedure results in a bounded
operator which is dia... | [
{
"created": "Fri, 18 May 2001 17:47:16 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Bojowald",
"Martin",
""
]
] | The inverse scale factor, which in classical cosmological models diverges at the singularity, is quantized in isotropic models of loop quantum cosmology by using techniques which have been developed in quantum geometry for a quantization of general relativity. This procedure results in a bounded operator which is diago... |
1006.3979 | Hongsheng Zhang | Hongsheng Zhang, Xin-Zhou Li | De Sitter ground state of scalar-tensor gravity and its fluctuation with
dust | 9 pages, 9figs | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An exact de Sitter solution of scalar-tensor gravity is found, in which the
non-minimal coupling scalar is rolling along a non-constant potential. Based on
this solution, a dust-filled FRW universe is explored in frame of scalar-tensor
gravity. The effective dark energy induced by the sole non-minimal scalar can
be q... | [
{
"created": "Mon, 21 Jun 2010 02:20:43 GMT",
"version": "v1"
}
] | 2010-06-22 | [
[
"Zhang",
"Hongsheng",
""
],
[
"Li",
"Xin-Zhou",
""
]
] | An exact de Sitter solution of scalar-tensor gravity is found, in which the non-minimal coupling scalar is rolling along a non-constant potential. Based on this solution, a dust-filled FRW universe is explored in frame of scalar-tensor gravity. The effective dark energy induced by the sole non-minimal scalar can be qui... |
1302.5690 | Fernando Oscar Minotti | Fernando O. Minotti | Scalar-tensor theories and asymmetric resonant cavities | 14 pages, no figures (this version was revised and corrected) | Grav. & Cosmol. 19 (2013) 201 | 10.1134/S0202289313030080 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently published experimental results indicate the appeareance of unusual
forces on asymmetric, electromagnetic resonant cavities. It is argued here that
a particular class of scalar-tensor theories of gravity could account for this
effect.
| [
{
"created": "Fri, 22 Feb 2013 20:20:46 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Mar 2013 20:04:48 GMT",
"version": "v2"
},
{
"created": "Thu, 13 Jun 2013 14:39:10 GMT",
"version": "v3"
}
] | 2013-10-10 | [
[
"Minotti",
"Fernando O.",
""
]
] | Recently published experimental results indicate the appeareance of unusual forces on asymmetric, electromagnetic resonant cavities. It is argued here that a particular class of scalar-tensor theories of gravity could account for this effect. |
1803.02491 | Jie-Xiong Mo | Jie-Xiong Mo, Shan-Quan Lan | Phase transition and heat engine efficiency of phantom AdS black holes | 9pages,4figures. Comments welcome | null | 10.1140/epjc/s10052-018-6153-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Phase transition and heat engine efficiency of phantom AdS black holes are
investigated with peculiar properties found. In the non-extended phase space,
we probe the possibility of $T-S$ criticality in both the canonical ensemble
and grand-canonical ensemble. It is shown that no $T-S$ criticality exists for
the phant... | [
{
"created": "Wed, 7 Mar 2018 00:39:02 GMT",
"version": "v1"
}
] | 2018-09-26 | [
[
"Mo",
"Jie-Xiong",
""
],
[
"Lan",
"Shan-Quan",
""
]
] | Phase transition and heat engine efficiency of phantom AdS black holes are investigated with peculiar properties found. In the non-extended phase space, we probe the possibility of $T-S$ criticality in both the canonical ensemble and grand-canonical ensemble. It is shown that no $T-S$ criticality exists for the phantom... |
1706.06183 | David Garfinkle | David Garfinkle | Matters of Gravity, The Newsletter of the Division of Gravitational
Physics of the American Physical Society, Volume 49, June 2017 | more thorough second paragraph for the GW170104 article | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | DGRAV News:
We hear that ....
DGRAV student travel grants
Research Briefs:
The Discovery of GW170104
Obituary:
Remembering Vishu
Remembering Cecile DeWitt-Morette
Remembering Larry Shepley
Remembering Marcus Ansorg
Conference Reports:
EGM20
| [
{
"created": "Mon, 19 Jun 2017 21:24:44 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Jun 2017 19:54:08 GMT",
"version": "v2"
}
] | 2017-06-26 | [
[
"Garfinkle",
"David",
""
]
] | DGRAV News: We hear that .... DGRAV student travel grants Research Briefs: The Discovery of GW170104 Obituary: Remembering Vishu Remembering Cecile DeWitt-Morette Remembering Larry Shepley Remembering Marcus Ansorg Conference Reports: EGM20 |
0709.1041 | Alberto Balfagon | Alberto C. Balfagon | Rainich theory applied to m-rank tensors in n-dimensions | 7 pages, submitted to GRG | null | null | null | gr-qc | null | We show a tensorial-computational way to find out conditions that must fulfil
an m-rank tensor in arbitrary dimension in order to be algebraically the
energy-momentum tensor of some field. We apply in this paper our method to
three 2-rank tensors: electromagnetic, mass less scalar field and perfect fluid
tensors. Fin... | [
{
"created": "Fri, 7 Sep 2007 10:22:40 GMT",
"version": "v1"
}
] | 2007-09-10 | [
[
"Balfagon",
"Alberto C.",
""
]
] | We show a tensorial-computational way to find out conditions that must fulfil an m-rank tensor in arbitrary dimension in order to be algebraically the energy-momentum tensor of some field. We apply in this paper our method to three 2-rank tensors: electromagnetic, mass less scalar field and perfect fluid tensors. Final... |
1503.03907 | Mercedes Martin-Benito | Laura Castell\'o Gomar, Mercedes Mart\'in-Benito, and Guillermo A.
Mena Marug\'an | Gauge-Invariant Perturbations in Hybrid Quantum Cosmology | 35 pages. Published in JCAP. Some misprints corrected | JCAP 1506 (2015) 06, 045 | 10.1088/1475-7516/2015/06/045 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider cosmological perturbations around homogeneous and isotropic
spacetimes minimally coupled to a scalar field and present a formulation which
is designed to preserve covariance. We truncate the action at quadratic
perturbative order and particularize our analysis to flat compact spatial
sections and a field ... | [
{
"created": "Thu, 12 Mar 2015 22:32:15 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Nov 2015 15:45:35 GMT",
"version": "v2"
}
] | 2015-11-30 | [
[
"Gomar",
"Laura Castelló",
""
],
[
"Martín-Benito",
"Mercedes",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
]
] | We consider cosmological perturbations around homogeneous and isotropic spacetimes minimally coupled to a scalar field and present a formulation which is designed to preserve covariance. We truncate the action at quadratic perturbative order and particularize our analysis to flat compact spatial sections and a field po... |
1705.04897 | Osvaldo Pablo Santillan | O. Santillan and M. Scornavacche | The Newton constant and gravitational waves in some vector field
adjusting mechanisms | Some subtle detail about the gauge are corrected. No further changes | null | 10.1088/1475-7516/2017/10/048 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As is well known, there exist some Lorentz breaking scenarios which explain
the smallness of the cosmological constant in the present era. An important
aspect to analyze is the propagation of gravitational waves and the screening
or enhancement of the Newton constant $G_N$ in these models. The problem is
that the Lor... | [
{
"created": "Sat, 13 May 2017 23:15:28 GMT",
"version": "v1"
},
{
"created": "Thu, 18 May 2017 02:09:58 GMT",
"version": "v2"
},
{
"created": "Sun, 4 Jun 2017 04:37:10 GMT",
"version": "v3"
},
{
"created": "Tue, 8 Aug 2017 01:49:36 GMT",
"version": "v4"
},
{
"cre... | 2017-11-01 | [
[
"Santillan",
"O.",
""
],
[
"Scornavacche",
"M.",
""
]
] | As is well known, there exist some Lorentz breaking scenarios which explain the smallness of the cosmological constant in the present era. An important aspect to analyze is the propagation of gravitational waves and the screening or enhancement of the Newton constant $G_N$ in these models. The problem is that the Loren... |
1903.12578 | Reginald Christian Bernardo | Reginald Christian Bernardo and Ian Vega | Tailoring cosmologies in cubic shift-symmetric Horndeski gravity | 24 pages, 10 figures | JCAP 10 (2019) 058 | 10.1088/1475-7516/2019/10/058 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a method for furnishing flat Friedman-Robertson-Walker spacetimes
with nearly arbitrary dynamics in an important subclass of cubic Horndeski
theory -- specifically shift-symmetric, cubic Horndeski theory with a vanishing
conserved current. This builds on insight from previous work on the
construction of st... | [
{
"created": "Fri, 29 Mar 2019 15:38:29 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Jun 2019 15:33:07 GMT",
"version": "v2"
}
] | 2019-10-29 | [
[
"Bernardo",
"Reginald Christian",
""
],
[
"Vega",
"Ian",
""
]
] | We present a method for furnishing flat Friedman-Robertson-Walker spacetimes with nearly arbitrary dynamics in an important subclass of cubic Horndeski theory -- specifically shift-symmetric, cubic Horndeski theory with a vanishing conserved current. This builds on insight from previous work on the construction of stat... |
1302.6249 | Mariam Bouhmadi-Lopez | Mariam Bouhmadi-Lopez, Pisin Chen, Yen-Wei Liu | Tradeoff between Smoother and Sooner "Little Rip" | 9 pages, 4 figures. RevTex4-1. Title modified and discussion
expanded. Version accepted in European Physical Journal C | Eur. Phys. J. C (2013) 73: 2546 | 10.1140/epjc/s10052-013-2546-z | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There exists dark energy models that predict the occurrence of "little rip".
At the point of little rip the Hubble rate and its cosmic time derivative
approach infinity, which is quite similar to the big rip singularity except
that the former happens at infinite future while the latter at a finite cosmic
time; both e... | [
{
"created": "Mon, 25 Feb 2013 21:01:53 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Sep 2013 10:43:53 GMT",
"version": "v2"
}
] | 2013-10-01 | [
[
"Bouhmadi-Lopez",
"Mariam",
""
],
[
"Chen",
"Pisin",
""
],
[
"Liu",
"Yen-Wei",
""
]
] | There exists dark energy models that predict the occurrence of "little rip". At the point of little rip the Hubble rate and its cosmic time derivative approach infinity, which is quite similar to the big rip singularity except that the former happens at infinite future while the latter at a finite cosmic time; both eve... |
2306.08771 | Tousif Islam | Tousif Islam | Interplay between numerical-relativity and black hole perturbation
theory in the intermediate-mass-ratio regime | 11 pages, 10 figures | Phys. Rev. D 108, 044013 (2023) | 10.1103/PhysRevD.108.044013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the interplay between numerical relativity (NR) and
point-particle black hole perturbation theory (ppBHPT) for quasi-circular
non-spinning binary black holes in the intermediate mass ratio regime:
7<=q<=128 (where $q:=m_1/m_2$ is the mass ratio of the binary with m_1 and m_2
being the mass of the prima... | [
{
"created": "Wed, 14 Jun 2023 22:38:08 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Aug 2023 06:40:41 GMT",
"version": "v2"
}
] | 2023-08-09 | [
[
"Islam",
"Tousif",
""
]
] | We investigate the interplay between numerical relativity (NR) and point-particle black hole perturbation theory (ppBHPT) for quasi-circular non-spinning binary black holes in the intermediate mass ratio regime: 7<=q<=128 (where $q:=m_1/m_2$ is the mass ratio of the binary with m_1 and m_2 being the mass of the primary... |
1106.1692 | Enrico Barausse | Enrico Barausse, Vitor Cardoso and Gaurav Khanna | Testing the Cosmic Censorship Conjecture with point particles: the
effect of radiation reaction and the self-force | 13 pages, 1 table, 3 figures. Expanded discussion of the photon limit
of the dissipative and conservative self-force, references added. Accepted
for publication in PRD (in press) | Phys. Rev. D 84, 104006 (2011) | 10.1103/PhysRevD.84.104006 | null | gr-qc astro-ph.GA astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A classical thought-experiment to destroy black holes was envisaged by Wald
in 1974: it consists of throwing particles with large angular momentum into an
extremal black hole, checking whether their capture can over-spin the black
hole past the extremal limit and create a naked singularity. Wald showed that
in the te... | [
{
"created": "Thu, 9 Jun 2011 00:24:52 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Oct 2011 22:12:34 GMT",
"version": "v2"
}
] | 2011-11-07 | [
[
"Barausse",
"Enrico",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Khanna",
"Gaurav",
""
]
] | A classical thought-experiment to destroy black holes was envisaged by Wald in 1974: it consists of throwing particles with large angular momentum into an extremal black hole, checking whether their capture can over-spin the black hole past the extremal limit and create a naked singularity. Wald showed that in the test... |
2306.03386 | Giovanni Otalora | Manuel Gonzalez-Espinoza, Giovanni Otalora, Yoelsy Leyva, Joel
Saavedra | Phase-space analysis of torsion-coupled dilatonic ghost condensate | 12 pages, 16 figures, 3 Tables. Updated to match the published
version in EPJC | null | 10.1140/epjc/s10052-024-12653-5 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We studied the cosmological dynamics of a dilatonic ghost condensate field as
a source of dark energy, which is non-minimally coupled to gravity through
torsion. We performed a detailed phase-space analysis by finding all the
critical points and their stability conditions. Also, we compared our results
with the lates... | [
{
"created": "Tue, 6 Jun 2023 03:58:14 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Mar 2024 16:04:36 GMT",
"version": "v2"
}
] | 2024-03-26 | [
[
"Gonzalez-Espinoza",
"Manuel",
""
],
[
"Otalora",
"Giovanni",
""
],
[
"Leyva",
"Yoelsy",
""
],
[
"Saavedra",
"Joel",
""
]
] | We studied the cosmological dynamics of a dilatonic ghost condensate field as a source of dark energy, which is non-minimally coupled to gravity through torsion. We performed a detailed phase-space analysis by finding all the critical points and their stability conditions. Also, we compared our results with the latest ... |
1701.08499 | Ion I. Cotaescu | Ion I. Cotaescu | Rest frames and relativistic effects on de Sitter spacetimes | 10 pages (revtex4-1) no figures, accepted for publication in EPJC.
arXiv admin note: text overlap with arXiv:1604.00882 | null | 10.1140/epjc/s10052-017-5032-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the Nachtmann boosting method of introducing coordinates on
de Siter manifolds can be completed with suitable gauge transformations able to
keep under control the transformation under isometries of the conserved
quantities. With this method, the rest local charts (or natural frames) are
defined point... | [
{
"created": "Mon, 30 Jan 2017 07:06:07 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Feb 2017 15:06:10 GMT",
"version": "v2"
},
{
"created": "Wed, 28 Jun 2017 10:41:58 GMT",
"version": "v3"
}
] | 2017-09-13 | [
[
"Cotaescu",
"Ion I.",
""
]
] | It is shown that the Nachtmann boosting method of introducing coordinates on de Siter manifolds can be completed with suitable gauge transformations able to keep under control the transformation under isometries of the conserved quantities. With this method, the rest local charts (or natural frames) are defined pointin... |
gr-qc/0005054 | Yi-Ping Qin | Yi-Ping Qin | An Accelerated Expansion Model in the Absence of the Cosmological
Constant | 6 pages | null | null | null | gr-qc | null | Based on some observations, the apparent energy, associated with gravity, of
vacuums is defined, with that of normal vacuums to be zero and that of the
vacuums losing some energy to be negative. An important application of the
energy is its contribution to Einstein's equation. A cosmological model,
accounting for rec... | [
{
"created": "Mon, 15 May 2000 16:58:02 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Qin",
"Yi-Ping",
""
]
] | Based on some observations, the apparent energy, associated with gravity, of vacuums is defined, with that of normal vacuums to be zero and that of the vacuums losing some energy to be negative. An important application of the energy is its contribution to Einstein's equation. A cosmological model, accounting for recen... |
1201.4241 | Norbert Van den Bergh | Norbert Van den Bergh, John Carminati, Hamid Reza Karimian, Peter Huf | Shear-free perfect fluids with a solenoidal electric curvature | 9 pages | null | 10.1088/0264-9381/29/10/105010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that the vorticity or the expansion vanishes for any shear-free
perfect fluid solution of the Einstein field equations where the pressure
satisfies a barotropic equation of state and the spatial divergence of the
electric part of the Weyl tensor is zero.
| [
{
"created": "Fri, 20 Jan 2012 09:56:11 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jan 2012 08:50:01 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"Bergh",
"Norbert Van den",
""
],
[
"Carminati",
"John",
""
],
[
"Karimian",
"Hamid Reza",
""
],
[
"Huf",
"Peter",
""
]
] | We prove that the vorticity or the expansion vanishes for any shear-free perfect fluid solution of the Einstein field equations where the pressure satisfies a barotropic equation of state and the spatial divergence of the electric part of the Weyl tensor is zero. |
gr-qc/0302047 | Irina Radinschi | I. Radinschi (Department of Physics, "Gh. Asachi" Technical
University, Iasi, Romania) | Energy Distribution of a Black Hole Solution in Heterotic String Theory | 6 pages, LaTex | "Quantum Cosmology Research Trends. Horizons in World Physics",
Volume 246, (edited by Albert Reimer, Nova Science, 2005) | null | null | gr-qc | null | We calculate the energy distribution of a charged black hole solution in
heterotic string theory in the M{\o}ller prescription.
| [
{
"created": "Wed, 12 Feb 2003 13:44:43 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Radinschi",
"I.",
"",
"Department of Physics, \"Gh. Asachi\" Technical\n University, Iasi, Romania"
]
] | We calculate the energy distribution of a charged black hole solution in heterotic string theory in the M{\o}ller prescription. |
1911.05016 | Claudio Paris | Ignazio Ciufolini, Richard A. Matzner, Justin C. Feng, Antonio
Paolozzi, David P. Rubincam, Erricos C. Pavlis, John C. Ries, Giampiero
Sindoni, Claudio Paris | A new laser-ranged satellite for General Relativity and space geodesy:
IV. Thermal drag and the LARES 2 space experiment | 17 pages, 9 figures | Ciufolini, I., Matzner, R.A., Feng, J.C. et al. Eur. Phys. J. Plus
(2018) 133: 333. https://doi.org/10.1140/epjp/i2018-12174-y | 10.1140/epjp/i2018-12174-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In three previous papers we presented the LARES 2 space experiment aimed at a
very accurate test of frame-dragging and at other tests of fundamental physics
and measurements of space geodesy and geodynamics. We presented the error
sources in the LARES 2 experiment, its error budget, Monte Carlo simulations
and covari... | [
{
"created": "Tue, 12 Nov 2019 17:22:07 GMT",
"version": "v1"
}
] | 2019-11-13 | [
[
"Ciufolini",
"Ignazio",
""
],
[
"Matzner",
"Richard A.",
""
],
[
"Feng",
"Justin C.",
""
],
[
"Paolozzi",
"Antonio",
""
],
[
"Rubincam",
"David P.",
""
],
[
"Pavlis",
"Erricos C.",
""
],
[
"Ries",
"John C.",
... | In three previous papers we presented the LARES 2 space experiment aimed at a very accurate test of frame-dragging and at other tests of fundamental physics and measurements of space geodesy and geodynamics. We presented the error sources in the LARES 2 experiment, its error budget, Monte Carlo simulations and covarian... |
1408.3487 | Christina Rugina | Christina Rugina | Hidden symmetries and Killing spinor of 5-dimensional minimal gauged
supergravity solutions | 27 pages. arXiv admin note: substantial text overlap with
arXiv:1108.4388; revised version contains clarifications (last paragraph) at
the end of sec. 4; corrected, new file | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the hidden symmetries and existence of Killing spinors of D=5
minimal gauged supergravity solutions which admit a Killing-Maxwell system in
the sense of Carter, such as the Chong-Cveti$\check{c}$-L\"{u}-Pope (CCLP)
Kerr-dS black hole spacetime and a 5-dimensional minimal gauged supergravity
solution en... | [
{
"created": "Fri, 15 Aug 2014 07:37:33 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Aug 2014 07:44:17 GMT",
"version": "v2"
},
{
"created": "Thu, 2 Apr 2020 11:43:10 GMT",
"version": "v3"
}
] | 2020-04-03 | [
[
"Rugina",
"Christina",
""
]
] | We investigate the hidden symmetries and existence of Killing spinors of D=5 minimal gauged supergravity solutions which admit a Killing-Maxwell system in the sense of Carter, such as the Chong-Cveti$\check{c}$-L\"{u}-Pope (CCLP) Kerr-dS black hole spacetime and a 5-dimensional minimal gauged supergravity solution endo... |
0710.5607 | Valerio Bozza | V. Bozza | Extreme gravitational lensing by supermassive black holes | 8 pages, 2 figures, review talk at Italian-Pakistan Workshop on
Relativistic Astrophysics, 20-22 June 2008, Lecce (Italy) | Nuovo Cim.B122:547-556,2007 | 10.1393/ncb/i2007-10378-6 | null | gr-qc astro-ph | null | Extreme gravitational lensing refers to the bending of photon trajectories
that pass very close to supermassive black holes and that cannot be described
in the conventional weak deflection limit. A complete analytical description of
the whole expected phenomenology has been achieved in the recent years using
the stro... | [
{
"created": "Tue, 30 Oct 2007 10:50:54 GMT",
"version": "v1"
}
] | 2010-11-11 | [
[
"Bozza",
"V.",
""
]
] | Extreme gravitational lensing refers to the bending of photon trajectories that pass very close to supermassive black holes and that cannot be described in the conventional weak deflection limit. A complete analytical description of the whole expected phenomenology has been achieved in the recent years using the strong... |
gr-qc/0110080 | Sean A. Hayward | Sean A. Hayward, Sung-Won Kim, Hyunjoo Lee | Dilatonic wormholes: construction, operation, maintenance and collapse
to black holes | 9 pages, 7 figures | Phys.Rev. D65 (2002) 064003 | 10.1103/PhysRevD.65.064003 | null | gr-qc hep-th | null | The CGHS two-dimensional dilaton gravity model is generalized to include a
ghost Klein-Gordon field, i.e. with negative gravitational coupling. This
exotic radiation supports the existence of static traversible wormhole
solutions, analogous to Morris-Thorne wormholes. Since the field equations are
explicitly integrab... | [
{
"created": "Thu, 18 Oct 2001 07:36:53 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Hayward",
"Sean A.",
""
],
[
"Kim",
"Sung-Won",
""
],
[
"Lee",
"Hyunjoo",
""
]
] | The CGHS two-dimensional dilaton gravity model is generalized to include a ghost Klein-Gordon field, i.e. with negative gravitational coupling. This exotic radiation supports the existence of static traversible wormhole solutions, analogous to Morris-Thorne wormholes. Since the field equations are explicitly integrable... |
1207.2957 | Tomas Ledvinka | J. Bicak, J. Katz, T. Ledvinka and D. Lynden-Bell | Effects of rotating gravitational waves | 15 pages, 4 figures | Phys. Rev. D 85 124003, 2012 | 10.1103/PhysRevD.85.124003 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study gravitational waves to first and second order in amplitude in vacuum
asymptotically flat spacetimes. The Einstein equations are solved to first
order and these solutions are superposed to form a time-symmetric ingoing and
then outgoing pulse regular everywhere. The waves are assumed to have
odd-parity and a ... | [
{
"created": "Thu, 12 Jul 2012 13:41:49 GMT",
"version": "v1"
}
] | 2012-07-13 | [
[
"Bicak",
"J.",
""
],
[
"Katz",
"J.",
""
],
[
"Ledvinka",
"T.",
""
],
[
"Lynden-Bell",
"D.",
""
]
] | We study gravitational waves to first and second order in amplitude in vacuum asymptotically flat spacetimes. The Einstein equations are solved to first order and these solutions are superposed to form a time-symmetric ingoing and then outgoing pulse regular everywhere. The waves are assumed to have odd-parity and a no... |
1709.08738 | Maximo Banados | M\'aximo Ba\~nados | A note on the uniqueness of the dRGT massive gravity theory | 19 pages, no figures | null | 10.1134/S0202289318040047 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the problem of gravity coupled to a background metric
$\eta_{\mu\nu}$, looking for ghost free interactions. It is known that
elimination of the Boulware-Desewr ghost is equivalent to a certain Hessian
condition on the interacting potential. We elaborate on this equation and
provide a proof that dRGT potent... | [
{
"created": "Mon, 25 Sep 2017 22:48:00 GMT",
"version": "v1"
}
] | 2018-12-05 | [
[
"Bañados",
"Máximo",
""
]
] | We revisit the problem of gravity coupled to a background metric $\eta_{\mu\nu}$, looking for ghost free interactions. It is known that elimination of the Boulware-Desewr ghost is equivalent to a certain Hessian condition on the interacting potential. We elaborate on this equation and provide a proof that dRGT potentia... |
gr-qc/9712080 | Carlos Augusto Romero | A.Barros and C.Romero | On the weak field approximation of Brans-Dicke theory of gravity | 12 pages, latex, no figures | Phys.Lett. A245 (1998) 31-34 | 10.1016/S0375-9601(98)00382-X | null | gr-qc | null | It is shown that in the weak field approximation solutions of Brans-Dicke
equations are simply related to the solutions of General Relativity equations
for the same matter distribution. A simple method is developed which permits to
obtain Brans-Dicke solutions from Einstein solutions when both theories are
considered... | [
{
"created": "Thu, 18 Dec 1997 17:57:42 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Barros",
"A.",
""
],
[
"Romero",
"C.",
""
]
] | It is shown that in the weak field approximation solutions of Brans-Dicke equations are simply related to the solutions of General Relativity equations for the same matter distribution. A simple method is developed which permits to obtain Brans-Dicke solutions from Einstein solutions when both theories are considered i... |
1810.12276 | Tomi Koivisto | Damianos Iosifidis, Tomi Koivisto | Scale transformations in metric-affine geometry | 19 pages + 10 for appendices and references | Universe 2019, 5(3), 82 | 10.3390/universe5030082 | NORDITA-2018-109 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article presents an exhaustive classification of metric-affine theories
according to their scale symmetries. First it is clarified that there are three
relevant definitions of a scale transformation. These correspond to a
projective transformation of the connection, a rescaling of the orthonormal
frame, and a co... | [
{
"created": "Mon, 29 Oct 2018 17:43:37 GMT",
"version": "v1"
}
] | 2021-04-02 | [
[
"Iosifidis",
"Damianos",
""
],
[
"Koivisto",
"Tomi",
""
]
] | This article presents an exhaustive classification of metric-affine theories according to their scale symmetries. First it is clarified that there are three relevant definitions of a scale transformation. These correspond to a projective transformation of the connection, a rescaling of the orthonormal frame, and a comb... |
gr-qc/0212089 | T. P. Singh | Sashideep Gutti, T. P. Singh, Pranesh Sundararajan and Cenalo Vaz | Gravitational collapse of an infinite dust cylinder | Two additional authors. Significantly revised version. Solution shown
to describe homogeneous collapse. Matching with exterior discussed. Key
results unchanged. Submitted for publication | null | null | null | gr-qc | null | We examine the gravitational collapse of an infinite cylindrical distribution
of time like dust. In order to simplify the calculation we make an assumption
that the axial and azimuthal metric functions are equal. It is shown that the
resulting solution describes homogeneous collapse. We show that the interior
metric ... | [
{
"created": "Mon, 23 Dec 2002 12:14:44 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Dec 2002 06:50:38 GMT",
"version": "v2"
},
{
"created": "Tue, 28 Sep 2004 11:47:16 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Gutti",
"Sashideep",
""
],
[
"Singh",
"T. P.",
""
],
[
"Sundararajan",
"Pranesh",
""
],
[
"Vaz",
"Cenalo",
""
]
] | We examine the gravitational collapse of an infinite cylindrical distribution of time like dust. In order to simplify the calculation we make an assumption that the axial and azimuthal metric functions are equal. It is shown that the resulting solution describes homogeneous collapse. We show that the interior metric ca... |
1803.04134 | Xiang-Hua Zhai | Xiang-Hua Zhai, Qiang Wen, Rui-Hui Lin and Xin-Zhou Li | Diagnostics for generalized power-law torsion-matter coupling $f(T)$
model | 9 pages,12 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The currently accelerated expansion of our Universe is unarguably one of the
most intriguing problems in today's physics research. Two realistic non-minimal
torsion-matter coupling $f(T)$ models have been established and studied in our
previous papers [Phys. Rev. D92, 104038(2015) and Eur. Phys. J. C77, 504(2017)]
ai... | [
{
"created": "Mon, 12 Mar 2018 07:11:08 GMT",
"version": "v1"
}
] | 2018-03-13 | [
[
"Zhai",
"Xiang-Hua",
""
],
[
"Wen",
"Qiang",
""
],
[
"Lin",
"Rui-Hui",
""
],
[
"Li",
"Xin-Zhou",
""
]
] | The currently accelerated expansion of our Universe is unarguably one of the most intriguing problems in today's physics research. Two realistic non-minimal torsion-matter coupling $f(T)$ models have been established and studied in our previous papers [Phys. Rev. D92, 104038(2015) and Eur. Phys. J. C77, 504(2017)] aimi... |
gr-qc/0304070 | Jose M. Martin-Garcia | Jose M. Martin-Garcia and Carsten Gundlach | Global structure of Choptuik's critical solution in scalar field
collapse | 28 pages, 25 figures. Version with non-bitmapped figures can be found
at http://www.maths.soton.ac.uk/staff/Martin-Garcia/critcont | Phys.Rev. D68 (2003) 024011 | 10.1103/PhysRevD.68.024011 | null | gr-qc | null | At the threshold of black hole formation in the gravitational collapse of a
scalar field a naked singularity is formed through a universal critical
solution that is discretely self-similar. We study the global spacetime
structure of this solution. It is spherically symmetric, discretely
self-similar, regular at the c... | [
{
"created": "Sun, 20 Apr 2003 10:48:55 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Martin-Garcia",
"Jose M.",
""
],
[
"Gundlach",
"Carsten",
""
]
] | At the threshold of black hole formation in the gravitational collapse of a scalar field a naked singularity is formed through a universal critical solution that is discretely self-similar. We study the global spacetime structure of this solution. It is spherically symmetric, discretely self-similar, regular at the cen... |
2105.05960 | Maite Mateu-Lucena | Maite Mateu-Lucena, Sascha Husa, Marta Colleoni, H\'ector Estell\'es,
Cecilio Garc\'ia-Quir\'os, David Keitel, Maria de Lluc Planas and Antoni
Ramos-Buades | Parameter estimation with the current generation of phenomenological
waveform models applied to the black hole mergers of GWTC-1 | 24 pages, 19 figures, 9 tables matches version accepted by MNRAS | Monthly Notices of the Royal Astronomical Society 517, 2 (2022),
2403-2425 | 10.1093/mnras/stac2724 | LIGO-P2100133 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the ten confidently detected gravitational-wave signals in the
GWTC-1 catalog which are consistent with mergers of binary black hole systems,
and perform a thorough parameter estimation re-analysis. This is made possible
by using computationally efficient waveform models of the current (fourth)
generation... | [
{
"created": "Wed, 12 May 2021 20:44:17 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Jun 2021 15:11:54 GMT",
"version": "v2"
},
{
"created": "Thu, 22 Sep 2022 10:13:19 GMT",
"version": "v3"
}
] | 2022-10-20 | [
[
"Mateu-Lucena",
"Maite",
""
],
[
"Husa",
"Sascha",
""
],
[
"Colleoni",
"Marta",
""
],
[
"Estellés",
"Héctor",
""
],
[
"García-Quirós",
"Cecilio",
""
],
[
"Keitel",
"David",
""
],
[
"Planas",
"Maria de Lluc",
... | We consider the ten confidently detected gravitational-wave signals in the GWTC-1 catalog which are consistent with mergers of binary black hole systems, and perform a thorough parameter estimation re-analysis. This is made possible by using computationally efficient waveform models of the current (fourth) generation o... |
0812.3436 | Tomas Liko | Tomas Liko | Extending the isolated horizon phase space to string-inspired gravity
models | Ph.D dissertation; Memorial University of Newfoundland; 63 pages; 1
figure; v2: typos corrected | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An isolated horizon (IH) is a null hypersurface at which the geometry is held
fixed. This generalizes the notion of an event horizon so that the black hole
is an object that is in local equilibrium with its (possibly) dynamic
environment. The first law of IH mechanics that arises from the framework
relates quantities... | [
{
"created": "Thu, 18 Dec 2008 04:55:14 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Dec 2008 02:00:37 GMT",
"version": "v2"
}
] | 2008-12-22 | [
[
"Liko",
"Tomas",
""
]
] | An isolated horizon (IH) is a null hypersurface at which the geometry is held fixed. This generalizes the notion of an event horizon so that the black hole is an object that is in local equilibrium with its (possibly) dynamic environment. The first law of IH mechanics that arises from the framework relates quantities t... |
1512.00376 | Scott A. Hughes | Uchupol Ruangsri, Sarah J. Vigeland, and Scott A. Hughes | Gyroscopes orbiting black holes: A frequency-domain approach to
precession and spin-curvature coupling for spinning bodies on generic Kerr
orbits | 30 pages, 11 figures. Final accepted version, to appear in Phys. Rev.
D | Phys. Rev. D 94, 044008 (2016) | 10.1103/PhysRevD.94.044008 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A small body orbiting a black hole follows a trajectory that, at leading
order, is a geodesic of the black hole spacetime. Much effort has gone into
computing "self force" corrections to this motion, arising from the small
body's own contributions to the system's spacetime. Another correction to the
motion arises fro... | [
{
"created": "Tue, 1 Dec 2015 18:29:47 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Aug 2016 18:14:12 GMT",
"version": "v2"
}
] | 2016-08-10 | [
[
"Ruangsri",
"Uchupol",
""
],
[
"Vigeland",
"Sarah J.",
""
],
[
"Hughes",
"Scott A.",
""
]
] | A small body orbiting a black hole follows a trajectory that, at leading order, is a geodesic of the black hole spacetime. Much effort has gone into computing "self force" corrections to this motion, arising from the small body's own contributions to the system's spacetime. Another correction to the motion arises from ... |
1410.5808 | Manuel Malaver D | Neeraj Pant, Narendra Pradhan, Manuel Malaver | Anisotropic fluid star model in isotropic coordinates | Accepted for publication in International Journal of Astrophysics and
Space Science. Special Issue: Compact Objects in General Relativity,
10/06/2014 Keywords: Isotropic Coordinates, Anisotropic Neutral Fluid,
Anisotropy Parameter, Super-Dense Star model, Radial Pressure, Tangential
Pressure 1 figure, 2 tables,... | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a spherically symmetric solution of the general relativistic field
equations in isotropic coordinates for anisotropic neutral fluid, compatible
with a super dense star modeling by considering a specific choice of anisotropy
factor that includes a positive constant defined as anisotropy parameter, which
var... | [
{
"created": "Tue, 21 Oct 2014 01:52:23 GMT",
"version": "v1"
}
] | 2014-10-23 | [
[
"Pant",
"Neeraj",
""
],
[
"Pradhan",
"Narendra",
""
],
[
"Malaver",
"Manuel",
""
]
] | We present a spherically symmetric solution of the general relativistic field equations in isotropic coordinates for anisotropic neutral fluid, compatible with a super dense star modeling by considering a specific choice of anisotropy factor that includes a positive constant defined as anisotropy parameter, which varie... |
gr-qc/9704058 | Akihiro Ishibashi | Akihiro Ishibashi and Hideki Ishihara | Bubble wall perturbations coupled with gravitational waves | 23 pages with 3 eps figures | Phys.Rev.D56:3446-3458,1997 | 10.1103/PhysRevD.56.3446 | TIT/HEP-366/COSMO-83 | gr-qc | null | We study a coupled system of gravitational waves and a domain wall which is
the boundary of a vacuum bubble in de Sitter spacetime. To treat the system, we
use the metric junction formalism of Israel. We show that the dynamical degree
of the bubble wall is lost and the bubble wall can oscillate only while the
gravita... | [
{
"created": "Tue, 22 Apr 1997 12:45:14 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Ishibashi",
"Akihiro",
""
],
[
"Ishihara",
"Hideki",
""
]
] | We study a coupled system of gravitational waves and a domain wall which is the boundary of a vacuum bubble in de Sitter spacetime. To treat the system, we use the metric junction formalism of Israel. We show that the dynamical degree of the bubble wall is lost and the bubble wall can oscillate only while the gravitati... |
2010.09373 | Grigoris Panotopoulos | Grigoris Panotopoulos, Angel Rincon and Ilidio Lopes | Radial oscillations and tidal Love numbers of dark energy stars | 7 pages, 2 tables, 4 figures, to appear in EPJ Plus | Eur. Phys. J. Plus 135, 856 (2020) | 10.1140/epjp/s13360-020-00867-x | null | gr-qc astro-ph.CO astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the properties of relativistic stars made of dark energy. We
model stellar structure assuming i) isotropic perfect fluid and ii) a dark
energy inspired equation of state, the generalized equation of state of
Chaplygin gas, as we will be calling it. The mass-to-radius profiles, the tidal
Love numbers as... | [
{
"created": "Mon, 19 Oct 2020 10:44:10 GMT",
"version": "v1"
}
] | 2020-10-27 | [
[
"Panotopoulos",
"Grigoris",
""
],
[
"Rincon",
"Angel",
""
],
[
"Lopes",
"Ilidio",
""
]
] | We investigate the properties of relativistic stars made of dark energy. We model stellar structure assuming i) isotropic perfect fluid and ii) a dark energy inspired equation of state, the generalized equation of state of Chaplygin gas, as we will be calling it. The mass-to-radius profiles, the tidal Love numbers as w... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.