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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2406.13654 | Lorenzo Pompili | F\'elix-Louis Juli\'e, Lorenzo Pompili, Alessandra Buonanno | Inspiral-merger-ringdown waveforms in Einstein-scalar-Gauss-Bonnet
gravity within the effective-one-body formalism | 33 pages, 11 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Gravitational waves (GWs) provide a unique opportunity to test General
Relativity (GR) in the highly dynamical, strong-field regime. So far, the
majority of the tests of GR with GW signals have been carried out following
parametrized, theory-independent approaches. An alternative avenue consists in
developing inspira... | [
{
"created": "Wed, 19 Jun 2024 15:57:58 GMT",
"version": "v1"
}
] | 2024-06-21 | [
[
"Julié",
"Félix-Louis",
""
],
[
"Pompili",
"Lorenzo",
""
],
[
"Buonanno",
"Alessandra",
""
]
] | Gravitational waves (GWs) provide a unique opportunity to test General Relativity (GR) in the highly dynamical, strong-field regime. So far, the majority of the tests of GR with GW signals have been carried out following parametrized, theory-independent approaches. An alternative avenue consists in developing inspiral-... |
2003.10908 | Shambel Sahlu Akalu | Shambel Sahlu, Joseph Ntahompagaze, Amare Abebe and David F.Mota | Accelerating universe in modified teleparallel gravity theory | Conference proceeding: Nuclear Activity in Galaxies Across Cosmic
Time" (Ethiopia) accepted for publishing under the Cambridge University
Press, eds. M. Povic, P. Marziani, J. Masegosa, H. Netzer, S. H. Negu, and S.
B. Tessema | Proc. IAU 15 (2019) 397-399 | 10.1017/S1743921320003567 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper studies the cosmology of accelerating expansion of the universe in
modified teleparallel gravity theory. We discuss the cosmology of $f(T,B)$
gravity theory and its implication to the new general form of the equation of
state parameter $w_{TB}$ for explaining the late-time accelerating expansion of
the uni... | [
{
"created": "Mon, 23 Mar 2020 12:59:23 GMT",
"version": "v1"
}
] | 2021-02-03 | [
[
"Sahlu",
"Shambel",
""
],
[
"Ntahompagaze",
"Joseph",
""
],
[
"Abebe",
"Amare",
""
],
[
"Mota",
"David F.",
""
]
] | This paper studies the cosmology of accelerating expansion of the universe in modified teleparallel gravity theory. We discuss the cosmology of $f(T,B)$ gravity theory and its implication to the new general form of the equation of state parameter $w_{TB}$ for explaining the late-time accelerating expansion of the unive... |
1808.04423 | Saulo Carneiro | S. Carneiro and J. C. Fabris | Scalar field black holes | 8 pages, no figures | Eur. Phys. J. C (2018) 78: 676 | 10.1140/epjc/s10052-018-6161-x | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With a suitable decomposition of its energy-momentum tensor into pressureless
matter and a vacuum type term, we investigate the spherical gravitational
collapse of a minimally coupled, self-interacting scalar field, showing that it
collapses to a singularity. The formed blackhole has a mass $M \sim 1/m$ (in
Planck un... | [
{
"created": "Mon, 13 Aug 2018 19:54:18 GMT",
"version": "v1"
}
] | 2018-08-27 | [
[
"Carneiro",
"S.",
""
],
[
"Fabris",
"J. C.",
""
]
] | With a suitable decomposition of its energy-momentum tensor into pressureless matter and a vacuum type term, we investigate the spherical gravitational collapse of a minimally coupled, self-interacting scalar field, showing that it collapses to a singularity. The formed blackhole has a mass $M \sim 1/m$ (in Planck unit... |
1702.04094 | Fabrizio Tamburini | Fabrizio Tamburini, Mariafelicia De Laurentis, Ignazio Licata, Bo
Thid\'e | Twisted soft photon hair implants on Black Holes | 6 pages 2 figures | null | 10.3390/e19090458 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hawking-Perry-Strominger (HPS) work [1] states a new controversial idea
about the black hole (BH) information paradox [2-5] where BHs maximally
entropize and encode information in their event horizon area [6,7], with no
"hair" were thought to reveal information outside but angular momentum, mass
and electric char... | [
{
"created": "Tue, 14 Feb 2017 07:00:21 GMT",
"version": "v1"
},
{
"created": "Thu, 11 May 2017 03:18:59 GMT",
"version": "v2"
}
] | 2017-10-11 | [
[
"Tamburini",
"Fabrizio",
""
],
[
"De Laurentis",
"Mariafelicia",
""
],
[
"Licata",
"Ignazio",
""
],
[
"Thidé",
"Bo",
""
]
] | The Hawking-Perry-Strominger (HPS) work [1] states a new controversial idea about the black hole (BH) information paradox [2-5] where BHs maximally entropize and encode information in their event horizon area [6,7], with no "hair" were thought to reveal information outside but angular momentum, mass and electric charge... |
2203.03633 | Dennis Obster | Dennis Obster | Tensors and Algebras: An Algebraic Spacetime Interpretation for Tensor
Models | null | SIGMA 19 (2023), 076, 43 pages | 10.3842/SIGMA.2023.076 | YITP-22-23 | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by-sa/4.0/ | The quest for a consistent theory for quantum gravity is one of the most
challenging problems in theoretical high-energy physics. An often-used approach
is to describe the gravitational degrees of freedom by the metric tensor or
related variables, and finding a way to quantise this. In the canonical tensor
model, the... | [
{
"created": "Mon, 7 Mar 2022 06:54:57 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Oct 2023 07:52:07 GMT",
"version": "v2"
}
] | 2023-10-19 | [
[
"Obster",
"Dennis",
""
]
] | The quest for a consistent theory for quantum gravity is one of the most challenging problems in theoretical high-energy physics. An often-used approach is to describe the gravitational degrees of freedom by the metric tensor or related variables, and finding a way to quantise this. In the canonical tensor model, the g... |
1304.1325 | Matej Pavsic | Matej Pav\v{s}i\v{c} | Pais-Uhlenbeck Oscillator with a Benign Friction Force | 6 pages, 1 figure; reference added; typos corrected | Physical Review D 87, 107502 (2013) | 10.1103/PhysRevD.87.107502 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the Pais-Uhlenbeck oscillator with damping, considered by
Nesterenko, is a special case of a more general oscillator that has not only a
first order, but also a third order friction term. If the corresponding damping
constants, \alpha\ and \beta, are both positive and below certain critical
values, t... | [
{
"created": "Thu, 4 Apr 2013 11:17:06 GMT",
"version": "v1"
},
{
"created": "Thu, 23 May 2013 11:58:14 GMT",
"version": "v2"
}
] | 2013-05-24 | [
[
"Pavšič",
"Matej",
""
]
] | It is shown that the Pais-Uhlenbeck oscillator with damping, considered by Nesterenko, is a special case of a more general oscillator that has not only a first order, but also a third order friction term. If the corresponding damping constants, \alpha\ and \beta, are both positive and below certain critical values, the... |
gr-qc/0308081 | Charles Wang | Charles Wang | Action principle for nonlinear parametric quantization of gravity | 3 pages | null | null | null | gr-qc | null | The derivation of the recently proposed nonlinear quantum evolution of
gravity from an action principle is considered in this brief note. It is shown
to be possible if a set of consistency conditions are satisfied that are
analogous to the Dirac relations for the super-Hamiltonian and momenta in
classical canonical g... | [
{
"created": "Mon, 25 Aug 2003 14:05:11 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Aug 2003 20:25:31 GMT",
"version": "v2"
},
{
"created": "Sun, 9 Nov 2003 11:44:28 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Wang",
"Charles",
""
]
] | The derivation of the recently proposed nonlinear quantum evolution of gravity from an action principle is considered in this brief note. It is shown to be possible if a set of consistency conditions are satisfied that are analogous to the Dirac relations for the super-Hamiltonian and momenta in classical canonical gra... |
2407.09579 | Sanasam Surendra Singh | Meghanil Sinha, S. Surendra Singh | Gravastar model in the structure of $f(R,L_{m}, T)$ modified theory of
gravity | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Gravastar ( or the Gravitational Vacuum Star ) is a very serious
alternatives proposed to the principle of the Black Hole, the model of which
was originally developed by Mazur and Mottola. A Gravastar is an astronomically
hypothetically condensed object which is a gravitationally dark vacuum star or
a gravitation... | [
{
"created": "Fri, 12 Jul 2024 03:04:14 GMT",
"version": "v1"
}
] | 2024-07-16 | [
[
"Sinha",
"Meghanil",
""
],
[
"Singh",
"S. Surendra",
""
]
] | The Gravastar ( or the Gravitational Vacuum Star ) is a very serious alternatives proposed to the principle of the Black Hole, the model of which was originally developed by Mazur and Mottola. A Gravastar is an astronomically hypothetically condensed object which is a gravitationally dark vacuum star or a gravitational... |
gr-qc/0104028 | Mauricio Cataldo | Mauricio Cataldo, Norman Cruz, Sergio del Campo and Samuel Lepe | Holographic principle and the dominant energy condition for Kasner type
metrics | 4 pages, Latex, accepted in Phys. Lett. B | Phys.Lett.B509:138-142,2001 | 10.1016/S0370-2693(01)00490-7 | null | gr-qc | null | In this letter we study adiabatic anisotropic matter filled Bianchi type I
models of the Kasner form together with the cosmological holographic bound. We
find that the dominant energy condition and the holographic bound give
precisely the same constraint on the scale factor parameters that appear in the
metric.
| [
{
"created": "Tue, 10 Apr 2001 21:53:19 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Apr 2001 13:37:47 GMT",
"version": "v2"
}
] | 2009-02-05 | [
[
"Cataldo",
"Mauricio",
""
],
[
"Cruz",
"Norman",
""
],
[
"del Campo",
"Sergio",
""
],
[
"Lepe",
"Samuel",
""
]
] | In this letter we study adiabatic anisotropic matter filled Bianchi type I models of the Kasner form together with the cosmological holographic bound. We find that the dominant energy condition and the holographic bound give precisely the same constraint on the scale factor parameters that appear in the metric. |
1407.1483 | Roldao da Rocha | Roldao da Rocha, A. M. Kuerten | Classical Tests of General Relativity: Probing Topologically Charged
Black Holes on Brane Worlds in f(R) Bulk | 14 pages, 2 figures, to appear in Gen. Relat. Grav | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The perihelion precession, the deflection of light, and the radar echo delay
are classical tests of General Relativity here used to probe brane world
topologically charged black holes in a f(R) bulk and to constrain the parameter
that arises from the Shiromizu-Maeda-Sasaki procedure applied to a f(R) bulk as
well. Th... | [
{
"created": "Sun, 6 Jul 2014 11:20:58 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Jul 2014 12:26:24 GMT",
"version": "v2"
},
{
"created": "Sat, 4 Jun 2016 22:41:26 GMT",
"version": "v3"
}
] | 2016-06-07 | [
[
"da Rocha",
"Roldao",
""
],
[
"Kuerten",
"A. M.",
""
]
] | The perihelion precession, the deflection of light, and the radar echo delay are classical tests of General Relativity here used to probe brane world topologically charged black holes in a f(R) bulk and to constrain the parameter that arises from the Shiromizu-Maeda-Sasaki procedure applied to a f(R) bulk as well. The ... |
1004.1016 | Piotr T. Chru\'sciel | Piotr T. Chru\'sciel and Gregory J. Galloway and Daniel Pollack | Mathematical general relativity: a sampler | Some updates. A shortened version, to appear in the Bulletin of the
AMS, is available online at
http://www.ams.org/journals/bull/0000-000-00/S0273-0979-2010-01304-5 | null | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide an introduction to selected recent advances in the mathematical
understanding of Einstein's theory of gravitation.
| [
{
"created": "Wed, 7 Apr 2010 07:01:21 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Aug 2010 14:36:29 GMT",
"version": "v2"
}
] | 2015-03-14 | [
[
"Chruściel",
"Piotr T.",
""
],
[
"Galloway",
"Gregory J.",
""
],
[
"Pollack",
"Daniel",
""
]
] | We provide an introduction to selected recent advances in the mathematical understanding of Einstein's theory of gravitation. |
gr-qc/9905099 | Siming Liu | Fernando de Felice, Liu Siming and Yu Yunqiang | Relativistic Charged Spheres II: Regularity and Stability | revtex, 13 pages. five EPS figures. Accepted by CQG | Class.Quant.Grav. 16 (1999) 2669-2680 | 10.1088/0264-9381/16/8/307 | null | gr-qc | null | We present new results concerning the existence of static, electrically
charged, perfect fluid spheres that have a regular interior and are arbitrarily
close to a maximally charged black-hole state. These configurations are
described by exact solutions of Einstein's field equations. A family of these
solutions had al... | [
{
"created": "Thu, 27 May 1999 14:44:02 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"de Felice",
"Fernando",
""
],
[
"Siming",
"Liu",
""
],
[
"Yunqiang",
"Yu",
""
]
] | We present new results concerning the existence of static, electrically charged, perfect fluid spheres that have a regular interior and are arbitrarily close to a maximally charged black-hole state. These configurations are described by exact solutions of Einstein's field equations. A family of these solutions had alre... |
gr-qc/9708003 | R. Balasubramanian | R. Balasubramanian, S.V. Dhurandhar | Estimation of parameters of gravitational waves from coalescing binaries | Revtex file with figures included(18) | Phys.Rev. D57 (1998) 3408-3422 | 10.1103/PhysRevD.57.3408 | IUCAA-97/xx | gr-qc | null | The paper deals with the estimation of parameters of gravitational waves from
coalescing binaries. It explains the discrepancy between the Monte carlo
simulations and the covariance matrix. We include the post-Newtonian as well as
the Newtonian case.
| [
{
"created": "Sun, 3 Aug 1997 04:18:33 GMT",
"version": "v1"
}
] | 2019-08-17 | [
[
"Balasubramanian",
"R.",
""
],
[
"Dhurandhar",
"S. V.",
""
]
] | The paper deals with the estimation of parameters of gravitational waves from coalescing binaries. It explains the discrepancy between the Monte carlo simulations and the covariance matrix. We include the post-Newtonian as well as the Newtonian case. |
1212.6821 | Theodore A. Jacobson | Ted Jacobson | Black holes and Hawking radiation in spacetime and its analogues | 31 pages, 9 figures; to appear in the proceedings of the IX SIGRAV
School on 'Analogue Gravity', Como (Italy), May 2011, eds. D. Faccio et. al.
(Springer) | null | 10.1007/978-3-319-00266-8_1 | null | gr-qc cond-mat.quant-gas hep-th physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | These notes introduce the fundamentals of black hole geometry, the thermality
of the vacuum, and the Hawking effect, in spacetime and its analogues.
Stimulated emission of Hawking radiation, the trans-Planckian question, short
wavelength dispersion, and white hole radiation in the setting of analogue
models are also ... | [
{
"created": "Mon, 31 Dec 2012 05:12:38 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Jacobson",
"Ted",
""
]
] | These notes introduce the fundamentals of black hole geometry, the thermality of the vacuum, and the Hawking effect, in spacetime and its analogues. Stimulated emission of Hawking radiation, the trans-Planckian question, short wavelength dispersion, and white hole radiation in the setting of analogue models are also di... |
2305.07939 | Julio Arrechea | Julio Arrechea, Carlos Barcel\'o | Stellar equilibrium on a physical vacuum soil | 14 pages, 2 figures. Essay received Honorable Mention at the Gravity
Research Foundation 2023 Awards for Essays on Gravitation | null | 10.1142/S0218271823420063 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the repulsive effects associated to the zero-point energies of
quantum fields are capable of supporting ultracompact stars that overcome the
compactness limits present in general relativity for any object in hydrostatic
equilibrium. These objects are exact self-consistent solutions in semiclassical
gravi... | [
{
"created": "Sat, 13 May 2023 15:05:29 GMT",
"version": "v1"
}
] | 2023-09-26 | [
[
"Arrechea",
"Julio",
""
],
[
"Barceló",
"Carlos",
""
]
] | We show that the repulsive effects associated to the zero-point energies of quantum fields are capable of supporting ultracompact stars that overcome the compactness limits present in general relativity for any object in hydrostatic equilibrium. These objects are exact self-consistent solutions in semiclassical gravity... |
1009.5112 | Friedrich W. Hehl | Peter Baekler (Duesseldorf), Friedrich W. Hehl (Cologne and Columbia,
MO), James M. Nester (Chungli) | Poincare gauge theory of gravity: Friedman cosmology with even and odd
parity modes. Analytic part | Latex computerscript, 25 pages; mistakes corrected, references added,
notation and title slightly changed; accepted by Phys. Rev. D | Phys.Rev.D83:024001,2011 | 10.1103/PhysRevD.83.024001 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a cosmological model in the framework of the Poincar\'e gauge
theory of gravity (PG). The gravitational Lagrangian is quadratic in curvature
and torsion. In our specific model, the Lagrangian contains (i) the curvature
scalar $R$ and the curvature pseudo-scalar $X$ linearly and quadratically
(including an ... | [
{
"created": "Sun, 26 Sep 2010 18:02:05 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Nov 2010 23:52:14 GMT",
"version": "v2"
}
] | 2011-02-25 | [
[
"Baekler",
"Peter",
"",
"Duesseldorf"
],
[
"Hehl",
"Friedrich W.",
"",
"Cologne and Columbia,\n MO"
],
[
"Nester",
"James M.",
"",
"Chungli"
]
] | We propose a cosmological model in the framework of the Poincar\'e gauge theory of gravity (PG). The gravitational Lagrangian is quadratic in curvature and torsion. In our specific model, the Lagrangian contains (i) the curvature scalar $R$ and the curvature pseudo-scalar $X$ linearly and quadratically (including an $R... |
2108.06470 | Yan-Gang Miao | Yang Li and Yan-Gang Miao | Absorption cross section of regular black holes in scalar-tensor
conformal gravity | v1: 27 pages, 3 figures, 2 appendixes; v2: 28 pages, clarifications
added, final version to appear in Physical Review D | Phys. Rev. D 105 (2022) 044031 | 10.1103/PhysRevD.105.044031 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In terms of the complex angular momentum method, we compute the absorption
cross section by analyzing a massless test scalar field around conformally
related black holes. At first, we investigate circular null geodesics and
thereby prove a precondition for calculating the absorption cross section in
the context of co... | [
{
"created": "Sat, 14 Aug 2021 05:35:08 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Jan 2022 08:41:04 GMT",
"version": "v2"
}
] | 2022-02-22 | [
[
"Li",
"Yang",
""
],
[
"Miao",
"Yan-Gang",
""
]
] | In terms of the complex angular momentum method, we compute the absorption cross section by analyzing a massless test scalar field around conformally related black holes. At first, we investigate circular null geodesics and thereby prove a precondition for calculating the absorption cross section in the context of conf... |
1206.2580 | Oleg Zaslavskii | I. V. Tanatarov and O. B. Zaslavskii | Dirty rotating black holes: regularity conditions on stationary horizons | 31 pages. Misprints corrected | Phys. Rev. D 86 (2012) 044019 | 10.1103/PhysRevD.86.044019 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider generic, or "dirty" (surrounded by matter), stationary rotating
black holes with axial symmetry. The restrictions are found on the asymptotic
form of metric in the vicinity of non-extremal, extremal and ultra-extremal
horizons, imposed by the conditions of regularity of increasing strength:
boundedness on... | [
{
"created": "Tue, 12 Jun 2012 16:30:02 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jun 2012 20:54:04 GMT",
"version": "v2"
}
] | 2015-06-05 | [
[
"Tanatarov",
"I. V.",
""
],
[
"Zaslavskii",
"O. B.",
""
]
] | We consider generic, or "dirty" (surrounded by matter), stationary rotating black holes with axial symmetry. The restrictions are found on the asymptotic form of metric in the vicinity of non-extremal, extremal and ultra-extremal horizons, imposed by the conditions of regularity of increasing strength: boundedness on t... |
gr-qc/0110057 | Soon-Tae Hong | Soon-Tae Hong, Won Tae Kim, John J. Oh and Young-Jai Park | Global Embeddings of Two-dimensional Dilatonic Black Holes | 12 pages, no figures | J.Korean Phys.Soc.42:23-28,2003 | null | SOGANG-HEP 285/01 | gr-qc hep-th | null | We obtain minimal (2+1) and (2+2) dimensional global flat embeddings of
uncharged and charged dilatonic black holes in (1+1) dimensions, respectively.
Moreover, we obtain the Hawking temperatures and the black hole ones of these
dilatonic black holes. However, even though the minimal flat embedding
structures are mat... | [
{
"created": "Thu, 11 Oct 2001 08:44:54 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Feb 2003 05:40:28 GMT",
"version": "v2"
}
] | 2009-06-11 | [
[
"Hong",
"Soon-Tae",
""
],
[
"Kim",
"Won Tae",
""
],
[
"Oh",
"John J.",
""
],
[
"Park",
"Young-Jai",
""
]
] | We obtain minimal (2+1) and (2+2) dimensional global flat embeddings of uncharged and charged dilatonic black holes in (1+1) dimensions, respectively. Moreover, we obtain the Hawking temperatures and the black hole ones of these dilatonic black holes. However, even though the minimal flat embedding structures are mathe... |
0907.2174 | Chris Clarkson | Sanjeev S. Seahra and Chris Clarkson | Gravitational waves in the black string braneworld | 16 pages, 8 figures | Class.Quant.Grav.26:245004,2009 | 10.1088/0264-9381/26/24/245004 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study gravitational waves in the black string Randall-Sundrum braneworld.
We present a reasonably self-contained and complete derivation of the equations
governing the evolution of gravitational perturbations in the presence of a
brane localized source, and then specialize to the case of spherical radiation
from a... | [
{
"created": "Mon, 13 Jul 2009 18:29:55 GMT",
"version": "v1"
}
] | 2009-11-19 | [
[
"Seahra",
"Sanjeev S.",
""
],
[
"Clarkson",
"Chris",
""
]
] | We study gravitational waves in the black string Randall-Sundrum braneworld. We present a reasonably self-contained and complete derivation of the equations governing the evolution of gravitational perturbations in the presence of a brane localized source, and then specialize to the case of spherical radiation from a p... |
1504.06583 | Jeff Steinhauer | Jeff Steinhauer | Measuring the entanglement of analogue Hawking radiation by the
density-density correlation function | The second version has a few additional explanatory sentences. The
third version has an improved introduction including additional citations | Phys. Rev. D 92, 024043 (2015) | 10.1103/PhysRevD.92.024043 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We theoretically study the entanglement of Hawking radiation pairs emitted by
an analogue black hole. We find that this entanglement can be measured by the
experimentally accessible density-density correlation function, vastly
simplifying the measurement. We find that while the Hawking radiation exiting
the black hol... | [
{
"created": "Fri, 24 Apr 2015 17:57:02 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Apr 2015 13:30:17 GMT",
"version": "v2"
},
{
"created": "Wed, 20 May 2015 14:03:29 GMT",
"version": "v3"
}
] | 2015-08-04 | [
[
"Steinhauer",
"Jeff",
""
]
] | We theoretically study the entanglement of Hawking radiation pairs emitted by an analogue black hole. We find that this entanglement can be measured by the experimentally accessible density-density correlation function, vastly simplifying the measurement. We find that while the Hawking radiation exiting the black hole ... |
gr-qc/0608094 | A. Latif Choudhury | A. M. Harunar Rashid, Arshad Momen, and A. L. Choudhury | Accelerating Universe Around A Blackhole | 9 pages | null | null | null | gr-qc | null | We have assumed that in a physical universe a blackhole is created some
where. We conjecture that this blackhole will then separate itself from the
physical universe and will build up an extra dimensional entity associated with
the physical universe. The extra dimensional entity we suppose to be orthogonal
to the phy... | [
{
"created": "Sun, 20 Aug 2006 02:48:51 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rashid",
"A. M. Harunar",
""
],
[
"Momen",
"Arshad",
""
],
[
"Choudhury",
"A. L.",
""
]
] | We have assumed that in a physical universe a blackhole is created some where. We conjecture that this blackhole will then separate itself from the physical universe and will build up an extra dimensional entity associated with the physical universe. The extra dimensional entity we suppose to be orthogonal to the physi... |
1706.07656 | Ali \"Ovg\"un Dr. | Ali \"Ovg\"un and Kimet Jusufi | Stability of Effective Thin-shell Wormholes Under Lorentz Symmetry
Breaking Supported by Dark Matter and Dark Energy | 13 pages, 9 figures, accepted for publication in Eur. Phys. J. Plus | Eur. Phys. J. Plus (2017) 132: 543 | 10.1140/epjp/i2017-11829-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we construct generic, spherically symmetric thin-shell
wormholes and check their stabilities using the unified dark sector, including
dark energy and dark matter. We give a master equation, from which one can
recover, as a special case, other stability solutions for generic spherically
symmetric thin-s... | [
{
"created": "Thu, 22 Jun 2017 15:46:20 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Dec 2017 13:42:17 GMT",
"version": "v2"
}
] | 2017-12-22 | [
[
"Övgün",
"Ali",
""
],
[
"Jusufi",
"Kimet",
""
]
] | In this paper, we construct generic, spherically symmetric thin-shell wormholes and check their stabilities using the unified dark sector, including dark energy and dark matter. We give a master equation, from which one can recover, as a special case, other stability solutions for generic spherically symmetric thin-she... |
1708.09736 | Roberto Casadio | Roberto Casadio, Andrea Giugno, Andrea Giusti | Corpuscular slow-roll inflation | 6 pages, 1 figure, minor typos corrected | Phys. Rev. D 97, 024041 (2018) | 10.1103/PhysRevD.97.024041 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that a corpuscular description of gravity can lead to an inflationary
scenario similar to Starobinsky's model without requiring the introduction of
the inflaton field. All relevant properties are determined by the number of
gravitons in the cosmological condensate or, equivalently, by their Compton
length. In... | [
{
"created": "Thu, 31 Aug 2017 14:21:48 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Jan 2018 08:38:29 GMT",
"version": "v2"
},
{
"created": "Mon, 29 Oct 2018 10:20:50 GMT",
"version": "v3"
}
] | 2018-10-30 | [
[
"Casadio",
"Roberto",
""
],
[
"Giugno",
"Andrea",
""
],
[
"Giusti",
"Andrea",
""
]
] | We show that a corpuscular description of gravity can lead to an inflationary scenario similar to Starobinsky's model without requiring the introduction of the inflaton field. All relevant properties are determined by the number of gravitons in the cosmological condensate or, equivalently, by their Compton length. In p... |
2110.07278 | Foad Parsaei | Foad Parsaei and Sara Rastgoo | Wormhole in f(R) gravity revisited | 9 pages, 7 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, exact wormhole solutions in the context of $f(R)$ theory of
gravity are investigated. Since the Einstein field equations are modified in
3+1 dimensions in the $f(R)$ theory of gravity, we have studied some possible
solutions with different forms of shape function and $f(R)$ function. We show
that choos... | [
{
"created": "Thu, 14 Oct 2021 11:30:27 GMT",
"version": "v1"
}
] | 2021-10-15 | [
[
"Parsaei",
"Foad",
""
],
[
"Rastgoo",
"Sara",
""
]
] | In this paper, exact wormhole solutions in the context of $f(R)$ theory of gravity are investigated. Since the Einstein field equations are modified in 3+1 dimensions in the $f(R)$ theory of gravity, we have studied some possible solutions with different forms of shape function and $f(R)$ function. We show that choosin... |
0904.0278 | Quentin G. Bailey | Quentin G. Bailey | Time-delay and Doppler tests of the Lorentz symmetry of gravity | 13 pages, 4 figures, references added, matches PRD version | Phys.Rev.D80:044004,2009 | 10.1103/PhysRevD.80.044004 | null | gr-qc astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modifications to the classic time-delay effect and Doppler shift in General
Relativity (GR) are studied in the context of the Lorentz-violating
Standard-Model Extension (SME). We derive the leading Lorentz-violating
corrections to the time-delay and Doppler shift signals, for a light ray
passing near a massive body. ... | [
{
"created": "Thu, 2 Apr 2009 00:14:31 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Aug 2009 20:43:36 GMT",
"version": "v2"
}
] | 2009-10-29 | [
[
"Bailey",
"Quentin G.",
""
]
] | Modifications to the classic time-delay effect and Doppler shift in General Relativity (GR) are studied in the context of the Lorentz-violating Standard-Model Extension (SME). We derive the leading Lorentz-violating corrections to the time-delay and Doppler shift signals, for a light ray passing near a massive body. It... |
1601.06528 | Salvatore Capozziello | A. Paliathanasis, L. Karpathopoulos, A. Wojnar, and S. Capozziello | Wheeler-DeWitt equation and Lie symmetries in Bianchi scalar-field
cosmology | 17 pages | null | 10.1140/epjc/s10052-016-4087-8 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lie symmetries are discussed for the Wheeler-De Witt equation in Bianchi
Class A cosmologies. In particular, we consider General Relativity, minimally
coupled scalar field gravity and Hybrid Gravity as paradigmatic examples of the
approach. Several invariant solutions are determined and classified according
to the fo... | [
{
"created": "Mon, 25 Jan 2016 09:42:00 GMT",
"version": "v1"
}
] | 2016-05-25 | [
[
"Paliathanasis",
"A.",
""
],
[
"Karpathopoulos",
"L.",
""
],
[
"Wojnar",
"A.",
""
],
[
"Capozziello",
"S.",
""
]
] | Lie symmetries are discussed for the Wheeler-De Witt equation in Bianchi Class A cosmologies. In particular, we consider General Relativity, minimally coupled scalar field gravity and Hybrid Gravity as paradigmatic examples of the approach. Several invariant solutions are determined and classified according to the form... |
1108.1826 | C\'edric Huwyler | C\'edric Huwyler, Antoine Klein, Philippe Jetzer | Testing General Relativity with LISA including Spin Precession and
Higher Harmonics in the Waveform | 33 pages, 37 figures | null | 10.1103/PhysRevD.86.084028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the accuracy at which a LISA-like space-based gravitational wave
detector will be able to observe deviations from General Relativity in the low
frequency approximation. To do so, we introduce six correction parameters that
account for modified gravity in the second post-Newtonian gravitational wave
phase f... | [
{
"created": "Mon, 8 Aug 2011 23:07:48 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Aug 2012 09:39:22 GMT",
"version": "v2"
}
] | 2015-05-30 | [
[
"Huwyler",
"Cédric",
""
],
[
"Klein",
"Antoine",
""
],
[
"Jetzer",
"Philippe",
""
]
] | We compute the accuracy at which a LISA-like space-based gravitational wave detector will be able to observe deviations from General Relativity in the low frequency approximation. To do so, we introduce six correction parameters that account for modified gravity in the second post-Newtonian gravitational wave phase for... |
1105.5843 | Nelson Christensen | N.L. Christensen (for the LIGO Scientific Collaboration and the Virgo
Collaboration) | Multimessenger Astronomy | For the proceedings for the 46th Rencontres de Moriond and GPhyS
Colloquium on Gravitational Waves and Experimental Gravity | null | null | LIGO Document Number P-1100053 | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Multimessenger astronomy incorporating gravitational radiation is a new and
exciting field that will potentially provide significant results and exciting
challenges in the near future. With advanced interferometric gravitational wave
detectors (LCGT, LIGO, Virgo) we will have the opportunity to investigate
sources of... | [
{
"created": "Mon, 30 May 2011 00:42:09 GMT",
"version": "v1"
}
] | 2019-08-13 | [
[
"Christensen",
"N. L.",
"",
"for the LIGO Scientific Collaboration and the Virgo\n Collaboration"
]
] | Multimessenger astronomy incorporating gravitational radiation is a new and exciting field that will potentially provide significant results and exciting challenges in the near future. With advanced interferometric gravitational wave detectors (LCGT, LIGO, Virgo) we will have the opportunity to investigate sources of g... |
1504.02499 | John Poirier | J. Poirier and G. J. Mathews | Role of the gravitomagnetic field in accelerating accretion disk matter
to polar jets | 7 pages, 4 figures, typos corrected | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the motion of the neutral masses in an accretion disk orbiting a
black hole creates a general-relativistic magnetic-like (gravitomagnetic) field
that vertically accelerates neutral particles near the accretion disk upward
and then inward toward the axis of the accretion disk. Even though this
gravitomagn... | [
{
"created": "Thu, 9 Apr 2015 21:11:39 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Apr 2015 19:54:37 GMT",
"version": "v2"
}
] | 2015-04-20 | [
[
"Poirier",
"J.",
""
],
[
"Mathews",
"G. J.",
""
]
] | We show that the motion of the neutral masses in an accretion disk orbiting a black hole creates a general-relativistic magnetic-like (gravitomagnetic) field that vertically accelerates neutral particles near the accretion disk upward and then inward toward the axis of the accretion disk. Even though this gravitomagnet... |
0805.3146 | Kenta Hioki | Kenta Hioki (Waseda Univ.), Umpei Miyamoto (Hebrew Univ.) | Hidden symmetries, null geodesics, and photon capture in the Sen black
hole | 19 pages, 6 figures, 1 table; v2: references added, typos corrected | Phys.Rev.D78:044007,2008 | 10.1103/PhysRevD.78.044007 | WU-AP/286/08 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Important classes of null geodesics and hidden symmetries in the Sen black
hole are investigated. First, we obtain the principal null geodesics and
circular photon orbits. Then, an irreducible rank-two Killing tensor and a
conformal Killing tensor are derived, which represent the hidden symmetries.
Analyzing the prop... | [
{
"created": "Tue, 20 May 2008 19:56:39 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Aug 2008 09:36:54 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Hioki",
"Kenta",
"",
"Waseda Univ."
],
[
"Miyamoto",
"Umpei",
"",
"Hebrew Univ."
]
] | Important classes of null geodesics and hidden symmetries in the Sen black hole are investigated. First, we obtain the principal null geodesics and circular photon orbits. Then, an irreducible rank-two Killing tensor and a conformal Killing tensor are derived, which represent the hidden symmetries. Analyzing the proper... |
0710.4131 | Ruxandra Bondarescu | Jayashree Balakrishna, Ruxandra Bondarescu, Gregory Daues, Mihai
Bondarescu | Numerical Simulations of Oscillating Soliton Stars: Excited States in
Spherical Symmetry and Ground State Evolutions in 3D | 12 pages, 11 figures, typos corrected, includes referee input,
references corrected, published version | Phys.Rev.D77:024028,2008 | 10.1103/PhysRevD.77.024028 | null | gr-qc | null | Excited state soliton stars are studied numerically for the first time. The
stability of spherically symmetric S-branch excited state oscillatons under
radial perturbations is investigated using a 1D code. We find that these stars
are inherently unstable either migrating to the ground state or collapsing to
black hol... | [
{
"created": "Mon, 22 Oct 2007 19:58:44 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Oct 2007 20:36:46 GMT",
"version": "v2"
},
{
"created": "Fri, 30 Nov 2007 17:02:10 GMT",
"version": "v3"
},
{
"created": "Wed, 5 Dec 2007 05:26:44 GMT",
"version": "v4"
},
{
"cr... | 2008-11-26 | [
[
"Balakrishna",
"Jayashree",
""
],
[
"Bondarescu",
"Ruxandra",
""
],
[
"Daues",
"Gregory",
""
],
[
"Bondarescu",
"Mihai",
""
]
] | Excited state soliton stars are studied numerically for the first time. The stability of spherically symmetric S-branch excited state oscillatons under radial perturbations is investigated using a 1D code. We find that these stars are inherently unstable either migrating to the ground state or collapsing to black holes... |
gr-qc/0503090 | Frans Klinkhamer | F.R. Klinkhamer, G.E. Volovik | Coexisting vacua and effective gravity | 10 pages with elsart.cls; v3: published version in Einstein issue of
PLA | Phys.Lett. A347 (2005) 8-13 | 10.1016/j.physleta.2005.05.056 | KA-TP-04-2005 | gr-qc cond-mat.stat-mech hep-ph | null | Our Universe may be a domain separated by physical phase boundaries from
other domain-Universes with different vacuum energy density and matter content.
The coexistence of different quantum vacua is perhaps regulated by the exchange
of global fermionic charges or by fermion zero modes on the phase boundary. An
exampl... | [
{
"created": "Mon, 21 Mar 2005 16:08:35 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Apr 2005 12:24:53 GMT",
"version": "v2"
},
{
"created": "Sat, 19 Nov 2005 10:56:49 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Klinkhamer",
"F. R.",
""
],
[
"Volovik",
"G. E.",
""
]
] | Our Universe may be a domain separated by physical phase boundaries from other domain-Universes with different vacuum energy density and matter content. The coexistence of different quantum vacua is perhaps regulated by the exchange of global fermionic charges or by fermion zero modes on the phase boundary. An example ... |
gr-qc/9611055 | Franz Embacher | Franz Embacher | Mode decomposition and unitarity in quantum cosmology, Talk given at the
Second Meeting on Constrained Dynamics and Quantum gravity, Santa Margherita
Ligure, September 17-21, 1996 | 5 pages, LaTeX (no figures) | Nucl.Phys.Proc.Suppl. 57 (1997) 291-294 | 10.1016/S0920-5632(97)00406-4 | UWThPh-1996-67 | gr-qc | null | Contrary to common belief, there are perspectives for generalizing the notion
of positive and negative frequency in minisuperspace quantum cosmology, even
when the wave equation does not admit symmetries. We outline a strategy in
doing so when the potential is positive. Also, an underlying unitarity
structure shows u... | [
{
"created": "Sat, 23 Nov 1996 01:46:12 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Embacher",
"Franz",
""
]
] | Contrary to common belief, there are perspectives for generalizing the notion of positive and negative frequency in minisuperspace quantum cosmology, even when the wave equation does not admit symmetries. We outline a strategy in doing so when the potential is positive. Also, an underlying unitarity structure shows up.... |
0909.0426 | Kentarou Tanabe | Kentaro Tanabe, Norihiro Tanahashi, Tetsuya Shiromizu | On asymptotic structure at null infinity in five dimensions | 12 pages. Published version in J.Math.Phys | J.Math.Phys.51:062502,2010 | 10.1063/1.3429580 | null | gr-qc hep-th | http://creativecommons.org/licenses/publicdomain/ | We discuss the asymptotic structure of null infinity in five dimensional
space-time. Since it is known that the conformal infinity is not useful for odd
higher dimensions, we shall employ the coordinate based method like the Bondi
coordinate firstly introduced in four dimensions. Then we define the null
infinity and ... | [
{
"created": "Wed, 2 Sep 2009 13:38:17 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jun 2010 05:46:08 GMT",
"version": "v2"
}
] | 2010-06-18 | [
[
"Tanabe",
"Kentaro",
""
],
[
"Tanahashi",
"Norihiro",
""
],
[
"Shiromizu",
"Tetsuya",
""
]
] | We discuss the asymptotic structure of null infinity in five dimensional space-time. Since it is known that the conformal infinity is not useful for odd higher dimensions, we shall employ the coordinate based method like the Bondi coordinate firstly introduced in four dimensions. Then we define the null infinity and id... |
1005.3226 | George Gillies | Alvin J. Sanders, George T. Gillies and Ernst Schmutzer | Implications upon theory discrimination of an accurate measurement of
the time rate of change of the gravitational parameter and other cosmological
parameters | 17 pages, 3 figures Version 2 is revised as per editorial/referee
comments | Annalen Phys.522:861-873,2010 | 10.1002/andp.201010460 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A substantial improvement in the accuracy of G-dot tests (The dot denotes the
time derivative.) would make it realistic to speak in terms of a measurement of
G-dot, rather than merely a smaller upper bound on |G-dot|. We show that the
accuracy delta|G-dot/G| \approx 10^-14 yr^-1 may be sufficient, given the
accuracy ... | [
{
"created": "Tue, 18 May 2010 15:15:53 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Jun 2010 18:39:07 GMT",
"version": "v2"
}
] | 2010-11-29 | [
[
"Sanders",
"Alvin J.",
""
],
[
"Gillies",
"George T.",
""
],
[
"Schmutzer",
"Ernst",
""
]
] | A substantial improvement in the accuracy of G-dot tests (The dot denotes the time derivative.) would make it realistic to speak in terms of a measurement of G-dot, rather than merely a smaller upper bound on |G-dot|. We show that the accuracy delta|G-dot/G| \approx 10^-14 yr^-1 may be sufficient, given the accuracy of... |
2406.13032 | Marcos Leopoldo Wayhs Basso | Marcos L. W. Basso and Vilson T. Zanchin | Compact regular objects from an electrified Tolman-like density: A new
interior region for the Kerr-Newman spacetime | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Charged static and rotating objects as solutions of the Einstein-Maxwell
field equations are obtained and studied in the present work. The full
spacetime geometry is obtained by matching two spacetime regions, an interior
region containing electrified matter and an exterior electrovacuum region. In
the static case, t... | [
{
"created": "Tue, 18 Jun 2024 19:52:53 GMT",
"version": "v1"
}
] | 2024-06-21 | [
[
"Basso",
"Marcos L. W.",
""
],
[
"Zanchin",
"Vilson T.",
""
]
] | Charged static and rotating objects as solutions of the Einstein-Maxwell field equations are obtained and studied in the present work. The full spacetime geometry is obtained by matching two spacetime regions, an interior region containing electrified matter and an exterior electrovacuum region. In the static case, the... |
1306.5694 | Elena Arbuzova V. | E.V. Arbuzova, A.D. Dolgov, L. Reverberi | Spherically Symmetric Solutions in F(R) Gravity and Gravitational
Repulsion | 6 pages. References are added | Astropart.Phys. 54 (2014) 44-47 | 10.1016/j.astropartphys.2013.11.008 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spherically symmetric solutions in F(R) theories in astronomical systems with
rising energy density are studied. The range of parameters is established for
which the flat space-time approximation for the background metric is valid. For
the solutions in which the curvature scalar oscillates with large amplitude and
hi... | [
{
"created": "Mon, 24 Jun 2013 18:02:32 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Jun 2013 11:59:22 GMT",
"version": "v2"
}
] | 2015-06-16 | [
[
"Arbuzova",
"E. V.",
""
],
[
"Dolgov",
"A. D.",
""
],
[
"Reverberi",
"L.",
""
]
] | Spherically symmetric solutions in F(R) theories in astronomical systems with rising energy density are studied. The range of parameters is established for which the flat space-time approximation for the background metric is valid. For the solutions in which the curvature scalar oscillates with large amplitude and high... |
1404.4266 | Olivier Minazzoli | Olivier Minazzoli and Aur\'elien Hees | Late-time cosmology of scalar-tensor theories with universal
multiplicative coupling between the scalar field and the matter Lagrangian | 17 pages - accepted Phys. Rev. D | Phys. Rev. D 90, 023017, 2014 | 10.1103/PhysRevD.90.023017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the late-time cosmological behaviour of scalar-tensor theories
with a universal multiplicative coupling between the scalar field and the
matter Lagrangian in the matter era. This class of theory encompasses the case
of the massless string dilaton (see Damour and Polyakov, General Relativity and
Gravita... | [
{
"created": "Wed, 16 Apr 2014 14:33:48 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Jul 2014 08:17:30 GMT",
"version": "v2"
}
] | 2014-07-24 | [
[
"Minazzoli",
"Olivier",
""
],
[
"Hees",
"Aurélien",
""
]
] | We investigate the late-time cosmological behaviour of scalar-tensor theories with a universal multiplicative coupling between the scalar field and the matter Lagrangian in the matter era. This class of theory encompasses the case of the massless string dilaton (see Damour and Polyakov, General Relativity and Gravitati... |
gr-qc/0105101 | Jonathan Oppenheim | Jonathan Oppenheim | Area scaling entropies for gravitating systems | 12 pages, revtex | Phys.Rev.D65:024020,2002 | 10.1103/PhysRevD.65.024020 | null | gr-qc astro-ph cond-mat.stat-mech hep-th | null | The entropy of a spherically symmetric distribution of matter in
self-equilibrium is calculated. When gravitational effects are neglected, the
entropy of the system is proportional to its volume. As effects due to
gravitational self-interactions become more important, the entropy acquires a
correction term and is no ... | [
{
"created": "Mon, 28 May 2001 00:57:09 GMT",
"version": "v1"
}
] | 2010-05-12 | [
[
"Oppenheim",
"Jonathan",
""
]
] | The entropy of a spherically symmetric distribution of matter in self-equilibrium is calculated. When gravitational effects are neglected, the entropy of the system is proportional to its volume. As effects due to gravitational self-interactions become more important, the entropy acquires a correction term and is no lo... |
gr-qc/0104082 | Abel Camacho Quintana | Abel Camacho (Astrophysikalisches Institut Potsdam) and Abel
Camacho-Galvan (UNAM) | Quantum nondemolition measurements of a particle in electric and
gravitational fields | Accepted in International Journal of Modern Physics D, 14 pages | Int.J.Mod.Phys. D10 (2001) 859-868 | 10.1142/S0218271801001281 | null | gr-qc quant-ph | null | In this work we obtain a nondemolition variable for the case in which a
charged particle moves in the electric and gravitational fields of a spherical
body. Afterwards we consider the continuous monitoring of this nondemolition
parameter, and calculate along the ideas of the so called restricted path
integral formali... | [
{
"created": "Wed, 25 Apr 2001 17:41:40 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Camacho",
"Abel",
"",
"Astrophysikalisches Institut Potsdam"
],
[
"Camacho-Galvan",
"Abel",
"",
"UNAM"
]
] | In this work we obtain a nondemolition variable for the case in which a charged particle moves in the electric and gravitational fields of a spherical body. Afterwards we consider the continuous monitoring of this nondemolition parameter, and calculate along the ideas of the so called restricted path integral formalism... |
1103.2089 | Alex Nielsen | Valerio Faraoni and Alex B. Nielsen | The horizon-entropy increase law for causal and quasi-local horizons and
conformal field redefinitions | 23 pages | null | 10.1088/0264-9381/28/17/175008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explicitly prove the horizon-entropy increase law for both causal and
quasi-locally defined horizons in scalar-tensor and $f(R)$ gravity theories.
Contrary to causal event horizons, future outer trapping horizons are not
conformally invariant and we provide a modification of trapping horizons to
complete the proof... | [
{
"created": "Thu, 10 Mar 2011 17:46:19 GMT",
"version": "v1"
}
] | 2015-05-27 | [
[
"Faraoni",
"Valerio",
""
],
[
"Nielsen",
"Alex B.",
""
]
] | We explicitly prove the horizon-entropy increase law for both causal and quasi-locally defined horizons in scalar-tensor and $f(R)$ gravity theories. Contrary to causal event horizons, future outer trapping horizons are not conformally invariant and we provide a modification of trapping horizons to complete the proof, ... |
1503.02162 | Anton Galajinsky | Marco Cariglia and Anton Galajinsky | Ricci-flat spacetimes admitting higher rank Killing tensors | 12 pages | null | 10.1016/j.physletb.2015.04.001 | null | gr-qc hep-th math-ph math.MP nlin.SI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Ricci-flat spacetimes of signature (2,q) with q=2,3,4 are constructed which
admit irreducible Killing tensors of rank-3 or rank-4. The construction relies
upon the Eisenhart lift applied to Drach's two-dimensional integrable systems
which is followed by the oxidation with respect to free parameters. In four
dimension... | [
{
"created": "Sat, 7 Mar 2015 11:46:59 GMT",
"version": "v1"
}
] | 2015-05-20 | [
[
"Cariglia",
"Marco",
""
],
[
"Galajinsky",
"Anton",
""
]
] | Ricci-flat spacetimes of signature (2,q) with q=2,3,4 are constructed which admit irreducible Killing tensors of rank-3 or rank-4. The construction relies upon the Eisenhart lift applied to Drach's two-dimensional integrable systems which is followed by the oxidation with respect to free parameters. In four dimensions,... |
gr-qc/9812040 | Ken D. Olum | Ken D. Olum and J. J. Blanco-Pillado | Field theory simulation of Abelian-Higgs cosmic string cusps | 9 pages, RevTeX, 13 figures with epsf | Phys.Rev. D60 (1999) 023503 | 10.1103/PhysRevD.60.023503 | null | gr-qc astro-ph hep-ph | null | We have performed a lattice field theory simulation of cusps in Abelian-Higgs
cosmic strings. The results are in accord with the theory that the portion of
the strings which overlaps near the cusp is released as radiation. The radius
of the string cores which must touch to produce the evaporation is
approximately $r ... | [
{
"created": "Fri, 11 Dec 1998 22:46:28 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Olum",
"Ken D.",
""
],
[
"Blanco-Pillado",
"J. J.",
""
]
] | We have performed a lattice field theory simulation of cusps in Abelian-Higgs cosmic strings. The results are in accord with the theory that the portion of the strings which overlaps near the cusp is released as radiation. The radius of the string cores which must touch to produce the evaporation is approximately $r = ... |
2304.03067 | Celia Escamilla-Rivera | Geovanny A. Rave-Franco, Celia Escamilla-Rivera and Jackson Levi Said | Production of Primordial Gravitational Waves in Teleparallel Gravity | 21 pages. Version accepted in Physics of the Dark Universe | Physics of the Dark Universe 2023 | 10.1016/j.dark.2023.101316 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study the production of primordial gravitational waves in the context of
extended teleparallel gravity models and compare them with those of general
relativity. Teleparallel gravity has been widely studied in the context of the
late universe but not much in the early universe. Two sources of primordial
gravitation... | [
{
"created": "Thu, 6 Apr 2023 13:32:19 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Aug 2023 20:35:16 GMT",
"version": "v2"
}
] | 2023-08-29 | [
[
"Rave-Franco",
"Geovanny A.",
""
],
[
"Escamilla-Rivera",
"Celia",
""
],
[
"Said",
"Jackson Levi",
""
]
] | We study the production of primordial gravitational waves in the context of extended teleparallel gravity models and compare them with those of general relativity. Teleparallel gravity has been widely studied in the context of the late universe but not much in the early universe. Two sources of primordial gravitational... |
2308.10605 | Anshuman Baruah | Parangam Goswami, Anshuman Baruah, Atri Deshamukhya | Traversable wormholes in $f(R)$ gravity sourced by a cloud of strings | null | East European Journal of Physics 1. 112-126 (2024) | 10.26565/2312-4334-2024-1-09 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Wormhole solutions in General Relativity (GR) require \textit{exotic} matter
sources that violate the null energy condition (NEC), and it is well known that
higher-order modifications of GR and some alternative matter sources can
support wormholes. In this study, we explore the possibility of formulating
traversable ... | [
{
"created": "Mon, 21 Aug 2023 10:02:31 GMT",
"version": "v1"
}
] | 2024-03-06 | [
[
"Goswami",
"Parangam",
""
],
[
"Baruah",
"Anshuman",
""
],
[
"Deshamukhya",
"Atri",
""
]
] | Wormhole solutions in General Relativity (GR) require \textit{exotic} matter sources that violate the null energy condition (NEC), and it is well known that higher-order modifications of GR and some alternative matter sources can support wormholes. In this study, we explore the possibility of formulating traversable wo... |
1810.02178 | Vojtech Pravda | Martin Kuchynka, Tom\'a\v{s} M\'alek, Vojt\v{e}ch Pravda, Alena
Pravdov\'a | Almost universal spacetimes in higher-order gravity theories | 17 pages, final version, to appear in Phys. Rev. D | Phys. Rev. D 99, 024043 (2019) | 10.1103/PhysRevD.99.024043 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study almost universal spacetimes - spacetimes for which the field
equations of any generalized gravity with the Lagrangian constructed from the
metric, the Riemann tensor and its covariant derivatives of arbitrary order
reduce to one single differential equation and one algebraic condition for the
Ricci scalar. W... | [
{
"created": "Thu, 4 Oct 2018 12:51:55 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jan 2019 11:13:37 GMT",
"version": "v2"
}
] | 2019-02-05 | [
[
"Kuchynka",
"Martin",
""
],
[
"Málek",
"Tomáš",
""
],
[
"Pravda",
"Vojtěch",
""
],
[
"Pravdová",
"Alena",
""
]
] | We study almost universal spacetimes - spacetimes for which the field equations of any generalized gravity with the Lagrangian constructed from the metric, the Riemann tensor and its covariant derivatives of arbitrary order reduce to one single differential equation and one algebraic condition for the Ricci scalar. We ... |
1310.4795 | Brajesh Gupt | Peter Diener, Brajesh Gupt, Parampreet Singh | Chimera: A hybrid approach to numerical loop quantum cosmology | Minor revision to match published version. To appear in CQG | Class.Quant.Grav. 31 (2014) 025013 | 10.1088/0264-9381/31/2/025013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of a quantum bounce in isotropic spacetimes is a key result in
loop quantum cosmology (LQC), which has been demonstrated to arise in all the
models studied so far. In most of the models, the bounce has been studied using
numerical simulations involving states which are sharply peaked and which
bounce at... | [
{
"created": "Thu, 17 Oct 2013 18:46:20 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Nov 2013 18:51:40 GMT",
"version": "v2"
}
] | 2017-06-20 | [
[
"Diener",
"Peter",
""
],
[
"Gupt",
"Brajesh",
""
],
[
"Singh",
"Parampreet",
""
]
] | The existence of a quantum bounce in isotropic spacetimes is a key result in loop quantum cosmology (LQC), which has been demonstrated to arise in all the models studied so far. In most of the models, the bounce has been studied using numerical simulations involving states which are sharply peaked and which bounce at v... |
1906.06644 | Hamed Pejhan | Hamed Pejhan, Mohammad Enayati, Jean-Pierre Gazeau, and Anzhong Wang | Gupta-Bleuler quantization for linearized gravity in de Sitter spacetime | 19 pages, no figure, version accepted for publication in Physical
Review D | Phys. Rev. D 100, 066012 (2019) | 10.1103/PhysRevD.100.066012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent Letter, we have pointed out that the linearized Einstein gravity
in de Sitter (dS) spacetime besides the spacetime symmetries generated by the
Killing vectors and the evident gauge symmetry also possesses a hitherto
`hidden' local (gauge-like) symmetry which becomes anomalous on the quantum
level. This ga... | [
{
"created": "Sun, 16 Jun 2019 04:00:39 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Aug 2019 01:29:19 GMT",
"version": "v2"
}
] | 2019-09-12 | [
[
"Pejhan",
"Hamed",
""
],
[
"Enayati",
"Mohammad",
""
],
[
"Gazeau",
"Jean-Pierre",
""
],
[
"Wang",
"Anzhong",
""
]
] | In a recent Letter, we have pointed out that the linearized Einstein gravity in de Sitter (dS) spacetime besides the spacetime symmetries generated by the Killing vectors and the evident gauge symmetry also possesses a hitherto `hidden' local (gauge-like) symmetry which becomes anomalous on the quantum level. This gaug... |
1306.4487 | Miquel Nofrarias | M Nofrarias, F Antonucci, M Armano, H Audley, G Auger, M Benedetti, P
Binetruy, J Bogenstahl, D Bortoluzzi, N Brandt, M Caleno, A Cavalleri, G
Congedo, M Cruise, K Danzmann, F De Marchi, M Diaz-Aguilo, I Diepholz, G
Dixon, R Dolesi, N Dunbar, J Fauste, L Ferraioli, V Ferroni W Fichter, E
Fitzsimons, M Freschi, ... | State space modelling and data analysis exercises in LISA Pathfinder | Plenary talk presented at the 9th International LISA Symposium, 21-25
May 2012, Paris | 2013ASPC..467..161N | null | null | gr-qc astro-ph.IM physics.data-an physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | LISA Pathfinder is a mission planned by the European Space Agency to test the
key technologies that will allow the detection of gravitational waves in space.
The instrument on-board, the LISA Technology package, will undergo an
exhaustive campaign of calibrations and noise characterisation campaigns in
order to fully... | [
{
"created": "Wed, 19 Jun 2013 10:56:24 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Jun 2013 10:02:32 GMT",
"version": "v2"
}
] | 2013-06-24 | [
[
"Nofrarias",
"M",
""
],
[
"Antonucci",
"F",
""
],
[
"Armano",
"M",
""
],
[
"Audley",
"H",
""
],
[
"Auger",
"G",
""
],
[
"Benedetti",
"M",
""
],
[
"Binetruy",
"P",
""
],
[
"Bogenstahl",
"J",
... | LISA Pathfinder is a mission planned by the European Space Agency to test the key technologies that will allow the detection of gravitational waves in space. The instrument on-board, the LISA Technology package, will undergo an exhaustive campaign of calibrations and noise characterisation campaigns in order to fully d... |
1606.00147 | Kazuharu Bamba | Z. Yousaf, Kazuharu Bamba and M. Zaeem ul Haq Bhatti | Causes of Irregular Energy Density in $f(R,T)$ Gravity | 25 pages, no figure, version accepted for publication in Physical
Review D | Phys. Rev. D 93, 124048 (2016) | 10.1103/PhysRevD.93.124048 | FU-PCG-12 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate irregularity factors for a self-gravitating spherical star
evolving in the presence of imperfect fluid. We explore the gravitational field
equations and the dynamical equations with the systematic construction in
$f(R,T)$ gravity, where $T$ is the trace of the energy-momentum tensor.
Furthermore, we an... | [
{
"created": "Wed, 1 Jun 2016 07:37:05 GMT",
"version": "v1"
}
] | 2016-06-29 | [
[
"Yousaf",
"Z.",
""
],
[
"Bamba",
"Kazuharu",
""
],
[
"Bhatti",
"M. Zaeem ul Haq",
""
]
] | We investigate irregularity factors for a self-gravitating spherical star evolving in the presence of imperfect fluid. We explore the gravitational field equations and the dynamical equations with the systematic construction in $f(R,T)$ gravity, where $T$ is the trace of the energy-momentum tensor. Furthermore, we anal... |
1411.7850 | T\'erence Delsate | Terence Delsate and Robert Mann | Van Der Waals Black Holes in $d$ dimensions | 14 p., 4 figures | null | 10.1007/JHEP02(2015)070 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize the recent solution proposed by Rajagopal et al. to arbitrary
number of dimensions and horizon topologies. We comment on the regime of
validity of these solution. Among our main results, we argue that the Van Der
Waals (VDW) black hole (BH) metric is to be interpreted as a near horizon
metric. This is s... | [
{
"created": "Fri, 28 Nov 2014 13:12:46 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Delsate",
"Terence",
""
],
[
"Mann",
"Robert",
""
]
] | We generalize the recent solution proposed by Rajagopal et al. to arbitrary number of dimensions and horizon topologies. We comment on the regime of validity of these solution. Among our main results, we argue that the Van Der Waals (VDW) black hole (BH) metric is to be interpreted as a near horizon metric. This is sup... |
1802.00687 | Nicola Rendell | Nicola Rendell | Large-distance behaviour of the massless vector two-point function in de
Sitter spacetime | 14 pages, no figures, to appear in a Special Issue of the IJMPD on
Selected Papers of the III Amazonian Symposium on Physics | null | 10.1142/S0218271818430058 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the long-distance behaviour of the massless vector propagator in
(n)-dimensional de Sitter spacetime, where $n \geq 4$. Specifically, we
consider the massless limit of the vector propagator in the Stueckelberg
theory, which is an extension of Proca theory, with an additional gauge-fixing
term. We work to lea... | [
{
"created": "Fri, 2 Feb 2018 14:07:04 GMT",
"version": "v1"
},
{
"created": "Thu, 3 May 2018 11:18:05 GMT",
"version": "v2"
}
] | 2018-05-04 | [
[
"Rendell",
"Nicola",
""
]
] | We study the long-distance behaviour of the massless vector propagator in (n)-dimensional de Sitter spacetime, where $n \geq 4$. Specifically, we consider the massless limit of the vector propagator in the Stueckelberg theory, which is an extension of Proca theory, with an additional gauge-fixing term. We work to leadi... |
2304.09777 | Grigoris Panotopoulos | L. Balart, S. Belmar-Herrera, G. Panotopoulos, \'A. Rinc\'on | Novel charged black hole solutions of Born-Infeld type: General
properties, Smarr formula and Quasinormal frequencies | 18 pages, 7 figures, 3 tables, to be published in Annals of Physics | null | 10.1016/j.aop.2023.169329 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate two novel models of charged black holes in the framework of
non-linear electrodynamics of Born-Infeld type. In particular, starting from
two concrete Lagrangian densities, the corresponding metric potentials, the
electric field, the Smarr formula and finally, the (scalar) quasinormal modes
are computed... | [
{
"created": "Wed, 19 Apr 2023 16:00:35 GMT",
"version": "v1"
}
] | 2023-05-31 | [
[
"Balart",
"L.",
""
],
[
"Belmar-Herrera",
"S.",
""
],
[
"Panotopoulos",
"G.",
""
],
[
"Rincón",
"Á.",
""
]
] | We investigate two novel models of charged black holes in the framework of non-linear electrodynamics of Born-Infeld type. In particular, starting from two concrete Lagrangian densities, the corresponding metric potentials, the electric field, the Smarr formula and finally, the (scalar) quasinormal modes are computed f... |
0810.5119 | Martin Bojowald | Martin Bojowald and Juan D. Reyes | Dilaton Gravity, Poisson Sigma Models and Loop Quantum Gravity | 31 pages | Class.Quant.Grav.26:035018,2009 | 10.1088/0264-9381/26/3/035018 | IGC-08/10-2 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spherically symmetric gravity in Ashtekar variables coupled to Yang-Mills
theory in two dimensions and its relation to dilaton gravity and Poisson sigma
models are discussed. After introducing its loop quantization, quantum
corrections for inverse triad components are shown to provide a consistent
deformation without... | [
{
"created": "Tue, 28 Oct 2008 19:46:20 GMT",
"version": "v1"
}
] | 2009-02-06 | [
[
"Bojowald",
"Martin",
""
],
[
"Reyes",
"Juan D.",
""
]
] | Spherically symmetric gravity in Ashtekar variables coupled to Yang-Mills theory in two dimensions and its relation to dilaton gravity and Poisson sigma models are discussed. After introducing its loop quantization, quantum corrections for inverse triad components are shown to provide a consistent deformation without a... |
2203.12002 | Barun Kumar Pal | Barun Kumar Pal | An Inflationary Equation of State | null | IJMPD, 2023 | 10.1142/S0218271823500190 | Volume No. 32, Issue No. 04, Article No. 2350019, Year 2023 | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have studied inflationary paradigm through an inflationary equation of
state. With a single parameter equation of state as a function of the scalar
field responsible for accelerated expansion, we find an observationally viable
model satisfying all the constraints as laid down by the recent observations.
The result... | [
{
"created": "Tue, 22 Mar 2022 19:11:48 GMT",
"version": "v1"
}
] | 2023-05-10 | [
[
"Pal",
"Barun Kumar",
""
]
] | We have studied inflationary paradigm through an inflationary equation of state. With a single parameter equation of state as a function of the scalar field responsible for accelerated expansion, we find an observationally viable model satisfying all the constraints as laid down by the recent observations. The resultin... |
gr-qc/0306080 | Claudio Benedito Silva Furtado | A. M. de M. Carvalho, Fernando Moraes, Claudio Furtado | Loop variables in the geometry of a rotating black string | 14 pages, iopart style | Class.Quant.Grav. 20 (2003) 2063-2074 | 10.1088/0264-9381/20/11/308 | null | gr-qc | null | In this paper we analyze in the Wilson loop context the parallel transport of
vectors and spinors around a closed loop in the background space-time of a
rotating black string in order to classify its global properties. We also
examine particular closed orbits in this space-time and verify the Mandelstam
relations.
| [
{
"created": "Tue, 17 Jun 2003 20:04:48 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Carvalho",
"A. M. de M.",
""
],
[
"Moraes",
"Fernando",
""
],
[
"Furtado",
"Claudio",
""
]
] | In this paper we analyze in the Wilson loop context the parallel transport of vectors and spinors around a closed loop in the background space-time of a rotating black string in order to classify its global properties. We also examine particular closed orbits in this space-time and verify the Mandelstam relations. |
gr-qc/0609070 | Shabbir Ghulam | Ghulam Shabbir, Shaukat Iqbal | Proper Conformal Vector fields in Bianchi Type I Space-Times | 5 pages | null | null | null | gr-qc | null | Direct integration technique is used to study the proper conformal vector
fields in non conformally flat Bianchi type-1 space-times. Using the above
mentioned technique we have shown that a very special class of the above
space-time admits proper conformal vector fields.
| [
{
"created": "Tue, 19 Sep 2006 04:08:13 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Shabbir",
"Ghulam",
""
],
[
"Iqbal",
"Shaukat",
""
]
] | Direct integration technique is used to study the proper conformal vector fields in non conformally flat Bianchi type-1 space-times. Using the above mentioned technique we have shown that a very special class of the above space-time admits proper conformal vector fields. |
1103.3553 | Hossein Farajollahi | H. Farajollahi and F. Milani | Stability analysis in Modified Non-Local Gravity | 12 pages, 4 figures, will be published in Int. J. Theor. Phys | Int. J. Theor. Phys. 50, 6, 1953-1961, 2011 | 10.1007/s10773-011-0710-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider FRW cosmology in modified non-local gravity. The
stability analysis shows that there is only one stable critical point for the
model and the universe undergoes a quintessence dominated era.
| [
{
"created": "Fri, 18 Mar 2011 04:54:50 GMT",
"version": "v1"
}
] | 2011-06-09 | [
[
"Farajollahi",
"H.",
""
],
[
"Milani",
"F.",
""
]
] | In this paper we consider FRW cosmology in modified non-local gravity. The stability analysis shows that there is only one stable critical point for the model and the universe undergoes a quintessence dominated era. |
gr-qc/0703095 | Jorge Ovalle | J Ovalle | Searching Exact Solutions for Compact Stars in Braneworld: a conjecture | 24 pages; a new section with a regular solution; to appear in Modern
Phys. Lett. A | Mod.Phys.Lett.A23:3247-3263,2008 | 10.1142/S0217732308027011 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of the braneworld, a method to find consistent solutions to
Einstein's field equations in the interior of a spherically symmetric, static
and non uniform stellar distribution with Weyl stresses is developed. This
method, based in the fact that any braneworld stellar solution must have the
general relat... | [
{
"created": "Mon, 19 Mar 2007 14:23:08 GMT",
"version": "v1"
},
{
"created": "Wed, 2 May 2007 18:32:26 GMT",
"version": "v2"
},
{
"created": "Tue, 8 Jul 2008 22:11:45 GMT",
"version": "v3"
}
] | 2009-02-11 | [
[
"Ovalle",
"J",
""
]
] | In the context of the braneworld, a method to find consistent solutions to Einstein's field equations in the interior of a spherically symmetric, static and non uniform stellar distribution with Weyl stresses is developed. This method, based in the fact that any braneworld stellar solution must have the general relativ... |
gr-qc/9809089 | Samuel Rocha Oliveira | Patricio S. Letelier and Samuel R. Oliveira | On Accelerated Black Holes | Substantial revision after referee's comments. 21 pages, 3 figures, 2
tables. (amsmath and graphicx packages). Accepted to Phys. Rev. D | Phys.Rev. D64 (2001) 064005 | 10.1103/PhysRevD.64.064005 | null | gr-qc | null | The static and stationary C-metric are revisited in a generic framework and
their interpretations studied in some detail. Specially those with two event
horizons, one for the black hole and another for the acceleration. We found
that: i) The spacetime of an accelerated static black hole is plagued by either
conical s... | [
{
"created": "Wed, 30 Sep 1998 21:02:19 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Jul 1999 22:51:22 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Jun 2001 19:01:41 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Letelier",
"Patricio S.",
""
],
[
"Oliveira",
"Samuel R.",
""
]
] | The static and stationary C-metric are revisited in a generic framework and their interpretations studied in some detail. Specially those with two event horizons, one for the black hole and another for the acceleration. We found that: i) The spacetime of an accelerated static black hole is plagued by either conical sin... |
1507.04810 | Stanley P. Gudder | Stanley Gudder | Curvature and Quantum Mechanics on Covariant Causal Sets | 19 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article begins by reviewing the causal set approach in discrete quantum
gravity. In our version of this approach a special role is played by covariant
causal sets which we call $c$-causets. The importance of $c$-causets is that
they support the concepts of a natural distance function, geodesics and
curvature in ... | [
{
"created": "Fri, 17 Jul 2015 00:59:46 GMT",
"version": "v1"
}
] | 2015-07-20 | [
[
"Gudder",
"Stanley",
""
]
] | This article begins by reviewing the causal set approach in discrete quantum gravity. In our version of this approach a special role is played by covariant causal sets which we call $c$-causets. The importance of $c$-causets is that they support the concepts of a natural distance function, geodesics and curvature in a ... |
1810.06541 | Krzysztof Andrzejewski | K. Andrzejewski, S. Prencel | Niederer's transformation, time-dependent oscillators and polarized
gravitational waves | 26 pages, Substantially revised according to the suggestions of the
referees (the role of the integrals of motion, associated with the conformal
generators, is clarified by means of Ermakov-Lewis invariants). Accepted for
publication in CQG | null | 10.1088/1361-6382/ab2394 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is noted that the Niederer transformation can be used to find the explicit
relation between time-dependent linear oscillators, including the most
interesting case when one of them is harmonic. A geometric interpretation of
this correspondence is provided by certain subclasses of pp-waves; in
particular the ones st... | [
{
"created": "Mon, 15 Oct 2018 17:44:30 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Oct 2018 07:56:45 GMT",
"version": "v2"
},
{
"created": "Thu, 23 May 2019 17:29:58 GMT",
"version": "v3"
}
] | 2019-09-04 | [
[
"Andrzejewski",
"K.",
""
],
[
"Prencel",
"S.",
""
]
] | It is noted that the Niederer transformation can be used to find the explicit relation between time-dependent linear oscillators, including the most interesting case when one of them is harmonic. A geometric interpretation of this correspondence is provided by certain subclasses of pp-waves; in particular the ones stri... |
2212.04885 | Bal\'azs Kacskovics | Bal\'azs Kacskovics and D\'aniel Barta and M\'aty\'as Zsolt Vas\'uth | Rapidly rotating neutron stars with realistic nuclear matter equation of
state | 7 pages, 4 figures, conference proceeding | null | 10.1002/asna.20220109 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We performed a comparison of three different numerical codes for constructing
equilibrium models; (I) a code for static equilibrium configurations, (II) an
implementation of the Hartle--Thorne slow-rotation approximation, (III) a
numerical solution of the full Einstein equations by \texttt{LORENE}. We aimed
to constr... | [
{
"created": "Fri, 9 Dec 2022 14:39:19 GMT",
"version": "v1"
}
] | 2023-04-05 | [
[
"Kacskovics",
"Balázs",
""
],
[
"Barta",
"Dániel",
""
],
[
"Vasúth",
"Mátyás Zsolt",
""
]
] | We performed a comparison of three different numerical codes for constructing equilibrium models; (I) a code for static equilibrium configurations, (II) an implementation of the Hartle--Thorne slow-rotation approximation, (III) a numerical solution of the full Einstein equations by \texttt{LORENE}. We aimed to construc... |
1608.05025 | Afshin Montakhab | Hamid Reza Salahi, Ahmad Sheykhi, and Afshin Montakhab | Effects of Backreaction on Power-Maxwell Holographic Superconductors in
Gauss-Bonnet Gravity | 19 pages, 1 figure | Eur. Phys. J. C 76 (2016) 575 | 10.1140/epjc/s10052-016-4441-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically and numerically investigate the properties of s-wave
holographic superconductors by considering the effects of scalar and gauge
fields on the background geometry in five dimensional Einstein-Gauss-Bonnet
gravity. We assume the gauge field to be in the form of the Power-Maxwell
nonlinear electrodynamic... | [
{
"created": "Wed, 17 Aug 2016 17:25:37 GMT",
"version": "v1"
}
] | 2017-03-21 | [
[
"Salahi",
"Hamid Reza",
""
],
[
"Sheykhi",
"Ahmad",
""
],
[
"Montakhab",
"Afshin",
""
]
] | We analytically and numerically investigate the properties of s-wave holographic superconductors by considering the effects of scalar and gauge fields on the background geometry in five dimensional Einstein-Gauss-Bonnet gravity. We assume the gauge field to be in the form of the Power-Maxwell nonlinear electrodynamics.... |
1211.0128 | Himanshu Kumar | Himanshu kumar, Sharf Alam, Suhail Ahmad (Jamia Millia Isamia, New
Delhi) | Surface tension with Normal Curvature in Curved Space-Time | 9 pages, RevTex, 1 figure (accepted in Gen. Relativ. Gravit.) | Gen. Relativ. Gravit. (2013) 45:125-142 | 10.1007/s10714-012-1464-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With an aim to include the contribution of surface tension in the action of
the boundary, we define the tangential pressure in terms of surface tension and
Normal curvature in a more naturally geometric way. First, we show that the
negative tangential pressure is independent of the four-velocity of a very thin
hyper-... | [
{
"created": "Thu, 1 Nov 2012 09:01:24 GMT",
"version": "v1"
}
] | 2013-01-21 | [
[
"kumar",
"Himanshu",
"",
"Jamia Millia Isamia, New\n Delhi"
],
[
"Alam",
"Sharf",
"",
"Jamia Millia Isamia, New\n Delhi"
],
[
"Ahmad",
"Suhail",
"",
"Jamia Millia Isamia, New\n Delhi"
]
] | With an aim to include the contribution of surface tension in the action of the boundary, we define the tangential pressure in terms of surface tension and Normal curvature in a more naturally geometric way. First, we show that the negative tangential pressure is independent of the four-velocity of a very thin hyper-su... |
gr-qc/0703023 | Davide Batic | D. Batic and H. Schmid | The Dirac propagator in the extreme Kerr metric | 9 pages, one more reference added | J.Phys.A40:13443-13452,2007 | 10.1088/1751-8113/40/44/021 | null | gr-qc | null | Starting with the Dirac equation in the extreme Kerr metric we derive an
integral representation for the propagator of solutions of the Cauchy problem
with initial data in the class of smooth compactly supported functions.
| [
{
"created": "Mon, 5 Mar 2007 08:19:02 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Mar 2007 13:24:24 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Batic",
"D.",
""
],
[
"Schmid",
"H.",
""
]
] | Starting with the Dirac equation in the extreme Kerr metric we derive an integral representation for the propagator of solutions of the Cauchy problem with initial data in the class of smooth compactly supported functions. |
gr-qc/9806065 | Dominic Clancy | Dominic Clancy, James E. Lidsey and Reza Tavakol | Initial Conditions in String Cosmology | 10 pages standard Latex format, no figures. Submitted to Phys. Rev. D | Phys.Rev. D59 (1999) 063511 | 10.1103/PhysRevD.59.063511 | null | gr-qc | null | We take a critical look at a recent conjecture concerning the past attractor
in the pre-big-bang scenario. We argue that the Milne universe is unlikely to
be a general past attractor for such models and support this with a number of
examples.
| [
{
"created": "Mon, 15 Jun 1998 19:56:44 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Clancy",
"Dominic",
""
],
[
"Lidsey",
"James E.",
""
],
[
"Tavakol",
"Reza",
""
]
] | We take a critical look at a recent conjecture concerning the past attractor in the pre-big-bang scenario. We argue that the Milne universe is unlikely to be a general past attractor for such models and support this with a number of examples. |
gr-qc/9910028 | Pantelis S. Apostolopoulos | Michael Tsamparlis and Pantelis S. Apostolopoulos | Comment on Ricci Collineations for type B warped space-times | LaTex, 3 pages, Eq. (9) and reference added, typos corrected; Gen.
Rel. Grav (to appear) | Gen.Rel.Grav. 32 (2000) 281 | 10.1023/A:1001931409928 | null | gr-qc | null | We present two counterexamples to the paper by Carot et al. in Gen. Rel.
Grav. 1997, 29, 1223 and show that the results obtained are correct but not
general.
| [
{
"created": "Fri, 8 Oct 1999 05:51:25 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Feb 2000 12:46:36 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Tsamparlis",
"Michael",
""
],
[
"Apostolopoulos",
"Pantelis S.",
""
]
] | We present two counterexamples to the paper by Carot et al. in Gen. Rel. Grav. 1997, 29, 1223 and show that the results obtained are correct but not general. |
1610.04452 | Robert Beig | Robert Beig, Bernd G. Schmidt | Celestial mechanics of elastic bodies II | 17 pages, second author has chosen to withdraw, small corrections,
version identical to the published one | Class. Quantum Grav. 34 (2017) 085001 | 10.1088/1361-6382/aa6350 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct time independent configurations describing a small elastic body
moving in a circular orbit in the Schwarzschild spacetime. These configurations
are relativistic versions of Newtonian solutions constructed previously by us.
In the process we simplify and sharpen previous results of ours concerning
elastic... | [
{
"created": "Fri, 14 Oct 2016 13:28:01 GMT",
"version": "v1"
},
{
"created": "Sat, 25 Mar 2017 17:40:57 GMT",
"version": "v2"
}
] | 2017-03-28 | [
[
"Beig",
"Robert",
""
],
[
"Schmidt",
"Bernd G.",
""
]
] | We construct time independent configurations describing a small elastic body moving in a circular orbit in the Schwarzschild spacetime. These configurations are relativistic versions of Newtonian solutions constructed previously by us. In the process we simplify and sharpen previous results of ours concerning elastic b... |
0803.3327 | \"Ozg\"ur Acik | O. Acik, U. Ertem, M. Onder and A. Vercin | Killing-Yano Forms of a Class of Spherically Symmetric Space-Times I: A
Unified Generation of Killing Vector Fields | 27 pages | null | null | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/3.0/ | Killing-Yano one forms (duals of Killing vector fields) of a class of
spherically symmetric space-times characterized by four functions are derived
in a unified and exhaustive way. For well-known space-times such as those of
Minkowski, Schwarzschild, Reissner-Nordstrom, Robertson-Walker and several
forms of de Sitter... | [
{
"created": "Sun, 23 Mar 2008 15:48:28 GMT",
"version": "v1"
}
] | 2008-03-27 | [
[
"Acik",
"O.",
""
],
[
"Ertem",
"U.",
""
],
[
"Onder",
"M.",
""
],
[
"Vercin",
"A.",
""
]
] | Killing-Yano one forms (duals of Killing vector fields) of a class of spherically symmetric space-times characterized by four functions are derived in a unified and exhaustive way. For well-known space-times such as those of Minkowski, Schwarzschild, Reissner-Nordstrom, Robertson-Walker and several forms of de Sitter, ... |
2306.07628 | Antonio Ferreiro | Antonio Ferreiro, Jose Navarro-Salas and Silvia Pla | Comment on "Gravitational Pair Production and Black Hole Evaporation" | null | null | null | null | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We scrutinize the recent Letter "Gravitational pair production and black hole
evaporation" by M.F. Wondrak, W.D. van Suijlekom and H. Falcke [Phys. Rev.
Lett. 130, 221502 (2023); arXiv:2305.18521]. We show that some consequences
based on the proposed imaginary part of the lowest order effective action are
in sharp te... | [
{
"created": "Tue, 13 Jun 2023 08:55:32 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Sep 2023 10:54:48 GMT",
"version": "v2"
}
] | 2023-09-28 | [
[
"Ferreiro",
"Antonio",
""
],
[
"Navarro-Salas",
"Jose",
""
],
[
"Pla",
"Silvia",
""
]
] | We scrutinize the recent Letter "Gravitational pair production and black hole evaporation" by M.F. Wondrak, W.D. van Suijlekom and H. Falcke [Phys. Rev. Lett. 130, 221502 (2023); arXiv:2305.18521]. We show that some consequences based on the proposed imaginary part of the lowest order effective action are in sharp tens... |
1309.6157 | Hossein Ghaffarnejad | Hossein Ghaffarnejad | Spherically symmetric Jordan-Brans-Dicke quantum gravity with de Broglie
Bohm pilot wave perspective | 9 pages | International Journal of Theoretical Physics 2014, online
published 20 March | 10.1007/s10773-014-2059-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain two dimensional analogue of the Jordan-Brans-Dicke (JBD) gravity
action described in four dimensional spherically symmetric curved space time
metric. There will be two scalar fields, namely, the Brans Dicke (BD) $\phi$
and scale factor of 2-sphere part of the space time $\psi.$ We obtained
suitable duality ... | [
{
"created": "Mon, 23 Sep 2013 14:35:24 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jan 2014 20:10:41 GMT",
"version": "v2"
}
] | 2014-03-25 | [
[
"Ghaffarnejad",
"Hossein",
""
]
] | We obtain two dimensional analogue of the Jordan-Brans-Dicke (JBD) gravity action described in four dimensional spherically symmetric curved space time metric. There will be two scalar fields, namely, the Brans Dicke (BD) $\phi$ and scale factor of 2-sphere part of the space time $\psi.$ We obtained suitable duality tr... |
1709.07749 | Tiberiu Harko | Christian G. Boehmer, Piyabut Burikham, Tiberiu Harko, Matthew J. Lake | Does space-time torsion determine the minimum mass of gravitating
particles? | 21 pages, 3 figures; references added; minor revisions, accepted for
publication in EPJC | Eur. Phys. J. C78 (2018) no.3, 253 | 10.1140/epjc/s10052-018-5719-y | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive upper and lower limits for the mass-radius ratio of spin-fluid
spheres in Einstein-Cartan theory, with matter satisfying a linear barotropic
equation of state, and in the presence of a cosmological constant. Adopting a
spherically symmetric interior geometry, we obtain the generalized continuity
and Tolman-... | [
{
"created": "Fri, 22 Sep 2017 13:52:27 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Oct 2017 10:26:17 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Mar 2018 12:37:35 GMT",
"version": "v3"
}
] | 2018-06-25 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Burikham",
"Piyabut",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Lake",
"Matthew J.",
""
]
] | We derive upper and lower limits for the mass-radius ratio of spin-fluid spheres in Einstein-Cartan theory, with matter satisfying a linear barotropic equation of state, and in the presence of a cosmological constant. Adopting a spherically symmetric interior geometry, we obtain the generalized continuity and Tolman-Op... |
gr-qc/0605118 | Vitor Cardoso | Emanuele Berti, Vitor Cardoso | Quasinormal ringing of Kerr black holes: The excitation factors | 33 pages, 9 figures, 7 tables, RevTeX4. v2: Two new figures and minor
changes in the presentation. Matches version in press in Phys. Rev. D | Phys.Rev. D74 (2006) 104020 | 10.1103/PhysRevD.74.104020 | null | gr-qc astro-ph hep-ph physics.space-ph | null | Distorted black holes radiate gravitational waves. In the so-called ringdown
phase radiation is emitted in a discrete set of complex quasinormal
frequencies, whose values depend only on the black hole's mass and angular
momentum. Ringdown radiation could be detectable with large signal-to-noise
ratio by the Laser Int... | [
{
"created": "Sun, 21 May 2006 20:38:38 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Nov 2006 18:04:19 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Berti",
"Emanuele",
""
],
[
"Cardoso",
"Vitor",
""
]
] | Distorted black holes radiate gravitational waves. In the so-called ringdown phase radiation is emitted in a discrete set of complex quasinormal frequencies, whose values depend only on the black hole's mass and angular momentum. Ringdown radiation could be detectable with large signal-to-noise ratio by the Laser Inter... |
gr-qc/9607021 | Tsvi Piran | Tsvi Piran | Relativity at Action or Gamma-Ray Bursts | 7 pages, 4th prize in this years gravity essay competition to appear
in General Relativity and Gravitation. Complete PS file is available at
ftp://shemesh.fiz.huji.ac.il or at
http://shemesh.fiz.huji.ac.il/papers/essay96.uu | null | 10.1007/BF02113771 | null | gr-qc astro-ph | null | Gamma ray Bursts (GRBs) - short bursts of few hundred keV $\gamma$-rays -
have fascinated astronomers since their accidental discovery in the sixties.
GRBs were ignored by most relativists who did not expect that they are
associated with any relativistic phenomenon. The recent observations of the
BATSE detector on th... | [
{
"created": "Mon, 8 Jul 1996 09:03:00 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Piran",
"Tsvi",
""
]
] | Gamma ray Bursts (GRBs) - short bursts of few hundred keV $\gamma$-rays - have fascinated astronomers since their accidental discovery in the sixties. GRBs were ignored by most relativists who did not expect that they are associated with any relativistic phenomenon. The recent observations of the BATSE detector on the ... |
1106.1751 | Ritabrata Biswas | Sudeshna Mukerji, Nairwita Mazumder, Ritabrata Biswas, Subenoy
Chakraborty | Scalar tensor theory : validity of Cosmic no hair conjecture | 5 pages | null | 10.1139/p11-074 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper deals with cosmic no hair conjecture in scalar tensor theory of
gravity. Here we have considered both Jordan frame and Einstein frame to
examine the conjecture. In Jordan frame, one should restrict both the coupling
function of the scalar field and the coupling parameter in addition to the
ususal energy con... | [
{
"created": "Thu, 9 Jun 2011 09:09:39 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Mukerji",
"Sudeshna",
""
],
[
"Mazumder",
"Nairwita",
""
],
[
"Biswas",
"Ritabrata",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | The paper deals with cosmic no hair conjecture in scalar tensor theory of gravity. Here we have considered both Jordan frame and Einstein frame to examine the conjecture. In Jordan frame, one should restrict both the coupling function of the scalar field and the coupling parameter in addition to the ususal energy condi... |
1407.4037 | Brian Dolan | Brian P. Dolan | Vacuum energy and the latent heat of AdS-Kerr black holes | 15 pages; 4 figures | Phys. Rev. D 90, 084002 (2014) | 10.1103/PhysRevD.90.084002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Phase transitions for rotating asymptotically anti-de Sitter black holes in
four dimensions are described in the $P-T$ plane, in terms of the Hawking
temperature and the pressure provided by the cosmological constant. The
difference between constant angular momentum and constant angular velocity is
highlighted, the f... | [
{
"created": "Tue, 15 Jul 2014 16:02:53 GMT",
"version": "v1"
}
] | 2014-10-08 | [
[
"Dolan",
"Brian P.",
""
]
] | Phase transitions for rotating asymptotically anti-de Sitter black holes in four dimensions are described in the $P-T$ plane, in terms of the Hawking temperature and the pressure provided by the cosmological constant. The difference between constant angular momentum and constant angular velocity is highlighted, the for... |
2212.06063 | Wei-Can Syu | Wei-Can Syu and Da-Shin Lee | Analogous Hawking radiation from gapped excitations in a transonic flow
of binary Bose-Einstein condensates | Accepted version for publication in Physical Review D: the title
changed; the spatially dependent sound speed and flow velocity profiles
considered; the approximate solution of the gapped mode equations found. 13
pages, 6 figures | null | 10.1103/PhysRevD.107.084049 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We have studied analytically the approximate solutions to the gapped mode
equations in the hydrodynamic regime for a class of binary Bose-Einstein
condensate acoustic black holes. The horizon from the transonic flow is formed
by manipulating the phonon sound speed and the flow velocity with the
experimentally accessi... | [
{
"created": "Mon, 12 Dec 2022 17:30:56 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Apr 2023 03:55:13 GMT",
"version": "v2"
}
] | 2023-05-10 | [
[
"Syu",
"Wei-Can",
""
],
[
"Lee",
"Da-Shin",
""
]
] | We have studied analytically the approximate solutions to the gapped mode equations in the hydrodynamic regime for a class of binary Bose-Einstein condensate acoustic black holes. The horizon from the transonic flow is formed by manipulating the phonon sound speed and the flow velocity with the experimentally accessibl... |
2312.11103 | Stefano Bagnasco | Stefano Bagnasco, Antonella Bozzi, Tassos Fragos, Alba Gonzalvez,
Steffen Hahn, Gary Hemming, Lia Lavezzi, Paul Laycock, Gonzalo Merino, Silvio
Pardi, Steven Schramm, Achim Stahl, Andres Tanasijczuk, Nadia Tonello, Sara
Vallero, John Veitch and Patrice Verdier | Computing Challenges for the Einstein Telescope project | Submitted for the proceedings of CHEP2023 | null | null | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | The discovery of gravitational waves, first observed in September 2015
following the merger of a binary black hole system, has already revolutionised
our understanding of the Universe. This was further enhanced in August 2017,
when the coalescence of a binary neutron star system was observed both with
gravitational w... | [
{
"created": "Mon, 18 Dec 2023 11:03:09 GMT",
"version": "v1"
}
] | 2023-12-19 | [
[
"Bagnasco",
"Stefano",
""
],
[
"Bozzi",
"Antonella",
""
],
[
"Fragos",
"Tassos",
""
],
[
"Gonzalvez",
"Alba",
""
],
[
"Hahn",
"Steffen",
""
],
[
"Hemming",
"Gary",
""
],
[
"Lavezzi",
"Lia",
""
],
[
... | The discovery of gravitational waves, first observed in September 2015 following the merger of a binary black hole system, has already revolutionised our understanding of the Universe. This was further enhanced in August 2017, when the coalescence of a binary neutron star system was observed both with gravitational wav... |
2111.03359 | De-Chang Dai | De-Chang Dai, Djordje Minic and Dejan Stojkovic | Bulk entropy is crucial to validate the second law of the extended black
hole thermodynamics | 9 figures, 7 pages | null | 10.1007/JHEP12(2021)126 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The extended black hole thermodynamics in which the cosmological constant
plays the role of pressure significantly enriches the phase structure of the
theory. In order to understand the extended black hole thermodynamics more
precisely, we let the value of the cosmological constant vary dynamically via
tunneling from... | [
{
"created": "Fri, 5 Nov 2021 10:01:29 GMT",
"version": "v1"
}
] | 2022-01-05 | [
[
"Dai",
"De-Chang",
""
],
[
"Minic",
"Djordje",
""
],
[
"Stojkovic",
"Dejan",
""
]
] | The extended black hole thermodynamics in which the cosmological constant plays the role of pressure significantly enriches the phase structure of the theory. In order to understand the extended black hole thermodynamics more precisely, we let the value of the cosmological constant vary dynamically via tunneling from o... |
gr-qc/9901080 | T. P. Singh | Sukratu Barve, T. P. Singh and Louis Witten | Spherical gravitational collapse: tangential pressure and related
equations of state | Latex, 26 pages | Gen.Rel.Grav.32:697-717,2000 | 10.1023/A:1001919219247 | null | gr-qc | null | We derive an equation for the acceleration of a fluid element in the
spherical gravitational collapse of a bounded compact object made up of an
imperfect fluid. We show that non-singular as well as singular solutions arise
in the collapse of a fluid initially at rest and having only a tangential
pressure. We obtain a... | [
{
"created": "Thu, 28 Jan 1999 07:04:07 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Barve",
"Sukratu",
""
],
[
"Singh",
"T. P.",
""
],
[
"Witten",
"Louis",
""
]
] | We derive an equation for the acceleration of a fluid element in the spherical gravitational collapse of a bounded compact object made up of an imperfect fluid. We show that non-singular as well as singular solutions arise in the collapse of a fluid initially at rest and having only a tangential pressure. We obtain an ... |
0705.0513 | Thomas Murphy Jr. | T. W. Murphy Jr., K. Nordtvedt, S. G. Turyshev | Murphy et al. Reply to the Comment by Kopeikin on "Gravitomagnetic
Influence on Gyroscopes and on the Lunar Orbit" | 1 page; accepted for publication in Physcal Review Letters; refers to
gr-qc/0702028 | Phys.Rev.Lett.98:229002,2007 | 10.1103/PhysRevLett.98.229002 | null | gr-qc | null | Lunar laser ranging analysis, as regularly performed in the solar system
barycentric frame, requires the presence of the gravitomagnetic term in the
equation of motion at the strength predicted by general relativity. The same
term is responsible for the Lense Thirring effect. Any attempt to modify the
strength of the... | [
{
"created": "Thu, 3 May 2007 18:34:53 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Murphy",
"T. W.",
"Jr."
],
[
"Nordtvedt",
"K.",
""
],
[
"Turyshev",
"S. G.",
""
]
] | Lunar laser ranging analysis, as regularly performed in the solar system barycentric frame, requires the presence of the gravitomagnetic term in the equation of motion at the strength predicted by general relativity. The same term is responsible for the Lense Thirring effect. Any attempt to modify the strength of the g... |
2304.01252 | Vitor Cardoso | Vitor Cardoso, Francisco Duque, Andrea Maselli, David Pere\~niguez | Constraints on massive gravity from dipolar mode excitations | 5 pages plus Supplemental Material | null | null | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study extreme-mass-ratio systems in theories admitting the Schwarzschild
solution and propagating a massive graviton. We show that, in addition to small
corrections to the quadrupolar and higher-order modes, a dipolar mode is
excited in these theories and we quantify its excitation. While
LIGO-Virgo-KAGRA observat... | [
{
"created": "Mon, 3 Apr 2023 18:00:02 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Nov 2023 05:26:39 GMT",
"version": "v2"
}
] | 2023-11-21 | [
[
"Cardoso",
"Vitor",
""
],
[
"Duque",
"Francisco",
""
],
[
"Maselli",
"Andrea",
""
],
[
"Pereñiguez",
"David",
""
]
] | We study extreme-mass-ratio systems in theories admitting the Schwarzschild solution and propagating a massive graviton. We show that, in addition to small corrections to the quadrupolar and higher-order modes, a dipolar mode is excited in these theories and we quantify its excitation. While LIGO-Virgo-KAGRA observatio... |
gr-qc/0702026 | Orchidea Maria Lecian | Orchidea Maria Lecian, Giovanni Montani | Electro-weak Model within the framework of Lorentz gauge theory:
Ashtekar variables? | 5 pages, to appear in the Proceedings of the 1st Stueckelberg
Workshop | Nuovo Cim.B122:207-212,2007 | 10.1393/ncb/i2007-10357-y | null | gr-qc | null | The Electroweak (EW) model is geometrized in the framework of a 5D gauge
theory of the Lorentz group, after the implementation of the Kaluza-Klein (KK)
paradigm. The possibility of introducing Ashtekar variables on a 5D KK manifold
is considered on the ground of its geometrical structure.
| [
{
"created": "Mon, 5 Feb 2007 17:30:16 GMT",
"version": "v1"
}
] | 2010-11-11 | [
[
"Lecian",
"Orchidea Maria",
""
],
[
"Montani",
"Giovanni",
""
]
] | The Electroweak (EW) model is geometrized in the framework of a 5D gauge theory of the Lorentz group, after the implementation of the Kaluza-Klein (KK) paradigm. The possibility of introducing Ashtekar variables on a 5D KK manifold is considered on the ground of its geometrical structure. |
0705.3304 | Pinaki Roy | T. Jana and P. Roy | Higher order intertwining approach to quasinormal modes | null | null | 10.1088/1751-8113/40/22/007 | null | gr-qc | null | Using higher order intertwining operators we obtain new exactly solvable
potentials admitting quasinormal mode (QNMs) solutions of the Klein-Gordon
equation. It is also shown that different potentials exhibiting QNMs can be
related through nonlinear supersymmetry.
| [
{
"created": "Wed, 23 May 2007 08:33:36 GMT",
"version": "v1"
}
] | 2009-11-13 | [
[
"Jana",
"T.",
""
],
[
"Roy",
"P.",
""
]
] | Using higher order intertwining operators we obtain new exactly solvable potentials admitting quasinormal mode (QNMs) solutions of the Klein-Gordon equation. It is also shown that different potentials exhibiting QNMs can be related through nonlinear supersymmetry. |
2001.00935 | John W. Moffat | J. W. Moffat | Gravitational Theory of Cosmology, Galaxies and Galaxy Clusters | 9 pages, 2 figures. arXiv admin note: substantial text overlap with
arXiv:1409.0853, arXiv:1510.07037 | The European Physical Journal C (2020) 80:906 | 10.1140/epjc/s10052-020-08482-x | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A modified gravitational theory explains early universe and late time
cosmology, galaxy and galaxy cluster dynamics. The modified gravity (MOG)
theory extends general relativity (GR) by three extra degrees of freedom: a
scalar field $G$, enhancing the strength of the Newtonian gravitational
constant $G_N$, a gravitat... | [
{
"created": "Thu, 2 Jan 2020 22:25:48 GMT",
"version": "v1"
}
] | 2020-10-30 | [
[
"Moffat",
"J. W.",
""
]
] | A modified gravitational theory explains early universe and late time cosmology, galaxy and galaxy cluster dynamics. The modified gravity (MOG) theory extends general relativity (GR) by three extra degrees of freedom: a scalar field $G$, enhancing the strength of the Newtonian gravitational constant $G_N$, a gravitatio... |
1203.2016 | Di Liu | Di Liu, Puxun Wu, Hongwei Yu | G\"odel-type universes in f(T) gravity | 18 pages, introduction revised, reference added | Int. J. Mod. Phys. D, 21, 09 (2012) 1250074 | 10.1142/S0218271812500745 | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | The issue of causality in $f(T)$ gravity is investigated by examining the
possibility of existence of the closed timelike curves in the G\"{o}del-type
metric. By assuming a perfect fluid as the matter source, we find that the
fluid must have an equation of state parameter greater than minus one in order
to allow the ... | [
{
"created": "Fri, 9 Mar 2012 08:38:59 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Sep 2012 12:07:51 GMT",
"version": "v2"
},
{
"created": "Mon, 8 Oct 2012 11:39:45 GMT",
"version": "v3"
},
{
"created": "Fri, 12 Oct 2012 13:48:28 GMT",
"version": "v4"
}
] | 2012-10-15 | [
[
"Liu",
"Di",
""
],
[
"Wu",
"Puxun",
""
],
[
"Yu",
"Hongwei",
""
]
] | The issue of causality in $f(T)$ gravity is investigated by examining the possibility of existence of the closed timelike curves in the G\"{o}del-type metric. By assuming a perfect fluid as the matter source, we find that the fluid must have an equation of state parameter greater than minus one in order to allow the G\... |
2301.01186 | Olivier Minazzoli | L. Bernus, O. Minazzoli, A. Fienga, A. Hees, M. Gastineau, J. Laskar,
P. Deram, A. Di Ruscio | Constraining massless dilaton theory at Solar system scales with the
planetary ephemeris INPOP | 29 pages, 6 figures, 5 tables. Might have minor differences with
published version | Physical Review D, Volume 105, Issue 4, article id.044057,
February 2022 | 10.1103/PhysRevD.105.044057 | null | gr-qc astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We expose the phenomenology of the massless dilaton theory in the Solar
system for a non universal quadratic coupling between the scalar field which
represents the dilaton, and the matter. Modified post-Newtonian equations of
motion of an $N$-body system and the light time travel are derived from the
action of the th... | [
{
"created": "Tue, 3 Jan 2023 16:34:01 GMT",
"version": "v1"
}
] | 2023-01-04 | [
[
"Bernus",
"L.",
""
],
[
"Minazzoli",
"O.",
""
],
[
"Fienga",
"A.",
""
],
[
"Hees",
"A.",
""
],
[
"Gastineau",
"M.",
""
],
[
"Laskar",
"J.",
""
],
[
"Deram",
"P.",
""
],
[
"Di Ruscio",
"A.",
... | We expose the phenomenology of the massless dilaton theory in the Solar system for a non universal quadratic coupling between the scalar field which represents the dilaton, and the matter. Modified post-Newtonian equations of motion of an $N$-body system and the light time travel are derived from the action of the theo... |
gr-qc/0407090 | Christoph Adami | Christoph Adami and Greg Ver Steeg | Classical information transmission capacity of quantum black holes | 18 pages, 2 figures. Uses iopart.cls | Class. Quantum Grav. 31 (2014) 075015 | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The fate of classical information incident on a quantum black hole has been
the subject of an ongoing controversy in theoretical physics, because a
calculation within the framework of semi-classical curved-space quantum field
theory appears to show that the incident information is irretrievably lost, in
contradiction... | [
{
"created": "Fri, 23 Jul 2004 19:33:44 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Aug 2004 00:39:51 GMT",
"version": "v2"
},
{
"created": "Tue, 11 Jan 2005 03:43:39 GMT",
"version": "v3"
},
{
"created": "Wed, 11 Jan 2006 00:58:42 GMT",
"version": "v4"
},
{
"c... | 2014-03-17 | [
[
"Adami",
"Christoph",
""
],
[
"Steeg",
"Greg Ver",
""
]
] | The fate of classical information incident on a quantum black hole has been the subject of an ongoing controversy in theoretical physics, because a calculation within the framework of semi-classical curved-space quantum field theory appears to show that the incident information is irretrievably lost, in contradiction t... |
1012.0226 | Lorenzo Iorio | Lorenzo Iorio | Solar system constraints on a Rindler-type extra-acceleration from
modified gravity at large distances | LaTex2e, 22 pages, 6 figures, 2 tables, 32 references. To appear in
Journal of Cosmology and Astroparticle Physics (JCAP) | JCAP05(2011)019 | 10.1088/1475-7516/2011/05/019 | null | gr-qc astro-ph.EP physics.geo-ph physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically work out the orbital effects caused by a Rindlertype
extra-acceleration ARin which naturally arises in some recent models of
modified gravity at large distances. In particular, we focus on the
perturbations induced by it on the two-body range {\rho} and range-rate
{\rho}\cdot which are commonly used i... | [
{
"created": "Wed, 1 Dec 2010 15:41:20 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Mar 2011 14:55:35 GMT",
"version": "v2"
},
{
"created": "Tue, 10 May 2011 16:05:47 GMT",
"version": "v3"
}
] | 2011-05-24 | [
[
"Iorio",
"Lorenzo",
""
]
] | We analytically work out the orbital effects caused by a Rindlertype extra-acceleration ARin which naturally arises in some recent models of modified gravity at large distances. In particular, we focus on the perturbations induced by it on the two-body range {\rho} and range-rate {\rho}\cdot which are commonly used in ... |
1606.09139 | Andrei Galiautdinov | Andrei Galiautdinov and Sergei M. Kopeikin | Post-Newtonian celestial mechanics in scalar-tensor cosmology | 7 pages, no figures; supplemental materials added: "Derivation of the
wave equations for perturbations", 27 pages, no figures | Phys. Rev. D 94, 044015 (2016) | 10.1103/PhysRevD.94.044015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Applying the recently developed dynamical perturbation formalism on
cosmological background to scalar-tensor theory, we provide a solid theoretical
basis and a rigorous justification for phenomenological models of orbital
dynamics that are currently used to interpret experimental measurements of the
time-dependent gr... | [
{
"created": "Wed, 29 Jun 2016 14:58:07 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Aug 2016 19:10:33 GMT",
"version": "v2"
},
{
"created": "Wed, 12 Jul 2017 17:15:23 GMT",
"version": "v3"
}
] | 2017-07-13 | [
[
"Galiautdinov",
"Andrei",
""
],
[
"Kopeikin",
"Sergei M.",
""
]
] | Applying the recently developed dynamical perturbation formalism on cosmological background to scalar-tensor theory, we provide a solid theoretical basis and a rigorous justification for phenomenological models of orbital dynamics that are currently used to interpret experimental measurements of the time-dependent grav... |
2301.12172 | Titus K Mathew | Rosemin John, Sarath N. and Titus K. Mathew | Thermal evolution and stability analysis of phenomenologically emergent
dark energy model | 14 pages, 10 figures | null | null | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | The phenomenologically emergent dark energy (PEDE) model is a varying dark
energy model with no extra degrees of freedom proposed by Li and
Shafieloo\citep{Li_2019} to alleviate the Hubble tension. The statistical
consistency of the model has been discussed by many authors. Since the model
depicts a phantom dark ener... | [
{
"created": "Sat, 28 Jan 2023 12:00:09 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Feb 2023 10:22:07 GMT",
"version": "v2"
},
{
"created": "Tue, 8 Aug 2023 05:14:21 GMT",
"version": "v3"
}
] | 2023-08-09 | [
[
"John",
"Rosemin",
""
],
[
"N.",
"Sarath",
""
],
[
"Mathew",
"Titus K.",
""
]
] | The phenomenologically emergent dark energy (PEDE) model is a varying dark energy model with no extra degrees of freedom proposed by Li and Shafieloo\citep{Li_2019} to alleviate the Hubble tension. The statistical consistency of the model has been discussed by many authors. Since the model depicts a phantom dark energy... |
1907.11597 | Jan Steinhoff | Andrea Antonelli, Maarten van de Meent, Alessandra Buonanno, Jan
Steinhoff, Justin Vines | Quasi-circular inspirals and plunges from non-spinning
effective-one-body Hamiltonians with gravitational self-force information | 16 pages, 5 figures | Phys. Rev. D 101, 024024 (2020) | 10.1103/PhysRevD.101.024024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The self-force program aims at accurately modeling relativistic two-body
systems with a small mass ratio (SMR). In the context of the effective-one-body
(EOB) framework, current results from this program can be used to determine the
effective metric components at linear order in the mass ratio, resumming
post-Newtoni... | [
{
"created": "Fri, 26 Jul 2019 14:39:33 GMT",
"version": "v1"
}
] | 2020-01-15 | [
[
"Antonelli",
"Andrea",
""
],
[
"van de Meent",
"Maarten",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Steinhoff",
"Jan",
""
],
[
"Vines",
"Justin",
""
]
] | The self-force program aims at accurately modeling relativistic two-body systems with a small mass ratio (SMR). In the context of the effective-one-body (EOB) framework, current results from this program can be used to determine the effective metric components at linear order in the mass ratio, resumming post-Newtonian... |
1811.01563 | Dmitri Fursaev | Dmitri V. Fursaev | Massless Cosmic Strings in Expanding Universe | 17 pages, 4 figures | Phys. Rev. D 98, 123531 (2018) | 10.1103/PhysRevD.98.123531 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Circular massless cosmic strings which move with the speed of light in the de
Sitter universe are described. Construction of the background geometry is based
on parabolic isometries of the de Sitter spacetime. Microscopic circular cosmic
strings may appear at the Planck epoch and then grow up to the Hubble size. We
a... | [
{
"created": "Mon, 5 Nov 2018 09:19:42 GMT",
"version": "v1"
}
] | 2019-01-02 | [
[
"Fursaev",
"Dmitri V.",
""
]
] | Circular massless cosmic strings which move with the speed of light in the de Sitter universe are described. Construction of the background geometry is based on parabolic isometries of the de Sitter spacetime. Microscopic circular cosmic strings may appear at the Planck epoch and then grow up to the Hubble size. We ana... |
1002.4037 | Richard Woodard | S. P. Miao (CECS), N. C. Tsamis (U. of Crete) and R. P. Woodard (U. of
Florida) | De Sitter Breaking through Infrared Divergences | 27 pages, no figures, uses LaTeX 2epsilon | J.Math.Phys.51:072503,2010 | 10.1063/1.3448926 | UFIFT-QG-10-01 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Just because the propagator of some field obeys a de Sitter invariant
equation does not mean it possesses a de Sitter invariant solution. The classic
example is the propagator of a massless, minimally coupled scalar. We show that
the same thing happens for massive scalars with $M_S^2 < 0$, and for massive
transverse ... | [
{
"created": "Mon, 22 Feb 2010 02:03:34 GMT",
"version": "v1"
}
] | 2011-12-30 | [
[
"Miao",
"S. P.",
"",
"CECS"
],
[
"Tsamis",
"N. C.",
"",
"U. of Crete"
],
[
"Woodard",
"R. P.",
"",
"U. of\n Florida"
]
] | Just because the propagator of some field obeys a de Sitter invariant equation does not mean it possesses a de Sitter invariant solution. The classic example is the propagator of a massless, minimally coupled scalar. We show that the same thing happens for massive scalars with $M_S^2 < 0$, and for massive transverse ve... |
1507.05048 | Michael Good | Michael R.R. Good, Paul R. Anderson and Charles R. Evans | Black Hole - Moving Mirror II: Particle Creation | Contribution to MG14 Proceedings, 5 pages, 4 figures | null | 10.1142/9789813226609_0172 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There is an exact correspondence between the simplest solution to Einstein's
equations describing the formation of a black hole and a particular moving
mirror trajectory. In both cases the Bogolubov coefficients in 1+1 dimensions
are identical and can be computed analytically. Particle creation is
investigated by usi... | [
{
"created": "Mon, 13 Jul 2015 17:30:31 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Jan 2016 10:52:39 GMT",
"version": "v2"
}
] | 2018-07-27 | [
[
"Good",
"Michael R. R.",
""
],
[
"Anderson",
"Paul R.",
""
],
[
"Evans",
"Charles R.",
""
]
] | There is an exact correspondence between the simplest solution to Einstein's equations describing the formation of a black hole and a particular moving mirror trajectory. In both cases the Bogolubov coefficients in 1+1 dimensions are identical and can be computed analytically. Particle creation is investigated by using... |
1507.02754 | Woei Chet Lim | Woei Chet Lim | Non-orthogonally transitive $G_2$ spike solution | 9 pages, 1 figure | Class. Quantum Grav. 32 (2015) 162001 | 10.1088/0264-9381/32/16/162001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize the orthogonally transitive (OT) $G_2$ spike solution to the
non-OT $G_2$ case. This is achieved by applying Geroch's transformation on a
Kasner seed. The new solution contains two more parameters than the OT $G_2$
spike solution. Unlike the OT $G_2$ spike solution, the new solution always
resolves its ... | [
{
"created": "Fri, 10 Jul 2015 00:39:24 GMT",
"version": "v1"
}
] | 2015-07-27 | [
[
"Lim",
"Woei Chet",
""
]
] | We generalize the orthogonally transitive (OT) $G_2$ spike solution to the non-OT $G_2$ case. This is achieved by applying Geroch's transformation on a Kasner seed. The new solution contains two more parameters than the OT $G_2$ spike solution. Unlike the OT $G_2$ spike solution, the new solution always resolves its sp... |
gr-qc/9604005 | Stefan ]minneborg | Stefan Aminneborg, Ingemar Bengtsson, Soren Holst, Peter Peldan
(Fysikum, Stockholm University) | Making Anti-de Sitter Black Holes | LaTeX, 10 pages, 6 postscript figures, uses epsf.tex | Class.Quant.Grav. 13 (1996) 2707-2714 | 10.1088/0264-9381/13/10/010 | USITP 96-4 | gr-qc | null | It is known from the work of Banados et al. that a space-time with event
horizons (much like the Schwarzschild black hole) can be obtained from 2+1
dimensional anti-de Sitter space through a suitable identification of points.
We point out that this can be done in 3+1 dimensions as well. In this way we
obtain black ho... | [
{
"created": "Tue, 2 Apr 1996 18:30:41 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Aminneborg",
"Stefan",
"",
"Fysikum, Stockholm University"
],
[
"Bengtsson",
"Ingemar",
"",
"Fysikum, Stockholm University"
],
[
"Holst",
"Soren",
"",
"Fysikum, Stockholm University"
],
[
"Peldan",
"Peter",
"",
"Fysikum, Stockholm Univer... | It is known from the work of Banados et al. that a space-time with event horizons (much like the Schwarzschild black hole) can be obtained from 2+1 dimensional anti-de Sitter space through a suitable identification of points. We point out that this can be done in 3+1 dimensions as well. In this way we obtain black hole... |
1811.02742 | Tiberiu Harko | Bogdan Danila, Tiberiu Harko, Francisco S. N. Lobo, Man Kwong Mak | Spherically symmetric static vacuum solutions in hybrid metric-Palatini
gravity | 22 pages, 11 figures, accepted for publication in PRD | Phys. Rev. D 99, 064028 (2019) | 10.1103/PhysRevD.99.064028 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider vacuum static spherically symmetric solutions in the hybrid
metric-Palatini gravity theory, which is a combination of the metric and
Palatini $f(R)$ formalisms unifying local constraints at the Solar System level
and the late-time cosmic acceleration. We adopt the scalar-tensor
representation of the hybri... | [
{
"created": "Wed, 7 Nov 2018 02:59:44 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Mar 2019 06:52:11 GMT",
"version": "v2"
}
] | 2019-04-03 | [
[
"Danila",
"Bogdan",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Mak",
"Man Kwong",
""
]
] | We consider vacuum static spherically symmetric solutions in the hybrid metric-Palatini gravity theory, which is a combination of the metric and Palatini $f(R)$ formalisms unifying local constraints at the Solar System level and the late-time cosmic acceleration. We adopt the scalar-tensor representation of the hybrid ... |
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