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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1202.3131 | Yuuiti Sendouda | Nathalie Deruelle, Misao Sasaki, Yuuiti Sendouda, Ahmed Youssef | Lorentz-violating vs ghost gravitons: the example of Weyl gravity | 14 pages, 3 figures, REVTeX 4.1 | null | 10.1007/JHEP09(2012)009 | YITP-12-3 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the ghost degrees of freedom of Einstein gravity with a Weyl
term can be eliminated by a simple mechanism that invokes local Lorentz
symmetry breaking. We demonstrate how the mechanism works in a cosmological
setting. The presence of the Weyl term forces a redefinition of the quantum
vacuum state of the ... | [
{
"created": "Tue, 14 Feb 2012 20:20:01 GMT",
"version": "v1"
}
] | 2015-06-04 | [
[
"Deruelle",
"Nathalie",
""
],
[
"Sasaki",
"Misao",
""
],
[
"Sendouda",
"Yuuiti",
""
],
[
"Youssef",
"Ahmed",
""
]
] | We show that the ghost degrees of freedom of Einstein gravity with a Weyl term can be eliminated by a simple mechanism that invokes local Lorentz symmetry breaking. We demonstrate how the mechanism works in a cosmological setting. The presence of the Weyl term forces a redefinition of the quantum vacuum state of the te... |
0705.2252 | Carlos Augusto Romero Filho | M. A. S. Cruz, F. Dahia and C. Romero | Inducing charges and currents from extra dimensions | 8 pages. Accepted for publication in Modern Physics Letters A | Mod.Phys.Lett.A23:197-203,2008 | 10.1142/S0217732308023839 | null | gr-qc | null | In a particular variant of Kaluza-Klein theory, the so-called induced-matter
theory (IMT), it is shown that any configuration of matter may be geometrically
induced from a five-dimensional vacuum space. By using a similar approach we
show that any distribution of charges and currents may also be induced from a
five-d... | [
{
"created": "Tue, 15 May 2007 22:21:11 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Cruz",
"M. A. S.",
""
],
[
"Dahia",
"F.",
""
],
[
"Romero",
"C.",
""
]
] | In a particular variant of Kaluza-Klein theory, the so-called induced-matter theory (IMT), it is shown that any configuration of matter may be geometrically induced from a five-dimensional vacuum space. By using a similar approach we show that any distribution of charges and currents may also be induced from a five-dim... |
gr-qc/9704028 | Bill Hiscock | Shane L. Larson, William A. Hiscock (Montana State University) | Astrophysical Bounds on Global Strings | 14 pages, REVTeX | Phys.Rev. D56 (1997) 3242-3247 | 10.1103/PhysRevD.56.3242 | MSUPHY97.08 | gr-qc | null | Global topological defects produce nonzero stress-energy throughout
spacetime, and as a result can have observable gravitational influence on
surrounding matter. Gravitational effects of global strings are used to place
bounds on their cosmic abundance. The minimum separation between global strings
is estimated by co... | [
{
"created": "Wed, 9 Apr 1997 16:03:22 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Larson",
"Shane L.",
"",
"Montana State University"
],
[
"Hiscock",
"William A.",
"",
"Montana State University"
]
] | Global topological defects produce nonzero stress-energy throughout spacetime, and as a result can have observable gravitational influence on surrounding matter. Gravitational effects of global strings are used to place bounds on their cosmic abundance. The minimum separation between global strings is estimated by cons... |
gr-qc/0011060 | Rachael M. Hawkins | Rachael M. Hawkins and James E. Lidsey | Inflation on a single brane - exact solutions | 6 pages, Revtex, In Press Phys. Rev. D | Phys.Rev.D63:041301,2001 | 10.1103/PhysRevD.63.041301 | null | gr-qc | null | Algorithms are developed for generating a class of exact braneworld
cosmologies, where a self-interacting scalar field is confined to a
positive-tension brane embedded in a bulk containing a negative cosmological
constant. It is assumed that the five-dimensional Planck scale exceeds the
brane tension but is smaller t... | [
{
"created": "Fri, 17 Nov 2000 13:10:27 GMT",
"version": "v1"
}
] | 2009-12-31 | [
[
"Hawkins",
"Rachael M.",
""
],
[
"Lidsey",
"James E.",
""
]
] | Algorithms are developed for generating a class of exact braneworld cosmologies, where a self-interacting scalar field is confined to a positive-tension brane embedded in a bulk containing a negative cosmological constant. It is assumed that the five-dimensional Planck scale exceeds the brane tension but is smaller tha... |
1011.3065 | Galina L. Klimchitskaya | G. L. Klimchitskaya and C. Romero | Strengthening constraints on Yukawa-type corrections to Newtonian
gravity from measuring the Casimir force between a cylinder and a plate | 17 pages, 2 figures; to appear in Phys. Rev. D | Phys.Rev.D82:115005,2010 | 10.1103/PhysRevD.82.115005 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss possibility to obtain stronger constraints on non-Newtonian
gravity from measuring the gradient of the Casimir force between a cylinder and
a plate. Exact analytical expression for the Yukawa-type force in a
cylinder-plate configuration is obtained, as well as its asymptotic expansions.
The gravitational f... | [
{
"created": "Fri, 12 Nov 2010 22:22:38 GMT",
"version": "v1"
}
] | 2010-12-24 | [
[
"Klimchitskaya",
"G. L.",
""
],
[
"Romero",
"C.",
""
]
] | We discuss possibility to obtain stronger constraints on non-Newtonian gravity from measuring the gradient of the Casimir force between a cylinder and a plate. Exact analytical expression for the Yukawa-type force in a cylinder-plate configuration is obtained, as well as its asymptotic expansions. The gravitational for... |
gr-qc/0303096 | Ruth Lazkoz | J.M. Aguirregabiria, L.P. Chimento, and Ruth Lazkoz | Anisotropy and inflation in Bianchi I brane worlds | 10 pages, improved discussion on the likeliness of
non-isotropization, completed list of references, matches version to appear
in Class. Quantum Grav | Class.Quant.Grav. 21 (2004) 823-830 | 10.1088/0264-9381/21/4/005 | null | gr-qc hep-th | null | After a more general assumption on the influence of the bulk on the brane, we
extend some conclusions by Maartens et al. and Santos et al. on the asymptotic
behavior of Bianchi I brane worlds. As a consequence of the nonlocal
anisotropic stresses induced by the bulk, in most of our models, the brane does
not isotropi... | [
{
"created": "Tue, 25 Mar 2003 15:15:18 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Dec 2003 13:21:49 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Aguirregabiria",
"J. M.",
""
],
[
"Chimento",
"L. P.",
""
],
[
"Lazkoz",
"Ruth",
""
]
] | After a more general assumption on the influence of the bulk on the brane, we extend some conclusions by Maartens et al. and Santos et al. on the asymptotic behavior of Bianchi I brane worlds. As a consequence of the nonlocal anisotropic stresses induced by the bulk, in most of our models, the brane does not isotropize... |
2201.04694 | Christian Pfeifer | Dagmar L\"a\"anemets, Manuel Hohmann, Christian Pfeifer | Observables from spherically symmetric modified dispersion relations | Contribution to the Special Issue of the International Journal of
Geometric Methods in Modern Physics dedicated to the conference Geometric
Foundations of Gravity 2021, journal version | Int.J.Geom.Meth.Mod.Phys. 19 (2022) 10, 2250155 | 10.1142/S0219887822501559 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we continue the systematic study of observable effects emerging
from modified dispersion relations. We study the motion of test particles
subject to a general first order modification of the general relativistic
dispersion relation as well as subject to the $\kappa$-Poincar\'e dispersion
relation in sphe... | [
{
"created": "Wed, 12 Jan 2022 20:48:14 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Aug 2022 11:40:19 GMT",
"version": "v2"
},
{
"created": "Wed, 31 Aug 2022 16:05:17 GMT",
"version": "v3"
}
] | 2022-09-01 | [
[
"Läänemets",
"Dagmar",
""
],
[
"Hohmann",
"Manuel",
""
],
[
"Pfeifer",
"Christian",
""
]
] | In this work we continue the systematic study of observable effects emerging from modified dispersion relations. We study the motion of test particles subject to a general first order modification of the general relativistic dispersion relation as well as subject to the $\kappa$-Poincar\'e dispersion relation in spheri... |
gr-qc/0106026 | Bela Szilagyi | Bela Szilagyi, Bernd Schmidt, and Jeffrey Winicour | Boundary conditions in linearized harmonic gravity | 22 pages, 6 Postscript figures | Phys.Rev.D65:064015,2002 | 10.1103/PhysRevD.65.064015 | null | gr-qc | null | We investigate the initial-boundary value problem for linearized
gravitational theory in harmonic coordinates. Rigorous techniques for
hyperbolic systems are applied to establish well-posedness for various
reductions of the system into a set of six wave equations. The results are used
to formulate computational algor... | [
{
"created": "Thu, 7 Jun 2001 15:45:37 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Nov 2001 19:24:11 GMT",
"version": "v2"
}
] | 2011-04-21 | [
[
"Szilagyi",
"Bela",
""
],
[
"Schmidt",
"Bernd",
""
],
[
"Winicour",
"Jeffrey",
""
]
] | We investigate the initial-boundary value problem for linearized gravitational theory in harmonic coordinates. Rigorous techniques for hyperbolic systems are applied to establish well-posedness for various reductions of the system into a set of six wave equations. The results are used to formulate computational algorit... |
2203.12809 | Eloy Ay\'on-Beato | Eloy Ay\'on-Beato | Unveiling the electrodynamics of the first nonlinearly charged rotating
black hole | 4 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | After many years of efforts, the first nonlinearly charged rotating black
hole has been finally reported by Garcia-Diaz in two recent works. This is an
important result that was pending in General Relativity, since nonlinear
generalizations of the Kerr-Newman solution were not yet known. Unfortunately,
the Lagrangian... | [
{
"created": "Thu, 24 Mar 2022 02:19:46 GMT",
"version": "v1"
}
] | 2022-03-28 | [
[
"Ayón-Beato",
"Eloy",
""
]
] | After many years of efforts, the first nonlinearly charged rotating black hole has been finally reported by Garcia-Diaz in two recent works. This is an important result that was pending in General Relativity, since nonlinear generalizations of the Kerr-Newman solution were not yet known. Unfortunately, the Lagrangian s... |
0809.1036 | Spenta Wadia | Spenta R. Wadia | String Theory: A Framework for Quantum Gravity and Various Applications | 38 pages, 5 figures, Article for TWAS Jubilee Publication, References
and Comments added | null | null | TIFR/TH/08-32 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this semi-technical review we discuss string theory (and all that goes by
that name) as a framework for a quantum theory of gravity. This is a new
paradigm in theoretical physics that goes beyond relativistic quantum field
theory. We provide concrete evidence for this proposal. It leads to the
resolution of the ul... | [
{
"created": "Fri, 5 Sep 2008 14:17:16 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Nov 2008 10:52:39 GMT",
"version": "v2"
}
] | 2008-11-05 | [
[
"Wadia",
"Spenta R.",
""
]
] | In this semi-technical review we discuss string theory (and all that goes by that name) as a framework for a quantum theory of gravity. This is a new paradigm in theoretical physics that goes beyond relativistic quantum field theory. We provide concrete evidence for this proposal. It leads to the resolution of the ultr... |
0901.0640 | Krzysztof A. Meissner | Krzysztof A. Meissner | Horizons and the cosmological constant | 6 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new solution of the Einstein equations for the point mass immersed in the
de Sitter Universe is presented. The properties of the metric are very
different from both the Schwarzschild black hole and the de Sitter Universe: it
is everywhere smooth, light can propagate outward through the horizon, there is
an antitrap... | [
{
"created": "Tue, 6 Jan 2009 14:52:16 GMT",
"version": "v1"
}
] | 2009-01-07 | [
[
"Meissner",
"Krzysztof A.",
""
]
] | A new solution of the Einstein equations for the point mass immersed in the de Sitter Universe is presented. The properties of the metric are very different from both the Schwarzschild black hole and the de Sitter Universe: it is everywhere smooth, light can propagate outward through the horizon, there is an antitrappe... |
2305.08756 | Bernardo Araneda | Bernardo Araneda | Complex conformal transformations and zero-rest-mass fields | 16 pages | null | 10.1103/PhysRevD.108.024032 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We give a simple prescription for relating different solutions to the
zero-rest-mass field equations in conformally flat space-time via complex
conformal transformations and changes in reality conditions. We give several
examples including linearized black holes. In particular, we show that the
linearized Plebanski-D... | [
{
"created": "Mon, 15 May 2023 16:10:35 GMT",
"version": "v1"
}
] | 2023-07-26 | [
[
"Araneda",
"Bernardo",
""
]
] | We give a simple prescription for relating different solutions to the zero-rest-mass field equations in conformally flat space-time via complex conformal transformations and changes in reality conditions. We give several examples including linearized black holes. In particular, we show that the linearized Plebanski-Dem... |
1003.0882 | Ulrich Sperhake | U.Sperhake, V.Cardoso, F.Pretorius, E.Berti, T.Hinderer, N.Yunes | Ultra-relativistic grazing collisions of black holes | Proceedings for the 12th Marcel Grossman Meeting | null | 10.1103/PhysRevD.81.104048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study gravitational wave emission, zoom-whirl behavior and the resulting
spin of the remnant black hole in highly boosted collisions of equal-mass, non
spinning black-hole binaries with generic impact parameter.
| [
{
"created": "Wed, 3 Mar 2010 19:43:17 GMT",
"version": "v1"
}
] | 2013-05-29 | [
[
"Sperhake",
"U.",
""
],
[
"Cardoso",
"V.",
""
],
[
"Pretorius",
"F.",
""
],
[
"Berti",
"E.",
""
],
[
"Hinderer",
"T.",
""
],
[
"Yunes",
"N.",
""
]
] | We study gravitational wave emission, zoom-whirl behavior and the resulting spin of the remnant black hole in highly boosted collisions of equal-mass, non spinning black-hole binaries with generic impact parameter. |
2012.04472 | Meir Shimon | Meir Shimon | Weyl-Invariant Gravity and the Nature of Dark Matter | Matches published version | null | 10.1088/1361-6382/abeae5 | null | gr-qc astro-ph.CO astro-ph.GA hep-ph | http://creativecommons.org/licenses/by/4.0/ | The apparent missing mass in galaxies and galaxy clusters, commonly viewed as
evidence for dark matter, could possibly originate from gradients in the
gravitational coupling parameter, $G$, and active gravitational mass,
$M_{act}$, rather than hypothetical beyond-the-standard-model particles. We
argue that in (the we... | [
{
"created": "Sun, 6 Dec 2020 11:55:50 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Apr 2022 13:56:56 GMT",
"version": "v2"
}
] | 2022-04-05 | [
[
"Shimon",
"Meir",
""
]
] | The apparent missing mass in galaxies and galaxy clusters, commonly viewed as evidence for dark matter, could possibly originate from gradients in the gravitational coupling parameter, $G$, and active gravitational mass, $M_{act}$, rather than hypothetical beyond-the-standard-model particles. We argue that in (the weak... |
2011.10168 | R Loll | J. Brunekreef, R. Loll | Curvature profiles for quantum gravity | 30 pages, 14 figures | Phys. Rev. D 103, 026019 (2021) | 10.1103/PhysRevD.103.026019 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Building on the recently introduced notion of quantum Ricci curvature and
motivated by considerations in nonperturbative quantum gravity, we advocate a
new, global observable for curved metric spaces, the curvature profile. It is
obtained by integrating the scale-dependent, quasi-local quantum Ricci
curvature, and th... | [
{
"created": "Fri, 20 Nov 2020 01:37:21 GMT",
"version": "v1"
}
] | 2021-02-03 | [
[
"Brunekreef",
"J.",
""
],
[
"Loll",
"R.",
""
]
] | Building on the recently introduced notion of quantum Ricci curvature and motivated by considerations in nonperturbative quantum gravity, we advocate a new, global observable for curved metric spaces, the curvature profile. It is obtained by integrating the scale-dependent, quasi-local quantum Ricci curvature, and ther... |
1706.09078 | Mark A. Scheel | Mark A. Scheel and Kip S. Thorne | Geometrodynamics: The Nonlinear Dynamics of Curved Spacetime | 12 pages, 14 figures. Published in 2014 in Uspekhi Fizicheskikh Nauk
and P N Lebedev Physics Institute of the Russian Academy of Sciences in an
issue commemorating the 100th anniversary of the birth of Y B Zeldovich | Phys.-Usp. 57 342 (2014) | 10.3367/UFNe.0184.201404b.0367 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review discoveries in the nonlinear dynamics of curved spacetime, largely
made possible by numerical solutions of Einstein's equations. We discuss
critical phenomena and self-similarity in gravitational collapse, the behavior
of spacetime curvature near singularities, the instability of black strings in
5 spacetim... | [
{
"created": "Wed, 28 Jun 2017 00:02:40 GMT",
"version": "v1"
}
] | 2017-06-29 | [
[
"Scheel",
"Mark A.",
""
],
[
"Thorne",
"Kip S.",
""
]
] | We review discoveries in the nonlinear dynamics of curved spacetime, largely made possible by numerical solutions of Einstein's equations. We discuss critical phenomena and self-similarity in gravitational collapse, the behavior of spacetime curvature near singularities, the instability of black strings in 5 spacetime ... |
gr-qc/0403068 | Sergei Kopeikin M. | Sergei Kopeikin and Igor Vlasov (University of Missouri-Columbia, USA) | Parametrized Post-Newtonian Theory of Reference Frames, Multipolar
Expansions and Equations of Motion in the N-body Problem | 121 pages, 5 figures, references added, improvements made in response
to referee's report | Phys.Rept.400:209-318,2004 | 10.1016/j.physrep.2004.08.004 | null | gr-qc astro-ph math-ph math.MP | null | We discuss a covariant generalization of the parametrized post-Newtonian
(PPN) formalism in a class of scalar-tensor theories of gravity. It includes an
exact construction of a set of global and local (Fermi-like) references frames
for an isolated N-body astronomical system as well as PPN multipolar
decomposition of ... | [
{
"created": "Mon, 15 Mar 2004 21:42:22 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Jul 2004 17:06:10 GMT",
"version": "v2"
},
{
"created": "Wed, 24 May 2006 16:41:20 GMT",
"version": "v3"
}
] | 2009-01-14 | [
[
"Kopeikin",
"Sergei",
"",
"University of Missouri-Columbia, USA"
],
[
"Vlasov",
"Igor",
"",
"University of Missouri-Columbia, USA"
]
] | We discuss a covariant generalization of the parametrized post-Newtonian (PPN) formalism in a class of scalar-tensor theories of gravity. It includes an exact construction of a set of global and local (Fermi-like) references frames for an isolated N-body astronomical system as well as PPN multipolar decomposition of gr... |
2209.00341 | Mouhssine Koussour | M. Koussour, S. H. Shekh, H. Filali and M. Bennai | Barrow holographic dark energy models in $f\left( Q\right)$ symmetric
teleparallel gravity with Lambert function distribution | IJGMMP accepted version | International Journal of Geometric Methods in Modern Physics
(2022) | 10.1142/S0219887823500196 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper presents Barrow holographic dark energy (infrared cut-off is the
Hubble horizon) suggested by Barrow recently (Physics Letters B 808 (2020):
135643) in an anisotropic Bianchi type-I Universe within the framework of $%
f\left( Q\right) $ symmetric teleparallel gravity, where the non-metricity
scalar $Q$ is r... | [
{
"created": "Thu, 1 Sep 2022 10:18:03 GMT",
"version": "v1"
}
] | 2022-12-01 | [
[
"Koussour",
"M.",
""
],
[
"Shekh",
"S. H.",
""
],
[
"Filali",
"H.",
""
],
[
"Bennai",
"M.",
""
]
] | The paper presents Barrow holographic dark energy (infrared cut-off is the Hubble horizon) suggested by Barrow recently (Physics Letters B 808 (2020): 135643) in an anisotropic Bianchi type-I Universe within the framework of $% f\left( Q\right) $ symmetric teleparallel gravity, where the non-metricity scalar $Q$ is res... |
2405.09471 | Luis B Castro | Luis B. Castro and Angel E. Obispo and Andr\'es G. Jir\'on | Charged scalar bosons in a Bonnor-Melvin-$\Lambda$ universe at conical
approximation | 11 pages, 5 figures | Eur. Phys. J. C 84 (2024) 536 | 10.1140/epjc/s10052-024-12911-6 | null | gr-qc hep-th math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quantum dynamics of charged scalar bosons in a Bonnor-Melvin-$\Lambda$
universe is considered. In this study, the behavior of charged scalar bosons is
explored within the framework of the Duffin-Kemmer-Petiau (DKP) formalism.
Adopting a conical approximation ($\Lambda\ll 1$), we are considered two
scenarios for t... | [
{
"created": "Wed, 15 May 2024 16:09:02 GMT",
"version": "v1"
}
] | 2024-05-30 | [
[
"Castro",
"Luis B.",
""
],
[
"Obispo",
"Angel E.",
""
],
[
"Jirón",
"Andrés G.",
""
]
] | The quantum dynamics of charged scalar bosons in a Bonnor-Melvin-$\Lambda$ universe is considered. In this study, the behavior of charged scalar bosons is explored within the framework of the Duffin-Kemmer-Petiau (DKP) formalism. Adopting a conical approximation ($\Lambda\ll 1$), we are considered two scenarios for the... |
gr-qc/9809024 | Laszlo A. Gergely | L\'aszl\'o \'A. Gergely | Spherically symmetric static solution for colliding null dust | 12 pages, 7 figures, to appear in Phys. Rev. D | Phys.Rev.D58:084030,1998 | 10.1103/PhysRevD.58.084030 | null | gr-qc | null | The Einstein equations are integrated in the presence of two (incoming and
outgoing) streams of null dust, under the assumptions of spherical symmetry and
staticity. The solution is also written in double null and radiation
coordinates and it is reinterpreted as an anisotropic fluid. Interior matching
with a static f... | [
{
"created": "Fri, 4 Sep 1998 21:09:44 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Gergely",
"László Á.",
""
]
] | The Einstein equations are integrated in the presence of two (incoming and outgoing) streams of null dust, under the assumptions of spherical symmetry and staticity. The solution is also written in double null and radiation coordinates and it is reinterpreted as an anisotropic fluid. Interior matching with a static flu... |
1509.08181 | Maxim Eingorn | Maxim Eingorn, Ruslan Brilenkov | Perfect fluids with $\omega=\mathrm{const}$ as sources of scalar
cosmological perturbations | 14 pages, no figures | Physics of the Dark Universe 17, 63 (2017) | 10.1016/j.dark.2017.08.003 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We make a generalization of a self-consistent first-order perturbation
scheme, being suitable for all (sub-horizon and super-horizon) scales, which
has been recently constructed for the concordance cosmological model and
discrete presentation of matter sources, to the case of extended models with
extra perfect fluids... | [
{
"created": "Mon, 28 Sep 2015 02:51:07 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Mar 2016 18:39:05 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Sep 2017 17:20:51 GMT",
"version": "v3"
}
] | 2017-09-11 | [
[
"Eingorn",
"Maxim",
""
],
[
"Brilenkov",
"Ruslan",
""
]
] | We make a generalization of a self-consistent first-order perturbation scheme, being suitable for all (sub-horizon and super-horizon) scales, which has been recently constructed for the concordance cosmological model and discrete presentation of matter sources, to the case of extended models with extra perfect fluids a... |
2304.04551 | Takuya Katagiri | Takuya Katagiri, Hiroyuki Nakano, Kazuyuki Omukai | Stability of relativistic tidal response against small potential
modification | 44 pages, 19 figures, v2: minor corrections, v3: minor corrections,
accepted for publication in PRD | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The tidal response of compact objects in an inspiraling binary system is
measured by a set of tidal Love and dissipation numbers imprinted in the
gravitational waveforms. While a four-dimensional black hole in vacuum within
General Relativity has vanishing Love numbers, a black hole in alternative
theories of gravity... | [
{
"created": "Mon, 10 Apr 2023 12:45:39 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Apr 2023 09:30:03 GMT",
"version": "v2"
},
{
"created": "Thu, 12 Oct 2023 14:59:57 GMT",
"version": "v3"
}
] | 2023-10-13 | [
[
"Katagiri",
"Takuya",
""
],
[
"Nakano",
"Hiroyuki",
""
],
[
"Omukai",
"Kazuyuki",
""
]
] | The tidal response of compact objects in an inspiraling binary system is measured by a set of tidal Love and dissipation numbers imprinted in the gravitational waveforms. While a four-dimensional black hole in vacuum within General Relativity has vanishing Love numbers, a black hole in alternative theories of gravity c... |
1105.3520 | Aron Wall | Aron C. Wall | Testing the Generalized Second Law in 1+1 dimensional Conformal Vacua:
An Argument for the Causal Horizon | 19 pages, 2 figures, v2 significant additions clarifying sections 3,
5, and 6, v3 fixed typo in Eq. (35) | Phys. Rev. D 85, 024015 (2012) | 10.1103/PhysRevD.85.024015 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The anomalous conformal transformation law of the generalized entropy is
found for dilaton gravity coupled to a 1+1 conformal matter sector with central
charges $c = \tilde{c}$. (When $c \ne \tilde{c}$ the generalized entropy is not
invariant under local Lorentz boosts.) It is shown that a certain second null
derivat... | [
{
"created": "Wed, 18 May 2011 02:59:56 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Jan 2012 03:31:00 GMT",
"version": "v2"
},
{
"created": "Fri, 4 Nov 2016 22:47:18 GMT",
"version": "v3"
}
] | 2016-11-08 | [
[
"Wall",
"Aron C.",
""
]
] | The anomalous conformal transformation law of the generalized entropy is found for dilaton gravity coupled to a 1+1 conformal matter sector with central charges $c = \tilde{c}$. (When $c \ne \tilde{c}$ the generalized entropy is not invariant under local Lorentz boosts.) It is shown that a certain second null derivativ... |
gr-qc/0106079 | Gladush | Valentin D. Gladush | Five-dimensional general relativity and Kaluza-Klein theory | 11 pages, LaTeX | Theor.Math.Phys.136:1312-1324,2003; Teor.Mat.Fiz.136:480-495,2003 | 10.1023/A:1025655400605 | null | gr-qc | null | We consider 5D spaces which admit the most symmetric 3D subspaces. 5D vacuum
Einstein equations are constructed and 5D analog of the mass function is found.
The corresponding conservation law leads to 5D analog of Birkhoff's theorem.
Hence the cylinder condition is dynamically implemented for the considered
spaces. F... | [
{
"created": "Tue, 26 Jun 2001 00:07:26 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Gladush",
"Valentin D.",
""
]
] | We consider 5D spaces which admit the most symmetric 3D subspaces. 5D vacuum Einstein equations are constructed and 5D analog of the mass function is found. The corresponding conservation law leads to 5D analog of Birkhoff's theorem. Hence the cylinder condition is dynamically implemented for the considered spaces. For... |
gr-qc/0612142 | Masaru Shibata | Masaru Shibata and Koji Uryu | Merger of black hole-neutron star binaries: nonspinning black hole case | 5 pages. Phys. Rev. D 74, 121503 (R) (2006) | Phys.Rev. D74 (2006) 121503 | 10.1103/PhysRevD.74.121503 | null | gr-qc | null | We perform a simulation for merger of a black hole (BH)-neutron star (NS)
binary in full general relativity preparing a quasicircular state as initial
condition. The BH is modeled by a moving puncture with no spin and the NS by
the $\Gamma$-law equation of state with $\Gamma=2$. Corotating velocity field
is assumed f... | [
{
"created": "Fri, 22 Dec 2006 06:14:24 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Shibata",
"Masaru",
""
],
[
"Uryu",
"Koji",
""
]
] | We perform a simulation for merger of a black hole (BH)-neutron star (NS) binary in full general relativity preparing a quasicircular state as initial condition. The BH is modeled by a moving puncture with no spin and the NS by the $\Gamma$-law equation of state with $\Gamma=2$. Corotating velocity field is assumed for... |
2301.00913 | Qing-Hua Zhu | Qing-Hua Zhu | Photon ring autocorrelations from gravitational fluctuations around a
black hole | v2: accepted version, 24 pages, 11 figures, 11pt | Phys. Rev. D 109, 064031 (2024) | 10.1103/PhysRevD.109.064031 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The images of supermassive black holes in M87 and our galaxy captured by the
Event Horizon Telescope (EHT) might open up a new way for exploring black hole
physics at the horizon scale. Theoretically, this could provide insights into
studying the emission sources around a black hole or the geometries of the
black hol... | [
{
"created": "Tue, 3 Jan 2023 01:09:36 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Mar 2024 14:32:54 GMT",
"version": "v2"
}
] | 2024-03-15 | [
[
"Zhu",
"Qing-Hua",
""
]
] | The images of supermassive black holes in M87 and our galaxy captured by the Event Horizon Telescope (EHT) might open up a new way for exploring black hole physics at the horizon scale. Theoretically, this could provide insights into studying the emission sources around a black hole or the geometries of the black hole ... |
1903.10115 | Bo Wang | Yang Zhang, Xuan Ye, Bo Wang | Adiabatic regularization and Green's function of a scalar field in de
Sitter space: Positive energy spectrum and no trace anomaly | 47 Pages, 10 Figures. Accepted for publication in SCIENCE CHINA
Physics, Mechanics & Astronomy | Science China Physics, Mechanics & Astronomy 63, 250411 (2020) | 10.1007/s11433-019-1451-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the conventional adiabatic regularization the vacuum ultraviolet
divergences of a quantum field in curved spacetime are removed by subtracting
the $k$-mode of the stress tensor to the 4th-order. For a scalar field in de
Sitter space, we find that the 4th-order regularized spectral energy density is
negative. Moreo... | [
{
"created": "Mon, 25 Mar 2019 03:31:17 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Apr 2019 12:25:28 GMT",
"version": "v2"
},
{
"created": "Sat, 28 Sep 2019 03:13:15 GMT",
"version": "v3"
},
{
"created": "Mon, 2 Mar 2020 14:53:46 GMT",
"version": "v4"
}
] | 2020-03-03 | [
[
"Zhang",
"Yang",
""
],
[
"Ye",
"Xuan",
""
],
[
"Wang",
"Bo",
""
]
] | In the conventional adiabatic regularization the vacuum ultraviolet divergences of a quantum field in curved spacetime are removed by subtracting the $k$-mode of the stress tensor to the 4th-order. For a scalar field in de Sitter space, we find that the 4th-order regularized spectral energy density is negative. Moreove... |
1607.01961 | Ramil Izmailov | Alexander A. Potapov, Ramil N. Izmailov and Kamal K. Nandi | Mass decomposition of SLACS lens galaxies in Weyl conformal gravity | 32 pages, 4 figures, 2 tables | Phys. Rev. D 93, 124070 (2016) | 10.1103/PhysRevD.93.124070 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study here, using the Mannheim-Kazanas solution of Weyl conformal theory,
the mass decomposition in the representative subsample of $57$ early-type
elliptical lens galaxies of the SLACS on board the HST. We begin by showing
that the solution need not be an exclusive solution of conformal gravity but
can also be vi... | [
{
"created": "Thu, 7 Jul 2016 11:18:11 GMT",
"version": "v1"
}
] | 2016-07-08 | [
[
"Potapov",
"Alexander A.",
""
],
[
"Izmailov",
"Ramil N.",
""
],
[
"Nandi",
"Kamal K.",
""
]
] | We study here, using the Mannheim-Kazanas solution of Weyl conformal theory, the mass decomposition in the representative subsample of $57$ early-type elliptical lens galaxies of the SLACS on board the HST. We begin by showing that the solution need not be an exclusive solution of conformal gravity but can also be view... |
gr-qc/0412003 | Chris Van Den Broeck | Abhay Ashtekar, Jonathan Engle and Chris Van Den Broeck | Quantum horizons and black hole entropy: Inclusion of distortion and
rotation | 9 pages | Class.Quant.Grav.22:L27-L34,2005 | 10.1088/0264-9381/22/4/L02 | IGPG 2004-11/9 | gr-qc hep-th | null | Equilibrium states of black holes can be modelled by isolated horizons. If
the intrinsic geometry is spherical, they are called type I while if it is
axi-symmetric, they are called type II. The detailed theory of geometry of
\emph{quantum} type I horizons and the calculation of their entropy can be
generalized to typ... | [
{
"created": "Wed, 1 Dec 2004 19:38:32 GMT",
"version": "v1"
}
] | 2010-11-05 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Engle",
"Jonathan",
""
],
[
"Broeck",
"Chris Van Den",
""
]
] | Equilibrium states of black holes can be modelled by isolated horizons. If the intrinsic geometry is spherical, they are called type I while if it is axi-symmetric, they are called type II. The detailed theory of geometry of \emph{quantum} type I horizons and the calculation of their entropy can be generalized to type ... |
1609.01685 | Jeremy Wachter | Jeremy M. Wachter and Ken D. Olum | Gravitational back reaction on piecewise linear cosmic string loops | 24 pages, 14 figures, updated to version accepted to PRD | Phys. Rev. D 95, 023519 (2017) | 10.1103/PhysRevD.95.023519 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the metric and affine connection due to a piecewise linear
cosmic string loop, and the effect of gravitational back reaction for the
Garfinkle-Vachaspati loop with four straight segments. As expected, back
reaction reduces the size of the loop, in accord with the energy going into
gravitational waves. Th... | [
{
"created": "Tue, 6 Sep 2016 18:25:22 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Dec 2016 20:38:52 GMT",
"version": "v2"
}
] | 2017-02-08 | [
[
"Wachter",
"Jeremy M.",
""
],
[
"Olum",
"Ken D.",
""
]
] | We calculate the metric and affine connection due to a piecewise linear cosmic string loop, and the effect of gravitational back reaction for the Garfinkle-Vachaspati loop with four straight segments. As expected, back reaction reduces the size of the loop, in accord with the energy going into gravitational waves. The ... |
gr-qc/9902078 | Garcia | L.C.Garcia de Andrade | Vacuumless torsion defects | Latex file (16K),submitted to Phys.Review D | null | null | null | gr-qc | null | Vacuumless defects in space-times with torsion may be obtained from vacuum
defects in spacetimes without torsion.This idea is applied to planar domain
walls and global monopoles.In the case of domain walls exponentially decaying
Higgs type potentials are obtained.In the case of global monopoles torsion
string type si... | [
{
"created": "Wed, 24 Feb 1999 17:20:12 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"de Andrade",
"L. C. Garcia",
""
]
] | Vacuumless defects in space-times with torsion may be obtained from vacuum defects in spacetimes without torsion.This idea is applied to planar domain walls and global monopoles.In the case of domain walls exponentially decaying Higgs type potentials are obtained.In the case of global monopoles torsion string type sing... |
0801.1375 | Francisco Lobo | Christian G. Boehmer, Tiberiu Harko, Francisco S.N. Lobo | Solar system tests of brane world models | 14 pages, to appear in Classical and Quantum Gravity. V2, minor
corrections and references added | Class.Quant.Grav.25:045015,2008 | 10.1088/0264-9381/25/4/045015 | null | gr-qc astro-ph hep-th | null | The classical tests of general relativity (perihelion precession, deflection
of light, and the radar echo delay) are considered for the Dadhich, Maartens,
Papadopoulos and Rezania (DMPR) solution of the spherically symmetric static
vacuum field equations in brane world models. For this solution the metric in
the vacu... | [
{
"created": "Wed, 9 Jan 2008 09:04:20 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Feb 2008 15:37:24 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | The classical tests of general relativity (perihelion precession, deflection of light, and the radar echo delay) are considered for the Dadhich, Maartens, Papadopoulos and Rezania (DMPR) solution of the spherically symmetric static vacuum field equations in brane world models. For this solution the metric in the vacuum... |
gr-qc/0605136 | Marcello Ortaggio | Jiri Podolsky, Marcello Ortaggio | Robinson-Trautman spacetimes in higher dimensions | 11 pages | Class.Quant.Grav. 23 (2006) 5785-5797 | 10.1088/0264-9381/23/20/002 | null | gr-qc hep-th | null | As an extension of the Robinson-Trautman solutions of D=4 general relativity,
we investigate higher dimensional spacetimes which admit a hypersurface
orthogonal, non-shearing and expanding geodesic null congruence. Einstein's
field equations with an arbitrary cosmological constant and possibly an aligned
pure radiati... | [
{
"created": "Fri, 26 May 2006 14:15:37 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Podolsky",
"Jiri",
""
],
[
"Ortaggio",
"Marcello",
""
]
] | As an extension of the Robinson-Trautman solutions of D=4 general relativity, we investigate higher dimensional spacetimes which admit a hypersurface orthogonal, non-shearing and expanding geodesic null congruence. Einstein's field equations with an arbitrary cosmological constant and possibly an aligned pure radiation... |
0708.3410 | Gabriel Bela Nagy | M. Holst, J. Kommemi, G. Nagy | Rough solutions of the Einstein constraint equations with nonconstant
mean curvature | 81 pages, 1 figure, Latex. Submitted for publication. Typos corrected | null | null | null | gr-qc | null | We consider the conformal decomposition of Einstein's constraint equations
introduced by Lichnerowicz and York, on a compact manifold with boundary. We
use order relations on appropriate Banach spaces to derive weak solution
generalizations of known sub- and super-solutions (barriers) for the
Hamiltonian constraint. ... | [
{
"created": "Fri, 24 Aug 2007 22:06:12 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Aug 2007 23:45:29 GMT",
"version": "v2"
}
] | 2007-08-28 | [
[
"Holst",
"M.",
""
],
[
"Kommemi",
"J.",
""
],
[
"Nagy",
"G.",
""
]
] | We consider the conformal decomposition of Einstein's constraint equations introduced by Lichnerowicz and York, on a compact manifold with boundary. We use order relations on appropriate Banach spaces to derive weak solution generalizations of known sub- and super-solutions (barriers) for the Hamiltonian constraint. Th... |
1001.3831 | Remo Garattini | Remo Garattini | Wormholes or Gravastars? | RevTeX 4, 18 pages, 2 Figs | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The one loop effective action in a Schwarzschild background is here used to
compute the Zero Point Energy (ZPE) which is compared to the same one generated
by a gravastar. We find that only when we set up a difference between ZPE in
these different background we can have an indication on which configuration is
favore... | [
{
"created": "Thu, 21 Jan 2010 15:57:39 GMT",
"version": "v1"
}
] | 2010-01-22 | [
[
"Garattini",
"Remo",
""
]
] | The one loop effective action in a Schwarzschild background is here used to compute the Zero Point Energy (ZPE) which is compared to the same one generated by a gravastar. We find that only when we set up a difference between ZPE in these different background we can have an indication on which configuration is favored.... |
1812.11122 | Kristina Giesel | Max Joseph Fahn, Kristina Giesel, Michael Kobler | Dynamical Properties of the Mukhanov-Sasaki Hamiltonian in the context
of adiabatic vacua and the Lewis-Riesenfeld invariant | 40 pages, 5 figures, minor changes: slightly rewrote the
introduction, extended the discussion on the infrared modes, corrected typos
and added references | Universe 2019, 5(7), 170 | 10.3390/universe5070170 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the method of the Lewis-Riesenfeld invariant to analyze the dynamical
properties of the Mukhanov-Sasaki Hamiltonian and, following this approach,
investigate whether we can obtain possible candidates for initial states in the
context of inflation considering a quasi-de Sitter spacetime. Our main interest
lies ... | [
{
"created": "Fri, 28 Dec 2018 17:35:10 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Jan 2019 17:35:44 GMT",
"version": "v2"
},
{
"created": "Fri, 14 Jun 2019 16:55:41 GMT",
"version": "v3"
}
] | 2022-12-05 | [
[
"Fahn",
"Max Joseph",
""
],
[
"Giesel",
"Kristina",
""
],
[
"Kobler",
"Michael",
""
]
] | We use the method of the Lewis-Riesenfeld invariant to analyze the dynamical properties of the Mukhanov-Sasaki Hamiltonian and, following this approach, investigate whether we can obtain possible candidates for initial states in the context of inflation considering a quasi-de Sitter spacetime. Our main interest lies in... |
1903.12119 | Sourabh Nampalliwar | Sourabh Nampalliwar, Shuo Xin, Shubham Srivastava, Askar B.
Abdikamalov, Dimitry Ayzenberg, Cosimo Bambi, Thomas Dauser, Javier A.
Garcia, Ashutosh Tripathi | Testing General Relativity with X-ray reflection spectroscopy: The
Konoplya-Rezzolla-Zhidenko parametrization | Minor updates. Published at Phys. Rev. D 102, 124071 (2020) | Phys. Rev. D 102, 124071 (2020) | 10.1103/PhysRevD.102.124071 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | X-ray reflection spectroscopy is a promising technique for testing general
relativity in the strong field regime, as it can be used to test the Kerr black
hole hypothesis. In this context, the parametrically deformed black hole
metrics proposed by Konoplya, Rezzolla \& Zhidenko (Phys. Rev. D93, 064015,
2016) form an ... | [
{
"created": "Thu, 28 Mar 2019 17:05:47 GMT",
"version": "v1"
},
{
"created": "Sun, 18 Oct 2020 17:26:07 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Jan 2021 11:50:08 GMT",
"version": "v3"
}
] | 2021-01-13 | [
[
"Nampalliwar",
"Sourabh",
""
],
[
"Xin",
"Shuo",
""
],
[
"Srivastava",
"Shubham",
""
],
[
"Abdikamalov",
"Askar B.",
""
],
[
"Ayzenberg",
"Dimitry",
""
],
[
"Bambi",
"Cosimo",
""
],
[
"Dauser",
"Thomas",
""... | X-ray reflection spectroscopy is a promising technique for testing general relativity in the strong field regime, as it can be used to test the Kerr black hole hypothesis. In this context, the parametrically deformed black hole metrics proposed by Konoplya, Rezzolla \& Zhidenko (Phys. Rev. D93, 064015, 2016) form an im... |
gr-qc/9909040 | Sharmanthie Fernando | Sharmanthie Fernando | Spinning Charged Solutions in 2+1 Dimensional Einstein-Maxwell-Dilaton
Gravity | 10 pages, LaTeX | Phys.Lett. B468 (1999) 201-207 | 10.1016/S0370-2693(99)01245-9 | UCTP116.99 | gr-qc hep-th | null | We report a new class of rotating charged solutions in 2+1 dimensions. These
solutions are obtained for Einstein-Maxwell gravity coupled to a dilaton field
with selfdual electromagnetic fields. The mass and the angular momentum of
these solutions computed at spatial infinity are finite. The class of solutions
conside... | [
{
"created": "Tue, 14 Sep 1999 00:31:48 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Fernando",
"Sharmanthie",
""
]
] | We report a new class of rotating charged solutions in 2+1 dimensions. These solutions are obtained for Einstein-Maxwell gravity coupled to a dilaton field with selfdual electromagnetic fields. The mass and the angular momentum of these solutions computed at spatial infinity are finite. The class of solutions considere... |
1608.07090 | Shibei Kong | Chao-Guang Huang, Shibei Kong | Hamiltonian Analysis of 3-Dimensional Connection Dynamics in Bondi-like
Coordinates | null | Commun. Theor. Phys. 68 (2017) 227 | 10.1088/0253-6102/68/2/227 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hamiltonian analysis for a 3-dimensional connection dynamics of
$\frak{so}(1,2)$, spanned by $\{L_{-+},L_{-2},L_{+2}\}$ instead of $\{L_{01},
L_{02}, L_{12}\}$, is first conducted in a Bondi-like coordinate system.The
symmetry of the system is clearly presented. A null coframe with 3 independent
variables and 9 c... | [
{
"created": "Thu, 25 Aug 2016 11:35:50 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Feb 2017 02:43:46 GMT",
"version": "v2"
},
{
"created": "Wed, 18 Jul 2018 10:14:43 GMT",
"version": "v3"
}
] | 2018-07-19 | [
[
"Huang",
"Chao-Guang",
""
],
[
"Kong",
"Shibei",
""
]
] | The Hamiltonian analysis for a 3-dimensional connection dynamics of $\frak{so}(1,2)$, spanned by $\{L_{-+},L_{-2},L_{+2}\}$ instead of $\{L_{01}, L_{02}, L_{12}\}$, is first conducted in a Bondi-like coordinate system.The symmetry of the system is clearly presented. A null coframe with 3 independent variables and 9 con... |
2212.07323 | Lorenzo Iorio | Lorenzo Iorio | Might the 2PN perihelion precession of Mercury become measurable in the
next future? | LaTex2e, 13 pages, 1 figure, no tables. Accepted for publication in
Universe | Universe 2023, 9(1), 37 | 10.3390/universe9010037 | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hermean average perihelion rate $\dot\omega^\mathrm{2PN}$, calculated to
the second post-Newtonian (2PN) order with the Gauss perturbing equations and
the osculating Keplerian orbital elements, ranges from $-18$ to $-4$
microarcseconds per century $\left(\mu\mathrm{as\,cty}^{-1}\right)$, depending
on the true ano... | [
{
"created": "Wed, 14 Dec 2022 16:40:41 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Jan 2023 01:37:01 GMT",
"version": "v2"
}
] | 2023-01-05 | [
[
"Iorio",
"Lorenzo",
""
]
] | The Hermean average perihelion rate $\dot\omega^\mathrm{2PN}$, calculated to the second post-Newtonian (2PN) order with the Gauss perturbing equations and the osculating Keplerian orbital elements, ranges from $-18$ to $-4$ microarcseconds per century $\left(\mu\mathrm{as\,cty}^{-1}\right)$, depending on the true anoma... |
0809.2659 | Stefan Hollands | Stefan Hollands and Akihiro Ishibashi | On the `Stationary Implies Axisymmetric' Theorem for Extremal Black
Holes in Higher Dimensions | 30pp, Latex, no figures | Commun.Math.Phys.291:403-441,2009 | 10.1007/s00220-009-0841-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | All known stationary black hole solutions in higher dimensions possess
additional rotational symmetries in addition to the stationary Killing field.
Also, for all known stationary solutions, the event horizon is a Killing
horizon, and the surface gravity is constant. In the case of non-degenerate
horizons (non-extrem... | [
{
"created": "Tue, 16 Sep 2008 08:27:10 GMT",
"version": "v1"
}
] | 2009-08-18 | [
[
"Hollands",
"Stefan",
""
],
[
"Ishibashi",
"Akihiro",
""
]
] | All known stationary black hole solutions in higher dimensions possess additional rotational symmetries in addition to the stationary Killing field. Also, for all known stationary solutions, the event horizon is a Killing horizon, and the surface gravity is constant. In the case of non-degenerate horizons (non-extremal... |
1003.5215 | Jane MacGibbon | Jane H. MacGibbon | Generalized Second Law Limits on the Variation of Fundamental Constants | Twelfth Marcel Grossmann Meeting, Paris 12 - 18 July 2009; 4 pages | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The theoretical maximum time variation in the electronic charge permitted by
the Generalized Second Law of Thermodynamics applied to black holes radiating
and accreting in the cosmic microwave background matches the measured
cosmological variation in the fine structure constant claimed by Webb et al..
Such black hole... | [
{
"created": "Fri, 26 Mar 2010 20:00:05 GMT",
"version": "v1"
}
] | 2010-04-02 | [
[
"MacGibbon",
"Jane H.",
""
]
] | The theoretical maximum time variation in the electronic charge permitted by the Generalized Second Law of Thermodynamics applied to black holes radiating and accreting in the cosmic microwave background matches the measured cosmological variation in the fine structure constant claimed by Webb et al.. Such black holes ... |
1806.08823 | Sumanta Chakraborty | Sumanta Chakraborty and Krishnamohan Parattu | Null boundary terms for Lanczos-Lovelock gravity | Editor's Choice; Published Version; 42 pages; For v4, affiliations
corrected; Erratum added for the same in the journal version | Gen. Rel. Grav. 51, 23 (2019) | 10.1007/s10714-019-2502-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive boundary terms appropriate for the general Lanczos-Lovelock action
on a null boundary, when Dirichlet boundary conditions are imposed. We believe
that these boundary terms have been derived for the first time in the
literature. In this derivation, we rely only on the structure of the boundary
variation of t... | [
{
"created": "Fri, 22 Jun 2018 19:04:11 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Sep 2018 00:15:58 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Feb 2019 00:29:14 GMT",
"version": "v3"
},
{
"created": "Tue, 26 Mar 2019 08:52:11 GMT",
"version": "v4"
}
] | 2019-03-27 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"Parattu",
"Krishnamohan",
""
]
] | We derive boundary terms appropriate for the general Lanczos-Lovelock action on a null boundary, when Dirichlet boundary conditions are imposed. We believe that these boundary terms have been derived for the first time in the literature. In this derivation, we rely only on the structure of the boundary variation of the... |
gr-qc/0701164 | Yosef Zlochower | Manuela Campanelli, Carlos O. Lousto, Yosef Zlochower, David Merritt | Large Merger Recoils and Spin Flips From Generic Black-Hole Binaries | 4 pages. Accepted for publication in ApJL | Astrophys.J.659:L5-L8,2007 | 10.1086/516712 | null | gr-qc astro-ph | null | We report the first results from evolutions of a generic black-hole binary,
i.e. a binary containing unequal mass black holes with misaligned spins. Our
configuration, which has a mass ratio of 2:1, consists of an initially
non-spinning hole orbiting a larger, rapidly spinning hole (specific spin a/m =
0.885), with t... | [
{
"created": "Mon, 29 Jan 2007 20:50:10 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Feb 2007 16:35:11 GMT",
"version": "v2"
},
{
"created": "Fri, 2 Mar 2007 15:14:55 GMT",
"version": "v3"
}
] | 2009-11-13 | [
[
"Campanelli",
"Manuela",
""
],
[
"Lousto",
"Carlos O.",
""
],
[
"Zlochower",
"Yosef",
""
],
[
"Merritt",
"David",
""
]
] | We report the first results from evolutions of a generic black-hole binary, i.e. a binary containing unequal mass black holes with misaligned spins. Our configuration, which has a mass ratio of 2:1, consists of an initially non-spinning hole orbiting a larger, rapidly spinning hole (specific spin a/m = 0.885), with the... |
2204.11616 | Rituparna Mandal | Rituparna Mandal and Sunandan Gangopadhyay | Black hole thermodynamics in asymptotically safe gravity | 18 pages, 9 figures, comments are welcome | null | 10.1007/s10714-022-03045-9 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We have investigated the black hole thermodynamics and the phase transition
for renormalized group improved asymptotically safe Schwarzschild black hole.
This geometry takes into account the quantum gravitational correction in the
running gravitational constant identifying $G(r) \equiv G(k=k(r))$. We studied
various ... | [
{
"created": "Fri, 22 Apr 2022 09:40:21 GMT",
"version": "v1"
}
] | 2022-12-21 | [
[
"Mandal",
"Rituparna",
""
],
[
"Gangopadhyay",
"Sunandan",
""
]
] | We have investigated the black hole thermodynamics and the phase transition for renormalized group improved asymptotically safe Schwarzschild black hole. This geometry takes into account the quantum gravitational correction in the running gravitational constant identifying $G(r) \equiv G(k=k(r))$. We studied various th... |
0812.1981 | Franco Fiorini | Rafael Ferraro and Franco Fiorini | On Born-Infeld Gravity in Weitzenbock spacetime | 8 pages, 1 figure. Accepted for publication in Phys. Rev. D | Phys.Rev.D78:124019,2008 | 10.1103/PhysRevD.78.124019 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the Teleparallel Equivalent of General Relativity formulated in
Weitzenb\"{o}ck spacetime, we thoroughly explore a kind of Born-Infeld regular
gravity leading to second order field equations for the vielbein components. We
explicitly solve the equations of motion for two examples: the extended BTZ
black hole, w... | [
{
"created": "Wed, 10 Dec 2008 17:37:22 GMT",
"version": "v1"
}
] | 2009-01-08 | [
[
"Ferraro",
"Rafael",
""
],
[
"Fiorini",
"Franco",
""
]
] | Using the Teleparallel Equivalent of General Relativity formulated in Weitzenb\"{o}ck spacetime, we thoroughly explore a kind of Born-Infeld regular gravity leading to second order field equations for the vielbein components. We explicitly solve the equations of motion for two examples: the extended BTZ black hole, whi... |
0811.1129 | Iver Brevik | I. Brevik and O. Gorbunova | A Brief Review of the Singularities in 4D and 5D Viscous Cosmologies
Near the Future Singularity | 11 pages latex, no figures. Contribution to the anniversary volume
"The Problems of Modern Cosmology", on the occasion of the 50th birthday of
Prof. S. D. Odintsov. Editor: Prof. P. M. Lavrov, Tomsk State Pedagogical
University | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Analytic properties of physical quantities in the cosmic fluid such as energy
density \rho(t) and Hubble parameter H(t) are investigated near the future
singularity (Big Rip). Both 4D and 5D cosmologies are considered (the
Randall-Sundrum II model in the 5D case), and the fluid is assumed to possess a
bulk viscosity ... | [
{
"created": "Fri, 7 Nov 2008 12:15:07 GMT",
"version": "v1"
}
] | 2008-11-10 | [
[
"Brevik",
"I.",
""
],
[
"Gorbunova",
"O.",
""
]
] | Analytic properties of physical quantities in the cosmic fluid such as energy density \rho(t) and Hubble parameter H(t) are investigated near the future singularity (Big Rip). Both 4D and 5D cosmologies are considered (the Randall-Sundrum II model in the 5D case), and the fluid is assumed to possess a bulk viscosity \z... |
1410.2765 | Xavier Calmet | Xavier Calmet and Matthias Keller | Cosmological Evolution of Fundamental Constants: From Theory to
Experiment | Invited paper to the Special Issue: "Fundamental Constants in Physics
and Their Time Variation" (Modern Physics Letters A, Guest Ed. Joan Sol\`a) | Mod. Phys. Lett. A, Vol. 30, No. 22 (2015) 154002822 | 10.1142/S0217732315400283 | null | gr-qc astro-ph.CO physics.atom-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we discuss a possible cosmological time evolution of
fundamental constants from the theoretical and experimental point of views. On
the theoretical side, we explain that such a cosmological time evolution is
actually something very natural which can be described by mechanisms similar to
those used to ex... | [
{
"created": "Fri, 10 Oct 2014 12:38:04 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Dec 2014 08:42:39 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Calmet",
"Xavier",
""
],
[
"Keller",
"Matthias",
""
]
] | In this paper we discuss a possible cosmological time evolution of fundamental constants from the theoretical and experimental point of views. On the theoretical side, we explain that such a cosmological time evolution is actually something very natural which can be described by mechanisms similar to those used to expl... |
1707.08442 | Binaya Bishi Kumar | G. P. Singh, Binaya K. Bishi | Bulk viscous cosmological model in Brans Dicke theory with new form of
time varying deceleration parameter | 16 pages, 24 figures, Accepted in Advances in high energy physics,
2017 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we have presented FRW cosmological model in the framework of
Brans-Dicke theory. This paper deals with a new proposed form of deceleration
parameter and cosmological constant. The effect of bulk viscosity is also
studied in the presence of modified Chaplygin gas equation of state. Further,
we have dis... | [
{
"created": "Tue, 25 Jul 2017 15:05:18 GMT",
"version": "v1"
}
] | 2017-07-27 | [
[
"Singh",
"G. P.",
""
],
[
"Bishi",
"Binaya K.",
""
]
] | In this article we have presented FRW cosmological model in the framework of Brans-Dicke theory. This paper deals with a new proposed form of deceleration parameter and cosmological constant. The effect of bulk viscosity is also studied in the presence of modified Chaplygin gas equation of state. Further, we have discu... |
1803.04106 | Jessica Santiago | Jessica Santiago (Victoria University of Wellington) and Matt Visser
(Victoria University of Wellington) | Tolman temperature gradients in a gravitational field | 9 pages | European Journal of Physics 40 #2 (2019) 025604 | 10.1088/1361-6404/aaff1c | null | gr-qc cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Tolman's relation for the temperature gradient in an equilibrium
self-gravitating general relativistic fluid is broadly accepted within the
general relativity community. However, the concept of temperature gradients in
thermal equilibrium continues to cause confusion in other branches of physics,
since it contradicts... | [
{
"created": "Mon, 12 Mar 2018 03:38:18 GMT",
"version": "v1"
}
] | 2019-03-01 | [
[
"Santiago",
"Jessica",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | Tolman's relation for the temperature gradient in an equilibrium self-gravitating general relativistic fluid is broadly accepted within the general relativity community. However, the concept of temperature gradients in thermal equilibrium continues to cause confusion in other branches of physics, since it contradicts n... |
gr-qc/9308024 | Rainer Mueller | Claus Kiefer, Rainer Mueller, and Tejinder P. Singh | Quantum Gravity and Non-unitarity in Black Hole Evaporation | 6 pages, Latex, ZU-TH 25/93 | Mod.Phys.Lett.A9:2661-2670,1994 | 10.1142/S0217732394002501 | null | gr-qc hep-th | null | We discuss the relevance of quantum gravitational corrections to the
functional Schr\"odinger equation for the information loss paradox in black
hole evaporation. These corrections are found from the Wheeler-DeWitt equation
through a semiclassical expansion scheme. The dominant contribution in the
final evaporation s... | [
{
"created": "Mon, 23 Aug 1993 11:47:19 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Kiefer",
"Claus",
""
],
[
"Mueller",
"Rainer",
""
],
[
"Singh",
"Tejinder P.",
""
]
] | We discuss the relevance of quantum gravitational corrections to the functional Schr\"odinger equation for the information loss paradox in black hole evaporation. These corrections are found from the Wheeler-DeWitt equation through a semiclassical expansion scheme. The dominant contribution in the final evaporation sta... |
1208.5327 | Kaushik Bhattacharya | Prashant Kumar, Kaushik Bhattacharya, Tapobrata Sarkar | Geodesic flows and their deformations in Bertrand spacetimes | 3 pages, 2 figures, Latex file. This is a talk given in the 13th
Marcel Grossmann meeting held in Stockholm university from 1st-7th July 2012.
The new submission is a shortened version of the previous version | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/3.0/ | In this article we will discuss some features of a particular spacetime
called Bertrand space-time of Type II (BST-II). The talk discusses about the
energy conditions and the ESR parameters in this spacetime.
| [
{
"created": "Mon, 27 Aug 2012 08:33:26 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Nov 2012 13:10:37 GMT",
"version": "v2"
}
] | 2012-11-22 | [
[
"Kumar",
"Prashant",
""
],
[
"Bhattacharya",
"Kaushik",
""
],
[
"Sarkar",
"Tapobrata",
""
]
] | In this article we will discuss some features of a particular spacetime called Bertrand space-time of Type II (BST-II). The talk discusses about the energy conditions and the ESR parameters in this spacetime. |
2102.12515 | S. N Sajadi | B. Bahrami Asl, S. H. Hendi and S. N. Sajadi | Complexity Conjecture of Regular Electric Black Holes | 26 pages, 13 figures | null | 10.1103/PhysRevD.104.104034 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Recently, the action growth rate of a variety of four-dimensional regular
magnetic black holes in F frame is obtained in [1]. Here, we study the action
growth rate of a four-dimensional regular electric black hole in P frame that
is the Legendre transformation of F frame. We also investigate the action
growth rates o... | [
{
"created": "Wed, 24 Feb 2021 19:14:04 GMT",
"version": "v1"
}
] | 2021-11-24 | [
[
"Asl",
"B. Bahrami",
""
],
[
"Hendi",
"S. H.",
""
],
[
"Sajadi",
"S. N.",
""
]
] | Recently, the action growth rate of a variety of four-dimensional regular magnetic black holes in F frame is obtained in [1]. Here, we study the action growth rate of a four-dimensional regular electric black hole in P frame that is the Legendre transformation of F frame. We also investigate the action growth rates of ... |
gr-qc/9705058 | Luigi Mangiarotti | G.Giachetta, L.Mangiarotti, G.Sardanashvily | Universal Spin Structure in Gauge Gravitation Theory | 39 pages, LaTex | null | null | null | gr-qc dg-ga hep-th math.DG | null | Building on the universal covering group of the general linear group, we
introduce the composite spinor bundle whose subbundles are Lorentz spin
structures associated with different gravitational fields. General covariant
transformations of this composite spinor bundle are canonically defined.
| [
{
"created": "Wed, 21 May 1997 19:53:25 GMT",
"version": "v1"
}
] | 2008-02-03 | [
[
"Giachetta",
"G.",
""
],
[
"Mangiarotti",
"L.",
""
],
[
"Sardanashvily",
"G.",
""
]
] | Building on the universal covering group of the general linear group, we introduce the composite spinor bundle whose subbundles are Lorentz spin structures associated with different gravitational fields. General covariant transformations of this composite spinor bundle are canonically defined. |
gr-qc/0206037 | Thomas Thiemann | Thomas Thiemann | Complexifier Coherent States for Quantum General Relativity | Latex, 54 p., no figures | Class.Quant.Grav. 23 (2006) 2063-2118 | 10.1088/0264-9381/23/6/013 | AEI-2002-045 | gr-qc hep-th math-ph math.MP quant-ph | null | Recently, substantial amount of activity in Quantum General Relativity (QGR)
has focussed on the semiclassical analysis of the theory. In this paper we want
to comment on two such developments: 1) Polymer-like states for Maxwell theory
and linearized gravity constructed by Varadarajan which use much of the Hilbert
sp... | [
{
"created": "Thu, 13 Jun 2002 11:19:34 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Thiemann",
"Thomas",
""
]
] | Recently, substantial amount of activity in Quantum General Relativity (QGR) has focussed on the semiclassical analysis of the theory. In this paper we want to comment on two such developments: 1) Polymer-like states for Maxwell theory and linearized gravity constructed by Varadarajan which use much of the Hilbert spac... |
gr-qc/9611008 | Robert Mann | R.B. Mann and T. Ohta | Exact Solution for the Metric and the Motion of Two Bodies in (1+1)
Dimensional Gravity | 34 pages, LaTeX, 16 figures | Phys.Rev. D55 (1997) 4723-4747 | 10.1103/PhysRevD.55.4723 | WATPHYS TH-96/16 | gr-qc | null | We present the exact solution of two-body motion in (1+1) dimensional dilaton
gravity by solving the constraint equations in the canonical formalism. The
determining equation of the Hamiltonian is derived in a transcendental form and
the Hamiltonian is expressed for the system of two identical particles in terms
of t... | [
{
"created": "Mon, 4 Nov 1996 21:27:36 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Mann",
"R. B.",
""
],
[
"Ohta",
"T.",
""
]
] | We present the exact solution of two-body motion in (1+1) dimensional dilaton gravity by solving the constraint equations in the canonical formalism. The determining equation of the Hamiltonian is derived in a transcendental form and the Hamiltonian is expressed for the system of two identical particles in terms of the... |
2404.01355 | Mrinnoy Gohain | Mrinnoy M. Gohain and Kalyan Bhuyan | Emergent Cosmology in 4D Einstein Gauss Bonnet Theory of Gravity | 12 pages, 2 figures, Accepted in Physica Scripta | Phys. Scr. 99 (2024) 075306 | 10.1088/1402-4896/ad5238 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, in an FLRW background and a perfect fluid equation of state,
we explore the possibility of the realization of an emergent scenario in a 4D
regularized extension of Einstein-Gauss-Bonnet gravity, with the field
equations particularly expressed in terms of scalar-tensor degrees of freedom.
By assuming no... | [
{
"created": "Mon, 1 Apr 2024 08:14:15 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Apr 2024 08:43:35 GMT",
"version": "v2"
},
{
"created": "Thu, 30 May 2024 15:36:10 GMT",
"version": "v3"
}
] | 2024-06-12 | [
[
"Gohain",
"Mrinnoy M.",
""
],
[
"Bhuyan",
"Kalyan",
""
]
] | In this paper, in an FLRW background and a perfect fluid equation of state, we explore the possibility of the realization of an emergent scenario in a 4D regularized extension of Einstein-Gauss-Bonnet gravity, with the field equations particularly expressed in terms of scalar-tensor degrees of freedom. By assuming non-... |
1702.04973 | Claus Kiefer | Claus Kiefer and Branislav Nikolic | Conformal and Weyl-Einstein gravity: Classical geometrodynamics | 27 pages, conceptual clarifications added | Phys. Rev. D 95, 084018 (2017) | 10.1103/PhysRevD.95.084018 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new formulation for the canonical approach to conformal
(Weyl-squared) gravity and its extension by the Einstein-Hilbert term and a
nonminimally coupled scalar field. For this purpose we use a unimodular
decomposition of the three-metric and introduce unimodular-conformal canonical
variables. The importa... | [
{
"created": "Thu, 16 Feb 2017 14:13:24 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Apr 2017 15:28:14 GMT",
"version": "v2"
}
] | 2017-04-19 | [
[
"Kiefer",
"Claus",
""
],
[
"Nikolic",
"Branislav",
""
]
] | We present a new formulation for the canonical approach to conformal (Weyl-squared) gravity and its extension by the Einstein-Hilbert term and a nonminimally coupled scalar field. For this purpose we use a unimodular decomposition of the three-metric and introduce unimodular-conformal canonical variables. The important... |
gr-qc/9604052 | Larry Ford | L.H. Ford and N. F. Svaiter | Gravitons and Lightcone Fluctuations II: Correlation Functions | 16 pages and two figures, uses epsf | Phys.Rev.D54:2640-2646,1996 | 10.1103/PhysRevD.54.2640 | TUTP-96-1 | gr-qc | null | A model of a fluctuating lightcone due to a bath of gravitons is further
investigated. The flight times of photons between a source and a detector may
be either longer or shorter than the light propagation time in the background
classical spacetime, and will form a Gaussian distribution centered around the
classical ... | [
{
"created": "Sat, 27 Apr 1996 17:06:27 GMT",
"version": "v1"
}
] | 2011-09-09 | [
[
"Ford",
"L. H.",
""
],
[
"Svaiter",
"N. F.",
""
]
] | A model of a fluctuating lightcone due to a bath of gravitons is further investigated. The flight times of photons between a source and a detector may be either longer or shorter than the light propagation time in the background classical spacetime, and will form a Gaussian distribution centered around the classical fl... |
1805.00026 | Hideki Maeda | Hideki Maeda, Robert Svarc, Jiri Podolsky | Decreasing entropy of dynamical black holes in critical gravity | 11 pages, no figure, 2 tables; v2, revised version with more
references; v3, final version to appear in JHEP | JHEP 1806 (2018) 118 | 10.1007/JHEP06(2018)118 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Critical gravity is a quadratic curvature gravity in four dimensions which is
ghost-free around the AdS background. Constructing a Vaidya-type exact
solution, we show that the area of a black hole defined by a future outer
trapping horizon can shrink by injecting a charged null fluid with positive
energy density, so ... | [
{
"created": "Mon, 30 Apr 2018 18:00:02 GMT",
"version": "v1"
},
{
"created": "Thu, 10 May 2018 12:11:24 GMT",
"version": "v2"
},
{
"created": "Thu, 28 Jun 2018 04:07:33 GMT",
"version": "v3"
}
] | 2018-08-01 | [
[
"Maeda",
"Hideki",
""
],
[
"Svarc",
"Robert",
""
],
[
"Podolsky",
"Jiri",
""
]
] | Critical gravity is a quadratic curvature gravity in four dimensions which is ghost-free around the AdS background. Constructing a Vaidya-type exact solution, we show that the area of a black hole defined by a future outer trapping horizon can shrink by injecting a charged null fluid with positive energy density, so th... |
2402.19397 | Lavinia Heisenberg | Fabio D'Ambrosio, Francesco Gozzini, Lavinia Heisenberg, Henri
Inchausp\'e, David Maibach, Jann Zosso | Testing gravitational waveforms in full General Relativity | 22 pages, 15 figures, Comments are welcome | null | null | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a comprehensive analysis of state-of-the-art waveform models,
focusing on their predictions concerning kick velocity and inferred
gravitational wave memory. In our investigation we assess the accuracy of
waveform models using energy-momentum balance laws, which were derived in the
framework of full, non-li... | [
{
"created": "Thu, 29 Feb 2024 17:55:26 GMT",
"version": "v1"
}
] | 2024-03-01 | [
[
"D'Ambrosio",
"Fabio",
""
],
[
"Gozzini",
"Francesco",
""
],
[
"Heisenberg",
"Lavinia",
""
],
[
"Inchauspé",
"Henri",
""
],
[
"Maibach",
"David",
""
],
[
"Zosso",
"Jann",
""
]
] | We perform a comprehensive analysis of state-of-the-art waveform models, focusing on their predictions concerning kick velocity and inferred gravitational wave memory. In our investigation we assess the accuracy of waveform models using energy-momentum balance laws, which were derived in the framework of full, non-line... |
1712.06601 | Moritz Platscher | Kevin Max, Moritz Platscher, Juri Smirnov | Decoherence of Gravitational Wave Oscillations in Bigravity | 7 pages, 2 figures; v2: extended discussion on the importance of the
Vainshtein mechanism, content matches published version | Phys. Rev. D 97, 064009 (2018) | 10.1103/PhysRevD.97.064009 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Following up on our recent study, we consider the regime of graviton masses
and gravitational wave propagation distances at which decoherence of the wave
packets plays a major role for phenomenology. This regime is of particular
interest, as it can lead to very striking phenomena of echo events in the
gravitational w... | [
{
"created": "Mon, 18 Dec 2017 19:00:01 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Mar 2018 13:32:33 GMT",
"version": "v2"
}
] | 2018-03-21 | [
[
"Max",
"Kevin",
""
],
[
"Platscher",
"Moritz",
""
],
[
"Smirnov",
"Juri",
""
]
] | Following up on our recent study, we consider the regime of graviton masses and gravitational wave propagation distances at which decoherence of the wave packets plays a major role for phenomenology. This regime is of particular interest, as it can lead to very striking phenomena of echo events in the gravitational wav... |
0810.0199 | Lorenzo Iorio | Lorenzo Iorio, Matteo Luca Ruggiero | Gravitomagnetic effects in Kerr-de Sitter space-time | Latex2e, 18 pages, 1 table, no figures. To appear in Journal of
Cosmology and Astroparticle Physics (JCAP) | JCAP03(2009)024 | 10.1088/1475-7516/2009/03/024 | null | gr-qc astro-ph hep-ph physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explicitly worked out the orbital effects induced on the trajectory of a
test particle by the the weak-field approximation of the Kerr-de Sitter metric.
It results that the node, the pericentre and the mean anomaly undergo secular
precessions proportional to k, which is a measure of the non linearity of the
theory... | [
{
"created": "Wed, 1 Oct 2008 15:49:05 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Oct 2008 15:52:51 GMT",
"version": "v2"
},
{
"created": "Mon, 2 Mar 2009 09:04:37 GMT",
"version": "v3"
}
] | 2009-03-18 | [
[
"Iorio",
"Lorenzo",
""
],
[
"Ruggiero",
"Matteo Luca",
""
]
] | We explicitly worked out the orbital effects induced on the trajectory of a test particle by the the weak-field approximation of the Kerr-de Sitter metric. It results that the node, the pericentre and the mean anomaly undergo secular precessions proportional to k, which is a measure of the non linearity of the theory. ... |
gr-qc/0504071 | Neil J. Cornish | Seth E. Timpano, Louis J. Rubbo and Neil J. Cornish | Characterizing the Galactic Gravitational Wave Background with LISA | 32 pages, 14 figures. Version to appear in PRD | Phys.Rev. D73 (2006) 122001 | 10.1103/PhysRevD.73.122001 | null | gr-qc astro-ph | null | We present a Monte Carlo simulation for the response of the Laser
Interferometer Space Antenna (LISA) to the galactic gravitational wave
background. The simulated data streams are used to estimate the number and type
of binary systems that will be individually resolved in a 1-year power
spectrum. We find that the bac... | [
{
"created": "Fri, 15 Apr 2005 19:30:41 GMT",
"version": "v1"
},
{
"created": "Sat, 16 Apr 2005 19:01:28 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Dec 2005 04:27:34 GMT",
"version": "v3"
},
{
"created": "Fri, 7 Apr 2006 17:09:28 GMT",
"version": "v4"
}
] | 2009-11-11 | [
[
"Timpano",
"Seth E.",
""
],
[
"Rubbo",
"Louis J.",
""
],
[
"Cornish",
"Neil J.",
""
]
] | We present a Monte Carlo simulation for the response of the Laser Interferometer Space Antenna (LISA) to the galactic gravitational wave background. The simulated data streams are used to estimate the number and type of binary systems that will be individually resolved in a 1-year power spectrum. We find that the backg... |
1802.00329 | Massimiliano Rinaldi | Marco Calz\`a, Massimiliano Rinaldi, Lorenzo Sebastiani | A special class of solutions in $F(R)$-gravity | Minor typos corrected, references added. Version accepted for
publication in the European Physical Journal C | null | 10.1140/epjc/s10052-018-5681-8 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a special class of vacuum $F(R)$-modified gravity models. The
form of their Lagrangian is such that the field equations are trivially
satisfied when the Ricci scalar is constant. There are many interesting
$F(R)$-models for inflation and dark energy that fall in this class. However,
little is known outsid... | [
{
"created": "Wed, 31 Jan 2018 09:44:50 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Feb 2018 06:21:06 GMT",
"version": "v2"
}
] | 2018-04-04 | [
[
"Calzà",
"Marco",
""
],
[
"Rinaldi",
"Massimiliano",
""
],
[
"Sebastiani",
"Lorenzo",
""
]
] | We consider a special class of vacuum $F(R)$-modified gravity models. The form of their Lagrangian is such that the field equations are trivially satisfied when the Ricci scalar is constant. There are many interesting $F(R)$-models for inflation and dark energy that fall in this class. However, little is known outside ... |
0707.2089 | Israel Quiros | Tame Gonzalez, Israel Quiros | Exact models with non-minimal interaction between dark matter and
(either phantom or quintessence) dark energy | 15 pages, 2 eps figures. Several bibliographic references added. Some
new comments and acknowledgements also added | Class.Quant.Grav.25:175019,2008 | 10.1088/0264-9381/25/17/175019 | null | gr-qc | null | A method for deriving Friedmann-Robertson-Walker (FRW) solutions developed in
Int. J. Mod. Phys. D{\bf 5}(1996)71-84, is generalized to account for models
with non-minimal coupling between the dark energy and the dark matter. New
quintessence and phantom (flat) FRW solutions are found. Their physical
significance is ... | [
{
"created": "Fri, 13 Jul 2007 20:45:19 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Jan 2008 16:17:20 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Gonzalez",
"Tame",
""
],
[
"Quiros",
"Israel",
""
]
] | A method for deriving Friedmann-Robertson-Walker (FRW) solutions developed in Int. J. Mod. Phys. D{\bf 5}(1996)71-84, is generalized to account for models with non-minimal coupling between the dark energy and the dark matter. New quintessence and phantom (flat) FRW solutions are found. Their physical significance is di... |
2301.12319 | Tyler McMaken | Tyler McMaken and Andrew J.S. Hamilton | Hawking radiation inside a charged black hole | 26 pages, 8 figures, 1 appendix | Phys. Rev. D 107, 085010 (2023) | 10.1103/PhysRevD.107.085010 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Here we analyze the Hawking radiation detected by an inertial observer in an
arbitrary position in a Reissner-Nordstr\"om spacetime, with special emphasis
on the asymptotic behavior of the Hawking spectrum as an observer approaches
the inner or outer horizon. Two different methods are used to analyze the
Hawking flux... | [
{
"created": "Sun, 29 Jan 2023 02:04:28 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Apr 2023 15:57:01 GMT",
"version": "v2"
}
] | 2023-04-14 | [
[
"McMaken",
"Tyler",
""
],
[
"Hamilton",
"Andrew J. S.",
""
]
] | Here we analyze the Hawking radiation detected by an inertial observer in an arbitrary position in a Reissner-Nordstr\"om spacetime, with special emphasis on the asymptotic behavior of the Hawking spectrum as an observer approaches the inner or outer horizon. Two different methods are used to analyze the Hawking flux: ... |
2404.13887 | Bertrand Chauvineau | Bertrand Chauvineau, Hoang Ky Nguyen | The complete exterior spacetime of spherical Brans-Dicke stars | 1 figure. Correcting a typo in Eq (19) (an unjustified 4*pi factor
has been removed) | Phys. Lett. B 855, 138803 (2024) | 10.1016/j.physletb.2024.138803 | null | gr-qc astro-ph.HE math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the complete expression for the Brans Class I exterior spacetime
explicitly in terms of the energy and pressures profiles of a stationary
spherisymmetric gravity source. This novel and generic expression is achieved
in a parsimonious manner, requiring only a subset of the Brans-Dicke field
equation and the ... | [
{
"created": "Mon, 22 Apr 2024 05:23:53 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Jun 2024 14:08:26 GMT",
"version": "v2"
},
{
"created": "Thu, 27 Jun 2024 08:36:24 GMT",
"version": "v3"
}
] | 2024-06-28 | [
[
"Chauvineau",
"Bertrand",
""
],
[
"Nguyen",
"Hoang Ky",
""
]
] | We derive the complete expression for the Brans Class I exterior spacetime explicitly in terms of the energy and pressures profiles of a stationary spherisymmetric gravity source. This novel and generic expression is achieved in a parsimonious manner, requiring only a subset of the Brans-Dicke field equation and the sc... |
1103.5543 | Barun Majumder | Barun Majumder | Quantum Scalar-metric Cosmology with Chaplygin gas | 13 pages, 6 figures | Phys.Lett.B697:101-106,2011 | 10.1016/j.physletb.2011.01.054 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A spatially flat Friedmann-Robertson-Walker(FRW) cosmological model with
generalized Chaplygin gas is studied in the context of scalar-metric
formulation of cosmology. Schutz's mechanism for the perfect fluid is applied
with generalized Chaplygin gas and the classical and quantum dynamics for this
model is studied. I... | [
{
"created": "Tue, 29 Mar 2011 05:00:20 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Mar 2011 03:47:27 GMT",
"version": "v2"
}
] | 2011-06-24 | [
[
"Majumder",
"Barun",
""
]
] | A spatially flat Friedmann-Robertson-Walker(FRW) cosmological model with generalized Chaplygin gas is studied in the context of scalar-metric formulation of cosmology. Schutz's mechanism for the perfect fluid is applied with generalized Chaplygin gas and the classical and quantum dynamics for this model is studied. It ... |
2001.10307 | Snehasish Bhattacharjee | Snehasish Bhattacharjee | Effects of magnetic field on the radiation pressure dominated discs
around neutron stars | 14 pages, 9 figures, accepted in Modern Physics Letters A | Modern Physics Letters A, 35 (15), 2050125 (2020) | 10.1142/S0217732320501254 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We supplement the analytic solution obtained by Matthews O. M., et. al.,
2005, MNRAS, \textbf{356}, 66 to investigate the steady-state structure of
radiation pressure dominated disc under the influence of a stellar magnetic
field which deploys a torque. The solutions converge to the non-magnetic
Shakura N. I., Sunyae... | [
{
"created": "Tue, 28 Jan 2020 13:21:00 GMT",
"version": "v1"
}
] | 2020-05-26 | [
[
"Bhattacharjee",
"Snehasish",
""
]
] | We supplement the analytic solution obtained by Matthews O. M., et. al., 2005, MNRAS, \textbf{356}, 66 to investigate the steady-state structure of radiation pressure dominated disc under the influence of a stellar magnetic field which deploys a torque. The solutions converge to the non-magnetic Shakura N. I., Sunyaev ... |
gr-qc/0412054 | Marcelo S. Berman | Marcelo Samuel Berman | Brief History of Black-Holes | 3 pages including front page.Replaced version consists of a slightly
reworded text | null | null | null | gr-qc | null | We show that the gravitational collapse of a black-hole terminates in the
birth of a white-hole, due to repulsive gravitation (antigravitation); in
particular, the infinite energy density singularity does NOT occur.
| [
{
"created": "Sun, 12 Dec 2004 14:29:30 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Dec 2004 22:43:45 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Berman",
"Marcelo Samuel",
""
]
] | We show that the gravitational collapse of a black-hole terminates in the birth of a white-hole, due to repulsive gravitation (antigravitation); in particular, the infinite energy density singularity does NOT occur. |
1612.05117 | F. S. Guzman | J. A. Gonz\'alez, F. S. Guzm\'an | Accretion of a Phantom Scalar Field by a Black Hole: restrictions on the
field distribution | 5 pages, 18 eps figures | Phys. Rev. D 94, 104012 (2016) | 10.1103/PhysRevD.94.104012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using numerical simulations we study the accretion of a phantom scalar field
into a black hole and track the black hole horizon shrinking process. We
integrate the amount of field left outside the black hole during the process in
terms of the properties of the wave packet sent toward the black hole. Our
results indic... | [
{
"created": "Thu, 15 Dec 2016 15:47:16 GMT",
"version": "v1"
}
] | 2016-12-16 | [
[
"González",
"J. A.",
""
],
[
"Guzmán",
"F. S.",
""
]
] | Using numerical simulations we study the accretion of a phantom scalar field into a black hole and track the black hole horizon shrinking process. We integrate the amount of field left outside the black hole during the process in terms of the properties of the wave packet sent toward the black hole. Our results indicat... |
1211.3448 | Peter Kazinski | P.O. Kazinski | Propagator of a scalar field on a stationary slowly varying
gravitational background | 45 pp., 1 fig; some misprints corrected, references and appendix
added; exposition improved, app. C added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The propagator of a scalar field on a stationary slowly varying in space
gravitational background is derived retaining only the second derivatives of
the metric. The corresponding one-loop effective action is constructed. The
propagator and the effective action turn out to depend nontrivially on the
Killing vector de... | [
{
"created": "Wed, 14 Nov 2012 22:25:16 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Nov 2012 11:10:46 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Mar 2013 17:04:19 GMT",
"version": "v3"
}
] | 2013-03-13 | [
[
"Kazinski",
"P. O.",
""
]
] | The propagator of a scalar field on a stationary slowly varying in space gravitational background is derived retaining only the second derivatives of the metric. The corresponding one-loop effective action is constructed. The propagator and the effective action turn out to depend nontrivially on the Killing vector defi... |
1507.05036 | Cosimo Bambi | Cosimo Bambi | Testing the Kerr Paradigm with X-ray Observations | 6 pages, 3 figures. Talk given at the "14th Marcel Grossmann Meeting"
(12-18 July 2015, Rome, Italy). To appear in the conference proceedings | null | 10.1142/9789813226609_0143 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Astrophysical black hole candidates are thought to be the Kerr black holes of
general relativity, but the actual nature of these objects has still to be
confirmed. The continuum-fitting and the iron line methods are currently the
only available techniques to probe the spacetime geometry around these bodies
and test t... | [
{
"created": "Fri, 17 Jul 2015 17:20:30 GMT",
"version": "v1"
}
] | 2017-12-19 | [
[
"Bambi",
"Cosimo",
""
]
] | Astrophysical black hole candidates are thought to be the Kerr black holes of general relativity, but the actual nature of these objects has still to be confirmed. The continuum-fitting and the iron line methods are currently the only available techniques to probe the spacetime geometry around these bodies and test the... |
1509.04702 | Marc Casals | Marc Casals and Adrian C. Ottewill | High-order Tail in Schwarzschild Space-time | 39 pages, 10 figures. Small improvements throughout | Phys. Rev. D 92, 124055 (2015) | 10.1103/PhysRevD.92.124055 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an analysis of the behaviour at late-times of linear field
perturbations of a Schwarzschild black hole space-time. In particular, we give
explicit analytic expressions for the field perturbations (for a specific
multipole) of general spin up to the first four orders at late times. These
expressions are val... | [
{
"created": "Tue, 15 Sep 2015 19:58:53 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Oct 2015 00:21:48 GMT",
"version": "v2"
}
] | 2015-12-30 | [
[
"Casals",
"Marc",
""
],
[
"Ottewill",
"Adrian C.",
""
]
] | We present an analysis of the behaviour at late-times of linear field perturbations of a Schwarzschild black hole space-time. In particular, we give explicit analytic expressions for the field perturbations (for a specific multipole) of general spin up to the first four orders at late times. These expressions are valid... |
gr-qc/9405043 | Steve Carlip | S. Carlip | Time in (2+1)-Dimensional Quantum Gravity | 5 pages, LaTeX, UCD-94-18 | null | null | null | gr-qc | null | General relativity in three spacetime dimensions is used to explore three
approaches to the ``problem of time'' in quantum gravity: the internal
Schr\"odinger approach with mean extrinsic curvature as a time variable, the
Wheeler-DeWitt equation, and covariant canonical quantization with ``evolving
constants of motio... | [
{
"created": "Fri, 20 May 1994 23:24:24 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Carlip",
"S.",
""
]
] | General relativity in three spacetime dimensions is used to explore three approaches to the ``problem of time'' in quantum gravity: the internal Schr\"odinger approach with mean extrinsic curvature as a time variable, the Wheeler-DeWitt equation, and covariant canonical quantization with ``evolving constants of motion.... |
2303.07361 | Oscar J. C. Dias | Oscar J.C. Dias, Gary W. Gibbons, Jorge E. Santos and Benson Way | Static Black Binaries in de Sitter | 15 pages, 8 figures. v2: matches published version (improved
discussions and Figs. 6 and 7 added) | null | null | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | We construct the first four-dimensional multi-black hole solution of general
relativity with a positive cosmological constant. The solution consists of two
static black holes whose gravitational attraction is balanced by the cosmic
expansion. These static binaries provide the first four-dimensional example of
non-uni... | [
{
"created": "Mon, 13 Mar 2023 18:00:01 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Aug 2023 18:00:03 GMT",
"version": "v2"
}
] | 2023-08-04 | [
[
"Dias",
"Oscar J. C.",
""
],
[
"Gibbons",
"Gary W.",
""
],
[
"Santos",
"Jorge E.",
""
],
[
"Way",
"Benson",
""
]
] | We construct the first four-dimensional multi-black hole solution of general relativity with a positive cosmological constant. The solution consists of two static black holes whose gravitational attraction is balanced by the cosmic expansion. These static binaries provide the first four-dimensional example of non-uniqu... |
2010.01490 | Xiang Liu | Xiang Liu | Primordial particles and waves in the early Universe | 5 pages, comments are welcome | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The observational evidence points to the origin of our Universe from a
big-bang explosion, the normal matter we observed can be well explained by the
particles created in the strong and weak interacting phases of the early
universe. The dark energy and dark matter, which occupy major contents of the
universe, may be ... | [
{
"created": "Sun, 4 Oct 2020 06:19:11 GMT",
"version": "v1"
}
] | 2020-10-06 | [
[
"Liu",
"Xiang",
""
]
] | The observational evidence points to the origin of our Universe from a big-bang explosion, the normal matter we observed can be well explained by the particles created in the strong and weak interacting phases of the early universe. The dark energy and dark matter, which occupy major contents of the universe, may be cr... |
gr-qc/9603041 | null | M. Tsuda and T. Shirafuji | Supersymmetry algebra in N = 1 chiral supergravity | 10 pages, latex | Phys.Rev. D54 (1996) 2960-2963 | 10.1103/PhysRevD.54.2960 | STUPP-96-145 | gr-qc | null | We consider the supersymmetry (SUSY) transformations in the chiral Lagrangian
for $N = 1$ supergravity (SUGRA) with the complex tetrad following the method
used in the usual $N = 1$ SUGRA, and present the explicit form of the SUSY
trasformations in the first-order form. The SUSY transformations are generated
by two i... | [
{
"created": "Mon, 25 Mar 1996 06:39:05 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Tsuda",
"M.",
""
],
[
"Shirafuji",
"T.",
""
]
] | We consider the supersymmetry (SUSY) transformations in the chiral Lagrangian for $N = 1$ supergravity (SUGRA) with the complex tetrad following the method used in the usual $N = 1$ SUGRA, and present the explicit form of the SUSY trasformations in the first-order form. The SUSY transformations are generated by two ind... |
gr-qc/0510054 | George E. A. Matsas | Eduardo Gueron, Clovis A. S. Maia and George E. A. Matsas | "Swimming" versus "swinging" in spacetime | 4 pages (revtex), 4 figures, to appear in Physical Review D | Phys.Rev. D73 (2006) 024020 | 10.1103/PhysRevD.73.024020 | null | gr-qc astro-ph | null | Wisdom has recently unveiled a new relativistic effect, called ``spacetime
swimming'', where quasi-rigid free bodies in curved spacetimes can "speed up",
"slow down" or "deviate" their falls by performing "local" cyclic shape
deformations. We show here that for fast enough cycles this effect dominates
over a non-rela... | [
{
"created": "Tue, 11 Oct 2005 12:44:17 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Jan 2006 20:35:56 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Gueron",
"Eduardo",
""
],
[
"Maia",
"Clovis A. S.",
""
],
[
"Matsas",
"George E. A.",
""
]
] | Wisdom has recently unveiled a new relativistic effect, called ``spacetime swimming'', where quasi-rigid free bodies in curved spacetimes can "speed up", "slow down" or "deviate" their falls by performing "local" cyclic shape deformations. We show here that for fast enough cycles this effect dominates over a non-relati... |
2007.10850 | Kemal Ak{\i}n | Kemal Ak{\i}n, A. Sava\c{s} Arapo\u{g}lu, A. Emrah Y\"ukselci | Formalizing Slow-roll Inflation in Scalar-Tensor Theories of Gravitation | 19 pages, 5 figures. arXiv admin note: text overlap with
arXiv:1504.02192 | null | 10.1016/j.dark.2020.100691 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The viability of slow-roll approximation is examined by considering the
structure of phase spaces in scalar-tensor theories of gravitation and the
analysis is exemplified with a nonminimally coupled scalar field to the
spacetime curvature. The slow-roll field equations are obtained in the Jordan
frame in two ways: fi... | [
{
"created": "Sun, 19 Jul 2020 11:54:28 GMT",
"version": "v1"
}
] | 2020-07-22 | [
[
"Akın",
"Kemal",
""
],
[
"Arapoğlu",
"A. Savaş",
""
],
[
"Yükselci",
"A. Emrah",
""
]
] | The viability of slow-roll approximation is examined by considering the structure of phase spaces in scalar-tensor theories of gravitation and the analysis is exemplified with a nonminimally coupled scalar field to the spacetime curvature. The slow-roll field equations are obtained in the Jordan frame in two ways: firs... |
gr-qc/0104074 | null | S. Q. Wu and X. Cai | Extra Spin-Rotation Coupling Effect in a Radiating Kerr Space-time | Revtex, 4 pages, no figure, submitted to Phys. Rev. Lett | null | null | null | gr-qc | null | Source-less wave equations are derived for massless scalar, neutrino and
electromagnetic perturbations of a radiating Kerr space-time, and the Hawking
radiation of massless particles with spin $s =0, 1/2$ and 1 in this geometry is
investigated by using a method of the generalized tortoise coordinate
transformation. A... | [
{
"created": "Tue, 24 Apr 2001 03:47:19 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Wu",
"S. Q.",
""
],
[
"Cai",
"X.",
""
]
] | Source-less wave equations are derived for massless scalar, neutrino and electromagnetic perturbations of a radiating Kerr space-time, and the Hawking radiation of massless particles with spin $s =0, 1/2$ and 1 in this geometry is investigated by using a method of the generalized tortoise coordinate transformation. An ... |
2309.03565 | Xiao-Mei Kuang | Zhen-Hao Yang, Yun-He Lei, Xiao-Mei Kuang, Jian-Pin Wu | Perturbations of massless external fields in Horndeski hairy black hole | 20 pages | Eur. Phys. J. C (2024) 84:153 | 10.1140/epjc/s10052-024-12511-4 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we study the propagations of external fields in Horndeski
theory, including the scalar field, electromagnetic field and Dirac field. We
extensively explore the quasinormal frequencies, time evolution, greybody
factors and emission rates of those massless perturbing fields by solving the
corresponding m... | [
{
"created": "Thu, 7 Sep 2023 08:52:44 GMT",
"version": "v1"
}
] | 2024-03-26 | [
[
"Yang",
"Zhen-Hao",
""
],
[
"Lei",
"Yun-He",
""
],
[
"Kuang",
"Xiao-Mei",
""
],
[
"Wu",
"Jian-Pin",
""
]
] | In this paper, we study the propagations of external fields in Horndeski theory, including the scalar field, electromagnetic field and Dirac field. We extensively explore the quasinormal frequencies, time evolution, greybody factors and emission rates of those massless perturbing fields by solving the corresponding mas... |
2103.11245 | R. E. Kastner | R. E. Kastner | The Relativistic Transactional Interpretation and Spacetime Emergence | Excerpted material from the forthcoming 2nd edition of my book, The
Transactional Interpretation of Quantum Mechanics: A Relativistic Account
(CUP) | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the manner in which the spacetime manifold emerges from a quantum
substratum through the transactional process, in which spacetime events and
their connections are established. In this account, there is no background
spacetime as is generally assumed in physical theorizing. Instead, the usual
notion of a ... | [
{
"created": "Sat, 20 Mar 2021 21:08:58 GMT",
"version": "v1"
}
] | 2021-03-23 | [
[
"Kastner",
"R. E.",
""
]
] | We consider the manner in which the spacetime manifold emerges from a quantum substratum through the transactional process, in which spacetime events and their connections are established. In this account, there is no background spacetime as is generally assumed in physical theorizing. Instead, the usual notion of a ba... |
2208.02983 | Sandipan Sengupta | Sandipan Sengupta | Hamiltonian form of `Carroll' gravity | Version published in Phys. Rev. D | Phys. Rev. D 107, 024010 (2023) | 10.1103/PhysRevD.107.024010 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We develop a Hamiltonian description of the `Carroll' (Levy Leblond-Sen
Gupta) limit of gravity theory in the first-order formalism. Through a
constraint analysis, the number of local degrees of freedom are shown to be two
in this singular limit. The associated Hamiltonian constraint depends only on
the densitized tr... | [
{
"created": "Fri, 5 Aug 2022 04:45:00 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Aug 2022 16:39:44 GMT",
"version": "v2"
},
{
"created": "Sat, 14 Jan 2023 13:33:15 GMT",
"version": "v3"
}
] | 2023-01-18 | [
[
"Sengupta",
"Sandipan",
""
]
] | We develop a Hamiltonian description of the `Carroll' (Levy Leblond-Sen Gupta) limit of gravity theory in the first-order formalism. Through a constraint analysis, the number of local degrees of freedom are shown to be two in this singular limit. The associated Hamiltonian constraint depends only on the densitized tria... |
2103.00155 | Gianmassimo Tasinato | Gianmassimo Tasinato, Alice Garoffolo, Daniele Bertacca, Sabino
Matarrese | Gravitational-wave cosmological distances in scalar-tensor theories of
gravity | 22 pages plus technical appendixes. 3 figures. V2: version published
in JCAP | null | 10.1088/1475-7516/2021/06/050 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the propagation of high-frequency gravitational waves (GW) in
scalar-tensor theories of gravity, with the aim of examining properties of
cosmological distances as inferred from GW measurements. By using symmetry
principles, we first determine the most general structure of the GW linearized
equations and of... | [
{
"created": "Sat, 27 Feb 2021 08:22:16 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Jun 2021 07:13:20 GMT",
"version": "v2"
}
] | 2021-07-07 | [
[
"Tasinato",
"Gianmassimo",
""
],
[
"Garoffolo",
"Alice",
""
],
[
"Bertacca",
"Daniele",
""
],
[
"Matarrese",
"Sabino",
""
]
] | We analyze the propagation of high-frequency gravitational waves (GW) in scalar-tensor theories of gravity, with the aim of examining properties of cosmological distances as inferred from GW measurements. By using symmetry principles, we first determine the most general structure of the GW linearized equations and of t... |
2008.13185 | Chiranjeeb Singha | Saptarshi Saha, Chiranjeeb Singha and Arpan Chatterjee | Retarded resonance Casimir-Polder interaction of a uniformly rotating
two-atom system | 8 pages, Comments are welcome | Eur. Phys. J. C 81 (2021) 3, 265 | 10.1140/epjc/s10052-021-09077-w | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | We consider here, a two-atom system is uniformly moving through a circular
ring at an ultra-relativistic speed and weakly interacting with common external
fields. The vacuum fluctuations of the quantum fields generate the entanglement
between the atoms. Hence an effective energy shift is originated, which depends
on ... | [
{
"created": "Sun, 30 Aug 2020 14:31:59 GMT",
"version": "v1"
}
] | 2021-04-07 | [
[
"Saha",
"Saptarshi",
""
],
[
"Singha",
"Chiranjeeb",
""
],
[
"Chatterjee",
"Arpan",
""
]
] | We consider here, a two-atom system is uniformly moving through a circular ring at an ultra-relativistic speed and weakly interacting with common external fields. The vacuum fluctuations of the quantum fields generate the entanglement between the atoms. Hence an effective energy shift is originated, which depends on th... |
1710.07862 | Kent Yagi | Toral Gupta, Barun Majumder, Kent Yagi, Nicol\'as Yunes | I-Love-Q Relations for Neutron Stars in dynamical Chern Simons Gravity | 23 pages, 7 figures | null | 10.1088/1361-6382/aa9c68 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Neutron stars are ideal to probe, not only nuclear physics, but also
strong-field gravity. Approximate universal relations insensitive to the star's
internal structure exist among certain observables and are useful in testing
General Relativity, as they project out the uncertainties in the equation of
state. One such... | [
{
"created": "Sat, 21 Oct 2017 23:31:37 GMT",
"version": "v1"
}
] | 2017-12-27 | [
[
"Gupta",
"Toral",
""
],
[
"Majumder",
"Barun",
""
],
[
"Yagi",
"Kent",
""
],
[
"Yunes",
"Nicolás",
""
]
] | Neutron stars are ideal to probe, not only nuclear physics, but also strong-field gravity. Approximate universal relations insensitive to the star's internal structure exist among certain observables and are useful in testing General Relativity, as they project out the uncertainties in the equation of state. One such s... |
0807.1797 | Iver Brevik | Iver Brevik | Viscous Modified Gravity on a RS Brane Embedded in AdS5 | 12 pages, no figures; to appear in Eur. Phys. J. C | null | 10.1140/epjc/s10052-008-0678-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a modified gravity fluid on a Randall-Sundrum II brane situated
at y=0, the action containing a power \alpha of the scalar curvature. As is
known from 4D spatially flat modified gravity, the presence of a bulk viscosity
may drive the cosmic fluid into the phantom region (w < -1) and thereafter
inevitably ... | [
{
"created": "Fri, 11 Jul 2008 08:52:24 GMT",
"version": "v1"
}
] | 2015-05-13 | [
[
"Brevik",
"Iver",
""
]
] | We consider a modified gravity fluid on a Randall-Sundrum II brane situated at y=0, the action containing a power \alpha of the scalar curvature. As is known from 4D spatially flat modified gravity, the presence of a bulk viscosity may drive the cosmic fluid into the phantom region (w < -1) and thereafter inevitably in... |
0705.1207 | Arunava Bhadra Dr. | A. Bhadra and S. C. Das | Comment on "On Mach's critique of Newton and Copernicus" | Six pages, to appear in AJP | Am.J.Phys.75:850-854,2007 | 10.1119/1.2716032 | null | gr-qc | null | Hartman and Nissim-Sabat have argued that Mach's idea of the relativity of
rotational motion suffers from internal inconsistencies and leads to a
contradiction that there cannot be a stationary bucket in a rotating universe.
They also claimed that non-inertial electromagnetic and stellar aberration
observations can d... | [
{
"created": "Wed, 9 May 2007 05:43:44 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Bhadra",
"A.",
""
],
[
"Das",
"S. C.",
""
]
] | Hartman and Nissim-Sabat have argued that Mach's idea of the relativity of rotational motion suffers from internal inconsistencies and leads to a contradiction that there cannot be a stationary bucket in a rotating universe. They also claimed that non-inertial electromagnetic and stellar aberration observations can dis... |
1306.3594 | Robert Mann | Andrew Laurtizen, Peter Gustainis, and Robert B. Mann | The 4-Body Problem in a (1+1)-Dimensional Self-Gravitating System | 40 pages, 23 figures, to appear in Journal of Mathematical Physics | null | null | null | gr-qc astro-ph.IM math-ph math.MP nlin.CD | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report on the results of a study of the motion of a four particle
non-relativistic one-dimensional self-gravitating system. We show that the
system can be visualized in terms of a single particle moving within a
potential whose equipotential surfaces are shaped like a box of pyramid-shaped
sides. As such this is t... | [
{
"created": "Sat, 15 Jun 2013 17:31:16 GMT",
"version": "v1"
}
] | 2013-06-18 | [
[
"Laurtizen",
"Andrew",
""
],
[
"Gustainis",
"Peter",
""
],
[
"Mann",
"Robert B.",
""
]
] | We report on the results of a study of the motion of a four particle non-relativistic one-dimensional self-gravitating system. We show that the system can be visualized in terms of a single particle moving within a potential whose equipotential surfaces are shaped like a box of pyramid-shaped sides. As such this is the... |
gr-qc/9711048 | Marco Spaans | Marco Spaans (Harvard CfA) | A Topological Formulation of the Standard Model | 19 pages, PS file | null | null | null | gr-qc | null | A topological theory for the interactions in Nature is presented. The theory
derives from the cyclic properties of the topological manifold Q=2T^3 + 3S^1 x
S^2 which has 23 intrinsic degrees of freedom, discrete Z_3 and Z_2 x Z_3
internal groups, an SU(5) gauge group, and an anomalous U(1) symmetry. These
properties ... | [
{
"created": "Sat, 15 Nov 1997 22:34:39 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Spaans",
"Marco",
"",
"Harvard CfA"
]
] | A topological theory for the interactions in Nature is presented. The theory derives from the cyclic properties of the topological manifold Q=2T^3 + 3S^1 x S^2 which has 23 intrinsic degrees of freedom, discrete Z_3 and Z_2 x Z_3 internal groups, an SU(5) gauge group, and an anomalous U(1) symmetry. These properties re... |
1109.0201 | Alexander Kamenshchik | Alexander Yu. Kamenshchik and Isaak M. Khalatnikov | Some properties of the "String gas" with the equation of state $p =
-\rho/3$ | 9 pages, 1 figure | null | 10.1142/S0218271812500046 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the string gas - a perfect fluid with the equation of state $p =
-\frac13 \rho$ possesses rather interesing properties. In Friedmann universes
its presence can can change the observable topology of the space; in the
spherically symmetric spacetimes it produces rather bizzare geometries and in a
way its i... | [
{
"created": "Thu, 1 Sep 2011 14:52:55 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Kamenshchik",
"Alexander Yu.",
""
],
[
"Khalatnikov",
"Isaak M.",
""
]
] | We show that the string gas - a perfect fluid with the equation of state $p = -\frac13 \rho$ possesses rather interesing properties. In Friedmann universes its presence can can change the observable topology of the space; in the spherically symmetric spacetimes it produces rather bizzare geometries and in a way its inf... |
1003.1617 | Lorenzo Fatibene | L. Fatibene, M. Ferraris, M. Francaviglia | New Cases of Universality Theorem for Gravitational Theories | 10 pages, few typos corrected | Class.Quant.Grav.27:165021,2010 | 10.1088/0264-9381/27/16/165021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The "Universality Theorem" for gravity shows that f(R) theories (in their
metric-affine formulation) in vacuum are dynamically equivalent to vacuum
Einstein equations with suitable cosmological constants. This holds true for a
generic (i.e. except sporadic degenerate cases) analytic function f(R) and
standard gravity... | [
{
"created": "Mon, 8 Mar 2010 13:21:38 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Mar 2010 17:19:36 GMT",
"version": "v2"
},
{
"created": "Thu, 18 Mar 2010 06:48:58 GMT",
"version": "v3"
}
] | 2014-11-20 | [
[
"Fatibene",
"L.",
""
],
[
"Ferraris",
"M.",
""
],
[
"Francaviglia",
"M.",
""
]
] | The "Universality Theorem" for gravity shows that f(R) theories (in their metric-affine formulation) in vacuum are dynamically equivalent to vacuum Einstein equations with suitable cosmological constants. This holds true for a generic (i.e. except sporadic degenerate cases) analytic function f(R) and standard gravity w... |
1412.8485 | Idan Talshir | Idan Talshir | General Relativity from conservation laws without the principle of least
action | The paragraph that follows equation 2.13 needs to be checked and/or
revised and/or expanded | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that the field equations of general relativity and other metric
theories can be derived from the conservation of energy-momentum without using
the assumption of least action principle. We show a new procedure for
perturbative derivation of symmetric pseudo-energy momentum for the gravity
field.
| [
{
"created": "Mon, 29 Dec 2014 21:07:32 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Dec 2014 07:41:11 GMT",
"version": "v2"
},
{
"created": "Wed, 4 Feb 2015 14:58:23 GMT",
"version": "v3"
},
{
"created": "Tue, 10 Feb 2015 10:19:45 GMT",
"version": "v4"
},
{
"cr... | 2015-10-19 | [
[
"Talshir",
"Idan",
""
]
] | We prove that the field equations of general relativity and other metric theories can be derived from the conservation of energy-momentum without using the assumption of least action principle. We show a new procedure for perturbative derivation of symmetric pseudo-energy momentum for the gravity field. |
1110.1967 | Plyatsko Roman | Roman Plyatsko, Oleksandr Stefanyshyn, Mykola Fenyk | Mathisson-Papapetrou-Dixon equations in the Schwarzschild and Kerr
backgrounds | 21 pages, 11 figures. arXiv admin note: substantial text overlap with
arXiv:1105.2405 | Class. Quantum Grav. 28, 195025 (2011) | 10.1088/0264-9381/28/19/195025 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new representation, which does not contain the third-order derivatives of
the coordinates, of the exact Mathisson-Papapetrou-Dixon equations, describing
the motion of a spinning test particle, is obtained under the assumption of the
Mathisson-Pirani condition in a Kerr background. For this purpose the integrals
of ... | [
{
"created": "Mon, 10 Oct 2011 09:18:29 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Plyatsko",
"Roman",
""
],
[
"Stefanyshyn",
"Oleksandr",
""
],
[
"Fenyk",
"Mykola",
""
]
] | A new representation, which does not contain the third-order derivatives of the coordinates, of the exact Mathisson-Papapetrou-Dixon equations, describing the motion of a spinning test particle, is obtained under the assumption of the Mathisson-Pirani condition in a Kerr background. For this purpose the integrals of en... |
gr-qc/9812020 | Jose Wadih Maluf | J. W. Maluf and J. F. da Rocha-Neto | Static Bondi Energy in the Teleparallel Equivalent of General Relativity | 23 pages, Latex, no figures, to appear in the J. Math. Phys | J.Math.Phys. 40 (1999) 1490-1503 | 10.1063/1.532817 | null | gr-qc | null | We consider Bondi's radiating metric in the context of the teleparallel
equivalent of general relativity (TEGR). This metric describes the asymptotic
form of a radiating solution of Einstein's equations. The total gravitational
energy for this solution can be calculated by means of pseudo-tensors in the
static case. ... | [
{
"created": "Sat, 5 Dec 1998 18:03:24 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Maluf",
"J. W.",
""
],
[
"da Rocha-Neto",
"J. F.",
""
]
] | We consider Bondi's radiating metric in the context of the teleparallel equivalent of general relativity (TEGR). This metric describes the asymptotic form of a radiating solution of Einstein's equations. The total gravitational energy for this solution can be calculated by means of pseudo-tensors in the static case. In... |
gr-qc/0512143 | Ozgur Delice | Ahmet Baykal, Ozgur Delice | Cylindrically Symmetric-Static Brans-Dicke-Maxwell Solutions | 10 pages, latex | null | null | null | gr-qc | null | We present static cylindrically symmetric electrovac solutions in the
framework of the Brans-Dicke theory and show that our solution yields some of
the well-known solutions for special values of the parameters of the resulting
metric functions.
| [
{
"created": "Fri, 23 Dec 2005 14:30:18 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Baykal",
"Ahmet",
""
],
[
"Delice",
"Ozgur",
""
]
] | We present static cylindrically symmetric electrovac solutions in the framework of the Brans-Dicke theory and show that our solution yields some of the well-known solutions for special values of the parameters of the resulting metric functions. |
1511.08752 | Tyson Littenberg | Tyson B. Littenberg, Jonah B. Kanner, Neil J. Cornish, Margaret
Millhouse | Enabling high confidence detections of gravitational-wave bursts | 15 pages, 6 figures, submitted to PRD | Phys. Rev. D 94, 044050 (2016) | 10.1103/PhysRevD.94.044050 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With the advanced LIGO and Virgo detectors taking observations the detection
of gravitational waves is expected within the next few years. Extracting
astrophysical information from gravitational wave detections is a well-posed
problem and thoroughly studied when detailed models for the waveforms are
available. Howeve... | [
{
"created": "Fri, 27 Nov 2015 17:37:20 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Littenberg",
"Tyson B.",
""
],
[
"Kanner",
"Jonah B.",
""
],
[
"Cornish",
"Neil J.",
""
],
[
"Millhouse",
"Margaret",
""
]
] | With the advanced LIGO and Virgo detectors taking observations the detection of gravitational waves is expected within the next few years. Extracting astrophysical information from gravitational wave detections is a well-posed problem and thoroughly studied when detailed models for the waveforms are available. However,... |
1602.00599 | Tanja Hinderer | Tanja Hinderer, Andrea Taracchini, Francois Foucart, Alessandra
Buonanno, Jan Steinhoff, Matthew Duez, Lawrence E. Kidder, Harald P.
Pfeiffer, Mark A. Scheel, Bela Szilagyi, Kenta Hotokezaka, Koutarou Kyutoku,
Masaru Shibata, Cory W. Carpenter | Effects of neutron-star dynamic tides on gravitational waveforms within
the effective-one-body approach | null | Phys. Rev. Lett. 116, 181101 (2016) | 10.1103/PhysRevLett.116.181101 | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extracting the unique information on ultradense nuclear matter from the
gravitational waves emitted by merging, neutron-star binaries requires robust
theoretical models of the signal. We develop a novel effective-one-body
waveform model that includes, for the first time, dynamic (instead of only
adiabatic) tides of t... | [
{
"created": "Mon, 1 Feb 2016 17:16:14 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Mar 2016 17:15:52 GMT",
"version": "v2"
},
{
"created": "Mon, 9 May 2016 15:16:37 GMT",
"version": "v3"
}
] | 2016-05-11 | [
[
"Hinderer",
"Tanja",
""
],
[
"Taracchini",
"Andrea",
""
],
[
"Foucart",
"Francois",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Steinhoff",
"Jan",
""
],
[
"Duez",
"Matthew",
""
],
[
"Kidder",
"Lawrence E.",
... | Extracting the unique information on ultradense nuclear matter from the gravitational waves emitted by merging, neutron-star binaries requires robust theoretical models of the signal. We develop a novel effective-one-body waveform model that includes, for the first time, dynamic (instead of only adiabatic) tides of the... |
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