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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1605.07311 | V. Sreenath | D. Jaffino Stargen, V. Sreenath and L. Sriramkumar | Quantum-to-classical transition and imprints of continuous spontaneous
localization in classical bouncing universes | v1: 20 pages, 6 figures; v2: 21 pages, 6 figures, author added,
analytical solution for r_k constructed, discussions improved; v3: 25 pages,
6 figures, discussion improved, published in Int. J. Mod. Phys. D | Int. J. Mod. Phys. D 30 (2021) 07, 2150049 | 10.1142/S0218271821500498 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The perturbations in the early universe are generated as a result of the
interplay between quantum field theory and gravitation. Since these primordial
perturbations lead to the anisotropies in the cosmic microwave background and
eventually to the inhomogeneities in the Large Scale Structure (LSS), they
provide a uni... | [
{
"created": "Tue, 24 May 2016 06:39:14 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Nov 2017 09:26:44 GMT",
"version": "v2"
},
{
"created": "Wed, 28 Jul 2021 12:04:40 GMT",
"version": "v3"
}
] | 2021-07-29 | [
[
"Stargen",
"D. Jaffino",
""
],
[
"Sreenath",
"V.",
""
],
[
"Sriramkumar",
"L.",
""
]
] | The perturbations in the early universe are generated as a result of the interplay between quantum field theory and gravitation. Since these primordial perturbations lead to the anisotropies in the cosmic microwave background and eventually to the inhomogeneities in the Large Scale Structure (LSS), they provide a uniqu... |
1212.1394 | Gilles Esposito-Farese | Eugeny Babichev and Gilles Esposito-Farese | Time-dependent spherically symmetric covariant Galileons | 20 pages, no figure, RevTeX4 format; v2: minor changes reflecting the
published version in PRD | Phys. Rev. D 87, 044032 (2013) | 10.1103/PhysRevD.87.044032 | LPT-Orsay 13-11 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study spherically symmetric solutions of the cubic covariant Galileon
model in curved spacetime in presence of a matter source, in the test scalar
field approximation. We show that a cosmological time evolution of the Galileon
field gives rise to an induced matter-scalar coupling, due to the
Galileon-graviton kine... | [
{
"created": "Thu, 6 Dec 2012 17:48:28 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Feb 2013 17:48:56 GMT",
"version": "v2"
}
] | 2013-02-19 | [
[
"Babichev",
"Eugeny",
""
],
[
"Esposito-Farese",
"Gilles",
""
]
] | We study spherically symmetric solutions of the cubic covariant Galileon model in curved spacetime in presence of a matter source, in the test scalar field approximation. We show that a cosmological time evolution of the Galileon field gives rise to an induced matter-scalar coupling, due to the Galileon-graviton kineti... |
2007.14143 | Lucas Gardai Collodel | Lucas G. Collodel, Daniela D. Doneva and Stoytcho S. Yazadjiev | Rotating tensor-multiscalar black holes with two scalars | null | Phys. Rev. D 102, 084032 (2020) | 10.1103/PhysRevD.102.084032 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct hairy black hole solutions in a particular set of
tensor-multi-scalar theories of gravity for which the target-space admits a
Killing vector field with periodic flow that is furthermore the generator of a
one-parameter family of point transformations which leave the whole theory
invariant. As for black h... | [
{
"created": "Tue, 28 Jul 2020 12:00:16 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Nov 2020 08:53:24 GMT",
"version": "v2"
}
] | 2020-11-11 | [
[
"Collodel",
"Lucas G.",
""
],
[
"Doneva",
"Daniela D.",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
]
] | We construct hairy black hole solutions in a particular set of tensor-multi-scalar theories of gravity for which the target-space admits a Killing vector field with periodic flow that is furthermore the generator of a one-parameter family of point transformations which leave the whole theory invariant. As for black hol... |
gr-qc/0112031 | Turakulov Z. Y. | Naresh Dadhich, Z. Ya. Turakulov | The most general axially symmetric electrovac spacetime adimitting
separable equations of motion | 9 pages, RevTex, Accepted by Class. Quantum Grav. Title, Abstract and
some expressions have been modified, typos corrected. The solution and main
result remain unaltered | null | 10.1088/0264-9381/19/11/301 | null | gr-qc | null | We obtain the most general solution of the Einstein electro - vacuum equation
for the stationary axially symmetric spacetime in which the Hamilton-Jacobi and
Klein - Gordon equations are separable. The most remarkable feature of the
solution is its invariance under the duality transformation involving mass and
NUT pa... | [
{
"created": "Fri, 14 Dec 2001 15:54:14 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Apr 2002 17:11:12 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Dadhich",
"Naresh",
""
],
[
"Turakulov",
"Z. Ya.",
""
]
] | We obtain the most general solution of the Einstein electro - vacuum equation for the stationary axially symmetric spacetime in which the Hamilton-Jacobi and Klein - Gordon equations are separable. The most remarkable feature of the solution is its invariance under the duality transformation involving mass and NUT para... |
1202.1147 | Mahouton J. Stephane Houndjo Dr | M. Hamani Daouda, Manuel E. Rodrigues and M. J. S. Houndjo | Anisotropic fluid for a set of non-diagonal tetrads in f(T) gravity | 12 pages. Accepted for publication in Physics Letters B (PLB) | Physics Letters B 715 (2012) 241-245 | 10.1016/j.physletb.2012.07.039 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider $f(T)$ gravity for a Weitzenbock spherically symmetric and static
spacetime, where the metric is projected in the tangent space to the manifold
for a set of non-diagonal tetrads. The matter content is coupled through the
energy momentum tensor of an anisotropic fluid, generating various classes of
new bla... | [
{
"created": "Mon, 6 Feb 2012 14:18:20 GMT",
"version": "v1"
},
{
"created": "Sun, 15 Jul 2012 21:40:06 GMT",
"version": "v2"
}
] | 2012-08-15 | [
[
"Daouda",
"M. Hamani",
""
],
[
"Rodrigues",
"Manuel E.",
""
],
[
"Houndjo",
"M. J. S.",
""
]
] | We consider $f(T)$ gravity for a Weitzenbock spherically symmetric and static spacetime, where the metric is projected in the tangent space to the manifold for a set of non-diagonal tetrads. The matter content is coupled through the energy momentum tensor of an anisotropic fluid, generating various classes of new black... |
gr-qc/0010024 | David Brown | J.D. Brown, S.R. Lau, and J.W. York | Action and Energy of the Gravitational Field | To be published in Annals of Physics. This final version includes two
new sections, one giving examples of quasilocal energy and the other
containing a discussion of energy at spatial infinity. References have been
added to papers by Bose and Dadhich, Anco and Tung | null | null | null | gr-qc | null | We present a detailed examination of the variational principle for metric
general relativity as applied to a ``quasilocal'' spacetime region $\M$ (that
is, a region that is both spatially and temporally bounded). Our analysis
relies on the Hamiltonian formulation of general relativity, and thereby
assumes a foliation... | [
{
"created": "Fri, 6 Oct 2000 20:54:27 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Feb 2002 22:47:08 GMT",
"version": "v2"
},
{
"created": "Mon, 15 Apr 2002 21:36:26 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Brown",
"J. D.",
""
],
[
"Lau",
"S. R.",
""
],
[
"York",
"J. W.",
""
]
] | We present a detailed examination of the variational principle for metric general relativity as applied to a ``quasilocal'' spacetime region $\M$ (that is, a region that is both spatially and temporally bounded). Our analysis relies on the Hamiltonian formulation of general relativity, and thereby assumes a foliation o... |
gr-qc/0303002 | Bozhidar Zakhariev Iliev | Bozhidar Z. Iliev (Institute for Nuclear Research and Nuclear Energy,
Bulgarian Academy of Sciences, Sofia, Bulgaria) | Equivalence principle in classical electrodynamics | 18 LaTeX pages. The packages AMS-LaTeX and amsfonts are required. For
related papers, visit the "publication" pages at
http://theo.inrne.bas.bg/~bozho/ | null | null | null | gr-qc math-ph math.MP | null | The principle of equivalence in gravitational physics and its mathematical
base are reviewed. It is demonstrated how this principle can be realized in
classical electrodynamis. In general, it is valid at any given single point or
along a path without selfintersections unless the field considered satisfies
some condit... | [
{
"created": "Sat, 1 Mar 2003 08:21:03 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Iliev",
"Bozhidar Z.",
"",
"Institute for Nuclear Research and Nuclear Energy,\n Bulgarian Academy of Sciences, Sofia, Bulgaria"
]
] | The principle of equivalence in gravitational physics and its mathematical base are reviewed. It is demonstrated how this principle can be realized in classical electrodynamis. In general, it is valid at any given single point or along a path without selfintersections unless the field considered satisfies some conditio... |
2208.09893 | Piotr T. Chru\'sciel | Piotr T. Chru\'sciel and Gregory J. Galloway | Maximal hypersurfaces in asymptotically Anti-de Sitter spacetime | 29 pages, 3 figures | null | null | Preprint UWThPh 2022-12 | gr-qc hep-th math.DG | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We prove uniqueness, existence, and regularity results for maximal
hypersurfaces in spacetimes with a conformal completion at timelike infinity
and asymptotically constant scalar curvature, as relevant for asymptotically
AdS spacetimes.
This work is dedicated to Yvonne Choquet-Bruhat on the occasion of her
upcoming... | [
{
"created": "Sun, 21 Aug 2022 14:32:02 GMT",
"version": "v1"
}
] | 2022-08-23 | [
[
"Chruściel",
"Piotr T.",
""
],
[
"Galloway",
"Gregory J.",
""
]
] | We prove uniqueness, existence, and regularity results for maximal hypersurfaces in spacetimes with a conformal completion at timelike infinity and asymptotically constant scalar curvature, as relevant for asymptotically AdS spacetimes. This work is dedicated to Yvonne Choquet-Bruhat on the occasion of her upcoming 99t... |
1408.5256 | Andrea Geralico | Donato Bini, Maurizio Falanga, Andrea Geralico, Luigi Stella | The signal from an emitting source moving in a Schwarzschild spacetime
under the influence of a radiation field | 17 pages, 5 figures; published version. arXiv admin note: text
overlap with arXiv:astro-ph/0411583 by other authors | Class. Quantum Grav. 29, 065014 (2012) | 10.1088/0264-9381/29/6/065014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The motion of matter immersed in a radiation field is affected by radiation
drag, as a result of scattering or absorption and re-emission. The resulting
friction-like drag, also known as Poynting-Robertson effect, has been recently
studied in the general relativistic background of the Schwarzschild and Kerr
metric, u... | [
{
"created": "Fri, 22 Aug 2014 10:44:36 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Bini",
"Donato",
""
],
[
"Falanga",
"Maurizio",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Stella",
"Luigi",
""
]
] | The motion of matter immersed in a radiation field is affected by radiation drag, as a result of scattering or absorption and re-emission. The resulting friction-like drag, also known as Poynting-Robertson effect, has been recently studied in the general relativistic background of the Schwarzschild and Kerr metric, und... |
2110.04087 | Sebasti\'an Bahamonde Dr | Sebastian Bahamonde, Alexey Golovnev, Mar\'ia-Jos\'e Guzm\'an, Jackson
Levi Said, Christian Pfeifer | Black Holes in $f(T,B)$ Gravity: Exact and Perturbed Solutions | Matches published version in JCAP. 29 pages, 1 figure | JCAP01(2022)037 | 10.1088/1475-7516/2022/01/037 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spherically symmetric solutions of theories of gravity built one fundamental
class of solutions to describe compact objects like black holes and stars.
Moreover, they serve as starting point for the search of more realistic axially
symmetric solutions which are capable to describe rotating compact objects.
Theories o... | [
{
"created": "Fri, 8 Oct 2021 12:22:31 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Jan 2022 03:35:45 GMT",
"version": "v2"
}
] | 2022-01-21 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Golovnev",
"Alexey",
""
],
[
"Guzmán",
"María-José",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Pfeifer",
"Christian",
""
]
] | Spherically symmetric solutions of theories of gravity built one fundamental class of solutions to describe compact objects like black holes and stars. Moreover, they serve as starting point for the search of more realistic axially symmetric solutions which are capable to describe rotating compact objects. Theories of ... |
1308.2323 | Charles Torre | C. G. Torre | The Spacetime Geometry of a Null Electromagnetic Field | 28 pages | null | 10.1088/0264-9381/31/4/045022 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a set of local geometric conditions on a spacetime metric which are
necessary and sufficient for it to be a null electrovacuum, that is, the metric
is part of a solution to the Einstein-Maxwell equations with a null
electromagnetic field. These conditions are restrictions on a null congruence
canonically cons... | [
{
"created": "Sat, 10 Aug 2013 14:41:35 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Jan 2014 15:54:32 GMT",
"version": "v2"
}
] | 2015-06-16 | [
[
"Torre",
"C. G.",
""
]
] | We give a set of local geometric conditions on a spacetime metric which are necessary and sufficient for it to be a null electrovacuum, that is, the metric is part of a solution to the Einstein-Maxwell equations with a null electromagnetic field. These conditions are restrictions on a null congruence canonically constr... |
2011.10425 | Antonio Onofre | Jo\~ao D. \'Alvares, Jos\'e A. Font, Felipe F. Freitas, Osvaldo G.
Freitas, Ant\'onio P. Morais, Solange Nunes, Antonio Onofre, Alejandro
Torres-Forn\'e | Exploring gravitational-wave detection and parameter inference using
Deep Learning methods | 16 pages, 12 figures | null | 10.1088/1361-6382/ac0455 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We explore machine learning methods to detect gravitational waves (GW) from
binary black hole (BBH) mergers using deep learning (DL) algorithms. The DL
networks are trained with gravitational waveforms obtained from BBH mergers
with component masses randomly sampled in the range from 5 to 100 solar masses
and luminos... | [
{
"created": "Fri, 20 Nov 2020 14:42:42 GMT",
"version": "v1"
}
] | 2021-08-11 | [
[
"Álvares",
"João D.",
""
],
[
"Font",
"José A.",
""
],
[
"Freitas",
"Felipe F.",
""
],
[
"Freitas",
"Osvaldo G.",
""
],
[
"Morais",
"António P.",
""
],
[
"Nunes",
"Solange",
""
],
[
"Onofre",
"Antonio",
""
... | We explore machine learning methods to detect gravitational waves (GW) from binary black hole (BBH) mergers using deep learning (DL) algorithms. The DL networks are trained with gravitational waveforms obtained from BBH mergers with component masses randomly sampled in the range from 5 to 100 solar masses and luminosit... |
1806.05360 | Toshiaki Ono | Toshiaki Ono, Asahi Ishihara and Hideki Asada | Deflection angle of light for an observer and source at finite distance
from a rotating wormhole | 11 pages, no figures, text improved, accepted by PRD | Phys. Rev. D 98, 044047 (2018) | 10.1103/PhysRevD.98.044047 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | By using a method improved with a generalized optical metric, the deflection
of light for an observer and source at finite distance from a lens object in a
stationary, axisymmetric and asymptotically flat spacetime has been recently
discussed [Ono, Ishihara, Asada, Phys. Rev. D 96, 104037 (2017)]. By using this
metho... | [
{
"created": "Thu, 14 Jun 2018 04:19:55 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Oct 2018 02:11:41 GMT",
"version": "v2"
}
] | 2019-07-08 | [
[
"Ono",
"Toshiaki",
""
],
[
"Ishihara",
"Asahi",
""
],
[
"Asada",
"Hideki",
""
]
] | By using a method improved with a generalized optical metric, the deflection of light for an observer and source at finite distance from a lens object in a stationary, axisymmetric and asymptotically flat spacetime has been recently discussed [Ono, Ishihara, Asada, Phys. Rev. D 96, 104037 (2017)]. By using this method,... |
gr-qc/0606128 | Luc Blanchet | Luc Blanchet | Post-Newtonian Theory and Dimensional Regularization | 16 pages, to appear in the Proceedings of the "Albert Einstein
Century Conference", Paris (2005), edited by Jean-Michel Alimi | AIPConf.Proc.861:145-160,2006 | 10.1063/1.2399575 | null | gr-qc | null | Inspiralling compact binaries are ideally suited for application of a
high-order post-Newtonian (PN) gravitational wave generation formalism. To be
observed by the LIGO and VIRGO detectors, these very relativistic systems (with
orbital velocities of the order of 0.5c in the last rotations) require
high-accuracy templ... | [
{
"created": "Thu, 29 Jun 2006 16:54:30 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Jul 2006 18:26:28 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Blanchet",
"Luc",
""
]
] | Inspiralling compact binaries are ideally suited for application of a high-order post-Newtonian (PN) gravitational wave generation formalism. To be observed by the LIGO and VIRGO detectors, these very relativistic systems (with orbital velocities of the order of 0.5c in the last rotations) require high-accuracy templat... |
2310.02245 | Jaume Haro | Jaume de Haro | Reheating formulas in Quintessential Inflation via Gravitational
Particle Production | 12 pages. Version accepted for publication in PRD | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We calculate the reheating temperature in scenarios where heavy particles are
gravitationally produced during a phase transition. We explore two distinct
situations: the decay of these particles both during and after the kination
phase. Subsequently, we determine the respective reheating temperatures.
Finally, we con... | [
{
"created": "Tue, 3 Oct 2023 17:51:23 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Oct 2023 17:14:25 GMT",
"version": "v2"
},
{
"created": "Thu, 21 Dec 2023 06:18:31 GMT",
"version": "v3"
}
] | 2023-12-22 | [
[
"de Haro",
"Jaume",
""
]
] | We calculate the reheating temperature in scenarios where heavy particles are gravitationally produced during a phase transition. We explore two distinct situations: the decay of these particles both during and after the kination phase. Subsequently, we determine the respective reheating temperatures. Finally, we const... |
2406.06756 | Ismael Ayuso | Ismael Ayuso and Ruth Lazkoz | Characterization of wormhole space-times supported by a covariant
action-dependent Lagrangian theory | 13 pages, 4 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we undertake an analysis of new wormhole solutions within an
action-dependent Lagrangian framework. These geometries can be traversable and
supported by a positive energy density. The modification of the gravitational
field equations is produced by the inclusion in the gravitational Lagrangian
linear of... | [
{
"created": "Mon, 10 Jun 2024 19:34:22 GMT",
"version": "v1"
}
] | 2024-06-12 | [
[
"Ayuso",
"Ismael",
""
],
[
"Lazkoz",
"Ruth",
""
]
] | In this work, we undertake an analysis of new wormhole solutions within an action-dependent Lagrangian framework. These geometries can be traversable and supported by a positive energy density. The modification of the gravitational field equations is produced by the inclusion in the gravitational Lagrangian linear of a... |
1603.02052 | Lorenzo Iorio | Lorenzo Iorio, Matteo Luca Ruggiero, Ninfa Radicella, Emmanuel N.
Saridakis | Constraining the Schwarzschild-de Sitter Solution in Models of Modified
Gravity | LaTex2e, 29 pages, no tables, 1 figure, 135 references. Accepted for
publication in Physics of the Dark Universe (Phys. Dark Univ.). arXiv admin
note: text overlap with arXiv:1010.1846 by other authors | Phys. Dark Univ. 13 (2016) pp. 111-120 | 10.1016/j.dark.2016.05.001 | null | gr-qc astro-ph.EP hep-ph physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Schwarzschild-de Sitter (SdS) solution exists in the large majority of
modified gravity theories, as expected, and in particular the effective
cosmological constant is determined by the specific parameters of the given
theory. We explore the possibility to use future extended radio-tracking data
from the currentl... | [
{
"created": "Mon, 7 Mar 2016 13:20:25 GMT",
"version": "v1"
},
{
"created": "Mon, 16 May 2016 18:57:07 GMT",
"version": "v2"
}
] | 2016-05-31 | [
[
"Iorio",
"Lorenzo",
""
],
[
"Ruggiero",
"Matteo Luca",
""
],
[
"Radicella",
"Ninfa",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | The Schwarzschild-de Sitter (SdS) solution exists in the large majority of modified gravity theories, as expected, and in particular the effective cosmological constant is determined by the specific parameters of the given theory. We explore the possibility to use future extended radio-tracking data from the currently ... |
0706.4010 | Ralf Schutzhold | Clovis Maia and Ralf Sch\"utzhold | Quantum toy model for black-hole back-reaction | 4 pages | Phys.Rev.D76:101502,2007 | 10.1103/PhysRevD.76.101502 | null | gr-qc | null | We propose a simple quantum field theoretical toy model for black hole
evaporation and study the back-reaction of Hawking radiation onto the classical
background. It turns out that the horizon is also ``pushed back'' in this
situation (i.e., the interior region shrinks) but this back-reaction is not
caused by energy ... | [
{
"created": "Wed, 27 Jun 2007 12:15:53 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Maia",
"Clovis",
""
],
[
"Schützhold",
"Ralf",
""
]
] | We propose a simple quantum field theoretical toy model for black hole evaporation and study the back-reaction of Hawking radiation onto the classical background. It turns out that the horizon is also ``pushed back'' in this situation (i.e., the interior region shrinks) but this back-reaction is not caused by energy co... |
1508.04641 | Francisco Lobo | Salvatore Capozziello, Tiberiu Harko, Tomi S. Koivisto, Francisco S.N.
Lobo, and Gonzalo J. Olmo | Hybrid metric-Palatini gravity | 40 pages, to appear as a review paper in a Special Issue of Universe:
"Modified Gravity Cosmology: From Inflation to Dark Energy" | Universe 1 (2015) 2, 199-238 | 10.3390/universe1020199 | NORDITA-2015-92 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, the phenomenology of f(R) gravity has been scrutinized motivated by
the possibility to account for the self-accelerated cosmic expansion without
invoking dark energy sources. Besides, this kind of modified gravity is capable
of addressing the dynamics of several self-gravitating systems alternatively to
the... | [
{
"created": "Wed, 19 Aug 2015 13:38:33 GMT",
"version": "v1"
}
] | 2015-08-28 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Koivisto",
"Tomi S.",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Olmo",
"Gonzalo J.",
""
]
] | Recently, the phenomenology of f(R) gravity has been scrutinized motivated by the possibility to account for the self-accelerated cosmic expansion without invoking dark energy sources. Besides, this kind of modified gravity is capable of addressing the dynamics of several self-gravitating systems alternatively to the p... |
2207.06340 | Masum Murshid | Masum Murshid, Farook Rahaman and Mehedi Kalam | Quasi Normal Modes of Ayon-Beato Garcia Regular Black Holes For Scalar
Field | null | Indian J Phys (2022) | 10.1007/s12648-022-02374-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we compute quasi-normal modes of ABG black holes (which has a
non-linear electrodynamical source) using the WKB methods and AIM. A comparison
between the spectrum of QNMs calculated by both methods is made. We analyse how
the spectrum of QNMs depends on the black hole parameters, multipole number and
o... | [
{
"created": "Wed, 13 Jul 2022 16:57:06 GMT",
"version": "v1"
}
] | 2022-07-14 | [
[
"Murshid",
"Masum",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Kalam",
"Mehedi",
""
]
] | In this paper, we compute quasi-normal modes of ABG black holes (which has a non-linear electrodynamical source) using the WKB methods and AIM. A comparison between the spectrum of QNMs calculated by both methods is made. We analyse how the spectrum of QNMs depends on the black hole parameters, multipole number and ove... |
1808.03474 | Saleh Mahamat | Kamiko Kouemeni Jean Rodrigue, Mahamat Saleh, Bouetou Bouetou Thomas
and Timoleon Crepin Kofane | Thermodynamic Phase Transition and global stability of the Regular
Hayward Black hole Surrounded by Quintessence | 14 pages, 8 figures | Modern Physics Letters A, 2050129, 2020 | 10.1142/S0217732320501291 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we investigate the thermodynamic and the stability of the
regular Hayward black hole surrounded by quintessence. Using the metric of the
black hole surrounded by quintessence and the new approach of the holographic
principle, we derive the expression of the Unruh Verlinde temperature. Hawking
temperatur... | [
{
"created": "Fri, 10 Aug 2018 10:08:37 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Jul 2020 20:43:56 GMT",
"version": "v2"
}
] | 2020-07-29 | [
[
"Rodrigue",
"Kamiko Kouemeni Jean",
""
],
[
"Saleh",
"Mahamat",
""
],
[
"Thomas",
"Bouetou Bouetou",
""
],
[
"Kofane",
"Timoleon Crepin",
""
]
] | In this work, we investigate the thermodynamic and the stability of the regular Hayward black hole surrounded by quintessence. Using the metric of the black hole surrounded by quintessence and the new approach of the holographic principle, we derive the expression of the Unruh Verlinde temperature. Hawking temperature ... |
gr-qc/9506035 | Werner Seiler | W.M. Seiler and R.W. Tucker (Lancaster) | Quantization of the Reduced Phase Space of Two-Dimensional Dilaton
Gravity | 19 pages, LaTeX | Phys.Rev.D53:4366-4373,1996 | 10.1103/PhysRevD.53.4366 | null | gr-qc | null | We study some two-dimensional dilaton gravity models using the formal theory
of partial differential equations. This allows us to prove that the reduced
phase space is two-dimensional without an explicit construction. By using a
convenient (static) gauge we reduce the theory to coupled \ode s and we are
able to deriv... | [
{
"created": "Mon, 19 Jun 1995 15:31:05 GMT",
"version": "v1"
}
] | 2011-09-09 | [
[
"Seiler",
"W. M.",
"",
"Lancaster"
],
[
"Tucker",
"R. W.",
"",
"Lancaster"
]
] | We study some two-dimensional dilaton gravity models using the formal theory of partial differential equations. This allows us to prove that the reduced phase space is two-dimensional without an explicit construction. By using a convenient (static) gauge we reduce the theory to coupled \ode s and we are able to derive ... |
gr-qc/0512101 | Guihua Tian | Guihua Tian | The stable problem of the black-hole connected region in the
Schwarzschild black hole | 6 pages, no figures | null | null | null | gr-qc | null | The stability of the Schwarzschild black hole is studied. Using the
Painlev\'{e} coordinate, our region can be defined as the black-hole-connected
region(r>2m, see text) of the Schwarzschild black hole or the
white-hole-connected region(r>2m, see text) of the Schwarzschild black hole. We
study the stable problems of ... | [
{
"created": "Sun, 18 Dec 2005 07:25:25 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Tian",
"Guihua",
""
]
] | The stability of the Schwarzschild black hole is studied. Using the Painlev\'{e} coordinate, our region can be defined as the black-hole-connected region(r>2m, see text) of the Schwarzschild black hole or the white-hole-connected region(r>2m, see text) of the Schwarzschild black hole. We study the stable problems of th... |
2112.07736 | Cetin Senturk | Metin Gurses, Yaghoub Heydarzade, Cetin Senturk | Kerr-Schild-Kundt Metrics in Generic Einstein-Maxwell Theories | 15 pages, no figures, matches the published version | Phys. Rev. D 105, 044004 (2022) | 10.1103/PhysRevD.105.044004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study Kerr-Schild-Kundt class of metrics in generic gravity theories with
Maxwell's field. We prove that these metrics linearize and simplify the field
equations of generic gravity theories with Maxwell's field.
| [
{
"created": "Tue, 14 Dec 2021 20:39:47 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Feb 2022 14:46:07 GMT",
"version": "v2"
}
] | 2022-02-18 | [
[
"Gurses",
"Metin",
""
],
[
"Heydarzade",
"Yaghoub",
""
],
[
"Senturk",
"Cetin",
""
]
] | We study Kerr-Schild-Kundt class of metrics in generic gravity theories with Maxwell's field. We prove that these metrics linearize and simplify the field equations of generic gravity theories with Maxwell's field. |
gr-qc/9810059 | Mihaela Time | Mihaela Time | Space-time distributions | 6 pages, LaTeX | null | null | null | gr-qc | null | The space-time foliation Sigma compatible with the gravitational field g on a
4-manifold M determines a fibration pi of M, pi : M -> N is a surjective
submersion over the 1-dimensional leaves space N. M is then written as a
disjoint union of the leaves of Sigma, which are 3-dimensional spacelike
surfaces on M.
The ... | [
{
"created": "Sun, 18 Oct 1998 19:09:37 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Time",
"Mihaela",
""
]
] | The space-time foliation Sigma compatible with the gravitational field g on a 4-manifold M determines a fibration pi of M, pi : M -> N is a surjective submersion over the 1-dimensional leaves space N. M is then written as a disjoint union of the leaves of Sigma, which are 3-dimensional spacelike surfaces on M. The deco... |
gr-qc/0603039 | Sergio Mendoza | E. A. Huerta, S. Mendoza | A simple accretion model of a rotating gas sphere onto a Schwarzschild
black hole | 21 pages, 5 figures. Accepted for publication in RMA&A | Rev.Mex.Astron.Astrofis.43:191-202,2007 | null | null | gr-qc astro-ph | null | We construct a simple accretion model of a rotating pressureless gas sphere
onto a Schwarzschild black hole. We show how to build analytic solutions in
terms of Jacobi elliptic functions. This construction represents a general
relativistic generalisation of the Newtonian accretion model first proposed by
Ulrich (1976... | [
{
"created": "Sun, 12 Mar 2006 01:08:59 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Jan 2007 14:34:03 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Huerta",
"E. A.",
""
],
[
"Mendoza",
"S.",
""
]
] | We construct a simple accretion model of a rotating pressureless gas sphere onto a Schwarzschild black hole. We show how to build analytic solutions in terms of Jacobi elliptic functions. This construction represents a general relativistic generalisation of the Newtonian accretion model first proposed by Ulrich (1976).... |
gr-qc/0012051 | Giovanni Amelino-Camelia | Giovanni Amelino-Camelia | Relativity in space-times with short-distance structure governed by an
observer-independent (Planckian) length scale | Same formulas and results as in 1st version, but a change of notation
is introduced in order to clarify that the studied illustrative example is
consistent with the R.P. for both choices of the overall sign. 1 ref added
and 2 refs upgraded. Some rewording of the text in Sec5, and addition of an
analogy with bac... | Int.J.Mod.Phys. D11 (2002) 35-60 | 10.1142/S0218271802001330 | null | gr-qc | null | I show that it is possible to formulate the Relativity postulates in a way
that does not lead to inconsistencies in the case of space-times whose
short-distance structure is governed by an observer-independent length scale.
The consistency of these postulates proves incorrect the expectation that
modifications of the... | [
{
"created": "Thu, 14 Dec 2000 22:47:53 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Dec 2000 19:32:41 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Amelino-Camelia",
"Giovanni",
""
]
] | I show that it is possible to formulate the Relativity postulates in a way that does not lead to inconsistencies in the case of space-times whose short-distance structure is governed by an observer-independent length scale. The consistency of these postulates proves incorrect the expectation that modifications of the r... |
2309.11370 | Oliver Petersen | Hans Oude Groeniger, Oliver Petersen, and Hans Ringstr\"om | Formation of quiescent big bang singularities | 77 pages | null | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hawking's singularity theorem says that cosmological solutions arising from
initial data with positive mean curvature have a past singularity. However, the
nature of the singularity remains unclear. We therefore ask: If the initial
hypersurface has sufficiently large mean curvature, does the curvature
necessarily blo... | [
{
"created": "Wed, 20 Sep 2023 14:52:38 GMT",
"version": "v1"
}
] | 2023-09-21 | [
[
"Groeniger",
"Hans Oude",
""
],
[
"Petersen",
"Oliver",
""
],
[
"Ringström",
"Hans",
""
]
] | Hawking's singularity theorem says that cosmological solutions arising from initial data with positive mean curvature have a past singularity. However, the nature of the singularity remains unclear. We therefore ask: If the initial hypersurface has sufficiently large mean curvature, does the curvature necessarily blow ... |
1909.05674 | S. I. Kruglov | S.I. Kruglov | Dyonic black holes with nonlinear logarithmic electrodynamics | 16 pages, 4 figures | Grav. Cosmol. 25 (2019) no.2, 190-195 | 10.1134/S0202289319020105 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new dyonic solution for black holes with spherically symmetric
configurations in general relativity is obtained. We study black holes
possessing electric and magnetic charges, and the source of the gravitational
field is electromagnetic fields obeying the logarithmic electrodynamics. This
particular form of nonline... | [
{
"created": "Tue, 10 Sep 2019 22:02:04 GMT",
"version": "v1"
}
] | 2019-09-17 | [
[
"Kruglov",
"S. I.",
""
]
] | A new dyonic solution for black holes with spherically symmetric configurations in general relativity is obtained. We study black holes possessing electric and magnetic charges, and the source of the gravitational field is electromagnetic fields obeying the logarithmic electrodynamics. This particular form of nonlinear... |
1106.0799 | Laszlo Arpad Gergely | Zolt\'an Kov\'acs, L\'aszl\'o \'Arp\'ad Gergely, M\'aty\'as Vas\'uth | Accretion processes in magnetically and tidally perturbed Schwarzschild
black holes | to be published in Phys. Rev. D, 13 pages, 7 figures, 1 table | Phys.Rev.D84:024018,2011 | 10.1103/PhysRevD.84.024018 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the accretion process in the region of the Preston-Poisson
space-time describing a Schwarzschild black hole perturbed by asymptotically
uniform magnetic field and axisymmetric tidal structures. We find that the
accretion disk shrinks and the marginally stable orbit shifts towards the black
hole with the pert... | [
{
"created": "Sat, 4 Jun 2011 08:14:57 GMT",
"version": "v1"
}
] | 2011-08-08 | [
[
"Kovács",
"Zoltán",
""
],
[
"Gergely",
"László Árpád",
""
],
[
"Vasúth",
"Mátyás",
""
]
] | We study the accretion process in the region of the Preston-Poisson space-time describing a Schwarzschild black hole perturbed by asymptotically uniform magnetic field and axisymmetric tidal structures. We find that the accretion disk shrinks and the marginally stable orbit shifts towards the black hole with the pertur... |
1004.2260 | Sergei Alexandrov | Sergei Alexandrov | The new vertices and canonical quantization | 16 pages, 1 figure; added subsection on ordering of Casimir
operators, more details on imposing simplicity constraints | Phys.Rev. D82 (2010) 024024 | 10.1103/PhysRevD.82.024024 | LPTA:10-022 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present two results on the recently proposed new spin foam models. First,
we show how a (slightly modified) restriction on representations in the EPRL
model leads to the appearance of the Ashtekar-Barbero connection, thus bringing
this model even closer to LQG. Second, we however argue that the quantization
proced... | [
{
"created": "Tue, 13 Apr 2010 20:03:44 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Apr 2010 19:52:36 GMT",
"version": "v2"
},
{
"created": "Fri, 25 Jun 2010 04:45:09 GMT",
"version": "v3"
}
] | 2012-10-12 | [
[
"Alexandrov",
"Sergei",
""
]
] | We present two results on the recently proposed new spin foam models. First, we show how a (slightly modified) restriction on representations in the EPRL model leads to the appearance of the Ashtekar-Barbero connection, thus bringing this model even closer to LQG. Second, we however argue that the quantization procedur... |
0808.3182 | Paingalil Kunjan Suresh | Rizwan Ul Haq Ansari and P K Suresh | Dvali-Gabadadze-Porrati Cosmology in Bianchi I brane | null | Phys.Rev.D78:043533,2008 | 10.1103/PhysRevD.78.043533 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dynamics of Dvali-Gabadadze-Porrati Cosmology (DGP) braneworld with an
anisotropic brane is studied. The Friedmann equations and their solutions are
obtained for two branches of anisotropic DGP model. The late time behavior in
DGP cosmology is examined in the presence of anisotropy which shows that
universe enter... | [
{
"created": "Sat, 23 Aug 2008 12:12:17 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Ansari",
"Rizwan Ul Haq",
""
],
[
"Suresh",
"P K",
""
]
] | The dynamics of Dvali-Gabadadze-Porrati Cosmology (DGP) braneworld with an anisotropic brane is studied. The Friedmann equations and their solutions are obtained for two branches of anisotropic DGP model. The late time behavior in DGP cosmology is examined in the presence of anisotropy which shows that universe enters ... |
gr-qc/9711069 | Radu Ionicioiu | Radu Ionicioiu (DAMTP, University of Cambridge, UK) | Building blocks for topology change in 3D | 12 pages, LaTeX, 13 figures, uses epsf | null | null | DAMTP-97-127 | gr-qc hep-th | null | We investigate topology change in 3D. Using Morse theory and handle
decomposition we find the set of elementary cobordisms for 3-manifolds. These
are: (i) \O <-> S^2; (ii) \Sigma_g <-> \Sigma_{g+1}; (iii) \Sigma_{g_1} \sqcup
\Sigma_{g_2} <-> \Sigma_{g_1+g_2} and they have appealing physical
interpretations, e.g. Big ... | [
{
"created": "Sun, 23 Nov 1997 01:54:56 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ionicioiu",
"Radu",
"",
"DAMTP, University of Cambridge, UK"
]
] | We investigate topology change in 3D. Using Morse theory and handle decomposition we find the set of elementary cobordisms for 3-manifolds. These are: (i) \O <-> S^2; (ii) \Sigma_g <-> \Sigma_{g+1}; (iii) \Sigma_{g_1} \sqcup \Sigma_{g_2} <-> \Sigma_{g_1+g_2} and they have appealing physical interpretations, e.g. Big Ba... |
gr-qc/0202101 | Carlos Palenzuela | C. Bona and C. Palenzuela | Flux Limiter Methods in 3D Numerical Relativity | 9 pages, 5 figures. to be published in the Procedings of ERE01 | Lect.Notes Phys. 617 (2003) 130-139 | 10.1007/3-540-36973-2_7 | null | gr-qc | null | New numerical methods have been applied in relativity to obtain a numerical
evolution of Einstein equations much more robust and stable. Starting from 3+1
formalism and with the evolution equations written as a FOFCH (first-order flux
conservative hyperbolic) system, advanced numerical methods from CFD
(Computational... | [
{
"created": "Thu, 28 Feb 2002 15:41:02 GMT",
"version": "v1"
}
] | 2022-09-21 | [
[
"Bona",
"C.",
""
],
[
"Palenzuela",
"C.",
""
]
] | New numerical methods have been applied in relativity to obtain a numerical evolution of Einstein equations much more robust and stable. Starting from 3+1 formalism and with the evolution equations written as a FOFCH (first-order flux conservative hyperbolic) system, advanced numerical methods from CFD (Computational F... |
gr-qc/0602015 | Joan Josep Ferrando | Bartolom\'e Coll, Joan Josep Ferrando and Juan Antonio Morales | Two-dimensional approach to relativistic positioning systems | 11 pages, 5 figures. v2: a brief description of the principal
bibliography has been added | Phys.Rev. D73 (2006) 084017 | 10.1103/PhysRevD.73.084017 | null | gr-qc | null | A relativistic positioning system is a physical realization of a coordinate
system consisting in four clocks in arbitrary motion broadcasting their proper
times. The basic elements of the relativistic positioning systems are presented
in the two-dimensional case. This simplified approach allows to explain and to
anal... | [
{
"created": "Fri, 3 Feb 2006 16:06:48 GMT",
"version": "v1"
},
{
"created": "Mon, 22 May 2006 09:11:29 GMT",
"version": "v2"
}
] | 2016-08-16 | [
[
"Coll",
"Bartolomé",
""
],
[
"Ferrando",
"Joan Josep",
""
],
[
"Morales",
"Juan Antonio",
""
]
] | A relativistic positioning system is a physical realization of a coordinate system consisting in four clocks in arbitrary motion broadcasting their proper times. The basic elements of the relativistic positioning systems are presented in the two-dimensional case. This simplified approach allows to explain and to analyz... |
2405.10293 | Rodrigo Maier | Rodrigo Maier, Manuella Corr\^ea e Silva | Charged Black Holes from Interacting Vacuum | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper charged black holes are obtained assuming that a Born-Infeld
electrodynamics may arise from an interaction between the electromagnetic field
and a vacuum component. In this context Cauchy horizons do not appear in the
maximal analytical extension once an event horizon is formed so that the
interior spac... | [
{
"created": "Thu, 16 May 2024 17:51:38 GMT",
"version": "v1"
}
] | 2024-05-17 | [
[
"Maier",
"Rodrigo",
""
],
[
"Silva",
"Manuella Corrêa e",
""
]
] | In this paper charged black holes are obtained assuming that a Born-Infeld electrodynamics may arise from an interaction between the electromagnetic field and a vacuum component. In this context Cauchy horizons do not appear in the maximal analytical extension once an event horizon is formed so that the interior spacet... |
1808.08048 | Yuri Obukhov | Yakov Itin, Yuri N. Obukhov, Jens Boos, Friedrich W. Hehl | Premetric teleparallel theory of gravity and its local and linear
constitutive law | 54 pages, 2 figures, Latex | Eur. Phys. J. C (2018) 78: 907 | 10.1140/epjc/s10052-018-6344-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We continue to investigate the premetric teleparallel theory of gravity (TG)
with the coframe (tetrad) as gravitational potential. We start from the field
equations and a local and linear constitutive law. We create a Tonti diagram of
TG in order to disclose the structure of TG. Subsequently we irreducibly
decompose ... | [
{
"created": "Fri, 24 Aug 2018 08:33:18 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Nov 2018 17:53:24 GMT",
"version": "v2"
}
] | 2018-11-12 | [
[
"Itin",
"Yakov",
""
],
[
"Obukhov",
"Yuri N.",
""
],
[
"Boos",
"Jens",
""
],
[
"Hehl",
"Friedrich W.",
""
]
] | We continue to investigate the premetric teleparallel theory of gravity (TG) with the coframe (tetrad) as gravitational potential. We start from the field equations and a local and linear constitutive law. We create a Tonti diagram of TG in order to disclose the structure of TG. Subsequently we irreducibly decompose th... |
gr-qc/9801066 | Helio V. Fagundes | S. S. e Costa and H. V. Fagundes (Instituto de Fisica Teorica/UNESP -
Sao Paulo) | Birth of a Closed Universe of Negative Spatial Curvature | 10 pages, 1 figure. Revised version with better comments on assumed
topology change | null | null | IFT-P-010/98 | gr-qc astro-ph | null | We propose a modified form of the spontaneous birth of the universe by
quantum tunneling. It proceeds through topology change and inflation, to
eventually become a universe with closed spatial sections of negative curvature
and nontrivial global topology.
| [
{
"created": "Tue, 20 Jan 1998 18:05:00 GMT",
"version": "v1"
},
{
"created": "Sat, 16 May 1998 15:18:52 GMT",
"version": "v2"
},
{
"created": "Sat, 18 Jul 1998 15:21:38 GMT",
"version": "v3"
},
{
"created": "Sun, 8 Nov 1998 17:58:23 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Costa",
"S. S. e",
"",
"Instituto de Fisica Teorica/UNESP -\n Sao Paulo"
],
[
"Fagundes",
"H. V.",
"",
"Instituto de Fisica Teorica/UNESP -\n Sao Paulo"
]
] | We propose a modified form of the spontaneous birth of the universe by quantum tunneling. It proceeds through topology change and inflation, to eventually become a universe with closed spatial sections of negative curvature and nontrivial global topology. |
gr-qc/9411003 | Doug | S.P. de Alwis, D.A. MacIntire | Lessons of Quantum 2D Dilaton Gravity | 13 pages, phyzzx | Phys.Lett.B344:110-116,1995 | 10.1016/0370-2693(94)01549-R | COLO-HEP-341 | gr-qc hep-th | null | Based on the analysis of two dimensional dilaton gravity we argue that the
semiclassical equations of black hole formation and evaporation should not be
interpreted in terms of expectation values of operators in the exact quantum
theory, but rather as WKB trajectories. Thus at the semiclassical level it does
not seem... | [
{
"created": "Tue, 1 Nov 1994 21:37:48 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"de Alwis",
"S. P.",
""
],
[
"MacIntire",
"D. A.",
""
]
] | Based on the analysis of two dimensional dilaton gravity we argue that the semiclassical equations of black hole formation and evaporation should not be interpreted in terms of expectation values of operators in the exact quantum theory, but rather as WKB trajectories. Thus at the semiclassical level it does not seem p... |
2208.00703 | Yunjiao Gao | Yunjiao Gao, Sijie Gao | Testing the weak cosmic censorship conjecture for extremal magnetized
Kerr-Newman black holes | 18 pages,4 figures,accepted for publication in European Physical
Journal C | null | 10.1140/epjc/s10052-022-10709-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We test the weak cosmic censorship conjecture for magnetized Kerr-Newman
spacetime via the method of injecting a test particle. Hence, we need to know
how the black hole's parameters change when a test particle enters the horizon.
This was an unresolved issue for non-asymptotically flat spacetimes since there
are amb... | [
{
"created": "Mon, 1 Aug 2022 09:22:42 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Aug 2022 12:36:39 GMT",
"version": "v2"
}
] | 2022-09-14 | [
[
"Gao",
"Yunjiao",
""
],
[
"Gao",
"Sijie",
""
]
] | We test the weak cosmic censorship conjecture for magnetized Kerr-Newman spacetime via the method of injecting a test particle. Hence, we need to know how the black hole's parameters change when a test particle enters the horizon. This was an unresolved issue for non-asymptotically flat spacetimes since there are ambig... |
2103.07799 | Dimiter Hadjimichef | C. A. Z. Vasconcellos, P. O. Hess, D. Hadjimichef, B. Bodmann, M.
Razeira and G. L. Volkmer | Pushing the limits of time beyond the Big Bang singularity: The branch
cut universe | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we follow a previously developed theoretical approach, based
in the tools of the singular semi-Riemannian geometry, to push the limits of
time beyond the primordial spacetime singularity. By complexifying the
Friedmann-Lema\^itre-Robertson-Walker (FLRW) metric and Friedmann's equations
we model a bran... | [
{
"created": "Sat, 13 Mar 2021 21:53:09 GMT",
"version": "v1"
},
{
"created": "Mon, 17 May 2021 18:02:24 GMT",
"version": "v2"
}
] | 2021-05-19 | [
[
"Vasconcellos",
"C. A. Z.",
""
],
[
"Hess",
"P. O.",
""
],
[
"Hadjimichef",
"D.",
""
],
[
"Bodmann",
"B.",
""
],
[
"Razeira",
"M.",
""
],
[
"Volkmer",
"G. L.",
""
]
] | In this article we follow a previously developed theoretical approach, based in the tools of the singular semi-Riemannian geometry, to push the limits of time beyond the primordial spacetime singularity. By complexifying the Friedmann-Lema\^itre-Robertson-Walker (FLRW) metric and Friedmann's equations we model a branch... |
2008.01800 | Sergio Mendoza | E. Barrientos, T. Bernal and S. Mendoza | Non-vacuum relativistic extensions of MOND using metric theories of
gravity with curvature-matter couplings and their applications to the
accelerated expansion of the Universe without dark components | 15 pages, 2 figures, 3 tables. Accepted for publication on the
International Journal of Geometric Methods in Modern Physics (IJGMMP) | null | 10.1142/S0219887821500869 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the advantages of using metric theories of gravity with
curvature-matter couplings in order to construct a relativistic generalisation
of the simplest version of Modified Newtonian Dynamics (MOND), where
Tully-Fisher scalings are valid for a wide variety of astrophysical objects. We
show that these proposa... | [
{
"created": "Tue, 4 Aug 2020 19:58:29 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Jan 2021 23:16:28 GMT",
"version": "v2"
}
] | 2021-04-06 | [
[
"Barrientos",
"E.",
""
],
[
"Bernal",
"T.",
""
],
[
"Mendoza",
"S.",
""
]
] | We discuss the advantages of using metric theories of gravity with curvature-matter couplings in order to construct a relativistic generalisation of the simplest version of Modified Newtonian Dynamics (MOND), where Tully-Fisher scalings are valid for a wide variety of astrophysical objects. We show that these proposals... |
2406.10028 | Florian Aubin | Florian Aubin, Eddy Dangelser, Dimitri Estevez, Alain Masserot,
Beno\^it Mours, Thierry Pradier, Antoine Syx, Pierre Van Hove | The Virgo Newtonian calibration system for the O4 observing run | To be submitted to CQG | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | After initial tests performed during previous observing runs, a Newtonian
Calibrator (NCal) system was developed and installed on the Virgo gravitational
wave detector for the O4 observing run. This system, which is continuously
operated, provides the absolute calibration of Virgo for this run. Its
uncertainty of 0.1... | [
{
"created": "Fri, 14 Jun 2024 13:37:15 GMT",
"version": "v1"
}
] | 2024-06-17 | [
[
"Aubin",
"Florian",
""
],
[
"Dangelser",
"Eddy",
""
],
[
"Estevez",
"Dimitri",
""
],
[
"Masserot",
"Alain",
""
],
[
"Mours",
"Benoît",
""
],
[
"Pradier",
"Thierry",
""
],
[
"Syx",
"Antoine",
""
],
[
... | After initial tests performed during previous observing runs, a Newtonian Calibrator (NCal) system was developed and installed on the Virgo gravitational wave detector for the O4 observing run. This system, which is continuously operated, provides the absolute calibration of Virgo for this run. Its uncertainty of 0.17%... |
1505.05863 | Joan Sola | Joan Sola | The cosmological constant and entropy problems: mysteries of the present
with profound roots in the past | This essay received an Honorable Mention from the Gravity Research
Foundation (2015) Awards Essays on Gravitation. Updated references, version
published in Int. J. of Mod. Phys. D | International Journal of Modern Physics D24, No. 12 (2015) 1544027 | 10.1142/S0218271815440277 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An accelerated universe should naturally have a vacuum energy density
determined by its dynamical curvature. The cosmological constant is most likely
a temporary description of a dynamical variable that has been drastically
evolving from the early inflationary era to the present. In this Essay we
propose a unified pi... | [
{
"created": "Thu, 21 May 2015 19:56:20 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Oct 2015 14:21:50 GMT",
"version": "v2"
}
] | 2015-10-28 | [
[
"Sola",
"Joan",
""
]
] | An accelerated universe should naturally have a vacuum energy density determined by its dynamical curvature. The cosmological constant is most likely a temporary description of a dynamical variable that has been drastically evolving from the early inflationary era to the present. In this Essay we propose a unified pict... |
gr-qc/9804031 | WU Zhong Chao | Wu Zhong Chao (Beijing Normal University) | Causality, Time Arrow and Half Cycling Universe | 10 pages | null | null | Beijing preprint-98-102 | gr-qc | null | If one introduces causality into quantum cosmology, then the prescription for
the no-boundary universe should be revised. We show that the thermodymanic
arrow of time associated with the perturbation modes should be reversed at the
maximum expansion for the oscillating Hawking model. To an observer equipped
with the ... | [
{
"created": "Mon, 13 Apr 1998 17:11:08 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Chao",
"Wu Zhong",
"",
"Beijing Normal University"
]
] | If one introduces causality into quantum cosmology, then the prescription for the no-boundary universe should be revised. We show that the thermodymanic arrow of time associated with the perturbation modes should be reversed at the maximum expansion for the oscillating Hawking model. To an observer equipped with the ti... |
gr-qc/0611058 | Bei Lok Hu | B. L. Hu | New View on Quantum Gravity and the Origin of the Universe | 12 pages, pdf format. To appear in a semi-popular book (in Chinese):
Where Do We Come From? -- on the Origin of the Universe (Commercial Press,
Hong Kong 2007) -- A collection of essays based on public talks given by
Stephen Hawking, Bei-Lok Hu, Henry Tye, and others in Hong Kong, May-June
2006 | null | null | null | gr-qc | null | This essay is based on a physics lecture given at the Hong Kong University of
Science and Technology on May 24, 2006, Hong Kong. It has 5 sections and one
page of references and suggested reading. The section titles are: 1. Origin of
the Universe and Quantum Gravity 2. Two major paradigms in Physics and Two
direction... | [
{
"created": "Fri, 10 Nov 2006 15:45:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hu",
"B. L.",
""
]
] | This essay is based on a physics lecture given at the Hong Kong University of Science and Technology on May 24, 2006, Hong Kong. It has 5 sections and one page of references and suggested reading. The section titles are: 1. Origin of the Universe and Quantum Gravity 2. Two major paradigms in Physics and Two directions ... |
1608.04498 | Saeed Rastgoo | Hugo A. Morales-T\'ecotl, Saeed Rastgoo, Juan C. Ruelas | Path integral polymer propagator of relativistic and non-relativistic
particles | 25 pages, 2 figures. Ver. 2: matches the PRD published version,
several revisions made to the Introduction and some other sections, comments
added regarding the continuum limit | Phys. Rev. D 95, 065026 (2017) | 10.1103/PhysRevD.95.065026 | null | gr-qc hep-th math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A recent proposal to connect the loop quantization with the spin foam model
for cosmology via the path integral is hereby adapted to the case of mechanical
systems within the framework of the so called polymer quantum mechanics. The
mechanical models we consider are deparametrized and thus the group averaging
techniq... | [
{
"created": "Tue, 16 Aug 2016 06:47:22 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Mar 2017 19:00:41 GMT",
"version": "v2"
}
] | 2017-03-31 | [
[
"Morales-Técotl",
"Hugo A.",
""
],
[
"Rastgoo",
"Saeed",
""
],
[
"Ruelas",
"Juan C.",
""
]
] | A recent proposal to connect the loop quantization with the spin foam model for cosmology via the path integral is hereby adapted to the case of mechanical systems within the framework of the so called polymer quantum mechanics. The mechanical models we consider are deparametrized and thus the group averaging technique... |
1607.06663 | Shahram Panahiyan | Seyed Hossein Hendi, Shahram Panahiyan, Behzad Eslam Panah, Mir
Faizal, Mehrab Momennia | Critical behavior of charged black holes in Gauss-Bonnet gravity`s
rainbow | 13 pages, 8 figures, published version | Phys. Rev. D 94 (2016) no.2, 024028 | 10.1103/PhysRevD.94.024028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Following an earlier study regarding Gauss-Bonnet-Maxwell black holes in the
presence of gravity's rainbow [S. H. Hendi and M. Faizal, Phys. Rev. D 92,
044027 (2015)], in this paper, we will consider all constants as energy
dependent ones. The geometrical and thermodynamical properties of this
generalization are stud... | [
{
"created": "Thu, 21 Jul 2016 06:18:14 GMT",
"version": "v1"
}
] | 2016-07-25 | [
[
"Hendi",
"Seyed Hossein",
""
],
[
"Panahiyan",
"Shahram",
""
],
[
"Panah",
"Behzad Eslam",
""
],
[
"Faizal",
"Mir",
""
],
[
"Momennia",
"Mehrab",
""
]
] | Following an earlier study regarding Gauss-Bonnet-Maxwell black holes in the presence of gravity's rainbow [S. H. Hendi and M. Faizal, Phys. Rev. D 92, 044027 (2015)], in this paper, we will consider all constants as energy dependent ones. The geometrical and thermodynamical properties of this generalization are studie... |
2109.09982 | A. N. Ivanov | A. N. Ivanov, M. Wellenzohn, H. Abele | Quantum gravitational states of ultracold neutrons as a tool for probing
of beyond-Riemann gravity | 8 pages, 1 figure | Physics Letters B 822, 136640 (2021) | 10.1016/j.physletb.2021.136640 | null | gr-qc hep-ph hep-th nucl-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze a possibility to probe beyond-Riemann gravity (BRG) contributions,
introduced by Kostelecky and Li (see Phys. Rev. D 103, 024059 (2021) and Phys.
Rev. D 104, 044054 (2021)) on the basis of the Effective Field Theory (EFT) by
Kostelecky Phys. Rev. D 69, 105009 (2004). We carry out such an analysis by
calcul... | [
{
"created": "Tue, 21 Sep 2021 06:07:17 GMT",
"version": "v1"
}
] | 2021-09-22 | [
[
"Ivanov",
"A. N.",
""
],
[
"Wellenzohn",
"M.",
""
],
[
"Abele",
"H.",
""
]
] | We analyze a possibility to probe beyond-Riemann gravity (BRG) contributions, introduced by Kostelecky and Li (see Phys. Rev. D 103, 024059 (2021) and Phys. Rev. D 104, 044054 (2021)) on the basis of the Effective Field Theory (EFT) by Kostelecky Phys. Rev. D 69, 105009 (2004). We carry out such an analysis by calculat... |
2406.09498 | Alexandru Lupsasca | Alexandru Lupsasca, Alejandro C\'ardenas-Avenda\~no, Daniel C. M.
Palumbo, Michael D. Johnson, Samuel E. Gralla, Daniel P. Marrone, Peter
Galison, Paul Tiede, Lennox Keeble | The Black Hole Explorer: Photon Ring Science, Detection and Shape
Measurement | Submitted to SPIE Space Telescopes & Instrumentation | null | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativity predicts that black hole images ought to display a bright,
thin (and as-of-yet-unresolved) ring. This "photon ring" is produced by photons
that explore the strong gravity of the black hole, flowing along trajectories
that experience extreme light bending within a few Schwarzschild radii of the
hori... | [
{
"created": "Thu, 13 Jun 2024 18:00:01 GMT",
"version": "v1"
}
] | 2024-06-17 | [
[
"Lupsasca",
"Alexandru",
""
],
[
"Cárdenas-Avendaño",
"Alejandro",
""
],
[
"Palumbo",
"Daniel C. M.",
""
],
[
"Johnson",
"Michael D.",
""
],
[
"Gralla",
"Samuel E.",
""
],
[
"Marrone",
"Daniel P.",
""
],
[
"Galison... | General relativity predicts that black hole images ought to display a bright, thin (and as-of-yet-unresolved) ring. This "photon ring" is produced by photons that explore the strong gravity of the black hole, flowing along trajectories that experience extreme light bending within a few Schwarzschild radii of the horizo... |
2311.05483 | Suddhasattwa Brahma | Suddhasattwa Brahma and Abhinove Nagarajan Seenivasan | Probing the curvature of the cosmos from quantum entanglement due to
gravity | 18 pages including Appendix; comments welcome | null | null | null | gr-qc astro-ph.CO hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | If gravity is fundamentally quantum, any two quantum particles must get
entangled with each other due to their mutual interaction through gravity. This
phenomenon, dubbed gravity-mediated entanglement, has led to recent efforts of
detecting perturbative quantum gravity in table-top experimental setups. In
this paper,... | [
{
"created": "Thu, 9 Nov 2023 16:18:25 GMT",
"version": "v1"
}
] | 2023-11-10 | [
[
"Brahma",
"Suddhasattwa",
""
],
[
"Seenivasan",
"Abhinove Nagarajan",
""
]
] | If gravity is fundamentally quantum, any two quantum particles must get entangled with each other due to their mutual interaction through gravity. This phenomenon, dubbed gravity-mediated entanglement, has led to recent efforts of detecting perturbative quantum gravity in table-top experimental setups. In this paper, w... |
gr-qc/9402037 | Gerard 't Hooft | G. 't Hooft | Horizon Operator Approach to Black Hole Quantization | (presented at "The Black Hole 25 Years After", Santiago, Chile, 17-21
January 1994, TEX, 19 pages, 4 figures (postscript), THU-94/02 | null | null | null | gr-qc | null | The $S$-matrix Ansatz for the construction of a quantum theory of black holes
is further exploited. We first note that treating the metric tensor $g_{\m\n}$
as an operator rather than a background allows us to use a setting where
information is not lost. But then we also observe that the 'trans-Planckian'
particles (... | [
{
"created": "Mon, 21 Feb 1994 13:36:48 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hooft",
"G. 't",
""
]
] | The $S$-matrix Ansatz for the construction of a quantum theory of black holes is further exploited. We first note that treating the metric tensor $g_{\m\n}$ as an operator rather than a background allows us to use a setting where information is not lost. But then we also observe that the 'trans-Planckian' particles (pa... |
2302.09608 | Andronikos Paliathanasis | Andronikos Paliathanasis | Kantowski-Sachs cosmology in scalar-torsion theory | 25 pages; 6 figures; to appear in Eur. Phys. J. C | null | 10.1140/epjc/s10052-023-11342-z | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In the context of scalar-torsion theory we investigate the evolution of the
cosmological anisotropies for a Kantowski-Sachs background geometry. We study
the phase-space of the gravitational field equations by determining the
admitted stationary points and study their stability properties. For the
potential function ... | [
{
"created": "Sun, 19 Feb 2023 16:09:11 GMT",
"version": "v1"
}
] | 2023-03-29 | [
[
"Paliathanasis",
"Andronikos",
""
]
] | In the context of scalar-torsion theory we investigate the evolution of the cosmological anisotropies for a Kantowski-Sachs background geometry. We study the phase-space of the gravitational field equations by determining the admitted stationary points and study their stability properties. For the potential function of... |
1709.03432 | Andronikos Paliathanasis | Andronikos Paliathanasis, Jackson Levi Said and John D. Barrow | Stability of the Kasner Universe in f(T) Gravity | 13 pages, 3 figures, clarifications added, to appear in Physical
Review D | Phys. Rev. D 97, 044008 (2018) | 10.1103/PhysRevD.97.044008 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | $f(T)$ gravity offers an alternative context in which to consider
gravitational interactions where torsion, rather than curvature, is the
mechanism by which gravitation is communicated. We investigate the stability of
the Kasner solution with several forms of the arbitrary lagrangian function
examined within the $f(T... | [
{
"created": "Mon, 11 Sep 2017 15:20:37 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Jan 2018 19:39:43 GMT",
"version": "v2"
}
] | 2018-02-14 | [
[
"Paliathanasis",
"Andronikos",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Barrow",
"John D.",
""
]
] | $f(T)$ gravity offers an alternative context in which to consider gravitational interactions where torsion, rather than curvature, is the mechanism by which gravitation is communicated. We investigate the stability of the Kasner solution with several forms of the arbitrary lagrangian function examined within the $f(T)$... |
1804.11170 | Alexander Zhidenko | M. A. Cuyubamba, R. A. Konoplya, A. Zhidenko | No stable wormholes in Einstein-dilaton-Gauss-Bonnet theory | 7 pages, 3 figures | Phys. Rev. D 98, 044040 (2018) | 10.1103/PhysRevD.98.044040 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In [P. Kanti, B. Kleihaus, J. Kunz, Phys. Rev. Lett. 107, 271101 (2011)] it
was shown that the four-dimensional Einstein-dilaton-Gauss-Bonnet theory allows
for wormholes without introducing any exotic matter. The numerical solution for
the wormhole was obtained there and it was claimed that this solution is
gravitati... | [
{
"created": "Mon, 30 Apr 2018 13:08:40 GMT",
"version": "v1"
},
{
"created": "Sun, 19 Aug 2018 17:28:30 GMT",
"version": "v2"
}
] | 2018-08-28 | [
[
"Cuyubamba",
"M. A.",
""
],
[
"Konoplya",
"R. A.",
""
],
[
"Zhidenko",
"A.",
""
]
] | In [P. Kanti, B. Kleihaus, J. Kunz, Phys. Rev. Lett. 107, 271101 (2011)] it was shown that the four-dimensional Einstein-dilaton-Gauss-Bonnet theory allows for wormholes without introducing any exotic matter. The numerical solution for the wormhole was obtained there and it was claimed that this solution is gravitation... |
gr-qc/0404026 | M. D. Maia | M. D. Maia | Cosmology and Gravitation: Summary talk at the XXIV Brazilian Meeting on
Particles and Fields | 7 pages, no figures, revtex 4. Brazilian Journal of Physics (to
appear 2004) | Braz.J.Phys.34:1443-1449,2004 | null | null | gr-qc | null | This is a brief summary with comments on selected contributions to the
Cosmology and Gravitation section at the $24^{th}$ Brazilian Meeting on
Particle and Fields (ENFPC XXIV), held at Caxambu, from September 30 to October
4, 2003.
| [
{
"created": "Tue, 6 Apr 2004 19:07:54 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Maia",
"M. D.",
""
]
] | This is a brief summary with comments on selected contributions to the Cosmology and Gravitation section at the $24^{th}$ Brazilian Meeting on Particle and Fields (ENFPC XXIV), held at Caxambu, from September 30 to October 4, 2003. |
gr-qc/0511021 | Matthias Kronberger | M. Kronberger, P. Teutsch, B. Alessi, M. Steine, L. Ferrero, K.
Graczewski, M. Juchert, D. Patchick, D. Riddle, J. Saloranta, M. Schoenball,
C. Watson | New galactic open cluster candidates from DSS and 2MASS imagery | 32 pages, 11 figures. Accepted for publication in A&A | null | 10.1051/0004-6361:20054057 | null | gr-qc astro-ph | null | An inspection of the DSS and 2MASS images of selected Milky Way regions has
led to the discovery of 66 stellar groupings whose morphologies,
color-magnitude diagrams, and stellar density distributions suggest that these
objects are possible open clusters that do not yet appear to be listed in any
catalogue. For 24 of... | [
{
"created": "Fri, 4 Nov 2005 18:02:12 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Kronberger",
"M.",
""
],
[
"Teutsch",
"P.",
""
],
[
"Alessi",
"B.",
""
],
[
"Steine",
"M.",
""
],
[
"Ferrero",
"L.",
""
],
[
"Graczewski",
"K.",
""
],
[
"Juchert",
"M.",
""
],
[
"Patchick",
"D.... | An inspection of the DSS and 2MASS images of selected Milky Way regions has led to the discovery of 66 stellar groupings whose morphologies, color-magnitude diagrams, and stellar density distributions suggest that these objects are possible open clusters that do not yet appear to be listed in any catalogue. For 24 of t... |
1306.4826 | Sergey Paston | S.A. Paston, A.A. Sheykin | Embeddings for solutions of Einstein equations | LaTeX, 13 pages. This version contains some additions in comparison
with the journal version | Theor. Math. Phys. 175(3), 2013, 808-817 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study isometric embeddings of some solutions of the Einstein equations
with suffciently high symmetries into a flat ambient space. We briefly describe
a method for constructing surfaces with a given symmetry. We discuss all
minimal embeddings of the Schwarzschild metric obtained using this method and
show how the ... | [
{
"created": "Thu, 20 Jun 2013 11:34:52 GMT",
"version": "v1"
}
] | 2013-06-21 | [
[
"Paston",
"S. A.",
""
],
[
"Sheykin",
"A. A.",
""
]
] | We study isometric embeddings of some solutions of the Einstein equations with suffciently high symmetries into a flat ambient space. We briefly describe a method for constructing surfaces with a given symmetry. We discuss all minimal embeddings of the Schwarzschild metric obtained using this method and show how the me... |
1907.00100 | Preston Jones | Preston Jones, Alexander Barrett, Justin Carpenter, Andri Gretarsson,
Ellie Gretarsson, Brennan Hughey, Douglas Singleton, Darrel Smith, Michele
Zanolin | Gravito-optics and intensity correlations for binary inspiral signal
detections | Revised consistent with the published version | International Journal of Modern Physics A Vol. 38, No. 06n07,
2330005 (2023) | 10.1142/S0217751X23300053 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the correlation functions associated with intensity interferometry
and gravito-optics of gravitational wave signals from compact binary
coalescences. Previous theoretical studies of the gravito-optics of
gravitational waves has concentrated on the characterization of both the
classical and the non-classica... | [
{
"created": "Fri, 28 Jun 2019 22:29:25 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Feb 2021 21:16:03 GMT",
"version": "v2"
},
{
"created": "Sun, 30 Jul 2023 23:48:01 GMT",
"version": "v3"
}
] | 2023-08-01 | [
[
"Jones",
"Preston",
""
],
[
"Barrett",
"Alexander",
""
],
[
"Carpenter",
"Justin",
""
],
[
"Gretarsson",
"Andri",
""
],
[
"Gretarsson",
"Ellie",
""
],
[
"Hughey",
"Brennan",
""
],
[
"Singleton",
"Douglas",
... | We examine the correlation functions associated with intensity interferometry and gravito-optics of gravitational wave signals from compact binary coalescences. Previous theoretical studies of the gravito-optics of gravitational waves has concentrated on the characterization of both the classical and the non-classical ... |
gr-qc/9906124 | Carsten Gundlach | C. Gundlach | Critical gravitational collapse of a perfect fluid: nonspherical
perturbations | RevTex, 29 pages, 14 figures. Completely rewritten for resubmission
to Phys. Rev. D | Phys.Rev. D65 (2002) 084021 | 10.1103/PhysRevD.65.084021 | null | gr-qc | null | Continuously self-similar (CSS) solutions for the gravitational collapse of a
spherically symmetric perfect fluid, with the equation of state p=kappa rho,
with 0<kappa<1 a constant, are constructed numerically and their linear
perturbations, both spherical and nonspherical, are investigated. The l=1 axial
perturbatio... | [
{
"created": "Wed, 30 Jun 1999 19:44:19 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Oct 2001 09:55:10 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Gundlach",
"C.",
""
]
] | Continuously self-similar (CSS) solutions for the gravitational collapse of a spherically symmetric perfect fluid, with the equation of state p=kappa rho, with 0<kappa<1 a constant, are constructed numerically and their linear perturbations, both spherical and nonspherical, are investigated. The l=1 axial perturbations... |
1604.06202 | Helgi Freyr R\'unarsson | Carlos A. R. Herdeiro and Eugen Radu and Helgi F. R\'unarsson | Spinning boson stars and Kerr black holes with scalar hair: the effect
of self-interactions | To appear in a Special Issue of the IJMPD on Selected Papers of the
III Amazonian Symposium on Physics | null | 10.1142/S0218271816410145 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Self-interacting boson stars have been shown to alleviate the astrophysically
low maximal mass of their non-self-interacting counterparts. We report some
physical features of spinning self-interacting boson stars, namely their
compactness, the occurence of ergo-regions and the scalar field profiles, for a
sample of v... | [
{
"created": "Thu, 21 Apr 2016 07:39:26 GMT",
"version": "v1"
}
] | 2016-08-17 | [
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
],
[
"Rúnarsson",
"Helgi F.",
""
]
] | Self-interacting boson stars have been shown to alleviate the astrophysically low maximal mass of their non-self-interacting counterparts. We report some physical features of spinning self-interacting boson stars, namely their compactness, the occurence of ergo-regions and the scalar field profiles, for a sample of val... |
2301.10362 | Shinji Tsujikawa | Ryotaro Kase, Shinji Tsujikawa | Black hole perturbations in Maxwell-Horndeski theories | 27 pages, no figures | Phys. Rev. D 107, 104045 (2023) | 10.1103/PhysRevD.107.104045 | WUCG-23-02 | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the linear stability of black holes in Maxwell-Horndeski theories
where a $U(1)$ gauge-invariant vector field is coupled to a scalar field with
the Lagrangian of full Horndeski theories. The perturbations on a static and
spherically symmetric background can be decomposed into odd- and even-parity
modes under... | [
{
"created": "Wed, 25 Jan 2023 00:18:03 GMT",
"version": "v1"
},
{
"created": "Tue, 23 May 2023 23:05:45 GMT",
"version": "v2"
}
] | 2023-05-25 | [
[
"Kase",
"Ryotaro",
""
],
[
"Tsujikawa",
"Shinji",
""
]
] | We study the linear stability of black holes in Maxwell-Horndeski theories where a $U(1)$ gauge-invariant vector field is coupled to a scalar field with the Lagrangian of full Horndeski theories. The perturbations on a static and spherically symmetric background can be decomposed into odd- and even-parity modes under t... |
gr-qc/9409053 | null | B. L. Hu (Department of Physics, University of Maryland, College Park,
MD and Institute for Advanced Study, Princeton, New Jersey, USA) | Nonequilibrium Quantum Fields in Cosmology: Comments on Selected Current
Topics | IASSNS-94/78, UMDPP-95-051, LATEX 16 pages (Invited Talk given at the
Second Journee Cosmologie, Observatorie de Paris, June 2-4, 1994.) | null | null | null | gr-qc hep-th | null | Concepts of quantum open systems and ideas of correlation dynamics in
nonequilibrium statistical mechanics, as well as methods of closed-time-path
effective action and influence functional in quantum field theory can be
usefully applied for the analysis of quantum statistical processes in
gravitation and cosmology. W... | [
{
"created": "Tue, 27 Sep 1994 02:50:35 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hu",
"B. L.",
"",
"Department of Physics, University of Maryland, College Park,\n MD and Institute for Advanced Study, Princeton, New Jersey, USA"
]
] | Concepts of quantum open systems and ideas of correlation dynamics in nonequilibrium statistical mechanics, as well as methods of closed-time-path effective action and influence functional in quantum field theory can be usefully applied for the analysis of quantum statistical processes in gravitation and cosmology. We ... |
2006.01580 | Serena Giardino | Serena Giardino and Vincenzo Salzano | Cosmological constraints on the Generalized Uncertainty Principle from
modified Friedmann equations | Minor changes, references added | Eur. Phys. J. C 81, 110 (2021) | 10.1140/epjc/s10052-021-08914-2 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Generalized Uncertainty Principle (GUP) has emerged in numerous attempts
to a theory of quantum gravity and predicts the existence of a minimum length
in Nature. In this work, we consider two cosmological models arising from
Friedmann equations modified by the GUP (in its linear and quadratic
formulations) and co... | [
{
"created": "Tue, 2 Jun 2020 13:10:17 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Jun 2020 09:48:54 GMT",
"version": "v2"
}
] | 2022-04-12 | [
[
"Giardino",
"Serena",
""
],
[
"Salzano",
"Vincenzo",
""
]
] | The Generalized Uncertainty Principle (GUP) has emerged in numerous attempts to a theory of quantum gravity and predicts the existence of a minimum length in Nature. In this work, we consider two cosmological models arising from Friedmann equations modified by the GUP (in its linear and quadratic formulations) and comp... |
gr-qc/0205104 | Jun'ichi Yokoyama | Jun'ichi Yokoyama | Vacuum selection by inflation as the origin of the dark energy | Honorable Mention, 2002 Gravity Research Foundation Essays | Int.J.Mod.Phys. D11 (2002) 1603-1608 | 10.1142/S0218271802002967 | OU-TAP 178 | gr-qc astro-ph hep-ph hep-th | null | I propose a new mechanism to account for the observed tiny but finite dark
energy in terms of a non-Abelian Higgs theory, which has infinitely many
perturbative vacua characterized by a winding number, in the framework of
inflationary cosmology. Inflation homogenizes field configuration and
practically realizes a per... | [
{
"created": "Fri, 24 May 2002 08:16:19 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Yokoyama",
"Jun'ichi",
""
]
] | I propose a new mechanism to account for the observed tiny but finite dark energy in terms of a non-Abelian Higgs theory, which has infinitely many perturbative vacua characterized by a winding number, in the framework of inflationary cosmology. Inflation homogenizes field configuration and practically realizes a pertu... |
1205.4201 | Albert Stebbins | Albert Stebbins | Measuring Space-Time Geometry over the Ages | Originally written for the Gravity Research Foundation 2012 Awards
for Essays on Gravitation and received Honorable Mention | International Journal of Modern Physics D Vol. 21, No. 11 (2012)
1242017 | 10.1142/S0218271812420175 | FERMILAB-PUB-12-240-A | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Theorists are often told to express things in the "observational plane". One
can do this for space-time geometry, considering "visual" observations of
matter in our universe by a single observer over time, with no assumptions
about isometries, initial conditions, nor any particular relation between
matter and geometr... | [
{
"created": "Fri, 18 May 2012 17:12:22 GMT",
"version": "v1"
}
] | 2012-11-20 | [
[
"Stebbins",
"Albert",
""
]
] | Theorists are often told to express things in the "observational plane". One can do this for space-time geometry, considering "visual" observations of matter in our universe by a single observer over time, with no assumptions about isometries, initial conditions, nor any particular relation between matter and geometry,... |
gr-qc/9412033 | Haret Rosu | H.C. Rosu | Notes on synchrotron radiation | 14 pp, LaTex, revised, a few references added | null | null | null | gr-qc | null | I comment on a number of theoretical issues related to magnetobremsstrahlung,
and especially on synchrotron radiation and Unruh (temperature) radiation, that
I consider of importance for the current progress towards a better
understanding of the stationary features of such fundamental radiation patterns
both in an ac... | [
{
"created": "Sun, 11 Dec 1994 03:22:00 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Dec 1994 22:38:00 GMT",
"version": "v2"
},
{
"created": "Tue, 30 Dec 1997 00:37:23 GMT",
"version": "v3"
}
] | 2008-02-03 | [
[
"Rosu",
"H. C.",
""
]
] | I comment on a number of theoretical issues related to magnetobremsstrahlung, and especially on synchrotron radiation and Unruh (temperature) radiation, that I consider of importance for the current progress towards a better understanding of the stationary features of such fundamental radiation patterns both in an acce... |
1107.1287 | Tim Koslowski A | Timothy Budd, Tim Koslowski | Shape Dynamics in 2+1 Dimensions | 15 pages, LaTeX, no figures | Gen. Rel. Grav. 44 (2012) 1615-1636 | 10.1007/s10714-012-1375-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Shape Dynamics is a formulation of General Relativity where refoliation
invariance is traded for local spatial conformal invariance. In this paper we
explicitly construct Shape Dynamics for a torus universe in 2+1 dimensions
through a linking gauge theory that ensures dynamical equivalence with General
Relativity. Th... | [
{
"created": "Thu, 7 Jul 2011 03:48:40 GMT",
"version": "v1"
}
] | 2013-08-06 | [
[
"Budd",
"Timothy",
""
],
[
"Koslowski",
"Tim",
""
]
] | Shape Dynamics is a formulation of General Relativity where refoliation invariance is traded for local spatial conformal invariance. In this paper we explicitly construct Shape Dynamics for a torus universe in 2+1 dimensions through a linking gauge theory that ensures dynamical equivalence with General Relativity. The ... |
1207.5282 | Shahar Hod | Shahar Hod | Resonance spectrum of near-extremal Kerr black holes in the eikonal
limit | 11 pages. arXiv admin note: substantial text overlap with
arXiv:0909.0314, arXiv:0811.3806 | Physics Letters B 715, 348 (2012) | 10.1016/j.physletb.2012.08.001 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The fundamental resonances of rapidly rotating Kerr black holes in the
eikonal limit are derived analytically. We show that there exists a critical
value, $\mu_c=\sqrt{{{15-\sqrt{193}}\over{2}}}$, for the dimensionless ratio
$\mu\equiv m/l$ between the azimuthal harmonic index $m$ and the spheroidal
harmonic index $l... | [
{
"created": "Mon, 23 Jul 2012 03:02:56 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Hod",
"Shahar",
""
]
] | The fundamental resonances of rapidly rotating Kerr black holes in the eikonal limit are derived analytically. We show that there exists a critical value, $\mu_c=\sqrt{{{15-\sqrt{193}}\over{2}}}$, for the dimensionless ratio $\mu\equiv m/l$ between the azimuthal harmonic index $m$ and the spheroidal harmonic index $l$ ... |
0912.4749 | Antonio Perreca | Antonio Perreca, Simon Chelkowski, Stefan Hild, Andreas Freise | Experimental demonstration of a Displacement noise Free Interferometry
scheme for gravitational wave detectors showing displacement noise reduction
at low frequencies | 5 pages, 3 figures | Phys.Rev.D81:062004,2010 | 10.1103/PhysRevD.81.062004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper reports an experimental demonstration of partial displacement
noise free laser interferometry in the gravitational wave detection band. The
used detuned Fabry-Perot cavity allows the isolation of the mimicked
gravitational wave signal from the displacement noise on the cavities input
mirror. By properly co... | [
{
"created": "Wed, 23 Dec 2009 22:14:41 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Feb 2010 17:14:36 GMT",
"version": "v2"
}
] | 2010-05-12 | [
[
"Perreca",
"Antonio",
""
],
[
"Chelkowski",
"Simon",
""
],
[
"Hild",
"Stefan",
""
],
[
"Freise",
"Andreas",
""
]
] | This paper reports an experimental demonstration of partial displacement noise free laser interferometry in the gravitational wave detection band. The used detuned Fabry-Perot cavity allows the isolation of the mimicked gravitational wave signal from the displacement noise on the cavities input mirror. By properly comb... |
1805.02668 | Kartik Prabhu | Kartik Prabhu, Leo C. Stein | Black hole scalar charge from a topological horizon integral in
Einstein-dilaton-Gauss-Bonnet gravity | v3: minor updates to references, published in PRD Rapid Comms. v2:
more direct proof of Thm. 1, added comments on non-linear coupling in Sec.3,
deleted Appendix B, updated references, version accepted in PRD Rapid Comms.
v1: 5 pages + 2 pages appendices, 1 figure | Phys. Rev. D 98, 021503 (2018) | 10.1103/PhysRevD.98.021503 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In theories of gravity that include a scalar field, a compact object's scalar
charge is a crucial quantity since it controls dipole radiation, which can be
strongly constrained by pulsar timing and gravitational wave observations.
However in most such theories, computing the scalar charge requires
simultaneously solv... | [
{
"created": "Mon, 7 May 2018 18:00:06 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Jun 2018 22:58:04 GMT",
"version": "v2"
},
{
"created": "Mon, 30 Jul 2018 19:31:16 GMT",
"version": "v3"
}
] | 2018-08-08 | [
[
"Prabhu",
"Kartik",
""
],
[
"Stein",
"Leo C.",
""
]
] | In theories of gravity that include a scalar field, a compact object's scalar charge is a crucial quantity since it controls dipole radiation, which can be strongly constrained by pulsar timing and gravitational wave observations. However in most such theories, computing the scalar charge requires simultaneously solvin... |
1311.4978 | Dario Modenini | Dario Modenini and Paolo Tortora | Pioneer 10 and 11 orbit determination analysis shows no discrepancy with
Newton-Einstein's laws of gravity | 34 pages, 10 figures | Phys. Rev. D 90, 022004 (2014) | 10.1103/PhysRevD.90.022004 | null | gr-qc physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present work describes the investigation of the navigation anomaly of
Pioneer 10 and 11 probes which became known as the Pioneer Anomaly. It appeared
as a linear drift in the Doppler data received by the spacecraft, which has
been ascribed to an approximately constant sunward acceleration of about $8.5
\times 10^... | [
{
"created": "Wed, 20 Nov 2013 08:23:05 GMT",
"version": "v1"
}
] | 2014-07-30 | [
[
"Modenini",
"Dario",
""
],
[
"Tortora",
"Paolo",
""
]
] | The present work describes the investigation of the navigation anomaly of Pioneer 10 and 11 probes which became known as the Pioneer Anomaly. It appeared as a linear drift in the Doppler data received by the spacecraft, which has been ascribed to an approximately constant sunward acceleration of about $8.5 \times 10^{-... |
2301.05007 | Israel Quiros | Israel Quiros | Gauge invariant theory of gravity in spacetime with gradient
nonmetricity: A possible resolution of several cosmological puzzles | 27 pages, 2 figures. This paper complements arXiv:2208.10048 | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we apply the symmetry principle in order to search for an
alternative unified explanation of several cosmological puzzles such as the
present stage of accelerated expansion of the Universe and the Hubble tension
issue, among others. We argue that Weyl gauge symmetry, being a manifest
symmetry of gauge i... | [
{
"created": "Tue, 3 Jan 2023 19:52:13 GMT",
"version": "v1"
}
] | 2023-01-13 | [
[
"Quiros",
"Israel",
""
]
] | In this paper we apply the symmetry principle in order to search for an alternative unified explanation of several cosmological puzzles such as the present stage of accelerated expansion of the Universe and the Hubble tension issue, among others. We argue that Weyl gauge symmetry, being a manifest symmetry of gauge inv... |
0804.2811 | Joao Faria Martins | Joao Faria Martins and Aleksandar Mikovic | Spin Foam Perturbation Theory for Three-Dimensional Quantum Gravity | Revised version. We prove that the first-order volume expectation
value vanishes and therefore we consider a dilute gas limit based on the
second-order perturbative correction. 32 pages, 16 Figures | Communications in Mathematical Physics, Volume 288, Number 2 /
June, 2009 | 10.1007/s00220-009-0776-6 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We formulate the spin foam perturbation theory for three-dimensional
Euclidean Quantum Gravity with a cosmological constant. We analyse the
perturbative expansion of the partition function in the dilute-gas limit and we
argue that the Baez conjecture stating that the number of possible distinct
topological classes of... | [
{
"created": "Thu, 17 Apr 2008 14:00:08 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Dec 2008 13:50:14 GMT",
"version": "v2"
}
] | 2017-05-23 | [
[
"Martins",
"Joao Faria",
""
],
[
"Mikovic",
"Aleksandar",
""
]
] | We formulate the spin foam perturbation theory for three-dimensional Euclidean Quantum Gravity with a cosmological constant. We analyse the perturbative expansion of the partition function in the dilute-gas limit and we argue that the Baez conjecture stating that the number of possible distinct topological classes of p... |
1011.6600 | Juan A. Valiente-Kroon | J. A. Valiente Kroon | Asymptotic simplicity and static data | 25 pages | null | 10.1007/s00023-011-0122-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present article considers time symmetric initial data sets for the vacuum
Einstein field equations which in a neighbourhood of infinity have the same
massless part as that of some static initial data set. It is shown that the
solutions to the regular finite initial value problem at spatial infinity for
this class... | [
{
"created": "Tue, 30 Nov 2010 16:33:26 GMT",
"version": "v1"
}
] | 2015-05-20 | [
[
"Kroon",
"J. A. Valiente",
""
]
] | The present article considers time symmetric initial data sets for the vacuum Einstein field equations which in a neighbourhood of infinity have the same massless part as that of some static initial data set. It is shown that the solutions to the regular finite initial value problem at spatial infinity for this class o... |
1807.00152 | Jonatan Herrera | I.P. Costa e Silva and J.L. Flores and J. Herrera | A novel notion of null infinity for c-boundaries and generalized black
holes | 32 pages, 4 figures. Included new reference | null | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give new definitions of null infinity and black hole in terms of causal
boundaries, applicable to any strongly causal spacetime $(M,g)$. These are
meant to extend the standard ones given in terms of conformal boundaries, and
use the new definitions to prove a classic result in black hole theory for this
more gener... | [
{
"created": "Sat, 30 Jun 2018 11:11:36 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Jul 2018 09:10:35 GMT",
"version": "v2"
}
] | 2018-07-10 | [
[
"Silva",
"I. P. Costa e",
""
],
[
"Flores",
"J. L.",
""
],
[
"Herrera",
"J.",
""
]
] | We give new definitions of null infinity and black hole in terms of causal boundaries, applicable to any strongly causal spacetime $(M,g)$. These are meant to extend the standard ones given in terms of conformal boundaries, and use the new definitions to prove a classic result in black hole theory for this more general... |
gr-qc/0612046 | Michael Bradley | Michael Bradley, Daniel Eriksson, Gyula Fodor, Istvan Racz | Slowly rotating fluid balls of Petrov type D | 15 pages, 8 figures, 1 table | Phys.Rev.D75:024013,2007 | 10.1103/PhysRevD.75.024013 | null | gr-qc | null | The second order perturbative field equations for slowly and rigidly rotating
perfect fluid balls of Petrov type D are solved numerically. It is found that
all the slowly and rigidly rotating perfect fluid balls up to second order,
irrespective of Petrov type, may be matched to a possibly non-asymptotically
flat stat... | [
{
"created": "Thu, 7 Dec 2006 15:46:21 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Bradley",
"Michael",
""
],
[
"Eriksson",
"Daniel",
""
],
[
"Fodor",
"Gyula",
""
],
[
"Racz",
"Istvan",
""
]
] | The second order perturbative field equations for slowly and rigidly rotating perfect fluid balls of Petrov type D are solved numerically. It is found that all the slowly and rigidly rotating perfect fluid balls up to second order, irrespective of Petrov type, may be matched to a possibly non-asymptotically flat statio... |
0808.3479 | Babur Mirza Dr. | Babur M. Mirza | Does Charge Contribute to the Frame Dragging of Spacetime? | 6 pages, 3 figures | Int.J.Theor.Phys.48:1164-1169,2009 | 10.1007/s10773-008-9889-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Electrically charged systems bound by a strong gravitational force can
sustain a huge amount of electric charge (up to 10^20C) against Coulomb
repulsion. General relativistically such systems form a stable hydrostatic
configuration both in the non-rotating and rotating cases. Here we study the
effects of electric cha... | [
{
"created": "Tue, 26 Aug 2008 10:28:33 GMT",
"version": "v1"
}
] | 2009-03-24 | [
[
"Mirza",
"Babur M.",
""
]
] | Electrically charged systems bound by a strong gravitational force can sustain a huge amount of electric charge (up to 10^20C) against Coulomb repulsion. General relativistically such systems form a stable hydrostatic configuration both in the non-rotating and rotating cases. Here we study the effects of electric charg... |
1208.5777 | Hideki Maeda | Hideki Maeda and Kei-ichi Maeda | Creation of the universe with a stealth scalar field | 7 pages; v2, references added; v3, creation of the open universe
added | Phys. Rev. D86 (2012) 124045 | 10.1103/PhysRevD.86.124045 | CECS-PHY-12/06 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The stealth scalar field is a non-trivial configuration without any
back-reaction to geometry, which is characteristic for non-minimally coupled
scalar fields. Studying the creation probability of the de Sitter universe with
a stealth scalar field by the Hartle and Hawking's semi-classical method, we
show that the ef... | [
{
"created": "Tue, 28 Aug 2012 20:04:11 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Sep 2012 21:45:56 GMT",
"version": "v2"
},
{
"created": "Tue, 11 Dec 2012 02:07:51 GMT",
"version": "v3"
}
] | 2013-02-15 | [
[
"Maeda",
"Hideki",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | The stealth scalar field is a non-trivial configuration without any back-reaction to geometry, which is characteristic for non-minimally coupled scalar fields. Studying the creation probability of the de Sitter universe with a stealth scalar field by the Hartle and Hawking's semi-classical method, we show that the effe... |
1401.7118 | Georgios Kraniotis | G. V. Kraniotis | Gravitational lensing and frame dragging of light in the Kerr-Newman and
the Kerr-Newman-(anti) de Sitter black hole spacetimes | updated version conforms to published version in General Relativity
and Gravitation. The final Publication is available at Springer via
http://dx.doi.org/10.1007/s10714-014-1818-8 | Gen. Relativ. Gravit. (2014) Vol.46, Number 11,1818 | 10.1007/s10714-014-1818-8 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The null geodesics that describe photon orbits in the spacetime of a rotating
electrically charged black hole (Kerr-Newman) are solved exactly including the
contribution from the cosmological constant. We derive elegant closed form
solutions for relativistic observables such as the deflection angle and frame
dragging... | [
{
"created": "Tue, 28 Jan 2014 09:30:47 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Feb 2014 14:56:05 GMT",
"version": "v2"
},
{
"created": "Sun, 9 Feb 2014 11:35:04 GMT",
"version": "v3"
},
{
"created": "Mon, 30 Jun 2014 09:35:58 GMT",
"version": "v4"
},
{
"cre... | 2015-02-27 | [
[
"Kraniotis",
"G. V.",
""
]
] | The null geodesics that describe photon orbits in the spacetime of a rotating electrically charged black hole (Kerr-Newman) are solved exactly including the contribution from the cosmological constant. We derive elegant closed form solutions for relativistic observables such as the deflection angle and frame dragging e... |
gr-qc/9806038 | Metin Gurses | Metin Gurses (Bilkent University) | Extremely Charged Static Dust Distributions in General Relativity | 8 pages, Latex, to appear in the proceedings of the International
Seminar on Mathematical Cosmology, Potsdam-Germany, March 30- April 4, 1998,
Eds. H.-J. Schmidt and M. Rainer, World Scientific, Singapore; some
references are corrected | null | null | null | gr-qc | null | Conformo static charged dust distributions are investigated in the framework
of General Relativity. Einstein's equations reduce to a nonlinear version of
Poisson's equations and Maxwell's eqations imply the equaltiy of the charge and
mass densities. An interior solution to the extreme Reissner-Nordstrom metric
is giv... | [
{
"created": "Mon, 8 Jun 1998 13:13:16 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jun 1998 12:36:59 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Gurses",
"Metin",
"",
"Bilkent University"
]
] | Conformo static charged dust distributions are investigated in the framework of General Relativity. Einstein's equations reduce to a nonlinear version of Poisson's equations and Maxwell's eqations imply the equaltiy of the charge and mass densities. An interior solution to the extreme Reissner-Nordstrom metric is given... |
2103.00556 | Nikita Avdeev | N. Avdeev, A.Toporensky | On viability of inflation in non-minimal kinetic coupling theory | 9 pages, 3 figures, typos corrected, references added, version
accepted for publication in Gravitation and Cosmology | null | 10.1134/S0202289321030038 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We consider initial conditions for inflation in non-minimal kinetic coupling
theory. If inflation is driven solely by kinetic term with no potential, the
resulting number of e-folds depends only upon initial velocity of the scalar
field $\dot \phi$. We write down the expression for the number of e-folds
explicitly, a... | [
{
"created": "Sun, 28 Feb 2021 16:34:45 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Mar 2021 20:39:17 GMT",
"version": "v2"
},
{
"created": "Fri, 14 May 2021 13:43:49 GMT",
"version": "v3"
},
{
"created": "Fri, 28 May 2021 23:46:01 GMT",
"version": "v4"
}
] | 2021-09-29 | [
[
"Avdeev",
"N.",
""
],
[
"Toporensky",
"A.",
""
]
] | We consider initial conditions for inflation in non-minimal kinetic coupling theory. If inflation is driven solely by kinetic term with no potential, the resulting number of e-folds depends only upon initial velocity of the scalar field $\dot \phi$. We write down the expression for the number of e-folds explicitly, and... |
2302.11493 | David McNutt | D. D. McNutt, A. A. Coley, and R. J. van den Hoogen | A frame based approach to computing symmetries with non-trivial isotropy
groups | 38 pages, submitted to JMP | null | 10.1063/5.0134596 | null | gr-qc math.DG | http://creativecommons.org/licenses/by/4.0/ | A frame approach to determining the most general solution admitting a desired
symmetry group has been examined previously in Riemannian and teleparallel
geometries with some success. In teleparallel geometries, one must determine
the general form of the frame and spin connection to generate a general
solution admitti... | [
{
"created": "Wed, 22 Feb 2023 17:07:46 GMT",
"version": "v1"
}
] | 2023-04-05 | [
[
"McNutt",
"D. D.",
""
],
[
"Coley",
"A. A.",
""
],
[
"Hoogen",
"R. J. van den",
""
]
] | A frame approach to determining the most general solution admitting a desired symmetry group has been examined previously in Riemannian and teleparallel geometries with some success. In teleparallel geometries, one must determine the general form of the frame and spin connection to generate a general solution admitting... |
2009.12187 | Jose Mar\'ia Ezquiaga | Jose Mar\'ia Ezquiaga and Miguel Zumalac\'arregui | Gravitational wave lensing beyond general relativity: birefringence,
echoes and shadows | Matches PRD version (only minor changes w.r.t. v1) | Phys. Rev. D 102, 124048 (2020) | 10.1103/PhysRevD.102.124048 | null | gr-qc astro-ph.CO astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves (GW), as light, are gravitationally lensed by intervening
matter, deflecting their trajectories, delaying their arrival and occasionally
producing multiple images. In theories beyond general relativity (GR), new
gravitational degrees of freedom add an extra layer of complexity and richness
to GW l... | [
{
"created": "Thu, 24 Sep 2020 15:54:29 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Nov 2020 15:27:33 GMT",
"version": "v2"
}
] | 2021-01-04 | [
[
"Ezquiaga",
"Jose María",
""
],
[
"Zumalacárregui",
"Miguel",
""
]
] | Gravitational waves (GW), as light, are gravitationally lensed by intervening matter, deflecting their trajectories, delaying their arrival and occasionally producing multiple images. In theories beyond general relativity (GR), new gravitational degrees of freedom add an extra layer of complexity and richness to GW len... |
1807.02594 | Massimo Tinto | Massimo Tinto and Olaf Hartwig | Time-Delay Interferometry and Clock-Noise Calibration | This article is 17 pages long and contains 2 figures | Phys. Rev. D 98, 042003 (2018) | 10.1103/PhysRevD.98.042003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Laser Interferometer Space Antenna is a joint ESA-NASA space-mission to
detect and study mHz cosmic gravitational waves. The trajectories followed by
its three spacecraft result in unequal- and time-varying arms, requiring use of
the Time-Delay Interferometry (TDI) post- processing technique to cancel the
laser p... | [
{
"created": "Sat, 7 Jul 2018 00:19:54 GMT",
"version": "v1"
}
] | 2018-08-29 | [
[
"Tinto",
"Massimo",
""
],
[
"Hartwig",
"Olaf",
""
]
] | The Laser Interferometer Space Antenna is a joint ESA-NASA space-mission to detect and study mHz cosmic gravitational waves. The trajectories followed by its three spacecraft result in unequal- and time-varying arms, requiring use of the Time-Delay Interferometry (TDI) post- processing technique to cancel the laser pha... |
1408.2885 | Niels Warburton | Niels Warburton | Self force on a scalar charge in Kerr spacetime: inclined circular
orbits | 17 pages, 5 figures. Updated to reflect published version | Phys. Rev. D 91, 024045 (2015) | 10.1103/PhysRevD.91.024045 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Accurately modeling astrophysical extreme-mass-ratio-insprials requires
calculating the gravitational self-force for orbits in Kerr spacetime. The
necessary calculation techniques are typically very complex and, consequently,
toy scalar-field models are often developed in order to establish a particular
calculational... | [
{
"created": "Wed, 13 Aug 2014 00:24:35 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Feb 2015 23:40:45 GMT",
"version": "v2"
}
] | 2015-02-04 | [
[
"Warburton",
"Niels",
""
]
] | Accurately modeling astrophysical extreme-mass-ratio-insprials requires calculating the gravitational self-force for orbits in Kerr spacetime. The necessary calculation techniques are typically very complex and, consequently, toy scalar-field models are often developed in order to establish a particular calculational a... |
2311.07376 | Miguel Barroso Varela | Miguel Barroso Varela and Hugo Rauch | Gravitational Waves on Charged Black Hole Backgrounds in Modified
Gravity | 22 pages, 1 figure | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The stability of Reissner-N\"ordstrom black holes with an extremal
mass-charge relation was determined by calculating the propagation speed of
gravitational waves on this background in an effective field theory (EFT) of
gravity. New results for metric components are shown, along with the
corresponding new extremal re... | [
{
"created": "Mon, 13 Nov 2023 14:52:52 GMT",
"version": "v1"
}
] | 2023-11-14 | [
[
"Varela",
"Miguel Barroso",
""
],
[
"Rauch",
"Hugo",
""
]
] | The stability of Reissner-N\"ordstrom black holes with an extremal mass-charge relation was determined by calculating the propagation speed of gravitational waves on this background in an effective field theory (EFT) of gravity. New results for metric components are shown, along with the corresponding new extremal rela... |
2106.14496 | Hari K | Hari K and Dawood Kothawala | Effect of tidal curvature on dynamics of accelerated probes | 11 pages, 3 figures | Phys. Rev. D 104, 064032 (2021) | 10.1103/PhysRevD.104.064032 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We obtain a remarkable semi-analytic expression concerning the role of purely
tidal curvature on accelerated probes, revealing some novel insights into the
role of absolute vs. tidal acceleration in the response of such probes. The key
quantity we evaluate is the relation between geodesic ($\tau_{\rm geod}$) and
prop... | [
{
"created": "Mon, 28 Jun 2021 09:24:46 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Oct 2021 05:51:53 GMT",
"version": "v2"
}
] | 2021-10-22 | [
[
"K",
"Hari",
""
],
[
"Kothawala",
"Dawood",
""
]
] | We obtain a remarkable semi-analytic expression concerning the role of purely tidal curvature on accelerated probes, revealing some novel insights into the role of absolute vs. tidal acceleration in the response of such probes. The key quantity we evaluate is the relation between geodesic ($\tau_{\rm geod}$) and proper... |
gr-qc/9910037 | Remo Garattini | Remo Garattini | Entropy and the cosmological constant: a spacetime-foam approach | LaTeX file uses espcrc2.sty, 4 pages. Talk given at the Third Meeting
on Constrained Dynamics and Quantum Gravity, Villasimius (Sardinia),
September 13-17, 1999. New Reference included | Nucl.Phys.Proc.Suppl.88:297-300,2000 | 10.1016/S0920-5632(00)00789-1 | null | gr-qc hep-th | null | A simple model of spacetime foam, made by N wormholes in a semiclassical
approximation, is taken under examination. The Casimir-like energy of the
quantum fluctuation of such a model and its probability of being realized are
computed. Implications on the Bekenstein-Hawking entropy and the cosmological
constant are co... | [
{
"created": "Mon, 11 Oct 1999 16:34:34 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Oct 1999 10:02:22 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Garattini",
"Remo",
""
]
] | A simple model of spacetime foam, made by N wormholes in a semiclassical approximation, is taken under examination. The Casimir-like energy of the quantum fluctuation of such a model and its probability of being realized are computed. Implications on the Bekenstein-Hawking entropy and the cosmological constant are cons... |
1010.5844 | Ariel Edery | Ariel Edery and Benjamin Constantineau | Extremal black holes, gravitational entropy and nonstationary metric
fields | 12 pages, 2 figures. To appear in Class. and Quant. Gravity. Based on
an essay selected for honorable mention in the 2010 gravity research
foundation essay competition | Class.Quant.Grav.28:045003,2011 | 10.1088/0264-9381/28/4/045003 | NSF-KITP-10-062 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that extremal black holes have zero entropy by pointing out a simple
fact: they are time-independent throughout the spacetime and correspond to a
single classical microstate. We show that non-extremal black holes, including
the Schwarzschild black hole, contain a region hidden behind the event horizon
where a... | [
{
"created": "Thu, 28 Oct 2010 02:44:42 GMT",
"version": "v1"
},
{
"created": "Sun, 23 Jan 2011 05:51:52 GMT",
"version": "v2"
}
] | 2011-03-18 | [
[
"Edery",
"Ariel",
""
],
[
"Constantineau",
"Benjamin",
""
]
] | We show that extremal black holes have zero entropy by pointing out a simple fact: they are time-independent throughout the spacetime and correspond to a single classical microstate. We show that non-extremal black holes, including the Schwarzschild black hole, contain a region hidden behind the event horizon where all... |
2211.05524 | Conghua Liu | Conghua Liu and Jin Wang | The topological natures of the Gauss-Bonnet black hole in AdS space | null | PhysRevD.107.064023 (2023) | 10.1103/PhysRevD.107.064023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the recent proposal [Phys. Rev. Lett. 129, 191101 (2022)], the black holes
were viewed as topological thermodynamic defects by using the generalized
off-shell free energy. In this paper, we follow such proposal to study the
local and global topological natures of the Gauss-Bonnet black holes in AdS
space. The loca... | [
{
"created": "Thu, 10 Nov 2022 12:37:04 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Dec 2022 13:14:09 GMT",
"version": "v2"
},
{
"created": "Mon, 20 Feb 2023 03:55:22 GMT",
"version": "v3"
}
] | 2023-03-14 | [
[
"Liu",
"Conghua",
""
],
[
"Wang",
"Jin",
""
]
] | In the recent proposal [Phys. Rev. Lett. 129, 191101 (2022)], the black holes were viewed as topological thermodynamic defects by using the generalized off-shell free energy. In this paper, we follow such proposal to study the local and global topological natures of the Gauss-Bonnet black holes in AdS space. The local ... |
2306.02958 | Elias C. Vagenas | Saurya Das, Gaetano Lambiase, Elias C. Vagenas | Constraining quantum fluctuations of spacetime foam from BBN | 5 pages, 1 figure, to appear in EPJ Plus | Eur. Phys. J. Plus 138, 523 (2023) | 10.1140/epjp/s13360-023-04168-x | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | A possibility to describe quantum gravitational fluctuations of the spacetime
background is provided by virtual $D$-branes. These effects may induce a tiny
violation of the Lorentz invariance (as well as a possible violation of the
equivalence principle). In this framework, we study the formation of light
elements in... | [
{
"created": "Mon, 5 Jun 2023 15:25:16 GMT",
"version": "v1"
}
] | 2023-06-19 | [
[
"Das",
"Saurya",
""
],
[
"Lambiase",
"Gaetano",
""
],
[
"Vagenas",
"Elias C.",
""
]
] | A possibility to describe quantum gravitational fluctuations of the spacetime background is provided by virtual $D$-branes. These effects may induce a tiny violation of the Lorentz invariance (as well as a possible violation of the equivalence principle). In this framework, we study the formation of light elements in t... |
2011.14152 | Gaoping Long | Gaoping Long and Chun-Yen Lin | Geometric parametrization of $SO(D+1)$ phase space of all dimensional
loop quantum gravity | null | Phys. Rev. D 103, 086016 (2021) | 10.1103/PhysRevD.103.086016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To clarify the geometric information encoded in the $SO(D+1)$ spin-network
states for the higher dimensional loop quantum gravity, we generalize the
twisted-geometry parametrization of the $SU(2)$ phase space for $(1+3)$
dimensional loop quantum gravity to that of the $SO(D+1)$ phase space for the
all-dimensional cas... | [
{
"created": "Sat, 28 Nov 2020 15:44:31 GMT",
"version": "v1"
}
] | 2021-04-28 | [
[
"Long",
"Gaoping",
""
],
[
"Lin",
"Chun-Yen",
""
]
] | To clarify the geometric information encoded in the $SO(D+1)$ spin-network states for the higher dimensional loop quantum gravity, we generalize the twisted-geometry parametrization of the $SU(2)$ phase space for $(1+3)$ dimensional loop quantum gravity to that of the $SO(D+1)$ phase space for the all-dimensional case.... |
1412.6108 | Shahar Hod | Shahar Hod | Onset of superradiant instabilities in the composed
Kerr-black-hole-mirror bomb | 19 pages. This is an extended version of the one published in Physics
Letters B 736, 398 (2014) | Physics Letters B 736, 398 (2014) | 10.1016/j.physletb.2014.07.049 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was first pointed out by Press and Teukolsky that a system composed of a
spinning Kerr black hole surrounded by a reflecting mirror may develop
instabilities. The physical mechanism responsible for the development of these
exponentially growing instabilities is the superradiant amplification of
bosonic fields conf... | [
{
"created": "Thu, 18 Dec 2014 21:00:15 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Hod",
"Shahar",
""
]
] | It was first pointed out by Press and Teukolsky that a system composed of a spinning Kerr black hole surrounded by a reflecting mirror may develop instabilities. The physical mechanism responsible for the development of these exponentially growing instabilities is the superradiant amplification of bosonic fields confin... |
gr-qc/0304082 | G. Papini | G. Papini | Quantum physics in inertial and gravitational fields | 25 pages,1 figure,to appear in "Relativity in Rotating Frames | null | null | null | gr-qc | null | Covariant generalizations of well-known wave equations predict the existence
of inertial-gravitational effects for a variety of quantum systems that range
from Bose-Einstein condensates to particles in accelerators. Additional effects
arise in models that incorporate Born reciprocity principle and the notion of a
max... | [
{
"created": "Tue, 22 Apr 2003 18:54:25 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Papini",
"G.",
""
]
] | Covariant generalizations of well-known wave equations predict the existence of inertial-gravitational effects for a variety of quantum systems that range from Bose-Einstein condensates to particles in accelerators. Additional effects arise in models that incorporate Born reciprocity principle and the notion of a maxim... |
1108.5145 | Cristian Stelea | Cristian Stelea, Kristin Schleich, and Donald Witt | Thermodynamics of non-extremal Kaluza-Klein multi-black holes in five
dimensions | 16 pages, 1 figure; v.2 added a new section and new references | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a solution-generating method, we derive an exact solution of the
Einstein's field equations in five dimensions describing multi-black hole
configurations. More specifically, this solution describes systems of
non-extremal static black holes with Kaluza-Klein asymptotics. As expected, we
find that, in general, t... | [
{
"created": "Thu, 25 Aug 2011 18:02:16 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Nov 2014 10:58:39 GMT",
"version": "v2"
}
] | 2014-12-01 | [
[
"Stelea",
"Cristian",
""
],
[
"Schleich",
"Kristin",
""
],
[
"Witt",
"Donald",
""
]
] | Using a solution-generating method, we derive an exact solution of the Einstein's field equations in five dimensions describing multi-black hole configurations. More specifically, this solution describes systems of non-extremal static black holes with Kaluza-Klein asymptotics. As expected, we find that, in general, the... |
1305.3756 | Francisco Lobo | Salvatore Capozziello, Tiberiu Harko, Francisco S. N. Lobo, Gonzalo J.
Olmo | Hybrid modified gravity unifying local tests, galactic dynamics and
late-time cosmic acceleration | 8 pages. Received an Honorable Mention in the Gravity Research
Foundation Essay Contest 2013. V2: references added; version to appear in the
International Journal of Modern Physics D | Int.J.Mod.Phys.D22:1342006,2013 | 10.1142/S0218271813420066 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The non-equivalence between the metric and Palatini formalisms of $f(R)$
gravity is an intriguing feature of these theories. However, in the recently
proposed hybrid metric-Palatini gravity, consisting of the superposition of the
metric Einstein-Hilbert Lagrangian with an $f(\cal R)$ term constructed \`{a}
la Palatin... | [
{
"created": "Thu, 16 May 2013 10:50:23 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Aug 2013 11:29:24 GMT",
"version": "v2"
}
] | 2013-08-23 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Olmo",
"Gonzalo J.",
""
]
] | The non-equivalence between the metric and Palatini formalisms of $f(R)$ gravity is an intriguing feature of these theories. However, in the recently proposed hybrid metric-Palatini gravity, consisting of the superposition of the metric Einstein-Hilbert Lagrangian with an $f(\cal R)$ term constructed \`{a} la Palatini,... |
gr-qc/0306050 | K. Rajesh Nayak | K. Rajesh Nayak, S. V. Dhurandhar, A. Pai and J-Y Vinet | Optimising the directional sensitivity of LISA | 16 pages, 8 figures, submitted to Phys Rev D | Phys.Rev.D68:122001,2003; Erratum-ibid.D70:049901,2004 | 10.1103/PhysRevD.68.122001 10.1103/PhysRevD.70.049901 | null | gr-qc | null | It was shown in a previous work that the data combinations canceling laser
frequency noise constitute a module - the module of syzygies. The cancellation
of laser frequency noise is crucial for obtaining the requisite sensitivity for
LISA. In this work we show how the sensitivity of LISA can be optimised for a
monoch... | [
{
"created": "Thu, 12 Jun 2003 13:51:39 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Nayak",
"K. Rajesh",
""
],
[
"Dhurandhar",
"S. V.",
""
],
[
"Pai",
"A.",
""
],
[
"Vinet",
"J-Y",
""
]
] | It was shown in a previous work that the data combinations canceling laser frequency noise constitute a module - the module of syzygies. The cancellation of laser frequency noise is crucial for obtaining the requisite sensitivity for LISA. In this work we show how the sensitivity of LISA can be optimised for a monochro... |
2210.00284 | Laszlo Arpad Gergely | Zolt\'an Keresztes, M\'arton T\'apai, L\'aszl\'o \'Arp\'ad Gergely | Spin and quadrupolar effects in the secular evolution of precessing
compact binaries with black hole, neutron star, gravastar, or boson star
components | 24 pages, 6 figures | Phys. Rev. D 103, 084024 (2021) | 10.1103/PhysRevD.103.084024 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We discuss precessing compact binaries on eccentric orbit with gravastar,
black hole, neutron star, or boson star components. We derive secular evolution
equations to second post-Newtonian--order accuracy, with leading-order
spin-orbit, spin-spin, and mass quadrupole-monopole contributions. The emerging
closed system... | [
{
"created": "Sat, 1 Oct 2022 14:04:56 GMT",
"version": "v1"
}
] | 2022-10-04 | [
[
"Keresztes",
"Zoltán",
""
],
[
"Tápai",
"Márton",
""
],
[
"Gergely",
"László Árpád",
""
]
] | We discuss precessing compact binaries on eccentric orbit with gravastar, black hole, neutron star, or boson star components. We derive secular evolution equations to second post-Newtonian--order accuracy, with leading-order spin-orbit, spin-spin, and mass quadrupole-monopole contributions. The emerging closed system o... |
1709.06497 | Jan Ambjorn | J. Ambjorn and Y. Watabiki | A modified Friedmann equation | Clarifying comment on page 4 | Mod. Phys. Lett. A, Vol. 32, No. 40 (2017) 1750224 | 10.1142/S0217732317502248 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We recently formulated a model of the universe based on an underlying
W3-symmetry. It allows the creation of the universe from nothing and the
creation of baby universes and wormholes for spacetimes of dimension 2, 3, 4, 6
and 10. Here we show that the classical large time and large space limit of
these universes is ... | [
{
"created": "Tue, 19 Sep 2017 16:03:08 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Oct 2017 15:55:05 GMT",
"version": "v2"
}
] | 2017-12-20 | [
[
"Ambjorn",
"J.",
""
],
[
"Watabiki",
"Y.",
""
]
] | We recently formulated a model of the universe based on an underlying W3-symmetry. It allows the creation of the universe from nothing and the creation of baby universes and wormholes for spacetimes of dimension 2, 3, 4, 6 and 10. Here we show that the classical large time and large space limit of these universes is on... |
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