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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/9707021 | null | Andrzej Krasinski | Rotating dust solutions of Einstein's equations with 3-dimensional
symmetry groups, Part 3: All Killing fields linearly independent of
u^{\alpha} and w^{\alpha} | One missing piece, signaled after eq. (10.7), is added after (10.21).
List of corrections: In (3.7) wrong subscript in vorticity; In (3.10) wrong
subscript in last term of g_{23}; In (4.23) wrong formulae for g_{12} and
g_{22}; In (7.17) missing factor in velocity; In (7.18) one wrong factor in
g_{22}; In (10.9... | J.Math.Phys. 39 (1998) 2148-2179 | 10.1063/1.532302 | null | gr-qc | null | This is the third and last part of a series of 3 papers. Using the same
method and the same coordinates as in parts 1 and 2, rotating dust solutions of
Einstein's equations are investigated that possess 3-dimensional symmetry
groups, under the assumption that each of the Killing vectors is linearly
independent of vel... | [
{
"created": "Wed, 9 Jul 1997 15:36:50 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Feb 2001 20:34:27 GMT",
"version": "v2"
}
] | 2009-10-30 | [
[
"Krasinski",
"Andrzej",
""
]
] | This is the third and last part of a series of 3 papers. Using the same method and the same coordinates as in parts 1 and 2, rotating dust solutions of Einstein's equations are investigated that possess 3-dimensional symmetry groups, under the assumption that each of the Killing vectors is linearly independent of veloc... |
gr-qc/0006048 | Filipe Bonjour | Filipe Bonjour and P.S. Letelier | Fluids of Vortices And Dark Matter | REVTeX, 9 PostScript figures with psfig | Gen.Rel.Grav. 34 (2002) 439-448 | null | null | gr-qc astro-ph | null | By considering full-field string solutions of the Abelian--Higgs model, we
modify the model of a fluid of strings (which is composed of Nambu strings) to
obtain a model for a ``fluid of vortices.'' With this model, and following
closely Soleng's proposal of a fluid of strings as the source of a Milgrom-type
correctio... | [
{
"created": "Tue, 13 Jun 2000 19:49:06 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bonjour",
"Filipe",
""
],
[
"Letelier",
"P. S.",
""
]
] | By considering full-field string solutions of the Abelian--Higgs model, we modify the model of a fluid of strings (which is composed of Nambu strings) to obtain a model for a ``fluid of vortices.'' With this model, and following closely Soleng's proposal of a fluid of strings as the source of a Milgrom-type correction ... |
1310.5434 | Eugen Radu | Olga Kichakova, Jutta Kunz and Eugen Radu | Spinning gauged boson stars in anti-de Sitter spacetime | 15 pages, 4 figures | null | 10.1016/j.physletb.2013.11.061 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study axially symmetric solutions of the Einstein-Maxwell-Klein-Gordon
equations describing spinning gauged boson stars in a 3+1 dimensional
asymptotically AdS spacetime. These smooth horizonless solutions possess an
electric charge and a magnetic dipole moment, their angular momentum being
proportional to the ele... | [
{
"created": "Mon, 21 Oct 2013 06:48:12 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Kichakova",
"Olga",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Radu",
"Eugen",
""
]
] | We study axially symmetric solutions of the Einstein-Maxwell-Klein-Gordon equations describing spinning gauged boson stars in a 3+1 dimensional asymptotically AdS spacetime. These smooth horizonless solutions possess an electric charge and a magnetic dipole moment, their angular momentum being proportional to the elect... |
2407.02325 | Alexander Florian Jercher | Roukaya Dekhil, Alexander F. Jercher, Andreas G. A. Pithis | Phase transitions in TGFT: Landau-Ginzburg analysis of the causally
complete Lorentzian Barrett-Crane model | 41+22 pages, 6 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is expected that continuum spacetime emerges via phase transition in the
tensorial group field theory (TGFT) approach to quantum gravity. Recent work on
the application of Landau-Ginzburg mean-field theory to progressively realistic
TGFT models has demonstrated how phase transitions can be realized therein.
Here, ... | [
{
"created": "Tue, 2 Jul 2024 14:53:34 GMT",
"version": "v1"
}
] | 2024-07-04 | [
[
"Dekhil",
"Roukaya",
""
],
[
"Jercher",
"Alexander F.",
""
],
[
"Pithis",
"Andreas G. A.",
""
]
] | It is expected that continuum spacetime emerges via phase transition in the tensorial group field theory (TGFT) approach to quantum gravity. Recent work on the application of Landau-Ginzburg mean-field theory to progressively realistic TGFT models has demonstrated how phase transitions can be realized therein. Here, we... |
gr-qc/0402084 | Jean-Paul Mbelek | J. P. Mbelek | Motion of a test body in the presence of an external scalar field which
respects the weak equivalence principle | 13 pages, proceedings of the international conference "Conceptions of
space in physics", 29 September - 3 October 1997, Les Houches (France),
edited by Z. A. Golda, M. Heller and M. Lachieze-Rey | Acta Cosmologica 24:127-148,1998 | null | null | gr-qc astro-ph | null | It is shown that the main contribution to the rotational curve of a spiral
galaxy may be due essentially to the interaction, in the general relativistic
spacetime, of the galactic matter with a very light long range scalar field
which respects the weak equivalence principle. The comparison of the
theoretical results ... | [
{
"created": "Thu, 19 Feb 2004 15:55:28 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Mbelek",
"J. P.",
""
]
] | It is shown that the main contribution to the rotational curve of a spiral galaxy may be due essentially to the interaction, in the general relativistic spacetime, of the galactic matter with a very light long range scalar field which respects the weak equivalence principle. The comparison of the theoretical results wi... |
1912.05145 | Tao Zhu | Qiang Wu and Tao Zhu | Inflationary Cosmology with Quantum Gravitational Effects and the
Swampland Conjectures | 7 pages, 2 figures | Commun.Theor.Phys. 71 (2019) no.9, 1115-1120 | 10.1088/0253-6102/71/9/1115 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently proposed two swampland criteria that arising from string theory
landscape lead to the important challenge of the realization of single-field
inflationary models. Especially one of swampland criteria which implies a large
tensor-to-scalar ratio is strongly in tension with recent observational
results. In this... | [
{
"created": "Wed, 11 Dec 2019 07:23:27 GMT",
"version": "v1"
}
] | 2019-12-12 | [
[
"Wu",
"Qiang",
""
],
[
"Zhu",
"Tao",
""
]
] | Recently proposed two swampland criteria that arising from string theory landscape lead to the important challenge of the realization of single-field inflationary models. Especially one of swampland criteria which implies a large tensor-to-scalar ratio is strongly in tension with recent observational results. In this p... |
1109.3443 | Mir Faizal | Mir Faizal | Perturbative Quantum Gravity on Complex Spacetime | 9 pages, 0 figures, accepted for publication in Phys. Lett. B | Phys.Lett.B705:120,2011 | 10.1016/j.physletb.2011.09.062 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we will study non-anticommutative perturbative quantum gravity
on spacetime with a complex metric. After analysing the BRST symmetry of this
non-anticommutative perturbative quantum gravity, we will also analyse the
effect of shifting all the fields. We will construct a Lagrangian density which
is invar... | [
{
"created": "Thu, 15 Sep 2011 19:50:05 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Sep 2011 14:59:19 GMT",
"version": "v2"
}
] | 2015-05-30 | [
[
"Faizal",
"Mir",
""
]
] | In this paper we will study non-anticommutative perturbative quantum gravity on spacetime with a complex metric. After analysing the BRST symmetry of this non-anticommutative perturbative quantum gravity, we will also analyse the effect of shifting all the fields. We will construct a Lagrangian density which is invaria... |
2309.04962 | ChengGang Shao | Cai-Ying Shao, Cong Zhang, Wei Zhang, Cheng-Gang Shao | Scalar fields around a loop quantum gravity black hole in de Sitter
spacetime: Quasinormal modes, late-time tails and strong cosmic censorship | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Loop quantum gravity, as one branch of quantum gravity, holds the potential
to explore the fundamental nature of black holes. Recently, according to the
quantum Oppenheimer-Snyder model in loop quantum cosmology, a novel loop
quantum corrected black hole in de Sitter spacetime has been discovered. Here,
we first inve... | [
{
"created": "Sun, 10 Sep 2023 08:32:49 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Feb 2024 03:33:07 GMT",
"version": "v2"
}
] | 2024-02-26 | [
[
"Shao",
"Cai-Ying",
""
],
[
"Zhang",
"Cong",
""
],
[
"Zhang",
"Wei",
""
],
[
"Shao",
"Cheng-Gang",
""
]
] | Loop quantum gravity, as one branch of quantum gravity, holds the potential to explore the fundamental nature of black holes. Recently, according to the quantum Oppenheimer-Snyder model in loop quantum cosmology, a novel loop quantum corrected black hole in de Sitter spacetime has been discovered. Here, we first invest... |
gr-qc/0412037 | Alcides Garat | Alcides Garat | Tetrads in Geometrodynamics | null | J.Math.Phys. 46 (2005) 102502 | 10.1063/1.2049167 | null | gr-qc hep-th math-ph math.MP | null | A new tetrad is introduced within the framework of geometrodynamics for
non-null electromagnetic fields. This tetrad diagonalizes the electromagnetic
stress-energy tensor and allows for maximum simplification of the expression of
the electromagnetic field. The Einstein-Maxwell equations will also be
simplified.
| [
{
"created": "Wed, 8 Dec 2004 17:03:30 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Aug 2005 15:01:26 GMT",
"version": "v2"
}
] | 2012-07-25 | [
[
"Garat",
"Alcides",
""
]
] | A new tetrad is introduced within the framework of geometrodynamics for non-null electromagnetic fields. This tetrad diagonalizes the electromagnetic stress-energy tensor and allows for maximum simplification of the expression of the electromagnetic field. The Einstein-Maxwell equations will also be simplified. |
gr-qc/9410016 | Takashi Tachizawa | T. Tachizawa, K. Maeda, and T. Torii | Non-Abelian Black Holes and Catastrophe Theory II: Charged Type | 23 pages, LaTeX (Figures are available on request as hard copies.)
WU-AP/40/93 | Phys.Rev. D51 (1995) 4054-4066 | 10.1103/PhysRevD.51.4054 | null | gr-qc astro-ph hep-th | null | We reanalyze the gravitating monopole and its black hole solutions in the
Einstein-Yang-Mills-Higgs system and we discuss their stabilities from the
point of view of catastrophe theory. Although these non-trivial solutions
exhibit fine and complicated structures, we find that stability is
systematically understood vi... | [
{
"created": "Thu, 13 Oct 1994 04:07:25 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Oct 1994 06:16:54 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Tachizawa",
"T.",
""
],
[
"Maeda",
"K.",
""
],
[
"Torii",
"T.",
""
]
] | We reanalyze the gravitating monopole and its black hole solutions in the Einstein-Yang-Mills-Higgs system and we discuss their stabilities from the point of view of catastrophe theory. Although these non-trivial solutions exhibit fine and complicated structures, we find that stability is systematically understood via ... |
gr-qc/9809009 | Ying Jiang | Yishi Duan, Ying Jiang | Can torsion play a role in angular momentum conservation law? | 11 pages, LaTeX | Gen.Rel.Grav. 31 (1999) 3-12 | 10.1023/A:1018855102407 | null | gr-qc | null | In Einstein-Cartan theory, by the use of the general Noether theorem, the
general covariant angular-momentum conservation law is obtained with the
respect to the local Lorentz transformations. The corresponding conservative
Noether current is interpreted as the angular momentum tensor of the
gravity-matter system inc... | [
{
"created": "Wed, 2 Sep 1998 09:17:02 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Nov 1998 01:48:46 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Duan",
"Yishi",
""
],
[
"Jiang",
"Ying",
""
]
] | In Einstein-Cartan theory, by the use of the general Noether theorem, the general covariant angular-momentum conservation law is obtained with the respect to the local Lorentz transformations. The corresponding conservative Noether current is interpreted as the angular momentum tensor of the gravity-matter system inclu... |
0809.0957 | Vladimir Dzhunushaliev | Vladimir Dzhunushaliev | Quantum wormhole as a Ricci flow | addition in Introduction | IJGMMP, 6, 1033-1046 (2009) | null | null | gr-qc hep-th math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The idea is considered that a quantum wormhole in a spacetime foam can be
described as a Ricci flow. In this interpretation the Ricci flow is a
statistical system and every metric in the Ricci flow is a microscopical state.
The probability density of the microscopical state is connected with a
Perelman's functional o... | [
{
"created": "Fri, 5 Sep 2008 05:45:45 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Oct 2008 04:01:44 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Nov 2008 05:33:14 GMT",
"version": "v3"
},
{
"created": "Mon, 2 Feb 2009 05:01:38 GMT",
"version": "v4"
}
] | 2009-10-18 | [
[
"Dzhunushaliev",
"Vladimir",
""
]
] | The idea is considered that a quantum wormhole in a spacetime foam can be described as a Ricci flow. In this interpretation the Ricci flow is a statistical system and every metric in the Ricci flow is a microscopical state. The probability density of the microscopical state is connected with a Perelman's functional of ... |
gr-qc/0601043 | Stephen P. Boughn | Tony Rothman and Stephen Boughn | Can Gravitons Be Detected? | This version as appeared in Foundations of Physics | Found.Phys. 36 (2006) 1801-1825 | 10.1007/s10701-006-9081-9 | null | gr-qc astro-ph | null | Freeman Dyson has questioned whether any conceivable experiment in the real
universe can detect a single graviton. If not, is it meaningful to talk about
gravitons as physical entities? We attempt to answer Dyson's question and find
it is possible concoct an idealized thought experiment capable of detecting one
gravi... | [
{
"created": "Wed, 11 Jan 2006 20:14:12 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Jan 2006 18:21:39 GMT",
"version": "v2"
},
{
"created": "Sat, 2 Dec 2006 16:33:25 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Rothman",
"Tony",
""
],
[
"Boughn",
"Stephen",
""
]
] | Freeman Dyson has questioned whether any conceivable experiment in the real universe can detect a single graviton. If not, is it meaningful to talk about gravitons as physical entities? We attempt to answer Dyson's question and find it is possible concoct an idealized thought experiment capable of detecting one gravito... |
2304.11186 | Francois Larrouturou | Luc Blanchet, Guillaume Faye, Quentin Henry, Fran\c{c}ois Larrouturou
and David Trestini | Gravitational Wave Flux and Quadrupole Modes from Quasi-Circular
Non-Spinning Compact Binaries to the Fourth Post-Newtonian Order | 32 pages, no figure. v2: reference of the companion letter updated.
v3: post-referee version. v4: bibliographic typo corrected | Phys. Rev. D 108, 064041 (2023) | 10.1103/PhysRevD.108.064041 | DESY-23-044 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | This article provides the details on the technical derivation of the
gravitational waveform and total gravitational-wave energy flux of non-spinning
compact binary systems to the 4PN (fourth post-Newtonian) order beyond the
Einstein quadrupole formula. In particular: (i) we overview the link between
the radiative mul... | [
{
"created": "Fri, 21 Apr 2023 18:00:08 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Apr 2023 06:56:07 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Jun 2023 16:49:29 GMT",
"version": "v3"
},
{
"created": "Sat, 30 Sep 2023 10:40:56 GMT",
"version": "v4"
}
] | 2023-10-03 | [
[
"Blanchet",
"Luc",
""
],
[
"Faye",
"Guillaume",
""
],
[
"Henry",
"Quentin",
""
],
[
"Larrouturou",
"François",
""
],
[
"Trestini",
"David",
""
]
] | This article provides the details on the technical derivation of the gravitational waveform and total gravitational-wave energy flux of non-spinning compact binary systems to the 4PN (fourth post-Newtonian) order beyond the Einstein quadrupole formula. In particular: (i) we overview the link between the radiative multi... |
1503.08284 | Dr. Bikash Chandra Paul | B. C. Paul and A. S. Majumdar | Emergent Universe with Interacting fluids and Generalized Second Law of
Thermodynamics | 8 pages, 1 figure accepted in Classical and Quantum Gravity (2015) | Classical and Quantum Gravity, 32 (2015) 112001 | 10.1088/0264-9381/32/11/115001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the emergent universe scenario in the presence of interacting
fluids. The non-linear equation of state (EoS) considered in the general theory
of relativity for obtaining emergent universe is effectively a cosmological
model with a composition of three fluids. In this paper we consider two models
to rea... | [
{
"created": "Sat, 28 Mar 2015 09:34:57 GMT",
"version": "v1"
},
{
"created": "Wed, 6 May 2015 08:59:25 GMT",
"version": "v2"
},
{
"created": "Sun, 17 May 2015 12:30:16 GMT",
"version": "v3"
}
] | 2015-05-20 | [
[
"Paul",
"B. C.",
""
],
[
"Majumdar",
"A. S.",
""
]
] | We investigate the emergent universe scenario in the presence of interacting fluids. The non-linear equation of state (EoS) considered in the general theory of relativity for obtaining emergent universe is effectively a cosmological model with a composition of three fluids. In this paper we consider two models to reali... |
gr-qc/9311014 | Khatsymovsky | V.Khatsymovsky | First class constraints in Regge calculus | 6 pages, Plain LaTeX, Preprint UUITP-25/93 | null | null | null | gr-qc | null | Considered are I class constraints in the tetrad-connection formulation of
Regge calculus. One of these is well-known Gauss law which generates rotations
in the local frames associated with tetrahedrons in the continuous time 3D
section. Another two types of these are new, satisfied by definition of Regge
manifold an... | [
{
"created": "Mon, 8 Nov 1993 16:44:33 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Khatsymovsky",
"V.",
""
]
] | Considered are I class constraints in the tetrad-connection formulation of Regge calculus. One of these is well-known Gauss law which generates rotations in the local frames associated with tetrahedrons in the continuous time 3D section. Another two types of these are new, satisfied by definition of Regge manifold and ... |
1301.7198 | Victor Shchigolev Konstantinovich | V.K. Shchigolev | Fractional Einstein-Hilbert Action Cosmology | 12 pages, 8 figures; some references added | Modern Physics Letters A Vol. 28, No. 14 (2013) 1350056 | 10.1142/S0217732313500569 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new type of cosmological model derived from the fractional
variational principle when it is applied to the gravitational sector of action
functional. In contrast to the fractional cosmological model developed earlier
by the author from a fractional total action, in our new model the continuity
equation r... | [
{
"created": "Wed, 30 Jan 2013 11:10:29 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Feb 2013 15:37:40 GMT",
"version": "v2"
}
] | 2013-04-30 | [
[
"Shchigolev",
"V. K.",
""
]
] | We propose a new type of cosmological model derived from the fractional variational principle when it is applied to the gravitational sector of action functional. In contrast to the fractional cosmological model developed earlier by the author from a fractional total action, in our new model the continuity equation rem... |
1910.04290 | Pavel Krtous | Pavel Krtou\v{s}, Andrei Zelnikov | Self-force on a static particle near a black hole | 15 pages, 3 figures [v3: minor changes, references added] | Phys. Rev. D 102, 024065 (2020) | 10.1103/PhysRevD.102.024065 | Alberta Thy 12-19 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the self-force acting on a static charged point-like particle near a
Schwarzschild black hole. We obtain the point-like particle as a limit of a
spacetime describing a big neutral black hole with a small charged massive
object nearby. The massive object is modeled by a black hole or a naked
singularity. In t... | [
{
"created": "Wed, 9 Oct 2019 22:57:54 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Oct 2019 03:20:11 GMT",
"version": "v2"
},
{
"created": "Wed, 22 Jul 2020 21:28:57 GMT",
"version": "v3"
}
] | 2020-07-24 | [
[
"Krtouš",
"Pavel",
""
],
[
"Zelnikov",
"Andrei",
""
]
] | We study the self-force acting on a static charged point-like particle near a Schwarzschild black hole. We obtain the point-like particle as a limit of a spacetime describing a big neutral black hole with a small charged massive object nearby. The massive object is modeled by a black hole or a naked singularity. In thi... |
0807.2806 | James Ryan | Bianca Dittrich, James P. Ryan | Phase space descriptions for simplicial 4d geometries | corrected structure constants, several references add | Class.Quant.Grav.28:065006,2011 | 10.1088/0264-9381/28/6/065006 | pi-qg-86 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Starting from the canonical phase space for discretised (4d) BF-theory, we
implement a canonical version of the simplicity constraints and construct phase
spaces for simplicial geometries. Our construction allows us to study the
connection between different versions of Regge calculus and approaches using
connection v... | [
{
"created": "Thu, 17 Jul 2008 15:30:11 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jun 2010 15:19:04 GMT",
"version": "v2"
}
] | 2011-03-03 | [
[
"Dittrich",
"Bianca",
""
],
[
"Ryan",
"James P.",
""
]
] | Starting from the canonical phase space for discretised (4d) BF-theory, we implement a canonical version of the simplicity constraints and construct phase spaces for simplicial geometries. Our construction allows us to study the connection between different versions of Regge calculus and approaches using connection var... |
2006.10080 | Raissa Mendes | Bernardo F. de Aguiar and Raissa F. P. Mendes | Highly compact neutron stars and screening mechanisms. I. Equilibrium
and stability | 12 pages, 7 figures | Phys. Rev. D 102, 024064 (2020) | 10.1103/PhysRevD.102.024064 | null | gr-qc astro-ph.CO astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modified theories of gravity that offer viable models for dark energy often
rely on mechanisms that screen their effects in high density environments. From
this perspective, it would appear that, once solar system constraints are
satisfied, these theories would predict a trivial phenomenology for (much
denser) neutro... | [
{
"created": "Wed, 17 Jun 2020 18:02:09 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jul 2020 20:08:30 GMT",
"version": "v2"
}
] | 2020-07-24 | [
[
"de Aguiar",
"Bernardo F.",
""
],
[
"Mendes",
"Raissa F. P.",
""
]
] | Modified theories of gravity that offer viable models for dark energy often rely on mechanisms that screen their effects in high density environments. From this perspective, it would appear that, once solar system constraints are satisfied, these theories would predict a trivial phenomenology for (much denser) neutron ... |
2104.01643 | Yaser Ahmadi | Y. Ahmadi | Interaction of massless minimally coupled scalar field with spinor field
in de Sitter universe | 7 pages, 1 figure | International Journal of Modern Physics D, Vol. 30, No. 03,
2150015 (2021) | 10.1142/S0218271821500152 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The interaction of massless minimally coupled scalar field and spinor field $
\left( \Psi + \Phi_m \rightarrow \Psi + \Phi_m \right) $ is investigated and
the behavior of interaction and scattering matrix in Minkowski limit is
studied. It is seen that the massless minimally coupled scalar field operator,
the interact... | [
{
"created": "Sun, 4 Apr 2021 16:37:12 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Apr 2021 08:18:45 GMT",
"version": "v2"
}
] | 2021-04-08 | [
[
"Ahmadi",
"Y.",
""
]
] | The interaction of massless minimally coupled scalar field and spinor field $ \left( \Psi + \Phi_m \rightarrow \Psi + \Phi_m \right) $ is investigated and the behavior of interaction and scattering matrix in Minkowski limit is studied. It is seen that the massless minimally coupled scalar field operator, the interactio... |
1704.04435 | S Habib Mazharimousavi | S. Habib Mazharimousavi and M. Halilsoy | Note on a thin-shell wormhole in extremal Reissner-Nordstr\"om geometry | 4 pages, 5 figures | Int. J. Mod. Phys. D (2017) | 10.1142/S0218271818500281 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the cold horizon of the extremal Reissner-Nordstr\"{o}m can be
considered as the throat of a thin-shell wormhole with zero total exotic matter
and positive angular pressure. Such a wormhole is physical and stable against
radial perturbations provided an appropriate perfect fluid exists at the
throat.
| [
{
"created": "Wed, 12 Apr 2017 20:23:04 GMT",
"version": "v1"
}
] | 2018-01-11 | [
[
"Mazharimousavi",
"S. Habib",
""
],
[
"Halilsoy",
"M.",
""
]
] | We show that the cold horizon of the extremal Reissner-Nordstr\"{o}m can be considered as the throat of a thin-shell wormhole with zero total exotic matter and positive angular pressure. Such a wormhole is physical and stable against radial perturbations provided an appropriate perfect fluid exists at the throat. |
2404.09063 | Alexander Zhidenko | R. A. Konoplya, A. Zhidenko | Dymnikova black hole from an infinite tower of higher-curvature
corrections | 6 pages | Phys. Lett. B856 (2024) 138945 | 10.1016/j.physletb.2024.138945 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, in [arXiv:2403.04827], it was demonstrated that various regular
black hole metrics can be derived within a theory featuring an infinite number
of higher curvature corrections to General Relativity. Moreover, truncating
this infinite series at the first few orders already yields a reliable
approximation of t... | [
{
"created": "Sat, 13 Apr 2024 19:13:39 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Aug 2024 20:46:20 GMT",
"version": "v2"
}
] | 2024-08-16 | [
[
"Konoplya",
"R. A.",
""
],
[
"Zhidenko",
"A.",
""
]
] | Recently, in [arXiv:2403.04827], it was demonstrated that various regular black hole metrics can be derived within a theory featuring an infinite number of higher curvature corrections to General Relativity. Moreover, truncating this infinite series at the first few orders already yields a reliable approximation of the... |
1904.06020 | Ka Yue Alvin Li | Alvin K. Y. Li, Rico K. L. Lo, Surabhi Sachdev, C.L. Chan, E.T. Lin,
Tjonnie G. F. Li and Alan J. Weinstein | Targeted Sub-threshold Search for Strongly-lensed Gravitational-wave
Events | Accepted and published in Phys. Rev. D, Vol 107, Iss 12, 15 June 2023 | Phys. Rev. D, Vol 107, Iss. 12, 15 June 2023 | 10.1103/PhysRevD.107.123014 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Strong gravitational lensing of gravitational waves can produce duplicate
signals separated in time with different amplitudes. We consider the case in
which strong lensing produces superthreshold gravitational-wave events and
weaker subthreshold signals buried in the noise background. We present the
GstLAL-based Targ... | [
{
"created": "Fri, 12 Apr 2019 03:07:42 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Dec 2019 18:00:25 GMT",
"version": "v2"
},
{
"created": "Wed, 30 Dec 2020 03:15:39 GMT",
"version": "v3"
},
{
"created": "Fri, 9 Apr 2021 18:07:03 GMT",
"version": "v4"
},
{
"cre... | 2023-06-16 | [
[
"Li",
"Alvin K. Y.",
""
],
[
"Lo",
"Rico K. L.",
""
],
[
"Sachdev",
"Surabhi",
""
],
[
"Chan",
"C. L.",
""
],
[
"Lin",
"E. T.",
""
],
[
"Li",
"Tjonnie G. F.",
""
],
[
"Weinstein",
"Alan J.",
""
]
] | Strong gravitational lensing of gravitational waves can produce duplicate signals separated in time with different amplitudes. We consider the case in which strong lensing produces superthreshold gravitational-wave events and weaker subthreshold signals buried in the noise background. We present the GstLAL-based Target... |
gr-qc/9901016 | null | Pedro F. Gonzalez-Diaz and Luis J. Garay | Nonorientable spacetime tunneling | 11 pages, RevTex, Accepted in Phys. Rev. D | Phys.Rev. D59 (1999) 064026 | 10.1103/PhysRevD.59.064026 | IMAFF-RCA-99-02 | gr-qc | null | Misner space is generalized to have the nonorientable topology of a Klein
bottle, and it is shown that in a classical spacetime with multiply connected
space slices having such a topology, closed timelike curves are formed.
Different regions on the Klein bottle surface can be distinguished which are
separated by appa... | [
{
"created": "Thu, 7 Jan 1999 12:50:30 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Gonzalez-Diaz",
"Pedro F.",
""
],
[
"Garay",
"Luis J.",
""
]
] | Misner space is generalized to have the nonorientable topology of a Klein bottle, and it is shown that in a classical spacetime with multiply connected space slices having such a topology, closed timelike curves are formed. Different regions on the Klein bottle surface can be distinguished which are separated by appare... |
2303.15696 | Arianna Renzini | Arianna I. Renzini, Alba Romero-Rodrguez, Colm Talbot, Max Lalleman,
Shivaraj Kandhasamy, Kevin Turbang, Sylvia Biscoveanu, Katarina Martinovic,
Patrick Meyers, Leo Tsukada, Kamiel Janssens, Derek Davis, Andrew Matas,
Philip Charlton, Guo-Chin Liu, Irina Dvorkin, Sharan Banagiri, Sukanta Bose,
Thomas Callister,... | pygwb: Python-based library for gravitational-wave background searches | 32 pages, 14 figures | null | 10.3847/1538-4357/acd775 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The collection of gravitational waves (GWs) that are either too weak or too
numerous to be individually resolved is commonly referred to as the
gravitational-wave background (GWB). A confident detection and model-driven
characterization of such a signal will provide invaluable information about the
evolution of the U... | [
{
"created": "Tue, 28 Mar 2023 02:49:28 GMT",
"version": "v1"
}
] | 2023-07-26 | [
[
"Renzini",
"Arianna I.",
""
],
[
"Romero-Rodrguez",
"Alba",
""
],
[
"Talbot",
"Colm",
""
],
[
"Lalleman",
"Max",
""
],
[
"Kandhasamy",
"Shivaraj",
""
],
[
"Turbang",
"Kevin",
""
],
[
"Biscoveanu",
"Sylvia",
... | The collection of gravitational waves (GWs) that are either too weak or too numerous to be individually resolved is commonly referred to as the gravitational-wave background (GWB). A confident detection and model-driven characterization of such a signal will provide invaluable information about the evolution of the Uni... |
1210.3509 | Andr\'es Ace\~na | Andr\'es E. Ace\~na and Sergio Dain | Stable isoperimetric surfaces in super-extreme Reissner-Nordstr\"om | 8 pages, 1 figure | null | 10.1088/0264-9381/30/4/045013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study isoperimetric surfaces in the Reissner-Nordstr\"om spacetime, with
emphasis on the cuasilocal inequality between area and charge. We analyze the
stability of the isoperimetric spheres and we found that there is a lower bound
on the area in terms of the charge, and that the inequality is saturated in the
tran... | [
{
"created": "Fri, 12 Oct 2012 13:16:47 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Oct 2012 17:32:19 GMT",
"version": "v2"
}
] | 2015-06-11 | [
[
"Aceña",
"Andrés E.",
""
],
[
"Dain",
"Sergio",
""
]
] | We study isoperimetric surfaces in the Reissner-Nordstr\"om spacetime, with emphasis on the cuasilocal inequality between area and charge. We analyze the stability of the isoperimetric spheres and we found that there is a lower bound on the area in terms of the charge, and that the inequality is saturated in the transi... |
gr-qc/0701017 | Peter Kramer | Peter Kramer | Harmonic polynomials for expanding the fluctuations of the Cosmic
Microwave Background: The Poincare and the 3-sphere model | 12 pages | J. Geom. Symmetry Phys. 6:55-66,2006 | null | null | gr-qc | null | Fluctuations of the Cosmic Microwave Background CMB are observed by the WMAP.
When expanded into the harmonic eigenmodes of the space part of a cosmological
model, they provide insight into the large-scale topology of space. All
harmonic polynomials on the multiply connected dodecahedral Poincare space are
constructe... | [
{
"created": "Mon, 1 Jan 2007 19:01:50 GMT",
"version": "v1"
}
] | 2010-04-28 | [
[
"Kramer",
"Peter",
""
]
] | Fluctuations of the Cosmic Microwave Background CMB are observed by the WMAP. When expanded into the harmonic eigenmodes of the space part of a cosmological model, they provide insight into the large-scale topology of space. All harmonic polynomials on the multiply connected dodecahedral Poincare space are constructed.... |
gr-qc/0507013 | Christopher J. Fewster | C.J. Fewster and T.A. Roman | On wormholes with arbitrarily small quantities of exotic matter | 30 pages, 2 figures | Phys.Rev. D72 (2005) 044023 | 10.1103/PhysRevD.72.044023 | null | gr-qc hep-th | null | Recently several models of traversable wormholes have been proposed which
require only arbitrarily small amounts of negative energy to hold them open
against self-collapse. If the exotic matter is assumed to be provided by
quantum fields, then quantum inequalities can be used to place constraints on
the negative ener... | [
{
"created": "Mon, 4 Jul 2005 14:54:11 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Fewster",
"C. J.",
""
],
[
"Roman",
"T. A.",
""
]
] | Recently several models of traversable wormholes have been proposed which require only arbitrarily small amounts of negative energy to hold them open against self-collapse. If the exotic matter is assumed to be provided by quantum fields, then quantum inequalities can be used to place constraints on the negative energy... |
2204.03509 | Peter O Hess | Leila Maghlaoui and Peter O. Hess | Consequences of a minimal length in a pseudo-complex extension of
General Relativity | 23 pages, 11 figures | null | 10.1142/S0218271822500687 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The effects of a minimal length are investigated within an algebraically
extended theory of General Relativity (GR). Former attempts, to include a
minimal length in GR are first resumed, with a conformal factor of the metric
as a consequence. Effective potentials for various black hole masses (as ratios
to the minima... | [
{
"created": "Thu, 7 Apr 2022 15:24:20 GMT",
"version": "v1"
}
] | 2022-09-07 | [
[
"Maghlaoui",
"Leila",
""
],
[
"Hess",
"Peter O.",
""
]
] | The effects of a minimal length are investigated within an algebraically extended theory of General Relativity (GR). Former attempts, to include a minimal length in GR are first resumed, with a conformal factor of the metric as a consequence. Effective potentials for various black hole masses (as ratios to the minimal ... |
gr-qc/0605146 | Monika Winklmeier | Monika Winklmeier, Osanobu Yamada | Spectral Analysis of Radial Dirac Operators in the Kerr-Newman Metric
and its Applications to Time-periodic Solutions | 15 pages | J.Math.Phys.47:102503,2006 | 10.1063/1.2358394 | null | gr-qc | null | We investigate the existence of time-periodic solutions of the Dirac equation
in the Kerr-Newman background metric. To this end, the solutions are expanded
in a Fourier series with respect to the time variable $t$ and the Chandrasekhar
separation ansatz is applied so that the question of existence of a
time-periodic ... | [
{
"created": "Tue, 30 May 2006 17:38:38 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Oct 2006 15:19:31 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Winklmeier",
"Monika",
""
],
[
"Yamada",
"Osanobu",
""
]
] | We investigate the existence of time-periodic solutions of the Dirac equation in the Kerr-Newman background metric. To this end, the solutions are expanded in a Fourier series with respect to the time variable $t$ and the Chandrasekhar separation ansatz is applied so that the question of existence of a time-periodic so... |
1511.01805 | Abhishek Basak | Abhishek Basak, Oph\'elia Fabre and S. Shankaranarayanan | Cosmological perturbation of Unimodular Gravity and General Relativity
are identical | 24 pages, no figures | Gen Relativ Gravit (2016) 48:123 | 10.1007/s10714-016-2116-4 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Unimodular Gravity (UG) is a restricted version of General Relativity (GR) in
which the determinant of the metric is a fixed function and the field equations
are given by the trace-free part of the full Einstein equations. The background
equations in UG and GR are identical. It was recently claimed that, the first
or... | [
{
"created": "Thu, 5 Nov 2015 16:39:36 GMT",
"version": "v1"
}
] | 2016-09-02 | [
[
"Basak",
"Abhishek",
""
],
[
"Fabre",
"Ophélia",
""
],
[
"Shankaranarayanan",
"S.",
""
]
] | Unimodular Gravity (UG) is a restricted version of General Relativity (GR) in which the determinant of the metric is a fixed function and the field equations are given by the trace-free part of the full Einstein equations. The background equations in UG and GR are identical. It was recently claimed that, the first orde... |
1808.09656 | Soumya Jana | Soumya Jana (PRL, Ahmedabad), Rajibul Shaikh (TIFR, Mumbai), Sudipta
Sarkar (IIT, Gandhinagar) | Overcharging black holes and cosmic censorship in Eddington-inspired
Born-Infeld gravity | 24 pages, 5 figures. Title changed, published version | Phys. Rev. D 98, 124039 (2018) | 10.1103/PhysRevD.98.124039 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Eddington-inspired Born-Infeld (EiBI) gravity is a modification of the
theory of general relativity inspired by the nonlinear Born-Infeld
electrodynamics. The theory is described by a series of higher curvature terms
added to the Einstein-Hilbert action with the parameter $\kappa$. The EiBI
gravity has several in... | [
{
"created": "Wed, 29 Aug 2018 06:47:55 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Jan 2019 06:30:29 GMT",
"version": "v2"
}
] | 2019-01-14 | [
[
"Jana",
"Soumya",
"",
"PRL, Ahmedabad"
],
[
"Shaikh",
"Rajibul",
"",
"TIFR, Mumbai"
],
[
"Sarkar",
"Sudipta",
"",
"IIT, Gandhinagar"
]
] | The Eddington-inspired Born-Infeld (EiBI) gravity is a modification of the theory of general relativity inspired by the nonlinear Born-Infeld electrodynamics. The theory is described by a series of higher curvature terms added to the Einstein-Hilbert action with the parameter $\kappa$. The EiBI gravity has several inte... |
gr-qc/0207054 | Akihiro Ishibashi | Akihiro Ishibashi and Akio Hosoya | Naked Singularity and Thunderbolt | 12 pages, 1 figure, references added, to appear in Phys. Rev. D | Phys.Rev. D66 (2002) 104016 | 10.1103/PhysRevD.66.104016 | YITP-02-44 | gr-qc hep-th | null | We consider quantum theoretical effects of the sudden change of the boundary
conditions which mimics the occurrence of naked singularities. For a simple
demonstration, we study a massless scalar field in $(1 + 1)$-dimensional
Minkowski spacetime with finite spatial interval. We calculate the vacuum
expectation value ... | [
{
"created": "Mon, 15 Jul 2002 12:20:57 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Oct 2002 19:22:10 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Ishibashi",
"Akihiro",
""
],
[
"Hosoya",
"Akio",
""
]
] | We consider quantum theoretical effects of the sudden change of the boundary conditions which mimics the occurrence of naked singularities. For a simple demonstration, we study a massless scalar field in $(1 + 1)$-dimensional Minkowski spacetime with finite spatial interval. We calculate the vacuum expectation value of... |
1906.09364 | Kiyoshi Shiraishi | Takuya Maki, Kiyoshi Shiraishi, Satoru Hirenzaki | Charged black holes with Yang-Mills hair and their thermodynamics | 8 pages, 4 figures | Physical Review & Research International, Volume 3, No. 3, pp.
228--235 (2013) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new class of the black hole solutions of
Einstein-Maxwell-Yang-Mills theory. These solutions have both U(1) charge and
Yang-Mills hair. We also investigate the thermodynamic properties.
| [
{
"created": "Sat, 22 Jun 2019 01:55:07 GMT",
"version": "v1"
}
] | 2019-07-05 | [
[
"Maki",
"Takuya",
""
],
[
"Shiraishi",
"Kiyoshi",
""
],
[
"Hirenzaki",
"Satoru",
""
]
] | We present a new class of the black hole solutions of Einstein-Maxwell-Yang-Mills theory. These solutions have both U(1) charge and Yang-Mills hair. We also investigate the thermodynamic properties. |
1109.6891 | Ahmad Shariati | N. Jafari, A. Shariati | A Projective Interpretation of Some Doubly Special Relativity Theories | null | Phys. Rev. D 84, 065038 (2011) | 10.1103/PhysRevD.84.065038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A class of projective actions of the orthogonal group on the projective space
is being studied. It is shown that the Fock--Lorentz, and Magueijo--Smolin
transformations known as Doubly Special Relativity are such transformations.
The formalism easily lead to new type transformations.
| [
{
"created": "Fri, 30 Sep 2011 16:42:07 GMT",
"version": "v1"
}
] | 2015-03-19 | [
[
"Jafari",
"N.",
""
],
[
"Shariati",
"A.",
""
]
] | A class of projective actions of the orthogonal group on the projective space is being studied. It is shown that the Fock--Lorentz, and Magueijo--Smolin transformations known as Doubly Special Relativity are such transformations. The formalism easily lead to new type transformations. |
2111.11451 | Tetsuya Hashimoto | Kaustubha Sen, Tetsuya Hashimoto, Tomotsugu Goto, Seong Jin Kim, Bo
Han Chen, Daryl Joe D. Santos, Simon C. C. Ho, Alvina Y. L. On, Ting-Yi Lu,
and Tiger Y.-Y. Hsiao | Constraining violations of the Weak Equivalence Principle Using CHIME
FRBs | Accepted for publication in Monthly Notices of the Royal Astronomical
Society | null | 10.1093/mnras/stab3344 | null | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein's General Relativity (GR) is the basis of modern astronomy and
astrophysics. Testing the validity of basic assumptions of GR is important. In
this work, we test a possible violation of the Weak Equivalence Principle
(WEP), i.e., there might be a time-lag between photons of different frequencies
caused by the... | [
{
"created": "Mon, 22 Nov 2021 19:00:04 GMT",
"version": "v1"
}
] | 2021-12-22 | [
[
"Sen",
"Kaustubha",
""
],
[
"Hashimoto",
"Tetsuya",
""
],
[
"Goto",
"Tomotsugu",
""
],
[
"Kim",
"Seong Jin",
""
],
[
"Chen",
"Bo Han",
""
],
[
"Santos",
"Daryl Joe D.",
""
],
[
"Ho",
"Simon C. C.",
""
],
... | Einstein's General Relativity (GR) is the basis of modern astronomy and astrophysics. Testing the validity of basic assumptions of GR is important. In this work, we test a possible violation of the Weak Equivalence Principle (WEP), i.e., there might be a time-lag between photons of different frequencies caused by the e... |
1005.0091 | Alex Giacomini | Fabrizio Canfora, Alex Giacomini | BTZ-like black holes in even dimensional Lovelock theories | LaTeX, 22 pages, references added, typos corrected, minor changes in
the text. No figures | Phys.Rev.D82:024022,2010 | 10.1103/PhysRevD.82.024022 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper, a new class of black hole solutions is constructed in
even dimensional Lovelock Born-Infeld theory. These solutions are interesting
since, in some respects, they are closer to black hole solutions of an odd
dimensional Lovelock Chern-Simons theory than to the more usual black hole
solutions in e... | [
{
"created": "Sat, 1 May 2010 17:00:36 GMT",
"version": "v1"
},
{
"created": "Thu, 6 May 2010 23:34:14 GMT",
"version": "v2"
}
] | 2015-03-17 | [
[
"Canfora",
"Fabrizio",
""
],
[
"Giacomini",
"Alex",
""
]
] | In the present paper, a new class of black hole solutions is constructed in even dimensional Lovelock Born-Infeld theory. These solutions are interesting since, in some respects, they are closer to black hole solutions of an odd dimensional Lovelock Chern-Simons theory than to the more usual black hole solutions in eve... |
2003.10407 | Valentin Boyanov | Carlos Barcel\'o, Valentin Boyanov, Ra\'ul Carballo-Rubio, Luis J.
Garay | Asymptotic horizon formation, spacetime stretching and causality | 12 pages, 5 figures; v2: minor changes to match published version | Phys. Rev. D 102, 045001 (2020) | 10.1103/PhysRevD.102.045001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we analyse asymptotically flat, spherically symmetric spacetimes
in which an event horizon is present without any trapped surfaces. We identify
two types of such spacetimes, each related to the asymptotic behaviour (in
time) of one of the two degrees of freedom of the metric. We study the causal
structur... | [
{
"created": "Mon, 23 Mar 2020 17:30:25 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Dec 2020 15:22:11 GMT",
"version": "v2"
}
] | 2020-12-07 | [
[
"Barceló",
"Carlos",
""
],
[
"Boyanov",
"Valentin",
""
],
[
"Carballo-Rubio",
"Raúl",
""
],
[
"Garay",
"Luis J.",
""
]
] | In this work we analyse asymptotically flat, spherically symmetric spacetimes in which an event horizon is present without any trapped surfaces. We identify two types of such spacetimes, each related to the asymptotic behaviour (in time) of one of the two degrees of freedom of the metric. We study the causal structure ... |
gr-qc/0007078 | Anzhong Wang | P.R.C.T. Pereira and Anzhong Wang | Dynamics of Rotating Cylindrical Shells in General Relativity | Typed in Revtex, including three figures. To appear in General
Relativity and Gravity | Gen.Rel.Grav. 32 (2000) 2189-2218 | 10.1023/A:1001954604324 | null | gr-qc | null | Cylindrical spacetimes with rotation are studied using the Newmann-Penrose
formulas. By studying null geodesic deviations the physical meaning of each
component of the Riemann tensor is given. These spacetimes are further extended
to include rotating dynamic shells, and the general expression of the surface
energy-mo... | [
{
"created": "Fri, 28 Jul 2000 19:53:41 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Pereira",
"P. R. C. T.",
""
],
[
"Wang",
"Anzhong",
""
]
] | Cylindrical spacetimes with rotation are studied using the Newmann-Penrose formulas. By studying null geodesic deviations the physical meaning of each component of the Riemann tensor is given. These spacetimes are further extended to include rotating dynamic shells, and the general expression of the surface energy-mome... |
gr-qc/9802037 | Khokhlov | Dmitri Khokhlov | The model of the universe with two spaces | LaTeX, 3 pages | null | null | null | gr-qc | null | The model of the homogenous and isotropic universe with two spaces is
considered. The background space is a coordinate system of reference and
defines the behaviour of the universe. The other space characterizes the
gravity of the matter of the universe. In the presented model, the first
derivative of the scale facto... | [
{
"created": "Mon, 16 Feb 1998 15:31:20 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Khokhlov",
"Dmitri",
""
]
] | The model of the homogenous and isotropic universe with two spaces is considered. The background space is a coordinate system of reference and defines the behaviour of the universe. The other space characterizes the gravity of the matter of the universe. In the presented model, the first derivative of the scale factor ... |
1812.07994 | Chikun Ding | Chikun Ding | Gravitational quasinormal modes of black holes in Einstein-aether theory | 14 pages,8 figures, accepted by Nucl. Phys. B. arXiv admin note:
substantial text overlap with arXiv:1707.06747 | Nucl. Phys. B 938 736 (2019) | 10.1016/j.nuclphysb.2018.12.005 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The local Lorentz violation (LV) in gravity sector should show itself in
derivation of the characteristic quasinormal modes (QNMs) of black hole mergers
from their general relativity case. In this paper, I study QNMs of the
gravitational field perturbations to Einstein-aether black holes and, at first
compare them to... | [
{
"created": "Tue, 18 Dec 2018 00:45:58 GMT",
"version": "v1"
}
] | 2018-12-20 | [
[
"Ding",
"Chikun",
""
]
] | The local Lorentz violation (LV) in gravity sector should show itself in derivation of the characteristic quasinormal modes (QNMs) of black hole mergers from their general relativity case. In this paper, I study QNMs of the gravitational field perturbations to Einstein-aether black holes and, at first compare them to t... |
gr-qc/0508076 | Euro Spallucci | Euro Spallucci, Michele Fontanini | Zero-point length, extra-dimensions and string T-duality | 28 pages, Latex, no figures; two references added | Invited contribution to ``New Developments in String Theory
Research'', S.A. Grece ed.,Nova Science Publ. (2005) | null | null | gr-qc hep-th | null | In this paper, we are going to put in a single consistent framework
apparently unrelated pieces of information, i.e. zero-point length,
extra-dimensions, string T-duality. More in details we are going to introduce a
modified Kaluza-Klein theory interpolating between (high-energy) string theory
and (low-energy) quantu... | [
{
"created": "Thu, 18 Aug 2005 13:09:03 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Aug 2005 13:05:46 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Spallucci",
"Euro",
""
],
[
"Fontanini",
"Michele",
""
]
] | In this paper, we are going to put in a single consistent framework apparently unrelated pieces of information, i.e. zero-point length, extra-dimensions, string T-duality. More in details we are going to introduce a modified Kaluza-Klein theory interpolating between (high-energy) string theory and (low-energy) quantum ... |
gr-qc/0612081 | Marcus Ansorg | Marcus Ansorg | Multi-Domain Spectral Method for Initial Data of Arbitrary Binaries in
General Relativity | 16 pages, 10 figures, published version | Class.Quant.Grav.24:S1-S14,2007 | 10.1088/0264-9381/24/12/S01 | null | gr-qc | null | We present a multi-domain spectral method to compute initial data of binary
systems in General Relativity. By utilizing adapted conformal coordinates, the
vacuum region exterior to the gravitational sources is divided up into two
subdomains within which the spectral expansion of the field quantities is
carried out. I... | [
{
"created": "Wed, 13 Dec 2006 13:49:50 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Sep 2007 07:44:15 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Ansorg",
"Marcus",
""
]
] | We present a multi-domain spectral method to compute initial data of binary systems in General Relativity. By utilizing adapted conformal coordinates, the vacuum region exterior to the gravitational sources is divided up into two subdomains within which the spectral expansion of the field quantities is carried out. If ... |
gr-qc/0409085 | Yuan-Zhong Zhang | Kamal Kanti Nandi, Yuan-Zhong Zhang, and Rong-Gen Cai | Acoustic Wormholes | 14 pages | null | null | null | gr-qc | null | Acoustic analogs of static, spherically symmetric massive traversable
Lorentzian wormholes are constructed as a {\em formal} extension of acoustic
black holes. The method is straightforward but the idea is interesting in
itself. The analysis leads to a new acoustic invariant for the massless
counterpart of the Einste... | [
{
"created": "Wed, 22 Sep 2004 09:34:01 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Sep 2004 08:28:20 GMT",
"version": "v2"
},
{
"created": "Mon, 27 Sep 2004 06:43:43 GMT",
"version": "v3"
},
{
"created": "Mon, 1 Nov 2004 02:32:37 GMT",
"version": "v4"
},
{
"cr... | 2007-05-23 | [
[
"Nandi",
"Kamal Kanti",
""
],
[
"Zhang",
"Yuan-Zhong",
""
],
[
"Cai",
"Rong-Gen",
""
]
] | Acoustic analogs of static, spherically symmetric massive traversable Lorentzian wormholes are constructed as a {\em formal} extension of acoustic black holes. The method is straightforward but the idea is interesting in itself. The analysis leads to a new acoustic invariant for the massless counterpart of the Einstein... |
1805.00332 | Mahouton J. Stephane Houndjo Dr | M. G. Ganiou, P. H. Logbo, M. J. S. Houndjo and J. Tossa | Cosmological Study of Autonomous Dynamical Systems in Modified
Tele-Parallel Gravity | 25 pages and 5 figures. arXiv admin note: text overlap with
arXiv:1711.02230 by other authors | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cosmological approaches of autonomous dynamical system in the framework of
$f(T)$ gravity are investigated in this paper. Our methods applied to flat
Friedmann-Robertson-Walker equations in $f(T)$ gravity, consist to extract
dynamical systems whose time-dependence is contained in a single parameter $m$
depending on t... | [
{
"created": "Wed, 25 Apr 2018 11:29:50 GMT",
"version": "v1"
}
] | 2018-05-02 | [
[
"Ganiou",
"M. G.",
""
],
[
"Logbo",
"P. H.",
""
],
[
"Houndjo",
"M. J. S.",
""
],
[
"Tossa",
"J.",
""
]
] | Cosmological approaches of autonomous dynamical system in the framework of $f(T)$ gravity are investigated in this paper. Our methods applied to flat Friedmann-Robertson-Walker equations in $f(T)$ gravity, consist to extract dynamical systems whose time-dependence is contained in a single parameter $m$ depending on the... |
1104.2273 | Antonio F. F. Teixeira | F.M. Paiva and A.F.F. Teixeira | Tempa voja^go kaj geodezioj en ^generala relativeco / Time travel and
geodesics in general relativity | 16 pages, 6 figures, two columns Esperanto/English | null | null | CBPF-NF-009/11 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the homogeneous metric of Som-Raychaudhuri, in general relativity, we
study the three types of geodesics: timelike, null, and spacelike; in
particular, the little known geodesics of simultaneities. We also study the
non-geodetic circular motion with constant velocity, particularly closed
timelike curves, and time ... | [
{
"created": "Tue, 12 Apr 2011 17:05:15 GMT",
"version": "v1"
}
] | 2011-04-13 | [
[
"Paiva",
"F. M.",
""
],
[
"Teixeira",
"A. F. F.",
""
]
] | In the homogeneous metric of Som-Raychaudhuri, in general relativity, we study the three types of geodesics: timelike, null, and spacelike; in particular, the little known geodesics of simultaneities. We also study the non-geodetic circular motion with constant velocity, particularly closed timelike curves, and time tr... |
2205.05483 | Massimo Giovannini | Massimo Giovannini | Flat spectra of cosmic gravitons in the nHz and audio bands | 33 pages; 5 figures; a paragraph has been added and few typos have
been corrected | JCAP 08 (2022) 08, 012 | 10.1088/1475-7516/2022/08/012 | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | The spectra of the relic gravitons are customarily normalized in the
low-frequency domain where the signal of the concordance paradigm is expected
to peak and this is why their contribution to the temperature and polarization
anisotropies of the microwave background is only described by the tensor to
scalar ratio. If... | [
{
"created": "Wed, 11 May 2022 13:24:43 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Aug 2022 16:57:18 GMT",
"version": "v2"
}
] | 2022-08-17 | [
[
"Giovannini",
"Massimo",
""
]
] | The spectra of the relic gravitons are customarily normalized in the low-frequency domain where the signal of the concordance paradigm is expected to peak and this is why their contribution to the temperature and polarization anisotropies of the microwave background is only described by the tensor to scalar ratio. If t... |
1707.05913 | David Mattingly | Jonathan Cheyne, David Mattingly | Constructing entanglement wedges for Lifshitz spacetimes with Lifshitz
gravity | 7 pages, 2 figures | Phys. Rev. D 97, 066024 (2018) | 10.1103/PhysRevD.97.066024 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Holographic relationships between entanglement entropy on the boundary of a
spacetime and the area of minimal surfaces in the bulk provide an important
entry in the bulk/boundary dictionary. While constructing the necessary causal
and entanglement wedges is well understood in asymptotically AdS spacetimes,
less is kn... | [
{
"created": "Wed, 19 Jul 2017 01:28:16 GMT",
"version": "v1"
}
] | 2018-04-04 | [
[
"Cheyne",
"Jonathan",
""
],
[
"Mattingly",
"David",
""
]
] | Holographic relationships between entanglement entropy on the boundary of a spacetime and the area of minimal surfaces in the bulk provide an important entry in the bulk/boundary dictionary. While constructing the necessary causal and entanglement wedges is well understood in asymptotically AdS spacetimes, less is know... |
1412.7333 | Bernard Raffaelli | Bernard Raffaelli | Strong gravitational lensing and black hole quasinormal modes: Towards a
semiclassical unified description | null | General Relativity and Gravitation, 48(2), 1-15, (2016) | 10.1007/s10714-016-2016-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine in a semiclassical framework the deflection function of strong
gravitational lensing, for static and spherically symmetric black holes,
endowed with a photon sphere. From a first-order WKB analysis near the maximum
of the Regge-Wheeler potential, we extract the real phase shifts from the
S-matrix elements ... | [
{
"created": "Tue, 23 Dec 2014 11:56:35 GMT",
"version": "v1"
}
] | 2016-01-22 | [
[
"Raffaelli",
"Bernard",
""
]
] | We examine in a semiclassical framework the deflection function of strong gravitational lensing, for static and spherically symmetric black holes, endowed with a photon sphere. From a first-order WKB analysis near the maximum of the Regge-Wheeler potential, we extract the real phase shifts from the S-matrix elements an... |
gr-qc/0507025 | Plyatsko Roman | Roman Plyatsko and Oleksa Bilaniuk | Gravitational ultrarelativistic interaction of classical particles in
the context of unification of interactions | 16 pages | Class.Quant.Grav. 18 (2001) 5187-5198 | 10.1088/0264-9381/18/23/312 | null | gr-qc | null | The response of the ultrarelativistic particle with spin in a Schwarzschild
field to the gravitomagnetic components as measured by the comoving observer is
investigated. The dependence of the particle's spin-orbit acceleration on the
Lorentz \gamma - factor and the spin orientation is studied. The concrete
circular u... | [
{
"created": "Thu, 7 Jul 2005 10:02:41 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Plyatsko",
"Roman",
""
],
[
"Bilaniuk",
"Oleksa",
""
]
] | The response of the ultrarelativistic particle with spin in a Schwarzschild field to the gravitomagnetic components as measured by the comoving observer is investigated. The dependence of the particle's spin-orbit acceleration on the Lorentz \gamma - factor and the spin orientation is studied. The concrete circular ult... |
1107.2741 | Zou De Cheng | De-Cheng Zou, Zhan-Ying Yang, Rui-Hong Yue and Tian-Yi Yu | A new metric for rotating charged Gauss-Bonnet black holes in AdS spaces | 11 pages and accepted by Chin. Phys. B | Chin.Phy.B,20,100403,2011 | 10.1088/1674-1056/20/10/100403 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper presents a new metric for slowly rotating charged Gauss-Bonnet
black holes in higher dimensional anti-de Sitter spaces. Taking the angular
momentum parameter $a$ up to second order, the slowly rotating charged black
hole solutions are obtained by working directly in the action.
| [
{
"created": "Thu, 14 Jul 2011 06:48:37 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Zou",
"De-Cheng",
""
],
[
"Yang",
"Zhan-Ying",
""
],
[
"Yue",
"Rui-Hong",
""
],
[
"Yu",
"Tian-Yi",
""
]
] | This paper presents a new metric for slowly rotating charged Gauss-Bonnet black holes in higher dimensional anti-de Sitter spaces. Taking the angular momentum parameter $a$ up to second order, the slowly rotating charged black hole solutions are obtained by working directly in the action. |
1105.4866 | Alexander Stroeer | Alexander Stroeer, Lindy Blackburn, Jordan Camp | Comparison of Signals from Gravitational Wave Detectors with
Instantaneous Time-Frequency Maps | 13 pages, accepted for publication in CQG | null | 10.1088/0264-9381/28/15/155001 | null | gr-qc astro-ph.IM physics.comp-ph physics.data-an | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave astronomy relies on the use of multiple detectors, so that
coincident detections may distinguish real signals from instrumental artifacts,
and also so that relative timing of signals can provide the sky position of
sources. We show that the comparison of instantaneous time-frequency and time-
ampli... | [
{
"created": "Tue, 24 May 2011 19:46:01 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Stroeer",
"Alexander",
""
],
[
"Blackburn",
"Lindy",
""
],
[
"Camp",
"Jordan",
""
]
] | Gravitational wave astronomy relies on the use of multiple detectors, so that coincident detections may distinguish real signals from instrumental artifacts, and also so that relative timing of signals can provide the sky position of sources. We show that the comparison of instantaneous time-frequency and time- amplitu... |
2105.00904 | Diego Rubiera-Garcia | Gonzalo J. Olmo, Diego Rubiera-Garcia, Aneta Wojnar | Parameterized non-relativistic limit of stellar structure equations in
Ricci-based gravity theories | 7 pages | Phys. Rev. D 104, 024045 (2021) | 10.1103/PhysRevD.104.024045 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We present the non-relativistic limit of the stellar structure equations of
Ricci-based gravities, a family of metric-affine theories whose Lagrangian is
built via contractions of the metric with the Ricci tensor of an a priori
independent connection. We find that this limit is characterized by four
parameters that a... | [
{
"created": "Mon, 3 May 2021 14:42:21 GMT",
"version": "v1"
}
] | 2021-07-21 | [
[
"Olmo",
"Gonzalo J.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
],
[
"Wojnar",
"Aneta",
""
]
] | We present the non-relativistic limit of the stellar structure equations of Ricci-based gravities, a family of metric-affine theories whose Lagrangian is built via contractions of the metric with the Ricci tensor of an a priori independent connection. We find that this limit is characterized by four parameters that ari... |
2209.05637 | Gabriel R. Bengochea | Octavio Palermo, Mart\'in M. Ocampo, Gabriel R. Bengochea, Gabriel
Le\'on | Emergent universe: tensor perturbations within the CSL framework | 13 pages, 3 figures, 1 Appendix. Improved version with additional
comments and details. Accepted in EPJC | Eur. Phys. J. C 82, 12 (2022) 1146 | 10.1140/epjc/s10052-022-11127-w | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | We calculate the primordial power spectrum of tensor perturbations, within
the emergent universe scenario, incorporating a version of the Continuous
Spontaneous Localization (CSL) model as a mechanism capable of: breaking the
initial symmetries of the system, generating the perturbations, and also
achieving the quant... | [
{
"created": "Mon, 12 Sep 2022 22:09:34 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Dec 2022 21:56:40 GMT",
"version": "v2"
}
] | 2022-12-21 | [
[
"Palermo",
"Octavio",
""
],
[
"Ocampo",
"Martín M.",
""
],
[
"Bengochea",
"Gabriel R.",
""
],
[
"León",
"Gabriel",
""
]
] | We calculate the primordial power spectrum of tensor perturbations, within the emergent universe scenario, incorporating a version of the Continuous Spontaneous Localization (CSL) model as a mechanism capable of: breaking the initial symmetries of the system, generating the perturbations, and also achieving the quantum... |
1811.06830 | Sunny Vagnozzi | Alessandro Casalino, Massimiliano Rinaldi, Lorenzo Sebastiani, Sunny
Vagnozzi | Alive and well: mimetic gravity and a higher-order extension in light of
GW170817 | 9 pages, 3 figures. Accepted for publication in Class. Quant. Grav | Class. Quant. Grav. 36 (2019) 017001 | 10.1088/1361-6382/aaf1fd | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The near-simultaneous multi-messenger detection of the gravitational wave
(GW) event GW170817 and its optical counterpart, the short $\gamma$-ray burst
GRB170817A, implies that deviations of the GW speed from the speed of light are
restricted to being of ${\cal O}(10^{-15})$. In this note, we study the
implications o... | [
{
"created": "Fri, 16 Nov 2018 14:58:46 GMT",
"version": "v1"
}
] | 2018-12-13 | [
[
"Casalino",
"Alessandro",
""
],
[
"Rinaldi",
"Massimiliano",
""
],
[
"Sebastiani",
"Lorenzo",
""
],
[
"Vagnozzi",
"Sunny",
""
]
] | The near-simultaneous multi-messenger detection of the gravitational wave (GW) event GW170817 and its optical counterpart, the short $\gamma$-ray burst GRB170817A, implies that deviations of the GW speed from the speed of light are restricted to being of ${\cal O}(10^{-15})$. In this note, we study the implications of ... |
0812.5050 | Neven Bilic | Neven Bilic | Thermodynamics of Dark Energy | 12 pages, presented at BW2007 workshop, Djerdap, Serbia, 2-9 Sep
2007, typos corrected | Fortsch.Phys.56:363-372,2008 | 10.1002/prop.200710507 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Thermodynamic properties of dark energy are discussed assuming that dark
energy is described in terms of a selfinteracting complex scalar. We first show
that, under certain assumptions, selfinteracting complex scalar field theories
are equivalent to purely kinetic k-essence models. Then we analyze the themal
properti... | [
{
"created": "Tue, 30 Dec 2008 11:10:58 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Sep 2010 13:12:55 GMT",
"version": "v2"
}
] | 2010-09-28 | [
[
"Bilic",
"Neven",
""
]
] | Thermodynamic properties of dark energy are discussed assuming that dark energy is described in terms of a selfinteracting complex scalar. We first show that, under certain assumptions, selfinteracting complex scalar field theories are equivalent to purely kinetic k-essence models. Then we analyze the themal properties... |
gr-qc/0111031 | Enrique Alvarez | Enrique Alvarez and Jorge Conde | Are the String and Einstein Frames Equivalent | 12 pages, LaTeX | Mod.Phys.Lett. A17 (2002) 413-420 | 10.1142/S0217732302006606 | IFT-UAM/CSIC-01-34 | gr-qc | null | The low energy physics as predicted by strings can be expressed in two
(conformally related) different variables, usually called {\em frames}. The
problem is raised as to whether it is physically possible in some situations to
tell one from the other.
| [
{
"created": "Mon, 12 Nov 2001 13:56:27 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Alvarez",
"Enrique",
""
],
[
"Conde",
"Jorge",
""
]
] | The low energy physics as predicted by strings can be expressed in two (conformally related) different variables, usually called {\em frames}. The problem is raised as to whether it is physically possible in some situations to tell one from the other. |
1810.12134 | Edward Malec | Wojciech Kulczycki, Patryk Mach and Edward Malec | Two mass conjectures on axially symmetric black hole--disk systems | 8 pages, 5 figures | Phys. Rev. D 99, 024004 (2019) | 10.1103/PhysRevD.99.024004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze stationary self-gravitating disks around spinning black holes that
satisfy the recently found general-relativistic Keplerian rotation law. There
is a numerical evidence that the angular velocity, circumferential radius and
angular momenta yield a bound onto the asymptotic mass of the system. This
bound is ... | [
{
"created": "Mon, 29 Oct 2018 14:01:23 GMT",
"version": "v1"
}
] | 2019-01-09 | [
[
"Kulczycki",
"Wojciech",
""
],
[
"Mach",
"Patryk",
""
],
[
"Malec",
"Edward",
""
]
] | We analyze stationary self-gravitating disks around spinning black holes that satisfy the recently found general-relativistic Keplerian rotation law. There is a numerical evidence that the angular velocity, circumferential radius and angular momenta yield a bound onto the asymptotic mass of the system. This bound is pr... |
2204.05404 | Sergi Nadal-Gisbert | Pau Beltr\'an-Palau, Sergi Nadal-Gisbert, Jos\'e Navarro-Salas and
Silvia Pla | Renormalization and a non-adiabatic vacuum choice in a
radiation-dominated universe | 11 pages | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Vacuum and particles can be naturally defined in the adiabatic regime of an
expanding universe. In general, however, there is no preferred choice of a
vacuum state, unless the spacetime background possesses special symmetries. In
the absence of symmetries the standard viewpoint is to construct distinguished
adiabatic... | [
{
"created": "Mon, 11 Apr 2022 20:50:33 GMT",
"version": "v1"
}
] | 2022-04-13 | [
[
"Beltrán-Palau",
"Pau",
""
],
[
"Nadal-Gisbert",
"Sergi",
""
],
[
"Navarro-Salas",
"José",
""
],
[
"Pla",
"Silvia",
""
]
] | Vacuum and particles can be naturally defined in the adiabatic regime of an expanding universe. In general, however, there is no preferred choice of a vacuum state, unless the spacetime background possesses special symmetries. In the absence of symmetries the standard viewpoint is to construct distinguished adiabatic s... |
1601.06132 | M. B. Paranjape | A. Landry and M. B. Paranjape | Gravitationally induced quantum transitions | 8 pages, no figures | Phys. Rev. D 93, 122006 (2016) | 10.1103/PhysRevD.93.122006 | UdeM-GPP-TH-16-248 | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter, we calculate the probability for resonantly induced
transitions in quantum states due to time dependent gravitational
perturbations. Contrary to common wisdom, the probability of inducing
transitions is not infinitesimally small. We consider a system of ultra cold
neutrons (UCN), which are organized a... | [
{
"created": "Fri, 22 Jan 2016 19:57:18 GMT",
"version": "v1"
}
] | 2016-07-13 | [
[
"Landry",
"A.",
""
],
[
"Paranjape",
"M. B.",
""
]
] | In this letter, we calculate the probability for resonantly induced transitions in quantum states due to time dependent gravitational perturbations. Contrary to common wisdom, the probability of inducing transitions is not infinitesimally small. We consider a system of ultra cold neutrons (UCN), which are organized acc... |
gr-qc/0204082 | Daisuke Ida | Daisuke Ida, Ken-ichi Nakao | Isoperimetric inequality for higher-dimensional black holes | 7 pages, 13 figures | Phys.Rev. D66 (2002) 064026 | 10.1103/PhysRevD.66.064026 | OCU-PHYS-188, APGR-4 | gr-qc | null | The initial data sets for the five-dimensional Einstein equation have been
examined. The system is designed such that the black hole ($\simeq S^3$) or the
black ring ($\simeq S^2\times S^1$) can be found. We have found that the
typical length of the horizon can become arbitrarily large but the area of
characteristic ... | [
{
"created": "Fri, 26 Apr 2002 22:32:11 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Ida",
"Daisuke",
""
],
[
"Nakao",
"Ken-ichi",
""
]
] | The initial data sets for the five-dimensional Einstein equation have been examined. The system is designed such that the black hole ($\simeq S^3$) or the black ring ($\simeq S^2\times S^1$) can be found. We have found that the typical length of the horizon can become arbitrarily large but the area of characteristic cl... |
gr-qc/9912095 | Roberto Casadio | G.L. Alberghi, R. Casadio, A. Gruppuso | Non-minimally coupled scalar fields in homogeneous universes | REVTeX, 24 pages, 12 EPS figures included. Accepted for publication
in Phys. Rev. D | Phys.Rev. D61 (2000) 084009 | 10.1103/PhysRevD.61.084009 | null | gr-qc astro-ph hep-th | null | The equations governing the evolution of non-minimally coupled scalar matter
and the scale factor of a Robertson-Walker universe are derived from a
minisuperspace action. As for the minimally coupled case, it is shown that the
entire semiclassical dynamics can be retrieved from the Wheeler-DeWitt equation
via the Bor... | [
{
"created": "Wed, 22 Dec 1999 08:52:52 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Alberghi",
"G. L.",
""
],
[
"Casadio",
"R.",
""
],
[
"Gruppuso",
"A.",
""
]
] | The equations governing the evolution of non-minimally coupled scalar matter and the scale factor of a Robertson-Walker universe are derived from a minisuperspace action. As for the minimally coupled case, it is shown that the entire semiclassical dynamics can be retrieved from the Wheeler-DeWitt equation via the Born-... |
0811.4075 | Michael Bradley | Michael Bradley, S. Brian Edgar, M.P. Machado Ramos | Invariant classification and the generalised invariant formalism:
conformally flat pure radiation metrics, with zero cosmological constant | Extended version of GRG publication, with some typos etc corrected | GRG (2010) 42: 155-182 | 10.1007/s10714-009-0823-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Metrics obtained by integrating within the generalised invariant formalism
are structured around their intrinsic coordinates, and this considerably
simplifies their invariant classification and symmetry analysis. We illustrate
this by presenting a simple and transparent complete invariant classification
of the confor... | [
{
"created": "Tue, 25 Nov 2008 12:54:15 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Jan 2010 17:45:09 GMT",
"version": "v2"
}
] | 2015-05-13 | [
[
"Bradley",
"Michael",
""
],
[
"Edgar",
"S. Brian",
""
],
[
"Ramos",
"M. P. Machado",
""
]
] | Metrics obtained by integrating within the generalised invariant formalism are structured around their intrinsic coordinates, and this considerably simplifies their invariant classification and symmetry analysis. We illustrate this by presenting a simple and transparent complete invariant classification of the conforma... |
0908.2401 | Reinaldo Gleiser | Reinaldo J. Gleiser and Marcos A. Ramirez (Universidad Nacional de
Cordoba) | Static spherically symmetric Einstein-Vlasov shells made up of particles
with a discrete set of values of their angular momentum | Comments: 16 pages, 5 figures. Section on thin shell limit revised.
References added | Class.Quant.Grav.27:065008,2010 | 10.1088/0264-9381/27/6/065008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study static spherically symmetric Einstein-Vlasov shells,
made up of equal mass particles, where the angular momentum L of particles
takes values only on a discrete finite set. We consider first the case where
there is only one value of L, and prove their existence by constructing
explicit examples.... | [
{
"created": "Mon, 17 Aug 2009 17:18:16 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Sep 2009 17:17:48 GMT",
"version": "v2"
}
] | 2010-02-25 | [
[
"Gleiser",
"Reinaldo J.",
"",
"Universidad Nacional de\n Cordoba"
],
[
"Ramirez",
"Marcos A.",
"",
"Universidad Nacional de\n Cordoba"
]
] | In this paper we study static spherically symmetric Einstein-Vlasov shells, made up of equal mass particles, where the angular momentum L of particles takes values only on a discrete finite set. We consider first the case where there is only one value of L, and prove their existence by constructing explicit examples. S... |
2002.02121 | Titus K Mathew | Krishna P B and Titus K Mathew | Emergence of cosmic space and the maximization of horizon entropy | 12 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spatial expansion of the universe can be described as the emergence of
space with the progress of cosmic time, through a simple equation, $\Delta V =
\Delta t\left(N_{surf}- N_{bulk}\right)$. This law of emergence suggested by
Padmanabhan in the context of general relativity for a flat universe has been
generaliz... | [
{
"created": "Thu, 6 Feb 2020 06:45:05 GMT",
"version": "v1"
},
{
"created": "Mon, 3 May 2021 15:38:34 GMT",
"version": "v2"
}
] | 2021-05-04 | [
[
"B",
"Krishna P",
""
],
[
"Mathew",
"Titus K",
""
]
] | The spatial expansion of the universe can be described as the emergence of space with the progress of cosmic time, through a simple equation, $\Delta V = \Delta t\left(N_{surf}- N_{bulk}\right)$. This law of emergence suggested by Padmanabhan in the context of general relativity for a flat universe has been generalized... |
1906.01977 | Theophanes Grammenos | I. Radinschi, Th. Grammenos, F. Rahaman, M. M. Cazacu, A. Spanou and
J. Chakraborty | On the energy of a non-singular black hole solution satisfying the weak
energy condition | 20 pages, 9 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The energy-momentum localization for a new four-dimensional and spherically
symmetric, charged black hole solution that through a coupling of general
relativity with non-linear electrodynamics is everywhere non-singular while it
satisfies the weak energy condition is investigated. The Einstein and M\{o}
ller energy-m... | [
{
"created": "Sat, 1 Jun 2019 17:38:32 GMT",
"version": "v1"
}
] | 2019-06-06 | [
[
"Radinschi",
"I.",
""
],
[
"Grammenos",
"Th.",
""
],
[
"Rahaman",
"F.",
""
],
[
"Cazacu",
"M. M.",
""
],
[
"Spanou",
"A.",
""
],
[
"Chakraborty",
"J.",
""
]
] | The energy-momentum localization for a new four-dimensional and spherically symmetric, charged black hole solution that through a coupling of general relativity with non-linear electrodynamics is everywhere non-singular while it satisfies the weak energy condition is investigated. The Einstein and M\{o} ller energy-mom... |
1806.05840 | Sumanta Chakraborty | Sumanta Chakraborty, Ramit Dey | Noether Current, Black Hole Entropy and Spacetime Torsion | Published Version, References Added | Phys. Lett. B 786, 432 (2018) | 10.1016/j.physletb.2018.10.027 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the presence of spacetime torsion, unlike any other non-trivial
modifications of the Einstein gravity, does \emph{not} affect black hole
entropy. The theory being diffeomorphism invariant leads to a Noether current
and hence to a Noether charge, which can be associated to the heat content of
the spacetim... | [
{
"created": "Fri, 15 Jun 2018 07:39:07 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Nov 2018 03:49:08 GMT",
"version": "v2"
}
] | 2018-11-02 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"Dey",
"Ramit",
""
]
] | We show that the presence of spacetime torsion, unlike any other non-trivial modifications of the Einstein gravity, does \emph{not} affect black hole entropy. The theory being diffeomorphism invariant leads to a Noether current and hence to a Noether charge, which can be associated to the heat content of the spacetime.... |
1605.04648 | Wlodzimierz Piechocki | Ewa Czuchry, David Garfinkle, John R. Klauder, and Wlodzimierz
Piechocki | Do spikes persist in a quantum treatment of spacetime singularities? | 28 pages, 2 figures, matches published version in Phys. Rev. D {\bf
95}, 024014 (2017) | Phys. Rev. D 95, 024014 (2017) | 10.1103/PhysRevD.95.024014 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The classical approach to spacetime singularities leads to a simplified
dynamics in which spatial derivatives become unimportant compared to time
derivatives, and thus each spatial point essentially becomes uncoupled from its
neighbors. This uncoupled dynamics leads to sharp features (called "spikes") as
follows: par... | [
{
"created": "Mon, 16 May 2016 05:17:21 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Jun 2016 05:19:14 GMT",
"version": "v2"
},
{
"created": "Fri, 13 Jan 2017 12:33:28 GMT",
"version": "v3"
}
] | 2017-01-18 | [
[
"Czuchry",
"Ewa",
""
],
[
"Garfinkle",
"David",
""
],
[
"Klauder",
"John R.",
""
],
[
"Piechocki",
"Wlodzimierz",
""
]
] | The classical approach to spacetime singularities leads to a simplified dynamics in which spatial derivatives become unimportant compared to time derivatives, and thus each spatial point essentially becomes uncoupled from its neighbors. This uncoupled dynamics leads to sharp features (called "spikes") as follows: parti... |
1911.05988 | Colin MacLaurin | Colin MacLaurin | Schwarzschild spacetime under generalised Gullstrand-Painlev\'e slicing | 21 pages, 5 figures, to appear as chapter 9 in Cacciatori, G\"uneysu,
and Pigola, eds. (c. 2019), Einstein equations: Physical and mathematical
aspects of general relativity | chapter 9 in Cacciatori, G\"uneysu & Pigola, eds., Einstein
equations: Physical and mathematical aspects of general relativity
(Birkhauser, 2019) | 10.1007/978-3-030-18061-4_9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate a foliation of Schwarzschild spacetime determined by observers
freely falling in the radial direction. This is described using a
generalisation of Gullstrand-Painlev\'e coordinates which allows for any
possible radial velocity. This foliation provides a contrast with the usual
static foliation implied ... | [
{
"created": "Thu, 14 Nov 2019 08:31:04 GMT",
"version": "v1"
}
] | 2022-09-05 | [
[
"MacLaurin",
"Colin",
""
]
] | We investigate a foliation of Schwarzschild spacetime determined by observers freely falling in the radial direction. This is described using a generalisation of Gullstrand-Painlev\'e coordinates which allows for any possible radial velocity. This foliation provides a contrast with the usual static foliation implied by... |
1507.07448 | David W. Tian | David Wenjie Tian | Local energy-momentum conservation in scalar-tensor-like gravity with
generic curvature invariants | References added | Gen. Relativ. Gravit. (2016) 48:110 | 10.1007/s10714-016-2106-6 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For a large class of scalar-tensor-like modified gravity whose action
contains nonminimal couplings between a scalar field $\phi(x^\alpha)$ and
generic curvature invariants $\mathcal{R}$ beyond the Ricci scalar
$R=R^\alpha_{\;\;\alpha}$, we prove the covariant invariance of its field
equation and confirm/prove the lo... | [
{
"created": "Mon, 27 Jul 2015 15:25:46 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Aug 2015 22:51:31 GMT",
"version": "v2"
}
] | 2016-07-20 | [
[
"Tian",
"David Wenjie",
""
]
] | For a large class of scalar-tensor-like modified gravity whose action contains nonminimal couplings between a scalar field $\phi(x^\alpha)$ and generic curvature invariants $\mathcal{R}$ beyond the Ricci scalar $R=R^\alpha_{\;\;\alpha}$, we prove the covariant invariance of its field equation and confirm/prove the loca... |
gr-qc/9403026 | Roh-Suan Tung | James M. Nester, Roh Suan Tung and Vadim V. Zhytnikov | Some Spinor-Curvature Identities | 5 pages Plain TeX, NCU-GR-93-SSCI | Class.Quant.Grav.11:983-988,1994 | 10.1088/0264-9381/11/4/014 | null | gr-qc | null | We describe a class of spinor-curvature identities which exist for Riemannian
or Riemann-Cartan geometries. Each identity relates an expression quadratic in
the covariant derivative of a spinor field with an expression linear in the
curvature plus an exact differential. Certain special cases in 3 and 4
dimensions whi... | [
{
"created": "Sun, 13 Mar 1994 16:25:56 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Nester",
"James M.",
""
],
[
"Tung",
"Roh Suan",
""
],
[
"Zhytnikov",
"Vadim V.",
""
]
] | We describe a class of spinor-curvature identities which exist for Riemannian or Riemann-Cartan geometries. Each identity relates an expression quadratic in the covariant derivative of a spinor field with an expression linear in the curvature plus an exact differential. Certain special cases in 3 and 4 dimensions which... |
2403.11476 | Shu-Min Wu | Shu-Min Wu, Xiao-Wei Teng, Xiao-Li Huang, Jianbo Lu | Genuine N-partite entanglement in Schwarzschild-de Sitter black hole
spacetime | 14 pages, 3 figures | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | Complex quantum information tasks in a gravitational background require
multipartite entanglement for effective processing. Therefore, it is necessary
to investigate the properties of multipartite entanglement in a relativistic
setting. In this paper, we study genuine N-partite entanglement of massless
Dirac fields i... | [
{
"created": "Mon, 18 Mar 2024 04:50:42 GMT",
"version": "v1"
}
] | 2024-03-19 | [
[
"Wu",
"Shu-Min",
""
],
[
"Teng",
"Xiao-Wei",
""
],
[
"Huang",
"Xiao-Li",
""
],
[
"Lu",
"Jianbo",
""
]
] | Complex quantum information tasks in a gravitational background require multipartite entanglement for effective processing. Therefore, it is necessary to investigate the properties of multipartite entanglement in a relativistic setting. In this paper, we study genuine N-partite entanglement of massless Dirac fields in ... |
gr-qc/0309135 | Manasse R. Mbonye | Manasse R. Mbonye | Constraints On Cosmic Dynamics | 11 pages | null | null | null | gr-qc astro-ph hep-th | null | Observationally, the universe appears virtually critical. Yet, there is no
simple explanation for this state. In this article we advance and explore the
premise that the dynamics of the universe always seeks equilibrium conditions.
Vacuum-induced cosmic accelerations lead to creation of matter-energy modes at
the exp... | [
{
"created": "Tue, 30 Sep 2003 12:36:18 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mbonye",
"Manasse R.",
""
]
] | Observationally, the universe appears virtually critical. Yet, there is no simple explanation for this state. In this article we advance and explore the premise that the dynamics of the universe always seeks equilibrium conditions. Vacuum-induced cosmic accelerations lead to creation of matter-energy modes at the expen... |
gr-qc/0404002 | Bozhidar Zakhariev Iliev | Bozhidar Z. Iliev (Institute for Nuclear Research and Nuclear Energy,
Bulgarian Academy of Sciences, Sofia, Bulgaria) | Centre of mass in spaces with torsion free flat linear connection | 15 LaTeX pages. For related papers, visit the "publication" pages at
http://theo.inrne.bas.bg/~bozho/ | Communication JINR, E5-95-159, Dubna, 1995 | null | null | gr-qc math-ph math.MP | null | The concept "centre of mass" is analyzed in spaces with torsion free flat
linear connection. It is shown that under sufficiently general conditions it is
almost uniquely defined, the corresponding arbitrariness in its definition
being explicitly described.
| [
{
"created": "Thu, 1 Apr 2004 05:17:52 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Iliev",
"Bozhidar Z.",
"",
"Institute for Nuclear Research and Nuclear Energy,\n Bulgarian Academy of Sciences, Sofia, Bulgaria"
]
] | The concept "centre of mass" is analyzed in spaces with torsion free flat linear connection. It is shown that under sufficiently general conditions it is almost uniquely defined, the corresponding arbitrariness in its definition being explicitly described. |
2304.08215 | Anna Pachol | Anna Pacho\l, Aneta Wojnar | Fermi equation of state with finite temperature corrections in quantum
space-times approach: Snyder model vs GUP case | 15 pages; version accepted for publication in CQG | 2023 Class. Quantum Grav. 40 195021 | 10.1088/1361-6382/acf435 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the impact of the deformed phase space associated with the
quantum Snyder space on microphysical systems. The general Fermi-Dirac equation
of state and specific corrections to it are derived. We put emphasis on
non-relativistic degenerate Fermi gas as well as on the temperature-finite
corrections to it... | [
{
"created": "Mon, 17 Apr 2023 12:37:54 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Sep 2023 19:01:51 GMT",
"version": "v2"
}
] | 2023-09-15 | [
[
"Pachoł",
"Anna",
""
],
[
"Wojnar",
"Aneta",
""
]
] | We investigate the impact of the deformed phase space associated with the quantum Snyder space on microphysical systems. The general Fermi-Dirac equation of state and specific corrections to it are derived. We put emphasis on non-relativistic degenerate Fermi gas as well as on the temperature-finite corrections to it. ... |
1009.2214 | Leonardo Augusto Pachon Contreras | Leonardo A. Pachon and F. L. Dubeibe | The influence of the Lande $g$-factor in the classical general
relativistic description of atomic and subatomic systems | 11 pages, 2 figures | Class.Quant.Grav.28:055002,2011 | 10.1088/0264-9381/28/5/055002 | null | gr-qc nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the electromagnetic and gravitational fields of the proton and
electron in terms of the Einstenian gravity via the introduction of an
arbitrary Lande $g$-factor in the Kerr-Newman solution. We show that at length
scales of the order of the reduced Compton wavelength, corrections from
different values of the ... | [
{
"created": "Sun, 12 Sep 2010 04:22:59 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Jan 2011 15:00:24 GMT",
"version": "v2"
}
] | 2011-02-18 | [
[
"Pachon",
"Leonardo A.",
""
],
[
"Dubeibe",
"F. L.",
""
]
] | We study the electromagnetic and gravitational fields of the proton and electron in terms of the Einstenian gravity via the introduction of an arbitrary Lande $g$-factor in the Kerr-Newman solution. We show that at length scales of the order of the reduced Compton wavelength, corrections from different values of the $g... |
gr-qc/9804071 | Laurent Freidel | R. De Pietri and L.Freidel | so(4) Plebanski Action and Relativistic Spin Foam Model | 12 pages, REVTeX using AMS fonts. Some minor corrections and
improvements | Class.Quant.Grav.16:2187-2196,1999 | 10.1088/0264-9381/16/7/303 | CGPG-98/05-02 | gr-qc hep-th | null | In this note we study the correspondence between the ``relativistic spin
foam'' model introduced by Barrett, Crane and Baez and the so(4) Plebanski
action. We argue that the $so(4)$ Plebanski model is the continuum analog of
the relativistic spin foam model. We prove that the Plebanski action possess
four phases, one... | [
{
"created": "Sun, 26 Apr 1998 21:29:56 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jun 1998 23:23:12 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"De Pietri",
"R.",
""
],
[
"Freidel",
"L.",
""
]
] | In this note we study the correspondence between the ``relativistic spin foam'' model introduced by Barrett, Crane and Baez and the so(4) Plebanski action. We argue that the $so(4)$ Plebanski model is the continuum analog of the relativistic spin foam model. We prove that the Plebanski action possess four phases, one o... |
2006.01388 | Yang Huang | Yang Huang and Hongsheng Zhang | Scattering of massless scalar field by charged dilatonic black holes | 14 pages, 22 figures, published version | Eur. Phys. J. C 80, 654 (2020) | 10.1140/epjc/s10052-020-8228-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Wave propagations in the presence of black holes is a significant problem
both in theoretical and observational aspects, especially after the discovery
of gravitational wave and confirmation of black holes. We study the scattering
of massless scalar field by a charged dilatonic black hole in frame of full
wave theory... | [
{
"created": "Tue, 2 Jun 2020 04:42:30 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Aug 2020 10:16:46 GMT",
"version": "v2"
}
] | 2021-03-02 | [
[
"Huang",
"Yang",
""
],
[
"Zhang",
"Hongsheng",
""
]
] | Wave propagations in the presence of black holes is a significant problem both in theoretical and observational aspects, especially after the discovery of gravitational wave and confirmation of black holes. We study the scattering of massless scalar field by a charged dilatonic black hole in frame of full wave theory. ... |
2311.18546 | Alexander Ganz | Yi-Fu Cai, Guillem Dom\`enech, Alexander Ganz, Jie Jiang, Chunshan
Lin, Bo Wang | Parametric resonance of gravitational waves in general scalar-tensor
theories | 23 pages, 3 figures | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves offer a potent mean to test the underlying theory of
gravity. In general theories of gravity, such as scalar-tensor theories, one
expects modifications in the friction term and the sound speed in the
gravitational wave equation. In that case, rapid oscillations in such
coefficients, e.g. due to an... | [
{
"created": "Thu, 30 Nov 2023 13:29:27 GMT",
"version": "v1"
}
] | 2023-12-01 | [
[
"Cai",
"Yi-Fu",
""
],
[
"Domènech",
"Guillem",
""
],
[
"Ganz",
"Alexander",
""
],
[
"Jiang",
"Jie",
""
],
[
"Lin",
"Chunshan",
""
],
[
"Wang",
"Bo",
""
]
] | Gravitational waves offer a potent mean to test the underlying theory of gravity. In general theories of gravity, such as scalar-tensor theories, one expects modifications in the friction term and the sound speed in the gravitational wave equation. In that case, rapid oscillations in such coefficients, e.g. due to an o... |
2007.08732 | Ling Sun | Dana Jones and Ling Sun | Search for continuous gravitational waves from Fomalhaut b in the second
Advanced LIGO observing run with a hidden Markov model | null | Phys. Rev. D 103, 023020 (2021) | 10.1103/PhysRevD.103.023020 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Results are presented from a semicoherent search for continuous gravitational
waves from a nearby neutron star candidate, Fomalhaut b, using data collected
in the second observing run of Advanced LIGO. The search is based on a hidden
Markov model scheme, capable of tracking signal frequency evolution from the
star's ... | [
{
"created": "Fri, 17 Jul 2020 03:04:18 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Dec 2020 23:48:55 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Jun 2021 02:08:43 GMT",
"version": "v3"
}
] | 2021-06-18 | [
[
"Jones",
"Dana",
""
],
[
"Sun",
"Ling",
""
]
] | Results are presented from a semicoherent search for continuous gravitational waves from a nearby neutron star candidate, Fomalhaut b, using data collected in the second observing run of Advanced LIGO. The search is based on a hidden Markov model scheme, capable of tracking signal frequency evolution from the star's se... |
gr-qc/9506044 | Rufus Salah Hamade | Rufus S. Hamade and John M. Stewart | The spherically symmetric collapse of a massless scalar field | 23 pages, 16 figures, uuencoded gzipped postscript This version omits
2 pages of figures. This file, the two pages of figures and the complete
paper are available at ftp://ftp.damtp.cam.ac.uk/pub/gr/rsh1000 | Class.Quant.Grav.13:497-512,1996 | 10.1088/0264-9381/13/3/014 | DAMTP R/95/32 | gr-qc | null | We report on a numerical study of the spherically symmetric collapse of a
self-gravitating massless scalar field. Earlier results of Choptuik(1992, 1994)
are confirmed. The field either disperses to infinity or collapses to a black
hole, depending on the strength of the initial data. For evolutions where the
strength... | [
{
"created": "Thu, 22 Jun 1995 08:12:14 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Hamade",
"Rufus S.",
""
],
[
"Stewart",
"John M.",
""
]
] | We report on a numerical study of the spherically symmetric collapse of a self-gravitating massless scalar field. Earlier results of Choptuik(1992, 1994) are confirmed. The field either disperses to infinity or collapses to a black hole, depending on the strength of the initial data. For evolutions where the strength i... |
0808.2069 | Abhay Ashtekar | Abhay Ashtekar and David Sloan | Action and Hamiltonians in higher dimensional general relativity: First
order framework | 12 pages, no figures. Extends the 4 dimensional analysis of
arXiv:0802.2527 to higher dimensions | Class.Quant.Grav.25:225025,2008 | 10.1088/0264-9381/25/22/225025 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider $d>4$-dimensional space-times which are asymptotically flat at
spatial infinity and show that, in the first order framework, the action
principle is well-defined \emph{without the need of infinite counter terms.} It
naturally leads to a covariant phase space in which the Hamiltonians generating
asymptotic... | [
{
"created": "Thu, 14 Aug 2008 22:57:51 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Sloan",
"David",
""
]
] | We consider $d>4$-dimensional space-times which are asymptotically flat at spatial infinity and show that, in the first order framework, the action principle is well-defined \emph{without the need of infinite counter terms.} It naturally leads to a covariant phase space in which the Hamiltonians generating asymptotic s... |
gr-qc/9402020 | Viqar Husain | Viqar Husain | Self-dual gravity and the chiral model | 11 pages (LateX) (to appear in Phys. Rev. Lett.), Alberta-Thy-48-93 | Phys.Rev.Lett. 72 (1994) 800-803 | 10.1103/PhysRevLett.72.800 | null | gr-qc hep-th | null | The self-dual Einstein equation (SDE) is shown to be equivalent to the two
dimensional chiral model, with gauge group chosen as the group of area
preserving diffeomorphisms of a two dimensional surface. The approach given
here leads to an analog of the Plebanski equations for general self-dual
metrics, and to a natur... | [
{
"created": "Wed, 9 Feb 1994 22:05:14 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Husain",
"Viqar",
""
]
] | The self-dual Einstein equation (SDE) is shown to be equivalent to the two dimensional chiral model, with gauge group chosen as the group of area preserving diffeomorphisms of a two dimensional surface. The approach given here leads to an analog of the Plebanski equations for general self-dual metrics, and to a natural... |
2402.19468 | Andrew L. Miller | Andrew L. Miller, Nancy Aggarwal, S\'ebastien Clesse, Federico De
Lillo, Surabhi Sachdev, Pia Astone, Cristiano Palomba, Ornella J. Piccinni,
and Lorenzo Pierini | Gravitational wave constraints on planetary-mass primordial black holes
using LIGO O3a data | 6 pages, accepted in PRL. Comments are welcome! Upper limit data on
Zenodo: https://dx.doi.org/10.5281/zenodo.10724845. Companion paper:
arXiv:2407.17052. The appendix in v1 has been moved to our companion paper,
which contains a lot more details about our method | null | null | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves from sub-solar mass inspiraling compact objects would
provide almost smoking-gun evidence for primordial black holes (PBHs). We
perform the first search for inspiraling planetary-mass compact objects in
equal-mass and highly asymmetric mass-ratio binaries using data from the first
half of the LIGO... | [
{
"created": "Thu, 29 Feb 2024 18:57:33 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jul 2024 16:11:01 GMT",
"version": "v2"
}
] | 2024-07-26 | [
[
"Miller",
"Andrew L.",
""
],
[
"Aggarwal",
"Nancy",
""
],
[
"Clesse",
"Sébastien",
""
],
[
"De Lillo",
"Federico",
""
],
[
"Sachdev",
"Surabhi",
""
],
[
"Astone",
"Pia",
""
],
[
"Palomba",
"Cristiano",
""
... | Gravitational waves from sub-solar mass inspiraling compact objects would provide almost smoking-gun evidence for primordial black holes (PBHs). We perform the first search for inspiraling planetary-mass compact objects in equal-mass and highly asymmetric mass-ratio binaries using data from the first half of the LIGO-V... |
2003.13168 | Milko Estrada | Milko Estrada and Reginaldo Prado | A note of the first law of thermodynamics by gravitational decoupling | null | Eur. Phys. J. C 80, 799 (2020) | 10.1140/epjc/s10052-020-8315-x | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | We provide a way of decoupling the first law of thermodynamics in two sectors
: the standard first law of thermodynamics and the quasi first law of
thermodynamics. It is showed that both sectors share the same thermodynamics
volume and the same entropy. However, the total thermodynamics pressure, the
total temperatur... | [
{
"created": "Mon, 30 Mar 2020 00:28:20 GMT",
"version": "v1"
}
] | 2020-09-01 | [
[
"Estrada",
"Milko",
""
],
[
"Prado",
"Reginaldo",
""
]
] | We provide a way of decoupling the first law of thermodynamics in two sectors : the standard first law of thermodynamics and the quasi first law of thermodynamics. It is showed that both sectors share the same thermodynamics volume and the same entropy. However, the total thermodynamics pressure, the total temperature ... |
1904.00282 | Geanderson Carvalho | G. A. Carvalho, P. H. R. S. Moraes, S. I. dos Santos Jr., B. S.
Gon\c{c}alves, M. Malheiro | Hydrostatic equilibrium configurations of neutron stars in a non-minimal
geometry-matter coupling theory of gravity | EPJC accepted | null | 10.1140/epjc/s10052-020-7958-y | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we analyze hydrostatic equilibrium configurations of neutron
stars in a non-minimal geometry-matter coupling (GMC) theory of gravity. We
begin with the derivation of the hydrostatic equilibrium equations for the
$f(R,L) $ gravity theory, where $R$ and $L$ are the Ricci scalar and Lagrangian
of matter, re... | [
{
"created": "Sat, 30 Mar 2019 20:31:44 GMT",
"version": "v1"
},
{
"created": "Tue, 12 May 2020 22:25:25 GMT",
"version": "v2"
}
] | 2020-05-14 | [
[
"Carvalho",
"G. A.",
""
],
[
"Moraes",
"P. H. R. S.",
""
],
[
"Santos",
"S. I. dos",
"Jr."
],
[
"Gonçalves",
"B. S.",
""
],
[
"Malheiro",
"M.",
""
]
] | In this work we analyze hydrostatic equilibrium configurations of neutron stars in a non-minimal geometry-matter coupling (GMC) theory of gravity. We begin with the derivation of the hydrostatic equilibrium equations for the $f(R,L) $ gravity theory, where $R$ and $L$ are the Ricci scalar and Lagrangian of matter, resp... |
gr-qc/9611030 | Viqar Husain | Glenn Barnich and Viqar Husain | Geometrical representation of Euclidean general relativity in the
canonical formalism | 23 pages (Latex), minor presentational changes, to appear in Class.
Quantum Grav | Class.Quant.Grav. 14 (1997) 1043-1058 | 10.1088/0264-9381/14/5/012 | CGPG-96/11-1 | gr-qc hep-th | null | We give an SU(2) covariant representation of the constraints of Euclidean
general relativity in the Ashtekar variables. The guiding principle is the use
of triads to transform all free spatial indices into SU(2) indices. A central
role is played by a special covariant derivative. The Gauss, diffeomorphism and
Hamilto... | [
{
"created": "Mon, 11 Nov 1996 21:32:31 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Feb 1997 18:45:59 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Barnich",
"Glenn",
""
],
[
"Husain",
"Viqar",
""
]
] | We give an SU(2) covariant representation of the constraints of Euclidean general relativity in the Ashtekar variables. The guiding principle is the use of triads to transform all free spatial indices into SU(2) indices. A central role is played by a special covariant derivative. The Gauss, diffeomorphism and Hamiltoni... |
gr-qc/9712024 | Mikhail Zotov | D. V. Gal'tsov (Moscow State University), E. E. Donets (JINR, Dubna),
M. Yu. Zotov (INP, Moscow State University) | Oscillatory and Power-law Mass Inflation in Non-Abelian Black Holes | LaTeX, 3 pages, 1 eps figure; uses mprocl.sty and epsf.tex. To appear
in the Proceedings of the 8th Marcel Grossmann Meeting on General Relativity | "Jerusalem 1997, Recent developments in theoretical and
experimental general relativity, gravitation, and relativistic field
theories", Pt.A, 679-681. | null | null | gr-qc | null | Interior structure of non-Abelian black holes is shown to exhibit in a
general case either an oscillating mass-inflationary behavior, or power-law
behavior with a divergent mass function. In both cases no Cauchy horizon forms.
| [
{
"created": "Thu, 4 Dec 1997 07:19:10 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gal'tsov",
"D. V.",
"",
"Moscow State University"
],
[
"Donets",
"E. E.",
"",
"JINR, Dubna"
],
[
"Zotov",
"M. Yu.",
"",
"INP, Moscow State University"
]
] | Interior structure of non-Abelian black holes is shown to exhibit in a general case either an oscillating mass-inflationary behavior, or power-law behavior with a divergent mass function. In both cases no Cauchy horizon forms. |
2212.04479 | Maxence Corman | Maxence Corman and William E. East | Starting inflation from inhomogeneous initial conditions with momentum | 28 pages,10 figures,changed to match JCAP version | JCAP10(2023)046 | 10.1088/1475-7516/2023/10/046 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We investigate the circumstances under which cosmic inflation can arise from
very inhomogeneous initial conditions using numerical relativity simulations.
Previous studies have not considered cases with non-zero momentum density due
to technical challenges with solving the coupled Einstein constraint equations.
Here ... | [
{
"created": "Thu, 8 Dec 2022 18:53:15 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Dec 2023 13:31:19 GMT",
"version": "v2"
}
] | 2023-12-15 | [
[
"Corman",
"Maxence",
""
],
[
"East",
"William E.",
""
]
] | We investigate the circumstances under which cosmic inflation can arise from very inhomogeneous initial conditions using numerical relativity simulations. Previous studies have not considered cases with non-zero momentum density due to technical challenges with solving the coupled Einstein constraint equations. Here we... |
2309.13380 | Stephen Adler | Stephen L. Adler and Brent Doherty | Dynamical gravastar simulated horizon from the
Tolman-Oppenheimer-Volkoff equation initial value problem with relativistic
matter | 18 pages, 12 figures, 4 tables; the Mathematica notebook for Fig. 8
and Tables 1-3 is online at:
https://community.wolfram.com/groups/-/m/t/3022687. Improved smoothness
discussion in this version, an additional Table, and some edits | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We continue the study of "dynamical gravastars", constructed by solving the
Tolman-Oppenheimer-Volkoff (TOV) equations with relativistic matter, undergoing
a phase transition at high pressure to a state with negative energy density, as
allowed in quantum theory. Since generation of a horizon-like structure or
"simula... | [
{
"created": "Sat, 23 Sep 2023 14:02:05 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Sep 2023 20:38:55 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Mar 2024 20:53:49 GMT",
"version": "v3"
},
{
"created": "Wed, 13 Mar 2024 22:22:59 GMT",
"version": "v4"
},
{
"c... | 2024-04-30 | [
[
"Adler",
"Stephen L.",
""
],
[
"Doherty",
"Brent",
""
]
] | We continue the study of "dynamical gravastars", constructed by solving the Tolman-Oppenheimer-Volkoff (TOV) equations with relativistic matter, undergoing a phase transition at high pressure to a state with negative energy density, as allowed in quantum theory. Since generation of a horizon-like structure or "simulate... |
2205.05235 | Leonardo Giani | Leonardo Giani, Tamara M. Davis | The Cosmic Web Crystal: Ising model for Large Scale Structures | Essay written for the Gravity Research Foundation 2022 Awards for
Essays on Gravitation, awarded Honorable Mention | null | 10.1142/S0218271822420251 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If Dark Matter halos possess the gravitational equivalent of an intrinsic
magnetic spin, a formal analogy exists between the low redshift behaviour of
the Cosmic Web in a flat FLRW background, and a crystal of spins submerged in a
thermal reservoir with temperature $T \propto H(t)$. We argue that, within the
use of t... | [
{
"created": "Wed, 11 May 2022 02:03:07 GMT",
"version": "v1"
}
] | 2022-11-28 | [
[
"Giani",
"Leonardo",
""
],
[
"Davis",
"Tamara M.",
""
]
] | If Dark Matter halos possess the gravitational equivalent of an intrinsic magnetic spin, a formal analogy exists between the low redshift behaviour of the Cosmic Web in a flat FLRW background, and a crystal of spins submerged in a thermal reservoir with temperature $T \propto H(t)$. We argue that, within the use of the... |
gr-qc/9501025 | P. R. Brady | Patrick R Brady and Chris M Chambers | Non-linear instability of Kerr-type Cauchy horizons | 11 pages RevTeX, two postscript figures included using epsf.sty | Phys.Rev. D51 (1995) 4177-4186 | 10.1103/PhysRevD.51.4177 | NCL94-TP13 | gr-qc | null | Using the general solution to the Einstein equations on intersecting null
surfaces developed by Hayward, we investigate the non-linear instability of the
Cauchy horizon inside a realistic black hole. Making a minimal assumption about
the free gravitational data allows us to solve the field equations along a null
surf... | [
{
"created": "Sat, 21 Jan 1995 13:59:34 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Brady",
"Patrick R",
""
],
[
"Chambers",
"Chris M",
""
]
] | Using the general solution to the Einstein equations on intersecting null surfaces developed by Hayward, we investigate the non-linear instability of the Cauchy horizon inside a realistic black hole. Making a minimal assumption about the free gravitational data allows us to solve the field equations along a null surfac... |
1506.03429 | Orest Hrycyna | Orest Hrycyna, Marek Szydlowski | Cosmological dynamics with non-minimally coupled scalar field and a
constant potential function | 39 pages, 8 multiple figs; v2. 41 pages, 8 multiple figs. published
version | JCAP11(2015)013 | 10.1088/1475-7516/2015/11/013 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamical systems methods are used to investigate global behavior of the
spatially flat Friedmann-Robertson-Walker cosmological model in gravitational
theory with a non-minimally coupled scalar field and a constant potential
function. We show that the system can be reduced to an autonomous
three-dimensional dynamical... | [
{
"created": "Wed, 10 Jun 2015 19:02:21 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Nov 2015 07:13:55 GMT",
"version": "v2"
}
] | 2015-11-11 | [
[
"Hrycyna",
"Orest",
""
],
[
"Szydlowski",
"Marek",
""
]
] | Dynamical systems methods are used to investigate global behavior of the spatially flat Friedmann-Robertson-Walker cosmological model in gravitational theory with a non-minimally coupled scalar field and a constant potential function. We show that the system can be reduced to an autonomous three-dimensional dynamical s... |
1507.01863 | Sajal Mukherjee | Sajal Mukherjee and Rajesh Kumble Nayak | Carter Constant and Angular Momentum | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the carter like constant for a particle in a non relativistic
dipolar field. This special case is a missing link between carter constant in
stationary axially symmetric spacetime such as Kerr solution and its possible
Newtonian counterpart. We use this system to carry over the definition of
angular mom... | [
{
"created": "Sun, 5 Jul 2015 09:11:40 GMT",
"version": "v1"
}
] | 2015-07-08 | [
[
"Mukherjee",
"Sajal",
""
],
[
"Nayak",
"Rajesh Kumble",
""
]
] | We investigate the carter like constant for a particle in a non relativistic dipolar field. This special case is a missing link between carter constant in stationary axially symmetric spacetime such as Kerr solution and its possible Newtonian counterpart. We use this system to carry over the definition of angular momen... |
1409.1708 | Zurab Silagadze | O.I. Chashchina, Z.K. Silagadze | Expanding space, quasars and St. Augustine's fireworks | 36 pages, 4 figures, some text and references added, published
version | Universe 1(N3) (2015), 307-356 | 10.3390/universe1030307 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An attempt is made to explain time non-dilation allegedly observed in quasar
light curves. The explanation is based on the assumption that quasar black
holes are, in some sense, foreign for our Friedmann-Robertson-Walker universe
and do not participate in the Hubble flow. Although at first sight such a weird
explanat... | [
{
"created": "Fri, 5 Sep 2014 09:49:07 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Oct 2015 10:29:08 GMT",
"version": "v2"
}
] | 2015-10-02 | [
[
"Chashchina",
"O. I.",
""
],
[
"Silagadze",
"Z. K.",
""
]
] | An attempt is made to explain time non-dilation allegedly observed in quasar light curves. The explanation is based on the assumption that quasar black holes are, in some sense, foreign for our Friedmann-Robertson-Walker universe and do not participate in the Hubble flow. Although at first sight such a weird explanatio... |
1206.2943 | Bryant Garcia | Bryant Garcia, Geoffrey Lovelace, Lawrence E. Kidder, Michael Boyle,
Saul A. Teukolsky, Mark A. Scheel, Bela Szilagyi | Are different approaches to constructing initial data for binary black
hole simulations of the same astrophysical situation equivalent? | 7 pages, 7 figures | Phys.Rev.D86:084054,2012 | 10.1103/PhysRevD.86.084054 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Initial data for numerical evolutions of binary-black holes have been
dominated by "conformally flat" (CF) data (i.e., initial data where the
conformal background metric is chosen to be flat) because they are easy to
construct. However, CF initial data cannot simulate nearly extremal spins,
while more complicated "co... | [
{
"created": "Wed, 13 Jun 2012 21:23:00 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jun 2012 19:28:19 GMT",
"version": "v2"
},
{
"created": "Wed, 14 Nov 2012 07:47:45 GMT",
"version": "v3"
}
] | 2012-11-15 | [
[
"Garcia",
"Bryant",
""
],
[
"Lovelace",
"Geoffrey",
""
],
[
"Kidder",
"Lawrence E.",
""
],
[
"Boyle",
"Michael",
""
],
[
"Teukolsky",
"Saul A.",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Szilagyi",
"Bela",
""
... | Initial data for numerical evolutions of binary-black holes have been dominated by "conformally flat" (CF) data (i.e., initial data where the conformal background metric is chosen to be flat) because they are easy to construct. However, CF initial data cannot simulate nearly extremal spins, while more complicated "conf... |
2405.01932 | Ranchhaigiri Brahma Mr. | Ranchhaigiri Brahma and A.K. Sen | Gravitational field due a moving Schwarzschild object | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we analyze the spacetime geometry due to a Schwarzschild object
having accelerated motion. In the beginning we investigated the gravitational
field due to a uniformly moving Schwarzschild object and obtained the spacetime
line element for such an object. After analyzing the necessary boundary
conditions... | [
{
"created": "Fri, 3 May 2024 08:50:27 GMT",
"version": "v1"
}
] | 2024-05-06 | [
[
"Brahma",
"Ranchhaigiri",
""
],
[
"Sen",
"A. K.",
""
]
] | In this paper we analyze the spacetime geometry due to a Schwarzschild object having accelerated motion. In the beginning we investigated the gravitational field due to a uniformly moving Schwarzschild object and obtained the spacetime line element for such an object. After analyzing the necessary boundary conditions t... |
1808.00903 | Muhammad Sharif | M. Sharif and Iqra Ijaz Butt | Complexity Factor for Charged Spherical System | 16 pages, no figure, to appear in EPJC | Eur. Phys. J. C 78(2018)688 | 10.1140/epjc/s10052-018-6121-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the complexity factor for a charged anisotropic
self-gravitating object. We formulate the Einstein-Maxwell field equations,
Tolman-Opphenheimer-Volkoff equation, and the mass function. We form the
structure scalars by the orthogonal splitting of the Riemann tensor and then
find the complexity ... | [
{
"created": "Wed, 1 Aug 2018 02:42:23 GMT",
"version": "v1"
}
] | 2018-09-26 | [
[
"Sharif",
"M.",
""
],
[
"Butt",
"Iqra Ijaz",
""
]
] | In this paper, we study the complexity factor for a charged anisotropic self-gravitating object. We formulate the Einstein-Maxwell field equations, Tolman-Opphenheimer-Volkoff equation, and the mass function. We form the structure scalars by the orthogonal splitting of the Riemann tensor and then find the complexity fa... |
2101.07268 | William C. C. Lima | Jos Gibbons, Atsushi Higuchi and William C. C. Lima | Infrared problem in the Faddeev-Popov-ghost propagator in perturbative
quantum gravity in de Sitter spacetime | 21 pages. Discussion improved and references added; matches published
version | Phys. Rev. D 103, 065016 (2021) | 10.1103/PhysRevD.103.065016 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The propagators for the Faddeev-Popov (FP) ghosts in Yang-Mills theory and
perturbative gravity in the covariant gauge are infrared (IR) divergent in de
Sitter spacetime. An IR cutoff in the momentum space to regularize these
divergences breaks the de Sitter invariance. These IR divergences are due to
the spatially c... | [
{
"created": "Mon, 18 Jan 2021 19:00:01 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Mar 2021 16:04:39 GMT",
"version": "v2"
}
] | 2021-03-30 | [
[
"Gibbons",
"Jos",
""
],
[
"Higuchi",
"Atsushi",
""
],
[
"Lima",
"William C. C.",
""
]
] | The propagators for the Faddeev-Popov (FP) ghosts in Yang-Mills theory and perturbative gravity in the covariant gauge are infrared (IR) divergent in de Sitter spacetime. An IR cutoff in the momentum space to regularize these divergences breaks the de Sitter invariance. These IR divergences are due to the spatially con... |
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