id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1711.06870 | Igor Fomin | Igor V. Fomin and Sergey V. Chervon | Non-minimal coupling influence on the deviation from de Sitter
cosmological expansion | 14 pages | null | 10.1140/epjc/s10052-018-6409-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the models of cosmological inflation in generalized
scalar-tensor gravity, which we consider as a source of deviation from de
Sitter dynamics in the case of GR. Within the framework of the proposed
approach, the exact equations of cosmological dynamics and parameters of
cosmological perturbations are o... | [
{
"created": "Sat, 18 Nov 2017 14:51:43 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Apr 2018 09:24:18 GMT",
"version": "v2"
},
{
"created": "Tue, 9 Oct 2018 08:04:12 GMT",
"version": "v3"
}
] | 2018-12-05 | [
[
"Fomin",
"Igor V.",
""
],
[
"Chervon",
"Sergey V.",
""
]
] | We investigate the models of cosmological inflation in generalized scalar-tensor gravity, which we consider as a source of deviation from de Sitter dynamics in the case of GR. Within the framework of the proposed approach, the exact equations of cosmological dynamics and parameters of cosmological perturbations are obt... |
2110.13519 | Kouji Nakamura | Kouji Nakamura | Gauge-invariant perturbation theory on the Schwarzschild background
spacetime Part III: -- Realization of exact solutions | 42 pages, no figure, The Part III paper of the full paper version of
the previous short papers arXiv:2102.00830v3 [gr-qc] (v1); references are
corrected (v2); 40 pages, no figure, some explanations are added (v3); minor
revision in explanations (v4); minor revision (v5) | null | null | null | gr-qc astro-ph.HE hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is the Part III paper of our series of papers on a gauge-invariant
perturbation theory on the Schwarzschild background spacetime. After reviewing
our general framework of the gauge-invariant perturbation theory and the
proposal on the gauge-invariant treatments for $l=0,1$ mode perturbations on
the Schwarzschild... | [
{
"created": "Tue, 26 Oct 2021 09:20:35 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Oct 2021 07:23:49 GMT",
"version": "v2"
},
{
"created": "Sun, 27 Mar 2022 17:28:17 GMT",
"version": "v3"
},
{
"created": "Fri, 27 May 2022 13:27:52 GMT",
"version": "v4"
},
{
"c... | 2023-09-25 | [
[
"Nakamura",
"Kouji",
""
]
] | This is the Part III paper of our series of papers on a gauge-invariant perturbation theory on the Schwarzschild background spacetime. After reviewing our general framework of the gauge-invariant perturbation theory and the proposal on the gauge-invariant treatments for $l=0,1$ mode perturbations on the Schwarzschild b... |
2006.00594 | Rahul Kumar | Sushant G. Ghosh, Dharm Veer Singh, Rahul Kumar, and Sunil D. Maharaj | Phase transition of AdS black holes in 4D EGB gravity coupled to
nonlinear electrodynamics | 16 pages, 9 figures and 1 table. Accepted in the Annals of Physics | null | 10.1016/j.aop.2020.168347 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein-Gauss-Bonnet (EGB) gravity is an outcome of quadratic curvature
corrections to the Einstein-Hilbert gravity action in the form of a
Gauss-Bonnet (GB) term in $ D > 4$ dimensions and EGB gravity is topologically
invariant in $4D$. Recently several ways have been proposed for regularizing, a
$ D \to 4 $ limit ... | [
{
"created": "Sun, 31 May 2020 19:42:23 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Nov 2020 10:16:32 GMT",
"version": "v2"
}
] | 2021-02-03 | [
[
"Ghosh",
"Sushant G.",
""
],
[
"Singh",
"Dharm Veer",
""
],
[
"Kumar",
"Rahul",
""
],
[
"Maharaj",
"Sunil D.",
""
]
] | Einstein-Gauss-Bonnet (EGB) gravity is an outcome of quadratic curvature corrections to the Einstein-Hilbert gravity action in the form of a Gauss-Bonnet (GB) term in $ D > 4$ dimensions and EGB gravity is topologically invariant in $4D$. Recently several ways have been proposed for regularizing, a $ D \to 4 $ limit of... |
2202.02695 | Tanmoy Paul | Shin'ichi Nojiri, Sergei D. Odintsov, Tanmoy Paul | Towards a smooth unification from an ekpyrotic bounce to the dark energy
era | "Physics of the Dark Universe" accepted | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of a ghost free $f(R,\mathcal{G})$ model, we present a
non-singular cosmological scenario in which the universe initially contracts
through an ekpyrotic phase having a bouncing like behaviour, and following the
bounce, it smoothly transits to a matter or radiation like deceleration era
which is further... | [
{
"created": "Sun, 6 Feb 2022 03:35:06 GMT",
"version": "v1"
}
] | 2022-02-08 | [
[
"Nojiri",
"Shin'ichi",
""
],
[
"Odintsov",
"Sergei D.",
""
],
[
"Paul",
"Tanmoy",
""
]
] | In the context of a ghost free $f(R,\mathcal{G})$ model, we present a non-singular cosmological scenario in which the universe initially contracts through an ekpyrotic phase having a bouncing like behaviour, and following the bounce, it smoothly transits to a matter or radiation like deceleration era which is further s... |
1203.2891 | Martin Feix | Martin Feix | Revisiting metric perturbations in tensor-vector-scalar theory | 12 pages, 6 figures; updated Figs. 3, 5, and 6, improved discussion
of potential and density growth, accepted version | Phys. Rev. D 93, 104039 (2016) | 10.1103/PhysRevD.93.104039 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I revisit cosmological perturbations in Bekenstein's tensor-vector-scalar
theory (TeVeS). Considering only scalar modes in the conformal Newtonian gauge,
the extra degrees of freedom are expressed in a way suitable for studying
modifications at the level of the metric potentials. Assuming a universe in the
matter-dom... | [
{
"created": "Tue, 13 Mar 2012 19:07:51 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Dec 2015 18:00:13 GMT",
"version": "v2"
},
{
"created": "Mon, 9 May 2016 12:45:22 GMT",
"version": "v3"
}
] | 2016-05-24 | [
[
"Feix",
"Martin",
""
]
] | I revisit cosmological perturbations in Bekenstein's tensor-vector-scalar theory (TeVeS). Considering only scalar modes in the conformal Newtonian gauge, the extra degrees of freedom are expressed in a way suitable for studying modifications at the level of the metric potentials. Assuming a universe in the matter-domin... |
2003.06403 | Mihai Marciu C | Mihai Marciu | A note on the dynamical features for the extended $f(P)$ cubic gravity | null | null | 10.1103/PhysRevD.101.103534 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper studies the physical characteristics for the extended $f(P)$ cubic
gravity from a transitive perspective based on dynamical system analysis, by
considering the linear stability theory in two specific cases, corresponding to
power-law $f(P)=f_0 P^{\alpha}$ and exponential $f(P)=f_0 e^{\alpha P}$ gravity
type... | [
{
"created": "Fri, 13 Mar 2020 17:42:47 GMT",
"version": "v1"
}
] | 2020-06-10 | [
[
"Marciu",
"Mihai",
""
]
] | The paper studies the physical characteristics for the extended $f(P)$ cubic gravity from a transitive perspective based on dynamical system analysis, by considering the linear stability theory in two specific cases, corresponding to power-law $f(P)=f_0 P^{\alpha}$ and exponential $f(P)=f_0 e^{\alpha P}$ gravity types,... |
1910.01346 | Beatriz Elizaga Navascu\'es | Beatriz Elizaga Navascu\'es, Guillermo A. Mena Marug\'an, and Santiago
Prado | Fock quantization of the Dirac field in hybrid quantum cosmology:
Relation with adiabatic states | 11 pages | Phys. Rev. D 100, 125003 (2019) | 10.1103/PhysRevD.100.125003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the relation between the Fock representations for a Dirac field
given by the adiabatic scheme and the unique family of vacua with a unitarily
implementable quantum evolution that is employed in hybrid quantum cosmology.
This is done in the context of a perturbed flat cosmology that, in addition, is
minimally... | [
{
"created": "Thu, 3 Oct 2019 08:13:26 GMT",
"version": "v1"
}
] | 2019-12-11 | [
[
"Navascués",
"Beatriz Elizaga",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
],
[
"Prado",
"Santiago",
""
]
] | We study the relation between the Fock representations for a Dirac field given by the adiabatic scheme and the unique family of vacua with a unitarily implementable quantum evolution that is employed in hybrid quantum cosmology. This is done in the context of a perturbed flat cosmology that, in addition, is minimally c... |
2406.15711 | Yu-Xiao Liu | Sen Yang, Wen-Di Guo, Qin Tan, Li Zhao, and Yu-Xiao Liu | Parameterized quasinormal frequencies and Hawking radiation for axial
gravitational perturbations of a holonomy-corrected black hole | 13 pages,6 figures,and 6 tables | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As the fingerprints of black holes, quasinormal modes are closely associated
with many properties of black holes. Especially, the ringdown phase of
gravitational waveforms from the merger of compact binary components can be
described by quasinormal modes. Serving as a model-independent approach, the
framework of para... | [
{
"created": "Sat, 22 Jun 2024 02:27:42 GMT",
"version": "v1"
}
] | 2024-06-25 | [
[
"Yang",
"Sen",
""
],
[
"Guo",
"Wen-Di",
""
],
[
"Tan",
"Qin",
""
],
[
"Zhao",
"Li",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | As the fingerprints of black holes, quasinormal modes are closely associated with many properties of black holes. Especially, the ringdown phase of gravitational waveforms from the merger of compact binary components can be described by quasinormal modes. Serving as a model-independent approach, the framework of parame... |
gr-qc/9711017 | Steve Brandt | S. R. Brandt, J. A. Font | The Matter Plus Black Hole Problem in Axisymmetry | 3 pages, 3 postscript figures, LaTeX, uses mprocl.sty (available at
http://shemesh.fiz.huji.ac.il/MG8/submission.html) To appear in the
proceedings of the Marcel Grossmann 8 (Jerusalem, 1997) | null | null | null | gr-qc | null | We present preliminary results in our long-term project of studying the
evolution of matter in a dynamical spacetime. To achieve this, we have
developed a new code to evolve axisymmetric initial data sets corresponding to
a black hole surrounded by matter fields. The code is based on the coupling of
two previously ex... | [
{
"created": "Thu, 6 Nov 1997 07:49:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Brandt",
"S. R.",
""
],
[
"Font",
"J. A.",
""
]
] | We present preliminary results in our long-term project of studying the evolution of matter in a dynamical spacetime. To achieve this, we have developed a new code to evolve axisymmetric initial data sets corresponding to a black hole surrounded by matter fields. The code is based on the coupling of two previously exis... |
2108.05119 | Bayram Tekin | Emel Altas, Bayram Tekin | Basics of Apparent Horizons in Black Hole Physics | This paper is written for Prof. Tekin Dereli's 70th Birthday
Festschrift, 19 pages, 3 figures | null | 10.1088/1742-6596/2191/1/012002 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Event Horizon, a null hypersurface defining the boundary of the black hole
region of a spacetime, is not particularly useful for evolving black holes
since it is non-local in time. Instead, one uses the more tangible concept of
Apparent Horizon for dynamical black holes out there in the sky that do all
sorts of thing... | [
{
"created": "Wed, 11 Aug 2021 09:42:42 GMT",
"version": "v1"
}
] | 2022-02-23 | [
[
"Altas",
"Emel",
""
],
[
"Tekin",
"Bayram",
""
]
] | Event Horizon, a null hypersurface defining the boundary of the black hole region of a spacetime, is not particularly useful for evolving black holes since it is non-local in time. Instead, one uses the more tangible concept of Apparent Horizon for dynamical black holes out there in the sky that do all sorts of things:... |
1608.07772 | Parampreet Singh | John L. Dupuy, Parampreet Singh | Implications of quantum ambiguities in k=1 loop quantum cosmology:
distinct quantum turnarounds and the super-Planckian regime | Revised version with expanded results and discussion on the role of
inverse volume effects. Four figures added. To appear in Phys. Rev. D | Phys. Rev. D 95, 023510 (2017) | 10.1103/PhysRevD.95.023510 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spatially closed Friedmann-Lema\^{i}tre-Robertson-Walker model in loop
quantum cosmology admits two inequivalent consistent quantizations: one based
on expressing the field strength in terms of the holonomies over closed loops,
and, another using a connection operator and open holonomies. Using the
effective dyna... | [
{
"created": "Sun, 28 Aug 2016 05:55:01 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Dec 2016 22:10:08 GMT",
"version": "v2"
}
] | 2017-04-14 | [
[
"Dupuy",
"John L.",
""
],
[
"Singh",
"Parampreet",
""
]
] | The spatially closed Friedmann-Lema\^{i}tre-Robertson-Walker model in loop quantum cosmology admits two inequivalent consistent quantizations: one based on expressing the field strength in terms of the holonomies over closed loops, and, another using a connection operator and open holonomies. Using the effective dynami... |
gr-qc/0509086 | Ezra Newman | Ezra T. Newman and Gilberto Silva-Ortigoza | Twisting Null Geodesic Congruences and the Einstein-Maxwell Equations | null | Class.Quant.Grav.23:91-114,2006 | 10.1088/0264-9381/23/1/005 | null | gr-qc | null | The purpose of the present work is to extend the earlier results for
asymptotically flat vacuum space-times to asymptotically flat solutions of the
Einstein-Maxwell equations. Once again, in this case, we get a class of
asymptotically shear-free null geodesic congruences depending on a complex
world-line in the same ... | [
{
"created": "Wed, 21 Sep 2005 20:49:45 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Newman",
"Ezra T.",
""
],
[
"Silva-Ortigoza",
"Gilberto",
""
]
] | The purpose of the present work is to extend the earlier results for asymptotically flat vacuum space-times to asymptotically flat solutions of the Einstein-Maxwell equations. Once again, in this case, we get a class of asymptotically shear-free null geodesic congruences depending on a complex world-line in the same fo... |
gr-qc/9706046 | R. Beig, Univ. Wien. | R. Beig and N.\'O Murchadha | Late time behaviour of the maximal slicing of the Schwarzschild black
hole | 18 pages, Latex, no figures | Phys.Rev. D57 (1998) 4728-4737 | 10.1103/PhysRevD.57.4728 | UWThPh-1997-16 | gr-qc | null | A time-symmetric Cauchy slice of the extended Schwarzschild spacetime can be
evolved into a foliation of the $r>3m/2$-region of the spacetime by maximal
surfaces with the requirement that time runs equally fast at both spatial ends
of the manifold. This paper studies the behaviour of these slices in the limit
as prop... | [
{
"created": "Mon, 16 Jun 1997 16:58:02 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Beig",
"R.",
""
],
[
"Murchadha",
"N. Ó",
""
]
] | A time-symmetric Cauchy slice of the extended Schwarzschild spacetime can be evolved into a foliation of the $r>3m/2$-region of the spacetime by maximal surfaces with the requirement that time runs equally fast at both spatial ends of the manifold. This paper studies the behaviour of these slices in the limit as proper... |
gr-qc/0304058 | Michael A. Clayton | M.A. Clayton and J.W. Moffat | Scale Invariant Spectrum from Variable Speed of Light Metric in a
Bimetric Gravity Theory | 13 pages; requires amslatex style files; minor clarifications
throughout | JCAP 0307:004,2003 | 10.1088/1475-7516/2003/07/004 | null | gr-qc astro-ph hep-th | null | An approximately scale invariant spectrum generating the seeds of structure
formation is derived from a bimetric gravity theory. By requiring that the
amplitude of the CMB fluctuations from the model matches the observed value, we
determine the fundamental length scale in the model to be a factor of 10^5
times larger... | [
{
"created": "Tue, 15 Apr 2003 17:01:44 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jun 2003 13:04:16 GMT",
"version": "v2"
}
] | 2010-12-09 | [
[
"Clayton",
"M. A.",
""
],
[
"Moffat",
"J. W.",
""
]
] | An approximately scale invariant spectrum generating the seeds of structure formation is derived from a bimetric gravity theory. By requiring that the amplitude of the CMB fluctuations from the model matches the observed value, we determine the fundamental length scale in the model to be a factor of 10^5 times larger t... |
2206.03982 | Romain Gervalle | Romain Gervalle | Chains of rotating boson stars | 17 pages, 12 figures, published in Physical Review D | Phys. Rev. D 105, 124052 (2022) | 10.1103/PhysRevD.105.124052 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Boson Stars are stationary, axially symmetric solutions of a complex scalar
field theory coupled to gravity. Recently, multi-solitonic configurations
interpreted as static chains of multiple Boson Stars bound by gravity and
carrying no angular momentum were reported. We propose to generalize those
solutions to the st... | [
{
"created": "Wed, 8 Jun 2022 16:00:22 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Jun 2022 16:47:35 GMT",
"version": "v2"
}
] | 2022-06-24 | [
[
"Gervalle",
"Romain",
""
]
] | Boson Stars are stationary, axially symmetric solutions of a complex scalar field theory coupled to gravity. Recently, multi-solitonic configurations interpreted as static chains of multiple Boson Stars bound by gravity and carrying no angular momentum were reported. We propose to generalize those solutions to the stat... |
1312.0205 | Shinji Yamashita | Shinji Yamashita, Satoshi Yajima and Makoto Fukuda | Generalized BF state in quantum gravity | 8 pages; v2 minor corrections | Prog. Theor. Exp. Phys. (2014) 013E02 | 10.1093/ptep/ptt113 | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | The BF state is known as a simple wave function that satisfies three
constraints in canonical quantum gravity without a cosmological constant. It is
constructed from a product of the group delta functions. Applying the chiral
asymmetric extension, the BF state is generalized to the state for real values
of the Barber... | [
{
"created": "Sun, 1 Dec 2013 12:15:06 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jan 2014 18:19:40 GMT",
"version": "v2"
}
] | 2014-01-27 | [
[
"Yamashita",
"Shinji",
""
],
[
"Yajima",
"Satoshi",
""
],
[
"Fukuda",
"Makoto",
""
]
] | The BF state is known as a simple wave function that satisfies three constraints in canonical quantum gravity without a cosmological constant. It is constructed from a product of the group delta functions. Applying the chiral asymmetric extension, the BF state is generalized to the state for real values of the Barbero-... |
gr-qc/0605049 | George F. R. Ellis | George F. R. Ellis | Physics in the Real Universe: Time and Spacetime | 28 pages, including 9 Figures. Major revision in response to referee
comments | Gen.Rel.Grav. 38 (2006) 1797-1824 | 10.1007/s10714-006-0332-z | null | gr-qc | null | The Block Universe idea, representing spacetime as a fixed whole, suggests
the flow of time is an illusion: the entire universe just is, with no special
meaning attached to the present time. This view is however based on
time-reversible microphysical laws and does not represent macro-physical
behaviour and the develo... | [
{
"created": "Tue, 9 May 2006 12:46:25 GMT",
"version": "v1"
},
{
"created": "Thu, 11 May 2006 07:20:37 GMT",
"version": "v2"
},
{
"created": "Thu, 18 May 2006 09:10:34 GMT",
"version": "v3"
},
{
"created": "Fri, 26 May 2006 12:41:21 GMT",
"version": "v4"
},
{
"cr... | 2009-11-11 | [
[
"Ellis",
"George F. R.",
""
]
] | The Block Universe idea, representing spacetime as a fixed whole, suggests the flow of time is an illusion: the entire universe just is, with no special meaning attached to the present time. This view is however based on time-reversible microphysical laws and does not represent macro-physical behaviour and the developm... |
1411.7788 | Gaetano Lambiase | A. Iorio and G. Lambiase | Thermal relics in cosmology with bulk viscosity | 10 pages | null | 10.1140/epjc/s10052-015-3337-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we discuss some consequences of cosmological models in which
the primordial cosmic matter is described by a relativistic imperfect fluid.
The latter takes into account the dissipative effects (bulk viscosity) arising
from different cooling rates of the fluid components in the expanding Universe.
We disc... | [
{
"created": "Fri, 28 Nov 2014 09:13:37 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Iorio",
"A.",
""
],
[
"Lambiase",
"G.",
""
]
] | In this paper we discuss some consequences of cosmological models in which the primordial cosmic matter is described by a relativistic imperfect fluid. The latter takes into account the dissipative effects (bulk viscosity) arising from different cooling rates of the fluid components in the expanding Universe. We discus... |
2407.18319 | Katherine Rink | Katie Rink, Ritesh Bachhar, Tousif Islam, Nur E. M. Rifat, Kevin
Gonzalez-Quesada, Scott E. Field, Gaurav Khanna, Scott A. Hughes, and Vijay
Varma | Gravitational wave surrogate model for spinning, intermediate mass ratio
binaries based on perturbation theory and numerical relativity | 20 pages, 17 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We present BHPTNRSur2dq1e3, a reduced order surrogate model of gravitational
waves emitted from binary black hole (BBH) systems in the comparable to large
mass ratio regime with aligned spin ($\chi_1$) on the heavier mass ($m_1$). We
trained this model on waveform data generated from point particle black hole
perturb... | [
{
"created": "Thu, 25 Jul 2024 18:19:06 GMT",
"version": "v1"
}
] | 2024-07-29 | [
[
"Rink",
"Katie",
""
],
[
"Bachhar",
"Ritesh",
""
],
[
"Islam",
"Tousif",
""
],
[
"Rifat",
"Nur E. M.",
""
],
[
"Gonzalez-Quesada",
"Kevin",
""
],
[
"Field",
"Scott E.",
""
],
[
"Khanna",
"Gaurav",
""
],
... | We present BHPTNRSur2dq1e3, a reduced order surrogate model of gravitational waves emitted from binary black hole (BBH) systems in the comparable to large mass ratio regime with aligned spin ($\chi_1$) on the heavier mass ($m_1$). We trained this model on waveform data generated from point particle black hole perturbat... |
gr-qc/9601048 | Lee Samuel Finn | Lee Samuel Finn (Northwestern University) | Binary inspiral, gravitational radiation, and cosmology | REVTeX, 38 pages, 9 (encapsulated) postscript figures, uses epsf.sty | Phys.Rev.D53:2878-2894,1996 | 10.1103/PhysRevD.53.2878 | null | gr-qc astro-ph | null | Observations of binary inspiral in a single interferometric gravitational
wave detector can be cataloged according to signal-to-noise ratio $\rho$ and
chirp mass $\cal M$. The distribution of events in a catalog composed of
observations with $\rho$ greater than a threshold $\rho_0$ depends on the
Hubble expansion, de... | [
{
"created": "Wed, 31 Jan 1996 00:38:42 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Finn",
"Lee Samuel",
"",
"Northwestern University"
]
] | Observations of binary inspiral in a single interferometric gravitational wave detector can be cataloged according to signal-to-noise ratio $\rho$ and chirp mass $\cal M$. The distribution of events in a catalog composed of observations with $\rho$ greater than a threshold $\rho_0$ depends on the Hubble expansion, dece... |
1502.03809 | Kip S. Thorne | Oliver James (1), Eugenie von Tunzelmann (1), Paul Franklin (1), and
Kip S. Thorne (2) ((1) Double Negative Ltd (2) California Institute of
Technology) | Visualizing Interstellar's Wormhole | 14 pages and 13 figures. In press at American Journal of Physics.
Minor revisions; primarily insertion of a new, long reference 15 at the end
of Section II.A | null | 10.1119/1.4916949 | null | gr-qc physics.pop-ph | http://creativecommons.org/licenses/by-nc-sa/3.0/ | Christopher Nolan's science fiction movie Interstellar offers a variety of
opportunities for students in elementary courses on general relativity theory.
This paper describes such opportunities, including: (i) At the motivational
level, the manner in which elementary relativity concepts underlie the wormhole
visualiz... | [
{
"created": "Thu, 12 Feb 2015 20:57:01 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Feb 2015 04:46:18 GMT",
"version": "v2"
},
{
"created": "Wed, 22 Apr 2015 00:27:36 GMT",
"version": "v3"
}
] | 2015-06-11 | [
[
"James",
"Oliver",
""
],
[
"von Tunzelmann",
"Eugenie",
""
],
[
"Franklin",
"Paul",
""
],
[
"Thorne",
"Kip S.",
""
]
] | Christopher Nolan's science fiction movie Interstellar offers a variety of opportunities for students in elementary courses on general relativity theory. This paper describes such opportunities, including: (i) At the motivational level, the manner in which elementary relativity concepts underlie the wormhole visualizat... |
1401.8002 | H. B. Benaoum | H. B. Benaoum | Modified Chaplygin Gas Cosmology with Bulk Viscosity | 11 pages, 4 figures | International Journal of Modern Physics D, Vol. 23, No. 10 (2014)
1450082 | 10.1142/S0218271814500825 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the viscous modified Chaplygin gas cosmological
model. Solutions for different values of the viscosity parameter are obtained
using both analytical and numerical methods. We have calculated the
deceleration and defined {\em newly} statefinder $\{r, s \}$ pair in D
dimensions. It is shown... | [
{
"created": "Thu, 30 Jan 2014 21:10:58 GMT",
"version": "v1"
},
{
"created": "Sun, 14 Sep 2014 17:47:49 GMT",
"version": "v2"
}
] | 2014-09-16 | [
[
"Benaoum",
"H. B.",
""
]
] | In this paper, we investigate the viscous modified Chaplygin gas cosmological model. Solutions for different values of the viscosity parameter are obtained using both analytical and numerical methods. We have calculated the deceleration and defined {\em newly} statefinder $\{r, s \}$ pair in D dimensions. It is shown t... |
1812.08771 | Edward Anderson | Edward Anderson | Shape Theory. III. Comparative Theory of Backgound Independence | 34 pages, including 6 figures. Minor adjustments | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Background Independence is the modern form of the relational side of the
Absolute versus Relational Debate. Difficulties with its implementation form
the Problem of Time. Its 9 facets - Isham and Kucha\v{r}'s conceptual
classification - correspond to 9 aspects of Background Independence as per the
Author's classical-... | [
{
"created": "Thu, 20 Dec 2018 18:53:30 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jan 2019 16:00:13 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Mar 2019 00:57:09 GMT",
"version": "v3"
}
] | 2019-03-13 | [
[
"Anderson",
"Edward",
""
]
] | Background Independence is the modern form of the relational side of the Absolute versus Relational Debate. Difficulties with its implementation form the Problem of Time. Its 9 facets - Isham and Kucha\v{r}'s conceptual classification - correspond to 9 aspects of Background Independence as per the Author's classical-or... |
1412.3496 | Miguel Angel Garcia Aspeitia | Miguel A. Garcia-Aspeitia, C. Ortiz, J. C. Lopez-Dominguez, Sinhue
Hinojosa-Ruiz and Mayra J. Reyes-Ibarra | Gravitational collapse in brane-worlds revisited | 7 pages, 5 figures | Rev. Mex. Fis. 62 (2016) 199-205 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is dedicated to revisit the modifications caused by branes in the
collapse of a stellar structure under the Snyder-Oppenheimer scheme. Due to the
homogeneity and isotropy of the model, we choose study the case of a closed
geometry described by $k=1$, through the tool of dynamical systems. We revisit
the di... | [
{
"created": "Wed, 10 Dec 2014 23:34:42 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Mar 2016 18:24:03 GMT",
"version": "v2"
}
] | 2016-03-24 | [
[
"Garcia-Aspeitia",
"Miguel A.",
""
],
[
"Ortiz",
"C.",
""
],
[
"Lopez-Dominguez",
"J. C.",
""
],
[
"Hinojosa-Ruiz",
"Sinhue",
""
],
[
"Reyes-Ibarra",
"Mayra J.",
""
]
] | This paper is dedicated to revisit the modifications caused by branes in the collapse of a stellar structure under the Snyder-Oppenheimer scheme. Due to the homogeneity and isotropy of the model, we choose study the case of a closed geometry described by $k=1$, through the tool of dynamical systems. We revisit the diff... |
1412.3662 | Zeng-Bing Chen | Zeng-Bing Chen | Quantum Information Dynamics of Spacetime and Matter | 17 pages, no figure; improved version. Comments are welcome | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was known long ago that quantum theory and general relativity, two pillars
of modern physics, are in sharp conflict in their foundations. Their
fundamental inconsistencies render a consistent theory of quantum gravity the
most challenging problem in physics. Here we propose an information-complete
quantum field th... | [
{
"created": "Fri, 5 Dec 2014 13:29:16 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Apr 2015 07:55:24 GMT",
"version": "v2"
},
{
"created": "Mon, 25 May 2015 15:46:14 GMT",
"version": "v3"
},
{
"created": "Sat, 29 Aug 2015 17:27:09 GMT",
"version": "v4"
},
{
"cre... | 2019-07-04 | [
[
"Chen",
"Zeng-Bing",
""
]
] | It was known long ago that quantum theory and general relativity, two pillars of modern physics, are in sharp conflict in their foundations. Their fundamental inconsistencies render a consistent theory of quantum gravity the most challenging problem in physics. Here we propose an information-complete quantum field theo... |
1902.09940 | Giorgio Papini | Giorgio Papini | Long range order in gravity | 7 pages, 0 figures | null | 10.1142/S0218271819500998 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravity induced condensation takes the form of momentum alignment in an
ensemble of identical particles. Use is made of a one-dimensional Ising model
to calculate the alignment per particle and the correlation length as a
function of the temperature. These parameters indicate that momentum alignment
is possible in th... | [
{
"created": "Tue, 26 Feb 2019 14:04:22 GMT",
"version": "v1"
}
] | 2019-06-26 | [
[
"Papini",
"Giorgio",
""
]
] | Gravity induced condensation takes the form of momentum alignment in an ensemble of identical particles. Use is made of a one-dimensional Ising model to calculate the alignment per particle and the correlation length as a function of the temperature. These parameters indicate that momentum alignment is possible in the ... |
1908.05312 | Sandipan Sengupta | Sandipan Sengupta | Schwarzschild phase without a black hole | To be published in the MG15 conference proceedings (based on the talk
at the 15th Marcel Grossman Meeting on General Relativity, Rome, July 2018) | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a smooth extension of the Schwarzschild exterior geometry, where
the singular interior is superceded by a vacuum phase with vanishing metric
determinant. Unlike the Kruskal-Szekeres continuation, this solution to the
first-order field equations in vacuum has no singularity in the curvature
two-form fields,... | [
{
"created": "Wed, 14 Aug 2019 18:56:00 GMT",
"version": "v1"
},
{
"created": "Sun, 18 Aug 2019 02:51:15 GMT",
"version": "v2"
}
] | 2019-08-20 | [
[
"Sengupta",
"Sandipan",
""
]
] | We present a smooth extension of the Schwarzschild exterior geometry, where the singular interior is superceded by a vacuum phase with vanishing metric determinant. Unlike the Kruskal-Szekeres continuation, this solution to the first-order field equations in vacuum has no singularity in the curvature two-form fields, n... |
gr-qc/9302023 | null | Niall \'O Murchadha | Brill Waves | 15 pages, plain tex, CUP macro included | null | null | null | gr-qc | null | Brill waves are the simplest (non-trivial) solutions to the vacuum
constraints of general relativity. They are also rich enough in structure to
allow us believe that they capture, at least in part, the generic properties of
solutions of the Einstein equations. As such, they deserve the closest
attention. This article... | [
{
"created": "Fri, 19 Feb 1993 12:36:00 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Murchadha",
"Niall Ó",
""
]
] | Brill waves are the simplest (non-trivial) solutions to the vacuum constraints of general relativity. They are also rich enough in structure to allow us believe that they capture, at least in part, the generic properties of solutions of the Einstein equations. As such, they deserve the closest attention. This article i... |
2008.09602 | Supriya Pan | Yu. L. Bolotin, V. A. Cherkaskiy, M. I. Konchatnyi, Supriya Pan and
Weiqiang Yang | Do current observations support transient acceleration of our universe? | 18 pages, 1 Table and 5 Figures; typos corrected; version published
in IJMPD | Int. J. Mod. Phys. D 31 (2022), no 05, 2250036 | 10.1142/S0218271822500365 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | In the present article we have investigated a very natural question regarding
the dynamics of the universe, namely, the possibility of its decelerating phase
immediately after the present accelerating phase. To begin with, we have
focused on the matter creation theory which is considered to be a viable
alternative to... | [
{
"created": "Fri, 21 Aug 2020 17:53:59 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Aug 2020 13:52:57 GMT",
"version": "v2"
},
{
"created": "Sun, 24 Apr 2022 06:22:03 GMT",
"version": "v3"
}
] | 2022-04-26 | [
[
"Bolotin",
"Yu. L.",
""
],
[
"Cherkaskiy",
"V. A.",
""
],
[
"Konchatnyi",
"M. I.",
""
],
[
"Pan",
"Supriya",
""
],
[
"Yang",
"Weiqiang",
""
]
] | In the present article we have investigated a very natural question regarding the dynamics of the universe, namely, the possibility of its decelerating phase immediately after the present accelerating phase. To begin with, we have focused on the matter creation theory which is considered to be a viable alternative to d... |
gr-qc/0511135 | Volker Perlick | Wolfgang Hasse and Volker Perlick | A Morse-theoretical analysis of gravitational lensing by a Kerr-Newman
black hole | 14 pages, 2 figures; REVTEX; submitted to J. Math. Phys | J.Math.Phys. 47 (2006) 042503 | 10.1063/1.2188209 | null | gr-qc | null | Consider, in the domain of outer communication of a Kerr-Newman black hole, a
point (observation event) and a timelike curve (worldline of light source).
Assume that the worldline of the source (i) has no past end-point, (ii) does
not intersect the caustic of the past light-cone of the observation event, and
(iii) go... | [
{
"created": "Fri, 25 Nov 2005 00:02:42 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Hasse",
"Wolfgang",
""
],
[
"Perlick",
"Volker",
""
]
] | Consider, in the domain of outer communication of a Kerr-Newman black hole, a point (observation event) and a timelike curve (worldline of light source). Assume that the worldline of the source (i) has no past end-point, (ii) does not intersect the caustic of the past light-cone of the observation event, and (iii) goes... |
gr-qc/0401024 | P. S. Negi | P. S. Negi | Exact Solutions of Einstein's Field Equations | 29 pages | Int.J.Theor.Phys. 45 (2006) 1684-1702 | null | null | gr-qc | null | We examine various well known exact solutions available in the literature to
investigate the recent criterion obtained in ref. [20] which should be
fulfilled by any static and spherically symmetric solution in the state of
hydrostatic equilibrium. It is seen that this criterion is fulfilled only by
(i) the regular so... | [
{
"created": "Thu, 8 Jan 2004 07:59:04 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Negi",
"P. S.",
""
]
] | We examine various well known exact solutions available in the literature to investigate the recent criterion obtained in ref. [20] which should be fulfilled by any static and spherically symmetric solution in the state of hydrostatic equilibrium. It is seen that this criterion is fulfilled only by (i) the regular solu... |
gr-qc/0301114 | Michael Edmund Tobar | Michael Edmund Tobar and John Gideon Hartnett | Proposal for a New Test of the Time Independence Of The Fine Structure
Constant, alpha, Using Orthogonally Polarised Whispering Gallery Modes in a
Single Sapphire Resonator | 1 pdf. Accepted to be published in Physical Review D | Phys.Rev. D67 (2003) 062001 | 10.1103/PhysRevD.67.062001 | null | gr-qc | null | A new experiment to test for the time independence of the fine structure
constant, alpha, is proposed. The experiment utilizes orthogonally polarized
Transverse Electric and Transverse Magnetic Whispering Gallery Modes in a
single sapphire resonator tuned to similar frequencies. When configured as a
dual mode sapphir... | [
{
"created": "Tue, 28 Jan 2003 00:56:08 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Tobar",
"Michael Edmund",
""
],
[
"Hartnett",
"John Gideon",
""
]
] | A new experiment to test for the time independence of the fine structure constant, alpha, is proposed. The experiment utilizes orthogonally polarized Transverse Electric and Transverse Magnetic Whispering Gallery Modes in a single sapphire resonator tuned to similar frequencies. When configured as a dual mode sapphire ... |
1407.3904 | Sam Dolan Dr | Sam R. Dolan, Leandro A. Oliveira, Luis C. B. Crispino | Quasinormal modes and Regge poles of the canonical acoustic hole | 10 pages, 4 figures, 3 tables. To match published version (2010) | Phys. Rev. D 82, 084037 (2010) | 10.1103/PhysRevD.82.084037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the quasinormal mode frequencies and Regge poles of the canonical
acoustic hole (a black hole analogue), using three methods. First, we show how
damped oscillations arise by evolving generic perturbations in the time domain
using a simple finite-difference scheme. We use our results to estimate the
fundame... | [
{
"created": "Tue, 15 Jul 2014 08:18:16 GMT",
"version": "v1"
}
] | 2014-07-16 | [
[
"Dolan",
"Sam R.",
""
],
[
"Oliveira",
"Leandro A.",
""
],
[
"Crispino",
"Luis C. B.",
""
]
] | We compute the quasinormal mode frequencies and Regge poles of the canonical acoustic hole (a black hole analogue), using three methods. First, we show how damped oscillations arise by evolving generic perturbations in the time domain using a simple finite-difference scheme. We use our results to estimate the fundament... |
2112.12335 | Chul-Moon Yoo | Chul-Moon Yoo and Tomohiro Harada and Shin'ichi Hirano and Hirotada
Okawa and Misao Sasaki | Primordial black hole formation from massless scalar isocurvature | 17 pages, 6 figures | null | 10.1103/PhysRevD.105.103538 | YITP-21-161, RUP-21-23 | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We numerically study the primordial black hole (PBH) formation by an
isocurvature perturbation of a massless scalar field on super Hubble scales in
the radiation-dominated universe. As a first step we perform simulations of
spherically symmetric configurations. For the initial condition, we employ the
spatial gradien... | [
{
"created": "Thu, 23 Dec 2021 03:12:24 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Jan 2022 07:13:50 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Jun 2022 08:50:11 GMT",
"version": "v3"
}
] | 2022-06-22 | [
[
"Yoo",
"Chul-Moon",
""
],
[
"Harada",
"Tomohiro",
""
],
[
"Hirano",
"Shin'ichi",
""
],
[
"Okawa",
"Hirotada",
""
],
[
"Sasaki",
"Misao",
""
]
] | We numerically study the primordial black hole (PBH) formation by an isocurvature perturbation of a massless scalar field on super Hubble scales in the radiation-dominated universe. As a first step we perform simulations of spherically symmetric configurations. For the initial condition, we employ the spatial gradient ... |
2006.00800 | Artur Alho | Artur Alho, Claes Uggla, John Wainwright | Dynamical systems in perturbative scalar field cosmology | 27 pages, 12 figures. [v2] 29 pages, matches final published version | null | 10.1088/1361-6382/abb73a | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive a new \emph{regular} dynamical system on a 3-dimensional
\emph{compact} state space describing linear scalar perturbations of spatially
flat Robertson-Walker geometries for relativistic models with a minimally
coupled scalar field with an exponential potential. This enables us to
construct the global soluti... | [
{
"created": "Mon, 1 Jun 2020 09:01:18 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Oct 2020 11:58:32 GMT",
"version": "v2"
}
] | 2020-12-02 | [
[
"Alho",
"Artur",
""
],
[
"Uggla",
"Claes",
""
],
[
"Wainwright",
"John",
""
]
] | We derive a new \emph{regular} dynamical system on a 3-dimensional \emph{compact} state space describing linear scalar perturbations of spatially flat Robertson-Walker geometries for relativistic models with a minimally coupled scalar field with an exponential potential. This enables us to construct the global solution... |
1410.8815 | C\'edric Huwyler | C\'edric Huwyler, Edward K. Porter, Philippe Jetzer | Supermassive Black Hole Tests of General Relativity with eLISA | 13 pages, 5 figures | null | 10.1103/PhysRevD.91.024037 | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the parameterized post-Einsteinian (ppE) scheme devised by Yunes
and Pretorius, which introduces corrections to the post-Newtonian coefficients
of the frequency domain gravitational waveform in order to emulate alternative
theories of gravity, we compute analytical time domain waveforms that, after a
num... | [
{
"created": "Fri, 31 Oct 2014 17:11:42 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Jan 2015 16:12:05 GMT",
"version": "v2"
}
] | 2015-06-23 | [
[
"Huwyler",
"Cédric",
""
],
[
"Porter",
"Edward K.",
""
],
[
"Jetzer",
"Philippe",
""
]
] | Motivated by the parameterized post-Einsteinian (ppE) scheme devised by Yunes and Pretorius, which introduces corrections to the post-Newtonian coefficients of the frequency domain gravitational waveform in order to emulate alternative theories of gravity, we compute analytical time domain waveforms that, after a numer... |
gr-qc/9912088 | Ugur Camci | \.I. Y{\i}lmaz, \.I. Yavuz, H. Baysal, \.I. Tarhan and U. Camc{\i} | Curvature Inheritance Symmetry In Riemannian Spaces with Applications to
String Cloud and String Fluids | 14 pages, Latex, no figures, to appear in the International Journal
of Modern Physics D (IJMPD), Vol.8, No.5(Oct.,1999) | Int.J.Mod.Phys. D8 (1999) 659-668 | 10.1142/S0218271899000468 | null | gr-qc | null | We study, in this paper, curvature inheritance symmetry (CI),
$\pounds_{\xi}R_{bcd}^{a}=2\alpha R_{bcd}^{a}$, where $\alpha $ is a scalar
function, for string cloud and string fluid in the context of general
relativity. Also, we have obtained some result when a proper CI (i.e., $\alpha
\neq 0$) is also a conformal Ki... | [
{
"created": "Tue, 21 Dec 1999 11:27:10 GMT",
"version": "v1"
}
] | 2016-08-15 | [
[
"Yılmaz",
"İ.",
""
],
[
"Yavuz",
"İ.",
""
],
[
"Baysal",
"H.",
""
],
[
"Tarhan",
"İ.",
""
],
[
"Camcı",
"U.",
""
]
] | We study, in this paper, curvature inheritance symmetry (CI), $\pounds_{\xi}R_{bcd}^{a}=2\alpha R_{bcd}^{a}$, where $\alpha $ is a scalar function, for string cloud and string fluid in the context of general relativity. Also, we have obtained some result when a proper CI (i.e., $\alpha \neq 0$) is also a conformal Kill... |
1806.05498 | Orchidea Maria Lecian | Orchidea Maria Lecian | Gedanken Tests for Correlated Michelson Interferometers (One-
interferometer tests and two-interferometer tests: the role of
cosmologically-implemented models including Poincar\'e particles) | 4 pages, two figures; ICEEA2018 invited contribution paper for TPC
Chair - AEEA2018- AMMSA2018; Atlantis Press on Advances in Intelligent
Systems Research | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The features of correlated Michelson interferometers are for describing the
analysis of Einsteinian spacetime models, and the quantum geometries pertinent
with descriptions of GR compatible with particle Physics. Such apparati allow
for the spectral decomposition of fractional Planck-scale displacements
correlations ... | [
{
"created": "Thu, 14 Jun 2018 12:26:02 GMT",
"version": "v1"
}
] | 2018-06-20 | [
[
"Lecian",
"Orchidea Maria",
""
]
] | The features of correlated Michelson interferometers are for describing the analysis of Einsteinian spacetime models, and the quantum geometries pertinent with descriptions of GR compatible with particle Physics. Such apparati allow for the spectral decomposition of fractional Planck-scale displacements correlations an... |
gr-qc/0702114 | Gerald Marsh | Gerald E. Marsh | The infinite red-shift surfaces of the Kerr and Kerr-Newman solutions of
the Einstein field equations | 17 pages, 8 figures (Minor wording changes) | null | null | null | gr-qc | null | In contrast to the Schwarzschild solution, the infinite red-shift surfaces
and null surfaces of the Kerr solution to the axially-symmetric Einstein field
equations are distinct. Some three-dimensional depictions of these surfaces are
presented here for observers following the time-like Killing vector of the Kerr
and ... | [
{
"created": "Tue, 20 Feb 2007 20:31:41 GMT",
"version": "v1"
},
{
"created": "Sat, 28 Apr 2007 21:49:43 GMT",
"version": "v2"
},
{
"created": "Thu, 12 Jul 2007 18:32:15 GMT",
"version": "v3"
}
] | 2007-07-12 | [
[
"Marsh",
"Gerald E.",
""
]
] | In contrast to the Schwarzschild solution, the infinite red-shift surfaces and null surfaces of the Kerr solution to the axially-symmetric Einstein field equations are distinct. Some three-dimensional depictions of these surfaces are presented here for observers following the time-like Killing vector of the Kerr and Ke... |
2308.00082 | Francesco Bajardi | Francesco Bajardi, Salvatore Capozziello, Tiziana Di Salvo, Francesca
Spinnato | The Noether Symmetry Approach: Foundation and applications. The case of
scalar-tensor Gauss-Bonnet gravity | 13 pages, 1 figure. Accepted for publication in Symmetry | Symmetry, 15(9), 1625, 2023 | 10.3390/sym15091625 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We sketch the main features of the Noether Symmetry Approach, a method to
reduce and solve dynamics of physical systems by selecting Noether symmetries,
which correspond to conserved quantities. Specifically, we take into account
the vanishing Lie derivative condition for general canonical Lagrangians to
select symme... | [
{
"created": "Mon, 31 Jul 2023 18:55:50 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Aug 2023 10:05:34 GMT",
"version": "v2"
}
] | 2023-08-24 | [
[
"Bajardi",
"Francesco",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"Di Salvo",
"Tiziana",
""
],
[
"Spinnato",
"Francesca",
""
]
] | We sketch the main features of the Noether Symmetry Approach, a method to reduce and solve dynamics of physical systems by selecting Noether symmetries, which correspond to conserved quantities. Specifically, we take into account the vanishing Lie derivative condition for general canonical Lagrangians to select symmetr... |
2305.19171 | Arina Shtennikova | S. Mironov, A.Shtennikova | Perturbations in Horndeski theory above anisotropic cosmological
background | null | null | 10.1134/S002136402360204X | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Considering an anisotropic cosmological background is an interesting and
simultaneously challenging problem of theoretical physics, since we not only
assume a high degree of anisotropy in the early stages of the Universe, but
also observe it to a small degree until now. In this paper we have constructed
the unconstra... | [
{
"created": "Tue, 30 May 2023 16:16:02 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Feb 2024 12:44:12 GMT",
"version": "v2"
},
{
"created": "Tue, 26 Mar 2024 12:53:04 GMT",
"version": "v3"
}
] | 2024-03-27 | [
[
"Mironov",
"S.",
""
],
[
"Shtennikova",
"A.",
""
]
] | Considering an anisotropic cosmological background is an interesting and simultaneously challenging problem of theoretical physics, since we not only assume a high degree of anisotropy in the early stages of the Universe, but also observe it to a small degree until now. In this paper we have constructed the unconstrain... |
1210.4026 | Vishagan Sivanesan | Antonio Padilla and Vishagan Sivanesan | Covariant multi-galileons and their generalisation | Reference to recent proof of generality of multi-scalar theory added.
Some minor typos corrected | null | 10.1007/JHEP04(2013)032 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find a covariant completion of the flat-space multi-galileon theory,
preserving second-order field equations. We then generalise this to arrive at
an enlarged class of second order theories describing multiple scalars and a
single tensor, and conjecture that these are a multi-scalar version of
Horndeski's most gen... | [
{
"created": "Mon, 15 Oct 2012 13:36:31 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Jul 2013 11:09:49 GMT",
"version": "v2"
}
] | 2015-06-11 | [
[
"Padilla",
"Antonio",
""
],
[
"Sivanesan",
"Vishagan",
""
]
] | We find a covariant completion of the flat-space multi-galileon theory, preserving second-order field equations. We then generalise this to arrive at an enlarged class of second order theories describing multiple scalars and a single tensor, and conjecture that these are a multi-scalar version of Horndeski's most gener... |
1712.09125 | Stefano Viaggiu | Stefano Viaggiu | A quantum Friedmann flat spacetime: Uncertainty Relations,
Thermodynamics and some cosmological consequences | Contributed paper to the Fourteenth Marcel Grossmann Meeting on
General Relativity, University of Rome "La Sapienza", Italy, 12 - 18 July
2015; edited by Massimo Bianchi, Robert T Jantzen, Remo Ruffini. (World
Scientific, Singapore, 2017) p.3739 - p.3743. Contributions in parts present
on arXiv:1102.0894; arXiv... | null | 10.1142/9789813226609_0490 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present Friedmann flat spacetime uncertainty relations (STUR) together
with some cosmological implications. An interesting link between the Principle
of "gravitational stability against localization of events" (PGSL) and the
holographic Bekenstein entropy bound (HEB) is also investigated. The same
theorems leading... | [
{
"created": "Mon, 25 Dec 2017 20:12:29 GMT",
"version": "v1"
}
] | 2019-02-27 | [
[
"Viaggiu",
"Stefano",
""
]
] | We present Friedmann flat spacetime uncertainty relations (STUR) together with some cosmological implications. An interesting link between the Principle of "gravitational stability against localization of events" (PGSL) and the holographic Bekenstein entropy bound (HEB) is also investigated. The same theorems leading t... |
1406.7864 | Michael Bradley | S. Brian Edgar, Michael Bradley, M. Piedade Machado Ramos | Symmetry analysis of radiative spacetimes with a null isotropy using GHP
formalism | 25 pages | Gen. Relativ. Gravit. 46, 1797 (2014) | 10.1007/s10714-014-1797-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A complete and simple invariant classification of the conformally flat pure
radiation metrics with a negative cosmological constant that were obtained by
integration using the generalised invariant formalism is presented. We show
equivalence between these metrics and the corresponding type O subclass of the
more gene... | [
{
"created": "Mon, 30 Jun 2014 19:34:10 GMT",
"version": "v1"
}
] | 2015-08-03 | [
[
"Edgar",
"S. Brian",
""
],
[
"Bradley",
"Michael",
""
],
[
"Ramos",
"M. Piedade Machado",
""
]
] | A complete and simple invariant classification of the conformally flat pure radiation metrics with a negative cosmological constant that were obtained by integration using the generalised invariant formalism is presented. We show equivalence between these metrics and the corresponding type O subclass of the more genera... |
gr-qc/0011080 | Guillermo A. Mena Marugan | Nenad Manojlovic (Univ. Algarve, Faro, Portugal) and Guillermo A. Mena
Marugan (CSIC, Madrid, Spain) | Asymptotic behaviour of cylindrical waves interacting with spinning
strings | 25 pages, accepted for publication in Classical and Quantum Gravity | Class.Quant.Grav. 18 (2001) 2065-2086 | 10.1088/0264-9381/18/11/305 | null | gr-qc | null | We consider a family of cylindrical spacetimes endowed with angular momentum
that are solutions to the vacuum Einstein equations outside the symmetry axis.
This family was recently obtained by performing a complete gauge fixing adapted
to cylindrical symmetry. In the present work, we find boundary conditions that
ens... | [
{
"created": "Wed, 22 Nov 2000 14:02:30 GMT",
"version": "v1"
},
{
"created": "Fri, 4 May 2001 16:48:03 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Manojlovic",
"Nenad",
"",
"Univ. Algarve, Faro, Portugal"
],
[
"Marugan",
"Guillermo A. Mena",
"",
"CSIC, Madrid, Spain"
]
] | We consider a family of cylindrical spacetimes endowed with angular momentum that are solutions to the vacuum Einstein equations outside the symmetry axis. This family was recently obtained by performing a complete gauge fixing adapted to cylindrical symmetry. In the present work, we find boundary conditions that ensur... |
1106.2271 | Christian Fr{\o}nsdal | Christian Fr{\o}nsdal | Relativistic Thermodynamics, a Lagrangian Field Theory for general flows
including rotation | Minor revision.30 pages and 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The formulation of a dynamical theory of General Relativity, including
matter, is viewed as a problem of coupling Einstein's theory of pure gravity,
formulated as an action principle, to an independently chosen and well defined
field theory of matter. It is well known that this is accomplished in a most
natural way w... | [
{
"created": "Sun, 12 Jun 2011 01:51:37 GMT",
"version": "v1"
},
{
"created": "Sun, 8 Apr 2012 21:33:55 GMT",
"version": "v2"
},
{
"created": "Fri, 23 May 2014 07:44:16 GMT",
"version": "v3"
},
{
"created": "Fri, 22 Aug 2014 17:02:30 GMT",
"version": "v4"
},
{
"cr... | 2016-12-28 | [
[
"Frønsdal",
"Christian",
""
]
] | The formulation of a dynamical theory of General Relativity, including matter, is viewed as a problem of coupling Einstein's theory of pure gravity, formulated as an action principle, to an independently chosen and well defined field theory of matter. It is well known that this is accomplished in a most natural way whe... |
0806.1677 | Theodore A. Jacobson | Ted Jacobson and Renaud Parentani | Horizon surface gravity as 2d geodesic expansion | 7 pages; v2: 8 pages, derivation of (8) in section 3 streamlined,
added new expression for the 2d expansion, minor editing | Class.Quant.Grav.25:195009,2008 | 10.1088/0264-9381/25/19/195009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The surface gravity of any Killing horizon, in any spacetime dimension, can
be interpreted as a local, two-dimensional expansion rate seen by freely
falling observers when they cross the horizon. Any two-dimensional congruence
of geodesics invariant under the Killing flow can be used to define this
expansion, provide... | [
{
"created": "Tue, 10 Jun 2008 14:42:51 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Aug 2008 21:23:53 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Jacobson",
"Ted",
""
],
[
"Parentani",
"Renaud",
""
]
] | The surface gravity of any Killing horizon, in any spacetime dimension, can be interpreted as a local, two-dimensional expansion rate seen by freely falling observers when they cross the horizon. Any two-dimensional congruence of geodesics invariant under the Killing flow can be used to define this expansion, provided ... |
2201.01890 | Yunqi Liu | Chengxiang Sun, Yunqi Liu, Wei-Liang Qian, Ruihong Yue | Shadows of magnetically charged rotating black holes surrounded by
quintessence | null | null | 10.1088/1674-1137/ac588c | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work, we study the optical properties of a class of magnetically
charged rotating black hole spacetimes. The black holes in question are assumed
to be immersed in the quintessence field, and subsequently, the resulting black
hole shadows are expected to be modified by the presence of the dark energy. We
inves... | [
{
"created": "Thu, 6 Jan 2022 02:01:52 GMT",
"version": "v1"
}
] | 2022-06-15 | [
[
"Sun",
"Chengxiang",
""
],
[
"Liu",
"Yunqi",
""
],
[
"Qian",
"Wei-Liang",
""
],
[
"Yue",
"Ruihong",
""
]
] | In this work, we study the optical properties of a class of magnetically charged rotating black hole spacetimes. The black holes in question are assumed to be immersed in the quintessence field, and subsequently, the resulting black hole shadows are expected to be modified by the presence of the dark energy. We investi... |
1601.01973 | Ricardo Gonzalez Felipe | R. Gonzalez Felipe, D. Manreza Paret and A. Perez Martinez | Constraints on the braneworld from compact stars | 13 pages, 11 figures, 2 tables; new EoS considered, references and
comments added | null | null | CFTP/16-002 | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | According to the braneworld idea, ordinary matter is confined on a
3-dimensional space (brane) that is embedded in a higher-dimensional space-time
where gravity propagates. In this work, after reviewing the limits coming from
general relativity, finiteness of pressure and causality on the brane, we
derive observation... | [
{
"created": "Fri, 8 Jan 2016 18:44:40 GMT",
"version": "v1"
},
{
"created": "Mon, 16 May 2016 21:27:09 GMT",
"version": "v2"
}
] | 2016-05-18 | [
[
"Felipe",
"R. Gonzalez",
""
],
[
"Paret",
"D. Manreza",
""
],
[
"Martinez",
"A. Perez",
""
]
] | According to the braneworld idea, ordinary matter is confined on a 3-dimensional space (brane) that is embedded in a higher-dimensional space-time where gravity propagates. In this work, after reviewing the limits coming from general relativity, finiteness of pressure and causality on the brane, we derive observational... |
gr-qc/9805037 | Michael Pfenning | Michael John Pfenning and L. H. Ford (Dept. of Physics and Astronomy,
Tufts University) | Quantum Inequality Restrictions on Negative Energy Densities in Curved
Spacetimes | Doctoral Disseration, 87 pages, 13 EPSF figures, Book Format | null | null | Disseration 1998 | gr-qc | null | In quantum field theory, there exist states in which the expectation value of
the energy density for a quantized field is negative. These negative energy
densities lead to many problems. Although quantum field theory introduces
negative energies, it also provides constraints in the form of quantum
inequalities (QI's)... | [
{
"created": "Mon, 11 May 1998 20:28:32 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pfenning",
"Michael John",
"",
"Dept. of Physics and Astronomy,\n Tufts University"
],
[
"Ford",
"L. H.",
"",
"Dept. of Physics and Astronomy,\n Tufts University"
]
] | In quantum field theory, there exist states in which the expectation value of the energy density for a quantized field is negative. These negative energy densities lead to many problems. Although quantum field theory introduces negative energies, it also provides constraints in the form of quantum inequalities (QI's). ... |
gr-qc/9905006 | Mark D. Roberts | Mark D. Roberts | Imploding Scalar Fields | 25 pages, no diagrams or tables, LaTex2e | J.Math.Phys.37:4557-4573,1996 | 10.1063/1.531642 | null | gr-qc | null | Static spherically symmetric uncoupled scalar space-times have no event
horizon and a divergent Kretschmann singularity at the origin of the
coordinates. The singularity is always present so that non-static solutions
have been sought to see if the singularities can develop from an initially
singular free space-time. ... | [
{
"created": "Sun, 2 May 1999 16:09:12 GMT",
"version": "v1"
}
] | 2011-04-04 | [
[
"Roberts",
"Mark D.",
""
]
] | Static spherically symmetric uncoupled scalar space-times have no event horizon and a divergent Kretschmann singularity at the origin of the coordinates. The singularity is always present so that non-static solutions have been sought to see if the singularities can develop from an initially singular free space-time. In... |
2111.14149 | Alessandro Nagar | Angelica Albertini, Alessandro Nagar, Piero Rettegno, Simone Albanesi,
and Rossella Gamba | Waveforms and fluxes: Towards a self-consistent effective one body
waveform model for nonprecessing, coalescing black-hole binaries for third
generation detectors | 23 pages, 23 figures, submitted to Phys. Rev. D | null | 10.1103/PhysRevD.105.084025 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a comprehensive comparison between numerical relativity (NR)
angular momentum fluxes at infinity and the corresponding quantity entering the
radiation reaction in TEOBResumS, an Effective-One-Body (EOB) waveform model
for nonprecessing coalescing black hole binaries on quasi-circular orbits. This
compariso... | [
{
"created": "Sun, 28 Nov 2021 14:13:19 GMT",
"version": "v1"
}
] | 2022-04-27 | [
[
"Albertini",
"Angelica",
""
],
[
"Nagar",
"Alessandro",
""
],
[
"Rettegno",
"Piero",
""
],
[
"Albanesi",
"Simone",
""
],
[
"Gamba",
"Rossella",
""
]
] | We present a comprehensive comparison between numerical relativity (NR) angular momentum fluxes at infinity and the corresponding quantity entering the radiation reaction in TEOBResumS, an Effective-One-Body (EOB) waveform model for nonprecessing coalescing black hole binaries on quasi-circular orbits. This comparison ... |
2206.04155 | Sergio Campos | R. H. Longaresi and S. D. Campos | Entropy Production in the Inflationary Epoch Using the Gouy-Stodola
Theorem | null | null | 10.1142/S0217751X22501494 | null | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | In this work, we use the Gouy-Stodola theorem to calculate the entropy
production rate in the inflationary epoch of the universe. This theorem allows
us the simple calculation of entropy and entropy production rate occasioned by
the decaying of the inflaton scalar field. Both the entropy and entropy
production rate a... | [
{
"created": "Wed, 8 Jun 2022 20:35:54 GMT",
"version": "v1"
}
] | 2022-11-09 | [
[
"Longaresi",
"R. H.",
""
],
[
"Campos",
"S. D.",
""
]
] | In this work, we use the Gouy-Stodola theorem to calculate the entropy production rate in the inflationary epoch of the universe. This theorem allows us the simple calculation of entropy and entropy production rate occasioned by the decaying of the inflaton scalar field. Both the entropy and entropy production rate ach... |
gr-qc/9706060 | Marcelo Schiffer | Marcelo Schiffer | The random walks of a Schwarzschild black hole | 10 pages | null | null | null | gr-qc | null | We show that spinless and neutral black holes in thermal equilibrium with
radiation undergo fluctuations of charge and angular momentum. The
corresponding spreads for a black hole in contact with charged scalar particles
is calculated. The angular momentum spread turns out to grow with the size of
the cavity. Charge ... | [
{
"created": "Thu, 19 Jun 1997 14:03:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Schiffer",
"Marcelo",
""
]
] | We show that spinless and neutral black holes in thermal equilibrium with radiation undergo fluctuations of charge and angular momentum. The corresponding spreads for a black hole in contact with charged scalar particles is calculated. The angular momentum spread turns out to grow with the size of the cavity. Charge sp... |
gr-qc/0605119 | Kenichiro Konya | Kenichiro Konya | Gauss-Bonnet brane-world cosmology without $Z_{2}$-symmetry | 8 pages, 3 figures; Minor typos corrected. References added. V3:
Numerical errors are corrected. Fig.1 and Fig.3 are replaced. V4: published
version | Class.Quant.Grav.24:2761,2007 | 10.1088/0264-9381/24/10/019 | null | gr-qc | null | We consider a single 3-brane situated between two bulk spacetimes that posses
the same cosmological constant, but whose metrics do not posses a
$Z_{2}$-symmetry. On each side of the brane, the bulk is a solution to
Gauss-Bonnet gravity. This asymmetry modifies junction conditions, and so new
terms arise in the Friedm... | [
{
"created": "Mon, 22 May 2006 08:21:04 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Aug 2006 07:23:37 GMT",
"version": "v2"
},
{
"created": "Wed, 13 Sep 2006 03:12:56 GMT",
"version": "v3"
},
{
"created": "Mon, 7 May 2007 05:55:50 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Konya",
"Kenichiro",
""
]
] | We consider a single 3-brane situated between two bulk spacetimes that posses the same cosmological constant, but whose metrics do not posses a $Z_{2}$-symmetry. On each side of the brane, the bulk is a solution to Gauss-Bonnet gravity. This asymmetry modifies junction conditions, and so new terms arise in the Friedman... |
gr-qc/0608102 | Piotr Bizon | Piotr Bizo\'n, Tadeusz Chmaj, Bernd G. Schmidt | Codimension-two critical behavior in vacuum gravitational collapse | 4 pages, 5 figures, typos corrected | Phys.Rev.Lett. 97 (2006) 131101 | 10.1103/PhysRevLett.97.131101 | null | gr-qc hep-th | null | We consider the critical behavior at the threshold of black hole formation
for the five dimensional vacuum Einstein equations satisfying the
cohomogeneity-two triaxial Bianchi IX ansatz. Exploiting a discrete symmetry
present in this model we predict the existence of a codimension-two attractor.
This prediction is co... | [
{
"created": "Tue, 22 Aug 2006 07:48:12 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jan 2007 08:25:06 GMT",
"version": "v2"
}
] | 2013-11-18 | [
[
"Bizoń",
"Piotr",
""
],
[
"Chmaj",
"Tadeusz",
""
],
[
"Schmidt",
"Bernd G.",
""
]
] | We consider the critical behavior at the threshold of black hole formation for the five dimensional vacuum Einstein equations satisfying the cohomogeneity-two triaxial Bianchi IX ansatz. Exploiting a discrete symmetry present in this model we predict the existence of a codimension-two attractor. This prediction is conf... |
gr-qc/0502009 | Luis Herrera | L. Herrera, N.O. Santos | Cylindrical Collapse and Gravitational Waves | Some comments and a new reference added. To appear in Class. Quantum.
Grav | Class.Quant.Grav.22:2407-2413,2005 | 10.1088/0264-9381/22/12/007 | null | gr-qc astro-ph | null | We study the matching conditions for a collapsing anisotropic cylindrical
perfect fluid, and we show that its radial pressure is non zero on the surface
of the cylinder and proportional to the time dependent part of the field
produced by the collapsing fluid. This result resembles the one that arises for
the radiatio... | [
{
"created": "Wed, 2 Feb 2005 14:16:57 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Apr 2005 20:37:20 GMT",
"version": "v2"
}
] | 2010-11-05 | [
[
"Herrera",
"L.",
""
],
[
"Santos",
"N. O.",
""
]
] | We study the matching conditions for a collapsing anisotropic cylindrical perfect fluid, and we show that its radial pressure is non zero on the surface of the cylinder and proportional to the time dependent part of the field produced by the collapsing fluid. This result resembles the one that arises for the radiation ... |
2007.12176 | Salomeh Khoeini-Moghaddam | Salomeh Khoeini-Moghaddam | Non-trivial Extension of Starobinsky Inflation | 23 pages, 11 figures, Revised version | null | 10.1016/j.dark.2021.100822 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a non-canonic field in the context of Starobinsky inflation. We
work in Einstein-frame. In this frame, the gravitational part of the action is
equivalent to the Hilbert-Einstein action, plus a scalar field called scalaron.
We investigate a model with a heavy scalaron trapped at the effective
potential m... | [
{
"created": "Thu, 23 Jul 2020 12:36:39 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Oct 2020 14:31:52 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Apr 2021 11:08:54 GMT",
"version": "v3"
}
] | 2021-04-28 | [
[
"Khoeini-Moghaddam",
"Salomeh",
""
]
] | We consider a non-canonic field in the context of Starobinsky inflation. We work in Einstein-frame. In this frame, the gravitational part of the action is equivalent to the Hilbert-Einstein action, plus a scalar field called scalaron. We investigate a model with a heavy scalaron trapped at the effective potential minim... |
1610.09959 | Ksh Newton Singh | Ksh. Newton Singh, Neeraj Pant, M. Govender | Physical viability of fluid spheres satisfying the Karmarkar condition | 9 pages, 15 Figures Accepted in EPJC | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain a new solution of the TOV-equation for an anisotropic fluid
distribution by imposing the Karmarkar condition. In order to close the system
of equations we postulate an interesting form for the grr gravitational
potential which allows us to solve for gtt metric component via the Karmarkar
condition. We demon... | [
{
"created": "Fri, 28 Oct 2016 18:20:45 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Jan 2017 10:00:14 GMT",
"version": "v2"
}
] | 2017-01-10 | [
[
"Singh",
"Ksh. Newton",
""
],
[
"Pant",
"Neeraj",
""
],
[
"Govender",
"M.",
""
]
] | We obtain a new solution of the TOV-equation for an anisotropic fluid distribution by imposing the Karmarkar condition. In order to close the system of equations we postulate an interesting form for the grr gravitational potential which allows us to solve for gtt metric component via the Karmarkar condition. We demonst... |
1511.00637 | Mahouton J. Stephane Houndjo Dr | S. B. Nassur, A. V. Kpadonou, M. E. Rodrigues, M. J. S. Houndjo and J.
Tossa | Realistic f(T) model describing the de Sitter epoch of the dark energy
dominated universe | 16 pages and 4 figures | Canadian Journal of Physics, 2015, 93(10): 1050-1056 | 10.1139/cjp-2014-0447 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an exponential model within the so-called f(T) theory of gravity,
where $T$ denotes the torsion scalar. We focus our work on a cosmological
feature of such a model, checking whether it may describe the de Sitter stage
of the current universe through the analysis of the redshift z. Our results
shows that t... | [
{
"created": "Sat, 24 Oct 2015 08:43:05 GMT",
"version": "v1"
}
] | 2015-11-03 | [
[
"Nassur",
"S. B.",
""
],
[
"Kpadonou",
"A. V.",
""
],
[
"Rodrigues",
"M. E.",
""
],
[
"Houndjo",
"M. J. S.",
""
],
[
"Tossa",
"J.",
""
]
] | We consider an exponential model within the so-called f(T) theory of gravity, where $T$ denotes the torsion scalar. We focus our work on a cosmological feature of such a model, checking whether it may describe the de Sitter stage of the current universe through the analysis of the redshift z. Our results shows that the... |
gr-qc/9609015 | Miguel Alcubierre | Miguel Alcubierre (University of Wales, College of Cardiff) | The appearance of coordinate shocks in hyperbolic formalisms of General
Realtivity | REVTEX, 27 pages plus 11 Postscript figures. To be published in Phys.
Rev. D | Phys.Rev. D55 (1997) 5981-5991 | 10.1103/PhysRevD.55.5981 | null | gr-qc | null | I consider the appearance of shocks in hyperbolic formalisms of General
Relativity. I study the particular case of the Bona-Masso formalism with zero
shift vector and show how shocks associated with two families of characteristic
fields can develop. These shocks do not represent discontinuities in the
geometry of spa... | [
{
"created": "Thu, 5 Sep 1996 16:44:35 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Mar 1997 07:59:06 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Alcubierre",
"Miguel",
"",
"University of Wales, College of Cardiff"
]
] | I consider the appearance of shocks in hyperbolic formalisms of General Relativity. I study the particular case of the Bona-Masso formalism with zero shift vector and show how shocks associated with two families of characteristic fields can develop. These shocks do not represent discontinuities in the geometry of space... |
gr-qc/0507044 | Charles Wang | Charles H.-T. Wang | Unambiguous spin-gauge formulation of canonical general relativity with
conformorphism invariance | 4 pages; minor clarifications made; new refs added | Phys.Rev. D72 (2005) 087501 | 10.1103/PhysRevD.72.087501 | null | gr-qc | null | We present a parameter-free gauge formulation of general relativity in terms
of a new set of real spin connection variables. The theory is constructed by
extending the phase space of the recently formulated conformal geometrodynamics
for canonical gravity to accommodate a spin gauge description. This leads to a
furth... | [
{
"created": "Sun, 10 Jul 2005 18:53:05 GMT",
"version": "v1"
},
{
"created": "Sat, 16 Jul 2005 23:19:32 GMT",
"version": "v2"
},
{
"created": "Fri, 26 Aug 2005 10:57:24 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Wang",
"Charles H. -T.",
""
]
] | We present a parameter-free gauge formulation of general relativity in terms of a new set of real spin connection variables. The theory is constructed by extending the phase space of the recently formulated conformal geometrodynamics for canonical gravity to accommodate a spin gauge description. This leads to a further... |
gr-qc/0407103 | Guido Cognola | Guido Cognola and Sergio Zerbini | Minisuperspace Approach of Generalized Gravitational Models | 7 pages, LaTex, to appear in QG issue of TSPU Vestnik | null | null | null | gr-qc | null | Motivated by the dark energy issue, the minisuperspace approach for general
relativistic cosmological theories is outlined.
| [
{
"created": "Tue, 27 Jul 2004 13:50:32 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cognola",
"Guido",
""
],
[
"Zerbini",
"Sergio",
""
]
] | Motivated by the dark energy issue, the minisuperspace approach for general relativistic cosmological theories is outlined. |
2211.04155 | Kaushik Paul | Kaushik Paul, Chandra Kant Mishra | Spin effects in Spherical Harmonic Modes of Gravitational Waves from
Eccentric Compact Binary Inspirals | 19 pages, 0 figures, version as accepted in PRD | Phys. Rev. D 108, 024023 (2023) | 10.1103/PhysRevD.108.024023 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We compute the leading and sub-leading spin effects through the second
post-Newtonian order (2PN) in spherical harmonic modes of gravitational
waveforms from inspiralling compact binaries in non-circular orbits with
non-precessing components. The two spin couplings, linear-in-spin (spin-orbit;
SO) and quadratic-in-sp... | [
{
"created": "Tue, 8 Nov 2022 10:52:28 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Aug 2023 12:02:27 GMT",
"version": "v2"
}
] | 2023-08-07 | [
[
"Paul",
"Kaushik",
""
],
[
"Mishra",
"Chandra Kant",
""
]
] | We compute the leading and sub-leading spin effects through the second post-Newtonian order (2PN) in spherical harmonic modes of gravitational waveforms from inspiralling compact binaries in non-circular orbits with non-precessing components. The two spin couplings, linear-in-spin (spin-orbit; SO) and quadratic-in-spin... |
gr-qc/0505070 | Filimonova Irina V | S.S. Gershtein, A.A. Logunov, M.A.Mestvirishvili | Repulsive force in the field theory of gravitation | 22 pages, Plenary talk presented at Workshop on High Energy
Physics&Field Theory (Protvino, Russia, 2005) | Theor.Math.Phys.145:1604-1618,2005; Teor.Mat.Fiz.145:272-288,2005 | 10.1007/s11232-005-0186-7 | HEPFT/2005/9 | gr-qc | null | It is shown that the slowing down of the rate of time referencing to the
inertial time leads in the field theory of gravitation to arising of repulsive
forces which remove the cosmological singularity in the evolution of a
homogeneous and isotropic universe and stop the collapse of large masses.
| [
{
"created": "Mon, 16 May 2005 09:39:41 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Jun 2005 10:33:27 GMT",
"version": "v2"
},
{
"created": "Wed, 21 Feb 2007 13:03:00 GMT",
"version": "v3"
}
] | 2009-04-28 | [
[
"Gershtein",
"S. S.",
""
],
[
"Logunov",
"A. A.",
""
],
[
"Mestvirishvili",
"M. A.",
""
]
] | It is shown that the slowing down of the rate of time referencing to the inertial time leads in the field theory of gravitation to arising of repulsive forces which remove the cosmological singularity in the evolution of a homogeneous and isotropic universe and stop the collapse of large masses. |
2012.09781 | Ward Struyve | Christian Maes, Kasper Meerts, Ward Struyve | Wave mechanics for gravity with point-particles | 10 pages, LaTeX; v2 minor improvements | Class. Quantum Grav. 38, 175003 (2021) | 10.1088/1361-6382/ac12e3 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We consider non-relativistic point-particles coupled to Einstein gravity and
their canonical quantization. From the resulting Wheeler-DeWitt wave equation
we determine a quantum version of geometrodynamics, where the coupled evolution
of particle positions and 3-metric is guided by the wave function. We find that
thi... | [
{
"created": "Thu, 17 Dec 2020 17:47:32 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Aug 2021 06:59:17 GMT",
"version": "v2"
}
] | 2021-08-19 | [
[
"Maes",
"Christian",
""
],
[
"Meerts",
"Kasper",
""
],
[
"Struyve",
"Ward",
""
]
] | We consider non-relativistic point-particles coupled to Einstein gravity and their canonical quantization. From the resulting Wheeler-DeWitt wave equation we determine a quantum version of geometrodynamics, where the coupled evolution of particle positions and 3-metric is guided by the wave function. We find that this ... |
1405.1045 | Shahar Hod | Shahar Hod | Algebraically special resonances of the Kerr-black-hole-mirror bomb | 15 pages | Physical Review D 88, 124007 (2013) | 10.1103/PhysRevD.88.124007 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A co-rotating bosonic field interacting with a spinning Kerr black hole can
extract rotational energy and angular momentum from the hole. This intriguing
phenomenon is known as superradiant scattering. As pointed out by Press and
Teukolsky, the black-hole-field system can be made unstable (explosive) by
placing a ref... | [
{
"created": "Mon, 5 May 2014 20:00:18 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Hod",
"Shahar",
""
]
] | A co-rotating bosonic field interacting with a spinning Kerr black hole can extract rotational energy and angular momentum from the hole. This intriguing phenomenon is known as superradiant scattering. As pointed out by Press and Teukolsky, the black-hole-field system can be made unstable (explosive) by placing a refle... |
gr-qc/0505138 | M Iftime | J. Stachel, M. Iftime | Fibered Manifolds, Natural Bundles, Structured Sets, G-Sets and all
that: The Hole Story from Space Time to Elementary Particles | 40 pages | null | null | null | gr-qc | null | In this paper we review the hole argument for the space-time points and
elementary particles and generalize the hole argument to include all geometric
object fields and diffeomorphisms; and, by application of forgetful functors to
abstract from differentiability and even continuity, the hole argument is
applied to a ... | [
{
"created": "Fri, 27 May 2005 18:01:09 GMT",
"version": "v1"
},
{
"created": "Sat, 28 May 2005 19:22:25 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Stachel",
"J.",
""
],
[
"Iftime",
"M.",
""
]
] | In this paper we review the hole argument for the space-time points and elementary particles and generalize the hole argument to include all geometric object fields and diffeomorphisms; and, by application of forgetful functors to abstract from differentiability and even continuity, the hole argument is applied to a mu... |
1712.05502 | Takafumi Kokubu | Takafumi Kokubu, Sanjay Jhingan and Tomohiro Harada | Energy emission from high curvature region and its backreation | 18pages, 3 figures, accepted version | Phys. Rev. D 97, 104014 (2018) | 10.1103/PhysRevD.97.104014 | KEK-Cosmo-218, KEK-TH-2022, RUP 17-25 | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A strong gravity naked singular region can give important clues towards
understanding classical as well as spontaneous nature of General Relativity. We
propose here a model for energy emission from a naked singular region in a
self-similar dust spacetime by gluing two self-similar dust solutions at the
Cauchy horizon... | [
{
"created": "Fri, 15 Dec 2017 01:45:38 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Dec 2017 07:01:09 GMT",
"version": "v2"
},
{
"created": "Mon, 16 Apr 2018 03:18:45 GMT",
"version": "v3"
},
{
"created": "Wed, 16 May 2018 01:06:49 GMT",
"version": "v4"
}
] | 2018-05-23 | [
[
"Kokubu",
"Takafumi",
""
],
[
"Jhingan",
"Sanjay",
""
],
[
"Harada",
"Tomohiro",
""
]
] | A strong gravity naked singular region can give important clues towards understanding classical as well as spontaneous nature of General Relativity. We propose here a model for energy emission from a naked singular region in a self-similar dust spacetime by gluing two self-similar dust solutions at the Cauchy horizon. ... |
2107.04791 | Hideki Maeda | Hideki Maeda | Quest for realistic non-singular black-hole geometries: Regular-center
type | 62 pages, 7 figures, 7 tables; v5, Appendix B on Jacobi field and
tidal force added, final version to appear in JHEP | JHEP 11 (2022) 108 | 10.1007/JHEP11(2022)108 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose seven criteria to single out physically reasonable non-singular
black-hole models and adopt them to four different spherically symmetric models
with a regular center and their rotating counterparts. In general relativity,
all such non-singular black holes are non-generic with a certain matter field
includi... | [
{
"created": "Sat, 10 Jul 2021 08:33:46 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Jul 2021 03:20:41 GMT",
"version": "v2"
},
{
"created": "Tue, 5 Jul 2022 13:59:26 GMT",
"version": "v3"
},
{
"created": "Wed, 6 Jul 2022 15:24:25 GMT",
"version": "v4"
},
{
"cre... | 2023-04-21 | [
[
"Maeda",
"Hideki",
""
]
] | We propose seven criteria to single out physically reasonable non-singular black-hole models and adopt them to four different spherically symmetric models with a regular center and their rotating counterparts. In general relativity, all such non-singular black holes are non-generic with a certain matter field including... |
gr-qc/9808023 | Folkert Muller-Hoissen | A. Dimakis and F. Muller-Hoissen | Discrete Riemannian Geometry | 34 pages, 1 figure (eps), LaTeX, amssymb, epsfig | J.Math.Phys. 40 (1999) 1518-1548 | 10.1063/1.532819 | null | gr-qc hep-lat hep-th math-ph math.DG math.MP | null | Within a framework of noncommutative geometry, we develop an analogue of
(pseudo) Riemannian geometry on finite and discrete sets. On a finite set,
there is a counterpart of the continuum metric tensor with a simple geometric
interpretation. The latter is based on a correspondence between first order
differential cal... | [
{
"created": "Sat, 8 Aug 1998 15:57:23 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Dimakis",
"A.",
""
],
[
"Muller-Hoissen",
"F.",
""
]
] | Within a framework of noncommutative geometry, we develop an analogue of (pseudo) Riemannian geometry on finite and discrete sets. On a finite set, there is a counterpart of the continuum metric tensor with a simple geometric interpretation. The latter is based on a correspondence between first order differential calcu... |
1703.10180 | Francisco Linares | Francisco X. Linares Cede\~no, Alma X. Gonz\'alez-Morales and L.
Arturo Ure\~na-L\'opez | Cosmological signatures of ultralight dark matter with an axionlike
potential | 7 pages, 4 figures. Matches version published in PRD | Phys. Rev. D 96, 061301 (2017) | 10.1103/PhysRevD.96.061301 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Nonlinearities in a realistic axion field potential may play an important
role in the cosmological dynamics. In this paper we use the Boltzmann code
CLASS to solve the background and linear perturbations evolution of an axion
field and contrast our results with those of CDM and the free axion case. We
conclude that t... | [
{
"created": "Wed, 29 Mar 2017 18:07:43 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Aug 2017 20:38:15 GMT",
"version": "v2"
},
{
"created": "Mon, 2 Oct 2017 01:15:04 GMT",
"version": "v3"
}
] | 2017-10-04 | [
[
"Cedeño",
"Francisco X. Linares",
""
],
[
"González-Morales",
"Alma X.",
""
],
[
"Ureña-López",
"L. Arturo",
""
]
] | Nonlinearities in a realistic axion field potential may play an important role in the cosmological dynamics. In this paper we use the Boltzmann code CLASS to solve the background and linear perturbations evolution of an axion field and contrast our results with those of CDM and the free axion case. We conclude that the... |
1205.5307 | Philip Stamp | P. C. E. Stamp | Environmental Decoherence versus Intrinsic Decoherence | to be published in Phil Trans Roy Soc A | null | 10.1098/rsta.2012.0162 | null | gr-qc cond-mat.other quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the difference between standard environmental decoherence and
'intrinsic decoherence', which is taken to be an ineluctable process of Nature.
Environmental decoherence is typically modeled by spin bath or oscillator modes
- we review some of the unanswered questions not captured by these models, and
also th... | [
{
"created": "Wed, 23 May 2012 23:04:17 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Stamp",
"P. C. E.",
""
]
] | We review the difference between standard environmental decoherence and 'intrinsic decoherence', which is taken to be an ineluctable process of Nature. Environmental decoherence is typically modeled by spin bath or oscillator modes - we review some of the unanswered questions not captured by these models, and also the ... |
2309.02989 | Ezgi Yilmaz | Maxim Eingorn, Ezgi Yilmaz, A. Emrah Y\"ukselci, Alexander Zhuk | Mass density vs. energy density at cosmological scales | 11 pages, 4 figures; matches the published version in Physics Letters
B | Phys. Lett. B 851, 138564 (2024) | 10.1016/j.physletb.2024.138564 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the presence of the gravitational field, the energy density of matter no
longer coincides with its mass density. A discrepancy exists, of course, also
between the associated power spectra. Within the $\Lambda$CDM model, we derive
a formula that relates the power spectrum of the energy density to that of the
mass d... | [
{
"created": "Wed, 6 Sep 2023 13:34:36 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Apr 2024 08:09:07 GMT",
"version": "v2"
}
] | 2024-04-08 | [
[
"Eingorn",
"Maxim",
""
],
[
"Yilmaz",
"Ezgi",
""
],
[
"Yükselci",
"A. Emrah",
""
],
[
"Zhuk",
"Alexander",
""
]
] | In the presence of the gravitational field, the energy density of matter no longer coincides with its mass density. A discrepancy exists, of course, also between the associated power spectra. Within the $\Lambda$CDM model, we derive a formula that relates the power spectrum of the energy density to that of the mass den... |
gr-qc/9507042 | null | Jean-Guy Demers, Rene Lafrance and Robert C. Myers | Black Hole Entropy and Renormalization | 5 pages, uses AmS-TeX 2.1 with fic.sty included as a uufile. Based on
a talk presented at the 6th Canadian Conference on General Relativity and
Relativistic Astrophysics | null | null | McGill/95-39 | gr-qc hep-th | null | Using a new regulator, we examine 't Hooft's approach for evaluating black
hole entropy through a statistical-mechanical counting of states for a scalar
field propagating outside the event horizon. We find that this calculation
yields precisely the one-loop renormalization of the standard
Bekenstein-Hawking formula, ... | [
{
"created": "Wed, 19 Jul 1995 18:00:49 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Demers",
"Jean-Guy",
""
],
[
"Lafrance",
"Rene",
""
],
[
"Myers",
"Robert C.",
""
]
] | Using a new regulator, we examine 't Hooft's approach for evaluating black hole entropy through a statistical-mechanical counting of states for a scalar field propagating outside the event horizon. We find that this calculation yields precisely the one-loop renormalization of the standard Bekenstein-Hawking formula, $S... |
gr-qc/0004080 | Yi-Ping Qin | Yi-Ping Qin | Causal relation between regions I and IV of the Kruskal extension | 5 pages | null | null | null | gr-qc | null | By extending the exterior Schwarzschild spacetime in two opposite directions
with the Kruskal method, we get an extension which has the same T-X spacetime
diagram as has the conventional Kruskal extension, while allowing its regions I
and IV to correspond to different directions of the original spacetime. We
further ... | [
{
"created": "Thu, 27 Apr 2000 23:20:48 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Qin",
"Yi-Ping",
""
]
] | By extending the exterior Schwarzschild spacetime in two opposite directions with the Kruskal method, we get an extension which has the same T-X spacetime diagram as has the conventional Kruskal extension, while allowing its regions I and IV to correspond to different directions of the original spacetime. We further ex... |
1111.2192 | Tatyana P. Shestakova | T. P. Shestakova | A view on the problems of Quantum Gravity | 6 pages, talk presented at the International Conference on Quantum
Gravity "Loops 11", Madrid, May 2011 | J.Phys Conf.Ser.360:012015,2012 | 10.1088/1742-6596/360/1/012015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existing approaches to quantization of gravity aim at giving quantum
description of 3-geometry following to the ideas of the Wheeler -- DeWitt
geometrodynamics. In this description the role of gauge gravitational degrees
of freedom is missed. A probable alternative is to consider gravitational
dynamics in extende... | [
{
"created": "Wed, 9 Nov 2011 12:35:37 GMT",
"version": "v1"
}
] | 2012-05-31 | [
[
"Shestakova",
"T. P.",
""
]
] | The existing approaches to quantization of gravity aim at giving quantum description of 3-geometry following to the ideas of the Wheeler -- DeWitt geometrodynamics. In this description the role of gauge gravitational degrees of freedom is missed. A probable alternative is to consider gravitational dynamics in extended ... |
1508.07691 | Alfredo Lopez Ortega | A. Lopez-Ortega, M. Y. Rojas-Luis | Late time behavior of the massive Dirac field in D-dimensional Minkowski
spacetime | 9 pages, 2 figures | null | 10.1007/s10714-015-1952-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To extend previous results on the late time behavior of massive fields, for
the Dirac field propagating in the D-dimensional Minkowski spacetime we
calculate analytically its asymptotic tails. We find that the massive Dirac
field has an oscillatory inverse power law tail. The frequency of the
oscillations depends on ... | [
{
"created": "Mon, 31 Aug 2015 05:43:16 GMT",
"version": "v1"
}
] | 2015-09-01 | [
[
"Lopez-Ortega",
"A.",
""
],
[
"Rojas-Luis",
"M. Y.",
""
]
] | To extend previous results on the late time behavior of massive fields, for the Dirac field propagating in the D-dimensional Minkowski spacetime we calculate analytically its asymptotic tails. We find that the massive Dirac field has an oscillatory inverse power law tail. The frequency of the oscillations depends on th... |
1703.02653 | Kayll Lake | Kayll Lake | Does a Nash theory of gravity make dark energy superfluous? | 2 pages comments welcome | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently Aadne and Gr{\o}n have argued that dark energy may follow naturally
from a Nash theory of gravity. In this brief note I argue why this cannot be
the case.
| [
{
"created": "Wed, 8 Mar 2017 00:58:25 GMT",
"version": "v1"
}
] | 2017-03-13 | [
[
"Lake",
"Kayll",
""
]
] | Recently Aadne and Gr{\o}n have argued that dark energy may follow naturally from a Nash theory of gravity. In this brief note I argue why this cannot be the case. |
1007.5066 | T. Padmanabhan | T. Padmanabhan | Finite entanglement entropy from the zero-point-area of spacetime | ver 2: minor clarifications added; reformatted with Sections; 11
pages | Phys.Rev.D82:124025,2010 | 10.1103/PhysRevD.82.124025 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The calculation of entanglement entropy S of quantum fields in spacetimes
with horizon shows that, quite generically, S (a) is proportional to the area A
of the horizon and (b) is divergent. I argue that this divergence, which arises
even in the case of Rindler horizon in flat spacetime, is yet another
indication of ... | [
{
"created": "Wed, 28 Jul 2010 20:01:17 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Aug 2010 13:15:33 GMT",
"version": "v2"
}
] | 2010-12-24 | [
[
"Padmanabhan",
"T.",
""
]
] | The calculation of entanglement entropy S of quantum fields in spacetimes with horizon shows that, quite generically, S (a) is proportional to the area A of the horizon and (b) is divergent. I argue that this divergence, which arises even in the case of Rindler horizon in flat spacetime, is yet another indication of a ... |
1911.00747 | Muhsin Aljaf | Muhsin Aljaf, Daniele Gregoris, Martiros Khurshudyan | Phase space analysis and singularity classification for linearly
interacting dark energy models | 29 pages, 7 figures | Eur. Phys. J. C (2020) 80: 112 | 10.1140/epjc/s10052-020-7671-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, applying the Hartman-Grobman theorem we carry out a
qualitative late-time analysis of some unified dark energy-matter Friedmann
cosmological models, where the two interact through linear energy exchanges,
and the dark energy fluid obeys to the dynamical equation of state of
Redlich-Kwong, Modified Bert... | [
{
"created": "Sat, 2 Nov 2019 16:06:29 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Feb 2020 14:21:37 GMT",
"version": "v2"
}
] | 2020-05-06 | [
[
"Aljaf",
"Muhsin",
""
],
[
"Gregoris",
"Daniele",
""
],
[
"Khurshudyan",
"Martiros",
""
]
] | In this paper, applying the Hartman-Grobman theorem we carry out a qualitative late-time analysis of some unified dark energy-matter Friedmann cosmological models, where the two interact through linear energy exchanges, and the dark energy fluid obeys to the dynamical equation of state of Redlich-Kwong, Modified Berthe... |
1508.02647 | Yongge Ma | Hongguang Liu, Xin Wang, Haida Li, Yongge Ma | Distinguishing f(R) theories from general relativity by gravitational
lensing effect | 14 pages | Eur. Phys. J. C (2017) 77: 723 | 10.1140/epjc/s10052-017-5308-5 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The post-Newtonian formulation of a general class of f(R) theories is set up
to 3rd order approximation. It turns out that the information of a specific
form of f(R) gravity is encoded in the Yukawa potential, which is contained in
the perturbative expansion of the metric components. Although the Yukawa
potential is ... | [
{
"created": "Tue, 11 Aug 2015 16:18:57 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Aug 2017 17:49:43 GMT",
"version": "v2"
}
] | 2017-11-29 | [
[
"Liu",
"Hongguang",
""
],
[
"Wang",
"Xin",
""
],
[
"Li",
"Haida",
""
],
[
"Ma",
"Yongge",
""
]
] | The post-Newtonian formulation of a general class of f(R) theories is set up to 3rd order approximation. It turns out that the information of a specific form of f(R) gravity is encoded in the Yukawa potential, which is contained in the perturbative expansion of the metric components. Although the Yukawa potential is ca... |
0704.0435 | Marcello Ortaggio | Vojtech Pravda, Alena Pravdova, Marcello Ortaggio | Type D Einstein spacetimes in higher dimensions | 24 pages. v2: new appendix on geometric optics of higher dimensional
Kerr-NUT-AdS black holes, minor changes in the text. To appear in
Class.Quant.Grav | Class.Quant.Grav.24:4407-4428,2007 | 10.1088/0264-9381/24/17/009 | null | gr-qc hep-th | null | We show that all static spacetimes in higher dimensions are of Weyl types G,
I_i, D or O. This applies also to stationary spacetimes if additional
conditions are fulfilled, as for most known black hole/ring solutions. (The
conclusions change when the Killing generator becomes null, such as at Killing
horizons.) Next ... | [
{
"created": "Tue, 3 Apr 2007 16:59:08 GMT",
"version": "v1"
},
{
"created": "Sun, 22 Jul 2007 14:19:37 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Pravda",
"Vojtech",
""
],
[
"Pravdova",
"Alena",
""
],
[
"Ortaggio",
"Marcello",
""
]
] | We show that all static spacetimes in higher dimensions are of Weyl types G, I_i, D or O. This applies also to stationary spacetimes if additional conditions are fulfilled, as for most known black hole/ring solutions. (The conclusions change when the Killing generator becomes null, such as at Killing horizons.) Next we... |
1105.3258 | Xiao Zhang | Huabin Ge, Mingxing Luo, Qiping Su, Ding Wang, Xiao Zhang | Bondi-Sachs metrics and Photon Rockets | 12 pages, to appear in General Relativity and Gravitation | Gen.Rel.Grav.43:2729-2742,2011 | 10.1007/s10714-011-1197-3 | null | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Bondi-Sachs rockets with nonzero cosmological constant. We
observe that the acceleration of the systems arises naturally in the asymptotic
symmetries of (anti-) de Sitter spacetimes. Assuming the validity of the
concepts of energy and mass previously introduced in asymptotically flat
spacetimes, we find ... | [
{
"created": "Tue, 17 May 2011 02:04:49 GMT",
"version": "v1"
}
] | 2011-09-28 | [
[
"Ge",
"Huabin",
""
],
[
"Luo",
"Mingxing",
""
],
[
"Su",
"Qiping",
""
],
[
"Wang",
"Ding",
""
],
[
"Zhang",
"Xiao",
""
]
] | We study the Bondi-Sachs rockets with nonzero cosmological constant. We observe that the acceleration of the systems arises naturally in the asymptotic symmetries of (anti-) de Sitter spacetimes. Assuming the validity of the concepts of energy and mass previously introduced in asymptotically flat spacetimes, we find th... |
2208.07548 | Yunqi Liu | Yunqi Liu, Cheng-Yong Zhang, Qian Chen, Zhoujian Cao, Yu Tian, Bin
Wang | Critical scalarization and descalarization of black holes in a
generalized scalar-tensor theory | 9 pages, 9 figures | Sci. China Phys. Mech. Astron. 66, 100412 (2023) | 10.1007/s11433-023-2160-1. | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study the critical dynamics in the scalarization and descalarization in
the fully nonlinear dynamical evolution in a general theory with scalar field
coupling with both Gauss-Bonnet invariant and Ricci scalar. We explore how the
Gauss-Bonnet term triggers the black hole scalarization. A typical type I
critical phe... | [
{
"created": "Tue, 16 Aug 2022 05:39:43 GMT",
"version": "v1"
},
{
"created": "Sat, 28 Oct 2023 01:27:45 GMT",
"version": "v2"
}
] | 2023-10-31 | [
[
"Liu",
"Yunqi",
""
],
[
"Zhang",
"Cheng-Yong",
""
],
[
"Chen",
"Qian",
""
],
[
"Cao",
"Zhoujian",
""
],
[
"Tian",
"Yu",
""
],
[
"Wang",
"Bin",
""
]
] | We study the critical dynamics in the scalarization and descalarization in the fully nonlinear dynamical evolution in a general theory with scalar field coupling with both Gauss-Bonnet invariant and Ricci scalar. We explore how the Gauss-Bonnet term triggers the black hole scalarization. A typical type I critical pheno... |
1612.07954 | Arif Shaikh Md | Satadal Datta, Md Arif Shaikh and Tapas K Das | Acoustic geometry obtained through the perturbation of the Bernoulli's
constant | 22 pages, no figures | New Astronomy, Volume 63, pp. 65-74 (2018) | 10.1016/j.newast.2018.03.003 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For accretion onto astrophysical black holes, we demonstrate that linear
perturbation of Bernoulli's constant defined for an inviscid irrotational
adiabatic flow of perfect ideal fluid gives rise to phenomena of analogue
gravity. The formulation of our work is done in the Newtonian framework and
also within the Gener... | [
{
"created": "Fri, 23 Dec 2016 12:42:01 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Apr 2018 04:42:50 GMT",
"version": "v2"
}
] | 2018-04-13 | [
[
"Datta",
"Satadal",
""
],
[
"Shaikh",
"Md Arif",
""
],
[
"Das",
"Tapas K",
""
]
] | For accretion onto astrophysical black holes, we demonstrate that linear perturbation of Bernoulli's constant defined for an inviscid irrotational adiabatic flow of perfect ideal fluid gives rise to phenomena of analogue gravity. The formulation of our work is done in the Newtonian framework and also within the General... |
0901.4125 | Mihalis Dafermos | Mihalis Dafermos | The wave equation on axisymmetric stationary black hole backgrounds | 20 pages, 6 pages, to appear in the proceedings of the Spanish
Relativity Meeting, Salamanca 2008 | AIP Conf. Proc. 1122, (2009) 19-38 | 10.1063/1.3141255 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Understanding the behaviour of linear waves on black hole backgrounds is a
central problem in general relativity, intimately connected with the nonlinear
stability of the black hole spacetimes themselves as solutions to the Einstein
equations--a major open question in the subject. Nonetheless, it is only very
recentl... | [
{
"created": "Mon, 26 Jan 2009 21:38:07 GMT",
"version": "v1"
}
] | 2015-05-13 | [
[
"Dafermos",
"Mihalis",
""
]
] | Understanding the behaviour of linear waves on black hole backgrounds is a central problem in general relativity, intimately connected with the nonlinear stability of the black hole spacetimes themselves as solutions to the Einstein equations--a major open question in the subject. Nonetheless, it is only very recently ... |
gr-qc/0609124 | Tetsuya Shiromizu | Tetsuya Shiromizu, Hirotaka Yoshino | Positive energy theorem implies constraints on static steller models | 7 pages, final version accepted for publication in Prog. Theore. Phys | Prog.Theor.Phys.116:1159-1164,2007 | 10.1143/PTP.116.1159 | null | gr-qc | null | Using the positive energy theorem, we derive some constraints on static
steller models in asymptotically flat spacetimes in a general setting without
imposing spherical symmetry. We show that there exist no regular solutions
under certain conditions on the equation of state. As the contraposition, we
obtain some cons... | [
{
"created": "Wed, 27 Sep 2006 06:29:14 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Nov 2006 01:26:17 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Shiromizu",
"Tetsuya",
""
],
[
"Yoshino",
"Hirotaka",
""
]
] | Using the positive energy theorem, we derive some constraints on static steller models in asymptotically flat spacetimes in a general setting without imposing spherical symmetry. We show that there exist no regular solutions under certain conditions on the equation of state. As the contraposition, we obtain some constr... |
1007.5342 | Manasse R. Mbonye | Manasse R. Mbonye | A black hole cast on a non-commutative background | Expanded version of presentation made at 19th International
Conference of General Relativity and Gravitation. Small changes in abstract,
introduction and some references added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we describe a black hole, set on a non-commutative background.
The model, which is relatively simple, is an exact solution of the Einstein
Field Equations. Based on a proposition we put forward, we argue that
introducing a matter density field on a non-commutative background sets up a
mechanism that defo... | [
{
"created": "Thu, 29 Jul 2010 21:57:06 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Aug 2010 19:09:59 GMT",
"version": "v2"
}
] | 2010-08-06 | [
[
"Mbonye",
"Manasse R.",
""
]
] | In this work we describe a black hole, set on a non-commutative background. The model, which is relatively simple, is an exact solution of the Einstein Field Equations. Based on a proposition we put forward, we argue that introducing a matter density field on a non-commutative background sets up a mechanism that deform... |
gr-qc/0505143 | Burkhard Kleihaus | Burkhard Kleihaus (1), Jutta Kunz (1), Meike List (1 and 2) (1)
(Universit\"at Oldenburg) (2) (ZARM, Universit\"at Bremen) | Rotating Boson Stars and Q-Balls | 22 pages, 18 figures | Phys.Rev.D72:064002,2005 | 10.1103/PhysRevD.72.064002 | null | gr-qc | null | We consider axially symmetric, rotating boson stars. Their flat space limits
represent spinning Q-balls. We discuss their properties and determine their
domain of existence. Q-balls and boson stars are stationary solutions and exist
only in a limited frequency range. The coupling to gravity gives rise to a
spiral-lik... | [
{
"created": "Sun, 29 May 2005 11:15:28 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Kleihaus",
"Burkhard",
"",
"1 and 2"
],
[
"Kunz",
"Jutta",
"",
"1 and 2"
],
[
"List",
"Meike",
"",
"1 and 2"
]
] | We consider axially symmetric, rotating boson stars. Their flat space limits represent spinning Q-balls. We discuss their properties and determine their domain of existence. Q-balls and boson stars are stationary solutions and exist only in a limited frequency range. The coupling to gravity gives rise to a spiral-like ... |
1010.5765 | Adolfo De Un\'anue | Adolfo De Un\'anue | The quantum origins of the cosmological asymmetry | Ph. D. thesis in Spanish | null | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/3.0/ | The standard inflationary version of the origin of the cosmic structure as
the result of the quantum fluctuations during the inflationary stage is less
than fully satisfactory: how exactly does the Universe transit from a
homogeneous and isotropic stage to one where the quantum uncertainties become
actual inhomogeneo... | [
{
"created": "Wed, 27 Oct 2010 18:55:45 GMT",
"version": "v1"
}
] | 2015-03-17 | [
[
"De Unánue",
"Adolfo",
""
]
] | The standard inflationary version of the origin of the cosmic structure as the result of the quantum fluctuations during the inflationary stage is less than fully satisfactory: how exactly does the Universe transit from a homogeneous and isotropic stage to one where the quantum uncertainties become actual inhomogeneous... |
0907.3027 | Farhad Darabi | F. Darabi | Scale transformation, modified gravity, and Brans-Dicke theory | 14 pages, accepted for publication in IJTP | Int.J.Theor.Phys.49:2113-2120,2010 | 10.1007/s10773-010-0398-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A model of Einstein-Hilbert action subject to the scale transformation is
studied. By introducing a dilaton field as a means of scale transformation a
new action is obtained whose Einstein field equations are consistent with
traceless matter with non-vanishing modified terms together with dynamical
cosmological and g... | [
{
"created": "Fri, 17 Jul 2009 09:33:22 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jul 2009 06:32:41 GMT",
"version": "v2"
},
{
"created": "Tue, 24 Aug 2010 10:07:40 GMT",
"version": "v3"
}
] | 2010-08-25 | [
[
"Darabi",
"F.",
""
]
] | A model of Einstein-Hilbert action subject to the scale transformation is studied. By introducing a dilaton field as a means of scale transformation a new action is obtained whose Einstein field equations are consistent with traceless matter with non-vanishing modified terms together with dynamical cosmological and gra... |
gr-qc/0110077 | Manfred Requardt | Manfred Requardt | A Geometric Renormalisation Group in Discrete Quantum Space-Time | Latex, 39 pages, 6 figures, additional analytic and numerical results
concerning the analysis and characteristics of fixed point behavior and
criticality mainly in sect.5.2, some new references | J.Math.Phys.44:5588-5615,2003; J.Math.Phys.44:5588,2003 | 10.1063/1.1619579 | null | gr-qc cond-mat.dis-nn hep-th math-ph math.MP | null | We model quantum space-time on the Planck scale as dynamical networks of
elementary relations or time dependent random graphs, the time dependence being
an effect of the underlying dynamical network laws. We formulate a kind of
geometric renormalisation group on these (random) networks leading to a
hierarchy of incre... | [
{
"created": "Wed, 17 Oct 2001 09:10:21 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Nov 2002 09:53:36 GMT",
"version": "v2"
},
{
"created": "Tue, 25 Mar 2003 12:26:32 GMT",
"version": "v3"
}
] | 2011-07-19 | [
[
"Requardt",
"Manfred",
""
]
] | We model quantum space-time on the Planck scale as dynamical networks of elementary relations or time dependent random graphs, the time dependence being an effect of the underlying dynamical network laws. We formulate a kind of geometric renormalisation group on these (random) networks leading to a hierarchy of increas... |
1512.09375 | P. Isaac Ram\'irez-Baca | Eloy Ay\'on-Beato, P. Isaac Ram\'irez-Baca, C\'esar A.
Terrero-Escalante | Cosmological stealths with nonconformal couplings | 16 pages, 10 figures Approved to appear at Phys. Rev. D | Phys. Rev. D 97, 043505 (2018) | 10.1103/PhysRevD.97.043505 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we reconsider the existence of stealth fields during the
evolution of our Universe by admitting more realistic nonminimal couplings to
gravity than the conformal one. In the framework of the FRW cosmology we found
that inhomogeneous stealths, as those enabled in the conformal case, are only
allowed in d... | [
{
"created": "Tue, 29 Dec 2015 21:14:32 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Feb 2018 05:45:32 GMT",
"version": "v2"
}
] | 2018-02-13 | [
[
"Ayón-Beato",
"Eloy",
""
],
[
"Ramírez-Baca",
"P. Isaac",
""
],
[
"Terrero-Escalante",
"César A.",
""
]
] | In this paper we reconsider the existence of stealth fields during the evolution of our Universe by admitting more realistic nonminimal couplings to gravity than the conformal one. In the framework of the FRW cosmology we found that inhomogeneous stealths, as those enabled in the conformal case, are only allowed in de ... |
0903.4092 | Hakan Andreasson | Hakan Andreasson, Mikael Eklund, Gerhard Rein | A numerical investigation of the steady states of the spherically
symmetric Einstein-Vlasov-Maxwell system | 25 pages, 16 figures | Class.Quant.Grav.26:145003,2009 | 10.1088/0264-9381/26/14/145003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct, by numerical means, static solutions of the spherically
symmetric Einstein-Vlasov-Maxwell system and investigate various features of
the solutions. This extends a previous investigation \cite{AR1} of the
chargeless case. We study the possible shapes of the energy density profile as
a function of the are... | [
{
"created": "Tue, 24 Mar 2009 14:43:06 GMT",
"version": "v1"
}
] | 2011-01-24 | [
[
"Andreasson",
"Hakan",
""
],
[
"Eklund",
"Mikael",
""
],
[
"Rein",
"Gerhard",
""
]
] | We construct, by numerical means, static solutions of the spherically symmetric Einstein-Vlasov-Maxwell system and investigate various features of the solutions. This extends a previous investigation \cite{AR1} of the chargeless case. We study the possible shapes of the energy density profile as a function of the area ... |
1409.3921 | Hongbo Cheng | Jingyun Man, Hongbo Cheng | The time delay in strong gravitational lensing with Gauss-Bonnet
correction | 9 pages, 1 figure | Journal of Cosmology and Astroparticle Physics 1411(2014)025 | 10.1088/1475-7516/2014/11/025 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The time delay between two relativistic images in the strong gravitational
lensing governed by Gauss-Bonnet gravity is studied. We derive and calculate
the expression of time delay due to the Gauss-Bonnet coupling. It is shown that
the time delay for two images with larger space each other is longer. We also
find tha... | [
{
"created": "Sat, 13 Sep 2014 07:20:18 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Man",
"Jingyun",
""
],
[
"Cheng",
"Hongbo",
""
]
] | The time delay between two relativistic images in the strong gravitational lensing governed by Gauss-Bonnet gravity is studied. We derive and calculate the expression of time delay due to the Gauss-Bonnet coupling. It is shown that the time delay for two images with larger space each other is longer. We also find that ... |
1802.04760 | Pedro Pina Avelino | P. P. Avelino, R. P. L. Azevedo | Perfect fluid Lagrangian and its cosmological implications in theories
of gravity with nonminimally coupled matter fields | 6 pages, no figures, matches published version | Phys. Rev. D 97, 064018 (2018) | 10.1103/PhysRevD.97.064018 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we show that the on-shell Lagrangian of a perfect fluid depends
on microscopic properties of the fluid, giving specific examples of perfect
fluids with different on-shell Lagrangians but with the same energy-momentum
tensor. We demonstrate that if the fluid is constituted by localized
concentrations of ... | [
{
"created": "Tue, 13 Feb 2018 17:44:31 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Mar 2018 08:59:43 GMT",
"version": "v2"
}
] | 2018-03-28 | [
[
"Avelino",
"P. P.",
""
],
[
"Azevedo",
"R. P. L.",
""
]
] | In this paper we show that the on-shell Lagrangian of a perfect fluid depends on microscopic properties of the fluid, giving specific examples of perfect fluids with different on-shell Lagrangians but with the same energy-momentum tensor. We demonstrate that if the fluid is constituted by localized concentrations of en... |
2311.04857 | Imene Belahcene | Imene Belahcene, Wen-Biao Han | Comparing Repeated Gravitational-Wave Bursts Emitted by Cosmic Strings | 7 pages, 4 figures | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The principal energy loss mechanism in a Nambu-Goto cosmic string network
involves loop production and the subsequent gravitational-wave emission.
Recently, it has been shown that the loop oscillations produce repeated
gravitational-wave bursts emitted at cusps. The calculations are extended to
estimate the number of... | [
{
"created": "Wed, 8 Nov 2023 17:52:38 GMT",
"version": "v1"
}
] | 2023-11-09 | [
[
"Belahcene",
"Imene",
""
],
[
"Han",
"Wen-Biao",
""
]
] | The principal energy loss mechanism in a Nambu-Goto cosmic string network involves loop production and the subsequent gravitational-wave emission. Recently, it has been shown that the loop oscillations produce repeated gravitational-wave bursts emitted at cusps. The calculations are extended to estimate the number of b... |
1807.08708 | Adrian Kent | Adrian Kent (Centre for Quantum Information and Foundations, DAMTP,
University of Cambridge and Perimeter Institute for Theoretical Physics) | Simple Refutation of the Eppley-Hannah argument | Discussion extended; figure improved; typos fixed. Accepted version | Classical and Quantum Gravity 35 (24) 245008 (2018) | 10.1088/1361-6382/aaea20 | null | gr-qc physics.hist-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In an influential paper, Eppley and Hannah argued that gravity must
necessarily be quantized, by proposing a thought experiment involving classical
gravitational waves interacting with quantum matter. They argue the interaction
must either violate the uncertainty principle or allow superluminal signalling.
The feasib... | [
{
"created": "Mon, 23 Jul 2018 16:37:43 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Oct 2018 13:57:01 GMT",
"version": "v2"
},
{
"created": "Tue, 6 Nov 2018 15:47:18 GMT",
"version": "v3"
}
] | 2019-01-01 | [
[
"Kent",
"Adrian",
"",
"Centre for Quantum Information and Foundations, DAMTP,\n University of Cambridge and Perimeter Institute for Theoretical Physics"
]
] | In an influential paper, Eppley and Hannah argued that gravity must necessarily be quantized, by proposing a thought experiment involving classical gravitational waves interacting with quantum matter. They argue the interaction must either violate the uncertainty principle or allow superluminal signalling. The feasibil... |
gr-qc/9812056 | Jorma Louko | Jorma Louko and Kristin Schleich | The exponential law: Monopole detectors, Bogoliubov transformations, and
the thermal nature of the Euclidean vacuum in RP^3 de Sitter spacetime | 22 pages, REVTex v3.1 with amsfonts and epsf, includes 2 eps figures.
(v2: Minor typos corrected, references updated.) | Class.Quant.Grav. 16 (1999) 2005-2021 | 10.1088/0264-9381/16/6/328 | null | gr-qc hep-th | null | We consider scalar field theory on the RP^3 de Sitter spacetime (RP3dS),
which is locally isometric to de Sitter space (dS) but has spatial topology
RP^3. We compare the Euclidean vacua on RP3dS and dS in terms of three
quantities that are relevant for an inertial observer: (i) the stress-energy
tensor; (ii) the resp... | [
{
"created": "Wed, 16 Dec 1998 14:53:03 GMT",
"version": "v1"
},
{
"created": "Wed, 26 May 1999 08:58:38 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Louko",
"Jorma",
""
],
[
"Schleich",
"Kristin",
""
]
] | We consider scalar field theory on the RP^3 de Sitter spacetime (RP3dS), which is locally isometric to de Sitter space (dS) but has spatial topology RP^3. We compare the Euclidean vacua on RP3dS and dS in terms of three quantities that are relevant for an inertial observer: (i) the stress-energy tensor; (ii) the respon... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.