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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1512.01556 | Seth Hopper | Seth Hopper, Chris Kavanagh, Adrian C. Ottewill | Analytic self-force calculations in the post-Newtonian regime: eccentric
orbits on a Schwarzschild background | 20 pages, 2 figures, Updated with minor changes, mostly to references | Phys. Rev. D 93, 044010 (2016) | 10.1103/PhysRevD.93.044010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a method for solving the first-order field equations in a
post-Newtonian (PN) expansion. Our calculations generalize work of Bini and
Damour and subsequently Kavanagh et al., to consider eccentric orbits on a
Schwarzschild background. We derive expressions for the retarded metric
perturbation at the locati... | [
{
"created": "Fri, 4 Dec 2015 21:00:11 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Dec 2015 19:34:16 GMT",
"version": "v2"
}
] | 2016-02-10 | [
[
"Hopper",
"Seth",
""
],
[
"Kavanagh",
"Chris",
""
],
[
"Ottewill",
"Adrian C.",
""
]
] | We present a method for solving the first-order field equations in a post-Newtonian (PN) expansion. Our calculations generalize work of Bini and Damour and subsequently Kavanagh et al., to consider eccentric orbits on a Schwarzschild background. We derive expressions for the retarded metric perturbation at the location... |
0805.4268 | Rajeev Bhalerao | Budh Ram | Primordial matter density contrast and the size of the very early
universe in the Quantum Big Bang theory of the cosmological constant | 7 pages, no figs. v2: 8 pages, title changed, abstract and text
enlarged. Refs added | null | null | null | gr-qc astro-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the amount of primordial matter density contrast and the size of
the very early universe in the recent Quantum Big Bang theory [arXiv:0705.4549
[gr-qc](2007)] of the cosmological constant. We obtain $(\delta\rho/\rho)_M =
1.75 \times 10^{-5}$, {\it without} the introduction of an adjustable free
paramete... | [
{
"created": "Wed, 28 May 2008 06:53:49 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Nov 2009 11:09:26 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Ram",
"Budh",
""
]
] | We calculate the amount of primordial matter density contrast and the size of the very early universe in the recent Quantum Big Bang theory [arXiv:0705.4549 [gr-qc](2007)] of the cosmological constant. We obtain $(\delta\rho/\rho)_M = 1.75 \times 10^{-5}$, {\it without} the introduction of an adjustable free parameter.... |
1812.10115 | Ming Zhang | Ming Zhang, Wen-Biao Liu | Innermost stable circular orbits of charged spinning test particles | 6 pages | null | 10.1016/j.physletb.2018.12.051 | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | The effects of a paritcle's spin and electric charge on its angular momentum,
energy and radius on the innermost stable circular orbit are investigated based
on the particle's equations of motion in a background of the Kerr-Newmann
spacetime. It is found that the particle's angular momentum and energy have
monotonous... | [
{
"created": "Tue, 25 Dec 2018 15:01:50 GMT",
"version": "v1"
}
] | 2019-01-07 | [
[
"Zhang",
"Ming",
""
],
[
"Liu",
"Wen-Biao",
""
]
] | The effects of a paritcle's spin and electric charge on its angular momentum, energy and radius on the innermost stable circular orbit are investigated based on the particle's equations of motion in a background of the Kerr-Newmann spacetime. It is found that the particle's angular momentum and energy have monotonous r... |
1612.05625 | Ofek Birnholtz | Gregory Ashton, Ofek Birnholtz, Miriam Cabero, Collin Capano, Thomas
Dent, Badri Krishnan, Grant David Meadors, Alex B. Nielsen, Alex Nitz, Julian
Westerweck | Comments on: "Echoes from the abyss: Evidence for Planck-scale structure
at black hole horizons" | null | null | null | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Abedi, Dykaar and Afshordi claimed evidence for a repeating damped
echo signal following the binary black hole merger gravitational-wave events
recorded in the first observational period of the Advanced LIGO
interferometers. We discuss the methods of data analysis and significance
estimation leading to this... | [
{
"created": "Fri, 16 Dec 2016 20:43:59 GMT",
"version": "v1"
}
] | 2016-12-19 | [
[
"Ashton",
"Gregory",
""
],
[
"Birnholtz",
"Ofek",
""
],
[
"Cabero",
"Miriam",
""
],
[
"Capano",
"Collin",
""
],
[
"Dent",
"Thomas",
""
],
[
"Krishnan",
"Badri",
""
],
[
"Meadors",
"Grant David",
""
],
[... | Recently, Abedi, Dykaar and Afshordi claimed evidence for a repeating damped echo signal following the binary black hole merger gravitational-wave events recorded in the first observational period of the Advanced LIGO interferometers. We discuss the methods of data analysis and significance estimation leading to this c... |
1109.6247 | Luc Blanchet | Peter Wolf, Luc Blanchet, Christian J. Bord\'e, Serge Reynaud,
Christophe Salomon and Clande Cohen-Tannoudji | Atom interferometry and the Einstein equivalence principle | 5 pages, to appear in the proceedings of the "46th Rencontres de
Moriond and GPhyS Colloquium on Gravitational Waves and Experimental
Gravity", la Thuile, March 20-27, 2011 | Experimental Gravity and Gravitational Waves, (Th\'e Gioi, 2011)
p.327-331 | null | null | gr-qc physics.atom-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The computation of the phase shift in a symmetric atom interferometer in the
presence of a gravitational field is reviewed. The difference of action-phase
integrals between the two paths of the interferometer is zero for any
Lagrangian which is at most quadratic in position and velocity. We emphasize
that in a large ... | [
{
"created": "Wed, 28 Sep 2011 15:44:23 GMT",
"version": "v1"
}
] | 2014-09-16 | [
[
"Wolf",
"Peter",
""
],
[
"Blanchet",
"Luc",
""
],
[
"Bordé",
"Christian J.",
""
],
[
"Reynaud",
"Serge",
""
],
[
"Salomon",
"Christophe",
""
],
[
"Cohen-Tannoudji",
"Clande",
""
]
] | The computation of the phase shift in a symmetric atom interferometer in the presence of a gravitational field is reviewed. The difference of action-phase integrals between the two paths of the interferometer is zero for any Lagrangian which is at most quadratic in position and velocity. We emphasize that in a large cl... |
1702.08455 | Abdel Nasser Tawfik | A. Tawfik (Egyptian Ctr. Theor. Phys., Cairo, WLCAPP, Cairo) and E.
Abou El Dahab (Egyptian Ctr. Theor. Phys., Cairo, MUTI, Cairo) | FLRW Cosmology with Horava-Lifshitz Gravity: Impacts of Equations of
State | 20 pages, 3 figures, accepted for publication in Int. J. Theor. Phys | Int. J. Theor. Phys. 56, 2122-2139 (2017) | 10.1007/s10773-017-3355-1 | ECTP-2014-09, WLCAPP-2014-09 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspired by Lifshitz theory for quantum critical phenomena in condensed
matter, Horava proposed a theory for quantum gravity with an anisotropic
scaling in ultraviolet. In Horava-Lifshitz gravity (HLG), we have studied the
impacts of six types of equations of state on the evolution of various
cosmological parameters ... | [
{
"created": "Mon, 27 Feb 2017 17:41:50 GMT",
"version": "v1"
}
] | 2017-06-06 | [
[
"Tawfik",
"A.",
"",
"Egyptian Ctr. Theor. Phys., Cairo, WLCAPP, Cairo"
],
[
"Dahab",
"E. Abou El",
"",
"Egyptian Ctr. Theor. Phys., Cairo, MUTI, Cairo"
]
] | Inspired by Lifshitz theory for quantum critical phenomena in condensed matter, Horava proposed a theory for quantum gravity with an anisotropic scaling in ultraviolet. In Horava-Lifshitz gravity (HLG), we have studied the impacts of six types of equations of state on the evolution of various cosmological parameters su... |
1709.08099 | Dennis R\"atzel | Dennis R\"atzel, Ivette Fuentes | Testing small scale gravitational wave detectors with dynamical mass
distributions | 5 pages, 1 figure | null | null | null | gr-qc physics.ins-det quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recent discovery of gravitational waves by the LIGO-Virgo collaboration
created renewed interest in the investigation of alternative gravitational
detector designs, such as small scale resonant detectors. In this article, it
is shown how proposed small scale detectors can be tested by generating
dynamical gravita... | [
{
"created": "Sat, 23 Sep 2017 18:48:46 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Apr 2018 20:54:30 GMT",
"version": "v2"
}
] | 2018-05-02 | [
[
"Rätzel",
"Dennis",
""
],
[
"Fuentes",
"Ivette",
""
]
] | The recent discovery of gravitational waves by the LIGO-Virgo collaboration created renewed interest in the investigation of alternative gravitational detector designs, such as small scale resonant detectors. In this article, it is shown how proposed small scale detectors can be tested by generating dynamical gravitati... |
1908.04102 | Jibitesh Dutta | Binod Chetry, Jibitesh Dutta and Wompherdeiki Khyllep | Thermodynamics of scalar field models with kinetic corrections | 20 pages, 9 figures, Accepted in IJMPD | null | 10.1142/S0218271819501633 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work, we compare the thermodynamical viability of two types of
non-canonical scalar field models with kinetic corrections: the square kinetic
and square root kinetic corrections. In modern cosmology, the generalised
second law of thermodynamics (GSLT) plays an important role in deciding
thermodynamical... | [
{
"created": "Mon, 12 Aug 2019 11:54:12 GMT",
"version": "v1"
}
] | 2020-01-29 | [
[
"Chetry",
"Binod",
""
],
[
"Dutta",
"Jibitesh",
""
],
[
"Khyllep",
"Wompherdeiki",
""
]
] | In the present work, we compare the thermodynamical viability of two types of non-canonical scalar field models with kinetic corrections: the square kinetic and square root kinetic corrections. In modern cosmology, the generalised second law of thermodynamics (GSLT) plays an important role in deciding thermodynamical c... |
2010.03119 | Riccardo Sturani | Hebertt Leandro, Riccardo Sturani | A Gravitational non-Radiative Memory Effect | 13 pages, 1 figure. Appendix added in v2 with details of the
derivation of scalar potentials, as well as few references changed. Version
accepted for publication in GRG | null | 10.1007/s10714-021-02801-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the issue of memory effects, i.e. effects giving rise to a net
cumulative change of the configuration of test particles, using a toy model
describing the emission of radiation by a compact source and focusing on the
scalar, hence non-radiative, part of the Riemann curvature. Motivated by the
well known fac... | [
{
"created": "Wed, 7 Oct 2020 02:34:53 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Mar 2021 00:27:51 GMT",
"version": "v2"
}
] | 2021-03-10 | [
[
"Leandro",
"Hebertt",
""
],
[
"Sturani",
"Riccardo",
""
]
] | We revisit the issue of memory effects, i.e. effects giving rise to a net cumulative change of the configuration of test particles, using a toy model describing the emission of radiation by a compact source and focusing on the scalar, hence non-radiative, part of the Riemann curvature. Motivated by the well known fact ... |
gr-qc/0010032 | Brien C. Nolan | Brien C. Nolan (Dublin City University) | Sectors of spherical homothetic collapse | Now 40pp. plain latex including 11 of figures (using pstricks.tex).
Some proofs omitted for brevity (these are available in V1). To appear in
Classical and Quantum Gravity | Class.Quant.Grav. 18 (2001) 1651-1676 | 10.1088/0264-9381/18/9/304 | null | gr-qc | null | A study is undertaken of the gravitational collapse of spherically symmetric
thick shells admitting a homothetic Killing vector field under the assumption
that the energy momentum tensor corresponds to the absence of a pure outgoing
component of field. The energy-momentum tensor is not specified beyond this,
but is a... | [
{
"created": "Mon, 9 Oct 2000 16:52:42 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Mar 2001 14:43:35 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Nolan",
"Brien C.",
"",
"Dublin City University"
]
] | A study is undertaken of the gravitational collapse of spherically symmetric thick shells admitting a homothetic Killing vector field under the assumption that the energy momentum tensor corresponds to the absence of a pure outgoing component of field. The energy-momentum tensor is not specified beyond this, but is ass... |
2207.00435 | Gustavo Vicente dos Santos | Gustavo S. Vicente, Rudnei O. Ramos, Leila L. Graef | Gravitational Particle Production and the Validity of Effective
Descriptions in Loop Quantum Cosmology | Replaced with version matching the one published in the Physical
Review D | Physical Review D, Vol. 106, No. 4 (2022) | 10.1103/PhysRevD.106.043518 | null | gr-qc astro-ph.HE hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | The effective approach in Loop Quantum Cosmology (LQC) has provided means to
obtain predictions for observable quantities in LQC models. While an effective
dynamics in LQC has been extensively considered in different scenarios, a
robust demonstration of the validity of effective descriptions for the
perturbative leve... | [
{
"created": "Fri, 1 Jul 2022 13:55:47 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Jul 2022 22:10:55 GMT",
"version": "v2"
},
{
"created": "Wed, 13 Jul 2022 16:33:45 GMT",
"version": "v3"
},
{
"created": "Wed, 10 Aug 2022 14:55:52 GMT",
"version": "v4"
}
] | 2022-08-11 | [
[
"Vicente",
"Gustavo S.",
""
],
[
"Ramos",
"Rudnei O.",
""
],
[
"Graef",
"Leila L.",
""
]
] | The effective approach in Loop Quantum Cosmology (LQC) has provided means to obtain predictions for observable quantities in LQC models. While an effective dynamics in LQC has been extensively considered in different scenarios, a robust demonstration of the validity of effective descriptions for the perturbative level ... |
1806.10364 | Flavio Bombacigno | Giovanni Montani, Claudia Mantero, Flavio Bombacigno, Francesco
Cianfrani, Gabriele Barca | Semi-classical and quantum analysis of the isotropic Universe in the
polymer paradigm | 11 pages, 11 figures, Accepted for publication in Physical Review D | Phys. Rev. D 99, 063534 (2019) | 10.1103/PhysRevD.99.063534 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We analyse the semi-classical and quantum dynamics of the isotropic Universe
in the framework of the Polymer Quantum mechanics, in order to implement a
cut-off physics on the initial singularity. We first identify in the Universe
cubed scale factor (i.e. the spatial volume) the suitable configuration
variable, provid... | [
{
"created": "Wed, 27 Jun 2018 09:27:55 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Nov 2018 15:59:44 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Mar 2019 22:21:04 GMT",
"version": "v3"
}
] | 2019-03-29 | [
[
"Montani",
"Giovanni",
""
],
[
"Mantero",
"Claudia",
""
],
[
"Bombacigno",
"Flavio",
""
],
[
"Cianfrani",
"Francesco",
""
],
[
"Barca",
"Gabriele",
""
]
] | We analyse the semi-classical and quantum dynamics of the isotropic Universe in the framework of the Polymer Quantum mechanics, in order to implement a cut-off physics on the initial singularity. We first identify in the Universe cubed scale factor (i.e. the spatial volume) the suitable configuration variable, providin... |
gr-qc/9805097 | Soker Noam | Amso Harpaz and Noam Soker (Univ. of Haifa) | Radiation from a Uniformly Accelerated Charge | Latex, uses aasms4.sty, 14 pages, Accepted for publication in General
Relativity and Gravitation. For a postscript file please contact Noam Soker:
soker@physics.technion.ac.il | Gen.Rel.Grav. 30 (1998) 1217-1227 | 10.1023/A:1026646928717 | null | gr-qc | null | The emission of radiation by a uniformly accelerated charge is analyzed.
According to the standard approach, a radiation is observed whenever there is a
relative acceleraion between the charge and the observer. Analyzing
difficulties that arose in the standard approach, we propose that a radaition
is created whenever... | [
{
"created": "Thu, 28 May 1998 05:57:36 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Harpaz",
"Amso",
"",
"Univ. of Haifa"
],
[
"Soker",
"Noam",
"",
"Univ. of Haifa"
]
] | The emission of radiation by a uniformly accelerated charge is analyzed. According to the standard approach, a radiation is observed whenever there is a relative acceleraion between the charge and the observer. Analyzing difficulties that arose in the standard approach, we propose that a radaition is created whenever a... |
2107.02456 | Stefan Czimek | Stefanos Aretakis, Stefan Czimek, Igor Rodnianski | Characteristic gluing to the Kerr family and application to spacelike
gluing | 88 pages, 10 figures | null | null | null | gr-qc math-ph math.AP math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is the third paper in a series of papers adressing the characteristic
gluing problem for the Einstein vacuum equations. We provide full details of
our characteristic gluing (including the $10$ charges) of strongly
asymptotically flat data to the data of a suitably chosen Kerr spacetime. The
choice of the Kerr sp... | [
{
"created": "Tue, 6 Jul 2021 08:04:59 GMT",
"version": "v1"
}
] | 2021-07-07 | [
[
"Aretakis",
"Stefanos",
""
],
[
"Czimek",
"Stefan",
""
],
[
"Rodnianski",
"Igor",
""
]
] | This is the third paper in a series of papers adressing the characteristic gluing problem for the Einstein vacuum equations. We provide full details of our characteristic gluing (including the $10$ charges) of strongly asymptotically flat data to the data of a suitably chosen Kerr spacetime. The choice of the Kerr spac... |
gr-qc/0702049 | Fabien Besnard | Fabien Besnard (CPL) | Canonical quantization and the spectral action, a nice example | A footnote on p 10 added wrt published version | J.Geom.Phys.57:1757-1770,2007 | 10.1016/j.geomphys.2007.02.007 | null | gr-qc math.OA | null | We study the canonical quantization of the theory given by Chamseddine-Connes
spectral action on a particular finite spectral triple with algebra
$M_2(\Cset)\oplus\Cset$. We define a quantization of the natural distance
associated with this noncommutative space and show that the quantum distance
operator has a discre... | [
{
"created": "Thu, 8 Feb 2007 13:08:50 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Jun 2007 07:02:24 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Besnard",
"Fabien",
"",
"CPL"
]
] | We study the canonical quantization of the theory given by Chamseddine-Connes spectral action on a particular finite spectral triple with algebra $M_2(\Cset)\oplus\Cset$. We define a quantization of the natural distance associated with this noncommutative space and show that the quantum distance operator has a discrete... |
gr-qc/9506003 | Anzhong Wang | Anzhong Wang and Patricio S. Letelier | Dynamic wormholes and Energy Conditions | To appear in Prog. Theor. Phys | Prog.Theor.Phys.94:137-142,1995 | 10.1143/PTP.94.137 | null | gr-qc | null | A class of exact solutions of the Einstein field equations representing
non-static wormholes that obey the {\em weak and dominant energy conditions }
is presented. Hence, in principle, these wormholes can be built with less
exotic matter than the static ones.
| [
{
"created": "Wed, 31 May 1995 12:38:11 GMT",
"version": "v1"
}
] | 2009-07-07 | [
[
"Wang",
"Anzhong",
""
],
[
"Letelier",
"Patricio S.",
""
]
] | A class of exact solutions of the Einstein field equations representing non-static wormholes that obey the {\em weak and dominant energy conditions } is presented. Hence, in principle, these wormholes can be built with less exotic matter than the static ones. |
2307.12670 | Andrea Geralico | Donato Bini, Andrea Geralico, Piero Rettegno | Spin-orbit contribution to radiative losses for spinning binaries with
aligned spins | 10 pages, no figures, revtex macros; v2 minimal text modifications | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the leading order contribution to radiative losses in the case of
spinning binaries with aligned spins due to their spin-orbit interaction. The
orbital average along hyperboliclike orbits is taken through an appropriate
spin-orbit modification to the quasi-Keplerian parametrization for nonspinning
bodies, ... | [
{
"created": "Mon, 24 Jul 2023 10:20:09 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Sep 2023 14:07:33 GMT",
"version": "v2"
}
] | 2023-09-04 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Rettegno",
"Piero",
""
]
] | We compute the leading order contribution to radiative losses in the case of spinning binaries with aligned spins due to their spin-orbit interaction. The orbital average along hyperboliclike orbits is taken through an appropriate spin-orbit modification to the quasi-Keplerian parametrization for nonspinning bodies, wh... |
gr-qc/9901073 | Carlo Rovelli | Merced Montesinos, Carlo Rovelli and Thomas Thiemann | SL(2,R) model with two Hamiltonian constraints | 9 pages, 1 figure, revised version, to appear in Phys. Rev. D | Phys.Rev.D60:044009,1999 | 10.1103/PhysRevD.60.044009 | null | gr-qc hep-th quant-ph | null | We describe a simple dynamical model characterized by the presence of two
noncommuting Hamiltonian constraints. This feature mimics the constraint
structure of general relativity, where there is one Hamiltonian constraint
associated with each space point. We solve the classical and quantum dynamics
of the model, whic... | [
{
"created": "Tue, 26 Jan 1999 09:57:32 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Jul 1999 16:44:06 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Montesinos",
"Merced",
""
],
[
"Rovelli",
"Carlo",
""
],
[
"Thiemann",
"Thomas",
""
]
] | We describe a simple dynamical model characterized by the presence of two noncommuting Hamiltonian constraints. This feature mimics the constraint structure of general relativity, where there is one Hamiltonian constraint associated with each space point. We solve the classical and quantum dynamics of the model, which ... |
2112.11333 | Omar Mustafa | Omar Mustafa | PDM Klein-Gordon oscillators in cosmic string spacetime in magnetic and
Aharonov-Bohm flux fields within the Kaluza-Klein theory | 14 pages, 5 figures | Annals of Physics 440 (2022) 168857 | 10.1016/j.aop.2022.168857 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | In the cosmic string spacetime and within Kaluza-Klein theory (KKT)
backgrounds (indulging magnetic and Aharonov-Bohm flux fields), we introduce
and study position-dependent mass (PDM) Klein-Gordon (KG) oscillators. The
effective PDM is introduced as a deformation/defect in the momentum operator.
We show that there a... | [
{
"created": "Sat, 18 Dec 2021 17:39:42 GMT",
"version": "v1"
}
] | 2022-04-29 | [
[
"Mustafa",
"Omar",
""
]
] | In the cosmic string spacetime and within Kaluza-Klein theory (KKT) backgrounds (indulging magnetic and Aharonov-Bohm flux fields), we introduce and study position-dependent mass (PDM) Klein-Gordon (KG) oscillators. The effective PDM is introduced as a deformation/defect in the momentum operator. We show that there are... |
0710.5721 | Martin Bojowald | Martin Bojowald and Rupam Das | The radiation equation of state and loop quantum gravity corrections | 11 pages, 1 figure | Phys.Rev.D75:123521,2007 | 10.1103/PhysRevD.75.123521 | IGPG-07/6-3 | gr-qc astro-ph | null | The equation of state for radiation is derived in a canonical formulation of
the electromagnetic field. This allows one to include correction terms expected
from canonical quantum gravity and to infer implications to the universe
evolution in radiation dominated epochs. Corrections implied by quantum
geometry can be ... | [
{
"created": "Tue, 30 Oct 2007 18:09:56 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Bojowald",
"Martin",
""
],
[
"Das",
"Rupam",
""
]
] | The equation of state for radiation is derived in a canonical formulation of the electromagnetic field. This allows one to include correction terms expected from canonical quantum gravity and to infer implications to the universe evolution in radiation dominated epochs. Corrections implied by quantum geometry can be in... |
2012.08542 | Sumanta Chakraborty | Sumanta Chakraborty and T. Padmanabhan | Eddington gravity with matter: An emergent perspective | 20 pages, no figures | Phys. Rev. D 103, 064033 (2021) | 10.1103/PhysRevD.103.064033 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe an action principle, within the framework of the Eddington
gravity, which incorporates the matter fields in a simple manner.
Interestingly, the gravitational field equations derived from this action is
identical to the Einstein's equations, in contrast with the earlier attempts in
the literature. The cosm... | [
{
"created": "Tue, 15 Dec 2020 19:00:19 GMT",
"version": "v1"
}
] | 2021-03-24 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"Padmanabhan",
"T.",
""
]
] | We describe an action principle, within the framework of the Eddington gravity, which incorporates the matter fields in a simple manner. Interestingly, the gravitational field equations derived from this action is identical to the Einstein's equations, in contrast with the earlier attempts in the literature. The cosmol... |
2009.09833 | Bo Wang | Yi-Fu Cai, Chunshan Lin, Bo Wang, Sheng-Feng Yan | Sound speed resonance of the stochastic gravitational wave background | 6 pages, 2 figures | Phys. Rev. Lett. 126, 071303 (2021) | 10.1103/PhysRevLett.126.071303 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a novel mechanism to test time variation of the propagation speed
of gravitational waves (GWs) in light of GWs astronomy. As the stochastic GWs
experience the whole history of cosmic expansion, they encode potential
observational evidence of such variation. We report that, one feature of a
varying GWs spee... | [
{
"created": "Mon, 21 Sep 2020 13:11:52 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Sep 2020 13:30:30 GMT",
"version": "v2"
},
{
"created": "Sat, 20 Feb 2021 07:58:07 GMT",
"version": "v3"
}
] | 2021-02-23 | [
[
"Cai",
"Yi-Fu",
""
],
[
"Lin",
"Chunshan",
""
],
[
"Wang",
"Bo",
""
],
[
"Yan",
"Sheng-Feng",
""
]
] | We propose a novel mechanism to test time variation of the propagation speed of gravitational waves (GWs) in light of GWs astronomy. As the stochastic GWs experience the whole history of cosmic expansion, they encode potential observational evidence of such variation. We report that, one feature of a varying GWs speed ... |
1509.04665 | Kirill Bronnikov | K.A. Bronnikov, V.G. Krechet | Rotating cylindrical wormholes and energy conditions | 10 pages, no figures. Submitted to Proc. of the 9th Alexander
Friedmann International Seminar on Gravitation and Cosmology | Int. J. Mod. Phys. A 31, 1641022 (2016) | 10.1142/S0217751X16410220 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We seek wormholes among rotating cylindrically symmetric configurations in
general relativity. Exact wormhole solutions are presented with such sources of
gravity as a massless scalar field, a cosmological constant, and a scalar field
with an exponential potential. However, none of these solutions are
asymptotically ... | [
{
"created": "Tue, 15 Sep 2015 18:19:54 GMT",
"version": "v1"
}
] | 2016-03-30 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Krechet",
"V. G.",
""
]
] | We seek wormholes among rotating cylindrically symmetric configurations in general relativity. Exact wormhole solutions are presented with such sources of gravity as a massless scalar field, a cosmological constant, and a scalar field with an exponential potential. However, none of these solutions are asymptotically fl... |
1512.05192 | Behzad Eslam Panah | S. H. Hendi, S. Panahiyan, B. Eslam Panah and M. Momennia | Thermodynamic instability of nonlinearly charged black holes in
gravity's rainbow | 13 pages, 5 figures | Eur. Phys. J. C 76, 150 (2016) | 10.1140/epjc/s10052-016-3994-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the violation of Lorentz invariancy in quantum gravity, we study
black hole solutions in gravity's rainbow in context of Einstein gravity
coupled with various models of nonlinear electrodynamics. We regard an energy
dependent spacetime and obtain related metric functions and electric fields. We
show that... | [
{
"created": "Mon, 30 Nov 2015 14:10:04 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Mar 2016 16:25:39 GMT",
"version": "v2"
}
] | 2018-10-22 | [
[
"Hendi",
"S. H.",
""
],
[
"Panahiyan",
"S.",
""
],
[
"Panah",
"B. Eslam",
""
],
[
"Momennia",
"M.",
""
]
] | Motivated by the violation of Lorentz invariancy in quantum gravity, we study black hole solutions in gravity's rainbow in context of Einstein gravity coupled with various models of nonlinear electrodynamics. We regard an energy dependent spacetime and obtain related metric functions and electric fields. We show that t... |
2301.11364 | Konstantinos Pallikaris | Damianos Iosifidis and Konstantinos Pallikaris | Describing metric-affine theories anew: alternative frameworks, examples
and solutions | 35 pages, no figures | JCAP05(2023)037 | 10.1088/1475-7516/2023/05/037 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this work we describe metric-affine theories anew by making a change of
field variables. A series of equivalent frameworks is presented and
identifications are worked out in detail. The advantage of applying the new
frameworks is that any MAG theory can be handled as a Riemannian theory with
additional fields. We ... | [
{
"created": "Thu, 26 Jan 2023 19:18:58 GMT",
"version": "v1"
},
{
"created": "Sat, 20 May 2023 09:53:04 GMT",
"version": "v2"
}
] | 2023-05-23 | [
[
"Iosifidis",
"Damianos",
""
],
[
"Pallikaris",
"Konstantinos",
""
]
] | In this work we describe metric-affine theories anew by making a change of field variables. A series of equivalent frameworks is presented and identifications are worked out in detail. The advantage of applying the new frameworks is that any MAG theory can be handled as a Riemannian theory with additional fields. We st... |
2102.06063 | Nolene Naidu | Nolene F. Naidu, Robert S. Bogadi, Anand Kaisavelu and Megan Govender | Stability and Horizon Formation during Dissipative Collapse | 17 pages, 3 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We investigate the role played by density inhomogeneities and dissipation on
the final outcome of collapse of a self-gravitating sphere. By imposing a
perturbative scheme on the thermodynamical variables and gravitational
potentials we track the evolution of the collapse process starting off with an
initially static ... | [
{
"created": "Thu, 11 Feb 2021 15:09:52 GMT",
"version": "v1"
}
] | 2021-02-12 | [
[
"Naidu",
"Nolene F.",
""
],
[
"Bogadi",
"Robert S.",
""
],
[
"Kaisavelu",
"Anand",
""
],
[
"Govender",
"Megan",
""
]
] | We investigate the role played by density inhomogeneities and dissipation on the final outcome of collapse of a self-gravitating sphere. By imposing a perturbative scheme on the thermodynamical variables and gravitational potentials we track the evolution of the collapse process starting off with an initially static pe... |
1212.6661 | Michal Szczachor | A. Borowiec, J. Kowalski-Glikman and M. Szczachor | AdS-Maxwell Bf Theory As A Model Of Gravity And Bi-Gravity | 3 pages. Based on a talk given at the 13th Marcel Grossmann Meeting | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article presents an extended model of gravity obtained by gauging the
AdS-Mawell algebra. It involves additional fields that shift the spin
connection, leading effectively to theory of two independent connections.
Extension of algebraic structure by another tetrad gives rise to the model
described by a pair of E... | [
{
"created": "Sat, 29 Dec 2012 21:07:19 GMT",
"version": "v1"
}
] | 2013-01-01 | [
[
"Borowiec",
"A.",
""
],
[
"Kowalski-Glikman",
"J.",
""
],
[
"Szczachor",
"M.",
""
]
] | This article presents an extended model of gravity obtained by gauging the AdS-Mawell algebra. It involves additional fields that shift the spin connection, leading effectively to theory of two independent connections. Extension of algebraic structure by another tetrad gives rise to the model described by a pair of Ein... |
1104.5192 | Lorenzo Iorio | Lorenzo Iorio | Orbital effects of spatial variations of fundamental coupling constants | Latex2e, 20 pages, 1 figure, 7 tables. Version accepted by Monthly
Notices of the Royal Astronomical Society (MNRAS). Error in the caption of
Table 5 corrected. References updated | Mon.Not.Roy.Astron.Soc.417:2392--2400,2011 | 10.1111/j.1365-2966.2011.19421.x | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We deal with the effects induced on the orbit of a test particle revolving
around a central body by putative spatial variations of fundamental coupling
constants $\zeta$. In particular, we assume a dipole gradient for $\zeta(\bds
r)/\bar{\zeta}$ along a generic direction $\bds{\hat{k}}$ in space. We
analytically work... | [
{
"created": "Wed, 27 Apr 2011 17:09:17 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Apr 2011 17:17:47 GMT",
"version": "v2"
},
{
"created": "Sat, 30 Apr 2011 22:27:16 GMT",
"version": "v3"
},
{
"created": "Mon, 11 Jul 2011 16:16:54 GMT",
"version": "v4"
},
{
"c... | 2011-10-24 | [
[
"Iorio",
"Lorenzo",
""
]
] | We deal with the effects induced on the orbit of a test particle revolving around a central body by putative spatial variations of fundamental coupling constants $\zeta$. In particular, we assume a dipole gradient for $\zeta(\bds r)/\bar{\zeta}$ along a generic direction $\bds{\hat{k}}$ in space. We analytically work o... |
gr-qc/9803008 | Piotr Chrusciel | Piotr T. Chrusciel | GR15 Workshop A3 --- Mathematical Studies of Field Equations --- A
report | 25 pages, Latex | null | null | Tours preprint 162/98 | gr-qc | null | This is a report of the A3 workshop ("Mathematical Studies of Field
Equations"), which was held in Poone during the GR15 Conference in December
1997.
| [
{
"created": "Mon, 2 Mar 1998 12:35:33 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Chrusciel",
"Piotr T.",
""
]
] | This is a report of the A3 workshop ("Mathematical Studies of Field Equations"), which was held in Poone during the GR15 Conference in December 1997. |
2205.06052 | Anisur Rahaman | Sohan Kumar Jha, Anisur Rahaman | Gravitational lensing by the hairy Schwarzschild black hole | 13 pages with fig. and tables. arXiv admin note: text overlap with
arXiv:gr-qc/0208075, arXiv:1910.02030 by other authors | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this manuscript, we consider the hairy Schwarzschild black hole that
evades the no-hair theorem. The hair is induced by an additional source from
surroundings, such as dark matter, that has a constant energy-momentum
tensor(EMT). We study the strong gravitational lensing of light in the
background of the hairy Sch... | [
{
"created": "Thu, 12 May 2022 12:41:05 GMT",
"version": "v1"
}
] | 2022-05-13 | [
[
"Jha",
"Sohan Kumar",
""
],
[
"Rahaman",
"Anisur",
""
]
] | In this manuscript, we consider the hairy Schwarzschild black hole that evades the no-hair theorem. The hair is induced by an additional source from surroundings, such as dark matter, that has a constant energy-momentum tensor(EMT). We study the strong gravitational lensing of light in the background of the hairy Schwa... |
2011.03932 | Naoki Tsukamoto | Naoki Tsukamoto | Gravitational lensing in the Simpson-Visser black-bounce spacetime in a
strong deflection limit | 13 pages, 6 figures, minor correction, references added, accepted for
publication in Physical Review D | Phys. Rev. D 103, 024033 (2021) | 10.1103/PhysRevD.103.024033 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Simpson-Visser spacetime has two nonnegative parameters $a$ and $m$ and its
metric is correspond with (i) a Schwarzschild metric for $a=0$ and $m\neq0$,
(ii) a regular black hole metric for $a<2m$, (iii) a one-way traversable
wormhole metric for $a=2m$, (vi) a two-way traversable wormhole metric for
$a>2m$, and (v)... | [
{
"created": "Sun, 8 Nov 2020 09:14:04 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Jan 2021 04:44:29 GMT",
"version": "v2"
}
] | 2021-01-27 | [
[
"Tsukamoto",
"Naoki",
""
]
] | A Simpson-Visser spacetime has two nonnegative parameters $a$ and $m$ and its metric is correspond with (i) a Schwarzschild metric for $a=0$ and $m\neq0$, (ii) a regular black hole metric for $a<2m$, (iii) a one-way traversable wormhole metric for $a=2m$, (vi) a two-way traversable wormhole metric for $a>2m$, and (v) a... |
2110.05546 | Marco Antonelli | Lorenzo Gavassino, Marco Antonelli, Brynmor Haskell | Extending Israel and Stewart hydrodynamics to relativistic superfluids
via Carter's multifluid approach | 34 pages, 1 figure | Phys. Rev. D 105, 045011 - February 2022 | 10.1103/PhysRevD.105.045011 | null | gr-qc astro-ph.HE nucl-th physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a relativistic model for bulk viscosity and heat conduction in a
superfluid. Building on the principles of Unified Extended Irreversible
Thermodynamics, the model is derived from Carter's multifluid approach for a
theory with 3 four-currents: particles, entropy, and quasi-particles.
Dissipation arises di... | [
{
"created": "Mon, 11 Oct 2021 18:31:57 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Feb 2022 15:26:44 GMT",
"version": "v2"
}
] | 2022-02-23 | [
[
"Gavassino",
"Lorenzo",
""
],
[
"Antonelli",
"Marco",
""
],
[
"Haskell",
"Brynmor",
""
]
] | We construct a relativistic model for bulk viscosity and heat conduction in a superfluid. Building on the principles of Unified Extended Irreversible Thermodynamics, the model is derived from Carter's multifluid approach for a theory with 3 four-currents: particles, entropy, and quasi-particles. Dissipation arises dire... |
1907.00683 | Badri Krishnan | Daniel Pook-Kolb, Ofek Birnholtz, Badri Krishnan and Erik Schnetter | Self-intersecting marginally outer trapped surfaces | 17 pages, 13 figures | Phys. Rev. D 100, 084044 (2019) | 10.1103/PhysRevD.100.084044 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have shown previously that a merger of marginally outer trapped surfaces
(MOTSs) occurs in a binary black hole merger and that there is a continuous
sequence of MOTSs which connects the initial two black holes to the final one.
In this paper, we confirm this scenario numerically and we detail further
improvements ... | [
{
"created": "Mon, 1 Jul 2019 12:10:21 GMT",
"version": "v1"
}
] | 2019-10-23 | [
[
"Pook-Kolb",
"Daniel",
""
],
[
"Birnholtz",
"Ofek",
""
],
[
"Krishnan",
"Badri",
""
],
[
"Schnetter",
"Erik",
""
]
] | We have shown previously that a merger of marginally outer trapped surfaces (MOTSs) occurs in a binary black hole merger and that there is a continuous sequence of MOTSs which connects the initial two black holes to the final one. In this paper, we confirm this scenario numerically and we detail further improvements in... |
2204.12405 | Oleg Zaslavskii | O. B. Zaslavskii | Confined Penrose process and black-hole bomb | 16 pages. Presentation improved and slightly expanded, typos
corrected. Matches published version | Phys. Rev. D 106, 024037 (2022) | 10.1103/PhysRevD.106.024037 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider the decay of a particle with some energy $E_{0}>0$ inside the
ergosphere of a black hole. After the first decay one of particles with the
energy $E_{1}<0$ falls towards a black hole while the second one with $%
E_{2}>E_{0}\,\ $moves in the outward direction. It bounces back from a
reflecting shell and, af... | [
{
"created": "Tue, 26 Apr 2022 16:02:27 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Jul 2022 09:05:35 GMT",
"version": "v2"
}
] | 2022-08-31 | [
[
"Zaslavskii",
"O. B.",
""
]
] | We consider the decay of a particle with some energy $E_{0}>0$ inside the ergosphere of a black hole. After the first decay one of particles with the energy $E_{1}<0$ falls towards a black hole while the second one with $% E_{2}>E_{0}\,\ $moves in the outward direction. It bounces back from a reflecting shell and, afte... |
1301.7201 | Maksym Teslyk | Maksym Teslyk and Olena Teslyk | Scalar field entanglement entropy for small Schwarzschild black hole | 10 pages | Class. Quantum Grav. 30 (2013) 125013 | 10.1088/0264-9381/30/12/125013 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider scalar field entanglement entropy generated with black hole of
(sub)planck mass scale thus implying the unitary evolution of gravity. The
dependence on the dimension of the Hilbert space for degrees of freedom located
behind the horizon is taken into account. The obtained results contain
polylogarithmic t... | [
{
"created": "Wed, 30 Jan 2013 11:26:52 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Feb 2013 15:04:12 GMT",
"version": "v2"
},
{
"created": "Mon, 8 Apr 2013 11:40:14 GMT",
"version": "v3"
}
] | 2013-05-20 | [
[
"Teslyk",
"Maksym",
""
],
[
"Teslyk",
"Olena",
""
]
] | We consider scalar field entanglement entropy generated with black hole of (sub)planck mass scale thus implying the unitary evolution of gravity. The dependence on the dimension of the Hilbert space for degrees of freedom located behind the horizon is taken into account. The obtained results contain polylogarithmic ter... |
2011.03571 | Aasim Jan | A. Z. Jan (1), A. B. Yelikar (1), J. Lange (2 and 1) and R.
O'Shaughnessy (1) ((1) Rochester Institute of Technology, (2) Brown
University) | Assessing and marginalizing over compact binary coalescence waveform
systematics with RIFT | 8 pages, 7 figures | Phys. Rev. D 102, 124069 (2020) | 10.1103/PhysRevD.102.124069 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As Einstein's equations for binary compact object inspiral have only been
approximately or intermittently solved by analytic or numerical methods, the
models used to infer parameters of gravitational wave (GW) sources are subject
to waveform modeling uncertainty. Using a simple scenario, we illustrate these
differenc... | [
{
"created": "Fri, 6 Nov 2020 19:47:34 GMT",
"version": "v1"
}
] | 2021-01-04 | [
[
"Jan",
"A. Z.",
"",
"2 and 1"
],
[
"Yelikar",
"A. B.",
"",
"2 and 1"
],
[
"Lange",
"J.",
"",
"2 and 1"
],
[
"O'Shaughnessy",
"R.",
""
]
] | As Einstein's equations for binary compact object inspiral have only been approximately or intermittently solved by analytic or numerical methods, the models used to infer parameters of gravitational wave (GW) sources are subject to waveform modeling uncertainty. Using a simple scenario, we illustrate these differences... |
gr-qc/9710138 | Luis Lehner | R. Gomez, L. Lehner, R.L. Marsa and J. Winicour | Moving Black Holes in 3D | 11 pages + 6 figures | Phys.Rev. D57 (1998) 4778-4788 | 10.1103/PhysRevD.57.4778 | null | gr-qc | null | We model a radiating, moving black hole in terms of a worldtube-nullcone
boundary value problem. We evolve this data in the region interior to the
worldtube but exterior to a trapped surface by means of a characteristic
evolution based upon a family of ingoing null hypersurfaces. Data on the
worldtube is induced from... | [
{
"created": "Fri, 31 Oct 1997 19:40:55 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Gomez",
"R.",
""
],
[
"Lehner",
"L.",
""
],
[
"Marsa",
"R. L.",
""
],
[
"Winicour",
"J.",
""
]
] | We model a radiating, moving black hole in terms of a worldtube-nullcone boundary value problem. We evolve this data in the region interior to the worldtube but exterior to a trapped surface by means of a characteristic evolution based upon a family of ingoing null hypersurfaces. Data on the worldtube is induced from a... |
1702.02694 | Florian Beyer | Florian Beyer, Leon Escobar, J\"org Frauendiener | Criticality of inhomogeneous Nariai-like cosmological models | 34 pages, 17 figures | Phys. Rev. D 95, 084030 (2017) | 10.1103/PhysRevD.95.084030 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we construct and study solutions of Einstein's equations in
vacuum with a positive cosmological constant which can be considered as
inhomogeneous generalizations of the Nariai cosmological model. Similar to this
Nariai spacetime, our solutions are at the borderline between gravitational
collapse and de... | [
{
"created": "Thu, 9 Feb 2017 03:58:24 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Apr 2017 23:21:07 GMT",
"version": "v2"
}
] | 2017-07-12 | [
[
"Beyer",
"Florian",
""
],
[
"Escobar",
"Leon",
""
],
[
"Frauendiener",
"Jörg",
""
]
] | In this paper, we construct and study solutions of Einstein's equations in vacuum with a positive cosmological constant which can be considered as inhomogeneous generalizations of the Nariai cosmological model. Similar to this Nariai spacetime, our solutions are at the borderline between gravitational collapse and de-S... |
2408.03217 | Adriano Rocha Soares | A. R. Soares, R. L. L. Vit\'oria, C. F. S. Pereira | Topologically Charged Holonomy corrected Schwarzschild black hole
lensing | arXiv admin note: text overlap with arXiv:2309.05106 | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we theoretically investigate the deflection of light produced
by a topologically charged Holonomy corrected Schwarzschild black hole. The
study is carried out both in the weak field limit and in the strong field
limit. We analytically deduced the expansions for light deflection in the two
limits and, f... | [
{
"created": "Tue, 6 Aug 2024 14:23:53 GMT",
"version": "v1"
}
] | 2024-08-07 | [
[
"Soares",
"A. R.",
""
],
[
"Vitória",
"R. L. L.",
""
],
[
"Pereira",
"C. F. S.",
""
]
] | In this paper, we theoretically investigate the deflection of light produced by a topologically charged Holonomy corrected Schwarzschild black hole. The study is carried out both in the weak field limit and in the strong field limit. We analytically deduced the expansions for light deflection in the two limits and, fro... |
gr-qc/0201089 | Artem Starodubtsev | Artem Starodubtsev | String theory in a vertex operator representation: a simple model for
testing loop quantum gravity | 23 pages 5 figures | null | null | null | gr-qc hep-th | null | The loop quantum gravity technique is applied to the free bosonic string. A
Hilbert space similar to loop space in loop quantum gravity as well as
representations of diffeomorphism and hamiltonian constraints on it are
constructed. The string in this representation can be viewed as a set of
interacting relativistic p... | [
{
"created": "Mon, 28 Jan 2002 22:41:22 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Starodubtsev",
"Artem",
""
]
] | The loop quantum gravity technique is applied to the free bosonic string. A Hilbert space similar to loop space in loop quantum gravity as well as representations of diffeomorphism and hamiltonian constraints on it are constructed. The string in this representation can be viewed as a set of interacting relativistic par... |
1301.2077 | Alessandro Fabbri | Roberto Balbinot, Alessandro Fabbri and Carlos Mayoral | Hawking effect in BECs acoustic white holes | 29 pages, 32 figures | null | null | null | gr-qc cond-mat.quant-gas hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bogoliubov pseudoparticle creation in a BEC undergoing a WH like flow is
investigated analytically in the case of a one dimensional geometry with
stepwise homogeneous regions. Comparison of the results with those
corresponding to a BH flow is performed. The implications for the analogous
gravitational problem is disc... | [
{
"created": "Thu, 10 Jan 2013 10:40:56 GMT",
"version": "v1"
}
] | 2013-01-11 | [
[
"Balbinot",
"Roberto",
""
],
[
"Fabbri",
"Alessandro",
""
],
[
"Mayoral",
"Carlos",
""
]
] | Bogoliubov pseudoparticle creation in a BEC undergoing a WH like flow is investigated analytically in the case of a one dimensional geometry with stepwise homogeneous regions. Comparison of the results with those corresponding to a BH flow is performed. The implications for the analogous gravitational problem is discus... |
1912.09750 | Alejandro Perez | Lautaro Amadei, Hongguang Liu, Alejandro Perez | Unitarity and information in quantum gravity: a simple example | null | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In approaches to quantum gravity, where smooth spacetime is an emergent
approximation of a discrete Planckian fundamental structure, any effective
smooth field theoretical description would miss part of the fundamental degrees
of freedom and thus break unitarity. This is applicable also to trivial
gravitational field... | [
{
"created": "Fri, 20 Dec 2019 10:47:39 GMT",
"version": "v1"
}
] | 2019-12-23 | [
[
"Amadei",
"Lautaro",
""
],
[
"Liu",
"Hongguang",
""
],
[
"Perez",
"Alejandro",
""
]
] | In approaches to quantum gravity, where smooth spacetime is an emergent approximation of a discrete Planckian fundamental structure, any effective smooth field theoretical description would miss part of the fundamental degrees of freedom and thus break unitarity. This is applicable also to trivial gravitational field (... |
0906.4191 | Valery Kiselev | V.V. Kiselev, S.A. Timofeev | Decoupling of Higgs boson from the inflationary stage of Universe
evolution | 6 pages, svjour class, comments and reference added | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The constraint on the mass of Higgs field in the Standard Model at the
minimal interaction with the gravity is derived in the form of lower bound
$m_H> 150$ GeV by the strict requirement of decoupling the Higgs boson from the
inflation of early Universe: the inflation produced by the Higgs scalar could
crucially dest... | [
{
"created": "Tue, 23 Jun 2009 08:45:35 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Jul 2009 11:46:38 GMT",
"version": "v2"
},
{
"created": "Fri, 31 Jul 2009 08:05:02 GMT",
"version": "v3"
},
{
"created": "Mon, 24 Aug 2009 11:36:52 GMT",
"version": "v4"
},
{
"cr... | 2010-05-10 | [
[
"Kiselev",
"V. V.",
""
],
[
"Timofeev",
"S. A.",
""
]
] | The constraint on the mass of Higgs field in the Standard Model at the minimal interaction with the gravity is derived in the form of lower bound $m_H> 150$ GeV by the strict requirement of decoupling the Higgs boson from the inflation of early Universe: the inflation produced by the Higgs scalar could crucially destro... |
gr-qc/0007017 | Pawel Nurowski | Pawe{\l}~Nurowski, Jerzy F. Pleba\'nski | Non-vacuum twisting type N metrics | null | Class.Quant.Grav. 18 (2001) 341-351 | null | null | gr-qc | null | A maximally reduced system of equations corresponding to the twisting type N
Einstein metrics is given. When the cosmological constant $\lambda\to 0$ they
reduce to the standard equations for the vacuum twisting type N's. All the
metrics which are conformally equivalent to the twisting type N metrics and
which admit ... | [
{
"created": "Mon, 10 Jul 2000 15:45:11 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Paweł~Nurowski",
"",
""
],
[
"Plebański",
"Jerzy F.",
""
]
] | A maximally reduced system of equations corresponding to the twisting type N Einstein metrics is given. When the cosmological constant $\lambda\to 0$ they reduce to the standard equations for the vacuum twisting type N's. All the metrics which are conformally equivalent to the twisting type N metrics and which admit 3-... |
1902.04411 | Ali \"Ovg\"un Dr. | A. \"Ovg\"un | Weak gravitational lensing of regular black holes with cosmic strings
using the Gauss-Bonnet theorem | Accepted for publication in Physical Review D
(https://journals.aps.org/prd/accepted/05075Qd6Pc511124453d5b89128d261ab2470a01f) | Phys. Rev. D 99, 104075 (2019) | 10.1103/PhysRevD.99.104075 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate light bending in the spacetime of regular black
holes with cosmic strings in weak field limits. To do so, we apply the
Gauss-Bonnet theorem to the optical geometry of the black hole; and, using the
Gibbons-Werner method, we obtain the deflection angle of light in the weak
field limits wh... | [
{
"created": "Sun, 10 Feb 2019 01:57:04 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Mar 2019 14:13:51 GMT",
"version": "v2"
},
{
"created": "Wed, 15 May 2019 06:37:56 GMT",
"version": "v3"
}
] | 2019-05-29 | [
[
"Övgün",
"A.",
""
]
] | In this paper, we investigate light bending in the spacetime of regular black holes with cosmic strings in weak field limits. To do so, we apply the Gauss-Bonnet theorem to the optical geometry of the black hole; and, using the Gibbons-Werner method, we obtain the deflection angle of light in the weak field limits whic... |
1604.00782 | Roland Haas | Roland Haas, Christian D. Ott, Bela Szilagyi, Jeffrey D. Kaplan, Jonas
Lippuner, Mark A. Scheel, Kevin Barkett, Curran D. Muhlberger, Tim Dietrich,
Matthew D. Duez, Francois Foucart, Harald P. Pfeiffer, Lawrence E. Kidder,
Saul A. Teukolsky | Simulations of inspiraling and merging double neutron stars using the
Spectral Einstein Code | 23 pages, 15 figures, published version | Phys. Rev. D 93, 124062 (2016) | 10.1103/PhysRevD.93.124062 | YITP-16-39 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present results on the inspiral, merger, and post-merger evolution of a
neutron star - neutron star (NSNS) system. Our results are obtained using the
hybrid pseudospectral-finite volume Spectral Einstein Code (SpEC). To test our
numerical methods, we evolve an equal-mass system for $\approx 22$ orbits
before merge... | [
{
"created": "Mon, 4 Apr 2016 09:22:40 GMT",
"version": "v1"
},
{
"created": "Sat, 25 Jun 2016 18:55:01 GMT",
"version": "v2"
}
] | 2016-06-29 | [
[
"Haas",
"Roland",
""
],
[
"Ott",
"Christian D.",
""
],
[
"Szilagyi",
"Bela",
""
],
[
"Kaplan",
"Jeffrey D.",
""
],
[
"Lippuner",
"Jonas",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Barkett",
"Kevin",
""
],
[... | We present results on the inspiral, merger, and post-merger evolution of a neutron star - neutron star (NSNS) system. Our results are obtained using the hybrid pseudospectral-finite volume Spectral Einstein Code (SpEC). To test our numerical methods, we evolve an equal-mass system for $\approx 22$ orbits before merger.... |
1311.3146 | Remo Garattini | Remo Garattini | Self Sustained Traversable Wormholes and Topology Change Induced by
Gravity's Rainbow | 6 pages. Prepared for the Proceedings of the Karl Schwarzschild
meeting 2013 | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the effects of Gravity's Rainbow on the self-sustained equation
which is responsible to find new traversable wormholes configurations which are
sustained by their own gravitational quantum fluctuations. The same
self-sustained equation is also used to discover if topology change is
possible. In this contr... | [
{
"created": "Wed, 13 Nov 2013 14:41:21 GMT",
"version": "v1"
}
] | 2013-11-14 | [
[
"Garattini",
"Remo",
""
]
] | We consider the effects of Gravity's Rainbow on the self-sustained equation which is responsible to find new traversable wormholes configurations which are sustained by their own gravitational quantum fluctuations. The same self-sustained equation is also used to discover if topology change is possible. In this contrib... |
2012.02240 | J\"org Hennig | J\"org Hennig and Rodrigo Panosso Macedo | Fully pseudospectral solution of the conformally invariant wave equation
on a Kerr background | 31 pages, 14 figures | Class. Quantum Grav. 38, 135006 (2021) | 10.1088/1361-6382/abfd86 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study axisymmetric solution to the conformally invariant wave equation on
a Kerr background by means of numerical and analytical methods. Our main focus
is on the behaviour of the solutions near spacelike infinity, which is
appropriately represented as a cylinder. Earlier studies of the wave equation
on a Schwarzs... | [
{
"created": "Thu, 3 Dec 2020 20:12:03 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Jun 2021 21:03:20 GMT",
"version": "v2"
}
] | 2021-06-07 | [
[
"Hennig",
"Jörg",
""
],
[
"Macedo",
"Rodrigo Panosso",
""
]
] | We study axisymmetric solution to the conformally invariant wave equation on a Kerr background by means of numerical and analytical methods. Our main focus is on the behaviour of the solutions near spacelike infinity, which is appropriately represented as a cylinder. Earlier studies of the wave equation on a Schwarzsch... |
1208.3388 | Frank Hellmann | Benjamin Bahr, Bianca Dittrich, Frank Hellmann, Wojciech Kaminski | Holonomy Spin Foam Models: Definition and Coarse Graining | 36 pages, 12 figures | null | 10.1103/PhysRevD.87.044048 | null | gr-qc hep-lat hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new holonomy formulation for spin foams, which naturally extends
the theory space of lattice gauge theories. This allows current spin foam
models to be defined on arbitrary two-complexes as well as to generalize
current spin foam models to arbitrary, in particular finite groups. The
similarity with stand... | [
{
"created": "Thu, 16 Aug 2012 14:55:08 GMT",
"version": "v1"
}
] | 2013-03-14 | [
[
"Bahr",
"Benjamin",
""
],
[
"Dittrich",
"Bianca",
""
],
[
"Hellmann",
"Frank",
""
],
[
"Kaminski",
"Wojciech",
""
]
] | We propose a new holonomy formulation for spin foams, which naturally extends the theory space of lattice gauge theories. This allows current spin foam models to be defined on arbitrary two-complexes as well as to generalize current spin foam models to arbitrary, in particular finite groups. The similarity with standar... |
2310.02017 | Reed Essick | Reed Essick, Maya Fishbach | DAGnabbit! Ensuring Consistency between Noise and Detection in
Hierarchical Bayesian Inference | 12 pages (+8 pages of appendix). 6 Figures | null | null | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hierarchical Bayesian inference can simultaneously account for both
measurement uncertainty and selection effects within astronomical catalogs. In
particular, the hierarchy imposed encodes beliefs about the interdependence of
the physical processes that generate the observed data. We show that several
proposed approx... | [
{
"created": "Tue, 3 Oct 2023 12:46:07 GMT",
"version": "v1"
}
] | 2023-10-04 | [
[
"Essick",
"Reed",
""
],
[
"Fishbach",
"Maya",
""
]
] | Hierarchical Bayesian inference can simultaneously account for both measurement uncertainty and selection effects within astronomical catalogs. In particular, the hierarchy imposed encodes beliefs about the interdependence of the physical processes that generate the observed data. We show that several proposed approxim... |
gr-qc/0609064 | Celine Cattoen | Celine Cattoen, Matt Visser | Cosmological milestones and energy conditions | 8 pages, 1 table, conference proceedings for NEB XII conference in
Nafplio, Greece | J.Phys.Conf.Ser.68:012011,2007 | 10.1088/1742-6596/68/1/012011 | null | gr-qc | null | Until recently, the physically relevant singularities occurring in FRW
cosmologies had traditionally been thought to be limited to the "big bang", and
possibly a "big crunch". However, over the last few years, the zoo of
cosmological singularities considered in the literature has become considerably
more extensive, w... | [
{
"created": "Mon, 18 Sep 2006 03:31:01 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Cattoen",
"Celine",
""
],
[
"Visser",
"Matt",
""
]
] | Until recently, the physically relevant singularities occurring in FRW cosmologies had traditionally been thought to be limited to the "big bang", and possibly a "big crunch". However, over the last few years, the zoo of cosmological singularities considered in the literature has become considerably more extensive, wit... |
gr-qc/9610058 | Eric Poisson | L.E. Simone, S.W. Leonard, E. Poisson, and C.M. Will | Gravitational waves from binary systems in circular orbits: Does the
post-Newtonian expansion converge? | 20 pages, IOP macros, 4 postscript figures, to appear in Classical
and Quantum Gravity | Class.Quant.Grav. 14 (1997) 237-256 | 10.1088/0264-9381/14/1/021 | null | gr-qc | null | Gravitational radiation can be expressed in terms of an infinite series of
radiative, symmetric trace-free (STF) multipole moments which can be connected
to the behavior of the source. We consider a truncated model for gravitational
radiation from binary systems in which each STF mass and current moment of
order l is... | [
{
"created": "Fri, 25 Oct 1996 00:45:51 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Simone",
"L. E.",
""
],
[
"Leonard",
"S. W.",
""
],
[
"Poisson",
"E.",
""
],
[
"Will",
"C. M.",
""
]
] | Gravitational radiation can be expressed in terms of an infinite series of radiative, symmetric trace-free (STF) multipole moments which can be connected to the behavior of the source. We consider a truncated model for gravitational radiation from binary systems in which each STF mass and current moment of order l is g... |
2007.13192 | Ludovico Machet | Ludovico Machet, Jinzhao Wang | On the continuum limit of Benincasa-Dowker-Glaser causal set action | 26 pages (including cover page), 2 figures. We expect an independent
work on the same topic by Fay Dowker to be submitted to the ArXiv at the same
time of this work. Cross reference to this work added in version 2 | 2021 Class. Quantum Grav. 38 015010 | 10.1088/1361-6382/abc274 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the continuum limit of the Benincasa-Dowker-Glaser causal set action
on a causally convex compact region. In particular, we compute the action of a
causal set randomly sprinkled on a small causal diamond in the presence of
arbitrary curvature in various spacetime dimensions. In the continuum limit, we
show t... | [
{
"created": "Sun, 26 Jul 2020 18:09:30 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Jul 2020 09:57:13 GMT",
"version": "v2"
}
] | 2020-12-14 | [
[
"Machet",
"Ludovico",
""
],
[
"Wang",
"Jinzhao",
""
]
] | We study the continuum limit of the Benincasa-Dowker-Glaser causal set action on a causally convex compact region. In particular, we compute the action of a causal set randomly sprinkled on a small causal diamond in the presence of arbitrary curvature in various spacetime dimensions. In the continuum limit, we show tha... |
gr-qc/9505036 | Shingo Suzuki | Y.Sota, S.Suzuki and K.Maeda | Chaos in Static Axisymmetric Spacetimes I : Vacuum Case | More comments for the quantitative estimation of chaos are added, and
some inappropriate terms are changed. This will appear on Class. Quant. Grav | Class.Quant.Grav. 13 (1996) 1241-1260 | 10.1088/0264-9381/13/5/034 | null | gr-qc astro-ph chao-dyn nlin.CD | null | We study the motion of test particle in static axisymmetric vacuum spacetimes
and discuss two criteria for strong chaos to occur: (1) a local instability
measured by the Weyl curvature, and (2) a tangle of a homoclinic orbit, which
is closely related to an unstable periodic orbit in general relativity. We
analyze sev... | [
{
"created": "Sat, 20 May 1995 05:55:20 GMT",
"version": "v1"
},
{
"created": "Mon, 22 May 1995 07:26:30 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Feb 1996 23:12:31 GMT",
"version": "v3"
}
] | 2009-10-28 | [
[
"Sota",
"Y.",
""
],
[
"Suzuki",
"S.",
""
],
[
"Maeda",
"K.",
""
]
] | We study the motion of test particle in static axisymmetric vacuum spacetimes and discuss two criteria for strong chaos to occur: (1) a local instability measured by the Weyl curvature, and (2) a tangle of a homoclinic orbit, which is closely related to an unstable periodic orbit in general relativity. We analyze sever... |
2001.05500 | William C. C. Lima | Atsushi Higuchi, William C. C. Lima | Equivalence between the in-in perturbation theories for quantum fields
in Minkowski spacetime and in the Rindler wedge | 12 pages, 3 figures. Minor corrections; matches the published version | Phys. Rev. D 101, 065009 (2020) | 10.1103/PhysRevD.101.065009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the relation between the time-ordered vacuum correlation
functions for interacting real scalar fields in Minkowski spacetime and in the
Rindler wedge. The correlation functions are constructed perturbatively within
the in-in formalism, often employed in calculations in more general spacetimes.
We prove... | [
{
"created": "Wed, 15 Jan 2020 19:00:01 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Mar 2020 13:59:35 GMT",
"version": "v2"
}
] | 2020-03-18 | [
[
"Higuchi",
"Atsushi",
""
],
[
"Lima",
"William C. C.",
""
]
] | We investigate the relation between the time-ordered vacuum correlation functions for interacting real scalar fields in Minkowski spacetime and in the Rindler wedge. The correlation functions are constructed perturbatively within the in-in formalism, often employed in calculations in more general spacetimes. We prove t... |
1009.1506 | Ming-Hua Li | Zhe Chang, Ming-Hua Li, and Xin Li | Unification of Dark Matter and Dark Energy in a Modified Entropic Force
Model | 23 pages, 6 figures | Commun.Theor.Phys. 56: 184-192,2011 | 10.1088/0253-6102/56/1/32 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/3.0/ | In Verlinde's entropic force scenario of gravity, Newton's laws and Einstein
equations can be obtained from the first pinciples and general assumptions.
However, the equipartition law of energy is invalid at very low temperatures.
We show clearly that the threshold of the equipartition law of energy is
related with h... | [
{
"created": "Wed, 8 Sep 2010 11:31:21 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Oct 2010 09:12:57 GMT",
"version": "v2"
},
{
"created": "Mon, 27 Jun 2011 06:36:33 GMT",
"version": "v3"
}
] | 2011-08-04 | [
[
"Chang",
"Zhe",
""
],
[
"Li",
"Ming-Hua",
""
],
[
"Li",
"Xin",
""
]
] | In Verlinde's entropic force scenario of gravity, Newton's laws and Einstein equations can be obtained from the first pinciples and general assumptions. However, the equipartition law of energy is invalid at very low temperatures. We show clearly that the threshold of the equipartition law of energy is related with hor... |
1405.3640 | Mauricio Bellini | Mariano Anabitarte, Mauricio Bellini (IFIMAR - CONICET & UNMDP) | Inflation as a White Hole explosion from a 5D vacuum | improved version | null | 10.1139/cjp-2014-0588 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a new kind of 5D Ricci-flat canonical metric, we obtain by a static
foliation an effective 4D Schwarzschild-de Sitter hypersurface. We examine some
particular initial conditions which could be responsible for the inflationary
expansion of the early universe, which could be driven by the explosion of a
White Hol... | [
{
"created": "Wed, 14 May 2014 19:41:14 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Aug 2014 14:21:41 GMT",
"version": "v2"
}
] | 2023-07-19 | [
[
"Anabitarte",
"Mariano",
"",
"IFIMAR - CONICET & UNMDP"
],
[
"Bellini",
"Mauricio",
"",
"IFIMAR - CONICET & UNMDP"
]
] | Using a new kind of 5D Ricci-flat canonical metric, we obtain by a static foliation an effective 4D Schwarzschild-de Sitter hypersurface. We examine some particular initial conditions which could be responsible for the inflationary expansion of the early universe, which could be driven by the explosion of a White Hole ... |
2004.09296 | Z. Yousaf | M. Z. Bhatti, Z. Yousaf, A. Rehman | Gravastars in $f(R,G)$ Gravity | 21 pages, 4 figures | Phys. Dark Universe 29, 100561 (2020) | 10.1016/j.dark.2020.100561 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we discuss some feasible features of gravastar that were
firstly demonstrated by Mazur and Mottola. It is already established that
gravastar associates the de-Sitter spacetime in its inner sector with the
Schwarzschild geometry at its exterior through the thin shell possessing the
ultra-relativistic ma... | [
{
"created": "Fri, 17 Apr 2020 12:45:35 GMT",
"version": "v1"
}
] | 2020-05-05 | [
[
"Bhatti",
"M. Z.",
""
],
[
"Yousaf",
"Z.",
""
],
[
"Rehman",
"A.",
""
]
] | In this paper, we discuss some feasible features of gravastar that were firstly demonstrated by Mazur and Mottola. It is already established that gravastar associates the de-Sitter spacetime in its inner sector with the Schwarzschild geometry at its exterior through the thin shell possessing the ultra-relativistic matt... |
gr-qc/0606014 | Diego Pavon | German Izquierdo and Diego Pavon | The generalized second law in phantom dominated universes in the
presence of black holes | 8 pages, one eps figure, to be published by Physics Letters B | Phys.Lett.B639:1-4,2006 | 10.1016/j.physletb.2006.05.082 | null | gr-qc astro-ph hep-ph hep-th | null | This Letter considers the generalized second law of gravitational
thermodynamics in two scenarios featuring a phantom dominated expansion plus a
black hole. The law is violated in both scenarios.
| [
{
"created": "Fri, 2 Jun 2006 13:17:12 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Izquierdo",
"German",
""
],
[
"Pavon",
"Diego",
""
]
] | This Letter considers the generalized second law of gravitational thermodynamics in two scenarios featuring a phantom dominated expansion plus a black hole. The law is violated in both scenarios. |
2407.17528 | Chia-Li Hsieh | Chia-Li Hsieh | Interacting Null Sources in Different Geometries | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We introduce basic mathematical techniques, followed by an exploration of
three distinct topics: the Callan-Giddings-Harvey-Strominger (CGHS) model in
1+1-dimensional spacetime, the formation of astrophysical jets in
Schwarzschild-like black holes, and collisions and confinement phenomena in the
third-order Lovelock ... | [
{
"created": "Tue, 23 Jul 2024 17:31:01 GMT",
"version": "v1"
}
] | 2024-07-26 | [
[
"Hsieh",
"Chia-Li",
""
]
] | We introduce basic mathematical techniques, followed by an exploration of three distinct topics: the Callan-Giddings-Harvey-Strominger (CGHS) model in 1+1-dimensional spacetime, the formation of astrophysical jets in Schwarzschild-like black holes, and collisions and confinement phenomena in the third-order Lovelock gr... |
1702.04687 | Luca Fabbri | Luca Fabbri | A geometrical assessment of spinorial energy conditions | 4 pages | Eur.Phys.J.Plus132:156(2017) | 10.1140/epjp/i2017-11444-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the problem of energy for spinor fields coupled to their
surrounding curved-twisted space-time, and we show that when treated
geometrically we cannot even be certain that there is a problem for the energy
in the first place.
| [
{
"created": "Wed, 15 Feb 2017 17:13:14 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Apr 2017 09:01:50 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Dec 2017 23:44:04 GMT",
"version": "v3"
}
] | 2018-01-04 | [
[
"Fabbri",
"Luca",
""
]
] | We consider the problem of energy for spinor fields coupled to their surrounding curved-twisted space-time, and we show that when treated geometrically we cannot even be certain that there is a problem for the energy in the first place. |
gr-qc/0004058 | Masayasu Hosonuma | Yasufumi Kojima and Masayasu Hosonuma | Approximate equation relevant to axial oscillations on slowly rotating
relativistic stars | 13pages, no figures, accepted for publication in Physical Review D | Phys.Rev. D62 (2000) 044006 | 10.1103/PhysRevD.62.044006 | null | gr-qc astro-ph | null | Axial oscillations relevant to the r-mode instability are studied with slow
rotation formalism in general relativity. The approximate equation governing
the oscillations is derived with second-order rotational corrections. The
equation contains an effective 'viscosity-like' term, which originates from
coupling to the... | [
{
"created": "Tue, 18 Apr 2000 12:13:28 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Kojima",
"Yasufumi",
""
],
[
"Hosonuma",
"Masayasu",
""
]
] | Axial oscillations relevant to the r-mode instability are studied with slow rotation formalism in general relativity. The approximate equation governing the oscillations is derived with second-order rotational corrections. The equation contains an effective 'viscosity-like' term, which originates from coupling to the p... |
2204.04885 | Natalia Konobeeva | M.B. Belonenko and N.N. Konobeeva | Zitterbewegung of Klein-Gordon particles and Landau levels | 5 pages, 3 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we consider the Zitterbewegung (ZB) effect for Klein-Gordon
particles induced by a cosmic string, near which curvature effects play a
dominant role. An analytical expression for the current is obtained and
analyzed.
| [
{
"created": "Mon, 11 Apr 2022 06:06:51 GMT",
"version": "v1"
}
] | 2022-04-12 | [
[
"Belonenko",
"M. B.",
""
],
[
"Konobeeva",
"N. N.",
""
]
] | In this paper, we consider the Zitterbewegung (ZB) effect for Klein-Gordon particles induced by a cosmic string, near which curvature effects play a dominant role. An analytical expression for the current is obtained and analyzed. |
2107.02536 | Anil Yadav dr | Nishant Singla, M. K. Gupta, Anil Kumar Yadav, G. K. Goswami | Accelerating Universe with binary mixture of bulk viscous fluid and dark
energy | 10 Pages, 7 Figures, Accepted in Int. J. Mod. Phys. A | International Journal of Modern Physics A 36, 2150148 (2021) | 10.1142/S0217751X21501487 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have proposed a model of accelerating Universe with binary
mixture of bulk viscous fluid and dark energy. and probed the model parameters:
present values of Hubble's constant $H_{0}$, Equation of state paper of dark
energy $\omega_{de}$ and density parameter of dark energy $(\Omega_{de})_{0}$
with r... | [
{
"created": "Tue, 6 Jul 2021 11:03:28 GMT",
"version": "v1"
}
] | 2021-08-18 | [
[
"Singla",
"Nishant",
""
],
[
"Gupta",
"M. K.",
""
],
[
"Yadav",
"Anil Kumar",
""
],
[
"Goswami",
"G. K.",
""
]
] | In this paper, we have proposed a model of accelerating Universe with binary mixture of bulk viscous fluid and dark energy. and probed the model parameters: present values of Hubble's constant $H_{0}$, Equation of state paper of dark energy $\omega_{de}$ and density parameter of dark energy $(\Omega_{de})_{0}$ with rec... |
0705.0232 | Kotub Uddin | Kotub Uddin, James E Lidsey and Reza Tavakol | Cosmological perturbations in Palatini modified gravity | null | Class.Quant.Grav.24:3951-3962,2007 | 10.1088/0264-9381/24/15/012 | null | gr-qc astro-ph | null | Two approaches to the study of cosmological density perturbations in modified
theories of Palatini gravity have recently been discussed. These utilise,
respectively, a generalisation of Birkhoff's theorem and a direct linearization
of the gravitational field equations. In this paper these approaches are
compared and ... | [
{
"created": "Wed, 2 May 2007 09:10:33 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Jul 2007 13:07:56 GMT",
"version": "v2"
}
] | 2010-10-27 | [
[
"Uddin",
"Kotub",
""
],
[
"Lidsey",
"James E",
""
],
[
"Tavakol",
"Reza",
""
]
] | Two approaches to the study of cosmological density perturbations in modified theories of Palatini gravity have recently been discussed. These utilise, respectively, a generalisation of Birkhoff's theorem and a direct linearization of the gravitational field equations. In this paper these approaches are compared and co... |
gr-qc/0604109 | Fangyu Li | Fangyu Li, R. M. L. Baker, Jr., and Zhenya Chen | Perturbative photon flux generated by high-frequency relic gravitational
waves and utilization of them for their detection | 26 pages, 4 figures, 3 tables. submitted to Classical and Quantum
Gravity | null | null | null | gr-qc | null | There exist corresponding metric perturbations of the relic gravitational
waves (GWs) in the region of approximately h~10^(-30)-10^(-32)in the GHz band.
A detector for these GWs is described in which we measure the perturbative
photon flux (PPF) or signal generated by such high-frequency relic GWs (HFRGWs)
via a coup... | [
{
"created": "Wed, 26 Apr 2006 03:17:02 GMT",
"version": "v1"
}
] | 2012-08-27 | [
[
"Li",
"Fangyu",
""
],
[
"Baker,",
"R. M. L.",
"Jr."
],
[
"Chen",
"Zhenya",
""
]
] | There exist corresponding metric perturbations of the relic gravitational waves (GWs) in the region of approximately h~10^(-30)-10^(-32)in the GHz band. A detector for these GWs is described in which we measure the perturbative photon flux (PPF) or signal generated by such high-frequency relic GWs (HFRGWs) via a coupli... |
2408.05018 | Sanjay Siwach | Bijendra Kumar Vishvakarma, Shubham Kala and Sanjay Siwach | Strong Gravitational Lensing by Bardeen Black Hole in Cloud of Strings | 20 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the gravitational lensing by Bardeen black hole in cloud of
strings (CoS) in strong field limit. The effect of CoS parameter $b$ has been
outlined in comparison with Bardeen black hole lens. The impact parameter
increases as we increase the CoS parameter consequently more photons approach
towards lens.... | [
{
"created": "Fri, 9 Aug 2024 12:12:55 GMT",
"version": "v1"
}
] | 2024-08-12 | [
[
"Vishvakarma",
"Bijendra Kumar",
""
],
[
"Kala",
"Shubham",
""
],
[
"Siwach",
"Sanjay",
""
]
] | We investigate the gravitational lensing by Bardeen black hole in cloud of strings (CoS) in strong field limit. The effect of CoS parameter $b$ has been outlined in comparison with Bardeen black hole lens. The impact parameter increases as we increase the CoS parameter consequently more photons approach towards lens. W... |
gr-qc/0608136 | Rituparno Goswami | Rituparno Goswami and Pankaj S Joshi | Spherical gravitational collapse in N-dimensions | Revtex4, The replaced version matches the published one | Phys.Rev.D76:084026,2007 | 10.1103/PhysRevD.76.084026 | null | gr-qc | null | We investigate here spherically symmetric gravitational collapse in a
spacetime with an arbitrary number of dimensions and with a general {\it type
I} matter field, which is a broad class that includes most of the physically
reasonable matter forms. We show that given the initial data for matter in
terms of the initi... | [
{
"created": "Wed, 30 Aug 2006 22:16:17 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Jan 2008 12:34:12 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Goswami",
"Rituparno",
""
],
[
"Joshi",
"Pankaj S",
""
]
] | We investigate here spherically symmetric gravitational collapse in a spacetime with an arbitrary number of dimensions and with a general {\it type I} matter field, which is a broad class that includes most of the physically reasonable matter forms. We show that given the initial data for matter in terms of the initial... |
1509.05693 | Ivan Agullo | Ivan Agullo and Noah A. Morris | Detailed analysis of the predictions of loop quantum cosmology for the
primordial power spectra | 24 pages, 5 figures | Phys. Rev. D 92, 124040 (2015) | 10.1103/PhysRevD.92.124040 | LSU-REL-091815 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide an exhaustive numerical exploration of the predictions of loop
quantum cosmology (LQC) with a post-bounce phase of inflation for the
primordial power spectrum of scalar and tensor perturbations. We extend
previous analysis by characterizing the phenomenologically relevant parameter
space and by constrainin... | [
{
"created": "Fri, 18 Sep 2015 16:38:55 GMT",
"version": "v1"
}
] | 2015-12-30 | [
[
"Agullo",
"Ivan",
""
],
[
"Morris",
"Noah A.",
""
]
] | We provide an exhaustive numerical exploration of the predictions of loop quantum cosmology (LQC) with a post-bounce phase of inflation for the primordial power spectrum of scalar and tensor perturbations. We extend previous analysis by characterizing the phenomenologically relevant parameter space and by constraining ... |
gr-qc/9211021 | null | M.Gasperini and M.Giovannini | Dilaton Contributions to the Cosmic Gravitational Wave Background | 26 pages, plain tex (to appear in Phys.Rev.D, 1 fig available from
the authors upon req.) | Phys.Rev. D47 (1993) 1519-1528 | 10.1103/PhysRevD.47.1519 | DFTT-58/92 | gr-qc hep-th | null | We consider the cosmological amplification of a metric perturbation
propagating in a higher-dimensional Brans-Dicke background, including a non
trivial dilaton evolution. We discuss the properties of the spectral energy
density of the produced gravitons (as well as of the associated squeezing
parameter), and we show ... | [
{
"created": "Tue, 17 Nov 1992 21:57:00 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Gasperini",
"M.",
""
],
[
"Giovannini",
"M.",
""
]
] | We consider the cosmological amplification of a metric perturbation propagating in a higher-dimensional Brans-Dicke background, including a non trivial dilaton evolution. We discuss the properties of the spectral energy density of the produced gravitons (as well as of the associated squeezing parameter), and we show th... |
1001.0079 | Bin Wang | Jian-Hua He, Bin Wang, Elcio Abdalla, Diego Pavon | The imprint of the interaction between dark sectors in galaxy clusters | revised version. New treatment has been provided on studying the
structure formation in the spherical collapsing system where DE does not
cluster together with DM. Accepted for publication in JCAP | JCAP 1012:022,2010 | 10.1088/1475-7516/2010/12/022 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on perturbation theory, we study the dynamics of how dark matter and
dark energy in the collapsing system approach dynamical equilibrium while
interacting. We find that the interaction between dark sectors cannot ensure
the dark energy to fully cluster along with dark, leading to the energy
non-conservation pro... | [
{
"created": "Thu, 31 Dec 2009 03:38:30 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Dec 2010 10:26:27 GMT",
"version": "v2"
}
] | 2015-03-13 | [
[
"He",
"Jian-Hua",
""
],
[
"Wang",
"Bin",
""
],
[
"Abdalla",
"Elcio",
""
],
[
"Pavon",
"Diego",
""
]
] | Based on perturbation theory, we study the dynamics of how dark matter and dark energy in the collapsing system approach dynamical equilibrium while interacting. We find that the interaction between dark sectors cannot ensure the dark energy to fully cluster along with dark, leading to the energy non-conservation probl... |
2011.00805 | Zhi-Bang Yao | Zhi-Bang Yao, Michele Oliosi, Xian Gao, Shinji Mukohyama | Minimally modified gravity with an auxiliary constraint: a Hamiltonian
construction | 11 pages | Phys. Rev. D 103, 024032 (2021) | 10.1103/PhysRevD.103.024032 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Working directly with a general Hamiltonian for the spacetime metric with the
$3+1$ decomposition and keeping only the spatial covariance, we investigate the
possibility of reducing the number of degrees of freedom by introducing an
auxiliary constraint. The auxiliary constraint is considered as part of the
definitio... | [
{
"created": "Mon, 2 Nov 2020 08:11:22 GMT",
"version": "v1"
}
] | 2021-01-20 | [
[
"Yao",
"Zhi-Bang",
""
],
[
"Oliosi",
"Michele",
""
],
[
"Gao",
"Xian",
""
],
[
"Mukohyama",
"Shinji",
""
]
] | Working directly with a general Hamiltonian for the spacetime metric with the $3+1$ decomposition and keeping only the spatial covariance, we investigate the possibility of reducing the number of degrees of freedom by introducing an auxiliary constraint. The auxiliary constraint is considered as part of the definition ... |
0710.3823 | Ulrich Sperhake | U. Sperhake, E. Berti, V. Cardoso, J. A. Gonzalez, B. Bruegmann and M.
Ansorg | Eccentric binary black-hole mergers: The transition from inspiral to
plunge in general relativity | Added sequence of long inspirals to the study. To match published
version | Phys.Rev.D78:064069,2008 | 10.1103/PhysRevD.78.064069 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the transition from inspiral to plunge in general relativity by
computing gravitational waveforms of non-spinning, equal-mass black-hole
binaries. We consider three sequences of simulations, starting with a
quasi-circular inspiral completing 1.5, 2.3 and 9.6 orbits, respectively, prior
to coalescence of the ... | [
{
"created": "Sun, 21 Oct 2007 04:15:29 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Sep 2008 23:40:49 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Sperhake",
"U.",
""
],
[
"Berti",
"E.",
""
],
[
"Cardoso",
"V.",
""
],
[
"Gonzalez",
"J. A.",
""
],
[
"Bruegmann",
"B.",
""
],
[
"Ansorg",
"M.",
""
]
] | We study the transition from inspiral to plunge in general relativity by computing gravitational waveforms of non-spinning, equal-mass black-hole binaries. We consider three sequences of simulations, starting with a quasi-circular inspiral completing 1.5, 2.3 and 9.6 orbits, respectively, prior to coalescence of the ho... |
2002.07918 | Anuradha Samajdar | Anuradha Samajdar and Tim Dietrich | Constructing Love-Q-Relations with Gravitational Wave Detections | 5 pages, 3 figures | Phys. Rev. D 101, 124014 (2020) | 10.1103/PhysRevD.101.124014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quasi-universal relations connecting the tidal deformability and the
quadrupole moment of individual neutron stars are predicted by theoretical
computations, but have not been measured experimentally. However, such
relations are employed during the interpretation of gravitational waves and,
therefore, have a direct i... | [
{
"created": "Tue, 18 Feb 2020 23:10:03 GMT",
"version": "v1"
}
] | 2020-07-01 | [
[
"Samajdar",
"Anuradha",
""
],
[
"Dietrich",
"Tim",
""
]
] | Quasi-universal relations connecting the tidal deformability and the quadrupole moment of individual neutron stars are predicted by theoretical computations, but have not been measured experimentally. However, such relations are employed during the interpretation of gravitational waves and, therefore, have a direct imp... |
1610.08225 | Hedvika Kadlecova | Hedvika Kadlecov\'a and Pavel Krtou\v{s} | The gyraton solutions on generalized Melvin universe with cosmological
constant | 16 pages, 7 figures, Workshop proceeding RAGtime 2010-14 on black
holes and neutron stars | Workshops on black holes and neutron stars 2008/2009/2010/2011
Silesian University in Opava, 2014, pp. 61-74 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present and analyze new exact gyraton solutions of algebraic type II on
generalized Melvin universe of type D which admit non-vanishing cosmological
constant $\Lambda$. We show that it generalizes both, gyraton solutions on
Melvin and on direct product spacetimes. When we set $\Lambda = 0$ we get
solutions on Melv... | [
{
"created": "Wed, 26 Oct 2016 08:23:28 GMT",
"version": "v1"
}
] | 2016-10-27 | [
[
"Kadlecová",
"Hedvika",
""
],
[
"Krtouš",
"Pavel",
""
]
] | We present and analyze new exact gyraton solutions of algebraic type II on generalized Melvin universe of type D which admit non-vanishing cosmological constant $\Lambda$. We show that it generalizes both, gyraton solutions on Melvin and on direct product spacetimes. When we set $\Lambda = 0$ we get solutions on Melvin... |
2004.10772 | Adrien Kuntz | Adrien Kuntz, Riccardo Penco and Federico Piazza | Extreme Mass Ratio Inspirals with Scalar Hair | 37 pages; version accepted for publication in JCAP | null | 10.1088/1475-7516/2020/08/023 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Stellar mass objects orbiting around supermassive black holes are primary
targets for future gravitational wave detectors like LISA. However, in theories
beyond general relativity, the corresponding waveform templates are still
relatively poorly known. We propose a universal description for these systems
which applie... | [
{
"created": "Wed, 22 Apr 2020 18:01:02 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Sep 2020 07:07:58 GMT",
"version": "v2"
}
] | 2020-09-16 | [
[
"Kuntz",
"Adrien",
""
],
[
"Penco",
"Riccardo",
""
],
[
"Piazza",
"Federico",
""
]
] | Stellar mass objects orbiting around supermassive black holes are primary targets for future gravitational wave detectors like LISA. However, in theories beyond general relativity, the corresponding waveform templates are still relatively poorly known. We propose a universal description for these systems which applies ... |
0707.3073 | Belinch\'on Jos\'e Antonio | Jos\'e Antonio Belinch\'on | About Bianchi I with time varying constants | 30 pages. Revtex4 | Gravitation and Cosmology, 15, 306-316. (2009) | null | null | gr-qc | null | In this paper we study how to attack through different techniques a perfect
fluid Bianchi I model with variable G, and $\Lambda.$ These tactics are: Lie
groups method (LM), imposing a particular symmetry, self-similarity (SS),
matter collineations (MC). and kinematical self-similarity (KSS). We compare
both tactics s... | [
{
"created": "Fri, 20 Jul 2007 13:55:11 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jul 2007 13:37:02 GMT",
"version": "v2"
}
] | 2009-10-12 | [
[
"Belinchón",
"José Antonio",
""
]
] | In this paper we study how to attack through different techniques a perfect fluid Bianchi I model with variable G, and $\Lambda.$ These tactics are: Lie groups method (LM), imposing a particular symmetry, self-similarity (SS), matter collineations (MC). and kinematical self-similarity (KSS). We compare both tactics sin... |
2308.03501 | Georgios Antoniou | Georgios Antoniou | New perspectives on scalar fields in strong gravity | 132 pages, Ph.D. thesis | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent developments in the field of gravitational physics, including the
emergence of gravitational wave astronomy, black hole images, and more accurate
telescopes, have allowed us to probe the strong-field character of gravity in a
novel and revolutionary manner. This accessibility related to strong gravity
brings i... | [
{
"created": "Mon, 7 Aug 2023 11:53:47 GMT",
"version": "v1"
}
] | 2023-08-08 | [
[
"Antoniou",
"Georgios",
""
]
] | Recent developments in the field of gravitational physics, including the emergence of gravitational wave astronomy, black hole images, and more accurate telescopes, have allowed us to probe the strong-field character of gravity in a novel and revolutionary manner. This accessibility related to strong gravity brings int... |
gr-qc/9511069 | {\O}ystein Lund B{\o} | B.L.Altshuler, A.M.Boyarsky and A.Yu.Neronov | The Problem of Classical Limit in Quantum Cosmology: The effective
action language | 16 pages, Latex, Report at the seminar ``Quantum Gravity. In Memory
of Academician Moisei Markov'', Moscow, June 12-19, 1995. To be published in
World Scientific | Int.J.Mod.Phys. D5 (1996) 869-884 | 10.1142/S0218271896000527 | null | gr-qc | null | The tool of functional averaging over some ``large'' diffeomorphisms is used
to describe quantum systems with constraints, in particular quantum cosmology,
in the language of quantum Effective Action. Simple toy models demonstrate a
supposedly general phenomenon: the presence of a constraint results in
``quantum repe... | [
{
"created": "Mon, 27 Nov 1995 09:26:02 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Altshuler",
"B. L.",
""
],
[
"Boyarsky",
"A. M.",
""
],
[
"Neronov",
"A. Yu.",
""
]
] | The tool of functional averaging over some ``large'' diffeomorphisms is used to describe quantum systems with constraints, in particular quantum cosmology, in the language of quantum Effective Action. Simple toy models demonstrate a supposedly general phenomenon: the presence of a constraint results in ``quantum repel'... |
1408.5253 | Andrea Geralico | Donato Bini and Andrea Geralico | Observer-dependent tidal indicators in the Kerr spacetime | 15 pages, 4 figures. Note that there is a misprint in Eq. (4.5) of
the published version: the plus sign in front of the last term in the sum (at
the beginning of the last line) should be a minus sign. The resulting Eq.
(4.6) should be corrected too. However, these misprinted equations are only a
re-writing of p... | Class. Quantum Grav. 29, 055005 (2012) | 10.1088/0264-9381/29/5/055005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The observer-dependent tidal effects associated with the electric and
magnetic parts of the Riemann tensor with respect to an arbitrary family of
observers are discussed in a general spacetime in terms of certain "tidal
indicators." The features of such indicators are then explored by specializing
our considerations ... | [
{
"created": "Fri, 22 Aug 2014 10:34:23 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
]
] | The observer-dependent tidal effects associated with the electric and magnetic parts of the Riemann tensor with respect to an arbitrary family of observers are discussed in a general spacetime in terms of certain "tidal indicators." The features of such indicators are then explored by specializing our considerations to... |
1711.05514 | Ohkyung Kwon | Craig Hogan and Ohkyung Kwon | Models of Exotic Interferometer Cross-Correlations in Emergent
Space-Time | 26 pages, 14 figures. This is an author-created, un-copyedited
version of an article published in Classical and Quantum Gravity. IOP
Publishing Ltd is not responsible for any errors or omissions in this version
of the manuscript or any version derived from it. The Version of Record is
available online at the DO... | Class. Quantum Grav. 35 204001 (2018) -- Focus Issue on Gravity in
the Lab | 10.1088/1361-6382/aadea4 | FERMILAB-PUB-17-481-A | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Lorentz invariant framework is developed to model the cross spectrum of two
interferometers in a space-time that emerges from a Planck scale quantum system
with exact causal symmetry and holographic spacelike rotational correlations.
Space-time relationships between world lines are generated by entanglement of
geom... | [
{
"created": "Wed, 15 Nov 2017 12:14:09 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Nov 2017 03:12:48 GMT",
"version": "v2"
},
{
"created": "Tue, 28 Nov 2017 16:25:54 GMT",
"version": "v3"
},
{
"created": "Sun, 17 Dec 2017 07:57:17 GMT",
"version": "v4"
},
{
"c... | 2018-09-21 | [
[
"Hogan",
"Craig",
""
],
[
"Kwon",
"Ohkyung",
""
]
] | A Lorentz invariant framework is developed to model the cross spectrum of two interferometers in a space-time that emerges from a Planck scale quantum system with exact causal symmetry and holographic spacelike rotational correlations. Space-time relationships between world lines are generated by entanglement of geomet... |
gr-qc/0402078 | Suresh Paingalil Kunjan | K. K. Venkataratnam and P. K. Suresh | Particle Production of Coherently Oscillating Nonclassical Inflaton in
FRW Universe | 15 pages, 1 figure, to appear in IJMPD | Int.J.Mod.Phys. D13 (2004) 239-252 | 10.1142/S0218271804004578 | null | gr-qc | null | We study particle production of coherently oscillating inflaton in the
semiclassical theory of gravity by representing inflaton in coherent and
squeezed state formalisms. A comparative study of the inflaton in classical
gravity with coherent state inflaton in semiclassical gravity is also
presented.
| [
{
"created": "Wed, 18 Feb 2004 06:29:08 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Venkataratnam",
"K. K.",
""
],
[
"Suresh",
"P. K.",
""
]
] | We study particle production of coherently oscillating inflaton in the semiclassical theory of gravity by representing inflaton in coherent and squeezed state formalisms. A comparative study of the inflaton in classical gravity with coherent state inflaton in semiclassical gravity is also presented. |
2203.08831 | Carlos O. Lousto | Carlos O. Lousto and James Healy | Study of the Intermediate Mass Ratio Black Hole Binary Merger up to
1000:1 with Numerical Relativity | 7 pages, 5 figures, 2 tables | null | 10.1088/1361-6382/acc7ef | null | gr-qc astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explicitly demonstrate that current numerical relativity techniques are
able to accurately evolve black hole binaries with mass ratios of the order of
1000:1. This proof of principle is relevant for future third generation (3G)
gravitational wave detectors and space mission LISA, as by purely numerical
methods we ... | [
{
"created": "Wed, 16 Mar 2022 18:00:01 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Sep 2022 12:30:53 GMT",
"version": "v2"
},
{
"created": "Fri, 24 Mar 2023 20:11:32 GMT",
"version": "v3"
}
] | 2023-04-19 | [
[
"Lousto",
"Carlos O.",
""
],
[
"Healy",
"James",
""
]
] | We explicitly demonstrate that current numerical relativity techniques are able to accurately evolve black hole binaries with mass ratios of the order of 1000:1. This proof of principle is relevant for future third generation (3G) gravitational wave detectors and space mission LISA, as by purely numerical methods we wo... |
1811.12283 | Ram Brustein | Ram Brustein, A.J.M. Medved, K. Yagi | Lower limit on the entropy of black holes as inferred from gravitational
wave observations | Corrected error in estimation of current bounds on the entropy.
Improved discussion of energy stored in echoes, V3 replaced to match
published version, clarifications and explanations added | Phys. Rev. D 100, 104009 (2019) | 10.1103/PhysRevD.100.104009 | CERN-TH-2018-261 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole (BH) thermodynamics was established by Bekenstein and Hawking, who
made abstract theoretical arguments about the second law of thermodynamics and
quantum theory in curved spacetime respectively. Testing these ideas
experimentally has, so far, been impractical because the putative flux of
Hawking radiation ... | [
{
"created": "Thu, 29 Nov 2018 16:16:10 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Mar 2019 21:16:38 GMT",
"version": "v2"
},
{
"created": "Sat, 2 Nov 2019 08:03:59 GMT",
"version": "v3"
}
] | 2019-11-13 | [
[
"Brustein",
"Ram",
""
],
[
"Medved",
"A. J. M.",
""
],
[
"Yagi",
"K.",
""
]
] | Black hole (BH) thermodynamics was established by Bekenstein and Hawking, who made abstract theoretical arguments about the second law of thermodynamics and quantum theory in curved spacetime respectively. Testing these ideas experimentally has, so far, been impractical because the putative flux of Hawking radiation fr... |
gr-qc/0412081 | Ivan L. Zhogin | I.L.Zhogin | Absolute Parallelism: Spherical Symmetry and Singularities | v.2: 7 pages, in Latex; a bit expanded version, with more detailed
derivations and explanations; typos corrected; v.3: minor corrections, one
reference is added [quite a number of mistypes, e.g. in eqs (5),(9),(15)] | Sov.Phys.J. 34 (1992) 781 | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Observing the list of compatible second order equations of Absolute
Parallelism (AP) found by Einstein and Mayer (they used D=4), we choose the
one-parameter class of equations which take on a 3-linear form (when
contra-frame density of some weight is in use). Spherically symmetric solutions
to these equations are co... | [
{
"created": "Fri, 17 Dec 2004 09:34:21 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Jul 2022 14:22:12 GMT",
"version": "v2"
},
{
"created": "Sun, 21 Aug 2022 20:55:30 GMT",
"version": "v3"
}
] | 2022-09-08 | [
[
"Zhogin",
"I. L.",
""
]
] | Observing the list of compatible second order equations of Absolute Parallelism (AP) found by Einstein and Mayer (they used D=4), we choose the one-parameter class of equations which take on a 3-linear form (when contra-frame density of some weight is in use). Spherically symmetric solutions to these equations are cons... |
gr-qc/9910113 | Kenji Sakamoto | Kenji Sakamoto, Kiyoshi Shiraishi (Yamaguchi University) | Rotating Boson Star with Large Self-interaction in (2+1) dimensions | 14 pages, 6 figures, RevTeX | Phys.Rev. D62 (2000) 124014 | 10.1103/PhysRevD.62.124014 | null | gr-qc | null | Solutions for rotating boson stars in (2+1) dimensional gravity with a
negative cosmological constant are obtained numerically. The mass, particle
number, and radius of the (2+1) dimensional rotating boson star are shown.
Consequently we find the region where the stable boson star can exist.
| [
{
"created": "Mon, 1 Nov 1999 05:41:52 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Dec 1999 16:56:07 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Sakamoto",
"Kenji",
"",
"Yamaguchi University"
],
[
"Shiraishi",
"Kiyoshi",
"",
"Yamaguchi University"
]
] | Solutions for rotating boson stars in (2+1) dimensional gravity with a negative cosmological constant are obtained numerically. The mass, particle number, and radius of the (2+1) dimensional rotating boson star are shown. Consequently we find the region where the stable boson star can exist. |
1909.02997 | Ulrich Sperhake | Ulrich Sperhake, William Cook, Diandian Wang | The high-energy collision of black holes in higher dimensions | minor corrections to references; 10 pages, 5 figures, in print in
Physical Review D | Phys. Rev. D 100, 104046 (2019) | 10.1103/PhysRevD.100.104046 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the gravitational wave energy $E_{\rm rad}$ radiated in head-on
collisions of equal-mass, nonspinning black holes in up to $D=8$ dimensional
asymptotically flat spacetimes for boost velocities $v$ up to about $90\,\%$ of
the speed of light. We identify two main regimes: Weak radiation at velocities
up to a... | [
{
"created": "Fri, 6 Sep 2019 16:24:19 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Oct 2019 20:08:53 GMT",
"version": "v2"
},
{
"created": "Fri, 15 Nov 2019 16:08:14 GMT",
"version": "v3"
}
] | 2019-11-27 | [
[
"Sperhake",
"Ulrich",
""
],
[
"Cook",
"William",
""
],
[
"Wang",
"Diandian",
""
]
] | We compute the gravitational wave energy $E_{\rm rad}$ radiated in head-on collisions of equal-mass, nonspinning black holes in up to $D=8$ dimensional asymptotically flat spacetimes for boost velocities $v$ up to about $90\,\%$ of the speed of light. We identify two main regimes: Weak radiation at velocities up to abo... |
2302.04654 | Supakchai Ponglertsakul | Chatchai Promsiri and Takol Tangphati and Ekapong Hirunsirisawat and
Supakchai Ponglertsakul | Scalarization of planar anti de Sitter charged black holes in
Einstein-Maxwell-Scalar theory | 31 pages, 13 figures, to match Physical Review D version | Phys. Rev. D 108, 024015 (2023) | 10.1103/PhysRevD.108.024015 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We construct scalarized planar charged black holes in Einstein-Maxwell-scalar
(EMS) theory with the presence of a negative cosmological constant. Domains of
existence of black hole solutions are given in term of nonminimally coupling
constant $\alpha$. Perturbative stability of a scalarized black hole is
investigated... | [
{
"created": "Thu, 9 Feb 2023 14:09:11 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Jul 2023 08:03:42 GMT",
"version": "v2"
}
] | 2023-07-19 | [
[
"Promsiri",
"Chatchai",
""
],
[
"Tangphati",
"Takol",
""
],
[
"Hirunsirisawat",
"Ekapong",
""
],
[
"Ponglertsakul",
"Supakchai",
""
]
] | We construct scalarized planar charged black holes in Einstein-Maxwell-scalar (EMS) theory with the presence of a negative cosmological constant. Domains of existence of black hole solutions are given in term of nonminimally coupling constant $\alpha$. Perturbative stability of a scalarized black hole is investigated b... |
1005.2838 | Allan Joseph Michael Medved | A.J.M. Medved | Yet More on the Universal Quantum Area Spectrum | 6 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We briefly comment on the quantum area spectra of black holes, paying
particular attention to the size of the spacing between adjacent spectral
levels. It has previously been conjectured that this spacing is uniform with a
universal value of $8\pi$ in Planck units. In spite of a recent claim to the
contrary, we argue... | [
{
"created": "Mon, 17 May 2010 08:38:23 GMT",
"version": "v1"
}
] | 2010-05-18 | [
[
"Medved",
"A. J. M.",
""
]
] | We briefly comment on the quantum area spectra of black holes, paying particular attention to the size of the spacing between adjacent spectral levels. It has previously been conjectured that this spacing is uniform with a universal value of $8\pi$ in Planck units. In spite of a recent claim to the contrary, we argue t... |
2404.11801 | Jo\~ao Paulo Bessa Brito | Jo\~ao P. B. Brito, Rafael P. Bernar, Atsushi Higuchi, Lu\'is C. B.
Crispino | Semiclassical bremsstrahlung from a charge radially falling into a
Schwarzschild black hole | 17 pages, 15 figures, published version | Phys. Rev. D 109, 084041, 2024 | 10.1103/PhysRevD.109.084041 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | A semiclassical investigation of the electromagnetic radiation emitted by a
charged particle in a radially freely falling motion in Schwarzschild spacetime
is carried out. We use quantum field theory at tree level to obtain the
one-particle-emission amplitudes. We analyze and compare the energy spectrum
and total ene... | [
{
"created": "Wed, 17 Apr 2024 23:42:11 GMT",
"version": "v1"
}
] | 2024-04-19 | [
[
"Brito",
"João P. B.",
""
],
[
"Bernar",
"Rafael P.",
""
],
[
"Higuchi",
"Atsushi",
""
],
[
"Crispino",
"Luís C. B.",
""
]
] | A semiclassical investigation of the electromagnetic radiation emitted by a charged particle in a radially freely falling motion in Schwarzschild spacetime is carried out. We use quantum field theory at tree level to obtain the one-particle-emission amplitudes. We analyze and compare the energy spectrum and total energ... |
gr-qc/0411129 | Emanuele Berti | Emanuele Berti, Alessandra Buonanno, Clifford M. Will | Estimating spinning binary parameters and testing alternative theories
of gravity with LISA | 29 pages, 9 figures. Matches version accepted in Physical Review D.
More stringent checks in the inversion of the Fisher matrix | Phys.Rev. D71 (2005) 084025 | 10.1103/PhysRevD.71.084025 | null | gr-qc astro-ph hep-th | null | We investigate the effect of spin-orbit and spin-spin couplings on the
estimation of parameters for inspiralling compact binaries of massive black
holes, and for neutron stars inspiralling into intermediate-mass black holes,
using hypothetical data from the proposed Laser Interferometer Space Antenna
(LISA). We work ... | [
{
"created": "Sat, 27 Nov 2004 17:35:24 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Apr 2005 13:41:10 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Berti",
"Emanuele",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Will",
"Clifford M.",
""
]
] | We investigate the effect of spin-orbit and spin-spin couplings on the estimation of parameters for inspiralling compact binaries of massive black holes, and for neutron stars inspiralling into intermediate-mass black holes, using hypothetical data from the proposed Laser Interferometer Space Antenna (LISA). We work bo... |
1211.0823 | Ghanashyam Date | Ghanashyam Date and Nirmalya Kajuri | Polymer quantization and Symmetries | 20 pages, version 2, added further explanations and references.
Results and conclusions unchanged. Version to appear in CQG | Class. Quantum Grav. 30 (2013) 075010 | 10.1088/0264-9381/30/7/075010 | IMSc/2012/11/17 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Polymer quantization was discovered during the construction of Loop Quantum
Cosmology. For the simplest quantum theory of one degree of freedom, the
implications for dynamics were studied for the harmonic oscillator as well as
some other potentials. For more degrees of freedom, the possibility of
continuous, kinemati... | [
{
"created": "Mon, 5 Nov 2012 10:47:27 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Feb 2013 08:02:06 GMT",
"version": "v2"
}
] | 2013-03-19 | [
[
"Date",
"Ghanashyam",
""
],
[
"Kajuri",
"Nirmalya",
""
]
] | Polymer quantization was discovered during the construction of Loop Quantum Cosmology. For the simplest quantum theory of one degree of freedom, the implications for dynamics were studied for the harmonic oscillator as well as some other potentials. For more degrees of freedom, the possibility of continuous, kinematic ... |
0704.0753 | Dr. Anirudh Pradhan | Raj Bali, Umesh Kumar Pareek and Anirudh Pradhan | Bianchi Type I Massive String Magnetized Barotropic Perfect Fluid
Cosmological Model in General Relativity | 10 pages, no figure. Chin. Phys. Lett., Vol. 24, No. 8 (2007), to
appear | Chin.Phys.Lett.24:2455-2458,2007 | 10.1088/0256-307X/24/8/082 | null | gr-qc | null | Bianchi type I massive string cosmological model with magnetic field of
barotropic perfect fluid distribution through the techniques used by Latelier
and Stachel, is investigated. To get the deterministic model of the universe,
it is assumed that the universe is filled with barotropic perfect fluid
distribution. The ... | [
{
"created": "Thu, 5 Apr 2007 16:07:36 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Jun 2007 11:40:50 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Bali",
"Raj",
""
],
[
"Pareek",
"Umesh Kumar",
""
],
[
"Pradhan",
"Anirudh",
""
]
] | Bianchi type I massive string cosmological model with magnetic field of barotropic perfect fluid distribution through the techniques used by Latelier and Stachel, is investigated. To get the deterministic model of the universe, it is assumed that the universe is filled with barotropic perfect fluid distribution. The ma... |
1205.1071 | Ivica Smoli\'c | Ivica Smoli\'c | Killing Horizons as Equipotential Hypersurfaces | 8 pages; revised, published version; several assumptions removed from
the final theorem | Class. Quantum Grav. 29 (2012) 207002 | 10.1088/0264-9381/29/20/207002 | ZTF-12-03 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this note we present a new proof that Killing horizons are equipotential
hypersurfaces for the electric and the magnetic scalar potential, that makes no
use of gravitational field equations or the assumption about the existence of
bifurcation surface.
| [
{
"created": "Fri, 4 May 2012 20:44:23 GMT",
"version": "v1"
},
{
"created": "Thu, 10 May 2012 13:42:59 GMT",
"version": "v2"
},
{
"created": "Tue, 11 Sep 2012 20:00:17 GMT",
"version": "v3"
}
] | 2015-03-20 | [
[
"Smolić",
"Ivica",
""
]
] | In this note we present a new proof that Killing horizons are equipotential hypersurfaces for the electric and the magnetic scalar potential, that makes no use of gravitational field equations or the assumption about the existence of bifurcation surface. |
2005.08828 | Diego Rubiera-Garcia | Merce Guerrero, Diego Rubiera-Garcia | Nonsingular black holes in nonlinear gravity coupled to Euler-Heisenberg
electrodynamics | 14 pages, 8 figures, revtex4-1 style. v2: some new discussion and
minor corrections. Version to appear in Phys. Rev. D | Phys. Rev. D 102, 024005 (2020) | 10.1103/PhysRevD.102.024005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study static, spherically symmetric black holes supported by
Euler-Heisenberg theory of electrodynamics and coupled to two different
modified theories of gravity. Such theories are the quadratic $f(R)$ model and
Eddington-inspired Born-Infeld gravity, both formulated in metric-affine
spaces, where metric and affin... | [
{
"created": "Mon, 18 May 2020 15:59:03 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Jun 2020 06:24:34 GMT",
"version": "v2"
}
] | 2020-07-08 | [
[
"Guerrero",
"Merce",
""
],
[
"Rubiera-Garcia",
"Diego",
""
]
] | We study static, spherically symmetric black holes supported by Euler-Heisenberg theory of electrodynamics and coupled to two different modified theories of gravity. Such theories are the quadratic $f(R)$ model and Eddington-inspired Born-Infeld gravity, both formulated in metric-affine spaces, where metric and affine ... |
2307.11933 | Krishnanand K Nair | Krishnanand K. Nair and Mathew Thomas Arun | Constraint on cosmological constant in generalized Skryme-teleparallel
system | 19 pages, 10 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The Einstein-Skyrme system is understood to defy the "no hair" conjecture by
possessing black-hole solutions with fractional baryon number outside the event
horizon. In this article, we extend the study of the Skyrme system to
teleparallel gravity framework. We consider two scenarios, the Teleparallel
Equivalent of G... | [
{
"created": "Fri, 21 Jul 2023 22:53:52 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Apr 2024 14:34:17 GMT",
"version": "v2"
}
] | 2024-04-02 | [
[
"Nair",
"Krishnanand K.",
""
],
[
"Arun",
"Mathew Thomas",
""
]
] | The Einstein-Skyrme system is understood to defy the "no hair" conjecture by possessing black-hole solutions with fractional baryon number outside the event horizon. In this article, we extend the study of the Skyrme system to teleparallel gravity framework. We consider two scenarios, the Teleparallel Equivalent of Gen... |
gr-qc/0102062 | Daniel Sforza | Rafael Ferraro and Daniel M. Sforza | Quantization of a generally covariant gauge system with two super
Hamiltonian constraints | 17 pages. Latex file. Minor changes, two references added | Phys.Rev. D64 (2001) 024020 | 10.1103/PhysRevD.64.024020 | null | gr-qc | null | The Becci-Rouet-Stora-Tyutin (BRST) operator quantization of a
finite-dimensional gauge system featuring two quadratic super Hamiltonian and m
linear supermomentum constraints is studied as a model for quantizing generally
covariant gauge theories. The proposed model ``completely'' mimics the
constraint algebra of Ge... | [
{
"created": "Tue, 13 Feb 2001 20:02:29 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Jul 2001 20:51:19 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Ferraro",
"Rafael",
""
],
[
"Sforza",
"Daniel M.",
""
]
] | The Becci-Rouet-Stora-Tyutin (BRST) operator quantization of a finite-dimensional gauge system featuring two quadratic super Hamiltonian and m linear supermomentum constraints is studied as a model for quantizing generally covariant gauge theories. The proposed model ``completely'' mimics the constraint algebra of Gene... |
1807.03795 | Ludwig Jens Papenfort | L. Jens Papenfort, Roman Gold, Luciano Rezzolla | Dynamical ejecta and nucleosynthetic yields from eccentric binary
neutron-star mergers | 24 pages, 14 figures, matches version accepted by PRD | Phys. Rev. D 98, 104028 (2018) | 10.1103/PhysRevD.98.104028 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With the recent advent of multi-messenger gravitational-wave astronomy and in
anticipation of more sensitive, next-generation gravitational-wave detectors,
we investigate the dynamics, gravitational-wave emission, and nucleosynthetic
yields of numerous eccentric binary neutron-star mergers having different
equations ... | [
{
"created": "Tue, 10 Jul 2018 18:00:06 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Dec 2018 21:58:17 GMT",
"version": "v2"
}
] | 2018-12-07 | [
[
"Papenfort",
"L. Jens",
""
],
[
"Gold",
"Roman",
""
],
[
"Rezzolla",
"Luciano",
""
]
] | With the recent advent of multi-messenger gravitational-wave astronomy and in anticipation of more sensitive, next-generation gravitational-wave detectors, we investigate the dynamics, gravitational-wave emission, and nucleosynthetic yields of numerous eccentric binary neutron-star mergers having different equations of... |
1702.03285 | Muxin Han | Muxin Han, Zichang Huang | Loop-Quantum-Gravity Simplicity Constraint as Surface Defect in Complex
Chern-Simons Theory | 16 pages, 3 figures, presentation improved | Phys. Rev. D 95, 104031 (2017) | 10.1103/PhysRevD.95.104031 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The simplicity constraint is studied in the context of 4d spinfoam models
with cosmological constant. We find that the quantum simplicity constraint is
realized as the 2d surface defect in SL(2,$\mathbb{C}$) Chern-Simons theory in
the construction of spinfoam amplitudes. By this realization of simplicity
constraint i... | [
{
"created": "Fri, 10 Feb 2017 18:57:00 GMT",
"version": "v1"
},
{
"created": "Fri, 5 May 2017 01:53:01 GMT",
"version": "v2"
}
] | 2017-05-25 | [
[
"Han",
"Muxin",
""
],
[
"Huang",
"Zichang",
""
]
] | The simplicity constraint is studied in the context of 4d spinfoam models with cosmological constant. We find that the quantum simplicity constraint is realized as the 2d surface defect in SL(2,$\mathbb{C}$) Chern-Simons theory in the construction of spinfoam amplitudes. By this realization of simplicity constraint in ... |
1801.09711 | Paul Chesler | Paul M. Chesler and David A. Lowe | Nonlinear evolution of the AdS$_4$ black hole bomb | 5 pages + 2 pages supplemental materials. v2: added ref and minor
clarifications in discussion | Phys. Rev. Lett. 122, 181101 (2019) | 10.1103/PhysRevLett.122.181101 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The superradiant instability of rotating black holes with negative
cosmological constant is studied by numerically solving the full
3+1-dimensional Einstein equations. We find evidence for an epoch dominated by
a solution with a single helical Killing vector and a multi-stage process with
distinct superradiant instab... | [
{
"created": "Mon, 29 Jan 2018 19:12:17 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Feb 2018 03:20:53 GMT",
"version": "v2"
}
] | 2019-05-15 | [
[
"Chesler",
"Paul M.",
""
],
[
"Lowe",
"David A.",
""
]
] | The superradiant instability of rotating black holes with negative cosmological constant is studied by numerically solving the full 3+1-dimensional Einstein equations. We find evidence for an epoch dominated by a solution with a single helical Killing vector and a multi-stage process with distinct superradiant instabil... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.