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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2302.05683 | Vasiliy P. Neznamov | V.P.Neznamov | Quantum probing of singularities at event horizons of black holes | 19 pages | International Journal of Modern Physics A 36 (2021) 2150147 | 10.1142/S0217751X21501475 | null | gr-qc hep-th | http://creativecommons.org/publicdomain/zero/1.0/ | It is proved that coordinate transformations of the Schwarzschild metric to
new static and stationary metrics do not eliminate the mode of a particle
''fall'' to the event horizon of a black hole. This mode is unacceptable for
the quantum mechanics of stationary states.
| [
{
"created": "Sat, 11 Feb 2023 12:39:31 GMT",
"version": "v1"
}
] | 2023-02-14 | [
[
"Neznamov",
"V. P.",
""
]
] | It is proved that coordinate transformations of the Schwarzschild metric to new static and stationary metrics do not eliminate the mode of a particle ''fall'' to the event horizon of a black hole. This mode is unacceptable for the quantum mechanics of stationary states. |
2207.14531 | Naimi Takka | N. Takka and A. Bouda | Maxwell's equations and Lorentz force in doubly special relativity | null | Indian J Phys 94, 1227 (2020) | 10.1007/s12648-019-01556-x | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | On the basis of all commutation relations of the k-deformed phase space
incorporating the k-Minkowski space-time, we have derived in this paper an
extended first approximation of both Maxwell's equations and Lorentz force in
doubly (or deformed) special relativity (DSR). For this purpose, we have used
our approach of... | [
{
"created": "Fri, 29 Jul 2022 07:57:44 GMT",
"version": "v1"
}
] | 2022-08-01 | [
[
"Takka",
"N.",
""
],
[
"Bouda",
"A.",
""
]
] | On the basis of all commutation relations of the k-deformed phase space incorporating the k-Minkowski space-time, we have derived in this paper an extended first approximation of both Maxwell's equations and Lorentz force in doubly (or deformed) special relativity (DSR). For this purpose, we have used our approach of t... |
1207.3621 | Jaume Haro | Jaume de Haro | Does loop quantum cosmology replace the big rip singularity by a
non-singular bounce? | Accepted for publication in JCAP | JCAP 07 (11) 2012 | 10.1088/1475-7516/2012/11/037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is stated that holonomy corrections in loop quantum cosmology introduce a
modification in Friedmann's equation which prevent the big rip singularity.
Recently in \cite{h12} it has been proved that this modified Friedmann equation
is obtained in an inconsistent way, what means that the results deduced from
it, in p... | [
{
"created": "Mon, 16 Jul 2012 10:20:50 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Nov 2012 08:17:28 GMT",
"version": "v2"
}
] | 2014-09-05 | [
[
"de Haro",
"Jaume",
""
]
] | It is stated that holonomy corrections in loop quantum cosmology introduce a modification in Friedmann's equation which prevent the big rip singularity. Recently in \cite{h12} it has been proved that this modified Friedmann equation is obtained in an inconsistent way, what means that the results deduced from it, in par... |
gr-qc/9912045 | Eric Poisson | Eric Poisson | An introduction to the Lorentz-Dirac equation | 14 pages, ReVTeX, 3 figures | null | null | null | gr-qc | null | These notes provide two derivations of the Lorentz-Dirac equation. The first
is patterned after Landau and Lifshitz and is based on the observation that the
half-retarded minus half-advanced potential is entirely responsible for the
radiation-reaction force. The second is patterned after Dirac, and is based
upon cons... | [
{
"created": "Fri, 10 Dec 1999 20:38:51 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Poisson",
"Eric",
""
]
] | These notes provide two derivations of the Lorentz-Dirac equation. The first is patterned after Landau and Lifshitz and is based on the observation that the half-retarded minus half-advanced potential is entirely responsible for the radiation-reaction force. The second is patterned after Dirac, and is based upon consid... |
gr-qc/0611061 | E. Kyriakopoulos | E. Kyriakopoulos | Black Holes in Models with Dilaton Field and Electric or Electric and
Magnetic Charges | 16 pages. Accepted for publication in CQG | Class.Quant.Grav.23:7591-7602,2006 | 10.1088/0264-9381/23/24/027 | null | gr-qc | null | Exact static spherically symmetric charged black holes in four dimensions are
presented. One of them has only electric charge and another electric and
magnetic charges. In these solutions the metric is asymptotically flat, has two
horizons, irremovable singularity only at $r=0$, and the dilaton field is
singular only... | [
{
"created": "Fri, 10 Nov 2006 20:06:11 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Kyriakopoulos",
"E.",
""
]
] | Exact static spherically symmetric charged black holes in four dimensions are presented. One of them has only electric charge and another electric and magnetic charges. In these solutions the metric is asymptotically flat, has two horizons, irremovable singularity only at $r=0$, and the dilaton field is singular only a... |
1210.8106 | \"Ozg\"ur Akarsu | Ozgur Akarsu, Tekin Dereli | Late Time Acceleration of the 3-Space in a Higher Dimensional Steady
State Universe in Dilaton Gravity | 30 pages, 19 figures, 3 tables; improved significantly; the version
accepted for publication in Journal of Cosmology and Astroparticle Physics
(JCAP) | JCAP 02 (2013) 050 | 10.1088/1475-7516/2013/02/050 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present cosmological solutions for (1+3+n)-dimensional steady state
universe in dilaton gravity with an arbitrary dilaton coupling constant w and
exponential dilaton self-interaction potentials in the string frame. We focus
particularly on the class in which the 3-space expands with a time varying
deceleration par... | [
{
"created": "Tue, 30 Oct 2012 18:15:34 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Feb 2013 11:01:59 GMT",
"version": "v2"
}
] | 2013-03-01 | [
[
"Akarsu",
"Ozgur",
""
],
[
"Dereli",
"Tekin",
""
]
] | We present cosmological solutions for (1+3+n)-dimensional steady state universe in dilaton gravity with an arbitrary dilaton coupling constant w and exponential dilaton self-interaction potentials in the string frame. We focus particularly on the class in which the 3-space expands with a time varying deceleration param... |
1011.3022 | David Brizuela | Martin Bojowald, David Brizuela, Hector H. Hernandez, Michael J. Koop,
Hugo A. Morales-Tecotl | High-order quantum back-reaction and quantum cosmology with a positive
cosmological constant | 21 pages, 11 figures. Several clarifications, four references, and a
new appendix added. Version accepted for publication in PRD | Phys.Rev.D84:043514,2011 | 10.1103/PhysRevD.84.043514 | IGC-10/11-2 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | When quantum back-reaction by fluctuations, correlations and higher moments
of a state becomes strong, semiclassical quantum mechanics resembles a
dynamical system with a high-dimensional phase space. Here, systematic
computational methods to derive the dynamical equations including all quantum
corrections to high or... | [
{
"created": "Fri, 12 Nov 2010 20:08:33 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Sep 2011 15:52:24 GMT",
"version": "v2"
}
] | 2011-09-13 | [
[
"Bojowald",
"Martin",
""
],
[
"Brizuela",
"David",
""
],
[
"Hernandez",
"Hector H.",
""
],
[
"Koop",
"Michael J.",
""
],
[
"Morales-Tecotl",
"Hugo A.",
""
]
] | When quantum back-reaction by fluctuations, correlations and higher moments of a state becomes strong, semiclassical quantum mechanics resembles a dynamical system with a high-dimensional phase space. Here, systematic computational methods to derive the dynamical equations including all quantum corrections to high orde... |
1510.02751 | Leonid Perlov | Leonid Perlov, Michael Bukatin | Barbero-Immirzi parameter as a solution of the simplicity constraints | The other paper was written and published, which includes this one.
The result was more general | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we naturally obtain the values of the Barbero-Immirzi parameter
as the solution of the simplicity constraints rather than setting it a priori.
Particularly the Main theorem shows that if $\gamma = \pm i$ then the
simplicity constraints require that the corresponding Lorentz group
representations be nece... | [
{
"created": "Fri, 9 Oct 2015 18:05:25 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Nov 2015 15:38:23 GMT",
"version": "v2"
},
{
"created": "Wed, 25 Nov 2015 14:57:57 GMT",
"version": "v3"
},
{
"created": "Wed, 24 May 2017 15:57:42 GMT",
"version": "v4"
}
] | 2017-05-25 | [
[
"Perlov",
"Leonid",
""
],
[
"Bukatin",
"Michael",
""
]
] | In this paper we naturally obtain the values of the Barbero-Immirzi parameter as the solution of the simplicity constraints rather than setting it a priori. Particularly the Main theorem shows that if $\gamma = \pm i$ then the simplicity constraints require that the corresponding Lorentz group representations be necess... |
1202.0540 | Abraham Harte | Abraham I. Harte, Theodore D. Drivas | Caustics and wave propagation in curved spacetimes | 34 pages, 7 figures, fixed typos | Phys. Rev. D 85, 124039 (2012) | 10.1103/PhysRevD.85.124039 | AEI-2012-041 | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the effects of light cone caustics on the propagation of
linear scalar fields in generic four-dimensional spacetimes. In particular, we
analyze the singular structure of relevant Green functions. As expected from
general theorems, Green functions associated with wave equations are globally
singular alo... | [
{
"created": "Thu, 2 Feb 2012 20:40:10 GMT",
"version": "v1"
},
{
"created": "Wed, 9 May 2012 12:22:51 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Jun 2012 13:56:22 GMT",
"version": "v3"
}
] | 2012-07-09 | [
[
"Harte",
"Abraham I.",
""
],
[
"Drivas",
"Theodore D.",
""
]
] | We investigate the effects of light cone caustics on the propagation of linear scalar fields in generic four-dimensional spacetimes. In particular, we analyze the singular structure of relevant Green functions. As expected from general theorems, Green functions associated with wave equations are globally singular along... |
1601.07921 | De-Chang Dai | De-Chang Dai, Dejan Stojkovic | Pre-Hawking radiation may allow for reconstruction of the mass
distribution of the collapsing object | 4 figures, 5 page, accepted by PLB | Physics Letters B, 758 , pp. 429-433 (2016) | 10.1016/j.physletb.2016.05.037 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hawking radiation explicitly depends only on the black hole's total mass,
charge and angular momentum. It is therefore generally believed that one cannot
reconstruct the information about the initial mass distribution of an object
that made the black hole. However, instead of looking at radiation from a
static black ... | [
{
"created": "Tue, 26 Jan 2016 05:10:56 GMT",
"version": "v1"
},
{
"created": "Fri, 13 May 2016 01:26:44 GMT",
"version": "v2"
}
] | 2016-05-31 | [
[
"Dai",
"De-Chang",
""
],
[
"Stojkovic",
"Dejan",
""
]
] | Hawking radiation explicitly depends only on the black hole's total mass, charge and angular momentum. It is therefore generally believed that one cannot reconstruct the information about the initial mass distribution of an object that made the black hole. However, instead of looking at radiation from a static black ho... |
2107.00457 | Zoe Wyatt | David Fajman, Maximilian Ofner, Zoe Wyatt | Slowly expanding stable dust spacetimes | null | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We establish the future nonlinear stability of a large class of FLRW models
as solutions to the Einstein-Dust system. We consider the case of a vanishing
cosmological constant, which in particular implies that the expansion rate of
the respective models is linear i.e. has zero acceleration. The resulting
spacetimes a... | [
{
"created": "Thu, 1 Jul 2021 14:07:56 GMT",
"version": "v1"
}
] | 2021-07-02 | [
[
"Fajman",
"David",
""
],
[
"Ofner",
"Maximilian",
""
],
[
"Wyatt",
"Zoe",
""
]
] | We establish the future nonlinear stability of a large class of FLRW models as solutions to the Einstein-Dust system. We consider the case of a vanishing cosmological constant, which in particular implies that the expansion rate of the respective models is linear i.e. has zero acceleration. The resulting spacetimes are... |
gr-qc/0611033 | Sergey S. Kokarev | Anna Astakhova, Kirill Goodz, Sergey Kokarev | P-Structures, P-Geometry and Observer's Perceptive Space | 6 figures, 4 tables, submitted to Grav. and Cosm | Collected Articles of RSEC "Logos" (2006) v1, pp.73-106 (In
Russian) | null | null | gr-qc | null | Mathematical theory of an observer is elaborated upon the basis of
A.Poincare's ideas on the nature of geometry and the role of observer's
perceptive space. The said theory is generalizing reference frames theory in
GR. Physical structure (P-structure) and corresponding physical geometry
(P-geometry) notions, represe... | [
{
"created": "Sun, 5 Nov 2006 14:04:41 GMT",
"version": "v1"
}
] | 2008-10-30 | [
[
"Astakhova",
"Anna",
""
],
[
"Goodz",
"Kirill",
""
],
[
"Kokarev",
"Sergey",
""
]
] | Mathematical theory of an observer is elaborated upon the basis of A.Poincare's ideas on the nature of geometry and the role of observer's perceptive space. The said theory is generalizing reference frames theory in GR. Physical structure (P-structure) and corresponding physical geometry (P-geometry) notions, represent... |
2211.03465 | Juan Calderon Bustillo | Juan Calder\'on Bustillo, Samson H.W. Leong and Koustav Chandra | GW190412: measuring a black-hole recoil direction through higher-order
gravitational-wave modes | 8 pages, 4 figures | null | null | LIGO DCC - P2200332 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativity predicts that gravitational waves (GWs) carry linear
momentum. Consequently, the remnant black hole of a black-hole merger can
inherit a recoil velocity or ``kick'' of crucial implications in, e.g,
black-hole formation scenarios. While the kick magnitude is determined by the
mass ratio and spins of... | [
{
"created": "Mon, 7 Nov 2022 11:27:19 GMT",
"version": "v1"
}
] | 2022-11-08 | [
[
"Bustillo",
"Juan Calderón",
""
],
[
"Leong",
"Samson H. W.",
""
],
[
"Chandra",
"Koustav",
""
]
] | General relativity predicts that gravitational waves (GWs) carry linear momentum. Consequently, the remnant black hole of a black-hole merger can inherit a recoil velocity or ``kick'' of crucial implications in, e.g, black-hole formation scenarios. While the kick magnitude is determined by the mass ratio and spins of t... |
1307.5111 | Francesco Pannarale | Francesco Pannarale, Emanuele Berti, Koutarou Kyutoku, and Masaru
Shibata | Nonspinning black hole-neutron star mergers: a model for the amplitude
of gravitational waveforms | 22 pages; 10 figures; 4 tables; a MATHEMATICA package is available
at: http://www.phy.olemiss.edu/~berti/research.html | Physical Review D 88, 084011 (2013) | 10.1103/PhysRevD.88.084011 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole-neutron star binary mergers display a much richer phenomenology
than black hole-black hole mergers, even in the relatively simple case -
considered in this paper - in which both the black hole and the neutron star
are nonspinning. When the neutron star is tidally disrupted, the gravitational
wave emission ... | [
{
"created": "Fri, 19 Jul 2013 01:20:25 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Oct 2013 17:47:05 GMT",
"version": "v2"
}
] | 2015-06-16 | [
[
"Pannarale",
"Francesco",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Kyutoku",
"Koutarou",
""
],
[
"Shibata",
"Masaru",
""
]
] | Black hole-neutron star binary mergers display a much richer phenomenology than black hole-black hole mergers, even in the relatively simple case - considered in this paper - in which both the black hole and the neutron star are nonspinning. When the neutron star is tidally disrupted, the gravitational wave emission is... |
1409.1902 | Rhiannon Cuttell | Rhiannon Cuttell and Mairi Sakellariadou | Fourth order deformed general relativity | fixed formatting, updated author name, 28 pages, 2 figures | Phys. Rev. D 90, 104026 (2014) | 10.1103/PhysRevD.90.104026 | KCL-PH-TH/2014-34 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Whenever the condition of anomaly freedom is imposed within the framework of
effective approaches to loop quantum cosmology, one seems to conclude that a
deformation of general covariance is required. Here, starting from a general
deformation we regain an effective gravitational Lagrangian including terms up
to fourt... | [
{
"created": "Fri, 5 Sep 2014 19:00:12 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Dec 2014 14:54:49 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Jun 2018 15:21:41 GMT",
"version": "v3"
}
] | 2018-06-21 | [
[
"Cuttell",
"Rhiannon",
""
],
[
"Sakellariadou",
"Mairi",
""
]
] | Whenever the condition of anomaly freedom is imposed within the framework of effective approaches to loop quantum cosmology, one seems to conclude that a deformation of general covariance is required. Here, starting from a general deformation we regain an effective gravitational Lagrangian including terms up to fourth ... |
gr-qc/0507128 | Filimonova Irina V | Yu.F.Pirogov | Space-time: emerging vs. existing | Plenary talk presented at Workshop on High Energy Physics&Field
Theory (Protvino, Russia, 2004) | null | null | HEPFT/2004/9 | gr-qc | null | The concept of the space-time as emerging in the world phase transition, vs.
a priori existing, is put forward. The theory of gravity with two basic
symmetries, the global affine one and the general covariance, is developed.
Implications for the Universe are indicated.
| [
{
"created": "Fri, 29 Jul 2005 07:09:48 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pirogov",
"Yu. F.",
""
]
] | The concept of the space-time as emerging in the world phase transition, vs. a priori existing, is put forward. The theory of gravity with two basic symmetries, the global affine one and the general covariance, is developed. Implications for the Universe are indicated. |
2106.06968 | Eric Poisson | Michael LaHaye and Eric Poisson | Particle hanging on a string near a Schwarzschild black hole | 43 pages, no figure, matches version published in Physical Review D | Phys. Rev. D 104, 044016 (2021) | 10.1103/PhysRevD.104.044016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The literature features many instances of spacetimes containing two black
holes held apart by a thin distribution of matter on the axis joining the
holes. For all such spacetimes, the Einstein field equations are integrated
with an energy-momentum tensor that does not include a contribution from the
axial matter; the... | [
{
"created": "Sun, 13 Jun 2021 11:43:40 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Aug 2021 19:56:24 GMT",
"version": "v2"
}
] | 2021-08-18 | [
[
"LaHaye",
"Michael",
""
],
[
"Poisson",
"Eric",
""
]
] | The literature features many instances of spacetimes containing two black holes held apart by a thin distribution of matter on the axis joining the holes. For all such spacetimes, the Einstein field equations are integrated with an energy-momentum tensor that does not include a contribution from the axial matter; the p... |
2009.06990 | F Shojai | R. Saadati, F. Shojai | Regular Kiselev black hole with a de Sitter core | 21 pages, 8 figures | Class. Quantum Grav. 38 (2021) 135025 | 10.1088/1361-6382/abfed5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present some new aspects of Kiselev black hole and then study the null and
timelike thin shell collapse in this spacetime. For the latter, we show that
Kiselev black hole can be matched to de Sitter core with a thin timelike dust
shell to produce a non-singular black hole space-time. It is argued that for
timelike... | [
{
"created": "Tue, 15 Sep 2020 11:24:38 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Dec 2020 10:01:29 GMT",
"version": "v2"
},
{
"created": "Tue, 4 May 2021 14:14:28 GMT",
"version": "v3"
}
] | 2021-06-10 | [
[
"Saadati",
"R.",
""
],
[
"Shojai",
"F.",
""
]
] | We present some new aspects of Kiselev black hole and then study the null and timelike thin shell collapse in this spacetime. For the latter, we show that Kiselev black hole can be matched to de Sitter core with a thin timelike dust shell to produce a non-singular black hole space-time. It is argued that for timelike h... |
0712.1515 | Steven Hergt | Steven Hergt, Gerhard Sch\"afer | Higher-order-in-spin interaction Hamiltonians for binary black holes
from source terms of Kerr geometry in approximate ADM coordinates | REVTeX4, 20 pages, typos corrected in Eq. (124) and (130) | Phys.Rev.D77:104001,2008 | 10.1103/PhysRevD.77.104001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Kerr metric outside the ergosphere is transformed into ADM coordinates up
to the orders $1/r^4$ and $a^2$, respectively in radial coordinate $r$ and
reduced angular momentum variable $a$, starting from the Kerr solution in
quasi-isotropic as well as harmonic coordinates. The distributional source
terms for the ap... | [
{
"created": "Mon, 10 Dec 2007 15:46:03 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Mar 2008 11:34:46 GMT",
"version": "v2"
},
{
"created": "Mon, 5 May 2008 15:06:45 GMT",
"version": "v3"
},
{
"created": "Wed, 25 Apr 2012 09:41:34 GMT",
"version": "v4"
}
] | 2012-04-26 | [
[
"Hergt",
"Steven",
""
],
[
"Schäfer",
"Gerhard",
""
]
] | The Kerr metric outside the ergosphere is transformed into ADM coordinates up to the orders $1/r^4$ and $a^2$, respectively in radial coordinate $r$ and reduced angular momentum variable $a$, starting from the Kerr solution in quasi-isotropic as well as harmonic coordinates. The distributional source terms for the appr... |
gr-qc/0502065 | Emanuele Berti | Emanuele Berti, Kostas D. Kokkotas | Quasinormal modes of Kerr-Newman black holes: coupling of
electromagnetic and gravitational perturbations | 13 pages, 3 figures. Minor changes to match version accepted in Phys.
Rev. D | Phys.Rev. D71 (2005) 124008 | 10.1103/PhysRevD.71.124008 | null | gr-qc astro-ph hep-th | null | We compute numerically the quasinormal modes of Kerr-Newman black holes in
the scalar case, for which the perturbation equations are separable. Then we
study different approximations to decouple electromagnetic and gravitational
perturbations of the Kerr-Newman metric, computing the corresponding
quasinormal modes. O... | [
{
"created": "Mon, 14 Feb 2005 17:05:46 GMT",
"version": "v1"
},
{
"created": "Sun, 29 May 2005 20:59:44 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Berti",
"Emanuele",
""
],
[
"Kokkotas",
"Kostas D.",
""
]
] | We compute numerically the quasinormal modes of Kerr-Newman black holes in the scalar case, for which the perturbation equations are separable. Then we study different approximations to decouple electromagnetic and gravitational perturbations of the Kerr-Newman metric, computing the corresponding quasinormal modes. Our... |
gr-qc/9911009 | Jorge Pullin | Cayetano Di Bartolo, Rodolfo Gambini, Jorge Griego, Jorge Pullin | Canonical quantum gravity in the Vassiliev invariants arena: I.
Kinematical structure | 21 Pages, RevTex, many figures included with psfig | Class.Quant.Grav. 17 (2000) 3211-3238 | 10.1088/0264-9381/17/16/309 | CGPG-99/11-1 | gr-qc hep-th | null | We generalize the idea of Vassiliev invariants to the spin network context,
with the aim of using these invariants as a kinematical arena for a canonical
quantization of gravity. This paper presents a detailed construction of these
invariants (both ambient and regular isotopic) requiring a significant
elaboration bas... | [
{
"created": "Wed, 3 Nov 1999 09:04:02 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Di Bartolo",
"Cayetano",
""
],
[
"Gambini",
"Rodolfo",
""
],
[
"Griego",
"Jorge",
""
],
[
"Pullin",
"Jorge",
""
]
] | We generalize the idea of Vassiliev invariants to the spin network context, with the aim of using these invariants as a kinematical arena for a canonical quantization of gravity. This paper presents a detailed construction of these invariants (both ambient and regular isotopic) requiring a significant elaboration based... |
1905.11919 | Daniel Blixt | Daniel Blixt, Manuel Hohmann, Martin Kr\v{s}\v{s}\'ak and Christian
Pfeifer | Hamiltonian Analysis In New General Relativity | 6 pages, 1 figure, talk delivered at the AT1 parallel session,
"Hamiltonian Analysis In New General Relativity", at the 15th Marcel
Grossmann Meeting 2018. Corrections of great importance have been
implemented, which lead to changes in Fig. 1 | null | 10.1142/9789811258251_0038 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that one can formulate an action in teleparallel gravity which is
equivalent to general relativity, up to a boundary term. In this geometry we
have vanishing curvature, and non-vanishing torsion. The action is constructed
by three different contractions of torsion with specific coefficients. By
allowing t... | [
{
"created": "Tue, 28 May 2019 16:30:11 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Nov 2021 14:06:50 GMT",
"version": "v2"
}
] | 2022-07-07 | [
[
"Blixt",
"Daniel",
""
],
[
"Hohmann",
"Manuel",
""
],
[
"Krššák",
"Martin",
""
],
[
"Pfeifer",
"Christian",
""
]
] | It is known that one can formulate an action in teleparallel gravity which is equivalent to general relativity, up to a boundary term. In this geometry we have vanishing curvature, and non-vanishing torsion. The action is constructed by three different contractions of torsion with specific coefficients. By allowing the... |
1911.05278 | Jieci Wang | Jieci Wang, Cuihong Wen, Songbai Chen, and Jilliang Jing | Generation of genuine tripartite entanglement for continuous variables
in de Sitter space | 17pages, 7 figures | Phys. Lett. B 800, 135109 (2020) | 10.1016/j.physletb.2019.135109 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the distribution of quantum entanglement for continuous variables
among causally disconnected open charts in de Sitter space. It is found that
genuine tripartite entanglement is generated among the open chart modes under
the influence of curvature of de Sitter space for any nonzero squeezing.
Bipartite entan... | [
{
"created": "Wed, 13 Nov 2019 04:00:45 GMT",
"version": "v1"
}
] | 2020-01-23 | [
[
"Wang",
"Jieci",
""
],
[
"Wen",
"Cuihong",
""
],
[
"Chen",
"Songbai",
""
],
[
"Jing",
"Jilliang",
""
]
] | We study the distribution of quantum entanglement for continuous variables among causally disconnected open charts in de Sitter space. It is found that genuine tripartite entanglement is generated among the open chart modes under the influence of curvature of de Sitter space for any nonzero squeezing. Bipartite entangl... |
0811.1781 | Roman Buniy | Roman V. Buniy and Thomas W. Kephart | Decomposition of geometric perturbations | 7 pages | Phys.Lett.B674:313-315,2009 | 10.1016/j.physletb.2009.03.043 | IUHET-522 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For an infinitesimal deformation of a Riemannian manifold, we prove that the
scalar, vector, and tensor modes in decompositions of perturbations of the
metric tensor, the scalar curvature, the Ricci tensor, and the Einstein tensor
decouple if and only if the manifold is Einstein. Four-dimensional space-time
satisfyin... | [
{
"created": "Wed, 12 Nov 2008 20:57:05 GMT",
"version": "v1"
}
] | 2009-11-13 | [
[
"Buniy",
"Roman V.",
""
],
[
"Kephart",
"Thomas W.",
""
]
] | For an infinitesimal deformation of a Riemannian manifold, we prove that the scalar, vector, and tensor modes in decompositions of perturbations of the metric tensor, the scalar curvature, the Ricci tensor, and the Einstein tensor decouple if and only if the manifold is Einstein. Four-dimensional space-time satisfying ... |
1608.03830 | Mauricio Bellini | Jes\'us Mart\'in Romero (IFIMAR - CONICET and UNMdP), Mauricio Bellini
(IFIMAR - CONICET and UNMdP) | Gravito-magnetic monopoles in traversable wormholes from WIMT | Version accepted in Phys. Dark Univ | null | null | null | gr-qc hep-th physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using Weitzenb\"ock Induced Matter Theory (WIMT), we study Schwarzschild
wormholes performing different foliations on an extended (non-vaccuum) 5D
manifold. We explore the geodesic equations for observers which are in the
interior of a traversable wormhole and how these observers can detect
gravito-magnetic monopoles... | [
{
"created": "Fri, 12 Aug 2016 15:35:10 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Dec 2016 13:53:06 GMT",
"version": "v2"
}
] | 2016-12-13 | [
[
"Romero",
"Jesús Martín",
"",
"IFIMAR - CONICET and UNMdP"
],
[
"Bellini",
"Mauricio",
"",
"IFIMAR - CONICET and UNMdP"
]
] | Using Weitzenb\"ock Induced Matter Theory (WIMT), we study Schwarzschild wormholes performing different foliations on an extended (non-vaccuum) 5D manifold. We explore the geodesic equations for observers which are in the interior of a traversable wormhole and how these observers can detect gravito-magnetic monopoles w... |
0807.1710 | Mew-Bing Wan | M.-B. Wan, K.-J. Jin, W.-M. Suen | Dynamical Analysis of the Structure of Neutron Star Critical Collapses | Poster version presented at the "2nd Course of the International
School on Astrophysical Relativity", Erice, Italy, June 27th - July 5th;
Shorter version to appear in Proceedings | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Jin et al reported that axisymmetric simulations of NS-like objects with
polytropic EOS undergo critical gravitational collapse. As the critical
collapse observed via fine-tuning of the adiabatic index $\Gamma$, they
conjecture that critical phenomena may occur in realistic astrophysical
scenarios. To clarify the imp... | [
{
"created": "Thu, 10 Jul 2008 17:40:11 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Jul 2008 22:57:22 GMT",
"version": "v2"
}
] | 2008-07-11 | [
[
"Wan",
"M. -B.",
""
],
[
"Jin",
"K. -J.",
""
],
[
"Suen",
"W. -M.",
""
]
] | Jin et al reported that axisymmetric simulations of NS-like objects with polytropic EOS undergo critical gravitational collapse. As the critical collapse observed via fine-tuning of the adiabatic index $\Gamma$, they conjecture that critical phenomena may occur in realistic astrophysical scenarios. To clarify the impli... |
2302.10966 | Nuno Barros e S\'a | Nuno Barros e S\'a | Dirac bracket and time dependent constraints | 11 pages, 1 figure | null | null | null | gr-qc math-ph math.MP quant-ph | http://creativecommons.org/licenses/by/4.0/ | We provide a compact derivation of the Dirac bracket and of the equations of
motion for second class constrained systems when the constraints are time
dependent. The examples of Parameterized Mechanics and of General Relativity
after gauge fixing are given, and the need for the use of time dependent gauge
fixing cond... | [
{
"created": "Tue, 21 Feb 2023 19:50:09 GMT",
"version": "v1"
}
] | 2023-02-23 | [
[
"Sá",
"Nuno Barros e",
""
]
] | We provide a compact derivation of the Dirac bracket and of the equations of motion for second class constrained systems when the constraints are time dependent. The examples of Parameterized Mechanics and of General Relativity after gauge fixing are given, and the need for the use of time dependent gauge fixing condit... |
2309.15752 | Eleftherios-Ermis Tselentis | Eleftherios-Ermis Tselentis, \"Amin Baumeler | The M\"obius game and other Bell tests for relativity | Comments welcome! | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | We derive multiparty games that, if the winning chance exceeds a certain
limit, prove the incompatibility of the parties' causal relations with any
partial order. This, in turn, means that the parties exert a back-action on the
causal relations; the causal relations are dynamical. The games turn out to be
representab... | [
{
"created": "Wed, 27 Sep 2023 16:08:13 GMT",
"version": "v1"
}
] | 2023-09-28 | [
[
"Tselentis",
"Eleftherios-Ermis",
""
],
[
"Baumeler",
"Ämin",
""
]
] | We derive multiparty games that, if the winning chance exceeds a certain limit, prove the incompatibility of the parties' causal relations with any partial order. This, in turn, means that the parties exert a back-action on the causal relations; the causal relations are dynamical. The games turn out to be representable... |
gr-qc/0703011 | Alikram Aliev | A. N. Aliev, H. Cebeci, T. Dereli | Exact Solutions in Five-Dimensional Axi-dilaton Gravity with
Euler-Poincare Term | New formulas and references added | Class.Quant.Grav.24:3425-3436,2007 | 10.1088/0264-9381/24/13/017 | null | gr-qc hep-th | null | We examine the effective field equations that are obtained from the
axi-dilaton gravity action with a second order Euler-Poincare term and a
cosmological constant in all higher dimensions. We solve these equations for
five-dimensional spacetimes possessing homogeneity and isotropy in their
three-dimensional subspaces... | [
{
"created": "Fri, 2 Mar 2007 10:06:30 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jun 2007 06:32:15 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Aliev",
"A. N.",
""
],
[
"Cebeci",
"H.",
""
],
[
"Dereli",
"T.",
""
]
] | We examine the effective field equations that are obtained from the axi-dilaton gravity action with a second order Euler-Poincare term and a cosmological constant in all higher dimensions. We solve these equations for five-dimensional spacetimes possessing homogeneity and isotropy in their three-dimensional subspaces. ... |
1510.01953 | Sumanta Chakraborty | Sumanta Chakraborty and Soumitra SenGupta | Spherically symmetric brane in a bulk of f(R) and Gauss-Bonnet Gravity | revised, 35 Pages, 3 figures | Class. Quant. Grav. 33 225001 (2016) | 10.1088/0264-9381/33/22/225001 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Effective gravitational field equations on a four dimensional brane embedded
in a five dimensional bulk have been considered. Using the Einstein-Hilbert
action along with the Gauss-Bonnet correction term, we have derived static
spherically symmetric vacuum solution to the effective field equations, first
order in the... | [
{
"created": "Tue, 6 Oct 2015 05:52:11 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Oct 2016 01:04:17 GMT",
"version": "v2"
}
] | 2016-10-21 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"SenGupta",
"Soumitra",
""
]
] | Effective gravitational field equations on a four dimensional brane embedded in a five dimensional bulk have been considered. Using the Einstein-Hilbert action along with the Gauss-Bonnet correction term, we have derived static spherically symmetric vacuum solution to the effective field equations, first order in the G... |
gr-qc/0408099 | Vitor Cardoso | Emanuele Berti, Vitor Cardoso, Jose' P. S. Lemos | Quasinormal modes and classical wave propagation in analogue black holes | 19 pages, 12 figures, ReVTeX4; v2: minor modifications and
corrections | Phys.Rev. D70 (2004) 124006 | 10.1103/PhysRevD.70.124006 | null | gr-qc astro-ph hep-ph hep-th physics.flu-dyn | null | Many properties of black holes can be studied using acoustic analogues in the
laboratory through the propagation of sound waves. We investigate in detail
sound wave propagation in a rotating acoustic (2+1)-dimensional black hole,
which corresponds to the ``draining bathtub'' fluid flow. We compute the
quasinormal mod... | [
{
"created": "Tue, 31 Aug 2004 08:19:02 GMT",
"version": "v1"
},
{
"created": "Sat, 20 Nov 2004 14:22:52 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Berti",
"Emanuele",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Lemos",
"Jose' P. S.",
""
]
] | Many properties of black holes can be studied using acoustic analogues in the laboratory through the propagation of sound waves. We investigate in detail sound wave propagation in a rotating acoustic (2+1)-dimensional black hole, which corresponds to the ``draining bathtub'' fluid flow. We compute the quasinormal mode ... |
2204.07864 | Ali \"Ovg\"un Dr. | Wajiha Javed, Muhammad Aqib and Ali \"Ovg\"un | Effect of the magnetic charge on weak deflection angle and greybody
bound of the black hole in Einstein-Gauss-Bonnet gravity | 11 pages. Accepted for publication in Physics Letters B
(https://www.sciencedirect.com/science/article/pii/S0370269322002489) | Physics Letters B 829, 137114 (2022) | 10.1016/j.physletb.2022.137114 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The objective of this paper is to analyze the weak deflection angle of
Einstein-Gauss-Bonnet gravity in the presence of plasma medium. To attain our
results, we implement the Gibbons and Werner approach and use the Gauss-Bonnet
theorem to Einstein gravity to acquire the resulting deflection angle of
photon's ray in t... | [
{
"created": "Sat, 16 Apr 2022 20:12:38 GMT",
"version": "v1"
}
] | 2022-04-28 | [
[
"Javed",
"Wajiha",
""
],
[
"Aqib",
"Muhammad",
""
],
[
"Övgün",
"Ali",
""
]
] | The objective of this paper is to analyze the weak deflection angle of Einstein-Gauss-Bonnet gravity in the presence of plasma medium. To attain our results, we implement the Gibbons and Werner approach and use the Gauss-Bonnet theorem to Einstein gravity to acquire the resulting deflection angle of photon's ray in the... |
gr-qc/0303103 | Gilberto Medeiros Kremer | G. M. Kremer | Irreversible Processes in a Universe modelled as a mixture of a
Chaplygin gas and radiation | 8 pages, 1 figure, to be published in GRG | Gen.Rel.Grav. 35 (2003) 1459-1466 | 10.1023/A:1024586719004 | null | gr-qc | null | The evolution of a Universe modelled as a mixture of a Chaplygin gas and
radiation is determined by taking into account irreversible processes. This
mixture could interpolate periods of a radiation dominated, a matter dominated
and a cosmological constant dominated Universe. The results of a Universe
modelled by this... | [
{
"created": "Wed, 26 Mar 2003 11:18:36 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Kremer",
"G. M.",
""
]
] | The evolution of a Universe modelled as a mixture of a Chaplygin gas and radiation is determined by taking into account irreversible processes. This mixture could interpolate periods of a radiation dominated, a matter dominated and a cosmological constant dominated Universe. The results of a Universe modelled by this m... |
1411.4854 | Amir M. Abbassi | Habib Abedi and Amir M. Abbassi | Gravitational constant in multiple field gravity | 13 pages,no fig., JCAP style | null | 10.1088/1475-7516/2015/05/026 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present study, we consider general form of the Lagrangian $ f(R,
\phi^{I}, X) $, that is a function of the Ricci scalar, multiple scalar fields
and non-canonical kinetic terms. We obtain the effective Newton's constant deep
inside the Hubble radius. We use Jordan and Einstein frames, and study the
conservation... | [
{
"created": "Tue, 18 Nov 2014 14:48:08 GMT",
"version": "v1"
}
] | 2015-05-27 | [
[
"Abedi",
"Habib",
""
],
[
"Abbassi",
"Amir M.",
""
]
] | In the present study, we consider general form of the Lagrangian $ f(R, \phi^{I}, X) $, that is a function of the Ricci scalar, multiple scalar fields and non-canonical kinetic terms. We obtain the effective Newton's constant deep inside the Hubble radius. We use Jordan and Einstein frames, and study the conservation o... |
1707.09814 | Donato Bini | Donato Bini, Andrea Geralico, Justin Vines | Hyperbolic scattering of spinning particles by a Kerr black hole | 12 pages, 3 figures, revtex macros | Phys. Rev. D 96, 084044 (2017) | 10.1103/PhysRevD.96.084044 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the scattering of a spinning test particle by a Kerr black
hole within the Mathisson-Papapetrou-Dixon model to linear order in spin. The
particle's spin and orbital angular momentum are taken to be aligned with the
black hole's spin. Both the particle's mass and spin length are assumed to be
small in c... | [
{
"created": "Mon, 31 Jul 2017 12:24:48 GMT",
"version": "v1"
}
] | 2018-08-29 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Vines",
"Justin",
""
]
] | We investigate the scattering of a spinning test particle by a Kerr black hole within the Mathisson-Papapetrou-Dixon model to linear order in spin. The particle's spin and orbital angular momentum are taken to be aligned with the black hole's spin. Both the particle's mass and spin length are assumed to be small in com... |
1108.2296 | Stanley P. Gudder | Stan Gudder | Discrete Quantum Gravity | 19 pages which includes 3 figures created in LaTeX | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the causal set approach to discrete quantum gravity. We begin by
describing a classical sequential growth process in which the universe grows
one element at a time in discrete steps. At each step the process has the form
of a causal set and the "completed" universe is given by a path through a
discretely g... | [
{
"created": "Wed, 10 Aug 2011 22:06:53 GMT",
"version": "v1"
}
] | 2011-08-12 | [
[
"Gudder",
"Stan",
""
]
] | We discuss the causal set approach to discrete quantum gravity. We begin by describing a classical sequential growth process in which the universe grows one element at a time in discrete steps. At each step the process has the form of a causal set and the "completed" universe is given by a path through a discretely gro... |
1502.00977 | Davood Momeni Dr | D. Momeni, R. Myrzakulov, E. G\"udekli | Cosmological viable Mimetic $f(R)$ and $f(R,T)$ theories via Noether
symmetry | Accepted in "International Journal of Geometric Methods in Modern
Physics",22 pages,no figure | Int.J.Geom.Meth.Mod.Phys. 12 (2015) no.10, 1550101 | 10.1142/S0219887815501017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extended $f(R)$ theories of gravity have been investigated from the symmetry
point of view. We briefly has been investigated Noether symmetry of two types
of extended $f(R)$ theories: $f(R,T)$ theory, in which curvature is coupled non
minimally to the trace of energy momentum tensor $T_{\mu\nu}$ and mimetic $f
(R) $ ... | [
{
"created": "Mon, 19 Jan 2015 05:02:44 GMT",
"version": "v1"
},
{
"created": "Sun, 24 May 2015 15:47:57 GMT",
"version": "v2"
}
] | 2018-10-09 | [
[
"Momeni",
"D.",
""
],
[
"Myrzakulov",
"R.",
""
],
[
"Güdekli",
"E.",
""
]
] | Extended $f(R)$ theories of gravity have been investigated from the symmetry point of view. We briefly has been investigated Noether symmetry of two types of extended $f(R)$ theories: $f(R,T)$ theory, in which curvature is coupled non minimally to the trace of energy momentum tensor $T_{\mu\nu}$ and mimetic $f (R) $ gr... |
1501.05697 | Ramon Herrera | Sergio del Campo, Carlos Gonzalez and Ramon Herrera | Power law inflation with a non-minimally coupled scalar field in light
of Planck and BICEP2 data: The exact versus slow roll results | 13 pages and 1 figure | null | 10.1007/s10509-015-2414-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study power law inflation in the context of non-minimally coupled to the
scalar curvature. We analyze the inflationary solutions under an exact analysis
and also in the slow roll approximation. In both solutions, we consider the
recent data from Planck and BICEP2 data to constraint the parameter in our
model. We f... | [
{
"created": "Fri, 23 Jan 2015 02:16:47 GMT",
"version": "v1"
}
] | 2015-08-06 | [
[
"del Campo",
"Sergio",
""
],
[
"Gonzalez",
"Carlos",
""
],
[
"Herrera",
"Ramon",
""
]
] | We study power law inflation in the context of non-minimally coupled to the scalar curvature. We analyze the inflationary solutions under an exact analysis and also in the slow roll approximation. In both solutions, we consider the recent data from Planck and BICEP2 data to constraint the parameter in our model. We fin... |
1312.3597 | Julio Oliva | Andres Anabalon, Adolfo Cisterna and Julio Oliva | Asymptotically locally AdS and flat black holes in Horndeski theory | 15 pages, 1 figure. v2: typos corrected, to appear on PRD | Phys. Rev. D 89, 084050 (2014) | 10.1103/PhysRevD.89.084050 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we construct asymptotically locally AdS and flat black holes in
the presence of a scalar field whose kinetic term is constructed out from a
linear combination of the metric and the Einstein tensor. The field equations
as well as the energy-momentum tensor are second order in the metric and the
field, th... | [
{
"created": "Thu, 12 Dec 2013 19:27:43 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Mar 2014 16:20:40 GMT",
"version": "v2"
}
] | 2014-04-23 | [
[
"Anabalon",
"Andres",
""
],
[
"Cisterna",
"Adolfo",
""
],
[
"Oliva",
"Julio",
""
]
] | In this paper we construct asymptotically locally AdS and flat black holes in the presence of a scalar field whose kinetic term is constructed out from a linear combination of the metric and the Einstein tensor. The field equations as well as the energy-momentum tensor are second order in the metric and the field, ther... |
0804.4345 | Fabrizio Tamburini | Fabrizio Tamburini (1), Bruce A. Bassett (2) and Carlo Ungarelli (3)
((1) Dept. of Astronomy University of Padova, Vicolo dell'Osservatorio 3,
Padova, Italy. (2) SAAO / UCT, Observatory Road Observatory, Cape Town, South
Africa. (3) CNR IGG Pisa, Via G. Moruzzi 1, Pisa, Italy.) | The "Quantum Mousetrap": Entangled States and Gravitational Waves | 5 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a "thought technique" for detecting Gravitational Waves using
Einstein-Podolski-Rosen photon Entangled States. GWs decohere the entangled
photon pairs, introduce a relative rotation and de-synchronize Alice and Bob's
reference frames thus reducing the measured non-locality of correlated quanta
described by... | [
{
"created": "Mon, 28 Apr 2008 08:44:27 GMT",
"version": "v1"
}
] | 2008-04-29 | [
[
"Tamburini",
"Fabrizio",
""
],
[
"Bassett",
"Bruce A.",
""
],
[
"Ungarelli",
"Carlo",
""
]
] | We propose a "thought technique" for detecting Gravitational Waves using Einstein-Podolski-Rosen photon Entangled States. GWs decohere the entangled photon pairs, introduce a relative rotation and de-synchronize Alice and Bob's reference frames thus reducing the measured non-locality of correlated quanta described by B... |
1704.01934 | Tomasz Trze\'sniewski | Jakub Mielczarek, Tomasz Trze\'sniewski | Nonlinear Field Space Cosmology | 15 pages, 1 figure, v2 presentation improved and references added | Phys. Rev. D 96, 043522 (2017) | 10.1103/PhysRevD.96.043522 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the FRW cosmological model in which the matter content of
universe (playing a role of inflaton or quintessence) is given by a novel
generalization of the massive scalar field. The latter is a scalar version of
the recently introduced Nonlinear Field Space Theory (NFST), where physical
phase space of a giv... | [
{
"created": "Thu, 6 Apr 2017 17:02:13 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Sep 2017 18:18:50 GMT",
"version": "v2"
}
] | 2017-09-05 | [
[
"Mielczarek",
"Jakub",
""
],
[
"Trześniewski",
"Tomasz",
""
]
] | We consider the FRW cosmological model in which the matter content of universe (playing a role of inflaton or quintessence) is given by a novel generalization of the massive scalar field. The latter is a scalar version of the recently introduced Nonlinear Field Space Theory (NFST), where physical phase space of a given... |
gr-qc/9902042 | Esposito Giampiero | Ivan G. Avramidi and Giampiero Esposito | Foundational Problems in Quantum Gravity | 12 pages, plain Tex, contribution to the Italian XIII National
Conference on General Relativity, Monopoli, September 1998 | null | null | DSF preprint 99/6 | gr-qc | null | Boundary conditions play a crucial role in the path-integral approach to
quantum gravity and quantum cosmology, as well as in the current attempts to
understand the one-loop semiclassical properties of quantum field theories.
Within this framework, one is led to consider boundary conditions completely
invariant under... | [
{
"created": "Sat, 13 Feb 1999 15:15:26 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Avramidi",
"Ivan G.",
""
],
[
"Esposito",
"Giampiero",
""
]
] | Boundary conditions play a crucial role in the path-integral approach to quantum gravity and quantum cosmology, as well as in the current attempts to understand the one-loop semiclassical properties of quantum field theories. Within this framework, one is led to consider boundary conditions completely invariant under i... |
1612.01272 | Jaume Haro | Llibert Arest\'e Sal\'o and Jaume de Haro | Cosmological solutions in spatially curved universes with adiabatic
particle production | 13 pages, 10 figures. Version accepted for publication in CQG | Class.Quant.Grav. 34 (2017) no.6, 065001 | 10.1088/1361-6382/aa5e14 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a qualitative and thermodynamic study of two models when one takes
into account adiabatic particle production. In the first one, there is a
constant particle production rate, which leads to solutions depicting the
current cosmic acceleration but without inflation. The other one has solutions
that unify the... | [
{
"created": "Mon, 5 Dec 2016 08:27:52 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Feb 2017 16:25:24 GMT",
"version": "v2"
}
] | 2017-03-13 | [
[
"Saló",
"Llibert Aresté",
""
],
[
"de Haro",
"Jaume",
""
]
] | We perform a qualitative and thermodynamic study of two models when one takes into account adiabatic particle production. In the first one, there is a constant particle production rate, which leads to solutions depicting the current cosmic acceleration but without inflation. The other one has solutions that unify the e... |
gr-qc/0307032 | Enric Verdaguer | B. L. Hu, E. Verdaguer | Stochastic Gravity: Theory and Applications | 75 pages, no figures, submitted to Living Reviews in Relativity | Living Rev.Rel.7:3,2004 | 10.12942/lrr-2004-3 | null | gr-qc | null | Whereas semiclassical gravity is based on the semiclassical Einstein equation
with sources given by the expectation value of the stress-energy tensor of
quantum fields, stochastic semiclassical gravity is based on the
Einstein-Langevin equation, which has in addition sources due to the noise
kernel.In the first part,... | [
{
"created": "Tue, 8 Jul 2003 15:00:51 GMT",
"version": "v1"
}
] | 2016-10-19 | [
[
"Hu",
"B. L.",
""
],
[
"Verdaguer",
"E.",
""
]
] | Whereas semiclassical gravity is based on the semiclassical Einstein equation with sources given by the expectation value of the stress-energy tensor of quantum fields, stochastic semiclassical gravity is based on the Einstein-Langevin equation, which has in addition sources due to the noise kernel.In the first part, w... |
1911.05983 | Renier Hough | Renier Hough, Amare Abebe, Stefan Ferreira | Viability tests of \textit{f(R)}-gravity models with Supernovae Type 1A
data | 15 pages, 13 figures, and 49 references. This is a re-submission [v3]
with updated references and fixed typing errors. We also added in a new
theoretical residuals plot, as well as adding two appendices to show the
mathematics that were needed. This work is based on Renier Hough's Masters
dissertation results | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we will be testing four different general \textit{f(R)}-gravity
models, two of which are the more realistic models (namely the Starobinsky and
the Hu-Sawicki models), to determine if they are viable alternative models to
pursue a more vigorous constraining test upon them. For the testing of these
models... | [
{
"created": "Thu, 14 Nov 2019 08:16:40 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Nov 2019 14:58:58 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Jun 2020 09:44:29 GMT",
"version": "v3"
}
] | 2020-06-24 | [
[
"Hough",
"Renier",
""
],
[
"Abebe",
"Amare",
""
],
[
"Ferreira",
"Stefan",
""
]
] | In this work, we will be testing four different general \textit{f(R)}-gravity models, two of which are the more realistic models (namely the Starobinsky and the Hu-Sawicki models), to determine if they are viable alternative models to pursue a more vigorous constraining test upon them. For the testing of these models, ... |
1102.2309 | Alessandro Fabbri | Alessandro Fabbri | The Hawking signal in density-density correlations in BECs | 4 pages, Contribution to the Proceedings of ERE2010 | J.Phys.Conf.Ser. 314:012029,2011 | 10.1088/1742-6596/314/1/012029 | null | gr-qc cond-mat.quant-gas hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We outline the derivation of the Hawking quanta-partner signal in
correlations, and highlight the specific application to detect it in
density-density correlations in BECs.
| [
{
"created": "Fri, 11 Feb 2011 09:55:44 GMT",
"version": "v1"
}
] | 2011-10-06 | [
[
"Fabbri",
"Alessandro",
""
]
] | We outline the derivation of the Hawking quanta-partner signal in correlations, and highlight the specific application to detect it in density-density correlations in BECs. |
1903.07473 | Theodosios Christodoulakis | T. Pailas and T. Christodoulakis | Dynamically equivalent {\Lambda}CDM equations with underlying Bianchi
Type geometry | 20 pages, 2 figures, Latex2e source file | null | 10.1088/1475-7516/2019/07/029 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Solutions have been found for gravity coupled to electromagnetic field and a
set of charged and uncharged perfect fluids for Bianchi Types VI_{(-1)}, VIII,
IX, under the primary assumption of the existence of a conformal Killing vector
field. The electromagnetic field ``absorbs'' the ``frozen'' anisotropy and the
rem... | [
{
"created": "Mon, 18 Mar 2019 14:29:18 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Aug 2019 17:54:46 GMT",
"version": "v2"
}
] | 2019-08-07 | [
[
"Pailas",
"T.",
""
],
[
"Christodoulakis",
"T.",
""
]
] | Solutions have been found for gravity coupled to electromagnetic field and a set of charged and uncharged perfect fluids for Bianchi Types VI_{(-1)}, VIII, IX, under the primary assumption of the existence of a conformal Killing vector field. The electromagnetic field ``absorbs'' the ``frozen'' anisotropy and the remai... |
gr-qc/9810011 | WU Zhong Chao | Wu Zhong Chao (Beijing Normal University) | Pair Creation of Black Holes in Anti-de Sitter Space Background (I) | 9 pages, minor change | Gen.Rel.Grav.31:223-231,1999 | 10.1023/A:1018896211493 | Beijing preprint 98-107 | gr-qc hep-th | null | For a spherically symmetric vacuum model with a negative cosmological
constant, a complex constrained instanton is considered as the seed for the
quantum pair creation of Schwarzschild-anti-de Sitter black holes. The relative
creation probability is found to be the exponential of the negative of the
black hole entrop... | [
{
"created": "Sun, 4 Oct 1998 20:22:57 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Oct 1998 19:55:54 GMT",
"version": "v2"
},
{
"created": "Fri, 9 Oct 1998 15:26:40 GMT",
"version": "v3"
},
{
"created": "Wed, 14 Oct 1998 21:12:49 GMT",
"version": "v4"
},
{
"crea... | 2008-11-26 | [
[
"Chao",
"Wu Zhong",
"",
"Beijing Normal University"
]
] | For a spherically symmetric vacuum model with a negative cosmological constant, a complex constrained instanton is considered as the seed for the quantum pair creation of Schwarzschild-anti-de Sitter black holes. The relative creation probability is found to be the exponential of the negative of the black hole entropy.... |
gr-qc/9910020 | hamid Reza Sepangi | K. Ghafoori-Tabrizi, S. S. Gousheh and H. R. Sepangi | On signature transition in Robertson-Walker cosmologies | 9 pages plus 4 postscript figures. To appear in the Int. J. Mod.
Phys. A | Int.J.Mod.Phys.A15:1521-1531,2000 | 10.1142/S0217751X00000689 | null | gr-qc hep-th | null | We analyse a classical model of gravitation coupled to a self interacting
scalar field. We show that, within the context of this model for
Robertson-Walker cosmologies, there exist solutions in the spatially non-flat
cases exhibiting transitions from a Euclidean to a Lorentzian spacetime. We
then discuss the conditio... | [
{
"created": "Wed, 6 Oct 1999 15:49:37 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Ghafoori-Tabrizi",
"K.",
""
],
[
"Gousheh",
"S. S.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | We analyse a classical model of gravitation coupled to a self interacting scalar field. We show that, within the context of this model for Robertson-Walker cosmologies, there exist solutions in the spatially non-flat cases exhibiting transitions from a Euclidean to a Lorentzian spacetime. We then discuss the conditions... |
1304.1775 | Vivien Raymond | the LIGO Scientific Collaboration, the Virgo Collaboration: J. Aasi,
J. Abadie, B. P. Abbott, R. Abbott, T. D. Abbott, M. Abernathy, T. Accadia,
F. Acernese, C. Adams, T. Adams, P. Addesso, R. Adhikari, C. Affeldt, M.
Agathos, K. Agatsuma, P. Ajith, B. Allen, A. Allocca, E. Amador Ceron, D.
Amariutei, S. B. And... | Parameter estimation for compact binary coalescence signals with the
first generation gravitational-wave detector network | 23 pages, 18 figures. LIGO Document P1200021. See the announcement
for this paper on ligo.org at:
http://www.ligo.org/science/Publication-S6PE/index.php. For a repository of
data used in the publication, go to:
https://dcc.ligo.org/LIGO-P1200021/public; Modifications thanks to referee
reports | Phys. Rev. D 88, 062001 (2013) | 10.1103/PhysRevD.88.062001 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Compact binary systems with neutron stars or black holes are one of the most
promising sources for ground-based gravitational wave detectors. Gravitational
radiation encodes rich information about source physics; thus parameter
estimation and model selection are crucial analysis steps for any detection
candidate even... | [
{
"created": "Fri, 5 Apr 2013 18:00:39 GMT",
"version": "v1"
},
{
"created": "Sat, 27 Apr 2013 20:26:47 GMT",
"version": "v2"
},
{
"created": "Sun, 11 Aug 2013 07:32:37 GMT",
"version": "v3"
},
{
"created": "Tue, 22 Oct 2013 18:28:45 GMT",
"version": "v4"
}
] | 2013-12-02 | [
[
"the LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Aasi",
"J.",
""
],
[
"Abadie",
"J.",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""... | Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model selection are crucial analysis steps for any detection candidate events... |
1605.03458 | Behnam Pourhassan | J. Sadeghi, B. Pourhassan, M. Rostami | P - V Criticality of Logarithmic Corrected Dyonic Charged AdS Black Hole | 11 pages, 5 figures. References added. Revised according to PRD
report | Phys. Rev. D 94, 064006 (2016) | 10.1103/PhysRevD.94.064006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we consider dyonic charged AdS black hole which is holographic
dual of a van der Waals fluid. We use logarithmic corrected entropy and study
thermodynamics of the black hole and show that holographic picture is still
valid. Critical behaviors and stability also discussed. Logarithmic corrections
arises... | [
{
"created": "Wed, 11 May 2016 14:33:00 GMT",
"version": "v1"
},
{
"created": "Sun, 15 May 2016 07:10:14 GMT",
"version": "v2"
},
{
"created": "Mon, 1 Aug 2016 05:57:29 GMT",
"version": "v3"
}
] | 2016-09-07 | [
[
"Sadeghi",
"J.",
""
],
[
"Pourhassan",
"B.",
""
],
[
"Rostami",
"M.",
""
]
] | In this paper, we consider dyonic charged AdS black hole which is holographic dual of a van der Waals fluid. We use logarithmic corrected entropy and study thermodynamics of the black hole and show that holographic picture is still valid. Critical behaviors and stability also discussed. Logarithmic corrections arises d... |
2210.01313 | Xiao Yan Chew | Xiao Yan Chew, Dong-han Yeom and Jose Luis Bl\'azquez-Salcedo | Properties of Scalar Hairy Black Holes and Scalarons with Asymmetric
Potential | 12 pages, 10 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this paper we study the properties of black holes and scalarons in
Einstein gravity when it is minimally coupled to a scalar field $\phi$ with an
asymmetric potential $V(\phi)$, constructed in [Phys. Rev. D \textbf{73}
(2006), 084002] a few decades ago. $V(\phi)$ has been applied in the cosmology
to describe the q... | [
{
"created": "Tue, 4 Oct 2022 02:13:25 GMT",
"version": "v1"
}
] | 2022-10-05 | [
[
"Chew",
"Xiao Yan",
""
],
[
"Yeom",
"Dong-han",
""
],
[
"Blázquez-Salcedo",
"Jose Luis",
""
]
] | In this paper we study the properties of black holes and scalarons in Einstein gravity when it is minimally coupled to a scalar field $\phi$ with an asymmetric potential $V(\phi)$, constructed in [Phys. Rev. D \textbf{73} (2006), 084002] a few decades ago. $V(\phi)$ has been applied in the cosmology to describe the qua... |
0803.0121 | Plyatsko Roman | Roman Plyatsko, Oleksandr Stefanyshyn | On common solutions of Mathisson equations under different conditions | 10 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of investigations of possible highly relativistic motions of a
spinning particle in the gravitational field, which can be described by the
Mathisson equations under different supplementary condition, we analyze the
circular orbits in a Schwarzschild field. The very orbits most clearly
demonstrate the e... | [
{
"created": "Mon, 3 Mar 2008 14:47:39 GMT",
"version": "v1"
}
] | 2008-03-04 | [
[
"Plyatsko",
"Roman",
""
],
[
"Stefanyshyn",
"Oleksandr",
""
]
] | In the context of investigations of possible highly relativistic motions of a spinning particle in the gravitational field, which can be described by the Mathisson equations under different supplementary condition, we analyze the circular orbits in a Schwarzschild field. The very orbits most clearly demonstrate the eff... |
1409.2371 | Rituparno Goswami | Rituparno Goswami, Anne Marie Nzioki, Sunil. D. Maharaj and Sushant G.
Ghosh | Collapsing spherical stars in f(R) gravity | 11 pages, 8 figures, Revtex 4, Minor changes in text, Matches the
accepted version in Physical Review D | Phys. Rev. D 90, 084011 (2014) | 10.1103/PhysRevD.90.084011 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a careful investigation of the problem of physically realistic
gravitational collapse of massive stars in f(R)-gravity. We show that the extra
matching conditions that arise in the modified gravity imposes strong
constraints on the stellar structure and thermodynamic properties. In our
opinion these constr... | [
{
"created": "Mon, 8 Sep 2014 14:40:16 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Sep 2014 14:07:50 GMT",
"version": "v2"
}
] | 2014-10-15 | [
[
"Goswami",
"Rituparno",
""
],
[
"Nzioki",
"Anne Marie",
""
],
[
"Maharaj",
"Sunil. D.",
""
],
[
"Ghosh",
"Sushant G.",
""
]
] | We perform a careful investigation of the problem of physically realistic gravitational collapse of massive stars in f(R)-gravity. We show that the extra matching conditions that arise in the modified gravity imposes strong constraints on the stellar structure and thermodynamic properties. In our opinion these constrai... |
0807.2325 | Lukas Hollenstein | Lukas Hollenstein, Francisco S. N. Lobo | Exact solutions of f(R) gravity coupled to nonlinear electrodynamics | 14 pages, 6 figures, revtex4; minor changes & details added,
conclusions remain; accepted for publication in Phys. Rev. D | Phys.Rev. D78 (2008) 124007 | 10.1103/PhysRevD.78.124007 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, exact solutions of static and spherically symmetric space-times
are analyzed in f(R) modified theories of gravity coupled to nonlinear
electrodynamics. Firstly, we restrict the metric fields to one degree of
freedom, considering the specific case of g_tt\g_rr = -1. Using the dual P
formalism of nonlinea... | [
{
"created": "Tue, 15 Jul 2008 11:25:47 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Nov 2008 16:50:53 GMT",
"version": "v2"
}
] | 2012-06-22 | [
[
"Hollenstein",
"Lukas",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | In this work, exact solutions of static and spherically symmetric space-times are analyzed in f(R) modified theories of gravity coupled to nonlinear electrodynamics. Firstly, we restrict the metric fields to one degree of freedom, considering the specific case of g_tt\g_rr = -1. Using the dual P formalism of nonlinear ... |
2302.09148 | Ernesto Contreras | Roberto Avalos, Ernesto Contreras | Quasi Normal Modes of hairy black holes at higher--order WKB approach | null | Eur. Phys. J. C 83, 155 (2023) | 10.1140/epjc/s10052-023-11288-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we implement the $13^{th}$ order semi-analytical WKB method to
explore the stability of hairy black holes obtained in the framework of
Gravitational Decoupling. In particular, we perform a detailed analysis of the
frequencies of the quasi-normal modes as a function of the primary hair of the
solutions w... | [
{
"created": "Fri, 17 Feb 2023 21:18:37 GMT",
"version": "v1"
}
] | 2023-02-21 | [
[
"Avalos",
"Roberto",
""
],
[
"Contreras",
"Ernesto",
""
]
] | In this work, we implement the $13^{th}$ order semi-analytical WKB method to explore the stability of hairy black holes obtained in the framework of Gravitational Decoupling. In particular, we perform a detailed analysis of the frequencies of the quasi-normal modes as a function of the primary hair of the solutions wit... |
gr-qc/0111057 | Antony C. Searle | Susan M Scott, Benjamin J K Evans and Antony C Searle | GRworkbench: A Computational System Based on Differential Geometry | 10 pages, 4 figures, submitted to Proceedings of the Ninth Marcel
Grossmann Meeting | null | 10.1142/9789812777386_0031 | null | gr-qc | null | We have developed a new tool for numerical work in General Relativity:
GRworkbench. While past tools have been ad hoc, GRworkbench closely follows the
framework of Differential Geometry to provide a robust and general way of
computing on analytically defined space-times. We discuss the relationship
between Differenti... | [
{
"created": "Mon, 19 Nov 2001 00:41:00 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Scott",
"Susan M",
""
],
[
"Evans",
"Benjamin J K",
""
],
[
"Searle",
"Antony C",
""
]
] | We have developed a new tool for numerical work in General Relativity: GRworkbench. While past tools have been ad hoc, GRworkbench closely follows the framework of Differential Geometry to provide a robust and general way of computing on analytically defined space-times. We discuss the relationship between Differential... |
1507.07726 | Shahab Shahidi | Zahra Haghani, Maryam Shiravand and Shahab Shahidi | Energy conditions in mimetic-$f(R)$ gravity | 14 pages | IJMPD 27 (2018) 1850049 | 10.1142/S0218271818500499 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The energy conditions of mimetic-$f(R)$ gravity theory is analyzed. We will
obtain the parameter space of the theory in some special forms of $f(R)$ in
which the self-acceleration is allowed. In this sense, the parameter space is
obtained in a way that it violates the strong energy condition while satisfying
the weak... | [
{
"created": "Tue, 28 Jul 2015 11:10:41 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Apr 2016 04:30:54 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Dec 2017 13:50:34 GMT",
"version": "v3"
}
] | 2018-02-26 | [
[
"Haghani",
"Zahra",
""
],
[
"Shiravand",
"Maryam",
""
],
[
"Shahidi",
"Shahab",
""
]
] | The energy conditions of mimetic-$f(R)$ gravity theory is analyzed. We will obtain the parameter space of the theory in some special forms of $f(R)$ in which the self-acceleration is allowed. In this sense, the parameter space is obtained in a way that it violates the strong energy condition while satisfying the weak, ... |
2009.09846 | Markus Lazar | Markus Lazar | Gradient modification of Newtonian gravity | 9 pages, 4 figures | Phys. Rev. D 102, 096002 (2020) | 10.1103/PhysRevD.102.096002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A second gradient generalization of Newtonian gravity is presented within the
framework of gradient field theory. Weak nonlocality is introduced via first
and second gradients of the gravitational field strength in the Lagrangian
density. Gradient generalizations of the Poisson equation of Newtonian
gravitation for t... | [
{
"created": "Wed, 16 Sep 2020 17:05:09 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Sep 2020 11:21:52 GMT",
"version": "v2"
},
{
"created": "Tue, 1 Dec 2020 18:21:03 GMT",
"version": "v3"
}
] | 2020-12-02 | [
[
"Lazar",
"Markus",
""
]
] | A second gradient generalization of Newtonian gravity is presented within the framework of gradient field theory. Weak nonlocality is introduced via first and second gradients of the gravitational field strength in the Lagrangian density. Gradient generalizations of the Poisson equation of Newtonian gravitation for the... |
gr-qc/0404047 | Bogdan Serbanoiu | Bogdan C. Serbanoiu | About Brill Initial Data Sets and HPC | 5 pages, 1 figure | null | null | null | gr-qc | null | The goal of this paper is to present the physics behind Brill initial data
sets as an excellent tool for numerical experiments of axisymmetric spacetimes,
data sets which are practical applications of HPC for numerical solutions of
Einstein's vacuum equations.
| [
{
"created": "Fri, 9 Apr 2004 23:01:00 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Apr 2004 15:47:07 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Serbanoiu",
"Bogdan C.",
""
]
] | The goal of this paper is to present the physics behind Brill initial data sets as an excellent tool for numerical experiments of axisymmetric spacetimes, data sets which are practical applications of HPC for numerical solutions of Einstein's vacuum equations. |
1812.09644 | Warner A. Miller | Warner A. Miller, Paul M. Alsing, Doyeol Ahn | Higher dimensional quantum communication in a curved spacetime: an
efficient simulation of the propagation of the wavefront of a photon | 20 pages, 7 figures | Proc. SPIE 10660, Quantum Information Science, Sensing, and
Computation X, 106600M (16 May 2018); | 10.1117/12.2305060 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A photon with a modulated wavefront can produce a quantum communication
channel in a larger Hilbert space. For example, higher dimensional quantum key
distribution (HD-QKD) can encode information in the transverse linear momentum
(LM) or orbital angular momentum (OAM) modes of a photon. This is markedly
different tha... | [
{
"created": "Sun, 23 Dec 2018 02:55:59 GMT",
"version": "v1"
}
] | 2018-12-27 | [
[
"Miller",
"Warner A.",
""
],
[
"Alsing",
"Paul M.",
""
],
[
"Ahn",
"Doyeol",
""
]
] | A photon with a modulated wavefront can produce a quantum communication channel in a larger Hilbert space. For example, higher dimensional quantum key distribution (HD-QKD) can encode information in the transverse linear momentum (LM) or orbital angular momentum (OAM) modes of a photon. This is markedly different than ... |
2004.01038 | Rahul Kumar | Shafqat Ul Islam, Rahul Kumar, and Sushant G. Ghosh | Gravitational lensing by black holes in the $4D$ Einstein-Gauss-Bonnet
gravity | 14 pages, 6 figures, and 2 tables. Matched with the published version | JCAP 09, 030 (2020) | 10.1088/1475-7516/2020/09/030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, a non-trivial $4D$ Einstein-Gauss-Bonnet (EGB) theory of gravity,
by rescaling the GB coupling parameter as $\alpha/(D-4)$, was formulated in
\cite{Glavan:2019inb}, which bypasses Lovelock's theorem and avoids
Ostrogradsky instability. The theory admits a static spherically symmetric
black hole, unlike $5D$... | [
{
"created": "Thu, 2 Apr 2020 14:36:08 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Apr 2020 09:18:40 GMT",
"version": "v2"
},
{
"created": "Wed, 16 Sep 2020 15:43:02 GMT",
"version": "v3"
}
] | 2020-09-17 | [
[
"Islam",
"Shafqat Ul",
""
],
[
"Kumar",
"Rahul",
""
],
[
"Ghosh",
"Sushant G.",
""
]
] | Recently, a non-trivial $4D$ Einstein-Gauss-Bonnet (EGB) theory of gravity, by rescaling the GB coupling parameter as $\alpha/(D-4)$, was formulated in \cite{Glavan:2019inb}, which bypasses Lovelock's theorem and avoids Ostrogradsky instability. The theory admits a static spherically symmetric black hole, unlike $5D$ E... |
gr-qc/0503086 | Jorge Pullin | Jorge Pullin | Matters of Gravity, the newsletter of the Topical Group on Gravitation
of the Americal Physical Society | 18 pages, 1 figure | null | null | MOG-25 | gr-qc | null | GGR News:
Message from the Chair, by Jim Isenberg
Einstein@Home, by Bernard Schutz
We hear that..., by Jorge Pullin
100 Years ago, by Jorge Pullin
Research Briefs:
What's new in LIGO, by David Shoemaker
Frame-dragging in the news in 2004, by Cliff Will
Cosmic (super)strings and LIGO, by Xavier Siemens... | [
{
"created": "Sun, 20 Mar 2005 22:16:51 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Pullin",
"Jorge",
""
]
] | GGR News: Message from the Chair, by Jim Isenberg Einstein@Home, by Bernard Schutz We hear that..., by Jorge Pullin 100 Years ago, by Jorge Pullin Research Briefs: What's new in LIGO, by David Shoemaker Frame-dragging in the news in 2004, by Cliff Will Cosmic (super)strings and LIGO, by Xavier Siemens Conference report... |
2308.00627 | Hemily Gomes Marciano Fortes | Jos\'e C. N. de Araujo, Hemily G. M. Fortes | Compact stars in $f(T) = T +\xi T^\beta$ gravity | null | The European Physical Journal C, Volume 83, article number 1168,
(2023) | 10.1140/epjc/s10052-023-12342-9 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The Teleparallel Theory is equivalent to General Relativity, but whereas in
the latter gravity has to do with curvature, in the former gravity is described
by torsion. As is well known, there is in the literature a host of alternative
theories of gravity, among them the so called extended theories, in which
additiona... | [
{
"created": "Tue, 1 Aug 2023 15:55:39 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jan 2024 18:00:29 GMT",
"version": "v2"
}
] | 2024-01-05 | [
[
"de Araujo",
"José C. N.",
""
],
[
"Fortes",
"Hemily G. M.",
""
]
] | The Teleparallel Theory is equivalent to General Relativity, but whereas in the latter gravity has to do with curvature, in the former gravity is described by torsion. As is well known, there is in the literature a host of alternative theories of gravity, among them the so called extended theories, in which additional ... |
1210.3775 | M Blagojevi\'c | Milutin Blagojevi\'c and Friedrich W. Hehl | Gauge Theories of Gravitation | Latex, 165 pages, 10 figures, a guide to gauge theories of gravity;
v3: pdf submission, v4: Latex, v5: minor corrections | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | During the last five decades, gravity, as one of the fundamental forces of
nature, has been formulated as a gauge theory of the Weyl-Cartan-Yang-Mills
type. The present text offers commentaries on the articles from the most
prominent proponents of the theory. In the early 1960s, the gauge idea was
successfully applie... | [
{
"created": "Sun, 14 Oct 2012 09:56:32 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Mar 2013 11:20:25 GMT",
"version": "v2"
},
{
"created": "Tue, 17 Apr 2018 06:12:37 GMT",
"version": "v3"
},
{
"created": "Thu, 14 Apr 2022 10:32:47 GMT",
"version": "v4"
},
{
"c... | 2022-05-10 | [
[
"Blagojević",
"Milutin",
""
],
[
"Hehl",
"Friedrich W.",
""
]
] | During the last five decades, gravity, as one of the fundamental forces of nature, has been formulated as a gauge theory of the Weyl-Cartan-Yang-Mills type. The present text offers commentaries on the articles from the most prominent proponents of the theory. In the early 1960s, the gauge idea was successfully applied ... |
1812.04846 | Cosimo Bambi | Carlos A. Benavides-Gallego, Ahmadjon Abdujabbarov, Daniele
Malafarina, Bobomurat Ahmedov, Cosimo Bambi | Charged particle motion and electromagnetic field in $\gamma$ spacetime | 14 pages, 9 figures. v2: refereed version | Phys. Rev. D 99, 044012 (2019) | 10.1103/PhysRevD.99.044012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the electromagnetic field occurring in the background of a
static, axially symmetric vacuum solution of Einstein's field equations
immersed in an external magnetic field. The solution, known as the $\gamma$
metric (or Zipoy-Voorhees), is related to the Schwarzschild spacetime through a
real positive param... | [
{
"created": "Wed, 12 Dec 2018 08:26:32 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Feb 2019 14:47:22 GMT",
"version": "v2"
}
] | 2019-02-13 | [
[
"Benavides-Gallego",
"Carlos A.",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
],
[
"Malafarina",
"Daniele",
""
],
[
"Ahmedov",
"Bobomurat",
""
],
[
"Bambi",
"Cosimo",
""
]
] | We consider the electromagnetic field occurring in the background of a static, axially symmetric vacuum solution of Einstein's field equations immersed in an external magnetic field. The solution, known as the $\gamma$ metric (or Zipoy-Voorhees), is related to the Schwarzschild spacetime through a real positive paramet... |
2312.08588 | Hengrui Zhu | Hengrui Zhu, Harrison Siegel, Keefe Mitman, Maximiliano Isi, Will M.
Farr, Michael Boyle, Nils Deppe, Lawrence E. Kidder, Sizheng Ma, Jordan
Moxon, Kyle C. Nelli, Harald P. Pfeiffer, Mark A. Scheel, Saul A. Teukolsky,
William Throwe, Vijay Varma, and Nils L. Vu | Black Hole Spectroscopy for Precessing Binary Black Hole Coalescences | Data Release and Analysis Scripts:
https://github.com/HengruiPrinceton/precession_ringdown | null | null | null | gr-qc astro-ph.CO astro-ph.SR | http://creativecommons.org/licenses/by/4.0/ | The spectroscopic study of black hole quasinormal modes in gravitational-wave
ringdown observations is hindered by our ignorance of which modes should
dominate astrophysical signals for different binary configurations, limiting
tests of general relativity and astrophysics. In this work, we present a
description of th... | [
{
"created": "Thu, 14 Dec 2023 01:19:38 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Jul 2024 20:57:03 GMT",
"version": "v2"
}
] | 2024-07-22 | [
[
"Zhu",
"Hengrui",
""
],
[
"Siegel",
"Harrison",
""
],
[
"Mitman",
"Keefe",
""
],
[
"Isi",
"Maximiliano",
""
],
[
"Farr",
"Will M.",
""
],
[
"Boyle",
"Michael",
""
],
[
"Deppe",
"Nils",
""
],
[
"Kidd... | The spectroscopic study of black hole quasinormal modes in gravitational-wave ringdown observations is hindered by our ignorance of which modes should dominate astrophysical signals for different binary configurations, limiting tests of general relativity and astrophysics. In this work, we present a description of the ... |
1307.1914 | Paul McGrath | Richard J. Epp, Robert B. Mann and Paul L. McGrath | On the Existence and Utility of Rigid Quasilocal Frames | 21 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The notion of a rigid quasilocal frame (RQF) provides a geometrically natural
way to define a system in general relativity, and a new way to analyze the
problem of motion. An RQF is defined as a two-parameter family of timelike
worldlines comprising the boundary (topologically R x S^2) of the history of a
finite spat... | [
{
"created": "Sun, 7 Jul 2013 20:56:26 GMT",
"version": "v1"
}
] | 2013-07-09 | [
[
"Epp",
"Richard J.",
""
],
[
"Mann",
"Robert B.",
""
],
[
"McGrath",
"Paul L.",
""
]
] | The notion of a rigid quasilocal frame (RQF) provides a geometrically natural way to define a system in general relativity, and a new way to analyze the problem of motion. An RQF is defined as a two-parameter family of timelike worldlines comprising the boundary (topologically R x S^2) of the history of a finite spatia... |
0905.3053 | Cenalo Vaz | Cenalo Vaz | Signatures of an Emergent Gravity from Black Hole Entropy | Fifth prize at the 2009 Gravity Research Foundation Awards for Essays
on Gravitation. 5 pages, no figures | Gen.Rel.Grav.41:2307-2311,2009 | 10.1007/s10714-009-0848-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of a thermodynamic description of horizons indicates that
spacetime has a microstructure. While the "fundamental" degrees of freedom
remain elusive, quantizing Einstein's gravity provides some clues about their
properties. A quantum AdS black hole possesses an equispaced mass spectrum,
independent of Ne... | [
{
"created": "Tue, 19 May 2009 10:07:38 GMT",
"version": "v1"
}
] | 2009-09-28 | [
[
"Vaz",
"Cenalo",
""
]
] | The existence of a thermodynamic description of horizons indicates that spacetime has a microstructure. While the "fundamental" degrees of freedom remain elusive, quantizing Einstein's gravity provides some clues about their properties. A quantum AdS black hole possesses an equispaced mass spectrum, independent of Newt... |
2301.13625 | Alexander Quintero Velez | Camilo Arias Abad, Alexander Quintero Velez and Juan Diego Velez
Caicedo | Relativity | Comments are most welcome! | null | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | These lectures notes contain an introduction to General Relativity. They are
addressed to a general mathematical audience with no specific background in
physics. The goal is to motivate and explain Einstein's theory of gravity and
discuss some of the fundamental examples.
| [
{
"created": "Sun, 29 Jan 2023 19:41:31 GMT",
"version": "v1"
}
] | 2023-02-01 | [
[
"Abad",
"Camilo Arias",
""
],
[
"Velez",
"Alexander Quintero",
""
],
[
"Caicedo",
"Juan Diego Velez",
""
]
] | These lectures notes contain an introduction to General Relativity. They are addressed to a general mathematical audience with no specific background in physics. The goal is to motivate and explain Einstein's theory of gravity and discuss some of the fundamental examples. |
2207.10808 | David Shlivko | David Shlivko | Kinetically-driven ekpyrosis | 10 pages, 4 figures, accepted for publication | Physical Review D, 106(4), 043508 (2022) | 10.1103/PhysRevD.106.043508 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We explore the possibility of a scalar field driving ekpyrotic contraction
through a non-canonical kinetic energy density rather than a negative
potential. We find that this kinetically-driven ekpyrosis ("k-ekpyrosis") can
be achieved in a variety of models, including scalar field theories with
power-law, polynomial,... | [
{
"created": "Thu, 21 Jul 2022 23:50:37 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Aug 2022 23:07:28 GMT",
"version": "v2"
}
] | 2022-08-11 | [
[
"Shlivko",
"David",
""
]
] | We explore the possibility of a scalar field driving ekpyrotic contraction through a non-canonical kinetic energy density rather than a negative potential. We find that this kinetically-driven ekpyrosis ("k-ekpyrosis") can be achieved in a variety of models, including scalar field theories with power-law, polynomial, o... |
1501.03698 | Niccol\'o Loret | Niccol\'o Loret and Leonardo Barcaroli | Rainbow metric formalism and Relative Locality | appears in Proceedings of the 13th Marcell Grossmann meeting on
General Relativity, World Scientific, Singapore, (2014) | null | 10.1142/9789814623995_0141 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/3.0/ | This proceeding is based on a talk prepared for the XIII Marcell Grossmann
meeting. We summarise some results of work in progress in collaboration with
Giovanni Amelino-Camelia about momentum dependent (Rainbow) metrics in a
Relative Locality framework and we show that this formalism is equivalent to
the Hamiltonian ... | [
{
"created": "Thu, 15 Jan 2015 14:44:11 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Loret",
"Niccoló",
""
],
[
"Barcaroli",
"Leonardo",
""
]
] | This proceeding is based on a talk prepared for the XIII Marcell Grossmann meeting. We summarise some results of work in progress in collaboration with Giovanni Amelino-Camelia about momentum dependent (Rainbow) metrics in a Relative Locality framework and we show that this formalism is equivalent to the Hamiltonian fo... |
gr-qc/0510120 | Bjorn Garbrecht | Bjorn Garbrecht and Tomislav Prokopec | Lamb Shift of Unruh Detector Levels | 20 pages | Class.Quant.Grav. 23 (2006) 3917-3934 | 10.1088/0264-9381/23/11/015 | SPIN-05/25, ITP-UU-05/31 | gr-qc | null | We argue that the energy levels of an Unruh detector experience an effect
similar to the Lamb shift in Quantum Electrodynamics. As a consequence, the
spectrum of energy levels in a curved background is different from that in flat
space. As examples, we consider a detector in an expanding Universe and in
Rindler space... | [
{
"created": "Fri, 28 Oct 2005 17:27:15 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Garbrecht",
"Bjorn",
""
],
[
"Prokopec",
"Tomislav",
""
]
] | We argue that the energy levels of an Unruh detector experience an effect similar to the Lamb shift in Quantum Electrodynamics. As a consequence, the spectrum of energy levels in a curved background is different from that in flat space. As examples, we consider a detector in an expanding Universe and in Rindler space, ... |
gr-qc/9906109 | Esposito Giampiero | Giampiero Esposito and Cosimo Stornaiolo | New Supplementary Conditions for a Non-Linear Field Theory: General
Relativity | 8 pages, plain Tex. Talk prepared for the Conference: "Nonlinearity,
integrability and all that (twenty years after needs '79)". Gallipoli, July 1
- July 10, 1999 | null | 10.1142/9789812817587_0062 | DSF preprint 99/21 | gr-qc | null | The Einstein theory of general relativity provides a peculiar example of
classical field theory ruled by non-linear partial differential equations. A
number of supplementary conditions (more frequently called gauge conditions)
have also been considered in the literature. In the present paper, starting
from the de Don... | [
{
"created": "Sat, 26 Jun 1999 14:06:34 GMT",
"version": "v1"
}
] | 2016-11-23 | [
[
"Esposito",
"Giampiero",
""
],
[
"Stornaiolo",
"Cosimo",
""
]
] | The Einstein theory of general relativity provides a peculiar example of classical field theory ruled by non-linear partial differential equations. A number of supplementary conditions (more frequently called gauge conditions) have also been considered in the literature. In the present paper, starting from the de Donde... |
gr-qc/9503004 | Dr. sayan Kar | Sayan Kar | STRINGS IN A WORMHOLE BACKGROUND | 21 pages (Revtex) | Phys.Rev. D52 (1995) 2036-2043 | 10.1103/PhysRevD.52.2036 | IP--BBSR--95/15 | gr-qc | null | Exact solutions of the string equations of motion in a specific Lorentzian
wormhole background are obtained. These include both closed and open string
configurations. Perturbations about some of these configurations are
investigated using the manifestly covariant formalism of Larsen and Frolov.
Finally, the generaliz... | [
{
"created": "Fri, 3 Mar 1995 05:30:31 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Kar",
"Sayan",
""
]
] | Exact solutions of the string equations of motion in a specific Lorentzian wormhole background are obtained. These include both closed and open string configurations. Perturbations about some of these configurations are investigated using the manifestly covariant formalism of Larsen and Frolov. Finally, the generalized... |
0808.4116 | Vyacheslav Ivanovich Dokuchaev | V. I. Dokuchaev, S. V. Chernov | Evolution of a vacuum shell in the Friedman-Schwarzschild world | 12 pages, 4 figures | Sov.Phys.JETP 107:203-211,2008 | 10.1134/S1063776108080049 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The method of an effective potential is used to investigate the possible
types of evolution of vacuum shells in the Friedman-Schwarzschild world. Such
shells are assumed to emerge during phase transitions in the early Universe.
The possible global geometries are constructed for the Friedman- Schwarzschild
worlds. App... | [
{
"created": "Fri, 29 Aug 2008 15:58:54 GMT",
"version": "v1"
}
] | 2009-11-13 | [
[
"Dokuchaev",
"V. I.",
""
],
[
"Chernov",
"S. V.",
""
]
] | The method of an effective potential is used to investigate the possible types of evolution of vacuum shells in the Friedman-Schwarzschild world. Such shells are assumed to emerge during phase transitions in the early Universe. The possible global geometries are constructed for the Friedman- Schwarzschild worlds. Appro... |
gr-qc/0512157 | Shin-ei Tsuneishi | Shin-ei Tsuneishi, Kazuya Watanabe and Tooru Tsuchida | Light propagation and gravitational lensing on the Weyl-like spacetime
in scalar-tensor theories of gravity | 38 pages, 23 figures and 1 table, Typographical errors are corrected.
To appear in Progress of Theoretical Physics | Prog.Theor.Phys. 115 (2006) 487-522 | 10.1143/PTP.115.487 | null | gr-qc astro-ph | null | We study light propagation and gravitational lensing in scalar-tensor
theories of gravity by using a static, axisymmetric exterior solution. The
solution has asymptotic flatness properties and is reduced to Voorhees's one in
the case of a constant scalar field. Our studies are done by using a technique
of the conform... | [
{
"created": "Wed, 28 Dec 2005 14:37:26 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Jan 2006 15:00:26 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Tsuneishi",
"Shin-ei",
""
],
[
"Watanabe",
"Kazuya",
""
],
[
"Tsuchida",
"Tooru",
""
]
] | We study light propagation and gravitational lensing in scalar-tensor theories of gravity by using a static, axisymmetric exterior solution. The solution has asymptotic flatness properties and is reduced to Voorhees's one in the case of a constant scalar field. Our studies are done by using a technique of the conformal... |
gr-qc/9703031 | null | Brien C. Nolan (Dublin City University) | A Characterisation of Strong Wave Tails in Curved Space-Times | 17 pages, Revtex, to appear in Classical and Quantum Gravity | Class.Quant.Grav. 14 (1997) 1295-1308 | 10.1088/0264-9381/14/5/030 | null | gr-qc | null | A characterisation of when wave tails are strong is proposed. The existence
of a curvature induced tail (i.e. a Green's function term whose support
includes the interior of the light-cone) is commonly understood to cause
backscattering of the field governed by the relevant wave equation. Strong
tails are characterise... | [
{
"created": "Wed, 12 Mar 1997 18:13:31 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Nolan",
"Brien C.",
"",
"Dublin City University"
]
] | A characterisation of when wave tails are strong is proposed. The existence of a curvature induced tail (i.e. a Green's function term whose support includes the interior of the light-cone) is commonly understood to cause backscattering of the field governed by the relevant wave equation. Strong tails are characterised ... |
0705.0740 | Farook Rahaman | F.Rahaman, M.Kalam and S.Chakraborty | Gravitational lensing by stable C-field wormhole | 15 pages, 3 figures. Submitted in Chin.J.phys. after minor revisions,
some references added | Chin.J.Phys.45:518,2007 | null | null | gr-qc | null | It has been recently shown that Hoyle-Narlikar's C-field theory admits
wormhole geometry. We derive the deflection angle of light rays caused by
C-field wormhole in the strong field limit approach of gravitational lensing
theory. The linearized stability of C-field wormhole under spherically
symmetric perturbations a... | [
{
"created": "Sat, 5 May 2007 11:18:35 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Jun 2007 09:06:05 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Rahaman",
"F.",
""
],
[
"Kalam",
"M.",
""
],
[
"Chakraborty",
"S.",
""
]
] | It has been recently shown that Hoyle-Narlikar's C-field theory admits wormhole geometry. We derive the deflection angle of light rays caused by C-field wormhole in the strong field limit approach of gravitational lensing theory. The linearized stability of C-field wormhole under spherically symmetric perturbations abo... |
gr-qc/0601019 | Yasushi Mino | Yasushi Mino | Adiabatic Expansion for Metric Perturbation and the condition to solve
the Gauge Problem for Gravitational Radiation Reaction Problem | accepted by Progress of Theoretical Physics | Prog.Theor.Phys. 115 (2006) 43-61 | 10.1143/PTP.115.43 | null | gr-qc | null | We examine the adiabatic approximation in the study of a relativistic
two-body problem with the gravitational radiation reaction. We recently pointed
out that the usual metric perturbation scheme using a perturbation of the
stress-energy tensor may not be appropriate for study of the dissipative
dynamics of the bodie... | [
{
"created": "Thu, 5 Jan 2006 08:26:56 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Mino",
"Yasushi",
""
]
] | We examine the adiabatic approximation in the study of a relativistic two-body problem with the gravitational radiation reaction. We recently pointed out that the usual metric perturbation scheme using a perturbation of the stress-energy tensor may not be appropriate for study of the dissipative dynamics of the bodies ... |
2112.06301 | Marek Li\v{s}ka | Ana Alonso-Serrano, Marek Li\v{s}ka | Thermodynamics of spacetime and unimodular gravity | 19 pages, 2 figures. Review prepared for a Special Issue of the
International Journal of Geometric Methods in Modern Physics dedicated to the
conference Geometric Foundations of Gravity 2021. Version accepted by IJGMMP | null | 10.1142/S0219887822300021 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this review we discuss emergence of unimodular gravity (or, more
precisely, Weyl transverse gravity) from thermodynamics of spacetime. By
analyzing three different ways to obtain gravitational equations of motion by
thermodynamic arguments, we show that the results point to unimodular rather
than fully diffeomorph... | [
{
"created": "Sun, 12 Dec 2021 18:48:01 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Apr 2022 09:42:57 GMT",
"version": "v2"
}
] | 2022-04-19 | [
[
"Alonso-Serrano",
"Ana",
""
],
[
"Liška",
"Marek",
""
]
] | In this review we discuss emergence of unimodular gravity (or, more precisely, Weyl transverse gravity) from thermodynamics of spacetime. By analyzing three different ways to obtain gravitational equations of motion by thermodynamic arguments, we show that the results point to unimodular rather than fully diffeomorphis... |
0707.4455 | Gilberto Medeiros Kremer | Luis P. Chimento, Fernando P. Devecchi, Monica Forte and Gilberto M.
Kremer | Phantom cosmologies and fermions | 5 pages, version which was accepted for publication in CQG | Class.Quant.Grav.25:085007,2008 | 10.1088/0264-9381/25/8/085007 | null | gr-qc | null | Form invariance transformations can be used for constructing phantom
cosmologies starting with conventional cosmological models. In this work we
reconsider the scalar field case and extend the discussion to fermionic fields,
where the "phantomization" process exhibits a new class of possible accelerated
regimes. As a... | [
{
"created": "Mon, 30 Jul 2007 17:48:33 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Mar 2008 07:13:11 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Chimento",
"Luis P.",
""
],
[
"Devecchi",
"Fernando P.",
""
],
[
"Forte",
"Monica",
""
],
[
"Kremer",
"Gilberto M.",
""
]
] | Form invariance transformations can be used for constructing phantom cosmologies starting with conventional cosmological models. In this work we reconsider the scalar field case and extend the discussion to fermionic fields, where the "phantomization" process exhibits a new class of possible accelerated regimes. As an ... |
2102.02232 | Alireza Allahyari | Alireza Allahyari, Lijing Shao | Testing No-Hair Theorem by Quasi-Periodic Oscillations: the quadrupole
of GRO J1655$-$40 | 20 pages, 8 figures, 1 table, improved version, accepted for
publication in JCAP | JCAP10(2021)003 | 10.1088/1475-7516/2021/10/003 | null | gr-qc astro-ph.CO astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We perform an observational test of no-hair theorem using quasi-periodic
oscillations within the relativistic precession model. Two well motivated
metrics we apply are Kerr-Q and Hartle-Thorne metrics in which the quadrupole
is the parameter that possibly encodes deviations from the Kerr black hole. The
expressions f... | [
{
"created": "Wed, 3 Feb 2021 19:01:00 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Oct 2021 09:16:58 GMT",
"version": "v2"
}
] | 2021-10-13 | [
[
"Allahyari",
"Alireza",
""
],
[
"Shao",
"Lijing",
""
]
] | We perform an observational test of no-hair theorem using quasi-periodic oscillations within the relativistic precession model. Two well motivated metrics we apply are Kerr-Q and Hartle-Thorne metrics in which the quadrupole is the parameter that possibly encodes deviations from the Kerr black hole. The expressions for... |
2307.07431 | Pablo Antonio Cano Molina-Ni\~nirola | Pablo A. Cano, Kwinten Fransen, Thomas Hertog, Simon Maenaut | Quasinormal modes of rotating black holes in higher-derivative gravity | v2: version accepted in PRD. Contains a new plot for the (330) modes
and we added a new comment on the accuracy of our results. We make it clear
that they are accurate enough to allow for precision tests of
higher-derivative corrections in future experiments | null | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the spectrum of linearized gravitational excitations of black
holes with substantial angular momentum in the presence of higher-derivative
corrections to general relativity. We do so perturbatively to leading order in
the higher-derivative couplings and up to order fourteen in the black hole
angular moment... | [
{
"created": "Fri, 14 Jul 2023 15:53:38 GMT",
"version": "v1"
},
{
"created": "Sun, 12 Nov 2023 12:14:24 GMT",
"version": "v2"
}
] | 2023-11-14 | [
[
"Cano",
"Pablo A.",
""
],
[
"Fransen",
"Kwinten",
""
],
[
"Hertog",
"Thomas",
""
],
[
"Maenaut",
"Simon",
""
]
] | We compute the spectrum of linearized gravitational excitations of black holes with substantial angular momentum in the presence of higher-derivative corrections to general relativity. We do so perturbatively to leading order in the higher-derivative couplings and up to order fourteen in the black hole angular momentum... |
1611.08433 | Victor Hugo Cardenas | Cuauhtemoc Campuzano, Victor H Cardenas and Ramon Herrera | Mimicking the LCDM model with Stealths | 5 pages, 4 figures | null | 10.1140/epjc/s10052-016-4546-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new cosmological model that mimics the Lambda Cold Dark Matter
by using a stealth field. This kind of field is characterized as not coupling
directly to gravity; however, it is connected to the underlying matter content
of the universe model. As is known, stealth fields do not back-react on the
space-tim... | [
{
"created": "Fri, 25 Nov 2016 12:11:20 GMT",
"version": "v1"
}
] | 2017-02-01 | [
[
"Campuzano",
"Cuauhtemoc",
""
],
[
"Cardenas",
"Victor H",
""
],
[
"Herrera",
"Ramon",
""
]
] | We present a new cosmological model that mimics the Lambda Cold Dark Matter by using a stealth field. This kind of field is characterized as not coupling directly to gravity; however, it is connected to the underlying matter content of the universe model. As is known, stealth fields do not back-react on the space-time;... |
gr-qc/0012031 | Diego F. Torres | Diego F. Torres, S. Capozziello and G. Lambiase | Supermassive boson stars: prospects for observational detection | Short paper to be published in the Proceedings of the MG 9 Meeting.
July 2000, Rome | null | null | null | gr-qc | null | In a recent work (Torres, Capozziello and Lambiase, Physical Review D62,
104012 (2000)), it was shown that a supermassive boson star could provide an
alternative model for the galactic center, usually assumed as a black hole.
Here we comment on some of the possibilities to actually detect this object,
and how can it ... | [
{
"created": "Thu, 7 Dec 2000 14:10:55 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Torres",
"Diego F.",
""
],
[
"Capozziello",
"S.",
""
],
[
"Lambiase",
"G.",
""
]
] | In a recent work (Torres, Capozziello and Lambiase, Physical Review D62, 104012 (2000)), it was shown that a supermassive boson star could provide an alternative model for the galactic center, usually assumed as a black hole. Here we comment on some of the possibilities to actually detect this object, and how can it be... |
1503.02622 | Andr\'e Gro{\ss}ardt | Andr\'e Gro{\ss}ardt | Approximations for the free evolution of self-gravitating quantum
particles | Final draft accepted for publication by Phys. Rev. A | Phys. Rev. A 94, 022101 (2016) | 10.1103/PhysRevA.94.022101 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The evolution of the centre-of-mass wave-function for a mesoscopic particle
according to the Schr\"odinger-Newton equation can be approximated by a
harmonic potential, if the wave-function is narrow compared to the size of the
particle. It was noticed by Colin et al. [Phys. Rev. A, 93, 062102 (2016)]
that, in the reg... | [
{
"created": "Mon, 9 Mar 2015 19:07:22 GMT",
"version": "v1"
},
{
"created": "Sat, 18 Jun 2016 13:53:00 GMT",
"version": "v2"
},
{
"created": "Mon, 1 Aug 2016 15:54:25 GMT",
"version": "v3"
}
] | 2016-08-02 | [
[
"Großardt",
"André",
""
]
] | The evolution of the centre-of-mass wave-function for a mesoscopic particle according to the Schr\"odinger-Newton equation can be approximated by a harmonic potential, if the wave-function is narrow compared to the size of the particle. It was noticed by Colin et al. [Phys. Rev. A, 93, 062102 (2016)] that, in the regim... |
1401.0785 | Jie-Xiong Mo | Jie-Xiong Mo, Wen-Biao Liu | P-V Criticality of Topological Black Holes in Lovelock-Born-Infeld
Gravity | 13 pages, 7 figures | Eur. Phys. J. C (2014) 74:2836 | 10.1140/epjc/s10052-014-2836-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To understand the effect of third order Lovelock gravity, $P-V$ criticality
of topological AdS black holes in Lovelock-Born-Infeld gravity is investigated.
The thermodynamics is further explored with some more extensions and details
than the former literature. A detailed analysis of the limit case
$\beta\rightarrow\i... | [
{
"created": "Sat, 4 Jan 2014 07:16:47 GMT",
"version": "v1"
}
] | 2014-04-09 | [
[
"Mo",
"Jie-Xiong",
""
],
[
"Liu",
"Wen-Biao",
""
]
] | To understand the effect of third order Lovelock gravity, $P-V$ criticality of topological AdS black holes in Lovelock-Born-Infeld gravity is investigated. The thermodynamics is further explored with some more extensions and details than the former literature. A detailed analysis of the limit case $\beta\rightarrow\inf... |
1911.01950 | Betti Hartmann | Yves Brihaye, Betti Hartmann, Nath\'alia Pio Aprile, Jon Urrestilla | Scalarization of asymptotically Anti-de Sitter black holes with
applications to holographic phase transitions | v2: discussion on Fefferman-Graham construction added; discussion on
applications to condensed matter systems added; matches version accepted for
publication in Phys. Rev.D | Phys. Rev. D 101, 124016 (2020) | 10.1103/PhysRevD.101.124016 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the spontaneous scalarization of spherically symmetric, static and
asymptotically Anti-de Sitter (aAdS) black holes in a scalar-tensor gravity
model with non-mininal coupling of the form $\phi^2\left(\alpha{\cal R} +
\gamma {\cal G}\right)$, where $\alpha$ and $\gamma$ are constants, while
${\cal R}$ and ${\... | [
{
"created": "Tue, 5 Nov 2019 17:20:53 GMT",
"version": "v1"
},
{
"created": "Tue, 12 May 2020 09:06:01 GMT",
"version": "v2"
}
] | 2020-07-01 | [
[
"Brihaye",
"Yves",
""
],
[
"Hartmann",
"Betti",
""
],
[
"Aprile",
"Nathália Pio",
""
],
[
"Urrestilla",
"Jon",
""
]
] | We study the spontaneous scalarization of spherically symmetric, static and asymptotically Anti-de Sitter (aAdS) black holes in a scalar-tensor gravity model with non-mininal coupling of the form $\phi^2\left(\alpha{\cal R} + \gamma {\cal G}\right)$, where $\alpha$ and $\gamma$ are constants, while ${\cal R}$ and ${\ca... |
2009.08467 | Rossella Gamba | Rossella Gamba, Matteo Breschi, Sebastiano Bernuzzi, Michalis Agathos
and Alessandro Nagar | Waveform systematics in the gravitational-wave inference of tidal
parameters and equation of state from binary neutron star signals | null | Phys. Rev. D 103, 124015 (2021) | 10.1103/PhysRevD.103.124015 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave signals from binary neutron star coalescences carry
information about the star's equation of state in their tidal signatures. A
major issue in the inference of the tidal parameters (or directly of the
equation of state) is the systematic error introduced by the waveform
approximants. We use a botto... | [
{
"created": "Thu, 17 Sep 2020 18:00:03 GMT",
"version": "v1"
}
] | 2021-06-16 | [
[
"Gamba",
"Rossella",
""
],
[
"Breschi",
"Matteo",
""
],
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Agathos",
"Michalis",
""
],
[
"Nagar",
"Alessandro",
""
]
] | Gravitational-wave signals from binary neutron star coalescences carry information about the star's equation of state in their tidal signatures. A major issue in the inference of the tidal parameters (or directly of the equation of state) is the systematic error introduced by the waveform approximants. We use a bottom-... |
1510.03858 | Lee Smolin | Lee Smolin | The thermodynamics of quantum spacetime histories | Latex 39 pages, 6 figures | Phys. Rev. D 96, 104042 (2017) | 10.1103/PhysRevD.96.104042 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the simplicity constraints, which define the dynamics of spin
foam models, imply, and are implied by, the first law of thermodynamics, when
the latter is applied to causal diamonds in the quantum spacetime. This result
reveals an intimate connection between the holographic nature of gravity, as
reflected... | [
{
"created": "Tue, 13 Oct 2015 20:12:48 GMT",
"version": "v1"
}
] | 2017-11-29 | [
[
"Smolin",
"Lee",
""
]
] | We show that the simplicity constraints, which define the dynamics of spin foam models, imply, and are implied by, the first law of thermodynamics, when the latter is applied to causal diamonds in the quantum spacetime. This result reveals an intimate connection between the holographic nature of gravity, as reflected b... |
0906.1318 | Juhua Chen | Juhua Chen, Yongjiu Wang | Quasinormal Modes of Scalar Field in Five-dimensional Lovelock Black
Hole Spacetime | 12 pages, 6 figures, 2 tables | Chin.Phys.B19:060401,2010 | 10.1088/1674-1056/19/6/060401 | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | In this paper using the third-order WKB approximation, a numerical method
devised by Schutz, Will and Iyer, we investigate the quasinormal frequencies of
the scalar field in the background of five-dimensional Lovelock black hole. We
find that the ultraviolet correction to Einstein theory in the Lovelock theory
makes ... | [
{
"created": "Sun, 7 Jun 2009 01:32:36 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Jun 2009 02:28:38 GMT",
"version": "v2"
},
{
"created": "Mon, 22 Jun 2009 07:28:49 GMT",
"version": "v3"
}
] | 2011-03-28 | [
[
"Chen",
"Juhua",
""
],
[
"Wang",
"Yongjiu",
""
]
] | In this paper using the third-order WKB approximation, a numerical method devised by Schutz, Will and Iyer, we investigate the quasinormal frequencies of the scalar field in the background of five-dimensional Lovelock black hole. We find that the ultraviolet correction to Einstein theory in the Lovelock theory makes th... |
gr-qc/0205049 | Ali Mostafazadeh | Ali Mostafazadeh | Probability Interpretation for Klein-Gordon Fields and the Hilbert Space
Problem in Quantum Cosmology | 11 pages, references added, slightly revised version | null | null | null | gr-qc hep-th math-ph math.MP quant-ph | null | We give an explicit construction of a positive-definite invariant
inner-product for the Klein-Gordon fields, thus solving the old problem of the
probability interpretation of Klein-Gordon fields without having to restrict to
the subspaces of the positive-frequency solutions. Our method has a much wider
domain of appl... | [
{
"created": "Mon, 13 May 2002 11:31:51 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Jul 2002 13:58:37 GMT",
"version": "v2"
},
{
"created": "Wed, 4 Dec 2002 14:49:44 GMT",
"version": "v3"
},
{
"created": "Wed, 23 Jul 2003 08:15:15 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Mostafazadeh",
"Ali",
""
]
] | We give an explicit construction of a positive-definite invariant inner-product for the Klein-Gordon fields, thus solving the old problem of the probability interpretation of Klein-Gordon fields without having to restrict to the subspaces of the positive-frequency solutions. Our method has a much wider domain of applic... |
gr-qc/9901058 | Dumitru Astefanesei | D. Astefanesei (McGill University), E. Radu (Freiburg University) | On the gravitational field of a point mass in Einstein Universe
background | 9 pages, 1 figure, major changes and much additional material since
original submission in 1999 | null | null | null | gr-qc | null | Some properties of an exact solution due to Vaidya, describing the
gravitational field produced by a point particle in the background of the
static Einstein universe are examined. The maximal analytic extension and the
nature of the singularities of the model are discussed. By using the Euclidean
approach, some quant... | [
{
"created": "Thu, 21 Jan 1999 19:56:45 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Dec 2001 22:13:05 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Astefanesei",
"D.",
"",
"McGill University"
],
[
"Radu",
"E.",
"",
"Freiburg University"
]
] | Some properties of an exact solution due to Vaidya, describing the gravitational field produced by a point particle in the background of the static Einstein universe are examined. The maximal analytic extension and the nature of the singularities of the model are discussed. By using the Euclidean approach, some quantum... |
gr-qc/9909070 | Sean Hayward | Sean A. Hayward | Gravitational waves, black holes and cosmic strings in cylindrical
symmetry | 10 pages, revtex. Published version with further details | Class.Quant.Grav. 17 (2000) 1749-1764 | 10.1088/0264-9381/17/8/302 | null | gr-qc | null | Gravitational waves in cylindrically symmetric Einstein gravity are described
by an effective energy tensor with the same form as that of a massless Klein-
Gordon field, in terms of a gravitational potential generalizing the Newtonian
potential. Energy-momentum vectors for the gravitational waves and matter are
defin... | [
{
"created": "Tue, 21 Sep 1999 18:23:12 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Apr 2000 17:25:29 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Hayward",
"Sean A.",
""
]
] | Gravitational waves in cylindrically symmetric Einstein gravity are described by an effective energy tensor with the same form as that of a massless Klein- Gordon field, in terms of a gravitational potential generalizing the Newtonian potential. Energy-momentum vectors for the gravitational waves and matter are defined... |
1112.2224 | Jennifer Driggers | Jennifer C. Driggers, Matthew Evans, Keenan Pepper, and Rana Adhikari | Active noise cancellation in a suspended interferometer | PACS numbers: 04.80.Nn, 95.55.Ym, 07.60.Ly, 42.62.Eh | null | 10.1063/1.3675891 | null | gr-qc astro-ph.IM physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate feed-forward vibration isolation on a suspended Fabry-Perot
interferometer using Wiener filtering and a variant of the common Least Mean
Square (LMS) adaptive filter algorithm. We compare the experimental results
with theoretical estimates of the cancellation efficiency. Using data from the
recent LIGO... | [
{
"created": "Fri, 9 Dec 2011 22:26:57 GMT",
"version": "v1"
}
] | 2015-06-03 | [
[
"Driggers",
"Jennifer C.",
""
],
[
"Evans",
"Matthew",
""
],
[
"Pepper",
"Keenan",
""
],
[
"Adhikari",
"Rana",
""
]
] | We demonstrate feed-forward vibration isolation on a suspended Fabry-Perot interferometer using Wiener filtering and a variant of the common Least Mean Square (LMS) adaptive filter algorithm. We compare the experimental results with theoretical estimates of the cancellation efficiency. Using data from the recent LIGO S... |
2103.08430 | Iver Brevik | I. Brevik, A. V. Timoshkin and Tanmoy Paul | The effect of thermal radiation on singularities in the dark universe | 8 pages, to appear in Int. J. Geom. Meth. Mod. Phys | Int. J. Geom. Meth. Mod. Phys. 18, No 7, 2150113 (2021) | 10.1142/S0219887821501139 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Cosmological models with an inhomogeneous viscous dark fluid, coupled with
dark matter in the Friedmann- Robertson-Walker (FRW) flat universe, are
considered. The influence of thermal effects caused by Hawking radiation on the
visible horizon is studied, in connection with the classified type I and type
III singulari... | [
{
"created": "Mon, 15 Mar 2021 14:58:35 GMT",
"version": "v1"
}
] | 2021-08-23 | [
[
"Brevik",
"I.",
""
],
[
"Timoshkin",
"A. V.",
""
],
[
"Paul",
"Tanmoy",
""
]
] | Cosmological models with an inhomogeneous viscous dark fluid, coupled with dark matter in the Friedmann- Robertson-Walker (FRW) flat universe, are considered. The influence of thermal effects caused by Hawking radiation on the visible horizon is studied, in connection with the classified type I and type III singulariti... |
2306.12064 | Andronikos Paliathanasis | Andronikos Paliathanasis | Reconstruction of $\Lambda$CDM Universe from Noether symmetries in
Chameleon gravity | 23 pages, 2 figures, to appear in Physics of the Dark Universe | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We apply the Noether symmetries to constrain the unknown functions of
chameleon gravity in the cosmological scenario of a spatially flat
Friedmann--Lema\^{\i}tre--Robertson--Walker space-time with an ideal gas. For
this gravitational model the field equations admit a point-like Lagrangian with
as unknown functions th... | [
{
"created": "Wed, 21 Jun 2023 07:21:01 GMT",
"version": "v1"
}
] | 2023-06-22 | [
[
"Paliathanasis",
"Andronikos",
""
]
] | We apply the Noether symmetries to constrain the unknown functions of chameleon gravity in the cosmological scenario of a spatially flat Friedmann--Lema\^{\i}tre--Robertson--Walker space-time with an ideal gas. For this gravitational model the field equations admit a point-like Lagrangian with as unknown functions the ... |
2206.05645 | Yang Huang | Yang Huang and Hongsheng Zhang | True gravitational atom: Spherical cloud of dilatonic black holes | 7 pages, 5 figures, accepted for publication in PRD | null | 10.1103/PhysRevD.105.124056 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Black hole as elementary particle is a fairly glamorous idea. For ordinary
black holes, a surrounding particle inevitably penetrates into the interior of
the hole since the center of the hole is an infinite potential well. For the
first time we demonstrate that an extreme dilatonic black hole in spherical
symmetry pe... | [
{
"created": "Sun, 12 Jun 2022 03:12:17 GMT",
"version": "v1"
}
] | 2022-07-13 | [
[
"Huang",
"Yang",
""
],
[
"Zhang",
"Hongsheng",
""
]
] | Black hole as elementary particle is a fairly glamorous idea. For ordinary black holes, a surrounding particle inevitably penetrates into the interior of the hole since the center of the hole is an infinite potential well. For the first time we demonstrate that an extreme dilatonic black hole in spherical symmetry perf... |
1708.02624 | Abhik Kumar Sanyal Dr. | Nayem Sk. and Abhik Kumar Sanyal | On the equivalence between different canonical forms of F(R) theory of
gravity | 10 pages, o figures | null | 10.1142/S0218271818500852 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Classical equivalence between Jordan's and Einstein's frame counterparts of
F(R) theory of gravity has recently been questioned, since the two produce
different Noether symmetries, which couldn't be translated back and forth using
transformation relations. Here we add the Hamiltonian constraint equation,
which is ess... | [
{
"created": "Sat, 5 Aug 2017 05:28:16 GMT",
"version": "v1"
}
] | 2018-06-27 | [
[
"Sk.",
"Nayem",
""
],
[
"Sanyal",
"Abhik Kumar",
""
]
] | Classical equivalence between Jordan's and Einstein's frame counterparts of F(R) theory of gravity has recently been questioned, since the two produce different Noether symmetries, which couldn't be translated back and forth using transformation relations. Here we add the Hamiltonian constraint equation, which is essen... |
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