id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1007.3040 | Francisco Lobo | Nadiezhda Montelongo Garcia, Francisco S. N. Lobo | Wormhole geometries supported by a nonminimal curvature-matter coupling | 8 pages, 3 figures. V2: 9 pages, error and typos corrected;
discussion and references added; to appear in PRD | Phys.Rev.D82:104018,2010 | 10.1103/PhysRevD.82.104018 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Wormhole geometries in curvature-matter coupled modified gravity are
explored, by considering an explicit nonminimal coupling between an arbitrary
function of the scalar curvature, R, and the Lagrangian density of matter. It
is the effective stress-energy tensor containing the coupling between matter
and the higher o... | [
{
"created": "Sun, 18 Jul 2010 21:25:29 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Oct 2010 21:20:30 GMT",
"version": "v2"
}
] | 2010-11-09 | [
[
"Garcia",
"Nadiezhda Montelongo",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | Wormhole geometries in curvature-matter coupled modified gravity are explored, by considering an explicit nonminimal coupling between an arbitrary function of the scalar curvature, R, and the Lagrangian density of matter. It is the effective stress-energy tensor containing the coupling between matter and the higher ord... |
1301.3049 | Lorenzo Sebastiani | K. Bamba (1), A. Lopez-Revelles (2, 5), R. Myrzakulov (6), S.D.
Odintsov (2, 3, 4, 6) and L. Sebastiani (5, 6) ((1) KMI, Nagoya University,
Nagoya, Japan, (2) ICE/CSIC-IEEC, Bellaterram, Barcelona, Spain, (3) ICREA,
Barcelona, Spain, (4) TSPU, Tomsk, Russia (5) Dipartimento di Fisica,
Universit`a di Trento, Ita... | The universe evolution in exponential $F(R)$-gravity | Proceedings of QFTG2013, published in TSPU Bulletin 3 (128), 2012, n
13 p.19-24 | TSPU Bulletin 2012 (2012) 13, 22-27 | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A generic feature of viable exponential $F(R)$-gravity is investigated. An
additional modification to stabilize the effective dark energy oscillations
during matter era is proposed and applied to two viable models. An analysis on
the future evolution of the universe is performed. Furthermore, a unified model
for earl... | [
{
"created": "Mon, 14 Jan 2013 16:46:27 GMT",
"version": "v1"
}
] | 2015-09-21 | [
[
"Bamba",
"K.",
""
],
[
"Lopez-Revelles",
"A.",
""
],
[
"Myrzakulov",
"R.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Sebastiani",
"L.",
""
]
] | A generic feature of viable exponential $F(R)$-gravity is investigated. An additional modification to stabilize the effective dark energy oscillations during matter era is proposed and applied to two viable models. An analysis on the future evolution of the universe is performed. Furthermore, a unified model for early ... |
gr-qc/0504068 | Leonardo Gualtieri | Omar Benhar, Valeria Ferrari, Leonardo Gualtieri, Stefania Marassi | Perturbative approach to the structure of rapidly rotating neutron stars | 17 pages, 5 figures, minor changes to match version accepted by Phys.
Rev. D | Phys.Rev. D72 (2005) 044028 | 10.1103/PhysRevD.72.044028 | null | gr-qc astro-ph | null | We construct models of rotating stars using the perturbative approach
introduced by J. Hartle in 1967, and a set of equations of state proposed to
model hadronic interactions in the inner core of neutron stars. We integrate
the equations of stellar structure to third order in the angular velocity and
show, comparing ... | [
{
"created": "Fri, 15 Apr 2005 11:38:37 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Aug 2005 12:54:57 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Benhar",
"Omar",
""
],
[
"Ferrari",
"Valeria",
""
],
[
"Gualtieri",
"Leonardo",
""
],
[
"Marassi",
"Stefania",
""
]
] | We construct models of rotating stars using the perturbative approach introduced by J. Hartle in 1967, and a set of equations of state proposed to model hadronic interactions in the inner core of neutron stars. We integrate the equations of stellar structure to third order in the angular velocity and show, comparing ou... |
2301.12370 | Omar Mustafa | Omar Mustafa | PDM KG-Coulombic particles in cosmic string rainbow gravity spacetime
and a uniform magnetic field | 14 pages, 8 figures. arXiv admin note: substantial text overlap with
arXiv:2301.05464 | Phys. Lett. B 839 (2023) 137793 | 10.1016/j.physletb.2023.137793 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | Klein-Gordon (KG) particles in cosmic string rainbow gravity spacetime and a
uniform magnetic field are studied in the context of the so called,
metaphorically speaking, position-dependent mass (PDM) settings. We show that
the corresponding KG-equation collapses into a two-dimensional radial
Schr\"{o}dinger-Coulomb l... | [
{
"created": "Sun, 29 Jan 2023 06:16:48 GMT",
"version": "v1"
}
] | 2023-04-17 | [
[
"Mustafa",
"Omar",
""
]
] | Klein-Gordon (KG) particles in cosmic string rainbow gravity spacetime and a uniform magnetic field are studied in the context of the so called, metaphorically speaking, position-dependent mass (PDM) settings. We show that the corresponding KG-equation collapses into a two-dimensional radial Schr\"{o}dinger-Coulomb lik... |
2305.11224 | Dongjun Li | Mathew W. Bub, Yanbei Chen, Yufeng Du, Dongjun Li, Yiwen Zhang,
Kathryn M. Zurek | Quantum Gravity Background in Next-Generation Gravitational Wave
Detectors | 19 pages, 9 figures | null | null | CALT-TH-2023-012 | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effects of geontropic vacuum fluctuations in quantum gravity on
next-generation terrestrial gravitational wave detectors. If the VZ effect
proposed in Ref. [1], as modeled in Refs. [2, 3], appears in the upcoming
GQuEST experiment, we show that it will be a large background for astrophysical
gravitationa... | [
{
"created": "Thu, 18 May 2023 18:00:05 GMT",
"version": "v1"
}
] | 2023-05-22 | [
[
"Bub",
"Mathew W.",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Du",
"Yufeng",
""
],
[
"Li",
"Dongjun",
""
],
[
"Zhang",
"Yiwen",
""
],
[
"Zurek",
"Kathryn M.",
""
]
] | We study the effects of geontropic vacuum fluctuations in quantum gravity on next-generation terrestrial gravitational wave detectors. If the VZ effect proposed in Ref. [1], as modeled in Refs. [2, 3], appears in the upcoming GQuEST experiment, we show that it will be a large background for astrophysical gravitational ... |
0706.2749 | Khireddine Nouicer | Khireddine Nouicer | Black holes thermodynamics to all orders in the Planck length in extra
dimensions | 21 pages, 6 figures, 1 table; Figure 2 replaced and section 4
improved | Class.Quant.Grav.24:5917-5934,2007; Erratum-ibid.24:6435,2007 | 10.1088/0264-9381/24/23/014 10.1088/0264-9381/24/24/C02 | null | gr-qc | null | We investigate the effects to all orders in the Planck length, from a
generalized uncertainty principle, on the thermodynamic parameters of radiating
Schwarzschild black holes in a scenario with large extra dimesions. We show
that black holes in this framework are hotter, decay faster and are less
classical objects. ... | [
{
"created": "Tue, 19 Jun 2007 09:44:51 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Nov 2007 11:57:33 GMT",
"version": "v2"
},
{
"created": "Thu, 22 Nov 2007 12:20:45 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Nouicer",
"Khireddine",
""
]
] | We investigate the effects to all orders in the Planck length, from a generalized uncertainty principle, on the thermodynamic parameters of radiating Schwarzschild black holes in a scenario with large extra dimesions. We show that black holes in this framework are hotter, decay faster and are less classical objects. Pa... |
1602.00851 | Ichiro Oda | Ichiro Oda | Induced Gravity from Curvature Density Preserving Diffeomorphisms | 8 pages | null | null | DPUR/TH/46 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct not only an induced gravity model with the restricted
diffeomorphisms, that is, transverse diffeomorphisms which preserves the
curvature density, but also that with the full diffeomorphisms. By solving the
equations of motion, it turns out that these models produce Einstein's
equations with a certain New... | [
{
"created": "Tue, 2 Feb 2016 09:39:53 GMT",
"version": "v1"
}
] | 2016-02-03 | [
[
"Oda",
"Ichiro",
""
]
] | We construct not only an induced gravity model with the restricted diffeomorphisms, that is, transverse diffeomorphisms which preserves the curvature density, but also that with the full diffeomorphisms. By solving the equations of motion, it turns out that these models produce Einstein's equations with a certain Newto... |
1707.06458 | Katherine Jones-Smith | Lillie Ogden, Katherine Jones-Smith, Harsh Mathur and Kevin Rovelli | An Electrostatic Analogy for Symmetron Gravity | Matches journal version; notably this version has a clarified
discussion of the possibility of a net repulsive force in Section II F | Phys. Rev. D 96, 124029 (2017) | 10.1103/PhysRevD.96.124029 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The symmetron model is a scalar-tensor theory of gravity with a screening
mechanism that suppresses the effect of the symmetron field at high densities
characteristic of the solar system and laboratory scales but allows it to act
with gravitational strength at low density on the cosmological scale. We
elucidate the s... | [
{
"created": "Wed, 19 Jul 2017 16:10:53 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Aug 2017 03:46:42 GMT",
"version": "v2"
},
{
"created": "Sun, 31 Dec 2017 23:32:23 GMT",
"version": "v3"
}
] | 2018-01-03 | [
[
"Ogden",
"Lillie",
""
],
[
"Jones-Smith",
"Katherine",
""
],
[
"Mathur",
"Harsh",
""
],
[
"Rovelli",
"Kevin",
""
]
] | The symmetron model is a scalar-tensor theory of gravity with a screening mechanism that suppresses the effect of the symmetron field at high densities characteristic of the solar system and laboratory scales but allows it to act with gravitational strength at low density on the cosmological scale. We elucidate the scr... |
1304.4297 | Jos\'e Villanueva PhD | Marco Olivares, Germ\'an Rojas, Yerko V\'asquez and J. R. Villanueva | Particles motion on topological Lifshitz black holes in 3+1 dimensions | 8 figures | null | 10.1007/s10509-013-1496-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper we study the causal structure of a topological black
hole presented by Mann R. B. JHEP 06, 075 (2009) by mean the standard
Lagrangian procedure, which allow us analyze qualitatively the behavior of test
particles using the effective potential. Then, the geodesic motion of massive
and massless par... | [
{
"created": "Mon, 15 Apr 2013 23:46:39 GMT",
"version": "v1"
}
] | 2013-06-26 | [
[
"Olivares",
"Marco",
""
],
[
"Rojas",
"Germán",
""
],
[
"Vásquez",
"Yerko",
""
],
[
"Villanueva",
"J. R.",
""
]
] | In the present paper we study the causal structure of a topological black hole presented by Mann R. B. JHEP 06, 075 (2009) by mean the standard Lagrangian procedure, which allow us analyze qualitatively the behavior of test particles using the effective potential. Then, the geodesic motion of massive and massless parti... |
gr-qc/0404125 | Valerii Dryuma sem | V.Dryuma | On the Riemann Extension of the Schwarzschild Metric | 12 pages | Bul.Acad.Sti.Rep.Moldova (Fiz.Teh.) 3 (2003) 92-103 | null | null | gr-qc | null | Some solutions of the Einstein equations for the eight-dimensional Riemann
extension of the classical four-dimensional Schwarzschild metric are
considered.
| [
{
"created": "Fri, 30 Apr 2004 08:20:38 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Dryuma",
"V.",
""
]
] | Some solutions of the Einstein equations for the eight-dimensional Riemann extension of the classical four-dimensional Schwarzschild metric are considered. |
1602.04395 | Yen Chin Ong | Yen Chin Ong | Black Hole: The Interior Spacetime | Proceedings for the 2nd LeCosPA Symposium: "Everything about Gravity:
Celebrating the Centenary of Einstein's General Relativity", based on a talk
given on 17 December 2015, Taipei | null | 10.1142/9789813203952_0081 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The information loss paradox is often discussed from the perspective of the
observers who stay outside of a black hole. However, the interior spacetime of
a black hole can be rather nontrivial. We discuss the open problems regarding
the volume of a black hole, and whether it plays any role in information
storage. We ... | [
{
"created": "Sat, 13 Feb 2016 22:49:38 GMT",
"version": "v1"
}
] | 2019-02-27 | [
[
"Ong",
"Yen Chin",
""
]
] | The information loss paradox is often discussed from the perspective of the observers who stay outside of a black hole. However, the interior spacetime of a black hole can be rather nontrivial. We discuss the open problems regarding the volume of a black hole, and whether it plays any role in information storage. We al... |
gr-qc/0507079 | Serguei Krasnikov | S. Krasnikov | Evaporation induced traversability of the Einstein--Rosen wormhole | v.2 A bit of discussion has been added and a few references v.3
Insignificant changes to match the published version | Phys.Rev. D73 (2006) 084006 | 10.1103/PhysRevD.73.084006 | null | gr-qc astro-ph hep-th | null | Suppose, the Universe comes into existence (as classical spacetime) already
with an empty spherically symmetric macroscopic wormhole present in it.
Classically the wormhole would evolve into a part of the Schwarzschild space
and thus would not allow any signal to traverse it. I consider semiclassical
corrections to t... | [
{
"created": "Mon, 18 Jul 2005 22:40:24 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Dec 2005 17:44:01 GMT",
"version": "v2"
},
{
"created": "Fri, 10 Nov 2006 23:24:00 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Krasnikov",
"S.",
""
]
] | Suppose, the Universe comes into existence (as classical spacetime) already with an empty spherically symmetric macroscopic wormhole present in it. Classically the wormhole would evolve into a part of the Schwarzschild space and thus would not allow any signal to traverse it. I consider semiclassical corrections to tha... |
gr-qc/0002073 | Sawa Manoff | S. Manoff | (^-L_n,g)-spaces. Length of a vector field and the angle between two
vector fields | 12 pages, LaTeX 2.09 | null | null | null | gr-qc | null | The notions of length of a vector field and cosine of the angle between two
vector fields over a differentiable manifold with contravariant and covariant
affine connections and metrics are introduced and considered. The change of the
length of a vector field and of the angle between two vector fields along a
contrava... | [
{
"created": "Tue, 22 Feb 2000 12:32:20 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Manoff",
"S.",
""
]
] | The notions of length of a vector field and cosine of the angle between two vector fields over a differentiable manifold with contravariant and covariant affine connections and metrics are introduced and considered. The change of the length of a vector field and of the angle between two vector fields along a contravari... |
1212.6095 | Kostiantyn Ropotenko | K. Ropotenko | Black hole motion in Euclidean space as a diffusion process II | 5 pages, no figures; v3: a Kerr-Newman black holea is described by
the canonical density matrix for a particle moving in a potential, not by the
grand canonical density matrix; title, abstract and text slightly changed;
results remains unchanged | Phys. Rev. D 87, 044037 (2013) | 10.1103/PhysRevD.87.044037 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A diffusion equation approach to black hole thermodynamics in Euclidean
sector is proposed. A diffusion equation for a generic in Euclidean sector is
derived from the Bloch equation. Black hole thermodynamics is also derived and
it is found, in particular, that the entropy of a generic Kerr-Newman black
hole is the s... | [
{
"created": "Tue, 25 Dec 2012 22:50:44 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Dec 2012 17:47:20 GMT",
"version": "v2"
},
{
"created": "Mon, 21 Jan 2013 14:21:33 GMT",
"version": "v3"
}
] | 2013-03-26 | [
[
"Ropotenko",
"K.",
""
]
] | A diffusion equation approach to black hole thermodynamics in Euclidean sector is proposed. A diffusion equation for a generic in Euclidean sector is derived from the Bloch equation. Black hole thermodynamics is also derived and it is found, in particular, that the entropy of a generic Kerr-Newman black hole is the sam... |
2302.14641 | Hebin Zheng | He-Bin Zheng, Ping-Hui Mou, Yun-Xian Chen and Guo-Ping Li | Shadow Thermodynamics of AdS Black Hole with the Nonlinear
Electrodynamics Term | 17 pages, 21 figures | null | 10.1088/1674-1056/acc806 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have creatively employed the shadow radius to study the
thermodynamics of a charged AdS black hole with a nonlinear
electrodynamics(NLED) term. First, the connection between the shadow radius and
event horizon is constructed with the aid of the geodesic analysis. It turns
out that the black hole sha... | [
{
"created": "Mon, 27 Feb 2023 11:51:49 GMT",
"version": "v1"
}
] | 2023-08-16 | [
[
"Zheng",
"He-Bin",
""
],
[
"Mou",
"Ping-Hui",
""
],
[
"Chen",
"Yun-Xian",
""
],
[
"Li",
"Guo-Ping",
""
]
] | In this paper, we have creatively employed the shadow radius to study the thermodynamics of a charged AdS black hole with a nonlinear electrodynamics(NLED) term. First, the connection between the shadow radius and event horizon is constructed with the aid of the geodesic analysis. It turns out that the black hole shado... |
gr-qc/9706010 | Nils Andersson | Nils Andersson and Kostas D. Kokkotas | Pulsation modes for increasingly relativistic polytropes | submitted to MNRAS | Mon.Not.Roy.Astron.Soc. 297 (1998) 493 | 10.1046/j.1365-8711.1998.01541.x | null | gr-qc | null | We present the results of a numerical study of the fluid $f$, $p$ and the
gravitational $w$ modes for increasingly relativistic nonrotating polytropes.
The results for $f$ and $w$-modes are in good agreement with previous data for
uniform density stars, which supports an understanding of the nature of the
gravitation... | [
{
"created": "Tue, 3 Jun 1997 15:09:00 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Andersson",
"Nils",
""
],
[
"Kokkotas",
"Kostas D.",
""
]
] | We present the results of a numerical study of the fluid $f$, $p$ and the gravitational $w$ modes for increasingly relativistic nonrotating polytropes. The results for $f$ and $w$-modes are in good agreement with previous data for uniform density stars, which supports an understanding of the nature of the gravitational... |
2406.05771 | Gabriel Farrugia | Gabriel Farrugia, Carlos Gafa', Jackson Levi Said | White Dwarf Envelops and Temperature Corrections in Exponential $f(T)$
Gravity | 14 pages, 7 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Compact stars have long served as a test bed of gravitational models and
their coupling with stellar matter. In this work, we explore the behavior of an
exponential model in f(T) gravity through the Tolman-Oppenheimer-Volkoff
equation. This is performed for different envelope thicknesses. Finally,
constraints on the ... | [
{
"created": "Sun, 9 Jun 2024 13:03:14 GMT",
"version": "v1"
}
] | 2024-06-11 | [
[
"Farrugia",
"Gabriel",
""
],
[
"Gafa'",
"Carlos",
""
],
[
"Said",
"Jackson Levi",
""
]
] | Compact stars have long served as a test bed of gravitational models and their coupling with stellar matter. In this work, we explore the behavior of an exponential model in f(T) gravity through the Tolman-Oppenheimer-Volkoff equation. This is performed for different envelope thicknesses. Finally, constraints on the mo... |
2209.01186 | Daniel Vanzella | Daniel A. T. Vanzella | Gravity theories with local energy-momentum exchange: a closer look at
Rastall-like gravity | 21 pages, 11 figures. New version: Title slightly changed; revised
(particularly Sec. IV) to make it clearer that the model is not equivalent to
Rastall's original theory and how it avoids the criticisms which are used to
dismiss the latter | null | 10.1088/1361-6382/ace58a | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Einstein's famous equivalence principle is certainly one of the most striking
features of the gravitational interaction. In a strict reading, it states that
the effects of gravity can be made to disappear $locally$ by a convenient
choice of reference frame. As a consequence, no covariantly-defined
gravitational force... | [
{
"created": "Fri, 2 Sep 2022 17:31:51 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Feb 2023 12:57:15 GMT",
"version": "v2"
}
] | 2023-08-02 | [
[
"Vanzella",
"Daniel A. T.",
""
]
] | Einstein's famous equivalence principle is certainly one of the most striking features of the gravitational interaction. In a strict reading, it states that the effects of gravity can be made to disappear $locally$ by a convenient choice of reference frame. As a consequence, no covariantly-defined gravitational force s... |
1210.0396 | Supriya Pan | Supriya Pan, Subhra Bhattacharya, and Subenoy Chakraborty | An analytic model for interacting dark energy and its observational
constraints | 14 pages, 7 figures, Published version | Mon. Not. R. Astron. Soc, 452, 3038-3046 (2015) | 10.1093/mnras/stv1495 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper deals with a theoretical model for interacting dark energy. The
interaction between the cold dark matter (dust) and the dark energy has been
assumed to be non-gravitational in nature. Exact analytic cosmological
solutions are obtained both for constant and variable equation of state for
dark energy. It is f... | [
{
"created": "Fri, 28 Sep 2012 05:28:30 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Nov 2012 13:25:39 GMT",
"version": "v2"
},
{
"created": "Thu, 14 Feb 2013 12:14:40 GMT",
"version": "v3"
},
{
"created": "Wed, 2 Apr 2014 06:48:48 GMT",
"version": "v4"
},
{
"cr... | 2015-07-31 | [
[
"Pan",
"Supriya",
""
],
[
"Bhattacharya",
"Subhra",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | The paper deals with a theoretical model for interacting dark energy. The interaction between the cold dark matter (dust) and the dark energy has been assumed to be non-gravitational in nature. Exact analytic cosmological solutions are obtained both for constant and variable equation of state for dark energy. It is fou... |
0902.0697 | Tomasz Pawlowski | David Brizuela, Guillermo A. Mena Marugan, Tomasz Pawlowski | Big Bounce and inhomogeneities | RevTex4, 4 pages, 2 figures | Class.Quant.Grav.27:052001,2010 | 10.1088/0264-9381/27/5/052001 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dynamics of an inhomogeneous universe is studied with the methods of Loop
Quantum Cosmology as an example of the quantization of vacuum cosmological
spacetimes containing gravitational waves (Gowdy spacetimes). The analysis
performed at the effective level shows that: (i) The initial Big Bang
singularity is repla... | [
{
"created": "Wed, 4 Feb 2009 14:24:49 GMT",
"version": "v1"
}
] | 2010-02-17 | [
[
"Brizuela",
"David",
""
],
[
"Marugan",
"Guillermo A. Mena",
""
],
[
"Pawlowski",
"Tomasz",
""
]
] | The dynamics of an inhomogeneous universe is studied with the methods of Loop Quantum Cosmology as an example of the quantization of vacuum cosmological spacetimes containing gravitational waves (Gowdy spacetimes). The analysis performed at the effective level shows that: (i) The initial Big Bang singularity is replace... |
1904.05652 | Zhi-Peng Li | Zhi-Peng Li and Yun-Song Piao | Mixing of gravitational wave echoes | 18 pages, 10 figures | Phys. Rev. D 100, 044023 (2019) | 10.1103/PhysRevD.100.044023 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave (GW) echoes, if they exist, would be a probe to the
near-horizon quantum structure of black hole (BH), which has motivated the
searching for the echo signals in GW data. We point out that the echo
phenomenology related with the potential structure might be not so simple as
expected. In particular, ... | [
{
"created": "Thu, 11 Apr 2019 12:10:13 GMT",
"version": "v1"
}
] | 2019-08-21 | [
[
"Li",
"Zhi-Peng",
""
],
[
"Piao",
"Yun-Song",
""
]
] | Gravitational wave (GW) echoes, if they exist, would be a probe to the near-horizon quantum structure of black hole (BH), which has motivated the searching for the echo signals in GW data. We point out that the echo phenomenology related with the potential structure might be not so simple as expected. In particular, if... |
1403.7377 | Clifford M. Will | Clifford M. Will | The Confrontation between General Relativity and Experiment | 113 pages, 10 figures, an update of the 2006 Living Review
arXiv:gr-qc/0510072 ; submitted to Living Reviews in Relativity | Living Rev. Relativity 17 (2014), 4 | 10.12942/lrr-2014-4 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The status of experimental tests of general relativity and of theoretical
frameworks for analyzing them are reviewed and updated. Einstein's equivalence
principle (EEP) is well supported by experiments such as the Eotvos experiment,
tests of local Lorentz invariance and clock experiments. Ongoing tests of EEP
and of ... | [
{
"created": "Fri, 28 Mar 2014 14:04:31 GMT",
"version": "v1"
}
] | 2014-08-06 | [
[
"Will",
"Clifford M.",
""
]
] | The status of experimental tests of general relativity and of theoretical frameworks for analyzing them are reviewed and updated. Einstein's equivalence principle (EEP) is well supported by experiments such as the Eotvos experiment, tests of local Lorentz invariance and clock experiments. Ongoing tests of EEP and of th... |
gr-qc/0408028 | Ralf Schutzhold | G\"unter Plunien, Marcus Ruser, and Ralf Sch\"utzhold | A relativistic toy model for back-reaction | 8 pages RevTeX, 4 figures | Class.Quant.Grav.24:4361-4376,2007 | 10.1088/0264-9381/24/17/006 | null | gr-qc quant-ph | null | We consider a quantized massless and minimally coupled scalar field on a
circular closed string with a time-dependent radius $R(t)$, whose undisturbed
dynamics is governed by the Nambu-Goto action. Within the semi-classical
treatment, the back-reaction of the quantum field onto the string dynamics is
taken into accou... | [
{
"created": "Tue, 10 Aug 2004 16:50:47 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Plunien",
"Günter",
""
],
[
"Ruser",
"Marcus",
""
],
[
"Schützhold",
"Ralf",
""
]
] | We consider a quantized massless and minimally coupled scalar field on a circular closed string with a time-dependent radius $R(t)$, whose undisturbed dynamics is governed by the Nambu-Goto action. Within the semi-classical treatment, the back-reaction of the quantum field onto the string dynamics is taken into account... |
2309.11958 | Syed Masood A. S. Bukhari | Syed Masood A. S. Bukhari and Li-Gang Wang | Seeing dark matter via acceleration radiation | 8 pages, 6 figures | Phys. Rev. D 109 (2024),04 045009 | 10.1103/PhysRevD.109.045009 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Despite constituting a noteworthy $\sim 27\%$ share of the total energy
budget of our Universe, dark matter (DM) has thus far eluded direct
observations. Owing to its pervasive nature, there is a sincere expectation
that astrophysical black holes (BHs) encompassed by DM should leave distinctive
imprints on the gravit... | [
{
"created": "Thu, 21 Sep 2023 10:20:51 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Oct 2023 06:07:03 GMT",
"version": "v2"
},
{
"created": "Sun, 18 Feb 2024 14:01:07 GMT",
"version": "v3"
}
] | 2024-02-20 | [
[
"Bukhari",
"Syed Masood A. S.",
""
],
[
"Wang",
"Li-Gang",
""
]
] | Despite constituting a noteworthy $\sim 27\%$ share of the total energy budget of our Universe, dark matter (DM) has thus far eluded direct observations. Owing to its pervasive nature, there is a sincere expectation that astrophysical black holes (BHs) encompassed by DM should leave distinctive imprints on the gravitat... |
0710.4445 | A. I. Nikishov | A.I.Nikishov | On two pictures in the heuristic approach to gravity | 4 pages | null | null | null | gr-qc | null | We examine the heuristic approach to constant gravitational field by Dehnen,
H\"onl and Westpfahl, extending it everywhere beyond linear approximation. Then
it becomes flexible to accommodate possible modifications of General
Relativity. We have found that two pictures introduced in the related paper by
Thirring are ... | [
{
"created": "Wed, 24 Oct 2007 12:08:16 GMT",
"version": "v1"
}
] | 2007-10-25 | [
[
"Nikishov",
"A. I.",
""
]
] | We examine the heuristic approach to constant gravitational field by Dehnen, H\"onl and Westpfahl, extending it everywhere beyond linear approximation. Then it becomes flexible to accommodate possible modifications of General Relativity. We have found that two pictures introduced in the related paper by Thirring are he... |
1201.6414 | Ben Whale | B. E. Whale | The dependence of the abstract boundary classification on a set of
curves II: How the classification changes when the bounded parameter property
satisfying set of curves changes | 24 pages, 6 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The abstract boundary uses sets of curves with the bounded parameter property
(b.p.p.) to classify the elements of the abstract boundary into regular points,
singular points, points at infinity and so on. Building on the material of Part
one of this two part series, we show how this classification changes when the
se... | [
{
"created": "Tue, 31 Jan 2012 01:36:04 GMT",
"version": "v1"
}
] | 2012-02-01 | [
[
"Whale",
"B. E.",
""
]
] | The abstract boundary uses sets of curves with the bounded parameter property (b.p.p.) to classify the elements of the abstract boundary into regular points, singular points, points at infinity and so on. Building on the material of Part one of this two part series, we show how this classification changes when the set ... |
1201.4545 | \"Ozg\"ur Akarsu | Ozgur Akarsu, Tekin Dereli | A four-dimensional {\Lambda}CDM-type cosmological model induced from
higher dimensions using a kinematical constraint | 12 pages, 8 figures; matches the version published in General
Relativity and Gravitation | General Relativity and Gravitation 45 (2013) 1211-1226 | 10.1007/s10714-013-1521-1 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A class of cosmological solutions of higher dimensional Einstein field
equations with the energy-momentum tensor of a homogeneous, isotropic fluid as
the source are considered with an anisotropic metric that includes the direct
sum of a 3-dimensional (physical, flat) external space metric and an
n-dimensional (compac... | [
{
"created": "Sun, 22 Jan 2012 09:47:57 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Jan 2013 18:01:31 GMT",
"version": "v2"
},
{
"created": "Sun, 31 Mar 2013 19:58:58 GMT",
"version": "v3"
}
] | 2013-10-24 | [
[
"Akarsu",
"Ozgur",
""
],
[
"Dereli",
"Tekin",
""
]
] | A class of cosmological solutions of higher dimensional Einstein field equations with the energy-momentum tensor of a homogeneous, isotropic fluid as the source are considered with an anisotropic metric that includes the direct sum of a 3-dimensional (physical, flat) external space metric and an n-dimensional (compact,... |
2105.06670 | Bing-Yu Su | Bing-Yu Su and Nan Li | On the dual relation in the Hawking--Page phase transition of the black
holes in a cavity | 18 pages, 3 figures | Nucl. Phys. B 979 (2022) 115782 | 10.1016/j.nuclphysb.2022.115782 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hawking--Page phase transitions of the $d$-dimensional Schwarzschild and
charged black holes are explored in a cavity. The phase transition temperature
$T_{\rm HP}$, the minimum black hole temperature $T_0$, and the Gibbs free
energy $G$ are systematically calculated. A dual relation for the Schwarzschild
black h... | [
{
"created": "Fri, 14 May 2021 07:03:23 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Apr 2022 07:27:11 GMT",
"version": "v2"
}
] | 2022-04-25 | [
[
"Su",
"Bing-Yu",
""
],
[
"Li",
"Nan",
""
]
] | The Hawking--Page phase transitions of the $d$-dimensional Schwarzschild and charged black holes are explored in a cavity. The phase transition temperature $T_{\rm HP}$, the minimum black hole temperature $T_0$, and the Gibbs free energy $G$ are systematically calculated. A dual relation for the Schwarzschild black hol... |
gr-qc/0411076 | Frederic P. Schuller | Frederic P. Schuller, Mattias N.R. Wohlfarth | Classical limit of quantum gravity in an accelerating universe | 11 pages, no figures | Phys.Lett. B612 (2005) 93-99 | 10.1016/j.physletb.2005.03.009 | null | gr-qc hep-th | null | A one-parameter deformation of Einstein?Hilbert gravity with an inverse
Riemann curvature term is derived as the classical limit of quantum gravity
compatible with an accelerating universe. This result is based on the
investigation of semi-classical theories with sectional curvature bounds which
are shown not to admi... | [
{
"created": "Mon, 15 Nov 2004 21:53:06 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Mar 2005 16:21:50 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Apr 2005 23:41:10 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Schuller",
"Frederic P.",
""
],
[
"Wohlfarth",
"Mattias N. R.",
""
]
] | A one-parameter deformation of Einstein?Hilbert gravity with an inverse Riemann curvature term is derived as the classical limit of quantum gravity compatible with an accelerating universe. This result is based on the investigation of semi-classical theories with sectional curvature bounds which are shown not to admit ... |
gr-qc/0309039 | Alessandro D. A. M. Spallicci | Alessandro D.A.M. Spallicci, Sofiane Aoudia (Observatoire de la Cote
d'Azur, Nice) | Perturbation method in the assessment of radiation reaction in the
capture of stars by black holes | 10 pages, no figures. Email: spallicci@obs-nice.fr To appear on
Classical and Quantum Gravity March 2004 | Class.Quant.Grav. 21 (2004) S563-S572 | 10.1088/0264-9381/21/5/027 | null | gr-qc astro-ph math-ph math.MP | null | This work deals with the motion of a radially falling star in Schwarzschild
geometry and correctly identifies radiation reaction terms by the perturbative
method. The results are: i) identification of all terms up to first order in
perturbations, second in trajectory deviation, and mixed terms including lowest
order ... | [
{
"created": "Sun, 7 Sep 2003 08:54:49 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Dec 2003 14:37:53 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Spallicci",
"Alessandro D. A. M.",
"",
"Observatoire de la Cote\n d'Azur, Nice"
],
[
"Aoudia",
"Sofiane",
"",
"Observatoire de la Cote\n d'Azur, Nice"
]
] | This work deals with the motion of a radially falling star in Schwarzschild geometry and correctly identifies radiation reaction terms by the perturbative method. The results are: i) identification of all terms up to first order in perturbations, second in trajectory deviation, and mixed terms including lowest order ra... |
2304.06641 | Mushtaq Ahmad Sial | Mushtaq Ahmad, M. Farasat Shamir, G. Mustafa | $f(\mathcal{G},\mathrm{\textit{T}})$ Gravity Bouncing Universe with
Cosmological Parameters | 12 pages, 10 figures | Chin. J. Phys. 71 (2021) 770 | 10.1016/j.cjph.2021.04.009 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In recent few years, the Gauss-Bonnet $f(\mathcal{G},\mathrm{\textit{T}})$
theory of gravity has fascinated considerable researchers owing to its coupling
of trace of the stress-energy tensor $T$ with the Gauss-Bonnet term
$\mathcal{G}$. In this context, we focuss ourselves to study bouncing universe
with in $f(\math... | [
{
"created": "Thu, 13 Apr 2023 16:11:06 GMT",
"version": "v1"
}
] | 2023-04-14 | [
[
"Ahmad",
"Mushtaq",
""
],
[
"Shamir",
"M. Farasat",
""
],
[
"Mustafa",
"G.",
""
]
] | In recent few years, the Gauss-Bonnet $f(\mathcal{G},\mathrm{\textit{T}})$ theory of gravity has fascinated considerable researchers owing to its coupling of trace of the stress-energy tensor $T$ with the Gauss-Bonnet term $\mathcal{G}$. In this context, we focuss ourselves to study bouncing universe with in $f(\mathca... |
2407.20621 | Giuseppe Gaetano Luciano Dr | Yassine Sekhmani, Dhruba Jyoti Gogoi, Ratbay Myrzakulov, Giuseppe
Gaetano Luciano and Javlon Rayimbaev | Four $\mathbb{S}\mathbb{T}\mathbb{U}$ Black Holes Shadows | 32 pages, 14 labeled figures, accepted for publication in Classical
and Quantum Gravity | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this work, we examine the optical behaviors and thermodynamic phase
structures using shadow analysis for four $\mathbb{S}\mathbb{T}\mathbb{U}$
black holes. The study is conducted for four cases of charge configurations on
the parameter space $\mathcal{M}\left(q_1,q_2,q_3,q_4\right)$. As a matter of
fact, both the ... | [
{
"created": "Tue, 30 Jul 2024 07:55:26 GMT",
"version": "v1"
}
] | 2024-07-31 | [
[
"Sekhmani",
"Yassine",
""
],
[
"Gogoi",
"Dhruba Jyoti",
""
],
[
"Myrzakulov",
"Ratbay",
""
],
[
"Luciano",
"Giuseppe Gaetano",
""
],
[
"Rayimbaev",
"Javlon",
""
]
] | In this work, we examine the optical behaviors and thermodynamic phase structures using shadow analysis for four $\mathbb{S}\mathbb{T}\mathbb{U}$ black holes. The study is conducted for four cases of charge configurations on the parameter space $\mathcal{M}\left(q_1,q_2,q_3,q_4\right)$. As a matter of fact, both the el... |
1907.07586 | Christos Tsagas | J.D. Barrow, C.G. Tsagas, G. Fanaras | Friedmann-like universes with weak torsion: a dynamical system approach | Minor changes. Published in EPJC | Eur. Phys. J. C 79, 764 (2019) | 10.1140/epjc/s10052-019-7270-x | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Friedmann-like universes with torsion and take a step towards
studying their stability. In so doing, we apply dynamical-system techniques to
an autonomous system of differential equations, which monitors the evolution of
these models via the associated density parameters. Assuming relatively weak
torsion,... | [
{
"created": "Wed, 17 Jul 2019 15:31:37 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Sep 2019 14:55:49 GMT",
"version": "v2"
}
] | 2019-10-02 | [
[
"Barrow",
"J. D.",
""
],
[
"Tsagas",
"C. G.",
""
],
[
"Fanaras",
"G.",
""
]
] | We consider Friedmann-like universes with torsion and take a step towards studying their stability. In so doing, we apply dynamical-system techniques to an autonomous system of differential equations, which monitors the evolution of these models via the associated density parameters. Assuming relatively weak torsion, w... |
1606.00852 | Arvin Ravanpak | H. Farajollahi, A. Ravanpak, M. Abolghasemi | Thermodynamics and holography of tachyon cosmology | null | Gen. Relativ. Gravit., Volume 45, Issue 2, pp 465-476 (2013) | 10.1007/s10714-012-1481-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, we have investigated the dynamics of the universe in tachyon
cosmology with non-minimal coupling to matter \cite{faraj}-\cite{faraj3}. In
particular, for the interacting holographic dark energy (IHDE), the model is
studied in \cite{Ravanpak}. In the current work, a significant observational
program has been... | [
{
"created": "Thu, 2 Jun 2016 20:13:11 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Jul 2016 06:54:45 GMT",
"version": "v2"
}
] | 2016-07-26 | [
[
"Farajollahi",
"H.",
""
],
[
"Ravanpak",
"A.",
""
],
[
"Abolghasemi",
"M.",
""
]
] | Recently, we have investigated the dynamics of the universe in tachyon cosmology with non-minimal coupling to matter \cite{faraj}-\cite{faraj3}. In particular, for the interacting holographic dark energy (IHDE), the model is studied in \cite{Ravanpak}. In the current work, a significant observational program has been c... |
gr-qc/0306062 | Akira Ohashi | Akira Ohashi | Multipole particle in relativity | 22 pages, 2 figures. Accepted for publication in Phys. Rev. D | Phys.Rev. D68 (2003) 044009 | 10.1103/PhysRevD.68.044009 | null | gr-qc | null | We discuss the motion of extended objects in a spacetime by considering a
gravitational field created by these objects. We define multipole moments of
the objects as a classification by Lie group SO(3). Then, we construct an
energy-momentum tensor for the objects and derive equations of motion from it.
As a result, w... | [
{
"created": "Mon, 16 Jun 2003 07:44:15 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Ohashi",
"Akira",
""
]
] | We discuss the motion of extended objects in a spacetime by considering a gravitational field created by these objects. We define multipole moments of the objects as a classification by Lie group SO(3). Then, we construct an energy-momentum tensor for the objects and derive equations of motion from it. As a result, we ... |
2009.03905 | Emanuele Berti | Emanuele Berti, Lucas G. Collodel, Burkhard Kleihaus, Jutta Kunz | Spin-induced black hole scalarization in Einstein-scalar-Gauss-Bonnet
theory | 5 pages, 3 figures. Matches version published in PRL and fixes a
small typo (F_0 should read F_1 in equation 6) | Phys. Rev. Lett. 126, 011104 (2021) | 10.1103/PhysRevLett.126.011104 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct black hole solutions with spin-induced scalarization in a class
of models where a scalar field is quadratically coupled to the topological
Gauss-Bonnet term. Starting from the tachyonically unstable Kerr solutions, we
obtain families of scalarized black holes such that the scalar field has either
even or... | [
{
"created": "Tue, 8 Sep 2020 18:00:02 GMT",
"version": "v1"
},
{
"created": "Sat, 9 Jan 2021 18:12:12 GMT",
"version": "v2"
}
] | 2021-01-12 | [
[
"Berti",
"Emanuele",
""
],
[
"Collodel",
"Lucas G.",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | We construct black hole solutions with spin-induced scalarization in a class of models where a scalar field is quadratically coupled to the topological Gauss-Bonnet term. Starting from the tachyonically unstable Kerr solutions, we obtain families of scalarized black holes such that the scalar field has either even or o... |
2006.14628 | Elisa Maggio | Elisa Maggio, Luca Buoninfante, Anupam Mazumdar, Paolo Pani | How does a dark compact object ringdown? | 11+7 pages, 8 figures. v2: minor revisions to match the version to
appear in PRD | Phys. Rev. D 102, 064053 (2020) | 10.1103/PhysRevD.102.064053 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A generic feature of nearly out-of-equilibrium dissipative systems is that
they resonate through a set of quasinormal modes. Black holes - the absorbing
objects par excellence - are no exception. When formed in a merger, black holes
vibrate in a process called "ringdown", which leaves the gravitational-wave
footprint... | [
{
"created": "Thu, 25 Jun 2020 18:00:01 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Sep 2020 21:29:00 GMT",
"version": "v2"
}
] | 2020-09-23 | [
[
"Maggio",
"Elisa",
""
],
[
"Buoninfante",
"Luca",
""
],
[
"Mazumdar",
"Anupam",
""
],
[
"Pani",
"Paolo",
""
]
] | A generic feature of nearly out-of-equilibrium dissipative systems is that they resonate through a set of quasinormal modes. Black holes - the absorbing objects par excellence - are no exception. When formed in a merger, black holes vibrate in a process called "ringdown", which leaves the gravitational-wave footprint o... |
2303.09699 | Nicolas R. Bertini | Nicolas R. Bertini, Hermano Velten | Fully conservative $f(R,T)$ gravity and Solar System constraints | 15 pages, thirteen references added and text improvements. Typos
corrected. Accepted in PRD | Phys. Rev. D 107, 124005 (2023) | 10.1103/PhysRevD.107.124005 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The $f(R,T)$ gravity is a model whose action contains an arbitrary function
of the Ricci scalar $R$ and the trace of the energy-momentum tensor $T$. We
consider the separable model $f (R, T ) = \chi(R) + \varphi(T )$ and shown
that, for perfect fluids, the dynamical equations are sufficient to determine
how $\varphi$... | [
{
"created": "Fri, 17 Mar 2023 00:05:58 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Jun 2023 17:37:46 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Jun 2023 23:58:38 GMT",
"version": "v3"
}
] | 2023-06-29 | [
[
"Bertini",
"Nicolas R.",
""
],
[
"Velten",
"Hermano",
""
]
] | The $f(R,T)$ gravity is a model whose action contains an arbitrary function of the Ricci scalar $R$ and the trace of the energy-momentum tensor $T$. We consider the separable model $f (R, T ) = \chi(R) + \varphi(T )$ and shown that, for perfect fluids, the dynamical equations are sufficient to determine how $\varphi$ d... |
2310.09224 | ChengGang Qin | Cheng-Gang Qin, Jun Ke, Qin Li, Ya-Fen Chen, Jie Luo, Yu-Jie Tan, and
Cheng-Gang Shao | Testing Lorentz symmetry with space-based gravitational-wave detectors | 17 pages, 10 figures | Classical and Quantum Gravity 40(2023)205005 | 10.1088/1361-6382/acf7a6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lorentz symmetry (LS), one of the most fundamental physical symmetries, has
been extensively studied in the context of quantum gravity and unification
theories. Many of these theories predict a LS violation, which could arise from
the discreteness of spacetime, or extra dimensions. Standard-model extension
(SME) is a... | [
{
"created": "Fri, 13 Oct 2023 16:21:33 GMT",
"version": "v1"
}
] | 2023-10-16 | [
[
"Qin",
"Cheng-Gang",
""
],
[
"Ke",
"Jun",
""
],
[
"Li",
"Qin",
""
],
[
"Chen",
"Ya-Fen",
""
],
[
"Luo",
"Jie",
""
],
[
"Tan",
"Yu-Jie",
""
],
[
"Shao",
"Cheng-Gang",
""
]
] | Lorentz symmetry (LS), one of the most fundamental physical symmetries, has been extensively studied in the context of quantum gravity and unification theories. Many of these theories predict a LS violation, which could arise from the discreteness of spacetime, or extra dimensions. Standard-model extension (SME) is an ... |
2309.08694 | Marina Cort\^es | Vasco Gil Gomes, Marina Cort\^es, Andrew R. Liddle | Higher Dimensional Energetic Causal Sets | 17 pages, 19 figures, additional discussion and references. Matches
the journal submitted version and includes a new section connecting
perspectives in quantum gravity with those in the artificial general
intelligence (AGI) debate. This allows us to take a position in the AGI
debate based in arguments of the EC... | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The energetic causal set (ECS) program of Cort\^es and Smolin, whose
distinguishing feature is the foundational time irreversibility of the
evolution equations of quantum gravity, was initiated ten years ago. The model
showed the emergence of a time-reversible phase from the time-irreversible
foundational regime, but... | [
{
"created": "Fri, 15 Sep 2023 18:36:59 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Sep 2023 11:20:55 GMT",
"version": "v2"
},
{
"created": "Wed, 29 Nov 2023 18:48:19 GMT",
"version": "v3"
}
] | 2023-11-30 | [
[
"Gomes",
"Vasco Gil",
""
],
[
"Cortês",
"Marina",
""
],
[
"Liddle",
"Andrew R.",
""
]
] | The energetic causal set (ECS) program of Cort\^es and Smolin, whose distinguishing feature is the foundational time irreversibility of the evolution equations of quantum gravity, was initiated ten years ago. The model showed the emergence of a time-reversible phase from the time-irreversible foundational regime, but o... |
gr-qc/9703046 | S. M. Goncalves | Sergio M.C.V. Goncalves and Ian G. Moss | Scalar Curvature Fluctuations on the Four-Sphere | 8 pages, RevTeX, 2 eps figures. Submitted to Phys. Lett. B | Phys.Lett. B401 (1997) 254-257 | 10.1016/S0370-2693(97)00397-3 | null | gr-qc | null | Two-point functions of the scalar curvature for metric fluctuations on the
four-sphere are analysed. The two-point function for points separated by a
fixed distance and for metrics of fixed volume is calculated using spacetime
foam methods. This result can be used for comparison between the continuum
approach to quan... | [
{
"created": "Tue, 18 Mar 1997 14:17:50 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Goncalves",
"Sergio M. C. V.",
""
],
[
"Moss",
"Ian G.",
""
]
] | Two-point functions of the scalar curvature for metric fluctuations on the four-sphere are analysed. The two-point function for points separated by a fixed distance and for metrics of fixed volume is calculated using spacetime foam methods. This result can be used for comparison between the continuum approach to quantu... |
0707.3387 | Rodrigo Holanda | R. F. L. Holanda, S. H. Pereira | On the dynamics of the universe in $D$ spatial dimensions | 10 pages, 2 figures, Revista Mexicana de Astronom\'ia y Astrof\'isica
(in Press). arXiv admin note: text overlap with arXiv:astro-ph/0109215 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we present the equations of the evolution of the universe in
$D$ spatial dimensions, as a generalization of the work of Lima \citep{lima}.
We discuss the Friedmann-Robertson-Walker cosmological equations in $D$ spatial
dimensions for a simple fluid with equation of state $p=\omega_{D}\rho$. It is
possib... | [
{
"created": "Mon, 23 Jul 2007 18:17:10 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Jul 2012 21:45:20 GMT",
"version": "v2"
}
] | 2012-07-09 | [
[
"Holanda",
"R. F. L.",
""
],
[
"Pereira",
"S. H.",
""
]
] | In this paper we present the equations of the evolution of the universe in $D$ spatial dimensions, as a generalization of the work of Lima \citep{lima}. We discuss the Friedmann-Robertson-Walker cosmological equations in $D$ spatial dimensions for a simple fluid with equation of state $p=\omega_{D}\rho$. It is possible... |
1302.3275 | Xuefeng Zhang PhD | Xuefeng Zhang and Daniel Finley | CR Structures and Twisting Vacuum Spacetimes with Two Killing Vectors
and Cosmological Constant: Type II and More Special | 22 pages | Class. Quantum Grav. (2013) 30 115006 | 10.1088/0264-9381/30/11/115006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the CR formalism of algebraically special spacetimes by Hill,
Lewandowski and Nurowski, we derive a nonlinear system of two real ODEs, of
which the general solution determines a twisting type II (or more special)
vacuum spacetime with two Killing vectors (commuting or not) and at most seven
real parameters i... | [
{
"created": "Wed, 13 Feb 2013 23:52:19 GMT",
"version": "v1"
}
] | 2013-05-23 | [
[
"Zhang",
"Xuefeng",
""
],
[
"Finley",
"Daniel",
""
]
] | Based on the CR formalism of algebraically special spacetimes by Hill, Lewandowski and Nurowski, we derive a nonlinear system of two real ODEs, of which the general solution determines a twisting type II (or more special) vacuum spacetime with two Killing vectors (commuting or not) and at most seven real parameters in ... |
2002.07554 | Carlos Palenzuela | S.L. Liebling, C. Palenzuela and L. Lehner | Towards fidelity and scalability in non-vacuum mergers | 10 pages, 8 figures | null | 10.1088/1361-6382/ab8fcd | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the evolution of two fiducial configurations for binary neutron
stars using two different general relativistic hydrodynamics(GRHD), distributed
adaptive mesh codes. One code, HAD, has for many years been used to study
mergers of compact object binaries, while a new code, MHDuet, has been recently
developed w... | [
{
"created": "Tue, 18 Feb 2020 13:48:28 GMT",
"version": "v1"
}
] | 2020-08-26 | [
[
"Liebling",
"S. L.",
""
],
[
"Palenzuela",
"C.",
""
],
[
"Lehner",
"L.",
""
]
] | We study the evolution of two fiducial configurations for binary neutron stars using two different general relativistic hydrodynamics(GRHD), distributed adaptive mesh codes. One code, HAD, has for many years been used to study mergers of compact object binaries, while a new code, MHDuet, has been recently developed wit... |
2111.06303 | Norbert Van den Bergh | Norbert Van den Bergh and John Carminati | Comment on "Shear-free barotropic perfect fluids cannot rotate and
expand simultaneously" by R. Goswami and G.F.R. Ellis | 3 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We point out an error in a recent paper by Goswami and Ellis. As a
consequence the question of whether shear-free barotropic perfect fluids (with
$p+\mu\neq 0$) can or cannot rotate and expand simultaneously, is still wide
open
| [
{
"created": "Thu, 11 Nov 2021 16:48:13 GMT",
"version": "v1"
}
] | 2021-11-12 | [
[
"Bergh",
"Norbert Van den",
""
],
[
"Carminati",
"John",
""
]
] | We point out an error in a recent paper by Goswami and Ellis. As a consequence the question of whether shear-free barotropic perfect fluids (with $p+\mu\neq 0$) can or cannot rotate and expand simultaneously, is still wide open |
2404.18875 | Alice Bonino | Alice Bonino, Patricia Schmidt, Geraint Pratten | Mapping eccentricity evolutions between numerical relativity and
effective-one-body gravitational waveforms | 25 pages, 14 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Orbital eccentricity in compact binaries is considered to be a key tracer of
their astrophysical origin, and can be inferred from gravitational-wave
observations due to its imprint on the emitted signal. For a robust
measurement, accurate waveform models are needed. However, ambiguities in the
definition of eccentric... | [
{
"created": "Mon, 29 Apr 2024 17:09:15 GMT",
"version": "v1"
}
] | 2024-04-30 | [
[
"Bonino",
"Alice",
""
],
[
"Schmidt",
"Patricia",
""
],
[
"Pratten",
"Geraint",
""
]
] | Orbital eccentricity in compact binaries is considered to be a key tracer of their astrophysical origin, and can be inferred from gravitational-wave observations due to its imprint on the emitted signal. For a robust measurement, accurate waveform models are needed. However, ambiguities in the definition of eccentricit... |
gr-qc/0303044 | Carlos Augusto Romero Filho | F. Dahia, E. M. Monte and C. Romero | Fifth force from fifth dimension: a comparison between two different
approaches | l7 pages - Typeset using REVTEX | Mod.Phys.Lett. A18 (2003) 1773-1782 | 10.1142/S0217732303011484 | null | gr-qc hep-th | null | We investigate the dynamics of particles moving in a spacetime augmented by
one extra dimension in the context of the induced matter theory of gravity. We
examine the appearance of a fifth force as an effect caused by the extra
dimension and discuss two different approaches to the fifth force formalism. We
then give ... | [
{
"created": "Tue, 11 Mar 2003 17:49:04 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Dahia",
"F.",
""
],
[
"Monte",
"E. M.",
""
],
[
"Romero",
"C.",
""
]
] | We investigate the dynamics of particles moving in a spacetime augmented by one extra dimension in the context of the induced matter theory of gravity. We examine the appearance of a fifth force as an effect caused by the extra dimension and discuss two different approaches to the fifth force formalism. We then give tw... |
1601.06467 | Mihalis Dafermos | Mihalis Dafermos, Gustav Holzegel and Igor Rodnianski | The linear stability of the Schwarzschild solution to gravitational
perturbations | 146 pages, 4 figures | Acta Math., 222 (2019), 1-214 | 10.4310/ACTA.2019.v222.n1.a1 | null | gr-qc math-ph math.AP math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove in this paper the linear stability of the celebrated Schwarzschild
family of black holes in general relativity: Solutions to the linearisation of
the Einstein vacuum equations around a Schwarzschild metric arising from
regular initial data remain globally bounded on the black hole exterior and in
fact decay ... | [
{
"created": "Mon, 25 Jan 2016 02:38:24 GMT",
"version": "v1"
}
] | 2019-08-27 | [
[
"Dafermos",
"Mihalis",
""
],
[
"Holzegel",
"Gustav",
""
],
[
"Rodnianski",
"Igor",
""
]
] | We prove in this paper the linear stability of the celebrated Schwarzschild family of black holes in general relativity: Solutions to the linearisation of the Einstein vacuum equations around a Schwarzschild metric arising from regular initial data remain globally bounded on the black hole exterior and in fact decay to... |
0705.0246 | Valerio Bozza | V. Bozza, G. Scarpetta | Strong deflection limit of black hole gravitational lensing with
arbitrary source distances | 20 pages, 8 figures, appendix added. In press on Physical Review D | Phys.Rev.D76:083008,2007 | 10.1103/PhysRevD.76.083008 | null | gr-qc astro-ph | null | The gravitational field of supermassive black holes is able to strongly bend
light rays emitted by nearby sources. When the deflection angle exceeds $\pi$,
gravitational lensing can be analytically approximated by the so-called strong
deflection limit. In this paper we remove the conventional assumption of
sources ve... | [
{
"created": "Wed, 2 May 2007 10:39:43 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Sep 2007 10:44:36 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Bozza",
"V.",
""
],
[
"Scarpetta",
"G.",
""
]
] | The gravitational field of supermassive black holes is able to strongly bend light rays emitted by nearby sources. When the deflection angle exceeds $\pi$, gravitational lensing can be analytically approximated by the so-called strong deflection limit. In this paper we remove the conventional assumption of sources very... |
1708.03757 | Chunshan Lin | Chunshan Lin, Shinji Mukohyama | A Class of Minimally Modified Gravity Theories | 20 pages, no figure | null | 10.1088/1475-7516/2017/10/033 | YITP17-83, IPMU17-0111 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the Hamiltonian structure of a class of gravitational theories
whose actions are linear in the lapse function. We derive the necessary and
sufficient condition for a theory in this class to have two or less local
physical degrees of freedom. As an application we then find several concrete
examples of m... | [
{
"created": "Sat, 12 Aug 2017 09:31:49 GMT",
"version": "v1"
}
] | 2017-11-01 | [
[
"Lin",
"Chunshan",
""
],
[
"Mukohyama",
"Shinji",
""
]
] | We investigate the Hamiltonian structure of a class of gravitational theories whose actions are linear in the lapse function. We derive the necessary and sufficient condition for a theory in this class to have two or less local physical degrees of freedom. As an application we then find several concrete examples of mod... |
gr-qc/9912064 | Petr Hajicek | P. Hajicek (University of Berne) | What simplified models say about unitarity and gravitational collapse | 17 pages, uses amstex, no figures | Nucl.Phys.Proc.Suppl. 88 (2000) 114-123 | 10.1016/S0920-5632(00)00759-3 | BUTP-99/29 | gr-qc | null | This paper is an extended version of a talk at the conference Constrained
Dynamics and Quantum Gravity QG99. It reviews some work on the quantum collapse
of the spherically symmetric gravitating thin shell of zero rest mass. Recent
results on Kucha\v{r} decomposition are applied. The constructed version of
quantum me... | [
{
"created": "Wed, 15 Dec 1999 14:34:41 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Hajicek",
"P.",
"",
"University of Berne"
]
] | This paper is an extended version of a talk at the conference Constrained Dynamics and Quantum Gravity QG99. It reviews some work on the quantum collapse of the spherically symmetric gravitating thin shell of zero rest mass. Recent results on Kucha\v{r} decomposition are applied. The constructed version of quantum mech... |
gr-qc/0608072 | Santiago Esteban Perez Bergliaffa | Santiago Esteban Perez Bergliaffa | Constraining f(R) theories with the energy conditions | 4 pages, 3 figures | Phys.Lett. B642 (2006) 311-314 | 10.1016/j.physletb.2006.10.003 | null | gr-qc | null | A new method to constrain gravitational theories depending on the Ricci
scalar is presented. It is based on the weak energy condition and yields limits
on the parameters of a given theory through the current values of the
derivatives of the scale factor of the Friedmann-Robertson-Walker geometry. A
further constraint... | [
{
"created": "Tue, 15 Aug 2006 18:34:37 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Bergliaffa",
"Santiago Esteban Perez",
""
]
] | A new method to constrain gravitational theories depending on the Ricci scalar is presented. It is based on the weak energy condition and yields limits on the parameters of a given theory through the current values of the derivatives of the scale factor of the Friedmann-Robertson-Walker geometry. A further constraint d... |
gr-qc/0409112 | Ulvi Yurtsever | Ulvi Yurtsever and George Hockney | Signaling, Entanglement, and Quantum Evolution Beyond Cauchy Horizons | Combined, revised, and expanded version of quant-ph/0312160 and
hep-th/0402060; 13 pages, RevTeX, 2 eps figures | Class.Quant.Grav. 22 (2005) 295-312 | 10.1088/0264-9381/22/2/004 | null | gr-qc hep-th quant-ph | null | Consider a bipartite entangled system half of which falls through the event
horizon of an evaporating black hole, while the other half remains coherently
accessible to experiments in the exterior region. Beyond complete evaporation,
the evolution of the quantum state past the Cauchy horizon cannot remain
unitary, rai... | [
{
"created": "Wed, 29 Sep 2004 08:16:42 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Yurtsever",
"Ulvi",
""
],
[
"Hockney",
"George",
""
]
] | Consider a bipartite entangled system half of which falls through the event horizon of an evaporating black hole, while the other half remains coherently accessible to experiments in the exterior region. Beyond complete evaporation, the evolution of the quantum state past the Cauchy horizon cannot remain unitary, raisi... |
2310.04221 | Ekapong Hirunsirisawat | Chatchai Promsiri, Weerawit Horinouchi, Ekapong Hirunsirisawat | Remarks on the light ring images and the optical appearance of hairy
black holes in Einstein-Maxwell-dilaton gravity | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The behaviors of null geodesics in the spherical symmetric black holes in
Einstein-Maxwell-dilaton (EMD) theory with coupling function
$f(\Phi)=e^{-2\alpha \Phi}$ are meticulously analyzed. We investigate the
effects of coupling constant $\alpha$ on the effective potential of photon
trajectories within three ranges, ... | [
{
"created": "Fri, 6 Oct 2023 13:09:50 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Oct 2023 13:37:56 GMT",
"version": "v2"
}
] | 2023-10-20 | [
[
"Promsiri",
"Chatchai",
""
],
[
"Horinouchi",
"Weerawit",
""
],
[
"Hirunsirisawat",
"Ekapong",
""
]
] | The behaviors of null geodesics in the spherical symmetric black holes in Einstein-Maxwell-dilaton (EMD) theory with coupling function $f(\Phi)=e^{-2\alpha \Phi}$ are meticulously analyzed. We investigate the effects of coupling constant $\alpha$ on the effective potential of photon trajectories within three ranges, na... |
gr-qc/0209027 | Lorenzo Iorio | Lorenzo Iorio, David M. Lucchesi | LAGEOS-type Satellites in Critical Supplementary Orbit Configuration and
the Lense-Thirring Effect Detection | LaTex2e, 20 pages, 7 Tables, 6 Figures. Changes in Introduction,
Conclusions, reference added, accepted for publication in Classical and
Quantum Gravity | Class.Quant.Grav. 20 (2003) 2477-2490 | 10.1088/0264-9381/20/13/302 | null | gr-qc astro-ph physics.space-ph | null | In this paper we analyze quantitatively the concept of LAGEOS--type
satellites in critical supplementary orbit configuration (CSOC) which has
proven capable of yielding various observables for many tests of General
Relativity in the terrestrial gravitational field, with particular emphasis on
the measurement of the L... | [
{
"created": "Mon, 9 Sep 2002 10:27:54 GMT",
"version": "v1"
},
{
"created": "Sat, 17 May 2003 13:36:05 GMT",
"version": "v2"
},
{
"created": "Tue, 20 May 2003 13:44:26 GMT",
"version": "v3"
}
] | 2007-11-12 | [
[
"Iorio",
"Lorenzo",
""
],
[
"Lucchesi",
"David M.",
""
]
] | In this paper we analyze quantitatively the concept of LAGEOS--type satellites in critical supplementary orbit configuration (CSOC) which has proven capable of yielding various observables for many tests of General Relativity in the terrestrial gravitational field, with particular emphasis on the measurement of the Len... |
2005.03690 | Ernesto F. Eiroa | Javier Bad\'ia, Ernesto F. Eiroa | Influence of an anisotropic matter field on the shadow of a rotating
black hole | 14 pages, 5 figures; v2: extended and improved version, new
references added | Phys. Rev. D 102, 024066 (2020) | 10.1103/PhysRevD.102.024066 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the shadow produced by rotating black holes with
charge in the presence of an anisotropic matter field. We obtain the apparent
shape and the corresponding observables characterizing the size, oblateness,
and deviation of the center, for different values of the parameters of the
model. We compa... | [
{
"created": "Thu, 7 May 2020 18:27:52 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Jul 2020 16:11:20 GMT",
"version": "v2"
}
] | 2020-07-24 | [
[
"Badía",
"Javier",
""
],
[
"Eiroa",
"Ernesto F.",
""
]
] | In this paper, we study the shadow produced by rotating black holes with charge in the presence of an anisotropic matter field. We obtain the apparent shape and the corresponding observables characterizing the size, oblateness, and deviation of the center, for different values of the parameters of the model. We compare... |
0710.0814 | Jannie Leach | Naureen Goheer, Jannie A. Leach and Peter K.S. Dunsby | Dynamical systems analysis of anisotropic cosmologies in $R^n$-gravity | 21pages, revised to match published version | Class.Quant.Grav.24:5689-5708,2007 | 10.1088/0264-9381/24/22/026 | null | gr-qc astro-ph math.DS | null | In this paper we study the dynamics of {\it orthogonal spatially homogeneous}
Bianchi cosmologies in $R^n$-gravity. We construct a compact state space by
dividing the state space into different sectors. We perform a detailed analysis
of the cosmological behaviour in terms of the parameter $n$, determining all
the equ... | [
{
"created": "Wed, 3 Oct 2007 15:47:31 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Nov 2007 15:55:00 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Goheer",
"Naureen",
""
],
[
"Leach",
"Jannie A.",
""
],
[
"Dunsby",
"Peter K. S.",
""
]
] | In this paper we study the dynamics of {\it orthogonal spatially homogeneous} Bianchi cosmologies in $R^n$-gravity. We construct a compact state space by dividing the state space into different sectors. We perform a detailed analysis of the cosmological behaviour in terms of the parameter $n$, determining all the equil... |
gr-qc/9809043 | Saulo Carneiro | Saulo Carneiro | A Godel-Friedman cosmology? | Extended version, accepted for publication in Physical Review D | Phys.Rev. D61 (2000) 083506 | 10.1103/PhysRevD.61.083506 | null | gr-qc astro-ph hep-th | null | Based on the mathematical similarity between the Friedman open metric and
Godel's metric in the case of nearby distances, we investigate a new scenario
for the Universe's evolution, where the present Friedman universe originates
from a primordial Godel universe by a phase transition during which the
cosmological cons... | [
{
"created": "Fri, 11 Sep 1998 19:55:13 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Feb 2000 16:05:09 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Carneiro",
"Saulo",
""
]
] | Based on the mathematical similarity between the Friedman open metric and Godel's metric in the case of nearby distances, we investigate a new scenario for the Universe's evolution, where the present Friedman universe originates from a primordial Godel universe by a phase transition during which the cosmological consta... |
gr-qc/0105050 | Dragovich | G.S. Djordjevic, B. Dragovich, Lj.D. Nesic and I.V. Volovich | p-Adic and Adelic Minisuperspace Quantum Cosmology | 20 pages, Extended version which will be published in
Int.J.Mod.Phys.A | Int.J.Mod.Phys. A17 (2002) 1413-1434 | 10.1142/S0217751X02009734 | null | gr-qc | null | We consider the formulation and some elaboration of p-adic and adelic quantum
cosmology. The adelic generalization of the Hartle-Hawking proposal does not
work in models with matter fields. p-Adic and adelic minisuperspace quantum
cosmology is well defined as an ordinary application of p-adic and adelic
quantum mecha... | [
{
"created": "Tue, 15 May 2001 11:16:39 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Apr 2002 11:26:44 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Djordjevic",
"G. S.",
""
],
[
"Dragovich",
"B.",
""
],
[
"Nesic",
"Lj. D.",
""
],
[
"Volovich",
"I. V.",
""
]
] | We consider the formulation and some elaboration of p-adic and adelic quantum cosmology. The adelic generalization of the Hartle-Hawking proposal does not work in models with matter fields. p-Adic and adelic minisuperspace quantum cosmology is well defined as an ordinary application of p-adic and adelic quantum mechani... |
2304.13087 | Hryhorii Ovcharenko | H.V.Ovcharenko, O.B.Zaslavskii | Ba\~{n}ados-Silk-West effect with finite forces near different types of
horizons: general classification of scenarios | 39 pages, 2 figures. Section XII and refs. 22 - 26 added | Phys. Rev. D 108, 064029 (2023) | 10.1103/PhysRevD.108.064029 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If two particles move towards a black hole and collide in the vicinity of the
horizon, under certain conditions their energy $E_{c.m.}$ in the center of mass
frame can grow unbounded. This is the Ba\~{n}ados-Silk-West (BSW) effect.
Usually, this effect is considered for extremal horizons and geodesic (or
electrogedes... | [
{
"created": "Tue, 25 Apr 2023 18:40:10 GMT",
"version": "v1"
},
{
"created": "Sun, 17 Sep 2023 18:09:16 GMT",
"version": "v2"
}
] | 2023-09-19 | [
[
"Ovcharenko",
"H. V.",
""
],
[
"Zaslavskii",
"O. B.",
""
]
] | If two particles move towards a black hole and collide in the vicinity of the horizon, under certain conditions their energy $E_{c.m.}$ in the center of mass frame can grow unbounded. This is the Ba\~{n}ados-Silk-West (BSW) effect. Usually, this effect is considered for extremal horizons and geodesic (or electrogedesic... |
2010.00451 | Salvatore Capozziello | Salvatore Capozziello, Maurizio Capriolo, Loredana Caso | Gravitational Waves in Higher Order Teleparallel Gravity | 27 pages, accepted for publication in Classical and Quantum Gravity | null | 10.1088/1361-6382/abbe71 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The teleparallel equivalent of higher order Lagrangians like $L_{\Box
R}=-R+a_{0}R^{2}+a_{1}R\Box R$ can be obtained by means of the boundary term
$B=2\nabla_{\mu}T^{\mu}$. In this perspective, we derive the field equations in
presence of matter for higher-order teleparallel gravity considering, in
particular, sixth-... | [
{
"created": "Thu, 1 Oct 2020 14:46:06 GMT",
"version": "v1"
}
] | 2020-12-02 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Capriolo",
"Maurizio",
""
],
[
"Caso",
"Loredana",
""
]
] | The teleparallel equivalent of higher order Lagrangians like $L_{\Box R}=-R+a_{0}R^{2}+a_{1}R\Box R$ can be obtained by means of the boundary term $B=2\nabla_{\mu}T^{\mu}$. In this perspective, we derive the field equations in presence of matter for higher-order teleparallel gravity considering, in particular, sixth-or... |
gr-qc/0109057 | Alejandro Corichi | A. Corichi, G. Cruz, A. Minzoni, P. Padilla, M Rosenbaum, M.P. Ryan,
N.F. Smyth, T. Vukasinac | Quantum Collapse of a Small Dust Shell | 23 pages, 8 figures, Revtex4 file | Phys.Rev. D65 (2002) 064006 | 10.1103/PhysRevD.65.064006 | ICN-UNAM-01-18 | gr-qc hep-th | null | The full quantum mechanical collapse of a small relativistic dust shell is
studied analytically, asymptotically and numerically starting from the exact
finite dimensional classical reduced Hamiltonian recently derived by
H\'aj{\'\i}\v{c}ek and Kucha\v{r}. The formulation of the quantum mechanics
encounters two proble... | [
{
"created": "Mon, 17 Sep 2001 22:06:15 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Corichi",
"A.",
""
],
[
"Cruz",
"G.",
""
],
[
"Minzoni",
"A.",
""
],
[
"Padilla",
"P.",
""
],
[
"Rosenbaum",
"M",
""
],
[
"Ryan",
"M. P.",
""
],
[
"Smyth",
"N. F.",
""
],
[
"Vukasinac",
"T.",
... | The full quantum mechanical collapse of a small relativistic dust shell is studied analytically, asymptotically and numerically starting from the exact finite dimensional classical reduced Hamiltonian recently derived by H\'aj{\'\i}\v{c}ek and Kucha\v{r}. The formulation of the quantum mechanics encounters two problems... |
0809.0998 | Matteo Luca Ruggiero | Donato Bini, Andrea Geralico, Matteo Luca Ruggiero, Angelo Tartaglia | Emission vs Fermi coordinates: applications to relativistic positioning
systems | 12 pages iop style, 2 eps figures, to appear on Classical and Quantum
Gravity, 2008 | Class.Quant.Grav.25:205011,2008 | 10.1088/0264-9381/25/20/205011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A 4-dimensional relativistic positioning system for a general spacetime is
constructed by using the so called "emission coordinates". The results apply in
a small region around the world line of an accelerated observer carrying a
Fermi triad, as described by the Fermi metric. In the case of a Schwarzschild
spacetime ... | [
{
"created": "Fri, 5 Sep 2008 10:13:27 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Ruggiero",
"Matteo Luca",
""
],
[
"Tartaglia",
"Angelo",
""
]
] | A 4-dimensional relativistic positioning system for a general spacetime is constructed by using the so called "emission coordinates". The results apply in a small region around the world line of an accelerated observer carrying a Fermi triad, as described by the Fermi metric. In the case of a Schwarzschild spacetime mo... |
1303.1544 | Manuel Kraemer | Manuel Kraemer | Can one observe quantum-gravitational effects in the cosmic microwave
background? | 3 pages, submitted to the Proceedings of the 13th Marcel Grossmann
Meeting, Stockholm, July 2012 | null | 10.1142/9789814623995_0241 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In order to find the correct theory of quantum gravity, one has to look for
observational effects in any candidate theory. Here, we focus on canonical
quantum gravity and calculate the quantum-gravitational contributions to the
anisotropy spectrum of the cosmic microwave background that arise from a
semiclassical app... | [
{
"created": "Wed, 6 Mar 2013 21:04:44 GMT",
"version": "v1"
}
] | 2016-05-20 | [
[
"Kraemer",
"Manuel",
""
]
] | In order to find the correct theory of quantum gravity, one has to look for observational effects in any candidate theory. Here, we focus on canonical quantum gravity and calculate the quantum-gravitational contributions to the anisotropy spectrum of the cosmic microwave background that arise from a semiclassical appro... |
0906.2622 | Meng-Sen Ma | Chao-Guang Huang, Meng-Sen Ma | On Torsion-free Vacuum Solutions of the Model of de Sitter Gauge Theory
of Gravity (II) | 4 pafes,0 figure | Front.Phys.China 4:525-529,2009 | 10.1007/s11467-009-0063-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that all torsion-free vacuum solutions of the model of dS gauge
theory of gravity are the vacuum solutions of Einstein field equations with the
same positive cosmological constant. Furthermore, for the gravitational
theories with more general quadratic gravitational Lagrangian ($F^2+T^2$), the
torsion-fre... | [
{
"created": "Mon, 15 Jun 2009 07:31:45 GMT",
"version": "v1"
}
] | 2009-10-02 | [
[
"Huang",
"Chao-Guang",
""
],
[
"Ma",
"Meng-Sen",
""
]
] | It is shown that all torsion-free vacuum solutions of the model of dS gauge theory of gravity are the vacuum solutions of Einstein field equations with the same positive cosmological constant. Furthermore, for the gravitational theories with more general quadratic gravitational Lagrangian ($F^2+T^2$), the torsion-free ... |
2204.03056 | Gaoping Long | Gaoping Long | Twisted geometry coherent states in all dimensional loop quantum
gravity: II. Ehrenfest Property | null | null | 10.1103/PhysRevD.106.066021 | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by-nc-sa/4.0/ | In the preceding paper of this series of articles we constructed the twisted
geometry coherent states in all dimensional loop quantum gravity and
established their peakedness properties. In this paper we establish the
"Ehrenfest property" of these coherent states which are labelled by the twisted
geometry parameters.... | [
{
"created": "Wed, 6 Apr 2022 19:46:51 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Apr 2022 19:20:46 GMT",
"version": "v2"
}
] | 2022-10-05 | [
[
"Long",
"Gaoping",
""
]
] | In the preceding paper of this series of articles we constructed the twisted geometry coherent states in all dimensional loop quantum gravity and established their peakedness properties. In this paper we establish the "Ehrenfest property" of these coherent states which are labelled by the twisted geometry parameters. B... |
2309.16315 | Nobuyoshi Komatsu | Nobuyoshi Komatsu | Cosmological model based on both holographic-like connection and
Padmanabhan's holographic equipartition law | Final version accepted for publication in PRD. [13 pages, 1 figure] | Phys. Rev. D 109, 023505 (2024) | 10.1103/PhysRevD.109.023505 | null | gr-qc astro-ph.CO hep-ph | http://creativecommons.org/licenses/by-nc-nd/4.0/ | A cosmological model based on holographic scenarios is formulated in a flat
Friedmann-Robertson-Walker universe. To formulate this model, the cosmological
horizon is assumed to have a general entropy and a general temperature
(including Bekenstein-Hawking entropy and Gibbons-Hawking temperature,
respectively). In add... | [
{
"created": "Thu, 28 Sep 2023 10:10:11 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Dec 2023 22:56:48 GMT",
"version": "v2"
}
] | 2024-01-09 | [
[
"Komatsu",
"Nobuyoshi",
""
]
] | A cosmological model based on holographic scenarios is formulated in a flat Friedmann-Robertson-Walker universe. To formulate this model, the cosmological horizon is assumed to have a general entropy and a general temperature (including Bekenstein-Hawking entropy and Gibbons-Hawking temperature, respectively). In addit... |
2105.14985 | Zhi-Wei Wang | Zhi-Wei Wang and Samuel L. Braunstein | Noether charge astronomy | 15 pages, 4 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Noether's theorem identifies fundamental conserved quantities, called Noether
charges, from a Hamiltonian. To-date Noether charges remain largely elusive
within theories of gravity: We do not know how to directly measure them, and
their physical interpretation remains unsettled in general spacetimes. Here we
show tha... | [
{
"created": "Mon, 31 May 2021 14:13:59 GMT",
"version": "v1"
}
] | 2021-06-01 | [
[
"Wang",
"Zhi-Wei",
""
],
[
"Braunstein",
"Samuel L.",
""
]
] | Noether's theorem identifies fundamental conserved quantities, called Noether charges, from a Hamiltonian. To-date Noether charges remain largely elusive within theories of gravity: We do not know how to directly measure them, and their physical interpretation remains unsettled in general spacetimes. Here we show that ... |
1410.2718 | Narayan Banerjee | Sridip Pal and Narayan Banerjee | Addressing the issue of non-unitarity in anisotropic quantum cosmology | 6 two column pages, no figure, accepted for publication in Physical
Review D | null | 10.1103/PhysRevD.90.104001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work we show that the widely believed pathology of the
non-unitarity of anisotropic quantum cosmological models cannot be a generic
problem. We exhibit a non trivial example, a Bianchi-I model with an
ultrarelativistic fluid, that has a well behaved time independent norm. We also
show that a suitable o... | [
{
"created": "Fri, 10 Oct 2014 09:17:31 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Pal",
"Sridip",
""
],
[
"Banerjee",
"Narayan",
""
]
] | In the present work we show that the widely believed pathology of the non-unitarity of anisotropic quantum cosmological models cannot be a generic problem. We exhibit a non trivial example, a Bianchi-I model with an ultrarelativistic fluid, that has a well behaved time independent norm. We also show that a suitable ope... |
gr-qc/0102047 | Sergio Dain | Sergio Dain and Helmut Friedrich | Asymptotically Flat Initial Data with Prescribed Regularity at Infinity | Latex 2e, 47 pages, no figures | Commun.Math.Phys. 222 (2001) 569-609 | 10.1007/s002200100524 | null | gr-qc | null | We prove the existence of a large class of asymptotically flat initial data
with non-vanishing mass and angular momentum for which the metric and the
extrinsic curvature have asymptotic expansions at space-like infinity in terms
of powers of a radial coordinate.
| [
{
"created": "Mon, 12 Feb 2001 15:35:25 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Dain",
"Sergio",
""
],
[
"Friedrich",
"Helmut",
""
]
] | We prove the existence of a large class of asymptotically flat initial data with non-vanishing mass and angular momentum for which the metric and the extrinsic curvature have asymptotic expansions at space-like infinity in terms of powers of a radial coordinate. |
0803.1823 | Joel Saavedra | Joel Saavedra and Yerko V\'asquez | Effective gravitational equations on brane world with induced gravity
described by $f(R)$ term | 8 pages, disscusion improved, version accepted by JCAP | null | 10.1088/1475-7516/2009/04/013 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we study a generalization of DGP scenarios, where the induced
gravity is given by a $f(R)$ term. We obtain the effective gravitational
equations and the effective FLRW cosmological equation on the brane of this
model. We show that this generalization has also two regime, a 5D regime a low
energies tha... | [
{
"created": "Wed, 12 Mar 2008 19:02:30 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Jul 2008 15:21:28 GMT",
"version": "v2"
},
{
"created": "Wed, 1 Apr 2009 01:33:29 GMT",
"version": "v3"
}
] | 2009-11-13 | [
[
"Saavedra",
"Joel",
""
],
[
"Vásquez",
"Yerko",
""
]
] | In this article we study a generalization of DGP scenarios, where the induced gravity is given by a $f(R)$ term. We obtain the effective gravitational equations and the effective FLRW cosmological equation on the brane of this model. We show that this generalization has also two regime, a 5D regime a low energies that ... |
gr-qc/0605131 | Hirotaka Yoshino | Hirotaka Yoshino, Robert B. Mann | Black hole formation in the head-on collision of ultrarelativistic
charges | 24 pages, 6 figures, published version | Phys.Rev. D74 (2006) 044003 | 10.1103/PhysRevD.74.044003 | null | gr-qc hep-ph hep-th | null | We study black hole formation in the head-on collision of ultrarelativistic
charges. The metric of charged particles is obtained by boosting the
Reissner-Nordstr\"om spacetime to the speed of light. Using the slice at the
instant of collision, we study formation of the apparent horizon (AH) and
derive a condition ind... | [
{
"created": "Fri, 26 May 2006 14:11:14 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Jul 2006 14:51:28 GMT",
"version": "v2"
},
{
"created": "Sat, 5 Aug 2006 07:46:17 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Yoshino",
"Hirotaka",
""
],
[
"Mann",
"Robert B.",
""
]
] | We study black hole formation in the head-on collision of ultrarelativistic charges. The metric of charged particles is obtained by boosting the Reissner-Nordstr\"om spacetime to the speed of light. Using the slice at the instant of collision, we study formation of the apparent horizon (AH) and derive a condition indic... |
2111.02404 | Wenshuai Liu | Wenshuai Liu | Detection of extremely low frequency gravitational wave using
gravitational lens: The general case | 4 pages, 1 figure. Submitted to Physical Review D. arXiv admin note:
text overlap with arXiv:2111.02007 | null | null | null | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effect of gravitational wave of extremely low frequency on time delays
between different locations on the Einstein ring in a lens system with an
aligned source-deflector-observer configuration is investigated. The observer
will observe an Einstein ring from the lens system aligned in a highly
symmetric configurat... | [
{
"created": "Wed, 3 Nov 2021 04:07:35 GMT",
"version": "v1"
}
] | 2021-11-05 | [
[
"Liu",
"Wenshuai",
""
]
] | The effect of gravitational wave of extremely low frequency on time delays between different locations on the Einstein ring in a lens system with an aligned source-deflector-observer configuration is investigated. The observer will observe an Einstein ring from the lens system aligned in a highly symmetric configuratio... |
gr-qc/0511048 | Yosef Zlochower | M. Campanelli, C. O. Lousto, P. Marronetti, Y. Zlochower | Accurate Evolutions of Orbiting Black-Hole Binaries Without Excision | 4 pages, revtex4, 3 figs, references added, typos fixed | Phys.Rev.Lett.96:111101,2006 | 10.1103/PhysRevLett.96.111101 | null | gr-qc astro-ph | null | We present a new algorithm for evolving orbiting black-hole binaries that
does not require excision or a corotating shift. Our algorithm is based on a
novel technique to handle the singular puncture conformal factor. This system,
based on the BSSN formulation of Einstein's equations, when used with a
`pre-collapsed' ... | [
{
"created": "Wed, 9 Nov 2005 20:30:35 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Nov 2005 22:32:10 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Campanelli",
"M.",
""
],
[
"Lousto",
"C. O.",
""
],
[
"Marronetti",
"P.",
""
],
[
"Zlochower",
"Y.",
""
]
] | We present a new algorithm for evolving orbiting black-hole binaries that does not require excision or a corotating shift. Our algorithm is based on a novel technique to handle the singular puncture conformal factor. This system, based on the BSSN formulation of Einstein's equations, when used with a `pre-collapsed' in... |
2202.09382 | Katerina Chatziioannou | Marcella Wijngaarden, Katerina Chatziioannou, Andreas Bauswein, James
A. Clark, Neil J. Cornish | Probing neutron stars with the full pre-merger and post-merger
gravitational wave signal from binary coalescences | 18 pages, 17 figures, final published version | null | 10.1103/PhysRevD.105.104019 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The gravitational wave signal emitted during the coalescence of two neutron
stars carries information about the stars' internal structure. During the long
inspiral phase the main matter observable is the tidal interaction between the
binary components, an effect that can be parametrically modeled with
compact-binary ... | [
{
"created": "Fri, 18 Feb 2022 19:06:05 GMT",
"version": "v1"
},
{
"created": "Wed, 11 May 2022 18:48:30 GMT",
"version": "v2"
}
] | 2022-05-13 | [
[
"Wijngaarden",
"Marcella",
""
],
[
"Chatziioannou",
"Katerina",
""
],
[
"Bauswein",
"Andreas",
""
],
[
"Clark",
"James A.",
""
],
[
"Cornish",
"Neil J.",
""
]
] | The gravitational wave signal emitted during the coalescence of two neutron stars carries information about the stars' internal structure. During the long inspiral phase the main matter observable is the tidal interaction between the binary components, an effect that can be parametrically modeled with compact-binary so... |
gr-qc/9710069 | Roberto A. Sussman | Roberto A. Sussman | Ideal gas sources for the Lemaitre-Tolman-Bondi metrics | 7 pages, Plain TeX with IOP macros, important corrections to previous
version, 3 figures (to appear in Classical and Quantum Gravity, June 1998) | null | 10.1088/0264-9381/15/6/023 | null | gr-qc astro-ph physics.flu-dyn | null | New exact solutions emerge by replacing the dust source of the
Lem\^aitre-Tolman-Bondi metrics with a viscous fluid satisfying the monatomic
gas equation of state. The solutions have a consistent thermodynamical
interpretation. The most general transport equation of Extended Irreversible
Thermodynamics is satisfied, ... | [
{
"created": "Tue, 14 Oct 1997 01:50:06 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Mar 1998 23:36:51 GMT",
"version": "v2"
}
] | 2009-10-30 | [
[
"Sussman",
"Roberto A.",
""
]
] | New exact solutions emerge by replacing the dust source of the Lem\^aitre-Tolman-Bondi metrics with a viscous fluid satisfying the monatomic gas equation of state. The solutions have a consistent thermodynamical interpretation. The most general transport equation of Extended Irreversible Thermodynamics is satisfied, wi... |
0707.3341 | Lukasz Andrzej Glinka | Lukasz-Andrzej Glinka | Quantum Information from Graviton-Matter Gas | This is a contribution to the Proc. of the Seventh International
Conference ''Symmetry in Nonlinear Mathematical Physics'' (June 24-30, 2007,
Kyiv, Ukraine), published in SIGMA (Symmetry, Integrability and Geometry:
Methods and Applications) at http://www.emis.de/journals/SIGMA/ | SIGMA 3:087,2007 | 10.3842/SIGMA.2007.087 | null | gr-qc cond-mat.stat-mech hep-th math-ph math.MP quant-ph | null | We present basics of conceptually new-type way for explaining of the origin,
evolution and current physical properties of our Universe from the
graviton-matter gas viewpoint. Quantization method for the Friedmann-Lemaitre
Universe based on the canonical Hamilton equations of motion is proposed and
quantum information... | [
{
"created": "Mon, 23 Jul 2007 09:06:48 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jul 2007 17:18:16 GMT",
"version": "v2"
},
{
"created": "Sat, 28 Jul 2007 13:25:12 GMT",
"version": "v3"
},
{
"created": "Mon, 20 Aug 2007 15:11:57 GMT",
"version": "v4"
},
{
"c... | 2008-12-19 | [
[
"Glinka",
"Lukasz-Andrzej",
""
]
] | We present basics of conceptually new-type way for explaining of the origin, evolution and current physical properties of our Universe from the graviton-matter gas viewpoint. Quantization method for the Friedmann-Lemaitre Universe based on the canonical Hamilton equations of motion is proposed and quantum information t... |
1410.4043 | Sunil Maharaj | Sushant G. Ghosh, Sunil D. Maharaj | Radiating Kerr-like regular black hole | 9 pages. arXiv admin note: text overlap with arXiv:1208.3028 | Eur. Phys. J. C 75, 7 (2015) | 10.1140/epjc/s10052-014-3222-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive a radiating regular rotating black hole solution, radiating
Kerr-like regular black hole solution. We achieve this by starting from the
Hayward regular black hole solution via a complex transformation suggested by
Newman-Janis. The radiating Kerr metric, the Kerr-like regular black hole and
the standard Ker... | [
{
"created": "Wed, 15 Oct 2014 12:49:13 GMT",
"version": "v1"
}
] | 2015-12-31 | [
[
"Ghosh",
"Sushant G.",
""
],
[
"Maharaj",
"Sunil D.",
""
]
] | We derive a radiating regular rotating black hole solution, radiating Kerr-like regular black hole solution. We achieve this by starting from the Hayward regular black hole solution via a complex transformation suggested by Newman-Janis. The radiating Kerr metric, the Kerr-like regular black hole and the standard Kerr ... |
1905.00818 | Patricia Schmidt | Patricia Schmidt, Tanja Hinderer | Frequency domain model of $f$-mode dynamic tides in gravitational
waveforms from compact binary inspirals | 7 pages, 3 figures; matches published version | Phys. Rev. D 100, 021501 (2019) | 10.1103/PhysRevD.100.021501 | LIGO-P1900130 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recent detection of gravitational waves (GWs) from the neutron star
binary inspiral GW170817 has opened a unique avenue to probe matter and
fundamental interactions in previously unexplored regimes. Extracting
information on neutron star matter from the observed GWs requires robust and
computationally efficient t... | [
{
"created": "Thu, 2 May 2019 15:48:59 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Oct 2019 08:48:58 GMT",
"version": "v2"
}
] | 2019-10-07 | [
[
"Schmidt",
"Patricia",
""
],
[
"Hinderer",
"Tanja",
""
]
] | The recent detection of gravitational waves (GWs) from the neutron star binary inspiral GW170817 has opened a unique avenue to probe matter and fundamental interactions in previously unexplored regimes. Extracting information on neutron star matter from the observed GWs requires robust and computationally efficient the... |
gr-qc/0201090 | B. V. Ivanov | B.V.Ivanov | Maximum bounds on the surface redshift of anisotropic stars | 5 pages, Revtex, journal version, accepted in Phys. Rev. D | Phys.Rev. D65 (2002) 104011 | 10.1103/PhysRevD.65.104011 | null | gr-qc astro-ph | null | It is shown that for realistic anisotropic star models the surface redshift
can not exceed the values 3.842 or 5.211 when the tangential pressure satisfies
the strong or the dominant energy condition respectively. Both values are
higher than 2, the bound in the perfect fluid case.
| [
{
"created": "Tue, 29 Jan 2002 10:54:52 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Mar 2002 13:21:35 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Ivanov",
"B. V.",
""
]
] | It is shown that for realistic anisotropic star models the surface redshift can not exceed the values 3.842 or 5.211 when the tangential pressure satisfies the strong or the dominant energy condition respectively. Both values are higher than 2, the bound in the perfect fluid case. |
0706.0283 | Tomasz Stachowiak | Marek Szydlowski, Wlodzimierz Godlowski, Tomasz Stachowiak | Testing and selection of cosmological models with $(1+z)^6$ corrections | 19 pages, 1 figure. Version 2 generally revised and accepted for
publication | Phys.Rev.D77:043530,2008 | 10.1103/PhysRevD.77.043530 | null | gr-qc | null | In the paper we check whether the contribution of $(-)(1+z)^6$ type in the
Friedmann equation can be tested. We consider some astronomical tests to
constrain the density parameters in such models. We describe different
interpretations of such an additional term: geometric effects of Loop Quantum
Cosmology, effects of... | [
{
"created": "Sat, 2 Jun 2007 18:42:54 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Mar 2008 18:20:33 GMT",
"version": "v2"
},
{
"created": "Tue, 11 Mar 2008 12:13:20 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Szydlowski",
"Marek",
""
],
[
"Godlowski",
"Wlodzimierz",
""
],
[
"Stachowiak",
"Tomasz",
""
]
] | In the paper we check whether the contribution of $(-)(1+z)^6$ type in the Friedmann equation can be tested. We consider some astronomical tests to constrain the density parameters in such models. We describe different interpretations of such an additional term: geometric effects of Loop Quantum Cosmology, effects of b... |
gr-qc/9303006 | null | Sean A. Hayward | General Laws of Black-Hole Dynamics | 16 pages | null | 10.1103/PhysRevD.49.6467 | null | gr-qc | null | A general definition of a black hole is given, and general `laws of
black-hole dynamics' derived. The definition involves something similar to an
apparent horizon, a trapping horizon, defined as a hypersurface foliated by
marginal surfaces of one of four non-degenerate types, described as future or
past, and outer or... | [
{
"created": "Tue, 2 Mar 1993 15:27:53 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Mar 1993 14:51:54 GMT",
"version": "v2"
},
{
"created": "Wed, 25 May 1994 06:08:20 GMT",
"version": "v3"
}
] | 2009-10-22 | [
[
"Hayward",
"Sean A.",
""
]
] | A general definition of a black hole is given, and general `laws of black-hole dynamics' derived. The definition involves something similar to an apparent horizon, a trapping horizon, defined as a hypersurface foliated by marginal surfaces of one of four non-degenerate types, described as future or past, and outer or i... |
gr-qc/9710056 | Dr John W. Barrett | John W. Barrett, Martin Rocek, Ruth M. Williams | A note on area variables in Regge calculus | 4 pages, amstex. Revision has minor changes and more precise
conclusions | Class.Quant.Grav. 16 (1999) 1373-1376 | 10.1088/0264-9381/16/4/025 | ITP-SB-97-59 | gr-qc | null | We consider the possibility of setting up a new version of Regge calculus in
four dimensions with areas of triangles as the basic variables rather than the
edge-lengths. The difficulties and restrictions of this approach are discussed.
| [
{
"created": "Fri, 10 Oct 1997 08:53:21 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Feb 1999 10:38:54 GMT",
"version": "v2"
}
] | 2009-10-30 | [
[
"Barrett",
"John W.",
""
],
[
"Rocek",
"Martin",
""
],
[
"Williams",
"Ruth M.",
""
]
] | We consider the possibility of setting up a new version of Regge calculus in four dimensions with areas of triangles as the basic variables rather than the edge-lengths. The difficulties and restrictions of this approach are discussed. |
gr-qc/9412063 | Thibault Damour | T. Damour | Photon rockets and gravitational radiation | 21 pages, LATEX, submitted to Class. Quant. Grav | Class.Quant.Grav.12:725-738,1995 | 10.1088/0264-9381/12/3/011 | IHES/P/94/60 | gr-qc | null | The absence of gravitational radiation in Kinnersley's ``photon rocket''
solution of Einstein's equations is clarified by studying the mathematically
well-defined problem of point-like photon rockets in Minkowski space (i.e.
massive particles emitting null fluid anisotro\-pically and accelerating
because of the recoi... | [
{
"created": "Wed, 21 Dec 1994 09:58:33 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Damour",
"T.",
""
]
] | The absence of gravitational radiation in Kinnersley's ``photon rocket'' solution of Einstein's equations is clarified by studying the mathematically well-defined problem of point-like photon rockets in Minkowski space (i.e. massive particles emitting null fluid anisotro\-pically and accelerating because of the recoil)... |
1907.12968 | Nasr Ahmed | Nasr Ahmed and Anirudh Pradhan | Crossing the phantom divide line in universal extra dimensions | 9 pages, 6 figures, 1 table | null | 10.1016/j.newast.2020.101406 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the cosmic acceleration and the evolution of dark energy
across the cosmological constant boundary in universal extra dimensions UED. We
adopt an empirical approach to solve the higher-dimensional cosmological
equations so that the deceleration parameter $q$ is consistent with
observations. The express... | [
{
"created": "Mon, 29 Jul 2019 13:32:13 GMT",
"version": "v1"
},
{
"created": "Sat, 28 Dec 2019 15:33:44 GMT",
"version": "v2"
}
] | 2020-05-27 | [
[
"Ahmed",
"Nasr",
""
],
[
"Pradhan",
"Anirudh",
""
]
] | We investigate the cosmic acceleration and the evolution of dark energy across the cosmological constant boundary in universal extra dimensions UED. We adopt an empirical approach to solve the higher-dimensional cosmological equations so that the deceleration parameter $q$ is consistent with observations. The expressio... |
2205.04761 | Yang Zhang | Xuan Ye, Yang Zhang and Bo Wang | Point-splitting regularization of the stress tensor of a coupling scalar
field in de Sitter space | 33 pages, 22 figures, published | JCAP 09 (2022) 020 | 10.1088/1475-7516/2022/09/020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform the point-splitting regularization on the vacuum stress tensor of
a coupling scalar field in de Sitter space under the guidance from the
adiabatically regularized Green's function. For the massive scalar field with
the minimal coupling $\xi=0$, the 2nd order point-splitting regularization
yields a finite v... | [
{
"created": "Tue, 10 May 2022 09:15:29 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Sep 2022 11:47:24 GMT",
"version": "v2"
}
] | 2022-09-13 | [
[
"Ye",
"Xuan",
""
],
[
"Zhang",
"Yang",
""
],
[
"Wang",
"Bo",
""
]
] | We perform the point-splitting regularization on the vacuum stress tensor of a coupling scalar field in de Sitter space under the guidance from the adiabatically regularized Green's function. For the massive scalar field with the minimal coupling $\xi=0$, the 2nd order point-splitting regularization yields a finite vac... |
1601.01215 | Muhammad Sharif | M. Sharif and Iqra Nawazish | Study of Some Chaotic Inflationary Models in f(R) Gravity | 26 pages, 7 figures, final accepted version | Astrophys. Space Sci. 363(2018)73 | 10.1007/s10509-018-3292-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we discuss inflationary scenario via scalar field and fluid
cosmology for anisotropic homogeneous universe model in $f(R)$ gravity. We
consider an equation of state which corresponds to quasi-de Sitter expansion
and investigate the effect of anisotropy parameter for different values of
deviation parame... | [
{
"created": "Fri, 1 Jan 2016 04:57:05 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Apr 2018 02:37:43 GMT",
"version": "v2"
}
] | 2018-04-11 | [
[
"Sharif",
"M.",
""
],
[
"Nawazish",
"Iqra",
""
]
] | In this paper, we discuss inflationary scenario via scalar field and fluid cosmology for anisotropic homogeneous universe model in $f(R)$ gravity. We consider an equation of state which corresponds to quasi-de Sitter expansion and investigate the effect of anisotropy parameter for different values of deviation paramete... |
0906.1981 | Leonardo Fernandez-Jambrina | L. Fern\'andez-Jambrina | Multipole corrections to perihelion and node line precession | 5 pp, sprocl.sty, Proceedings of ERE'00 | null | 10.1142/9789812810021_0029 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this talk relativistic corrections due to Geroch-Hansen multipoles for
perihelion precession and node line precession of orbits in a stationary
axially symmetric vacuum spacetime endowed with a plane of symmetry will be
shown. Patterns of regularity will be discussed.
| [
{
"created": "Wed, 10 Jun 2009 17:37:36 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Fernández-Jambrina",
"L.",
""
]
] | In this talk relativistic corrections due to Geroch-Hansen multipoles for perihelion precession and node line precession of orbits in a stationary axially symmetric vacuum spacetime endowed with a plane of symmetry will be shown. Patterns of regularity will be discussed. |
1506.02498 | Saibal Ray | S.K. Maurya, Y.K. Gupta, Saibal Ray and Sourav Roy Chowdhury | Spherically symmetric electromagnetic mass models of embedding class one | 21 pages, 9 figures, 2 tables | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we consider the static spherically symmetric spacetime metric
of embedding class one. Specifically three new electromagnetic mass models are
derived where the solutions are entirely dependent on the electromagnetic
field, such that the physical parameters, like density, pressure etc. do vanish
for the... | [
{
"created": "Sat, 30 May 2015 18:15:51 GMT",
"version": "v1"
}
] | 2015-06-09 | [
[
"Maurya",
"S. K.",
""
],
[
"Gupta",
"Y. K.",
""
],
[
"Ray",
"Saibal",
""
],
[
"Chowdhury",
"Sourav Roy",
""
]
] | In this article we consider the static spherically symmetric spacetime metric of embedding class one. Specifically three new electromagnetic mass models are derived where the solutions are entirely dependent on the electromagnetic field, such that the physical parameters, like density, pressure etc. do vanish for the v... |
1808.05280 | Joseph Rizcallah | Vladimir V. Kassandrov, Joseph A. Rizcallah and Nina V. Markova | Twistor structures and boost-invariant solutions to field equations | 10 pages, 1 figure | Gravitation and Cosmology, Vol. 23, No. 4, 300-304 (2017) | 10.1134/S0202289317040119 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a brief overview of a non-Lagrangian approach to field theory based
on a generalization of the Kerr-Penrose theorem and algebraic twistor
equations. Explicit algorithms for obtaining the set of fundamental (Maxwell,
SL(2, C)-Yang-Mills, spinor Weyl and curvature) fields associated with every
solution of the b... | [
{
"created": "Wed, 15 Aug 2018 20:25:15 GMT",
"version": "v1"
}
] | 2018-08-17 | [
[
"Kassandrov",
"Vladimir V.",
""
],
[
"Rizcallah",
"Joseph A.",
""
],
[
"Markova",
"Nina V.",
""
]
] | We give a brief overview of a non-Lagrangian approach to field theory based on a generalization of the Kerr-Penrose theorem and algebraic twistor equations. Explicit algorithms for obtaining the set of fundamental (Maxwell, SL(2, C)-Yang-Mills, spinor Weyl and curvature) fields associated with every solution of the bas... |
gr-qc/9311006 | I. Racz | Istvan Racz | On Einstein's equations for spacetimes admitting a non-null Killing
field | 23 pages, TeX | J.Math.Phys. 38 (1997) 4237-4254 | 10.1063/1.532092 | ESI Preprint Series No. 168/94 | gr-qc | null | We consider the 3-dimensional formulation of Einstein's theory for spacetimes
possessing a non-null Killing field $\xi^a$. It is known that for the vacuum
case some of the basic field equations are deducible from the others. It will
be shown here how this result can be generalized for the case of essentially
arbitrar... | [
{
"created": "Thu, 4 Nov 1993 14:06:00 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Sep 1997 02:27:15 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Racz",
"Istvan",
""
]
] | We consider the 3-dimensional formulation of Einstein's theory for spacetimes possessing a non-null Killing field $\xi^a$. It is known that for the vacuum case some of the basic field equations are deducible from the others. It will be shown here how this result can be generalized for the case of essentially arbitrary ... |
2103.14087 | S. I. Kruglov | S. I. Kruglov | Remarks on nonsingular models of Hayward and magnetized black hole with
rational nonlinear electrodynamics | 16 pages, 6 figures, 1 table, published in Gravitation and Cosmology | Gravitation and Cosmology, 2021, Vol. 27, No. 1, pp. 78-84 | 10.1134/S0202289321010126 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Hayward black hole and magnetically charged black hole based on rational
nonlinear electrodynamics with the Lagrangian ${\cal L} = -{\cal
F}/(1+2\beta{\cal F})$ (${\cal F}$ is a field invariant) are considered. It was
shown that the metric function in both models possesses a de Sitter core
without singularities as ... | [
{
"created": "Thu, 25 Mar 2021 19:05:26 GMT",
"version": "v1"
}
] | 2023-11-28 | [
[
"Kruglov",
"S. I.",
""
]
] | A Hayward black hole and magnetically charged black hole based on rational nonlinear electrodynamics with the Lagrangian ${\cal L} = -{\cal F}/(1+2\beta{\cal F})$ (${\cal F}$ is a field invariant) are considered. It was shown that the metric function in both models possesses a de Sitter core without singularities as $r... |
1909.01278 | Tim Dietrich | Tim Dietrich and Katy Clough | Cooling binary neutron star remnants via nucleon-nucleon-axion
bremsstrahlung | null | Phys. Rev. D 100, 083005 (2019) | 10.1103/PhysRevD.100.083005 | null | gr-qc astro-ph.HE hep-ph nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The QCD axion is a hypothetical particle motivated by the Strong CP problem
of particle physics. One of the primary ways in which its existence can be
inferred is via its function as an additional cooling channel in stars, with
some of the strongest constraints coming from the supernova observation
SN1987A. Multimess... | [
{
"created": "Tue, 3 Sep 2019 16:19:23 GMT",
"version": "v1"
}
] | 2019-10-16 | [
[
"Dietrich",
"Tim",
""
],
[
"Clough",
"Katy",
""
]
] | The QCD axion is a hypothetical particle motivated by the Strong CP problem of particle physics. One of the primary ways in which its existence can be inferred is via its function as an additional cooling channel in stars, with some of the strongest constraints coming from the supernova observation SN1987A. Multimessen... |
1812.04753 | Chul-Moon Yoo | Chul-Moon Yoo and Ken-ichi Nakao | Constant-mean-curvature Slicing of the Swiss-cheese Universe | 14 pages, 1 figure | Gen.Rel.Grav. 51 (2019) no.9, 114 | 10.1007/s10714-019-2596-0 | OCU-PHYS 493, AP-GR 152, NITEP 4 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A sequence of Constant-Mean-Curvature(CMC) slices in the Swiss-Cheese(SC)
Universe is investigated. We focus on the CMC slices which smoothly connect to
the homogeneous time slices in the Einstein-de Sitter region in the SC
universe. It is shown that the slices do not pass through the black hole region
but white hole... | [
{
"created": "Wed, 12 Dec 2018 00:35:55 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Sep 2019 00:50:36 GMT",
"version": "v2"
}
] | 2019-09-11 | [
[
"Yoo",
"Chul-Moon",
""
],
[
"Nakao",
"Ken-ichi",
""
]
] | A sequence of Constant-Mean-Curvature(CMC) slices in the Swiss-Cheese(SC) Universe is investigated. We focus on the CMC slices which smoothly connect to the homogeneous time slices in the Einstein-de Sitter region in the SC universe. It is shown that the slices do not pass through the black hole region but white hole r... |
gr-qc/0204063 | Ettore Minguzzi | E. Minguzzi | Simultaneity and generalized connections in general relativity | RevTeX, 9 pages, 2 figures, 1 table. Previous title "The gauge nature
of simultaneity". Classical and Quantum Gravity
http://www.iop.org/EJ/journal/CQG | Class.Quant.Grav. 20 (2003) 2443-2456 | 10.1088/0264-9381/20/11/332 | null | gr-qc | null | Stationary extended frames in general relativity are considered. The
requirement of stationarity allows to treat the spacetime as a principal fiber
bundle over the one-dimensional group of time translations. Over this bundle a
connection form establishes the simultaneity between neighboring events
accordingly with th... | [
{
"created": "Fri, 19 Apr 2002 13:18:17 GMT",
"version": "v1"
},
{
"created": "Fri, 23 May 2003 12:23:03 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Minguzzi",
"E.",
""
]
] | Stationary extended frames in general relativity are considered. The requirement of stationarity allows to treat the spacetime as a principal fiber bundle over the one-dimensional group of time translations. Over this bundle a connection form establishes the simultaneity between neighboring events accordingly with the ... |
1804.11230 | Scientific Information Service CERN | V.A. Rubakov (Moscow, INR and Moscow State U.) | Cosmology | 56 pages, presented at the 2nd Asia-Europe-Pacific School of
High-Energy Physics, Puri, India, 04 - 17 Nov 2014. arXiv admin note:
substantial text overlap with arXiv:1504.03587 | CERN Yellow Report CERN-2017-005-SP pp. 239-294 | 10.23730/CYRSP-2017-002.239 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | Cosmology and particle physics are deeply interrelated. Among the common
problems are dark energy, dark matter and baryon asymmetry of the Universe. We
discuss these problems in general terms, and concentrate on several particular
hypotheses. On the dark matter side, we consider weakly interacting massive
particles a... | [
{
"created": "Mon, 30 Apr 2018 14:30:16 GMT",
"version": "v1"
}
] | 2018-05-01 | [
[
"Rubakov",
"V. A.",
"",
"Moscow, INR and Moscow State U."
]
] | Cosmology and particle physics are deeply interrelated. Among the common problems are dark energy, dark matter and baryon asymmetry of the Universe. We discuss these problems in general terms, and concentrate on several particular hypotheses. On the dark matter side, we consider weakly interacting massive particles and... |
0711.4416 | Silke Weinfurtner | Silke Weinfurtner | Emergent spacetimes | PhD thesis at Victoria University of Wellington, New Zealand
(Advisor: Prof. Matt Visser), 234 pages | null | null | null | gr-qc | null | We discuss the possibility that spacetime geometry may be an emergent
phenomenon. This idea has been motivated by the Analogue Gravity programme.
These are systems where the kinematics of small perturbations are dominated by
an effective gravitational field. In these models there is no obvious
connection between the ... | [
{
"created": "Wed, 28 Nov 2007 03:56:46 GMT",
"version": "v1"
}
] | 2007-11-29 | [
[
"Weinfurtner",
"Silke",
""
]
] | We discuss the possibility that spacetime geometry may be an emergent phenomenon. This idea has been motivated by the Analogue Gravity programme. These are systems where the kinematics of small perturbations are dominated by an effective gravitational field. In these models there is no obvious connection between the "g... |
1609.06891 | Edward Wilson-Ewing | Stefano Bianco, Victor Nicolai Friedhoff, Edward Wilson-Ewing | Modified dispersion relations, inflation and scale invariance | 9 pages. v2: Clarifications and references added | Phys. Rev. D 97, 046006 (2018) | 10.1103/PhysRevD.97.046006 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For a certain type of modified dispersion relations, the vacuum quantum state
for very short wavelength cosmological perturbations is scale-invariant and it
has been suggested that this may be the source of the scale-invariance observed
in the temperature anisotropies in the cosmic microwave background. We point
out ... | [
{
"created": "Thu, 22 Sep 2016 10:05:34 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Feb 2018 14:50:54 GMT",
"version": "v2"
}
] | 2018-02-28 | [
[
"Bianco",
"Stefano",
""
],
[
"Friedhoff",
"Victor Nicolai",
""
],
[
"Wilson-Ewing",
"Edward",
""
]
] | For a certain type of modified dispersion relations, the vacuum quantum state for very short wavelength cosmological perturbations is scale-invariant and it has been suggested that this may be the source of the scale-invariance observed in the temperature anisotropies in the cosmic microwave background. We point out th... |
1603.06641 | Andre Landulfo | Andre G. S. Landulfo | Nonperturbative approach to relativistic quantum communication channels | 12 pages, Reference added, typos corrected. Minor changes to match
the published version | Phys. Rev. D 93, 104019 (2016) | 10.1103/PhysRevD.93.104019 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the transmission of both classical and quantum information
between two arbitrary observers in globally hyperbolic spacetimes using a
quantum field as a communication channel. The field is supposed to be in some
arbitrary quasifree state and no choice of representation of its canonical
commutation relat... | [
{
"created": "Mon, 21 Mar 2016 22:58:34 GMT",
"version": "v1"
},
{
"created": "Mon, 2 May 2016 15:03:44 GMT",
"version": "v2"
},
{
"created": "Tue, 10 May 2016 21:30:19 GMT",
"version": "v3"
}
] | 2016-05-12 | [
[
"Landulfo",
"Andre G. S.",
""
]
] | We investigate the transmission of both classical and quantum information between two arbitrary observers in globally hyperbolic spacetimes using a quantum field as a communication channel. The field is supposed to be in some arbitrary quasifree state and no choice of representation of its canonical commutation relatio... |
1706.07379 | Martin Bojowald | Martin Bojowald, Suddhasattwa Brahma and Juan D. Reyes | Comment on "New variables for 1+1 dimensional gravity" | 4 pages | Class. Quantum Grav. 34 (2017) 138001 | 10.1088/1361-6382/aa7011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The results reported by Gambini, Pullin and Rastgoo in (2010 Class. Quantum
Grav. 27 025002) are special cases of a general treatment of canonical
variables for dilaton gravity models published in (2009 Class. Quantum Grav. 26
035018).
| [
{
"created": "Thu, 22 Jun 2017 16:04:01 GMT",
"version": "v1"
}
] | 2017-06-28 | [
[
"Bojowald",
"Martin",
""
],
[
"Brahma",
"Suddhasattwa",
""
],
[
"Reyes",
"Juan D.",
""
]
] | The results reported by Gambini, Pullin and Rastgoo in (2010 Class. Quantum Grav. 27 025002) are special cases of a general treatment of canonical variables for dilaton gravity models published in (2009 Class. Quantum Grav. 26 035018). |
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