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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2203.04477 | Wei-Liang Qian | Wei-Liang Qian and Kai Lin and Cai-Ying Shao and Bin Wang and Rui-Hong
Yue | On the late-time tails of massive perturbations in spherically symmetric
black holes | 18 pages, 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was first pointed out by Koyama and Tomimatsu that, under reasonable
assumptions, the asymptotic late-time tails of massive scalar perturbations in
the far zone of spherically symmetric black hole spacetimes decays universally
as $t^{-5/6}$. The late-time tail is furnished by the contribution from the
branch cut o... | [
{
"created": "Wed, 9 Mar 2022 01:37:21 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Oct 2022 21:35:15 GMT",
"version": "v2"
}
] | 2022-10-18 | [
[
"Qian",
"Wei-Liang",
""
],
[
"Lin",
"Kai",
""
],
[
"Shao",
"Cai-Ying",
""
],
[
"Wang",
"Bin",
""
],
[
"Yue",
"Rui-Hong",
""
]
] | It was first pointed out by Koyama and Tomimatsu that, under reasonable assumptions, the asymptotic late-time tails of massive scalar perturbations in the far zone of spherically symmetric black hole spacetimes decays universally as $t^{-5/6}$. The late-time tail is furnished by the contribution from the branch cut of ... |
gr-qc/0106081 | Oscar J. C. Dias | Oscar J. C. Dias | Pair creation of particles and black holes in external fields | LaTeX file (World Scientific macros), no figures, 9 pages, talk given
at Xth Portuguese Meeting on Astronomy and Astrophysics, (Lisbon, Portugal,
27-28 July 2000), to be published in Proc. Xth A & A meeting, edited by J. P.
S. Lemos, A. Mourao, L. Teodoro, R. Ugoccioni, (World Scientific, 2001) | null | 10.1142/9789812811110_0013 | null | gr-qc | null | It is well known that massive black holes may form through the gravitational
collapse of a massive astrophysical body. Less known is the fact that a black
hole can be produced by the quantum process of pair creation in external
fields. These black holes may have a mass much lower than their astrophysical
counterparts... | [
{
"created": "Tue, 26 Jun 2001 11:46:12 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Dias",
"Oscar J. C.",
""
]
] | It is well known that massive black holes may form through the gravitational collapse of a massive astrophysical body. Less known is the fact that a black hole can be produced by the quantum process of pair creation in external fields. These black holes may have a mass much lower than their astrophysical counterparts. ... |
gr-qc/0605125 | Feng Luo | Feng Luo, Hongya Liu | Exploring Extra Dimensions in Spectroscopy Experiments | 8 pages, 2 figures | Chin.Phys.Lett. 23 (2006) 2903 | 10.1088/0256-307X/23/11/006 | null | gr-qc | null | We propose an idea in spectroscopy to search for extra spatial dimensions as
well as to detect the possible deviation from Newton's inverse-square law at
small scale, and we take high-Z hydrogenic systems and muonic atoms as
illustrations. The relevant experiments might help to explore more than two
extra dimensions ... | [
{
"created": "Wed, 24 May 2006 15:09:02 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Luo",
"Feng",
""
],
[
"Liu",
"Hongya",
""
]
] | We propose an idea in spectroscopy to search for extra spatial dimensions as well as to detect the possible deviation from Newton's inverse-square law at small scale, and we take high-Z hydrogenic systems and muonic atoms as illustrations. The relevant experiments might help to explore more than two extra dimensions sc... |
2305.09544 | Camilo Posada PhD | Philip Beltracchi and Camilo Posada | Slowly rotating ultracompact Schwarzschild star in the gravastar limit | Matches the published version in CQG | Class. Quantum Grav. 41 (2024) 045001 | 10.1088/1361-6382/ad1a52 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reconsider the problem of a slowly rotating homogeneous star, or
Schwarzschild star, when its compactness goes beyond the Buchdahl bound and
approaches the gravastar limit $R\to 2M$. We compute surface and integral
properties of such configuration by integrating the Hartle-Thorne structure
equations for slowly rot... | [
{
"created": "Tue, 16 May 2023 15:39:38 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Dec 2023 01:21:46 GMT",
"version": "v2"
},
{
"created": "Fri, 19 Jan 2024 19:39:33 GMT",
"version": "v3"
}
] | 2024-01-23 | [
[
"Beltracchi",
"Philip",
""
],
[
"Posada",
"Camilo",
""
]
] | We reconsider the problem of a slowly rotating homogeneous star, or Schwarzschild star, when its compactness goes beyond the Buchdahl bound and approaches the gravastar limit $R\to 2M$. We compute surface and integral properties of such configuration by integrating the Hartle-Thorne structure equations for slowly rotat... |
1301.4920 | Jose Manuel Velhinho | Jeronimo Cortez, Daniel Martin-de Blas, Guillermo A. Mena Marugan,
Jose M. Velhinho | Massless scalar field in de Sitter spacetime: unitary quantum time
evolution | 23 pages. Typos corrected, matches published version | Class. Quantum Grav. 30 (2013) 075015 | 10.1088/0264-9381/30/7/075015 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that, under the standard conformal scaling, a massless field in de
Sitter spacetime admits an O(4)-invariant Fock quantization such that time
evolution is unitarily implemented. This result disproves previous claims in
the literature. We discuss the relationship between this quantization with
unitary dynamic... | [
{
"created": "Mon, 21 Jan 2013 16:45:39 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Mar 2013 18:17:19 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Cortez",
"Jeronimo",
""
],
[
"Blas",
"Daniel Martin-de",
""
],
[
"Marugan",
"Guillermo A. Mena",
""
],
[
"Velhinho",
"Jose M.",
""
]
] | We prove that, under the standard conformal scaling, a massless field in de Sitter spacetime admits an O(4)-invariant Fock quantization such that time evolution is unitarily implemented. This result disproves previous claims in the literature. We discuss the relationship between this quantization with unitary dynamics ... |
1412.5420 | Muhammad Jamil Amir | M. Jamil Amir and Tahir Nazir | Teleparallel Energy-Momentum Distribution of Locally Rotationally
Symmetric Spacetimes | Accepted in Journal of Korean Physical Society. arXiv admin note:
substantial text overlap with arXiv:0704.2099 | null | 10.3938/jkps.65.1336 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we explore the energy-momentum distribution of locally
rotationally symmetric (LRS) spacetimes in the context of the teleparallel
theory of gravity by considering the three metrics, I, II and III, representing
the whole class of LRS sapcetimes. In this regard, we use the teleparallel
versions of the Ei... | [
{
"created": "Thu, 11 Dec 2014 12:06:05 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Amir",
"M. Jamil",
""
],
[
"Nazir",
"Tahir",
""
]
] | In this paper, we explore the energy-momentum distribution of locally rotationally symmetric (LRS) spacetimes in the context of the teleparallel theory of gravity by considering the three metrics, I, II and III, representing the whole class of LRS sapcetimes. In this regard, we use the teleparallel versions of the Eins... |
gr-qc/9401022 | Henri Waelbroeck | H. Waelbroeck | Canonical Quantization of (2+1)-Dimensional Gravity | 22 pages, Mexico preprint ICN-UNAM-93-14 | Phys.Rev. D50 (1994) 4982-4992 | 10.1103/PhysRevD.50.4982 | null | gr-qc | null | We consider the quantum dynamics of both open and closed two- dimensional
universes with ``wormholes'' and particles. The wave function is given as a sum
of freely propagating amplitudes, emitted from a network of mapping class
images of the initial state. Interference between these amplitudes gives
non-trivial scatt... | [
{
"created": "Thu, 20 Jan 1994 02:09:58 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Waelbroeck",
"H.",
""
]
] | We consider the quantum dynamics of both open and closed two- dimensional universes with ``wormholes'' and particles. The wave function is given as a sum of freely propagating amplitudes, emitted from a network of mapping class images of the initial state. Interference between these amplitudes gives non-trivial scatter... |
gr-qc/0308013 | Pavel Krtous | Jiri Bicak, Petr Hajicek | Canonical theory of spherically symmetric spacetimes with
cross-streaming null dusts | 15 pages, 3 figures, submitted to Phys. Rev. D | Phys.Rev. D68 (2003) 104016 | 10.1103/PhysRevD.68.104016 | null | gr-qc hep-th | null | The Hamiltonian dynamics of two-component spherically symmetric null dust is
studied with regard to the quantum theory of gravitational collapse. The
components--the ingoing and outgoing dusts--are assumed to interact only
through gravitation. Different kinds of singularities, naked or "clothed", that
can form during... | [
{
"created": "Wed, 6 Aug 2003 10:30:53 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Bicak",
"Jiri",
""
],
[
"Hajicek",
"Petr",
""
]
] | The Hamiltonian dynamics of two-component spherically symmetric null dust is studied with regard to the quantum theory of gravitational collapse. The components--the ingoing and outgoing dusts--are assumed to interact only through gravitation. Different kinds of singularities, naked or "clothed", that can form during c... |
1504.07580 | Tomas Andrade | Tomas Andrade, William R. Kelly, Donald Marolf, Jorge E. Santos | On the stability of gravity with Dirichlet walls | 35 pages, 20 figures | null | 10.1088/0264-9381/32/23/235006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dirichlet walls -- timelike boundaries at finite distance from the bulk on
which the induced metric is held fixed -- have been used to model AdS
spacetimes with a finite cutoff. In the context of gauge/gravity duality, such
models are often described as dual to some novel UV-cufoff version of a
corresponding CFT that... | [
{
"created": "Tue, 28 Apr 2015 17:34:48 GMT",
"version": "v1"
}
] | 2015-11-18 | [
[
"Andrade",
"Tomas",
""
],
[
"Kelly",
"William R.",
""
],
[
"Marolf",
"Donald",
""
],
[
"Santos",
"Jorge E.",
""
]
] | Dirichlet walls -- timelike boundaries at finite distance from the bulk on which the induced metric is held fixed -- have been used to model AdS spacetimes with a finite cutoff. In the context of gauge/gravity duality, such models are often described as dual to some novel UV-cufoff version of a corresponding CFT that m... |
2310.08022 | Mustapha Azreg-A\"inou | Mustapha Azreg-A\"inou, Kauntey Acharya, and Pankaj S. Joshi | Joshi--Malafarina--Narayan singularity in weak magnetic field | 12 pages, 3 compound figures, sections added | Eur. Phys. J. C (2024) 84:535 | 10.1140/epjc/s10052-024-12905-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The importance and significance of magnetic fields in the astrophysical
scenario is well known. Many domains of astrophysical black hole physics such
as polarized shadow image, high energy emitting processes and jet formation are
dependent on the behavior of the magnetic fields in the vicinity of the compact
objects.... | [
{
"created": "Thu, 12 Oct 2023 03:43:27 GMT",
"version": "v1"
},
{
"created": "Tue, 21 May 2024 06:50:36 GMT",
"version": "v2"
}
] | 2024-05-30 | [
[
"Azreg-Aïnou",
"Mustapha",
""
],
[
"Acharya",
"Kauntey",
""
],
[
"Joshi",
"Pankaj S.",
""
]
] | The importance and significance of magnetic fields in the astrophysical scenario is well known. Many domains of astrophysical black hole physics such as polarized shadow image, high energy emitting processes and jet formation are dependent on the behavior of the magnetic fields in the vicinity of the compact objects. I... |
gr-qc/0505035 | Mehmet Cem Calik | M.Arik M.C.Calik | Can Brans-Dicke scalar field account for dark energy and dark matter? | revised for typo addition and for one reference change | Mod.Phys.Lett.A21:1241-1248,2006 | 10.1142/S021773230602055X | null | gr-qc | null | By using a linearized non-vacuum late time solution in Brans-Dicke cosmology
we account for the seventy five percent dark energy contribution but not for
approximately twenty-three percent dark matter contribution to the present day
energy density of the universe.
| [
{
"created": "Mon, 9 May 2005 08:39:45 GMT",
"version": "v1"
},
{
"created": "Fri, 13 May 2005 11:39:10 GMT",
"version": "v2"
},
{
"created": "Fri, 21 Apr 2006 08:17:56 GMT",
"version": "v3"
}
] | 2010-11-11 | [
[
"Calik",
"M. Arik M. C.",
""
]
] | By using a linearized non-vacuum late time solution in Brans-Dicke cosmology we account for the seventy five percent dark energy contribution but not for approximately twenty-three percent dark matter contribution to the present day energy density of the universe. |
1603.00853 | Cassius de Melo | R. Casana, C. A. M. de Melo and B. M. Pimentel | Electromagnetic Field in Lyra Manifold: A First Order Approach | Matches version published ten years ago celebrating 100 years of
Relativity. arXiv admin note: substantial text overlap with
arXiv:gr-qc/0509117 | Braz. J. of Phys. v. 35, n.4B, p. 1151-1154, 2005 | 10.1590/S0103-97332005000700040 | null | gr-qc astro-ph.CO hep-th math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the coupling of the electromagnetic field with a curved and
torsioned Lyra manifold using the Duffin-Kemmer-Petiau theory. We will show how
to obtain the equations of motion and energy-momentum and spin density tensors
by means of the Schwinger Variational Principle.
| [
{
"created": "Wed, 2 Mar 2016 20:27:51 GMT",
"version": "v1"
}
] | 2016-03-09 | [
[
"Casana",
"R.",
""
],
[
"de Melo",
"C. A. M.",
""
],
[
"Pimentel",
"B. M.",
""
]
] | We discuss the coupling of the electromagnetic field with a curved and torsioned Lyra manifold using the Duffin-Kemmer-Petiau theory. We will show how to obtain the equations of motion and energy-momentum and spin density tensors by means of the Schwinger Variational Principle. |
gr-qc/0512083 | Yi Ling | Yi Ling, Bo Hu and Xiang Li | Modified dispersion relations and black hole physics | 4 pages, Revtex. Final version to appear in PRD | Phys.Rev. D73 (2006) 087702 | 10.1103/PhysRevD.73.087702 | null | gr-qc hep-th | null | A modified formulation of energy-momentum relation is proposed in the context
of doubly special relativity. We investigate its impact on black hole physics.
It turns out that such modification will give corrections to both the
temperature and the entropy of black holes. In particular this modified
dispersion relation... | [
{
"created": "Wed, 14 Dec 2005 13:09:32 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Apr 2006 02:17:05 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Ling",
"Yi",
""
],
[
"Hu",
"Bo",
""
],
[
"Li",
"Xiang",
""
]
] | A modified formulation of energy-momentum relation is proposed in the context of doubly special relativity. We investigate its impact on black hole physics. It turns out that such modification will give corrections to both the temperature and the entropy of black holes. In particular this modified dispersion relation a... |
gr-qc/9709057 | Radu Ionicioiu | Radu Ionicioiu (DAMTP, University of Cambridge, UK) | Topology change from Kaluza-Klein dimensions | 5 pages, LaTeX, no figures, uses epsf | null | null | DAMTP-97-105 | gr-qc hep-th | null | In this letter we show that in a Kaluza-Klein framework we can have arbitrary
topology change between the macroscopic (i.e. noncompactified) spacelike
3-hypersurfaces. This is achieved by using the compactified dimensions as a
catalyser for topology change. In the case of odd-dimensional spacetimes (such
as the 11-di... | [
{
"created": "Mon, 22 Sep 1997 17:03:51 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ionicioiu",
"Radu",
"",
"DAMTP, University of Cambridge, UK"
]
] | In this letter we show that in a Kaluza-Klein framework we can have arbitrary topology change between the macroscopic (i.e. noncompactified) spacelike 3-hypersurfaces. This is achieved by using the compactified dimensions as a catalyser for topology change. In the case of odd-dimensional spacetimes (such as the 11-dime... |
2310.01487 | Manuel Hohmann | Manuel Hohmann | Kinetic gases in static spherically symmetric modified dispersion
relations | 15 pages, 4 color figures; journal version | Class.Quant.Grav. 41 no. 1 (2023) 015025 | 10.1088/1361-6382/ad0fba | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the dynamics of a collisionless kinetic gas in the most general
static, spherically symmetric dispersion relation. For a static, spherically
symmetric kinetic gas, we derive the most general solution to these dynamics,
and find that any solution is given by a one-particle distribution function
which depends ... | [
{
"created": "Mon, 2 Oct 2023 18:00:02 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Dec 2023 20:48:58 GMT",
"version": "v2"
}
] | 2023-12-22 | [
[
"Hohmann",
"Manuel",
""
]
] | We study the dynamics of a collisionless kinetic gas in the most general static, spherically symmetric dispersion relation. For a static, spherically symmetric kinetic gas, we derive the most general solution to these dynamics, and find that any solution is given by a one-particle distribution function which depends on... |
gr-qc/0604026 | Parthasarathi Majumdar | Parthasarathi Majumdar | Thermal stability of radiant black holes | Latex2e, 13 pages, 2 eps figures. Contribution to the volume to be
published by the Indian Association for the Cultivation of Science, Kolkata,
India in revered memory of Prof. A. K. Raychaudhuri | null | null | null | gr-qc | null | Beginning with a brief sketch of the derivation of Hawking's theorem of
horizon area increase, based on the Raychaudhuri equation, we go on to discuss
the issue as to whether generic black holes, undergoing Hawking radiation, can
ever remain in stable thermal equilibrium with that radiation. We derive a
universal cri... | [
{
"created": "Thu, 6 Apr 2006 11:12:16 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Majumdar",
"Parthasarathi",
""
]
] | Beginning with a brief sketch of the derivation of Hawking's theorem of horizon area increase, based on the Raychaudhuri equation, we go on to discuss the issue as to whether generic black holes, undergoing Hawking radiation, can ever remain in stable thermal equilibrium with that radiation. We derive a universal crite... |
1103.3826 | Seiju Ohashi | Seiju Ohashi, Tetsuya Shiromizu, Sanjay Jhingan | Spherical collapse of inhomogeneous dust cloud in the Lovelock theory | 11 pages, 2 figures, typos corrected, reference added, appendix
added, accepted for publication in PRD | Phys.Rev.D84:024021,2011 | 10.1103/PhysRevD.84.024021 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study gravitational collapse of a spherically symmetric inhomogeneous dust
cloud in the Lovelock theory without cosmological constant. We show that the
final fate of gravitational collapse in this theory depends on the spacetime
dimensions. In odd dimensions the naked singularities formed are found to be
massive. ... | [
{
"created": "Sun, 20 Mar 2011 02:23:23 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Jul 2011 02:37:15 GMT",
"version": "v2"
}
] | 2011-08-08 | [
[
"Ohashi",
"Seiju",
""
],
[
"Shiromizu",
"Tetsuya",
""
],
[
"Jhingan",
"Sanjay",
""
]
] | We study gravitational collapse of a spherically symmetric inhomogeneous dust cloud in the Lovelock theory without cosmological constant. We show that the final fate of gravitational collapse in this theory depends on the spacetime dimensions. In odd dimensions the naked singularities formed are found to be massive. In... |
gr-qc/0102083 | Christian Klein | Christian Klein | Exact relativistic treatment of stationary counter-rotating dust disks
I: Boundary value problems and solutions | 32 pages, 1 figure, to appear in Phys. Rev. D | Phys.Rev. D63 (2001) 064033 | 10.1103/PhysRevD.63.064033 | null | gr-qc | null | This is the first in a series of papers on the construction of explicit
solutions to the stationary axisymmetric Einstein equations which describe
counter-rotating disks of dust. These disks can serve as models for certain
galaxies and accretion disks in astrophysics. We review the Newtonian theory
for disks using Ri... | [
{
"created": "Mon, 19 Feb 2001 15:17:51 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Klein",
"Christian",
""
]
] | This is the first in a series of papers on the construction of explicit solutions to the stationary axisymmetric Einstein equations which describe counter-rotating disks of dust. These disks can serve as models for certain galaxies and accretion disks in astrophysics. We review the Newtonian theory for disks using Riem... |
1605.03893 | Jonathan Luk | Jonathan Luk, Sung-Jin Oh, Shiwu Yang | Solutions to the Einstein-scalar-field system in spherical symmetry with
large bounded variation norms | null | null | null | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well-known that small, regular, spherically symmetric characteristic
initial data to the Einstein-scalar-field system which are decaying towards
(future null) infinity give rise to solutions which are foward-in-time global
(in the sense of future causal geodesic completeness). We construct a class of
sphericall... | [
{
"created": "Thu, 12 May 2016 16:57:52 GMT",
"version": "v1"
}
] | 2016-05-13 | [
[
"Luk",
"Jonathan",
""
],
[
"Oh",
"Sung-Jin",
""
],
[
"Yang",
"Shiwu",
""
]
] | It is well-known that small, regular, spherically symmetric characteristic initial data to the Einstein-scalar-field system which are decaying towards (future null) infinity give rise to solutions which are foward-in-time global (in the sense of future causal geodesic completeness). We construct a class of spherically ... |
1008.2810 | Sascha Vongehr | Sascha Vongehr | Metric Expansion from Microscopic Dynamics in an Inhomogeneous Universe | 23 pages, no figures | Communications in Theoretical Physics 54 (3) pp. 477-483 (2010) | 10.1088/0253-6102/54/3/20 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Theories with ingredients like the Higgs mechanism, gravitons, and inflaton
fields rejuvenate the idea that relativistic kinematics is dynamically
emergent. Eternal inflation treats the Hubble constant H as depending on
location. Microscopic dynamics implies that H is over much smaller lengths than
pocket universes t... | [
{
"created": "Tue, 17 Aug 2010 03:52:12 GMT",
"version": "v1"
}
] | 2015-05-19 | [
[
"Vongehr",
"Sascha",
""
]
] | Theories with ingredients like the Higgs mechanism, gravitons, and inflaton fields rejuvenate the idea that relativistic kinematics is dynamically emergent. Eternal inflation treats the Hubble constant H as depending on location. Microscopic dynamics implies that H is over much smaller lengths than pocket universes to ... |
1602.00608 | Julien Larena | Jean-Philippe Bruneton and Julien Larena | Quantum theory of the Generalised Uncertainty Principle | 21 pages, no figures. Results unchanged. Unnecessary Appendix B
removed. Replaced to match final version published in General Relativity and
Gravitation. Title shortened at the request of the referee | Gen Relativ Gravit (2017) 49: 56 | 10.1007/s10714-017-2220-0 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend significantly previous works on the Hilbert space representations
of the Generalized Uncertainty Principle (GUP) in 3+1 dimensions of the form
$[X_i,P_j] = i F_{ij}$ where $ F_{ij} = f(P^2) \delta_{ij} + g(P^2) P_i P_j $
for any functions $f$. However, we restrict our study to the case of commuting
$X$'s. W... | [
{
"created": "Mon, 1 Feb 2016 17:38:48 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Mar 2017 08:18:45 GMT",
"version": "v2"
}
] | 2017-03-22 | [
[
"Bruneton",
"Jean-Philippe",
""
],
[
"Larena",
"Julien",
""
]
] | We extend significantly previous works on the Hilbert space representations of the Generalized Uncertainty Principle (GUP) in 3+1 dimensions of the form $[X_i,P_j] = i F_{ij}$ where $ F_{ij} = f(P^2) \delta_{ij} + g(P^2) P_i P_j $ for any functions $f$. However, we restrict our study to the case of commuting $X$'s. We ... |
2301.05268 | Chris Stevens | J\"org Frauendiener, Alex Goodenbour, Chris Stevens | The non-linear perturbation of a black hole by gravitational waves. III.
Newman-Penrose constants | 17 pages, 5 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we continue our study of the non-linear response of a
Schwarzschild black hole to an ingoing gravitational wave by computing the
Newman-Penrose (NP) constants. The NP constants are five complex,
supertranslation-invariant quantities defined on null infinity $\mathscr{I}^+$
and although put forward in th... | [
{
"created": "Thu, 12 Jan 2023 19:32:28 GMT",
"version": "v1"
}
] | 2023-01-16 | [
[
"Frauendiener",
"Jörg",
""
],
[
"Goodenbour",
"Alex",
""
],
[
"Stevens",
"Chris",
""
]
] | In this paper we continue our study of the non-linear response of a Schwarzschild black hole to an ingoing gravitational wave by computing the Newman-Penrose (NP) constants. The NP constants are five complex, supertranslation-invariant quantities defined on null infinity $\mathscr{I}^+$ and although put forward in the ... |
2201.01946 | Hideki Asada | Ryuya Kudo, Hideki Asada | Nondivergent deflection of light around a photon sphere of a compact
object | 10 pages, 4 figures, OSPS corrected to SOPS, potential added, figure
2 replaced, accepted for PRD | Phys. Rev. D 105, 084014 (2022) | 10.1103/PhysRevD.105.084014 | null | gr-qc astro-ph.HE hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We demonstrate that the location of a stable photon sphere (PS) in a compact
object is not always an edge such as the inner boundary of a black hole shadow,
whereas the location of an unstable PS is known to be the shadow edge notably
in the Schwarzschild black hole. If a static spherically symmetric (SSS)
spacetime ... | [
{
"created": "Thu, 6 Jan 2022 07:27:08 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Mar 2022 23:57:13 GMT",
"version": "v2"
}
] | 2022-06-08 | [
[
"Kudo",
"Ryuya",
""
],
[
"Asada",
"Hideki",
""
]
] | We demonstrate that the location of a stable photon sphere (PS) in a compact object is not always an edge such as the inner boundary of a black hole shadow, whereas the location of an unstable PS is known to be the shadow edge notably in the Schwarzschild black hole. If a static spherically symmetric (SSS) spacetime ha... |
gr-qc/9308022 | Salman Habib | Salman Habib | Multiplicative Noise: Applications in Cosmology and Field Theory | 21 pages, LaTex, LA-UR-93-2105 | null | 10.1111/j.1749-6632.1993.tb24685.x | null | gr-qc hep-th | null | Physical situations involving multiplicative noise arise generically in
cosmology and field theory. In this paper, the focus is first on exact
nonlinear Langevin equations, appropriate in a cosmologica setting, for a
system with one degree of freedom. The Langevin equations are derived using an
appropriate time-depen... | [
{
"created": "Sat, 21 Aug 1993 03:46:45 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Habib",
"Salman",
""
]
] | Physical situations involving multiplicative noise arise generically in cosmology and field theory. In this paper, the focus is first on exact nonlinear Langevin equations, appropriate in a cosmologica setting, for a system with one degree of freedom. The Langevin equations are derived using an appropriate time-depende... |
0704.0332 | Timothy Sumner | M.B. Gerrard and T.J. Sumner | The effect of a fifth large-scale space-time dimension on the
conservation of energy in a four dimensional Universe | 9 pages, 2 figures version update to correct figure placement Final
update to include corrected typos and two additional equations | null | null | null | gr-qc | null | The effect of introducing a fifth large-scale space-time dimension to the
equations of orbital dynamics was analysed in an earlier paper by the authors.
The results showed good agreement with the observed flat rotation curves of
galaxies and the Pioneer Anomaly. This analysis did not require the
modification of Newto... | [
{
"created": "Tue, 3 Apr 2007 17:58:45 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Apr 2007 22:27:57 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Apr 2007 12:45:49 GMT",
"version": "v3"
},
{
"created": "Wed, 10 Oct 2007 13:10:38 GMT",
"version": "v4"
}
] | 2007-10-10 | [
[
"Gerrard",
"M. B.",
""
],
[
"Sumner",
"T. J.",
""
]
] | The effect of introducing a fifth large-scale space-time dimension to the equations of orbital dynamics was analysed in an earlier paper by the authors. The results showed good agreement with the observed flat rotation curves of galaxies and the Pioneer Anomaly. This analysis did not require the modification of Newtoni... |
2007.05967 | Sergey Paston | A.D. Kapustin, S.A. Paston | Explicit isometric embeddings of black holes geometry with non-singular
matter distribution | LaTeX, 8 pages | Journal of Physics: Conference Series 1697 (2020) 012082 | 10.1088/1742-6596/1697/1/012082 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The work is devoted to the construction of explicit embeddings for the
metrics of the black holes, formed by nonsingular matter distribution. One of
the possible examples of such type of solutions is regular black hole. Using
the existing classification of minimal symmetric embeddings of the
Schwarzschild metric as a... | [
{
"created": "Sun, 12 Jul 2020 11:53:40 GMT",
"version": "v1"
}
] | 2021-06-08 | [
[
"Kapustin",
"A. D.",
""
],
[
"Paston",
"S. A.",
""
]
] | The work is devoted to the construction of explicit embeddings for the metrics of the black holes, formed by nonsingular matter distribution. One of the possible examples of such type of solutions is regular black hole. Using the existing classification of minimal symmetric embeddings of the Schwarzschild metric as a b... |
gr-qc/0510077 | Sergei Kopeikin | Sergei M. Kopeikin (University of Missouri-Columbia, USA) and Edward
B. Fomalont (National Radio Astronomy Observatory, USA) | Gravimagnetism, Causality, and Aberration of Gravity in the
Gravitational Light-Ray Deflection Experiments | 44 pages including references, 7 figures, 1 table; accepted for
publication in General Relativity and Gravitation | Gen.Rel.Grav.39:1583-1624,2007 | 10.1007/s10714-007-0483-6 | null | gr-qc astro-ph | null | Experimental verification of the existence of gravimagnetic fields generated
by currents of matter is important for a complete understanding and formulation
of gravitational physics. Although the rotational `intrinsic' gravimagnetic
field has been extensively studied and is now being measured by the Gravity
Probe B, ... | [
{
"created": "Sun, 16 Oct 2005 20:54:46 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Oct 2006 15:47:33 GMT",
"version": "v2"
},
{
"created": "Fri, 19 Jan 2007 20:33:06 GMT",
"version": "v3"
},
{
"created": "Tue, 29 May 2007 22:17:32 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Kopeikin",
"Sergei M.",
"",
"University of Missouri-Columbia, USA"
],
[
"Fomalont",
"Edward B.",
"",
"National Radio Astronomy Observatory, USA"
]
] | Experimental verification of the existence of gravimagnetic fields generated by currents of matter is important for a complete understanding and formulation of gravitational physics. Although the rotational `intrinsic' gravimagnetic field has been extensively studied and is now being measured by the Gravity Probe B, th... |
gr-qc/0408063 | Volodymyr Pelykh | V. Pelykh | Sen-Witten orthonormal three-frame and gravitational energy
quasilocalization | 9 pages | Class.Quant.Grav. 20 (2003) 1115-1123 | 10.1088/0264-9381/20/6/306 | null | gr-qc | null | Expression for the Witten-Nester 4-spinor 3-form of the Hamiltonian density
of gravitational field in the asymptotically flat space-time in terms of the
Sommers-Sen spinors, direct with a certain orthonormal three-frame connect, is
obtained. A direct connection between the one and the ADM Hamiltonian density
in the S... | [
{
"created": "Wed, 18 Aug 2004 13:49:28 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Pelykh",
"V.",
""
]
] | Expression for the Witten-Nester 4-spinor 3-form of the Hamiltonian density of gravitational field in the asymptotically flat space-time in terms of the Sommers-Sen spinors, direct with a certain orthonormal three-frame connect, is obtained. A direct connection between the one and the ADM Hamiltonian density in the Sen... |
2210.11351 | Vasilis Oikonomou | S.D. Odintsov, V.K. Oikonomou | Generalized $R^p$-attractor Cosmology in the Jordan and Einstein Frames:
New Type of Attractors and Revisiting Standard Jordan Frame $R^p$ Inflation | IJMPD Accepted | null | 10.1142/S0218271822501358 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we shall study a new class of attractor models which we shall
call generalized $R^p$-attractor models. This class of models is based on a
generalization of the Einstein frame potential of $R^p$ $f(R)$ gravity models
in the Jordan frame. We present the attractor properties of the corresponding
non-minimal... | [
{
"created": "Thu, 20 Oct 2022 15:38:33 GMT",
"version": "v1"
}
] | 2023-02-08 | [
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this work we shall study a new class of attractor models which we shall call generalized $R^p$-attractor models. This class of models is based on a generalization of the Einstein frame potential of $R^p$ $f(R)$ gravity models in the Jordan frame. We present the attractor properties of the corresponding non-minimally... |
1708.00603 | Sunny Vagnozzi | Sunny Vagnozzi | Recovering a MOND-like acceleration law in mimetic gravity | 11 pages, accepted for publication in Class. Quant. Grav | Class. Quant. Grav. 34 (2017) 185006 | 10.1088/1361-6382/aa838b | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reconsider the recently proposed mimetic gravity, focusing in particular
on whether the theory is able to reproduce the inferred flat rotation curves of
galaxies. We extend the theory by adding a non-minimal coupling between matter
and mimetic field. Such coupling leads to the appearance of an extra force
which re... | [
{
"created": "Wed, 2 Aug 2017 05:02:07 GMT",
"version": "v1"
}
] | 2018-12-13 | [
[
"Vagnozzi",
"Sunny",
""
]
] | We reconsider the recently proposed mimetic gravity, focusing in particular on whether the theory is able to reproduce the inferred flat rotation curves of galaxies. We extend the theory by adding a non-minimal coupling between matter and mimetic field. Such coupling leads to the appearance of an extra force which rend... |
1910.13259 | Changqing Liu Lcqliu | Changqing Liu Chikun Ding, Jiliang Jing | Thin accretion disk around a rotating Kerr-like black hole in
Einstein-bumblebee gravity model | 14 figures. arXiv admin note: substantial text overlap with
arXiv:1110.3462, arXiv:1106.5183; text overlap with arXiv:0909.1267 by other
authors | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the accretion process in the thin disk around a rotating Kerr-like
black hole in Einstein-bumblebee gravity model where Lorentz symmetry is
spontaneously broken once a vector field acquires a vacuum expectation value.
In the present paper we obtain the energy flux, the emission spectrum and
accretion efficie... | [
{
"created": "Sat, 26 Oct 2019 11:52:18 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Nov 2019 02:47:34 GMT",
"version": "v2"
}
] | 2019-11-07 | [
[
"Ding",
"Changqing Liu Chikun",
""
],
[
"Jing",
"Jiliang",
""
]
] | We study the accretion process in the thin disk around a rotating Kerr-like black hole in Einstein-bumblebee gravity model where Lorentz symmetry is spontaneously broken once a vector field acquires a vacuum expectation value. In the present paper we obtain the energy flux, the emission spectrum and accretion efficienc... |
1505.01518 | Juan D Reyes | Alejandro Corichi and Juan D. Reyes | The gravitational Hamiltonian, first order action, Poincar\'e charges
and surface terms | 56 pages, 4 figures. Minor typos corrected and references added. File
matches published version | Class. Quantum Grav. 32 (2015) 195024 | 10.1088/0264-9381/32/19/195024 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the issue of attaining a consistent Hamiltonian formulation,
after a 3+1 splitting, of a well defined action principle for asymptotically
flat gravity. More precisely, our starting point is the gravitational first
order Holst action with surface terms and fall-off conditions that make the
variational prin... | [
{
"created": "Wed, 6 May 2015 21:04:49 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Nov 2015 22:44:01 GMT",
"version": "v2"
}
] | 2015-11-09 | [
[
"Corichi",
"Alejandro",
""
],
[
"Reyes",
"Juan D.",
""
]
] | We consider the issue of attaining a consistent Hamiltonian formulation, after a 3+1 splitting, of a well defined action principle for asymptotically flat gravity. More precisely, our starting point is the gravitational first order Holst action with surface terms and fall-off conditions that make the variational princi... |
1602.04738 | Alexander Zhidenko | Roman Konoplya and Alexander Zhidenko | Detection of gravitational waves from black holes: Is there a window for
alternative theories? | 5 pages, 1 figure | Phys.Lett.B756:350-353,2016 | 10.1016/j.physletb.2016.03.044 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently LIGO and VIRGO collaborations reported about observation of
gravitational-wave signal corresponding to the inspiral and merger of two black
holes, resulting into formation of the final black hole. It was shown that the
observations are consistent with the Einstein theory of gravity with high
accuracy limited... | [
{
"created": "Mon, 15 Feb 2016 17:08:33 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Feb 2016 10:32:19 GMT",
"version": "v2"
},
{
"created": "Sat, 19 Mar 2016 18:07:37 GMT",
"version": "v3"
}
] | 2016-03-28 | [
[
"Konoplya",
"Roman",
""
],
[
"Zhidenko",
"Alexander",
""
]
] | Recently LIGO and VIRGO collaborations reported about observation of gravitational-wave signal corresponding to the inspiral and merger of two black holes, resulting into formation of the final black hole. It was shown that the observations are consistent with the Einstein theory of gravity with high accuracy limited m... |
gr-qc/9912115 | Chunho Choi | Dongsu Bak, Sang Pyo Kim, Sung Ku Kim, Kwang-Sup Soh, and Jae Hyung
Yee | Gravitational Collapse and Calogero Model | null | null | 10.1103/PhysRevD.62.047504 | SNUTP 99-056 | gr-qc | null | We study the analytic structure of the S-matrix which is obtained from the
reduced Wheeler-DeWitt wave function describing spherically symmetric
gravitational collapse of massless scalar fields. The simple poles in the
S-matrix occur in the Euclidean spacetime, and the Euclidean Wheeler-DeWitt
equation is a variant o... | [
{
"created": "Wed, 29 Dec 1999 09:03:03 GMT",
"version": "v1"
}
] | 2013-05-29 | [
[
"Bak",
"Dongsu",
""
],
[
"Kim",
"Sang Pyo",
""
],
[
"Kim",
"Sung Ku",
""
],
[
"Soh",
"Kwang-Sup",
""
],
[
"Yee",
"Jae Hyung",
""
]
] | We study the analytic structure of the S-matrix which is obtained from the reduced Wheeler-DeWitt wave function describing spherically symmetric gravitational collapse of massless scalar fields. The simple poles in the S-matrix occur in the Euclidean spacetime, and the Euclidean Wheeler-DeWitt equation is a variant of ... |
2102.08944 | Fay\c{c}al Hammad | F. Hammad, A. Landry, D. Dijamco | Influence of the dispersion relation on the Unruh effect according to
the relativistic Doppler shift method | 13 pages, no figures. To appear in PRD | Phys. Rev. D 103, 085010 (2021) | 10.1103/PhysRevD.103.085010 | null | gr-qc hep-th physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the influence of the dispersion relation on the Unruh effect by
Lorentz boosting the phase of Minkowski vacuum fluctuations endowed with an
arbitrary dispersion relation. We find that, unlike what happens with a linear
dispersion relation exhibited by massless fields, thermality is lost for
general dispers... | [
{
"created": "Wed, 17 Feb 2021 18:56:57 GMT",
"version": "v1"
}
] | 2021-04-28 | [
[
"Hammad",
"F.",
""
],
[
"Landry",
"A.",
""
],
[
"Dijamco",
"D.",
""
]
] | We examine the influence of the dispersion relation on the Unruh effect by Lorentz boosting the phase of Minkowski vacuum fluctuations endowed with an arbitrary dispersion relation. We find that, unlike what happens with a linear dispersion relation exhibited by massless fields, thermality is lost for general dispersio... |
1010.1269 | Andrew J. S. Hamilton | Andrew J. S. Hamilton and Gavin Polhemus (JILA) | The interior structure of rotating black holes 1. Concise derivation | Version 1: 8 pages, 3 figures. Version 2: Extensively revised to
emphasize the derivation of the solution rather than the solution itself. 11
pages, 4 figures. Version 3: Minor changes to match published version.
Mathematica notebook available at
http://jila.colorado.edu/~ajsh/rotatinginflationary/rotatinginfla... | Phys. Rev. D 84, 124055 (2011) | 10.1103/PhysRevD.84.124055 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper presents a concise derivation of a new set of solutions for the
interior structure of accreting, rotating black holes. The solutions are
conformally stationary, axisymmetric, and conformally separable.
Hyper-relativistic counter-streaming between freely-falling collisionless
ingoing and outgoing streams le... | [
{
"created": "Sun, 3 Oct 2010 17:51:59 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Jan 2011 00:27:32 GMT",
"version": "v2"
},
{
"created": "Fri, 13 Jan 2012 00:54:10 GMT",
"version": "v3"
}
] | 2015-03-17 | [
[
"Hamilton",
"Andrew J. S.",
"",
"JILA"
],
[
"Polhemus",
"Gavin",
"",
"JILA"
]
] | This paper presents a concise derivation of a new set of solutions for the interior structure of accreting, rotating black holes. The solutions are conformally stationary, axisymmetric, and conformally separable. Hyper-relativistic counter-streaming between freely-falling collisionless ingoing and outgoing streams lead... |
1704.04386 | Luis Herrera | L. Herrera | The theory of gravitation: A tale of many questions and few answers | 22 pages latex. Partially based on a talk delivered at "70&70
Gravitation Fest", Cartagena, Colombia, September 2016. arXiv admin note:
text overlap with arXiv:1703.03958 | IOP Conf. Series: Journal of Physics: Conf. Series 831 (2017)
012001 | 10.1088/1742-6596/831/1/012001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss on different issues pertaining the theory of gravity, which pose
some unresolved fundamental questions. First we tackle the problem of observers
in general relativity, with particular emphasis in tilted observers. We explain
why these observers may detect dissipative processes in systems which appear
isent... | [
{
"created": "Fri, 14 Apr 2017 10:22:06 GMT",
"version": "v1"
}
] | 2017-04-26 | [
[
"Herrera",
"L.",
""
]
] | We discuss on different issues pertaining the theory of gravity, which pose some unresolved fundamental questions. First we tackle the problem of observers in general relativity, with particular emphasis in tilted observers. We explain why these observers may detect dissipative processes in systems which appear isentro... |
gr-qc/0703018 | P. Marecki | P. Marecki | On the wave equation in spacetimes of Goedel type | Significantly updated version, also including discussion of the
Som-Raychaudhuri (flat) case; Chapter in "G\"odel-type spacetimes: history
and new developments", Annals of the Kurt G\"odel Society, ed. M. Scherfner
and M. Plaue (2010) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the d'Alembert equation in the Goedel-type spacetimes with
spherical and Lobachevsky sections (with sufficiently rapid rotation). By
separating the $t$ and $x_3$ dependence we reduce the problem to a
group-theoretical one. In the spherical case solutions have discrete
frequencies, and involve spin-weighted... | [
{
"created": "Fri, 2 Mar 2007 17:06:44 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jan 2012 10:51:07 GMT",
"version": "v2"
}
] | 2012-01-25 | [
[
"Marecki",
"P.",
""
]
] | We analyze the d'Alembert equation in the Goedel-type spacetimes with spherical and Lobachevsky sections (with sufficiently rapid rotation). By separating the $t$ and $x_3$ dependence we reduce the problem to a group-theoretical one. In the spherical case solutions have discrete frequencies, and involve spin-weighted s... |
gr-qc/0509002 | Mauricio Bellini | Mariano Anabitarte, Mauricio Bellini (Mar del Plata University &
CONICET) | Space Time Matter inflation | accepted in JMP | J.Math.Phys. 47 (2006) 042502 | 10.1063/1.2186926 | null | gr-qc astro-ph hep-ph hep-th | null | We study a model of power-law inflationary inflation using the
Space-Time-Matter (STM) theory of gravity for a five dimensional (5D) canonical
metric that describes an apparent vacuum. In this approach the expansion is
governed by a single scalar (neutral) quantum field. In particular, we study
the case where the pow... | [
{
"created": "Wed, 31 Aug 2005 22:17:01 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Feb 2006 15:48:58 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Anabitarte",
"Mariano",
"",
"Mar del Plata University &\n CONICET"
],
[
"Bellini",
"Mauricio",
"",
"Mar del Plata University &\n CONICET"
]
] | We study a model of power-law inflationary inflation using the Space-Time-Matter (STM) theory of gravity for a five dimensional (5D) canonical metric that describes an apparent vacuum. In this approach the expansion is governed by a single scalar (neutral) quantum field. In particular, we study the case where the power... |
2302.06666 | Flavio Rossetti | Flavio Rossetti, Alex Va\~n\'o-Vi\~nuales | Decay of solutions of the wave equation in cosmological spacetimes -- a
numerical analysis | null | Class. Quantum Grav. 40 (2023) 175004 | 10.1088/1361-6382/ace7a6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We numerically evolve spherically symmetric solutions to the linear wave
equation on some expanding Friedmann-Lema\^itre-Robertson-Walker (FLRW)
spacetimes and study the respective asymptotics for large times. We find a
quantitative relation between the expansion rate of the underlying background
universe and the dec... | [
{
"created": "Mon, 13 Feb 2023 19:58:28 GMT",
"version": "v1"
}
] | 2023-09-26 | [
[
"Rossetti",
"Flavio",
""
],
[
"Vañó-Viñuales",
"Alex",
""
]
] | We numerically evolve spherically symmetric solutions to the linear wave equation on some expanding Friedmann-Lema\^itre-Robertson-Walker (FLRW) spacetimes and study the respective asymptotics for large times. We find a quantitative relation between the expansion rate of the underlying background universe and the decay... |
2110.05510 | Yusuke Manita | Katsuki Aoki, Yusuke Manita and Shinji Mukohyama | Shift-symmetric $SO(N)$ multi-Galileon | 18 pages. v2: matches published version | JCAP12(2021)045 | 10.1088/1475-7516/2021/12/045 | KUNS-2894, YITP21-115, IPMU21-0063 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | A Poincar\`{e} invariant, local scalar field theory in which the Lagrangian
and the equation of motion contain only up to second-order derivatives of the
fields is called generalized Galileon. The covariant version of it in four
dimensions is called Horndeski theory, and has been vigorously studied in
applications to... | [
{
"created": "Mon, 11 Oct 2021 18:00:07 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Dec 2021 15:03:39 GMT",
"version": "v2"
}
] | 2021-12-23 | [
[
"Aoki",
"Katsuki",
""
],
[
"Manita",
"Yusuke",
""
],
[
"Mukohyama",
"Shinji",
""
]
] | A Poincar\`{e} invariant, local scalar field theory in which the Lagrangian and the equation of motion contain only up to second-order derivatives of the fields is called generalized Galileon. The covariant version of it in four dimensions is called Horndeski theory, and has been vigorously studied in applications to i... |
gr-qc/9412003 | Melnikov Vitaly Nikolaevich | A.A.Kirillov | Quantum creation of an inhomogeneous unflationary universe | 6 pages, latex, no figures | Grav.Cosmol. 2 (1996) 35-37 | null | RGA-CSVR-015/94 | gr-qc | null | The process of quantum creation of a qusihomogeneous inflationary universe
near a cosmological singularity is considered. It is shown that during the
evolution quantum fluctuations of spatial topologies increase and the universe
acquires homogeneous and isotropic character on arbitrary large distances.
| [
{
"created": "Thu, 1 Dec 1994 15:44:34 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kirillov",
"A. A.",
""
]
] | The process of quantum creation of a qusihomogeneous inflationary universe near a cosmological singularity is considered. It is shown that during the evolution quantum fluctuations of spatial topologies increase and the universe acquires homogeneous and isotropic character on arbitrary large distances. |
gr-qc/0605105 | Smaragda Kessari | Smaragda Kessari | Affine Histories in Quantum Gravity: Introduction and the Representation
for a Cosmological Model | 31 pages, LaTeX, no figures | Class.Quant.Grav.24:1303-1330,2007 | 10.1088/0264-9381/24/5/014 | null | gr-qc | null | It is shown how consistent histories quantum cosmology can be realised
through Isham's Histories Projection Operator consistent histories scheme. This
is done by using an affine algebra instead of a canonical one and also by using
cocycle representations. A regularisation scheme allows us to find a history
Hamiltonia... | [
{
"created": "Thu, 18 May 2006 17:19:16 GMT",
"version": "v1"
},
{
"created": "Sun, 4 Jun 2006 19:34:27 GMT",
"version": "v2"
},
{
"created": "Fri, 23 Jun 2006 12:33:11 GMT",
"version": "v3"
},
{
"created": "Mon, 26 Jun 2006 12:15:07 GMT",
"version": "v4"
},
{
"cr... | 2008-11-26 | [
[
"Kessari",
"Smaragda",
""
]
] | It is shown how consistent histories quantum cosmology can be realised through Isham's Histories Projection Operator consistent histories scheme. This is done by using an affine algebra instead of a canonical one and also by using cocycle representations. A regularisation scheme allows us to find a history Hamiltonian ... |
1501.06025 | Benrong Mu | Benrong Mu, Peng Wang and Haitang Yang | Minimal Length Effects on Tunnelling from Spherically Symmetric Black
Holes | 18 pages | Adv.High Energy Phys. 2015 (2015) 898916 | 10.1155/2015/898916 | CTP-SCU/2015003 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate effects of the minimal length on quantum
tunnelling from spherically symmetric black holes using the Hamilton-Jacobi
method incorporating the minimal length. We first derive the deformed
Hamilton-Jacobi equations for scalars and fermions, both of which have the same
expressions. The mini... | [
{
"created": "Sat, 24 Jan 2015 10:49:40 GMT",
"version": "v1"
}
] | 2015-01-27 | [
[
"Mu",
"Benrong",
""
],
[
"Wang",
"Peng",
""
],
[
"Yang",
"Haitang",
""
]
] | In this paper, we investigate effects of the minimal length on quantum tunnelling from spherically symmetric black holes using the Hamilton-Jacobi method incorporating the minimal length. We first derive the deformed Hamilton-Jacobi equations for scalars and fermions, both of which have the same expressions. The minima... |
0908.0329 | Sam Dolan Dr | Sam R. Dolan and Adrian C. Ottewill | On an Expansion Method for Black Hole Quasinormal Modes and Regge Poles | 23 pages, 6 figures. Corrected typos in version 1, Eq. (21), (22),
(35) & (36). Matches published version | Class.Quant.Grav.26:225003,2009 | 10.1088/0264-9381/26/22/225003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new method for determining the frequencies and wavefunctions of
black hole quasinormal modes (QNMs) and Regge poles. The key idea is a novel
ansatz for the wavefunction, which relates the high-$l$ wavefunctions to null
geodesics which start at infinity and end in perpetual orbit on the photon
sphere. Our... | [
{
"created": "Tue, 4 Aug 2009 15:18:53 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Oct 2009 08:30:17 GMT",
"version": "v2"
}
] | 2010-04-30 | [
[
"Dolan",
"Sam R.",
""
],
[
"Ottewill",
"Adrian C.",
""
]
] | We present a new method for determining the frequencies and wavefunctions of black hole quasinormal modes (QNMs) and Regge poles. The key idea is a novel ansatz for the wavefunction, which relates the high-$l$ wavefunctions to null geodesics which start at infinity and end in perpetual orbit on the photon sphere. Our a... |
1412.5851 | Marc Geiller | Olivier Asin, Jibril Ben Achour, Marc Geiller, Karim Noui, Alejandro
Perez | Black holes as gases of punctures with a chemical potential:
Bose-Einstein condensation and logarithmic corrections to the entropy | 22 pages | Phys. Rev. D 91, 084005 (2015) | 10.1103/PhysRevD.91.084005 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the thermodynamical properties of black holes when described as
gases of indistinguishable punctures with a chemical potential. In this
picture, which arises from loop quantum gravity, the black hole microstates are
defined by finite families of half-integers spins coloring the punctures, and
the near-horizo... | [
{
"created": "Thu, 18 Dec 2014 13:29:35 GMT",
"version": "v1"
}
] | 2015-04-08 | [
[
"Asin",
"Olivier",
""
],
[
"Achour",
"Jibril Ben",
""
],
[
"Geiller",
"Marc",
""
],
[
"Noui",
"Karim",
""
],
[
"Perez",
"Alejandro",
""
]
] | We study the thermodynamical properties of black holes when described as gases of indistinguishable punctures with a chemical potential. In this picture, which arises from loop quantum gravity, the black hole microstates are defined by finite families of half-integers spins coloring the punctures, and the near-horizon ... |
gr-qc/0312053 | M. Panahi | Mehrdad Panahi | Hidden connection between general relativity and Finsler geometry | LaTEX2e, 7 pages, no figures or tables | Nuovo Cim.B118:345-351,2003 | 10.1393/ncb/i2002-10007-0 | null | gr-qc | null | Modern formulation of Finsler geometry of a manifold M utilizes the
equivalence between this geometry and the Riemannian geometry of VTM, the
vertical bundle over the tangent bundle of M, treating TM as the base space. We
argue that this approach is unsatisfactory when there is an indefinite metric
on M because the c... | [
{
"created": "Tue, 9 Dec 2003 15:38:11 GMT",
"version": "v1"
}
] | 2011-08-17 | [
[
"Panahi",
"Mehrdad",
""
]
] | Modern formulation of Finsler geometry of a manifold M utilizes the equivalence between this geometry and the Riemannian geometry of VTM, the vertical bundle over the tangent bundle of M, treating TM as the base space. We argue that this approach is unsatisfactory when there is an indefinite metric on M because the cor... |
gr-qc/0510089 | Romualdo Tresguerres | A. Tiemblo and R. Tresguerres | Gauge theories of gravity: the nonlinear framework | Review article published in Recent Research Developments in Physics 5
(2004) 1255, Transworld Research Network | Recent Res.Devel.Phys. 5 (2004) 1255 | null | null | gr-qc | null | Nonlinear realizations of spacetime groups are presented as a versatile
mathematical tool providing a common foundation for quite different
formulations of gauge theories of gravity. We apply nonlinear realizations in
particular to both the Poincar\'e and the affine group in order to develop
Poincar\'e gauge theory (... | [
{
"created": "Wed, 19 Oct 2005 18:50:12 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Tiemblo",
"A.",
""
],
[
"Tresguerres",
"R.",
""
]
] | Nonlinear realizations of spacetime groups are presented as a versatile mathematical tool providing a common foundation for quite different formulations of gauge theories of gravity. We apply nonlinear realizations in particular to both the Poincar\'e and the affine group in order to develop Poincar\'e gauge theory (PG... |
gr-qc/0202016 | Luc Blanchet | Luc Blanchet | Gravitational Radiation from Post-Newtonian Sources and Inspiralling
Compact Binaries | 109 pages, 1 figure; this version is an update of the Living Review
article originally published in 2002; available on-line at
http://www.livingreviews.org/ | LivingRev.Rel.5:3,2002 | 10.12942/lrr-2002-3 | null | gr-qc | null | The article reviews the current status of a theoretical approach to the
problem of the emission of gravitational waves by isolated systems in the
context of general relativity. Part A of the article deals with general
post-Newtonian sources. The exterior field of the source is investigated by
means of a combination o... | [
{
"created": "Wed, 6 Feb 2002 15:25:06 GMT",
"version": "v1"
},
{
"created": "Thu, 16 May 2002 17:16:06 GMT",
"version": "v2"
},
{
"created": "Fri, 3 Jun 2005 16:58:19 GMT",
"version": "v3"
},
{
"created": "Tue, 6 Jun 2006 17:48:54 GMT",
"version": "v4"
}
] | 2016-11-23 | [
[
"Blanchet",
"Luc",
""
]
] | The article reviews the current status of a theoretical approach to the problem of the emission of gravitational waves by isolated systems in the context of general relativity. Part A of the article deals with general post-Newtonian sources. The exterior field of the source is investigated by means of a combination of ... |
0811.1548 | Laszlo Arpad Gergely | L\'aszl\'o \'Arp\'ad Gergely, Narit Pidokrajt, Sergei Winitzki | Geometro-thermodynamics of tidal charged black holes | v3: 23 pages, 8 figures, 1 table, published version | Eur.Phys.J.C71:1569,2011 | 10.1140/epjc/s10052-011-1569-6 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Tidal charged spherically symmetric vacuum brane black holes are
characterized by their mass m and tidal charge q, an imprint of the
5-dimensional Weyl curvature. For q>0 they are formally identical to the
Reissner-Nordstr\"om black hole of general relativity. We study the
thermodynamics and thermodynamic geometries ... | [
{
"created": "Mon, 10 Nov 2008 19:32:14 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Oct 2009 21:41:03 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Mar 2011 08:24:01 GMT",
"version": "v3"
}
] | 2011-05-10 | [
[
"Gergely",
"László Árpád",
""
],
[
"Pidokrajt",
"Narit",
""
],
[
"Winitzki",
"Sergei",
""
]
] | Tidal charged spherically symmetric vacuum brane black holes are characterized by their mass m and tidal charge q, an imprint of the 5-dimensional Weyl curvature. For q>0 they are formally identical to the Reissner-Nordstr\"om black hole of general relativity. We study the thermodynamics and thermodynamic geometries of... |
1509.01378 | Yosuke Misonoh | Yosuke Misonoh and Kei-ichi Maeda | Black Holes and Thunderbolt Singularities with Lifshitz Scaling Terms | 24 pages, 17 figures, 6 tables; v2 : typos corrected, minor changes,
version accepted for publication in PRD | Phys. Rev. D 92, 084049 (2015) | 10.1103/PhysRevD.92.084049 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a static, spherically symmetric and asymptotic flat spacetime,
assuming the hypersurface orthogonal Einstein-aether theory with an ultraviolet
modification motivated by the Horava-Lifshitz theory, which is composed of the
$z=2$ Lifshitz scaling terms such as scalar combinations of a three-Ricci
curvature and... | [
{
"created": "Fri, 4 Sep 2015 09:23:52 GMT",
"version": "v1"
},
{
"created": "Sun, 27 Sep 2015 03:45:58 GMT",
"version": "v2"
}
] | 2015-10-28 | [
[
"Misonoh",
"Yosuke",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | We study a static, spherically symmetric and asymptotic flat spacetime, assuming the hypersurface orthogonal Einstein-aether theory with an ultraviolet modification motivated by the Horava-Lifshitz theory, which is composed of the $z=2$ Lifshitz scaling terms such as scalar combinations of a three-Ricci curvature and t... |
0804.3863 | Olivier Minazzoli | Olivier Minazzoli and Bertrand Chauvineau | A 2 PN/RM metric of General Relativity | 4 pages, conference (2008) at the graduate school of fundamental and
applied Sciences at the University of Nice Sophia-Antipolis, France. The
acronym "PN/RM" is defined in the text | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a derivation of 2PN/RM metric field equations from the Einstein
field equation in General Relativity. We use the exponential parametrization
and the $c^{-3}$ isotropic spatial coordinates such as in IAU2000
recommendations.
| [
{
"created": "Thu, 24 Apr 2008 13:12:22 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Feb 2010 14:16:23 GMT",
"version": "v2"
}
] | 2010-02-19 | [
[
"Minazzoli",
"Olivier",
""
],
[
"Chauvineau",
"Bertrand",
""
]
] | We present a derivation of 2PN/RM metric field equations from the Einstein field equation in General Relativity. We use the exponential parametrization and the $c^{-3}$ isotropic spatial coordinates such as in IAU2000 recommendations. |
gr-qc/9401014 | null | Edward Malec and Niall \'O Murchadha | Trapped surfaces and the Penrose inequality in spherically symmetric
geometries | plain tex | Phys.Rev. D49 (1994) 6931-6934 | 10.1103/PhysRevD.49.6931 | null | gr-qc | null | We demonstrate that the Penrose inequality is valid for spherically symmetric
geometries even when the horizon is immersed in matter. The matter field need
not be at rest. The only restriction is that the source satisfies the weak
energy condition outside the horizon. No restrictions are placed on the matter
inside t... | [
{
"created": "Mon, 17 Jan 1994 10:39:25 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Malec",
"Edward",
""
],
[
"Murchadha",
"Niall Ó",
""
]
] | We demonstrate that the Penrose inequality is valid for spherically symmetric geometries even when the horizon is immersed in matter. The matter field need not be at rest. The only restriction is that the source satisfies the weak energy condition outside the horizon. No restrictions are placed on the matter inside the... |
2008.02062 | Bijan Saha Dr. | Bijan Saha | Spinors in cylindrically symmetric space-time | 10 pages, 4 figures | Universe V. 6, 152 (2020) | 10.3390/universe6090152 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We studied the behavior of nonlinear spinor field within the scope of a
static cylindrically symmetric space-time. It is found that the energy-momentum
tensor (EMT) of the spinor field in this case possesses nontrivial non-diagonal
components. The presence of non-diagonal components of the EMT imposes
three-way restr... | [
{
"created": "Wed, 5 Aug 2020 12:07:28 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Sep 2020 12:28:01 GMT",
"version": "v2"
}
] | 2020-09-21 | [
[
"Saha",
"Bijan",
""
]
] | We studied the behavior of nonlinear spinor field within the scope of a static cylindrically symmetric space-time. It is found that the energy-momentum tensor (EMT) of the spinor field in this case possesses nontrivial non-diagonal components. The presence of non-diagonal components of the EMT imposes three-way restric... |
gr-qc/0605039 | Brihaye Yves | Y. Brihaye, T. Delsate | Inflating Brane inside hyper-spherically symmetric defects | 23 pages, 9 figures, results extended, references added | Class.Quant.Grav.24:1279-1292,2007 | 10.1088/0264-9381/24/5/012 | null | gr-qc hep-th | null | Static and inflating brane world models are considered in $4+n$-dimensions
with a non zero bulk cosmological constant and with a hyper-spherically
symmetric topological defect residing in the $n$ extra dimensions. Several
vacuum solutions can be constructed explicitely when the bulk and inflating
constants are non ze... | [
{
"created": "Sun, 7 May 2006 14:21:19 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Jun 2006 14:44:11 GMT",
"version": "v2"
},
{
"created": "Wed, 11 Oct 2006 13:38:49 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Brihaye",
"Y.",
""
],
[
"Delsate",
"T.",
""
]
] | Static and inflating brane world models are considered in $4+n$-dimensions with a non zero bulk cosmological constant and with a hyper-spherically symmetric topological defect residing in the $n$ extra dimensions. Several vacuum solutions can be constructed explicitely when the bulk and inflating constants are non zero... |
1106.3179 | J. Fernando Barbero G. | J. Fernando Barbero G., Eduardo J. S. Villase\~nor | The thermodynamic limit and black hole entropy in the area ensemble | 23 pages, 3 figures | Class.Quant.Grav.28:215014,2011 | 10.1088/0264-9381/28/21/215014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the thermodynamic limit in the canonical area ensemble used in
loop quantum gravity to model quantum black holes. The computation of the
thermodynamic limit is the rigorous way to obtain a smooth entropy from the
counting entropy given by a direct determination of the number of microstates
compatible with ... | [
{
"created": "Thu, 16 Jun 2011 09:20:30 GMT",
"version": "v1"
}
] | 2011-09-27 | [
[
"G.",
"J. Fernando Barbero",
""
],
[
"Villaseñor",
"Eduardo J. S.",
""
]
] | We discuss the thermodynamic limit in the canonical area ensemble used in loop quantum gravity to model quantum black holes. The computation of the thermodynamic limit is the rigorous way to obtain a smooth entropy from the counting entropy given by a direct determination of the number of microstates compatible with ma... |
gr-qc/9901060 | Valeria Ferrari | V. Ferrari, L. Gualtieri, A. Borrelli | Stellar Pulsations excited by a scattered mass | 23 pages, 6 figures, RevTeX | Phys.Rev. D59 (1999) 124020 | 10.1103/PhysRevD.59.124020 | null | gr-qc | null | We compute the energy spectra of the gravitational signals emitted when a
mass m is scattered by the gravitational field of a star of mass M >> m. We
show that, unlike black holes in similar processes, the quasi-normal modes of
the star are excited, and that the amount of energy emitted in these modes
depends on how ... | [
{
"created": "Fri, 22 Jan 1999 15:29:47 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Ferrari",
"V.",
""
],
[
"Gualtieri",
"L.",
""
],
[
"Borrelli",
"A.",
""
]
] | We compute the energy spectra of the gravitational signals emitted when a mass m is scattered by the gravitational field of a star of mass M >> m. We show that, unlike black holes in similar processes, the quasi-normal modes of the star are excited, and that the amount of energy emitted in these modes depends on how cl... |
1306.3241 | Marc Geiller | Jibril Ben Achour, Marc Geiller, Karim Noui, Chao Yu | Testing the role of the Barbero-Immirzi parameter and the choice of
connection in Loop Quantum Gravity | 36 pages | Phys. Rev. D 91, 104016 (2015) | 10.1103/PhysRevD.91.104016 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the role of the Barbero-Immirzi parameter $\gamma$ and the choice of
connection in the construction of (a symmetry-reduced version of) loop quantum
gravity. We start with the four-dimensional Lorentzian Holst action that we
reduce to three dimensions in a way that preserves the presence of $\gamma$. In
the t... | [
{
"created": "Thu, 13 Jun 2013 20:06:53 GMT",
"version": "v1"
}
] | 2015-05-19 | [
[
"Achour",
"Jibril Ben",
""
],
[
"Geiller",
"Marc",
""
],
[
"Noui",
"Karim",
""
],
[
"Yu",
"Chao",
""
]
] | We study the role of the Barbero-Immirzi parameter $\gamma$ and the choice of connection in the construction of (a symmetry-reduced version of) loop quantum gravity. We start with the four-dimensional Lorentzian Holst action that we reduce to three dimensions in a way that preserves the presence of $\gamma$. In the tim... |
1110.0094 | S Habib Mazharimousavi | S. Habib Mazharimousavi, M. Halilsoy and T. Tahamtan | Colliding plane wave solution in F(R)=R^{N} gravity | 9 pages, 2 figures | Eur. Phys. J. Plus 131, 350 (2016) | 10.1140/epjp/i2016-16350-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We identify a region of F(R)=R^{N} gravity without external sources which is
isometric to the spacetime of colliding plane waves (CPW). From the derived
curvature sources, N (N>1) measures the strength (i.e. the charge) of the
source. The analogy renders construction and collision of plane waves in
F(R)=R^{N} gravity... | [
{
"created": "Sat, 1 Oct 2011 12:00:32 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Jan 2012 17:04:37 GMT",
"version": "v2"
}
] | 2016-09-29 | [
[
"Mazharimousavi",
"S. Habib",
""
],
[
"Halilsoy",
"M.",
""
],
[
"Tahamtan",
"T.",
""
]
] | We identify a region of F(R)=R^{N} gravity without external sources which is isometric to the spacetime of colliding plane waves (CPW). From the derived curvature sources, N (N>1) measures the strength (i.e. the charge) of the source. The analogy renders construction and collision of plane waves in F(R)=R^{N} gravity p... |
gr-qc/9907013 | Sungwon | S.-W. Kim and H. Lee | Wormhole as the end state of two-dimensional black hole evaporation | 13 pages, 1 figure, latex. to appear in Phys. Lett. B (1999) | Phys.Lett. B458 (1999) 245-251 | 10.1016/S0370-2693(99)00581-X | null | gr-qc hep-th | null | We present a specific two-dimensional dilaton gravity model in which a black
hole evaporates leaving a wormhole at the end state. As the black hole formed
by infalling matter in a initially static spacetime evaporates by emitting
Hawking radiation, the black hole singularity that is initially hidden behind a
timelike... | [
{
"created": "Mon, 5 Jul 1999 08:10:28 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Kim",
"S. -W.",
""
],
[
"Lee",
"H.",
""
]
] | We present a specific two-dimensional dilaton gravity model in which a black hole evaporates leaving a wormhole at the end state. As the black hole formed by infalling matter in a initially static spacetime evaporates by emitting Hawking radiation, the black hole singularity that is initially hidden behind a timelike a... |
gr-qc/0007067 | Vitaly Melnikov | Vitaly N. Melnikov | Gravity as a Key Problem of the Millenium | 19 pages, LaTeX, no figures | null | null | null | gr-qc | null | Gravitation as a fundamental interaction that governs all phenomena at large
and very small scales, but still not well understood at a quantum level, is a
missing cardinal link to unification of all physical interactions. Problems of
the absolute G measurements and its possible time and range variations are
reflectio... | [
{
"created": "Tue, 25 Jul 2000 07:27:43 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Melnikov",
"Vitaly N.",
""
]
] | Gravitation as a fundamental interaction that governs all phenomena at large and very small scales, but still not well understood at a quantum level, is a missing cardinal link to unification of all physical interactions. Problems of the absolute G measurements and its possible time and range variations are reflections... |
gr-qc/0210048 | Graham Shore | G.M. Shore | Constructing Time Machines | 36 pages, 14 figures, TeX with harvmac; Review article prepared for
Int. J. Mod. Phys. A | Int.J.Mod.Phys. A18 (2003) 4169-4200 | 10.1142/S0217751X03015118 | SWAT 02/348 | gr-qc hep-th | null | The existence of time machines, understood as spacetime constructions
exhibiting physically realised closed timelike curves (CTCs), would raise
fundamental problems with causality and challenge our current understanding of
classical and quantum theories of gravity. In this paper, we investigate three
proposals for ti... | [
{
"created": "Tue, 15 Oct 2002 14:18:48 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Shore",
"G. M.",
""
]
] | The existence of time machines, understood as spacetime constructions exhibiting physically realised closed timelike curves (CTCs), would raise fundamental problems with causality and challenge our current understanding of classical and quantum theories of gravity. In this paper, we investigate three proposals for time... |
2105.03079 | Matt Visser | Jessica Santiago (Victoria University of Wellington), Sebastian
Schuster (Charles University of Prague), and Matt Visser (Victoria University
of Wellington) | Generic warp drives violate the null energy condition | V1: 37 pages, zero figures, 100 references. V2: 46 pages, one figure,
107 references. (This version closely resembles the final version accepted
and in press at PRD.) Arguments clarified and made more precise; no
significant change in physics conclusions. Several appendices added | null | 10.1103/PhysRevD.105.064038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Three very recent articles have claimed that it is possible to, at least in
theory, either set up positive energy warp drives satisfying the weak energy
condition (WEC), or at the very least, to minimize the WEC violations. These
claims are at best incomplete, since the arguments presented only demonstrate
the existe... | [
{
"created": "Fri, 7 May 2021 06:25:26 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Feb 2022 23:32:51 GMT",
"version": "v2"
}
] | 2022-04-06 | [
[
"Santiago",
"Jessica",
"",
"Victoria University of Wellington"
],
[
"Schuster",
"Sebastian",
"",
"Charles University of Prague"
],
[
"Visser",
"Matt",
"",
"Victoria University\n of Wellington"
]
] | Three very recent articles have claimed that it is possible to, at least in theory, either set up positive energy warp drives satisfying the weak energy condition (WEC), or at the very least, to minimize the WEC violations. These claims are at best incomplete, since the arguments presented only demonstrate the existenc... |
gr-qc/9610002 | Ladygin V. P. | V.P. Ladygin, N.B. Ladygina (LHE-JINR, Dubna, Moscow Region, Russia) | Full determination of the $dp$ backward elastic scattering matrix
element | 15 pages, LaTeX | J.Phys.G23:847-856,1997 | 10.1088/0954-3899/23/7/009 | E1-96-322 | gr-qc | null | The model independent analysis of the $dp$ elastic scattering in the
collinear geometry has been performed. It is shown that the measurements of 10
polarization observables of the first and second order realize the complete
experimental program on the determination of the amplitudes of the $dp$
backward elastic scatt... | [
{
"created": "Tue, 1 Oct 1996 14:48:03 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Ladygin",
"V. P.",
"",
"LHE-JINR, Dubna, Moscow Region, Russia"
],
[
"Ladygina",
"N. B.",
"",
"LHE-JINR, Dubna, Moscow Region, Russia"
]
] | The model independent analysis of the $dp$ elastic scattering in the collinear geometry has been performed. It is shown that the measurements of 10 polarization observables of the first and second order realize the complete experimental program on the determination of the amplitudes of the $dp$ backward elastic scatter... |
1810.06602 | Damianos Iosifidis | Damianos Iosifidis, Anastasios C. Petkou, Christos G. Tsagas | Torsion/non-metricity duality in f(R) gravity | 11 pages, no figures | null | 10.1007/s10714-019-2539-9 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Torsion and nonmetricity are inherent ingredients in modifications of
Eintein's gravity that are based on affine spacetime geometries. In the context
of pure f(R) gravity we discuss here, in some detail, the relatively unnoticed
duality between torsion and nonmetricity. In particular we show that for R2
gravity torsi... | [
{
"created": "Mon, 15 Oct 2018 18:28:06 GMT",
"version": "v1"
}
] | 2019-05-22 | [
[
"Iosifidis",
"Damianos",
""
],
[
"Petkou",
"Anastasios C.",
""
],
[
"Tsagas",
"Christos G.",
""
]
] | Torsion and nonmetricity are inherent ingredients in modifications of Eintein's gravity that are based on affine spacetime geometries. In the context of pure f(R) gravity we discuss here, in some detail, the relatively unnoticed duality between torsion and nonmetricity. In particular we show that for R2 gravity torsion... |
gr-qc/0404013 | Daniel Mayerhofer | D. Grumiller, D. Mayerhofer | On static solutions in 2D dilaton gravity with scalar matter | 33 pages, 2 eps-figures | Class.Quant.Grav. 21 (2004) 5893-5914 | 10.1088/0264-9381/21/24/012 | TUW-03-22 | gr-qc hep-th | null | Within the first order formalism static solutions of generic dilaton gravity
in 2D with self-interacting (scalar) matter can be discussed with ease. The
question of (non)existence of Killing horizons is addressed and the interplay
with asymptotic conditions is investigated. Naturally, such an analysis has to
be a glo... | [
{
"created": "Fri, 2 Apr 2004 13:57:54 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Jul 2004 10:56:42 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Oct 2004 14:10:19 GMT",
"version": "v3"
},
{
"created": "Fri, 26 Nov 2004 14:53:17 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Grumiller",
"D.",
""
],
[
"Mayerhofer",
"D.",
""
]
] | Within the first order formalism static solutions of generic dilaton gravity in 2D with self-interacting (scalar) matter can be discussed with ease. The question of (non)existence of Killing horizons is addressed and the interplay with asymptotic conditions is investigated. Naturally, such an analysis has to be a globa... |
1509.02685 | Roberto Chan | O. Goldoni, M.F.A. da Silva and R. Chan | Shear-free Dust Solution in General Covariant Ho\v{r}ava-Lifshitz
Gravity | 12 pages and 1 figure. arXiv admin note: substantial text overlap
with arXiv:1412.5045. Accepted for publication in Gen. Rel. Grav | General Relativity and Gravitation 48, 20 (2016) | 10.1007/s10714-015-2013-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have studied non stationary dust spherically symmetric
spacetime, in general covariant theory ($U(1)$ extension) of the
Ho\v{r}ava-Lifshitz gravity with the minimally coupling and non-minimum
coupling with matter, in the post-newtonian approximation (PPN) in the infrared
limit. The Newtonian prepote... | [
{
"created": "Wed, 9 Sep 2015 09:08:22 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Oct 2015 17:30:17 GMT",
"version": "v2"
},
{
"created": "Fri, 18 Dec 2015 19:14:00 GMT",
"version": "v3"
}
] | 2016-02-09 | [
[
"Goldoni",
"O.",
""
],
[
"da Silva",
"M. F. A.",
""
],
[
"Chan",
"R.",
""
]
] | In this paper, we have studied non stationary dust spherically symmetric spacetime, in general covariant theory ($U(1)$ extension) of the Ho\v{r}ava-Lifshitz gravity with the minimally coupling and non-minimum coupling with matter, in the post-newtonian approximation (PPN) in the infrared limit. The Newtonian prepotent... |
gr-qc/0506134 | J. Mark Heinzle | J. Mark Heinzle, Alan D. Rendall | Power-law Inflation in Spacetimes without Symmetry | 16 pages | Commun.Math.Phys. 269 (2007) 1-15 | 10.1007/s00220-006-0133-y | null | gr-qc | null | We consider models of accelerated cosmological expansion described by the
Einstein equations coupled to a nonlinear scalar field with a suitable
exponential potential. We show that homogeneous and isotropic solutions are
stable under small nonlinear perturbations without any symmetry assumptions.
Our proof is based o... | [
{
"created": "Wed, 29 Jun 2005 13:25:32 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Heinzle",
"J. Mark",
""
],
[
"Rendall",
"Alan D.",
""
]
] | We consider models of accelerated cosmological expansion described by the Einstein equations coupled to a nonlinear scalar field with a suitable exponential potential. We show that homogeneous and isotropic solutions are stable under small nonlinear perturbations without any symmetry assumptions. Our proof is based on ... |
1607.05715 | Artur Alho | Artur Alho, Sante Carloni, Claes Uggla | On dynamical systems approaches and methods in $f(R)$ cosmology | 36 pages, 7 figures. v2: references added, matches published version | null | 10.1088/1475-7516/2016/08/064 | null | gr-qc astro-ph.CO math-ph math.DS math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss dynamical systems approaches and methods applied to flat
Robertson-Walker models in $f(R)$-gravity. We argue that a complete description
of the solution space of a model requires a global state space analysis that
motivates globally covering state space adapted variables. This is shown
explicitly by an ill... | [
{
"created": "Tue, 19 Jul 2016 19:57:36 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Aug 2016 21:05:57 GMT",
"version": "v2"
}
] | 2016-09-07 | [
[
"Alho",
"Artur",
""
],
[
"Carloni",
"Sante",
""
],
[
"Uggla",
"Claes",
""
]
] | We discuss dynamical systems approaches and methods applied to flat Robertson-Walker models in $f(R)$-gravity. We argue that a complete description of the solution space of a model requires a global state space analysis that motivates globally covering state space adapted variables. This is shown explicitly by an illus... |
2012.03962 | Shahar Hod | Shahar Hod | Lower bound on the radii of black-hole photonspheres | 8 pages | Physical Review D 101, 084033 (2020) | 10.1103/PhysRevD.101.084033 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | The existence of closed null circular geodesics around black holes is one of
the most intriguing predictions of general relativity. It has recently been
conjectured that the radii of black-hole photonspheres are bounded from below
by the simple relation $r_{\text{ph}}\geq {3\over2}r_{\text{H}}$, where
$r_{\text{H}}$ ... | [
{
"created": "Mon, 7 Dec 2020 19:00:02 GMT",
"version": "v1"
}
] | 2020-12-16 | [
[
"Hod",
"Shahar",
""
]
] | The existence of closed null circular geodesics around black holes is one of the most intriguing predictions of general relativity. It has recently been conjectured that the radii of black-hole photonspheres are bounded from below by the simple relation $r_{\text{ph}}\geq {3\over2}r_{\text{H}}$, where $r_{\text{H}}$ is... |
2111.04388 | Georgios Karagiannis | Athanasios Chatzistavrakidis, Georgios Karagiannis, George Manolakos,
Peter Schupp | Axion gravitodynamics, Lense-Thirring effect, and gravitational waves | Minor changes; now matches the published version | Phys. Rev. D 105, 104029 (2022) | 10.1103/PhysRevD.105.104029 | RBI-ThPhys-2021-38 | gr-qc cond-mat.str-el hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate physical implications of a gravitational analog of axion
electrodynamics with a parity-violating gravitoelectromagnetic theta term. This
is related to the Nieh-Yan topological invariant in gravity with torsion, in
contrast to the well-studied gravitational Chern-Simons term quadratic in
curvature, coup... | [
{
"created": "Mon, 8 Nov 2021 11:19:33 GMT",
"version": "v1"
},
{
"created": "Tue, 17 May 2022 10:36:25 GMT",
"version": "v2"
}
] | 2022-05-18 | [
[
"Chatzistavrakidis",
"Athanasios",
""
],
[
"Karagiannis",
"Georgios",
""
],
[
"Manolakos",
"George",
""
],
[
"Schupp",
"Peter",
""
]
] | We investigate physical implications of a gravitational analog of axion electrodynamics with a parity-violating gravitoelectromagnetic theta term. This is related to the Nieh-Yan topological invariant in gravity with torsion, in contrast to the well-studied gravitational Chern-Simons term quadratic in curvature, couple... |
1910.04800 | Pratik Wagle | Pratik Wagle, Alexander Saffer and Nicolas Yunes | Polarization modes of gravitational waves in Quadratic Gravity | 14 pages, 1 figure, Submitted to PRD | Phys. Rev. D 100, 124007 (2019) | 10.1103/PhysRevD.100.124007 | Phys. Rev. D 100, 124007 | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The observation of the inspiral and merger of compact binaries by the
LIGO-Virgo collaboration has allowed for new tests of Einstein's theory in the
extreme gravity regime, where gravitational interactions are simultaneously
strong, non-linear, and dynamical. Theories beyond Einstein's can also be
constrained by dete... | [
{
"created": "Thu, 10 Oct 2019 18:29:05 GMT",
"version": "v1"
}
] | 2019-12-11 | [
[
"Wagle",
"Pratik",
""
],
[
"Saffer",
"Alexander",
""
],
[
"Yunes",
"Nicolas",
""
]
] | The observation of the inspiral and merger of compact binaries by the LIGO-Virgo collaboration has allowed for new tests of Einstein's theory in the extreme gravity regime, where gravitational interactions are simultaneously strong, non-linear, and dynamical. Theories beyond Einstein's can also be constrained by detect... |
0808.2272 | L. C. Garcia de Andrade | Garcia de Andrade | Effective black holes from non-Riemannian vortex acoustics in ABC flows | Dept Fisica Teorica-IF-UERJ-Brasil | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Since Alfven, dynamo and sound waves and the existence of general
relativistic black holes are well stablished in plasma physics, this provides
enough motivation to investigate the presence of acoustic black-hole effective
metric of analogue Einstein's gravity in dynamo flows. From nonlinear dynamo
equations, one obt... | [
{
"created": "Sat, 16 Aug 2008 20:47:26 GMT",
"version": "v1"
}
] | 2008-08-19 | [
[
"de Andrade",
"Garcia",
""
]
] | Since Alfven, dynamo and sound waves and the existence of general relativistic black holes are well stablished in plasma physics, this provides enough motivation to investigate the presence of acoustic black-hole effective metric of analogue Einstein's gravity in dynamo flows. From nonlinear dynamo equations, one obtai... |
gr-qc/9811053 | Fotini Markopoulou | Fotini Markopoulou | The internal description of a causal set: What the universe looks like
from the inside | Version to appear in Comm.Math.Phys. (minor modifications). 37 pages,
several eps figures | Commun.Math.Phys.211:559-583,2000 | 10.1007/s002200050826 | null | gr-qc hep-th | null | We describe an algebraic way to code the causal information of a discrete
spacetime. The causal set C is transformed to a description in terms of the
causal pasts of the events in C. This is done by an evolving set, a functor
which to each event of C assigns its causal past. Evolving sets obey a Heyting
algebra which... | [
{
"created": "Tue, 17 Nov 1998 19:28:10 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Nov 1999 17:32:41 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Markopoulou",
"Fotini",
""
]
] | We describe an algebraic way to code the causal information of a discrete spacetime. The causal set C is transformed to a description in terms of the causal pasts of the events in C. This is done by an evolving set, a functor which to each event of C assigns its causal past. Evolving sets obey a Heyting algebra which i... |
gr-qc/9803060 | Saulo Carneiro | F. Bunchaft and S. Carneiro | The static spacetime relative acceleration for the general free fall and
its possible experimental test | To appear in Classical and Quantum Gravity, 15 pages, Latex | Class.Quant.Grav.15:1557,1998 | 10.1088/0264-9381/15/6/012 | null | gr-qc | null | Mishra has recently established, using a generic static metric, the relative
local proper-time 3-acceleration of a test-particle in one-dimensional free
fall relative to a static reference frame in any static spacetime. In this
paper, on the grounds of gravitoelectromagnetism we establish, in a covariant
spacetime fo... | [
{
"created": "Tue, 17 Mar 1998 14:03:03 GMT",
"version": "v1"
}
] | 2010-03-19 | [
[
"Bunchaft",
"F.",
""
],
[
"Carneiro",
"S.",
""
]
] | Mishra has recently established, using a generic static metric, the relative local proper-time 3-acceleration of a test-particle in one-dimensional free fall relative to a static reference frame in any static spacetime. In this paper, on the grounds of gravitoelectromagnetism we establish, in a covariant spacetime form... |
1110.4773 | Kazuyuki Sugimura | Kazuyuki Sugimura, Daisuke Yamauchi and Misao Sasaki | Multi-field open inflation model and multi-field dynamics in tunneling | 13 pages, 4 figures | null | 10.1088/1475-7516/2012/01/027 | YITP-11-88; ICRR-Report-596-2011-13 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a multi-field open inflation model, in which one of the fields
dominates quantum tunneling from a false vacuum while the other field governs
slow-roll inflation within the bubble nucleated from false vacuum decay. We
call the former the tunneling field and the latter the inflaton field. In the
limit of a ... | [
{
"created": "Fri, 21 Oct 2011 12:23:33 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Nov 2011 02:13:37 GMT",
"version": "v2"
}
] | 2015-05-30 | [
[
"Sugimura",
"Kazuyuki",
""
],
[
"Yamauchi",
"Daisuke",
""
],
[
"Sasaki",
"Misao",
""
]
] | We consider a multi-field open inflation model, in which one of the fields dominates quantum tunneling from a false vacuum while the other field governs slow-roll inflation within the bubble nucleated from false vacuum decay. We call the former the tunneling field and the latter the inflaton field. In the limit of a ne... |
1508.07261 | Tom Chang | Tom T.S. Chang | Complexity Induced Sporadic Localized Multifractal Antiscreening in
Gravitational Evolution at Large Scales | 16 pages | null | null | null | gr-qc astro-ph.CO cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has been suggested that antiscreening effects due to the running of the
gravitational constant G might provide a partial solution to the dark matter
mystery. It has also been hypothesized that renormalization group scaling
transformations at large scales might supply the theoretical explanation. In
this letter, we... | [
{
"created": "Thu, 27 Aug 2015 02:45:13 GMT",
"version": "v1"
}
] | 2015-08-31 | [
[
"Chang",
"Tom T. S.",
""
]
] | It has been suggested that antiscreening effects due to the running of the gravitational constant G might provide a partial solution to the dark matter mystery. It has also been hypothesized that renormalization group scaling transformations at large scales might supply the theoretical explanation. In this letter, we d... |
1504.02993 | Francisco Diego Mazzitelli | Mauro El\'ias and Francisco D. Mazzitelli | Ultraviolet cutoffs for quantum fields in cosmological spacetimes | 19 pages. Minor changes. References added | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze critically the renormalization of quantum fields in cosmological
spacetimes, using non covariant ultraviolet cutoffs. We compute explicitly the
counterterms necessary to renormalize the semiclassical Einstein equations,
using comoving and physical ultraviolet cutoffs. In the first case, the
divergences ren... | [
{
"created": "Sun, 12 Apr 2015 17:24:51 GMT",
"version": "v1"
},
{
"created": "Sat, 25 Apr 2015 09:31:47 GMT",
"version": "v2"
}
] | 2015-04-28 | [
[
"Elías",
"Mauro",
""
],
[
"Mazzitelli",
"Francisco D.",
""
]
] | We analyze critically the renormalization of quantum fields in cosmological spacetimes, using non covariant ultraviolet cutoffs. We compute explicitly the counterterms necessary to renormalize the semiclassical Einstein equations, using comoving and physical ultraviolet cutoffs. In the first case, the divergences renor... |
2201.02581 | Lang Liu | Lang Liu and Sang Pyo Kim | Merger rate of charged black holes from the two-body dynamical capture | 17 pages, 2 figures | JCAP03(2022)059 | 10.1088/1475-7516/2022/03/059 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the two-body dynamical capture of black holes carrying U(1)
charge which can not only correspond to electric or magnetic charge but also
have other physical interpretations such as dark or hidden charge. In the
low-velocity and weak-field regime, we study gravitational and electromagnetic
radiations from ... | [
{
"created": "Thu, 6 Jan 2022 16:44:21 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Mar 2022 14:16:57 GMT",
"version": "v2"
},
{
"created": "Sun, 17 Apr 2022 13:31:39 GMT",
"version": "v3"
}
] | 2022-04-19 | [
[
"Liu",
"Lang",
""
],
[
"Kim",
"Sang Pyo",
""
]
] | We consider the two-body dynamical capture of black holes carrying U(1) charge which can not only correspond to electric or magnetic charge but also have other physical interpretations such as dark or hidden charge. In the low-velocity and weak-field regime, we study gravitational and electromagnetic radiations from po... |
2203.03983 | Amin Salehi | M. Yarahmadi, S. Fathi, A. Salehi | Can Chameleon fields be the source of both the dark energy dipole and
the CMB dipole? | 17 pages , 6 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent research shows that the local group is moving toward (l,b)=(276,30)
relative to the cosmic background radiation at a speed of about $600 kms^{-1}$
which is known as the cosmic background radiation dipole. The exact cause of
this movement is still unknown. Areas with high mass densities such as galactic
supercl... | [
{
"created": "Tue, 8 Mar 2022 10:17:46 GMT",
"version": "v1"
}
] | 2022-03-09 | [
[
"Yarahmadi",
"M.",
""
],
[
"Fathi",
"S.",
""
],
[
"Salehi",
"A.",
""
]
] | Recent research shows that the local group is moving toward (l,b)=(276,30) relative to the cosmic background radiation at a speed of about $600 kms^{-1}$ which is known as the cosmic background radiation dipole. The exact cause of this movement is still unknown. Areas with high mass densities such as galactic superclus... |
gr-qc/9801111 | Alpan Raval | Leonard Parker and Alpan Raval | Relation Between Einstein And Quantum Field Equations | Latex, 24 pages. Minor changes in text from original version | Phys.Rev. D57 (1998) 7327-7339 | 10.1103/PhysRevD.57.7327 | WISC-MILW-TH-98-10 | gr-qc | null | We show that there exists a choice of scalar field modes, such that the
evolution of the quantum field in the zero-mass and large-mass limits is
consistent with the Einstein equations for the background geometry. This choice
of modes is also consistent with zero production of these particles and thus
corresponds to a... | [
{
"created": "Fri, 30 Jan 1998 22:04:05 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Feb 1998 17:26:10 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Parker",
"Leonard",
""
],
[
"Raval",
"Alpan",
""
]
] | We show that there exists a choice of scalar field modes, such that the evolution of the quantum field in the zero-mass and large-mass limits is consistent with the Einstein equations for the background geometry. This choice of modes is also consistent with zero production of these particles and thus corresponds to a p... |
1108.3121 | Marc Favata | Marc Favata | The gravitational-wave memory from eccentric binaries | 25 pages, 8 figures. v2: minor changes to match published version | Phys.Rev.D84:124013,2011 | 10.1103/PhysRevD.84.124013 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nonlinear gravitational-wave memory causes a time-varying but
nonoscillatory correction to the gravitational-wave polarizations. It arises
from gravitational waves that are sourced by gravitational waves. Previous
considerations of the nonlinear memory effect have focused on quasicircular
binaries. Here, I consid... | [
{
"created": "Mon, 15 Aug 2011 23:55:11 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Jan 2012 04:18:11 GMT",
"version": "v2"
}
] | 2012-01-06 | [
[
"Favata",
"Marc",
""
]
] | The nonlinear gravitational-wave memory causes a time-varying but nonoscillatory correction to the gravitational-wave polarizations. It arises from gravitational waves that are sourced by gravitational waves. Previous considerations of the nonlinear memory effect have focused on quasicircular binaries. Here, I consider... |
1912.05154 | Rahul Kumar | Rahul Kumar, Sushant G. Ghosh, Anzhong Wang | Shadow cast and deflection of light by charged rotating regular black
holes | 32 Pages, 14 figures and 4 tables | Phys. Rev. D 100, 124024 (2019) | 10.1103/PhysRevD.100.124024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the horizon properties, shadow cast, and the weak gravitational
lensing of charged rotating regular black holes, which in addition to mass
($M$) and rotation parameter ($a$) have an electric charge ($Q$) and magnetic
charge ($g$). The considered regular black holes are the generalization of the
Kerr ($Q=g=... | [
{
"created": "Wed, 11 Dec 2019 07:54:16 GMT",
"version": "v1"
}
] | 2019-12-12 | [
[
"Kumar",
"Rahul",
""
],
[
"Ghosh",
"Sushant G.",
""
],
[
"Wang",
"Anzhong",
""
]
] | We discuss the horizon properties, shadow cast, and the weak gravitational lensing of charged rotating regular black holes, which in addition to mass ($M$) and rotation parameter ($a$) have an electric charge ($Q$) and magnetic charge ($g$). The considered regular black holes are the generalization of the Kerr ($Q=g=0$... |
1208.0106 | Hongsheng Zhang | Hongsheng Zhang, Xin-Zhou Li | Critical behaviors of gravity under quantum perturbations | 6 pages, two figures,match the published version | Journal of Shanghai Normal University( Natural
Sciences)V43,1,P44(2014) | 10.3969/J.ISSN.1000-5137.2014.01.006 | null | gr-qc cond-mat.stat-mech hep-th | http://creativecommons.org/licenses/by/3.0/ | Phase transition and critical phenomenon is a very interesting topic in
thermodynamics and statistical mechanics. Gravity is believed to has deep and
inherent relation to thermodynamics. Near the critical point, the perturbation
becomes significant. Thus for ordinary matter (govern by interactions besides
gravity) th... | [
{
"created": "Wed, 1 Aug 2012 05:32:25 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Dec 2014 13:02:56 GMT",
"version": "v2"
}
] | 2014-12-22 | [
[
"Zhang",
"Hongsheng",
""
],
[
"Li",
"Xin-Zhou",
""
]
] | Phase transition and critical phenomenon is a very interesting topic in thermodynamics and statistical mechanics. Gravity is believed to has deep and inherent relation to thermodynamics. Near the critical point, the perturbation becomes significant. Thus for ordinary matter (govern by interactions besides gravity) the ... |
1808.06692 | Carlos A. R. Herdeiro | Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu | Isolated black holes without $\mathbb{Z}_2$ isometry | 6 pages, 5 figures; v2. Matches the version to be published in Phys.
Rev. D | Phys. Rev. D 98, 104060 (2018) | 10.1103/PhysRevD.98.104060 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A mechanism to construct asymptotically flat, isolated, stationary black hole
(BH) spacetimes with no $\mathbb{Z}_2$ (No$\mathbb{Z}$) isometry is described.
In particular, the horizon geometry of such No$\mathbb{Z}$ BHs does not have
the usual north-south (reflection) symmetry. We discuss two explicit families
of mod... | [
{
"created": "Mon, 20 Aug 2018 21:03:35 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Nov 2018 13:54:43 GMT",
"version": "v2"
}
] | 2018-12-05 | [
[
"Cunha",
"Pedro V. P.",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
]
] | A mechanism to construct asymptotically flat, isolated, stationary black hole (BH) spacetimes with no $\mathbb{Z}_2$ (No$\mathbb{Z}$) isometry is described. In particular, the horizon geometry of such No$\mathbb{Z}$ BHs does not have the usual north-south (reflection) symmetry. We discuss two explicit families of model... |
1504.07637 | Piero Nicolini | Bernard J. Carr and Jonas Mureika and Piero Nicolini | Sub-Planckian black holes and the Generalized Uncertainty Principle | 12 pages, 9 figures, version published in J. High En. Phys | JHEP 1507 (2015) 052 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Black Hole Uncertainty Principle correspondence suggests that there could
exist black holes with mass beneath the Planck scale but radius of order the
Compton scale rather than Schwarzschild scale. We present a modified, self-dual
Schwarzschild-like metric that reproduces desirable aspects of a variety of
dispara... | [
{
"created": "Tue, 28 Apr 2015 20:00:49 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Jul 2015 16:34:56 GMT",
"version": "v2"
}
] | 2015-07-20 | [
[
"Carr",
"Bernard J.",
""
],
[
"Mureika",
"Jonas",
""
],
[
"Nicolini",
"Piero",
""
]
] | The Black Hole Uncertainty Principle correspondence suggests that there could exist black holes with mass beneath the Planck scale but radius of order the Compton scale rather than Schwarzschild scale. We present a modified, self-dual Schwarzschild-like metric that reproduces desirable aspects of a variety of disparate... |
1106.5072 | Giancarlo Cella | F. Bosi, G. Cella, A. Di Virgilio, A.Ortolan, A. Porzio, S. Solimeno,
M. Cerdonio, J. P. Zendri, M. Allegrini, J. Belfi, N. Beverini, B. Bouhadef,
l G. Carelli, I. Ferrante, E. Maccioni, R. Passaquieti, F. Stefani, M. L.
Ruggiero, A. Tartaglia, K. U. Schreiber, A. Gebauer, and J-P. R. Wells | Measuring Gravito-magnetic Effects by Multi Ring-Laser Gyroscope | 24 pages, 26 Postscript figures | Phys. Rev. D 84, 122002 (2011) | 10.1103/PhysRevD.84.122002 | null | gr-qc physics.geo-ph physics.ins-det physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose an under-ground experiment to detect the general relativistic
effects due to the curvature of space-time around the Earth (de Sitter effect)
and to rotation of the planet (dragging of the inertial frames or
Lense-Thirring effect). It is based on the comparison between the IERS value of
the Earth rotation v... | [
{
"created": "Fri, 24 Jun 2011 22:02:45 GMT",
"version": "v1"
}
] | 2011-12-20 | [
[
"Bosi",
"F.",
""
],
[
"Cella",
"G.",
""
],
[
"Di Virgilio",
"A.",
""
],
[
"Ortolan",
"A.",
""
],
[
"Porzio",
"A.",
""
],
[
"Solimeno",
"S.",
""
],
[
"Cerdonio",
"M.",
""
],
[
"Zendri",
"J. P.",
... | We propose an under-ground experiment to detect the general relativistic effects due to the curvature of space-time around the Earth (de Sitter effect) and to rotation of the planet (dragging of the inertial frames or Lense-Thirring effect). It is based on the comparison between the IERS value of the Earth rotation vec... |
0807.0207 | Maciej Dunajski | Maciej Dunajski and Gary Gibbons | Cosmic Jerk, Snap and Beyond | 10 pages. Minor revisions, added summary. Final version to appear in
CQG | Class.Quant.Grav.25:235012,2008 | 10.1088/0264-9381/25/23/235012 | DAMTP-2008-58 | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We clarify the procedure for expressing the Friedmann equation in terms of
directly measurable cosmological scalars constructed out of higher derivatives
of the scale factor. We carry out this procedure for pure dust, Chaplygin gas
and generalised Chaplygin gas energy-momentum tensors. In each case it leads to
a cons... | [
{
"created": "Tue, 1 Jul 2008 17:22:02 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Sep 2008 12:52:50 GMT",
"version": "v2"
}
] | 2008-12-18 | [
[
"Dunajski",
"Maciej",
""
],
[
"Gibbons",
"Gary",
""
]
] | We clarify the procedure for expressing the Friedmann equation in terms of directly measurable cosmological scalars constructed out of higher derivatives of the scale factor. We carry out this procedure for pure dust, Chaplygin gas and generalised Chaplygin gas energy-momentum tensors. In each case it leads to a constr... |
0805.4505 | Alfonso Garc\'ia-Parrado G\'omez-Lobo Dr. | Alfonso Garc\'ia-Parrado G\'omez-Lobo and Juan A. Valiente Kroon | Kerr Initial data | 23 pages, 1 figure. Minor typos corrected and remark 2 added. To
appear in Classical and Quantum Gravity | Class.Quant.Grav.25:205018,2008 | 10.1088/0264-9381/25/20/205018 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Exploiting a 3+1 analysis of the Mars-Simon tensor, conditions on a vacuum
initial data set ensuring that its development is isometric to a subset of the
Kerr spacetime are found. These conditions are expressed in terms of the
vanishing of a positive scalar function defined on the initial data
hypersurface. Applicati... | [
{
"created": "Thu, 29 May 2008 10:15:08 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Aug 2008 15:58:23 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Gómez-Lobo",
"Alfonso García-Parrado",
""
],
[
"Kroon",
"Juan A. Valiente",
""
]
] | Exploiting a 3+1 analysis of the Mars-Simon tensor, conditions on a vacuum initial data set ensuring that its development is isometric to a subset of the Kerr spacetime are found. These conditions are expressed in terms of the vanishing of a positive scalar function defined on the initial data hypersurface. Application... |
2208.06754 | Simran Arora | Tee-How Loo, Avik De, Simran Arora, P.K. Sahoo | Impact of curvature based geometric constraints on $F(R)$ theory | EPJC accepted version | European Physical Journal C 82 (2022) 705 | 10.1140/epjc/s10052-022-10672-8 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Theories of gravity are fundamentally a relation between matter and the
geometric structure of the underlying spacetime. So once we put some additional
restrictions on the spacetime geometry, the theory of gravity is bound to get
the impact, irrespective of whether it is general relativity or the modified
theories of... | [
{
"created": "Sun, 14 Aug 2022 01:14:52 GMT",
"version": "v1"
}
] | 2022-08-16 | [
[
"Loo",
"Tee-How",
""
],
[
"De",
"Avik",
""
],
[
"Arora",
"Simran",
""
],
[
"Sahoo",
"P. K.",
""
]
] | Theories of gravity are fundamentally a relation between matter and the geometric structure of the underlying spacetime. So once we put some additional restrictions on the spacetime geometry, the theory of gravity is bound to get the impact, irrespective of whether it is general relativity or the modified theories of g... |
1204.2411 | Chul-Moon Yoo | Chul-Moon Yoo, Hiroyuki Abe, Yohsuke Takamori and Ken-ichi Nakao | Black Hole Universe: Construction and Analysis of Initial Data | 24 pages, 12 figures, analyses have been improved in the 2nd version | null | 10.1103/PhysRevD.86.044027 | YITP-12-29; OCU-PHYS-365; AP-GR-97 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We numerically construct an one-parameter family of initial data of an
expanding inhomogeneous universe model which is composed of regularly aligned
black holes with an identical mass. They are initial data for vacuum solutions
of the Einstein equations. We call this universe model the "black hole
universe" and analy... | [
{
"created": "Wed, 11 Apr 2012 10:57:37 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jun 2012 03:04:47 GMT",
"version": "v2"
}
] | 2013-05-30 | [
[
"Yoo",
"Chul-Moon",
""
],
[
"Abe",
"Hiroyuki",
""
],
[
"Takamori",
"Yohsuke",
""
],
[
"Nakao",
"Ken-ichi",
""
]
] | We numerically construct an one-parameter family of initial data of an expanding inhomogeneous universe model which is composed of regularly aligned black holes with an identical mass. They are initial data for vacuum solutions of the Einstein equations. We call this universe model the "black hole universe" and analyze... |
1910.03100 | Mar\'ia Jos\'e Guzm\'an | Mar\'ia Jos\'e Guzm\'an, Rafael Ferraro | Degrees of freedom and Hamiltonian formalism for $f(T)$ gravity | 4 pages, no figures, to appear in the conference proceedings of the
10th Alexander Friedmann International Seminar on Gravitation and Cosmology,
International Journal of Modern Physics A, World Scientific Publishing
Company | Int. J. Mod. Phys. A 35, No. 02n03, 2040022 (2020) | 10.1142/S0217751X20400229 | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | The existence of an extra degree of freedom (d.o.f.) in $f(T)$ gravity has
been recently proved by means of the Dirac formalism for constrained
Hamiltonian systems. We will show a toy model displaying the essential feature
of $f(T)$ gravity, which is the pseudoinvariance of T under a local symmetry,
to understand the... | [
{
"created": "Mon, 7 Oct 2019 21:42:03 GMT",
"version": "v1"
}
] | 2020-04-09 | [
[
"Guzmán",
"María José",
""
],
[
"Ferraro",
"Rafael",
""
]
] | The existence of an extra degree of freedom (d.o.f.) in $f(T)$ gravity has been recently proved by means of the Dirac formalism for constrained Hamiltonian systems. We will show a toy model displaying the essential feature of $f(T)$ gravity, which is the pseudoinvariance of T under a local symmetry, to understand the n... |
2211.16189 | Vitalii Vertogradov | Vitalii Vertogradov | On the particle collisions during gravitational collapse of Vaidya
spacetimes | 11 pages, corrected version | Physics of Complex Systems. - 2023. - Volume 4, N 1. - P. 17-23 | 10.33910/2687-153X-2022-4-1-17-23 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The center-of-mass energy can be arbitrarily high in Schwarzschild spacetime
if one considers the front collision of two particles, one of which moves along
so-called white hole geodesics and another one along a black hole geodesic.
This process can take place if one considers the gravitational collapse model.
In thi... | [
{
"created": "Tue, 29 Nov 2022 13:33:11 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Nov 2023 12:38:41 GMT",
"version": "v2"
}
] | 2023-11-21 | [
[
"Vertogradov",
"Vitalii",
""
]
] | The center-of-mass energy can be arbitrarily high in Schwarzschild spacetime if one considers the front collision of two particles, one of which moves along so-called white hole geodesics and another one along a black hole geodesic. This process can take place if one considers the gravitational collapse model. In this ... |
2203.04257 | Vyacheslav Dokuchaev | V. A. Berezin and V. I. Dokuchaev | Weyl cosmology | 10 pages | IJMPA Vol. 37, No. 20n21, 2243005 (2022) | 10.1142/S0217751X22430059 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The homogeneous and isotropic cosmological model in the Weyl conformal
geometry is considered. We showed that, despite the conformal invariance, the
dust matter is allowed in such a universe. It is shown that the number of dust
particles is not conserved, i. e., they are continuously produced. The general
form of the... | [
{
"created": "Tue, 8 Mar 2022 18:19:17 GMT",
"version": "v1"
}
] | 2022-10-14 | [
[
"Berezin",
"V. A.",
""
],
[
"Dokuchaev",
"V. I.",
""
]
] | The homogeneous and isotropic cosmological model in the Weyl conformal geometry is considered. We showed that, despite the conformal invariance, the dust matter is allowed in such a universe. It is shown that the number of dust particles is not conserved, i. e., they are continuously produced. The general form of the l... |
2010.01857 | Juan Calderon Bustillo | Juan Calder\'on Bustillo, Paul D. Lasky and Eric Thrane | Black-hole spectroscopy, the no-hair theorem and GW150914: Kerr vs.
Occam | 12 pages, 4 figures, Version Accepted for publication in Phys.Rev.D | Phys. Rev. D 103, 024041 (2021) | 10.1103/PhysRevD.103.024041 | LIGO P-2000372 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The "no-hair" theorem states that astrophysical black holes are fully
characterised by just two numbers: their mass and spin. The gravitational-wave
emission from a perturbed black-hole consists of a superposition of damped
sinusoids, known as \textit{quasi-normal modes}. Quasi-normal modes are
specified by three int... | [
{
"created": "Mon, 5 Oct 2020 08:43:43 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Jan 2021 23:51:08 GMT",
"version": "v2"
}
] | 2021-02-03 | [
[
"Bustillo",
"Juan Calderón",
""
],
[
"Lasky",
"Paul D.",
""
],
[
"Thrane",
"Eric",
""
]
] | The "no-hair" theorem states that astrophysical black holes are fully characterised by just two numbers: their mass and spin. The gravitational-wave emission from a perturbed black-hole consists of a superposition of damped sinusoids, known as \textit{quasi-normal modes}. Quasi-normal modes are specified by three integ... |
1001.2621 | Kouji Nakamura | Kouji Nakamura | Second-order Gauge-invariant Cosmological Perturbation Theory: Current
Status | 26 pages, 2 figures, Summary report on the current status of the
second-order gauge-invariant cosmological perturbation theory, Published as
an invited review in the Special Issue "Testing the Gaussianity and
Statistical Isotropy of the Universe" in Advances in Astronomy | Advances in Astronomy vol. 2010 (2010), 576273 | 10.1155/2010/576273 | null | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The current status of the recent developments of the second-order
gauge-invariant cosmological perturbation theory is reviewed. To show the
essence of this perturbation theory, we concentrate only on the universe filled
with a single scalar field. Through this review, we point out the problems
which should be clarifi... | [
{
"created": "Fri, 15 Jan 2010 06:43:23 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Dec 2010 06:14:28 GMT",
"version": "v2"
}
] | 2016-08-24 | [
[
"Nakamura",
"Kouji",
""
]
] | The current status of the recent developments of the second-order gauge-invariant cosmological perturbation theory is reviewed. To show the essence of this perturbation theory, we concentrate only on the universe filled with a single scalar field. Through this review, we point out the problems which should be clarified... |
1301.6353 | Soon-Tae Hong | Soon-Tae Hong | Geometrical and hydrodynamic aspects of five-dimensional Schwarzschild
black hole | 8 pages | null | 10.3938/jkps.64.1928 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Exploiting the five-dimensional Schwarzschild black hole, we study the
geometrical natures of the higher dimensional black hole to yield the (6+1)
dimensional global embedding Minkowski space structure. We next obtain the
Hawking temperature on this five-dimensional manifold, whose result is
different from the four-d... | [
{
"created": "Sun, 27 Jan 2013 14:08:28 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Hong",
"Soon-Tae",
""
]
] | Exploiting the five-dimensional Schwarzschild black hole, we study the geometrical natures of the higher dimensional black hole to yield the (6+1) dimensional global embedding Minkowski space structure. We next obtain the Hawking temperature on this five-dimensional manifold, whose result is different from the four-dim... |
1510.07561 | Alfonso Garc\'ia-Parrado G\'omez-Lobo Dr. | Alfonso Garc\'ia-Parrado G\'omez-Lobo | A local non-negative initial data scalar characterisation of the Kerr
solution | 18 pages, no figures. Typos corrected and dropped artificial
restriction on the vacuum initial data set used to define the positive
scalar. To appear in Physical Review D | Phys. Rev. D 92, 124053 (2015) | 10.1103/PhysRevD.92.124053 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For any vacuum initial data set, we define a local, non-negative scalar
quantity which vanishes at every point of the data hypersurface if and only if
the data are {\em Kerr initial} data. Our scalar quantity only depends on the
quantities used to construct the vacuum initial data set which are the
Riemannian metric ... | [
{
"created": "Mon, 26 Oct 2015 17:39:47 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Nov 2015 13:27:25 GMT",
"version": "v2"
}
] | 2015-12-30 | [
[
"Gómez-Lobo",
"Alfonso García-Parrado",
""
]
] | For any vacuum initial data set, we define a local, non-negative scalar quantity which vanishes at every point of the data hypersurface if and only if the data are {\em Kerr initial} data. Our scalar quantity only depends on the quantities used to construct the vacuum initial data set which are the Riemannian metric de... |
2010.02161 | Sebasti\'an Bahamonde Dr | Sebastian Bahamonde, Christian Pfeifer | General Teleparallel Modifications of Schwarzschild Geometry | 17 pages; v2 has some new additions matching the published version | Int. J. Geom. Methods Mod. Phys. 18 (2021) | 10.1142/S0219887821400016 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Teleparallel theories of gravity are described in terms of the tetrad of a
metric and a flat connection with torsion. In this paper, we study spherical
symmetry in a modified teleparallel theory of gravity which is based on an
arbitrary function of the five possible scalars constructed from the
irreducible parts of t... | [
{
"created": "Mon, 5 Oct 2020 17:08:49 GMT",
"version": "v1"
},
{
"created": "Wed, 5 May 2021 00:18:53 GMT",
"version": "v2"
}
] | 2021-05-06 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Pfeifer",
"Christian",
""
]
] | Teleparallel theories of gravity are described in terms of the tetrad of a metric and a flat connection with torsion. In this paper, we study spherical symmetry in a modified teleparallel theory of gravity which is based on an arbitrary function of the five possible scalars constructed from the irreducible parts of tor... |
1503.06109 | W. G. Unruh | M. Hotta, R. Sch\"utzhold, W. G. Unruh | On the partner particles for moving mirror radiation and black hole
evaporation | 12 pages, 3 figures-- v3-- corrected typos and a few notation
inconsistencies | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The partner mode with respect to a vacuum state for a given mode (like that
corresponding to one of the thermal particles emitted by a black hole) is
defined and calculated. The partner modes are explicitly calculated for a
number of cases, in particular for the modes corresponding to a particle
detector being excite... | [
{
"created": "Fri, 20 Mar 2015 15:29:05 GMT",
"version": "v1"
},
{
"created": "Sat, 18 Apr 2015 19:48:55 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Apr 2015 19:31:13 GMT",
"version": "v3"
}
] | 2015-04-22 | [
[
"Hotta",
"M.",
""
],
[
"Schützhold",
"R.",
""
],
[
"Unruh",
"W. G.",
""
]
] | The partner mode with respect to a vacuum state for a given mode (like that corresponding to one of the thermal particles emitted by a black hole) is defined and calculated. The partner modes are explicitly calculated for a number of cases, in particular for the modes corresponding to a particle detector being excited ... |
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