id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0812.4712 | Peter K.F. Kuhfittig | Peter K.F. Kuhfittig | Could some black holes have evolved from wormholes? | 7 pages, 1 figure, updated version to incorporate recent findings | Schol.Res.Exch.2008:296158,2008 | 10.3814/2008/296158 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One way to explain the present acceleration of the Universe is Einstein's
cosmological constant. It is quite likely, in view of some recent studies, that
a time-dependent equation of state had caused the Universe to evolve from an
earlier phantom-energy model. In that case traversable wormholes could have
formed spon... | [
{
"created": "Mon, 29 Dec 2008 15:21:56 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Jan 2009 18:15:17 GMT",
"version": "v2"
},
{
"created": "Sat, 20 Nov 2010 14:43:43 GMT",
"version": "v3"
},
{
"created": "Fri, 24 Dec 2010 15:56:36 GMT",
"version": "v4"
},
{
"c... | 2011-05-03 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | One way to explain the present acceleration of the Universe is Einstein's cosmological constant. It is quite likely, in view of some recent studies, that a time-dependent equation of state had caused the Universe to evolve from an earlier phantom-energy model. In that case traversable wormholes could have formed sponta... |
2105.12413 | Junji Jia | Xiaoge Xu, Tingyuan Jiang and Junji Jia | Deflection angle with electromagnetic interaction and
gravitational-electromagnetic dual lensing | 16 pages, 6 figures, 1 table; to appear in JCAP | null | 10.1088/1475-7516/2021/08/022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The trajectory deflection and gravitational-electromagnetic dual lensing
(GEL) of charged signal in general charged static and spherically symmetric
spacetimes are considered in this work. We showed that the perturbative
approach previously developed for neutral particles can be extended to the
electromagnetic intera... | [
{
"created": "Wed, 26 May 2021 09:07:43 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Aug 2021 15:51:53 GMT",
"version": "v2"
}
] | 2021-08-25 | [
[
"Xu",
"Xiaoge",
""
],
[
"Jiang",
"Tingyuan",
""
],
[
"Jia",
"Junji",
""
]
] | The trajectory deflection and gravitational-electromagnetic dual lensing (GEL) of charged signal in general charged static and spherically symmetric spacetimes are considered in this work. We showed that the perturbative approach previously developed for neutral particles can be extended to the electromagnetic interact... |
2303.15512 | Maxime Gadioux | Maxime Gadioux and Harvey S. Reall | Creases, corners and caustics: properties of non-smooth structures on
black hole horizons | v2: improved discussion of crease entropy; added discussion of Bousso
bound | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The event horizon of a dynamical black hole is generically a non-smooth
hypersurface. We classify the types of non-smooth structure that can arise on a
horizon that is smooth at late time. The classification includes creases,
corners and caustic points. We prove that creases and corners form spacelike
submanifolds of... | [
{
"created": "Mon, 27 Mar 2023 18:00:05 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Sep 2023 15:47:17 GMT",
"version": "v2"
}
] | 2023-09-13 | [
[
"Gadioux",
"Maxime",
""
],
[
"Reall",
"Harvey S.",
""
]
] | The event horizon of a dynamical black hole is generically a non-smooth hypersurface. We classify the types of non-smooth structure that can arise on a horizon that is smooth at late time. The classification includes creases, corners and caustic points. We prove that creases and corners form spacelike submanifolds of d... |
2104.06013 | Yotam Sherf | Ram Brustein, Yotam Sherf | Classical Love for Quantum Blackholes | Replaced to agree with the published PRD version | null | 10.1103/PhysRevD.105.024044 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a method for comparing the classical and quantum calculations of
the electric quadrupolar Love number $k_2$ and show that our previous
derivation of the quantum Love number of a quantum blackhole matches exactly
the classical calculation of $k_2$ when quantum expectation values are replaced
by the correspo... | [
{
"created": "Tue, 13 Apr 2021 08:25:39 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Jan 2022 17:43:26 GMT",
"version": "v2"
}
] | 2022-01-20 | [
[
"Brustein",
"Ram",
""
],
[
"Sherf",
"Yotam",
""
]
] | We present a method for comparing the classical and quantum calculations of the electric quadrupolar Love number $k_2$ and show that our previous derivation of the quantum Love number of a quantum blackhole matches exactly the classical calculation of $k_2$ when quantum expectation values are replaced by the correspond... |
1912.12626 | Vladimir Khatsymovsky | V.M. Khatsymovsky | On the discrete version of the black hole solution | 24 pages, typos corrected, readability improved | Int. Journ. Mod. Phys. A, Vol. 35, Nos. 11 & 12, 2050058 (2020) | 10.1142/S0217751X2050058X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Schwarzschild type solution in Regge calculus is considered. Earlier, we
considered a mechanism of loose fixing of edge lengths due to the functional
integral measure arising from integration over connection in the functional
integral for the connection representation of the Regge action. The length
scale depends o... | [
{
"created": "Sun, 29 Dec 2019 10:59:06 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Aug 2020 14:42:50 GMT",
"version": "v2"
}
] | 2020-09-01 | [
[
"Khatsymovsky",
"V. M.",
""
]
] | A Schwarzschild type solution in Regge calculus is considered. Earlier, we considered a mechanism of loose fixing of edge lengths due to the functional integral measure arising from integration over connection in the functional integral for the connection representation of the Regge action. The length scale depends on ... |
gr-qc/9802063 | Jorge Pullin | Reinaldo Gleiser, Oscar Nicasio, Richard Price and Jorge Pullin | The collision of boosted black holes: second order close limit
calculations | 20 pages, RevTeX, 6 figures included with psfig | Phys.Rev. D59 (1999) 044024 | 10.1103/PhysRevD.59.044024 | CGPG-98/2-1 | gr-qc | null | We study the head-on collision of black holes starting from unsymmetrized,
Brill--Lindquist type data for black holes with non-vanishing initial linear
momentum. Evolution of the initial data is carried out with the ``close limit
approximation,'' in which small initial separation and momentum are assumed,
and second-... | [
{
"created": "Thu, 26 Feb 1998 03:14:49 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Gleiser",
"Reinaldo",
""
],
[
"Nicasio",
"Oscar",
""
],
[
"Price",
"Richard",
""
],
[
"Pullin",
"Jorge",
""
]
] | We study the head-on collision of black holes starting from unsymmetrized, Brill--Lindquist type data for black holes with non-vanishing initial linear momentum. Evolution of the initial data is carried out with the ``close limit approximation,'' in which small initial separation and momentum are assumed, and second-or... |
2112.04196 | Saeed Noori Gashti | S. Noori Gashti, J. Sadeghi | Inflation, Swampland, and Landscape | 15 pages, 3 figures, Accepted for publication in the International
Journal of Modern Physics A (IJMPA) | International Journal of Modern Physics A 37 (04), 2250006 (2022) | 10.1142/S0217751X22500063 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we evaluate a new refined de Sitter (dS) conjecture
perspective. This conjecture provides interesting conditions in studying
various inflationary models. Therefore we challenge refined dS conjecture with
a general method for analyzing the potentials with the inflectional point near
the top (V''= 0). We... | [
{
"created": "Wed, 8 Dec 2021 09:49:38 GMT",
"version": "v1"
}
] | 2023-02-14 | [
[
"Gashti",
"S. Noori",
""
],
[
"Sadeghi",
"J.",
""
]
] | In this paper, we evaluate a new refined de Sitter (dS) conjecture perspective. This conjecture provides interesting conditions in studying various inflationary models. Therefore we challenge refined dS conjecture with a general method for analyzing the potentials with the inflectional point near the top (V''= 0). We f... |
1308.4704 | Richard O'Shaughnessy | R. O'Shaughnessy (1), B. Farr (2), E. Ochsner (1), Hee-Suk Cho (3), C.
Kim (4), Chang-Hwan Lee (3) ((1) University of Wisconsin-Milwaukee, (2)
Northwestern University, (3) Department of Physics, Pusan National
University, Korea, (4) Department of Physics, West Virginia University) | Parameter Estimation of Gravitational Waves from Nonprecessing BH-NS
Inspirals with higher harmonics: Comparing MCMC posteriors to an Effective
Fisher Matrix | v2: Corrected figures, plus improvements in response to referee | Phys. Rev. D 89, 064048 (2014) | 10.1103/PhysRevD.89.064048 | LIGO DCC P1300110 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the \texttt{lalinference} Markov-chain Monte Carlo parameter estimation
code, we examine two distinct nonprecessing black hole-neutron star (BH-NS)
binaries with and without higher-order harmonics. Our simulations suggest that
higher harmonics provide a minimal amount of additional information,
principally abou... | [
{
"created": "Wed, 21 Aug 2013 20:29:42 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Feb 2014 18:04:10 GMT",
"version": "v2"
}
] | 2014-03-26 | [
[
"O'Shaughnessy",
"R.",
""
],
[
"Farr",
"B.",
""
],
[
"Ochsner",
"E.",
""
],
[
"Cho",
"Hee-Suk",
""
],
[
"Kim",
"C.",
""
],
[
"Lee",
"Chang-Hwan",
""
]
] | Using the \texttt{lalinference} Markov-chain Monte Carlo parameter estimation code, we examine two distinct nonprecessing black hole-neutron star (BH-NS) binaries with and without higher-order harmonics. Our simulations suggest that higher harmonics provide a minimal amount of additional information, principally about ... |
1608.00113 | Tiberiu Harko | Min-Xing Xu, Tiberiu Harko, Shi-Dong Liang | Quantum Cosmology of $f(R,T)$ gravity | 20 pages, no figures, accepted for publication in EPJC | The European Physical Journal C, 76(8), 1-19 (2016) | 10.1140/epjc/s10052-016-4303-6 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modified gravity theories have the potential of explaining the recent
acceleration of the Universe without resorting to the mysterious concept of
dark energy. In particular, it has been pointed out that matter-geometry
coupling may be responsible for the recent cosmological dynamics of the
Universe, and matter itself... | [
{
"created": "Sat, 30 Jul 2016 12:42:14 GMT",
"version": "v1"
}
] | 2016-08-17 | [
[
"Xu",
"Min-Xing",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Liang",
"Shi-Dong",
""
]
] | Modified gravity theories have the potential of explaining the recent acceleration of the Universe without resorting to the mysterious concept of dark energy. In particular, it has been pointed out that matter-geometry coupling may be responsible for the recent cosmological dynamics of the Universe, and matter itself m... |
gr-qc/0108060 | Hajime Sotani | Hajime Sotani, Kazuhiro Tominaga, and Kei-ichi Maeda | Density Discontinuity of a Neutron Star and Gravitational Waves | REVTeX,18 pages, 8 figures | Phys.Rev. D65 (2002) 024010 | 10.1103/PhysRevD.65.024010 | WU-AP/135/01 | gr-qc | null | We calculate quasi-normal f- and g-modes of a neutron star with density
discontinuity, which may appear in a phase transition at extreme high density.
We find that discontinuity will reflect largely on the f-mode, and that the
g-mode could also be important for a less massive star.
| [
{
"created": "Fri, 24 Aug 2001 11:51:07 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Sotani",
"Hajime",
""
],
[
"Tominaga",
"Kazuhiro",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | We calculate quasi-normal f- and g-modes of a neutron star with density discontinuity, which may appear in a phase transition at extreme high density. We find that discontinuity will reflect largely on the f-mode, and that the g-mode could also be important for a less massive star. |
gr-qc/0210076 | null | Sergei M. Kopeikin (University of Missouri-Columbia, USA) | Retardation of Gravity in Binary Pulsars | 4 pages, no figures, to appear in the proceedings of the "Radio
Pulsars" meeting, Crete, Greece, August 26-29, 2002; eds. M. Bailes, D. Nice
and S. Thorsett | Radio Pulsars. Eds. M. Bailes, D. Nice and S. Thorsett. ASP
Conference Series, Vol. 302 (Sheridan Books 2003) pp. 111 - 114 | null | null | gr-qc astro-ph | null | We study the effect of retardation of gravity in binary pulsars. It appears
in pulsar timing formula as a periodic excess time delay to the Shapiro effect.
The retardation of gravity effect can be large enough for observation in binary
pulsars with the nearly edgewise orbits and relatively large ratio of the
projecte... | [
{
"created": "Wed, 23 Oct 2002 00:01:57 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kopeikin",
"Sergei M.",
"",
"University of Missouri-Columbia, USA"
]
] | We study the effect of retardation of gravity in binary pulsars. It appears in pulsar timing formula as a periodic excess time delay to the Shapiro effect. The retardation of gravity effect can be large enough for observation in binary pulsars with the nearly edgewise orbits and relatively large ratio of the projected ... |
2004.06525 | Dipanjan Dey | Ashok B. Joshi, Dipanjan Dey, Pankaj S. Joshi, Parth Bambhaniya | Shadow of a Naked Singularity without Photon Sphere | 9 pages, 12 figures | Phys. Rev. D 102, 024022 (2020) | 10.1103/PhysRevD.102.024022 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | It is generally believed that the shadows of either a black hole or naked
singularity arise due to photon spheres developing in these spacetimes. Here we
propose a new spherically symmetric naked singularity spacetime solution of
Einstein equations which has no photon sphere, and we show that the singularity
casts a ... | [
{
"created": "Tue, 14 Apr 2020 14:06:51 GMT",
"version": "v1"
}
] | 2020-07-15 | [
[
"Joshi",
"Ashok B.",
""
],
[
"Dey",
"Dipanjan",
""
],
[
"Joshi",
"Pankaj S.",
""
],
[
"Bambhaniya",
"Parth",
""
]
] | It is generally believed that the shadows of either a black hole or naked singularity arise due to photon spheres developing in these spacetimes. Here we propose a new spherically symmetric naked singularity spacetime solution of Einstein equations which has no photon sphere, and we show that the singularity casts a sh... |
1108.4256 | Grigory Vereshkov | Grigory Vereshkov and Leonid Marochnik | Quantum gravity in Heisenberg representation and self-consistent theory
of gravitons in macroscopic spacetime | 15 pages; v2: Expanded explanation of the reasons why the vast
majority of papers on the quantum theory of gravitons published in 1977-2008
is erroneous | J. Mod. Phys. 4, 285-297 (2013) | 10.4236/jmp.2013.42039 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The first mathematically consistent exact equations of quantum gravity in the
Heisenberg representation and Hamilton gauge are obtained. It is shown that the
path integral over the canonical variables in the Hamilton gauge is
mathematically equivalent to the operator equations of quantum theory of
gravity with canoni... | [
{
"created": "Mon, 22 Aug 2011 08:24:40 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Mar 2013 09:53:46 GMT",
"version": "v2"
}
] | 2013-03-06 | [
[
"Vereshkov",
"Grigory",
""
],
[
"Marochnik",
"Leonid",
""
]
] | The first mathematically consistent exact equations of quantum gravity in the Heisenberg representation and Hamilton gauge are obtained. It is shown that the path integral over the canonical variables in the Hamilton gauge is mathematically equivalent to the operator equations of quantum theory of gravity with canonica... |
1005.4530 | Richard Woodard | L.H. Ford (Tufts University), S.P. Miao (CECS), Kin-Wang Ng (Academia
Sinica), R.P. Woodard (U. of Florida) and Chun-Hsien Wu (Academia Sinica) | Quantum Stress Tensor Fluctuations of a Conformal Field and Inflationary
Cosmology | 31 pages, 1 figure, uses LaTeX2epsilon | Phys.Rev.D82:043501,2010 | 10.1103/PhysRevD.82.043501 | CECS-PHY-10/6, UFIFT-QG-10-02 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the additional perturbation introduced during inflation by quantum
stress tensor fluctuations of a conformally invariant field such as the photon.
We consider both a kinematical model, which deals only with the expansion
fluctuations of geodesics, and a dynamical model which treats the coupling of
the stre... | [
{
"created": "Tue, 25 May 2010 10:56:00 GMT",
"version": "v1"
}
] | 2011-08-15 | [
[
"Ford",
"L. H.",
"",
"Tufts University"
],
[
"Miao",
"S. P.",
"",
"CECS"
],
[
"Ng",
"Kin-Wang",
"",
"Academia\n Sinica"
],
[
"Woodard",
"R. P.",
"",
"U. of Florida"
],
[
"Wu",
"Chun-Hsien",
"",
"Academia Sinica"
]
] | We discuss the additional perturbation introduced during inflation by quantum stress tensor fluctuations of a conformally invariant field such as the photon. We consider both a kinematical model, which deals only with the expansion fluctuations of geodesics, and a dynamical model which treats the coupling of the stress... |
1503.03436 | Katy Clough Ms | Katy Clough, Pau Figueras, Hal Finkel, Markus Kunesch, Eugene A. Lim,
Saran Tunyasuvunakool | GRChombo : Numerical Relativity with Adaptive Mesh Refinement | 48 pages, 24 figures | Class.Quant.Grav. 32 (2015) 24, 245011 | 10.1088/0264-9381/32/24/245011 | KCL-PH-TH/2015-40 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we introduce GRChombo: a new numerical relativity code which
incorporates full adaptive mesh refinement (AMR) using block structured
Berger-Rigoutsos grid generation. The code supports non-trivial
"many-boxes-in-many-boxes" mesh hierarchies and massive parallelism through the
Message Passing Interface (... | [
{
"created": "Wed, 11 Mar 2015 18:20:21 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Sep 2015 18:20:40 GMT",
"version": "v2"
},
{
"created": "Mon, 8 Feb 2016 16:07:30 GMT",
"version": "v3"
}
] | 2016-02-09 | [
[
"Clough",
"Katy",
""
],
[
"Figueras",
"Pau",
""
],
[
"Finkel",
"Hal",
""
],
[
"Kunesch",
"Markus",
""
],
[
"Lim",
"Eugene A.",
""
],
[
"Tunyasuvunakool",
"Saran",
""
]
] | In this work, we introduce GRChombo: a new numerical relativity code which incorporates full adaptive mesh refinement (AMR) using block structured Berger-Rigoutsos grid generation. The code supports non-trivial "many-boxes-in-many-boxes" mesh hierarchies and massive parallelism through the Message Passing Interface (MP... |
2304.02035 | James Alvey | Uddipta Bhardwaj, James Alvey, Benjamin Kurt Miller, Samaya Nissanke,
Christoph Weniger | Peregrine: Sequential simulation-based inference for gravitational wave
signals | 14 pages, 5 figures. Code: peregrine available at
https://github.com/peregrine-gw/peregrine. Matches published version | null | null | null | gr-qc astro-ph.CO astro-ph.HE astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | The current and upcoming generations of gravitational wave experiments
represent an exciting step forward in terms of detector sensitivity and
performance. For example, key upgrades at the LIGO, Virgo and KAGRA facilities
will see the next observing run (O4) probe a spatial volume around four times
larger than the pr... | [
{
"created": "Tue, 4 Apr 2023 18:00:01 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Jul 2024 07:21:09 GMT",
"version": "v2"
}
] | 2024-07-03 | [
[
"Bhardwaj",
"Uddipta",
""
],
[
"Alvey",
"James",
""
],
[
"Miller",
"Benjamin Kurt",
""
],
[
"Nissanke",
"Samaya",
""
],
[
"Weniger",
"Christoph",
""
]
] | The current and upcoming generations of gravitational wave experiments represent an exciting step forward in terms of detector sensitivity and performance. For example, key upgrades at the LIGO, Virgo and KAGRA facilities will see the next observing run (O4) probe a spatial volume around four times larger than the prev... |
1305.3757 | Bin Chen | Bin Chen and Jia-ju Zhang | Thermodynamics in Black-hole/CFT Correspondence | 8 pages. Essay awarded honourable mention in the Gravity Research
Foundation 2013 Awards for Essays on Gravitation | Int. J. Mod. Phys. D22 (2013) 1342012 | 10.1142/S0218271813420121 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The area law of Bekenstein-Hawking entropy of the black hole suggests that
the black hole should have a lower-dimensional holographic description. It has
been found recently that a large class of rotating and charged black holes
could be holographically described a two-dimensional (2D) conformal field
theory (CFT). W... | [
{
"created": "Thu, 16 May 2013 10:59:14 GMT",
"version": "v1"
}
] | 2015-04-29 | [
[
"Chen",
"Bin",
""
],
[
"Zhang",
"Jia-ju",
""
]
] | The area law of Bekenstein-Hawking entropy of the black hole suggests that the black hole should have a lower-dimensional holographic description. It has been found recently that a large class of rotating and charged black holes could be holographically described a two-dimensional (2D) conformal field theory (CFT). We ... |
1210.6127 | Wei Chieh Liang | Wei Chieh Liang and Si Chen Lee | Vorticity, Gyroscopic precession, and Spin-Curvature Force | null | Phys. Rev. D 87, 044024 (2013) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In investigating the relation between vorticity and gyroscopic precession, we
calculate the vorticity vector in Godel, Kerr, Lewis, Schwarzschild, Minkowski
metric and find out the vorticity vector of the specific observers is the
angular velocity of gyroscopic precession. Furthermore, considering space-time
torsion ... | [
{
"created": "Tue, 23 Oct 2012 04:56:31 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Feb 2013 08:12:40 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Feb 2013 07:39:58 GMT",
"version": "v3"
},
{
"created": "Mon, 11 Feb 2013 18:12:16 GMT",
"version": "v4"
}
] | 2013-02-12 | [
[
"Liang",
"Wei Chieh",
""
],
[
"Lee",
"Si Chen",
""
]
] | In investigating the relation between vorticity and gyroscopic precession, we calculate the vorticity vector in Godel, Kerr, Lewis, Schwarzschild, Minkowski metric and find out the vorticity vector of the specific observers is the angular velocity of gyroscopic precession. Furthermore, considering space-time torsion wi... |
0906.3547 | R Loll | T.G. Budd, R. Loll | In Search of Fundamental Discreteness in 2+1 Dimensional Quantum Gravity | 29 pages, 18 figures | Class.Quant.Grav.26:185011,2009 | 10.1088/0264-9381/26/18/185011 | ITP-UU-09/24 | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspired by previous work in 2+1 dimensional quantum gravity, which found
evidence for a discretization of time in the quantum theory, we reexamine the
issue for the case of pure Lorentzian gravity with vanishing cosmological
constant and spatially compact universes of genus larger than 1. Taking as our
starting poin... | [
{
"created": "Thu, 18 Jun 2009 23:13:54 GMT",
"version": "v1"
}
] | 2009-09-28 | [
[
"Budd",
"T. G.",
""
],
[
"Loll",
"R.",
""
]
] | Inspired by previous work in 2+1 dimensional quantum gravity, which found evidence for a discretization of time in the quantum theory, we reexamine the issue for the case of pure Lorentzian gravity with vanishing cosmological constant and spatially compact universes of genus larger than 1. Taking as our starting point ... |
1610.05260 | Breno Giacchini | Antonio Accioly, Breno L. Giacchini, Ilya L. Shapiro | Low-energy effects in a higher-derivative gravity model with real and
complex massive poles | 43 pages. Matches the version published in PRD | Phys. Rev. D 96, 104004 (2017) | 10.1103/PhysRevD.96.104004 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The most simple superrenormalizable model of quantum gravity is based on the
general local covariant six-derivative action. In addition to graviton such a
theory has massive scalar and tensor modes. It was shown recently that in the
case when the massive poles emerge in complex conjugate pairs, the theory has
also un... | [
{
"created": "Mon, 17 Oct 2016 18:48:09 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Nov 2016 04:10:23 GMT",
"version": "v2"
},
{
"created": "Mon, 31 Jul 2017 04:29:40 GMT",
"version": "v3"
},
{
"created": "Thu, 9 Nov 2017 17:41:26 GMT",
"version": "v4"
}
] | 2017-11-10 | [
[
"Accioly",
"Antonio",
""
],
[
"Giacchini",
"Breno L.",
""
],
[
"Shapiro",
"Ilya L.",
""
]
] | The most simple superrenormalizable model of quantum gravity is based on the general local covariant six-derivative action. In addition to graviton such a theory has massive scalar and tensor modes. It was shown recently that in the case when the massive poles emerge in complex conjugate pairs, the theory has also unit... |
gr-qc/0505106 | Lorenzo Iorio | Lorenzo Iorio | The impact of the new Earth gravity model EIGEN-CG03C on the measurement
of the Lense-Thirring effect with some existing Earth satellites | LaTex2e, 7 pages, 16 references, 1 table. It is an update of the
impact of the even zonal harmonics of the geopotential on the Lense-Thirring
effect with the EIGEN-GGM03C Earth gravity model publicly released on May 11
2005. Typos corrected. Reference added. To appear in General Relativity and
Gravitation, Marc... | Gen.Rel.Grav. 38 (2006) 523-527 | 10.1007/s10714-006-0239-8 | null | gr-qc astro-ph physics.geo-ph | null | The impact of the latest combined CHAMP/GRACE/terrestrial measurements Earth
gravity model EIGEN-CG03C on the measurement of the Lense-Thirring effect with
some linear combinations of the nodes of some of the existing Earth's
artificial satellites is presented. The 1-sigma upper bound of the systematic
error in the n... | [
{
"created": "Fri, 20 May 2005 10:27:54 GMT",
"version": "v1"
},
{
"created": "Wed, 25 May 2005 14:11:04 GMT",
"version": "v2"
},
{
"created": "Sun, 2 Oct 2005 10:17:25 GMT",
"version": "v3"
}
] | 2016-08-31 | [
[
"Iorio",
"Lorenzo",
""
]
] | The impact of the latest combined CHAMP/GRACE/terrestrial measurements Earth gravity model EIGEN-CG03C on the measurement of the Lense-Thirring effect with some linear combinations of the nodes of some of the existing Earth's artificial satellites is presented. The 1-sigma upper bound of the systematic error in the nod... |
1005.1809 | Julien Larena | Jean-Philippe Uzan, George F.R. Ellis and Julien Larena | A two-mass expanding exact space-time solution | 15 pages, 5 figures. Replaced to match the published version | Gen.Rel.Grav.43:191-205,2011 | 10.1007/s10714-010-1081-6 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In order to understand how locally static configurations around
gravitationally bound bodies can be embedded in an expanding universe, we
investigate the solutions of general relativity describing a space-time whose
spatial sections have the topology of a 3-sphere with two identical masses at
the poles. We show that ... | [
{
"created": "Tue, 11 May 2010 11:58:01 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Feb 2011 09:38:13 GMT",
"version": "v2"
}
] | 2015-03-17 | [
[
"Uzan",
"Jean-Philippe",
""
],
[
"Ellis",
"George F. R.",
""
],
[
"Larena",
"Julien",
""
]
] | In order to understand how locally static configurations around gravitationally bound bodies can be embedded in an expanding universe, we investigate the solutions of general relativity describing a space-time whose spatial sections have the topology of a 3-sphere with two identical masses at the poles. We show that Is... |
1805.01265 | Norman G\"urlebeck | Norman G\"urlebeck, Lisa W\"orner, Thilo Schuldt, Klaus D\"oringshoff,
Konstantin Gaul, Domenico Gerardi, Arne Grenzebach, Nandan Jha, Evgeny
Kovalchuk, Andreas Resch, Thijs Wendrich, Robert Berger, Sven Herrmann,
Ulrich Johann, Markus Krutzik, Achim Peters, Ernst M. Rasel and Claus
Braxmaier | BOOST -- A Satellite Mission to Test Lorentz Invariance Using
High-Performance Optical Frequency References | 11 pages, 2 figures, accepted for publication in Phys. Rev. D | null | 10.1103/PhysRevD.97.124051 | null | gr-qc physics.ins-det physics.optics physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | BOOST (BOOst Symmetry Test) is a proposed satellite mission to search for
violations of Lorentz invariance by comparing two optical frequency references.
One is based on a long-term stable optical resonator and the other on a
hyperfine transition in molecular iodine. This mission will allow to determine
several param... | [
{
"created": "Thu, 3 May 2018 12:49:23 GMT",
"version": "v1"
}
] | 2018-08-01 | [
[
"Gürlebeck",
"Norman",
""
],
[
"Wörner",
"Lisa",
""
],
[
"Schuldt",
"Thilo",
""
],
[
"Döringshoff",
"Klaus",
""
],
[
"Gaul",
"Konstantin",
""
],
[
"Gerardi",
"Domenico",
""
],
[
"Grenzebach",
"Arne",
""
]... | BOOST (BOOst Symmetry Test) is a proposed satellite mission to search for violations of Lorentz invariance by comparing two optical frequency references. One is based on a long-term stable optical resonator and the other on a hyperfine transition in molecular iodine. This mission will allow to determine several paramet... |
1807.09818 | Syed Moeez Hassan | Syed Moeez Hassan, Viqar Husain and Babar Qureshi | Gravity, time and varying constants | 7 pages | null | null | MIT-CTP/5037 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There are theories which implement the idea that the constants of nature may
be "time dependent." These introduce new fields representing "evolving
constants," in addition to physical fields. We argue that dynamical matter
coupling constants can arise naturally in non-perturbative matter-gravity
theories, after a cho... | [
{
"created": "Wed, 25 Jul 2018 18:42:16 GMT",
"version": "v1"
}
] | 2018-07-27 | [
[
"Hassan",
"Syed Moeez",
""
],
[
"Husain",
"Viqar",
""
],
[
"Qureshi",
"Babar",
""
]
] | There are theories which implement the idea that the constants of nature may be "time dependent." These introduce new fields representing "evolving constants," in addition to physical fields. We argue that dynamical matter coupling constants can arise naturally in non-perturbative matter-gravity theories, after a choic... |
2408.04938 | Robbert Scholtens | Robbert W. Scholtens, Marcello Seri, Holger Waalkens, Rien van de
Weygaert | Cosmic Anisotropy and Bianchi Characterization: Killing vector fields
and the implied finding of their metric frame | null | null | null | null | gr-qc astro-ph.CO math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | On the largest scales the universe appears to be almost perfectly homogeneous
and isotropic, adhering to the cosmological principle. On smaller scales
inhomogeneities and anisotropies become increasingly prominent, reflecting the
origin, emergence and formation of structure in the Universe and its
cosmological impact... | [
{
"created": "Fri, 9 Aug 2024 08:37:36 GMT",
"version": "v1"
}
] | 2024-08-12 | [
[
"Scholtens",
"Robbert W.",
""
],
[
"Seri",
"Marcello",
""
],
[
"Waalkens",
"Holger",
""
],
[
"van de Weygaert",
"Rien",
""
]
] | On the largest scales the universe appears to be almost perfectly homogeneous and isotropic, adhering to the cosmological principle. On smaller scales inhomogeneities and anisotropies become increasingly prominent, reflecting the origin, emergence and formation of structure in the Universe and its cosmological impact. ... |
1601.01384 | Stephen Green | Pablo Bosch, Stephen R. Green, Luis Lehner | Nonlinear Evolution and Final Fate of Charged Anti-de Sitter Black Hole
Superradiant Instability | 8 pages, 4 figures; V2: minor updates, added a reference; V3: updates
to match version accepted for publication in Physical Review Letters | Phys. Rev. Lett. 116, 141102 (2016) | 10.1103/PhysRevLett.116.141102 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe the full nonlinear development of the superradiant instability
for a charged massless scalar field, coupled to general relativity and
electromagnetism, in the vicinity of a Reissner-Nordstrom-AdS black hole. The
presence of the negative cosmological constant provides a natural context for
considering perf... | [
{
"created": "Thu, 7 Jan 2016 03:20:12 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jan 2016 20:23:02 GMT",
"version": "v2"
},
{
"created": "Wed, 30 Mar 2016 20:09:48 GMT",
"version": "v3"
}
] | 2016-04-13 | [
[
"Bosch",
"Pablo",
""
],
[
"Green",
"Stephen R.",
""
],
[
"Lehner",
"Luis",
""
]
] | We describe the full nonlinear development of the superradiant instability for a charged massless scalar field, coupled to general relativity and electromagnetism, in the vicinity of a Reissner-Nordstrom-AdS black hole. The presence of the negative cosmological constant provides a natural context for considering perfec... |
1511.06897 | Brihaye Yves | Y. Brihaye, L. Ducobu | Black Holes with Scalar Hairs in Einstein-Gauss-Bonnet Gravity | 16 pages, 9 figures | null | 10.1142/S021827181650084X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Einstein-Gauss-Bonnet gravity in five dimensions is extended by scalar
fields and the corresponding equations are reduced to a system of non-linear
differential equations. A large family of regular solutions of these equations
is shown to exist. Generically, these solutions are spinning black holes with
scalar ha... | [
{
"created": "Sat, 21 Nov 2015 16:43:49 GMT",
"version": "v1"
}
] | 2016-06-15 | [
[
"Brihaye",
"Y.",
""
],
[
"Ducobu",
"L.",
""
]
] | The Einstein-Gauss-Bonnet gravity in five dimensions is extended by scalar fields and the corresponding equations are reduced to a system of non-linear differential equations. A large family of regular solutions of these equations is shown to exist. Generically, these solutions are spinning black holes with scalar hair... |
0906.1928 | Brihaye Yves | Yves Brihaye (Universite de Mons, Belgium) | Black holes, black strings and cosmological constant | 31 pages including 24 figures; Extended version of a contribution to
the 418th WE-Heraeus Seminar, Bremen, 25-29 August 2008 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a review of black holes and black string solutions available in
the $d$-dimensional Einstein and Einstein-Maxwell model in the presence of a
cosmological constant. Due to the cosmological constant, the equations do not
admit explicit solutions for generic values of the parameters and numerical
methods are ... | [
{
"created": "Wed, 10 Jun 2009 13:05:42 GMT",
"version": "v1"
}
] | 2009-06-11 | [
[
"Brihaye",
"Yves",
"",
"Universite de Mons, Belgium"
]
] | We present a review of black holes and black string solutions available in the $d$-dimensional Einstein and Einstein-Maxwell model in the presence of a cosmological constant. Due to the cosmological constant, the equations do not admit explicit solutions for generic values of the parameters and numerical methods are ne... |
1612.07567 | Juan Carlos Degollado | Claudia Moreno, Juan Carlos Degollado and Dario Nunez | Gravitational and electromagnetic signatures of accretion into a charged
black hole | 17 pages, 9 figures | null | 10.1007/s10714-017-2244-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the derivation and the solutions to the coupled electromagnetic
and gravitational perturbations with sources in a charged black hole
background. We work in the so called ghost gauge and consider as source of the
perturbations the infall of radial currents. In this way, we study a system in
which it is prov... | [
{
"created": "Thu, 22 Dec 2016 12:20:05 GMT",
"version": "v1"
}
] | 2017-06-21 | [
[
"Moreno",
"Claudia",
""
],
[
"Degollado",
"Juan Carlos",
""
],
[
"Nunez",
"Dario",
""
]
] | We present the derivation and the solutions to the coupled electromagnetic and gravitational perturbations with sources in a charged black hole background. We work in the so called ghost gauge and consider as source of the perturbations the infall of radial currents. In this way, we study a system in which it is provok... |
gr-qc/9604017 | Int. Lab. HTSC and Sse | Sergiu I. Vacaru | Nearly Autoparallel Maps, Tensor Integral and Conservation Laws in
Locally Anisotrpoic Spaces | 38 pages, Revtex | Extension of a paper in "Romanian J. Phys" 39 (1994) 37-52 | null | null | gr-qc dg-ga math.DG | null | We formulate the theory of nearly autoparallel maps (generalizing conformal
transforms) of locally anisotropic spaces and define the nearly autoparallel
integration as the inverse operation to both covariant derivation and
deformation of connections by nearly autoparallel maps. By using this geometric
formalism we co... | [
{
"created": "Mon, 8 Apr 1996 08:29:23 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Vacaru",
"Sergiu I.",
""
]
] | We formulate the theory of nearly autoparallel maps (generalizing conformal transforms) of locally anisotropic spaces and define the nearly autoparallel integration as the inverse operation to both covariant derivation and deformation of connections by nearly autoparallel maps. By using this geometric formalism we cons... |
2103.13599 | Yunqi Liu | Cheng-Yong Zhang, Peng Liu, Yunqi Liu, Chao Niu, Bin Wang | Dynamical charged black hole spontaneous scalarization in Anti-de Sitter
spacetimes | null | null | 10.1103/PhysRevD.104.084089 | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We study the fully nonlinear dynamics of black hole spontaneous
scalarizations in Einstein-Maxwell scalar theory with coupling function
$f(\phi)=e^{-b\phi^{2}}$, which can transform usual Reissner-Nordstr\"om
Anti-de Sitter (RN-AdS) black holes into hairy black holes. Fixing the
Arnowitt-Deser-Misner mass of the syst... | [
{
"created": "Thu, 25 Mar 2021 04:12:04 GMT",
"version": "v1"
}
] | 2021-11-10 | [
[
"Zhang",
"Cheng-Yong",
""
],
[
"Liu",
"Peng",
""
],
[
"Liu",
"Yunqi",
""
],
[
"Niu",
"Chao",
""
],
[
"Wang",
"Bin",
""
]
] | We study the fully nonlinear dynamics of black hole spontaneous scalarizations in Einstein-Maxwell scalar theory with coupling function $f(\phi)=e^{-b\phi^{2}}$, which can transform usual Reissner-Nordstr\"om Anti-de Sitter (RN-AdS) black holes into hairy black holes. Fixing the Arnowitt-Deser-Misner mass of the system... |
1603.01286 | Kenta Hotokezaka | Kenta Hotokezaka, Koutarou Kyutoku, Yu-ichiro Sekiguchi, Masaru
Shibata | Measurability of the tidal deformability by gravitational waves from
coalescing binary neutron stars | 18 pages, 9 figures, accepted for publication in PRD | null | 10.1103/PhysRevD.93.064082 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Combining new gravitational waveforms derived by long-term (14--16 orbits)
numerical-relativity simulations with waveforms by an effective-one-body (EOB)
formalism for coalescing binary neutron stars, we construct hybrid waveforms
and estimate the measurability for the dimensionless tidal deformability of the
neutron... | [
{
"created": "Thu, 3 Mar 2016 21:26:03 GMT",
"version": "v1"
}
] | 2016-04-20 | [
[
"Hotokezaka",
"Kenta",
""
],
[
"Kyutoku",
"Koutarou",
""
],
[
"Sekiguchi",
"Yu-ichiro",
""
],
[
"Shibata",
"Masaru",
""
]
] | Combining new gravitational waveforms derived by long-term (14--16 orbits) numerical-relativity simulations with waveforms by an effective-one-body (EOB) formalism for coalescing binary neutron stars, we construct hybrid waveforms and estimate the measurability for the dimensionless tidal deformability of the neutron s... |
2001.06261 | Xiang-Hua Zhai | Hai-Feng Ding and Xiang-Hua Zhai | Entropies and The First Laws of Black Hole Thermodynamics in
Einstein-aether-Maxwell Theory | 23 pages, version appeared in Class. Quantum Grav | Class. Quantum Grav. 37 (2020) 185015 | 10.1088/1361-6382/aba31d | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the solution phase space method, we investigate the thermodynamics of
black holes in Einstein-aether-Maxwell theory, for which the traditional Wald
method (covariant phase space method) fails. We show the first laws of
thermodynamics and definitive entropy expressions at both Killing and universal
horizons for ... | [
{
"created": "Fri, 17 Jan 2020 12:30:40 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Aug 2020 13:57:57 GMT",
"version": "v2"
}
] | 2020-08-25 | [
[
"Ding",
"Hai-Feng",
""
],
[
"Zhai",
"Xiang-Hua",
""
]
] | Using the solution phase space method, we investigate the thermodynamics of black holes in Einstein-aether-Maxwell theory, for which the traditional Wald method (covariant phase space method) fails. We show the first laws of thermodynamics and definitive entropy expressions at both Killing and universal horizons for so... |
gr-qc/9703018 | Chris Chambers | Chris M. Chambers, William A. Hiscock and Brett Taylor (Montana State
University) | Spinning Down a Black Hole With Scalar Fields | 4 pages (including 3 postscript figures), Revtex, uses epsf.tex,
twocolumn.sty and header.sty (included). Submitted to Physical Review Letters | Phys.Rev.Lett. 78 (1997) 3249-3251 | 10.1103/PhysRevLett.78.3249 | MSUPHY97.06 | gr-qc | null | We study the evolution of a Kerr black hole emitting scalar radiation via the
Hawking process. We show that the rate at which mass and angular momentum are
lost by the black hole leads to a final evolutionary state with nonzero angular
momentum, namely $a/M \approx 0.555$.
| [
{
"created": "Thu, 6 Mar 1997 22:49:12 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Chambers",
"Chris M.",
"",
"Montana State\n University"
],
[
"Hiscock",
"William A.",
"",
"Montana State\n University"
],
[
"Taylor",
"Brett",
"",
"Montana State\n University"
]
] | We study the evolution of a Kerr black hole emitting scalar radiation via the Hawking process. We show that the rate at which mass and angular momentum are lost by the black hole leads to a final evolutionary state with nonzero angular momentum, namely $a/M \approx 0.555$. |
1611.10313 | Alan Kostelecky | Alan Kostelecky, Matthew Mewes | Testing local Lorentz invariance with short-range gravity | 7 pages | Phys.Lett.B766: 137-143, 2017 | 10.1016/j.physletb.2016.12.062 | IUHET 622, November 2016 | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Newton limit of gravity is studied in the presence of Lorentz-violating
gravitational operators of arbitrary mass dimension. The linearized modified
Einstein equations are obtained and the perturbative solutions are constructed
and characterized. We develop a formalism for data analysis in laboratory
experiments ... | [
{
"created": "Wed, 30 Nov 2016 19:05:56 GMT",
"version": "v1"
}
] | 2017-01-17 | [
[
"Kostelecky",
"Alan",
""
],
[
"Mewes",
"Matthew",
""
]
] | The Newton limit of gravity is studied in the presence of Lorentz-violating gravitational operators of arbitrary mass dimension. The linearized modified Einstein equations are obtained and the perturbative solutions are constructed and characterized. We develop a formalism for data analysis in laboratory experiments te... |
gr-qc/0110061 | V. Kurbanova | A. B. Balakin, V. Kurbanova (Kazan State University) | Relativistic Dynamics of Vector Bosons in the Field of Gravitational
Radiation | 10 pages, no figures, Tex | Found.Phys. 31 (2001) 1039-1049 | null | null | gr-qc | null | We consider a model of the state evolution of relativistic vector bosons,
which includes both the dynamical equations for the particle four-velocity and
the equations for the polarization four-vector evolution in the field of a
nonlinear plane gravitational wave. In addition to the gravitational minimal
coupling, tid... | [
{
"created": "Fri, 12 Oct 2001 08:02:34 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Oct 2001 06:40:54 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Balakin",
"A. B.",
"",
"Kazan State University"
],
[
"Kurbanova",
"V.",
"",
"Kazan State University"
]
] | We consider a model of the state evolution of relativistic vector bosons, which includes both the dynamical equations for the particle four-velocity and the equations for the polarization four-vector evolution in the field of a nonlinear plane gravitational wave. In addition to the gravitational minimal coupling, tidal... |
gr-qc/9806061 | Robert V. Gentry | Robert V. Gentry and David W. Gentry | The Genuine Cosmic Rosetta | 9 pages LaTeX, no figures | null | null | null | gr-qc astro-ph | null | Reexamination of general relativistic experimental results shows the universe
is governed by Einstein's static-spacetime general relativity instead of
Friedmann-Lemaitre expanding-spacetime general relativity. The absence of
expansion redshifts in a static-spacetime universe suggests a reevaluation of
the present cos... | [
{
"created": "Sun, 14 Jun 1998 23:00:45 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gentry",
"Robert V.",
""
],
[
"Gentry",
"David W.",
""
]
] | Reexamination of general relativistic experimental results shows the universe is governed by Einstein's static-spacetime general relativity instead of Friedmann-Lemaitre expanding-spacetime general relativity. The absence of expansion redshifts in a static-spacetime universe suggests a reevaluation of the present cosmo... |
0911.0604 | Eyo Ita III | Eyo Eyo Ita III | CDJ formulation from the instanton representation of Plebanski gravity | 4 pages. Submitting for proceedings for the 10th International
Conference on Gravitation, Astrophysics and Cosmology, Vietnam | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that a certain action which gives rise to the pure spin connection
formulation of gravity by CDJ can be consistently derived from the action for
the instanton representation of Plebanski gravity. This is an illustrative
example of when certain symmetries of the basic fields commute with the
symmetries of the ... | [
{
"created": "Tue, 3 Nov 2009 20:59:13 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Nov 2009 18:15:02 GMT",
"version": "v2"
},
{
"created": "Fri, 7 May 2010 19:54:13 GMT",
"version": "v3"
},
{
"created": "Wed, 29 Dec 2010 23:36:14 GMT",
"version": "v4"
},
{
"cre... | 2012-02-28 | [
[
"Ita",
"Eyo Eyo",
"III"
]
] | We show that a certain action which gives rise to the pure spin connection formulation of gravity by CDJ can be consistently derived from the action for the instanton representation of Plebanski gravity. This is an illustrative example of when certain symmetries of the basic fields commute with the symmetries of the eq... |
1806.01941 | Antonio Enea Romano | Antonio Enea Romano, Sergio A. Vallejo Pena | The MESS of cosmological perturbations | We study the MESS of cosmological perturbations, version accepted in
Physics Letters B | null | 10.1016/j.physletb.2018.08.016 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce two new effective quantities for the study of comoving curvature
perturbations $\zeta$: the space dependent effective sound speed (SESS) and the
momentum dependent effective sound speed (MESS) . We use the SESS and the MESS
to derive a new set of equations which can be applied to any system described
by ... | [
{
"created": "Tue, 5 Jun 2018 21:38:58 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Aug 2018 18:11:51 GMT",
"version": "v2"
}
] | 2018-08-28 | [
[
"Romano",
"Antonio Enea",
""
],
[
"Pena",
"Sergio A. Vallejo",
""
]
] | We introduce two new effective quantities for the study of comoving curvature perturbations $\zeta$: the space dependent effective sound speed (SESS) and the momentum dependent effective sound speed (MESS) . We use the SESS and the MESS to derive a new set of equations which can be applied to any system described by an... |
1811.10917 | Nezihe Uzun | Nezihe Uzun | Reduced phase space optics for general relativity: Symplectic ray bundle
transfer | 39 pages, 2 figures | Classical and Quantum Gravity, Volume 37, Number 4, Page 045002,
(2020) | 10.1088/1361-6382/ab60b5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the paraxial regime of Newtonian optics, propagation of an ensemble of
rays is represented by a symplectic ABCD transfer matrix defined on a reduced
phase space. Here, we present its analogue for general relativity. Starting
from simultaneously applied null geodesic actions for two curves, we obtain a
geodesic dev... | [
{
"created": "Tue, 27 Nov 2018 11:25:42 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Jan 2020 17:35:27 GMT",
"version": "v2"
}
] | 2020-01-28 | [
[
"Uzun",
"Nezihe",
""
]
] | In the paraxial regime of Newtonian optics, propagation of an ensemble of rays is represented by a symplectic ABCD transfer matrix defined on a reduced phase space. Here, we present its analogue for general relativity. Starting from simultaneously applied null geodesic actions for two curves, we obtain a geodesic devia... |
1810.02159 | Ra\'ul Carballo-Rubio | Stephon Alexander and Ra\'ul Carballo-Rubio | Topological Features of the Quantum Vacuum | 7 double-column pages + references, no figures | Phys. Rev. D 101, 024058 (2020) | 10.1103/PhysRevD.101.024058 | null | gr-qc hep-ex hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A central aspect of the cosmological constant problem is to understand why
vacuum energy does not gravitate. In order to account for this observation,
while allowing for nontrivial dynamics of the quantum vacuum, we motivate a
novel background independent theory of gravity. The theory is an extension of
unimodular gr... | [
{
"created": "Thu, 4 Oct 2018 11:56:36 GMT",
"version": "v1"
}
] | 2020-02-05 | [
[
"Alexander",
"Stephon",
""
],
[
"Carballo-Rubio",
"Raúl",
""
]
] | A central aspect of the cosmological constant problem is to understand why vacuum energy does not gravitate. In order to account for this observation, while allowing for nontrivial dynamics of the quantum vacuum, we motivate a novel background independent theory of gravity. The theory is an extension of unimodular grav... |
gr-qc/0011079 | Vanessa Carvalho De Andrade | V. C. de Andrade, L. C. T. Guillen and J. G. Pereira | Teleparallel Gravity and the Gravitational Energy-Momentum Density | 6 pages. Contribuition to IX Marcel Grossmann Meeting, Rome 2000 | null | null | null | gr-qc | null | In the context of the teleparallel equivalent of general relativity, we show
that the energy-momentum density for the gravitational field can be described
by a true spacetime tensor. It is also invariant under local (gauge)
translations of the tangent space coordinates, but transforms covariantly only
under global Lo... | [
{
"created": "Wed, 22 Nov 2000 13:51:50 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"de Andrade",
"V. C.",
""
],
[
"Guillen",
"L. C. T.",
""
],
[
"Pereira",
"J. G.",
""
]
] | In the context of the teleparallel equivalent of general relativity, we show that the energy-momentum density for the gravitational field can be described by a true spacetime tensor. It is also invariant under local (gauge) translations of the tangent space coordinates, but transforms covariantly only under global Lore... |
1206.3903 | Carlo Rovelli | Marios Christodoulou, Aldo Riello, Carlo Rovelli | How to detect an anti-spacetime | Article awarded with an "Honorable Mention" from the 2012 Gravity
Foundation Award. 6 pages, 8 (pretty) figures | null | 10.1142/S021827181242014X | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Is it possible, in principle, to measure the sign of the Lapse? We show that
fermion dynamics distinguishes spacetimes having the same metric but different
tetrads, for instance a Lapse with opposite sign. This sign might be a physical
quantity not captured by the metric. We discuss its possible role in quantum
gravi... | [
{
"created": "Mon, 18 Jun 2012 12:22:58 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Christodoulou",
"Marios",
""
],
[
"Riello",
"Aldo",
""
],
[
"Rovelli",
"Carlo",
""
]
] | Is it possible, in principle, to measure the sign of the Lapse? We show that fermion dynamics distinguishes spacetimes having the same metric but different tetrads, for instance a Lapse with opposite sign. This sign might be a physical quantity not captured by the metric. We discuss its possible role in quantum gravity... |
2004.07120 | Mihai Marciu C | Mihai Marciu | Dynamical aspects for scalar fields coupled to cubic contractions of the
Riemann tensor | null | Phys. Rev. D 102, 023517 (2020) | 10.1103/PhysRevD.102.023517 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper studies a new type of dark energy, a scalar field with positive or
negative kinetic energy, generically coupled to a term which is composed by
specific contractions of the Riemann tensor. After presenting the resulting
field equations, we have analyzed the physical characteristics of the
corresponding model... | [
{
"created": "Wed, 15 Apr 2020 14:39:00 GMT",
"version": "v1"
}
] | 2020-07-15 | [
[
"Marciu",
"Mihai",
""
]
] | The paper studies a new type of dark energy, a scalar field with positive or negative kinetic energy, generically coupled to a term which is composed by specific contractions of the Riemann tensor. After presenting the resulting field equations, we have analyzed the physical characteristics of the corresponding model b... |
1503.05151 | Massimiliano Rinaldi | Guido Cognola, Massimiliano Rinaldi, Luciano Vanzo, and Sergio Zerbini | Thermodynamics of topological black holes in $R^{2}$ gravity | Accepted for publication in Physical Review D | Phys. Rev. D 91, 104004 (2015) | 10.1103/PhysRevD.91.104004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study topological black hole solutions of the simplest quadratic gravity
action and we find that two classes are allowed. The first is asymptotically
flat and mimics the Reissner-Nordstr\"om solution, while the second is
asymptotically de Sitter or anti-de Sitter. In both classes, the geometry of
the horizon can b... | [
{
"created": "Tue, 17 Mar 2015 18:23:48 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Mar 2015 14:50:00 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Apr 2015 16:20:11 GMT",
"version": "v3"
}
] | 2015-05-13 | [
[
"Cognola",
"Guido",
""
],
[
"Rinaldi",
"Massimiliano",
""
],
[
"Vanzo",
"Luciano",
""
],
[
"Zerbini",
"Sergio",
""
]
] | We study topological black hole solutions of the simplest quadratic gravity action and we find that two classes are allowed. The first is asymptotically flat and mimics the Reissner-Nordstr\"om solution, while the second is asymptotically de Sitter or anti-de Sitter. In both classes, the geometry of the horizon can be ... |
gr-qc/9712094 | Stanislav Alexeyev | S.O.Alexeyev and M.V.Sazhin (Sternberg Astronomical Institute, Moscow
State University) | Some Aspects of Four Dimensional Black Hole Solutions in Gauss-Bonnet
Extended String Gravity | 17 pages, 7 Postscript figures, uses mprocl.sty and epsf.sty. Talk
given at the "Discussion Meeting on Physics of Black Holes", Bangalore,
India, December 8-10, 1997 | null | null | null | gr-qc | null | An internal singularity of a string four-dimensional black hole with second
order curvature corrections is discussed. A restriction to a minimal size of a
neutral black hole is obtained in the frame of the model considered. Vacuum
polarization of the surrounding space-time caused by this minimal-size black
hole is al... | [
{
"created": "Wed, 24 Dec 1997 19:53:47 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Alexeyev",
"S. O.",
"",
"Sternberg Astronomical Institute, Moscow\n State University"
],
[
"Sazhin",
"M. V.",
"",
"Sternberg Astronomical Institute, Moscow\n State University"
]
] | An internal singularity of a string four-dimensional black hole with second order curvature corrections is discussed. A restriction to a minimal size of a neutral black hole is obtained in the frame of the model considered. Vacuum polarization of the surrounding space-time caused by this minimal-size black hole is also... |
2406.10692 | Sudip Mishra | Soumya Chakraborty, Sudip Mishra and Subenoy Chakraborty | Dynamical system analysis of quintessence dark energy model | null | null | 10.1142/S0219887824502505 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Our work deals with the dynamical system analysis of quintessence dark energy
scalar field model with exponential potential. A dynamical system analysis has
been applied at the background level. Using suitable transformation of
variables, the evolution equations are reduced to an autonomous system for
exponential for... | [
{
"created": "Sat, 15 Jun 2024 17:10:38 GMT",
"version": "v1"
}
] | 2024-06-18 | [
[
"Chakraborty",
"Soumya",
""
],
[
"Mishra",
"Sudip",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | Our work deals with the dynamical system analysis of quintessence dark energy scalar field model with exponential potential. A dynamical system analysis has been applied at the background level. Using suitable transformation of variables, the evolution equations are reduced to an autonomous system for exponential form ... |
1912.07609 | Leo Stein | Leo C. Stein, Niels Warburton | The location of the last stable orbit in Kerr spacetime | 11+4 pages, 6 figures, 1 ancillary Mathematica file. v2: Minor edits,
matched version published in PRD. Code available at https://bhptoolkit.org/ | Phys. Rev. D 101, 064007 (2020) | 10.1103/PhysRevD.101.064007 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole spacetimes, like the Kerr spacetime, admit both stable and
plunging orbits, separated in parameter space by the separatrix. Determining
the location of the separatrix is of fundamental interest in understanding
black holes, and is of crucial importance for modeling extreme mass-ratio
inspirals. Previous nu... | [
{
"created": "Mon, 16 Dec 2019 19:00:00 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Mar 2020 23:13:43 GMT",
"version": "v2"
}
] | 2020-03-09 | [
[
"Stein",
"Leo C.",
""
],
[
"Warburton",
"Niels",
""
]
] | Black hole spacetimes, like the Kerr spacetime, admit both stable and plunging orbits, separated in parameter space by the separatrix. Determining the location of the separatrix is of fundamental interest in understanding black holes, and is of crucial importance for modeling extreme mass-ratio inspirals. Previous nume... |
1807.01725 | Lavinia Heisenberg | Lavinia Heisenberg | A systematic approach to generalisations of General Relativity and their
cosmological implications | 193 pages, Review under press at Physics Reports | null | 10.1016/j.physrep.2018.11.006 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A century ago, Einstein formulated his elegant and elaborate theory of
General Relativity, which has so far withstood a multitude of empirical tests
with remarkable success. Notwithstanding the triumphs of Einstein's theory, the
tenacious challenges of modern cosmology and of particle physics have motivated
the explo... | [
{
"created": "Wed, 4 Jul 2018 18:03:25 GMT",
"version": "v1"
}
] | 2019-05-01 | [
[
"Heisenberg",
"Lavinia",
""
]
] | A century ago, Einstein formulated his elegant and elaborate theory of General Relativity, which has so far withstood a multitude of empirical tests with remarkable success. Notwithstanding the triumphs of Einstein's theory, the tenacious challenges of modern cosmology and of particle physics have motivated the explora... |
0905.2421 | Mariam Bouhmadi-Lopez | Mariam Bouhmadi-Lopez, Claus Kiefer, Barbara Sandhoefer, Paulo Vargas
Moniz | On the quantum fate of singularities in a dark-energy dominated universe | 20 pages, 6 figures, RevTeX 4. References added. Version to appear in
PRD | Phys.Rev.D79:124035,2009 | 10.1103/PhysRevD.79.124035 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Classical models for dark energy can exhibit a variety of singularities, many
of which occur for scale factors much bigger than the Planck length. We address
here the issue whether some of these singularities, the big freeze and the big
demarrage, can be avoided in quantum cosmology. We use the framework of quantum
g... | [
{
"created": "Thu, 14 May 2009 20:35:43 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Jun 2009 20:10:21 GMT",
"version": "v2"
}
] | 2009-07-09 | [
[
"Bouhmadi-Lopez",
"Mariam",
""
],
[
"Kiefer",
"Claus",
""
],
[
"Sandhoefer",
"Barbara",
""
],
[
"Moniz",
"Paulo Vargas",
""
]
] | Classical models for dark energy can exhibit a variety of singularities, many of which occur for scale factors much bigger than the Planck length. We address here the issue whether some of these singularities, the big freeze and the big demarrage, can be avoided in quantum cosmology. We use the framework of quantum geo... |
1708.08868 | Marina Martinez | Roberto Emparan, Marina Martinez, Miguel Zilhao | Black hole fusion in the extreme mass ratio limit | 36 pages, 18 figures | Phys. Rev. D 97, 044004 (2018) | 10.1103/PhysRevD.97.044004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a simple, general, and accurate construction of the event horizons
for the fusion of two neutral, rotating black holes with arbitrary orientation
and values of their spins, in the extreme mass ratio limit where one black hole
is much larger than the other. We compute several parameters that characterize
th... | [
{
"created": "Tue, 29 Aug 2017 16:38:36 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Feb 2018 17:12:07 GMT",
"version": "v2"
}
] | 2018-02-07 | [
[
"Emparan",
"Roberto",
""
],
[
"Martinez",
"Marina",
""
],
[
"Zilhao",
"Miguel",
""
]
] | We present a simple, general, and accurate construction of the event horizons for the fusion of two neutral, rotating black holes with arbitrary orientation and values of their spins, in the extreme mass ratio limit where one black hole is much larger than the other. We compute several parameters that characterize the ... |
0806.2507 | Supratik Pal Dr | Sudipta Mukherji, Supratik Pal | Bouncing Braneworld with Born-Infeld and Gauss-Bonnet | 13 pages, 4 figures. Minor revisions. To appear in Mod.Phys.Lett.A | Mod.Phys.Lett.A25:35-45,2010 | 10.1142/S0217732310031397 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show the existence of some bouncing cosmological solutions in the
braneworld scenario. More specifically, we consider a dynamical three-brane in
the background of Born-Infeld and electrically charged Gauss-Bonnet black hole.
We find that, in certain range of parameter space, the brane universe, at least
classicall... | [
{
"created": "Mon, 16 Jun 2008 06:52:54 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Jun 2009 06:19:46 GMT",
"version": "v2"
}
] | 2010-02-02 | [
[
"Mukherji",
"Sudipta",
""
],
[
"Pal",
"Supratik",
""
]
] | We show the existence of some bouncing cosmological solutions in the braneworld scenario. More specifically, we consider a dynamical three-brane in the background of Born-Infeld and electrically charged Gauss-Bonnet black hole. We find that, in certain range of parameter space, the brane universe, at least classically,... |
gr-qc/9802059 | Pablo Laguna | Nils Andersson, Pablo Laguna and Philippos Papadopoulos | Dynamics of scalar fields in the background of rotating black holes II:
A note on superradiance | 5 pages, 3 Postscript figures, Submitted Phys. Rev. D | Phys.Rev.D58:087503,1998 | 10.1103/PhysRevD.58.087503 | CGPG 98/2-3 | gr-qc | null | We analyze the amplification due to so-called superradiance from the
scattering of pulses off rotating black holes as a numerical time evolution
problem. We consider the "worst possible case" of scalar field pulses for which
superradiance effects yield amplifications $< 1%$. We show that this small
effect can be isol... | [
{
"created": "Mon, 23 Feb 1998 17:31:15 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Andersson",
"Nils",
""
],
[
"Laguna",
"Pablo",
""
],
[
"Papadopoulos",
"Philippos",
""
]
] | We analyze the amplification due to so-called superradiance from the scattering of pulses off rotating black holes as a numerical time evolution problem. We consider the "worst possible case" of scalar field pulses for which superradiance effects yield amplifications $< 1%$. We show that this small effect can be isolat... |
1602.06400 | Christian Klein | S. Bai, G. Izquierdo, and C. Klein | Numerical study of the Kerr solution in rotating coordinates | null | Phys. Rev. D 93, 124001 (2016) | 10.1103/PhysRevD.93.124001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Kerr solution in coordinates corotating with the horizon is studied as a
testbed for a spacetime with a helical Killing vector in the Ernst picture. The
solution is numerically constructed by solving the Ernst equation with a
spectral method and a Newton iteration. We discuss convergence of the iteration
for seve... | [
{
"created": "Sat, 20 Feb 2016 12:42:16 GMT",
"version": "v1"
}
] | 2016-06-08 | [
[
"Bai",
"S.",
""
],
[
"Izquierdo",
"G.",
""
],
[
"Klein",
"C.",
""
]
] | The Kerr solution in coordinates corotating with the horizon is studied as a testbed for a spacetime with a helical Killing vector in the Ernst picture. The solution is numerically constructed by solving the Ernst equation with a spectral method and a Newton iteration. We discuss convergence of the iteration for severa... |
2402.08240 | Tao Zhu | Bo-Yang Zhang, Tao Zhu, Jing-Fei Zhang, and Xin Zhang | Forecasts for Constraining Lorentz-violating Damping of Gravitational
Waves from Compact Binary Inspirals | 14 pages; v2: to appear in PRD | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Violation of Lorentz symmetry can result in two distinct effects in the
propagation of the gravitational waves (GWs). One is a modified dispersion
relation and another is a frequency-dependent damping of GWs. While the former
has been extensively studied in the literature, in this paper we concentrate on
the frequenc... | [
{
"created": "Tue, 13 Feb 2024 06:09:48 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Apr 2024 06:35:10 GMT",
"version": "v2"
}
] | 2024-04-11 | [
[
"Zhang",
"Bo-Yang",
""
],
[
"Zhu",
"Tao",
""
],
[
"Zhang",
"Jing-Fei",
""
],
[
"Zhang",
"Xin",
""
]
] | Violation of Lorentz symmetry can result in two distinct effects in the propagation of the gravitational waves (GWs). One is a modified dispersion relation and another is a frequency-dependent damping of GWs. While the former has been extensively studied in the literature, in this paper we concentrate on the frequency-... |
2404.09795 | Predrag Jovanovic | Predrag Jovanovi\'c, Vesna Borka Jovanovi\'c, Du\v{s}ko Borka,
Alexander F. Zakharov | Constraints on graviton mass from Schwarzschild precession in the orbits
of S-stars around the Galactic Center | 16 pages, 4 tables, 3 figures. Accepted for publication in Symmetry | null | null | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we use a modification of the Newtonian gravitational potential
with a non-linear Yukawa-like correction, as it was proposed by C. Will earlier
to obtain new bounds on graviton mass from the observed orbits of S-stars
around the Galactic Center (GC). This phenomenological potential differs from
the gravi... | [
{
"created": "Mon, 15 Apr 2024 13:52:20 GMT",
"version": "v1"
}
] | 2024-04-16 | [
[
"Jovanović",
"Predrag",
""
],
[
"Jovanović",
"Vesna Borka",
""
],
[
"Borka",
"Duško",
""
],
[
"Zakharov",
"Alexander F.",
""
]
] | In this paper we use a modification of the Newtonian gravitational potential with a non-linear Yukawa-like correction, as it was proposed by C. Will earlier to obtain new bounds on graviton mass from the observed orbits of S-stars around the Galactic Center (GC). This phenomenological potential differs from the gravita... |
1905.10380 | Andrew R. Liddle | Stephon Alexander, Marina Cort\^es, Andrew R. Liddle, Jo\~ao Magueijo,
Robert Sims, and Lee Smolin | A Zero-Parameter Extension of General Relativity with Varying
Cosmological Constant | Companion paper to arXiv:1905.10382. Minor updates to match published
version | Phys. Rev. D 100, 083506 (2019) | 10.1103/PhysRevD.100.083506 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a new extension of general relativity (GR) which has the
remarkable property of being more constrained than GR plus a cosmological
constant, having one less free parameter. This is implemented by allowing the
cosmological constant to have a consistent space-time variation, through coding
its dynamics in th... | [
{
"created": "Fri, 24 May 2019 18:00:04 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Jul 2019 14:24:36 GMT",
"version": "v2"
},
{
"created": "Fri, 4 Oct 2019 16:17:32 GMT",
"version": "v3"
}
] | 2019-10-09 | [
[
"Alexander",
"Stephon",
""
],
[
"Cortês",
"Marina",
""
],
[
"Liddle",
"Andrew R.",
""
],
[
"Magueijo",
"João",
""
],
[
"Sims",
"Robert",
""
],
[
"Smolin",
"Lee",
""
]
] | We provide a new extension of general relativity (GR) which has the remarkable property of being more constrained than GR plus a cosmological constant, having one less free parameter. This is implemented by allowing the cosmological constant to have a consistent space-time variation, through coding its dynamics in the ... |
2102.08948 | Sarbari Guha Dr. | Sarbari Guha and Uttaran Ghosh | Dynamical conditions and causal transport of dissipative spherical
collapse in $f(R,T)$ gravity | 22 pages, accepted for publication in EPJP | European Physical Journal Plus, 2021 | 10.1140/epjp/s13360-021-01446-4 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we have investigated the non-adiabatic spherical gravitational
collapse in the framework of the $f(R,T)$ theory of gravity with a locally
anisotropic fluid that undergoes dissipation in the form of heat flux,
free-streaming radiation, and shearing viscosity. The dynamical equations are
analyzed in deta... | [
{
"created": "Tue, 16 Feb 2021 19:45:57 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Apr 2021 18:49:51 GMT",
"version": "v2"
}
] | 2021-06-08 | [
[
"Guha",
"Sarbari",
""
],
[
"Ghosh",
"Uttaran",
""
]
] | In this paper, we have investigated the non-adiabatic spherical gravitational collapse in the framework of the $f(R,T)$ theory of gravity with a locally anisotropic fluid that undergoes dissipation in the form of heat flux, free-streaming radiation, and shearing viscosity. The dynamical equations are analyzed in detail... |
2207.11856 | Marcell Howard | Stephon Alexander, Tatsuya Daniel, Marcell Howard, Morgane Konig | An Exact Fermionic Chern-Simons-Kodama State in Quantum Gravity | null | Phys. Rev. D 106, 10612 (2022) | 10.1103/PhysRevD.106.106012 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Chern-Simons-Kodama (CSK) state is an exact, non-perturbative wave
function in the Ashtekar formulation of classical General Relativity. In this
work, we find a generalized fermionic CSK state by solving the extended
gravitational and fermionic Hamiltonian constraints of the Wheeler-DeWitt
equation exactly. We sh... | [
{
"created": "Mon, 25 Jul 2022 00:36:35 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Aug 2022 17:24:04 GMT",
"version": "v2"
}
] | 2022-11-21 | [
[
"Alexander",
"Stephon",
""
],
[
"Daniel",
"Tatsuya",
""
],
[
"Howard",
"Marcell",
""
],
[
"Konig",
"Morgane",
""
]
] | The Chern-Simons-Kodama (CSK) state is an exact, non-perturbative wave function in the Ashtekar formulation of classical General Relativity. In this work, we find a generalized fermionic CSK state by solving the extended gravitational and fermionic Hamiltonian constraints of the Wheeler-DeWitt equation exactly. We show... |
1503.08891 | Morgan Lynch | Morgan H. Lynch | Accelerated Quantum Dynamics | 24 pages, 7 figures. Accepted for publication in Phys. Rev. D | Phys. Rev. D 92, 024019 (2015) | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we establish a formalism for the computation of observables due
to acceleration-induced particle physics processes. General expressions for the
transition rate, multiplicity, power, spectra, and displacement law of
particles undergoing time-dependent acceleration and transitioning into a final
state of ... | [
{
"created": "Tue, 31 Mar 2015 02:42:27 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Jun 2015 14:39:07 GMT",
"version": "v2"
},
{
"created": "Tue, 14 Jul 2015 21:21:51 GMT",
"version": "v3"
}
] | 2015-07-16 | [
[
"Lynch",
"Morgan H.",
""
]
] | In this paper we establish a formalism for the computation of observables due to acceleration-induced particle physics processes. General expressions for the transition rate, multiplicity, power, spectra, and displacement law of particles undergoing time-dependent acceleration and transitioning into a final state of ar... |
1105.6249 | Rainer Verch | Rainer Verch | Local covariance, renormalization ambiguity, and local thermal
equilibrium in cosmology | 28 p, 2 figures. To appear in the proceedings of the conference
"Quantum Field Theory and Gravity" (Regensburg, Germany, Sep 28 - Oct 1,
2010), F. Finster et al. (eds.) (Birkhaeuser, Basel, 2011). v2: References
updated and layout snags removed | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article reviews some aspects of local covariance and of the ambiguities
and anomalies involved in the definition of the stress energy tensor of quantum
field theory in curved spacetime. Then, a summary is given of the approach
proposed by Buchholz et al. to define local thermal equilibrium states in
quantum fiel... | [
{
"created": "Tue, 31 May 2011 12:02:17 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Jun 2011 17:17:00 GMT",
"version": "v2"
}
] | 2011-06-07 | [
[
"Verch",
"Rainer",
""
]
] | This article reviews some aspects of local covariance and of the ambiguities and anomalies involved in the definition of the stress energy tensor of quantum field theory in curved spacetime. Then, a summary is given of the approach proposed by Buchholz et al. to define local thermal equilibrium states in quantum field ... |
1703.04748 | Marc Geiller | Marc Geiller | Edge modes and corner ambiguities in 3d Chern-Simons theory and gravity | Published version | Nucl. Phys. B924C (2017) 312-365 | 10.1016/j.nuclphysb.2017.09.010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Boundaries in gauge field theories are known to be the locus of a wealth of
interesting phenomena, as illustrated for example by the holographic principle
or by the AdS/CFT and bulk-boundary correspondences. In particular, it has been
acknowledged for quite some time that boundaries can break gauge invariance,
and th... | [
{
"created": "Tue, 14 Mar 2017 22:09:48 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Apr 2017 21:04:27 GMT",
"version": "v2"
},
{
"created": "Tue, 2 May 2017 20:57:43 GMT",
"version": "v3"
},
{
"created": "Sun, 28 May 2017 17:25:56 GMT",
"version": "v4"
},
{
"cr... | 2017-09-28 | [
[
"Geiller",
"Marc",
""
]
] | Boundaries in gauge field theories are known to be the locus of a wealth of interesting phenomena, as illustrated for example by the holographic principle or by the AdS/CFT and bulk-boundary correspondences. In particular, it has been acknowledged for quite some time that boundaries can break gauge invariance, and ther... |
1311.2489 | Henriette Elvang | Henriette Elvang and Gary T. Horowitz | Quantum gravity via supersymmetry and holography | 58 pages, 8 figures. v2: Minor revisions and clarifications.
References added. v3. References added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the approach to quantum gravity based on supersymmetry, strings,
and holography. This includes a survey of black holes in higher-dimensions,
supersymmetry and supergravity, as well as string theory, black hole
microstates, and the gauge/gravity duality. This presentation will appear as a
chapter in "General... | [
{
"created": "Mon, 11 Nov 2013 16:40:03 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Mar 2014 17:11:45 GMT",
"version": "v2"
},
{
"created": "Wed, 28 May 2014 15:30:15 GMT",
"version": "v3"
}
] | 2014-05-29 | [
[
"Elvang",
"Henriette",
""
],
[
"Horowitz",
"Gary T.",
""
]
] | We review the approach to quantum gravity based on supersymmetry, strings, and holography. This includes a survey of black holes in higher-dimensions, supersymmetry and supergravity, as well as string theory, black hole microstates, and the gauge/gravity duality. This presentation will appear as a chapter in "General R... |
1409.3546 | Guillaume Faye | Guillaume Faye, Luc Blanchet, Bala R. Iyer | Non-linear multipole interactions and gravitational-wave octupole modes
for inspiralling compact binaries to third-and-a-half post-Newtonian order | 37 pages, no figure; minor corrections | Class. Quantum Grav. 32 (2015) 045016 | 10.1088/0264-9381/32/4/045016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is motivated by the need to improve the post-Newtonian (PN)
amplitude accuracy of waveforms for gravitational waves generated by
inspiralling compact binaries, both for use in data analysis and in the
comparison between post-Newtonian approximations and numerical relativity
computations. It presents: (i) t... | [
{
"created": "Thu, 11 Sep 2014 19:13:25 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Feb 2015 20:41:39 GMT",
"version": "v2"
}
] | 2015-06-22 | [
[
"Faye",
"Guillaume",
""
],
[
"Blanchet",
"Luc",
""
],
[
"Iyer",
"Bala R.",
""
]
] | This paper is motivated by the need to improve the post-Newtonian (PN) amplitude accuracy of waveforms for gravitational waves generated by inspiralling compact binaries, both for use in data analysis and in the comparison between post-Newtonian approximations and numerical relativity computations. It presents: (i) the... |
1708.09430 | Benito A. Ju\'arez-Aubry | Benito A. Ju\'arez-Aubry | Asymptotics in the time-dependent Hawking and Unruh effects | Thesis submitted to the University of Nottingham for the Degree of
Doctor of Philosophy. Thesis supervisor: Dr. Jorma Louko. 230 pages. 20
figures | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this thesis, we study the Hawking and Unruh effects in time-dependent
situations, as registered by localised spacetimes observers in several
asymptotic situations.
(Full abstract inside document.)
| [
{
"created": "Wed, 30 Aug 2017 19:05:25 GMT",
"version": "v1"
}
] | 2017-09-01 | [
[
"Juárez-Aubry",
"Benito A.",
""
]
] | In this thesis, we study the Hawking and Unruh effects in time-dependent situations, as registered by localised spacetimes observers in several asymptotic situations. (Full abstract inside document.) |
2311.17130 | John W. Moffat | John W. Moffat | Wide Binaries and Modified Gravity (MOG) | 7 pages, no figures. arXiv admin note: text overlap with
arXiv:2006.12550 typos and text changes | Journal of Cosmology and Astroparticle Physics, JCAP05(2024)079 | null | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Wide binary stars are used to test the modified gravity called
Scalar-Tensor-Vector Gravity or MOG. This theory is based on the additional
gravitational degrees of freedom, the scalar field $G=G_N(1+\alpha)$, where
$G_N$ is Newton's constant, and the massive (spin-1 graviton) vector field
$\phi_\mu$. The wide binarie... | [
{
"created": "Tue, 28 Nov 2023 17:20:36 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Apr 2024 20:15:24 GMT",
"version": "v2"
},
{
"created": "Wed, 29 May 2024 21:47:05 GMT",
"version": "v3"
}
] | 2024-05-31 | [
[
"Moffat",
"John W.",
""
]
] | Wide binary stars are used to test the modified gravity called Scalar-Tensor-Vector Gravity or MOG. This theory is based on the additional gravitational degrees of freedom, the scalar field $G=G_N(1+\alpha)$, where $G_N$ is Newton's constant, and the massive (spin-1 graviton) vector field $\phi_\mu$. The wide binaries ... |
1307.0662 | Jong-Ping Hsu | Leonardo Hsu, Jong-Ping Hsu | Exact Rotational Space-time Transformations, Davies-Jennison Experiments
and Limiting Lorentz-Poincar\'e Invariance | 23 pages, to be published in Euro. Phys. J. Plus, vol. 128 (2013) | Eur. Phys. J. Plus (2013) 128:74 | 10.1140/epjp/i2013-13074-4 | null | gr-qc math-ph math.MP physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Jennison deduced from the rotational experiments that a rotating radius $r_r$
measured by the rotating observer is contracted by $r_r = r(1-\om^2
r^2/c^2)^{1/2}$, compared with the radius $r$ measured in an inertial frame.
This conclusion differs from the result based on Lorentz transformations. Since
rotational fram... | [
{
"created": "Tue, 2 Jul 2013 10:17:27 GMT",
"version": "v1"
}
] | 2014-02-26 | [
[
"Hsu",
"Leonardo",
""
],
[
"Hsu",
"Jong-Ping",
""
]
] | Jennison deduced from the rotational experiments that a rotating radius $r_r$ measured by the rotating observer is contracted by $r_r = r(1-\om^2 r^2/c^2)^{1/2}$, compared with the radius $r$ measured in an inertial frame. This conclusion differs from the result based on Lorentz transformations. Since rotational frames... |
1206.6012 | Ranjan Sharma | R. Sharma and R. Tikekar | Non-adiabatic radiative collapse of a relativistic star under different
initial conditions | To appear in Pramana- j. of physics | Pramana -j. of physics, Vol. 79, p. 501, 2012 | 10.1007/s12043-012-0323-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the role of space-time geometry in the non-adiabatic collapse of a
star dissipating energy in the form of radial heat flow, studying its evolution
under different initial conditions. The collapse of a star with interior
comprising of a homogeneous perfect fluid is compared with that of a star
filled with i... | [
{
"created": "Mon, 25 Jun 2012 10:28:43 GMT",
"version": "v1"
}
] | 2013-04-30 | [
[
"Sharma",
"R.",
""
],
[
"Tikekar",
"R.",
""
]
] | We examine the role of space-time geometry in the non-adiabatic collapse of a star dissipating energy in the form of radial heat flow, studying its evolution under different initial conditions. The collapse of a star with interior comprising of a homogeneous perfect fluid is compared with that of a star filled with inh... |
gr-qc/9612026 | Robert Mann | S.F.J. Chan and R.B. Mann | Scalar Wave Falloff in Asymptotically Anti-de Sitter Backgrounds | 34 pages, Latex, 26 figures, uses psfig | Phys. Rev. D 55, 7546 (1997) | 10.1103/PhysRevD.55.7546 | WATPHYS TH-96/20 | gr-qc | null | Conformally invariant scalar waves in black hole spacetimes which are
asymptotically anti-de Sitter are investigated. We consider both the
$(2+1)$-dimensional black hole and $(3+1)$-dimensional Schwarzschild-anti-de
Sitter spacetime as backgrounds. Analytical and numerical methods show that the
waves decay exponentia... | [
{
"created": "Wed, 11 Dec 1996 16:26:22 GMT",
"version": "v1"
}
] | 2016-08-24 | [
[
"Chan",
"S. F. J.",
""
],
[
"Mann",
"R. B.",
""
]
] | Conformally invariant scalar waves in black hole spacetimes which are asymptotically anti-de Sitter are investigated. We consider both the $(2+1)$-dimensional black hole and $(3+1)$-dimensional Schwarzschild-anti-de Sitter spacetime as backgrounds. Analytical and numerical methods show that the waves decay exponentiall... |
gr-qc/9503003 | Jean-Guy Demers | J.- G. Demers, R. Lafrance and R.C. Myers | Black Hole Entropy without Brick Walls | 15 pages, plain LaTex minor additions including some references;
version accepted for publication | Phys.Rev.D52:2245-2253,1995 | 10.1103/PhysRevD.52.2245 | McGill 95-06 | gr-qc hep-th | null | We present evidence which confirms a suggestion by Susskind and Uglum
regarding black hole entropy. Using a Pauli-Villars regulator, we find that 't
Hooft's approach to evaluating black hole entropy through a
statistical-mechanical counting of states for a scalar field propagating
outside the event horizon yields pre... | [
{
"created": "Wed, 1 Mar 1995 20:14:12 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Mar 1995 20:25:18 GMT",
"version": "v2"
},
{
"created": "Wed, 21 Jun 1995 01:52:13 GMT",
"version": "v3"
}
] | 2014-11-17 | [
[
"Demers",
"J. - G.",
""
],
[
"Lafrance",
"R.",
""
],
[
"Myers",
"R. C.",
""
]
] | We present evidence which confirms a suggestion by Susskind and Uglum regarding black hole entropy. Using a Pauli-Villars regulator, we find that 't Hooft's approach to evaluating black hole entropy through a statistical-mechanical counting of states for a scalar field propagating outside the event horizon yields preci... |
1410.4446 | Behnaz Fazlpour | Behnaz Fazlpour, Ali Banijamali | Non-minimally Coupled Tachyon Field in Teleparallel Gravity | 15 pages, 6 figures | null | 10.1088/1475-7516/2015/04/030 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a full investigation on dynamics of a new dark energy model in
which the four-derivative of a non-canonical scalar field (tachyon) is
non-minimally coupled to the vector torsion. Our analysis is done in the
framework of teleparallel equivalent of general relativity which is based on
torsion instead of curv... | [
{
"created": "Thu, 16 Oct 2014 14:27:04 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Feb 2015 21:44:56 GMT",
"version": "v2"
},
{
"created": "Tue, 17 Mar 2015 19:45:44 GMT",
"version": "v3"
}
] | 2015-06-23 | [
[
"Fazlpour",
"Behnaz",
""
],
[
"Banijamali",
"Ali",
""
]
] | We perform a full investigation on dynamics of a new dark energy model in which the four-derivative of a non-canonical scalar field (tachyon) is non-minimally coupled to the vector torsion. Our analysis is done in the framework of teleparallel equivalent of general relativity which is based on torsion instead of curvat... |
2205.07642 | Celio Muniz | Marcony S. Cunha, G. Alencar, Celio R. Muniz, Valdir B. Bezerra, and
Hor\'acio S. Vieira | Black strings from dark matter | 16 pages. 9 figures | null | 10.1016/j.aop.2023.169324 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we obtain two different static black string solutions by
considering as sources axisymmetric dark matter distributions in 3+1
dimensions. These solutions tend asymptotically to the usual static and
uncharged black string vacuum solution predicted by General Relativity (GR). We
show that both the soluti... | [
{
"created": "Mon, 16 May 2022 12:56:57 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Apr 2023 14:50:03 GMT",
"version": "v2"
}
] | 2023-05-17 | [
[
"Cunha",
"Marcony S.",
""
],
[
"Alencar",
"G.",
""
],
[
"Muniz",
"Celio R.",
""
],
[
"Bezerra",
"Valdir B.",
""
],
[
"Vieira",
"Horácio S.",
""
]
] | In this paper, we obtain two different static black string solutions by considering as sources axisymmetric dark matter distributions in 3+1 dimensions. These solutions tend asymptotically to the usual static and uncharged black string vacuum solution predicted by General Relativity (GR). We show that both the solution... |
gr-qc/9506034 | null | M.Alves | Quantum Corrections to the Two-dimensional Gravity with External Field | 12 pages, Latex, revised version | Class.Quant.Grav. 13 (1996) 171-178 | 10.1088/0264-9381/13/2/005 | null | gr-qc hep-th | null | We introduce an external field to calculate the quantum corrections of the 2d
gravity, via trace anomaly. We show that there are black hole type solution
even in the absence of matter field and cosmological constant. We also see that
these solutions are similar to the ones obtained from dilaton two-dimensional
gravit... | [
{
"created": "Mon, 19 Jun 1995 09:08:58 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Jun 1995 14:18:04 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Alves",
"M.",
""
]
] | We introduce an external field to calculate the quantum corrections of the 2d gravity, via trace anomaly. We show that there are black hole type solution even in the absence of matter field and cosmological constant. We also see that these solutions are similar to the ones obtained from dilaton two-dimensional gravity. |
1408.3008 | S Habib Mazharimousavi | S. Habib Mazharimousavi and M. Halilsoy | Global Monopole metric in 2+1-dimensions | 8 pages, 7 figures published in IJGMMP | International Journal of Geometric Methods in Modern Physics, 16,
1950006 (2019) | 10.1142/S0219887819500063 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In order to obtain the geometry of a global monopole without cosmological
constant and electric charge in $2+1-$ dimensions we make use of the broken $%
O(2)$ symmetry. In the absence of exact solution we determine the series
solutions for both the metric and monopole functions in a consistent manner
that satisfy all... | [
{
"created": "Wed, 13 Aug 2014 13:47:54 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Aug 2014 11:08:52 GMT",
"version": "v2"
},
{
"created": "Fri, 10 Oct 2014 08:19:36 GMT",
"version": "v3"
},
{
"created": "Thu, 11 Dec 2014 09:13:48 GMT",
"version": "v4"
},
{
"c... | 2019-01-17 | [
[
"Mazharimousavi",
"S. Habib",
""
],
[
"Halilsoy",
"M.",
""
]
] | In order to obtain the geometry of a global monopole without cosmological constant and electric charge in $2+1-$ dimensions we make use of the broken $% O(2)$ symmetry. In the absence of exact solution we determine the series solutions for both the metric and monopole functions in a consistent manner that satisfy all e... |
gr-qc/9412054 | null | M. Bordag (Institute for Theoretical Physics, Leipzig University) and
A.A. Bytsenko (State Technical University, 195251 St.Petersburg, Russia) | Quantum Corrections to the Entropy for Higher Spin Fields in Hyperbolic
Space | Revised version -- 1 reference added | Grav.Cosmol. 1 (1995) 266-272 | null | NTZ 23-94 | gr-qc hep-th | null | We calculate the one-loop corrections to the free energy and to the entropy
for fields with arbitrary spins in the space $S^1\otimes H^N$. For conformally
invariant fields by means of a conformal transformation of the metric the
results are valid in Rindler space with $D=N+1$ dimensions. We use the zeta
regularizatio... | [
{
"created": "Tue, 20 Dec 1994 20:25:07 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Dec 1994 21:09:23 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Bordag",
"M.",
"",
"Institute for Theoretical Physics, Leipzig University"
],
[
"Bytsenko",
"A. A.",
"",
"State Technical University, 195251 St.Petersburg, Russia"
]
] | We calculate the one-loop corrections to the free energy and to the entropy for fields with arbitrary spins in the space $S^1\otimes H^N$. For conformally invariant fields by means of a conformal transformation of the metric the results are valid in Rindler space with $D=N+1$ dimensions. We use the zeta regularization ... |
2403.16942 | Kaye Jiale Li Ms | Kaye Jiale Li, Kinwah Wu, Ziri Younsi, Joana Teixeira, Dinesh Singh | Generic gravito-magnetic clock effects | 11 pages | null | null | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativity predicts that two counter-orbiting clocks around a
spinning mass differ in the time required to complete the same orbit. The
difference in these two values for the orbital period is generally referred to
as the gravito-magnetic (GM) clock effect. It has been proposed to measure the
GM clock effect ... | [
{
"created": "Mon, 25 Mar 2024 17:05:12 GMT",
"version": "v1"
}
] | 2024-03-26 | [
[
"Li",
"Kaye Jiale",
""
],
[
"Wu",
"Kinwah",
""
],
[
"Younsi",
"Ziri",
""
],
[
"Teixeira",
"Joana",
""
],
[
"Singh",
"Dinesh",
""
]
] | General relativity predicts that two counter-orbiting clocks around a spinning mass differ in the time required to complete the same orbit. The difference in these two values for the orbital period is generally referred to as the gravito-magnetic (GM) clock effect. It has been proposed to measure the GM clock effect us... |
0804.1029 | Liselotte De Groote | Liselotte De Groote, Norbert Van den Bergh | Complete integration of the aligned Newman Tamburino Maxwell solutions | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the cylindrical class of Newman Tamburino equations in the
presence of an aligned Maxwell field. After obtaining a complete integration of
the field equations we look at the possible vacuum limits and we examine the
symmetries of the general solution.
| [
{
"created": "Mon, 7 Apr 2008 13:55:58 GMT",
"version": "v1"
}
] | 2008-04-08 | [
[
"De Groote",
"Liselotte",
""
],
[
"Bergh",
"Norbert Van den",
""
]
] | We investigate the cylindrical class of Newman Tamburino equations in the presence of an aligned Maxwell field. After obtaining a complete integration of the field equations we look at the possible vacuum limits and we examine the symmetries of the general solution. |
1807.00765 | Peter Horvathy | P.-M. Zhang, M. Cariglia, C. Duval, M. Elbistan, G. W. Gibbons, P.A.
Horvathy | Ion Traps and the Memory Effect for Periodic Gravitational Waves | Final version: 32 pages. An error in sec. 6 (Lagrange points) pointed
out for us by Matt Kalinski (to whom we are grateful) is corrected and the
stability problem clarified. See also our Erratum: Phys. Rev. D 98, 089901(E)
(2018). Our paper is dedicated to the memory of our friend and collaborator
Christian Duv... | Phys. Rev. D 98, 044037 (2018) | 10.1103/PhysRevD.98.044037 | null | gr-qc astro-ph.CO hep-th physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Eisenhart lift of a Paul Trap used to store ions in molecular physics is
a linearly polarized periodic gravitational wave. A modified version of
Dehmelt's Penning Trap is in turn related to circularly polarized periodic
gravitational waves, sought for in inflationary models. Similar equations rule
also the Lagran... | [
{
"created": "Mon, 2 Jul 2018 16:04:11 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Jul 2018 00:48:12 GMT",
"version": "v2"
},
{
"created": "Thu, 9 Aug 2018 06:44:13 GMT",
"version": "v3"
},
{
"created": "Mon, 1 Oct 2018 11:59:22 GMT",
"version": "v4"
},
{
"crea... | 2019-04-12 | [
[
"Zhang",
"P. -M.",
""
],
[
"Cariglia",
"M.",
""
],
[
"Duval",
"C.",
""
],
[
"Elbistan",
"M.",
""
],
[
"Gibbons",
"G. W.",
""
],
[
"Horvathy",
"P. A.",
""
]
] | The Eisenhart lift of a Paul Trap used to store ions in molecular physics is a linearly polarized periodic gravitational wave. A modified version of Dehmelt's Penning Trap is in turn related to circularly polarized periodic gravitational waves, sought for in inflationary models. Similar equations rule also the Lagrange... |
gr-qc/9411061 | Jemal Guven | Riccardo Capovilla and Jemal Guven | Large Deformations of Relativistic Membranes: A Generalization of the
Raychaudhuri Equations | 24 pages, Plain Tex, sign errors corrected, new references added. To
appear in Physical Review D | Phys.Rev. D52 (1995) 1072-1081 | 10.1103/PhysRevD.52.1072 | null | gr-qc | null | A coupled system of non-linear partial differential equations is presented
which describes non-perturbatively the evolution of deformations of a
relativistic membrane of arbitrary dimension, $D$, in an arbitrary background
spacetime. These equations can be considered from a formal point of view as
higher dimensional ... | [
{
"created": "Wed, 23 Nov 1994 22:37:29 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Apr 1995 20:10:07 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Capovilla",
"Riccardo",
""
],
[
"Guven",
"Jemal",
""
]
] | A coupled system of non-linear partial differential equations is presented which describes non-perturbatively the evolution of deformations of a relativistic membrane of arbitrary dimension, $D$, in an arbitrary background spacetime. These equations can be considered from a formal point of view as higher dimensional an... |
2102.06517 | Samuel Kov\'a\v{c}ik | Samuel Kov\'a\v{c}ik | Hawking-Radiation Recoil of Microscopic Black Holes | 10 pages, 3 figures | null | null | null | gr-qc astro-ph.CO hep-ph | http://creativecommons.org/licenses/by/4.0/ | Hawking radiation would make microscopic black holes evaporate rapidly, which
excludes them from many astrophysical considerations. However, it has been
argued that the quantum nature of space would alter this behaviour: the
temperature of a Planck-size black hole vanishes, and what is left behind is a
Planck-mass re... | [
{
"created": "Thu, 11 Feb 2021 11:31:30 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Nov 2021 20:58:02 GMT",
"version": "v2"
}
] | 2021-11-05 | [
[
"Kováčik",
"Samuel",
""
]
] | Hawking radiation would make microscopic black holes evaporate rapidly, which excludes them from many astrophysical considerations. However, it has been argued that the quantum nature of space would alter this behaviour: the temperature of a Planck-size black hole vanishes, and what is left behind is a Planck-mass remn... |
2306.17512 | James Lucietti | Maciej Dunajski, James Lucietti | Intrinsic rigidity of extremal horizons | 13 pages | null | null | null | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that the intrinsic geometry of compact cross-sections of any vacuum
extremal horizon must admit a Killing vector field. If the cross-sections are
two-dimensional spheres, this implies that the most general solution is the
extremal Kerr horizon and completes the classification of the associated
near-horizon g... | [
{
"created": "Fri, 30 Jun 2023 09:56:34 GMT",
"version": "v1"
}
] | 2023-07-03 | [
[
"Dunajski",
"Maciej",
""
],
[
"Lucietti",
"James",
""
]
] | We prove that the intrinsic geometry of compact cross-sections of any vacuum extremal horizon must admit a Killing vector field. If the cross-sections are two-dimensional spheres, this implies that the most general solution is the extremal Kerr horizon and completes the classification of the associated near-horizon geo... |
2001.00010 | Gauranga Samanta | Nisha Godani and Gauranga C. Samanta | Traversable Wormholes in $R+\alpha R^n$ Gravity | 33 pages, 16 figures, accepted in EPJC | null | 10.1140/epjc/s10052-019-7587-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, the study of traversable wormholes in $f(R)$ gravity with the
function $f(R)=R+\alpha R^n$, where $\alpha$ and $n$ are arbitrary constants,
is taken into account. The shape function $b(r)=\frac{r}{\exp(r-r_0)}$,
proposed by Samanta et al. \cite{godani1}, is considered. The energy conditions
with respect... | [
{
"created": "Mon, 30 Dec 2019 05:01:36 GMT",
"version": "v1"
}
] | 2020-01-29 | [
[
"Godani",
"Nisha",
""
],
[
"Samanta",
"Gauranga C.",
""
]
] | In this work, the study of traversable wormholes in $f(R)$ gravity with the function $f(R)=R+\alpha R^n$, where $\alpha$ and $n$ are arbitrary constants, is taken into account. The shape function $b(r)=\frac{r}{\exp(r-r_0)}$, proposed by Samanta et al. \cite{godani1}, is considered. The energy conditions with respect t... |
1601.03148 | Taeyoon Moon | Yun Soo Myung and Taeyoon Moon | Inflaton decay and reheating in nonminimal derivative coupling | 1+18 pages, 11 figures, accepted for publication in JCAP | null | 10.1088/1475-7516/2016/07/014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the inflaton decay and reheating period after the end of
inflation in the non-minimal derivative coupling (NDC) model with chaotic
potential. In general, this model is known to provide an enhanced slow-roll
inflation caused by gravitationally enhanced friction. We find violent
oscillations of Hubble pa... | [
{
"created": "Wed, 13 Jan 2016 07:20:02 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Jul 2016 03:53:25 GMT",
"version": "v2"
}
] | 2016-07-20 | [
[
"Myung",
"Yun Soo",
""
],
[
"Moon",
"Taeyoon",
""
]
] | We investigate the inflaton decay and reheating period after the end of inflation in the non-minimal derivative coupling (NDC) model with chaotic potential. In general, this model is known to provide an enhanced slow-roll inflation caused by gravitationally enhanced friction. We find violent oscillations of Hubble para... |
2206.12256 | Gamal G.L. Nashed | G. G. L. Nashed and Emmanuel N. Saridakis | New anisotropic star solutions in mimetic gravity | 20 pages 10 figures, will appear in EPJP | Eur.Phys.J.Plus 138 (2023) 318 | 10.1140/epjp/s13360-023-03767-y | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We extract new classes of anisotropic solutions in the framework of mimetic
gravity, by applying the Tolman-Finch-Skea metric and a specific anisotropy not
directly depending on it, and by matching smoothly the interior anisotropic
solution to the Schwarzschild exterior one. Then, in order to provide a
transparent pi... | [
{
"created": "Thu, 23 Jun 2022 08:03:18 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Feb 2023 07:58:31 GMT",
"version": "v2"
}
] | 2023-04-19 | [
[
"Nashed",
"G. G. L.",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We extract new classes of anisotropic solutions in the framework of mimetic gravity, by applying the Tolman-Finch-Skea metric and a specific anisotropy not directly depending on it, and by matching smoothly the interior anisotropic solution to the Schwarzschild exterior one. Then, in order to provide a transparent pict... |
1207.2914 | Xiao Zhang | Yaohua Wang, Naqing Xie, Xiao Zhang | The positive energy theorem for asymptotically anti-de Sitter spacetimes | 24 pages, revised substantially, the new energy-momentum inequality
proved. Appeared in Communications in Contemporary Mathematics | null | 10.1142/S0219199715500157 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We establish the inequality for Henneaux-Teitelboim's total energy-momentum
for asymptotically anti-de Sitter initial data sets which are asymptotic to
arbitrary $t$-slice in anti-de Sitter spacetime. In particular, when $t=0$, it
generalizes Chru\'{s}ciel-Maerten-Tod's inequality in the center of AdS mass
coordinate... | [
{
"created": "Thu, 12 Jul 2012 10:57:31 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Jul 2012 06:10:42 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Feb 2013 04:10:49 GMT",
"version": "v3"
},
{
"created": "Mon, 25 Nov 2013 07:20:25 GMT",
"version": "v4"
},
{
"cr... | 2015-02-18 | [
[
"Wang",
"Yaohua",
""
],
[
"Xie",
"Naqing",
""
],
[
"Zhang",
"Xiao",
""
]
] | We establish the inequality for Henneaux-Teitelboim's total energy-momentum for asymptotically anti-de Sitter initial data sets which are asymptotic to arbitrary $t$-slice in anti-de Sitter spacetime. In particular, when $t=0$, it generalizes Chru\'{s}ciel-Maerten-Tod's inequality in the center of AdS mass coordinates.... |
gr-qc/0207088 | Jeronimo Cortez | Alejandro Corichi, Jeronimo Cortez and Hernando Quevedo | On the Schroedinger Representation for a Scalar Field on Curved
Spacetime | 11 pages, Revtex, no figures | Phys.Rev. D66 (2002) 085025 | 10.1103/PhysRevD.66.085025 | null | gr-qc hep-th math-ph math.MP | null | It is generally known that linear (free) field theories are one of the few
QFT that are exactly soluble. In the Schroedinger functional description of a
scalar field on flat Minkowski spacetime and for flat embeddings, it is known
that the usual Fock representation is described by a Gaussian measure. In this
paper, a... | [
{
"created": "Wed, 24 Jul 2002 01:33:52 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Corichi",
"Alejandro",
""
],
[
"Cortez",
"Jeronimo",
""
],
[
"Quevedo",
"Hernando",
""
]
] | It is generally known that linear (free) field theories are one of the few QFT that are exactly soluble. In the Schroedinger functional description of a scalar field on flat Minkowski spacetime and for flat embeddings, it is known that the usual Fock representation is described by a Gaussian measure. In this paper, arb... |
2404.17405 | Miguel Zumalacarregui | Miguel Zumalac\'arregui | Lens Stochastic Diffraction: A Signature of Compact Structures in
Gravitational-Wave Data | 5 pages, 4 figures. Comments welcome! | null | null | null | gr-qc astro-ph.CO astro-ph.HE hep-ph | http://creativecommons.org/licenses/by/4.0/ | Every signal propagating through the universe is diffracted by the
gravitational fields of intervening objects, aka gravitational lenses.
Diffraction is most efficient when caused by compact lenses, which invariably
produce additional images of a source. The signals associated with additional
images are generically f... | [
{
"created": "Fri, 26 Apr 2024 13:31:13 GMT",
"version": "v1"
}
] | 2024-04-29 | [
[
"Zumalacárregui",
"Miguel",
""
]
] | Every signal propagating through the universe is diffracted by the gravitational fields of intervening objects, aka gravitational lenses. Diffraction is most efficient when caused by compact lenses, which invariably produce additional images of a source. The signals associated with additional images are generically fai... |
2212.14147 | Oscar Lasso Andino | \'Alvaro Duenas-Vidal, Oscar Lasso Andino | The Jacobi metric approach for dynamical wormholes | 14 pages | Gen Relativ Gravit 55, 9 (2023) | 10.1007/s10714-022-03060-w | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the Jacobi metric formalism for dynamical wormholes. We show that
in isotropic dynamical spacetimes , a first integral of the geodesic equations
can be found using the Jacobi metric, and without any use of geodesic equation.
This enables us to reduce the geodesic motion in dynamical wormholes to a
dynamics... | [
{
"created": "Thu, 29 Dec 2022 02:05:11 GMT",
"version": "v1"
}
] | 2023-01-02 | [
[
"Duenas-Vidal",
"Álvaro",
""
],
[
"Andino",
"Oscar Lasso",
""
]
] | We present the Jacobi metric formalism for dynamical wormholes. We show that in isotropic dynamical spacetimes , a first integral of the geodesic equations can be found using the Jacobi metric, and without any use of geodesic equation. This enables us to reduce the geodesic motion in dynamical wormholes to a dynamics d... |
1409.3391 | I-Sheng Yang | Ue-Li Pen and I-Sheng Yang | Strong lensing interferometry for compact binaries | 5 pages, 5 figures | Phys. Rev. D 91, 064044 (2015) | 10.1103/PhysRevD.91.064044 | null | gr-qc astro-ph.HE astro-ph.IM hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a possibility to improve the current precision measurements on
compact binaries. When the orbital axis is almost perpendicular to our line of
sight, a pulsar behind its companion can form two strong-lensing images. These
images cannot be resolved, but we can use multi-wavelength interferometry to
accuratel... | [
{
"created": "Thu, 11 Sep 2014 11:17:06 GMT",
"version": "v1"
}
] | 2015-03-25 | [
[
"Pen",
"Ue-Li",
""
],
[
"Yang",
"I-Sheng",
""
]
] | We propose a possibility to improve the current precision measurements on compact binaries. When the orbital axis is almost perpendicular to our line of sight, a pulsar behind its companion can form two strong-lensing images. These images cannot be resolved, but we can use multi-wavelength interferometry to accurately ... |
1510.08215 | Bogeun Gwak | Bogeun Gwak, Bum-Hoon Lee | Thermodynamics of Three-dimensional Black Holes via Charged Particle
Absorption | 6 pages | Phys. Lett. B755 (2016) 324-327 | 10.1016/j.physletb.2016.02.028 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have shown that changes occur in a (2+1)-dimensional charged black hole by
adding a charged probe. The particle increases the entropy of the black hole
and guarantees the second law of thermodynamics. The first law of
thermodynamics is derived from the change in the black hole mass. Using the
particle absorption, ... | [
{
"created": "Wed, 28 Oct 2015 07:33:58 GMT",
"version": "v1"
}
] | 2017-12-01 | [
[
"Gwak",
"Bogeun",
""
],
[
"Lee",
"Bum-Hoon",
""
]
] | We have shown that changes occur in a (2+1)-dimensional charged black hole by adding a charged probe. The particle increases the entropy of the black hole and guarantees the second law of thermodynamics. The first law of thermodynamics is derived from the change in the black hole mass. Using the particle absorption, we... |
0908.4006 | John T. Whelan | Stephen Fairhurst, Gianluca M Guidi, Patrice Hello, John T Whelan,
Graham Woan | Current status of gravitational-wave observations | 21 pages, LaTeX, uses svjour3.cls, 1 figure, for GRG special issue on
Einstein Telescope | Gen.Rel.Grav.43:387-407,2011 | 10.1007/s10714-010-1009-1 | LIGO-P0900092 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The first generation of gravitational wave interferometric detectors has
taken data at, or close to, their design sensitivity. This data has been
searched for a broad range of gravitational wave signatures. An overview of
gravitational wave search methods and results are presented. Searches for
gravitational waves fr... | [
{
"created": "Thu, 27 Aug 2009 13:07:31 GMT",
"version": "v1"
}
] | 2011-01-28 | [
[
"Fairhurst",
"Stephen",
""
],
[
"Guidi",
"Gianluca M",
""
],
[
"Hello",
"Patrice",
""
],
[
"Whelan",
"John T",
""
],
[
"Woan",
"Graham",
""
]
] | The first generation of gravitational wave interferometric detectors has taken data at, or close to, their design sensitivity. This data has been searched for a broad range of gravitational wave signatures. An overview of gravitational wave search methods and results are presented. Searches for gravitational waves from... |
2312.16736 | Remo Garattini | R. Garattini and A.G. Tzikas | Traversable Wormholes induced by Stress Energy Conservation: combining
Casimir Energy with a scalar field | LaTeX 14 pages | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We investigate possible manifolds characterizing traversable wormholes in the
presence of a scalar field, which is minimally coupled to gravity and has both
kinetic and potential energy. The feature of traversability requires the
violation of the null energy condition, which, in turn, signals the existence
of exotic ... | [
{
"created": "Wed, 27 Dec 2023 22:35:08 GMT",
"version": "v1"
}
] | 2024-01-01 | [
[
"Garattini",
"R.",
""
],
[
"Tzikas",
"A. G.",
""
]
] | We investigate possible manifolds characterizing traversable wormholes in the presence of a scalar field, which is minimally coupled to gravity and has both kinetic and potential energy. The feature of traversability requires the violation of the null energy condition, which, in turn, signals the existence of exotic ma... |
2205.05683 | Muhammad Sharif | M. Sharif and Ayesha Anjum | Impact of Charge on the Complexity of Static Sphere in
$f(R,\textbf{T}^{2})$ Gravity | 24 pages, 3 figures, to appear in EPJP | Eur. Phys. J. Plus. 137(2022)602 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper investigates the complexity of a charged static sphere filled with
anisotropic matter in the background of energy-momentum squared gravity. For
this purpose, we evaluate the modified field and conservation equations to
determine the structure of celestial system. The mass function is calculated
through Mis... | [
{
"created": "Wed, 11 May 2022 09:07:54 GMT",
"version": "v1"
}
] | 2022-05-19 | [
[
"Sharif",
"M.",
""
],
[
"Anjum",
"Ayesha",
""
]
] | This paper investigates the complexity of a charged static sphere filled with anisotropic matter in the background of energy-momentum squared gravity. For this purpose, we evaluate the modified field and conservation equations to determine the structure of celestial system. The mass function is calculated through Misne... |
gr-qc/0509069 | Stephane Fay | Stephane Fay | Homogeneous cosmology dynamics revealed by Hamiltonian ADM formalism | 23 pages, 3 figures, book chapter | Quantum cosmology research trends. Horizons in world physics, Nova
publishers, vol 246, 2005 | null | null | gr-qc | null | We study the homogeneous but anisotropic cosmological models of Bianchi in
presence of a massive scalar field using the ADM Hamiltonian formalism. We
begin to describe the main steps to find the ADM Hamiltonian of the General
Relativity with a massive scalar field and then we study the dynamics of the
flat Bianchi ty... | [
{
"created": "Fri, 16 Sep 2005 15:33:51 GMT",
"version": "v1"
}
] | 2014-04-15 | [
[
"Fay",
"Stephane",
""
]
] | We study the homogeneous but anisotropic cosmological models of Bianchi in presence of a massive scalar field using the ADM Hamiltonian formalism. We begin to describe the main steps to find the ADM Hamiltonian of the General Relativity with a massive scalar field and then we study the dynamics of the flat Bianchi type... |
gr-qc/9310022 | Huw Price | Huw Price | Cosmology, Time's Arrow, and That Old Double Standard | 26 pages, in LaTeX with 3 figures appended as postscript file.
(Written for Time's Arrows Today Conference, UBC, Vancouver, June 1992;
forthcoming in Savitt, S. (ed), 'Time's Arrows Today', Cambridge University
Press, 1994.) | null | null | null | gr-qc | null | It is widely accepted that temporal asymmetry is largely a cosmological
problem; the task of explaining temporal asymmetry reduces in the main to that
of explaining an aspect of the condition of the early universe. However,
cosmologists who discuss these issues often make mistakes similar to those that
plagued ninete... | [
{
"created": "Fri, 15 Oct 1993 04:39:37 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"Price",
"Huw",
""
]
] | It is widely accepted that temporal asymmetry is largely a cosmological problem; the task of explaining temporal asymmetry reduces in the main to that of explaining an aspect of the condition of the early universe. However, cosmologists who discuss these issues often make mistakes similar to those that plagued nineteen... |
gr-qc/0507020 | L\'aszl\'o \'A Gergely | L\'aszl\'o \'A. Gergely, Zolt\'an Kov\'acs | Gravitational dynamics in s+1+1 dimensions | published version, typo in Eq. (47) corrected | Phys.Rev. D72 (2005) 064015 | 10.1103/PhysRevD.72.064015 | null | gr-qc astro-ph hep-th | null | We present the concomitant decomposition of an (s+2)-dimensional spacetime
both with respect to a timelike and a spacelike direction. The formalism we
develop is suited for the study of the initial value problem and for canonical
gravitational dynamics in brane-world scenarios. The bulk metric is replaced by
two sets... | [
{
"created": "Wed, 6 Jul 2005 13:56:36 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Mar 2006 13:41:08 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Gergely",
"László Á.",
""
],
[
"Kovács",
"Zoltán",
""
]
] | We present the concomitant decomposition of an (s+2)-dimensional spacetime both with respect to a timelike and a spacelike direction. The formalism we develop is suited for the study of the initial value problem and for canonical gravitational dynamics in brane-world scenarios. The bulk metric is replaced by two sets o... |
2310.05591 | Lei Ming | Lei Ming, Shi-Dong Liang, Hong-Hao Zhang and Tiberiu Harko | From the Weyl-Schr\"{o}dinger connection to the accelerating Universe --
extending Einstein's gravity via a length preserving nonmetricity | 21 pages, 11 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the important extensions of Riemann geometry is Weyl geometry, which
is essentially based on the ideas of conformal invariance and nonmetricity. A
similar non-Riemannian geometry was proposed by Erwin Schr\"{o}dinger in the
late 1940s, in a geometry which is simpler, and (probably) more elegant than
the Weyl g... | [
{
"created": "Mon, 9 Oct 2023 10:22:44 GMT",
"version": "v1"
}
] | 2023-10-10 | [
[
"Ming",
"Lei",
""
],
[
"Liang",
"Shi-Dong",
""
],
[
"Zhang",
"Hong-Hao",
""
],
[
"Harko",
"Tiberiu",
""
]
] | One of the important extensions of Riemann geometry is Weyl geometry, which is essentially based on the ideas of conformal invariance and nonmetricity. A similar non-Riemannian geometry was proposed by Erwin Schr\"{o}dinger in the late 1940s, in a geometry which is simpler, and (probably) more elegant than the Weyl geo... |
2208.11913 | Lijing Shao | Ziming Wang, Junjie Zhao, Zihe An, Lijing Shao, Zhoujian Cao | Simultaneous bounds on the gravitational dipole radiation and varying
gravitational constant from compact binary inspirals | 16 pages, 9 figures, 2 tables; accepted by Physics Letters B | Physics Letters B 834 (2022) 137416 | 10.1016/j.physletb.2022.137416 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Compact binaries are an important class of gravitational-wave (GW) sources
that can be detected by current and future GW observatories. They provide a
testbed for general relativity (GR) in the highly dynamical strong-field
regime. Here, we use GWs from inspiraling binary neutron stars and binary black
holes to inves... | [
{
"created": "Thu, 25 Aug 2022 07:50:53 GMT",
"version": "v1"
}
] | 2022-09-12 | [
[
"Wang",
"Ziming",
""
],
[
"Zhao",
"Junjie",
""
],
[
"An",
"Zihe",
""
],
[
"Shao",
"Lijing",
""
],
[
"Cao",
"Zhoujian",
""
]
] | Compact binaries are an important class of gravitational-wave (GW) sources that can be detected by current and future GW observatories. They provide a testbed for general relativity (GR) in the highly dynamical strong-field regime. Here, we use GWs from inspiraling binary neutron stars and binary black holes to investi... |
gr-qc/0512156 | Gamal Nashed G.L. | Gamal G.L. Nashed | Axially symmetric solution in Teleparallel Theory of Gravitation | 9 pages, Latex | null | null | null | gr-qc | null | An exact solution has an axial symmetry is obtained in the teleparallel
theory of gravitation. The associated metric has the structure function
G(xi)=1-xi^2-2mA(xi)^3. The cubic nature of the structure function can make
calculations cumbersome. Using a coordinate transformation we get a tetrad that
its associated met... | [
{
"created": "Wed, 28 Dec 2005 09:12:54 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Nashed",
"Gamal G. L.",
""
]
] | An exact solution has an axial symmetry is obtained in the teleparallel theory of gravitation. The associated metric has the structure function G(xi)=1-xi^2-2mA(xi)^3. The cubic nature of the structure function can make calculations cumbersome. Using a coordinate transformation we get a tetrad that its associated metri... |
2005.10024 | Hossein Mohseni Sadjadi | H. Mohseni Sadjadi | On cosmic acceleration in four dimensional Einstein-Gauss-Bonnet gravity | major revision, 17 pages, typos corrected, accepted by Physics of the
Dark Universe | Phys. Dark Univ. 30, 100728 (2020) | 10.1016/j.dark.2020.100728 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the possibility that in the model introduced in \cite{GBN}, the
Gauss-Bonnet term alone gives rise to the cosmic acceleration and
super-acceleration in four-dimensional FLRW space-time at the late time. We
also discuss transitions from deceleration to acceleration and acceleration to
super-acceleration. We s... | [
{
"created": "Tue, 19 May 2020 10:43:15 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Jul 2020 10:00:12 GMT",
"version": "v2"
},
{
"created": "Fri, 3 Jul 2020 09:24:28 GMT",
"version": "v3"
},
{
"created": "Thu, 24 Sep 2020 12:58:09 GMT",
"version": "v4"
}
] | 2021-04-26 | [
[
"Sadjadi",
"H. Mohseni",
""
]
] | We study the possibility that in the model introduced in \cite{GBN}, the Gauss-Bonnet term alone gives rise to the cosmic acceleration and super-acceleration in four-dimensional FLRW space-time at the late time. We also discuss transitions from deceleration to acceleration and acceleration to super-acceleration. We sho... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.