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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1403.1320 | Kiyoshi Shiraishi | Takuya Maki and Kiyoshi Shiraishi | Multi-black hole solutions in cosmological Einstein-Maxwell-dilaton
theory | 10 pages, no figure. a typo fixed | Classical and Quantum Gravity 10, No. 10, pp.2171-2178 (1993) | 10.1088/0264-9381/10/10/024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Adopting a simple ansatz, we find exact solutions to the
Einstein-Maxwell-dilaton equations, which stand for the multi-black hole
configuration with maximal charge in a cosmological metric and dilaton field
background driven by a cosmological term.
| [
{
"created": "Thu, 6 Mar 2014 01:48:26 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Mar 2019 07:06:19 GMT",
"version": "v2"
}
] | 2019-03-04 | [
[
"Maki",
"Takuya",
""
],
[
"Shiraishi",
"Kiyoshi",
""
]
] | Adopting a simple ansatz, we find exact solutions to the Einstein-Maxwell-dilaton equations, which stand for the multi-black hole configuration with maximal charge in a cosmological metric and dilaton field background driven by a cosmological term. |
0902.0292 | Jack Gegenberg | J. Gegenberg, G. Kunstatter | 2-D Midisuperspace Models for Quantum Black Holes | 16 pages; to appear in a World Scientific Review Volume | null | 10.1142/9789814277839_0013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dimensionally reduced spherically symmetric gravity and its generalization,
generic 2-D dilaton gravity, provide ideal theoretical laboratories for the
study of black hole quantum mechanics and thermodynamics. They are sufficiently
simple to be tractable but contain enough structure to allow the study of many
deep is... | [
{
"created": "Mon, 2 Feb 2009 14:46:29 GMT",
"version": "v1"
}
] | 2016-12-21 | [
[
"Gegenberg",
"J.",
""
],
[
"Kunstatter",
"G.",
""
]
] | Dimensionally reduced spherically symmetric gravity and its generalization, generic 2-D dilaton gravity, provide ideal theoretical laboratories for the study of black hole quantum mechanics and thermodynamics. They are sufficiently simple to be tractable but contain enough structure to allow the study of many deep issu... |
1211.4807 | Claudio Perini | Claudio Perini | Holonomy-flux spinfoam amplitude | 33 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a holomorphic representation for the Lorentzian EPRL spinfoam on
arbitrary 2-complexes. The representation is obtained via the
Ashtekar-Lewandowski-Marolf-Mour\~ao-Thiemann heat kernel coherent state
transform. The new variables are classical holonomy-flux phase space variables
$(h,X)\simeq \mathcal T^*S... | [
{
"created": "Tue, 20 Nov 2012 17:22:01 GMT",
"version": "v1"
}
] | 2012-11-21 | [
[
"Perini",
"Claudio",
""
]
] | We introduce a holomorphic representation for the Lorentzian EPRL spinfoam on arbitrary 2-complexes. The representation is obtained via the Ashtekar-Lewandowski-Marolf-Mour\~ao-Thiemann heat kernel coherent state transform. The new variables are classical holonomy-flux phase space variables $(h,X)\simeq \mathcal T^*SU(... |
gr-qc/0606016 | Spiros Cotsakis | Spiros Cotsakis | Future Singularities and Completeness in Cosmology | 10 pages, latex. To appear in the Proceedings of the Thessaloniki
Meeting on Cosmology and Gravitational Physics, Thessaloniki, December 2005,
Greece | null | null | Samos-RG-MPC/060604-1 | gr-qc | null | We review recent work on the existence and nature of cosmological
singularities that can be formed during the evolution of generic as well as
specific cosmological spacetimes in general relativity. We first discuss
necessary and sufficient conditions for the existence of geodesically
incomplete spacetimes based on a ... | [
{
"created": "Sun, 4 Jun 2006 11:33:02 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cotsakis",
"Spiros",
""
]
] | We review recent work on the existence and nature of cosmological singularities that can be formed during the evolution of generic as well as specific cosmological spacetimes in general relativity. We first discuss necessary and sufficient conditions for the existence of geodesically incomplete spacetimes based on a te... |
2002.05029 | Branislav Cvetkovi\'c | Milutin Blagojevi\'c and Branislav Cvetkovi\'c | Entropy in general relativity: Kerr-AdS black hole | LaTeX, 12 pages | Phys. Rev. D 101, 084023 (2020) | 10.1103/PhysRevD.101.084023 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A general Hamiltonian approach to black hole thermodynamics is used to study
entropy and conserved charges for Kerr-AdS solutions in general relativity.
These thermodynamic variables are first consistently defined by choosing
suitable boundary conditions, and then, they are shown to satisfy the first law
of black hol... | [
{
"created": "Wed, 12 Feb 2020 14:37:55 GMT",
"version": "v1"
}
] | 2020-04-15 | [
[
"Blagojević",
"Milutin",
""
],
[
"Cvetković",
"Branislav",
""
]
] | A general Hamiltonian approach to black hole thermodynamics is used to study entropy and conserved charges for Kerr-AdS solutions in general relativity. These thermodynamic variables are first consistently defined by choosing suitable boundary conditions, and then, they are shown to satisfy the first law of black hole ... |
2110.11378 | Pablo Antonio Cano Molina-Ni\~nirola | Pablo A. Cano, Kwinten Fransen, Thomas Hertog, Simon Maenaut | Gravitational ringing of rotating black holes in higher-derivative
gravity | 10 pages + appendices, 2 figures, double column. v2: references
added, version sent to the journal | null | 10.1103/PhysRevD.105.024064 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study gravitational perturbations of slowly-rotating black holes in a
general effective-field-theory extension of general relativity that includes up
to eight-derivative terms. We show that two Schr\"odinger-like equations with
spin-dependent effective potentials govern the odd - and even-parity master
variables. ... | [
{
"created": "Thu, 21 Oct 2021 18:00:12 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Nov 2021 09:14:21 GMT",
"version": "v2"
}
] | 2022-02-02 | [
[
"Cano",
"Pablo A.",
""
],
[
"Fransen",
"Kwinten",
""
],
[
"Hertog",
"Thomas",
""
],
[
"Maenaut",
"Simon",
""
]
] | We study gravitational perturbations of slowly-rotating black holes in a general effective-field-theory extension of general relativity that includes up to eight-derivative terms. We show that two Schr\"odinger-like equations with spin-dependent effective potentials govern the odd - and even-parity master variables. Th... |
gr-qc/9610023 | Pedro. Silva | Ian G. Moss and Pedro J. Silva | BRST Invariant Boundary Conditions for Gauge Theories | 15 pages, RevTeX | Phys.Rev. D55 (1997) 1072-1078 | 10.1103/PhysRevD.55.1072 | NCL96-TP2 | gr-qc | null | A systematic way of generating sets of local boundary conditions on the gauge
fields in a path integral is presented. These boundary conditions are suitable
for one--loop effective action calculations on manifolds with boundary and for
quantum cosmology. For linearised gravity, the general proceedure described
here l... | [
{
"created": "Mon, 14 Oct 1996 16:21:42 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Moss",
"Ian G.",
""
],
[
"Silva",
"Pedro J.",
""
]
] | A systematic way of generating sets of local boundary conditions on the gauge fields in a path integral is presented. These boundary conditions are suitable for one--loop effective action calculations on manifolds with boundary and for quantum cosmology. For linearised gravity, the general proceedure described here lea... |
1304.5296 | Lior M. Burko | Lior M. Burko and Gaurav Khanna | Self-force gravitational waveforms for extreme and intermediate mass
ratio inspirals. II: Importance of the second-order dissipative effect | 8 pages, 10 figures, accepted to Phys. Rev. D. Version 2 includes
elaboration of the justification for the model used and for the gauge
invariance of our results, and correction of typos | Physical Review D 88 (2013), 024002 | 10.1103/PhysRevD.88.024002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the importance of the second-order dissipative self force for
gravitational wave dephasing for an extreme or intermediate mass ratio system
moving along a quasi-circular Schwarzschild orbit. For the first-order self
force we use the fully relativistic force in the Lorenz gauge for eternally
circular geode... | [
{
"created": "Fri, 19 Apr 2013 02:10:18 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Jun 2013 21:36:17 GMT",
"version": "v2"
}
] | 2013-07-12 | [
[
"Burko",
"Lior M.",
""
],
[
"Khanna",
"Gaurav",
""
]
] | We consider the importance of the second-order dissipative self force for gravitational wave dephasing for an extreme or intermediate mass ratio system moving along a quasi-circular Schwarzschild orbit. For the first-order self force we use the fully relativistic force in the Lorenz gauge for eternally circular geodesi... |
gr-qc/9909009 | Heribert Genreith | H. Genreith | The Large Numbers Hypothesis: Outline of a self-similar
quantum-cosmological Model | Latex, 10 pages | null | null | null | gr-qc astro-ph | null | In 1919 A. Einstein suspected first that gravitational fields could play an
essential role in the structure of elementary particles. In 1937, P.A.M. Dirac
found a miraculous link between the properties of the visible Universe and
elementary particles. Both conjectures stayed alive through the following
decades but st... | [
{
"created": "Thu, 2 Sep 1999 19:51:58 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Genreith",
"H.",
""
]
] | In 1919 A. Einstein suspected first that gravitational fields could play an essential role in the structure of elementary particles. In 1937, P.A.M. Dirac found a miraculous link between the properties of the visible Universe and elementary particles. Both conjectures stayed alive through the following decades but stil... |
1801.10374 | Mariano Cadoni | Mariano Cadoni, Roberto Casadio, Andrea Giusti, Matteo Tuveri | Emergence of a Dark Force in Corpuscular Gravity | 20 pages, no figures | Phys. Rev. D 97, 044047 (2018) | 10.1103/PhysRevD.97.044047 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the emergent laws of gravity when Dark Energy and the de
Sitter space-time are modelled as a critical Bose-Einstein condensate of a
large number of soft gravitons $N_{\rm G}$. We argue that this scenario
requires the presence of various regimes of gravity in which $N_{\rm G}$ scales
in different ways. ... | [
{
"created": "Wed, 31 Jan 2018 09:40:37 GMT",
"version": "v1"
}
] | 2018-03-07 | [
[
"Cadoni",
"Mariano",
""
],
[
"Casadio",
"Roberto",
""
],
[
"Giusti",
"Andrea",
""
],
[
"Tuveri",
"Matteo",
""
]
] | We investigate the emergent laws of gravity when Dark Energy and the de Sitter space-time are modelled as a critical Bose-Einstein condensate of a large number of soft gravitons $N_{\rm G}$. We argue that this scenario requires the presence of various regimes of gravity in which $N_{\rm G}$ scales in different ways. Mo... |
1304.0209 | Yongge Ma | Yu Han, Yongge Ma, Xiangdong Zhang | Connection Dynamics for Higher Dimensional Scalar-Tensor Theories of
Gravity | 13 pages | Mod. Phys. Lett. A, Vol. 29, No. 28 (2014) 1450134 | 10.1142/S021773231450134X | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The scalar-tensor theories of gravity in spacetime dimensions $D+1>2$ are
studied. By doing Hamiltonian analysis, we obtain the geometrical dynamics of
the theories from their Lagrangian. The Hamiltonian formalism indicates that
the theories are naturally divided into two sectors by the coupling parameter
$\omega$. T... | [
{
"created": "Sun, 31 Mar 2013 14:27:38 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Feb 2014 16:53:00 GMT",
"version": "v2"
}
] | 2015-06-15 | [
[
"Han",
"Yu",
""
],
[
"Ma",
"Yongge",
""
],
[
"Zhang",
"Xiangdong",
""
]
] | The scalar-tensor theories of gravity in spacetime dimensions $D+1>2$ are studied. By doing Hamiltonian analysis, we obtain the geometrical dynamics of the theories from their Lagrangian. The Hamiltonian formalism indicates that the theories are naturally divided into two sectors by the coupling parameter $\omega$. The... |
2112.12491 | Stephen Adler | Stephen L. Adler | A mechanism for a "leaky" black hole to catalyze galaxy formation | 6 pages | Int. J. Mod. Phys. D 31, 2242007 (2022) | 10.1142/S021827182242007X | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the gravitational field of a Schwarzschild-like black hole, particles
infalling from rest at infinity, and black hole "wind" particles with
relativistic velocity leaking radially out from the nominal horizon, both have
the same magnitude of velocity at any radius from the hole. Hence when equally
massive infalling... | [
{
"created": "Thu, 23 Dec 2021 12:32:28 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Dec 2021 17:29:18 GMT",
"version": "v2"
},
{
"created": "Mon, 7 Mar 2022 13:40:35 GMT",
"version": "v3"
},
{
"created": "Tue, 8 Mar 2022 13:23:03 GMT",
"version": "v4"
},
{
"cre... | 2023-01-03 | [
[
"Adler",
"Stephen L.",
""
]
] | In the gravitational field of a Schwarzschild-like black hole, particles infalling from rest at infinity, and black hole "wind" particles with relativistic velocity leaking radially out from the nominal horizon, both have the same magnitude of velocity at any radius from the hole. Hence when equally massive infalling a... |
2111.05288 | Soichiro Isoyama | Soichiro Isoyama, Ryuichi Fujita, Alvin J. K. Chua, Hiroyuki Nakano,
Adam Pound, Norichika Sago | Adiabatic waveforms from extreme-mass-ratio inspirals: an analytical
approach | 9+5 pages,4+1 figures,5PN-e10 Teukolsky data are all available at the
Black Hole Perturbation Club: https://sites.google.com/view/bhpc1996/data
v2:updated references,expanded supplemental discussion of initial
phases.v3:contains minor corrections and more references.Matches version
published in PRL | Phys. Rev. Lett. 128, 231101 (2022) | 10.1103/PhysRevLett.128.231101 | YITP-21-114,KUNS-2901,OCU-PHYS-551,AP-GR-175 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Scientific analysis for the gravitational-wave detector LISA will require
theoretical waveforms from extreme-mass-ratio inspirals (EMRIs) that
extensively cover all possible orbital and spin configurations around
astrophysical Kerr black holes. However, on-the-fly calculations of these
waveforms have not yet overcome... | [
{
"created": "Tue, 9 Nov 2021 17:36:48 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Nov 2021 16:19:12 GMT",
"version": "v2"
},
{
"created": "Sun, 12 Jun 2022 09:16:56 GMT",
"version": "v3"
}
] | 2022-06-22 | [
[
"Isoyama",
"Soichiro",
""
],
[
"Fujita",
"Ryuichi",
""
],
[
"Chua",
"Alvin J. K.",
""
],
[
"Nakano",
"Hiroyuki",
""
],
[
"Pound",
"Adam",
""
],
[
"Sago",
"Norichika",
""
]
] | Scientific analysis for the gravitational-wave detector LISA will require theoretical waveforms from extreme-mass-ratio inspirals (EMRIs) that extensively cover all possible orbital and spin configurations around astrophysical Kerr black holes. However, on-the-fly calculations of these waveforms have not yet overcome t... |
1612.09521 | Daniele Oriti | Daniele Oriti | The universe as a quantum gravity condensate | 20 pages; extended version of the invited contribution to the special
issue "Testing Quantum Gravity with Cosmology" of Comptes rendus Physique,
Acad\'emie des sciences, Paris, edited by A. Barrau | null | 10.1016/j.crhy.2017.02.003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is an introduction to the approach to the extraction of cosmological
dynamics from full quantum gravity based on group field theory condensates. We
outline its general perspective, which sees cosmology as the hydrodynamics of
the fundamental quantum gravity degrees of freedom, as well as its concrete
implementat... | [
{
"created": "Fri, 30 Dec 2016 16:19:21 GMT",
"version": "v1"
}
] | 2017-04-25 | [
[
"Oriti",
"Daniele",
""
]
] | This is an introduction to the approach to the extraction of cosmological dynamics from full quantum gravity based on group field theory condensates. We outline its general perspective, which sees cosmology as the hydrodynamics of the fundamental quantum gravity degrees of freedom, as well as its concrete implementatio... |
1007.3973 | Jeffrey Kissel S | LIGO Scientific Collaboration: J. Abadie, B. P. Abbott, R. Abbott, M,
Abernathy, C. Adams, R. Adhikari, P. Ajith, B. Allen, G. Allen, E. Amador
Ceron, R. S. Amin, S. B. Anderson, W. G. Anderson, M. A. Arain, M. Araya, M.
Aronsson, Y. Aso, S. Aston, D. E. Atkinson, P. Aufmuth, C. Aulbert, S. Babak,
P. Baker, S. ... | Calibration of the LIGO Gravitational Wave Detectors in the Fifth
Science Run | 49 pages, 23 figures | Nucl.Instrum.Meth.A624:223-240,2010 | 10.1016/j.nima.2010.07.089 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Laser Interferometer Gravitational Wave Observatory (LIGO) is a network
of three detectors built to detect local perturbations in the space-time metric
from astrophysical sources. These detectors, two in Hanford, WA and one in
Livingston, LA, are power-recycled Fabry-Perot Michelson interferometers. In
their fift... | [
{
"created": "Thu, 22 Jul 2010 18:59:29 GMT",
"version": "v1"
}
] | 2010-12-09 | [
[
"LIGO Scientific Collaboration",
"",
""
],
[
"Abadie",
"J.",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"M",
"",
""
],
[
"Abernathy",
"",
""
],
[
"Adams",
"C.",
""
],
[
"Adhikari",
... | The Laser Interferometer Gravitational Wave Observatory (LIGO) is a network of three detectors built to detect local perturbations in the space-time metric from astrophysical sources. These detectors, two in Hanford, WA and one in Livingston, LA, are power-recycled Fabry-Perot Michelson interferometers. In their fifth ... |
gr-qc/0608096 | Michel Leclerc | M. Leclerc | Noether's theorem, the stress-energy tensor and Hamiltonian constraints | references updated | null | null | null | gr-qc | null | Noether's theorem is reviewed with a particular focus on an intermediate step
between global and local gauge and coordinate transformations, namely linear
transformations. We rederive the well known result that global symmetry leads
to charge conservation (Noether's first theorem), and show that linear symmetry
allow... | [
{
"created": "Sun, 20 Aug 2006 10:36:27 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Aug 2006 13:32:33 GMT",
"version": "v2"
},
{
"created": "Sun, 10 Sep 2006 16:31:04 GMT",
"version": "v3"
},
{
"created": "Tue, 12 Sep 2006 16:19:54 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Leclerc",
"M.",
""
]
] | Noether's theorem is reviewed with a particular focus on an intermediate step between global and local gauge and coordinate transformations, namely linear transformations. We rederive the well known result that global symmetry leads to charge conservation (Noether's first theorem), and show that linear symmetry allows ... |
gr-qc/0609007 | Michael Pfenning | Christopher J. Fewster, Ken D. Olum, Michael J. Pfenning | Averaged null energy condition in spacetimes with boundaries | 12 pages, 1 figure, revTex4 with pstricks figure. Revised to address
concerns of referee. Two theorems added to summarize results. v3: add grant
acknowledgment | Phys.Rev.D75:025007,2007 | 10.1103/PhysRevD.75.025007 | null | gr-qc math-ph math.MP | null | The Averaged Null Energy Condition (ANEC) requires that the average along a
complete null geodesic of the projection of the stress-energy tensor onto the
geodesic tangent vector can never be negative. It is sufficient to rule out
many exotic phenomena in general relativity. Subject to certain conditions, we
show that... | [
{
"created": "Fri, 1 Sep 2006 15:52:23 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Dec 2006 18:45:21 GMT",
"version": "v2"
},
{
"created": "Mon, 10 Sep 2007 19:29:46 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Fewster",
"Christopher J.",
""
],
[
"Olum",
"Ken D.",
""
],
[
"Pfenning",
"Michael J.",
""
]
] | The Averaged Null Energy Condition (ANEC) requires that the average along a complete null geodesic of the projection of the stress-energy tensor onto the geodesic tangent vector can never be negative. It is sufficient to rule out many exotic phenomena in general relativity. Subject to certain conditions, we show that t... |
gr-qc/0407018 | Martin Bojowald | Martin Bojowald and Rafal Swiderski | The Volume Operator in Spherically Symmetric Quantum Geometry | 25 pages, 2 figures | Class.Quant.Grav. 21 (2004) 4881-4900 | 10.1088/0264-9381/21/21/009 | AEI-2004-049 | gr-qc | null | The spherically symmetric volume operator is discussed and all its
eigenstates and eigenvalues are computed. Even though the operator is more
complicated than its homogeneous analog, the spectra are related in the sense
that the larger spherically symmetric volume spectrum adds fine structure to
the homogeneous spect... | [
{
"created": "Mon, 5 Jul 2004 13:38:02 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Jul 2004 14:19:00 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Bojowald",
"Martin",
""
],
[
"Swiderski",
"Rafal",
""
]
] | The spherically symmetric volume operator is discussed and all its eigenstates and eigenvalues are computed. Even though the operator is more complicated than its homogeneous analog, the spectra are related in the sense that the larger spherically symmetric volume spectrum adds fine structure to the homogeneous spectru... |
2211.01766 | Hector O. Silva | Daniela D. Doneva, Fethi M. Ramazano\u{g}lu, Hector O. Silva, Thomas
P. Sotiriou, Stoytcho S. Yazadjiev | Scalarization | 50 pages, 24 figures. Review commissioned by Reviews of Modern
Physics, submitted version, comments welcome | null | null | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | Scalarization is a mechanism that endows strongly self-gravitating bodies,
such as neutron stars and black holes, with a scalar field configuration. It
resembles a phase transition in that the scalar configuration only appears when
a certain quantity that characterizes the compact object, e.g., its compactness
or spi... | [
{
"created": "Thu, 3 Nov 2022 12:45:58 GMT",
"version": "v1"
}
] | 2022-11-04 | [
[
"Doneva",
"Daniela D.",
""
],
[
"Ramazanoğlu",
"Fethi M.",
""
],
[
"Silva",
"Hector O.",
""
],
[
"Sotiriou",
"Thomas P.",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
]
] | Scalarization is a mechanism that endows strongly self-gravitating bodies, such as neutron stars and black holes, with a scalar field configuration. It resembles a phase transition in that the scalar configuration only appears when a certain quantity that characterizes the compact object, e.g., its compactness or spin,... |
0811.3481 | Babak Vakili | Babak Vakili | Cosmology with minimal length uncertainty relations | 11 pages, 4 figures, to appear in IJMPD | Int.J.Mod.Phys.D18:1059-1071,2009 | 10.1142/S0218271809014935 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effects of the existence of a minimal observable length in the
phase space of classical and quantum de Sitter (dS) and Anti de Sitter (AdS)
cosmology. Since this length has been suggested in quantum gravity and string
theory, its effects in the early universe might be expected. Adopting the
existence of ... | [
{
"created": "Fri, 21 Nov 2008 07:09:55 GMT",
"version": "v1"
}
] | 2009-08-25 | [
[
"Vakili",
"Babak",
""
]
] | We study the effects of the existence of a minimal observable length in the phase space of classical and quantum de Sitter (dS) and Anti de Sitter (AdS) cosmology. Since this length has been suggested in quantum gravity and string theory, its effects in the early universe might be expected. Adopting the existence of su... |
0804.3848 | Farook Rahaman | F.Rahaman, M.Kalam and K. A. Rahman | Can electro-magnetic field, anisotropic source and varying $\Lambda$ be
sufficient to produce wormhole spacetime ? | Some changes have been made | Int.J.Theor.Phys.48:1637-1648,2009 | 10.1007/s10773-009-9936-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that solutions of general relativity which allow for
traversable wormholes require the existence of exotic matter (matter that
violates weak or null energy conditions [WEC or NEC]). In this article, we
provide a class of exact solution for Einstein-Maxwell field equations
describing wormholes assumin... | [
{
"created": "Thu, 24 Apr 2008 06:39:11 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Nov 2008 11:30:54 GMT",
"version": "v2"
},
{
"created": "Mon, 17 Nov 2008 10:23:07 GMT",
"version": "v3"
}
] | 2009-05-29 | [
[
"Rahaman",
"F.",
""
],
[
"Kalam",
"M.",
""
],
[
"Rahman",
"K. A.",
""
]
] | It is well known that solutions of general relativity which allow for traversable wormholes require the existence of exotic matter (matter that violates weak or null energy conditions [WEC or NEC]). In this article, we provide a class of exact solution for Einstein-Maxwell field equations describing wormholes assuming ... |
0804.3892 | Chao-Guang Huang | Zhe Chang, Cheng-Bo Guan, Chao-Guang Huang, and Xin Li | Gravitational collapse without a remnant | 9 pages, 9 figures, to appear in Int. J. Theor. Phys | Int.J.Theor.Phys.47:2479-2491,2008 | 10.1007/s10773-008-9681-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the gravitational collapse of a spherically symmetric,
inhomogeneous star, which is described by a perfect fluid with heat flow and
satisfies the equation of state $p=\rho/3$ or $p=C\rho^\ga$ at its center.
Different from the ordinary process of gravitational collapsing, the energy of
the whole star is... | [
{
"created": "Thu, 24 Apr 2008 10:47:05 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Chang",
"Zhe",
""
],
[
"Guan",
"Cheng-Bo",
""
],
[
"Huang",
"Chao-Guang",
""
],
[
"Li",
"Xin",
""
]
] | We investigate the gravitational collapse of a spherically symmetric, inhomogeneous star, which is described by a perfect fluid with heat flow and satisfies the equation of state $p=\rho/3$ or $p=C\rho^\ga$ at its center. Different from the ordinary process of gravitational collapsing, the energy of the whole star is e... |
gr-qc/9303011 | Philip Tuckey | Philip Tuckey | The Construction of Sorkin Triangulations | 5 pages (plus one figure not included, available from author on
request), Plain Tex, no local preprint number (Only change: omitted
"\magnification" command now replaced) | Class.Quant.Grav.10:L109-L113,1993 | 10.1088/0264-9381/10/8/004 | null | gr-qc | null | Some time ago, Sorkin (1975) reported investigations of the time evolution
and initial value problems in Regge calculus, for one triangulation each of the
manifolds $R*S^3$ and $R^4$. Here we display the simple, local characteristic
of those triangulations which underlies the structure found by Sorkin, and
emphasise ... | [
{
"created": "Fri, 5 Mar 1993 17:01:24 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Mar 1993 12:55:32 GMT",
"version": "v2"
}
] | 2010-04-06 | [
[
"Tuckey",
"Philip",
""
]
] | Some time ago, Sorkin (1975) reported investigations of the time evolution and initial value problems in Regge calculus, for one triangulation each of the manifolds $R*S^3$ and $R^4$. Here we display the simple, local characteristic of those triangulations which underlies the structure found by Sorkin, and emphasise it... |
0812.1286 | Abraao Capistrano | A. J. S. Capistrano, P.I. Odon | The Dark Universe Riddle | 39 pages, corrected typos, additional references, no figures | Apeiron (Montreal), v. 16, p. 229-304, 2009 | null | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we review some of the theoretical efforts and experimental
evidences related to Dark matter and Dark energy problems in the universe.
These dilemmas show us how incomplete our knowledge of gravity is, and how our
concepts about the universe must at least be revised. Mainly, on the Wilkinson
Microwave Ani... | [
{
"created": "Sat, 6 Dec 2008 13:24:53 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Apr 2009 00:27:22 GMT",
"version": "v2"
}
] | 2016-05-25 | [
[
"Capistrano",
"A. J. S.",
""
],
[
"Odon",
"P. I.",
""
]
] | In this work we review some of the theoretical efforts and experimental evidences related to Dark matter and Dark energy problems in the universe. These dilemmas show us how incomplete our knowledge of gravity is, and how our concepts about the universe must at least be revised. Mainly, on the Wilkinson Microwave Aniso... |
1508.04614 | Edward Glass | J.P. Krisch and E.N. Glass | Generalized Inheritance | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Generalized inheritance is used with the almost-conformal Killing equation.
Examples are the flat FRW, Kasner, and deSitter metrics. The volume changes in
FRW while transitioning to a stiff fluid are discussed. An inheritance current
is implicit in the generalized condition
| [
{
"created": "Wed, 19 Aug 2015 12:32:45 GMT",
"version": "v1"
}
] | 2015-08-20 | [
[
"Krisch",
"J. P.",
""
],
[
"Glass",
"E. N.",
""
]
] | Generalized inheritance is used with the almost-conformal Killing equation. Examples are the flat FRW, Kasner, and deSitter metrics. The volume changes in FRW while transitioning to a stiff fluid are discussed. An inheritance current is implicit in the generalized condition |
2103.07408 | Shunichiro Kinoshita | Shunichiro Kinoshita | Extension of Kodama vector and quasilocal quantities in
three-dimensional axisymmetric spacetimes | 5 pages; v2: minor changes, reference added; v3: published in PRD | Phys. Rev. D 103, 124042 (2021) | 10.1103/PhysRevD.103.124042 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Spherically symmetric spacetimes admit the so-called Kodama vector, which
provides a locally conserved current and a preferred time even for dynamical
spacetime without any time translation symmetry. A charge associated with this
conserved current leads to a quasilocal mass which agrees with the Misner-Sharp
mass. In... | [
{
"created": "Fri, 12 Mar 2021 17:09:55 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Mar 2021 11:39:42 GMT",
"version": "v2"
},
{
"created": "Fri, 16 Sep 2022 07:25:16 GMT",
"version": "v3"
}
] | 2022-09-19 | [
[
"Kinoshita",
"Shunichiro",
""
]
] | Spherically symmetric spacetimes admit the so-called Kodama vector, which provides a locally conserved current and a preferred time even for dynamical spacetime without any time translation symmetry. A charge associated with this conserved current leads to a quasilocal mass which agrees with the Misner-Sharp mass. In t... |
1206.3496 | Marcus Berg | Marcus Berg, Igor Buchberger, Jonas Enander, Edvard Mortsell, Stefan
Sjors | Growth Histories in Bimetric Massive Gravity | 28 pages + appendix, 11 figures | null | 10.1088/1475-7516/2012/12/021 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform cosmological perturbation theory in Hassan-Rosen bimetric gravity
for general homogeneous and isotropic backgrounds. In the de Sitter
approximation, we obtain decoupled sets of massless and massive scalar
gravitational fluctuations. Matter perturbations then evolve like in Einstein
gravity. We perturb the ... | [
{
"created": "Fri, 15 Jun 2012 15:09:13 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Berg",
"Marcus",
""
],
[
"Buchberger",
"Igor",
""
],
[
"Enander",
"Jonas",
""
],
[
"Mortsell",
"Edvard",
""
],
[
"Sjors",
"Stefan",
""
]
] | We perform cosmological perturbation theory in Hassan-Rosen bimetric gravity for general homogeneous and isotropic backgrounds. In the de Sitter approximation, we obtain decoupled sets of massless and massive scalar gravitational fluctuations. Matter perturbations then evolve like in Einstein gravity. We perturb the fu... |
gr-qc/0307013 | Mihalis Dafermos | Mihalis Dafermos | The interior of charged black holes and the problem of uniqueness in
general relativity | 61 pages, 16 figures, revised version, minor corrections | Comm. Pure Appl. Math. 58 (2005), 0445--0504 | null | null | gr-qc math.AP | null | We consider a spherically symmetric characteristic initial value problem for
the Einstein-Maxwell-scalar field equations. On the initial outgoing
characteristic, the data is assumed to satisfy the Price law decay widely
believed to hold on an event horizon arising from the collapse of an
asymptotically flat Cauchy su... | [
{
"created": "Thu, 3 Jul 2003 14:47:34 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Sep 2003 21:24:20 GMT",
"version": "v2"
},
{
"created": "Sat, 6 Nov 2004 14:34:27 GMT",
"version": "v3"
}
] | 2011-10-13 | [
[
"Dafermos",
"Mihalis",
""
]
] | We consider a spherically symmetric characteristic initial value problem for the Einstein-Maxwell-scalar field equations. On the initial outgoing characteristic, the data is assumed to satisfy the Price law decay widely believed to hold on an event horizon arising from the collapse of an asymptotically flat Cauchy surf... |
1010.1641 | Edward Porter | J\'er\^ome Carr\'e and Edward K. Porter | The Effect of Data Gaps on LISA Galactic Binary Parameter Estimation | Submitted to Classical Quantum Gravity, 11 pages, four figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the last few years there has been an enormous effort in parameter
estimation studies for different sources with the space based gravitational
wave detector, LISA. While these studies have investigated sources of differing
complexity, the one thing they all have in common is they assume continuous
data streams. In ... | [
{
"created": "Fri, 8 Oct 2010 10:03:06 GMT",
"version": "v1"
}
] | 2010-10-11 | [
[
"Carré",
"Jérôme",
""
],
[
"Porter",
"Edward K.",
""
]
] | In the last few years there has been an enormous effort in parameter estimation studies for different sources with the space based gravitational wave detector, LISA. While these studies have investigated sources of differing complexity, the one thing they all have in common is they assume continuous data streams. In re... |
1904.04258 | Steven B. Giddings | Steven B. Giddings, Seth Koren, and Gabriel Trevi\~no | Exploring strong-field deviations from general relativity via
gravitational waves | 20 pages, 9 figures. v2: references and CERN preprint number added | Phys. Rev. D 100, 044005 (2019) | 10.1103/PhysRevD.100.044005 | CERN-TH-2019-075 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Two new observational windows have been opened to strong gravitational
physics: gravitational waves, and very long baseline interferometry. This
suggests observational searches for new phenomena in this regime, and in
particular for those necessary to make black hole evolution consistent with
quantum mechanics. We de... | [
{
"created": "Mon, 8 Apr 2019 18:00:01 GMT",
"version": "v1"
},
{
"created": "Mon, 27 May 2019 18:10:36 GMT",
"version": "v2"
}
] | 2019-08-07 | [
[
"Giddings",
"Steven B.",
""
],
[
"Koren",
"Seth",
""
],
[
"Treviño",
"Gabriel",
""
]
] | Two new observational windows have been opened to strong gravitational physics: gravitational waves, and very long baseline interferometry. This suggests observational searches for new phenomena in this regime, and in particular for those necessary to make black hole evolution consistent with quantum mechanics. We desc... |
1503.02638 | Nathan Johnson-McDaniel | Nathan K. Johnson-McDaniel, Abhay G. Shah, Bernard F. Whiting | Experimental mathematics meets gravitational self-force | 25 pages, 3 figures; version accepted by PRD, including various small
additions and corrections | Phys. Rev. D 92, 044007 (2015) | 10.1103/PhysRevD.92.044007 | ICTS/2015/3 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is now possible to compute linear in mass-ratio terms in the
post-Newtonian (PN) expansion for compact binaries to very high orders using
black hole perturbation theory applied to various invariants. For instance, a
computation of the redshift invariant of a point particle in a circular orbit
about a black hole in... | [
{
"created": "Mon, 9 Mar 2015 19:36:17 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Jul 2015 18:04:21 GMT",
"version": "v2"
}
] | 2015-08-12 | [
[
"Johnson-McDaniel",
"Nathan K.",
""
],
[
"Shah",
"Abhay G.",
""
],
[
"Whiting",
"Bernard F.",
""
]
] | It is now possible to compute linear in mass-ratio terms in the post-Newtonian (PN) expansion for compact binaries to very high orders using black hole perturbation theory applied to various invariants. For instance, a computation of the redshift invariant of a point particle in a circular orbit about a black hole in l... |
gr-qc/9701043 | Kubotani Hiroto | H. Kubotani, T. Uesugi, M. Morikawa, A. Sugamoto (Ochanomizu
University, Tokyo, Japan) | Classicalization of Quantum Fluctuation in Inflationary Universe | 24 pages, Latex, 2 Postscript figures | Prog.Theor.Phys. 98 (1997) 1063-1080 | 10.1143/PTP.98.1063 | OCHA-PP-90 | gr-qc | null | We discuss the classicalization of a quantum state induced by an environment
in the inflationary stage of the universe. The classicalization is necessary
for the homogeneous ground sate to become classical non-homogeneous one
accompanied with the statistical fluctuation, which is a plausible candidate
for the seeds o... | [
{
"created": "Mon, 20 Jan 1997 07:23:27 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Kubotani",
"H.",
"",
"Ochanomizu\n University, Tokyo, Japan"
],
[
"Uesugi",
"T.",
"",
"Ochanomizu\n University, Tokyo, Japan"
],
[
"Morikawa",
"M.",
"",
"Ochanomizu\n University, Tokyo, Japan"
],
[
"Sugamoto",
"A.",
"",
"Ochanomizu\n ... | We discuss the classicalization of a quantum state induced by an environment in the inflationary stage of the universe. The classicalization is necessary for the homogeneous ground sate to become classical non-homogeneous one accompanied with the statistical fluctuation, which is a plausible candidate for the seeds of ... |
gr-qc/0208091 | Hiroshi Kozaki | Hiroshi Kozaki and Ken-ichi Nakao | Volume Expansion of Swiss-Cheese Universe | 22 pages, 7 figures, to be submitted to Phys. Rev. D | Phys.Rev. D66 (2002) 104008 | 10.1103/PhysRevD.66.104008 | null | gr-qc | null | In order to investigate the effect of inhomogeneities on the volume expansion
of the universe, we study modified Swiss-Cheese universe model. Since this
model is an exact solution of Einstein equations, we can get an insight into
non-linear dynamics of inhomogeneous universe from it. We find that
inhomogeneities make... | [
{
"created": "Fri, 30 Aug 2002 13:04:23 GMT",
"version": "v1"
},
{
"created": "Sat, 31 Aug 2002 04:52:41 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Kozaki",
"Hiroshi",
""
],
[
"Nakao",
"Ken-ichi",
""
]
] | In order to investigate the effect of inhomogeneities on the volume expansion of the universe, we study modified Swiss-Cheese universe model. Since this model is an exact solution of Einstein equations, we can get an insight into non-linear dynamics of inhomogeneous universe from it. We find that inhomogeneities make t... |
gr-qc/0308085 | Julien Sylvestre | Julien Sylvestre and Massimo Tinto | Noise characterization for LISA | 9 figures | Phys.Rev. D68 (2003) 102002 | 10.1103/PhysRevD.68.102002 | null | gr-qc | null | We consider the general problem of estimating the inflight LISA noise power
spectra and cross-spectra, which are needed for detecting and estimating the
gravitational wave signals present in the LISA data. For the LISA baseline
design and in the long wavelength limit, we bound the error on all spectrum
estimators tha... | [
{
"created": "Tue, 26 Aug 2003 18:05:31 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Sylvestre",
"Julien",
""
],
[
"Tinto",
"Massimo",
""
]
] | We consider the general problem of estimating the inflight LISA noise power spectra and cross-spectra, which are needed for detecting and estimating the gravitational wave signals present in the LISA data. For the LISA baseline design and in the long wavelength limit, we bound the error on all spectrum estimators that ... |
2407.15804 | Supriya Pan | Sudip Halder, Supriya Pan, Paulo M. S\'a, Tapan Saha | Coupled phantom cosmological model motivated by the warm inflationary
paradigm | 12 pages including references, 3 tables and 4 captioned figures;
comments are welcome! | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | In this article, we investigate a coupled phantom dark-energy cosmological
model in which the coupling term between a phantom scalar field with an
exponential potential and a pressureless dark-matter fluid is motivated by the
warm inflationary paradigm. Using methods of qualitative analysis of dynamical
systems, comp... | [
{
"created": "Mon, 22 Jul 2024 17:16:03 GMT",
"version": "v1"
}
] | 2024-07-23 | [
[
"Halder",
"Sudip",
""
],
[
"Pan",
"Supriya",
""
],
[
"Sá",
"Paulo M.",
""
],
[
"Saha",
"Tapan",
""
]
] | In this article, we investigate a coupled phantom dark-energy cosmological model in which the coupling term between a phantom scalar field with an exponential potential and a pressureless dark-matter fluid is motivated by the warm inflationary paradigm. Using methods of qualitative analysis of dynamical systems, comple... |
2303.04119 | Ernesto Contreras | R. Avalos, P. Bargue\~no and E. Contreras | A static and spherically symmetric hairy black hole in the framework of
the Gravitational Decoupling | null | Fortschr. Phys.2023, 2200171 | 10.1002/prop.202200171 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we construct a static and spherically symmetric black hole
geometry supported by a family of generic mono-parametric sources thorough the
Gravitational Decoupling. The parameter characterizing the matter sector can be
interpreted as hair which cannot be associated to any global charge. Although
the solut... | [
{
"created": "Tue, 7 Mar 2023 18:30:45 GMT",
"version": "v1"
}
] | 2023-03-08 | [
[
"Avalos",
"R.",
""
],
[
"Bargueño",
"P.",
""
],
[
"Contreras",
"E.",
""
]
] | In this work we construct a static and spherically symmetric black hole geometry supported by a family of generic mono-parametric sources thorough the Gravitational Decoupling. The parameter characterizing the matter sector can be interpreted as hair which cannot be associated to any global charge. Although the solutio... |
1408.4956 | Andrea Geralico | Donato Bini, Andrea Geralico, Robert T. Jantzen, Oldrich Semer\'ak | Effect of radiation flux on test particle motion in the Vaidya spacetime | 21 pages, 8 figures; published version | Class. Quantum Grav. 28, 245019 (2011) | 10.1088/0264-9381/28/24/245019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motion of massive test particles in the nonvacuum spherically symmetric
radiating Vaidya spacetime is investigated, allowing for physical interaction
of the particles with the radiation field in terms of which the source
energy-momentum tensor is interpreted. This "Poynting-Robertson-like effect" is
modeled by the us... | [
{
"created": "Thu, 21 Aug 2014 11:03:03 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Jantzen",
"Robert T.",
""
],
[
"Semerák",
"Oldrich",
""
]
] | Motion of massive test particles in the nonvacuum spherically symmetric radiating Vaidya spacetime is investigated, allowing for physical interaction of the particles with the radiation field in terms of which the source energy-momentum tensor is interpreted. This "Poynting-Robertson-like effect" is modeled by the usua... |
gr-qc/9501032 | Hans-Juergen Schmidt | Sabine Kluske | The de Sitter space-time as attractor solution in higher order gravity | 8 pages, LaTeX under using AMS-Symbols, no figures, e-mail via
hjschmi@rz.uni-potsdam.de, to appear in R. Santilli, G. Sardanashvili (Eds.)
"New frontiers in gravitation" Hadronic Press | null | null | Uni Potsdam Math 95/1 | gr-qc | null | For arbitrary high order of the field equation one can always find examples
where the de Sitter space-time is an attractor solution in the set of the
spatially flat Friedmann-Robertson-Walker models.
| [
{
"created": "Wed, 25 Jan 1995 17:26:26 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kluske",
"Sabine",
""
]
] | For arbitrary high order of the field equation one can always find examples where the de Sitter space-time is an attractor solution in the set of the spatially flat Friedmann-Robertson-Walker models. |
2307.05879 | Carlos A. S. Almeida | C. A. S. Almeida and F. C. E. Lima | Effects of quantum fluctuations of the metric on a braneworld | 20 pages, 5 captioned figures. Updated version to match one to appear
in EPJP | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Adopting the premise that the expected value of the quantum fluctuating
metric is linear, i.e., $\langle g^{\mu\nu}\rangle=\alpha g^{\mu\nu}$, we
analyze the modified gravity theory induced by the Einstein-Hilbert action
coupled to a matter field. This approach engenders the $f(R,T)$ gravity used to
investigate the b... | [
{
"created": "Wed, 12 Jul 2023 02:52:15 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Jun 2024 12:24:35 GMT",
"version": "v2"
}
] | 2024-06-18 | [
[
"Almeida",
"C. A. S.",
""
],
[
"Lima",
"F. C. E.",
""
]
] | Adopting the premise that the expected value of the quantum fluctuating metric is linear, i.e., $\langle g^{\mu\nu}\rangle=\alpha g^{\mu\nu}$, we analyze the modified gravity theory induced by the Einstein-Hilbert action coupled to a matter field. This approach engenders the $f(R,T)$ gravity used to investigate the bra... |
2002.02577 | Takafumi Kokubu | Takafumi Kokubu and Tomohiro Harada | Thin-shell wormholes in Einstein and Einstein-Gauss-Bonnet theories of
gravity | 52pages, 17figures, 6tables. This article belongs to the Special
Issue Recent Advances in Wormhole Physics (MDPI). This article is based on
arXiv:1411.5454 [gr-qc] and arXiv:1506.08550 [gr-qc] | Universe 2020, 6(11), 197 | null | RUP-20-4 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review recent works on the possibility for eternal existence of thin-shell
wormholes on Einstein and Einstein-Gauss-Bonnet gravity. We introduce
thin-shell wormholes that are categorized into a class of traversable wormhole
solutions. After that, we discuss stable thin-shell wormholes with
negative-tension branes ... | [
{
"created": "Fri, 7 Feb 2020 01:18:27 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Oct 2020 05:37:22 GMT",
"version": "v2"
},
{
"created": "Fri, 30 Oct 2020 00:15:53 GMT",
"version": "v3"
}
] | 2020-11-02 | [
[
"Kokubu",
"Takafumi",
""
],
[
"Harada",
"Tomohiro",
""
]
] | We review recent works on the possibility for eternal existence of thin-shell wormholes on Einstein and Einstein-Gauss-Bonnet gravity. We introduce thin-shell wormholes that are categorized into a class of traversable wormhole solutions. After that, we discuss stable thin-shell wormholes with negative-tension branes in... |
0705.4372 | Kjell Tangen | Kjell Tangen | Generating Minimally Coupled Einstein-Scalar Field Solutions from Vacuum
Solutions with Arbitrary Cosmological Constant | 23 pages, 4 figures. v2: Replaced figures, more details on the
example solution in section VII.B | null | null | null | gr-qc | null | This paper generalizes two previously known techniques for generating
minimally coupled Einstein-scalar field solutions in 4 dimensions; the Buchdahl
and Fonarev transformations. By applying this solution generation technique,
minimally coupled Einstein-scalar field solutions can be generated from vacuum
solutions wi... | [
{
"created": "Wed, 30 May 2007 15:45:49 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Jun 2007 11:22:27 GMT",
"version": "v2"
}
] | 2007-06-13 | [
[
"Tangen",
"Kjell",
""
]
] | This paper generalizes two previously known techniques for generating minimally coupled Einstein-scalar field solutions in 4 dimensions; the Buchdahl and Fonarev transformations. By applying this solution generation technique, minimally coupled Einstein-scalar field solutions can be generated from vacuum solutions with... |
gr-qc/0305038 | Niall O. Murchadha | Niall O Murchadha | General Relativity from the three dimensional linear group | 4 pages, Revtex 4 | null | null | null | gr-qc | null | This letter describes a novel derivation of general relativity by considering
the (non)self-consistency of theories whose Hamiltonians are constraints. The
constraints, from Hamilton's equations, generate the evolution, while the
evolution, in turn, must preserve the constraints. This closure requirement can
be used ... | [
{
"created": "Sat, 10 May 2003 00:28:21 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Murchadha",
"Niall O",
""
]
] | This letter describes a novel derivation of general relativity by considering the (non)self-consistency of theories whose Hamiltonians are constraints. The constraints, from Hamilton's equations, generate the evolution, while the evolution, in turn, must preserve the constraints. This closure requirement can be used as... |
1409.6816 | Yoshimune Tomikawa | Yoshimune Tomikawa, Tetsuya Shiromizu, Keisuke Izumi | Wormhole on DGP brane | 7 pages, minor corrections, version to appear in PRD | null | 10.1103/PhysRevD.90.126001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze a spacetime structure on a new brane configuration constructed
recently in the Dvali-Gabadadze-Porrati braneworld context. The brane, embedded
on a five-dimensional bubble of nothing, has a wormhole structure. It is an
exact solution without any matter fields, and thus the energy conditions for
matter fiel... | [
{
"created": "Wed, 24 Sep 2014 04:11:20 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Nov 2014 07:15:05 GMT",
"version": "v2"
}
] | 2015-06-23 | [
[
"Tomikawa",
"Yoshimune",
""
],
[
"Shiromizu",
"Tetsuya",
""
],
[
"Izumi",
"Keisuke",
""
]
] | We analyze a spacetime structure on a new brane configuration constructed recently in the Dvali-Gabadadze-Porrati braneworld context. The brane, embedded on a five-dimensional bubble of nothing, has a wormhole structure. It is an exact solution without any matter fields, and thus the energy conditions for matter fields... |
1108.0078 | Miguel Vazquez-Mozo | Luis Alvarez-Gaume, Ehsan Hatefi | Critical Collapse in the Axion-Dilaton System in Diverse Dimensions | LaTeX, 10 pages, no figures | Class. Quantum Grav. 29 (2012) 025006 | 10.1088/0264-9381/29/2/025006 | CERN-PH-TH/2011-167 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the gravitational collapse of the axion-dilaton system suggested by
type IIB string theory in dimensions ranging from four to ten. We extend
previous analysis concerning the role played by the global SL(2,R) symmetry and
we evaluate the Choptuik exponents in the elliptic case.
| [
{
"created": "Sat, 30 Jul 2011 15:17:50 GMT",
"version": "v1"
}
] | 2011-12-30 | [
[
"Alvarez-Gaume",
"Luis",
""
],
[
"Hatefi",
"Ehsan",
""
]
] | We study the gravitational collapse of the axion-dilaton system suggested by type IIB string theory in dimensions ranging from four to ten. We extend previous analysis concerning the role played by the global SL(2,R) symmetry and we evaluate the Choptuik exponents in the elliptic case. |
2009.01088 | Jorge Bellorin | J. Bellorin, C. Borquez and B. Droguett | Asymptotic flatness and nonflat solutions in the critical 2+1 Horava
theory | This version matches the version published in journal. arXiv admin
note: substantial text overlap with arXiv:2006.08693 | Gen. Rel. Grav. 53 (2021) 2, 19 | 10.1007/s10714-021-02793-4 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Horava theory in 2+1 dimensions can be formulated at a critical point in
the space of coupling constants where it has no local degrees of freedom. This
suggests that this critical case could share many features with 2+1 general
relativity, in particular its large-distance effective action that is of second
order ... | [
{
"created": "Tue, 1 Sep 2020 12:03:57 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Mar 2021 16:25:54 GMT",
"version": "v2"
}
] | 2021-03-24 | [
[
"Bellorin",
"J.",
""
],
[
"Borquez",
"C.",
""
],
[
"Droguett",
"B.",
""
]
] | The Horava theory in 2+1 dimensions can be formulated at a critical point in the space of coupling constants where it has no local degrees of freedom. This suggests that this critical case could share many features with 2+1 general relativity, in particular its large-distance effective action that is of second order in... |
gr-qc/9805091 | Valter Moretti | Valter Moretti (Math. Dept. Trento University) | Local $\zeta$-function techniques vs point-splitting procedure: a few
rigorous results | 40 pages, latex, no figures, shortened version, some previous
Comments and minor errors corrected, final version accepted for publication
in Commun. Math. Phys | Commun.Math.Phys. 201 (1999) 327-363 | 10.1007/s002200050558 | null | gr-qc hep-th math-ph math.MP | null | Some general properties of local $\zeta$-function procedures to renormalize
some quantities in $D$-dimensional (Euclidean) Quantum Field Theory in curved
background are rigorously discussed for positive scalar operators $-\Delta +
V(x)$ in general closed $D$-manifolds, and a few comments are given for
nonclosed manif... | [
{
"created": "Tue, 26 May 1998 12:31:12 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Jun 1998 13:33:59 GMT",
"version": "v2"
},
{
"created": "Thu, 27 Aug 1998 14:43:30 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Moretti",
"Valter",
"",
"Math. Dept. Trento University"
]
] | Some general properties of local $\zeta$-function procedures to renormalize some quantities in $D$-dimensional (Euclidean) Quantum Field Theory in curved background are rigorously discussed for positive scalar operators $-\Delta + V(x)$ in general closed $D$-manifolds, and a few comments are given for nonclosed manifol... |
1303.0912 | Vladimir Dzhunushaliev | Ascar K. Aringazin and Vladimir Dzhunushaliev | Decomposed Finsler geometry: decomposed Finsler gravity and physical
applications | 8 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Special class of Finsler metrics that can be decomposed to the product of two
Riemannian metrics is considered. Based on such decomposition a new kind of
Finsler gravity is suggested. Physical applications of Finsler decomposed
metric are considered.
| [
{
"created": "Tue, 5 Mar 2013 02:51:04 GMT",
"version": "v1"
}
] | 2013-03-06 | [
[
"Aringazin",
"Ascar K.",
""
],
[
"Dzhunushaliev",
"Vladimir",
""
]
] | Special class of Finsler metrics that can be decomposed to the product of two Riemannian metrics is considered. Based on such decomposition a new kind of Finsler gravity is suggested. Physical applications of Finsler decomposed metric are considered. |
0902.0190 | Reiner Hedrich | Reiner Hedrich | Quantum Gravity: Has Spacetime Quantum Properties? | 31 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The incompatibility between GR and QM is generally seen as a sufficient
motivation for the development of a theory of Quantum Gravity. If - so a
typical argumentation - QM gives a universally valid basis for the description
of all natural systems, then the gravitational field should have quantum
properties. Together ... | [
{
"created": "Mon, 2 Feb 2009 02:34:51 GMT",
"version": "v1"
}
] | 2009-02-03 | [
[
"Hedrich",
"Reiner",
""
]
] | The incompatibility between GR and QM is generally seen as a sufficient motivation for the development of a theory of Quantum Gravity. If - so a typical argumentation - QM gives a universally valid basis for the description of all natural systems, then the gravitational field should have quantum properties. Together wi... |
1606.07889 | Maurizio Gasperini | M. Gasperini | Observable gravitational waves in pre-big bang cosmology: an update | 14 pages, 6 figures. Typos corrected, references updated, a few
comments added | JCAP 12 (2016) 010 | 10.1088/1475-7516/2016/12/010 | BA-TH/706-16 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the light of the recent results concerning CMB observations and GW
detection we address the question of whether it is possible, in a
self-consistent inflationary framework, to simultaneously generate a spectrum
of scalar metric perturbations in agreement with Planck data and a stochastic
background of primordial g... | [
{
"created": "Sat, 25 Jun 2016 09:07:58 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Nov 2016 22:50:37 GMT",
"version": "v2"
},
{
"created": "Wed, 23 Nov 2016 16:49:27 GMT",
"version": "v3"
}
] | 2016-12-08 | [
[
"Gasperini",
"M.",
""
]
] | In the light of the recent results concerning CMB observations and GW detection we address the question of whether it is possible, in a self-consistent inflationary framework, to simultaneously generate a spectrum of scalar metric perturbations in agreement with Planck data and a stochastic background of primordial gra... |
2303.17767 | Maxime Van de Moortel | Federico Pasqualotto and Yakov Shlapentokh-Rothman and Maxime Van de
Moortel | The asymptotics of massive fields on stationary spherically symmetric
black holes for all angular momenta | Version 2, 41 pages. Minor modifications | null | null | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the massive scalar field equation $\Box_g \phi = m^2 \phi$ on a
stationary and spherically symmetric black hole $g$ (including in particular
the Schwarzschild and Reissner--Nordstr\"om black holes in the full
sub-extremal range) for solutions $\phi$ projected on a fixed spherical
harmonic. Our problem involv... | [
{
"created": "Fri, 31 Mar 2023 02:09:53 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Jan 2024 01:03:01 GMT",
"version": "v2"
}
] | 2024-01-08 | [
[
"Pasqualotto",
"Federico",
""
],
[
"Shlapentokh-Rothman",
"Yakov",
""
],
[
"Van de Moortel",
"Maxime",
""
]
] | We study the massive scalar field equation $\Box_g \phi = m^2 \phi$ on a stationary and spherically symmetric black hole $g$ (including in particular the Schwarzschild and Reissner--Nordstr\"om black holes in the full sub-extremal range) for solutions $\phi$ projected on a fixed spherical harmonic. Our problem involves... |
1406.6891 | Edward Porter | Edward K. Porter | The Challenges in Gravitational Wave Astronomy for Space-Based Detectors | 12 pages. Plenary presentation to appear in the Proceedings of the
Sant Cugat Forum on Astrophysics, Sant Cugat, April 22-25, 2014 | null | 10.1007/978-3-319-10488-1_23 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Gravitational Wave (GW) universe contains a wealth of sources which, with
the proper treatment, will open up the universe as never before. By observing
massive black hole binaries to high redshifts, we should begin to explore the
formation process of seed black holes and track galactic evolution to the
present da... | [
{
"created": "Thu, 26 Jun 2014 14:02:11 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Porter",
"Edward K.",
""
]
] | The Gravitational Wave (GW) universe contains a wealth of sources which, with the proper treatment, will open up the universe as never before. By observing massive black hole binaries to high redshifts, we should begin to explore the formation process of seed black holes and track galactic evolution to the present day.... |
1509.06806 | Julio Cesar Fabris | J.C. Fabris, O.F. Piattella, D.C. Rodrigues, B. Chauvineau, M.H.
Daouda | Introducing quantum effects in classical theories | Latex file, 10 pages. To appear in the proceedings of the 9th
Friedmann Seminar, St. Petersburg, Russia, june 21-27, 2015 | null | 10.1142/S0217751X16410086 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we explore two different ways of implementing quantum effects
in a classical structure. The first one is through an external field. The other
one is modifying the classical conservation laws. In both cases, the
consequences for the description of the evolution of the universe are
discussed.
| [
{
"created": "Tue, 22 Sep 2015 23:11:30 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Sep 2015 19:24:45 GMT",
"version": "v2"
},
{
"created": "Mon, 5 Oct 2015 12:58:22 GMT",
"version": "v3"
}
] | 2016-02-03 | [
[
"Fabris",
"J. C.",
""
],
[
"Piattella",
"O. F.",
""
],
[
"Rodrigues",
"D. C.",
""
],
[
"Chauvineau",
"B.",
""
],
[
"Daouda",
"M. H.",
""
]
] | In this paper, we explore two different ways of implementing quantum effects in a classical structure. The first one is through an external field. The other one is modifying the classical conservation laws. In both cases, the consequences for the description of the evolution of the universe are discussed. |
0911.2486 | Sergio Dain | Sergio Dain | Angular momentum-mass inequality for axisymmetric black holes | 7 pages, 1 figure | New Trends in Mathematical Physics, Selected contributions of the
XVth International Congress on Mathematical Physics. Sidoravicius, Vladas
(Ed.), Springer, 2009 | 10.1007/978-90-481-2810-5_12 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In these notes we describe recent results concerning the inequality $m\geq
\sqrt{|J|}$ for axially symmetric black holes.
| [
{
"created": "Thu, 12 Nov 2009 22:01:33 GMT",
"version": "v1"
}
] | 2009-11-16 | [
[
"Dain",
"Sergio",
""
]
] | In these notes we describe recent results concerning the inequality $m\geq \sqrt{|J|}$ for axially symmetric black holes. |
gr-qc/9508051 | Atsushi Higuchi | C.J. Fewster and A. Higuchi | Quantum Field Theory on Certain Non-Globally Hyperbolic Spacetimes | 14 pages, latex, one figure (incorporated in latex source) | Class.Quant.Grav.13:51-62,1996 | 10.1088/0264-9381/13/1/006 | BUTP-95/31 | gr-qc | null | We study real linear scalar field theory on two simple non-globally
hyperbolic spacetimes containing closed timelike curves within the framework
proposed by Kay for algebraic quantum field theory on non-globally hyperbolic
spacetimes. In this context, a spacetime (M,g) is said to be `F-quantum
compatible' with a fiel... | [
{
"created": "Thu, 24 Aug 1995 15:49:44 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Fewster",
"C. J.",
""
],
[
"Higuchi",
"A.",
""
]
] | We study real linear scalar field theory on two simple non-globally hyperbolic spacetimes containing closed timelike curves within the framework proposed by Kay for algebraic quantum field theory on non-globally hyperbolic spacetimes. In this context, a spacetime (M,g) is said to be `F-quantum compatible' with a field ... |
gr-qc/0111010 | Mustapha Ishak | Roberto A. Sussman, Mustapha Ishak | Adiabatic models of the cosmological radiative era | 19 pages revtex4, 10 figures. Final form to appear in Gen. Rel. Grav | Gen.Rel.Grav. 34 (2002) 1589-1616 | null | null | gr-qc | null | We consider a generalization of the Lemaitre-Tolman-Bondi (LTB) solutions by
keeping the LTB metric but replacing its dust matter source by an imperfect
fluid with anisotropic pressure $\Pi_{ab} $. Assuming that total matter-energy
density $\rho$ is the sum of a rest mass term, $\rhom$, plus a radiation
$\rhor=3p$ de... | [
{
"created": "Mon, 5 Nov 2001 04:50:08 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Apr 2002 15:49:39 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Sussman",
"Roberto A.",
""
],
[
"Ishak",
"Mustapha",
""
]
] | We consider a generalization of the Lemaitre-Tolman-Bondi (LTB) solutions by keeping the LTB metric but replacing its dust matter source by an imperfect fluid with anisotropic pressure $\Pi_{ab} $. Assuming that total matter-energy density $\rho$ is the sum of a rest mass term, $\rhom$, plus a radiation $\rhor=3p$ dens... |
gr-qc/9412004 | null | S. R. Vatsya | Mechanics of a Particle in a Gauge Field | A new Gauge theoretical description of Quantum Mechanics. 30 pages,
LaTeX, To appear in Can. J. Phys. Corr: 80 Char. lines | Can.J.Phys. 73 (1995) 85-95 | 10.1139/p95-013 | null | gr-qc | null | The action principle is frequently used to derive the classical equations of
motion. The action may also be used to associate group elements with curves in
the space-time manifold, similar to the gauge transformations. The action
principle is shown here to be an equivalence relation between the infinitesimal
elements... | [
{
"created": "Thu, 1 Dec 1994 18:53:26 GMT",
"version": "v1"
},
{
"created": "Sun, 4 Dec 1994 00:24:17 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Vatsya",
"S. R.",
""
]
] | The action principle is frequently used to derive the classical equations of motion. The action may also be used to associate group elements with curves in the space-time manifold, similar to the gauge transformations. The action principle is shown here to be an equivalence relation between the infinitesimal elements s... |
gr-qc/9312038 | Sergey Tertychniy | S.Tertychniy | On the alternative description of complex holomorphic and Lorentz
geometries in four dimensions | 29 pages, uuencoded compressed PostScript, no local # | null | null | null | gr-qc | null | The equivalence of a conformal metric on 4-dimensional space-time and a local
field of 3-dimensional subspaces of the space of 2-forms over space-time is
discussed and the basic notion of transection is introduced. Corresponding
relation is spread to the metric case in terms of notion of normalized ordered
oriented t... | [
{
"created": "Wed, 29 Dec 1993 18:29:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Tertychniy",
"S.",
""
]
] | The equivalence of a conformal metric on 4-dimensional space-time and a local field of 3-dimensional subspaces of the space of 2-forms over space-time is discussed and the basic notion of transection is introduced. Corresponding relation is spread to the metric case in terms of notion of normalized ordered oriented tra... |
1710.02185 | LVC Publications | The LIGO Scientific Collaboration and the Virgo Collaboration: B. P.
Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C.
Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M.
Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, B. Allen,
A. Allocca, P. A... | Effects of Data Quality Vetoes on a Search for Compact Binary
Coalescences in Advanced LIGO's First Observing Run | 27 pages, 13 figures, published version | Class. Quantum Grav. 35 065010 (2018) | 10.1088/1361-6382/aaaafa | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The first observing run of Advanced LIGO spanned 4 months, from September 12,
2015 to January 19, 2016, during which gravitational waves were directly
detected from two binary black hole systems, namely GW150914 and GW151226.
Confident detection of gravitational waves requires an understanding of
instrumental transie... | [
{
"created": "Thu, 5 Oct 2017 19:18:51 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Oct 2017 16:26:26 GMT",
"version": "v2"
},
{
"created": "Tue, 7 Nov 2017 22:45:22 GMT",
"version": "v3"
},
{
"created": "Tue, 8 Oct 2019 13:29:33 GMT",
"version": "v4"
}
] | 2019-10-09 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Abernathy",
"M. R.",
""
],
[
"Acernese",
"F... | The first observing run of Advanced LIGO spanned 4 months, from September 12, 2015 to January 19, 2016, during which gravitational waves were directly detected from two binary black hole systems, namely GW150914 and GW151226. Confident detection of gravitational waves requires an understanding of instrumental transient... |
2212.10491 | Bernardo Araneda | Bernardo Araneda | Twistor quadrics and black holes | 7 pages | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | A simple procedure is given to construct curved, non-self-dual (complexified)
Kaehler metrics on space-time in terms of deformations of holomorphic quadric
surfaces in flat twistor space. Imposing Lorentzian reality conditions, the
Schwarzschild, Kerr, and Plebanski-Demianski space-times (among others) are
derived as... | [
{
"created": "Tue, 20 Dec 2022 18:06:31 GMT",
"version": "v1"
}
] | 2022-12-21 | [
[
"Araneda",
"Bernardo",
""
]
] | A simple procedure is given to construct curved, non-self-dual (complexified) Kaehler metrics on space-time in terms of deformations of holomorphic quadric surfaces in flat twistor space. Imposing Lorentzian reality conditions, the Schwarzschild, Kerr, and Plebanski-Demianski space-times (among others) are derived as e... |
2002.00042 | Mert Mangut | O. Gurtug, M. Mangut and M. Halilsoy | Gravitational Lensing in Rotating and Twisting Universes | null | Astroparticle Physics, Volume 128, March 2021, 102558 | 10.1016/j.astropartphys.2021.102558 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational lensing caused by the gravitational field of massive objects
has been studied and acknowledged for a long period of time. In this paper,
however, we propose a different mechanism where the bending of light stems from
the non-linear interaction of gravitational, electromagnetic and axion waves
that creat... | [
{
"created": "Fri, 31 Jan 2020 20:04:54 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Aug 2020 18:21:26 GMT",
"version": "v2"
}
] | 2021-01-21 | [
[
"Gurtug",
"O.",
""
],
[
"Mangut",
"M.",
""
],
[
"Halilsoy",
"M.",
""
]
] | Gravitational lensing caused by the gravitational field of massive objects has been studied and acknowledged for a long period of time. In this paper, however, we propose a different mechanism where the bending of light stems from the non-linear interaction of gravitational, electromagnetic and axion waves that creates... |
2012.00549 | Ayyesha Ahmed | Ayyesha K. Ahmed and Azad A. Siddiqui | Weak Cosmic Censorship by Overspinning the Kerr-Newman-Kasuya Black Hole
with Test Particle | 4 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We check the weak cosmic censorship conjecture by attempting to overspin the
Kerr-Newman-Kasuya black hole with test particle. The study suggests that the
Kerr-Newman-Kasuya black hole can be over-spun showing the violation of cosmic
censorship conjecture.
| [
{
"created": "Wed, 25 Nov 2020 08:30:14 GMT",
"version": "v1"
}
] | 2020-12-02 | [
[
"Ahmed",
"Ayyesha K.",
""
],
[
"Siddiqui",
"Azad A.",
""
]
] | We check the weak cosmic censorship conjecture by attempting to overspin the Kerr-Newman-Kasuya black hole with test particle. The study suggests that the Kerr-Newman-Kasuya black hole can be over-spun showing the violation of cosmic censorship conjecture. |
1707.02399 | Claudio Cremaschini | Claudio Cremaschini and Massimo Tessarotto | Quantum-wave equation and Heisenberg inequalities of covariant quantum
gravity | Entropy Journal Special Issue: Advances in Relativistic Statistical
Mechanics | Entropy 19, 339 (2017) | 10.3390/e19070339 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Key aspects of the manifestly-covariant theory of quantum gravity
(Cremaschini and Tessarotto 2015-2017) are investigated. These refer, first, to
the establishment of the 4-scalar, manifestly-covariant evolution quantum wave
equation, denoted as covariant quantum gravity (CQG) wave equation, which
advances the quantu... | [
{
"created": "Sat, 8 Jul 2017 05:58:28 GMT",
"version": "v1"
}
] | 2017-07-11 | [
[
"Cremaschini",
"Claudio",
""
],
[
"Tessarotto",
"Massimo",
""
]
] | Key aspects of the manifestly-covariant theory of quantum gravity (Cremaschini and Tessarotto 2015-2017) are investigated. These refer, first, to the establishment of the 4-scalar, manifestly-covariant evolution quantum wave equation, denoted as covariant quantum gravity (CQG) wave equation, which advances the quantum ... |
1412.0005 | Pierre-Henri Chavanis | Pierre-Henri Chavanis | Relativistic self-gravitating Bose-Einstein condensates and cold baryons
with a stiff equation of state | null | Eur. Phys. J. Plus 130, 181 (2015) | 10.1140/epjp/i2015-15181-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Because of their superfluid properties, some compact astrophysical objects
such as neutron stars may contain a significant part of their matter in the
form of a Bose-Einstein condensate (BEC). We consider a partially-relativistic
model of self-gravitating BECs where the relation between the pressure and the
rest-mass... | [
{
"created": "Thu, 27 Nov 2014 16:14:37 GMT",
"version": "v1"
}
] | 2016-07-12 | [
[
"Chavanis",
"Pierre-Henri",
""
]
] | Because of their superfluid properties, some compact astrophysical objects such as neutron stars may contain a significant part of their matter in the form of a Bose-Einstein condensate (BEC). We consider a partially-relativistic model of self-gravitating BECs where the relation between the pressure and the rest-mass d... |
2101.08617 | Jan Ambjorn | J. Ambjorn, Z. Drogosz, J. Gizbert-Studnicki, A. G\"orlich, J.
Jurkiewicz and D. N\'emeth | Cosmic voids and filaments from quantum gravity | 4 pages, 2 figures | null | 10.1140/epjc/s10052-021-09468-z | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using computer simulations we study the geometry of a typical quantum
universe, i.e. the geometry one might expect before a possible period of
inflation. We display it using coordinates defined by means of four classical
scalar fields satisfying the Laplace equation with non-trivial boundary
conditions. The field con... | [
{
"created": "Thu, 21 Jan 2021 14:00:06 GMT",
"version": "v1"
}
] | 2021-09-01 | [
[
"Ambjorn",
"J.",
""
],
[
"Drogosz",
"Z.",
""
],
[
"Gizbert-Studnicki",
"J.",
""
],
[
"Görlich",
"A.",
""
],
[
"Jurkiewicz",
"J.",
""
],
[
"Németh",
"D.",
""
]
] | Using computer simulations we study the geometry of a typical quantum universe, i.e. the geometry one might expect before a possible period of inflation. We display it using coordinates defined by means of four classical scalar fields satisfying the Laplace equation with non-trivial boundary conditions. The field confi... |
1112.1341 | Felipe Falciano | F. T. Falciano and E. Goulart | A new symmetry of the relativistic wave equation | 4 pages | Class.Quant.Grav. 29 (2012) 085011 | 10.1088/0264-9381/29/8/085011 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we show that there exists a new symmetry in the relativistic
wave equation for a scalar field in arbitrary dimensions. This symmetry is
related to redefinitions of the metric tensor which implement a map between
non-equivalent manifolds. It is possible to interpret these transformations as
a generalizat... | [
{
"created": "Tue, 6 Dec 2011 16:38:41 GMT",
"version": "v1"
}
] | 2012-08-29 | [
[
"Falciano",
"F. T.",
""
],
[
"Goulart",
"E.",
""
]
] | In this paper we show that there exists a new symmetry in the relativistic wave equation for a scalar field in arbitrary dimensions. This symmetry is related to redefinitions of the metric tensor which implement a map between non-equivalent manifolds. It is possible to interpret these transformations as a generalizatio... |
1909.12607 | Bibhas Majhi Ranjan | Avijit Bera, Subir Ghosh, Bibhas Ranjan Majhi | Hawking radiation in a non-covariant frame: the Jacobi metric approach | Typos corrected, to appear in Eur. Phys. J. Plus | Eur. Phys. J. Plus 135 (2020) 670 | 10.1140/epjp/s13360-020-00693-1 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present paper deals with a reformulation of the derivation of Hawking
temperature for static and stationary black holes. In contrast to the
conventional approach, where the covariant form of the metrics are used, we use
the manifestly non-covariant Jacobi metric for the black holes in question. In
the latter, a r... | [
{
"created": "Fri, 27 Sep 2019 10:37:35 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Aug 2020 06:58:16 GMT",
"version": "v2"
}
] | 2020-08-24 | [
[
"Bera",
"Avijit",
""
],
[
"Ghosh",
"Subir",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
]
] | The present paper deals with a reformulation of the derivation of Hawking temperature for static and stationary black holes. In contrast to the conventional approach, where the covariant form of the metrics are used, we use the manifestly non-covariant Jacobi metric for the black holes in question. In the latter, a res... |
gr-qc/0405138 | Chengmin Zhang | C.M. Zhang | Dirac Spin Precession in Kerr Spacetime by the parallelism description | 6 pages | Commun.Theor.Phys. 44 (2005) 279-286 | null | null | gr-qc | null | In the framework of parallelism general relativity (PGR), the Dirac particle
spin precession in the rotational gravitational field is studied. In terms of
the equivalent tetrad of Kerr frame, we investigate the torsion axial-vector
spin coupling in PGR. In the case of the weak field and slow rotation
approximation, w... | [
{
"created": "Fri, 28 May 2004 14:22:08 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Zhang",
"C. M.",
""
]
] | In the framework of parallelism general relativity (PGR), the Dirac particle spin precession in the rotational gravitational field is studied. In terms of the equivalent tetrad of Kerr frame, we investigate the torsion axial-vector spin coupling in PGR. In the case of the weak field and slow rotation approximation, we ... |
1110.6794 | Gustav Holzegel | Gustav Holzegel and Jacques Smulevici | Decay properties of Klein-Gordon fields on Kerr-AdS spacetimes | 47 pages, 1 figure; typos corrected, minor improvement of the results | null | null | null | gr-qc hep-th math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper investigates the decay properties of solutions to the massive
linear wave equation $\Box_g \psi + \frac{{\alpha}}{l^2} \psi =0$ for $g$ the
metric of a Kerr-AdS spacetime satisfying $|a|l<r_+^2$ and $\alpha<9/4$
satisfying the Breitenlohner Freedman bound. We prove that the non-degenerate
energy of $\psi$ ... | [
{
"created": "Mon, 31 Oct 2011 13:49:19 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Mar 2013 13:21:28 GMT",
"version": "v2"
}
] | 2013-03-26 | [
[
"Holzegel",
"Gustav",
""
],
[
"Smulevici",
"Jacques",
""
]
] | This paper investigates the decay properties of solutions to the massive linear wave equation $\Box_g \psi + \frac{{\alpha}}{l^2} \psi =0$ for $g$ the metric of a Kerr-AdS spacetime satisfying $|a|l<r_+^2$ and $\alpha<9/4$ satisfying the Breitenlohner Freedman bound. We prove that the non-degenerate energy of $\psi$ wi... |
2110.14452 | Maxime Jacquet | Maxime J Jacquet, Luca Giacomelli, Quentin Valnais, Malo Joly,
Ferdinand Claude, Elisabeth Giacobino, Quentin Glorieux, Iacopo Carusotto and
Alberto Bramati | Quantum vacuum excitation of a quasi-normal mode in an analog model of
black hole spacetime | Version accepted for publication | null | 10.1103/PhysRevLett.130.111501 | null | gr-qc quant-ph | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Vacuum quantum fluctuations near horizons are known to yield correlated
emission by the Hawking effect. We use a driven-dissipative quantum fluid of
microcavity polaritons as an analog model of a quantum field theory on a
black-hole spacetime and numerically calculate correlated emission. We show
that, in addition to... | [
{
"created": "Wed, 27 Oct 2021 14:16:12 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Mar 2022 10:40:49 GMT",
"version": "v2"
},
{
"created": "Tue, 28 Feb 2023 08:46:57 GMT",
"version": "v3"
}
] | 2023-03-17 | [
[
"Jacquet",
"Maxime J",
""
],
[
"Giacomelli",
"Luca",
""
],
[
"Valnais",
"Quentin",
""
],
[
"Joly",
"Malo",
""
],
[
"Claude",
"Ferdinand",
""
],
[
"Giacobino",
"Elisabeth",
""
],
[
"Glorieux",
"Quentin",
""
... | Vacuum quantum fluctuations near horizons are known to yield correlated emission by the Hawking effect. We use a driven-dissipative quantum fluid of microcavity polaritons as an analog model of a quantum field theory on a black-hole spacetime and numerically calculate correlated emission. We show that, in addition to t... |
1408.2589 | Juan Carlos Degollado | Juan Carlos Degollado and Carlos A. R. Herdeiro | Wiggly tails: a gravitational wave signature of massive fields around
black holes | 6 pages, 4 figures | Phys. Rev. D 90, 065019 (2014) | 10.1103/PhysRevD.90.065019 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Massive fields can exist in long-lived configurations around black holes. We
examine how the gravitational wave signal of a perturbed black hole is affected
by such `dirtiness' within linear theory. As a concrete example, we consider
the gravitational radiation emitted by the infall of a massive scalar field
into a S... | [
{
"created": "Tue, 12 Aug 2014 00:29:43 GMT",
"version": "v1"
}
] | 2014-09-24 | [
[
"Degollado",
"Juan Carlos",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
]
] | Massive fields can exist in long-lived configurations around black holes. We examine how the gravitational wave signal of a perturbed black hole is affected by such `dirtiness' within linear theory. As a concrete example, we consider the gravitational radiation emitted by the infall of a massive scalar field into a Sch... |
2006.06734 | Carolina Benone | Leandro A. Oliveira, Carolina L. Benone, Amanda L. Almeida, Lu\'is C.
B. Crispino | Analytical investigation of wave absorption by a rotating black hole
analogue | 13 pages, 3 figures, Contribution to Selected Papers of the Fifth
Amazonian Symposium on Physics, accepted in IJMPD | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Perturbations in a draining vortex can be described analytically in terms of
confluent Heun functions. In the context of analogue models of gravity in ideal
fluids, we investigate analytically the absorption length of waves in a
draining bathtub, a rotating black hole analogue, using confluent Heun
functions. We comp... | [
{
"created": "Thu, 11 Jun 2020 18:49:41 GMT",
"version": "v1"
}
] | 2020-06-15 | [
[
"Oliveira",
"Leandro A.",
""
],
[
"Benone",
"Carolina L.",
""
],
[
"Almeida",
"Amanda L.",
""
],
[
"Crispino",
"Luís C. B.",
""
]
] | Perturbations in a draining vortex can be described analytically in terms of confluent Heun functions. In the context of analogue models of gravity in ideal fluids, we investigate analytically the absorption length of waves in a draining bathtub, a rotating black hole analogue, using confluent Heun functions. We compar... |
1802.06135 | Florian Hopfm\"uller | Florian Hopfm\"uller and Laurent Freidel | Null Conservation Laws for Gravity | 26 pages + appendices, comments welcome | Phys. Rev. D 97, 124029 (2018) | 10.1103/PhysRevD.97.124029 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a full analysis of the conservation along null surfaces of
generalized energy and super-momenta, for gravitational systems enclosed by a
finite boundary. In particular we interpret the conservation equations in a
canonical manner, revealing a notion of symplectic potential and a boundary
current intrinsic to ... | [
{
"created": "Fri, 16 Feb 2018 21:50:09 GMT",
"version": "v1"
}
] | 2018-06-20 | [
[
"Hopfmüller",
"Florian",
""
],
[
"Freidel",
"Laurent",
""
]
] | We give a full analysis of the conservation along null surfaces of generalized energy and super-momenta, for gravitational systems enclosed by a finite boundary. In particular we interpret the conservation equations in a canonical manner, revealing a notion of symplectic potential and a boundary current intrinsic to nu... |
2111.05507 | Huiquan Li | Huiquan Li | Hawking-like radiation of charged particles via tunneling across the
lightcylinder of a rotating magnetosphere | 7 pages, no figure | null | 10.1016/j.physletb.2021.136816 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In rotating magnetospheres planted on compact objects, there usually exist
lightcylinders (LC), beyond which the rotation speed of the magnetic field
lines exceeds the speed of light. The LC is a close analog to the horizon in
gravity, and is a casual boundary for charged particles that are restricted to
move along t... | [
{
"created": "Wed, 10 Nov 2021 03:13:50 GMT",
"version": "v1"
}
] | 2022-01-05 | [
[
"Li",
"Huiquan",
""
]
] | In rotating magnetospheres planted on compact objects, there usually exist lightcylinders (LC), beyond which the rotation speed of the magnetic field lines exceeds the speed of light. The LC is a close analog to the horizon in gravity, and is a casual boundary for charged particles that are restricted to move along the... |
1801.08162 | Carlos O. Lousto | James Healy and Carlos O. Lousto | The hangup effect in unequal mass binary black hole mergers and further
studies of their gravitational radiation and remnant properties | 26 pages, 13 figures | Phys. Rev. D 97, 084002 (2018) | 10.1103/PhysRevD.97.084002 | null | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the results of 74 new simulations of nonprecessing spinning black
hole binaries with mass ratios $q=m_1/m_2$ in the range $1/7\leq q\leq1$ and
individual spins covering the parameter space $-0.95\leq\alpha_{1,2}\leq0.95$
with one runs with spins of $\pm0.95$. We supplement those runs with 107
previous simu... | [
{
"created": "Wed, 24 Jan 2018 19:45:08 GMT",
"version": "v1"
}
] | 2018-04-11 | [
[
"Healy",
"James",
""
],
[
"Lousto",
"Carlos O.",
""
]
] | We present the results of 74 new simulations of nonprecessing spinning black hole binaries with mass ratios $q=m_1/m_2$ in the range $1/7\leq q\leq1$ and individual spins covering the parameter space $-0.95\leq\alpha_{1,2}\leq0.95$ with one runs with spins of $\pm0.95$. We supplement those runs with 107 previous simula... |
2002.01663 | Hamid Reza Sepangi | A. Rahmani, M. Honardoost, H. R. Sepangi | Thermal phase transition in $F(R)$-charged $AdS_{4}$-scalar theory | 16 pages, 11 figures, to appear in PRD | Phys. Rev. D 101, 084036 (2020) | 10.1103/PhysRevD.101.084036 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate instabilities of $F(R)$-charged $AdS_{4}$ black holes by a
massive charged scalar field in a linear perturbation regime. We study
tachyonic instabilities as the near horizon scalar condensation in a model of
$F(R)$ gravity with planar horizon and investigate properties of possible phase
transitions. Th... | [
{
"created": "Wed, 5 Feb 2020 06:56:27 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Apr 2020 14:37:18 GMT",
"version": "v2"
}
] | 2020-04-22 | [
[
"Rahmani",
"A.",
""
],
[
"Honardoost",
"M.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | We investigate instabilities of $F(R)$-charged $AdS_{4}$ black holes by a massive charged scalar field in a linear perturbation regime. We study tachyonic instabilities as the near horizon scalar condensation in a model of $F(R)$ gravity with planar horizon and investigate properties of possible phase transitions. The ... |
1203.4750 | Homer G. Ellis | Homer G. Ellis | Gravity Inside a Nonrotating, Homogeneous, Spherical Body | 6 pages, 1 figure, 5 references, REVTex 4.1; v2: final paragraph
changed to delete error, 3 references added | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Schwarzschild's 'interior solution' is a space-time metric that satisfies
Einstein's gravitational field equations with a source term that Einstein
created on the basis of an unjustified identification of the conceptually
distinct notions of the passive gravitational mass of matter and the active
gravitational mass o... | [
{
"created": "Tue, 20 Mar 2012 19:27:04 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Oct 2012 20:00:48 GMT",
"version": "v2"
}
] | 2012-10-18 | [
[
"Ellis",
"Homer G.",
""
]
] | Schwarzschild's 'interior solution' is a space-time metric that satisfies Einstein's gravitational field equations with a source term that Einstein created on the basis of an unjustified identification of the conceptually distinct notions of the passive gravitational mass of matter and the active gravitational mass of ... |
2406.12015 | Adailton Ara\'ujo Filho | A. A. Ara\'ujo Filho, J. R. Nascimento, A. Yu. Petrov, P. J.
Porf\'irio, Ali \"Ovg\"un | Effects of non-commutative geometry on black hole properties | 26 pages, 13 figures and 4 tables | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this study, we investigate the signatures of a non-commutative black hole
solution. Initially, we calculate the thermodynamic properties of the system,
including entropy, heat capacity, and Hawking radiation. For the latter
quantity, we employ two distinct methods: surface gravity and the topological
approach. Add... | [
{
"created": "Mon, 17 Jun 2024 18:32:52 GMT",
"version": "v1"
}
] | 2024-06-19 | [
[
"Filho",
"A. A. Araújo",
""
],
[
"Nascimento",
"J. R.",
""
],
[
"Petrov",
"A. Yu.",
""
],
[
"Porfírio",
"P. J.",
""
],
[
"Övgün",
"Ali",
""
]
] | In this study, we investigate the signatures of a non-commutative black hole solution. Initially, we calculate the thermodynamic properties of the system, including entropy, heat capacity, and Hawking radiation. For the latter quantity, we employ two distinct methods: surface gravity and the topological approach. Addit... |
gr-qc/0701076 | Eanna E. Flanagan | Prakash Balachandran, Eanna E. Flanagan | Detectability of Mode Resonances in Coalescing Neutron Star Binaries | 3 pages, no figures | null | null | null | gr-qc | null | Inspirals of neutron star-neutron star binaries are a promising source of
gravitational waves for gravitational wave detectors like LIGO. During the
inspiral, the tidal gravitational field of one of the stars can resonantly
excite internal modes of the other star, resulting in a phase shift in the
gravitational wave ... | [
{
"created": "Mon, 15 Jan 2007 02:32:34 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Balachandran",
"Prakash",
""
],
[
"Flanagan",
"Eanna E.",
""
]
] | Inspirals of neutron star-neutron star binaries are a promising source of gravitational waves for gravitational wave detectors like LIGO. During the inspiral, the tidal gravitational field of one of the stars can resonantly excite internal modes of the other star, resulting in a phase shift in the gravitational wave si... |
0707.2825 | Yongli Ping | Yongli Ping, Lixin Xu, Chengwu Zhang, and Hongya Liu | Dark Energy in Global Brane Universe | 8 pages,4 figures | Int.J.Mod.Phys.D16:1633-1640,2007 | 10.1142/S0218271807011024 | null | gr-qc | null | We discuss the exact solutions of brane universes and the results indicate
the Friedmann equations on the branes are modified with a new density term.
Then, we assume the new term as the density of dark energy. Using Wetterich's
parametrization equation of state (EOS) of dark energy, we obtain the new term
varies wit... | [
{
"created": "Thu, 19 Jul 2007 00:40:13 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jul 2007 01:29:54 GMT",
"version": "v2"
},
{
"created": "Thu, 20 Dec 2007 12:18:13 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Ping",
"Yongli",
""
],
[
"Xu",
"Lixin",
""
],
[
"Zhang",
"Chengwu",
""
],
[
"Liu",
"Hongya",
""
]
] | We discuss the exact solutions of brane universes and the results indicate the Friedmann equations on the branes are modified with a new density term. Then, we assume the new term as the density of dark energy. Using Wetterich's parametrization equation of state (EOS) of dark energy, we obtain the new term varies with ... |
1211.6114 | Ulrich Sperhake | Ulrich Sperhake, Emanuele Berti, Vitor Cardoso, Frans Pretorius | Universality, maximum radiation and absorption in high-energy collisions
of black holes with spin | added simulations with larger spins; to match published version | Phys.Rev.Lett.111:041101,2013 | 10.1103/PhysRevLett.111.041101 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the impact of black hole spins on the dynamics of high-energy
black hole collisions. We report results from numerical simulations with
gamma-factors up to 2.49 and dimensionless spin parameter +0.85, +0.6, 0, -0.6,
-0.85. We find that the scattering threshold becomes independent of spin at
large center-of-... | [
{
"created": "Mon, 26 Nov 2012 21:00:03 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Aug 2013 12:30:00 GMT",
"version": "v2"
}
] | 2013-11-13 | [
[
"Sperhake",
"Ulrich",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Pretorius",
"Frans",
""
]
] | We explore the impact of black hole spins on the dynamics of high-energy black hole collisions. We report results from numerical simulations with gamma-factors up to 2.49 and dimensionless spin parameter +0.85, +0.6, 0, -0.6, -0.85. We find that the scattering threshold becomes independent of spin at large center-of-ma... |
gr-qc/0504097 | Mikhail Golubev B | Mikhail B. Golubev, Stanislav R. Kelner | Point Charge Self-Energy in the General Relativity | VI Fridmann Seminar, France, Corsica, Corgeze, 2004, LaTeX, 6 pages,
2 figes | Int.J.Mod.Phys. A20 (2005) 2288-2294 | 10.1142/S0217751X05024511 | null | gr-qc hep-th | null | Singularities in the metric of the classical solutions to the Einstein
equations (Schwarzschild, Kerr, Reissner -- Nordstr\"om and Kerr -- Newman
solutions) lead to appearance of generalized functions in the Einstein tensor
that are not usually taken into consideration. The generalized functions can be
of a more comp... | [
{
"created": "Thu, 21 Apr 2005 00:26:48 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Golubev",
"Mikhail B.",
""
],
[
"Kelner",
"Stanislav R.",
""
]
] | Singularities in the metric of the classical solutions to the Einstein equations (Schwarzschild, Kerr, Reissner -- Nordstr\"om and Kerr -- Newman solutions) lead to appearance of generalized functions in the Einstein tensor that are not usually taken into consideration. The generalized functions can be of a more comple... |
1506.06050 | Paolo Pani | Paolo Pani | I-Love-Q relations for a gravastar and the approach to the black-hole
limit | 10 pages, 2 figures, v2: various improvements, to appear in PRD, v3:
erratum available as an ancillary file and at
https://www.dropbox.com/s/0d1gsgy0idqtihi/erratum_1506.06050.pdf?dl=0
correcting the final result for the moment of inertia and for the tidal Love
number | Phys. Rev. D 92, 124030 (2015) | 10.1103/PhysRevD.92.124030 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The multipole moments and the tidal Love numbers of neutron stars and quark
stars satisfy certain relations which are almost insensitive to the star's
internal structure. A natural question is whether the same relations hold for
different compact objects and how they possibly approach the black-hole limit.
Here we co... | [
{
"created": "Fri, 19 Jun 2015 15:29:32 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Nov 2015 14:45:47 GMT",
"version": "v2"
},
{
"created": "Sat, 21 Jan 2017 12:21:50 GMT",
"version": "v3"
}
] | 2017-01-24 | [
[
"Pani",
"Paolo",
""
]
] | The multipole moments and the tidal Love numbers of neutron stars and quark stars satisfy certain relations which are almost insensitive to the star's internal structure. A natural question is whether the same relations hold for different compact objects and how they possibly approach the black-hole limit. Here we cons... |
1805.05856 | Bekir Baytas | Bekir Bayta\c{s}, Eugenio Bianchi, Nelson Yokomizo | Gluing polyhedra with entanglement in loop quantum gravity | 42 pages, 10 figures | Phys. Rev. D 98, 026001 (2018) | 10.1103/PhysRevD.98.026001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a spin-network basis state, nodes of the graph describe un-entangled
quantum regions of space, quantum polyhedra. In this paper we show how
entanglement between intertwiner degrees of freedom enforces gluing conditions
for neighboring quantum polyhedra. In particular we introduce Bell-network
states, entangled sta... | [
{
"created": "Tue, 15 May 2018 15:39:33 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Jul 2018 17:37:41 GMT",
"version": "v2"
}
] | 2018-07-04 | [
[
"Baytaş",
"Bekir",
""
],
[
"Bianchi",
"Eugenio",
""
],
[
"Yokomizo",
"Nelson",
""
]
] | In a spin-network basis state, nodes of the graph describe un-entangled quantum regions of space, quantum polyhedra. In this paper we show how entanglement between intertwiner degrees of freedom enforces gluing conditions for neighboring quantum polyhedra. In particular we introduce Bell-network states, entangled state... |
gr-qc/0612060 | Duncan Brown | Duncan A. Brown, Jeandrew Brink, Hua Fang, Jonathan R. Gair, Chao Li,
Geoffrey Lovelace, Ilya Mandel, Kip S. Thorne | Gravitational waves from intermediate-mass-ratio inspirals for
ground-based detectors | Accepted for publication in Physical Review Letters | Phys.Rev.Lett.99:201102,2007 | 10.1103/PhysRevLett.99.201102 | LIGO-P060054-00-Z | gr-qc astro-ph.CO astro-ph.HE | null | We explore the prospects for Advanced LIGO to detect gravitational waves from
neutron stars and stellar mass black holes spiraling into intermediate-mass
($M\sim 50 M_\odot$ to $350 M_\odot$) black holes. We estimate an event rate
for such \emph{intermediate-mass-ratio inspirals} (IMRIs) of up to $\sim
10$--$30 \math... | [
{
"created": "Mon, 11 Dec 2006 20:14:56 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Mar 2008 00:43:19 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Brown",
"Duncan A.",
""
],
[
"Brink",
"Jeandrew",
""
],
[
"Fang",
"Hua",
""
],
[
"Gair",
"Jonathan R.",
""
],
[
"Li",
"Chao",
""
],
[
"Lovelace",
"Geoffrey",
""
],
[
"Mandel",
"Ilya",
""
],
[
"Thor... | We explore the prospects for Advanced LIGO to detect gravitational waves from neutron stars and stellar mass black holes spiraling into intermediate-mass ($M\sim 50 M_\odot$ to $350 M_\odot$) black holes. We estimate an event rate for such \emph{intermediate-mass-ratio inspirals} (IMRIs) of up to $\sim 10$--$30 \mathrm... |
gr-qc/0501014 | T. R. Mongan | T. R. Mongan | Simple quantum cosmology: Vacuum energy and initial state | To be published in General Relativity and Gravitation, Vol. 37, May
2005. 5 pages, no figures | Gen.Rel.Grav. 37 (2005) 967-970 | 10.1007/s10714-005-0079-y | null | gr-qc astro-ph hep-ph | null | A static non-singular 10-dimensional closed Friedmann universe of Planck
size, filled with a perfect fluid with an equation of state with w = -2/3, can
arise spontaneously by a quantum fluctuation from nothing in 11-dimensional
spacetime. A quantum transition from this state can initiate the inflationary
quantum cosm... | [
{
"created": "Wed, 5 Jan 2005 21:20:42 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Mongan",
"T. R.",
""
]
] | A static non-singular 10-dimensional closed Friedmann universe of Planck size, filled with a perfect fluid with an equation of state with w = -2/3, can arise spontaneously by a quantum fluctuation from nothing in 11-dimensional spacetime. A quantum transition from this state can initiate the inflationary quantum cosmol... |
2209.07543 | Dongjun Li | Dongjun Li, Vincent S. H. Lee, Yanbei Chen, Kathryn M. Zurek | Interferometer Response to Geontropic Fluctuations | 17 pages, 6 figures | null | 10.1103/PhysRevD.107.024002 | CALT-TH-2022-033 | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We model vacuum fluctuations in quantum gravity with a scalar field,
characterized by a high occupation number, coupled to the metric. The
occupation number of the scalar is given by a thermal density matrix, whose
form is motivated by fluctuations in the vacuum energy, which have been shown
to be conformal near a li... | [
{
"created": "Thu, 15 Sep 2022 18:00:16 GMT",
"version": "v1"
}
] | 2023-01-18 | [
[
"Li",
"Dongjun",
""
],
[
"Lee",
"Vincent S. H.",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Zurek",
"Kathryn M.",
""
]
] | We model vacuum fluctuations in quantum gravity with a scalar field, characterized by a high occupation number, coupled to the metric. The occupation number of the scalar is given by a thermal density matrix, whose form is motivated by fluctuations in the vacuum energy, which have been shown to be conformal near a ligh... |
gr-qc/9712055 | Marsha Weaver | Marsha Weaver, James Isenberg, Beverly K. Berger | Mixmaster Behavior in Inhomogeneous Cosmological Spacetimes | 4 pages plus 4 figures. A sentence has been deleted. Accepted for
publication in PRL | Phys.Rev.Lett. 80 (1998) 2984-2987 | 10.1103/PhysRevLett.80.2984 | null | gr-qc | null | Numerical investigation of a class of inhomogeneous cosmological spacetimes
shows evidence that at a generic point in space the evolution toward the
initial singularity is asymptotically that of a spatially homogeneous spacetime
with Mixmaster behavior. This supports a long-standing conjecture due to
Belinskii et al.... | [
{
"created": "Fri, 12 Dec 1997 04:28:04 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Feb 1998 04:59:48 GMT",
"version": "v2"
},
{
"created": "Wed, 11 Mar 1998 20:35:55 GMT",
"version": "v3"
}
] | 2009-10-30 | [
[
"Weaver",
"Marsha",
""
],
[
"Isenberg",
"James",
""
],
[
"Berger",
"Beverly K.",
""
]
] | Numerical investigation of a class of inhomogeneous cosmological spacetimes shows evidence that at a generic point in space the evolution toward the initial singularity is asymptotically that of a spatially homogeneous spacetime with Mixmaster behavior. This supports a long-standing conjecture due to Belinskii et al. o... |
1707.01261 | Marcus Werner | Frederic P. Schuller and Marcus C. Werner | Etherington's Distance Duality with Birefringence | Invited paper for special issue `Gravitational Lensing and
Astrometry' of Universe, accepted for publication | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider light propagation in a spacetime whose kinematics allow weak
birefringence, and whose dynamics have recently been derived by gravitational
closure. Revisiting the definitions of luminosity and angular diameter
distances in this setting, we present a modification of the Etherington
distance duality relatio... | [
{
"created": "Wed, 5 Jul 2017 08:41:46 GMT",
"version": "v1"
}
] | 2017-07-06 | [
[
"Schuller",
"Frederic P.",
""
],
[
"Werner",
"Marcus C.",
""
]
] | We consider light propagation in a spacetime whose kinematics allow weak birefringence, and whose dynamics have recently been derived by gravitational closure. Revisiting the definitions of luminosity and angular diameter distances in this setting, we present a modification of the Etherington distance duality relation ... |
1603.04159 | Shingo Takeuchi | Shingo Takeuchi | Hawking fluxes and Anomalies in Rotating Regular Black Holes with a
Time-Delay | 26 pages, 2 figures, accepted version in CQG | Class.Quant.Grav. 33 (2016) 225016 | 10.1088/0264-9381/33/22/225016 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the anomaly cancellation method we are going to compute the Hawking
fluxes (the Hawking thermal flux and the total flux of energy-momentum tensor)
from a four-dimensional rotating regular black hole with a time-delay. To this
purpose, in the three metrics proposed in arXiv:1510.08828, we try to perform
the d... | [
{
"created": "Mon, 14 Mar 2016 08:05:29 GMT",
"version": "v1"
},
{
"created": "Tue, 3 May 2016 17:14:10 GMT",
"version": "v2"
},
{
"created": "Wed, 11 May 2016 15:19:13 GMT",
"version": "v3"
},
{
"created": "Mon, 16 May 2016 15:15:59 GMT",
"version": "v4"
},
{
"cr... | 2016-10-31 | [
[
"Takeuchi",
"Shingo",
""
]
] | Based on the anomaly cancellation method we are going to compute the Hawking fluxes (the Hawking thermal flux and the total flux of energy-momentum tensor) from a four-dimensional rotating regular black hole with a time-delay. To this purpose, in the three metrics proposed in arXiv:1510.08828, we try to perform the dim... |
gr-qc/0007074 | Kip S. Thorne | Lee Samuel Finn (1) and Kip S. Thorne (2) ((1) Department of Physics,
Astronomy & Astrophysics, The Pennsylvania State University, University Park,
PA, (2) Theoretical Astrophysics, California Institute of Technology,
Pasadena, CA) | Gravitational Waves from a Compact Star in a Circular, Inspiral Orbit,
in the Equatorial Plane of a Massive, Spinning Black Hole, as Observed by
LISA | Physical Review D, in press; 21 pages, 9 figures, 10 tables it is
present in the RevTeX file | Phys.Rev.D62:124021,2000 | 10.1103/PhysRevD.62.124021 | null | gr-qc | null | Results are presented from high-precision computations of the orbital
evolution and emitted gravitational waves for a stellar-mass object spiraling
into a massive black hole in a slowly shrinking, circular, equatorial orbit.
The focus of these computations is inspiral near the innermost stable circular
orbit (isco)--... | [
{
"created": "Fri, 28 Jul 2000 06:07:46 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Finn",
"Lee Samuel",
""
],
[
"Thorne",
"Kip S.",
""
]
] | Results are presented from high-precision computations of the orbital evolution and emitted gravitational waves for a stellar-mass object spiraling into a massive black hole in a slowly shrinking, circular, equatorial orbit. The focus of these computations is inspiral near the innermost stable circular orbit (isco)---m... |
gr-qc/0104016 | David Coule | D.H.Coule | Does brane cosmology have realistic principles? | extended version and title change | null | 10.1088/0264-9381/18/20/306 | null | gr-qc hep-th | null | The maximal symmetry, or Perfect Cosmological Principle(PCP), that prevents
AdS type spaces from degenerating into anti-inflationary collapse is argued to
be unphysical. For example, the simple requirement that brane-bulk models
should be the result of having evolved from even more energetic string
phenomena picks ou... | [
{
"created": "Wed, 4 Apr 2001 17:22:08 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Apr 2001 17:10:53 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Coule",
"D. H.",
""
]
] | The maximal symmetry, or Perfect Cosmological Principle(PCP), that prevents AdS type spaces from degenerating into anti-inflationary collapse is argued to be unphysical. For example, the simple requirement that brane-bulk models should be the result of having evolved from even more energetic string phenomena picks out ... |
2312.17014 | Bogeun Gwak | Junbeom Ko, Bogeun Gwak | Universality on thermodynamic relation with corrections in de Sitter
black holes | 19 pages, published in JHEP | null | 10.1007/JHEP03(2024)072 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We herein investigate the universal relation proposed by Goon and Penco in de
Sitter black holes with electric charge or angular momentum. Our analysis
focuses on the cosmological horizon, which only exists in de Sitter and Nariai
spacetimes. Because the relation is given in a general case, the overall
relationship m... | [
{
"created": "Thu, 28 Dec 2023 13:31:15 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Mar 2024 12:12:06 GMT",
"version": "v2"
}
] | 2024-03-15 | [
[
"Ko",
"Junbeom",
""
],
[
"Gwak",
"Bogeun",
""
]
] | We herein investigate the universal relation proposed by Goon and Penco in de Sitter black holes with electric charge or angular momentum. Our analysis focuses on the cosmological horizon, which only exists in de Sitter and Nariai spacetimes. Because the relation is given in a general case, the overall relationship may... |
2110.02340 | Mitja Fridman Mr. | Saurya Das, Mitja Fridman, Gaetano Lambiase, Antonio Stabile and Elias
C. Vagenas | Modified dispersion relations and a potential explanation of the EDGES
anomaly | 11 pages, 8 figures | Eur. Phys. J. C 82, no.8, 720 (2022) [erratum: Eur. Phys. J. C 82,
no.9, 816 (2022)] | 10.1140/epjc/s10052-022-10680-8 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Experiment to Detect the Global Epoch of Reionisation Signature (EDGES)
collaboration has recently reported an important result related to the
absorption signal in the Cosmic Microwave Background radiation spectrum. This
signal corresponds to the red-shifted 21-cm line at $z \simeq 17.2$, whose
amplitude is about... | [
{
"created": "Tue, 5 Oct 2021 20:15:31 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Aug 2022 16:01:40 GMT",
"version": "v2"
}
] | 2023-06-30 | [
[
"Das",
"Saurya",
""
],
[
"Fridman",
"Mitja",
""
],
[
"Lambiase",
"Gaetano",
""
],
[
"Stabile",
"Antonio",
""
],
[
"Vagenas",
"Elias C.",
""
]
] | The Experiment to Detect the Global Epoch of Reionisation Signature (EDGES) collaboration has recently reported an important result related to the absorption signal in the Cosmic Microwave Background radiation spectrum. This signal corresponds to the red-shifted 21-cm line at $z \simeq 17.2$, whose amplitude is about t... |
1908.04275 | Andreas Schmitt | Nils Andersson and Andreas Schmitt | Dissipation triggers dynamical two-stream instability | 20 pages, 4 figures, v2: minor changes in the text, references added,
version accepted for publication | null | null | null | gr-qc astro-ph.HE hep-ph physics.plasm-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Two coupled, interpenetrating fluids suffer instabilities beyond certain
critical counterflows. For ideal fluids, an energetic instability occurs at the
point where a sound mode inverts its direction due to the counterflow, while
dynamical instabilities only occur at larger relative velocities. Here we
discuss two re... | [
{
"created": "Wed, 7 Aug 2019 10:02:21 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Nov 2019 10:15:32 GMT",
"version": "v2"
}
] | 2019-11-04 | [
[
"Andersson",
"Nils",
""
],
[
"Schmitt",
"Andreas",
""
]
] | Two coupled, interpenetrating fluids suffer instabilities beyond certain critical counterflows. For ideal fluids, an energetic instability occurs at the point where a sound mode inverts its direction due to the counterflow, while dynamical instabilities only occur at larger relative velocities. Here we discuss two rela... |
2309.07397 | Long-Gang Pang | Zhi-Han Li, Chen-Qi Li, Long-Gang Pang | Solving Einstein equations using deep learning | 18 pages, 4 figures | null | null | null | gr-qc nucl-th physics.comp-ph | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Einstein field equations are notoriously challenging to solve due to their
complex mathematical form, with few analytical solutions available in the
absence of highly symmetric systems or ideal matter distribution. However,
accurate solutions are crucial, particularly in systems with strong
gravitational field such a... | [
{
"created": "Thu, 14 Sep 2023 02:46:48 GMT",
"version": "v1"
}
] | 2023-09-15 | [
[
"Li",
"Zhi-Han",
""
],
[
"Li",
"Chen-Qi",
""
],
[
"Pang",
"Long-Gang",
""
]
] | Einstein field equations are notoriously challenging to solve due to their complex mathematical form, with few analytical solutions available in the absence of highly symmetric systems or ideal matter distribution. However, accurate solutions are crucial, particularly in systems with strong gravitational field such as ... |
2301.04967 | Hai Siong Tan | H. S. Tan | Shadows of Kerr-Vaidya-like black holes | 28 pages, 9 figures. [v4]: minor edits | Class. Quantum Grav. 40 195010, 2023 | 10.1088/1361-6382/acf180 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | In this work, we study the shadow boundary curves of rotating time-dependent
black hole solutions which have well-defined Kerr and Vaidya limits. These
solutions are constructed by applying the Newman-Janis algorithm to a
spherically symmetric seed metric conformal to the Vaidya solution with a mass
function that is ... | [
{
"created": "Thu, 12 Jan 2023 12:21:28 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Jan 2023 11:29:42 GMT",
"version": "v2"
},
{
"created": "Sun, 20 Aug 2023 13:51:51 GMT",
"version": "v3"
},
{
"created": "Wed, 20 Sep 2023 23:29:14 GMT",
"version": "v4"
}
] | 2023-09-22 | [
[
"Tan",
"H. S.",
""
]
] | In this work, we study the shadow boundary curves of rotating time-dependent black hole solutions which have well-defined Kerr and Vaidya limits. These solutions are constructed by applying the Newman-Janis algorithm to a spherically symmetric seed metric conformal to the Vaidya solution with a mass function that is li... |
2310.07356 | Archie Cable | Archie Cable and Arttu Rajantie | Stochastic parameters for scalar fields in de Sitter spacetime | 53 pages, 4 figures | Phys. Rev. D 109, 045017 (2024) | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The stochastic effective theory approach, often called stochastic inflation,
is widely used in cosmology to describe scalar field dynamics during inflation.
The existing formulations are, however, more qualitative than quantitative
because the connection to the underlying quantum field theory (QFT) has not
been prope... | [
{
"created": "Wed, 11 Oct 2023 10:14:54 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Oct 2023 08:59:07 GMT",
"version": "v2"
},
{
"created": "Wed, 28 Feb 2024 10:07:54 GMT",
"version": "v3"
}
] | 2024-02-29 | [
[
"Cable",
"Archie",
""
],
[
"Rajantie",
"Arttu",
""
]
] | The stochastic effective theory approach, often called stochastic inflation, is widely used in cosmology to describe scalar field dynamics during inflation. The existing formulations are, however, more qualitative than quantitative because the connection to the underlying quantum field theory (QFT) has not been properl... |
1906.10363 | Yuki Sakakihara | Asuka Ito, Yuki Sakakihara, Jiro Soda | Accelerating Universe with a stable extra dimension in cuscuton gravity | 10 pages | Phys. Rev. D 100, 063531 (2019) | 10.1103/PhysRevD.100.063531 | KOBE-COSMO-09-11 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study Kaluza-Klein cosmology in cuscuton gravity and find an exact
solution describing an accelerating 4-dimensional universe with a stable extra
dimension. A cuscuton which is a non-dynamical scalar field is responsible for
the accelerating expansion and a vector field makes the extra dimensional space
stable. Re... | [
{
"created": "Tue, 25 Jun 2019 07:41:43 GMT",
"version": "v1"
}
] | 2019-10-02 | [
[
"Ito",
"Asuka",
""
],
[
"Sakakihara",
"Yuki",
""
],
[
"Soda",
"Jiro",
""
]
] | We study Kaluza-Klein cosmology in cuscuton gravity and find an exact solution describing an accelerating 4-dimensional universe with a stable extra dimension. A cuscuton which is a non-dynamical scalar field is responsible for the accelerating expansion and a vector field makes the extra dimensional space stable. Rema... |
2402.06413 | Tianshu Wu | Tianshu Wu and Yiqian Chen | Distinguishing the Observational Signatures of Hot Spots Orbiting
Reissner-Nordstr\"om Spacetime | 21 pages, 7 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper delves into observable signatures of hot spots orbiting
Reissner-Nordstr\"om (RN) black holes and naked singularities. In a RN black
hole case, we find two discernible lensing image tracks in time integrated
images capturing a complete orbit of hot spots, and a image shadow within the
critical curve where ... | [
{
"created": "Fri, 9 Feb 2024 14:00:09 GMT",
"version": "v1"
}
] | 2024-02-12 | [
[
"Wu",
"Tianshu",
""
],
[
"Chen",
"Yiqian",
""
]
] | This paper delves into observable signatures of hot spots orbiting Reissner-Nordstr\"om (RN) black holes and naked singularities. In a RN black hole case, we find two discernible lensing image tracks in time integrated images capturing a complete orbit of hot spots, and a image shadow within the critical curve where ph... |
0708.0178 | Volker Perlick | Volker Perlick | Theoretical gravitational lensing. Beyond the weak-field small-angle
approximation | 20 pages, 9 figures; extended written version of rapporteur talk,
given at the workshop on ``Theoretical Gravitational Lensing'' at the 11th
Marcel Grossmann Meeting, Berlin, 2006 | null | 10.1142/9789812834300_0030 | null | gr-qc | null | An overview is given on those theoretical gravitational lensing results that
can be formulated in a spacetime setting, without assuming that the
gravitational fields are weak and that the bending angles are small. The first
part is devoted to analytical methods considering spacetimes in which the
equations for light ... | [
{
"created": "Wed, 1 Aug 2007 15:31:22 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Perlick",
"Volker",
""
]
] | An overview is given on those theoretical gravitational lensing results that can be formulated in a spacetime setting, without assuming that the gravitational fields are weak and that the bending angles are small. The first part is devoted to analytical methods considering spacetimes in which the equations for light ra... |
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