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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1812.10239 | Masashi Yamazaki | Masashi Yamazaki, Taishi Katsuragawa, Sergei D. Odintsov, Shin'ichi
Nojiri | Screened and Unscreened Solutions for Relativistic Star in de
Rham-Gabadadze-Tolley (dRGT) Massive Gravity | 22 pages | Phys. Rev. D 100, 084060 (2019) | 10.1103/PhysRevD.100.084060 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the static and spherical symmetric (SSS) configurations in the
non-minimal model of the de Rham-Gabadadze-Tolley (dRGT) massive gravity with a
flat reference metric. Considering the modified Tolman-Oppenheimer-Volkoff
(TOV) equation, the Bianchi identity, and energy-momentum conservation, we find
a new algeb... | [
{
"created": "Wed, 26 Dec 2018 06:17:35 GMT",
"version": "v1"
}
] | 2019-10-30 | [
[
"Yamazaki",
"Masashi",
""
],
[
"Katsuragawa",
"Taishi",
""
],
[
"Odintsov",
"Sergei D.",
""
],
[
"Nojiri",
"Shin'ichi",
""
]
] | We study the static and spherical symmetric (SSS) configurations in the non-minimal model of the de Rham-Gabadadze-Tolley (dRGT) massive gravity with a flat reference metric. Considering the modified Tolman-Oppenheimer-Volkoff (TOV) equation, the Bianchi identity, and energy-momentum conservation, we find a new algebra... |
0812.4103 | Helio V. Fagundes | Helio V. Fagundes | Closed Spaces in Cosmology | 20 pages, 6 figures, revised version of published paper. In version
2: several misprints corrected, 'redshifting' in figures improved. Version 3:
a few style corrections; couple of paragraphs in subsection 2.4 rewritten.
Version 4: figures 5 and 6 corrrected | Gen.Rel.Grav.24:199,1992 | 10.1023/A:1018869028234 | null | gr-qc astro-ph math.GT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper deals with two aspects of relativistic cosmologies with closed
(compact and boundless) spatial sections. These spacetimes are based on the
theory of General Relativity, and admit a foliation into space sections S(t),
which are spacelike hypersurfaces satisfying the postulate of the closure of
space: each S... | [
{
"created": "Mon, 22 Dec 2008 06:07:39 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Dec 2008 21:15:20 GMT",
"version": "v2"
},
{
"created": "Mon, 5 Jan 2009 15:43:32 GMT",
"version": "v3"
},
{
"created": "Tue, 13 Jan 2009 14:01:08 GMT",
"version": "v4"
}
] | 2015-05-13 | [
[
"Fagundes",
"Helio V.",
""
]
] | This paper deals with two aspects of relativistic cosmologies with closed (compact and boundless) spatial sections. These spacetimes are based on the theory of General Relativity, and admit a foliation into space sections S(t), which are spacelike hypersurfaces satisfying the postulate of the closure of space: each S(t... |
2301.08557 | Lili He | Lili He | The linear stability of weakly charged and slowly rotating Kerr-Newman
family of charged black holes | 180 pages, 11 figures; Typo corrected, referenced added, section 2,
3, 4 revised, results unchanged | null | null | null | gr-qc math-ph math.AP math.MP | http://creativecommons.org/licenses/by/4.0/ | In this paper, we prove the linear stability of weakly charged and slowly
rotating Kerr-Newman black holes under coupled gravitational and
electromagnetic perturbations. We show that the solutions to the linearized
Einstein-Maxwell equations decay at an inverse polynomial rate to a linearized
Kerr-Newman solution plu... | [
{
"created": "Wed, 18 Jan 2023 09:58:13 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Jan 2023 15:24:30 GMT",
"version": "v2"
}
] | 2023-01-27 | [
[
"He",
"Lili",
""
]
] | In this paper, we prove the linear stability of weakly charged and slowly rotating Kerr-Newman black holes under coupled gravitational and electromagnetic perturbations. We show that the solutions to the linearized Einstein-Maxwell equations decay at an inverse polynomial rate to a linearized Kerr-Newman solution plus ... |
gr-qc/0012078 | Remo Garattini | Remo Garattini | Casimir energy and black hole pair creation in Schwarzschild-de Sitter
spacetime | 19 pages,RevTeX with package epsf and four eps figures. Added other
references. Accepted for publication in Classical and Quantum Gravity | Class.Quant.Grav. 18 (2001) 571-592 | 10.1088/0264-9381/18/4/301 | null | gr-qc hep-th | null | Following the subtraction procedure for manifolds with boundaries, we
calculate by variational methods, the Schwarzschild-de Sitter and the de Sitter
space energy difference. By computing the one loop approximation for TT tensors
we discover the existence of an unstable mode even for the non-degenerate case.
This res... | [
{
"created": "Wed, 20 Dec 2000 10:47:32 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Jan 2001 18:48:46 GMT",
"version": "v2"
},
{
"created": "Mon, 22 Jan 2001 18:49:20 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Garattini",
"Remo",
""
]
] | Following the subtraction procedure for manifolds with boundaries, we calculate by variational methods, the Schwarzschild-de Sitter and the de Sitter space energy difference. By computing the one loop approximation for TT tensors we discover the existence of an unstable mode even for the non-degenerate case. This resul... |
2404.10563 | Dongxue Qu | Muxin Han, Hongguang Liu, Dongxue Qu | A Mathematica program for numerically computing real and complex
critical points in 4-dimensional Lorentzian spinfoam amplitude | 34 pages, 36 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work develops a comprehensive algorithm and a Mathematica program to
construct boundary data and compute real and complex critical points in
spinfoam amplitudes. Our approach covers both spacelike tetrahedra and
triangles in the EPRL model and timelike tetrahedra and triangles in the
Conrady-Hnybida extension, a... | [
{
"created": "Tue, 16 Apr 2024 13:39:14 GMT",
"version": "v1"
}
] | 2024-04-17 | [
[
"Han",
"Muxin",
""
],
[
"Liu",
"Hongguang",
""
],
[
"Qu",
"Dongxue",
""
]
] | This work develops a comprehensive algorithm and a Mathematica program to construct boundary data and compute real and complex critical points in spinfoam amplitudes. Our approach covers both spacelike tetrahedra and triangles in the EPRL model and timelike tetrahedra and triangles in the Conrady-Hnybida extension, aim... |
gr-qc/0203089 | L. C. Garcia de Andrade | L.C.Garcia de Andrade | A comment on the inhomogeneous Einstein-Cartan-Kalb-Ramond fields in
Cosmology | Latex file | null | null | null | gr-qc | null | Purely time dependent solutions in four-dimensional
Einstein-Cartan-Kalb-Ramond (ECKR) theory of gravity are shown not to be
possible leading to a trivial vanishing of all Kalb-Ramond fields. This result
seems to contradict previously results obtained by SenGupta et al. (Class. and
Quantum Gravity 19(2002)677) where ... | [
{
"created": "Tue, 26 Mar 2002 12:03:45 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"de Andrade",
"L. C. Garcia",
""
]
] | Purely time dependent solutions in four-dimensional Einstein-Cartan-Kalb-Ramond (ECKR) theory of gravity are shown not to be possible leading to a trivial vanishing of all Kalb-Ramond fields. This result seems to contradict previously results obtained by SenGupta et al. (Class. and Quantum Gravity 19(2002)677) where de... |
0903.4260 | M. Hossein Dehghani | M. H. Dehghani and R. Pourhasan | Thermodynamic Instability of Black Holes of Third Order Lovelock Gravity | 16 pages, 8 figures | Phys.Rev.D79:064015,2009 | 10.1103/PhysRevD.79.064015 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we compute the mass and the temperature of the uncharged black
holes of third order Lovelock gravity and compute the entropy through the use
of first law of thermodynamics. We perform a stability analysis by studying the
curves of temperature versus the mass parameter, and find that there exists an
int... | [
{
"created": "Wed, 25 Mar 2009 08:37:56 GMT",
"version": "v1"
}
] | 2010-04-22 | [
[
"Dehghani",
"M. H.",
""
],
[
"Pourhasan",
"R.",
""
]
] | In this paper, we compute the mass and the temperature of the uncharged black holes of third order Lovelock gravity and compute the entropy through the use of first law of thermodynamics. We perform a stability analysis by studying the curves of temperature versus the mass parameter, and find that there exists an inter... |
2401.04480 | Alkiviadis Triantafyllopoulos | A. Triantafyllopoulos, E. Kapsabelis and P. C. Stavrinos | Raychaudhuri equations, Tidal forces and Weak field Limit in
Schwarzshild-Finsler-Randers spacetime | 18 pages | Universe 2024, 10(1), 26 | 10.3390/universe10010026 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this article, we study the form of deviation of geodesics (tidal forces)
and Raychaudhuri equation in a Schwarzshild-Finsler-Randers (SFR) spacetime
which has been investigated in previous papers. This model is obtained by
considering the structure of a Lorentz tangent bundle of spacetime and in
particular the kin... | [
{
"created": "Tue, 9 Jan 2024 10:38:11 GMT",
"version": "v1"
}
] | 2024-01-10 | [
[
"Triantafyllopoulos",
"A.",
""
],
[
"Kapsabelis",
"E.",
""
],
[
"Stavrinos",
"P. C.",
""
]
] | In this article, we study the form of deviation of geodesics (tidal forces) and Raychaudhuri equation in a Schwarzshild-Finsler-Randers (SFR) spacetime which has been investigated in previous papers. This model is obtained by considering the structure of a Lorentz tangent bundle of spacetime and in particular the kind ... |
1207.1823 | Laszlo Arpad Gergely | Zsolt Horv\'ath, L\'aszl\'o \'A. Gergely, David Hobill, Salvatore
Capozziello, Mariafelicia De Laurentis | Weak gravitational lensing by compact objects in fourth order gravity | 14 pages, 8 figures, published version. Appendix added on the energy
conditions for the modifications from GR, interpreted as an effective
energy-momentum tensor | Phys.Rev.D88:063009,2013 | 10.1103/PhysRevD.88.063009 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss weak lensing characteristics in the gravitational field of a
compact object in the low-energy approximation of fourth order f(R) gravity
theory. The particular solution is characterized by a gravitational strength
parameter $\sigma $ and a distance scale $r_{c}$ much larger than the
Schwarzschild radius. A... | [
{
"created": "Sat, 7 Jul 2012 19:08:38 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Dec 2013 07:38:54 GMT",
"version": "v2"
}
] | 2013-12-05 | [
[
"Horváth",
"Zsolt",
""
],
[
"Gergely",
"László Á.",
""
],
[
"Hobill",
"David",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"De Laurentis",
"Mariafelicia",
""
]
] | We discuss weak lensing characteristics in the gravitational field of a compact object in the low-energy approximation of fourth order f(R) gravity theory. The particular solution is characterized by a gravitational strength parameter $\sigma $ and a distance scale $r_{c}$ much larger than the Schwarzschild radius. Abo... |
gr-qc/9904039 | Albert Roura | Albert Roura and Enric Verdaguer | Spacelike Fluctuations of the Stress Tensor for de Sitter Vacuum | revTeX, 7 pages. To appear in the proceedings of the 3rd Peyresq
meeting | Int.J.Theor.Phys.38:3123-3133,1999 | 10.1023/A:1026624603044 | null | gr-qc | null | The two-point function characterizing the stress tensor fluctuations of a
massless minimally coupled field for an invariant vacuum state in de Sitter
spacetime is discussed. This two-point function is explicitly computed for
spacelike separated points which are geodesically connected. We show that these
fluctuations ... | [
{
"created": "Fri, 16 Apr 1999 14:13:48 GMT",
"version": "v1"
}
] | 2011-04-15 | [
[
"Roura",
"Albert",
""
],
[
"Verdaguer",
"Enric",
""
]
] | The two-point function characterizing the stress tensor fluctuations of a massless minimally coupled field for an invariant vacuum state in de Sitter spacetime is discussed. This two-point function is explicitly computed for spacelike separated points which are geodesically connected. We show that these fluctuations ar... |
1501.02809 | Tim Johannsen | Tim Johannsen (Waterloo, CITA, Perimeter) | Regular Black Hole Metric with Three Constants of Motion | 22 pages, 12 figures, see http://arxiv.org/abs/1512.03818 for an
updated list of mappings to known black-hole solutions | PRD, 88, 044002 (2013) | 10.1103/PhysRevD.88.044002 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | According to the no-hair theorem, astrophysical black holes are uniquely
characterized by their masses and spins and are described by the Kerr metric.
Several parametric spacetimes which deviate from the Kerr metric have been
proposed in order to test this theorem with observations of black holes in both
the electrom... | [
{
"created": "Mon, 12 Jan 2015 21:00:14 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Dec 2015 14:58:32 GMT",
"version": "v2"
}
] | 2015-12-16 | [
[
"Johannsen",
"Tim",
"",
"Waterloo, CITA, Perimeter"
]
] | According to the no-hair theorem, astrophysical black holes are uniquely characterized by their masses and spins and are described by the Kerr metric. Several parametric spacetimes which deviate from the Kerr metric have been proposed in order to test this theorem with observations of black holes in both the electromag... |
1805.01022 | Farhad Darabi | Y. Heydarzade, F. Darabi | Surrounded Vaidya black holes: apparent horizon properties | 23 pages | Eur. Phys. J. C (2018) 78:342 | 10.1140/epjc/s10052-018-5842-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the thermodynamical features and dynamical evolutions of various
apparent horizons associated with the Vaidya evaporating black hole surrounded
by the cosmological fields of dust, radiation, quintessence, cosmological
constant-like and phantom. In this regard, we address in detail how do these
surrounding fi... | [
{
"created": "Wed, 2 May 2018 21:06:02 GMT",
"version": "v1"
}
] | 2018-05-04 | [
[
"Heydarzade",
"Y.",
""
],
[
"Darabi",
"F.",
""
]
] | We study the thermodynamical features and dynamical evolutions of various apparent horizons associated with the Vaidya evaporating black hole surrounded by the cosmological fields of dust, radiation, quintessence, cosmological constant-like and phantom. In this regard, we address in detail how do these surrounding fiel... |
2401.16912 | Jos\'e A. S. Pelegr\'in | Jos\'e A. S. Pelegr\'in | Extremal and weakly trapped submanifolds in Generalized Robertson-Walker
spacetimes | This is a preprint of the article published available at
https://doi.org/10.1016/j.jmaa.2021.125533 | null | 10.1016/j.jmaa.2021.125533 | null | gr-qc math.DG | http://creativecommons.org/licenses/by-nc-nd/4.0/ | In this article we obtain new rigidity results for spacelike submanifolds of
arbitrary codimension in Generalized Robertson-Walker spacetimes. Namely, under
appropriate assumptions such as parabolicity we prove by means of some maximum
principles that they must be contained in a spacelike slice. This enables us to
ch... | [
{
"created": "Tue, 30 Jan 2024 11:25:18 GMT",
"version": "v1"
}
] | 2024-01-31 | [
[
"Pelegrín",
"José A. S.",
""
]
] | In this article we obtain new rigidity results for spacelike submanifolds of arbitrary codimension in Generalized Robertson-Walker spacetimes. Namely, under appropriate assumptions such as parabolicity we prove by means of some maximum principles that they must be contained in a spacelike slice. This enables us to char... |
1906.04197 | Vishal Baibhav | Vishal Baibhav, Emanuele Berti, Davide Gerosa, Michela Mapelli, Nicola
Giacobbo, Yann Bouffanais, Ugo N. Di Carlo | Gravitational-wave detection rates for compact binaries formed in
isolation: LIGO/Virgo O3 and beyond | 9 pages, 4 figures, 2 tables Matches the published version | Phys. Rev. D 100, 064060 (2019) | 10.1103/PhysRevD.100.064060 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using simulations performed with the population synthesis code MOBSE, we
compute the merger rate densities and detection rates of compact binary mergers
formed in isolation for second- and third-generation gravitational-wave
detectors. We estimate how rates are affected by uncertainties on key
stellar-physics paramet... | [
{
"created": "Mon, 10 Jun 2019 18:00:11 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Oct 2019 19:11:53 GMT",
"version": "v2"
}
] | 2019-10-07 | [
[
"Baibhav",
"Vishal",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Gerosa",
"Davide",
""
],
[
"Mapelli",
"Michela",
""
],
[
"Giacobbo",
"Nicola",
""
],
[
"Bouffanais",
"Yann",
""
],
[
"Di Carlo",
"Ugo N.",
""
]
] | Using simulations performed with the population synthesis code MOBSE, we compute the merger rate densities and detection rates of compact binary mergers formed in isolation for second- and third-generation gravitational-wave detectors. We estimate how rates are affected by uncertainties on key stellar-physics parameter... |
gr-qc/0512154 | G. Papini | G. Lambiase, G. Papini, R. Punzi, G. Scarpetta | Lower Neutrino Mass Bound from SN1987A Data and Quantum Geometry | 22 pages, 3 figures | Class.Quant.Grav.23:1347-1358,2006 | 10.1088/0264-9381/23/4/015 | null | gr-qc astro-ph hep-th | null | A lower bound on the light neutrino mass $m_\nu$ is derived in the framework
of a geometrical interpretation of quantum mechanics. Using this model and the
time of flight delay data for neutrinos coming from SN1987A, we find that the
neutrino masses are bounded from below by $m_\nu\gtrsim 10^{-4}-10^{-3}$eV, in
agree... | [
{
"created": "Wed, 28 Dec 2005 02:30:33 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Lambiase",
"G.",
""
],
[
"Papini",
"G.",
""
],
[
"Punzi",
"R.",
""
],
[
"Scarpetta",
"G.",
""
]
] | A lower bound on the light neutrino mass $m_\nu$ is derived in the framework of a geometrical interpretation of quantum mechanics. Using this model and the time of flight delay data for neutrinos coming from SN1987A, we find that the neutrino masses are bounded from below by $m_\nu\gtrsim 10^{-4}-10^{-3}$eV, in agreeme... |
1211.0546 | Mark Hannam | Emily Baird, Stephen Fairhurst, Mark Hannam, Patricia Murphy | Degeneracy between mass and spin in black-hole-binary waveforms | 11 pages, 9 figures | null | 10.1103/PhysRevD.87.024035 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the degeneracy between mass and spin in gravitational waveforms
emitted by black-hole binary coalescences. We focus on spin-aligned waveforms
and obtain our results using phenomenological models that were tuned to
numerical-relativity simulations. A degeneracy is known for low-mass binaries
(particularly n... | [
{
"created": "Fri, 2 Nov 2012 20:00:06 GMT",
"version": "v1"
}
] | 2013-05-30 | [
[
"Baird",
"Emily",
""
],
[
"Fairhurst",
"Stephen",
""
],
[
"Hannam",
"Mark",
""
],
[
"Murphy",
"Patricia",
""
]
] | We explore the degeneracy between mass and spin in gravitational waveforms emitted by black-hole binary coalescences. We focus on spin-aligned waveforms and obtain our results using phenomenological models that were tuned to numerical-relativity simulations. A degeneracy is known for low-mass binaries (particularly neu... |
1105.1371 | Dong-han Yeom | Dong-il Hwang, Hongbin Kim, Dong-han Yeom | Dynamical formation and evolution of (2+1)-dimensional charged black
holes | 40 pages, 15 figures | Class.Quant.Grav.29:055003,2012 | 10.1088/0264-9381/29/5/055003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the dynamical formation and evolution of 2 +
1-dimensional charged black holes. We numerically study dynamical collapses of
charged matter fields in an anti de Sitter background and note the formation of
black holes using the double-null formalism. Moreover, we include re-normalized
ener... | [
{
"created": "Fri, 6 May 2011 14:42:54 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Feb 2012 06:24:29 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Hwang",
"Dong-il",
""
],
[
"Kim",
"Hongbin",
""
],
[
"Yeom",
"Dong-han",
""
]
] | In this paper, we investigate the dynamical formation and evolution of 2 + 1-dimensional charged black holes. We numerically study dynamical collapses of charged matter fields in an anti de Sitter background and note the formation of black holes using the double-null formalism. Moreover, we include re-normalized energy... |
gr-qc/0312042 | Neil J. Cornish | Neil J. Cornish | Rapid LISA Astronomy | 4 Pages, 2 Figures, RevTex | null | null | null | gr-qc | null | A simple method is presented for removing the amplitude, frequency and phase
modulations from the Laser Interferometer Space Antenna (LISA) data stream for
sources at any sky location. When combined with an excess power trigger or the
fast chirp transform, the total demodulation procedure allows the majority of
LISA ... | [
{
"created": "Sun, 7 Dec 2003 21:59:19 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cornish",
"Neil J.",
""
]
] | A simple method is presented for removing the amplitude, frequency and phase modulations from the Laser Interferometer Space Antenna (LISA) data stream for sources at any sky location. When combined with an excess power trigger or the fast chirp transform, the total demodulation procedure allows the majority of LISA so... |
1308.3910 | Salvatore Capozziello | Salvatore Capozziello and Mahmood Roshan | Exact cosmological solutions from Hojman conservation quantities | 11 pages, 13 figures, accepted for publication in Phys. Lett. B | null | 10.1016/j.physletb.2013.08.047 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new approach to find exact solutions for cosmological models. By
requiring the existence of a symmetry transformation vector for the equations
of motion of the given cosmological model (without using either Lagrangian or
Hamiltonian), one can find corresponding Hojman conserved quantities. With the
help ... | [
{
"created": "Mon, 19 Aug 2013 01:50:20 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Roshan",
"Mahmood",
""
]
] | We present a new approach to find exact solutions for cosmological models. By requiring the existence of a symmetry transformation vector for the equations of motion of the given cosmological model (without using either Lagrangian or Hamiltonian), one can find corresponding Hojman conserved quantities. With the help of... |
1406.3045 | Saibal Ray | Farook Rahaman, Sreya Karmakar, Indrani Karar and Saibal Ray | Wormhole inspired by non-commutative geometry | 15 pages, 6 figures, 1 table, Substantial modifications in the whole
manuscript, Accepted in Phys. Lett. B | null | 10.1016/j.physletb.2015.04.048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work we search for a new wormhole solution inspired by
noncommutative geometry with the additional condition of allowing conformal
Killing vectors (CKV). A special aspect of noncommutative geometry is that it
replaces point-like structures of gravitational sources with smeared objects
under Gaussian di... | [
{
"created": "Tue, 10 Jun 2014 07:02:58 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Jun 2014 11:10:22 GMT",
"version": "v2"
},
{
"created": "Thu, 14 May 2015 05:50:34 GMT",
"version": "v3"
}
] | 2015-05-15 | [
[
"Rahaman",
"Farook",
""
],
[
"Karmakar",
"Sreya",
""
],
[
"Karar",
"Indrani",
""
],
[
"Ray",
"Saibal",
""
]
] | In the present work we search for a new wormhole solution inspired by noncommutative geometry with the additional condition of allowing conformal Killing vectors (CKV). A special aspect of noncommutative geometry is that it replaces point-like structures of gravitational sources with smeared objects under Gaussian dist... |
1809.09976 | Freddy Cueva Solano | Freddy Cueva Solano | Kinematic state of an interacting cosmology modeled with Chebyshev
polynomials | 9 pages, 11 figures. arXiv admin note: substantial text overlap with
arXiv:1806.00341 | null | null | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | In a spatially flat universe and for an interacting cosmology, we have
reconstructed the interaction term, $Q$, between a cold dark matter (DM) fluid
and a dark energy (DE) fluid, as well as a time-varying equation of state (EoS)
parameter $\mathrm{\omega_{DE}}$, and have explored their cosmological impacts
on the am... | [
{
"created": "Tue, 25 Sep 2018 01:04:26 GMT",
"version": "v1"
}
] | 2018-09-27 | [
[
"Solano",
"Freddy Cueva",
""
]
] | In a spatially flat universe and for an interacting cosmology, we have reconstructed the interaction term, $Q$, between a cold dark matter (DM) fluid and a dark energy (DE) fluid, as well as a time-varying equation of state (EoS) parameter $\mathrm{\omega_{DE}}$, and have explored their cosmological impacts on the ampl... |
1807.06468 | Dmitry Novikov I | I.D. Novikov, G.S. Bisnovatyi-Kogan, D.I. Novikov | Stars creating a gravitational repulsion | 6 pages, 4 figures | Phys. Rev. D 98, 063528 (2018) | 10.1103/PhysRevD.98.063528 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the framework of the Theory of General Relativity, models of stars with an
unusual equation of state $\rho c^2<0$, $P>0$ where $\rho$ is the mass density
and $P$ is the pressure, are constructed. These objects create outside
themselves the forces of gravitational repulsion. The equilibrium of such stars
is ensured... | [
{
"created": "Mon, 16 Jul 2018 11:10:55 GMT",
"version": "v1"
}
] | 2018-10-03 | [
[
"Novikov",
"I. D.",
""
],
[
"Bisnovatyi-Kogan",
"G. S.",
""
],
[
"Novikov",
"D. I.",
""
]
] | In the framework of the Theory of General Relativity, models of stars with an unusual equation of state $\rho c^2<0$, $P>0$ where $\rho$ is the mass density and $P$ is the pressure, are constructed. These objects create outside themselves the forces of gravitational repulsion. The equilibrium of such stars is ensured b... |
1809.00313 | Yu Han | Yu Han | Cosmological perturbations with inverse-volume corrections in loop
quantum cosmology | 16 pages, no figures, presentation improved | Phys. Rev. D 98, 083507 (2018) | 10.1103/PhysRevD.98.083507 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Although the cosmological perturbations with inverse-volume corrections from
loop quantum cosmology have been studied using the anomaly-free algebra
approach in much of the literature, there still remains an important issue that
some counterterms in the perturbed constraints cannot be uniquely fixed on the
spatially ... | [
{
"created": "Sun, 2 Sep 2018 08:28:32 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Oct 2018 09:06:14 GMT",
"version": "v2"
}
] | 2018-10-18 | [
[
"Han",
"Yu",
""
]
] | Although the cosmological perturbations with inverse-volume corrections from loop quantum cosmology have been studied using the anomaly-free algebra approach in much of the literature, there still remains an important issue that some counterterms in the perturbed constraints cannot be uniquely fixed on the spatially fl... |
0812.0034 | Tiago Gribl Lucas | R. Aldrovandi, Tiago Gribl Lucas and J. G. Pereira | Inertia and gravitation in teleparallel gravity | 13 pages, no figures. Version 2: presentation changes, including a
new title, to better express the results of the manuscript | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the fact that teleparallel gravity allows a separation between
gravitation and inertia, explicit expressions for the gravitational and the
inertial energy-momentum densities are obtained. It is shown that, like all
other fields of nature, gravitation alone has a tensorial energy-momentum
density which in a gene... | [
{
"created": "Sat, 29 Nov 2008 00:38:13 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Aug 2009 14:19:26 GMT",
"version": "v2"
}
] | 2009-08-14 | [
[
"Aldrovandi",
"R.",
""
],
[
"Lucas",
"Tiago Gribl",
""
],
[
"Pereira",
"J. G.",
""
]
] | Using the fact that teleparallel gravity allows a separation between gravitation and inertia, explicit expressions for the gravitational and the inertial energy-momentum densities are obtained. It is shown that, like all other fields of nature, gravitation alone has a tensorial energy-momentum density which in a genera... |
1801.07345 | George F. Chapline | G.Chapline and J. Barbieri | MACHO Messages from the Big Bang | 10 pages 1 figure | LHEP 01, 17 (2018) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present day mass spectrum for dark matter compact objects is calculated
based on the assumption that a uniform population of PBHs was created at a
definite red-shift, and that the mass spectrum evolved as a result of
gravitational radiation. The predicted present day spectrum extends over many
decades of mass and... | [
{
"created": "Mon, 22 Jan 2018 22:53:37 GMT",
"version": "v1"
},
{
"created": "Sat, 26 May 2018 00:04:17 GMT",
"version": "v2"
}
] | 2018-05-29 | [
[
"Chapline",
"G.",
""
],
[
"Barbieri",
"J.",
""
]
] | The present day mass spectrum for dark matter compact objects is calculated based on the assumption that a uniform population of PBHs was created at a definite red-shift, and that the mass spectrum evolved as a result of gravitational radiation. The predicted present day spectrum extends over many decades of mass and a... |
2008.05315 | Behnam Pourhassan | Robert B. Mann, Behnam Pourhassan, Prabir Rudra | Note on the thermodynamic stability of a black ring at quantum scales | 13 pages, 8 figures | Phys. Rev. D 103, 066015 (2021) | 10.1103/PhysRevD.103.066015 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, the thermodynamic properties of a thin black ring in AdS
space-time is explored when the size of the ring is comparable to quantum
scales. The angular momentum to mass ratio of this system has an upper limit,
which is the cosmological radius of the black ring. It is found that the small
black ring will... | [
{
"created": "Tue, 11 Aug 2020 17:34:28 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Mar 2021 15:57:29 GMT",
"version": "v2"
}
] | 2021-03-31 | [
[
"Mann",
"Robert B.",
""
],
[
"Pourhassan",
"Behnam",
""
],
[
"Rudra",
"Prabir",
""
]
] | In this paper, the thermodynamic properties of a thin black ring in AdS space-time is explored when the size of the ring is comparable to quantum scales. The angular momentum to mass ratio of this system has an upper limit, which is the cosmological radius of the black ring. It is found that the small black ring will b... |
2009.10983 | Aneta Wojnar | Aneta Wojnar | Lithium abundance is a gravitational model dependent quantity | 6 pages, 1 table, more details on Palatini gravity and stellar
structure added; version accepted to PRD | Phys. Rev. D 103, 044037 (2021) | 10.1103/PhysRevD.103.044037 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dependence of lithium abundance on modified gravity in low-mass stellar
objects is demonstrated. This may introduce an additional uncertainty to age
determination techniques of young stars and globular clusters if they rely on
the light element depletion method.
| [
{
"created": "Wed, 23 Sep 2020 07:47:30 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jan 2021 15:09:50 GMT",
"version": "v2"
}
] | 2021-02-24 | [
[
"Wojnar",
"Aneta",
""
]
] | The dependence of lithium abundance on modified gravity in low-mass stellar objects is demonstrated. This may introduce an additional uncertainty to age determination techniques of young stars and globular clusters if they rely on the light element depletion method. |
1508.04243 | Mahmood Roshan | Mahmood Roshan | Exact cosmological solutions for MOG | 8 pages, to appear in European Physical Journal C | null | 10.1140/epjc/s10052-015-3637-9 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find some new exact cosmological solutions for the covariant
scalar-tensor-vector gravity theory, the so-called MOdified Gravity (MOG). The
exact solution of the vacuum field equations has been derived. Also, for non
vacuum cases we have found some exact solutions with the aid of the Noether
symmetry approach. Mor... | [
{
"created": "Tue, 18 Aug 2015 08:41:45 GMT",
"version": "v1"
}
] | 2015-09-30 | [
[
"Roshan",
"Mahmood",
""
]
] | We find some new exact cosmological solutions for the covariant scalar-tensor-vector gravity theory, the so-called MOdified Gravity (MOG). The exact solution of the vacuum field equations has been derived. Also, for non vacuum cases we have found some exact solutions with the aid of the Noether symmetry approach. More ... |
1609.09398 | Nieng Tian | Nieng Tian | Analytic Solution to Geodesic Equations in Lema\^{i}tre-Tolman-Bondi
Metric | The conclusion is wrong | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we use the Taylor expansion method to solve the LTB metric.
| [
{
"created": "Thu, 29 Sep 2016 15:50:00 GMT",
"version": "v1"
},
{
"created": "Wed, 10 May 2017 17:01:45 GMT",
"version": "v2"
},
{
"created": "Sat, 20 May 2017 02:26:32 GMT",
"version": "v3"
}
] | 2017-05-23 | [
[
"Tian",
"Nieng",
""
]
] | In this paper, we use the Taylor expansion method to solve the LTB metric. |
1608.04669 | Abhik Kumar Sanyal Dr. | Subhra Debnath, Soumendra Nath Ruz, Ranajit Mandal, Abhik Kumar Sanyal | History of cosmic evolution with modified Gauss-Bonnet-dilatonic coupled
term | 13 pages, 5 figures, To appear in EPJC (2017) | null | 10.1140/epjc/s10052-017-4877-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gauss-Bonnet-dilatonic coupling in four dimension plays an important role to
explain late time cosmic evolution. However, this term is an outcome of low
energy string effective action and thus ought to be important in the early
universe too. Unfortunately, phase-space formulation of such a theory does not
exist in th... | [
{
"created": "Tue, 16 Aug 2016 16:44:45 GMT",
"version": "v1"
},
{
"created": "Mon, 15 May 2017 03:43:40 GMT",
"version": "v2"
}
] | 2017-05-16 | [
[
"Debnath",
"Subhra",
""
],
[
"Ruz",
"Soumendra Nath",
""
],
[
"Mandal",
"Ranajit",
""
],
[
"Sanyal",
"Abhik Kumar",
""
]
] | Gauss-Bonnet-dilatonic coupling in four dimension plays an important role to explain late time cosmic evolution. However, this term is an outcome of low energy string effective action and thus ought to be important in the early universe too. Unfortunately, phase-space formulation of such a theory does not exist in the ... |
gr-qc/9607028 | Jose-Luis Rosales | Jose-Luis Rosales | Remarks on the issue of time and complex numbers in canonical quantum
gravity | Typewritten using RevTex, to appear in Phys. Rev. D | Phys.Rev.D54:4185-4188,1996 | 10.1103/PhysRevD.54.4185 | FR-THEP 96/13 | gr-qc | null | We develop the idea that, as a result of the arbitrariness of the factor
ordering in Wheeler-DeWitt equation, gauge phases can not, in general, being
completely removed from the wave functional in quantum gravity. The latter may
be conveniently described by means of a remnant complex term in WDW equation
depending of... | [
{
"created": "Fri, 12 Jul 1996 15:04:48 GMT",
"version": "v1"
}
] | 2011-09-09 | [
[
"Rosales",
"Jose-Luis",
""
]
] | We develop the idea that, as a result of the arbitrariness of the factor ordering in Wheeler-DeWitt equation, gauge phases can not, in general, being completely removed from the wave functional in quantum gravity. The latter may be conveniently described by means of a remnant complex term in WDW equation depending of t... |
2305.08910 | Matt Visser | Joshua Baines (Victoria University of Wellington) and Matt Visser
(Victoria University of Wellington) | Explicit formulae for surface gravities in stationary circular
axi-symmetric spacetimes | V1:24 pages; V2: several references added; minor changes in phrasing;
no physics changes | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using minimalist assumptions we develop a natural functional decomposition
for the spacetime metric, and explicit tractable formulae for the surface
gravities, in arbitrary stationary circular (PT symmetric) axisymmetric
spacetimes. We relate rigidity results, (the existence of a Killing horizon),
and the zeroth law ... | [
{
"created": "Mon, 15 May 2023 18:00:03 GMT",
"version": "v1"
},
{
"created": "Sun, 28 May 2023 01:57:31 GMT",
"version": "v2"
}
] | 2023-05-30 | [
[
"Baines",
"Joshua",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | Using minimalist assumptions we develop a natural functional decomposition for the spacetime metric, and explicit tractable formulae for the surface gravities, in arbitrary stationary circular (PT symmetric) axisymmetric spacetimes. We relate rigidity results, (the existence of a Killing horizon), and the zeroth law to... |
1009.1214 | Sun ChengYi | Cheng-Yi Sun and Rui-Hong Yue | New Interaction between Dark Energy and Dark Matter Changes Sign during
Cosmological Evolution | 16 pages, 3 figure, 1 table. Final version in PRD | Phys. Rev. D 85 (2012), 043010 | 10.1103/PhysRevD.85.043010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is found by Cai and Su that the interaction between dark energy and cold
dark matter is likely to change the sign during the cosmological evolution.
Motivated by this, we suggest a new form of interaction between dark energy and
dark matter, which changes from negative to positive as the expansion of our
universe ... | [
{
"created": "Tue, 7 Sep 2010 07:42:22 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Nov 2010 13:26:47 GMT",
"version": "v2"
},
{
"created": "Wed, 16 Mar 2011 14:17:56 GMT",
"version": "v3"
},
{
"created": "Wed, 21 Mar 2012 10:05:19 GMT",
"version": "v4"
}
] | 2013-05-30 | [
[
"Sun",
"Cheng-Yi",
""
],
[
"Yue",
"Rui-Hong",
""
]
] | It is found by Cai and Su that the interaction between dark energy and cold dark matter is likely to change the sign during the cosmological evolution. Motivated by this, we suggest a new form of interaction between dark energy and dark matter, which changes from negative to positive as the expansion of our universe ch... |
2012.08239 | Tiberiu Harko | Man Kwong Mak, Chun Sing Leung, Tiberiu Harko | The effects of the dark energy on the static Schr\"{o}dinger-Newton
system -- an Adomian Decomposition Method and Pad\'{e} approximants based
approach | 17 pages, 7 figures, accepted for publication in Modern Physics
Letters A | Modern Physics Letters A Vol. 36, No. 6 (2021) 2150038 | 10.1142/S0217732321500383 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Schr\"{o}dinger-Newton system is a nonlinear system obtained by coupling
together the linear Schr\"{o}dinger equation of quantum mechanics with the
Poisson equation of Newtonian mechanics. In the present work we will
investigate the effects of a cosmological constant (dark energy or vacuum
fluctuation) on the Sch... | [
{
"created": "Tue, 15 Dec 2020 12:18:02 GMT",
"version": "v1"
}
] | 2021-03-09 | [
[
"Mak",
"Man Kwong",
""
],
[
"Leung",
"Chun Sing",
""
],
[
"Harko",
"Tiberiu",
""
]
] | The Schr\"{o}dinger-Newton system is a nonlinear system obtained by coupling together the linear Schr\"{o}dinger equation of quantum mechanics with the Poisson equation of Newtonian mechanics. In the present work we will investigate the effects of a cosmological constant (dark energy or vacuum fluctuation) on the Schr\... |
0806.4755 | Albert V. Minkevich | A.S. Garkun, V.I. Kudin and A.V. Minkevich | Analysis of regular inflationary cosmological models with two torsion
functions in Poincare gauge theory of gravity | 13 pages, 16 figures | Int.J.Mod.Phys.A25:2005-2022,2010 | 10.1142/S0217751X10048433 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Analysis of regular inflationary cosmological models with two torsion
functions filled with scalar field with quadratic potential and
ultrarelativistic matter is carried out numerically. Properties of different
stages of regular inflationary cosmological solutions are studied, restrictions
on admissible values of par... | [
{
"created": "Sun, 29 Jun 2008 12:46:08 GMT",
"version": "v1"
}
] | 2014-11-18 | [
[
"Garkun",
"A. S.",
""
],
[
"Kudin",
"V. I.",
""
],
[
"Minkevich",
"A. V.",
""
]
] | Analysis of regular inflationary cosmological models with two torsion functions filled with scalar field with quadratic potential and ultrarelativistic matter is carried out numerically. Properties of different stages of regular inflationary cosmological solutions are studied, restrictions on admissible values of param... |
2408.05999 | Chris Stevens | Breanna Camden, Chris Stevens, John Forbes | Non-linear scattering of plane gravitational and electromagnetic waves | 40 pages, 22 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Fully non-linear, plane-symmetric exact solutions of the Einstein equations
describing the scattering of gravitational and electromagnetic waves have
existed for many years. For these closed-form solutions to be found, idealized
wave profiles such as the Dirac delta and Heaviside theta functions must be
assumed. Alth... | [
{
"created": "Mon, 12 Aug 2024 08:48:50 GMT",
"version": "v1"
}
] | 2024-08-13 | [
[
"Camden",
"Breanna",
""
],
[
"Stevens",
"Chris",
""
],
[
"Forbes",
"John",
""
]
] | Fully non-linear, plane-symmetric exact solutions of the Einstein equations describing the scattering of gravitational and electromagnetic waves have existed for many years. For these closed-form solutions to be found, idealized wave profiles such as the Dirac delta and Heaviside theta functions must be assumed. Althou... |
1808.10686 | Burin Gumjudpai | Candrasyah Muhammad (IF Naresuan), Somphoach Saichaemchan (IF
Naresuan) and Burin Gumjudpai (IF Naresuan) | Palatini NMDC gravity: cosmological scalar field phase portraits in
exponential potential | 4 pages, 2 figures, SPC 2018 Conference Paper, to appear in Jour. of
Phys. Conf. Series | Journal of Physics: Conference Series (2018) 1144:012128 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider cosmological scalar field evolving under exponential potential of
the Non-minimal Derivative Coupling (NMDC) gravity model in Palatini formalism.
Slow-roll regime is assumed. GR and metric formalism NMDC cases are compared in
this study. Phase portraits show that Palatini NMDC effect restricts
acceleratio... | [
{
"created": "Fri, 31 Aug 2018 11:21:05 GMT",
"version": "v1"
}
] | 2019-07-24 | [
[
"Muhammad",
"Candrasyah",
"",
"IF Naresuan"
],
[
"Saichaemchan",
"Somphoach",
"",
"IF\n Naresuan"
],
[
"Gumjudpai",
"Burin",
"",
"IF Naresuan"
]
] | We consider cosmological scalar field evolving under exponential potential of the Non-minimal Derivative Coupling (NMDC) gravity model in Palatini formalism. Slow-roll regime is assumed. GR and metric formalism NMDC cases are compared in this study. Phase portraits show that Palatini NMDC effect restricts acceleration ... |
gr-qc/0205082 | Brian D. Baker | Brian D. Baker (University of Florida) | Binary Black Holes in Quasi-Stationary Circular Orbits | 9 pages, 8 figures | null | null | null | gr-qc | null | We propose a method of determining solutions to the constraint equations of
General Relativity approximately describing binary black holes in
quasi-stationary circular orbits. Black holes with arbitrary linear momenta are
constructed in the manner suggested by Brandt and Brugmann. The
quasi-stationary circular orbits... | [
{
"created": "Sat, 18 May 2002 15:50:08 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Baker",
"Brian D.",
"",
"University of Florida"
]
] | We propose a method of determining solutions to the constraint equations of General Relativity approximately describing binary black holes in quasi-stationary circular orbits. Black holes with arbitrary linear momenta are constructed in the manner suggested by Brandt and Brugmann. The quasi-stationary circular orbits a... |
1312.2326 | Hirotaka Yoshino | Hirotaka Yoshino, Hideo Kodama | Gravitational radiation from an axion cloud around a black hole:
Superradiant phase | 31 pages, 10 figures | Prog. Theor. Exp. Phys. (2014) 043E02 | 10.1093/ptep/ptu029 | KEK-TH-1694 | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by possible existence of string axions with ultralight masses, we
study gravitational radiation from an axion cloud around a rotating black hole
(BH). The axion cloud extracts the rotation energy of the BH by superradiant
instability, while it loses energy through the emission of gravitational waves
(GWs). ... | [
{
"created": "Mon, 9 Dec 2013 07:25:12 GMT",
"version": "v1"
}
] | 2014-06-05 | [
[
"Yoshino",
"Hirotaka",
""
],
[
"Kodama",
"Hideo",
""
]
] | Motivated by possible existence of string axions with ultralight masses, we study gravitational radiation from an axion cloud around a rotating black hole (BH). The axion cloud extracts the rotation energy of the BH by superradiant instability, while it loses energy through the emission of gravitational waves (GWs). In... |
2106.15016 | Joaqu\'in Sureda | Marco San Mart\'in and Joaquin Sureda | Pytearcat: PYthon TEnsor AlgebRa calCulATor | 23 pages, 20 figures. Accepted for publication in Astronomy and
Computing | null | 10.1016/j.ascom.2022.100572 | null | gr-qc physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper introduces the first release of Pytearcat, a Python package
developed to compute tensor algebra operations in the context of theoretical
physics, for instance, in general relativity. Given that working with tensors
can become a complex task, people often rely on computational tools to perform
tensor calcul... | [
{
"created": "Mon, 28 Jun 2021 22:58:22 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Aug 2021 20:33:03 GMT",
"version": "v2"
},
{
"created": "Tue, 5 Apr 2022 15:30:36 GMT",
"version": "v3"
}
] | 2022-04-06 | [
[
"Martín",
"Marco San",
""
],
[
"Sureda",
"Joaquin",
""
]
] | This paper introduces the first release of Pytearcat, a Python package developed to compute tensor algebra operations in the context of theoretical physics, for instance, in general relativity. Given that working with tensors can become a complex task, people often rely on computational tools to perform tensor calculat... |
gr-qc/9605070 | Maria Bento | M.C. Bento and O. Bertolami (IST Lisbon) | Topological Inflation in Dual Superstring Models | 12 pages, uuencoded gzipped tar format, Latex, 2 figures | Phys.Lett. B384 (1996) 98-102 | 10.1016/0370-2693(96)00767-8 | DF/IST-2.96 | gr-qc | null | We study the possibility of obtaining inflationary solutions from S-dual
superstring potentials. We find, in particular, that such solutions occur at
the core of domain walls separating degenerate minima whose positions differ by
modular transformations.
| [
{
"created": "Fri, 31 May 1996 10:47:16 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Bento",
"M. C.",
"",
"IST Lisbon"
],
[
"Bertolami",
"O.",
"",
"IST Lisbon"
]
] | We study the possibility of obtaining inflationary solutions from S-dual superstring potentials. We find, in particular, that such solutions occur at the core of domain walls separating degenerate minima whose positions differ by modular transformations. |
0807.0447 | Tomislav Prokopec | Tomas Janssen, Tomislav Prokopec (ITP, Utrecht University) | The graviton one-loop effective action in cosmological space-times with
constant deceleration | 37 pages, 1 figure. Revised version, including a proper treatment of
the infrared sector | Annals Phys.325:948-968,2010 | 10.1016/j.aop.2009.09.003 | ITP-UU-08/38, SPIN-08/29 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the quantum Friedmann equations which include one-loop vacuum
fluctuations due to gravitons and scalar field matter in a FLRW background with
constant $\epsilon=-{\dot{H}}/{H^2}$. After several field redefinitions, to
remove the mixing between the gravitational and matter degrees of freedom, we
can constr... | [
{
"created": "Wed, 2 Jul 2008 20:22:45 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Jun 2009 09:57:21 GMT",
"version": "v2"
}
] | 2010-04-22 | [
[
"Janssen",
"Tomas",
"",
"ITP, Utrecht University"
],
[
"Prokopec",
"Tomislav",
"",
"ITP, Utrecht University"
]
] | We consider the quantum Friedmann equations which include one-loop vacuum fluctuations due to gravitons and scalar field matter in a FLRW background with constant $\epsilon=-{\dot{H}}/{H^2}$. After several field redefinitions, to remove the mixing between the gravitational and matter degrees of freedom, we can construc... |
1506.05330 | Lorenzo Sebastiani | Lorenzo Sebastiani and Ratbay Myrzakulov | F(R) gravity and inflation | 19 pages, minor correction | Int.J.Geom.Meth.Mod.Phys. 12 (2015) no.09, 1530003 | 10.1142/S0219887815300032 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this short review, we revisit inflation in F(R)-gravity. We find several
F(R)-models for viable inflation by applying some reconstruction techniques. A
special attention is payed in the reproduction of the last Planck satellite
data. The possible generalizations of Starobinsky- like inflation are found and
discuss... | [
{
"created": "Mon, 15 Jun 2015 09:42:14 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Aug 2015 07:43:34 GMT",
"version": "v2"
},
{
"created": "Mon, 16 Nov 2015 13:33:33 GMT",
"version": "v3"
}
] | 2016-09-02 | [
[
"Sebastiani",
"Lorenzo",
""
],
[
"Myrzakulov",
"Ratbay",
""
]
] | In this short review, we revisit inflation in F(R)-gravity. We find several F(R)-models for viable inflation by applying some reconstruction techniques. A special attention is payed in the reproduction of the last Planck satellite data. The possible generalizations of Starobinsky- like inflation are found and discussed... |
2102.10100 | V. G. Gurzadyan | V.G. Gurzadyan, A. Stepanian | Hubble tension vs two flows | 9 pages, Eur. Phys. J. Plus (in press); to match the published
version | Eur. Phys. J. Plus 136, 235 (2021) | 10.1140/epjp/s13360-021-01229-x | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | The Hubble tension is shown to be solvable, without any free parameter,
conceptually and quantitatively, within the approach of modified weak-field
General Relativity involving the cosmological constant $\Lambda$. That approach
enables one to describe in a unified picture both the dynamics of dark matter
containing g... | [
{
"created": "Wed, 10 Feb 2021 16:17:26 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Mar 2021 04:37:19 GMT",
"version": "v2"
}
] | 2021-03-02 | [
[
"Gurzadyan",
"V. G.",
""
],
[
"Stepanian",
"A.",
""
]
] | The Hubble tension is shown to be solvable, without any free parameter, conceptually and quantitatively, within the approach of modified weak-field General Relativity involving the cosmological constant $\Lambda$. That approach enables one to describe in a unified picture both the dynamics of dark matter containing gal... |
gr-qc/0605036 | Mamdouh Wanas | M.I. Wanas and M.E. Kahil | Path Deviation Equations in AP-Geometry | LaTeX file, 6 pages | null | 10.1142/9789812704030_0128 | null | gr-qc math.DG | null | Recently, it has been shown that Absolute Parallelism (AP) geometry admits
paths that are naturally quantized. These paths have been used to describe the
motion of spinning particles in a background gravitational field. In case of a
weak static gravitational field limits, the paths are applied successfully to
interpr... | [
{
"created": "Sat, 6 May 2006 09:53:19 GMT",
"version": "v1"
}
] | 2016-11-09 | [
[
"Wanas",
"M. I.",
""
],
[
"Kahil",
"M. E.",
""
]
] | Recently, it has been shown that Absolute Parallelism (AP) geometry admits paths that are naturally quantized. These paths have been used to describe the motion of spinning particles in a background gravitational field. In case of a weak static gravitational field limits, the paths are applied successfully to interpret... |
2208.07249 | James Read | Emily Adlam and Niels Linnemann and James Read | Constructive Axiomatics in Spacetime Physics Part III: A Constructive
Axiomatic Approach to Quantum Spacetime | 43 pages; compiled on LuaTeX; critical feedback welcome | null | null | null | gr-qc physics.hist-ph | http://creativecommons.org/licenses/by-nc-nd/4.0/ | The Ehlers-Pirani-Schild (EPS) constructive axiomatisation of general
relativity, published in 1972, purports to build up the kinematical structure
of that theory from only axioms which have indubitable empirical content. It
is, therefore, of profound significance both to the epistemology and to the
metaphysics of sp... | [
{
"created": "Mon, 15 Aug 2022 15:04:21 GMT",
"version": "v1"
}
] | 2022-08-16 | [
[
"Adlam",
"Emily",
""
],
[
"Linnemann",
"Niels",
""
],
[
"Read",
"James",
""
]
] | The Ehlers-Pirani-Schild (EPS) constructive axiomatisation of general relativity, published in 1972, purports to build up the kinematical structure of that theory from only axioms which have indubitable empirical content. It is, therefore, of profound significance both to the epistemology and to the metaphysics of spac... |
2302.03050 | Emanuele Berti | Vishal Baibhav, Mark Ho-Yeuk Cheung, Emanuele Berti, Vitor Cardoso,
Gregorio Carullo, Roberto Cotesta, Walter Del Pozzo, Francisco Duque | Agnostic black hole spectroscopy: Quasinormal mode content of numerical
relativity waveforms and limits of validity of linear perturbation theory | 52 pages (with a short executive summary), 33 figures, 1 table.
Matches version published in PRD | null | 10.1103/PhysRevD.108.104020 | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole spectroscopy is the program to measure the complex
gravitational-wave frequencies of merger remnants, and to quantify their
agreement with the characteristic frequencies of black holes computed at linear
order in black hole perturbation theory. In a "weaker" (non-agnostic) version
of this test, one assumes... | [
{
"created": "Mon, 6 Feb 2023 19:00:01 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Nov 2023 16:44:05 GMT",
"version": "v2"
}
] | 2023-11-17 | [
[
"Baibhav",
"Vishal",
""
],
[
"Cheung",
"Mark Ho-Yeuk",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Carullo",
"Gregorio",
""
],
[
"Cotesta",
"Roberto",
""
],
[
"Del Pozzo",
"Walter",
""... | Black hole spectroscopy is the program to measure the complex gravitational-wave frequencies of merger remnants, and to quantify their agreement with the characteristic frequencies of black holes computed at linear order in black hole perturbation theory. In a "weaker" (non-agnostic) version of this test, one assumes t... |
2205.04138 | Bita Farsi | Bita Farsi, Ahmad Sheykhi | Growth of Perturbations in Tsallis and Barrow Cosmology | 10pages, 9figures | Eur. Phys. J. C 82, 1111 (2022) | 10.1140/epjc/s10052-022-11044-y | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We disclose the effects of the entropic corrections to the Friedmann
equations on the growth of perturbations in the early stages of the universe.
We consider two types of corrections to the area law of entropy, known as
Tsallis and Barrow entropies. Using these corrections to entropy, we derive the
modified Friedman... | [
{
"created": "Mon, 9 May 2022 09:28:06 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Nov 2022 14:50:04 GMT",
"version": "v2"
}
] | 2022-12-12 | [
[
"Farsi",
"Bita",
""
],
[
"Sheykhi",
"Ahmad",
""
]
] | We disclose the effects of the entropic corrections to the Friedmann equations on the growth of perturbations in the early stages of the universe. We consider two types of corrections to the area law of entropy, known as Tsallis and Barrow entropies. Using these corrections to entropy, we derive the modified Friedmann ... |
1005.0764 | Carlo Rovelli | Eugenio Bianchi, Daniele Regoli, Carlo Rovelli | Face amplitude of spinfoam quantum gravity | 5 pages, 2 figures | Class.Quant.Grav.27:185009,2010 | 10.1088/0264-9381/27/18/185009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The structure of the boundary Hilbert-space and the condition that amplitudes
behave appropriately under compositions determine the face amplitude of a
spinfoam theory. In quantum gravity the face amplitude turns out to be simpler
than originally thought.
| [
{
"created": "Wed, 5 May 2010 14:27:43 GMT",
"version": "v1"
}
] | 2011-03-28 | [
[
"Bianchi",
"Eugenio",
""
],
[
"Regoli",
"Daniele",
""
],
[
"Rovelli",
"Carlo",
""
]
] | The structure of the boundary Hilbert-space and the condition that amplitudes behave appropriately under compositions determine the face amplitude of a spinfoam theory. In quantum gravity the face amplitude turns out to be simpler than originally thought. |
gr-qc/0309049 | Winfried Zimdahl | Alexander B. Balakin, Veronika R. Kurbanova and Winfried Zimdahl | Parametric phenomena of the particle dynamics in a periodic
gravitational wave field | 26 pages, to be published in J. Math. Phys | J.Math.Phys.44:5120-5140,2003 | 10.1063/1.1617364 | null | gr-qc hep-ph math-ph math.MP | null | We establish exactly solvable models for the motion of neutral particles,
electrically charged point and spin particles (U(1) symmetry), isospin
particles (SU(2) symmetry), and particles with color charges (SU(3) symmetry)
in a gravitational wave background. Special attention is devoted to parametric
effects induced ... | [
{
"created": "Tue, 9 Sep 2003 07:01:21 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Balakin",
"Alexander B.",
""
],
[
"Kurbanova",
"Veronika R.",
""
],
[
"Zimdahl",
"Winfried",
""
]
] | We establish exactly solvable models for the motion of neutral particles, electrically charged point and spin particles (U(1) symmetry), isospin particles (SU(2) symmetry), and particles with color charges (SU(3) symmetry) in a gravitational wave background. Special attention is devoted to parametric effects induced by... |
1908.04234 | Justin Ripley | Justin L. Ripley | Excision and avoiding the use of boundary conditions in numerical
relativity | 19 pages, 9 figures, section added | null | 10.1088/1361-6382/ab51a7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A procedure for evolving hyperbolic systems of equations on compact
computational domains with no boundary conditions was recently described in
[arXiv:1905.08657]. In that proposal, the computational grid is expanded in
spacelike directions with respect to the outermost characteristic and initial
data is imposed on t... | [
{
"created": "Mon, 12 Aug 2019 16:41:55 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Oct 2019 20:01:39 GMT",
"version": "v2"
},
{
"created": "Tue, 19 Nov 2019 15:43:46 GMT",
"version": "v3"
}
] | 2019-11-20 | [
[
"Ripley",
"Justin L.",
""
]
] | A procedure for evolving hyperbolic systems of equations on compact computational domains with no boundary conditions was recently described in [arXiv:1905.08657]. In that proposal, the computational grid is expanded in spacelike directions with respect to the outermost characteristic and initial data is imposed on the... |
2308.13206 | Sagar Soni V | A. H. Hasmani, Sagar V. Soni and Ravi Panchal | Electromagnetic Multipoles for Morris-Thorne Wormhole | 11 pages | null | null | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | Wormholes are interesting space-time structures connecting two asymptotic
regions found in a universe or multiverse and are solutions to Einstein's field
equations. These objects have many interesting features as far as physics is
concerned. Morris and Thorne introduced traversable wormholes, which increases
the poss... | [
{
"created": "Fri, 25 Aug 2023 07:03:29 GMT",
"version": "v1"
}
] | 2023-08-28 | [
[
"Hasmani",
"A. H.",
""
],
[
"Soni",
"Sagar V.",
""
],
[
"Panchal",
"Ravi",
""
]
] | Wormholes are interesting space-time structures connecting two asymptotic regions found in a universe or multiverse and are solutions to Einstein's field equations. These objects have many interesting features as far as physics is concerned. Morris and Thorne introduced traversable wormholes, which increases the possib... |
2001.01301 | Ramit Dey | Ramit Dey, Sumanta Chakraborty, Niayesh Afshordi | Echoes from the braneworld black holes | published version | Phys. Rev. D 101, 104014 (2020) | 10.1103/PhysRevD.101.104014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The holographic interpretation of the Randall-Sundrum model based on the
adaptation of the AdS/CFT correspondence to the braneworld scenario states that
the black holes localized on the brane are {\it quantum corrected}. This can be
better understood from the fact that the classical $AdS_{5}$ bulk dynamics is
dual to... | [
{
"created": "Sun, 5 Jan 2020 19:45:21 GMT",
"version": "v1"
},
{
"created": "Wed, 13 May 2020 04:53:19 GMT",
"version": "v2"
}
] | 2020-05-20 | [
[
"Dey",
"Ramit",
""
],
[
"Chakraborty",
"Sumanta",
""
],
[
"Afshordi",
"Niayesh",
""
]
] | The holographic interpretation of the Randall-Sundrum model based on the adaptation of the AdS/CFT correspondence to the braneworld scenario states that the black holes localized on the brane are {\it quantum corrected}. This can be better understood from the fact that the classical $AdS_{5}$ bulk dynamics is dual to g... |
gr-qc/0701042 | Lorenzo Iorio | Lorenzo Iorio | Testing frame-dragging with the Mars Global Surveyor spacecraft in the
gravitational field of Mars | Latex2e, 12 pages, no figures, 3 tables, 51 references. Refined
calculation of the average orbit error. New value for mu. Terminology
improved. References added. Sectioning improved. Important considerations in
the Conclusions added. New material added about a linear fit | L. Iorio (ed.) The Measurement of Gravitomagnetism: A Challenging
Enterprise, Chap. 12.2, pp. 183-186, NOVA Publishers, Hauppauge (NY), 2007. | null | null | gr-qc astro-ph hep-ph physics.geo-ph physics.space-ph | null | In this paper we propose an interpretation of the time series of the RMS
overlap differences of the out-of-plane part $N$ of the orbit of the Martian
polar orbiter Mars Global Surveyor (MGS) over a time span Delta P of about 5
years (14 November 1999-14 January 2005) in terms of the general relativistic
gravitomagnet... | [
{
"created": "Sat, 6 Jan 2007 17:14:37 GMT",
"version": "v1"
},
{
"created": "Mon, 14 May 2007 17:45:45 GMT",
"version": "v10"
},
{
"created": "Thu, 11 Jan 2007 17:47:54 GMT",
"version": "v2"
},
{
"created": "Tue, 16 Jan 2007 22:29:07 GMT",
"version": "v3"
},
{
"c... | 2008-02-12 | [
[
"Iorio",
"Lorenzo",
""
]
] | In this paper we propose an interpretation of the time series of the RMS overlap differences of the out-of-plane part $N$ of the orbit of the Martian polar orbiter Mars Global Surveyor (MGS) over a time span Delta P of about 5 years (14 November 1999-14 January 2005) in terms of the general relativistic gravitomagnetic... |
1907.03091 | Paolo Pani | Elisa Maggio, Adriano Testa, Swetha Bhagwat, Paolo Pani | Analytical model for gravitational-wave echoes from spinning remnants | 13+5 pages, 7 figures. Template and waveforms available at
https://www.darkgra.org/gw-echo-catalogue.html v2: extended discussion and
improvements. v3: matches published version and corrects a typo. arXiv admin
note: text overlap with arXiv:1806.04253 | Phys. Rev. D 100, 064056 (2019) | 10.1103/PhysRevD.100.064056 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave echoes in the post-merger signal of a binary coalescence
are predicted in various scenarios, including near-horizon quantum structures,
exotic states of matter in ultracompact stars, and certain deviations from
general relativity. The amplitude and frequency of each echo is modulated by
the photon-... | [
{
"created": "Sat, 6 Jul 2019 07:14:11 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Sep 2019 08:44:03 GMT",
"version": "v2"
},
{
"created": "Mon, 7 Oct 2019 08:38:16 GMT",
"version": "v3"
}
] | 2019-10-10 | [
[
"Maggio",
"Elisa",
""
],
[
"Testa",
"Adriano",
""
],
[
"Bhagwat",
"Swetha",
""
],
[
"Pani",
"Paolo",
""
]
] | Gravitational-wave echoes in the post-merger signal of a binary coalescence are predicted in various scenarios, including near-horizon quantum structures, exotic states of matter in ultracompact stars, and certain deviations from general relativity. The amplitude and frequency of each echo is modulated by the photon-sp... |
gr-qc/9912111 | Vladimir M. Khatsymovsky | Vladimir M. Khatsymovsky | Path integral in the simplest Regge calculus model | LaTeX, 10 pages | Phys.Lett. B484 (2000) 160-166 | 10.1016/S0370-2693(00)00617-1 | null | gr-qc | null | The simplest (3+1)D Regge calculus model (with three-dimensional discrete
space and continuous time) is considered which describes evolution of the
simplest closed two-tetrahedron piecewise flat manifold in the continuous time.
The measure in the path integral which describes canonical quantisation of the
model in te... | [
{
"created": "Tue, 28 Dec 1999 13:28:49 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Khatsymovsky",
"Vladimir M.",
""
]
] | The simplest (3+1)D Regge calculus model (with three-dimensional discrete space and continuous time) is considered which describes evolution of the simplest closed two-tetrahedron piecewise flat manifold in the continuous time. The measure in the path integral which describes canonical quantisation of the model in term... |
gr-qc/0202066 | S. Mignemi | M. Cadoni and S. Mignemi | Cosmology of the Jackiw-Teitelboim model | 10 pages, plain LaTeX, some solutions added | Gen.Rel.Grav. 34 (2002) 2101-2109 | 10.1023/A:1021135501942 | INFNCA-TH0202 | gr-qc | null | We investigate the cosmology of the two-dimensional Jackiw-Teitelboim model.
Since the matter coupling is not defined uniquely, we consider two possible
choices. The dilaton field plays an important role in the discussion of the
properties of the solutions. In particular, the possibility of universes having
a finite ... | [
{
"created": "Mon, 18 Feb 2002 16:45:53 GMT",
"version": "v1"
},
{
"created": "Tue, 21 May 2002 15:53:57 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Cadoni",
"M.",
""
],
[
"Mignemi",
"S.",
""
]
] | We investigate the cosmology of the two-dimensional Jackiw-Teitelboim model. Since the matter coupling is not defined uniquely, we consider two possible choices. The dilaton field plays an important role in the discussion of the properties of the solutions. In particular, the possibility of universes having a finite in... |
1212.6701 | Tomohiro Harada | Hiroya Nemoto, Umpei Miyamoto, Tomohiro Harada and Takafumi Kokubu | Escape of superheavy and highly energetic particles produced by particle
collisions near maximally charged black holes | 10 pages, minor correction, accepted for publication in Physical
Review D | Phys.Rev.D87:127502,2013 | 10.1103/PhysRevD.87.127502 | RUP-12-13 | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For particle collision near rapidly rotating Kerr black holes, the
center-of-mass energy can be arbitrarily high if the angular momentum of either
of the colliding particles is fine-tuned. Recently, it has been shown that
particles which are produced by such a particle collision and escape to
infinity cannot be very ... | [
{
"created": "Sun, 30 Dec 2012 10:45:54 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Jan 2013 12:22:37 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Jun 2013 02:53:49 GMT",
"version": "v3"
}
] | 2013-11-13 | [
[
"Nemoto",
"Hiroya",
""
],
[
"Miyamoto",
"Umpei",
""
],
[
"Harada",
"Tomohiro",
""
],
[
"Kokubu",
"Takafumi",
""
]
] | For particle collision near rapidly rotating Kerr black holes, the center-of-mass energy can be arbitrarily high if the angular momentum of either of the colliding particles is fine-tuned. Recently, it has been shown that particles which are produced by such a particle collision and escape to infinity cannot be very ma... |
1605.08293 | Pedro V. P. Cunha | Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu, Helgi F.
Runarsson | Shadows of Kerr black holes with and without scalar hair | 15 pages, 8 figures. To appear in a Special Issue of the IJMPD on
Selected Papers of the III Amazonian Symposium on Physics (Eds. C. Herdeiro,
E. Berti, V. Cardoso, L. C. Crispino, L. Gualtieri and U. Sperhake) | null | 10.1142/S0218271816410212 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For an observer, the Black Hole (BH) shadow is the BH's apparent image in the
sky due to the gravitational lensing of nearby radiation, emitted by an
external source. A recent class of solutions dubbed Kerr BHs with scalar hair
possess smaller shadows than the corresponding Kerr BHs and, under some
conditions, novel ... | [
{
"created": "Thu, 26 May 2016 14:14:18 GMT",
"version": "v1"
}
] | 2016-08-17 | [
[
"Cunha",
"Pedro V. P.",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
],
[
"Runarsson",
"Helgi F.",
""
]
] | For an observer, the Black Hole (BH) shadow is the BH's apparent image in the sky due to the gravitational lensing of nearby radiation, emitted by an external source. A recent class of solutions dubbed Kerr BHs with scalar hair possess smaller shadows than the corresponding Kerr BHs and, under some conditions, novel ex... |
2206.06899 | Indrani Banerjee | Indrani Banerjee | Signatures of regular black holes from the quasar continuum spectrum | 22 pages, 6 figures | null | 10.1140/epjc/s10052-023-11320-5 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Regular black holes arising in Einstein gravity coupled to non-linear
electrodynamics are worth studying as they can circumvent the r = 0 curvature
singularity arising in general relativity. In this work we explore the
signatures of regular black holes with a Minkowski core from the quasar
continuum spectrum. We use ... | [
{
"created": "Tue, 14 Jun 2022 14:55:23 GMT",
"version": "v1"
}
] | 2023-03-22 | [
[
"Banerjee",
"Indrani",
""
]
] | Regular black holes arising in Einstein gravity coupled to non-linear electrodynamics are worth studying as they can circumvent the r = 0 curvature singularity arising in general relativity. In this work we explore the signatures of regular black holes with a Minkowski core from the quasar continuum spectrum. We use th... |
2312.02049 | Zhongyou Mo | Zhongyou Mo | Gravitational-electromagnetic phase in the Kerr-Newman spacetime | 12 pages, 1 figure | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the gravitational-electromagnetic phase for a charged particle
in the Kerr-Newman spacetime. The result is applied to an interference
experiment, in which the phase differences and the fringe shifts are derived.
We find that both the charge of the particle and the charge of the black hole
contribute to t... | [
{
"created": "Mon, 4 Dec 2023 17:07:13 GMT",
"version": "v1"
}
] | 2023-12-05 | [
[
"Mo",
"Zhongyou",
""
]
] | We calculate the gravitational-electromagnetic phase for a charged particle in the Kerr-Newman spacetime. The result is applied to an interference experiment, in which the phase differences and the fringe shifts are derived. We find that both the charge of the particle and the charge of the black hole contribute to the... |
2309.13778 | Yun Soo Myung | Yun Soo Myung | Scalarized black holes in new massive gravity dressed by a nonminimally
coupled scalar | 15 pages, 5 figures, version to appear EPJC | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate scalarized black holes in new massive gravity dressed by a
nonminimally coupled scalar. For this purpose, we find the Gregory-Laflamme
(GL) and tachyonic instability bounds of bald BTZ black hole expressed in terms
of $ m^2$ a massive spin-2 parameter and $\alpha$ a scalar coupling parameter
to Ricci s... | [
{
"created": "Sun, 24 Sep 2023 23:27:29 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Dec 2023 22:32:40 GMT",
"version": "v2"
}
] | 2023-12-05 | [
[
"Myung",
"Yun Soo",
""
]
] | We investigate scalarized black holes in new massive gravity dressed by a nonminimally coupled scalar. For this purpose, we find the Gregory-Laflamme (GL) and tachyonic instability bounds of bald BTZ black hole expressed in terms of $ m^2$ a massive spin-2 parameter and $\alpha$ a scalar coupling parameter to Ricci sca... |
gr-qc/9806106 | Jose Navarro Salas | J. Cruz, J. Navarro-Salas and M. Navarro | Free Fields for Chiral 2D Dilaton Gravity | LaTeX file, 4 pages, to appear in Phys. Rev. D | Phys.Rev. D58 (1998) 087501 | 10.1103/PhysRevD.58.087501 | null | gr-qc | null | We give an explicit canonical transformation which transforms a generic
chiral 2D dilaton gravity model into a free field theory.
| [
{
"created": "Fri, 26 Jun 1998 16:56:04 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Cruz",
"J.",
""
],
[
"Navarro-Salas",
"J.",
""
],
[
"Navarro",
"M.",
""
]
] | We give an explicit canonical transformation which transforms a generic chiral 2D dilaton gravity model into a free field theory. |
2203.15815 | Sayantan Choudhury | Sayantan Choudhury, Sudhakar Panda, Nilesh Pandey, Abhishek Roy | Four-mode squeezed states in de Sitter space: A study with two field
interacting quantum system | 22 pages, 6 figures, Accepted for publication in Fortschritte der
Physik - Progress of Physics | Fortsch.Phys. 70 (2022) 12, 2200124 | 10.1002/prop.202200124 | null | gr-qc hep-ph hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the application of four-mode squeezed states in the
cosmological context, studying two weakly coupled scalar fields in the planar
patch of the de Sitter space. We construct the four-mode squeezed state
formalism and connect this concept with the Hamiltonian of the two coupled
inverted harmonic ... | [
{
"created": "Tue, 29 Mar 2022 18:00:02 GMT",
"version": "v1"
},
{
"created": "Sun, 21 Aug 2022 13:48:17 GMT",
"version": "v2"
}
] | 2022-12-13 | [
[
"Choudhury",
"Sayantan",
""
],
[
"Panda",
"Sudhakar",
""
],
[
"Pandey",
"Nilesh",
""
],
[
"Roy",
"Abhishek",
""
]
] | In this paper we study the application of four-mode squeezed states in the cosmological context, studying two weakly coupled scalar fields in the planar patch of the de Sitter space. We construct the four-mode squeezed state formalism and connect this concept with the Hamiltonian of the two coupled inverted harmonic os... |
1305.5231 | Charis Anastopoulos | C. Anastopoulos and B. L. Hu | A Master Equation for Gravitational Decoherence: Probing the Textures of
Spacetime | 24 pages. Minor changes, version to appear in Class. Quant. Grav | Class. Quantum Grav. 30 165007 (2013) | 10.1088/0264-9381/30/16/165007 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a first principles derivation of a master equation for the evolution
of a quantum matter field in a linearly perturbed Minkowski spacetime, based
solely on quantum field theory and general relativity. We make no additional
assumptions nor introduce extra ingredients, as is often done in alternative
quantum th... | [
{
"created": "Wed, 22 May 2013 19:04:11 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Jun 2013 07:18:51 GMT",
"version": "v2"
},
{
"created": "Sun, 14 Jul 2013 13:58:51 GMT",
"version": "v3"
}
] | 2015-06-16 | [
[
"Anastopoulos",
"C.",
""
],
[
"Hu",
"B. L.",
""
]
] | We give a first principles derivation of a master equation for the evolution of a quantum matter field in a linearly perturbed Minkowski spacetime, based solely on quantum field theory and general relativity. We make no additional assumptions nor introduce extra ingredients, as is often done in alternative quantum theo... |
1407.1026 | John W. Moffat | J. W. Moffat | Gravitational Entropy and the Second Law of Thermodynamics | 4 pages, no figures | Entropy 17, 8341 (2015) | 10.3390/e17127883 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spontaneous violation of Lorentz and diffeomorphism invariance in a phase
near the big bang lowers the entropy, allowing for an arrow of time and the
second law of thermodynamics. The spontaneous symmetry breaking leads to
$O(3,1)\rightarrow O(3)\times R$, where $O(3)$ is the rotational symmetry of
the Friedmann-... | [
{
"created": "Thu, 3 Jul 2014 19:37:42 GMT",
"version": "v1"
}
] | 2016-03-08 | [
[
"Moffat",
"J. W.",
""
]
] | The spontaneous violation of Lorentz and diffeomorphism invariance in a phase near the big bang lowers the entropy, allowing for an arrow of time and the second law of thermodynamics. The spontaneous symmetry breaking leads to $O(3,1)\rightarrow O(3)\times R$, where $O(3)$ is the rotational symmetry of the Friedmann-Le... |
2312.02868 | Loris Amalberti | Loris Amalberti, Fran\c{c}ois Larrouturou and Zixin Yang | Multipole expansion at the level of the action in $d$-dimensions | 26 pages, v2: typos corrected, published version | null | 10.1103/PhysRevD.109.104027 | DESY-23-200 | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper we study the multipole expansion of the long-wavelength
effective action for radiative sources in ($d$+1) spacetime dimensions. We
present detailed expressions for the multipole moments for the case of scalar-,
electromagnetic-, and (linearized) gravitational-wave emission. For
electromagnetism and grav... | [
{
"created": "Tue, 5 Dec 2023 16:31:26 GMT",
"version": "v1"
},
{
"created": "Mon, 27 May 2024 12:08:12 GMT",
"version": "v2"
}
] | 2024-05-28 | [
[
"Amalberti",
"Loris",
""
],
[
"Larrouturou",
"François",
""
],
[
"Yang",
"Zixin",
""
]
] | In this paper we study the multipole expansion of the long-wavelength effective action for radiative sources in ($d$+1) spacetime dimensions. We present detailed expressions for the multipole moments for the case of scalar-, electromagnetic-, and (linearized) gravitational-wave emission. For electromagnetism and gravit... |
1911.04182 | Shaoqi Hou | Shaoqi Hou, Xi-Long Fan, Zong-Hong Zhu | Corrections to the gravitational wave phasing | 12 pages, 2 figures. Match the published version | Phys. Rev. D 101, 084052 (2020) | 10.1103/PhysRevD.101.084052 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational wave, traveling a long cosmological distance to reach
interferometers, interacts with the (homogeneous and isotropic) cosmological
background, so generally speaking, its amplitude and phase are modified in some
nontrivial way. As the sensitivity of interferometers is improved, one may
detect correct... | [
{
"created": "Mon, 11 Nov 2019 11:09:50 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Apr 2020 01:49:39 GMT",
"version": "v2"
}
] | 2020-04-27 | [
[
"Hou",
"Shaoqi",
""
],
[
"Fan",
"Xi-Long",
""
],
[
"Zhu",
"Zong-Hong",
""
]
] | The gravitational wave, traveling a long cosmological distance to reach interferometers, interacts with the (homogeneous and isotropic) cosmological background, so generally speaking, its amplitude and phase are modified in some nontrivial way. As the sensitivity of interferometers is improved, one may detect correctio... |
gr-qc/9807011 | Ioan Vancea | C. Ciuhu and I. V. Vancea | Constraints on spacetime manifold in Euclidean supergravity in terms of
Dirac eigenvalues | 14 pages, REVTeX file | Int.J.Mod.Phys. A15 (2000) 2093-2104 | 10.1142/S0217751X00000860 | null | gr-qc hep-th | null | We generalize previous work on Dirac eigenvalues as dynamical variables of
Euclidean supergravity. The most general set of constraints on the curvatures
of the tangent bundle and on the spinor bundle of the spacetime manifold under
which spacetime admits Dirac eigenvalues as observables, are derived.
| [
{
"created": "Mon, 6 Jul 1998 08:56:30 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Ciuhu",
"C.",
""
],
[
"Vancea",
"I. V.",
""
]
] | We generalize previous work on Dirac eigenvalues as dynamical variables of Euclidean supergravity. The most general set of constraints on the curvatures of the tangent bundle and on the spinor bundle of the spacetime manifold under which spacetime admits Dirac eigenvalues as observables, are derived. |
gr-qc/9604028 | Arkady A. Popov | Yu. Ignat'ev, A. Popov (Kazan State Pedagogical University) | Spherically Symmetric Perturbation of Ultrarelativistic Fluid in
Homogeneous and Isotropic Universe | 8 pages, LaTex, no figures | null | 10.1016/0375-9601(96)00524-5 | null | gr-qc astro-ph | null | A solution of the linearized Einstein's equations for a spherically symmetric
perturbation of the ultrarelativistic fluid in the homogeneous and isotropic
universe is obtained. Conditions on the boundary of the perturbation are
discussed. The examples of particle-like and wave-like solutions are given.
| [
{
"created": "Thu, 11 Apr 1996 13:46:40 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Ignat'ev",
"Yu.",
"",
"Kazan State Pedagogical University"
],
[
"Popov",
"A.",
"",
"Kazan State Pedagogical University"
]
] | A solution of the linearized Einstein's equations for a spherically symmetric perturbation of the ultrarelativistic fluid in the homogeneous and isotropic universe is obtained. Conditions on the boundary of the perturbation are discussed. The examples of particle-like and wave-like solutions are given. |
2108.01970 | Nikolaos Dimakis | N. Dimakis, A. Paliathanasis and T. Christodoulakis | Quantum Cosmology in $f(Q)$ theory | Latex2e source file, 33 pages, 2 figures, accepted in CQG | Class. Quantum Grav. 38, 225003 (2021) | 10.1088/1361-6382/ac2b09 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use Dirac's method for the quantization of constrained systems in order to
quantize a spatially flat Friedmann-Lema\^{i}tre-Robertson-Walker spacetime in
the context of $f(Q)$ cosmology. When the coincident gauge is considered, the
resulting minisuperspace system possesses second class constraints. This
distinguis... | [
{
"created": "Wed, 4 Aug 2021 11:23:17 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Sep 2021 03:01:03 GMT",
"version": "v2"
}
] | 2021-10-22 | [
[
"Dimakis",
"N.",
""
],
[
"Paliathanasis",
"A.",
""
],
[
"Christodoulakis",
"T.",
""
]
] | We use Dirac's method for the quantization of constrained systems in order to quantize a spatially flat Friedmann-Lema\^{i}tre-Robertson-Walker spacetime in the context of $f(Q)$ cosmology. When the coincident gauge is considered, the resulting minisuperspace system possesses second class constraints. This distinguishe... |
2005.05350 | Ivan Booth | Ivan Booth, Robie Hennigar, Saikat Mondal | MOTS in Schwarzschild: multiple self-intersections and extreme mass
ratio mergers | 20 pages, 20 figures. V2: Two paragraphs added to emphasize that
results for PG slicings are expected to be more generic than those for a
static slicing. Otherwise small changes in wording. Version submitted to
journal, V3: Title and abstract changed to emphasize main results. Typos
corrected in text. Published... | Phys. Rev. D 102, 044031 (2020) | 10.1103/PhysRevD.102.044031 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the open and closed axisymmetric marginally outer trapped surfaces
contained in leaves of constant Painlev\'e-Gullstrand time for Schwarzschild
spacetimes. We identify a family of closed MOTS in the black hole interior
characterized by an arbitrary number of self-intersections. This suggests that
the self-in... | [
{
"created": "Mon, 11 May 2020 18:01:21 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Jun 2020 14:29:30 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Sep 2020 12:09:47 GMT",
"version": "v3"
}
] | 2020-09-11 | [
[
"Booth",
"Ivan",
""
],
[
"Hennigar",
"Robie",
""
],
[
"Mondal",
"Saikat",
""
]
] | We study the open and closed axisymmetric marginally outer trapped surfaces contained in leaves of constant Painlev\'e-Gullstrand time for Schwarzschild spacetimes. We identify a family of closed MOTS in the black hole interior characterized by an arbitrary number of self-intersections. This suggests that the self-inte... |
gr-qc/9903091 | Martin Rainer | M. Rainer | On the fundamental length of quantum geometry and the black hole entropy | 4 pages compact revtex format, few sentences straightened | Grav.Cosmol. 6 (2000) 181-184 | null | CGPG-99/3-5 | gr-qc | null | The geometric operators of area, volume, and length, depend on a fundamental
length l of quantum geometry which is a priori arbitrary rather than equal to
the Planck length l_P. The fundamental length l and the Immirzi parameter
$\gamma$ determine each other. With any l the entropy formula is rendered most
naturally ... | [
{
"created": "Wed, 24 Mar 1999 23:16:14 GMT",
"version": "v1"
},
{
"created": "Thu, 13 May 1999 21:31:16 GMT",
"version": "v2"
},
{
"created": "Mon, 17 May 1999 00:31:39 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Rainer",
"M.",
""
]
] | The geometric operators of area, volume, and length, depend on a fundamental length l of quantum geometry which is a priori arbitrary rather than equal to the Planck length l_P. The fundamental length l and the Immirzi parameter $\gamma$ determine each other. With any l the entropy formula is rendered most naturally in... |
0712.1881 | Yasunori Fujii | Yasunori Fujii | Conformal transformation in the scalar-tensor theory applied to the
accelerating universe | 36 pages with 1 figure | Prog.Theor.Phys.118:983-1018,2007 | 10.1143/PTP.118.983 | null | gr-qc | null | The scalar-tensor theory is plagued by nagging questions if different
conformal frames, in particular the Jordan and Einstein conformal frames, are
equivalent to each other. As a closely related question, there are opposing
views on which of the two conformal frames is physically acceptable.
Reinforcing our previous ... | [
{
"created": "Wed, 12 Dec 2007 08:28:46 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Fujii",
"Yasunori",
""
]
] | The scalar-tensor theory is plagued by nagging questions if different conformal frames, in particular the Jordan and Einstein conformal frames, are equivalent to each other. As a closely related question, there are opposing views on which of the two conformal frames is physically acceptable. Reinforcing our previous cl... |
0808.0880 | Sanjeev S. Seahra | Viqar Husain and Sanjeev S. Seahra | Ricci flows, wormholes and critical phenomena | 8 pages, 5 figures. References added and minor changes to match
version accepted by CQG as a fast track communication | Class.Quant.Grav.25:222002,2008 | 10.1088/0264-9381/25/22/222002 | null | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the evolution of wormhole geometries under Ricci flow using
numerical methods. Depending on values of initial data parameters, wormhole
throats either pinch off or evolve to a monotonically growing state. The
transition between these two behaviors exhibits a from of critical phenomena
reminiscent of that obs... | [
{
"created": "Wed, 6 Aug 2008 16:45:47 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Sep 2008 16:50:34 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Husain",
"Viqar",
""
],
[
"Seahra",
"Sanjeev S.",
""
]
] | We study the evolution of wormhole geometries under Ricci flow using numerical methods. Depending on values of initial data parameters, wormhole throats either pinch off or evolve to a monotonically growing state. The transition between these two behaviors exhibits a from of critical phenomena reminiscent of that obser... |
1301.0879 | Astrid Eichhorn | Astrid Eichhorn | On unimodular quantum gravity | 10 pages, 1 figure, version accepted by CQG | null | 10.1088/0264-9381/30/11/115016 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Unimodular gravity is classically equivalent to standard Einstein gravity,
but differs when it comes to the quantum theory: The conformal factor is
non-dynamical, and the gauge symmetry consists of transverse diffeomorphisms
only. Furthermore, the cosmological constant is not renormalized. Thus the
quantum theory is ... | [
{
"created": "Sat, 5 Jan 2013 07:52:01 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Apr 2013 22:46:49 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Eichhorn",
"Astrid",
""
]
] | Unimodular gravity is classically equivalent to standard Einstein gravity, but differs when it comes to the quantum theory: The conformal factor is non-dynamical, and the gauge symmetry consists of transverse diffeomorphisms only. Furthermore, the cosmological constant is not renormalized. Thus the quantum theory is di... |
gr-qc/0405023 | Innocenzo M. Pinto | R.P. Croce, Th. Demma, M. Longo, S. Marano, V. Matta, V. Pierro, I.M.
Pinto | Correlator Bank Detection of GW chirps. False-Alarm Probability,
Template Density and Thresholds: Behind and Beyond the Minimal-Match Issue | submitted to Phys. Rev. D | Phys.Rev. D70 (2004) 122001 | 10.1103/PhysRevD.70.122001 | null | gr-qc | null | The general problem of computing the false-alarm rate vs. detection-threshold
relationship for a bank of correlators is addressed, in the context of
maximum-likelihood detection of gravitational waves, with specific reference to
chirps from coalescing binary systems. Accurate (lower-bound) approximants for
the cumula... | [
{
"created": "Wed, 5 May 2004 18:45:11 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Croce",
"R. P.",
""
],
[
"Demma",
"Th.",
""
],
[
"Longo",
"M.",
""
],
[
"Marano",
"S.",
""
],
[
"Matta",
"V.",
""
],
[
"Pierro",
"V.",
""
],
[
"Pinto",
"I. M.",
""
]
] | The general problem of computing the false-alarm rate vs. detection-threshold relationship for a bank of correlators is addressed, in the context of maximum-likelihood detection of gravitational waves, with specific reference to chirps from coalescing binary systems. Accurate (lower-bound) approximants for the cumulati... |
2211.16737 | Tiziano Schiavone | Tiziano Schiavone, Giovanni Montani, Flavio Bombacigno | $f(R)$ gravity in the Jordan Frame as a Paradigm for the Hubble Tension | 6 pages, 3 figures, accepted for publication in MNRAS Letters
(manuscript version after the proof corrections) | Monthly Notices of the Royal Astronomical Society Letters, 522,
2023, L72 | 10.1093/mnrasl/slad041 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | We analyse the $f(R)$ gravity in the so-called Jordan frame, as implemented
to the isotropic Universe dynamics. The goal of the present study is to show
that, according to recent data analyses of the supernovae Ia Pantheon sample,
it is possible to account for an effective redshift dependence of the Hubble
constant. ... | [
{
"created": "Wed, 30 Nov 2022 04:49:53 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Mar 2023 16:50:34 GMT",
"version": "v2"
},
{
"created": "Tue, 28 Mar 2023 13:59:54 GMT",
"version": "v3"
},
{
"created": "Tue, 11 Apr 2023 10:15:23 GMT",
"version": "v4"
}
] | 2023-04-12 | [
[
"Schiavone",
"Tiziano",
""
],
[
"Montani",
"Giovanni",
""
],
[
"Bombacigno",
"Flavio",
""
]
] | We analyse the $f(R)$ gravity in the so-called Jordan frame, as implemented to the isotropic Universe dynamics. The goal of the present study is to show that, according to recent data analyses of the supernovae Ia Pantheon sample, it is possible to account for an effective redshift dependence of the Hubble constant. Th... |
1606.03419 | Huan Yang | Huan Yang, Atsushi Nishizawa, Ue-Li Pen | Testing Gravity with Pulsar Scintillation Measurements | 6 pages, 3 figures, published version | Phys. Rev. D 95, 084049 (2017) | 10.1103/PhysRevD.95.084049 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose to use pulsar scintillation measurements to test predictions of
alternative theories of gravity. Comparing to single-path pulsar timing
measurements, the scintillation measurements can achieve a factor of 10^5
improvement in timing accuracy, due to the effect of multi-path interference.
Previous scintillat... | [
{
"created": "Fri, 10 Jun 2016 18:34:08 GMT",
"version": "v1"
},
{
"created": "Tue, 2 May 2017 04:08:20 GMT",
"version": "v2"
}
] | 2017-05-03 | [
[
"Yang",
"Huan",
""
],
[
"Nishizawa",
"Atsushi",
""
],
[
"Pen",
"Ue-Li",
""
]
] | We propose to use pulsar scintillation measurements to test predictions of alternative theories of gravity. Comparing to single-path pulsar timing measurements, the scintillation measurements can achieve a factor of 10^5 improvement in timing accuracy, due to the effect of multi-path interference. Previous scintillatio... |
2404.18651 | Clemens S\"amann | Clemens S\"amann | A brief introduction to non-regular spacetime geometry | 19 pages, 3 Figures; invited article for International Mathematical
News, the journal of the Austrian Mathematical Society | null | null | null | gr-qc math-ph math.DG math.MG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a brief non-technical introduction to non-regular spacetime geometry.
In particular, we discuss how curvature, and hence gravity, can be defined
without a smooth (differential geometric) calculus.
| [
{
"created": "Mon, 29 Apr 2024 12:32:35 GMT",
"version": "v1"
}
] | 2024-04-30 | [
[
"Sämann",
"Clemens",
""
]
] | We give a brief non-technical introduction to non-regular spacetime geometry. In particular, we discuss how curvature, and hence gravity, can be defined without a smooth (differential geometric) calculus. |
gr-qc/9411067 | Donald Marolf | Donald Marolf | Diffeomorphism Invariant Actions for Partial Systems | 5 pages (10 preprint pages) ReVTeX | Phys.Lett. B349 (1995) 89-93 | 10.1016/0370-2693(95)00195-Q | UCSBTH-94-45 | gr-qc hep-th | null | Local action principles on a manifold $\M$ are invariant (if at all) only
under diffeomorphisms that preserve the boundary of $\M$. Suppose, however,
that we wish to study only part of a system described by such a principle;
namely, the part that lies in a bounded region $R$ of spacetime where $R$ is
specified in som... | [
{
"created": "Mon, 28 Nov 1994 18:00:44 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Marolf",
"Donald",
""
]
] | Local action principles on a manifold $\M$ are invariant (if at all) only under diffeomorphisms that preserve the boundary of $\M$. Suppose, however, that we wish to study only part of a system described by such a principle; namely, the part that lies in a bounded region $R$ of spacetime where $R$ is specified in some ... |
2006.02298 | Gaurav Narain | Gaurav Narain and Hai-Qing Zhang | Lorentzian quantum cosmology in novel Gauss-Bonnet gravity from
Picard-Lefschetz methods | 1+24 pages, 1 figure | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study some aspects of classical and quantum cosmology in the
novel-Gauss-Bonnet (nGB) gravity in four space-time dimensions. Starting with a
generalised Friedmann-Lema\^itre-Robertson Walker (FLRW) metric respecting
homogeneity and isotropicity in arbitrary space-time dimension $D$, we find the
actio... | [
{
"created": "Wed, 3 Jun 2020 14:30:27 GMT",
"version": "v1"
}
] | 2020-06-04 | [
[
"Narain",
"Gaurav",
""
],
[
"Zhang",
"Hai-Qing",
""
]
] | In this paper we study some aspects of classical and quantum cosmology in the novel-Gauss-Bonnet (nGB) gravity in four space-time dimensions. Starting with a generalised Friedmann-Lema\^itre-Robertson Walker (FLRW) metric respecting homogeneity and isotropicity in arbitrary space-time dimension $D$, we find the action ... |
0904.2154 | Alexander Zhidenko | Hideo Kodama, R. A. Konoplya, Alexander Zhidenko | Gravitational stability of simply rotating Myers-Perry black holes:
tensorial perturbations | 9 pages, 10 figures, RevTeX | Phys.Rev.D81:044007,2010 | 10.1103/PhysRevD.81.044007 | KEK-Cosmo-26 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the stability of $D \geq 7$ asymptotically flat black holes rotating
in a single two-plane against tensor-type gravitational perturbations. The
extensive search of quasinormal modes for these black holes did not indicate
any presence of growing modes, implying the stability of simply rotating
Myers-Perry bla... | [
{
"created": "Tue, 14 Apr 2009 16:30:00 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Dec 2009 10:14:16 GMT",
"version": "v2"
},
{
"created": "Sat, 30 Jan 2010 20:18:13 GMT",
"version": "v3"
}
] | 2010-04-06 | [
[
"Kodama",
"Hideo",
""
],
[
"Konoplya",
"R. A.",
""
],
[
"Zhidenko",
"Alexander",
""
]
] | We study the stability of $D \geq 7$ asymptotically flat black holes rotating in a single two-plane against tensor-type gravitational perturbations. The extensive search of quasinormal modes for these black holes did not indicate any presence of growing modes, implying the stability of simply rotating Myers-Perry black... |
gr-qc/0611116 | C\'assius de Melo | R. R. Cuzinatto, C. A. M. de Melo, L. G. Medeiros and P. J. Pompeia | Gauge Formulation for Higher Order Gravity | Published version | Eur.Phys.J.C53:99-108,2008 | 10.1140/epjc/s10052-007-0441-1 | IFT-P.037/2006 | gr-qc astro-ph hep-th math-ph math.MP | null | This work is an application of the second order gauge theory for the Lorentz
group, where a description of the gravitational interaction is obtained which
includes derivatives of the curvature. We analyze the form of the second field
strenght, $G=\partial F +fAF$, in terms of geometrical variables. All possible
indep... | [
{
"created": "Wed, 22 Nov 2006 18:02:23 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Jul 2007 19:12:30 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Dec 2007 20:03:33 GMT",
"version": "v3"
}
] | 2015-02-24 | [
[
"Cuzinatto",
"R. R.",
""
],
[
"de Melo",
"C. A. M.",
""
],
[
"Medeiros",
"L. G.",
""
],
[
"Pompeia",
"P. J.",
""
]
] | This work is an application of the second order gauge theory for the Lorentz group, where a description of the gravitational interaction is obtained which includes derivatives of the curvature. We analyze the form of the second field strenght, $G=\partial F +fAF$, in terms of geometrical variables. All possible indepen... |
gr-qc/9506013 | null | Giampiero Esposito | New Perspectives in Complex General Relativity | 7 pages, Latex, no figures, to appear in Proceedings of the Maynooth
Meeting on Topics in the Theories of Fundamental Interactions, Maynooth,
24-26 May 1995, World Scientific Publishing Company. Workshop's chairperson:
Tigran Tchrakian | null | null | DSF preprint 95/14 | gr-qc | null | In complex general relativity, Lorentzian space-time is replaced by a
four-complex-dimensional complex-Riemannian manifold, with holomorphic
connection and holomorphic curvature tensor. A multisymplectic analysis shows
that the Hamiltonian constraint is replaced by a geometric structure linear in
the holomorphic mult... | [
{
"created": "Wed, 7 Jun 1995 14:45:41 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Esposito",
"Giampiero",
""
]
] | In complex general relativity, Lorentzian space-time is replaced by a four-complex-dimensional complex-Riemannian manifold, with holomorphic connection and holomorphic curvature tensor. A multisymplectic analysis shows that the Hamiltonian constraint is replaced by a geometric structure linear in the holomorphic multim... |
1110.5249 | Erik Gerwick | Tirthabir Biswas, Erik Gerwick, Tomi Koivisto, Anupam Mazumdar | Towards singularity and ghost free theories of gravity | 4 pages; redundancies in action eliminated; references added and a
few minor typos corrected | Phys. Rev. Lett. 108.031101, 2012 | 10.1103/PhysRevLett.108.031101 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the most general covariant ghost-free gravitational action in a
Minkowski vacuum. Apart from the much studied f(R) models, this includes a
large class of non-local actions with improved UV behavior, which nevertheless
recover Einstein's general relativity in the IR.
| [
{
"created": "Mon, 24 Oct 2011 14:53:17 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Nov 2011 09:39:25 GMT",
"version": "v2"
}
] | 2013-05-30 | [
[
"Biswas",
"Tirthabir",
""
],
[
"Gerwick",
"Erik",
""
],
[
"Koivisto",
"Tomi",
""
],
[
"Mazumdar",
"Anupam",
""
]
] | We present the most general covariant ghost-free gravitational action in a Minkowski vacuum. Apart from the much studied f(R) models, this includes a large class of non-local actions with improved UV behavior, which nevertheless recover Einstein's general relativity in the IR. |
0808.0831 | Marco Valerio Battisti | Marco Valerio Battisti, Giovanni Montani | The Mixmaster Universe in a generalized uncertainty principle framework | 7 pages, minor changes | Phys.Lett.B681:179-184,2009 | 10.1016/j.physletb.2009.10.003 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/3.0/ | The Bianchi IX cosmological model is analyzed in a generalized uncertainty
principle framework. The Arnowitt-Deser-Misner reduction of the dynamics is
performed and a time-coordinate, namely the volume of the Universe, naturally
arises. Such a variable is treated in the ordinary way while the anisotropies
(the physic... | [
{
"created": "Wed, 6 Aug 2008 13:26:00 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Oct 2009 09:15:45 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Battisti",
"Marco Valerio",
""
],
[
"Montani",
"Giovanni",
""
]
] | The Bianchi IX cosmological model is analyzed in a generalized uncertainty principle framework. The Arnowitt-Deser-Misner reduction of the dynamics is performed and a time-coordinate, namely the volume of the Universe, naturally arises. Such a variable is treated in the ordinary way while the anisotropies (the physical... |
1802.07536 | Knut Bakke | R. L. L. Vit\'oria and K. Bakke | Rotating effects on the scalar field in the cosmic string spacetime, in
the spacetime with space-like dislocation and in the spacetime with a spiral
dislocation | 12 pages, no figure. To be published in The European Physical Journal
C | Eur. Phys. J. C (2018) 78:175 | 10.1140/epjc/s10052-018-5658-7 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the interface between general relativity and relativistic quantum
mechanics, we analyse rotating effects on the scalar field subject to a
hard-wall confining potential. We consider three different scenarios of general
relativity given by the cosmic string spacetime, the spacetime with space-like
dislocation and th... | [
{
"created": "Wed, 21 Feb 2018 12:15:11 GMT",
"version": "v1"
}
] | 2018-03-06 | [
[
"Vitória",
"R. L. L.",
""
],
[
"Bakke",
"K.",
""
]
] | In the interface between general relativity and relativistic quantum mechanics, we analyse rotating effects on the scalar field subject to a hard-wall confining potential. We consider three different scenarios of general relativity given by the cosmic string spacetime, the spacetime with space-like dislocation and the ... |
gr-qc/0101112 | A. Miyazaki | A. Miyazaki | Uniqueness of the Machian Solution in the Brans-Dicke Theory | 14 pages, LaTeX2e. Submitted to Physical Review D | null | null | null | gr-qc | null | Machian solutions of which the scalar field exhibits the asymptotic behavior
$\phi =O(\rho /\omega)$ are generally explored for the homogeneous and
isotropic universe in the Brans-Dicke theory. It is shown that the Machian
solution is unique for the closed and the open space. Such a solution is
restricted to one that... | [
{
"created": "Mon, 29 Jan 2001 16:10:44 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Miyazaki",
"A.",
""
]
] | Machian solutions of which the scalar field exhibits the asymptotic behavior $\phi =O(\rho /\omega)$ are generally explored for the homogeneous and isotropic universe in the Brans-Dicke theory. It is shown that the Machian solution is unique for the closed and the open space. Such a solution is restricted to one that s... |
1007.3678 | Oleg Zaslavskii | Oleg B. Zaslavskii | Acceleration of particles as universal property of rotating black holes | 9 pages. Discussion expanded | Phys.Rev.D82:083004,2010 | 10.1103/PhysRevD.82.083004 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We argue that the possibility of having infinite energy in the centre of mass
frame of colliding particles is a generic property of rotating black holes. We
suggest a general model-independent derivation valid for "dirty" black holes.
The earlier observations for the Kerr or Kerr-Newman metrics are confirmed and
gene... | [
{
"created": "Wed, 21 Jul 2010 15:11:21 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Oct 2010 16:54:35 GMT",
"version": "v2"
}
] | 2014-11-21 | [
[
"Zaslavskii",
"Oleg B.",
""
]
] | We argue that the possibility of having infinite energy in the centre of mass frame of colliding particles is a generic property of rotating black holes. We suggest a general model-independent derivation valid for "dirty" black holes. The earlier observations for the Kerr or Kerr-Newman metrics are confirmed and genera... |
2105.09167 | Francisco Fernández-Ãlvarez | Francisco Fern\'andez-\'Alvarez and Jos\'e M. M. Senovilla | Asymptotic Structure with a positive cosmological constant | 150 pages, 10 figures, second of two papers, full-length abstract
available in the paper, minor corrections, some references added, new table
added, accepted version for publication | Class. Quant. Grav. 39 165012 2022 | 10.1088/1361-6382/ac395b | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is the second of two papers that study the asymptotic structure of
space-times with a non-negative cosmological constant $\Lambda$. This paper
deals with the case $\Lambda >0$. Our approach is founded on the `tidal
energies' built with the Weyl curvature and, specifically, we use the
asymptotic super-Poynting ve... | [
{
"created": "Wed, 19 May 2021 14:36:20 GMT",
"version": "v1"
},
{
"created": "Thu, 20 May 2021 15:51:19 GMT",
"version": "v2"
},
{
"created": "Mon, 21 Jun 2021 14:31:21 GMT",
"version": "v3"
},
{
"created": "Tue, 23 Nov 2021 19:39:18 GMT",
"version": "v4"
}
] | 2022-08-23 | [
[
"Fernández-Álvarez",
"Francisco",
""
],
[
"Senovilla",
"José M. M.",
""
]
] | This is the second of two papers that study the asymptotic structure of space-times with a non-negative cosmological constant $\Lambda$. This paper deals with the case $\Lambda >0$. Our approach is founded on the `tidal energies' built with the Weyl curvature and, specifically, we use the asymptotic super-Poynting vect... |
2405.13072 | Samuel Kov\'a\v{c}ik | Samuel Kov\'a\v{c}ik | Expanding Microscopic Black Holes | Accepted to International Journal of Modern Physics D | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by/4.0/ | Two interesting hypotheses about black holes have been proposed. The older
one states that microscopic black holes can be accountable for the observed
dark matter density. The newer one states that black holes are coupled to the
expansion of the universe. Here, we combine those ideas and investigate the
behaviour of ... | [
{
"created": "Mon, 20 May 2024 21:49:25 GMT",
"version": "v1"
}
] | 2024-05-24 | [
[
"Kováčik",
"Samuel",
""
]
] | Two interesting hypotheses about black holes have been proposed. The older one states that microscopic black holes can be accountable for the observed dark matter density. The newer one states that black holes are coupled to the expansion of the universe. Here, we combine those ideas and investigate the behaviour of ex... |
1604.02272 | Ekaterina Pozdeeva | E.O. Pozdeeva and S.Yu. Vernov | Renormalization-group improved inflationary scenarios | null | Phys. Part. Nuclei Lett. 14 (2017) 386 | 10.1134/S1547477117020273 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The possibility to construct an inflationary scenario for
renormalization-group improved potentials corresponding to the Higgs sector of
quantum field models is investigated. Taking into account quantum corrections
to the renormalization-group potential which sums all leading logs of
perturbation theory is essential ... | [
{
"created": "Fri, 8 Apr 2016 08:30:30 GMT",
"version": "v1"
}
] | 2017-03-22 | [
[
"Pozdeeva",
"E. O.",
""
],
[
"Vernov",
"S. Yu.",
""
]
] | The possibility to construct an inflationary scenario for renormalization-group improved potentials corresponding to the Higgs sector of quantum field models is investigated. Taking into account quantum corrections to the renormalization-group potential which sums all leading logs of perturbation theory is essential fo... |
1312.7074 | Shinya Tomizawa | Shinya Tomizawa, Takashi Mishima | New cylindrical gravitational soliton waves and gravitational Faraday
rotation | 8 pages, 2 figures | Phys. Rev. D 90, 044036 (2014) | 10.1103/PhysRevD.90.044036 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In terms of gravitational solitons, we study gravitational non-linear effects
of gravitational solitary waves such as Faraday rotation. Applying the
Pomeransky's procedure for inverse scattering method, which has been recently
used for constructing stationary black hole solutions in five dimensions to a
cylindrical s... | [
{
"created": "Thu, 26 Dec 2013 09:13:26 GMT",
"version": "v1"
}
] | 2014-08-20 | [
[
"Tomizawa",
"Shinya",
""
],
[
"Mishima",
"Takashi",
""
]
] | In terms of gravitational solitons, we study gravitational non-linear effects of gravitational solitary waves such as Faraday rotation. Applying the Pomeransky's procedure for inverse scattering method, which has been recently used for constructing stationary black hole solutions in five dimensions to a cylindrical spa... |
gr-qc/0304108 | Gabriela Gonzalez | Gabriela Gonzalez | Limiting noises in gravitational wave detectors: guidance from their
statistical properties | 7 Pages, Latex,figures included | null | 10.1117/12.497024 | LSU-REL-042903 | gr-qc | null | It is expected that interferometric gravitational wave detectors such as LIGO
\cite{Barish99} will be eventually limited by fundamental noise sources like
shot noise and Brownian motion, as well as by seismic noise. In the
commissioning process, other technical noise sources (electronics noise,
alignment fluctuations... | [
{
"created": "Tue, 29 Apr 2003 23:18:41 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Gonzalez",
"Gabriela",
""
]
] | It is expected that interferometric gravitational wave detectors such as LIGO \cite{Barish99} will be eventually limited by fundamental noise sources like shot noise and Brownian motion, as well as by seismic noise. In the commissioning process, other technical noise sources (electronics noise, alignment fluctuations) ... |
1710.01120 | Shi Pi | Dan Li, Shi Pi, and Robert J. Scherrer | Oscillating scalar fields in extended quintessence | 14 pages | Phys. Rev. D 97, 023530 (2018) | 10.1103/PhysRevD.97.023530 | YITP-17-103 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a rapidly-oscillating scalar field with potential $V(\phi) =
k|\phi|^n$ nonminally coupled to the Ricci scalar $R$ via a term of the form
$(1- 8 \pi G_0 \xi \phi^2) R$ in the action. In the weak coupling limit, we
calculate the effect of the nonminimal coupling on the time-averaged equation
of state paramete... | [
{
"created": "Tue, 3 Oct 2017 13:01:44 GMT",
"version": "v1"
}
] | 2018-01-31 | [
[
"Li",
"Dan",
""
],
[
"Pi",
"Shi",
""
],
[
"Scherrer",
"Robert J.",
""
]
] | We study a rapidly-oscillating scalar field with potential $V(\phi) = k|\phi|^n$ nonminally coupled to the Ricci scalar $R$ via a term of the form $(1- 8 \pi G_0 \xi \phi^2) R$ in the action. In the weak coupling limit, we calculate the effect of the nonminimal coupling on the time-averaged equation of state parameter ... |
gr-qc/0304051 | Parampreet Singh | Gaetano Lambiase, Parampreet Singh | Matter-Antimatter Asymmetry Generated by Loop Quantum Gravity | To appear in Phys. Lett. B. Minor changes in presentation. References
added | Phys.Lett. B565 (2003) 27-32 | 10.1016/S0370-2693(03)00761-5 | null | gr-qc astro-ph hep-ph hep-th | null | We show that Loop Quantum Gravity provides new mechanisms through which
observed matter-antimatter asymmetry in the Universe can naturally arise at
temperatures less than GUT scale. This is enabled through the introduction of a
new length scale ${\cal L}$, much greater than Planck length ($l_P$), to obtain
semi-class... | [
{
"created": "Mon, 14 Apr 2003 11:00:58 GMT",
"version": "v1"
},
{
"created": "Mon, 19 May 2003 13:50:59 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Lambiase",
"Gaetano",
""
],
[
"Singh",
"Parampreet",
""
]
] | We show that Loop Quantum Gravity provides new mechanisms through which observed matter-antimatter asymmetry in the Universe can naturally arise at temperatures less than GUT scale. This is enabled through the introduction of a new length scale ${\cal L}$, much greater than Planck length ($l_P$), to obtain semi-classic... |
gr-qc/0312083 | Hernando Quevedo | A. Sanchez, A. Macias and H. Quevedo | Generating Gowdy cosmological models | Latex, 15 pages, no figures | J.Math.Phys. 45 (2004) 1849-1858 | 10.1063/1.1695448 | null | gr-qc | null | Using the analogy with stationary axisymmetric solutions, we present a method
to generate new analytic cosmological solutions of Einstein's equation
belonging to the class of $T^3$ Gowdy cosmological models. We show that the
solutions can be generated from their data at the initial singularity and
present the formal ... | [
{
"created": "Thu, 18 Dec 2003 01:45:17 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Sanchez",
"A.",
""
],
[
"Macias",
"A.",
""
],
[
"Quevedo",
"H.",
""
]
] | Using the analogy with stationary axisymmetric solutions, we present a method to generate new analytic cosmological solutions of Einstein's equation belonging to the class of $T^3$ Gowdy cosmological models. We show that the solutions can be generated from their data at the initial singularity and present the formal ge... |
1902.00130 | Chad Middleton | Chad Middleton, Bret A. Brouse Jr., Scott D. Jackson | Anisotropic evolution of D-dimensional FRW spacetime | Title changed from "A possible higher-dimensional alternative to
scalar-field inflationary theory". Several new results have been added
including a predicted lower- and upper-bound on the time scales marking the
end of an early-time inflationary epoch and the beginning of an FRW epoch for
d=1 | Eur. Phys. J. C (2019) 79: 982 | 10.1140/epjc/s10052-019-7492-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the time evolution of the D=d+4 dimensional Einstein field
equations subjected to a flat Robertson-Walker metric where the 3D and
higher-dimensional scale factors are allowed to evolve at different rates. We
find the exact solution to these equations for a single fluid component, which
yields two limiting ... | [
{
"created": "Thu, 31 Jan 2019 23:40:32 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Dec 2019 21:29:45 GMT",
"version": "v2"
}
] | 2019-12-03 | [
[
"Middleton",
"Chad",
""
],
[
"Brouse",
"Bret A.",
"Jr."
],
[
"Jackson",
"Scott D.",
""
]
] | We examine the time evolution of the D=d+4 dimensional Einstein field equations subjected to a flat Robertson-Walker metric where the 3D and higher-dimensional scale factors are allowed to evolve at different rates. We find the exact solution to these equations for a single fluid component, which yields two limiting re... |
gr-qc/0009078 | Archana Pai | Archana Pai, Sanjeev Dhurandhar and Sukanta Bose | A data-analysis strategy for detecting gravitational-wave signals from
inspiraling compact binaries with a network of laser-interferometric
detectors | 40 pages, 2 figures, uses RevTex and psfig, submitted to Phys. Rev.
D, A few minor changes added | Phys.Rev.D64:042004,2001 | 10.1103/PhysRevD.64.042004 | IUCAA - 33/2000, AEI-2000-055 | gr-qc astro-ph | null | A data-analysis strategy based on the maximum-likelihood method (MLM) is
presented for the detection of gravitational waves from inspiraling compact
binaries with a network of laser-interferometric detectors having arbitrary
orientations and arbitrary locations around the globe. The MLM is based on the
network likeli... | [
{
"created": "Fri, 22 Sep 2000 09:14:40 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Oct 2000 07:35:23 GMT",
"version": "v2"
}
] | 2009-12-31 | [
[
"Pai",
"Archana",
""
],
[
"Dhurandhar",
"Sanjeev",
""
],
[
"Bose",
"Sukanta",
""
]
] | A data-analysis strategy based on the maximum-likelihood method (MLM) is presented for the detection of gravitational waves from inspiraling compact binaries with a network of laser-interferometric detectors having arbitrary orientations and arbitrary locations around the globe. The MLM is based on the network likeliho... |
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