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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/9606076 | Thibault Damour | Thibault Damour and David Vokrouhlicky | Testing for gravitationally preferred directions using the lunar orbit | 20 pages, Revtex, submitted to Phys Rev D | Phys.Rev.D53:6740-6740,1996 | 10.1103/PhysRevD.53.6740 | IHES/P/95/99 | gr-qc | null | As gravity is a long-range force, it is {\it a priori} conceivable that the
Universe's global matter distribution select a preferred rest frame for local
gravitational physics. At the post-Newtonian approximation, the phenomenology
of preferred-frame effects is described by two parameters, $\alpha_1$ and
$\alpha_2$, ... | [
{
"created": "Thu, 27 Jun 1996 16:50:16 GMT",
"version": "v1"
}
] | 2011-09-09 | [
[
"Damour",
"Thibault",
""
],
[
"Vokrouhlicky",
"David",
""
]
] | As gravity is a long-range force, it is {\it a priori} conceivable that the Universe's global matter distribution select a preferred rest frame for local gravitational physics. At the post-Newtonian approximation, the phenomenology of preferred-frame effects is described by two parameters, $\alpha_1$ and $\alpha_2$, th... |
0704.3595 | Eyo Ita III | Eyo Eyo Ita III | 4-Dimensional General Relativity from the instrinsic spatial geometry of
SO(3) Yang--Mills theory | 16 pages. Background material for revised journal article | Nucl. Phys. B, Vol. 852 (2011) pp.681-695 | 10.1016/j.nuclphysb.2011.07.004 | DAMTP-2007-38 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we derive 4-dimensional General Relativity from three
dimensions, using the intrinsic spatial geometry inherent in Yang--Mills theory
which has been exposed by previous authors as well as as some properties of the
Ashtekar variables. We provide various interesting relations, including the
fact that Gene... | [
{
"created": "Thu, 26 Apr 2007 17:48:59 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Apr 2007 05:07:12 GMT",
"version": "v2"
},
{
"created": "Wed, 15 Dec 2010 20:53:57 GMT",
"version": "v3"
},
{
"created": "Fri, 18 Mar 2011 06:45:03 GMT",
"version": "v4"
},
{
"c... | 2012-02-20 | [
[
"Ita",
"Eyo Eyo",
"III"
]
] | In this paper we derive 4-dimensional General Relativity from three dimensions, using the intrinsic spatial geometry inherent in Yang--Mills theory which has been exposed by previous authors as well as as some properties of the Ashtekar variables. We provide various interesting relations, including the fact that Genera... |
2206.14333 | Israel Quiros | Roberto De Arcia, Israel Quiros, Ulises Nucamendi, Tame Gonzalez,
Francisco Antonio Horta-Rangel, Philippe Eenens | Global asymptotic dynamics of the cubic galileon interacting with dark
matter | 22 pages, 6 figures. Version that matches the one published | Phys. Dark Univ. 40 (2023) 101183 | 10.1016/j.dark.2023.101183 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we perform a thorough dynamical systems analysis of the cubic
galileon model non-minimally coupled to the dark matter. Three well-known
classes of interacting models are considered where the energy exchange between
the dark components is a function of the dark matter density and of the dark
energy densi... | [
{
"created": "Wed, 29 Jun 2022 00:06:34 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Mar 2023 16:37:17 GMT",
"version": "v2"
}
] | 2023-03-08 | [
[
"De Arcia",
"Roberto",
""
],
[
"Quiros",
"Israel",
""
],
[
"Nucamendi",
"Ulises",
""
],
[
"Gonzalez",
"Tame",
""
],
[
"Horta-Rangel",
"Francisco Antonio",
""
],
[
"Eenens",
"Philippe",
""
]
] | In this paper we perform a thorough dynamical systems analysis of the cubic galileon model non-minimally coupled to the dark matter. Three well-known classes of interacting models are considered where the energy exchange between the dark components is a function of the dark matter density and of the dark energy density... |
1404.1018 | Gianluca Calcagni | Aurelien Barrau, Martin Bojowald, Gianluca Calcagni, Julien Grain,
Mikhail Kagan | Anomaly-free cosmological perturbations in effective canonical quantum
gravity | 1+52 pages. v2: discussions extended and improved throughout the
text, references added, typos corrected, conclusions unchanged | JCAP05(2015)051 | 10.1088/1475-7516/2015/05/051 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article lays out a complete framework for an effective theory of
cosmological perturbations with corrections from canonical quantum gravity.
Since several examples exist for quantum-gravity effects that change the
structure of space-time, the classical perturbative treatment must be rethought
carefully. The pres... | [
{
"created": "Thu, 3 Apr 2014 17:14:46 GMT",
"version": "v1"
},
{
"created": "Tue, 26 May 2015 19:42:27 GMT",
"version": "v2"
}
] | 2015-05-27 | [
[
"Barrau",
"Aurelien",
""
],
[
"Bojowald",
"Martin",
""
],
[
"Calcagni",
"Gianluca",
""
],
[
"Grain",
"Julien",
""
],
[
"Kagan",
"Mikhail",
""
]
] | This article lays out a complete framework for an effective theory of cosmological perturbations with corrections from canonical quantum gravity. Since several examples exist for quantum-gravity effects that change the structure of space-time, the classical perturbative treatment must be rethought carefully. The presen... |
gr-qc/0108019 | null | S. Q. Wu and X. Cai | Non-existence of New Quantum Ergosphere Effect of a Vaidya-type Black
Hole | Latex, 9 pages, no figure, submitted to Mod. Phys. Lett. A | Mod.Phys.Lett. A16 (2001) 1549-1558 | 10.1142/S0217732301004789 | null | gr-qc | null | Hawking evaporation of Dirac particles and scalar fields in a Vaidya-type
black hole is investigated by the method of generalized tortoise coordinate
transformation. It is shown that Hawking radiation of Dirac particles does not
exist for $P_1, Q_2$ components but for $P_2, Q_1$ components in any
Vaidya-type black ho... | [
{
"created": "Tue, 7 Aug 2001 01:48:05 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Wu",
"S. Q.",
""
],
[
"Cai",
"X.",
""
]
] | Hawking evaporation of Dirac particles and scalar fields in a Vaidya-type black hole is investigated by the method of generalized tortoise coordinate transformation. It is shown that Hawking radiation of Dirac particles does not exist for $P_1, Q_2$ components but for $P_2, Q_1$ components in any Vaidya-type black hole... |
2204.02377 | D. Divyajyoti | Abhishek Chattaraj and Tamal RoyChowdhury and Divyajyoti and Chandra
Kant Mishra and Anshu Gupta | High accuracy post-Newtonian and numerical relativity comparisons
involving higher modes for eccentric binary black holes and a dominant mode
eccentric inspiral-merger-ringdown model | null | Phys. Rev. D 106, 124008 - Published 2 December 2022 | 10.1103/PhysRevD.106.124008 | LIGO-P2200106 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Spherical harmonic modes of gravitational waveforms for inspiraling compact
binaries in eccentric orbits from post-Newtonian (PN) theory accurate to third
post-Newtonian order, and those extracted from numerical relativity (NR)
simulations for binary black holes (BBHs) are compared. We combine results from
the two ap... | [
{
"created": "Tue, 5 Apr 2022 17:35:51 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Dec 2022 16:24:40 GMT",
"version": "v2"
}
] | 2022-12-07 | [
[
"Chattaraj",
"Abhishek",
""
],
[
"RoyChowdhury",
"Tamal",
""
],
[
"Divyajyoti",
"",
""
],
[
"Mishra",
"Chandra Kant",
""
],
[
"Gupta",
"Anshu",
""
]
] | Spherical harmonic modes of gravitational waveforms for inspiraling compact binaries in eccentric orbits from post-Newtonian (PN) theory accurate to third post-Newtonian order, and those extracted from numerical relativity (NR) simulations for binary black holes (BBHs) are compared. We combine results from the two appr... |
gr-qc/0612009 | Yu Zhang | Yu Zhang and Y X Gui | Quasinormal modes of gravitational perturbation around a Schwarzschild
black hole surrounded by quintessence | null | Class.Quant.Grav.23:6141-6147,2006 | 10.1088/0264-9381/23/22/004 | null | gr-qc astro-ph | null | In this paper, the quasinormal modes of gravitational perturbation around a
Schwarzschild black hole surrounded by quintessence were evaluated by using the
third-order WKB approximation. Due to the presence of quintessence, the
gravitational wave damps more slowly.
| [
{
"created": "Fri, 1 Dec 2006 12:15:23 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Zhang",
"Yu",
""
],
[
"Gui",
"Y X",
""
]
] | In this paper, the quasinormal modes of gravitational perturbation around a Schwarzschild black hole surrounded by quintessence were evaluated by using the third-order WKB approximation. Due to the presence of quintessence, the gravitational wave damps more slowly. |
2103.12696 | Hao Wei | Hao Wei, Zhong-Xi Yu | Inverse Chameleon Mechanism and Mass Limits for Compact Stars | 18 pages, 1 figure, revtex4; v2: discussions added, JCAP in press;
v3: published version | JCAP 2108 (2021) 011 | 10.1088/1475-7516/2021/08/011 | null | gr-qc astro-ph.HE astro-ph.SR hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As is well known, there are various mass limits for compact stars. For
example, the maximum mass for non-rotating white dwarfs is given by the famous
Chandrasekhar limit about $1.4 M_\odot$ (solar masses). Although the mass limit
for neutron stars is not so clear to date, one of the widely accepted values is
about $2... | [
{
"created": "Tue, 23 Mar 2021 17:19:00 GMT",
"version": "v1"
},
{
"created": "Sat, 17 Jul 2021 09:56:00 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Aug 2021 09:58:00 GMT",
"version": "v3"
}
] | 2021-08-11 | [
[
"Wei",
"Hao",
""
],
[
"Yu",
"Zhong-Xi",
""
]
] | As is well known, there are various mass limits for compact stars. For example, the maximum mass for non-rotating white dwarfs is given by the famous Chandrasekhar limit about $1.4 M_\odot$ (solar masses). Although the mass limit for neutron stars is not so clear to date, one of the widely accepted values is about $2.1... |
2012.06877 | Tom McClain Ph.D. | Tom McClain | Obstacles to the quantization of general relativity using symplectic
structures | 10 pages. Based on a presentation at the Second Hermann Minkowski
Meeting on the Foundations of Spacetime Physics. Appears in "Spacetime: 1909
- 2019." Reinoud Jan Slagter and Zoltan Keresztes (Editors). Minkowski
Institute Press, 2020 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper I give overviews of the polysymplectic approach to covariant
Hamiltonian field theory and the simplest geometric quantization of classical
particle theories. I then give a synopsis of a recently proposed toy model for
applying this geometric quantization map to polysymplectic field theory. I show
that n... | [
{
"created": "Sat, 12 Dec 2020 17:58:06 GMT",
"version": "v1"
}
] | 2020-12-15 | [
[
"McClain",
"Tom",
""
]
] | In this paper I give overviews of the polysymplectic approach to covariant Hamiltonian field theory and the simplest geometric quantization of classical particle theories. I then give a synopsis of a recently proposed toy model for applying this geometric quantization map to polysymplectic field theory. I show that no ... |
gr-qc/9706029 | Don N. Page | Don N. Page (Canadian Institute for Advanced Research and Theoretical
Physics Institute, University of Alberta, Edmonton, Canada) | Maximal Acceleration Is Nonrotating | 64 pages, no figures, LaTeX, Sections 10 and 11 added with
applications to maximally rotating stellar models of Cook, Shapiro, and
Teukolsky and to the Sun and Solar System with recent data from Pijpers that
the Sun has angular momentum 1.80 x 10^{75} = 0.216 M^2 = 47 hectares = 116
acres (with 0.8% uncertainty... | Class.Quant.Grav. 15 (1998) 1669-1719 | 10.1088/0264-9381/15/6/020 | Alberta-Thy-11-97 | gr-qc | null | In a stationary axisymmetric spacetime, the angular velocity of a stationary
observer that Fermi-Walker transports its acceleration vector is also the
angular velocity that locally extremizes the magnitude of the acceleration of
such an observer, and conversely if the spacetime is also symmetric under
reversing both ... | [
{
"created": "Tue, 10 Jun 1997 23:05:02 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Mar 1998 00:26:45 GMT",
"version": "v2"
}
] | 2009-10-30 | [
[
"Page",
"Don N.",
"",
"Canadian Institute for Advanced Research and Theoretical\n Physics Institute, University of Alberta, Edmonton, Canada"
]
] | In a stationary axisymmetric spacetime, the angular velocity of a stationary observer that Fermi-Walker transports its acceleration vector is also the angular velocity that locally extremizes the magnitude of the acceleration of such an observer, and conversely if the spacetime is also symmetric under reversing both t ... |
1005.3746 | Evan Goetz | E. Goetz and R. L. Savage Jr | Calibration of the LIGO displacement actuators via laser frequency
modulation | 10 pages, 5 figures, submitted to Classical and Quantum Gravity | Class.Quant.Grav.27:215001,2010 | 10.1088/0264-9381/27/21/215001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a frequency modulation technique for calibration of the
displacement actuators of the LIGO 4-km-long interferometric gravitational-wave
detectors. With the interferometer locked in a single-arm configuration, we
modulate the frequency of the laser light, creating an effective length
variation that we calib... | [
{
"created": "Thu, 20 May 2010 16:03:11 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Jul 2010 22:17:08 GMT",
"version": "v2"
}
] | 2015-03-17 | [
[
"Goetz",
"E.",
""
],
[
"Savage",
"R. L.",
"Jr"
]
] | We present a frequency modulation technique for calibration of the displacement actuators of the LIGO 4-km-long interferometric gravitational-wave detectors. With the interferometer locked in a single-arm configuration, we modulate the frequency of the laser light, creating an effective length variation that we calibra... |
2305.04776 | Haroldo Cilas Duarte Lima Junior | Marco A. A. de Paula, Haroldo C. D. Lima Junior, Pedro V. P. Cunha and
Lu\'is C. B. Crispino | Electrically charged regular black holes in nonlinear electrodynamics:
light rings, shadows and gravitational lensing | 16 pages, 13 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Within nonlinear electrodynamics (NED), photons follow null geodesics of an
effective geometry, which is different from the geometry of the spacetime
itself. Over the last years, several works were dedicated to investigate the
motion of photons in the effective geometry of NED-based magnetically charged
regular black... | [
{
"created": "Mon, 8 May 2023 15:26:20 GMT",
"version": "v1"
}
] | 2023-05-09 | [
[
"de Paula",
"Marco A. A.",
""
],
[
"Junior",
"Haroldo C. D. Lima",
""
],
[
"Cunha",
"Pedro V. P.",
""
],
[
"Crispino",
"Luís C. B.",
""
]
] | Within nonlinear electrodynamics (NED), photons follow null geodesics of an effective geometry, which is different from the geometry of the spacetime itself. Over the last years, several works were dedicated to investigate the motion of photons in the effective geometry of NED-based magnetically charged regular black h... |
1110.2007 | Stefanos Aretakis | Stefanos Aretakis | Stability and Instability of Extreme Reissner-Nordstr\"om Black Hole
Spacetimes for Linear Scalar Perturbations I | 37 pages, 11 figures; published version of results contained in the
first part of arXiv:1006.0283, various new results added | Comm. Math. Phys. 307 (2011), 17-63 | 10.1007/s00220-011-1254-5 | null | gr-qc math-ph math.AP math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the problem of stability and instability of extreme
Reissner-Nordstrom spacetimes for linear scalar perturbations. Specifically, we
consider solutions to the linear wave equation on a suitable globally
hyperbolic subset of such a spacetime, arising from regular initial data
prescribed on a Cauchy hypersurfac... | [
{
"created": "Mon, 10 Oct 2011 11:19:04 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Aretakis",
"Stefanos",
""
]
] | We study the problem of stability and instability of extreme Reissner-Nordstrom spacetimes for linear scalar perturbations. Specifically, we consider solutions to the linear wave equation on a suitable globally hyperbolic subset of such a spacetime, arising from regular initial data prescribed on a Cauchy hypersurface ... |
2405.08303 | Gregory Horndeski Ph.D. | Gregory W. Horndeski | Second-Order Bi-Scalar-Tensor Field Equations in a Space of
Four-Dimensions | 55 pages with no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lagrange scalar densities which are concomitants of two scalar fields, a
pseudo-Riemannian metric tensor, and their derivatives of arbitrary
differential order are investigated in a space of four-dimensions. The most
general second-order Euler-Lagrange tensor densities derivable from such a
Lagrangian are constructed... | [
{
"created": "Tue, 14 May 2024 03:58:08 GMT",
"version": "v1"
}
] | 2024-05-15 | [
[
"Horndeski",
"Gregory W.",
""
]
] | Lagrange scalar densities which are concomitants of two scalar fields, a pseudo-Riemannian metric tensor, and their derivatives of arbitrary differential order are investigated in a space of four-dimensions. The most general second-order Euler-Lagrange tensor densities derivable from such a Lagrangian are constructed. ... |
2209.03928 | Jo\~ao Marto | K. Sravan Kumar, Jo\~ao Marto | Parity asymmetry of primordial scalar and tensor power spectra | 6 pages, 2 figures. Title changed, figures updated and references
added | null | null | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | Although the cosmic microwave background (CMB) is largely understood to be
homogeneous and isotropic, the CMB power presents anomalies that seem to break
down parity symmetry at large angular scales. We argue that the primordial
scalar and tensor power spectra can be parity asymmetric by considering the
existence of ... | [
{
"created": "Thu, 8 Sep 2022 17:10:09 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Sep 2022 10:55:40 GMT",
"version": "v2"
},
{
"created": "Wed, 21 Jun 2023 17:18:55 GMT",
"version": "v3"
},
{
"created": "Tue, 4 Jun 2024 13:13:20 GMT",
"version": "v4"
}
] | 2024-06-05 | [
[
"Kumar",
"K. Sravan",
""
],
[
"Marto",
"João",
""
]
] | Although the cosmic microwave background (CMB) is largely understood to be homogeneous and isotropic, the CMB power presents anomalies that seem to break down parity symmetry at large angular scales. We argue that the primordial scalar and tensor power spectra can be parity asymmetric by considering the existence of tw... |
2312.14041 | Shao-Jiang Wang | Li Hu, Rong-Gen Cai, Shao-Jiang Wang | Distinctive GWBs from eccentric inspiraling SMBH binaries with a DM
spike | v1, 5 pages + references + supplemental material, 6 figures; v2,
references added; v3, discussions extended and references added | null | null | null | gr-qc astro-ph.CO astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent detections of a low-frequency gravitational wave background (GWB) from
various pulsar-timing-array (PTA) observations have renewed the interest in the
inspiraling supermassive black hole binaries (SMBHBs), whose population is
believed to be the most promising candidate of but disfavored by the observed
GWB spe... | [
{
"created": "Thu, 21 Dec 2023 17:08:56 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jan 2024 17:22:23 GMT",
"version": "v2"
},
{
"created": "Thu, 25 Jan 2024 03:32:20 GMT",
"version": "v3"
}
] | 2024-01-26 | [
[
"Hu",
"Li",
""
],
[
"Cai",
"Rong-Gen",
""
],
[
"Wang",
"Shao-Jiang",
""
]
] | Recent detections of a low-frequency gravitational wave background (GWB) from various pulsar-timing-array (PTA) observations have renewed the interest in the inspiraling supermassive black hole binaries (SMBHBs), whose population is believed to be the most promising candidate of but disfavored by the observed GWB spect... |
2404.09864 | Lorenzo Iorio | Lorenzo Iorio | Measuring a gravitomagentic effect with the triple pulsar PSR J0337+1715 | LaTex2e, 6 pages, no figures, no tables | Universe 2024, 10(5), 206 | 10.3390/universe10050206 | null | gr-qc astro-ph.HE astro-ph.SR physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To the first post--Newtonian order, the orbital angular momentum of the
fast--revolving inner binary of the triple system PSR J0337+1715, made of a
millisecond pulsar and a white dwarf, induces an annular gravitomagnetic field
which displaces the line of apsides of the slower orbit of the other, distant
white dwarf b... | [
{
"created": "Mon, 15 Apr 2024 15:21:12 GMT",
"version": "v1"
}
] | 2024-05-10 | [
[
"Iorio",
"Lorenzo",
""
]
] | To the first post--Newtonian order, the orbital angular momentum of the fast--revolving inner binary of the triple system PSR J0337+1715, made of a millisecond pulsar and a white dwarf, induces an annular gravitomagnetic field which displaces the line of apsides of the slower orbit of the other, distant white dwarf by ... |
2405.08062 | Suvendu Giri | Suvendu Giri, Ulf Danielsson, Luis Lehner, Frans Pretorius | Exploring Black Hole Mimickers: Electromagnetic and Gravitational
Signatures of AdS Black Shells | 18 pages | null | null | UUITP-12/24 | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We study electromagnetic and gravitational properties of AdS black shells
(also referred to as AdS black bubbles) -- a class of quantum gravity motivated
black hole mimickers, that in the classical limit are described as ultra
compact shells of matter. We find that their electromagnetic properties are
remarkably simi... | [
{
"created": "Mon, 13 May 2024 18:00:00 GMT",
"version": "v1"
}
] | 2024-05-15 | [
[
"Giri",
"Suvendu",
""
],
[
"Danielsson",
"Ulf",
""
],
[
"Lehner",
"Luis",
""
],
[
"Pretorius",
"Frans",
""
]
] | We study electromagnetic and gravitational properties of AdS black shells (also referred to as AdS black bubbles) -- a class of quantum gravity motivated black hole mimickers, that in the classical limit are described as ultra compact shells of matter. We find that their electromagnetic properties are remarkably simila... |
1809.03480 | Antonin Coutant | Antonin Coutant, Peter Millington | Quasi-normal modes and fermionic vacuum decay around a Kerr black hole | 25 pages, 2 figures. V2: contains additional minor clarifications,
along with corrections to Fig. 2, and Eqs. (45), (46) and (53), which were
overlooked in the published version. Selected for a CQG+ insight article | Class. Quant. Grav. 36 (2019) 035005 | 10.1088/1361-6382/aaf679 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the instability of the non-rotating fermion vacuum in Kerr
spacetimes. We describe how the co-rotating Fermi sea is formed as a result of
a spontaneous vacuum decay. Most significantly, and drawing upon intuition
gained from analogous electrodynamic processes in supercritical fields, we show
that this deca... | [
{
"created": "Mon, 10 Sep 2018 17:51:58 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Jan 2019 10:47:43 GMT",
"version": "v2"
}
] | 2019-01-21 | [
[
"Coutant",
"Antonin",
""
],
[
"Millington",
"Peter",
""
]
] | We analyze the instability of the non-rotating fermion vacuum in Kerr spacetimes. We describe how the co-rotating Fermi sea is formed as a result of a spontaneous vacuum decay. Most significantly, and drawing upon intuition gained from analogous electrodynamic processes in supercritical fields, we show that this decay ... |
0706.0179 | Mairi Sakellariadou | William Nelson and Mairi Sakellariadou (King's College, London) | Lattice Refining Loop Quantum Cosmology and Inflation | 12 pages, RevTex Two minor changes to match version to appear in
Physical Review D | Phys.Rev.D76:044015,2007 | 10.1103/PhysRevD.76.044015 | null | gr-qc astro-ph hep-ph hep-th | null | We study the importance of lattice refinement in achieving a successful
inflationary era. We solve, in the continuum limit, the second order difference
equation governing the quantum evolution in loop quantun cosmology, assuming
both a fixed and a dynamically varying lattice in a suitable refinement model.
We thus im... | [
{
"created": "Fri, 1 Jun 2007 15:40:37 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Jun 2007 08:59:10 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Nelson",
"William",
"",
"King's College, London"
],
[
"Sakellariadou",
"Mairi",
"",
"King's College, London"
]
] | We study the importance of lattice refinement in achieving a successful inflationary era. We solve, in the continuum limit, the second order difference equation governing the quantum evolution in loop quantun cosmology, assuming both a fixed and a dynamically varying lattice in a suitable refinement model. We thus impo... |
1803.01342 | Bruno Carvalho Neves | Bruno Neves | A topological-like gravity model in a four dimensional space-time | Doctoral thesis, in Portuguese | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we consider a model for gravity in 4-dimensional space-time
originally proposed by A. Chamseddine which may be derived by a 5-dimensional
Chern-Simons theory. Its topological origin makes it an interesting candidate
for an easier quantization, e.g., in loop quantization framework. The present
work is ded... | [
{
"created": "Sun, 4 Mar 2018 11:53:57 GMT",
"version": "v1"
}
] | 2018-03-06 | [
[
"Neves",
"Bruno",
""
]
] | In this work we consider a model for gravity in 4-dimensional space-time originally proposed by A. Chamseddine which may be derived by a 5-dimensional Chern-Simons theory. Its topological origin makes it an interesting candidate for an easier quantization, e.g., in loop quantization framework. The present work is dedic... |
gr-qc/0104039 | Bin Zhou | Bin Zhou | Global Structure of Certain Static Spacetimes (I) | Plain LaTeX, 10 pages, no figures | null | null | null | gr-qc | null | In this paper, static spacetimes with a topological structure of R^2 \times N
is studied, where N is an arbitrary manifold. Well known Schwarzschild
spacetime and Reissner-Nordstrom spacetime are special cases. It is shown that
the existence of a constant and positive surface gravity $\kappa$ ensures the
existence of... | [
{
"created": "Fri, 13 Apr 2001 20:11:04 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Zhou",
"Bin",
""
]
] | In this paper, static spacetimes with a topological structure of R^2 \times N is studied, where N is an arbitrary manifold. Well known Schwarzschild spacetime and Reissner-Nordstrom spacetime are special cases. It is shown that the existence of a constant and positive surface gravity $\kappa$ ensures the existence of t... |
2209.09265 | Alex Pandya | Alex Pandya, Elias R. Most, Frans Pretorius | Causal, stable first-order viscous relativistic hydrodynamics with ideal
gas microphysics | 22 pages, 7 figures, updated to match published version (PRD) | null | 10.1103/PhysRevD.106.123036 | null | gr-qc astro-ph.HE nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the first numerical analysis of causal, stable first-order
relativistic hydrodynamics with ideal gas microphysics, based in the formalism
developed by Bemfica, Disconzi, Noronha, and Kovtun (BDNK theory). The BDNK
approach provides definitions for the conserved stress-energy tensor and baryon
current, and ... | [
{
"created": "Mon, 19 Sep 2022 18:00:05 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Jan 2023 03:57:09 GMT",
"version": "v2"
}
] | 2023-01-03 | [
[
"Pandya",
"Alex",
""
],
[
"Most",
"Elias R.",
""
],
[
"Pretorius",
"Frans",
""
]
] | We present the first numerical analysis of causal, stable first-order relativistic hydrodynamics with ideal gas microphysics, based in the formalism developed by Bemfica, Disconzi, Noronha, and Kovtun (BDNK theory). The BDNK approach provides definitions for the conserved stress-energy tensor and baryon current, and ri... |
1601.07828 | Seyed Meraj Mousavi Rasouli | S. M. M. Rasouli and Paulo Vargas Moniz | Exact Cosmological Solutions in Modified Brans-Dicke Theory | 23 pages, 8 figures; version accepted for publication in CQG | Classical and Quantum Gravity, Volume 33, 035006, 2016 | 10.1088/0264-9381/33/3/035006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we obtain exact cosmological vacuum solutions for an extended
FLRW homogenous and isotropic Brans-Dicke (BD) universe in five dimensions for
all values of the curvature index. Then, by employing the equations associated
to a modified Brans-Dicke theory (MBDT) [1], we construct the physics on a
four-dim... | [
{
"created": "Thu, 28 Jan 2016 16:49:52 GMT",
"version": "v1"
},
{
"created": "Sun, 3 Jul 2016 14:15:37 GMT",
"version": "v2"
}
] | 2016-07-05 | [
[
"Rasouli",
"S. M. M.",
""
],
[
"Moniz",
"Paulo Vargas",
""
]
] | In this paper, we obtain exact cosmological vacuum solutions for an extended FLRW homogenous and isotropic Brans-Dicke (BD) universe in five dimensions for all values of the curvature index. Then, by employing the equations associated to a modified Brans-Dicke theory (MBDT) [1], we construct the physics on a four-dimen... |
gr-qc/0503120 | John Ellis | John Ellis, N.E. Mavromatos, D.V. Nanopoulos | The String Coupling Accelerates the Expansion of the Universe | 7 pages | Gen.Rel.Grav.37:1665-1670,2005; Int.J.Mod.Phys.D14:2327-2334,2005 | 10.1142/S0218271805008042 10.1007/s10714-005-0147-3 | CERN-PH-TH/2005-052 | gr-qc | null | Generic cosmological models in non-critical string theory have a
time-dependent dilaton background at a late epoch. The cosmological
deceleration parameter Q_0 is given by the square of the string coupling,
g_s^2, up to a negative sign. Hence the expansion of the Universe must
accelerate eventually, and the observed ... | [
{
"created": "Wed, 30 Mar 2005 17:02:06 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Ellis",
"John",
""
],
[
"Mavromatos",
"N. E.",
""
],
[
"Nanopoulos",
"D. V.",
""
]
] | Generic cosmological models in non-critical string theory have a time-dependent dilaton background at a late epoch. The cosmological deceleration parameter Q_0 is given by the square of the string coupling, g_s^2, up to a negative sign. Hence the expansion of the Universe must accelerate eventually, and the observed va... |
1112.1534 | Diego Pavon | Sergio del Campo, Ramon Herrera and Diego Pavon (UAB) | The generalized second law in the emergent universe | 8 pages, 1 figure; to be published in Phys. Letters B | null | 10.1016/j.physletb.2011.12.014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper studies whether the generalized second law of thermodynamics is
fulfilled in the transition from a generic initial Einstein static phase to the
inflationary phase, with constant Hubble rate, and from the end of the latter
to the conventional era of thermal radiation dominated expansion. As it turns
out, th... | [
{
"created": "Wed, 7 Dec 2011 11:58:16 GMT",
"version": "v1"
}
] | 2015-06-03 | [
[
"del Campo",
"Sergio",
"",
"UAB"
],
[
"Herrera",
"Ramon",
"",
"UAB"
],
[
"Pavon",
"Diego",
"",
"UAB"
]
] | This paper studies whether the generalized second law of thermodynamics is fulfilled in the transition from a generic initial Einstein static phase to the inflationary phase, with constant Hubble rate, and from the end of the latter to the conventional era of thermal radiation dominated expansion. As it turns out, the ... |
2106.06043 | Susanne Schander | S. Schander, T. Thiemann | Backreaction in Cosmology | 41 pages | Front. Astron. Space Sci. 8:692198, 2021 | 10.3389/fspas.2021.692198 | null | gr-qc hep-th math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this review, we investigate the question of backreaction in different
approaches to cosmological perturbation theory, and with a special focus on
quantum theoretical aspects. By backreaction, we refer here to the effects of
matter field or cosmological inhomogeneities on the homogeneous dynamical
background degree... | [
{
"created": "Thu, 10 Jun 2021 20:56:31 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Jun 2021 23:10:42 GMT",
"version": "v2"
}
] | 2021-07-29 | [
[
"Schander",
"S.",
""
],
[
"Thiemann",
"T.",
""
]
] | In this review, we investigate the question of backreaction in different approaches to cosmological perturbation theory, and with a special focus on quantum theoretical aspects. By backreaction, we refer here to the effects of matter field or cosmological inhomogeneities on the homogeneous dynamical background degrees ... |
gr-qc/0004060 | Martin Goliath | Alan Coley and Martin Goliath | Closed cosmologies with a perfect fluid and a scalar field | 15 pages, 10 figures | Phys.Rev. D62 (2000) 043526 | 10.1103/PhysRevD.62.043526 | null | gr-qc | null | Closed, spatially homogeneous cosmological models with a perfect fluid and a
scalar field with exponential potential are investigated, using dynamical
systems methods. First, we consider the closed Friedmann-Robertson-Walker
models, discussing the global dynamics in detail. Next, we investigate
Kantowski-Sachs models... | [
{
"created": "Wed, 19 Apr 2000 13:29:13 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Coley",
"Alan",
""
],
[
"Goliath",
"Martin",
""
]
] | Closed, spatially homogeneous cosmological models with a perfect fluid and a scalar field with exponential potential are investigated, using dynamical systems methods. First, we consider the closed Friedmann-Robertson-Walker models, discussing the global dynamics in detail. Next, we investigate Kantowski-Sachs models, ... |
gr-qc/0612173 | Dan Gorbonos | Dan Gorbonos, Gershon Wolansky | A Simplified Mathematical Model for the Formation of Null Singularities
Inside Black Holes II | 25 pages, 10 figures | J.Math.Phys.48:092503,2007 | 10.1063/1.2779949 | null | gr-qc | null | We study a simple system of two hyperbolic semi-linear equations, inspired by
the Einstein equations. The system, which was introduced in gr-qc/0612136, is a
model for singularity formation inside black holes. We show for a particular
case of the equations that the system demonstrates a finite time blowup. The
singul... | [
{
"created": "Wed, 27 Dec 2006 21:01:17 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Gorbonos",
"Dan",
""
],
[
"Wolansky",
"Gershon",
""
]
] | We study a simple system of two hyperbolic semi-linear equations, inspired by the Einstein equations. The system, which was introduced in gr-qc/0612136, is a model for singularity formation inside black holes. We show for a particular case of the equations that the system demonstrates a finite time blowup. The singular... |
1604.06378 | Ennio Gozzi | Ennio Gozzi | NEWTON's trajectories versus MOND's trajectories | Improved the abstract, the conclusions and inserted some further new
references | Phys.Lett.B 766 (2017) 112-116 | 10.1016/j.physletb.2017.01.002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | MOND dynamics consists of a modification of the acceleration with respect to
the one provided by Newtonian mechanics. In this paper we investigate whether
it can be derived from a velocity-dependent deformation of the coordinates of
the systems. The conclusion is that it cannot be derived this way because of
the intr... | [
{
"created": "Thu, 21 Apr 2016 16:46:49 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Apr 2016 21:30:04 GMT",
"version": "v2"
},
{
"created": "Thu, 12 May 2016 16:28:16 GMT",
"version": "v3"
},
{
"created": "Wed, 25 May 2016 20:47:25 GMT",
"version": "v4"
},
{
"c... | 2017-02-01 | [
[
"Gozzi",
"Ennio",
""
]
] | MOND dynamics consists of a modification of the acceleration with respect to the one provided by Newtonian mechanics. In this paper we investigate whether it can be derived from a velocity-dependent deformation of the coordinates of the systems. The conclusion is that it cannot be derived this way because of the intrin... |
1006.2448 | Alex Nielsen | Alex B. Nielsen | The spatial relation between the event horizon and trapping horizon | 16 pages, 1 figure | Class.Quant.Grav.27:245016,2010 | 10.1088/0264-9381/27/24/245016 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The relation between event horizons and trapping horizons is investigated in
a number of different situations with emphasis on their role in thermodynamics.
A notion of constant change is introduced that in certain situations allows the
location of the event horizon to be found locally. When the black hole is
accreti... | [
{
"created": "Sat, 12 Jun 2010 09:27:13 GMT",
"version": "v1"
}
] | 2010-12-06 | [
[
"Nielsen",
"Alex B.",
""
]
] | The relation between event horizons and trapping horizons is investigated in a number of different situations with emphasis on their role in thermodynamics. A notion of constant change is introduced that in certain situations allows the location of the event horizon to be found locally. When the black hole is accreting... |
gr-qc/0503088 | L. C. Garcia de Andrade | L.C. Garcia de Andrade | Relativistic superfluid hydrodynamics | Latex file | null | null | null | gr-qc | null | Relativistic Riemannian superfluid hydrodynamics used in general relativity
to investigate superfluids in pulsars is extended to non-Riemannian background
spacetime endowed with Cartan torsion. From the Gross-Pitaeviskii (GP) it is
shown that in the weak field Cartan torsion approximation, the torsion vector
is ortho... | [
{
"created": "Mon, 21 Mar 2005 05:17:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"de Andrade",
"L. C. Garcia",
""
]
] | Relativistic Riemannian superfluid hydrodynamics used in general relativity to investigate superfluids in pulsars is extended to non-Riemannian background spacetime endowed with Cartan torsion. From the Gross-Pitaeviskii (GP) it is shown that in the weak field Cartan torsion approximation, the torsion vector is orthogo... |
1304.2482 | Luis Herrera | L. Herrera, J. Ib\'a\~nez and A. Di Prisco | Nature of the vorticity in the G\"{o}del spacetime | Revtex 4, 5 pages. To appear in Phys. Rev. D. Typos corrected and
references updated | Phys. Rev. D87, 087503 (2013) | 10.1103/PhysRevD.87.087503 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The physical meaning of the vorticity of the matter content in G\"{o}del
spacetime is analyzed in some detail. As we shall see, unlike the situation in
general stationnary axially symmetric spacetimes (Lewis--Papapetrou), the
vorticity in G\"{o}del spacetime is not associated to a circular flow of
superenergy on the ... | [
{
"created": "Tue, 9 Apr 2013 08:07:43 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Apr 2013 09:18:09 GMT",
"version": "v2"
}
] | 2015-06-15 | [
[
"Herrera",
"L.",
""
],
[
"Ibáñez",
"J.",
""
],
[
"Di Prisco",
"A.",
""
]
] | The physical meaning of the vorticity of the matter content in G\"{o}del spacetime is analyzed in some detail. As we shall see, unlike the situation in general stationnary axially symmetric spacetimes (Lewis--Papapetrou), the vorticity in G\"{o}del spacetime is not associated to a circular flow of superenergy on the pl... |
1211.6272 | Alessandro Tronconi | A.Yu. Kamenshchik, A. Tronconi, G. Venturi, S.Yu. Vernov | Reconstruction of Scalar Potentials in Modified Gravity Models | 12 pages, 2 figures, accepted for publication in PRD | Phys.Rev.D87:063503, 2013 | 10.1103/PhysRevD.87.063503 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We employ the superpotential technique for the reconstruction of cosmological
models with a non-minimally coupled scalar field evolving on a spatially flat
Friedmann-Robertson-Walker background. The key point in this method is that the
Hubble parameter is considered as a function of the scalar field and this
allows o... | [
{
"created": "Tue, 27 Nov 2012 11:07:41 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Feb 2013 15:14:41 GMT",
"version": "v2"
}
] | 2013-03-08 | [
[
"Kamenshchik",
"A. Yu.",
""
],
[
"Tronconi",
"A.",
""
],
[
"Venturi",
"G.",
""
],
[
"Vernov",
"S. Yu.",
""
]
] | We employ the superpotential technique for the reconstruction of cosmological models with a non-minimally coupled scalar field evolving on a spatially flat Friedmann-Robertson-Walker background. The key point in this method is that the Hubble parameter is considered as a function of the scalar field and this allows one... |
0909.0309 | Neda Bostani Dr. | N. Bostani and N. Farhangkhah | Non-Abelian Lovelock-Born-Infeld Topological Black Holes | 15 pages, no figure, references added | IJST (2012) A3: 259-266 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the asymptotically AdS solutions of the Einstein gravity with
hyperbolic horizons in the presence of $So(n(n-1)/2-1, 1)$ Yang-Mills fields
governed by the non-Abelian Born-Infeld lagrangian. We investigate the
properties of these solutions as well as their asymptotic behavior in varies
dimensions. The prop... | [
{
"created": "Wed, 2 Sep 2009 03:06:07 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Oct 2009 02:40:44 GMT",
"version": "v2"
}
] | 2018-03-29 | [
[
"Bostani",
"N.",
""
],
[
"Farhangkhah",
"N.",
""
]
] | We present the asymptotically AdS solutions of the Einstein gravity with hyperbolic horizons in the presence of $So(n(n-1)/2-1, 1)$ Yang-Mills fields governed by the non-Abelian Born-Infeld lagrangian. We investigate the properties of these solutions as well as their asymptotic behavior in varies dimensions. The proper... |
1708.04947 | Paul Klinger | Piotr T. Chru\'sciel, Erwann Delay, Paul Klinger | Non-singular spacetimes with a negative cosmological constant: IV.
Stationary black hole solutions with matter fields | 16 pages, journal accepted version | null | 10.1088/1361-6382/aa9e0c | UWThPh-2017-19 | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use an elliptic system of equations with complex coefficients for a set of
complex-valued tensor fields as a tool to construct infinite-dimensional
families of non-singular stationary black holes, real-valued Lorentzian
solutions of the Einstein-Maxwell-dilaton-scalar
fields-Yang-Mills-Higgs-Chern-Simons-$f(R)$ eq... | [
{
"created": "Wed, 16 Aug 2017 15:42:49 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Dec 2017 16:47:54 GMT",
"version": "v2"
}
] | 2017-12-13 | [
[
"Chruściel",
"Piotr T.",
""
],
[
"Delay",
"Erwann",
""
],
[
"Klinger",
"Paul",
""
]
] | We use an elliptic system of equations with complex coefficients for a set of complex-valued tensor fields as a tool to construct infinite-dimensional families of non-singular stationary black holes, real-valued Lorentzian solutions of the Einstein-Maxwell-dilaton-scalar fields-Yang-Mills-Higgs-Chern-Simons-$f(R)$ equa... |
2308.07360 | Gabriel Le\'on Ph.D. | Gabriel R. Bengochea, Gabriel Leon, Alejandro Perez and Daniel
Sudarsky | A clarification on prevailing misconceptions in unimodular gravity | 26 pages, 2 figures, references updated. Version accepted for
publication | JCAP 11 (2023) 011 | 10.1088/1475-7516/2023/11/011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The traditional presentation of Unimodular Gravity (UG) consists on
indicating that it is an alternative theory of gravity that restricts the
generic diffeomorphism invariance of General Relativity. In particular, as
often encountered in the literature, unlike General Relativity, Unimodular
Gravity is invariant solel... | [
{
"created": "Mon, 14 Aug 2023 15:50:20 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Nov 2023 18:47:04 GMT",
"version": "v2"
}
] | 2023-11-08 | [
[
"Bengochea",
"Gabriel R.",
""
],
[
"Leon",
"Gabriel",
""
],
[
"Perez",
"Alejandro",
""
],
[
"Sudarsky",
"Daniel",
""
]
] | The traditional presentation of Unimodular Gravity (UG) consists on indicating that it is an alternative theory of gravity that restricts the generic diffeomorphism invariance of General Relativity. In particular, as often encountered in the literature, unlike General Relativity, Unimodular Gravity is invariant solely ... |
1911.01307 | Edward Anderson | Edward Anderson | Lie Theory suffices to understand, and Locally Resolve, the Problem of
Time | 4 pages, including 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Lie claw digraph controls Background Independence and thus the Problem of
Time and indeed the Fundamental Nature of Physical Law. This has been
established in the realms of Flat and Differential Geometry with varying
amounts of extra mathematical structure. This Lie claw digraph has Generator
Closure at its centr... | [
{
"created": "Mon, 4 Nov 2019 16:15:01 GMT",
"version": "v1"
}
] | 2019-11-05 | [
[
"Anderson",
"Edward",
""
]
] | The Lie claw digraph controls Background Independence and thus the Problem of Time and indeed the Fundamental Nature of Physical Law. This has been established in the realms of Flat and Differential Geometry with varying amounts of extra mathematical structure. This Lie claw digraph has Generator Closure at its centre ... |
2312.01277 | Sayak Datta | Sayak Datta | Black holes immersed in dark matter: energy condition and sound speed | null | null | null | null | gr-qc astro-ph.GA astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | In this work, we study the impact of the environment around a black hole in
detail. We introduce non-vanishing radial pressure in a manner analogous to
compact stars. We examine both isotropic and anisotropic fluid configurations
with and without radial pressure respectively. Our focus extends beyond just
dark matter... | [
{
"created": "Sun, 3 Dec 2023 04:30:23 GMT",
"version": "v1"
},
{
"created": "Mon, 6 May 2024 07:44:32 GMT",
"version": "v2"
}
] | 2024-05-07 | [
[
"Datta",
"Sayak",
""
]
] | In this work, we study the impact of the environment around a black hole in detail. We introduce non-vanishing radial pressure in a manner analogous to compact stars. We examine both isotropic and anisotropic fluid configurations with and without radial pressure respectively. Our focus extends beyond just dark matter d... |
2006.09385 | Yen Chin Ong | Brett McInnes, Yen Chin Ong | Event Horizon Wrinklification | 12 pages, 3 figures | null | 10.1088/1361-6382/abce45 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The possible existence of stable black holes with entropies larger than the
corresponding Schwarzschild black hole has been discussed extensively. The
recently proposed "rough" black holes provide a concrete example of this. The
fear is that, in accordance with the Second Law of thermodynamics, the familiar
smooth-sk... | [
{
"created": "Tue, 16 Jun 2020 18:00:01 GMT",
"version": "v1"
}
] | 2021-02-03 | [
[
"McInnes",
"Brett",
""
],
[
"Ong",
"Yen Chin",
""
]
] | The possible existence of stable black holes with entropies larger than the corresponding Schwarzschild black hole has been discussed extensively. The recently proposed "rough" black holes provide a concrete example of this. The fear is that, in accordance with the Second Law of thermodynamics, the familiar smooth-skin... |
1212.1285 | Douglas A. Singleton | H.-J. Schmidt and D. Singleton | Exact radial solution in 2+1 gravity with a real scalar field | 13 pages, minor revisions, updated references, to be published PLB | Phys.Lett.B721:294-298,2013 | 10.1016/j.physletb.2013.03.007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we give some general considerations about circularly symmetric,
static space-times in 2+1 dimensions, focusing first on the surprising (at the
time) existence of the BTZ black hole solution. We show that BTZ black holes
and Schwarzschild black holes in 3+1 dimensions originate from different
definitions... | [
{
"created": "Thu, 6 Dec 2012 10:58:45 GMT",
"version": "v1"
},
{
"created": "Sat, 9 Mar 2013 14:12:38 GMT",
"version": "v2"
}
] | 2013-04-10 | [
[
"Schmidt",
"H. -J.",
""
],
[
"Singleton",
"D.",
""
]
] | In this paper we give some general considerations about circularly symmetric, static space-times in 2+1 dimensions, focusing first on the surprising (at the time) existence of the BTZ black hole solution. We show that BTZ black holes and Schwarzschild black holes in 3+1 dimensions originate from different definitions o... |
gr-qc/9911113 | Zoltan Perjes | Z. Perj\'es | Relativistic perfect fluid models | 10 pages, Presented at the Journees Relativistes 1999, Weimar
(September 12-17) | Annalen Phys. 9 (2000) 368-377 | 10.1002/(SICI)1521-3889(200005)9:3/5<368::AID-ANDP368>3.0.CO;2-Q | null | gr-qc | null | The various schemes for studying rigidly rotating perfect fluids in general
relativity are reviewed. General conclusions one may draw from these are: (i)
There is a need to restrict the scope of the possible ansatze, and (ii) the
angular behaviour is a valuable commodity. This latter observation follows from
a large ... | [
{
"created": "Sun, 28 Nov 1999 16:19:47 GMT",
"version": "v1"
}
] | 2017-09-27 | [
[
"Perjés",
"Z.",
""
]
] | The various schemes for studying rigidly rotating perfect fluids in general relativity are reviewed. General conclusions one may draw from these are: (i) There is a need to restrict the scope of the possible ansatze, and (ii) the angular behaviour is a valuable commodity. This latter observation follows from a large nu... |
gr-qc/0103092 | Ozay Gurtug | Ozay Gurtug and Mustafa Halilsoy | Null Singularities in Colliding Waves | 6 pages, no figures | null | null | null | gr-qc | null | Colliding Einstein-Maxwell-Scalar fields need not necessarily doomed to
become in a spacelike singularity. Examples are given in which null
singularities emerge as intermediate stages between a spacelike singularity and
a regular horizon.
| [
{
"created": "Mon, 26 Mar 2001 11:30:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gurtug",
"Ozay",
""
],
[
"Halilsoy",
"Mustafa",
""
]
] | Colliding Einstein-Maxwell-Scalar fields need not necessarily doomed to become in a spacelike singularity. Examples are given in which null singularities emerge as intermediate stages between a spacelike singularity and a regular horizon. |
gr-qc/0104064 | Slava G. Turyshev | John D. Anderson, Philip A. Laing, Eunice L. Lau, Anthony S. Liu,
Michael Martin Nieto and Slava G. Turyshev | Study of the anomalous acceleration of Pioneer 10 and 11 | Version 4, of 11 Apr. 2002, with errata appended | Phys.Rev.D65:082004,2002 | 10.1103/PhysRevD.65.082004 | LA-UR-00-5654 | gr-qc astro-ph physics.space-ph | null | Our previous analyses of radio Doppler and ranging data from distant
spacecraft in the solar system indicated that an apparent anomalous
acceleration is acting on Pioneer 10 and 11, with a magnitude a_P ~ 8 x 10^{-8}
cm/s^2, directed towards the Sun (anderson,moriond). Much effort has been
expended looking for possib... | [
{
"created": "Thu, 19 Apr 2001 22:42:49 GMT",
"version": "v1"
},
{
"created": "Tue, 15 May 2001 20:55:26 GMT",
"version": "v2"
},
{
"created": "Tue, 5 Feb 2002 21:05:21 GMT",
"version": "v3"
},
{
"created": "Thu, 11 Apr 2002 20:28:10 GMT",
"version": "v4"
},
{
"cr... | 2009-09-25 | [
[
"Anderson",
"John D.",
""
],
[
"Laing",
"Philip A.",
""
],
[
"Lau",
"Eunice L.",
""
],
[
"Liu",
"Anthony S.",
""
],
[
"Nieto",
"Michael Martin",
""
],
[
"Turyshev",
"Slava G.",
""
]
] | Our previous analyses of radio Doppler and ranging data from distant spacecraft in the solar system indicated that an apparent anomalous acceleration is acting on Pioneer 10 and 11, with a magnitude a_P ~ 8 x 10^{-8} cm/s^2, directed towards the Sun (anderson,moriond). Much effort has been expended looking for possible... |
2404.19470 | Valerio Faraoni | Julien Houle and Valerio Faraoni | New phenomenology in the first-order thermodynamics of scalar-tensor
gravity for Bianchi universes | 10 pages, no figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The phase space of Bianchi I universes in vacuum Brans-Dicke gravity is
analyzed in terms of physical variables. The behaviour of the solutions of the
field equations near the fixed points (which are solutions of Einstein gravity)
is compared with basic ideas of the recent first-order thermodynamics of
scalar-tensor ... | [
{
"created": "Tue, 30 Apr 2024 11:37:10 GMT",
"version": "v1"
}
] | 2024-05-01 | [
[
"Houle",
"Julien",
""
],
[
"Faraoni",
"Valerio",
""
]
] | The phase space of Bianchi I universes in vacuum Brans-Dicke gravity is analyzed in terms of physical variables. The behaviour of the solutions of the field equations near the fixed points (which are solutions of Einstein gravity) is compared with basic ideas of the recent first-order thermodynamics of scalar-tensor gr... |
0901.0448 | Salvatore Capozziello | S. Capozziello, A. Stabile, A. Troisi | A general solution in the Newtonian limit of f(R)- gravity | 5 pages | Mod.Phys.Lett.A24:659-665,2009 | 10.1142/S0217732309030382 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that any analytic $f(R)$-gravity model, in the metric approach,
presents a weak field limit where the standard Newtonian potential is corrected
by a Yukawa-like term. This general result has never been pointed out but often
derived for some particular theories. This means that only $f(R)=R$ allows to
recover ... | [
{
"created": "Mon, 5 Jan 2009 09:30:16 GMT",
"version": "v1"
}
] | 2009-04-21 | [
[
"Capozziello",
"S.",
""
],
[
"Stabile",
"A.",
""
],
[
"Troisi",
"A.",
""
]
] | We show that any analytic $f(R)$-gravity model, in the metric approach, presents a weak field limit where the standard Newtonian potential is corrected by a Yukawa-like term. This general result has never been pointed out but often derived for some particular theories. This means that only $f(R)=R$ allows to recover th... |
0803.4133 | Patricio S. Letelier | Marcelo Zimbres and Patricio S. Letelier | Multipolar corrections for Lense-Thirring precession | 6 pages, RevTex | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For stationary axially symmetric spacetimes we find a simple expression for
the Lense-Thirring precession in terms of the Ernst potential. This expression
is used to compute, in the weak field approximation, the major non-spherical
contributions to the precession of a gyroscope orbiting the Earth. We reproduce
previo... | [
{
"created": "Fri, 28 Mar 2008 14:43:45 GMT",
"version": "v1"
}
] | 2008-03-31 | [
[
"Zimbres",
"Marcelo",
""
],
[
"Letelier",
"Patricio S.",
""
]
] | For stationary axially symmetric spacetimes we find a simple expression for the Lense-Thirring precession in terms of the Ernst potential. This expression is used to compute, in the weak field approximation, the major non-spherical contributions to the precession of a gyroscope orbiting the Earth. We reproduce previous... |
1907.12278 | Nematollah Riazi | A. Farahani and N. Riazi | Dipole and String Solutions of the Kaluza-Klein Theory | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a Kaluza-Klein string solution of five-dimensional spacetime. We
study its physical properties as appearing in (3+1) spacetime. This metric
embraces several different aspects of solutions. The two most notable examples
are the dipole and the boosted dipole solutions. In general, the 4D metric is a
rotatin... | [
{
"created": "Mon, 29 Jul 2019 08:50:56 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Jan 2020 07:46:13 GMT",
"version": "v2"
}
] | 2020-01-22 | [
[
"Farahani",
"A.",
""
],
[
"Riazi",
"N.",
""
]
] | We consider a Kaluza-Klein string solution of five-dimensional spacetime. We study its physical properties as appearing in (3+1) spacetime. This metric embraces several different aspects of solutions. The two most notable examples are the dipole and the boosted dipole solutions. In general, the 4D metric is a rotating ... |
gr-qc/0111085 | Luisa T. Buchman | J. M. Bardeen and L. T. Buchman | Numerical Tests of Evolution Systems, Gauge Conditions, and Boundary
Conditions for 1D Colliding Gravitational Plane Waves | 29 pages, 11 figures, submitted to Phys. Rev. D | Phys.Rev. D65 (2002) 064037 | 10.1103/PhysRevD.65.064037 | null | gr-qc | null | We investigate how the accuracy and stability of numerical relativity
simulations of 1D colliding plane waves depends on choices of equation
formulations, gauge conditions, boundary conditions, and numerical methods, all
in the context of a first-order 3+1 approach to the Einstein equations, with
basic variables some... | [
{
"created": "Mon, 26 Nov 2001 20:52:08 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Bardeen",
"J. M.",
""
],
[
"Buchman",
"L. T.",
""
]
] | We investigate how the accuracy and stability of numerical relativity simulations of 1D colliding plane waves depends on choices of equation formulations, gauge conditions, boundary conditions, and numerical methods, all in the context of a first-order 3+1 approach to the Einstein equations, with basic variables some c... |
2404.05957 | Songbai Chen | Zelin Zhang, Songbai Chen, Jiliang Jing | Constraining a disformal Schwarzschild black hole in DHOST theories with
the orbit of the S2 star | 13 pages, 3 figures. To be appeared in EPJC | null | null | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With the observed data of the S2 orbit around the black hole Sgr A$^*$ and
the Markov Chain Monte Carlo method, we make a constraint on parameters of a
disformal Schwarzschild black hole in quadratic degenerate higher-order
scalar-tensor (DHOST) theories. This black hole belongs to a class of
non-stealth solutions an... | [
{
"created": "Tue, 9 Apr 2024 02:32:14 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Aug 2024 00:07:07 GMT",
"version": "v2"
}
] | 2024-08-02 | [
[
"Zhang",
"Zelin",
""
],
[
"Chen",
"Songbai",
""
],
[
"Jing",
"Jiliang",
""
]
] | With the observed data of the S2 orbit around the black hole Sgr A$^*$ and the Markov Chain Monte Carlo method, we make a constraint on parameters of a disformal Schwarzschild black hole in quadratic degenerate higher-order scalar-tensor (DHOST) theories. This black hole belongs to a class of non-stealth solutions and ... |
1103.4758 | Eugen Radu | Burkhard Kleihaus, Jutta Kunz, Eugen Radu and Daniel Senkbeil | Electric charge on the brane? | v2: 21 pages, 4 figures; references added; changes in section 3 | Phys.Rev.D83:104050,2011 | 10.1103/PhysRevD.83.104050 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider black holes localized on the brane in the Randall-Sundrum
infinite braneworld model. These configurations are static and charged with
respect to a spherically symmetric, electric Maxwell field living on the brane.
We start by attempting to construct vacuum black holes, in which case our
conclusions are in... | [
{
"created": "Thu, 24 Mar 2011 13:02:50 GMT",
"version": "v1"
},
{
"created": "Sat, 26 Mar 2011 23:06:36 GMT",
"version": "v2"
}
] | 2011-06-07 | [
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Radu",
"Eugen",
""
],
[
"Senkbeil",
"Daniel",
""
]
] | We consider black holes localized on the brane in the Randall-Sundrum infinite braneworld model. These configurations are static and charged with respect to a spherically symmetric, electric Maxwell field living on the brane. We start by attempting to construct vacuum black holes, in which case our conclusions are in a... |
1708.03334 | Ofek Birnholtz | Alex B. Nielsen and Ofek Birnholtz | Testing pseudo-complex general relativity with gravitational waves | null | null | 10.1002/asna.201813473 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show how the model of pseudo-complex general relativity can be tested
using gravitational wave signals from coalescing compact objects. The model,
which agrees with Einstein gravity in the weak-field limit, diverges
dramatically in the near-horizon regime, with certain parameter ranges
excluding the existence of b... | [
{
"created": "Thu, 10 Aug 2017 18:00:18 GMT",
"version": "v1"
}
] | 2018-07-18 | [
[
"Nielsen",
"Alex B.",
""
],
[
"Birnholtz",
"Ofek",
""
]
] | We show how the model of pseudo-complex general relativity can be tested using gravitational wave signals from coalescing compact objects. The model, which agrees with Einstein gravity in the weak-field limit, diverges dramatically in the near-horizon regime, with certain parameter ranges excluding the existence of bla... |
1706.02782 | Thiago R.P. Caram\^es | Thiago R. P. Caram\^es, J\'ulio C. Fabris, E. R. Bezerra de Mello and
H. Belich | $f(R)$ global monopole revisited | 16 pages, 1 figure and 1 table. Minor changes to match published
version in EPJC | Eur. Phys. J. C (2017) 77: 496 | 10.1140/epjc/s10052-017-5057-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper the $f(R)$ global monopole is reexamined. We provide an exact
solution for the modified field equations in the presence of a global monopole
for regions outside its core, generalizing previous results. Additionally, we
discuss some particular cases obtained from this solution. We consider a setup
consis... | [
{
"created": "Thu, 8 Jun 2017 22:20:07 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Jul 2017 19:36:14 GMT",
"version": "v2"
}
] | 2017-07-27 | [
[
"Caramês",
"Thiago R. P.",
""
],
[
"Fabris",
"Júlio C.",
""
],
[
"de Mello",
"E. R. Bezerra",
""
],
[
"Belich",
"H.",
""
]
] | In this paper the $f(R)$ global monopole is reexamined. We provide an exact solution for the modified field equations in the presence of a global monopole for regions outside its core, generalizing previous results. Additionally, we discuss some particular cases obtained from this solution. We consider a setup consisti... |
1308.1658 | Genly Le\'on | Carlos R. Fadragas (Havana, Central de Las Villas U.), Genly Leon
(Valparaiso U., Catolica), Emmanuel N. Saridakis (Natl. Tech. U., Athens &
Valparaiso U., Catolica) | Dynamical analysis of anisotropic scalar-field cosmologies for a wide
range of potentials | 48 pages, 5 captioned figures. New sections have been added. Version
published at Class. Quant. Grav | Class. Quantum Grav. 31 (2014) 075018 | 10.1088/0264-9381/31/7/075018 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a detailed dynamical analysis of anisotropic scalar-field
cosmologies, and in particular of the most significant Kantowski-Sachs, Locally
Rotationally Symmetric (LRS) Bianchi I and LRS Bianchi III cases. We follow the
new and powerful method of $f$-devisers, which allows us to perform the whole
analysis fo... | [
{
"created": "Wed, 7 Aug 2013 19:03:49 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Mar 2014 16:09:35 GMT",
"version": "v2"
}
] | 2014-03-18 | [
[
"Fadragas",
"Carlos R.",
"",
"Havana, Central de Las Villas U."
],
[
"Leon",
"Genly",
"",
"Valparaiso U., Catolica"
],
[
"Saridakis",
"Emmanuel N.",
"",
"Natl. Tech. U., Athens &\n Valparaiso U., Catolica"
]
] | We perform a detailed dynamical analysis of anisotropic scalar-field cosmologies, and in particular of the most significant Kantowski-Sachs, Locally Rotationally Symmetric (LRS) Bianchi I and LRS Bianchi III cases. We follow the new and powerful method of $f$-devisers, which allows us to perform the whole analysis for ... |
1107.0937 | Patrick Meessen | P. Meessen, T. Ort\'in, A. Palomo-Lozano | On supersymmetric Einstein-Weyl spaces | 17 pages, version to be published in JGP | J. Geom. Phys. 62(2012), 301 | 10.1016/j.geomphys.2011.10.017 | FPAUO-11/01; IFT-UAM/CSIC-11-37 | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider weighted parallel spinors in Lorentzian Weyl geometry in
arbitrary dimensions, choosing the weight such that the integrability condition
for the existence of such a spinor, implies the geometry to be Einstein-Weyl.
We then use techniques developed for the classification of supersymmetric
solutions to supe... | [
{
"created": "Tue, 5 Jul 2011 18:37:06 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Jul 2011 17:06:03 GMT",
"version": "v2"
},
{
"created": "Fri, 28 Oct 2011 17:01:46 GMT",
"version": "v3"
}
] | 2011-11-16 | [
[
"Meessen",
"P.",
""
],
[
"Ortín",
"T.",
""
],
[
"Palomo-Lozano",
"A.",
""
]
] | We consider weighted parallel spinors in Lorentzian Weyl geometry in arbitrary dimensions, choosing the weight such that the integrability condition for the existence of such a spinor, implies the geometry to be Einstein-Weyl. We then use techniques developed for the classification of supersymmetric solutions to superg... |
1002.4596 | Lorenzo Iorio | Lorenzo Iorio | A-priori "imprinting" of General Relativity itself on some tests of it? | LaTex, 11 pages, no figures, no tables. Accepted in Advances in
Astronomy | Advances in Astronomy Volume 2010 (2010), Article ID 735487 | 10.1155/2010/735487 | null | gr-qc astro-ph.EP hep-ph physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the effect of possible a-priori "imprinting" effects of
general relativity itself on satellite/spaceraft-based tests of it. We deal
with some performed or proposed time-delay ranging experiments in the Sun's
gravitational field. It turns out that the "imprint" of general relativity on
the Astronomical ... | [
{
"created": "Wed, 24 Feb 2010 18:03:41 GMT",
"version": "v1"
}
] | 2010-02-25 | [
[
"Iorio",
"Lorenzo",
""
]
] | We investigate the effect of possible a-priori "imprinting" effects of general relativity itself on satellite/spaceraft-based tests of it. We deal with some performed or proposed time-delay ranging experiments in the Sun's gravitational field. It turns out that the "imprint" of general relativity on the Astronomical Un... |
2007.13851 | Andrzej Czarnecki | Anna Czarnecka and Andrzej Czarnecki | Gravitational time dilation, free fall, and matter waves | Added Reference 20, W. K. Wootters, Why Things Fall, Foundations of
Physics 33, 1549 (2003) | American Journal of Physics 89, 634-638 (2021) | 10.1119/10.0003448 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate that a de Broglie wave of a particle in a gravitational field
turns towards the region of a smaller gravitational potential, causing the
particle to fall. This turning is caused by clocks running slower in the
smaller potential. We use the analogy of ocean waves that are slower in
shallower water and t... | [
{
"created": "Mon, 27 Jul 2020 20:34:18 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Sep 2022 00:51:03 GMT",
"version": "v2"
}
] | 2022-09-07 | [
[
"Czarnecka",
"Anna",
""
],
[
"Czarnecki",
"Andrzej",
""
]
] | We demonstrate that a de Broglie wave of a particle in a gravitational field turns towards the region of a smaller gravitational potential, causing the particle to fall. This turning is caused by clocks running slower in the smaller potential. We use the analogy of ocean waves that are slower in shallower water and tur... |
2107.14523 | Shao-Wen Wei | Shao-Wen Wei, Yu-Xiao Liu | The microstructure and Ruppeiner geometry of charged anti-de Sitter
black holes in Gauss-Bonnet gravity: from the critical point to the triple
point | 17 pages, 11 figures, and 1 table | Commun.Theor.Phys. 74, 095402 (2022) | 10.1088/1572-9494/ac65ed | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Ruppeiner geometry has been successfully applied in the study of the black
hole microstructure by combining with the small-large black hole phase
transition, and the potential interactions among the molecular-like constituent
degrees of freedom are uncovered. In this paper, we will extend the study to
the triple poin... | [
{
"created": "Fri, 30 Jul 2021 10:10:39 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Feb 2024 09:34:56 GMT",
"version": "v2"
}
] | 2024-02-22 | [
[
"Wei",
"Shao-Wen",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | Ruppeiner geometry has been successfully applied in the study of the black hole microstructure by combining with the small-large black hole phase transition, and the potential interactions among the molecular-like constituent degrees of freedom are uncovered. In this paper, we will extend the study to the triple point,... |
1504.07854 | Saheb Soroushfar | Saheb Soroushfar, Reza Saffari, Jutta Kunz, Claus L\"ammerzahl | Analytical solutions of the geodesic equation in the spacetime of a
black hole in f(R) gravity | 28 pages, 23 figures, Accepted for publication in Physical Review D | Phys. Rev. D 92, 044010 (2015) | 10.1103/PhysRevD.92.044010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the motion of test particles in the spacetime of a black hole in
f(R) gravity. The complete set of analytic solutions of the geodesic equation
in the spacetime of this black hole are presented. The geodesic equations are
solved in terms of Weierstrass elliptic functions and derivatives of Kleinian
sigma f... | [
{
"created": "Wed, 29 Apr 2015 13:35:06 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Jul 2015 11:35:48 GMT",
"version": "v2"
}
] | 2015-08-19 | [
[
"Soroushfar",
"Saheb",
""
],
[
"Saffari",
"Reza",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Lämmerzahl",
"Claus",
""
]
] | We consider the motion of test particles in the spacetime of a black hole in f(R) gravity. The complete set of analytic solutions of the geodesic equation in the spacetime of this black hole are presented. The geodesic equations are solved in terms of Weierstrass elliptic functions and derivatives of Kleinian sigma fun... |
1605.00456 | Seyed Hossein Hendi Dr. | S. H. Hendi and M. S. Talezadeh | Nonlinearly charged dilatonic black holes and their Brans-Dicke
counterpart: Energy dependent spacetime | 11 pages without figure, typos are fixed. Accepted in Gen. Relativ.
Gravit | General Relativity and Gravitation 49 (2017) 12 | 10.1007/s10714-016-2176-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Regarding the wide applications of dilaton gravity in the presence of
electrodynamics, we introduce a suitable Lagrangian for the coupling of dilaton
with gauge field. There are various Lagrangians which show the coupling between
scalar fields and electrodynamics with correct special situations. In this
paper, taking... | [
{
"created": "Fri, 29 Apr 2016 10:38:55 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Dec 2016 06:34:11 GMT",
"version": "v2"
}
] | 2016-12-23 | [
[
"Hendi",
"S. H.",
""
],
[
"Talezadeh",
"M. S.",
""
]
] | Regarding the wide applications of dilaton gravity in the presence of electrodynamics, we introduce a suitable Lagrangian for the coupling of dilaton with gauge field. There are various Lagrangians which show the coupling between scalar fields and electrodynamics with correct special situations. In this paper, taking i... |
2308.01108 | Mehraveh Nikjoo | Mehraveh Nikjoo and Tom Zlosnik | Hamiltonian formulation of gravity as a spontaneously-broken gauge
theory of the Lorentz group | null | null | 10.1088/1361-6382/ad1c84 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | A number of approaches to gravitation have much in common with the gauge
theories of the standard model of particle physics. In this paper, we develop
the Hamiltonian formulation of a class of gravitational theories that may be
regarded as spontaneously-broken gauge theories of the complexified Lorentz
group $SO(1,3)... | [
{
"created": "Wed, 2 Aug 2023 12:36:28 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Jan 2024 16:50:37 GMT",
"version": "v2"
}
] | 2024-01-11 | [
[
"Nikjoo",
"Mehraveh",
""
],
[
"Zlosnik",
"Tom",
""
]
] | A number of approaches to gravitation have much in common with the gauge theories of the standard model of particle physics. In this paper, we develop the Hamiltonian formulation of a class of gravitational theories that may be regarded as spontaneously-broken gauge theories of the complexified Lorentz group $SO(1,3)_C... |
2407.18165 | Uwe R. Fischer | Satadal Datta, Uwe R. Fischer | Probing Penrose-type singularities in sonic black holes | 7+7 pages, 3+1 figures; version as submitted to journal | null | null | null | gr-qc cond-mat.quant-gas | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Addressing the general question whether Penrose singularities physically
exist inside black holes, we investigate the problem in the context of an
analogue system, a flowing laboratory liquid, for which the governing equations
are at least in principle known to all relevant scales, and in all regions of
the effective... | [
{
"created": "Thu, 25 Jul 2024 16:29:54 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Aug 2024 13:12:52 GMT",
"version": "v2"
}
] | 2024-08-09 | [
[
"Datta",
"Satadal",
""
],
[
"Fischer",
"Uwe R.",
""
]
] | Addressing the general question whether Penrose singularities physically exist inside black holes, we investigate the problem in the context of an analogue system, a flowing laboratory liquid, for which the governing equations are at least in principle known to all relevant scales, and in all regions of the effective s... |
gr-qc/0010089 | J. Frauendiener | J. Frauendiener and L. B. Szabados | The kernel of the edth operators on higher-genus spacelike two-surfaces | 12 pages | Class.Quant.Grav. 18 (2001) 1003-1014 | 10.1088/0264-9381/18/6/303 | null | gr-qc | null | The dimension of the kernels of the edth and edth-prime operators on closed,
orientable spacelike 2-surfaces with arbitrary genus is calculated, and some of
its mathematical and physical consequences are discussed.
| [
{
"created": "Tue, 24 Oct 2000 19:16:47 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Frauendiener",
"J.",
""
],
[
"Szabados",
"L. B.",
""
]
] | The dimension of the kernels of the edth and edth-prime operators on closed, orientable spacelike 2-surfaces with arbitrary genus is calculated, and some of its mathematical and physical consequences are discussed. |
2210.09357 | Kyriakos Destounis Dr. | Kyriakos Destounis, Arun Kulathingal, Kostas D. Kokkotas and Georgios
O. Papadopoulos | Gravitational-wave imprints of compact and galactic-scale environments
in extreme-mass-ratio binaries | 19 pages, 10 figures, revisions regarding detectability and addition
of new figures and sections, abstract reduced to fit arxiv limits, accepted
for publication in PRD | Phys. Rev. D 107, 084027 (2023) | 10.1103/PhysRevD.107.084027 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Circumambient and galactic-scale environments are intermittently present
around black holes that reside in active galactic nuclei. As supermassive black
holes impart energy on their host galaxy, so the galactic environment affects
the dynamics of solar-mass objects around black holes and the gravitational
waves emitt... | [
{
"created": "Mon, 17 Oct 2022 18:54:39 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Oct 2022 17:39:29 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Mar 2023 16:30:01 GMT",
"version": "v3"
}
] | 2023-04-19 | [
[
"Destounis",
"Kyriakos",
""
],
[
"Kulathingal",
"Arun",
""
],
[
"Kokkotas",
"Kostas D.",
""
],
[
"Papadopoulos",
"Georgios O.",
""
]
] | Circumambient and galactic-scale environments are intermittently present around black holes that reside in active galactic nuclei. As supermassive black holes impart energy on their host galaxy, so the galactic environment affects the dynamics of solar-mass objects around black holes and the gravitational waves emitted... |
1901.02553 | Carlos O. Lousto | James Healy, Carlos O. Lousto, Jacob Lange, Richard O'Shaughnessy,
Yosef Zlochower, Manuela Campanelli | The second RIT binary black hole simulations catalog and its application
to gravitational waves parameter estimation | 23 pages, 10 figures. Major extension of the GW150914 analysis | Phys. Rev. D 100, 024021 (2019) | 10.1103/PhysRevD.100.024021 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The RIT numerical relativity group is releasing the second public catalog of
black-hole-binary waveforms \url{http://ccrg.rit.edu/~RITCatalog}. This release
consists of 320 accurate simulations that include 46 precessing and 274
nonprecessing binary systems with mass ratios $q=m_1/m_2$ in the range $1/6\leq
q\leq1$ a... | [
{
"created": "Tue, 8 Jan 2019 23:16:13 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Jan 2019 14:12:57 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Mar 2019 19:54:14 GMT",
"version": "v3"
}
] | 2019-07-17 | [
[
"Healy",
"James",
""
],
[
"Lousto",
"Carlos O.",
""
],
[
"Lange",
"Jacob",
""
],
[
"O'Shaughnessy",
"Richard",
""
],
[
"Zlochower",
"Yosef",
""
],
[
"Campanelli",
"Manuela",
""
]
] | The RIT numerical relativity group is releasing the second public catalog of black-hole-binary waveforms \url{http://ccrg.rit.edu/~RITCatalog}. This release consists of 320 accurate simulations that include 46 precessing and 274 nonprecessing binary systems with mass ratios $q=m_1/m_2$ in the range $1/6\leq q\leq1$ and... |
gr-qc/0605019 | Mikolaj Korzynski | Mikolaj Korzynski | Isolated and dynamical horizons from a common perspective | 12 pages, one figure, revtex4. v2: added various references in
introduction and sec. 2, short discussion of applicability to slowly evolving
horizons in sec. 4B. Several minor corrections throughout text | Phys.Rev. D74 (2006) 104029 | 10.1103/PhysRevD.74.104029 | null | gr-qc | null | A framework is developed in which one can write down the constraint equations
on a three--dimensional hypersurface of arbitrary signature. It is then applied
to isolated and dynamical horizons. The derived equations can be used to
extract physicaly relevant quantities describing the horizon irrespective to
whether it... | [
{
"created": "Tue, 2 May 2006 16:53:49 GMT",
"version": "v1"
},
{
"created": "Sun, 7 May 2006 12:48:51 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Korzynski",
"Mikolaj",
""
]
] | A framework is developed in which one can write down the constraint equations on a three--dimensional hypersurface of arbitrary signature. It is then applied to isolated and dynamical horizons. The derived equations can be used to extract physicaly relevant quantities describing the horizon irrespective to whether it i... |
2401.07523 | Puxun Wu | Li-Yang Chen, Hongwei Yu and Puxun Wu | Resonant amplification of curvature perturbations in inflation model
with periodical derivative coupling | 19 pages, 4 figures, refs added | Phys. Lett. B 849 (2024) 138457 | 10.1016/j.physletb.2024.138457 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | In this paper, we introduce a weak, transient and periodical derivative
coupling between the inflaton field and gravity, and find that the square of
the sound speed of the curvature perturbations becomes a periodic function,
which results in that the equation of the curvature perturbations can be
transformed into the... | [
{
"created": "Mon, 15 Jan 2024 07:56:24 GMT",
"version": "v1"
},
{
"created": "Sun, 28 Jan 2024 03:00:36 GMT",
"version": "v2"
}
] | 2024-01-30 | [
[
"Chen",
"Li-Yang",
""
],
[
"Yu",
"Hongwei",
""
],
[
"Wu",
"Puxun",
""
]
] | In this paper, we introduce a weak, transient and periodical derivative coupling between the inflaton field and gravity, and find that the square of the sound speed of the curvature perturbations becomes a periodic function, which results in that the equation of the curvature perturbations can be transformed into the f... |
0904.2071 | J\"org Hennig | J\"org Hennig and Marcus Ansorg | The inner Cauchy horizon of axisymmetric and stationary black holes with
surrounding matter in Einstein-Maxwell theory: study in terms of soliton
methods | 21 pages, 1 figure | Annales Henri Poincare 10:1075-1095,2009 | 10.1007/s00023-009-0012-0 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use soliton methods in order to investigate the interior electrovacuum
region of axisymmetric and stationary, electrically charged black holes with
arbitrary surrounding matter in Einstein-Maxwell theory. These methods can be
applied since the Einstein-Maxwell vacuum equations permit the formulation in
terms of th... | [
{
"created": "Tue, 14 Apr 2009 08:03:24 GMT",
"version": "v1"
}
] | 2009-11-16 | [
[
"Hennig",
"Jörg",
""
],
[
"Ansorg",
"Marcus",
""
]
] | We use soliton methods in order to investigate the interior electrovacuum region of axisymmetric and stationary, electrically charged black holes with arbitrary surrounding matter in Einstein-Maxwell theory. These methods can be applied since the Einstein-Maxwell vacuum equations permit the formulation in terms of the ... |
2103.15012 | Juan Carlos Degollado | Miguel Alcubierre, Juan Barranco, Argelia Bernal, Juan Carlos
Degollado, Alberto Diez-Tejedor, Miguel Megevand, Dar\'io N\'u\~nez, Olivier
Sarbach | On the linear stability of $\ell$-boson stars with respect to radial
perturbations | 23, pages, 8 figures | null | 10.1088/1361-6382/ac0160 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In previous work we constructed new boson star solutions consisting of a
family of massive complex scalar fields minimally coupled to gravity in which
the individual fields have angular momentum, yet the configuration as a whole
is static and spherically symmetric. In the present article we study the linear
stability... | [
{
"created": "Sat, 27 Mar 2021 23:09:06 GMT",
"version": "v1"
}
] | 2021-09-01 | [
[
"Alcubierre",
"Miguel",
""
],
[
"Barranco",
"Juan",
""
],
[
"Bernal",
"Argelia",
""
],
[
"Degollado",
"Juan Carlos",
""
],
[
"Diez-Tejedor",
"Alberto",
""
],
[
"Megevand",
"Miguel",
""
],
[
"Núñez",
"Darío",
... | In previous work we constructed new boson star solutions consisting of a family of massive complex scalar fields minimally coupled to gravity in which the individual fields have angular momentum, yet the configuration as a whole is static and spherically symmetric. In the present article we study the linear stability o... |
2202.00786 | Stanley Deser | S.Deser | Why source-free gravity must be quantized | published version | Eur. Phys. J. C (2022) 82:424 | 10.1140/epjc/s10052-022-10375-0 | null | gr-qc hep-th physics.atom-ph | http://creativecommons.org/licenses/by/4.0/ | I show, on the most elementary grounds, its classical ultraviolet
catastrophe, that even source-free General Relativity must be quantized,
despite some eminent opinions to the contrary, an original result involving
some rather tricky subtleties.
| [
{
"created": "Tue, 1 Feb 2022 22:11:37 GMT",
"version": "v1"
},
{
"created": "Sun, 20 Nov 2022 02:04:09 GMT",
"version": "v2"
}
] | 2022-11-23 | [
[
"Deser",
"S.",
""
]
] | I show, on the most elementary grounds, its classical ultraviolet catastrophe, that even source-free General Relativity must be quantized, despite some eminent opinions to the contrary, an original result involving some rather tricky subtleties. |
1401.2587 | L. C. Garcia de Andrade | L. C. Garcia de Andrade (Departamento de fisica teorica UERJ) | Galactic dynamo seeds from non-superconducting spin-polarised strings | arXiv admin note: substantial text overlap with arXiv:gr-qc/0211072 | null | 10.1088/1475-7516/2014/08/023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Earlier Enqvist and Olesen have shown that formation of ferromagnetic planar
walls in vacuum at GUT scales in comoving plasmas may generate a large scale
magnetic field of $B_{now}\simeq{10^{-14}G}$. In this paper we show that
starting from classical Einstein-Cartan-Maxwell strong gravity, a
spin-polarised ferromagne... | [
{
"created": "Sun, 12 Jan 2014 03:40:23 GMT",
"version": "v1"
}
] | 2015-06-18 | [
[
"de Andrade",
"L. C. Garcia",
"",
"Departamento de fisica teorica UERJ"
]
] | Earlier Enqvist and Olesen have shown that formation of ferromagnetic planar walls in vacuum at GUT scales in comoving plasmas may generate a large scale magnetic field of $B_{now}\simeq{10^{-14}G}$. In this paper we show that starting from classical Einstein-Cartan-Maxwell strong gravity, a spin-polarised ferromagneti... |
1410.0638 | Marcelo Ponce | Marcelo Ponce, Carlos Palenzuela, Enrico Barausse and Luis Lehner | Electromagnetic outflows in a class of scalar-tensor theories: binary
neutron star coalescence | Improved presentation and figures; matches version accepted in PRD | Phys. Rev. D 91, 084038 (2015) | 10.1103/PhysRevD.91.084038 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As we showed in previous work, the dynamics and gravitational emission of
binary neutron star systems in certain scalar-tensor theories can differ
significantly from that expected from General Relativity in the coalescing
stage. In this work we examine whether the characteristics of the
electromagnetic counterparts t... | [
{
"created": "Thu, 2 Oct 2014 18:36:02 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Apr 2015 02:49:21 GMT",
"version": "v2"
}
] | 2015-04-22 | [
[
"Ponce",
"Marcelo",
""
],
[
"Palenzuela",
"Carlos",
""
],
[
"Barausse",
"Enrico",
""
],
[
"Lehner",
"Luis",
""
]
] | As we showed in previous work, the dynamics and gravitational emission of binary neutron star systems in certain scalar-tensor theories can differ significantly from that expected from General Relativity in the coalescing stage. In this work we examine whether the characteristics of the electromagnetic counterparts to ... |
2003.03903 | Andronikos Paliathanasis | Andronikos Paliathanasis and Genly Leon (Catolica del Norte U.) | Analytic solutions in Einstein-aether scalar field cosmology | 16 pages, 2 figures, to appear in EPJC | null | 10.1140/epjc/s10052-020-7924-8 | null | gr-qc astro-ph.CO math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of Einstein-aether scalar field cosmology we solve the field
equations and determine exact and analytic solutions. In particular, we
consider a model proposed by Kanno and Soda where the aether and the scalar
fields interact through the aether coefficient parameters, which are promoted
to be functions ... | [
{
"created": "Mon, 9 Mar 2020 03:25:24 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Apr 2020 10:37:12 GMT",
"version": "v2"
}
] | 2020-05-20 | [
[
"Paliathanasis",
"Andronikos",
"",
"Catolica del Norte U."
],
[
"Leon",
"Genly",
"",
"Catolica del Norte U."
]
] | In the context of Einstein-aether scalar field cosmology we solve the field equations and determine exact and analytic solutions. In particular, we consider a model proposed by Kanno and Soda where the aether and the scalar fields interact through the aether coefficient parameters, which are promoted to be functions of... |
1206.0698 | Kostiantyn Ropotenko | K. Ropotenko | Contradictory implications of the nonadditive entropy | 6 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the concept of nonadditive black hole entropy leads to the
contradictory implications in the framework of statistical thermodynamics. In
particular, a black hole with the nonadditive entropy cannot be in thermal
equilibrium with ordinary matter. Moreover, such black holes are mutually
exclusive, i.e.... | [
{
"created": "Mon, 4 Jun 2012 18:35:04 GMT",
"version": "v1"
}
] | 2012-06-05 | [
[
"Ropotenko",
"K.",
""
]
] | It is shown that the concept of nonadditive black hole entropy leads to the contradictory implications in the framework of statistical thermodynamics. In particular, a black hole with the nonadditive entropy cannot be in thermal equilibrium with ordinary matter. Moreover, such black holes are mutually exclusive, i.e. t... |
2105.14123 | Konstantin Osetrin | K.E. Osetrin, I.V. Kirnos, E.K. Osetrin, A.E. Filippov | Wave-like exact models with symmetry of spatial homogeneity in the
quadratic theory of gravity with a scalar field | 24 pages | Symmetry, 2021, 13(7),1173 | 10.3390/sym13071173 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Exact solutions are obtained in the quadratic theory of gravity with a scalar
field for wave-like models of space-time with spatial homogeneity symmetry and
allowing the integration of the equations of motion of test particles in the
Hamilton-Jacobi formalism by the method of separation of variables with
separation o... | [
{
"created": "Fri, 28 May 2021 22:14:59 GMT",
"version": "v1"
}
] | 2022-03-10 | [
[
"Osetrin",
"K. E.",
""
],
[
"Kirnos",
"I. V.",
""
],
[
"Osetrin",
"E. K.",
""
],
[
"Filippov",
"A. E.",
""
]
] | Exact solutions are obtained in the quadratic theory of gravity with a scalar field for wave-like models of space-time with spatial homogeneity symmetry and allowing the integration of the equations of motion of test particles in the Hamilton-Jacobi formalism by the method of separation of variables with separation of ... |
1205.1253 | Carlos F. Sopuerta | Priscilla Canizares (1,2), Jonathan R. Gair (1), Carlos F. Sopuerta
(2) ((1) IoA, Cambridge, (2) ICE, CSIC-IEEC) | Testing Chern-Simons Modified Gravity with Gravitational-Wave Detections
of Extreme-Mass-Ratio Binaries | RevTeX 4.1. 21 pages, 2 Figures, 7 Tables. Revision to match the
published version | Phys. Rev. D 86, 044010 (2012) [20 pages] | 10.1103/PhysRevD.86.044010 | null | gr-qc astro-ph.CO astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | [abridged] The detection of gravitational waves from extreme-mass-ratio
(EMRI) binaries, comprising a stellar-mass compact object orbiting around a
massive black hole, is one of the main targets for low-frequency
gravitational-wave detectors in space, like the Laser Interferometer Space
Antenna (LISA or eLISA/NGO). T... | [
{
"created": "Sun, 6 May 2012 23:21:58 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Aug 2012 21:03:22 GMT",
"version": "v2"
}
] | 2012-08-09 | [
[
"Canizares",
"Priscilla",
"",
"IoA, Cambridge",
"ICE, CSIC-IEEC"
],
[
"Gair",
"Jonathan R.",
"",
"IoA, Cambridge"
],
[
"Sopuerta",
"Carlos F.",
"",
"ICE, CSIC-IEEC"
]
] | [abridged] The detection of gravitational waves from extreme-mass-ratio (EMRI) binaries, comprising a stellar-mass compact object orbiting around a massive black hole, is one of the main targets for low-frequency gravitational-wave detectors in space, like the Laser Interferometer Space Antenna (LISA or eLISA/NGO). The... |
2208.10191 | Lorenzo Iorio | Lorenzo Iorio, Matteo Luca Ruggiero | Effect of some modified models of gravity on the radial velocity of
binary systems | LaTex2e, 19 pages, no tables, no figures. Version matching the one at
press in Universe | Universe 2022, 8(9), 443 | 10.3390/universe8090443 | null | gr-qc astro-ph.EP astro-ph.SR physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For many classes of astronomical and astrophysical binary systems, long
observational records of their radial velocity $V$, which is their directly
observable quantity, are available. For exoplanets close to their parent stars,
they cover several full orbital revolutions, while for wide binaries like,
e.g., the Proxi... | [
{
"created": "Mon, 22 Aug 2022 10:25:31 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Aug 2022 13:05:54 GMT",
"version": "v2"
}
] | 2022-08-26 | [
[
"Iorio",
"Lorenzo",
""
],
[
"Ruggiero",
"Matteo Luca",
""
]
] | For many classes of astronomical and astrophysical binary systems, long observational records of their radial velocity $V$, which is their directly observable quantity, are available. For exoplanets close to their parent stars, they cover several full orbital revolutions, while for wide binaries like, e.g., the Proxima... |
2205.07893 | Andrea Antonelli | Jonathan R. Gair, Andrea Antonelli and Riccardo Barbieri | A Fisher matrix for gravitational-wave population inference | 14 pages, 4 figures; the results can be reproduced using codes at
https://github.com/aantonelli94/PopFisher. v2: published version, new
sections and appendices added during the peer-review process | null | 10.1093/mnras/stac3560 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive a Fisher matrix for the parameters characterising a population of
gravitational-wave events. This provides a guide to the precision with which
population parameters can be estimated with multiple observations, which
becomes increasingly accurate as the number of events and the signal-to-noise
ratio of the s... | [
{
"created": "Mon, 16 May 2022 18:00:00 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Dec 2022 11:10:32 GMT",
"version": "v2"
}
] | 2022-12-14 | [
[
"Gair",
"Jonathan R.",
""
],
[
"Antonelli",
"Andrea",
""
],
[
"Barbieri",
"Riccardo",
""
]
] | We derive a Fisher matrix for the parameters characterising a population of gravitational-wave events. This provides a guide to the precision with which population parameters can be estimated with multiple observations, which becomes increasingly accurate as the number of events and the signal-to-noise ratio of the sam... |
1711.06732 | Anshul Saini | Anshul Saini, Dejan Stojkovic | Modified hoop conjecture in expanding spacetimes and primordial black
hole production in FRW universe | null | JCAP05(2018)071 | 10.1088/1475-7516/2018/05/071 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | According to a variant of the hoop conjecture, if we localize two particles
within the Schwarzschild radius corresponding to their center of mass energy,
then a black hole will form. Despite a large body of work on the formation of
primordial black holes, so far this conjecture has not been generalized to
expanding s... | [
{
"created": "Fri, 17 Nov 2017 21:36:58 GMT",
"version": "v1"
}
] | 2018-06-01 | [
[
"Saini",
"Anshul",
""
],
[
"Stojkovic",
"Dejan",
""
]
] | According to a variant of the hoop conjecture, if we localize two particles within the Schwarzschild radius corresponding to their center of mass energy, then a black hole will form. Despite a large body of work on the formation of primordial black holes, so far this conjecture has not been generalized to expanding spa... |
2109.14319 | Conghua Liu | Conghua Liu, Jin Wang | Path integral and instantons for the process and phase transition rate
of the RNAdS black hole | null | Phys. Rev. D 105. 104024(2022) | 10.1103/PhysRevD.105.104024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new approach to study the dynamical phase transition of RNAdS
black holes on the underlying free energy landscape. By formulating a path
integral framework, we can quantify the kinetic paths representing the history
from the initial state to the end state, which provides us a visualized yet
quantified pi... | [
{
"created": "Wed, 29 Sep 2021 10:14:29 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Sep 2021 02:15:50 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Jan 2022 13:07:30 GMT",
"version": "v3"
},
{
"created": "Thu, 20 Jan 2022 04:32:18 GMT",
"version": "v4"
},
{
"c... | 2022-07-06 | [
[
"Liu",
"Conghua",
""
],
[
"Wang",
"Jin",
""
]
] | We propose a new approach to study the dynamical phase transition of RNAdS black holes on the underlying free energy landscape. By formulating a path integral framework, we can quantify the kinetic paths representing the history from the initial state to the end state, which provides us a visualized yet quantified pict... |
gr-qc/0002015 | Luis J. Garay | L. J. Garay, J. R. Anglin, J. I. Cirac, and P. Zoller | Sonic analog of gravitational black holes in Bose-Einstein condensates | RevTeX 3.1, 1 figure, 4 pages | Phys.Rev.Lett.85:4643-4647,2000 | 10.1103/PhysRevLett.85.4643 | null | gr-qc cond-mat quant-ph | null | It is shown that, in dilute-gas Bose-Einstein condensates, there exist both
dynamically stable and unstable configurations which, in the hydrodynamic
limit, exhibit a behavior resembling that of gravitational black holes. The
dynamical instabilities involve creation of quasiparticle pairs in positive and
negative ene... | [
{
"created": "Thu, 3 Feb 2000 11:53:37 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Dec 2000 10:21:44 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Garay",
"L. J.",
""
],
[
"Anglin",
"J. R.",
""
],
[
"Cirac",
"J. I.",
""
],
[
"Zoller",
"P.",
""
]
] | It is shown that, in dilute-gas Bose-Einstein condensates, there exist both dynamically stable and unstable configurations which, in the hydrodynamic limit, exhibit a behavior resembling that of gravitational black holes. The dynamical instabilities involve creation of quasiparticle pairs in positive and negative energ... |
2404.17624 | Zhong-Wen Feng | Zhong-Wen Feng, Shi-Yu Li, Xia Zhou, Haximjan Abdusattar | Phase transitions, critical behavior and microstructure of the FRW
universe in the framework of higher order GUP | 12 pages, 8 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we explore the the phase transition, critical behavior and
microstructure of the FRW in the framework of a new higher order generalized
uncertainty principle. Our initial step involves deriving the equation of state
by defining the work density $W$ from GUP-corrected Friedmann equations as the
thermody... | [
{
"created": "Fri, 26 Apr 2024 14:47:39 GMT",
"version": "v1"
},
{
"created": "Fri, 3 May 2024 02:31:00 GMT",
"version": "v2"
}
] | 2024-05-06 | [
[
"Feng",
"Zhong-Wen",
""
],
[
"Li",
"Shi-Yu",
""
],
[
"Zhou",
"Xia",
""
],
[
"Abdusattar",
"Haximjan",
""
]
] | In this paper, we explore the the phase transition, critical behavior and microstructure of the FRW in the framework of a new higher order generalized uncertainty principle. Our initial step involves deriving the equation of state by defining the work density $W$ from GUP-corrected Friedmann equations as the thermodyna... |
2406.19355 | Jose Beltr\'an Jim\'enez | Antonio G. Bello-Morales, Jose Beltr\'an Jim\'enez, Alejandro
Jim\'enez Cano, Antonio L. Maroto and Tomi S. Koivisto | A class of ghost-free theories in symmetric teleparallel geometry | 11 pages, no figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Theories formulated in the arena of teleparallel geometries are generically
plagued by ghost-like instabilities or other pathologies that are ultimately
caused by the breaking of some symmetries. In this work, we construct a class
of ghost-free theories based on a symmetry under Transverse Diffeomorphisms
that is nat... | [
{
"created": "Thu, 27 Jun 2024 17:33:12 GMT",
"version": "v1"
}
] | 2024-06-28 | [
[
"Bello-Morales",
"Antonio G.",
""
],
[
"Jiménez",
"Jose Beltrán",
""
],
[
"Cano",
"Alejandro Jiménez",
""
],
[
"Maroto",
"Antonio L.",
""
],
[
"Koivisto",
"Tomi S.",
""
]
] | Theories formulated in the arena of teleparallel geometries are generically plagued by ghost-like instabilities or other pathologies that are ultimately caused by the breaking of some symmetries. In this work, we construct a class of ghost-free theories based on a symmetry under Transverse Diffeomorphisms that is natur... |
gr-qc/9408001 | Alan Rendall | Alan D. Rendall | On the Nature of Singularities in Plane Symmetric Scalar Field
Cosmologies | 7 pages, MPA-AR-94-3 | Gen.Rel.Grav.27:213-221,1995 | 10.1007/BF02107959 | null | gr-qc | null | The nature of the initial singularity in spatially compact plane symmetric
scalar field cosmologies is investigated. It is shown that this singularity is
crushing and velocity dominated and that the Kretschmann scalar diverges
uniformly as it is approached. The last fact means in particular that a maximal
globally hy... | [
{
"created": "Mon, 1 Aug 1994 16:30:46 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Rendall",
"Alan D.",
""
]
] | The nature of the initial singularity in spatially compact plane symmetric scalar field cosmologies is investigated. It is shown that this singularity is crushing and velocity dominated and that the Kretschmann scalar diverges uniformly as it is approached. The last fact means in particular that a maximal globally hype... |
0907.1487 | Elizabeth Winstanley | Dominic Hosler and Elizabeth Winstanley | Higher-dimensional solitons and black holes with a non-minimally coupled
scalar field | 17 pages, revtex4, 21 figures, minor changes to match published
version | Phys.Rev.D80:104010,2009 | 10.1103/PhysRevD.80.104010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study higher-dimensional soliton and hairy black hole solutions of the
Einstein equations non-minimally coupled to a scalar field. The scalar field
has no self-interaction potential but a cosmological constant is included.
Non-trivial solutions exist only when the cosmological constant is negative and
the constant... | [
{
"created": "Thu, 9 Jul 2009 10:16:37 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Jun 2012 18:25:28 GMT",
"version": "v2"
}
] | 2012-06-12 | [
[
"Hosler",
"Dominic",
""
],
[
"Winstanley",
"Elizabeth",
""
]
] | We study higher-dimensional soliton and hairy black hole solutions of the Einstein equations non-minimally coupled to a scalar field. The scalar field has no self-interaction potential but a cosmological constant is included. Non-trivial solutions exist only when the cosmological constant is negative and the constant g... |
gr-qc/0412076 | Paola Zizzi | Paola Zizzi | Computability at the Planck scale | 9 pages, misprints corrected, LaTeX version, accepted as contributed
paper at CiE 2005 | null | null | null | gr-qc quant-ph | null | We consider the issue of computability at the most fundamental level of
physical reality: the Planck scale. To this aim, we consider the theoretical
model of a quantum computer on a non commutative space background, which is a
computational model for quantum gravity. In this domain, all computable
functions are the l... | [
{
"created": "Wed, 15 Dec 2004 19:36:39 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Mar 2005 07:15:14 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Zizzi",
"Paola",
""
]
] | We consider the issue of computability at the most fundamental level of physical reality: the Planck scale. To this aim, we consider the theoretical model of a quantum computer on a non commutative space background, which is a computational model for quantum gravity. In this domain, all computable functions are the law... |
1606.00489 | Dheeraj Kumar Mishra | Dheeraj Kumar Mishra, Nitin Chandra, Vinay Vaibhav | Equilibrium properties of blackbody radiation with an ultraviolet energy
cut-off | 26 pages, 9 figures; Published version; Some new calculations added | Annals of Physics 385 605(2017) | 10.1016/j.aop.2017.08.004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study various equilibrium thermodynamic properties of blackbody radiation
(i.e. a photon gas) with an ultraviolet energy cut-off. We find that the energy
density, specific heat etc. follow usual acoustic phonon dynamics as have been
well studied by Debye. Other thermodynamic quantities like pressure, entropy
etc. ... | [
{
"created": "Wed, 1 Jun 2016 22:29:14 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Jun 2016 19:25:37 GMT",
"version": "v2"
},
{
"created": "Wed, 13 Sep 2017 02:08:14 GMT",
"version": "v3"
}
] | 2017-09-14 | [
[
"Mishra",
"Dheeraj Kumar",
""
],
[
"Chandra",
"Nitin",
""
],
[
"Vaibhav",
"Vinay",
""
]
] | We study various equilibrium thermodynamic properties of blackbody radiation (i.e. a photon gas) with an ultraviolet energy cut-off. We find that the energy density, specific heat etc. follow usual acoustic phonon dynamics as have been well studied by Debye. Other thermodynamic quantities like pressure, entropy etc. ha... |
2310.10864 | Cendikiawan Suryaatmadja | Cendikiawan Suryaatmadja, Cemile Senem Arabaci, Matthew P. G. Robbins,
Joshua Foo, Magdalena Zych, Robert B. Mann | Signatures of Rotating Black Holes in Quantum Superposition | null | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new approach for operationally studying the effects of spacetime in quantum
superpositions of semiclassical states has recently been proposed by some of
the authors. This approach was applied to the case of a (2+1)-dimensional
Ba\~nados-Teitelboim-Zanelli (BTZ) black hole in a superposition of masses,
where it was ... | [
{
"created": "Mon, 16 Oct 2023 22:24:21 GMT",
"version": "v1"
}
] | 2023-10-18 | [
[
"Suryaatmadja",
"Cendikiawan",
""
],
[
"Arabaci",
"Cemile Senem",
""
],
[
"Robbins",
"Matthew P. G.",
""
],
[
"Foo",
"Joshua",
""
],
[
"Zych",
"Magdalena",
""
],
[
"Mann",
"Robert B.",
""
]
] | A new approach for operationally studying the effects of spacetime in quantum superpositions of semiclassical states has recently been proposed by some of the authors. This approach was applied to the case of a (2+1)-dimensional Ba\~nados-Teitelboim-Zanelli (BTZ) black hole in a superposition of masses, where it was sh... |
0803.0604 | Masakatsu Kenmoku | Maiko Kuwata, Masakatsu Kenmoku and Kazuyasu Shigemoto | Eigenvalue Problem of Scalar Fields in BTZ Black Hole Spacetime | 10 pages, 6 figures | Prog.Theor.Phys.119:939-948,2008 | 10.1143/PTP.119.939 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We studied the eigenvalue problem of scalar fields in the (2+1)-dimensional
BTZ black hole spacetime. The Dirichlet boundary condition at infinity and the
Dirichlet or the Neumann boundary condition at the horizon are imposed.
Eigenvalues for normal modes are characterized by the principal quantum number
$(0<n)$ and ... | [
{
"created": "Wed, 5 Mar 2008 08:05:54 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kuwata",
"Maiko",
""
],
[
"Kenmoku",
"Masakatsu",
""
],
[
"Shigemoto",
"Kazuyasu",
""
]
] | We studied the eigenvalue problem of scalar fields in the (2+1)-dimensional BTZ black hole spacetime. The Dirichlet boundary condition at infinity and the Dirichlet or the Neumann boundary condition at the horizon are imposed. Eigenvalues for normal modes are characterized by the principal quantum number $(0<n)$ and th... |
gr-qc/0201063 | Alessandra Buonanno | Alessandra Buonanno and Yanbei Chen | Laser-interferometer gravitational-wave optical-spring detectors | 7 pages, 3 figures; to appear in the Proceedings of 4th Edoardo
Amaldi Conference on Gravitational Waves, Perth, Australia, 8-13 July 2001 | Class.Quant.Grav. 19 (2002) 1569-1574 | 10.1088/0264-9381/19/7/346 | null | gr-qc | null | Using a quantum mechanical approach, we show that in a gravitational-wave
interferometer composed of arm cavities and a signal recycling cavity, e.g.,
the LIGO-II configuration, the radiation-pressure force acting on the mirrors
not only disturbs the motion of the free masses randomly due to quantum
fluctuations, but... | [
{
"created": "Fri, 18 Jan 2002 17:49:49 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Apr 2002 20:24:47 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Buonanno",
"Alessandra",
""
],
[
"Chen",
"Yanbei",
""
]
] | Using a quantum mechanical approach, we show that in a gravitational-wave interferometer composed of arm cavities and a signal recycling cavity, e.g., the LIGO-II configuration, the radiation-pressure force acting on the mirrors not only disturbs the motion of the free masses randomly due to quantum fluctuations, but a... |
gr-qc/0001061 | Franz Schunck | Eckehard W. Mielke and Franz E. Schunck | Boson Stars: Alternatives to primordial black holes? | 14 pages, uses REVTeX, 1 postscript figure | Nucl.Phys. B564 (2000) 185-203 | 10.1016/S0550-3213(99)00492-7 | null | gr-qc astro-ph | null | The present surge for the astrophysical relevance of boson stars stems from
the speculative possibility that these compact objects could provide a
considerable fraction of the non-baryonic part of dark matter within the halo
of galaxies. For a very light `universal' axion of effective string models,
their total gravi... | [
{
"created": "Thu, 20 Jan 2000 23:19:32 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Mielke",
"Eckehard W.",
""
],
[
"Schunck",
"Franz E.",
""
]
] | The present surge for the astrophysical relevance of boson stars stems from the speculative possibility that these compact objects could provide a considerable fraction of the non-baryonic part of dark matter within the halo of galaxies. For a very light `universal' axion of effective string models, their total gravita... |
1303.0762 | Emanuele Alesci | Emanuele Alesci | A new perspective on early cosmology | 3 pages, contribution to the Proceedings of the 13th Marcel Grossman
Meeting (Stockholm, Sweden, July 1-7 2012) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new perspective on early cosmology based on Loop Quantum
Gravity. We use projected spinnetworks, coherent states and spinfoam
techniques, to implement a quantum reduction of the full Kinematical Hilbert
space of LQG, suitable to describe inhomogeneous cosmological models. Some
preliminary results on the ... | [
{
"created": "Mon, 4 Mar 2013 17:41:50 GMT",
"version": "v1"
}
] | 2013-03-05 | [
[
"Alesci",
"Emanuele",
""
]
] | We present a new perspective on early cosmology based on Loop Quantum Gravity. We use projected spinnetworks, coherent states and spinfoam techniques, to implement a quantum reduction of the full Kinematical Hilbert space of LQG, suitable to describe inhomogeneous cosmological models. Some preliminary results on the so... |
1008.4835 | Md. Rahman Atiqur | Md. Atiqur Rahman | Longitudinal Wave Propagation in Relativistic Two-fluid Plasmas around
Reissner-Nordstrom Black Hole | 16 pages, 8 figures | Int.J.Theor.Phys.50:698-718,2011 | 10.1007/s10773-010-0600-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The 3+1 spacetime formulation of general relativity is used to investigate
the transverse waves propagating in a plasma influenced by the gravitational
field of Reissner-Nordstrom black hole, as explained in an earlier paper, to
take account of relativistic effects due to the event horizon. Here, a local
approximatio... | [
{
"created": "Sat, 28 Aug 2010 05:42:11 GMT",
"version": "v1"
},
{
"created": "Sun, 28 Nov 2010 04:28:53 GMT",
"version": "v2"
}
] | 2011-01-25 | [
[
"Rahman",
"Md. Atiqur",
""
]
] | The 3+1 spacetime formulation of general relativity is used to investigate the transverse waves propagating in a plasma influenced by the gravitational field of Reissner-Nordstrom black hole, as explained in an earlier paper, to take account of relativistic effects due to the event horizon. Here, a local approximation ... |
gr-qc/0603100 | Prasanta Mahato | Prasanta Mahato | de Sitter group and Einstein-Hilbert Lagrangian | 14 pages | Phys.Rev.D70:124024,2004 | 10.1103/PhysRevD.70.124024 | null | gr-qc | null | Axial vector torsion in the Einstein-Cartan space $U_{4}$ is considered here.
By picking a particular term from the SO(4,1) Pontryagin density and then
modifying it in a SO(3,1) invariant way, we get a Lagrangian density with
Lagrange multipliers. Then considering torsion and torsion-less connection as
independent fi... | [
{
"created": "Sat, 25 Mar 2006 16:58:29 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Mar 2006 16:17:00 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Mahato",
"Prasanta",
""
]
] | Axial vector torsion in the Einstein-Cartan space $U_{4}$ is considered here. By picking a particular term from the SO(4,1) Pontryagin density and then modifying it in a SO(3,1) invariant way, we get a Lagrangian density with Lagrange multipliers. Then considering torsion and torsion-less connection as independent fiel... |
gr-qc/0106004 | Giovanni Amelino-Camelia | Giovanni Amelino-Camelia | Status of Relativity with observer-independent length and velocity
scales | 24 pages, Latex (to appear in proceedings of 37th Karpacz Winter
School) | AIP Conf. Proc.589:137-150,2001 | 10.1063/1.1419321 | null | gr-qc | null | I have recently shown that it is possible to formulate the Relativity
postulates in a way that does not lead to inconsistencies in the case of
space-times whose structure is governed by observer-independent scales of both
velocity and length. Here I give an update on the status of this proposal,
including a brief rev... | [
{
"created": "Sun, 3 Jun 2001 13:08:06 GMT",
"version": "v1"
}
] | 2011-09-01 | [
[
"Amelino-Camelia",
"Giovanni",
""
]
] | I have recently shown that it is possible to formulate the Relativity postulates in a way that does not lead to inconsistencies in the case of space-times whose structure is governed by observer-independent scales of both velocity and length. Here I give an update on the status of this proposal, including a brief revie... |
2212.06175 | Jaime Redondo-Yuste | Jaime Redondo-Yuste and Luis Lehner | Non-linear black hole dynamics and Carrollian fluids | 27 pages, 11 figures | null | 10.1007/JHEP02(2023)240 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dynamics of black hole horizons has recently been linked to that of
Carrollian fluids. This results in a dictionary between geometrical quantities
and those of a fluid with unusual properties due its underlying Carrollian
symmetries. In this work we explore this relation in dynamical settings with
the interest of... | [
{
"created": "Mon, 12 Dec 2022 19:00:05 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Jan 2023 17:02:44 GMT",
"version": "v2"
},
{
"created": "Wed, 8 Feb 2023 17:41:23 GMT",
"version": "v3"
}
] | 2023-03-22 | [
[
"Redondo-Yuste",
"Jaime",
""
],
[
"Lehner",
"Luis",
""
]
] | The dynamics of black hole horizons has recently been linked to that of Carrollian fluids. This results in a dictionary between geometrical quantities and those of a fluid with unusual properties due its underlying Carrollian symmetries. In this work we explore this relation in dynamical settings with the interest of s... |
1711.05034 | Shaoqi Hou | Shaoqi Hou and Yungui Gong | Constraints on Horndeski Theory Using the Observations of Nordtvedt
Effect, Shapiro Time Delay and Binary Pulsars | 17 pages, 1 figure. Correct typos, add new references. Match the
published version | Eur. Phys. J. C 78, 247 (2018) | 10.1140/epjc/s10052-018-5738-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Alternative theories of gravity not only modify the polarization contents of
the gravitational wave, but also affect the motions of the stars and the energy
radiated away via the gravitational radiation. These aspects leave imprints in
the observational data, which enables the test of General Relativity and its
alter... | [
{
"created": "Tue, 14 Nov 2017 09:59:27 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Nov 2017 02:59:04 GMT",
"version": "v2"
},
{
"created": "Thu, 22 Mar 2018 12:02:08 GMT",
"version": "v3"
}
] | 2018-03-28 | [
[
"Hou",
"Shaoqi",
""
],
[
"Gong",
"Yungui",
""
]
] | Alternative theories of gravity not only modify the polarization contents of the gravitational wave, but also affect the motions of the stars and the energy radiated away via the gravitational radiation. These aspects leave imprints in the observational data, which enables the test of General Relativity and its alterna... |
gr-qc/0205116 | Alexander Zhuk | A. Zhuk | Generalized de Sitter solution in multidimensional cosmology with static
internal spaces | LaTeX2e, 8 pages | Astron.Nachr.316:269-274,1995 | 10.1002/asna.2103160502 | null | gr-qc | null | A multidimensional cosmological model with space-time consisting of n (n>1)
Einstein spaces M_i is investigated in the presence of a cosmological constant
Lambda and a homogeneous minimally coupled free scalar field. Generalized de
Sitter solution was found for Lambda > 0 and Ricci-flat external space for the
case of... | [
{
"created": "Tue, 28 May 2002 14:12:51 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Zhuk",
"A.",
""
]
] | A multidimensional cosmological model with space-time consisting of n (n>1) Einstein spaces M_i is investigated in the presence of a cosmological constant Lambda and a homogeneous minimally coupled free scalar field. Generalized de Sitter solution was found for Lambda > 0 and Ricci-flat external space for the case of s... |
0801.0527 | Elizabeth Winstanley | Elizabeth Winstanley | Classical Yang-Mills black hole hair in anti-de Sitter space | 41 pages, 14 figures. Based on the lecture given at the 4th Aegean
Summer School | Lect.Notes Phys.769:49-87,2009 | 10.1007/978-3-540-88460-6_2 | null | gr-qc hep-th | null | The properties of hairy black holes in Einstein-Yang-Mills (EYM) theory are
reviewed, focusing on spherically symmetric solutions. In particular, in
asymptotically anti-de Sitter space (adS) stable black hole hair is known to
exist for su(2) EYM. We review recent work in which it is shown that stable
hair also exists... | [
{
"created": "Thu, 3 Jan 2008 16:53:26 GMT",
"version": "v1"
}
] | 2009-01-28 | [
[
"Winstanley",
"Elizabeth",
""
]
] | The properties of hairy black holes in Einstein-Yang-Mills (EYM) theory are reviewed, focusing on spherically symmetric solutions. In particular, in asymptotically anti-de Sitter space (adS) stable black hole hair is known to exist for su(2) EYM. We review recent work in which it is shown that stable hair also exists i... |
0805.3627 | Branislav Cvetkovi\'c | M. Blagojevi\'c and B. Cvetkovi\'c | Self-dual Maxwell field in 3D gravity with torsion | LATEX, 15 pages, v2: minor corrections | Phys.Rev.D78:044037,2008 | 10.1103/PhysRevD.78.044037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the system of self-dual Maxwell field coupled to 3D gravity with
torsion, with Maxwell field modified by a topological mass term. General
structure of the field equations reveals a new, dynamical role of the classical
central charges, and gives a simple correspondence between self-dual solutions
with torsion... | [
{
"created": "Fri, 23 May 2008 12:42:17 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Sep 2008 09:53:26 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Blagojević",
"M.",
""
],
[
"Cvetković",
"B.",
""
]
] | We study the system of self-dual Maxwell field coupled to 3D gravity with torsion, with Maxwell field modified by a topological mass term. General structure of the field equations reveals a new, dynamical role of the classical central charges, and gives a simple correspondence between self-dual solutions with torsion a... |
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