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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1707.07774 | Geoffrey Lovelace | Geoffrey Lovelace, Nicholas Demos and Haroon Khan | Numerically modeling Brownian thermal noise in amorphous and crystalline
thin coatings | 23 pages, 6 figures, submitted to Classical and Quantum Gravity | null | 10.1088/1361-6382/aa9ccc | LIGO-P1700183 | gr-qc physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Thermal noise is expected to be one of the noise sources limiting the
astrophysical reach of Advanced LIGO (once commissioning is complete) and
third-generation detectors. Adopting crystalline materials for thin, reflecting
mirror coatings, rather than the amorphous coatings used in current-generation
detectors, coul... | [
{
"created": "Mon, 24 Jul 2017 23:52:43 GMT",
"version": "v1"
}
] | 2018-01-10 | [
[
"Lovelace",
"Geoffrey",
""
],
[
"Demos",
"Nicholas",
""
],
[
"Khan",
"Haroon",
""
]
] | Thermal noise is expected to be one of the noise sources limiting the astrophysical reach of Advanced LIGO (once commissioning is complete) and third-generation detectors. Adopting crystalline materials for thin, reflecting mirror coatings, rather than the amorphous coatings used in current-generation detectors, could ... |
1301.2120 | Antonio Jes\'us L\'opez Revelles | Antonio Jes\'us L\'opez-Revelles | Growth of matter perturbations for realistic $F(R)$ models | 24 pages, 14 figures, submitted to PRD | null | 10.1103/PhysRevD.87.024021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Two different realistic $F(R)$ modified gravity models are considered in the
framework of the Friedmann-Lemetre-Robertson-Walker universe. The parameters of
these two models are adjusted to reach coherence with the most recent and
accurate observations of the current universe. A study of the growth of matter
density ... | [
{
"created": "Thu, 10 Jan 2013 13:46:58 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"López-Revelles",
"Antonio Jesús",
""
]
] | Two different realistic $F(R)$ modified gravity models are considered in the framework of the Friedmann-Lemetre-Robertson-Walker universe. The parameters of these two models are adjusted to reach coherence with the most recent and accurate observations of the current universe. A study of the growth of matter density pe... |
1210.5542 | Owen Pavel Fern\'andez Piedra | Owen Pavel Fern\'andez Piedra, J. Bernal Castillo, Y. Jim\'enez
Santana and L. Figueredo Noris | Fermion perturbations in string-theory black holes II: the higher
dimensional case | 32 pages, 8 figures | null | null | GEA-UCF 2012-2 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we report the results of a detailed investigation of the
complete time evolution of massless fermion fields propagating in spacetimes of
higher dimensional stringy black hole solutions, obtained from intersecting
branes in string/$M$ theory. We write the Dirac equation in $D$-dimensional
spacetime in a ... | [
{
"created": "Fri, 19 Oct 2012 21:28:01 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Nov 2012 19:20:34 GMT",
"version": "v2"
}
] | 2012-11-16 | [
[
"Piedra",
"Owen Pavel Fernández",
""
],
[
"Castillo",
"J. Bernal",
""
],
[
"Santana",
"Y. Jiménez",
""
],
[
"Noris",
"L. Figueredo",
""
]
] | In this paper we report the results of a detailed investigation of the complete time evolution of massless fermion fields propagating in spacetimes of higher dimensional stringy black hole solutions, obtained from intersecting branes in string/$M$ theory. We write the Dirac equation in $D$-dimensional spacetime in a fo... |
2303.12168 | Sunil Kumar Tripathy Dr. | S. K. Tripathy, S. K. Pradhan, B. Barik, Z. Naik and B. Mishra | Evolution of Generalized Brans-Dicke parameter within a Superbounce
scenario | 10 pages, 5 figures, accepted version of the journal Symmetry | Symmetry 2023, 15(4), 790 | 10.3390/sym15040790 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We have studied a superbounce scenario in a set up of Brans-Dicke (BD)
theory. The BD parameter is considered to be time dependent and is assumed to
evolve with the Brans-Dicke scalar field. In the superbounce scenario, the
model bounces at an epoch corresponding to a Big Crunch provided the ekpyrotic
phase continues... | [
{
"created": "Mon, 20 Mar 2023 16:17:14 GMT",
"version": "v1"
}
] | 2023-03-28 | [
[
"Tripathy",
"S. K.",
""
],
[
"Pradhan",
"S. K.",
""
],
[
"Barik",
"B.",
""
],
[
"Naik",
"Z.",
""
],
[
"Mishra",
"B.",
""
]
] | We have studied a superbounce scenario in a set up of Brans-Dicke (BD) theory. The BD parameter is considered to be time dependent and is assumed to evolve with the Brans-Dicke scalar field. In the superbounce scenario, the model bounces at an epoch corresponding to a Big Crunch provided the ekpyrotic phase continues u... |
1801.02490 | Gregory Horndeski | Gregory W. Horndeski | Conformally Invariant Scalar-Vector-Tensor Field Theories Consistent
with Conservation of Charge in a Four-Dimensional Space | 40 pages. arXiv admin note: substantial text overlap with
arXiv:1708.09293 In this revised edition, I have added some additional
important references, and corrected some glaring typos | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a four-dimensional space I shall construct all of the conformally
invariant, scalar-vector-tensor field theories that are consistent with
conservation of charge, and flat space compatible. By the last assumption I
mean that the Lagrangian of the theory in question is well defined and
differentiable when evaluated ... | [
{
"created": "Fri, 5 Jan 2018 04:03:05 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Jan 2018 15:29:25 GMT",
"version": "v2"
}
] | 2018-01-29 | [
[
"Horndeski",
"Gregory W.",
""
]
] | In a four-dimensional space I shall construct all of the conformally invariant, scalar-vector-tensor field theories that are consistent with conservation of charge, and flat space compatible. By the last assumption I mean that the Lagrangian of the theory in question is well defined and differentiable when evaluated fo... |
gr-qc/9801110 | Kimberly C. B. New | Kimberly C. B. New (1), Keith Watt (2), Charles W. Misner (2), Joan M.
Centrella (1) ((1) Drexel University, (2) University of Maryland) | Stable 3-level leapfrog integration in numerical relativity | 14 pages and 10 postscript figures; different Hamiltonian constraint
normalization used, minor alterations to cost analysis and Conclusions
section; accepted for publication in Physical Review D | Phys.Rev. D58 (1998) 064022 | 10.1103/PhysRevD.58.064022 | null | gr-qc astro-ph | null | The 3-level leapfrog time integration algorithm is an attractive choice for
numerical relativity simulations since it is time-symmetric and avoids
non-physical damping. In Newtonian problems without velocity dependent forces,
this method enjoys the advantage of long term stability. However, for more
general different... | [
{
"created": "Fri, 30 Jan 1998 21:52:19 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Jun 1998 16:10:30 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"New",
"Kimberly C. B.",
"",
"Drexel University"
],
[
"Watt",
"Keith",
"",
"University of Maryland"
],
[
"Misner",
"Charles W.",
"",
"University of Maryland"
],
[
"Centrella",
"Joan M.",
"",
"Drexel University"
]
] | The 3-level leapfrog time integration algorithm is an attractive choice for numerical relativity simulations since it is time-symmetric and avoids non-physical damping. In Newtonian problems without velocity dependent forces, this method enjoys the advantage of long term stability. However, for more general differentia... |
1605.09506 | Chen Songbai | Mingzhi Wang, Songbai Chen, Jiliang Jing | Chaos in the motion of a test scalar particle coupling to Einstein
tensor in Schwarzschild-Melvin black hole spacetime | 18 pages, 9 figures. The title is changed, some content and
references are modified. Accepted by EPJC for publication;arXiv admin note:
text overlap with arXiv:1604.02785 | Eur. Phys. J. C (2017) 77:208 | 10.1140/epjc/s10052-017-4792-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present firstly the equation of motion for a test scalar particle coupling
to Einstein tensor in the Schwarzschild-Melvin black hole spacetime through the
short-wave approximation. Through analysing Poincar\'{e} sections, the power
spectrum, the fast Lyapunov exponent indicator and the bifurcation diagram, we
inve... | [
{
"created": "Tue, 31 May 2016 07:04:59 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Mar 2017 15:16:39 GMT",
"version": "v2"
},
{
"created": "Sat, 8 Apr 2017 16:16:21 GMT",
"version": "v3"
}
] | 2017-04-11 | [
[
"Wang",
"Mingzhi",
""
],
[
"Chen",
"Songbai",
""
],
[
"Jing",
"Jiliang",
""
]
] | We present firstly the equation of motion for a test scalar particle coupling to Einstein tensor in the Schwarzschild-Melvin black hole spacetime through the short-wave approximation. Through analysing Poincar\'{e} sections, the power spectrum, the fast Lyapunov exponent indicator and the bifurcation diagram, we invest... |
1603.09683 | Chandrachur Chakraborty | Chandrachur Chakraborty, Parthapratim Pradhan | Behavior of a test gyroscope moving towards a rotating traversable
wormhole | LaTex, 18 pages including 7 figures, extensively revised version, one
new section added, accepted for publication in JCAP | JCAP03(2017)035 | 10.1088/1475-7516/2017/03/035 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The geodesic structure of the Teo wormhole is briefly discussed and some
observables are derived that promise to be of use in detecting a rotating
traversable wormhole indirectly, if it does exist. We also deduce the exact
Lense-Thirring (LT) precession frequency of a test gyroscope moving toward a
rotating traversab... | [
{
"created": "Thu, 31 Mar 2016 17:08:32 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Feb 2017 05:14:27 GMT",
"version": "v2"
}
] | 2017-03-17 | [
[
"Chakraborty",
"Chandrachur",
""
],
[
"Pradhan",
"Parthapratim",
""
]
] | The geodesic structure of the Teo wormhole is briefly discussed and some observables are derived that promise to be of use in detecting a rotating traversable wormhole indirectly, if it does exist. We also deduce the exact Lense-Thirring (LT) precession frequency of a test gyroscope moving toward a rotating traversable... |
gr-qc/0601080 | Maria J. Pareja | M. J. Pareja and J. Frauendiener | Constant scalar curvature hypersurfaces in extended Schwarzschild
space-time | 15 pages, 7 figures, uses amsart | Phys.Rev. D74 (2006) 044026 | 10.1103/PhysRevD.74.044026 | null | gr-qc | null | We present a class of spherically symmetric hypersurfaces in the
Kruskal extension of the Schwarzschild space-time. The hypersurfaces have
constant negative scalar curvature, so they are hyperboloidal in the regions of
space-time which are asymptotically flat.
| [
{
"created": "Thu, 19 Jan 2006 20:56:35 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Apr 2006 16:43:22 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Pareja",
"M. J.",
""
],
[
"Frauendiener",
"J.",
""
]
] | We present a class of spherically symmetric hypersurfaces in the Kruskal extension of the Schwarzschild space-time. The hypersurfaces have constant negative scalar curvature, so they are hyperboloidal in the regions of space-time which are asymptotically flat. |
gr-qc/0407065 | Vladimir Trishin | Vladimir V. Kassandrov, Vladimir N. Trishin | Gauge fields and particle-like formations associated with shear-free
null congruences | 4 pages, to appear in Proceedings of the Tenth Marcel Grossmann
Meeting on General Relativity, 2003 | null | 10.1142/9789812704030_0239 | null | gr-qc | null | We consider Maxwell fields associated with any shear-free null geodesic
congruence on Minkowski or Riemannian background space-time. Bounded singular
loci of these fields are treated as particle-like formations, possess
"self-quantized" electric charge and undergo self-consistent time dynamics.
Complicated singular s... | [
{
"created": "Fri, 16 Jul 2004 16:50:42 GMT",
"version": "v1"
}
] | 2016-11-09 | [
[
"Kassandrov",
"Vladimir V.",
""
],
[
"Trishin",
"Vladimir N.",
""
]
] | We consider Maxwell fields associated with any shear-free null geodesic congruence on Minkowski or Riemannian background space-time. Bounded singular loci of these fields are treated as particle-like formations, possess "self-quantized" electric charge and undergo self-consistent time dynamics. Complicated singular sol... |
2006.13757 | Peng Zhao | David Hilditch, Juan A. Valiente Kroon, Peng Zhao | Improved existence for the characteristic initial value problem with the
conformal Einstein field equations | 44 pages, 3 figures. arXiv admin note: text overlap with
arXiv:1911.00047 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We adapt Luk's analysis of the characteristic initial value problem in
General Relativity to the asymptotic characteristic problem for the conformal
Einstein field equations to demonstrate the local existence of solutions in a
neighbourhood of the set on which the data are given. In particular, we obtain
existence of... | [
{
"created": "Tue, 23 Jun 2020 14:37:08 GMT",
"version": "v1"
}
] | 2020-06-25 | [
[
"Hilditch",
"David",
""
],
[
"Kroon",
"Juan A. Valiente",
""
],
[
"Zhao",
"Peng",
""
]
] | We adapt Luk's analysis of the characteristic initial value problem in General Relativity to the asymptotic characteristic problem for the conformal Einstein field equations to demonstrate the local existence of solutions in a neighbourhood of the set on which the data are given. In particular, we obtain existence of s... |
gr-qc/0701149 | Deborah A. Konkowski | T. M. Helliwell and D. A. Konkowski | Quantum healing of classical singularities in power-law spacetimes | 14 pages, 1 figure; extensive revisions | Class.Quant.Grav.24:3377-3390,2007 | 10.1088/0264-9381/24/13/014 | null | gr-qc | null | We study a broad class of spacetimes whose metric coefficients reduce to
powers of a radius r in the limit of small r. Among these four-parameter
"power-law" metrics we identify those parameters for which the spacetimes have
classical singularities as r approaches 0. We show that a large set of such
classically singu... | [
{
"created": "Sat, 27 Jan 2007 18:35:24 GMT",
"version": "v1"
},
{
"created": "Wed, 9 May 2007 19:29:29 GMT",
"version": "v2"
},
{
"created": "Wed, 9 May 2007 22:29:28 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Helliwell",
"T. M.",
""
],
[
"Konkowski",
"D. A.",
""
]
] | We study a broad class of spacetimes whose metric coefficients reduce to powers of a radius r in the limit of small r. Among these four-parameter "power-law" metrics we identify those parameters for which the spacetimes have classical singularities as r approaches 0. We show that a large set of such classically singula... |
0904.3976 | Leonardo Fernandez-Jambrina | L. Fern\'andez-Jambrina, L.M. Gonz\'alez-Romero | On non-singular inhomogeneous cosmological models | 6 pp. Proceedings of ERE'04; Published in Beyond General Relativity.
Proceedings of the 2004 Spanish Relativity Meeting (ERE2004). Eds: N.
Alonso-Alberca, E. Alvarez, T. Ortin, (ed.), M.A. Vazquez-Mozo. Universidad
Autonoma de Madrid, Madrid, 2007 | Published in Beyond General Relativity. Proceedings of the 2004
Spanish Relativity Meeting (ERE2004). Eds: N. Alonso-Alberca, E. Alvarez, T.
Ortin, (ed.), M.A. Vazquez-Mozo. Universidad Autonoma de Madrid, Madrid,
129-134, 2007 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this talk we would like to review recent results on non-singular
cosmological models. It has been recently shown that among stiff perfect fluid
inhomogeneous spacetimes the absence of singularities is more common than it
was expected in the literature. We would like to generalize these results and
apply them to ot... | [
{
"created": "Sat, 25 Apr 2009 10:55:00 GMT",
"version": "v1"
}
] | 2009-04-29 | [
[
"Fernández-Jambrina",
"L.",
""
],
[
"González-Romero",
"L. M.",
""
]
] | In this talk we would like to review recent results on non-singular cosmological models. It has been recently shown that among stiff perfect fluid inhomogeneous spacetimes the absence of singularities is more common than it was expected in the literature. We would like to generalize these results and apply them to othe... |
0710.5167 | Pablo Laguna | Ian Hinder, Birjoo Vaishnav, Frank Herrmann, Deirdre Shoemaker, Pablo
Laguna | Circularization and Final Spin in Eccentric Binary Black Hole Inspirals | 4 pages, 4 figures, 2 tables. Final version in PRD | Phys.Rev.D77:081502,2008 | 10.1103/PhysRevD.77.081502 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present results from numerical relativity simulations of equal mass,
non-spinning binary black hole inspirals and mergers with initial
eccentricities e <= 0.8 and coordinate separations D >= 12 M of up to 9 orbits
(18 gravitational wave cycles). We extract the mass M_f and spin a_f of the
final black hole and find... | [
{
"created": "Fri, 26 Oct 2007 19:42:29 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jul 2008 18:46:39 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Hinder",
"Ian",
""
],
[
"Vaishnav",
"Birjoo",
""
],
[
"Herrmann",
"Frank",
""
],
[
"Shoemaker",
"Deirdre",
""
],
[
"Laguna",
"Pablo",
""
]
] | We present results from numerical relativity simulations of equal mass, non-spinning binary black hole inspirals and mergers with initial eccentricities e <= 0.8 and coordinate separations D >= 12 M of up to 9 orbits (18 gravitational wave cycles). We extract the mass M_f and spin a_f of the final black hole and find, ... |
0711.2754 | Carlos Augusto Romero Filho | F. Dahia, G. A. T. Gomez, C. Romero | On the embedding of spacetime in five-dimensional Weyl spaces | 16 pages, new title and references added | null | 10.1063/1.3000049 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit Weyl geometry in the context of recent higher-dimensional theories
of spacetime. After introducing the Weyl theory in a modern geometrical
language we present some results that represent extensions of Riemannian
theorems. We consider the theory of local embeddings and submanifolds in the
context of Weyl ge... | [
{
"created": "Sat, 17 Nov 2007 17:22:39 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Sep 2008 13:30:03 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Dahia",
"F.",
""
],
[
"Gomez",
"G. A. T.",
""
],
[
"Romero",
"C.",
""
]
] | We revisit Weyl geometry in the context of recent higher-dimensional theories of spacetime. After introducing the Weyl theory in a modern geometrical language we present some results that represent extensions of Riemannian theorems. We consider the theory of local embeddings and submanifolds in the context of Weyl geom... |
1704.05471 | Robert Penna | Robert F. Penna, Scott A. Hughes, Stephen O'Sullivan | Strong-field tidal distortions of rotating black holes: III. Embeddings
in hyperbolic 3-space | 10 pages, 6 figures | null | 10.1103/PhysRevD.96.064030 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In previous work, we developed tools for quantifying the tidal distortion of
a black hole's event horizon due to an orbiting companion. These tools use
techniques which require large mass ratios (companion mass $\mu$ much smaller
than black hole mass $M$), but can be used for arbitrary bound orbits, and for
any black... | [
{
"created": "Tue, 18 Apr 2017 18:00:18 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Apr 2017 15:10:33 GMT",
"version": "v2"
}
] | 2017-10-11 | [
[
"Penna",
"Robert F.",
""
],
[
"Hughes",
"Scott A.",
""
],
[
"O'Sullivan",
"Stephen",
""
]
] | In previous work, we developed tools for quantifying the tidal distortion of a black hole's event horizon due to an orbiting companion. These tools use techniques which require large mass ratios (companion mass $\mu$ much smaller than black hole mass $M$), but can be used for arbitrary bound orbits, and for any black h... |
2402.07205 | Rong-Jia Yang | Rong-Jia Yang, Yong-Ben Shi | Baryogenesis in quantum fluctuation modified gravity | 11 pages, 6 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We consider baryogenesis in quantum fluctuation modified gravity. We explore
three forms (two are newly proposed here) of baryogenesis interaction and
discuss the effect of these interaction terms on the baryon-to-entropy ratio
during the radiation era of the expanding universe. We constrain the model
parameters with... | [
{
"created": "Sun, 11 Feb 2024 13:34:34 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Apr 2024 12:46:20 GMT",
"version": "v2"
}
] | 2024-04-18 | [
[
"Yang",
"Rong-Jia",
""
],
[
"Shi",
"Yong-Ben",
""
]
] | We consider baryogenesis in quantum fluctuation modified gravity. We explore three forms (two are newly proposed here) of baryogenesis interaction and discuss the effect of these interaction terms on the baryon-to-entropy ratio during the radiation era of the expanding universe. We constrain the model parameters with t... |
1506.04432 | Jerzy Matyjasek | Jerzy Matyjasek and Pawel Sadurski | Inside the Schwarzschild-Tangherlini black holes | null | Phys. Rev. D 92, 044023 (2015) | 10.1103/PhysRevD.92.044023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The first-order semiclassical Einstein field equations are solved in the
interior of the Schwarzschild-Tangherlini black holes. The source term is taken
to be the stress-energy tensor of the quantized massive scalar field with
arbitrary curvature coupling calculated within the framework of the
Schwinger-DeWitt approx... | [
{
"created": "Sun, 14 Jun 2015 19:34:56 GMT",
"version": "v1"
}
] | 2015-08-19 | [
[
"Matyjasek",
"Jerzy",
""
],
[
"Sadurski",
"Pawel",
""
]
] | The first-order semiclassical Einstein field equations are solved in the interior of the Schwarzschild-Tangherlini black holes. The source term is taken to be the stress-energy tensor of the quantized massive scalar field with arbitrary curvature coupling calculated within the framework of the Schwinger-DeWitt approxim... |
1608.00631 | Carlos A. R. Herdeiro | Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu and Helgi
Runarsson | Kerr-Newman black holes with scalar hair | 11 pages, 4 figures; v2. Change in title and other minor changes, to
match published version | Phys.Lett. B761 (2016) 234-241 | 10.1016/j.physletb.2016.08.032 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct electrically charged Kerr black holes (BHs) with scalar hair.
Firstly, we take an uncharged scalar field, interacting with the
electromagnetic field only indirectly, via the background metric. The
corresponding family of solutions, dubbed Kerr-Newman BHs with ungauged scalar
hair, reduces to (a sub-famil... | [
{
"created": "Mon, 1 Aug 2016 22:23:28 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Sep 2016 10:00:58 GMT",
"version": "v2"
}
] | 2016-09-14 | [
[
"Delgado",
"Jorge F. M.",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
],
[
"Runarsson",
"Helgi",
""
]
] | We construct electrically charged Kerr black holes (BHs) with scalar hair. Firstly, we take an uncharged scalar field, interacting with the electromagnetic field only indirectly, via the background metric. The corresponding family of solutions, dubbed Kerr-Newman BHs with ungauged scalar hair, reduces to (a sub-family ... |
gr-qc/0405073 | Ewa Czuchry | E. Czuchry, J. Jezierski and J. Kijowski | Local approach to thermodynamics of black holes | 10 pages, to appear in Proceedings of the Seventh Hungarian
Relativity Workshop | in Relativity Today (Proc. 7th Hungarian Relativity Workshop,
2003) Ed. I. Racz, (Akad\'emiai Kiad\'o, Budapest, 2004) | null | null | gr-qc | null | Hamiltonian description of gravitational field contained in a spacetime
region with boundary $S$ being a null-like hypersurface (a wave front) is
discussed. Complete generating formula for the Hamiltonian dynamics (with no
surface integrals neglected) is presented. A quasi-local proof of the 1-st law
of black holes t... | [
{
"created": "Fri, 14 May 2004 07:41:15 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Czuchry",
"E.",
""
],
[
"Jezierski",
"J.",
""
],
[
"Kijowski",
"J.",
""
]
] | Hamiltonian description of gravitational field contained in a spacetime region with boundary $S$ being a null-like hypersurface (a wave front) is discussed. Complete generating formula for the Hamiltonian dynamics (with no surface integrals neglected) is presented. A quasi-local proof of the 1-st law of black holes the... |
1010.1933 | Babak Vakili | Babak Vakili and Nima Khosravi | Bianchi type I cyclic cosmology from Lie-algebraically deformed phase
space | 13 pages, to appear in PRD, typos corrected, Refs. added | Phys. Rev. D 82 (2010) 103509 | 10.1103/PhysRevD.82.103509 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effects of noncommutativity, in the form of a Lie-algebraically
deformed Poisson commutation relations, on the evolution of a Bianchi type I
cosmological model with a positive cosmological constant. The phase space
variables turn out to correspond to the scale factors of this model in $x$, $y$
and $z$ di... | [
{
"created": "Sun, 10 Oct 2010 16:05:20 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Nov 2010 18:07:26 GMT",
"version": "v2"
}
] | 2015-05-20 | [
[
"Vakili",
"Babak",
""
],
[
"Khosravi",
"Nima",
""
]
] | We study the effects of noncommutativity, in the form of a Lie-algebraically deformed Poisson commutation relations, on the evolution of a Bianchi type I cosmological model with a positive cosmological constant. The phase space variables turn out to correspond to the scale factors of this model in $x$, $y$ and $z$ dire... |
gr-qc/0102102 | Alessandra Buonanno | Alessandra Buonanno and Thibault Damour | The fate of classical tensor inhomogeneities in pre-big-bang string
cosmology | 16 pages, 2 figures | Phys.Rev. D64 (2001) 043501 | 10.1103/PhysRevD.64.043501 | GRP/00/553, IHES/P/01/05 | gr-qc | null | In pre-big-bang string cosmology one uses a phase of dilaton-driven inflation
to stretch an initial (microscopic) spatial patch to the (much larger) size of
the big-bang fireball. We show that the dilaton-driven inflationary phase does
not naturally iron out the initial classical tensor inhomogeneities unless the
ini... | [
{
"created": "Fri, 23 Feb 2001 23:48:15 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Buonanno",
"Alessandra",
""
],
[
"Damour",
"Thibault",
""
]
] | In pre-big-bang string cosmology one uses a phase of dilaton-driven inflation to stretch an initial (microscopic) spatial patch to the (much larger) size of the big-bang fireball. We show that the dilaton-driven inflationary phase does not naturally iron out the initial classical tensor inhomogeneities unless the initi... |
1906.02866 | Yuta Michimura Dr. | Yuta Michimura, Masaki Ando, Eleonora Capocasa, Yutaro Enomoto,
Raffaele Flaminio, Sadakazu Haino, Kazuhiro Hayama, Eiichi Hirose, Yousuke
Itoh, Tomoya Kinugawa, Kentro Komori, Matteo Leonardi, Norikatsu Mio, Koji
Nagano, Hiroyuki Nakano, Atsushi Nishizawa, Norichika Sago, Masaru Shibata,
Hisaaki Shinkai, Kenta... | Prospects for improving the sensitivity of KAGRA gravitational wave
detector | 7 pages, 3 figures, Proceedings for the Fifteenth Marcel Grossmann
Meeting, Rome, July 1-7, 2018 | null | 10.1142/9789811258251_0236 | JGW-P1910276 | gr-qc astro-ph.IM physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | KAGRA is a new gravitational wave detector which aims to begin joint
observation with Advanced LIGO and Advanced Virgo from late 2019. Here, we
present KAGRA's possible upgrade plans to improve the sensitivity in the decade
ahead. Unlike other state-of-the-art detectors, KAGRA requires different
investigations for th... | [
{
"created": "Fri, 7 Jun 2019 02:22:13 GMT",
"version": "v1"
}
] | 2023-02-22 | [
[
"Michimura",
"Yuta",
""
],
[
"Ando",
"Masaki",
""
],
[
"Capocasa",
"Eleonora",
""
],
[
"Enomoto",
"Yutaro",
""
],
[
"Flaminio",
"Raffaele",
""
],
[
"Haino",
"Sadakazu",
""
],
[
"Hayama",
"Kazuhiro",
""
],... | KAGRA is a new gravitational wave detector which aims to begin joint observation with Advanced LIGO and Advanced Virgo from late 2019. Here, we present KAGRA's possible upgrade plans to improve the sensitivity in the decade ahead. Unlike other state-of-the-art detectors, KAGRA requires different investigations for the ... |
2003.10175 | Naveena Kumara A | A. Naveena Kumara, C.L. Ahmed Rizwan, Kartheek Hegde, Ajith K.M | Repulsive Interactions in the Microstructure of Regular Hayward Black
Hole in Anti-de Sitter Spacetime | 14 pages, 5 figures. Version accepted for publication on Physics
Letters B | Physics Letters B 807 (2020) 135556 | 10.1016/j.physletb.2020.135556 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the interaction between the microstructures of Hayward-AdS black
hole using Ruppeiner geometry. Our investigation shows that the dominant
interaction between the black hole molecules is attractive in most part of the
parametric space of temperature and volume, as in van der Waals system.
However, in contrast... | [
{
"created": "Mon, 23 Mar 2020 10:44:56 GMT",
"version": "v1"
},
{
"created": "Sun, 28 Jun 2020 09:44:24 GMT",
"version": "v2"
}
] | 2020-06-30 | [
[
"Kumara",
"A. Naveena",
""
],
[
"Rizwan",
"C. L. Ahmed",
""
],
[
"Hegde",
"Kartheek",
""
],
[
"M",
"Ajith K.",
""
]
] | We study the interaction between the microstructures of Hayward-AdS black hole using Ruppeiner geometry. Our investigation shows that the dominant interaction between the black hole molecules is attractive in most part of the parametric space of temperature and volume, as in van der Waals system. However, in contrast t... |
1102.0936 | Sumati Surya | Onkar Parrikar and Sumati Surya | Causal Topology in Future and Past Distinguishing Spacetimes | 20 pages, 4 figures. Minor revisions. In particular, (i) terminology
in one of the Lemmas corrected, (ii) numbering of Lemmas, Theorems, etc.
uniformised. To appear in Classical and Quantum Gravity | Class.Quant.Grav.28:155020,2011 | 10.1088/0264-9381/28/15/155020 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The causal structure of a strongly causal spacetime is particularly well
endowed. Not only does it determine the conformal spacetime geometry when the
spacetime dimension n >2, as shown by Malament and Hawking-King-McCarthy
(MHKM), but also the manifold dimension. The MHKM result, however, applies more
generally to s... | [
{
"created": "Fri, 4 Feb 2011 15:11:09 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Jun 2011 13:15:49 GMT",
"version": "v2"
}
] | 2015-03-18 | [
[
"Parrikar",
"Onkar",
""
],
[
"Surya",
"Sumati",
""
]
] | The causal structure of a strongly causal spacetime is particularly well endowed. Not only does it determine the conformal spacetime geometry when the spacetime dimension n >2, as shown by Malament and Hawking-King-McCarthy (MHKM), but also the manifold dimension. The MHKM result, however, applies more generally to spa... |
2301.10456 | Kensuke Sueto | Kensuke Sueto, Hirotaka Yoshino | Evaporation of a nonsingular Reissner-Nordstr\"om black hole and
information loss problem | 46 pages, 14 figures | Prog Theor Exp Phys (2023) | 10.1093/ptep/ptad111 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the attractive solutions to the information loss problem is that the
event horizon does not appear in the process of gravitational collapse and
subsequent evaporation once the spacetime singularity is regularized by some
mechanism, as pointed out by Hayward and Frolov. In this paper, we examine
whether this Ha... | [
{
"created": "Wed, 25 Jan 2023 08:25:05 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Apr 2023 14:44:12 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Feb 2024 09:27:53 GMT",
"version": "v3"
}
] | 2024-02-14 | [
[
"Sueto",
"Kensuke",
""
],
[
"Yoshino",
"Hirotaka",
""
]
] | One of the attractive solutions to the information loss problem is that the event horizon does not appear in the process of gravitational collapse and subsequent evaporation once the spacetime singularity is regularized by some mechanism, as pointed out by Hayward and Frolov. In this paper, we examine whether this Hayw... |
2306.05863 | Luca Guido Molinari | Carlo Alberto Mantica and Luca Guido Molinari | The covariant approach to static spacetimes in Einstein and extended
gravity theories | 25 pages. Some misprints corrected and references added | General Relativity and Gravitation, 2023 - open access | 10.1007/s10714-023-03149-w | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a covariant study of static space-times, as such and as solutions
of gravity theories. By expressing the relevant tensors through the velocity
and the acceleration vectors that characterise static space-times, the field
equations provide a natural non-redundant set of scalar equations. The same
vectors sug... | [
{
"created": "Fri, 9 Jun 2023 12:56:08 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Sep 2023 13:36:49 GMT",
"version": "v2"
}
] | 2023-09-14 | [
[
"Mantica",
"Carlo Alberto",
""
],
[
"Molinari",
"Luca Guido",
""
]
] | We present a covariant study of static space-times, as such and as solutions of gravity theories. By expressing the relevant tensors through the velocity and the acceleration vectors that characterise static space-times, the field equations provide a natural non-redundant set of scalar equations. The same vectors sugge... |
1301.5103 | Igor Kalinichenko | I. S. Kalinichenko, P. O. Kazinski | High-temperature expansion of the one-loop free energy of a scalar field
on a curved background | 27 pages;considerable changes made,appendix B changed,equation (52)
changed abstract changed, conclusion added, some references added | Phys. Rev. D.87, 084036 (2013) | 10.1103/PhysRevD.87.084036 | null | gr-qc hep-th | http://creativecommons.org/licenses/publicdomain/ | The complete form of the high-temperature expansion of the one-loop
contribution to the free energy of a scalar field on a stationary gravitational
background is derived. The explicit expressions for the divergent and finite
parts of the high-temperature expansion in a three-dimensional space without
boundaries are o... | [
{
"created": "Tue, 22 Jan 2013 08:27:50 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Jan 2013 11:06:32 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Feb 2013 18:40:58 GMT",
"version": "v3"
},
{
"created": "Sat, 30 Mar 2013 10:03:34 GMT",
"version": "v4"
}
] | 2013-04-23 | [
[
"Kalinichenko",
"I. S.",
""
],
[
"Kazinski",
"P. O.",
""
]
] | The complete form of the high-temperature expansion of the one-loop contribution to the free energy of a scalar field on a stationary gravitational background is derived. The explicit expressions for the divergent and finite parts of the high-temperature expansion in a three-dimensional space without boundaries are obt... |
1402.5767 | Yong-Chang Huang | Ming Chen, Yong-Chang Huang | Gas Model of Gravitons with Light Speed | 9 Pages | null | null | BJUT ITP01 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We first review some aspects of gravitational wave and the thermodynamic
expression of Einstein field equations, these achieved conclusions allow people
to think of Einstein's gravitational wave as a kind of sound wave in ordinary
gas which propagates as an adiabatic compression wave. In the following, using
the prop... | [
{
"created": "Mon, 24 Feb 2014 09:53:02 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Jun 2014 16:04:50 GMT",
"version": "v2"
}
] | 2014-06-18 | [
[
"Chen",
"Ming",
""
],
[
"Huang",
"Yong-Chang",
""
]
] | We first review some aspects of gravitational wave and the thermodynamic expression of Einstein field equations, these achieved conclusions allow people to think of Einstein's gravitational wave as a kind of sound wave in ordinary gas which propagates as an adiabatic compression wave. In the following, using the proper... |
2208.03004 | Pankaj Saini | Pankaj Saini, Sajad A. Bhat, and K. G. Arun | Premerger localization of intermediate mass binary black holes with LISA
and prospects of joint observations with Athena and LSST | 13 pages, 4 figures; Published in Phys. Rev. D. v2: Fig.1 added,
minor changes to match the published version | Phys. Rev. D 106, 104015 (2022) | 10.1103/PhysRevD.106.104015 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The planned Laser Interferometric Space Antenna (LISA) will be able to detect
gravitational waves (GWs) from intermediate mass binary black holes (IMBBHs) in
the mass range $\sim 10^{2} \mbox{-} 10^{4}\,M_{\odot}$ up to a redshift
$z\sim20$. Modulation effects due to orbital motion of LISA around the Sun
facilitate p... | [
{
"created": "Fri, 5 Aug 2022 06:40:01 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Nov 2022 12:18:40 GMT",
"version": "v2"
}
] | 2022-11-21 | [
[
"Saini",
"Pankaj",
""
],
[
"Bhat",
"Sajad A.",
""
],
[
"Arun",
"K. G.",
""
]
] | The planned Laser Interferometric Space Antenna (LISA) will be able to detect gravitational waves (GWs) from intermediate mass binary black holes (IMBBHs) in the mass range $\sim 10^{2} \mbox{-} 10^{4}\,M_{\odot}$ up to a redshift $z\sim20$. Modulation effects due to orbital motion of LISA around the Sun facilitate pre... |
2205.02077 | Iver Brevik | I. Brevik and A. V. Timoshkin | Holographic description of the dissipative model of universe with
curvature | 6 pages, no figures, to appear in JETP. A reference added | JETP 135 No. 3, 320-323 (2022) | 10.1134/S1063776122090023 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We investigate the accelerated expansion of the late-time universe in the
Friedmann-Robertson-Walker metric with nonzero curvature, applying a
holographic principle based on a generalized holographic dark energy model
introduced by Nojiri and Odintsov (2005,2006). We describe the evolution of the
universe using a gen... | [
{
"created": "Wed, 4 May 2022 14:14:26 GMT",
"version": "v1"
},
{
"created": "Sat, 21 May 2022 14:03:17 GMT",
"version": "v2"
}
] | 2022-10-25 | [
[
"Brevik",
"I.",
""
],
[
"Timoshkin",
"A. V.",
""
]
] | We investigate the accelerated expansion of the late-time universe in the Friedmann-Robertson-Walker metric with nonzero curvature, applying a holographic principle based on a generalized holographic dark energy model introduced by Nojiri and Odintsov (2005,2006). We describe the evolution of the universe using a gener... |
0912.2146 | Lu\'is Filipe de Pinho Oliveira e Costa | L. Filipe O. Costa, Carlos A. R. Herdeiro | Reference Frames and the Physical Gravito-Electromagnetic Analogy | 9 Pages, 1 figure. To appear in the Proceedings of the IAU Symposium
261 "Relativity in Fundamental Astronomy: Dynamics, Reference Frames, and
Data Analysis", Virginia Beach, USA, 27 April - 1 May 2009 | Proceedings of the International Astronomical Union, Volume 5,
Symposium S261, April 2009, pp 31-39. Published by Cambridge University
Press. | 10.1017/S1743921309990111 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The similarities between linearized gravity and electromagnetism are known
since the early days of General Relativity. Using an exact approach based on
tidal tensors, we show that such analogy holds only on very special conditions
and depends crucially on the reference frame. This places restrictions on the
validity ... | [
{
"created": "Fri, 11 Dec 2009 18:07:12 GMT",
"version": "v1"
}
] | 2010-01-07 | [
[
"Costa",
"L. Filipe O.",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
]
] | The similarities between linearized gravity and electromagnetism are known since the early days of General Relativity. Using an exact approach based on tidal tensors, we show that such analogy holds only on very special conditions and depends crucially on the reference frame. This places restrictions on the validity of... |
1812.06193 | Daniele Oriti | John W. Barrett, Daniele Oriti, Ruth M. Williams | Tullio Regge's legacy: Regge calculus and discrete gravity | 15 pages; a contribution to the forthcoming volume "Tullio Regge: an
eclectic genius, from quantum gravity to computer play", Eds. L Castellani,
A. Ceresole, R. D'Auria and P. Fr\`e (World Scientific); v2: added references
to more relevant work, minor changes to the text | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The review paper "Discrete Structures in Physics", written in 2000, describes
how Regge's discretization of Einstein's theory has been applied in classical
relativity and quantum gravity. Here, developments since 2000 are reviewed
briefly, with particular emphasis on progress in quantum gravity through spin
foam mode... | [
{
"created": "Fri, 14 Dec 2018 22:20:58 GMT",
"version": "v1"
},
{
"created": "Wed, 29 May 2019 21:21:35 GMT",
"version": "v2"
}
] | 2019-05-31 | [
[
"Barrett",
"John W.",
""
],
[
"Oriti",
"Daniele",
""
],
[
"Williams",
"Ruth M.",
""
]
] | The review paper "Discrete Structures in Physics", written in 2000, describes how Regge's discretization of Einstein's theory has been applied in classical relativity and quantum gravity. Here, developments since 2000 are reviewed briefly, with particular emphasis on progress in quantum gravity through spin foam models... |
1709.09178 | Aron Jansen | Aron Jansen | Overdamped modes in Schwarzschild-de Sitter and a Mathematica package
for the numerical computation of quasinormal modes | Typos fixed, citations added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a package for Mathematica that facilitates the numerical
computation of the quasinormal mode (QNM) spectrum of a black hole/black brane.
Requiring as input only the QNM equation(s), the application of a single
Mathematica function will compute the spectrum efficiently, by discretizing the
equation(s) and s... | [
{
"created": "Tue, 26 Sep 2017 18:00:04 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Nov 2017 10:03:11 GMT",
"version": "v2"
}
] | 2017-11-20 | [
[
"Jansen",
"Aron",
""
]
] | We present a package for Mathematica that facilitates the numerical computation of the quasinormal mode (QNM) spectrum of a black hole/black brane. Requiring as input only the QNM equation(s), the application of a single Mathematica function will compute the spectrum efficiently, by discretizing the equation(s) and sol... |
2012.13465 | Juan Carlos Del \'Aguila Rodr\'iguez | Juan Carlos Del \'Aguila and Tonatiuh Matos | Geodesics near a curvature singularity of stationary and axially
symmetric space-times | 16 pages, 2 figues. To be published in Classical and Quantum Gravity | Class. Quantum Grav. 38 055008 (2021) | 10.1088/1361-6382/abd595 | Cinvestav 127/2021 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study the local behavior of geodesics in the neighborhood of
a curvature singularity contained in stationary and axially symmetric
space-times. Apart from these properties, the metrics we shall focus on will
also be required to admit a quadratic first integral for their geodesics. In
particular, we se... | [
{
"created": "Thu, 24 Dec 2020 23:49:05 GMT",
"version": "v1"
}
] | 2022-11-08 | [
[
"Del Águila",
"Juan Carlos",
""
],
[
"Matos",
"Tonatiuh",
""
]
] | In this work we study the local behavior of geodesics in the neighborhood of a curvature singularity contained in stationary and axially symmetric space-times. Apart from these properties, the metrics we shall focus on will also be required to admit a quadratic first integral for their geodesics. In particular, we sear... |
2204.13220 | Valeri Frolov P | Valeri P. Frolov | Black holes in the limiting curvature theory of gravity | 11 pages, 1 figure | null | 10.1142/S0217751X22430096 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss a recently proposed limiting curvature theory of gravity and its
application to the problem of singularities inside black holes. In this theory
the growth of the curvature is suppressed by specially chosen inequality
constraints included in the gravity action. We consider a case of a spherically
symmetric ... | [
{
"created": "Wed, 27 Apr 2022 22:42:34 GMT",
"version": "v1"
}
] | 2022-10-26 | [
[
"Frolov",
"Valeri P.",
""
]
] | We discuss a recently proposed limiting curvature theory of gravity and its application to the problem of singularities inside black holes. In this theory the growth of the curvature is suppressed by specially chosen inequality constraints included in the gravity action. We consider a case of a spherically symmetric fo... |
1105.3710 | Norbert Bodendorfer | Norbert Bodendorfer, Thomas Thiemann, Andreas Thurn | Towards Loop Quantum Supergravity (LQSG) II. p-Form Sector | 12 pages. v2: Journal version. Minor clarifications and corrections | Class. Quantum Grav. 30 (2013) 045007 | 10.1088/0264-9381/30/4/045007 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In our companion paper, we focussed on the quantisation of the
Rarita-Schwinger sector of Supergravity theories in various dimensions by using
an extension of Loop Quantum Gravity to all spacetime dimensions. In this
paper, we extend this analysis by considering the quantisation of additional
bosonic fields necessary... | [
{
"created": "Wed, 18 May 2011 18:25:14 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Feb 2013 19:17:57 GMT",
"version": "v2"
}
] | 2013-02-13 | [
[
"Bodendorfer",
"Norbert",
""
],
[
"Thiemann",
"Thomas",
""
],
[
"Thurn",
"Andreas",
""
]
] | In our companion paper, we focussed on the quantisation of the Rarita-Schwinger sector of Supergravity theories in various dimensions by using an extension of Loop Quantum Gravity to all spacetime dimensions. In this paper, we extend this analysis by considering the quantisation of additional bosonic fields necessary t... |
gr-qc/9908053 | Alvaro L. | H. N. N\'u\~nez-Y\'epez | The initial fate of an anisotropic JBD universe | null | Phys.Lett. A258 (1999) 210-216 | 10.1016/S0375-9601(99)00357-6 | null | gr-qc | null | The dynamical effects on the scale factors due to the scalar $\phi$-field at
the early stages of a supposedly anisotropic Universe expansion in the
scalar-tensor cosmology of Jordan-Brans and Dicke is studied. This universe
shows an {\sl isotropic} evolution and, depending on the value of the theorie's
coupling param... | [
{
"created": "Thu, 19 Aug 1999 17:59:50 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Núñez-Yépez",
"H. N.",
""
]
] | The dynamical effects on the scale factors due to the scalar $\phi$-field at the early stages of a supposedly anisotropic Universe expansion in the scalar-tensor cosmology of Jordan-Brans and Dicke is studied. This universe shows an {\sl isotropic} evolution and, depending on the value of the theorie's coupling paramet... |
gr-qc/0208041 | Yuan-Zhong Zhang | C.G. Shao, Y.Z. Zhang, J. Luo and Z.Z. Liu | Effect of Earth's rotation on the trajectories of free-fall bodies in
Equivalence Principle Experiment | 6 pages, 4 figures | null | 10.1088/0253-6102/39/3/297 | null | gr-qc | null | Owing to Earth's rotation a free-fall body would move in an elliptical orbit
rather than along a straight line forward to the center of the Earth. In this
paper on the basis of the theory for spin-spin coupling between macroscopic
rotating bodies we study violation of the equivalence principle from
long-distance free... | [
{
"created": "Fri, 16 Aug 2002 09:14:59 GMT",
"version": "v1"
}
] | 2018-01-17 | [
[
"Shao",
"C. G.",
""
],
[
"Zhang",
"Y. Z.",
""
],
[
"Luo",
"J.",
""
],
[
"Liu",
"Z. Z.",
""
]
] | Owing to Earth's rotation a free-fall body would move in an elliptical orbit rather than along a straight line forward to the center of the Earth. In this paper on the basis of the theory for spin-spin coupling between macroscopic rotating bodies we study violation of the equivalence principle from long-distance free-f... |
gr-qc/0612085 | Chris Van Den Broeck | Chris Van Den Broeck, Anand S. Sengupta | Compact binary inspiral and the science potential of third-generation
ground-based gravitational wave detectors | 3 pages, 4 figures. Brief summary of a talk given at the 11th Marcel
Grossmann meeting, Berlin, July 2006; to appear in the Proceedings | null | null | null | gr-qc astro-ph | null | We consider EGO as a possible third-generation ground-based gravitational
wave detector and evaluate its capabilities for the detection and
interpretation of compact binary inspiral signals. We identify areas of
astrophysics and cosmology where EGO would have qualitative advantages, using
Advanced LIGO as a benchmark... | [
{
"created": "Wed, 13 Dec 2006 18:12:49 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Broeck",
"Chris Van Den",
""
],
[
"Sengupta",
"Anand S.",
""
]
] | We consider EGO as a possible third-generation ground-based gravitational wave detector and evaluate its capabilities for the detection and interpretation of compact binary inspiral signals. We identify areas of astrophysics and cosmology where EGO would have qualitative advantages, using Advanced LIGO as a benchmark f... |
gr-qc/0110043 | Carl H. Brans | Torsten Asselmeyer-Maluga and Carl H. Brans | Cosmological anomalies and exotic smoothness structures | null | Gen.Rel.Grav. 34 (2002) 1767-1771 | null | null | gr-qc | null | It seems to be generally accepted that apparently anomalous cosmological
observations, such as accelerating expansion, etc., necessarily are
inconsistent with standard general relativity and standard matter sources.
Following the suggestions of S{\l}adkowski, we point out that in addition to
exotic theories and exoti... | [
{
"created": "Mon, 8 Oct 2001 21:43:33 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Asselmeyer-Maluga",
"Torsten",
""
],
[
"Brans",
"Carl H.",
""
]
] | It seems to be generally accepted that apparently anomalous cosmological observations, such as accelerating expansion, etc., necessarily are inconsistent with standard general relativity and standard matter sources. Following the suggestions of S{\l}adkowski, we point out that in addition to exotic theories and exotic ... |
1301.4726 | Guoying Chee | G. Y. Chee | Acceleration of the cosmic expansion induced by symmetry breaking | 6 papes, 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is proved that in order to obtain a model of the accelerated cosmic
expansion the thing one only need to do is to add a perturbation term to the
Einstein-Hilbert Lagrangian. This term leads to some symmetry breaking terms in
the fields equation, which makes the cosmic expansion accelerating. A vacuum de
Sitter sol... | [
{
"created": "Mon, 21 Jan 2013 02:00:52 GMT",
"version": "v1"
}
] | 2013-01-22 | [
[
"Chee",
"G. Y.",
""
]
] | It is proved that in order to obtain a model of the accelerated cosmic expansion the thing one only need to do is to add a perturbation term to the Einstein-Hilbert Lagrangian. This term leads to some symmetry breaking terms in the fields equation, which makes the cosmic expansion accelerating. A vacuum de Sitter solut... |
2211.15555 | Stefano Ansoldi | Stefano Ansoldi and Takahiro Tanaka | Pathology in WKB wave function for tunneling assisted by gravity | 20 pages, 7 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There are several exotic tunneling processes that can be realized only by
incorporating the effect of gravity. Here, we point out that we encounter
difficulties in constructing the WKB wave function, once we try to describe
quantum fluctuations around the semi-classical tunneling path. We present
examples of patholog... | [
{
"created": "Mon, 28 Nov 2022 16:58:19 GMT",
"version": "v1"
}
] | 2022-11-29 | [
[
"Ansoldi",
"Stefano",
""
],
[
"Tanaka",
"Takahiro",
""
]
] | There are several exotic tunneling processes that can be realized only by incorporating the effect of gravity. Here, we point out that we encounter difficulties in constructing the WKB wave function, once we try to describe quantum fluctuations around the semi-classical tunneling path. We present examples of pathology ... |
gr-qc/9901038 | Sang Pyo Kim | Sang Pyo Kim, Sung Ku Kim, Kwang-Sup Soh, Jae Hyung Yee | Renormalization of Black Hole Entropy | Proceedings of the 5th Korean-Italian Symposium on Relativistic
Astrophysics, Seoul Korea, 1997; 10 pages, RevTex | J.KoreanPhys.Soc.33:S524-S531,1998 | null | null | gr-qc | null | We review the renormalization of one-loop effective action for gravity
coupled to a scalar field and that of the Bekenstein-Hawking entropy of a black
hole plus the statistical entropy of the scalar field. It is found that the
total entropy of the black hole's geometric entropy and the statistical entropy
yields the ... | [
{
"created": "Thu, 14 Jan 1999 04:53:39 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kim",
"Sang Pyo",
""
],
[
"Kim",
"Sung Ku",
""
],
[
"Soh",
"Kwang-Sup",
""
],
[
"Yee",
"Jae Hyung",
""
]
] | We review the renormalization of one-loop effective action for gravity coupled to a scalar field and that of the Bekenstein-Hawking entropy of a black hole plus the statistical entropy of the scalar field. It is found that the total entropy of the black hole's geometric entropy and the statistical entropy yields the re... |
1506.08076 | Muhammad Azam | M. Azam, S. A. Mardan and M. A. Rehman | Fate of Electromagnetic Field on the Cracking of PSR J1614-2230 in
Quadratic Regime | 21 pages, 8 figures, version to appear in advances in high energy
physics | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the cracking of compact object PSR J1614-2230 in
quadratic regime with electromagnetic field. For this purpose, we develop a
general formalism to determine the cracking of charged compact objects. We
apply the local density perturbations to the hydrostatic equilibrium equation
as well as all t... | [
{
"created": "Thu, 25 Jun 2015 11:53:00 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Oct 2015 06:35:27 GMT",
"version": "v2"
}
] | 2015-10-19 | [
[
"Azam",
"M.",
""
],
[
"Mardan",
"S. A.",
""
],
[
"Rehman",
"M. A.",
""
]
] | In this paper, we study the cracking of compact object PSR J1614-2230 in quadratic regime with electromagnetic field. For this purpose, we develop a general formalism to determine the cracking of charged compact objects. We apply the local density perturbations to the hydrostatic equilibrium equation as well as all the... |
gr-qc/0410140 | Leonardo Gualtieri | O. Benhar, V. Ferrari, L. Gualtieri | Gravitational waves from neutron stars described by modern EOS | 3 pages, 1+1 figures, to appear in the Proceedings of "XVI SIGRAV
Conference", Vietri sul Mare (Italy), 13-16 September 2004 | null | 10.1063/1.1891555 | null | gr-qc | null | The frequencies and damping times of neutron star (and quark star)
oscillations have been computed using the most recent equations of state
available in the literature. We find that some of the empirical relations that
connect the frequencies and damping times of the modes to the mass and radius
of the star, and that... | [
{
"created": "Thu, 28 Oct 2004 14:34:12 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Benhar",
"O.",
""
],
[
"Ferrari",
"V.",
""
],
[
"Gualtieri",
"L.",
""
]
] | The frequencies and damping times of neutron star (and quark star) oscillations have been computed using the most recent equations of state available in the literature. We find that some of the empirical relations that connect the frequencies and damping times of the modes to the mass and radius of the star, and that w... |
2207.03841 | Valerio Faraoni | Valerio Faraoni, Pierre-Antoine Graham, Alexandre Leblanc | Critical solutions of nonminimally coupled scalar field theory and
first-order thermodynamics of gravity | 11 pages, LaTeX | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Analytical solutions of nonminimally coupled scalar field cosmology
corresponding to critical scalar field values constitute a potential challenge
to the recent first-order thermodynamics of scalar-tensor gravity (a formalism
picturing general relativity as the zero-temperature equilibrium state for
modified gravity)... | [
{
"created": "Fri, 8 Jul 2022 11:51:01 GMT",
"version": "v1"
}
] | 2022-07-11 | [
[
"Faraoni",
"Valerio",
""
],
[
"Graham",
"Pierre-Antoine",
""
],
[
"Leblanc",
"Alexandre",
""
]
] | Analytical solutions of nonminimally coupled scalar field cosmology corresponding to critical scalar field values constitute a potential challenge to the recent first-order thermodynamics of scalar-tensor gravity (a formalism picturing general relativity as the zero-temperature equilibrium state for modified gravity). ... |
1810.10418 | Angelos Lykkas | I. Antoniadis, A. Karam, A. Lykkas, K. Tamvakis | Palatini inflation in models with an $R^2$ term | 22 pages, 8 figures, JCAP accepted version | null | 10.1088/1475-7516/2018/11/028 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Starobinsky model, considered in the framework of the Palatini formalism,
in contrast to the metric formulation, does not provide us with a model for
inflation, due to the absence of a propagating scalar degree of freedom that
can play the role of the inflaton. In the present article we study the Palatini
formula... | [
{
"created": "Wed, 24 Oct 2018 14:26:59 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Nov 2018 14:23:19 GMT",
"version": "v2"
}
] | 2018-11-28 | [
[
"Antoniadis",
"I.",
""
],
[
"Karam",
"A.",
""
],
[
"Lykkas",
"A.",
""
],
[
"Tamvakis",
"K.",
""
]
] | The Starobinsky model, considered in the framework of the Palatini formalism, in contrast to the metric formulation, does not provide us with a model for inflation, due to the absence of a propagating scalar degree of freedom that can play the role of the inflaton. In the present article we study the Palatini formulati... |
gr-qc/9909068 | N. K. Dadhich | L.K. Patel and Naresh Dadhich | Exact solutions for null fluid collapse in higher dimensions | 10 pages, LaTEX version | null | null | IUCAA-37/99 | gr-qc | null | A large family of inhomogeneous non-static spherically symmetric solutions of
the Einstein equation for null fluid in higher dimensions has been obtained. It
encompasses higher dimensional versions of many previously known solutions such
as Vaidya, charged Vaidya and Husain solutions and also some new solutions
repre... | [
{
"created": "Tue, 21 Sep 1999 12:17:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Patel",
"L. K.",
""
],
[
"Dadhich",
"Naresh",
""
]
] | A large family of inhomogeneous non-static spherically symmetric solutions of the Einstein equation for null fluid in higher dimensions has been obtained. It encompasses higher dimensional versions of many previously known solutions such as Vaidya, charged Vaidya and Husain solutions and also some new solutions represe... |
1910.01880 | Keitaro Tomikawa | Keitaro Tomikawa, Tsutomu Kobayashi | On the gauge dependence of gravitational waves generated at second order
from scalar perturbations | 12 pages, 3 figures | Phys. Rev. D 101, 083529 (2020) | 10.1103/PhysRevD.101.083529 | RUP-19-27 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit and clarify the gauge dependence of gravitational waves generated
at second order from scalar perturbations. In a universe dominated by a perfect
fluid with a constant equation-of-state parameter $w$, we compute the energy
density of such induced gravitational waves in the Newtonian, comoving, and
uniform ... | [
{
"created": "Fri, 4 Oct 2019 11:43:52 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Oct 2019 09:27:43 GMT",
"version": "v2"
}
] | 2020-04-29 | [
[
"Tomikawa",
"Keitaro",
""
],
[
"Kobayashi",
"Tsutomu",
""
]
] | We revisit and clarify the gauge dependence of gravitational waves generated at second order from scalar perturbations. In a universe dominated by a perfect fluid with a constant equation-of-state parameter $w$, we compute the energy density of such induced gravitational waves in the Newtonian, comoving, and uniform cu... |
gr-qc/0301122 | Shahar Hod | Shahar Hod | Kerr black hole quasinormal frequencies | 3 pages, 2 figures | Phys.Rev. D67 (2003) 081501 | 10.1103/PhysRevD.67.081501 | null | gr-qc astro-ph hep-th quant-ph | null | Black-hole quasinormal modes (QNM) have been the subject of much recent
attention, with the hope that these oscillation frequencies may shed some light
on the elusive theory of quantum gravity. We compare numerical results for the
QNM spectrum of the (rotating) Kerr black hole with an {\it exact} formula
Re$\omega \t... | [
{
"created": "Thu, 30 Jan 2003 11:40:03 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Feb 2003 09:27:27 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Hod",
"Shahar",
""
]
] | Black-hole quasinormal modes (QNM) have been the subject of much recent attention, with the hope that these oscillation frequencies may shed some light on the elusive theory of quantum gravity. We compare numerical results for the QNM spectrum of the (rotating) Kerr black hole with an {\it exact} formula Re$\omega \to ... |
1804.07346 | Eric Gourgoulhon | Eric Gourgoulhon and Marco Mancini | Symbolic tensor calculus on manifolds: a SageMath implementation | Lectures at JNCF 2018, CIRM, Marseille (France); 58 pages; to appear
in "Les Cours du CIRM" (cedram.org); changes with respect to v1: cedram
format, some updates, LaTeX rendering of Jupyter cells | Les cours du CIRM 6, I (2018) | 10.5802/ccirm.26 | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | These lecture notes present a method for symbolic tensor calculus that (i)
runs on fully specified smooth manifolds (described by an atlas), (ii) is not
limited to a single coordinate chart or vector frame, (iii) runs even on
non-parallelizable manifolds and (iv) is independent of the symbolic backend
used to perform... | [
{
"created": "Thu, 19 Apr 2018 19:33:53 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Nov 2018 20:36:19 GMT",
"version": "v2"
}
] | 2019-03-14 | [
[
"Gourgoulhon",
"Eric",
""
],
[
"Mancini",
"Marco",
""
]
] | These lecture notes present a method for symbolic tensor calculus that (i) runs on fully specified smooth manifolds (described by an atlas), (ii) is not limited to a single coordinate chart or vector frame, (iii) runs even on non-parallelizable manifolds and (iv) is independent of the symbolic backend used to perform c... |
2111.03467 | Jose Alejandro Rosabal Rodriguez | J. A. Rosabal | Quantum Gravity on a Manifold with boundaries: Schr\"{o}dinger Evolution
and Constraints | Published in EPJC | null | 10.1140/epjc/s10052-022-10543-2 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this work, we derive the boundary Schr\"{o}dinger (functional) equation
for the wave function of a quantum gravity system on a manifold with boundaries
together with a new constraint equation defined on the timelike boundary. From
a detailed analysis of the gravity boundary condition on the spatial boundary,
we fi... | [
{
"created": "Fri, 5 Nov 2021 12:43:44 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Jul 2022 09:57:43 GMT",
"version": "v2"
}
] | 2022-07-07 | [
[
"Rosabal",
"J. A.",
""
]
] | In this work, we derive the boundary Schr\"{o}dinger (functional) equation for the wave function of a quantum gravity system on a manifold with boundaries together with a new constraint equation defined on the timelike boundary. From a detailed analysis of the gravity boundary condition on the spatial boundary, we find... |
gr-qc/0602025 | Gaurav Khanna | Daniel Cartin, Gaurav Khanna | Wave functions for the Schwarschild black hole interior | 15 pages, 4 figures, published version | Phys.Rev. D73 (2006) 104009 | 10.1103/PhysRevD.73.104009 | null | gr-qc hep-th | null | Using the Hamiltonian constraint derived by Ashtekar and Bojowald, we look
for pre-classical wave functions in the Schwarzschild interior. In particular,
when solving this difference equation by separation of variables, an inequality
is obtained relating the Immirzi parameter $\gamma$ to the quantum ambiguity
$\delta... | [
{
"created": "Tue, 7 Feb 2006 19:58:42 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Apr 2006 16:08:25 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Cartin",
"Daniel",
""
],
[
"Khanna",
"Gaurav",
""
]
] | Using the Hamiltonian constraint derived by Ashtekar and Bojowald, we look for pre-classical wave functions in the Schwarzschild interior. In particular, when solving this difference equation by separation of variables, an inequality is obtained relating the Immirzi parameter $\gamma$ to the quantum ambiguity $\delta$ ... |
2003.05491 | Pedro Fernandes | Pedro G. S. Fernandes | Charged Black Holes in AdS Spaces in $4D$ Einstein Gauss-Bonnet Gravity | 6 pages, 1 figure. v3: accepted in Physics Letters B | Physics Letters B 805, 135468 (2020) | 10.1016/j.physletb.2020.135468 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently a non-trivial 4-dimensional theory of gravity that claims to
circumvent Lovelock's theorem and avoid Ostrogradsky instability was formulated
in [D. Glavan and C. Lin, Phys. Rev. Lett. 124, 081301 (2020)]. This theory,
named "$4D$ Einstein Gauss-Bonnet gravity", presents several novel predictions
for cosmolog... | [
{
"created": "Wed, 11 Mar 2020 19:10:31 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Mar 2020 16:22:27 GMT",
"version": "v2"
},
{
"created": "Wed, 6 May 2020 15:41:23 GMT",
"version": "v3"
}
] | 2020-05-14 | [
[
"Fernandes",
"Pedro G. S.",
""
]
] | Recently a non-trivial 4-dimensional theory of gravity that claims to circumvent Lovelock's theorem and avoid Ostrogradsky instability was formulated in [D. Glavan and C. Lin, Phys. Rev. Lett. 124, 081301 (2020)]. This theory, named "$4D$ Einstein Gauss-Bonnet gravity", presents several novel predictions for cosmology ... |
gr-qc/9612009 | B. S. Sathyaprakash | B.S. Sathyaprakash (IUCAA, UWCC) | Signal analysis of gravitational waves | 12 pages (including 1 figure); latex (needs cupconf.sty bundled
together with source); to appear in "Relativistic Gravitation and
Gravitational Radiation", eds. Jean-Alain Marck and Jean-Pierre Lasota (CUP) | null | null | null | gr-qc | null | In this lecture we describe the data analysis problem for insparlling
binaries. We discuss the detection statistic, how to make realiable estimation
and how to compute bias in the estimation of parameters. A combination of
geometrical ideas and numerical methods are employed to estimate computational
costs involved i... | [
{
"created": "Tue, 3 Dec 1996 15:20:11 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sathyaprakash",
"B. S.",
"",
"IUCAA, UWCC"
]
] | In this lecture we describe the data analysis problem for insparlling binaries. We discuss the detection statistic, how to make realiable estimation and how to compute bias in the estimation of parameters. A combination of geometrical ideas and numerical methods are employed to estimate computational costs involved in ... |
0803.0915 | Piotr Jaranowski | Thibault Damour, Piotr Jaranowski, and Gerhard Sch\"afer | Effective one body approach to the dynamics of two spinning black holes
with next-to-leading order spin-orbit coupling | REVTeX, 22 pages, 7 figures | Phys.Rev.D78:024009,2008 | 10.1103/PhysRevD.78.024009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a recent, novel Hamiltonian formulation of the gravitational
interaction of spinning binaries, we extend the Effective One Body (EOB)
description of the dynamics of two spinning black holes to next-to-leading
order (NLO) in the spin-orbit interaction. The spin-dependent EOB Hamiltonian
is constructed from four ... | [
{
"created": "Thu, 6 Mar 2008 17:20:27 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Damour",
"Thibault",
""
],
[
"Jaranowski",
"Piotr",
""
],
[
"Schäfer",
"Gerhard",
""
]
] | Using a recent, novel Hamiltonian formulation of the gravitational interaction of spinning binaries, we extend the Effective One Body (EOB) description of the dynamics of two spinning black holes to next-to-leading order (NLO) in the spin-orbit interaction. The spin-dependent EOB Hamiltonian is constructed from four ma... |
1701.01028 | Rafael Augusto Couceiro Correa | P. H. R. S. Moraes, R. A. C. Correa, R. V. Lobato | Analytical general solutions for static wormholes in $f(R,T)$ gravity | null | null | 10.1088/1475-7516/2017/07/029 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Originally proposed as a tool for teaching the general theory of relativity,
wormholes are today approached in many different ways and are seeing as an
efficient alternative for interstellar and time travel. Attempts to achieve
observational signatures of wormholes have been growing as the subject has
became more and... | [
{
"created": "Mon, 26 Dec 2016 14:35:50 GMT",
"version": "v1"
}
] | 2017-07-26 | [
[
"Moraes",
"P. H. R. S.",
""
],
[
"Correa",
"R. A. C.",
""
],
[
"Lobato",
"R. V.",
""
]
] | Originally proposed as a tool for teaching the general theory of relativity, wormholes are today approached in many different ways and are seeing as an efficient alternative for interstellar and time travel. Attempts to achieve observational signatures of wormholes have been growing as the subject has became more and m... |
gr-qc/9701044 | Louis Marchildon | Louis Marchildon (Universite du Quebec) | Lie Symmetries of Einstein's Vacuum Equations in N Dimensions | 14 pages, LaTeX, no figures | J. Nonlin. Math. Phys. 5 (1998) 68-81 | 10.2991/jnmp.1998.5.1.7 | null | gr-qc | null | We investigate Lie symmetries of Einstein's vacuum equations in N dimensions,
with a cosmological term. For this purpose, we first write down the second
prolongation of the symmetry generating vector fields, and compute its action
on Einstein's equations. Instead of setting to zero the coefficients of all
independent... | [
{
"created": "Mon, 20 Jan 1997 16:47:15 GMT",
"version": "v1"
}
] | 2015-05-26 | [
[
"Marchildon",
"Louis",
"",
"Universite du Quebec"
]
] | We investigate Lie symmetries of Einstein's vacuum equations in N dimensions, with a cosmological term. For this purpose, we first write down the second prolongation of the symmetry generating vector fields, and compute its action on Einstein's equations. Instead of setting to zero the coefficients of all independent p... |
2009.11179 | Peter K.F. Kuhfittig | Peter K.F. Kuhfittig | A note on the stability of Morris-Thorne wormholes | 6 pages, no figures | Fundamental J. Mod. Phys., vol. 14, pp. 23-31, 2020 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Two critical issues in the study of Morris-Thorne wormholes concerns the
stability of such structures, as well as their compatibility with quantum field
theory. This note discusses an important subset characterized by zero tidal
forces. It is shown that such wormholes (1) are in stable equilibrium using a
criterion b... | [
{
"created": "Wed, 23 Sep 2020 14:42:48 GMT",
"version": "v1"
}
] | 2020-09-24 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | Two critical issues in the study of Morris-Thorne wormholes concerns the stability of such structures, as well as their compatibility with quantum field theory. This note discusses an important subset characterized by zero tidal forces. It is shown that such wormholes (1) are in stable equilibrium using a criterion bas... |
gr-qc/9606079 | Thibault Damour | Thibault Damour | Gravitation, experiment and cosmology | 37 pages, Latex, uses hep93.sty, based on lectures given at Les
Houches 1992, SUSY-95 and Corfu 1995, to appear in the Proceedings of the 5th
Hellenic School of Elementary Particle Physics | null | null | IHES/P/95/104 | gr-qc | null | The confrontation between general relativity (and its theoretically most
plausible deviations) and experimental or observational results is summarized.
Some discussion is devoted to the various methodologies used in confronting
theory and experiment. Both weak-field (solar system) and strong-field (binary
pulsar) tes... | [
{
"created": "Thu, 27 Jun 1996 19:32:08 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Damour",
"Thibault",
""
]
] | The confrontation between general relativity (and its theoretically most plausible deviations) and experimental or observational results is summarized. Some discussion is devoted to the various methodologies used in confronting theory and experiment. Both weak-field (solar system) and strong-field (binary pulsar) tests... |
gr-qc/0312009 | Sami Mohammad | M. Sami and Alexey Toporensky | Phantom Field and the Fate of Universe | RevTeX4, 5 pages and 3 eps figures; references updated | Mod.Phys.Lett.A19:1509,2004 | 10.1142/S0217732304013921 | null | gr-qc astro-ph hep-ph hep-th | null | In this paper we analyze the cosmological dynamics of phantom field in a
variety of potentials unbounded from above. We demonstrate that the nature of
future evolution generically depends upon the steepness of the phantom
potential and discuss the fate of Universe accordingly.
| [
{
"created": "Mon, 1 Dec 2003 18:10:27 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Dec 2003 13:19:43 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Sami",
"M.",
""
],
[
"Toporensky",
"Alexey",
""
]
] | In this paper we analyze the cosmological dynamics of phantom field in a variety of potentials unbounded from above. We demonstrate that the nature of future evolution generically depends upon the steepness of the phantom potential and discuss the fate of Universe accordingly. |
1010.5949 | Mikhail Smolyakov | Mikhail N. Smolyakov | Bulk metric of brane world models and submanifolds in 6D
pseudo-Euclidean space-time | 5 pages, typos corrected | Int.J.Geom.Meth.Mod.Phys.8:239-243,2011 | 10.1142/S0219887811005105 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this short note, five-dimensional brane world models with dS_{4} metric on
the branes are discussed. The explicit coordinate transformations, which show
the equivalence between the bulk metric of these brane world models and the
metric induced on an appropriate submanifolds in the flat six-dimensional
pseudo-Eucli... | [
{
"created": "Thu, 28 Oct 2010 12:55:21 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Nov 2010 20:38:06 GMT",
"version": "v2"
}
] | 2011-03-22 | [
[
"Smolyakov",
"Mikhail N.",
""
]
] | In this short note, five-dimensional brane world models with dS_{4} metric on the branes are discussed. The explicit coordinate transformations, which show the equivalence between the bulk metric of these brane world models and the metric induced on an appropriate submanifolds in the flat six-dimensional pseudo-Euclide... |
gr-qc/9712075 | Piotr Jaranowski | Piotr Jaranowski and Gerhard Schaefer | 3rd post-Newtonian higher order Hamilton dynamics for two-body
point-mass systems | LaTeX, 27 pages, submitted to Physical Review D | Phys.Rev.D57:7274-7291,1998; Erratum-ibid.D63:029902,2001 | 10.1103/PhysRevD.57.7274 10.1103/PhysRevD.63.029902 | null | gr-qc | null | The paper presents the conservative dynamics of two-body point-mass systems
up to the third post-Newtonian order ($1/c^6$). The two-body dynamics is given
in terms of a higher order ADM Hamilton function which results from a third
post-Newtonian Routh functional for the total field-plus-matter system. The
applied reg... | [
{
"created": "Wed, 17 Dec 1997 14:54:20 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Jaranowski",
"Piotr",
""
],
[
"Schaefer",
"Gerhard",
""
]
] | The paper presents the conservative dynamics of two-body point-mass systems up to the third post-Newtonian order ($1/c^6$). The two-body dynamics is given in terms of a higher order ADM Hamilton function which results from a third post-Newtonian Routh functional for the total field-plus-matter system. The applied regul... |
1911.04398 | Vishnu S. Namboothiri | Vishnu S Namboothiri | Raychaudhuri Equation in Kaluza Klein space time | 12 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We studied the Raychaudhuri equation in Kaluza-Klein space-time. We derived
an additional term that is solely due to Kaluza-Klein's unification. This term
affects the defocus of world lines near the singularity of charged
higher-dimensional black holes. We illustrated it with a static
higher-dimensional black hole ge... | [
{
"created": "Mon, 11 Nov 2019 17:10:29 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Nov 2019 05:21:03 GMT",
"version": "v2"
}
] | 2019-11-26 | [
[
"Namboothiri",
"Vishnu S",
""
]
] | We studied the Raychaudhuri equation in Kaluza-Klein space-time. We derived an additional term that is solely due to Kaluza-Klein's unification. This term affects the defocus of world lines near the singularity of charged higher-dimensional black holes. We illustrated it with a static higher-dimensional black hole gene... |
1203.0395 | Varun Sahni | Varun Sahni and Aleksey Toporensky | Cosmological Hysteresis and the Cyclic Universe | 31 pages, 8 figures. Matches version published in Phys Rev D85,
123542 (2012) | Phys Rev D85, 123542 (2012) | 10.1103/PhysRevD.85.123542 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Universe filled with a homogeneous scalar field exhibits `Cosmological
hysteresis'. Cosmological hysteresis is caused by the asymmetry in the equation
of state during expansion and contraction. This asymmetry results in the
formation of a hysteresis loop: $\oint pdV$, whose value can be non-vanishing
during each os... | [
{
"created": "Fri, 2 Mar 2012 09:07:07 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Mar 2012 07:43:03 GMT",
"version": "v2"
},
{
"created": "Tue, 3 Jul 2012 09:11:34 GMT",
"version": "v3"
}
] | 2013-05-30 | [
[
"Sahni",
"Varun",
""
],
[
"Toporensky",
"Aleksey",
""
]
] | A Universe filled with a homogeneous scalar field exhibits `Cosmological hysteresis'. Cosmological hysteresis is caused by the asymmetry in the equation of state during expansion and contraction. This asymmetry results in the formation of a hysteresis loop: $\oint pdV$, whose value can be non-vanishing during each osci... |
2201.12824 | Xiaoning Wu | Xiaokai He, Xiaoning Wu and Naqing Xie | On the angular momentum of compact binary coalescence | 8 pages | null | 10.1088/1572-9494/acb7cf | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The supertranslation ambiguity issue of angular momentum is a long-standing
problem in general relativity. Recently, there appeared the first definition of
angular momentum at null infinity that is supertranslation invariant. However,
in the compact binary coalescence community, supertranslation ambiguity is
often ig... | [
{
"created": "Sun, 30 Jan 2022 14:12:10 GMT",
"version": "v1"
},
{
"created": "Thu, 5 May 2022 12:49:57 GMT",
"version": "v2"
}
] | 2023-04-26 | [
[
"He",
"Xiaokai",
""
],
[
"Wu",
"Xiaoning",
""
],
[
"Xie",
"Naqing",
""
]
] | The supertranslation ambiguity issue of angular momentum is a long-standing problem in general relativity. Recently, there appeared the first definition of angular momentum at null infinity that is supertranslation invariant. However, in the compact binary coalescence community, supertranslation ambiguity is often igno... |
1107.5410 | Anne Nzioki | Anne Marie Nzioki, Rituparno Goswami, Peter K.S. Dunsby and George F.
R. Ellis | On Shear-Free perturbations of FLRW Universes | null | Phys.Rev.D84:124028,2011 | 10.1103/PhysRevD.84.124028 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A surprising exact result for the Einstein Field Equations is that if
pressure-free matter is moving in a shear-free way, then it must be either
expansion-free or rotation-free. It has been suggested this result is also true
for any barotropic perfect fluid, but a proof has remained elusive. We consider
the case of b... | [
{
"created": "Wed, 27 Jul 2011 08:29:56 GMT",
"version": "v1"
}
] | 2012-02-20 | [
[
"Nzioki",
"Anne Marie",
""
],
[
"Goswami",
"Rituparno",
""
],
[
"Dunsby",
"Peter K. S.",
""
],
[
"Ellis",
"George F. R.",
""
]
] | A surprising exact result for the Einstein Field Equations is that if pressure-free matter is moving in a shear-free way, then it must be either expansion-free or rotation-free. It has been suggested this result is also true for any barotropic perfect fluid, but a proof has remained elusive. We consider the case of bar... |
gr-qc/9607066 | Fernando Barbero | A. Tiemblo and R. Tresguerres | Time Evolution in Dynamical Spacetimes | 27 pages, TeX | null | null | null | gr-qc | null | We present a gauge--theoretical derivation of the notion of time, suitable to
describe the Hamiltonian time evolution of gravitational systems. It is based
on a nonlinear coset realization of the Poincar\'e group, implying the time
component of the coframe to be invariant, and thus to represent a metric time.
The uni... | [
{
"created": "Fri, 26 Jul 1996 08:48:44 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Tiemblo",
"A.",
""
],
[
"Tresguerres",
"R.",
""
]
] | We present a gauge--theoretical derivation of the notion of time, suitable to describe the Hamiltonian time evolution of gravitational systems. It is based on a nonlinear coset realization of the Poincar\'e group, implying the time component of the coframe to be invariant, and thus to represent a metric time. The unita... |
gr-qc/9312005 | null | Nadja S. Magalhaes and Carlos O. Escobar | Optimal Filters for the Detection of Continuous Gravitational Waves | 14 pages, REVTEX, Preprint IFUSP/P-1090 | null | null | null | gr-qc | null | We determine the transfer functions of two kinds of filters that can be used
in the detection of continuous gravitational radiation. The first one optimizes
the signal-to-noise ratio, and the second reproduces the wave with minimum
error. We analyse the behaviour of these filters in connection with actual
detection s... | [
{
"created": "Thu, 2 Dec 1993 15:48:59 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"Magalhaes",
"Nadja S.",
""
],
[
"Escobar",
"Carlos O.",
""
]
] | We determine the transfer functions of two kinds of filters that can be used in the detection of continuous gravitational radiation. The first one optimizes the signal-to-noise ratio, and the second reproduces the wave with minimum error. We analyse the behaviour of these filters in connection with actual detection sch... |
1208.6158 | Ernesto Nungesser | Ernesto Nungesser | Future non-linear stability for solutions of the Einstein-Vlasov system
of Bianchi types II and VI$_0$ | 18 pages | (2012) J. Math. Phys. 53 102503 | 10.1063/1.4758930 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent paper arXiv:1208.4231 we have treated the future non-linear
stability for reflection symmetric solutions of the Einstein-Vlasov system of
Bianchi types II and VI$_0$. We have been able now to remove the reflection
symmetry assumption, thus treating the non-diagonal case. Apart from the
increasing complexi... | [
{
"created": "Thu, 30 Aug 2012 12:59:43 GMT",
"version": "v1"
}
] | 2015-06-11 | [
[
"Nungesser",
"Ernesto",
""
]
] | In a recent paper arXiv:1208.4231 we have treated the future non-linear stability for reflection symmetric solutions of the Einstein-Vlasov system of Bianchi types II and VI$_0$. We have been able now to remove the reflection symmetry assumption, thus treating the non-diagonal case. Apart from the increasing complexity... |
1009.4332 | Wung-Hong Huang | Wung-Hong Huang | ADM Mass on General Spacetime and Hawking-Page Phase Transition in
Magnetic Black Brane | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive a formula which enable us to evaluate the ADM mass in a more
general curved spacetime. We apply the formula to evaluate the thermodynamical
quantities of the Melvin magnetic black D-branes. We see that there is the
Hawking-Page phase transition and the corresponding dual gauge theory will show
the confineme... | [
{
"created": "Wed, 22 Sep 2010 11:37:15 GMT",
"version": "v1"
}
] | 2010-09-23 | [
[
"Huang",
"Wung-Hong",
""
]
] | We derive a formula which enable us to evaluate the ADM mass in a more general curved spacetime. We apply the formula to evaluate the thermodynamical quantities of the Melvin magnetic black D-branes. We see that there is the Hawking-Page phase transition and the corresponding dual gauge theory will show the confinement... |
gr-qc/0012007 | Jeremy S. Heyl | Jeremy S. Heyl | Electron-Positron Jets from a Critically Magnetized Black Hole | 10 pages, 6 figures, submitted to Phys. Rev. D | Phys.Rev.D63:064028,2001 | 10.1103/PhysRevD.63.064028 | null | gr-qc astro-ph hep-ph | null | The curved spacetime surrounding a rotating black hole dramatically alters
the structure of nearby electromagnetic fields. The Wald field which is an
asymptotically uniform magnetic field aligned with the angular momentum of the
hole provides a convenient starting point to analyze the effects of radiative
corrections... | [
{
"created": "Fri, 1 Dec 2000 19:40:30 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Heyl",
"Jeremy S.",
""
]
] | The curved spacetime surrounding a rotating black hole dramatically alters the structure of nearby electromagnetic fields. The Wald field which is an asymptotically uniform magnetic field aligned with the angular momentum of the hole provides a convenient starting point to analyze the effects of radiative corrections o... |
gr-qc/0408038 | Mauricio Bellini | Mauricio Bellini (Mar del Plata University & CONICET) | Back-reaction effect in power-law inflation | 6 pages, no figures (accepted in Il Nuovo Cimento B) | Nuovo Cim. B119 (2004) 191-195 | 10.1393/ncb/i2004-10066-1 | null | gr-qc astro-ph hep-ph | null | I consider a power-law inflationary model taking into account back-reaction
effects. The interesting result is that the spectrum for the scalar field
fluctuations does not depends on the expansion rate of the universe $p$ and
that it result to be scale invariant for cosmological scales. However, the
amplitude for the... | [
{
"created": "Thu, 12 Aug 2004 16:09:22 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Bellini",
"Mauricio",
"",
"Mar del Plata University & CONICET"
]
] | I consider a power-law inflationary model taking into account back-reaction effects. The interesting result is that the spectrum for the scalar field fluctuations does not depends on the expansion rate of the universe $p$ and that it result to be scale invariant for cosmological scales. However, the amplitude for these... |
0809.1915 | Tiberiu Harko | M. E. Kahil, T. Harko | Is dark matter an extra-dimensional effect? | 11 pages, no figures, accepted for publication in MPLA; references
added | Mod.Phys.Lett.A24:667-682,2009 | 10.1142/S0217732309028667 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the possibility that the observed behavior of test particles
outside galaxies, which is usually explained by assuming the presence of dark
matter, is the result of the dynamical evolution of particles in higher
dimensional space-times. Hence, dark matter may be a direct consequence of the
presence of a... | [
{
"created": "Thu, 11 Sep 2008 04:57:56 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Mar 2009 05:02:42 GMT",
"version": "v2"
}
] | 2009-04-21 | [
[
"Kahil",
"M. E.",
""
],
[
"Harko",
"T.",
""
]
] | We investigate the possibility that the observed behavior of test particles outside galaxies, which is usually explained by assuming the presence of dark matter, is the result of the dynamical evolution of particles in higher dimensional space-times. Hence, dark matter may be a direct consequence of the presence of an ... |
1305.0777 | Jose Geraldo Pereira | J. G. Pereira | Gravitational waves: a foundational review | This manuscript is a (revised and updated) compilation of the results
published in arXiv:0709.1603 and arXiv:0809.2911, and is intended as an arXiv
paper. V3: presentation changes aiming at clarifying the discussion | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The standard linear approach to the gravitational waves theory is critically
reviewed. Contrary to the prevalent understanding, it is pointed out that this
theory contains many conceptual and technical obscure issues that require
further analysis.
| [
{
"created": "Fri, 3 May 2013 16:55:54 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jul 2013 13:47:08 GMT",
"version": "v2"
},
{
"created": "Wed, 27 May 2015 12:06:22 GMT",
"version": "v3"
}
] | 2015-05-28 | [
[
"Pereira",
"J. G.",
""
]
] | The standard linear approach to the gravitational waves theory is critically reviewed. Contrary to the prevalent understanding, it is pointed out that this theory contains many conceptual and technical obscure issues that require further analysis. |
2010.09048 | Julio Arrechea | Julio Arrechea, Carlos Barcel\'o, Valentin Boyanov, Luis J. Garay | Vacuum semiclassical gravity does not leave space for safe singularities | 13 pages, 5 figures. Version accepted for publication in Universe.
This article belongs to the Special Issue "Gravitational Singularities and
Their Quantum Fates" | null | 10.3390/universe7080281 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativity predicts its own demise at singularities, but also appears
to conveniently shield itself from the catastrophic consequences of such
singularities, making them safe. For instance, if strong cosmic censorship were
ultimately satisfied, spacetime singularities, although present, would not pose
any pra... | [
{
"created": "Sun, 18 Oct 2020 17:57:01 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Aug 2021 09:18:56 GMT",
"version": "v2"
}
] | 2021-08-12 | [
[
"Arrechea",
"Julio",
""
],
[
"Barceló",
"Carlos",
""
],
[
"Boyanov",
"Valentin",
""
],
[
"Garay",
"Luis J.",
""
]
] | General relativity predicts its own demise at singularities, but also appears to conveniently shield itself from the catastrophic consequences of such singularities, making them safe. For instance, if strong cosmic censorship were ultimately satisfied, spacetime singularities, although present, would not pose any pract... |
1306.6441 | Nicholas Tsamis | N. C. Tsamis (U. Crete) and R. P. Woodard (U. Florida) | Pure Gravitational Back-Reaction Observables | 15 pages, uses LaTeX2e | null | 10.1103/PhysRevD.88.044040 | CCTP-2013-09, UFIFT-QG-13-06 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | After discussing the various issues regarding and requirements on pure
quantum gravitational observables in homogeneous-isotropic conditions, we
construct a composite operator observable satisfying most of them. We also
expand it to first order in the loop counting parameter and suggest it as a
physical quantifier of... | [
{
"created": "Thu, 27 Jun 2013 09:18:27 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Tsamis",
"N. C.",
"",
"U. Crete"
],
[
"Woodard",
"R. P.",
"",
"U. Florida"
]
] | After discussing the various issues regarding and requirements on pure quantum gravitational observables in homogeneous-isotropic conditions, we construct a composite operator observable satisfying most of them. We also expand it to first order in the loop counting parameter and suggest it as a physical quantifier of g... |
gr-qc/0405048 | Jian-Miin Liu | Jian-Miin Liu | Equilibrium velocity distribution of low-energy particles in spherically
symmetric gravitational field | 10 pages with no figure | Fronties in Field Theory, ed. O. Kovras, Nova Science Publishers
(New York, 2005), pp317-331 | null | null | gr-qc cond-mat.stat-mech | null | Based on Einstein's theory of gravitation, we discuss the influence of a
spherically symmetric gravitational field on Maxwell's law of velocity
distribution. We derive the equilibrium velocity distribution of low-energy
particles in the spherically symmetric gravitational field and calculate the
escape rate of low-en... | [
{
"created": "Sun, 9 May 2004 12:00:50 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Liu",
"Jian-Miin",
""
]
] | Based on Einstein's theory of gravitation, we discuss the influence of a spherically symmetric gravitational field on Maxwell's law of velocity distribution. We derive the equilibrium velocity distribution of low-energy particles in the spherically symmetric gravitational field and calculate the escape rate of low-ener... |
2311.01756 | Boris Latosh | Boris Latosh, Miok Park | Black Holes in Einstein-scalar-Gauss-Bonnet model probed with scattering
amplitudes | 28 pages, 4 figures | null | null | CTPU-PTC-23-46 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examined the quantum properties of scalar-tensor gravity with a coupling
to the Gauss-Bonnet term in the low energy limit, exploring both linear and
quadratic couplings. We calculated the leading-order corrections to the
non-relativistic one-body gravitational potential and the metric by studying
the gravitational... | [
{
"created": "Fri, 3 Nov 2023 07:27:05 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Nov 2023 06:01:03 GMT",
"version": "v2"
},
{
"created": "Fri, 21 Jun 2024 05:35:37 GMT",
"version": "v3"
}
] | 2024-06-24 | [
[
"Latosh",
"Boris",
""
],
[
"Park",
"Miok",
""
]
] | We examined the quantum properties of scalar-tensor gravity with a coupling to the Gauss-Bonnet term in the low energy limit, exploring both linear and quadratic couplings. We calculated the leading-order corrections to the non-relativistic one-body gravitational potential and the metric by studying the gravitational f... |
2405.12290 | Vitor Cardoso | Vitor Cardoso, Gregorio Carullo, Marina De Amicis, Francisco Duque,
Takuya Katagiri, David Pereniguez, Jaime Redondo-Yuste, Thomas F.M. Spieksma,
Zhen Zhong | Hushing black holes: tails in dynamical spacetimes | 13 pages, to appear in Physical Review D Letters | Phys. Rev. D 109, L121502 (2024) | 10.1103/PhysRevD.109.L121502 | null | gr-qc astro-ph.HE math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Stationary, asymptotically flat, black hole solutions of the vacuum field
equations of General Relativity belong to the Kerr family. But how does one
approach this state, dynamically? Linearized fluctuations decay at late times,
at fixed spatial position, as a Price power law for generic initial conditions.
However, ... | [
{
"created": "Mon, 20 May 2024 18:00:20 GMT",
"version": "v1"
}
] | 2024-06-27 | [
[
"Cardoso",
"Vitor",
""
],
[
"Carullo",
"Gregorio",
""
],
[
"De Amicis",
"Marina",
""
],
[
"Duque",
"Francisco",
""
],
[
"Katagiri",
"Takuya",
""
],
[
"Pereniguez",
"David",
""
],
[
"Redondo-Yuste",
"Jaime",
... | Stationary, asymptotically flat, black hole solutions of the vacuum field equations of General Relativity belong to the Kerr family. But how does one approach this state, dynamically? Linearized fluctuations decay at late times, at fixed spatial position, as a Price power law for generic initial conditions. However, li... |
gr-qc/0606011 | Celine Cattoen | Celine Cattoen (Victoria University of Wellington) | Cosmological milestones and gravastars - topics in general relativity | 171 pages; MSc thesis | null | null | null | gr-qc | null | In this thesis, we consider two different problems relevant to general
relativity. Over the last few years, opinions on physically relevant
singularities occurring in FRW cosmologies have considerably changed. We
present an extensive catalogue of such cosmological milestones using
generalized power series both at the... | [
{
"created": "Fri, 2 Jun 2006 01:35:50 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Jun 2006 22:30:18 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Cattoen",
"Celine",
"",
"Victoria University of Wellington"
]
] | In this thesis, we consider two different problems relevant to general relativity. Over the last few years, opinions on physically relevant singularities occurring in FRW cosmologies have considerably changed. We present an extensive catalogue of such cosmological milestones using generalized power series both at the k... |
gr-qc/0604005 | Malik Rakhmanov | Malik Rakhmanov | Rank deficiency and Tikhonov regularization in the inverse problem for
gravitational-wave bursts | 12 pages, 5 figures | Class.Quant.Grav.23:S673-S686,2006 | 10.1088/0264-9381/23/19/S05 | LIGO-P060005 | gr-qc | null | Coherent techniques for searches of gravitational-wave bursts effectively
combine data from several detectors, taking into account differences in their
responses. The efforts are now focused on the maximum likelihood principle as
the most natural way to combine data, which can also be used without prior
knowledge of ... | [
{
"created": "Mon, 3 Apr 2006 01:09:31 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Apr 2006 01:16:09 GMT",
"version": "v2"
},
{
"created": "Tue, 19 Sep 2006 17:00:45 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Rakhmanov",
"Malik",
""
]
] | Coherent techniques for searches of gravitational-wave bursts effectively combine data from several detectors, taking into account differences in their responses. The efforts are now focused on the maximum likelihood principle as the most natural way to combine data, which can also be used without prior knowledge of th... |
1204.2015 | Hongwei Yu | Wenting Zhou and Hongwei Yu | Can spacetime curvature induced corrections to Lamb shift be observable? | 13 pages, 3 figures, slight title change, clarifications and more
discussions added, version to be published in JHEP | JHEP 10(2012)172 | 10.1007/JHEP10(2012)172 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Lamb shift results from the coupling of an atom to vacuum fluctuations of
quantum fields, so corrections are expected to arise when the spacetime is
curved since the vacuum fluctuations are modified by the presence of spacetime
curvature. Here, we calculate the curvature-induced correction to the Lamb
shift outsi... | [
{
"created": "Tue, 10 Apr 2012 00:24:58 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Oct 2012 04:52:04 GMT",
"version": "v2"
}
] | 2012-11-02 | [
[
"Zhou",
"Wenting",
""
],
[
"Yu",
"Hongwei",
""
]
] | The Lamb shift results from the coupling of an atom to vacuum fluctuations of quantum fields, so corrections are expected to arise when the spacetime is curved since the vacuum fluctuations are modified by the presence of spacetime curvature. Here, we calculate the curvature-induced correction to the Lamb shift outside... |
1907.12940 | Amir Hadi Ziaie | H. Moradpour, A. H. Ziaie, S. Ghaffari, and F. Feleppa | The generalized and extended uncertainty principles and their
implications on the Jeans mass | 6 pages, 2 figures | MNRAS 488 L69 (2019) | 10.1093/mnrasl/slz098 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The generalized and extended uncertainty principles affect the Newtonian
gravity and also the geometry of the thermodynamic phase space. Under the
influence of the latter, the energy-temperature relation of ideal gas may
change. Moreover, it seems that the Newtonian gravity is modified in the
framework of the R\'{e}n... | [
{
"created": "Sun, 28 Jul 2019 07:25:05 GMT",
"version": "v1"
}
] | 2019-07-31 | [
[
"Moradpour",
"H.",
""
],
[
"Ziaie",
"A. H.",
""
],
[
"Ghaffari",
"S.",
""
],
[
"Feleppa",
"F.",
""
]
] | The generalized and extended uncertainty principles affect the Newtonian gravity and also the geometry of the thermodynamic phase space. Under the influence of the latter, the energy-temperature relation of ideal gas may change. Moreover, it seems that the Newtonian gravity is modified in the framework of the R\'{e}nyi... |
1306.5820 | Jan Steinhoff | Sayan Chakrabarti, T\'erence Delsate, Jan Steinhoff | Effective action and linear response of compact objects in Newtonian
gravity | RevTeX, 19 pages, 1 figure, 1 table, relativistic generalization in
arXiv:1304.2228 [gr-qc]. v2: minor corrections and additions, v3: published
version | Phys. Rev. D 88, 084038 (2013) | 10.1103/PhysRevD.88.084038 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply an effective field theory method for the gravitational interaction
of compact stars, developed within the context of general relativity, to
Newtonian gravity. In this effective theory a compact object is represented by
a point particle possessing generic gravitational multipole moments. The time
evolution of... | [
{
"created": "Tue, 25 Jun 2013 01:11:14 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Jul 2013 14:59:59 GMT",
"version": "v2"
},
{
"created": "Sat, 26 Oct 2013 18:28:19 GMT",
"version": "v3"
}
] | 2013-10-30 | [
[
"Chakrabarti",
"Sayan",
""
],
[
"Delsate",
"Térence",
""
],
[
"Steinhoff",
"Jan",
""
]
] | We apply an effective field theory method for the gravitational interaction of compact stars, developed within the context of general relativity, to Newtonian gravity. In this effective theory a compact object is represented by a point particle possessing generic gravitational multipole moments. The time evolution of t... |
2406.08813 | Yongqiang Wang | Tian-Xiang Ma, Yong-Qiang Wang | Frozen boson stars in an infinite tower of higher-derivative gravity | 19 pages, 8 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we present a solution for a five-dimensional boson star under
gravity with infinite tower of higher curvature corrections. We discover that
when the coupling constant exceeds a certain threshold, an alternative
configuration emerges, distinct from the conventional five-dimensional boson
star. This new ... | [
{
"created": "Thu, 13 Jun 2024 05:11:14 GMT",
"version": "v1"
}
] | 2024-06-14 | [
[
"Ma",
"Tian-Xiang",
""
],
[
"Wang",
"Yong-Qiang",
""
]
] | In this paper, we present a solution for a five-dimensional boson star under gravity with infinite tower of higher curvature corrections. We discover that when the coupling constant exceeds a certain threshold, an alternative configuration emerges, distinct from the conventional five-dimensional boson star. This new st... |
gr-qc/0106033 | Uzan Jean Philippe | Evelise Gausmann, Roland Lehoucq, Jean-Pierre Luminet, Jean-Philippe
Uzan, and Jeffrey Weeks | Topological Lensing in Spherical Spaces | 32 pages, 26 figures | Class.Quant.Grav.18:5155-5186,2001 | 10.1088/0264-9381/18/23/311 | null | gr-qc astro-ph | null | This article gives the construction and complete classification of all
three-dimensional spherical manifolds, and orders them by decreasing volume, in
the context of multiconnected universe models with positive spatial curvature.
It discusses which spherical topologies are likely to be detectable by
crystallographic ... | [
{
"created": "Mon, 11 Jun 2001 09:48:03 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Gausmann",
"Evelise",
""
],
[
"Lehoucq",
"Roland",
""
],
[
"Luminet",
"Jean-Pierre",
""
],
[
"Uzan",
"Jean-Philippe",
""
],
[
"Weeks",
"Jeffrey",
""
]
] | This article gives the construction and complete classification of all three-dimensional spherical manifolds, and orders them by decreasing volume, in the context of multiconnected universe models with positive spatial curvature. It discusses which spherical topologies are likely to be detectable by crystallographic me... |
1308.4510 | Mojahed Parsi Mood | M. Parsi Mood, Javad T. Firouzjaee, Reza Mansouri | Gravitational Lensing by a structure in a cosmological background | 13 pages, 16 figures | Physical Review D 88, 083011 (2013) | 10.1103/PhysRevD.88.083011 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use an exact general relativistic model structure within an FRW
cosmological background based on a LTB metric to study the gravitational
lensing by a cosmological and dynamical structure. Using different density
profiles for the model structure, the deviation angle and the time delay
through the gravitational lens... | [
{
"created": "Wed, 21 Aug 2013 08:36:22 GMT",
"version": "v1"
}
] | 2013-11-28 | [
[
"Mood",
"M. Parsi",
""
],
[
"Firouzjaee",
"Javad T.",
""
],
[
"Mansouri",
"Reza",
""
]
] | We use an exact general relativistic model structure within an FRW cosmological background based on a LTB metric to study the gravitational lensing by a cosmological and dynamical structure. Using different density profiles for the model structure, the deviation angle and the time delay through the gravitational lensin... |
2307.13026 | Geraint Pratten | Geraint Pratten, Patricia Schmidt, Hannah Middleton, Alberto Vecchio | Precision tracking of massive black hole spin evolution with LISA | 14+6 pages, 8 figures, fixed typo | null | null | null | gr-qc astro-ph.GA astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | The Laser Interferometer Space Antenna (LISA) will play a vital role in
constraining the origin and evolution of massive black holes throughout the
Universe. In this study we use a waveform model (IMRPhenomXPHM) that includes
both precession and higher multipoles, and full Bayesian inference to explore
the accuracy t... | [
{
"created": "Mon, 24 Jul 2023 18:00:01 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Jul 2023 14:01:23 GMT",
"version": "v2"
}
] | 2023-07-28 | [
[
"Pratten",
"Geraint",
""
],
[
"Schmidt",
"Patricia",
""
],
[
"Middleton",
"Hannah",
""
],
[
"Vecchio",
"Alberto",
""
]
] | The Laser Interferometer Space Antenna (LISA) will play a vital role in constraining the origin and evolution of massive black holes throughout the Universe. In this study we use a waveform model (IMRPhenomXPHM) that includes both precession and higher multipoles, and full Bayesian inference to explore the accuracy to ... |
2209.00020 | Christian Pfeifer | Sebastian Bahamonde and Shokoufe Faraji and Eva Hackmann and Christian
Pfeifer | Thick accretion disk configurations in the Born-Infeld teleparallel
gravity | null | Physical Review D (Vol. 106, No. 8), 2022 | 10.1103/PhysRevD.106.084046 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The main goal of this paper is to investigate one of the important
astrophysical systems, namely Thick accretion disks, in the background of the
spherically symmetric solution in Born-Infeld teleparallel gravity to examine
observable predictions of the theory in the vicinity of black holes. Thus, the
properties of th... | [
{
"created": "Wed, 31 Aug 2022 18:00:01 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Oct 2022 15:52:20 GMT",
"version": "v2"
}
] | 2022-10-27 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Faraji",
"Shokoufe",
""
],
[
"Hackmann",
"Eva",
""
],
[
"Pfeifer",
"Christian",
""
]
] | The main goal of this paper is to investigate one of the important astrophysical systems, namely Thick accretion disks, in the background of the spherically symmetric solution in Born-Infeld teleparallel gravity to examine observable predictions of the theory in the vicinity of black holes. Thus, the properties of the ... |
1805.11579 | LVC Publications | The LIGO Scientific Collaboration, the Virgo Collaboration, B. P.
Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams,
P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, B. Agarwal, M. Agathos,
K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, B.
Allen, G. Allen, A. A... | Properties of the binary neutron star merger GW170817 | 32 pages, 15 figures. Version 3 is the final published version;
results are unchanged compared to previous versions. Data behind the figures,
including posterior samples, are available at
dcc.ligo.org/LIGO-P1800061/public. The gravitational wave strain data for
this event are available at the LIGO Open Science ... | Phys. Rev. X 9, 011001 (2019) | 10.1103/PhysRevX.9.011001 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | On August 17, 2017, the Advanced LIGO and Advanced Virgo gravitational-wave
detectors observed a low-mass compact binary inspiral. The initial sky
localization of the source of the gravitational-wave signal, GW170817, allowed
electromagnetic observatories to identify NGC 4993 as the host galaxy. In this
work, we impr... | [
{
"created": "Tue, 29 May 2018 16:55:48 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Oct 2018 18:00:30 GMT",
"version": "v2"
},
{
"created": "Tue, 22 Jan 2019 19:56:03 GMT",
"version": "v3"
}
] | 2019-01-24 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Acernese",
"F.",
""
],
[
"Ackley",
"K.",
... | On August 17, 2017, the Advanced LIGO and Advanced Virgo gravitational-wave detectors observed a low-mass compact binary inspiral. The initial sky localization of the source of the gravitational-wave signal, GW170817, allowed electromagnetic observatories to identify NGC 4993 as the host galaxy. In this work, we improv... |
0810.1599 | J. Fernando Barbero G. | J. Fernando Barbero G., Eduardo J. S. Villase\~nor | On the computation of black hole entropy in loop quantum gravity | 25 pages | Class.Quant.Grav.26:035017,2009 | 10.1088/0264-9381/26/3/035017 | null | gr-qc math-ph math.CO math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss some issues related to the computation of black hole entropy in
loop quantum gravity from the novel point of view provided by the recent
number-theoretical methods introduced by the authors and their collaborators.
In particular we give exact expressions, in the form of integral transforms,
for the black h... | [
{
"created": "Thu, 9 Oct 2008 08:40:20 GMT",
"version": "v1"
}
] | 2010-05-19 | [
[
"G.",
"J. Fernando Barbero",
""
],
[
"Villaseñor",
"Eduardo J. S.",
""
]
] | We discuss some issues related to the computation of black hole entropy in loop quantum gravity from the novel point of view provided by the recent number-theoretical methods introduced by the authors and their collaborators. In particular we give exact expressions, in the form of integral transforms, for the black hol... |
1304.5675 | Ryuichi Fujita | Vijay Varma, Ryuichi Fujita, Ashok Choudhary and Bala R. Iyer | Comparison of post-Newtonian templates for extreme mass ratio inspirals | 10 pages | Phys. Rev. D 88, 024038 (2013) | 10.1103/PhysRevD.88.024038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extreme mass ratio inspirals (EMRIs), the inspirals of compact objects into
supermassive black holes, are important gravitational wave sources for the
Laser Interferometer Space Antenna (LISA). We study the performance of various
post-Newtonian (PN) template families relative to the high precision numerical
waveforms... | [
{
"created": "Sat, 20 Apr 2013 23:04:47 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jul 2013 16:03:00 GMT",
"version": "v2"
}
] | 2013-07-31 | [
[
"Varma",
"Vijay",
""
],
[
"Fujita",
"Ryuichi",
""
],
[
"Choudhary",
"Ashok",
""
],
[
"Iyer",
"Bala R.",
""
]
] | Extreme mass ratio inspirals (EMRIs), the inspirals of compact objects into supermassive black holes, are important gravitational wave sources for the Laser Interferometer Space Antenna (LISA). We study the performance of various post-Newtonian (PN) template families relative to the high precision numerical waveforms i... |
2010.00956 | Allan Alinea | Allan L. Alinea | On the Disformal Transformation of the Einstein-Hilbert Action | accepted for publication in Jordan Journal of Physics, 10 pages, one
figure, revisions: fixed typographical errors in some equations, updated one
reference | Jordan J. Phys. 16 (2024) no.5, 507 | 10.47011/16.5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Disformal transformation is a generalisation of the well-known conformal
transformation commonly elaborated in mainstream graduate texts in gravity
(relativity) and modern cosmology. This transformation is one of the most
important mathematical operations in scalar tensor theories attempting to
address pressing probl... | [
{
"created": "Thu, 1 Oct 2020 17:06:23 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Oct 2020 17:43:01 GMT",
"version": "v2"
},
{
"created": "Sat, 9 Jul 2022 04:30:45 GMT",
"version": "v3"
}
] | 2024-01-23 | [
[
"Alinea",
"Allan L.",
""
]
] | Disformal transformation is a generalisation of the well-known conformal transformation commonly elaborated in mainstream graduate texts in gravity (relativity) and modern cosmology. This transformation is one of the most important mathematical operations in scalar tensor theories attempting to address pressing problem... |
gr-qc/0404106 | Giovanni Imponente | Giovanni Imponente and Giovanni Montani | Mixmaster Chaoticity as Semiclassical Limit of the Canonical Quantum
Dynamics | 9 pages, 1 figure | Int.J.Mod.Phys. D12 (2003) 977-984 | 10.1142/S0218271803003499 | null | gr-qc | null | Within a cosmological framework, we provide a Hamiltonian analysis of the
Mixmaster Universe dynamics on the base of a standard Arnowitt-Deser-Misner
approach, showing how the chaotic behavior characterizing the evolution of the
system near the cosmological singularity can be obtained as the semiclassical
limit of th... | [
{
"created": "Mon, 26 Apr 2004 09:50:35 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Imponente",
"Giovanni",
""
],
[
"Montani",
"Giovanni",
""
]
] | Within a cosmological framework, we provide a Hamiltonian analysis of the Mixmaster Universe dynamics on the base of a standard Arnowitt-Deser-Misner approach, showing how the chaotic behavior characterizing the evolution of the system near the cosmological singularity can be obtained as the semiclassical limit of the ... |
2311.06021 | Sabrina D'Antonio | S. D'Antonio, C. Palomba, P. Astone, S. Dall'Osso, S. Dal Pra, S.
Frasca, P. Leaci, F. Muciaccia, O. J. Piccinni, L. Pierini, M. Serra | A semi-coherent generalization of the 5-vector method to search for
continuous gravitational waves | 16 pages, 12 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The emission of continuous gravitational waves (CWs), with duration much
longer than the typical data taking runs, is expected from several sources,
notably spinning neutron stars, asymmetric with respect to their rotation axis
and more exotic sources, like ultra-light scalar boson clouds formed around
Kerr black hol... | [
{
"created": "Fri, 10 Nov 2023 12:11:10 GMT",
"version": "v1"
}
] | 2023-11-13 | [
[
"D'Antonio",
"S.",
""
],
[
"Palomba",
"C.",
""
],
[
"Astone",
"P.",
""
],
[
"Dall'Osso",
"S.",
""
],
[
"Pra",
"S. Dal",
""
],
[
"Frasca",
"S.",
""
],
[
"Leaci",
"P.",
""
],
[
"Muciaccia",
"F.",
... | The emission of continuous gravitational waves (CWs), with duration much longer than the typical data taking runs, is expected from several sources, notably spinning neutron stars, asymmetric with respect to their rotation axis and more exotic sources, like ultra-light scalar boson clouds formed around Kerr black holes... |
1812.04037 | Francisco Jos\'e Maldonado Torralba | \'Alvaro de la Cruz-Dombriz, Francisco Jos\'e Maldonado Torralba,
Anupam Mazumdar | Non-singular and ghost-free infinite derivative gravity with torsion | 5 pages, 1 figure. Minor changes, conclusions unchanged | Phys. Rev. D 99, 104021 (2019) | 10.1103/PhysRevD.99.104021 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the most general quadratic curvature action with torsion including
infinite covariant derivatives and study its implications around the Minkowski
background via the Palatini approach. Provided the torsion is solely given by
the background axial field, the metric and torsion are shown to decouple, and
both ... | [
{
"created": "Mon, 10 Dec 2018 19:23:22 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jan 2019 14:08:42 GMT",
"version": "v2"
}
] | 2019-05-22 | [
[
"de la Cruz-Dombriz",
"Álvaro",
""
],
[
"Torralba",
"Francisco José Maldonado",
""
],
[
"Mazumdar",
"Anupam",
""
]
] | We present the most general quadratic curvature action with torsion including infinite covariant derivatives and study its implications around the Minkowski background via the Palatini approach. Provided the torsion is solely given by the background axial field, the metric and torsion are shown to decouple, and both of... |
gr-qc/0310058 | Christian Boehmer | Christian G. Boehmer | The Einstein static universe with torsion and the sign problem of the
cosmological constant | 8 pages, LaTeX; minor layout changes, typos corrected, one new
equation, new reference [5], completed reference [13], two references added | Class.Quant.Grav. 21 (2004) 1119-1124 | 10.1088/0264-9381/21/4/025 | TUW-03-31, Preprint ESI 1384 | gr-qc astro-ph hep-th | null | In the field equations of Einstein-Cartan theory with cosmological constant a
static spherically symmetric perfect fluid with spin density satisfying the
Weyssenhoff restriction is considered. This serves as a rough model of space
filled with (fermionic) dark matter. From this the Einstein static universe
with consta... | [
{
"created": "Fri, 10 Oct 2003 16:14:57 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Oct 2003 09:26:48 GMT",
"version": "v2"
},
{
"created": "Tue, 14 Oct 2003 10:46:54 GMT",
"version": "v3"
},
{
"created": "Fri, 23 Jan 2004 08:47:57 GMT",
"version": "v4"
},
{
"c... | 2007-05-23 | [
[
"Boehmer",
"Christian G.",
""
]
] | In the field equations of Einstein-Cartan theory with cosmological constant a static spherically symmetric perfect fluid with spin density satisfying the Weyssenhoff restriction is considered. This serves as a rough model of space filled with (fermionic) dark matter. From this the Einstein static universe with constant... |
1110.0686 | Lorenzo Sindoni | Lorenzo Sindoni | Emergent Models for Gravity: an Overview of Microscopic Models | null | SIGMA 8 (2012), 027, 45 pages | 10.3842/SIGMA.2012.027 | AEI-2011-68 | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/3.0/ | We give a critical overview of various attempts to describe gravity as an
emergent phenomenon, starting from examples of condensed matter physics, to
arrive to more sophisticated pregeometric models. The common line of thought is
to view the graviton as a composite particle/collective mode. However, we will
describe ... | [
{
"created": "Tue, 4 Oct 2011 13:55:38 GMT",
"version": "v1"
},
{
"created": "Sat, 12 May 2012 06:16:46 GMT",
"version": "v2"
}
] | 2012-05-15 | [
[
"Sindoni",
"Lorenzo",
""
]
] | We give a critical overview of various attempts to describe gravity as an emergent phenomenon, starting from examples of condensed matter physics, to arrive to more sophisticated pregeometric models. The common line of thought is to view the graviton as a composite particle/collective mode. However, we will describe ma... |
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