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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1008.0689 | Matt Visser | Jozef Skakala (Victoria University of Wellington) and Matt Visser
(Victoria University of Wellington) | Bi-metric pseudo-Finslerian spacetimes | 8 pages | J.Geom.Phys.61:1396-1400, 2011 | 10.1016/j.geomphys.2011.03.003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Finsler spacetimes have become increasingly popular within the theoretical
physics community over the last two decades. Because physicists need to use
pseudo-Finsler structures to describe propagation}of signals, there will be
nonzero null vectors in both the tangent and cotangent spaces --- this causes
significant p... | [
{
"created": "Wed, 4 Aug 2010 03:47:46 GMT",
"version": "v1"
}
] | 2011-04-06 | [
[
"Skakala",
"Jozef",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | Finsler spacetimes have become increasingly popular within the theoretical physics community over the last two decades. Because physicists need to use pseudo-Finsler structures to describe propagation}of signals, there will be nonzero null vectors in both the tangent and cotangent spaces --- this causes significant pro... |
1902.03735 | Bibhas Majhi Ranjan | Ashmita Das, Surojit Dalui, Chandramouli Chowdhury, Bibhas Ranjan
Majhi | Conformal Vacuum and Fluctuation-Dissipation in de-Sitter Universe and
Black Hole Spacetimes | Minor modification, to appear in Phys. Rev. D | Phys. Rev. D 100, 085002 (2019) | 10.1103/PhysRevD.100.085002 | null | gr-qc cond-mat.stat-mech hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the studies of quantum field theory in curved spacetime, the ambiguous
concept of vacuum state and the particle content is a long-standing debatable
aspect. So far it is well known to us that in the background of the curved
spacetime, some privileged class of observers detect particle production in the
suitably ch... | [
{
"created": "Mon, 11 Feb 2019 05:35:43 GMT",
"version": "v1"
},
{
"created": "Sat, 21 Sep 2019 03:00:41 GMT",
"version": "v2"
}
] | 2019-10-16 | [
[
"Das",
"Ashmita",
""
],
[
"Dalui",
"Surojit",
""
],
[
"Chowdhury",
"Chandramouli",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
]
] | In the studies of quantum field theory in curved spacetime, the ambiguous concept of vacuum state and the particle content is a long-standing debatable aspect. So far it is well known to us that in the background of the curved spacetime, some privileged class of observers detect particle production in the suitably chos... |
gr-qc/0311073 | Guillermo A. Mena Marugan | J. Fernando Barbero G., Guillermo A. Mena Marugan, and Eduardo J. S.
Villase\~nor | Time Uncertainty in Quantum Gravitational Systems | (4 pages, no figures) Accepted for publication in Physical Review D | Phys.Rev. D69 (2004) 044017 | 10.1103/PhysRevD.69.044017 | null | gr-qc | null | It is generally argued that the combined effect of Heisenberg principle and
general relativity leads to a minimum time uncertainty. Most of the analyses
supporting this conclusion are based on a perturbative approach to
quantization. We consider a simple family of gravitational models, including
the Einstein-Rosen wa... | [
{
"created": "Fri, 21 Nov 2003 09:00:31 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Jan 2004 11:04:40 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"G.",
"J. Fernando Barbero",
""
],
[
"Marugan",
"Guillermo A. Mena",
""
],
[
"Villaseñor",
"Eduardo J. S.",
""
]
] | It is generally argued that the combined effect of Heisenberg principle and general relativity leads to a minimum time uncertainty. Most of the analyses supporting this conclusion are based on a perturbative approach to quantization. We consider a simple family of gravitational models, including the Einstein-Rosen wave... |
0707.3751 | Paul R. Anderson | Paul R. Anderson, Emil Mottola, and Ruslan Vaulin | Stress Tensor from the Trace Anomaly in Reissner-Nordstrom Spacetimes | 43 pages, 12 figures | Phys.Rev.D76:124028,2007 | 10.1103/PhysRevD.76.124028 | LA-UR 07-4898 | gr-qc | null | The effective action associated with the trace anomaly provides a general
algorithm for approximating the expectation value of the stress tensor of
conformal matter fields in arbitrary curved spacetimes. In static, spherically
symmetric spacetimes, the algorithm involves solving a fourth order linear
differential equ... | [
{
"created": "Wed, 25 Jul 2007 14:34:04 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Jul 2007 23:27:08 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Anderson",
"Paul R.",
""
],
[
"Mottola",
"Emil",
""
],
[
"Vaulin",
"Ruslan",
""
]
] | The effective action associated with the trace anomaly provides a general algorithm for approximating the expectation value of the stress tensor of conformal matter fields in arbitrary curved spacetimes. In static, spherically symmetric spacetimes, the algorithm involves solving a fourth order linear differential equat... |
2304.07595 | Christoph Schmid | Christoph Schmid | The Gravito-Maxwell Equations of General Relativity in the local
reference frame of a GR-noninertial observer | 19 pages | Classical and Quantum Gravity 40, 055005 (2023) | 10.1088/1361-6382/acb3a8 | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | We show that the acceleration-difference of neighboring free-falling
particles (= geodesic deviation) measured in the local reference frame of a
GR-noninertial observer is not given by the Riemann tensor. With the
gravito-electric field of GR defined as the acceleration of free-falling
quasistatic particles relative ... | [
{
"created": "Sat, 15 Apr 2023 17:03:16 GMT",
"version": "v1"
}
] | 2023-04-18 | [
[
"Schmid",
"Christoph",
""
]
] | We show that the acceleration-difference of neighboring free-falling particles (= geodesic deviation) measured in the local reference frame of a GR-noninertial observer is not given by the Riemann tensor. With the gravito-electric field of GR defined as the acceleration of free-falling quasistatic particles relative to... |
2107.04413 | Pratik P Ray Dr. | Pratik P. Ray, Sankarsan Tarai, B. Mishra and S. K. Tripathy | Cosmological models with Big rip and Pseudo rip Scenarios in extended
theory of gravity | 14 pages, 18 figures | Fortschr. Phys. 2021, 69, 2100086 | 10.1002/prop.202100086 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have presented the big rip and pseudo rip cosmological
models in an extended theory of gravity. The matter field is considered to be
that of perfect fluid. The geometrical parameters are adjusted in such a manner
that it matches the prescriptions given by cosmological observations, to be
specific to... | [
{
"created": "Wed, 7 Jul 2021 08:54:57 GMT",
"version": "v1"
}
] | 2022-07-19 | [
[
"Ray",
"Pratik P.",
""
],
[
"Tarai",
"Sankarsan",
""
],
[
"Mishra",
"B.",
""
],
[
"Tripathy",
"S. K.",
""
]
] | In this paper, we have presented the big rip and pseudo rip cosmological models in an extended theory of gravity. The matter field is considered to be that of perfect fluid. The geometrical parameters are adjusted in such a manner that it matches the prescriptions given by cosmological observations, to be specific to t... |
1705.00943 | David Kubiznak | Valeri P. Frolov, Pavel Krtous, David Kubiznak | Weakly charged generalized Kerr-NUT-(A)dS spacetimes | 4 pages, no figures v2: added references | Phys.Lett. B771 (2017) 254-256 | 10.1016/j.physletb.2017.05.041 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find an explicit solution of the source free Maxwell equations in a
generalized Kerr-NUT-(A)dS spacetime in all dimensions. This solution is
obtained as a linear combination of the closed conformal Killing-Yano tensor
$h_{ab}$, which is present in such a spacetime, and a derivative of the primary
Killing vector, a... | [
{
"created": "Tue, 2 May 2017 12:44:34 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Jun 2017 11:35:36 GMT",
"version": "v2"
}
] | 2017-06-06 | [
[
"Frolov",
"Valeri P.",
""
],
[
"Krtous",
"Pavel",
""
],
[
"Kubiznak",
"David",
""
]
] | We find an explicit solution of the source free Maxwell equations in a generalized Kerr-NUT-(A)dS spacetime in all dimensions. This solution is obtained as a linear combination of the closed conformal Killing-Yano tensor $h_{ab}$, which is present in such a spacetime, and a derivative of the primary Killing vector, ass... |
2205.05308 | Davide Batic | D. Batic and S.Chanda and P. Guha | Optical properties of null geodesics emerging from dynamical systems | 18 pages, 3 figures | European Journal of Physics C (2022) 82:422 | 10.1140/epjc/s10052-022-10392-z | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study optical metrics via null geodesics as a central force system, deduce
the related Binet equation and apply the analysis to certain solutions of
Einstein's equations with and without spherical symmetry. A general formula for
the deflection angle in the weak lensing regime for the
Schwarzschild-Tangherlini (ST)... | [
{
"created": "Wed, 11 May 2022 07:21:14 GMT",
"version": "v1"
}
] | 2022-05-12 | [
[
"Batic",
"D.",
""
],
[
"Chanda",
"S.",
""
],
[
"Guha",
"P.",
""
]
] | We study optical metrics via null geodesics as a central force system, deduce the related Binet equation and apply the analysis to certain solutions of Einstein's equations with and without spherical symmetry. A general formula for the deflection angle in the weak lensing regime for the Schwarzschild-Tangherlini (ST) m... |
1203.4770 | Karl\'ucio Castello-Branco | K. H. C. Castello-Branco and J. F. da Rocha-Neto | Gravitational energy of a magnetized Schwarzschild black hole - a
teleparallel approach | version to match the one to be published on General Relativity and
Gravitation | null | 10.1007/s10714-012-1437-1 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the distribution of gravitational energy on the spacetime of a
Schwarzschild black hole immersed in a cosmic magnetic field. This is done in
the context of the {\it Teleparallel Equivalent of General Relativity}, which
is an alternative geometrical formulation of General Relativity, where gravity
is de... | [
{
"created": "Wed, 21 Mar 2012 16:03:40 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Nov 2012 20:40:14 GMT",
"version": "v2"
}
] | 2012-11-06 | [
[
"Castello-Branco",
"K. H. C.",
""
],
[
"da Rocha-Neto",
"J. F.",
""
]
] | We investigate the distribution of gravitational energy on the spacetime of a Schwarzschild black hole immersed in a cosmic magnetic field. This is done in the context of the {\it Teleparallel Equivalent of General Relativity}, which is an alternative geometrical formulation of General Relativity, where gravity is desc... |
gr-qc/0412107 | John W. Barrett | John W. Barrett | Feynman loops and three-dimensional quantum gravity | approx 14 pages. v2: minor descriptive changes and added refs. v3:
minor corrections | Mod.Phys.Lett. A20 (2005) 1271 | 10.1142/S0217732305017743 | null | gr-qc hep-th math.QA | null | This paper explores the idea that within the framework of three-dimensional
quantum gravity one can extend the notion of Feynman diagram to include the
coupling of the particles in the diagram with quantum gravity. The paper
concentrates on the non-trivial part of the gravitational response, which is to
the large mom... | [
{
"created": "Tue, 21 Dec 2004 16:59:35 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Jan 2005 12:06:14 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Feb 2005 13:38:52 GMT",
"version": "v3"
}
] | 2016-12-21 | [
[
"Barrett",
"John W.",
""
]
] | This paper explores the idea that within the framework of three-dimensional quantum gravity one can extend the notion of Feynman diagram to include the coupling of the particles in the diagram with quantum gravity. The paper concentrates on the non-trivial part of the gravitational response, which is to the large momen... |
gr-qc/0506070 | Alessandro Nagar | Alessandro Nagar (Torino&Valencia), Jose A. Font (Valencia), Olindo
Zanotti (Valencia) and Roberto De Pietri (Parma) | Gravitational waves from oscillating accretion tori: Comparison between
different approaches | 6 pages and 3 figures, RevTex, accepted for publication in Phys. Rev.
D | Phys.Rev. D72 (2005) 024007 | 10.1103/PhysRevD.72.024007 | null | gr-qc astro-ph | null | Quasi-periodic oscillations of high density thick accretion disks orbiting a
Schwarzschild black hole have been recently addressed as interesting sources of
gravitational waves. The aim of this paper is to compare the gravitational
waveforms emitted from these sources when computed using (variations of) the
standard ... | [
{
"created": "Sat, 11 Jun 2005 14:58:31 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Nagar",
"Alessandro",
"",
"Torino&Valencia"
],
[
"Font",
"Jose A.",
"",
"Valencia"
],
[
"Zanotti",
"Olindo",
"",
"Valencia"
],
[
"De Pietri",
"Roberto",
"",
"Parma"
]
] | Quasi-periodic oscillations of high density thick accretion disks orbiting a Schwarzschild black hole have been recently addressed as interesting sources of gravitational waves. The aim of this paper is to compare the gravitational waveforms emitted from these sources when computed using (variations of) the standard qu... |
1804.01731 | Hayato Motohashi | Hayato Motohashi, Masato Minamitsuji | General Relativity solutions in modified gravity | 9 pages; version to appear in Phys.Lett. B | Phys.Lett. B781, 728-734 (2018) | 10.1016/j.physletb.2018.04.041 | YITP-18-27 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent gravitational wave observations of binary black hole mergers and a
binary neutron star merger by LIGO and Virgo Collaborations associated with its
optical counterpart constrain deviation from General Relativity (GR) both on
strong-field regime and cosmological scales with high accuracy, and further
strong cons... | [
{
"created": "Thu, 5 Apr 2018 08:29:02 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Jun 2018 14:13:07 GMT",
"version": "v2"
}
] | 2018-06-11 | [
[
"Motohashi",
"Hayato",
""
],
[
"Minamitsuji",
"Masato",
""
]
] | Recent gravitational wave observations of binary black hole mergers and a binary neutron star merger by LIGO and Virgo Collaborations associated with its optical counterpart constrain deviation from General Relativity (GR) both on strong-field regime and cosmological scales with high accuracy, and further strong constr... |
1809.01482 | Eckhard Rebhan | Rebhan Eckhard | Acceleration of cosmic expansion through huge cosmological constant
progressively reduced by submicroscopic information transfer | 26 pages, 5 figures | Int. J. Mod. Phys. A, Vol. 33, No. 23 (2018) 1850137 (21 pages),
copyright World Scientific Publishing Company | 10.1142/S0217751X18501373 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a previous paper (Ref. [1]) the presence of dark energy in our universe
was explained as the fingerprint of a comprehensive, much older and expanding
multiverse with positive spatial curvature, whose space-time is spanned by this
energy, and which was created out of nothing. This concept is expanded by the
additio... | [
{
"created": "Wed, 5 Sep 2018 13:21:14 GMT",
"version": "v1"
}
] | 2018-09-06 | [
[
"Eckhard",
"Rebhan",
""
]
] | In a previous paper (Ref. [1]) the presence of dark energy in our universe was explained as the fingerprint of a comprehensive, much older and expanding multiverse with positive spatial curvature, whose space-time is spanned by this energy, and which was created out of nothing. This concept is expanded by the addition ... |
2107.03456 | Valerio Faraoni | Valerio Faraoni and Alexandre Leblanc | Disformal mappings of spherical DHOST geometries | 20 pages, no figures. Typographical errors corrected and references
added, matches the version to appear in JCAP | null | 10.1088/1475-7516/2021/08/037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | New solutions of DHOST theories can be generated by applying a disformal
tranformation to a known seed solution. We examine the nature of spherically
symmetric solutions of DHOST gravity obtained by disforming static spherical
scalar field solutions, or stealth solutions, of general relativity. It is
shown that, in t... | [
{
"created": "Wed, 7 Jul 2021 19:35:47 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jul 2021 17:01:10 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Jul 2021 12:16:20 GMT",
"version": "v3"
}
] | 2021-08-25 | [
[
"Faraoni",
"Valerio",
""
],
[
"Leblanc",
"Alexandre",
""
]
] | New solutions of DHOST theories can be generated by applying a disformal tranformation to a known seed solution. We examine the nature of spherically symmetric solutions of DHOST gravity obtained by disforming static spherical scalar field solutions, or stealth solutions, of general relativity. It is shown that, in the... |
1611.03100 | Mariam Bouhmadi-Lopez | Mariam Bouhmadi-L\'opez, Jo\~ao Marto, Jo\~ao Morais, C\'esar M. Silva | Cosmic infinity: A dynamical system approach | 19 pages, 9 figures, 3 tables. A new section added. Explanations
improved. Version accepted in JCAP | JCAP 03 (2017) 042 | 10.1088/1475-7516/2017/03/042 | null | gr-qc hep-ph hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamical system techniques are extremely useful to study cosmology. It turns
out that in most of the cases, we deal with finite isolated fixed points
corresponding to a given cosmological epoch. However, it is equally important
to analyse the asymptotic behaviour of the universe. On this paper, we show how
this can ... | [
{
"created": "Wed, 9 Nov 2016 21:32:35 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Mar 2017 18:29:45 GMT",
"version": "v2"
}
] | 2017-03-22 | [
[
"Bouhmadi-López",
"Mariam",
""
],
[
"Marto",
"João",
""
],
[
"Morais",
"João",
""
],
[
"Silva",
"César M.",
""
]
] | Dynamical system techniques are extremely useful to study cosmology. It turns out that in most of the cases, we deal with finite isolated fixed points corresponding to a given cosmological epoch. However, it is equally important to analyse the asymptotic behaviour of the universe. On this paper, we show how this can be... |
0908.0799 | Ken-Ichi Nakao | Ken-ichi Nakao, Hiroyuki Abe, Hirotaka Yoshino, Masaru Shibata | Maximal slicing of D-dimensional spherically-symmetric vacuum spacetime | 20 pages, 8 figures | Phys.Rev.D80:084028,2009 | 10.1103/PhysRevD.80.084028 | OCU-PHYS-317, AP-GR-69 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the foliation of a $D$-dimensional spherically symmetric black-hole
spacetime with $D\ge 5$ by two kinds of one-parameter family of maximal
hypersurfaces: a reflection-symmetric foliation with respect to the wormhole
slot and a stationary foliation that has an infinitely long trumpet-like shape.
As in the fo... | [
{
"created": "Thu, 6 Aug 2009 05:47:38 GMT",
"version": "v1"
}
] | 2010-03-25 | [
[
"Nakao",
"Ken-ichi",
""
],
[
"Abe",
"Hiroyuki",
""
],
[
"Yoshino",
"Hirotaka",
""
],
[
"Shibata",
"Masaru",
""
]
] | We study the foliation of a $D$-dimensional spherically symmetric black-hole spacetime with $D\ge 5$ by two kinds of one-parameter family of maximal hypersurfaces: a reflection-symmetric foliation with respect to the wormhole slot and a stationary foliation that has an infinitely long trumpet-like shape. As in the four... |
1510.07967 | Alexander Kamenshchik | I.M. Khalatnikov and A.Yu. Kamenshchik | Stochastic cosmology, theories of perturbations and Lifshitz gravity | 30 pages, to appear in Physics - Uspekhi. arXiv admin note: text
overlap with arXiv:0901.3775 by other authors | null | 10.3367/UFNe.0185.201509f.0948 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review some works of E M Lifshitz connected with gravity and cosmology and
also some later works, connected with his ideas. The main topics of this review
are the stochastic cosmology of an anisotropic universe and of an isotropic
universe with the scalar field, the quasi-isotropic (gradient) expansion in
cosmolog... | [
{
"created": "Tue, 27 Oct 2015 16:22:30 GMT",
"version": "v1"
}
] | 2016-01-20 | [
[
"Khalatnikov",
"I. M.",
""
],
[
"Kamenshchik",
"A. Yu.",
""
]
] | We review some works of E M Lifshitz connected with gravity and cosmology and also some later works, connected with his ideas. The main topics of this review are the stochastic cosmology of an anisotropic universe and of an isotropic universe with the scalar field, the quasi-isotropic (gradient) expansion in cosmology ... |
gr-qc/9511046 | Masafumi Seriu | Masafumi Seriu (Yukawa Institute for Theoretical Physics) | Back-Reaction on the Topological Degrees of Freedom in (2+1)-Dimensional
Spacetime | 42 pages, phyzzx.tex, Figures will be sent on request | Phys.Rev. D53 (1996) 1889-1906 | 10.1103/PhysRevD.53.1889 | YITP-95-10 | gr-qc | null | We investigate the back-reaction effect of the quantum field on the
topological degrees of freedom in (2+1)-dimensional toroidal universe, ${\cal
M} \simeq T^2\times {\bf R}$. Constructing a homogeneous model of the toroidal
universe, we examine explicitly the back-reaction effect of the Casimir energy
of a massless,... | [
{
"created": "Thu, 16 Nov 1995 09:07:18 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Seriu",
"Masafumi",
"",
"Yukawa Institute for Theoretical Physics"
]
] | We investigate the back-reaction effect of the quantum field on the topological degrees of freedom in (2+1)-dimensional toroidal universe, ${\cal M} \simeq T^2\times {\bf R}$. Constructing a homogeneous model of the toroidal universe, we examine explicitly the back-reaction effect of the Casimir energy of a massless, c... |
gr-qc/0208016 | Leonid V. Verozub | L.V. Verozub | Space-Based Gravity Detector for a Space Laboratory | 4 pages, 4 figures, LaTex2e, Iopart.cls | Class.Quant.Grav. 17 (2000) 2455-2458 | 10.1088/0264-9381/17/12/317 | null | gr-qc | null | A space-based superconducting gravitational low-frequency wave detector is
considered. Sensitivity of the detector is sufficient to use the detector as a
partner of other contemporary low-frequency detectors like LIGO and LISA. This
device can also be very useful for experimental study of other effects
predicted by t... | [
{
"created": "Wed, 7 Aug 2002 04:22:56 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Verozub",
"L. V.",
""
]
] | A space-based superconducting gravitational low-frequency wave detector is considered. Sensitivity of the detector is sufficient to use the detector as a partner of other contemporary low-frequency detectors like LIGO and LISA. This device can also be very useful for experimental study of other effects predicted by the... |
gr-qc/9710040 | Maurice van Putten | Maurice H.P.M. van Putten (MIT) | Nonlinear wave equations for numerical relativity: towards the
computation of gravitational wave forms of black hole binaries | 3 pages LaTex (mprocl.sty). To appear in the proceedings of the
Eighth Marcel Grossmann Conference on General Relativity (Jerusalem, Israel,
June 1997) | null | null | null | gr-qc astro-ph | null | The prime candidate of LIGO/VIRGO sources of gravitational waves is the
spiral in of black holes and neutron stars in compact binaries. While the early
stages of the evolution of compact binaries is computable from post-Newtonian
calculations, prediction of their late stages requires large scale numerical
simulation.... | [
{
"created": "Tue, 7 Oct 1997 18:01:34 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"van Putten",
"Maurice H. P. M.",
"",
"MIT"
]
] | The prime candidate of LIGO/VIRGO sources of gravitational waves is the spiral in of black holes and neutron stars in compact binaries. While the early stages of the evolution of compact binaries is computable from post-Newtonian calculations, prediction of their late stages requires large scale numerical simulation. A... |
2209.05450 | Anna Heffernan | Anna Heffernan | Self-force regularization of a point particle for generic orbits in Kerr
spacetime: electromagnetic and gravitational cases | 11 pages | null | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The self-force is the leading method in modelling waveforms for extreme mass
ratio inspirals, a key target of ESA's future space-based gravitational wave
detector LISA. In modelling these systems, one approximates the smaller body as
a point particle leading to problematic singularities that need to be removed.
Model... | [
{
"created": "Mon, 12 Sep 2022 17:51:00 GMT",
"version": "v1"
}
] | 2022-09-13 | [
[
"Heffernan",
"Anna",
""
]
] | The self-force is the leading method in modelling waveforms for extreme mass ratio inspirals, a key target of ESA's future space-based gravitational wave detector LISA. In modelling these systems, one approximates the smaller body as a point particle leading to problematic singularities that need to be removed. Modelli... |
2307.04027 | Giuseppe Gaetano Luciano Dr | Gaetano Lambiase, Giuseppe Gaetano Luciano and Ahmad Sheykhi | Slow-roll inflation and growth of perturbations in Kaniadakis
modification of Friedmann cosmology | Discussion added on the primordial power spectrum for scalar
perturbations | Eur.Phys.J.C 83 (2023) 10, 936 | 10.1140/epjc/s10052-023-12112-7 | null | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | Kaniadakis entropy is a one-parameter deformation of the classical
Boltzmann-Gibbs-Shannon entropy, arising from a self-consistent relativistic
statistical theory. Assuming a Kaniadakis-type generalization of the entropy
associated with the apparent horizon of Friedmann-Robertson-Walker (FRW)
Universe and using the g... | [
{
"created": "Sat, 8 Jul 2023 18:29:51 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Nov 2023 08:45:06 GMT",
"version": "v2"
},
{
"created": "Wed, 8 Nov 2023 09:46:27 GMT",
"version": "v3"
}
] | 2023-11-09 | [
[
"Lambiase",
"Gaetano",
""
],
[
"Luciano",
"Giuseppe Gaetano",
""
],
[
"Sheykhi",
"Ahmad",
""
]
] | Kaniadakis entropy is a one-parameter deformation of the classical Boltzmann-Gibbs-Shannon entropy, arising from a self-consistent relativistic statistical theory. Assuming a Kaniadakis-type generalization of the entropy associated with the apparent horizon of Friedmann-Robertson-Walker (FRW) Universe and using the gra... |
gr-qc/0102042 | Gregory Mendell | Gregory Mendell | Magnetic effects on the viscous boundary layer damping of the r-modes in
neutron stars | 10 pages, 4 figures, revtex | Phys.Rev. D64 (2001) 044009 | 10.1103/PhysRevD.64.044009 | null | gr-qc astro-ph | null | This paper explores the effects that magnetic fields have on the viscous
boundary layers (VBLs) that can form in neutron stars at the crust-core
interface, and it investigates the VBL damping of the gravitational-radiation
driven r-mode instability. Approximate solutions to the magnetohydrodynamic
equations valid in ... | [
{
"created": "Fri, 9 Feb 2001 22:23:54 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Mendell",
"Gregory",
""
]
] | This paper explores the effects that magnetic fields have on the viscous boundary layers (VBLs) that can form in neutron stars at the crust-core interface, and it investigates the VBL damping of the gravitational-radiation driven r-mode instability. Approximate solutions to the magnetohydrodynamic equations valid in th... |
gr-qc/9504003 | Alex Ridgway | S. Alexander Ridgway and Erick J. Weinberg (Columbia University) | Are All Static Black Hole Solutions Spherically Symmetric? | 6 pages, plain TeX. Submitted to GRF Essay Competition | Gen.Rel.Grav.27:1017-1021,1995 | 10.1007/BF02148644 | CU-TP-688 | gr-qc | null | The static black hole solutions to the Einstein-Maxwell equations are all
spherically symmetric, as are many of the recently discovered black hole
solutions in theories of gravity coupled to other forms of matter. However,
counterexamples demonstrating that static black holes need not be spherically
symmetric exist i... | [
{
"created": "Tue, 4 Apr 1995 20:06:53 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Ridgway",
"S. Alexander",
"",
"Columbia University"
],
[
"Weinberg",
"Erick J.",
"",
"Columbia University"
]
] | The static black hole solutions to the Einstein-Maxwell equations are all spherically symmetric, as are many of the recently discovered black hole solutions in theories of gravity coupled to other forms of matter. However, counterexamples demonstrating that static black holes need not be spherically symmetric exist in ... |
2211.03167 | Puskar Mondal | Puskar Mondal, Shing-Tung Yau | Global exterior stability of the Minkowski space: coupled
Einstein-Yang-Mills perturbations | 57 pages, continuation of the earlier work arXiv:2205.01101 (based on
this framework) | null | null | null | gr-qc math-ph math.AP math.MP | http://creativecommons.org/licenses/by/4.0/ | Here we prove a global gauge-invariant radiation estimates for the
perturbations of the $3+1$ dimensional Minkowski spacetime in the presence of
Yang-Mills sources. In particular, we obtain a novel gauge invariant estimate
for the Yang-Mills fields coupled to gravity in a double null framework in the
Causal complemen... | [
{
"created": "Sun, 6 Nov 2022 16:20:32 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Oct 2023 20:07:24 GMT",
"version": "v2"
},
{
"created": "Wed, 10 Apr 2024 02:14:01 GMT",
"version": "v3"
},
{
"created": "Wed, 15 May 2024 03:19:08 GMT",
"version": "v4"
}
] | 2024-05-16 | [
[
"Mondal",
"Puskar",
""
],
[
"Yau",
"Shing-Tung",
""
]
] | Here we prove a global gauge-invariant radiation estimates for the perturbations of the $3+1$ dimensional Minkowski spacetime in the presence of Yang-Mills sources. In particular, we obtain a novel gauge invariant estimate for the Yang-Mills fields coupled to gravity in a double null framework in the Causal complement ... |
gr-qc/9810034 | Tonatiuh Matos | Tonatiuh Matos (cinvestav-Mexico) | The Interior Field of a Magnetized Einstein-Maxwell Object | 4 pages, latex, no figures | Phys.Lett. A249 (1998) 271-274 | 10.1016/S0375-9601(98)00775-0 | CIEA-FIS-98/28 | gr-qc | null | Using the Harmonic map ansatz, we reduce the axisymmetric, static
Einstein-Maxwell equations coupled with a magnetized perfect fluid to a set of
Poisson-like equations. We were able to integrate the Poisson equations in
terms of an arbitrary function $M=M(\rho,\zeta)$ and some integration
constants. The thermodynamic... | [
{
"created": "Fri, 9 Oct 1998 19:33:57 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Matos",
"Tonatiuh",
"",
"cinvestav-Mexico"
]
] | Using the Harmonic map ansatz, we reduce the axisymmetric, static Einstein-Maxwell equations coupled with a magnetized perfect fluid to a set of Poisson-like equations. We were able to integrate the Poisson equations in terms of an arbitrary function $M=M(\rho,\zeta)$ and some integration constants. The thermodynamic e... |
1811.00339 | Xing Zhang | Xing Zhang, Wen Zhao, Tan Liu, Kai Lin, Chao Zhang, Xiang Zhao,
Shaojun Zhang, Tao Zhu, Anzhong Wang | Angular momentum loss for eccentric compact binary in screened modified
gravity | 13 pages, 1 figure | JCAP01(2019)019 | 10.1088/1475-7516/2019/01/019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave (GW) observations provide insight into the gravity regime.
These observations relies on the comparison of the data to the GWs model, which
depends on the orbital evolution of the binary systems. In this paper, we study
the orbital evolution of eccentric compact binaries within screened modified
gra... | [
{
"created": "Thu, 1 Nov 2018 12:24:09 GMT",
"version": "v1"
}
] | 2019-01-09 | [
[
"Zhang",
"Xing",
""
],
[
"Zhao",
"Wen",
""
],
[
"Liu",
"Tan",
""
],
[
"Lin",
"Kai",
""
],
[
"Zhang",
"Chao",
""
],
[
"Zhao",
"Xiang",
""
],
[
"Zhang",
"Shaojun",
""
],
[
"Zhu",
"Tao",
""
]... | Gravitational wave (GW) observations provide insight into the gravity regime. These observations relies on the comparison of the data to the GWs model, which depends on the orbital evolution of the binary systems. In this paper, we study the orbital evolution of eccentric compact binaries within screened modified gravi... |
1808.05259 | Anirban Chatterjee | Abhijit Bandyopadhyay and Anirban Chatterjee | Diffusive dark matter and dark energy scenario and $k-$essence in the
context of Supernova Ia observations | 14 pages, 4 figures | Eur. Phys. J. Plus (2019)134: 174 | 10.1140/epjp/i2019-12587-0 | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | We consider a unified model of interacting dark matter and dark energy to
account for coincidence of present day dark energy and dark matter densities.
We assume dark energy to be represented by a homogeneous scalar field $\phi$
whose dynamics is driven by a (non-canonical) $k$-essence Lagrangian with
constant potent... | [
{
"created": "Wed, 15 Aug 2018 19:12:41 GMT",
"version": "v1"
}
] | 2019-04-29 | [
[
"Bandyopadhyay",
"Abhijit",
""
],
[
"Chatterjee",
"Anirban",
""
]
] | We consider a unified model of interacting dark matter and dark energy to account for coincidence of present day dark energy and dark matter densities. We assume dark energy to be represented by a homogeneous scalar field $\phi$ whose dynamics is driven by a (non-canonical) $k$-essence Lagrangian with constant potentia... |
2009.09436 | P. A. Gonzalez | Almendra Arag\'on, Ram\'on B\'ecar, P. A. Gonz\'alez, Yerko V\'asquez | Massive Dirac quasinormal modes in Schwarzschild-dS black holes:
anomalous decay rate and fine structure | Version accepted for publication in PRD | Phys. Rev. D 103, 064006 (2021) | 10.1103/PhysRevD.103.064006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, the anomalous decay rate of quasinormal modes has been studied for
some geometries under scalar field perturbations, which occurs when the
longest-lived modes are the ones with higher angular number, as well as, the
existence of a critical scalar field mass, i.e the value of scalar field mass
such that the ... | [
{
"created": "Sun, 20 Sep 2020 14:13:48 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Feb 2021 17:10:20 GMT",
"version": "v2"
}
] | 2021-03-10 | [
[
"Aragón",
"Almendra",
""
],
[
"Bécar",
"Ramón",
""
],
[
"González",
"P. A.",
""
],
[
"Vásquez",
"Yerko",
""
]
] | Recently, the anomalous decay rate of quasinormal modes has been studied for some geometries under scalar field perturbations, which occurs when the longest-lived modes are the ones with higher angular number, as well as, the existence of a critical scalar field mass, i.e the value of scalar field mass such that the de... |
1404.2085 | Vasiliy P. Neznamov | M.V. Gorbatenko, V.P. Neznamov | Analysis of the quantum-mechanical equivalence of the metrics of a
centrally symmetric uncharged gravitational field | 31 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the paper we analyze the quantum-mechanical equivalence of the metrics of
a centrally symmetric uncharged gravitational field. We consider the
Schwarzschild metrics in the spherical, isotropic and harmonic coordinates, and
the Eddington-Finkelstein, Painleve-Gullstrand, Lemaitre-Finkelstein, Kruskal
metrics. The s... | [
{
"created": "Tue, 8 Apr 2014 10:51:53 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Aug 2014 13:52:19 GMT",
"version": "v2"
},
{
"created": "Sat, 8 Nov 2014 11:41:09 GMT",
"version": "v3"
}
] | 2014-11-11 | [
[
"Gorbatenko",
"M. V.",
""
],
[
"Neznamov",
"V. P.",
""
]
] | In the paper we analyze the quantum-mechanical equivalence of the metrics of a centrally symmetric uncharged gravitational field. We consider the Schwarzschild metrics in the spherical, isotropic and harmonic coordinates, and the Eddington-Finkelstein, Painleve-Gullstrand, Lemaitre-Finkelstein, Kruskal metrics. The sco... |
1512.05650 | Brennan Ireland | Brennan Ireland, Bruno C. Mundim, Hiroyuki Nakano, Manuela Campanelli | Inspiralling, Non-Precessing, Spinning Black Hole Binary Spacetime via
Asymptotic Matching | 21 pages, 15 figures, revtex 4.1 | Phys. Rev. D 93, 104057 (2016) | 10.1103/PhysRevD.93.104057 | null | gr-qc astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a new global, fully analytic, approximate spacetime which
accurately describes the dynamics of non-precessing, spinning black hole
binaries during the inspiral phase of the relativistic merger process. This
approximate solution of the vacuum Einstein's equations can be obtained by
asymptotically matching... | [
{
"created": "Thu, 17 Dec 2015 16:09:45 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Mar 2016 20:42:04 GMT",
"version": "v2"
}
] | 2016-06-01 | [
[
"Ireland",
"Brennan",
""
],
[
"Mundim",
"Bruno C.",
""
],
[
"Nakano",
"Hiroyuki",
""
],
[
"Campanelli",
"Manuela",
""
]
] | We construct a new global, fully analytic, approximate spacetime which accurately describes the dynamics of non-precessing, spinning black hole binaries during the inspiral phase of the relativistic merger process. This approximate solution of the vacuum Einstein's equations can be obtained by asymptotically matching p... |
1611.08972 | Aaron Levy | Aaron M. Levy | Fine-tuning challenges for the matter bounce scenario | 6 pages, 3 figures | Phys. Rev. D 95, 023522 (2017) | 10.1103/PhysRevD.95.023522 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A bouncing universe with a long period of contraction during which the
average density is pressureless (the same equation of state as matter) as
cosmologically observable scales exit the Hubble horizon has been proposed as
an explanation for producing a nearly scale-invariant spectrum of adiabatic
scalar perturbation... | [
{
"created": "Mon, 28 Nov 2016 03:37:17 GMT",
"version": "v1"
}
] | 2017-02-08 | [
[
"Levy",
"Aaron M.",
""
]
] | A bouncing universe with a long period of contraction during which the average density is pressureless (the same equation of state as matter) as cosmologically observable scales exit the Hubble horizon has been proposed as an explanation for producing a nearly scale-invariant spectrum of adiabatic scalar perturbations.... |
1311.1798 | Bianca Dittrich | Bianca Dittrich, Wojciech Kaminski | Topological lattice field theories from intertwiner dynamics | 35+9 pages | null | null | null | gr-qc cond-mat.str-el math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a class of 2D lattice models that describe the dynamics of
intertwiners, or, in a condensed matter interpretation, the fusion and
splitting of anyons. We identify different families and instances of
triangulation invariant, that is, topological, models inside this class. These
models give examples for sy... | [
{
"created": "Thu, 7 Nov 2013 20:11:16 GMT",
"version": "v1"
}
] | 2013-11-08 | [
[
"Dittrich",
"Bianca",
""
],
[
"Kaminski",
"Wojciech",
""
]
] | We introduce a class of 2D lattice models that describe the dynamics of intertwiners, or, in a condensed matter interpretation, the fusion and splitting of anyons. We identify different families and instances of triangulation invariant, that is, topological, models inside this class. These models give examples for symm... |
gr-qc/9809076 | Walter Simon | Marc Mars, Walter Simon | A Proof of Uniqueness of the Taub-bolt Instanton | 20 pages. LaTeX. Substantially extended and corrected | Journal of Geometry and Physics 32 (1999) 211-226 | 10.1016/S0393-0440(99)00023-6 | null | gr-qc math-ph math.DG math.MP | null | We show that the Riemannian Schwarzschild and the ``Taub-bolt'' instanton
solutions are the only spaces (M,g) such that
1) M is a 4-dimensional, simply connected manifold with a Riemannian,
Ricci-flat C^2-metric g which admits (at least) a 1-parameter group of
isometries H without isolated fixed points on M.
2) T... | [
{
"created": "Mon, 28 Sep 1998 08:47:06 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Feb 2000 16:07:24 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Mars",
"Marc",
""
],
[
"Simon",
"Walter",
""
]
] | We show that the Riemannian Schwarzschild and the ``Taub-bolt'' instanton solutions are the only spaces (M,g) such that 1) M is a 4-dimensional, simply connected manifold with a Riemannian, Ricci-flat C^2-metric g which admits (at least) a 1-parameter group of isometries H without isolated fixed points on M. 2) The quo... |
1503.08415 | Plyatsko Roman | Roman Plyatsko and Mykola Fenyk | Highly relativistic spin-gravity coupling for fermions | 6 pages | Physical Review D 91, 064033 (2015) | 10.1103/PhysRevD.91.064033 | null | gr-qc astro-ph.HE hep-ex hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Descriptions of highly relativistic fermions in a gravitational field in the
classical (nonquantum) and quantum approaches are discussed. The results
following from the Mathisson-Papapetrou equations for a fast spinning particle
in Schwarzschild's and Kerr's background are considered. Numerical estimates
for electron... | [
{
"created": "Sun, 29 Mar 2015 10:19:09 GMT",
"version": "v1"
}
] | 2015-06-24 | [
[
"Plyatsko",
"Roman",
""
],
[
"Fenyk",
"Mykola",
""
]
] | Descriptions of highly relativistic fermions in a gravitational field in the classical (nonquantum) and quantum approaches are discussed. The results following from the Mathisson-Papapetrou equations for a fast spinning particle in Schwarzschild's and Kerr's background are considered. Numerical estimates for electron, ... |
0905.0819 | Michael Bebronne | Michael V. Bebronne | Anti-gravity and/or dark matter contributions from massive gravity | To appear in the proceedings of the Rencontres de Moriond EW 2009 | null | null | ULB-TH/09-11 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, the static spherically symmetric solution of the gravitational
field equations have been found in theories describing massive graviton with
spontaneous breaking of the Lorentz invariance. These solutions, which show off
two integration constants instead of one in General Relativity, are discussed.
They are ... | [
{
"created": "Wed, 6 May 2009 12:24:42 GMT",
"version": "v1"
}
] | 2009-05-07 | [
[
"Bebronne",
"Michael V.",
""
]
] | Recently, the static spherically symmetric solution of the gravitational field equations have been found in theories describing massive graviton with spontaneous breaking of the Lorentz invariance. These solutions, which show off two integration constants instead of one in General Relativity, are discussed. They are ca... |
1311.4898 | Laura Sampson | Laura Sampson, Neil Cornish, and Nicolas Yunes | Mis-Modelling in Gravitational Wave Astronomy: The Trouble With
Templates | 13 pages, 16 figures. Modified in response to referee comments | Phys. Rev. D 89, 064037 (2014) | 10.1103/PhysRevD.89.064037 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Waveform templates are a powerful tool for extracting and characterizing
gravitational wave signals, acting as highly restrictive priors on the signal
morphologies that allow us to extract weak events buried deep in the
instrumental noise. The templates map the waveform shapes to physical
parameters, thus allowing us... | [
{
"created": "Tue, 19 Nov 2013 21:38:35 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Mar 2014 21:14:35 GMT",
"version": "v2"
}
] | 2014-03-26 | [
[
"Sampson",
"Laura",
""
],
[
"Cornish",
"Neil",
""
],
[
"Yunes",
"Nicolas",
""
]
] | Waveform templates are a powerful tool for extracting and characterizing gravitational wave signals, acting as highly restrictive priors on the signal morphologies that allow us to extract weak events buried deep in the instrumental noise. The templates map the waveform shapes to physical parameters, thus allowing us t... |
1408.1270 | Tomohiro Inagaki | Tomohiro Inagaki, Ryota Nakanishi and Sergei D. Odintsov | Inflationary Parameters in Renormalization Group Improved $\phi^4$
Theory | 10 pages, 6 figures, Published version | null | 10.1007/s10509-014-2108-3 | HUPD-1401 | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inflation models can be examined by the cosmological observations, WMAP,
Planck, BICEP2 and so on. These observations directly constrain the spectral
index, $n_s$, and the tensor-to-scalar ratio, $r$. Besides, from a theoretical
point of view, it has been shown that any inflation models asymptote a
universal attracto... | [
{
"created": "Wed, 6 Aug 2014 13:11:39 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Aug 2014 05:20:49 GMT",
"version": "v2"
}
] | 2015-06-22 | [
[
"Inagaki",
"Tomohiro",
""
],
[
"Nakanishi",
"Ryota",
""
],
[
"Odintsov",
"Sergei D.",
""
]
] | Inflation models can be examined by the cosmological observations, WMAP, Planck, BICEP2 and so on. These observations directly constrain the spectral index, $n_s$, and the tensor-to-scalar ratio, $r$. Besides, from a theoretical point of view, it has been shown that any inflation models asymptote a universal attractor ... |
gr-qc/0305089 | Edward Teo | Kenneth Hong and Edward Teo | A new form of the C-metric | 12 pages, 1 LaTeX figure; references added | Class.Quant.Grav. 20 (2003) 3269-3277 | 10.1088/0264-9381/20/14/321 | null | gr-qc | null | The usual form of the C-metric has the structure function
G(\xi)=1-\xi^2-2mA\xi^3, whose cubic nature can make calculations cumbersome,
especially when explicit expressions for its roots are required. In this paper,
we propose a new form of the C-metric, with the explicitly factorisable
structure function G(\xi)=(1-\... | [
{
"created": "Fri, 23 May 2003 05:53:47 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Jun 2003 14:25:09 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Hong",
"Kenneth",
""
],
[
"Teo",
"Edward",
""
]
] | The usual form of the C-metric has the structure function G(\xi)=1-\xi^2-2mA\xi^3, whose cubic nature can make calculations cumbersome, especially when explicit expressions for its roots are required. In this paper, we propose a new form of the C-metric, with the explicitly factorisable structure function G(\xi)=(1-\xi... |
gr-qc/0007086 | Nikolaos Stergioulas | Nikolaos Stergioulas, Jose A. Font | Nonlinear r-modes in Rapidly Rotating Relativistic Stars | 4 pages, 4 eps figures, accepted in Physical Review Letters | Phys.Rev.Lett.86:1148-1151,2001 | 10.1103/PhysRevLett.86.1148 | null | gr-qc astro-ph | null | The r-mode instability in rotating relativistic stars has been shown recently
to have important astrophysical implications (including the emission of
detectable gravitational radiation, the explanation of the initial spins of
young neutron stars and the spin-distribution of millisecond pulsars and the
explanation of ... | [
{
"created": "Mon, 31 Jul 2000 19:08:10 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Dec 2000 16:21:08 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Stergioulas",
"Nikolaos",
""
],
[
"Font",
"Jose A.",
""
]
] | The r-mode instability in rotating relativistic stars has been shown recently to have important astrophysical implications (including the emission of detectable gravitational radiation, the explanation of the initial spins of young neutron stars and the spin-distribution of millisecond pulsars and the explanation of on... |
2405.20966 | Franciele Manoel da Silva | Franciele M. da Silva, Luis C. N. Santos and V. B. Bezerra | Black hole solutions surrounded by anisotropic fluid in
$f(\mathbb{T},\CMcal{T})$ gravity | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work, we investigate some extensions of the Kiselev black hole
solutions in the context of $f(\mathbb{T},\CMcal{T})$ gravity. By mapping the
components of the Kiselev energy-momentum tensor into the anisotropic
energy-momentum tensor and assuming a particular form of
$f(\mathbb{T},\CMcal{T})$, we obtain exact... | [
{
"created": "Fri, 31 May 2024 16:13:33 GMT",
"version": "v1"
}
] | 2024-06-03 | [
[
"da Silva",
"Franciele M.",
""
],
[
"Santos",
"Luis C. N.",
""
],
[
"Bezerra",
"V. B.",
""
]
] | In this work, we investigate some extensions of the Kiselev black hole solutions in the context of $f(\mathbb{T},\CMcal{T})$ gravity. By mapping the components of the Kiselev energy-momentum tensor into the anisotropic energy-momentum tensor and assuming a particular form of $f(\mathbb{T},\CMcal{T})$, we obtain exact s... |
0712.0607 | Stephan Schlamminger | S. Schlamminger, K.-Y. Choi, T. A. Wagner, J. H. Gundlach, E. G.
Adelberger | Test of the Equivalence Principle Using a Rotating Torsion Balance | 4 pages, 4 figures; accepted for publication in PRL | Phys.Rev.Lett.100:041101,2008 | 10.1103/PhysRevLett.100.041101 | null | gr-qc | null | We used a continuously rotating torsion balance instrument to measure the
acceleration difference of beryllium and titanium test bodies towards sources
at a variety of distances. Our result Delta a=(0.6+/-3.1)x10^-15 m/s^2 improves
limits on equivalence-principle violations with ranges from 1 m to infinity by
an orde... | [
{
"created": "Tue, 4 Dec 2007 20:50:21 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Schlamminger",
"S.",
""
],
[
"Choi",
"K. -Y.",
""
],
[
"Wagner",
"T. A.",
""
],
[
"Gundlach",
"J. H.",
""
],
[
"Adelberger",
"E. G.",
""
]
] | We used a continuously rotating torsion balance instrument to measure the acceleration difference of beryllium and titanium test bodies towards sources at a variety of distances. Our result Delta a=(0.6+/-3.1)x10^-15 m/s^2 improves limits on equivalence-principle violations with ranges from 1 m to infinity by an order ... |
gr-qc/0504124 | David H. Oaknin | David H. Oaknin | Acoustic peaks in the CMB: a matter of standard causal boundary
conditions on primordial density anisotropies | null | null | null | null | gr-qc | null | The pattern of acoustic peaks in the sub-horizon power spectrum of primordial
density anisotropies at recombination can be naturally understood in the
framework of standard Friedmann-Robertson-Walker cosmology (without inflation)
as a consequence of the boundary conditions imposed by the causal horizon on
the statist... | [
{
"created": "Mon, 25 Apr 2005 16:29:02 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Oaknin",
"David H.",
""
]
] | The pattern of acoustic peaks in the sub-horizon power spectrum of primordial density anisotropies at recombination can be naturally understood in the framework of standard Friedmann-Robertson-Walker cosmology (without inflation) as a consequence of the boundary conditions imposed by the causal horizon on the statistic... |
0809.4218 | Stephen P. Boughn | Stephen Boughn | Nonquantum Gravity | essentially the same as the version that appears in Foundations of
Physics, 39, 331 (2009) | Found.Phys.39:331-351,2009 | 10.1007/s10701-009-9282-0 | null | gr-qc astro-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the great challenges for 21st century physics is to quantize gravity
and generate a theory that will unify gravity with the other three fundamental
forces of nature. This paper takes the (heretical) point of view that gravity
may be an inherently classical, i.e., nonquantum, phenomenon and investigates
the exp... | [
{
"created": "Wed, 24 Sep 2008 16:02:39 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Dec 2008 00:53:45 GMT",
"version": "v2"
},
{
"created": "Wed, 8 Apr 2009 20:48:30 GMT",
"version": "v3"
}
] | 2009-04-17 | [
[
"Boughn",
"Stephen",
""
]
] | One of the great challenges for 21st century physics is to quantize gravity and generate a theory that will unify gravity with the other three fundamental forces of nature. This paper takes the (heretical) point of view that gravity may be an inherently classical, i.e., nonquantum, phenomenon and investigates the exper... |
2203.04375 | Jafar Sadeghi | J. Sadeghi, S Noori Gashti and T. Azizi | Tsallis and Kaniadakis holographic dark energy with Complex Quintessence
theory in Brans-Dicke cosmology | 26 pages, 9 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, by considering the complex form of the quintessence model, we
study two different dynamic structures of holographic dark energy as Tsallis
and Kaniadakis in the framework Brans-Dicke cosmology. In each setup, we employ
non-interacting and interacting cases and calculate some cosmological
parameters suc... | [
{
"created": "Tue, 8 Mar 2022 20:00:26 GMT",
"version": "v1"
}
] | 2022-03-10 | [
[
"Sadeghi",
"J.",
""
],
[
"Gashti",
"S Noori",
""
],
[
"Azizi",
"T.",
""
]
] | In this paper, by considering the complex form of the quintessence model, we study two different dynamic structures of holographic dark energy as Tsallis and Kaniadakis in the framework Brans-Dicke cosmology. In each setup, we employ non-interacting and interacting cases and calculate some cosmological parameters such ... |
1602.01083 | I. V. Kanatchikov | Igor V. Kanatchikov | Ehrenfest Theorem in Precanonical Quantization of Fields and Gravity | 8 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss a generalization of the Ehrenfest theorem to the recently proposed
precanonical quantization of vielbein gravity which proceeds from a space-time
symmetric generalization of the Hamiltonian formalism to field theory.
Classical Einstein-Palatini equations are derived as equations of expectation
values of pr... | [
{
"created": "Tue, 2 Feb 2016 20:59:06 GMT",
"version": "v1"
}
] | 2016-02-03 | [
[
"Kanatchikov",
"Igor V.",
""
]
] | We discuss a generalization of the Ehrenfest theorem to the recently proposed precanonical quantization of vielbein gravity which proceeds from a space-time symmetric generalization of the Hamiltonian formalism to field theory. Classical Einstein-Palatini equations are derived as equations of expectation values of prec... |
0902.0318 | Elcio Abdalla | Sandro Micheletti, Elcio Abdalla, Bin Wang | A Field Theory Model for Dark Matter and Dark Energy in Interaction | 15 pages, 9 figures; references added; new conclusions drawn from new
figures and computations | Phys.Rev.D79:123506,2009 | 10.1103/PhysRevD.79.123506 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a field theory model for dark energy and dark matter in
interaction. Comparing the classical solutions of the field equations with the
observations of the CMB shift parameter, BAO, lookback time and Gold supernovae
sample, we observe a possible interaction between dark sectors with energy
decay from dark e... | [
{
"created": "Mon, 2 Feb 2009 17:06:13 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Feb 2009 05:07:55 GMT",
"version": "v2"
},
{
"created": "Thu, 12 Feb 2009 16:02:49 GMT",
"version": "v3"
},
{
"created": "Mon, 18 May 2009 13:44:38 GMT",
"version": "v4"
}
] | 2009-07-30 | [
[
"Micheletti",
"Sandro",
""
],
[
"Abdalla",
"Elcio",
""
],
[
"Wang",
"Bin",
""
]
] | We propose a field theory model for dark energy and dark matter in interaction. Comparing the classical solutions of the field equations with the observations of the CMB shift parameter, BAO, lookback time and Gold supernovae sample, we observe a possible interaction between dark sectors with energy decay from dark ene... |
2212.04562 | T.G Zlosnik | Tomi S Koivisto, Tom Zlosnik | Paths to gravitation via the gauging of parameterized field theories | Citations and content added | null | 10.1103/PhysRevD.107.124013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In special-relativistic physics, spacetime is imbued with a fixed,
non-dynamical metric tensor. A path to gravitational theory is to promote this
tensor to a genuine dynamical field. An alternative description of
special-relativistic physics involves no fixed geometry but instead the
inclusion of scalar fields $X^{I}... | [
{
"created": "Thu, 8 Dec 2022 21:03:59 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Jun 2023 16:38:46 GMT",
"version": "v2"
}
] | 2023-06-09 | [
[
"Koivisto",
"Tomi S",
""
],
[
"Zlosnik",
"Tom",
""
]
] | In special-relativistic physics, spacetime is imbued with a fixed, non-dynamical metric tensor. A path to gravitational theory is to promote this tensor to a genuine dynamical field. An alternative description of special-relativistic physics involves no fixed geometry but instead the inclusion of scalar fields $X^{I}(x... |
2111.03316 | Mohsen Khodadi | Mohsen Khodadi and Reza Pourkhodabakhshi | Superradiance and Stability of Kerr Black Hole Enclosed by Anisotropic
Fluid Matter | 14 pages, 2 figures | Physics Letters B 823 (2021) 136775 | 10.1016/j.physletb.2021.136775 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Focusing on the rotating black hole (BH) surrounded by the anisotropic fluid
matters; radiation, dust, and dark matter, we study the massive scalar
superradiant scattering and the stability in the Kiselev spacetime.
Superradiance behavior is dependent on the intensity parameter of the
anisotropic matter $K$ in the Ki... | [
{
"created": "Fri, 5 Nov 2021 08:28:22 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Nov 2021 08:38:30 GMT",
"version": "v2"
}
] | 2021-11-16 | [
[
"Khodadi",
"Mohsen",
""
],
[
"Pourkhodabakhshi",
"Reza",
""
]
] | Focusing on the rotating black hole (BH) surrounded by the anisotropic fluid matters; radiation, dust, and dark matter, we study the massive scalar superradiant scattering and the stability in the Kiselev spacetime. Superradiance behavior is dependent on the intensity parameter of the anisotropic matter $K$ in the Kise... |
1708.04211 | Pedro V. P. Cunha | Pedro V. P. Cunha, Emanuele Berti, Carlos A. R. Herdeiro | Light ring stability in ultra-compact objects | 5 pages, 1 figure; v2: minor changes, references added, includes
published DOI | Phys. Rev. Lett. 119, 251102 (2017) | 10.1103/PhysRevLett.119.251102 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove the following theorem: axisymmetric, stationary solutions of the
Einstein field equations formed from classical gravitational collapse of matter
obeying the null energy condition, that are everywhere smooth and ultracompact
(i.e., they have a light ring) must have at least two light rings, and one of
them is... | [
{
"created": "Mon, 14 Aug 2017 17:15:49 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Dec 2017 23:08:26 GMT",
"version": "v2"
}
] | 2017-12-21 | [
[
"Cunha",
"Pedro V. P.",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
]
] | We prove the following theorem: axisymmetric, stationary solutions of the Einstein field equations formed from classical gravitational collapse of matter obeying the null energy condition, that are everywhere smooth and ultracompact (i.e., they have a light ring) must have at least two light rings, and one of them is s... |
1202.0495 | \"Ozg\"ur Akarsu | Ozgur Akarsu, Tekin Dereli | A Comparison of the LVDP and {\Lambda}CDM Cosmological Models | 6 pages, 5 figures, 1 table, matches the version to be published in
International Journal of Theoretical Physics | International Journal of Theoretical Physics 51 (2012) 2995-3000 | 10.1007/s10773-012-1200-0 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compare the cosmological kinematics obtained via our law of linearly
varying deceleration parameter (LVDP) with the kinematics obtained in the
{\Lambda}CDM model. We show that the LVDP model is almost indistinguishable
from the {\Lambda}CDM model up to the near future of our universe as far as the
current observat... | [
{
"created": "Thu, 2 Feb 2012 17:17:56 GMT",
"version": "v1"
},
{
"created": "Tue, 8 May 2012 19:44:59 GMT",
"version": "v2"
}
] | 2012-10-04 | [
[
"Akarsu",
"Ozgur",
""
],
[
"Dereli",
"Tekin",
""
]
] | We compare the cosmological kinematics obtained via our law of linearly varying deceleration parameter (LVDP) with the kinematics obtained in the {\Lambda}CDM model. We show that the LVDP model is almost indistinguishable from the {\Lambda}CDM model up to the near future of our universe as far as the current observatio... |
gr-qc/9602016 | John Bowes | J.P. Bowes & P.D. Jarvis | Modified Relativity from the kappa-deformed Poincare Algebra | 11 pages long, to appear in 'Class Q Grav' | Class.Quant.Grav.13:1405-1416,1996 | null | UTAS-PHYS-95-14 | gr-qc hep-ph hep-th | null | The theory of the $\kappa$-deformed Poincare algebra is applied to the
analysis of various phenomena in special relativity, quantum mechanics and
field theory. The method relies on the development of series expansions in
$\kappa^{-1}$ of the generalised Lorentz transformations, about the
special-relativistic limit. E... | [
{
"created": "Thu, 8 Feb 1996 23:26:17 GMT",
"version": "v1"
}
] | 2009-11-05 | [
[
"Bowes",
"J. P.",
""
],
[
"Jarvis",
"P. D.",
""
]
] | The theory of the $\kappa$-deformed Poincare algebra is applied to the analysis of various phenomena in special relativity, quantum mechanics and field theory. The method relies on the development of series expansions in $\kappa^{-1}$ of the generalised Lorentz transformations, about the special-relativistic limit. Emp... |
2011.09702 | Rituparno Goswami | Roger Mayala, Rituparno Goswami, Sunil D. Maharaj | Matter shear and vorticity in conformally flat spacetimes | 7 pages, Revtex4 | Phys. Rev. D 103, 044015 (2021) | 10.1103/PhysRevD.103.044015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider conformally flat perturbations on the Friedmann
Lemaitre Robertson Walker (FLRW) spacetime containing a general matter field.
Working with the linearised field equations, we unearth some important
geometrical properties of matter shear and vorticity and how they interact with
the thermodynam... | [
{
"created": "Thu, 19 Nov 2020 08:10:52 GMT",
"version": "v1"
}
] | 2021-02-17 | [
[
"Mayala",
"Roger",
""
],
[
"Goswami",
"Rituparno",
""
],
[
"Maharaj",
"Sunil D.",
""
]
] | In this paper we consider conformally flat perturbations on the Friedmann Lemaitre Robertson Walker (FLRW) spacetime containing a general matter field. Working with the linearised field equations, we unearth some important geometrical properties of matter shear and vorticity and how they interact with the thermodynamic... |
gr-qc/0109014 | Roh Suan Tung | Stephen C. Anco, Roh S. Tung | Properties of the symplectic structure of General Relativity for
spatially bounded spacetime regions | 46 pages; minor errata corrected in Eqs. (3.15), (3.24), (4.37) and
in discussion of examples in sections IV B, C | J.Math.Phys. 43 (2002) 3984-4019 | 10.1063/1.1489501 | null | gr-qc hep-th math-ph math.MP | null | We continue a previous analysis of the covariant Hamiltonian symplectic
structure of General Relativity for spatially bounded regions of spacetime. To
allow for near complete generality, the Hamiltonian is formulated using any
fixed hypersurface, with a boundary given by a closed spacelike 2-surface. A
main result is... | [
{
"created": "Tue, 4 Sep 2001 19:02:55 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Sep 2001 18:24:35 GMT",
"version": "v2"
},
{
"created": "Sun, 24 Mar 2002 21:03:52 GMT",
"version": "v3"
},
{
"created": "Tue, 26 Nov 2002 20:43:29 GMT",
"version": "v4"
},
{
"cre... | 2015-06-25 | [
[
"Anco",
"Stephen C.",
""
],
[
"Tung",
"Roh S.",
""
]
] | We continue a previous analysis of the covariant Hamiltonian symplectic structure of General Relativity for spatially bounded regions of spacetime. To allow for near complete generality, the Hamiltonian is formulated using any fixed hypersurface, with a boundary given by a closed spacelike 2-surface. A main result is t... |
gr-qc/0003102 | Zoltan Perjes | Zolt\'an Perj\'es | A Class of Einstein-Maxwell Fields Generalizing the Equilibrium
Solutions | 9 pages | null | null | null | gr-qc | null | The Einstein-Maxwell fields of rotating stationary sources are represented by
the SU(2,1) spinor potential $\Psi_A$ satisfying \[ \nabla \cdot [\Theta
^{-1}(\Psi_A\nabla \Psi_B-\Psi_B\nabla \Psi_A)]=-2\Theta ^{-2}\vec{C}\cdot
(\Psi_A\nabla \Psi_B-\Psi_B\nabla \Psi_A) \] where $\Theta =\Psi ^{\dagger
}\cdot \Psi $ is ... | [
{
"created": "Tue, 28 Mar 2000 16:01:19 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Perjés",
"Zoltán",
""
]
] | The Einstein-Maxwell fields of rotating stationary sources are represented by the SU(2,1) spinor potential $\Psi_A$ satisfying \[ \nabla \cdot [\Theta ^{-1}(\Psi_A\nabla \Psi_B-\Psi_B\nabla \Psi_A)]=-2\Theta ^{-2}\vec{C}\cdot (\Psi_A\nabla \Psi_B-\Psi_B\nabla \Psi_A) \] where $\Theta =\Psi ^{\dagger }\cdot \Psi $ is th... |
1801.07236 | Giampiero Esposito Dr. | Angelo Tartaglia, Giampiero Esposito, Emmanuele Battista, Simone
Dell'Agnello, Bin Wang | Looking for a new test of general relativity in the solar system | 8 pages, 2 figures | null | 10.1142/S0217732318501365 | null | gr-qc astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper discusses three matter-of-principle methods for measuring the
general relativity correction to the Newtonian values of the position of
collinear Lagrangian points L1 and L2 of the Sun-Earth-satellite system. All
approaches are based on time measurements. The first approach exploits a pulsar
emitting signal... | [
{
"created": "Mon, 22 Jan 2018 18:36:00 GMT",
"version": "v1"
}
] | 2018-08-15 | [
[
"Tartaglia",
"Angelo",
""
],
[
"Esposito",
"Giampiero",
""
],
[
"Battista",
"Emmanuele",
""
],
[
"Dell'Agnello",
"Simone",
""
],
[
"Wang",
"Bin",
""
]
] | This paper discusses three matter-of-principle methods for measuring the general relativity correction to the Newtonian values of the position of collinear Lagrangian points L1 and L2 of the Sun-Earth-satellite system. All approaches are based on time measurements. The first approach exploits a pulsar emitting signals ... |
gr-qc/0412101 | Bela Szilagyi | B. Szilagyi, H-O. Kreiss, J. Winicour | Modeling the Black Hole Excision Problem | 21 pages, 14 postscript figures, minor contents update | Phys.Rev.D71:104035,2005 | 10.1103/PhysRevD.71.104035 | null | gr-qc | null | We analyze the excision strategy for simulating black holes. The problem is
modeled by the propagation of quasi-linear waves in a 1-dimensional spatial
region with timelike outer boundary, spacelike inner boundary and a horizon in
between. Proofs of well-posed evolution and boundary algorithms for a second
differenti... | [
{
"created": "Tue, 21 Dec 2004 14:08:11 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Apr 2005 07:58:27 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Szilagyi",
"B.",
""
],
[
"Kreiss",
"H-O.",
""
],
[
"Winicour",
"J.",
""
]
] | We analyze the excision strategy for simulating black holes. The problem is modeled by the propagation of quasi-linear waves in a 1-dimensional spatial region with timelike outer boundary, spacelike inner boundary and a horizon in between. Proofs of well-posed evolution and boundary algorithms for a second differential... |
1304.6699 | David Sloan | John D. Barrow and David Sloan | Bouncing Anisotropic Universes with Varying Constants | 9 pages, 5 figures | Phys. Rev. D 88, 023518 (2013) | 10.1103/PhysRevD.88.023518 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the evolution of a closed, homogeneous and anisotropic cosmology
subject to a variation of the fine structure 'constant', \alpha, within the
context of the theory introduced by Bekenstein, Sandvik, Barrow and Magueijo,
which generalises Maxwell's equations and general relativity. The variation of
\alpha pe... | [
{
"created": "Wed, 24 Apr 2013 19:07:32 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Barrow",
"John D.",
""
],
[
"Sloan",
"David",
""
]
] | We examine the evolution of a closed, homogeneous and anisotropic cosmology subject to a variation of the fine structure 'constant', \alpha, within the context of the theory introduced by Bekenstein, Sandvik, Barrow and Magueijo, which generalises Maxwell's equations and general relativity. The variation of \alpha perm... |
0910.0345 | Muhammad Sharif | M. Sharif and Sumaira Taj | Energy Contents of Gravitational Waves in Teleparallel Gravity | 14 pages, accepted for publication in Mod. Phys. Lett. A | Mod.Phys.Lett.A25:221-232,2010 | 10.1142/S0217732310031488 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The conserved quantities, that are, gravitational energy-momentum and its
relevant quantities are investigated for cylindrical and spherical
gravitational waves in the framework of teleparallel equivalent of General
Relativity using the Hamiltonian approach. For both cylindrical and spherical
gravitational waves, we ... | [
{
"created": "Fri, 2 Oct 2009 08:23:22 GMT",
"version": "v1"
}
] | 2010-03-04 | [
[
"Sharif",
"M.",
""
],
[
"Taj",
"Sumaira",
""
]
] | The conserved quantities, that are, gravitational energy-momentum and its relevant quantities are investigated for cylindrical and spherical gravitational waves in the framework of teleparallel equivalent of General Relativity using the Hamiltonian approach. For both cylindrical and spherical gravitational waves, we ob... |
gr-qc/0509037 | Charles Suggs | S.-Y. Pi | Space-times produced by a time-dependent scalar field | Presented at PASCOS Meeting 2005 | null | 10.1063/1.2149710 | BUHEP-05-10, MIT-CTP-3676 | gr-qc | null | Models of Lorentz/diffeomorphism violation frequently make use of a
time-dependent scalar field. We investigate space-times produced by such a
field.
| [
{
"created": "Sat, 10 Sep 2005 21:25:59 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Pi",
"S. -Y.",
""
]
] | Models of Lorentz/diffeomorphism violation frequently make use of a time-dependent scalar field. We investigate space-times produced by such a field. |
1510.07152 | Gerard Clement | Karim Ait Moussa, G\'erard Cl\'ement, Hakim Guennoune | Chern-Simons dilaton black holes in 2+1 dimensions | 26 pages, 3 figures, published version | Class. Quantum Grav. 33 (2016) 065008 | null | LAPTH-058/15 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct rotating magnetic solutions to the three-dimensional
Einstein-Maxwell-Chern-Simons-dilaton theory with a Liouville potential. These
include a class of black hole solutions which generalize the warped AdS black
holes. The regular black holes belong to two disjoint sectors. The first sector
includes black ... | [
{
"created": "Sat, 24 Oct 2015 14:48:39 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Feb 2016 10:09:33 GMT",
"version": "v2"
}
] | 2016-02-25 | [
[
"Moussa",
"Karim Ait",
""
],
[
"Clément",
"Gérard",
""
],
[
"Guennoune",
"Hakim",
""
]
] | We construct rotating magnetic solutions to the three-dimensional Einstein-Maxwell-Chern-Simons-dilaton theory with a Liouville potential. These include a class of black hole solutions which generalize the warped AdS black holes. The regular black holes belong to two disjoint sectors. The first sector includes black ho... |
0804.2196 | Alexei Zayats | Alexander B. Balakin, Heinz Dehnen, Alexei E. Zayats | Effective metrics in the non-minimal Einstein-Yang-Mills-Higgs theory | 25 pages, no figures, accepted to Annals of Physics | AnnalsPhys.323:2183-2207,2008 | 10.1016/j.aop.2008.04.003 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We formulate a self-consistent non-minimal five-parameter
Einstein-Yang-Mills-Higgs (EYMH) model and analyse it in terms of effective
(associated, color and color-acoustic) metrics. We use a formalism of
constitutive tensors in order to reformulate master equations for the gauge,
scalar and gravitational fields and r... | [
{
"created": "Mon, 14 Apr 2008 14:59:37 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Jun 2008 12:11:36 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Balakin",
"Alexander B.",
""
],
[
"Dehnen",
"Heinz",
""
],
[
"Zayats",
"Alexei E.",
""
]
] | We formulate a self-consistent non-minimal five-parameter Einstein-Yang-Mills-Higgs (EYMH) model and analyse it in terms of effective (associated, color and color-acoustic) metrics. We use a formalism of constitutive tensors in order to reformulate master equations for the gauge, scalar and gravitational fields and rec... |
0812.0751 | Michele Vallisneri | Michele Vallisneri | A LISA Data-Analysis Primer | 13 pages, proceedings of the 7th LISA Symposium, Barcelona, 16-20 Jun
2008. Corrected more typos, added brief discussion of stochastic and burst
sources, added references | Class. Quantum Grav. 26, 094024 (2009) | 10.1088/0264-9381/26/9/094024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article is an introduction for the nonpractitioner to the ideas and
issues of LISA data analysis, as reflected in the explorations and experiments
of the participants in the Mock LISA Data Challenges. In particular, I discuss
the methods and codes that have been developed for the detection and parameter
estimati... | [
{
"created": "Wed, 3 Dec 2008 16:48:53 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Jan 2009 17:55:57 GMT",
"version": "v2"
},
{
"created": "Fri, 20 Feb 2009 21:52:18 GMT",
"version": "v3"
}
] | 2009-06-27 | [
[
"Vallisneri",
"Michele",
""
]
] | This article is an introduction for the nonpractitioner to the ideas and issues of LISA data analysis, as reflected in the explorations and experiments of the participants in the Mock LISA Data Challenges. In particular, I discuss the methods and codes that have been developed for the detection and parameter estimation... |
1004.5320 | Jose Manuel Velhinho | Jeronimo Cortez, Guillermo A. Mena Marugan, Javier Olmedo and Jose M.
Velhinho | A unique Fock quantization for fields in non-stationary spacetimes | Typos corrected | JCAP 1010:030,2010 | 10.1088/1475-7516/2010/10/030 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In curved spacetimes, the lack of criteria for the construction of a unique
quantization is a fundamental problem undermining the significance of the
predictions of quantum field theory. Inequivalent quantizations lead to
different physics. Recently, however, some uniqueness results have been
obtained for fields in n... | [
{
"created": "Thu, 29 Apr 2010 15:15:37 GMT",
"version": "v1"
},
{
"created": "Sat, 9 Oct 2010 10:00:48 GMT",
"version": "v2"
},
{
"created": "Thu, 11 Nov 2010 11:48:44 GMT",
"version": "v3"
}
] | 2015-03-17 | [
[
"Cortez",
"Jeronimo",
""
],
[
"Marugan",
"Guillermo A. Mena",
""
],
[
"Olmedo",
"Javier",
""
],
[
"Velhinho",
"Jose M.",
""
]
] | In curved spacetimes, the lack of criteria for the construction of a unique quantization is a fundamental problem undermining the significance of the predictions of quantum field theory. Inequivalent quantizations lead to different physics. Recently, however, some uniqueness results have been obtained for fields in non... |
1012.4043 | Andrew J. S. Hamilton | Andrew J. S. Hamilton and Gavin Polhemus | Stereoscopic visualization in curved spacetime: seeing deep inside a
black hole | Authors' cut of version accepted by NJP. Some of the material herein
appeared originally in gr-qc/0903.4717 (http://arxiv.org/abs/0903.4717). 26
pages, 15 figures | New J. Phys. 12 (2010) 123027 | 10.1088/1367-2630/12/12/123027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Stereoscopic visualization adds an additional dimension to the viewer's
experience, giving them a sense of distance. In a general relativistic
visualization, distance can be measured in a variety of ways. We argue that the
affine distance, which matches the usual notion of distance in flat spacetime,
is a natural dis... | [
{
"created": "Sat, 18 Dec 2010 00:38:59 GMT",
"version": "v1"
}
] | 2010-12-21 | [
[
"Hamilton",
"Andrew J. S.",
""
],
[
"Polhemus",
"Gavin",
""
]
] | Stereoscopic visualization adds an additional dimension to the viewer's experience, giving them a sense of distance. In a general relativistic visualization, distance can be measured in a variety of ways. We argue that the affine distance, which matches the usual notion of distance in flat spacetime, is a natural dista... |
1205.6998 | Marco Astorino | Marco Astorino | Charging axisymmetric space-times with cosmological constant | 15 pages, v2: typos corrected | JHEP 06 (2012) 086 | 10.1007/JHEP06(2012)086 | CECS-PHY-12/05 | gr-qc hep-th math-ph math.MP nlin.SI | http://creativecommons.org/licenses/by-nc-sa/3.0/ | Ernst's solution generating technique for adding electromagnetic charge to
axisymmetric space-times in general relativity is generalised in presence of
the cosmological constant. Ernst equations for complex potentials are found and
they are traced back to an affective dual complex dynamical system, whose
symmetries a... | [
{
"created": "Thu, 31 May 2012 13:59:51 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Jul 2012 22:46:44 GMT",
"version": "v2"
}
] | 2012-08-02 | [
[
"Astorino",
"Marco",
""
]
] | Ernst's solution generating technique for adding electromagnetic charge to axisymmetric space-times in general relativity is generalised in presence of the cosmological constant. Ernst equations for complex potentials are found and they are traced back to an affective dual complex dynamical system, whose symmetries are... |
1802.08306 | Daniel Kabat | Pablo Garza, Daniel Kabat, Ariana van Gelder | Fluid analogs for rotating black holes | 21 pages. v2: minor edits, references added. v3: more references,
appendix on geodesics. v4: appendix A expanded | null | 10.1088/1361-6382/aad0fe | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Fluid analog models for gravity are based on the idea that any spacetime
geometry admits a reinterpretation in which space is thought of as a fluid
flowing with a prescribed velocity. This fluid picture is a restatement of the
ADM decomposition of the metric. Most of the literature has focused on flat
spatial geometr... | [
{
"created": "Thu, 22 Feb 2018 21:23:35 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Mar 2018 01:39:07 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Jun 2018 16:33:51 GMT",
"version": "v3"
},
{
"created": "Fri, 13 Jul 2018 13:20:54 GMT",
"version": "v4"
}
] | 2018-08-08 | [
[
"Garza",
"Pablo",
""
],
[
"Kabat",
"Daniel",
""
],
[
"van Gelder",
"Ariana",
""
]
] | Fluid analog models for gravity are based on the idea that any spacetime geometry admits a reinterpretation in which space is thought of as a fluid flowing with a prescribed velocity. This fluid picture is a restatement of the ADM decomposition of the metric. Most of the literature has focused on flat spatial geometrie... |
gr-qc/9702054 | Vitorio Alberto De Lorenci | M. Novello, V. A. De Lorenci and E. Elbaz | Can Non Gravitational Black Holes Exists? | 11 pages, LaTex, no figures, revised version | null | null | CBPF-NF-012/97 | gr-qc | null | We claim that the existence of a mechanism such that photons may be trapped
in a compact domain is not an exclusive property of gravitational forces. We
show the case in which a non-linear electrodynamics allows such effect. In this
latter case we should call this region an Electromagnetic Black Hole (EBH).
| [
{
"created": "Tue, 25 Feb 1997 14:58:12 GMT",
"version": "v1"
},
{
"created": "Mon, 19 May 1997 17:29:42 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Jul 1997 19:32:15 GMT",
"version": "v3"
},
{
"created": "Wed, 26 Nov 1997 18:31:48 GMT",
"version": "v4"
}
] | 2008-02-03 | [
[
"Novello",
"M.",
""
],
[
"De Lorenci",
"V. A.",
""
],
[
"Elbaz",
"E.",
""
]
] | We claim that the existence of a mechanism such that photons may be trapped in a compact domain is not an exclusive property of gravitational forces. We show the case in which a non-linear electrodynamics allows such effect. In this latter case we should call this region an Electromagnetic Black Hole (EBH). |
1212.3527 | Jakub Mielczarek Ph.D. | Jakub Mielczarek | Asymptotic silence in loop quantum cosmology | 4 pages, 3 figures, talk presented at the Multiverse and Fundamental
Cosmology Conference, 10-14 September, 2012, Szczecin, Poland | null | 10.1063/1.4791730 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The state of asymptotic silence, characterized by causal disconnection of the
space points, emerges from various approaches aiming to describe gravitational
phenomena in the limit of large curvatures. In particular, such behavior was
anticipated by Belinsky, Khalatnikov and Lifshitz (BKL) in their famous
conjecture p... | [
{
"created": "Fri, 14 Dec 2012 16:53:51 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Mielczarek",
"Jakub",
""
]
] | The state of asymptotic silence, characterized by causal disconnection of the space points, emerges from various approaches aiming to describe gravitational phenomena in the limit of large curvatures. In particular, such behavior was anticipated by Belinsky, Khalatnikov and Lifshitz (BKL) in their famous conjecture put... |
1105.0265 | Aaron VanDevender | A. P. VanDevender and J. Pace VanDevender | Structure and Mass Absorption of Hypothetical Terrestrial Black Holes | 6 pages, 5 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The prospect of mini black holes, either primordial or in planned experiments
at the Large Hadron Collider, interacting with the earth motivate us to examine
how they may be detected and the scope of their impact on the earth. We propose
that the more massive of these objects may gravitationally bind matter without
s... | [
{
"created": "Mon, 2 May 2011 09:06:28 GMT",
"version": "v1"
}
] | 2011-05-03 | [
[
"VanDevender",
"A. P.",
""
],
[
"VanDevender",
"J. Pace",
""
]
] | The prospect of mini black holes, either primordial or in planned experiments at the Large Hadron Collider, interacting with the earth motivate us to examine how they may be detected and the scope of their impact on the earth. We propose that the more massive of these objects may gravitationally bind matter without sig... |
1907.11489 | Paulo Luz | Paulo Luz and Sante Carloni | Static compact objects in Einstein-Cartan theory | 23 pages, 9 figures | Phys. Rev. D 100, 084037 (2019) | 10.1103/PhysRevD.100.084037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize the Tolman-Oppenheimer-Volkoff equations for space-times
endowed with a Weyssenhoff like torsion field in the Einstein-Cartan theory.
The new set of structure equations clearly show how the presence of torsion
affects the geometry of the space-time. We obtain new exact solutions for
compact objects with... | [
{
"created": "Fri, 26 Jul 2019 11:25:08 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Sep 2019 10:00:52 GMT",
"version": "v2"
}
] | 2019-10-18 | [
[
"Luz",
"Paulo",
""
],
[
"Carloni",
"Sante",
""
]
] | We generalize the Tolman-Oppenheimer-Volkoff equations for space-times endowed with a Weyssenhoff like torsion field in the Einstein-Cartan theory. The new set of structure equations clearly show how the presence of torsion affects the geometry of the space-time. We obtain new exact solutions for compact objects with n... |
gr-qc/0111027 | Marvin Weinstein | Marvin Weinstein | Moving Mirrors, Black Holes, Hawking Radiation and All That | 12 pages, 2 color figures, latex macropackage, Presented at the
Workshop on Light-cone physics: particles and strings, TRENTO 2001 | Nucl.Phys.Proc.Suppl. 108 (2002) 68-73 | 10.1016/S0920-5632(02)01306-3 | SLAC-PUB-9047 | gr-qc hep-ph hep-th | null | In this talk I show how to canonically quantize a massless scalar field in
the background of a Schwarzschild black hole in Lema\^itre coordinates and then
present a simplified derivation of Hawking radiation based upon this procedure.
The key result of quantization procedure is that the Hamiltonian of the system
is e... | [
{
"created": "Fri, 9 Nov 2001 00:19:25 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Weinstein",
"Marvin",
""
]
] | In this talk I show how to canonically quantize a massless scalar field in the background of a Schwarzschild black hole in Lema\^itre coordinates and then present a simplified derivation of Hawking radiation based upon this procedure. The key result of quantization procedure is that the Hamiltonian of the system is exp... |
gr-qc/0404017 | Leonardo Fernandez-Jambrina | L. Fernandez-Jambrina | Singularity-Free Cylindrical Cosmological Model | LaTeX 2e, 8 pages | Class.Quant.Grav. 14 (1997) 3407 | 10.1088/0264-9381/14/12/022 | null | gr-qc | null | A cylindrically symmetric perfect fluid spacetime with no curvature
singularity is shown. The equation of state for the perfect fluid is that of a
stiff fluid. The metric is diagonal and non-separable in comoving coordinates
for the fluid. It is proven that the spacetime is geodesically complete and
globally hyperbol... | [
{
"created": "Mon, 5 Apr 2004 18:38:20 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Fernandez-Jambrina",
"L.",
""
]
] | A cylindrically symmetric perfect fluid spacetime with no curvature singularity is shown. The equation of state for the perfect fluid is that of a stiff fluid. The metric is diagonal and non-separable in comoving coordinates for the fluid. It is proven that the spacetime is geodesically complete and globally hyperbolic... |
gr-qc/0212055 | Annelies Gerber | P Dolan and A Gerber | Janet-Riquier Theory and the Riemann-Lanczos Problems in 2 and 3
Dimensions | 30 pages, latex, no figures | null | null | null | gr-qc | null | The Riemann-Lanczos problem for 4-dimensional manifolds was discussed by
Bampi and Caviglia. Using exterior differential systems they showed that it was
not an involutory differential system until a suitable prolongation was made.
Here, we introduce the alternative Janet-Riquier theory and use it to consider
the Riem... | [
{
"created": "Thu, 12 Dec 2002 10:19:49 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Dolan",
"P",
""
],
[
"Gerber",
"A",
""
]
] | The Riemann-Lanczos problem for 4-dimensional manifolds was discussed by Bampi and Caviglia. Using exterior differential systems they showed that it was not an involutory differential system until a suitable prolongation was made. Here, we introduce the alternative Janet-Riquier theory and use it to consider the Rieman... |
1708.00019 | Andrey Shoom A | Andrey A. Shoom | Metamorphoses of a photon sphere | 15 pages, 9 figures | Phys. Rev. D 96, 084056 (2017) | 10.1103/PhysRevD.96.084056 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There are circular planar null geodesics at $r=3M$ around a Schwarzschild
black hole of mass $M$. These geodesics form a photon sphere. Null geodesics of
the Schwarzschild space-time which do not form the photon sphere are either
escape to null infinity or get captured by the black hole. Thus, from the
dynamical poin... | [
{
"created": "Mon, 31 Jul 2017 18:01:12 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Nov 2017 17:20:58 GMT",
"version": "v2"
}
] | 2017-11-03 | [
[
"Shoom",
"Andrey A.",
""
]
] | There are circular planar null geodesics at $r=3M$ around a Schwarzschild black hole of mass $M$. These geodesics form a photon sphere. Null geodesics of the Schwarzschild space-time which do not form the photon sphere are either escape to null infinity or get captured by the black hole. Thus, from the dynamical point ... |
0807.4514 | Kazuhiro Hayama | Kazuhiro Hayama, Shantanu Desai, Kei Kotake, Soumya D. Mohanty, Malik
Rakhmanov, Tiffany Summerscales, Sanichiro Yoshida | Determination of the angular momentum distribution of supernovae from
gravitational wave observations | 9 pages, 11 figures, add references and some sentenses. To appear on
CQG | Class. Quantum Grav. 25 (2008) 184022 | 10.1088/0264-9381/25/18/184022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Significant progress has been made in the development of an international
network of gravitational wave detectors, such as TAMA300, LIGO, VIRGO, and
GEO600. For these detectors, one of the most promising sources of gravitational
waves are core collapse supernovae especially in our Galaxy. Recent simulations
of core c... | [
{
"created": "Mon, 28 Jul 2008 18:10:58 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Aug 2008 21:57:24 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Hayama",
"Kazuhiro",
""
],
[
"Desai",
"Shantanu",
""
],
[
"Kotake",
"Kei",
""
],
[
"Mohanty",
"Soumya D.",
""
],
[
"Rakhmanov",
"Malik",
""
],
[
"Summerscales",
"Tiffany",
""
],
[
"Yoshida",
"Sanichiro",
"... | Significant progress has been made in the development of an international network of gravitational wave detectors, such as TAMA300, LIGO, VIRGO, and GEO600. For these detectors, one of the most promising sources of gravitational waves are core collapse supernovae especially in our Galaxy. Recent simulations of core col... |
2011.11217 | Asuka Ito | Asuka Ito | Inertial and gravitational effects on a geonium atom | 23 pages, 2 figures, 1 table, typos corrected, minor changes | Class. Quantum Grav. 38 (2021) 195015 | 10.1088/1361-6382/ac1be9 | NCTS-TH/2013 | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reveal all linear order inertial and gravitational effects on a
non-relativistic Dirac particle (mass $m$) on the Earth up to the order of
$1/m$ in the Foldy-Wouthuysen-like expansion. Applying the result to Penning
trap experiments where a Dirac particle experiences the cyclotron motion and
the spin precession in... | [
{
"created": "Mon, 23 Nov 2020 05:35:22 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Sep 2021 03:48:12 GMT",
"version": "v2"
},
{
"created": "Mon, 18 Apr 2022 12:20:21 GMT",
"version": "v3"
}
] | 2022-04-19 | [
[
"Ito",
"Asuka",
""
]
] | We reveal all linear order inertial and gravitational effects on a non-relativistic Dirac particle (mass $m$) on the Earth up to the order of $1/m$ in the Foldy-Wouthuysen-like expansion. Applying the result to Penning trap experiments where a Dirac particle experiences the cyclotron motion and the spin precession in a... |
gr-qc/9901021 | Arlen Anderson | Arlen Anderson and James W. York, Jr | Fixing Einstein's equations | 8 pages, revtex | Phys.Rev.Lett.82:4384-4387,1999 | 10.1103/PhysRevLett.82.4384 | IFP-UNC-528 | gr-qc | null | Einstein's equations for general relativity, when viewed as a dynamical
system for evolving initial data, have a serious flaw: they cannot be proven to
be well-posed (except in special coordinates). That is, they do not produce
unique solutions that depend smoothly on the initial data. To remedy this
failing, there h... | [
{
"created": "Thu, 7 Jan 1999 22:20:45 GMT",
"version": "v1"
}
] | 2012-08-27 | [
[
"Anderson",
"Arlen",
""
],
[
"York,",
"James W.",
"Jr"
]
] | Einstein's equations for general relativity, when viewed as a dynamical system for evolving initial data, have a serious flaw: they cannot be proven to be well-posed (except in special coordinates). That is, they do not produce unique solutions that depend smoothly on the initial data. To remedy this failing, there has... |
1312.7236 | Lorenzo Iorio | Lorenzo Iorio | Two-body orbit expansion due to time-dependent relative acceleration
rate of the cosmological scale factor | LaTex2e, 9 pages, no figures, no tables, 28 references. Accepted for
publication in Galaxies. Typos fixed | Galaxies: 2(1), pp. 13-21, 2014 | 10.3390/galaxies2010013 | null | gr-qc astro-ph.CO physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | By phenomenologically assuming a slow temporal variation of the percent
acceleration rate $\ddot S S^{-1}$ of the cosmic scale factor $S(t)$, it is
shown that the orbit of a local binary undergoes a secular expansion. To first
order in the power expansion of $\ddot S S^{-1}$ around the present epoch
$t_0$, a non-vani... | [
{
"created": "Fri, 27 Dec 2013 10:23:41 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Jan 2014 08:41:20 GMT",
"version": "v2"
}
] | 2014-01-03 | [
[
"Iorio",
"Lorenzo",
""
]
] | By phenomenologically assuming a slow temporal variation of the percent acceleration rate $\ddot S S^{-1}$ of the cosmic scale factor $S(t)$, it is shown that the orbit of a local binary undergoes a secular expansion. To first order in the power expansion of $\ddot S S^{-1}$ around the present epoch $t_0$, a non-vanish... |
1609.02776 | Gianluca Calcagni | Gianluca Calcagni | Multiscale spacetimes from first principles | 7 pages; v2: abstract less technical, theorem split into two parts,
text streamlined and simplified, some technical parts and some references
removed; v3: proof of theorems expanded, results unchanged, typos corrected | Phys. Rev. D 95, 064057 (2017) | 10.1103/PhysRevD.95.064057 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Assuming only a smooth and slow change of spacetime dimensionality at large
scales, we find, in a background- and model-independent way, the general
profile of the Hausdorff and the spectral dimension of multiscale geometries
such as those found in all known quantum gravities. Examples of various
scenarios are given.... | [
{
"created": "Thu, 8 Sep 2016 07:59:46 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Jan 2017 05:04:21 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Mar 2017 15:50:26 GMT",
"version": "v3"
}
] | 2017-03-31 | [
[
"Calcagni",
"Gianluca",
""
]
] | Assuming only a smooth and slow change of spacetime dimensionality at large scales, we find, in a background- and model-independent way, the general profile of the Hausdorff and the spectral dimension of multiscale geometries such as those found in all known quantum gravities. Examples of various scenarios are given. I... |
gr-qc/0303102 | Izzet Sakalli | M.Halilsoy and I.Sakalli | Collision of Electromagnetic Shock Waves Coupled with Axion Waves: An
Example | 6 pages, PACS 04.20Jb. Final version is to appear in CQG | Class.Quant.Grav. 20 (2003) 1417-1422 | 10.1088/0264-9381/20/8/301 | null | gr-qc | null | We present an exact solution that describes collision of electromagnetic
shock waves coupled with axion plane waves. The axion has a rather special
coupling to the cross polarization term of the metric. The initial data on the
null surfaces is well-defined and collision results in a singularity free
interaction regio... | [
{
"created": "Wed, 26 Mar 2003 08:43:12 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Halilsoy",
"M.",
""
],
[
"Sakalli",
"I.",
""
]
] | We present an exact solution that describes collision of electromagnetic shock waves coupled with axion plane waves. The axion has a rather special coupling to the cross polarization term of the metric. The initial data on the null surfaces is well-defined and collision results in a singularity free interaction region.... |
1104.0918 | Yu-Chung Chen | Yu-Chung Chen | The Cosmological Constant as a Ghost of Inflaton | 26 pages, 16 figures, 3 tables | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cosmological constant (term) is the simplest way, presently known, to
illustrate the accelerating expansion of the universe. However, because
of/despite its simple appearance, there is much confusion surrounding its
essence. Theorists have been asking questions for years: Is there a mechanism
to explain this term... | [
{
"created": "Tue, 5 Apr 2011 19:41:49 GMT",
"version": "v1"
}
] | 2015-03-19 | [
[
"Chen",
"Yu-Chung",
""
]
] | The cosmological constant (term) is the simplest way, presently known, to illustrate the accelerating expansion of the universe. However, because of/despite its simple appearance, there is much confusion surrounding its essence. Theorists have been asking questions for years: Is there a mechanism to explain this term? ... |
1604.06016 | Alain Dirkes | Alain Dirkes | Degravitation and the relaxed Einstein equations | 23 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The general idea to modify Einstein's field equations by promoting Newton's
constant $G$ to a covariant differential operator $G_\Lambda(\Box_g)$ was
apparently outlined for the first time in [12-15]. The modification itself
originates from the quest of finding a mechanism which is able to degravitate
the vacuum ener... | [
{
"created": "Wed, 20 Apr 2016 16:17:13 GMT",
"version": "v1"
}
] | 2016-04-21 | [
[
"Dirkes",
"Alain",
""
]
] | The general idea to modify Einstein's field equations by promoting Newton's constant $G$ to a covariant differential operator $G_\Lambda(\Box_g)$ was apparently outlined for the first time in [12-15]. The modification itself originates from the quest of finding a mechanism which is able to degravitate the vacuum energy... |
1205.5111 | Zhoujian Cao Dr | Hwei-Jang Yo, Chun-Yu Lin and Zhoujian Cao | Modifications for numerical stability of black hole evolution | version matched to PRD publication | null | 10.1103/PhysRevD.86.064027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We experiment with several new modifications for the
Baumgarte-Shapiro-Shibata-Nakamura (BSSN) formulation of the Einstein field
equations and demonstrate how these modifications affect the stability of
numerical black hole evolution calculations. With these modifications, we
evolve both single non-rotating excised K... | [
{
"created": "Wed, 23 May 2012 07:31:32 GMT",
"version": "v1"
},
{
"created": "Sun, 12 Aug 2012 06:22:35 GMT",
"version": "v2"
}
] | 2015-06-05 | [
[
"Yo",
"Hwei-Jang",
""
],
[
"Lin",
"Chun-Yu",
""
],
[
"Cao",
"Zhoujian",
""
]
] | We experiment with several new modifications for the Baumgarte-Shapiro-Shibata-Nakamura (BSSN) formulation of the Einstein field equations and demonstrate how these modifications affect the stability of numerical black hole evolution calculations. With these modifications, we evolve both single non-rotating excised Ker... |
gr-qc/0105066 | Anders Hoeglund | S. Brian Edgar and A. Hoglund | Dimensionally Dependent Tensor Identities by Double Antisymmetrisation | 17 pages, 2 figures | J.Math.Phys. 43 (2002) 659-677 | 10.1063/1.1425428 | null | gr-qc | null | Some years ago, Lovelock showed that a number of apparently unrelated
familiar tensor identities had a common structure, and could all be considered
consequences in n-dimensional space of a pair of fundamental identities
involving trace-free (p,p)-forms where 2p >= n$. We generalise Lovelock's
results, and by using t... | [
{
"created": "Fri, 18 May 2001 12:50:02 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Edgar",
"S. Brian",
""
],
[
"Hoglund",
"A.",
""
]
] | Some years ago, Lovelock showed that a number of apparently unrelated familiar tensor identities had a common structure, and could all be considered consequences in n-dimensional space of a pair of fundamental identities involving trace-free (p,p)-forms where 2p >= n$. We generalise Lovelock's results, and by using the... |
2111.07230 | Jing Wang | Jing Wang | Inspiraling Corrugation-Induced Quantum Effects on Neutron Star Binary
Plane | conform to the published version | null | 10.1016/j.physletb.2022.136980 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the path-integral formula and investigate some dynamical quantum
effects induced by the inspiraling lateral corrugation of orbital plane in
gravitationally bound neutron star (NS) binaries, with orbital separation of
$10^9$ m. Based on Dewitt's approach, we calculate the gravitational Casimir
energy cost of th... | [
{
"created": "Sun, 14 Nov 2021 03:18:05 GMT",
"version": "v1"
},
{
"created": "Sat, 26 Feb 2022 05:48:50 GMT",
"version": "v2"
}
] | 2022-03-14 | [
[
"Wang",
"Jing",
""
]
] | We use the path-integral formula and investigate some dynamical quantum effects induced by the inspiraling lateral corrugation of orbital plane in gravitationally bound neutron star (NS) binaries, with orbital separation of $10^9$ m. Based on Dewitt's approach, we calculate the gravitational Casimir energy cost of the ... |
1309.0901 | George Ruppeiner | George Ruppeiner | Thermodynamic curvature and black holes | 27 pages, 10 figures, 7 tables, 78 references. Talk presented at the
conference Breaking of Supersymmetry and Ultraviolet Divergences in extended
Supergravity, in Frascati, Italy, March 27, 2013. v2 corrects some small
problems | "Breaking of Supersymmetry and Ultraviolet Divergences in Extended
Supergravity," Springer Proceedings in Physics Volume 153, 2014, pp 179-203 | 10.1007/978-3-319-03774-5_10 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I give a relatively broad survey of thermodynamic curvature $R$, one spanning
results in fluids and solids, spin systems, and black hole thermodynamics. $R$
results from the thermodynamic information metric giving thermodynamic
fluctuations. $R$ has a unique status in thermodynamics as being a geometric
invariant, th... | [
{
"created": "Wed, 4 Sep 2013 02:58:01 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Mar 2014 23:19:09 GMT",
"version": "v2"
}
] | 2015-06-17 | [
[
"Ruppeiner",
"George",
""
]
] | I give a relatively broad survey of thermodynamic curvature $R$, one spanning results in fluids and solids, spin systems, and black hole thermodynamics. $R$ results from the thermodynamic information metric giving thermodynamic fluctuations. $R$ has a unique status in thermodynamics as being a geometric invariant, the ... |
2404.11245 | Chunbo Lin | Chunbo Lin, Tao Zhu, Rui Niu and Wen Zhao | Constraining the Modified Friction in Gravitational Wave Propagation
with Precessing Black Hole Binaries | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A broad class of modified gravities can result in a modified friction effect
in the propagation of gravitational waves (GWs). This effect changes the
amplitude-damping rate of GWs during their propagation in the cosmological
distance and thus modifies the standard luminosity distance of GWs in general
relativity. The... | [
{
"created": "Wed, 17 Apr 2024 10:49:59 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Apr 2024 03:40:22 GMT",
"version": "v2"
}
] | 2024-04-19 | [
[
"Lin",
"Chunbo",
""
],
[
"Zhu",
"Tao",
""
],
[
"Niu",
"Rui",
""
],
[
"Zhao",
"Wen",
""
]
] | A broad class of modified gravities can result in a modified friction effect in the propagation of gravitational waves (GWs). This effect changes the amplitude-damping rate of GWs during their propagation in the cosmological distance and thus modifies the standard luminosity distance of GWs in general relativity. There... |
2010.09490 | Marcos Vinicius de Sousa Silva | Manuel E. Rodrigues, Marcos V. de S. Silva, Andrew S. de Siqueira | Regular multihorizon black holes in General Relativity | 17 pages, 18 figures | Phys. Rev. D 102, 084038(2020) | 10.1103/PhysRevD.102.084038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, new solutions for regular black holes that have multihorizons
are proposed. These are formed by the direct product of solutions already
published in the literature, which are described through the coupling of
gravity with nonlinear electrodynamics. We analyze the regularity of the
spacetime, the electri... | [
{
"created": "Fri, 16 Oct 2020 17:42:41 GMT",
"version": "v1"
}
] | 2020-10-20 | [
[
"Rodrigues",
"Manuel E.",
""
],
[
"Silva",
"Marcos V. de S.",
""
],
[
"de Siqueira",
"Andrew S.",
""
]
] | In this work, new solutions for regular black holes that have multihorizons are proposed. These are formed by the direct product of solutions already published in the literature, which are described through the coupling of gravity with nonlinear electrodynamics. We analyze the regularity of the spacetime, the electric ... |
gr-qc/0405002 | Huan-wu Peng | H. W. Peng | An unification of general theory of relativity with Dirac's large number
hypothesis | 9 pages, 1 figure | Commun.Theor.Phys. 42 (2004) 703-706 | 10.1088/0253-6102/42/5/703 | null | gr-qc astro-ph | null | Taking a hint from Dirac's large number hypothesis, we note the existence of
cosmologically combined conservation laws that work to cosmologically long
time. We thus modify Einstein's theory of general relativity with fixed
gravitation constant $G$ to a theory for varying $G$, with a tensor term
arising naturally fro... | [
{
"created": "Sat, 1 May 2004 11:48:12 GMT",
"version": "v1"
}
] | 2018-01-17 | [
[
"Peng",
"H. W.",
""
]
] | Taking a hint from Dirac's large number hypothesis, we note the existence of cosmologically combined conservation laws that work to cosmologically long time. We thus modify Einstein's theory of general relativity with fixed gravitation constant $G$ to a theory for varying $G$, with a tensor term arising naturally from ... |
gr-qc/0610113 | Elias Zafiris | Elias Zafiris, Anastasios Mallios | Topos-theoretic Relativization of Physical Representability and Quantum
Gravity | 36 pages, replaced by expanded version | null | null | null | gr-qc | null | In the current debate referring to the construction of a tenable background
independent theory of Quantum Gravity we introduce the notion of
topos-theoretic relativization of physical representability and demonstrate its
relevance concerning the merging of General Relativity and Quantum Theory. For
this purpose we sh... | [
{
"created": "Tue, 24 Oct 2006 09:34:09 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Mar 2007 10:42:40 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Zafiris",
"Elias",
""
],
[
"Mallios",
"Anastasios",
""
]
] | In the current debate referring to the construction of a tenable background independent theory of Quantum Gravity we introduce the notion of topos-theoretic relativization of physical representability and demonstrate its relevance concerning the merging of General Relativity and Quantum Theory. For this purpose we show... |
gr-qc/0412014 | Frans Pretorius | D. Garfinkle, L. Lehner, F. Pretorius | A numerical examination of an evolving black string horizon | 5 pages, 6 figures; acknowledgements added | Phys.Rev. D71 (2005) 064009 | 10.1103/PhysRevD.71.064009 | null | gr-qc hep-th | null | We use the numerical solution describing the evolution of a perturbed black
string presented in Choptuik et al. (2003) to elucidate the intrinsic behavior
of the horizon. It is found that by the end of the simulation, the affine
parameter on the horizon has become very large and the expansion and shear of
the horizon... | [
{
"created": "Fri, 3 Dec 2004 07:48:00 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Dec 2004 23:30:39 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Garfinkle",
"D.",
""
],
[
"Lehner",
"L.",
""
],
[
"Pretorius",
"F.",
""
]
] | We use the numerical solution describing the evolution of a perturbed black string presented in Choptuik et al. (2003) to elucidate the intrinsic behavior of the horizon. It is found that by the end of the simulation, the affine parameter on the horizon has become very large and the expansion and shear of the horizon i... |
1609.06224 | Bibhas Majhi Ranjan | Bibhas Ranjan Majhi, Saurav Samanta | P-V criticality of AdS black holes in a general framework | Extensively modified version, to appear in Phys. Lett. B | Phys.Lett. B773 (2017) 203-207 | 10.1016/j.physletb.2017.08.038 | null | gr-qc cond-mat.stat-mech hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In black hole thermodynamics, it has been observed that AdS black holes
behave as van der Waals system if one interprets the cosmological constant as a
pressure term. Also the critical exponents for the phase transition of AdS
black holes and the van der Waals systems are same. Till now this type of
analysis is done ... | [
{
"created": "Tue, 20 Sep 2016 15:41:04 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Aug 2017 14:59:21 GMT",
"version": "v2"
}
] | 2017-10-19 | [
[
"Majhi",
"Bibhas Ranjan",
""
],
[
"Samanta",
"Saurav",
""
]
] | In black hole thermodynamics, it has been observed that AdS black holes behave as van der Waals system if one interprets the cosmological constant as a pressure term. Also the critical exponents for the phase transition of AdS black holes and the van der Waals systems are same. Till now this type of analysis is done by... |
0710.3308 | H Mohseni Sadjadi | H. Mohseni Sadjadi | Multicomponent solution in modified theory of gravity in the early
universe | 9 pages, accepted for publication in Physical Review D | Phys.Rev.D77:103501,2008 | 10.1103/PhysRevD.77.103501 | null | gr-qc astro-ph hep-th | null | We study the modified theory of gravity in Friedmann Robertson Walker
universe composed of several perfect fluids. We consider the power law
inflation and determine the equation of state parameters in terms of the
parameters of modified gravity's Lagrangian in the early universe. We also
discuss briefly the gravitati... | [
{
"created": "Wed, 17 Oct 2007 14:22:45 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Dec 2007 14:07:19 GMT",
"version": "v2"
},
{
"created": "Sun, 30 Mar 2008 13:42:45 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Sadjadi",
"H. Mohseni",
""
]
] | We study the modified theory of gravity in Friedmann Robertson Walker universe composed of several perfect fluids. We consider the power law inflation and determine the equation of state parameters in terms of the parameters of modified gravity's Lagrangian in the early universe. We also discuss briefly the gravitation... |
1302.6578 | Sarbari Guha | Sarbari Guha and Ranajoy Banerji | Dissipative Cylindrical Collapse of Charged Anisotropic Fluid | 13 pages, 3 figures, submitted. Minor change in the introduction | null | 10.1007/s10773-014-2033-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have studied the dynamics of a cylindrical column of anisotropic, charged
fluid which is experiencing dissipation in the form of heat flow,
free-streaming radiation, and shearing viscosity, undergoing gravitational
collapse. We calculate the Einstein-Maxwell field equations and, using the
Darmois junction conditio... | [
{
"created": "Mon, 25 Feb 2013 18:16:17 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Mar 2013 03:40:58 GMT",
"version": "v2"
},
{
"created": "Thu, 12 Dec 2013 15:39:52 GMT",
"version": "v3"
},
{
"created": "Fri, 13 Dec 2013 15:55:45 GMT",
"version": "v4"
}
] | 2014-03-17 | [
[
"Guha",
"Sarbari",
""
],
[
"Banerji",
"Ranajoy",
""
]
] | We have studied the dynamics of a cylindrical column of anisotropic, charged fluid which is experiencing dissipation in the form of heat flow, free-streaming radiation, and shearing viscosity, undergoing gravitational collapse. We calculate the Einstein-Maxwell field equations and, using the Darmois junction conditions... |
1809.07509 | Piero Nicolini | Michael F. Wondrak, Piero Nicolini and John W. Moffat | Superradiance in Modified Gravity (MOG) | 20 pages, 9 figures; v2: minor equation corrections; v3: one figure
added, version published on JCAP | JCAP12(2018)021 | 10.1088/1475-7516/2018/12/021 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the case of rotating black holes in a dark-matter-emulating
theory of gravity called MOG. The latter introduces a gravitational vector
field with an associated gravitational charge proportional to the black hole
mass and a scalar field in place of the gravitational constant. The resulting
black hole metri... | [
{
"created": "Thu, 20 Sep 2018 07:46:40 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Sep 2018 07:15:49 GMT",
"version": "v2"
},
{
"created": "Wed, 12 Dec 2018 21:01:10 GMT",
"version": "v3"
}
] | 2018-12-14 | [
[
"Wondrak",
"Michael F.",
""
],
[
"Nicolini",
"Piero",
""
],
[
"Moffat",
"John W.",
""
]
] | We consider the case of rotating black holes in a dark-matter-emulating theory of gravity called MOG. The latter introduces a gravitational vector field with an associated gravitational charge proportional to the black hole mass and a scalar field in place of the gravitational constant. The resulting black hole metrics... |
0903.0167 | Abraham Harte | Abraham I. Harte | Electromagnetic self-forces and generalized Killing fields | 20 pages, minor typos corrected | Class.Quant.Grav.26:155015,2009 | 10.1088/0264-9381/26/15/155015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Building upon previous results in scalar field theory, a formalism is
developed that uses generalized Killing fields to understand the behavior of
extended charges interacting with their own electromagnetic fields. New notions
of effective linear and angular momenta are identified, and their evolution
equations are d... | [
{
"created": "Sun, 1 Mar 2009 20:02:55 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Mar 2009 23:37:08 GMT",
"version": "v2"
},
{
"created": "Mon, 20 Jul 2009 18:45:13 GMT",
"version": "v3"
}
] | 2010-03-12 | [
[
"Harte",
"Abraham I.",
""
]
] | Building upon previous results in scalar field theory, a formalism is developed that uses generalized Killing fields to understand the behavior of extended charges interacting with their own electromagnetic fields. New notions of effective linear and angular momenta are identified, and their evolution equations are der... |
1709.00590 | Donato Bini | Donato Bini, Thibault Damour | Gravitational spin-orbit coupling in binary systems, post-Minkowskian
approximation and effective one-body theory | 14 pages, 3 figures, revtex macros | Phys. Rev. D 96, 104038 (2017) | 10.1103/PhysRevD.96.104038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A novel approach for extracting gauge-invariant information about spin-orbit
coupling in gravitationally interacting binary systems is introduced. This
approach is based on the "scattering holonomy", i.e. the integration (from the
infinite past to the infinite future) of the differential spin evolution along
the two ... | [
{
"created": "Sat, 2 Sep 2017 14:36:11 GMT",
"version": "v1"
}
] | 2017-11-29 | [
[
"Bini",
"Donato",
""
],
[
"Damour",
"Thibault",
""
]
] | A novel approach for extracting gauge-invariant information about spin-orbit coupling in gravitationally interacting binary systems is introduced. This approach is based on the "scattering holonomy", i.e. the integration (from the infinite past to the infinite future) of the differential spin evolution along the two wo... |
2006.09302 | Edward Wilson-Ewing | Jarod George Kelly, Robert Santacruz, Edward Wilson-Ewing | Effective loop quantum gravity framework for vacuum spherically
symmetric space-times | 24 pages, 5 figures. v2: Minor changes; v3: typos corrected | Phys. Rev. D 102, 106024 (2020) | 10.1103/PhysRevD.102.106024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop an effective framework for the $\bar\mu$ scheme of holonomy
corrections motivated by loop quantum gravity for vacuum spherically symmetric
space-times. This is done by imposing the areal gauge in the classical theory,
and then expressing the remaining components of the Ashtekar-Barbero connection
in the Ha... | [
{
"created": "Tue, 16 Jun 2020 16:46:03 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Oct 2020 15:16:43 GMT",
"version": "v2"
},
{
"created": "Mon, 13 Jun 2022 20:35:29 GMT",
"version": "v3"
}
] | 2022-06-15 | [
[
"Kelly",
"Jarod George",
""
],
[
"Santacruz",
"Robert",
""
],
[
"Wilson-Ewing",
"Edward",
""
]
] | We develop an effective framework for the $\bar\mu$ scheme of holonomy corrections motivated by loop quantum gravity for vacuum spherically symmetric space-times. This is done by imposing the areal gauge in the classical theory, and then expressing the remaining components of the Ashtekar-Barbero connection in the Hami... |
gr-qc/0103025 | Dr Mayeul Arminjon | Mayeul Arminjon | On a scalar theory of gravitation | TEX, 2 pages. Texte of a communication presented at the 9th Marcel
Grossmann Meeting, Roma, July 2000. Submitted to the Proceedings of the
Meeting | null | 10.1142/9789812777386_0169 | null | gr-qc | null | That preferred-frame theory accounts for special relativity and reduces to it
if the gravitation field cancels. Starting from an interpretation of gravity as
a pressure force, it is based on just one scalar field. This scalar gives the
relation between the flat "background" metric and the curved "physical" metric,
du... | [
{
"created": "Thu, 8 Mar 2001 13:44:59 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Arminjon",
"Mayeul",
""
]
] | That preferred-frame theory accounts for special relativity and reduces to it if the gravitation field cancels. Starting from an interpretation of gravity as a pressure force, it is based on just one scalar field. This scalar gives the relation between the flat "background" metric and the curved "physical" metric, due ... |
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