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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2310.10728 | Konrad Topolski | Konrad Topolski, Samuel Tootle, Luciano Rezzolla | Post-merger gravitational-wave signal from neutron-star binaries: a new
look at an old problem | 13 pages, 7 figures; to be published in ApJ | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The spectral properties of the post-merger gravitational-wave signal from a
binary of neutron stars encode a variety of information about the features of
the system and of the equation of state describing matter around and above
nuclear saturation density. Characterising the properties of such a signal is
an ``old'' ... | [
{
"created": "Mon, 16 Oct 2023 18:00:05 GMT",
"version": "v1"
}
] | 2023-10-18 | [
[
"Topolski",
"Konrad",
""
],
[
"Tootle",
"Samuel",
""
],
[
"Rezzolla",
"Luciano",
""
]
] | The spectral properties of the post-merger gravitational-wave signal from a binary of neutron stars encode a variety of information about the features of the system and of the equation of state describing matter around and above nuclear saturation density. Characterising the properties of such a signal is an ``old'' pr... |
1909.06070 | Rafael Sorkin | Fay Dowker and Rafael D. Sorkin | Symmetry-breaking and zero-one laws | plainTeX, 19 pages, no figures. Most current version will be
available at http://www.perimeterinstitute.ca/personal/rsorkin/some.papers/
(or wherever my home-page may be) | null | 10.1088/1361-6382/ab81cd | null | gr-qc hep-lat hep-th math.PR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We offer further evidence that discreteness of the sort inherent in a causal
set cannot, in and of itself, serve to break Poincar{\'e} invariance. In
particular we prove that a Poisson sprinkling of Minkowski spacetime cannot
endow spacetime with a distinguished spatial or temporal orientation, or with a
distinguishe... | [
{
"created": "Fri, 13 Sep 2019 07:28:33 GMT",
"version": "v1"
}
] | 2020-08-26 | [
[
"Dowker",
"Fay",
""
],
[
"Sorkin",
"Rafael D.",
""
]
] | We offer further evidence that discreteness of the sort inherent in a causal set cannot, in and of itself, serve to break Poincar{\'e} invariance. In particular we prove that a Poisson sprinkling of Minkowski spacetime cannot endow spacetime with a distinguished spatial or temporal orientation, or with a distinguished ... |
1301.6984 | David Schinkel | David Schinkel and Marcus Ansorg and Rodrigo Panosso Macedo | Initial data for perturbed Kerr black holes on hyperboloidal slices | 35 pages, 11 figures, Version published in CQG | Class. Quantum Grav. 31 165001 (2014) | 10.1088/0264-9381/31/16/165001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct initial data corresponding to a single perturbed Kerr black hole
in vacuum. These data are defined on specific hyperboloidal ("ACMC-") slices on
which the mean extrinsic curvature K asymptotically approaches a constant at
future null infinity scri+. More precisely, we require that K obeys the Taylor
expa... | [
{
"created": "Tue, 29 Jan 2013 16:53:59 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Oct 2013 14:09:44 GMT",
"version": "v2"
},
{
"created": "Tue, 26 Aug 2014 10:05:21 GMT",
"version": "v3"
}
] | 2014-08-27 | [
[
"Schinkel",
"David",
""
],
[
"Ansorg",
"Marcus",
""
],
[
"Macedo",
"Rodrigo Panosso",
""
]
] | We construct initial data corresponding to a single perturbed Kerr black hole in vacuum. These data are defined on specific hyperboloidal ("ACMC-") slices on which the mean extrinsic curvature K asymptotically approaches a constant at future null infinity scri+. More precisely, we require that K obeys the Taylor expans... |
0910.3424 | Gennady Gorelik | Gennady Gorelik | Bremermann's Limit and cGh-physics | 3 pages | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Do physical laws limit rate of any serial data processor? A positive answer
suggested by H. J. Bremermann in 1962 has to be corrected to make it compatible
with general relativity. As a result, Bremermann's limit, proportional to mass
M of system, Mc^2/h = ~ (M/gram) 10^47 bits per second, should be replaced by
an ab... | [
{
"created": "Sun, 18 Oct 2009 21:35:14 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Oct 2009 00:57:11 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Dec 2010 01:48:13 GMT",
"version": "v3"
}
] | 2010-12-22 | [
[
"Gorelik",
"Gennady",
""
]
] | Do physical laws limit rate of any serial data processor? A positive answer suggested by H. J. Bremermann in 1962 has to be corrected to make it compatible with general relativity. As a result, Bremermann's limit, proportional to mass M of system, Mc^2/h = ~ (M/gram) 10^47 bits per second, should be replaced by an abso... |
2306.03923 | Alice Spadaro | Alice Spadaro and Riccardo Buscicchio and Daniele Vetrugno and Antoine
Klein and Davide Gerosa and Stefano Vitale and Rita Dolesi and William Joseph
Weber and Monica Colpi | Glitch systematics on the observation of massive black-hole binaries
with LISA | 17 pages, 9 figures, 7 tables (accepted to Physical Review D on 22
September 2023) | Phys. Rev. D 108, 123029 (2023) | 10.1103/PhysRevD.108.123029 | null | gr-qc astro-ph.HE astro-ph.IM | http://creativecommons.org/licenses/by-sa/4.0/ | Detecting and coherently characterizing thousands of gravitational-wave
signals is a core data-analysis challenge for the Laser Interferometer Space
Antenna (LISA). Transient artifacts, or "glitches", with disparate morphologies
are expected to be present in the data, potentially affecting the scientific
return of th... | [
{
"created": "Tue, 6 Jun 2023 18:00:03 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Dec 2023 15:07:48 GMT",
"version": "v2"
}
] | 2023-12-22 | [
[
"Spadaro",
"Alice",
""
],
[
"Buscicchio",
"Riccardo",
""
],
[
"Vetrugno",
"Daniele",
""
],
[
"Klein",
"Antoine",
""
],
[
"Gerosa",
"Davide",
""
],
[
"Vitale",
"Stefano",
""
],
[
"Dolesi",
"Rita",
""
],
... | Detecting and coherently characterizing thousands of gravitational-wave signals is a core data-analysis challenge for the Laser Interferometer Space Antenna (LISA). Transient artifacts, or "glitches", with disparate morphologies are expected to be present in the data, potentially affecting the scientific return of the ... |
gr-qc/9607029 | Christos Charmousis | B. Boisseau, C. Charmousis and B. Linet | Dynamics of a self-gravitating thin cosmic string | 20 pages, latex, 1 figure, final version | null | 10.1103/PhysRevD.55.616 | null | gr-qc | null | We assume that a self-gravitating thin string can be locally described by
what we shall call a smoothed cone. If we impose a specific constraint on the
model of the string, then its central line obeys the Nambu-Goto equations. If
no constraint is added, then the worldsheet of the central line is a totally
geodesic su... | [
{
"created": "Fri, 12 Jul 1996 17:16:32 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Feb 1997 10:01:49 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Boisseau",
"B.",
""
],
[
"Charmousis",
"C.",
""
],
[
"Linet",
"B.",
""
]
] | We assume that a self-gravitating thin string can be locally described by what we shall call a smoothed cone. If we impose a specific constraint on the model of the string, then its central line obeys the Nambu-Goto equations. If no constraint is added, then the worldsheet of the central line is a totally geodesic surf... |
1806.09950 | Norbert Van den Bergh | Norbert Van den Bergh | A new class of non-aligned Einstein-Maxwell solutions with a geodesic,
shearfree and non-expanding multiple Debever-Penrose vector | 9 pages, 1 figure | null | 10.1088/1361-6382/aaebad | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent study [NVdB2017] of algebraically special Einstein-Maxwell fields
it was shown that, for non-zero cosmological constant, non-aligned solutions
cannot have a geodesic and shearfree multiple Debever-Penrose vector k. When
$\Lambda=0$ such solutions do exist and can be classified, after fixing the
null-tetra... | [
{
"created": "Tue, 26 Jun 2018 12:54:16 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jun 2018 06:23:35 GMT",
"version": "v2"
}
] | 2018-12-05 | [
[
"Bergh",
"Norbert Van den",
""
]
] | In a recent study [NVdB2017] of algebraically special Einstein-Maxwell fields it was shown that, for non-zero cosmological constant, non-aligned solutions cannot have a geodesic and shearfree multiple Debever-Penrose vector k. When $\Lambda=0$ such solutions do exist and can be classified, after fixing the null-tetrad ... |
gr-qc/9712007 | Oleg Borisovich Zaslavskii | O.B.Zaslavskii (Department of Physics, Kharkov State University) | Horizon/Matter Systems near the Extreme State | 12 pages, REVTeX, no figures. In the replaced versions the conclusion
about the thermal equilibrium between black-hole and cosmological horizon in
the extreme limit is extended to generic static and axially-symmetrical
rotational metrics. New references are added, Introduction is rewritten to
make it self-close... | Class.Quant.Grav.15:3251,1998 | 10.1088/0264-9381/15/10/025 | null | gr-qc hep-th | null | It is shown that in the extreme limit with a zero surface gravity but nonzero
local temperature the limiting metric of a generic static black hole is
determined by a metric induced on a horizon and one function of two
coordinates, stress-energy tensor of a source picking up its values from a
horizon. The limiting pro... | [
{
"created": "Mon, 1 Dec 1997 13:11:02 GMT",
"version": "v1"
},
{
"created": "Mon, 11 May 1998 13:13:14 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Zaslavskii",
"O. B.",
"",
"Department of Physics, Kharkov State University"
]
] | It is shown that in the extreme limit with a zero surface gravity but nonzero local temperature the limiting metric of a generic static black hole is determined by a metric induced on a horizon and one function of two coordinates, stress-energy tensor of a source picking up its values from a horizon. The limiting proce... |
2009.14637 | S. I. Kruglov | S.I. Kruglov | Rational nonlinear electrodynamics causes the inflation of the universe | 10 pages, 2 figures | Int.J.Mod.Phys.A 35 (2020) 26, 2050168 | 10.1142/S0217751X20501687 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The source of the universe inflation is electromagnetic fields obeying
rational nonlinear electrodynamics proposed earlier. Within this model the
singularities of the electric field at the center of charges, the Ricci scalar,
the Ricci tensor squared and the Kretschmann scalar are absent. We consider the
universe whi... | [
{
"created": "Tue, 29 Sep 2020 15:44:58 GMT",
"version": "v1"
}
] | 2020-10-01 | [
[
"Kruglov",
"S. I.",
""
]
] | The source of the universe inflation is electromagnetic fields obeying rational nonlinear electrodynamics proposed earlier. Within this model the singularities of the electric field at the center of charges, the Ricci scalar, the Ricci tensor squared and the Kretschmann scalar are absent. We consider the universe which... |
gr-qc/9801107 | Christopher Beetle | Christopher Beetle | Midi-Superspace Quantization of Non-Compact Toroidally Symmetric Gravity | 21 pages, LaTeX | Adv.Theor.Math.Phys.2:471-495,1998 | null | CGPG-98/1-2 | gr-qc hep-th | null | We consider the quantization of the midi-superspace associated with a class
of spacetimes with toroidal isometries, but without the compact spatial
hypersurfaces of the well-known Gowdy models. By a symmetry reduction, the
phase space for the system at the classical level can be identified with that
of a free massles... | [
{
"created": "Thu, 29 Jan 1998 21:58:39 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Beetle",
"Christopher",
""
]
] | We consider the quantization of the midi-superspace associated with a class of spacetimes with toroidal isometries, but without the compact spatial hypersurfaces of the well-known Gowdy models. By a symmetry reduction, the phase space for the system at the classical level can be identified with that of a free massless ... |
gr-qc/0208007 | Sergey G. Klimenko | S. Klimenko, G. Mitselmakher, A. Sazonov | A cross-correlation technique in wavelet domain for detection of
stochastic gravitational waves | 15 pages, 4 figures | null | null | null | gr-qc | null | Stochastic gravitational waves (SGW) can be detected by measuring a
cross-correlation of two or more gravitational wave (GW) detectors. In this
paper we describe an optimal SGW search technique in the wavelet domain. It
uses a sign correlation test, which allows calculation of the cross-
correlation significance for ... | [
{
"created": "Fri, 2 Aug 2002 19:31:57 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Klimenko",
"S.",
""
],
[
"Mitselmakher",
"G.",
""
],
[
"Sazonov",
"A.",
""
]
] | Stochastic gravitational waves (SGW) can be detected by measuring a cross-correlation of two or more gravitational wave (GW) detectors. In this paper we describe an optimal SGW search technique in the wavelet domain. It uses a sign correlation test, which allows calculation of the cross- correlation significance for no... |
1811.06516 | Edward Anderson | Edward Anderson | Shape Theories. I. Their Diversity is Killing-Based and thus Nongeneric | 15 pages, including 1 figure. Minor adjustments | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Kendall's Shape Theory covers shapes formed by $N$ points in $\mathbb{R}^d$
upon quotienting out the similarity transformations. This theory is based on
the geometry and topology of the corresponding configuration space: shape
space. Kendall studied this to build a widely useful Shape Statistics
thereupon. The corres... | [
{
"created": "Thu, 15 Nov 2018 18:23:19 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jan 2019 15:53:29 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Mar 2019 00:49:33 GMT",
"version": "v3"
}
] | 2019-03-13 | [
[
"Anderson",
"Edward",
""
]
] | Kendall's Shape Theory covers shapes formed by $N$ points in $\mathbb{R}^d$ upon quotienting out the similarity transformations. This theory is based on the geometry and topology of the corresponding configuration space: shape space. Kendall studied this to build a widely useful Shape Statistics thereupon. The correspo... |
gr-qc/0611029 | Paolo Amore Dr | Paolo Amore, Alfredo Aranda, Mayra Cervantes, J. L. D\'iaz-Cruz,
Francisco M. Fern\'andez | Comment to ``Quantization of FRW spacetimes in the presence of a
cosmological constant and radiation'' | 7 pages, 3 figures, 2 tables Changes in the figures | null | 10.1103/PhysRevD.75.068503 | null | gr-qc | null | The quantization of the Friedmann-Robertson-Walker spacetime in the presence
of a negative cosmological constant was used in a recent paper to conclude that
there are solutions that avoid singularities (big bang--big crunch) at the
quantum level. We show that a proper study of their model{\sl does not prevent}
the oc... | [
{
"created": "Sat, 4 Nov 2006 18:37:44 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Dec 2006 21:58:36 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Amore",
"Paolo",
""
],
[
"Aranda",
"Alfredo",
""
],
[
"Cervantes",
"Mayra",
""
],
[
"Díaz-Cruz",
"J. L.",
""
],
[
"Fernández",
"Francisco M.",
""
]
] | The quantization of the Friedmann-Robertson-Walker spacetime in the presence of a negative cosmological constant was used in a recent paper to conclude that there are solutions that avoid singularities (big bang--big crunch) at the quantum level. We show that a proper study of their model{\sl does not prevent} the occu... |
1102.5667 | Nikodem Poplawski | Nikodem J. Poplawski | Four-fermion interaction from torsion as dark energy | 6 pages; published version | Gen.Relativ.Gravit.44:491-499,2012 | 10.1007/s10714-011-1288-1 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The observed small, positive cosmological constant may originate from a
four-fermion interaction generated by the spin-torsion coupling in the
Einstein-Cartan-Sciama-Kibble gravity if the fermions are condensing. In
particular, such a condensation occurs for quark fields during the
quark-gluon/hadron phase transition... | [
{
"created": "Mon, 28 Feb 2011 14:13:27 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Feb 2012 23:41:38 GMT",
"version": "v2"
}
] | 2012-02-28 | [
[
"Poplawski",
"Nikodem J.",
""
]
] | The observed small, positive cosmological constant may originate from a four-fermion interaction generated by the spin-torsion coupling in the Einstein-Cartan-Sciama-Kibble gravity if the fermions are condensing. In particular, such a condensation occurs for quark fields during the quark-gluon/hadron phase transition i... |
2406.05211 | Alan Tsz-Lok Lam | Alan Tsz-Lok Lam, Hao-Jui Kuan, Masaru Shibata, Karim Van Aelst, Kenta
Kiuchi | Binary neutron star mergers in massive scalar-tensor theory: Properties
of post-merger remnants | 22 pages, 21 figures | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We investigate the properties of post-merger remnants of binary neutron star
mergers in the framework of Damour-Esposito-Farese-type scalar-tensor theory of
gravity with a massive scalar field by numerical relativity simulation. It is
found that the threshold mass for prompt collapse is raised in the presence of
the ... | [
{
"created": "Fri, 7 Jun 2024 18:51:51 GMT",
"version": "v1"
}
] | 2024-06-11 | [
[
"Lam",
"Alan Tsz-Lok",
""
],
[
"Kuan",
"Hao-Jui",
""
],
[
"Shibata",
"Masaru",
""
],
[
"Van Aelst",
"Karim",
""
],
[
"Kiuchi",
"Kenta",
""
]
] | We investigate the properties of post-merger remnants of binary neutron star mergers in the framework of Damour-Esposito-Farese-type scalar-tensor theory of gravity with a massive scalar field by numerical relativity simulation. It is found that the threshold mass for prompt collapse is raised in the presence of the ex... |
1302.1177 | Hossein Mohseni Sadjadi | H. Mohseni Sadjadi and Parviz Goodarzi | Reheating temperature in non-minimal derivative coupling model | 14 pages, 2 figures, discussions added, accepted by JCAP | JCAP07(2013)039 | 10.1088/1475-7516/2013/07/039 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the inflaton as a scalar field described by a non-minimal
derivative coupling model with a power law potential. We study the slow roll
inflation, the rapid oscillation phase, the radiation dominated and the
recombination eras respectively, and estimate e-folds numbers during these
epochs. Using these resu... | [
{
"created": "Thu, 31 Jan 2013 06:58:00 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Jul 2013 19:01:46 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Sadjadi",
"H. Mohseni",
""
],
[
"Goodarzi",
"Parviz",
""
]
] | We consider the inflaton as a scalar field described by a non-minimal derivative coupling model with a power law potential. We study the slow roll inflation, the rapid oscillation phase, the radiation dominated and the recombination eras respectively, and estimate e-folds numbers during these epochs. Using these result... |
2004.01799 | Mauricio Bellini | Juan Ignacio Musmarra, Mauricio Bellini (IFIMAR, CONICET & UNMdP) | Quantum thermodynamics in the interior of a Reissner-Nordstr\"om
black-hole | null | Phys. Dark Univ. 30: 100710 (2020) | 10.1016/j.dark.2020.100710 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the interior of a Reissner-Nordstr\"om Black-Hole (RNBH) using
Relativistic Quantum Geometry, which was introduced in some previous works. We
found discrete energy levels for a scalar field from a polynomial condition for
the Heun Confluent functions expanded around the effective causal radius $r_*$.
From th... | [
{
"created": "Fri, 3 Apr 2020 22:25:53 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Apr 2020 16:14:14 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Apr 2020 19:16:31 GMT",
"version": "v3"
},
{
"created": "Thu, 4 Jun 2020 19:28:52 GMT",
"version": "v4"
},
{
"crea... | 2021-08-16 | [
[
"Musmarra",
"Juan Ignacio",
"",
"IFIMAR, CONICET & UNMdP"
],
[
"Bellini",
"Mauricio",
"",
"IFIMAR, CONICET & UNMdP"
]
] | We study the interior of a Reissner-Nordstr\"om Black-Hole (RNBH) using Relativistic Quantum Geometry, which was introduced in some previous works. We found discrete energy levels for a scalar field from a polynomial condition for the Heun Confluent functions expanded around the effective causal radius $r_*$. From the ... |
0706.3184 | Sigbjorn Hervik | S Hervik, R J van den Hoogen, W C Lim and A A Coley | Late-time behaviour of the tilted Bianchi type VI$_{-1/9}$ models | 13 pages, 1 figure, v2: typos fixed, minor changes, matches published
version | Class.Quant.Grav.25:015002,2008 | 10.1088/0264-9381/25/1/015002 | null | gr-qc astro-ph math-ph math.MP | null | We study tilted perfect fluid cosmological models with a constant equation of
state parameter in spatially homogeneous models of Bianchi type VI$_{-1/9}$
using dynamical systems methods and numerical simulations. We study models with
and without vorticity, with an emphasis on their future asymptotic evolution.
We sho... | [
{
"created": "Thu, 21 Jun 2007 16:08:53 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Dec 2007 10:57:37 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Hervik",
"S",
""
],
[
"Hoogen",
"R J van den",
""
],
[
"Lim",
"W C",
""
],
[
"Coley",
"A A",
""
]
] | We study tilted perfect fluid cosmological models with a constant equation of state parameter in spatially homogeneous models of Bianchi type VI$_{-1/9}$ using dynamical systems methods and numerical simulations. We study models with and without vorticity, with an emphasis on their future asymptotic evolution. We show ... |
gr-qc/9804027 | Marianne Rooman | M. Rooman & Ph. Spindel | Godel metric as a squashed anti-de Sitter geometry | 9 pages (LaTeX), 3 figures (EPS) | Class.Quant.Grav. 15 (1998) 3241-3249 | 10.1088/0264-9381/15/10/024 | null | gr-qc | null | We show that the non flat factor of the Godel metric belongs to a one
parameter family of 2+1 dimensional geometries that also includes the anti-de
Sitter metric. The elements of this family allow a generalization a la
Kaluza-Klein of the usual 3+1 dimensional Godel metric. Their lightcones can be
viewed as deformati... | [
{
"created": "Thu, 9 Apr 1998 15:24:15 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jun 1998 14:10:38 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Rooman",
"M.",
""
],
[
"Spindel",
"Ph.",
""
]
] | We show that the non flat factor of the Godel metric belongs to a one parameter family of 2+1 dimensional geometries that also includes the anti-de Sitter metric. The elements of this family allow a generalization a la Kaluza-Klein of the usual 3+1 dimensional Godel metric. Their lightcones can be viewed as deformation... |
2307.01899 | Jose Mathew Dr | Jose Mathew | Starobinsky inflation and its spin-offs in the light of exact solutions | 10 pages, 2 figures | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | In this paper, we discuss a general method to obtain exact cosmological
solutions in modified gravity, to demonstrate the method it is employed to
obtain exact cosmological solutions in $f(R,\phi)$ gravity. Here, we show that,
given a particular evolution of the Universe, we could obtain different models
of gravity t... | [
{
"created": "Tue, 4 Jul 2023 19:45:14 GMT",
"version": "v1"
}
] | 2023-07-06 | [
[
"Mathew",
"Jose",
""
]
] | In this paper, we discuss a general method to obtain exact cosmological solutions in modified gravity, to demonstrate the method it is employed to obtain exact cosmological solutions in $f(R,\phi)$ gravity. Here, we show that, given a particular evolution of the Universe, we could obtain different models of gravity tha... |
2003.01188 | Roman Konoplya | R. A. Konoplya and A. F. Zinhailo | Quasinormal modes, stability and shadows of a black hole in the 4D
Einstein-Gauss-Bonnet gravity | RevTex, 12 pages, 8 figures, the version published in the journal,
the title is slightly changed | Eur. Phys. J. C (2020) 80:1049 | 10.1140/epjc/s10052-020-08639-8 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently a $D$-dimensional regularization approach leading to the non-trivial
$(3+1)$-dimensional Einstein-Gauss-Bonnet (EGB) effective description of
gravity was formulated which was claimed to bypass the Lovelock's theorem and
avoid Ostrogradsky instability. Later it was shown that the regularization is
possible on... | [
{
"created": "Mon, 2 Mar 2020 21:01:48 GMT",
"version": "v1"
},
{
"created": "Sun, 15 Mar 2020 23:58:44 GMT",
"version": "v2"
},
{
"created": "Thu, 4 Jun 2020 20:19:51 GMT",
"version": "v3"
},
{
"created": "Fri, 13 Nov 2020 06:46:13 GMT",
"version": "v4"
}
] | 2020-11-16 | [
[
"Konoplya",
"R. A.",
""
],
[
"Zinhailo",
"A. F.",
""
]
] | Recently a $D$-dimensional regularization approach leading to the non-trivial $(3+1)$-dimensional Einstein-Gauss-Bonnet (EGB) effective description of gravity was formulated which was claimed to bypass the Lovelock's theorem and avoid Ostrogradsky instability. Later it was shown that the regularization is possible only... |
gr-qc/0608017 | Farrukh Fattoyev Jabborovich | B. J. Ahmedov, V. G. Kagramanova | Electromagnetic Effects in Superconductors in Gravitational Field | 11 pages 2 figures | Int. J. Mod. Phys. D14, N 5, 2005, 837-847 | 10.1142/S0218271805006791 | null | gr-qc astro-ph | null | The general relativistic modifications to the resistive state in
superconductors of second type in the presence of a stationary gravitational
field are studied. Some superconducting devices that can measure the
gravitational field by its red-shift effect on the frequency of radiation are
suggested. It has been shown ... | [
{
"created": "Thu, 3 Aug 2006 12:31:01 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Ahmedov",
"B. J.",
""
],
[
"Kagramanova",
"V. G.",
""
]
] | The general relativistic modifications to the resistive state in superconductors of second type in the presence of a stationary gravitational field are studied. Some superconducting devices that can measure the gravitational field by its red-shift effect on the frequency of radiation are suggested. It has been shown th... |
2009.02168 | Viktor Gakis | Sebastian Bahamonde, Viktor Gakis, Stella Kiorpelidi, Tomi Koivisto,
Jackson Levi Said and Emmanuel N. Saridakis | Cosmological perturbations in modified teleparallel gravity models:
Boundary term extension | 21 pages | Eur. Phys. J. C (2021) 81: 53 | 10.1140/epjc/s10052-021-08833-2 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Teleparallel gravity offers a new avenue in which to construct gravitational
models beyond general relativity. While teleparallel gravity can be framed in a
way to be dynamically equivalent to general relativity, its modifications are
mostly not equivalent to the traditional route to modified gravity. $f(T,B)$
gravit... | [
{
"created": "Thu, 3 Sep 2020 16:21:38 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Sep 2020 15:47:30 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Jan 2021 04:31:11 GMT",
"version": "v3"
}
] | 2021-01-28 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Gakis",
"Viktor",
""
],
[
"Kiorpelidi",
"Stella",
""
],
[
"Koivisto",
"Tomi",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | Teleparallel gravity offers a new avenue in which to construct gravitational models beyond general relativity. While teleparallel gravity can be framed in a way to be dynamically equivalent to general relativity, its modifications are mostly not equivalent to the traditional route to modified gravity. $f(T,B)$ gravity ... |
2206.12907 | Emmanuele Battista Dr. | Emmanuele Battista and Vittorio De Falco | Gravitational waves at the first post-Newtonian order with the
Weyssenhoff fluid in Einstein-Cartan theory | 24 pages, 3 figure. Accepted for publication in European Physical
Journal C | null | 10.1140/epjc/s10052-022-10558-9 | null | gr-qc astro-ph.HE hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The generation of gravitational waves from a post-Newtonian source endowed
with a quantum spin, modeled by the Weyssenhoff fluid, is investigated in the
context of Einstein-Cartan theory at the first post-Newtonian level by
resorting to the Blanchet-Damour formalism. After having worked out the basic
principles of th... | [
{
"created": "Sun, 26 Jun 2022 15:37:37 GMT",
"version": "v1"
}
] | 2022-07-05 | [
[
"Battista",
"Emmanuele",
""
],
[
"De Falco",
"Vittorio",
""
]
] | The generation of gravitational waves from a post-Newtonian source endowed with a quantum spin, modeled by the Weyssenhoff fluid, is investigated in the context of Einstein-Cartan theory at the first post-Newtonian level by resorting to the Blanchet-Damour formalism. After having worked out the basic principles of the ... |
1903.12251 | J\'er\'emie Joudioux | J\'er\'emie Joudioux, Maximilian Thaller, Juan A. Valiente Kroon | The Conformal Einstein Field Equations with Massless Vlasov Matter | 27 pages. To appear in Ann. Inst. Fourier | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove the stability of de Sitter space-time as a solution to the
Einstein-Vlasov system with massless particles. The semi-global stability of
Minkowski space-time is also addressed. The proof relies on conformal
techniques, namely Friedrich's conformal Einstein field equations. We exploit
the conformal invariance ... | [
{
"created": "Thu, 28 Mar 2019 20:32:40 GMT",
"version": "v1"
},
{
"created": "Fri, 15 May 2020 09:05:39 GMT",
"version": "v2"
}
] | 2020-05-18 | [
[
"Joudioux",
"Jérémie",
""
],
[
"Thaller",
"Maximilian",
""
],
[
"Kroon",
"Juan A. Valiente",
""
]
] | We prove the stability of de Sitter space-time as a solution to the Einstein-Vlasov system with massless particles. The semi-global stability of Minkowski space-time is also addressed. The proof relies on conformal techniques, namely Friedrich's conformal Einstein field equations. We exploit the conformal invariance of... |
2311.16000 | Spiros Cotsakis | Spiros Cotsakis | Bifurcation diagrams for spacetime singularities and black holes | 100 pages, published version | Eur. Phys. J. C 84:35 (2024) 1-38 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reexamine the focusing effect crucial to the theorems that predict the
emergence of spacetime singularities and various results in the general theory
of black holes in general relativity. Our investigation incorporates the fully
nonlinear and dispersive nature of the underlying equations. We introduce and
thorough... | [
{
"created": "Mon, 27 Nov 2023 16:46:36 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Jan 2024 13:54:30 GMT",
"version": "v2"
}
] | 2024-01-17 | [
[
"Cotsakis",
"Spiros",
""
]
] | We reexamine the focusing effect crucial to the theorems that predict the emergence of spacetime singularities and various results in the general theory of black holes in general relativity. Our investigation incorporates the fully nonlinear and dispersive nature of the underlying equations. We introduce and thoroughly... |
1804.03004 | Sumanta Chakraborty | Sumanta Chakraborty, Tanmoy Paul and Soumitra SenGupta | Inflation driven by Einstein-Gauss-Bonnet gravity | Revised Version, Published in Phys. Rev. D | Phys. Rev. D 98, 083539 (2018) | 10.1103/PhysRevD.98.083539 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have explicitly demonstrated that scalar coupled Gauss-Bonnet gravity in
four dimension can have non-trivial effects on the early inflationary stage of
our universe. In particular, we have shown that the scalar coupled Gauss-Bonnet
term alone is capable of driving the inflationary stages of the universe
without in... | [
{
"created": "Fri, 6 Apr 2018 06:18:16 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Nov 2018 03:57:27 GMT",
"version": "v2"
}
] | 2018-11-13 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"Paul",
"Tanmoy",
""
],
[
"SenGupta",
"Soumitra",
""
]
] | We have explicitly demonstrated that scalar coupled Gauss-Bonnet gravity in four dimension can have non-trivial effects on the early inflationary stage of our universe. In particular, we have shown that the scalar coupled Gauss-Bonnet term alone is capable of driving the inflationary stages of the universe without inco... |
1503.05593 | Cristian Barrera Hinojosa | Cristian Barrera Hinojosa, Justo L\'opez-Sarri\'on | Moving Schwarzschild Black Hole and Modified Dispersion Relations | 10 pages, no figures. Several typos fixed. New reference added.
Section IV was refined according to referee's comments. Accepted in PLB | Phys. Lett. B 749 (2015) 431-436 | 10.1016/j.physletb.2015.08.006 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the thermodynamics of a moving Schwarzschild black hole, identifying
the temperature and entropy in a relativistic scenario. Furthermore, we set
arguments in a framework relating invariant geometrical quantities under global
spacetime transformations and the dispersion relation of the system. We then
extende... | [
{
"created": "Wed, 18 Mar 2015 21:15:42 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Aug 2015 15:09:56 GMT",
"version": "v2"
}
] | 2015-08-25 | [
[
"Hinojosa",
"Cristian Barrera",
""
],
[
"López-Sarrión",
"Justo",
""
]
] | We study the thermodynamics of a moving Schwarzschild black hole, identifying the temperature and entropy in a relativistic scenario. Furthermore, we set arguments in a framework relating invariant geometrical quantities under global spacetime transformations and the dispersion relation of the system. We then extended ... |
1308.6180 | Sergiu I. Vacaru | Sergiu I. Vacaru | Generic Off--Diagonal Solutions and Solitonic Hierarchies in Einstein
and Modified Gravity | Summary of a talk at MG13 (Stockholm, 2012), GT1, Exact Solutions in
Four and Higher Dimensions: Mathematical Aspects; the results for modified
gravity elaborated during a visit at CERN-TH; version accepted to Mod. Phys.
Lett. A | Mod. Phys. Lett. A, Vol. 30, No. 19 (2015) 1550090 | 10.1142/S021773231550090X | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We summarize some our recent results on encoding exact solutions of field
equations in Einstein and modified gravity theories into solitonic hierarchies
derived for nonholonomic curve flows with associated bi-Hamilton structure. We
argue that there is a canonical distinguished connection for which the
fundamental geo... | [
{
"created": "Tue, 27 Aug 2013 06:39:26 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Mar 2015 12:43:58 GMT",
"version": "v2"
}
] | 2015-05-20 | [
[
"Vacaru",
"Sergiu I.",
""
]
] | We summarize some our recent results on encoding exact solutions of field equations in Einstein and modified gravity theories into solitonic hierarchies derived for nonholonomic curve flows with associated bi-Hamilton structure. We argue that there is a canonical distinguished connection for which the fundamental geome... |
1008.4009 | Chandra Mishra | Chandra Kant Mishra, Bala R. Iyer | Head-on infall of two compact objects: Third post-Newtonian Energy Flux | 25 pages, 2 figures, This version includes the changes appearing in
the Erratum published in Phys. Rev. D | Phys.Rev.D82:104005,2010; Erratum-ibid.D84:069908(E),2011 | 10.1103/PhysRevD.82.104005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Head-on infall of two compact objects with arbitrary mass ratio is
investigated using the multipolar post-Minkowskian approximation method. At the
third post-Newtonian order the energy flux, in addition to the instantaneous
contributions, also includes hereditary contributions consisting of the
gravitational-wave tai... | [
{
"created": "Tue, 24 Aug 2010 10:54:43 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Nov 2010 09:15:06 GMT",
"version": "v2"
},
{
"created": "Tue, 25 Oct 2011 11:30:14 GMT",
"version": "v3"
}
] | 2011-10-26 | [
[
"Mishra",
"Chandra Kant",
""
],
[
"Iyer",
"Bala R.",
""
]
] | Head-on infall of two compact objects with arbitrary mass ratio is investigated using the multipolar post-Minkowskian approximation method. At the third post-Newtonian order the energy flux, in addition to the instantaneous contributions, also includes hereditary contributions consisting of the gravitational-wave tails... |
2209.11877 | Haowen Zhong | Haowen Zhong, Rich Ormiston and Vuk Mandic | Detecting cosmological gravitational waves background after removal of
compact binary coalescences in future gravitational wave detectors | 8 pages, 2 figures, 1 table | null | 10.1103/PhysRevD.107.064048 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The improved sensitivity of third generation gravitational wave detectors
opens the possibility of detecting the primordial cosmological stochastic
gravitational wave background (SGWB). Detection of the cosmological SGWB is
facing a novel challenge: it will likely be masked by the foreground generated
by a large numb... | [
{
"created": "Fri, 23 Sep 2022 22:02:27 GMT",
"version": "v1"
}
] | 2023-03-23 | [
[
"Zhong",
"Haowen",
""
],
[
"Ormiston",
"Rich",
""
],
[
"Mandic",
"Vuk",
""
]
] | The improved sensitivity of third generation gravitational wave detectors opens the possibility of detecting the primordial cosmological stochastic gravitational wave background (SGWB). Detection of the cosmological SGWB is facing a novel challenge: it will likely be masked by the foreground generated by a large number... |
gr-qc/0006030 | Gert Brodin | Gert Brodin, Mattias Marklund and Peter K.S. Dunsby | Non-linear gravitational wave interactions with plasmas | 6 pages, REVTeX, Accepted for publication in Phys. Rev. D,
tentatively scheduled for 15 october 2000 | Phys.Rev. D62 (2000) 104008 | 10.1103/PhysRevD.62.104008 | null | gr-qc astro-ph physics.plasm-ph | null | We consider the interactions of a strong gravitational wave with
electromagnetic fields using the 1+3 orthonormal tetrad formalism. A general
system of equations are derived, describing the influence of a plane fronted
parallel (pp) gravitational wave on a cold relativistic multi-component plasma.
We focus our attent... | [
{
"created": "Thu, 8 Jun 2000 13:25:58 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Aug 2000 09:07:28 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Brodin",
"Gert",
""
],
[
"Marklund",
"Mattias",
""
],
[
"Dunsby",
"Peter K. S.",
""
]
] | We consider the interactions of a strong gravitational wave with electromagnetic fields using the 1+3 orthonormal tetrad formalism. A general system of equations are derived, describing the influence of a plane fronted parallel (pp) gravitational wave on a cold relativistic multi-component plasma. We focus our attentio... |
1803.05203 | Massimo Giovannini | Massimo Giovannini | The propagating speed of relic gravitational waves and their refractive
index during inflation | 32 pages, 12 figures; corrected typos and comments added | null | 10.1140/epjc/s10052-018-5931-9 | CERN-TH-2018-107 | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If the refractive index of the tensor modes increases during a conventional
inflationary stage of expansion the relic graviton spectrum is tilted towards
high frequencies. Two apparently diverse parametrizations of this effect are
shown to be related by a rescaling of the four-dimensional metric through a
conformal f... | [
{
"created": "Wed, 14 Mar 2018 11:09:52 GMT",
"version": "v1"
},
{
"created": "Fri, 25 May 2018 09:08:41 GMT",
"version": "v2"
}
] | 2018-07-04 | [
[
"Giovannini",
"Massimo",
""
]
] | If the refractive index of the tensor modes increases during a conventional inflationary stage of expansion the relic graviton spectrum is tilted towards high frequencies. Two apparently diverse parametrizations of this effect are shown to be related by a rescaling of the four-dimensional metric through a conformal fac... |
1811.12264 | Sebastian Steinhaus | Lisa Glaser and Sebastian Steinhaus | Quantum Gravity on the computer: Impressions of a workshop | 22 pages, 1 figure, impressions from the workshop "Quantum gravity on
the computer" at Nordita ( nordita.org/qg2018 ); v2: minor corrections,
speakers contributions to workshop more distinguished, references added | Universe 2019, 5, 35 | 10.3390/universe5010035 | null | gr-qc hep-lat hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Computer simulations allow us to explore non-perturbative phenomena in
physics. This has the potential to help us understand quantum gravity. Finding
a theory of quantum gravity is a hard problem, but in the last decades many
promising and intriguing approaches that utilize or might benefit from using
numerical metho... | [
{
"created": "Thu, 29 Nov 2018 15:49:26 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Jan 2019 16:20:49 GMT",
"version": "v2"
}
] | 2019-01-21 | [
[
"Glaser",
"Lisa",
""
],
[
"Steinhaus",
"Sebastian",
""
]
] | Computer simulations allow us to explore non-perturbative phenomena in physics. This has the potential to help us understand quantum gravity. Finding a theory of quantum gravity is a hard problem, but in the last decades many promising and intriguing approaches that utilize or might benefit from using numerical methods... |
1501.05167 | Christos Charmousis | Christos Charmousis and Damianos Iosifidis | Self tuning scalar tensor black holes | References added | null | 10.1088/1742-6596/600/1/012003 | LPT-Orsay-15-05 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Studying a certain sub class of higher order Horndeski (scalar-tensor)
theories we discuss a method discovered recently permitting analytic black hole
solutions with a non trivial and regular scalar field. One of the solutions
found has de Sitter asymptotics and self tunes the bulk cosmological constant.
Using the af... | [
{
"created": "Wed, 21 Jan 2015 13:37:27 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Feb 2015 16:20:20 GMT",
"version": "v2"
}
] | 2015-05-20 | [
[
"Charmousis",
"Christos",
""
],
[
"Iosifidis",
"Damianos",
""
]
] | Studying a certain sub class of higher order Horndeski (scalar-tensor) theories we discuss a method discovered recently permitting analytic black hole solutions with a non trivial and regular scalar field. One of the solutions found has de Sitter asymptotics and self tunes the bulk cosmological constant. Using the afor... |
1608.00560 | Fay\c{c}al Hammad | Maha Salah, Fay\c{c}al Hammad, Mir Faizal and Ahmed Farag Ali | Non-singular and Cyclic Universe from the Modified GUP | 20 pages, 2 figures. Matches the published version | JCAP 02 (2017) 035 | 10.1088/1475-7516/2017/02/035 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the effects of a new version of the generalized
uncertainty principle (modified GUP) on the dynamics of the Universe. As the
modified GUP will modify the relation between the entropy and area of the
apparent horizon, it will also deform the Friedmann equations within Jacobson's
approach.... | [
{
"created": "Sat, 30 Jul 2016 03:40:35 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Aug 2016 02:22:05 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Feb 2017 00:02:07 GMT",
"version": "v3"
}
] | 2017-02-22 | [
[
"Salah",
"Maha",
""
],
[
"Hammad",
"Fayçal",
""
],
[
"Faizal",
"Mir",
""
],
[
"Ali",
"Ahmed Farag",
""
]
] | In this paper, we investigate the effects of a new version of the generalized uncertainty principle (modified GUP) on the dynamics of the Universe. As the modified GUP will modify the relation between the entropy and area of the apparent horizon, it will also deform the Friedmann equations within Jacobson's approach. W... |
2308.07331 | Yoshimasa Kurihara | Yoshimasa Kurihara | Green's function in general relativity | 20 pages, 2 figures | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by/4.0/ | This report provides Green's functions (classical propagators) of
gravitational fields of vierbein and spin-connection in general relativity. The
existence of Green's function of the Laplace operator in curved space with an
indefinite metric is ensured owing to the Hodge harmonic analysis. The
analyticity of Green's ... | [
{
"created": "Thu, 10 Aug 2023 07:37:58 GMT",
"version": "v1"
}
] | 2023-08-16 | [
[
"Kurihara",
"Yoshimasa",
""
]
] | This report provides Green's functions (classical propagators) of gravitational fields of vierbein and spin-connection in general relativity. The existence of Green's function of the Laplace operator in curved space with an indefinite metric is ensured owing to the Hodge harmonic analysis. The analyticity of Green's fu... |
2306.13473 | Bobomurat Ahmedov | Bobomurat Ahmedov, Konstantinos F. Dialektopoulos, Jackson Levi Said,
Abdurakhmon Nosirov, Odil Yunusov, Zinovia Oikonomopoulou | Cosmological Perturbations in the Teleparallel analog of Horndeski
gravity | 20 pages | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work we study the cosmological perturbations in
Bahamonde-Dialektopoulos-Levi Said (BDLS) theory, i.e. the teleparallel analog
of Horndeski gravity. In order to understand the evolution of structure in a
cosmological model, it is necessary to study its cosmology not only in the
background but also perturbativ... | [
{
"created": "Fri, 23 Jun 2023 12:29:28 GMT",
"version": "v1"
}
] | 2023-06-26 | [
[
"Ahmedov",
"Bobomurat",
""
],
[
"Dialektopoulos",
"Konstantinos F.",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Nosirov",
"Abdurakhmon",
""
],
[
"Yunusov",
"Odil",
""
],
[
"Oikonomopoulou",
"Zinovia",
""
]
] | In this work we study the cosmological perturbations in Bahamonde-Dialektopoulos-Levi Said (BDLS) theory, i.e. the teleparallel analog of Horndeski gravity. In order to understand the evolution of structure in a cosmological model, it is necessary to study its cosmology not only in the background but also perturbativel... |
2401.13288 | Stoytcho Yazadjiev | Stoytcho Yazadjiev and Daniela Doneva | Black hole no-hair theorem for self-gravitating time-dependent
spherically symmetric multiple scalar fields | 6 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove under certain weak assumptions a black hole no-hair theorem in
spherically symmetric spacetimes for self-gravitating time-dependent multiple
scalar fields with an arbitrary target space admitting a Killing field with a
non-empty axis and arbitrary non-negative potential invariant under the flow of
the Killin... | [
{
"created": "Wed, 24 Jan 2024 08:05:58 GMT",
"version": "v1"
}
] | 2024-01-25 | [
[
"Yazadjiev",
"Stoytcho",
""
],
[
"Doneva",
"Daniela",
""
]
] | We prove under certain weak assumptions a black hole no-hair theorem in spherically symmetric spacetimes for self-gravitating time-dependent multiple scalar fields with an arbitrary target space admitting a Killing field with a non-empty axis and arbitrary non-negative potential invariant under the flow of the Killing ... |
0912.0825 | Vappu Reijonen | Vappu Reijonen | On white dwarfs and neutron stars in Palatini f(R) gravity | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Palatini $f(R)$ gravity, the parameters of the Schwarzschild - de Sitter
solution as well as the whole interior solutions of compact objects are
expected to change when compared to general relativity. We solve the Palatini
field equations numerically in the case of the models $f(R) = R + \alpha R^2$
and $f(R) = R ... | [
{
"created": "Fri, 4 Dec 2009 11:46:02 GMT",
"version": "v1"
}
] | 2009-12-07 | [
[
"Reijonen",
"Vappu",
""
]
] | In Palatini $f(R)$ gravity, the parameters of the Schwarzschild - de Sitter solution as well as the whole interior solutions of compact objects are expected to change when compared to general relativity. We solve the Palatini field equations numerically in the case of the models $f(R) = R + \alpha R^2$ and $f(R) = R - ... |
gr-qc/0005086 | Keith Anguige | Keith Anguige | A class of perfect-fluid cosmologies with polarised Gowdy symmetry and a
Kasner-like singularity | 8 pages, LaTeX | null | null | null | gr-qc | null | We prove the existence of a class of perfect-fluid cosmologies with polarised
Gowdy symmetry and a Kasner-like singularity. These solutions of the Einstein
equations depend on four free functions of one space coordinate and are
constructed by solving a system of Fuchsian equations.
| [
{
"created": "Fri, 19 May 2000 11:26:38 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Anguige",
"Keith",
""
]
] | We prove the existence of a class of perfect-fluid cosmologies with polarised Gowdy symmetry and a Kasner-like singularity. These solutions of the Einstein equations depend on four free functions of one space coordinate and are constructed by solving a system of Fuchsian equations. |
2312.07834 | Jin Li | Mengfei Sun, Jin Li | Parameter Estimation for Intermediate-Mass Binary Black Holes through
Gravitational Waves Observed by DECIGO | null | null | null | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With the anticipated launch of space-based gravitational wave detectors,
including LISA, TaiJi, TianQin, and DECIGO, expected around 2030, the detection
of gravitational waves generated by intermediate-mass black hole binaries
(IMBBHs) becomes a tangible prospect. However, due to the detector's reception
of a substan... | [
{
"created": "Wed, 13 Dec 2023 01:44:30 GMT",
"version": "v1"
}
] | 2023-12-14 | [
[
"Sun",
"Mengfei",
""
],
[
"Li",
"Jin",
""
]
] | With the anticipated launch of space-based gravitational wave detectors, including LISA, TaiJi, TianQin, and DECIGO, expected around 2030, the detection of gravitational waves generated by intermediate-mass black hole binaries (IMBBHs) becomes a tangible prospect. However, due to the detector's reception of a substanti... |
1808.07914 | J\"org Frauendiener | Joerg Frauendiener | Notes on the Sagnac effect in General Relativity | 17 pages | null | 10.1007/s10714-018-2470-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Sagnac effect can be described as the difference in travel time between
two photons traveling along the same path in opposite directions. In this paper
we explore the consequences of this characterisation in the context of General
Relativity. We derive a general expression for this time difference in an
arbitrary... | [
{
"created": "Thu, 23 Aug 2018 19:21:15 GMT",
"version": "v1"
}
] | 2018-11-07 | [
[
"Frauendiener",
"Joerg",
""
]
] | The Sagnac effect can be described as the difference in travel time between two photons traveling along the same path in opposite directions. In this paper we explore the consequences of this characterisation in the context of General Relativity. We derive a general expression for this time difference in an arbitrary s... |
2004.07934 | Yongqiang Wang | Si-Jiang Yang, Jun-Jie Wan, Jing Chen, Jie Yang, Yong-Qiang Wang | Weak cosmic censorship conjecture for the novel $4D$ charged
Einstein-Gauss-Bonnet black hole with test scalar field and particle | 13 pages,1 figure;V2: discussions and references added; V3: published
version | null | 10.1140/epjc/s10052-020-08511-9 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent researches of the novel $4D$ Einstein-Gauss-Bonnet (EGB) gravity have
attracted great attention. In this paper, we investigate the validity of the
weak cosmic censorship conjecture for a novel $4D$ charged EGB black hole with
test charged scalar field and test charged particle respectively. For the test
charge... | [
{
"created": "Wed, 15 Apr 2020 17:16:48 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Jun 2020 14:24:11 GMT",
"version": "v2"
},
{
"created": "Thu, 3 Dec 2020 15:58:25 GMT",
"version": "v3"
}
] | 2020-12-04 | [
[
"Yang",
"Si-Jiang",
""
],
[
"Wan",
"Jun-Jie",
""
],
[
"Chen",
"Jing",
""
],
[
"Yang",
"Jie",
""
],
[
"Wang",
"Yong-Qiang",
""
]
] | Recent researches of the novel $4D$ Einstein-Gauss-Bonnet (EGB) gravity have attracted great attention. In this paper, we investigate the validity of the weak cosmic censorship conjecture for a novel $4D$ charged EGB black hole with test charged scalar field and test charged particle respectively. For the test charged ... |
1608.07066 | Rampei Kimura | Rampei Kimura, Atsushi Naruko, Daisuke Yoshida | Extended vector-tensor theories | 39 pages, 2 figures, v2: published in JCAP, v3: several references
are added, v4: some typos are corrected | null | 10.1088/1475-7516/2017/01/002 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, several extensions of massive vector theory in curved space-time
have been proposed in many literatures. In this paper, we consider the most
general vector-tensor theories that contain up to two derivatives with respect
to metric and vector field. By imposing a degeneracy condition of the
Lagrangian in the ... | [
{
"created": "Thu, 25 Aug 2016 09:48:42 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Jan 2017 01:15:56 GMT",
"version": "v2"
},
{
"created": "Sun, 26 Feb 2017 04:41:03 GMT",
"version": "v3"
},
{
"created": "Thu, 20 Apr 2017 01:24:07 GMT",
"version": "v4"
}
] | 2017-04-21 | [
[
"Kimura",
"Rampei",
""
],
[
"Naruko",
"Atsushi",
""
],
[
"Yoshida",
"Daisuke",
""
]
] | Recently, several extensions of massive vector theory in curved space-time have been proposed in many literatures. In this paper, we consider the most general vector-tensor theories that contain up to two derivatives with respect to metric and vector field. By imposing a degeneracy condition of the Lagrangian in the co... |
gr-qc/0012101 | Jose' P. S. Lemos | Alexander B. Balakin, Richard Kerner, Jose' P. S. Lemos | Cherenkov radiation in a gravitational wave background | LaTeX file, no figures, 19 pages | Class.Quant.Grav. 18 (2001) 2217-2232 | 10.1088/0264-9381/18/11/315 | null | gr-qc astro-ph hep-th | null | A covariant criterion for the Cherenkov radiation emission in the field of a
non-linear gravitational wave is considered in the framework of exact
integrable models of particle dynamics and electromagnetic wave propagation. It
is shown that vacuum interacting with curvature can give rise to Cherenkov
radiation. The c... | [
{
"created": "Wed, 27 Dec 2000 18:40:59 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Jun 2001 19:25:19 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Balakin",
"Alexander B.",
""
],
[
"Kerner",
"Richard",
""
],
[
"Lemos",
"Jose' P. S.",
""
]
] | A covariant criterion for the Cherenkov radiation emission in the field of a non-linear gravitational wave is considered in the framework of exact integrable models of particle dynamics and electromagnetic wave propagation. It is shown that vacuum interacting with curvature can give rise to Cherenkov radiation. The con... |
gr-qc/0105051 | Shih-Yuin Lin | Shih-Yuin Lin | Classical Correspondence of Unruh Effect | 5 pages, 1 figure | null | null | null | gr-qc hep-th | null | Derived from semi-classical quantum field theory in curved spacetime, Unruh
effect was known as a quantum effect. We find that there does exist a classical
correspondence of this effect in electrodynamics. The thermal nature of the
vacuum in correlation function for the uniformly accelerated detector is coming
from t... | [
{
"created": "Tue, 15 May 2001 11:25:29 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Jul 2001 14:43:37 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Lin",
"Shih-Yuin",
""
]
] | Derived from semi-classical quantum field theory in curved spacetime, Unruh effect was known as a quantum effect. We find that there does exist a classical correspondence of this effect in electrodynamics. The thermal nature of the vacuum in correlation function for the uniformly accelerated detector is coming from the... |
1504.04346 | Sergiu I. Vacaru | Sergiu I. Vacaru | Equivalent off-diagonal cosmological models and ekpyrotic scenarios in
f(R)-modified, massive and Einstein gravity | 16 pages, latex2e; it is a regular article variant extended and
modified following requests of the Editor and accepted by EPJC; this version
contains new results and details comparing to the letter variant
arXiv:1304.1080 | Eur. Phys. J. C 75 (2015) 176 | 10.1140/epjc/s10052-015-3407-8 | null | gr-qc astro-ph.CO math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We re-investigate how generic off-diagonal cosmological solutions depending,
in general, on all spacetime coordinates can be constructed in massive and
f-modified gravity using the anholonomic frame deformation method. There are
constructed new classes of locally anisotropic and (in) homogeneous
cosmological metrics ... | [
{
"created": "Wed, 15 Apr 2015 12:46:29 GMT",
"version": "v1"
}
] | 2015-05-06 | [
[
"Vacaru",
"Sergiu I.",
""
]
] | We re-investigate how generic off-diagonal cosmological solutions depending, in general, on all spacetime coordinates can be constructed in massive and f-modified gravity using the anholonomic frame deformation method. There are constructed new classes of locally anisotropic and (in) homogeneous cosmological metrics wi... |
2305.11200 | Benrong Mu | Siyuan Hui and Benrong Mu | Echoes from charged black holes influenced by quintessence | 15 pages, 8 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the effective potential and echoes from the
dyonic black hole with quintessence. For a dyonic black hole, the
quasi-topological electromagnetism provides proper matter energy-momentum
tensor to curve the spacetime, and quintessence strengthens this force. We find
that when the effect of ... | [
{
"created": "Thu, 18 May 2023 14:56:07 GMT",
"version": "v1"
}
] | 2023-05-22 | [
[
"Hui",
"Siyuan",
""
],
[
"Mu",
"Benrong",
""
]
] | In this paper, we investigate the effective potential and echoes from the dyonic black hole with quintessence. For a dyonic black hole, the quasi-topological electromagnetism provides proper matter energy-momentum tensor to curve the spacetime, and quintessence strengthens this force. We find that when the effect of qu... |
gr-qc/0305044 | Alejandro Corichi | Abhay Ashtekar, Alejandro Corichi, Daniel Sudarsky | Non-minimally coupled scalar fields and isolated horizons | 14 pages, 1 figure, revtex4. References and minor clarifications
added | Class.Quant.Grav. 20 (2003) 3413-3426 | 10.1088/0264-9381/20/15/310 | CGPG 2003-05/2, ICN-UNAM-03-05 | gr-qc hep-th | null | The isolated horizon framework is extended to include non-minimally coupled
scalar fields. As expected from the analysis based on Killing horizons, entropy
is no longer given just by (a quarter of) the horizon area but also depends on
the scalar field. In a subsequent paper these results will serve as a point of
depa... | [
{
"created": "Mon, 12 May 2003 17:48:18 GMT",
"version": "v1"
},
{
"created": "Tue, 20 May 2003 20:52:11 GMT",
"version": "v2"
},
{
"created": "Wed, 25 Jun 2003 01:24:14 GMT",
"version": "v3"
}
] | 2016-08-31 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Corichi",
"Alejandro",
""
],
[
"Sudarsky",
"Daniel",
""
]
] | The isolated horizon framework is extended to include non-minimally coupled scalar fields. As expected from the analysis based on Killing horizons, entropy is no longer given just by (a quarter of) the horizon area but also depends on the scalar field. In a subsequent paper these results will serve as a point of depart... |
2007.11915 | Vasilis Oikonomou | V.K. Oikonomou, F.P. Fronimos | A Nearly Massless Graviton in Einstein-Gauss-Bonnet Inflation with
Linear Coupling Implies Constant-roll for the Scalar Field | EPL Accepted | null | 10.1209/0295-5075/131/30001 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The striking GW170817 event indicated that the graviton is nearly massless,
since the gamma rays emitted from the two neutron stars merging arrived almost
simultaneously with the gravitational waves. Thus, the graviton must also be
massless during the inflationary and post-inflationary era, since there is no
obvious ... | [
{
"created": "Thu, 23 Jul 2020 10:37:38 GMT",
"version": "v1"
}
] | 2020-12-02 | [
[
"Oikonomou",
"V. K.",
""
],
[
"Fronimos",
"F. P.",
""
]
] | The striking GW170817 event indicated that the graviton is nearly massless, since the gamma rays emitted from the two neutron stars merging arrived almost simultaneously with the gravitational waves. Thus, the graviton must also be massless during the inflationary and post-inflationary era, since there is no obvious re... |
gr-qc/0611154 | Derek Wise | Derek K. Wise | MacDowell-Mansouri gravity and Cartan geometry | 34 pages, 5 figures. v2: many clarifications, typos corrected | Class.Quant.Grav.27:155010,2010 | 10.1088/0264-9381/27/15/155010 | null | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The geometric content of the MacDowell-Mansouri formulation of general
relativity is best understood in terms of Cartan geometry. In particular,
Cartan geometry gives clear geometric meaning to the MacDowell-Mansouri trick
of combining the Levi-Civita connection and coframe field, or soldering form,
into a single phy... | [
{
"created": "Thu, 30 Nov 2006 03:11:27 GMT",
"version": "v1"
},
{
"created": "Fri, 15 May 2009 16:26:40 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Wise",
"Derek K.",
""
]
] | The geometric content of the MacDowell-Mansouri formulation of general relativity is best understood in terms of Cartan geometry. In particular, Cartan geometry gives clear geometric meaning to the MacDowell-Mansouri trick of combining the Levi-Civita connection and coframe field, or soldering form, into a single physi... |
gr-qc/9306035 | Andrei Linde | Andrei Linde, Dmitri Linde and Arthur Mezhlumian | From the Big Bang Theory to the Theory of a Stationary Universe | No changes to the file, but original figures are included. They
substantially help to understand this paper, as well as eternal inflation in
general, and what is now called the "multiverse" and the "string theory
landscape." High quality figures can be found at
http://www.stanford.edu/~alinde/LLMbigfigs/ | Phys.Rev.D49:1783-1826,1994 | 10.1103/PhysRevD.49.1783 | null | gr-qc astro-ph hep-lat | null | We consider chaotic inflation in the theories with the effective potentials
phi^n and e^{\alpha\phi}. In such theories inflationary domains containing
sufficiently large and homogeneous scalar field \phi permanently produce new
inflationary domains of a similar type. We show that under certain conditions
this process... | [
{
"created": "Tue, 29 Jun 1993 05:15:07 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Feb 2006 20:20:32 GMT",
"version": "v2"
},
{
"created": "Wed, 1 Feb 2006 21:03:31 GMT",
"version": "v3"
}
] | 2009-09-29 | [
[
"Linde",
"Andrei",
""
],
[
"Linde",
"Dmitri",
""
],
[
"Mezhlumian",
"Arthur",
""
]
] | We consider chaotic inflation in the theories with the effective potentials phi^n and e^{\alpha\phi}. In such theories inflationary domains containing sufficiently large and homogeneous scalar field \phi permanently produce new inflationary domains of a similar type. We show that under certain conditions this process o... |
2212.01400 | Oscar J. C. Dias | Oscar J.C. Dias, Takaaki Ishii, Keiju Murata, Jorge E. Santos, Benson
Way | Gregory-Laflamme and Superradiance encounter Black Resonator Strings | 35 pages, 8 figures. v2: Matches published version (minor
improvements) | null | 10.1007/JHEP02(2023)069 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We construct novel black strings that are neither time-translation invariant,
nor axisymmetric, nor translationally invariant in the string direction, but
nevertheless have a helical Killing vector field. These solutions branch from
the superradiant instability of $D=6$ Myers-Perry black strings with equal
angular mo... | [
{
"created": "Fri, 2 Dec 2022 19:00:03 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Aug 2023 18:31:01 GMT",
"version": "v2"
}
] | 2023-08-07 | [
[
"Dias",
"Oscar J. C.",
""
],
[
"Ishii",
"Takaaki",
""
],
[
"Murata",
"Keiju",
""
],
[
"Santos",
"Jorge E.",
""
],
[
"Way",
"Benson",
""
]
] | We construct novel black strings that are neither time-translation invariant, nor axisymmetric, nor translationally invariant in the string direction, but nevertheless have a helical Killing vector field. These solutions branch from the superradiant instability of $D=6$ Myers-Perry black strings with equal angular mome... |
gr-qc/0503072 | Tiberiu Harko | T. Harko, M. K. Mak | Conformally symmetric vacuum solutions of the gravitational field
equations in the brane-world models | 15 pages, 5 figures, to appear in Annals of Physics | Ann.Phys.319:471-492,2005 | 10.1016/j.aop.2005.04.010 | null | gr-qc astro-ph hep-th | null | A class of exact solutions of the gravitational field equations in the vacuum
on the brane are obtained by assuming the existence of a conformal Killing
vector field, with non-static and non-central symmetry. In this case the
general solution of the field equations can be obtained in a parametric form in
terms of the... | [
{
"created": "Thu, 17 Mar 2005 03:19:41 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Apr 2005 03:46:38 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Harko",
"T.",
""
],
[
"Mak",
"M. K.",
""
]
] | A class of exact solutions of the gravitational field equations in the vacuum on the brane are obtained by assuming the existence of a conformal Killing vector field, with non-static and non-central symmetry. In this case the general solution of the field equations can be obtained in a parametric form in terms of the B... |
gr-qc/9912016 | Gabriel Claude | Cl. Gabriel and Ph. Spindel | Quantum charged fields in Rindler space | 1 Tex file + 5 eps figures | Annals Phys. 284 (2000) 263-335 | 10.1006/aphy.2000.6071 | null | gr-qc | null | We study, using Rindler coordinates, the quantization of a charged scalar
field interacting with a constant, external, electric field. First we establish
the expression of the Schwinger vacuum decay rate, using the operator
formalism. Then we rederive it in the framework of the Feynman path integral
method. Our analy... | [
{
"created": "Fri, 3 Dec 1999 13:05:01 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Nov 2000 10:57:31 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Gabriel",
"Cl.",
""
],
[
"Spindel",
"Ph.",
""
]
] | We study, using Rindler coordinates, the quantization of a charged scalar field interacting with a constant, external, electric field. First we establish the expression of the Schwinger vacuum decay rate, using the operator formalism. Then we rederive it in the framework of the Feynman path integral method. Our analysi... |
1504.03186 | Hooman Moradpour Hooman | H. Ebadi and H. Moradpour | Thermodynamical description of modified generalized Chaplygin gas model
of dark energy | Accepted by IJTP | IJTP. Volume 55, Issue 3, pp 1612-1621 (2015) | 10.1007/s10773-015-2799-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a universe filled by a modified generalized Chaplygin gas
together with a pressureless dark matter component. We get a thermodynamical
interpretation for the modified generalized Chaplygin gas confined to the
apparent horizon of FRW universe, whiles dark sectors do not interact with each
other. Thereinaft... | [
{
"created": "Fri, 10 Apr 2015 18:28:29 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Apr 2015 06:05:27 GMT",
"version": "v2"
},
{
"created": "Tue, 17 May 2016 08:22:31 GMT",
"version": "v3"
}
] | 2016-05-18 | [
[
"Ebadi",
"H.",
""
],
[
"Moradpour",
"H.",
""
]
] | We consider a universe filled by a modified generalized Chaplygin gas together with a pressureless dark matter component. We get a thermodynamical interpretation for the modified generalized Chaplygin gas confined to the apparent horizon of FRW universe, whiles dark sectors do not interact with each other. Thereinafter... |
1102.4362 | Michael Hohensee | Michael A. Hohensee and Steven Chu and Achim Peters and Holger Mueller | Equivalence Principle and Gravitational Redshift | 4 pages, 1 figure, 2 tables. Detailed synchronization procedure.
Accepted in Physical Review Letters | Phys.Rev.Lett.106:151102,2011 | 10.1103/PhysRevLett.106.151102 | null | gr-qc physics.atom-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate leading order deviations from general relativity that violate
the Einstein equivalence principle in the gravitational standard model
extension. We show that redshift experiments based on matter waves and clock
comparisons are equivalent to one another. Consideration of torsion balance
tests, along with... | [
{
"created": "Mon, 21 Feb 2011 22:51:43 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Apr 2011 16:10:06 GMT",
"version": "v2"
}
] | 2015-03-19 | [
[
"Hohensee",
"Michael A.",
""
],
[
"Chu",
"Steven",
""
],
[
"Peters",
"Achim",
""
],
[
"Mueller",
"Holger",
""
]
] | We investigate leading order deviations from general relativity that violate the Einstein equivalence principle in the gravitational standard model extension. We show that redshift experiments based on matter waves and clock comparisons are equivalent to one another. Consideration of torsion balance tests, along with m... |
2003.09121 | Xun Xue | Qi Li, Jing Li, Yongxiang Zhou, Xun Xue | The Effective Potential Originating from Swampland and the Non-trivial
Brans-Dicke Coupling | null | null | 10.1088/1674-1137/abab8e | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effective vacuum energy density contributed by the non-trivial contortion
distribution and the bare vacuum energy density can be viewed as the energy
density of the auxiliary quintessence field potential. We find that the
negative bare vacuum energy density from string landscape leads to a
monotonically decreasin... | [
{
"created": "Fri, 20 Mar 2020 06:27:58 GMT",
"version": "v1"
}
] | 2020-10-28 | [
[
"Li",
"Qi",
""
],
[
"Li",
"Jing",
""
],
[
"Zhou",
"Yongxiang",
""
],
[
"Xue",
"Xun",
""
]
] | The effective vacuum energy density contributed by the non-trivial contortion distribution and the bare vacuum energy density can be viewed as the energy density of the auxiliary quintessence field potential. We find that the negative bare vacuum energy density from string landscape leads to a monotonically decreasing ... |
1011.6176 | Francisco Lobo | Francisco S. N. Lobo | Late-time cosmic acceleration: Dark gravity | 4 pages. Prepared for the proceedings of the Spanish Relativity
meeting (ERE2010), Granada, Spain, 6-10 Sep 2010 | J.Phys.Conf.Ser.314:012060,2011 | 10.1088/1742-6596/314/1/012060 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A central theme in cosmology is the perplexing fact that the Universe is
undergoing an accelerating expansion. The latter, one of the most important and
challenging current problems in cosmology, represents a new imbalance in the
governing gravitational field equations. Several candidates, responsible for
this expans... | [
{
"created": "Mon, 29 Nov 2010 10:16:49 GMT",
"version": "v1"
}
] | 2011-09-28 | [
[
"Lobo",
"Francisco S. N.",
""
]
] | A central theme in cosmology is the perplexing fact that the Universe is undergoing an accelerating expansion. The latter, one of the most important and challenging current problems in cosmology, represents a new imbalance in the governing gravitational field equations. Several candidates, responsible for this expansio... |
2001.02833 | Arthur Suvorov Dr. | Arthur G Suvorov | Signatures of Extended Theories of Gravity in Black Hole Oscillations | 8 pages. To appear in the proceedings of the 6th Conference of the
Polish Society on Relativity | Acta Phys. Pol. B Proc. Suppl. 13, 283 (2020) | 10.5506/APhysPolBSupp.13.283 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general relativity, the Kerr metric uniquely represents the geometry
surrounding an isolated, rotating black hole. An identification of significant
non-Kerr features in some astrophysical source would then provide a
`smoking-gun' for the break-down of general relativity in the strong-field
regime. On the other han... | [
{
"created": "Thu, 9 Jan 2020 04:19:59 GMT",
"version": "v1"
}
] | 2020-08-07 | [
[
"Suvorov",
"Arthur G",
""
]
] | In general relativity, the Kerr metric uniquely represents the geometry surrounding an isolated, rotating black hole. An identification of significant non-Kerr features in some astrophysical source would then provide a `smoking-gun' for the break-down of general relativity in the strong-field regime. On the other hand,... |
1106.2423 | Claude Warnick | G. W. Gibbons and C. M. Warnick | The helical phase of chiral nematic liquid crystals as the Bianchi
VII(0) group manifold | 15 pages, 1 figure; Version 2 updated and expanded, to appear in
Phys. Rev. E | null | 10.1103/PhysRevE.84.031709 | DAMTP-2010-43 | gr-qc cond-mat.soft math-ph math.MP physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the optical structure of the helical phase of a chiral nematic
is naturally associated with the Bianchi VII(0) group manifold, of which we
give a full account. The Joets-Ribotta metric governing propagation of the
extraordinary rays is invariant under the simply transitive action of the
universal cover o... | [
{
"created": "Mon, 13 Jun 2011 12:05:13 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Sep 2011 12:33:34 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"Gibbons",
"G. W.",
""
],
[
"Warnick",
"C. M.",
""
]
] | We show that the optical structure of the helical phase of a chiral nematic is naturally associated with the Bianchi VII(0) group manifold, of which we give a full account. The Joets-Ribotta metric governing propagation of the extraordinary rays is invariant under the simply transitive action of the universal cover of ... |
2207.11267 | Leonardo Gualtieri | Lorenzo Pierini, Leonardo Gualtieri | Quasi-normal modes of rotating black holes in Einstein-dilaton
Gauss-Bonnet gravity: the second order in rotation | 19 pages, 6 figures, 5 tables. Minor changes to match the version
published in Phys. Rev. D. arXiv admin note: text overlap with
arXiv:2103.09870 | null | 10.1103/PhysRevD.106.104009 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the most promising strategies to test gravity in the strong-field,
large curvature regime is gravitational spectroscopy: the measurement of black
hole quasi-normal modes from the ringdown signal emitted in the aftermath of a
compact binary coalescence, searching for deviations from the predictions of
general r... | [
{
"created": "Fri, 22 Jul 2022 18:00:04 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Nov 2022 20:31:31 GMT",
"version": "v2"
}
] | 2022-11-16 | [
[
"Pierini",
"Lorenzo",
""
],
[
"Gualtieri",
"Leonardo",
""
]
] | One of the most promising strategies to test gravity in the strong-field, large curvature regime is gravitational spectroscopy: the measurement of black hole quasi-normal modes from the ringdown signal emitted in the aftermath of a compact binary coalescence, searching for deviations from the predictions of general rel... |
2012.12903 | Mark Hertzberg | Itamar J. Allali, Mark P. Hertzberg | Decoherence from General Relativity | 51 pages, 1 figure. V2: Some additional clarifications. Updated
towards version published in PRD | Phys. Rev. D 103, 104053 (2021) | 10.1103/PhysRevD.103.104053 | null | gr-qc astro-ph.CO hep-ph hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is of great interest to explore matter in nontrivial quantum arrangements,
including Schrodinger cat-like states. Such states are sensitive to decoherence
from their environment. Recently, in Ref. [1] we computed the rate of
decoherence of a piece of superposed matter that primarily only interacts
gravitationally,... | [
{
"created": "Wed, 23 Dec 2020 19:00:03 GMT",
"version": "v1"
},
{
"created": "Mon, 24 May 2021 20:31:10 GMT",
"version": "v2"
}
] | 2021-05-26 | [
[
"Allali",
"Itamar J.",
""
],
[
"Hertzberg",
"Mark P.",
""
]
] | It is of great interest to explore matter in nontrivial quantum arrangements, including Schrodinger cat-like states. Such states are sensitive to decoherence from their environment. Recently, in Ref. [1] we computed the rate of decoherence of a piece of superposed matter that primarily only interacts gravitationally, a... |
1410.2064 | Koushik Chakraborty | Koushik Chakraborty, Farook Rahaman and Arkopriya Mallick | A new relativistic model of hybrid star with interactive quark matter
and dense baryonic matter | 11 pages, 13 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a relativistic model of hybrid star admitting conformal symmetry
considering quark matter and baryonic matter as two different fluids. We define
interaction equations between the normal baryonic matter and the quark matter
and study the physical situations for repulsive, attractive and zero
interaction bet... | [
{
"created": "Wed, 8 Oct 2014 11:21:16 GMT",
"version": "v1"
}
] | 2014-10-09 | [
[
"Chakraborty",
"Koushik",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Mallick",
"Arkopriya",
""
]
] | We propose a relativistic model of hybrid star admitting conformal symmetry considering quark matter and baryonic matter as two different fluids. We define interaction equations between the normal baryonic matter and the quark matter and study the physical situations for repulsive, attractive and zero interaction betwe... |
gr-qc/0105008 | Robert Mann | R.B. Mann | Particles on a Circle in Canonical Lineal Gravity | 51 pages, 24 eps figures, latex | Class.Quant.Grav. 18 (2001) 3427-3462 | 10.1088/0264-9381/18/17/306 | WATPHYS-TH01/06 | gr-qc | null | A description of the canonical formulation of lineal gravity minimally
coupled to N point particles in a circular topology is given. The Hamiltonian
is found to be equal to the time-rate of change of the extrinsic curvature
multiplied by the proper circumference of the circle. Exact solutions for pure
gravity and for... | [
{
"created": "Wed, 2 May 2001 17:58:15 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Mann",
"R. B.",
""
]
] | A description of the canonical formulation of lineal gravity minimally coupled to N point particles in a circular topology is given. The Hamiltonian is found to be equal to the time-rate of change of the extrinsic curvature multiplied by the proper circumference of the circle. Exact solutions for pure gravity and for g... |
2109.05974 | Meng-He Wu | Yi Ling, Meng-He Wu | Regular black holes with sub-Planckian curvature | 22 pages, 12 figures | Class. Quantum Grav. 40 075009, 2023 | 10.1088/1361-6382/acc0c9 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a sort of regular black holes with a sub-Planckian Kretschmann
scalar curvature. The metric of this sort of regular black holes is
characterized by an exponentially suppressing gravity potential as well as an
asymptotically Minkowski core. In particular, with different choices of the
potential form, they... | [
{
"created": "Mon, 13 Sep 2021 13:50:18 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Mar 2023 11:20:09 GMT",
"version": "v2"
}
] | 2023-03-15 | [
[
"Ling",
"Yi",
""
],
[
"Wu",
"Meng-He",
""
]
] | We construct a sort of regular black holes with a sub-Planckian Kretschmann scalar curvature. The metric of this sort of regular black holes is characterized by an exponentially suppressing gravity potential as well as an asymptotically Minkowski core. In particular, with different choices of the potential form, they c... |
gr-qc/0612160 | Lorenzo Iorio | Lorenzo Iorio | Testing DGP modified gravity in the Solar System | LaTex, 3 pages, no figures, no tables, 17 references. Paper presented
at the Eleventh Marcel Grossmann Meeting on General Relativity, 23-29 July,
Freie Universitaet Berlin, 2006 | Proceedings of the MG11 Meeting on General Relativity, ed. H.
Kleinert, R.T. Jantzen, R. Ruffini, World Scientific, Singapore, pp.
2839-2841, 2008 | 10.1142/9789812834300_0532 | null | gr-qc astro-ph hep-ph physics.space-ph | null | In this talk we review the perspectives of testing the multidimensional
Dvali-Gabadadze-Porrati (DGP) model of modified gravity in the Solar System.
The inner planets, contrary to the giant gaseous ones, yield the most promising
scenario for the near future.
| [
{
"created": "Mon, 25 Dec 2006 15:13:15 GMT",
"version": "v1"
}
] | 2012-07-31 | [
[
"Iorio",
"Lorenzo",
""
]
] | In this talk we review the perspectives of testing the multidimensional Dvali-Gabadadze-Porrati (DGP) model of modified gravity in the Solar System. The inner planets, contrary to the giant gaseous ones, yield the most promising scenario for the near future. |
2002.04856 | Tahereh Rostami | Hassan Firouzjahi, Asieh Karami, Tahereh Rostami | Vacuum decay in the presence of a cosmic string | 21 pages, 5 figures | Phys. Rev. D 101, 104036 (2020) | 10.1103/PhysRevD.101.104036 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the false vacuum decay and bubble nucleation in the presence of a
cosmic string in dS spacetime. A cosmic string induces a deficit angle in
spacetime around itself so the nucleated bubble has the shape of a rugby ball.
Working in thin wall approximation and using the junction conditions we study
the dynamics... | [
{
"created": "Wed, 12 Feb 2020 09:12:00 GMT",
"version": "v1"
},
{
"created": "Mon, 25 May 2020 04:57:25 GMT",
"version": "v2"
}
] | 2020-05-27 | [
[
"Firouzjahi",
"Hassan",
""
],
[
"Karami",
"Asieh",
""
],
[
"Rostami",
"Tahereh",
""
]
] | We study the false vacuum decay and bubble nucleation in the presence of a cosmic string in dS spacetime. A cosmic string induces a deficit angle in spacetime around itself so the nucleated bubble has the shape of a rugby ball. Working in thin wall approximation and using the junction conditions we study the dynamics o... |
1503.03833 | Anuj Kumar Dubey Mr. | Anuj Kumar Dubey and A.K. Sen | Gravitational Redshift in Kerr - Newman Geometry | Accepted for publication in Astrophysics and Space Science,
Manuscript No.: ASTR-D-15-00464R2 | null | 10.1007/s10509-015-2539-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known fact that gravitational mass can alter the space time
structure and gravitational redshift is one of its examples. Static electric or
magnetic charge can also alter the space time structure, similar to
gravitational mass, giving rise to its effect on redshift. This can also be
considered as electro a... | [
{
"created": "Thu, 12 Mar 2015 18:13:10 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Mar 2015 18:46:37 GMT",
"version": "v2"
},
{
"created": "Wed, 22 Apr 2015 03:47:04 GMT",
"version": "v3"
},
{
"created": "Thu, 2 Jul 2015 10:38:57 GMT",
"version": "v4"
},
{
"cr... | 2015-10-19 | [
[
"Dubey",
"Anuj Kumar",
""
],
[
"Sen",
"A. K.",
""
]
] | It is well known fact that gravitational mass can alter the space time structure and gravitational redshift is one of its examples. Static electric or magnetic charge can also alter the space time structure, similar to gravitational mass, giving rise to its effect on redshift. This can also be considered as electro and... |
1310.3373 | Mordehai Milgrom | Mordehai Milgrom | MOND and its bimetric formulation | 9 pages. Contribution to Les Rencontres du Vietnam "Hot Topics in
General Relativity and Gravitation", July-August 2013 | null | null | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I first give a succinct account of the MOND paradigm--emphasizing the
centrality of scale invariance in the nonrelativistic, deep-MOND limit--and
describing rudiments of its phenomenology. I then present my credo, and some
generalities, concerning existing MOND theories. Then I concentrate on one
relativistic formula... | [
{
"created": "Sat, 12 Oct 2013 13:39:18 GMT",
"version": "v1"
}
] | 2013-10-15 | [
[
"Milgrom",
"Mordehai",
""
]
] | I first give a succinct account of the MOND paradigm--emphasizing the centrality of scale invariance in the nonrelativistic, deep-MOND limit--and describing rudiments of its phenomenology. I then present my credo, and some generalities, concerning existing MOND theories. Then I concentrate on one relativistic formulati... |
gr-qc/0302065 | Ratna Koley | Ratna Koley, Supratik Pal and Sayan Kar | Geodesics and geodesic deviation in a two-dimensional black hole | 18 pages, 4 figures, To be published in American Journal of Physics | Am.J.Phys. 71 (2003) 1037-1042 | 10.1119/1.1566426 | null | gr-qc | null | We introduce an exactly solvable example of timelike geodesic motion and
geodesic deviation in the background geometry of a well-known two-dimensional
black hole spacetime. The effective potential for geodesic motion turns out to
be either a harmonic oscillator or an inverted harmonic oscillator or a linear
function ... | [
{
"created": "Mon, 17 Feb 2003 10:25:21 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Koley",
"Ratna",
""
],
[
"Pal",
"Supratik",
""
],
[
"Kar",
"Sayan",
""
]
] | We introduce an exactly solvable example of timelike geodesic motion and geodesic deviation in the background geometry of a well-known two-dimensional black hole spacetime. The effective potential for geodesic motion turns out to be either a harmonic oscillator or an inverted harmonic oscillator or a linear function of... |
1910.03457 | Oleg Tsupko | Oleg Yu. Tsupko and Gennady S. Bisnovatyi-Kogan | Hills and holes in the microlensing light curve due to plasma
environment around gravitational lens | Published in MNRAS | MNRAS 491, 5636-5649 (2020) | 10.1093/mnras/stz3365 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the influence of the plasma surrounding the
gravitational lens on the effect of microlensing. In presence of plasma around
the lens, the deflection angle is determined by both the gravitational field of
the lens and the chromatic refraction in the inhomogeneous plasma. We calculate
micro... | [
{
"created": "Tue, 8 Oct 2019 15:26:53 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Nov 2019 23:31:40 GMT",
"version": "v2"
},
{
"created": "Mon, 30 Dec 2019 13:41:20 GMT",
"version": "v3"
}
] | 2020-01-01 | [
[
"Tsupko",
"Oleg Yu.",
""
],
[
"Bisnovatyi-Kogan",
"Gennady S.",
""
]
] | In this paper, we investigate the influence of the plasma surrounding the gravitational lens on the effect of microlensing. In presence of plasma around the lens, the deflection angle is determined by both the gravitational field of the lens and the chromatic refraction in the inhomogeneous plasma. We calculate microle... |
2205.04208 | Kuantay Boshkayev | Kuantay Boshkayev, Talgar Konysbayev, Yergali Kurmanov, Orlando Luongo
and Daniele Malafarina | Accretion disk luminosity for black holes surrounded by dark matter with
tangential pressure | 8 pages, 5 figures and 2 tables | null | 10.3847/1538-4357/ac8804 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the motion of test particles in the gravitational field of a
Schwarzschild black hole surrounded by a spherical dark matter cloud with
non-zero tangential pressure and compute the luminosity of the accretion disk.
The presence of non vanishing tangential pressures allows to mimic the dark
matter's angular mo... | [
{
"created": "Mon, 9 May 2022 11:52:09 GMT",
"version": "v1"
}
] | 2022-09-14 | [
[
"Boshkayev",
"Kuantay",
""
],
[
"Konysbayev",
"Talgar",
""
],
[
"Kurmanov",
"Yergali",
""
],
[
"Luongo",
"Orlando",
""
],
[
"Malafarina",
"Daniele",
""
]
] | We study the motion of test particles in the gravitational field of a Schwarzschild black hole surrounded by a spherical dark matter cloud with non-zero tangential pressure and compute the luminosity of the accretion disk. The presence of non vanishing tangential pressures allows to mimic the dark matter's angular mome... |
1103.3439 | Daniel M\"uller | Daniel M\"uller, M\'arcio E. S. Alves and Jos\'e C. N. de Araujo | Isotropisation of Quadratic Gravity: Scalar and Tensor Components | submitted for publication | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is believed that soon after the Planck era, spacetime should have a
semi-classical nature. Therefore, it is unavoidable to modify the theory of
General Relativity or look for alternative theories of gravitation. An
interesting possibility found in the literature considers two geometric
counter-terms to regularize ... | [
{
"created": "Thu, 17 Mar 2011 15:51:51 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Jul 2013 18:46:46 GMT",
"version": "v2"
}
] | 2013-08-01 | [
[
"Müller",
"Daniel",
""
],
[
"Alves",
"Márcio E. S.",
""
],
[
"de Araujo",
"José C. N.",
""
]
] | It is believed that soon after the Planck era, spacetime should have a semi-classical nature. Therefore, it is unavoidable to modify the theory of General Relativity or look for alternative theories of gravitation. An interesting possibility found in the literature considers two geometric counter-terms to regularize th... |
0801.2090 | Sebastiano Bernuzzi | Sebastiano Bernuzzi, Alessandro Nagar and Roberto De Pietri | Dynamical excitation of space-time modes of compact objects | RevTeX, 9 pages, 7 figures, Published in Phys. Rev. D | Phys.Rev.D77:044042,2008 | 10.1103/PhysRevD.77.044042 | null | gr-qc | null | We discuss, in the perturbative regime, the scattering of Gaussian pulses of
odd-parity gravitational radiation off a non-rotating relativistic star and a
Schwarzschild Black Hole. We focus on the excitation of the $w$-modes of the
star as a function of the width $b$ of the pulse and we contrast it with the
outcome o... | [
{
"created": "Mon, 14 Jan 2008 15:28:20 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Jan 2008 22:19:39 GMT",
"version": "v2"
},
{
"created": "Thu, 6 Mar 2008 17:02:39 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Nagar",
"Alessandro",
""
],
[
"De Pietri",
"Roberto",
""
]
] | We discuss, in the perturbative regime, the scattering of Gaussian pulses of odd-parity gravitational radiation off a non-rotating relativistic star and a Schwarzschild Black Hole. We focus on the excitation of the $w$-modes of the star as a function of the width $b$ of the pulse and we contrast it with the outcome of ... |
gr-qc/9402033 | Yuri Shtanov | Yuri V. Shtanov (Brown University) and Sergei A. Yushchenko
(Bogolyubov Institute, Kiev) | Conformally Invariant Cosmology Based on Riemann-Cartan Spacetime | Brown preprint BROWN-HET-937, 24 pages, bugs in latex fixed | Class.Quant.Grav.11:2455-2482,1994 | 10.1088/0264-9381/11/10/007 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Conformally invariant GUT-like model including gravity based on Riemann -
Cartan space-time $U_4$ is considered. Cosmological scenario that follows from
the model is discussed and standard quantum gravitational formalism in the
Arnowitt-Deser-Misner form is developed. General formalism is then illustrated
on Bianchi-... | [
{
"created": "Thu, 17 Feb 1994 17:59:30 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Feb 1994 05:59:29 GMT",
"version": "v2"
},
{
"created": "Sun, 19 Oct 2008 16:52:56 GMT",
"version": "v3"
}
] | 2010-04-06 | [
[
"Shtanov",
"Yuri V.",
"",
"Brown University"
],
[
"Yushchenko",
"Sergei A.",
"",
"Bogolyubov Institute, Kiev"
]
] | Conformally invariant GUT-like model including gravity based on Riemann - Cartan space-time $U_4$ is considered. Cosmological scenario that follows from the model is discussed and standard quantum gravitational formalism in the Arnowitt-Deser-Misner form is developed. General formalism is then illustrated on Bianchi-IX... |
1501.04418 | Chinmay Kalaghatgi Mr. | Chinmay Kalaghatgi, Parameswaran Ajith, K. G. Arun | Template-space metric for searches for gravitational waves from the
inspiral, merger and ringdown of binary black holes | 8 pages, 4 figures Minor Changes, version as appears in Physical
Review D 91 (124042 (2015)) | Phys. Rev. D 91, 124042 (2015) | 10.1103/PhysRevD.91.124042 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Searches for gravitational waves (GWs) from binary black holes using
interferometric GW detectors require the construction of template banks for
performing matched filtering while analyzing the data. Placement of templates
over the parameter space of binaries, as well as coincidence tests of GW
triggers from multiple... | [
{
"created": "Mon, 19 Jan 2015 08:34:47 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Jun 2015 02:45:17 GMT",
"version": "v2"
}
] | 2015-06-24 | [
[
"Kalaghatgi",
"Chinmay",
""
],
[
"Ajith",
"Parameswaran",
""
],
[
"Arun",
"K. G.",
""
]
] | Searches for gravitational waves (GWs) from binary black holes using interferometric GW detectors require the construction of template banks for performing matched filtering while analyzing the data. Placement of templates over the parameter space of binaries, as well as coincidence tests of GW triggers from multiple d... |
2008.10622 | Christopher Munna | Christopher Munna | Analytic post-Newtonian expansion of the energy and angular momentum
radiated to infinity by eccentric-orbit non-spinning extreme-mass-ratio
inspirals to 19PN | 29 pages, 3 figures | null | 10.1103/PhysRevD.102.124001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop new high-order results for the post-Newtonian (PN) expansions of
the energy and angular momentum fluxes at infinity for eccentric-orbit
extreme-mass-ratio inspirals (EMRIs) on a Schwarzschild background. The series
are derived through direct expansion of the MST solutions within the RWZ
formalism for first... | [
{
"created": "Mon, 24 Aug 2020 18:00:22 GMT",
"version": "v1"
}
] | 2020-12-09 | [
[
"Munna",
"Christopher",
""
]
] | We develop new high-order results for the post-Newtonian (PN) expansions of the energy and angular momentum fluxes at infinity for eccentric-orbit extreme-mass-ratio inspirals (EMRIs) on a Schwarzschild background. The series are derived through direct expansion of the MST solutions within the RWZ formalism for first-o... |
gr-qc/9712050 | J. Frauendiener | J. Frauendiener | Numerical treatment of the hyperboloidal initial value problem for the
vacuum Einstein equations. I. The conformal field equations | 19 pages, LaTeX2e | Phys. Rev. D 58, 064002 (1998) | 10.1103/PhysRevD.58.064002 | null | gr-qc | null | This is the first in a series of articles on the numerical solution of
Friedrich's conformal field equations for Einstein's theory of gravity. We will
discuss in this paper why one should be interested in applying the conformal
method to physical problems and why there is good hope that this might even be
a good idea... | [
{
"created": "Thu, 11 Dec 1997 15:23:00 GMT",
"version": "v1"
}
] | 2016-08-25 | [
[
"Frauendiener",
"J.",
""
]
] | This is the first in a series of articles on the numerical solution of Friedrich's conformal field equations for Einstein's theory of gravity. We will discuss in this paper why one should be interested in applying the conformal method to physical problems and why there is good hope that this might even be a good idea f... |
gr-qc/9709045 | null | M. Bianchi, M.Brunetti, E.Coccia, F.Fucito, J.A. Lobo | Cross Section of a Resonant-Mass Detector for Scalar Gravitational Waves | 25 pages, latex file | Phys.Rev.D57:4525-4534,1998 | 10.1103/PhysRevD.57.4525 | ROM2F/97/31 | gr-qc hep-th | null | Gravitationally coupled scalar fields, originally introduced by Jordan, Brans
and Dicke to account for a non constant gravitational coupling, are a
prediction of many non-Einsteinian theories of gravity not excluding
perturbative formulations of String Theory. In this paper, we compute the cross
sections for scatteri... | [
{
"created": "Thu, 18 Sep 1997 09:23:35 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Bianchi",
"M.",
""
],
[
"Brunetti",
"M.",
""
],
[
"Coccia",
"E.",
""
],
[
"Fucito",
"F.",
""
],
[
"Lobo",
"J. A.",
""
]
] | Gravitationally coupled scalar fields, originally introduced by Jordan, Brans and Dicke to account for a non constant gravitational coupling, are a prediction of many non-Einsteinian theories of gravity not excluding perturbative formulations of String Theory. In this paper, we compute the cross sections for scattering... |
gr-qc/0108077 | Claudio Simeone | Hernan De Cicco and Claudio Simeone | Comment on the transition amplitude for toy universe models | 13 pages 13 pages | Gen.Rel.Grav. 31 (1999) 1225-1235 | null | null | gr-qc | null | The parametrized system called ``ideal clock'' is turned into an ordinary
gauge system and quantized by means of a path integral in which canonical
gauges are admissible. Then the possibility of applying the results to obtain
the transition amplitude for empty minisuperspaces, and the restrictions
arising from the to... | [
{
"created": "Thu, 30 Aug 2001 20:48:37 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"De Cicco",
"Hernan",
""
],
[
"Simeone",
"Claudio",
""
]
] | The parametrized system called ``ideal clock'' is turned into an ordinary gauge system and quantized by means of a path integral in which canonical gauges are admissible. Then the possibility of applying the results to obtain the transition amplitude for empty minisuperspaces, and the restrictions arising from the topo... |
2104.11376 | Alexander Simpson | Edgardo Franzin, Stefano Liberati, Jacopo Mazza, Alex Simpson, Matt
Visser | Charged black-bounce spacetimes | V1: 27 pages, 0 figures, 61 references. V2: Still 27 pages, 0
figures, no physics changes, 6 references added (now 67 references). V3:
Published and final version, now 29 pages, 2 figures added, minor discussion
added on page 17, 2 references added (now 69 references) | JCAP07(2021)036 | 10.1088/1475-7516/2021/07/036 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given the recent development of rotating black-bounce-Kerr spacetimes, for
both theoretical and observational purposes it becomes interesting to see
whether it might be possible to construct black-bounce variants of the entire
Kerr-Newman family. Specifically, herein we shall consider
black-bounce-Reissner-Nordstr\"o... | [
{
"created": "Fri, 23 Apr 2021 02:04:39 GMT",
"version": "v1"
},
{
"created": "Mon, 3 May 2021 21:35:15 GMT",
"version": "v2"
},
{
"created": "Mon, 4 Oct 2021 02:47:58 GMT",
"version": "v3"
}
] | 2021-10-05 | [
[
"Franzin",
"Edgardo",
""
],
[
"Liberati",
"Stefano",
""
],
[
"Mazza",
"Jacopo",
""
],
[
"Simpson",
"Alex",
""
],
[
"Visser",
"Matt",
""
]
] | Given the recent development of rotating black-bounce-Kerr spacetimes, for both theoretical and observational purposes it becomes interesting to see whether it might be possible to construct black-bounce variants of the entire Kerr-Newman family. Specifically, herein we shall consider black-bounce-Reissner-Nordstr\"om ... |
1002.3919 | Gonzalo Olmo | Carlos Barragan, Gonzalo J. Olmo, Helios Sanchis-Alepuz | Avoiding the Big Bang Singularity with Palatini f(R) Theories | 3 pages, 1 figure, ws-procs975x65.cls to appear in the Proceedings of
12th Marcel Grossmann Meeting, Paris (France) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that there exist modified theories of gravity in which the metric
satisfies second-order equations and in which the Big Bang singularity is
replaced by a cosmic bounce without violating any energy condition. In fact,
the bounce is possible even for presureless dust. We give a characterization of
such theories... | [
{
"created": "Sat, 20 Feb 2010 17:24:15 GMT",
"version": "v1"
}
] | 2010-02-23 | [
[
"Barragan",
"Carlos",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Sanchis-Alepuz",
"Helios",
""
]
] | We show that there exist modified theories of gravity in which the metric satisfies second-order equations and in which the Big Bang singularity is replaced by a cosmic bounce without violating any energy condition. In fact, the bounce is possible even for presureless dust. We give a characterization of such theories, ... |
1508.07007 | Alan Kostelecky | Alan Kostelecky, Jay D. Tasson | Constraints on Lorentz violation from gravitational Cherenkov radiation | 10 pages, accepted for publication in Physics Letters B | Phys.Lett. B749:551-559, 2015 | 10.1016/j.physletb.2015.08.060 | IUHET 596, August 2015 | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Limits on gravitational Cherenkov radiation by cosmic rays are obtained and
used to constrain coefficients for Lorentz violation in the gravity sector
associated with operators of even mass dimensions, including
orientation-dependent effects. We use existing data from cosmic-ray telescopes
to obtain conservative two-... | [
{
"created": "Thu, 27 Aug 2015 20:13:20 GMT",
"version": "v1"
}
] | 2016-03-23 | [
[
"Kostelecky",
"Alan",
""
],
[
"Tasson",
"Jay D.",
""
]
] | Limits on gravitational Cherenkov radiation by cosmic rays are obtained and used to constrain coefficients for Lorentz violation in the gravity sector associated with operators of even mass dimensions, including orientation-dependent effects. We use existing data from cosmic-ray telescopes to obtain conservative two-si... |
2303.17516 | Lu\'is Filipe Costa | L. Filipe O. Costa, Jos\'e Nat\'ario, F. Frutos-Alfaro, Michael Soffel | Reference frames in General Relativity and the galactic rotation curves | 30 pages, 10 figures. Slightly improved Section III.D, typos
corrected, references added. Supplemental material is provided in the
ancillary Mathematica files "NUTmetrics.nb" and "BGmetric.nb". Matches the
final version published in PRD as an Editor's Suggestion | Phys. Rev. D 108, 044056 (2023) | 10.1103/PhysRevD.108.044056 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The physical interpretation of the exact solutions of the Einstein field
equations is, in general, a challenging task, part of the difficulties lying in
the significance of the coordinate system. We discuss the extension of the
International Astronomical Union (IAU) reference system to the exact theory. It
is seen th... | [
{
"created": "Thu, 30 Mar 2023 16:33:22 GMT",
"version": "v1"
},
{
"created": "Wed, 31 May 2023 21:44:02 GMT",
"version": "v2"
},
{
"created": "Fri, 26 Jan 2024 18:45:38 GMT",
"version": "v3"
}
] | 2024-01-29 | [
[
"Costa",
"L. Filipe O.",
""
],
[
"Natário",
"José",
""
],
[
"Frutos-Alfaro",
"F.",
""
],
[
"Soffel",
"Michael",
""
]
] | The physical interpretation of the exact solutions of the Einstein field equations is, in general, a challenging task, part of the difficulties lying in the significance of the coordinate system. We discuss the extension of the International Astronomical Union (IAU) reference system to the exact theory. It is seen that... |
gr-qc/0305075 | Ujjal Debnath | Ujjal Debnath, Subenoy Chakraborty and John D. Barrow | Quasi-Spherical Gravitational Collapse in Any Dimension | 11 Latex pages, No figure, Revtex style | Gen.Rel.Grav. 36 (2004) 231-243 | 10.1023/B:GERG.0000010472.10539.46 | null | gr-qc | null | We study the occurrence and nature of naked singularities for a dust model
with non-zero cosmological constant in ($n+2$)-dimensional Szekeres space-times
(which possess no Killing vectors) for $n\geq 2$. We find that central
shell-focusing singularities may be locally naked in higher dimensions but
depend sensitivel... | [
{
"created": "Tue, 20 May 2003 10:33:09 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Debnath",
"Ujjal",
""
],
[
"Chakraborty",
"Subenoy",
""
],
[
"Barrow",
"John D.",
""
]
] | We study the occurrence and nature of naked singularities for a dust model with non-zero cosmological constant in ($n+2$)-dimensional Szekeres space-times (which possess no Killing vectors) for $n\geq 2$. We find that central shell-focusing singularities may be locally naked in higher dimensions but depend sensitively ... |
1804.10843 | Majid Abdollahi Zadeh | M. Abdollahi Zadeh, A.Sheykhi | Stability of HDE model with sign-changeable interaction in Brans-Dicke
theory | 19pages, 22figures | Canadian Journal of Physics, 97, 726, 2018, | 10.1139/cjp-2018-0413 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Brans-Dicke (BD) theory of gravity and explore the
cosmological implications of the sign-changeable interacting holographic dark
energy (HDE) model in the background of Friedmann-Robertson-Walker (FRW)
universe. As the system's infrared (IR) cutoff, we choose the future event
horizon, the Granda-Olive... | [
{
"created": "Sat, 28 Apr 2018 19:11:48 GMT",
"version": "v1"
}
] | 2020-01-08 | [
[
"Zadeh",
"M. Abdollahi",
""
],
[
"Sheykhi",
"A.",
""
]
] | We consider the Brans-Dicke (BD) theory of gravity and explore the cosmological implications of the sign-changeable interacting holographic dark energy (HDE) model in the background of Friedmann-Robertson-Walker (FRW) universe. As the system's infrared (IR) cutoff, we choose the future event horizon, the Granda-Olivero... |
gr-qc/0512034 | Anthony N. Aguirre | Anthony Aguirre and Matthew C. Johnson | Two Tunnels to Inflation | 16 PRD-style pages, 13 figures. PRD, in press. Revised to match
published version | Phys.Rev. D73 (2006) 123529 | 10.1103/PhysRevD.73.123529 | null | gr-qc astro-ph hep-th | null | We investigate the formation via tunneling of inflating (false-vacuum)
bubbles in a true-vacuum background, and the reverse process. Using effective
potentials from the junction condition formalism, all true- and false-vacuum
bubble solutions with positive interior and exterior cosmological constant, and
arbitrary ma... | [
{
"created": "Tue, 6 Dec 2005 00:01:14 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Dec 2005 00:13:56 GMT",
"version": "v2"
},
{
"created": "Thu, 15 Jun 2006 18:35:47 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Aguirre",
"Anthony",
""
],
[
"Johnson",
"Matthew C.",
""
]
] | We investigate the formation via tunneling of inflating (false-vacuum) bubbles in a true-vacuum background, and the reverse process. Using effective potentials from the junction condition formalism, all true- and false-vacuum bubble solutions with positive interior and exterior cosmological constant, and arbitrary mass... |
gr-qc/9511050 | David Garfinkle | David Garfinkle and Steven G. Harris | Ricci Fall-off in Static, Globally Hyperbolic, Non-singular Spacetimes | 9 pages, amstex, no figures | Class.Quant.Grav. 14 (1997) 139-151 | 10.1088/0264-9381/14/1/015 | null | gr-qc | null | What restrictions are there on a spacetime for which the Ricci curvature is
such as to produce convergence of geodesics (such as the preconditions for the
Singularity Theorems) but for which there are no singularities? We answer this
question for a restricted class of spacetimes: static, geodesically complete,
and gl... | [
{
"created": "Fri, 17 Nov 1995 00:50:52 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Garfinkle",
"David",
""
],
[
"Harris",
"Steven G.",
""
]
] | What restrictions are there on a spacetime for which the Ricci curvature is such as to produce convergence of geodesics (such as the preconditions for the Singularity Theorems) but for which there are no singularities? We answer this question for a restricted class of spacetimes: static, geodesically complete, and glob... |
1503.08747 | Viraj Sanghai | Viraj A. A. Sanghai and Timothy Clifton | Post-Newtonian Cosmological Modelling | 22 pages, 5 figures, v2: Published version, v4: Corrections to
published version | Phys. Rev. D 91, 103532 (2015) (erratum: Phys. Rev. D 93, 089903
(2016)) | 10.1103/PhysRevD.91.103532 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a new approach to building cosmological models, in which small
pieces of perturbed Minkowski space are joined together at reflection-symmetric
boundaries in order to form a global, dynamical space-time. Each piece of this
patchwork universe is described using post-Newtonian gravitational physics,
with the ... | [
{
"created": "Mon, 30 Mar 2015 17:19:06 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Jun 2015 11:31:15 GMT",
"version": "v2"
},
{
"created": "Thu, 3 Sep 2015 14:11:38 GMT",
"version": "v3"
},
{
"created": "Thu, 17 Mar 2016 12:46:36 GMT",
"version": "v4"
}
] | 2016-04-12 | [
[
"Sanghai",
"Viraj A. A.",
""
],
[
"Clifton",
"Timothy",
""
]
] | We develop a new approach to building cosmological models, in which small pieces of perturbed Minkowski space are joined together at reflection-symmetric boundaries in order to form a global, dynamical space-time. Each piece of this patchwork universe is described using post-Newtonian gravitational physics, with the la... |
0909.4771 | David P. Rideout | Maqbool Ahmed and David Rideout | Indications of de Sitter Spacetime from Classical Sequential Growth
Dynamics of Causal Sets | 16 pages, 10 figures; minor changes | Phys.Rev.D81:083528,2010 | 10.1103/PhysRevD.81.083528 | pi-qf-147 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A large class of the dynamical laws for causal sets described by a classical
process of sequential growth yield a cyclic universe, whose cycles of expansion
and contraction are punctuated by single `origin elements' of the causal set.
We present evidence that the effective dynamics of the immediate future of one
of t... | [
{
"created": "Fri, 25 Sep 2009 19:22:06 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Nov 2009 22:44:52 GMT",
"version": "v2"
}
] | 2010-05-12 | [
[
"Ahmed",
"Maqbool",
""
],
[
"Rideout",
"David",
""
]
] | A large class of the dynamical laws for causal sets described by a classical process of sequential growth yield a cyclic universe, whose cycles of expansion and contraction are punctuated by single `origin elements' of the causal set. We present evidence that the effective dynamics of the immediate future of one of the... |
gr-qc/0607030 | Rahmede Christoph | F. Girelli, S. Liberati, R. Percacci, C. Rahmede (SISSA and INFN) | Modified Dispersion Relations from the Renormalization Group of Gravity | revtex4, 9 pages, updated to match published version | Class.Quant.Grav.24:3995-4008,2007 | 10.1088/0264-9381/24/16/003 | null | gr-qc hep-th | null | We show that the running of gravitational couplings, together with a suitable
identification of the renormalization group scale can give rise to modified
dispersion relations for massive particles. This result seems to be compatible
with both the frameworks of effective field theory with Lorentz invariance
violation ... | [
{
"created": "Fri, 7 Jul 2006 17:49:06 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Aug 2007 12:13:38 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Girelli",
"F.",
"",
"SISSA and INFN"
],
[
"Liberati",
"S.",
"",
"SISSA and INFN"
],
[
"Percacci",
"R.",
"",
"SISSA and INFN"
],
[
"Rahmede",
"C.",
"",
"SISSA and INFN"
]
] | We show that the running of gravitational couplings, together with a suitable identification of the renormalization group scale can give rise to modified dispersion relations for massive particles. This result seems to be compatible with both the frameworks of effective field theory with Lorentz invariance violation an... |
1305.4424 | Eric Mart\'inez-Pascual | E. Mart\'inez-Pascual | Refined algebraic quantisation in a system with nonconstant gauge
invariant structure functions | 15 pages v2. Minor comments and clarifications added | J. Math. Phys. 54, 082101 (2013) | 10.1063/1.4817485 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a previous work [J. Math. Phys. 52, 123504 (2011)], refined algebraic
quantisation (RAQ) within a family of classically equivalent constrained
Hamiltonian systems that are related to each other by rescaling one
momentum-type constraint was investigated. In the present work, the first steps
to generalise this analy... | [
{
"created": "Mon, 20 May 2013 02:20:20 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Oct 2013 01:51:25 GMT",
"version": "v2"
}
] | 2015-06-16 | [
[
"Martínez-Pascual",
"E.",
""
]
] | In a previous work [J. Math. Phys. 52, 123504 (2011)], refined algebraic quantisation (RAQ) within a family of classically equivalent constrained Hamiltonian systems that are related to each other by rescaling one momentum-type constraint was investigated. In the present work, the first steps to generalise this analysi... |
1706.02279 | Daris Samart | Xuyang Liu (Bohai U.), Phongpichit Channuie (Walailak U.), Daris
Samart (Rajamangala U. Tech. Isan) | Cosmological dynamics of magnetic Bianchi I in viable $f(R)$ models of
gravity | 18 pages, 2 figures. Accepted for publication in physics of the dark
universe. Manuscript incorporates responses to referee comments and adds
references | Phys.Dark Univ. 17 (2017) 52-62 | 10.1016/j.dark.2017.08.001 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Standard dynamical system analysis of Einstein-Maxwell equation in $f(R)$
theories is considered in this work. We investigate cosmological dynamics of a
uniform magnetic field in the Orthogonal Spatially Homogeneous (OSH) Bianchi
type I universe with viable $f(R)$ models of gravity. In this work, the $f(R) =
R -\alph... | [
{
"created": "Wed, 7 Jun 2017 17:40:43 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Aug 2017 02:29:36 GMT",
"version": "v2"
}
] | 2018-01-09 | [
[
"Liu",
"Xuyang",
"",
"Bohai U."
],
[
"Channuie",
"Phongpichit",
"",
"Walailak U."
],
[
"Samart",
"Daris",
"",
"Rajamangala U. Tech. Isan"
]
] | Standard dynamical system analysis of Einstein-Maxwell equation in $f(R)$ theories is considered in this work. We investigate cosmological dynamics of a uniform magnetic field in the Orthogonal Spatially Homogeneous (OSH) Bianchi type I universe with viable $f(R)$ models of gravity. In this work, the $f(R) = R -\alpha ... |
1006.5619 | Timothy Clifton | Timothy Clifton, M\'aximo Ba\~nados and Constantinos Skordis | The Parameterised Post-Newtonian Limit of Bimetric Theories of Gravity | 36 pages | Class.Quant.Grav.27:235020,2010 | 10.1088/0264-9381/27/23/235020 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the post-Newtonian limit of a general class of bimetric theories
of gravity, in which both metrics are dynamical. The established parameterised
post-Newtonian approach is followed as closely as possible, although new
potentials are found that do not exist within the standard frame-work. It is
found that t... | [
{
"created": "Tue, 29 Jun 2010 14:01:11 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Dec 2010 10:04:38 GMT",
"version": "v2"
}
] | 2010-12-07 | [
[
"Clifton",
"Timothy",
""
],
[
"Bañados",
"Máximo",
""
],
[
"Skordis",
"Constantinos",
""
]
] | We consider the post-Newtonian limit of a general class of bimetric theories of gravity, in which both metrics are dynamical. The established parameterised post-Newtonian approach is followed as closely as possible, although new potentials are found that do not exist within the standard frame-work. It is found that the... |
1811.08931 | Katerina Chatziioannou | Andoni Torres-Rivas, Katerina Chatziioannou, Andreas Bauswein, James
Alexander Clark | Observing the post-merger signal of GW170817-like events with improved
gravitational-wave detectors | 12 pages, 13 figures, minor changes to match published version | Phys. Rev. D 99, 044014 (2019) | 10.1103/PhysRevD.99.044014 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recent detection of a neutron star binary through gravitational waves,
GW170817, has offered another source of information about the properties of
cold supranuclear matter. Information from the signal emitted before the
neutron stars merged has been used to study the equation of state of these
bodies, however, an... | [
{
"created": "Wed, 21 Nov 2018 20:13:03 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Dec 2018 17:56:49 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Feb 2019 15:36:40 GMT",
"version": "v3"
}
] | 2019-02-20 | [
[
"Torres-Rivas",
"Andoni",
""
],
[
"Chatziioannou",
"Katerina",
""
],
[
"Bauswein",
"Andreas",
""
],
[
"Clark",
"James Alexander",
""
]
] | The recent detection of a neutron star binary through gravitational waves, GW170817, has offered another source of information about the properties of cold supranuclear matter. Information from the signal emitted before the neutron stars merged has been used to study the equation of state of these bodies, however, any ... |
1408.4270 | Andrea Geralico | Donato Bini and Andrea Geralico | Superposition of Weyl solutions: circular orbits | 17 pages, 8 figures; published version | IJMPD 13, 983 (2004) | 10.1142/S0218271804005031 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Circular orbits are examined in static spacetimes belonging to the Weyl class
of vacuum solutions which represent (nonlinear) superposition of the
gravitational fields generated by certain collinear distributions of matter. In
particular, solutions representing two and three Chazy-Curzon particles - all
of them endow... | [
{
"created": "Tue, 19 Aug 2014 09:51:21 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
]
] | Circular orbits are examined in static spacetimes belonging to the Weyl class of vacuum solutions which represent (nonlinear) superposition of the gravitational fields generated by certain collinear distributions of matter. In particular, solutions representing two and three Chazy-Curzon particles - all of them endowed... |
1504.07119 | Ryusuke Jinno | Yohei Ema, Ryusuke Jinno, Kyohei Mukaida, Kazunori Nakayama | Particle Production after Inflation with Non-minimal Derivative Coupling
to Gravity | 25 pages | null | 10.1088/1475-7516/2015/10/020 | UT-15-15, IPMU-15-0056 | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study cosmological evolution after inflation in models with non-minimal
derivative coupling to gravity. The background dynamics is solved and particle
production associated with rapidly oscillating Hubble parameter is studied in
detail. In addition, production of gravitons through the non-minimal derivative
coupli... | [
{
"created": "Fri, 24 Apr 2015 17:04:12 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Sep 2015 14:34:05 GMT",
"version": "v2"
}
] | 2015-10-14 | [
[
"Ema",
"Yohei",
""
],
[
"Jinno",
"Ryusuke",
""
],
[
"Mukaida",
"Kyohei",
""
],
[
"Nakayama",
"Kazunori",
""
]
] | We study cosmological evolution after inflation in models with non-minimal derivative coupling to gravity. The background dynamics is solved and particle production associated with rapidly oscillating Hubble parameter is studied in detail. In addition, production of gravitons through the non-minimal derivative coupling... |
1306.3307 | Vee-Liem Saw | Vee-Liem Saw, Lock Yue Chew | Curved traversable wormholes in (3+1)-dimensional spacetime | 33 pages, 13 figures. v3: Added an explicit note on the types of
initial conditions for the safe geodesic through the catenary wormhole in
Section IV B, and added Section IV C on the radial function | General Relativity and Gravitation, 46, 1655, 2014 | 10.1007/s10714-013-1655-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the general method of constructing curved traversable wormholes in
(3+1)-d spacetime and proceed to thoroughly discuss the physics of a zero tidal
force metric without cross-terms. The (3+1)-d solution is compared with the
recently studied lower-dimensional counterpart, where we identify that the much
rich... | [
{
"created": "Fri, 14 Jun 2013 06:37:03 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Jun 2013 05:06:36 GMT",
"version": "v2"
},
{
"created": "Sun, 8 Dec 2013 08:26:57 GMT",
"version": "v3"
}
] | 2014-04-18 | [
[
"Saw",
"Vee-Liem",
""
],
[
"Chew",
"Lock Yue",
""
]
] | We present the general method of constructing curved traversable wormholes in (3+1)-d spacetime and proceed to thoroughly discuss the physics of a zero tidal force metric without cross-terms. The (3+1)-d solution is compared with the recently studied lower-dimensional counterpart, where we identify that the much richer... |
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