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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0211105 | Reinhard Prix | R. Prix, J. Novak and G.L. Comer | Stationary structure of relativistic superfluid neutron stars | 5 pages, 2 figures. Conference proceedings for the 26th Spanish
Relativity Meeting (ERE 2002), Menorca, Spain, 22-24 Sept. 2002 | null | null | null | gr-qc astro-ph | null | We describe recent progress in the numerical study of the structure of
rapidly rotating superfluid neutron star models in full general relativity. The
superfluid neutron star is described by a model of two interpenetrating and
interacting fluids, one representing the superfluid neutrons and the second
consisting of t... | [
{
"created": "Fri, 29 Nov 2002 14:27:05 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Prix",
"R.",
""
],
[
"Novak",
"J.",
""
],
[
"Comer",
"G. L.",
""
]
] | We describe recent progress in the numerical study of the structure of rapidly rotating superfluid neutron star models in full general relativity. The superfluid neutron star is described by a model of two interpenetrating and interacting fluids, one representing the superfluid neutrons and the second consisting of the... |
0904.1363 | Hamid Reza Sepangi | A. Borzou and H. R. Sepangi | Unification of gravity and electromagnetism revisited | 10 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within the context of a $5D$ space-time, we construct a unified theory of
gravity and electromagnetism from which the Einstein field equations and
Maxwell equations emerge, with homogenous Maxwell equations appearing
naturally. We also introduce a well-defined five dimensional energy-momentum
tensor consistent with o... | [
{
"created": "Wed, 8 Apr 2009 15:15:55 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Nov 2009 09:24:46 GMT",
"version": "v2"
},
{
"created": "Wed, 16 Jun 2010 08:30:42 GMT",
"version": "v3"
}
] | 2010-06-17 | [
[
"Borzou",
"A.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | Within the context of a $5D$ space-time, we construct a unified theory of gravity and electromagnetism from which the Einstein field equations and Maxwell equations emerge, with homogenous Maxwell equations appearing naturally. We also introduce a well-defined five dimensional energy-momentum tensor consistent with our... |
1901.09946 | Arkadiusz B{\l}aut | Arkadiusz B{\l}aut | Laser interferometer response to scalar massive gravitational waves | 13 pages, 2 figures | Phys. Rev. D 92, 063013, 2015 | 10.1103/PhysRevD.92.063013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the response of the gravitational wave detector to a scalar
massive plane gravitational wave. We give the compact form of the response and
discuss its angular and frequency characteristics. The derivations is carried
out in the conformal and the synchronous gauges and the equivalence of the two
approaches ... | [
{
"created": "Mon, 28 Jan 2019 19:07:37 GMT",
"version": "v1"
}
] | 2019-02-06 | [
[
"Błaut",
"Arkadiusz",
""
]
] | We analyze the response of the gravitational wave detector to a scalar massive plane gravitational wave. We give the compact form of the response and discuss its angular and frequency characteristics. The derivations is carried out in the conformal and the synchronous gauges and the equivalence of the two approaches is... |
1707.05268 | Sylvia Zhu | Sylvia J. Zhu, Maria Alessandra Papa, Sin\'ead Walsh | A new veto for continuous gravitational wave searches | 10 pages, 6 figures, 2 tables | Phys. Rev. D 96, 124007 (2017) | 10.1103/PhysRevD.96.124007 | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | We present a new veto procedure to distinguish between continuous
gravitational wave (CW) signals and the detector artifacts that can mimic their
behavior. The veto procedure exploits the fact that a long-lasting coherent
disturbance is less likely than a real signal to exhibit a Doppler modulation
of astrophysical o... | [
{
"created": "Mon, 17 Jul 2017 16:25:43 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Sep 2017 15:17:31 GMT",
"version": "v2"
}
] | 2017-12-13 | [
[
"Zhu",
"Sylvia J.",
""
],
[
"Papa",
"Maria Alessandra",
""
],
[
"Walsh",
"Sinéad",
""
]
] | We present a new veto procedure to distinguish between continuous gravitational wave (CW) signals and the detector artifacts that can mimic their behavior. The veto procedure exploits the fact that a long-lasting coherent disturbance is less likely than a real signal to exhibit a Doppler modulation of astrophysical ori... |
1511.05439 | Francesco Becattini | F. Becattini, E. Grossi (University of Florence) | Quantum relativistic fluid at global thermodynamic equilibrium in curved
spacetime | 5 pages | null | null | null | gr-qc hep-th nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new approach to the problem of the thermodynamical equilibrium
of a quantum relativistic fluid in a curved spacetime in the limit of small
curvature. We calculate the mean value of local operators by expanding the
four-temperature Killing vector field in Riemann normal coordinates about the
same spacetim... | [
{
"created": "Tue, 17 Nov 2015 15:36:20 GMT",
"version": "v1"
}
] | 2015-11-18 | [
[
"Becattini",
"F.",
"",
"University of Florence"
],
[
"Grossi",
"E.",
"",
"University of Florence"
]
] | We present a new approach to the problem of the thermodynamical equilibrium of a quantum relativistic fluid in a curved spacetime in the limit of small curvature. We calculate the mean value of local operators by expanding the four-temperature Killing vector field in Riemann normal coordinates about the same spacetime ... |
2311.07671 | Hideki Maeda | Hideki Maeda and Jiri Podolsky | Charged rotating BTZ solution revisited: New coordinates and algebraic
classifications | 31 pages, no figure, 1 table; v2, final version to appear in
Classical and Quantum Gravity | Class.Quant.Grav. 41 (2024) 11, 115012 | 10.1088/1361-6382/ad422d | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the charged rotating Ba\~nados-Teitelboim-Zanelli (BTZ) solution
in the three-dimensional Einstein-Maxwell-$\Lambda$ system. After the erroneous
announcement of its discovery at the end of the original BTZ paper in 1992, the
solution was first obtained by Cl\'ement in the paper published in 1996 by
coordin... | [
{
"created": "Mon, 13 Nov 2023 19:00:59 GMT",
"version": "v1"
},
{
"created": "Wed, 1 May 2024 00:33:27 GMT",
"version": "v2"
}
] | 2024-05-10 | [
[
"Maeda",
"Hideki",
""
],
[
"Podolsky",
"Jiri",
""
]
] | We revisit the charged rotating Ba\~nados-Teitelboim-Zanelli (BTZ) solution in the three-dimensional Einstein-Maxwell-$\Lambda$ system. After the erroneous announcement of its discovery at the end of the original BTZ paper in 1992, the solution was first obtained by Cl\'ement in the paper published in 1996 by coordinat... |
gr-qc/9904031 | Carlos F. Sopuerta | M.A.G. Bonilla and C.F. Sopuerta | Super-energy tensor for space-times with vanishing scalar curvature | 13 pages, LaTeX 2.09. To be published in Journal of Mathematical
Physics | J.Math.Phys. 40 (1999) 3053-3062 | 10.1063/1.532743 | null | gr-qc | null | A four-index tensor is constructed with terms both quadratic in the Riemann
tensor and linear in its second derivatives, which has zero divergence for
space-times with vanishing scalar curvature. This tensor reduces in vacuum to
the Bel-Robinson tensor. Furthermore, the completely timelike component
referred to any o... | [
{
"created": "Wed, 14 Apr 1999 09:10:44 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Bonilla",
"M. A. G.",
""
],
[
"Sopuerta",
"C. F.",
""
]
] | A four-index tensor is constructed with terms both quadratic in the Riemann tensor and linear in its second derivatives, which has zero divergence for space-times with vanishing scalar curvature. This tensor reduces in vacuum to the Bel-Robinson tensor. Furthermore, the completely timelike component referred to any obs... |
2104.00485 | Seth Asante | Seth K. Asante, Bianca Dittrich, Jos\'e Padua-Arguelles | Effective Spin Foam Models for Lorentzian Quantum Gravity | 34 pages, 15 figures (Accepted to Classical and Quantum Gravity
Journal) | null | 10.1088/1361-6382/ac1b44 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Making the Lorentzian path integral for quantum gravity well-defined and
computable has been a long standing challenge. In this work we adopt the
recently proposed effective spin foam models to the Lorentzian case. This
defines a path integral over discrete Lorentzian quantum geometric
configurations, which include m... | [
{
"created": "Thu, 1 Apr 2021 14:13:31 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Aug 2021 19:31:19 GMT",
"version": "v2"
}
] | 2021-09-22 | [
[
"Asante",
"Seth K.",
""
],
[
"Dittrich",
"Bianca",
""
],
[
"Padua-Arguelles",
"José",
""
]
] | Making the Lorentzian path integral for quantum gravity well-defined and computable has been a long standing challenge. In this work we adopt the recently proposed effective spin foam models to the Lorentzian case. This defines a path integral over discrete Lorentzian quantum geometric configurations, which include met... |
2406.02466 | Katy Clough Dr | Katy Clough, Tim Dietrich and Sebastian Khan | What no one has seen before: gravitational waveforms from warp drive
collapse | 12 pages, 6 figures, plus appendix. Comments welcome! | null | 10.33232/001c.121868 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Despite originating in science fiction, warp drives have a concrete
description in general relativity, with Alcubierre first proposing a spacetime
metric that supported faster-than-light travel. Whilst there are numerous
practical barriers to their implementation in real life, including a
requirement for negative ene... | [
{
"created": "Tue, 4 Jun 2024 16:34:41 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Jul 2024 09:22:40 GMT",
"version": "v2"
}
] | 2024-08-02 | [
[
"Clough",
"Katy",
""
],
[
"Dietrich",
"Tim",
""
],
[
"Khan",
"Sebastian",
""
]
] | Despite originating in science fiction, warp drives have a concrete description in general relativity, with Alcubierre first proposing a spacetime metric that supported faster-than-light travel. Whilst there are numerous practical barriers to their implementation in real life, including a requirement for negative energ... |
gr-qc/0306001 | Carsten Gundlach | C. Gundlach and J. M. Martin-Garcia | Kinematics of discretely self-similar spherically symmetric spacetimes | RevTex, 11 pages, 7 eps figures | null | 10.1103/PhysRevD.68.064019 | null | gr-qc | null | We summarize the consequences of the twin assumptions of (discrete)
self-similarity and spherical symmetry for the global structure of a spacetime.
All such spacetimes can be constructed from two building blocks, the "fan" and
"splash". Each building block contains one radial null geodesic that is
invariant under the... | [
{
"created": "Sat, 31 May 2003 20:51:55 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Gundlach",
"C.",
""
],
[
"Martin-Garcia",
"J. M.",
""
]
] | We summarize the consequences of the twin assumptions of (discrete) self-similarity and spherical symmetry for the global structure of a spacetime. All such spacetimes can be constructed from two building blocks, the "fan" and "splash". Each building block contains one radial null geodesic that is invariant under the s... |
1911.01739 | Behnam Pourhassan | Mir Hameeda, Behnam Pourhassan, Mir Faizal, C. P. Masroor, Rizwan Ul
Haq Ansari, P. K. Suresh | Modified Theory of Gravity and Clustering of Multi-Component System of
Galaxies | Published by EPJC including 5 figures | Eur. Phys. J. C (2019) 79:769 | 10.1140/epjc/s10052-019-7281-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we analyze the clustering of galaxies using a modified theory
of gravity, in which the field content of general relativity has been be
increased. This increasing in the field content of general relativity changes
the large distance behavior of the theory, and in weak field approximation, it
will also m... | [
{
"created": "Tue, 5 Nov 2019 12:17:34 GMT",
"version": "v1"
}
] | 2019-11-06 | [
[
"Hameeda",
"Mir",
""
],
[
"Pourhassan",
"Behnam",
""
],
[
"Faizal",
"Mir",
""
],
[
"Masroor",
"C. P.",
""
],
[
"Ansari",
"Rizwan Ul Haq",
""
],
[
"Suresh",
"P. K.",
""
]
] | In this paper, we analyze the clustering of galaxies using a modified theory of gravity, in which the field content of general relativity has been be increased. This increasing in the field content of general relativity changes the large distance behavior of the theory, and in weak field approximation, it will also mod... |
2308.15995 | Maria Caruana | Salvatore Capozziello, Maria Caruana, Gabriel Farrugia, Jackson Levi
Said, Joseph Sultana | Cosmic Growth in $f(T)$ Teleparallel Gravity | null | null | 10.1007/s10714-024-03204-0 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | Physical evolution of cosmological models can be tested by using expansion
data, while growth history of these models is capable of testing dynamics of
the inhomogeneous parts of energy density. The growth factor, as well as its
growth index, gives a clear indication of the performance of cosmological
models in the r... | [
{
"created": "Wed, 30 Aug 2023 12:35:50 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Sep 2023 09:11:08 GMT",
"version": "v2"
}
] | 2024-02-20 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Caruana",
"Maria",
""
],
[
"Farrugia",
"Gabriel",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Sultana",
"Joseph",
""
]
] | Physical evolution of cosmological models can be tested by using expansion data, while growth history of these models is capable of testing dynamics of the inhomogeneous parts of energy density. The growth factor, as well as its growth index, gives a clear indication of the performance of cosmological models in the reg... |
1009.0320 | Fredy Dubeibe | Jos\'e D. Sanabria-G\'omez, Jos\'e L. Hern\'andez-Pastora and F. L.
Dubeibe | Innermost stable circular orbits around magnetized rotating massive
stars | 8 pages, 3 figures | Phys.Rev.D82:124014,2010 | 10.1103/PhysRevD.82.124014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In 1998, Shibata and Sasaki [Phys. Rev. D 58, 104011 (1998)] presented an
approximate analytical formula for the radius of the innermost stable circular
orbit (ISCO) of a neutral test particle around a massive, rotating and deformed
source. In the present paper, we generalize their expression by including the
magneti... | [
{
"created": "Thu, 2 Sep 2010 03:17:23 GMT",
"version": "v1"
}
] | 2016-08-30 | [
[
"Sanabria-Gómez",
"José D.",
""
],
[
"Hernández-Pastora",
"José L.",
""
],
[
"Dubeibe",
"F. L.",
""
]
] | In 1998, Shibata and Sasaki [Phys. Rev. D 58, 104011 (1998)] presented an approximate analytical formula for the radius of the innermost stable circular orbit (ISCO) of a neutral test particle around a massive, rotating and deformed source. In the present paper, we generalize their expression by including the magnetic ... |
gr-qc/9709026 | Thomas Baumgarte | T. W. Baumgarte, G. B. Cook, M. A. Scheel, S. L. Shapiro and S. A.
Teukolsky | General Relativistic Models of Binary Neutron Stars in Quasiequilibrium | 14 pages, 8 figures, RevTeX | Phys. Rev. D 57, 7299 (1998) | 10.1103/PhysRevD.57.7299 | null | gr-qc astro-ph | null | We perform fully relativistic calculations of binary neutron stars in
corotating, circular orbit. While Newtonian gravity allows for a strict
equilibrium, a relativistic binary system emits gravitational radiation,
causing the system to lose energy and slowly spiral inwards. However, since
inspiral occurs on a time s... | [
{
"created": "Thu, 11 Sep 1997 22:22:30 GMT",
"version": "v1"
}
] | 2016-08-25 | [
[
"Baumgarte",
"T. W.",
""
],
[
"Cook",
"G. B.",
""
],
[
"Scheel",
"M. A.",
""
],
[
"Shapiro",
"S. L.",
""
],
[
"Teukolsky",
"S. A.",
""
]
] | We perform fully relativistic calculations of binary neutron stars in corotating, circular orbit. While Newtonian gravity allows for a strict equilibrium, a relativistic binary system emits gravitational radiation, causing the system to lose energy and slowly spiral inwards. However, since inspiral occurs on a time sca... |
0802.1298 | Gao Changjun | Changjun Gao, Xuelei Chen, Valerio Faraoni, You-Gen Shen | Does the mass of a black hole decrease due to the accretion of phantom
energy | 12 pages, 5 figures. PRD accepted | Phys.Rev.D78:024008,2008 | 10.1103/PhysRevD.78.024008 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | According to Babichev et al., the accretion of a phantom test fluid onto a
Schwarzschild black hole will induce the mass of the black hole to decrease,
however the backreaction was ignored in their calculation. Using new exact
solutions describing black holes in a background Friedmann-Robertson-Walker
universe, we fi... | [
{
"created": "Sun, 10 Feb 2008 01:46:47 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Jun 2008 01:46:00 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Gao",
"Changjun",
""
],
[
"Chen",
"Xuelei",
""
],
[
"Faraoni",
"Valerio",
""
],
[
"Shen",
"You-Gen",
""
]
] | According to Babichev et al., the accretion of a phantom test fluid onto a Schwarzschild black hole will induce the mass of the black hole to decrease, however the backreaction was ignored in their calculation. Using new exact solutions describing black holes in a background Friedmann-Robertson-Walker universe, we find... |
0812.2214 | Leonardo Modesto | Leonardo Modesto | Fractal Structure of Loop Quantum Gravity | 5 pages, 5 figures | Class.Quant.Grav.26:242002,2009 | 10.1088/0264-9381/26/24/242002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we have calculated the spectral dimension of loop quantum
gravity (LQG) using simple arguments coming from the area spectrum at different
length scales. We have obtained that the spectral dimension of the spatial
section runs from 2 to 3, across a 1.5 phase, when the energy of a probe scalar
field decre... | [
{
"created": "Thu, 11 Dec 2008 18:43:44 GMT",
"version": "v1"
}
] | 2010-01-30 | [
[
"Modesto",
"Leonardo",
""
]
] | In this paper we have calculated the spectral dimension of loop quantum gravity (LQG) using simple arguments coming from the area spectrum at different length scales. We have obtained that the spectral dimension of the spatial section runs from 2 to 3, across a 1.5 phase, when the energy of a probe scalar field decrees... |
1112.3770 | Alexander Shatskiy Dr. | Darya Tretyakova, Alexander Shatskiy, Igor Novikov and Stanislav
Alexeyev | Non-singular Brans-Dicke cosmology with cosmological constant | 12 pages, 1 figure | null | 10.1103/PhysRevD.85.124059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Brans-Dicke cosmology with cosmological constant with negative w
parameter and an arbitrary (in general non-vanishing) scale factor at the Big
Bang. The field equations describe the flat universe, current observational
values for Hubble constant H and deceleration parameter q play a role of
initial condit... | [
{
"created": "Fri, 16 Dec 2011 11:53:54 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Jan 2012 08:09:00 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"Tretyakova",
"Darya",
""
],
[
"Shatskiy",
"Alexander",
""
],
[
"Novikov",
"Igor",
""
],
[
"Alexeyev",
"Stanislav",
""
]
] | We consider Brans-Dicke cosmology with cosmological constant with negative w parameter and an arbitrary (in general non-vanishing) scale factor at the Big Bang. The field equations describe the flat universe, current observational values for Hubble constant H and deceleration parameter q play a role of initial conditio... |
1901.00937 | David Anderson | David Anderson, Nicol\'as Yunes | Scalar Charges and Scaling Relations in Massless Scalar-Tensor Theories | 25 pages, 10 figures, Submitted to CQG | null | 10.1088/1361-6382/ab2eda | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The timing of binary pulsars allows us to place some of the tightest
constraints on modified theories of gravity. Perhaps some of the most
interesting and well-motivated extensions to General Relativity are
scalar-tensor theories, in which gravity is mediated by the metric tensor and a
scalar field. These theories pr... | [
{
"created": "Thu, 3 Jan 2019 23:01:24 GMT",
"version": "v1"
}
] | 2019-09-04 | [
[
"Anderson",
"David",
""
],
[
"Yunes",
"Nicolás",
""
]
] | The timing of binary pulsars allows us to place some of the tightest constraints on modified theories of gravity. Perhaps some of the most interesting and well-motivated extensions to General Relativity are scalar-tensor theories, in which gravity is mediated by the metric tensor and a scalar field. These theories pred... |
1903.01502 | Mattia Scomparin | Mattia Scomparin and Simone Vazzoler | Damping of cosmological tensor modes in Horndeski theories after
GW170817 | 16 pages | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | This paper investigates the propagation of cosmological gravitational waves
interacting with free-streaming neutrinos within the context of Horndeski
theories of gravity constrained by the detection of GW170817. We apply the
theory of cosmological perturbations to explicitly derive the
Einstein-Boltzmann equation for... | [
{
"created": "Mon, 4 Mar 2019 19:39:59 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Apr 2019 19:19:04 GMT",
"version": "v2"
}
] | 2019-04-19 | [
[
"Scomparin",
"Mattia",
""
],
[
"Vazzoler",
"Simone",
""
]
] | This paper investigates the propagation of cosmological gravitational waves interacting with free-streaming neutrinos within the context of Horndeski theories of gravity constrained by the detection of GW170817. We apply the theory of cosmological perturbations to explicitly derive the Einstein-Boltzmann equation for t... |
1703.06215 | Yerko V\'asquez | P. A. Gonz\'alez, R. A. Konoplya, Yerko V\'asquez | Quasinormal modes of a scalar field in the Einstein--Gauss--Bonnet-AdS
black hole background: Perturbative and non-perturbative branches | 9 pages, 5 figures, matches version published in PRD | Phys. Rev. D 95, 124012 (2017) | 10.1103/PhysRevD.95.124012 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has recently been found that quasinormal modes of asymptotically anti-de
Sitter (AdS) black holes in theories with higher curvature corrections may help
to describe the regime of intermediate 't Hooft coupling in the dual field
theory. Here, we consider quasinormal modes of a scalar field in the background
of sphe... | [
{
"created": "Fri, 17 Mar 2017 23:29:44 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Mar 2017 02:28:46 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Jun 2017 00:36:34 GMT",
"version": "v3"
}
] | 2017-06-14 | [
[
"González",
"P. A.",
""
],
[
"Konoplya",
"R. A.",
""
],
[
"Vásquez",
"Yerko",
""
]
] | It has recently been found that quasinormal modes of asymptotically anti-de Sitter (AdS) black holes in theories with higher curvature corrections may help to describe the regime of intermediate 't Hooft coupling in the dual field theory. Here, we consider quasinormal modes of a scalar field in the background of spheri... |
2312.11692 | Bilel Hamil | R.Oubagha, B. Hamil, M. Merad, B. C. L\"utf\"uo\u{g}lu | Van der Waals black holes in rainbow gravity | 7 figures, 16 pages | Int. J. Mod. Phys. A 39(04), 2450023 (2024) | 10.1142/S0217751X24500234 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Rajagapol et al presented an asymptotically AdS black hole metric
whose thermodynamics qualitatively mimics the behavior of the Van der Waals
fluid by treating the cosmological constant as a thermodynamic pressure. In
some studies in the literature, authors have discussed the effects of deformed
algebras su... | [
{
"created": "Mon, 18 Dec 2023 20:31:47 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Apr 2024 20:11:32 GMT",
"version": "v2"
}
] | 2024-04-12 | [
[
"Oubagha",
"R.",
""
],
[
"Hamil",
"B.",
""
],
[
"Merad",
"M.",
""
],
[
"Lütfüoğlu",
"B. C.",
""
]
] | Recently, Rajagapol et al presented an asymptotically AdS black hole metric whose thermodynamics qualitatively mimics the behavior of the Van der Waals fluid by treating the cosmological constant as a thermodynamic pressure. In some studies in the literature, authors have discussed the effects of deformed algebras such... |
2204.09855 | Jonathan Luk | Jonathan Luk and Georgios Moschidis | On the non-existence of trapped surfaces under low-regularity bounds | 20 pages. 2 figures; minor corrections; published version | null | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The emergence of trapped surfaces in solutions to the Einstein field
equations is intimately tied to the well-posedness properties of the
corresponding Cauchy problem in the low regularity regime. In this paper, we
study the question of existence of trapped surfaces already at the level of the
initial hypersurface wh... | [
{
"created": "Thu, 21 Apr 2022 02:48:52 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Jun 2023 22:35:12 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Jun 2024 20:06:43 GMT",
"version": "v3"
}
] | 2024-06-21 | [
[
"Luk",
"Jonathan",
""
],
[
"Moschidis",
"Georgios",
""
]
] | The emergence of trapped surfaces in solutions to the Einstein field equations is intimately tied to the well-posedness properties of the corresponding Cauchy problem in the low regularity regime. In this paper, we study the question of existence of trapped surfaces already at the level of the initial hypersurface when... |
2105.13886 | Antonio Pereira Jr | Gustavo P. de Brito, Oleg Melichev, Roberto Percacci, Antonio D.
Pereira | Can quantum fluctuations differentiate between standard and unimodular
gravity? | 14 pages + appendices and references | null | 10.1007/JHEP12(2021)090 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We formally prove the existence of a quantization procedure that makes the
path integral of a general diffeomorphism-invariant theory of gravity, with
fixed total spacetime volume, equivalent to that of its unimodular version.
This is achieved by means of a partial gauge fixing of diffeomorphisms together
with a care... | [
{
"created": "Thu, 27 May 2021 13:49:17 GMT",
"version": "v1"
}
] | 2022-01-05 | [
[
"de Brito",
"Gustavo P.",
""
],
[
"Melichev",
"Oleg",
""
],
[
"Percacci",
"Roberto",
""
],
[
"Pereira",
"Antonio D.",
""
]
] | We formally prove the existence of a quantization procedure that makes the path integral of a general diffeomorphism-invariant theory of gravity, with fixed total spacetime volume, equivalent to that of its unimodular version. This is achieved by means of a partial gauge fixing of diffeomorphisms together with a carefu... |
1002.4120 | Nima Khosravi | Nima Khosravi | Self-Relative (or Machian) Information: Entropy-Area Relation | null | Phys.Lett.B695:343-349,2011 | 10.1016/j.physletb.2010.11.008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The entropy-area relation of black holes is one of the important results of
theoretical physics. It is one of the few relations that is used to test
theories of quantum gravity in the absence of any experimental evidence. It
states that $4 \times \ell_P^2$ is the fundamental area that holds \textit{one}
bit of inform... | [
{
"created": "Mon, 22 Feb 2010 14:08:45 GMT",
"version": "v1"
}
] | 2011-01-27 | [
[
"Khosravi",
"Nima",
""
]
] | The entropy-area relation of black holes is one of the important results of theoretical physics. It is one of the few relations that is used to test theories of quantum gravity in the absence of any experimental evidence. It states that $4 \times \ell_P^2$ is the fundamental area that holds \textit{one} bit of informat... |
1705.05977 | Jiliang Jing | Xiongjun Fang, Xiaokai He, Jiliang Jing | Consistency between dynamical and thermodynamical stabilities for
perfect fluid in $f(R)$ theories | 18pages | Eur. Phys. J. C (2018) 78:623 | 10.1140/epjc/s10052-018-6053-0 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the stability criterions for perfect fluid in $f(R)$ theories
which is an important generalization of general relativity. Firstly, using
Wald's general variation principle, we recast Seifert's work and obtain the
dynamical stability criterion. Then using our generalized thermodynamical
criterion, we ob... | [
{
"created": "Wed, 17 May 2017 01:49:10 GMT",
"version": "v1"
},
{
"created": "Wed, 24 May 2017 01:16:42 GMT",
"version": "v2"
}
] | 2018-08-29 | [
[
"Fang",
"Xiongjun",
""
],
[
"He",
"Xiaokai",
""
],
[
"Jing",
"Jiliang",
""
]
] | We investigate the stability criterions for perfect fluid in $f(R)$ theories which is an important generalization of general relativity. Firstly, using Wald's general variation principle, we recast Seifert's work and obtain the dynamical stability criterion. Then using our generalized thermodynamical criterion, we obta... |
2303.04076 | Nasr Ahmed | Nasr Ahmed and Tarek M. Kamel | Investigating the hyperbolic and hybrid scalar field cosmologies with
varying cosmological constant in $f(R,T)$ gravity | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | This paper investigated two scalar field cosmological models in $f(R,T)$
gravity with cosmic transit and varying cosmological constant $\Lambda(t)$.The
cosmological constant tends to have a tiny positive value in the current
epoch.The scalar field pressure $p_{\phi}$ shows a sign reversal for a normal
scalar field. F... | [
{
"created": "Sat, 4 Mar 2023 07:55:15 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Mar 2023 10:59:28 GMT",
"version": "v2"
},
{
"created": "Mon, 21 Aug 2023 15:45:05 GMT",
"version": "v3"
},
{
"created": "Sun, 29 Oct 2023 16:27:35 GMT",
"version": "v4"
},
{
"cre... | 2024-07-12 | [
[
"Ahmed",
"Nasr",
""
],
[
"Kamel",
"Tarek M.",
""
]
] | This paper investigated two scalar field cosmological models in $f(R,T)$ gravity with cosmic transit and varying cosmological constant $\Lambda(t)$.The cosmological constant tends to have a tiny positive value in the current epoch.The scalar field pressure $p_{\phi}$ shows a sign reversal for a normal scalar field. For... |
1505.03034 | Saibal Ray | Dibyendu Shee, Farook Rahaman, B.K. Guha and Saibal Ray | Anisotropic stars with non-static conformal symmetry | 18 pages, 14 figures | null | 10.1007/s10509-016-2753-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have proposed a model for relativistic compact star with anisotropy and
analytically obtained exact spherically symmetric solutions describing the
interior of the dense star admitting non-static conformal symmetry. Several
features of the solutions including drawbacks of the model have been explored
and discussed.... | [
{
"created": "Mon, 11 May 2015 12:05:14 GMT",
"version": "v1"
}
] | 2016-04-27 | [
[
"Shee",
"Dibyendu",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Guha",
"B. K.",
""
],
[
"Ray",
"Saibal",
""
]
] | We have proposed a model for relativistic compact star with anisotropy and analytically obtained exact spherically symmetric solutions describing the interior of the dense star admitting non-static conformal symmetry. Several features of the solutions including drawbacks of the model have been explored and discussed. F... |
1403.3335 | Markus B. Fr\"ob | Markus B. Fr\"ob, Albert Roura, Enric Verdaguer | Riemann correlator in de Sitter including loop corrections from
conformal fields | 44 pages, 2 figures, matches published version | JCAP 07 (2014) 048 | 10.1088/1475-7516/2014/07/048 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Riemann correlator with appropriately raised indices characterizes in a
gauge-invariant way the quantum metric fluctuations around de Sitter spacetime
including loop corrections from matter fields. Specializing to conformal fields
and employing a method that selects the de Sitter-invariant vacuum in the
Poincar\'... | [
{
"created": "Thu, 13 Mar 2014 17:27:01 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Jul 2014 15:57:51 GMT",
"version": "v2"
}
] | 2014-08-01 | [
[
"Fröb",
"Markus B.",
""
],
[
"Roura",
"Albert",
""
],
[
"Verdaguer",
"Enric",
""
]
] | The Riemann correlator with appropriately raised indices characterizes in a gauge-invariant way the quantum metric fluctuations around de Sitter spacetime including loop corrections from matter fields. Specializing to conformal fields and employing a method that selects the de Sitter-invariant vacuum in the Poincar\'e ... |
1405.6702 | Behrooz Malekolkalami | Behrooz Malekolkalami, Awat Lotfi | Intrinsic Gravitomagnetism and Non-commutative effects | 9 pages, 1 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The two equations of motion for a test particle are compared with each other.
One is in the Non commutative space involving a static rigid sphere (as a
source of central force) and the other is in the usual space involving a slowly
stationary rotating sphere. The comparison tells us that, the effects of Non
commutati... | [
{
"created": "Sat, 24 May 2014 18:14:27 GMT",
"version": "v1"
}
] | 2014-05-28 | [
[
"Malekolkalami",
"Behrooz",
""
],
[
"Lotfi",
"Awat",
""
]
] | The two equations of motion for a test particle are compared with each other. One is in the Non commutative space involving a static rigid sphere (as a source of central force) and the other is in the usual space involving a slowly stationary rotating sphere. The comparison tells us that, the effects of Non commutativi... |
gr-qc/0410125 | Viqar Husain | Viqar Husain and Oliver Winkler | Quantum resolution of black hole singularities | 5 pages, version to appear in CQG | Class.Quant.Grav.22:L127-L134,2005 | 10.1088/0264-9381/22/21/L01 | null | gr-qc hep-th | null | We study the classical and quantum theory of spherically symmetric spacetimes
with scalar field coupling in general relativity. We utilise the canonical
formalism of geometrodynamics adapted to the Painleve-Gullstrand coordinates,
and present a new quantisation of the resulting field theory. We give an
explicit const... | [
{
"created": "Tue, 26 Oct 2004 15:33:34 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Jan 2005 14:57:45 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Sep 2005 18:10:52 GMT",
"version": "v3"
}
] | 2010-11-19 | [
[
"Husain",
"Viqar",
""
],
[
"Winkler",
"Oliver",
""
]
] | We study the classical and quantum theory of spherically symmetric spacetimes with scalar field coupling in general relativity. We utilise the canonical formalism of geometrodynamics adapted to the Painleve-Gullstrand coordinates, and present a new quantisation of the resulting field theory. We give an explicit constru... |
0903.1134 | David Brizuela | David Brizuela, Jose M. Martin-Garcia, Manuel Tiglio | A complete gauge-invariant formalism for arbitrary second-order
perturbations of a Schwarzschild black hole | 14 pages | Phys.Rev.D80:024021,2009 | 10.1103/PhysRevD.80.024021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using recently developed efficient symbolic manipulations tools, we present a
general gauge-invariant formalism to study arbitrary radiative $(l\geq 2)$
second-order perturbations of a Schwarzschild black hole. In particular, we
construct the second order Zerilli and Regge-Wheeler equations under the
presence of any ... | [
{
"created": "Fri, 6 Mar 2009 11:40:30 GMT",
"version": "v1"
}
] | 2009-09-02 | [
[
"Brizuela",
"David",
""
],
[
"Martin-Garcia",
"Jose M.",
""
],
[
"Tiglio",
"Manuel",
""
]
] | Using recently developed efficient symbolic manipulations tools, we present a general gauge-invariant formalism to study arbitrary radiative $(l\geq 2)$ second-order perturbations of a Schwarzschild black hole. In particular, we construct the second order Zerilli and Regge-Wheeler equations under the presence of any tw... |
1910.03616 | Marco de Cesare | Marco de Cesare, Edward Wilson-Ewing | A generalized Kasner transition for bouncing Bianchi I models in
modified gravity theories | 28 pages, 2 figures; v2: references added; accepted for publication
in JCAP | JCAP12(2019)039 | 10.1088/1475-7516/2019/12/039 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive transition rules for Kasner exponents in bouncing Bianchi I models
with generic perfect fluid matter fields for a broad class of modified gravity
theories where cosmological singularities are resolved and replaced by a
non-singular bounce. This is a generalization of results obtained previously in
limiting ... | [
{
"created": "Tue, 8 Oct 2019 18:07:52 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Dec 2019 15:02:48 GMT",
"version": "v2"
}
] | 2019-12-12 | [
[
"de Cesare",
"Marco",
""
],
[
"Wilson-Ewing",
"Edward",
""
]
] | We derive transition rules for Kasner exponents in bouncing Bianchi I models with generic perfect fluid matter fields for a broad class of modified gravity theories where cosmological singularities are resolved and replaced by a non-singular bounce. This is a generalization of results obtained previously in limiting cu... |
1011.3467 | Bijunath Patla | Robert D. Reasenberg, Enrico C. Lorenzini, Biju R. Patla, James D.
Phillips, Eugeniu E. Popescu, Emanuele Rocco, and Rajesh Thapa | A quick test of the WEP enabled by a sounding rocket | 10 pages, 2 figures, To be submitted to: Classical and Quantum
Gravity | Class.Quant.Grav.28:094014,2011 | 10.1088/0264-9381/28/9/094014 | null | gr-qc | http://creativecommons.org/licenses/publicdomain/ | We describe SR-POEM, a Galilean test of the weak equivalence principle, which
is to be conducted during the free fall portion of a sounding rocket flight.
This test of a single pair of substances is aimed at a measurement uncertainty
of \sigma(\eta) < 10-16 after averaging the results of eight separate drops,
each of... | [
{
"created": "Mon, 15 Nov 2010 18:09:19 GMT",
"version": "v1"
}
] | 2011-05-25 | [
[
"Reasenberg",
"Robert D.",
""
],
[
"Lorenzini",
"Enrico C.",
""
],
[
"Patla",
"Biju R.",
""
],
[
"Phillips",
"James D.",
""
],
[
"Popescu",
"Eugeniu E.",
""
],
[
"Rocco",
"Emanuele",
""
],
[
"Thapa",
"Rajesh",
... | We describe SR-POEM, a Galilean test of the weak equivalence principle, which is to be conducted during the free fall portion of a sounding rocket flight. This test of a single pair of substances is aimed at a measurement uncertainty of \sigma(\eta) < 10-16 after averaging the results of eight separate drops, each of 4... |
2203.14468 | Dana Jones | Dana Jones, Ling Sun, Julian Carlin, Liam Dunn, Meg Millhouse, Hannah
Middleton, Patrick Meyers, Patrick Clearwater, Deeksha Beniwal, Lucy Strang,
Andr\'es Vargas, Andrew Melatos | Validating continuous gravitational-wave candidates from a semicoherent
search using Doppler modulation and an effective point spread function | 24 pages, 15 figures | null | 10.1103/PhysRevD.106.123011 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Following up large numbers of candidates in continuous gravitational wave
searches presents a challenge, particularly in regard to computational power
and the time required to manually scrutinize each of the candidates. It is
important to design and test good follow-up procedures that are safe (i.e.,
minimize false d... | [
{
"created": "Mon, 28 Mar 2022 03:16:47 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Nov 2022 00:18:18 GMT",
"version": "v2"
}
] | 2022-12-28 | [
[
"Jones",
"Dana",
""
],
[
"Sun",
"Ling",
""
],
[
"Carlin",
"Julian",
""
],
[
"Dunn",
"Liam",
""
],
[
"Millhouse",
"Meg",
""
],
[
"Middleton",
"Hannah",
""
],
[
"Meyers",
"Patrick",
""
],
[
"Clearwate... | Following up large numbers of candidates in continuous gravitational wave searches presents a challenge, particularly in regard to computational power and the time required to manually scrutinize each of the candidates. It is important to design and test good follow-up procedures that are safe (i.e., minimize false dis... |
gr-qc/0410089 | Edward Glass | E.N. Glass and J.P. Krisch | Spinning Up Asymptotically Flat Spacetimes | Class. Quantum Grav. (to appear) | Class.Quant.Grav.21:5543-5554,2004 | 10.1088/0264-9381/21/23/015 | null | gr-qc | null | We present a method for constructing stationary, asymptotically flat,
rotating solutions of Einstein's field equations. One of the spun-up solutions
has quasilocal mass but no global mass. It has an ergosphere but no event
horizon. The angular momentum is constant everywhere beyond the ergosphere. The
energy-momentum... | [
{
"created": "Tue, 19 Oct 2004 03:13:49 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Glass",
"E. N.",
""
],
[
"Krisch",
"J. P.",
""
]
] | We present a method for constructing stationary, asymptotically flat, rotating solutions of Einstein's field equations. One of the spun-up solutions has quasilocal mass but no global mass. It has an ergosphere but no event horizon. The angular momentum is constant everywhere beyond the ergosphere. The energy-momentum c... |
1301.1658 | Aur\'elien Hees | A. Hees, B. Lamine, S. Reynaud, M.-T. Jaekel, C. Le Poncin-Lafitte, V.
Lainey, A. F\"uzfa, J.-M. Courty, V. Dehant, P. Wolf | Simulations of Solar System observations in alternative theories of
gravity | 3 pages, 1 figure, proceedings of 13th Marcel Grossmann Meeting, v2:
minor changes | The Thirteenth Marcel Grossmann Meeting (World Scientific, 2015)
pp. 2357-2359 | 10.1142/9789814623995_0440 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this communication, we focus on the possibility to test General Relativity
(GR) with radioscience experiments. We present simulations of observables
performed in alternative theories of gravity using a software that simulates
Range/Doppler signals directly from the space time metric. This software allows
one to ge... | [
{
"created": "Tue, 8 Jan 2013 20:11:21 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Jan 2013 16:29:43 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Feb 2013 18:18:30 GMT",
"version": "v3"
}
] | 2015-03-11 | [
[
"Hees",
"A.",
""
],
[
"Lamine",
"B.",
""
],
[
"Reynaud",
"S.",
""
],
[
"Jaekel",
"M. -T.",
""
],
[
"Poncin-Lafitte",
"C. Le",
""
],
[
"Lainey",
"V.",
""
],
[
"Füzfa",
"A.",
""
],
[
"Courty",
"J.... | In this communication, we focus on the possibility to test General Relativity (GR) with radioscience experiments. We present simulations of observables performed in alternative theories of gravity using a software that simulates Range/Doppler signals directly from the space time metric. This software allows one to get ... |
2205.11727 | Carlos Albertho Benavides-Gallego | Farrux Abdulxamidov, Carlos A. Benavides-Gallego, Wen-Biao Han, Javlon
Rayimbaev, Ahmadjon Abdujabbarov | Spinning test particle motion around a rotating wormhole | 20 pages, 16 figures | Phys.Rev.D 106 (2022) 2, 024012 | 10.1103/PhysRevD.106.024012 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work, we investigated the motion of spinning test particles around a
rotating wormhole, extending, in this way, the previous work of
Benavides-Gallego et al. in [Phys. Rev. D 101, no.12, 124024] to the general
case. Using the Mathisson-Papapetrous-Dixon equations, we study the effective
potential, circular or... | [
{
"created": "Tue, 24 May 2022 02:27:53 GMT",
"version": "v1"
}
] | 2022-07-13 | [
[
"Abdulxamidov",
"Farrux",
""
],
[
"Benavides-Gallego",
"Carlos A.",
""
],
[
"Han",
"Wen-Biao",
""
],
[
"Rayimbaev",
"Javlon",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
]
] | In this work, we investigated the motion of spinning test particles around a rotating wormhole, extending, in this way, the previous work of Benavides-Gallego et al. in [Phys. Rev. D 101, no.12, 124024] to the general case. Using the Mathisson-Papapetrous-Dixon equations, we study the effective potential, circular orbi... |
2305.11416 | Dnyaneshwar Tadas | A. Y. Shaikh, D. P. Tadas, S. D. Katore | An Oscillating Holographic Dark Energy in $f(R)$ Gravity | 14 Pages, 10 Figures | Bulg. J. Phys. vol.50 no.2 (2023), pp. 190-205 | 10.55318/bgjp.2023.50.2.190 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we investigated a Locally Rotationally Symmetric (LRS)
Bianchi-II cosmological model with matter and Holographic Dark Energy (HDE) in
the context of $f(R)$ theory of gravity. In order to find exact solutions to
the field equations, we assumed that the Shear scalar $(\sigma)$ is
proportional to Expans... | [
{
"created": "Fri, 19 May 2023 03:58:18 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Jun 2023 02:32:14 GMT",
"version": "v2"
}
] | 2023-07-03 | [
[
"Shaikh",
"A. Y.",
""
],
[
"Tadas",
"D. P.",
""
],
[
"Katore",
"S. D.",
""
]
] | In this article, we investigated a Locally Rotationally Symmetric (LRS) Bianchi-II cosmological model with matter and Holographic Dark Energy (HDE) in the context of $f(R)$ theory of gravity. In order to find exact solutions to the field equations, we assumed that the Shear scalar $(\sigma)$ is proportional to Expansio... |
gr-qc/9705028 | Keisuke Taniguchi | Masaru Shibata and Keisuke Taniguchi | Solving the Darwin problem in the first post-Newtonian approximation of
general relativity: compressible model | 28 pages, revtex, 9 figures(eps), accepted for publication in Phys.
Rev. D | Phys.Rev. D56 (1997) 811-825 | 10.1103/PhysRevD.56.811 | OU-TAP 58, KUNS 1434 | gr-qc | null | Using the ellipsoidal model for the density configuration, we calculate the
equilibrium sequence of the corotating binary stars of the polytropic equation
of state in the first post-Newtonian approximation of general relativity. After
we calibrate this model by comparing with previous numerical results, we
perform th... | [
{
"created": "Tue, 13 May 1997 10:55:30 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Shibata",
"Masaru",
""
],
[
"Taniguchi",
"Keisuke",
""
]
] | Using the ellipsoidal model for the density configuration, we calculate the equilibrium sequence of the corotating binary stars of the polytropic equation of state in the first post-Newtonian approximation of general relativity. After we calibrate this model by comparing with previous numerical results, we perform the ... |
1706.00678 | Qing Yang | Qing Yang, Li-Wei Ji, Bin Hu, Zhou-Jian Cao, Rong-Gen Cai | An axion-like scalar field environment effect on binary black hole
merger | 14 pages, 12 figures | null | 10.1088/1674-4527/18/6/65 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Environment, such as the accretion disk, could modify the signal of the
gravitational wave from the astrophysical black hole binaries. In this article,
we model the matter field around the intermediate-mass binary black holes by
means of an axion-like scalar field and investigate their joint evolution. In
details, we... | [
{
"created": "Thu, 1 Jun 2017 04:29:27 GMT",
"version": "v1"
}
] | 2018-06-13 | [
[
"Yang",
"Qing",
""
],
[
"Ji",
"Li-Wei",
""
],
[
"Hu",
"Bin",
""
],
[
"Cao",
"Zhou-Jian",
""
],
[
"Cai",
"Rong-Gen",
""
]
] | Environment, such as the accretion disk, could modify the signal of the gravitational wave from the astrophysical black hole binaries. In this article, we model the matter field around the intermediate-mass binary black holes by means of an axion-like scalar field and investigate their joint evolution. In details, we c... |
gr-qc/0608103 | Sanjeev Dhurandhar | Himan Mukhopadhyay, Norichica Sago, Hideyuki Tagoshi, Sanjeev
Dhurandhar, Hirotaka Takahashi & Nobuyuki Kanda | Detecting gravitational waves from inspiraling binaries with a network
of detectors : coherent versus coincident strategies | 18 pages, 10 figures, typo corrected | Phys.Rev. D74 (2006) 083005 | 10.1103/PhysRevD.74.083005 | null | gr-qc | null | We compare two strategies of multi-detector detection of compact binary
inspiral signals, namely, the coincidence and the coherent. For simplicity we
consider here two identical detectors having the same power spectral density of
noise, that of initial LIGO, located in the same place and having the same
orientation. ... | [
{
"created": "Tue, 22 Aug 2006 10:07:17 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Mukhopadhyay",
"Himan",
""
],
[
"Sago",
"Norichica",
""
],
[
"Tagoshi",
"Hideyuki",
""
],
[
"Dhurandhar",
"Sanjeev",
""
],
[
"Takahashi",
"Hirotaka",
""
],
[
"Kanda",
"Nobuyuki",
""
]
] | We compare two strategies of multi-detector detection of compact binary inspiral signals, namely, the coincidence and the coherent. For simplicity we consider here two identical detectors having the same power spectral density of noise, that of initial LIGO, located in the same place and having the same orientation. We... |
0712.0238 | Salvatore Capozziello | S. Capozziello, C. Stornaiolo | Space-time deformations as extended conformal transformations | 9 pages | Int.J.Geom.Meth.Mod.Phys.05:185-195,2008 | 10.1142/S0219887808002709 | null | gr-qc | null | A definition of space-time metric deformations on an $n$-dimensional manifold
is given. We show that such deformations can be regarded as extended conformal
transformations. In particular, their features can be related to the
perturbation theory giving a natural picture by which gravitational waves are
described by s... | [
{
"created": "Mon, 3 Dec 2007 09:39:58 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Capozziello",
"S.",
""
],
[
"Stornaiolo",
"C.",
""
]
] | A definition of space-time metric deformations on an $n$-dimensional manifold is given. We show that such deformations can be regarded as extended conformal transformations. In particular, their features can be related to the perturbation theory giving a natural picture by which gravitational waves are described by sma... |
2401.06467 | Sreejith Nair | Sreejith Nair, Sumanta Chakraborty and Sudipta Sarkar | Asymptotically de-Sitter black holes have non-zero tidal Love numbers | 18 pages | Phys.Rev.D 109 (2024) 6, 064025 | 10.1103/PhysRevD.109.064025 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Love numbers of compact objects quantify their tidal deformability against
external perturbations. It is expected that Love numbers of asymptotically flat
black holes (BHs) in General Relativity are identically zero. We show that
quite contrary to common expectations, the tidal Love numbers of asymptotically
de Sitte... | [
{
"created": "Fri, 12 Jan 2024 09:26:59 GMT",
"version": "v1"
}
] | 2024-05-09 | [
[
"Nair",
"Sreejith",
""
],
[
"Chakraborty",
"Sumanta",
""
],
[
"Sarkar",
"Sudipta",
""
]
] | Love numbers of compact objects quantify their tidal deformability against external perturbations. It is expected that Love numbers of asymptotically flat black holes (BHs) in General Relativity are identically zero. We show that quite contrary to common expectations, the tidal Love numbers of asymptotically de Sitter ... |
1906.06254 | Khalykbek Yelshibekov | Khalykbek Yelshibekov | A modification to the mirror trajectory corresponding to shell collapse | 43 pages, 12 figures, this BSc thesis is almost exclusively drawn
from arXiv:1611.00809 and arXiv:1801.08020. arXiv admin note: substantial
text overlap with arXiv:hep-th/9302096, arXiv:hep-th/9403108 by other authors | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The well-known moving mirror trajectory corresponding to black hole shell
collapse scenario (BHC) appears to produce an infinite amount of energy. By
changing the final velocity of the BHC mirror from the speed of light to a free
variable $\xi$ a new mirror trajectory was found. This modified BHC mirror
produces fini... | [
{
"created": "Wed, 22 May 2019 13:35:55 GMT",
"version": "v1"
}
] | 2019-06-17 | [
[
"Yelshibekov",
"Khalykbek",
""
]
] | The well-known moving mirror trajectory corresponding to black hole shell collapse scenario (BHC) appears to produce an infinite amount of energy. By changing the final velocity of the BHC mirror from the speed of light to a free variable $\xi$ a new mirror trajectory was found. This modified BHC mirror produces finite... |
1404.2382 | Ilya Mandel | Ilya Mandel, Christopher P L Berry, Frank Ohme, Stephen Fairhurst,
Will M Farr | Parameter estimation on compact binary coalescences with abruptly
terminating gravitational waveforms | Very minor changes to match published version | Class. Quantum Grav 31, 155005 (2014) | 10.1088/0264-9381/31/15/155005 | null | gr-qc astro-ph.HE physics.data-an | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave astronomy seeks to extract information about astrophysical
systems from the gravitational-wave signals they emit. For coalescing
compact-binary sources this requires accurate model templates for the inspiral
and, potentially, the subsequent merger and ringdown. Models with
frequency-domain waveform... | [
{
"created": "Wed, 9 Apr 2014 07:22:29 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Jul 2014 01:25:36 GMT",
"version": "v2"
}
] | 2014-07-24 | [
[
"Mandel",
"Ilya",
""
],
[
"Berry",
"Christopher P L",
""
],
[
"Ohme",
"Frank",
""
],
[
"Fairhurst",
"Stephen",
""
],
[
"Farr",
"Will M",
""
]
] | Gravitational-wave astronomy seeks to extract information about astrophysical systems from the gravitational-wave signals they emit. For coalescing compact-binary sources this requires accurate model templates for the inspiral and, potentially, the subsequent merger and ringdown. Models with frequency-domain waveforms ... |
2203.12332 | Samuel Kov\'a\v{c}ik | Samuel Kov\'a\v{c}ik | Microscopic black holes as probes for quantum gravity | Corfu Summer Institute 2021 "School and Workshops on Elementary
Particle Physics and Gravity" proceedings | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by/4.0/ | One of the main goals of contemporary theoretical physics is to find the
quantum theory of gravity. There are various working hypotheses, mostly
operating in the regime of high-energy physics well above the reach of particle
accelerators. So far, strong experimental or observational evidence to guide
the theory is mi... | [
{
"created": "Wed, 23 Mar 2022 11:16:18 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Mar 2022 15:03:05 GMT",
"version": "v2"
}
] | 2022-04-01 | [
[
"Kováčik",
"Samuel",
""
]
] | One of the main goals of contemporary theoretical physics is to find the quantum theory of gravity. There are various working hypotheses, mostly operating in the regime of high-energy physics well above the reach of particle accelerators. So far, strong experimental or observational evidence to guide the theory is miss... |
1311.6899 | Sijie Gao | Xiongjun Fang, Sijie Gao | General proof of the entropy principle for self-gravitating fluid in
static spacetimes | 11 pages, no figure. Order of the two theorems exchanged, matches
published version | Phys. Rev. D 90, 044013 (2014) | 10.1103/PhysRevD.90.044013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that for any perfect fluid in a static spacetime, if the Einstein
constraint equation is satisfied and the temperature of the fluid obeys
Tolman's law, then the other components of Einstein's equation are implied by
the assumption that the total entropy of the fluid achieves an extremum for
fixed total partic... | [
{
"created": "Wed, 27 Nov 2013 08:47:30 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Dec 2013 12:20:40 GMT",
"version": "v2"
},
{
"created": "Wed, 13 Aug 2014 14:54:40 GMT",
"version": "v3"
}
] | 2015-06-18 | [
[
"Fang",
"Xiongjun",
""
],
[
"Gao",
"Sijie",
""
]
] | We show that for any perfect fluid in a static spacetime, if the Einstein constraint equation is satisfied and the temperature of the fluid obeys Tolman's law, then the other components of Einstein's equation are implied by the assumption that the total entropy of the fluid achieves an extremum for fixed total particle... |
0901.3879 | Kiyoshi Shiraishi | Nahomi Kan (Yamaguchi Junior College) and Kiyoshi Shiraishi (Yamaguchi
University) | Emergent Einstein Universe under Deconstruction | 15 pages, three figures, use ptptex | Prog.Theor.Phys.121:1035-1048,2009 | 10.1143/PTP.121.1035 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study self-consistent static solutions for an Einstein universe in a
graph-based induced gravity. The one-loop quantum action is computed at finite
temperature. In particular, we demonstrate specific results for the models
based on cycle graphs.
| [
{
"created": "Sun, 25 Jan 2009 07:09:41 GMT",
"version": "v1"
}
] | 2009-08-11 | [
[
"Kan",
"Nahomi",
"",
"Yamaguchi Junior College"
],
[
"Shiraishi",
"Kiyoshi",
"",
"Yamaguchi\n University"
]
] | We study self-consistent static solutions for an Einstein universe in a graph-based induced gravity. The one-loop quantum action is computed at finite temperature. In particular, we demonstrate specific results for the models based on cycle graphs. |
gr-qc/9606090 | Thomas Thiemann | T. Thiemann | Quantum Spin Dynamics (QSD) II | 27 pages, Latex, preceded by a companion paper before this one | Class.Quant.Grav. 15 (1998) 875-905 | 10.1088/0264-9381/15/4/012 | HUTMP-96/B-352 | gr-qc hep-th | null | We continue here the analysis of the previous paper of the Wheeler-DeWitt
constraint operator for four-dimensional, Lorentzian, non-perturbative,
canonical vacuum quantum gravity in the continuum. In this paper we derive the
complete kernel, as well as a physical inner product on it, for a non-symmetric
version of th... | [
{
"created": "Sat, 29 Jun 1996 23:16:50 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Thiemann",
"T.",
""
]
] | We continue here the analysis of the previous paper of the Wheeler-DeWitt constraint operator for four-dimensional, Lorentzian, non-perturbative, canonical vacuum quantum gravity in the continuum. In this paper we derive the complete kernel, as well as a physical inner product on it, for a non-symmetric version of the ... |
gr-qc/0302063 | Alex Kaganovich | E.I. Guendelman and A.B. Kaganovich | Counter-example where cosmic time keeps its original role in quantum
cosmology | 19 pages; the talk presented to the International colloquium on the
science of time "Time and Matter" at Venice International University, Italy,
August 11-17, 2002 | null | null | null | gr-qc | null | In the minisuperspace models of quantum cosmology, the absence of time in the
Wheeler-DeWitt (constraint) equation, is the main point leading to the
generally accepted conclusion that in the quantum cosmology there is no
possibility to describe the evolution of the universe procceding in the cosmic
time (the time usu... | [
{
"created": "Sun, 16 Feb 2003 14:01:46 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Guendelman",
"E. I.",
""
],
[
"Kaganovich",
"A. B.",
""
]
] | In the minisuperspace models of quantum cosmology, the absence of time in the Wheeler-DeWitt (constraint) equation, is the main point leading to the generally accepted conclusion that in the quantum cosmology there is no possibility to describe the evolution of the universe procceding in the cosmic time (the time usual... |
1203.5367 | James Quach Mr | James Q. Quach, Chun-Hsu Su, Andrew M. Martin and Andrew D. Greentree | Domain structures in quantum graphity | 11 pages, 12 figures | Physical Review D 86, 044001 (2012) | 10.1103/PhysRevD.86.044001 | null | gr-qc cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum graphity offers the intriguing notion that space emerges in the low
energy states of the spatial degrees of freedom of a dynamical lattice. Here we
investigate metastable domain structures which are likely to exist in the low
energy phase of lattice evolution. Through an annealing process we explore the
forma... | [
{
"created": "Fri, 23 Mar 2012 22:40:42 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Aug 2012 08:03:04 GMT",
"version": "v2"
}
] | 2015-06-04 | [
[
"Quach",
"James Q.",
""
],
[
"Su",
"Chun-Hsu",
""
],
[
"Martin",
"Andrew M.",
""
],
[
"Greentree",
"Andrew D.",
""
]
] | Quantum graphity offers the intriguing notion that space emerges in the low energy states of the spatial degrees of freedom of a dynamical lattice. Here we investigate metastable domain structures which are likely to exist in the low energy phase of lattice evolution. Through an annealing process we explore the formati... |
1103.0287 | Niels Warburton | Niels Warburton, Leor Barack | Self force on a scalar charge in Kerr spacetime: eccentric equatorial
orbits | 26 pages, 9 figures. Minor typo corrected | Phys.Rev.D83:124038,2011 | 10.1103/PhysRevD.83.124038 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a numerical code for calculating the self force on a scalar charge
moving in a bound (eccentric) geodesic in the equatorial plane of a Kerr black
hole. We work in the frequency domain and make use of the method of extended
homogeneous solutions [Phys.\ Rev.\ D {\bf 78}, 084021 (2008)], in conjunction
with ... | [
{
"created": "Tue, 1 Mar 2011 21:14:08 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Jun 2011 12:31:26 GMT",
"version": "v2"
},
{
"created": "Thu, 26 Feb 2015 19:36:42 GMT",
"version": "v3"
}
] | 2015-02-27 | [
[
"Warburton",
"Niels",
""
],
[
"Barack",
"Leor",
""
]
] | We present a numerical code for calculating the self force on a scalar charge moving in a bound (eccentric) geodesic in the equatorial plane of a Kerr black hole. We work in the frequency domain and make use of the method of extended homogeneous solutions [Phys.\ Rev.\ D {\bf 78}, 084021 (2008)], in conjunction with mo... |
gr-qc/0601022 | Xiao Zhang | Wen-ling Huang, Xiao Zhang | On the relation between ADM and Bondi energy-momenta III -- perturbed
radiative spatial infinity | 12 pages, formulas simplified | Sci.China 50:1217-1226,2007 | 10.1007/s11425-007-0074-8 | null | gr-qc math.DG | null | In a vacuum spacetime equipped with the Bondi's radiating metric which is
asymptotically flat at spatial infinity including gravitational radiation ({\bf
Condition D}), we establish the relation between the ADM total energy-momentum
and the Bondi energy-momentum for perturbed radiative spatial infinity. The
perturbat... | [
{
"created": "Fri, 6 Jan 2006 03:40:40 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Apr 2006 11:55:07 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Sep 2006 05:10:32 GMT",
"version": "v3"
},
{
"created": "Sun, 1 Oct 2006 15:29:35 GMT",
"version": "v4"
}
] | 2015-06-25 | [
[
"Huang",
"Wen-ling",
""
],
[
"Zhang",
"Xiao",
""
]
] | In a vacuum spacetime equipped with the Bondi's radiating metric which is asymptotically flat at spatial infinity including gravitational radiation ({\bf Condition D}), we establish the relation between the ADM total energy-momentum and the Bondi energy-momentum for perturbed radiative spatial infinity. The perturbatio... |
2006.09399 | Shahar Hod | Shahar Hod | Onset of spontaneous scalarization in spinning Gauss-Bonnet black holes | 6 pages | Phys. Rev. D 102, 084060 (2020) | 10.1103/PhysRevD.102.084060 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has recently been proved numerically that spinning black holes in
Einstein-scalar theories which are characterized by a non-minimal negative
coupling of the scalar field to the Gauss-Bonnet invariant of the curved
spacetime may develop exponentially growing instabilities. Intriguingly, it has
been demonstrated tha... | [
{
"created": "Tue, 16 Jun 2020 18:00:05 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Aug 2020 05:04:34 GMT",
"version": "v2"
}
] | 2020-11-04 | [
[
"Hod",
"Shahar",
""
]
] | It has recently been proved numerically that spinning black holes in Einstein-scalar theories which are characterized by a non-minimal negative coupling of the scalar field to the Gauss-Bonnet invariant of the curved spacetime may develop exponentially growing instabilities. Intriguingly, it has been demonstrated that ... |
gr-qc/0602011 | Tomislav Prokopec | Bjorn Garbrecht (University of Manchester) and Tomislav Prokopec
(Utrecht University) | Fermion Mass Generation in de Sitter Space | 17 pages, 3 figures, LaTeX | Phys.Rev. D73 (2006) 064036 | 10.1103/PhysRevD.73.064036 | null | gr-qc | null | We study the one-loop radiative corrections for massless fermions in de
Sitter space induced by a Yukawa coupling to a light, nearly minimally coupled
scalar field. We show that the fermions acquire a mass. Next we construct the
corresponding (nonlocal) effective fermionic action, which -- in contrast to
the case of ... | [
{
"created": "Thu, 2 Feb 2006 17:47:11 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Garbrecht",
"Bjorn",
"",
"University of Manchester"
],
[
"Prokopec",
"Tomislav",
"",
"Utrecht University"
]
] | We study the one-loop radiative corrections for massless fermions in de Sitter space induced by a Yukawa coupling to a light, nearly minimally coupled scalar field. We show that the fermions acquire a mass. Next we construct the corresponding (nonlocal) effective fermionic action, which -- in contrast to the case of a ... |
2305.13339 | Abdolhosein Khodam-Mohammadi | A. Khodam-Mohammadi and M. Monshizadeh | Exploring Modifications to FLRW Cosmology with General Entropy and
Thermodynamics: A new Approach | 12 pages. Accepted for publication in PLB (Physics letter B) | Physics Letter B 843 (2023) 138066 | 10.1016/j.physletb.2023.138066 | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | The investigation of modifications to the FLRW cosmology resulting from the
consideration of a general entropy for the cosmological apparent horizon is the
subject of this study. Building upon the work of Nojiri and collaborators in
2022, who introduced a class of generalized entropies with four parameters
capable of... | [
{
"created": "Sun, 21 May 2023 06:15:19 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Jul 2023 07:51:31 GMT",
"version": "v2"
}
] | 2023-07-26 | [
[
"Khodam-Mohammadi",
"A.",
""
],
[
"Monshizadeh",
"M.",
""
]
] | The investigation of modifications to the FLRW cosmology resulting from the consideration of a general entropy for the cosmological apparent horizon is the subject of this study. Building upon the work of Nojiri and collaborators in 2022, who introduced a class of generalized entropies with four parameters capable of c... |
gr-qc/0609027 | Ulrich Straumann | St. Schlamminger, E. Holzschuh, W. K\"undig, F. Nolting, R.E. Pixley,
J. Schurr, U. Straumann | A Measurement of Newton's Gravitational Constant | 26 pages, 20 figures, Accepted for publication by Phys. Rev. D | Phys.Rev.D74:082001,2006 | 10.1103/PhysRevD.74.082001 | null | gr-qc | null | A precision measurement of the gravitational constant $G$ has been made using
a beam balance. Special attention has been given to determining the
calibration, the effect of a possible nonlinearity of the balance and the
zero-point variation of the balance. The equipment, the measurements and the
analysis are describe... | [
{
"created": "Thu, 7 Sep 2006 17:21:20 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Schlamminger",
"St.",
""
],
[
"Holzschuh",
"E.",
""
],
[
"Kündig",
"W.",
""
],
[
"Nolting",
"F.",
""
],
[
"Pixley",
"R. E.",
""
],
[
"Schurr",
"J.",
""
],
[
"Straumann",
"U.",
""
]
] | A precision measurement of the gravitational constant $G$ has been made using a beam balance. Special attention has been given to determining the calibration, the effect of a possible nonlinearity of the balance and the zero-point variation of the balance. The equipment, the measurements and the analysis are described ... |
0804.4131 | Fumiko Kawazoe | Fumiko Kawazoe (1), Mitsuhiro Fukushima (2), Seiji Kawamura (2),
Volker Leonhardt (2), Osamu Miyakawa (3), Tomoko Morioka (4), Atsushi
Nishizawa (5), Shuichi Sato (2), Kentaro Somiya (6), Akio Sugamoto (1),
Toshitaka Yamazaki (2) ((1)Ochanomizu University, Tokyo, Japan, (2)National
Astronomical Observatory of J... | Experimental investigation of a control scheme for a zero-detuning
resonant sideband extraction interferometer for next-generation
gravitational-wave detectors | 6 pages, 9 figrues | Class.Quant.Grav.25:195008,2008 | 10.1088/0264-9381/25/19/195008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Some next-generation gravitational-wave detectors, such as the American
Advanced LIGO project and the Japanese LCGT project, plan to use power recycled
resonant sideband extraction (RSE) interferometers for their interferometer's
optical configuration. A power recycled zero-detuning (PRZD) RSE
interferometer, which i... | [
{
"created": "Fri, 25 Apr 2008 15:39:47 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kawazoe",
"Fumiko",
""
],
[
"Fukushima",
"Mitsuhiro",
""
],
[
"Kawamura",
"Seiji",
""
],
[
"Leonhardt",
"Volker",
""
],
[
"Miyakawa",
"Osamu",
""
],
[
"Morioka",
"Tomoko",
""
],
[
"Nishizawa",
"Atsushi",
"... | Some next-generation gravitational-wave detectors, such as the American Advanced LIGO project and the Japanese LCGT project, plan to use power recycled resonant sideband extraction (RSE) interferometers for their interferometer's optical configuration. A power recycled zero-detuning (PRZD) RSE interferometer, which is ... |
1101.2791 | Roberto Tauraso | Riccardo March, Giovanni Bellettini, Roberto Tauraso, Simone
Dell'Agnello | Constraining spacetime torsion with LAGEOS | null | null | 10.1007/s10714-011-1226-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the corrections to the orbital Lense-Thirring effect (or
frame-dragging) in the presence of spacetime torsion. We derive the equations
of motion of a test body in the gravitational field of a rotating axisymmetric
massive body, using the parametrized framework of Mao, Tegmark, Guth and Cabi.
We calculate t... | [
{
"created": "Fri, 14 Jan 2011 12:45:46 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Feb 2011 14:54:58 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Jul 2011 05:29:37 GMT",
"version": "v3"
}
] | 2015-05-27 | [
[
"March",
"Riccardo",
""
],
[
"Bellettini",
"Giovanni",
""
],
[
"Tauraso",
"Roberto",
""
],
[
"Dell'Agnello",
"Simone",
""
]
] | We compute the corrections to the orbital Lense-Thirring effect (or frame-dragging) in the presence of spacetime torsion. We derive the equations of motion of a test body in the gravitational field of a rotating axisymmetric massive body, using the parametrized framework of Mao, Tegmark, Guth and Cabi. We calculate the... |
gr-qc/9901059 | Chanyong Park | Chanyong Park and Sang-Jin Sin | Phases of the Brans-Dicke Cosmology with Matter | 16 pages, 5 figures, Revtex | J.Korean Phys.Soc.34:463,1999 | null | null | gr-qc hep-th | null | We study the cosmology of the Brans-Dicke theory with perfect fluid type
matter. In our previous work, we found exact solutions for any Brans-Dicke
parameter $\omega$ and for general parameter $\gamma$ of equation of state. In
this paper we further study the cosmology of these solutions by analyzing them
according to... | [
{
"created": "Fri, 22 Jan 1999 05:55:44 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Jan 1999 02:41:10 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Park",
"Chanyong",
""
],
[
"Sin",
"Sang-Jin",
""
]
] | We study the cosmology of the Brans-Dicke theory with perfect fluid type matter. In our previous work, we found exact solutions for any Brans-Dicke parameter $\omega$ and for general parameter $\gamma$ of equation of state. In this paper we further study the cosmology of these solutions by analyzing them according to t... |
2210.04837 | Gregory Horndeski | Gregory W. Horndeski | Second-Order, Biconformally Invariant Scalar-Tensor Field Theories in a
Four-Dimensional Space | 24 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper I shall consider field theories in a space of four-dimensions
which have field variables consisting of the components of a metric tensor and
scalar field. The field equations of these scalar-tensor field theories will be
derivable from a variational principle using a Lagrange scalar density which is
a c... | [
{
"created": "Mon, 10 Oct 2022 16:50:55 GMT",
"version": "v1"
}
] | 2022-10-11 | [
[
"Horndeski",
"Gregory W.",
""
]
] | In this paper I shall consider field theories in a space of four-dimensions which have field variables consisting of the components of a metric tensor and scalar field. The field equations of these scalar-tensor field theories will be derivable from a variational principle using a Lagrange scalar density which is a con... |
gr-qc/9306009 | Dominik Schwarz | Dominik J. Schwarz | Analytic Solutions for Cosmological Perturbations in Multi-Dimensional
Space-Time | 6 pages (incl. 3 figures), LaTeX (epsf), TUW-93-07, two misprints
corrected (one formula, one reference) | Int.J.Mod.Phys.D3:265-268,1994 | 10.1142/S0218271894000423 | null | gr-qc astro-ph | null | We obtain analytic solutions for the density contrast and the anisotropic
pressure in a multi-dimensional FRW cosmology with collisionless, massless
matter. These are compared with perturbations of a perfect fluid universe. To
describe the metric perturbations we use manifest gauge invariant metric
potentials. The ma... | [
{
"created": "Mon, 7 Jun 1993 13:55:38 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Nov 1993 15:19:17 GMT",
"version": "v2"
}
] | 2011-04-15 | [
[
"Schwarz",
"Dominik J.",
""
]
] | We obtain analytic solutions for the density contrast and the anisotropic pressure in a multi-dimensional FRW cosmology with collisionless, massless matter. These are compared with perturbations of a perfect fluid universe. To describe the metric perturbations we use manifest gauge invariant metric potentials. The matt... |
2109.03258 | Zonghao Li | Zonghao Li | Lorentz violation in the matter-gravity sector | Presented at the Eighth Meeting on CPT and Lorentz Symmetry,
Bloomington, Indiana, May 12-16, 2019 | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by/4.0/ | We construct the general Lorentz-violating effective field theory in curved
spacetime and the corresponding nonrelativistic Hamiltonian in the Earth's
gravitational field. Applying this general framework to three types of
experiments, free-dropping, interferometer, and bound-state experiments, we
extract first constr... | [
{
"created": "Tue, 7 Sep 2021 18:00:53 GMT",
"version": "v1"
}
] | 2021-09-09 | [
[
"Li",
"Zonghao",
""
]
] | We construct the general Lorentz-violating effective field theory in curved spacetime and the corresponding nonrelativistic Hamiltonian in the Earth's gravitational field. Applying this general framework to three types of experiments, free-dropping, interferometer, and bound-state experiments, we extract first constrai... |
1504.07855 | Gilbert Weinstein | Gilbert Weinstein, Yosef Strauss, Sergey Bondarenko, Asher Yahalom,
Meir Lewkowicz, Lawrence Paul Horwitz, and Jacob Levitan | Entropy measures as geometrical tools in the study of cosmology | Final Version | Entropy 2018, 20(1), 6 | 10.3390/e20010006 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Classical chaos is often characterized as exponential divergence of nearby
trajectories. In many interesting cases these trajectories can be identified
with geodesic curves. We define here the entropy by $S = \ln \chi (x)$ with
$\chi(x)$ being the distance between two nearby geodesics. We derive an
equation for the e... | [
{
"created": "Wed, 29 Apr 2015 13:35:07 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Dec 2017 10:49:34 GMT",
"version": "v2"
}
] | 2017-12-27 | [
[
"Weinstein",
"Gilbert",
""
],
[
"Strauss",
"Yosef",
""
],
[
"Bondarenko",
"Sergey",
""
],
[
"Yahalom",
"Asher",
""
],
[
"Lewkowicz",
"Meir",
""
],
[
"Horwitz",
"Lawrence Paul",
""
],
[
"Levitan",
"Jacob",
"... | Classical chaos is often characterized as exponential divergence of nearby trajectories. In many interesting cases these trajectories can be identified with geodesic curves. We define here the entropy by $S = \ln \chi (x)$ with $\chi(x)$ being the distance between two nearby geodesics. We derive an equation for the ent... |
gr-qc/9907024 | Marc Toussaint | Marc Toussaint | A gauge theoretical view of the charge concept in Einstein gravity | LaTeX2e, 16 pages, 1 figure; enhanced discussion | Gen.Rel.Grav. 32 (2000) 885-896 | 10.1023/A:1001985024409 | Cologne-ThP-He2-Jul99 | gr-qc hep-th | null | We will discuss some analogies between internal gauge theories and gravity in
order to better understand the charge concept in gravity. A dimensional
analysis of gauge theories in general and a strict definition of elementary,
monopole, and topological charges are applied to electromagnetism and to
teleparallelism, a... | [
{
"created": "Tue, 6 Jul 1999 16:09:05 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Mar 2000 10:53:28 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Toussaint",
"Marc",
""
]
] | We will discuss some analogies between internal gauge theories and gravity in order to better understand the charge concept in gravity. A dimensional analysis of gauge theories in general and a strict definition of elementary, monopole, and topological charges are applied to electromagnetism and to teleparallelism, a g... |
2302.02244 | Peter K.F. Kuhfittig | Peter K.F. Kuhfittig | Noncommutative-geometry wormholes based on the Casimir effect | 6 pages, no figures | J. High Energy Phys. Grav. Cosmol. (JHEPGC) Vol. 9, 295-300, 2023 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | While wormholes are as good a prediction of Einstein's theory as black holes,
they are subject to severe restrictions from quantum field theory. In
particular, holding a wormhole open requires a violation of the null energy
condition, calling for the existence of exotic matter. The Casimir effect has
shown that this ... | [
{
"created": "Sat, 4 Feb 2023 21:09:38 GMT",
"version": "v1"
},
{
"created": "Mon, 22 May 2023 14:37:09 GMT",
"version": "v2"
}
] | 2023-05-23 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | While wormholes are as good a prediction of Einstein's theory as black holes, they are subject to severe restrictions from quantum field theory. In particular, holding a wormhole open requires a violation of the null energy condition, calling for the existence of exotic matter. The Casimir effect has shown that this ph... |
gr-qc/9411054 | Markus Heusler | M. Heusler | A Mass Bound for Spherically Symmetric Black Hole Spacetimes | 16 pages, LATEX, no figures | Class.Quant.Grav.12:779-790,1995 | 10.1088/0264-9381/12/3/015 | null | gr-qc | null | Requiring that the matter fields are subject to the dominant energy
condition, we establish the lower bound $(4\pi)^{-1} \kappa {\cal A}$ for the
total mass $M$ of a static, spherically symmetric black hole spacetime. (${\cal
A}$ and $\kappa$ denote the area and the surface gravity of the horizon,
respectively.) Toge... | [
{
"created": "Mon, 21 Nov 1994 16:46:01 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Heusler",
"M.",
""
]
] | Requiring that the matter fields are subject to the dominant energy condition, we establish the lower bound $(4\pi)^{-1} \kappa {\cal A}$ for the total mass $M$ of a static, spherically symmetric black hole spacetime. (${\cal A}$ and $\kappa$ denote the area and the surface gravity of the horizon, respectively.) Togeth... |
gr-qc/9405035 | Desmond McManus | Des J. Mc Manus and Alan A. Coley | Shear-free, Irrotational, Geodesic, Anisotropic Fluid Cosmologies | 13 pages LaTeX | Class.Quant.Grav.11:2045-2058,1994 | 10.1088/0264-9381/11/8/011 | null | gr-qc | null | General relativistic anisotropic fluid models whose fluid flow lines form a
shear-free, irrotational, geodesic timelike congruence are examined. These
models are of Petrov type D, and are assumed to have zero heat flux and an
anisotropic stress tensor that possesses two distinct non-zero eigenvalues.
Some general res... | [
{
"created": "Mon, 16 May 1994 17:40:58 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Manus",
"Des J. Mc",
""
],
[
"Coley",
"Alan A.",
""
]
] | General relativistic anisotropic fluid models whose fluid flow lines form a shear-free, irrotational, geodesic timelike congruence are examined. These models are of Petrov type D, and are assumed to have zero heat flux and an anisotropic stress tensor that possesses two distinct non-zero eigenvalues. Some general resul... |
1807.01939 | Ronaldas Macas | Francesco Pannarale, Ronaldas Macas, Patrick J. Sutton | Bayesian Inference Analysis of Unmodelled Gravitational-Wave Transients | 10 pages, 7 figures | null | 10.1088/1361-6382/aaf76d | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report the results of an in-depth analysis of the parameter estimation
capabilities of BayesWave, an algorithm for the reconstruction of
gravitational-wave signals without reference to a specific signal model. Using
binary black hole signals, we compare BayesWave's performance to the
theoretical best achievable pe... | [
{
"created": "Thu, 5 Jul 2018 10:56:33 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Jul 2018 11:54:05 GMT",
"version": "v2"
},
{
"created": "Mon, 10 Sep 2018 08:45:48 GMT",
"version": "v3"
}
] | 2019-02-13 | [
[
"Pannarale",
"Francesco",
""
],
[
"Macas",
"Ronaldas",
""
],
[
"Sutton",
"Patrick J.",
""
]
] | We report the results of an in-depth analysis of the parameter estimation capabilities of BayesWave, an algorithm for the reconstruction of gravitational-wave signals without reference to a specific signal model. Using binary black hole signals, we compare BayesWave's performance to the theoretical best achievable perf... |
gr-qc/0102072 | Janusz Garecki | Janusz Garecki | Do gravitational waves carry energy-momentum and angular momentum? | REVTEX, 14 pages | AnnalenPhys.11:442-456,2002 | 10.1002/1521-3889(200206)11:6<442::AID-ANDP442>3.0.CO;2-A | null | gr-qc | null | In the paper we show that the real gravitational waves which have
$R_{iklm}\not= 0$ always carry energy-momentum and angular momentum. Our proof
uses canonical superenergy and supermomentum tensors for gravitational field.
| [
{
"created": "Thu, 15 Feb 2001 15:01:17 GMT",
"version": "v1"
}
] | 2017-09-27 | [
[
"Garecki",
"Janusz",
""
]
] | In the paper we show that the real gravitational waves which have $R_{iklm}\not= 0$ always carry energy-momentum and angular momentum. Our proof uses canonical superenergy and supermomentum tensors for gravitational field. |
1501.04484 | Ifra Noureen | Ifra Noureen, M. Zubair | Dynamical Instability and Expansion-free Condition in $f(R,T)$ Gravity | 22 pages | Eur. Phys. J. C (2015) 75:62 | 10.1140/epjc/s10052-015-3289-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamical analysis of spherically symmetric collapsing star surrounding in
locally anisotropic environment with expansion-free condition is presented in
$f(R,T)$ gravity, where $R$ corresponds to Ricci scalar and $T$ stands for the
trace of energy momentum tensor. The modified field equations and evolution
equations ... | [
{
"created": "Mon, 19 Jan 2015 13:16:58 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Apr 2015 12:07:57 GMT",
"version": "v2"
}
] | 2015-04-21 | [
[
"Noureen",
"Ifra",
""
],
[
"Zubair",
"M.",
""
]
] | Dynamical analysis of spherically symmetric collapsing star surrounding in locally anisotropic environment with expansion-free condition is presented in $f(R,T)$ gravity, where $R$ corresponds to Ricci scalar and $T$ stands for the trace of energy momentum tensor. The modified field equations and evolution equations ar... |
2307.09268 | Agata Trovato | A. Trovato, \'E. Chassande-Mottin, M. Bejger, R. Flamary, N.Courty | Neural network time-series classifiers for gravitational-wave searches
in single-detector periods | 29 pages, 11 figures, submitted to CQG | Class. Quantum Grav. 41 125003 (2024) | 10.1088/1361-6382/ad40f0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The search for gravitational-wave signals is limited by non-Gaussian
transient noises that mimic astrophysical signals. Temporal coincidence between
two or more detectors is used to mitigate contamination by these instrumental
glitches. However, when a single detector is in operation, coincidence is
impossible, and o... | [
{
"created": "Tue, 18 Jul 2023 13:50:23 GMT",
"version": "v1"
}
] | 2024-05-15 | [
[
"Trovato",
"A.",
""
],
[
"Chassande-Mottin",
"É.",
""
],
[
"Bejger",
"M.",
""
],
[
"Flamary",
"R.",
""
],
[
"Courty",
"N.",
""
]
] | The search for gravitational-wave signals is limited by non-Gaussian transient noises that mimic astrophysical signals. Temporal coincidence between two or more detectors is used to mitigate contamination by these instrumental glitches. However, when a single detector is in operation, coincidence is impossible, and oth... |
gr-qc/9304031 | Juan Pablo | Juan Pablo Paz and Wojciech Hubert Zurek | Environment--Induced Decoherence, Classicality and Consistency of
Quantum Histories | 32 pages (1 figure, postcript included at the end: use epsf.tex and
follow instructions before Texing) LA-UR-93-1415 | Phys.Rev.D48:2728-2738,1993 | 10.1103/PhysRevD.48.2728 | null | gr-qc | null | We prove that for an open system, in the Markovian regime, it is always
possible to construct an infinite number of non trivial sets of histories that
exactly satisfy the probability sum rules. In spite of being perfectly
consistent, these sets manifest a very non--classical behavior: they are quite
unstable under th... | [
{
"created": "Tue, 20 Apr 1993 22:21:57 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Paz",
"Juan Pablo",
""
],
[
"Zurek",
"Wojciech Hubert",
""
]
] | We prove that for an open system, in the Markovian regime, it is always possible to construct an infinite number of non trivial sets of histories that exactly satisfy the probability sum rules. In spite of being perfectly consistent, these sets manifest a very non--classical behavior: they are quite unstable under the ... |
gr-qc/9704005 | 3 | Donald E. Neville | Energy and directional signatures for plane quantized gravity waves | 54 pages; LaTex | Phys.Rev. D57 (1998) 986-1008 | 10.1103/PhysRevD.57.986 | TU-33l-97 | gr-qc | null | Solutions are constructed to the quantum constraints for planar gravity
(fields dependent on z and t only) in the Ashtekar complex connection
formalism. A number of operators are constructed and applied to the solutions.
These include the familiar ADM energy and area operators, as well as new
operators sensitive to d... | [
{
"created": "Tue, 1 Apr 1997 19:32:23 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Neville",
"Donald E.",
""
]
] | Solutions are constructed to the quantum constraints for planar gravity (fields dependent on z and t only) in the Ashtekar complex connection formalism. A number of operators are constructed and applied to the solutions. These include the familiar ADM energy and area operators, as well as new operators sensitive to dir... |
gr-qc/9910044 | Charles W. Misner | Charles W. Misner (University of Maryland) | Spherical Harmonic Decomposition on a Cubic Grid | 5 pages, LaTeX uses cjour.cls (supplied) | Class.Quant.Grav.21:S243-S248,2004 | 10.1088/0264-9381/21/3/014 | UM PP-00-032 | gr-qc | null | A method is described by which a function defined on a cubic grid (as from a
finite difference solution of a partial differential equation) can be resolved
into spherical harmonic components at some fixed radius. This has applications
to the treatment of boundary conditions imposed at radii larger than the size
of th... | [
{
"created": "Tue, 12 Oct 1999 21:53:58 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Misner",
"Charles W.",
"",
"University of Maryland"
]
] | A method is described by which a function defined on a cubic grid (as from a finite difference solution of a partial differential equation) can be resolved into spherical harmonic components at some fixed radius. This has applications to the treatment of boundary conditions imposed at radii larger than the size of the ... |
1904.11790 | J. Fernando Barbero G. | J. Fernando Barbero G., Bogar D\'iaz, Juan Margalef-Bentabol and
Eduardo J. S. Villase\~nor | Dirac's algorithm in the presence of boundaries: a practical guide to a
geometric approach | 25 pages | Classical and Quantum Gravity, 36 (2019) 205014 | 10.1088/1361-6382/ab436b | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The goal of this paper is to propose and discuss a practical way to implement
the Dirac algorithm for constrained field models defined on spatial regions
with boundaries. Our method is inspired in the geometric viewpoint developed by
Gotay, Nester, and Hinds (GNH) to deal with singular Hamiltonian systems. We
pay spe... | [
{
"created": "Fri, 26 Apr 2019 12:13:26 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Aug 2019 08:19:41 GMT",
"version": "v2"
},
{
"created": "Mon, 30 Sep 2019 09:49:26 GMT",
"version": "v3"
}
] | 2019-10-01 | [
[
"G.",
"J. Fernando Barbero",
""
],
[
"Díaz",
"Bogar",
""
],
[
"Margalef-Bentabol",
"Juan",
""
],
[
"Villaseñor",
"Eduardo J. S.",
""
]
] | The goal of this paper is to propose and discuss a practical way to implement the Dirac algorithm for constrained field models defined on spatial regions with boundaries. Our method is inspired in the geometric viewpoint developed by Gotay, Nester, and Hinds (GNH) to deal with singular Hamiltonian systems. We pay speci... |
gr-qc/9710031 | Eric Gourgoulhon | S. Bonazzola, E. Gourgoulhon, J.-A. Marck (DARC, CNRS, Observatoire de
Paris, France) | A relativistic formalism to compute quasi-equilibrium configurations of
non-synchronized neutron star binaries | 14 pages, 1 PostScript figure, RevTeX, accepted for publication in
Physical Review D | Phys.Rev. D56 (1997) 7740-7749 | 10.1103/PhysRevD.56.7740 | null | gr-qc astro-ph | null | A general relativistic version of the Euler equation for perfect fluid
hydrodynamics is applied to a system of two neutron stars orbiting each other.
In the quasi-equilibrium phase of the evolution of this system, a first
integral of motion can be derived for certain velocity fields of the neutron
star fluid includin... | [
{
"created": "Mon, 6 Oct 1997 11:20:20 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Bonazzola",
"S.",
"",
"DARC, CNRS, Observatoire de\n Paris, France"
],
[
"Gourgoulhon",
"E.",
"",
"DARC, CNRS, Observatoire de\n Paris, France"
],
[
"Marck",
"J. -A.",
"",
"DARC, CNRS, Observatoire de\n Paris, France"
]
] | A general relativistic version of the Euler equation for perfect fluid hydrodynamics is applied to a system of two neutron stars orbiting each other. In the quasi-equilibrium phase of the evolution of this system, a first integral of motion can be derived for certain velocity fields of the neutron star fluid including ... |
1401.0895 | Behrouz Mirza | Behrouz Mirza, Fatemeh Oboudiat, Somayeh Zare | Dimension of quantum channel of radiation in pure Lovelock black holes | 6 pages | Gen Relativ Gravit (2014) 46:1652 | 10.1007/s10714-013-1652-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that the emission rate of entropy from a Schwarzschild black hole
is exactly the same as that of a one dimensional quantum channel \cite{Beken}.
We calculate the dimension of entropy emission from a $D$ dimensional pure
Lovelock black holes. Our results indicate that the dimension of transmission
for odd ... | [
{
"created": "Sun, 5 Jan 2014 14:20:10 GMT",
"version": "v1"
}
] | 2014-06-10 | [
[
"Mirza",
"Behrouz",
""
],
[
"Oboudiat",
"Fatemeh",
""
],
[
"Zare",
"Somayeh",
""
]
] | It is known that the emission rate of entropy from a Schwarzschild black hole is exactly the same as that of a one dimensional quantum channel \cite{Beken}. We calculate the dimension of entropy emission from a $D$ dimensional pure Lovelock black holes. Our results indicate that the dimension of transmission for odd $D... |
gr-qc/0312080 | Umpei Miyamoto | Umpei Miyamoto, Tomohiro Harada | Semiclassical Instability of the Cauchy Horizon in Self-Similar Collapse | 14 pages, 4 figures, minor errors corrected and some sentences added
in the introduction, accepted for publication in Physical Review D | Phys.Rev. D69 (2004) 104005 | 10.1103/PhysRevD.69.104005 | null | gr-qc astro-ph hep-th quant-ph | null | Generic spherically symmetric self-similar collapse results in strong
naked-singularity formation. In this paper we are concerned with particle
creation during a naked-singularity formation in spherically symmetric
self-similar collapse without specifying the collapsing matter. In the generic
case, the power of parti... | [
{
"created": "Wed, 17 Dec 2003 20:13:55 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Feb 2004 14:01:19 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Miyamoto",
"Umpei",
""
],
[
"Harada",
"Tomohiro",
""
]
] | Generic spherically symmetric self-similar collapse results in strong naked-singularity formation. In this paper we are concerned with particle creation during a naked-singularity formation in spherically symmetric self-similar collapse without specifying the collapsing matter. In the generic case, the power of particl... |
0801.3801 | Virginia Re | AURIGA Collaboration, Virgo Collaboration | A Cross-correlation method to search for gravitational wave bursts with
AURIGA and Virgo | 11 pages, 6 figures, submitted to CQG special issue for Amaldi 7
Proceedings | Class.Quant.Grav.25:114046,2008 | 10.1088/0264-9381/25/11/114046 | null | gr-qc | null | We present a method to search for transient GWs using a network of detectors
with different spectral and directional sensitivities: the interferometer Virgo
and the bar detector AURIGA. The data analysis method is based on the
measurements of the correlated energy in the network by means of a weighted
cross-correlati... | [
{
"created": "Thu, 24 Jan 2008 17:03:21 GMT",
"version": "v1"
}
] | 2012-08-27 | [
[
"AURIGA Collaboration",
"",
""
],
[
"Virgo Collaboration",
"",
""
]
] | We present a method to search for transient GWs using a network of detectors with different spectral and directional sensitivities: the interferometer Virgo and the bar detector AURIGA. The data analysis method is based on the measurements of the correlated energy in the network by means of a weighted cross-correlation... |
gr-qc/0312020 | Alan D. Rendall | Alan D. Rendall | Asymptotics of solutions of the Einstein equations with positive
cosmological constant | 23 pages | Annales Henri Poincare 5 (2004) 1041-1064 | 10.1007/s00023-004-0189-1 | AEI-2003-102 | gr-qc | null | A positive cosmological constant simplifies the asymptotics of forever
expanding cosmological solutions of the Einstein equations. In this paper a
general mathematical analysis on the level of formal power series is carried
out for vacuum spacetimes of any dimension and perfect fluid spacetimes with
linear equation o... | [
{
"created": "Wed, 3 Dec 2003 11:44:46 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Rendall",
"Alan D.",
""
]
] | A positive cosmological constant simplifies the asymptotics of forever expanding cosmological solutions of the Einstein equations. In this paper a general mathematical analysis on the level of formal power series is carried out for vacuum spacetimes of any dimension and perfect fluid spacetimes with linear equation of ... |
0805.1900 | Francesco Cianfrani dr | F. Cianfrani, G. Montani | Synchronous Quantum Gravity | 8 pages, Proceedings of the II Stueckelberg workshop | Int.J.Mod.Phys.23:1105-1112,2008 | 10.1142/S0217751X08040007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The implications of restricting the covariance principle within a Gaussian
gauge are developed both on a classical and a quantum level. Hence, we
investigate the cosmological issues of the obtained Schr\"odinger Quantum
Gravity with respect to the asymptotically early dynamics of a generic
Universe. A dualism between... | [
{
"created": "Tue, 13 May 2008 18:41:39 GMT",
"version": "v1"
}
] | 2009-11-13 | [
[
"Cianfrani",
"F.",
""
],
[
"Montani",
"G.",
""
]
] | The implications of restricting the covariance principle within a Gaussian gauge are developed both on a classical and a quantum level. Hence, we investigate the cosmological issues of the obtained Schr\"odinger Quantum Gravity with respect to the asymptotically early dynamics of a generic Universe. A dualism between t... |
gr-qc/0603093 | Grigory Volovik | G.E. Volovik | Horizons and Ergoregions in Superfluids | 21 pages, 5 Figures, JLTP style, prepared for proceedings of the
workshop "Universal features in turbulence: from quantum to cosmological
scales", December 2005, Warwick, version submitted to JLTP, discussion on
Hawking radiation extended, references added | J.LowTemp.Phys.145:337-356,2006 | 10.1007/s10909-006-9248-y | null | gr-qc cond-mat.soft hep-ph physics.flu-dyn | null | Ripplons -- gravity-capillary waves on the free surface of a liquid or at the
interfaces between two superfluids -- are the most favourable excitations for
simulation of the general-relativistic effects related to horizons and
ergoregions. The white-hole horizon for the ``relativistic'' ripplons at the
surface of the... | [
{
"created": "Thu, 23 Mar 2006 14:36:20 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Jul 2006 14:11:11 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Aug 2006 14:21:47 GMT",
"version": "v3"
},
{
"created": "Fri, 25 Aug 2006 08:39:09 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Volovik",
"G. E.",
""
]
] | Ripplons -- gravity-capillary waves on the free surface of a liquid or at the interfaces between two superfluids -- are the most favourable excitations for simulation of the general-relativistic effects related to horizons and ergoregions. The white-hole horizon for the ``relativistic'' ripplons at the surface of the s... |
2210.13493 | Adrien Kuntz | Adrien Kuntz, Francesco Serra, Enrico Trincherini | Effective two-body approach to the hierarchical three-body problem:
quadrupole to 1PN | 41 pages, 3 figures | null | 10.1103/PhysRevD.107.044011 | null | gr-qc astro-ph.EP astro-ph.HE astro-ph.SR hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Many binary systems of interest for gravitational-wave astronomy are orbited
by a third distant body, which can considerably alter their relativistic
dynamics. Precision computations are needed to understand the interplay between
relativistic corrections and three-body interactions. We use an effective field
theory a... | [
{
"created": "Mon, 24 Oct 2022 18:00:05 GMT",
"version": "v1"
}
] | 2023-02-22 | [
[
"Kuntz",
"Adrien",
""
],
[
"Serra",
"Francesco",
""
],
[
"Trincherini",
"Enrico",
""
]
] | Many binary systems of interest for gravitational-wave astronomy are orbited by a third distant body, which can considerably alter their relativistic dynamics. Precision computations are needed to understand the interplay between relativistic corrections and three-body interactions. We use an effective field theory app... |
gr-qc/9904056 | N. Kumar | N. Kumar (Raman Research Institute, Bangalore, India) | Cut-off free finite zero-point vacuum energy and the cosmological
missing mass problem | 5 pages, Latex, no figures Journal ref: MNRAS | null | null | null | gr-qc | null | As the mass-energy is universally self-gravitating, the gravitational binding
energy must be subtracted self-consistently from its bare mass value so as to
give the physical gravitational mass. Such a self-consistent gravitational
self-energy correction can be made non-perturbatively by the use of a
gravitational `ch... | [
{
"created": "Thu, 22 Apr 1999 02:47:59 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kumar",
"N.",
"",
"Raman Research Institute, Bangalore, India"
]
] | As the mass-energy is universally self-gravitating, the gravitational binding energy must be subtracted self-consistently from its bare mass value so as to give the physical gravitational mass. Such a self-consistent gravitational self-energy correction can be made non-perturbatively by the use of a gravitational `char... |
2106.01385 | Christian Pfeifer | Stefano Liberati and Christian Pfeifer and Jos\'e Javier Relancio | Exploring black holes as particle accelerators: hoop-radius, target
particles and escaping conditions | Improved and extended version of the original article, now including
a discussion of the escape conditions for the particles produced in a
collisional Penrose processes | JCAP05(2022)023 | 10.1088/1475-7516/2022/05/023 | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The possibility that rotating black holes could be natural particle
accelerators has been subject of intense debate. While it appears that for
extremal Kerr black holes arbitrarily high center of mass energies could be
achieved, several works pointed out that both theoretical as well as
astrophysical arguments would ... | [
{
"created": "Wed, 2 Jun 2021 18:00:06 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Apr 2022 09:30:55 GMT",
"version": "v2"
}
] | 2022-05-24 | [
[
"Liberati",
"Stefano",
""
],
[
"Pfeifer",
"Christian",
""
],
[
"Relancio",
"José Javier",
""
]
] | The possibility that rotating black holes could be natural particle accelerators has been subject of intense debate. While it appears that for extremal Kerr black holes arbitrarily high center of mass energies could be achieved, several works pointed out that both theoretical as well as astrophysical arguments would se... |
2008.06711 | Karima Masmar | H. El Moumni, K. Masmar, Ali \"Ovg\"un | Weak Deflection angle of some classes of non-linear electrodynamics
black holes via Gauss-Bonnet Theorem | 8 pages, 2 figures | Int.J.Geom.Meth.Mod.Phys. (2022) 2250094 | 10.1142/S0219887822500943 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the gravitational lensing by some black hole classes
within the non-linear electrodynamics in weak field limits. First, we calculate
an optical geometry of the non-linear electrodynamics black hole then we use
the Gauss-Bonnet theorem for finding deflection angle in weak field limits. The
effe... | [
{
"created": "Sat, 15 Aug 2020 12:30:36 GMT",
"version": "v1"
}
] | 2022-03-22 | [
[
"Moumni",
"H. El",
""
],
[
"Masmar",
"K.",
""
],
[
"Övgün",
"Ali",
""
]
] | In this paper, we study the gravitational lensing by some black hole classes within the non-linear electrodynamics in weak field limits. First, we calculate an optical geometry of the non-linear electrodynamics black hole then we use the Gauss-Bonnet theorem for finding deflection angle in weak field limits. The effect... |
2407.07125 | Bo Liang | Bo Liang, Minghui Du, He Wang, Yuxiang Xu, Chang Liu, Xiaotong Wei,
Peng Xu, Li-e Qiang, Ziren Luo | Rapid Parameter Estimation for Merging Massive Black Hole Binaries Using
ODE-Based Generative Models | null | null | null | null | gr-qc astro-ph.IM physics.data-an | http://creativecommons.org/licenses/by/4.0/ | Detecting the coalescences of massive black hole binaries (MBHBs) is one of
the primary targets for space-based gravitational wave observatories such as
LISA, Taiji, and Tianqin. The fast and accurate parameter estimation of merging
MBHBs is of great significance for both astrophysics and the global fitting of
all re... | [
{
"created": "Tue, 9 Jul 2024 07:05:53 GMT",
"version": "v1"
}
] | 2024-07-11 | [
[
"Liang",
"Bo",
""
],
[
"Du",
"Minghui",
""
],
[
"Wang",
"He",
""
],
[
"Xu",
"Yuxiang",
""
],
[
"Liu",
"Chang",
""
],
[
"Wei",
"Xiaotong",
""
],
[
"Xu",
"Peng",
""
],
[
"Qiang",
"Li-e",
""
... | Detecting the coalescences of massive black hole binaries (MBHBs) is one of the primary targets for space-based gravitational wave observatories such as LISA, Taiji, and Tianqin. The fast and accurate parameter estimation of merging MBHBs is of great significance for both astrophysics and the global fitting of all reso... |
gr-qc/9511054 | BoB | Roberto Casadio and Giovanni Venturi (Department of Physics,
University of Bologna, and Istituto Nazionale di Fisica Nucleare, Sezione di
Bologna, Italy) | Black hole and the adiabatic phase | Plain TeX, 12 pages | Class.Quant.Grav.12:1267-1278,1995 | 10.1088/0264-9381/12/5/016 | null | gr-qc hep-th | null | An open system consisting of a scalar field bound to a Kerr black hole whose
mass ($M$) and specific angular momentum ($a$) are slowly (adiabatically)
perturbed is considered. The adiabatically induced phase and the conditions for
the validity of the adiabatic approximation are obtained. The effect of closed
cycles i... | [
{
"created": "Mon, 20 Nov 1995 10:55:31 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Casadio",
"Roberto",
"",
"Department of Physics,\n University of Bologna, and Istituto Nazionale di Fisica Nucleare, Sezione di\n Bologna, Italy"
],
[
"Venturi",
"Giovanni",
"",
"Department of Physics,\n University of Bologna, and Istituto Nazionale di Fisica Nucleare, Sezi... | An open system consisting of a scalar field bound to a Kerr black hole whose mass ($M$) and specific angular momentum ($a$) are slowly (adiabatically) perturbed is considered. The adiabatically induced phase and the conditions for the validity of the adiabatic approximation are obtained. The effect of closed cycles in ... |
2212.02530 | Alberto Diez-Tejedor | Miguel Alcubierre, Juan Barranco, Argelia Bernal, Juan Carlos
Degollado, Alberto Diez-Tejedor, Miguel Megevand, Dar\'io N\'u\~nez and
Olivier Sarbach | Boson stars and their relatives in semiclassical gravity | 21 pages, 1 figure, 3 tables. To appear in Phys. Rev. D | null | 10.1103/PhysRevD.107.045017 | null | gr-qc astro-ph.CO hep-ph | http://creativecommons.org/licenses/by/4.0/ | We construct boson star configurations in quantum field theory using the
semiclassical gravity approximation. Restricting our attention to the static
case, we show that the semiclassical Einstein-Klein-Gordon system for a {\it
single real quantum} scalar field whose state describes the excitation of $N$
{\it identica... | [
{
"created": "Mon, 5 Dec 2022 19:00:08 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Feb 2023 00:48:24 GMT",
"version": "v2"
}
] | 2023-03-08 | [
[
"Alcubierre",
"Miguel",
""
],
[
"Barranco",
"Juan",
""
],
[
"Bernal",
"Argelia",
""
],
[
"Degollado",
"Juan Carlos",
""
],
[
"Diez-Tejedor",
"Alberto",
""
],
[
"Megevand",
"Miguel",
""
],
[
"Núñez",
"Darío",
... | We construct boson star configurations in quantum field theory using the semiclassical gravity approximation. Restricting our attention to the static case, we show that the semiclassical Einstein-Klein-Gordon system for a {\it single real quantum} scalar field whose state describes the excitation of $N$ {\it identical ... |
2008.03562 | Bikash Chandra Paul Professor | B. C. Paul | Dynamical Wormholes in Higher Dimensions and the Emergent Universe | 11 pages, 7 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamical wormholes in higher dimensions which admit flat emergent universe
(EU) model is presented. The EU model is free from initial singularity with
other observed features of the universe. The basic assumption of EU model was
that the present universe emerged out from a static Einstein universe. EU model
originat... | [
{
"created": "Sat, 8 Aug 2020 17:30:43 GMT",
"version": "v1"
}
] | 2020-08-11 | [
[
"Paul",
"B. C.",
""
]
] | Dynamical wormholes in higher dimensions which admit flat emergent universe (EU) model is presented. The EU model is free from initial singularity with other observed features of the universe. The basic assumption of EU model was that the present universe emerged out from a static Einstein universe. EU model originates... |
1112.3410 | Ran Li | Ran Li | Logarithmic entropy of black hole in gravity with conformal anomaly from
quantum tunneling approach | 10 pages, no figure, EPL in press | Europhys. Lett. 96 (2011) 60014 | 10.1209/0295-5075/96/60014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using quantum tunneling approach, we are able to derive the entropy with
logarithmic term of the static spherically symmetric black hole in
semi-classical Einstein equations with conformal anomaly. The results indicate
that the logarithmic correction to Bekenstein-Hawking area entropy can be well
explained by the sel... | [
{
"created": "Thu, 15 Dec 2011 02:23:50 GMT",
"version": "v1"
}
] | 2011-12-19 | [
[
"Li",
"Ran",
""
]
] | Using quantum tunneling approach, we are able to derive the entropy with logarithmic term of the static spherically symmetric black hole in semi-classical Einstein equations with conformal anomaly. The results indicate that the logarithmic correction to Bekenstein-Hawking area entropy can be well explained by the self-... |
1003.2849 | Masato Nozawa | Kei-ichi Maeda and Masato Nozawa | Black Hole in the Expanding Universe with Arbitrary Power-Law Expansion | 22 pages, 8 figures, 1 table; v2: typos corrected, references added,
version to appear in PRD | Phys.Rev.D81:124038,2010 | 10.1103/PhysRevD.81.124038 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a time-dependent and spatially inhomogeneous solution that
interpolates the extremal Reissner-Nordstr\"om (RN) black hole and the
Friedmann-Lema\^itre-Robertson-Walker (FLRW) universe with arbitrary power-law
expansion. It is an exact solution of the $D$-dimensional
Einstein-"Maxwell"-dilaton system, where... | [
{
"created": "Mon, 15 Mar 2010 05:49:48 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Jun 2010 18:47:38 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Maeda",
"Kei-ichi",
""
],
[
"Nozawa",
"Masato",
""
]
] | We present a time-dependent and spatially inhomogeneous solution that interpolates the extremal Reissner-Nordstr\"om (RN) black hole and the Friedmann-Lema\^itre-Robertson-Walker (FLRW) universe with arbitrary power-law expansion. It is an exact solution of the $D$-dimensional Einstein-"Maxwell"-dilaton system, where t... |
0709.1620 | Shahram Jalalzadeh | P. Pedram, S. Jalalzadeh, S. S. Gousheh | Quantum Stephani exact cosmological solutions and the selection of time
variable | 19 pages, 7 figures | Class.Quant.Grav.24:5515-5526,2007 | 10.1088/0264-9381/24/22/014 | null | gr-qc | null | We study perfect fluid Stephani quantum cosmological model. In the present
work the Schutz's variational formalism which recovers the notion of time is
applied. This gives rise to Wheeler-DeWitt equation for the scale factor. We
use the eigenfunctions in order to construct wave packets for each case. We
study the tim... | [
{
"created": "Tue, 11 Sep 2007 13:26:36 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Pedram",
"P.",
""
],
[
"Jalalzadeh",
"S.",
""
],
[
"Gousheh",
"S. S.",
""
]
] | We study perfect fluid Stephani quantum cosmological model. In the present work the Schutz's variational formalism which recovers the notion of time is applied. This gives rise to Wheeler-DeWitt equation for the scale factor. We use the eigenfunctions in order to construct wave packets for each case. We study the time-... |
gr-qc/0206047 | Jian-Miin Liu | Jian-Miin Liu | A test of Einstein's theory of gravitation: Velocity distribution of
low-energy particles in a spherically symmetric gravitational field | 4 pages with no figure | null | null | null | gr-qc | null | We propose a new test of Einstein's theory of gravitation. It concerns the
velocity distribution of low-energy particles in a spherically symmetric
gravitational field.
| [
{
"created": "Mon, 17 Jun 2002 20:41:17 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Liu",
"Jian-Miin",
""
]
] | We propose a new test of Einstein's theory of gravitation. It concerns the velocity distribution of low-energy particles in a spherically symmetric gravitational field. |
1407.6983 | Scott A. Hughes | Stephen O'Sullivan and Scott A. Hughes | Strong-field tidal distortions of rotating black holes: Formalism and
results for circular, equatorial orbits | 37 pages, 8 figures. Accepted for publication to Physical Review D.
This version corrects a number of typographical errors found when reviewing
the page proofs | Phys. Rev. D 90, 124039 (2014) | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Tidal coupling between members of a compact binary system can have an
interesting and important influence on that binary's dynamical inspiral. Tidal
coupling also distorts the binary's members, changing them (at lowest order)
from spheres to ellipsoids. At least in the limit of fluid bodies and Newtonian
gravity, the... | [
{
"created": "Fri, 25 Jul 2014 17:36:02 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Oct 2014 16:07:51 GMT",
"version": "v2"
},
{
"created": "Fri, 28 Nov 2014 19:12:32 GMT",
"version": "v3"
}
] | 2015-12-02 | [
[
"O'Sullivan",
"Stephen",
""
],
[
"Hughes",
"Scott A.",
""
]
] | Tidal coupling between members of a compact binary system can have an interesting and important influence on that binary's dynamical inspiral. Tidal coupling also distorts the binary's members, changing them (at lowest order) from spheres to ellipsoids. At least in the limit of fluid bodies and Newtonian gravity, there... |
2110.12457 | Stavros Venikoudis | F.P. Fronimos (Aristotle U., Thessaloniki), S.A. Venikoudis (Aristotle
U., Thessaloniki) | Inflation with exotic kinetic terms in Einstein-Chern-Simons gravity | Accepted in International Journal of Modern Physics A. arXiv admin
note: text overlap with arXiv:2107.09457 | null | 10.1142/S0217751X21502298 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | An alternative scenario about the phenomenology of primordial Universe is
k-inflation. According to this concept, inflation can be achieved by
nonstandard kinetic term of scalar field, namely the inflaton. In this project
we focus on k-essence models in the presence of a higher order and a linear
kinetic term. Furthe... | [
{
"created": "Sun, 24 Oct 2021 14:44:00 GMT",
"version": "v1"
}
] | 2021-12-01 | [
[
"Fronimos",
"F. P.",
"",
"Aristotle U., Thessaloniki"
],
[
"Venikoudis",
"S. A.",
"",
"Aristotle\n U., Thessaloniki"
]
] | An alternative scenario about the phenomenology of primordial Universe is k-inflation. According to this concept, inflation can be achieved by nonstandard kinetic term of scalar field, namely the inflaton. In this project we focus on k-essence models in the presence of a higher order and a linear kinetic term. Furtherm... |
2312.11808 | Neil J. Cornish | Toral Gupta and Neil Cornish | Bayesian power spectral estimation of gravitational wave detector noise
revisited | 11 pages, 14 figures | null | null | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The analysis of gravitational wave interferometer data requires estimates for
the noise covariance matrix. For stationary noise, this amounts to estimating
the power spectrum. Classical methods such as Welch averaging are used in many
analyses, but this method require large stretches of ``off-source'' data, where
the... | [
{
"created": "Tue, 19 Dec 2023 02:46:02 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Mar 2024 17:26:58 GMT",
"version": "v2"
}
] | 2024-03-05 | [
[
"Gupta",
"Toral",
""
],
[
"Cornish",
"Neil",
""
]
] | The analysis of gravitational wave interferometer data requires estimates for the noise covariance matrix. For stationary noise, this amounts to estimating the power spectrum. Classical methods such as Welch averaging are used in many analyses, but this method require large stretches of ``off-source'' data, where the a... |
1903.01781 | Bijan Saha Dr. | Bijan Saha | Non-minimally coupled nonlinear spinor field in Bianchi type-I cosmology | 9 pages, 2 figures | The European Physical Journal Plus 134, 491 (2019) | 10.1140/epjp/i2019-12859-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within the scope of Bianchi type-$I$ cosmological model we have studied the
role of spinor field in the evolution of the Universe. In doing so we have
considered the case with non-minimal coupling. It was found that the
non-diagonal components of the energy-momentum tensor of the spinor field,
hence the restrictions ... | [
{
"created": "Tue, 5 Mar 2019 12:12:44 GMT",
"version": "v1"
}
] | 2020-03-05 | [
[
"Saha",
"Bijan",
""
]
] | Within the scope of Bianchi type-$I$ cosmological model we have studied the role of spinor field in the evolution of the Universe. In doing so we have considered the case with non-minimal coupling. It was found that the non-diagonal components of the energy-momentum tensor of the spinor field, hence the restrictions on... |
1007.3670 | Salvatore Capozziello | S. Capozziello, R. Cianci, M. De Laurentis, S. Vignolo | Testing metric-affine f(R)-gravity by relic scalar gravitational waves | 12 pages, 4 figures | Eur.Phys.J.C70:341-349,2010 | 10.1140/epjc/s10052-010-1412-5 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the emergence of scalar gravitational waves in metric-affine
f(R)-gravity. Such a component allows to discriminate between metric and
metric-affine theories The intrinsic meaning of this result is that the
geodesic structure of the theory can be discriminated. We extend the formalism
of cross correlation a... | [
{
"created": "Wed, 21 Jul 2010 14:25:25 GMT",
"version": "v1"
}
] | 2011-02-09 | [
[
"Capozziello",
"S.",
""
],
[
"Cianci",
"R.",
""
],
[
"De Laurentis",
"M.",
""
],
[
"Vignolo",
"S.",
""
]
] | We discuss the emergence of scalar gravitational waves in metric-affine f(R)-gravity. Such a component allows to discriminate between metric and metric-affine theories The intrinsic meaning of this result is that the geodesic structure of the theory can be discriminated. We extend the formalism of cross correlation ana... |
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