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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1708.04665 | Daniela P\'erez | Gustavo E. Romero | Bunge on gravitational waves | 6 pages, accepted for publication in Foundations of Science | null | null | null | gr-qc physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I discuss the recent claims made by Mario Bunge on the philosophical
implications of the discovery of gravitational waves. I think that Bunge is
right when he points out that the detection implies the materiality of
spacetime, but I reject his identification of spacetime with the gravitational
field. I show that Bung... | [
{
"created": "Tue, 15 Aug 2017 20:11:57 GMT",
"version": "v1"
}
] | 2017-08-17 | [
[
"Romero",
"Gustavo E.",
""
]
] | I discuss the recent claims made by Mario Bunge on the philosophical implications of the discovery of gravitational waves. I think that Bunge is right when he points out that the detection implies the materiality of spacetime, but I reject his identification of spacetime with the gravitational field. I show that Bunge'... |
gr-qc/0108005 | Geoffery Ericksson | Geoffery Ericksson and Susan M. Scott | Isotropic singularities in shear-free perfect fluid cosmologies | 21 pages, 1 figure | Gen.Rel.Grav. 32 (2000) 425-443 | 10.1023/A:1001968015342 | null | gr-qc | null | We investigate barotropic perfect fluid cosmologies which admit an isotropic
singularity. From the General Vorticity Result of Scott, it is known that these
cosmologies must be irrotational. In this paper we prove, using two different
methods, that if we make the additional assumption that the perfect fluid is
shear-... | [
{
"created": "Thu, 2 Aug 2001 07:53:26 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Ericksson",
"Geoffery",
""
],
[
"Scott",
"Susan M.",
""
]
] | We investigate barotropic perfect fluid cosmologies which admit an isotropic singularity. From the General Vorticity Result of Scott, it is known that these cosmologies must be irrotational. In this paper we prove, using two different methods, that if we make the additional assumption that the perfect fluid is shear-fr... |
2308.01575 | Rui-Hui Lin | Rui-Hui Lin, Rui Jiang and Xiang-Hua Zhai | Quasinormal modes of the spherical bumblebee black holes with a global
monopole | accepted by Eur. Phys. J. C | null | 10.1140/epjc/s10052-023-11899-9 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The bumblebee model is an extension of the Einstein-Maxwell theory that
allows for the spontaneous breaking of the Lorentz symmetry of the spacetime.
In this paper, we study the quasinormal modes of the spherical black holes in
this model that are characterized by a global monopole. We analyze the two
cases with a va... | [
{
"created": "Thu, 3 Aug 2023 07:22:31 GMT",
"version": "v1"
}
] | 2023-12-19 | [
[
"Lin",
"Rui-Hui",
""
],
[
"Jiang",
"Rui",
""
],
[
"Zhai",
"Xiang-Hua",
""
]
] | The bumblebee model is an extension of the Einstein-Maxwell theory that allows for the spontaneous breaking of the Lorentz symmetry of the spacetime. In this paper, we study the quasinormal modes of the spherical black holes in this model that are characterized by a global monopole. We analyze the two cases with a vani... |
gr-qc/0205080 | Cuauhtemoc Campuzano Vargas | Alberto A. Garcia and Cuauhtemoc Campuzano | On Conformally Flat Stationary Axisymmetric Spacetimes | RevTex4, 5 pages | Phys.Rev.D66:124018,2002; Erratum-ibid.D68:049901,2003 | 10.1103/PhysRevD.66.124018 10.1103/PhysRevD.68.049901 | null | gr-qc | null | It is shown that within conformally flat stationary axisymmetric spacetimes,
besides of the static family, there exists a new class of metrics, which is
always stationary and axisymmetric. All these spacetimes, the static and the
stationary ones, are endowed with an arbitrary function depending on the two
non--Killin... | [
{
"created": "Fri, 17 May 2002 23:31:41 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Garcia",
"Alberto A.",
""
],
[
"Campuzano",
"Cuauhtemoc",
""
]
] | It is shown that within conformally flat stationary axisymmetric spacetimes, besides of the static family, there exists a new class of metrics, which is always stationary and axisymmetric. All these spacetimes, the static and the stationary ones, are endowed with an arbitrary function depending on the two non--Killingi... |
1207.2442 | Eric G. Adelberger | T. A. Wagner, S. Schlamminger, J. H. Gundlach and E. G. Adelberger | Torsion-balance tests of the weak equivalence principle | 17 pages, 9 figures (in press Classical Quantum Gravity 2012) | null | 10.1088/0264-9381/29/18/184002 | null | gr-qc hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We briefly summarize motivations for testing the weak equivalence principle
and then review recent torsion-balance results that compare the differential
accelerations of beryllium-aluminum and beryllium-titanium test body pairs with
precisions at the part in $10^{13}$ level. We discuss some implications of
these resu... | [
{
"created": "Tue, 10 Jul 2012 18:51:17 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Wagner",
"T. A.",
""
],
[
"Schlamminger",
"S.",
""
],
[
"Gundlach",
"J. H.",
""
],
[
"Adelberger",
"E. G.",
""
]
] | We briefly summarize motivations for testing the weak equivalence principle and then review recent torsion-balance results that compare the differential accelerations of beryllium-aluminum and beryllium-titanium test body pairs with precisions at the part in $10^{13}$ level. We discuss some implications of these result... |
2012.01073 | Francois Larrouturou | Antonio De Felice, Fran\c{c}ois Larrouturou, Shinji Mukohyama, Michele
Oliosi | Minimal Theory of Bigravity: construction and cosmology | 23 pages | JCAP04(2021)015 | 10.1088/1475-7516/2021/04/015 | YITP-20-157, IPMU20-0126 | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | Following the path of minimalism in alternative theories of gravity, we
construct the "Minimal Theory of Bigravity" (MTBG), a theory of two interacting
spin-2 fields that propagates only four local degrees of freedom instead of the
usual seven ones and that allows for the same homogeneous and isotropic
cosmological s... | [
{
"created": "Wed, 2 Dec 2020 10:39:32 GMT",
"version": "v1"
}
] | 2021-05-26 | [
[
"De Felice",
"Antonio",
""
],
[
"Larrouturou",
"François",
""
],
[
"Mukohyama",
"Shinji",
""
],
[
"Oliosi",
"Michele",
""
]
] | Following the path of minimalism in alternative theories of gravity, we construct the "Minimal Theory of Bigravity" (MTBG), a theory of two interacting spin-2 fields that propagates only four local degrees of freedom instead of the usual seven ones and that allows for the same homogeneous and isotropic cosmological sol... |
1909.09173 | Giacomo Rosati | Salvatore Mignemi, Giacomo Rosati | Physical velocity of particles in relativistic curved momentum space | null | null | 10.1142/S0217732320501801 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show in general that for a relativistic theory with curved momentum space,
i.e.~a theory with deformed relativistic symmetries, the physical velocity of
particles coincides with their group velocity. This clarifies a long-standing
question about the discrepancy between coordinate and group velocity for this
kind o... | [
{
"created": "Thu, 19 Sep 2019 18:01:43 GMT",
"version": "v1"
}
] | 2020-08-26 | [
[
"Mignemi",
"Salvatore",
""
],
[
"Rosati",
"Giacomo",
""
]
] | We show in general that for a relativistic theory with curved momentum space, i.e.~a theory with deformed relativistic symmetries, the physical velocity of particles coincides with their group velocity. This clarifies a long-standing question about the discrepancy between coordinate and group velocity for this kind of ... |
2001.09003 | Alexander Lukyanenko | Natalia Gorobey and Alexander Lukyanenko | Time and Observables in Covariant Quantum Theory | 6 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A modification of the covariant theory is proposed in which the self-energy
of the system, corresponding to time-like degrees of freedom in the
configuration space, preserves the classical law of change in quantum theory.
As a result, proper time in covariant quantum theory takes on a dynamic
meaning. As applications... | [
{
"created": "Wed, 22 Jan 2020 16:35:12 GMT",
"version": "v1"
}
] | 2020-01-27 | [
[
"Gorobey",
"Natalia",
""
],
[
"Lukyanenko",
"Alexander",
""
]
] | A modification of the covariant theory is proposed in which the self-energy of the system, corresponding to time-like degrees of freedom in the configuration space, preserves the classical law of change in quantum theory. As a result, proper time in covariant quantum theory takes on a dynamic meaning. As applications o... |
gr-qc/0610117 | Yanbei Chen | Kentaro Somiya, Keisuke Goda, Yanbei Chen and Eugeniy E. Mikhailov | Isolation of gravitational waves from displacement noise and utility of
a time-delay device | 10 pages, 12 figures, a proceeding for the Spanish Relativity Meeting
ERE 2006 | J.Phys.Conf.Ser.66:012053,2007 | 10.1088/1742-6596/66/1/012053 | null | gr-qc | null | Interferometers with kilometer-scale arms have been built for
gravitational-wave detections on the ground; ones with much longer arms are
being planned for space-based detection. One fundamental motivation for long
baseline interferometry is from displacement noise. In general, the longer the
arm length L, the larger... | [
{
"created": "Wed, 25 Oct 2006 16:12:35 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jan 2007 12:27:44 GMT",
"version": "v2"
}
] | 2020-07-06 | [
[
"Somiya",
"Kentaro",
""
],
[
"Goda",
"Keisuke",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Mikhailov",
"Eugeniy E.",
""
]
] | Interferometers with kilometer-scale arms have been built for gravitational-wave detections on the ground; ones with much longer arms are being planned for space-based detection. One fundamental motivation for long baseline interferometry is from displacement noise. In general, the longer the arm length L, the larger t... |
1806.06539 | Alfredo Lopez Ortega | D. V. Gomez-Navarro, A. Lopez-Ortega | Electromagnetic quasinormal modes of five-dimensional topological black
holes | 16 pages. Already published in Revista Mexicana de Fisica | Revista Mexicana de Fisica 63 (2017) 541-548 | null | https://rmf.smf.mx/ojs/index.php/rmf/article/view/378/223 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate exactly the QNF of the vector type and scalar type
electromagnetic fields propagating on a family of five-dimensional topological
black holes. To get a discrete spectrum of quasinormal frequencies for the
scalar type electromagnetic field we find that it is necessary to change the
boundary condition usua... | [
{
"created": "Mon, 18 Jun 2018 07:59:57 GMT",
"version": "v1"
}
] | 2023-06-06 | [
[
"Gomez-Navarro",
"D. V.",
""
],
[
"Lopez-Ortega",
"A.",
""
]
] | We calculate exactly the QNF of the vector type and scalar type electromagnetic fields propagating on a family of five-dimensional topological black holes. To get a discrete spectrum of quasinormal frequencies for the scalar type electromagnetic field we find that it is necessary to change the boundary condition usuall... |
0710.5135 | Michael Martin Nieto | Michael Martin Nieto | New Horizons and the Onset of the Pioneer Anomaly | 7 pages 2 figures Revision includes final corrections for publication | Phys.Lett.B659:483-485,2008 | 10.1016/j.physletb.2007.11.067 | LA-UR-07-7264 | gr-qc | null | Analysis of the radio tracking data from the Pioneer 10/11 spacecraft at
distances between about 20 - 70 AU from the Sun has indicated the presence of
an unmodeled, small, constant, Doppler blue shift which can be interpreted as a
constant acceleration of a_P= (8.74 \pm 1.33) \times 10^{-8} cm/s^2 directed
approximat... | [
{
"created": "Fri, 26 Oct 2007 16:23:15 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Jan 2008 19:11:34 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Nieto",
"Michael Martin",
""
]
] | Analysis of the radio tracking data from the Pioneer 10/11 spacecraft at distances between about 20 - 70 AU from the Sun has indicated the presence of an unmodeled, small, constant, Doppler blue shift which can be interpreted as a constant acceleration of a_P= (8.74 \pm 1.33) \times 10^{-8} cm/s^2 directed approximatel... |
1003.5836 | Pac\^ome Delva Dr. | P. Delva, U. Kostic and A. Cadez | Numerical modeling of a Global Navigation Satellite System in a general
relativistic framework | 17 pages, 11 figures | null | 10.1016/j.asr.2010.07.007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we model a Global Navigation Satellite System (GNSS) in a
Schwarzschild space-time, as a first approximation of the relativistic geometry
around the Earth. The closed time-like and scattering light-like geodesics are
obtained analytically, describing respectively trajectories of satellites and
electro... | [
{
"created": "Tue, 30 Mar 2010 15:04:06 GMT",
"version": "v1"
}
] | 2015-05-18 | [
[
"Delva",
"P.",
""
],
[
"Kostic",
"U.",
""
],
[
"Cadez",
"A.",
""
]
] | In this article we model a Global Navigation Satellite System (GNSS) in a Schwarzschild space-time, as a first approximation of the relativistic geometry around the Earth. The closed time-like and scattering light-like geodesics are obtained analytically, describing respectively trajectories of satellites and electroma... |
1004.3654 | Bijan Saha | Yu.P. Rybakov, G.N. Shikin, Yu.A. Popov and Bijan Saha | Electromagnetic field with induced massive term: Case with scalar field | 8 Pages | Central European Journal of Physics, 9(5), (2011) 1165 - 1172 | 10.2478/s11534-011-0033-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an interacting system of massless scalar and electromagnetic
field, with the Lagrangian explicitly depending on the electromagnetic
potentials, i.e., interaction with broken gauge invariance. The Lagrangian for
interaction is chosen in such a way that the electromagnetic field equation
acquires an additio... | [
{
"created": "Wed, 21 Apr 2010 09:06:40 GMT",
"version": "v1"
}
] | 2015-05-01 | [
[
"Rybakov",
"Yu. P.",
""
],
[
"Shikin",
"G. N.",
""
],
[
"Popov",
"Yu. A.",
""
],
[
"Saha",
"Bijan",
""
]
] | We consider an interacting system of massless scalar and electromagnetic field, with the Lagrangian explicitly depending on the electromagnetic potentials, i.e., interaction with broken gauge invariance. The Lagrangian for interaction is chosen in such a way that the electromagnetic field equation acquires an additiona... |
1512.03462 | Giulia Gubitosi | Leonardo Barcaroli and Giulia Gubitosi | Kinematics of particles with quantum de Sitter symmetries | null | Phys. Rev. D 93, 124063 (2016) | 10.1103/PhysRevD.93.124063 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the first detailed study of the kinematics of free relativistic
particles whose symmetries are described by a quantum deformation of the de
Sitter algebra, known as $q$-de Sitter Hopf algebra. The quantum deformation
parameter is a function of the Planck length $\ell$ and the de Sitter radius
$H^{-1}$, suc... | [
{
"created": "Thu, 10 Dec 2015 22:01:56 GMT",
"version": "v1"
}
] | 2016-06-29 | [
[
"Barcaroli",
"Leonardo",
""
],
[
"Gubitosi",
"Giulia",
""
]
] | We present the first detailed study of the kinematics of free relativistic particles whose symmetries are described by a quantum deformation of the de Sitter algebra, known as $q$-de Sitter Hopf algebra. The quantum deformation parameter is a function of the Planck length $\ell$ and the de Sitter radius $H^{-1}$, such ... |
0710.2666 | Hamid Reza Sepangi | M. Heydari-Fard and H. R. Sepangi | Generalized Chaplygin gas as geometrical dark energy | 11 pages, 3 figures, to appear in PRD | Phys.Rev.D76:104009,2007 | 10.1103/PhysRevD.76.104009 | null | gr-qc | null | The generalized Chaplygin gas provides an interesting candidate for the
present accelerated expansion of the universe. We explore a geometrical
explanation for the generalized Chaplygin gas within the context of brane world
theories where matter fields are confined to the brane by means of the action
of a confining p... | [
{
"created": "Sun, 14 Oct 2007 14:16:47 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Nov 2007 05:37:42 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Heydari-Fard",
"M.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | The generalized Chaplygin gas provides an interesting candidate for the present accelerated expansion of the universe. We explore a geometrical explanation for the generalized Chaplygin gas within the context of brane world theories where matter fields are confined to the brane by means of the action of a confining pot... |
gr-qc/0512002 | Daniele Oriti | Etera R. Livine and Daniele Oriti | Coupling of spacetime atoms and spin foam renormalisation from group
field theory | RevTeX, 18 pages, no figures | JHEP 0702:092,2007 | 10.1088/1126-6708/2007/02/092 | null | gr-qc | null | We study the issue of coupling among 4-simplices in the context of spin foam
models obtained from a group field theory formalism. We construct a
generalisation of the Barrett-Crane model in which an additional coupling
between the normals to tetrahedra, as defined in different 4-simplices that
share them, is present.... | [
{
"created": "Wed, 30 Nov 2005 22:19:36 GMT",
"version": "v1"
}
] | 2010-10-27 | [
[
"Livine",
"Etera R.",
""
],
[
"Oriti",
"Daniele",
""
]
] | We study the issue of coupling among 4-simplices in the context of spin foam models obtained from a group field theory formalism. We construct a generalisation of the Barrett-Crane model in which an additional coupling between the normals to tetrahedra, as defined in different 4-simplices that share them, is present. T... |
2206.00428 | Parth Bambhaniya | Vishva Patel, Kauntey Acharya, Parth Bambhaniya, Pankaj S. Joshi | Rotational energy extraction from the Kerr black hole's mimickers | 16 pages, 23 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, the Penrose process is being used to extract rotational energy
from regular black holes. Initially, we consider the rotating Simpson-Visser
regular spacetime which describes the class of geometries of the Kerr black
hole's mimickers. The Penrose process is then studied through conformally
transformed r... | [
{
"created": "Wed, 1 Jun 2022 12:07:59 GMT",
"version": "v1"
}
] | 2022-06-02 | [
[
"Patel",
"Vishva",
""
],
[
"Acharya",
"Kauntey",
""
],
[
"Bambhaniya",
"Parth",
""
],
[
"Joshi",
"Pankaj S.",
""
]
] | In this paper, the Penrose process is being used to extract rotational energy from regular black holes. Initially, we consider the rotating Simpson-Visser regular spacetime which describes the class of geometries of the Kerr black hole's mimickers. The Penrose process is then studied through conformally transformed rot... |
1811.02467 | Chunshan Lin | Chunshan Lin | The Self-consistent Matter Coupling of a Class of Minimally Modified
Gravity Theories | 11 pages, version accepted by JCAP | JCAP05(2019)037 | 10.1088/1475-7516/2019/05/037 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The self-consistent matter coupling is found in a broad class of minimally
modified gravity theories which was discovered recently. All constraints in the
theories remain first class and thus a graviton has only 2 local degrees of
freedom. The cosmological solution of one of the examples in this class, the
so-called ... | [
{
"created": "Tue, 6 Nov 2018 16:18:48 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Nov 2018 18:00:29 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Jan 2019 22:13:20 GMT",
"version": "v3"
},
{
"created": "Thu, 23 May 2019 08:47:31 GMT",
"version": "v4"
}
] | 2019-05-24 | [
[
"Lin",
"Chunshan",
""
]
] | The self-consistent matter coupling is found in a broad class of minimally modified gravity theories which was discovered recently. All constraints in the theories remain first class and thus a graviton has only 2 local degrees of freedom. The cosmological solution of one of the examples in this class, the so-called sq... |
2311.13497 | Jose Luis Hernandez-Pastora | J.L.Hern\'andez-Pastora | Gravitational fields of axially symmetric compact objects in 5D
space-time-matter gravity | 20 pages. No figures. General Relativity and Gravitation (2024) 56:23 | General Relativity and Gravitation 56: 23 (2024) | 10.1007/s10714-024-03210-2 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the standard Einstein's theory the exterior gravitational field of any
static and axially symmetric stellar object can be described by means of a
single function from which we obtain a metric into a four-dimensional
space-time. In this work we present a generalization of those so called Weyl
solutions to a space-t... | [
{
"created": "Wed, 22 Nov 2023 16:15:00 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Feb 2024 10:25:29 GMT",
"version": "v2"
}
] | 2024-02-19 | [
[
"Hernández-Pastora",
"J. L.",
""
]
] | In the standard Einstein's theory the exterior gravitational field of any static and axially symmetric stellar object can be described by means of a single function from which we obtain a metric into a four-dimensional space-time. In this work we present a generalization of those so called Weyl solutions to a space-tim... |
gr-qc/9611018 | Shiekh Anwar | A. Akhundov, S. Bellucci, A. Shiekh | Gravitational interaction to one loop in effective quantum gravity | 9 pages, LaTeX, 7 Postscript figures, replaced with minor changes to
the abstract and end of section 4 | Phys.Lett. B395 (1997) 16-23 | 10.1016/S0370-2693(96)01694-2 | LNF-96/058 (P) | gr-qc hep-ph hep-th | null | We carry out the first step of a program conceived, in order to build a
realistic model, having the particle spectrum of the standard model and
renormalized masses, interaction terms and couplings, etc. which include the
class of quantum gravity corrections, obtained by handling gravity as an
effective theory. This p... | [
{
"created": "Thu, 7 Nov 1996 14:45:56 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Nov 1996 16:10:40 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Akhundov",
"A.",
""
],
[
"Bellucci",
"S.",
""
],
[
"Shiekh",
"A.",
""
]
] | We carry out the first step of a program conceived, in order to build a realistic model, having the particle spectrum of the standard model and renormalized masses, interaction terms and couplings, etc. which include the class of quantum gravity corrections, obtained by handling gravity as an effective theory. This pro... |
1611.08783 | Chen Songbai | Songbai Chen, Shangyun Wang, Yang Huang, Jiliang Jing, Shiliang Wang | Strong gravitational lensing for the photons coupled to Weyl tensor in a
Kerr black hole spacetime | 28 pages, 15 figures, Accepted by PRD for publication. arXiv admin
note: text overlap with arXiv:1502.01088 | Phys. Rev. D 95, 104017 (2017) | 10.1103/PhysRevD.95.104017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present firstly equation of motion for the photon coupled to Weyl tensor
in a Kerr black hole spacetime and then study further the corresponding strong
gravitational lensing. We find that black hole rotation makes propagation of
the coupled photons more complicated, which brings some new features for
physical quan... | [
{
"created": "Sun, 27 Nov 2016 04:33:33 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Apr 2017 02:33:48 GMT",
"version": "v2"
}
] | 2017-05-19 | [
[
"Chen",
"Songbai",
""
],
[
"Wang",
"Shangyun",
""
],
[
"Huang",
"Yang",
""
],
[
"Jing",
"Jiliang",
""
],
[
"Wang",
"Shiliang",
""
]
] | We present firstly equation of motion for the photon coupled to Weyl tensor in a Kerr black hole spacetime and then study further the corresponding strong gravitational lensing. We find that black hole rotation makes propagation of the coupled photons more complicated, which brings some new features for physical quanti... |
1507.00378 | Stoytcho Yazadjiev | Daniela D. Doneva, Stoytcho S. Yazadjiev, Kostas D. Kokkotas | The I-Q relations for rapidly rotating neutron stars in $f(R)$ gravity | 8 pages, one figure | Phys. Rev. D 92, 064015 (2015) | 10.1103/PhysRevD.92.064015 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper we study the behavior of the normalized $I$-$Q$ relation
for neutron stars in a particular class of $f(R)$ theories of gravity, namely
the $R^2$ gravity that is one of the most natural and simplest extensions of
general relativity in the strong field regime. We study both the slowly and
rapidly r... | [
{
"created": "Wed, 1 Jul 2015 21:38:01 GMT",
"version": "v1"
}
] | 2015-09-16 | [
[
"Doneva",
"Daniela D.",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
],
[
"Kokkotas",
"Kostas D.",
""
]
] | In the present paper we study the behavior of the normalized $I$-$Q$ relation for neutron stars in a particular class of $f(R)$ theories of gravity, namely the $R^2$ gravity that is one of the most natural and simplest extensions of general relativity in the strong field regime. We study both the slowly and rapidly rot... |
1412.4220 | Sabine Hossenfelder | S. Hossenfelder | Analog Systems for Gravity Duals | replaced with published version | Phys. Rev. D 91, 124064 (2015) | 10.1103/PhysRevD.91.124064 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that analog gravity systems exist for charged, planar black holes in
asymptotic Anti-de Sitter space. These black holes have been employed to
describe, via the gauge-gravity duality, strongly coupled condensed matter
systems on the boundary of AdS-space. The analog gravity system is a different
condensed matt... | [
{
"created": "Sat, 13 Dec 2014 10:08:58 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jun 2015 13:54:39 GMT",
"version": "v2"
}
] | 2015-06-30 | [
[
"Hossenfelder",
"S.",
""
]
] | We show that analog gravity systems exist for charged, planar black holes in asymptotic Anti-de Sitter space. These black holes have been employed to describe, via the gauge-gravity duality, strongly coupled condensed matter systems on the boundary of AdS-space. The analog gravity system is a different condensed matter... |
gr-qc/0307067 | Carlos Palenzuela | C.Bona, T.Ledvinka, C.Palenzuela and M. Zacek | A symmetry-breaking mechanism for the Z4 general-covariant evolution
system | figures added, text changed, accepted in PRD | Phys.Rev. D69 (2004) 064036 | 10.1103/PhysRevD.69.064036 | null | gr-qc | null | The general-covariant Z4 formalism is further analyzed. The gauge conditions
are generalized with a view to Numerical Relativity applications and the
conditions for obtaining strongly hyperbolic evolution systems are given both
at the first and the second order levels. A symmetry-breaking mechanism is
proposed that a... | [
{
"created": "Tue, 15 Jul 2003 09:58:03 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Jul 2003 12:05:42 GMT",
"version": "v2"
},
{
"created": "Mon, 22 Mar 2004 10:36:05 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Bona",
"C.",
""
],
[
"Ledvinka",
"T.",
""
],
[
"Palenzuela",
"C.",
""
],
[
"Zacek",
"M.",
""
]
] | The general-covariant Z4 formalism is further analyzed. The gauge conditions are generalized with a view to Numerical Relativity applications and the conditions for obtaining strongly hyperbolic evolution systems are given both at the first and the second order levels. A symmetry-breaking mechanism is proposed that all... |
2206.01150 | Theodoros Papanikolaou | Shreya Banerjee, Theodoros Papanikolaou, Emmanuel N. Saridakis | Constraining $F(R)$ bouncing cosmologies with primordial black holes | To appear in Phys.Rev.D | null | 10.1103/PhysRevD.106.124012 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The phenomenology of primordial black hole (PBH) physics and the associated
PBH abundance constraints, can be used in order to probe the physics of the
early Universe. In this work, we investigate the PBH formation during the
standard radiation-dominated era by studying the effect of an early F(R)
modified gravity ph... | [
{
"created": "Thu, 2 Jun 2022 17:05:13 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Aug 2022 10:00:03 GMT",
"version": "v2"
},
{
"created": "Tue, 15 Nov 2022 17:19:59 GMT",
"version": "v3"
}
] | 2022-12-21 | [
[
"Banerjee",
"Shreya",
""
],
[
"Papanikolaou",
"Theodoros",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | The phenomenology of primordial black hole (PBH) physics and the associated PBH abundance constraints, can be used in order to probe the physics of the early Universe. In this work, we investigate the PBH formation during the standard radiation-dominated era by studying the effect of an early F(R) modified gravity phas... |
2105.07827 | Claus Kiefer | Claus Kiefer and Hermann Nicolai | The impact of Friedmann's work on cosmology | 4 pages, invited contribution to "Mathematicians from Saint
Petersburg and their theorems", ed. by Nikita Kalinin, v2: references added | null | null | null | gr-qc physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a brief review of Friedmann's impact on cosmology from a
historical and a physical perspective.
| [
{
"created": "Mon, 17 May 2021 13:36:47 GMT",
"version": "v1"
},
{
"created": "Tue, 25 May 2021 08:28:40 GMT",
"version": "v2"
}
] | 2021-05-26 | [
[
"Kiefer",
"Claus",
""
],
[
"Nicolai",
"Hermann",
""
]
] | We present a brief review of Friedmann's impact on cosmology from a historical and a physical perspective. |
2101.12391 | Durmus Demir | Durmus Demir | Emergent Gravity as the Eraser of Anomalous Gauge Boson Masses, and
QFT-GR Concord | 22 pages, 3 tables; to appear in General Relativity and Gravitation | Gen. Relativ. Gravit. 53, 22 (2021) | 10.1007/s10714-021-02797-0 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the same base setup as Sakharov's induced gravity, we investigate
emergence of gravity in effective quantum field theories (QFT), with particular
emphasis on the gauge sector in which gauge bosons acquire anomalous masses in
proportion to the ultraviolet cutoff $\Lambda_\wp$. Drawing on the fact that
$\Lambda_\wp^... | [
{
"created": "Fri, 29 Jan 2021 04:05:16 GMT",
"version": "v1"
}
] | 2021-02-24 | [
[
"Demir",
"Durmus",
""
]
] | In the same base setup as Sakharov's induced gravity, we investigate emergence of gravity in effective quantum field theories (QFT), with particular emphasis on the gauge sector in which gauge bosons acquire anomalous masses in proportion to the ultraviolet cutoff $\Lambda_\wp$. Drawing on the fact that $\Lambda_\wp^2$... |
1306.1623 | Aron Wall | Sudipta Sarkar, Aron C. Wall | Generalized second law at linear order for actions that are functions of
Lovelock densities | 19 pages, no figues, v2 references and minor comments added, v3 Ref.
4 & typos in Eq. 14, 27, 40 corrected | Phys. Rev. D 88, 044017 (2013) | 10.1103/PhysRevD.88.044017 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we consider the second law of black holes (and other causal
horizons) in theories where the gravitational action is an arbitrary function
of the Lovelock densities. We show that there exists an entropy which increases
locally, for linearized perturbations to regular Killing horizons. In addition
to a ... | [
{
"created": "Fri, 7 Jun 2013 05:59:25 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Aug 2013 09:13:35 GMT",
"version": "v2"
},
{
"created": "Tue, 19 May 2015 21:20:54 GMT",
"version": "v3"
}
] | 2015-05-21 | [
[
"Sarkar",
"Sudipta",
""
],
[
"Wall",
"Aron C.",
""
]
] | In this article we consider the second law of black holes (and other causal horizons) in theories where the gravitational action is an arbitrary function of the Lovelock densities. We show that there exists an entropy which increases locally, for linearized perturbations to regular Killing horizons. In addition to a cl... |
1910.01899 | Fay\c{c}al Hammad | Fay\c{c}al Hammad and Alexandre Landry | Landau levels in a gravitational field: The Levi-Civita and Kerr
spacetimes case | 35 Pages. References, corrections and improvements added. Accepted
version for publication in EPJP | Eur. Phys. J. Plus 135, 90 (2020) | 10.1140/epjp/s13360-020-00108-1 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have recently found that the gravitational field of a static spherical
mass removes the Landau degeneracy of the energy levels of a particle moving
around the mass inside a magnetic field by splitting the energy of the Landau
orbitals. In this paper we present the second part of our investigation of the
effect of ... | [
{
"created": "Tue, 1 Oct 2019 15:01:32 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Dec 2019 10:37:49 GMT",
"version": "v2"
}
] | 2020-02-04 | [
[
"Hammad",
"Fayçal",
""
],
[
"Landry",
"Alexandre",
""
]
] | We have recently found that the gravitational field of a static spherical mass removes the Landau degeneracy of the energy levels of a particle moving around the mass inside a magnetic field by splitting the energy of the Landau orbitals. In this paper we present the second part of our investigation of the effect of gr... |
gr-qc/0506067 | James Ryan | Laurent Freidel, Daniele Oriti, James Ryan | A group field theory for 3d quantum gravity coupled to a scalar field | 11 pages, no figures, references added | null | null | null | gr-qc hep-th | null | We present a new group field theory model, generalising the Boulatov model,
which incorporates both 3-dimensional gravity and matter coupled to gravity. We
show that the Feynman diagram amplitudes of this model are given by Riemannian
quantum gravity spin foam amplitudes coupled to a scalar matter field. We
briefly d... | [
{
"created": "Fri, 10 Jun 2005 20:46:28 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jul 2005 18:08:23 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Freidel",
"Laurent",
""
],
[
"Oriti",
"Daniele",
""
],
[
"Ryan",
"James",
""
]
] | We present a new group field theory model, generalising the Boulatov model, which incorporates both 3-dimensional gravity and matter coupled to gravity. We show that the Feynman diagram amplitudes of this model are given by Riemannian quantum gravity spin foam amplitudes coupled to a scalar matter field. We briefly dis... |
gr-qc/0505001 | Vladimir S. Manko | V.S. Manko and E. Ruiz | Physical interpretation of NUT solution | 7 pages, 1 figure, submitted to Classical and Quantum Gravity | Class.Quant.Grav. 22 (2005) 3555-3560 | 10.1088/0264-9381/22/17/014 | null | gr-qc | null | We show that the well-known NUT solution can be correctly interpreted as
describing the exterior field of two counter-rotating semi-infinite sources
possessing negative masses and infinite angular momenta which are attached to
the poles of a static finite rod of positive mass.
| [
{
"created": "Fri, 29 Apr 2005 22:52:42 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Manko",
"V. S.",
""
],
[
"Ruiz",
"E.",
""
]
] | We show that the well-known NUT solution can be correctly interpreted as describing the exterior field of two counter-rotating semi-infinite sources possessing negative masses and infinite angular momenta which are attached to the poles of a static finite rod of positive mass. |
1808.03200 | Claes Uggla | Claes Uggla and John Wainwright | Dynamics of cosmological perturbations at first and second order | 27 pages | Phys. Rev. D 98, 103534 (2018) | 10.1103/PhysRevD.98.103534 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we give five gauge-invariant systems of governing equations for
first and second order scalar perturbations of flat Friedmann-Lema\^{i}tre
universes that are minimal in the sense that they contain no redundant
equations or variables. We normalize the variables so that they are
dimensionless, which leads... | [
{
"created": "Thu, 9 Aug 2018 15:37:07 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Jan 2019 09:49:59 GMT",
"version": "v2"
}
] | 2019-01-23 | [
[
"Uggla",
"Claes",
""
],
[
"Wainwright",
"John",
""
]
] | In this paper we give five gauge-invariant systems of governing equations for first and second order scalar perturbations of flat Friedmann-Lema\^{i}tre universes that are minimal in the sense that they contain no redundant equations or variables. We normalize the variables so that they are dimensionless, which leads t... |
2008.12206 | Alan Kostelecky | Alan Kostelecky and Zonghao Li | Backgrounds in gravitational effective field theory | 36 pages two-column REVTeX | Phys. Rev. D 103, 024059 (2021) | 10.1103/PhysRevD.103.024059 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Effective field theories describing gravity coupled to matter are
investigated, allowing for operators of arbitrary mass dimension. Terms
violating local Lorentz and diffeomorphism invariance while preserving internal
gauge symmetries are included. The theoretical framework for violations of
local Lorentz and diffeom... | [
{
"created": "Thu, 27 Aug 2020 16:02:34 GMT",
"version": "v1"
}
] | 2021-02-03 | [
[
"Kostelecky",
"Alan",
""
],
[
"Li",
"Zonghao",
""
]
] | Effective field theories describing gravity coupled to matter are investigated, allowing for operators of arbitrary mass dimension. Terms violating local Lorentz and diffeomorphism invariance while preserving internal gauge symmetries are included. The theoretical framework for violations of local Lorentz and diffeomor... |
2304.01154 | Hongbo Cheng | Yuxuan Shi, Hongbo Cheng | The shadow and gamma-ray bursts of a Schwarzschild black hole in
asymptotic safety | 17 pages, 5 figures | null | null | null | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We research on the neutrino pair annihilation
$\nu+\overline{\nu}\longrightarrow e^{-}+e^{+}$ around a massive source in
asymptotic safety. Since neutrinos and photons have the same geodesic equation
around black holes, we can estimate the radius where the neutrinos will be
released by obtaining a series of trajector... | [
{
"created": "Fri, 31 Mar 2023 02:01:12 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Apr 2023 14:23:35 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Aug 2023 06:54:16 GMT",
"version": "v3"
},
{
"created": "Sun, 12 Nov 2023 09:26:44 GMT",
"version": "v4"
},
{
"cr... | 2024-05-24 | [
[
"Shi",
"Yuxuan",
""
],
[
"Cheng",
"Hongbo",
""
]
] | We research on the neutrino pair annihilation $\nu+\overline{\nu}\longrightarrow e^{-}+e^{+}$ around a massive source in asymptotic safety. Since neutrinos and photons have the same geodesic equation around black holes, we can estimate the radius where the neutrinos will be released by obtaining a series of trajectory ... |
2204.11169 | Yaqi Zhao | Yaqi Zhao, Xin Ren, Amara Ilyas, Emmanuel N. Saridakis, Yi-Fu Cai | Quasinormal modes of black holes in f(T) gravity | 22 pages, 7 figures | JCAP10(2022)087 | 10.1088/1475-7516/2022/10/087 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the quasinormal modes (QNM) frequencies of a test massless
scalar field and an electromagnetic field around static black holes in $f(T)$
gravity. Focusing on quadratic $f(T)$ modifications, which is a good
approximation for every realistic $f(T)$ theory, we first extract the
spherically symmetric solutio... | [
{
"created": "Sun, 24 Apr 2022 02:57:28 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Oct 2022 03:21:11 GMT",
"version": "v2"
}
] | 2022-10-31 | [
[
"Zhao",
"Yaqi",
""
],
[
"Ren",
"Xin",
""
],
[
"Ilyas",
"Amara",
""
],
[
"Saridakis",
"Emmanuel N.",
""
],
[
"Cai",
"Yi-Fu",
""
]
] | We calculate the quasinormal modes (QNM) frequencies of a test massless scalar field and an electromagnetic field around static black holes in $f(T)$ gravity. Focusing on quadratic $f(T)$ modifications, which is a good approximation for every realistic $f(T)$ theory, we first extract the spherically symmetric solutions... |
1109.2371 | Sushant Ghosh Prof | Sushant G. Ghosh | 5D Radiating black holes in Einstein-Yang-Mills-Gauss-Bonnet gravity | 6 RevTex Pages, Accepted in Phys. Lett. B | null | 10.1016/j.physletb.2011.08.066 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive nonstatic spherically symmetric solutions of a null fluid, in five
dimension (5D), to Einstein-Yang-Mills (EYM) equations with the coupling of
Gauss-Bonnet (GB) combination of quadratic curvature terms, namely, 5D-EYMGB
radiating black hole solution. It is shown that, in the limit, we can recover
known radi... | [
{
"created": "Mon, 12 Sep 2011 03:22:53 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Ghosh",
"Sushant G.",
""
]
] | We derive nonstatic spherically symmetric solutions of a null fluid, in five dimension (5D), to Einstein-Yang-Mills (EYM) equations with the coupling of Gauss-Bonnet (GB) combination of quadratic curvature terms, namely, 5D-EYMGB radiating black hole solution. It is shown that, in the limit, we can recover known radiat... |
1712.10177 | Athanasios Tzikas | Konstantinos F. Dialektopoulos, Antonios Nathanail and Athanasios G.
Tzikas | Cosmological production of black holes: a way to constrain alternative
theories of gravity | 10 pages, 1 figure, 1 table, version accepted for publication in
Physical Review D | Phys. Rev. D 97, 124059 (2018) | 10.1103/PhysRevD.97.124059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Primordial black holes are considered to be pair created quantum-mechanically
during inflation. In the context of General Relativity (GR), it has been shown
that the pair creation rate is exponentially decreasing during inflation.
Specifically, tiny black holes are favored in the early universe, but they can
grow wit... | [
{
"created": "Fri, 29 Dec 2017 10:47:27 GMT",
"version": "v1"
},
{
"created": "Sun, 29 Apr 2018 15:29:04 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Jun 2018 20:46:43 GMT",
"version": "v3"
}
] | 2018-06-27 | [
[
"Dialektopoulos",
"Konstantinos F.",
""
],
[
"Nathanail",
"Antonios",
""
],
[
"Tzikas",
"Athanasios G.",
""
]
] | Primordial black holes are considered to be pair created quantum-mechanically during inflation. In the context of General Relativity (GR), it has been shown that the pair creation rate is exponentially decreasing during inflation. Specifically, tiny black holes are favored in the early universe, but they can grow with ... |
1404.6541 | Eleni-Alexandra Kontou | Eleni-Alexandra Kontou and Ken D. Olum | Quantum inequality for a scalar field with a background potential | 20 pages | Phys. Rev. D 90, 024031 (2014) | 10.1103/PhysRevD.90.024031 | null | gr-qc math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum inequalities are bounds on negative time-averages of the energy
density of a quantum field. They can be used to rule out exotic spacetimes in
general relativity. We study quantum inequalities for a scalar field with a
background potential (i.e., a mass that varies with spacetime position) in
Minkowski space. ... | [
{
"created": "Fri, 25 Apr 2014 20:23:20 GMT",
"version": "v1"
}
] | 2014-07-16 | [
[
"Kontou",
"Eleni-Alexandra",
""
],
[
"Olum",
"Ken D.",
""
]
] | Quantum inequalities are bounds on negative time-averages of the energy density of a quantum field. They can be used to rule out exotic spacetimes in general relativity. We study quantum inequalities for a scalar field with a background potential (i.e., a mass that varies with spacetime position) in Minkowski space. We... |
1010.1123 | Joan Josep Ferrando | Joan J. Ferrando and Juan A. S\'aez | Obtaining the Weyl tensor from the Bel-Robinson tensor | 21 pages | Gen.Rel.Grav.42: 1469-1490,2010 | 10.1007/s10714-009-0921-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The algebraic study of the Bel-Robinson tensor proposed and initiated in a
previous work (Gen. Relativ. Gravit. {\bf 41}, see ref [11]) is achieved. The
canonical form of the different algebraic types is obtained in terms of
Bel-Robinson eigen-tensors. An algorithmic determination of the Weyl tensor
from the Bel-Robi... | [
{
"created": "Wed, 6 Oct 2010 11:11:39 GMT",
"version": "v1"
}
] | 2011-01-13 | [
[
"Ferrando",
"Joan J.",
""
],
[
"Sáez",
"Juan A.",
""
]
] | The algebraic study of the Bel-Robinson tensor proposed and initiated in a previous work (Gen. Relativ. Gravit. {\bf 41}, see ref [11]) is achieved. The canonical form of the different algebraic types is obtained in terms of Bel-Robinson eigen-tensors. An algorithmic determination of the Weyl tensor from the Bel-Robins... |
gr-qc/0304024 | David R. Fiske | David R. Fiske (University of Maryland) | Toward Making the Constraint Hypersurface an Attractor in Free Evolution | 6 pages, 3 figures, 1 table. Uses REVTeX4 | Phys.Rev. D69 (2004) 047501 | 10.1103/PhysRevD.69.047501 | null | gr-qc physics.comp-ph | null | There is an abundance of empirical evidence in the numerical relativity
literature that the form in which the Einstein evolution equations are written
plays a significant role in the lifetime of numerical simulations. This paper
attempts to present a consistent framework for modifying any system of
evolution equation... | [
{
"created": "Fri, 4 Apr 2003 20:57:26 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Fiske",
"David R.",
"",
"University of Maryland"
]
] | There is an abundance of empirical evidence in the numerical relativity literature that the form in which the Einstein evolution equations are written plays a significant role in the lifetime of numerical simulations. This paper attempts to present a consistent framework for modifying any system of evolution equations ... |
gr-qc/9506022 | Larry Kidder | Lawrence E. Kidder | Coalescing binary systems of compact objects to (post)$^{5/2}-Newtonian
order. V. Spin Effects | 60 pages, revtex 3.0, 16 figures available upon request, to appear in
Physical Review D | Phys.Rev. D52 (1995) 821-847 | 10.1103/PhysRevD.52.821 | WUGRAV-94-6, NU-GR-11 | gr-qc | null | We examine the effects of spin-orbit and spin-spin coupling on the inspiral
of a coalescing binary system of spinning compact objects and on the
gravitational radiation emitted therefrom. Using a formalism developed by
Blanchet, Damour, and Iyer, we calculate the contributions due to the spins of
the bodies to the sy... | [
{
"created": "Thu, 8 Jun 1995 20:24:19 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Kidder",
"Lawrence E.",
""
]
] | We examine the effects of spin-orbit and spin-spin coupling on the inspiral of a coalescing binary system of spinning compact objects and on the gravitational radiation emitted therefrom. Using a formalism developed by Blanchet, Damour, and Iyer, we calculate the contributions due to the spins of the bodies to the symm... |
1604.04578 | Mauricio Cataldo MC | Mauricio Cataldo, Luis Liempi, Pablo Rodr\'iguez | Static spherically symmetric wormholes with isotropic pressure | 8 pages, 3 figures | Phys. Lett. B 757, 130-135 (2016) | 10.1016/j.physletb.2016.03.057 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study static spherically symmetric wormhole solutions
sustained by matter sources with isotropic pressure. We show that such
spherical wormholes do not exist in the framework of zero-tidal-force
wormholes. On the other hand, it is shown that for the often used power-law
shape function there is no sph... | [
{
"created": "Fri, 15 Apr 2016 17:29:02 GMT",
"version": "v1"
}
] | 2016-05-04 | [
[
"Cataldo",
"Mauricio",
""
],
[
"Liempi",
"Luis",
""
],
[
"Rodríguez",
"Pablo",
""
]
] | In this paper we study static spherically symmetric wormhole solutions sustained by matter sources with isotropic pressure. We show that such spherical wormholes do not exist in the framework of zero-tidal-force wormholes. On the other hand, it is shown that for the often used power-law shape function there is no spher... |
1907.00799 | Houwen Wu | Kangkai Liang, Peng Wang, Houwen Wu, Mingtao Yang | Phase Structures and Transitions of Born-Infeld Black Holes in a Grand
Canonical Ensemble | 29 pages, 22 figures. arXiv admin note: text overlap with
arXiv:1901.06216 | null | 10.1140/epjc/s10052-020-7750-z | CTP-SCU/2019004 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To make a Born-Infeld (BI) black hole thermally stable, we consider two types
of boundary conditions, i.e., the asymptotically anti-de Sitter (AdS) space and
a Dirichlet wall placed in the asymptotically flat space. The phase structures
and transitions of these two types of BI black holes, namely BI-AdS black holes
a... | [
{
"created": "Fri, 28 Jun 2019 16:17:38 GMT",
"version": "v1"
}
] | 2020-03-18 | [
[
"Liang",
"Kangkai",
""
],
[
"Wang",
"Peng",
""
],
[
"Wu",
"Houwen",
""
],
[
"Yang",
"Mingtao",
""
]
] | To make a Born-Infeld (BI) black hole thermally stable, we consider two types of boundary conditions, i.e., the asymptotically anti-de Sitter (AdS) space and a Dirichlet wall placed in the asymptotically flat space. The phase structures and transitions of these two types of BI black holes, namely BI-AdS black holes and... |
gr-qc/0512105 | Mohammad Vahid Takook | Samad Behroozi, Shahriar Rouhani, Mohammad Vahid Takook and Mohammad
Reza Tanhayi | Conformally invariant wave-equations and massless fields in de Sitter
spacetime | 21 pages, LaTeX, some details added | Phys.Rev.D74:124014,2006 | 10.1103/PhysRevD.74.124014 | null | gr-qc | null | Conformally invariant wave equations in de Sitter space, for scalar and
vector fields, are introduced in the present paper. Solutions of their wave
equations and the related two-point functions, in the ambient space notation,
have been calculated. The ``Hilbert'' space structure and the field operator,
in terms of co... | [
{
"created": "Mon, 19 Dec 2005 13:17:54 GMT",
"version": "v1"
},
{
"created": "Sun, 17 Dec 2006 11:21:32 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Behroozi",
"Samad",
""
],
[
"Rouhani",
"Shahriar",
""
],
[
"Takook",
"Mohammad Vahid",
""
],
[
"Tanhayi",
"Mohammad Reza",
""
]
] | Conformally invariant wave equations in de Sitter space, for scalar and vector fields, are introduced in the present paper. Solutions of their wave equations and the related two-point functions, in the ambient space notation, have been calculated. The ``Hilbert'' space structure and the field operator, in terms of coor... |
1802.03288 | Roberto De Pietri | Roberto De Pietri, Alessandra Feo, Jos\'e A. Font, Frank L\"offler,
Francesco Maione, Michele Pasquali and Nikolaos Stergioulas | Convective Excitation of Inertial Modes in Binary Neutron Star Mergers | 6 pages, 4 figures | Phys. Rev. Lett. 120, 221101 (2018) | 10.1103/PhysRevLett.120.221101 | LIGO-P1800025 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the first very long-term simulations (extending up to ~140 ms
after merger) of binary neutron star mergers with piecewise polytropic
equations of state and in full general relativity. Our simulations reveal that
at a time of 30-50 ms after merger, parts of the star become convectively
unstable, which trigg... | [
{
"created": "Fri, 9 Feb 2018 14:50:10 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Jul 2018 08:12:07 GMT",
"version": "v2"
}
] | 2018-07-04 | [
[
"De Pietri",
"Roberto",
""
],
[
"Feo",
"Alessandra",
""
],
[
"Font",
"José A.",
""
],
[
"Löffler",
"Frank",
""
],
[
"Maione",
"Francesco",
""
],
[
"Pasquali",
"Michele",
""
],
[
"Stergioulas",
"Nikolaos",
"... | We present the first very long-term simulations (extending up to ~140 ms after merger) of binary neutron star mergers with piecewise polytropic equations of state and in full general relativity. Our simulations reveal that at a time of 30-50 ms after merger, parts of the star become convectively unstable, which trigger... |
gr-qc/9602003 | Jorma Louko | Jorma Louko and Stephen N. Winters-Hilt | Hamiltonian thermodynamics of the Reissner-Nordstr\"om-anti-de Sitter
black hole | 34 pages, REVTeX v3.0. (Minor corrections and presentational
revisions; added references.) | Phys.Rev.D54:2647-2663,1996 | 10.1103/PhysRevD.54.2647 | PP96--63, WISC--MILW--96--TH--11 | gr-qc hep-th | null | We consider the Hamiltonian dynamics and thermodynamics of spherically
symmetric Einstein-Maxwell spacetimes with a negative cosmological constant. We
impose boundary conditions that enforce every classical solution to be an
exterior region of a Reissner-Nordstr\"om-anti-de Sitter black hole with a
nondegenerate Kill... | [
{
"created": "Fri, 2 Feb 1996 00:09:56 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Sep 1996 16:13:08 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Louko",
"Jorma",
""
],
[
"Winters-Hilt",
"Stephen N.",
""
]
] | We consider the Hamiltonian dynamics and thermodynamics of spherically symmetric Einstein-Maxwell spacetimes with a negative cosmological constant. We impose boundary conditions that enforce every classical solution to be an exterior region of a Reissner-Nordstr\"om-anti-de Sitter black hole with a nondegenerate Killin... |
1807.04156 | Christopher Hilweg | Robert Beig, Piotr T. Chru\'sciel, Christopher Hilweg, Philipp
Kornreich and Philip Walther | Weakly gravitating isotropic waveguides | 35 pages, 1 figure | Class. Quantum Grav. 35 244001 (2018) | 10.1088/1361-6382/aae873 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse the effect of post-Newtonian gravitational fields on propagation
of light in a cylindrical waveguide in both a straight configuration and a
spool configuration. We derive an equation for the dependence of the wave
vector upon the vertical location of the waveguide. It is shown that the
gravitational field ... | [
{
"created": "Wed, 11 Jul 2018 14:30:26 GMT",
"version": "v1"
}
] | 2022-10-03 | [
[
"Beig",
"Robert",
""
],
[
"Chruściel",
"Piotr T.",
""
],
[
"Hilweg",
"Christopher",
""
],
[
"Kornreich",
"Philipp",
""
],
[
"Walther",
"Philip",
""
]
] | We analyse the effect of post-Newtonian gravitational fields on propagation of light in a cylindrical waveguide in both a straight configuration and a spool configuration. We derive an equation for the dependence of the wave vector upon the vertical location of the waveguide. It is shown that the gravitational field pr... |
1701.02645 | Piotr Jaranowski | Thibault Damour and Piotr Jaranowski | On the four-loop static contribution to the gravitational interaction
potential of two point masses | 19 pages, 10 figures | Phys. Rev. D 95, 084005 (2017) | 10.1103/PhysRevD.95.084005 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute a subset of three, velocity-independent four-loop (and fourth
post-Newtonian) contributions to the harmonic-coordinates effective action of a
gravitationally interacting system of two point-masses. We find that, after
summing the three terms, the coefficient of the total contribution is rational,
due to a ... | [
{
"created": "Tue, 10 Jan 2017 15:46:14 GMT",
"version": "v1"
}
] | 2017-04-12 | [
[
"Damour",
"Thibault",
""
],
[
"Jaranowski",
"Piotr",
""
]
] | We compute a subset of three, velocity-independent four-loop (and fourth post-Newtonian) contributions to the harmonic-coordinates effective action of a gravitationally interacting system of two point-masses. We find that, after summing the three terms, the coefficient of the total contribution is rational, due to a re... |
2102.02239 | Vasilis Oikonomou | S.D. Odintsov, V.K. Oikonomou, F.P. Fronimos | Late-Time Cosmology of Scalar-Coupled $f(R, \mathcal{G})$ Gravity | CQG Accepted, abstract reduced due to arXiv limitations | null | 10.1088/1361-6382/abe24f | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work by using a numerical analysis, we investigate in a quantitative
way the late-time dynamics of scalar coupled $f(R,\mathcal{G})$ gravity.
Particularly, we consider a Gauss-Bonnet term coupled to the scalar field
coupling function $\xi(\phi)$, and we study three types of models, one with
$f(R)$ terms that ... | [
{
"created": "Wed, 3 Feb 2021 19:20:15 GMT",
"version": "v1"
}
] | 2022-07-27 | [
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
],
[
"Fronimos",
"F. P.",
""
]
] | In this work by using a numerical analysis, we investigate in a quantitative way the late-time dynamics of scalar coupled $f(R,\mathcal{G})$ gravity. Particularly, we consider a Gauss-Bonnet term coupled to the scalar field coupling function $\xi(\phi)$, and we study three types of models, one with $f(R)$ terms that ar... |
2301.12107 | Himanshu Chaudhary | Himanshu Chaudhary, Amine Bouali, Ujjal Debnath, Tanusree Roy,
G.Mustafa | Constraints on the Parameterized Deceleration Parameter in FLRW Universe | 16 pages, 24 figures, accepted for publication in physica scripta | null | 10.1088/1402-4896/acea02 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Confirmation of accelerated expansion of the universe probed the concept of
dark energy theory, and since then, numerous models have been introduced to
explain its origin and nature. The present work is based on reconstructing dark
energy by parametrization of the deceleration parameter in the FRW universe
filled wit... | [
{
"created": "Sat, 28 Jan 2023 06:33:50 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Sep 2023 19:42:42 GMT",
"version": "v2"
},
{
"created": "Fri, 6 Oct 2023 07:48:35 GMT",
"version": "v3"
}
] | 2023-10-09 | [
[
"Chaudhary",
"Himanshu",
""
],
[
"Bouali",
"Amine",
""
],
[
"Debnath",
"Ujjal",
""
],
[
"Roy",
"Tanusree",
""
],
[
"Mustafa",
"G.",
""
]
] | Confirmation of accelerated expansion of the universe probed the concept of dark energy theory, and since then, numerous models have been introduced to explain its origin and nature. The present work is based on reconstructing dark energy by parametrization of the deceleration parameter in the FRW universe filled with ... |
0812.1298 | Marcin Kazmierczak | Marcin Ka\'zmierczak | Einstein-Cartan gravity with Holst term and fermions | 11 pages, typos corrected, final version, to appear in Phys. Rev. D | Phys.Rev.D79:064029,2009 | 10.1103/PhysRevD.79.064029 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the consequences of the ambiguity of minimal coupling
procedure for Einstein-Cartan gravity with Holst term and fermions. A new
insight is provided into the nature and physical relevance of coupling
procedures considered hitherto in the context of Ashtekar-Barbero-Immirzi
formalism with fermions. The i... | [
{
"created": "Sat, 6 Dec 2008 17:19:05 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Jan 2009 14:15:42 GMT",
"version": "v2"
},
{
"created": "Wed, 25 Feb 2009 18:57:24 GMT",
"version": "v3"
},
{
"created": "Wed, 25 Mar 2009 17:23:24 GMT",
"version": "v4"
}
] | 2009-12-11 | [
[
"Kaźmierczak",
"Marcin",
""
]
] | We investigate the consequences of the ambiguity of minimal coupling procedure for Einstein-Cartan gravity with Holst term and fermions. A new insight is provided into the nature and physical relevance of coupling procedures considered hitherto in the context of Ashtekar-Barbero-Immirzi formalism with fermions. The iss... |
2112.09154 | Damianos Iosifidis | Damianos Iosifidis | The Full Quadratic Metric-Affine Gravity (Including Parity Odd Terms):
Exact solutions for the Affine-Connection | 20 pages, no figures. arXiv admin note: text overlap with
arXiv:2109.13293 | null | 10.1088/1361-6382/ac6058 | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We consider the most general Quadratic Metric-Affine Gravity setup in the
presence of generic matter sources with non-vanishing hypermomentum. The
gravitational action consists of all $17$ quadratic invariants (both parity
even and odd) in torsion and non-metricity as well as their mixings, along with
the terms that ... | [
{
"created": "Thu, 16 Dec 2021 19:01:46 GMT",
"version": "v1"
}
] | 2022-05-18 | [
[
"Iosifidis",
"Damianos",
""
]
] | We consider the most general Quadratic Metric-Affine Gravity setup in the presence of generic matter sources with non-vanishing hypermomentum. The gravitational action consists of all $17$ quadratic invariants (both parity even and odd) in torsion and non-metricity as well as their mixings, along with the terms that ar... |
gr-qc/0406111 | Josep Llosa | Josep Llosa and Daniel Soler | On the degrees of freedom of a semi-Riemannian metric | null | Class.Quant.Grav. 22 (2005) 893-908 | 10.1088/0264-9381/22/5/009 | LFM-04-03 | gr-qc | null | A semi-Riemannian metric in a n-manifold has n(n-1)/2 degrees of freedom,
i.e. as many as the number of components of a differential 2-form. We prove
that any semi-Riemannian metric can be obtained as a deformation of a constant
curvature metric, this deformation being parametrized by a 2-form
| [
{
"created": "Mon, 28 Jun 2004 09:59:18 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Llosa",
"Josep",
""
],
[
"Soler",
"Daniel",
""
]
] | A semi-Riemannian metric in a n-manifold has n(n-1)/2 degrees of freedom, i.e. as many as the number of components of a differential 2-form. We prove that any semi-Riemannian metric can be obtained as a deformation of a constant curvature metric, this deformation being parametrized by a 2-form |
2112.02114 | Lorenzo K\"uchler | Geoffrey Comp\`ere and Lorenzo K\"uchler | Asymptotically matched quasi-circular inspiral and transition-to-plunge
in the small mass ratio expansion | Minor changes. 39 pages, 4 ancillary files | SciPost Phys. 13, 043 (2022) | 10.21468/SciPostPhys.13.2.043 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the small mass ratio expansion and on the equatorial plane, the two-body
problem for point particles in general relativity admits a quasi-circular
inspiral motion followed by a transition-to-plunge motion. We first derive the
equations governing the quasi-circular inspiral in the Kerr background at
adiabatic, post... | [
{
"created": "Fri, 3 Dec 2021 19:00:10 GMT",
"version": "v1"
},
{
"created": "Sun, 1 May 2022 12:31:10 GMT",
"version": "v2"
},
{
"created": "Tue, 10 May 2022 13:55:13 GMT",
"version": "v3"
},
{
"created": "Mon, 16 May 2022 08:27:21 GMT",
"version": "v4"
}
] | 2022-08-31 | [
[
"Compère",
"Geoffrey",
""
],
[
"Küchler",
"Lorenzo",
""
]
] | In the small mass ratio expansion and on the equatorial plane, the two-body problem for point particles in general relativity admits a quasi-circular inspiral motion followed by a transition-to-plunge motion. We first derive the equations governing the quasi-circular inspiral in the Kerr background at adiabatic, post-a... |
gr-qc/0211104 | Edward Malec | Janusz Karkowski and Edward Malec | Gravitational redshifts in electromagnetic bursts occuring near
Schwarzschild horizon | 4 pages, 2 figures. To appear in the Class. Q. Grav | Class.Quant.Grav. 20 (2003) 85-92 | 10.1088/0264-9381/20/1/306 | null | gr-qc hep-th | null | It was suggested earlier that the gravitational redshift formula can be
invalid when the effect of the backscattering is strong. It is demonstrated
here numerically, for an exemplary electromagnetic pulse that is: i) initially
located very close to the horizon of a Schwarzschild black hole and ii)
strongly backscatte... | [
{
"created": "Fri, 29 Nov 2002 12:06:41 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Karkowski",
"Janusz",
""
],
[
"Malec",
"Edward",
""
]
] | It was suggested earlier that the gravitational redshift formula can be invalid when the effect of the backscattering is strong. It is demonstrated here numerically, for an exemplary electromagnetic pulse that is: i) initially located very close to the horizon of a Schwarzschild black hole and ii) strongly backscattere... |
gr-qc/0605148 | Daniel Grumiller | L. Bergamin and D. Grumiller | Killing horizons kill horizon degrees | 5 pages, received honorable mention in the GRF Essay Contest 2006,
v2: version to be published in IJMPD | Int.J.Mod.Phys.D15:2279-2284,2006 | 10.1142/S0218271806009571 | MIT-CTP/3750 | gr-qc hep-th | null | Frequently it is argued that the microstates responsible for the
Bekenstein-Hawking entropy should arise from some physical degrees of freedom
located near or on the black hole horizon. In this Essay we elucidate that
instead entropy may emerge from the conversion of physical degrees of freedom,
attached to a generic... | [
{
"created": "Tue, 30 May 2006 21:20:16 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Nov 2006 15:35:40 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Bergamin",
"L.",
""
],
[
"Grumiller",
"D.",
""
]
] | Frequently it is argued that the microstates responsible for the Bekenstein-Hawking entropy should arise from some physical degrees of freedom located near or on the black hole horizon. In this Essay we elucidate that instead entropy may emerge from the conversion of physical degrees of freedom, attached to a generic b... |
gr-qc/0607143 | Andrea Passamonti | Andrea Passamonti | Non-linear Oscillations of Compact Stars and Gravitational Waves | 172 pages, 32 figures, PhD thesis, University of Portsmouth | null | 10.1088/1742-6596/68/1/012052 | null | gr-qc astro-ph | null | This thesis investigates in the time domain a particular class of second
order perturbations of a perfect fluid non-rotating compact star: those arising
from the coupling between first order radial and non-radial perturbations. This
problem has been treated by developing a gauge invariant formalism based on the
2-par... | [
{
"created": "Mon, 31 Jul 2006 17:29:56 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Passamonti",
"Andrea",
""
]
] | This thesis investigates in the time domain a particular class of second order perturbations of a perfect fluid non-rotating compact star: those arising from the coupling between first order radial and non-radial perturbations. This problem has been treated by developing a gauge invariant formalism based on the 2-param... |
2208.03932 | Andres Vargas-Sanchez Mr | Andr\'es F. Vargas, Andrew Melatos | Search for continuous gravitational waves from PSR J0437$-$4715 with a
hidden Markov model in O3 LIGO data | null | Phys. Rev. D 107 (2022) 064062 | 10.1103/PhysRevD.107.064062 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Results are presented for a semi-coherent search for continuous gravitational
waves from the millisecond pulsar PSR J0437$-$4715, using a hidden Markov model
to track spin wandering, in LIGO data from the third LIGO-Virgo observing run.
This is the first search for PSR J0437$-$4715 to cover a wide frequency range
fro... | [
{
"created": "Mon, 8 Aug 2022 06:19:15 GMT",
"version": "v1"
}
] | 2023-05-17 | [
[
"Vargas",
"Andrés F.",
""
],
[
"Melatos",
"Andrew",
""
]
] | Results are presented for a semi-coherent search for continuous gravitational waves from the millisecond pulsar PSR J0437$-$4715, using a hidden Markov model to track spin wandering, in LIGO data from the third LIGO-Virgo observing run. This is the first search for PSR J0437$-$4715 to cover a wide frequency range from ... |
2407.04666 | Daniela Magos | Mauricio Bellini, Juan Ignacio Musmarra and Daniela Magos | Geometric Hawking radiation of Schwarzschild Black Hole with novel
quantum algebra | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the context of an extended General Relativity theory with boundary terms
included, we introduce a new nonlinear quantum algebra involving a quantum
differential operator, with the aim to calculate quantum geometric alterations
when a particle is created in the vicinity of a Schwarzschild black-hole by the
Hawking ... | [
{
"created": "Fri, 5 Jul 2024 17:19:45 GMT",
"version": "v1"
}
] | 2024-07-08 | [
[
"Bellini",
"Mauricio",
""
],
[
"Musmarra",
"Juan Ignacio",
""
],
[
"Magos",
"Daniela",
""
]
] | In the context of an extended General Relativity theory with boundary terms included, we introduce a new nonlinear quantum algebra involving a quantum differential operator, with the aim to calculate quantum geometric alterations when a particle is created in the vicinity of a Schwarzschild black-hole by the Hawking ra... |
gr-qc/0512062 | W. F. Kao | W.F. Kao | Modified Newtonian Dynamics and Induced gravity | 8 pages, typo corrected | null | null | null | gr-qc astro-ph | null | Modified Newtonian dynamics, a successful alternative to the cosmic dark
matter model, proposes that gravitational field deviates from the Newtonian law
when the field strength $g$ is weaker than a critical value $g_0$. We will show
that the dynamics of MOND can be derived from an induced gravity model. New
dynamics ... | [
{
"created": "Sun, 11 Dec 2005 10:06:04 GMT",
"version": "v1"
},
{
"created": "Mon, 29 May 2006 19:58:49 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Kao",
"W. F.",
""
]
] | Modified Newtonian dynamics, a successful alternative to the cosmic dark matter model, proposes that gravitational field deviates from the Newtonian law when the field strength $g$ is weaker than a critical value $g_0$. We will show that the dynamics of MOND can be derived from an induced gravity model. New dynamics is... |
gr-qc/0506132 | Christodoulakis Theodosios | T. Christodoulakis, Th. Grammenos, Ch. Helias, P.G. Kevrekidis, A.
Spanou | Decoupling of the general scalar field mode and the solution space for
Bianchi type I and V cosmologies coupled to perfect fluid sources | latex2e source file,14 pages, no figures; (v3): minor corrections, to
appear in J. Math. Phys | J.Math.Phys. 47 (2006) 042505 | 10.1063/1.2188210 | null | gr-qc | null | The scalar field degree of freedom in Einstein's plus Matter field equations
is decoupled for Bianchi type I and V general cosmological models. The source,
apart from the minimally coupled scalar field with arbitrary potential V(Phi),
is provided by a perfect fluid obeying a general equation of state p =p(rho).
The r... | [
{
"created": "Wed, 29 Jun 2005 12:13:55 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Oct 2005 13:05:21 GMT",
"version": "v2"
},
{
"created": "Fri, 24 Feb 2006 11:23:54 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Christodoulakis",
"T.",
""
],
[
"Grammenos",
"Th.",
""
],
[
"Helias",
"Ch.",
""
],
[
"Kevrekidis",
"P. G.",
""
],
[
"Spanou",
"A.",
""
]
] | The scalar field degree of freedom in Einstein's plus Matter field equations is decoupled for Bianchi type I and V general cosmological models. The source, apart from the minimally coupled scalar field with arbitrary potential V(Phi), is provided by a perfect fluid obeying a general equation of state p =p(rho). The res... |
2104.12646 | Kallol Dey | Kallol Dey, Nikolaos Karnesis, Alexandre Toubiana, Enrico Barausse,
Natalia Korsakova, Quentin Baghi and Soumen Basak | Effect of data gaps on the detectability and parameter estimation of
massive black hole binaries with LISA | 25 pages, 14 figures. Matches version published in Physical Review D | Phys. Rev. D 104, 044035 (2021) | 10.1103/PhysRevD.104.044035 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Massive black hole binaries are expected to provide the strongest
gravitational wave signals for the Laser Interferometer Space Antenna (LISA), a
space mission targeting $\sim\,$mHz frequencies. As a result of the
technological challenges inherent in the mission's design, implementation and
long duration (4 yr nomina... | [
{
"created": "Mon, 26 Apr 2021 15:16:03 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Aug 2021 17:22:53 GMT",
"version": "v2"
}
] | 2021-08-18 | [
[
"Dey",
"Kallol",
""
],
[
"Karnesis",
"Nikolaos",
""
],
[
"Toubiana",
"Alexandre",
""
],
[
"Barausse",
"Enrico",
""
],
[
"Korsakova",
"Natalia",
""
],
[
"Baghi",
"Quentin",
""
],
[
"Basak",
"Soumen",
""
]
... | Massive black hole binaries are expected to provide the strongest gravitational wave signals for the Laser Interferometer Space Antenna (LISA), a space mission targeting $\sim\,$mHz frequencies. As a result of the technological challenges inherent in the mission's design, implementation and long duration (4 yr nominal)... |
1207.3361 | Shaon Ghosh | Sukanta Bose, Shaon Ghosh and Ajith Parameswaran | Systematic errors in measuring parameters of non-spinning compact binary
coalescences with post-Newtonian templates | 8 pages, 5 figures | null | 10.1088/0264-9381/27/11/114001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the astrophysical impact of inaccurate and incomplete modeling of
the gravitational waveforms from compact binary coalescences (CBCs). We do so
by the matched filtering of complete inspiral-merger-ringdown (IMR) signals
with a bank of inspiral-phase templates modeled after the 3.5 post-Newtonian
TaylorT1 app... | [
{
"created": "Fri, 13 Jul 2012 20:32:20 GMT",
"version": "v1"
}
] | 2012-07-17 | [
[
"Bose",
"Sukanta",
""
],
[
"Ghosh",
"Shaon",
""
],
[
"Parameswaran",
"Ajith",
""
]
] | We study the astrophysical impact of inaccurate and incomplete modeling of the gravitational waveforms from compact binary coalescences (CBCs). We do so by the matched filtering of complete inspiral-merger-ringdown (IMR) signals with a bank of inspiral-phase templates modeled after the 3.5 post-Newtonian TaylorT1 appro... |
0912.1293 | Patrick Peter | P. Peter (IAP) | Observing alternatives to inflation | 12 pages, no figure, proceedings "Workshop on Cosmic Structure and
Evolution" - Sept. 2009, Bielefeld, Germany | PoS Cosmology2009:003,2009 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the possibility that the inflationary paradigm, undoubtfully
today's best framework to understand all the present cosmological data, may
still have some viable challengers. The underlying idea for such discussions is
that although inflation already passed quite a large number of tests, indeed
enough to mak... | [
{
"created": "Mon, 7 Dec 2009 17:37:48 GMT",
"version": "v1"
}
] | 2010-11-15 | [
[
"Peter",
"P.",
"",
"IAP"
]
] | We discuss the possibility that the inflationary paradigm, undoubtfully today's best framework to understand all the present cosmological data, may still have some viable challengers. The underlying idea for such discussions is that although inflation already passed quite a large number of tests, indeed enough to make ... |
1407.2909 | Lee Smolin | Lee Smolin | Linking shape dynamics and loop quantum gravity | 12 pages, no figures, mistake fixed, other small changes | Phys. Rev. D 90, 044070 (2014) | 10.1103/PhysRevD.90.044070 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Shape dynamics is a reformulation of general relativity, locally equivalent
to Einstein's theory, in which the refoliation invariance of the older theory
is traded for local scale invariance. Shape dynamics is here derived in a
formulation related to the Ashtekar variables by beginning with a modification
of the Pleb... | [
{
"created": "Thu, 10 Jul 2014 19:19:49 GMT",
"version": "v1"
},
{
"created": "Wed, 24 May 2017 19:02:29 GMT",
"version": "v2"
}
] | 2017-05-26 | [
[
"Smolin",
"Lee",
""
]
] | Shape dynamics is a reformulation of general relativity, locally equivalent to Einstein's theory, in which the refoliation invariance of the older theory is traded for local scale invariance. Shape dynamics is here derived in a formulation related to the Ashtekar variables by beginning with a modification of the Pleban... |
2305.10481 | Minglei Xiao | Hao-Lin Li, Zhe Ren, Ming-Lei Xiao, Jiang-Hao Yu, Yu-Hui Zheng | On-shell Operator Construction in the Effective Field Theory of Gravity | 128 pages | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct the on-shell amplitude basis and the corresponding effective
operators for generic modified gravity theory, such as pure gravity with higher
derivatives, scalar-tensor gravity, Einstein-Yang-Mills, etc. Taking the Weyl
tensor as the building block, we utilize the Young tensor technique to obtain
independ... | [
{
"created": "Wed, 17 May 2023 18:00:01 GMT",
"version": "v1"
}
] | 2023-05-23 | [
[
"Li",
"Hao-Lin",
""
],
[
"Ren",
"Zhe",
""
],
[
"Xiao",
"Ming-Lei",
""
],
[
"Yu",
"Jiang-Hao",
""
],
[
"Zheng",
"Yu-Hui",
""
]
] | We construct the on-shell amplitude basis and the corresponding effective operators for generic modified gravity theory, such as pure gravity with higher derivatives, scalar-tensor gravity, Einstein-Yang-Mills, etc. Taking the Weyl tensor as the building block, we utilize the Young tensor technique to obtain independen... |
1104.4608 | Nathalie Deruelle | Nathalie Deruelle | Nordstrom's scalar theory of gravity and the equivalence principle | null | null | 10.1007/s10714-011-1247-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Nordstrom's theory of gravity, which describes gravity by a scalar field in
flat spacetime, is observationally ruled out. It is however the only theory of
gravity with General Relativity to obey the strong equivalence principle. I
show in this paper that this remarkable property is true beyond post-newtonian
level an... | [
{
"created": "Sun, 24 Apr 2011 07:51:16 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Deruelle",
"Nathalie",
""
]
] | Nordstrom's theory of gravity, which describes gravity by a scalar field in flat spacetime, is observationally ruled out. It is however the only theory of gravity with General Relativity to obey the strong equivalence principle. I show in this paper that this remarkable property is true beyond post-newtonian level and ... |
1402.1524 | Clifford Chafin | Clifford E Chafin | Globally Causal Solutions for Gravitational Collapse | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Through an illuminating thought experiment we demonstrate that the
nonsingular "continued collapse" picture of a black hole is the only consistent
and physical one. We provide a class exact solutions on the boundary of the
space of physical configurations. This will show that all the other known exact
solutions are u... | [
{
"created": "Thu, 6 Feb 2014 23:15:00 GMT",
"version": "v1"
}
] | 2014-02-10 | [
[
"Chafin",
"Clifford E",
""
]
] | Through an illuminating thought experiment we demonstrate that the nonsingular "continued collapse" picture of a black hole is the only consistent and physical one. We provide a class exact solutions on the boundary of the space of physical configurations. This will show that all the other known exact solutions are unp... |
0705.4147 | Ujjal Debnath | Writambhara Chakraborty, Ujjal Debnath | Effect of Dynamical Cosmological Constant in presence of Modified
Chaplygin Gas for Accelerating Universe | 12 latex pages, 14 figures, revtex style | Astrophys.Space Sci.313:409-417,2008 | 10.1007/s10509-007-9710-6 | null | gr-qc | null | In this paper we have considered the Universe to be filled with Modified Gas
and the Cosmological Constant $\Lambda$ to be time-dependent with or without
the Gravitational Constant $G$ to be time-dependent. We have considered various
phenomenological models for $\Lambda$, viz., $\Lambda\propto\rho,
\Lambda\propto\fra... | [
{
"created": "Tue, 29 May 2007 06:24:14 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Chakraborty",
"Writambhara",
""
],
[
"Debnath",
"Ujjal",
""
]
] | In this paper we have considered the Universe to be filled with Modified Gas and the Cosmological Constant $\Lambda$ to be time-dependent with or without the Gravitational Constant $G$ to be time-dependent. We have considered various phenomenological models for $\Lambda$, viz., $\Lambda\propto\rho, \Lambda\propto\frac{... |
1605.03618 | Surajit Chattopadhyay | Surajit Chattopadhyay | Viscous extended holographic Ricci dark energy in the framework of
standard Eckart theory | 18 pages, 12 figures | Mod. Phys. Lett. A, Vol. 31, No. 36 (2016) 1650202 | 10.1142/S0217732316502023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work we report a study on the viscous extended holographic
Ricci dark energy (EHRDE) model under the assumption of existence of bulk
viscosity in the linear barotropic fluid and the EHRDE in the framework of
standard Eckart theory of relativistic irreversible thermodynamics and it has
been observed tha... | [
{
"created": "Thu, 5 May 2016 11:13:04 GMT",
"version": "v1"
}
] | 2016-11-03 | [
[
"Chattopadhyay",
"Surajit",
""
]
] | In the present work we report a study on the viscous extended holographic Ricci dark energy (EHRDE) model under the assumption of existence of bulk viscosity in the linear barotropic fluid and the EHRDE in the framework of standard Eckart theory of relativistic irreversible thermodynamics and it has been observed that ... |
2101.12039 | Seyed Hossein Hendi Dr. | Mehrab Momennia and Seyed Hossein Hendi | Critical Phenomena and Reentrant Phase Transition of Asymptotically
Reissner-Nordstrom Black Holes | 10 Page with 5 captioned figures. Submitted for publication | Phys. Lett. B 822 (2021) 136692 | 10.1016/j.physletb.2021.136692 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | By considering a small correction to the Maxwell field, we show that the
resultant black hole solutions (also known as the asymptotically
Reissner--Nordstr\"{o}m black holes) undergo the reentrant phase transition and
can have a novel phase behavior. We also show that such a small nonlinear
correction of the Reissner... | [
{
"created": "Tue, 26 Jan 2021 21:47:26 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Feb 2021 07:16:49 GMT",
"version": "v2"
}
] | 2022-04-07 | [
[
"Momennia",
"Mehrab",
""
],
[
"Hendi",
"Seyed Hossein",
""
]
] | By considering a small correction to the Maxwell field, we show that the resultant black hole solutions (also known as the asymptotically Reissner--Nordstr\"{o}m black holes) undergo the reentrant phase transition and can have a novel phase behavior. We also show that such a small nonlinear correction of the Reissner--... |
gr-qc/9612060 | Neil John Cornish | Neil Cornish and Gary Gibbons (DAMTP Cambridge) | The tale of two centres | 20 pages, RevTeX, 7 figures included, TeX format changed | Class.Quant.Grav.14:1865-1881,1997 | 10.1088/0264-9381/14/7/020 | DAMTP-R96/59 | gr-qc chao-dyn hep-th nlin.CD | null | We study motion in the field of two fixed centres described by a family of
Einstein-dilaton-Maxwell theories. Transitions between regular and chaotic
motion are observed as the dilaton coupling is varied.
| [
{
"created": "Fri, 20 Dec 1996 15:23:20 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Dec 1996 13:07:21 GMT",
"version": "v2"
}
] | 2009-10-07 | [
[
"Cornish",
"Neil",
"",
"DAMTP Cambridge"
],
[
"Gibbons",
"Gary",
"",
"DAMTP Cambridge"
]
] | We study motion in the field of two fixed centres described by a family of Einstein-dilaton-Maxwell theories. Transitions between regular and chaotic motion are observed as the dilaton coupling is varied. |
1903.03434 | Krishnakanta Bhattacharya | Krishnakanta Bhattacharya, Sumit Dey, Bibhas Ranjan Majhi and Saurav
Samanta | A general framework to study the extremal phase transition of black
holes | 24 Pages, No figure, New comments added, To appear in Phys. Rev. D | Phys. Rev. D 99, 124047 (2019) | 10.1103/PhysRevD.99.124047 | null | gr-qc cond-mat.stat-mech hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the universality of some features for the extremal phase
transition of black holes and unify all the approaches which have been applied
in different spacetimes. Unlike the other existing approaches where the
information of the spacetime and its dimension is directly used to get various
results, we prov... | [
{
"created": "Fri, 8 Mar 2019 13:29:52 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Jun 2019 16:28:45 GMT",
"version": "v2"
}
] | 2019-07-03 | [
[
"Bhattacharya",
"Krishnakanta",
""
],
[
"Dey",
"Sumit",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
],
[
"Samanta",
"Saurav",
""
]
] | We investigate the universality of some features for the extremal phase transition of black holes and unify all the approaches which have been applied in different spacetimes. Unlike the other existing approaches where the information of the spacetime and its dimension is directly used to get various results, we provid... |
1707.02795 | Stefano Chinaglia | Stefano Chinaglia | A model of regular black hole satisfying the Weak Energy Condition | 15 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we discuss a star generated by some matter fluid, whose
stress-energy tensor is known. We investigate both the maximally symmetric
framework, where all the pressures are equal, and the dark energy framework,
with $P = -\rho$. We show that the first one is not able to produce a black
hole, while second... | [
{
"created": "Mon, 10 Jul 2017 10:55:25 GMT",
"version": "v1"
}
] | 2017-07-11 | [
[
"Chinaglia",
"Stefano",
""
]
] | In this article we discuss a star generated by some matter fluid, whose stress-energy tensor is known. We investigate both the maximally symmetric framework, where all the pressures are equal, and the dark energy framework, with $P = -\rho$. We show that the first one is not able to produce a black hole, while second o... |
2406.12558 | Shin'ichi Nojiri | Shin'ichi Nojiri and S. D. Odintsov | $F(Q)$ gravity with Gauss-Bonnet corrections: from early-time inflation
to late-time acceleration | LaTeX 20 pages, version to appear in Fortschritte der Physik -
Progress of Physics | null | null | KEK-TH-2629, KEK-Cosmo-0346 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that in the $f(Q)$ gravity with a non-metricity scalar $Q$, the
curvatures in Einstein's gravity, that is, the Riemann curvature constructed
from the standard Levi-Civita connection, could not be excluded or naturally
appear. The first observation is that even in $f(Q)$ gravity, the conservation
of the matter... | [
{
"created": "Tue, 18 Jun 2024 12:34:56 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Aug 2024 01:59:03 GMT",
"version": "v2"
}
] | 2024-08-16 | [
[
"Nojiri",
"Shin'ichi",
""
],
[
"Odintsov",
"S. D.",
""
]
] | We show that in the $f(Q)$ gravity with a non-metricity scalar $Q$, the curvatures in Einstein's gravity, that is, the Riemann curvature constructed from the standard Levi-Civita connection, could not be excluded or naturally appear. The first observation is that even in $f(Q)$ gravity, the conservation of the matter e... |
1709.00115 | Bruno Arderucio Costa | Bruno Arderucio-Costa, William Unruh | Model for Quantum Effects in Stellar Collapse | null | Phys. Rev. D 97, 024005 (2018) | 10.1103/PhysRevD.97.024005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a simple model for stellar collapse and evaluate the quantum
mechanical stress-energy tensor to argue that quantum effects do not play an
important role for the collapse of astrophysical objects.
| [
{
"created": "Fri, 1 Sep 2017 00:30:34 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Dec 2017 19:29:40 GMT",
"version": "v2"
}
] | 2018-01-17 | [
[
"Arderucio-Costa",
"Bruno",
""
],
[
"Unruh",
"William",
""
]
] | We present a simple model for stellar collapse and evaluate the quantum mechanical stress-energy tensor to argue that quantum effects do not play an important role for the collapse of astrophysical objects. |
1404.4479 | Alexei Zayats | Alexander B. Balakin, Ruslan K. Muharlyamov, Alexei E. Zayats | Axion-induced oscillations of cooperative electric field in a cosmic
magneto-active plasma | 7 pages, misprints corrected | Eur. Phys. J. D 68: 159, 2014 | 10.1140/epjd/e2014-50131-6 | null | gr-qc hep-th physics.plasm-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider one cosmological application of an axionic extension of the
Maxwell-Vlasov theory, which describes axionically induced oscillatory regime
in the state of global magnetic field evolving in the anisotropic expanding
(early) universe. We show that the cooperative electric field in the
relativistic plasma, be... | [
{
"created": "Thu, 17 Apr 2014 10:51:28 GMT",
"version": "v1"
},
{
"created": "Mon, 26 May 2014 15:57:07 GMT",
"version": "v2"
}
] | 2014-06-26 | [
[
"Balakin",
"Alexander B.",
""
],
[
"Muharlyamov",
"Ruslan K.",
""
],
[
"Zayats",
"Alexei E.",
""
]
] | We consider one cosmological application of an axionic extension of the Maxwell-Vlasov theory, which describes axionically induced oscillatory regime in the state of global magnetic field evolving in the anisotropic expanding (early) universe. We show that the cooperative electric field in the relativistic plasma, bein... |
1704.08198 | Pasquale Bosso | Pasquale Bosso, Saurya Das, Robert B. Mann | Planck scale Corrections to the Harmonic Oscillator, Coherent and
Squeezed States | 15 pages, 3 figures, accepted in Physical Review D | Phys. Rev. D 96, 066008 (2017) | 10.1103/PhysRevD.96.066008 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Generalized Uncertainty Principle (GUP) is a modification of Heisenberg's
Principle predicted by several theories of Quantum Gravity. It consists of a
modified commutator between position and momentum. In this work we compute
potentially observable effects that GUP implies for the harmonic oscillator,
coherent an... | [
{
"created": "Wed, 26 Apr 2017 16:37:18 GMT",
"version": "v1"
},
{
"created": "Sat, 12 Aug 2017 02:44:15 GMT",
"version": "v2"
}
] | 2017-09-13 | [
[
"Bosso",
"Pasquale",
""
],
[
"Das",
"Saurya",
""
],
[
"Mann",
"Robert B.",
""
]
] | The Generalized Uncertainty Principle (GUP) is a modification of Heisenberg's Principle predicted by several theories of Quantum Gravity. It consists of a modified commutator between position and momentum. In this work we compute potentially observable effects that GUP implies for the harmonic oscillator, coherent and ... |
1812.11742 | Vardarajan Suneeta | Amruta Sadhu, Vardarajan Suneeta | Study of Semiclassical Instability of the Schwarzschild AdS Black Hole
in the Large $D$ Limit | 41 pages, cut-paste typos in pedagogical Appendix fixed, no changes
to results or in main body of paper, supercedes journal version | null | 10.1088/1361-6382/ab1d69 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the semiclassical stability of the Schwarzschild AdS black hole in
the Euclidean partition function approach. We perform this computation in the
large $D$ limit and focus on scalar perturbations. We obtain the equations for
non-spherically symmetric scalar perturbations in a simple form. For a class of
per... | [
{
"created": "Mon, 31 Dec 2018 09:56:57 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Apr 2019 06:17:09 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Aug 2022 11:19:32 GMT",
"version": "v3"
}
] | 2022-08-04 | [
[
"Sadhu",
"Amruta",
""
],
[
"Suneeta",
"Vardarajan",
""
]
] | We analyze the semiclassical stability of the Schwarzschild AdS black hole in the Euclidean partition function approach. We perform this computation in the large $D$ limit and focus on scalar perturbations. We obtain the equations for non-spherically symmetric scalar perturbations in a simple form. For a class of pertu... |
gr-qc/0405078 | Y. Jack Ng | Y. Jack Ng (University of North Carolina) | Quantum Foam and Quantum Gravity Phenomenology | 29 pages, 4 figures, lectures given at the 40th Karpacz Winter School
on Theoretical Physics (Poland, Feb. 2004), submitted to Lect. Notes Phys | null | 10.1007/11377306_9 | null | gr-qc astro-ph hep-ph hep-th | null | Spacetime undergoes quantum fluctuations, giving rise to spacetime foam,
a.k.a. quantum foam. We discuss some properties of spacetime foam, and point
out the conceptual interconnections in the physics of quantum foam, black
holes, and quantum computation. We also discuss the phenomenology of quantum
foam, and conclud... | [
{
"created": "Fri, 14 May 2004 20:40:00 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Ng",
"Y. Jack",
"",
"University of North Carolina"
]
] | Spacetime undergoes quantum fluctuations, giving rise to spacetime foam, a.k.a. quantum foam. We discuss some properties of spacetime foam, and point out the conceptual interconnections in the physics of quantum foam, black holes, and quantum computation. We also discuss the phenomenology of quantum foam, and conclude ... |
0912.3884 | Sergey Strigin | S. E. Strigin and S. P. Vyatchanin | Analysis of parametric oscillatory instability in Fabry-Perot cavity
with Gauss and Laguerre-Gauss main mode profile | 11 pages, 3 figures | Phys.Lett.A374:1101-1104,2010 | 10.1016/j.physleta.2009.12.054 | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/3.0/ | We calculate the parametric instabilities in Fabry-Perot cavities of Advanced
VIRGO and LIGO interferometers with different main mode profiles. All unstable
combinations of elastic and Stokes modes both for the case with TEM00 and LG33
as a carriers are deduced.
| [
{
"created": "Sat, 19 Dec 2009 10:52:54 GMT",
"version": "v1"
}
] | 2010-04-14 | [
[
"Strigin",
"S. E.",
""
],
[
"Vyatchanin",
"S. P.",
""
]
] | We calculate the parametric instabilities in Fabry-Perot cavities of Advanced VIRGO and LIGO interferometers with different main mode profiles. All unstable combinations of elastic and Stokes modes both for the case with TEM00 and LG33 as a carriers are deduced. |
gr-qc/0111089 | Jorge Pullin | Rodolfo Gambini and Jorge Pullin | A finite spin-foam-based theory of three and four dimensional quantum
gravity | 4 pages, Revtex, 6 figures included with psfig, to appear in PRD | Phys.Rev. D66 (2002) 024020 | 10.1103/PhysRevD.66.024020 | LSU-REL-112601 | gr-qc hep-th | null | Starting from Ooguri's construction for $BF$ theory in three (and four)
dimensions, we show how to construct a well defined theory with an infinite
number of degrees of freedom. The spin network states that are kept invariant
by the evolution operators of the theory are exact solutions of the Hamiltonian
constraint o... | [
{
"created": "Mon, 26 Nov 2001 15:16:11 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Jul 2002 18:34:47 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Gambini",
"Rodolfo",
""
],
[
"Pullin",
"Jorge",
""
]
] | Starting from Ooguri's construction for $BF$ theory in three (and four) dimensions, we show how to construct a well defined theory with an infinite number of degrees of freedom. The spin network states that are kept invariant by the evolution operators of the theory are exact solutions of the Hamiltonian constraint of ... |
2404.09446 | Yuki Osawa | Yuki Osawa, Kuan-Nan Lin, Yasusada Nambu, Masahiro Hotta, and Pisin
Chen | The final burst of the moving mirror is unrelated to the partner mode of
analog Hawking radiation | 18 pages, 6 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Flying mirrors with appropriate trajectories have been recognized as an
analog system that mimics black hole Hawking evaporation and have been widely
investigated. It has recently been suggested that the partner mode of the
analog Hawking radiation emitted from a moving mirror would manifest itself
through a final bu... | [
{
"created": "Mon, 15 Apr 2024 04:17:57 GMT",
"version": "v1"
}
] | 2024-04-16 | [
[
"Osawa",
"Yuki",
""
],
[
"Lin",
"Kuan-Nan",
""
],
[
"Nambu",
"Yasusada",
""
],
[
"Hotta",
"Masahiro",
""
],
[
"Chen",
"Pisin",
""
]
] | Flying mirrors with appropriate trajectories have been recognized as an analog system that mimics black hole Hawking evaporation and have been widely investigated. It has recently been suggested that the partner mode of the analog Hawking radiation emitted from a moving mirror would manifest itself through a final burs... |
2207.01657 | Trupti Patil | Trupti Patil and Sukanta Panda | Coupled scalar field cosmology with effects of curvature | The published version in Eur. Phys. J. Plus | Eur. Phys. J. Plus (2023) 138:583 | 10.1140/epjp/s13360-023-04192-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present study, we investigate the interaction between dark energy and
dark matter, particularly emphasizing the effects of curvature in the realm of
Friedmann-Lemaitre-Robertson-Walker (FLRW) space-time. We examine the system by
forming a dynamic set of equations for various critical points. Later, we study
th... | [
{
"created": "Mon, 4 Jul 2022 18:13:17 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Mar 2023 12:49:27 GMT",
"version": "v2"
},
{
"created": "Thu, 6 Jul 2023 04:06:44 GMT",
"version": "v3"
}
] | 2023-07-07 | [
[
"Patil",
"Trupti",
""
],
[
"Panda",
"Sukanta",
""
]
] | In the present study, we investigate the interaction between dark energy and dark matter, particularly emphasizing the effects of curvature in the realm of Friedmann-Lemaitre-Robertson-Walker (FLRW) space-time. We examine the system by forming a dynamic set of equations for various critical points. Later, we study thei... |
gr-qc/0602055 | Yungui Gong | Yungui Gong and Anzhong Wang | Acceleration from M theory and Fine-tuning | 9 pages, 3 figures, use iopart, v2; references updated, accepted for
publication in Class. Quantum Grav | Class.Quant.Grav. 23 (2006) 3419-3426 | 10.1088/0264-9381/23/10/012 | null | gr-qc astro-ph hep-th | null | The compactification of M theory with time dependent hyperbolic internal
space gives an effective scalar field with exponential potential which provides
a transient acceleration in Einstein frame in four dimensions. Ordinary matter
and radiation are present in addition to the scalar field coming from
compactification... | [
{
"created": "Tue, 14 Feb 2006 20:30:53 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Apr 2006 22:45:12 GMT",
"version": "v2"
},
{
"created": "Wed, 12 Apr 2006 04:28:40 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Gong",
"Yungui",
""
],
[
"Wang",
"Anzhong",
""
]
] | The compactification of M theory with time dependent hyperbolic internal space gives an effective scalar field with exponential potential which provides a transient acceleration in Einstein frame in four dimensions. Ordinary matter and radiation are present in addition to the scalar field coming from compactification. ... |
gr-qc/0507080 | Gary T. Horowitz | Gary T. Horowitz | Higher Dimensional Generalizations of the Kerr Black Hole | 15 pages, to appear in "Kerr Spacetime: Rotating Black Holes", eds.
S. Scott, M. Visser, and D. Wiltshire (Cambridge University Press) | null | null | null | gr-qc hep-th | null | A brief introduction is given to rotating black holes in more than four
spacetime dimensions.
| [
{
"created": "Mon, 18 Jul 2005 23:45:53 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Horowitz",
"Gary T.",
""
]
] | A brief introduction is given to rotating black holes in more than four spacetime dimensions. |
1706.01773 | Gamal G.L. Nashed | A. M. Awad, S. Capozziello and G. G. L. Nashed | $D$-dimensional charged Anti-de-Sitter black holes in $f(T)$ gravity | 11 Pages, will appear in JHEP | JHEP 07 (2017) 136 | 10.1007/JHEP07(2017)136 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a $D$-dimensional charged Anti-de-Sitter black hole solutions in
$f(T)$ gravity, where $f(T)=T+\beta T^2$ and $D \geq 4$. These solutions are
characterized by flat or cylindrical horizons. The interesting feature of these
solutions is the existence of inseparable electric monopole and quadrupole
terms in t... | [
{
"created": "Sat, 3 Jun 2017 16:27:11 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Jul 2017 14:04:01 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Jul 2017 12:11:44 GMT",
"version": "v3"
}
] | 2017-08-01 | [
[
"Awad",
"A. M.",
""
],
[
"Capozziello",
"S.",
""
],
[
"Nashed",
"G. G. L.",
""
]
] | We present a $D$-dimensional charged Anti-de-Sitter black hole solutions in $f(T)$ gravity, where $f(T)=T+\beta T^2$ and $D \geq 4$. These solutions are characterized by flat or cylindrical horizons. The interesting feature of these solutions is the existence of inseparable electric monopole and quadrupole terms in the... |
2308.04939 | Adailton Ara\'ujo Filho | A. A. Ara\'ujo Filho | Implications of a Simpson-Visser solution in Verlinde's framework | 46 pages, 9 figures, and 9 tables -- accepted for publication in The
European physical Journal C | The European Physical Journal C, 84, 73, (2024) | 10.1140/epjc/s10052-023-12328-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This study focuses on investigating a regular black hole within the framework
of Verlinde's emergent gravity. In particular, we explore the main aspects of
the modified Simpson--Visser solution. Our analysis reveals the presence of a
unique physical event horizon under certain conditions. Moreover, we study the
therm... | [
{
"created": "Wed, 9 Aug 2023 13:14:33 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Dec 2023 19:18:00 GMT",
"version": "v2"
},
{
"created": "Fri, 15 Dec 2023 13:26:24 GMT",
"version": "v3"
}
] | 2024-01-24 | [
[
"Filho",
"A. A. Araújo",
""
]
] | This study focuses on investigating a regular black hole within the framework of Verlinde's emergent gravity. In particular, we explore the main aspects of the modified Simpson--Visser solution. Our analysis reveals the presence of a unique physical event horizon under certain conditions. Moreover, we study the thermod... |
gr-qc/0103093 | Toporenskij A. V. | A.V.Toporensky | The shear dynamics in Bianchi I cosmological model on the brane | 7 pages, no figures; some comments and references added; submitted to
Class. Quant. Gravity | Class.Quant.Grav. 18 (2001) 2311-2316 | 10.1088/0264-9381/18/12/306 | null | gr-qc hep-th | null | The shear dynamics in Bianchi I cosmological model on the brane with a
perfect fluid (the equation of state is $p=(\gamma-1) \mu$) is studied. It is
shown that for $1 < \gamma < 2$ the shear parameter has maximum at some moment
during a transition period from nonstandard to standard cosmology. An exact
formula for th... | [
{
"created": "Mon, 26 Mar 2001 14:55:42 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Apr 2001 14:33:20 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Toporensky",
"A. V.",
""
]
] | The shear dynamics in Bianchi I cosmological model on the brane with a perfect fluid (the equation of state is $p=(\gamma-1) \mu$) is studied. It is shown that for $1 < \gamma < 2$ the shear parameter has maximum at some moment during a transition period from nonstandard to standard cosmology. An exact formula for the ... |
gr-qc/9312006 | Jerzy Lewandowski | Robert Alicki, John R. Klauder and Jerzy Lewandowski | Landau Level Ground--State Degeneracy, and Its Relevance for a General
Quantization Procedure | 32, Phys. Rev. A, 48, 2538 | Phys.Rev. A48 (1993) 2538-2548 | 10.1103/PhysRevA.48.2538 | null | gr-qc hep-th | null | The quantum dynamics of a two-dimensional charged spin $1/2$ particle is
studied for general, symmetry--free curved surfaces and general, nonuniform
magnetic fields that are, when different from zero, orthogonal to the defining
two surface. Although higher Landau levels generally lose their degeneracy
under such gene... | [
{
"created": "Fri, 3 Dec 1993 01:45:33 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Alicki",
"Robert",
""
],
[
"Klauder",
"John R.",
""
],
[
"Lewandowski",
"Jerzy",
""
]
] | The quantum dynamics of a two-dimensional charged spin $1/2$ particle is studied for general, symmetry--free curved surfaces and general, nonuniform magnetic fields that are, when different from zero, orthogonal to the defining two surface. Although higher Landau levels generally lose their degeneracy under such genera... |
1104.5290 | Tetsuyuki Yukawa | Tetsuyuki Yukawa | Birth and Growth of Two-dimensional Universe | null | null | 10.1103/PhysRevD.85.023505 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A master equation for the evolution of two-dimensional universe is derived
based on the simplicial quantum gravity regarding the evolution as the Markov
process of a space-time lattice. Three typical phases, expanding, elongating
and collapsing phase, which have been found in the numerical simulation, are
studied tog... | [
{
"created": "Thu, 28 Apr 2011 03:58:35 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Nov 2011 04:58:14 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Yukawa",
"Tetsuyuki",
""
]
] | A master equation for the evolution of two-dimensional universe is derived based on the simplicial quantum gravity regarding the evolution as the Markov process of a space-time lattice. Three typical phases, expanding, elongating and collapsing phase, which have been found in the numerical simulation, are studied toget... |
2009.06705 | Pengzhang He | Peng-Zhang He, Qi-Qi Fan, Hao-Ran Zhang, and Jian-Bo Deng | Shadows of rotating Hayward-de Sitter black holes with astrometric
observables | 16 pages, 6 figures | null | 10.1140/epjc/s10052-020-08707-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by recent work on rotating black hole shadow [Phys. Rev. D101,
084029 (2020)], we investigate the shadow behaviors of rotating Hayward-de
Sitter black hole for static observers at a finite distance in terms of
astronomical observables. This paper uses the newly introduced distortion
parameter in [arXiv:2006... | [
{
"created": "Tue, 8 Sep 2020 22:03:55 GMT",
"version": "v1"
}
] | 2020-12-29 | [
[
"He",
"Peng-Zhang",
""
],
[
"Fan",
"Qi-Qi",
""
],
[
"Zhang",
"Hao-Ran",
""
],
[
"Deng",
"Jian-Bo",
""
]
] | Motivated by recent work on rotating black hole shadow [Phys. Rev. D101, 084029 (2020)], we investigate the shadow behaviors of rotating Hayward-de Sitter black hole for static observers at a finite distance in terms of astronomical observables. This paper uses the newly introduced distortion parameter in [arXiv:2006.0... |
2310.02315 | Andrew Robert Clifford Spiers A R C S | Andrew Spiers, Andrea Maselli, Thomas P. Sotiriou | Measuring scalar charge with compact binaries: High accuracy modelling
with self-force | 15 pages, 0 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Using the self-force approach, we present the premier first-post-adiabatic
accuracy formalism for modelling compact binaries in theories with a massless
scalar field non-minimally coupled to gravity. We limit the binary secondary to
being a non-spinning compact body with no scalar dipole (we will address the
spinning... | [
{
"created": "Tue, 3 Oct 2023 18:00:05 GMT",
"version": "v1"
}
] | 2023-10-05 | [
[
"Spiers",
"Andrew",
""
],
[
"Maselli",
"Andrea",
""
],
[
"Sotiriou",
"Thomas P.",
""
]
] | Using the self-force approach, we present the premier first-post-adiabatic accuracy formalism for modelling compact binaries in theories with a massless scalar field non-minimally coupled to gravity. We limit the binary secondary to being a non-spinning compact body with no scalar dipole (we will address the spinning a... |
gr-qc/9809026 | Adrian Kent | Adrian Kent | Quantum Histories | 19 pages, TeX with harvmac. Contribution to Proceedings of the 104th
Nobel Symposium, ``Modern Studies of Basic Quantum Concepts and Phenomena'',
Gimo, June 1997. To appear in Physica Scripta | Phys.Scripta T76 (1998) 78-84 | 10.1238/Physica.Topical.076a00078 | DAMTP-1997-117 | gr-qc hep-th quant-ph | null | There are good motivations for considering some type of quantum histories
formalism. Several possible formalisms are known, defined by different
definitions of event and by different selection criteria for sets of histories.
These formalisms have a natural interpretation, according to which nature
somehow chooses one... | [
{
"created": "Fri, 4 Sep 1998 21:33:01 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Kent",
"Adrian",
""
]
] | There are good motivations for considering some type of quantum histories formalism. Several possible formalisms are known, defined by different definitions of event and by different selection criteria for sets of histories. These formalisms have a natural interpretation, according to which nature somehow chooses one s... |
1305.2020 | Hyeong-Chan Kim | Inyong Cho, Hyeong-Chan Kim, and Taeyoon Moon | Precursor of Inflation | 6pages, 1figure | Phys. Rev. Lett 111, 071301 (2013) | 10.1103/PhysRevLett.111.071301 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate a nonsingular initial state of the Universe which leads to
inflation naturally. The model is described by a scalar field with a quadratic
potential in Eddington-inspired Born-Infeld gravity. The curvature of this
initial state is given by the mass scale of the scalar field which is much
smaller than th... | [
{
"created": "Thu, 9 May 2013 07:16:38 GMT",
"version": "v1"
}
] | 2013-08-26 | [
[
"Cho",
"Inyong",
""
],
[
"Kim",
"Hyeong-Chan",
""
],
[
"Moon",
"Taeyoon",
""
]
] | We investigate a nonsingular initial state of the Universe which leads to inflation naturally. The model is described by a scalar field with a quadratic potential in Eddington-inspired Born-Infeld gravity. The curvature of this initial state is given by the mass scale of the scalar field which is much smaller than the ... |
gr-qc/0010096 | Alexander I. Nesterov | Alexander I. Nesterov | Riemann normal coordinates, Fermi reference system and the geodesic
deviation equation | LATeX, 13 pages | Class.Quant.Grav. 16 (1999) 465-477 | 10.1088/0264-9381/16/2/011 | null | gr-qc | null | We obtain the integral formulae for computing the tetrads and metric
components in Riemann normal coordinates and Fermi coordinate system of an
observer in arbitrary motion. Our approach admits essential enlarging the range
of validity of these coordinates. The results obtained are applied to the
geodesic deviation i... | [
{
"created": "Thu, 26 Oct 2000 01:59:59 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Nesterov",
"Alexander I.",
""
]
] | We obtain the integral formulae for computing the tetrads and metric components in Riemann normal coordinates and Fermi coordinate system of an observer in arbitrary motion. Our approach admits essential enlarging the range of validity of these coordinates. The results obtained are applied to the geodesic deviation in ... |
1308.3642 | Michael T. Anderson | Michael T Anderson | Local existence and uniqueness for exterior static vacuum Einstein
metrics | 5 pages | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study solutions to the static vacuum Einstein equations on exterior
domains with prescribed metric and mean curvature on the inner boundary. It is
proved that for any such boundary data near the standard round boundary data in
Euclidean space, there exists a unique AF solution to the static vacuum
equations realiz... | [
{
"created": "Fri, 16 Aug 2013 14:43:06 GMT",
"version": "v1"
}
] | 2013-08-19 | [
[
"Anderson",
"Michael T",
""
]
] | We study solutions to the static vacuum Einstein equations on exterior domains with prescribed metric and mean curvature on the inner boundary. It is proved that for any such boundary data near the standard round boundary data in Euclidean space, there exists a unique AF solution to the static vacuum equations realizin... |
1101.4684 | Pablo Laguna | Tanja Bode, Tamara Bogdanovic, Roland Haas, James Healy, Pablo Laguna
and Deirdre Shoemaker | Mergers of Supermassive Black Holes in Astrophysical Environments | 9 pages, 5 figures, 1 table, replaced with version accepted for
publication in ApJ | null | 10.1088/0004-637X/744/1/45 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modeling the late inspiral and merger of supermassive black holes is central
to understanding accretion processes and the conditions under which
electromagnetic emission accompanies gravitational waves. We use fully general
relativistic, hydrodynamics simulations to investigate how electromagnetic
signatures correlat... | [
{
"created": "Mon, 24 Jan 2011 22:54:37 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Oct 2011 16:46:41 GMT",
"version": "v2"
}
] | 2015-05-27 | [
[
"Bode",
"Tanja",
""
],
[
"Bogdanovic",
"Tamara",
""
],
[
"Haas",
"Roland",
""
],
[
"Healy",
"James",
""
],
[
"Laguna",
"Pablo",
""
],
[
"Shoemaker",
"Deirdre",
""
]
] | Modeling the late inspiral and merger of supermassive black holes is central to understanding accretion processes and the conditions under which electromagnetic emission accompanies gravitational waves. We use fully general relativistic, hydrodynamics simulations to investigate how electromagnetic signatures correlate ... |
1901.02461 | Lorenzo Annulli | Lorenzo Annulli, Vitor Cardoso, Leonardo Gualtieri | Electromagnetism and hidden vector fields in modified gravity theories:
spontaneous and induced vectorization | 12 pages, RevTeX4. Matches published version | Phys. Rev. D 99, 044038 (2019) | 10.1103/PhysRevD.99.044038 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general relativity, Maxwell's equations are embedded in curved spacetime
through the minimal prescription, but this could change if strong-gravity
modifications are present. We show that with a nonminimal coupling between
gravity and a massless vector field, nonperturbative effects can arise in
compact stars. We f... | [
{
"created": "Tue, 8 Jan 2019 19:00:01 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Feb 2019 16:29:26 GMT",
"version": "v2"
}
] | 2019-02-27 | [
[
"Annulli",
"Lorenzo",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Gualtieri",
"Leonardo",
""
]
] | In general relativity, Maxwell's equations are embedded in curved spacetime through the minimal prescription, but this could change if strong-gravity modifications are present. We show that with a nonminimal coupling between gravity and a massless vector field, nonperturbative effects can arise in compact stars. We fin... |
2201.07596 | Artur Alho | Artur Alho, Woei Chet Lim, Claes Uggla | Cosmological global dynamical systems analysis | 15 pages, 5 figures | null | 10.1088/1361-6382/ac7769 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a dynamical systems formulation for models with an exponential
scalar field and matter with a linear equation of state in a spatially flat and
isotropic spacetime. In contrast to earlier work, which only considered linear
hyperbolic fixed point analysis, we do a center manifold analysis of the
non-hyperbo... | [
{
"created": "Wed, 19 Jan 2022 13:46:45 GMT",
"version": "v1"
}
] | 2022-07-13 | [
[
"Alho",
"Artur",
""
],
[
"Lim",
"Woei Chet",
""
],
[
"Uggla",
"Claes",
""
]
] | We consider a dynamical systems formulation for models with an exponential scalar field and matter with a linear equation of state in a spatially flat and isotropic spacetime. In contrast to earlier work, which only considered linear hyperbolic fixed point analysis, we do a center manifold analysis of the non-hyperboli... |
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