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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1703.02287 | Luca Fabbri | Luca Fabbri | Fundamental Theory of Torsion Gravity | adapted so to appear as Introduction to the Special Issue
"Torsion-Gravity and Spinors in Fundamental Theoretical Physics"
https://www.mdpi.com/journal/universe/special_issues/Torsion_Gravity | Universe 2021, 7, 305 | 10.3390/universe7080305 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we present the general differential geometry of a background in
which the space-time has both torsion and curvature with internal symmetries
being described by gauge fields, and that is equipped to couple spinorial
matter fields having spin and energy as well as gauge currents: torsion will
turn out to b... | [
{
"created": "Tue, 7 Mar 2017 09:16:15 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Feb 2018 15:47:38 GMT",
"version": "v2"
},
{
"created": "Wed, 24 Oct 2018 22:20:32 GMT",
"version": "v3"
},
{
"created": "Sat, 13 Mar 2021 17:04:15 GMT",
"version": "v4"
},
{
"cr... | 2022-04-20 | [
[
"Fabbri",
"Luca",
""
]
] | In this work we present the general differential geometry of a background in which the space-time has both torsion and curvature with internal symmetries being described by gauge fields, and that is equipped to couple spinorial matter fields having spin and energy as well as gauge currents: torsion will turn out to be ... |
2005.03926 | Jose Luis Hernandez-Pastora | J.L. Hernandez-Pastora | Connecting the exterior gravitational field with the energy momentum
tensor of axially symmetric compact objects | null | null | 10.1140/epjc/s10052-020-7970-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A method to construct interior axially symmetric metrics that appropriately
match with any vacuum solution of the Weyl family is developed in
Hernandez-Pastora etal. (Class Quantum Gravity 33:235005, 2016). It was
shown,for the case of some vacuum solutions, that the simplestsolution for the
interior metric leads to ... | [
{
"created": "Fri, 8 May 2020 09:41:36 GMT",
"version": "v1"
}
] | 2020-05-11 | [
[
"Hernandez-Pastora",
"J. L.",
""
]
] | A method to construct interior axially symmetric metrics that appropriately match with any vacuum solution of the Weyl family is developed in Hernandez-Pastora etal. (Class Quantum Gravity 33:235005, 2016). It was shown,for the case of some vacuum solutions, that the simplestsolution for the interior metric leads to so... |
gr-qc/0511040 | Andrzej Woszczyna | Zdzislaw A. Golda, Andrzej Woszczyna and Karolina Zawada | Canonical gauge-invariant variables for scalar perturbations in
synchronous coordinates | LaTeX, 9 pages | Acta Phys.Polon. B36 (2005) 2133-2141 | null | null | gr-qc | null | Under an appropriate change of the perturbation variable Lifshitz-Khalatnikov
propagation equations for the scalar perturbation reduce to d'Alembert
equation. The change of variables is based on the Darboux transform.
| [
{
"created": "Tue, 8 Nov 2005 11:33:33 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Golda",
"Zdzislaw A.",
""
],
[
"Woszczyna",
"Andrzej",
""
],
[
"Zawada",
"Karolina",
""
]
] | Under an appropriate change of the perturbation variable Lifshitz-Khalatnikov propagation equations for the scalar perturbation reduce to d'Alembert equation. The change of variables is based on the Darboux transform. |
gr-qc/0004033 | Alfonso F. Agnew | Alfonso F. Agnew and Tevian Dray | Distributional Modes for Scalar Field Quantization | 15 pages, RevTeX | Gen.Rel.Grav. 33 (2001) 429-453 | 10.1023/A:1010236506377 | MATH-SMU-00-06 | gr-qc | null | We propose a mode-sum formalism for the quantization of the scalar field
based on distributional modes, which are naturally associated with a slight
modification of the standard plane-wave modes. We show that this formalism
leads to the standard Rindler temperature result, and that these modes can be
canonically defi... | [
{
"created": "Tue, 11 Apr 2000 20:59:54 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Agnew",
"Alfonso F.",
""
],
[
"Dray",
"Tevian",
""
]
] | We propose a mode-sum formalism for the quantization of the scalar field based on distributional modes, which are naturally associated with a slight modification of the standard plane-wave modes. We show that this formalism leads to the standard Rindler temperature result, and that these modes can be canonically define... |
1909.09899 | Foad Parsaei | Foad Parsaei and Sara Rastgoo | Wormhole solutions with a polynomial equation-of-state and minimal
violation of the null energy condition | 12 pages, 13 figures | null | 10.1140/epjc/s10052-020-7932-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper discusses wormholes supported by general equation-of-state ,
resulting in a significant combination of the linear equation-of-state and some
other models. Wormhole with a quadratic equation-of-state is studied as a
particular example. It is shown that the violation of null energy condition is
restricted to... | [
{
"created": "Sat, 21 Sep 2019 21:22:11 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Mar 2020 20:41:26 GMT",
"version": "v2"
}
] | 2020-05-20 | [
[
"Parsaei",
"Foad",
""
],
[
"Rastgoo",
"Sara",
""
]
] | This paper discusses wormholes supported by general equation-of-state , resulting in a significant combination of the linear equation-of-state and some other models. Wormhole with a quadratic equation-of-state is studied as a particular example. It is shown that the violation of null energy condition is restricted to s... |
2005.05435 | Dra\v{z}en Glavan | Dra\v{z}en Glavan, Anja Marunovi\'c, Tomislav Prokopec, Zahra Zahraee | Abelian Higgs model in power-law inflation: the propagators in the
unitary gauge | 58 pages + appendices, 2 figures, 2 tables; published version | JHEP 09 (2020) 165 | 10.1007/JHEP09(2020)165 | CP3-20-03 | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Abelian Higgs model in the broken phase as a spectator in
cosmological spaces of general $D$ space-time dimensions, and allow for the
condensate to be time-dependent. We fix the unitary gauge using Dirac's
formalism for constrained systems, and then quantize the gauge-fixed system.
Vector and scalar p... | [
{
"created": "Mon, 11 May 2020 21:06:28 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Jun 2021 15:26:42 GMT",
"version": "v2"
}
] | 2024-07-30 | [
[
"Glavan",
"Dražen",
""
],
[
"Marunović",
"Anja",
""
],
[
"Prokopec",
"Tomislav",
""
],
[
"Zahraee",
"Zahra",
""
]
] | We consider the Abelian Higgs model in the broken phase as a spectator in cosmological spaces of general $D$ space-time dimensions, and allow for the condensate to be time-dependent. We fix the unitary gauge using Dirac's formalism for constrained systems, and then quantize the gauge-fixed system. Vector and scalar per... |
1306.3876 | Bert Schroer | Bert Schroer | Dark matter and Wigner's third positive-energy representation class | 15 Pages, more emphasis on differences of this new proposal (based on
Wigner's infinite spin "stuff") as compared to the two existing ones: i.e.
the use of WIMPS or other light or massless particles, and modifications of
gravitation at large distances | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The almost 7 decades lasting futile attempts to understand the possible
physical content of the third Wigner representation class (the infinite spin
class) came to a partial solution with the 2006 discovery of existence of
string-localized spacetime covariantizations . This has led to a still ongoing
vast generalizat... | [
{
"created": "Mon, 17 Jun 2013 14:33:15 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jul 2013 19:09:35 GMT",
"version": "v2"
},
{
"created": "Thu, 25 Jul 2013 11:38:05 GMT",
"version": "v3"
},
{
"created": "Sun, 10 Nov 2013 09:32:55 GMT",
"version": "v4"
},
{
"cr... | 2014-11-12 | [
[
"Schroer",
"Bert",
""
]
] | The almost 7 decades lasting futile attempts to understand the possible physical content of the third Wigner representation class (the infinite spin class) came to a partial solution with the 2006 discovery of existence of string-localized spacetime covariantizations . This has led to a still ongoing vast generalizatio... |
gr-qc/9908048 | Oliver Pooley | Harvey R. Brown (Oxford) and Oliver Pooley (Oxford) | The origin of the spacetime metric: Bell's `Lorentzian pedagogy' and its
significance in general relativity | To be published in ``Physics Meets Philosophy at the Planck Length'',
C. Callender and N. Huggett (eds.), Cambridge University Press (1999). 22
pages, no figures, LaTeX, uses harvard.sty; 3 references added, typos
corrected and minor changes to content | null | null | null | gr-qc | null | The purpose of this paper is to evaluate the `Lorentzian pedagogy' defended
by J.S. Bell in his essay ``How to teach special relativity'', and to explore
its consistency with Einstein's thinking from 1905 to 1952. Some remarks are
also made in this context on Weyl's philosophy of relativity and his 1918 gauge
theory.... | [
{
"created": "Tue, 17 Aug 1999 14:10:30 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Oct 1999 16:49:04 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Brown",
"Harvey R.",
"",
"Oxford"
],
[
"Pooley",
"Oliver",
"",
"Oxford"
]
] | The purpose of this paper is to evaluate the `Lorentzian pedagogy' defended by J.S. Bell in his essay ``How to teach special relativity'', and to explore its consistency with Einstein's thinking from 1905 to 1952. Some remarks are also made in this context on Weyl's philosophy of relativity and his 1918 gauge theory. F... |
gr-qc/9312015 | null | C. Kiefer | The semiclassical approximation to quantum gravity | LATEX, 47 pages, report Freiburg THEP-93/27, to appear in ``Canonical
gravity -- from classical to quantum", edited by J. Ehlers and H. Friedrich
(Springer, Berlin, 1994) | null | 10.1007/3-540-58339-4_19 | null | gr-qc astro-ph hep-th | null | A detailed review is given of the semiclassical approximation to quantum
gravity in the canonical framework. This includes in particular the derivation
of the functional Schr\"odinger equation and a discussion of semiclassical time
as well as the derivation of quantum gravitational correction terms to the
Schr\"oding... | [
{
"created": "Thu, 9 Dec 1993 09:18:51 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Kiefer",
"C.",
""
]
] | A detailed review is given of the semiclassical approximation to quantum gravity in the canonical framework. This includes in particular the derivation of the functional Schr\"odinger equation and a discussion of semiclassical time as well as the derivation of quantum gravitational correction terms to the Schr\"odinger... |
1107.2730 | Zou De Cheng | Kang Zhou, Zhan-Ying Yang, De-Cheng Zou and Rui-Hong Yue | Spherically symmetric gravitational collapse of a dust cloud in third
order Lovelock Gravity | 22 pages, 4 figures and accepted by Int. J. Mod. Phys. A | Int. J. Mod. Phys. D,2011 V22(12): 2317-2335 | 10.1142/S0218271811020408 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the spherically symmetric gravitational collapse of an
incoherent dust cloud by considering a LTB type space-time in third order
Lovelock Gravity without cosmological constant, and give three families of
LTB-like solutions which separately corresponding to hyperbolic, parabolic and
elliptic. Notice tha... | [
{
"created": "Thu, 14 Jul 2011 05:36:21 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Zhou",
"Kang",
""
],
[
"Yang",
"Zhan-Ying",
""
],
[
"Zou",
"De-Cheng",
""
],
[
"Yue",
"Rui-Hong",
""
]
] | We investigate the spherically symmetric gravitational collapse of an incoherent dust cloud by considering a LTB type space-time in third order Lovelock Gravity without cosmological constant, and give three families of LTB-like solutions which separately corresponding to hyperbolic, parabolic and elliptic. Notice that ... |
gr-qc/0507008 | Peter Kuhfittig K.F. | Peter K.F. Kuhfittig | Cylindrically symmetric wormholes | Supplied missing figures; 15 pages AMSTeX | Phys.Rev. D71 (2005) 104007 | 10.1103/PhysRevD.71.104007 | null | gr-qc | null | This paper discusses traversable wormholes that differ slightly but
significantly from those of the Morris-Thorne type under the assumption of
cylindrical symmetry. The throat is a piecewise smooth cylindrical surface
resulting in a shape function that is not differentiable at some value. It is
proposed that the regu... | [
{
"created": "Sat, 2 Jul 2005 14:09:12 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Sep 2005 20:04:29 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | This paper discusses traversable wormholes that differ slightly but significantly from those of the Morris-Thorne type under the assumption of cylindrical symmetry. The throat is a piecewise smooth cylindrical surface resulting in a shape function that is not differentiable at some value. It is proposed that the regula... |
0807.0679 | Kohkichi Konno | Kohkichi Konno, Toyoki Matsuyama, Yasuhiro Asano, Satoshi Tanda | Flat rotation curves in Chern-Simons modified gravity | 4 pages, Accepted for publication in Phys. Rev. D | Phys.Rev.D78:024037,2008 | 10.1103/PhysRevD.78.024037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the spacetime of a slowly rotating black hole in the
Chern-Simons modified gravity. The long range feature of frame-dragging effect
under the Chern-Simon gravity well explains the flat rotation curves of
galaxies which is a central evidence of dark matter. Our solution provides a
different scenario of ... | [
{
"created": "Fri, 4 Jul 2008 05:32:28 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Konno",
"Kohkichi",
""
],
[
"Matsuyama",
"Toyoki",
""
],
[
"Asano",
"Yasuhiro",
""
],
[
"Tanda",
"Satoshi",
""
]
] | We investigate the spacetime of a slowly rotating black hole in the Chern-Simons modified gravity. The long range feature of frame-dragging effect under the Chern-Simon gravity well explains the flat rotation curves of galaxies which is a central evidence of dark matter. Our solution provides a different scenario of ro... |
2203.10341 | Yu-Peng Zhang | Yu-Peng Zhang, Yong-Qiang Wang, Shao-Wen Wei, Yu-Xiao Liu | Dynamics of scalar hair with self-interactions around a Schwarzchild
black hole | 11 pages, 7 figures | Phys. Rev. D 106, 024027 (2022) | 10.1103/PhysRevD.106.024027 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the dynamics of scalar hair around a Schwarzchild
black hole. The scalar hair is sourced by the Gauss-Bonnet invariant with a
linear coupling. We work perturbatively in the coupling constant and ignore the
back-reaction of the scalar hair and the Gauss-Bonnet invariant. We evolve the
scalar fi... | [
{
"created": "Sat, 19 Mar 2022 15:21:33 GMT",
"version": "v1"
},
{
"created": "Sun, 31 Jul 2022 02:58:08 GMT",
"version": "v2"
}
] | 2022-08-02 | [
[
"Zhang",
"Yu-Peng",
""
],
[
"Wang",
"Yong-Qiang",
""
],
[
"Wei",
"Shao-Wen",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | In this paper, we study the dynamics of scalar hair around a Schwarzchild black hole. The scalar hair is sourced by the Gauss-Bonnet invariant with a linear coupling. We work perturbatively in the coupling constant and ignore the back-reaction of the scalar hair and the Gauss-Bonnet invariant. We evolve the scalar fiel... |
gr-qc/0103111 | Juergen Schmidt | Juergen Schmidt and Christopher Kohler | Torsion Degrees of Freedom in the Regge Calculus as Dislocations on the
Simplicial Lattice | null | Gen.Rel.Grav. 33 (2001) 1799-1808 | 10.1023/A:1013031402382 | null | gr-qc | null | Using the notion of a general conical defect, the Regge Calculus is
generalized by allowing for dislocations on the simplicial lattice in addition
to the usual disclinations. Since disclinations and dislocations correspond to
curvature and torsion singularities, respectively, the method we propose
provides a natural ... | [
{
"created": "Thu, 29 Mar 2001 13:23:55 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Schmidt",
"Juergen",
""
],
[
"Kohler",
"Christopher",
""
]
] | Using the notion of a general conical defect, the Regge Calculus is generalized by allowing for dislocations on the simplicial lattice in addition to the usual disclinations. Since disclinations and dislocations correspond to curvature and torsion singularities, respectively, the method we propose provides a natural wa... |
gr-qc/0302114 | Reinhard Meinel | R. Meinel and G. Neugebauer | Asymptotically flat solutions to the Ernst equation with reflection
symmetry | 5 pages, published in 1995 [Class. Quantum Grav. 12 (1995) 2045] | Class.Quant.Grav.12:2045,1995 | 10.1088/0264-9381/12/8/019 | null | gr-qc | null | It is shown that the class of asymptotically flat solutions to the
axisymmetric and stationary vacuum Einstein equations with reflection symmetry
of the metric is uniquely characterized by a simple relation for the Ernst
potential on the upper part of the symmetry axis. This result generalizes a
well-known fact from ... | [
{
"created": "Thu, 27 Feb 2003 09:57:38 GMT",
"version": "v1"
}
] | 2010-12-23 | [
[
"Meinel",
"R.",
""
],
[
"Neugebauer",
"G.",
""
]
] | It is shown that the class of asymptotically flat solutions to the axisymmetric and stationary vacuum Einstein equations with reflection symmetry of the metric is uniquely characterized by a simple relation for the Ernst potential on the upper part of the symmetry axis. This result generalizes a well-known fact from po... |
2008.02135 | Paul Kinsler | Jonathan Gratus, Paul Kinsler, Martin W. McCall | Temporary Singularities and Axions: an analytic solution that challenges
charge conservation | 15 pages, 19 figures | Ann. der Phys. 533, 2000565 (2021) | 10.1002/andp.202000565 | null | gr-qc physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct an analytic solution to Maxwell's equations that violates global
charge conservation, by building on the possibilities demonstrated in
[Foundations of Physics 49, 330 (2019)]. The construction is valid for a
spacetime containing a temporary singularity and a Maxwellian electrodynamics
containing a propos... | [
{
"created": "Wed, 5 Aug 2020 13:40:51 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Nov 2020 18:34:18 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Jul 2021 16:50:35 GMT",
"version": "v3"
},
{
"created": "Wed, 16 Mar 2022 18:20:21 GMT",
"version": "v4"
}
] | 2022-03-18 | [
[
"Gratus",
"Jonathan",
""
],
[
"Kinsler",
"Paul",
""
],
[
"McCall",
"Martin W.",
""
]
] | We construct an analytic solution to Maxwell's equations that violates global charge conservation, by building on the possibilities demonstrated in [Foundations of Physics 49, 330 (2019)]. The construction is valid for a spacetime containing a temporary singularity and a Maxwellian electrodynamics containing a proposed... |
1701.00395 | Peng Wang | Bochen Lv, Peng Wang, Haitang Yang | WKB Approximation for a Deformed Schrodinger-like Equation and its
Applications to Quasinormal Modes of Black Holes and Quantum Cosmology | references added | null | null | CTP-SCU/2017002 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we use the WKB approximation method to approximately solve a
deformed Schrodinger-like differential equation: $\left[ -\hbar^{2}
\partial_{\xi}^{2}g^{2}\left( -i\hbar\alpha\partial_{\xi}\right) -p^{2}\left(
\xi\right) \right] \psi\left( \xi\right) =0$, which are frequently dealt with
in various effecti... | [
{
"created": "Mon, 2 Jan 2017 14:10:47 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Jan 2017 15:20:32 GMT",
"version": "v2"
}
] | 2017-01-19 | [
[
"Lv",
"Bochen",
""
],
[
"Wang",
"Peng",
""
],
[
"Yang",
"Haitang",
""
]
] | In this paper, we use the WKB approximation method to approximately solve a deformed Schrodinger-like differential equation: $\left[ -\hbar^{2} \partial_{\xi}^{2}g^{2}\left( -i\hbar\alpha\partial_{\xi}\right) -p^{2}\left( \xi\right) \right] \psi\left( \xi\right) =0$, which are frequently dealt with in various effective... |
gr-qc/0411123 | David Ian Jones | D I Jones | Bounding the mass of the graviton using eccentric binaries | 4 figures, 2 tables. To appear in Astrophysical Journal Letters | Astrophys.J.618:L115-L118,2004 | 10.1086/427773 | null | gr-qc astro-ph | null | We describe a method by which gravitational wave observations of eccentric
binary systems could be used to test General Relativity's prediction that
gravitational waves are dispersionless. We present our results in terms of the
graviton having a non-zero rest mass, or equivalently a non-infinite Compton
wavelength. W... | [
{
"created": "Thu, 25 Nov 2004 18:12:02 GMT",
"version": "v1"
}
] | 2011-05-23 | [
[
"Jones",
"D I",
""
]
] | We describe a method by which gravitational wave observations of eccentric binary systems could be used to test General Relativity's prediction that gravitational waves are dispersionless. We present our results in terms of the graviton having a non-zero rest mass, or equivalently a non-infinite Compton wavelength. We ... |
2104.11344 | Robie Hennigar | Daniel Pook-Kolb, Ivan Booth, Robie A. Hennigar | Ultimate fate of apparent horizons during a binary black hole merger II:
Horizons weaving back and forth in time | 23 pages, 23 figures | null | 10.1103/PhysRevD.104.084084 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this second part of a two-part paper, we discuss numerical simulations of
a head-on merger of two non-spinning black holes. We resolve the fate of the
original two apparent horizons by showing that after intersecting, their world
tubes "turn around" and continue backwards in time. Using the method presented
in the... | [
{
"created": "Thu, 22 Apr 2021 22:57:22 GMT",
"version": "v1"
}
] | 2021-11-03 | [
[
"Pook-Kolb",
"Daniel",
""
],
[
"Booth",
"Ivan",
""
],
[
"Hennigar",
"Robie A.",
""
]
] | In this second part of a two-part paper, we discuss numerical simulations of a head-on merger of two non-spinning black holes. We resolve the fate of the original two apparent horizons by showing that after intersecting, their world tubes "turn around" and continue backwards in time. Using the method presented in the f... |
0906.0689 | Chul-Moon Yoo | Chul-moon Yoo, Hideki Ishihara, Masashi Kimura and Sugure Tanzawa | Hoop Conjecture and the Horizon Formation Cross-Section in Kaluza-Klein
Spacetimes | 25 pages, 7 figures, PRD accepted version | Phys.Rev.D81:024020,2010 | 10.1103/PhysRevD.81.024020 | APCTP-Pre2009-004, OCU-PHYS-311, AP-GR-65, YITP-09-33 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze momentarily static initial data sets of the gravitational field
produced by two-point sources in five-dimensional Kaluza-Klein spacetimes.
These initial data sets are characterized by the mass, the separation of
sources and the size of a extra dimension. Using these initial data sets, we
discuss the condit... | [
{
"created": "Wed, 3 Jun 2009 11:45:52 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jun 2009 04:35:10 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Jan 2010 07:13:07 GMT",
"version": "v3"
}
] | 2013-05-29 | [
[
"Yoo",
"Chul-moon",
""
],
[
"Ishihara",
"Hideki",
""
],
[
"Kimura",
"Masashi",
""
],
[
"Tanzawa",
"Sugure",
""
]
] | We analyze momentarily static initial data sets of the gravitational field produced by two-point sources in five-dimensional Kaluza-Klein spacetimes. These initial data sets are characterized by the mass, the separation of sources and the size of a extra dimension. Using these initial data sets, we discuss the conditio... |
2206.10759 | Yuri Bonder | Yuri Bonder | On the Hamiltonian of gravity theories whose action is linear in
spacetime curvature | Presented at the Ninth Meeting on CPT and Lorentz Symmetry,
Bloomington, Indiana, May 17-26, 2022. 4 short pages | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by/4.0/ | A straightforward method to compute Hamilton's density for theories that are
linear in the spacetime curvature is provided. It is shown that the lapse
function and shift vector still give rise to primary constraints, while the
induced metric gives rise to nontrivial evolution equations. The corresponding
Hamilton's d... | [
{
"created": "Tue, 21 Jun 2022 22:42:50 GMT",
"version": "v1"
}
] | 2022-06-23 | [
[
"Bonder",
"Yuri",
""
]
] | A straightforward method to compute Hamilton's density for theories that are linear in the spacetime curvature is provided. It is shown that the lapse function and shift vector still give rise to primary constraints, while the induced metric gives rise to nontrivial evolution equations. The corresponding Hamilton's den... |
2001.06148 | Jibril Ben Achour | Jibril Ben Achour, Suddhasattwa Brahma, Jean-Philippe Uzan | Bouncing compact objects I: Quantum extension of the Oppenheimer-Snyder
collapse | 20 pages, Published in JCAP | null | 10.1088/1475-7516/2020/03/041 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article proposes a generalization of the Oppenheimer-Snyder model which
describes a bouncing compact object. The corrections responsible for the bounce
are parameterized in a general way so as to remain agnostic about the specific
mechanism of singularity resolution at play. It thus develops an effective
theory ... | [
{
"created": "Fri, 17 Jan 2020 03:45:37 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Feb 2020 08:15:20 GMT",
"version": "v2"
},
{
"created": "Wed, 26 Feb 2020 02:14:22 GMT",
"version": "v3"
},
{
"created": "Mon, 27 Apr 2020 14:21:57 GMT",
"version": "v4"
}
] | 2020-04-28 | [
[
"Achour",
"Jibril Ben",
""
],
[
"Brahma",
"Suddhasattwa",
""
],
[
"Uzan",
"Jean-Philippe",
""
]
] | This article proposes a generalization of the Oppenheimer-Snyder model which describes a bouncing compact object. The corrections responsible for the bounce are parameterized in a general way so as to remain agnostic about the specific mechanism of singularity resolution at play. It thus develops an effective theory ba... |
gr-qc/0302017 | Kesh Govinder | K S Govinder and M Govender | Gravitational Collapse of Null Radiation and a String fluid | RevTeX 4.0 (8 pages - no figures). submitted to Phys Rev D. Some
changes to abstract, introduction and conclusion - references updated | Phys.Rev. D68 (2003) 024034 | 10.1103/PhysRevD.68.024034 | null | gr-qc | null | We consider the end state of collapsing null radiation with a string fluid.
It is shown that, if diffusive transport is assumed for the string, that a
naked singularity can form (at least locally). The model has the advantage of
not being asymptotically flat. We also analyse the case of a radiation-string
two-fluid a... | [
{
"created": "Thu, 6 Feb 2003 11:18:04 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Apr 2003 09:48:38 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Govinder",
"K S",
""
],
[
"Govender",
"M",
""
]
] | We consider the end state of collapsing null radiation with a string fluid. It is shown that, if diffusive transport is assumed for the string, that a naked singularity can form (at least locally). The model has the advantage of not being asymptotically flat. We also analyse the case of a radiation-string two-fluid and... |
gr-qc/0005082 | Robert Mann | R.B. Mann, D. Robbins, T. Ohta, and M.R. Trott | Exact Solutions to the Motion of Two Charged Particles in Lineal Gravity | Latex, 80 pages, 42 figures | Nucl.Phys.B590:367-426,2000 | 10.1016/S0550-3213(00)00537-X | WATPHYS-TH00/03 | gr-qc | null | We extend the canonical formalism for the motion of $N$-particles in lineal
gravity to include charges. Under suitable coordinate conditions and boundary
conditions the determining equation of the Hamiltonian (a kind of
transcendental equation) is derived from the matching conditions for the
dilaton field at the part... | [
{
"created": "Thu, 18 May 2000 14:59:07 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Mann",
"R. B.",
""
],
[
"Robbins",
"D.",
""
],
[
"Ohta",
"T.",
""
],
[
"Trott",
"M. R.",
""
]
] | We extend the canonical formalism for the motion of $N$-particles in lineal gravity to include charges. Under suitable coordinate conditions and boundary conditions the determining equation of the Hamiltonian (a kind of transcendental equation) is derived from the matching conditions for the dilaton field at the partic... |
1610.03881 | Yaghoub Heydarzade | Y. Heydarzade, H. Moradpour, F. Darabi | Black Hole Solutions in Rastall Theory | 4 pages | Can.J.Phys. 2017, 95(12): 1253-1256 | 10.1139/cjp-2017-0254 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Reissner-Nordstr\"om black hole solution in a generic cosmological
constant background in the the context of Rastall gravity is obtained. It is
shown that the cosmological constant arises naturally from the consistency of
the non-vacuum field equations of the Rastall theory for a spherical symmetric
spacetime, ra... | [
{
"created": "Wed, 12 Oct 2016 21:06:32 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Oct 2016 12:33:08 GMT",
"version": "v2"
}
] | 2017-12-05 | [
[
"Heydarzade",
"Y.",
""
],
[
"Moradpour",
"H.",
""
],
[
"Darabi",
"F.",
""
]
] | The Reissner-Nordstr\"om black hole solution in a generic cosmological constant background in the the context of Rastall gravity is obtained. It is shown that the cosmological constant arises naturally from the consistency of the non-vacuum field equations of the Rastall theory for a spherical symmetric spacetime, rath... |
2112.00959 | Richard Woodard | D. Glavan (CEICO) S. P. Miao (NCKU), T. Prokopec (Utrecht) and R. P.
Woodard (Florida) | Large Logarithms from Quantum Gravitational Corrections to a Massless,
Minimally Coupled Scalar on de Sitter | 26 pages, 2 figures, uses LaTeX2e, Version 2 revised slightly for
publication | JHEP 03 (2022) 088 | 10.1007/JHEP03(2022)088 | UFIFT-QG-21-05 | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider single graviton loop corrections to the effective field equation
of a massless, minimally coupled scalar on de Sitter background in the simplest
gauge. We find a large temporal logarithm in the approach to freeze-in at late
times, but no correction to the feeze-in amplitude. We also find a large
spatial l... | [
{
"created": "Thu, 2 Dec 2021 03:30:54 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Mar 2022 10:01:47 GMT",
"version": "v2"
}
] | 2022-03-16 | [
[
"Glavan",
"D.",
"",
"CEICO"
],
[
"Miao",
"S. P.",
"",
"NCKU"
],
[
"Prokopec",
"T.",
"",
"Utrecht"
],
[
"Woodard",
"R. P.",
"",
"Florida"
]
] | We consider single graviton loop corrections to the effective field equation of a massless, minimally coupled scalar on de Sitter background in the simplest gauge. We find a large temporal logarithm in the approach to freeze-in at late times, but no correction to the feeze-in amplitude. We also find a large spatial log... |
1410.8866 | Benjamin Lackey | Benjamin D. Lackey, Leslie Wade | Reconstructing the neutron-star equation of state with
gravitational-wave detectors from a realistic population of inspiralling
binary neutron stars | 21 pages, 12 figures, submitted to Phys. Rev. D | Phys. Rev. D 91, 043002 (2015) | 10.1103/PhysRevD.91.043002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave observations of inspiralling binary neutron star systems
can be used to measure the neutron-star equation of state (EOS) through the
tidally induced shift in the waveform phase that depends on the tidal
deformability parameter $\lambda$. Previous work has shown that $\lambda$, a
function of the neu... | [
{
"created": "Fri, 31 Oct 2014 19:53:25 GMT",
"version": "v1"
}
] | 2015-03-05 | [
[
"Lackey",
"Benjamin D.",
""
],
[
"Wade",
"Leslie",
""
]
] | Gravitational-wave observations of inspiralling binary neutron star systems can be used to measure the neutron-star equation of state (EOS) through the tidally induced shift in the waveform phase that depends on the tidal deformability parameter $\lambda$. Previous work has shown that $\lambda$, a function of the neutr... |
1402.0053 | Vivien Raymond | V. Raymond and W.M. Farr | Physically motivated exploration of the extrinsic parameter space in
ground-based gravitational-wave astronomy | 11 pages, 3 figures | null | null | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Efficient parameter estimation is critical for Gravitational-Wave astronomy.
In the case of compact binary coalescence, the high dimensional parameter space
demands efficient sampling techniques - such as Markov chain Monte Carlo
(MCMC). A number of degeneracies effectively reduce the dimensionality of the
parameter ... | [
{
"created": "Sat, 1 Feb 2014 05:35:56 GMT",
"version": "v1"
}
] | 2014-02-04 | [
[
"Raymond",
"V.",
""
],
[
"Farr",
"W. M.",
""
]
] | Efficient parameter estimation is critical for Gravitational-Wave astronomy. In the case of compact binary coalescence, the high dimensional parameter space demands efficient sampling techniques - such as Markov chain Monte Carlo (MCMC). A number of degeneracies effectively reduce the dimensionality of the parameter sp... |
gr-qc/0103006 | Gianluca Gemme | Ph. Bernard, G. Gemme, R. Parodi and E. Picasso | A detector of small harmonic displacements based on two coupled
microwave cavities | 28 pages, 12 eps figures, ReVteX. \tightenlines command added to
reduce number of pages. The following article has been accepted by Review of
Scientific Instruments. After it is published, it will be found at
http://link.aip.org/link/?rsi | Rev.Sci.Instrum. 72 (2001) 2428-2437 | 10.1063/1.1366636 | null | gr-qc physics.ins-det | null | The design and test of a detector of small harmonic displacements is
presented. The detector is based on the principle of the parametric conversion
of power between the resonant modes of two superconducting coupled microwave
cavities. The work is based on the original ideas of Bernard, Pegoraro, Picasso
and Radicati,... | [
{
"created": "Fri, 2 Mar 2001 14:30:27 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Mar 2001 09:20:39 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Bernard",
"Ph.",
""
],
[
"Gemme",
"G.",
""
],
[
"Parodi",
"R.",
""
],
[
"Picasso",
"E.",
""
]
] | The design and test of a detector of small harmonic displacements is presented. The detector is based on the principle of the parametric conversion of power between the resonant modes of two superconducting coupled microwave cavities. The work is based on the original ideas of Bernard, Pegoraro, Picasso and Radicati, w... |
2111.15596 | Nicola Tamanini | Jean-Baptiste Bayle, B\'eatrice Bonga, Daniela Doneva, Tanja Hinderer,
Archisman Ghosh, Nikolaos Karnesis, Mikhail Korobko, Valeriya Korol, Elisa
Maggio, Martina Muratore, Arianna I. Renzini, Angelo Ricciardone, Sweta Shah,
Golam Shaifullah, Lijing Shao, Lorenzo Speri, Nicola Tamanini, David Weir | Legacy of the First Workshop on Gravitational Wave Astrophysics for
Early Career Scientists | 60 pages, 12 figures; Legacy document of the Workshop on
Gravitational Wave Astrophysics for Early Career Scientists (GW{\AE}CS),
Lorentz Center Workshop, online, 3-7 May 2021 | null | null | null | gr-qc astro-ph.CO astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Gravitational wave science is a dynamical, fast-expanding research field
founded on results, tools and methodologies drawn from different research areas
and communities. Early career scientists entering this field must learn and
combine knowledge and techniques from a range of disciplines. The Workshop on
Gravitation... | [
{
"created": "Tue, 30 Nov 2021 17:43:10 GMT",
"version": "v1"
}
] | 2021-12-01 | [
[
"Bayle",
"Jean-Baptiste",
""
],
[
"Bonga",
"Béatrice",
""
],
[
"Doneva",
"Daniela",
""
],
[
"Hinderer",
"Tanja",
""
],
[
"Ghosh",
"Archisman",
""
],
[
"Karnesis",
"Nikolaos",
""
],
[
"Korobko",
"Mikhail",
"... | Gravitational wave science is a dynamical, fast-expanding research field founded on results, tools and methodologies drawn from different research areas and communities. Early career scientists entering this field must learn and combine knowledge and techniques from a range of disciplines. The Workshop on Gravitational... |
1504.06756 | Ilya Lvovich Shapiro | Sebastiao Mauro, Roberto Balbinot, Alessandro Fabbri, and Ilya L.
Shapiro | Fourth derivative gravity in the auxiliary fields representation and
application to the black hole stability | 11 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an auxiliary fields formulation for the general fourth-order
gravity on an arbitrary curved background. The case of a Ricci-flat background
is elaborated in full details and it is shown that there is an equivalence with
the standard metric formulation. At the same time, using auxiliary fields helps
to mak... | [
{
"created": "Sat, 25 Apr 2015 19:46:59 GMT",
"version": "v1"
}
] | 2015-04-28 | [
[
"Mauro",
"Sebastiao",
""
],
[
"Balbinot",
"Roberto",
""
],
[
"Fabbri",
"Alessandro",
""
],
[
"Shapiro",
"Ilya L.",
""
]
] | We consider an auxiliary fields formulation for the general fourth-order gravity on an arbitrary curved background. The case of a Ricci-flat background is elaborated in full details and it is shown that there is an equivalence with the standard metric formulation. At the same time, using auxiliary fields helps to make ... |
1907.09228 | Subhajit Barman | Subhajit Barman | The Hawking effect and the bounds on greybody factor for higher
dimensional Schwarzschild black holes | 13 pages, 7 figures, revtex4 | null | 10.1140/epjc/s10052-020-7613-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we have considered a $n-$dimensional Schwarzschild-Tangherlini
black hole spacetime with massless minimally coupled free scalar fields in its
bulk and $3-$brane. The bulk scalar field equation is separable using the
higher dimensional spherical harmonics on $(n-2)-$sphere. First, using the
Hamiltonian f... | [
{
"created": "Mon, 22 Jul 2019 11:02:23 GMT",
"version": "v1"
}
] | 2020-02-19 | [
[
"Barman",
"Subhajit",
""
]
] | In this work, we have considered a $n-$dimensional Schwarzschild-Tangherlini black hole spacetime with massless minimally coupled free scalar fields in its bulk and $3-$brane. The bulk scalar field equation is separable using the higher dimensional spherical harmonics on $(n-2)-$sphere. First, using the Hamiltonian for... |
2007.09078 | Jian-Pin Wu | Hang Liu, Peng Liu, Yunqi Liu, Bin Wang and Jian-Pin Wu | Echoes from phantom wormholes | 35 pages, 11 figures | Phys. Rev. D 103, 024006 (2021) | 10.1103/PhysRevD.103.024006 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the time evolution of the test scalar and electromagnetic fields
perturbations in configurations of phantom wormholes surrounded by dark energy
with state parameter $\omega< -1$. We observe obvious signals of echoes
reflecting wormholes properties and disclose the physical reasons behind such
phenomena. In p... | [
{
"created": "Fri, 17 Jul 2020 16:00:39 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Nov 2020 14:59:06 GMT",
"version": "v2"
}
] | 2021-01-13 | [
[
"Liu",
"Hang",
""
],
[
"Liu",
"Peng",
""
],
[
"Liu",
"Yunqi",
""
],
[
"Wang",
"Bin",
""
],
[
"Wu",
"Jian-Pin",
""
]
] | We study the time evolution of the test scalar and electromagnetic fields perturbations in configurations of phantom wormholes surrounded by dark energy with state parameter $\omega< -1$. We observe obvious signals of echoes reflecting wormholes properties and disclose the physical reasons behind such phenomena. In par... |
1803.01483 | Achim Kempf | Achim Kempf | Quantum gravity, information theory and the CMB | Based on an invited presentation at the Lemaitre Workshop (9-12 May
2017, Vatican Observatory) | null | 10.1007/s10701-018-0163-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review connections between the metric of spacetime and the quantum
fluctuations of fields. In particular, we discuss the finding that the
spacetime metric can be expressed entirely in terms of the 2-point correlators
of the fluctuations of quantum fields. We also discuss the open question
whether the knowledge of ... | [
{
"created": "Mon, 5 Mar 2018 03:41:39 GMT",
"version": "v1"
}
] | 2018-05-09 | [
[
"Kempf",
"Achim",
""
]
] | We review connections between the metric of spacetime and the quantum fluctuations of fields. In particular, we discuss the finding that the spacetime metric can be expressed entirely in terms of the 2-point correlators of the fluctuations of quantum fields. We also discuss the open question whether the knowledge of on... |
1902.01671 | Walid Chaibi | Stefan Ast, Sibilla Di Pace, Jacques Millo, Mikhael Pichot, Margherita
Turconi and Walid Chaibi | Generation of very high-order high purity Gaussian modes via spatial
light modulation | 9 pages, 8 figures | Phys. Rev. D 103, 042008 (2021) | 10.1103/PhysRevD.103.042008 | null | gr-qc physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We experimentally demonstrate the conversion of a fundamental
$\text{TEM}_{00}$ laser mode at 1064\,nm to higher order Hermite-Gaussian modes
(HG) of arbitrary order via a commercially available liquid crystal Spatial
Light Modulator (SLM). We particularly studied the
$\text{HG}_{5,5}/\text{HG}_{10,10}/\text{HG}_{15,... | [
{
"created": "Tue, 5 Feb 2019 13:39:27 GMT",
"version": "v1"
}
] | 2021-02-24 | [
[
"Ast",
"Stefan",
""
],
[
"Di Pace",
"Sibilla",
""
],
[
"Millo",
"Jacques",
""
],
[
"Pichot",
"Mikhael",
""
],
[
"Turconi",
"Margherita",
""
],
[
"Chaibi",
"Walid",
""
]
] | We experimentally demonstrate the conversion of a fundamental $\text{TEM}_{00}$ laser mode at 1064\,nm to higher order Hermite-Gaussian modes (HG) of arbitrary order via a commercially available liquid crystal Spatial Light Modulator (SLM). We particularly studied the $\text{HG}_{5,5}/\text{HG}_{10,10}/\text{HG}_{15,15... |
2112.02386 | Liu Zhao | Zeyuan Gao and Liu Zhao | Restricted phase space thermodynamics for AdS black holes via holography | 19 pages, 5 figures. Version to appear in Class. Quany. Grav | null | 10.1088/1361-6382/ac566c | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | A new formalism for thermodynamics of AdS black holes called the {\em
restricted phase space thermodynamics} (RPST) is proposed. The construction is
based on top of Visser's holographic thermodynamics, but with the AdS radius
fixed as a constant. Thus the RPST is free of the $(P,V)$ variables but
inherits the central... | [
{
"created": "Sat, 4 Dec 2021 17:23:47 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Dec 2021 03:09:21 GMT",
"version": "v2"
},
{
"created": "Sat, 18 Dec 2021 02:22:16 GMT",
"version": "v3"
},
{
"created": "Thu, 17 Feb 2022 11:35:54 GMT",
"version": "v4"
}
] | 2022-04-13 | [
[
"Gao",
"Zeyuan",
""
],
[
"Zhao",
"Liu",
""
]
] | A new formalism for thermodynamics of AdS black holes called the {\em restricted phase space thermodynamics} (RPST) is proposed. The construction is based on top of Visser's holographic thermodynamics, but with the AdS radius fixed as a constant. Thus the RPST is free of the $(P,V)$ variables but inherits the central c... |
1101.1121 | Tetsuya Shiromizu | Tetsuya Shiromizu, Seiju Ohashi, Kentaro Tanabe | A perturbative no-hair of form fields for higher dimensional static
black holes | Latex, 9pages, references added | Phys.Rev.D83:084016,2011 | 10.1103/PhysRevD.83.084016 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we examine the static perturbation of p-form field strengths
around higher dimensional Schwarzschild spacetimes. As a result, we can see
that the static perturbations do not exist when p\geq 3. This result supports
the no-hair properties of p-form fields. However, this does not exclude the
presence of t... | [
{
"created": "Thu, 6 Jan 2011 00:31:35 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Jan 2011 01:27:55 GMT",
"version": "v2"
},
{
"created": "Thu, 13 Jan 2011 03:18:40 GMT",
"version": "v3"
}
] | 2011-04-22 | [
[
"Shiromizu",
"Tetsuya",
""
],
[
"Ohashi",
"Seiju",
""
],
[
"Tanabe",
"Kentaro",
""
]
] | In this paper we examine the static perturbation of p-form field strengths around higher dimensional Schwarzschild spacetimes. As a result, we can see that the static perturbations do not exist when p\geq 3. This result supports the no-hair properties of p-form fields. However, this does not exclude the presence of the... |
1301.5232 | Stefan Palenta | Stefan Palenta and Reinhard Meinel | Post-Newtonian expansion of a rigidly rotating disc of dust with a
constant specific charge | 18 pages, 9 figures; v2: corrected version, to appear in CQG | Class.Quant.Grav.30:085010,2013 | 10.1088/0264-9381/30/8/085010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an algorithm for obtaining the post-Newtonian expansion of the
asymptotically flat solution to the Einstein-Maxwell equations describing a
rigidly rotating disc of dust with a constant specific charge. Explicit
analytic expressions are calculated up to the eighth order. The results are
used for a physical ... | [
{
"created": "Tue, 22 Jan 2013 16:42:37 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Mar 2013 09:46:08 GMT",
"version": "v2"
}
] | 2013-03-27 | [
[
"Palenta",
"Stefan",
""
],
[
"Meinel",
"Reinhard",
""
]
] | We present an algorithm for obtaining the post-Newtonian expansion of the asymptotically flat solution to the Einstein-Maxwell equations describing a rigidly rotating disc of dust with a constant specific charge. Explicit analytic expressions are calculated up to the eighth order. The results are used for a physical di... |
1908.07555 | Vasilis Oikonomou | S.D. Odintsov, V.K. Oikonomou | Inflationary Phenomenology of Einstein Gauss-Bonnet Gravity Compatible
with GW170817 | PLB Accepted | null | 10.1016/j.physletb.2019.134874 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we shall study Einstein Gauss-Bonnet theories and we investigate
when these can have their gravitational wave speed equal to the speed of light,
which is unity in natural units, thus becoming compatible with the striking
event GW170817. We demonstrate how this is possible and we show that if the
scalar c... | [
{
"created": "Tue, 20 Aug 2019 18:14:01 GMT",
"version": "v1"
}
] | 2019-10-02 | [
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this work we shall study Einstein Gauss-Bonnet theories and we investigate when these can have their gravitational wave speed equal to the speed of light, which is unity in natural units, thus becoming compatible with the striking event GW170817. We demonstrate how this is possible and we show that if the scalar cou... |
2008.11744 | Jose Luis Bl\'azquez-Salcedo | Jose Luis Bl\'azquez-Salcedo, Carlos A. R. Herdeiro, Sarah Kahlen,
Jutta Kunz, Alexandre M. Pombo, Eugen Radu | Quasinormal modes of hot, cold and bald Einstein-Maxwell-scalar black
holes | 21 pages, 8 figures | null | 10.1140/epjc/s10052-021-08952-w | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein-Maxwell-scalar models allow for different classes of black hole
solutions, depending on the non-minimal coupling function $f(\phi)$ employed,
between the scalar field and the Maxwell invariant. Here, we address the linear
mode stability of the black hole solutions obtained recently for a quartic
coupling fun... | [
{
"created": "Wed, 26 Aug 2020 18:01:01 GMT",
"version": "v1"
}
] | 2021-03-17 | [
[
"Blázquez-Salcedo",
"Jose Luis",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Kahlen",
"Sarah",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Pombo",
"Alexandre M.",
""
],
[
"Radu",
"Eugen",
""
]
] | Einstein-Maxwell-scalar models allow for different classes of black hole solutions, depending on the non-minimal coupling function $f(\phi)$ employed, between the scalar field and the Maxwell invariant. Here, we address the linear mode stability of the black hole solutions obtained recently for a quartic coupling funct... |
0803.2930 | Bibekananda Nayak jr | Bibekananda Nayak and Lambodar Prasad Singh | Present Acceleration of Universe, Holographic Dark Energy and
Brans-Dicke Theory | 10 pages | Modern Physics Letters A 24 (2009) 1785-1792 | 10.1142/S0217732309030205 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present day accelerated expansion of the universe is naturally addressed
within the Brans-Dicke theory just by using holographic dark energy model with
inverse of Hubble scale as IR cutoff. It is also concluded that if the universe
continues to expand, then one day it might be completely filled with dark
energy.
| [
{
"created": "Thu, 20 Mar 2008 05:36:55 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Mar 2008 09:19:33 GMT",
"version": "v2"
},
{
"created": "Wed, 25 Jun 2008 10:05:58 GMT",
"version": "v3"
},
{
"created": "Wed, 9 Jul 2008 07:35:22 GMT",
"version": "v4"
},
{
"cr... | 2015-05-13 | [
[
"Nayak",
"Bibekananda",
""
],
[
"Singh",
"Lambodar Prasad",
""
]
] | The present day accelerated expansion of the universe is naturally addressed within the Brans-Dicke theory just by using holographic dark energy model with inverse of Hubble scale as IR cutoff. It is also concluded that if the universe continues to expand, then one day it might be completely filled with dark energy. |
1811.00993 | Jerzy Matyjasek | Jerzy Matyjasek | Quantum fields in Bianchi type I spacetimes. The Kasner metrc | null | Phys. Rev. D 98, 104054 (2018) | 10.1103/PhysRevD.98.104054 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Vacuum polarization of the quantized massive fields in Bianchi type I
spacetime is investigated from the point of view of the adiabatic approximation
and the Schwinger-DeWitt method. It is shown that both approaches give the same
results that can be used in construction of the trace of the stress-energy
tensor of the... | [
{
"created": "Fri, 2 Nov 2018 17:14:34 GMT",
"version": "v1"
}
] | 2018-12-05 | [
[
"Matyjasek",
"Jerzy",
""
]
] | Vacuum polarization of the quantized massive fields in Bianchi type I spacetime is investigated from the point of view of the adiabatic approximation and the Schwinger-DeWitt method. It is shown that both approaches give the same results that can be used in construction of the trace of the stress-energy tensor of the c... |
gr-qc/0103027 | Jozef Sima | Jozef Sima and Miroslav Sukenik | Coincidence of the Universe Description Stemming from D-branes Theory
and ENU Model | 4 pages, LaTeX | null | null | SS-01-03 | gr-qc | null | The contribution provides a comparison of consequences stemming from D-brane
theories and Expansive Nondecelerative Universe model, and calls attention to
coincidence of the results arising from the mentioned approaches to a
description of the Universe. It follows from the comparison that the effects of
quantum gravi... | [
{
"created": "Fri, 9 Mar 2001 10:58:53 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sima",
"Jozef",
""
],
[
"Sukenik",
"Miroslav",
""
]
] | The contribution provides a comparison of consequences stemming from D-brane theories and Expansive Nondecelerative Universe model, and calls attention to coincidence of the results arising from the mentioned approaches to a description of the Universe. It follows from the comparison that the effects of quantum gravita... |
0905.0336 | Stefano Foffa | Carlos Filipe Da Silva Costa, Stefano Foffa, Riccardo Sturani | Multichannel matched filtering for spherical gravitational wave antennas | 11 pages, 4 figures, final version to be published on Classical and
Quantum Gravity as part of the Proceedings of GWDAW13 | null | 10.1088/0264-9381/26/20/204019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the performance of a multidimensional matched filter as a follow-up
module of the coherent method recently developed by two of us for the detection
of gravitational wave bursts by spherical resonant detectors. We have tested
this strategy on the same set of injections used for the coherent method and
found t... | [
{
"created": "Mon, 4 May 2009 09:39:18 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Aug 2009 08:43:29 GMT",
"version": "v2"
}
] | 2015-05-13 | [
[
"Costa",
"Carlos Filipe Da Silva",
""
],
[
"Foffa",
"Stefano",
""
],
[
"Sturani",
"Riccardo",
""
]
] | We study the performance of a multidimensional matched filter as a follow-up module of the coherent method recently developed by two of us for the detection of gravitational wave bursts by spherical resonant detectors. We have tested this strategy on the same set of injections used for the coherent method and found tha... |
1410.6373 | Alberto Rozas-Fernandez | Alberto Rozas-Fern\'andez | K-essential covariant holography | 14 pages, 6 figures. Accepted for publication in General Relativity
and Gravitation. arXiv admin note: substantial text overlap with
arXiv:1407.8426 | null | 10.1007/s10714-014-1825-9 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The holographic principle is applied to a flat Friedmann-Robertson-Walker
space-time dominated by dark energy when this is due to the presence of a
k-essence scalar field, both for dark energy and phantom scenarios. In this
framework, a geometrical covariant approach permits the construction of
holographic hypersurfa... | [
{
"created": "Thu, 23 Oct 2014 14:10:21 GMT",
"version": "v1"
}
] | 2014-10-24 | [
[
"Rozas-Fernández",
"Alberto",
""
]
] | The holographic principle is applied to a flat Friedmann-Robertson-Walker space-time dominated by dark energy when this is due to the presence of a k-essence scalar field, both for dark energy and phantom scenarios. In this framework, a geometrical covariant approach permits the construction of holographic hypersurface... |
gr-qc/0211095 | Guendel Eduardo | E.I.Guendelman and O.Katz (Ben Gurion University) | Inflation and Transition to a Slowly Accelerating Phase from S.S.B. of
Scale Invariance | 22 pages, latex, three figures now in separate files | Class.Quant.Grav. 20 (2003) 1715-1728 | 10.1088/0264-9381/20/9/309 | BGU Report 1480/2002 | gr-qc | null | We consider the effects of adding a scale invariant $R^{2}$ term to the
action of the scale invariant model (SIM) studied previously by one of us
(E.I.G., Mod. Phys. Lett. A14, 1043 (1999)). The SIM belongs to the general
class of theories, where an integration measure independent of the metric is
introduced. To impl... | [
{
"created": "Wed, 27 Nov 2002 13:42:12 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Nov 2002 09:27:01 GMT",
"version": "v2"
}
] | 2017-08-23 | [
[
"Guendelman",
"E. I.",
"",
"Ben Gurion University"
],
[
"Katz",
"O.",
"",
"Ben Gurion University"
]
] | We consider the effects of adding a scale invariant $R^{2}$ term to the action of the scale invariant model (SIM) studied previously by one of us (E.I.G., Mod. Phys. Lett. A14, 1043 (1999)). The SIM belongs to the general class of theories, where an integration measure independent of the metric is introduced. To implem... |
1005.1427 | Jerzy Matyjasek | Jerzy Matyjasek, Dariusz Tryniecki and Katarzyna Zwierzchowska | Vacuum polarization of the quantized massive scalar field in
Reissner-Nordstr\"om spacetime | null | Phys.Rev.D81:124047,2010 | 10.1103/PhysRevD.81.124047 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The approximation of the renormalized stress-energy tensor of the quantized
massive scalar field in Reissner-Nordstr\"om spacetime is constructed. It is
achieved by functional differentiation of the first two nonvanishing terms of
the Schwinger-DeWitt expansion involving the coincidence limit of the
Hadamard-Minakshi... | [
{
"created": "Sun, 9 May 2010 22:32:36 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Matyjasek",
"Jerzy",
""
],
[
"Tryniecki",
"Dariusz",
""
],
[
"Zwierzchowska",
"Katarzyna",
""
]
] | The approximation of the renormalized stress-energy tensor of the quantized massive scalar field in Reissner-Nordstr\"om spacetime is constructed. It is achieved by functional differentiation of the first two nonvanishing terms of the Schwinger-DeWitt expansion involving the coincidence limit of the Hadamard-Minakshisu... |
1107.3685 | Ritabrata Biswas | Ritabrata Biswas | Change of Density when Chaplygin gas is accreting upon a black hole | 7 pages, 24 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work I study the density change along the accretion and wind branches
when modified Chaplygin gas is taken to be the accreting fluid. I get a high
wind density very near to black hole while a low wind density far from the
black hole. In modified Chaplygin gas accretion case a local minima in
accretion-density... | [
{
"created": "Tue, 19 Jul 2011 11:13:57 GMT",
"version": "v1"
}
] | 2011-07-20 | [
[
"Biswas",
"Ritabrata",
""
]
] | In this work I study the density change along the accretion and wind branches when modified Chaplygin gas is taken to be the accreting fluid. I get a high wind density very near to black hole while a low wind density far from the black hole. In modified Chaplygin gas accretion case a local minima in accretion-density i... |
2403.04054 | Quinn Taylor | Quinn Taylor, Glenn D. Starkman, Michael Hinczewski, Deyan P.
Mihaylov, Joseph Silk, Jose de Freitas Pacheco | Extremal Kerr Black Hole Dark Matter from Hawking Evaporation | 11 Pages, 7 figures | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | The Hawking process results in a monotonic decrease of the black hole mass,
but a biased random walk of the black hole angular momentum. We demonstrate
that this stochastic process leads to a significant fraction of primordial
black holes becoming extremal Kerr black holes (EKBHs) of one to a few Planck
masses regard... | [
{
"created": "Wed, 6 Mar 2024 21:01:06 GMT",
"version": "v1"
}
] | 2024-03-08 | [
[
"Taylor",
"Quinn",
""
],
[
"Starkman",
"Glenn D.",
""
],
[
"Hinczewski",
"Michael",
""
],
[
"Mihaylov",
"Deyan P.",
""
],
[
"Silk",
"Joseph",
""
],
[
"Pacheco",
"Jose de Freitas",
""
]
] | The Hawking process results in a monotonic decrease of the black hole mass, but a biased random walk of the black hole angular momentum. We demonstrate that this stochastic process leads to a significant fraction of primordial black holes becoming extremal Kerr black holes (EKBHs) of one to a few Planck masses regardle... |
2103.05643 | Kyriakos Destounis Dr. | Kyriakos Destounis, Arthur G. Suvorov and Kostas D. Kokkotas | Gravitational-wave glitches in chaotic extreme-mass-ratio inspirals | 5 pages, 2 figures, accepted for publication in Physical Review
Letters, matches published version | Phys. Rev. Lett. 126, 141102 (2021) | 10.1103/PhysRevLett.126.141102 | null | gr-qc astro-ph.HE nlin.CD | http://creativecommons.org/licenses/by/4.0/ | The Kerr geometry admits the Carter symmetry, which ensures that the geodesic
equations are integrable. It is shown that gravitational waveforms associated
with extreme-mass-ratio inspirals involving a non-integrable compact object
display `glitch' phenomena, where the frequencies of gravitational waves
increase abru... | [
{
"created": "Tue, 9 Mar 2021 19:00:00 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Apr 2021 17:45:21 GMT",
"version": "v2"
}
] | 2021-04-09 | [
[
"Destounis",
"Kyriakos",
""
],
[
"Suvorov",
"Arthur G.",
""
],
[
"Kokkotas",
"Kostas D.",
""
]
] | The Kerr geometry admits the Carter symmetry, which ensures that the geodesic equations are integrable. It is shown that gravitational waveforms associated with extreme-mass-ratio inspirals involving a non-integrable compact object display `glitch' phenomena, where the frequencies of gravitational waves increase abrupt... |
2006.15017 | Timothy Clifton | Timothy Clifton, Pedro Carrilho, Pedro G. S. Fernandes, David J.
Mulryne | Observational Constraints on the Regularized 4D Einstein-Gauss-Bonnet
Theory of Gravity | 17 pages | Phys. Rev. D 102, 084005 (2020) | 10.1103/PhysRevD.102.084005 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the observational constraints that can be imposed on
the coupling parameter, $\hat \alpha$, of the regularized version of the
4-dimensional Einstein-Gauss-Bonnet theory of gravity. We use the scalar-tensor
field equations of this theory to perform a thorough investigation of its
slow-motion and... | [
{
"created": "Fri, 26 Jun 2020 14:39:05 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Jun 2020 09:48:35 GMT",
"version": "v2"
},
{
"created": "Fri, 2 Oct 2020 13:06:43 GMT",
"version": "v3"
},
{
"created": "Wed, 7 Oct 2020 13:57:11 GMT",
"version": "v4"
}
] | 2020-10-08 | [
[
"Clifton",
"Timothy",
""
],
[
"Carrilho",
"Pedro",
""
],
[
"Fernandes",
"Pedro G. S.",
""
],
[
"Mulryne",
"David J.",
""
]
] | In this paper we study the observational constraints that can be imposed on the coupling parameter, $\hat \alpha$, of the regularized version of the 4-dimensional Einstein-Gauss-Bonnet theory of gravity. We use the scalar-tensor field equations of this theory to perform a thorough investigation of its slow-motion and w... |
1704.04817 | Jos\'e Ricardo Oliveira | Jos\'e Ricardo Oliveira | EPRL/FK Asymptotics and the Flatness Problem | 26 pages, 3 figures. Mathematica scripts for example calculations
included in ancillary files | null | 10.1088/1361-6382/aaae82 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spin foam models are an approach to quantum gravity based on the concept of
sum over states, which aims to describe quantum spacetime dynamics in a way
that its parent framework, loop quantum gravity, has not as of yet succeeded.
Since these models' relation to classical Einstein gravity is not explicit, an
important... | [
{
"created": "Sun, 16 Apr 2017 20:48:50 GMT",
"version": "v1"
}
] | 2018-04-18 | [
[
"Oliveira",
"José Ricardo",
""
]
] | Spin foam models are an approach to quantum gravity based on the concept of sum over states, which aims to describe quantum spacetime dynamics in a way that its parent framework, loop quantum gravity, has not as of yet succeeded. Since these models' relation to classical Einstein gravity is not explicit, an important t... |
2302.14419 | Takafumi Kokubu | Takafumi Kokubu | Quasi-periodic relativistic shells in reflecting boundaries: How likely
are black holes to form? | 19pages, 10figures. Acknowledgments improved | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | A system of two gravitating bodies floating around a restricted region of
strong gravitational field is investigated. We consider two concentric
spherically symmetric timelike shells spatially constrained by a perfectly
reflecting inner and outer boundary. It is shown numerically that even when the
gravitational radi... | [
{
"created": "Tue, 28 Feb 2023 08:51:36 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Dec 2023 05:44:00 GMT",
"version": "v2"
}
] | 2023-12-22 | [
[
"Kokubu",
"Takafumi",
""
]
] | A system of two gravitating bodies floating around a restricted region of strong gravitational field is investigated. We consider two concentric spherically symmetric timelike shells spatially constrained by a perfectly reflecting inner and outer boundary. It is shown numerically that even when the gravitational radius... |
2209.07050 | Bibhas Majhi Ranjan | Krishnakanta Bhattacharya, Bibhas Ranjan Majhi | Scalar-tensor gravity from thermodynamic and fluid-gravity perspective | Review article mainly based on arXiv: 1702.07166, 1803.03771,
2002.04743, 2105.07787; accepted in the special issue of General Relativity
and Gravitation, dedicated to the memory of Professor Thanu Padmanabhan | null | 10.1007/s10714-022-02999-0 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Out of several possible extensions of general relativity, the scalar-tensor
theory is the most popular for several reasons. Since the quantum description
of gravity is yet to be formulated properly, the understanding of a
gravitational theory remains incomplete until the study of thermodynamic and
fluid-gravity aspec... | [
{
"created": "Thu, 15 Sep 2022 05:12:18 GMT",
"version": "v1"
}
] | 2022-10-12 | [
[
"Bhattacharya",
"Krishnakanta",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
]
] | Out of several possible extensions of general relativity, the scalar-tensor theory is the most popular for several reasons. Since the quantum description of gravity is yet to be formulated properly, the understanding of a gravitational theory remains incomplete until the study of thermodynamic and fluid-gravity aspects... |
2009.09966 | Abbas Sherif | Abbas M. Sherif and Peter K. S. Dunsby | Geometric properties of a certain class of compact dynamical horizons in
locally rotationally symmetric class II spacetimes | 16 pages and 1 figure | Int. J. Geom. Meth. Mod. Phys. Vol. 18. No. 01, 2150010 (2021) | 10.1142/S0219887821500109 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the geometry of a certain class of compact dynamical
horizons with a time-dependent induced metric in locally rotationally symmetric
class II spacetimes. We first obtain a compactness condition for embedded
$3$-manifolds in these spacetimes, satisfying the weak energy condition, with
non-negati... | [
{
"created": "Mon, 21 Sep 2020 15:47:20 GMT",
"version": "v1"
},
{
"created": "Sat, 17 Oct 2020 18:34:23 GMT",
"version": "v2"
}
] | 2021-03-26 | [
[
"Sherif",
"Abbas M.",
""
],
[
"Dunsby",
"Peter K. S.",
""
]
] | In this paper we study the geometry of a certain class of compact dynamical horizons with a time-dependent induced metric in locally rotationally symmetric class II spacetimes. We first obtain a compactness condition for embedded $3$-manifolds in these spacetimes, satisfying the weak energy condition, with non-negative... |
2311.02456 | Mehrdad Farhoudi Prof. | Mohammad Reza Khosravipoor and Mehrdad Farhoudi | Thermodynamics of Deformed AdS-Schwarzschild Black Hole | 13 pages, 6 figures | Eur. Phys. J. C (2023) 83:1045 | 10.1140/epjc/s10052-023-12222-2 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | By implementing the gravitational decoupling method, we find the deformed
AdS-Schwarzschild black hole solution when there is also an additional
gravitational source, which obeys the weak energy condition. We also
deliberately choose its energy density to be a certain monotonic function
consistent with the constraint... | [
{
"created": "Sat, 4 Nov 2023 16:44:20 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Nov 2023 12:18:05 GMT",
"version": "v2"
}
] | 2023-11-20 | [
[
"Khosravipoor",
"Mohammad Reza",
""
],
[
"Farhoudi",
"Mehrdad",
""
]
] | By implementing the gravitational decoupling method, we find the deformed AdS-Schwarzschild black hole solution when there is also an additional gravitational source, which obeys the weak energy condition. We also deliberately choose its energy density to be a certain monotonic function consistent with the constraints.... |
1703.08226 | Daniel Guariento | Henrique Gomes, Daniel C. Guariento | Hamiltonian analysis of the cuscuton | 10 pages | Phys. Rev. D 95, 104049 (2017) | 10.1103/PhysRevD.95.104049 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cuscuton was introduced in the context of cosmology as a field with
infinite speed of propagation. It has been claimed to resemble Ho\v{r}ava
gravity in a certain limit, and it is a good candidate for an ether theory in
which a time-dependent cosmological constant appears naturally. The analysis of
its properties... | [
{
"created": "Thu, 23 Mar 2017 20:34:14 GMT",
"version": "v1"
}
] | 2017-06-01 | [
[
"Gomes",
"Henrique",
""
],
[
"Guariento",
"Daniel C.",
""
]
] | The cuscuton was introduced in the context of cosmology as a field with infinite speed of propagation. It has been claimed to resemble Ho\v{r}ava gravity in a certain limit, and it is a good candidate for an ether theory in which a time-dependent cosmological constant appears naturally. The analysis of its properties i... |
2107.13905 | Richard Woodard | L. Tan (University of Florida), N. C. Tsamis (University of Crete) and
R. P. Woodard (University of Florida) | How Inflationary Gravitons Affect Gravitational Radiation | 29 pages, 1 figure, 4 tables, uses LaTeX2e, version 2 has some typos
corrected for publication | Phil. Trans. R. Soc. A 380 (2021) 0187 | 10.1098/rsta.2021.0187 | UFIFT-QG-21-02 , CCTP-2021-02 | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We include the single graviton loop contribution to the linearized Einstein
equation. Explicit results are obtained for one loop corrections to the
propagation of gravitational radiation. Although suppressed by a minuscule
loop-counting parameter, these corrections are enhanced by the square of the
number of inflatio... | [
{
"created": "Thu, 29 Jul 2021 11:28:30 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jun 2022 07:11:51 GMT",
"version": "v2"
}
] | 2022-06-27 | [
[
"Tan",
"L.",
"",
"University of Florida"
],
[
"Tsamis",
"N. C.",
"",
"University of Crete"
],
[
"Woodard",
"R. P.",
"",
"University of Florida"
]
] | We include the single graviton loop contribution to the linearized Einstein equation. Explicit results are obtained for one loop corrections to the propagation of gravitational radiation. Although suppressed by a minuscule loop-counting parameter, these corrections are enhanced by the square of the number of inflationa... |
1901.09956 | Arkadiusz B{\l}aut | Arkadiusz B{\l}aut | Gauge independent response of a laser interferometer to gravitational
waves | 10 pages, 3 figures | Classical and Quantum Gravity, 2019 | 10.1088/1361-6382/ab01ad | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Laser interferometer response to a plane gravitational wave on the Minkowski
background is given. The derivation does not assume any particular gauge within
a class compatible with almost Minkowskian coordinates that preserve a plane
wave form of the solutions. Consequently all ten modes of the metric are taken
into ... | [
{
"created": "Mon, 28 Jan 2019 19:34:21 GMT",
"version": "v1"
}
] | 2019-01-30 | [
[
"Błaut",
"Arkadiusz",
""
]
] | Laser interferometer response to a plane gravitational wave on the Minkowski background is given. The derivation does not assume any particular gauge within a class compatible with almost Minkowskian coordinates that preserve a plane wave form of the solutions. Consequently all ten modes of the metric are taken into an... |
2301.08163 | Georgios Vacalis Mr | Georgios Vacalis, Giacomo Marocco, James Bamber, Robert Bingham,
Gianluca Gregori | Detection of high-frequency gravitational waves using high-energy pulsed
lasers | 15 pages, 2 figures, v2 matches the published version | Class. Quantum Grav. 40 (2023) 155006 | 10.1088/1361-6382/acd517 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new method for detecting high-frequency gravitational waves
(GWs) using high-energy pulsed lasers. Through the inverse Gertsenshtein
effect, the interaction between a GW and the laser beam results in the creation
of an electromagnetic signal. The latter can be detected using single-photon
counting techni... | [
{
"created": "Thu, 19 Jan 2023 16:54:27 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Jun 2023 14:13:53 GMT",
"version": "v2"
}
] | 2023-06-30 | [
[
"Vacalis",
"Georgios",
""
],
[
"Marocco",
"Giacomo",
""
],
[
"Bamber",
"James",
""
],
[
"Bingham",
"Robert",
""
],
[
"Gregori",
"Gianluca",
""
]
] | We propose a new method for detecting high-frequency gravitational waves (GWs) using high-energy pulsed lasers. Through the inverse Gertsenshtein effect, the interaction between a GW and the laser beam results in the creation of an electromagnetic signal. The latter can be detected using single-photon counting techniqu... |
2407.10095 | Sayan Kar | Ayan Dey and Sayan Kar (IIT Kharagpur, India) | Closed strings in pp-wave spacetimes and the memory effect | 21 pages, 8 figures, minor changes in text, references added | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study closed string evolution in the pp-wave spacetime assuming different
pulse shapes (square and sech-squared) in the exact gravitational wave metric.
It is shown that the shape of a circular closed string changes permanently to
an elliptical form after the pulse has departed. The worldsheet geometry also
displa... | [
{
"created": "Sun, 14 Jul 2024 06:15:38 GMT",
"version": "v1"
},
{
"created": "Sat, 20 Jul 2024 06:17:15 GMT",
"version": "v2"
}
] | 2024-07-23 | [
[
"Dey",
"Ayan",
"",
"IIT Kharagpur, India"
],
[
"Kar",
"Sayan",
"",
"IIT Kharagpur, India"
]
] | We study closed string evolution in the pp-wave spacetime assuming different pulse shapes (square and sech-squared) in the exact gravitational wave metric. It is shown that the shape of a circular closed string changes permanently to an elliptical form after the pulse has departed. The worldsheet geometry also displays... |
2307.09354 | Pierbiagio Pieri | Alessandro Pesci, Pierbiagio Pieri | Testing the nonclassicality of gravity with the field of a single
delocalized mass | 11 pages, 6 figures. v2: Final revision, corresponding to the
published version | Phys. Rev. A 108, 062801 (2023) | 10.1103/PhysRevA.108.062801 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Most of the existing proposals for laboratory tests of a quantum nature of
gravity are based on the use of two delocalized masses or harmonically bound
masses prepared in pure quantum states with large enough spatial extent. Here a
setup is proposed that is based on a single delocalized mass coupled to a
harmonically... | [
{
"created": "Tue, 18 Jul 2023 15:40:16 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Jul 2023 13:56:39 GMT",
"version": "v2"
},
{
"created": "Fri, 1 Dec 2023 15:40:50 GMT",
"version": "v3"
}
] | 2023-12-04 | [
[
"Pesci",
"Alessandro",
""
],
[
"Pieri",
"Pierbiagio",
""
]
] | Most of the existing proposals for laboratory tests of a quantum nature of gravity are based on the use of two delocalized masses or harmonically bound masses prepared in pure quantum states with large enough spatial extent. Here a setup is proposed that is based on a single delocalized mass coupled to a harmonically t... |
1204.5133 | Carlos A. Batista da S. Filho | Carlos Batista | Weyl Tensor Classification in Four-dimensional Manifolds of All
Signatures | 10 pages. This version match the published one | Gen. Rel. Grav. 45: page 785, 2013 | 10.1007/s10714-013-1499-8 | null | gr-qc hep-th math.DG | http://creativecommons.org/licenses/by/3.0/ | It is well known that the classification of the Weyl tensor in Lorentzian
manifolds of dimension four, the so called Petrov classification, was a great
tool to the development of general relativity. Using the bivector approach it
is shown in this article a classification for the Weyl tensor in all
four-dimensional ma... | [
{
"created": "Mon, 23 Apr 2012 18:26:56 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Jun 2012 21:56:20 GMT",
"version": "v2"
},
{
"created": "Tue, 3 Jul 2012 10:39:05 GMT",
"version": "v3"
},
{
"created": "Thu, 7 Feb 2013 00:08:05 GMT",
"version": "v4"
}
] | 2013-03-12 | [
[
"Batista",
"Carlos",
""
]
] | It is well known that the classification of the Weyl tensor in Lorentzian manifolds of dimension four, the so called Petrov classification, was a great tool to the development of general relativity. Using the bivector approach it is shown in this article a classification for the Weyl tensor in all four-dimensional mani... |
gr-qc/0406024 | Hossein Farajollahi | Hossein Farajollahi | World-line observables and clocks in General Relativity | 16 pages | IJTPGO, 2004 | null | null | gr-qc | null | A proposal for the issue of time and observables in any parameterized theory
such as general relativity is addressed. Introduction of a gauge potential
3-form A in the theory of relativity enables us to define a gauge-invariant
quantity which can be used by observers as a clock to measure the passage of
time. This dy... | [
{
"created": "Mon, 7 Jun 2004 12:33:58 GMT",
"version": "v1"
},
{
"created": "Sun, 20 Nov 2005 06:06:08 GMT",
"version": "v2"
}
] | 2008-01-30 | [
[
"Farajollahi",
"Hossein",
""
]
] | A proposal for the issue of time and observables in any parameterized theory such as general relativity is addressed. Introduction of a gauge potential 3-form A in the theory of relativity enables us to define a gauge-invariant quantity which can be used by observers as a clock to measure the passage of time. This dyna... |
2012.13359 | Ramin G. Daghigh | Ramin G. Daghigh, Michael D. Green, and Gabor Kunstatter | Scalar Perturbations and Stability of a Loop Quantum Corrected Kruskal
Black Hole | 21 pages, 9 figures, accepted for publication in PRD, paper is
restructured and new figures are added. arXiv admin note: text overlap with
arXiv:2009.02367 | Phys. Rev. D 103, 084031 (2021) | 10.1103/PhysRevD.103.084031 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We investigate the massless scalar field perturbations of a new loop quantum
gravity motivated regular black hole proposed by Ashtekar {\it et al.} in
[Phys.Rev.Lett. 121, 241301 (2018), Phys.Rev.D 98, 126003 (2018)]. The
spacetime of this black hole is distinguished by its asymptotic properties: in
Schwarzschild coo... | [
{
"created": "Thu, 24 Dec 2020 17:44:19 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Apr 2021 18:24:25 GMT",
"version": "v2"
}
] | 2021-04-28 | [
[
"Daghigh",
"Ramin G.",
""
],
[
"Green",
"Michael D.",
""
],
[
"Kunstatter",
"Gabor",
""
]
] | We investigate the massless scalar field perturbations of a new loop quantum gravity motivated regular black hole proposed by Ashtekar {\it et al.} in [Phys.Rev.Lett. 121, 241301 (2018), Phys.Rev.D 98, 126003 (2018)]. The spacetime of this black hole is distinguished by its asymptotic properties: in Schwarzschild coord... |
2007.15361 | Alessandro D'Adda | Alessandro D'Adda | Simplicial Gravity with Coordinates | 35 pages, 0 figures | null | 10.1088/1361-6382/abf66d | null | gr-qc hep-lat hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a formulation of Regge Calculus where arbitrary coordinates are
associated to each vertex of a simplicial complex and the degrees of freedom
are given by the metric on each simplex. The lengths of the edges are thus
determined and are left invariant under arbitrary transformations of the
discrete set of co... | [
{
"created": "Thu, 30 Jul 2020 10:26:20 GMT",
"version": "v1"
}
] | 2021-06-09 | [
[
"D'Adda",
"Alessandro",
""
]
] | We present a formulation of Regge Calculus where arbitrary coordinates are associated to each vertex of a simplicial complex and the degrees of freedom are given by the metric on each simplex. The lengths of the edges are thus determined and are left invariant under arbitrary transformations of the discrete set of coor... |
gr-qc/0411103 | L. C. Garcia de Andrade | L.C. Garcia de Andrade | Non-Riemannian acoustic black holes: Hawking radiation and Lorentz
symmetry breaking | Latex file | null | null | null | gr-qc | null | A non-Riemannian geometrical approach to the investigation of an acoustic
black hole in irrotational mean flows, based on the Lighthill vortex sound
theory is given. This additional example of analog gravity based on classical
fluids is used to investigate the acoustic Lorentz violation. An example is
given where the... | [
{
"created": "Sun, 21 Nov 2004 22:11:37 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Nov 2004 01:08:03 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"de Andrade",
"L. C. Garcia",
""
]
] | A non-Riemannian geometrical approach to the investigation of an acoustic black hole in irrotational mean flows, based on the Lighthill vortex sound theory is given. This additional example of analog gravity based on classical fluids is used to investigate the acoustic Lorentz violation. An example is given where the c... |
2310.16467 | Ram Brustein | Ram Brustein, A.J.M. Medved | Sourcing the Kerr geometry | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The Kerr metric is a vacuum solution of the Einstein equations outside of a
rotating black hole, but what interior matter is actually rotating and sourcing
the Kerr geometry? Here, we describe a rotating exotic matter which can source
the Kerr geometry for the entire acceptable range of its spin parameter and be
show... | [
{
"created": "Wed, 25 Oct 2023 08:44:24 GMT",
"version": "v1"
}
] | 2023-10-26 | [
[
"Brustein",
"Ram",
""
],
[
"Medved",
"A. J. M.",
""
]
] | The Kerr metric is a vacuum solution of the Einstein equations outside of a rotating black hole, but what interior matter is actually rotating and sourcing the Kerr geometry? Here, we describe a rotating exotic matter which can source the Kerr geometry for the entire acceptable range of its spin parameter and be shown ... |
gr-qc/9801080 | Romesh Kaul | Romesh K. Kaul and Parthasarathi Majumdar | Quantum Black Hole Entropy | 7 pages, Revtex, some new references added | Phys.Lett. B439 (1998) 267-270 | 10.1016/S0370-2693(98)01030-2 | IMSc-97/11/39 | gr-qc hep-th | null | We derive an exact formula for the dimensionality of the Hilbert space of the
boundary states of SU(2) Chern-Simons theory, which, according to the recent
work of Ashtekar et al, leads to the Bekenstein-Hawking entropy of a four
dimensional Schwarzschild black hole. Our result stems from the relation
between the (bou... | [
{
"created": "Fri, 23 Jan 1998 08:50:16 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Feb 1998 09:29:44 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Kaul",
"Romesh K.",
""
],
[
"Majumdar",
"Parthasarathi",
""
]
] | We derive an exact formula for the dimensionality of the Hilbert space of the boundary states of SU(2) Chern-Simons theory, which, according to the recent work of Ashtekar et al, leads to the Bekenstein-Hawking entropy of a four dimensional Schwarzschild black hole. Our result stems from the relation between the (bound... |
1911.04135 | Alessandro Pesci | Alessandro Pesci | Minimum-length Ricci scalar for null separated events | 24 pages; v3: some clarifications, it corresponds to the published
version | Phys. Rev. D 102, 124057 (2020) | 10.1103/PhysRevD.102.124057 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider spacetime endowed with a zero-point length, i.e. with an
effective metric structure which allows for a (quantum-mechanically arising)
finite distance $L_0$ between events in the limit of their coincidence.
Restricting attention to null separated events, we find an expression for the
Ricci (bi)scalar in th... | [
{
"created": "Mon, 11 Nov 2019 08:34:22 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Oct 2020 07:57:26 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Jan 2021 13:41:13 GMT",
"version": "v3"
}
] | 2021-01-11 | [
[
"Pesci",
"Alessandro",
""
]
] | We consider spacetime endowed with a zero-point length, i.e. with an effective metric structure which allows for a (quantum-mechanically arising) finite distance $L_0$ between events in the limit of their coincidence. Restricting attention to null separated events, we find an expression for the Ricci (bi)scalar in this... |
1812.01287 | Tays Miranda De Andrade | Tays Miranda, Celia Escamilla-Rivera, Oliver F. Piattella and J\'ulio
C. Fabris | Generic slow-roll and non-gaussianity parameters in $f(R)$ theories | 4 figures. Accepted for publication in JCAP | null | 10.1088/1475-7516/2019/05/028 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we establish \textit{formulae} for the inflationary slow-roll
parameters $\epsilon$, $\eta$ and $\zeta$ as functions of the Ricci scalar $R$
for $f(R)$ theories of gravity. As examples, we present the analytic and
numerical solutions of $\epsilon$, $\eta$ and $\zeta$ as functions of the
number of e-fold... | [
{
"created": "Tue, 4 Dec 2018 09:08:10 GMT",
"version": "v1"
},
{
"created": "Thu, 16 May 2019 15:58:22 GMT",
"version": "v2"
}
] | 2019-05-29 | [
[
"Miranda",
"Tays",
""
],
[
"Escamilla-Rivera",
"Celia",
""
],
[
"Piattella",
"Oliver F.",
""
],
[
"Fabris",
"Júlio C.",
""
]
] | In this paper we establish \textit{formulae} for the inflationary slow-roll parameters $\epsilon$, $\eta$ and $\zeta$ as functions of the Ricci scalar $R$ for $f(R)$ theories of gravity. As examples, we present the analytic and numerical solutions of $\epsilon$, $\eta$ and $\zeta$ as functions of the number of e-folds ... |
gr-qc/0507135 | Filimonova Irina V | P.A. Saponov | Quantization of Physical Models and Non-Commutative Geometry | Plenary talk presented at Workshop on High Energy Physics&Field
Theory (Protvino, Russia, 2004) | null | null | HEPFT/2004/16 | gr-qc | null | Application of the noncommutative geometry to several physical models is
considered.
| [
{
"created": "Fri, 29 Jul 2005 10:02:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Saponov",
"P. A.",
""
]
] | Application of the noncommutative geometry to several physical models is considered. |
1412.5911 | Dr. Sudhaker Upadhyay | Sudhaker Upadhyay | The conformal gauge to the derivative gauge for worldsheet gravity | 7 pages, Revtex, Published in Phys. Lett. B. arXiv admin note: text
overlap with arXiv:hep-th/9404170 by other authors | Phys. Lett. B 740 (2015) 341-344 | 10.1016/j.physletb.2014.12.013 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The BRST quantizations of worldsheet gravity corresponding to final more
acceptable derivative gauge and the standard conformal gauge are studied. We
establish a mapping between these two gauges utilizing FFBRST formulation in
standard way. Therefore, we are able to declare that the problems associated
with Virasoro ... | [
{
"created": "Thu, 18 Dec 2014 15:57:55 GMT",
"version": "v1"
}
] | 2014-12-19 | [
[
"Upadhyay",
"Sudhaker",
""
]
] | The BRST quantizations of worldsheet gravity corresponding to final more acceptable derivative gauge and the standard conformal gauge are studied. We establish a mapping between these two gauges utilizing FFBRST formulation in standard way. Therefore, we are able to declare that the problems associated with Virasoro co... |
gr-qc/0511078 | Taxiarchis Papakostas | T. Papakostas | Rotating figures of equilibrium in General Relativity | 21 pages, research paper, submitted to "Classical and Quantum
Gravity" | null | null | null | gr-qc | null | A generalization of the notion of surfaces of revolution in the spaces of
General Relativity is presented. We apply this definition to the case of
Carter's family [A] of solutions and we study the Kerr's metric with respect
the above mentioned foliation.
| [
{
"created": "Tue, 15 Nov 2005 07:48:40 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Papakostas",
"T.",
""
]
] | A generalization of the notion of surfaces of revolution in the spaces of General Relativity is presented. We apply this definition to the case of Carter's family [A] of solutions and we study the Kerr's metric with respect the above mentioned foliation. |
2204.07242 | Lorenz Zwick | Lorenz Zwick, Deniz Soyuer, Jozef Bucko | Prospects for a local detection of dark matter with future missions to
Uranus and Neptune | Published by A&A | A&A 664, A188 (2022) | 10.1051/0004-6361/202243741 | null | gr-qc astro-ph.CO astro-ph.EP astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the possibility of detecting the gravitational influence of
dark matter (DM) on the trajectory of prospective Doppler ranging missions to
Uranus and Neptune. In addition, we estimate the constraints such a mission can
provide on modified and massive gravity theories via extra-precession
measurements us... | [
{
"created": "Thu, 14 Apr 2022 21:43:06 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Apr 2022 17:59:49 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Apr 2022 18:11:35 GMT",
"version": "v3"
}
] | 2022-08-31 | [
[
"Zwick",
"Lorenz",
""
],
[
"Soyuer",
"Deniz",
""
],
[
"Bucko",
"Jozef",
""
]
] | We investigate the possibility of detecting the gravitational influence of dark matter (DM) on the trajectory of prospective Doppler ranging missions to Uranus and Neptune. In addition, we estimate the constraints such a mission can provide on modified and massive gravity theories via extra-precession measurements usin... |
2206.14881 | Rudnei Ramos | L. N. Barboza, G. L. L. W. Levy, L. L. Graef and Rudnei O. Ramos | Constraining the Barbero-Immirzi parameter from the duration of
inflation in loop quantum cosmology | 19 pages, 5 figures. Replaced with version matching the published
one. Corrected some minor typos | Phys. Rev. D 106, 103535 (2022) | 10.1103/PhysRevD.106.103535 | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We revisit the predictions for the duration of the inflationary phase after
the bounce in loop quantum cosmology. We present our analysis for different
classes of inflationary potentials that include the monomial power-law chaotic
type of potentials, the Starobinsky and the Higgs-like symmetry breaking
potential with... | [
{
"created": "Wed, 29 Jun 2022 19:47:39 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Nov 2022 21:08:27 GMT",
"version": "v2"
},
{
"created": "Fri, 24 Feb 2023 19:43:49 GMT",
"version": "v3"
}
] | 2023-02-28 | [
[
"Barboza",
"L. N.",
""
],
[
"Levy",
"G. L. L. W.",
""
],
[
"Graef",
"L. L.",
""
],
[
"Ramos",
"Rudnei O.",
""
]
] | We revisit the predictions for the duration of the inflationary phase after the bounce in loop quantum cosmology. We present our analysis for different classes of inflationary potentials that include the monomial power-law chaotic type of potentials, the Starobinsky and the Higgs-like symmetry breaking potential with d... |
1611.07589 | Gerasimos Rigopoulos | Ian Moss and Gerasimos Rigopoulos | Effective long wavelength scalar dynamics in de Sitter | 25 pages, 2 figures; v2: small changes, matches published JCAP
version | null | 10.1088/1475-7516/2017/05/009 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the effective infrared theory governing a light scalar's long
wavelength dynamics in de Sitter spacetime. We show how the separation of
scales around the physical curvature radius $k/a \sim H$ can be performed
consistently with a window function and how short wavelengths can be integrated
out in the Schwin... | [
{
"created": "Wed, 23 Nov 2016 00:17:37 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Apr 2017 12:04:27 GMT",
"version": "v2"
}
] | 2017-05-10 | [
[
"Moss",
"Ian",
""
],
[
"Rigopoulos",
"Gerasimos",
""
]
] | We discuss the effective infrared theory governing a light scalar's long wavelength dynamics in de Sitter spacetime. We show how the separation of scales around the physical curvature radius $k/a \sim H$ can be performed consistently with a window function and how short wavelengths can be integrated out in the Schwinge... |
2004.08459 | V\'ictor Jaramillo | V\'ictor Jaramillo, Nicolas Sanchis-Gual, Juan Barranco, Argelia
Bernal, Juan Carlos Degollado, Carlos Herdeiro, Dar\'io N\'u\~nez | Dynamical $\ell$-boson stars: generic stability and evidence for
non-spherical solutions | 11 pages, 8 figures | Phys. Rev. D 101, 124020 (2020) | 10.1103/PhysRevD.101.124020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | $\ell$-boson stars are static, spherical, multi-field self-gravitating
solitons. They are asymptotically flat, finite energy solutions of Einstein's
gravity minimally coupled to an odd number of massive, complex scalar fields. A
previous study assessed the stability of $\ell$-boson stars under spherical
perturbations... | [
{
"created": "Fri, 17 Apr 2020 21:24:04 GMT",
"version": "v1"
}
] | 2020-07-01 | [
[
"Jaramillo",
"Víctor",
""
],
[
"Sanchis-Gual",
"Nicolas",
""
],
[
"Barranco",
"Juan",
""
],
[
"Bernal",
"Argelia",
""
],
[
"Degollado",
"Juan Carlos",
""
],
[
"Herdeiro",
"Carlos",
""
],
[
"Núñez",
"Darío",
... | $\ell$-boson stars are static, spherical, multi-field self-gravitating solitons. They are asymptotically flat, finite energy solutions of Einstein's gravity minimally coupled to an odd number of massive, complex scalar fields. A previous study assessed the stability of $\ell$-boson stars under spherical perturbations, ... |
0708.4367 | Stefano Foffa | P. Astone, D. Babusci, M. Bassan, P. Carelli, G. Cavallari, A.
Chincarini, E. Coccia, S. D'Antonio, M. Di Paolo Emilio, V. Fafone, S. Foffa,
G. Gemme, G. Giordano, M. Maggiore, A. Marini, Y. Minenkov, I. Modena, G.
Modestino, A. Moleti, G. P. Murtas, G. V. Pallottino, R. Parodi, G. Piano
Mortari, G. Pizzella, L... | All-sky incoherent search for periodic signals with Explorer 2005 data | 9 pages, 5 figures | Class.Quant.Grav.25:114028,2008 | 10.1088/0264-9381/25/11/114028 | null | gr-qc | null | The data collected during 2005 by the resonant bar Explorer are divided into
segments and incoherently summed in order to perform an all-sky search for
periodic gravitational wave signals. The parameter space of the search spanned
about 40 Hz in frequency, over 23927 positions in the sky. Neither source
orbital corre... | [
{
"created": "Fri, 31 Aug 2007 15:17:34 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Astone",
"P.",
""
],
[
"Babusci",
"D.",
""
],
[
"Bassan",
"M.",
""
],
[
"Carelli",
"P.",
""
],
[
"Cavallari",
"G.",
""
],
[
"Chincarini",
"A.",
""
],
[
"Coccia",
"E.",
""
],
[
"D'Antonio",
"S."... | The data collected during 2005 by the resonant bar Explorer are divided into segments and incoherently summed in order to perform an all-sky search for periodic gravitational wave signals. The parameter space of the search spanned about 40 Hz in frequency, over 23927 positions in the sky. Neither source orbital correct... |
1106.4375 | Subenoy Chakraborty | Nairwita Mazumder, Ritabrata Biswas, Subenoy Chakraborty | Quantum tunnelling for Hawking radiation from a dynamical Black Hole | modifications needed | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper deals with Hawking radiation related to non-static spherically
symmetric black hole. Quantum corrections are incorporated using
Hamilton-Jacobi method beyond semi-classical approximation. It is found that
different order correction terms satisfy identical differential equation as the
semiclassical action an... | [
{
"created": "Wed, 22 Jun 2011 05:44:53 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Sep 2012 17:22:24 GMT",
"version": "v2"
}
] | 2012-10-01 | [
[
"Mazumder",
"Nairwita",
""
],
[
"Biswas",
"Ritabrata",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | The paper deals with Hawking radiation related to non-static spherically symmetric black hole. Quantum corrections are incorporated using Hamilton-Jacobi method beyond semi-classical approximation. It is found that different order correction terms satisfy identical differential equation as the semiclassical action and ... |
1602.08688 | Jinsong Yang | Jinsong Yang, Yongge Ma | New volume and inverse volume operators for loop quantum gravity | 14 pages, 1 figure; version published in PRD | Phys. Rev. D 94, 044003 (2016) | 10.1103/PhysRevD.94.044003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new alternative volume operator is constructed for loop quantum gravity by
using the so-called cotriad operators as building blocks. It is shown that the
new volume operator shares the same qualitative properties with the standard
volume operator. Moreover, a new alternative inverse volume operator is also
construc... | [
{
"created": "Sun, 28 Feb 2016 09:34:24 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Aug 2016 10:44:20 GMT",
"version": "v2"
}
] | 2016-08-04 | [
[
"Yang",
"Jinsong",
""
],
[
"Ma",
"Yongge",
""
]
] | A new alternative volume operator is constructed for loop quantum gravity by using the so-called cotriad operators as building blocks. It is shown that the new volume operator shares the same qualitative properties with the standard volume operator. Moreover, a new alternative inverse volume operator is also constructe... |
gr-qc/0511043 | Lorenzo Iorio | Lorenzo Iorio | Spin precession in the Dvali-Gabadadze-Porrati braneworld scenario | Latex, 5 pages, no figures, no tables, 10 references | Int.J.Mod.Phys. D15 (2006) 469-472 | 10.1142/S0218271806008188 | null | gr-qc astro-ph hep-ph | null | In this letter we work out the secular precession of the spin of a gyroscope
in geodesic motion around a central mass in the framework of the
Dvali-Gabadadze-Porrati multidimensional gravity model. Such an effect, which
depends on the mass of the central body and on the orbit radius of the
gyroscope, contrary to the ... | [
{
"created": "Tue, 8 Nov 2005 22:00:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Iorio",
"Lorenzo",
""
]
] | In this letter we work out the secular precession of the spin of a gyroscope in geodesic motion around a central mass in the framework of the Dvali-Gabadadze-Porrati multidimensional gravity model. Such an effect, which depends on the mass of the central body and on the orbit radius of the gyroscope, contrary to the pr... |
gr-qc/9910038 | Kohkichi Konno | K. Konno, T. Obata, Y. Kojima | Deformation of relativistic magnetized stars | 7 pages, 4 figures, accepted for publication in Astronomy and
Astrophysics | Astron.Astrophys.352:211-216,1999 | null | null | gr-qc astro-ph | null | We formulate deformation of relativistic stars due to the magnetic stress,
considering the magnetic fields to be perturbations from spherical stars. The
ellipticity for the dipole magnetic field is calculated for some stellar
models. We have found that the ellipticity becomes large with increase of a
relativistic fac... | [
{
"created": "Tue, 12 Oct 1999 05:24:41 GMT",
"version": "v1"
}
] | 2011-05-23 | [
[
"Konno",
"K.",
""
],
[
"Obata",
"T.",
""
],
[
"Kojima",
"Y.",
""
]
] | We formulate deformation of relativistic stars due to the magnetic stress, considering the magnetic fields to be perturbations from spherical stars. The ellipticity for the dipole magnetic field is calculated for some stellar models. We have found that the ellipticity becomes large with increase of a relativistic facto... |
gr-qc/0012033 | Valentin D. Gladush | V.D. Gladush | The quasi-classical model of the spherical configuration in general
relativity | 22 pages, sprocl.sty, 3 figures | Int.J.Mod.Phys. D11 (2002) 367-390 | 10.1142/S0218271802001846 | null | gr-qc hep-th | null | We consider the quasi-classical model of the spin-free configuration on the
basis of the self-gravitating spherical dust shell in General Relativity. For
determination of the energy spectrum of the stationary states on the basis of
quasi-classical quantization rules it is required to carry out some
regularization of ... | [
{
"created": "Fri, 8 Dec 2000 15:33:18 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Gladush",
"V. D.",
""
]
] | We consider the quasi-classical model of the spin-free configuration on the basis of the self-gravitating spherical dust shell in General Relativity. For determination of the energy spectrum of the stationary states on the basis of quasi-classical quantization rules it is required to carry out some regularization of th... |
1912.08811 | Fay\c{c}al Hammad | F. Hammad, D. Dijamco, A. Torres-Rivas and D. B\'erub\'e | Noether charge and black hole entropy in teleparallel gravity | 11 pages; no figures; matches published version | Phys. Rev. D 100, 124040 (2019) | 10.1103/PhysRevD.100.124040 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Noether charge associated to diffeomorphism invariance in teleparallel
gravity is derived. It is shown that the latter yields the ADM mass of an
asymptotically flat spacetime. The black hole entropy is then investigated
based on Wald's prescription that relies on the Noether charge. It is shown
that, like in gene... | [
{
"created": "Thu, 19 Dec 2019 02:45:41 GMT",
"version": "v1"
}
] | 2020-01-08 | [
[
"Hammad",
"F.",
""
],
[
"Dijamco",
"D.",
""
],
[
"Torres-Rivas",
"A.",
""
],
[
"Bérubé",
"D.",
""
]
] | The Noether charge associated to diffeomorphism invariance in teleparallel gravity is derived. It is shown that the latter yields the ADM mass of an asymptotically flat spacetime. The black hole entropy is then investigated based on Wald's prescription that relies on the Noether charge. It is shown that, like in genera... |
1708.05674 | Carlos A. R. Herdeiro | Carlos A. R. Herdeiro, Alexandre M. Pombo, Eugen Radu | Asymptotically flat scalar, Dirac and Proca stars: discrete vs.
continuous families of solutions | 14 pages, 4 figures | null | 10.1016/j.physletb.2017.09.036 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of localized, approximately stationary, lumps of the classical
gravitational and electromagnetic field -- $geons$ -- was conjectured more than
half a century ago. If one insists on exact stationarity, topologically trivial
configurations in electro-vacuum are ruled out by no-go theorems for solitons.
Bu... | [
{
"created": "Fri, 18 Aug 2017 16:07:16 GMT",
"version": "v1"
}
] | 2017-10-11 | [
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Pombo",
"Alexandre M.",
""
],
[
"Radu",
"Eugen",
""
]
] | The existence of localized, approximately stationary, lumps of the classical gravitational and electromagnetic field -- $geons$ -- was conjectured more than half a century ago. If one insists on exact stationarity, topologically trivial configurations in electro-vacuum are ruled out by no-go theorems for solitons. But ... |
1904.02035 | Filip Hejda | F. Hejda, J. Bi\v{c}\'ak, O. B. Zaslavskii | Extraction of energy from an extremal rotating electrovacuum black hole:
Particle collisions along the axis of symmetry | One reference added and adjustments made to fit the journal version;
also included TOC for easier navigation | Phys. Rev. D 100, 064041 (2019) | 10.1103/PhysRevD.100.064041 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | High-energy collisions can occur for radially moving charged test particles
in the extremal Reissner-Nordstr\"om spacetime if one of the particles is
fine-tuned and the collision point is taken close to the horizon. This is an
analogy of the Banados-Silk-West (BSW) effect, first described for extremal
Kerr black hole... | [
{
"created": "Wed, 3 Apr 2019 14:45:31 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Oct 2019 15:10:12 GMT",
"version": "v2"
}
] | 2019-10-16 | [
[
"Hejda",
"F.",
""
],
[
"Bičák",
"J.",
""
],
[
"Zaslavskii",
"O. B.",
""
]
] | High-energy collisions can occur for radially moving charged test particles in the extremal Reissner-Nordstr\"om spacetime if one of the particles is fine-tuned and the collision point is taken close to the horizon. This is an analogy of the Banados-Silk-West (BSW) effect, first described for extremal Kerr black holes.... |
2109.11645 | Nils Deppe | Nils Deppe, Fran\c{c}ois H\'ebert, Lawrence E. Kidder, Saul A.
Teukolsky | A high-order shock capturing discontinuous Galerkin-finite-difference
hybrid method for GRMHD | Matches published version (sorry for delay reposting). 45 pages, 14
figures. Showed 2 more Riemann problems, added rotating NS test | null | 10.1088/1361-6382/ac8864 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We present a discontinuous Galerkin-finite-difference hybrid scheme that
allows high-order shock capturing with the discontinuous Galerkin method for
general relativistic magnetohydrodynamics. The hybrid method is conceptually
quite simple. An unlimited discontinuous Galerkin candidate solution is
computed for the ne... | [
{
"created": "Thu, 23 Sep 2021 20:54:28 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jan 2024 17:17:47 GMT",
"version": "v2"
}
] | 2024-01-17 | [
[
"Deppe",
"Nils",
""
],
[
"Hébert",
"François",
""
],
[
"Kidder",
"Lawrence E.",
""
],
[
"Teukolsky",
"Saul A.",
""
]
] | We present a discontinuous Galerkin-finite-difference hybrid scheme that allows high-order shock capturing with the discontinuous Galerkin method for general relativistic magnetohydrodynamics. The hybrid method is conceptually quite simple. An unlimited discontinuous Galerkin candidate solution is computed for the next... |
gr-qc/0106084 | Alejandro Corichi | Alejandro Corichi, Ulises Nucamendi and Daniel Sudarsky | A Mass Formula for EYM Solitons | 8 pages, 1 table, no figures. Revtex file. Revised file. Added
references | Phys.Rev. D64 (2001) 107501 | 10.1103/PhysRevD.64.107501 | ICN-UNAM-01-13 | gr-qc hep-th | null | The Isolated Horizon formalism, together with a simple phenomenological model
for colored black holes was recently used to predict a formula for the ADM mass
of the solitons of the EYM system in terms of horizon properties of black holes
{\it for all} values of the horizon area. In this note, this formula is tested
n... | [
{
"created": "Tue, 26 Jun 2001 21:43:44 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Jul 2001 17:16:43 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Corichi",
"Alejandro",
""
],
[
"Nucamendi",
"Ulises",
""
],
[
"Sudarsky",
"Daniel",
""
]
] | The Isolated Horizon formalism, together with a simple phenomenological model for colored black holes was recently used to predict a formula for the ADM mass of the solitons of the EYM system in terms of horizon properties of black holes {\it for all} values of the horizon area. In this note, this formula is tested num... |
1707.07757 | Abel Camacho Mr. | Sergio Guti\'errez, Abel Camacho, H\'ector Hern\'andez | String theory phenomenology and quantum many body systems | 6 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The main idea in the present work is the definition of an experimental
proposal for the detection of the number of extra{compact dimensions contained
as a core feature in String Theory. This goal will be achieved as a consequence
of the fact that the density of states of a bosonic gas does depend upon the
number and ... | [
{
"created": "Mon, 24 Jul 2017 21:51:19 GMT",
"version": "v1"
}
] | 2017-07-26 | [
[
"Gutiérrez",
"Sergio",
""
],
[
"Camacho",
"Abel",
""
],
[
"Hernández",
"Héctor",
""
]
] | The main idea in the present work is the definition of an experimental proposal for the detection of the number of extra{compact dimensions contained as a core feature in String Theory. This goal will be achieved as a consequence of the fact that the density of states of a bosonic gas does depend upon the number and ge... |
gr-qc/0309116 | Tatyana P. Shestakova | T. P. Shestakova | Could gauge gravitational degrees of freedom play the role of
environment in "extended phase space" version of quantum geometrodynamics? | 12 pages, no figures, talk presented at the International Conference
"Physical Interpretations of Relativity Theory" (Bauman University, Moscow,
June - July 2003) | in: Physical Interpretation of Relativity Theory: Proceedings of
International Meeting (Moscow, 30 June - 3 July 2003), eds by M. C. Duffy, V.
O. Gladyshev and A. N. Morozov, Moscow, Liverpool, Sunderland, 2003, P. 350 -
358 | null | null | gr-qc | null | In the context of the recently proposed formulation of quantum
geometrodynamics in extended phase space we discuss the problem how the
behavior of the Universe, initially managed by quantum laws, has become
classical. In this version of quantum geometrodynamics we quantize gauge
gravitational degrees of freedom on an... | [
{
"created": "Wed, 24 Sep 2003 09:23:50 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Shestakova",
"T. P.",
""
]
] | In the context of the recently proposed formulation of quantum geometrodynamics in extended phase space we discuss the problem how the behavior of the Universe, initially managed by quantum laws, has become classical. In this version of quantum geometrodynamics we quantize gauge gravitational degrees of freedom on an e... |
2001.07350 | Sandeep Aashish | Sandeep Aashish and Sukanta Panda | Covariant quantum corrections to a scalar field model inspired by
nonminimal natural inflation | 29 pages; minor corrections, references added; to appear in JCAP | JCAP06(2020)009 | 10.1088/1475-7516/2020/06/009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the covariant one-loop quantum gravitational effective action
for a scalar field model inspired by the recently proposed nonminimal natural
inflation model. Our calculation is perturbative, in the sense that the
effective action is evaluated in orders of background field, around a Minkowski
background. T... | [
{
"created": "Tue, 21 Jan 2020 05:58:04 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Jun 2020 04:20:19 GMT",
"version": "v2"
}
] | 2020-06-11 | [
[
"Aashish",
"Sandeep",
""
],
[
"Panda",
"Sukanta",
""
]
] | We calculate the covariant one-loop quantum gravitational effective action for a scalar field model inspired by the recently proposed nonminimal natural inflation model. Our calculation is perturbative, in the sense that the effective action is evaluated in orders of background field, around a Minkowski background. The... |
2205.10229 | Armand Coudray | Armand Coudray | Peeling-off behaviour of the wave equation on the Vaidya spacetime | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study the peeling for the wave equation on the Vaidya spacetime following
the approach developed by Mason and Nicolas in Mason-Nicolas 2009. The idea is
to encode the regularity at null infinity of the rescaled field, characterised
by Sobolev-type norms, in terms of corresponding function spaces of initial
data. A... | [
{
"created": "Fri, 20 May 2022 15:01:19 GMT",
"version": "v1"
}
] | 2022-05-23 | [
[
"Coudray",
"Armand",
""
]
] | We study the peeling for the wave equation on the Vaidya spacetime following the approach developed by Mason and Nicolas in Mason-Nicolas 2009. The idea is to encode the regularity at null infinity of the rescaled field, characterised by Sobolev-type norms, in terms of corresponding function spaces of initial data. All... |
1903.05860 | Orlando Luongo | Orlando Luongo, Stefano Mancini | Entanglement in model independent cosmological scenario | 17 pages, 6 figures | Int. J. Geom. Meth. Mod. Phys., Vol. 16, No. 08, 1950114 (2019) | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a \emph{model-independent} approach to study entanglement creation
due to the dynamics between two asymptotic quantum regimes in the framework of
homogeneous and isotropic universe. We realize it by Pad\'e expansion to
reconstruct the functional form of scale factor, rather than postulating it a
priori.Thi... | [
{
"created": "Thu, 14 Mar 2019 08:55:03 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Sep 2019 14:39:38 GMT",
"version": "v2"
}
] | 2019-09-25 | [
[
"Luongo",
"Orlando",
""
],
[
"Mancini",
"Stefano",
""
]
] | We propose a \emph{model-independent} approach to study entanglement creation due to the dynamics between two asymptotic quantum regimes in the framework of homogeneous and isotropic universe. We realize it by Pad\'e expansion to reconstruct the functional form of scale factor, rather than postulating it a priori.This ... |
2205.08550 | Laura Sberna | Laura Sberna, Stanislav Babak, Sylvain Marsat, Andrea Caputo, Giulia
Cusin, Alexandre Toubiana, Enrico Barausse, Chiara Caprini, Tito Dal Canton,
Alberto Sesana, Nicola Tamanini | Observing GW190521-like binary black holes and their environment with
LISA | 13+4 pages, 7+1 figures v3: corrected typo in Fig 5 | null | 10.1103/PhysRevD.106.064056 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Binaries of relatively massive black holes like GW190521 have been proposed
to form in dense gas environments, such as the disks of Active Galactic Nuclei
(AGNs), and they might be associated with transient electromagnetic
counterparts. The interactions of this putative environment with the binary
could leave a signi... | [
{
"created": "Tue, 17 May 2022 18:00:02 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Oct 2022 15:52:55 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Nov 2022 15:07:54 GMT",
"version": "v3"
}
] | 2022-11-14 | [
[
"Sberna",
"Laura",
""
],
[
"Babak",
"Stanislav",
""
],
[
"Marsat",
"Sylvain",
""
],
[
"Caputo",
"Andrea",
""
],
[
"Cusin",
"Giulia",
""
],
[
"Toubiana",
"Alexandre",
""
],
[
"Barausse",
"Enrico",
""
],
... | Binaries of relatively massive black holes like GW190521 have been proposed to form in dense gas environments, such as the disks of Active Galactic Nuclei (AGNs), and they might be associated with transient electromagnetic counterparts. The interactions of this putative environment with the binary could leave a signifi... |
2305.05844 | Thomas Ng | Thomas C. K. Ng, Maximiliano Isi, Kaze W. K. Wong and Will M. Farr | Constraining gravitational wave amplitude birefringence with GWTC-3 | null | Phys. Rev. D 108, 084068 (2023) | 10.1103/PhysRevD.108.084068 | LIGO-P2300115 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The propagation of gravitational waves can reveal fundamental features of the
structure of spacetime. For instance, differences in the propagation of
gravitational-wave polarizations would be a smoking gun for parity violations
in the gravitational sector, as expected from birefringent theories like
Chern-Simons grav... | [
{
"created": "Wed, 10 May 2023 02:31:10 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Oct 2023 18:08:45 GMT",
"version": "v2"
}
] | 2023-11-01 | [
[
"Ng",
"Thomas C. K.",
""
],
[
"Isi",
"Maximiliano",
""
],
[
"Wong",
"Kaze W. K.",
""
],
[
"Farr",
"Will M.",
""
]
] | The propagation of gravitational waves can reveal fundamental features of the structure of spacetime. For instance, differences in the propagation of gravitational-wave polarizations would be a smoking gun for parity violations in the gravitational sector, as expected from birefringent theories like Chern-Simons gravit... |
gr-qc/0612138 | Tim Koslowski A | Tim Koslowski | Reduction of a Quantum Theory | 48 pages, no figures, LaTeX | null | null | null | gr-qc | null | This paper serves as a preparation of work that focuses on extracting
cosmological sectors from Loop Quantum Gravity. We start with studying the
extraction of subsystems from classical systems. A classical Hamiltonian system
can be reduced to a subsystem of ''relevant observables'' using the pull-back
under the Poiss... | [
{
"created": "Thu, 21 Dec 2006 18:41:06 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Koslowski",
"Tim",
""
]
] | This paper serves as a preparation of work that focuses on extracting cosmological sectors from Loop Quantum Gravity. We start with studying the extraction of subsystems from classical systems. A classical Hamiltonian system can be reduced to a subsystem of ''relevant observables'' using the pull-back under the Poisson... |
1711.07502 | Tommi Markkanen | Tommi Markkanen | Light scalars on cosmological backgrounds | 16 pages, 1 figure. v2: 18 pages with expanded discussion, improved
structure and updated references. v3: several improvements and updated
references, to be published in JHEP | JHEP01(2018)116 | 10.1007/JHEP01(2018)116 | IMPERIAL/TP/2017/TM/01, KCL-PH-TH/2017-53 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the behaviour of a light quartically self-interacting scalar field
$\phi$ on curved backgrounds that may be described with the cosmological
equation state parameter $w$. At leading order in the non-perturbative 2PI
expansion we find a general formula for the variance
$\langle\hat{\phi}^2\rangle$ and show for... | [
{
"created": "Mon, 20 Nov 2017 19:06:42 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Nov 2017 12:45:31 GMT",
"version": "v2"
},
{
"created": "Mon, 15 Jan 2018 19:06:06 GMT",
"version": "v3"
}
] | 2018-01-29 | [
[
"Markkanen",
"Tommi",
""
]
] | We study the behaviour of a light quartically self-interacting scalar field $\phi$ on curved backgrounds that may be described with the cosmological equation state parameter $w$. At leading order in the non-perturbative 2PI expansion we find a general formula for the variance $\langle\hat{\phi}^2\rangle$ and show for s... |
1712.09729 | Remo Garattini | Remo Garattini | Gravity's Rainbow and Black Hole Entropy | 6 pages. Prepared for the Proceedings of the Karl Schwarzschild
meeting 2017 | null | 10.1088/1742-6596/942/1/012011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the effects of Gravity's Rainbow on the computation of black hole
entropy using a dynamical brick wall model. An explicit dependence of the
radial coordinate approaching the horizon is proposed to analyze the behavior
of the divergence. We find that, due to the modification of the density of
states, the b... | [
{
"created": "Sun, 24 Dec 2017 19:01:51 GMT",
"version": "v1"
}
] | 2018-01-17 | [
[
"Garattini",
"Remo",
""
]
] | We consider the effects of Gravity's Rainbow on the computation of black hole entropy using a dynamical brick wall model. An explicit dependence of the radial coordinate approaching the horizon is proposed to analyze the behavior of the divergence. We find that, due to the modification of the density of states, the bri... |
gr-qc/9910086 | Ulrich H. Gerlach | Francis J. Alexander and Ulrich H. Gerlach | Coulomb field of an accelerated charge: physical and mathematical
aspects | 27 pages, PlainTex. Related papers available at
http://www.math.ohio-state.edu/~gerlach | Phys.Rev. D44 (1991) 3887-3898 | 10.1103/PhysRevD.44.3887 | null | gr-qc | null | The Maxwell field equations relative to a uniformly accelerated frame, and
the variational principle from which they are obtained, are formulated in terms
of the technique of geometrical gauge invariant potentials. They refer to the
transverse magnetic (TM) and the transeverse electric (TE) modes. This gauge
invarian... | [
{
"created": "Mon, 25 Oct 1999 16:35:05 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Alexander",
"Francis J.",
""
],
[
"Gerlach",
"Ulrich H.",
""
]
] | The Maxwell field equations relative to a uniformly accelerated frame, and the variational principle from which they are obtained, are formulated in terms of the technique of geometrical gauge invariant potentials. They refer to the transverse magnetic (TM) and the transeverse electric (TE) modes. This gauge invariant ... |
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