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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2204.05473 | Umananda Dev Goswami | Jyatsnasree Bora, Dhruba Jyoti Gogoi and Umananda Dev Goswami | Strange stars in $f(\mathcal{R})$ gravity Palatini formalism and
gravitational wave echoes from them | 22 pages, 9 figures | JCAP 09, 057 (2022) | 10.1088/1475-7516/2022/09/057 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The compact stars are promising candidates associated with the generation of
gravitational waves (GWs). In this work, we study a special type of compact
stars known as strange stars in the $f(\mathcal{R})$ gravity Palatini
formalism. Here we consider three promising $f(\mathcal{R})$ gravity models
viz., Starobinsky, ... | [
{
"created": "Tue, 12 Apr 2022 01:51:05 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Sep 2022 07:08:15 GMT",
"version": "v2"
}
] | 2022-09-23 | [
[
"Bora",
"Jyatsnasree",
""
],
[
"Gogoi",
"Dhruba Jyoti",
""
],
[
"Goswami",
"Umananda Dev",
""
]
] | The compact stars are promising candidates associated with the generation of gravitational waves (GWs). In this work, we study a special type of compact stars known as strange stars in the $f(\mathcal{R})$ gravity Palatini formalism. Here we consider three promising $f(\mathcal{R})$ gravity models viz., Starobinsky, Hu... |
1812.00314 | Huan-Hsin Tseng | Huan-Hsin Tseng | Gravitational Theories with Torsion | Doctoral Dissertation, National Tsing Hua University. 84 pages, 7
figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We give a complete formulation of Poincare gauge theory, starting from the
fibre bundle formulation to the resultant Riemann-Cartan spacetime. We also
introduce several diverse gravity theories descendent from the Poincare gauge
theory. Especially, the cosmological effect of the simple scalar-torsion (0^+)
mode in Po... | [
{
"created": "Sun, 2 Dec 2018 03:25:27 GMT",
"version": "v1"
}
] | 2018-12-04 | [
[
"Tseng",
"Huan-Hsin",
""
]
] | We give a complete formulation of Poincare gauge theory, starting from the fibre bundle formulation to the resultant Riemann-Cartan spacetime. We also introduce several diverse gravity theories descendent from the Poincare gauge theory. Especially, the cosmological effect of the simple scalar-torsion (0^+) mode in Poin... |
2101.09771 | Giampiero Esposito Dr. | Donato Bini, Giampiero Esposito | Investigating new forms of gravity-matter couplings in the gravitational
field equations | 3 figures, Revtex4 | Phys. Rev. D 103, 064030 (2021) | 10.1103/PhysRevD.103.064030 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper proposes a toy model where, in the Einstein equations, the
right-hand side is modified by the addition of a term proportional to the
symmetrized partial contraction of the Ricci tensor with the energy-momentum
tensor, while the left-hand side remains equal to the Einstein tensor. Bearing
in mind the existe... | [
{
"created": "Sun, 24 Jan 2021 18:49:32 GMT",
"version": "v1"
}
] | 2021-03-24 | [
[
"Bini",
"Donato",
""
],
[
"Esposito",
"Giampiero",
""
]
] | This paper proposes a toy model where, in the Einstein equations, the right-hand side is modified by the addition of a term proportional to the symmetrized partial contraction of the Ricci tensor with the energy-momentum tensor, while the left-hand side remains equal to the Einstein tensor. Bearing in mind the existenc... |
0903.2290 | Gavin Polhemus | Gavin Polhemus, Andrew J. S. Hamilton, Colin S. Wallace | Entropy creation inside black holes points to observer complementarity | 13 pages. This is a companion paper to arXiv:0801.4415; Added
references | JHEP 0909:016,2009 | 10.1088/1126-6708/2009/09/016 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Heating processes inside large black holes can produce tremendous amounts of
entropy. Locality requires that this entropy adds on space-like surfaces, but
the resulting entropy (10^10 times the Bekenstein-Hawking entropy in an example
presented in the companion paper) exceeds the maximum entropy that can be
accommoda... | [
{
"created": "Thu, 12 Mar 2009 23:27:54 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Mar 2009 22:22:48 GMT",
"version": "v2"
}
] | 2009-09-28 | [
[
"Polhemus",
"Gavin",
""
],
[
"Hamilton",
"Andrew J. S.",
""
],
[
"Wallace",
"Colin S.",
""
]
] | Heating processes inside large black holes can produce tremendous amounts of entropy. Locality requires that this entropy adds on space-like surfaces, but the resulting entropy (10^10 times the Bekenstein-Hawking entropy in an example presented in the companion paper) exceeds the maximum entropy that can be accommodate... |
gr-qc/0604064 | Brandon Carter | Brandon Carter | Half century of black-hole theory: from physicists' purgatory to
mathematicians' paradise | 30 pages latex. Contrib. to Encuentros Relativistas Espanoles: A
Century of Relativity Theory, Oviedo, 2005 (ed. L. Mornas) | null | 10.1063/1.2218167 | null | gr-qc | null | Although implicit in the discovery of the Schwarzschild solution 40 years
earlier, the issues raised by the theory of what are now known as black holes
were so unsettling to physicists of Einstein's generation that the subject
remained in a state of semiclandestine gestation until his demise. That turning
point -- ju... | [
{
"created": "Sat, 15 Apr 2006 10:34:56 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Carter",
"Brandon",
""
]
] | Although implicit in the discovery of the Schwarzschild solution 40 years earlier, the issues raised by the theory of what are now known as black holes were so unsettling to physicists of Einstein's generation that the subject remained in a state of semiclandestine gestation until his demise. That turning point -- just... |
1507.03265 | Amare Abebe | Amare Abebe, Davood Momeni and Ratbay Myrzakulov | Shear-free Anisotropic Cosmological Models in f(R) Gravity | 18 pages, 4 figures, comments and references added to match accepted
version; to appear in General Relativity and Gravitation | Gen Relativ Gravit (2016) 48:49 | 10.1007/s10714-016-2046-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a class of shear-free, homogeneous but anisotropic cosmological
models with imperfect matter sources in the context of f(R) gravity. We show
that the anisotropic stresses are related to the electric part of the Weyl
tensor in such a way that they balance each other. We also show that within the
class of orth... | [
{
"created": "Sun, 12 Jul 2015 20:10:12 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Mar 2016 22:29:49 GMT",
"version": "v2"
}
] | 2016-04-01 | [
[
"Abebe",
"Amare",
""
],
[
"Momeni",
"Davood",
""
],
[
"Myrzakulov",
"Ratbay",
""
]
] | We study a class of shear-free, homogeneous but anisotropic cosmological models with imperfect matter sources in the context of f(R) gravity. We show that the anisotropic stresses are related to the electric part of the Weyl tensor in such a way that they balance each other. We also show that within the class of orthog... |
1707.02299 | Matthew Lippert | Steven L. Liebling, Michael Kavic, and Matthew Lippert | Probing Near-Horizon Fluctuations with Black Hole Binary Mergers | 7 pages, 6 figures; v2: published version | JHEP 1803 (2018) 176 | 10.1007/JHEP03(2018)176 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The strong version of the nonviolent nonlocality proposal of Giddings
predicts "strong but soft" quantum metric fluctuations near black hole horizons
in an attempt to resolve the information paradox. To study observable
signatures of this proposal, we numerically solve Einstein's equations modified
by these fluctuati... | [
{
"created": "Fri, 7 Jul 2017 18:00:00 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Apr 2018 19:02:00 GMT",
"version": "v2"
}
] | 2020-05-20 | [
[
"Liebling",
"Steven L.",
""
],
[
"Kavic",
"Michael",
""
],
[
"Lippert",
"Matthew",
""
]
] | The strong version of the nonviolent nonlocality proposal of Giddings predicts "strong but soft" quantum metric fluctuations near black hole horizons in an attempt to resolve the information paradox. To study observable signatures of this proposal, we numerically solve Einstein's equations modified by these fluctuation... |
gr-qc/0002077 | Richard Price | Zeferino Andrade and Richard H. Price | Shell sources as a probe of relativistic effects in neutron star models | 16 pages LaTeX with 6 eps figures; submitted to Phys. Rev. D | Phys.Rev. D62 (2000) 044032 | 10.1103/PhysRevD.62.044032 | null | gr-qc | null | A perturbing shell is introduced as a device for studying the excitation of
fluid motions in relativistic stellar models. We show that this approach allows
a reasonably clean separation of radiation from the shell and from fluid
motions in the star, and provides broad flexibility in the location and
timescale of pert... | [
{
"created": "Tue, 22 Feb 2000 23:07:29 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Apr 2000 19:00:40 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Andrade",
"Zeferino",
""
],
[
"Price",
"Richard H.",
""
]
] | A perturbing shell is introduced as a device for studying the excitation of fluid motions in relativistic stellar models. We show that this approach allows a reasonably clean separation of radiation from the shell and from fluid motions in the star, and provides broad flexibility in the location and timescale of pertur... |
gr-qc/9810049 | Inyong Cho | Inyong Cho and Alexander Vilenkin | Gravitational field of vacuumless defects | 19 pages, REVTeX, 6 Postscript figures | Phys. Rev. D 59, 063510 (1999) | 10.1103/PhysRevD.59.063510 | null | gr-qc astro-ph hep-ph hep-th | null | It has been recently shown that topological defects can arise in symmetry
breaking models where the scalar field potential $V(\phi)$ has no minima and is
a monotonically decreasing function of $|\phi|$. Here we study the
gravitational fields produced by such vacuumless defects in the cases of both
global and gauge sy... | [
{
"created": "Thu, 15 Oct 1998 00:14:02 GMT",
"version": "v1"
}
] | 2016-08-25 | [
[
"Cho",
"Inyong",
""
],
[
"Vilenkin",
"Alexander",
""
]
] | It has been recently shown that topological defects can arise in symmetry breaking models where the scalar field potential $V(\phi)$ has no minima and is a monotonically decreasing function of $|\phi|$. Here we study the gravitational fields produced by such vacuumless defects in the cases of both global and gauge symm... |
gr-qc/0312024 | Robert Bock | Robert Davis Bock | Local Scale Invariance and General Relativity | References Added | Int.J.Theor.Phys. 42 (2003) 1835-1847 | null | null | gr-qc | null | According to the theory of unimodular relativity developed by Anderson and
Finkelstein, the equations of general relativity with a cosmological constant
are composed of two independent equations, one which determines the null-cone
structure of space-time, another which determines the measure structure of
space-time. ... | [
{
"created": "Thu, 4 Dec 2003 03:30:51 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Dec 2003 18:13:38 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Bock",
"Robert Davis",
""
]
] | According to the theory of unimodular relativity developed by Anderson and Finkelstein, the equations of general relativity with a cosmological constant are composed of two independent equations, one which determines the null-cone structure of space-time, another which determines the measure structure of space-time. Th... |
2404.19213 | Xiao Zhang | Hequn Zhang, Xiao Zhang | Nonexistence of Majorana fermions in Kerr-Newman type spacetimes with
nontrivial charge | 8 pages | null | null | null | gr-qc hep-th math.DG | http://creativecommons.org/publicdomain/zero/1.0/ | In this short paper, we study Majorana fermions in terms of a modified
Chandrasekhar's separation for the Dirac equation in Kerr-Newman-type
spacetimes. If the electric charge or magnetic charge is nonzero, we show that
nontrivial differentiable time-periodic Majorana fermions do not exist outside
the event horizon i... | [
{
"created": "Tue, 30 Apr 2024 02:29:38 GMT",
"version": "v1"
}
] | 2024-05-01 | [
[
"Zhang",
"Hequn",
""
],
[
"Zhang",
"Xiao",
""
]
] | In this short paper, we study Majorana fermions in terms of a modified Chandrasekhar's separation for the Dirac equation in Kerr-Newman-type spacetimes. If the electric charge or magnetic charge is nonzero, we show that nontrivial differentiable time-periodic Majorana fermions do not exist outside the event horizon in ... |
1610.07979 | Mauricio Bellini | Mauricio Bellini (IFIMAR - CONICET and UNMdP) | Pre-inflation: origin of the Universe from a topological phase
transition | version accepted in Phys. Lett. B | null | 10.1016/j.physletb.2017.05.049 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I study a model which describes the birth of the universe using a global
topological phase transition with a complex manifold where the time, $\tau$, is
considered as a complex variable. Before the big bang $\tau$ is a purely
imaginary variable so that the space can be considered as Euclidean. The phase
transition fr... | [
{
"created": "Tue, 25 Oct 2016 17:31:08 GMT",
"version": "v1"
},
{
"created": "Wed, 17 May 2017 20:14:37 GMT",
"version": "v2"
}
] | 2017-05-24 | [
[
"Bellini",
"Mauricio",
"",
"IFIMAR - CONICET and UNMdP"
]
] | I study a model which describes the birth of the universe using a global topological phase transition with a complex manifold where the time, $\tau$, is considered as a complex variable. Before the big bang $\tau$ is a purely imaginary variable so that the space can be considered as Euclidean. The phase transition from... |
gr-qc/9606091 | Thomas Thiemann | T. Thiemann | Closed formula for the matrix elements of the volume operator in
canonical quantum gravity | 27 pages, Latex | J.Math.Phys. 39 (1998) 3347-3371 | 10.1063/1.532259 | HUTMP-96/B-353 | gr-qc | null | We derive a closed formula for the matrix elements of the volume operator for
canonical Lorentzian quantum gravity in four spacetime dimensions in the
continuum in a spin-network basis. We also display a new technique of
regularization which is state dependent but we are forced to it in order to
maintain diffeomorphi... | [
{
"created": "Sat, 29 Jun 1996 23:29:28 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Thiemann",
"T.",
""
]
] | We derive a closed formula for the matrix elements of the volume operator for canonical Lorentzian quantum gravity in four spacetime dimensions in the continuum in a spin-network basis. We also display a new technique of regularization which is state dependent but we are forced to it in order to maintain diffeomorphism... |
1407.7463 | Igor Tanatarov | I.V. Tanatarov and O.B. Zaslavskii | Banados-Silk-West effect with nongeodesic particles: Nonextremal
horizons | v2 matches the published version; revtex4, 11 pages | Phys. Rev. D 90, 067502 (2014) | 10.1103/PhysRevD.90.067502 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | When two particles collide near a black hole, the energy in their center of
mass frame can, under certain conditions, grow unbounded. This is the
Banados-Silk-West effect. We show that this effect retains its validity even if
some force acts on a particle, provided some reasonable and weak restrictions
are imposed on... | [
{
"created": "Mon, 28 Jul 2014 16:21:34 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Sep 2014 21:13:47 GMT",
"version": "v2"
}
] | 2014-09-08 | [
[
"Tanatarov",
"I. V.",
""
],
[
"Zaslavskii",
"O. B.",
""
]
] | When two particles collide near a black hole, the energy in their center of mass frame can, under certain conditions, grow unbounded. This is the Banados-Silk-West effect. We show that this effect retains its validity even if some force acts on a particle, provided some reasonable and weak restrictions are imposed on t... |
2012.07075 | Adamantia Zampeli | Andronikos Paliathanasis, Adamantia Zampeli, Theodosios
Christodoulakis, M.T. Mustafa | Quantization of the Szekeres spacetime through generalized symmetries | Prepared for the proceedings of the Fifteenth Marcel Grossmann
Meeting - MG15 | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the effect of the quantum corrections on the Szekeres spacetime, a
system important for the study of the inhomogeneities of the pre-inflationary
era of the universe. The study is performed in the context of canonical
quantisation in the presence of symmetries. We construct an effective classical
Lagrangian... | [
{
"created": "Sun, 13 Dec 2020 14:49:53 GMT",
"version": "v1"
}
] | 2020-12-15 | [
[
"Paliathanasis",
"Andronikos",
""
],
[
"Zampeli",
"Adamantia",
""
],
[
"Christodoulakis",
"Theodosios",
""
],
[
"Mustafa",
"M. T.",
""
]
] | We present the effect of the quantum corrections on the Szekeres spacetime, a system important for the study of the inhomogeneities of the pre-inflationary era of the universe. The study is performed in the context of canonical quantisation in the presence of symmetries. We construct an effective classical Lagrangian a... |
1707.03614 | Golam Mortuza Hossain | Subhajit Barman, Golam Mortuza Hossain and Chiranjeeb Singha | An exact derivation of the Hawking effect in canonical formulation | 11 pages, 3 figures, revtex4 | Phys. Rev. D 97, 025016 (2018) | 10.1103/PhysRevD.97.025016 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hawking effect is one of the most extensively studied topics in modern
physics. Yet it remains relatively under-explored within the framework of
canonical quantization. The key difficulty lies in the fact that the Hawking
effect is principally understood using the relation between the ingoing modes
which leave pa... | [
{
"created": "Wed, 12 Jul 2017 09:33:56 GMT",
"version": "v1"
}
] | 2018-01-31 | [
[
"Barman",
"Subhajit",
""
],
[
"Hossain",
"Golam Mortuza",
""
],
[
"Singha",
"Chiranjeeb",
""
]
] | The Hawking effect is one of the most extensively studied topics in modern physics. Yet it remains relatively under-explored within the framework of canonical quantization. The key difficulty lies in the fact that the Hawking effect is principally understood using the relation between the ingoing modes which leave past... |
2211.09489 | Tomoaki Murata | Tomoaki Murata, Tomohiro Fujita, and Tsutomu Kobayashi | How does SU($N$)-natural inflation isotropize the universe? | 18 pages, 11 figures | Phys. Rev. D 107, 043508 (2023) | 10.1103/PhysRevD.107.043508 | RUP-22-23 | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | We study the homogeneous and anisotropic dynamics of pseudoscalar inflation
coupled to an SU($N$) gauge field. To see how the initially anisotropic
universe is isotropized in such an inflation model, we derive the equations to
obtain axisymmetric SU($N$) gauge field configurations in Bianchi type-I
geometry and discu... | [
{
"created": "Thu, 17 Nov 2022 12:15:49 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Feb 2023 01:10:26 GMT",
"version": "v2"
}
] | 2023-02-13 | [
[
"Murata",
"Tomoaki",
""
],
[
"Fujita",
"Tomohiro",
""
],
[
"Kobayashi",
"Tsutomu",
""
]
] | We study the homogeneous and anisotropic dynamics of pseudoscalar inflation coupled to an SU($N$) gauge field. To see how the initially anisotropic universe is isotropized in such an inflation model, we derive the equations to obtain axisymmetric SU($N$) gauge field configurations in Bianchi type-I geometry and discuss... |
0904.0065 | Hongsheng Zhang | Hongsheng Zhang and Hyerim Noh | N-dimensional plane symmetric solution with perfect fluid source | 9 pages, 1 table; v2: 2 references added | Phys.Lett.B671:428-434,2009 | 10.1016/j.physletb.2008.12.057 | null | gr-qc astro-ph.CO hep-ph hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new class of plane symmetric solution sourced by a perfect fluid is found
in our recent work. An n-dimensional ($n\geq 4$) global plane symmetric
solution of Einstein field equation generated by a perfect fluid source is
investigated, which is the direct generalization of our previous 4-dimensional
solution. One ti... | [
{
"created": "Wed, 1 Apr 2009 06:04:26 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Jul 2009 05:41:17 GMT",
"version": "v2"
}
] | 2011-03-28 | [
[
"Zhang",
"Hongsheng",
""
],
[
"Noh",
"Hyerim",
""
]
] | A new class of plane symmetric solution sourced by a perfect fluid is found in our recent work. An n-dimensional ($n\geq 4$) global plane symmetric solution of Einstein field equation generated by a perfect fluid source is investigated, which is the direct generalization of our previous 4-dimensional solution. One time... |
gr-qc/9812010 | A. Puncher | J. Wainwright, M. J. Hancock, C. Uggla | Asymptotic self-similarity breaking at late times in cosmology | 29 pages | Class.Quant.Grav. 16 (1999) 2577-2598 | 10.1088/0264-9381/16/8/302 | null | gr-qc | null | We study the late time evolution of a class of exact anisotropic cosmological
solutions of Einstein's equations, namely spatially homogeneous cosmologies of
Bianchi type VII$_0$ with a perfect fluid source. We show that, in contrast to
models of Bianchi type VII$_h$ which are asymptotically self-similar at late
times... | [
{
"created": "Wed, 2 Dec 1998 18:52:39 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Wainwright",
"J.",
""
],
[
"Hancock",
"M. J.",
""
],
[
"Uggla",
"C.",
""
]
] | We study the late time evolution of a class of exact anisotropic cosmological solutions of Einstein's equations, namely spatially homogeneous cosmologies of Bianchi type VII$_0$ with a perfect fluid source. We show that, in contrast to models of Bianchi type VII$_h$ which are asymptotically self-similar at late times, ... |
2110.03377 | Daniil Krichevskiy | Stanislav Alexeyev, Daniil Krichevskiy, Boris Latosh | Gravity models with nonlinear symmetry realization | null | Alexeyev, S.; Krichevskiy, D.; Latosh, B. Gravity Models with
Nonlinear Symmetry Realization. Universe 2021, 7, 501 | 10.3390/universe7120501 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Three models with nonlinear realizations of conformal symmetry are discussed.
The simplest model can only describe a universe expanding with a deceleration
and does not include inflation. The other models are equivalent up to a
variables reparametrization. All these models contain ghost degrees of freedom
which may b... | [
{
"created": "Thu, 7 Oct 2021 12:14:29 GMT",
"version": "v1"
}
] | 2021-12-23 | [
[
"Alexeyev",
"Stanislav",
""
],
[
"Krichevskiy",
"Daniil",
""
],
[
"Latosh",
"Boris",
""
]
] | Three models with nonlinear realizations of conformal symmetry are discussed. The simplest model can only describe a universe expanding with a deceleration and does not include inflation. The other models are equivalent up to a variables reparametrization. All these models contain ghost degrees of freedom which may be ... |
2105.03970 | Genly Le\'on | Andronikos Paliathanasis, Megandhren Govender and Genly Leon | Temporal evolution of a radiating star via Lie symmetries | 8 pages, 7 figures | Eur.Phys.J.C 81 (2021) 8, 718 | 10.1140/epjc/s10052-021-09521-x | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we present for the first time the general solution of the
temporal evolution equation arising from the matching of a conformally flat
interior to the Vaidya solution. This problem was first articulated by Banerjee
et al. (A. Banerjee, S. B. Dutta Choudhury, and Bidyut K. Bhui, Phys. Rev. D,
40 (670) 198... | [
{
"created": "Sun, 9 May 2021 17:22:28 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Apr 2022 20:00:46 GMT",
"version": "v2"
}
] | 2022-04-12 | [
[
"Paliathanasis",
"Andronikos",
""
],
[
"Govender",
"Megandhren",
""
],
[
"Leon",
"Genly",
""
]
] | In this work, we present for the first time the general solution of the temporal evolution equation arising from the matching of a conformally flat interior to the Vaidya solution. This problem was first articulated by Banerjee et al. (A. Banerjee, S. B. Dutta Choudhury, and Bidyut K. Bhui, Phys. Rev. D, 40 (670) 1989)... |
1709.09039 | Mehrab Momennia | Seyed Hossein Hendi, Mehrab Momennia | Reentrant phase transition of Born-Infeld-dilaton black holes | 9 pages, 5 figures, 2 tables. A section added. Accepted in EPJC | Eur. Phys. J. C 78 (2018) 800 | 10.1140/epjc/s10052-018-6278-y | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore a novel reentrant phase transition of four-dimensional
Born-Infeld-dilaton black hole in which the first order phase transition modify
into a zeroth order phase transition below the critical point. Working in the
extended phase space with regarding the cosmological constant as a pressure, we
study the reen... | [
{
"created": "Sun, 24 Sep 2017 17:50:42 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Sep 2018 19:38:21 GMT",
"version": "v2"
}
] | 2019-05-21 | [
[
"Hendi",
"Seyed Hossein",
""
],
[
"Momennia",
"Mehrab",
""
]
] | We explore a novel reentrant phase transition of four-dimensional Born-Infeld-dilaton black hole in which the first order phase transition modify into a zeroth order phase transition below the critical point. Working in the extended phase space with regarding the cosmological constant as a pressure, we study the reentr... |
gr-qc/9804016 | Wladimir Belayev | W.B.Belayev | About model of the Universe with accelerated movement of the time | 4 pages | null | null | NTV-98-03 | gr-qc | null | Cosmological model based on metric of Fridmann-Robertson-Walker with
permanent size and acceleration of time is considered. The problem of the dark
matter is analyzed within this model .
| [
{
"created": "Mon, 6 Apr 1998 15:20:06 GMT",
"version": "v1"
},
{
"created": "Thu, 14 May 1998 06:35:38 GMT",
"version": "v2"
},
{
"created": "Tue, 7 Jul 1998 11:56:59 GMT",
"version": "v3"
},
{
"created": "Tue, 30 Mar 1999 17:59:29 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Belayev",
"W. B.",
""
]
] | Cosmological model based on metric of Fridmann-Robertson-Walker with permanent size and acceleration of time is considered. The problem of the dark matter is analyzed within this model . |
gr-qc/0107077 | Roberto Casadio | R. Casadio, A. Gruppuso | On boundary terms and conformal transformations in curved space-times | LaTeX 2e, 12 pages, no figures | Int.J.Mod.Phys. D11 (2002) 703-714 | 10.1142/S0218271802001913 | null | gr-qc hep-th | null | We intend to clarify the interplay between boundary terms and conformal
transformations in scalar-tensor theories of gravity. We first consider the
action for pure gravity in five dimensions and show that, on compactifing a la
Kaluza-Klein to four dimensions, one obtains the correct boundary terms in the
Jordan (or S... | [
{
"created": "Tue, 24 Jul 2001 08:27:46 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Casadio",
"R.",
""
],
[
"Gruppuso",
"A.",
""
]
] | We intend to clarify the interplay between boundary terms and conformal transformations in scalar-tensor theories of gravity. We first consider the action for pure gravity in five dimensions and show that, on compactifing a la Kaluza-Klein to four dimensions, one obtains the correct boundary terms in the Jordan (or Str... |
2002.08183 | Jackson Levi Said | Gabriel Farrugia, Jackson Levi Said, and Andrew Finch | Gravitoelectromagnetism, Solar System Test and Weak-Field Solutions in
$f(T,B)$ Gravity with Observational Constraints | 15 pages | Universe 2020, 6(2), 34 | 10.3390/universe6020034 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitomagnetism characterize phenomena in the weak field limit within the
context of rotating systems. These are mainly manifested in the geodetic and
Lense-Thirring effects. The geodetic effect describes the precession of the
spin of a gyroscope in orbit about a massive static central object, while the
Lense-Thirri... | [
{
"created": "Tue, 18 Feb 2020 17:22:46 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Feb 2020 08:58:40 GMT",
"version": "v2"
}
] | 2020-02-28 | [
[
"Farrugia",
"Gabriel",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Finch",
"Andrew",
""
]
] | Gravitomagnetism characterize phenomena in the weak field limit within the context of rotating systems. These are mainly manifested in the geodetic and Lense-Thirring effects. The geodetic effect describes the precession of the spin of a gyroscope in orbit about a massive static central object, while the Lense-Thirring... |
1912.06887 | Daniele Bertacca DR. | Daniele Bertacca | Generalisation of the Kaiser Rocket effect in general relativity in the
wide-angle galaxy 2-point correlation function | 24 pages, 12 figures. Matches published version | null | 10.1142/S0218271820500856 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study wide-angle correlations in the galaxy power spectrum in redshift
space, including all general relativistic effects and the Kaiser Rocket effect
in general relativity. We find that the Kaiser Rocket effect becomes important
on large scales and at high redshifts, and leads to new contributions in
wide-angle co... | [
{
"created": "Sat, 14 Dec 2019 17:33:43 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Aug 2020 12:53:02 GMT",
"version": "v2"
}
] | 2020-08-26 | [
[
"Bertacca",
"Daniele",
""
]
] | We study wide-angle correlations in the galaxy power spectrum in redshift space, including all general relativistic effects and the Kaiser Rocket effect in general relativity. We find that the Kaiser Rocket effect becomes important on large scales and at high redshifts, and leads to new contributions in wide-angle corr... |
1506.07907 | Steven L. Liebling | Alex Buchel and Stephen R. Green and Luis Lehner and Steven L.
Liebling | Reply to "Comment on two-mode stability islands around AdS" | 2 pages, 1 figure | Phys. Rev. Lett. 115, 049102 (2015) | 10.1103/PhysRevLett.115.049102 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We respond to the criticisms of a recent comment by Bizo\'n and Rostworowski
[arXiv:1410.2631].
| [
{
"created": "Thu, 25 Jun 2015 21:57:58 GMT",
"version": "v1"
}
] | 2015-07-30 | [
[
"Buchel",
"Alex",
""
],
[
"Green",
"Stephen R.",
""
],
[
"Lehner",
"Luis",
""
],
[
"Liebling",
"Steven L.",
""
]
] | We respond to the criticisms of a recent comment by Bizo\'n and Rostworowski [arXiv:1410.2631]. |
gr-qc/0105031 | Lawrence E. Kidder | Lawrence E. Kidder, Mark A. Scheel, and Saul A. Teukolsky | Extending the lifetime of 3D black hole computations with a new
hyperbolic system of evolution equations | 11 pages, 2 figures, submitted to PRD | Phys.Rev.D64:064017,2001 | 10.1103/PhysRevD.64.064017 | null | gr-qc | null | We present a new many-parameter family of hyperbolic representations of
Einstein's equations, which we obtain by a straightforward generalization of
previously known systems. We solve the resulting evolution equations
numerically for a Schwarzschild black hole in three spatial dimensions, and
find that the stability ... | [
{
"created": "Tue, 8 May 2001 19:24:59 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kidder",
"Lawrence E.",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Teukolsky",
"Saul A.",
""
]
] | We present a new many-parameter family of hyperbolic representations of Einstein's equations, which we obtain by a straightforward generalization of previously known systems. We solve the resulting evolution equations numerically for a Schwarzschild black hole in three spatial dimensions, and find that the stability of... |
gr-qc/9805089 | Angelo Tartaglia | G. Rizzi, A. Tartaglia (Dipartimento di Fisica, Politecnico Torino,
Italy) | Speed of light on rotating platforms | Latex, 2 figures | null | null | Centro Volterra, 299/97 | gr-qc | null | It is often taken for granted that on board a rotating disk it is possible to
operate a \QTR{it}{global}3+1 splitting of space-time, such that both lengths
and time intervals are \QTR{it}{uniquely} defined in terms of measurements
performed by real rods and real clocks at rest on the platform. This paper
shows that t... | [
{
"created": "Mon, 25 May 1998 09:22:00 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rizzi",
"G.",
"",
"Dipartimento di Fisica, Politecnico Torino,\n Italy"
],
[
"Tartaglia",
"A.",
"",
"Dipartimento di Fisica, Politecnico Torino,\n Italy"
]
] | It is often taken for granted that on board a rotating disk it is possible to operate a \QTR{it}{global}3+1 splitting of space-time, such that both lengths and time intervals are \QTR{it}{uniquely} defined in terms of measurements performed by real rods and real clocks at rest on the platform. This paper shows that thi... |
2212.14362 | Xian Gao | Zheng Chen, Yang Yu and Xian Gao | Polarized gravitational waves in the parity violating
scalar-nonmetricity theory | 12 pages, no figure | null | 10.1088/1475-7516/2023/06/001 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | There has been increasing interest in investigating the possible parity
violating features in the gravity theory and on the cosmological scales. In
this work, we consider a class of scalar-nonmetricity theory, of which the
Lagrangian is polynomial built of the nonmetricity tensor and a scalar field.
The nonmetricity ... | [
{
"created": "Thu, 29 Dec 2022 16:25:11 GMT",
"version": "v1"
}
] | 2023-06-14 | [
[
"Chen",
"Zheng",
""
],
[
"Yu",
"Yang",
""
],
[
"Gao",
"Xian",
""
]
] | There has been increasing interest in investigating the possible parity violating features in the gravity theory and on the cosmological scales. In this work, we consider a class of scalar-nonmetricity theory, of which the Lagrangian is polynomial built of the nonmetricity tensor and a scalar field. The nonmetricity te... |
0707.1972 | Stefan Haesen | Stefan Haesen and Miguel Ortega | Boost invariant marginally trapped surfaces in Minkowski 4-space | 13 pages, comment added in section 2 | Class.Quant.Grav.24:5441-5452,2007 | 10.1088/0264-9381/24/22/009 | null | gr-qc | null | The extremal and partly marginally trapped surfaces in Minkowski 4-space,
which are invariant under the group of boost isometries, are classified.
Moreover, it is shown that there do not exist extremal surfaces of this kind
with constant Gaussian curvature. A procedure is given in order to construct a
partly marginal... | [
{
"created": "Fri, 13 Jul 2007 11:07:08 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Oct 2007 07:30:33 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Haesen",
"Stefan",
""
],
[
"Ortega",
"Miguel",
""
]
] | The extremal and partly marginally trapped surfaces in Minkowski 4-space, which are invariant under the group of boost isometries, are classified. Moreover, it is shown that there do not exist extremal surfaces of this kind with constant Gaussian curvature. A procedure is given in order to construct a partly marginally... |
1707.01619 | Maurice H. P. M. van Putten | Maurice H.P.M. van Putten | Galaxy rotation curves and the deceleration parameter in weak gravity | 15 p., 5 figs., based on invited talk Conference Cosmology,
Gravitational waves and Particles, 6-10 Feb., NTU, Singapore (2017) | Mod. Phys. Lett. A, 32, 1730019 (2017) | 10.1142/S0217732317300191 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a theory of weak gravity parameterized by a fundamental frequency
$\omega_0 = \sqrt{1-q}H$ of the cosmoloogical horizon, where $H$ and $q$ denote
the Hubble and, respectively, deceleration parameter. It predicts (i) a $C^0$
onset to weak gravity across accelerations $\alpha = a_{dS}$ in galaxy rotation
cur... | [
{
"created": "Thu, 6 Jul 2017 02:58:43 GMT",
"version": "v1"
}
] | 2017-07-07 | [
[
"van Putten",
"Maurice H. P. M.",
""
]
] | We present a theory of weak gravity parameterized by a fundamental frequency $\omega_0 = \sqrt{1-q}H$ of the cosmoloogical horizon, where $H$ and $q$ denote the Hubble and, respectively, deceleration parameter. It predicts (i) a $C^0$ onset to weak gravity across accelerations $\alpha = a_{dS}$ in galaxy rotation curve... |
2208.11953 | Salah Haouat | M. Bouali and S. Haouat | Particle creation in the presence of minimal length: The time dependent
gauge | null | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this paper we have studied the problem of scalar particles pair creation
by a constant electric field in the presence of a minimal length. A closed
expression for the corresponding Green's function is obtained via path integral
approach. Then by projecting this function on the outgoing particle and
antiparticle st... | [
{
"created": "Thu, 25 Aug 2022 09:19:39 GMT",
"version": "v1"
}
] | 2022-08-26 | [
[
"Bouali",
"M.",
""
],
[
"Haouat",
"S.",
""
]
] | In this paper we have studied the problem of scalar particles pair creation by a constant electric field in the presence of a minimal length. A closed expression for the corresponding Green's function is obtained via path integral approach. Then by projecting this function on the outgoing particle and antiparticle stat... |
gr-qc/0509129 | Eirini Messaritaki | LIGO Scientific Collaboration: B. Abbott et. al | Search for gravitational waves from binary black hole inspirals in LIGO
data | 18 pages, 8 figures | Phys.Rev.D73:062001,2006 | 10.1103/PhysRevD.73.062001 | null | gr-qc | null | We report on a search for gravitational waves from binary black hole
inspirals in the data from the second science run of the LIGO interferometers.
The search focused on binary systems with component masses between 3 and 20
solar masses. Optimally oriented binaries with distances up to 1 Mpc could be
detected with ef... | [
{
"created": "Fri, 30 Sep 2005 17:08:23 GMT",
"version": "v1"
}
] | 2009-09-29 | [
[
"LIGO Scientific Collaboration",
"",
""
],
[
"al",
"B. Abbott et.",
""
]
] | We report on a search for gravitational waves from binary black hole inspirals in the data from the second science run of the LIGO interferometers. The search focused on binary systems with component masses between 3 and 20 solar masses. Optimally oriented binaries with distances up to 1 Mpc could be detected with effi... |
2106.15138 | Rajesh Kumar | Anjali Pandey, Rajesh Kumar, Sudhir Kumar Srivastava | Spherically Symmetric Gravitational Collapse Of Inhomogeneous Dust Cloud
In The Background Of Dark Energy | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | The present paper deals with the gravitational collapse of an inhomogeneous
spherical star consisting of dust fluid in the background of dark energy
components with linear equation of state. We discussed the development of
apparent horizon to investigate the black-hole formation in gravitational
collapsing process. T... | [
{
"created": "Tue, 29 Jun 2021 07:49:49 GMT",
"version": "v1"
}
] | 2021-06-30 | [
[
"Pandey",
"Anjali",
""
],
[
"Kumar",
"Rajesh",
""
],
[
"Srivastava",
"Sudhir Kumar",
""
]
] | The present paper deals with the gravitational collapse of an inhomogeneous spherical star consisting of dust fluid in the background of dark energy components with linear equation of state. We discussed the development of apparent horizon to investigate the black-hole formation in gravitational collapsing process. The... |
2305.15774 | Adri\`a G\'omez-Valent | Adri\`a G\'omez-Valent, Nick E. Mavromatos and Joan Sol\`a Peracaula | Stringy Running Vacuum Model and current Tensions in Cosmology | 38 pages, 6 figures, 7 tables. Version accepted for publication in
Classical and Quantum Gravity. Extended discussion (new section VII),
improved Figure 6, corrected typos and references added | null | 10.1088/1361-6382/ad0fb8 | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We discuss the potential alleviation of both the Hubble and the growth of
galactic structure data tensions observed in the current epoch of Cosmology in
the context of the so-called Stringy Running Vacuum Model (RVM) of Cosmology.
This is a gravitational field theory coupled to matter, which, at early eras,
contains ... | [
{
"created": "Thu, 25 May 2023 06:35:49 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Nov 2023 09:21:38 GMT",
"version": "v2"
}
] | 2023-11-28 | [
[
"Gómez-Valent",
"Adrià",
""
],
[
"Mavromatos",
"Nick E.",
""
],
[
"Peracaula",
"Joan Solà",
""
]
] | We discuss the potential alleviation of both the Hubble and the growth of galactic structure data tensions observed in the current epoch of Cosmology in the context of the so-called Stringy Running Vacuum Model (RVM) of Cosmology. This is a gravitational field theory coupled to matter, which, at early eras, contains gr... |
2102.02707 | Ignacio Salazar | Nicol\'as Grandi and Ignacio Salazar Landea | Diving inside a hairy black hole | 22 pages, 7 figures, accepted to JHEP | J. High Energ. Phys. 2021, 152 (2021) | 10.1007/JHEP05(2021)152 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the interior of the Einstein-Gauss-Bonnet charged black-hole
with scalar hair. We find a variety of dynamical epochs, with the particular
important feature that the Cauchy horizon is not present. This makes the
violation of the no-hair theorem a possible tool to understand how might the
strong cosmic c... | [
{
"created": "Thu, 4 Feb 2021 16:02:10 GMT",
"version": "v1"
},
{
"created": "Tue, 25 May 2021 15:52:48 GMT",
"version": "v2"
}
] | 2021-05-26 | [
[
"Grandi",
"Nicolás",
""
],
[
"Landea",
"Ignacio Salazar",
""
]
] | We investigate the interior of the Einstein-Gauss-Bonnet charged black-hole with scalar hair. We find a variety of dynamical epochs, with the particular important feature that the Cauchy horizon is not present. This makes the violation of the no-hair theorem a possible tool to understand how might the strong cosmic cen... |
gr-qc/9711079 | Carsten Gundlach | Carsten Gundlach (Albert Einstein Institut, Potsdam) | Angular momentum at the black hole threshold | 4 pages, Revtex. Abbreviated version, using simpler notation | Phys.Rev.D57:7080-7083,1998 | 10.1103/PhysRevD.57.7080 | null | gr-qc | null | Near the black hole threshold in phase space, the black hole mass as a
function of the initial data shows the "critical scaling" M \simeq C
(p-p_*)^\gamma, where p labels a family of initial data, p_* is the value of p
at the threshold, and the critical exponent \gamma is universal for a given
matter model. The black... | [
{
"created": "Wed, 26 Nov 1997 14:38:52 GMT",
"version": "v1"
},
{
"created": "Sun, 21 Dec 1997 17:33:23 GMT",
"version": "v2"
}
] | 2009-12-30 | [
[
"Gundlach",
"Carsten",
"",
"Albert Einstein Institut, Potsdam"
]
] | Near the black hole threshold in phase space, the black hole mass as a function of the initial data shows the "critical scaling" M \simeq C (p-p_*)^\gamma, where p labels a family of initial data, p_* is the value of p at the threshold, and the critical exponent \gamma is universal for a given matter model. The black h... |
1109.0840 | Keiichi Akama | Keiichi Akama, Takashi Hattori, Hisamitsu Mukaida | General Solution for the Static, Spherical and Asymptotically Flat
Braneworld | 5 pages, no figure, submitted to the Japanese Physical Society 2011
Annual Meeting which was canceled due to the earthquake in Tohoku district in
March, with errors corrected, and with the sign convention of the curvature
tensor changed | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The general solution for the static, spherical and asymptotically flat
braneworld is derived by solving the bulk Einstein equation and braneworld
dynamics. We show that it involves a large arbitrariness, which reduces the
predictability of the theory. Ways out of the difficulty are discussed.
| [
{
"created": "Mon, 5 Sep 2011 09:44:44 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Sep 2011 10:06:26 GMT",
"version": "v2"
},
{
"created": "Thu, 26 Jul 2012 13:23:55 GMT",
"version": "v3"
}
] | 2012-07-27 | [
[
"Akama",
"Keiichi",
""
],
[
"Hattori",
"Takashi",
""
],
[
"Mukaida",
"Hisamitsu",
""
]
] | The general solution for the static, spherical and asymptotically flat braneworld is derived by solving the bulk Einstein equation and braneworld dynamics. We show that it involves a large arbitrariness, which reduces the predictability of the theory. Ways out of the difficulty are discussed. |
0709.0819 | G. Papini | Giorgio Papini | Spin-gravity coupling and gravity-induced quantum phases | 18 pages, 1 figure | null | 10.1007/s10714-007-0595-z | null | gr-qc | null | External gravitational fields induce phase factors in the wave functions of
particles. The phases are exact to first order in the background gravitational
field, are manifestly covariant and gauge invariant and provide a useful tool
for the study of spin-gravity coupling and of the optics of particles in
gravitationa... | [
{
"created": "Thu, 6 Sep 2007 10:15:57 GMT",
"version": "v1"
}
] | 2009-11-13 | [
[
"Papini",
"Giorgio",
""
]
] | External gravitational fields induce phase factors in the wave functions of particles. The phases are exact to first order in the background gravitational field, are manifestly covariant and gauge invariant and provide a useful tool for the study of spin-gravity coupling and of the optics of particles in gravitational ... |
gr-qc/9801033 | George Tsoupros | George Tsoupros | Scaling Behaviour of Conformal Fields in Curved Three-dimensional Space | 12p. Latex, One reference added, To appear in Physics Letters B | Phys.Lett. B423 (1998) 225-230 | 10.1016/S0370-2693(98)00085-9 | ISSN 1038-751X | gr-qc | null | The limitations of three-dimensional semi-classical gravity are explored in
the context of a conformally invariant theory for a self-interacting scalar
field. The analysis of the theory's scaling behaviour reveals that scalar-loop
effects contribute to the conformal anomaly only at advanced orders allowing
for a rang... | [
{
"created": "Mon, 12 Jan 1998 05:26:46 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Jan 1998 05:17:54 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Tsoupros",
"George",
""
]
] | The limitations of three-dimensional semi-classical gravity are explored in the context of a conformally invariant theory for a self-interacting scalar field. The analysis of the theory's scaling behaviour reveals that scalar-loop effects contribute to the conformal anomaly only at advanced orders allowing for a range ... |
gr-qc/0105092 | Ryo Yamazaki | Ryo Yamazaki, Daisuke Ida (Kyoto University) | Black holes in three-dimensional Einstein-Born-Infeld-dilaton theory | 10 pages LaTeX, 2 eps figures, accepted for publication in PRD | Phys.Rev. D64 (2001) 024009 | 10.1103/PhysRevD.64.024009 | null | gr-qc | null | The three-dimensional static and circularly symmetric solution of the
Einstein-Born-Infeld-dilaton system is derived. The solutions corresponding to
low energy string theory are investigated in detail, which include black hole
solutions if the cosmological constant is negative and the mass parameter
exceeds a certain... | [
{
"created": "Fri, 25 May 2001 08:28:01 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Yamazaki",
"Ryo",
"",
"Kyoto University"
],
[
"Ida",
"Daisuke",
"",
"Kyoto University"
]
] | The three-dimensional static and circularly symmetric solution of the Einstein-Born-Infeld-dilaton system is derived. The solutions corresponding to low energy string theory are investigated in detail, which include black hole solutions if the cosmological constant is negative and the mass parameter exceeds a certain c... |
2403.17619 | Da Huang | Yuan-Kun Gao, Da Huang, Yong-Liang Ma, Yong Tang, Yue-Liang Wu,
Yu-Feng Zhou | Linear dynamics and classical tests of the gravitational quantum field
theory | 7 pages, 1 figure | Phys. Rev. D 109, 064072(2024) | 10.1103/PhysRevD.109.064072 | null | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We explore the new physics phenomena of gravidynamics governed by the
inhomogeneous spin gauge symmetry based on the gravitational quantum field
theory. Such a gravidynamics enables us to derive the generalized Einstein
equation and an equation beyond it. To simplify the analyses, we linearize the
dynamic equations o... | [
{
"created": "Tue, 26 Mar 2024 11:50:27 GMT",
"version": "v1"
}
] | 2024-03-27 | [
[
"Gao",
"Yuan-Kun",
""
],
[
"Huang",
"Da",
""
],
[
"Ma",
"Yong-Liang",
""
],
[
"Tang",
"Yong",
""
],
[
"Wu",
"Yue-Liang",
""
],
[
"Zhou",
"Yu-Feng",
""
]
] | We explore the new physics phenomena of gravidynamics governed by the inhomogeneous spin gauge symmetry based on the gravitational quantum field theory. Such a gravidynamics enables us to derive the generalized Einstein equation and an equation beyond it. To simplify the analyses, we linearize the dynamic equations of ... |
gr-qc/0601081 | Alicia M. Sintes | Alicia M. Sintes and Badri Krishnan | Improved Hough search for gravitational wave pulsars | 6 pages, Accepted in Journal of Physics: Conference Series | J.Phys.Conf.Ser. 32 (2006) 206-211 | 10.1088/1742-6596/32/1/031 | null | gr-qc | null | We describe an improved version of the Hough transform search for continuous
gravitational waves from isolated neutron stars assuming the input to be short
segments of Fourier transformed data. The method presented here takes into
account possible non-stationarities of the detector noise and the amplitude
modulation ... | [
{
"created": "Thu, 19 Jan 2006 17:57:36 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Sintes",
"Alicia M.",
""
],
[
"Krishnan",
"Badri",
""
]
] | We describe an improved version of the Hough transform search for continuous gravitational waves from isolated neutron stars assuming the input to be short segments of Fourier transformed data. The method presented here takes into account possible non-stationarities of the detector noise and the amplitude modulation du... |
2102.04795 | Jie Zhang | Jie Zhang, Menquan Liu, Zhie Liu and Shuzheng Yang | An Improvement for Quantum Tunneling Radiation of Fermions in a
Stationary Kerr-Newman Black Hole Spacetime | null | null | 10.1016/j.cjph.2022.08.009 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | By introducing a specific etheric-like vector in the Dirac equation with
Lorentz Invariance Violation (LIV) in the curved spacetime, an improved method
for quantum tunneling radiation of fermions is proposed. As an example, we
apply this new method to a charged axisymmetric Kerr-Newman black hole.
Firstly, considerin... | [
{
"created": "Tue, 9 Feb 2021 12:30:32 GMT",
"version": "v1"
}
] | 2022-10-12 | [
[
"Zhang",
"Jie",
""
],
[
"Liu",
"Menquan",
""
],
[
"Liu",
"Zhie",
""
],
[
"Yang",
"Shuzheng",
""
]
] | By introducing a specific etheric-like vector in the Dirac equation with Lorentz Invariance Violation (LIV) in the curved spacetime, an improved method for quantum tunneling radiation of fermions is proposed. As an example, we apply this new method to a charged axisymmetric Kerr-Newman black hole. Firstly, considering ... |
gr-qc/9807080 | Vladimir Dzhunushaliev | V.Dzhunushaliev | Multidimensional Geometrical Model of the Renormalized Electrical Charge
with Splitting off the Extra Coordinates | 10 pages, 1 figure, awarded Honorable Mention by Grav.Res.Found.,
1998 | Mod.Phys.Lett. A13 (1998) 2179-2186 | 10.1142/S021773239800231X | null | gr-qc | null | A geometrical model of electric charge is proposed. This model has ``naked''
charge screened with a ``fur - coat'' consisting of virtual wormholes. The 5D
wormhole solution in the Kaluza - Klein theory is the ``naked'' charge. The
splitting off of the 5D dimension happens on the two spheres (null surfaces)
bounding t... | [
{
"created": "Wed, 29 Jul 1998 13:47:10 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Dzhunushaliev",
"V.",
""
]
] | A geometrical model of electric charge is proposed. This model has ``naked'' charge screened with a ``fur - coat'' consisting of virtual wormholes. The 5D wormhole solution in the Kaluza - Klein theory is the ``naked'' charge. The splitting off of the 5D dimension happens on the two spheres (null surfaces) bounding thi... |
1908.10617 | Dmitri Gal'tsov | Gerard Cl\'ement and Dmitri Gal'tsov | On the Smarr formulas for electrovac spacetimes with line singularities | 15 pages Latex2e | Phys. Lett. B 802 (2020) 135270 | 10.1016/j.physletb.2020.135270 | LAPTH-043/19 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the revised Komar-Tomimatsu approach, we derive Smarr mass formulas for
stationary axisymmetric solutions of the Einstein-Maxwell equations containing
line singularities (defects) on the polar axis. In terms of the rod structure
associated with Weyl representation of the metric, the horizons and the defects
are... | [
{
"created": "Wed, 28 Aug 2019 09:54:55 GMT",
"version": "v1"
}
] | 2021-03-01 | [
[
"Clément",
"Gerard",
""
],
[
"Gal'tsov",
"Dmitri",
""
]
] | Using the revised Komar-Tomimatsu approach, we derive Smarr mass formulas for stationary axisymmetric solutions of the Einstein-Maxwell equations containing line singularities (defects) on the polar axis. In terms of the rod structure associated with Weyl representation of the metric, the horizons and the defects are f... |
1310.6230 | Michele Sciacca | David Jou, Maria Stella Mongiovi', Michele Sciacca | A duality-invariant Einstein-Planck relation and its consequences on
micro black holes | null | International Journal of Modern Physics D Vol. 23, No. 2 (2014)
1450018 (9 pages) | 10.1142/S0218271814500187 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the consequences of a duality-invariant Einstein-Planck relation
on the equation of state of micro black holes. The results are analogous to
those obtained from the "world crystal" model, but with some significative
differences, as for instance a limiting vanishing value for temperature for
very small blac... | [
{
"created": "Wed, 23 Oct 2013 14:04:40 GMT",
"version": "v1"
}
] | 2014-05-14 | [
[
"Jou",
"David",
""
],
[
"Mongiovi'",
"Maria Stella",
""
],
[
"Sciacca",
"Michele",
""
]
] | We discuss the consequences of a duality-invariant Einstein-Planck relation on the equation of state of micro black holes. The results are analogous to those obtained from the "world crystal" model, but with some significative differences, as for instance a limiting vanishing value for temperature for very small black ... |
1811.09086 | Ioannis Contopoulos | Demetrios Papadopoulos and Ioannis Contopoulos | The magnetic Rayleigh-Taylor instability around astrophysical black
holes | 11 pages, 1 figure, accepted for publication in Monthly Notices | null | 10.1093/mnras/sty3167 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the development of the magnetic Rayleigh-Taylor instability at
the inner edge of an astrophysical disk around a spinning central black hole.
We solve the equations of general relativity that govern small amplitude
oscillations of a discontinuous interface in a Keplerian disk threaded by an
ordered magn... | [
{
"created": "Thu, 22 Nov 2018 10:25:33 GMT",
"version": "v1"
}
] | 2018-12-26 | [
[
"Papadopoulos",
"Demetrios",
""
],
[
"Contopoulos",
"Ioannis",
""
]
] | We investigate the development of the magnetic Rayleigh-Taylor instability at the inner edge of an astrophysical disk around a spinning central black hole. We solve the equations of general relativity that govern small amplitude oscillations of a discontinuous interface in a Keplerian disk threaded by an ordered magnet... |
1201.3028 | Hyeyoun Chung | Hyeyoun Chung | Tunneling between single and multi-centered black hole configurations | 8 pages, 4 figures. v4: final version accepted for publication in
Phys. Rev. D | null | 10.1103/PhysRevD.86.064036 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find a gravitational instanton that connects an initial state
corresponding to a single-centered extremal Reissner-Nordstrom (ERN) black hole
configuration, to a final state corresponding to a multi-centered
configuration. This instanton is interpreted as describing quantum tunneling
between the two different blac... | [
{
"created": "Sat, 14 Jan 2012 17:06:05 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jan 2012 14:00:07 GMT",
"version": "v2"
},
{
"created": "Thu, 15 Mar 2012 19:55:39 GMT",
"version": "v3"
},
{
"created": "Mon, 20 Aug 2012 17:22:47 GMT",
"version": "v4"
}
] | 2013-05-30 | [
[
"Chung",
"Hyeyoun",
""
]
] | We find a gravitational instanton that connects an initial state corresponding to a single-centered extremal Reissner-Nordstrom (ERN) black hole configuration, to a final state corresponding to a multi-centered configuration. This instanton is interpreted as describing quantum tunneling between the two different black ... |
gr-qc/0606061 | T. Padmanabhan | T. Padmanabhan | Gravity: A New Holographic Perspective | Plenary talk at the International Conference on Einstein's Legacy in
the New Millennium, December 15 - 22, 2005, Puri, India; to appear in the
Proceedings to be published in IJMPD; 16 pages; no figures | Int.J.Mod.Phys. D15 (2006) 1659-1676 | 10.1142/S0218271806009029 | null | gr-qc astro-ph hep-th | null | A general paradigm for describing classical (and semiclassical) gravity is
presented. This approach brings to the centre-stage a holographic relationship
between the bulk and surface terms in a general class of action functionals and
provides a deeper insight into several aspects of classical gravity which have
no ex... | [
{
"created": "Wed, 14 Jun 2006 12:43:44 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Jun 2006 18:13:20 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Padmanabhan",
"T.",
""
]
] | A general paradigm for describing classical (and semiclassical) gravity is presented. This approach brings to the centre-stage a holographic relationship between the bulk and surface terms in a general class of action functionals and provides a deeper insight into several aspects of classical gravity which have no expl... |
gr-qc/0201048 | Raimundo Silva Junior | R. Silva (UFRN), J. A. S. Lima (UFRN), and M. O. Calv\~ao (UFRJ) | Temperature Evolution Law of Imperfect Relativistic Fluids | 14 pages, no figure, revtex | Gen.Rel.Grav.34:865-875,2002 | 10.1023/A:1016317914912 | null | gr-qc | null | The first-order general relativistic theory of a generic dissipative
(heat-conducting, viscous, particle-creating) fluid is rediscussed from a
unified covariant frame-independent point of view. By generalizing some
previous works in the literature, we derive a formula for the temperature
variation rate, which is vali... | [
{
"created": "Mon, 14 Jan 2002 23:30:29 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Silva",
"R.",
"",
"UFRN"
],
[
"Lima",
"J. A. S.",
"",
"UFRN"
],
[
"Calvão",
"M. O.",
"",
"UFRJ"
]
] | The first-order general relativistic theory of a generic dissipative (heat-conducting, viscous, particle-creating) fluid is rediscussed from a unified covariant frame-independent point of view. By generalizing some previous works in the literature, we derive a formula for the temperature variation rate, which is valid ... |
1201.0061 | Seyed Hossein Hendi | S. H. Hendi and D. Momeni | Black hole solutions in F(R) gravity with conformal anomaly | 12 pages, one figure | Eur. Phys. J. C 71 (2011) 1823 | 10.1140/epjc/s10052-011-1823-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we consider $F(R)=R+f(R)$ theory instead of Einstein gravity
with conformal anomaly and look for its analytical solutions. Depending on the
free parameters, one may obtain both uncharged and charged solutions for some
classes of $F(R)$ models. Calculation of Kretschmann scalar shows that there is
a sin... | [
{
"created": "Fri, 30 Dec 2011 04:30:29 GMT",
"version": "v1"
}
] | 2012-01-04 | [
[
"Hendi",
"S. H.",
""
],
[
"Momeni",
"D.",
""
]
] | In this paper, we consider $F(R)=R+f(R)$ theory instead of Einstein gravity with conformal anomaly and look for its analytical solutions. Depending on the free parameters, one may obtain both uncharged and charged solutions for some classes of $F(R)$ models. Calculation of Kretschmann scalar shows that there is a singu... |
2402.08704 | Behzad Eslam Panah | Kh. Jafarzade, B. Eslam Panah, and M. E. Rodrigues | Thermodynamics and Optical Properties of Phantom AdS Black Holes in
Massive Gravity | 26 pages, 12 figures, 1 table | Class. Quantum Grav. 41 (2024) 065007 | 10.1088/1361-6382/ad242e | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by high interest in Lorentz invariant massive gravity models known
as dRGT massive gravity, we present an exact phantom black hole solution in
this theory of gravity and discuss the thermodynamic structure of the black
hole in the canonical ensemble. Calculating the conserved and thermodynamic
quantities, w... | [
{
"created": "Tue, 13 Feb 2024 17:10:49 GMT",
"version": "v1"
}
] | 2024-02-15 | [
[
"Jafarzade",
"Kh.",
""
],
[
"Panah",
"B. Eslam",
""
],
[
"Rodrigues",
"M. E.",
""
]
] | Motivated by high interest in Lorentz invariant massive gravity models known as dRGT massive gravity, we present an exact phantom black hole solution in this theory of gravity and discuss the thermodynamic structure of the black hole in the canonical ensemble. Calculating the conserved and thermodynamic quantities, we ... |
1902.01397 | Ujjal Debnath | Ujjal Debnath and Kazuharu Bamba | Parametrizations of Dark Energy Models in the Background of General
Non-canonical Scalar Field in $D$-dimensional Fractal Universe | 19 pages, 32 figures, Accepted for publication in Eur. Phys. J. C | null | 10.1140/epjc/s10052-019-7172-y | FU-PCG-54 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore non-canonical scalar field model in the background of non-flat
$D$-dimensional fractal Universe with cosmological constant $\Lambda$ on the
condition that the matter and scalar field are separately conserved. The
potential $V$, scalar field $\phi$, function $f$, densities, Hubble parameter
and deceleration... | [
{
"created": "Mon, 4 Feb 2019 17:10:33 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Jul 2019 13:14:29 GMT",
"version": "v2"
}
] | 2019-10-02 | [
[
"Debnath",
"Ujjal",
""
],
[
"Bamba",
"Kazuharu",
""
]
] | We explore non-canonical scalar field model in the background of non-flat $D$-dimensional fractal Universe with cosmological constant $\Lambda$ on the condition that the matter and scalar field are separately conserved. The potential $V$, scalar field $\phi$, function $f$, densities, Hubble parameter and deceleration p... |
2206.14043 | Orlando Luongo | Roberto Giamb\`o, Orlando Luongo, Lorenza Mauro | Red and blue shift in spherical and axisymmetric spacetimes and
astrophysical constraints | 18 pages, 6 figures, 9 tables | The Eur. Phys. J. Plus, 137, 612, (2022) | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the red and blue shifts for astrophysical and cosmological
sources. In particular, we consider low, intermediate and high gravitational
energy domains. Thereby, we handle the binary system Earth - Mars as low energy
landscape whereas white dwarfs and neutron stars as higher energy sources. To
this end, we ... | [
{
"created": "Tue, 28 Jun 2022 14:41:05 GMT",
"version": "v1"
}
] | 2022-06-29 | [
[
"Giambò",
"Roberto",
""
],
[
"Luongo",
"Orlando",
""
],
[
"Mauro",
"Lorenza",
""
]
] | We compute the red and blue shifts for astrophysical and cosmological sources. In particular, we consider low, intermediate and high gravitational energy domains. Thereby, we handle the binary system Earth - Mars as low energy landscape whereas white dwarfs and neutron stars as higher energy sources. To this end, we ta... |
1405.6102 | Jacek Tafel | Jacek Tafel | On the energy of a null cone | 8 pages | Class. Quantum Grav. 31 (2014) 235011 | 10.1088/0264-9381/31/23/235011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive a formula for the Bondi mass aspect in terms of asymptotic data of
the Bondi-Sachs metric in the affine gauge. We prove the positivity of the
total energy of a regular null cone in agreement with a recent result of
Chru\'{s}ciel and Paetz.
| [
{
"created": "Fri, 23 May 2014 15:45:38 GMT",
"version": "v1"
},
{
"created": "Tue, 27 May 2014 20:44:25 GMT",
"version": "v2"
},
{
"created": "Tue, 3 Feb 2015 09:55:10 GMT",
"version": "v3"
}
] | 2016-02-12 | [
[
"Tafel",
"Jacek",
""
]
] | We derive a formula for the Bondi mass aspect in terms of asymptotic data of the Bondi-Sachs metric in the affine gauge. We prove the positivity of the total energy of a regular null cone in agreement with a recent result of Chru\'{s}ciel and Paetz. |
gr-qc/9602004 | Jack Wells | I.B. Khriplovich, A.A. Pomeransky | Gravitational Interaction of Spinning Bodies, Center-of-Mass Coordinate
and Radiation of Compact Binary Systems | 11 pages, latex, no figures | Phys.Lett. A216 (1996) 7 | 10.1016/0375-9601(96)00266-6 | BINP 96-3 | gr-qc | null | Spin-orbit and spin-spin effects in the gravitational interaction are treated
in a close analogy with the fine and hyperfine interactions in atoms. The
proper definition of the cener-of-mass coordinate is discussed. The technique
developed is applied then to the gravitational radiation of compact binary
stars. Our re... | [
{
"created": "Thu, 1 Feb 1996 21:50:06 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Khriplovich",
"I. B.",
""
],
[
"Pomeransky",
"A. A.",
""
]
] | Spin-orbit and spin-spin effects in the gravitational interaction are treated in a close analogy with the fine and hyperfine interactions in atoms. The proper definition of the cener-of-mass coordinate is discussed. The technique developed is applied then to the gravitational radiation of compact binary stars. Our resu... |
1408.5885 | Genly Le\'on | Gustavo Pulgar (Valparaiso U., Catolica), Joel Saavedra (Valparaiso
U., Catolica), Genly Leon (Valparaiso U., Catolica) and Yoelsy Leyva
(Tarapaca U.) | Higher Order Lagrangians inspired by the Pais-Uhlenbeck Oscillator and
their cosmological applications | 30 pages, 7 figures. Affiliations updated. References were added.
Some issues were clarified. The paper matches the published version | JCAP 1505 (2015) 05, 046 | 10.1088/1475-7516/2015/05/046 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study higher derivative terms associated with scalar field cosmology. We
consider a coupling between the scalar field and the geometry inspired by the
Pais-Uhlenbeck oscillator, given by
$\alpha\partial_{\mu}\partial^{\mu}\phi\partial_{\nu}\partial^{\nu}\phi.$ We
investigate the cosmological dynamics in a phase sp... | [
{
"created": "Mon, 25 Aug 2014 19:50:32 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Jan 2015 16:17:34 GMT",
"version": "v2"
},
{
"created": "Sun, 31 May 2015 03:23:34 GMT",
"version": "v3"
}
] | 2015-06-02 | [
[
"Pulgar",
"Gustavo",
"",
"Valparaiso U., Catolica"
],
[
"Saavedra",
"Joel",
"",
"Valparaiso\n U., Catolica"
],
[
"Leon",
"Genly",
"",
"Valparaiso U., Catolica"
],
[
"Leyva",
"Yoelsy",
"",
"Tarapaca U."
]
] | We study higher derivative terms associated with scalar field cosmology. We consider a coupling between the scalar field and the geometry inspired by the Pais-Uhlenbeck oscillator, given by $\alpha\partial_{\mu}\partial^{\mu}\phi\partial_{\nu}\partial^{\nu}\phi.$ We investigate the cosmological dynamics in a phase spac... |
1603.01451 | David Kofro\v{n} | David Kofro\v{n} | Separability of test fields equations on the C-metric background | null | Phys. Rev. D 92, 124064 (2015) | 10.1103/PhysRevD.92.124064 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the Kerr-Newman spacetime the Teukolsky master equation, governing the
fundamental test fields, is of great importance. We derive an analogous master
equation for the non-rotating C-metric which encompass massless Klein-Gordon
field, neutrino field, Maxwell field, Rarita-Schwinger field and gravitational
perturbat... | [
{
"created": "Fri, 4 Mar 2016 13:28:08 GMT",
"version": "v1"
}
] | 2016-03-07 | [
[
"Kofroň",
"David",
""
]
] | In the Kerr-Newman spacetime the Teukolsky master equation, governing the fundamental test fields, is of great importance. We derive an analogous master equation for the non-rotating C-metric which encompass massless Klein-Gordon field, neutrino field, Maxwell field, Rarita-Schwinger field and gravitational perturbatio... |
gr-qc/0507028 | Thomas Buchert | Thomas Buchert | A cosmic equation of state for the inhomogeneous Universe: can a global
far-from-equilibrium state explain Dark Energy? | 7 pages, matches published version in Class. Quant. Grav | Class.Quant.Grav. 22 (2005) L113-L119 | 10.1088/0264-9381/22/19/L01 | null | gr-qc astro-ph hep-th | null | A system of effective Einstein equations for spatially averaged scalar
variables of inhomogeneous cosmological models can be solved by providing a
`cosmic equation of state'. Recent efforts to explain Dark Energy focus on
`backreaction effects' of inhomogeneities on the effective evolution of
cosmological parameters ... | [
{
"created": "Thu, 7 Jul 2005 13:48:59 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Sep 2005 12:25:20 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Buchert",
"Thomas",
""
]
] | A system of effective Einstein equations for spatially averaged scalar variables of inhomogeneous cosmological models can be solved by providing a `cosmic equation of state'. Recent efforts to explain Dark Energy focus on `backreaction effects' of inhomogeneities on the effective evolution of cosmological parameters in... |
gr-qc/9906033 | Yuri P. Goncharov | Yu. P. Goncharov (Sankt-Petersburg State Technical University, Russia) | Twisted spinors on Schwarzschild and Reissner-Nordstrom black holes | 10 pages, LaTeX with using elsart.sty | Phys.Lett. B458 (1999) 29-35 | 10.1016/S0370-2693(99)00572-9 | null | gr-qc | null | We describe twisted configurations of spinor field on the Schwarzschild and
Reissner-Nordstr\"om black holes that arise due to existence of the twisted
spinor bundles over the standard black hole topology. From a physical point of
view the appearance of spinor twisted configurations is linked with the natural
presenc... | [
{
"created": "Wed, 9 Jun 1999 19:46:17 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Goncharov",
"Yu. P.",
"",
"Sankt-Petersburg State Technical University, Russia"
]
] | We describe twisted configurations of spinor field on the Schwarzschild and Reissner-Nordstr\"om black holes that arise due to existence of the twisted spinor bundles over the standard black hole topology. From a physical point of view the appearance of spinor twisted configurations is linked with the natural presence ... |
2402.12270 | Giulio Audagnotto | Giulio Audagnotto and Antonino Di Piazza | Dynamics, quantum states and Compton scattering in nonlinear
gravitational waves | null | J. High Energy Phys. 2024, 23 (2024) | 10.1007/JHEP06(2024)023 | null | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | The classical dynamics and the construction of quantum states in a plane wave
curved spacetime are examined, paying particular attention to the similarities
with the case of an electromagnetic plane wave in flat spacetime. A natural map
connecting the dynamics of a particle in the Rosen metric and the motion of a
cha... | [
{
"created": "Mon, 19 Feb 2024 16:34:05 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Jun 2024 09:57:21 GMT",
"version": "v2"
}
] | 2024-06-28 | [
[
"Audagnotto",
"Giulio",
""
],
[
"Di Piazza",
"Antonino",
""
]
] | The classical dynamics and the construction of quantum states in a plane wave curved spacetime are examined, paying particular attention to the similarities with the case of an electromagnetic plane wave in flat spacetime. A natural map connecting the dynamics of a particle in the Rosen metric and the motion of a charg... |
gr-qc/0004082 | Jos\'e C. N. de Araujo | J.C.N. de Araujo (DAS/Inpe), A. Wang (DFT/Uerj) | Rigidly rotating dust in general relativity | 12 pages, no figures, Latex. General Relativity and Gravitation (in
press) | Gen.Rel.Grav.32:1971-1980,2000 | 10.1023/A:1001929732549 | null | gr-qc astro-ph | null | A solution to the Einstein field equations that represents a rigidly rotating
dust accompanied by a thin matter shell of the same type is found.
| [
{
"created": "Fri, 28 Apr 2000 16:53:16 GMT",
"version": "v1"
}
] | 2009-07-07 | [
[
"de Araujo",
"J. C. N.",
"",
"DAS/Inpe"
],
[
"Wang",
"A.",
"",
"DFT/Uerj"
]
] | A solution to the Einstein field equations that represents a rigidly rotating dust accompanied by a thin matter shell of the same type is found. |
gr-qc/9701034 | Paul Ohara | Paul O'Hara (Northeastern Illinois University, Chicago) | Wave-particle duality in general relativity | 11 pages, AMSTEX | Nuovo Cim. B111 (1996) 779-810 | 10.1007/BF02749012 | null | gr-qc quant-ph | null | In this paper a one to one correspondence is established between space-time
metrics of general relativity and the wave equations of quantum mechanics. This
is done by first taking the square root of the metric associated with a space
and from there, passing directly to a corresponding expression in the dual
space. It... | [
{
"created": "Wed, 15 Jan 1997 16:40:07 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"O'Hara",
"Paul",
"",
"Northeastern Illinois University, Chicago"
]
] | In this paper a one to one correspondence is established between space-time metrics of general relativity and the wave equations of quantum mechanics. This is done by first taking the square root of the metric associated with a space and from there, passing directly to a corresponding expression in the dual space. It i... |
1806.10734 | Sylvain Marsat | Sylvain Marsat, John G. Baker | Fourier-domain modulations and delays of gravitational-wave signals | 41 pages, 21 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a Fourier-domain approach to modulations and delays of
gravitational wave signals, a problem which arises in two different contexts.
For space-based detectors like LISA, the orbital motion of the detector
introduces a time-dependency in the response of the detector, consisting of
both a modulation and a va... | [
{
"created": "Thu, 28 Jun 2018 01:52:50 GMT",
"version": "v1"
}
] | 2018-06-29 | [
[
"Marsat",
"Sylvain",
""
],
[
"Baker",
"John G.",
""
]
] | We present a Fourier-domain approach to modulations and delays of gravitational wave signals, a problem which arises in two different contexts. For space-based detectors like LISA, the orbital motion of the detector introduces a time-dependency in the response of the detector, consisting of both a modulation and a vary... |
gr-qc/9307031 | Jack Gegenberg | Y. Bi and J. Gegenberg | Loop Variables in Topological Gravity | 20 pages, Latex | Class.Quant.Grav.11:883-896,1994 | 10.1088/0264-9381/11/4/008 | null | gr-qc | null | We examine the relationship between covariant and canonical
(Ashtekar/Rovelli/Smolin) loop variables in the context of BF type topological
field theories in 2+1 and 3+1 dimensions, with respective gauge groups SO(2,1)
and SO(3,1). The latter model can be considered as the simplest topological
gravity theory in 3+1 di... | [
{
"created": "Thu, 22 Jul 1993 17:24:00 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Bi",
"Y.",
""
],
[
"Gegenberg",
"J.",
""
]
] | We examine the relationship between covariant and canonical (Ashtekar/Rovelli/Smolin) loop variables in the context of BF type topological field theories in 2+1 and 3+1 dimensions, with respective gauge groups SO(2,1) and SO(3,1). The latter model can be considered as the simplest topological gravity theory in 3+1 dime... |
0809.5280 | Mauricio Bellini | Mariano Anabitarte, Mauricio Bellini (Mar del Plata University &
CONICET) | A confirmation of agreement of different approaches for scalar
gauge-invariant metric perturbations during inflation | Version accepted in EPJC with new title. 11 pages, no figures | null | 10.1140/epjc/s10052-009-0873-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit an extension of the well-known formalism for gauge-invariant
scalar metric fluctuations, to study the spectrums for both, the inflaton and
gauge invariant (scalar) metric fluctuations in the framework of a single field
inflationary model where the quasi-exponential expansion is driven by an
inflation which... | [
{
"created": "Tue, 30 Sep 2008 19:37:01 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Nov 2008 15:04:28 GMT",
"version": "v2"
},
{
"created": "Tue, 6 Jan 2009 17:46:59 GMT",
"version": "v3"
}
] | 2009-11-13 | [
[
"Anabitarte",
"Mariano",
"",
"Mar del Plata University &\n CONICET"
],
[
"Bellini",
"Mauricio",
"",
"Mar del Plata University &\n CONICET"
]
] | We revisit an extension of the well-known formalism for gauge-invariant scalar metric fluctuations, to study the spectrums for both, the inflaton and gauge invariant (scalar) metric fluctuations in the framework of a single field inflationary model where the quasi-exponential expansion is driven by an inflation which i... |
1410.2602 | Harold Erbin | Harold Erbin | Janis-Newman algorithm: simplifications and gauge field transformation | 6 pp. (+ 1 app.). v2: minor modifications to match published version,
available at Springer via http://dx.doi.org/10.1007/s10714-015-1860-1 | Gen.Rel.Grav. 47:19 (2015) | 10.1007/s10714-015-1860-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Janis-Newman algorithm is an old but very powerful tool to generate
rotating solutions from static ones through a set of complex coordinate
transformations. Several solutions have been derived in this way, including
solutions with gauge fields. However, the transformation of the latter was so
far always postulate... | [
{
"created": "Thu, 9 Oct 2014 20:00:04 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Feb 2015 14:46:54 GMT",
"version": "v2"
}
] | 2015-02-17 | [
[
"Erbin",
"Harold",
""
]
] | The Janis-Newman algorithm is an old but very powerful tool to generate rotating solutions from static ones through a set of complex coordinate transformations. Several solutions have been derived in this way, including solutions with gauge fields. However, the transformation of the latter was so far always postulated ... |
2008.04780 | Sarbari Guha Dr. | Sarbari Guha and Sucheta Datta | Axial Gravitational Waves in Bianchi I Universe | 14 pages, final form accepted for publication in IJMPD | International Journal of Modern Physics D, Vol. 29, No. 16 (2020)
2050116 (21 pages) | 10.1142/S0218271820501163 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have studied the propagation of axial gravitational waves
in Bianchi I universe using the Regge-Wheeler gauge. In this gauge, there are
only two non-zero components of $ h_{\mu\nu} $ in the case of axial waves:
$h_0(t,r)$ and $h_1(t,r)$. The field equations in absence of matter have been
derived bot... | [
{
"created": "Sat, 8 Aug 2020 15:56:57 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Oct 2020 07:02:52 GMT",
"version": "v2"
}
] | 2021-07-01 | [
[
"Guha",
"Sarbari",
""
],
[
"Datta",
"Sucheta",
""
]
] | In this paper, we have studied the propagation of axial gravitational waves in Bianchi I universe using the Regge-Wheeler gauge. In this gauge, there are only two non-zero components of $ h_{\mu\nu} $ in the case of axial waves: $h_0(t,r)$ and $h_1(t,r)$. The field equations in absence of matter have been derived both ... |
0901.4530 | Matthew Klimek | Matthew D. Klimek | Parameterized Post-Newtonian coefficients for Brans-Dicke gravity with
d+1 dimensions | 9 pages, accepted in Classical and Quantum Gravity | Class.Quant.Grav.26:065005,2009 | 10.1088/0264-9381/26/6/065005 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present calculations of Post-Newtonian parameters for Brans-Dicke
tensor-scalar gravity in an arbitrary number of compact extra dimensions in
both the Jordan and Einstein conformal frames. We find that the parameter
gamma, which measures the amount of spacetime curvature per unit mass, becomes
a function of omega,... | [
{
"created": "Wed, 28 Jan 2009 19:05:42 GMT",
"version": "v1"
}
] | 2009-04-08 | [
[
"Klimek",
"Matthew D.",
""
]
] | We present calculations of Post-Newtonian parameters for Brans-Dicke tensor-scalar gravity in an arbitrary number of compact extra dimensions in both the Jordan and Einstein conformal frames. We find that the parameter gamma, which measures the amount of spacetime curvature per unit mass, becomes a function of omega, t... |
1403.3262 | Xavier Busch | Xavier Busch, Renaud Parentani | Quantum entanglement in analogue Hawking radiation, when is the final
state non-separable ? | 14 pages, 17 figures | Phys. Rev. D 89, 105024 (2014) | 10.1103/PhysRevD.89.105024 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the quantum entanglement of the quasiparticle pairs emitted by
analogue black holes. We use a phenomenological description of the spectra in
dispersive media to study the domains in parameter space where the final state
is non-separable. In stationary flows, three modes are involved in each sector
of fixed f... | [
{
"created": "Thu, 13 Mar 2014 13:41:37 GMT",
"version": "v1"
}
] | 2014-05-28 | [
[
"Busch",
"Xavier",
""
],
[
"Parentani",
"Renaud",
""
]
] | We study the quantum entanglement of the quasiparticle pairs emitted by analogue black holes. We use a phenomenological description of the spectra in dispersive media to study the domains in parameter space where the final state is non-separable. In stationary flows, three modes are involved in each sector of fixed fre... |
1601.03394 | Barry Wardell | Chris Kavanagh, Adrian C. Ottewill, Barry Wardell | Analytical high-order post-Newtonian expansions for spinning extreme
mass ratio binaries | Minor typos corrected, references added | Phys. Rev. D 93, 124038 (2016) | 10.1103/PhysRevD.93.124038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an analytic computation of Detweiler's redshift invariant for a
point mass in a circular orbit around a Kerr black hole, giving results up to
8.5 post-Newtonian order while making no assumptions on the magnitude of the
spin of the black hole. Our calculation is based on the functional series
method of Mano... | [
{
"created": "Wed, 13 Jan 2016 21:00:00 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Jan 2016 13:50:23 GMT",
"version": "v2"
},
{
"created": "Thu, 16 Jun 2016 19:33:02 GMT",
"version": "v3"
},
{
"created": "Wed, 5 May 2021 10:42:34 GMT",
"version": "v4"
}
] | 2021-05-06 | [
[
"Kavanagh",
"Chris",
""
],
[
"Ottewill",
"Adrian C.",
""
],
[
"Wardell",
"Barry",
""
]
] | We present an analytic computation of Detweiler's redshift invariant for a point mass in a circular orbit around a Kerr black hole, giving results up to 8.5 post-Newtonian order while making no assumptions on the magnitude of the spin of the black hole. Our calculation is based on the functional series method of Mano, ... |
1812.01381 | Sergey Manida | T.Angsachon, M.E.Chaikovskii and S.N.Manida | Conservation laws for classical particles in Anti-de Sitter-Beltrami
space | 8 pages | Theor.Math.Phys., 176(1): 845-852 (2013) | null | null | gr-qc physics.class-ph physics.ed-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider the conservation laws for classical particles in
$AdS_4$.
At first we parameterize a geodesic line and construct conserved quantities
with analog of five dimensional Minkowski space-time $M^{(2,3)}$.
Consequently we change $AdS_4$ space to AdS-Beltrami space-time and write
conserved quan... | [
{
"created": "Tue, 4 Dec 2018 12:43:56 GMT",
"version": "v1"
}
] | 2018-12-05 | [
[
"Angsachon",
"T.",
""
],
[
"Chaikovskii",
"M. E.",
""
],
[
"Manida",
"S. N.",
""
]
] | In this paper we consider the conservation laws for classical particles in $AdS_4$. At first we parameterize a geodesic line and construct conserved quantities with analog of five dimensional Minkowski space-time $M^{(2,3)}$. Consequently we change $AdS_4$ space to AdS-Beltrami space-time and write conserved quantities... |
0909.3329 | Steven Carlip | Steven Carlip | Spontaneous Dimensional Reduction in Short-Distance Quantum Gravity? | 9 pages, aip macros. Invited talk at the XXV Max Born Symposium,
"Physics at the Planck scale," Wroclaw (Poland), June 29--July 3, 2009; to
appear in the Proceedings | null | 10.1063/1.3284402 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Several lines of evidence suggest that quantum gravity at very short
distances may behave effectively as a two-dimensional theory. I summarize these
hints, and offer an additional argument based on the strong-coupling limit of
the Wheeler-DeWitt equation. The resulting scenario suggests a novel approach
to quantum gr... | [
{
"created": "Thu, 17 Sep 2009 22:02:32 GMT",
"version": "v1"
}
] | 2015-05-14 | [
[
"Carlip",
"Steven",
""
]
] | Several lines of evidence suggest that quantum gravity at very short distances may behave effectively as a two-dimensional theory. I summarize these hints, and offer an additional argument based on the strong-coupling limit of the Wheeler-DeWitt equation. The resulting scenario suggests a novel approach to quantum grav... |
gr-qc/0210065 | Lorenzo Iorio | Lorenzo Iorio | Testing General Relativity with Satellite Laser Ranging: Recent
Developments | Latex2e, 10 pages, no figures, no tables. Paper presented at
COSPAR2002 conference held in Houston, TX, from 10 October 2002 to 19 October
2002. To appear in Advance in Space Research. References added and updated | Adv.SpaceRes.39:236-243,2007 | 10.1016/j.asr.2006.04.010 | null | gr-qc astro-ph physics.space-ph | null | In this paper the most recent developments in testing General Relativity in
the gravitational field of the Earth with the technique of Satellite Laser
Ranging are presented. In particular, we concentrate our attention on some
gravitoelectric and gravitomagnetic post--Newtonian orbital effects on the
motion of a test ... | [
{
"created": "Sat, 19 Oct 2002 06:39:21 GMT",
"version": "v1"
},
{
"created": "Sat, 19 Jul 2003 06:36:26 GMT",
"version": "v2"
},
{
"created": "Thu, 18 Sep 2003 12:42:26 GMT",
"version": "v3"
},
{
"created": "Mon, 22 Sep 2003 12:38:12 GMT",
"version": "v4"
}
] | 2009-09-29 | [
[
"Iorio",
"Lorenzo",
""
]
] | In this paper the most recent developments in testing General Relativity in the gravitational field of the Earth with the technique of Satellite Laser Ranging are presented. In particular, we concentrate our attention on some gravitoelectric and gravitomagnetic post--Newtonian orbital effects on the motion of a test bo... |
0705.2133 | Ying-Qiu Gu | Ying-Qiu Gu | The Exact Solutions to the Gravitational Contraction in Comoving
Coordinate System | 9 pages, 1 figure | null | null | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational collapse of a star is a warmly discussed but still puzzling
problem, which not only involves the dynamics of the gases, but also the subtle
coordinate transformation. In this letter, we give some more detailed
investigation on this problem, and reach the results: (I). The comoving
coordinate system ... | [
{
"created": "Tue, 15 May 2007 12:35:47 GMT",
"version": "v1"
},
{
"created": "Sat, 25 Apr 2009 03:08:13 GMT",
"version": "v2"
}
] | 2009-04-30 | [
[
"Gu",
"Ying-Qiu",
""
]
] | The gravitational collapse of a star is a warmly discussed but still puzzling problem, which not only involves the dynamics of the gases, but also the subtle coordinate transformation. In this letter, we give some more detailed investigation on this problem, and reach the results: (I). The comoving coordinate system fo... |
1208.5512 | Gaetano Lambiase | G. Lambiase | Constraints on massive gravity theory from big bang nucleosynthesis | 5 pages | null | 10.1088/1475-7516/2012/10/028 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The massive gravity cosmology is studied in the scenario of big bang
nucleosynthesis. By making use of current bounds on the deviation from the
fractional mass, we derive the constraints on the free parameters of the
theory. The cosmological consequences of the model are also discussed in the
framework of the PAMELA ... | [
{
"created": "Mon, 27 Aug 2012 21:28:54 GMT",
"version": "v1"
}
] | 2015-06-11 | [
[
"Lambiase",
"G.",
""
]
] | The massive gravity cosmology is studied in the scenario of big bang nucleosynthesis. By making use of current bounds on the deviation from the fractional mass, we derive the constraints on the free parameters of the theory. The cosmological consequences of the model are also discussed in the framework of the PAMELA ex... |
1203.5890 | Han Dong | Han Dong, Ying-bin Wang and Xin-he Meng | Extended Birkhoff's Theorem in the f(T) Gravity | 7 pages, 1 figure, submitted to EPJ-C. arXiv admin note: substantial
text overlap with arXiv:1107.0629 | null | 10.1140/epjc/s10052-012-2002-5 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The f(T) theory, a generally modified teleparallel gravity, has been proposed
as an alternative gravity model to account for the dark energy phenomena.
Following our previous work [Xin-he Meng and Ying-bin Wang, EPJC(2011),
arXiv:1107.0629v1], we prove that the Birkhoff's theorem holds in a more
general context, spec... | [
{
"created": "Tue, 27 Mar 2012 08:03:50 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Apr 2012 13:37:21 GMT",
"version": "v2"
}
] | 2015-06-04 | [
[
"Dong",
"Han",
""
],
[
"Wang",
"Ying-bin",
""
],
[
"Meng",
"Xin-he",
""
]
] | The f(T) theory, a generally modified teleparallel gravity, has been proposed as an alternative gravity model to account for the dark energy phenomena. Following our previous work [Xin-he Meng and Ying-bin Wang, EPJC(2011), arXiv:1107.0629v1], we prove that the Birkhoff's theorem holds in a more general context, specif... |
gr-qc/0504021 | Xu Lixin | Hongya Liu, Huanying Liu, Baorong Chang, Lixin Xu | Induced Phantom and 5D Attractor Solution in Space-Time-Matter Theory | ws-mpla.cls, 9 pages, 1 figure, new references added | Mod.Phys.Lett. A20 (2005) 1973-1982 | 10.1142/S0217732305017366 | null | gr-qc astro-ph hep-th | null | In Spacetime-Matter theory we assume that the 4D induced matter of the $5D $
Ricci-flat bouncing cosmological solutions contains a perfect fluid as well as
an induced scalar field. Then we show that the conventional 4D quintessence and
phantom models of dark energy could be recovered from the $5D$ cosmological
soluti... | [
{
"created": "Wed, 6 Apr 2005 04:03:35 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Jul 2005 07:21:07 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Liu",
"Hongya",
""
],
[
"Liu",
"Huanying",
""
],
[
"Chang",
"Baorong",
""
],
[
"Xu",
"Lixin",
""
]
] | In Spacetime-Matter theory we assume that the 4D induced matter of the $5D $ Ricci-flat bouncing cosmological solutions contains a perfect fluid as well as an induced scalar field. Then we show that the conventional 4D quintessence and phantom models of dark energy could be recovered from the $5D$ cosmological solution... |
gr-qc/0402086 | Raul Vera | Ra\"ul Vera | On the construction of global models describing isolated rotating
charged bodies; uniqueness of the exterior gravitational field | LaTeX, 6pages, uses indentfirst package. To appear in the proceedings
of the Spanish Relativity Meeting ERE'03 | null | null | null | gr-qc | null | A relatively recent study by Mars and Senovilla provided us with a uniqueness
result for the exterior vacuum gravitational field of global models describing
finite isolated rotating bodies in equilibrium in General Relativity (GR). The
generalisation to exterior electrovacuum gravitational fields, to include
charged ... | [
{
"created": "Thu, 19 Feb 2004 20:15:19 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Vera",
"Raül",
""
]
] | A relatively recent study by Mars and Senovilla provided us with a uniqueness result for the exterior vacuum gravitational field of global models describing finite isolated rotating bodies in equilibrium in General Relativity (GR). The generalisation to exterior electrovacuum gravitational fields, to include charged ro... |
gr-qc/0505020 | Diego Pavon | Diego Pavon and Winfried Zimdahl | Holographic dark energy and cosmic coincidence | 9 pages, no figures, references updated, typos eliminated. To be
published in Physics Letters B | Phys.Lett.B628:206-210,2005 | 10.1016/j.physletb.2005.08.134 | null | gr-qc astro-ph hep-th | null | In this Letter we demonstrate that any interaction of pressureless dark
matter with holographic dark energy, whose infrared cutoff is set by the Hubble
scale, implies a constant ratio of the energy densities of both components thus
solving the coincidence problem. The equation of state parameter is obtained as
a func... | [
{
"created": "Wed, 4 May 2005 09:48:35 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Jul 2005 11:14:42 GMT",
"version": "v2"
},
{
"created": "Mon, 26 Sep 2005 13:02:51 GMT",
"version": "v3"
}
] | 2009-09-29 | [
[
"Pavon",
"Diego",
""
],
[
"Zimdahl",
"Winfried",
""
]
] | In this Letter we demonstrate that any interaction of pressureless dark matter with holographic dark energy, whose infrared cutoff is set by the Hubble scale, implies a constant ratio of the energy densities of both components thus solving the coincidence problem. The equation of state parameter is obtained as a functi... |
1505.03317 | Joan Josep Ferrando | Joan Josep Ferrando and Juan Antonio S\'aez | Birkhoff theorem and conformal Killing-Yano tensors | 7 pages; accepted in General Relativity and Gravitation | Gen Relativ Gravit (2015) 47:66 | 10.1007/s10714-015-1911-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the main geometric conditions imposed by the hypothesis of the
Jebsen-Birkhoff theorem. We show that the result (existence of an additional
Killing vector) does not necessarily require a three-dimensional isometry group
on two-dimensional orbits but only the existence of a conformal Killing-Yano
tensor. In... | [
{
"created": "Wed, 13 May 2015 10:37:42 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Ferrando",
"Joan Josep",
""
],
[
"Sáez",
"Juan Antonio",
""
]
] | We analyze the main geometric conditions imposed by the hypothesis of the Jebsen-Birkhoff theorem. We show that the result (existence of an additional Killing vector) does not necessarily require a three-dimensional isometry group on two-dimensional orbits but only the existence of a conformal Killing-Yano tensor. In t... |
1701.00819 | Carlos Hidalgo | Roberto A. Sussman, Juan Carlos Hidalgo, Ismael Delgado Gaspar and
Gabriel German | Non-Spherical Szekeres models in the language of Cosmological
Perturbations | V2: Minor comments and a couple of references added. Version accepted
for publication in PRD | Phys. Rev. D 95, 064033 (2017) | 10.1103/PhysRevD.95.064033 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the differences and equivalences between the non-perturbative
description of the evolution of cosmic structure furnished by the Szekeres dust
models (a non-spherical exact solution of Einstein's equations) and the
dynamics of Cosmological Perturbation Theory (CPT) for dust sources in a
$\Lambda$CDM backgroun... | [
{
"created": "Mon, 2 Jan 2017 18:37:21 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Mar 2017 21:48:14 GMT",
"version": "v2"
}
] | 2017-04-05 | [
[
"Sussman",
"Roberto A.",
""
],
[
"Hidalgo",
"Juan Carlos",
""
],
[
"Gaspar",
"Ismael Delgado",
""
],
[
"German",
"Gabriel",
""
]
] | We study the differences and equivalences between the non-perturbative description of the evolution of cosmic structure furnished by the Szekeres dust models (a non-spherical exact solution of Einstein's equations) and the dynamics of Cosmological Perturbation Theory (CPT) for dust sources in a $\Lambda$CDM background.... |
2204.04506 | Tiberiu Harko | Rattanasak Hama, Tiberiu Harko, Sorin V. Sabau | Dark energy and accelerating cosmological evolution from osculating
Barthel-Kropina geometry | 25 pages, 7 figures, accepted for publication in EPJC | null | 10.1140/epjc/s10052-022-10318-9 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Finsler geometry is an important extension of Riemann geometry, in which to
each point of the spacetime manifold an arbitrary internal variable is
associated. Interesting Finsler geometries, with many physical applications,
are the Randers and Kropina type geometries, respectively. A subclass of
Finsler geometries is... | [
{
"created": "Sat, 9 Apr 2022 16:14:04 GMT",
"version": "v1"
}
] | 2022-05-18 | [
[
"Hama",
"Rattanasak",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Sabau",
"Sorin V.",
""
]
] | Finsler geometry is an important extension of Riemann geometry, in which to each point of the spacetime manifold an arbitrary internal variable is associated. Interesting Finsler geometries, with many physical applications, are the Randers and Kropina type geometries, respectively. A subclass of Finsler geometries is r... |
gr-qc/9308014 | null | Riccardo Capovilla | No New Symmetries of the Vacuum Einstein Equations | 9 pages, TeX | Phys.Rev. D49 (1994) 879-882 | 10.1103/PhysRevD.49.879 | null | gr-qc | null | In this note we examine some recently proposed solutions of the linearized
vacuum Einstein equations. We show that such solutions are {\it not} symmetries
of the Einstein equations, because of a crucial integrability condition.
| [
{
"created": "Mon, 16 Aug 1993 21:23:00 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Capovilla",
"Riccardo",
""
]
] | In this note we examine some recently proposed solutions of the linearized vacuum Einstein equations. We show that such solutions are {\it not} symmetries of the Einstein equations, because of a crucial integrability condition. |
1010.4104 | Yohsuke Takamori | Yohsuke Takamori, Ken-ichi Nakao, Hideki Ishihara, Masashi Kimura,
Chul-Moon Yoo | Perturbative Analysis of a Stationary Magnetosphere in an Extreme Black
Hole Spacetime : On the Meissner-like Effect of an Extreme Black Hole | 30 pages, 3 figures | null | 10.1111/j.1365-2966.2010.18063.x | OCU-PHYS-339, YITP-10-79, AP-GR-83 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that the Meissner-like effect is seen in a magnetosphere without
an electric current in black hole spacetime: no non-monopole component of
magnetic flux penetrates the event horizon if the black hole is extreme. In
this paper, in order to see how an electric current affects the Meissner-like
effect, we st... | [
{
"created": "Wed, 20 Oct 2010 05:34:10 GMT",
"version": "v1"
}
] | 2015-05-20 | [
[
"Takamori",
"Yohsuke",
""
],
[
"Nakao",
"Ken-ichi",
""
],
[
"Ishihara",
"Hideki",
""
],
[
"Kimura",
"Masashi",
""
],
[
"Yoo",
"Chul-Moon",
""
]
] | It is known that the Meissner-like effect is seen in a magnetosphere without an electric current in black hole spacetime: no non-monopole component of magnetic flux penetrates the event horizon if the black hole is extreme. In this paper, in order to see how an electric current affects the Meissner-like effect, we stud... |
1806.06754 | Arman Tursunov | Arman Tursunov, Martin Kolo\v{s} and Zden\v{e}k Stuchl\'ik | Orbital widening due to radiation reaction around a magnetized black
hole | 6 pages, 2 figures | Astron. Nachrichten 339, 341 (2018) | 10.1002/asna.201813502 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Radiation reaction acting on a charged particle moving at a stable circular
orbit of a magnetized black hole can lead to the shift of the orbital radius
outwards from the black hole. The effect causes increase of the energy and
angular momentum of the particle measured by an observer at rest at infinity.
In this note... | [
{
"created": "Mon, 18 Jun 2018 15:09:42 GMT",
"version": "v1"
}
] | 2018-11-06 | [
[
"Tursunov",
"Arman",
""
],
[
"Kološ",
"Martin",
""
],
[
"Stuchlík",
"Zdeněk",
""
]
] | Radiation reaction acting on a charged particle moving at a stable circular orbit of a magnetized black hole can lead to the shift of the orbital radius outwards from the black hole. The effect causes increase of the energy and angular momentum of the particle measured by an observer at rest at infinity. In this note w... |
2203.14519 | Ken-Ichi Nakao | Ken-ichi Nakao, Kazumasa Okabayashi, Tomohiro Harada | Radiative gravastar with Gibbons-Hawking temperature | Revised version with 33 pages, 3 figures | null | 10.1103/PhysRevD.106.105006 | OCU-PHYS-560, AP-GR-180, NITEP 133, RUP-22-7 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the quantum particle creation in a toy model of spherically
symmetric gravitational collapse whose final product is not a black hole but a
gravastar. Precedent studies revealed that even in the case of the
gravitational collapse to form a horizonless ultra-compact object, thermal
radiation named transient Ha... | [
{
"created": "Mon, 28 Mar 2022 06:21:48 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Aug 2022 20:27:16 GMT",
"version": "v2"
}
] | 2022-11-23 | [
[
"Nakao",
"Ken-ichi",
""
],
[
"Okabayashi",
"Kazumasa",
""
],
[
"Harada",
"Tomohiro",
""
]
] | We study the quantum particle creation in a toy model of spherically symmetric gravitational collapse whose final product is not a black hole but a gravastar. Precedent studies revealed that even in the case of the gravitational collapse to form a horizonless ultra-compact object, thermal radiation named transient Hawk... |
1606.04343 | Philip David Flammer | Philip David Flammer | Spinning solutions in general relativity with infinite central density | 14 pages, 6 figures | Flammer, P.D. Gen Relativ Gravit (2018) 50: 51.
https://doi.org/10.1007/s10714-018-2371-7 | 10.1007/s10714-018-2371-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper presents general relativistic numerical simulations of uniformly
rotating polytropes. Equations are developed using MSQI coordinates, but taking
a logarithm of the radial coordinate. The result is relatively simple
elliptical differential equations. Due to the logarithmic scale, we can resolve
solutions wi... | [
{
"created": "Mon, 13 Jun 2016 15:19:16 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Aug 2017 23:32:14 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Oct 2017 17:30:39 GMT",
"version": "v3"
},
{
"created": "Tue, 24 Apr 2018 05:47:15 GMT",
"version": "v4"
}
] | 2018-04-25 | [
[
"Flammer",
"Philip David",
""
]
] | This paper presents general relativistic numerical simulations of uniformly rotating polytropes. Equations are developed using MSQI coordinates, but taking a logarithm of the radial coordinate. The result is relatively simple elliptical differential equations. Due to the logarithmic scale, we can resolve solutions with... |
2208.04982 | Ding Jia | Ding Jia | Light ray fluctuation and lattice refinement of simplicial quantum
gravity | minor updates to improve presentation, 30 pages, 21 figures, matches
well with the published version | null | 10.1088/1361-6382/acd97e | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In several approaches of non-perturbative quantum gravity, a major
outstanding problem is to obtain results valid at the infinite lattice
refinement limit. Working with Lorentzian simplicial quantum gravity, we
compute light ray fluctuation probabilities in 3D and 4D across different
lattices. In a simplified refined... | [
{
"created": "Tue, 9 Aug 2022 18:18:52 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Nov 2023 20:55:12 GMT",
"version": "v2"
}
] | 2023-12-01 | [
[
"Jia",
"Ding",
""
]
] | In several approaches of non-perturbative quantum gravity, a major outstanding problem is to obtain results valid at the infinite lattice refinement limit. Working with Lorentzian simplicial quantum gravity, we compute light ray fluctuation probabilities in 3D and 4D across different lattices. In a simplified refined b... |
gr-qc/9707013 | Yuri Levin | Yuri Levin | Internal thermal noise in the LIGO test masses : a direct approach | 6 pages, RevTex, 1 figure | Phys.Rev.D57:659-663,1998 | 10.1103/PhysRevD.57.659 | null | gr-qc | null | The internal thermal noise in LIGO's test masses is analyzed by a new
technique, a direct application of the Fluctuation-Dissipation Theorem to
LIGO's readout observable, $x(t)=$(longitudinal position of test-mass face,
weighted by laser beam's Gaussian profile). Previous analyses, which relied on
a normal-mode decom... | [
{
"created": "Fri, 4 Jul 1997 20:34:01 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Levin",
"Yuri",
""
]
] | The internal thermal noise in LIGO's test masses is analyzed by a new technique, a direct application of the Fluctuation-Dissipation Theorem to LIGO's readout observable, $x(t)=$(longitudinal position of test-mass face, weighted by laser beam's Gaussian profile). Previous analyses, which relied on a normal-mode decompo... |
2201.07979 | Pooya Farokhi | Pooya Farokhi | Shape Dynamics and The Universe: Foundations and Implications | 118 pages, 12 figures, 1 table, Bachelor thesis | null | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Shape dynamics is an alternative background-independent approach to classical
dynamics that implements Leibnizian philosophy and Mach's Principles. It is a
formulation of the dynamics of the universe in terms of the intrinsic and
relational degrees of freedom which are objectively observable and not
properties define... | [
{
"created": "Wed, 19 Jan 2022 04:39:20 GMT",
"version": "v1"
}
] | 2022-01-21 | [
[
"Farokhi",
"Pooya",
""
]
] | Shape dynamics is an alternative background-independent approach to classical dynamics that implements Leibnizian philosophy and Mach's Principles. It is a formulation of the dynamics of the universe in terms of the intrinsic and relational degrees of freedom which are objectively observable and not properties defined ... |
0711.3041 | Peter Fritschel | The LIGO Scientific Collaboration: B. Abbott, et al | LIGO: The Laser Interferometer Gravitational-Wave Observatory | 50 pages, 14 figures | Rept.Prog.Phys.72:076901,2009 | 10.1088/0034-4885/72/7/076901 | LIGO-P070082-v4 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The goal of the Laser Interferometric Gravitational-Wave Observatory (LIGO)
is to detect and study gravitational waves of astrophysical origin. Direct
detection of gravitational waves holds the promise of testing general
relativity in the strong-field regime, of providing a new probe of exotic
objects such as black h... | [
{
"created": "Mon, 19 Nov 2007 23:15:31 GMT",
"version": "v1"
},
{
"created": "Tue, 19 May 2009 15:36:11 GMT",
"version": "v2"
}
] | 2009-09-29 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"Abbott",
"B.",
""
]
] | The goal of the Laser Interferometric Gravitational-Wave Observatory (LIGO) is to detect and study gravitational waves of astrophysical origin. Direct detection of gravitational waves holds the promise of testing general relativity in the strong-field regime, of providing a new probe of exotic objects such as black hol... |
gr-qc/0606130 | Jiliang Jing | Shanxian Xu and Jiliang Jing | Energy of general 4-dimensional stationary axisymmetric spacetime in the
teleparallel geometry | 12 pages | Class.Quant.Grav. 23 (2006) 4659-4672 | 10.1088/0264-9381/23/14/007 | null | gr-qc hep-th | null | The field equation with the cosmological constant term is derived and the
energy of the general 4-dimensional stationary axisymmetric spacetime is
studied in the context of the hamiltonian formulation of the teleparallel
equivalent of general relativity (TEGR). We find that, by means of the integral
form of the const... | [
{
"created": "Fri, 30 Jun 2006 03:19:01 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Xu",
"Shanxian",
""
],
[
"Jing",
"Jiliang",
""
]
] | The field equation with the cosmological constant term is derived and the energy of the general 4-dimensional stationary axisymmetric spacetime is studied in the context of the hamiltonian formulation of the teleparallel equivalent of general relativity (TEGR). We find that, by means of the integral form of the constra... |
gr-qc/9903014 | Theodore Christopher Quinn | Theodore C. Quinn and Robert M. Wald | Energy conservation for point particles undergoing radiation reaction | 34 pages, 1 PostScript figure, uses RevTeX 3.1, submitted to PRD | Phys.Rev. D60 (1999) 064009 | 10.1103/PhysRevD.60.064009 | null | gr-qc | null | For smooth solutions to Maxwell's equations sourced by a smooth
charge-current distribution $j_a$ in stationary, asymptotically flat
spacetimes, one can prove an energy conservation theorem which asserts the
vanishing of the sum of (i) the difference between the final and initial
electromagnetic self-energy of the ch... | [
{
"created": "Thu, 4 Mar 1999 00:51:21 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Quinn",
"Theodore C.",
""
],
[
"Wald",
"Robert M.",
""
]
] | For smooth solutions to Maxwell's equations sourced by a smooth charge-current distribution $j_a$ in stationary, asymptotically flat spacetimes, one can prove an energy conservation theorem which asserts the vanishing of the sum of (i) the difference between the final and initial electromagnetic self-energy of the char... |
1707.02088 | Yannick Boetzel | Yannick Boetzel, Abhimanyu Susobhanan, Achamveedu Gopakumar, Antoine
Klein, Philippe Jetzer | Solving post-Newtonian accurate Kepler Equation | 20 pages, 4 figures | Phys. Rev. D 96, 044011 (2017) | 10.1103/PhysRevD.96.044011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide an elegant way of solving analytically the third post-Newtonian
(3PN) accurate Kepler equation, associated with the 3PN-accurate generalized
quasi-Keplerian parametrization for compact binaries in eccentric orbits. An
additional analytic solution is presented to check the correctness of our
compact solutio... | [
{
"created": "Fri, 7 Jul 2017 09:12:53 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Aug 2017 12:38:52 GMT",
"version": "v2"
}
] | 2017-08-14 | [
[
"Boetzel",
"Yannick",
""
],
[
"Susobhanan",
"Abhimanyu",
""
],
[
"Gopakumar",
"Achamveedu",
""
],
[
"Klein",
"Antoine",
""
],
[
"Jetzer",
"Philippe",
""
]
] | We provide an elegant way of solving analytically the third post-Newtonian (3PN) accurate Kepler equation, associated with the 3PN-accurate generalized quasi-Keplerian parametrization for compact binaries in eccentric orbits. An additional analytic solution is presented to check the correctness of our compact solution ... |
1908.04382 | Carlos O. Lousto | Carlos O. Lousto and James Healy | Kicking gravitational wave detectors with recoiling black holes | 10 pages, 6 figures | Phys. Rev. D 100, 104039 (2019) | 10.1103/PhysRevD.100.104039 | null | gr-qc astro-ph.CO astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Binary black holes emit gravitational radiation with net linear momentum
leading to a retreat of the final remnant black hole that can reach up to
$\sim5,000$ km/s. Full numerical relativity simulations are the only tool to
accurately compute these recoils since they are largely produced when the black
hole horizons ... | [
{
"created": "Mon, 12 Aug 2019 21:03:11 GMT",
"version": "v1"
}
] | 2019-11-27 | [
[
"Lousto",
"Carlos O.",
""
],
[
"Healy",
"James",
""
]
] | Binary black holes emit gravitational radiation with net linear momentum leading to a retreat of the final remnant black hole that can reach up to $\sim5,000$ km/s. Full numerical relativity simulations are the only tool to accurately compute these recoils since they are largely produced when the black hole horizons ar... |
gr-qc/0202076 | Christopher Kohler | C. Kohler | Five-Dimensional Unification of the Cosmological Constant and the Photon
Mass | 8 pages, LaTeX | Class.Quant.Grav. 19 (2002) 3323-3332 | 10.1088/0264-9381/19/12/314 | null | gr-qc | null | Using a non-Riemannian geometry that is adapted to the 4+1 decomposition of
space-time in Kaluza-Klein theory, the translational part of the connection
form is related to the electromagnetic vector potential and a Stueckelberg
scalar. The consideration of a five-dimensional gravitational action functional
that shares... | [
{
"created": "Thu, 21 Feb 2002 15:41:40 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Kohler",
"C.",
""
]
] | Using a non-Riemannian geometry that is adapted to the 4+1 decomposition of space-time in Kaluza-Klein theory, the translational part of the connection form is related to the electromagnetic vector potential and a Stueckelberg scalar. The consideration of a five-dimensional gravitational action functional that shares t... |
gr-qc/9502031 | Franz Hochfellner | W. Kummer and P. Widerin | Conserved Quasilocal Quantities and General Covariant Theories in Two
Dimensions | 21 pages, LaTeX-file | Phys.Rev. D52 (1995) 6965-6975 | 10.1103/PhysRevD.52.6965 | TUW-94-24 | gr-qc | null | General matterless--theories in 1+1 dimensions include dilaton gravity,
Yang--Mills theory as well as non--Einsteinian gravity with dynamical torsion
and higher power gravity, and even models of spherically symmetric d = 4
General Relativity. Their recent identification as special cases of
'Poisson--sigma--models' wi... | [
{
"created": "Wed, 15 Feb 1995 22:07:50 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Kummer",
"W.",
""
],
[
"Widerin",
"P.",
""
]
] | General matterless--theories in 1+1 dimensions include dilaton gravity, Yang--Mills theory as well as non--Einsteinian gravity with dynamical torsion and higher power gravity, and even models of spherically symmetric d = 4 General Relativity. Their recent identification as special cases of 'Poisson--sigma--models' with... |
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