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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1705.04743 | Christopher Pilot | Christopher Pilot | Modeling Cosmic Expansion, and Possible Inflation, As a Thermodynamic
Heat Engine | 19 pages | Zeitschrift f. Naturforschung A (ZNA) Vol: 74 iss:01 (2019) | 10.1515/zna-2018-0314 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Assuming a closed universe with slight positive curvature, cosmic expansion
is modeled as a heat engine where the '"system'" is defined collectively as
those regions of space within the observable universe which will later evolve
into voids or empty space, and the '"surroundings'" are identified collectively
as those... | [
{
"created": "Fri, 12 May 2017 20:16:05 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Mar 2018 01:17:20 GMT",
"version": "v2"
}
] | 2020-08-03 | [
[
"Pilot",
"Christopher",
""
]
] | Assuming a closed universe with slight positive curvature, cosmic expansion is modeled as a heat engine where the '"system'" is defined collectively as those regions of space within the observable universe which will later evolve into voids or empty space, and the '"surroundings'" are identified collectively as those p... |
2210.07103 | Viacheslav A. Emelyanov | Viacheslav A. Emelyanov | On free fall of fermions and antifermions | To be published in Eur. Phys. J. C | Eur. Phys. J. C 83 (2023) 632 | 10.1140/epjc/s10052-023-11788-1 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | We propose a model describing spin-half quantum particles in curved spacetime
in the framework of quantum field theory. Our model is based on embodying
Einstein's equivalence principle and general covariance in the definition of
quantum-particle states. With this model at hand, we compute several
observables which ch... | [
{
"created": "Thu, 13 Oct 2022 15:35:36 GMT",
"version": "v1"
},
{
"created": "Sat, 1 Jul 2023 08:38:28 GMT",
"version": "v2"
}
] | 2023-07-26 | [
[
"Emelyanov",
"Viacheslav A.",
""
]
] | We propose a model describing spin-half quantum particles in curved spacetime in the framework of quantum field theory. Our model is based on embodying Einstein's equivalence principle and general covariance in the definition of quantum-particle states. With this model at hand, we compute several observables which char... |
1506.03829 | Yu Asato | Yu Asato | A note on cutting spin networks and the area spectrum in loop quantum
gravity | 7 pages with 2 figures; v2: added references; v3: added discussion of
a sufficient condition, generalization, some clearer explanations, and more
references | null | 10.1088/0264-9381/33/11/117001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, I show that if a spin network is cut by a surface separating
space-time into two regions, the sum of spins of edges crossing the surface
must be an integer. This gives a restriction on the area spectrum of such
surfaces, including black hole horizons, in loop quantum gravity.
| [
{
"created": "Thu, 11 Jun 2015 20:36:44 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Jul 2015 01:25:53 GMT",
"version": "v2"
},
{
"created": "Wed, 28 Oct 2015 04:39:46 GMT",
"version": "v3"
}
] | 2016-05-25 | [
[
"Asato",
"Yu",
""
]
] | In this paper, I show that if a spin network is cut by a surface separating space-time into two regions, the sum of spins of edges crossing the surface must be an integer. This gives a restriction on the area spectrum of such surfaces, including black hole horizons, in loop quantum gravity. |
1107.2910 | M. D. Maia | M. D. Maia | The Poincare Conjecture and the Cosmological Constant | 9 pages, Latex, presented at the 8th Friedmann Seminar, Rio de
Janeiro, May-June 2011 | null | 10.1142/S2010194511001280 | null | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The concept of deformation of Riemannian geometry is reviewed, with
applications to gravitation and cosmology. Starting with an analysis of the
cosmological constant problem, it is shown that space-times are deformable in
the sense of local change of shape. These deformations leave an observable
signature in the spac... | [
{
"created": "Thu, 14 Jul 2011 19:49:52 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Maia",
"M. D.",
""
]
] | The concept of deformation of Riemannian geometry is reviewed, with applications to gravitation and cosmology. Starting with an analysis of the cosmological constant problem, it is shown that space-times are deformable in the sense of local change of shape. These deformations leave an observable signature in the space-... |
0905.2834 | Peter Hogan | P. A. Hogan and S. O'Farrell | Generating Electromagnetic Waves from Gravity Waves in Cosmology | 13 pages, Latex file, accepted for publication in Physical Review D | Phys.Rev.D79:104028,2009 | 10.1103/PhysRevD.79.104028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Examples of test electromagnetic waves on a
Friedmann-Lemaitre-Robertson-Walker(FLRW) background are constructed from
explicit perturbations of the FLRW space-times describing gravitational waves
propagating in the isotropic universes. A possible physical mechanism for the
production of the test electromagnetic waves... | [
{
"created": "Mon, 18 May 2009 09:02:50 GMT",
"version": "v1"
}
] | 2009-07-30 | [
[
"Hogan",
"P. A.",
""
],
[
"O'Farrell",
"S.",
""
]
] | Examples of test electromagnetic waves on a Friedmann-Lemaitre-Robertson-Walker(FLRW) background are constructed from explicit perturbations of the FLRW space-times describing gravitational waves propagating in the isotropic universes. A possible physical mechanism for the production of the test electromagnetic waves i... |
1506.03519 | Piotr Bizon | Piotr Bizo\'n, Maciej Maliborski, Andrzej Rostworowski | Resonant dynamics and the instability of anti-de Sitter spacetime | 5 pages, 7 figures | Phys. Rev. Lett. 115, 081103 (2015) | 10.1103/PhysRevLett.115.081103 | null | gr-qc hep-th math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider spherically symmetric Einstein-massless-scalar field equations
with negative cosmological constant in five dimensions and analyze evolution of
small perturbations of anti-de Sitter spacetime using the recently proposed
resonant approximation. We show that for typical initial data the solution of
the reson... | [
{
"created": "Thu, 11 Jun 2015 00:47:48 GMT",
"version": "v1"
}
] | 2015-08-26 | [
[
"Bizoń",
"Piotr",
""
],
[
"Maliborski",
"Maciej",
""
],
[
"Rostworowski",
"Andrzej",
""
]
] | We consider spherically symmetric Einstein-massless-scalar field equations with negative cosmological constant in five dimensions and analyze evolution of small perturbations of anti-de Sitter spacetime using the recently proposed resonant approximation. We show that for typical initial data the solution of the resonan... |
1007.4598 | Oleg Zaslavskii | Oleg B. Zaslavskii | Acceleration of particles by nonrotating charged black holes | 8 pages. Two new sections added. To appear in JETP Letters | JETP Lett.92:571-574,2010; Pisma Zh.Eksp.Teor.Fiz.92:635,2010 | 10.1134/S0021364010210010 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, in the series of works a new effect of acceleration of particles by
black holes was found. Under certain conditions, the energy in the centre of
mass frame can become infinitely large. The essential ingredient of such effect
is the rotation of a black hole. In the present Letter, we argue that the
similar e... | [
{
"created": "Tue, 27 Jul 2010 00:51:51 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Oct 2010 15:53:13 GMT",
"version": "v2"
}
] | 2011-03-28 | [
[
"Zaslavskii",
"Oleg B.",
""
]
] | Recently, in the series of works a new effect of acceleration of particles by black holes was found. Under certain conditions, the energy in the centre of mass frame can become infinitely large. The essential ingredient of such effect is the rotation of a black hole. In the present Letter, we argue that the similar eff... |
1303.0399 | Gergely Sz\'ekely | Judit X. Madar\'asz and Gergely Sz\'ekely | The Existence of Superluminal Particles is Consistent with Relativistic
Dynamics | 29 pages, 11 figures. arXiv admin note: text overlap with
arXiv:1202.5790 | Journal of Applied Logic 12:(4) pp. 477-500. (2014) | 10.1016/j.jal.2014.07.003 | null | gr-qc math-ph math.LO math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within an axiomatic framework, we prove that the existence of faster than
light particles is consistent with (does not contradict) the dynamics of
Einstein's special relativity.
| [
{
"created": "Sat, 2 Mar 2013 16:32:01 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Jul 2014 18:10:49 GMT",
"version": "v2"
}
] | 2018-01-30 | [
[
"Madarász",
"Judit X.",
""
],
[
"Székely",
"Gergely",
""
]
] | Within an axiomatic framework, we prove that the existence of faster than light particles is consistent with (does not contradict) the dynamics of Einstein's special relativity. |
1505.04162 | Luis Cort\'es Barbado | Luis C. Barbado, Carlos Barcel\'o, Luis J. Garay | Quantum frictionless trajectories versus geodesics | 5 pages, 3 figures | Phys. Rev. D 92, 084031 (2015) | 10.1103/PhysRevD.92.084031 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Moving particles outside a star will generally experience quantum friction
caused by the Unruh radiation reaction. There exist however radial trajectories
that lack this effect (in the outgoing radiation sector, and ignoring
backscattering). Along these trajectories, observers perceive just stellar
emission, without ... | [
{
"created": "Fri, 15 May 2015 19:02:27 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Nov 2015 14:04:32 GMT",
"version": "v2"
}
] | 2015-11-10 | [
[
"Barbado",
"Luis C.",
""
],
[
"Barceló",
"Carlos",
""
],
[
"Garay",
"Luis J.",
""
]
] | Moving particles outside a star will generally experience quantum friction caused by the Unruh radiation reaction. There exist however radial trajectories that lack this effect (in the outgoing radiation sector, and ignoring backscattering). Along these trajectories, observers perceive just stellar emission, without fu... |
gr-qc/0112002 | Hendryk Pfeiffer | Hendryk Pfeiffer (Cambridge) | Dual variables and a connection picture for the Euclidean Barrett-Crane
model | 33 pages, LaTeX, combined PiCTeX/postscript figures, v2: note added,
TeX error corrected | Class.Quant.Grav.19:1109-1138,2002 | 10.1088/0264-9381/19/6/306 | DAMTP-2001-103 | gr-qc | null | The partition function of the SO(4)- or Spin(4)-symmetric Euclidean
Barrett-Crane model can be understood as a sum over all quantized geometries of
a given triangulation of a four-manifold. In the original formulation, the
variables of the model are balanced representations of SO(4) which describe the
quantized areas... | [
{
"created": "Tue, 4 Dec 2001 15:27:10 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Jan 2002 11:56:07 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Pfeiffer",
"Hendryk",
"",
"Cambridge"
]
] | The partition function of the SO(4)- or Spin(4)-symmetric Euclidean Barrett-Crane model can be understood as a sum over all quantized geometries of a given triangulation of a four-manifold. In the original formulation, the variables of the model are balanced representations of SO(4) which describe the quantized areas o... |
2407.19264 | Marco Schreck MS | Carlos M. Reyes, C\'esar Riquelme, Marco Schreck, and Alex Soto | Reduced geometry and its role in explicit spacetime symmetry violation | 6 pages, 1 figure | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The incompatibility of explicit diffeomorphism violation with Riemannian
geometry within the gravitational Standard-Model Extension (SME) is revisited.
We review two methods of how to deal with this problem. The first is based on
an approach proposed originally by St\"{u}ckelberg and the latter is to
restrict spaceti... | [
{
"created": "Sat, 27 Jul 2024 14:12:45 GMT",
"version": "v1"
}
] | 2024-07-30 | [
[
"Reyes",
"Carlos M.",
""
],
[
"Riquelme",
"César",
""
],
[
"Schreck",
"Marco",
""
],
[
"Soto",
"Alex",
""
]
] | The incompatibility of explicit diffeomorphism violation with Riemannian geometry within the gravitational Standard-Model Extension (SME) is revisited. We review two methods of how to deal with this problem. The first is based on an approach proposed originally by St\"{u}ckelberg and the latter is to restrict spacetime... |
1209.3584 | Hristu Culetu | Hristu Culetu | Comment on "Non-vacuum conformally flat space-times: dark energy" | 5 pages, no figures, one reference updated, Accepted for publication
in Astrophysics and Space Science | null | 10.1007/s10509-012-1341-x | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Ibohal, Ishwarchandra and Singh proposed a class of exact, non-vacuum and
conformally flat solutions of Einstein's equations whose stress tensor $T_{ab}$
has negative pressure. We show that $T_{ab}$ corresponds to an anisotropic
fluid and the equation of state parameter seems not to be $\omega = -1/2$. We
consider th... | [
{
"created": "Mon, 17 Sep 2012 08:38:22 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Dec 2012 10:46:22 GMT",
"version": "v2"
}
] | 2015-06-11 | [
[
"Culetu",
"Hristu",
""
]
] | Ibohal, Ishwarchandra and Singh proposed a class of exact, non-vacuum and conformally flat solutions of Einstein's equations whose stress tensor $T_{ab}$ has negative pressure. We show that $T_{ab}$ corresponds to an anisotropic fluid and the equation of state parameter seems not to be $\omega = -1/2$. We consider the ... |
2312.10443 | Ricardo Escobedo PhD | Ricardo Escobedo, Roberto Santos-Silva, Rafael Hern\'andez-Jim\'enez,
and Claudia Moreno | Quintom cosmology from an effective $BF$ theory | 13 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we analyze an effective action derived from a 7-dimensional
$BF$ theory that, upon dimensional reduction, it transforms into an effective
4-dimensional action. Such resulting effective action involves a generic
metric; however, we study a cosmological model described by a de Sitter
universe, with a Hu... | [
{
"created": "Sat, 16 Dec 2023 13:19:46 GMT",
"version": "v1"
},
{
"created": "Tue, 28 May 2024 04:00:40 GMT",
"version": "v2"
}
] | 2024-05-29 | [
[
"Escobedo",
"Ricardo",
""
],
[
"Santos-Silva",
"Roberto",
""
],
[
"Hernández-Jiménez",
"Rafael",
""
],
[
"Moreno",
"Claudia",
""
]
] | In this article we analyze an effective action derived from a 7-dimensional $BF$ theory that, upon dimensional reduction, it transforms into an effective 4-dimensional action. Such resulting effective action involves a generic metric; however, we study a cosmological model described by a de Sitter universe, with a Hubb... |
1605.07611 | Ines Godonou Salako | Ines G. Salako, M. J. S. Houndjo, Abdul Jawad | Generalized Mattig's relation in Brans-Dicke-Rastall gravity | 20 pages, 4 figures | International Journal of Modern Physics D, Vol. 25, No. 7 (2016)
1650076 (20 pages) | 10.1142/S0218271816500760 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Geodesic Deviation Equation is being studied in Brans-Dicke-Rastall
gravity. We briefly discuss the Brans-Dicke-Rastall gravity and then construct
GDE for FLRW metric. In this way, the obtained geodesic deviation equation will
correspond to the Brans-Dicke-Rastall gravity. Eventually, we solve numerically
the nul... | [
{
"created": "Tue, 24 May 2016 15:47:25 GMT",
"version": "v1"
}
] | 2016-05-26 | [
[
"Salako",
"Ines G.",
""
],
[
"Houndjo",
"M. J. S.",
""
],
[
"Jawad",
"Abdul",
""
]
] | The Geodesic Deviation Equation is being studied in Brans-Dicke-Rastall gravity. We briefly discuss the Brans-Dicke-Rastall gravity and then construct GDE for FLRW metric. In this way, the obtained geodesic deviation equation will correspond to the Brans-Dicke-Rastall gravity. Eventually, we solve numerically the null ... |
1810.11713 | Sergei Kopeikin | Sergei M. Kopeikin (University of Missouri, USA) | Covariant Equations of Motion of Extended Bodies with Arbitrary Mass and
Spin Multipoles | 121 pages, 1 figure, accepted to Phys. Rev. D | Phys. Rev. D 99, 084008 (2019) | 10.1103/PhysRevD.99.084008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper employs the post-Newtonian approximations of scalar-tensor theory
of gravity along with the Cartesian STF tensors and the Blanchet-Damour
multipole formalism to derive translational and rotational equations of motion
of N extended bodies with arbitrary distribution of mass and velocity. We
assume that spac... | [
{
"created": "Sat, 27 Oct 2018 21:25:45 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Feb 2019 00:03:52 GMT",
"version": "v2"
},
{
"created": "Sat, 6 Apr 2019 17:24:24 GMT",
"version": "v3"
}
] | 2019-04-17 | [
[
"Kopeikin",
"Sergei M.",
"",
"University of Missouri, USA"
]
] | This paper employs the post-Newtonian approximations of scalar-tensor theory of gravity along with the Cartesian STF tensors and the Blanchet-Damour multipole formalism to derive translational and rotational equations of motion of N extended bodies with arbitrary distribution of mass and velocity. We assume that spacet... |
1810.01960 | Vasiliy P. Neznamov | V.P.Neznamov, I.I.Safronov, V.E.Shemarulin | Stationary solutions of second-order equations for fermions in
Reissner-Nordstr\"{o}m space-time | 42 pages, 10 figures, 8 tables | JETP Vol. 154 (4) 802 - 825 (2018); English transl. JETP Vol. 127
(4) 684 - 704 (2018) | 10.1134/S0044451018100103; 10.1134/S1063776118100199 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Existence of degenerate stationary bound states with square integrable radial
wave functions was proved when second-order equations are used with the
effective potential of the Reissner-Nordstr\"{o}m (RN) field with two event
horizons for charged and uncharged fermions. The fermions in such states are
localized near ... | [
{
"created": "Tue, 2 Oct 2018 17:11:04 GMT",
"version": "v1"
}
] | 2018-12-06 | [
[
"Neznamov",
"V. P.",
""
],
[
"Safronov",
"I. I.",
""
],
[
"Shemarulin",
"V. E.",
""
]
] | Existence of degenerate stationary bound states with square integrable radial wave functions was proved when second-order equations are used with the effective potential of the Reissner-Nordstr\"{o}m (RN) field with two event horizons for charged and uncharged fermions. The fermions in such states are localized near ev... |
2302.07044 | Gui-Rong Liang | Jin Dai, Gui-Rong Liang | Graviton-Photon Conversion in Atoms and the Detection of Gravitons | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We study graviton-photon conversion in potential ground-based experiments.
From graviton to photon transition, we calculate the cross section of
graviton-atom interaction in the presence of spherical atomic electric fields;
the obtained results hold for graviton energy around 100 keV to 1 GeV, and
would be enhanced a... | [
{
"created": "Tue, 14 Feb 2023 13:55:25 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Mar 2023 16:48:18 GMT",
"version": "v2"
},
{
"created": "Thu, 18 May 2023 18:32:09 GMT",
"version": "v3"
}
] | 2023-05-22 | [
[
"Dai",
"Jin",
""
],
[
"Liang",
"Gui-Rong",
""
]
] | We study graviton-photon conversion in potential ground-based experiments. From graviton to photon transition, we calculate the cross section of graviton-atom interaction in the presence of spherical atomic electric fields; the obtained results hold for graviton energy around 100 keV to 1 GeV, and would be enhanced alo... |
2402.18915 | Bivudutta Mishra Dr. | Rahul Bhagat, B.Mishra | Observational constrained Weyl type $f(Q,T)$ gravity cosmological model
and the dynamical system analysis | 17 pages, 7 figures, 4 tables. Suggestions and comments are welcome | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the cosmological date sets, the cosmological parameters are constrained
in this paper, with some well known form of Hubble parameter. To understand the
dynamics of the Weyl type $f(Q,T)$, functional form $f(Q,T)$ has been
introduced, where $Q$ and $T$ respectively represents the nonmetricity scalar
and trace of... | [
{
"created": "Thu, 29 Feb 2024 07:12:48 GMT",
"version": "v1"
}
] | 2024-03-01 | [
[
"Bhagat",
"Rahul",
""
],
[
"Mishra",
"B.",
""
]
] | Using the cosmological date sets, the cosmological parameters are constrained in this paper, with some well known form of Hubble parameter. To understand the dynamics of the Weyl type $f(Q,T)$, functional form $f(Q,T)$ has been introduced, where $Q$ and $T$ respectively represents the nonmetricity scalar and trace of e... |
gr-qc/0405129 | Jiliang Jing | Qiyuan Pan and Jiliang Jing | Asymptotic tails of massive scalar fields in a stationary axisymmetric
EMDA black hole geometry | 6 pages | Chin.Phys.Lett. 21 (2004) 1873-1876 | 10.1088/0256-307X/21/10/002 | null | gr-qc astro-ph hep-th | null | The late-time tail behavior of massive scalar fields is studied analytically
in a stationary axisymmetric EMDA black hole geometry. It is shown that the
asymptotic behavior of massive perturbations is dominated by the oscillatory
inverse power-law decaying tail $ t^{-(l+3/2)}\sin(\mu t)$ at the intermediate
late time... | [
{
"created": "Wed, 26 May 2004 08:47:36 GMT",
"version": "v1"
},
{
"created": "Sun, 30 May 2004 01:52:48 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Pan",
"Qiyuan",
""
],
[
"Jing",
"Jiliang",
""
]
] | The late-time tail behavior of massive scalar fields is studied analytically in a stationary axisymmetric EMDA black hole geometry. It is shown that the asymptotic behavior of massive perturbations is dominated by the oscillatory inverse power-law decaying tail $ t^{-(l+3/2)}\sin(\mu t)$ at the intermediate late times,... |
0809.3190 | Igor Khavkine | Igor Khavkine | Evaluation of new spin foam vertex amplitudes | 34 pages, 8 figures, amsrefs; v3: merged with 0810.1653, updated
bibl., version submitted to CQG | Class.Quant.Grav.26:125012,2009 | 10.1088/0264-9381/26/12/125012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Christensen-Egan algorithm is extended and generalized to efficiently
evaluate new spin foam vertex amplitudes proposed by Engle, Pereira & Rovelli
and Freidel & Krasnov, with or without (factored) boundary states. A concrete
pragmatic proposal is made for comparing the different models using uniform
methodologie... | [
{
"created": "Thu, 18 Sep 2008 15:33:37 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Oct 2008 19:31:55 GMT",
"version": "v2"
},
{
"created": "Fri, 31 Jul 2009 09:48:12 GMT",
"version": "v3"
}
] | 2009-11-19 | [
[
"Khavkine",
"Igor",
""
]
] | The Christensen-Egan algorithm is extended and generalized to efficiently evaluate new spin foam vertex amplitudes proposed by Engle, Pereira & Rovelli and Freidel & Krasnov, with or without (factored) boundary states. A concrete pragmatic proposal is made for comparing the different models using uniform methodologies,... |
2112.08365 | Bivudutta Mishra Dr. | B.Mishra, A.S. Agrawal, S.K. Tripathy, S. Ray | Traversable wormhole models in $f(R)$ gravity | 13 pages, 18 figures, Accepted version in IJMPA | International Journal of Modern Physics A, 37, 2250010, 2022 | 10.1142/S0217751X22500105 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we analyze the wormhole solutions in $f(R)$ gravity.
Specifically we sought for wormhole geometry solutions for the following three
shape functions: (i)
$b(r)=r_{0}+\rho_{0}r_{0}^{3}\ln\left(\frac{r_{0}}{r}\right)$, (ii)
$b(r)=r_{0}+\gamma r_{0}\left(1-\dfrac{r_{0}}{r}\right)$, and (iii)
$b(r)=\alpha +\... | [
{
"created": "Wed, 15 Dec 2021 05:11:11 GMT",
"version": "v1"
}
] | 2022-04-22 | [
[
"Mishra",
"B.",
""
],
[
"Agrawal",
"A. S.",
""
],
[
"Tripathy",
"S. K.",
""
],
[
"Ray",
"S.",
""
]
] | In this work, we analyze the wormhole solutions in $f(R)$ gravity. Specifically we sought for wormhole geometry solutions for the following three shape functions: (i) $b(r)=r_{0}+\rho_{0}r_{0}^{3}\ln\left(\frac{r_{0}}{r}\right)$, (ii) $b(r)=r_{0}+\gamma r_{0}\left(1-\dfrac{r_{0}}{r}\right)$, and (iii) $b(r)=\alpha +\be... |
2310.16250 | Piero A. P. Molinari | Piero A. P. Molinari, Paola C. M. Delgado, Rodrigo F. Pinheiro, Nelson
Pinto-Neto | Radiation-dominated bouncing model with slow contraction and inflation | 14 pages, 5 figures | Phys. Rev. D 109, 043531 (2024) | 10.1103/PhysRevD.109.043531 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A very simple non-singular inflationary model is presented where the unique
matter content is a radiation fluid. The model slowly contracts from a very
large, almost empty and flat spacetime and realizes a bounce. It is then
launched to a quasi-de Sitter inflationary expansion with more than sixty
e-folds, which smoo... | [
{
"created": "Tue, 24 Oct 2023 23:49:40 GMT",
"version": "v1"
}
] | 2024-03-08 | [
[
"Molinari",
"Piero A. P.",
""
],
[
"Delgado",
"Paola C. M.",
""
],
[
"Pinheiro",
"Rodrigo F.",
""
],
[
"Pinto-Neto",
"Nelson",
""
]
] | A very simple non-singular inflationary model is presented where the unique matter content is a radiation fluid. The model slowly contracts from a very large, almost empty and flat spacetime and realizes a bounce. It is then launched to a quasi-de Sitter inflationary expansion with more than sixty e-folds, which smooth... |
1805.07312 | Luca Bombelli | Mir Emad Aghili, Luca Bombelli, B.B. Pilgrim | Path length distribution in two-dimensional causal sets | 9 pages, 5 figures | Eur. Phys. J. C (2018) 78: 744 | 10.1140/epjc/s10052-018-6229-7 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the distribution of maximal-chain lengths between two elements of a
causal set and its relationship with the embeddability of the causal set in a
region of flat spacetime. We start with causal sets obtained from uniformly
distributed points in Minkowski space. After some general considerations we
focus on th... | [
{
"created": "Fri, 18 May 2018 16:23:15 GMT",
"version": "v1"
}
] | 2018-09-18 | [
[
"Aghili",
"Mir Emad",
""
],
[
"Bombelli",
"Luca",
""
],
[
"Pilgrim",
"B. B.",
""
]
] | We study the distribution of maximal-chain lengths between two elements of a causal set and its relationship with the embeddability of the causal set in a region of flat spacetime. We start with causal sets obtained from uniformly distributed points in Minkowski space. After some general considerations we focus on the ... |
gr-qc/0001077 | Pedro Marronetti | P. Marronetti (1), M. Huq (2), P. Laguna (2), L. Lehner (1), R.
Matzner (1), D. Shoemaker (2). ((1) The University of Texas at Austin, (2)
Penn State University) | Approximate Analytical Solutions to the Initial Data Problem of Black
Hole Binary Systems | 6 pages, 5 postscript figures. Minor changes and some points
clarified. Accepted for publication in Phys. Rev. D | Phys.Rev. D62 (2000) 024017 | 10.1103/PhysRevD.62.024017 | null | gr-qc | null | We present approximate analytical solutions to the Hamiltonian and momentum
constraint equations, corresponding to systems composed of two black holes with
arbitrary linear and angular momentum. The analytical nature of these initial
data solutions makes them easier to implement in numerical evolutions than the
tradi... | [
{
"created": "Mon, 24 Jan 2000 23:03:16 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Apr 2000 21:31:41 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Marronetti",
"P.",
""
],
[
"Huq",
"M.",
""
],
[
"Laguna",
"P.",
""
],
[
"Lehner",
"L.",
""
],
[
"Matzner",
"R.",
""
],
[
"Shoemaker",
"D.",
""
],
[
".",
"",
""
]
] | We present approximate analytical solutions to the Hamiltonian and momentum constraint equations, corresponding to systems composed of two black holes with arbitrary linear and angular momentum. The analytical nature of these initial data solutions makes them easier to implement in numerical evolutions than the traditi... |
2208.00618 | Reggie Pantig | Nikko John Leo S. Lobos, Reggie C. Pantig | Generalized Extended Uncertainty Principle Black Holes: Shadow and
lensing in the macro- and microscopic realms | 9 pages, 7 figures | Physics 2022, 4, 13181330 | 10.3390/physics4040084 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the recent work about the Extended Uncertainty Principle (EUP)
black holes \cite{Mureika:2018gxl}, we present in this study its extension
called the Generalized Extended Uncertainty Principle (GEUP) black holes. In
particular, we investigated the GEUP effects on astrophysical and micro-black
holes. First... | [
{
"created": "Mon, 1 Aug 2022 05:37:51 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Dec 2023 04:42:09 GMT",
"version": "v2"
}
] | 2023-12-08 | [
[
"Lobos",
"Nikko John Leo S.",
""
],
[
"Pantig",
"Reggie C.",
""
]
] | Motivated by the recent work about the Extended Uncertainty Principle (EUP) black holes \cite{Mureika:2018gxl}, we present in this study its extension called the Generalized Extended Uncertainty Principle (GEUP) black holes. In particular, we investigated the GEUP effects on astrophysical and micro-black holes. First, ... |
1201.5433 | Carla Cederbaum | Carla Cederbaum | The Newtonian Limit of Geometrostatics | 111 pages, 1 figure, dissertation | null | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This thesis discusses the Newtonian limit of General Relativity for static
isolated systems with compactly supported matter. We call these systems
"geometrostatic" to underline their geometric nature. We introduce new
quasi-local notions of mass and center of mass that can be read off locally in
the vicinity of the m... | [
{
"created": "Thu, 26 Jan 2012 02:53:48 GMT",
"version": "v1"
}
] | 2012-01-27 | [
[
"Cederbaum",
"Carla",
""
]
] | This thesis discusses the Newtonian limit of General Relativity for static isolated systems with compactly supported matter. We call these systems "geometrostatic" to underline their geometric nature. We introduce new quasi-local notions of mass and center of mass that can be read off locally in the vicinity of the mat... |
2402.17312 | Ameek Malhotra | N. M. Jim\'enez Cruz, Ameek Malhotra, Gianmassimo Tasinato, Ivonne
Zavala | Measuring kinematic anisotropies with pulsar timing arrays | 29 pages, 6 figures. V2: corrected upper limit, updated forecasts | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | Recent Pulsar Timing Array (PTA) collaborations show strong evidence for a
stochastic gravitational wave background (SGWB) with the characteristic
Hellings-Downs inter-pulsar correlations. The signal may stem from supermassive
black hole binary mergers, or early universe phenomena. The former is expected
to be strong... | [
{
"created": "Tue, 27 Feb 2024 08:33:31 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Jun 2024 14:03:59 GMT",
"version": "v2"
}
] | 2024-06-10 | [
[
"Cruz",
"N. M. Jiménez",
""
],
[
"Malhotra",
"Ameek",
""
],
[
"Tasinato",
"Gianmassimo",
""
],
[
"Zavala",
"Ivonne",
""
]
] | Recent Pulsar Timing Array (PTA) collaborations show strong evidence for a stochastic gravitational wave background (SGWB) with the characteristic Hellings-Downs inter-pulsar correlations. The signal may stem from supermassive black hole binary mergers, or early universe phenomena. The former is expected to be strongly... |
2107.00620 | Andronikos Paliathanasis | Andronikos Paliathanasis | $f(T)$ Cosmology with Nonzero Curvature | 13 pages, no figures, reference list updated | null | 10.1142/S0217732321502618 | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We investigate exact and analytic solutions in $f\left( T\right) $ gravity
within the context of a Friedmann--Lema\^{\i}tre--Robertson--Walker background
space with nonzero spatial curvature. For the power law theory $f\left(
T\right) =T^{n}$ we find that the field equations admit an exact solution with
a linear scal... | [
{
"created": "Thu, 1 Jul 2021 17:16:39 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Jul 2021 15:43:00 GMT",
"version": "v2"
}
] | 2022-01-05 | [
[
"Paliathanasis",
"Andronikos",
""
]
] | We investigate exact and analytic solutions in $f\left( T\right) $ gravity within the context of a Friedmann--Lema\^{\i}tre--Robertson--Walker background space with nonzero spatial curvature. For the power law theory $f\left( T\right) =T^{n}$ we find that the field equations admit an exact solution with a linear scalar... |
1205.4452 | Paul Wesson | Paul S. Wesson | Particles, Waves and Vacuum in Five Dimensions: A Status Report | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Since the 5D canonical metric embeds all 4D vacuum solutions of Einstein's
equations, I review its application to the cosmological 'constant', quantized
particles, deBroglie waves, scalar fields and wave-particle duality. There are
several ways to ra-tionalize these things using an extra dimension. A possible
explana... | [
{
"created": "Sun, 20 May 2012 19:56:07 GMT",
"version": "v1"
}
] | 2012-05-22 | [
[
"Wesson",
"Paul S.",
""
]
] | Since the 5D canonical metric embeds all 4D vacuum solutions of Einstein's equations, I review its application to the cosmological 'constant', quantized particles, deBroglie waves, scalar fields and wave-particle duality. There are several ways to ra-tionalize these things using an extra dimension. A possible explanati... |
1409.1018 | C. Q. Geng | Chao-Qiang Geng, Chang Lai, Ling-Wei Luo, Huan-Hsin Tseng | Kaluza-Klein theory for teleparallel gravity | 8 pages, no figure, Phys. Lett. B737 (2014) 248-250 | Phys. Lett. B737 (2014) 248-250 | 10.1016/j.physletb.2014.08.055 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study teleparallel gravity in the \emph{original} Kaluza-Klein (KK)
scenario. Our calculation of the KK reduction of teleparallel gravity indicates
that the 5-dimensional torsion scalar $^{(5)}T$ generates the non-Brans-Dicke
type effective Lagrangian in 4-dimension due to an additional coupling between
the deriva... | [
{
"created": "Wed, 3 Sep 2014 10:08:41 GMT",
"version": "v1"
}
] | 2014-09-04 | [
[
"Geng",
"Chao-Qiang",
""
],
[
"Lai",
"Chang",
""
],
[
"Luo",
"Ling-Wei",
""
],
[
"Tseng",
"Huan-Hsin",
""
]
] | We study teleparallel gravity in the \emph{original} Kaluza-Klein (KK) scenario. Our calculation of the KK reduction of teleparallel gravity indicates that the 5-dimensional torsion scalar $^{(5)}T$ generates the non-Brans-Dicke type effective Lagrangian in 4-dimension due to an additional coupling between the derivati... |
gr-qc/9410019 | Peter Marzlin | Karl-Peter Marzlin | The Dipole Coupling of Atoms and Light in Gravitational Fields | 10 pages, LaTeX | Phys.Rev. A51 (1995) 625 | 10.1103/PhysRevA.51.625 | null | gr-qc | null | The dipole coupling term between a system of N particles with total charge
zero and the electromagnetic field is derived in the presence of a weak
gravitational field. It is shown that the form of the coupling remains the same
as in flat space-time if it is written with respect to the proper time of the
observer and ... | [
{
"created": "Mon, 17 Oct 1994 11:50:28 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Marzlin",
"Karl-Peter",
""
]
] | The dipole coupling term between a system of N particles with total charge zero and the electromagnetic field is derived in the presence of a weak gravitational field. It is shown that the form of the coupling remains the same as in flat space-time if it is written with respect to the proper time of the observer and to... |
1205.5087 | Shahar Hod | Shahar Hod | Quasinormal resonances of a charged scalar field in a charged
Reissner-Nordstr\"om black hole spacetime: A WKB analysis | 5 pages. arXiv admin note: text overlap with arXiv:1109.4080 | Phys. Lett. B {\bf 710}, 349 (2012) | 10.1016/j.physletb.2012.03.010 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The fundamental quasinormal resonances of charged Reissner-Nordstr\"om black
holes due to charged scalar perturbations are derived {\it analytically}. In
the WKB regime, $qQ\gg\hbar$, we obtain a simple expression for the fundamental
quasinormal resonances: $\omega=qQ/r_+-i2\pi T_{\text{BH}}(n+{1 \over 2})$,
where $T... | [
{
"created": "Wed, 23 May 2012 03:57:16 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Hod",
"Shahar",
""
]
] | The fundamental quasinormal resonances of charged Reissner-Nordstr\"om black holes due to charged scalar perturbations are derived {\it analytically}. In the WKB regime, $qQ\gg\hbar$, we obtain a simple expression for the fundamental quasinormal resonances: $\omega=qQ/r_+-i2\pi T_{\text{BH}}(n+{1 \over 2})$, where $T_{... |
2106.03177 | Vinod Bhardwaj Dr. | Vinod Kumar Bhardwaj, Anirudh Pradhan | Evaluation of cosmological models in $f(R, T)$ gravity in different dark
energy scenario | 20 pages, 16 figures | null | 10.1016/j.newast.2021.101675 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In present paper, we search the existence of dark energy scalar field models
within in $f(R, T)$ gravity theory established by Harko et al. (Phys. Rev. D
84, 024020, 2011) in a flat FRW universe. The correspondence between scalar
field models have been examined by employing new generalized dynamical
cosmological term... | [
{
"created": "Sun, 6 Jun 2021 16:49:58 GMT",
"version": "v1"
}
] | 2021-09-08 | [
[
"Bhardwaj",
"Vinod Kumar",
""
],
[
"Pradhan",
"Anirudh",
""
]
] | In present paper, we search the existence of dark energy scalar field models within in $f(R, T)$ gravity theory established by Harko et al. (Phys. Rev. D 84, 024020, 2011) in a flat FRW universe. The correspondence between scalar field models have been examined by employing new generalized dynamical cosmological term $... |
2408.05417 | Shaoyu Yin | Zibo Shen, Anzhong Wang, Shaoyu Yin | A Class of Analytical Models for Black holes Surrounded by Dark Matter
Halos | 5 pages, no figures | null | null | null | gr-qc astro-ph.CO hep-ph | http://creativecommons.org/licenses/by/4.0/ | We present a class of analytic models for a dark matter halo surrounding a
Schwarzschild black hole sitting at the center of a galaxy, with a variable
inner radius $r_{\text{in}}$, at which the density profile of the dark matter
halo vanishes. We examine in detail how the three energy conditions are
satisfied in such... | [
{
"created": "Sat, 10 Aug 2024 03:00:08 GMT",
"version": "v1"
}
] | 2024-08-13 | [
[
"Shen",
"Zibo",
""
],
[
"Wang",
"Anzhong",
""
],
[
"Yin",
"Shaoyu",
""
]
] | We present a class of analytic models for a dark matter halo surrounding a Schwarzschild black hole sitting at the center of a galaxy, with a variable inner radius $r_{\text{in}}$, at which the density profile of the dark matter halo vanishes. We examine in detail how the three energy conditions are satisfied in such m... |
1507.01153 | Andrea Dapor | Emanuele Alesci, Andrea Dapor, Jerzy Lewandowski, Ilkka Makinen, Jan
Sikorski | Coherent State Operators in Loop Quantum Gravity | 34 pages, 4 figures (plus many pretty diagrams) | Phys. Rev. D 92, 104023 (2015) | 10.1103/PhysRevD.92.104023 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new method for constructing operators in loop quantum gravity.
The construction is an application of the general idea of "coherent state
quantization", which allows one to associate a unique quantum operator to every
function on a classical phase space. Using the heat kernel coherent states of
Hall and T... | [
{
"created": "Sat, 4 Jul 2015 23:07:28 GMT",
"version": "v1"
}
] | 2015-11-18 | [
[
"Alesci",
"Emanuele",
""
],
[
"Dapor",
"Andrea",
""
],
[
"Lewandowski",
"Jerzy",
""
],
[
"Makinen",
"Ilkka",
""
],
[
"Sikorski",
"Jan",
""
]
] | We present a new method for constructing operators in loop quantum gravity. The construction is an application of the general idea of "coherent state quantization", which allows one to associate a unique quantum operator to every function on a classical phase space. Using the heat kernel coherent states of Hall and Thi... |
2010.05945 | Tanuman Ghosh | Tanuman Ghosh (RRI), Banibrata Mukhopadhyay (IISc) | Geometric phase for Dirac Hamiltonian under gravitational fields in the
non-relativistic regime | 15 pages including 1 figure, slightly modified title; version to
appear in IJMPD | null | 10.1142/S0218271821500905 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show the appearance of geometric phase in a Dirac particle traversing in
non-relativistic limit in a time-independent gravitational field. This turns
out to be similar to the one originally described as a geometric phase in
magnetic fields. We explore the geometric phase in the Kerr and Schwarzschild
geometries, w... | [
{
"created": "Mon, 12 Oct 2020 18:08:45 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Jun 2021 15:17:21 GMT",
"version": "v2"
}
] | 2021-10-27 | [
[
"Ghosh",
"Tanuman",
"",
"RRI"
],
[
"Mukhopadhyay",
"Banibrata",
"",
"IISc"
]
] | We show the appearance of geometric phase in a Dirac particle traversing in non-relativistic limit in a time-independent gravitational field. This turns out to be similar to the one originally described as a geometric phase in magnetic fields. We explore the geometric phase in the Kerr and Schwarzschild geometries, whi... |
gr-qc/0606104 | Frank L\"offler | Frank L\"offler, Luciano Rezzolla, Marcus Ansorg | Numerical evolutions of a black hole-neutron star system in full General
Relativity: I. Head-on collision | 16 pages, 12 figures | Phys. Rev. D 74, 104018 (2006) | 10.1103/PhysRevD.74.104018 | null | gr-qc | null | We present the first simulations in full General Relativity of the head-on
collision between a neutron star and a black hole of comparable mass. These
simulations are performed through the solution of the Einstein equations
combined with an accurate solution of the relativistic hydrodynamics equations
via high-resolu... | [
{
"created": "Fri, 23 Jun 2006 15:21:10 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Jun 2007 07:56:06 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Löffler",
"Frank",
""
],
[
"Rezzolla",
"Luciano",
""
],
[
"Ansorg",
"Marcus",
""
]
] | We present the first simulations in full General Relativity of the head-on collision between a neutron star and a black hole of comparable mass. These simulations are performed through the solution of the Einstein equations combined with an accurate solution of the relativistic hydrodynamics equations via high-resoluti... |
1008.1776 | Thomas-Paul Hack | Thomas-Paul Hack | On the Backreaction of Scalar and Spinor Quantum Fields in Curved
Spacetimes - From the Basic Foundations to Cosmological Applications | Ph.D. thesis, 262 pages, 5 figures | null | null | DESY-THESIS-2010-042 | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | First, the present work is concerned with generalising constructions and
results in quantum field theory on curved spacetimes from the well-known case
of the Klein-Gordon field to Dirac fields. To this end, the enlarged algebra of
observables of the Dirac field is constructed in the algebraic framework. This
algebra ... | [
{
"created": "Tue, 10 Aug 2010 19:21:24 GMT",
"version": "v1"
}
] | 2010-10-22 | [
[
"Hack",
"Thomas-Paul",
""
]
] | First, the present work is concerned with generalising constructions and results in quantum field theory on curved spacetimes from the well-known case of the Klein-Gordon field to Dirac fields. To this end, the enlarged algebra of observables of the Dirac field is constructed in the algebraic framework. This algebra co... |
2103.01249 | Mariam Bouhmadi-Lopez | Che-Yu Chen, Mariam Bouhmadi-L\'opez, Pisin Chen | Lessons from black hole quasinormal modes in modified gravity | 12 pages, 8 figures | Eur. Phys. J. Plus 136, (2021) no.2, 253 | 10.1140/epjp/s13360-021-01227-z | null | gr-qc astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quasinormal modes of perturbed black holes have recently gained much interest
because of their tight relations with the gravitational wave signals emitted
during the post-merger phase of a binary black hole coalescence. One of the
intriguing features of these modes is that they respect the no-hair theorem,
and hence,... | [
{
"created": "Mon, 1 Mar 2021 19:02:11 GMT",
"version": "v1"
}
] | 2021-03-03 | [
[
"Chen",
"Che-Yu",
""
],
[
"Bouhmadi-López",
"Mariam",
""
],
[
"Chen",
"Pisin",
""
]
] | Quasinormal modes of perturbed black holes have recently gained much interest because of their tight relations with the gravitational wave signals emitted during the post-merger phase of a binary black hole coalescence. One of the intriguing features of these modes is that they respect the no-hair theorem, and hence, t... |
0901.2063 | Romeo Brunetti | Romeo Brunetti, Klaus Fredenhagen | Quantum Field Theory on Curved Backgrounds | 19 pages, submitted for the Proceedings of the Kompaktkurs
"Quantenfeldtheorie auf gekruemmten Raumzeiten" held at Universitaet Potsdam,
Germany, in 8.-12.10.2007, organized by C. Baer and K. Fredenhagen | null | 10.1007/978-3-642-02780-2_5 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the status of (scalar) quantum field theory on curved spacetimes
using a novel formulation in terms of non linear functionals over the smooth
configuration fields. In particular, this entails also a new foundation of
locally covariant classical field theory. For all that, methods from microlocal
analysis co... | [
{
"created": "Wed, 14 Jan 2009 16:52:38 GMT",
"version": "v1"
}
] | 2015-05-13 | [
[
"Brunetti",
"Romeo",
""
],
[
"Fredenhagen",
"Klaus",
""
]
] | We review the status of (scalar) quantum field theory on curved spacetimes using a novel formulation in terms of non linear functionals over the smooth configuration fields. In particular, this entails also a new foundation of locally covariant classical field theory. For all that, methods from microlocal analysis comb... |
gr-qc/9312003 | Piotr Koc | Janusz Karkowski, Piotr Koc, Zdobyslaw Swierczynski | Penrose Inequality for Gravitational Waves | 5 pages, emTeX Version 3.0 [3a]. Submited to Class. and Quantum Grav | Class.Quant.Grav.11:1535-1538,1994 | 10.1088/0264-9381/11/6/017 | null | gr-qc | null | We investigate axially symmetric asymptotically flat vacuum self-gravitating
system. A class of initial data with apparent horizon was numerically
constructed. The examined solutions satisfy the Penrose inequality. The prior
analysis of a massive system and the present results suggest that either
massive or sourcefre... | [
{
"created": "Thu, 2 Dec 1993 10:55:09 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Karkowski",
"Janusz",
""
],
[
"Koc",
"Piotr",
""
],
[
"Swierczynski",
"Zdobyslaw",
""
]
] | We investigate axially symmetric asymptotically flat vacuum self-gravitating system. A class of initial data with apparent horizon was numerically constructed. The examined solutions satisfy the Penrose inequality. The prior analysis of a massive system and the present results suggest that either massive or sourcefree ... |
2301.00025 | Jahed Abedi | Jahed Abedi | Search for echoes on the edge of quantum black holes | 6 pages, 4 figures | null | null | null | gr-qc astro-ph.CO astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I perform an unprecedented template-based search for stimulated emission of
Hawking radiation (or Boltzmann echoes) by combining the gravitational wave
data from 65 binary black hole merger events observed by the LIGO/Virgo
collaboration. With a careful Bayesian inference approach, I found no
statistically significan... | [
{
"created": "Fri, 30 Dec 2022 19:00:05 GMT",
"version": "v1"
}
] | 2023-01-03 | [
[
"Abedi",
"Jahed",
""
]
] | I perform an unprecedented template-based search for stimulated emission of Hawking radiation (or Boltzmann echoes) by combining the gravitational wave data from 65 binary black hole merger events observed by the LIGO/Virgo collaboration. With a careful Bayesian inference approach, I found no statistically significant ... |
1811.05778 | Tanmoy Paul | Tanmoy Paul and Soumitra SenGupta | Scalaron tunneling and the fate of antisymmetric tensor fields in $F(R)$
gravity | 12 pages, 4 figures, additional calculations, figures and references.
CQG accepted | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The work provides a possible explanation of a well motivated question - why
the present universe is practically free from any noticeable footmarks of
higher rank antisymmetric tensor fields, despite having the signatures of
scalar, vector, fermion as well as symmetric rank 2 tensor field in the form of
gravity ? The ... | [
{
"created": "Tue, 13 Nov 2018 05:01:13 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Sep 2020 15:24:25 GMT",
"version": "v2"
}
] | 2020-09-17 | [
[
"Paul",
"Tanmoy",
""
],
[
"SenGupta",
"Soumitra",
""
]
] | The work provides a possible explanation of a well motivated question - why the present universe is practically free from any noticeable footmarks of higher rank antisymmetric tensor fields, despite having the signatures of scalar, vector, fermion as well as symmetric rank 2 tensor field in the form of gravity ? The ex... |
1404.5371 | P. A. Gonzalez | P. A. Gonzalez and Yerko Vasquez | Dirac Quasinormal Modes of New Type Black Holes in New Massive Gravity | improved version. arXiv admin note: text overlap with
arXiv:1306.5974, arXiv:1404.3172 | null | 10.1140/epjc/s10052-014-2969-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study new type black holes in three-dimensional New Massive Gravity and we
calculate analytically the quasinormal modes for fermionic perturbations for
some special cases. Then, we show that for these cases the new type black holes
are stable under fermionic field perturbations.
| [
{
"created": "Tue, 22 Apr 2014 02:45:38 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Apr 2014 15:37:00 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Gonzalez",
"P. A.",
""
],
[
"Vasquez",
"Yerko",
""
]
] | We study new type black holes in three-dimensional New Massive Gravity and we calculate analytically the quasinormal modes for fermionic perturbations for some special cases. Then, we show that for these cases the new type black holes are stable under fermionic field perturbations. |
2401.15134 | Ahmad Al-Badawi | Ahmad Al-Badawi and M.Q. Owaidat | Particle dynamics and shadow of a regular non-minimal magnetic black
hole | null | General Relativity and Gravitation, (2023) 55:131 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the dynamics of a test particle around a regular
black hole (BH) in a non-minimal Einstein Yang Mills (EYM) theory and examine
the BH shadow. The EYM theory is a non-minimally coupled theory in which
curvature couples to non-Abelian gauge fields. We investigate particle motion
with parameters ... | [
{
"created": "Fri, 26 Jan 2024 17:05:40 GMT",
"version": "v1"
}
] | 2024-01-30 | [
[
"Al-Badawi",
"Ahmad",
""
],
[
"Owaidat",
"M. Q.",
""
]
] | In this paper, we study the dynamics of a test particle around a regular black hole (BH) in a non-minimal Einstein Yang Mills (EYM) theory and examine the BH shadow. The EYM theory is a non-minimally coupled theory in which curvature couples to non-Abelian gauge fields. We investigate particle motion with parameters in... |
2007.09413 | Oleg Zaslavskii | O. B. Zaslavskii | Can a nonextremal black hole be a particle accelerator? | 19 pages. Typose corrected. Matches published version | Phys. Rev. D 102, 104004 (2020) | 10.1103/PhysRevD.102.104004 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider particle collisions in the background of a nonextremal black
hole. Two particles fall from infinity, particle 1 is fine-tuned (critical),
collision occurs in its turning point. The first example is the
Reissner-Nordstr\"{o}m (RN) one. If the energy at infinity $E_{1}$ is big
enough, the turning point is c... | [
{
"created": "Sat, 18 Jul 2020 11:46:45 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Oct 2020 15:25:34 GMT",
"version": "v2"
},
{
"created": "Sat, 7 Nov 2020 12:17:27 GMT",
"version": "v3"
}
] | 2020-11-11 | [
[
"Zaslavskii",
"O. B.",
""
]
] | We consider particle collisions in the background of a nonextremal black hole. Two particles fall from infinity, particle 1 is fine-tuned (critical), collision occurs in its turning point. The first example is the Reissner-Nordstr\"{o}m (RN) one. If the energy at infinity $E_{1}$ is big enough, the turning point is clo... |
2002.00377 | Lunchakorn Tannukij | Lunchakorn Tannukij, Pitayuth Wongjun, Ekapong Hirunsirisawat, Tanapat
Deesuwan, Chatchai Promsiri | Thermodynamics and Phase Transition of Spherically Symmetric Black Hole
in de Sitter Space from R\'enyi Statistics | 19 pages, 7 figures | Eur. Phys. J. Plus 135, 500 (2020) | 10.1140/epjp/s13360-020-00517-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Schwarzschild black holes in a de Sitter background were studied in terms of
their thermodynamics based on the R\'enyi statistics. This led to
thermodynamically stable black hole configurations for some certain range of
black hole radii; namely within this range the corresponding black holes have
positive heat capaci... | [
{
"created": "Sun, 2 Feb 2020 12:22:50 GMT",
"version": "v1"
}
] | 2020-07-10 | [
[
"Tannukij",
"Lunchakorn",
""
],
[
"Wongjun",
"Pitayuth",
""
],
[
"Hirunsirisawat",
"Ekapong",
""
],
[
"Deesuwan",
"Tanapat",
""
],
[
"Promsiri",
"Chatchai",
""
]
] | Schwarzschild black holes in a de Sitter background were studied in terms of their thermodynamics based on the R\'enyi statistics. This led to thermodynamically stable black hole configurations for some certain range of black hole radii; namely within this range the corresponding black holes have positive heat capacity... |
2307.01903 | Marius Adrian Oancea | Marius A. Oancea, Richard Stiskalek, Miguel Zumalac\'arregui | Probing general relativistic spin-orbit coupling with gravitational
waves from hierarchical triple systems | null | null | null | null | gr-qc astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Wave packets propagating in inhomogeneous media experience a coupling between
internal and external degrees of freedom and, as a consequence, follow
spin-dependent trajectories. These are known as spin Hall effects, which are
well known in optics and condensed matter physics. Similarly, the gravitational
spin Hall ef... | [
{
"created": "Tue, 4 Jul 2023 20:18:09 GMT",
"version": "v1"
}
] | 2023-07-06 | [
[
"Oancea",
"Marius A.",
""
],
[
"Stiskalek",
"Richard",
""
],
[
"Zumalacárregui",
"Miguel",
""
]
] | Wave packets propagating in inhomogeneous media experience a coupling between internal and external degrees of freedom and, as a consequence, follow spin-dependent trajectories. These are known as spin Hall effects, which are well known in optics and condensed matter physics. Similarly, the gravitational spin Hall effe... |
gr-qc/0407020 | Alberto Saa | Alberto Saa | On the viability of local criteria for chaos | 10 pages | Annals Phys. 314 (2004) 508-516 | 10.1016/j.aop.2004.08.008 | null | gr-qc | null | We consider here a recently proposed geometrical criterion for local
instability based on the geodesic deviation equation. Although such a criterion
can be useful in some cases, we show here that, in general, it is neither
necessary nor sufficient for the occurrence of chaos. To this purpose, we
introduce a class of ... | [
{
"created": "Tue, 6 Jul 2004 01:29:49 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Saa",
"Alberto",
""
]
] | We consider here a recently proposed geometrical criterion for local instability based on the geodesic deviation equation. Although such a criterion can be useful in some cases, we show here that, in general, it is neither necessary nor sufficient for the occurrence of chaos. To this purpose, we introduce a class of ch... |
gr-qc/9706065 | Janna Levin | John D. Barrow and Janna Levin | Chaos in the Einstein-Yang-Mills Equations | 3 pages LaTeX + 3 pages of figures | Phys.Rev.Lett. 80 (1998) 656-659 | 10.1103/PhysRevLett.80.656 | null | gr-qc hep-th | null | Yang-Mills color fields evolve chaotically in an anisotropically expanding
universe. The chaotic behaviour differs from that found in anisotropic
Mixmaster universes. The universe isotropizes at late times, approaching the
mean expansion rate of a radiation-dominated universe. However, small chaotic
oscillations of t... | [
{
"created": "Fri, 20 Jun 1997 19:30:27 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Barrow",
"John D.",
""
],
[
"Levin",
"Janna",
""
]
] | Yang-Mills color fields evolve chaotically in an anisotropically expanding universe. The chaotic behaviour differs from that found in anisotropic Mixmaster universes. The universe isotropizes at late times, approaching the mean expansion rate of a radiation-dominated universe. However, small chaotic oscillations of the... |
2404.06986 | Shahram Jalalzadeh | R. Jalalzadeh, S. Jalalzadeh, A. Sayahian Jahromi, and H. Moradpour | Friedmann equations of the fractal apparent horizon | 9 pages, 6 figures, to appear in Physics of the Dark Universe | null | null | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | From a fractal perspective, the entropy bound of gravitational systems
undergoes changes. Furthermore, in the cosmological setting, the conservation
law of a perfect fluid is also altered in such systems, affecting spatial
elements like volume, area, and radius. By applying the first law of
thermodynamics and derivin... | [
{
"created": "Wed, 10 Apr 2024 13:01:52 GMT",
"version": "v1"
}
] | 2024-04-11 | [
[
"Jalalzadeh",
"R.",
""
],
[
"Jalalzadeh",
"S.",
""
],
[
"Jahromi",
"A. Sayahian",
""
],
[
"Moradpour",
"H.",
""
]
] | From a fractal perspective, the entropy bound of gravitational systems undergoes changes. Furthermore, in the cosmological setting, the conservation law of a perfect fluid is also altered in such systems, affecting spatial elements like volume, area, and radius. By applying the first law of thermodynamics and deriving ... |
1807.01157 | Ritika Nagpal | J. K. Singh, Kazuharu Bamba, Ritika Nagpal, S. K. J. Pacif | Bouncing cosmology in $f(R,T)$ gravity | null | Phys.Rev. D97 (2018) no.12, 123536 | 10.1103/PhysRevD.97.123536 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A cosmological model with a specific form of the Hubble parameter is
constructed in a flat homogeneous, and isotropic background in the framework of
$f(R, T)$ gravity, where $R$ is the scalar curvature and $T$ is the trace of
the stress-energy-momentum tensor. The proposed functional form of the Hubble
parameter is t... | [
{
"created": "Sat, 30 Jun 2018 16:32:37 GMT",
"version": "v1"
}
] | 2018-07-04 | [
[
"Singh",
"J. K.",
""
],
[
"Bamba",
"Kazuharu",
""
],
[
"Nagpal",
"Ritika",
""
],
[
"Pacif",
"S. K. J.",
""
]
] | A cosmological model with a specific form of the Hubble parameter is constructed in a flat homogeneous, and isotropic background in the framework of $f(R, T)$ gravity, where $R$ is the scalar curvature and $T$ is the trace of the stress-energy-momentum tensor. The proposed functional form of the Hubble parameter is tak... |
1006.5272 | Lau Loi So | Lau Loi So | An unique alternative non-negative gravitational energy tensor to the
Bel-Robinson tensor in the quasilocal small sphere limit | 13 pages, a major revision of arXiv:0901.4828 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Bel-Robinson tensor $B_{\alpha\beta\mu\nu}$ gives a positive definite
gravitational energy in the quasilocal small sphere limit approximation.
However, there is an alternative tensor $V_{\alpha\beta\mu\nu}$ that was
proposed recently that offers the same positivity as $B_{\alpha\beta\mu\nu}$
does. We have found t... | [
{
"created": "Mon, 28 Jun 2010 06:37:27 GMT",
"version": "v1"
}
] | 2010-06-29 | [
[
"So",
"Lau Loi",
""
]
] | The Bel-Robinson tensor $B_{\alpha\beta\mu\nu}$ gives a positive definite gravitational energy in the quasilocal small sphere limit approximation. However, there is an alternative tensor $V_{\alpha\beta\mu\nu}$ that was proposed recently that offers the same positivity as $B_{\alpha\beta\mu\nu}$ does. We have found tha... |
1304.5627 | Muxin Han | Muxin Han | On Spinfoam Models in Large Spin Regime | 20 pages, no figure, presentation improved, published version | Class. Quantum Grav. 31 (2014) 015004 | 10.1088/0264-9381/31/1/015004 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the semiclassical behavior of Lorentzian
Engle-Pereira-Rovelli-Livine (EPRL) spinfoam model, by taking into account the
sum over spins in the large spin regime. We also employ the method of
stationary phase analysis with parameters and the so called, almost-analytic
machinery, in order to find the asymptotic... | [
{
"created": "Sat, 20 Apr 2013 12:34:57 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Aug 2013 16:50:27 GMT",
"version": "v2"
},
{
"created": "Fri, 15 Nov 2013 11:55:08 GMT",
"version": "v3"
}
] | 2013-11-18 | [
[
"Han",
"Muxin",
""
]
] | We study the semiclassical behavior of Lorentzian Engle-Pereira-Rovelli-Livine (EPRL) spinfoam model, by taking into account the sum over spins in the large spin regime. We also employ the method of stationary phase analysis with parameters and the so called, almost-analytic machinery, in order to find the asymptotic b... |
1306.6087 | Joseph Keir | Joe Keir | Stability, Instability, Canonical Energy and Charged Black Holes | 31 pages | null | 10.1088/0264-9381/31/3/035014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the canonical energy method of Hollands and Wald to study the
stability properties of asymptotically flat, stationary solutions to a very
general class of theories, consisting of a set of coupled scalar fields and
p-form gauge fields, minimally coupled to gravity. We find that, provided
certain very weak assum... | [
{
"created": "Tue, 25 Jun 2013 20:41:57 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Keir",
"Joe",
""
]
] | We use the canonical energy method of Hollands and Wald to study the stability properties of asymptotically flat, stationary solutions to a very general class of theories, consisting of a set of coupled scalar fields and p-form gauge fields, minimally coupled to gravity. We find that, provided certain very weak assumpt... |
gr-qc/0307108 | Pavel Krtous | Jiri Podolsky, Marcello Ortaggio, and Pavel Krtous | Radiation from accelerated black holes in an anti-de Sitter universe | 19 pages, 11 colour figures, submitted to Phys. Rev. D [Low quality
figures are included in this version because of arXive size restrictions. The
version with the standard quality figures is available at
http://utf.mff.cuni.cz/~podolsky/jppubl.htm.] | Phys.Rev. D68 (2003) 124004 | 10.1103/PhysRevD.68.124004 | null | gr-qc hep-th | null | We study gravitational and electromagnetic radiation generated by uniformly
accelerated charged black holes in anti-de Sitter spacetime. This is described
by the C-metric exact solution of the Einstein-Maxwell equations with a
negative cosmological constant Lambda. We explicitly find and interpret the
pattern of radi... | [
{
"created": "Fri, 25 Jul 2003 16:37:06 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Dec 2003 15:05:04 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Podolsky",
"Jiri",
""
],
[
"Ortaggio",
"Marcello",
""
],
[
"Krtous",
"Pavel",
""
]
] | We study gravitational and electromagnetic radiation generated by uniformly accelerated charged black holes in anti-de Sitter spacetime. This is described by the C-metric exact solution of the Einstein-Maxwell equations with a negative cosmological constant Lambda. We explicitly find and interpret the pattern of radiat... |
2203.03536 | Federico De Lillo | Federico De Lillo, Jishnu Suresh, Andrew L. Miller | Stochastic gravitational-wave background searches and constraints on
neutron-star ellipticity | 10 pages, 6 figures, 2 tables | null | 10.1093/mnras/stac984 | LIGO-P2200050 | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Rotating neutron stars (NSs) are promising sources of gravitational waves
(GWs) in the frequency band of ground-based detectors. They are expected to
emit quasi-monochromatic, long-duration GW signals, called continuous waves
(CWs), due to their deviations from spherical symmetry. The degree of such
deformations, and... | [
{
"created": "Mon, 7 Mar 2022 17:41:09 GMT",
"version": "v1"
}
] | 2022-04-20 | [
[
"De Lillo",
"Federico",
""
],
[
"Suresh",
"Jishnu",
""
],
[
"Miller",
"Andrew L.",
""
]
] | Rotating neutron stars (NSs) are promising sources of gravitational waves (GWs) in the frequency band of ground-based detectors. They are expected to emit quasi-monochromatic, long-duration GW signals, called continuous waves (CWs), due to their deviations from spherical symmetry. The degree of such deformations, and h... |
2209.04348 | Pardyumn Kumar Sahoo | Gaurav N. Gadbail, Simran Arora, Praveen Kumar, P.K. Sahoo | Interaction of divergence-free deceleration parameter in Weyl-type
$f(Q,T)$ gravity | Chinese Journal of Physics published version | Chinese Journal of Physics, 79 (2022) 246-255 | 10.1016/j.cjph.2022.09.005 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study an extension of symmetric teleparallel gravity i.e. Weyl-type
$f(Q,T)$ gravity and the divergence-free parametrization of the deceleration
parameter $q(z) = q_{0}+q_{1}\frac{z(1+z)}{1+z^2}$ ($q_{0}$ and $q_{1}$ are
free constants) to explore the evolution of the universe. By considering the
above parametric ... | [
{
"created": "Thu, 8 Sep 2022 00:50:22 GMT",
"version": "v1"
}
] | 2022-09-20 | [
[
"Gadbail",
"Gaurav N.",
""
],
[
"Arora",
"Simran",
""
],
[
"Kumar",
"Praveen",
""
],
[
"Sahoo",
"P. K.",
""
]
] | We study an extension of symmetric teleparallel gravity i.e. Weyl-type $f(Q,T)$ gravity and the divergence-free parametrization of the deceleration parameter $q(z) = q_{0}+q_{1}\frac{z(1+z)}{1+z^2}$ ($q_{0}$ and $q_{1}$ are free constants) to explore the evolution of the universe. By considering the above parametric fo... |
2111.06990 | David Reitze | Vicky Kalogera, B.S. Sathyaprakash, Matthew Bailes, Marie-Anne
Bizouard, Alessandra Buonanno, Adam Burrows, Monica Colpi, Matt Evans,
Stephen Fairhurst, Stefan Hild, Mansi M. Kasliwal, Luis Lehner, Ilya Mandel,
Vuk Mandic, Samaya Nissanke, Maria Alessandra Papa, Sanjay Reddy, Stephan
Rosswog, Chris Van Den Broe... | The Next Generation Global Gravitational Wave Observatory: The Science
Book | 69 pages, 18 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The next generation of ground-based gravitational-wave detectors will observe
coalescences of black holes and neutron stars throughout the cosmos, thousands
of them with exceptional fidelity. The Science Book is the result of a 3-year
effort to study the science capabilities of networks of next generation
detectors. ... | [
{
"created": "Fri, 12 Nov 2021 23:46:10 GMT",
"version": "v1"
}
] | 2021-11-16 | [
[
"Kalogera",
"Vicky",
""
],
[
"Sathyaprakash",
"B. S.",
""
],
[
"Bailes",
"Matthew",
""
],
[
"Bizouard",
"Marie-Anne",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Burrows",
"Adam",
""
],
[
"Colpi",
"Monica",
... | The next generation of ground-based gravitational-wave detectors will observe coalescences of black holes and neutron stars throughout the cosmos, thousands of them with exceptional fidelity. The Science Book is the result of a 3-year effort to study the science capabilities of networks of next generation detectors. Su... |
2402.09312 | N. Rieger | N. E. Rieger | Topologies of maximally extended non-Hausdorff Misner Space | null | null | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Misner (1967) space is a portion of 2-dimensional Minkowski spacetime,
identified under a boost $\mathcal B$. It is well known that the maximal
analytic extension of Misner space that is Hausdorff consists of one half of
Minkowski spacetime, identified under $\mathcal B$; and Hawking and Ellis
(1973) have shown that ... | [
{
"created": "Wed, 14 Feb 2024 16:59:06 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Jun 2024 21:52:49 GMT",
"version": "v2"
}
] | 2024-06-27 | [
[
"Rieger",
"N. E.",
""
]
] | Misner (1967) space is a portion of 2-dimensional Minkowski spacetime, identified under a boost $\mathcal B$. It is well known that the maximal analytic extension of Misner space that is Hausdorff consists of one half of Minkowski spacetime, identified under $\mathcal B$; and Hawking and Ellis (1973) have shown that th... |
0905.2742 | Douglas A. Singleton | Emil T. Akhmedov, P. V. Buividovich, Douglas A. Singleton | De Sitter space and perpetuum mobile | 11 pages revtex, no figures. Added discussion to strengthen
conclusion | null | 10.1134/S1063778812040023 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give general arguments that any interacting non--conformal {\it classical}
field theory in de Sitter space leads to the possibility of constructing a
perpetuum mobile. The arguments are based on the observation that massive free
falling particles can radiate other massive particles on the classical level as
seen b... | [
{
"created": "Sun, 17 May 2009 14:44:22 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Jan 2010 20:21:34 GMT",
"version": "v2"
},
{
"created": "Sun, 14 Feb 2010 22:46:20 GMT",
"version": "v3"
}
] | 2015-05-13 | [
[
"Akhmedov",
"Emil T.",
""
],
[
"Buividovich",
"P. V.",
""
],
[
"Singleton",
"Douglas A.",
""
]
] | We give general arguments that any interacting non--conformal {\it classical} field theory in de Sitter space leads to the possibility of constructing a perpetuum mobile. The arguments are based on the observation that massive free falling particles can radiate other massive particles on the classical level as seen by ... |
0804.4326 | Babak Vakili | B. Vakili, N. Khosravi and H. R. Sepangi | Thermodynamics of noncommutative de Sitter spacetime | 11 pages, no figures, accepted for publication in IJMPD | Int.J.Mod.Phys.D18:159-171,2009 | 10.1142/S0218271809014297 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effects of noncommutativity of spacetime geometry on the
thermodynamical properties of the de Sitter horizon. We show that
noncommutativity results in modifications in temperature, entropy and vacuum
energy and that these modifications are of order of the Planck scale,
suggesting that the size of the non... | [
{
"created": "Mon, 28 Apr 2008 06:12:14 GMT",
"version": "v1"
}
] | 2009-03-24 | [
[
"Vakili",
"B.",
""
],
[
"Khosravi",
"N.",
""
],
[
"Sepangi",
"H. R.",
""
]
] | We study the effects of noncommutativity of spacetime geometry on the thermodynamical properties of the de Sitter horizon. We show that noncommutativity results in modifications in temperature, entropy and vacuum energy and that these modifications are of order of the Planck scale, suggesting that the size of the nonco... |
0902.4081 | Sachie Shiomi | Sachie Shiomi | Testing gravitational physics with superconducting gravimeters | Proceedings for VIII Asia-Pacific International Conference on
Gravitation and Astrophysics (ICGA8) | Progress of Theoretical Physics Supplement No. 172, 2008 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Superconducting gravimeters are the most sensitive instruments to measure
surface gravity changes at low frequencies. Currently, about twenty five
superconducting gravimeters are operating in the world and their global network
has been developed. We investigate possible applications of the superconducting
gravimeters... | [
{
"created": "Tue, 24 Feb 2009 07:48:24 GMT",
"version": "v1"
}
] | 2009-09-30 | [
[
"Shiomi",
"Sachie",
""
]
] | Superconducting gravimeters are the most sensitive instruments to measure surface gravity changes at low frequencies. Currently, about twenty five superconducting gravimeters are operating in the world and their global network has been developed. We investigate possible applications of the superconducting gravimeters t... |
1706.03541 | Jerzy Kr\'ol | Michael Heller and Jerzy Kr\'ol | Gravity in the smallest | 19 pages | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Synthetic Differential Geometry (SDG) is a categorical version of
differential geometry based on enriching the real line with infinitesimals and
weakening of classical logic to intuitionistic logic. We show that SDG provides
an effective mathematical tool to formulate general relativity in
infinitesimally small domai... | [
{
"created": "Mon, 12 Jun 2017 09:58:59 GMT",
"version": "v1"
}
] | 2017-06-13 | [
[
"Heller",
"Michael",
""
],
[
"Król",
"Jerzy",
""
]
] | Synthetic Differential Geometry (SDG) is a categorical version of differential geometry based on enriching the real line with infinitesimals and weakening of classical logic to intuitionistic logic. We show that SDG provides an effective mathematical tool to formulate general relativity in infinitesimally small domains... |
1212.0138 | Xuefeng Zhang PhD | Xuefeng Zhang and Daniel Finley | Interpretation of twisting type N vacuum solutions with cosmological
constant | 12 pages | Class. Quantum Grav. 30 (2013) 075021 | 10.1088/0264-9381/30/7/075021 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate a new class of twisting type N vacuum solutions with nonzero
(positive) cosmological constant Lambda by studying the equations of geodesic
deviations along the privileged radial timelike geodesics, generalizing J.
Bicak and J. Podolsky's results on non-twisting type N solutions. It is shown
that these ... | [
{
"created": "Sat, 1 Dec 2012 17:41:33 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Mar 2013 17:29:06 GMT",
"version": "v2"
}
] | 2013-03-15 | [
[
"Zhang",
"Xuefeng",
""
],
[
"Finley",
"Daniel",
""
]
] | We investigate a new class of twisting type N vacuum solutions with nonzero (positive) cosmological constant Lambda by studying the equations of geodesic deviations along the privileged radial timelike geodesics, generalizing J. Bicak and J. Podolsky's results on non-twisting type N solutions. It is shown that these tw... |
gr-qc/9812041 | John T. Whelan | John T. Whelan (Uni. Bern) and Joseph D. Romano (U Texas-Brownsville) | Quasistationary binary inspiral. I. Einstein equations for the two
Killing vector spacetime | 37 pages, REVTeX, one PostScript Figure included with epsfig; minor
formatting changes and copyright notice added for journal publication | Phys. Rev. D 60, 084009 (1999) | 10.1103/PhysRevD.60.084009 | null | gr-qc | null | The geometry of two infinitely long lines of mass moving in a fixed circular
orbit is considered as a toy model for the inspiral of a binary system of
compact objects due to gravitational radiation. The two Killing fields in the
toy model are used, according to a formalism introduced by Geroch, to describe
the geomet... | [
{
"created": "Sat, 12 Dec 1998 07:28:26 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Apr 1999 21:31:03 GMT",
"version": "v2"
},
{
"created": "Fri, 17 Sep 1999 12:41:15 GMT",
"version": "v3"
}
] | 2016-08-25 | [
[
"Whelan",
"John T.",
"",
"Uni. Bern"
],
[
"Romano",
"Joseph D.",
"",
"U Texas-Brownsville"
]
] | The geometry of two infinitely long lines of mass moving in a fixed circular orbit is considered as a toy model for the inspiral of a binary system of compact objects due to gravitational radiation. The two Killing fields in the toy model are used, according to a formalism introduced by Geroch, to describe the geometry... |
1605.00496 | Giacomo Rosati | Giovanni Amelino-Camelia, Leonardo Barcaroli, Giacomo D'Amico,
Niccol\'o Loret, Giacomo Rosati | IceCube and GRB neutrinos propagating in quantum spacetime | In V2 the possible helicity dependence of the effects (only mentioned
in a footnote of V1) is discussed in the main text, and we give an estimate
of possible values the parameters could take in order to produce the feature
found in the data | Phys.Lett. B761 (2016) 318-325 | 10.1016/j.physletb.2016.07.075 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Two recent publications have reported intriguing analyses, tentatively
suggesting that some aspects of IceCube data might be manifestations of
quantum-gravity-modified laws of propagation for neutrinos. We here propose a
strategy of data analysis which has the advantage of being applicable to
several alternative poss... | [
{
"created": "Mon, 2 May 2016 14:10:55 GMT",
"version": "v1"
},
{
"created": "Thu, 12 May 2016 21:24:46 GMT",
"version": "v2"
}
] | 2017-06-13 | [
[
"Amelino-Camelia",
"Giovanni",
""
],
[
"Barcaroli",
"Leonardo",
""
],
[
"D'Amico",
"Giacomo",
""
],
[
"Loret",
"Niccoló",
""
],
[
"Rosati",
"Giacomo",
""
]
] | Two recent publications have reported intriguing analyses, tentatively suggesting that some aspects of IceCube data might be manifestations of quantum-gravity-modified laws of propagation for neutrinos. We here propose a strategy of data analysis which has the advantage of being applicable to several alternative possib... |
2010.14437 | Asier Alonso-Bardaji | Asier Alonso-Bardaji, David Brizuela | Holonomy and inverse-triad corrections in spherical models coupled to
matter | null | Eur. Phys. J. C 81, 283 (2021) | 10.1140/epjc/s10052-021-09075-y | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Loop quantum gravity introduces two characteristic modifications in the
classical constraints of general relativity: the holonomy and inverse-triad
corrections. In this paper, a systematic construction of anomaly-free effective
constraints encoding such corrections is developed for spherically symmetric
spacetimes. T... | [
{
"created": "Tue, 27 Oct 2020 16:51:21 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Aug 2022 13:25:55 GMT",
"version": "v2"
}
] | 2022-08-12 | [
[
"Alonso-Bardaji",
"Asier",
""
],
[
"Brizuela",
"David",
""
]
] | Loop quantum gravity introduces two characteristic modifications in the classical constraints of general relativity: the holonomy and inverse-triad corrections. In this paper, a systematic construction of anomaly-free effective constraints encoding such corrections is developed for spherically symmetric spacetimes. The... |
1402.1055 | Betti Hartmann | Yves Brihaye (Universit\'e de Mons, Belgium), Valeria Diemer (Uni
Oldenburg, Germany) and Betti Hartmann (JUB, Germany & UFES, Brazil) | Charged Q-balls and boson stars and dynamics of charged test particles | 23 pages including 15 figures; v2: references added, comments on
limits on model parameters added, discussion on stability with respect to
pair production added; matched version accepted for publication in Phys. Rev.
D | Phys. Rev. D 89, 084048 (2014) | 10.1103/PhysRevD.89.084048 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct electrically charged Q-balls and boson stars in a model with a
scalar self-interaction potential resulting from gauge mediated supersymmetry
breaking. We discuss the properties of these solutions in detail and emphasize
the differences to the uncharged case. We observe that Q-balls can only be
constructe... | [
{
"created": "Wed, 5 Feb 2014 14:32:40 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Mar 2014 13:25:28 GMT",
"version": "v2"
}
] | 2014-04-23 | [
[
"Brihaye",
"Yves",
"",
"Université de Mons, Belgium"
],
[
"Diemer",
"Valeria",
"",
"Uni\n Oldenburg, Germany"
],
[
"Hartmann",
"Betti",
"",
"JUB, Germany & UFES, Brazil"
]
] | We construct electrically charged Q-balls and boson stars in a model with a scalar self-interaction potential resulting from gauge mediated supersymmetry breaking. We discuss the properties of these solutions in detail and emphasize the differences to the uncharged case. We observe that Q-balls can only be constructed ... |
1908.03700 | Alexander Tsirulev | I. M. Potashov, Ju. V. Tchemarina, A. N. Tsirulev | Bound orbits near scalar field naked singularities | 9 pages, 6 figures | Eur. Phys. J. C (2019) 79: 709 | 10.1140/epjc/s10052-019-7192-7 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study bound orbits near the centres of static, spherically symmetric,
asymptotically flat configurations of a self-gravitating scalar field minimally
coupled to gravity. In our approach, a nonlinear scalar field is considered as
an idealized model of dark matter, and the main examples that we have in mind
are the ... | [
{
"created": "Sat, 10 Aug 2019 06:43:03 GMT",
"version": "v1"
}
] | 2019-08-29 | [
[
"Potashov",
"I. M.",
""
],
[
"Tchemarina",
"Ju. V.",
""
],
[
"Tsirulev",
"A. N.",
""
]
] | We study bound orbits near the centres of static, spherically symmetric, asymptotically flat configurations of a self-gravitating scalar field minimally coupled to gravity. In our approach, a nonlinear scalar field is considered as an idealized model of dark matter, and the main examples that we have in mind are the ce... |
2309.01638 | Wei-Hsiang Shao | Tin-Long Chau, Pei-Ming Ho, Hikaru Kawai, Wei-Hsiang Shao, Cheng-Tsung
Wang | Hawking Radiation Under Generalized Uncertainty Principle | 23 pages, 1 figure; v2: references added; v3: published version with
more references and added clarifications | Eur. Phys. J. C (2023) 83:1118 | 10.1140/epjc/s10052-023-12302-3 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The generalized uncertainty relation is expected to be an essential element
in a theory of quantum gravity. In this work, we examine its effect on the
Hawking radiation of a Schwarzschild black hole formed from collapse by
incorporating a minimal uncertainty length scale into the radial coordinate of
the background. ... | [
{
"created": "Mon, 4 Sep 2023 14:46:32 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Sep 2023 14:28:48 GMT",
"version": "v2"
},
{
"created": "Tue, 2 Jan 2024 09:31:59 GMT",
"version": "v3"
}
] | 2024-01-03 | [
[
"Chau",
"Tin-Long",
""
],
[
"Ho",
"Pei-Ming",
""
],
[
"Kawai",
"Hikaru",
""
],
[
"Shao",
"Wei-Hsiang",
""
],
[
"Wang",
"Cheng-Tsung",
""
]
] | The generalized uncertainty relation is expected to be an essential element in a theory of quantum gravity. In this work, we examine its effect on the Hawking radiation of a Schwarzschild black hole formed from collapse by incorporating a minimal uncertainty length scale into the radial coordinate of the background. Th... |
2405.03607 | Angela Borchers | Angela Borchers, Frank Ohme, Jannik Mielke and Shrobana Ghosh | Observability of spin precession in the presence of a black-hole remnant
kick | 24 pages, 22 figures | Phys. Rev. D 110, 024037 (2024) | 10.1103/PhysRevD.110.024037 | LIGO-P2400159 | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Remnants of binary black-hole mergers can gain significant recoil or kick
velocities when the binaries are asymmetric. The kick is the consequence of
anisotropic emission of gravitational waves, which may leave a characteristic
imprint in the observed signal. So far, only one gravitational-wave event
supports a non-z... | [
{
"created": "Mon, 6 May 2024 16:17:53 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Jul 2024 10:32:17 GMT",
"version": "v2"
}
] | 2024-07-18 | [
[
"Borchers",
"Angela",
""
],
[
"Ohme",
"Frank",
""
],
[
"Mielke",
"Jannik",
""
],
[
"Ghosh",
"Shrobana",
""
]
] | Remnants of binary black-hole mergers can gain significant recoil or kick velocities when the binaries are asymmetric. The kick is the consequence of anisotropic emission of gravitational waves, which may leave a characteristic imprint in the observed signal. So far, only one gravitational-wave event supports a non-zer... |
gr-qc/0409123 | Edward Anderson | E. Anderson | Geometrodynamics: Spacetime or Space ? | Thesis, University of London, Examined in June by Prof Chris Isham
and Prof James Vickers. 226 pages including 21 figures | null | null | null | gr-qc | null | This thesis concerns the split of Einstein's field equations (EFE's) with
respect to nowhere null hypersurfaces. Areas covered include A) the foundations
of relativity, deriving geometrodynamics from relational first principles and
showing that this form accommodates a sufficient set of fundamental matter
fields to b... | [
{
"created": "Thu, 30 Sep 2004 17:18:39 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Anderson",
"E.",
""
]
] | This thesis concerns the split of Einstein's field equations (EFE's) with respect to nowhere null hypersurfaces. Areas covered include A) the foundations of relativity, deriving geometrodynamics from relational first principles and showing that this form accommodates a sufficient set of fundamental matter fields to be ... |
gr-qc/0408046 | Elizabeth Winstanley | Elizabeth Winstanley | Classical and thermodynamical aspects of black holes with conformally
coupled scalar field hair | 19 pages, 8 figures, talk given at the `Workshop on Dynamics and
Thermodynamics of Black Holes and Naked Singularities', Milan, May 2004 | null | null | null | gr-qc | null | We discuss the existence, stability and classical thermodynamics of
four-dimensional, spherically symmetric black hole solutions of the Einstein
equations with a conformally coupled scalar field. We review the solutions
existing in the literature with zero, positive and negative cosmological
constant. We also outline... | [
{
"created": "Mon, 16 Aug 2004 14:06:10 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Winstanley",
"Elizabeth",
""
]
] | We discuss the existence, stability and classical thermodynamics of four-dimensional, spherically symmetric black hole solutions of the Einstein equations with a conformally coupled scalar field. We review the solutions existing in the literature with zero, positive and negative cosmological constant. We also outline n... |
2009.06531 | Partha Sarathi DEBNATH | Partha Sarathi Debnath | Causal cosmology with braneworld gravity including Gauss Bonnet coupling | 8 figures | Modern Physics Letters A, Vol. 35, No. 26 (2020) 2050216 | 10.1142/S0217732320502168 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Causal cosmological evolutions in Randall Sundrum type II (RS) braneworld
gravity with Gauss Bonnet coupling and dissipative effects are discussed here.
Causal theory of dissipative effects are illustrated by Full Israel Stewart
theory are implemented. We consider the numerical solutions of evolutions and
analytic so... | [
{
"created": "Mon, 14 Sep 2020 15:52:41 GMT",
"version": "v1"
}
] | 2020-09-15 | [
[
"Debnath",
"Partha Sarathi",
""
]
] | Causal cosmological evolutions in Randall Sundrum type II (RS) braneworld gravity with Gauss Bonnet coupling and dissipative effects are discussed here. Causal theory of dissipative effects are illustrated by Full Israel Stewart theory are implemented. We consider the numerical solutions of evolutions and analytic solu... |
1401.3384 | Marcus Khuri | Ye Sle Cha, Marcus A. Khuri | Deformations of Axially Symmetric Initial Data and the Mass-Angular
Momentum Inequality | 47 pages; final version | Ann. Henri Poincare, 16 (2015), no. 3, 841-896 | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show how to reduce the general formulation of the mass-angular momentum
inequality, for axisymmetric initial data of the Einstein equations, to the
known maximal case whenever a geometrically motivated system of equations
admits a solution. This procedure is based on a certain deformation of the
initial data which... | [
{
"created": "Tue, 14 Jan 2014 23:18:55 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Feb 2015 01:03:42 GMT",
"version": "v2"
}
] | 2015-02-17 | [
[
"Cha",
"Ye Sle",
""
],
[
"Khuri",
"Marcus A.",
""
]
] | We show how to reduce the general formulation of the mass-angular momentum inequality, for axisymmetric initial data of the Einstein equations, to the known maximal case whenever a geometrically motivated system of equations admits a solution. This procedure is based on a certain deformation of the initial data which p... |
1403.5490 | Peter K.F. Kuhfittig | Peter K.F. Kuhfittig | A simple argument for dark matter as an effect of slightly modified
gravity | 6 pages, 1 figure | Adv. Studies Theor. Phys., Vol. 8, pp. 349-355, 2014 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This note presents a simple argument showing that dark matter is an effect of
$f(R)$ gravity based on the definition of slightly modified gravitational
theories previously proposed by the author.
| [
{
"created": "Fri, 21 Mar 2014 15:17:24 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Sep 2014 15:22:51 GMT",
"version": "v2"
}
] | 2014-09-15 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | This note presents a simple argument showing that dark matter is an effect of $f(R)$ gravity based on the definition of slightly modified gravitational theories previously proposed by the author. |
2312.17712 | Philippe G. LeFloch | Philippe G. LeFloch and Yue Ma | The Euclidean-hyperboloidal foliation method. Application to f(R)
modified gravity | 46 pages | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is a part of a series devoted to the Euclidean-hyperboloidal
foliation method introduced by the authors for investigating the global
existence problem associated with nonlinear systems of coupled
wave-Klein-Gordon equations with small data. This method was developed
especially for investigating the initial... | [
{
"created": "Fri, 29 Dec 2023 18:03:49 GMT",
"version": "v1"
},
{
"created": "Sun, 14 Jan 2024 16:49:03 GMT",
"version": "v2"
},
{
"created": "Tue, 7 May 2024 08:06:55 GMT",
"version": "v3"
}
] | 2024-05-08 | [
[
"LeFloch",
"Philippe G.",
""
],
[
"Ma",
"Yue",
""
]
] | This paper is a part of a series devoted to the Euclidean-hyperboloidal foliation method introduced by the authors for investigating the global existence problem associated with nonlinear systems of coupled wave-Klein-Gordon equations with small data. This method was developed especially for investigating the initial v... |
1603.03175 | Kazuharu Bamba | Z. Yousaf, Kazuharu Bamba and M. Zaeem ul Haq Bhatti | The Influence of Modification of Gravity on the Dynamics of Radiating
Spherical Fluids | 25 pages, no figure, version accepted for publication in Physical
Review D | Phys. Rev. D 93, 064059 (2016) | 10.1103/PhysRevD.93.064059 | FU-PCG-08 | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the evolutionary behaviors of compact objects in a modified
gravitational theory with the help of structure scalars. Particularly, we
consider the spherical geometry coupled with heat and radiation emitting
shearing viscous matter configurations. We construct structure scalars by
splitting the Riemann tens... | [
{
"created": "Thu, 10 Mar 2016 08:01:26 GMT",
"version": "v1"
}
] | 2016-04-12 | [
[
"Yousaf",
"Z.",
""
],
[
"Bamba",
"Kazuharu",
""
],
[
"Bhatti",
"M. Zaeem ul Haq",
""
]
] | We explore the evolutionary behaviors of compact objects in a modified gravitational theory with the help of structure scalars. Particularly, we consider the spherical geometry coupled with heat and radiation emitting shearing viscous matter configurations. We construct structure scalars by splitting the Riemann tensor... |
1803.09089 | Carlos A. R. Herdeiro | Yves Brihaye, Thomas Delplace, Carlos Herdeiro, Eugen Radu | An analytic effective model for hairy black holes | 16 pages, 5 figures | null | 10.1016/j.physletb.2018.05.018 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hairy black holes (BHs) have macroscopic degrees of freedom which are not
associated with a Gauss law. As such, these degrees of freedom are not manifest
as quasi-local quantities computed at the horizon. This suggests conceiving
hairy BHs as an interacting system with two components: a "bald" horizon
coupled to a "h... | [
{
"created": "Sat, 24 Mar 2018 10:49:20 GMT",
"version": "v1"
}
] | 2018-08-01 | [
[
"Brihaye",
"Yves",
""
],
[
"Delplace",
"Thomas",
""
],
[
"Herdeiro",
"Carlos",
""
],
[
"Radu",
"Eugen",
""
]
] | Hairy black holes (BHs) have macroscopic degrees of freedom which are not associated with a Gauss law. As such, these degrees of freedom are not manifest as quasi-local quantities computed at the horizon. This suggests conceiving hairy BHs as an interacting system with two components: a "bald" horizon coupled to a "hai... |
2201.05263 | Caitlin Rose | Caitlin A. Rose, Vinaya Valsan, Patrick R. Brady, Sinead Walsh, Chris
Pankow | Supplementing rapid Bayesian parameter estimation schemes with adaptive
grids | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the age of multi-messenger astrophysics, low-latency parameter estimation
of gravitational-wave signals is essential for electromagnetic follow-up
observations. In this paper, we present a new edition of the Bayesian parameter
estimation scheme for compact binaries known as Rapid PE. Rapid PE parallelizes
paramete... | [
{
"created": "Fri, 14 Jan 2022 00:47:49 GMT",
"version": "v1"
}
] | 2022-01-17 | [
[
"Rose",
"Caitlin A.",
""
],
[
"Valsan",
"Vinaya",
""
],
[
"Brady",
"Patrick R.",
""
],
[
"Walsh",
"Sinead",
""
],
[
"Pankow",
"Chris",
""
]
] | In the age of multi-messenger astrophysics, low-latency parameter estimation of gravitational-wave signals is essential for electromagnetic follow-up observations. In this paper, we present a new edition of the Bayesian parameter estimation scheme for compact binaries known as Rapid PE. Rapid PE parallelizes parameter ... |
2106.01234 | Vasilis Oikonomou | A.V. Astashenok, S. Capozziello, S.D. Odintsov, V.K. Oikonomou | Novel Stellar Astrophysics from Extended Gravity | EPL Accepted | null | 10.1209/0295-5075/134/59001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Novel implications on neutron stars come from extended gravity. Specifically,
the GW190814 event indicated the probability of having large mass stars in the
mass-gap region $2.5-5\, M_{\odot}$. If the secondary component of GW190814 is
a neutron star, such large masses are marginally supported by General
Relativity (... | [
{
"created": "Wed, 2 Jun 2021 15:31:02 GMT",
"version": "v1"
}
] | 2021-09-01 | [
[
"Astashenok",
"A. V.",
""
],
[
"Capozziello",
"S.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | Novel implications on neutron stars come from extended gravity. Specifically, the GW190814 event indicated the probability of having large mass stars in the mass-gap region $2.5-5\, M_{\odot}$. If the secondary component of GW190814 is a neutron star, such large masses are marginally supported by General Relativity (GR... |
1003.1886 | Winston Fairbairn | John W. Barrett, Richard J. Dowdall, Winston J. Fairbairn, Henrique
Gomes, Frank Hellmann, Roberto Pereira | Asymptotics of 4d spin foam models | 10 pages, Proceedings for the 2nd Corfu summer school and workshop on
quantum gravity and quantum geometry, talk given by Winston J. Fairbairn | null | 10.1007/s10714-010-0983-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the asymptotic properties of four-simplex amplitudes for various
four-dimensional spin foam models. We investigate the semi-classical limit of
the Ooguri, Euclidean and Lorentzian EPRL models using coherent states for the
boundary data. For some classes of geometrical boundary data, the asymptotic
formulae a... | [
{
"created": "Tue, 9 Mar 2010 14:50:24 GMT",
"version": "v1"
}
] | 2015-05-18 | [
[
"Barrett",
"John W.",
""
],
[
"Dowdall",
"Richard J.",
""
],
[
"Fairbairn",
"Winston J.",
""
],
[
"Gomes",
"Henrique",
""
],
[
"Hellmann",
"Frank",
""
],
[
"Pereira",
"Roberto",
""
]
] | We study the asymptotic properties of four-simplex amplitudes for various four-dimensional spin foam models. We investigate the semi-classical limit of the Ooguri, Euclidean and Lorentzian EPRL models using coherent states for the boundary data. For some classes of geometrical boundary data, the asymptotic formulae are... |
1201.5601 | Julio Oliva | Julio Oliva, Sourya Ray | Birkhoff's Theorem in Higher Derivative Theories of Gravity II:
Asymptotically Lifshitz Black Holes | 10 pages, no figures. v2: minor corrections. Rejected by CQG. v3:
Final version, to appear in PRD with the title "Birkhoff's Theorem in Higher
Derivative Theories of Gravity II" | null | 10.1103/PhysRevD.86.084014 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As a continuation of a previous work, here we examine the admittance of
Birkhoff's theorem in a class of higher derivative theories of gravity. This
class is contained in a larger class of theories which are characterized by the
property that the trace of the field equations are of second order in the
metric. The act... | [
{
"created": "Thu, 26 Jan 2012 18:50:31 GMT",
"version": "v1"
},
{
"created": "Fri, 18 May 2012 04:28:17 GMT",
"version": "v2"
},
{
"created": "Mon, 17 Sep 2012 22:00:42 GMT",
"version": "v3"
}
] | 2013-05-30 | [
[
"Oliva",
"Julio",
""
],
[
"Ray",
"Sourya",
""
]
] | As a continuation of a previous work, here we examine the admittance of Birkhoff's theorem in a class of higher derivative theories of gravity. This class is contained in a larger class of theories which are characterized by the property that the trace of the field equations are of second order in the metric. The actio... |
1405.5503 | Ahmed Alhamzawi | Ahmed Alhamzawi and Rahim Alhamzawi | Extensions of GR using Projective-Invariance | Dear arxiv, We would like to withdraw this article because we have
discovered some incomplete assumptions at the begining of the paper which may
result in some instability in the rest of the theory presented in the paper.
Currenctly, We have not reached a viable way to correct these assumptions so
we think it i... | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the unification of electromagnetism and gravity into a single
geometrical entity can be beautifully accomplished in a theory with
non-symmetric affine connection
(${\Gamma}_{\mu\nu}^{\lambda}\neq{\Gamma}_{\nu\mu}^{\lambda}$), and the
unifying symmetry being projective symmetry. In addition, we show that ... | [
{
"created": "Wed, 21 May 2014 18:16:22 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jun 2020 20:39:06 GMT",
"version": "v2"
}
] | 2020-06-08 | [
[
"Alhamzawi",
"Ahmed",
""
],
[
"Alhamzawi",
"Rahim",
""
]
] | We show that the unification of electromagnetism and gravity into a single geometrical entity can be beautifully accomplished in a theory with non-symmetric affine connection (${\Gamma}_{\mu\nu}^{\lambda}\neq{\Gamma}_{\nu\mu}^{\lambda}$), and the unifying symmetry being projective symmetry. In addition, we show that in... |
2102.05693 | Nolene Naidu | Nolene F. Naidu, Sante Carloni and Peter Dunsby | Two-fluid stellar objects in General Relativity: the covariant
formulation | 19 pages, 14 figures | Phys. Rev. D 104, 044014 (2021) | 10.1103/PhysRevD.104.044014 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We apply the 1+1+2 covariant approach to describe a general static and
spherically symmetric relativistic stellar object which contains two
interacting fluids. We then use the 1+1+2 equations to derive the corresponding
Tolman-Oppenheimer-Volkoff (TOV) equations in covariant form in the isotropic,
non-interacting cas... | [
{
"created": "Wed, 10 Feb 2021 19:08:19 GMT",
"version": "v1"
},
{
"created": "Wed, 26 May 2021 13:16:01 GMT",
"version": "v2"
}
] | 2021-08-11 | [
[
"Naidu",
"Nolene F.",
""
],
[
"Carloni",
"Sante",
""
],
[
"Dunsby",
"Peter",
""
]
] | We apply the 1+1+2 covariant approach to describe a general static and spherically symmetric relativistic stellar object which contains two interacting fluids. We then use the 1+1+2 equations to derive the corresponding Tolman-Oppenheimer-Volkoff (TOV) equations in covariant form in the isotropic, non-interacting case.... |
2007.03524 | Askold Duviryak | Askold Duviryak | Solvable two-particle systems with time-asymmetric interactions in de
Sitter space | 22 pages | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The two-particle models in de Sitter space-time with time-asymmetric
retarded-advanced interactions are constructed. Particular cases of the
field-type electromagnetic and scalar interactions are considered. The
manifestly covariant descriptions of the models within the Lagrangian and
Hamiltonian formalisms with cons... | [
{
"created": "Mon, 6 Jul 2020 11:53:00 GMT",
"version": "v1"
}
] | 2020-07-08 | [
[
"Duviryak",
"Askold",
""
]
] | The two-particle models in de Sitter space-time with time-asymmetric retarded-advanced interactions are constructed. Particular cases of the field-type electromagnetic and scalar interactions are considered. The manifestly covariant descriptions of the models within the Lagrangian and Hamiltonian formalisms with constr... |
2009.05520 | Li Li | Rong-Gen Cai, Li Li, Run-Qiu Yang | No Inner-Horizon Theorem for Black Holes with Charged Scalar Hairs | v4: typos fixed, published version | JHEP 03 (2021) 263 | 10.1007/JHEP03(2021)263 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We establish a no inner-horizon theorem for black holes with charged scalar
hairs. Considering a general gravitational theory with a charged scalar field,
we prove that there exists no inner Cauchy horizon for both spherical and
planar black holes with non-trivial scalar hair. The hairy black holes approach
to a spac... | [
{
"created": "Fri, 11 Sep 2020 16:45:22 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Sep 2020 14:02:05 GMT",
"version": "v2"
},
{
"created": "Thu, 25 Feb 2021 05:40:14 GMT",
"version": "v3"
},
{
"created": "Mon, 5 Apr 2021 01:20:54 GMT",
"version": "v4"
}
] | 2021-04-06 | [
[
"Cai",
"Rong-Gen",
""
],
[
"Li",
"Li",
""
],
[
"Yang",
"Run-Qiu",
""
]
] | We establish a no inner-horizon theorem for black holes with charged scalar hairs. Considering a general gravitational theory with a charged scalar field, we prove that there exists no inner Cauchy horizon for both spherical and planar black holes with non-trivial scalar hair. The hairy black holes approach to a spacel... |
2206.14819 | Shahar Hod | Shahar Hod | How short can stationary charged scalar hair be? | 8 pages | Physical Review D 105, 024061 (2022) | 10.1103/PhysRevD.105.024061 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | It is by now well established that charged rotating Kerr-Newman black holes
can support bound-state charged matter configurations which are made of
minimally coupled massive scalar fields. We here prove that the externally
supported stationary charged scalar configurations {\it cannot} be arbitrarily
compact. In part... | [
{
"created": "Wed, 29 Jun 2022 18:00:01 GMT",
"version": "v1"
}
] | 2022-07-06 | [
[
"Hod",
"Shahar",
""
]
] | It is by now well established that charged rotating Kerr-Newman black holes can support bound-state charged matter configurations which are made of minimally coupled massive scalar fields. We here prove that the externally supported stationary charged scalar configurations {\it cannot} be arbitrarily compact. In partic... |
1412.7783 | Sumanta Chakraborty | Sumanta Chakraborty and Soumitra SenGupta | Solutions on a brane in a bulk spacetime with Kalb-Ramond field | 26 pages, no figures, title changed, matches published version | Annals of Physics 367, 258 (2016) | 10.1016/j.aop.2016.01.023 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Effective gravitational field equations on a brane have been derived, when
the bulk spacetime is endowed with the second rank antisymmetric Kalb-Ramond
field. Since both the graviton and the Kalb-Ramond field are closed string
excitations, they can propagate in the bulk. After deriving the effective
gravitational fie... | [
{
"created": "Thu, 25 Dec 2014 04:09:12 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Feb 2016 03:55:08 GMT",
"version": "v2"
}
] | 2016-03-01 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"SenGupta",
"Soumitra",
""
]
] | Effective gravitational field equations on a brane have been derived, when the bulk spacetime is endowed with the second rank antisymmetric Kalb-Ramond field. Since both the graviton and the Kalb-Ramond field are closed string excitations, they can propagate in the bulk. After deriving the effective gravitational field... |
1101.3164 | Ion I. Cotaescu | Ion I. Cotaescu | The free Dirac spinors of the spin basis on the de Sitter expanding
universe | 8 pages no figures | Mod.Phys.Lett.A26:1613-1619,2011 | 10.1142/S0217732311036048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that on the de Sitter space-time the global behavior of the free
Dirac spinors in momentum representation is determined by several phases
factors which are functions of momentum with special properties. Such suitable
phase functions can be chosen for writing down the free Dirac quantum modes of
the spin b... | [
{
"created": "Mon, 17 Jan 2011 10:03:28 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Mar 2011 09:57:48 GMT",
"version": "v2"
},
{
"created": "Mon, 2 May 2011 07:31:03 GMT",
"version": "v3"
},
{
"created": "Fri, 23 Nov 2012 12:23:03 GMT",
"version": "v4"
}
] | 2012-11-26 | [
[
"Cotaescu",
"Ion I.",
""
]
] | It is shown that on the de Sitter space-time the global behavior of the free Dirac spinors in momentum representation is determined by several phases factors which are functions of momentum with special properties. Such suitable phase functions can be chosen for writing down the free Dirac quantum modes of the spin bas... |
gr-qc/0404113 | Luis F. Urrutia | Jorge Alfaro, Marat Reyes, Hugo A. Morales-Tecotl and L. F. Urrutia | On alternative approaches to Lorentz violation in loop quantum gravity
inspired models | 4 pages, revtex4, no figures, references added | Phys.Rev. D70 (2004) 084002 | 10.1103/PhysRevD.70.084002 | null | gr-qc | null | Recent claims point out that possible violations of Lorentz symmetry
appearing in some semiclassical models of extended matter dynamics motivated by
loop quantum gravity can be removed by a different choice of canonically
conjugated variables. In this note we show that such alternative is
inconsistent with the choice... | [
{
"created": "Tue, 27 Apr 2004 21:26:53 GMT",
"version": "v1"
},
{
"created": "Wed, 5 May 2004 16:44:30 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Alfaro",
"Jorge",
""
],
[
"Reyes",
"Marat",
""
],
[
"Morales-Tecotl",
"Hugo A.",
""
],
[
"Urrutia",
"L. F.",
""
]
] | Recent claims point out that possible violations of Lorentz symmetry appearing in some semiclassical models of extended matter dynamics motivated by loop quantum gravity can be removed by a different choice of canonically conjugated variables. In this note we show that such alternative is inconsistent with the choice o... |
1410.2252 | Shahar Hod | Shahar Hod | A short remark (with a long title) on the universality of the
quasinormal spectrum of near-extremal Kerr-Newman black holes | 2 pages | The European Physical Journal C (Letter) 75, 272 (2015) [A
slightly extended version] | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent paper (arXiv:1410.0694) Zilh\~ao, Cardoso, Herdeiro, Lehner, and
Sperhake have studied the nonlinear stability of Kerr-Newman black holes. We
show that their numerical results for the time evolutions of the spacetime
deformations of near-extremal Kerr-Newman black holes are described extremely
well by a {... | [
{
"created": "Wed, 8 Oct 2014 20:00:17 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Hod",
"Shahar",
""
]
] | In a recent paper (arXiv:1410.0694) Zilh\~ao, Cardoso, Herdeiro, Lehner, and Sperhake have studied the nonlinear stability of Kerr-Newman black holes. We show that their numerical results for the time evolutions of the spacetime deformations of near-extremal Kerr-Newman black holes are described extremely well by a {\i... |
0707.0942 | Leszek Soko{\l}owski | Leszek M. Sokolowski | Metric gravity theories and cosmology:II. Stability of a ground state in
f(R) theories | A modified and expanded version of a second part of the paper which
previously appeared as gr-qc/0702097v1. The first, modified part is now
published as gr-qc/0702097v2 and as a separate paper in Class. Qu. Grav. The
present paper matches the published version | Class.Quant.Grav.24:3713-3734,2007 | 10.1088/0264-9381/24/14/011 | null | gr-qc | null | A fundamental criterion of viability of any gravity theory is existence of a
stable ground-state solution being either Minkowski, dS or AdS space. Stability
of the ground state is independent of which frame is physical. In general, a
given theory has multiple ground states and splits into independent physical
sectors... | [
{
"created": "Fri, 6 Jul 2007 10:31:59 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Sokolowski",
"Leszek M.",
""
]
] | A fundamental criterion of viability of any gravity theory is existence of a stable ground-state solution being either Minkowski, dS or AdS space. Stability of the ground state is independent of which frame is physical. In general, a given theory has multiple ground states and splits into independent physical sectors. ... |
gr-qc/0305052 | Abel Camacho Quintana | Abel Camacho (Physics Department, Universidad Autonoma
Metropolitana-Iztapalapa) | Some Consequences of a Generalization to Heisenberg Algebra in Quantum
Electrodynamics | Awarded with an Honorable Mention in the 2003 Essay Competition by
the Gravity Research Foundation | Int.J.Mod.Phys. D12 (2003) 1687-1692 | 10.1142/S0218271803004341 | null | gr-qc quant-ph | null | In this essay it will be shown that the introduction of a modification to
Heisenberg algebra (here this feature means the existence of a minimal
obserlvable length), as a fundamental part of the quantization process of the
electrodynamical field, renders states in which the uncertainties in the two
quadrature compone... | [
{
"created": "Tue, 13 May 2003 18:57:13 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Camacho",
"Abel",
"",
"Physics Department, Universidad Autonoma\n Metropolitana-Iztapalapa"
]
] | In this essay it will be shown that the introduction of a modification to Heisenberg algebra (here this feature means the existence of a minimal obserlvable length), as a fundamental part of the quantization process of the electrodynamical field, renders states in which the uncertainties in the two quadrature component... |
2203.03936 | Alejandro Jim\'enez-Cano | Alejandro Jim\'enez-Cano | Review of gravitational wave solutions in quadratic metric-affine
gravity | 31 pages, 1 figure, contribution to the Special Issue of the
International Journal of Geometric Methods in Modern Physics dedicated to the
conference Geometric Foundations of Gravity in Tartu 2021 | null | 10.1142/S0219887822400047 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this review we consider the quadratic Metric-Affine Gauge gravity
Lagrangian, which contains all the algebraic invariants up to quadratic order
in torsion, nonmetricity and curvature. The goal will be to collect the known
exact solutions for this theory that describe the propagation of a
gravitational wave and som... | [
{
"created": "Tue, 8 Mar 2022 09:01:27 GMT",
"version": "v1"
}
] | 2022-11-09 | [
[
"Jiménez-Cano",
"Alejandro",
""
]
] | In this review we consider the quadratic Metric-Affine Gauge gravity Lagrangian, which contains all the algebraic invariants up to quadratic order in torsion, nonmetricity and curvature. The goal will be to collect the known exact solutions for this theory that describe the propagation of a gravitational wave and some ... |
0910.0350 | Charles Hellaby | Charles Hellaby | Modelling Inhomogeneity in the Universe | LaTeX, PoS class, 50 pages. See http://fisica.ufmt.br/school2/ and
http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=81 | PoS ISFTG:005,2009 | null | uct-cosmology-2009-10-02 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An overview of some recent developments in inhomogeneous models is presented.
As the volume and precision of cosmological data improves, it will become more
and more essential to understand the non-linear behaviour of the Einstein field
equations. This requires the study of exact inhomogeneous solutions, including
th... | [
{
"created": "Fri, 2 Oct 2009 09:58:01 GMT",
"version": "v1"
}
] | 2010-01-06 | [
[
"Hellaby",
"Charles",
""
]
] | An overview of some recent developments in inhomogeneous models is presented. As the volume and precision of cosmological data improves, it will become more and more essential to understand the non-linear behaviour of the Einstein field equations. This requires the study of exact inhomogeneous solutions, including thei... |
1605.01316 | Jorma Louko | Christopher J. Fewster, Benito A. Ju\'arez-Aubry, Jorma Louko | Waiting for Unruh | 29 pages. v2: minor clarifications, references added, typos corrected | Class. Quantum Grav. 33 (2016) 165003 | 10.1088/0264-9381/33/16/165003 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | How long does a uniformly accelerated observer need to interact with a
quantum field in order to record thermality in the Unruh temperature? We
address this question for a pointlike Unruh-DeWitt detector, coupled linearly
to a real Klein-Gordon field of mass $m\ge0$ and treated within first order
perturbation theory,... | [
{
"created": "Wed, 4 May 2016 15:31:39 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Jul 2016 15:29:53 GMT",
"version": "v2"
}
] | 2016-07-20 | [
[
"Fewster",
"Christopher J.",
""
],
[
"Juárez-Aubry",
"Benito A.",
""
],
[
"Louko",
"Jorma",
""
]
] | How long does a uniformly accelerated observer need to interact with a quantum field in order to record thermality in the Unruh temperature? We address this question for a pointlike Unruh-DeWitt detector, coupled linearly to a real Klein-Gordon field of mass $m\ge0$ and treated within first order perturbation theory, i... |
2309.07790 | Yao Guo | Yao Guo, Wenjie Zhong, Yiqiu Ma, Daiqin Su | Mass transfer and boson cloud depletion in a binary black hole system | null | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Ultralight boson is one of the potential candidates for dark matter. If
exists, it can be generated by a rapidly rotating black hole via superradiance,
extracting the energy and angular momentum of the black hole and forming a
boson cloud. The boson cloud can be affected by the presence of a companion
star, generatin... | [
{
"created": "Thu, 14 Sep 2023 15:25:43 GMT",
"version": "v1"
}
] | 2023-09-15 | [
[
"Guo",
"Yao",
""
],
[
"Zhong",
"Wenjie",
""
],
[
"Ma",
"Yiqiu",
""
],
[
"Su",
"Daiqin",
""
]
] | Ultralight boson is one of the potential candidates for dark matter. If exists, it can be generated by a rapidly rotating black hole via superradiance, extracting the energy and angular momentum of the black hole and forming a boson cloud. The boson cloud can be affected by the presence of a companion star, generating ... |
0909.0531 | Jorge I. Ovalle A. | J Ovalle | Braneworld Stars: Anisotropy Minimally Projected Onto the Brane | 15 pages, 1 figure. Schwarzschild's solution removed. References
added. Based on the contributed lecture given at the IX Asia-Pacific
International Conference on Gravitation and Astrophysics (ICGA9), June
28-July 2, 2009, Wuhan, China | null | 10.1142/9789814307673_0017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of the Randall-Sundrum braneworld, an exhaustive and detailed
description of the approach based in the minimal anisotropic consequence onto
the brane, which has been successfully used to generate exact interior
solutions to Einstein's field equations for static and non-uniform braneworld
stars with loc... | [
{
"created": "Wed, 2 Sep 2009 21:08:02 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Aug 2010 20:45:23 GMT",
"version": "v2"
}
] | 2017-08-23 | [
[
"Ovalle",
"J",
""
]
] | In the context of the Randall-Sundrum braneworld, an exhaustive and detailed description of the approach based in the minimal anisotropic consequence onto the brane, which has been successfully used to generate exact interior solutions to Einstein's field equations for static and non-uniform braneworld stars with local... |
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