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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0606054 | Alexander Feinstein | Alexander Feinstein | Formation of a Black String in a Higher Dimensional Vacuum Gravitational
Collapse | Minor changes. A reference added. Matches the print version. To
appear in Phys. Lett. A | Phys.Lett.A372:4337-4339,2008 | 10.1016/j.physleta.2008.03.063 | null | gr-qc hep-th | null | We present a solution to the vacuum Einstein Equations which represents a
collapse of a gravitational wave in 5 dimensions. Depending on the focal length
of the wave, the collapse results, either in a black string covered by a
horizon, or in a naked singularity which can be removed.
| [
{
"created": "Mon, 12 Jun 2006 20:08:49 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Mar 2008 07:56:50 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Feinstein",
"Alexander",
""
]
] | We present a solution to the vacuum Einstein Equations which represents a collapse of a gravitational wave in 5 dimensions. Depending on the focal length of the wave, the collapse results, either in a black string covered by a horizon, or in a naked singularity which can be removed. |
2211.11821 | Paulo Jos\'e Ferreira Porf\'irio Da Silva | A. A. Ara\'ujo Filho, J. R. Nascimento, A. Yu. Petrov, P. J.
Porf\'irio | Vacuum solution within a metric-affine bumblebee gravity | 28 pages, 1 figure, version accepted to PRD | Phys. Rev. D 108, 085010 (2023) | 10.1103/PhysRevD.108.085010 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We consider a metric-affine extension to the gravitational sector of the
Standard-Model Extension for the Lorentz-violating coefficients $u$ and
$s^{\mu\nu}$. The general results, which are applied to a specific model called
metric--affine bumblebee gravity, are obtained. A Schwarzschild-like solution,
incorporating ... | [
{
"created": "Mon, 21 Nov 2022 19:42:26 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Sep 2023 15:44:12 GMT",
"version": "v2"
}
] | 2023-10-18 | [
[
"Filho",
"A. A. Araújo",
""
],
[
"Nascimento",
"J. R.",
""
],
[
"Petrov",
"A. Yu.",
""
],
[
"Porfírio",
"P. J.",
""
]
] | We consider a metric-affine extension to the gravitational sector of the Standard-Model Extension for the Lorentz-violating coefficients $u$ and $s^{\mu\nu}$. The general results, which are applied to a specific model called metric--affine bumblebee gravity, are obtained. A Schwarzschild-like solution, incorporating ef... |
2108.08729 | Kai Shi | Kai Shi, Yu Tian, Xiaoning Wu, Hongbao Zhang, and Chuanjia Zhu | Thermodynamic equilibrium condition and the first law of thermodynamics
for charged perfect fluids in electromagnetic and gravitational fields | typos corrected, clarifications made, version to appear in CQG | Class. Quantum Grav. 39 (2022) 085004 | 10.1088/1361-6382/ac5378 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a proof of the necessary and sufficient condition on the profile
of the temperature, chemical potential, and angular velocity for a charged
perfect fluid in dynamic equilibrium to be in thermodynamic equilibrium not
only in fixed but also in dynamical electromagnetic and gravitational fields.
In passing, w... | [
{
"created": "Thu, 19 Aug 2021 15:00:11 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Feb 2022 13:54:22 GMT",
"version": "v2"
}
] | 2022-03-30 | [
[
"Shi",
"Kai",
""
],
[
"Tian",
"Yu",
""
],
[
"Wu",
"Xiaoning",
""
],
[
"Zhang",
"Hongbao",
""
],
[
"Zhu",
"Chuanjia",
""
]
] | We provide a proof of the necessary and sufficient condition on the profile of the temperature, chemical potential, and angular velocity for a charged perfect fluid in dynamic equilibrium to be in thermodynamic equilibrium not only in fixed but also in dynamical electromagnetic and gravitational fields. In passing, we ... |
1607.05985 | ChengGang Shao | Pengshun Luo, Jianbo Wang, Shengguo Guan, Wenjie Wu, Zhaoyang Tian,
Shanqing Yang, Chenggang Shao, Jun Luo | Test of non-Newtonian gravitational force at micrometer range | Presented at the Seventh Meeting on CPT and Lorentz Symmetry,
Bloomington, Indiana, June 20-24, 2016 | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report an experimental test of non-Newtonian gravitational forces at mi-
crometer range. To experimentally subtract off the Casimir force and the
electrostatic force background, differential force measurements were performed
by sensing the lateral force between a gold sphere and a density modulated
source mass usi... | [
{
"created": "Mon, 18 Jul 2016 09:20:18 GMT",
"version": "v1"
}
] | 2016-07-21 | [
[
"Luo",
"Pengshun",
""
],
[
"Wang",
"Jianbo",
""
],
[
"Guan",
"Shengguo",
""
],
[
"Wu",
"Wenjie",
""
],
[
"Tian",
"Zhaoyang",
""
],
[
"Yang",
"Shanqing",
""
],
[
"Shao",
"Chenggang",
""
],
[
"Luo",
... | We report an experimental test of non-Newtonian gravitational forces at mi- crometer range. To experimentally subtract off the Casimir force and the electrostatic force background, differential force measurements were performed by sensing the lateral force between a gold sphere and a density modulated source mass using... |
1009.5831 | Md. Rahman Atiqur | M. Atiqur Rahman | Waves in General Relativistic Two-fluid Plasma around a Schwarzschild
Black Hole | 7 pages; Astrophys Space Sci (2012). arXiv admin note: substantial
text overlap with arXiv:1008.4838 | Astrophys. Space Sci. 341 (2012) 477 | 10.1007/s10509-012-1114-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Waves propagating in the relativistic electron-positron or ions plasma are
investigated in a frame of two-fluid equations using the 3+1 formalism of
general relativity developed by Thorne, Price and Macdonald (TPM). The plasma
is assumed to be freefalling in the radial direction toward the event horizon
due to the st... | [
{
"created": "Wed, 29 Sep 2010 10:10:54 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Jan 2011 06:32:41 GMT",
"version": "v2"
},
{
"created": "Wed, 16 May 2012 12:22:28 GMT",
"version": "v3"
}
] | 2012-11-12 | [
[
"Rahman",
"M. Atiqur",
""
]
] | Waves propagating in the relativistic electron-positron or ions plasma are investigated in a frame of two-fluid equations using the 3+1 formalism of general relativity developed by Thorne, Price and Macdonald (TPM). The plasma is assumed to be freefalling in the radial direction toward the event horizon due to the stro... |
1210.0722 | Sujoy Modak Dr. | Sujoy Kumar Modak | Generalized Smarr formula as a local identity for arbitrary dimensional
black holes | 5 pages, no figures, prepared for the proceedings of COSGRAV-12,
Kolkata 7-11 February 2012, to appear in Journal of Physics: Conference
Series (JPCS) | Journal of Physics: Conference Series 405, 012023 (2012) | 10.1088/1742-6596/405/1/012023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss a method based on Killing symmetries and Komar conserved charges
to generalize Smarr mass formula for arbitrary dimensional charged, rotating
spacetime. We derive a local identity defined at the event horizon of the
rotating black hole in Einstein-Maxwell gravity which reproduces the
generalized Smarr form... | [
{
"created": "Tue, 2 Oct 2012 10:05:29 GMT",
"version": "v1"
}
] | 2012-12-18 | [
[
"Modak",
"Sujoy Kumar",
""
]
] | We discuss a method based on Killing symmetries and Komar conserved charges to generalize Smarr mass formula for arbitrary dimensional charged, rotating spacetime. We derive a local identity defined at the event horizon of the rotating black hole in Einstein-Maxwell gravity which reproduces the generalized Smarr formul... |
1108.2821 | Andrei Mironov | A.Mironov, A.Morozov and T.N.Tomaras | Geodesic deviation and particle creation in curved spacetimes | 5 pages | Pisma v ZhETF (JETP Letters) vol. 94, issue 11, page 872 (2011) | 10.1134/S0021364011230081 | FIAN/TD-15/11; ITEP/TH-25/11; CCTP-2011-26 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A quantum mechanical picture, relating accelerated geodesic deviation to
creation of massive particles via quantum tunneling in curved background
spacetimes, is presented. The effect is analogous to pair production by an
electric field and leads naturally to production of massive particles in de
Sitter and superlumin... | [
{
"created": "Sat, 13 Aug 2011 21:04:05 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Mironov",
"A.",
""
],
[
"Morozov",
"A.",
""
],
[
"Tomaras",
"T. N.",
""
]
] | A quantum mechanical picture, relating accelerated geodesic deviation to creation of massive particles via quantum tunneling in curved background spacetimes, is presented. The effect is analogous to pair production by an electric field and leads naturally to production of massive particles in de Sitter and superluminal... |
gr-qc/9609029 | Yasusada Nambu | Yasusada Nambu and Atsushi Taruya | Evolution of Cosmological Perturbation in Reheating Phase of the
Universe | 10 pages, 1 figures | Prog.Theor.Phys. 97 (1997) 83-89 | 10.1143/PTP.97.83 | null | gr-qc astro-ph | null | The evolution of the cosmological perturbation during the oscillatory stage
of the scalar field is investigated. For the power law potential of the
inflaton field, the evolution equation of the Mukhanov's gauge invariant
variable is reduced to the Mathieu equation and the density perturbation grows
by the parametric ... | [
{
"created": "Thu, 12 Sep 1996 09:45:55 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Nambu",
"Yasusada",
""
],
[
"Taruya",
"Atsushi",
""
]
] | The evolution of the cosmological perturbation during the oscillatory stage of the scalar field is investigated. For the power law potential of the inflaton field, the evolution equation of the Mukhanov's gauge invariant variable is reduced to the Mathieu equation and the density perturbation grows by the parametric re... |
1711.11381 | Gonzalo Quiroga | L. A. G\'omez L\'opez, and G. D. Quiroga | Asymptotic structure of spacetime and the Newman-Penrose formalism: a
brief review | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A brief review about the Newman-Penrose formalism and the asymptotic
structure of the spacetime is given. The goal of this review is to describe the
latest developments in these topics and make a summary of the most important
articles published by Newman and collaborators. Additionally, we discuss some
aspects of thi... | [
{
"created": "Thu, 30 Nov 2017 13:30:26 GMT",
"version": "v1"
}
] | 2017-12-01 | [
[
"López",
"L. A. Gómez",
""
],
[
"Quiroga",
"G. D.",
""
]
] | A brief review about the Newman-Penrose formalism and the asymptotic structure of the spacetime is given. The goal of this review is to describe the latest developments in these topics and make a summary of the most important articles published by Newman and collaborators. Additionally, we discuss some aspects of this ... |
2402.03914 | Aneta Wojnar | Eva Lope-Oter, Aneta Wojnar | Twin Stars in General Relativity and Extended Theories of Gravity | 21 pages, 14 figures, 5 tables | null | null | null | gr-qc astro-ph.HE hep-th nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore gravity-independent equations of state for neutron stars,
particularly focusing on twin stars. Examining four categories, we emphasize
their behavior in both General Relativity and Palatini gravity. Additionally,
we discuss a subcategory of type I, which, in the context of General
Relativity, does not exhi... | [
{
"created": "Tue, 6 Feb 2024 11:28:51 GMT",
"version": "v1"
}
] | 2024-02-07 | [
[
"Lope-Oter",
"Eva",
""
],
[
"Wojnar",
"Aneta",
""
]
] | We explore gravity-independent equations of state for neutron stars, particularly focusing on twin stars. Examining four categories, we emphasize their behavior in both General Relativity and Palatini gravity. Additionally, we discuss a subcategory of type I, which, in the context of General Relativity, does not exhibi... |
1210.0897 | Ujjal Debnath | Ujjal Debnath | Thermodynamics in Higher Dimensional Vaidya Space-Time | 10 pages, 4 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we have considered the Vaidya spacetime in null radiating fluid
with perfect fluid in higher dimension and have found the solution for
barotropic fluid. We have shown that the Einstein's field equations can be
obtained from Unified first law i.e., field equations and unified first law are
equivalent. Th... | [
{
"created": "Tue, 2 Oct 2012 07:06:31 GMT",
"version": "v1"
}
] | 2012-10-04 | [
[
"Debnath",
"Ujjal",
""
]
] | In this work, we have considered the Vaidya spacetime in null radiating fluid with perfect fluid in higher dimension and have found the solution for barotropic fluid. We have shown that the Einstein's field equations can be obtained from Unified first law i.e., field equations and unified first law are equivalent. The ... |
2202.01015 | Celio Muniz | Roberto V. Maluf and Celio R. Muniz | Comment on "Greybody radiation and quasinormal modes of Kerr-like black
hole in Bumblebee gravity model" | 3 pages. Published in The European Physics Journal C | Eur.Phys.J.C., (2022) 82:94 | 10.1140/epjc/s10052-022-10039-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the paper "Greybody radiation and quasinormal modes of
Kerr-like black hole in Bumblebee gravity model", Eur. Phys. J. C 81, 501
(2021). arXiv:2102.06303, recently published in this journal is based on an
incorrect result obtained by Ding et al., Eur. Phys. J. C 80, 178 (2020).
arXiv:1910.02674, for ... | [
{
"created": "Wed, 2 Feb 2022 13:19:35 GMT",
"version": "v1"
}
] | 2022-02-03 | [
[
"Maluf",
"Roberto V.",
""
],
[
"Muniz",
"Celio R.",
""
]
] | It is shown that the paper "Greybody radiation and quasinormal modes of Kerr-like black hole in Bumblebee gravity model", Eur. Phys. J. C 81, 501 (2021). arXiv:2102.06303, recently published in this journal is based on an incorrect result obtained by Ding et al., Eur. Phys. J. C 80, 178 (2020). arXiv:1910.02674, for a ... |
2106.15425 | Sergio Gimeno-Soler | Sergio Gimeno-Soler, Jos\'e A. Font, Carlos Herdeiro, Eugen Radu | Magnetized accretion disks around Kerr black holes with scalar hair --
Nonconstant angular momentum disks | 21 pages, 10 figures | null | 10.1103/PhysRevD.104.103008 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present new equilibrium solutions of stationary models of magnetized thick
disks (or tori) around Kerr black holes with synchronised scalar hair. The
models reported here largely extend our previous results based on constant
radial distributions of the specific angular momentum along the equatorial
plane. We intro... | [
{
"created": "Tue, 29 Jun 2021 13:54:13 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Jul 2021 10:27:24 GMT",
"version": "v2"
}
] | 2021-11-24 | [
[
"Gimeno-Soler",
"Sergio",
""
],
[
"Font",
"José A.",
""
],
[
"Herdeiro",
"Carlos",
""
],
[
"Radu",
"Eugen",
""
]
] | We present new equilibrium solutions of stationary models of magnetized thick disks (or tori) around Kerr black holes with synchronised scalar hair. The models reported here largely extend our previous results based on constant radial distributions of the specific angular momentum along the equatorial plane. We introdu... |
1103.3230 | Langmann Edwin | Edwin Langmann, Martin Sundin | Extrinsic curvature effects in brane-world scenarios | 24 pages; v2: typos corrected | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider models of bosons on curved 3+1 dimensional space-time embedded in
a higher dimensional flat ambient space. We propose to derive (rather than
postulate) equations of motions by assuming that a standard Klein-Gordon field
on ambient space is restricted to space-time by a strong confining potential.
This lea... | [
{
"created": "Wed, 16 Mar 2011 16:57:52 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Mar 2011 09:12:18 GMT",
"version": "v2"
}
] | 2011-04-01 | [
[
"Langmann",
"Edwin",
""
],
[
"Sundin",
"Martin",
""
]
] | We consider models of bosons on curved 3+1 dimensional space-time embedded in a higher dimensional flat ambient space. We propose to derive (rather than postulate) equations of motions by assuming that a standard Klein-Gordon field on ambient space is restricted to space-time by a strong confining potential. This leads... |
2212.13043 | Xue Zheng Zhu | Xuezheng Zhu | Spatially covariant gravity: Degeneracy condition and mimetic
formulation | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We make a perturbative analysis of spatially covariant gravity only
respecting spatial symmetries, of which the Lagrangian includes the dynamic
lapse function and the coupling term of spatial curvature and extrinsic
curvature. We show that the theory propagates 2 scalar degrees of freedom, as
long as the kinetic term... | [
{
"created": "Mon, 26 Dec 2022 08:51:04 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Dec 2022 03:46:10 GMT",
"version": "v2"
}
] | 2022-12-29 | [
[
"Zhu",
"Xuezheng",
""
]
] | We make a perturbative analysis of spatially covariant gravity only respecting spatial symmetries, of which the Lagrangian includes the dynamic lapse function and the coupling term of spatial curvature and extrinsic curvature. We show that the theory propagates 2 scalar degrees of freedom, as long as the kinetic terms ... |
1005.1637 | Carlos Peralta | B. Rodr\'iguez-Mueller, C. Peralta, W. Barreto and L. Rosales | Heat flow in the postquasistatic approximation | 5 pages, 5 figures | Phys.Rev.D82:044003,2010 | 10.1103/PhysRevD.82.044003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply the postquasistatic approximation to study the evolution of
spherically symmetric fluid distributions undergoing dissipation in the form of
radial heat flow. For a model which corresponds to an incompressible fluid
departing from the static equilibrium, it is not possible to go far from the
initial state aft... | [
{
"created": "Mon, 10 May 2010 19:57:51 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Aug 2010 18:44:48 GMT",
"version": "v2"
}
] | 2014-11-21 | [
[
"Rodríguez-Mueller",
"B.",
""
],
[
"Peralta",
"C.",
""
],
[
"Barreto",
"W.",
""
],
[
"Rosales",
"L.",
""
]
] | We apply the postquasistatic approximation to study the evolution of spherically symmetric fluid distributions undergoing dissipation in the form of radial heat flow. For a model which corresponds to an incompressible fluid departing from the static equilibrium, it is not possible to go far from the initial state after... |
2408.07674 | Yeinzon Rodriguez Garcia | Jhan N. Martinez (1), Jose F. Rodriguez (1,2), Laura M. Becerra (2,3),
Yeinzon Rodriguez (1,4), Gabriel Gomez (5) ((1) Universidad Industrial de
Santander, (2) ICRANet, (3) Universidad Mayor, (4) Universidad Antonio
Narino, (5) Universidad de Santiago de Chile) | Neutron stars in the generalized SU(2) Proca theory | LaTeX file in RevTeX 4.1 style, 14 pages, 9 figures | null | null | PI/UAN-2024-727FT | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The generalized SU(2) Proca theory is a vector-tensor modified gravity theory
characterized by an action that remains invariant under both diffeomorphisms
and global internal transformations of the SU(2) group. This study aims to
further explore the physical properties of the theory within astrophysical
contexts. Pre... | [
{
"created": "Wed, 14 Aug 2024 17:17:31 GMT",
"version": "v1"
}
] | 2024-08-15 | [
[
"Martinez",
"Jhan N.",
""
],
[
"Rodriguez",
"Jose F.",
""
],
[
"Becerra",
"Laura M.",
""
],
[
"Rodriguez",
"Yeinzon",
""
],
[
"Gomez",
"Gabriel",
""
]
] | The generalized SU(2) Proca theory is a vector-tensor modified gravity theory characterized by an action that remains invariant under both diffeomorphisms and global internal transformations of the SU(2) group. This study aims to further explore the physical properties of the theory within astrophysical contexts. Previ... |
1203.3171 | Ahmed Youssef | Ahmed Youssef | Do scale-invariant fluctuations imply the breaking of de Sitter
invariance? | 4 pages | null | 10.1016/j.physletb.2012.11.023 | MaPhy-AvH/2012-05 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quantization of the massless minimally coupled (mmc) scalar field in de
Sitter spacetime is known to be a non-trivial problem due to the appearance of
strong infrared (IR) effects. In particular, the scale-invariance of the CMB
power-spectrum - certainly one of the most successful predictions of modern
cosmology ... | [
{
"created": "Wed, 14 Mar 2012 18:38:20 GMT",
"version": "v1"
}
] | 2015-06-04 | [
[
"Youssef",
"Ahmed",
""
]
] | The quantization of the massless minimally coupled (mmc) scalar field in de Sitter spacetime is known to be a non-trivial problem due to the appearance of strong infrared (IR) effects. In particular, the scale-invariance of the CMB power-spectrum - certainly one of the most successful predictions of modern cosmology - ... |
1606.07611 | Eric Huguet | E. Huguet, J. Queva and J. Renaud | Massive scalar field on (A)dS space from a massless conformal field in
$\mathbb{R}^6$ | Revtex 4.1, 6 pages. In v3: New material added (references, relation
with mass ladder operator), accepted in JMP | J. Math. Phys. 61, 053506 (2020) | 10.1063/1.5132893 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show how the equations for the scalar field (including the massive,
massless, minimally and conformally coupled cases) on de Sitter and Anti-de
Sitter spaces can be obtained from both the SO$(2,4)$-invariant equation
$\square \phi = 0$ in $\mathbb{R}^6$ and two geometrical constraints defining
the (A)dS space. Apa... | [
{
"created": "Fri, 24 Jun 2016 09:10:29 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Jul 2017 12:09:40 GMT",
"version": "v2"
},
{
"created": "Mon, 4 May 2020 08:25:46 GMT",
"version": "v3"
}
] | 2020-08-11 | [
[
"Huguet",
"E.",
""
],
[
"Queva",
"J.",
""
],
[
"Renaud",
"J.",
""
]
] | We show how the equations for the scalar field (including the massive, massless, minimally and conformally coupled cases) on de Sitter and Anti-de Sitter spaces can be obtained from both the SO$(2,4)$-invariant equation $\square \phi = 0$ in $\mathbb{R}^6$ and two geometrical constraints defining the (A)dS space. Apart... |
1211.6884 | Alfonso Garc\'ia-Parrado G\'omez-Lobo Dr. | Alfonso Garc\'ia-Parrado G\'omez-Lobo and Jos\'e M. M. Senovilla | A set of invariant quality factors measuring the deviation from the Kerr
metric | 34 pages, 6 figures. References added, acknowledgments section
expanded. Presentation improved and role of the Killing vector change of
scale clarified. To appear in General Relativity and Gravitation | null | 10.1007/s10714-013-1518-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A number of scalar invariant characterizations of the Kerr solution are
presented. These characterizations come in the form of {\em quality factors}
defined in stationary space-times. A quality factor is a scalar quantity
varying in the interval $[0,1]$ with the value 1 being attained if and only if
the space-time is... | [
{
"created": "Thu, 29 Nov 2012 11:27:50 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Feb 2013 20:54:52 GMT",
"version": "v2"
},
{
"created": "Thu, 7 Mar 2013 09:39:23 GMT",
"version": "v3"
}
] | 2013-03-08 | [
[
"Gómez-Lobo",
"Alfonso García-Parrado",
""
],
[
"Senovilla",
"José M. M.",
""
]
] | A number of scalar invariant characterizations of the Kerr solution are presented. These characterizations come in the form of {\em quality factors} defined in stationary space-times. A quality factor is a scalar quantity varying in the interval $[0,1]$ with the value 1 being attained if and only if the space-time is l... |
0705.0674 | Simone Speziale | Etera R. Livine and Simone Speziale | A new spinfoam vertex for quantum gravity | 17+8 pages, 6 figures. v2 updated references | Phys.Rev.D76:084028,2007 | 10.1103/PhysRevD.76.084028 | pi-qg-45 | gr-qc hep-th | null | We introduce a new spinfoam vertex to be used in models of 4d quantum gravity
based on SU(2) and SO(4) BF theory plus constraints. It can be seen as the
conventional vertex of SU(2) BF theory, the 15j symbol, in a particular basis
constructed using SU(2) coherent states. This basis makes the geometric
interpretation ... | [
{
"created": "Fri, 4 May 2007 16:45:38 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Aug 2007 15:36:13 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Livine",
"Etera R.",
""
],
[
"Speziale",
"Simone",
""
]
] | We introduce a new spinfoam vertex to be used in models of 4d quantum gravity based on SU(2) and SO(4) BF theory plus constraints. It can be seen as the conventional vertex of SU(2) BF theory, the 15j symbol, in a particular basis constructed using SU(2) coherent states. This basis makes the geometric interpretation of... |
1411.3073 | Ryan Lang | Ryan N. Lang | Compact binary systems in scalar-tensor gravity. III. Scalar waves and
energy flux | 35 pages | Phys. Rev. D 91, 084027 (2015) | 10.1103/PhysRevD.91.084027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the scalar waveform generated by a binary of nonspinning compact
objects (black holes or neutron stars) in a general class of scalar-tensor
theories of gravity. The waveform is accurate to 1.5 post-Newtonian order
[$O((v/c)^3)$] beyond the leading-order tensor gravitational waves (the
"Newtonian quadrupole"... | [
{
"created": "Wed, 12 Nov 2014 05:33:28 GMT",
"version": "v1"
},
{
"created": "Fri, 8 May 2015 22:35:22 GMT",
"version": "v2"
}
] | 2015-05-12 | [
[
"Lang",
"Ryan N.",
""
]
] | We derive the scalar waveform generated by a binary of nonspinning compact objects (black holes or neutron stars) in a general class of scalar-tensor theories of gravity. The waveform is accurate to 1.5 post-Newtonian order [$O((v/c)^3)$] beyond the leading-order tensor gravitational waves (the "Newtonian quadrupole").... |
2002.10922 | Abraham Harte | Abraham I. Harte and Michael T. Gaffney | Extended-body effects and rocket-free orbital maneuvering | 11 pages, 4 figures, considerably expanded discussion | Acta Astronautica 178, 625 (2020) | 10.1016/j.actaastro.2020.09.038 | null | gr-qc physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The trajectory of a spherical object which falls freely in a gravitational
field is fixed by its initial position and velocity. However, an object which
can control its shape can also control its motion: Except where forbidden by
symmetries and their associated conservation laws, a shape-changing (but
rocket-free) sp... | [
{
"created": "Tue, 25 Feb 2020 14:54:22 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Jul 2020 10:01:01 GMT",
"version": "v2"
}
] | 2020-10-22 | [
[
"Harte",
"Abraham I.",
""
],
[
"Gaffney",
"Michael T.",
""
]
] | The trajectory of a spherical object which falls freely in a gravitational field is fixed by its initial position and velocity. However, an object which can control its shape can also control its motion: Except where forbidden by symmetries and their associated conservation laws, a shape-changing (but rocket-free) spac... |
1812.08643 | Benjamin Lackey | Benjamin D. Lackey, Michael P\"urrer, Andrea Taracchini, Sylvain
Marsat | Surrogate model for an aligned-spin effective one body waveform model of
binary neutron star inspirals using Gaussian process regression | 19 pages, 10 figures, submitted to PRD | Phys. Rev. D 100, 024002 (2019) | 10.1103/PhysRevD.100.024002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Fast and accurate waveform models are necessary for measuring the properties
of inspiraling binary neutron star systems such as GW170817. We present a
frequency-domain surrogate version of the aligned-spin binary neutron star
waveform model using the effective one body formalism known as SEOBNRv4T. This
model include... | [
{
"created": "Thu, 20 Dec 2018 15:44:27 GMT",
"version": "v1"
}
] | 2019-07-10 | [
[
"Lackey",
"Benjamin D.",
""
],
[
"Pürrer",
"Michael",
""
],
[
"Taracchini",
"Andrea",
""
],
[
"Marsat",
"Sylvain",
""
]
] | Fast and accurate waveform models are necessary for measuring the properties of inspiraling binary neutron star systems such as GW170817. We present a frequency-domain surrogate version of the aligned-spin binary neutron star waveform model using the effective one body formalism known as SEOBNRv4T. This model includes ... |
1202.0966 | Fay\c{c}al Hammad | Fay\c{c}al Hammad | Erratum to: An Entropy Functional for Riemann-Cartan Space-Times | 15 pages. These are the preprints of the original paper and its
erratum published in Int. J. Theor. Phys | Int J Theor Phys 51 (2012) 362-373; Erratum - Int J Theor Phys. 52
(2013) 4592-4593 | 10.1007/s10773-011-0913-9 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We correct the entropy functional constructed in Int. J. Theor. Phys. 51:362
(2012). The 'on-shell' functional one obtains from this correct functional
possesses a holographic structure without imposing any constraint on the
spin-angular momentum tensor of matter, in contrast to the conclusion made in
the above paper... | [
{
"created": "Sun, 5 Feb 2012 14:48:17 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Dec 2013 18:53:08 GMT",
"version": "v2"
},
{
"created": "Thu, 5 Dec 2013 07:33:59 GMT",
"version": "v3"
}
] | 2013-12-06 | [
[
"Hammad",
"Fayçal",
""
]
] | We correct the entropy functional constructed in Int. J. Theor. Phys. 51:362 (2012). The 'on-shell' functional one obtains from this correct functional possesses a holographic structure without imposing any constraint on the spin-angular momentum tensor of matter, in contrast to the conclusion made in the above paper. |
1710.05971 | Muhammad Sharif | M. Sharif and S. Mumtaz | Dynamical Instability of Charged Gaseous Cylinder | 7 pages, 4 figures | Mon. Notices Roy. Astron. Soc. 471(2017)1215-1221 | 10.1093/mnras/stx1695 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we discuss dynamical instability of charged dissipative
cylinder under radial oscillations. For this purpose, we follow the Eulerian
and Lagrangian approaches to evaluate linearized perturbed equation of motion.
We formulate perturbed pressure in terms of adiabatic index by applying the
conservation of... | [
{
"created": "Thu, 12 Oct 2017 05:35:25 GMT",
"version": "v1"
}
] | 2017-10-25 | [
[
"Sharif",
"M.",
""
],
[
"Mumtaz",
"S.",
""
]
] | In this paper, we discuss dynamical instability of charged dissipative cylinder under radial oscillations. For this purpose, we follow the Eulerian and Lagrangian approaches to evaluate linearized perturbed equation of motion. We formulate perturbed pressure in terms of adiabatic index by applying the conservation of b... |
0912.3011 | Robert C. Helling | Robert C. Helling | Higher curvature counter terms cause the bounce in loop cosmology | Added references | null | null | LMU-ASC 58/09 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the loop approach to the quantisation of gravity, one uses a Hilbert space
which is too singular for some operators to be realised as derivatives. This is
usually addressed by instead using finite difference operators at the Planck
scale, a process known as ``polymerisation''. In the symmetry reduced example
of lo... | [
{
"created": "Tue, 15 Dec 2009 21:33:23 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Dec 2009 17:51:58 GMT",
"version": "v2"
}
] | 2009-12-17 | [
[
"Helling",
"Robert C.",
""
]
] | In the loop approach to the quantisation of gravity, one uses a Hilbert space which is too singular for some operators to be realised as derivatives. This is usually addressed by instead using finite difference operators at the Planck scale, a process known as ``polymerisation''. In the symmetry reduced example of loop... |
1703.10070 | Sharmanthie Fernando | Nora Breton, Tyler Clark and Sharmanthie Fernando | Quasinormal modes and absorption cross sections of Born-Infeld-de Sitter
black holes | Accepted to be published in International Journal of Modern Physics D | International Journal of Modern Physics D 26, no:10, 1750112
(2017) | 10.1142/S0218271817501127 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have studied QNM modes and absorption cross sections of
Born-Infeld-de Sitter black holes. WKB approximation is employed to compute the
QNM modes of massless scalar fields. We have also used null geodesics to
compute quasi-normal modes in the eikonal approximation. In the eikonal limit
QNMs of black... | [
{
"created": "Wed, 29 Mar 2017 14:37:25 GMT",
"version": "v1"
},
{
"created": "Fri, 31 Mar 2017 17:47:13 GMT",
"version": "v2"
}
] | 2018-07-31 | [
[
"Breton",
"Nora",
""
],
[
"Clark",
"Tyler",
""
],
[
"Fernando",
"Sharmanthie",
""
]
] | In this paper, we have studied QNM modes and absorption cross sections of Born-Infeld-de Sitter black holes. WKB approximation is employed to compute the QNM modes of massless scalar fields. We have also used null geodesics to compute quasi-normal modes in the eikonal approximation. In the eikonal limit QNMs of black h... |
1805.04133 | Beatriz Elizaga Navascu\'es | Beatriz Elizaga Navascu\'es, Guillermo A. Mena Marug\'an and Santiago
Prado Loy | Backreaction of fermionic perturbations in the Hamiltonian of hybrid
loop quantum cosmology | 20 pages, matches published version | Phys. Rev. D 98, 063535 (2018) | 10.1103/PhysRevD.98.063535 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the freedom available in hybrid loop quantum cosmology to define
canonical variables for the matter content and investigate whether this can be
used to derive a quantum field theory with good properties for the matter
sector. We study a primordial, inflationary, cosmological spacetime with
inhomogeneous pe... | [
{
"created": "Thu, 10 May 2018 18:53:52 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Oct 2018 08:35:37 GMT",
"version": "v2"
}
] | 2018-10-02 | [
[
"Navascués",
"Beatriz Elizaga",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
],
[
"Loy",
"Santiago Prado",
""
]
] | We discuss the freedom available in hybrid loop quantum cosmology to define canonical variables for the matter content and investigate whether this can be used to derive a quantum field theory with good properties for the matter sector. We study a primordial, inflationary, cosmological spacetime with inhomogeneous pert... |
gr-qc/9511022 | null | Dieter R. Brill | Multi-Black-Hole Geometries in (2+1)-Dimensional Gravity | LaTeX, 10 pages, 3 figures in LaTeX picture environment | Phys.Rev.D53:4133-4176,1996 | 10.1103/PhysRevD.53.4133 | UMDGR 96-47 | gr-qc hep-th | null | Generalizations of the Black Hole geometry of Ba\~nados, Teitelboim and
Zanelli (BTZ) are presented. The theory is three-dimensional vacuum Einstein
theory with a negative cosmological constant. The $n$-black-hole solution has
$n$ asymptotically anti-de Sitter ``exterior" regions that join in one
``interior" region. ... | [
{
"created": "Mon, 6 Nov 1995 18:05:25 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Brill",
"Dieter R.",
""
]
] | Generalizations of the Black Hole geometry of Ba\~nados, Teitelboim and Zanelli (BTZ) are presented. The theory is three-dimensional vacuum Einstein theory with a negative cosmological constant. The $n$-black-hole solution has $n$ asymptotically anti-de Sitter ``exterior" regions that join in one ``interior" region. Th... |
1703.02779 | Nadereh Namavarian | Nadereh Namavarian | Trace anomaly and invariance under transformation of units | 8 pages | Phys. Rev. D 95, 104015 (2017) | 10.1103/PhysRevD.95.104015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Paying attention to conformal invariance as the invariance under local
transformations of units of measure, we take a conformal invariant quantum
field as a quantum matter theory in which one has the freedom to choose the
values of units of mass, length and time arbitrarily at each point. To be able
to have this view... | [
{
"created": "Wed, 8 Mar 2017 10:43:18 GMT",
"version": "v1"
}
] | 2017-05-17 | [
[
"Namavarian",
"Nadereh",
""
]
] | Paying attention to conformal invariance as the invariance under local transformations of units of measure, we take a conformal invariant quantum field as a quantum matter theory in which one has the freedom to choose the values of units of mass, length and time arbitrarily at each point. To be able to have this view, ... |
gr-qc/9711071 | Wang Bin | Ru-Keng Su, Bin Wang, P.K.N.Yu and E.C.M.Young | A possible explanation of the clash for black hole entropy in the
extremal limit | 9 pages, Latex, no figures | null | null | null | gr-qc | null | It is shown that the classical entropy of the extremal black hole depends on
two different limits procedures. If we first take the extremal limit and then
the boundary limit, the entropy is zero; if we do it the other way round, we
get the Bekenstein-Hawking entropy. By means of the brick wall model, the
quantum entr... | [
{
"created": "Mon, 24 Nov 1997 09:05:05 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Su",
"Ru-Keng",
""
],
[
"Wang",
"Bin",
""
],
[
"Yu",
"P. K. N.",
""
],
[
"Young",
"E. C. M.",
""
]
] | It is shown that the classical entropy of the extremal black hole depends on two different limits procedures. If we first take the extremal limit and then the boundary limit, the entropy is zero; if we do it the other way round, we get the Bekenstein-Hawking entropy. By means of the brick wall model, the quantum entrop... |
0812.3438 | R. Aldrovandi | R. Aldrovandi and J. G. Pereira | De Sitter Special Relativity: Effects on Cosmology | 12 pages | Grav.Cosmol.15:287-294,2009 | 10.1134/S020228930904001X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The main consequences of de Sitter Special Relativity to the Standard
Cosmological Model of Physical Cosmology are examined. The cosmological
constant Lambda appears, in this theory, as a manifestation of the proper
conformal current, which must be added to the usual energy-momentum density. As
that conformal current... | [
{
"created": "Thu, 18 Dec 2008 00:31:51 GMT",
"version": "v1"
}
] | 2010-01-08 | [
[
"Aldrovandi",
"R.",
""
],
[
"Pereira",
"J. G.",
""
]
] | The main consequences of de Sitter Special Relativity to the Standard Cosmological Model of Physical Cosmology are examined. The cosmological constant Lambda appears, in this theory, as a manifestation of the proper conformal current, which must be added to the usual energy-momentum density. As that conformal current i... |
2101.09524 | \"Ozg\"ur \"Okc\"u | \"Ozg\"ur \"Okc\"u, Ekrem Aydiner | Observational Tests of the Generalized Uncertainty Principle: Shapiro
Time Delay, Gravitational Redshift, and Geodetic Precession | 17 pages, 1 figure, 1 table. Accepted for publication in Nuclear
Physics B | null | 10.1016/j.nuclphysb.2021.115324 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is based on the study of the paper of Scardigli and Casadio [Eur.
Phys. J. C (2015) 75:425] where the authors computed the light deflection and
perihelion precession for the Generalized Uncertainty Principle (GUP) modified
Schwarzschild metric. In the present work, we computed the gravitational tests
such ... | [
{
"created": "Sat, 23 Jan 2021 15:35:42 GMT",
"version": "v1"
}
] | 2021-01-26 | [
[
"Ökcü",
"Özgür",
""
],
[
"Aydiner",
"Ekrem",
""
]
] | This paper is based on the study of the paper of Scardigli and Casadio [Eur. Phys. J. C (2015) 75:425] where the authors computed the light deflection and perihelion precession for the Generalized Uncertainty Principle (GUP) modified Schwarzschild metric. In the present work, we computed the gravitational tests such as... |
2007.10336 | Alexandru Lupsasca | Samuel E. Gralla, Alexandru Lupsasca | On the Observable Shape of Black Hole Photon Rings | 16 pages, 8 figures | null | 10.1103/PhysRevD.102.124003 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the prospect of measuring a black hole photon ring, in previous
work we explored the interferometric signature produced by a bright, narrow
curve in the sky. Interferometric observations of such a curve measure its
"projected position function" $\mathbf{r}\cdot\hat{\mathbf{n}}$, where
$\mathbf{r}$ parame... | [
{
"created": "Mon, 20 Jul 2020 18:00:00 GMT",
"version": "v1"
}
] | 2020-12-09 | [
[
"Gralla",
"Samuel E.",
""
],
[
"Lupsasca",
"Alexandru",
""
]
] | Motivated by the prospect of measuring a black hole photon ring, in previous work we explored the interferometric signature produced by a bright, narrow curve in the sky. Interferometric observations of such a curve measure its "projected position function" $\mathbf{r}\cdot\hat{\mathbf{n}}$, where $\mathbf{r}$ paramete... |
1606.04226 | Davide Gerosa | Davide Gerosa, Christopher J. Moore | Black hole kicks as new gravitational wave observables | 6 pages, 3 figures. Accepted for publication in Physical Review
Letters | Phys. Rev. Lett. 117, 011101 (2016) | 10.1103/PhysRevLett.117.011101 | LIGO-P1600118 | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Generic black hole binaries radiate gravitational waves anisotropically,
imparting a recoil, or kick, velocity to the merger remnant. If a component of
the kick along the line of sight is present, gravitational waves emitted during
the final orbits and merger will be gradually Doppler shifted as the kick
builds up. W... | [
{
"created": "Tue, 14 Jun 2016 07:26:10 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Jun 2016 17:43:17 GMT",
"version": "v2"
}
] | 2016-06-30 | [
[
"Gerosa",
"Davide",
""
],
[
"Moore",
"Christopher J.",
""
]
] | Generic black hole binaries radiate gravitational waves anisotropically, imparting a recoil, or kick, velocity to the merger remnant. If a component of the kick along the line of sight is present, gravitational waves emitted during the final orbits and merger will be gradually Doppler shifted as the kick builds up. We ... |
1306.5177 | Sante Carloni Dr | C. Garc\'ia-Meca, S. Carloni, C. Barcel\'o, G. Jannes, J.
S\'anchez-Dehesa, A. Mart\'inez | Analogue Transformations in Physics and their Application to Acoustics | 29 pages, 11 figures, published on Scientific Reports | Scientific Reports 3, 2009 (2013) | 10.1038/srep02009 | null | gr-qc cond-mat.mes-hall cond-mat.mtrl-sci | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Transformation optics has shaped up a revolutionary electromagnetic design
paradigm, enabling scientists to build astonishing devices such as invisibility
cloaks. Unfortunately, the application of transformation techniques to other
branches of physics is often constrained by the structure of the field
equations. We d... | [
{
"created": "Fri, 21 Jun 2013 15:46:42 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Jun 2015 14:45:16 GMT",
"version": "v2"
}
] | 2015-06-11 | [
[
"García-Meca",
"C.",
""
],
[
"Carloni",
"S.",
""
],
[
"Barceló",
"C.",
""
],
[
"Jannes",
"G.",
""
],
[
"Sánchez-Dehesa",
"J.",
""
],
[
"Martínez",
"A.",
""
]
] | Transformation optics has shaped up a revolutionary electromagnetic design paradigm, enabling scientists to build astonishing devices such as invisibility cloaks. Unfortunately, the application of transformation techniques to other branches of physics is often constrained by the structure of the field equations. We dev... |
0704.3936 | Leonardo Fernandez-Jambrina | L. Fernandez-Jambrina | Hidden past of dark energy cosmological models | 6 pages, 1 figure, RevTeX4, new references and comments added | Phys.Lett.B656:9-14,2007 | 10.1016/j.physletb.2007.08.091 | null | gr-qc astro-ph hep-th | null | In this paper we analyse the possibility of having homogeneous isotropic
cosmological models with observers reaching $t=\infty$ in finite proper time.
It is shown that just observationally-suggested dark energy models with
$w\in(-5/3,-1)$ show this feature and that they are endowed with an exotic
curvature singularit... | [
{
"created": "Mon, 30 Apr 2007 13:30:04 GMT",
"version": "v1"
},
{
"created": "Thu, 3 May 2007 10:08:42 GMT",
"version": "v2"
},
{
"created": "Thu, 27 Sep 2007 17:05:12 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Fernandez-Jambrina",
"L.",
""
]
] | In this paper we analyse the possibility of having homogeneous isotropic cosmological models with observers reaching $t=\infty$ in finite proper time. It is shown that just observationally-suggested dark energy models with $w\in(-5/3,-1)$ show this feature and that they are endowed with an exotic curvature singularity.... |
1003.5690 | Alexander Zhuk | Maxim Eingorn, Alexander Zhuk | Classical tests of multidimensional gravity: negative result | 18 pages, LaTex | Class.Quant.Grav.27:205014,2010 | 10.1088/0264-9381/27/20/205014 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Kaluza-Klein model with toroidal extra dimensions, we obtain the metric
coefficients in a weak-field approximation for delta-shaped matter sources.
These metric coefficients are applied to calculate the formulas for frequency
shift, perihelion shift, deflection of light and parameterized post-Newtonian
(PPN) param... | [
{
"created": "Mon, 29 Mar 2010 21:51:07 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Oct 2010 15:09:49 GMT",
"version": "v2"
}
] | 2010-10-29 | [
[
"Eingorn",
"Maxim",
""
],
[
"Zhuk",
"Alexander",
""
]
] | In Kaluza-Klein model with toroidal extra dimensions, we obtain the metric coefficients in a weak-field approximation for delta-shaped matter sources. These metric coefficients are applied to calculate the formulas for frequency shift, perihelion shift, deflection of light and parameterized post-Newtonian (PPN) paramet... |
1905.10414 | Nils A. Nilsson | Nils A. Nilsson, Kellie O'Neal-Ault, Quentin G. Bailey | A 3+1 Decomposition of the Minimal Standard-Model Extension
Gravitational Sector | Presented at the Eighth Meeting on CPT and Lorentz Symmetry,
Bloomington, Indiana, May 12-16, 2019 | CPT and Lorentz Symmetry, pp. 198-200 (2020) | 10.1142/9789811213984_0050 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The 3+1 (ADM) formulation of General Relativity is used in, for example,
canonical quantum gravity and numerical relativity. Here we present a 3+1
decomposition of the minimal Standard-Model Extension gravity Lagrangian. By
choosing the leaves of foliation to lie along a timelike vector field we write
the theory in a... | [
{
"created": "Fri, 24 May 2019 19:14:02 GMT",
"version": "v1"
}
] | 2020-04-21 | [
[
"Nilsson",
"Nils A.",
""
],
[
"O'Neal-Ault",
"Kellie",
""
],
[
"Bailey",
"Quentin G.",
""
]
] | The 3+1 (ADM) formulation of General Relativity is used in, for example, canonical quantum gravity and numerical relativity. Here we present a 3+1 decomposition of the minimal Standard-Model Extension gravity Lagrangian. By choosing the leaves of foliation to lie along a timelike vector field we write the theory in a f... |
1607.03923 | S. I. Kruglov | S.I. Kruglov | Nonlinear Electromagnetic Fields As a Source of Universe Acceleration | 20 pages, 4 figures, to appear in IJMPA | null | 10.1142/S0217751X16500585 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A model of nonlinear electromagnetic fields with a dimensional parameter
$\beta$ is proposed. From PVLAS experiment the bound on the parameter $\beta$
was obtained. Electromagnetic fields are coupled with the gravitation field and
we show that the universe accelerates due to nonlinear electromagnetic fields.
The magn... | [
{
"created": "Fri, 8 Apr 2016 16:12:17 GMT",
"version": "v1"
}
] | 2016-07-15 | [
[
"Kruglov",
"S. I.",
""
]
] | A model of nonlinear electromagnetic fields with a dimensional parameter $\beta$ is proposed. From PVLAS experiment the bound on the parameter $\beta$ was obtained. Electromagnetic fields are coupled with the gravitation field and we show that the universe accelerates due to nonlinear electromagnetic fields. The magnet... |
gr-qc/0405025 | Frank Potter | Franklin Potter and Howard G. Preston | Gravitational Lensing by Galaxy Quantization States | 6 pages | null | null | null | gr-qc | null | We show how our theory of large-scale gravitational quantization explains the
large angle gravitational lensing by galaxies without requiring "dark matter".
A galaxy is treated as a collective system of billions of stars in each
quantization state with each star experiencing an average gravitational
environment analo... | [
{
"created": "Thu, 6 May 2004 02:16:24 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Potter",
"Franklin",
""
],
[
"Preston",
"Howard G.",
""
]
] | We show how our theory of large-scale gravitational quantization explains the large angle gravitational lensing by galaxies without requiring "dark matter". A galaxy is treated as a collective system of billions of stars in each quantization state with each star experiencing an average gravitational environment analogo... |
gr-qc/9905100 | Paul Matthew Saffin | J. D. Barrow, Y. Gaspar and P. M. Saffin | Some exact non-vacuum Bianchi VI0 and VII0 instantons | latex, 15 pages with 3 eps figures | Class.Quant.Grav. 17 (2000) 1435-1445 | 10.1088/0264-9381/17/6/308 | DAMTP-1999-71 | gr-qc astro-ph | null | We report some new exact instantons in general relativity. These solutions
are K\"ahler and fall into the symmetry classes of Bianchi types VI0 and VII0,
with matter content of a stiff fluid. The qualitative behaviour of the
solutions is presented, and we compare it to the known results of the
corresponding self-dual... | [
{
"created": "Thu, 27 May 1999 17:54:30 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Barrow",
"J. D.",
""
],
[
"Gaspar",
"Y.",
""
],
[
"Saffin",
"P. M.",
""
]
] | We report some new exact instantons in general relativity. These solutions are K\"ahler and fall into the symmetry classes of Bianchi types VI0 and VII0, with matter content of a stiff fluid. The qualitative behaviour of the solutions is presented, and we compare it to the known results of the corresponding self-dual B... |
2403.12634 | Patrick Bourg | Patrick Bourg, Benjamin Leather, Marc Casals, Adam Pound, Barry
Wardell | Implementation of a GHZ-Teukolsky puncture scheme for gravitational
self-force calculations | 30 pages, 9 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Post-adiabatic models of extreme- and intermediate-mass-ratio inspirals will
require calculations of second-order gravitational self-force effects in the
spacetime of a spinning, Kerr black hole. We take a step toward such
calculations by implementing the recently formulated Teukolsky puncture scheme
with Green-Holla... | [
{
"created": "Tue, 19 Mar 2024 11:04:46 GMT",
"version": "v1"
}
] | 2024-03-20 | [
[
"Bourg",
"Patrick",
""
],
[
"Leather",
"Benjamin",
""
],
[
"Casals",
"Marc",
""
],
[
"Pound",
"Adam",
""
],
[
"Wardell",
"Barry",
""
]
] | Post-adiabatic models of extreme- and intermediate-mass-ratio inspirals will require calculations of second-order gravitational self-force effects in the spacetime of a spinning, Kerr black hole. We take a step toward such calculations by implementing the recently formulated Teukolsky puncture scheme with Green-Holland... |
2105.12283 | Luis L\'opez | Nora Bret\'on and L. A. L\'opez | Birefringence and QuasiNormal Modes of the Einstein-Euler-Heisenberg
Black Hole | null | Phys. Rev. D 104, 024064 (2021) | 10.1103/PhysRevD.104.024064 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this contribution we study the birefringence and the quasinormal modes
(QNM) in the eikonal approximation, of the Einstein-Euler-Heisenberg black hole
(EEH-BH) . The EEH-BH is an exact solution of the Einstein equations coupled to
the Euler-Heisenberg nonlinear electrodynamics. It is well known that in the
presenc... | [
{
"created": "Wed, 26 May 2021 01:07:32 GMT",
"version": "v1"
}
] | 2021-08-04 | [
[
"Bretón",
"Nora",
""
],
[
"López",
"L. A.",
""
]
] | In this contribution we study the birefringence and the quasinormal modes (QNM) in the eikonal approximation, of the Einstein-Euler-Heisenberg black hole (EEH-BH) . The EEH-BH is an exact solution of the Einstein equations coupled to the Euler-Heisenberg nonlinear electrodynamics. It is well known that in the presence ... |
gr-qc/0003029 | Jeffrey Winicour | Jeffrey Winicour | A New Way to Make Waves | In Proceeding of CIMENICS 2000, The Vth International Congress on
Numerical Methods in Engineering and Applied Science (Puerto La Cruz,
Venezuela, March 2000) | null | null | null | gr-qc | null | I describe a new algorithm for solving nonlinear wave equations. In this
approach, evolution takes place on characteristic hypersurfaces. The algorithm
is directly applicable to electromagnetic, Yang-Mills and gravitational fields
and other systems described by second differential order hyperbolic equations.
The basi... | [
{
"created": "Wed, 8 Mar 2000 10:58:02 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Winicour",
"Jeffrey",
""
]
] | I describe a new algorithm for solving nonlinear wave equations. In this approach, evolution takes place on characteristic hypersurfaces. The algorithm is directly applicable to electromagnetic, Yang-Mills and gravitational fields and other systems described by second differential order hyperbolic equations. The basic ... |
2110.02713 | Hamid Reza Sepangi | Mohaddese Heydari-Fard, Malihe Heydari-Fard, Hamid Reza Sepangi | On null geodesics and shadow of hairy black holes in
Einstein-Maxwell-dilaton gravity | 19 pages, 13 figures, to appear in PRD | Phys. Rev. D 105, 124009 (2022) | 10.1103/PhysRevD.105.124009 | null | gr-qc hep-th | http://creativecommons.org/publicdomain/zero/1.0/ | The time-like and null-like geodesics around compact objects are some of the
best tools to classify and understand the structure of a space-time. In this
paper, we study the null geodesics around charged static dilaton black holes in
Einstein-Maxwell-dilaton gravity. The physical parameters for non-radial
geodesics i... | [
{
"created": "Wed, 6 Oct 2021 13:00:45 GMT",
"version": "v1"
},
{
"created": "Thu, 12 May 2022 11:26:28 GMT",
"version": "v2"
}
] | 2022-06-22 | [
[
"Heydari-Fard",
"Mohaddese",
""
],
[
"Heydari-Fard",
"Malihe",
""
],
[
"Sepangi",
"Hamid Reza",
""
]
] | The time-like and null-like geodesics around compact objects are some of the best tools to classify and understand the structure of a space-time. In this paper, we study the null geodesics around charged static dilaton black holes in Einstein-Maxwell-dilaton gravity. The physical parameters for non-radial geodesics inc... |
1701.07934 | Ramon Herrera | Ramon Herrera | G-Warm inflation | 23 pages, 4 figures, Accepted for publication in JCAP | null | 10.1088/1475-7516/2017/05/029 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A warm inflationary universe in the context of Galileon model or G-model is
studied. Under a general formalism we study the inflationary dynamics and the
cosmological perturbations considering a coupling of the form
$G(\phi,X)=g(\phi)\,X$. As a concrete example, we consider an exponential
potential together with the ... | [
{
"created": "Fri, 27 Jan 2017 03:41:09 GMT",
"version": "v1"
},
{
"created": "Wed, 10 May 2017 18:42:35 GMT",
"version": "v2"
}
] | 2017-05-24 | [
[
"Herrera",
"Ramon",
""
]
] | A warm inflationary universe in the context of Galileon model or G-model is studied. Under a general formalism we study the inflationary dynamics and the cosmological perturbations considering a coupling of the form $G(\phi,X)=g(\phi)\,X$. As a concrete example, we consider an exponential potential together with the ca... |
gr-qc/9806018 | Scott A. Hughes | Scott A. Hughes and Kip S. Thorne | Seismic gravity-gradient noise in interferometric gravitational-wave
detectors | 30 pages, Revtex, 12 figures, submitted to Phys Rev D | Phys.Rev.D58:122002,1998 | 10.1103/PhysRevD.58.122002 | GRP-500 | gr-qc | null | When ambient seismic waves pass near an interferometric gravitational-wave
detector, they induce density perturbations in the earth which produce
fluctuating gravitational forces on the interferometer's test masses. These
forces mimic a stochastic background of gravitational waves and thus constitute
noise. We comput... | [
{
"created": "Wed, 3 Jun 1998 22:08:25 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Hughes",
"Scott A.",
""
],
[
"Thorne",
"Kip S.",
""
]
] | When ambient seismic waves pass near an interferometric gravitational-wave detector, they induce density perturbations in the earth which produce fluctuating gravitational forces on the interferometer's test masses. These forces mimic a stochastic background of gravitational waves and thus constitute noise. We compute ... |
2106.05829 | Sebastian Szybka | Krzysztof G{\l}\'od, Szymon Sikora, Sebastian J. Szybka | Example of cross-polarized standing gravitational waves | 19 pages, 6 figures; improved version | Phys. Rev. D 106, 124022 (2022) | 10.1103/PhysRevD.106.124022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use a cosmological counterpart of the cylindrical Halilsoy solution to
illustrate properties of cross-polarized standing gravitational waves.
| [
{
"created": "Thu, 10 Jun 2021 15:48:19 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Dec 2022 20:48:50 GMT",
"version": "v2"
}
] | 2022-12-23 | [
[
"Głód",
"Krzysztof",
""
],
[
"Sikora",
"Szymon",
""
],
[
"Szybka",
"Sebastian J.",
""
]
] | We use a cosmological counterpart of the cylindrical Halilsoy solution to illustrate properties of cross-polarized standing gravitational waves. |
gr-qc/9809023 | Peter H\"ubner | Othmar Brodbeck, Simonetta Frittelli, Peter Huebner, Oscar A. Reula | Einstein's Equations with Asymptotically Stable Constraint Propagation | 23 pages, submitted to JMP, added reference for section 2 | J.Math.Phys. 40 (1999) 909-923 | 10.1063/1.532694 | AEI preprint 091 | gr-qc | null | We introduce a proposal to modify Einstein's equations by embedding them in a
larger symmetric hyperbolic system. The additional dynamical variables of the
modified system are essentially first integrals of the original constraints.
The extended system of equations reproduces the usual dynamics on the
constraint surf... | [
{
"created": "Fri, 4 Sep 1998 12:33:53 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Sep 1998 09:45:39 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Brodbeck",
"Othmar",
""
],
[
"Frittelli",
"Simonetta",
""
],
[
"Huebner",
"Peter",
""
],
[
"Reula",
"Oscar A.",
""
]
] | We introduce a proposal to modify Einstein's equations by embedding them in a larger symmetric hyperbolic system. The additional dynamical variables of the modified system are essentially first integrals of the original constraints. The extended system of equations reproduces the usual dynamics on the constraint surfac... |
1405.3915 | T. P. Singh | Anushrut Sharma and Tejinder P. Singh | How the quantum emerges from gravity | 6 pages. Honorable mention in the Gravity Research Foundation 2014
Essay Contest. Based on the more detailed paper arXiv:1403.2231 | Int. J. Mod. Phys. 23, 1442007 (2014) | 10.1142/S0218271814420073 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dynamics of a massive, relativistic spinning particle could be described
either by the Dirac equation or by the Kerr solution of Einstein equations.
However, one does not know a priori as to which of the two systems of equations
should be used in a given situation, and the choice is dictated by experiments.
It is... | [
{
"created": "Thu, 15 May 2014 17:08:56 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Sharma",
"Anushrut",
""
],
[
"Singh",
"Tejinder P.",
""
]
] | The dynamics of a massive, relativistic spinning particle could be described either by the Dirac equation or by the Kerr solution of Einstein equations. However, one does not know a priori as to which of the two systems of equations should be used in a given situation, and the choice is dictated by experiments. It is e... |
1903.10411 | Alessia Platania | Alessia Platania | Dynamical renormalization of black-hole spacetimes | 7 pages, 1 figure | null | 10.1140/epjc/s10052-019-6990-2 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a black-hole spacetime which includes the running of the
gravitational coupling in a self-consistent way. Starting from a classical
Schwarzschild black hole, the backreaction effects produced by the running
Newton's coupling are taken into account iteratively. The sequence, described
by a simple recurren... | [
{
"created": "Mon, 25 Mar 2019 15:50:33 GMT",
"version": "v1"
}
] | 2019-06-26 | [
[
"Platania",
"Alessia",
""
]
] | We construct a black-hole spacetime which includes the running of the gravitational coupling in a self-consistent way. Starting from a classical Schwarzschild black hole, the backreaction effects produced by the running Newton's coupling are taken into account iteratively. The sequence, described by a simple recurrence... |
2407.11185 | Emilio Rub\'in de Celis | Cecilia Tomasini, Claudio Simeone and Emilio Rub\'in de Celis | Tides and traversability in gravastars and other related geometries | 14 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Tidal effects related to the traversability across thin shells are examined
in spherically symmetric geometries. We focus mainly on shells separating inner
from outer regions of gravastars (de Sitter -- i.e., $\Lambda>0$ -- interior
and Schwarzschild exterior of mass parameter $M$), but we also examine other
related ... | [
{
"created": "Mon, 15 Jul 2024 19:16:28 GMT",
"version": "v1"
}
] | 2024-07-17 | [
[
"Tomasini",
"Cecilia",
""
],
[
"Simeone",
"Claudio",
""
],
[
"de Celis",
"Emilio Rubín",
""
]
] | Tidal effects related to the traversability across thin shells are examined in spherically symmetric geometries. We focus mainly on shells separating inner from outer regions of gravastars (de Sitter -- i.e., $\Lambda>0$ -- interior and Schwarzschild exterior of mass parameter $M$), but we also examine other related ge... |
gr-qc/9412009 | Jacques Legare | J. Legare and J.W. Moffat | Field Equations and Conservation Laws in the Nonsymmetric Gravitational
Theory | 16 pages, RevTeX. Additional equations supplied | null | 10.1007/BF02105322 | UTPT-94-36 | gr-qc | null | The field equations in the nonsymmetric gravitational theory are derived from
a Lagrangian density using a first-order formalism. Using the general
covariance of the Lagrangian density, conservation laws and tensor identities
are derived. Among these are the generalized Bianchi identities and the law of
energy-moment... | [
{
"created": "Fri, 2 Dec 1994 14:40:58 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Dec 1994 21:20:56 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Legare",
"J.",
""
],
[
"Moffat",
"J. W.",
""
]
] | The field equations in the nonsymmetric gravitational theory are derived from a Lagrangian density using a first-order formalism. Using the general covariance of the Lagrangian density, conservation laws and tensor identities are derived. Among these are the generalized Bianchi identities and the law of energy-momentum... |
1207.0230 | Douglas A. Singleton | Sujoy Kumar Modak and Douglas Singleton | Inflation with a graceful exit and entrance driven by Hawking radiation | 19 pages, 2 figures revtex, matches PRD published version | Phys.Rev. D86 (2012) 123515 | 10.1103/PhysRevD.86.123515 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a model for cosmological inflation which has a natural "turn on"
and a natural "turn off" mechanism. In our model inflation is driven by the
Hawking-like radiation that occurs in Friedman-Robertson-Walker (FRW)
space-time. This Hawking-like radiation results in an effective negative
pressure "fluid" which ... | [
{
"created": "Sun, 1 Jul 2012 17:26:55 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Dec 2012 20:23:09 GMT",
"version": "v2"
}
] | 2015-06-05 | [
[
"Modak",
"Sujoy Kumar",
""
],
[
"Singleton",
"Douglas",
""
]
] | We present a model for cosmological inflation which has a natural "turn on" and a natural "turn off" mechanism. In our model inflation is driven by the Hawking-like radiation that occurs in Friedman-Robertson-Walker (FRW) space-time. This Hawking-like radiation results in an effective negative pressure "fluid" which le... |
gr-qc/9905051 | Hans-Juergen Schmidt | Hans - Juergen Schmidt | The classical solutions of two-dimensional gravity | 11 pages, LaTeX, no figures, Gen.Rel.Grav. in print | Gen.Rel.Grav.31:1187-1210,1999 | 10.1023/A:1026708320831 | Preprint UNIPO-MATH-98-June-8 | gr-qc | null | The solutions of two-dimensional gravity following from a non-linear
Lagrangian L = f(R) are classified, and their symmetry and singularity
properties are described. Then a conformal transformation is applied to rewrite
these solutions as analogous solutions of two-dimensional Einstein-dilaton
gravity and vice versa.... | [
{
"created": "Sat, 15 May 1999 08:12:59 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Schmidt",
"Hans - Juergen",
""
]
] | The solutions of two-dimensional gravity following from a non-linear Lagrangian L = f(R) are classified, and their symmetry and singularity properties are described. Then a conformal transformation is applied to rewrite these solutions as analogous solutions of two-dimensional Einstein-dilaton gravity and vice versa. |
1911.01846 | Sergey S. Kokarev | Sergey S. Kokarev | Dynamic general covariance of physical systems | The matter of a talk, prepared for 3-d Russian conference
"Foundations of fundamental physics and mathematics" (29-30.11.2019) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One unusual property of dynamic systems, whose state is characterized by a
set of scalar dynamic variables satisfying a system of differential equations
of a general form, is considered. This property is related to the behavior of
equations (optionally covariant) with respect to coordinate diffeomorphisms:
the equati... | [
{
"created": "Sat, 2 Nov 2019 18:56:22 GMT",
"version": "v1"
}
] | 2019-11-06 | [
[
"Kokarev",
"Sergey S.",
""
]
] | One unusual property of dynamic systems, whose state is characterized by a set of scalar dynamic variables satisfying a system of differential equations of a general form, is considered. This property is related to the behavior of equations (optionally covariant) with respect to coordinate diffeomorphisms: the equation... |
2403.02089 | Guangzhou Guo | Guangzhou Guo, Peng Wang, and Yupeng Zhang | Nonlinear Stability of Black Holes with a Stable Light Ring | v1: 26 pages, 6 figures; v2: references added | null | null | CTP-SCU/2024002 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, ultracompact objects have been found to be susceptible to a new
nonlinear instability, known as the light-ring instability, triggered by stable
light rings. This discovery raises concerns about the viability of these
objects as alternatives to black holes. In this work, we investigate the
presence of the li... | [
{
"created": "Mon, 4 Mar 2024 14:45:55 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Mar 2024 08:36:24 GMT",
"version": "v2"
}
] | 2024-03-12 | [
[
"Guo",
"Guangzhou",
""
],
[
"Wang",
"Peng",
""
],
[
"Zhang",
"Yupeng",
""
]
] | Recently, ultracompact objects have been found to be susceptible to a new nonlinear instability, known as the light-ring instability, triggered by stable light rings. This discovery raises concerns about the viability of these objects as alternatives to black holes. In this work, we investigate the presence of the ligh... |
1801.03044 | Ben Kain | Ben Kain | Stability and Critical Behavior of Gravitational Monopoles | 16 pages, 10 figures | Phys. Rev. D 97, 024012 (2018) | 10.1103/PhysRevD.97.024012 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I dynamically evolve spherically symmetric spacetimes containing
gravitational 't Hooft-Polyakov monopoles and determine the stable end states
of the evolutions. I do so to study stability and critical behavior of the
well-known static gravitational monopole solutions. For the static solutions,
there exist regions of... | [
{
"created": "Tue, 9 Jan 2018 17:22:34 GMT",
"version": "v1"
}
] | 2018-02-14 | [
[
"Kain",
"Ben",
""
]
] | I dynamically evolve spherically symmetric spacetimes containing gravitational 't Hooft-Polyakov monopoles and determine the stable end states of the evolutions. I do so to study stability and critical behavior of the well-known static gravitational monopole solutions. For the static solutions, there exist regions of p... |
1905.00045 | Tommi Markkanen | Jos\'e Eliel Camargo-Molina, Tommi Markkanen and Pat Scott | Dark energy without fine tuning | v2: 13 pages, minor improvements, version accepted in JHEP | JHEP 1901 (2019) 044 | 10.1007/JHEP10(2019)044 | IMPERIAL/TP/2019/TM/04 | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a two-field model that realises inflation and the observed density
of dark energy today, whilst solving the fine-tuning problems inherent in
quintessence models. One field acts as the inflaton, generically driving the
other to a saddle-point of the potential, from which it acts as a quintessence
field foll... | [
{
"created": "Tue, 30 Apr 2019 18:06:40 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Sep 2019 18:09:52 GMT",
"version": "v2"
}
] | 2019-10-14 | [
[
"Camargo-Molina",
"José Eliel",
""
],
[
"Markkanen",
"Tommi",
""
],
[
"Scott",
"Pat",
""
]
] | We present a two-field model that realises inflation and the observed density of dark energy today, whilst solving the fine-tuning problems inherent in quintessence models. One field acts as the inflaton, generically driving the other to a saddle-point of the potential, from which it acts as a quintessence field follow... |
1309.0067 | Md. Rahman Atiqur | M. Ilias Hossain, M. Atiqur Rahman | Hawking radiation of Reissner-Nordstrom-de Sitter black hole by
Hamilton-Jacobi method | 10 pages | null | 10.1007/s10509-013-1505-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Refs. (M. Atiqur Rahman, M. Ilias Hossain (2012) Phys. Lett. B {\bf 712}
1), we have developed Hamilton-Jacobi method for dynamical spacetime and
discussed Hawking radiation of Schwarzschild-de Sitter black hole by massive
particle tunneling method. In this letter, we have investigated the hawking
purely thermal a... | [
{
"created": "Sat, 31 Aug 2013 05:37:10 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Hossain",
"M. Ilias",
""
],
[
"Rahman",
"M. Atiqur",
""
]
] | In Refs. (M. Atiqur Rahman, M. Ilias Hossain (2012) Phys. Lett. B {\bf 712} 1), we have developed Hamilton-Jacobi method for dynamical spacetime and discussed Hawking radiation of Schwarzschild-de Sitter black hole by massive particle tunneling method. In this letter, we have investigated the hawking purely thermal and... |
gr-qc/0309009 | Rafael Sorkin | Rafael D. Sorkin | Causal Sets: Discrete Gravity (Notes for the Valdivia Summer School) | plainTeX, 27 pages, no figures To appear in the proceedings of the
Valdivia Summer School, edited by A. Gomberoff and D. Marolf | null | null | SU-GP-2003/1-2 | gr-qc astro-ph hep-th | null | These are lecture notes on causal set theory prepared in Jan. 2002 for a
Summer School in Valdivia, Chile. In some places, they are more complete, in
others much less so, regrettably. An extensive set of references and a glossary
of terms can be found at the end of the notes.
| [
{
"created": "Mon, 1 Sep 2003 23:44:48 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sorkin",
"Rafael D.",
""
]
] | These are lecture notes on causal set theory prepared in Jan. 2002 for a Summer School in Valdivia, Chile. In some places, they are more complete, in others much less so, regrettably. An extensive set of references and a glossary of terms can be found at the end of the notes. |
2206.11932 | Ethan Payne | Ethan Payne, Sophie Hourihane, Jacob Golomb, Rhiannon Udall, Derek
Davis, Katerina Chatziioannou | The curious case of GW200129: interplay between spin-precession
inference and data-quality issues | 17 pages, 14 figures, 2 tables. Data release:
https://zenodo.org/record/7259655 | Phys. Rev. D 106, 104017 (2022) | 10.1103/PhysRevD.106.104017 | LIGO DCC: P2200185 | gr-qc astro-ph.HE astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Measurement of spin-precession in black hole binary mergers observed with
gravitational waves is an exciting milestone as it relates to both general
relativistic dynamics and astrophysical binary formation scenarios. In this
study, we revisit the evidence for spin-precession in GW200129 and localize its
origin to dat... | [
{
"created": "Thu, 23 Jun 2022 18:27:14 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Nov 2022 21:50:29 GMT",
"version": "v2"
}
] | 2022-11-23 | [
[
"Payne",
"Ethan",
""
],
[
"Hourihane",
"Sophie",
""
],
[
"Golomb",
"Jacob",
""
],
[
"Udall",
"Rhiannon",
""
],
[
"Davis",
"Derek",
""
],
[
"Chatziioannou",
"Katerina",
""
]
] | Measurement of spin-precession in black hole binary mergers observed with gravitational waves is an exciting milestone as it relates to both general relativistic dynamics and astrophysical binary formation scenarios. In this study, we revisit the evidence for spin-precession in GW200129 and localize its origin to data ... |
gr-qc/0612159 | A. Yu. Ignatiev | A. Yu. Ignatiev | Is violation of Newton's second law possible? | 10 pages; minor changes to match the published version | Phys.Rev.Lett.98:101101,2007 | 10.1103/PhysRevLett.98.101101 | null | gr-qc astro-ph | null | Astrophysical observations (usually explained by dark matter) suggest that
classical mechanics could break down when the acceleration becomes extremely
small (the approach known as modified Newtonian dynamics, or MOND). I present
the first analysis of MOND manifestations in terrestrial (rather than
astrophysical) set... | [
{
"created": "Mon, 25 Dec 2006 07:02:09 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Mar 2007 11:49:29 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Ignatiev",
"A. Yu.",
""
]
] | Astrophysical observations (usually explained by dark matter) suggest that classical mechanics could break down when the acceleration becomes extremely small (the approach known as modified Newtonian dynamics, or MOND). I present the first analysis of MOND manifestations in terrestrial (rather than astrophysical) setti... |
gr-qc/0606005 | Kayll Lake | Kayll Lake | Static Ricci-flat 5-manifolds admitting the 2-sphere | Generalize, in a straightforward way, to higher dimensions | Class.Quant.Grav. 23 (2006) 5871-5881 | 10.1088/0264-9381/23/20/009 | null | gr-qc hep-th | null | We examine, in a purely geometrical way, static Ricci-flat 5-manifolds
admitting the 2-sphere and an additional hypersurface-orthogonal Killing
vector. These are widely studied in the literature, from different physical
approaches, and known variously as the Kramer - Gross - Perry - Davidson - Owen
solutions. The 2-f... | [
{
"created": "Thu, 1 Jun 2006 18:10:15 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jun 2006 19:05:48 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Lake",
"Kayll",
""
]
] | We examine, in a purely geometrical way, static Ricci-flat 5-manifolds admitting the 2-sphere and an additional hypersurface-orthogonal Killing vector. These are widely studied in the literature, from different physical approaches, and known variously as the Kramer - Gross - Perry - Davidson - Owen solutions. The 2-fol... |
2210.11853 | Benjamin Koch | Pedro D. Alvarez, Benjamin Koch, Cristobal Laporte, and Angel Rincon | Cosmological constraints on scale-dependent cosmology | 18 pages, 12 figures, accepted for publication in Physics of the Dark
Universe | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper examines a cosmological model of scale-dependent gravity. The
gravitational action is taken to be the Einstein-Hilbert term supplemented with
a cosmological constant, where the couplings, $G_k$ and $\Lambda_k$, run with
the energy scale $k$. % Also, notice that, by construction, our formalism
recovers gene... | [
{
"created": "Fri, 21 Oct 2022 10:20:37 GMT",
"version": "v1"
},
{
"created": "Tue, 28 May 2024 08:53:26 GMT",
"version": "v2"
}
] | 2024-05-29 | [
[
"Alvarez",
"Pedro D.",
""
],
[
"Koch",
"Benjamin",
""
],
[
"Laporte",
"Cristobal",
""
],
[
"Rincon",
"Angel",
""
]
] | This paper examines a cosmological model of scale-dependent gravity. The gravitational action is taken to be the Einstein-Hilbert term supplemented with a cosmological constant, where the couplings, $G_k$ and $\Lambda_k$, run with the energy scale $k$. % Also, notice that, by construction, our formalism recovers genera... |
2009.05663 | Stanislav Komarov | Stanislav Komarov and Alexander Gorbatsievich | Reconstruction of a star motion in the vicinity of a Schwarzschild black
hole by redshift of the spectrum | 24 pages, 10 figures | null | null | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the time evolution of the redshift of the spectrum of
electromagnetic radiation that is emitted by the star that moves in the
vicinity of supermassive black hole. For the case of Schwarzschild black hole
we solve this problem exactly in General Theory of Relativity. Also we
formulate an approach that g... | [
{
"created": "Fri, 11 Sep 2020 21:24:16 GMT",
"version": "v1"
}
] | 2020-09-15 | [
[
"Komarov",
"Stanislav",
""
],
[
"Gorbatsievich",
"Alexander",
""
]
] | We investigate the time evolution of the redshift of the spectrum of electromagnetic radiation that is emitted by the star that moves in the vicinity of supermassive black hole. For the case of Schwarzschild black hole we solve this problem exactly in General Theory of Relativity. Also we formulate an approach that giv... |
1806.08087 | Bahram Mashhoon | Bahram Mashhoon | General Relativistic Gravity Gradiometry | 18 pages, invited contribution to appear in "Relativistic Geodesy:
Foundations and Applications", D. Puetzfeld et al. (eds.), 2018; v2: matches
version published in: D. Puetzfeld and C. L\"ammerzahl (eds.) "Relativistic
Geodesy" (Springer, Cham, 2019), pp. 143-157 | Fundamental Theories of Physics 196 (2019) 143-157 | 10.1007/978-3-030-11500-5_5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravity gradiometry within the framework of the general theory of relativity
involves the measurement of the elements of the relativistic tidal matrix,
which is theoretically obtained via the projection of the spacetime curvature
tensor upon the nonrotating orthonormal tetrad frame of a geodesic observer.
The behavio... | [
{
"created": "Thu, 21 Jun 2018 07:07:40 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Feb 2019 20:41:24 GMT",
"version": "v2"
}
] | 2020-07-29 | [
[
"Mashhoon",
"Bahram",
""
]
] | Gravity gradiometry within the framework of the general theory of relativity involves the measurement of the elements of the relativistic tidal matrix, which is theoretically obtained via the projection of the spacetime curvature tensor upon the nonrotating orthonormal tetrad frame of a geodesic observer. The behavior ... |
1006.4587 | Sabine Hossenfelder | Sabine Hossenfelder | Reply to arXiv:1006.2126 by Giovanni Amelino-Camelia et al | Update in reply to update of arXiv:1006.2126 | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was previously shown that models with deformations of special relativity
that have an energy-dependent yet observer-independent speed of light suffer
from nonlocal effects that are in conflict with observation to very high
precision. In a recent preprint it has been claimed that this conclusion is
false. This clai... | [
{
"created": "Wed, 23 Jun 2010 16:47:47 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Jul 2010 05:29:24 GMT",
"version": "v2"
}
] | 2010-07-08 | [
[
"Hossenfelder",
"Sabine",
""
]
] | It was previously shown that models with deformations of special relativity that have an energy-dependent yet observer-independent speed of light suffer from nonlocal effects that are in conflict with observation to very high precision. In a recent preprint it has been claimed that this conclusion is false. This claim ... |
gr-qc/0005069 | Alicia M. Sintes | J. Carot, A.M. Sintes | Self-similar static solutions admitting a two-space of constant
curvature | 6 pages | Class.Quant.Grav.11:L125-L128,1994 | 10.1088/0264-9381/11/11/001 | null | gr-qc | null | A recent result by Haggag and Hajj-Boutros is reviewed within the framework
of self-similar space-times, extending, in some sense, their results and
presenting a family of metrics consisting of all the static spherically
symmetric perfect fluid solutions admitting a homothety.
| [
{
"created": "Tue, 16 May 2000 15:41:41 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Carot",
"J.",
""
],
[
"Sintes",
"A. M.",
""
]
] | A recent result by Haggag and Hajj-Boutros is reviewed within the framework of self-similar space-times, extending, in some sense, their results and presenting a family of metrics consisting of all the static spherically symmetric perfect fluid solutions admitting a homothety. |
2404.13643 | Pramit Rej | Pramit Rej and Akashdip Karmakar | Well behaved class of Heintzmann's solution within $f(R,\,T)$ framework | 19 Pages. 10 Figures, 4 tables (Accepted for publication in The
European Physical Journal Plus on 23.07.2024) | The European Physical Journal Plus 139 (8), 686 (2024) | 10.1140/epjp/s13360-024-05487-3 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The primary objective of this paper is to develop a well-behaved class of
Heintzmann IIa [{\em H. Heintzmann, Z. Physik 228, 489-493 (1969)}] solution in
the context of $f(R,\, T)$ gravity. In the $f(R, T)$ framework, the
gravitational action includes both the Ricci scalar ($R$) and the trace of the
energy-momentum t... | [
{
"created": "Sun, 21 Apr 2024 12:40:18 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Jul 2024 02:53:50 GMT",
"version": "v2"
}
] | 2024-08-06 | [
[
"Rej",
"Pramit",
""
],
[
"Karmakar",
"Akashdip",
""
]
] | The primary objective of this paper is to develop a well-behaved class of Heintzmann IIa [{\em H. Heintzmann, Z. Physik 228, 489-493 (1969)}] solution in the context of $f(R,\, T)$ gravity. In the $f(R, T)$ framework, the gravitational action includes both the Ricci scalar ($R$) and the trace of the energy-momentum ten... |
2307.11303 | Naoki Tsukamoto | Naoki Tsukamoto | Comment on "Horizon-scale tests of gravity theories and fundamental
physics from the Event Horizon Telescope image of Sagittarius A*" | 3 pages, no figure, minor changes, accepted for publication in
Classical and Quantum Gravity | Class. Quantum Grav. 40, 228001(2023) | 10.1088/1361-6382/acfb6e | null | gr-qc astro-ph.HE hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | Vagnozzi et al. constrained the additional parameter of spacetimes with a
photon sphere from the observation of the shadow of Sagittarius A* under the
assumption that a distance to the Sagittarius A* and its mass parameter was
estimated from other observations. They claimed that a Damour-Solodukhin
wormhole with an a... | [
{
"created": "Fri, 21 Jul 2023 02:22:50 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Jul 2023 06:53:47 GMT",
"version": "v2"
},
{
"created": "Tue, 19 Sep 2023 13:23:19 GMT",
"version": "v3"
}
] | 2023-10-19 | [
[
"Tsukamoto",
"Naoki",
""
]
] | Vagnozzi et al. constrained the additional parameter of spacetimes with a photon sphere from the observation of the shadow of Sagittarius A* under the assumption that a distance to the Sagittarius A* and its mass parameter was estimated from other observations. They claimed that a Damour-Solodukhin wormhole with an add... |
1512.05329 | Dra\v{z}en Glavan | Dra\v{z}en Glavan, Tomislav Prokopec, Tomo Takahashi | Late-time quantum backreaction of a very light nonminimally coupled
scalar | 66 pages, 6 figures | Phys. Rev. D 94, 084053 (2016) | 10.1103/PhysRevD.94.084053 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the backreaction of the quantum fluctuations of a very light
($m \!\lesssim\! H_{\text{today}}$) nonminimally coupled spectator scalar field
on the expansion dynamics of the Universe. The one-loop expectation value of
the energy momentum tensor of these fluctuations, as a measure of the
backreaction, i... | [
{
"created": "Wed, 16 Dec 2015 20:52:33 GMT",
"version": "v1"
}
] | 2016-11-02 | [
[
"Glavan",
"Dražen",
""
],
[
"Prokopec",
"Tomislav",
""
],
[
"Takahashi",
"Tomo",
""
]
] | We investigate the backreaction of the quantum fluctuations of a very light ($m \!\lesssim\! H_{\text{today}}$) nonminimally coupled spectator scalar field on the expansion dynamics of the Universe. The one-loop expectation value of the energy momentum tensor of these fluctuations, as a measure of the backreaction, is ... |
1206.2591 | Muhammad Sharif | M. Sharif and Wajiha Javed | Fermions Tunneling from Charged Accelerating and Rotating Black Holes
with NUT Parameter | 21 pages, no figure | Eur. Phys. J. C 72(2012)1997 | 10.1140/epjc/s10052-012-1997-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is devoted to the study of Hawking radiation as a tunneling of
charged fermions through event horizons of a pair of charged accelerating and
rotating black holes with NUT parameter. We evaluate tunneling probabilities of
outgoing charged particles by using the semiclassical WKB approximation to the
general... | [
{
"created": "Wed, 16 May 2012 02:02:18 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Sharif",
"M.",
""
],
[
"Javed",
"Wajiha",
""
]
] | This paper is devoted to the study of Hawking radiation as a tunneling of charged fermions through event horizons of a pair of charged accelerating and rotating black holes with NUT parameter. We evaluate tunneling probabilities of outgoing charged particles by using the semiclassical WKB approximation to the general c... |
1912.12465 | Antonio Enea Romano | Brayan Yamid Del Valle Mazo, Antonio Enea Romano, Maryi Alejandra
Carvajal Quintero | Combining gravitational and electromagnetic waves observations to
investigate local structure and the Hubble tension | revised version for JCAP resubmission | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent estimations of the Hubble parameter $H_0$ based on gravitational waves
(GW) observations can be used to shed some light on the discrepancy between the
value of the Hubble parameter $H_0^P$ obtained from large scale observations
such as the Planck mission, and the small scale value $H_0^R$, obtained from
low re... | [
{
"created": "Sat, 28 Dec 2019 14:46:52 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Mar 2020 13:45:46 GMT",
"version": "v2"
},
{
"created": "Tue, 15 Dec 2020 20:09:56 GMT",
"version": "v3"
},
{
"created": "Sun, 20 Jun 2021 16:20:51 GMT",
"version": "v4"
}
] | 2021-06-22 | [
[
"Mazo",
"Brayan Yamid Del Valle",
""
],
[
"Romano",
"Antonio Enea",
""
],
[
"Quintero",
"Maryi Alejandra Carvajal",
""
]
] | Recent estimations of the Hubble parameter $H_0$ based on gravitational waves (GW) observations can be used to shed some light on the discrepancy between the value of the Hubble parameter $H_0^P$ obtained from large scale observations such as the Planck mission, and the small scale value $H_0^R$, obtained from low reds... |
gr-qc/9408023 | Albrecht | Andreas Albrecht | The Theory of Everything vs the Theory of Anything | 13 pages plain LaTeX, no figures. To appear in the proceedings of
``The Birth of the Universe and Fundamental Forces'', Rome, May 1994, F.
Occhionero Editor, Springer Verlag. Imperial/TP/93-94/56 REVISED 10/94: Minor
improvements, more referneces, no major changes | Lect.Notes Phys.455:323-332,1995 | 10.1007/3-540-60024-8_126 | null | gr-qc astro-ph hep-th | null | To what extent can our limited set of observations be used to pin down the
specifics of a ``Theory of Everything''? In the limit where the links are
arbitrarily tenuous, a ``Theory of Everything'' might become a ``Theory of
Anything''. A clear understanding of what we can and can not expect to learn
about the univers... | [
{
"created": "Thu, 18 Aug 1994 08:03:40 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Nov 1994 19:34:00 GMT",
"version": "v2"
}
] | 2018-05-02 | [
[
"Albrecht",
"Andreas",
""
]
] | To what extent can our limited set of observations be used to pin down the specifics of a ``Theory of Everything''? In the limit where the links are arbitrarily tenuous, a ``Theory of Everything'' might become a ``Theory of Anything''. A clear understanding of what we can and can not expect to learn about the universe ... |
1010.5149 | Lorenzo Sindoni | Daniele Oriti and Lorenzo Sindoni | Towards classical geometrodynamics from Group Field Theory hydrodynamics | revtex4, 32 pages. Contribution submitted to the focus issue of the
New Journal of Physics on "Classical and Quantum Analogues for Gravitational
Phenomena and Related Effects", R. Schuetzhold, U. Leonhardt and C. Maia,
Eds; v2: typos corrected, references updated, to match the published version | New J.Phys.13:025006,2011 | 10.1088/1367-2630/13/2/025006 | AEI-2010-157 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We take the first steps towards identifying the hydrodynamics of group field
theories (GFTs) and relating this hydrodynamic regime to classical
geometrodynamics of continuum space. We apply to GFT mean field theory
techniques borrowed from the theory of Bose condensates, alongside standard GFT
and spin foam technique... | [
{
"created": "Mon, 25 Oct 2010 14:49:18 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Feb 2011 11:35:09 GMT",
"version": "v2"
}
] | 2011-02-18 | [
[
"Oriti",
"Daniele",
""
],
[
"Sindoni",
"Lorenzo",
""
]
] | We take the first steps towards identifying the hydrodynamics of group field theories (GFTs) and relating this hydrodynamic regime to classical geometrodynamics of continuum space. We apply to GFT mean field theory techniques borrowed from the theory of Bose condensates, alongside standard GFT and spin foam techniques.... |
gr-qc/0606020 | Thomas Buchert | Thomas Buchert (Univ. Bielefeld & ASC Munich, Germany), Julien Larena
and Jean-Michel Alimi (LUTH, Obs. de Paris--Meudon, France) | Correspondence between kinematical backreaction and scalar field
cosmologies - the `morphon field' | 36 pages and 6 Figures, matches published version in Class.Quant.Grav | Class.Quant.Grav.23:6379-6408,2006 | 10.1088/0264-9381/23/22/018 | null | gr-qc astro-ph hep-th | null | Spatially averaged inhomogeneous cosmologies in classical general relativity
can be written in the form of effective Friedmann equations with sources that
include backreaction terms. In this paper we propose to describe these
backreaction terms with the help of a homogeneous scalar field evolving in a
potential; we c... | [
{
"created": "Sat, 3 Jun 2006 15:13:26 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Sep 2006 09:59:38 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Buchert",
"Thomas",
"",
"Univ. Bielefeld & ASC Munich, Germany"
],
[
"Larena",
"Julien",
"",
"LUTH, Obs. de Paris--Meudon, France"
],
[
"Alimi",
"Jean-Michel",
"",
"LUTH, Obs. de Paris--Meudon, France"
]
] | Spatially averaged inhomogeneous cosmologies in classical general relativity can be written in the form of effective Friedmann equations with sources that include backreaction terms. In this paper we propose to describe these backreaction terms with the help of a homogeneous scalar field evolving in a potential; we cal... |
0908.0379 | Jozef Skakala | Jozef Skakala (Victoria University of Wellington) | New ideas about multiplication of tensorial distributions | 37 pages | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There is a need in general relativity for a consistent and useful
mathematical theory defining the multiplication of tensor distributions in a
geometric (diffeomorphism invariant) way. Significant progress has been made
through the concept of Colombeau algebras, and the construction of full
Colombeau algebras on diff... | [
{
"created": "Tue, 4 Aug 2009 03:15:18 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Mar 2010 04:11:00 GMT",
"version": "v2"
},
{
"created": "Tue, 7 Dec 2010 03:14:57 GMT",
"version": "v3"
},
{
"created": "Thu, 21 Apr 2011 05:00:14 GMT",
"version": "v4"
},
{
"crea... | 2011-12-12 | [
[
"Skakala",
"Jozef",
"",
"Victoria University of Wellington"
]
] | There is a need in general relativity for a consistent and useful mathematical theory defining the multiplication of tensor distributions in a geometric (diffeomorphism invariant) way. Significant progress has been made through the concept of Colombeau algebras, and the construction of full Colombeau algebras on differ... |
gr-qc/0511102 | D. Petroff | David Petroff, Marcus Ansorg | The Extreme Distortion of Black Holes due to Matter | 3 pages, 2 figures, v2: minor changes, one reference added | null | null | null | gr-qc | null | A highly accurate computer program is used to study axially symmetric and
stationary spacetimes containing a Black Hole surrounded by a ring of matter.
It is shown that the matter ring affects the properties of the Black Hole
drastically. In particular, the absolute value of the ratio of the Black Hole's
angular mome... | [
{
"created": "Thu, 17 Nov 2005 14:16:40 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Nov 2005 15:06:05 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Petroff",
"David",
""
],
[
"Ansorg",
"Marcus",
""
]
] | A highly accurate computer program is used to study axially symmetric and stationary spacetimes containing a Black Hole surrounded by a ring of matter. It is shown that the matter ring affects the properties of the Black Hole drastically. In particular, the absolute value of the ratio of the Black Hole's angular moment... |
1506.03492 | Davide Gerosa | Davide Gerosa, Michael Kesden, Ulrich Sperhake, Emanuele Berti,
Richard O'Shaughnessy | Multi-timescale analysis of phase transitions in precessing black-hole
binaries | Accepted for publication in PRD. Animations available at
http://davidegerosa.com/spinprecession/ | Phys. Rev. D 92, 064016 (2015) | 10.1103/PhysRevD.92.064016 | null | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dynamics of precessing binary black holes (BBHs) in the post-Newtonian
regime has a strong timescale hierarchy: the orbital timescale is very short
compared to the spin-precession timescale which, in turn, is much shorter than
the radiation-reaction timescale on which the orbit is shrinking due to
gravitational-w... | [
{
"created": "Wed, 10 Jun 2015 21:45:08 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Sep 2015 16:19:33 GMT",
"version": "v2"
}
] | 2015-09-16 | [
[
"Gerosa",
"Davide",
""
],
[
"Kesden",
"Michael",
""
],
[
"Sperhake",
"Ulrich",
""
],
[
"Berti",
"Emanuele",
""
],
[
"O'Shaughnessy",
"Richard",
""
]
] | The dynamics of precessing binary black holes (BBHs) in the post-Newtonian regime has a strong timescale hierarchy: the orbital timescale is very short compared to the spin-precession timescale which, in turn, is much shorter than the radiation-reaction timescale on which the orbit is shrinking due to gravitational-wav... |
1907.08681 | Sofie Marie Koksbang | S. M. Koksbang | Towards statistically homogeneous and isotropic perfect fluid universes
with cosmic backreaction | 35 pages, 10 captioned figures. Submitted for publication. v2: Typo
in eq. 1 corrected and text added to explain figure. No changes to results.
Matches publishd version | Class. Quantum Grav. 36 185004, 2019 | 10.1088/1361-6382/ab376c | HIP-2019-25/TH | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A method for constructing statistically homogeneous and isotropic perfect
fluid universe models with significant cosmic backreaction is proposed. The
method is illustrated using a simplified model constructed as a Swiss-cheese
model with Lemaitre-Tolman-Bondi structures. The model exhibits significant
cosmic backreac... | [
{
"created": "Thu, 18 Jul 2019 11:24:52 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Aug 2019 07:38:43 GMT",
"version": "v2"
}
] | 2019-08-22 | [
[
"Koksbang",
"S. M.",
""
]
] | A method for constructing statistically homogeneous and isotropic perfect fluid universe models with significant cosmic backreaction is proposed. The method is illustrated using a simplified model constructed as a Swiss-cheese model with Lemaitre-Tolman-Bondi structures. The model exhibits significant cosmic backreacti... |
1712.09554 | Indrani Banerjee | Indrani Banerjee, Bhaswati Mandal and Soumitra SenGupta | In quest of axionic hairs in quasars | v2, Revised, accepted for publication in JCAP, 19 pages, 3 figures | null | 10.1088/1475-7516/2018/03/039 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The presence of axionic field can provide plausible explanation to several
long standing problems in physics such as dark matter and dark energy. The
pseudo-scalar axion whose derivative corresponds to the Hodge dual of the
Kalb-Ramond field strength in four dimensions plays crucial roles in explaining
several astrop... | [
{
"created": "Wed, 27 Dec 2017 11:31:50 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Feb 2018 07:50:50 GMT",
"version": "v2"
},
{
"created": "Fri, 16 Mar 2018 05:11:57 GMT",
"version": "v3"
}
] | 2018-04-11 | [
[
"Banerjee",
"Indrani",
""
],
[
"Mandal",
"Bhaswati",
""
],
[
"SenGupta",
"Soumitra",
""
]
] | The presence of axionic field can provide plausible explanation to several long standing problems in physics such as dark matter and dark energy. The pseudo-scalar axion whose derivative corresponds to the Hodge dual of the Kalb-Ramond field strength in four dimensions plays crucial roles in explaining several astrophy... |
gr-qc/0607065 | Lars Andersson | Lars Andersson (UM and AEI) | On the relation between mathematical and numerical relativity | 12 pages | Class.Quant.Grav.23:S307-S318,2006 | 10.1088/0264-9381/23/16/S02 | AEI-2006-055 | gr-qc | null | The large scale binary black hole effort in numerical relativity has led to
an increasing distinction between numerical and mathematical relativity. This
note discusses this situation and gives some examples of succesful interactions
between numerical and mathematical methods is general relativity.
| [
{
"created": "Mon, 17 Jul 2006 18:17:47 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Andersson",
"Lars",
"",
"UM and AEI"
]
] | The large scale binary black hole effort in numerical relativity has led to an increasing distinction between numerical and mathematical relativity. This note discusses this situation and gives some examples of succesful interactions between numerical and mathematical methods is general relativity. |
2303.05430 | Giampiero Esposito Dr. | Giampiero Esposito | DeWitt boundary condition in one-loop quantum cosmology | In the final version, the presentation has been improved | null | 10.3390/universe9040187 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | DeWitt's suggestion that the wave function of the universe should vanish at
the classical big-bang singularity is here considered within the framework of
one-loop quantum cosmology. For pure gravity at one loop about a flat
four-dimensional background bounded by a 3-sphere, three choices of boundary
conditions are co... | [
{
"created": "Thu, 9 Mar 2023 17:22:17 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Apr 2023 15:04:41 GMT",
"version": "v2"
}
] | 2023-04-18 | [
[
"Esposito",
"Giampiero",
""
]
] | DeWitt's suggestion that the wave function of the universe should vanish at the classical big-bang singularity is here considered within the framework of one-loop quantum cosmology. For pure gravity at one loop about a flat four-dimensional background bounded by a 3-sphere, three choices of boundary conditions are cons... |
2103.11708 | David Senjaya | David Senjaya | Canonical Quantization of Static and Rotating Black Hole as A
Gravitational Atom | Cancelled for publication | null | null | null | gr-qc hep-th | http://creativecommons.org/publicdomain/zero/1.0/ | Gravitational field is usually neglected in calculation of atomic energy
levels as its effect is much weaker than the electromagnetic field, but that is
not the case for a particle orbiting a black hole. In this work, canonical
quantization of a particle under a gravitational field exerted by this tiny but
very massi... | [
{
"created": "Mon, 22 Mar 2021 10:25:34 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Sep 2023 10:30:09 GMT",
"version": "v2"
}
] | 2023-09-12 | [
[
"Senjaya",
"David",
""
]
] | Gravitational field is usually neglected in calculation of atomic energy levels as its effect is much weaker than the electromagnetic field, but that is not the case for a particle orbiting a black hole. In this work, canonical quantization of a particle under a gravitational field exerted by this tiny but very massive... |
2404.17846 | Zeeshan Gul | M. Zeeshan Gul and M. Sharif | Spherically Symmetric Wormhole Solutions admitting Karmarkar Condition | 31 pages, 26 figures | Phys. Scr. 99(2024)055036 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper investigated the viable traversable wormhole solutions through
Karmarkar condition in the context of $f(\mathcal{G},T)$ theory. A static
spherical spacetime with anisotropic matter configuration is used to study the
wormhole geometry. Karmarkar condition is used to develop a viable shape
function for a sta... | [
{
"created": "Sat, 27 Apr 2024 09:48:34 GMT",
"version": "v1"
}
] | 2024-04-30 | [
[
"Gul",
"M. Zeeshan",
""
],
[
"Sharif",
"M.",
""
]
] | This paper investigated the viable traversable wormhole solutions through Karmarkar condition in the context of $f(\mathcal{G},T)$ theory. A static spherical spacetime with anisotropic matter configuration is used to study the wormhole geometry. Karmarkar condition is used to develop a viable shape function for a stati... |
0705.3340 | Stefan Hollands | Stefan Hollands | Renormalized Quantum Yang-Mills Fields in Curved Spacetime | Latex 144pp, no figures, review style presentation; v2: equations
corrected, details in proof of Ward-identity added, discussion of state
space, refs. added; v3: typos corrected, details added in renormalization
section, one subsection removed; v4 BRST-invariant state, typos corrected,
background field discussi... | Rev.Math.Phys.20:1033-1172,2008 | 10.1142/S0129055X08003420 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a proof that quantum Yang-Mills theory can be consistently defined
as a renormalized, perturbative quantum field theory on an arbitrary globally
hyperbolic curved, Lorentzian spacetime. To this end, we construct the
non-commutative algebra of observables, in the sense of formal power series, as
well as a s... | [
{
"created": "Wed, 23 May 2007 11:33:38 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Jun 2007 13:03:52 GMT",
"version": "v2"
},
{
"created": "Thu, 28 Feb 2008 16:27:04 GMT",
"version": "v3"
},
{
"created": "Wed, 14 Mar 2018 07:47:21 GMT",
"version": "v4"
}
] | 2018-03-15 | [
[
"Hollands",
"Stefan",
""
]
] | We present a proof that quantum Yang-Mills theory can be consistently defined as a renormalized, perturbative quantum field theory on an arbitrary globally hyperbolic curved, Lorentzian spacetime. To this end, we construct the non-commutative algebra of observables, in the sense of formal power series, as well as a spa... |
gr-qc/0504115 | Alan Coley | A.A. Coley, N. Pelavas and R.M. Zalaletdinov | Cosmological Solutions in Macroscopic Gravity | 5 pages | Phys.Rev.Lett. 95 (2005) 151102 | 10.1103/PhysRevLett.95.151102 | null | gr-qc astro-ph | null | In the macroscopic gravity approach to the averaging problem in cosmology,
the Einstein field equations on cosmological scales are modified by appropriate
gravitational correlation terms. We present exact cosmological solutions to the
equations of macroscopic gravity for a spatially homogeneous and isotropic
macrosco... | [
{
"created": "Sat, 23 Apr 2005 18:11:53 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Oct 2005 17:19:49 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Coley",
"A. A.",
""
],
[
"Pelavas",
"N.",
""
],
[
"Zalaletdinov",
"R. M.",
""
]
] | In the macroscopic gravity approach to the averaging problem in cosmology, the Einstein field equations on cosmological scales are modified by appropriate gravitational correlation terms. We present exact cosmological solutions to the equations of macroscopic gravity for a spatially homogeneous and isotropic macroscopi... |
gr-qc/0605024 | Lars Samuelsson | Brandon Carter and Lars Samuelsson | Relativistic mechanics of neutron superfluid in (magneto) elastic star
crust | 29 pages, Latex. V. 2. Minor changes, matches published version | Class.Quant.Grav. 23 (2006) 5367-5388 | 10.1088/0264-9381/23/17/015 | null | gr-qc astro-ph | null | At densities below the neutron drip threshold, a purely elastic solid model
(including, if necessary, a frozen-in magnetic field) can provide an adequate
description of a neutron star crust, but at higher densities it will be
necessary to allow for the penetration of the solid lattice by an independently
moving curre... | [
{
"created": "Wed, 3 May 2006 22:31:49 GMT",
"version": "v1"
},
{
"created": "Sat, 19 Aug 2006 16:30:26 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Carter",
"Brandon",
""
],
[
"Samuelsson",
"Lars",
""
]
] | At densities below the neutron drip threshold, a purely elastic solid model (including, if necessary, a frozen-in magnetic field) can provide an adequate description of a neutron star crust, but at higher densities it will be necessary to allow for the penetration of the solid lattice by an independently moving current... |
2310.04759 | Sohan Kumar Jha | Sohan Kumar Jha | Shadow, quasinormal modes, greybody bounds, and Hawking sparsity of Loop
Quantum Gravity motivated non-rotating black hole | Accepted for publication in Eur.Phy.Jour.C | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We consider Loop Quantum Gravity(LQG) motivated $4D$ polymerized black hole
and study shadow, quasinormal modes, and Hawking radiation. We obtain
analytical expressions of photonsphere radius and shadow radius and study their
qualitative and quantitative nature of variation with respect to the LQG
parameter $\alpha$.... | [
{
"created": "Sat, 7 Oct 2023 09:42:28 GMT",
"version": "v1"
}
] | 2023-10-10 | [
[
"Jha",
"Sohan Kumar",
""
]
] | We consider Loop Quantum Gravity(LQG) motivated $4D$ polymerized black hole and study shadow, quasinormal modes, and Hawking radiation. We obtain analytical expressions of photonsphere radius and shadow radius and study their qualitative and quantitative nature of variation with respect to the LQG parameter $\alpha$. W... |
1802.09107 | W. G. Unruh | William G Unruh | Prehawking radiation | 4pp, 1figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the 2-D quantum energy momentum tensor expectation value near a black
hole, the value near a collapsing shell which stops collapsing just outside the
putative horizon is calculated and shown not to have any evidence of preHawking
radiation.
| [
{
"created": "Sun, 25 Feb 2018 23:50:27 GMT",
"version": "v1"
}
] | 2018-02-27 | [
[
"Unruh",
"William G",
""
]
] | Using the 2-D quantum energy momentum tensor expectation value near a black hole, the value near a collapsing shell which stops collapsing just outside the putative horizon is calculated and shown not to have any evidence of preHawking radiation. |
gr-qc/0605082 | Roman Konoplya | R. A. Konoplya, A. Zhidenko | Perturbations and quasi-normal modes of black holes in Einstein-Aether
theory | 6 pages, 3 figures, RevTex, to be published in Phys. Lett. B | Phys.Lett. B644 (2007) 186-191 | 10.1016/j.physletb.2006.11.036 | null | gr-qc | null | We develop a new method for calculation of quasi-normal modes of black holes,
when the effective potential, which governs black hole perturbations, is known
only numerically in some region near the black hole. This method can be applied
to perturbations of a wide class of numerical black hole solutions. We apply it
t... | [
{
"created": "Fri, 12 May 2006 22:22:19 GMT",
"version": "v1"
},
{
"created": "Sun, 9 Jul 2006 13:02:00 GMT",
"version": "v2"
},
{
"created": "Tue, 29 Aug 2006 21:40:30 GMT",
"version": "v3"
},
{
"created": "Wed, 25 Oct 2006 14:21:54 GMT",
"version": "v4"
},
{
"cr... | 2009-11-11 | [
[
"Konoplya",
"R. A.",
""
],
[
"Zhidenko",
"A.",
""
]
] | We develop a new method for calculation of quasi-normal modes of black holes, when the effective potential, which governs black hole perturbations, is known only numerically in some region near the black hole. This method can be applied to perturbations of a wide class of numerical black hole solutions. We apply it to ... |
1004.1790 | Olga Babourova Valer'evna | Olga V. Babourova, Boris N. Frolov | Interaction of the 4-rotational gauge field with orbital momentum,
gravidiamagnetic effect, and orbit experiment "Gravity Probe B" | 4 pages, 0 figures Some missprints in the text were corrected | Phys.Rev.D82:027503,2010 | 10.1103/PhysRevD.82.027503 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The direct interaction of the 4-rotational (Lorentzian) gauge field with the
angular orbital momentum of an external field is considered. This interaction
appears in a new Poincar\'{e} gauge theory of gravitation, in which tetrads are
not true gauge fields, but represent some functions of the translational and
4-rota... | [
{
"created": "Sun, 11 Apr 2010 11:09:11 GMT",
"version": "v1"
},
{
"created": "Sat, 26 Jun 2010 12:38:50 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Babourova",
"Olga V.",
""
],
[
"Frolov",
"Boris N.",
""
]
] | The direct interaction of the 4-rotational (Lorentzian) gauge field with the angular orbital momentum of an external field is considered. This interaction appears in a new Poincar\'{e} gauge theory of gravitation, in which tetrads are not true gauge fields, but represent some functions of the translational and 4-rotati... |
1308.0018 | Sam Dolan Dr | Caio F. B. Macedo, Luiz C. S. Leite, Ednilton S. Oliveira, Sam R.
Dolan, Lu\'is C. B. Crispino | Absorption of planar massless scalar waves by Kerr black holes | 11 pages, 10 figures | null | 10.1103/PhysRevD.88.064033 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider planar massless scalar waves impinging upon a Kerr black hole,
for general angles of incidence. We compute the absorption cross section via
the partial wave approach, and present a gallery of results. In the
low-frequency regime, we show that the cross section approaches the horizon
area; in the high-freq... | [
{
"created": "Wed, 31 Jul 2013 20:01:02 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Macedo",
"Caio F. B.",
""
],
[
"Leite",
"Luiz C. S.",
""
],
[
"Oliveira",
"Ednilton S.",
""
],
[
"Dolan",
"Sam R.",
""
],
[
"Crispino",
"Luís C. B.",
""
]
] | We consider planar massless scalar waves impinging upon a Kerr black hole, for general angles of incidence. We compute the absorption cross section via the partial wave approach, and present a gallery of results. In the low-frequency regime, we show that the cross section approaches the horizon area; in the high-freque... |
1002.0538 | Albert V. Minkevich | A. V. Minkevich | De Sitter spacetime with torsion as physical spacetime in the vacuum | 8 pages | Modern Physics Letters A, vol.26, No. 4 (2011) 259-266 | 10.1142/S0217732311034797 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Homogeneous isotropic models built in the framework of the Poincar\'e gauge
theory of gravity (PGTG) based on general expression of gravitational
Lagrangian without cosmological constant are analyzed. It is shown that the
physical spacetime in the vacuum in the frame of PGTG can have the structure of
flat de Sitter s... | [
{
"created": "Tue, 2 Feb 2010 17:03:36 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Feb 2011 08:21:19 GMT",
"version": "v2"
}
] | 2015-05-18 | [
[
"Minkevich",
"A. V.",
""
]
] | Homogeneous isotropic models built in the framework of the Poincar\'e gauge theory of gravity (PGTG) based on general expression of gravitational Lagrangian without cosmological constant are analyzed. It is shown that the physical spacetime in the vacuum in the frame of PGTG can have the structure of flat de Sitter spa... |
1507.08419 | Avisa Behboodi | A. Behboodi, S. Akhshabi, K. Nozari | Scalar perturbation potentials in a homogeneous and isotropic
Weitzenb\"ock geometry | 16 pages, 6 figures | null | 10.1142/S0218271816500875 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe the fully gauge invariant cosmological perturbation equations in
teleparallel gravity by using the gauge covariant version of the Stewart lemma
for obtaining the variations in tetrad perturbations. In teleparallel theory,
perturbations are the result of small fluctuations in the tetrad field. The
tetrad t... | [
{
"created": "Thu, 30 Jul 2015 08:47:06 GMT",
"version": "v1"
},
{
"created": "Sun, 20 Dec 2015 13:23:08 GMT",
"version": "v2"
},
{
"created": "Mon, 30 May 2016 18:24:16 GMT",
"version": "v3"
}
] | 2016-05-31 | [
[
"Behboodi",
"A.",
""
],
[
"Akhshabi",
"S.",
""
],
[
"Nozari",
"K.",
""
]
] | We describe the fully gauge invariant cosmological perturbation equations in teleparallel gravity by using the gauge covariant version of the Stewart lemma for obtaining the variations in tetrad perturbations. In teleparallel theory, perturbations are the result of small fluctuations in the tetrad field. The tetrad tra... |
gr-qc/0107025 | Hector Hernandez | H. Hernandez, L.A. Nunez | Nonlocal Equation of State in Anisotropic Static Fluid Spheres in
General Relativity | 21 pages, 1 figure, minor changes in the text, references added, two
new solutions studied | Can.J.Phys. 82 (2004) 29-51 | 10.1139/p03-124 | null | gr-qc | null | We show that it is possible to obtain credible static anisotropic spherically
symmetric matter configurations starting from known density profiles and
satisfying a nonlocal equation of state. These particular types of equation of
state describe, at a given point, the components of the corresponding
energy-momentum te... | [
{
"created": "Fri, 6 Jul 2001 16:33:21 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Apr 2002 15:48:27 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Hernandez",
"H.",
""
],
[
"Nunez",
"L. A.",
""
]
] | We show that it is possible to obtain credible static anisotropic spherically symmetric matter configurations starting from known density profiles and satisfying a nonlocal equation of state. These particular types of equation of state describe, at a given point, the components of the corresponding energy-momentum tens... |
2309.02658 | Manuel Rodrigues | Ednaldo L. B. Junior, Francisco S. N. Lobo, Manuel E. Rodrigues and
Henrique A. Vieira | Gravitational lens effect of a holonomy corrected Schwarzschild black
hole | 26 pages, 17 figures | Phys.Rev.D 109 (2024) 2, 024004 | 10.1103/PhysRevD.109.024004 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the gravitational lensing effect for the Schwarzschild
solution with holonomy corrections. We use two types of approximation methods
to calculate the deflection angle, namely the weak and strong field limits. For
the first method, we calculate the deflection angle up to the fifth order of
appro... | [
{
"created": "Wed, 6 Sep 2023 02:07:06 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jan 2024 15:53:18 GMT",
"version": "v2"
}
] | 2024-01-10 | [
[
"Junior",
"Ednaldo L. B.",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Rodrigues",
"Manuel E.",
""
],
[
"Vieira",
"Henrique A.",
""
]
] | In this paper we study the gravitational lensing effect for the Schwarzschild solution with holonomy corrections. We use two types of approximation methods to calculate the deflection angle, namely the weak and strong field limits. For the first method, we calculate the deflection angle up to the fifth order of approxi... |
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