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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/9909047 | Tatyana P. Shestakova | V. A. Savchenko, T. P. Shestakova, G. M. Vereshkov | Quantum geometrodynamics of the Bianchi IX model in extended phase space | LaTeX, 18 pages, to be published in Int. J. Mod. Phys. A | Int.J.Mod.Phys. A14 (1999) 4473-4490 | 10.1142/S0217751X99002098 | null | gr-qc | null | A way of constructing mathematically correct quantum geometrodynamics of a
closed universe is presented. The resulting theory appears to be
gauge-noninvariant and thus consistent with the observation conditions of a
closed universe, by that being considerably distinguished from the conventional
Wheeler - DeWitt one. ... | [
{
"created": "Wed, 15 Sep 1999 15:00:10 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Savchenko",
"V. A.",
""
],
[
"Shestakova",
"T. P.",
""
],
[
"Vereshkov",
"G. M.",
""
]
] | A way of constructing mathematically correct quantum geometrodynamics of a closed universe is presented. The resulting theory appears to be gauge-noninvariant and thus consistent with the observation conditions of a closed universe, by that being considerably distinguished from the conventional Wheeler - DeWitt one. Fo... |
1212.6963 | I. V. Kanatchikov | I. V. Kanatchikov | On precanonical quantization of gravity in spin connection variables | 10 pages. v2: mostly corrects few typos. v3: published version in a
different latex format and titles in the references. v4: corrects typo in eq.
7 | AIP Conf.Proc. 1514 (2012) 73-76 | 10.1063/1.4791728 | null | gr-qc hep-th math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The basics of precanonical quantization and its relation to the functional
Schr\"odinger picture in QFT are briefly outlined. The approach is applied to
quantization of Einstein's gravity in vielbein and spin connection variables
and leads to a quantum dynamics described by the covariant Schr\"odinger
equation for th... | [
{
"created": "Mon, 31 Dec 2012 20:24:43 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Feb 2013 03:50:27 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Mar 2013 22:54:58 GMT",
"version": "v3"
},
{
"created": "Tue, 27 Jan 2015 13:16:44 GMT",
"version": "v4"
}
] | 2015-06-12 | [
[
"Kanatchikov",
"I. V.",
""
]
] | The basics of precanonical quantization and its relation to the functional Schr\"odinger picture in QFT are briefly outlined. The approach is applied to quantization of Einstein's gravity in vielbein and spin connection variables and leads to a quantum dynamics described by the covariant Schr\"odinger equation for the ... |
1111.6607 | Leonardo Gualtieri | V. Ferrari, L. Gualtieri, A. Maselli | Tidal interaction in compact binaries: a post-Newtonian affine framework | 15 pages, 1 table, 3 figures. Minor changes to match the version
published on Phys. Rev. D | null | 10.1103/PhysRevD.85.044045 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a semi-analytical approach, based on the post-Newtonian expansion
and on the affine approximation, to model the tidal deformation of neutron
stars in the coalescence of black hole-neutron star or neutron star-neutron
star binaries. Our equations describe, in a unified framework, both the system
orbital evo... | [
{
"created": "Mon, 28 Nov 2011 21:04:44 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Nov 2011 19:05:05 GMT",
"version": "v2"
},
{
"created": "Mon, 19 Mar 2012 16:24:49 GMT",
"version": "v3"
}
] | 2015-06-03 | [
[
"Ferrari",
"V.",
""
],
[
"Gualtieri",
"L.",
""
],
[
"Maselli",
"A.",
""
]
] | We develop a semi-analytical approach, based on the post-Newtonian expansion and on the affine approximation, to model the tidal deformation of neutron stars in the coalescence of black hole-neutron star or neutron star-neutron star binaries. Our equations describe, in a unified framework, both the system orbital evolu... |
1510.05213 | Neda Farhangkhah | N. Farhangkhah | New solutions of exotic charged black holes and their stability | 17 pages, 6 figures | Int. J. Mod. Phys. Vol. 25, No. 2 (2016) 1650030 | 10.1142/S0218271816500309 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find a class of charged black hole solutions in third order Lovelock
Gravity. To obtain this class of solutions, we are not confined to the usual
assumption of maximal symmetry on the horizon and will consider the solution
whose boundary is Einstein space with supplementary conditions on its Weyl
tensor. The Weyl ... | [
{
"created": "Sun, 18 Oct 2015 09:29:19 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Jan 2016 09:27:58 GMT",
"version": "v2"
}
] | 2018-04-12 | [
[
"Farhangkhah",
"N.",
""
]
] | We find a class of charged black hole solutions in third order Lovelock Gravity. To obtain this class of solutions, we are not confined to the usual assumption of maximal symmetry on the horizon and will consider the solution whose boundary is Einstein space with supplementary conditions on its Weyl tensor. The Weyl te... |
2111.04716 | Tomi Koivisto | Jose Beltr\'an Jim\'enez, Tomi S. Koivisto | Noether charges in the geometrical trinity of gravity | V2: 7 pages. Added several clarifications, including an appendix. To
appear as a PRD letter | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Noether currents are derived in a generic metric-affine theory of
gravity, and the holographic nature of the gravitational entropy and
energy-momentum is clarified. The main result is the verification of the
canonical resolution to the energy-momentum problem in the Noether formalism.
| [
{
"created": "Mon, 8 Nov 2021 18:49:46 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Jan 2022 19:21:31 GMT",
"version": "v2"
}
] | 2022-01-17 | [
[
"Jiménez",
"Jose Beltrán",
""
],
[
"Koivisto",
"Tomi S.",
""
]
] | The Noether currents are derived in a generic metric-affine theory of gravity, and the holographic nature of the gravitational entropy and energy-momentum is clarified. The main result is the verification of the canonical resolution to the energy-momentum problem in the Noether formalism. |
1209.2016 | Andreas G. A. Pithis | Andreas G. A. Pithis | The Gibbs paradox, Black hole entropy and the thermodynamics of isolated
horizons | 8 pages, closest to the published version; taken from the author's
diploma thesis | Phys. Rev. D 87, 084061 (2013) | 10.1103/PhysRevD.87.084061 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This letter presents a new, solely thermodynamical argument for considering
the states of the quantum isolated horizon of a black hole as distinguishable.
We claim that only if the states are distinguishable, the thermodynamic entropy
is an extensive quantity and can be well-defined. To show this, we make a
compariso... | [
{
"created": "Thu, 6 Sep 2012 17:47:16 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Nov 2012 23:08:59 GMT",
"version": "v2"
},
{
"created": "Mon, 15 Apr 2013 15:53:56 GMT",
"version": "v3"
}
] | 2016-11-26 | [
[
"Pithis",
"Andreas G. A.",
""
]
] | This letter presents a new, solely thermodynamical argument for considering the states of the quantum isolated horizon of a black hole as distinguishable. We claim that only if the states are distinguishable, the thermodynamic entropy is an extensive quantity and can be well-defined. To show this, we make a comparison ... |
gr-qc/9909012 | Jiri Podolsky | J. Podolsky, K. Vesely | Smearing of chaos in sandwich pp-waves | 17 pages, LaTeX, 9 figures, to be published in Class.Quantum Grav | Class.Quant.Grav. 16 (1999) 3599-3618 | null | null | gr-qc | null | Recent results demonstrating the chaotic behavior of geodesics in
non-homogeneous vacuum pp-wave solutions are generalized. Here we concentrate
on motion in non-homogeneous sandwich pp-waves and show that chaos smears as
the duration of these gravitational waves is reduced. As the number of radial
bounces of any geod... | [
{
"created": "Fri, 3 Sep 1999 14:39:26 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Podolsky",
"J.",
""
],
[
"Vesely",
"K.",
""
]
] | Recent results demonstrating the chaotic behavior of geodesics in non-homogeneous vacuum pp-wave solutions are generalized. Here we concentrate on motion in non-homogeneous sandwich pp-waves and show that chaos smears as the duration of these gravitational waves is reduced. As the number of radial bounces of any geodes... |
1910.02121 | Panagiota Kanti | Burkhard Kleihaus, Jutta Kunz and Panagiota Kanti | Particle-like ultracompact objects in Einstein-scalar-Gauss-Bonnet
theories | 7 pages, 4 figures, the analysis on the observable effects was
extended, a new plot, comments and references were added, version published
in Physics Letters B | null | 10.1016/j.physletb.2020.135401 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new type of ultracompact objects, featuring lightrings and
echoes in the gravitational-wave spectrum. These particle-like solutions arise
in Einstein-scalar-Gauss-Bonnet theories in four spacetime dimensions,
representing globally regular spacetime manifolds. The scalar field diverges at
the center, but ... | [
{
"created": "Fri, 4 Oct 2019 19:51:38 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Apr 2020 10:11:46 GMT",
"version": "v2"
}
] | 2020-04-22 | [
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Kanti",
"Panagiota",
""
]
] | We present a new type of ultracompact objects, featuring lightrings and echoes in the gravitational-wave spectrum. These particle-like solutions arise in Einstein-scalar-Gauss-Bonnet theories in four spacetime dimensions, representing globally regular spacetime manifolds. The scalar field diverges at the center, but th... |
2203.02297 | Calin Iuliu Lazaroiu | Elena Mirela Babalic, Calin Iuliu Lazaroiu | The infrared behavior of tame two-field cosmological models | 52 pages, numerous figures; v2:some typos corrected, references added | Nucl. Phys. B 983 (2022), 115929 | 10.1016/j.nuclphysb.2022.115929 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the first order infared behavior of tame hyperbolizable two-field
cosmological models, defined as those classical two-field models whose scalar
manifold is a connected, oriented and topologically finite hyperbolizable
Riemann surface $(\Sigma,\mathcal{G})$ and whose scalar potential $\Phi$ admits
a positive ... | [
{
"created": "Thu, 3 Mar 2022 13:43:57 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Mar 2022 10:18:46 GMT",
"version": "v2"
}
] | 2022-08-30 | [
[
"Babalic",
"Elena Mirela",
""
],
[
"Lazaroiu",
"Calin Iuliu",
""
]
] | We study the first order infared behavior of tame hyperbolizable two-field cosmological models, defined as those classical two-field models whose scalar manifold is a connected, oriented and topologically finite hyperbolizable Riemann surface $(\Sigma,\mathcal{G})$ and whose scalar potential $\Phi$ admits a positive an... |
gr-qc/0406007 | Patricio S. Letelier | D. Vog and P. S. Letelier | Exact Relativistic Static Charged Dust Disks and Non-axisymmetric
Structures | Classical and Quantum Gravity (in press). 15 pages, LaTex, 8 .eps
figs | Class.Quant.Grav. 21 (2004) 3369-3378 | 10.1088/0264-9381/21/14/003 | null | gr-qc | null | The well-known ``displace, cut and reflect'' method used to generate disks
from given solutions of Einstein field equations is applied to the
superposition of twoextreme Reissner-Nordstrom black holes to construct disks
made of charged dust and alsonon-axisymmetric planar distributions of charged
dust on the z=0 plan... | [
{
"created": "Wed, 2 Jun 2004 19:25:49 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Vog",
"D.",
""
],
[
"Letelier",
"P. S.",
""
]
] | The well-known ``displace, cut and reflect'' method used to generate disks from given solutions of Einstein field equations is applied to the superposition of twoextreme Reissner-Nordstrom black holes to construct disks made of charged dust and alsonon-axisymmetric planar distributions of charged dust on the z=0 plane.... |
2308.05328 | Paolo Valtancoli | P. Valtancoli | Bumblebee gravity with cosmological constant | 8 pages, no figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We show how to find exact black hole solutions in bumblebee gravity with
cosmological constant including BTZ black holes.
| [
{
"created": "Thu, 10 Aug 2023 04:08:13 GMT",
"version": "v1"
}
] | 2023-08-11 | [
[
"Valtancoli",
"P.",
""
]
] | We show how to find exact black hole solutions in bumblebee gravity with cosmological constant including BTZ black holes. |
gr-qc/9804035 | Justino Martinez | L. Herrera, A. Di Prisco and J. Martinez | Thermal conduction before relaxation in slowly rotating fluids | Latex 2.09 (RevTex style) 19 pages To be published in Journal of
Mathematical Physics | J.Math.Phys. 39 (1998) 3260-3270 | 10.1063/1.532252 | null | gr-qc astro-ph | null | For slowly rotating fluids, we establish the existence of a critical point
similar to the one found for non-rotating systems. As the fluid approaches the
critical point, the effective inertial mass of any fluid element decreases,
vanishing at that point and changing of sign beyond it. This result implies
that first o... | [
{
"created": "Thu, 16 Apr 1998 10:28:21 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Herrera",
"L.",
""
],
[
"Di Prisco",
"A.",
""
],
[
"Martinez",
"J.",
""
]
] | For slowly rotating fluids, we establish the existence of a critical point similar to the one found for non-rotating systems. As the fluid approaches the critical point, the effective inertial mass of any fluid element decreases, vanishing at that point and changing of sign beyond it. This result implies that first ord... |
gr-qc/0303058 | Kaiki Taro Inoue | Kaiki Taro Inoue, Takahiro Tanaka | Gravitational Waves from Sub-lunar Mass Primordial Black Hole Binaries -
A New Probe of Extradimensions | 4 pages, 1 figure, typos corrected | Phys.Rev.Lett. 91 (2003) 021101 | 10.1103/PhysRevLett.91.021101 | null | gr-qc astro-ph hep-ph | null | In many braneworld models, gravity is largely modified at the electro-weak
scale ~ 1TeV. In such models, primordial black holes (PBHs) with lunar mass M ~
10^{-7}M_sun might have been produced when the temperature of the universe was
at ~ 1TeV. If a significant fraction of the dark halo of our galaxy consists of
thes... | [
{
"created": "Sun, 16 Mar 2003 02:42:37 GMT",
"version": "v1"
},
{
"created": "Sun, 27 Jul 2003 05:48:23 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Inoue",
"Kaiki Taro",
""
],
[
"Tanaka",
"Takahiro",
""
]
] | In many braneworld models, gravity is largely modified at the electro-weak scale ~ 1TeV. In such models, primordial black holes (PBHs) with lunar mass M ~ 10^{-7}M_sun might have been produced when the temperature of the universe was at ~ 1TeV. If a significant fraction of the dark halo of our galaxy consists of these ... |
gr-qc/0303116 | Abel Camacho | Abel Camacho and Alfredo Macias (Dept. of Physics, Universidad
Autonoma Metropolitana--Iztapalapa) | Space--time torsion contribution to quantum interference phases | Contribution to the Proceedings of the Meeting ''Topics in
Mathematical Physics, General Relativity, and Cosmology''. On the Occasion of
the 75th Birthday of Jerzy F. Plebanski. CINVESTAV, September, 17th--20th,
2002 | Phys.Lett. B617 (2005) 118-123 | 10.1016/j.physletb.2005.04.065 | null | gr-qc quant-ph | null | From the latest experimental readouts in this context an intriguing
discrepancy has been elicited. Indeed, theory and experiment dissent by one per
cent, and though this fact could be a consequence of the mounting of the
experimental device, it might also embody a difference between the way in which
gravity behaves i... | [
{
"created": "Mon, 31 Mar 2003 18:58:56 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Camacho",
"Abel",
"",
"Dept. of Physics, Universidad\n Autonoma Metropolitana--Iztapalapa"
],
[
"Macias",
"Alfredo",
"",
"Dept. of Physics, Universidad\n Autonoma Metropolitana--Iztapalapa"
]
] | From the latest experimental readouts in this context an intriguing discrepancy has been elicited. Indeed, theory and experiment dissent by one per cent, and though this fact could be a consequence of the mounting of the experimental device, it might also embody a difference between the way in which gravity behaves in ... |
gr-qc/0308032 | Pavel Krtous | Ioannis Kouletsis, Petr Hajicek, Jiri Bicak | Gauge-invariant Hamiltonian dynamics of cylindrical gravitational waves | 16 pages, 1 figure | Phys.Rev. D68 (2003) 104013 | 10.1103/PhysRevD.68.104013 | null | gr-qc hep-th | null | The model of cylindrical gravitational waves is employed to work out and
check a recent proposal in Ref. [11] how a diffeomorphism-invariant Hamiltonian
dynamics is to be constructed. The starting point is the action by Ashtekar and
Pierri because it contains the boundary term that makes it differentiable for
non-tri... | [
{
"created": "Mon, 11 Aug 2003 14:38:35 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Kouletsis",
"Ioannis",
""
],
[
"Hajicek",
"Petr",
""
],
[
"Bicak",
"Jiri",
""
]
] | The model of cylindrical gravitational waves is employed to work out and check a recent proposal in Ref. [11] how a diffeomorphism-invariant Hamiltonian dynamics is to be constructed. The starting point is the action by Ashtekar and Pierri because it contains the boundary term that makes it differentiable for non-trivi... |
gr-qc/0401081 | Piotr Chrusciel | M. Anderson, P.T. Chrusciel, E. Delay | Non-trivial, static, geodesically complete space-times with a negative
cosmological constant II. $n\ge 5$ | Proceedings of the Strasbourg Meeting on AdS-CFT correspondence,
O.Biquard, V.Turaev, Eds., IRMA Lectures in Mathematics and Theoretical
Physics, de Gruyter, Berlin, New York, in press; latex2e, 39 pages in A4;
minor corrections | null | null | null | gr-qc hep-th math.DG | null | We show that the recent work of Lee [23] implies existence of a large class
of new singularity-free strictly static Lorentzian vacuum solutions of the
Einstein equations with a negative cosmological constant. This holds in all
space-time dimensions greater than or equal to four, and leads both to strictly
static solu... | [
{
"created": "Mon, 19 Jan 2004 16:07:31 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Jan 2005 15:20:58 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Anderson",
"M.",
""
],
[
"Chrusciel",
"P. T.",
""
],
[
"Delay",
"E.",
""
]
] | We show that the recent work of Lee [23] implies existence of a large class of new singularity-free strictly static Lorentzian vacuum solutions of the Einstein equations with a negative cosmological constant. This holds in all space-time dimensions greater than or equal to four, and leads both to strictly static soluti... |
0812.3336 | Otakar Svitek | Otakar Svitek | The damping of gravitational waves in dust | 7 pages, accepted to Phys. Scr | Phys.Scripta 79:025003,2009 | 10.1088/0031-8949/79/02/025003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine a simple model of interaction of gravitational waves with matter
(primarily represented by dust). The aim is to investigate a possible damping
effect on the intensity of gravitational wave when passing through media. This
might be important for gravitational wave astronomy when the sources are
obscured by ... | [
{
"created": "Wed, 17 Dec 2008 16:52:35 GMT",
"version": "v1"
}
] | 2010-04-14 | [
[
"Svitek",
"Otakar",
""
]
] | We examine a simple model of interaction of gravitational waves with matter (primarily represented by dust). The aim is to investigate a possible damping effect on the intensity of gravitational wave when passing through media. This might be important for gravitational wave astronomy when the sources are obscured by du... |
1611.07367 | Tim Dietrich | Tim Dietrich, Sebastiano Bernuzzi, Maximiliano Ujevic, Wolfgang Tichy | Gravitational waves and mass ejecta from binary neutron star mergers:
Effect of the stars' rotation | 21 pages, 19 figures | Phys. Rev. D 95, 044045 (2017) | 10.1103/PhysRevD.95.044045 | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present new (3+1) dimensional numerical relativity simulations of the
binary neutron star (BNS) mergers that take into account the NS spins. We
consider different spin configurations, aligned or antialigned to the orbital
angular momentum, for equal and unequal mass BNS and for two equations of
state. All the simu... | [
{
"created": "Tue, 22 Nov 2016 15:36:46 GMT",
"version": "v1"
}
] | 2017-03-08 | [
[
"Dietrich",
"Tim",
""
],
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Ujevic",
"Maximiliano",
""
],
[
"Tichy",
"Wolfgang",
""
]
] | We present new (3+1) dimensional numerical relativity simulations of the binary neutron star (BNS) mergers that take into account the NS spins. We consider different spin configurations, aligned or antialigned to the orbital angular momentum, for equal and unequal mass BNS and for two equations of state. All the simula... |
gr-qc/0301118 | Dzhunushaliev Vladimir | V. Dzhunushaliev | Some properties of a $\Delta-$string | LATEX, 7 pages | Class.Quant.Grav. 20 (2003) 2407-2416 | 10.1088/0264-9381/20/11/329 | null | gr-qc hep-th | null | The properties of 5D gravitational flux tubes are considered. With the cross
section and 5th dimension in the Planck region such tubes can be considered as
string-like objects, namely $\Delta-$strings. A model of attachment of
$\Delta-$string to a spacetime is offered. It is shown that the attachment
point is a model... | [
{
"created": "Wed, 29 Jan 2003 03:04:08 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Dzhunushaliev",
"V.",
""
]
] | The properties of 5D gravitational flux tubes are considered. With the cross section and 5th dimension in the Planck region such tubes can be considered as string-like objects, namely $\Delta-$strings. A model of attachment of $\Delta-$string to a spacetime is offered. It is shown that the attachment point is a model o... |
2405.06120 | Nils Leif Vu | Nils L. Vu | A discontinuous Galerkin scheme for elliptic equations on extremely
stretched grids | 12 pages, 10 figures. Results are reproducible with the ancillary
input files | null | null | null | gr-qc cs.NA math.NA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Discontinuous Galerkin (DG) methods for solving elliptic equations are
gaining popularity in the computational physics community for their high-order
spectral convergence and their potential for parallelization on computing
clusters. However, problems in numerical relativity with extremely stretched
grids, such as in... | [
{
"created": "Thu, 9 May 2024 21:54:04 GMT",
"version": "v1"
}
] | 2024-05-13 | [
[
"Vu",
"Nils L.",
""
]
] | Discontinuous Galerkin (DG) methods for solving elliptic equations are gaining popularity in the computational physics community for their high-order spectral convergence and their potential for parallelization on computing clusters. However, problems in numerical relativity with extremely stretched grids, such as init... |
gr-qc/9604002 | null | M. Gasperini and M. Giovannini | Normal modes for metric fluctuations in a class of higher-dimensional
backgrounds | 19 pages, LATEX, an explicit example is added to discuss the possible
dependence of the perturbation spectrum on the number of internal dimensions.
To apper in Class. Quantum Grav | Class.Quant.Grav.14:735-747,1997 | 10.1088/0264-9381/14/3/015 | CERN-TH/96-87 | gr-qc astro-ph hep-th | null | We discuss a gauge invariant approach to the theory of cosmological
perturbations in a higher-dimensonal background. We find the normal modes which
diagonalize the perturbed action, for a scalar field minimally coupled to
gravity, in a higher-dimensional manifold M of the Bianchi-type I, under the
assumption that the... | [
{
"created": "Mon, 1 Apr 1996 14:21:04 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Jan 1997 08:14:56 GMT",
"version": "v2"
}
] | 2010-04-30 | [
[
"Gasperini",
"M.",
""
],
[
"Giovannini",
"M.",
""
]
] | We discuss a gauge invariant approach to the theory of cosmological perturbations in a higher-dimensonal background. We find the normal modes which diagonalize the perturbed action, for a scalar field minimally coupled to gravity, in a higher-dimensional manifold M of the Bianchi-type I, under the assumption that the t... |
1712.05933 | Salvatore Capozziello | Habib Abedi and Salvatore Capozziello | Gravitational waves in modified teleparallel theories of gravity | 9 pages, to be published in Eur.Phys.J. C | null | 10.1140/epjc/s10052-018-5967-x | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Teleparallel theory of gravity and its modifications have been studied
extensively in literature. However, gravitational waves has not been studied
enough in the framework of teleparallelism. In the present study, we discuss
gravitational waves in general theories of teleparallel gravity containing the
torsion scalar... | [
{
"created": "Sat, 16 Dec 2017 10:37:21 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Jun 2018 20:01:11 GMT",
"version": "v2"
}
] | 2018-07-04 | [
[
"Abedi",
"Habib",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | Teleparallel theory of gravity and its modifications have been studied extensively in literature. However, gravitational waves has not been studied enough in the framework of teleparallelism. In the present study, we discuss gravitational waves in general theories of teleparallel gravity containing the torsion scalar $... |
2108.11274 | Subhajit Barman | Saumya Ghosh and Subhajit Barman | Hawking effect in an extremal Kerr black hole spacetime | Modified version, to appear in Phys. Rev. D | null | 10.1103/PhysRevD.105.045005 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that extremal black holes do not Hawking radiate, which is
usually realized by taking an extremal limit from the nonextremal case.
However, one cannot perceive the same phenomenon using the Bogoliubov
transformation method starting from an extremal black hole itself, i.e.,
without the limiting case c... | [
{
"created": "Wed, 25 Aug 2021 14:54:15 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Feb 2022 12:31:33 GMT",
"version": "v2"
}
] | 2022-02-23 | [
[
"Ghosh",
"Saumya",
""
],
[
"Barman",
"Subhajit",
""
]
] | It is well known that extremal black holes do not Hawking radiate, which is usually realized by taking an extremal limit from the nonextremal case. However, one cannot perceive the same phenomenon using the Bogoliubov transformation method starting from an extremal black hole itself, i.e., without the limiting case con... |
gr-qc/9705045 | Alejandro Jakubi | Luis P. Chimento, Alejandro S. Jakubi and Vicen\c{c} M\'endez | New cosmological solutions and stability analysis in full extended
thermodynamics | 13 pages, LaTeX 2.09. To be published in International Journal of
Modern Physics D | Int.J.Mod.Phys. D7 (1998) 177-188 | 10.1142/S0218271898000140 | null | gr-qc | null | The Einstein's field equations of FRW universes filled with a dissipative
fluid described by full theory of causal transport equations are analyzed. New
exact solutions are found using a non-local transformations on the nonlinear
differential equation for the Hubble factor. The stability of the de Sitter and
asymptot... | [
{
"created": "Sat, 17 May 1997 01:33:13 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Chimento",
"Luis P.",
""
],
[
"Jakubi",
"Alejandro S.",
""
],
[
"Méndez",
"Vicenç",
""
]
] | The Einstein's field equations of FRW universes filled with a dissipative fluid described by full theory of causal transport equations are analyzed. New exact solutions are found using a non-local transformations on the nonlinear differential equation for the Hubble factor. The stability of the de Sitter and asymptotic... |
1603.07571 | Tao Zhou | Tao Zhou | Lorentz gauge and Coulomb gauge for tetrad field of gravity | 5 pages, no figure, comments are welcome | Universe 8, 659 (2022) | 10.3390/universe8120659 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general relativity, an inertial frame can only be established in a small
region of spacetime, and locally inertial frames are mathematically represented
by a tetrad field in gravity. The tetrad field is not unique due to the freedom
to perform Lorentz transformations in locally inertial frames, and there exists
fr... | [
{
"created": "Sun, 20 Mar 2016 16:12:51 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Dec 2022 08:33:50 GMT",
"version": "v2"
}
] | 2022-12-16 | [
[
"Zhou",
"Tao",
""
]
] | In general relativity, an inertial frame can only be established in a small region of spacetime, and locally inertial frames are mathematically represented by a tetrad field in gravity. The tetrad field is not unique due to the freedom to perform Lorentz transformations in locally inertial frames, and there exists free... |
2302.06928 | Wan Cong Ms | Piotr T. Chru\'sciel and Wan Cong | Gluing variations | Proof for extending vacuum metric on truncated cone extended; typos
corrected; now, 30 pages main text + 7 pages appendix, 8 figures | null | 10.1088/1361-6382/ace494 | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by-sa/4.0/ | We establish several results on gluing/embedding/extending geometric
structures in vacuum spacetimes with a cosmological constant in any spacetime
dimensions $d\ge 4$, with emphasis on characteristic data. A useful tool is
provided by the notion of submanifold-data of order $k$. As an application of
our methods we pr... | [
{
"created": "Tue, 14 Feb 2023 09:31:07 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Jul 2023 01:19:44 GMT",
"version": "v2"
}
] | 2023-08-02 | [
[
"Chruściel",
"Piotr T.",
""
],
[
"Cong",
"Wan",
""
]
] | We establish several results on gluing/embedding/extending geometric structures in vacuum spacetimes with a cosmological constant in any spacetime dimensions $d\ge 4$, with emphasis on characteristic data. A useful tool is provided by the notion of submanifold-data of order $k$. As an application of our methods we prov... |
1401.1280 | Farhad Darabi | F. Darabi, A. Parsiya | Vector inflation by kinetic coupled gravity | 9 pages | IJMPD, Volume 23, Issue 8, id. 1450069 (2014) | 10.1142/S0218271814500692 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Vector inflation is a newly established model where inflation is driven by
non-minimally coupled massive vector fields with a potential term. This model
is similar to the model of chaotic inflation with scalar fields, except that
for vector fields the isotropy of expansion is achieved either by considering a
triplet ... | [
{
"created": "Tue, 7 Jan 2014 06:02:30 GMT",
"version": "v1"
}
] | 2014-10-06 | [
[
"Darabi",
"F.",
""
],
[
"Parsiya",
"A.",
""
]
] | Vector inflation is a newly established model where inflation is driven by non-minimally coupled massive vector fields with a potential term. This model is similar to the model of chaotic inflation with scalar fields, except that for vector fields the isotropy of expansion is achieved either by considering a triplet of... |
0812.4208 | Eliu Huerta | E. A. Huerta, Jonathan R. Gair | Influence of conservative corrections on parameter estimation for
extreme-mass-ratio inspirals | 28 pages, 9 figures, accepted for publication in Phys Rev D; v3
includes corrections to self-force results described in published erratum | Phys.Rev.D79:084021,2009; Erratum-ibid.D84:049903,2011 | 10.1103/PhysRevD.79.084021 10.1103/PhysRevD.84.049903 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an improved numerical kludge waveform model for circular,
equatorial EMRIs. The model is based on true Kerr geodesics, augmented by
radiative self-force corrections derived from perturbative calculations, and in
this paper for the first time we include conservative self-force corrections
that we derive by ... | [
{
"created": "Mon, 22 Dec 2008 14:58:36 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Apr 2009 17:12:20 GMT",
"version": "v2"
},
{
"created": "Tue, 20 Sep 2011 18:07:02 GMT",
"version": "v3"
},
{
"created": "Wed, 21 Sep 2011 18:32:34 GMT",
"version": "v4"
}
] | 2011-09-22 | [
[
"Huerta",
"E. A.",
""
],
[
"Gair",
"Jonathan R.",
""
]
] | We present an improved numerical kludge waveform model for circular, equatorial EMRIs. The model is based on true Kerr geodesics, augmented by radiative self-force corrections derived from perturbative calculations, and in this paper for the first time we include conservative self-force corrections that we derive by co... |
2208.03723 | Rong-Jia Yang | Tong-Yu He, Ziqiang Cai, Rong-Jia Yang | Thin accretion disks around a black hole in Einstein-Aether-scalar
theory | 9 pages, 6 figures, 1 table, some errors are corrected | Eur. Phys. J. C 82, 1067 (2022) | 10.1140/epjc/s10052-022-11037-x | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We consider the accretion process in the thin disk around a supermassive
black hole in Einstein-aether-scalar theory. We probe the effects of the model
parameter on the physical properties of the disk. The results show that with
increasing value of the parameter, the energy flux, the radiation temperature,
the spectr... | [
{
"created": "Sun, 7 Aug 2022 13:50:01 GMT",
"version": "v1"
},
{
"created": "Sun, 27 Nov 2022 13:44:25 GMT",
"version": "v2"
}
] | 2022-11-29 | [
[
"He",
"Tong-Yu",
""
],
[
"Cai",
"Ziqiang",
""
],
[
"Yang",
"Rong-Jia",
""
]
] | We consider the accretion process in the thin disk around a supermassive black hole in Einstein-aether-scalar theory. We probe the effects of the model parameter on the physical properties of the disk. The results show that with increasing value of the parameter, the energy flux, the radiation temperature, the spectra ... |
1912.08607 | Micha{\l} Eckstein | Erik Aurell, Micha{\l} Eckstein, Pawe{\l} Horodecki | Quantum black holes as solvents | 8 pages, 1 figure. Version published in FoP | Found. Phys. 51, 54 (2021) | 10.1007/s10701-021-00456-7 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Almost all of the entropy in the universe is in the form of
Bekenstein--Hawking (BH) entropy of super-massive black holes. This entropy, if
it satisfies Boltzmann's equation $S=\log{\cal N}$, hence represents almost all
the accessible phase space of the Universe, somehow associated to objects which
themselves fill ou... | [
{
"created": "Wed, 18 Dec 2019 13:49:54 GMT",
"version": "v1"
},
{
"created": "Mon, 17 May 2021 15:33:35 GMT",
"version": "v2"
}
] | 2021-05-18 | [
[
"Aurell",
"Erik",
""
],
[
"Eckstein",
"Michał",
""
],
[
"Horodecki",
"Paweł",
""
]
] | Almost all of the entropy in the universe is in the form of Bekenstein--Hawking (BH) entropy of super-massive black holes. This entropy, if it satisfies Boltzmann's equation $S=\log{\cal N}$, hence represents almost all the accessible phase space of the Universe, somehow associated to objects which themselves fill out ... |
2304.05209 | Muzaffer Adak | Muzaffer Adak, Nese Ozdemir, Caglar Pala | Weyl-Lorentz-U(1)-invariant symmetric teleparallel gravity in three
dimensions | To appear in EPJC | Eur. Phys. J. C 83 (2023) 606 | 10.1140/epjc/s10052-023-11771-w | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a Weyl-Lorentz-$U(1)$-invariant gravity model written in terms of
a scalar field, electromagnetic field and nonmetricity without torsion and
curvature, the so-called symmetric teleparallel geometry, in three dimensions.
Firstly, we obtain variational field equations from a Lagrangian. Then, we find
some c... | [
{
"created": "Tue, 11 Apr 2023 13:19:23 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Jun 2023 21:47:31 GMT",
"version": "v2"
}
] | 2023-07-14 | [
[
"Adak",
"Muzaffer",
""
],
[
"Ozdemir",
"Nese",
""
],
[
"Pala",
"Caglar",
""
]
] | We consider a Weyl-Lorentz-$U(1)$-invariant gravity model written in terms of a scalar field, electromagnetic field and nonmetricity without torsion and curvature, the so-called symmetric teleparallel geometry, in three dimensions. Firstly, we obtain variational field equations from a Lagrangian. Then, we find some cla... |
gr-qc/0107022 | Michael Martin Nieto | John D. Anderson, Eunice L. Lau, Slava G. Turyshev, Philip A. Laing,
and Michael Martin Nieto | Search for a Standard Explanation of the Pioneer Anomaly | Changes made for publication | Mod.Phys.Lett. A17 (2002) 875-886 | 10.1142/S0217732302007107 | LA-UR-01-3512 | gr-qc | null | The data from Pioneer 10 and 11 shows an anomalous, constant, Doppler
frequency drift that can be interpreted as an acceleration directed towards the
Sun of a_P = (8.74 \pm 1.33) x 10^{-8} cm/s^2. Although one can consider a new
physical origin for the anomaly, one first must investigate the contributions
of the prim... | [
{
"created": "Thu, 5 Jul 2001 22:52:47 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Jan 2002 05:09:15 GMT",
"version": "v2"
},
{
"created": "Wed, 12 Jun 2002 21:57:58 GMT",
"version": "v3"
}
] | 2016-12-21 | [
[
"Anderson",
"John D.",
""
],
[
"Lau",
"Eunice L.",
""
],
[
"Turyshev",
"Slava G.",
""
],
[
"Laing",
"Philip A.",
""
],
[
"Nieto",
"Michael Martin",
""
]
] | The data from Pioneer 10 and 11 shows an anomalous, constant, Doppler frequency drift that can be interpreted as an acceleration directed towards the Sun of a_P = (8.74 \pm 1.33) x 10^{-8} cm/s^2. Although one can consider a new physical origin for the anomaly, one first must investigate the contributions of the prime ... |
gr-qc/0510014 | Muxin Han | Muxin Han, Yongge Ma | Master Constraint Operator in Loop Quantum Gravity | 11 pages, significant modification in section 2, accepted for
publication in Phys. Lett. B | Phys.Lett.B635:225-231,2006 | 10.1016/j.physletb.2006.03.004 | null | gr-qc math-ph math.MP | null | We introduce a master constraint operator $\hat{\mathbf{M}}$ densely defined
in the diffeomorphism invariant Hilbert space in loop quantum gravity, which
corresponds classically to the master constraint in the programme. It is shown
that $\hat{\mathbf{M}}$ is positive and symmetric, and hence has its Friedrichs
self-... | [
{
"created": "Tue, 4 Oct 2005 16:43:12 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Oct 2005 01:03:57 GMT",
"version": "v2"
},
{
"created": "Fri, 4 Nov 2005 05:41:19 GMT",
"version": "v3"
},
{
"created": "Fri, 3 Mar 2006 15:25:11 GMT",
"version": "v4"
}
] | 2014-11-17 | [
[
"Han",
"Muxin",
""
],
[
"Ma",
"Yongge",
""
]
] | We introduce a master constraint operator $\hat{\mathbf{M}}$ densely defined in the diffeomorphism invariant Hilbert space in loop quantum gravity, which corresponds classically to the master constraint in the programme. It is shown that $\hat{\mathbf{M}}$ is positive and symmetric, and hence has its Friedrichs self-ad... |
1304.1434 | Jos\'e Cleriston Campos de Souza | J. C. C. de Souza and M. O. C. Pires | Domain Wall Model in the Galactic Bose-Einstein Condensate Halo | 11 pages; 6 figures; v.2: 12 pages, matches published version in JCAP | null | 10.1088/1475-7516/2013/05/027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We assume that the galactical dark matter halo, considered composed of an
axionlike particles Bose-Einstein condensate \cite{pir12}, can present
topological defects, namely domain walls, arising as the dark soliton solution
for the Gross-Pitaevskii equation in a self-graviting potential. We investigate
the influence ... | [
{
"created": "Thu, 4 Apr 2013 17:16:10 GMT",
"version": "v1"
},
{
"created": "Wed, 22 May 2013 13:41:09 GMT",
"version": "v2"
}
] | 2013-05-23 | [
[
"de Souza",
"J. C. C.",
""
],
[
"Pires",
"M. O. C.",
""
]
] | We assume that the galactical dark matter halo, considered composed of an axionlike particles Bose-Einstein condensate \cite{pir12}, can present topological defects, namely domain walls, arising as the dark soliton solution for the Gross-Pitaevskii equation in a self-graviting potential. We investigate the influence th... |
gr-qc/0202018 | Patrizia Vitale | Gaetano Vilasi and Patrizia Vitale | On the SO(2,1) symmetry in General Relativity | 10 pages, latex, no figures | Class.Quant.Grav. 19 (2002) 3333-3340 | 10.1088/0264-9381/19/12/315 | ESI-1110 | gr-qc | null | The role of the SO(2,1) symmetry in General Relativity is analyzed.
Cosmological solutions of Einstein field equations invariant with respect to a
space-like Lie algebra G_r, with r between 3 and 6 and containing so(2,1) as a
subalgebra, are also classified.
| [
{
"created": "Wed, 6 Feb 2002 11:42:30 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Vilasi",
"Gaetano",
""
],
[
"Vitale",
"Patrizia",
""
]
] | The role of the SO(2,1) symmetry in General Relativity is analyzed. Cosmological solutions of Einstein field equations invariant with respect to a space-like Lie algebra G_r, with r between 3 and 6 and containing so(2,1) as a subalgebra, are also classified. |
gr-qc/0105078 | Daniel Grumiller | D. Grumiller | Quantum Dilaton Gravity in Two Dimensions with Matter | 7 figures, 173 pages, PhD thesis TU-Vienna (advisor: Wolfgang
Kummer), v2: shortened abstract, corrected typos, added references, v3:
corrected typos (*sigh*), updated references, v4: yes, still some typos;
awarded with the Austrian Victor-Hess prize 2003 | null | null | null | gr-qc hep-th | null | In this thesis special emphasis is put on the quantization of the spherically
reduced Einstein-massless-Klein-Gordon model using a first order approach for
geometric quantities, because phenomenologically it is probably the most
relevant of all dilaton models with matter. After a Hamiltonian BRST analysis
path integr... | [
{
"created": "Mon, 21 May 2001 18:56:16 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Jun 2001 15:49:21 GMT",
"version": "v2"
},
{
"created": "Thu, 15 Nov 2001 09:21:48 GMT",
"version": "v3"
},
{
"created": "Tue, 20 May 2003 14:39:02 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Grumiller",
"D.",
""
]
] | In this thesis special emphasis is put on the quantization of the spherically reduced Einstein-massless-Klein-Gordon model using a first order approach for geometric quantities, because phenomenologically it is probably the most relevant of all dilaton models with matter. After a Hamiltonian BRST analysis path integral... |
1002.3600 | Kayll Lake | Kayll Lake | Some notes on the Kruskal - Szekeres completion | One typo corrected | Class. Quantum Grav. 27 097001 2010 | 10.1088/0264-9381/27/9/097001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Kruskal - Szekeres (KS) completion of the Schwarzschild spacetime is open
to Synge's methodological criticism that the KS procedure generates "good"
coordinates from "bad". This is addressed here in two ways: First I generate
the KS coordinates from Israel coordinates, which are also "good", and then I
generate t... | [
{
"created": "Thu, 18 Feb 2010 20:12:17 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Mar 2010 17:40:43 GMT",
"version": "v2"
},
{
"created": "Wed, 12 May 2010 12:49:19 GMT",
"version": "v3"
}
] | 2015-05-18 | [
[
"Lake",
"Kayll",
""
]
] | The Kruskal - Szekeres (KS) completion of the Schwarzschild spacetime is open to Synge's methodological criticism that the KS procedure generates "good" coordinates from "bad". This is addressed here in two ways: First I generate the KS coordinates from Israel coordinates, which are also "good", and then I generate the... |
2310.01249 | Lijing Shao | Jierui Hu, Dicong Liang, Lijing Shao | Probing nontensorial gravitational waves with a next-generation
ground-based detector network | 10 pages, 4 figures; accepted by PRD | Phys. Rev. D 109 (2024) 084023 | 10.1103/PhysRevD.109.084023 | ET-0314A-23 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | In General Relativity, there are only two polarizations for gravitational
waves. However, up to six polarizations are possible in a generic metric theory
of gravity. Therefore, measuring the polarization content of gravitational
waves provides an efficient way to test theories of gravity. We analyze the
sensitivity o... | [
{
"created": "Mon, 2 Oct 2023 14:32:36 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Mar 2024 01:40:49 GMT",
"version": "v2"
}
] | 2024-04-12 | [
[
"Hu",
"Jierui",
""
],
[
"Liang",
"Dicong",
""
],
[
"Shao",
"Lijing",
""
]
] | In General Relativity, there are only two polarizations for gravitational waves. However, up to six polarizations are possible in a generic metric theory of gravity. Therefore, measuring the polarization content of gravitational waves provides an efficient way to test theories of gravity. We analyze the sensitivity of ... |
1301.1411 | Sunil Maharaj | M. C. Kweyama, K. S. Govinder, S. D. Maharaj | A fifth order differential equation for charged perfect fluids | 17 pages, To appear in J. Math. Phys | J. Math. Phys. 53: 033707, 2012 | 10.1063/1.3694279 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the master nonlinear partial differential equation that
governs the evolution of shear-free spherically symmetric charged fluids. We
use an approach which has not been considered previously for the underlying
equation in shear-free spherically symmetric spacetimes. We derive a fifth
order purely differ... | [
{
"created": "Tue, 8 Jan 2013 04:46:54 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Kweyama",
"M. C.",
""
],
[
"Govinder",
"K. S.",
""
],
[
"Maharaj",
"S. D.",
""
]
] | We investigate the master nonlinear partial differential equation that governs the evolution of shear-free spherically symmetric charged fluids. We use an approach which has not been considered previously for the underlying equation in shear-free spherically symmetric spacetimes. We derive a fifth order purely differen... |
2310.06607 | Yu Gao | Yu Gao, Huaqiao Zhang and Wei Xu | A M\"ossbauer Scheme to Probe Gravitational Waves | 11 pages, 5 figures, 2 tables | Science Bulletin, 2024 | 10.1016/j.scib.2024.07.038 | null | gr-qc astro-ph.IM nucl-ex | http://creativecommons.org/licenses/by/4.0/ | Under the local gravitational field, perturbations from high-frequency
gravitational waves can cause a vertical shift of the M\"ossbauer resonance
height. Considering a stationary scheme with the $^{109}$Ag isotope, we
demonstrate that the extremely high precision of M\"ossbauer resonance allows
for competitive gravi... | [
{
"created": "Tue, 10 Oct 2023 13:14:54 GMT",
"version": "v1"
}
] | 2024-08-13 | [
[
"Gao",
"Yu",
""
],
[
"Zhang",
"Huaqiao",
""
],
[
"Xu",
"Wei",
""
]
] | Under the local gravitational field, perturbations from high-frequency gravitational waves can cause a vertical shift of the M\"ossbauer resonance height. Considering a stationary scheme with the $^{109}$Ag isotope, we demonstrate that the extremely high precision of M\"ossbauer resonance allows for competitive gravita... |
2202.12735 | Henri Inchausp\'e Dr. | Henri Inchausp\'e, Martin Hewitson, Orion Sauter, Peter Wass | New LISA dynamics feedback control scheme: Common-mode isolation of test
mass control and probes of test-mass acceleration | 17 pages, 9 figures | Phys. Rev. D 106, 022006 (2022) | 10.1103/PhysRevD.106.022006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Drag-Free and Attitude Control System is a central element of LISA
technology, ensuring the very high dynamic stability of spacecraft and test
masses required in order to reach the sensitivity that gravitational wave
astronomy in space requires. Applying electrostatic forces on test-masses is
unavoidable but shou... | [
{
"created": "Fri, 25 Feb 2022 14:49:34 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Aug 2022 15:25:49 GMT",
"version": "v2"
}
] | 2022-08-18 | [
[
"Inchauspé",
"Henri",
""
],
[
"Hewitson",
"Martin",
""
],
[
"Sauter",
"Orion",
""
],
[
"Wass",
"Peter",
""
]
] | The Drag-Free and Attitude Control System is a central element of LISA technology, ensuring the very high dynamic stability of spacecraft and test masses required in order to reach the sensitivity that gravitational wave astronomy in space requires. Applying electrostatic forces on test-masses is unavoidable but should... |
1403.5160 | Mengjie Wang | Mengjie Wang, Carlos Herdeiro | Superradiant instabilities in a $D$-dimensional small
Reissner-Nordstr\"om-Anti-de Sitter black hole | 8 pages, to appear in PRD(2014) | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the superradiant instability for a charged scalar field in a
$D$-dimensional small Reissner-Nordstr\"om-Anti-de Sitter (RN-AdS) black hole.
Firstly, we solve the charged Klein-Gordon equation analytically by a matching
method. We show that the general $D$-dimensional quasinormal frequencies depend
on t... | [
{
"created": "Thu, 20 Mar 2014 14:58:27 GMT",
"version": "v1"
}
] | 2014-03-24 | [
[
"Wang",
"Mengjie",
""
],
[
"Herdeiro",
"Carlos",
""
]
] | We investigate the superradiant instability for a charged scalar field in a $D$-dimensional small Reissner-Nordstr\"om-Anti-de Sitter (RN-AdS) black hole. Firstly, we solve the charged Klein-Gordon equation analytically by a matching method. We show that the general $D$-dimensional quasinormal frequencies depend on the... |
1703.08168 | Philippe Landry | Philippe Landry | Tidal deformation of a slowly rotating material body: Interior metric
and Love numbers | 19 pages, 7 figures; updated figures and corrected typos; matches the
published version | Phys. Rev. D 95, 124058 (2017) | 10.1103/PhysRevD.95.124058 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The metric outside a compact body deformed by a quadrupolar tidal field is
universal up to its Love numbers, constants which encode the tidal response's
dependence on the body's internal structure. For a non-rotating body, the
deformed external geometry is characterized by the familiar gravitational Love
numbers $K_2... | [
{
"created": "Thu, 23 Mar 2017 17:56:14 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Jul 2017 16:53:07 GMT",
"version": "v2"
}
] | 2017-07-05 | [
[
"Landry",
"Philippe",
""
]
] | The metric outside a compact body deformed by a quadrupolar tidal field is universal up to its Love numbers, constants which encode the tidal response's dependence on the body's internal structure. For a non-rotating body, the deformed external geometry is characterized by the familiar gravitational Love numbers $K_2^{... |
2003.10781 | Jonas Pereira | Jonas P. Pereira, Micha{\l} Bejger, Nils Andersson, Fabian Gittins | Tidal deformations of hybrid stars with sharp phase transitions and
elastic crusts | 11 pages, 3 figures. Minor changes to the abstract. Accepted for
publication in ApJ | null | 10.3847/1538-4357/ab8aca | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave astronomy is expected to provide independent constraints
on neutron star properties, such as their dense matter equation of state. This
is possible with the measurements of binary components' tidal deformability,
which alter the point-particle gravitational waveforms of the late inspiral
phase of n... | [
{
"created": "Tue, 24 Mar 2020 11:29:05 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Apr 2020 09:25:00 GMT",
"version": "v2"
}
] | 2020-05-27 | [
[
"Pereira",
"Jonas P.",
""
],
[
"Bejger",
"Michał",
""
],
[
"Andersson",
"Nils",
""
],
[
"Gittins",
"Fabian",
""
]
] | Gravitational wave astronomy is expected to provide independent constraints on neutron star properties, such as their dense matter equation of state. This is possible with the measurements of binary components' tidal deformability, which alter the point-particle gravitational waveforms of the late inspiral phase of neu... |
1102.4578 | Stephen Castles | S. H. Castles | The SU(1,1)/U(1) dynamical symmetry of a family of particles in the
field of a Kerr black hole | 9 pages, 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A family of particles moving within a cone centered on a Kerr black hole is
shown to have SU(1,1)/U(1) dynamical symmetry. This symmetry is used to
identify a global time variable shared by all particles in the family. With
this time variable, Hamilton's equations for the family of particles have the
canonical form o... | [
{
"created": "Tue, 22 Feb 2011 18:48:06 GMT",
"version": "v1"
}
] | 2011-02-23 | [
[
"Castles",
"S. H.",
""
]
] | A family of particles moving within a cone centered on a Kerr black hole is shown to have SU(1,1)/U(1) dynamical symmetry. This symmetry is used to identify a global time variable shared by all particles in the family. With this time variable, Hamilton's equations for the family of particles have the canonical form of ... |
2012.08151 | Guillem Dom\`enech | Guillem Dom\`enech, Chunshan Lin and Misao Sasaki | Gravitational wave constraints on the primordial black hole dominated
early universe | Revised version. Included suppression due to the finite duration of
black hole evaporation | null | 10.1088/1475-7516/2021/04/062 | YITP-20-156 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the gravitational waves (GWs) induced by the density
fluctuations due to inhomogeneous distribution of primordial black holes (PBHs)
in the case where PBHs eventually dominate and reheat the universe by Hawking
evaporation. The initial PBH density fluctuations are isocurvature in nature.
We find that mos... | [
{
"created": "Tue, 15 Dec 2020 08:44:34 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Sep 2021 14:37:43 GMT",
"version": "v2"
}
] | 2021-09-14 | [
[
"Domènech",
"Guillem",
""
],
[
"Lin",
"Chunshan",
""
],
[
"Sasaki",
"Misao",
""
]
] | We calculate the gravitational waves (GWs) induced by the density fluctuations due to inhomogeneous distribution of primordial black holes (PBHs) in the case where PBHs eventually dominate and reheat the universe by Hawking evaporation. The initial PBH density fluctuations are isocurvature in nature. We find that most ... |
1909.08562 | Zhen Zhong | Ming Zhang, Jie Jiang, Zhen Zhong | The fastest relaxation rate of higher-dimensional
Reissner--Nordstr\"{o}m black hole | PLB published version | Physics Letters B, Volume 798 (2019) 134959 | 10.1016/j.physletb.2019.134959 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the eikonal regime, we analytically calculate quasinormal resonance
frequencies for massless scalar perturbations of the higher-dimensional
Reissner--Nordstr\"{o}m (RN) black holes. Remarkably, we find that the
higher-dimensional RN black holes coupled with the massless scalar fields have
the fastest relaxation ra... | [
{
"created": "Wed, 18 Sep 2019 16:34:06 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Oct 2019 08:32:27 GMT",
"version": "v2"
}
] | 2019-10-07 | [
[
"Zhang",
"Ming",
""
],
[
"Jiang",
"Jie",
""
],
[
"Zhong",
"Zhen",
""
]
] | In the eikonal regime, we analytically calculate quasinormal resonance frequencies for massless scalar perturbations of the higher-dimensional Reissner--Nordstr\"{o}m (RN) black holes. Remarkably, we find that the higher-dimensional RN black holes coupled with the massless scalar fields have the fastest relaxation rate... |
1808.05634 | Genly Le\'on | Genly Leon (Catolica del Norte U.), Andronikos Paliathanasis and Jorge
Luis Morales-Mart\'inez (Guanajuato U.) | The past and future dynamics of quintom dark energy models | 22 pages, 3 compound figures (13 eps files) | Eur. Phys. J. C (2018) 78:753 | 10.1140/epjc/s10052-018-6225-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the phase space of the quintom cosmologies for a class of
exponential potentials. We combine normal forms expansions and the center
manifold theory in order to describe the dynamics near equilibrium sets.
Furthermore, we construct the unstable and center manifold of the massless
scalar field cosmology motiva... | [
{
"created": "Thu, 16 Aug 2018 18:26:01 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Sep 2018 16:59:05 GMT",
"version": "v2"
}
] | 2018-09-24 | [
[
"Leon",
"Genly",
"",
"Catolica del Norte U."
],
[
"Paliathanasis",
"Andronikos",
"",
"Guanajuato U."
],
[
"Morales-Martínez",
"Jorge Luis",
"",
"Guanajuato U."
]
] | We study the phase space of the quintom cosmologies for a class of exponential potentials. We combine normal forms expansions and the center manifold theory in order to describe the dynamics near equilibrium sets. Furthermore, we construct the unstable and center manifold of the massless scalar field cosmology motivate... |
1208.3601 | Maur\'icio Richartz | Maur\'icio Richartz, Angus Prain, Silke Weinfurtner, Stefano Liberati | Superradiant scattering of dispersive fields | 31 pages, 11 figures; published in CQG | Class. Quantum Grav. 30, 085009 (2013) | 10.1088/0264-9381/30/8/085009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by analogue models of classical and quantum field theory in curved
spacetimes and their recent experimental realizations, we consider wave
scattering processes of dispersive fields exhibiting two extra degrees of
freedom. In particular, we investigate how standard superradiant scattering
processes are affec... | [
{
"created": "Fri, 17 Aug 2012 14:00:27 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Sep 2012 05:49:33 GMT",
"version": "v2"
},
{
"created": "Mon, 25 Mar 2013 23:36:56 GMT",
"version": "v3"
}
] | 2013-06-14 | [
[
"Richartz",
"Maurício",
""
],
[
"Prain",
"Angus",
""
],
[
"Weinfurtner",
"Silke",
""
],
[
"Liberati",
"Stefano",
""
]
] | Motivated by analogue models of classical and quantum field theory in curved spacetimes and their recent experimental realizations, we consider wave scattering processes of dispersive fields exhibiting two extra degrees of freedom. In particular, we investigate how standard superradiant scattering processes are affecte... |
1011.1637 | Luca Fabbri | Luca Fabbri | The most general cosmological dynamics for ELKO Matter Fields | 9 pages | Phys.Lett.B 704: 255-259, 2011 | 10.1016/j.physletb.2011.09.024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Not long ago, the definition of eigenspinors of charge-conjugation belonging
to a special Wigner class has lead to the unexpected theoretical discovery of a
form of matter with spin 1/2 and mass dimension 1, called ELKO matter field;
ELKO matter fields defined in flat spacetimes have been later extended to
curved and... | [
{
"created": "Sun, 7 Nov 2010 13:41:56 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Sep 2011 10:59:44 GMT",
"version": "v2"
}
] | 2011-10-04 | [
[
"Fabbri",
"Luca",
""
]
] | Not long ago, the definition of eigenspinors of charge-conjugation belonging to a special Wigner class has lead to the unexpected theoretical discovery of a form of matter with spin 1/2 and mass dimension 1, called ELKO matter field; ELKO matter fields defined in flat spacetimes have been later extended to curved and t... |
1802.03370 | Peter Horvathy | M. Cariglia, A. Galajinsky, G.W. Gibbons, P.A. Horvathy | Cosmological aspects of the Eisenhart-Duval lift | Minor corrections and precisions, a couple of references added. 34
pages, 3 figures. To be published in European Physical Journal C | null | 10.1140/epjc/s10052-018-5789-x | null | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A cosmological extension of the Eisenhart-Duval metric is constructed by
incorporating a cosmic scale factor and the energy-momentum tensor into the
scheme. The dynamics of the spacetime is governed the Ermakov-Milne-Pinney
equation. Killing isometries include spatial translations and rotations,
Newton--Hooke boosts ... | [
{
"created": "Fri, 9 Feb 2018 18:12:28 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Feb 2018 10:30:59 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Apr 2018 10:00:13 GMT",
"version": "v3"
}
] | 2018-05-09 | [
[
"Cariglia",
"M.",
""
],
[
"Galajinsky",
"A.",
""
],
[
"Gibbons",
"G. W.",
""
],
[
"Horvathy",
"P. A.",
""
]
] | A cosmological extension of the Eisenhart-Duval metric is constructed by incorporating a cosmic scale factor and the energy-momentum tensor into the scheme. The dynamics of the spacetime is governed the Ermakov-Milne-Pinney equation. Killing isometries include spatial translations and rotations, Newton--Hooke boosts an... |
2003.04242 | Francesco Belgiorno | F. Belgiorno, S.L. Cacciatori, A. Farahat, and A. Vigan\`o | Analogue Hawking Effect: BEC and Surface Waves | 17 pages, 1 figure. Published version. Title a bit changed in PRD | Phys. Rev. D 102, 105004 (2020) | 10.1103/PhysRevD.102.105004 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We take into account two further physical models which play an utmost
importance in the framework of Analogue Gravity. We first consider
Bose--Einstein condensates (BEC) and then surface gravity waves in water. Our
approach is based on the use of the master equation we introduced in a previous
work. A more complete a... | [
{
"created": "Mon, 9 Mar 2020 16:27:48 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Nov 2020 11:56:33 GMT",
"version": "v2"
}
] | 2020-11-25 | [
[
"Belgiorno",
"F.",
""
],
[
"Cacciatori",
"S. L.",
""
],
[
"Farahat",
"A.",
""
],
[
"Viganò",
"A.",
""
]
] | We take into account two further physical models which play an utmost importance in the framework of Analogue Gravity. We first consider Bose--Einstein condensates (BEC) and then surface gravity waves in water. Our approach is based on the use of the master equation we introduced in a previous work. A more complete ana... |
1804.09814 | Monica Forte | M\'onica Forte | The extended holographic Dark Energy cosmological models | 7 pages, no figures | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a general analytical treatment of cosmological models commanded by
three interactive fluids with arbitrary barotropic indexes. The variable
equations of state case are applicable to universes with quintessences, k
essences and holographic fluids and we pay some attention to the holographic
case. We also pr... | [
{
"created": "Wed, 25 Apr 2018 21:57:00 GMT",
"version": "v1"
}
] | 2018-04-27 | [
[
"Forte",
"Mónica",
""
]
] | We present a general analytical treatment of cosmological models commanded by three interactive fluids with arbitrary barotropic indexes. The variable equations of state case are applicable to universes with quintessences, k essences and holographic fluids and we pay some attention to the holographic case. We also prop... |
1111.6526 | Jos\'e Cleriston Campos de Souza | A. B. Pavan, Elisa G. M. Ferreira, Sandro M. R. Micheletti, J. C. C.
de Souza and E. Abdalla | Exact cosmological solutions of models with an interacting dark sector | 14 pages, 4 figures;v.4: published version | Phys. Rev. D 86, 103521 (2012) | 10.1103/PhysRevD.86.103521 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we extend the first order formalism for cosmological models that
present an interaction between a fermionic and a scalar field. Cosmological
exact solutions describing universes filled with interacting dark energy and
dark matter have been obtained. Viable cosmological solutions with an early
period of d... | [
{
"created": "Mon, 28 Nov 2011 17:27:13 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Sep 2012 18:27:42 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Oct 2012 20:40:02 GMT",
"version": "v3"
},
{
"created": "Wed, 21 Nov 2012 18:14:55 GMT",
"version": "v4"
}
] | 2012-11-22 | [
[
"Pavan",
"A. B.",
""
],
[
"Ferreira",
"Elisa G. M.",
""
],
[
"Micheletti",
"Sandro M. R.",
""
],
[
"de Souza",
"J. C. C.",
""
],
[
"Abdalla",
"E.",
""
]
] | In this work we extend the first order formalism for cosmological models that present an interaction between a fermionic and a scalar field. Cosmological exact solutions describing universes filled with interacting dark energy and dark matter have been obtained. Viable cosmological solutions with an early period of dec... |
1601.02174 | Norichika Sago | Norichika Sago, Ryuichi Fujita, Hiroyuki Nakano | Accuracy of the Post-Newtonian Approximation for Extreme-Mass Ratio
Inspirals from Black-hole Perturbation Approach | 8 pages, 6 figures, minor modifications to match the published
version in PRD | Phys. Rev. D 93, 104023 (2016) | 10.1103/PhysRevD.93.104023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the accuracy of the post-Newtonian (PN) approximation and its
region of validity for quasi-circular orbits of a point particle in the Kerr
spacetime, by using an analytically known highest post-Newtonian order
gravitational energy flux and accurate numerical results in the black hole
perturbation approach.... | [
{
"created": "Sun, 10 Jan 2016 03:06:41 GMT",
"version": "v1"
},
{
"created": "Wed, 25 May 2016 22:54:50 GMT",
"version": "v2"
}
] | 2016-05-27 | [
[
"Sago",
"Norichika",
""
],
[
"Fujita",
"Ryuichi",
""
],
[
"Nakano",
"Hiroyuki",
""
]
] | We revisit the accuracy of the post-Newtonian (PN) approximation and its region of validity for quasi-circular orbits of a point particle in the Kerr spacetime, by using an analytically known highest post-Newtonian order gravitational energy flux and accurate numerical results in the black hole perturbation approach. I... |
1603.04075 | Enrico Barausse | Enrico Barausse, Nicolas Yunes and Katie Chamberlain | Theory-Agnostic Constraints on Black-Hole Dipole Radiation with
Multi-Band Gravitational-Wave Astrophysics | 6 pages, 1 figure; slight changes to text and figure (which now uses
design aLIGO instead of current aLIGO for the combined eLISA-aLIGO
costraints), conclusions unchanged. Matches version accepted by PRL | Phys. Rev. Lett. 116, 241104 (2016) | 10.1103/PhysRevLett.116.241104 | null | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The aLIGO detection of the black-hole binary GW150914 opened a new era for
probing extreme gravity. Many gravity theories predict the emission of dipole
gravitational radiation by binaries. This is excluded to high accuracy in
binary pulsars, but entire classes of theories predict this effect
predominantly (or only) ... | [
{
"created": "Sun, 13 Mar 2016 21:09:45 GMT",
"version": "v1"
},
{
"created": "Wed, 11 May 2016 09:10:47 GMT",
"version": "v2"
}
] | 2016-06-22 | [
[
"Barausse",
"Enrico",
""
],
[
"Yunes",
"Nicolas",
""
],
[
"Chamberlain",
"Katie",
""
]
] | The aLIGO detection of the black-hole binary GW150914 opened a new era for probing extreme gravity. Many gravity theories predict the emission of dipole gravitational radiation by binaries. This is excluded to high accuracy in binary pulsars, but entire classes of theories predict this effect predominantly (or only) in... |
0905.3212 | Muhammad Sharif | M. Sharif and Bushra Majeed | Teleparallel Killing Vectors of Spherically Symmetric Spacetimes | 14 pages, accepted for publication in Communications in Theoretical
Physics | Commun. Theor. Phys. 52(2009)435-440 | 10.1088/0253-6102/52/3/11 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, Killing vectors of spherically spacetimes have been evaluated
in the context of teleparallel theory of gravitation. Further, we investigate
the Killing vectors of the Friedmann metrics. It is found that for static
spherically spacetimes the number of Killing vectors turn out to be
\emph{seven} while fo... | [
{
"created": "Wed, 20 May 2009 02:21:04 GMT",
"version": "v1"
}
] | 2015-05-13 | [
[
"Sharif",
"M.",
""
],
[
"Majeed",
"Bushra",
""
]
] | In this paper, Killing vectors of spherically spacetimes have been evaluated in the context of teleparallel theory of gravitation. Further, we investigate the Killing vectors of the Friedmann metrics. It is found that for static spherically spacetimes the number of Killing vectors turn out to be \emph{seven} while for ... |
gr-qc/0311066 | Daniele Oriti | Daniele Oriti | Spin Foam Models of Quantum Spacetime | 337 pages, 31 figures; Ph.D. Thesis, University of Cambridge | null | null | null | gr-qc | null | Spin foam models are a new approach to a formulation of quantum gravity which
is fully background independent, non-perturbative, and covariant, in the spirit
of path integral formulations of quantum field theory. In this thesis we
describe in details the general ideas and formalism of spin foam models, and
review man... | [
{
"created": "Thu, 20 Nov 2003 15:16:29 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Oriti",
"Daniele",
""
]
] | Spin foam models are a new approach to a formulation of quantum gravity which is fully background independent, non-perturbative, and covariant, in the spirit of path integral formulations of quantum field theory. In this thesis we describe in details the general ideas and formalism of spin foam models, and review many ... |
1312.5553 | Felipe Faria | F. F. Faria | Massive conformal gravity | v2: 6 pages, some missing terms were added in the field equation (7).
v3: 9 pages, several improvements to match the published version | Advances in High Energy Physics, vol. 2014, Article ID 520259, 4
pages, 2014 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we construct a massive theory of gravity that is invariant
under conformal transformations. The massive action of the theory depend on the
metric tensor and a scalar field, which are considered as the only field
variables. We find the vacuum field equations of the theory and the solution of
its Newton... | [
{
"created": "Thu, 19 Dec 2013 14:05:22 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Jan 2014 20:00:10 GMT",
"version": "v2"
},
{
"created": "Mon, 15 Dec 2014 10:34:41 GMT",
"version": "v3"
}
] | 2014-12-16 | [
[
"Faria",
"F. F.",
""
]
] | In this article we construct a massive theory of gravity that is invariant under conformal transformations. The massive action of the theory depend on the metric tensor and a scalar field, which are considered as the only field variables. We find the vacuum field equations of the theory and the solution of its Newtonia... |
2305.00686 | Thanasis Karakasis | Thanasis Karakasis, George Koutsoumbas, Eleftherios Papantonopoulos | Black Holes with Scalar Hair in Three Dimensions | Accepted for publication in PRD | null | 10.1103/PhysRevD.107.124047 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Three - dimensional static and spinning black hole solutions of the
Einstein-Klein-Gordon system are obtained for a particular scalar field
configuration. At large distances, and for small scalar field, the solutions
reduce to the BTZ black hole. The scalar field dresses the black hole with
secondary scalar hair, sin... | [
{
"created": "Mon, 1 May 2023 06:57:58 GMT",
"version": "v1"
},
{
"created": "Tue, 2 May 2023 09:52:32 GMT",
"version": "v2"
},
{
"created": "Mon, 12 Jun 2023 20:06:38 GMT",
"version": "v3"
}
] | 2023-07-11 | [
[
"Karakasis",
"Thanasis",
""
],
[
"Koutsoumbas",
"George",
""
],
[
"Papantonopoulos",
"Eleftherios",
""
]
] | Three - dimensional static and spinning black hole solutions of the Einstein-Klein-Gordon system are obtained for a particular scalar field configuration. At large distances, and for small scalar field, the solutions reduce to the BTZ black hole. The scalar field dresses the black hole with secondary scalar hair, since... |
1712.06412 | Ramil Izmailov | R.Kh. Karimov, R.N. Izmailov, G.M. Garipova and K.K. Nandi | Sagnac delay in the Kerr-dS space-time: Implications for Mach's
principle | 15 pages. arXiv admin note: text overlap with arXiv:1709.08413 | Eur. Phys. J. Plus (2018) 133: 44 | 10.1140/epjp/i2018-11919-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Relativistic twin paradox can have important implications for Mach's
principle. It has been recently argued that the behavior of the time asynchrony
(different aging of twins) between two flying clocks along closed loops can be
attributed to the existence of an absolute spacetime, which makes Mach's
principle unfeasi... | [
{
"created": "Mon, 18 Dec 2017 14:21:05 GMT",
"version": "v1"
}
] | 2018-04-03 | [
[
"Karimov",
"R. Kh.",
""
],
[
"Izmailov",
"R. N.",
""
],
[
"Garipova",
"G. M.",
""
],
[
"Nandi",
"K. K.",
""
]
] | Relativistic twin paradox can have important implications for Mach's principle. It has been recently argued that the behavior of the time asynchrony (different aging of twins) between two flying clocks along closed loops can be attributed to the existence of an absolute spacetime, which makes Mach's principle unfeasibl... |
1205.0469 | Nangue Alexis Alex | Norbert Noutchegueme and Alexis Nangue | Einstein-Maxwell-Massive Scalar Field System in 3+1 formulation on
Bianchi Spacetimes type I-VIII | 45 pages | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Global existence to the coupled Einstein-Maxwell-Massive Scalar Field system
which rules the dynamics of a kind of charged pure matter in the presence of a
massive scalar field is proved, in Bianchi I-VIII spacetimes; asymptotic
behaviour, geodesic completeness, energy conditions are investigated in the
case of a cos... | [
{
"created": "Wed, 2 May 2012 15:44:21 GMT",
"version": "v1"
}
] | 2012-05-03 | [
[
"Noutchegueme",
"Norbert",
""
],
[
"Nangue",
"Alexis",
""
]
] | Global existence to the coupled Einstein-Maxwell-Massive Scalar Field system which rules the dynamics of a kind of charged pure matter in the presence of a massive scalar field is proved, in Bianchi I-VIII spacetimes; asymptotic behaviour, geodesic completeness, energy conditions are investigated in the case of a cosmo... |
1503.03439 | Saibal Ray | Piyali Bhar, Farook Rahaman, Saibal Ray and Vikram Chatterjee | Possibility of higher dimensional anisotropic compact star | 21 pages, 6 figures, 1 table, Substantial modification in the whole
manuscript, Accepted in Eur. Phys. J. C | null | 10.1140/epjc/s10052-015-3375-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have provided here a new class of interior solutions for anisotropic stars
admitting conformal motion in higher dimensional noncommutative spacetime. The
Einstein fields equations are solved by choosing a particular density
distribution function of Lorentzian type \cite{Nozari} under noncommutative
geometry. Sever... | [
{
"created": "Wed, 29 Oct 2014 11:21:09 GMT",
"version": "v1"
},
{
"created": "Thu, 14 May 2015 06:50:45 GMT",
"version": "v2"
}
] | 2015-05-15 | [
[
"Bhar",
"Piyali",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Ray",
"Saibal",
""
],
[
"Chatterjee",
"Vikram",
""
]
] | We have provided here a new class of interior solutions for anisotropic stars admitting conformal motion in higher dimensional noncommutative spacetime. The Einstein fields equations are solved by choosing a particular density distribution function of Lorentzian type \cite{Nozari} under noncommutative geometry. Several... |
2201.00652 | Erik Lentz | Erik W. Lentz | Hyper-Fast Positive Energy Warp Drives | 8 pages, 1 figure; Contribution to the Sixteenth Marcel Grossman
Conference (MG16, Rome, Italy, July 2021) | null | null | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Solitons in space-time capable of transporting time-like observers at
superluminal speeds have long been tied to violations of the weak, strong, and
dominant energy conditions of general relativity. This trend was recently
broken by a new approach that identified soliton solutions capable of
superluminal travel while... | [
{
"created": "Thu, 30 Dec 2021 18:50:01 GMT",
"version": "v1"
}
] | 2022-01-04 | [
[
"Lentz",
"Erik W.",
""
]
] | Solitons in space-time capable of transporting time-like observers at superluminal speeds have long been tied to violations of the weak, strong, and dominant energy conditions of general relativity. This trend was recently broken by a new approach that identified soliton solutions capable of superluminal travel while b... |
gr-qc/0612153 | Alberto Lobo | Alberto Lobo, Miquel Nofrarias, Juan Ramos-Castro, Josep Sanjuan,
Aleix Conchillo, Jose Antonio Ortega, Xevi Xirgu, Henrique Araujo, Cesar
Boatella, Mokhtar Chmeissani, Catia Grimani, Carles Puigdengoles, Peter Wass,
Enrique Garcia-Berro, Sergi Garcia, Lluis Martinez and Gustau Montero | In-flight Diagnostics in LISA Pathfinder | 7 pages, 1 figure, presented at the 6th LISA Symposium, Goddard Space
Flight Center, June 2006 | AIPConf.Proc.873:522-528,2006 | 10.1063/1.2405094 | null | gr-qc | null | LISA PathFinder (LPF) will be flown with the objective to test in space key
technologies for LISA. However its sensitivity goals are, for good reason, one
order of magnitude less than those which LISA will have to meet, both in
drag-free and optical metrology requirements, and in the observation frequency
band. While... | [
{
"created": "Sat, 23 Dec 2006 10:58:51 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Lobo",
"Alberto",
""
],
[
"Nofrarias",
"Miquel",
""
],
[
"Ramos-Castro",
"Juan",
""
],
[
"Sanjuan",
"Josep",
""
],
[
"Conchillo",
"Aleix",
""
],
[
"Ortega",
"Jose Antonio",
""
],
[
"Xirgu",
"Xevi",
""
],... | LISA PathFinder (LPF) will be flown with the objective to test in space key technologies for LISA. However its sensitivity goals are, for good reason, one order of magnitude less than those which LISA will have to meet, both in drag-free and optical metrology requirements, and in the observation frequency band. While t... |
1210.1787 | Steffen Gielen | Steffen Gielen | Spontaneous breaking of Lorentz symmetry for canonical gravity | 8 pages, contribution to the proceedings of the conference
"Relativity and Gravitation - 100 years after Einstein in Prague"; v2: added
heading "References" | Springer Proceedings in Physics 57 (2014) 497-503 | 10.1007/978-3-319-06761-2_70 | pi-qg-300 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the Ashtekar-Barbero formulation of canonical general relativity based on
an SU(2) connection, Lorentz covariance is a subtle issue which has been the
focus of some debate. Here we present a Lorentz covariant formulation
generalising the notion of a foliation of spacetime to a field of local
observers which specif... | [
{
"created": "Fri, 5 Oct 2012 15:31:25 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Oct 2012 02:35:15 GMT",
"version": "v2"
}
] | 2014-06-18 | [
[
"Gielen",
"Steffen",
""
]
] | In the Ashtekar-Barbero formulation of canonical general relativity based on an SU(2) connection, Lorentz covariance is a subtle issue which has been the focus of some debate. Here we present a Lorentz covariant formulation generalising the notion of a foliation of spacetime to a field of local observers which specify ... |
2003.11587 | Graeme Milton | Graeme W. Milton | A possible explanation of dark matter and dark energy involving a vector
torsion field | 20 pages, 4 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | A simple gravitational model with torsion is studied, and it is suggested
that it could explain the dark matter and dark energy in the universe. It can
be reinterpreted as a model using the Einstein gravitational equations where
spacetime has regions filled with a perfect fluid with negative energy
(pressure) and pos... | [
{
"created": "Wed, 25 Mar 2020 19:09:42 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Mar 2020 17:56:53 GMT",
"version": "v2"
},
{
"created": "Fri, 17 Apr 2020 18:53:14 GMT",
"version": "v3"
},
{
"created": "Sun, 21 Mar 2021 20:28:48 GMT",
"version": "v4"
},
{
"c... | 2022-03-28 | [
[
"Milton",
"Graeme W.",
""
]
] | A simple gravitational model with torsion is studied, and it is suggested that it could explain the dark matter and dark energy in the universe. It can be reinterpreted as a model using the Einstein gravitational equations where spacetime has regions filled with a perfect fluid with negative energy (pressure) and posit... |
2004.03947 | Sergey L Cherkas | Sergey L. Cherkas and Vladimir L. Kalashnikov | Eicheons instead of Black holes | 18 pages. The term "eicheon" refers to the fundamental work
"Gravitation und Elektrizitat" by Hermann Weyl where the concept of gauge
field theory ("Eichfeldtheorie") was invented for the first time | Phys. Scr. 95 (2020) 085009 | 10.1088/1402-4896/aba3aa | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new spherically-symmetric solution for a gravitational field is found in
the conformally-unimodular metric. It is shown, that the surface of the black
hole horizon in the standard Schwarzschild metric can be squeezed to a point by
converting coordinates to the conformally-unimodular metric. In this new
metric, ther... | [
{
"created": "Wed, 8 Apr 2020 11:42:35 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jun 2020 08:16:39 GMT",
"version": "v2"
},
{
"created": "Sat, 11 Jul 2020 10:20:54 GMT",
"version": "v3"
}
] | 2020-08-24 | [
[
"Cherkas",
"Sergey L.",
""
],
[
"Kalashnikov",
"Vladimir L.",
""
]
] | A new spherically-symmetric solution for a gravitational field is found in the conformally-unimodular metric. It is shown, that the surface of the black hole horizon in the standard Schwarzschild metric can be squeezed to a point by converting coordinates to the conformally-unimodular metric. In this new metric, there ... |
2310.09539 | Gabriele Gionti S.J. | Gabriele Gionti S.J., Matteo Galaverni | On the canonical equivalence between Jordan and Einstein frames | 18 pages, 2 figures, references added; accepted for publication | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A longstanding issue is the classical equivalence between the Jordan and the
Einstein frames, which is considered just a field redefinition of the metric
tensor and the scalar field. In this work, based on the previous result that
the Hamiltonian transformations from the Jordan to the Einstein frame are not
canonical... | [
{
"created": "Sat, 14 Oct 2023 09:27:51 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Feb 2024 11:04:14 GMT",
"version": "v2"
}
] | 2024-02-27 | [
[
"J.",
"Gabriele Gionti S.",
""
],
[
"Galaverni",
"Matteo",
""
]
] | A longstanding issue is the classical equivalence between the Jordan and the Einstein frames, which is considered just a field redefinition of the metric tensor and the scalar field. In this work, based on the previous result that the Hamiltonian transformations from the Jordan to the Einstein frame are not canonical o... |
1308.2385 | Christian Wiesendanger | C. Wiesendanger | General Relativity as the Classical Limit of the Renormalizable Gauge
Theory of Volume Preserving Diffeomorphisms | 16 pages | null | 10.4236/jmp.2014.510098 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The different roles and natures of spacetime appearing in a quantum field
theory and in classical physics are analyzed implying that a quantum theory of
gravitation is not necessarily a quantum theory of curved spacetime. Developing
an alternative approach to quantum gravity starts with the postulate that
inertial an... | [
{
"created": "Sun, 11 Aug 2013 12:10:16 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Oct 2013 14:14:39 GMT",
"version": "v2"
}
] | 2015-06-16 | [
[
"Wiesendanger",
"C.",
""
]
] | The different roles and natures of spacetime appearing in a quantum field theory and in classical physics are analyzed implying that a quantum theory of gravitation is not necessarily a quantum theory of curved spacetime. Developing an alternative approach to quantum gravity starts with the postulate that inertial and ... |
1908.02595 | Valerio Faraoni | Jeremy C\^ot\'e, Marianne Lapierre-L\'eonard, and Valerio Faraoni | Spacetime mappings of the Brown-York quasilocal energy | 6 pages, to appear in Eur. Phys. J. C | null | 10.1140/epjc/s10052-019-7205-6 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In several areas of theoretical physics it is useful to know how a quasilocal
energy transforms under conformal rescalings or generalized Kerr-Schild
mappings. We derive the transformation properties of the Brown-York quasilocal
energy in spherical symmetry and we contrast them with those of the
Misner-Sharp-Hernande... | [
{
"created": "Wed, 7 Aug 2019 12:43:11 GMT",
"version": "v1"
}
] | 2019-09-04 | [
[
"Côté",
"Jeremy",
""
],
[
"Lapierre-Léonard",
"Marianne",
""
],
[
"Faraoni",
"Valerio",
""
]
] | In several areas of theoretical physics it is useful to know how a quasilocal energy transforms under conformal rescalings or generalized Kerr-Schild mappings. We derive the transformation properties of the Brown-York quasilocal energy in spherical symmetry and we contrast them with those of the Misner-Sharp-Hernandez ... |
0907.3163 | Luisa T. Buchman | Luisa T. Buchman, Harald P. Pfeiffer, and James M. Bardeen | Black hole initial data on hyperboloidal slices | version for publication in Phys. Rev. D | Phys.Rev.D80:084024,2009 | 10.1103/PhysRevD.80.084024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize Bowen-York black hole initial data to hyperboloidal constant
mean curvature slices which extend to future null infinity. We solve this
initial value problem numerically for several cases, including unequal mass
binary black holes with spins and boosts. The singularity at null infinity in
the Hamiltonian... | [
{
"created": "Fri, 17 Jul 2009 23:16:04 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Oct 2009 05:39:37 GMT",
"version": "v2"
}
] | 2009-11-05 | [
[
"Buchman",
"Luisa T.",
""
],
[
"Pfeiffer",
"Harald P.",
""
],
[
"Bardeen",
"James M.",
""
]
] | We generalize Bowen-York black hole initial data to hyperboloidal constant mean curvature slices which extend to future null infinity. We solve this initial value problem numerically for several cases, including unequal mass binary black holes with spins and boosts. The singularity at null infinity in the Hamiltonian c... |
1510.05055 | Eric Greenwood | Eric Greenwood | Classical and Quantum Equations of Motion of an n-dimesional BTZ Black
Hole | 10 pages. arXiv admin note: text overlap with arXiv:0912.1860 | null | 10.1016/j.physletb.2016.03.041 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the gravitational collapse of a non-rotating $n$-dimensional
BTZ black hole in AdS space in the context of both classical and quantum
mechanics. This is done by first deriving the conserved mass of a "spherically"
symmetric domain wall, which is taken as the classical Hamiltonian of the black
hole. Upo... | [
{
"created": "Sat, 17 Oct 2015 00:45:15 GMT",
"version": "v1"
}
] | 2016-04-20 | [
[
"Greenwood",
"Eric",
""
]
] | We investigate the gravitational collapse of a non-rotating $n$-dimensional BTZ black hole in AdS space in the context of both classical and quantum mechanics. This is done by first deriving the conserved mass of a "spherically" symmetric domain wall, which is taken as the classical Hamiltonian of the black hole. Upon ... |
0912.2461 | L. C. Garcia de Andrade | L Garcia de Andrade | Mean-field cosmological dynamo curvature vs turbulence spectrum in
Riemannian space | Departamento de Fisica Teorica-IF-UERJ-Rio-RJ-Brasil | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Previous attempts for building a cosmic dynamo including preheating in
inflationary universes [Bassett et al Phys Rev (2001)] has not included mean
field dynamos. Here, a mean field dynamo in cosmic scales on a Riemannian
spatial cosmological section background, is set up. When magnetic fields and
flow velocities are... | [
{
"created": "Sat, 12 Dec 2009 23:08:07 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Dec 2009 02:33:50 GMT",
"version": "v2"
},
{
"created": "Thu, 31 Dec 2009 02:41:18 GMT",
"version": "v3"
}
] | 2009-12-31 | [
[
"de Andrade",
"L Garcia",
""
]
] | Previous attempts for building a cosmic dynamo including preheating in inflationary universes [Bassett et al Phys Rev (2001)] has not included mean field dynamos. Here, a mean field dynamo in cosmic scales on a Riemannian spatial cosmological section background, is set up. When magnetic fields and flow velocities are p... |
gr-qc/9604001 | Alan Rendall | Alan D. Rendall | An introduction to the Einstein-Vlasov system | 36 pages. Lectures given at the Banach centre, Warsaw, March 1996 | null | null | AEI 005 | gr-qc | null | These lectures are designed to provide a general introduction to the
Einstein-Vlasov system and to the global Cauchy problem for these equations. To
start with some general facts are collected and a local existence theorem for
the Cauchy problem stated. Next the case of spherically symmetric
asymptotically flat solut... | [
{
"created": "Mon, 1 Apr 1996 08:54:09 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rendall",
"Alan D.",
""
]
] | These lectures are designed to provide a general introduction to the Einstein-Vlasov system and to the global Cauchy problem for these equations. To start with some general facts are collected and a local existence theorem for the Cauchy problem stated. Next the case of spherically symmetric asymptotically flat solutio... |
1007.1358 | M. D. Maia | M. D. Maia | Gravitational Waves from Coalescing Binary Sources | 4 pages, awarded a honorable mention from the Gravity Research
Foundation 2010 | Int.J.Mod.Phys.D19:2295-2298,2010 | 10.1142/S0218271810018499 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Coalescing binary systems (eg pulsars, neutron stars and black holes) are the
most likely sources of gravitational radiation, yet to be detected on or near
Earth, where the local gravitational field is negligible and the Poincar\'e
symmetry rules. On the other hand, the general theory of gravitational waves
emitted b... | [
{
"created": "Thu, 8 Jul 2010 12:44:30 GMT",
"version": "v1"
}
] | 2011-01-25 | [
[
"Maia",
"M. D.",
""
]
] | Coalescing binary systems (eg pulsars, neutron stars and black holes) are the most likely sources of gravitational radiation, yet to be detected on or near Earth, where the local gravitational field is negligible and the Poincar\'e symmetry rules. On the other hand, the general theory of gravitational waves emitted by ... |
gr-qc/0210088 | Makoto Narita | Makoto Narita | On the existence of global solutions for $T^{3}$-Gowdy spacetimes with
stringy matter | 10 pages, to appear in Classical and Quantum Gravity | Class.Quant.Grav. 19 (2002) 6279-6288 | 10.1088/0264-9381/19/24/301 | null | gr-qc math-ph math.AP math.MP | null | We show a global existence theorem for Einstein-matter equations of
$T^{3}$-Gowdy symmetric spacetimes with stringy matter. The areal time
coordinate is used. It is shown that this spacetime has a crushing singularity
into the past. From these results we can show that the spacetime is foliated by
compact hypersurface... | [
{
"created": "Fri, 25 Oct 2002 09:58:30 GMT",
"version": "v1"
}
] | 2022-05-04 | [
[
"Narita",
"Makoto",
""
]
] | We show a global existence theorem for Einstein-matter equations of $T^{3}$-Gowdy symmetric spacetimes with stringy matter. The areal time coordinate is used. It is shown that this spacetime has a crushing singularity into the past. From these results we can show that the spacetime is foliated by compact hypersurfaces ... |
1202.2788 | Francesco Salemi | the LIGO Scientific Collaboration, the Virgo Collaboration: J. Abadie,
B. P. Abbott, R. Abbott, T. D. Abbott, M. Abernathy, T. Accadia, F. Acernese,
C. Adams, R. Adhikari, C. Affeldt, M. Agathos, K. Agatsuma, P. Ajith, B.
Allen, E. Amador Ceron, D. Amariutei, S. B. Anderson, W. G. Anderson, K.
Arai, M. A. Arain... | All-sky search for gravitational-wave bursts in the second joint
LIGO-Virgo run | 15 pages, 7 figures: data for plots and archived public version at
https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=70814&version=19, see
also the public announcement at
http://www.ligo.org/science/Publication-S6BurstAllSky/ | null | 10.1103/PhysRevD.85.122007 | LIGO-P1100118 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present results from a search for gravitational-wave bursts in the data
collected by the LIGO and Virgo detectors between July 7, 2009 and October 20,
2010: data are analyzed when at least two of the three LIGO-Virgo detectors are
in coincident operation, with a total observation time of 207 days. The
analysis sea... | [
{
"created": "Mon, 13 Feb 2012 17:04:22 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Feb 2012 13:12:44 GMT",
"version": "v2"
},
{
"created": "Fri, 20 Apr 2012 12:13:33 GMT",
"version": "v3"
}
] | 2013-05-30 | [
[
"the LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abadie",
"J.",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Abernathy",
"M.",
... | We present results from a search for gravitational-wave bursts in the data collected by the LIGO and Virgo detectors between July 7, 2009 and October 20, 2010: data are analyzed when at least two of the three LIGO-Virgo detectors are in coincident operation, with a total observation time of 207 days. The analysis searc... |
gr-qc/0104025 | David Apsel | David Apsel | Pulsars and Redshifts | 3 pages no figures | null | null | null | gr-qc astro-ph | null | Gravitational redshifts of neutron stars have a theoretical upper limit of
z=0.62. Also, it is generally believed that neutron stars have magnetic fields
on the order of ten to the twelfth to ten to the thirteenth G. A previously
predicted electromagnetic time dilation effect has been shown to correctly
predict decay... | [
{
"created": "Mon, 9 Apr 2001 14:34:55 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Apsel",
"David",
""
]
] | Gravitational redshifts of neutron stars have a theoretical upper limit of z=0.62. Also, it is generally believed that neutron stars have magnetic fields on the order of ten to the twelfth to ten to the thirteenth G. A previously predicted electromagnetic time dilation effect has been shown to correctly predict decay l... |
gr-qc/0609003 | Reinoud Slagter | Reinoud J. Slagter | On A 5-Dimensional Spinning Cosmic String | 15 pages 32 figures. Improvement of numerical solutions | null | null | null | gr-qc | null | We present a numerical solution of a stationary 5-dimensional spinning cosmic
string in the Einstein-Yang-Mills (EYM) model, where the extra bulk coordinate
$\psi$ is periodic. It turns out that when $g_{\psi\psi}$ approaches zero,
i.e., a closed time-like curve (CTC) would appear, the solution becomes
singular. When... | [
{
"created": "Thu, 31 Aug 2006 21:55:05 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Mar 2008 09:58:06 GMT",
"version": "v2"
}
] | 2008-03-03 | [
[
"Slagter",
"Reinoud J.",
""
]
] | We present a numerical solution of a stationary 5-dimensional spinning cosmic string in the Einstein-Yang-Mills (EYM) model, where the extra bulk coordinate $\psi$ is periodic. It turns out that when $g_{\psi\psi}$ approaches zero, i.e., a closed time-like curve (CTC) would appear, the solution becomes singular. When a... |
gr-qc/9605022 | Alan Rendall | Alan D. Rendall | Existence of constant mean curvature foliations in spacetimes with
two-dimensional local symmetry | 22 pages | Commun.Math.Phys. 189 (1997) 145-164 | 10.1007/s002200050194 | null | gr-qc dg-ga math.DG | null | It is shown that in a class of maximal globally hyperbolic spacetimes
admitting two local Killing vectors, the past (defined with respect to an
appropriate time orientation) of any compact constant mean curvature
hypersurface can be covered by a foliation of compact constant mean curvature
hypersurfaces. Moreover, th... | [
{
"created": "Fri, 10 May 1996 11:52:01 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Rendall",
"Alan D.",
""
]
] | It is shown that in a class of maximal globally hyperbolic spacetimes admitting two local Killing vectors, the past (defined with respect to an appropriate time orientation) of any compact constant mean curvature hypersurface can be covered by a foliation of compact constant mean curvature hypersurfaces. Moreover, the ... |
2203.14866 | Genly Le\'on | Genly Leon (Catolica del Norte U. and DUT, Durban), Andronikos
Paliathanasis (DUT, Durban, and Chile Austral U., Valdivia), Emmanuel N.
Saridakis (Athens Observ. and USTC, Hefei and CUST, SKLPDE and Hefei, CUST),
and Spyros Basilakos (Athens Observ., Athens Academy and European University
Cyprus) | Unified dark sectors in scalar-torsion theories of gravity | 12 pages, 4 figures | null | 10.1103/PhysRevD.106.024055 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a unified description of the matter and dark energy epochs, using
a class of scalar-torsion theories. We provide a Hamiltonian description, and
by applying Noether's theorem and by requiring the field equations to admit
linear-in-momentum conservation laws we obtain two specific classes of
scalar-field pot... | [
{
"created": "Mon, 28 Mar 2022 16:14:27 GMT",
"version": "v1"
}
] | 2022-08-17 | [
[
"Leon",
"Genly",
"",
"Catolica del Norte U. and DUT, Durban"
],
[
"Paliathanasis",
"Andronikos",
"",
"DUT, Durban, and Chile Austral U., Valdivia"
],
[
"Saridakis",
"Emmanuel N.",
"",
"Athens Observ. and USTC, Hefei and CUST, SKLPDE and Hefei, CUST"
],
[... | We present a unified description of the matter and dark energy epochs, using a class of scalar-torsion theories. We provide a Hamiltonian description, and by applying Noether's theorem and by requiring the field equations to admit linear-in-momentum conservation laws we obtain two specific classes of scalar-field poten... |
2403.13608 | Yong-Wan Kim | Soon-Tae Hong, Yong-Wan Kim, Young-Jai Park | Tidal effects based on GUP-induced effective metric | 13 pages, 9 figures, version to appear in Communications in
Theoretical Physics | null | 10.1088/1572-9494/ad51f0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study tidal forces in the Schwarzschild black hole whose
metric includes explicitly a generalized uncertainty principle (GUP) effect. We
also investigate interesting features of the geodesic equations and tidal
effects dependent on the GUP parameter $\alpha$ related to a minimum length.
Then, by sol... | [
{
"created": "Wed, 20 Mar 2024 13:59:23 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Jun 2024 07:53:47 GMT",
"version": "v2"
}
] | 2024-06-04 | [
[
"Hong",
"Soon-Tae",
""
],
[
"Kim",
"Yong-Wan",
""
],
[
"Park",
"Young-Jai",
""
]
] | In this paper, we study tidal forces in the Schwarzschild black hole whose metric includes explicitly a generalized uncertainty principle (GUP) effect. We also investigate interesting features of the geodesic equations and tidal effects dependent on the GUP parameter $\alpha$ related to a minimum length. Then, by solvi... |
1307.1422 | Richard Woodard | P. J. Mora (Florida), N. C. Tsamis (Crete) and R. P. Woodard (Florida) | Hartree Approximation to the One Loop Quantum Gravitational Correction
to the Graviton Mode Function on de Sitter | 23 pages, uses LaTeX2e, version 2 expanded (by 7 pages) for
publication to define the effective mode equation and compare the exact one
loop result for it with the Hartree approximation | JCAP 10 (2013) 018 | 10.1088/1475-7516/2013/10/018 | UFIFT-QG-13-04 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the Hartree approximation to the Einstein equation on de Sitter
background to solve for the one loop correction to the graviton mode function.
This should give a reasonable approximation to how the ensemble of inflationary
gravitons affects a single external graviton. At late times we find that the
one loop co... | [
{
"created": "Thu, 4 Jul 2013 17:34:57 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Oct 2013 23:19:06 GMT",
"version": "v2"
}
] | 2013-10-15 | [
[
"Mora",
"P. J.",
"",
"Florida"
],
[
"Tsamis",
"N. C.",
"",
"Crete"
],
[
"Woodard",
"R. P.",
"",
"Florida"
]
] | We use the Hartree approximation to the Einstein equation on de Sitter background to solve for the one loop correction to the graviton mode function. This should give a reasonable approximation to how the ensemble of inflationary gravitons affects a single external graviton. At late times we find that the one loop corr... |
2306.15486 | Boran Yesilyurt | C. Litos, R. P. Woodard, B. Yesilyurt | Large Inflationary Logarithms in a Nontrivial Nonlinear Sigma Model | 17 pages, 7 figures, uses LaTex 2e, Version 2 revised for publication
with 7 figures and length of 19 pages | Phys. Rev. D108 (2023) 065001 | 10.1103/PhysRevD.108.065001 | UFIFT-QG-23-07 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Loops of inflationary gravitons are known to induce large temporal and
spatial logarithms which can cause perturbation theory to break down. Nonlinear
sigma models possess the same kind of derivative interactions and induce the
same sorts of large logarithms, without the complicated index structure and
potential gaug... | [
{
"created": "Tue, 27 Jun 2023 14:08:23 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Sep 2023 02:25:40 GMT",
"version": "v2"
}
] | 2023-09-11 | [
[
"Litos",
"C.",
""
],
[
"Woodard",
"R. P.",
""
],
[
"Yesilyurt",
"B.",
""
]
] | Loops of inflationary gravitons are known to induce large temporal and spatial logarithms which can cause perturbation theory to break down. Nonlinear sigma models possess the same kind of derivative interactions and induce the same sorts of large logarithms, without the complicated index structure and potential gauge ... |
1708.01742 | Nan Li | Ze-Wei Zhao, Chun-Kai Yu, Nan Li | The black ring entropy from the Weyl tensor | 9 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A black ring is an asymptotically flat vacuum solution of the Einstein
equations with an event horizon of topology $S^1\times S^2$. A connection
between the black ring entropy and its Weyl tensor $C_{\mu\nu\lambda\rho}$ is
explored by interpreting the Weyl scalar invariant $C_{\mu\nu\lambda\rho}
C^{\mu\nu\lambda\rho}... | [
{
"created": "Sat, 5 Aug 2017 09:41:23 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Aug 2018 02:07:14 GMT",
"version": "v2"
}
] | 2018-08-08 | [
[
"Zhao",
"Ze-Wei",
""
],
[
"Yu",
"Chun-Kai",
""
],
[
"Li",
"Nan",
""
]
] | A black ring is an asymptotically flat vacuum solution of the Einstein equations with an event horizon of topology $S^1\times S^2$. A connection between the black ring entropy and its Weyl tensor $C_{\mu\nu\lambda\rho}$ is explored by interpreting the Weyl scalar invariant $C_{\mu\nu\lambda\rho} C^{\mu\nu\lambda\rho}$ ... |
1803.00549 | Lukas Weih | Elias R. Most, Lukas R. Weih, Luciano Rezzolla, and J\"urgen
Schaffner-Bielich | New constraints on radii and tidal deformabilities of neutron stars from
GW170817 | Added discussion on EOSs with phase transitions; no changes for
purely hadronic EOSs; matches version accepted by PRL | Phys. Rev. Lett. 120, 261103 (2018) | 10.1103/PhysRevLett.120.261103 | null | gr-qc astro-ph.HE nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore in a parameterized manner a very large range of physically
plausible equations of state (EOSs) for compact stars for matter that is either
purely hadronic or that exhibits a phase transition. In particular, we produce
two classes of EOSs with and without phase transitions, each containing one
million EOSs.... | [
{
"created": "Thu, 1 Mar 2018 18:36:24 GMT",
"version": "v1"
},
{
"created": "Thu, 31 May 2018 11:15:49 GMT",
"version": "v2"
}
] | 2018-07-04 | [
[
"Most",
"Elias R.",
""
],
[
"Weih",
"Lukas R.",
""
],
[
"Rezzolla",
"Luciano",
""
],
[
"Schaffner-Bielich",
"Jürgen",
""
]
] | We explore in a parameterized manner a very large range of physically plausible equations of state (EOSs) for compact stars for matter that is either purely hadronic or that exhibits a phase transition. In particular, we produce two classes of EOSs with and without phase transitions, each containing one million EOSs. W... |
1912.10210 | Kimihiro Nomura | Kimihiro Nomura, Asuka Ito, Jiro Soda | Pulsar timing residual induced by ultralight vector dark matter | 9 pages, 2 figures | Eur. Phys. J. C 80, 419 (2020) | 10.1140/epjc/s10052-020-7990-y | KOBE-COSMO-19-21 | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the ultralight vector dark matter with a mass around
$10^{-23}\,\mathrm{eV}$. The vector field oscillating coherently on galactic
scales induces oscillations of the spacetime metric with a frequency around
nHz, which is detectable by pulsar timing arrays. We find that the pulsar
timing signal due to the vect... | [
{
"created": "Sat, 21 Dec 2019 06:48:32 GMT",
"version": "v1"
},
{
"created": "Wed, 20 May 2020 11:53:03 GMT",
"version": "v2"
}
] | 2020-05-21 | [
[
"Nomura",
"Kimihiro",
""
],
[
"Ito",
"Asuka",
""
],
[
"Soda",
"Jiro",
""
]
] | We study the ultralight vector dark matter with a mass around $10^{-23}\,\mathrm{eV}$. The vector field oscillating coherently on galactic scales induces oscillations of the spacetime metric with a frequency around nHz, which is detectable by pulsar timing arrays. We find that the pulsar timing signal due to the vector... |
1106.3666 | Kayll Lake | Kayll Lake and Majd Abdelqader | More on McVittie's Legacy: A Schwarzschild - de Sitter black and white
hole embedded in an asymptotically $\Lambda$CDM cosmology | 21 pages 17 figures revtex4-1 Final Form to appear in Phys. Rev. D | Phys.Rev.D84:044045,2011 | 10.1103/PhysRevD.84.044045 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently Kaloper, Kleban and Martin reexamined the McVittie solution and
argued, contrary to a very widely held belief, that the solution contains a
black hole in an expanding universe. Here we corroborate their main conclusion
but go on to examine, in some detail, a specific solution that asymptotes to
the $\Lambda$... | [
{
"created": "Sat, 18 Jun 2011 16:07:03 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Jul 2011 18:25:56 GMT",
"version": "v2"
}
] | 2011-09-21 | [
[
"Lake",
"Kayll",
""
],
[
"Abdelqader",
"Majd",
""
]
] | Recently Kaloper, Kleban and Martin reexamined the McVittie solution and argued, contrary to a very widely held belief, that the solution contains a black hole in an expanding universe. Here we corroborate their main conclusion but go on to examine, in some detail, a specific solution that asymptotes to the $\Lambda$CD... |
gr-qc/0112051 | Hossein Farajollahi | Hossein Farajollahi and Hugh Luckock | Dirac observables and the phase space of general relativity | Latex,18 pages,no figures | Gen.Rel.Grav. 34 (2002) 1685-1699 | null | null | gr-qc | null | In the canonical approach to general relativity it is customary to
parametrize the phase space by initial data on spacelike hypersurfaces.
However, if one seeks a theory dealing with observations that can be made by a
single localized observer, it is natural to use a different description of the
phase space. This res... | [
{
"created": "Thu, 20 Dec 2001 06:10:37 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Dec 2001 01:49:16 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Farajollahi",
"Hossein",
""
],
[
"Luckock",
"Hugh",
""
]
] | In the canonical approach to general relativity it is customary to parametrize the phase space by initial data on spacelike hypersurfaces. However, if one seeks a theory dealing with observations that can be made by a single localized observer, it is natural to use a different description of the phase space. This resul... |
2203.08841 | Alejandro C\'ardenas-Avenda\~no | David Bronicki, Alejandro C\'ardenas-Avenda\~no, Leo C. Stein | Tidally-induced nonlinear resonances in EMRIs with an analogue model | V2. Updated to match published version | Class. Quantum Grav. 40 215015, 2023 | 10.1088/1361-6382/acfcfe | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | One of the important targets for the future space-based gravitational wave
observatory LISA is extreme mass ratio inspirals (EMRIs), where long and
accurate waveform modeling is necessary for detection and characterization.
Modeling EMRI dynamics requires accounting for effects such as the ones induced
by an external... | [
{
"created": "Wed, 16 Mar 2022 18:00:03 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Mar 2023 19:35:15 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Oct 2023 17:35:35 GMT",
"version": "v3"
}
] | 2023-10-11 | [
[
"Bronicki",
"David",
""
],
[
"Cárdenas-Avendaño",
"Alejandro",
""
],
[
"Stein",
"Leo C.",
""
]
] | One of the important targets for the future space-based gravitational wave observatory LISA is extreme mass ratio inspirals (EMRIs), where long and accurate waveform modeling is necessary for detection and characterization. Modeling EMRI dynamics requires accounting for effects such as the ones induced by an external t... |
1812.03604 | Yun Soo Myung | Yun Soo Myung and De-Cheng Zou | Quasinormal modes of scalarized black holes in the
Einstein-Maxwell-Scalar theory | 19 pages, 12 figures, version to appear in PLB | null | 10.1016/j.physletb.2019.01.046 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform the stability analysis on scalarized charged black holes in the
Einstein-Maxwell-Scalar (EMS) theory by computing quasinormal mode spectrum. It
is noted that the appearance of these black holes with scalar hair is closely
related to the instability of Reissner-Nordstr\"om black holes without scalar
hair in... | [
{
"created": "Mon, 10 Dec 2018 03:09:19 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Jan 2019 22:59:49 GMT",
"version": "v2"
}
] | 2019-02-06 | [
[
"Myung",
"Yun Soo",
""
],
[
"Zou",
"De-Cheng",
""
]
] | We perform the stability analysis on scalarized charged black holes in the Einstein-Maxwell-Scalar (EMS) theory by computing quasinormal mode spectrum. It is noted that the appearance of these black holes with scalar hair is closely related to the instability of Reissner-Nordstr\"om black holes without scalar hair in t... |
1407.3849 | Betti Hartmann | Eugenio R. Bezerra de Mello (UFPB, Brazil), Julio C. Fabris (UFES,
Brazil) and Betti Hartmann (UFES, Brazil & Jacobs University Bremen, Germany) | Abelian-Higgs strings in Rastall gravity | 12 pages including 4 figures; v2: statements clarified, typos
corrected; v3: matches version published in Class. Quantum Grav | Class. Quantum Grav. 32 (2015) 085009 | 10.1088/0264-9381/32/8/085009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we analyze Abelian-Higgs strings in a phenomenological model
that takes quantum effects in curved space-time into account. This model, first
introduced by Rastall, cannot be derived from an action principle. We formulate
phenomenological equations of motion under the guiding principle of minimal
possibl... | [
{
"created": "Mon, 14 Jul 2014 23:56:42 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jul 2014 21:21:10 GMT",
"version": "v2"
},
{
"created": "Thu, 2 Apr 2015 01:45:16 GMT",
"version": "v3"
}
] | 2015-06-22 | [
[
"de Mello",
"Eugenio R. Bezerra",
"",
"UFPB, Brazil"
],
[
"Fabris",
"Julio C.",
"",
"UFES,\n Brazil"
],
[
"Hartmann",
"Betti",
"",
"UFES, Brazil & Jacobs University Bremen, Germany"
]
] | In this paper we analyze Abelian-Higgs strings in a phenomenological model that takes quantum effects in curved space-time into account. This model, first introduced by Rastall, cannot be derived from an action principle. We formulate phenomenological equations of motion under the guiding principle of minimal possible ... |
gr-qc/0409084 | Pavlin Savov | Pavlin Savov, Sergey Vyatchanin | Estimate of Tilt Instability of Mesa-Beam and Gaussian-Beam Modes for
Advanced LIGO | 10 pages, 3 figures, 4 tables | Phys.Rev. D74 (2006) 082002 | 10.1103/PhysRevD.74.082002 | null | gr-qc | null | Sidles and Sigg have shown that advanced LIGO interferometers will encounter
a serious tilt instability, in which symmetric tilts of the mirrors of an arm
cavity cause the cavity's light beam to slide sideways, so its radiation
pressure exerts a torque that increases the tilt. Sidles and Sigg showed that
the strength... | [
{
"created": "Tue, 21 Sep 2004 23:08:47 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Savov",
"Pavlin",
""
],
[
"Vyatchanin",
"Sergey",
""
]
] | Sidles and Sigg have shown that advanced LIGO interferometers will encounter a serious tilt instability, in which symmetric tilts of the mirrors of an arm cavity cause the cavity's light beam to slide sideways, so its radiation pressure exerts a torque that increases the tilt. Sidles and Sigg showed that the strength T... |
2109.12037 | Elena Medina | Gabriel \'Alvarez, Luis Mart\'inez Alonso, Elena Medina | Kinetic dominance and the wavefunction of the universe | 26 pages, 6 figures | null | 10.1103/PhysRevD.105.083502 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We analyze the emergence of classical inflationary universes in a
kinetic-dominated stage using a suitable class of solutions of the Wheeler-De
Witt equation with a constant potential. These solutions are eigenfunctions of
the inflaton momentum operator that are strongly peaked on classical solutions
exhibiting eithe... | [
{
"created": "Fri, 24 Sep 2021 15:50:34 GMT",
"version": "v1"
}
] | 2022-04-20 | [
[
"Álvarez",
"Gabriel",
""
],
[
"Alonso",
"Luis Martínez",
""
],
[
"Medina",
"Elena",
""
]
] | We analyze the emergence of classical inflationary universes in a kinetic-dominated stage using a suitable class of solutions of the Wheeler-De Witt equation with a constant potential. These solutions are eigenfunctions of the inflaton momentum operator that are strongly peaked on classical solutions exhibiting either ... |
gr-qc/0212054 | Annelies Gerber | P Dolan and A Gerber | The Riemann-Lanczos Problem as an Exterior Differential System with
Examples in 4 and 5 Dimensions | 26 pages, latex, no figures | null | null | null | gr-qc | null | The key problem of the theory of exterior differential systems (EDS) is to
decide whether or not a system is in involution. The special case of EDSs
generated by one-forms (Pfaffian systems) can be adequately illustrated by a
2-dimensional example. In 4 dimensions two such problems arise in a natural
way, namely, the... | [
{
"created": "Thu, 12 Dec 2002 10:13:54 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Dolan",
"P",
""
],
[
"Gerber",
"A",
""
]
] | The key problem of the theory of exterior differential systems (EDS) is to decide whether or not a system is in involution. The special case of EDSs generated by one-forms (Pfaffian systems) can be adequately illustrated by a 2-dimensional example. In 4 dimensions two such problems arise in a natural way, namely, the R... |
0808.1295 | Merab Gogberashvili Dr | Merab Gogberashvili and Ramaz Khomeriki | Trapping of Nonlinear Gravitational Waves by Two-Fluid Systems | 8 pages, the version accepted by Mod. Phys. Lett. A | Mod.Phys.Lett.A24:2761-2768,2009 | 10.1142/S0217732309032083 | null | gr-qc astro-ph hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the coupled two-fluid gravitating system (e.g. stiff matter and
'vacuum energy') could trap nonlinear gravitational waves (e.g. Einstein-Rosen
waves). The gravitational wave amplitude varies harmonically in time
transferring the energy coherently to the stiff matter wave, and then the
process goes to the... | [
{
"created": "Fri, 8 Aug 2008 20:55:44 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Sep 2009 09:07:27 GMT",
"version": "v2"
}
] | 2009-12-08 | [
[
"Gogberashvili",
"Merab",
""
],
[
"Khomeriki",
"Ramaz",
""
]
] | We show that the coupled two-fluid gravitating system (e.g. stiff matter and 'vacuum energy') could trap nonlinear gravitational waves (e.g. Einstein-Rosen waves). The gravitational wave amplitude varies harmonically in time transferring the energy coherently to the stiff matter wave, and then the process goes to the b... |
0906.1949 | Kostyantyn Ropotenko | Kostyantyn Ropotenko | Quantization of the black hole area as quantization of the angular
momentum component | 4 pages (revtex), no figures; a boundary condition for the
differential equation (15) added; the absent of the remnants in the approach
noted; a reference added; accepted by Physical Review D for publication | Phys.Rev.D80:044022,2009 | 10.1103/PhysRevD.80.044022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In transforming from Schwarzschild to Euclidean Rindler coordinates the
Schwarzschild time transforms to a periodic angle. As is well-known, this
allows one to introduce the Hawking temperature and is an origin of black hole
thermodynamics. On the other hand, according to quantum mechanics this angle is
conjugate to ... | [
{
"created": "Wed, 10 Jun 2009 15:46:56 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Jun 2009 14:36:20 GMT",
"version": "v2"
},
{
"created": "Thu, 13 Aug 2009 12:54:42 GMT",
"version": "v3"
}
] | 2009-09-01 | [
[
"Ropotenko",
"Kostyantyn",
""
]
] | In transforming from Schwarzschild to Euclidean Rindler coordinates the Schwarzschild time transforms to a periodic angle. As is well-known, this allows one to introduce the Hawking temperature and is an origin of black hole thermodynamics. On the other hand, according to quantum mechanics this angle is conjugate to th... |
2311.04972 | Alex Va\~n\'o-Vi\~nuales | Alex Va\~n\'o-Vi\~nuales | Conformal diagrams for stationary and dynamical strong-field
hyperboloidal slices | 18 pages, 14 figures, matches published version | Classical and Quantum Gravity 41 (2024) 105003 | 10.1088/1361-6382/ad3aca | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Conformal Carter-Penrose diagrams are used for the visualization of
hyperboloidal slices, which are smooth spacelike slices reaching null infinity.
The focus is on the Schwarzschild black hole geometry in spherical symmetry,
whose Penrose diagrams are introduced in a pedagogical way. The stationary
regime involves ti... | [
{
"created": "Wed, 8 Nov 2023 19:00:03 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Apr 2024 11:49:27 GMT",
"version": "v2"
}
] | 2024-04-24 | [
[
"Vañó-Viñuales",
"Alex",
""
]
] | Conformal Carter-Penrose diagrams are used for the visualization of hyperboloidal slices, which are smooth spacelike slices reaching null infinity. The focus is on the Schwarzschild black hole geometry in spherical symmetry, whose Penrose diagrams are introduced in a pedagogical way. The stationary regime involves time... |
2101.02019 | Ion I. Cotaescu | Ion I. Cotaescu | Light from Reissner-Nordstrom-de Sitter black holes | 14 pages, 3 figures. arXiv admin note: text overlap with
arXiv:2011.02434 | null | 10.1142/S0217732321501625 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive for the first time the form of the spiral null geodesics around the
photon sphere of the Reissner-Nordstrom black hole in the de Sitter expanding
universe. Moreover, we obtain the principal parameter we need for deriving,
according to our method [I. I. Cot\u aescu. {Eur. Phys. J. C.} (2021) 81:32],
the blac... | [
{
"created": "Wed, 6 Jan 2021 13:36:35 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jan 2021 13:25:50 GMT",
"version": "v2"
},
{
"created": "Thu, 22 Apr 2021 19:09:08 GMT",
"version": "v3"
}
] | 2021-08-11 | [
[
"Cotaescu",
"Ion I.",
""
]
] | We derive for the first time the form of the spiral null geodesics around the photon sphere of the Reissner-Nordstrom black hole in the de Sitter expanding universe. Moreover, we obtain the principal parameter we need for deriving, according to our method [I. I. Cot\u aescu. {Eur. Phys. J. C.} (2021) 81:32], the black ... |
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