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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1404.2747 | Donato Bini | Donato Bini and Thibault Damour | Two-body gravitational spin-orbit interaction at linear order in the
mass ratio | 22 pages, 3 figures, revtex macros | Phys. Rev. D 90, 024039 (2014) | 10.1103/PhysRevD.90.024039 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically compute, to linear order in the mass-ratio, the "geodetic"
spin precession frequency of a small spinning body orbiting a large
(non-spinning) body to the eight-and-a-half post-Newtonian order, thereby
extending previous analytical knowledge which was limited to the third
post-Newtonian level. These re... | [
{
"created": "Thu, 10 Apr 2014 09:23:53 GMT",
"version": "v1"
}
] | 2014-07-23 | [
[
"Bini",
"Donato",
""
],
[
"Damour",
"Thibault",
""
]
] | We analytically compute, to linear order in the mass-ratio, the "geodetic" spin precession frequency of a small spinning body orbiting a large (non-spinning) body to the eight-and-a-half post-Newtonian order, thereby extending previous analytical knowledge which was limited to the third post-Newtonian level. These resu... |
2109.03700 | Christopher Kohler | Christopher Kohler | Gravity with a Dynamical Spinning Aether | 15 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein-aether theory is extended by allowing for spinning degrees of
freedom of the aether. In addition to the acceleration, shear, expansion, and
vorticity of the aether velocity field, a spin rotation describing the dynamics
of a classical intrinsic angular momentum of the aether is introduced as a
kinematic quan... | [
{
"created": "Wed, 8 Sep 2021 15:05:28 GMT",
"version": "v1"
}
] | 2021-09-09 | [
[
"Kohler",
"Christopher",
""
]
] | Einstein-aether theory is extended by allowing for spinning degrees of freedom of the aether. In addition to the acceleration, shear, expansion, and vorticity of the aether velocity field, a spin rotation describing the dynamics of a classical intrinsic angular momentum of the aether is introduced as a kinematic quanti... |
2404.14756 | Jin Young Kim | Jin Young Kim | Deflection of light by a compact object with electric charge and
magnetic dipole in Einstein-Born-Infeld gravity | 11 pages, 1 figure | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We consider the bending of light around a compact astrophysical object with
both the electric field and the magnetic field in Einstein-Born-Infeld theory.
From the null geodesic of a light ray passing a massive object with electric
charge and magnetic dipole, the effective metric was obtained from the light
cone cond... | [
{
"created": "Tue, 23 Apr 2024 05:43:28 GMT",
"version": "v1"
}
] | 2024-04-24 | [
[
"Kim",
"Jin Young",
""
]
] | We consider the bending of light around a compact astrophysical object with both the electric field and the magnetic field in Einstein-Born-Infeld theory. From the null geodesic of a light ray passing a massive object with electric charge and magnetic dipole, the effective metric was obtained from the light cone condit... |
1703.09738 | Tolga Birkandan | Tolga Birkandan, Ceren G\"uzelg\"un, Elif \c{S}irin, Mustafa Can Uslu | Symbolic and Numerical Analysis in General Relativity with Open Source
Computer Algebra Systems | 21 pages, 4 figures. Updated to match the published version | Gen Relativ Gravit (2019) 51: 4 | 10.1007/s10714-018-2486-x | null | gr-qc hep-th physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study three computer algebra systems, namely SageMath (with SageManifolds
package), Maxima (with ctensor package) and Python language (with GraviPy
module), which allow tensor manipulation for general relativity calculations
along with general algebraic calculations. We present a benchmark of these
systems using s... | [
{
"created": "Tue, 28 Mar 2017 18:33:53 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Oct 2018 10:20:56 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Dec 2018 08:44:05 GMT",
"version": "v3"
}
] | 2018-12-19 | [
[
"Birkandan",
"Tolga",
""
],
[
"Güzelgün",
"Ceren",
""
],
[
"Şirin",
"Elif",
""
],
[
"Uslu",
"Mustafa Can",
""
]
] | We study three computer algebra systems, namely SageMath (with SageManifolds package), Maxima (with ctensor package) and Python language (with GraviPy module), which allow tensor manipulation for general relativity calculations along with general algebraic calculations. We present a benchmark of these systems using sim... |
0808.0713 | Yosef Zlochower | Manuela Campanelli, Carlos O. Lousto, Hiroyuki Nakano, Yosef Zlochower | Comparison of Numerical and Post-Newtonian Waveforms for Generic
Precessing Black-Hole Binaries | New figures, enhanced analysis, revisions throughout the paper | Phys.Rev.D79:084010,2009 | 10.1103/PhysRevD.79.084010 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compare waveforms and orbital dynamics from the first long-term, fully
non-linear, numerical simulations of a generic black-hole binary configuration
with post-Newtonian predictions. The binary has mass ratio q~0.8 with
arbitrarily oriented spins of magnitude S_1/m_1^2~0.6 and S_2/m_2^2~0.4 and
orbits 9 times prio... | [
{
"created": "Tue, 5 Aug 2008 20:01:05 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Aug 2008 01:34:18 GMT",
"version": "v2"
},
{
"created": "Thu, 1 Jan 2009 19:59:14 GMT",
"version": "v3"
}
] | 2009-11-13 | [
[
"Campanelli",
"Manuela",
""
],
[
"Lousto",
"Carlos O.",
""
],
[
"Nakano",
"Hiroyuki",
""
],
[
"Zlochower",
"Yosef",
""
]
] | We compare waveforms and orbital dynamics from the first long-term, fully non-linear, numerical simulations of a generic black-hole binary configuration with post-Newtonian predictions. The binary has mass ratio q~0.8 with arbitrarily oriented spins of magnitude S_1/m_1^2~0.6 and S_2/m_2^2~0.4 and orbits 9 times prior ... |
0909.0066 | Peter Zimmerman | Duncan A. Brown and Peter J. Zimmerman | The Effect of Eccentricity on Searches for Gravitational-Waves from
Coalescing Compact Binaries in Ground-based Detectors | 10 pages, 9 figures, as published in Phys. Rev. D | Phys.Rev.D81:024007,2010 | 10.1103/PhysRevD.81.024007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspiralling compact binaries are expected to circularize before their
gravitational-wave signals reach the sensitive frequency band of ground-based
detectors. Current searches for gravitational waves from compact binaries using
the LIGO and Virgo detectors therefore use circular templates to construct
matched filter... | [
{
"created": "Tue, 1 Sep 2009 02:01:34 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Feb 2010 15:14:29 GMT",
"version": "v2"
}
] | 2010-04-06 | [
[
"Brown",
"Duncan A.",
""
],
[
"Zimmerman",
"Peter J.",
""
]
] | Inspiralling compact binaries are expected to circularize before their gravitational-wave signals reach the sensitive frequency band of ground-based detectors. Current searches for gravitational waves from compact binaries using the LIGO and Virgo detectors therefore use circular templates to construct matched filters.... |
2010.09481 | Martin Kolo\v{s} | Martin Kolo\v{s}, Arman Tursunov, Zden\v{e}k Stuchl\'ik | Radiative Penrose process: Energy Gain by a Single Radiating Charged
Particle in the Ergosphere of Rotating Black Hole | 5 pages, 1 figure, submitted | Phys. Rev. D 103, 024021 (2021) | 10.1103/PhysRevD.103.024021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate an extraordinary effect of energy gain by a single radiating
charged particle inside the ergosphere of a Kerr black hole in presence of
magnetic field. We solve numerically the covariant form of the Lorentz-Dirac
equation reduced from the DeWitt-Brehme equation and analyze energy evolution
of the radia... | [
{
"created": "Mon, 19 Oct 2020 13:22:55 GMT",
"version": "v1"
}
] | 2021-01-20 | [
[
"Kološ",
"Martin",
""
],
[
"Tursunov",
"Arman",
""
],
[
"Stuchlík",
"Zdeněk",
""
]
] | We demonstrate an extraordinary effect of energy gain by a single radiating charged particle inside the ergosphere of a Kerr black hole in presence of magnetic field. We solve numerically the covariant form of the Lorentz-Dirac equation reduced from the DeWitt-Brehme equation and analyze energy evolution of the radiati... |
1412.4267 | Peter K.F. Kuhfittig | Peter K.F. Kuhfittig | Macroscopic traversable wormholes with zero tidal forces inspired by
noncommutative geometry | 8 pages, no figures | Int. J. Mod. Phys. D, vol. 24, 1550023 (8 pages), 2015 | 10.1142/S0218271815500236 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper addresses the following issues: (1) the possible existence of
macroscopic traversable wormholes, given a noncommutative-geometry background,
and (2) the possibility of allowing zero tidal forces, given a known density.
It is shown that whenever the energy density describes a classical wormhole,
the resulti... | [
{
"created": "Sat, 13 Dec 2014 18:27:01 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Jan 2015 22:04:23 GMT",
"version": "v2"
},
{
"created": "Fri, 26 Aug 2016 13:35:20 GMT",
"version": "v3"
},
{
"created": "Tue, 8 Jan 2019 17:02:09 GMT",
"version": "v4"
}
] | 2019-01-09 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | This paper addresses the following issues: (1) the possible existence of macroscopic traversable wormholes, given a noncommutative-geometry background, and (2) the possibility of allowing zero tidal forces, given a known density. It is shown that whenever the energy density describes a classical wormhole, the resulting... |
2006.11626 | Maria De F\'atima Alves da Silva PhD | L. S. M. Veneroni, A. Braz and M. F. A. da Silva | Compact Object with a Local Dark Energy Shell | 32 pages, 15 figures | null | 10.1142/S0218271821500395 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate some models of compact objects in the general relativity
theory with cosmological constant $\Lambda$, based on two density profiles, one
of them attributed to Stewart and the other one to Durgapal and Bannerji,
proposed in the literature to model "neutron stars". For them, a nonlocal
equation of state ... | [
{
"created": "Sat, 20 Jun 2020 17:57:30 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Feb 2021 19:48:31 GMT",
"version": "v2"
}
] | 2021-05-12 | [
[
"Veneroni",
"L. S. M.",
""
],
[
"Braz",
"A.",
""
],
[
"da Silva",
"M. F. A.",
""
]
] | We investigate some models of compact objects in the general relativity theory with cosmological constant $\Lambda$, based on two density profiles, one of them attributed to Stewart and the other one to Durgapal and Bannerji, proposed in the literature to model "neutron stars". For them, a nonlocal equation of state wi... |
gr-qc/9301017 | null | S.W. Hawking, R. Laflamme and G.W. Lyons | The Origin of Time Asymmetry | 41 pages, DAMTP R92/20 | Phys.Rev. D47 (1993) 5342-5356 | 10.1103/PhysRevD.47.5342 | null | gr-qc astro-ph | null | It is argued that the observed Thermodynamic Arrow of Time must arise from
the boundary conditions of the universe. We analyse the consequences of the no
boundary proposal, the only reasonably complete set of boundary conditions that
has been put forward. We study perturbations of a Friedmann model containing a
massi... | [
{
"created": "Mon, 18 Jan 1993 16:00:00 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Hawking",
"S. W.",
""
],
[
"Laflamme",
"R.",
""
],
[
"Lyons",
"G. W.",
""
]
] | It is argued that the observed Thermodynamic Arrow of Time must arise from the boundary conditions of the universe. We analyse the consequences of the no boundary proposal, the only reasonably complete set of boundary conditions that has been put forward. We study perturbations of a Friedmann model containing a massive... |
1503.05469 | Susana Valdez | Carlos A. Soto-Campos, Susana Valdez-Alvarado | Noncommutative Reissner-Nordstr{\o}m Black hole | 7 page | null | 10.1139/cjp-2017-0599 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A deformed embedding of the Reissner-Nordstr{\o}m spacetime is constructed
within the framework of a noncommutative Riemannian geometry. We find
noncommutative corrections to the usual Riemannian expressions for the metric
and curvature tensors, which, in the case of the metric, are valid to all
orders in the deforma... | [
{
"created": "Wed, 18 Mar 2015 16:22:30 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Dec 2015 17:06:45 GMT",
"version": "v2"
}
] | 2018-05-18 | [
[
"Soto-Campos",
"Carlos A.",
""
],
[
"Valdez-Alvarado",
"Susana",
""
]
] | A deformed embedding of the Reissner-Nordstr{\o}m spacetime is constructed within the framework of a noncommutative Riemannian geometry. We find noncommutative corrections to the usual Riemannian expressions for the metric and curvature tensors, which, in the case of the metric, are valid to all orders in the deformati... |
1006.4809 | Sunil Maharaj | A. M. Msomi, K. S. Govinder, S. D. Maharaj | Gravitating fluids with Lie symmetries | 13 pages, To appear in J. Phys. A: Math. Theor | J. Phys. A 43: 285203, 2010 | 10.1088/1751-8113/43/28/285203 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse the underlying nonlinear partial differential equation which
arises in the study of gravitating flat fluid plates of embedding class one.
Our interest in this equation lies in discussing new solutions that can be
found by means of Lie point symmetries. The method utilised reduces the partial
differential e... | [
{
"created": "Thu, 24 Jun 2010 15:06:41 GMT",
"version": "v1"
}
] | 2015-05-19 | [
[
"Msomi",
"A. M.",
""
],
[
"Govinder",
"K. S.",
""
],
[
"Maharaj",
"S. D.",
""
]
] | We analyse the underlying nonlinear partial differential equation which arises in the study of gravitating flat fluid plates of embedding class one. Our interest in this equation lies in discussing new solutions that can be found by means of Lie point symmetries. The method utilised reduces the partial differential equ... |
gr-qc/9810075 | Gerard Clement | G\'erard Cl\'ement | Spinning ring wormholes: a classical model for elementary particles? | 15 pages, Latex | null | null | GCR-98/11/02 | gr-qc astro-ph hep-th | null | Static horizonless solutions to the Einstein--Maxwell field equations, with
only a circular cosmic string singularity, are extended to exact rotating
asymptotically flat solutions. The possible interpretation of these field
configurations as spinning elementary particles or as macroscopic rotating
cosmic rings is dis... | [
{
"created": "Thu, 22 Oct 1998 15:45:30 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Clément",
"Gérard",
""
]
] | Static horizonless solutions to the Einstein--Maxwell field equations, with only a circular cosmic string singularity, are extended to exact rotating asymptotically flat solutions. The possible interpretation of these field configurations as spinning elementary particles or as macroscopic rotating cosmic rings is discu... |
2007.13956 | Luis Granda | L. N. Granda | Modified gravity with disappearing cosmological constant | 42 pages, 7 figures, version published in JHEP | J. High Energ. Phys. 2021, 205 (2021) | 10.1007/JHEP12(2021)205 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | New corrections to General Relativity are considered in the context of
modified $f(R)$ gravity, that satisfy cosmological and local gravity
constraints. The proposed models behave asymptotically as $R-2\Lambda$ at large
curvature and show the vanishing of the cosmological constant at the flat
spacetime limit. The cha... | [
{
"created": "Tue, 28 Jul 2020 02:39:43 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Aug 2020 21:10:59 GMT",
"version": "v2"
},
{
"created": "Wed, 21 Jul 2021 02:39:33 GMT",
"version": "v3"
},
{
"created": "Wed, 12 Jan 2022 04:35:26 GMT",
"version": "v4"
}
] | 2022-01-13 | [
[
"Granda",
"L. N.",
""
]
] | New corrections to General Relativity are considered in the context of modified $f(R)$ gravity, that satisfy cosmological and local gravity constraints. The proposed models behave asymptotically as $R-2\Lambda$ at large curvature and show the vanishing of the cosmological constant at the flat spacetime limit. The chame... |
0801.3683 | Robert R. Caldwell | P. P. Yu and R. R. Caldwell | Observer dependence of the quasi-local energy and momentum in
Schwarzschild space-time | 7 pages, 3 figures; accepted for publication in Gen. Rel. Grav | null | 10.1007/s10714-008-0686-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The observer dependence of the quasi-local energy (QLE) and momentum in the
Schwarzschild geometry is illustrated. Using the Brown-York prescription, the
QLE for families of non-geodesic and geodesic observers penetrating the event
horizon is obtained. An explicit shell-building process is presented and the
binding e... | [
{
"created": "Wed, 23 Jan 2008 23:02:17 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Sep 2008 19:54:54 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Yu",
"P. P.",
""
],
[
"Caldwell",
"R. R.",
""
]
] | The observer dependence of the quasi-local energy (QLE) and momentum in the Schwarzschild geometry is illustrated. Using the Brown-York prescription, the QLE for families of non-geodesic and geodesic observers penetrating the event horizon is obtained. An explicit shell-building process is presented and the binding ene... |
1010.3420 | Sabine Hossenfelder | Sabine Hossenfelder | Experimental Search for Quantum Gravity | This article is partly based on the talks at the workshop on
Experimental Search for Quantum Gravity, Stockholm, July 12-16 2010 | "Classical and Quantum Gravity: Theory, Analysis and
Applications," Chapter 5, Edited by V. R. Frignanni, Nova Publishers (2011) | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We offer a brief survey of existent and planned experimental tests for
quantum gravity. First, we outline the questions we wish to address, and then
introduce some of the phenomenological models that are currently used in
quantum gravity, both with and without a lowered Planck scale. After that, we
summarize experime... | [
{
"created": "Sun, 17 Oct 2010 15:21:06 GMT",
"version": "v1"
}
] | 2011-12-16 | [
[
"Hossenfelder",
"Sabine",
""
]
] | We offer a brief survey of existent and planned experimental tests for quantum gravity. First, we outline the questions we wish to address, and then introduce some of the phenomenological models that are currently used in quantum gravity, both with and without a lowered Planck scale. After that, we summarize experiment... |
2204.00698 | Carolyn Raithel | Carolyn A. Raithel, Vasileios Paschalidis | Improving the convergence order of binary neutron star merger
simulations in the Baumgarte-Shapiro-Shibata-Nakamura formulation | 17 pages, 9 figures | null | 10.1103/PhysRevD.106.023015 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | High-accuracy numerical relativity simulations of binary neutron star mergers
are a necessary ingredient for constructing gravitational waveform templates to
analyze and interpret observations of compact object mergers. Numerical
convergence in the post-merger phase of such simulations is challenging to
achieve with ... | [
{
"created": "Fri, 1 Apr 2022 21:11:37 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Jul 2022 20:04:26 GMT",
"version": "v2"
}
] | 2022-07-27 | [
[
"Raithel",
"Carolyn A.",
""
],
[
"Paschalidis",
"Vasileios",
""
]
] | High-accuracy numerical relativity simulations of binary neutron star mergers are a necessary ingredient for constructing gravitational waveform templates to analyze and interpret observations of compact object mergers. Numerical convergence in the post-merger phase of such simulations is challenging to achieve with ma... |
1712.04520 | Patrick Valageas | Philippe Brax, Patrick Valageas | Self-acceleration in scalar-bimetric theories | 35 pages | Phys. Rev. D 97, 103516 (2018) | 10.1103/PhysRevD.97.103516 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe scalar-bimetric theories where the dynamics of the Universe are
governed by two separate metrics, each with an Einstein-Hilbert term. In this
setting, the baryonic and dark matter components of the Universe couple to
metrics which are constructed as functions of these two gravitational metrics.
The scalar... | [
{
"created": "Mon, 11 Dec 2017 18:18:10 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Oct 2018 09:07:32 GMT",
"version": "v2"
}
] | 2018-10-09 | [
[
"Brax",
"Philippe",
""
],
[
"Valageas",
"Patrick",
""
]
] | We describe scalar-bimetric theories where the dynamics of the Universe are governed by two separate metrics, each with an Einstein-Hilbert term. In this setting, the baryonic and dark matter components of the Universe couple to metrics which are constructed as functions of these two gravitational metrics. The scalar f... |
1905.05516 | Mieszko Rutkowski | Mieszko Rutkowski | Nonlinear perturbations of Reissner-Nordstr\"om black holes | 9 pages | Phys. Rev. D 100, 044017 (2019) | 10.1103/PhysRevD.100.044017 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a nonlinear perturbation theory of Reissner-Nordstr\"om black
holes. We show that, at each perturbation level, Einstein-Maxwell equations can
be reduced to four inhomogeneous wave equations, two for polar and two for
axial sector. Gravitational part of these equations is similar to Regge-Wheeler
and Zerill... | [
{
"created": "Tue, 14 May 2019 11:00:44 GMT",
"version": "v1"
}
] | 2019-08-14 | [
[
"Rutkowski",
"Mieszko",
""
]
] | We develop a nonlinear perturbation theory of Reissner-Nordstr\"om black holes. We show that, at each perturbation level, Einstein-Maxwell equations can be reduced to four inhomogeneous wave equations, two for polar and two for axial sector. Gravitational part of these equations is similar to Regge-Wheeler and Zerilli ... |
gr-qc/0411036 | Robert Milson | Robert Milson | Alignment and the classification of Lorentz-signature tensors | 8 pages. To be published in the proceedings of SPT2004 | null | 10.1142/9789812702142_0026 | null | gr-qc | null | We define the notion of an aligned null direction, a Lorentz-signature
analogue of the eigenvector concept that is valid for arbitrary tensor types.
The set of aligned null directions is described by a a system of alignment
polynomials whose coefficients are derived from the components of the tensor.
The algebraic pr... | [
{
"created": "Mon, 8 Nov 2004 11:29:11 GMT",
"version": "v1"
}
] | 2016-11-23 | [
[
"Milson",
"Robert",
""
]
] | We define the notion of an aligned null direction, a Lorentz-signature analogue of the eigenvector concept that is valid for arbitrary tensor types. The set of aligned null directions is described by a a system of alignment polynomials whose coefficients are derived from the components of the tensor. The algebraic prop... |
2304.08574 | Maciej Dunajski | Maciej Dunajski | Equivalence principle, de-Sitter space, and cosmological twistors | First award winning essay of the 2023 Gravity Research Foundation
competition | Internat. J. Modern Phys. D32(2023), no.14, Paper No. 2341001 | null | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | I discuss the impact of the positive cosmological constant on the interplay
between the equivalence principle in general relativity, and the rules of
quantum mechanics. At the non--relativistic level there is an ambiguity in the
definition of a phase of a wave function measured by inertial and accelerating
observes. ... | [
{
"created": "Mon, 17 Apr 2023 19:33:54 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Dec 2023 19:07:09 GMT",
"version": "v2"
}
] | 2023-12-19 | [
[
"Dunajski",
"Maciej",
""
]
] | I discuss the impact of the positive cosmological constant on the interplay between the equivalence principle in general relativity, and the rules of quantum mechanics. At the non--relativistic level there is an ambiguity in the definition of a phase of a wave function measured by inertial and accelerating observes. Th... |
1508.00276 | Genly Le\'on | Alan A. Coley (Dalhousie U., Math. Dept.), Genly Leon (Valparaiso U.,
Catolica), Patrik Sandin (Potsdam, Max Planck Inst.), Joey Latta (Dalhousie
U., Math. Dept.) | Spherically symmetric Einstein-aether perfect fluid models | 52 pages, 7 figures. Matches the published version. arXiv admin note:
text overlap with arXiv:gr-qc/0603058 by other authors | JCAP12(2015)010 | 10.1088/1475-7516/2015/12/010 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate spherically symmetric cosmological models in Einstein-aether
theory with a tilted (non-comoving) perfect fluid source. We use a 1+3 frame
formalism and adopt the comoving aether gauge to derive the evolution
equations, which form a well-posed system of first order partial differential
equations in two ... | [
{
"created": "Sun, 2 Aug 2015 19:26:38 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Dec 2015 13:28:47 GMT",
"version": "v2"
}
] | 2015-12-08 | [
[
"Coley",
"Alan A.",
"",
"Dalhousie U., Math. Dept."
],
[
"Leon",
"Genly",
"",
"Valparaiso U.,\n Catolica"
],
[
"Sandin",
"Patrik",
"",
"Potsdam, Max Planck Inst."
],
[
"Latta",
"Joey",
"",
"Dalhousie\n U., Math. Dept."
]
] | We investigate spherically symmetric cosmological models in Einstein-aether theory with a tilted (non-comoving) perfect fluid source. We use a 1+3 frame formalism and adopt the comoving aether gauge to derive the evolution equations, which form a well-posed system of first order partial differential equations in two va... |
2210.02706 | Lalit Pathak | Lalit Pathak, Amit Reza, Anand S. Sengupta | Fast likelihood evaluation using meshfree approximations for
reconstructing compact binary sources | 9 Pages, 5 Figures | volume = 108, issue = 6, pages = 064055, year = 2023 | 10.1103/PhysRevD.108.064055 | LIGO DCC number: LIGO-P2200253 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Several rapid parameter estimation methods have recently been advanced to
deal with the computational challenges of the problem of Bayesian inference of
the properties of compact binary sources detected in the upcoming science runs
of the terrestrial network of gravitational wave detectors. Some of these
methods are ... | [
{
"created": "Thu, 6 Oct 2022 06:41:17 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Dec 2023 19:10:08 GMT",
"version": "v2"
}
] | 2023-12-05 | [
[
"Pathak",
"Lalit",
""
],
[
"Reza",
"Amit",
""
],
[
"Sengupta",
"Anand S.",
""
]
] | Several rapid parameter estimation methods have recently been advanced to deal with the computational challenges of the problem of Bayesian inference of the properties of compact binary sources detected in the upcoming science runs of the terrestrial network of gravitational wave detectors. Some of these methods are we... |
1506.08775 | Steven Carlip | S. Carlip | Dimensional reduction in causal set gravity | 6+1 pages; v2: added references, cite of new result on spectral
dimension; v3: minor corrections to match published version | Class. Quantum Grav. 32 (2015) 232001 | 10.1088/0264-9381/32/23/232001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Results from a number of different approaches to quantum gravity suggest that
the effective dimension of spacetime may drop to $d=2$ at small scales. I show
that two different dimensional estimators in causal set theory display the same
behavior, and argue that a third, the spectral dimension, may exhibit a related
p... | [
{
"created": "Mon, 29 Jun 2015 18:48:28 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Sep 2015 17:33:28 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Nov 2015 23:01:21 GMT",
"version": "v3"
}
] | 2015-11-18 | [
[
"Carlip",
"S.",
""
]
] | Results from a number of different approaches to quantum gravity suggest that the effective dimension of spacetime may drop to $d=2$ at small scales. I show that two different dimensional estimators in causal set theory display the same behavior, and argue that a third, the spectral dimension, may exhibit a related phe... |
1203.0675 | Lorenzo Iorio | Lorenzo Iorio | Lower bounds of characteristic scale of topological modification of the
Newtonian gravitation | Latex, 6 pages, no tables, 1 figure, 3 references. Accepted for
publication in International Journal of Modern Physics D (IJMPD) | Int. J. Mod. Phys.D 21:1250048,2012 | 10.1142/S0218271812500484 | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically work out the long-term orbital perturbations induced by the
first term of the expansion of the perturbing potential arising from the local
modification of the Newton's inverse square law due to a topology R^2 x S^1
with a compactified dimension of radius R recently proposed by Floratos and
Leontaris. ... | [
{
"created": "Sat, 3 Mar 2012 18:30:07 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Apr 2012 07:54:03 GMT",
"version": "v2"
}
] | 2012-04-27 | [
[
"Iorio",
"Lorenzo",
""
]
] | We analytically work out the long-term orbital perturbations induced by the first term of the expansion of the perturbing potential arising from the local modification of the Newton's inverse square law due to a topology R^2 x S^1 with a compactified dimension of radius R recently proposed by Floratos and Leontaris. We... |
gr-qc/0502022 | Mohammad Vahid Takook | S. Moradi, S. Rouhani and M.V. Takook | Discrete Symmetries for Spinor Field in de Sitter Space | 13 pages, LaTeX; appendices added | Phys.Lett.B613:74-82,2005; Erratum-ibid.B658:284,2008 | 10.1016/j.physletb.2005.03.030 10.1016/j.physletb.2007.10.029 | null | gr-qc | null | Discrete symmetries, parity, time reversal, antipodal, and charge conjugation
transformations for spinor field in de Sitter space, are presented in the
ambient space notation, i.e. in a coordinate independent way. The PT and PCT
transformations are also discussed in this notation. The five-current density
is studied ... | [
{
"created": "Sat, 5 Feb 2005 17:28:40 GMT",
"version": "v1"
},
{
"created": "Mon, 9 May 2005 10:37:15 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Moradi",
"S.",
""
],
[
"Rouhani",
"S.",
""
],
[
"Takook",
"M. V.",
""
]
] | Discrete symmetries, parity, time reversal, antipodal, and charge conjugation transformations for spinor field in de Sitter space, are presented in the ambient space notation, i.e. in a coordinate independent way. The PT and PCT transformations are also discussed in this notation. The five-current density is studied an... |
gr-qc/0101125 | Wade Naylor | Ian G Moss and Wade Naylor | Diagrams for heat kernel expansions | 17 pages, 4 figures, ReVTeX | Class.Quant.Grav. 16 (1999) 2611-2624 | 10.1088/0264-9381/16/8/304 | null | gr-qc | null | A diagramatic heat kernel expansion technique is presented. The method is
especially well suited to the small-derivative expansion of the heat kernel,
but it can also be used to reproduce the results obtained by the approach known
as covariant perturbation theory. The new technique gives an expansion for the
heat ker... | [
{
"created": "Wed, 31 Jan 2001 10:39:45 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Moss",
"Ian G",
""
],
[
"Naylor",
"Wade",
""
]
] | A diagramatic heat kernel expansion technique is presented. The method is especially well suited to the small-derivative expansion of the heat kernel, but it can also be used to reproduce the results obtained by the approach known as covariant perturbation theory. The new technique gives an expansion for the heat kerne... |
2401.10025 | Jeferson de Oliveira | Jeferson de Oliveira, R. D. B. Fontana and A. B. Pavan | Aspects of regular and singular
electromagnetic-generalized-quasitopological-gravities black holes in (2+1)
dimensions | 26 pages, 5 figures. References added | Phys.Rev.D 109 (2024) 2, 024027 | 10.1103/PhysRevD.109.024027 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate quasitopological black holes in $(2+1)$ dimensions in the
context of electromagnetic-generalized-quasitopological-gravities (EM-GQT). For
three different families of geometries of quasitopological nature, we study the
causal structure and their response to a probe scalar field. To linear order,
we veri... | [
{
"created": "Thu, 18 Jan 2024 14:50:36 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Jan 2024 14:01:20 GMT",
"version": "v2"
}
] | 2024-01-30 | [
[
"de Oliveira",
"Jeferson",
""
],
[
"Fontana",
"R. D. B.",
""
],
[
"Pavan",
"A. B.",
""
]
] | We investigate quasitopological black holes in $(2+1)$ dimensions in the context of electromagnetic-generalized-quasitopological-gravities (EM-GQT). For three different families of geometries of quasitopological nature, we study the causal structure and their response to a probe scalar field. To linear order, we verify... |
1006.4150 | Bahram Mashhoon | Bahram Mashhoon | Necessity of Acceleration-Induced Nonlocality | 12 pages; v2: improved version accepted for publication in Ann. Phys.
(Berlin) | Annalen Phys.523:226-234,2011 | 10.1002/andp.201010464 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The purpose of this paper is to explain clearly why nonlocality must be an
essential part of the theory of relativity. In the standard local version of
this theory, Lorentz invariance is extended to accelerated observers by
assuming that they are pointwise inertial. This locality postulate is exact
when dealing with ... | [
{
"created": "Mon, 21 Jun 2010 19:51:02 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Nov 2010 21:34:27 GMT",
"version": "v2"
}
] | 2011-04-07 | [
[
"Mashhoon",
"Bahram",
""
]
] | The purpose of this paper is to explain clearly why nonlocality must be an essential part of the theory of relativity. In the standard local version of this theory, Lorentz invariance is extended to accelerated observers by assuming that they are pointwise inertial. This locality postulate is exact when dealing with ph... |
gr-qc/9809016 | Alejandro Perez | Ezra T. Newman and Alejandro Perez | Characteristic Surface Data for the Eikonal Equation | 16 pages, no figures, Scientific Work-Place 2.5, tex, Corrected typos | J.Math.Phys. 40 (1999) 1093-1102 | 10.1063/1.532708 | null | gr-qc | null | A method of solving the eikonal equation, in either flat or curved
space-times, with arbitrary Cauchy data, is extended to the case of data given
on a characteristic surface. We find a beautiful relationship between the
Cauchy and characteristic data for the same solution, namely they are related
by a Legendre transf... | [
{
"created": "Thu, 3 Sep 1998 17:54:21 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Sep 1998 21:46:30 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Newman",
"Ezra T.",
""
],
[
"Perez",
"Alejandro",
""
]
] | A method of solving the eikonal equation, in either flat or curved space-times, with arbitrary Cauchy data, is extended to the case of data given on a characteristic surface. We find a beautiful relationship between the Cauchy and characteristic data for the same solution, namely they are related by a Legendre transfor... |
1509.05131 | Rashmi Uniyal | Ravi Shankar Kuniyal, Rashmi Uniyal, Hemwati Nandan and K. D. Purohit | Null Geodesics in a Magnetically Charged Stringy Black Hole Spacetime | 21 pages, 13 captioned figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the geodesic motion of massless test particles in the background of
a magnetic charged black hole spacetime in four dimensions in dilaton-Maxwell
gravity. The behaviour of effective potential in view of the different values
of black hole parameters is analysed in the equatorial plane. The possible
orbits for... | [
{
"created": "Thu, 17 Sep 2015 05:45:03 GMT",
"version": "v1"
}
] | 2015-09-18 | [
[
"Kuniyal",
"Ravi Shankar",
""
],
[
"Uniyal",
"Rashmi",
""
],
[
"Nandan",
"Hemwati",
""
],
[
"Purohit",
"K. D.",
""
]
] | We study the geodesic motion of massless test particles in the background of a magnetic charged black hole spacetime in four dimensions in dilaton-Maxwell gravity. The behaviour of effective potential in view of the different values of black hole parameters is analysed in the equatorial plane. The possible orbits for n... |
1106.1785 | Muhammad Jamil Amir | M. Jamil Amir, Sarfraz Ali and Tariq Ismaeel | Energy-Momentum Distribution of Non-Static Plane Symmetric Spacetimes in
GR and TPT | 18 pages | Chinese J of Physics, 50(01), 2012, p-14 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is devoted to explore the energy-momentum of non-static plane
symmetric spacetimes in the context of General Relativity and teleparallel
theory of gravity. For this purpose, we use four prescriptions, namely,
Einstein, Landau-Lifshitz, Bergmann-Thomson and M{\o}ller in both theories. It
is shown that the r... | [
{
"created": "Thu, 9 Jun 2011 12:13:28 GMT",
"version": "v1"
}
] | 2013-12-06 | [
[
"Amir",
"M. Jamil",
""
],
[
"Ali",
"Sarfraz",
""
],
[
"Ismaeel",
"Tariq",
""
]
] | This paper is devoted to explore the energy-momentum of non-static plane symmetric spacetimes in the context of General Relativity and teleparallel theory of gravity. For this purpose, we use four prescriptions, namely, Einstein, Landau-Lifshitz, Bergmann-Thomson and M{\o}ller in both theories. It is shown that the res... |
2101.00271 | Swagat Saurav Mishra | Swagat S. Mishra, Varun Sahni and Alexei A. Starobinsky | Curing inflationary degeneracies using reheating predictions and relic
gravitational waves | 41 pages, 13 figures, some clarifications and additional references.
Matches published version in JCAP | null | 10.1088/1475-7516/2021/05/075 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that the inflationary scenario often displays different sets
of degeneracies in its predictions for CMB observables. These degeneracies
usually arise either because multiple inflationary models predict similar
values for the scalar spectral index $n_{_S}$ and the tensor-to-scalar ratio
$r$, or becaus... | [
{
"created": "Fri, 1 Jan 2021 17:17:40 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Mar 2021 14:36:07 GMT",
"version": "v2"
},
{
"created": "Mon, 31 May 2021 12:09:33 GMT",
"version": "v3"
}
] | 2021-06-01 | [
[
"Mishra",
"Swagat S.",
""
],
[
"Sahni",
"Varun",
""
],
[
"Starobinsky",
"Alexei A.",
""
]
] | It is well known that the inflationary scenario often displays different sets of degeneracies in its predictions for CMB observables. These degeneracies usually arise either because multiple inflationary models predict similar values for the scalar spectral index $n_{_S}$ and the tensor-to-scalar ratio $r$, or because ... |
1104.0449 | Mark Fisher | Mark Fisher, Todd A. Oliynyk | There are no magnetically charged particle-like solutions of the
Einstein Yang-Mills equations for Abelian models | 48 pages, 1 figure | Commun. Math. Phys. 312, 137-177 (2012) | 10.1007/s00220-011-1388-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that there are no magnetically charged particle-like solutions for
Abelian models in Einstein Yang-Mills, but for non-Abelian models the
possibility remains open. An analysis of the Lie algebraic structure of the
Yang-Mills fields is essential to our results. In one key step of our analysis
we use invariant ... | [
{
"created": "Mon, 4 Apr 2011 01:36:14 GMT",
"version": "v1"
}
] | 2012-06-28 | [
[
"Fisher",
"Mark",
""
],
[
"Oliynyk",
"Todd A.",
""
]
] | We prove that there are no magnetically charged particle-like solutions for Abelian models in Einstein Yang-Mills, but for non-Abelian models the possibility remains open. An analysis of the Lie algebraic structure of the Yang-Mills fields is essential to our results. In one key step of our analysis we use invariant po... |
1808.10225 | Killian Martineau | Emanuele Alesci, Aur\'elien Barrau, Gioele Botta, Killian Martineau
and Gabriele Stagno | Phenomenology of Quantum Reduced Loop Gravity in the isotropic
cosmological sector | 18 pages, 12 figures | Phys. Rev. D 98, 106022 (2018) | 10.1103/PhysRevD.98.106022 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum reduced loop gravity is designed to consistently study symmetry
reduced systems within the loop quantum gravity framework. In particular, it
bridges the gap between the effective cosmological models of loop quantum
cosmology and the full theory, addressing the dynamics before the
minisuperspace reduction. Thi... | [
{
"created": "Thu, 30 Aug 2018 11:22:14 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Nov 2018 13:55:52 GMT",
"version": "v2"
}
] | 2018-12-05 | [
[
"Alesci",
"Emanuele",
""
],
[
"Barrau",
"Aurélien",
""
],
[
"Botta",
"Gioele",
""
],
[
"Martineau",
"Killian",
""
],
[
"Stagno",
"Gabriele",
""
]
] | Quantum reduced loop gravity is designed to consistently study symmetry reduced systems within the loop quantum gravity framework. In particular, it bridges the gap between the effective cosmological models of loop quantum cosmology and the full theory, addressing the dynamics before the minisuperspace reduction. This ... |
gr-qc/0504049 | Lucio Baggio | L. Baggio, G. A. Prodi | False discovery rate: setting the probability of false claim of
detection | 7 pages, 3 table, 3 figures. Prepared for the Proceedings of GWDAW 9
(http://lappc-in39.in2p3.fr/GWDAW9) A new section was added with a numerical
example, along with two tables and a figure related to the new section. Many
smaller revisions to improve readibility | Class.Quant.Grav. 22 (2005) S1373-S1380 | 10.1088/0264-9381/22/18/S50 | null | gr-qc | null | When testing multiple hypothesis in a survey --e.g. many different source
locations, template waveforms, and so on-- the final result consists in a set
of confidence intervals, each one at a desired confidence level. But the
probability that at least one of these intervals does not cover the true value
increases with... | [
{
"created": "Tue, 12 Apr 2005 13:23:29 GMT",
"version": "v1"
},
{
"created": "Thu, 26 May 2005 13:03:02 GMT",
"version": "v2"
},
{
"created": "Thu, 28 Jul 2005 18:26:13 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Baggio",
"L.",
""
],
[
"Prodi",
"G. A.",
""
]
] | When testing multiple hypothesis in a survey --e.g. many different source locations, template waveforms, and so on-- the final result consists in a set of confidence intervals, each one at a desired confidence level. But the probability that at least one of these intervals does not cover the true value increases with t... |
0906.5588 | Jonathan Luk | Jonathan Luk | Improved decay for solutions to the linear wave equation on a
Schwarzschild black hole | Remarks and References Added | Annales Henri Poincare 11:805-880,2010 | 10.1007/s00023-010-0043-6 | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that sufficiently regular solutions to the wave equation
$\Box_g\phi=0$ on the exterior of the Schwarzschild black hole obey the
estimates $|\phi|\leq C_\delta v_+^{-{3/2}+\delta}$ and $|\partial_t\phi|\leq
C_{\delta} v_+^{-2+\delta}$ on a compact region of $r$ and along the event
horizon. This is proved wit... | [
{
"created": "Tue, 30 Jun 2009 16:56:28 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Oct 2009 19:48:23 GMT",
"version": "v2"
}
] | 2010-11-09 | [
[
"Luk",
"Jonathan",
""
]
] | We prove that sufficiently regular solutions to the wave equation $\Box_g\phi=0$ on the exterior of the Schwarzschild black hole obey the estimates $|\phi|\leq C_\delta v_+^{-{3/2}+\delta}$ and $|\partial_t\phi|\leq C_{\delta} v_+^{-2+\delta}$ on a compact region of $r$ and along the event horizon. This is proved with ... |
2304.10193 | Takanao Tsuyuki | Yuichiro Sato, Takanao Tsuyuki | Spatially homogeneous solutions of vacuum Einstein equations in general
dimensions | 18 pages, 2 figures | null | null | null | gr-qc hep-th math.DG | http://creativecommons.org/licenses/by/4.0/ | We study time-dependent compactification of extra dimensions. We assume that
the spacetime is spatially homogeneous, and solve the vacuum Einstein equations
without cosmological constant in more than three dimensions. We consider
globally hyperbolic spacetimes in which almost abelian Lie groups act on the
spaces isom... | [
{
"created": "Thu, 20 Apr 2023 10:09:12 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Nov 2023 06:16:39 GMT",
"version": "v2"
},
{
"created": "Wed, 31 Jan 2024 07:24:26 GMT",
"version": "v3"
}
] | 2024-02-01 | [
[
"Sato",
"Yuichiro",
""
],
[
"Tsuyuki",
"Takanao",
""
]
] | We study time-dependent compactification of extra dimensions. We assume that the spacetime is spatially homogeneous, and solve the vacuum Einstein equations without cosmological constant in more than three dimensions. We consider globally hyperbolic spacetimes in which almost abelian Lie groups act on the spaces isomet... |
2312.13935 | Johanna N. Borissova | Johanna N. Borissova, Bianca Dittrich, Kirill Krasnov | Area-metric gravity revisited | v1: 22 pages; v2: minor modifications, content matches version
published in PRD | null | 10.1103/PhysRevD.109.124035 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Area metrics are an intriguing generalization of length metrics which appears
in several quantum-gravity approaches. We describe the space of
diffeomorphism-invariant area-metric actions quadratic in fluctuations and
derivatives. A general theory is found to be specified by four parameters, two
of which are mass para... | [
{
"created": "Thu, 21 Dec 2023 15:29:11 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Jun 2024 18:00:00 GMT",
"version": "v2"
}
] | 2024-06-18 | [
[
"Borissova",
"Johanna N.",
""
],
[
"Dittrich",
"Bianca",
""
],
[
"Krasnov",
"Kirill",
""
]
] | Area metrics are an intriguing generalization of length metrics which appears in several quantum-gravity approaches. We describe the space of diffeomorphism-invariant area-metric actions quadratic in fluctuations and derivatives. A general theory is found to be specified by four parameters, two of which are mass parame... |
1310.1880 | Lars Andersson | Lars Andersson | Cosmological models and stability | Based on a talk at the conference "Relativity and Gravitation, 100
Years after Einstein in Prague", at Charles University, Prague, June 25-29,
2012 | null | 10.1007/978-3-319-06349-2_14 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Principles in the form of heuristic guidelines or generally accepted dogma
play an important role in the development of physical theories. In particular,
philosophical considerations and principles figure prominently in the work of
Albert Einstein. As mentioned in the talk by Jiri Bicak at this conference
Einstein fo... | [
{
"created": "Mon, 7 Oct 2013 18:29:32 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Andersson",
"Lars",
""
]
] | Principles in the form of heuristic guidelines or generally accepted dogma play an important role in the development of physical theories. In particular, philosophical considerations and principles figure prominently in the work of Albert Einstein. As mentioned in the talk by Jiri Bicak at this conference Einstein form... |
2109.05828 | Chen-Kai Qiao | Chen-Kai Qiao and Mi Zhou | The Gravitational Bending of Acoustic Schwarzschild Black Hole | 21 pages, 5 figures, 2 appendices, 2 tables; V2 is minor revision; V3
is major revision; V4: minor revision (astrophysical motivation is included
and small errors are corrected) V5: accepted version | The European Physical Journal C 83 (2023) 4, 271 | 10.1140/epjc/s10052-023-11376-3 | null | gr-qc cond-mat.other | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Acoustic black hole is becoming an attractive topic in recent years, for it
open-up new direction for experimental / observational explorations of black
holes. In this work, the gravitational bending of acoustic Schwarzschild black
hole is investigated. The gravitational deflection angle of particles traveling
along ... | [
{
"created": "Mon, 13 Sep 2021 09:57:27 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Oct 2021 09:46:57 GMT",
"version": "v2"
},
{
"created": "Mon, 27 Dec 2021 15:55:26 GMT",
"version": "v3"
},
{
"created": "Thu, 24 Mar 2022 14:44:00 GMT",
"version": "v4"
},
{
"cr... | 2023-04-11 | [
[
"Qiao",
"Chen-Kai",
""
],
[
"Zhou",
"Mi",
""
]
] | Acoustic black hole is becoming an attractive topic in recent years, for it open-up new direction for experimental / observational explorations of black holes. In this work, the gravitational bending of acoustic Schwarzschild black hole is investigated. The gravitational deflection angle of particles traveling along nu... |
1508.05810 | James Douglass | James W. Douglass | A nonmetric theory of gravitation that is nonsingular at the
Schwarzschild radius | 8 pages, 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A gravitational theory is formulated by considering the physical processes
underlying relativistic dilation of time and contraction of space. It is shown
that the point mass solution of general relativity's field equation - the
Schwarzschild metric - is a weak-field approximation to the more general
Lagrangian result... | [
{
"created": "Mon, 24 Aug 2015 14:07:01 GMT",
"version": "v1"
}
] | 2015-08-25 | [
[
"Douglass",
"James W.",
""
]
] | A gravitational theory is formulated by considering the physical processes underlying relativistic dilation of time and contraction of space. It is shown that the point mass solution of general relativity's field equation - the Schwarzschild metric - is a weak-field approximation to the more general Lagrangian resultin... |
gr-qc/0608084 | Maria Alice Gasparini | Maria Alice Gasparini and Florian Dubath | Matched filter for multi-transducers resonant GW antennas | 15 pages and 4 figures, version accepted for publication in PRD | Phys.Rev.D74:122003,2006 | 10.1103/PhysRevD.74.122003 | null | gr-qc astro-ph | null | We analyze two kinds of matched filters for data output of a spherical
resonant GW detector. In order to filter the data of a real sphere, a strategy
is proposed, firstly using an omnidirectional in-line filter, which is supposed
to select periodograms with excitations, secondly by performing a directional
filter on ... | [
{
"created": "Thu, 17 Aug 2006 12:58:07 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Nov 2006 22:34:29 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Gasparini",
"Maria Alice",
""
],
[
"Dubath",
"Florian",
""
]
] | We analyze two kinds of matched filters for data output of a spherical resonant GW detector. In order to filter the data of a real sphere, a strategy is proposed, firstly using an omnidirectional in-line filter, which is supposed to select periodograms with excitations, secondly by performing a directional filter on su... |
2309.14765 | Asuka Ito | Asuka Ito, Kazunori Kohri, Kazunori Nakayama | Gravitational wave search through electromagnetic telescopes | 11 pages, 4 figures | Prog. Theor. Exp. Phys. 2024 023E03 | 10.1093/ptep/ptae004 | KEK-QUP-2023-0018, KEK-TH-2558, KEK-Cosmo-0327, TU-1205 | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the graviton-photon conversion in the magnetic fields of the Earth,
the Milky Way Galaxy, and intergalactic regions. Requiring that the photon flux
converted from gravitons does not exceed the observed photon flux with
telescopes, we derive upper limits on the stochastic gravitational waves in
frequency rang... | [
{
"created": "Tue, 26 Sep 2023 08:54:58 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Feb 2024 03:03:11 GMT",
"version": "v2"
}
] | 2024-02-22 | [
[
"Ito",
"Asuka",
""
],
[
"Kohri",
"Kazunori",
""
],
[
"Nakayama",
"Kazunori",
""
]
] | We study the graviton-photon conversion in the magnetic fields of the Earth, the Milky Way Galaxy, and intergalactic regions. Requiring that the photon flux converted from gravitons does not exceed the observed photon flux with telescopes, we derive upper limits on the stochastic gravitational waves in frequency ranges... |
2208.00409 | Fabian L\'aszl\'o Konstantin Wagner | Eduardo Guendelman and Fabian Wagner | Momentum gauge fields from curved momentum space through Kaluza-Klein
reduction | 6 pages, no figures, v2: minor clarifications added references,
removed typos - published version | Class.Quant.Grav. 40 (2023) 13, 135007 | 10.1088/1361-6382/acd979 | null | gr-qc hep-ph hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we investigate the relation between curved momentum space and
momentum-dependent gauge fields. While the former is a classic idea that has
been shown to be tied to minimal-length models, the latter constitutes a
relatively recent development in quantum gravity phenomenology. In particular,
the gauge prin... | [
{
"created": "Sun, 31 Jul 2022 10:03:47 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Sep 2023 06:59:46 GMT",
"version": "v2"
}
] | 2023-09-25 | [
[
"Guendelman",
"Eduardo",
""
],
[
"Wagner",
"Fabian",
""
]
] | In this work we investigate the relation between curved momentum space and momentum-dependent gauge fields. While the former is a classic idea that has been shown to be tied to minimal-length models, the latter constitutes a relatively recent development in quantum gravity phenomenology. In particular, the gauge princi... |
2211.04681 | Chongoh Lee | Seoktae Koh, Chong Oh Lee | Configuration entropy and instability of accelerating black hole in AdS | 7 pages, 7 figures, typos corrected, added comments, version to
appear in EPJ Plus | null | 10.1140/epjp/s13360-023-04033-x | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider an accelerating black hole with a negative cosmological constant
in four-dimensional spacetime. There are two configurations such as a black
string (BS) phase when a mass parameter is zero and a black hole (BH) phase
when a mass parameter is non-zero. We investigate their stability via the
configuration e... | [
{
"created": "Wed, 9 Nov 2022 04:45:54 GMT",
"version": "v1"
},
{
"created": "Fri, 19 May 2023 01:28:50 GMT",
"version": "v2"
}
] | 2023-05-24 | [
[
"Koh",
"Seoktae",
""
],
[
"Lee",
"Chong Oh",
""
]
] | We consider an accelerating black hole with a negative cosmological constant in four-dimensional spacetime. There are two configurations such as a black string (BS) phase when a mass parameter is zero and a black hole (BH) phase when a mass parameter is non-zero. We investigate their stability via the configuration ent... |
0912.4922 | Don N. Page | Don N. Page | Some Gravitational Instantons | This is a paper I presented at a conference in Moscow in December
1978, but it was never published | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | All known gravitational instantons with $\Lambda > 0$ ($S^4, CP^2, S^2 \times
S^2$ and $CP # \overline{CP}^2$) are described. They are all special cases of
the Taub-NUT-$\Lambda$ local solution. Hence they are Type D and are locally
conformably K\"ahler. They all may be expressed in Bianchi IX form and have
four or m... | [
{
"created": "Sun, 27 Dec 2009 00:26:00 GMT",
"version": "v1"
}
] | 2009-12-31 | [
[
"Page",
"Don N.",
""
]
] | All known gravitational instantons with $\Lambda > 0$ ($S^4, CP^2, S^2 \times S^2$ and $CP # \overline{CP}^2$) are described. They are all special cases of the Taub-NUT-$\Lambda$ local solution. Hence they are Type D and are locally conformably K\"ahler. They all may be expressed in Bianchi IX form and have four or mor... |
2007.09925 | Jackson Levi Said | Maria Caruana, Gabriel Farrugia, Jackson Levi Said | Cosmological bouncing solutions in f(T,B) gravity | null | Eur. Phys. J. C 80, 640 (2020) | 10.1140/epjc/s10052-020-8204-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Teleparallel Gravity offers the possibility of reformulating gravity in terms
of torsion by exchanging the Levi-Civita connection with the Weitzenb\"ock
connection which describes torsion rather than curvature. Surprisingly,
Teleparallel Gravity can be formulated to be equivalent to general relativity
for a appropria... | [
{
"created": "Mon, 20 Jul 2020 08:16:51 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jul 2020 06:35:36 GMT",
"version": "v2"
}
] | 2020-07-23 | [
[
"Caruana",
"Maria",
""
],
[
"Farrugia",
"Gabriel",
""
],
[
"Said",
"Jackson Levi",
""
]
] | Teleparallel Gravity offers the possibility of reformulating gravity in terms of torsion by exchanging the Levi-Civita connection with the Weitzenb\"ock connection which describes torsion rather than curvature. Surprisingly, Teleparallel Gravity can be formulated to be equivalent to general relativity for a appropriate... |
1709.04365 | Muhammad Zaeem-Ul-Haq Bhatti | Z. Yousaf, M. Zaeem-ul-Haq Bhatti, Ume Farwa | Stability Analysis of Stellar Radiating Filaments | 28 pages, no figure | Class. Quantum Grav. 34, 145002 (2017) | 10.1088/1361-6382/aa73b9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The aim of this paper is to perform stability analysis of anisotropic
dissipative cylindrical collapsing model in $f(R,T,R_{\mu\nu} T^{\mu\nu})$
gravity. In this context, the modified version of hydrodynamical equation is
explored by means of dynamical equations and radial perturbation scheme. We
examined the role of... | [
{
"created": "Tue, 12 Sep 2017 04:11:41 GMT",
"version": "v1"
}
] | 2017-09-14 | [
[
"Yousaf",
"Z.",
""
],
[
"Bhatti",
"M. Zaeem-ul-Haq",
""
],
[
"Farwa",
"Ume",
""
]
] | The aim of this paper is to perform stability analysis of anisotropic dissipative cylindrical collapsing model in $f(R,T,R_{\mu\nu} T^{\mu\nu})$ gravity. In this context, the modified version of hydrodynamical equation is explored by means of dynamical equations and radial perturbation scheme. We examined the role of a... |
1801.06528 | Manuel Hohmann | Manuel Hohmann | Scalar-torsion theories of gravity I: general formalism and conformal
transformations | 11 pages, no figures | Phys. Rev. D 98, 064002 (2018) | 10.1103/PhysRevD.98.064002 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the most general class of teleparallel scalar-torsion theories of
gravity in their covariant formulation. The only restrictions we impose are the
invariance of the action under diffeomorphisms and local Lorentz
transformations, as well as vanishing direct coupling of the matter fields to
the teleparallel s... | [
{
"created": "Fri, 19 Jan 2018 18:46:13 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Feb 2018 18:19:08 GMT",
"version": "v2"
}
] | 2018-09-12 | [
[
"Hohmann",
"Manuel",
""
]
] | We discuss the most general class of teleparallel scalar-torsion theories of gravity in their covariant formulation. The only restrictions we impose are the invariance of the action under diffeomorphisms and local Lorentz transformations, as well as vanishing direct coupling of the matter fields to the teleparallel spi... |
gr-qc/0702146 | Geoffrey Lovelace | Chao Li and Geoffrey Lovelace | A generalization of Ryan's theorem: probing tidal coupling with
gravitational waves from nearly circular, nearly equatorial,
extreme-mass-ratio inspirals | 10 pages, 1 figure, submitted to Phys. Rev. D | Phys.Rev.D77:064022,2008 | 10.1103/PhysRevD.77.064022 | null | gr-qc | null | Extreme-mass-ratio inspirals (EMRIs) and intermediate-mass-ratio inspirals
(IMRIs)--binaries in which a stellar-mass object spirals into a massive black
hole or other massive, compact body--are important sources of gravitational
waves for LISA and LIGO, respectively. Thorne has speculated that the waves
from EMRIs an... | [
{
"created": "Wed, 28 Feb 2007 08:24:57 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Li",
"Chao",
""
],
[
"Lovelace",
"Geoffrey",
""
]
] | Extreme-mass-ratio inspirals (EMRIs) and intermediate-mass-ratio inspirals (IMRIs)--binaries in which a stellar-mass object spirals into a massive black hole or other massive, compact body--are important sources of gravitational waves for LISA and LIGO, respectively. Thorne has speculated that the waves from EMRIs and ... |
gr-qc/9807045 | Parthasarathi Majumdar | Parthasarathi Majumdar | Black Hole Entropy and Quantum Gravity | 13 pages, Revtex, 5 eps figures. Invited talk at National Symposium
on Trends and Perspectives in Theoretical Physics, IACS, Calcutta, India,
April, 1998. One reference added | null | null | IMSc/98/07/38 | gr-qc hep-th | null | An elementary introduction is given to the problem of black hole entropy as
formulated by Bekenstein and Hawking. The information theoretic basis of
Bekenstein's formulation is briefly reviewed and compared with Hawking's
approach. The issue of calculating the entropy by actual counting of
microstates is taken up nex... | [
{
"created": "Fri, 17 Jul 1998 12:07:30 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Jul 1998 07:21:57 GMT",
"version": "v2"
},
{
"created": "Wed, 29 Jul 1998 11:01:44 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Majumdar",
"Parthasarathi",
""
]
] | An elementary introduction is given to the problem of black hole entropy as formulated by Bekenstein and Hawking. The information theoretic basis of Bekenstein's formulation is briefly reviewed and compared with Hawking's approach. The issue of calculating the entropy by actual counting of microstates is taken up next ... |
2204.00109 | Nosratollah Jafari Sonbolabadi | Nosrtollah Jafari | Rigidity and Parallelism in the spacetime | 11 pages | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | The effect of the linear-fractional transformations on the parallel lines in
the spacetime has been studied. Fock-Lorentz transformations maps a line to a
line, from which one can obtain the combinations rule for the velocities in the
Fock-Lorentz transformations. Rigidity is defined as a consequences of holding
para... | [
{
"created": "Thu, 31 Mar 2022 21:41:56 GMT",
"version": "v1"
}
] | 2022-04-04 | [
[
"Jafari",
"Nosrtollah",
""
]
] | The effect of the linear-fractional transformations on the parallel lines in the spacetime has been studied. Fock-Lorentz transformations maps a line to a line, from which one can obtain the combinations rule for the velocities in the Fock-Lorentz transformations. Rigidity is defined as a consequences of holding parall... |
gr-qc/0205127 | Reinhard Meinel | R. Meinel | Black holes: A physical route to the Kerr metric | 14 pages, 1 table, 4 figures, accepted for publication in Annalen der
Physik (Leipzig) | Annalen Phys.11:509-521,2002 | 10.1002/andp.20025140704 | null | gr-qc astro-ph hep-th | null | As a consequence of Birkhoff's theorem, the exterior gravitational field of a
spherically symmetric star or black hole is always given by the Schwarzschild
metric. In contrast, the exterior gravitational field of a rotating
(axisymmetric) star differs, in general, from the Kerr metric, which describes
a stationary, r... | [
{
"created": "Thu, 30 May 2002 11:30:16 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Jun 2002 07:26:39 GMT",
"version": "v2"
}
] | 2022-09-22 | [
[
"Meinel",
"R.",
""
]
] | As a consequence of Birkhoff's theorem, the exterior gravitational field of a spherically symmetric star or black hole is always given by the Schwarzschild metric. In contrast, the exterior gravitational field of a rotating (axisymmetric) star differs, in general, from the Kerr metric, which describes a stationary, rot... |
0712.4157 | Valeri Frolov | Valeri P. Frolov | Hidden Symmetries of Higher-Dimensional Black Hole Spacetimes | 10 pages, Prepared for the Proceedings of the ICGA8 conference | Prog.Theor.Phys.Suppl.172:210-219,2008 | 10.1143/PTPS.172.210 | null | gr-qc | null | The paper contains a brief review of recent results on hidden symmetries in
higher dimensional black hole spacetimes. We show how the existence of a
principal CKY tensor (that is a closed non-degenerate conformal Killing-Yano
2-form) allows one to generate a `tower' of Killing-Yano and Killing tensors
responcible for... | [
{
"created": "Wed, 26 Dec 2007 23:33:43 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Frolov",
"Valeri P.",
""
]
] | The paper contains a brief review of recent results on hidden symmetries in higher dimensional black hole spacetimes. We show how the existence of a principal CKY tensor (that is a closed non-degenerate conformal Killing-Yano 2-form) allows one to generate a `tower' of Killing-Yano and Killing tensors responcible for h... |
2306.13871 | Chao Zhang | Chao Zhang, Ning Dai and Dicong Liang | Importance of including higher signal harmonics in the modeling of
extreme mass-ratio inspirals | 23 pages, 6 figures; PRD accepted | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extreme mass-ratio inspirals (EMRIs) are the most potential sources
detectable by the Laser Interferometer Space Antenna (LISA). To analyze the
influence of higher harmonics on parameter estimation for EMRIs efficiently, we
use the waveform model that the phase trajectories are relativistic flux-based
adiabatic traje... | [
{
"created": "Sat, 24 Jun 2023 05:41:08 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Aug 2023 01:57:57 GMT",
"version": "v2"
}
] | 2023-08-31 | [
[
"Zhang",
"Chao",
""
],
[
"Dai",
"Ning",
""
],
[
"Liang",
"Dicong",
""
]
] | Extreme mass-ratio inspirals (EMRIs) are the most potential sources detectable by the Laser Interferometer Space Antenna (LISA). To analyze the influence of higher harmonics on parameter estimation for EMRIs efficiently, we use the waveform model that the phase trajectories are relativistic flux-based adiabatic traject... |
2304.08030 | Zhan-Feng Mai | Zhan-Feng Mai, Rui Xu, Dicong Liang, Lijing Shao | Extended thermodynamics of the bumblebee black holes | 10 pages, 3 figures; accepted for publication in PRD | Phys. Rev. D 108 (2023) 024004 | 10.1103/PhysRevD.108.024004 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | As a vector-tensor theory including nonminimal coupling between the Ricci
tensor and a vector field, the bumblebee gravity is a potential theory to test
Lorentz symmetry violation. Recently, a new class of numerical spherical black
holes in the bumblebee theory was constructed. In this paper, we investigate
the assoc... | [
{
"created": "Mon, 17 Apr 2023 07:25:56 GMT",
"version": "v1"
},
{
"created": "Sat, 1 Jul 2023 13:28:17 GMT",
"version": "v2"
}
] | 2023-07-14 | [
[
"Mai",
"Zhan-Feng",
""
],
[
"Xu",
"Rui",
""
],
[
"Liang",
"Dicong",
""
],
[
"Shao",
"Lijing",
""
]
] | As a vector-tensor theory including nonminimal coupling between the Ricci tensor and a vector field, the bumblebee gravity is a potential theory to test Lorentz symmetry violation. Recently, a new class of numerical spherical black holes in the bumblebee theory was constructed. In this paper, we investigate the associa... |
2210.04769 | Qian Hu | Qian Hu and John Veitch | Accumulating errors in tests of general relativity with gravitational
waves: overlapping signals and inaccurate waveforms | 13 pages, 6 figures | The Astrophysical Journal, 945, 103 (2023) | 10.3847/1538-4357/acbc18 | ET-0211A-22 | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Observations of gravitational waves (GWs) from compact binary coalescences
provide powerful tests of general relativity (GR), but systematic errors in
data analysis could lead to incorrect scientific conclusions. This issue is
especially serious in the third-generation GW detectors in which the
signal-to-noise ratio ... | [
{
"created": "Mon, 10 Oct 2022 15:27:38 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Feb 2023 17:04:06 GMT",
"version": "v2"
}
] | 2023-03-16 | [
[
"Hu",
"Qian",
""
],
[
"Veitch",
"John",
""
]
] | Observations of gravitational waves (GWs) from compact binary coalescences provide powerful tests of general relativity (GR), but systematic errors in data analysis could lead to incorrect scientific conclusions. This issue is especially serious in the third-generation GW detectors in which the signal-to-noise ratio (S... |
1607.04329 | Saibal Ray | Farook Rahaman, Nupur Paul, Ayan Banerjee, S.S. De, Saibal Ray and
A.A. Usmani | The Finslerian wormhole models | 9 pages and 7 figues | Eur. Phys. J. C (2016) 76:246 | 10.1140/epjc/s10052-016-4066-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present models of wormhole under the Finslerian structure of spacetime.
This is a sequel of our previous work (Eur Phys J 75:564, 2015) where we
constructed a toy model for compact stars based on the Finslerian spacetime
geometry. In the present investigation, a wide variety of solutions are
obtained that explore ... | [
{
"created": "Sat, 9 Jul 2016 07:36:03 GMT",
"version": "v1"
}
] | 2016-07-18 | [
[
"Rahaman",
"Farook",
""
],
[
"Paul",
"Nupur",
""
],
[
"Banerjee",
"Ayan",
""
],
[
"De",
"S. S.",
""
],
[
"Ray",
"Saibal",
""
],
[
"Usmani",
"A. A.",
""
]
] | We present models of wormhole under the Finslerian structure of spacetime. This is a sequel of our previous work (Eur Phys J 75:564, 2015) where we constructed a toy model for compact stars based on the Finslerian spacetime geometry. In the present investigation, a wide variety of solutions are obtained that explore wo... |
1403.2961 | Alessandro Tronconi | Alexander Y. Kamenshchik, Alessandro Tronconi, Giovanni Venturi | Signatures of Quantum Gravity in a Born-Oppenheimer Context | 19 pages, 2 figures; final version accepted for publication in PLB | null | 10.1016/j.physletb.2014.05.028 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We solve a general equation describing the lowest order corrections arising
from quantum gravitational effects to the spectrum of cosmological
fluctuations. The spectra of scalar and tensor perturbations are calculated to
first order in the slow roll approximation and the results are compared with
the most recent obs... | [
{
"created": "Wed, 12 Mar 2014 15:03:55 GMT",
"version": "v1"
},
{
"created": "Tue, 20 May 2014 16:10:02 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Kamenshchik",
"Alexander Y.",
""
],
[
"Tronconi",
"Alessandro",
""
],
[
"Venturi",
"Giovanni",
""
]
] | We solve a general equation describing the lowest order corrections arising from quantum gravitational effects to the spectrum of cosmological fluctuations. The spectra of scalar and tensor perturbations are calculated to first order in the slow roll approximation and the results are compared with the most recent obser... |
0910.5931 | Manuel Tessmer | Manuel Tessmer | Gravitational waveforms from unequal-mass binaries with arbitrary spins
under leading order spin-orbit coupling | 13 pages, 2 figures, submitted to PRD on 11 Sep. 2009 | null | 10.1103/PhysRevD.80.124034 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper generalizes the structure of gravitational waves from orbiting
spinning binaries under leading order spin-orbit coupling, as given in the work
by K\"onigsd\"orffer and Gopakumar [PRD 71, 024039 (2005)] for single-spin and
equal-mass binaries, to unequal-mass binaries and arbitrary spin
configurations. The o... | [
{
"created": "Fri, 30 Oct 2009 18:03:09 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Dec 2009 13:30:11 GMT",
"version": "v2"
}
] | 2015-05-14 | [
[
"Tessmer",
"Manuel",
""
]
] | The paper generalizes the structure of gravitational waves from orbiting spinning binaries under leading order spin-orbit coupling, as given in the work by K\"onigsd\"orffer and Gopakumar [PRD 71, 024039 (2005)] for single-spin and equal-mass binaries, to unequal-mass binaries and arbitrary spin configurations. The orb... |
gr-qc/9604003 | T. Jacobson | Ted Jacobson | 1+1 Sector of 3+1 Gravity | 9 pages, plain Latex, no figures | Class.Quant.Grav.13:L111-L116,1996; Erratum-ibid.13:3269,1996 | 10.1088/0264-9381/13/8/003 | THU-96/18 | gr-qc hep-th | null | The rank--1 sector of classical Ashtekar gravity is considered, motivated by
the degeneracy of the metric along the Wilson lines in quantum loop states. It
is found that the lines behave like 1+1 dimensional spacetimes with a pair of
massless complex fields propagating along them. The inclusion of matter and
extensio... | [
{
"created": "Mon, 1 Apr 1996 15:57:45 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Jacobson",
"Ted",
""
]
] | The rank--1 sector of classical Ashtekar gravity is considered, motivated by the degeneracy of the metric along the Wilson lines in quantum loop states. It is found that the lines behave like 1+1 dimensional spacetimes with a pair of massless complex fields propagating along them. The inclusion of matter and extension ... |
gr-qc/0401092 | Richard Price | Elspeth W. Allen, Elizabeth Buckmiller, Lior M. Burko, Richard H.Price | Radiation tails and boundary conditions for black hole evolutions | submitted to Phys. Rev. D | Phys.Rev. D70 (2004) 044038 | 10.1103/PhysRevD.70.044038 | null | gr-qc | null | In numerical computations of Einstein's equations for black hole spacetimes,
it will be necessary to use approximate boundary conditions at a finite
distance from the holes. We point out here that ``tails,'' the inverse
power-law decrease of late-time fields, cannot be expected for such
computations. We present compu... | [
{
"created": "Wed, 21 Jan 2004 22:32:25 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Allen",
"Elspeth W.",
""
],
[
"Buckmiller",
"Elizabeth",
""
],
[
"Burko",
"Lior M.",
""
],
[
"Price",
"Richard H.",
""
]
] | In numerical computations of Einstein's equations for black hole spacetimes, it will be necessary to use approximate boundary conditions at a finite distance from the holes. We point out here that ``tails,'' the inverse power-law decrease of late-time fields, cannot be expected for such computations. We present computa... |
1306.1024 | Muhammad Sharif | M. Sharif and Z. Yousaf | Shearfree Spherically Symmetric Fluid Models | 9 pages, no figure | Chin. Phys. Lett. 29(2012)050403 (China) | 10.1088/0256-307X/29/5/050403 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We try to find some exact analytical models of spherically symmetric
spacetime of collapsing fluid under shearfree condition. We consider two types
of solutions: one is to impose a condition on the mass function while the other
is to restrict the pressure. We obtain totally of five exact models, and some
of them sati... | [
{
"created": "Wed, 5 Jun 2013 09:12:49 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Sharif",
"M.",
""
],
[
"Yousaf",
"Z.",
""
]
] | We try to find some exact analytical models of spherically symmetric spacetime of collapsing fluid under shearfree condition. We consider two types of solutions: one is to impose a condition on the mass function while the other is to restrict the pressure. We obtain totally of five exact models, and some of them satisf... |
gr-qc/9906108 | Kip S. Thorne | Vladimir B. Braginsky (1), Mikhail L. Gorodetsky (1), Farid Ya.
Khalili (1) and Kip S. Thorne (2) ((1) Physics Faculty, Moscow State
University, (2) Theoretical Astrophysics, California Institute of Technology) | Dual-Resonator Speed Meter for a Free Test Mass | RevTex: 13 pages with 4 embedded figures (two .eps format and two
drawn in TeX); Submitted to Physical Review D | Phys.Rev. D61 (2000) 044002 | 10.1103/PhysRevD.61.044002 | GRP-516 | gr-qc quant-ph | null | A description and analysis are given of a ``speed meter'' for monitoring a
classical force that acts on a test mass. This speed meter is based on two
microwave resonators (``dual resonators''), one of which couples evanescently
to the position of the test mass. The sloshing of the resulting signal between
the resonat... | [
{
"created": "Sat, 26 Jun 1999 02:18:17 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Braginsky",
"Vladimir B.",
""
],
[
"Gorodetsky",
"Mikhail L.",
""
],
[
"Khalili",
"Farid Ya.",
""
],
[
"Thorne",
"Kip S.",
""
]
] | A description and analysis are given of a ``speed meter'' for monitoring a classical force that acts on a test mass. This speed meter is based on two microwave resonators (``dual resonators''), one of which couples evanescently to the position of the test mass. The sloshing of the resulting signal between the resonator... |
gr-qc/9709071 | Hans-Juergen Schmidt | H.-J. Schmidt | A new proof of Birkhoff's theorem | 17 pages, LaTeX, no figures, Grav. and Cosm. in print | Grav.Cosmol. 3 (1997) 185-190 | null | Preprint UNIPO-MATH-97-September-25 | gr-qc | null | Assuming SO(3)-spherical symmetry, the 4-dimensional Einstein equation
reduces to an equation conformally related to the field equation for
2-dimensional gravity following from the Lagrangian L = R^(1/3).
Solutions for 2-dimensional gravity always possess a local isometry because
the traceless part of its Ricci ten... | [
{
"created": "Fri, 26 Sep 1997 15:54:53 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Schmidt",
"H. -J.",
""
]
] | Assuming SO(3)-spherical symmetry, the 4-dimensional Einstein equation reduces to an equation conformally related to the field equation for 2-dimensional gravity following from the Lagrangian L = R^(1/3). Solutions for 2-dimensional gravity always possess a local isometry because the traceless part of its Ricci tensor ... |
2312.11419 | Orlando Luongo | Alessio Belfiglio, Orlando Luongo, Stefano Mancini | Superhorizon entanglement from inflationary particle production | 11 pages, 2 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate entanglement generation between the sub- and super-Hubble
modes of inflaton fluctuations, in the context of particle production from
perturbations during inflation. We consider a large-field inflationary scenario
where inflation is driven by a vacuum energy symmetry breaking potential and
the scalar in... | [
{
"created": "Mon, 18 Dec 2023 18:21:06 GMT",
"version": "v1"
}
] | 2023-12-19 | [
[
"Belfiglio",
"Alessio",
""
],
[
"Luongo",
"Orlando",
""
],
[
"Mancini",
"Stefano",
""
]
] | We investigate entanglement generation between the sub- and super-Hubble modes of inflaton fluctuations, in the context of particle production from perturbations during inflation. We consider a large-field inflationary scenario where inflation is driven by a vacuum energy symmetry breaking potential and the scalar infl... |
gr-qc/0305033 | Wojciech Czaja | Marek Szydlowski, Wojciech Czaja | Particle-Like Description in Quintessential Cosmology | 35 pages, 26 figures, RevTeX4, some applications of our treatment to
investigation of quintessence models were added | Phys.Rev. D69 (2004) 083518 | 10.1103/PhysRevD.69.083518 | null | gr-qc | null | Assuming equation of state for quintessential matter: $p=w(z)\rho$, we
analyse dynamical behaviour of the scale factor in FRW cosmologies. It is shown
that its dynamics is formally equivalent to that of a classical particle under
the action of 1D potential $V(a)$. It is shown that Hamiltonian method can be
easily imp... | [
{
"created": "Thu, 8 May 2003 23:14:05 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Jul 2003 10:00:39 GMT",
"version": "v2"
},
{
"created": "Thu, 16 Oct 2003 12:04:17 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Szydlowski",
"Marek",
""
],
[
"Czaja",
"Wojciech",
""
]
] | Assuming equation of state for quintessential matter: $p=w(z)\rho$, we analyse dynamical behaviour of the scale factor in FRW cosmologies. It is shown that its dynamics is formally equivalent to that of a classical particle under the action of 1D potential $V(a)$. It is shown that Hamiltonian method can be easily imple... |
1312.4532 | Leo Stein | Leo C. Stein, Kent Yagi, and Nicolas Yunes | Three-Hair Relations for Rotating Stars: Nonrelativistic Limit | 5 pages, 3 figures. Updated to match version published in ApJ | 2014 ApJ 788 15 | 10.1088/0004-637X/788/1/15 | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational field outside of astrophysical black holes is completely
described by their mass and spin frequency, as expressed by the no-hair
theorems. These theorems assume vacuum spacetimes, and thus they apply only to
black holes and not to stars. Despite this, we analytically find that the
gravitational pote... | [
{
"created": "Mon, 16 Dec 2013 21:00:00 GMT",
"version": "v1"
},
{
"created": "Sat, 17 May 2014 15:55:02 GMT",
"version": "v2"
}
] | 2014-05-20 | [
[
"Stein",
"Leo C.",
""
],
[
"Yagi",
"Kent",
""
],
[
"Yunes",
"Nicolas",
""
]
] | The gravitational field outside of astrophysical black holes is completely described by their mass and spin frequency, as expressed by the no-hair theorems. These theorems assume vacuum spacetimes, and thus they apply only to black holes and not to stars. Despite this, we analytically find that the gravitational potent... |
1808.00847 | Markus Rummel | C.P. Burgess, Ryan Plestid and Markus Rummel | Effective Field Theory of Black Hole Echoes | v3: clarified role of IR Black Hole fixed point w.r.t. parameter \xi.
v2: now published in JHEP; references added, changed definition of time delay
and phase in echo spacing | 10.1007/JHEP09(2018)113 | 10.1007/JHEP09(2018)113 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave `echoes' during black-hole merging events have been
advocated as possible signals of modifications to gravity in the strong-field
(but semiclassical) regime. In these proposals the observable effect comes
entirely from the appearance of nonzero reflection probability at the horizon,
which vanishes ... | [
{
"created": "Thu, 2 Aug 2018 15:04:20 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Sep 2018 11:02:19 GMT",
"version": "v2"
},
{
"created": "Sun, 31 May 2020 00:13:47 GMT",
"version": "v3"
}
] | 2020-06-02 | [
[
"Burgess",
"C. P.",
""
],
[
"Plestid",
"Ryan",
""
],
[
"Rummel",
"Markus",
""
]
] | Gravitational wave `echoes' during black-hole merging events have been advocated as possible signals of modifications to gravity in the strong-field (but semiclassical) regime. In these proposals the observable effect comes entirely from the appearance of nonzero reflection probability at the horizon, which vanishes fo... |
gr-qc/0305009 | Alberto Saa | L.R. Abramo, L. Brenig, E. Gunzig, and A. Saa | A note on dualities in Einstein's gravity in the presence of a
non-minimally coupled scalar field | 12 pages | Mod.Phys.Lett. A18 (2003) 1043 | 10.1142/S0217732303010958 | null | gr-qc | null | We show that the action of Einstein's gravity with a scalar field coupled in
a generic way to spacetime curvature is invariant under a particular set of
conformal transformations. These transformations relate dual theories for which
the effective couplings of the theory are scaled uniformly. In the simplest
case, thi... | [
{
"created": "Fri, 2 May 2003 17:05:24 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Abramo",
"L. R.",
""
],
[
"Brenig",
"L.",
""
],
[
"Gunzig",
"E.",
""
],
[
"Saa",
"A.",
""
]
] | We show that the action of Einstein's gravity with a scalar field coupled in a generic way to spacetime curvature is invariant under a particular set of conformal transformations. These transformations relate dual theories for which the effective couplings of the theory are scaled uniformly. In the simplest case, this ... |
1903.08251 | Foad Parsaei | Foad Parsaei and Sara Rastgoo | Asymptotically flat wormhole solutions with variable equation-of-state
parameter | 11 pages, 10 figures, two new solutions, NEC violation discussion and
references added | Phys. Rev. D 99, 104037 (2019) | 10.1103/PhysRevD.99.104037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study exact wormhole solutions in the framework of general
relativity with a general equation of state that reduced to a linear equation
of state asymptotically. By considering a special shape function, we find
classes of solutions which are asymptotically flat. We study the violation of
NEC as the ... | [
{
"created": "Tue, 19 Mar 2019 20:39:09 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Apr 2019 10:02:54 GMT",
"version": "v2"
}
] | 2019-05-22 | [
[
"Parsaei",
"Foad",
""
],
[
"Rastgoo",
"Sara",
""
]
] | In this paper, we study exact wormhole solutions in the framework of general relativity with a general equation of state that reduced to a linear equation of state asymptotically. By considering a special shape function, we find classes of solutions which are asymptotically flat. We study the violation of NEC as the ma... |
1206.2658 | Antonin Coutant | Antonin Coutant, Alessandro Fabbri, Renaud Parentani, Roberto Balbinot
and Paul Anderson | Hawking radiation of massive modes and undulations | 37 pages, 8 figures, published version | Phys. Rev. D 86, 064022 (2012) | 10.1103/PhysRevD.86.064022 | null | gr-qc cond-mat.quant-gas hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the analogue Hawking radiation for modes which posses a small wave
vector perpendicular to the horizon. For low frequencies, the resulting mass
term induces a total reflection. This generates an extra mode mixing that
occurs in the supersonic region, which cancels out the infrared divergence of
the near ho... | [
{
"created": "Tue, 12 Jun 2012 20:15:22 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Oct 2012 16:40:56 GMT",
"version": "v2"
}
] | 2012-10-05 | [
[
"Coutant",
"Antonin",
""
],
[
"Fabbri",
"Alessandro",
""
],
[
"Parentani",
"Renaud",
""
],
[
"Balbinot",
"Roberto",
""
],
[
"Anderson",
"Paul",
""
]
] | We compute the analogue Hawking radiation for modes which posses a small wave vector perpendicular to the horizon. For low frequencies, the resulting mass term induces a total reflection. This generates an extra mode mixing that occurs in the supersonic region, which cancels out the infrared divergence of the near hori... |
1406.2181 | Cosimo Bambi | Cosimo Bambi, Daniele Malafarina, Naoki Tsukamoto | Note on the effect of a massive accretion disk in the measurements of
black hole spins | 5 pages, 2 figures. v2: corrected a few typos | Phys. Rev. D 89, 127302 (2014) | 10.1103/PhysRevD.89.127302 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spin measurement of black holes has important implications in physics and
astrophysics. Regardless of the specific technique to estimate the black hole
spin, all the current approaches assume that the space-time geometry around the
compact object is exactly described by the Kerr solution. This is clearly an
appro... | [
{
"created": "Mon, 9 Jun 2014 13:46:17 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Jun 2014 21:20:57 GMT",
"version": "v2"
}
] | 2014-07-02 | [
[
"Bambi",
"Cosimo",
""
],
[
"Malafarina",
"Daniele",
""
],
[
"Tsukamoto",
"Naoki",
""
]
] | The spin measurement of black holes has important implications in physics and astrophysics. Regardless of the specific technique to estimate the black hole spin, all the current approaches assume that the space-time geometry around the compact object is exactly described by the Kerr solution. This is clearly an approxi... |
0806.3735 | Atsushi Higuchi | Mir Faizal and Atsushi Higuchi | On the FP-ghost propagators for Yang-Mills theories and perturbative
quantum gravity in the covariant gauge in de Sitter spacetime | 8 pages, to appear in Phys Rev D | Phys.Rev.D78:067502,2008 | 10.1103/PhysRevD.78.067502 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The propagators of the Faddeev-Popov (FP) ghosts for Yang-Mills theories and
perturbative quantum gravity in the covariant gauge are infrared (IR) divergent
in de Sitter spacetime. We point out, however, that the modes responsible for
these divergences will not contribute to loop diagrams in computations of
time-orde... | [
{
"created": "Mon, 23 Jun 2008 18:59:08 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Jul 2008 22:37:13 GMT",
"version": "v2"
},
{
"created": "Mon, 8 Sep 2008 21:03:36 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Faizal",
"Mir",
""
],
[
"Higuchi",
"Atsushi",
""
]
] | The propagators of the Faddeev-Popov (FP) ghosts for Yang-Mills theories and perturbative quantum gravity in the covariant gauge are infrared (IR) divergent in de Sitter spacetime. We point out, however, that the modes responsible for these divergences will not contribute to loop diagrams in computations of time-ordere... |
2406.09139 | Boris Daszuta | Boris Daszuta, William Cook, Peter Hammond, Jacob Fields, Eduardo M.
Guti\'errez, Sebastiano Bernuzzi, David Radice | Numerical relativity simulations of compact binaries: comparison of
cell- and vertex-centered adaptive meshes | null | null | null | null | gr-qc physics.comp-ph | http://creativecommons.org/licenses/by/4.0/ | Given the compact binary evolution problem of numerical relativity, in the
finite-difference, block-based, adaptive mesh refinement context, choices must
be made on how evolved fields are to be discretized. In GR-Athena++, the
space-time solver was previously fixed to be vertex-centered. Here, our recent
extensions t... | [
{
"created": "Thu, 13 Jun 2024 14:08:46 GMT",
"version": "v1"
}
] | 2024-06-14 | [
[
"Daszuta",
"Boris",
""
],
[
"Cook",
"William",
""
],
[
"Hammond",
"Peter",
""
],
[
"Fields",
"Jacob",
""
],
[
"Gutiérrez",
"Eduardo M.",
""
],
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Radice",
"David",
""
]
] | Given the compact binary evolution problem of numerical relativity, in the finite-difference, block-based, adaptive mesh refinement context, choices must be made on how evolved fields are to be discretized. In GR-Athena++, the space-time solver was previously fixed to be vertex-centered. Here, our recent extensions to ... |
gr-qc/0010051 | Alena Pravdova | V. Pravda, A. Pravdova | Co-accelerated particles in the C-metric | 10 pages, 12 EPS figures, changes mainly in abstract & introduction | Class.Quant.Grav.18:1205-1216,2001 | 10.1088/0264-9381/18/7/305 | null | gr-qc | null | With appropriately chosen parameters, the C-metric represents two uniformly
accelerated black holes moving in the opposite directions on the axis of the
axial symmetry (the z-axis). The acceleration is caused by nodal singularities
located on the z-axis.
In the~present paper, geodesics in the~C-metric are examined.... | [
{
"created": "Fri, 13 Oct 2000 12:11:30 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Oct 2000 15:09:52 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Pravda",
"V.",
""
],
[
"Pravdova",
"A.",
""
]
] | With appropriately chosen parameters, the C-metric represents two uniformly accelerated black holes moving in the opposite directions on the axis of the axial symmetry (the z-axis). The acceleration is caused by nodal singularities located on the z-axis. In the~present paper, geodesics in the~C-metric are examined. In ... |
gr-qc/9601001 | Masaru Siino | Masaru Siino | Quantum Stability of (2+1)-Spacetimes with Non-Trivial Topology | 17 pages, revtex, 3 uuencoded figures contained | Class.Quant.Grav. 14 (1997) 687-697 | 10.1088/0264-9381/14/3/012 | null | gr-qc | null | Quantum fields are investigated in the (2+1)-open-universes with non-trivial
topologies by the method of images. The universes are locally de Sitter
spacetime and anti-de Sitter spacetime. In the present article we study
spacetimes whose spatial topologies are a torus with a cusp and a sphere with
three cusps as a st... | [
{
"created": "Mon, 1 Jan 1996 13:31:15 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Siino",
"Masaru",
""
]
] | Quantum fields are investigated in the (2+1)-open-universes with non-trivial topologies by the method of images. The universes are locally de Sitter spacetime and anti-de Sitter spacetime. In the present article we study spacetimes whose spatial topologies are a torus with a cusp and a sphere with three cusps as a step... |
0707.2824 | Mikolaj Korzynski | Mikolaj Korzynski | Quasi--local angular momentum of non--symmetric isolated and dynamical
horizons from the conformal decomposition of the metric | Final version to appear in Classical and Quantum Gravity. One
reference added | Class.Quant.Grav.24:5935-5944,2007 | 10.1088/0264-9381/24/23/015 | null | gr-qc | null | A new definition of quasi--local angular momentum of non--axisymmetric
marginally outer trapped surfaces is proposed. It is based on conformal
decomposition of the two--dimensional metric and the action of the group of
conformal symmetries. The definition is completely general and agrees with the
standard one in axi-... | [
{
"created": "Thu, 19 Jul 2007 00:37:40 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jul 2007 22:55:15 GMT",
"version": "v2"
},
{
"created": "Mon, 1 Oct 2007 22:01:10 GMT",
"version": "v3"
},
{
"created": "Wed, 24 Oct 2007 10:20:20 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Korzynski",
"Mikolaj",
""
]
] | A new definition of quasi--local angular momentum of non--axisymmetric marginally outer trapped surfaces is proposed. It is based on conformal decomposition of the two--dimensional metric and the action of the group of conformal symmetries. The definition is completely general and agrees with the standard one in axi--s... |
gr-qc/9709010 | Herbert Liebl | M.O. Katanaev, W. Kummer, H. Liebl, D.V. Vassilevich | Generalized 2d-dilaton models, the true black hole and quantum
integrability | 26 pages, latex, no figures | null | null | TUW-97-10 | gr-qc | null | All 1+1 dimensional dipheomorphism-invariant models can be viewed in a
unified manner. This includes also general dilaton theories and especially
spherically symmetric gravity (SSG) and Witten's dilatonic black hole (DBH). A
common feature --- also in the presence of matter fields of any type --- is the
appearance of... | [
{
"created": "Thu, 4 Sep 1997 11:12:41 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Katanaev",
"M. O.",
""
],
[
"Kummer",
"W.",
""
],
[
"Liebl",
"H.",
""
],
[
"Vassilevich",
"D. V.",
""
]
] | All 1+1 dimensional dipheomorphism-invariant models can be viewed in a unified manner. This includes also general dilaton theories and especially spherically symmetric gravity (SSG) and Witten's dilatonic black hole (DBH). A common feature --- also in the presence of matter fields of any type --- is the appearance of a... |
1104.4414 | Mark Durkee | Mark Durkee | New approaches to higher-dimensional general relativity | PhD thesis (University of Cambridge, submitted Jan 2011), 226 pages,
7 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This PhD thesis contains a collection of work related to the algebraic
classification of spacetimes in higher dimensions, including an up-to-date
review of various aspects of the field. The work discussed includes the
higher-dimensional Geroch-Held-Penrose formalism, a partial generalization of
the Goldberg-Sachs the... | [
{
"created": "Fri, 22 Apr 2011 09:09:16 GMT",
"version": "v1"
}
] | 2015-03-19 | [
[
"Durkee",
"Mark",
""
]
] | This PhD thesis contains a collection of work related to the algebraic classification of spacetimes in higher dimensions, including an up-to-date review of various aspects of the field. The work discussed includes the higher-dimensional Geroch-Held-Penrose formalism, a partial generalization of the Goldberg-Sachs theor... |
1508.01114 | Kirill Bronnikov | K.A. Bronnikov, A.M. Galiakhmetov | Wormholes without exotic matter in Einstein-Cartan theory | 7 pages, 3 figures | Grav. Cosmol, 21 (4) 283-288 (2015) | 10.1134/S0202289315040027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the possible existence of static traversable wormholes without
invoking exotic matter in the framework of the Einstein--Cartan theory. A
family of exact static, spherically symmetric wormhole solutions with an
arbitrary throat radius, with flat or AdS asymptotic behavior, has been
obtained with sources in th... | [
{
"created": "Wed, 5 Aug 2015 16:05:08 GMT",
"version": "v1"
}
] | 2016-03-30 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Galiakhmetov",
"A. M.",
""
]
] | We study the possible existence of static traversable wormholes without invoking exotic matter in the framework of the Einstein--Cartan theory. A family of exact static, spherically symmetric wormhole solutions with an arbitrary throat radius, with flat or AdS asymptotic behavior, has been obtained with sources in the ... |
1410.7527 | Seyed Hossein Hendi Dr. | S. H. Hendi | (2+1)-dimensional solutions in $F(R)$ gravity | 10 pages, no figure, accepted in IJTP | Int. J. Theor. Phys. 53 (2014) 4170-4181 | 10.1007/s10773-014-2168-8 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the well-known charged BTZ black holes, we look for
$(2+1)$-dimensional solutions of $F(R)$ gravity. At first we investigate some
near horizon solutions and after that we obtain asymptotically Lifshitz black
hole solutions. Finally, we discuss about rotating black holes with exponential
form of $F(R)$ th... | [
{
"created": "Tue, 28 Oct 2014 06:06:34 GMT",
"version": "v1"
}
] | 2015-07-13 | [
[
"Hendi",
"S. H.",
""
]
] | Motivated by the well-known charged BTZ black holes, we look for $(2+1)$-dimensional solutions of $F(R)$ gravity. At first we investigate some near horizon solutions and after that we obtain asymptotically Lifshitz black hole solutions. Finally, we discuss about rotating black holes with exponential form of $F(R)$ theo... |
1808.09244 | Ulf Leonhardt | Jonathan Drori, Yuval Rosenberg, David Bermudez, Yaron Silberberg, Ulf
Leonhardt | Observation of Stimulated Hawking Radiation in Optics | null | Phys. Rev. Lett. 122, 010404 (2019) | 10.1103/PhysRevLett.122.010404 | null | gr-qc physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The theory of Hawking radiation can be tested in laboratory analogues of
black holes. We use light pulses in nonlinear fiber optics to establish
artificial event horizons. Each pulse generates a moving perturbation of the
refractive index via the Kerr effect. Probe light perceives this as an event
horizon when its gr... | [
{
"created": "Tue, 28 Aug 2018 12:06:36 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Sep 2018 05:45:38 GMT",
"version": "v2"
},
{
"created": "Mon, 12 Nov 2018 12:13:22 GMT",
"version": "v3"
},
{
"created": "Sun, 13 Jan 2019 11:11:05 GMT",
"version": "v4"
}
] | 2019-01-16 | [
[
"Drori",
"Jonathan",
""
],
[
"Rosenberg",
"Yuval",
""
],
[
"Bermudez",
"David",
""
],
[
"Silberberg",
"Yaron",
""
],
[
"Leonhardt",
"Ulf",
""
]
] | The theory of Hawking radiation can be tested in laboratory analogues of black holes. We use light pulses in nonlinear fiber optics to establish artificial event horizons. Each pulse generates a moving perturbation of the refractive index via the Kerr effect. Probe light perceives this as an event horizon when its grou... |
2204.01748 | Shahar Hod | Shahar Hod | Non-equatorial scalar rings supported by magnetized Schwarzschild-Melvin
black holes | 7 pages | Physical Review D 105, 084056 (2022) | 10.1103/PhysRevD.105.084056 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | It has recently been demonstrated that magnetized black holes in composed
Einstein-Maxwell-scalar-Gauss-Bonnet field theories with a non-minimal negative
coupling of the scalar field to the Gauss-Bonnet curvature invariant may
support spatially regular scalar hairy configurations. In particular, it has
been revealed ... | [
{
"created": "Mon, 4 Apr 2022 18:00:01 GMT",
"version": "v1"
}
] | 2022-05-11 | [
[
"Hod",
"Shahar",
""
]
] | It has recently been demonstrated that magnetized black holes in composed Einstein-Maxwell-scalar-Gauss-Bonnet field theories with a non-minimal negative coupling of the scalar field to the Gauss-Bonnet curvature invariant may support spatially regular scalar hairy configurations. In particular, it has been revealed th... |
gr-qc/0411081 | Sergio Dain | Sergio Dain | Elliptic systems | 23 pages, latex, uses svmult.cls style file (included). To appear in
the Proceeding of the March-2004 Heraeus Seminar in Bad Honnef | Lect.Notes Phys. 692 (2006) 117-139 | 10.1007/11550259_6 | null | gr-qc | null | In this article I will review some basic results on elliptic boundary value
problems with applications to General Relativity.
| [
{
"created": "Tue, 16 Nov 2004 13:51:43 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Dain",
"Sergio",
""
]
] | In this article I will review some basic results on elliptic boundary value problems with applications to General Relativity. |
1107.5036 | Dan Solomon | Dan Solomon | Comparing two methods of regularization of the kinetic energy density | Added an extra section. 15 pages | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we will compare two different methods of regularizing the
kinetic energy density for a massless scalar field in the presence of a static
scalar potential. One method of regularization is to subtract the cosmological
constant from the "naive" expression for the kinetic energy density. The other
method is... | [
{
"created": "Sun, 24 Jul 2011 12:58:41 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Aug 2011 00:52:02 GMT",
"version": "v2"
}
] | 2011-08-11 | [
[
"Solomon",
"Dan",
""
]
] | In this paper we will compare two different methods of regularizing the kinetic energy density for a massless scalar field in the presence of a static scalar potential. One method of regularization is to subtract the cosmological constant from the "naive" expression for the kinetic energy density. The other method is t... |
1901.08988 | Adria Delhom | Jose Beltr\'an Jim\'enez and Adria Delhom | Ghosts in metric-affine higher order curvature gravity | 7 pages | Eur.Phys.J. C79 (2019) no.8, 656 | 10.1140/epjc/s10052-019-7149-x | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We disprove the widespread belief that higher order curvature theories of
gravity in the metric-affine formalism are generally ghost-free. This is
clarified by considering a sub-class of theories constructed only with the
Ricci tensor and showing that the non-projectively invariant sector propagates
ghost-like degree... | [
{
"created": "Fri, 25 Jan 2019 17:06:11 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Aug 2019 12:46:46 GMT",
"version": "v2"
}
] | 2019-08-21 | [
[
"Jiménez",
"Jose Beltrán",
""
],
[
"Delhom",
"Adria",
""
]
] | We disprove the widespread belief that higher order curvature theories of gravity in the metric-affine formalism are generally ghost-free. This is clarified by considering a sub-class of theories constructed only with the Ricci tensor and showing that the non-projectively invariant sector propagates ghost-like degrees ... |
2311.07456 | Adrian Abac | Adrian Abac, Tim Dietrich, Alessandra Buonanno, Jan Steinhoff and
Maximiliano Ujevic | New and Robust Gravitational-Waveform Model for High-Mass-Ratio Binary
Neutron Star Systems with Dynamical Tidal Effects | null | Phys. Rev. D 109, 024062 (2024) | 10.1103/PhysRevD.109.024062 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | For the analysis of gravitational-wave signals, fast and accurate
gravitational-waveform models are required. These enable us to obtain
information on the system properties from compact binary mergers. In this
article, we introduce the NRTidalv3 model, which contains a closed-form
expression that describes tidal effe... | [
{
"created": "Mon, 13 Nov 2023 16:41:19 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jul 2024 08:23:55 GMT",
"version": "v2"
}
] | 2024-07-17 | [
[
"Abac",
"Adrian",
""
],
[
"Dietrich",
"Tim",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Steinhoff",
"Jan",
""
],
[
"Ujevic",
"Maximiliano",
""
]
] | For the analysis of gravitational-wave signals, fast and accurate gravitational-waveform models are required. These enable us to obtain information on the system properties from compact binary mergers. In this article, we introduce the NRTidalv3 model, which contains a closed-form expression that describes tidal effect... |
2206.14714 | Alexander Zhidenko | R. A. Konoplya, A. F. Zinhailo, J. Kunz, Z. Stuchlik, A. Zhidenko | Quasinormal ringing of regular black holes in asymptotically safe
gravity: the importance of overtones | 20 pages, 7 figures | JCAP 10 (2022) 091 | 10.1088/1475-7516/2022/10/091 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Asymptotically safe gravity is based on the idea that the main contribution
to the Schwarzschild-like black hole spacetime is due to the value of the
gravitational coupling which depends on the distance from the origin and
approaches its classical value in the far zone. However, at some stage this
approach has an arb... | [
{
"created": "Wed, 29 Jun 2022 15:22:05 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Oct 2022 02:35:34 GMT",
"version": "v2"
}
] | 2022-11-01 | [
[
"Konoplya",
"R. A.",
""
],
[
"Zinhailo",
"A. F.",
""
],
[
"Kunz",
"J.",
""
],
[
"Stuchlik",
"Z.",
""
],
[
"Zhidenko",
"A.",
""
]
] | Asymptotically safe gravity is based on the idea that the main contribution to the Schwarzschild-like black hole spacetime is due to the value of the gravitational coupling which depends on the distance from the origin and approaches its classical value in the far zone. However, at some stage this approach has an arbit... |
1102.2090 | Yuta Yamada | Yuta Yamada, Hisa-aki Shinkai | Formation of naked singularities in five-dimensional space-time | 5 pages, 5 figures, To be published in Phys. Rev. D | Phys.Rev.D83:064006,2011 | 10.1103/PhysRevD.83.064006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We numerically investigate the gravitational collapse of collisionless
particles in spheroidal configurations both in four and five-dimensional (5D)
space-time. We repeat the simulation performed by Shapiro and Teukolsky (1991)
that announced an appearance of a naked singularity, and also find that the
similar result... | [
{
"created": "Thu, 10 Feb 2011 12:02:19 GMT",
"version": "v1"
}
] | 2011-03-21 | [
[
"Yamada",
"Yuta",
""
],
[
"Shinkai",
"Hisa-aki",
""
]
] | We numerically investigate the gravitational collapse of collisionless particles in spheroidal configurations both in four and five-dimensional (5D) space-time. We repeat the simulation performed by Shapiro and Teukolsky (1991) that announced an appearance of a naked singularity, and also find that the similar results ... |
1007.2780 | Lorenzo Iorio | Lorenzo Iorio | Classical and relativistic long-term time variations of some observables
for transiting exoplanets | LaTex2e, 19 pages, 5 figures, 2 tables. Some references updated. To
appear in Monthly Notices of the Royal Astronomical Society (MNRAS) | Mon.Not.Roy.Astron.Soc.411:167-183,2011 | 10.1111/j.1365-2966.2010.17669.x | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically work out the long-term, i.e. averaged over one orbital
revolution, time variations of some direct observable quantities Y induced by
classical and general relativistic dynamical perturbations of the two-body
pointlike Newtonian acceleration in the case of transiting exoplanets moving
along elliptic or... | [
{
"created": "Fri, 16 Jul 2010 14:23:41 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Jul 2010 14:08:27 GMT",
"version": "v2"
},
{
"created": "Wed, 8 Sep 2010 15:58:32 GMT",
"version": "v3"
},
{
"created": "Thu, 7 Oct 2010 18:07:59 GMT",
"version": "v4"
}
] | 2011-01-24 | [
[
"Iorio",
"Lorenzo",
""
]
] | We analytically work out the long-term, i.e. averaged over one orbital revolution, time variations of some direct observable quantities Y induced by classical and general relativistic dynamical perturbations of the two-body pointlike Newtonian acceleration in the case of transiting exoplanets moving along elliptic orbi... |
0904.0110 | Ali Reza Amani | J. Sadeghi, F. Milani and A. R. Amani | Bouncing universe with the non-minimally coupled scaler field and its
reconstructing | 16 pages, 9 figures. Accepted in MPLA | Mod.Phys.Lett.A24:2363-2376,2009 | 10.1142/S0217732309030783 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider a non-minimally coupled scaler field, and show its
equation of state parameter can crossing over -1, $\omega\to -1$, and bouncing
condition. Also we obtain the stability conditions and consider reconstructing
for our model.
| [
{
"created": "Wed, 1 Apr 2009 09:29:53 GMT",
"version": "v1"
}
] | 2010-04-30 | [
[
"Sadeghi",
"J.",
""
],
[
"Milani",
"F.",
""
],
[
"Amani",
"A. R.",
""
]
] | In this paper we consider a non-minimally coupled scaler field, and show its equation of state parameter can crossing over -1, $\omega\to -1$, and bouncing condition. Also we obtain the stability conditions and consider reconstructing for our model. |
gr-qc/9809090 | Herbert Hamber | H.W. Hamber | AENEAS - A Custom-built Parallel Supercomputer for Quantum Gravity | LaTeX, 11 pages, 3 figures | null | null | UCI-98-13 | gr-qc hep-lat hep-th | null | Accurate Quantum Gravity calculations, based on the simplicial lattice
formulation, are computationally very demanding and require vast amounts of
computer resources. A custom-made 64-node parallel supercomputer capable of
performing up to $2 \times 10^{10}$ floating point operations per second has
been assembled ent... | [
{
"created": "Wed, 30 Sep 1998 22:45:46 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hamber",
"H. W.",
""
]
] | Accurate Quantum Gravity calculations, based on the simplicial lattice formulation, are computationally very demanding and require vast amounts of computer resources. A custom-made 64-node parallel supercomputer capable of performing up to $2 \times 10^{10}$ floating point operations per second has been assembled entir... |
2303.13105 | Xiangdong Zhang | Yongbin Du and Xiangdong Zhang | Topological classes of black holes in de-Sitter spacetime | 18 pages, 14 figures | Eur. Phys. J. C 83, 927 (2023) | 10.1140/epjc/s10052-023-12114-5 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we investigate the topological number of de-Sitter black hole
solutions with different charges $(q)$ and rotational $(a)$ parameters. By
using generalized free energy and Duan's $\phi$-mapping topological current
theory, we find that the topological numbers of black holes can still be
classified as thr... | [
{
"created": "Thu, 23 Mar 2023 08:44:19 GMT",
"version": "v1"
}
] | 2023-10-17 | [
[
"Du",
"Yongbin",
""
],
[
"Zhang",
"Xiangdong",
""
]
] | In this paper, we investigate the topological number of de-Sitter black hole solutions with different charges $(q)$ and rotational $(a)$ parameters. By using generalized free energy and Duan's $\phi$-mapping topological current theory, we find that the topological numbers of black holes can still be classified as three... |
0903.5420 | Chen Songbai | Songbai Chen, Xiangyun Fu, Jiliang Jing | Density pertubation of unparticle dark matter in the flat Universe | 6pages, 4 figures, accepted for publication in Eur. Phys. J. C | Eur.Phys.J.C64:107-112,2009 | 10.1140/epjc/s10052-009-1141-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The unparticle has been suggested as a candidate of dark matter. We
investigated the growth rate of the density perturbation for the unparticle
dark matter in the flat Universe. First, we consider the model in which
unparticle is the sole dark matter and find that the growth factor can be
approximated well by $f=(1+3... | [
{
"created": "Tue, 31 Mar 2009 09:44:33 GMT",
"version": "v1"
},
{
"created": "Sun, 30 Aug 2009 07:12:42 GMT",
"version": "v2"
},
{
"created": "Mon, 26 Oct 2009 07:52:55 GMT",
"version": "v3"
}
] | 2009-11-05 | [
[
"Chen",
"Songbai",
""
],
[
"Fu",
"Xiangyun",
""
],
[
"Jing",
"Jiliang",
""
]
] | The unparticle has been suggested as a candidate of dark matter. We investigated the growth rate of the density perturbation for the unparticle dark matter in the flat Universe. First, we consider the model in which unparticle is the sole dark matter and find that the growth factor can be approximated well by $f=(1+3\o... |
gr-qc/0604081 | Giovanni Venturi | F. Finelli, G. Marozzi, G.P. Vacca, G. Venturi | Second Order Gauge-Invariant Perturbations during Inflation | 17 pages, 6 figures. Final version to appear in Phys. Rev. D | Phys.Rev.D74:083522,2006 | 10.1103/PhysRevD.74.083522 | null | gr-qc astro-ph hep-th | null | The evolution of gauge invariant second-order scalar perturbations in a
general single field inflationary scenario are presented. Different second
order gauge invariant expressions for the curvature are considered. We evaluate
perturbatively one of these second order curvature fluctuations and a second
order gauge in... | [
{
"created": "Wed, 19 Apr 2006 15:36:37 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Jul 2006 15:54:56 GMT",
"version": "v2"
},
{
"created": "Tue, 31 Oct 2006 15:46:18 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Finelli",
"F.",
""
],
[
"Marozzi",
"G.",
""
],
[
"Vacca",
"G. P.",
""
],
[
"Venturi",
"G.",
""
]
] | The evolution of gauge invariant second-order scalar perturbations in a general single field inflationary scenario are presented. Different second order gauge invariant expressions for the curvature are considered. We evaluate perturbatively one of these second order curvature fluctuations and a second order gauge inva... |
0910.1634 | Cosimo Bambi | Cosimo Bambi, Katherine Freese, Tomohiro Harada, Rohta Takahashi,
Naoki Yoshida | Accretion process onto super-spinning objects | 11 pages, 5 figures. v2: with explanation of the origin of the
critical value |a|/M = 1.4 | Phys.Rev.D80:104023,2009 | 10.1103/PhysRevD.80.104023 | IPMU09-0113 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The accretion process onto spinning objects in Kerr spacetimes is studied
with numerical simulations. Our results show that accretion onto compact
objects with Kerr parameter (characterizing the spin) $|a| < M$ and $|a| > M$
is very different. In the super-spinning case, for $|a|$ moderately larger than
$M$, the accr... | [
{
"created": "Thu, 8 Oct 2009 23:58:48 GMT",
"version": "v1"
},
{
"created": "Sat, 17 Oct 2009 01:37:22 GMT",
"version": "v2"
}
] | 2009-11-18 | [
[
"Bambi",
"Cosimo",
""
],
[
"Freese",
"Katherine",
""
],
[
"Harada",
"Tomohiro",
""
],
[
"Takahashi",
"Rohta",
""
],
[
"Yoshida",
"Naoki",
""
]
] | The accretion process onto spinning objects in Kerr spacetimes is studied with numerical simulations. Our results show that accretion onto compact objects with Kerr parameter (characterizing the spin) $|a| < M$ and $|a| > M$ is very different. In the super-spinning case, for $|a|$ moderately larger than $M$, the accret... |
1502.00204 | Peng Wang | Peng Wang, Haitang Yang, Shuxuan Ying | Minimal Length Effects on Entanglement Entropy of Spherically Symmetric
Black Holes in Brick Wall Model | 15 pages. arXiv admin note: substantial text overlap with
arXiv:1501.06025 | null | 10.1088/0264-9381/33/2/025007 | CTP-SCU/2015004 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the black hole horizon entanglement entropy for a massless scalar
field in the brick wall model by incorporating the minimal length. Taking the
minimal length effects on the occupation number $n(\omega,l)$ and the Hawking
temperature into consideration, we obtain the leading UV divergent term and the
suble... | [
{
"created": "Sun, 1 Feb 2015 06:24:04 GMT",
"version": "v1"
}
] | 2016-01-13 | [
[
"Wang",
"Peng",
""
],
[
"Yang",
"Haitang",
""
],
[
"Ying",
"Shuxuan",
""
]
] | We compute the black hole horizon entanglement entropy for a massless scalar field in the brick wall model by incorporating the minimal length. Taking the minimal length effects on the occupation number $n(\omega,l)$ and the Hawking temperature into consideration, we obtain the leading UV divergent term and the sublead... |
2104.12610 | Victor Shchigolev Konstantinovich | V. K. Shchigolev | Fractional-order derivatives in cosmological models of accelerated
expansion | 20 pages, no figures | Modern Physics Letters A , Vol. 36, No. 14 (2021) 2130014 (21
pages) | 10.1142/S0217732321300147 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this brief review, we present the results of the fractional differential
approach in cosmology in the context of the exact models of cosmological
accelerated expansion obtained by several authors to date. Most of these
studies are devoted to the problem of introducing fractional derivatives or
fractional integrals... | [
{
"created": "Mon, 26 Apr 2021 14:23:25 GMT",
"version": "v1"
}
] | 2021-05-18 | [
[
"Shchigolev",
"V. K.",
""
]
] | In this brief review, we present the results of the fractional differential approach in cosmology in the context of the exact models of cosmological accelerated expansion obtained by several authors to date. Most of these studies are devoted to the problem of introducing fractional derivatives or fractional integrals i... |
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