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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2406.03929 | Yu-Xiao Liu | Hai-Long Jia, Wen-Di Guo, Qin Tan, and Yu-Xiao Liu | Ringing Thick Braneworld with Finite Extra Dimension | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we investigate the quasinormal modes of the Poincar\'e thick
brane with a finite extra dimension. Unlike the case with an infinite extra
dimension, the gravitational effective potential exhibits three distinct shapes
within different ranges of the parameter $n$ in the warp factor: harmonic
oscillator po... | [
{
"created": "Thu, 6 Jun 2024 10:12:02 GMT",
"version": "v1"
}
] | 2024-06-07 | [
[
"Jia",
"Hai-Long",
""
],
[
"Guo",
"Wen-Di",
""
],
[
"Tan",
"Qin",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | In this work, we investigate the quasinormal modes of the Poincar\'e thick brane with a finite extra dimension. Unlike the case with an infinite extra dimension, the gravitational effective potential exhibits three distinct shapes within different ranges of the parameter $n$ in the warp factor: harmonic oscillator pote... |
gr-qc/0409074 | Sushil Srivastava | S.K.Srivastava | Tachyon as a Dark Energy Source | 16 pages | null | null | null | gr-qc astro-ph hep-th | null | It is demonstrated that dark energy, driven by tachyons having non-minimal
coupling with curvature and self-interacting inverse cubic potential, decays to
cold dark matter in the late universe. It is found that this penomenon yields a
solution to `` cosmic coincidence problem''.
| [
{
"created": "Mon, 20 Sep 2004 08:20:43 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Oct 2004 13:06:36 GMT",
"version": "v2"
},
{
"created": "Tue, 25 Jan 2005 10:38:12 GMT",
"version": "v3"
},
{
"created": "Thu, 10 Mar 2005 09:51:03 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Srivastava",
"S. K.",
""
]
] | It is demonstrated that dark energy, driven by tachyons having non-minimal coupling with curvature and self-interacting inverse cubic potential, decays to cold dark matter in the late universe. It is found that this penomenon yields a solution to `` cosmic coincidence problem''. |
1608.05947 | Mercedes Martin-Benito | B. Elizaga Navascu\'es, M. Mart\'in-Benito and G.A. Mena Marug\'an | Hybrid Models in Loop Quantum Cosmology | Invited review article for the special issue of the International
Journal of Modern Physics D on Loop Quantum Cosmology | Int. J. Mod. Phys. D 25, 1642007 (2016) | 10.1142/S0218271816420074 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the framework of Loop Quantum Cosmology, inhomogeneous models are usually
quantized by means of a hybrid approach that combines loop quantization
techniques with standard quantum field theory methods. This approach is based
on a splitting of the phase space in a homogeneous sector, formed by global,
zero-modes, an... | [
{
"created": "Sun, 21 Aug 2016 14:35:48 GMT",
"version": "v1"
}
] | 2016-08-23 | [
[
"Navascués",
"B. Elizaga",
""
],
[
"Martín-Benito",
"M.",
""
],
[
"Marugán",
"G. A. Mena",
""
]
] | In the framework of Loop Quantum Cosmology, inhomogeneous models are usually quantized by means of a hybrid approach that combines loop quantization techniques with standard quantum field theory methods. This approach is based on a splitting of the phase space in a homogeneous sector, formed by global, zero-modes, and ... |
1908.08472 | Luciano Gabbanelli | Dom\`enec Espriu, Luciano Gabbanelli, Marc Rodoreda | Measuring $H_0$ with pulsar timing arrays | 25 pages, 11 figures, 2 tables | Class. Quant. Grav. 37: 085013 (2020) | 10.1088/1361-6382/ab7ac6 | ICCUB-19-014 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Pulsar Timing Arrays have yet to convincingly observe gravitational waves.
Some time ago it was pointed out by one of the authors that a dramatic
enhancement of the signal would take place for particular values of the angle
subtended by the source and the observed pulsar. This enhancement is due to the
fact that wave... | [
{
"created": "Thu, 22 Aug 2019 16:09:19 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Apr 2020 14:39:51 GMT",
"version": "v2"
}
] | 2020-04-16 | [
[
"Espriu",
"Domènec",
""
],
[
"Gabbanelli",
"Luciano",
""
],
[
"Rodoreda",
"Marc",
""
]
] | Pulsar Timing Arrays have yet to convincingly observe gravitational waves. Some time ago it was pointed out by one of the authors that a dramatic enhancement of the signal would take place for particular values of the angle subtended by the source and the observed pulsar. This enhancement is due to the fact that waves ... |
gr-qc/0212125 | Sergio M. C. V. Goncalves | Sergio M. C. V. Goncalves | Unpolarized radiative cylindrical spacetimes: Trapped surfaces and
quasilocal energy | 15 pages, LaTeX, uses IOP package; published in Class. Quantum Grav | Class.Quant.Grav.20:37-49,2003 | 10.1088/0264-9381/20/1/303 | null | gr-qc | null | We consider the most general vacuum cylindrical spacetimes, which are defined
by two global, spacelike, commuting, non-hypersurface-orthogonal Killing vector
fields. The cylindrical waves in such spacetimes contain both + and $\times$
polarizations, and are thus said to be unpolarized. We show that there are no
trapp... | [
{
"created": "Mon, 30 Dec 2002 18:02:02 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Goncalves",
"Sergio M. C. V.",
""
]
] | We consider the most general vacuum cylindrical spacetimes, which are defined by two global, spacelike, commuting, non-hypersurface-orthogonal Killing vector fields. The cylindrical waves in such spacetimes contain both + and $\times$ polarizations, and are thus said to be unpolarized. We show that there are no trapped... |
gr-qc/0503056 | Gioel Calabrese | Gioel Calabrese, Ian Hinder, Sascha Husa | Numerical stability for finite difference approximations of Einstein's
equations | 18 pages, 9 figures | J.Comput.Phys. 218 (2006) 607-634 | 10.1016/j.jcp.2006.02.027 | null | gr-qc | null | We extend the notion of numerical stability of finite difference
approximations to include hyperbolic systems that are first order in time and
second order in space, such as those that appear in Numerical Relativity. By
analyzing the symbol of the second order system, we obtain necessary and
sufficient conditions for... | [
{
"created": "Sun, 13 Mar 2005 19:28:52 GMT",
"version": "v1"
},
{
"created": "Fri, 31 Mar 2006 09:39:29 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Calabrese",
"Gioel",
""
],
[
"Hinder",
"Ian",
""
],
[
"Husa",
"Sascha",
""
]
] | We extend the notion of numerical stability of finite difference approximations to include hyperbolic systems that are first order in time and second order in space, such as those that appear in Numerical Relativity. By analyzing the symbol of the second order system, we obtain necessary and sufficient conditions for s... |
2112.03992 | Thomas Thiemann | Thomas Thiemann and Madhavan Varadarajan | On propagation in Loop Quantum Gravity | 33p, 2 figures | null | null | null | gr-qc hep-lat hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A rigorous implementation of the Wheeler-Dewitt equations was derived in the
context of Loop Quantum Gravity (LQG) and was coined Quantum Spin Dynamics
(QSD). The Hamiltonian constraint of QSD was criticised as being too local and
to prevent "propagation" in canonical LQG. That criticism was based on an
algorithm dev... | [
{
"created": "Tue, 7 Dec 2021 21:15:23 GMT",
"version": "v1"
}
] | 2021-12-09 | [
[
"Thiemann",
"Thomas",
""
],
[
"Varadarajan",
"Madhavan",
""
]
] | A rigorous implementation of the Wheeler-Dewitt equations was derived in the context of Loop Quantum Gravity (LQG) and was coined Quantum Spin Dynamics (QSD). The Hamiltonian constraint of QSD was criticised as being too local and to prevent "propagation" in canonical LQG. That criticism was based on an algorithm devel... |
gr-qc/0405096 | Alessandro Fabbri | Roberto Balbinot, Serena Fagnocchi, Alessandro Fabbri, Giovanni P.
Procopio | Backreaction in Acoustic Black Holes | 4 pages, revtex, 1 figure. revised version, published in prl | Phys.Rev.Lett. 94 (2005) 161302 | 10.1103/PhysRevLett.94.161302 | null | gr-qc cond-mat.other hep-th | null | The backreaction equations for the linearized quantum fluctuations in an
acoustic black hole are given. The solution near the horizon, obtained within a
dimensional reduction, indicates that acoustic black holes, unlike
Schwarzschild ones, get cooler as they radiate phonons. They show remarkable
analogies with near-e... | [
{
"created": "Tue, 18 May 2004 14:35:45 GMT",
"version": "v1"
},
{
"created": "Tue, 31 May 2005 10:44:17 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Balbinot",
"Roberto",
""
],
[
"Fagnocchi",
"Serena",
""
],
[
"Fabbri",
"Alessandro",
""
],
[
"Procopio",
"Giovanni P.",
""
]
] | The backreaction equations for the linearized quantum fluctuations in an acoustic black hole are given. The solution near the horizon, obtained within a dimensional reduction, indicates that acoustic black holes, unlike Schwarzschild ones, get cooler as they radiate phonons. They show remarkable analogies with near-ext... |
1512.05696 | Erik Jonathan Lindgren | E. J. Lindgren | Black hole formation from point-like particles in three-dimensional
anti-de Sitter space | 42 pages, 9 figures; v2: fixed some typos | Class.Quant.Grav. 33 (2016) no.14, 145009 | 10.1088/0264-9381/33/14/145009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study collisions of many point-like particles in three-dimensional anti-de
Sitter space, generalizing the known result with two particles. We show how to
construct exact solutions corresponding to the formation of either a black hole
or a conical singularity from the collision of an arbitrary number of massless
pa... | [
{
"created": "Thu, 17 Dec 2015 17:52:48 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Aug 2016 08:40:10 GMT",
"version": "v2"
}
] | 2016-11-24 | [
[
"Lindgren",
"E. J.",
""
]
] | We study collisions of many point-like particles in three-dimensional anti-de Sitter space, generalizing the known result with two particles. We show how to construct exact solutions corresponding to the formation of either a black hole or a conical singularity from the collision of an arbitrary number of massless part... |
2402.18368 | Alfredo D. Miravet | Antonio L. Maroto, Alfredo D. Miravet | TDiff invariant gauge fields in cosmology | 22 pages. Final version published in PRD with a corrected typo in Eq.
(110) | Phys. Rev. D 109, 103504 (2024) | 10.1103/PhysRevD.109.103504 | IPARCOS-UCM-24-014 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the dynamics of Abelian gauge fields invariant under transverse
diffeomorphisms (TDiff) in cosmological contexts. We show that in the geometric
optics approximation, very much as for Diff invariant theories, the
corresponding massless gauge bosons propagate along null geodesics and particle
number is conserv... | [
{
"created": "Wed, 28 Feb 2024 14:42:29 GMT",
"version": "v1"
},
{
"created": "Wed, 15 May 2024 15:25:52 GMT",
"version": "v2"
}
] | 2024-05-16 | [
[
"Maroto",
"Antonio L.",
""
],
[
"Miravet",
"Alfredo D.",
""
]
] | We study the dynamics of Abelian gauge fields invariant under transverse diffeomorphisms (TDiff) in cosmological contexts. We show that in the geometric optics approximation, very much as for Diff invariant theories, the corresponding massless gauge bosons propagate along null geodesics and particle number is conserved... |
1501.02752 | Joshua S. Schiffrin | Joshua S. Schiffrin and Robert M. Wald | Reflection Symmetry in Higher Dimensional Black Hole Spacetimes | 31 pages. v2: minor corrections; remark added to section VI; section
VII (generalizations) rewritten. v3: minor corrections | Class. Quantum Grav. 32 (2015) 105005 | 10.1088/0264-9381/32/10/105005 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In 4 spacetime dimensions there is a well known proof that for any
asymptotically flat, stationary, and axisymmetric vacuum solution of Einstein's
equation there exists a "$t$-$\phi$" reflection isometry that reverses the
direction of the timelike Killing vector field and the direction of the axial
Killing vector fie... | [
{
"created": "Mon, 12 Jan 2015 19:00:18 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Feb 2015 21:58:59 GMT",
"version": "v2"
},
{
"created": "Wed, 15 Apr 2015 21:11:41 GMT",
"version": "v3"
}
] | 2015-04-27 | [
[
"Schiffrin",
"Joshua S.",
""
],
[
"Wald",
"Robert M.",
""
]
] | In 4 spacetime dimensions there is a well known proof that for any asymptotically flat, stationary, and axisymmetric vacuum solution of Einstein's equation there exists a "$t$-$\phi$" reflection isometry that reverses the direction of the timelike Killing vector field and the direction of the axial Killing vector field... |
1703.02029 | S. I. Kruglov | S. I. Kruglov | Black hole as a magnetic monopole within exponential nonlinear
electrodynamics | 19 pages, 4 figures | Ann. Phys., Vol. 378, 59 (2017) | 10.1016/j.aop.2016.12.036 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform the gauge covariant quantization of the exponential model of
nonlinear electrodynamics. Magnetically charged black holes, in the framework
of our model are considered, and the regular black hole solution is obtained in
general relativity. The asymptotic black hole solution at $r\rightarrow \infty$
is found... | [
{
"created": "Sat, 4 Mar 2017 00:06:50 GMT",
"version": "v1"
}
] | 2017-03-14 | [
[
"Kruglov",
"S. I.",
""
]
] | We perform the gauge covariant quantization of the exponential model of nonlinear electrodynamics. Magnetically charged black holes, in the framework of our model are considered, and the regular black hole solution is obtained in general relativity. The asymptotic black hole solution at $r\rightarrow \infty$ is found. ... |
1907.06726 | Gauranga Samanta | Nisha Godani and Gauranga C. Samanta | Non violation of energy conditions in wormholes modelling | 24 pages, 32 figures, to be appear in Modern Physics Letters A | null | 10.1142/S0217732319502262 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Morris \& Thorne \cite{morris1} proposed geometrical objects called
traversable wormholes that act as bridges in connecting two spacetimes or two
different points of the same spacetime. The geometrical properties of these
wormholes depend upon the choice of the shape function. In literature, these
are studied in modi... | [
{
"created": "Fri, 12 Jul 2019 05:17:31 GMT",
"version": "v1"
}
] | 2019-07-17 | [
[
"Godani",
"Nisha",
""
],
[
"Samanta",
"Gauranga C.",
""
]
] | Morris \& Thorne \cite{morris1} proposed geometrical objects called traversable wormholes that act as bridges in connecting two spacetimes or two different points of the same spacetime. The geometrical properties of these wormholes depend upon the choice of the shape function. In literature, these are studied in modifi... |
gr-qc/0603073 | Joao Magueijo | Joao Magueijo | Could quantum gravity be tested with high intensity Lasers? | null | Phys.Rev. D73 (2006) 124020 | 10.1103/PhysRevD.73.124020 | null | gr-qc cond-mat.other physics.optics | null | In quantum gravity theories Planckian behavior is triggered by the energy of
{\it elementary} particles approaching the Planck energy, $E_P$, but it's also
possible that anomalous behavior strikes systems of particles with total energy
near $E_P$. This is usually perceived to be pathological and has been labelled
``t... | [
{
"created": "Mon, 20 Mar 2006 20:57:20 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Apr 2006 20:26:54 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Magueijo",
"Joao",
""
]
] | In quantum gravity theories Planckian behavior is triggered by the energy of {\it elementary} particles approaching the Planck energy, $E_P$, but it's also possible that anomalous behavior strikes systems of particles with total energy near $E_P$. This is usually perceived to be pathological and has been labelled ``the... |
0908.0034 | Ertan G\"okl\"u | E. G\"okl\"u, C. L\"ammerzahl, A. Camacho, A. Macias | Space--time fluctuations and the spreading of wavepackets | 11 pages | Class.Quant.Grav.26:225010,2009 | 10.1088/0264-9381/26/22/225010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a density matrix description in space we study the evolution of
wavepackets in a fluctuating space-time background. We assume that space-time
fluctuations manifest as classical fluctuations of the metric. From the
non-relativistic limit of a non-minimally coupled Klein-Gordon equation we
derive a Schr\"odinger ... | [
{
"created": "Mon, 3 Aug 2009 12:30:56 GMT",
"version": "v1"
}
] | 2010-04-30 | [
[
"Göklü",
"E.",
""
],
[
"Lämmerzahl",
"C.",
""
],
[
"Camacho",
"A.",
""
],
[
"Macias",
"A.",
""
]
] | Using a density matrix description in space we study the evolution of wavepackets in a fluctuating space-time background. We assume that space-time fluctuations manifest as classical fluctuations of the metric. From the non-relativistic limit of a non-minimally coupled Klein-Gordon equation we derive a Schr\"odinger eq... |
1106.5438 | Daniele Malafarina | Pankaj S. Joshi, Daniele Malafarina, and Ramesh Narayan | Equilibrium configurations from gravitational collapse | 13 pages, 3 figure. Replaced with published version, several changes
made according to referee's advise | 2011 Class. Quantum Grav. 28 235018 | 10.1088/0264-9381/28/23/235018 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop here a new procedure within Einstein's theory of gravity to
generate equilibrium configurations that result as the final state of
gravitational collapse from regular initial conditions. As a simplification, we
assume that the collapsing fluid is supported only by tangential pressure. We
show that the equil... | [
{
"created": "Mon, 27 Jun 2011 16:44:50 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Nov 2011 10:45:47 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Joshi",
"Pankaj S.",
""
],
[
"Malafarina",
"Daniele",
""
],
[
"Narayan",
"Ramesh",
""
]
] | We develop here a new procedure within Einstein's theory of gravity to generate equilibrium configurations that result as the final state of gravitational collapse from regular initial conditions. As a simplification, we assume that the collapsing fluid is supported only by tangential pressure. We show that the equilib... |
1010.6192 | Stephen Fairhurst | Stephen Fairhurst | Source localization with an advanced gravitational wave detector network | 13 pages, 2 figures, updated with published version | Class.Quant.Grav.28:105021,2011 | 10.1088/0264-9381/28/10/105021 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive an expression for the accuracy with which sources can be localized
using a network of gravitational wave detectors. The result is obtained via
triangulation, using timing accuracies at each detector and is applicable to a
network with any number of detectors. We use this result to investigate the
ability of... | [
{
"created": "Fri, 29 Oct 2010 12:40:07 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Dec 2012 11:20:48 GMT",
"version": "v2"
}
] | 2012-12-18 | [
[
"Fairhurst",
"Stephen",
""
]
] | We derive an expression for the accuracy with which sources can be localized using a network of gravitational wave detectors. The result is obtained via triangulation, using timing accuracies at each detector and is applicable to a network with any number of detectors. We use this result to investigate the ability of a... |
0706.3994 | Vitaly Vanchurin | Jin U Kang, Vitaly Vanchurin, Sergei Winitzki | Attractor scenarios and superluminal signals in k-essence cosmology | 27 pages, RevTeX4. Minor cosmetic changes, references added | Phys.Rev.D76:083511,2007 | 10.1103/PhysRevD.76.083511 | null | gr-qc astro-ph hep-ph hep-th | null | Cosmological scenarios with k-essence are invoked in order to explain the
observed late-time acceleration of the universe. These scenarios avoid the need
for fine-tuned initial conditions (the "coincidence problem") because of the
attractor-like dynamics of the k-essence field \phi. It was recently shown that
all k-e... | [
{
"created": "Wed, 27 Jun 2007 19:00:57 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Jun 2007 13:39:22 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Kang",
"Jin U",
""
],
[
"Vanchurin",
"Vitaly",
""
],
[
"Winitzki",
"Sergei",
""
]
] | Cosmological scenarios with k-essence are invoked in order to explain the observed late-time acceleration of the universe. These scenarios avoid the need for fine-tuned initial conditions (the "coincidence problem") because of the attractor-like dynamics of the k-essence field \phi. It was recently shown that all k-ess... |
1701.05767 | Mustapha Azreg-A\"inou | Mustapha Azreg-A\"inou | Accretion of rotating fluids onto stationary solutions | 11 pages, no figures, a few minor corrections. To appear in Phys.
Rev. D | Phys. Rev. D 95, 083002 (2017) | 10.1103/PhysRevD.95.083002 | null | gr-qc astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a general stationary solution and derive the general laws for
accretion of rotating perfect fluids. For non-degenerate and degenerate Fermi
and Bose fluids we derive new effects that mimic the center-of-mass-energy
effect of two colliding particle in the vicinity of horizons. Non-degenerate
fluids see the... | [
{
"created": "Fri, 20 Jan 2017 11:39:34 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Mar 2017 09:16:58 GMT",
"version": "v2"
}
] | 2017-04-07 | [
[
"Azreg-Aïnou",
"Mustapha",
""
]
] | We consider a general stationary solution and derive the general laws for accretion of rotating perfect fluids. For non-degenerate and degenerate Fermi and Bose fluids we derive new effects that mimic the center-of-mass-energy effect of two colliding particle in the vicinity of horizons. Non-degenerate fluids see their... |
gr-qc/0410134 | Daniele Oriti | Daniele Oriti | The Feynman propagator for spin foam quantum gravity | RevTex, 5 pages, no figures; v2-3:minor typos corrected | Phys.Rev.Lett. 94 (2005) 111301 | 10.1103/PhysRevLett.94.111301 | DAMTP-2004-120 | gr-qc hep-th | null | We link the notion causality with the orientation of the 2-complex on which
spin foam models are based. We show that all current spin foam models are
orientation-independent, pointing out the mathematical structure behind this
independence. Using the technology of evolution kernels for quantum
fields/particles on Lie... | [
{
"created": "Wed, 27 Oct 2004 23:09:15 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Oct 2004 17:37:00 GMT",
"version": "v2"
},
{
"created": "Tue, 19 Apr 2005 13:39:12 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Oriti",
"Daniele",
""
]
] | We link the notion causality with the orientation of the 2-complex on which spin foam models are based. We show that all current spin foam models are orientation-independent, pointing out the mathematical structure behind this independence. Using the technology of evolution kernels for quantum fields/particles on Lie g... |
1504.07832 | Du\v{s}ko Borka | D. Borka, S. Capozziello, P. Jovanovi\'c, and V. Borka Jovanovi\'c | Probing hybrid modified gravity by stellar motion around Galactic Centre | 11 pages, 4 figures, accepted for publication in Astroparticle
Physics | null | 10.1016/j.astropartphys.2016.03.002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider possible signatures for the so called {\it hybrid gravity} within
the Galactic Central Parsec. This modified theory of gravity consists of a
superposition of the metric Einstein-Hilbert Lagrangian with an $f(R)$ term
constructed {\it \`{a} la Palatini} and can be easily reduced to an equivalent
scalar-ten... | [
{
"created": "Wed, 29 Apr 2015 12:31:52 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Mar 2016 12:29:25 GMT",
"version": "v2"
}
] | 2016-04-20 | [
[
"Borka",
"D.",
""
],
[
"Capozziello",
"S.",
""
],
[
"Jovanović",
"P.",
""
],
[
"Jovanović",
"V. Borka",
""
]
] | We consider possible signatures for the so called {\it hybrid gravity} within the Galactic Central Parsec. This modified theory of gravity consists of a superposition of the metric Einstein-Hilbert Lagrangian with an $f(R)$ term constructed {\it \`{a} la Palatini} and can be easily reduced to an equivalent scalar-tenso... |
gr-qc/0505101 | Gonzalo Olmo | Gonzalo J. Olmo | The gravity lagrangian according to solar system experiments | 4 pages, revtex4 | Phys.Rev.Lett.95:261102,2005 | 10.1103/PhysRevLett.95.261102 | null | gr-qc astro-ph hep-th | null | In this work we show that the gravity lagrangian f(R) at relatively low
curvatures in both metric and Palatini formalisms is a bounded function that
can only depart from the linearity within the limits defined by well known
functions. We obtain those functions by analysing a set of inequalities that
any f(R) theory m... | [
{
"created": "Fri, 20 May 2005 16:58:32 GMT",
"version": "v1"
},
{
"created": "Sun, 22 May 2005 01:47:50 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Olmo",
"Gonzalo J.",
""
]
] | In this work we show that the gravity lagrangian f(R) at relatively low curvatures in both metric and Palatini formalisms is a bounded function that can only depart from the linearity within the limits defined by well known functions. We obtain those functions by analysing a set of inequalities that any f(R) theory mus... |
gr-qc/0303063 | A. M. Khokhlov | A.M. Khokhlov (Naval Research Laboratory, Washington DC, USA) and I.D.
Novikov (Theoretical Astrophysics Center, Copenhagen, Denmark) | A scalar hyperbolic equation with GR-type non-linearity | submitted to Class. Quantum Grav | Int.J.Mod.Phys. D12 (2003) 1889-1904 | 10.1142/S0218271803004390 | null | gr-qc | null | We study a scalar hyperbolic partial differential equation with non-linear
terms similar to those of the equations of general relativity. The equation has
a number of non-trivial analytical solutions whose existence rely on a delicate
balance between linear and non-linear terms. We formulate two classes of
second-ord... | [
{
"created": "Tue, 18 Mar 2003 17:00:51 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Mar 2003 21:11:24 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Khokhlov",
"A. M.",
"",
"Naval Research Laboratory, Washington DC, USA"
],
[
"Novikov",
"I. D.",
"",
"Theoretical Astrophysics Center, Copenhagen, Denmark"
]
] | We study a scalar hyperbolic partial differential equation with non-linear terms similar to those of the equations of general relativity. The equation has a number of non-trivial analytical solutions whose existence rely on a delicate balance between linear and non-linear terms. We formulate two classes of second-order... |
2110.14480 | Hamza Boumaza | Hamza Boumaza | Axial perturbations of neutron stars with shift symmetric conformal
coupling | null | null | 10.1103/PhysRevD.105.044052 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this present work, the axial quasi-normal modes of neutron stars, with a
shift symmetric conformal coupling, are studied for different realistic
equations of state. First, we derive the background equations in static and
spherically symmetric spacetime and then we solve them numerically by taking
into account the ... | [
{
"created": "Wed, 27 Oct 2021 14:53:00 GMT",
"version": "v1"
}
] | 2022-03-09 | [
[
"Boumaza",
"Hamza",
""
]
] | In this present work, the axial quasi-normal modes of neutron stars, with a shift symmetric conformal coupling, are studied for different realistic equations of state. First, we derive the background equations in static and spherically symmetric spacetime and then we solve them numerically by taking into account the co... |
2405.02193 | Massimo Giovannini | Massimo Giovannini | Relic gravitons and non-stationary processes | 28 pages, 3 figures | null | null | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | Stationary processes do not accurately describe the diffuse backgrounds of
relic gravitons whose correlations are homogeneous in space (i.e. only
dependent upon the distance between the two spatial locations) but not in time.
The symmetries of the autocorrelations ultimately reflect the quantum
mechanical origin of t... | [
{
"created": "Fri, 3 May 2024 15:50:26 GMT",
"version": "v1"
}
] | 2024-05-06 | [
[
"Giovannini",
"Massimo",
""
]
] | Stationary processes do not accurately describe the diffuse backgrounds of relic gravitons whose correlations are homogeneous in space (i.e. only dependent upon the distance between the two spatial locations) but not in time. The symmetries of the autocorrelations ultimately reflect the quantum mechanical origin of the... |
gr-qc/0702118 | Guglielmo Tino | G. M. Tino, F. Vetrano | Is it possible to detect gravitational waves with atom interferometers? | null | Class.Quant.Grav.24:2167-2178,2007 | 10.1088/0264-9381/24/9/001 | null | gr-qc physics.atom-ph quant-ph | null | We investigate the possibility to use atom interferometers to detect
gravitational waves. We discuss the interaction of gravitational waves with an
atom interferometer and analyze possible schemes.
| [
{
"created": "Wed, 21 Feb 2007 18:35:48 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Tino",
"G. M.",
""
],
[
"Vetrano",
"F.",
""
]
] | We investigate the possibility to use atom interferometers to detect gravitational waves. We discuss the interaction of gravitational waves with an atom interferometer and analyze possible schemes. |
1202.3598 | Amine Benachour | Amine Benachour | On f(R) theories equivalent to general relativity for a specific form of
the Ricci scalar | 16 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove the necessary and the sufficient condition on the f(R) function
leading to the equivalence of general relativity and the f(R) theory in the
sense that for a spacetime with specific Ricci scalar, GR and the f(R) theory
will necessarily have the same solutions. We show how this condition and its
consequences a... | [
{
"created": "Thu, 16 Feb 2012 14:19:14 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Apr 2012 14:14:46 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Jun 2015 01:04:16 GMT",
"version": "v3"
},
{
"created": "Fri, 21 Dec 2018 21:30:45 GMT",
"version": "v4"
}
] | 2018-12-27 | [
[
"Benachour",
"Amine",
""
]
] | We prove the necessary and the sufficient condition on the f(R) function leading to the equivalence of general relativity and the f(R) theory in the sense that for a spacetime with specific Ricci scalar, GR and the f(R) theory will necessarily have the same solutions. We show how this condition and its consequences all... |
2306.10897 | Adailton Ara\'ujo Filho | A. A. Ara\'ujo Filho, H. Hassanabadi, J. A. A. S. Reis, L.
Lisboa-Santos | Fermions with Electric Dipole Moment in curved spacetime | 23 pages, and 2 figures | International Journal of Modern Physics A (2024) 2450078 | 10.1142/S0217751X24500787 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper explores the relativistic behavior of spin--half particles
possessing an Electric Dipole Moment (EDM) in a curved spacetime background
induced by a spiral dislocation. A thorough review of the mathematical
formulation of the Dirac spinor in the framework of quantum field theory sets
the foundation for our ... | [
{
"created": "Mon, 19 Jun 2023 12:53:37 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Aug 2024 17:32:42 GMT",
"version": "v2"
}
] | 2024-08-05 | [
[
"Filho",
"A. A. Araújo",
""
],
[
"Hassanabadi",
"H.",
""
],
[
"Reis",
"J. A. A. S.",
""
],
[
"Lisboa-Santos",
"L.",
""
]
] | This paper explores the relativistic behavior of spin--half particles possessing an Electric Dipole Moment (EDM) in a curved spacetime background induced by a spiral dislocation. A thorough review of the mathematical formulation of the Dirac spinor in the framework of quantum field theory sets the foundation for our in... |
1311.1590 | Karl\'ucio Castello-Branco | K. H. C. Castello-Branco and J. F. da Rocha-Neto | Gravitational Pressure and the Accelerating Universe | Totally revised version, with new results and discussions; references
added and deleted | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of the Teleparallel Equivalent of General Relativity (TEGR)
one can obtain an alternative insight into General Relativity, as has been
shown in addressing properties as energy, momentum and angular momentum of the
gravitational field. In this paper, we apply the definition, that arises from
the field e... | [
{
"created": "Thu, 7 Nov 2013 07:43:55 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Jul 2014 05:34:27 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Jun 2018 03:30:38 GMT",
"version": "v3"
}
] | 2018-06-11 | [
[
"Castello-Branco",
"K. H. C.",
""
],
[
"da Rocha-Neto",
"J. F.",
""
]
] | In the context of the Teleparallel Equivalent of General Relativity (TEGR) one can obtain an alternative insight into General Relativity, as has been shown in addressing properties as energy, momentum and angular momentum of the gravitational field. In this paper, we apply the definition, that arises from the field equ... |
2408.07290 | Ioannis Soranidis | Ioannis Soranidis | Properties of dynamical regular black holes in semiclassical gravity | 11 pages, 3 figures. Contribution to the proceedings of the 17th
Marcel Grossmann meeting (7-12 July 2024) to be published by World
Scientific. Comments welcome! | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Regular black holes have become a popular alternative to the singular
mathematical black holes predicted by general relativity as they circumvent
mathematical pathologies associated with the singularity while preserving
crucial black hole features such as the trapping of light. Based on the
assumption that semiclassi... | [
{
"created": "Wed, 14 Aug 2024 04:44:49 GMT",
"version": "v1"
}
] | 2024-08-15 | [
[
"Soranidis",
"Ioannis",
""
]
] | Regular black holes have become a popular alternative to the singular mathematical black holes predicted by general relativity as they circumvent mathematical pathologies associated with the singularity while preserving crucial black hole features such as the trapping of light. Based on the assumption that semiclassica... |
2402.13996 | Gabriel Luz Almeida | Gabriel Luz Almeida | Binary dynamics to second post-Newtonian order in scalar-tensor and
Einstein-scalar-Gauss-Bonnet gravity from effective field theory | 29 pages, 16 figures. Typos corrected. Matches published version | Phys.Rev.D 109 (2024) 8, 084060 | 10.1103/PhysRevD.109.084060 | USTC-ICTS/PCFT-24-10 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using effective field theory methods, we compute in detail the Lagrangian for
the conservative dynamics of compact binary systems, for spinless constituents
and in the gravitationally bound case, in massless scalar-tensor (ST) and
Einstein-scalar-Gauss-Bonnet gravity (EsGB) to the second post-Newtonian (2PN)
order. W... | [
{
"created": "Wed, 21 Feb 2024 18:28:27 GMT",
"version": "v1"
},
{
"created": "Sun, 5 May 2024 06:45:20 GMT",
"version": "v2"
}
] | 2024-05-07 | [
[
"Almeida",
"Gabriel Luz",
""
]
] | Using effective field theory methods, we compute in detail the Lagrangian for the conservative dynamics of compact binary systems, for spinless constituents and in the gravitationally bound case, in massless scalar-tensor (ST) and Einstein-scalar-Gauss-Bonnet gravity (EsGB) to the second post-Newtonian (2PN) order. We ... |
1305.6890 | Samuel E. Gralla | T. Daniel Brennan, Samuel E. Gralla, Ted Jacobson | Exact Solutions to Force-Free Electrodynamics in Black Hole Backgrounds | matches published version | Class. Quantum Grav. 30 195012 (2013) | 10.1088/0264-9381/30/19/195012 | null | gr-qc astro-ph.HE physics.plasm-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A shared property of several of the known exact solutions to the equations of
force-free electrodynamics is that their charge-current four-vector is
\textit{null}. We examine the general properties of null-current solutions and
then focus on the principal congruences of the Kerr black hole spacetime. We
obtain a larg... | [
{
"created": "Wed, 29 May 2013 18:12:18 GMT",
"version": "v1"
},
{
"created": "Fri, 31 May 2013 14:51:00 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Oct 2013 21:02:06 GMT",
"version": "v3"
}
] | 2015-06-16 | [
[
"Brennan",
"T. Daniel",
""
],
[
"Gralla",
"Samuel E.",
""
],
[
"Jacobson",
"Ted",
""
]
] | A shared property of several of the known exact solutions to the equations of force-free electrodynamics is that their charge-current four-vector is \textit{null}. We examine the general properties of null-current solutions and then focus on the principal congruences of the Kerr black hole spacetime. We obtain a large ... |
1905.10931 | Seth Kurankyi Asante | Seth K. Asante, Bianca Dittrich, Florian Hopfmueller | Holographic formulation of 3D metric gravity with finite boundaries | 47 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we construct holographic boundary theories for linearized 3D
gravity, for a general family of finite or quasi-local boundaries. These
boundary theories are directly derived from the dynamics of 3D gravity by
computing the effective action for a geometric boundary observable, which
measures the geodesic l... | [
{
"created": "Mon, 27 May 2019 01:45:55 GMT",
"version": "v1"
}
] | 2019-05-28 | [
[
"Asante",
"Seth K.",
""
],
[
"Dittrich",
"Bianca",
""
],
[
"Hopfmueller",
"Florian",
""
]
] | In this work we construct holographic boundary theories for linearized 3D gravity, for a general family of finite or quasi-local boundaries. These boundary theories are directly derived from the dynamics of 3D gravity by computing the effective action for a geometric boundary observable, which measures the geodesic len... |
gr-qc/9703055 | Ichiro Oda | Ichiro Oda | Evaporation of Three Dimensional Black Hole in Quantum Gravity | 13 pages, phyzzx | Phys.Lett. B409 (1997) 88-93 | 10.1016/S0370-2693(97)00853-8 | EDO-EP-9 | gr-qc | null | We discuss an evaporation of (2+1)-dimensional black hole by using quantum
gravity holding in the vicinity of the black hole horizon. It is shown that the
black hole evaporates at a definite rate by emitting matters through the
quantum tunneling effect. A relation of the present formalism to the black hole
entropy is... | [
{
"created": "Fri, 21 Mar 1997 06:12:14 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Oda",
"Ichiro",
""
]
] | We discuss an evaporation of (2+1)-dimensional black hole by using quantum gravity holding in the vicinity of the black hole horizon. It is shown that the black hole evaporates at a definite rate by emitting matters through the quantum tunneling effect. A relation of the present formalism to the black hole entropy is b... |
1711.05229 | Marcus Khuri | Marcus Khuri, Gilbert Weinstein, Sumio Yamada | Stationary Vacuum Black Holes in 5 Dimensions | 30 pages | Comm. Partial Differential Equations, 43 (2018), no. 8, 1205-1241 | null | null | gr-qc hep-th math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the problem of asymptotically flat bi-axially symmetric stationary
solutions of the vacuum Einstein equations in $5$-dimensional spacetime. In
this setting, the cross section of any connected component of the event horizon
is a prime $3$-manifold of positive Yamabe type, namely the $3$-sphere $S^3$,
the ring... | [
{
"created": "Tue, 14 Nov 2017 18:08:31 GMT",
"version": "v1"
},
{
"created": "Sun, 22 Sep 2019 14:03:35 GMT",
"version": "v2"
}
] | 2019-09-24 | [
[
"Khuri",
"Marcus",
""
],
[
"Weinstein",
"Gilbert",
""
],
[
"Yamada",
"Sumio",
""
]
] | We study the problem of asymptotically flat bi-axially symmetric stationary solutions of the vacuum Einstein equations in $5$-dimensional spacetime. In this setting, the cross section of any connected component of the event horizon is a prime $3$-manifold of positive Yamabe type, namely the $3$-sphere $S^3$, the ring $... |
2010.12863 | Javlon Rayimbaev Javlon | Javlon Rayimbaev, Pulat Tadjimuratov, Ahmadjon Abdujabbarov, Bobomurat
Ahmedov, Malika Khudoyberdieva | Dynamics of test particles around regular black holes in modified
gravity | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the work, we have presented detailed analyses of the event horizon and
curvature properties of spacetime around a regular black hole in modified
gravity so-called regular MOG black hole. The motion of neutral, electrically
charged and magnetized particles with magnetic dipole moment, in the close
environment of th... | [
{
"created": "Sat, 24 Oct 2020 10:34:49 GMT",
"version": "v1"
}
] | 2020-10-27 | [
[
"Rayimbaev",
"Javlon",
""
],
[
"Tadjimuratov",
"Pulat",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
],
[
"Ahmedov",
"Bobomurat",
""
],
[
"Khudoyberdieva",
"Malika",
""
]
] | In the work, we have presented detailed analyses of the event horizon and curvature properties of spacetime around a regular black hole in modified gravity so-called regular MOG black hole. The motion of neutral, electrically charged and magnetized particles with magnetic dipole moment, in the close environment of the ... |
1105.5149 | Diego Blas | Diego Blas and Hillary Sanctuary | Gravitational Radiation in Horava Gravity | 30 pages, no figures. v2: Comparison with scalar-tensor improved,
typos corrected, 1 ref. updated. v3: Matches published version. 1 ref. added.
More accurate comparison with previous results | Phys.Rev.D84:064004,2011 | 10.1103/PhysRevD.84.064004 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the radiation of gravitational waves by self-gravitating binary
systems in the low-energy limit of Horava gravity. We find that the predictions
for the energy-loss formula of General Relativity are modified already for
Newtonian sources: the quadrupole contribution is altered, in part due to the
different sp... | [
{
"created": "Wed, 25 May 2011 20:43:04 GMT",
"version": "v1"
},
{
"created": "Mon, 30 May 2011 14:48:51 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Sep 2011 10:29:22 GMT",
"version": "v3"
}
] | 2011-10-11 | [
[
"Blas",
"Diego",
""
],
[
"Sanctuary",
"Hillary",
""
]
] | We study the radiation of gravitational waves by self-gravitating binary systems in the low-energy limit of Horava gravity. We find that the predictions for the energy-loss formula of General Relativity are modified already for Newtonian sources: the quadrupole contribution is altered, in part due to the different spee... |
2310.12097 | Rodrigo Tenorio | Rodrigo Tenorio | Blind-search constraints on the sub-kiloparsec population of continuous
gravitational-wave sources | 11 pages, 7 figures, comments welcome | null | null | LIGO-P2300346 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the latest all-sky continuous gravitational-wave (CW) searches to
estimate constraints on the sub-kiloparsec population of unknown neutron stars
(NS). We then extend this analysis to the forthcoming LIGO-Virgo-KAGRA
observing runs and the third generation (3G) of ground-based interferometric
detectors (Einstei... | [
{
"created": "Wed, 18 Oct 2023 16:38:35 GMT",
"version": "v1"
}
] | 2023-10-19 | [
[
"Tenorio",
"Rodrigo",
""
]
] | We use the latest all-sky continuous gravitational-wave (CW) searches to estimate constraints on the sub-kiloparsec population of unknown neutron stars (NS). We then extend this analysis to the forthcoming LIGO-Virgo-KAGRA observing runs and the third generation (3G) of ground-based interferometric detectors (Einstein ... |
2003.05931 | Leila Mirzagholi | Leila Mirzagholi, Eiichiro Komatsu, Kaloian D. Lozanov and Yuki
Watanabe | Effects of Gravitational Chern-Simons during Axion-SU(2) Inflation | 15 pages, 4 figures (v2) References added and typos corrected.
Submitted to JCAP | null | 10.1088/1475-7516/2020/06/024 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we examine the viability of inflation models with a spectator
axion field coupled to both gravitational and SU(2) gauge fields via
Chern-Simons couplings. Requiring phenomenological success of the axion-SU(2)
sector constrains the coupling strength of the gravitational Chern-Simons term.
We find that t... | [
{
"created": "Thu, 12 Mar 2020 17:54:14 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Mar 2020 15:00:22 GMT",
"version": "v2"
}
] | 2020-06-17 | [
[
"Mirzagholi",
"Leila",
""
],
[
"Komatsu",
"Eiichiro",
""
],
[
"Lozanov",
"Kaloian D.",
""
],
[
"Watanabe",
"Yuki",
""
]
] | In this paper, we examine the viability of inflation models with a spectator axion field coupled to both gravitational and SU(2) gauge fields via Chern-Simons couplings. Requiring phenomenological success of the axion-SU(2) sector constrains the coupling strength of the gravitational Chern-Simons term. We find that the... |
1710.04825 | Atsushi Nishizawa | Atsushi Nishizawa | Generalized framework for testing gravity with gravitational-wave
propagation. I. Formulation | 16 pages, 4 figures, Physical Review D accepted | Phys. Rev. D 97, 104037 (2018) | 10.1103/PhysRevD.97.104037 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The direct detection of gravitational waves (GW) from merging binary black
holes and neutron stars mark the beginning of a new era in gravitational
physics, and it brings forth new opportunities to test theories of gravity. To
this end, it is crucial to search for anomalous deviations from general
relativity in a mod... | [
{
"created": "Fri, 13 Oct 2017 06:56:43 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Nov 2017 16:46:21 GMT",
"version": "v2"
},
{
"created": "Fri, 20 Apr 2018 05:45:20 GMT",
"version": "v3"
}
] | 2018-05-30 | [
[
"Nishizawa",
"Atsushi",
""
]
] | The direct detection of gravitational waves (GW) from merging binary black holes and neutron stars mark the beginning of a new era in gravitational physics, and it brings forth new opportunities to test theories of gravity. To this end, it is crucial to search for anomalous deviations from general relativity in a model... |
1504.07609 | Bishop Mongwane | Bishop Mongwane | Toward a Consistent Framework for High Order Mesh Refinement Schemes in
Numerical Relativity | 21 pages, 10 figures | General Relativity and Gravitation 47(5), 2015 | 10.1007/s10714-015-1903-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has now become customary in the field of numerical relativity to couple
high order finite difference schemes to mesh refinement algorithms. To this
end, different modifications to the standard Berger-Oliger adaptive mesh
refinement algorithm have been proposed. In this work we present a fourth order
stable mesh re... | [
{
"created": "Tue, 28 Apr 2015 19:40:57 GMT",
"version": "v1"
}
] | 2015-04-29 | [
[
"Mongwane",
"Bishop",
""
]
] | It has now become customary in the field of numerical relativity to couple high order finite difference schemes to mesh refinement algorithms. To this end, different modifications to the standard Berger-Oliger adaptive mesh refinement algorithm have been proposed. In this work we present a fourth order stable mesh refi... |
gr-qc/0511062 | Juri Agresti | Juri Agresti, Yanbei Chen, Erika D'Ambrosio, Pavlin Savov | A duality relation between non-spherical mirror optical cavities and its
application to gravitational-wave detectors | 26 pages, 5 figures, minor changes matching the published version | J. Opt. Soc. Am. A 29, 1818-1827 (2012) | 10.1364/JOSAA.29.001818 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we analytically prove a unique duality relation between the
eigenspectra of paraxial optical cavities with non-spherical mirrors: a
one-to-one mapping between eigenmodes and eigenvalues of cavities deviating
from flat mirrors by $h(\vec{r})$ and cavities deviating from concentric
mirrors by $-h(\vec{r}... | [
{
"created": "Sun, 13 Nov 2005 02:00:22 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Mar 2014 14:28:51 GMT",
"version": "v2"
}
] | 2014-04-01 | [
[
"Agresti",
"Juri",
""
],
[
"Chen",
"Yanbei",
""
],
[
"D'Ambrosio",
"Erika",
""
],
[
"Savov",
"Pavlin",
""
]
] | In this paper, we analytically prove a unique duality relation between the eigenspectra of paraxial optical cavities with non-spherical mirrors: a one-to-one mapping between eigenmodes and eigenvalues of cavities deviating from flat mirrors by $h(\vec{r})$ and cavities deviating from concentric mirrors by $-h(\vec{r})$... |
2304.01267 | Laura Olivia Villegas Olvera | Laura O. Villegas, Claudia Moreno, Michael A. Pajkos, Michele Zanolin,
Javier M. Antelis | Parameter estimation from the core-bounce phase of rotating core
collapse supernovae in real interferometer noise | 17 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we propose an analytical model that reproduces the core-bounds
phase of gravitational waves (GW) of Rapidly Rotating (RR) from Core Collapse
Supernovae (CCSNe), as a function of three parameters, the arrival time $\tau$,
the ratio of the kinetic and potential energy $\beta$ and a phenomenological
paramet... | [
{
"created": "Mon, 3 Apr 2023 18:01:04 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jul 2024 04:31:40 GMT",
"version": "v2"
}
] | 2024-07-17 | [
[
"Villegas",
"Laura O.",
""
],
[
"Moreno",
"Claudia",
""
],
[
"Pajkos",
"Michael A.",
""
],
[
"Zanolin",
"Michele",
""
],
[
"Antelis",
"Javier M.",
""
]
] | In this work we propose an analytical model that reproduces the core-bounds phase of gravitational waves (GW) of Rapidly Rotating (RR) from Core Collapse Supernovae (CCSNe), as a function of three parameters, the arrival time $\tau$, the ratio of the kinetic and potential energy $\beta$ and a phenomenological parameter... |
gr-qc/9711005 | Samuel Rocha Oliveira | Marcelo E. Araujo, Patricio S. Letelier and Samuel R. Oliveira | Two Kerr black holes with axisymmetric spins: An improved Newtonian
model for the head-on collision and gravitational radiation | 8 pages, RevTeX, 2 figures, psbox macro included | Class.Quant.Grav. 15 (1998) 3051-3060 | 10.1088/0264-9381/15/10/011 | null | gr-qc | null | We present a semi-analytical approach to the interaction of two (originally)
Kerr black holes through a head-on collision process. An expression for the
rate of emission of gravitational radiation is derived from an exact solution
to the Einstein's field equations. The total amount of gravitational radiation
emitted ... | [
{
"created": "Mon, 3 Nov 1997 19:07:25 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Araujo",
"Marcelo E.",
""
],
[
"Letelier",
"Patricio S.",
""
],
[
"Oliveira",
"Samuel R.",
""
]
] | We present a semi-analytical approach to the interaction of two (originally) Kerr black holes through a head-on collision process. An expression for the rate of emission of gravitational radiation is derived from an exact solution to the Einstein's field equations. The total amount of gravitational radiation emitted in... |
1312.5133 | Andrea Maselli | Andrea Maselli, Valeria Ferrari | Low latency search for Gravitational waves from BH-NS binaries in
coincidence with Short Gamma Ray Bursts | 5 pages, 1 figure, changes in the introduction and in the concluding
remarks. Accepted for publication in Phys. Rev. D | null | 10.1103/PhysRevD.89.064056 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a procedure to be used in the search for gravitational waves from
black hole-neutron star coalescing binaries, in coincidence with short
gamma-ray bursts. It is based on two recently proposed semi-analytic fits, one
reproducing the mass of the remnant disk surrounding the black hole which forms
after the m... | [
{
"created": "Wed, 18 Dec 2013 13:42:11 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Feb 2014 08:31:46 GMT",
"version": "v2"
}
] | 2015-06-18 | [
[
"Maselli",
"Andrea",
""
],
[
"Ferrari",
"Valeria",
""
]
] | We propose a procedure to be used in the search for gravitational waves from black hole-neutron star coalescing binaries, in coincidence with short gamma-ray bursts. It is based on two recently proposed semi-analytic fits, one reproducing the mass of the remnant disk surrounding the black hole which forms after the mer... |
gr-qc/9606008 | Dr N. Mavromatos | N.E. Mavromatos | Eluding the No-Hair Conjecture for Black Holes | 16 pages LATEX, 1 Macro (hep93 sty) required; Invited Contribution to
the 5th Hellenic School and Workshops on High-Energy Physics, Corfu (Greece),
September 3-24 1995 | null | null | Oxford preprint OUTP-96-28P | gr-qc hep-th | null | I discuss a recent analytic proof of bypassing the no-hair conjecture for two
interesting (and quite generic) cases of four-dimensional black holes: (i)
black holes in Einstein-Yang-Mills-Higgs (EYMH) systems and (ii) black holes in
higher-curvature (Gauss-Bonnet (GB) type) string-inspired gravity. Both systems
are k... | [
{
"created": "Wed, 5 Jun 1996 22:22:59 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mavromatos",
"N. E.",
""
]
] | I discuss a recent analytic proof of bypassing the no-hair conjecture for two interesting (and quite generic) cases of four-dimensional black holes: (i) black holes in Einstein-Yang-Mills-Higgs (EYMH) systems and (ii) black holes in higher-curvature (Gauss-Bonnet (GB) type) string-inspired gravity. Both systems are kno... |
1610.00553 | Macarena Lagos | Macarena Lagos, Pedro G. Ferreira | A general theory of linear cosmological perturbations: bimetric theories | Published version with extra comments in conclusion | null | 10.1088/1475-7516/2017/01/047 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We implement the method developed in [1] to construct the most general
parametrised action for linear cosmological perturbations of bimetric theories
of gravity. Specifically, we consider perturbations around a homogeneous and
isotropic background, and identify the complete form of the action invariant
under diffeomo... | [
{
"created": "Mon, 3 Oct 2016 13:53:36 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Jan 2017 14:23:26 GMT",
"version": "v2"
}
] | 2017-01-27 | [
[
"Lagos",
"Macarena",
""
],
[
"Ferreira",
"Pedro G.",
""
]
] | We implement the method developed in [1] to construct the most general parametrised action for linear cosmological perturbations of bimetric theories of gravity. Specifically, we consider perturbations around a homogeneous and isotropic background, and identify the complete form of the action invariant under diffeomorp... |
gr-qc/9809082 | David Hartley | Edward D. Fackerell and David Hartley | On Waylen's regular axisymmetric similarity solutions | 8 pages, LaTeX2e | Gen.Rel.Grav. 32 (2000) 856-864 | 10.1023/A:1001980923501 | ADP-98-38/M69 | gr-qc | null | We review the similarity solutions proposed by Waylen for a regular
time-dependent axisymmetric vacuum space-time, and show that the key equation
introduced to solve the invariant surface conditions is related by a Baecklund
transform to a restriction on the similarity variables. We further show that
the vacuum space... | [
{
"created": "Wed, 30 Sep 1998 02:28:24 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Fackerell",
"Edward D.",
""
],
[
"Hartley",
"David",
""
]
] | We review the similarity solutions proposed by Waylen for a regular time-dependent axisymmetric vacuum space-time, and show that the key equation introduced to solve the invariant surface conditions is related by a Baecklund transform to a restriction on the similarity variables. We further show that the vacuum space-t... |
gr-qc/0109019 | Alvaro L. | H. N. N\'u\~nez-Y\'epez | Isotropic evolution of a JBD anisotropic Bianchi universe | 10 pages, 9 figures, accepted for publication in Gen. Rel. Grav.
Scheduled for publication in October 2001 | Gen.Rel.Grav. 33 (2001) 1767-1782 | 10.1023/A:1013027201473 | null | gr-qc | null | I study the dynamical effects due to the Brans-Dicke scalar $\phi$-field at
the early stages of a supposedly anisotropic Universe expansion in the
scalar-tensor cosmology of Jordan-Brans-Dicke. This is done considering the
behaviour of the general solutions for the homogeneous model of Bianchi type
VII in the vacuum ... | [
{
"created": "Wed, 5 Sep 2001 22:56:20 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Núñez-Yépez",
"H. N.",
""
]
] | I study the dynamical effects due to the Brans-Dicke scalar $\phi$-field at the early stages of a supposedly anisotropic Universe expansion in the scalar-tensor cosmology of Jordan-Brans-Dicke. This is done considering the behaviour of the general solutions for the homogeneous model of Bianchi type VII in the vacuum ca... |
0811.1805 | Michael Good | Michael R.R. Good | On a Nonlinear Newtonian Gravity and Charging a Black Hole | 19 pages, 3 figures, To appear in the American Journal of Physics | American Journal of Physics 86, 453 (2018) | 10.1119/1.5030543 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A scalar field gravitational analog of the Reissner-Nordstrom solution is
investigated. The nonlinear Newtonian model has an upper-limit of charge for a
central mass which agrees with the general relativistic condition required for
the existence of the black hole horizon. The maximum limit for accumulation by
bombard... | [
{
"created": "Wed, 12 Nov 2008 02:30:51 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Apr 2018 14:19:57 GMT",
"version": "v2"
}
] | 2018-05-21 | [
[
"Good",
"Michael R. R.",
""
]
] | A scalar field gravitational analog of the Reissner-Nordstrom solution is investigated. The nonlinear Newtonian model has an upper-limit of charge for a central mass which agrees with the general relativistic condition required for the existence of the black hole horizon. The maximum limit for accumulation by bombardme... |
1208.4649 | Julio Cesar Fabris | J.C. Fabris | Conservation Laws in Gravitation and Cosmology | Latex file, 19 pages, 1 figure in eps format. Published in the
proceedings of Mario Novello's 70th Anniversary Symposium, edited by Nelson
Pinto Neto and Santiago E. Perez Bergliaffa, Livraria da Fisica, 2012 | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of conservation laws is one of the most important requirement
of physical theories. Some of them, like energy conservation, knows no
experimental exception. However, the generalization of these conservation laws
to curved space presents many challenges. The implementation of conservation
laws in the Gen... | [
{
"created": "Thu, 23 Aug 2012 00:14:19 GMT",
"version": "v1"
}
] | 2012-08-24 | [
[
"Fabris",
"J. C.",
""
]
] | The existence of conservation laws is one of the most important requirement of physical theories. Some of them, like energy conservation, knows no experimental exception. However, the generalization of these conservation laws to curved space presents many challenges. The implementation of conservation laws in the Gener... |
2101.09582 | Perseas Christodoulidis | Perseas Christodoulidis, Andronikos Paliathanasis | $\mathcal{N}$-field cosmology in hyperbolic field space: stability and
general solutions | v2: refs added and small rearrangements to match published version;
v1: 14 pages, 7 figures | JCAP05(2021)038 | 10.1088/1475-7516/2021/05/038 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the dynamics of a cosmological model with a perfect fluid and
$\mathcal{N}$ fields on a hyperbolic field space interacting via a symmetric
potential. We list all late-time solutions, investigate their stability and
briefly discuss predictions of the theory. Moreover, for the case of two scalar
fields and an ... | [
{
"created": "Sat, 23 Jan 2021 20:37:14 GMT",
"version": "v1"
},
{
"created": "Tue, 18 May 2021 14:20:59 GMT",
"version": "v2"
}
] | 2021-06-01 | [
[
"Christodoulidis",
"Perseas",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | We study the dynamics of a cosmological model with a perfect fluid and $\mathcal{N}$ fields on a hyperbolic field space interacting via a symmetric potential. We list all late-time solutions, investigate their stability and briefly discuss predictions of the theory. Moreover, for the case of two scalar fields and an ex... |
1106.1295 | Houwen Wu | Deyou Chen, Benrong Mu, Houwen Wu, Haitang Yang | One-dimensional quantum channel and Hawking radiation of the Kerr and
Kerr-Newman black holes | V2, 12 pages. Typo corrected | Int.J.Theor.Phys. 52 (2013) 1593-1602 | 10.1007/s10773-012-1478-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we review the one-dimensional quantum channel and investigate
Hawking radiation of bosons and fermions in Kerr and Kerr-Newman black holes.
The result shows the Hawking radiation can be described by the quantum channel.
The thermal conductances are derived and related to the black holes'
temperatures.
| [
{
"created": "Tue, 7 Jun 2011 09:34:25 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Mar 2012 19:22:41 GMT",
"version": "v2"
}
] | 2013-11-14 | [
[
"Chen",
"Deyou",
""
],
[
"Mu",
"Benrong",
""
],
[
"Wu",
"Houwen",
""
],
[
"Yang",
"Haitang",
""
]
] | In this paper, we review the one-dimensional quantum channel and investigate Hawking radiation of bosons and fermions in Kerr and Kerr-Newman black holes. The result shows the Hawking radiation can be described by the quantum channel. The thermal conductances are derived and related to the black holes' temperatures. |
gr-qc/0106048 | Diego F. Torres | Gustavo E. Romero, and Diego F. Torres | Self-existing objects and auto-generated information in
chronology-violating space-times: A philosophical discussion | Accepted for publication in Modern Physics Letters A | Mod.Phys.Lett. A16 (2001) 1213-1222 | 10.1142/S0217732301004467 | null | gr-qc | null | Closed time-like curves naturally appear in a variety of chronology-violating
space-times. In these space-times, the Principle of Self-Consistency demands an
harmony between local and global affairs that excludes grandfather-like
paradoxes. However, self-existing objects trapped in CTCs are not seemingly
avoided by t... | [
{
"created": "Thu, 14 Jun 2001 13:47:17 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Romero",
"Gustavo E.",
""
],
[
"Torres",
"Diego F.",
""
]
] | Closed time-like curves naturally appear in a variety of chronology-violating space-times. In these space-times, the Principle of Self-Consistency demands an harmony between local and global affairs that excludes grandfather-like paradoxes. However, self-existing objects trapped in CTCs are not seemingly avoided by the... |
1202.6330 | Jose Manuel Velhinho | Jer\'onimo Cortez, Guillermo A. Mena Marug\'an, Javier Olmedo, Jos\'e
M. Velhinho | Criteria for the determination of time dependent scalings in the Fock
quantization of scalar fields with a time dependent mass in ultrastatic
spacetimes | 37 pages. Modified title. Improved discussion concerning the spatial
symmetry group. New section (section VI) | Phys. Rev. D 86, 104003 (2012) | 10.1103/PhysRevD.86.104003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For Klein-Gordon fields, it is well known that there exist an infinite number
of nonequivalent Fock representations of the canonical commutation relations
and, therefore, of inequivalent quantum theories. A context in which this kind
of ambiguities arises and prevents the derivation of robust results is, e.g.,
in the... | [
{
"created": "Tue, 28 Feb 2012 19:30:05 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Oct 2012 15:54:16 GMT",
"version": "v2"
}
] | 2015-06-04 | [
[
"Cortez",
"Jerónimo",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
],
[
"Olmedo",
"Javier",
""
],
[
"Velhinho",
"José M.",
""
]
] | For Klein-Gordon fields, it is well known that there exist an infinite number of nonequivalent Fock representations of the canonical commutation relations and, therefore, of inequivalent quantum theories. A context in which this kind of ambiguities arises and prevents the derivation of robust results is, e.g., in the q... |
1007.2809 | David Radice | David Radice, Luciano Rezzolla and Thorsten Kellermann | Critical Phenomena in Neutron Stars I: Linearly Unstable Nonrotating
Models | 15 pages, 9 figures | Class.Quant.Grav.27:235015,2010 | 10.1088/0264-9381/27/23/235015 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the evolution in full general relativity of a family of linearly
unstable isolated spherical neutron stars under the effects of very small,
perturbations as induced by the truncation error. Using a simple ideal-fluid
equation of state we find that this system exhibits a type-I critical
behaviour, thus con... | [
{
"created": "Fri, 16 Jul 2010 16:38:40 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Nov 2010 14:29:32 GMT",
"version": "v2"
}
] | 2011-07-18 | [
[
"Radice",
"David",
""
],
[
"Rezzolla",
"Luciano",
""
],
[
"Kellermann",
"Thorsten",
""
]
] | We consider the evolution in full general relativity of a family of linearly unstable isolated spherical neutron stars under the effects of very small, perturbations as induced by the truncation error. Using a simple ideal-fluid equation of state we find that this system exhibits a type-I critical behaviour, thus confi... |
1209.5148 | Suraj Hegde | Suraj S. Hegde, C. V. Vishveshwara | Analytical Theory of Optical Black Hole Analogues | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop an analytical formalism for studying optical analogues of
spherically symmetric black-hole spacetimes. We demonstrate the exact
similarity between the electromagnetic wave equations in an inhomogeneous
medium in flat spacetime and those in a general-relativistic curved spacetime
respectively. The permittiv... | [
{
"created": "Mon, 24 Sep 2012 04:35:41 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Sep 2012 13:20:12 GMT",
"version": "v2"
}
] | 2012-09-26 | [
[
"Hegde",
"Suraj S.",
""
],
[
"Vishveshwara",
"C. V.",
""
]
] | We develop an analytical formalism for studying optical analogues of spherically symmetric black-hole spacetimes. We demonstrate the exact similarity between the electromagnetic wave equations in an inhomogeneous medium in flat spacetime and those in a general-relativistic curved spacetime respectively. The permittivit... |
2110.12665 | Bibhas Majhi Ranjan | Surojit Dalui, Bibhas Ranjan Majhi, T. Padmanabhan | Thermal nature of a generic null surface | Minor modifications. This work is a tribute to Prof. T. Padmanabhan
(1957-2021), a co-author of this paper, and it carries the fond memory of our
last collaboration with him. To appear in Phys. Rev. D | null | 10.1103/PhysRevD.104.124080 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamical properties of a generic null surface are known to have a
thermodynamic interpretation. Such an interpretation is completely based on an
analogy between the usual law of thermodynamics and structure of gravitational
field equation on the surface. Here we materialise this analogy and show that
assigning a tem... | [
{
"created": "Mon, 25 Oct 2021 06:24:02 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Dec 2021 09:19:19 GMT",
"version": "v2"
}
] | 2022-01-12 | [
[
"Dalui",
"Surojit",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
],
[
"Padmanabhan",
"T.",
""
]
] | Dynamical properties of a generic null surface are known to have a thermodynamic interpretation. Such an interpretation is completely based on an analogy between the usual law of thermodynamics and structure of gravitational field equation on the surface. Here we materialise this analogy and show that assigning a tempe... |
gr-qc/0610095 | Mehrdad Farhoudi | Behrooz Malekolkalami and Mehrdad Farhoudi | About Gravitomagnetism | 16 pages, a few amendments have been performed and a new section has
been added | Mod.Phys.Lett.A24:601-613,2009 | 10.1142/S0217732309028618 | null | gr-qc physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitomagnetic field is the force exerted by a moving body on the basis
of the intriguing interplay between geometry and dynamics which is the analog
to the magnetic field of a moving charged body in electromagnetism. The
existence of such a field has been demonstrated based on special relativity
approach and al... | [
{
"created": "Thu, 19 Oct 2006 11:59:05 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Nov 2009 07:26:24 GMT",
"version": "v2"
}
] | 2016-09-16 | [
[
"Malekolkalami",
"Behrooz",
""
],
[
"Farhoudi",
"Mehrdad",
""
]
] | The gravitomagnetic field is the force exerted by a moving body on the basis of the intriguing interplay between geometry and dynamics which is the analog to the magnetic field of a moving charged body in electromagnetism. The existence of such a field has been demonstrated based on special relativity approach and also... |
0901.1119 | Dennis Bessada | Dennis Bessada and Oswaldo D. Miranda | CMB Polarization and Theories of Gravitation with Massive Gravitons | To appear in Classical and Quantum Gravity | Class.Quant.Grav.26:045005,2009 | 10.1088/0264-9381/26/4/045005 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study in this paper three different theories of gravitation with massive
gravitons - the modified Fierz-Pauli (FP) model, Massive Gravity and the
bimetric theory proposed by Visser - in linear perturbation theory around a
Minkowski and a flat FRW background. For the TT tensor perturbations we show
that the three t... | [
{
"created": "Thu, 8 Jan 2009 20:00:08 GMT",
"version": "v1"
}
] | 2009-03-24 | [
[
"Bessada",
"Dennis",
""
],
[
"Miranda",
"Oswaldo D.",
""
]
] | We study in this paper three different theories of gravitation with massive gravitons - the modified Fierz-Pauli (FP) model, Massive Gravity and the bimetric theory proposed by Visser - in linear perturbation theory around a Minkowski and a flat FRW background. For the TT tensor perturbations we show that the three the... |
2104.02314 | Jieci Wang | Qianqian Liu, Cuihong Wen, Zehua Tian, Jiliang Jing, Jieci Wang | Gravity enhanced quantum spatial target detection | 16 pages, 4 figures | Phys. Rev. A 105, 062428 (2022) | 10.1103/PhysRevA.105.062428 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum illumination can utilize entangled light to detect the
low-reflectivity target that is hidden in a bright thermal background. This
technique is applied to the detection of an object in the curved spacetime of
the Earth, in order to explore how the curvature of spacetime affects quantum
illumination. It is fou... | [
{
"created": "Tue, 6 Apr 2021 06:40:38 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Oct 2021 10:21:06 GMT",
"version": "v2"
},
{
"created": "Sat, 18 Jun 2022 03:01:11 GMT",
"version": "v3"
}
] | 2022-10-18 | [
[
"Liu",
"Qianqian",
""
],
[
"Wen",
"Cuihong",
""
],
[
"Tian",
"Zehua",
""
],
[
"Jing",
"Jiliang",
""
],
[
"Wang",
"Jieci",
""
]
] | Quantum illumination can utilize entangled light to detect the low-reflectivity target that is hidden in a bright thermal background. This technique is applied to the detection of an object in the curved spacetime of the Earth, in order to explore how the curvature of spacetime affects quantum illumination. It is found... |
1607.01806 | W. S. Hipolito-Ricaldi | Ramon Herrera, W. S. Hipolito-Ricaldi and Nelson Videla | Instability in interacting dark sector: An appropriate Holographic Ricci
dark energy model | 32 pages, 6 figures. Minor corrections, references added, accepted in
JCAP | null | 10.1088/1475-7516/2016/08/065 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we investigate the consequences of phantom crossing considering
the perturbative dynamics in models with interaction in their dark sector. By
mean of a general study of gauge-invariant variables in comoving gauge, we
relate the sources of instabilities in the structure formation process with the
phantom... | [
{
"created": "Wed, 6 Jul 2016 20:28:04 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Aug 2016 15:24:59 GMT",
"version": "v2"
}
] | 2016-09-07 | [
[
"Herrera",
"Ramon",
""
],
[
"Hipolito-Ricaldi",
"W. S.",
""
],
[
"Videla",
"Nelson",
""
]
] | In this paper we investigate the consequences of phantom crossing considering the perturbative dynamics in models with interaction in their dark sector. By mean of a general study of gauge-invariant variables in comoving gauge, we relate the sources of instabilities in the structure formation process with the phantom c... |
2103.08574 | James B. Hartle | James B. Hartle | Classical Physics and Hamiltonian Quantum Mechanics as Relics of the Big
Bang | 23p, 4 figures, revtex4, history of ths article on title page. arXiv
admin note: text overlap with arXiv:1805.12246 | null | null | null | gr-qc astro-ph.CO hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a fundamental formulation of the quantum mechanics of a closed system such
as the universe as a whole, three forms of information are needed to make
predictions for the probabilities of alternative time histories of the closed
system . These are the action functional of the elementary particles, the
quantum istate... | [
{
"created": "Mon, 15 Mar 2021 17:42:46 GMT",
"version": "v1"
}
] | 2021-03-16 | [
[
"Hartle",
"James B.",
""
]
] | In a fundamental formulation of the quantum mechanics of a closed system such as the universe as a whole, three forms of information are needed to make predictions for the probabilities of alternative time histories of the closed system . These are the action functional of the elementary particles, the quantum istate o... |
1908.04270 | Jorge Pullin | Rodrigo Eyheralde, Rodolfo Gambini, Jorge Pullin | Quantum fluctuating geometries and the information paradox II | 16 pages, RevTex, 6 figures | Class. Quantum Grav. 37, 065001 (2020) | 10.1088/1361-6382/ab6e89 | LSU-REL-081219 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a previous paper we discussed corrections to Hawking radiation from a
collapsing shell due to quantum fluctuations of the shell and the resulting
horizon. For the computation of the quantum corrections we used several
approximations. In this paper we take into account effects that were neglected
in the previous on... | [
{
"created": "Mon, 12 Aug 2019 17:34:16 GMT",
"version": "v1"
}
] | 2020-02-19 | [
[
"Eyheralde",
"Rodrigo",
""
],
[
"Gambini",
"Rodolfo",
""
],
[
"Pullin",
"Jorge",
""
]
] | In a previous paper we discussed corrections to Hawking radiation from a collapsing shell due to quantum fluctuations of the shell and the resulting horizon. For the computation of the quantum corrections we used several approximations. In this paper we take into account effects that were neglected in the previous one.... |
1704.07561 | Lijing Shao | Lijing Shao, Noah Sennett, Alessandra Buonanno, Michael Kramer,
Norbert Wex | Constraining nonperturbative strong-field effects in scalar-tensor
gravity by combining pulsar timing and laser-interferometer
gravitational-wave detectors | 19 pages, 11 figures; accepted by Physical Review X | Phys. Rev. X 7, 041025 (2017) | 10.1103/PhysRevX.7.041025 | LIGO-P1700073 | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Pulsar timing and gravitational-wave (GW) detectors are superb laboratories
to study gravity theories in the strong-field regime. Here we combine those
tools to test the mono-scalar-tensor theory of Damour and Esposito-Far{\`e}se
(DEF), which predicts nonperturbative scalarization phenomena for neutron stars
(NSs). F... | [
{
"created": "Tue, 25 Apr 2017 06:59:12 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Sep 2017 10:00:45 GMT",
"version": "v2"
}
] | 2017-11-03 | [
[
"Shao",
"Lijing",
""
],
[
"Sennett",
"Noah",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Kramer",
"Michael",
""
],
[
"Wex",
"Norbert",
""
]
] | Pulsar timing and gravitational-wave (GW) detectors are superb laboratories to study gravity theories in the strong-field regime. Here we combine those tools to test the mono-scalar-tensor theory of Damour and Esposito-Far{\`e}se (DEF), which predicts nonperturbative scalarization phenomena for neutron stars (NSs). Fir... |
2306.00963 | Tomi Koivisto | Tomi Koivisto | Cosmology in the Lorentz gauge theory | 24 pages | null | 10.1142/S0219887824500403 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This proceeding is an introduction to cosmological applications of the
Lorentz gauge theory. It provides the ingredients for a unique, though yet
tentative $\Lambda$CDM theory of cosmology. The emergence of spacetime is
described by the spontaneous symmetry breaking called here the khronogenesis.
Space is then associ... | [
{
"created": "Thu, 1 Jun 2023 17:55:28 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Oct 2023 12:36:04 GMT",
"version": "v2"
}
] | 2023-10-18 | [
[
"Koivisto",
"Tomi",
""
]
] | This proceeding is an introduction to cosmological applications of the Lorentz gauge theory. It provides the ingredients for a unique, though yet tentative $\Lambda$CDM theory of cosmology. The emergence of spacetime is described by the spontaneous symmetry breaking called here the khronogenesis. Space is then associat... |
gr-qc/9304022 | T. Padmanabhan | R.Nityananda, T.Padmanabhan | Scaling properties of the gravitational clustering in the nonlinear
regime | 14 pages 2 figures available on request, TeX, IUCAA-12/93 | Mon.Not.Roy.Astron.Soc. 271 (1994) 976 | 10.1093/mnras/271.4.976 | null | gr-qc | null | The growth of density perturbations in an expanding universe in the
non-linear regime is investigated. The underlying equations of motion are cast
in a suggestive form, and motivate a conjecture that the scaled pair velocity,
$h(a,x)\equiv -[v/(\dot{a}x)]$ depends on the expansion factor $a$ and comoving
coordinate $... | [
{
"created": "Fri, 16 Apr 1993 22:50:06 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Nityananda",
"R.",
""
],
[
"Padmanabhan",
"T.",
""
]
] | The growth of density perturbations in an expanding universe in the non-linear regime is investigated. The underlying equations of motion are cast in a suggestive form, and motivate a conjecture that the scaled pair velocity, $h(a,x)\equiv -[v/(\dot{a}x)]$ depends on the expansion factor $a$ and comoving coordinate $x$... |
gr-qc/0508041 | Yuan K. Ha | Yuan K. Ha | The Gravitational Energy of a Black Hole | null | General Relativity and Gravitation, Vol 35 (2003) 2045 -50 | null | null | gr-qc hep-th | null | An exact energy expression for a physical black hole is derived by
considering the escape of a photon from the black hole. The mass of the black
hole within its horizon is found to be twice its mass as observed at infinity.
This result is important in understanding gravitational waves in black hole
collisions.
| [
{
"created": "Wed, 10 Aug 2005 17:07:18 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ha",
"Yuan K.",
""
]
] | An exact energy expression for a physical black hole is derived by considering the escape of a photon from the black hole. The mass of the black hole within its horizon is found to be twice its mass as observed at infinity. This result is important in understanding gravitational waves in black hole collisions. |
1512.05894 | Enrico Barausse | Enrico Barausse, Thomas P. Sotiriou and Ian Vega | Slowly rotating black holes in Einstein-{\ae}ther theory | 21 pages, 10 figures. Typos corrected. Accepted for publication in
PRD | Phys. Rev. D 93, 044044 (2016) | 10.1103/PhysRevD.93.044044 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study slowly rotating, asymptotically flat black holes in Einstein-aether
theory and show that solutions that are free from naked finite area
singularities form a two-parameter family. These parameters can be thought of
as the mass and angular momentum of the black hole, while there are no
independent aether charg... | [
{
"created": "Fri, 18 Dec 2015 10:42:25 GMT",
"version": "v1"
},
{
"created": "Sat, 6 Feb 2016 23:27:34 GMT",
"version": "v2"
}
] | 2016-02-24 | [
[
"Barausse",
"Enrico",
""
],
[
"Sotiriou",
"Thomas P.",
""
],
[
"Vega",
"Ian",
""
]
] | We study slowly rotating, asymptotically flat black holes in Einstein-aether theory and show that solutions that are free from naked finite area singularities form a two-parameter family. These parameters can be thought of as the mass and angular momentum of the black hole, while there are no independent aether charges... |
0811.4711 | Mauro Sereno | M. Cerdonio, R. De Pietri, Ph. Jetzer, M. Sereno | Local dark matter searches with LISA | 8 pages, 1 figure; v2: minor changes to match the version in press on
Classical and Quantum Gravity (special issue for the 7th International LISA
Symposium proceedings) | Class.Quant.Grav.26:094022,2009 | 10.1088/0264-9381/26/9/094022 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The drag-free satellites of LISA will maintain the test masses in geodesic
motion over many years with residual accelerations at unprecedented small
levels and time delay interferometry (TDI) will keep track of their
differential positions at level of picometers. This may allow investigations of
fine details of the g... | [
{
"created": "Fri, 28 Nov 2008 13:22:38 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Jan 2009 18:12:17 GMT",
"version": "v2"
}
] | 2014-11-18 | [
[
"Cerdonio",
"M.",
""
],
[
"De Pietri",
"R.",
""
],
[
"Jetzer",
"Ph.",
""
],
[
"Sereno",
"M.",
""
]
] | The drag-free satellites of LISA will maintain the test masses in geodesic motion over many years with residual accelerations at unprecedented small levels and time delay interferometry (TDI) will keep track of their differential positions at level of picometers. This may allow investigations of fine details of the gra... |
gr-qc/0702063 | Carlos Augusto Romero Filho | F. Dahia, C. Romero, L. F. P. Silva and R. Tavakol | Warped product spaces and geodesic motion in the neighbourhood of
hypersurfaces | RevTex, 7 pages, 5 figures | J.Math.Phys.48:072501,2007 | 10.1063/1.2738750 | null | gr-qc hep-th | null | We study the classical geodesic motions of nonzero rest mass test particles
and photons in five-dimensional warped product spaces. We show that it is
possible to obtain a general picture of these motions, using the natural
decoupling that occurs in such spaces between the motions in the fifth
dimension and the motion... | [
{
"created": "Sat, 10 Feb 2007 14:38:36 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Dahia",
"F.",
""
],
[
"Romero",
"C.",
""
],
[
"Silva",
"L. F. P.",
""
],
[
"Tavakol",
"R.",
""
]
] | We study the classical geodesic motions of nonzero rest mass test particles and photons in five-dimensional warped product spaces. We show that it is possible to obtain a general picture of these motions, using the natural decoupling that occurs in such spaces between the motions in the fifth dimension and the motion i... |
2103.14816 | Yoshiaki Himemoto | Yoshiaki Himemoto, Atsushi Nishizawa, Atsushi Taruya | Impacts of overlapping gravitational-wave signals on the parameter
estimation: Toward the search for cosmological backgrounds | 13 pages, 9 figures, presentation and several figures improved,
updated to match version published in PRD | Phys. Rev. D 104, 044010 (2021) | 10.1103/PhysRevD.104.044010 | YITP-21-14 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Third-generation gravitational wave detectors, such as the Einstein Telescope
and Cosmic Explorer, will detect a bunch of gravitational-wave (GW) signals
originating from the coalescence of binary neutron star (BNS) and binary black
hole (BBH) systems out to the higher redshifts, $z\sim 5-10$. There is a
potential co... | [
{
"created": "Sat, 27 Mar 2021 06:00:21 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Aug 2021 17:18:02 GMT",
"version": "v2"
}
] | 2021-08-18 | [
[
"Himemoto",
"Yoshiaki",
""
],
[
"Nishizawa",
"Atsushi",
""
],
[
"Taruya",
"Atsushi",
""
]
] | Third-generation gravitational wave detectors, such as the Einstein Telescope and Cosmic Explorer, will detect a bunch of gravitational-wave (GW) signals originating from the coalescence of binary neutron star (BNS) and binary black hole (BBH) systems out to the higher redshifts, $z\sim 5-10$. There is a potential conc... |
1811.09547 | Alexander Vikman | Pavel Jirou\v{s}ek and Alexander Vikman | New Weyl-invariant vector-tensor theory for the cosmological constant | 9 pages+references, comments are welcome | JCAP04(2019)004 | 10.1088/1475-7516/2019/04/004 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a new Weyl-invariant and generally-covariant vector-tensor
theory with higher derivatives. This theory can be induced by extending the
mimetic construction to vector fields of conformal weight four. We demonstrate
that in gauge-invariant variables this novel theory reduces to the
Henneaux-Teitelboim desc... | [
{
"created": "Fri, 23 Nov 2018 16:34:19 GMT",
"version": "v1"
}
] | 2019-04-03 | [
[
"Jiroušek",
"Pavel",
""
],
[
"Vikman",
"Alexander",
""
]
] | We introduce a new Weyl-invariant and generally-covariant vector-tensor theory with higher derivatives. This theory can be induced by extending the mimetic construction to vector fields of conformal weight four. We demonstrate that in gauge-invariant variables this novel theory reduces to the Henneaux-Teitelboim descri... |
gr-qc/0509076 | Ingemar Bengtsson | Ingemar Bengtsson and Patrik Sandin | Anti-de Sitter space, squashed and stretched | 25 pages, 2 figures; oversight corrected | Class.Quant.Grav.23:971-986,2006 | 10.1088/0264-9381/23/3/022 | null | gr-qc hep-th | null | We study the Lorentzian analogues of the squashed 3-sphere, namely 2+1
dimensional anti-de Sitter space, squashed or stretched along fibres that are
either spacelike or timelike. The causal structure, and the property of being
an Einstein--Weyl space, depend critically on whether we squash or stretch. We
argue that s... | [
{
"created": "Tue, 20 Sep 2005 09:44:16 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Nov 2005 13:38:42 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Bengtsson",
"Ingemar",
""
],
[
"Sandin",
"Patrik",
""
]
] | We study the Lorentzian analogues of the squashed 3-sphere, namely 2+1 dimensional anti-de Sitter space, squashed or stretched along fibres that are either spacelike or timelike. The causal structure, and the property of being an Einstein--Weyl space, depend critically on whether we squash or stretch. We argue that squ... |
1509.00262 | Matthew Wright | Matthew Wright | Slowly rotating charged fluid balls in the presence of a cosmological
constant | 14 pages, 1 figure | Gen Relativ Gravit (2016) 48: 134 | 10.1007/s10714-016-2132-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine charged slowly rotating perfect fluids in the presence of a
cosmological constant. The asymptotic form of the vacuum solutions to the
linearised Einstein-Maxwell field equations is found and the possibility of
matching this vacuum to the slow rotating Garc\'ia metric is considered. We
show that, contrary t... | [
{
"created": "Tue, 1 Sep 2015 12:47:29 GMT",
"version": "v1"
}
] | 2016-09-13 | [
[
"Wright",
"Matthew",
""
]
] | We examine charged slowly rotating perfect fluids in the presence of a cosmological constant. The asymptotic form of the vacuum solutions to the linearised Einstein-Maxwell field equations is found and the possibility of matching this vacuum to the slow rotating Garc\'ia metric is considered. We show that, contrary to ... |
0712.4348 | Akihiro Ishibashi | Akihiro Ishibashi | Higher Dimensional Bondi Energy with a Globally Specified Background
Structure | 23 pages, no figures, references are added, minor corrections,
numerous minor revisions, to appear in Class. Quantum Grav | Class.Quant.Grav.25:165004,2008 | 10.1088/0264-9381/25/16/165004 | KEK-Cosmo-3, KEK/TH/1213 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A higher (even spacetime) dimensional generalization of the Bondi energy has
recently been proposed by gr-qc/0304054 within the framework of conformal
infinity and Hamiltonian formalizm. The gauge condition employed in
gr-qc/0304054 to derive the Bondi energy expression is, however, peculiar in
the sense that cross-s... | [
{
"created": "Fri, 28 Dec 2007 13:13:22 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Apr 2008 11:02:15 GMT",
"version": "v2"
},
{
"created": "Sun, 22 Jun 2008 22:34:40 GMT",
"version": "v3"
}
] | 2009-11-13 | [
[
"Ishibashi",
"Akihiro",
""
]
] | A higher (even spacetime) dimensional generalization of the Bondi energy has recently been proposed by gr-qc/0304054 within the framework of conformal infinity and Hamiltonian formalizm. The gauge condition employed in gr-qc/0304054 to derive the Bondi energy expression is, however, peculiar in the sense that cross-sec... |
1712.00271 | Matthew J. Lake Dr | Matthew J. Lake | Minimum length uncertainty relations in the presence of dark energy | 27 pages, 3 figures, 1 table, 1 appendix. Major revisions, invited
contribution to the Galaxies special issue "The dark side of the Universe",
T. Harko and F. Lobo eds. (v3). Published version,
https://doi.org/10.3390/galaxies7010011 | Galaxies 2019, 7(1), 11 | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a dark energy-modified minimum length uncertainty relation
(DE-MLUR) or dark energy uncertainty principle (DE-UP) for short. The new
relation is structurally similar to the MLUR introduced by K{\' a}rolyh{\' a}zy
(1968), and reproduced by Ng and van Dam (1994) using alternative arguments,
but with a numb... | [
{
"created": "Fri, 1 Dec 2017 10:58:18 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Aug 2018 04:25:19 GMT",
"version": "v2"
},
{
"created": "Sat, 12 Jan 2019 12:45:54 GMT",
"version": "v3"
}
] | 2019-01-15 | [
[
"Lake",
"Matthew J.",
""
]
] | We introduce a dark energy-modified minimum length uncertainty relation (DE-MLUR) or dark energy uncertainty principle (DE-UP) for short. The new relation is structurally similar to the MLUR introduced by K{\' a}rolyh{\' a}zy (1968), and reproduced by Ng and van Dam (1994) using alternative arguments, but with a number... |
2211.06415 | Puttarak Jai-Akson | Laurent Freidel, Puttarak Jai-akson | Carrollian hydrodynamics and symplectic structure on stretched horizons | 49 pages, 1 figure | null | null | RIKEN-iTHEMS-Report-22 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The membrane paradigm displays underlying connections between a timelike
stretched horizon and a null boundary (such as a black hole horizon) and
bridges the gravitational dynamics of the horizon with fluid dynamics. In this
work, we revisit the membrane viewpoint of a finite distance null boundary and
present a unif... | [
{
"created": "Fri, 11 Nov 2022 18:53:30 GMT",
"version": "v1"
}
] | 2022-11-14 | [
[
"Freidel",
"Laurent",
""
],
[
"Jai-akson",
"Puttarak",
""
]
] | The membrane paradigm displays underlying connections between a timelike stretched horizon and a null boundary (such as a black hole horizon) and bridges the gravitational dynamics of the horizon with fluid dynamics. In this work, we revisit the membrane viewpoint of a finite distance null boundary and present a unifie... |
gr-qc/9803031 | null | Thibault Damour, Gilles Esposito-Farese | Gravitational-wave versus binary-pulsar tests of strong-field gravity | 23 pages, REVTeX 3.0, uses epsf.tex to include 5 postscript figures
(2 paragraphs and a 5th figure added at the end of section IV + minor
changes) | Phys.Rev.D58:042001,1998 | 10.1103/PhysRevD.58.042001 | IHES/P/98/13, CPT-98/P.3626 | gr-qc astro-ph | null | Binary systems comprising at least one neutron star contain strong
gravitational field regions and thereby provide a testing ground for
strong-field gravity. Two types of data can be used to test the law of gravity
in compact binaries: binary pulsar observations, or forthcoming
gravitational-wave observations of insp... | [
{
"created": "Mon, 9 Mar 1998 14:47:18 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jun 1998 15:01:39 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Damour",
"Thibault",
""
],
[
"Esposito-Farese",
"Gilles",
""
]
] | Binary systems comprising at least one neutron star contain strong gravitational field regions and thereby provide a testing ground for strong-field gravity. Two types of data can be used to test the law of gravity in compact binaries: binary pulsar observations, or forthcoming gravitational-wave observations of inspir... |
1602.04901 | Shelley Liang Miss | Neil D. Barrie, Archil Kobakhidze, Shelley Liang | Natural Inflation with Hidden Scale Invariance | 8 pages, minor revision, to be published in PLB | null | 10.1016/j.physletb.2016.03.056 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new class of natural inflation models based on a hidden scale
invariance. In a very generic Wilsonian effective field theory with an
arbitrary number of scalar fields, which exhibits scale invariance via the
dilaton, the potential necessarily contains a flat direction in the classical
limit. This flat di... | [
{
"created": "Tue, 16 Feb 2016 03:49:39 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Feb 2016 01:40:16 GMT",
"version": "v2"
},
{
"created": "Fri, 25 Mar 2016 23:46:41 GMT",
"version": "v3"
}
] | 2016-04-20 | [
[
"Barrie",
"Neil D.",
""
],
[
"Kobakhidze",
"Archil",
""
],
[
"Liang",
"Shelley",
""
]
] | We propose a new class of natural inflation models based on a hidden scale invariance. In a very generic Wilsonian effective field theory with an arbitrary number of scalar fields, which exhibits scale invariance via the dilaton, the potential necessarily contains a flat direction in the classical limit. This flat dire... |
1007.2785 | Orfeu Bertolami | A. Alves, O. Bertolami | Unparticle inspired corrections to the Gravitational Quantum Well | Revtex4 file, 4 pages, 2 figures and 1 table. Version to match the
one published at Physical Review D | Phys.Rev.D82:047501,2010 | 10.1103/PhysRevD.82.047501 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider unparticle inspired corrections of the type
${(\frac{R_{G}}{r})}^\beta$ to the Newtonian potential in the context of the
gravitational quantum well. The new energy spectrum is computed and bounds on
the parameters of these corrections are obtained from the knowledge of the
energy eigenvalues of the gravit... | [
{
"created": "Fri, 16 Jul 2010 14:51:43 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Aug 2010 11:10:06 GMT",
"version": "v2"
},
{
"created": "Sat, 28 Aug 2010 19:21:01 GMT",
"version": "v3"
}
] | 2014-11-21 | [
[
"Alves",
"A.",
""
],
[
"Bertolami",
"O.",
""
]
] | We consider unparticle inspired corrections of the type ${(\frac{R_{G}}{r})}^\beta$ to the Newtonian potential in the context of the gravitational quantum well. The new energy spectrum is computed and bounds on the parameters of these corrections are obtained from the knowledge of the energy eigenvalues of the gravitat... |
0907.4404 | Rolando Gaitan Deveras RGD | Rolando Gaitan | Non-consistency of a pure Yang-Mills type formulation for gravity
revisited | 19 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A perturbative regime based on contorsion as a dynamical variable and metric
as a (classical) fixed background, is performed in the context of a pure
Yang-Mills formulation based on $GL(3,R)$ gauge group. In the massless case we
show that the theory propagates three degrees of freedom and only one is a
non-unitary mo... | [
{
"created": "Sat, 25 Jul 2009 05:30:13 GMT",
"version": "v1"
}
] | 2009-07-28 | [
[
"Gaitan",
"Rolando",
""
]
] | A perturbative regime based on contorsion as a dynamical variable and metric as a (classical) fixed background, is performed in the context of a pure Yang-Mills formulation based on $GL(3,R)$ gauge group. In the massless case we show that the theory propagates three degrees of freedom and only one is a non-unitary mode... |
0707.0106 | Sante Carloni | S. Carloni, P. K. S. Dunsby, A. Troisi | The evolution of density perturbations in f(R) gravity | 21 pages, 2 figures, typos corrected, submitted to PRD | Phys.Rev.D77:024024,2008 | 10.1103/PhysRevD.77.024024 | null | gr-qc astro-ph hep-th | null | We give a rigorous and mathematically well defined presentation of the
Covariant and Gauge Invariant theory of scalar perturbations of a
Friedmann-Lemaitre-Robertson-Walker universe for Fourth Order Gravity, where
the matter is described by a perfect fluid with a barotropic equation of state.
The general perturbation... | [
{
"created": "Sun, 1 Jul 2007 14:42:56 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Jul 2007 10:10:10 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Carloni",
"S.",
""
],
[
"Dunsby",
"P. K. S.",
""
],
[
"Troisi",
"A.",
""
]
] | We give a rigorous and mathematically well defined presentation of the Covariant and Gauge Invariant theory of scalar perturbations of a Friedmann-Lemaitre-Robertson-Walker universe for Fourth Order Gravity, where the matter is described by a perfect fluid with a barotropic equation of state. The general perturbations ... |
gr-qc/0203049 | Ernesto F. Eiroa | Ernesto F. Eiroa, Gustavo E. Romero, Diego F. Torres | Reissner-Nordstrom black hole lensing | 16 pages, 5 figures | Phys.Rev.D66:024010,2002 | 10.1103/PhysRevD.66.024010 | null | gr-qc | null | In this paper we study the strong gravitational lensing scenario where the
lens is a Reissner-Nordstrom black hole. We obtain the basic equations and show
that, as in the case of Schwarzschild black hole, besides the primary and
secondary images, two infinite sets of relativistic images are formed. We find
analytical... | [
{
"created": "Wed, 13 Mar 2002 19:26:51 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Apr 2002 18:48:45 GMT",
"version": "v2"
},
{
"created": "Fri, 14 Feb 2003 21:56:40 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Eiroa",
"Ernesto F.",
""
],
[
"Romero",
"Gustavo E.",
""
],
[
"Torres",
"Diego F.",
""
]
] | In this paper we study the strong gravitational lensing scenario where the lens is a Reissner-Nordstrom black hole. We obtain the basic equations and show that, as in the case of Schwarzschild black hole, besides the primary and secondary images, two infinite sets of relativistic images are formed. We find analytical e... |
2403.17037 | Lakhan V. Jaybhaye | Lakhan V. Jaybhaye, Moreshwar Tayde, P.K. Sahoo | Wormhole solutions under the effect of dark matter in $f(R,L_m)$ gravity | Communications in Theoretical Physics published version | Communications in Theoretical Physics 76 (5) (2024) 055402 | 10.1088/1572-9494/ad3746 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In the background of $f(R, L_m)$ gravity, this work investigates three
distinct dark matter halo profiles to test the possibility of generalised
wormhole geometry within the galactic halo regions. The current study aims to
accomplish these goals by examining various dark matter profiles including
Universal Rotation C... | [
{
"created": "Mon, 25 Mar 2024 07:23:09 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Apr 2024 09:47:43 GMT",
"version": "v2"
}
] | 2024-04-18 | [
[
"Jaybhaye",
"Lakhan V.",
""
],
[
"Tayde",
"Moreshwar",
""
],
[
"Sahoo",
"P. K.",
""
]
] | In the background of $f(R, L_m)$ gravity, this work investigates three distinct dark matter halo profiles to test the possibility of generalised wormhole geometry within the galactic halo regions. The current study aims to accomplish these goals by examining various dark matter profiles including Universal Rotation Cur... |
1511.04559 | Vasilis Oikonomou | S.D. Odintsov, V.K. Oikonomou | Accelerating Cosmology and Phase Structure of F(R) Gravity with Lagrange
Multiplier Constraint: Mimetic Approach | Revised version, PRD accepted | null | 10.1103/PhysRevD.93.023517 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study mimetic $F(R)$ gravity with potential and Lagrange multiplier
constraint. In the context of these theories, we introduce a reconstruction
technique which enables us to realize arbitrary cosmologies, given the Hubble
rate and an arbitrarily chosen $F(R)$ gravity. We exemplify our method by
realizing cosmologi... | [
{
"created": "Sat, 14 Nov 2015 13:20:27 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Dec 2015 13:12:03 GMT",
"version": "v2"
}
] | 2016-02-17 | [
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | We study mimetic $F(R)$ gravity with potential and Lagrange multiplier constraint. In the context of these theories, we introduce a reconstruction technique which enables us to realize arbitrary cosmologies, given the Hubble rate and an arbitrarily chosen $F(R)$ gravity. We exemplify our method by realizing cosmologies... |
gr-qc/0106074 | Sami Mohammad | M. Sami | Inflation With Oscillations | 7 pages, 3 figures | Grav. Cosmol.8:309-312,2003 | null | null | gr-qc | null | In this paper we investigate the general features of "Oscillatory Inflation".
In adiabatic approximation, we derive a general formula for the number of
e-foldings $\tilde{N}$ which reduces to the standard expression in case of the
slow role approximation and leads to the Damour-Mukhanov type expression for
the slowly... | [
{
"created": "Sat, 23 Jun 2001 14:27:18 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Sami",
"M.",
""
]
] | In this paper we investigate the general features of "Oscillatory Inflation". In adiabatic approximation, we derive a general formula for the number of e-foldings $\tilde{N}$ which reduces to the standard expression in case of the slow role approximation and leads to the Damour-Mukhanov type expression for the slowly v... |
1712.07927 | Phongpichit Channuie | Phongpichit Channuie (Walailak U.) and Davood Momeni (Sultan Qaboos
U.) | Noether symmetry in a nonlocal f(T) Gravity | v2: 12 pages, 4 figures, texts modified and references added, version
accepted by Nuclear Physics B | Nucl.Phys. B935 (2018) 256-270 | 10.1016/j.nuclphysb.2018.08.016 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that the Noether symmetry approach proves to be very useful
not only to fix physically viable cosmological models but also to reduce
dynamics and achieve exact solutions. In this work, We examine a formal
framework of nonlocal $f(T)$ theory of gravity through the Noether symmetry
approach. The Noethe... | [
{
"created": "Thu, 21 Dec 2017 13:15:45 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Aug 2018 13:55:12 GMT",
"version": "v2"
}
] | 2018-09-05 | [
[
"Channuie",
"Phongpichit",
"",
"Walailak U."
],
[
"Momeni",
"Davood",
"",
"Sultan Qaboos\n U."
]
] | It is well known that the Noether symmetry approach proves to be very useful not only to fix physically viable cosmological models but also to reduce dynamics and achieve exact solutions. In this work, We examine a formal framework of nonlocal $f(T)$ theory of gravity through the Noether symmetry approach. The Noether ... |
2311.10938 | Taotao Sui | Yi Zhong and Tao-Tao Sui | Localization of q-form fields on a de Sitter brane in chameleon gravity | 14 pages, 8 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Recently, it was found that the vector field can be naturally localized on
the thick brane in chameleon gravity. In this work, we extend this study to
encompass de Sitter brane scenario. We focus on the localization of q-form
fields. The scalar and vector fields can be localized on the de Sitter brane,
while the KR f... | [
{
"created": "Sat, 18 Nov 2023 02:14:23 GMT",
"version": "v1"
}
] | 2023-11-21 | [
[
"Zhong",
"Yi",
""
],
[
"Sui",
"Tao-Tao",
""
]
] | Recently, it was found that the vector field can be naturally localized on the thick brane in chameleon gravity. In this work, we extend this study to encompass de Sitter brane scenario. We focus on the localization of q-form fields. The scalar and vector fields can be localized on the de Sitter brane, while the KR fie... |
gr-qc/0610026 | Simone Mercuri | Simone Mercuri | Nieh-Yan Invariant and Fermions in Ashtekar-Barbero-Immirzi Formalism | 3 pages, proceedings of the XI Marcel Grossmann meeting on
Relativistic Astrophysics, July 23-29, 2006, Berlin, final version | null | null | null | gr-qc | null | In order to introduce an interaction between gravity and fermions in the
Ashtekar-Barbero-Immirzi formalism without affecting classical dynamics a
non-minimal term is necessary. The non-minimal term together with the Holst
modification to the Hilbert-Palatini action reconstruct the Nieh-Yan invariant.
As a consequenc... | [
{
"created": "Fri, 6 Oct 2006 15:53:34 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Oct 2006 16:09:32 GMT",
"version": "v2"
},
{
"created": "Fri, 9 Mar 2007 13:22:47 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Mercuri",
"Simone",
""
]
] | In order to introduce an interaction between gravity and fermions in the Ashtekar-Barbero-Immirzi formalism without affecting classical dynamics a non-minimal term is necessary. The non-minimal term together with the Holst modification to the Hilbert-Palatini action reconstruct the Nieh-Yan invariant. As a consequence ... |
gr-qc/0410032 | Papantonopoulos Eleftherios | E. Papantonopoulos | Braneworld Cosmological Models | Talk given at Pascos04/Nath Fest, Boston, August 16-22, 2004, 11
pages, no figures | null | null | null | gr-qc astro-ph hep-th | null | The main cosmological models on the brane are presented. A generic equation
is given, from which the Friedmann equations of the Randall-Sundrum, induced
gravity, Gauss-Bonnet and the combined induced gravity and Gauss-Bonnet
cosmological models are obtained. We discuss the modifications they bring to
the standard cos... | [
{
"created": "Thu, 7 Oct 2004 11:24:41 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Papantonopoulos",
"E.",
""
]
] | The main cosmological models on the brane are presented. A generic equation is given, from which the Friedmann equations of the Randall-Sundrum, induced gravity, Gauss-Bonnet and the combined induced gravity and Gauss-Bonnet cosmological models are obtained. We discuss the modifications they bring to the standard cosmo... |
0807.3309 | Ari Peltola | Ari Peltola | Local Approach to Hawking Radiation | 10 pages, references added, discussion slightly expanded at the end
of the article. To appear in CQG | Class.Quant.Grav.26:035014,2009 | 10.1088/0264-9381/26/3/035014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an approach to the Hawking effect which is free of the asymptotic
behavior of the metric or matter fields, and which is not confined to one
specific metric configuration. As a result, we find that for a wide class of
spacetime horizons there exists an emission of particles out of the horizon. As
expected,... | [
{
"created": "Mon, 21 Jul 2008 16:42:57 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Dec 2008 19:40:55 GMT",
"version": "v2"
}
] | 2009-01-27 | [
[
"Peltola",
"Ari",
""
]
] | We consider an approach to the Hawking effect which is free of the asymptotic behavior of the metric or matter fields, and which is not confined to one specific metric configuration. As a result, we find that for a wide class of spacetime horizons there exists an emission of particles out of the horizon. As expected, t... |
0812.2791 | James E. Lidsey | James E. Lidsey | Thermodynamics of Anomaly-Driven Cosmology | 8 pages, no figures | Class.Quant.Grav.26:147001,2009 | 10.1088/0264-9381/26/14/147001 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Friedmann equations of general relativity can be derived from the first
law of thermodynamics when the entropy of the apparent horizon of a spatially
isotropic universe is given by the Bekenstein-Hawking entropy. We point out
that if the entropy of the apparent horizon receives a logarithmic correction,
the first... | [
{
"created": "Mon, 15 Dec 2008 13:01:42 GMT",
"version": "v1"
}
] | 2009-11-19 | [
[
"Lidsey",
"James E.",
""
]
] | The Friedmann equations of general relativity can be derived from the first law of thermodynamics when the entropy of the apparent horizon of a spatially isotropic universe is given by the Bekenstein-Hawking entropy. We point out that if the entropy of the apparent horizon receives a logarithmic correction, the first l... |
gr-qc/0005073 | Benjamin Lange | Benjamin Lange | DC Cancellation As a Method of Generating a t^2 Response and of Solving
the Radial Nonobservability Problem in a Concentric Free-Falling Two-Sphere
Equivalence-Principle Experiment in a Drag-Free Satellite | 40 pages, 7 figures, Revision 3.0: Reviewer's suggested corrections
for journal submission | Class.Quant.Grav.27:175004,2010 | 10.1088/0264-9381/27/17/175004 | null | gr-qc | null | This paper solves two major problems which have blocked a free-fall
Equivalence-Principle (EP) in a satellite for 25 years: a semimajor-axis error
between the two proof masses cannot be distinguished from an EP violation and
the response to an EP violation only grows as t not t^2. Using the cancellation
method descri... | [
{
"created": "Tue, 16 May 2000 22:16:35 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Jun 2000 00:32:46 GMT",
"version": "v2"
},
{
"created": "Sat, 17 Mar 2001 18:23:03 GMT",
"version": "v3"
}
] | 2014-11-17 | [
[
"Lange",
"Benjamin",
""
]
] | This paper solves two major problems which have blocked a free-fall Equivalence-Principle (EP) in a satellite for 25 years: a semimajor-axis error between the two proof masses cannot be distinguished from an EP violation and the response to an EP violation only grows as t not t^2. Using the cancellation method describe... |
1907.01394 | Mustapha Azreg-A\"inou | Mustapha Azreg-A\"inou, Mubasher Jamil (Corresponding Author) and Kai
Lin | Gyroscope precession frequency analysis of a five dimensional charged
rotating Kaluza-Klein black hole | 14 pages, 4 figures, to be published in Chinese Physics C | Chinese Physics C Vol. 44, No. 6 (2020) 065101 | 10.1088/1674-1137/44/6/065101 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the spin precession frequency of a test gyroscope
attached to a stationary observer in the five dimensional rotating Kaluza-Klein
black hole (RKKBH). We derive the conditions under which the test gyroscope
moves along a timelike trajectory in this geometry and the regions where the
spin preces... | [
{
"created": "Mon, 1 Jul 2019 07:59:31 GMT",
"version": "v1"
},
{
"created": "Sun, 9 Feb 2020 09:13:51 GMT",
"version": "v2"
}
] | 2020-03-19 | [
[
"Azreg-Aïnou",
"Mustapha",
"",
"Corresponding Author"
],
[
"Jamil",
"Mubasher",
"",
"Corresponding Author"
],
[
"Lin",
"Kai",
""
]
] | In this paper, we study the spin precession frequency of a test gyroscope attached to a stationary observer in the five dimensional rotating Kaluza-Klein black hole (RKKBH). We derive the conditions under which the test gyroscope moves along a timelike trajectory in this geometry and the regions where the spin precessi... |
2209.03378 | Pablo Morales | Pablo A. Morales, Patrick Copinger | Curvature-induced pseudogauge fields from time-dependent geometries in
graphene | 13 pages, 1 figure; version accepted for publication in Physical
Review B | Phys. Rev. B 107, 075432 (2023) | 10.1103/PhysRevB.107.075432 | null | gr-qc cond-mat.mes-hall | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The massless Dirac equation is studied in curved spacetime on the
(2+1)-dimensional graphene sheet in time-dependent geometries. Emergent
pseudogauge fields are found both in the adiabatic regime and, for
high-frequency periodic geometries, in the nonadiabatic regime for a generic
Friedmann-Lema\^itre-Robertson-Walke... | [
{
"created": "Wed, 7 Sep 2022 18:00:06 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Feb 2023 13:09:32 GMT",
"version": "v2"
}
] | 2023-02-24 | [
[
"Morales",
"Pablo A.",
""
],
[
"Copinger",
"Patrick",
""
]
] | The massless Dirac equation is studied in curved spacetime on the (2+1)-dimensional graphene sheet in time-dependent geometries. Emergent pseudogauge fields are found both in the adiabatic regime and, for high-frequency periodic geometries, in the nonadiabatic regime for a generic Friedmann-Lema\^itre-Robertson-Walker ... |
1701.04122 | Charles Wang | Teodora Oniga, Charles H.-T. Wang | Quantum coherence, radiance, and resistance of gravitational systems | 17 pages, 3 figures, proofread version to be published by Physical
Review D | Phys. Rev. D 96, 084014 (2017) | 10.1103/PhysRevD.96.084014 | null | gr-qc astro-ph.CO quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a general framework for the open dynamics of an ensemble of
quantum particles subject to spacetime fluctuations about the flat background.
An arbitrary number of interacting bosonic and fermionic particles are
considered. A systematic approach to the generation of gravitational waves in
the quantum domain ... | [
{
"created": "Sun, 15 Jan 2017 22:23:03 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Apr 2017 13:46:55 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Sep 2017 12:55:39 GMT",
"version": "v3"
},
{
"created": "Wed, 27 Sep 2017 13:21:31 GMT",
"version": "v4"
}
] | 2017-10-06 | [
[
"Oniga",
"Teodora",
""
],
[
"Wang",
"Charles H. -T.",
""
]
] | We develop a general framework for the open dynamics of an ensemble of quantum particles subject to spacetime fluctuations about the flat background. An arbitrary number of interacting bosonic and fermionic particles are considered. A systematic approach to the generation of gravitational waves in the quantum domain is... |
1007.4789 | Mark Hannam | Mark Hannam, Sascha Husa, Frank Ohme, Doreen Mueller, Bernd Bruegmann | Simulations of black-hole binaries with unequal masses or non-precessing
spins: accuracy, physical properties, and comparison with post-Newtonian
results | 21 pages, 9 figures, 6 tables. Version accepted by PRD | Phys.Rev.D82:124008,2010 | 10.1103/PhysRevD.82.124008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present gravitational waveforms for the last orbits and merger of
black-hole-binary (BBH) systems along two branches of the BBH parameter space:
equal-mass binaries with equal non-precessing spins, and nonspinning
unequal-mass binaries. The waveforms are calculated from numerical solutions of
Einstein's equations ... | [
{
"created": "Tue, 27 Jul 2010 18:44:50 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Nov 2010 14:31:42 GMT",
"version": "v2"
}
] | 2010-12-24 | [
[
"Hannam",
"Mark",
""
],
[
"Husa",
"Sascha",
""
],
[
"Ohme",
"Frank",
""
],
[
"Mueller",
"Doreen",
""
],
[
"Bruegmann",
"Bernd",
""
]
] | We present gravitational waveforms for the last orbits and merger of black-hole-binary (BBH) systems along two branches of the BBH parameter space: equal-mass binaries with equal non-precessing spins, and nonspinning unequal-mass binaries. The waveforms are calculated from numerical solutions of Einstein's equations fo... |
1311.3024 | Surajit Chattopadhyay | Surajit Chattopadhyay | A Study on Ricci Dark Energy in Bulk-Brane Interaction | arXiv admin note: text overlap with arXiv:hep-th/0609104,
arXiv:0908.1214, arXiv:hep-th/0511301 by other authors | ISRN High Energy Physics, vol. 2013, Article ID 895614, 2013 | 10.1155/2013/895614 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we have investigated the effects of the interaction between a
brane universe and the bulk in which it is embedded. Considering the effects of
the interaction between a brane universe and the bulk we have obtained the
equation of state for the interacting holographic Ricci dark energy density
$\rho_{\Lamb... | [
{
"created": "Wed, 13 Nov 2013 06:31:54 GMT",
"version": "v1"
}
] | 2013-11-14 | [
[
"Chattopadhyay",
"Surajit",
""
]
] | In this work we have investigated the effects of the interaction between a brane universe and the bulk in which it is embedded. Considering the effects of the interaction between a brane universe and the bulk we have obtained the equation of state for the interacting holographic Ricci dark energy density $\rho_{\Lambda... |
2303.14127 | Kimet Jusufi | Kimet Jusufi, Ahmad Sheykhi, Salvatore Capozziello | Apparent dark matter as a non-local manifestation of emergent gravity | Accepted for publication in Physics of the Dark Universe | Physics of the Dark Universe 42 (2023) 101270 | 10.1016/j.dark.2023.101270 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We disclose a close correspondence between Verlinde's Emergent Gravity (VEG)
theory and the non-local gravity theories. Such non-local effects can play
crucial role at small distances as well as in large scale structures. In
particular, we argue that the emergent gravity effectively is a manifestation
of the entangle... | [
{
"created": "Thu, 23 Mar 2023 17:00:41 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Jun 2023 06:58:31 GMT",
"version": "v2"
}
] | 2023-06-30 | [
[
"Jusufi",
"Kimet",
""
],
[
"Sheykhi",
"Ahmad",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | We disclose a close correspondence between Verlinde's Emergent Gravity (VEG) theory and the non-local gravity theories. Such non-local effects can play crucial role at small distances as well as in large scale structures. In particular, we argue that the emergent gravity effectively is a manifestation of the entangleme... |
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