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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0811.1600 | Andrea Nerozzi Dr | Andrea Nerozzi, Oliver Elbracht | Using curvature invariants for wave extraction in numerical relativity | 7 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new expression for the Weyl scalar Psi_4 that can be used in
numerical relativity to extract the gravitational wave content of a spacetime.
The formula relies upon the identification of transverse tetrads, namely the
ones in which Psi_1=Psi_3=0. It is well known that tetrads with this property
always exi... | [
{
"created": "Mon, 10 Nov 2008 22:47:33 GMT",
"version": "v1"
}
] | 2008-11-12 | [
[
"Nerozzi",
"Andrea",
""
],
[
"Elbracht",
"Oliver",
""
]
] | We present a new expression for the Weyl scalar Psi_4 that can be used in numerical relativity to extract the gravitational wave content of a spacetime. The formula relies upon the identification of transverse tetrads, namely the ones in which Psi_1=Psi_3=0. It is well known that tetrads with this property always exist... |
1410.0114 | Ebrahim Yusofi Ramneti | E. Yusofi, M. Mohsenzadeh and M.R. Tanhayi | Inflation in Non-de Sitter Background with Coherent States | typos corrected, refs revised, few comments added, no figure, to
appear in Communications in Theoretical Physics (Vol. 65, No. 3, pp.
308--314, 2016) | Communications in Theoretical Physics, Vol. 65, No. 3, pp.
308--314, 2016 | 10.1088/0253-6102/65/3/308 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the excited coherent states built over the initial non-de Sitter
modes, to study the modification of spectra of primordial scalar fluctuation.
Non-de Sitter modes are actually the asymptotic solution of the inflaton field
equation[JHEP 09(2014) 020]. We build excited coherent states over the non-de
Sitter mode... | [
{
"created": "Wed, 1 Oct 2014 06:02:45 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Oct 2014 15:55:49 GMT",
"version": "v2"
},
{
"created": "Tue, 15 Mar 2016 06:34:34 GMT",
"version": "v3"
}
] | 2018-04-06 | [
[
"Yusofi",
"E.",
""
],
[
"Mohsenzadeh",
"M.",
""
],
[
"Tanhayi",
"M. R.",
""
]
] | We use the excited coherent states built over the initial non-de Sitter modes, to study the modification of spectra of primordial scalar fluctuation. Non-de Sitter modes are actually the asymptotic solution of the inflaton field equation[JHEP 09(2014) 020]. We build excited coherent states over the non-de Sitter modes ... |
2109.07603 | Casey McGrath | Casey McGrath | Gravitational Wave Timing Residual Models for Pulsar Timing Experiments | PhD dissertation. 241 pages, 37 figures. Published by ProQuest
(Dissertations & Theses) | null | null | null | gr-qc astro-ph.CO astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Pulsar timing experiments are currently searching for gravitational waves,
and this dissertation focuses on the development and study of the pulsar timing
residual models used for continuous wave searches. The first goal of this work
is to re-present much of the fundamental physics and mathematics concepts
behind the... | [
{
"created": "Wed, 15 Sep 2021 22:33:17 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Jan 2023 20:18:37 GMT",
"version": "v2"
}
] | 2023-01-09 | [
[
"McGrath",
"Casey",
""
]
] | Pulsar timing experiments are currently searching for gravitational waves, and this dissertation focuses on the development and study of the pulsar timing residual models used for continuous wave searches. The first goal of this work is to re-present much of the fundamental physics and mathematics concepts behind the c... |
1401.3596 | Amare Abebe | Amare Abebe | Anti-Newtonian cosmologies in f(R) gravity | 14 pages, no figures, published version | Class. Quantum Grav. 31 (2014) 115011 | 10.1088/0264-9381/31/11/115011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate a class of perfect-fluid "anti-Newtonian"
cosmological models in the context of f(R) gravity. In particular, we study the
integrability conditions of such gravity models using covariant consistency
analysis formalisms. We show that, unlike the results in General Relativity,
anti-Newtonia... | [
{
"created": "Wed, 15 Jan 2014 14:10:16 GMT",
"version": "v1"
},
{
"created": "Sun, 19 Jan 2014 14:14:13 GMT",
"version": "v2"
},
{
"created": "Tue, 20 May 2014 15:21:24 GMT",
"version": "v3"
}
] | 2015-06-18 | [
[
"Abebe",
"Amare",
""
]
] | In this paper, we investigate a class of perfect-fluid "anti-Newtonian" cosmological models in the context of f(R) gravity. In particular, we study the integrability conditions of such gravity models using covariant consistency analysis formalisms. We show that, unlike the results in General Relativity, anti-Newtonian ... |
1310.1513 | Adam Pound | Adam Pound, Cesar Merlin, and Leor Barack | Gravitational self-force from radiation-gauge metric perturbations | 46 pages, 1 figure, 1 table. Minor corrections. Final version to be
published in Phys. Rev. D | Phys. Rev. D 89, 024009 (2014) | 10.1103/PhysRevD.89.024009 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Calculations of the gravitational self-force (GSF) in curved spacetime
require as input the metric perturbation in a sufficiently regular gauge. A
basic challenge in the program to compute the GSF for orbits around a Kerr
black hole is that the standard procedure for reconstructing the perturbation
is formulated in a... | [
{
"created": "Sat, 5 Oct 2013 20:05:37 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Dec 2013 00:32:04 GMT",
"version": "v2"
}
] | 2014-01-21 | [
[
"Pound",
"Adam",
""
],
[
"Merlin",
"Cesar",
""
],
[
"Barack",
"Leor",
""
]
] | Calculations of the gravitational self-force (GSF) in curved spacetime require as input the metric perturbation in a sufficiently regular gauge. A basic challenge in the program to compute the GSF for orbits around a Kerr black hole is that the standard procedure for reconstructing the perturbation is formulated in a c... |
2112.12523 | Chao Niu | Wei Xiong, Peng Liu, Cheng-Yong Zhang and Chao Niu | Quasi-normal modes of the Einstein-Maxwell-aether Black Hole | 25 pages. v2: Minor corrections and references added | null | 10.1103/PhysRevD.106.064057 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the quasi-normal modes of the charged scalar perturbations in the
background of the Einstein-Maxwell-aether black hole through three methods (WKB
method, continued fraction method, generalized eigenvalue method). Then we
propose the specific treatment for the generalized effective potential with
$\omega$-dep... | [
{
"created": "Thu, 23 Dec 2021 13:23:22 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Feb 2022 05:54:12 GMT",
"version": "v2"
}
] | 2022-10-12 | [
[
"Xiong",
"Wei",
""
],
[
"Liu",
"Peng",
""
],
[
"Zhang",
"Cheng-Yong",
""
],
[
"Niu",
"Chao",
""
]
] | We study the quasi-normal modes of the charged scalar perturbations in the background of the Einstein-Maxwell-aether black hole through three methods (WKB method, continued fraction method, generalized eigenvalue method). Then we propose the specific treatment for the generalized effective potential with $\omega$-depen... |
1810.04616 | Cosimo Stornaiolo | Cosimo Stornaiolo | Tomographic analysis of the De Sitter model in quantum and classical
cosmology | Submitted to International Journal of Geometric Methods in Modern
Physics (IJGMMP) | null | 10.1142/S0219887819500129 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The importance of the tomographic approach is that either in quantum
mechanics as in classical mechanics the state of a physical system is expressed
with the same family of functions, the tomograms. The extension of this
procedure to quantum cosmology is straightforward. But instead of using the
tomographic represent... | [
{
"created": "Wed, 10 Oct 2018 16:19:57 GMT",
"version": "v1"
}
] | 2019-01-30 | [
[
"Stornaiolo",
"Cosimo",
""
]
] | The importance of the tomographic approach is that either in quantum mechanics as in classical mechanics the state of a physical system is expressed with the same family of functions, the tomograms. The extension of this procedure to quantum cosmology is straightforward. But instead of using the tomographic representat... |
1603.08459 | Flavio Mercati | Flavio Mercati | On the fate of Birkhoff's theorem in Shape Dynamics | 13 pages, 6 figures | null | 10.1007/s10714-016-2134-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spherically symmetric, asymptotically flat solutions of Shape Dynamics were
previously studied assuming standard falloff conditions for the metric and the
momenta. These ensure that the spacetime is asymptotically Minkowski, and that
the falloff conditions are Poincar\'e-invariant. These requirements however are
not ... | [
{
"created": "Mon, 28 Mar 2016 17:48:01 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Sep 2016 20:14:36 GMT",
"version": "v2"
}
] | 2016-09-21 | [
[
"Mercati",
"Flavio",
""
]
] | Spherically symmetric, asymptotically flat solutions of Shape Dynamics were previously studied assuming standard falloff conditions for the metric and the momenta. These ensure that the spacetime is asymptotically Minkowski, and that the falloff conditions are Poincar\'e-invariant. These requirements however are not le... |
2205.11499 | Justin Janquart | Justin Janquart, Anupreeta More, Chris Van Den Broeck | Ordering the confusion: A study of the impact of lens models on
gravitational-wave lensing detection capabilities | 21 pages, 10 figures | null | 10.1093/mnras/stac3660 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | When traveling from their source to the observer, gravitational waves can get
deflected by massive objects along their travel path. When the lens is massive
enough and the source aligns closely with the line-of-sight to the lens, the
wave undergoes strong lensing, leading to several images with the same
frequency evo... | [
{
"created": "Mon, 23 May 2022 17:54:43 GMT",
"version": "v1"
}
] | 2022-12-28 | [
[
"Janquart",
"Justin",
""
],
[
"More",
"Anupreeta",
""
],
[
"Broeck",
"Chris Van Den",
""
]
] | When traveling from their source to the observer, gravitational waves can get deflected by massive objects along their travel path. When the lens is massive enough and the source aligns closely with the line-of-sight to the lens, the wave undergoes strong lensing, leading to several images with the same frequency evolu... |
gr-qc/0206004 | G. S. Asanov | D.G. Pavlov | Hypercomplex Numbers, Associated Metric Spaces, and Extension of
Relativistic Hyperboloid | null | null | null | null | gr-qc | null | We undertake to develop a successful framework for commutative-associative
hypercomplex numbers with the view to explicate and study associated geometric
and generalized-relativistic concepts, basing on an interesting possibility to
introduce appropriate multilinear metric forms in the treatment. The scalar
polyprodu... | [
{
"created": "Mon, 3 Jun 2002 12:34:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pavlov",
"D. G.",
""
]
] | We undertake to develop a successful framework for commutative-associative hypercomplex numbers with the view to explicate and study associated geometric and generalized-relativistic concepts, basing on an interesting possibility to introduce appropriate multilinear metric forms in the treatment. The scalar polyproduct... |
1903.08563 | Martin Zofka | Martin Zofka | Bonnor-Melvin universe with a cosmological constant | 3 pages | Phys. Rev. D 99, 044058 (2019) | 10.1103/PhysRevD.99.044058 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize the well-known Bonnor-Melvin solution of the Einstein-Maxwell
equations to the case of a non-vanishing cosmological constant. The spacetime
is again cylindrically symmetric and static but, unlike the original solution,
it truly represents a homogeneous magnetic field.
| [
{
"created": "Wed, 20 Mar 2019 15:41:49 GMT",
"version": "v1"
}
] | 2019-03-21 | [
[
"Zofka",
"Martin",
""
]
] | We generalize the well-known Bonnor-Melvin solution of the Einstein-Maxwell equations to the case of a non-vanishing cosmological constant. The spacetime is again cylindrically symmetric and static but, unlike the original solution, it truly represents a homogeneous magnetic field. |
2406.10751 | Bowen Zhao | Bowen Zhao, Lars Andersson and Shing-Tung Yau | Strong field behavior of Wang-Yau Quasi-local energy | null | null | null | null | gr-qc math-ph math.DG math.MP | http://creativecommons.org/publicdomain/zero/1.0/ | We look at the strong field behavior of the Wang-Yau quasi-local energy. In
particular, we examine the limit of the Wang-Yau quasi-local energy as the
defining spacelike 2-surface {\Sigma} approaches an apparent horizon from
outside. Assuming any smooth isometric embedding, we find that the Wang-Yau
quasi-local energ... | [
{
"created": "Sat, 15 Jun 2024 22:19:49 GMT",
"version": "v1"
}
] | 2024-07-16 | [
[
"Zhao",
"Bowen",
""
],
[
"Andersson",
"Lars",
""
],
[
"Yau",
"Shing-Tung",
""
]
] | We look at the strong field behavior of the Wang-Yau quasi-local energy. In particular, we examine the limit of the Wang-Yau quasi-local energy as the defining spacelike 2-surface {\Sigma} approaches an apparent horizon from outside. Assuming any smooth isometric embedding, we find that the Wang-Yau quasi-local energy ... |
1706.04521 | Ahmet Baykal | Ahmet Baykal, Tekin Dereli | Impulsive gravitational waves in general massive 3D gravity | Published version | Phys. Rev. D 96, 084028 (2017) | 10.1103/PhysRevD.96.084028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Impulsive, non-diverging, Petrov-Segre type N gravitational wave solutions to
a general massive three-dimensional gravity in the de Sitter, anti-de Sitter
and flat Minkowski backgrounds are constructed in a unified manner by using the
exterior algebra of differential forms.
| [
{
"created": "Wed, 14 Jun 2017 14:48:14 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Aug 2017 12:26:10 GMT",
"version": "v2"
},
{
"created": "Sat, 14 Oct 2017 18:53:48 GMT",
"version": "v3"
}
] | 2017-10-17 | [
[
"Baykal",
"Ahmet",
""
],
[
"Dereli",
"Tekin",
""
]
] | Impulsive, non-diverging, Petrov-Segre type N gravitational wave solutions to a general massive three-dimensional gravity in the de Sitter, anti-de Sitter and flat Minkowski backgrounds are constructed in a unified manner by using the exterior algebra of differential forms. |
1306.4739 | Marcus Khuri | Sergio Dain, Marcus Khuri, Gilbert Weinstein, Sumio Yamada | Lower Bounds for the Area of Black Holes in Terms of Mass, Charge, and
Angular Momentum | 12 pages; section 2 revised; to appear in Phys. Rev. D | Phys. Rev. D 88, 024048 (2013) [7 pages] | 10.1103/PhysRevD.88.024048 | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The most general formulation of Penrose's inequality yields a lower bound for
ADM mass in terms of the area, charge, and angular momentum of black holes.
This inequality is in turn equivalent to an upper and lower bound for the area
in terms of the remaining quantities. In this note, we establish the lower
bound for ... | [
{
"created": "Thu, 20 Jun 2013 02:46:59 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Jul 2013 04:22:58 GMT",
"version": "v2"
}
] | 2013-07-31 | [
[
"Dain",
"Sergio",
""
],
[
"Khuri",
"Marcus",
""
],
[
"Weinstein",
"Gilbert",
""
],
[
"Yamada",
"Sumio",
""
]
] | The most general formulation of Penrose's inequality yields a lower bound for ADM mass in terms of the area, charge, and angular momentum of black holes. This inequality is in turn equivalent to an upper and lower bound for the area in terms of the remaining quantities. In this note, we establish the lower bound for a ... |
1910.01598 | Ulrich Sperhake | U.Sperhake, R.Rosca-Mead, D.Gerosa, E.Berti | Amplification of superkicks in black-hole binaries through orbital
eccentricity | 9 pages, 4 figures, to match published version in Phys.Rev.D | Phys. Rev. D 101, 024044 (2020) | 10.1103/PhysRevD.101.024044 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present new numerical-relativity simulations of eccentric merging black
holes with initially antiparallel spins lying in the orbital plane (the
so-called \emph{superkick} configuration). Binary eccentricity boosts the
recoil of the merger remnant by up to $25\%$. The increase in the energy flux
is much more modest... | [
{
"created": "Thu, 3 Oct 2019 16:59:26 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Jan 2020 13:41:34 GMT",
"version": "v2"
}
] | 2020-01-29 | [
[
"Sperhake",
"U.",
""
],
[
"Rosca-Mead",
"R.",
""
],
[
"Gerosa",
"D.",
""
],
[
"Berti",
"E.",
""
]
] | We present new numerical-relativity simulations of eccentric merging black holes with initially antiparallel spins lying in the orbital plane (the so-called \emph{superkick} configuration). Binary eccentricity boosts the recoil of the merger remnant by up to $25\%$. The increase in the energy flux is much more modest, ... |
1301.2981 | Anirban Saha Dr. | Sunandan Gangopadhyay, Anirban Saha, Swarup Saha | Trace of phase-space noncommutativity in the response of a free particle
to linearized gravitational waves | 9 pages, Latex, Published version, discussions and references added | Mod.Phys.Lett. A28 (2013) 35, 1350161 | 10.1142/S0217732313501617 | null | gr-qc hep-ph hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Interaction of linearized gravitational waves with a otherwise free particle
has been studied quantum mechanically in a noncommutative phase-space to
examine whether the particle's response to the gravitational wave gets modified
due to spatial and/or momentum noncommutativity. The result shows that momentum
noncommu... | [
{
"created": "Mon, 14 Jan 2013 14:08:52 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Jan 2014 06:09:03 GMT",
"version": "v2"
}
] | 2014-01-28 | [
[
"Gangopadhyay",
"Sunandan",
""
],
[
"Saha",
"Anirban",
""
],
[
"Saha",
"Swarup",
""
]
] | Interaction of linearized gravitational waves with a otherwise free particle has been studied quantum mechanically in a noncommutative phase-space to examine whether the particle's response to the gravitational wave gets modified due to spatial and/or momentum noncommutativity. The result shows that momentum noncommuta... |
2210.16366 | Alejandra Gonzalez | Alejandra Gonzalez, Francesco Zappa, Matteo Breschi, Sebastiano
Bernuzzi, David Radice, Ananya Adhikari, Alessandro Camilletti, Swami
Vivekanandji Chaurasia, Georgios Doulis, Surendra Padamata, Alireza Rashti,
Maximiliano Ujevic, Bernd Br\"ugmann, William Cook, Tim Dietrich, Albino
Perego, Amit Poudel, Wolfgang... | Second release of the CoRe database of binary neutron star merger
waveforms | 33 pages, 14 figures | Class. Quantum Grav. 40 085011 (2023) | 10.1088/1361-6382/acc231 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We present the second data release of gravitational waveforms from binary
neutron star merger simulations performed by the Computational Relativity
(CoRe) collaboration. The current database consists of 254 different binary
neutron star configurations and a total of 590 individual numerical-relativity
simulations usi... | [
{
"created": "Fri, 28 Oct 2022 19:01:58 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Mar 2023 12:40:25 GMT",
"version": "v2"
}
] | 2023-03-29 | [
[
"Gonzalez",
"Alejandra",
""
],
[
"Zappa",
"Francesco",
""
],
[
"Breschi",
"Matteo",
""
],
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Radice",
"David",
""
],
[
"Adhikari",
"Ananya",
""
],
[
"Camilletti",
"Alessandro",... | We present the second data release of gravitational waveforms from binary neutron star merger simulations performed by the Computational Relativity (CoRe) collaboration. The current database consists of 254 different binary neutron star configurations and a total of 590 individual numerical-relativity simulations using... |
1801.05830 | Marc Casals | Marc Casals and Peter Zimmerman | Perturbations of Extremal Kerr Spacetime: Analytic Framework and
Late-time Tails | 34 pages, 1 figure; in v3: version matching the published version | Phys. Rev. D 100, 124027 (2019) | 10.1103/PhysRevD.100.124027 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a complete and systematic analytical approach to field
perturbations of extremal Kerr spacetime based on the formalism of Mano, Suzuki
and Takasugi (MST) for the Teukolsky equation. Analytical expressions for the
radial solutions and frequency-domain Green function in terms of infinite
series of special fu... | [
{
"created": "Wed, 17 Jan 2018 19:14:48 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Oct 2019 14:49:19 GMT",
"version": "v2"
},
{
"created": "Fri, 28 Feb 2020 17:19:17 GMT",
"version": "v3"
}
] | 2020-03-02 | [
[
"Casals",
"Marc",
""
],
[
"Zimmerman",
"Peter",
""
]
] | We develop a complete and systematic analytical approach to field perturbations of extremal Kerr spacetime based on the formalism of Mano, Suzuki and Takasugi (MST) for the Teukolsky equation. Analytical expressions for the radial solutions and frequency-domain Green function in terms of infinite series of special func... |
1401.4329 | Silvije Domazet | Silvije Domazet and Tomislav Prokopec | A photon propagator on de Sitter in covariant gauges | 15 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a de Sitter invariant photon propagator in general covariant
gauges. Our result is a natural generalization of the Allen-Jacobson photon
propagator in Feynman gauge. Our propagator reproduces the correct response to
a point static charge and the one-loop electromagnetic stress-energy tensor,
strongly sug... | [
{
"created": "Fri, 17 Jan 2014 12:58:45 GMT",
"version": "v1"
}
] | 2014-01-20 | [
[
"Domazet",
"Silvije",
""
],
[
"Prokopec",
"Tomislav",
""
]
] | We construct a de Sitter invariant photon propagator in general covariant gauges. Our result is a natural generalization of the Allen-Jacobson photon propagator in Feynman gauge. Our propagator reproduces the correct response to a point static charge and the one-loop electromagnetic stress-energy tensor, strongly sugge... |
gr-qc/0003090 | Remo Garattini | Remo Garattini | A Spacetime Foam approach to the cosmological constant and entropy | Uses RevTeX, 24 pages, Appendix deleted and some corrections
inserted. Final results unchanged | Int.J.Mod.Phys.D4:635,2002 | 10.1142/S0218271802001445 | null | gr-qc hep-th | null | A simple model of spacetime foam, made by $N$ wormholes in a semiclassical
approximation, is taken under examination. The Casimir-like energy of the
quantum fluctuation of such a model and its probability of being realized are
computed. Implications on the Bekenstein-Hawking entropy and the cosmological
constant are ... | [
{
"created": "Wed, 22 Mar 2000 19:19:10 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Jun 2002 13:31:21 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Garattini",
"Remo",
""
]
] | A simple model of spacetime foam, made by $N$ wormholes in a semiclassical approximation, is taken under examination. The Casimir-like energy of the quantum fluctuation of such a model and its probability of being realized are computed. Implications on the Bekenstein-Hawking entropy and the cosmological constant are co... |
1011.5709 | Hassan Amirhashchi | Hassan Amirhashchi | L.R.S. Bianchi type II Stiff Fluid cosmological model with Decaying
Vacuum Energy Density $\Lambda$ in general relativity | null | Phys.Lett.B697:429-433,2011 | 10.1016/j.physletb.2011.02.046 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Locally rotationally symmetric (L.R.S.) Bianchi type II stiff fluid
cosmological model is investigated. To get the deterministic model of the
universe, we have assumed a condition $A=B^{m}$ between metric potentials
$A,~B$ where $n$ is the constant. It is shown that the vacuum energy density
$\Lambda$ is positive and... | [
{
"created": "Fri, 26 Nov 2010 06:05:34 GMT",
"version": "v1"
}
] | 2011-05-26 | [
[
"Amirhashchi",
"Hassan",
""
]
] | Locally rotationally symmetric (L.R.S.) Bianchi type II stiff fluid cosmological model is investigated. To get the deterministic model of the universe, we have assumed a condition $A=B^{m}$ between metric potentials $A,~B$ where $n$ is the constant. It is shown that the vacuum energy density $\Lambda$ is positive and p... |
1506.08668 | Jonathan R. Gair | Jonathan R. Gair, Joseph D. Romano and Stephen R. Taylor | Mapping gravitational-wave backgrounds in modified theories of gravity
using pulsar timing arrays | 35 pages, 8 figures, submitted to Phys. Rev. D | Phys. Rev. D 92, 102003 (2015) | 10.1103/PhysRevD.92.102003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend our previous work on applying CMB techniques to the mapping of
gravitational-wave backgrounds to backgrounds which have non-GR polarisations.
Our analysis and results are presented in the context of pulsar-timing array
observations, but the overarching methods are general, and can be easily
applied to LIGO ... | [
{
"created": "Mon, 29 Jun 2015 15:01:00 GMT",
"version": "v1"
}
] | 2015-12-02 | [
[
"Gair",
"Jonathan R.",
""
],
[
"Romano",
"Joseph D.",
""
],
[
"Taylor",
"Stephen R.",
""
]
] | We extend our previous work on applying CMB techniques to the mapping of gravitational-wave backgrounds to backgrounds which have non-GR polarisations. Our analysis and results are presented in the context of pulsar-timing array observations, but the overarching methods are general, and can be easily applied to LIGO or... |
2004.14988 | Daniela Pugliese Dr | D. Pugliese and G. Montani | Constraining LQG Graph with Light Surfaces: Properties of BH
Thermodynamics for Mini-Super-Space, Semi-Classical Polymeric BH | 34 pages; 16 figure multipanels; 2 tables | Entropy 2020, 22(4), 402; | 10.3390/e22040402 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work discusses observational evidences of quantum effects on geometry in
a black hole (BH) astrophysical context. We study properties of a family of
loop quantum corrected regular BH solutions and their horizons, focusing on the
geometry symmetries. We explore a recent model where the geometry is determined
by a... | [
{
"created": "Thu, 30 Apr 2020 17:33:13 GMT",
"version": "v1"
}
] | 2020-05-01 | [
[
"Pugliese",
"D.",
""
],
[
"Montani",
"G.",
""
]
] | This work discusses observational evidences of quantum effects on geometry in a black hole (BH) astrophysical context. We study properties of a family of loop quantum corrected regular BH solutions and their horizons, focusing on the geometry symmetries. We explore a recent model where the geometry is determined by a m... |
2204.02429 | Aaron Held | Astrid Eichhorn, Aaron Held, Philipp-Vincent Johannsen | Universal signatures of singularity-resolving physics in photon rings of
black holes and horizonless objects | 26 pages + appendix; 12 figures | null | 10.1088/1475-7516/2023/01/043 | Imperial/TP/2022/AH/01 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within quantum-gravity approaches and beyond, different mechanisms for
singularity resolution in black holes exist. Under a set of assumptions that we
spell out in detail, these mechanisms leave their imprint in shadow images of
spherically symmetric black holes. We find that even current EHT accuracy is
sufficient t... | [
{
"created": "Tue, 5 Apr 2022 18:10:49 GMT",
"version": "v1"
}
] | 2023-02-01 | [
[
"Eichhorn",
"Astrid",
""
],
[
"Held",
"Aaron",
""
],
[
"Johannsen",
"Philipp-Vincent",
""
]
] | Within quantum-gravity approaches and beyond, different mechanisms for singularity resolution in black holes exist. Under a set of assumptions that we spell out in detail, these mechanisms leave their imprint in shadow images of spherically symmetric black holes. We find that even current EHT accuracy is sufficient to ... |
gr-qc/0112028 | Sergiu Vacaru | Sergiu Vacaru and Panayiotis Stavrinos | Spinors and Space-Time Anisotropy | Version 3 with new references, 301 pages, latex2e | Athens University Press, Athens, Greece, 2002 | null | null | gr-qc hep-th math-ph math.DG math.MP | null | This is the first monograph on the geometry of anisotropic spinor spaces and
its applications in modern physics. The main subjects are the theory of gravity
and matter fields in spaces provided with off--diagonal metrics and associated
anholonomic frames and nonlinear connection structures, the algebra and
geometry o... | [
{
"created": "Wed, 12 Dec 2001 21:08:58 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Dec 2001 13:33:57 GMT",
"version": "v2"
},
{
"created": "Tue, 28 May 2002 20:57:17 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Vacaru",
"Sergiu",
""
],
[
"Stavrinos",
"Panayiotis",
""
]
] | This is the first monograph on the geometry of anisotropic spinor spaces and its applications in modern physics. The main subjects are the theory of gravity and matter fields in spaces provided with off--diagonal metrics and associated anholonomic frames and nonlinear connection structures, the algebra and geometry of ... |
2403.10377 | Waleska de Medeiros Ma. | Waleska P. F. de Medeiros, Matheus J. Lazo, Daniel M\"uller and
Dinalva A. Sales | Tilt in quadratic gravity | null | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | In this work, non perfect fluid, tilted source solutions in both
Einstein-Hilbert General Relativity (GR) and Quadratic Gravity (QG) for the
anisotropic Bianchi V model are addressed. Since the excellent CMBR match of
Starobinsky's inflation with Planck's team measurements data, QG has acquired a
prominent status in ... | [
{
"created": "Fri, 15 Mar 2024 15:07:18 GMT",
"version": "v1"
}
] | 2024-03-18 | [
[
"de Medeiros",
"Waleska P. F.",
""
],
[
"Lazo",
"Matheus J.",
""
],
[
"Müller",
"Daniel",
""
],
[
"Sales",
"Dinalva A.",
""
]
] | In this work, non perfect fluid, tilted source solutions in both Einstein-Hilbert General Relativity (GR) and Quadratic Gravity (QG) for the anisotropic Bianchi V model are addressed. Since the excellent CMBR match of Starobinsky's inflation with Planck's team measurements data, QG has acquired a prominent status in th... |
gr-qc/0009041 | Antonio Bernal Navarro | A. N. Bernal, M. P. Lopez, M. Sanchez (Dpto. Geometria y Topologia,
Granada, Spain) | Fundamental units of length and time | Part of the results of this article has been announced at the meeting
``XXIV International Workshop on the Fundamental Problems of High Energy
Physics and Field Theory'' 27-29 June 2001, Protvino, Russia | Found.Phys.32:77-108,2002 | 10.1023/A:1013800914617 | null | gr-qc | null | Ideal rods and clocks are defined as an infinitesimal symmetry of the
spacetime. Since no a priori geometric structure is considered, all the
possible models of spacetime are obtained.
| [
{
"created": "Wed, 13 Sep 2000 01:57:14 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Sep 2000 22:59:42 GMT",
"version": "v2"
},
{
"created": "Mon, 7 Oct 2002 23:31:21 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Bernal",
"A. N.",
"",
"Dpto. Geometria y Topologia,\n Granada, Spain"
],
[
"Lopez",
"M. P.",
"",
"Dpto. Geometria y Topologia,\n Granada, Spain"
],
[
"Sanchez",
"M.",
"",
"Dpto. Geometria y Topologia,\n Granada, Spain"
]
] | Ideal rods and clocks are defined as an infinitesimal symmetry of the spacetime. Since no a priori geometric structure is considered, all the possible models of spacetime are obtained. |
2303.17296 | Jo\~ao Lu\'is Rosa | Jo\~ao Lu\'is Rosa, Caio F. B. Macedo, Diego Rubiera-Garcia | Imaging compact boson stars with hot-spots and thin accretion disks | 17 pages, 16 figures | Phys. Rev. D 108, 044021 (2023) | 10.1103/PhysRevD.108.044021 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we consider the observational properties of compact boson stars
with self-interactions orbited by isotropically emitting (hot-spot) sources and
optically thin accretion disks. We consider two families of boson stars
supported by quartic and sixth-order self-interaction potentials, and choose
three sample... | [
{
"created": "Thu, 30 Mar 2023 11:16:15 GMT",
"version": "v1"
}
] | 2023-08-22 | [
[
"Rosa",
"João Luís",
""
],
[
"Macedo",
"Caio F. B.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
]
] | In this work we consider the observational properties of compact boson stars with self-interactions orbited by isotropically emitting (hot-spot) sources and optically thin accretion disks. We consider two families of boson stars supported by quartic and sixth-order self-interaction potentials, and choose three samples ... |
2306.00540 | David Trestini | David Trestini | Gravitational waves in scalar-tensor theory to one-and-a-half
post-Newtonian order | Contribution to the 2022 Gravitation session of the 56th Rencontres
de Moriond. 4 pages | null | 10.58027/1e1n-7973 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We compute the gravitational waves generated by compact binary systems in a
class of massless scalar-tensor (ST) theories to the 1.5 post-Newtonian (1.5PN)
order beyond the standard quadrupole radiation in general relativity (GR).
Using and adapting to ST theories the multipolar-post-Minkowskian and
post-Newtonian fo... | [
{
"created": "Thu, 1 Jun 2023 10:50:21 GMT",
"version": "v1"
}
] | 2023-06-02 | [
[
"Trestini",
"David",
""
]
] | We compute the gravitational waves generated by compact binary systems in a class of massless scalar-tensor (ST) theories to the 1.5 post-Newtonian (1.5PN) order beyond the standard quadrupole radiation in general relativity (GR). Using and adapting to ST theories the multipolar-post-Minkowskian and post-Newtonian form... |
2111.04548 | Ernesto F. Eiroa | Javier Bad\'ia, Ernesto F. Eiroa | Shadow of black holes with a plasma environment in 4D
Einstein-Gauss-Bonnet gravity | 9 pages, 2 figures; prepared for the Proceedings of the Sixteenth
Marcel Grossmann Meeting - MG16 | Proceedings of the Sixteenth Marcel Grossmann Meeting (MG16),
pages 3856-3864 (World Scientific, Singapore, 2023) | 10.1142/9789811269776_0320 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the shadow cast by rotating black holes surrounded by plasma in the
context of the 4D Einstein-Gauss-Bonnet theory of gravity. The metric for these
black holes results from applying the Newman-Janis algorithm to a spherically
symmetric solution. We obtain the contour of the shadow for a plasma frequency
mode... | [
{
"created": "Mon, 8 Nov 2021 14:57:35 GMT",
"version": "v1"
}
] | 2023-01-30 | [
[
"Badía",
"Javier",
""
],
[
"Eiroa",
"Ernesto F.",
""
]
] | We study the shadow cast by rotating black holes surrounded by plasma in the context of the 4D Einstein-Gauss-Bonnet theory of gravity. The metric for these black holes results from applying the Newman-Janis algorithm to a spherically symmetric solution. We obtain the contour of the shadow for a plasma frequency model ... |
1712.04444 | Yongwan Gim | Yongwan Gim, Hwajin Um, Wontae Kim | Black hole complementarity with the generalized uncertainty principle in
gravity's rainbow | 18 pages, 3 figures, version to appear in JCAP | JCAP, 02 (2018) 060 | 10.1088/1475-7516/2018/02/060 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | When gravitation is combined with quantum theory, the Heisenberg uncertainty
principle could be extended to the generalized uncertainty principle
accompanying a minimal length. To see how the generalized uncertainty principle
works in the context of black hole complementarity, we calculate the required
energy to dupl... | [
{
"created": "Tue, 12 Dec 2017 05:42:36 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Mar 2018 02:17:16 GMT",
"version": "v2"
}
] | 2018-03-05 | [
[
"Gim",
"Yongwan",
""
],
[
"Um",
"Hwajin",
""
],
[
"Kim",
"Wontae",
""
]
] | When gravitation is combined with quantum theory, the Heisenberg uncertainty principle could be extended to the generalized uncertainty principle accompanying a minimal length. To see how the generalized uncertainty principle works in the context of black hole complementarity, we calculate the required energy to duplic... |
1010.1258 | Antonino Marciano | Marco Valerio Battisti and Antonino Marciano | Big Bounce in Dipole Cosmology | 5 pages | Phys.Rev.D82:124060,2010 | 10.1103/PhysRevD.82.124060 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the cosmological Big Bounce scenario from the dipole approximation
of Loop Quantum Gravity. We show that a non-singular evolution takes place for
any matter field and that, by considering a massless scalar field as a
relational clock for the dynamics, the semi-classical proprieties of an initial
state are p... | [
{
"created": "Wed, 6 Oct 2010 20:06:04 GMT",
"version": "v1"
}
] | 2011-01-24 | [
[
"Battisti",
"Marco Valerio",
""
],
[
"Marciano",
"Antonino",
""
]
] | We derive the cosmological Big Bounce scenario from the dipole approximation of Loop Quantum Gravity. We show that a non-singular evolution takes place for any matter field and that, by considering a massless scalar field as a relational clock for the dynamics, the semi-classical proprieties of an initial state are pre... |
1105.4727 | Luis Herrera | L. Herrera, A. Di Prisco and J. Iba\~nez | Tilted Lemaitre-Tolman-Bondi Spacetimes: Hydrodynamic and Thermodynamic
Properties | 11 pages Revtex. Some changes in the text, references updated.
Published in Phys. Rev. D | Phys. Rev. D 84, 064036 (2011) | 10.1103/PhysRevD.84.064036 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Lemaitre-Tolman-Bondi spacetimes from the point of view of a
tilted observer, i.e. one with respect to which the fluid is radially moving.
The imperfect fluid and the congruence described by its four-velocity, as seen
by the tilted observer is studied in detail. It is shown that from the point of
view of ... | [
{
"created": "Tue, 24 May 2011 10:32:38 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jun 2011 08:19:56 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Sep 2011 08:36:14 GMT",
"version": "v3"
}
] | 2015-05-28 | [
[
"Herrera",
"L.",
""
],
[
"Di Prisco",
"A.",
""
],
[
"Ibañez",
"J.",
""
]
] | We consider Lemaitre-Tolman-Bondi spacetimes from the point of view of a tilted observer, i.e. one with respect to which the fluid is radially moving. The imperfect fluid and the congruence described by its four-velocity, as seen by the tilted observer is studied in detail. It is shown that from the point of view of su... |
gr-qc/0202089 | David Langlois | Philippe Mounaix, David Langlois | Cosmological Equations for a Thick Brane | 23 pages, Latex, 2 figures | Phys.Rev. D65 (2002) 103523 | 10.1103/PhysRevD.65.103523 | null | gr-qc astro-ph hep-ph hep-th | null | Generalized Friedmann equations governing the cosmological evolution inside a
thick brane embedded in a five-dimensional Anti-de Sitter spacetime are
derived. These equations are written in terms of four-dimensional effective
brane quantities obtained by integrating, along the fifth dimension, over the
brane thicknes... | [
{
"created": "Mon, 25 Feb 2002 15:08:35 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Mounaix",
"Philippe",
""
],
[
"Langlois",
"David",
""
]
] | Generalized Friedmann equations governing the cosmological evolution inside a thick brane embedded in a five-dimensional Anti-de Sitter spacetime are derived. These equations are written in terms of four-dimensional effective brane quantities obtained by integrating, along the fifth dimension, over the brane thickness.... |
1705.06984 | Daniela Doneva | Stoytcho S. Yazadjiev, Daniela D. Doneva, Kostas D. Kokkotas | Oscillation modes of rapidly rotating neutron stars in scalar-tensor
theories of gravity | 9 pages, 2 figures | Phys. Rev. D 96, 064002 (2017) | 10.1103/PhysRevD.96.064002 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform the first study of the oscillation frequencies of rapidly rotating
neutron stars in alternative theories of gravity, focusing mainly on the
fundamental $f$-modes. We concentrated on a particular class of alternative
theories - the (massive) scalar-tensor theories. The generalization to rapid
rotation is im... | [
{
"created": "Fri, 19 May 2017 13:39:34 GMT",
"version": "v1"
}
] | 2017-09-13 | [
[
"Yazadjiev",
"Stoytcho S.",
""
],
[
"Doneva",
"Daniela D.",
""
],
[
"Kokkotas",
"Kostas D.",
""
]
] | We perform the first study of the oscillation frequencies of rapidly rotating neutron stars in alternative theories of gravity, focusing mainly on the fundamental $f$-modes. We concentrated on a particular class of alternative theories - the (massive) scalar-tensor theories. The generalization to rapid rotation is impo... |
1911.06374 | Gustavo Gutierrez-Cano | Alberto A. Garcia-Diaz and Gustavo Gutierrez-Cano | Regularity conditions for spherically symmetric solutions of
Einstein-nonlinear electrodynamics equations; revised and improved version | 43 pages, version-2: Sections and references added | Annals of Physics 2020 | 10.1016/j.aop.2020.168323 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this report, the regularity conditions at the center for static
spherically symmetric (SSS) solutions of the Einstein equations coupled to
nonlinear electrodynamics (NLE) with Lagrangian $\mathcal{L}=
\mathcal{L}(\mathcal{F})$, depending on the electromagnetic invariant
$\mathcal{F}=F_{\mu\nu}\,F^{\mu\nu}/4$, are ... | [
{
"created": "Thu, 14 Nov 2019 20:33:49 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Jun 2020 18:48:35 GMT",
"version": "v2"
}
] | 2020-11-05 | [
[
"Garcia-Diaz",
"Alberto A.",
""
],
[
"Gutierrez-Cano",
"Gustavo",
""
]
] | In this report, the regularity conditions at the center for static spherically symmetric (SSS) solutions of the Einstein equations coupled to nonlinear electrodynamics (NLE) with Lagrangian $\mathcal{L}= \mathcal{L}(\mathcal{F})$, depending on the electromagnetic invariant $\mathcal{F}=F_{\mu\nu}\,F^{\mu\nu}/4$, are es... |
1707.02611 | Joao Rafael Lucio Dos Santos | J. R. L. Santos, P. H. R. S. Moraes, D. A. Ferreira, D. C. Vilar Neta | Building analytical three-field cosmological models | 11 pages, and 3 figures, updated version published in EPJC | The European Physical Journal C, 2018 | 10.1140/epjc/s10052-018-5614-6 | null | gr-qc math.CA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A difficult task to deal with is the analytical treatment of models composed
by three real scalar fields, once their equations of motion are in general
coupled and hard to be integrated. In order to overcome this problem we
introduce a methodology to construct three-field models based on the so-called
"extension meth... | [
{
"created": "Sun, 9 Jul 2017 18:08:13 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Feb 2018 02:20:29 GMT",
"version": "v2"
}
] | 2018-02-28 | [
[
"Santos",
"J. R. L.",
""
],
[
"Moraes",
"P. H. R. S.",
""
],
[
"Ferreira",
"D. A.",
""
],
[
"Neta",
"D. C. Vilar",
""
]
] | A difficult task to deal with is the analytical treatment of models composed by three real scalar fields, once their equations of motion are in general coupled and hard to be integrated. In order to overcome this problem we introduce a methodology to construct three-field models based on the so-called "extension method... |
1901.09173 | Andronikos Paliathanasis | John D. Barrow and Andronikos Paliathanasis | Cyclic Szekeres Universes | 10 pages, 7 figures, accepted for publication in EPJC | Eur. Phys. J. C (2019) 79: 379 | 10.1140/epjc/s10052-019-6890-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Szekeres universe with an inhomogeneous dust fluid and a
homogeneous and isotropic ghost matter source with equation of state
$p_{g}=\left( \gamma-1\right) \rho_{g},$ where $\gamma$ is a constant. The
field equations determine two families of spacetimes which describe homogeneous
Kantowski-Sachs unive... | [
{
"created": "Sat, 26 Jan 2019 08:10:29 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Apr 2019 13:39:04 GMT",
"version": "v2"
}
] | 2020-01-17 | [
[
"Barrow",
"John D.",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | We consider the Szekeres universe with an inhomogeneous dust fluid and a homogeneous and isotropic ghost matter source with equation of state $p_{g}=\left( \gamma-1\right) \rho_{g},$ where $\gamma$ is a constant. The field equations determine two families of spacetimes which describe homogeneous Kantowski-Sachs univers... |
1104.3723 | Ritabrata Biswas | Ritabrata Biswas, Subenoy Chakraborty | A Study of Phase Transition in Black Hole Thermodynamics | 16 figures | Astrophys.Space Sci.332:171,2011 | 10.1007/s10509-010-0488-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper deals with five-dimensional black hole solutions in (a)
Einstein-Maxwell-Gauss-Bonnet theory with a cosmological constant and
(b)Einstein-Yang-Mills-Gauss-Bonnet theory for spherically symmetric space
time. In both the cases the possibility of phase transition is examined and it
is analyzed whether the pha... | [
{
"created": "Tue, 19 Apr 2011 12:16:31 GMT",
"version": "v1"
}
] | 2011-05-23 | [
[
"Biswas",
"Ritabrata",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | This paper deals with five-dimensional black hole solutions in (a) Einstein-Maxwell-Gauss-Bonnet theory with a cosmological constant and (b)Einstein-Yang-Mills-Gauss-Bonnet theory for spherically symmetric space time. In both the cases the possibility of phase transition is examined and it is analyzed whether the phase... |
1603.09655 | Bayram Tekin | Metin Gurses, Tahsin Cagri Sisman, Bayram Tekin | From Smooth Curves to Universal Metrics | 10 pages, 1 figure. Discussions extended | Phys. Rev. D 94, 044042 (2016) | 10.1103/PhysRevD.94.044042 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A special class of metrics, called universal metrics, solve all gravity
theories defined by covariant field equations purely based on the metric
tensor. Since we currently lack the knowledge of what the full of
quantum-corrected field equations of gravity are at a given microscopic length
scale, these metrics are par... | [
{
"created": "Thu, 31 Mar 2016 16:04:02 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Aug 2016 15:50:13 GMT",
"version": "v2"
}
] | 2016-08-24 | [
[
"Gurses",
"Metin",
""
],
[
"Sisman",
"Tahsin Cagri",
""
],
[
"Tekin",
"Bayram",
""
]
] | A special class of metrics, called universal metrics, solve all gravity theories defined by covariant field equations purely based on the metric tensor. Since we currently lack the knowledge of what the full of quantum-corrected field equations of gravity are at a given microscopic length scale, these metrics are parti... |
gr-qc/9903063 | Elisa Di Pietro | Elisa Di Pietro, Jacques Demaret | Scale-factor duality in string Bianchi cosmologies | 18 pages, no figures | Int.J.Mod.Phys. D8 (1999) 349-361 | 10.1142/S0218271899000262 | null | gr-qc | null | We apply the scale factor duality transformations introduced in the context
of the effective string theory to the anisotropic Bianchi-type models. We find
dual models for all the Bianchi-types [except for types $VIII$ and $IX$] and
construct for each of them its explicit form starting from the exact original
solution... | [
{
"created": "Wed, 17 Mar 1999 10:01:10 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jul 1999 09:11:36 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Di Pietro",
"Elisa",
""
],
[
"Demaret",
"Jacques",
""
]
] | We apply the scale factor duality transformations introduced in the context of the effective string theory to the anisotropic Bianchi-type models. We find dual models for all the Bianchi-types [except for types $VIII$ and $IX$] and construct for each of them its explicit form starting from the exact original solution o... |
1611.00430 | Sergio Ulhoa | S.C. Ulhoa, R.G.G. Amorim, Abra\~ao J. S. Capistrano | On Quasinormal Modes for Scalar Perturbations of Static Spherically
Symmetric Black Holes in Nash Embedding Framework | null | Advances in High Energy Physics Volume 2017 (2017), Article ID
9891231 | 10.1155/2017/9891231 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we investigate scalar perturbations of black holes embedded in
a five dimensional bulk space. It is calculated the quasinormal frequencies of
a such black holes using the third order of Wentzel, Kramers, Brillouin (WKB)
approximation for scalar perturbations. The results are presented in tables
along th... | [
{
"created": "Wed, 2 Nov 2016 00:30:29 GMT",
"version": "v1"
}
] | 2017-11-30 | [
[
"Ulhoa",
"S. C.",
""
],
[
"Amorim",
"R. G. G.",
""
],
[
"Capistrano",
"Abraão J. S.",
""
]
] | In this paper we investigate scalar perturbations of black holes embedded in a five dimensional bulk space. It is calculated the quasinormal frequencies of a such black holes using the third order of Wentzel, Kramers, Brillouin (WKB) approximation for scalar perturbations. The results are presented in tables along the ... |
1403.8116 | Surajit Chattopadhyay | Surajit Chattopadhyay | QCD ghost reconstruction of f(T) gravity in flat FRW universe | 13 pages, 8 figures, Accepted for publication in European Physical
Journal Plus | Eur. Phys. J. Plus (2014) 129: 82 | 10.1140/epjp/i2014-14082-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present work reports a reconstruction scheme for f(T) gravity based on
QCD ghost dark energy. Two models of f(T) have been generated and the pressure
and density contributions due to torsion have been reconstructed. Two realistic
models have been obtained and the effective equations of state have been
studied. Al... | [
{
"created": "Fri, 28 Mar 2014 04:30:35 GMT",
"version": "v1"
}
] | 2014-05-14 | [
[
"Chattopadhyay",
"Surajit",
""
]
] | The present work reports a reconstruction scheme for f(T) gravity based on QCD ghost dark energy. Two models of f(T) have been generated and the pressure and density contributions due to torsion have been reconstructed. Two realistic models have been obtained and the effective equations of state have been studied. Also... |
1501.00974 | Gamal G.L. Nashed | G.G.L. Nashed | Schwarzschild solution in extended teleparallel gravity | 8 pages Latex | EPL Vol. 105 (2014), 10001 | 10.1209/0295-5075/105/10001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Tetrad field, with two unknown functions of radial coordinate and an angle
$\Phi$ which is the polar angle $\phi$ times a function of the redial
coordinate, is applied to the field equation of modified theory of gravity.
Exact vacuum solution is derived whose scalar torsion, $T ={T^\alpha}_{\mu \nu}
{S_\alpha}^{\mu \... | [
{
"created": "Mon, 5 Jan 2015 08:14:21 GMT",
"version": "v1"
}
] | 2015-01-07 | [
[
"Nashed",
"G. G. L.",
""
]
] | Tetrad field, with two unknown functions of radial coordinate and an angle $\Phi$ which is the polar angle $\phi$ times a function of the redial coordinate, is applied to the field equation of modified theory of gravity. Exact vacuum solution is derived whose scalar torsion, $T ={T^\alpha}_{\mu \nu} {S_\alpha}^{\mu \nu... |
1306.0908 | Richard Brito | Richard Brito, Vitor Cardoso, Paolo Pani | Partially massless gravitons do not destroy general relativity black
holes | 5 pages, 1 figure; v2: matched to published version; v3: references
added | Phys.Rev.D87:124024,2013 | 10.1103/PhysRevD.87.124024 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent nonlinear completions of Fierz-Pauli theory for a massive spin-2 field
include nonlinear massive gravity and bimetric theories. The spectrum of
black-hole solutions in these theories is rich, and comprises the same vacuum
solutions of Einstein's gravity enlarged to include a cosmological constant. It
was recen... | [
{
"created": "Tue, 4 Jun 2013 20:00:16 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Jun 2013 12:51:25 GMT",
"version": "v2"
},
{
"created": "Thu, 22 Aug 2013 22:13:54 GMT",
"version": "v3"
}
] | 2013-08-26 | [
[
"Brito",
"Richard",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Pani",
"Paolo",
""
]
] | Recent nonlinear completions of Fierz-Pauli theory for a massive spin-2 field include nonlinear massive gravity and bimetric theories. The spectrum of black-hole solutions in these theories is rich, and comprises the same vacuum solutions of Einstein's gravity enlarged to include a cosmological constant. It was recentl... |
1707.07586 | Carlos Alex Souza da Silva Dr | C. A. S. Silva | Loop quantum cosmology on a brane via holography | 6 pages. New results added | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter, we demonstrate that Loop Quantum Cosmology equations, with a
near vanishing late time cosmological constant, can be induced on a brane in a
Randall-Sundrum II scenario, corresponding to the holographic dual of a
strongly coupled string regime in the bulk. Such results can establish a
possible connecti... | [
{
"created": "Thu, 20 Jul 2017 21:08:24 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Mar 2019 01:24:27 GMT",
"version": "v2"
}
] | 2019-03-08 | [
[
"Silva",
"C. A. S.",
""
]
] | In this letter, we demonstrate that Loop Quantum Cosmology equations, with a near vanishing late time cosmological constant, can be induced on a brane in a Randall-Sundrum II scenario, corresponding to the holographic dual of a strongly coupled string regime in the bulk. Such results can establish a possible connection... |
2008.07837 | Luciano Gabbanelli | Luciano Gabbanelli and Silvia De Bianchi | Cosmological implications of the hydrodynamical phase of group field
theory | 34 pages | General Relativity and Gravitation 53(66), 2021 | 10.1007/s10714-021-02833-z | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this review we focus on the main cosmological implications of the Group
Field Theory approach, according to which an effective continuum macroscopic
dynamics can be extracted from the underlying formalism for quantum gravity.
Within this picture what counts is the collective behaviour of a large number
of quanta o... | [
{
"created": "Tue, 18 Aug 2020 10:18:52 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Jun 2021 10:36:55 GMT",
"version": "v2"
}
] | 2022-04-27 | [
[
"Gabbanelli",
"Luciano",
""
],
[
"De Bianchi",
"Silvia",
""
]
] | In this review we focus on the main cosmological implications of the Group Field Theory approach, according to which an effective continuum macroscopic dynamics can be extracted from the underlying formalism for quantum gravity. Within this picture what counts is the collective behaviour of a large number of quanta of ... |
1207.5318 | Yongwan Kim | Wontae Kim and Yongwan Kim | Phase transition of quantum corrected Schwarzschild black hole | 12 pages, 4 figures, added : version accepted for publication in PLB | Phys.Lett.B 718:687-691,2012 | 10.1016/j.physletb.2012.11.017 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the thermodynamic phase transition of a quantum-corrected
Schwarzschild black hole. The modified metric affects the critical temperature
which is slightly less than the conventional one. The space without black holes
is not the hot flat space but the hot curved space due to vacuum fluctuations
so that there ... | [
{
"created": "Mon, 23 Jul 2012 08:43:23 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Nov 2012 08:26:54 GMT",
"version": "v2"
}
] | 2013-02-15 | [
[
"Kim",
"Wontae",
""
],
[
"Kim",
"Yongwan",
""
]
] | We study the thermodynamic phase transition of a quantum-corrected Schwarzschild black hole. The modified metric affects the critical temperature which is slightly less than the conventional one. The space without black holes is not the hot flat space but the hot curved space due to vacuum fluctuations so that there ap... |
1606.00207 | Alessandro Nagar | Alessandro Nagar, Abhay G. Shah | iResum: a new paradigm for resumming gravitational wave amplitudes | 6 pages, 7 figures. Improved discussion for the comparable-mass case | Phys. Rev. D 94, 104017 (2016) | 10.1103/PhysRevD.94.104017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a new, resummed, analytical form of the post-Newtonian (PN),
factorized, multipolar amplitude corrections $f_{\ell m}$ of the
effective-one-body (EOB) gravitational waveform of spinning, nonprecessing,
circularized, coalescing black hole binaries (BBHs). This stems from the
following two-step paradigm: (... | [
{
"created": "Wed, 1 Jun 2016 10:20:27 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Sep 2016 10:25:36 GMT",
"version": "v2"
}
] | 2016-11-15 | [
[
"Nagar",
"Alessandro",
""
],
[
"Shah",
"Abhay G.",
""
]
] | We introduce a new, resummed, analytical form of the post-Newtonian (PN), factorized, multipolar amplitude corrections $f_{\ell m}$ of the effective-one-body (EOB) gravitational waveform of spinning, nonprecessing, circularized, coalescing black hole binaries (BBHs). This stems from the following two-step paradigm: (i)... |
1412.8111 | Sunil Maharaj | G. Z. Abebe, S. D. Maharaj, K. S. Govinder | Geodesic models generated by Lie symmetries | 16 pages, Submitted for publication | Gen. Relativ. Gravit. 46, 1650 (2014) | 10.1007/s10714-013-1650-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the junction condition relating the pressure to the heat flux at the
boundary of a shearing and expanding spherically symmetric radiating star when
the fluid particles are travelling in geodesic motion. The Lie symmetry
generators that leave the junction condition invariant are identified and the
optimal sys... | [
{
"created": "Sun, 28 Dec 2014 05:11:08 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Abebe",
"G. Z.",
""
],
[
"Maharaj",
"S. D.",
""
],
[
"Govinder",
"K. S.",
""
]
] | We study the junction condition relating the pressure to the heat flux at the boundary of a shearing and expanding spherically symmetric radiating star when the fluid particles are travelling in geodesic motion. The Lie symmetry generators that leave the junction condition invariant are identified and the optimal syste... |
2311.11661 | Moreshwar Tayde | Moreshwar Tayde, Zinnat Hassan and P.K. Sahoo | Conformally symmetric wormhole solutions supported by non-commutative
geometries in the context of $f(Q,T)$ gravity | Chinese Journal of Physics accepted version | Chinese Journal of Physics, 89 (2024) 195-209 | 10.1016/j.cjph.2024.02.003 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | This paper examines wormhole geometries in the context of $f(Q,T)$ gravity
under the background of non-commutative distributions. We discuss the
analytical solutions assuming spherical symmetry and the presence of conformal
Killing vectors, which provides a systematic approach for seeking exact
wormhole solutions. Sp... | [
{
"created": "Mon, 20 Nov 2023 10:52:24 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Dec 2023 08:30:04 GMT",
"version": "v2"
},
{
"created": "Sun, 4 Feb 2024 09:21:16 GMT",
"version": "v3"
},
{
"created": "Wed, 28 Feb 2024 04:00:38 GMT",
"version": "v4"
}
] | 2024-03-22 | [
[
"Tayde",
"Moreshwar",
""
],
[
"Hassan",
"Zinnat",
""
],
[
"Sahoo",
"P. K.",
""
]
] | This paper examines wormhole geometries in the context of $f(Q,T)$ gravity under the background of non-commutative distributions. We discuss the analytical solutions assuming spherical symmetry and the presence of conformal Killing vectors, which provides a systematic approach for seeking exact wormhole solutions. Spec... |
1512.04411 | Tomonori Totani | Tomonori Totani (UTokyo) | Initial Conditions of Inhomogeneous Universe and the Cosmological
Constant Problem | 11 pages, no figure, matches the published version in JCAP. This is
the first appearance in the gr-qc daily mailings because of the primary
category change made by arXiv | JCAP 06 (2016) 003 | 10.1088/1475-7516/2016/06/003 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Deriving the Einstein field equations (EFE) with matter fluid from the action
principle is not straightforward, because mass conservation must be added as an
additional constraint to make rest-frame mass density variable in reaction to
metric variation. This can be avoided by introducing a constraint
$\delta(\sqrt{-g... | [
{
"created": "Wed, 25 Nov 2015 03:47:39 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Feb 2016 06:08:30 GMT",
"version": "v2"
},
{
"created": "Tue, 24 May 2016 17:10:01 GMT",
"version": "v3"
},
{
"created": "Fri, 10 Jun 2016 02:52:36 GMT",
"version": "v4"
}
] | 2016-06-13 | [
[
"Totani",
"Tomonori",
"",
"UTokyo"
]
] | Deriving the Einstein field equations (EFE) with matter fluid from the action principle is not straightforward, because mass conservation must be added as an additional constraint to make rest-frame mass density variable in reaction to metric variation. This can be avoided by introducing a constraint $\delta(\sqrt{-g})... |
1704.05681 | Leandros Perivolaropoulos | L. Perivolaropoulos | Cosmological Horizons, Uncertainty Principle and Maximum Length Quantum
Mechanics | 11 pages, 7 Figures. The Mathematica file that was used for the
production of the Figures may be downloaded from
http://leandros.physics.uoi.gr/maxlenqm/ | Phys. Rev. D 95, 103523 (2017) | 10.1103/PhysRevD.95.103523 | null | gr-qc astro-ph.CO hep-ph hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cosmological particle horizon is the maximum measurable length in the
Universe. The existence of such a maximum observable length scale implies a
modification of the quantum uncertainty principle. Thus due to non-locality of
quantum mechanics, the global properties of the Universe could produce a
signature on the... | [
{
"created": "Wed, 19 Apr 2017 10:39:50 GMT",
"version": "v1"
}
] | 2017-06-07 | [
[
"Perivolaropoulos",
"L.",
""
]
] | The cosmological particle horizon is the maximum measurable length in the Universe. The existence of such a maximum observable length scale implies a modification of the quantum uncertainty principle. Thus due to non-locality of quantum mechanics, the global properties of the Universe could produce a signature on the b... |
1912.10533 | Karan Jani | Richard Udall, Karan Jani, Jacob Lange, Richard O'Shaughnessy, James
Clark, Laura Cadonati, Deirdre Shoemaker, Kelly Holley-Bockelmann | Inferring Parameters of GW170502: The Loudest Intermediate-mass Black
Hole Trigger in LIGO's O1/O2 data | 6 pages, 4 figures, 3 tables; Accepted for publication in the
Astrophysical Journal | ApJ, vol. 900, issue 1, article 80 (2020) | 10.3847/1538-4357/abab9d | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave (GW) measurements provide the most robust constraints of
the mass of astrophysical black holes. Using state-of-the-art GW signal models
and a unique parameter estimation technique, we infer the source parameters of
the loudest marginal trigger, GW170502, found by LIGO from 2015 to 2017. If
this tri... | [
{
"created": "Sun, 22 Dec 2019 21:01:34 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Aug 2020 18:01:11 GMT",
"version": "v2"
}
] | 2020-09-02 | [
[
"Udall",
"Richard",
""
],
[
"Jani",
"Karan",
""
],
[
"Lange",
"Jacob",
""
],
[
"O'Shaughnessy",
"Richard",
""
],
[
"Clark",
"James",
""
],
[
"Cadonati",
"Laura",
""
],
[
"Shoemaker",
"Deirdre",
""
],
[
... | Gravitational wave (GW) measurements provide the most robust constraints of the mass of astrophysical black holes. Using state-of-the-art GW signal models and a unique parameter estimation technique, we infer the source parameters of the loudest marginal trigger, GW170502, found by LIGO from 2015 to 2017. If this trigg... |
1403.2885 | Juan A. Valiente-Kroon | C. L\"ubbe and J. A. Valiente Kroon | Spherically symmetric Anti-de Sitter-like Einstein-Yang-Mills spacetimes | 31 pages, 2 figures. Analysis extended to include a Yang-Mills fields
with non-vanishing magnetic part | null | 10.1103/PhysRevD.90.024021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The conformal field equations are used to discuss the local existence of
spherically symmetric solutions to the Einstein-Yang-Mills system which behave
asymptotically like the anti-de Sitter spacetime. By using a gauge based on
conformally privileged curves we obtain a formulation of the problem in terms
of an initia... | [
{
"created": "Wed, 12 Mar 2014 11:11:51 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Jun 2014 19:16:58 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Lübbe",
"C.",
""
],
[
"Kroon",
"J. A. Valiente",
""
]
] | The conformal field equations are used to discuss the local existence of spherically symmetric solutions to the Einstein-Yang-Mills system which behave asymptotically like the anti-de Sitter spacetime. By using a gauge based on conformally privileged curves we obtain a formulation of the problem in terms of an initial ... |
1506.03517 | Edward Anderson | Edward Anderson | Problem of Time: Temporal Relationalism Compatibility of Other Local
Classical Facets Completed | 28 pages including 13 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Temporal Relationalism (TR) is that there is no time for the universe as a
whole at the primary level. Time emerges rather at a secondary level; one
compelling idea for this is Mach's `time is to be abstracted from change'. TR
leads to, and better explains, the well-known Frozen Formalism Problem
encountered in GR at... | [
{
"created": "Thu, 11 Jun 2015 00:37:59 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Anderson",
"Edward",
""
]
] | Temporal Relationalism (TR) is that there is no time for the universe as a whole at the primary level. Time emerges rather at a secondary level; one compelling idea for this is Mach's `time is to be abstracted from change'. TR leads to, and better explains, the well-known Frozen Formalism Problem encountered in GR at t... |
2311.16893 | Tiberiu Harko | Maria Cr\u{a}ciun, Tiberiu Harko | Testing Weyl geometric gravity with the SPARC galactic rotation curves
database | 23 pages, 21 figures | null | null | null | gr-qc astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a detailed investigation of the properties of the galactic
rotation curves in the Weyl geometric gravity model, in which the gravitational
action is constructed from the square of the Weyl curvature scalar, and of the
strength of the Weyl vector. The theory admits a scalar-vector tensor
representation, obt... | [
{
"created": "Tue, 28 Nov 2023 15:44:44 GMT",
"version": "v1"
}
] | 2023-11-29 | [
[
"Crăciun",
"Maria",
""
],
[
"Harko",
"Tiberiu",
""
]
] | We present a detailed investigation of the properties of the galactic rotation curves in the Weyl geometric gravity model, in which the gravitational action is constructed from the square of the Weyl curvature scalar, and of the strength of the Weyl vector. The theory admits a scalar-vector tensor representation, obtai... |
gr-qc/9803077 | Hisaaki Shinkai | Gen Yoneda (Waseda U.) and Hisa-aki Shinkai (Washington U., St.Louis) | Symmetric hyperbolic system in the Ashtekar formulation | 4 pages, RevTeX, to appear in Phys. Rev. Lett., Comments added, refs
updated | Phys.Rev.Lett. 82 (1999) 263-266 | 10.1103/PhysRevLett.82.263 | null | gr-qc math-ph math.MP | null | We present a first-order symmetric hyperbolic system in the Ashtekar
formulation of general relativity for vacuum spacetime. We add terms from
constraint equations to the evolution equations with appropriate combinations,
which is the same technique used by Iriondo, Leguizam\'on and Reula [Phys. Rev.
Lett. 79, 4732 (... | [
{
"created": "Tue, 24 Mar 1998 10:35:54 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Dec 1998 00:14:53 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Yoneda",
"Gen",
"",
"Waseda U."
],
[
"Shinkai",
"Hisa-aki",
"",
"Washington U., St.Louis"
]
] | We present a first-order symmetric hyperbolic system in the Ashtekar formulation of general relativity for vacuum spacetime. We add terms from constraint equations to the evolution equations with appropriate combinations, which is the same technique used by Iriondo, Leguizam\'on and Reula [Phys. Rev. Lett. 79, 4732 (19... |
1808.08962 | Vitor Cardoso | Vitor Cardoso, Masashi Kimura, Andrea Maselli, Leonardo Senatore | Black holes in an Effective Field Theory extension of GR | 8 pages, RevTex4. v2: Minor edits. v3: Typo in Eq. (16) corrected.
Published in Physical Review Letters | Phys. Rev. Lett. 121, 251105 (2018) | 10.1103/PhysRevLett.121.251105 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Effective field theory methods suggest that some rather-general extensions of
General Relativity include, or are mimicked by, certain higher-order curvature
corrections, with coupling constants expected to be small but otherwise
arbitrary. Thus, the tantalizing prospect to test the fundamental nature of
gravity with ... | [
{
"created": "Mon, 27 Aug 2018 18:00:02 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Nov 2018 19:00:09 GMT",
"version": "v2"
},
{
"created": "Mon, 28 Aug 2023 17:36:38 GMT",
"version": "v3"
}
] | 2023-08-29 | [
[
"Cardoso",
"Vitor",
""
],
[
"Kimura",
"Masashi",
""
],
[
"Maselli",
"Andrea",
""
],
[
"Senatore",
"Leonardo",
""
]
] | Effective field theory methods suggest that some rather-general extensions of General Relativity include, or are mimicked by, certain higher-order curvature corrections, with coupling constants expected to be small but otherwise arbitrary. Thus, the tantalizing prospect to test the fundamental nature of gravity with gr... |
0710.4153 | Craig J. Hogan | Craig J. Hogan | Quantum Indeterminacy of Emergent Spacetime | null | null | null | null | gr-qc astro-ph hep-th | null | It is shown that nearly-flat 3+1D spacetime emerging from a dual quantum
field theory in 2+1D displays quantum fluctuations from classical Euclidean
geometry on macroscopic scales. A covariant holographic mapping is assumed,
where plane wave states with wavevector k on a 2D surface map onto classical
null trajectorie... | [
{
"created": "Mon, 22 Oct 2007 21:13:28 GMT",
"version": "v1"
},
{
"created": "Sun, 28 Oct 2007 12:43:50 GMT",
"version": "v2"
}
] | 2007-10-28 | [
[
"Hogan",
"Craig J.",
""
]
] | It is shown that nearly-flat 3+1D spacetime emerging from a dual quantum field theory in 2+1D displays quantum fluctuations from classical Euclidean geometry on macroscopic scales. A covariant holographic mapping is assumed, where plane wave states with wavevector k on a 2D surface map onto classical null trajectories ... |
1512.00856 | Shahar Hod | Shahar Hod | Ten shades of black | 5 pages. This essay received an Honorable Mention from the Gravity
Research Foundation 2015 | International Journal of Modern Physics D 24, No. 12, 1544007
(2015) | 10.1142/S0218271815440071 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The holographic principle has taught us that, as far as their entropy content
is concerned, black holes in $(3+1)$-dimensional curved spacetimes behave as
ordinary thermodynamic systems in flat $(2+1)$-dimensional spacetimes. In this
essay we point out that the opposite behavior can also be observed in
black-hole phy... | [
{
"created": "Wed, 2 Dec 2015 21:00:05 GMT",
"version": "v1"
}
] | 2015-12-09 | [
[
"Hod",
"Shahar",
""
]
] | The holographic principle has taught us that, as far as their entropy content is concerned, black holes in $(3+1)$-dimensional curved spacetimes behave as ordinary thermodynamic systems in flat $(2+1)$-dimensional spacetimes. In this essay we point out that the opposite behavior can also be observed in black-hole physi... |
1212.5677 | Daniel Mart\'in-de Blas | Laura Castell\'o Gomar, Jer\'onimo Cortez, Daniel Mart\'in-de Blas,
Guillermo A. Mena Marug\'an, Jos\'e. M. Velhinho | Unitary evolution and uniqueness of the Fock quantization in flat
cosmologies with compact spatial sections | 23 pages. New section 4.2. Added references. Published in EJTP | EJTP 11 (2014) 43-64 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Fock quantization of scalar fields with a time dependent mass in
cosmological scenarios with flat compact spatial sections. This framework
describes physically interesting situations like, e.g., cosmological
perturbations in flat Friedmann-Robertson-Walker spacetimes, generally
including a suitable scali... | [
{
"created": "Sat, 22 Dec 2012 10:28:57 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Oct 2014 16:24:18 GMT",
"version": "v2"
}
] | 2014-10-07 | [
[
"Gomar",
"Laura Castelló",
""
],
[
"Cortez",
"Jerónimo",
""
],
[
"Blas",
"Daniel Martín-de",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
],
[
"Velhinho",
"José. M.",
""
]
] | We study the Fock quantization of scalar fields with a time dependent mass in cosmological scenarios with flat compact spatial sections. This framework describes physically interesting situations like, e.g., cosmological perturbations in flat Friedmann-Robertson-Walker spacetimes, generally including a suitable scaling... |
gr-qc/9606068 | Alexander L. Gromov | Alexander Gromov (St-Petersburg State Thechnical University, Russia) | The Analysis of Initial Conditions for the LTB Model | LaTeX,9 pages,Invited talk at the Cosmion'96 Int. Conf. 1996;
submitted to Gravitation and Astrophysics | null | null | IRB-StP-GR-120696 | gr-qc | null | The Caushy problem in the LTB model is formulated. The rules of calculating
three undetermined functions which defined a solution in the LTB model are
presented. One example of exact nonhomogeneous model is studied. The limit
transformation to the FRW model is shown.
| [
{
"created": "Mon, 24 Jun 1996 09:59:32 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gromov",
"Alexander",
"",
"St-Petersburg State Thechnical University, Russia"
]
] | The Caushy problem in the LTB model is formulated. The rules of calculating three undetermined functions which defined a solution in the LTB model are presented. One example of exact nonhomogeneous model is studied. The limit transformation to the FRW model is shown. |
1701.02340 | Edgar Leon | E. A. Le\'on, J. A. Nieto, E. R\'ios | Hyperbolic trajectories around Black Holes | 13 pages, 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse test particle's trajectories around the geometry of a
Schwarzschild black hole. In order to resemble sections of jets in the
neighborhood of a black hole, we consider the conserved quantities
corresponding to constraints imposed on the trajectories of the test particles,
namely conic and hyperboloidic traj... | [
{
"created": "Mon, 9 Jan 2017 20:30:51 GMT",
"version": "v1"
}
] | 2017-01-11 | [
[
"León",
"E. A.",
""
],
[
"Nieto",
"J. A.",
""
],
[
"Ríos",
"E.",
""
]
] | We analyse test particle's trajectories around the geometry of a Schwarzschild black hole. In order to resemble sections of jets in the neighborhood of a black hole, we consider the conserved quantities corresponding to constraints imposed on the trajectories of the test particles, namely conic and hyperboloidic trajec... |
2209.09462 | Yu Nakayama | Yu Nakayama | Geometrical Trinity of Unimodular Gravity | 16 pages | null | 10.1088/1361-6382/acd100 | RUP-22-19 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a Weyl transverse diffeomorphism invariant theory of
teleparallel gravity by employing the Weyl compensator formalism. The
low-energy dynamics has a single spin two gravition without a scalar degree of
freedom. By construction, it is equivalent to unimodular gravity (as well as
Einstein's general relativ... | [
{
"created": "Tue, 20 Sep 2022 04:40:17 GMT",
"version": "v1"
}
] | 2023-05-31 | [
[
"Nakayama",
"Yu",
""
]
] | We construct a Weyl transverse diffeomorphism invariant theory of teleparallel gravity by employing the Weyl compensator formalism. The low-energy dynamics has a single spin two gravition without a scalar degree of freedom. By construction, it is equivalent to unimodular gravity (as well as Einstein's general relativit... |
2206.05799 | Sashwat Tanay Dr. | Sashwat Tanay | Integrability and action-angle-based solution of the post-Newtonian BBH
system (lecture notes) | Pedagogical lecture notes based on Refs. arXiv:2110.15351,
2012.06586, 1908.02927, 2210.01605. Accompanied by Mathematica package at
https://github.com/sashwattanay/BBH-PN-Toolkit. For the most updated version
of these notes (with typos fixed), see
https://github.com/sashwattanay/lectures_integrability_action-a... | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | These lecture notes are based on Refs. arXiv:2110.15351, arXiv:2012.06586,
and arXiv:1908.02927, which aim to give closed-form solutions to the spinning,
eccentric binary black hole dynamics at 1.5PN via two different equivalent
ways: (1) the standard way of integrating Hamilton's equations and (2) using
action-angle... | [
{
"created": "Sun, 12 Jun 2022 17:33:32 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Oct 2022 14:57:48 GMT",
"version": "v2"
},
{
"created": "Tue, 23 May 2023 19:57:06 GMT",
"version": "v3"
}
] | 2023-05-25 | [
[
"Tanay",
"Sashwat",
""
]
] | These lecture notes are based on Refs. arXiv:2110.15351, arXiv:2012.06586, and arXiv:1908.02927, which aim to give closed-form solutions to the spinning, eccentric binary black hole dynamics at 1.5PN via two different equivalent ways: (1) the standard way of integrating Hamilton's equations and (2) using action-angle v... |
0907.2798 | Subenoy Chakraborty | Nairwita Mazumder, Subenoy Chakraborty | Thermodynamics of the Universe Filled with Perfect Fluid Having Variable
Equation of State | 14 figures | Astrophys.Space Sci.330:137-144,2010 | 10.1007/s10509-010-0365-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the thermodynamics of the universe containing perfect fluid with
equation of state $p=\omega\rho,\omega$ is variable. Here we choose $\omega$ to
be a function of the red shift variable $z$ and four different choices of
$\omega$ has been investigated. Also the laws of thermodynamics are examined
considering t... | [
{
"created": "Thu, 16 Jul 2009 09:45:34 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Mazumder",
"Nairwita",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | We study the thermodynamics of the universe containing perfect fluid with equation of state $p=\omega\rho,\omega$ is variable. Here we choose $\omega$ to be a function of the red shift variable $z$ and four different choices of $\omega$ has been investigated. Also the laws of thermodynamics are examined considering the... |
1803.04605 | James B. Hartle | Murray Gell-Mann and James B. Hartle | Quantum Mechanics in the Light of Quantum Cosmology | 29 pages, 4 figures, pdf, an older paper posted for accessibility | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We sketch a quantum mechanical framework for the universe as a whole. Within
that framework we propose a program for describing the ultimate origin in
quantum cosmology of the quasiclassical domain of familiar experience and for
characterizing the process of measurement. Predictions in quantum mechanics are
made from... | [
{
"created": "Tue, 13 Mar 2018 03:31:55 GMT",
"version": "v1"
}
] | 2018-03-14 | [
[
"Gell-Mann",
"Murray",
""
],
[
"Hartle",
"James B.",
""
]
] | We sketch a quantum mechanical framework for the universe as a whole. Within that framework we propose a program for describing the ultimate origin in quantum cosmology of the quasiclassical domain of familiar experience and for characterizing the process of measurement. Predictions in quantum mechanics are made from p... |
1904.08027 | Cosimo Bambi | Honghui Liu, Askar B. Abdikamalov, Dimitry Ayzenberg, Cosimo Bambi,
Thomas Dauser, Javier A. Garcia, Sourabh Nampalliwar | Testing the Kerr hypothesis using X-ray reflection spectroscopy with
NuSTAR data of Cygnus X-1 in the soft state | 15 pages, 8 figures. v2: refereed version | Phys. Rev. D 99, 123007 (2019) | 10.1103/PhysRevD.99.123007 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We continue exploring the constraining capabilities of X-ray reflection
spectroscopy to test the Kerr-nature of astrophysical black holes and we
present the results of our analysis of two NuSTAR observations of Cygnus X-1 in
the soft state. We find that the final measurement can strongly depend on the
assumption of t... | [
{
"created": "Wed, 17 Apr 2019 00:19:21 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Jun 2019 14:54:11 GMT",
"version": "v2"
}
] | 2019-06-12 | [
[
"Liu",
"Honghui",
""
],
[
"Abdikamalov",
"Askar B.",
""
],
[
"Ayzenberg",
"Dimitry",
""
],
[
"Bambi",
"Cosimo",
""
],
[
"Dauser",
"Thomas",
""
],
[
"Garcia",
"Javier A.",
""
],
[
"Nampalliwar",
"Sourabh",
"... | We continue exploring the constraining capabilities of X-ray reflection spectroscopy to test the Kerr-nature of astrophysical black holes and we present the results of our analysis of two NuSTAR observations of Cygnus X-1 in the soft state. We find that the final measurement can strongly depend on the assumption of the... |
1711.09922 | Eric Linder | Michael R.R. Good, Eric V. Linder | Eternal and Evanescent Black Holes: It's All Done With Mirrors | 13 pages, 11 figures | Phys. Rev. D 97, 065006 (2018) | 10.1103/PhysRevD.97.065006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The analogy between black hole radiation and accelerating mirror radiation
(the dynamical Casimir effect) is particularly strong for mirror trajectories
giving rise to a constant thermal flux of particles. We present new ways to
achieve such thermal plateaus, and customize their finite, semi-infinite, and
eternal pre... | [
{
"created": "Mon, 27 Nov 2017 19:00:15 GMT",
"version": "v1"
}
] | 2018-03-14 | [
[
"Good",
"Michael R. R.",
""
],
[
"Linder",
"Eric V.",
""
]
] | The analogy between black hole radiation and accelerating mirror radiation (the dynamical Casimir effect) is particularly strong for mirror trajectories giving rise to a constant thermal flux of particles. We present new ways to achieve such thermal plateaus, and customize their finite, semi-infinite, and eternal prese... |
gr-qc/9407013 | Daksh Lohiya | Daksh Lohia | Gravity Balls | Normal TeX, 6 pages, 1 figure available from author | null | null | null | gr-qc | null | The existence of non trivial, non topological solutions in a class of
induced, effective gravity models arising out of a non minimally coupled scalar
field is established. We shall call such solutions ``Gravity Balls'' as the
effective gravitational constant inside the soliton differs from its effective
value outside... | [
{
"created": "Wed, 13 Jul 1994 09:16:10 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"Lohia",
"Daksh",
""
]
] | The existence of non trivial, non topological solutions in a class of induced, effective gravity models arising out of a non minimally coupled scalar field is established. We shall call such solutions ``Gravity Balls'' as the effective gravitational constant inside the soliton differs from its effective value outside. |
2210.05687 | Daniel Mayerson | Daniel R. Mayerson | Gravitational Multipoles in General Stationary Spacetimes | 22 pages + appendices; v2: SciPost published version; significant
improvements and extensions (most notably a new section 3.3 and additions in
section 2.1) | SciPost Phys. 15, 154 (2023) | 10.21468/SciPostPhys.15.4.154 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Geroch-Hansen and Thorne (ACMC) formalisms give rigorous and equivalent
definitions for gravitational multipoles in stationary vacuum spacetimes.
However, despite their ubiquitous use in gravitational physics, it has not been
shown that these formalisms can be generalized to non-vacuum stationary
solutions, excep... | [
{
"created": "Tue, 11 Oct 2022 18:00:03 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Oct 2023 07:58:47 GMT",
"version": "v2"
}
] | 2023-10-13 | [
[
"Mayerson",
"Daniel R.",
""
]
] | The Geroch-Hansen and Thorne (ACMC) formalisms give rigorous and equivalent definitions for gravitational multipoles in stationary vacuum spacetimes. However, despite their ubiquitous use in gravitational physics, it has not been shown that these formalisms can be generalized to non-vacuum stationary solutions, except ... |
1401.6343 | Alexey Golovnev | Alexey Golovnev | On non-perturbative analysis of massive and bimetric gravity | 5 pages; prepared for the Proceedings of II Russian-Spanish Congress
on Particle and Nuclear Physics at all Scales and Cosmology | AIP Conference Proceedings 1606, 299 (2014) | 10.1063/1.4891145 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is my contribution to Proceedings of II Russian-Spanish Congress on
Particle and Nuclear Physics at all Scales and Cosmology, Saint Petersburg,
Russia, October 1 - 4, 2013. We give a brief overview of the ghost-free massive
and bimetric gravity emphasising its non-perturbative aspects and ADM approach
to calcula... | [
{
"created": "Fri, 24 Jan 2014 14:15:51 GMT",
"version": "v1"
}
] | 2014-08-20 | [
[
"Golovnev",
"Alexey",
""
]
] | This is my contribution to Proceedings of II Russian-Spanish Congress on Particle and Nuclear Physics at all Scales and Cosmology, Saint Petersburg, Russia, October 1 - 4, 2013. We give a brief overview of the ghost-free massive and bimetric gravity emphasising its non-perturbative aspects and ADM approach to calculati... |
1806.10238 | Costantino Pacilio | Costantino Pacilio | Scalar charge of black holes in Einstein-Maxwell-dilaton theory | v2: 6 pages, corrected typos, references added | Phys. Rev. D 98, 064055 (2018) | 10.1103/PhysRevD.98.064055 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the monopole scalar charge of black holes in
Einstein--Maxwell--dilaton theory is proportional to the electric potential at
the event horizon, with a proportionality factor given by (minus) the scalar
coupling constant. We also show that the scalar charge, in the weak electric
charge limit, does not depe... | [
{
"created": "Tue, 26 Jun 2018 22:58:22 GMT",
"version": "v1"
},
{
"created": "Sun, 15 Jul 2018 11:08:59 GMT",
"version": "v2"
}
] | 2018-10-03 | [
[
"Pacilio",
"Costantino",
""
]
] | We show that the monopole scalar charge of black holes in Einstein--Maxwell--dilaton theory is proportional to the electric potential at the event horizon, with a proportionality factor given by (minus) the scalar coupling constant. We also show that the scalar charge, in the weak electric charge limit, does not depend... |
0704.1058 | Pilar Ruiz-Lapuente | Pilar Ruiz-Lapuente | Dark energy, gravitation and supernovae | Invited Topical Review (Class. Quan. Grav) 27 pages Journal link:
http://stacks.iop.org/0264-9381/24/R91 | Class.Quant.Grav.24:R91-R111,2007 | 10.1088/0264-9381/24/11/R01 | null | gr-qc astro-ph hep-ph | null | The discovery of the acceleration of the rate of expansion of the Universe
fosters new explorations of the behavior of gravitation theories in the
cosmological context. Either the GR framework is valid but a cosmic component
with a negative equation of state is dominating the energy--matter contents or
the Universe i... | [
{
"created": "Mon, 9 Apr 2007 03:10:51 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Jun 2007 23:57:24 GMT",
"version": "v2"
}
] | 2010-11-02 | [
[
"Ruiz-Lapuente",
"Pilar",
""
]
] | The discovery of the acceleration of the rate of expansion of the Universe fosters new explorations of the behavior of gravitation theories in the cosmological context. Either the GR framework is valid but a cosmic component with a negative equation of state is dominating the energy--matter contents or the Universe is ... |
0902.1718 | Valentino Lacquaniti | Valentino Lacquaniti, Giovanni Montani | Dynamics of Matter in a Compactified Kaluza-Klein Model | 21 pages, to appear on IJMPD | Int.J.Mod.Phys.D18:929-946,2009 | 10.1142/S0218271809014844 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A longstanding problem in Kaluza-Klein models is the description of matter
dynamics. Within the 5D model, the dimensional reduction of the geodesic motion
for a 5D free test particle formally restores electrodynamics, but the reduced
4D particle shows a charge-mass ratio that is upper bounded, such that it
cannot fit... | [
{
"created": "Tue, 10 Feb 2009 18:18:48 GMT",
"version": "v1"
}
] | 2009-07-22 | [
[
"Lacquaniti",
"Valentino",
""
],
[
"Montani",
"Giovanni",
""
]
] | A longstanding problem in Kaluza-Klein models is the description of matter dynamics. Within the 5D model, the dimensional reduction of the geodesic motion for a 5D free test particle formally restores electrodynamics, but the reduced 4D particle shows a charge-mass ratio that is upper bounded, such that it cannot fit t... |
gr-qc/9805100 | Viqar Husain | Viqar Husain | Initial data for gravity coupled to scalar, electromagnetic and
Yang-Mills fields | 16 pages, RevTeX, references added, presentational changes, version
to appear in Phys Rev. D | Phys.Rev. D59 (1999) 044004 | 10.1103/PhysRevD.59.044004 | UBCTH | gr-qc hep-th | null | We give ansatze for solving classically the initial value constraints of
general relativity minimally coupled to a scalar field, electromagnetism or
Yang-Mills theory. The results include both time-symmetric and asymmetric data.
The time-asymmetric examples are used to test Penrose's cosmic censorship
inequality. We ... | [
{
"created": "Fri, 29 May 1998 00:27:26 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Nov 1998 23:56:34 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Husain",
"Viqar",
""
]
] | We give ansatze for solving classically the initial value constraints of general relativity minimally coupled to a scalar field, electromagnetism or Yang-Mills theory. The results include both time-symmetric and asymmetric data. The time-asymmetric examples are used to test Penrose's cosmic censorship inequality. We fi... |
2311.07063 | Yuki Kawasaki | Yuki Kawasaki, Shoki Iwaguchi, Tomohiro Ishikawa, Atsushi Nishizawa,
Masaaki Kitaguchi, Yutaka Yamagata, Yanbei Chen, Bin Wu, Ryuma Shimizu,
Kurumi Umemura, Kenji Tsuji, Hirohiko Shimizu, Yuta Michimura, Kazuhiro
Kobayashi, Takafumi Onishi, and Seiji Kawamura | Sagnac-type neutron displacement-noise-free interferometeric
gravitational-wave detector | 17 pages, 6figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The detection of low-frequency gravitational waves on Earth requires the
reduction of displacement noise, which dominates the low-frequency band. One
method to cancel test mass displacement noise is a neutron
displacement-noise-free interferometer (DFI). This paper proposes a new neutron
DFI configuration, a Sagnac-t... | [
{
"created": "Mon, 13 Nov 2023 04:06:03 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Jan 2024 02:17:12 GMT",
"version": "v2"
},
{
"created": "Mon, 25 Mar 2024 05:39:14 GMT",
"version": "v3"
}
] | 2024-03-26 | [
[
"Kawasaki",
"Yuki",
""
],
[
"Iwaguchi",
"Shoki",
""
],
[
"Ishikawa",
"Tomohiro",
""
],
[
"Nishizawa",
"Atsushi",
""
],
[
"Kitaguchi",
"Masaaki",
""
],
[
"Yamagata",
"Yutaka",
""
],
[
"Chen",
"Yanbei",
""
... | The detection of low-frequency gravitational waves on Earth requires the reduction of displacement noise, which dominates the low-frequency band. One method to cancel test mass displacement noise is a neutron displacement-noise-free interferometer (DFI). This paper proposes a new neutron DFI configuration, a Sagnac-typ... |
1605.05866 | Piyabut Burikham | Piyabut Burikham, Rujikorn Dhanawittayapol, Taum Wuthicharn | A new mass scale, implications on black hole evaporation and holography | 17 pages, 3 figures | null | 10.1142/S0217751X16500895 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a new mass scale $M_{T}=(\hbar^{2}\sqrt{\Lambda}/G)^{1/3}$
constructed from dimensional analysis by using $G$, $\hbar$ and $\Lambda$ and
discuss its physical interpretation. Based on the Generalized Uncertainty
Relation, a black hole with age comparable to the universe would stop radiating
when the mass r... | [
{
"created": "Thu, 19 May 2016 09:37:33 GMT",
"version": "v1"
}
] | 2016-06-22 | [
[
"Burikham",
"Piyabut",
""
],
[
"Dhanawittayapol",
"Rujikorn",
""
],
[
"Wuthicharn",
"Taum",
""
]
] | We consider a new mass scale $M_{T}=(\hbar^{2}\sqrt{\Lambda}/G)^{1/3}$ constructed from dimensional analysis by using $G$, $\hbar$ and $\Lambda$ and discuss its physical interpretation. Based on the Generalized Uncertainty Relation, a black hole with age comparable to the universe would stop radiating when the mass rea... |
2307.12585 | Lorenzo Speri | Lorenzo Speri, Michael L. Katz, Alvin J. K. Chua, Scott A. Hughes,
Niels Warburton, Jonathan E. Thompson, Christian E. A. Chapman-Bird, Jonathan
R. Gair | Fast and Fourier: Extreme Mass Ratio Inspiral Waveforms in the Frequency
Domain | 23 pages, 6 figures | Front. Appl. Math. Stat. 9 (2023) | 10.3389/fams.2023.1266739 | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extreme Mass Ratio Inspirals (EMRIs) are one of the key sources for future
space-based gravitational wave interferometers. Measurements of EMRI
gravitational waves are expected to determine the characteristics of their
sources with sub-percent precision. However, their waveform generation is
challenging due to the lo... | [
{
"created": "Mon, 24 Jul 2023 07:56:07 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Jan 2024 15:10:17 GMT",
"version": "v2"
}
] | 2024-01-17 | [
[
"Speri",
"Lorenzo",
""
],
[
"Katz",
"Michael L.",
""
],
[
"Chua",
"Alvin J. K.",
""
],
[
"Hughes",
"Scott A.",
""
],
[
"Warburton",
"Niels",
""
],
[
"Thompson",
"Jonathan E.",
""
],
[
"Chapman-Bird",
"Christian... | Extreme Mass Ratio Inspirals (EMRIs) are one of the key sources for future space-based gravitational wave interferometers. Measurements of EMRI gravitational waves are expected to determine the characteristics of their sources with sub-percent precision. However, their waveform generation is challenging due to the long... |
0807.2066 | Roman Sverdlov | Roman Sverdlov | Gauge Fields in Causal Set Theory | 11 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is the second paper in a series on the dynamics of matter fields in the
causal set approach to quantum gravity. We start with the usual expression for
the Lagrangian of a charged scalar field coupled to a SU(n) Yang-Mills field,
in which the gauge field is represented by a connection form, and show how to
write ... | [
{
"created": "Sun, 13 Jul 2008 23:07:58 GMT",
"version": "v1"
}
] | 2008-07-15 | [
[
"Sverdlov",
"Roman",
""
]
] | This is the second paper in a series on the dynamics of matter fields in the causal set approach to quantum gravity. We start with the usual expression for the Lagrangian of a charged scalar field coupled to a SU(n) Yang-Mills field, in which the gauge field is represented by a connection form, and show how to write it... |
2401.12368 | Eduardo Guendelman I | Eduardo Guendelman and Jacov Portnoy | Bubble Universe from Flat Spaces | final version, published in European Physics Journal C, 10 pages | European Physics Journal C, 84, article number 418, (2024) | 10.1140/epjc/s10052-024-12750-5 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We show by matching two flat spaces one in Minkowski coordinates ( empty
space) and the other in Minkowski coordinates after a special conformal
transformation (also empty space) through a bubble with positive and constant
surface tension, that the motion of the bubble is hyperbolic. If the surface
tension is very bi... | [
{
"created": "Mon, 22 Jan 2024 21:39:17 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Apr 2024 12:26:27 GMT",
"version": "v2"
}
] | 2024-04-24 | [
[
"Guendelman",
"Eduardo",
""
],
[
"Portnoy",
"Jacov",
""
]
] | We show by matching two flat spaces one in Minkowski coordinates ( empty space) and the other in Minkowski coordinates after a special conformal transformation (also empty space) through a bubble with positive and constant surface tension, that the motion of the bubble is hyperbolic. If the surface tension is very big ... |
gr-qc/0411080 | Bijan Saha | Bijan Saha | Anisotropic cosmological models with a perfect fluid and a $\Lambda$
term | 8 pages, 8 Figures | Astrophys.Space Sci. 302 (2006) 83-91 | 10.1007/s10509-005-9008-5 | null | gr-qc | null | We consider a self-consistent system of Bianchi type-I (BI) gravitational
field and a binary mixture of perfect fluid and dark energy given by a
cosmological constant. The perfect fluid is chosen to be the one obeying either
the usual equation of state, i.e., $p = \zeta \ve$, with $\zeta \in [0, 1]$ or
a van der Waal... | [
{
"created": "Tue, 16 Nov 2004 12:35:42 GMT",
"version": "v1"
}
] | 2015-05-01 | [
[
"Saha",
"Bijan",
""
]
] | We consider a self-consistent system of Bianchi type-I (BI) gravitational field and a binary mixture of perfect fluid and dark energy given by a cosmological constant. The perfect fluid is chosen to be the one obeying either the usual equation of state, i.e., $p = \zeta \ve$, with $\zeta \in [0, 1]$ or a van der Waals ... |
1102.0487 | Karel Van Acoleyen | Karel Van Acoleyen and Jos Van Doorsselaere | Galileons from Lovelock actions | 15 pages, some extra references | null | 10.1103/PhysRevD.83.084025 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate how, for an arbitrary number of dimensions, the Galileon
actions and their covariant generalizations can be obtained through a standard
Kaluza-Klein compactification of higher-dimensional Lovelock gravity. In this
setup, the dilaton takes on the role of the Galileon. In addition, such
compactifications... | [
{
"created": "Wed, 2 Feb 2011 16:53:48 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Feb 2011 15:15:53 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"Van Acoleyen",
"Karel",
""
],
[
"Van Doorsselaere",
"Jos",
""
]
] | We demonstrate how, for an arbitrary number of dimensions, the Galileon actions and their covariant generalizations can be obtained through a standard Kaluza-Klein compactification of higher-dimensional Lovelock gravity. In this setup, the dilaton takes on the role of the Galileon. In addition, such compactifications u... |
gr-qc/0006001 | Warner A. Miller | Warner A. Miller and Arkady Kheyfets | Time in Quantum Geometrodynamics | 17 pages, 0 figures, formatted with LaTex, IJMP-A in press | Int.J.Mod.Phys. A15 (2000) 4125-4140 | 10.1142/S0217751X00001361 | null | gr-qc | null | We revisit the issue of time in quantum geometrodynamics and suggest a
quantization procedure on the space of true dynamic variables. This procedure
separates the issue of quantization from enforcing the constraints caused by
the general covariance symmetries. The resulting theory, unlike the standard
approach, takes... | [
{
"created": "Wed, 31 May 2000 23:31:28 GMT",
"version": "v1"
}
] | 2016-12-21 | [
[
"Miller",
"Warner A.",
""
],
[
"Kheyfets",
"Arkady",
""
]
] | We revisit the issue of time in quantum geometrodynamics and suggest a quantization procedure on the space of true dynamic variables. This procedure separates the issue of quantization from enforcing the constraints caused by the general covariance symmetries. The resulting theory, unlike the standard approach, takes i... |
1102.1683 | Ernesto F. Eiroa | Ernesto F. Eiroa, Claudio Simeone | Stability of charged thin shells | 8 pages, 2 figures. v2: Improved version, new references added | Phys.Rev.D83:104009,2011 | 10.1103/PhysRevD.83.104009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we study the mechanical stability of spherically symmetric
thin shells with charge, in Einstein-Maxwell and Einstein-Born-Infeld theories.
We analyze linearized perturbations preserving the symmetry, for shells around
vacuum and shells surrounding non charged black holes.
| [
{
"created": "Tue, 8 Feb 2011 18:43:48 GMT",
"version": "v1"
},
{
"created": "Wed, 4 May 2011 17:45:28 GMT",
"version": "v2"
}
] | 2011-05-05 | [
[
"Eiroa",
"Ernesto F.",
""
],
[
"Simeone",
"Claudio",
""
]
] | In this article we study the mechanical stability of spherically symmetric thin shells with charge, in Einstein-Maxwell and Einstein-Born-Infeld theories. We analyze linearized perturbations preserving the symmetry, for shells around vacuum and shells surrounding non charged black holes. |
0709.3276 | Ricardo E. Gamboa Saravi | Ricardo E. Gamboa Saravi | Infinite slabs and other weird plane symmetric space-times with constant
positive density | 8 pages | Gen.Rel.Grav.41:1459-1473,2009 | 10.1007/s10714-008-0714-5 | null | gr-qc | null | We present the exact solution of Einstein's equation corresponding to a
static and plane symmetric distribution of matter with constant positive
density located below $z=0$. This solution depends essentially on two
constants: the density $\rho$ and a parameter $\kappa$. We show that this
space-time finishes down belo... | [
{
"created": "Thu, 20 Sep 2007 19:00:35 GMT",
"version": "v1"
}
] | 2009-07-22 | [
[
"Saravi",
"Ricardo E. Gamboa",
""
]
] | We present the exact solution of Einstein's equation corresponding to a static and plane symmetric distribution of matter with constant positive density located below $z=0$. This solution depends essentially on two constants: the density $\rho$ and a parameter $\kappa$. We show that this space-time finishes down below ... |
gr-qc/0102023 | Yoshiyuki Morisawa | Daisuke Ida and Yoshiyuki Morisawa | Hidden symmetry of the three-dimensional Einstein-Maxwell equations | 5 pages | Phys.Rev. D63 (2001) 104019 | 10.1103/PhysRevD.63.104019 | KUNS-1706,YITP-01-8 | gr-qc | null | It is shown how to generate three-dimensional Einstein-Maxwell fields from
known ones in the presence of a hypersurface-orthogonal non-null Killing vector
field. The continuous symmetry group is isomorphic to the Heisenberg group
including the Harrison-type transformation. The symmetry of the
Einstein-Maxwell-dilaton... | [
{
"created": "Tue, 6 Feb 2001 13:57:34 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Ida",
"Daisuke",
""
],
[
"Morisawa",
"Yoshiyuki",
""
]
] | It is shown how to generate three-dimensional Einstein-Maxwell fields from known ones in the presence of a hypersurface-orthogonal non-null Killing vector field. The continuous symmetry group is isomorphic to the Heisenberg group including the Harrison-type transformation. The symmetry of the Einstein-Maxwell-dilaton s... |
1808.01489 | Paolo Marcoccia | P. Marcoccia and G. Montani | Weakly Inhomogeneous models for the Low-Redshift Universe | 12 pages, 6 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze two different algorithms for constructing weakly inhomogeneous
models for the low-redshift Universe, in order to provide a tool for testing
the geodesic dynamics, within the sphere of validity for the Universe
acceleration. We first implement the so-called quasi-isotropic solution in the
late Universe, whe... | [
{
"created": "Sat, 4 Aug 2018 14:55:57 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Feb 2019 14:48:38 GMT",
"version": "v2"
},
{
"created": "Mon, 13 Jul 2020 10:29:01 GMT",
"version": "v3"
}
] | 2020-07-14 | [
[
"Marcoccia",
"P.",
""
],
[
"Montani",
"G.",
""
]
] | We analyze two different algorithms for constructing weakly inhomogeneous models for the low-redshift Universe, in order to provide a tool for testing the geodesic dynamics, within the sphere of validity for the Universe acceleration. We first implement the so-called quasi-isotropic solution in the late Universe, when ... |
2001.00154 | Seiga Sato | Seiga Sato, Kei-ichi Maeda | Stability of Hybrid Higgs Inflation | 9 pages, 9 figures | Phys. Rev. D 101, 103520 (2020) | 10.1103/PhysRevD.101.103520 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hybrid Higgs inflation model is a hybrid type of the so-called Higgs
inflation model with the conventional non-minimal $\xi$ coupling to a scalar
curvature $R$ and new Higgs inflation model with the derivative coupling to the
Einstein curvature tensor $G_{\mu\nu}$. This model can explain all possible
value of the ten... | [
{
"created": "Wed, 1 Jan 2020 07:27:47 GMT",
"version": "v1"
}
] | 2020-05-20 | [
[
"Sato",
"Seiga",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | Hybrid Higgs inflation model is a hybrid type of the so-called Higgs inflation model with the conventional non-minimal $\xi$ coupling to a scalar curvature $R$ and new Higgs inflation model with the derivative coupling to the Einstein curvature tensor $G_{\mu\nu}$. This model can explain all possible value of the tenso... |
2203.13933 | Filipe Mena | Rodrigo D. B. Fontana and Filipe C. Mena | Quasinormal modes and stability of boosted Reissner-Nordstr\"om AdS
black holes | 23 pages, 3 figures | null | 10.1007/JHEP10(2022)047 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We investigate the numerical stability of accelerated AdS black holes against
linear scalar perturbations. In particular, we study the evolution of a probe
non-minimally coupled scalar field on Schwarzschild and Reissner-Nordstr\"om
AdS black holes with small accelerations by computing the quasinormal modes of
the pe... | [
{
"created": "Fri, 25 Mar 2022 22:50:14 GMT",
"version": "v1"
}
] | 2022-10-26 | [
[
"Fontana",
"Rodrigo D. B.",
""
],
[
"Mena",
"Filipe C.",
""
]
] | We investigate the numerical stability of accelerated AdS black holes against linear scalar perturbations. In particular, we study the evolution of a probe non-minimally coupled scalar field on Schwarzschild and Reissner-Nordstr\"om AdS black holes with small accelerations by computing the quasinormal modes of the pert... |
0803.4200 | Anzhong Wang | P. Rocha, A.Y. Miguelote, R. Chan, M.F. da Silva, N.O. Santos, and
Anzhong Wang | Bounded excursion stable gravastars and black holes | Revtex4, 12 figures. Version published in JCAP, 06 (2008) 025 | JCAP 0806:025,2008 | 10.1088/1475-7516/2008/06/025 | null | gr-qc astro-ph hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamical models of prototype gravastars were constructed in order to study
their stability. The models are the Visser-Wiltshire three-layer gravastars, in
which an infinitely thin spherical shell of stiff fluid divides the whole
spacetime into two regions, where the internal region is de Sitter, and the
external is ... | [
{
"created": "Fri, 28 Mar 2008 20:07:52 GMT",
"version": "v1"
},
{
"created": "Wed, 21 May 2008 12:15:37 GMT",
"version": "v2"
},
{
"created": "Sun, 18 Jul 2010 16:18:22 GMT",
"version": "v3"
}
] | 2011-03-28 | [
[
"Rocha",
"P.",
""
],
[
"Miguelote",
"A. Y.",
""
],
[
"Chan",
"R.",
""
],
[
"da Silva",
"M. F.",
""
],
[
"Santos",
"N. O.",
""
],
[
"Wang",
"Anzhong",
""
]
] | Dynamical models of prototype gravastars were constructed in order to study their stability. The models are the Visser-Wiltshire three-layer gravastars, in which an infinitely thin spherical shell of stiff fluid divides the whole spacetime into two regions, where the internal region is de Sitter, and the external is Sc... |
2306.00030 | Hamidreza Simchi | Hamidreza Simchi | Topos Many-Node Theory: Roots, Foundations and Predictions | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Assuming that the first creatures of creation create a network, it is shown
that how the network can be mapped to a topos discrete quantum manifold which
is equipped with both the discrete calculus and the Alexandrov's algebra. We
assign a locale to each nodes of the space-time network and show that in
general, invar... | [
{
"created": "Wed, 31 May 2023 06:29:25 GMT",
"version": "v1"
}
] | 2023-06-02 | [
[
"Simchi",
"Hamidreza",
""
]
] | Assuming that the first creatures of creation create a network, it is shown that how the network can be mapped to a topos discrete quantum manifold which is equipped with both the discrete calculus and the Alexandrov's algebra. We assign a locale to each nodes of the space-time network and show that in general, invaria... |
gr-qc/0205020 | Sayan Kar | Sayan Kar (Physics and CTS, IIT Kharagpur, India) | Asymmetrically warped R=0 braneworlds | 10 pages, no figures, title changed, new results added and an error
corrected | null | null | null | gr-qc hep-th | null | A new family of five dimensional, R=0 braneworlds with asymmetric warp
factors is proposed. Beginning with the invariance of the Ricci scalar for the
general class of asymmetrically warped spacetimes we, subsequently specialise
to the R=0 case. Solutions are obtained by choosing a particular relation
(involving a par... | [
{
"created": "Mon, 6 May 2002 09:19:12 GMT",
"version": "v1"
},
{
"created": "Sat, 28 Sep 2002 09:50:37 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Kar",
"Sayan",
"",
"Physics and CTS, IIT Kharagpur, India"
]
] | A new family of five dimensional, R=0 braneworlds with asymmetric warp factors is proposed. Beginning with the invariance of the Ricci scalar for the general class of asymmetrically warped spacetimes we, subsequently specialise to the R=0 case. Solutions are obtained by choosing a particular relation (involving a param... |
1202.3324 | Matteo Smerlak | Matteo Smerlak | On the inertia of heat | 3 pages | Eur. Phys. J. Plus (2012), 127: 72 | 10.1140/epjp/i2012-12072-4 | null | gr-qc cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Does heat have inertia? This question is at the core of a long-standing
controversy on Eckart's dissipative relativistic hydrodynamics. Here I show
that the troublesome inertial term in Eckart's heat flux arises only if one
insists on defining thermal diffusivity as a spacetime constant. I argue that
this is the most... | [
{
"created": "Wed, 15 Feb 2012 14:44:40 GMT",
"version": "v1"
}
] | 2012-08-24 | [
[
"Smerlak",
"Matteo",
""
]
] | Does heat have inertia? This question is at the core of a long-standing controversy on Eckart's dissipative relativistic hydrodynamics. Here I show that the troublesome inertial term in Eckart's heat flux arises only if one insists on defining thermal diffusivity as a spacetime constant. I argue that this is the most n... |
0905.1506 | Luca Bombelli | Roman Sverdlov, Luca Bombelli | Dynamics for causal sets with matter fields: A Lagrangian-based approach | 25 pages, no figures. Contribution to the Proceedings of DICE2008,
From Quantum Mechanics through Complexity to Space-time: The role of emergent
dynamical structures (Castiglioncello, Italy, Sept. 2008) | J.Phys.Conf.Ser.174:012019,2009 | 10.1088/1742-6596/174/1/012019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a framework for the dynamics of causal sets and coupled matter
fields, which is a simplification and generalization of an approach we recently
proposed. Given a set of fields including the gravitational one, the main step
in implementing our proposal consists in writing their continuum-based action
using a... | [
{
"created": "Sun, 10 May 2009 20:56:29 GMT",
"version": "v1"
}
] | 2009-07-28 | [
[
"Sverdlov",
"Roman",
""
],
[
"Bombelli",
"Luca",
""
]
] | We present a framework for the dynamics of causal sets and coupled matter fields, which is a simplification and generalization of an approach we recently proposed. Given a set of fields including the gravitational one, the main step in implementing our proposal consists in writing their continuum-based action using as ... |
2006.08724 | Roman Sverdlov | Roman Sverdlov | Continuous measurement on a causal set with and without a boundary | 27 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The purpose of this paper is two-fold. First, we would like to get rid of
common assumption that causal set is bounded and attempt to model its scalar
field action under the assumption that it isn't. Secondly, we would like to
propose continuous measurement model in this context.
| [
{
"created": "Mon, 15 Jun 2020 19:46:54 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Jun 2020 08:03:43 GMT",
"version": "v2"
}
] | 2020-06-18 | [
[
"Sverdlov",
"Roman",
""
]
] | The purpose of this paper is two-fold. First, we would like to get rid of common assumption that causal set is bounded and attempt to model its scalar field action under the assumption that it isn't. Secondly, we would like to propose continuous measurement model in this context. |
1510.06930 | David Langlois | David Langlois, Karim Noui | Degenerate higher derivative theories beyond Horndeski: evading the
Ostrogradski instability | 19 pages, no figure | JCAP 1602 (2016) 02, 034 | 10.1088/1475-7516/2016/02/034 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Theories with higher order time derivatives generically suffer from
ghost-like instabilities, known as Ostrogradski instabilities. This fate can be
avoided by considering "degenerate" Lagrangians, whose kinetic matrix cannot be
inverted, thus leading to constraints between canonical variables and a reduced
number of ... | [
{
"created": "Fri, 23 Oct 2015 13:29:17 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Mar 2016 12:06:12 GMT",
"version": "v2"
}
] | 2016-03-07 | [
[
"Langlois",
"David",
""
],
[
"Noui",
"Karim",
""
]
] | Theories with higher order time derivatives generically suffer from ghost-like instabilities, known as Ostrogradski instabilities. This fate can be avoided by considering "degenerate" Lagrangians, whose kinetic matrix cannot be inverted, thus leading to constraints between canonical variables and a reduced number of ph... |
1903.05402 | T. P. Singh | Tejinder P. Singh | Proposal for a new quantum theory of gravity | v2: 32 pages, 1 figure, Section I borrows some text (overview of
trace dynamics) from arXiv:1701.09132v1 [quant-ph], revised in response to
reviewer comments: list of revisions appended after bibliography; accepted
for publication in Zeitschrift fur Naturforschung | Z. Naturforsch. A 74 (2019) 617 | 10.1515/zna-2019-0079 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We recall a classical theory of torsion gravity with an asymmetric metric,
sourced by a Nambu-Goto + Kalb-Ramond string . We explain why this is a
significant gravitational theory, and in what sense classical general
relativity is an approximation to it. We propose that a non-commutative
generalisation of this theory... | [
{
"created": "Wed, 13 Mar 2019 10:30:08 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Apr 2019 12:27:31 GMT",
"version": "v2"
}
] | 2019-07-01 | [
[
"Singh",
"Tejinder P.",
""
]
] | We recall a classical theory of torsion gravity with an asymmetric metric, sourced by a Nambu-Goto + Kalb-Ramond string . We explain why this is a significant gravitational theory, and in what sense classical general relativity is an approximation to it. We propose that a non-commutative generalisation of this theory (... |
1506.01786 | Ahmad Sheykhi | A. Sheykhi and A. Kazemi | Higher dimensional dilaton black holes in the presence of exponential
nonlinear electrodynamics | 16 pages, 12 figs. arXiv admin note: substantial text overlap with
arXiv:1504.04009 | Phys. Rev. D 90 (2014) 044028 | 10.1103/PhysRevD.90.044028 | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | We examine the higher dimensional action in which gravity is coupled to the
exponential nonlinear electrodynamic and a scalar dilaton field. We construct a
new class of $n$-dimensional static and spherically symmetric black hole
solutions of this theory in the presence of the dilaton potential with two
Liouville-type... | [
{
"created": "Fri, 5 Jun 2015 05:53:43 GMT",
"version": "v1"
}
] | 2015-06-08 | [
[
"Sheykhi",
"A.",
""
],
[
"Kazemi",
"A.",
""
]
] | We examine the higher dimensional action in which gravity is coupled to the exponential nonlinear electrodynamic and a scalar dilaton field. We construct a new class of $n$-dimensional static and spherically symmetric black hole solutions of this theory in the presence of the dilaton potential with two Liouville-type t... |
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