id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0403043 | George Japaridze | W. D. Flanders and G. S. Japaridze | Photon deflection and precession of the periastron in terms of spatial
gravitational fields | null | Class.Quant.Grav. 21 (2004) 1825-1831 | 10.1088/0264-9381/21/7/007 | null | gr-qc hep-th | null | We show that a Maxwell-like system of equations for spatial gravitational
fields $\bf g$ and $\bf B$ (latter being the analogy of a magnetic field),
modified to include an extra term for the $\bf B$ field in the expression for
force, leads to the correct values for the photon deflection angle and for the
precession o... | [
{
"created": "Thu, 11 Mar 2004 01:04:04 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Flanders",
"W. D.",
""
],
[
"Japaridze",
"G. S.",
""
]
] | We show that a Maxwell-like system of equations for spatial gravitational fields $\bf g$ and $\bf B$ (latter being the analogy of a magnetic field), modified to include an extra term for the $\bf B$ field in the expression for force, leads to the correct values for the photon deflection angle and for the precession of ... |
gr-qc/0308001 | Gregory M. Harry | Michael J. Mortonson, Christophoros C. Vassiliou, David J. Ottaway,
David H. Shoemaker, Gregory M. Harry | Effects of electrical charging on the mechanical Q of a fused silica
disk | submitted to Review of Scientific Instruments | Rev.Sci.Instrum.74:4840-4845,2003 | 10.1063/1.1619544 | null | gr-qc | null | We report on the effects of an electrical charge on mechanical loss of a
fused silica disk. A degradation of Q was seen that correlated with charge on
the surface of the sample. We examine a number of models for charge damping,
including eddy current damping and loss due to polarization. We conclude that
rubbing fric... | [
{
"created": "Thu, 31 Jul 2003 21:40:18 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Mortonson",
"Michael J.",
""
],
[
"Vassiliou",
"Christophoros C.",
""
],
[
"Ottaway",
"David J.",
""
],
[
"Shoemaker",
"David H.",
""
],
[
"Harry",
"Gregory M.",
""
]
] | We report on the effects of an electrical charge on mechanical loss of a fused silica disk. A degradation of Q was seen that correlated with charge on the surface of the sample. We examine a number of models for charge damping, including eddy current damping and loss due to polarization. We conclude that rubbing fricti... |
0910.0839 | T. Padmanabhan | T. Padmanabhan | A Dialogue on the Nature of Gravity | Based on lectures given in several conferences (including VR lecture
of IAGRG); results have been updated and format has been changed to one
involving a dialogue; version 2: discussion significantly extended;
references added; 3 figures; 37 pages | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I describe the conceptual and mathematical basis of an approach which
describes gravity as an emergent phenomenon. Combining principle of equivalence
and principle of general covariance with known properties of local Rindler
horizons, perceived by observers accelerated with respect to local inertial
frames, one can p... | [
{
"created": "Mon, 5 Oct 2009 20:00:16 GMT",
"version": "v1"
},
{
"created": "Sun, 22 Nov 2009 10:28:12 GMT",
"version": "v2"
}
] | 2009-11-22 | [
[
"Padmanabhan",
"T.",
""
]
] | I describe the conceptual and mathematical basis of an approach which describes gravity as an emergent phenomenon. Combining principle of equivalence and principle of general covariance with known properties of local Rindler horizons, perceived by observers accelerated with respect to local inertial frames, one can pro... |
1003.0614 | Mohammad Nouri-Zonoz | B. Nazari and M. Nouri-Zonoz | Casimir effect in a weak gravitational field and the spacetime index of
refraction | 11 pages, RevTex, typos corrected (combined with arXiv:0904.2904
published in PRD) | Phys.Rev.D82:044047,2010 | 10.1103/PhysRevD.85.044060 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent paper [arXiv:0904.2904] using a conjecture it is shown how one
can calculate the effect of a weak stationary gravitational field on vacuum
energy in the context of Casimir effect in an external gravitational field
treated in 1+3 formulation of spacetime decomposition.. In this article,
employing quntum fi... | [
{
"created": "Tue, 2 Mar 2010 15:19:28 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Oct 2010 09:01:14 GMT",
"version": "v2"
}
] | 2013-05-30 | [
[
"Nazari",
"B.",
""
],
[
"Nouri-Zonoz",
"M.",
""
]
] | In a recent paper [arXiv:0904.2904] using a conjecture it is shown how one can calculate the effect of a weak stationary gravitational field on vacuum energy in the context of Casimir effect in an external gravitational field treated in 1+3 formulation of spacetime decomposition.. In this article, employing quntum fiel... |
1702.05915 | Matt Visser | Prado Martin-Moruno (Universidad Complutense de Madrid) and Matt
Visser (Victoria University of Wellington) | Classical and semi-classical energy conditions | V1: 25 pages. Draft chapter, on which the related chapter of the book
"Wormholes, Warp Drives and Energy Conditions" (to be published by Springer),
will be based. V2: typos fixed. V3: small typo fixed | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The standard energy conditions of classical general relativity are (mostly)
linear in the stress-energy tensor, and have clear physical interpretations in
terms of geodesic focussing, but suffer the significant drawback that they are
often violated by semi-classical quantum effects. In contrast, it is possible
to dev... | [
{
"created": "Mon, 20 Feb 2017 10:13:45 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Mar 2017 09:11:51 GMT",
"version": "v2"
},
{
"created": "Wed, 29 Mar 2017 08:52:01 GMT",
"version": "v3"
}
] | 2017-03-30 | [
[
"Martin-Moruno",
"Prado",
"",
"Universidad Complutense de Madrid"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | The standard energy conditions of classical general relativity are (mostly) linear in the stress-energy tensor, and have clear physical interpretations in terms of geodesic focussing, but suffer the significant drawback that they are often violated by semi-classical quantum effects. In contrast, it is possible to devel... |
gr-qc/0108018 | Edward N. Glass | E.N. Glass (Department of Physics, University of Michigan, Ann Arbor,
Michgan) | A Conserved Bach Current | to appear in Class. Quantum Grav | Class.Quant.Grav. 18 (2001) 3935-3942 | 10.1088/0264-9381/18/18/312 | MCTP-01-35 | gr-qc | null | The Bach tensor and a vector which generates conformal symmetries allow a
conserved four-current to be defined. The Bach four-current gives rise to a
quasilocal two-surface expression for power per luminosity distance in the
Vaidya exterior of collapsing fluid interiors. This is interpreted in terms of
entropy genera... | [
{
"created": "Mon, 6 Aug 2001 01:40:19 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Glass",
"E. N.",
"",
"Department of Physics, University of Michigan, Ann Arbor,\n Michgan"
]
] | The Bach tensor and a vector which generates conformal symmetries allow a conserved four-current to be defined. The Bach four-current gives rise to a quasilocal two-surface expression for power per luminosity distance in the Vaidya exterior of collapsing fluid interiors. This is interpreted in terms of entropy generati... |
gr-qc/0206074 | Lorenzo Iorio | Lorenzo Iorio | On a new observable for measuring the Lense-Thirring effect with
Satellite Laser Ranging | LaTex2e, 14 pages, 1 table, no figures. Some changes and additions to
the abstract, Introduction and Conclusions. References updated, typos
corrected. Equation corrected. To appear in General Relativity and
Gravitation | Gen.Rel.Grav. 35 (2003) 1583-1595 | 10.1023/A:1025727001141 | null | gr-qc astro-ph physics.space-ph | null | In this paper we present a rather extensive error budget for the difference
of the perigees of a pair of supplementary SLR satellites aimed to the
detection of the Lense-Thirring effect.
| [
{
"created": "Tue, 25 Jun 2002 07:47:56 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Sep 2002 14:42:33 GMT",
"version": "v2"
},
{
"created": "Wed, 2 Apr 2003 07:36:53 GMT",
"version": "v3"
},
{
"created": "Wed, 16 Apr 2003 13:07:28 GMT",
"version": "v4"
},
{
"cr... | 2007-11-12 | [
[
"Iorio",
"Lorenzo",
""
]
] | In this paper we present a rather extensive error budget for the difference of the perigees of a pair of supplementary SLR satellites aimed to the detection of the Lense-Thirring effect. |
1108.4740 | Cosimo Bambi | Cosimo Bambi, Enrico Barausse | The final stages of accretion onto non-Kerr compact objects | 13 pages, 4 figures. v2: some typos corrected | Phys.Rev.D84:084034,2011 | 10.1103/PhysRevD.84.084034 | IPMU11-0132; LMU-ASC-24-12 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The $5 - 20 M_\odot$ dark objects in X-ray binary systems and the $10^5 -
10^9 M_\odot$ dark objects in galactic nuclei are currently thought to be the
Kerr black holes predicted by General Relativity. However, direct observational
evidence for this identification is still elusive, and the only viable approach
to con... | [
{
"created": "Wed, 24 Aug 2011 02:37:49 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Oct 2011 14:55:21 GMT",
"version": "v2"
}
] | 2012-04-09 | [
[
"Bambi",
"Cosimo",
""
],
[
"Barausse",
"Enrico",
""
]
] | The $5 - 20 M_\odot$ dark objects in X-ray binary systems and the $10^5 - 10^9 M_\odot$ dark objects in galactic nuclei are currently thought to be the Kerr black holes predicted by General Relativity. However, direct observational evidence for this identification is still elusive, and the only viable approach to confi... |
gr-qc/0310020 | Mikhail Vysotsky | S.I. Blinnikov, L.B. Okun, M.I. Vysotsky (ITEP, Moscow, Russia) | Critical velocities $c/\sqrt 3$ and $c/\sqrt 2$ in general theory of
relativity | 13 pages | Phys.Usp.46:1099-1103,2003; Usp.Fiz.Nauk 46:1131-1136,2003 | 10.1070/PU2003v046n10ABEH001661 | null | gr-qc hep-ex hep-ph | null | We consider a few thought experiments of radial motion of massive particles
in the gravitational fields outside and inside various celestial bodies: Earth,
Sun, black hole. All other interactions except gravity are disregarded. For the
outside motion there exists a critical value of coordinate velocity ${\rm v}_c
= c... | [
{
"created": "Fri, 3 Oct 2003 13:23:26 GMT",
"version": "v1"
}
] | 2010-12-17 | [
[
"Blinnikov",
"S. I.",
"",
"ITEP, Moscow, Russia"
],
[
"Okun",
"L. B.",
"",
"ITEP, Moscow, Russia"
],
[
"Vysotsky",
"M. I.",
"",
"ITEP, Moscow, Russia"
]
] | We consider a few thought experiments of radial motion of massive particles in the gravitational fields outside and inside various celestial bodies: Earth, Sun, black hole. All other interactions except gravity are disregarded. For the outside motion there exists a critical value of coordinate velocity ${\rm v}_c = c/\... |
gr-qc/9809012 | Kayll Lake | Kevin Santosuosso, Denis Pollney, Nicos Pelavas, Peter Musgrave, Kayll
Lake | Invariants of the Riemann tensor for Class B Warped Product Spacetimes | 19 pages. To appear in Computer Physics Communications Thematic Issue
on "Computer Algebra in Physics Research". Uses Maple2e.sty | Comput.Phys.Commun. 115 (1998) 381-394 | 10.1016/S0010-4655(98)00134-9 | null | gr-qc hep-th | null | We use the computer algebra system \textit{GRTensorII} to examine invariants
polynomial in the Riemann tensor for class $B$ warped product spacetimes -
those which can be decomposed into the coupled product of two 2-dimensional
spaces, one Lorentzian and one Riemannian, subject to the separability of the
coupling: $d... | [
{
"created": "Wed, 2 Sep 1998 18:05:07 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Santosuosso",
"Kevin",
""
],
[
"Pollney",
"Denis",
""
],
[
"Pelavas",
"Nicos",
""
],
[
"Musgrave",
"Peter",
""
],
[
"Lake",
"Kayll",
""
]
] | We use the computer algebra system \textit{GRTensorII} to examine invariants polynomial in the Riemann tensor for class $B$ warped product spacetimes - those which can be decomposed into the coupled product of two 2-dimensional spaces, one Lorentzian and one Riemannian, subject to the separability of the coupling: $ds^... |
gr-qc/0506102 | J. Brian Pitts | J. Brian Pitts | Absolute Objects and Counterexamples: Jones-Geroch Dust, Torretti
Constant Curvature, Tetrad-Spinor, and Scalar Density | Minor editing, small content additions, added references. Forthcoming
in_Studies in History and Philosophy of Modern Physics_, June 2006 | Studies in History and Philosophy of Modern Physics 37 (2006)
347-371 | 10.1016/j.shpsb.2005.11.004 | null | gr-qc hep-th physics.hist-ph | null | James L. Anderson analyzed the novelty of Einstein's theory of gravity as its
lack of "absolute objects." Michael Friedman's related work has been criticized
by Roger Jones and Robert Geroch for implausibly admitting as absolute the
timelike 4-velocity field of dust in cosmological models in Einstein's theory.
Using ... | [
{
"created": "Mon, 20 Jun 2005 15:30:14 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Sep 2005 13:24:20 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Jan 2006 16:59:07 GMT",
"version": "v3"
},
{
"created": "Tue, 28 Feb 2006 02:49:40 GMT",
"version": "v4"
}
] | 2016-03-21 | [
[
"Pitts",
"J. Brian",
""
]
] | James L. Anderson analyzed the novelty of Einstein's theory of gravity as its lack of "absolute objects." Michael Friedman's related work has been criticized by Roger Jones and Robert Geroch for implausibly admitting as absolute the timelike 4-velocity field of dust in cosmological models in Einstein's theory. Using th... |
gr-qc/9310011 | P. Suntharothok-Priesmeyer | L. P. Grishchuk | Cosmological Rotation of Quantum-Mechanical Origin and Anisotropy of the
Microwave Background | WUGRAV 93-6, Phys. Rev. D (in press), 33 pages | Phys.Rev.D48:5581-5593,1993 | 10.1103/PhysRevD.48.5581 | null | gr-qc | null | It is shown that rotational cosmological perturbations can be generated in
the early Universe, similarly to gravitational waves. The generating mechanism
is quantum-mechanical in its nature, and the created perturbations should now
be placed in squeezed vacuum quantum states. The physical conditions under
which the p... | [
{
"created": "Wed, 6 Oct 1993 20:26:34 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Grishchuk",
"L. P.",
""
]
] | It is shown that rotational cosmological perturbations can be generated in the early Universe, similarly to gravitational waves. The generating mechanism is quantum-mechanical in its nature, and the created perturbations should now be placed in squeezed vacuum quantum states. The physical conditions under which the phe... |
1111.6247 | Christian Boehmer | Christian G. Boehmer, Nyein Chan, Ruth Lazkoz | Dynamics of dark energy models and centre manifolds | 11 pages, 1 figure | Phys.Lett. B714 (2012) 11-17 | 10.1016/j.physletb.2012.06.064 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse dark energy models where self-interacting three-forms or phantom
fields drive the accelerated expansion of the Universe. The dynamics of such
models is often studied by rewriting the cosmological field equations in the
form of a system of autonomous differential equations, or simply a dynamical
system. Pro... | [
{
"created": "Sun, 27 Nov 2011 11:25:14 GMT",
"version": "v1"
}
] | 2012-12-11 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Chan",
"Nyein",
""
],
[
"Lazkoz",
"Ruth",
""
]
] | We analyse dark energy models where self-interacting three-forms or phantom fields drive the accelerated expansion of the Universe. The dynamics of such models is often studied by rewriting the cosmological field equations in the form of a system of autonomous differential equations, or simply a dynamical system. Prope... |
gr-qc/0308005 | S. Antoci | S. Antoci and D.-E. Liebscher | The topology of Schwarzschild's solution and the Kruskal metric | 12 pages, 2 figures, misprints corrected | null | null | null | gr-qc | null | Kruskal's extension solves the problem of the arrow of time of the
``Schwarzschild solution'' through combining two Hilbert manifolds by a
singular coordinate transformation. We discuss the implications for the
singularity problem and the definition of the mass point.
The analogy set by Rindler between the Kruskal ... | [
{
"created": "Fri, 1 Aug 2003 15:07:33 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Aug 2003 09:20:24 GMT",
"version": "v2"
},
{
"created": "Mon, 26 Sep 2005 09:09:11 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Antoci",
"S.",
""
],
[
"Liebscher",
"D. -E.",
""
]
] | Kruskal's extension solves the problem of the arrow of time of the ``Schwarzschild solution'' through combining two Hilbert manifolds by a singular coordinate transformation. We discuss the implications for the singularity problem and the definition of the mass point. The analogy set by Rindler between the Kruskal metr... |
2208.02280 | Leonardo Chataignier | Leonardo Chataignier, Alexander Yu. Kamenshchik, Alessandro Tronconi,
Giovanni Venturi | Regular black holes, universes without singularities, and phantom-scalar
field transitions | slightly expanded, with updated references and conceptual
clarifications. Matches the published version | null | 10.1103/PhysRevD.107.023508 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a procedure of elimination of cosmological singularities similar
to that suggested in the recent paper by Simpson and Visser for the
construction of regular black holes. It is shown that by imposing a
non-singular cosmological evolution with a bounce in a flat Friedmann universe
filled with a minimally co... | [
{
"created": "Wed, 3 Aug 2022 18:03:56 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Jan 2023 20:25:15 GMT",
"version": "v2"
}
] | 2023-01-10 | [
[
"Chataignier",
"Leonardo",
""
],
[
"Kamenshchik",
"Alexander Yu.",
""
],
[
"Tronconi",
"Alessandro",
""
],
[
"Venturi",
"Giovanni",
""
]
] | We consider a procedure of elimination of cosmological singularities similar to that suggested in the recent paper by Simpson and Visser for the construction of regular black holes. It is shown that by imposing a non-singular cosmological evolution with a bounce in a flat Friedmann universe filled with a minimally coup... |
1001.4857 | Shan Gao | Shan Gao | On Di\'osi-Penrose criterion of gravity-induced quantum collapse | 5 pages, no figures | Int. J. Theor.Phys., 49, 849-853, 2010 | 10.1007/s10773-010-0266-9 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the Di\'osi-Penrose criterion of gravity-induced quantum
collapse may be inconsistent with the discreteness of space-time, which is
generally considered as an indispensable element in a complete theory of
quantum gravity. Moreover, the analysis also suggests that the discreteness of
space-time may re... | [
{
"created": "Wed, 27 Jan 2010 05:42:29 GMT",
"version": "v1"
},
{
"created": "Sat, 16 Jul 2011 11:41:29 GMT",
"version": "v2"
}
] | 2011-07-19 | [
[
"Gao",
"Shan",
""
]
] | It is shown that the Di\'osi-Penrose criterion of gravity-induced quantum collapse may be inconsistent with the discreteness of space-time, which is generally considered as an indispensable element in a complete theory of quantum gravity. Moreover, the analysis also suggests that the discreteness of space-time may resu... |
1301.3234 | Chen Songbai | Songbai Chen, Xiaofang Liu, Changqing Liu | $P-V$ criticality of AdS black hole in $f(R)$ gravity | 9 pages, 3 figures | Chin. Phys. Lett. 30(6), 060401 (2013) | 10.1088/0256-307X/30/6/060401 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study thermodynamics of a charged AdS black hole in the special $f(R)$
correction with the constant Ricci scalar curvature. Our results show that the
the $f(R)$ correction influences the Gibbs free energy and the phase transition
of system. The ratio $\rho_c$ occurred at the critical point increases
monotonically ... | [
{
"created": "Tue, 15 Jan 2013 06:33:02 GMT",
"version": "v1"
},
{
"created": "Fri, 31 May 2013 03:01:35 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Chen",
"Songbai",
""
],
[
"Liu",
"Xiaofang",
""
],
[
"Liu",
"Changqing",
""
]
] | We study thermodynamics of a charged AdS black hole in the special $f(R)$ correction with the constant Ricci scalar curvature. Our results show that the the $f(R)$ correction influences the Gibbs free energy and the phase transition of system. The ratio $\rho_c$ occurred at the critical point increases monotonically wi... |
0708.2069 | Friedrich W. Hehl | Friedrich W. Hehl, Yuri N. Obukhov, Jean-Pierre Rivera, Hans Schmid | Relativistic analysis of magnetoelectric crystals: extracting a new
4-dimensional P odd and T odd pseudoscalar from Cr_2 O_3 data | 6 pages latex, 3 figures, accepted by Physics Letters A | null | 10.1016/j.physleta.2007.08.069 | null | gr-qc hep-th physics.class-ph | null | Earlier, the linear magnetoelectric effect of chromium sesquioxide Cr_2 O_3
has been determined experimentally as a function of temperature. One measures
the electric field-induced magnetization on Cr_2 O_3 crystals or the magnetic
field-induced polarization. From the magnetoelectric moduli of Cr_2 O_3 we
extract a 4... | [
{
"created": "Wed, 15 Aug 2007 16:45:52 GMT",
"version": "v1"
}
] | 2009-11-13 | [
[
"Hehl",
"Friedrich W.",
""
],
[
"Obukhov",
"Yuri N.",
""
],
[
"Rivera",
"Jean-Pierre",
""
],
[
"Schmid",
"Hans",
""
]
] | Earlier, the linear magnetoelectric effect of chromium sesquioxide Cr_2 O_3 has been determined experimentally as a function of temperature. One measures the electric field-induced magnetization on Cr_2 O_3 crystals or the magnetic field-induced polarization. From the magnetoelectric moduli of Cr_2 O_3 we extract a 4-d... |
1807.03068 | Sasa Ilijic | Sasa Ilijic and Marko Sossich | Compact stars in $f(T)$ extended theory of gravity | LaTeX, 12 pages, 3 figures, v2: references added | Phys. Rev. D 98, 064047 (2018) | 10.1103/PhysRevD.98.064047 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider static spherically symmetric self-gravitating configurations of
the perfect fluid within the framework of the torsion-based extended theory of
gravity. In particular, we use the covariant formulation of $f(T)$ gravity with
$f(T) = T + \frac{\alpha}{2} T^2$, and for the fluid we assume the polytropic
equat... | [
{
"created": "Mon, 9 Jul 2018 12:18:14 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Oct 2018 08:49:16 GMT",
"version": "v2"
}
] | 2018-10-03 | [
[
"Ilijic",
"Sasa",
""
],
[
"Sossich",
"Marko",
""
]
] | We consider static spherically symmetric self-gravitating configurations of the perfect fluid within the framework of the torsion-based extended theory of gravity. In particular, we use the covariant formulation of $f(T)$ gravity with $f(T) = T + \frac{\alpha}{2} T^2$, and for the fluid we assume the polytropic equatio... |
1310.2171 | Mariano Hermida de La Rica | Mariano Hermida de La Rica | Teleparallel Darkness | This article draws heavily on arXiv:0905.4026; This is a major
revision of the paper. Some clarifications and discussions have been added,
specially on the "qualitative" prediction of the amount of dark matter to be
expected according to the theory | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | First a review of Teleparallel theory is done with special emphasis in the
derivation of conservation equations within this theory and in particular of
energy-momentum conservation. Given that we are allowed to speak about the
existence of negative energy, the question is that in its interaction with
matter, we need ... | [
{
"created": "Tue, 8 Oct 2013 15:17:21 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Feb 2014 00:36:42 GMT",
"version": "v2"
}
] | 2014-02-18 | [
[
"de La Rica",
"Mariano Hermida",
""
]
] | First a review of Teleparallel theory is done with special emphasis in the derivation of conservation equations within this theory and in particular of energy-momentum conservation. Given that we are allowed to speak about the existence of negative energy, the question is that in its interaction with matter, we need no... |
gr-qc/0505125 | Eugen Radu | J.J. van der Bij and Eugen Radu | Inflationary solutions with a five dimensional complex scalar field | 11 pages, 2 figures; v2: section 2 expanded; discussion on multiple
modes added; some typos corrected | Mod.Phys.Lett. A21 (2006) 409-420 | 10.1142/S0217732306019700 | Freiburg-THEP-05/04 | gr-qc | null | We discuss inflationary solutions of the coupled Einstein-Klein-Gordon
equations for a complex field in a five dimensional spacetime with a compact
$x^5$-dimension. As a new feature, the scalar field contains a dependence on
the extra dimension of the form $\exp(i m x^5) $, corresponding to Kaluza-Klein
excited modes... | [
{
"created": "Wed, 25 May 2005 15:31:20 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Jan 2006 13:43:08 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"van der Bij",
"J. J.",
""
],
[
"Radu",
"Eugen",
""
]
] | We discuss inflationary solutions of the coupled Einstein-Klein-Gordon equations for a complex field in a five dimensional spacetime with a compact $x^5$-dimension. As a new feature, the scalar field contains a dependence on the extra dimension of the form $\exp(i m x^5) $, corresponding to Kaluza-Klein excited modes. ... |
0901.3074 | Yuri Shtanov | Yuri Shtanov, Varun Sahni, Arman Shafieloo, Alexey Toporensky | Induced cosmological constant and other features of asymmetric brane
embedding | 17 pages, 4 figures. New results and two figures discussing transient
acceleration are included. Version accepted for publication in JCAP | JCAP 04 (2009) 023 | 10.1088/1475-7516/2009/04/023 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the cosmological properties of an "induced gravity" brane
scenario in the absence of mirror symmetry with respect to the brane. We find
that brane evolution can proceed along one of four distinct branches. By
contrast, when mirror symmetry is imposed, only two branches exist, one of
which represents th... | [
{
"created": "Tue, 20 Jan 2009 15:16:27 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Apr 2009 21:54:20 GMT",
"version": "v2"
}
] | 2009-04-24 | [
[
"Shtanov",
"Yuri",
""
],
[
"Sahni",
"Varun",
""
],
[
"Shafieloo",
"Arman",
""
],
[
"Toporensky",
"Alexey",
""
]
] | We investigate the cosmological properties of an "induced gravity" brane scenario in the absence of mirror symmetry with respect to the brane. We find that brane evolution can proceed along one of four distinct branches. By contrast, when mirror symmetry is imposed, only two branches exist, one of which represents the ... |
1406.1016 | Istvan Racz | Istv\'an R\'acz | Is the Bianchi identity always hyperbolic? | 14 pages, no figures, the published version | Class. Quantum Grav. 31 (2014) 155004 | 10.1088/0264-9381/31/15/155004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider $n+1$ dimensional smooth Riemannian and Lorentzian spaces
satisfying Einstein's equations. The base manifold is assumed to be smoothly
foliated by a one-parameter family of hypersurfaces. In both cases---likewise
it is usually done in the Lorentzian case---Einstein's equations may be split
into `Hamiltoni... | [
{
"created": "Wed, 4 Jun 2014 12:00:57 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Nov 2014 18:44:14 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Rácz",
"István",
""
]
] | We consider $n+1$ dimensional smooth Riemannian and Lorentzian spaces satisfying Einstein's equations. The base manifold is assumed to be smoothly foliated by a one-parameter family of hypersurfaces. In both cases---likewise it is usually done in the Lorentzian case---Einstein's equations may be split into `Hamiltonian... |
1408.5179 | Henry Stoltenberg | Henry Stoltenberg and Andreas Albrecht | No Firewalls or Information Problem for Black Holes Entangled with Large
Systems | 8 pages. V2: We have revised our discussion of the applicability of
our results in realistic cosmologies in Section 5. Also, typos fixed and
citations added. Our technical results are unchanged. V3: Final version
accepted for publication in PRD. Additional references added. No other
changes | null | 10.1103/PhysRevD.91.024004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss how under certain conditions the black hole information puzzle and
the (related) arguments that firewalls are a typical feature of black holes can
break down. We first review the arguments of AMPS favoring firewalls, focusing
on entanglements in a simple toy model for a black hole and the Hawking
radiation... | [
{
"created": "Fri, 22 Aug 2014 00:45:46 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Oct 2014 19:09:28 GMT",
"version": "v2"
},
{
"created": "Sun, 18 Jan 2015 03:51:11 GMT",
"version": "v3"
}
] | 2015-06-22 | [
[
"Stoltenberg",
"Henry",
""
],
[
"Albrecht",
"Andreas",
""
]
] | We discuss how under certain conditions the black hole information puzzle and the (related) arguments that firewalls are a typical feature of black holes can break down. We first review the arguments of AMPS favoring firewalls, focusing on entanglements in a simple toy model for a black hole and the Hawking radiation. ... |
gr-qc/0310108 | Gyorgy Szondy | Gy. Szondy | Mathematical Equivalency of the Ether Based Gavitation Theory of Janossy
and General Relativity | 4 pages, reference to Smolin was added | null | null | null | gr-qc | null | "There are several interpretations and approaches to relativity. All of them
are characterized by the fact that none of them is accepted by physicists
without doubts, even the Einsteinian General Relativity! Only those theories
can get into the spotlight that predicts something that is different from
predictions of o... | [
{
"created": "Thu, 23 Oct 2003 18:23:15 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Szondy",
"Gy.",
""
]
] | "There are several interpretations and approaches to relativity. All of them are characterized by the fact that none of them is accepted by physicists without doubts, even the Einsteinian General Relativity! Only those theories can get into the spotlight that predicts something that is different from predictions of oth... |
2009.09999 | Elias Okon | Javier Berjon, Elias Okon and Daniel Sudarsky | Critical review of prevailing explanations for the emergence of
classicality in cosmology | 32 pages. Published version with additional section containing our
reply to a note added in arXiv:2004.10684 in response to an earlier version
of this paper | Phys. Rev. D 103, 043521 (2021) | 10.1103/PhysRevD.103.043521 | null | gr-qc physics.hist-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There have been recent attempts at justifying, from first principles, and
within the standard framework, the emergence of classical behavior in the
post-inflationary cosmological context. Accounting for this emergence is an
important issue, as it underlies the extraordinary empirical success of our
current understand... | [
{
"created": "Mon, 21 Sep 2020 16:27:19 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Nov 2020 01:45:13 GMT",
"version": "v2"
},
{
"created": "Mon, 15 Feb 2021 16:25:48 GMT",
"version": "v3"
}
] | 2021-02-24 | [
[
"Berjon",
"Javier",
""
],
[
"Okon",
"Elias",
""
],
[
"Sudarsky",
"Daniel",
""
]
] | There have been recent attempts at justifying, from first principles, and within the standard framework, the emergence of classical behavior in the post-inflationary cosmological context. Accounting for this emergence is an important issue, as it underlies the extraordinary empirical success of our current understandin... |
1906.08674 | Sunandan Gangopadhyay | Rituparna Mandal, Sunandan Gangopadhyay, Amitabha Lahiri | Cosmology of Bianchi type-I metric using renormalization group approach
for quantum gravity | 20 pages Latex, manuscript revised and comments added | Class. Quantum Grav. 37 (2020) 065012 | 10.1088/1361-6382/ab7287 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the anisotropic Bianchi type-I cosmological model at late times,
taking into account quantum gravitational corrections in the formalism of the
exact renormalization group flow of the effective average action for gravity.
The cosmological evolution equations are derived by including the scale
dependence of Ne... | [
{
"created": "Wed, 19 Jun 2019 11:31:06 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Feb 2020 04:16:00 GMT",
"version": "v2"
}
] | 2020-02-24 | [
[
"Mandal",
"Rituparna",
""
],
[
"Gangopadhyay",
"Sunandan",
""
],
[
"Lahiri",
"Amitabha",
""
]
] | We study the anisotropic Bianchi type-I cosmological model at late times, taking into account quantum gravitational corrections in the formalism of the exact renormalization group flow of the effective average action for gravity. The cosmological evolution equations are derived by including the scale dependence of Newt... |
1408.3566 | William Kelly | William R. Kelly and Aron C. Wall | A holographic proof of the averaged null energy condition | 13 pages, 1 figure. v4: corrected an error in the proof, results
remain unchanged, v3: added additional references along with minor editorial
changes, v2: added additional references and acknowledgments | Phys. Rev. D 90, 106003 (2014) | 10.1103/PhysRevD.90.106003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The averaged null energy conditions (ANEC) states that, along a complete null
curve, the negative energy fluctuations of a quantum field must be balanced by
positive energy fluctuations. We use the AdS/CFT correspondence to prove the
ANEC for a class of strongly coupled conformal field theories in flat
spacetime. A v... | [
{
"created": "Fri, 15 Aug 2014 15:34:53 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Sep 2014 21:41:54 GMT",
"version": "v2"
},
{
"created": "Mon, 3 Nov 2014 18:41:46 GMT",
"version": "v3"
},
{
"created": "Sun, 22 Feb 2015 17:49:31 GMT",
"version": "v4"
}
] | 2015-02-24 | [
[
"Kelly",
"William R.",
""
],
[
"Wall",
"Aron C.",
""
]
] | The averaged null energy conditions (ANEC) states that, along a complete null curve, the negative energy fluctuations of a quantum field must be balanced by positive energy fluctuations. We use the AdS/CFT correspondence to prove the ANEC for a class of strongly coupled conformal field theories in flat spacetime. A vio... |
gr-qc/0703056 | Eyo Ita III | Eyo Eyo Ita III | Finite states in four dimensional quantum gravity. The isotropic
minisuperspace Asktekar--Klein--Gordon model | 26 pages. Accepted for publication by Class. Quantum Grav. journal | Class. Quantum Grav. 25 (2008) 125002 (19pp) | 10.1088/0264-9381/25/12/125002 | null | gr-qc | null | In this paper we construct the generalized Kodama state for the case of a
Klein--Gordon scalar field coupled to Ashtekar variables in isotropic
minisuperspace by a new method. The criterion for finiteness of the state stems
from a minisuperspace reduction of the quantized full theory, rather than the
conventional tec... | [
{
"created": "Thu, 8 Mar 2007 12:07:32 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Oct 2007 23:51:16 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Nov 2007 08:11:13 GMT",
"version": "v3"
},
{
"created": "Mon, 11 Feb 2008 20:52:45 GMT",
"version": "v4"
},
{
"cre... | 2015-06-25 | [
[
"Ita",
"Eyo Eyo",
"III"
]
] | In this paper we construct the generalized Kodama state for the case of a Klein--Gordon scalar field coupled to Ashtekar variables in isotropic minisuperspace by a new method. The criterion for finiteness of the state stems from a minisuperspace reduction of the quantized full theory, rather than the conventional techn... |
2402.03184 | Israel Quiros | Israel Quiros | A theorem on local scale invariance | 9 pages, no figures | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a general proof that the only static and spherically symmetric,
vacuum solutions of the local scale invariant conformally coupled scalar theory
of gravity, are conformal to the Schwarzschild-de Sitter solution. In this
context the physical relevance of local scale symmetry is discussed.
| [
{
"created": "Mon, 5 Feb 2024 16:48:46 GMT",
"version": "v1"
}
] | 2024-02-06 | [
[
"Quiros",
"Israel",
""
]
] | We give a general proof that the only static and spherically symmetric, vacuum solutions of the local scale invariant conformally coupled scalar theory of gravity, are conformal to the Schwarzschild-de Sitter solution. In this context the physical relevance of local scale symmetry is discussed. |
1706.02323 | Michael Kalisch | Michael Kalisch, Sebastian Moeckel, Martin Ammon | Critical behavior of the black hole / black string transition | Version 4: matched with journal version but fixed a sign error in
equation (16) (accidentally, version 3 does not contain changes compared to
version 2) | null | 10.1007/JHEP08(2017)049 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We numerically construct static localized black holes in five and six
spacetime dimensions which are solutions to Einstein's vacuum field equations
with one compact periodic dimension. In particular, we investigate the critical
regime in which the poles of the localized black hole are about to merge. A
well adapted m... | [
{
"created": "Wed, 7 Jun 2017 18:09:29 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Jun 2017 14:40:00 GMT",
"version": "v2"
},
{
"created": "Mon, 18 Sep 2017 16:17:05 GMT",
"version": "v3"
},
{
"created": "Tue, 19 Sep 2017 15:33:28 GMT",
"version": "v4"
}
] | 2017-09-20 | [
[
"Kalisch",
"Michael",
""
],
[
"Moeckel",
"Sebastian",
""
],
[
"Ammon",
"Martin",
""
]
] | We numerically construct static localized black holes in five and six spacetime dimensions which are solutions to Einstein's vacuum field equations with one compact periodic dimension. In particular, we investigate the critical regime in which the poles of the localized black hole are about to merge. A well adapted mul... |
gr-qc/9210009 | Ralf Hecht | Ralf Hecht, Friedrich W. Hehl, J. Dermott McCrea, Eckehard W. Mielke
and Yuval Ne'eman | Improved Energy-Momentum Currents in Metric-Affine Spacetime | 14pp | Phys.Lett.A172:13-20,1992 | 10.1016/0375-9601(92)90182-L | null | gr-qc hep-th | null | In Minkowski spacetime it is well-known that the canonical energy-momentum
current is involved in the construction of the globally conserved currents of
energy-momentum and total angular momentum. For the construction of conserved
currents corresponding to (approximate) scale and proper conformal symmetries,
however,... | [
{
"created": "Thu, 15 Oct 1992 17:35:59 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Hecht",
"Ralf",
""
],
[
"Hehl",
"Friedrich W.",
""
],
[
"McCrea",
"J. Dermott",
""
],
[
"Mielke",
"Eckehard W.",
""
],
[
"Ne'eman",
"Yuval",
""
]
] | In Minkowski spacetime it is well-known that the canonical energy-momentum current is involved in the construction of the globally conserved currents of energy-momentum and total angular momentum. For the construction of conserved currents corresponding to (approximate) scale and proper conformal symmetries, however, a... |
1403.7839 | Stanley P. Gudder | Stan Gudder | Labeled Causets in Discrete Quantum Gravity | 17 pages, 1 figure. arXiv admin note: text overlap with
arXiv:1305.5184 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We point out that labeled causets have a much simpler structure than
unlabeled causets. For example, labeled causets can be uniquely specified by a
sequence of integers. Moreover, each labeled causet processes a unique
predecessor and hence has a unique history. Our main result shows that an
arbitrary quantum sequent... | [
{
"created": "Mon, 31 Mar 2014 00:17:54 GMT",
"version": "v1"
}
] | 2014-04-01 | [
[
"Gudder",
"Stan",
""
]
] | We point out that labeled causets have a much simpler structure than unlabeled causets. For example, labeled causets can be uniquely specified by a sequence of integers. Moreover, each labeled causet processes a unique predecessor and hence has a unique history. Our main result shows that an arbitrary quantum sequentia... |
2112.12110 | Ra\"ul Vera | Asier Alonso-Bardaji, David Brizuela, Ra\"ul Vera | An effective model for the quantum Schwarzschild black hole | 6 pages, one figure. Minor changes to match the published version,
and one reference updated | null | 10.1016/j.physletb.2022.137075 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an effective theory to describe the quantization of spherically
symmetric vacuum in loop quantum gravity. We include anomaly-free holonomy
corrections through a canonical transformation of the Hamiltonian of general
relativity, such that the modified constraint algebra closes. The system is
then provided w... | [
{
"created": "Wed, 22 Dec 2021 18:20:11 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Apr 2023 12:55:11 GMT",
"version": "v2"
}
] | 2023-04-18 | [
[
"Alonso-Bardaji",
"Asier",
""
],
[
"Brizuela",
"David",
""
],
[
"Vera",
"Raül",
""
]
] | We present an effective theory to describe the quantization of spherically symmetric vacuum in loop quantum gravity. We include anomaly-free holonomy corrections through a canonical transformation of the Hamiltonian of general relativity, such that the modified constraint algebra closes. The system is then provided wit... |
1406.4367 | Taeyoon Moon | Yun Soo Myung and Taeyoon Moon | Primordial massive gravitational waves from Einstein-Chern-Simons-Weyl
gravity | 1+24 pages, no figure, version accepted for publication in JCAP | null | 10.1088/1475-7516/2014/08/061 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the evolution of cosmological perturbations during de Sitter
inflation in the Einstein-Chern-Simons-Weyl gravity. Primordial massive
gravitational waves are composed of one scalar, two vector and four tensor
circularly polarized modes. We show that the vector power spectrum decays
quickly like a transv... | [
{
"created": "Tue, 17 Jun 2014 13:50:18 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Aug 2014 03:34:06 GMT",
"version": "v2"
}
] | 2015-06-22 | [
[
"Myung",
"Yun Soo",
""
],
[
"Moon",
"Taeyoon",
""
]
] | We investigate the evolution of cosmological perturbations during de Sitter inflation in the Einstein-Chern-Simons-Weyl gravity. Primordial massive gravitational waves are composed of one scalar, two vector and four tensor circularly polarized modes. We show that the vector power spectrum decays quickly like a transver... |
gr-qc/0209064 | Sergey Vyatchanin | V. B. Braginsky, S. E. Strigin and S. P. Vyatchanin | Analysis of Parametric Oscillatory Instability in Power Recycled LIGO
Interferometer | 9 pages, 2 figures. submitted to Physics Letters A | Phys.Lett. A305 (2002) 111-124 | 10.1016/S0375-9601(02)01357-9 | null | gr-qc | null | We present the analysis of a nonlinear effect of parametric oscillatory
instability in power recycled LIGO interferometer with the Fabry-Perot (FP)
cavities in the arms. The basis for this effect is the excitation of the
additional (Stokes) optical mode and the mirror elastic mode, when the optical
energy stored in t... | [
{
"created": "Thu, 19 Sep 2002 05:19:35 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Braginsky",
"V. B.",
""
],
[
"Strigin",
"S. E.",
""
],
[
"Vyatchanin",
"S. P.",
""
]
] | We present the analysis of a nonlinear effect of parametric oscillatory instability in power recycled LIGO interferometer with the Fabry-Perot (FP) cavities in the arms. The basis for this effect is the excitation of the additional (Stokes) optical mode and the mirror elastic mode, when the optical energy stored in the... |
0812.1117 | Yungui Gong | Xi-ming Chen, Yungui Gong and Emmanuel N. Saridakis | Phase-space analysis of interacting phantom cosmology | 6 figures, use revtex, v2: minor corrections, references added,
accepted for publication in JCAP | JCAP 0904:001,2009 | 10.1088/1475-7516/2009/04/001 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a detailed phase-space analysis of various phantom cosmological
models, where the dark energy sector interacts with the dark matter one. We
examine whether there exist late-time scaling attractors, corresponding to an
accelerating universe and possessing dark energy and dark matter densities of
the same or... | [
{
"created": "Fri, 5 Dec 2008 11:55:08 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Mar 2009 01:12:29 GMT",
"version": "v2"
}
] | 2009-12-04 | [
[
"Chen",
"Xi-ming",
""
],
[
"Gong",
"Yungui",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We perform a detailed phase-space analysis of various phantom cosmological models, where the dark energy sector interacts with the dark matter one. We examine whether there exist late-time scaling attractors, corresponding to an accelerating universe and possessing dark energy and dark matter densities of the same orde... |
1405.6281 | Nicholas Tsamis | N. C. Tsamis and R. P. Woodard | Classical Gravitational Back-Reaction | 14 pages | null | 10.1088/0264-9381/31/18/185014 | CCTP-2014-08, UFIFT-QG-14-03 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quantum gravitational back-reaction on inflation is based on the
self-gravitation of infrared gravitons which are ripped out of the vacuum
during inflation. The only quantum part of this process is the creation of
gravitons; after they have emerged from the vacuum their behaviour is
essentially classical. To test... | [
{
"created": "Sat, 24 May 2014 08:12:02 GMT",
"version": "v1"
}
] | 2022-04-20 | [
[
"Tsamis",
"N. C.",
""
],
[
"Woodard",
"R. P.",
""
]
] | The quantum gravitational back-reaction on inflation is based on the self-gravitation of infrared gravitons which are ripped out of the vacuum during inflation. The only quantum part of this process is the creation of gravitons; after they have emerged from the vacuum their behaviour is essentially classical. To test t... |
gr-qc/9908073 | Christopher J. Fewster | Christopher J. Fewster (University of York) and Edward Teo (University
of Cambridge and National University of Singapore) | Quantum inequalities and `quantum interest' as eigenvalue problems | 18 pages, RevTeX. One new result added; typos fixed. To appear in
Phys. Rev. D | Phys.Rev. D61 (2000) 084012 | 10.1103/PhysRevD.61.084012 | DAMTP-1999-109 | gr-qc hep-th math-ph math.MP | null | Quantum inequalities (QI's) provide lower bounds on the averaged energy
density of a quantum field. We show how the QI's for massless scalar fields in
even dimensional Minkowski space may be reformulated in terms of the positivity
of a certain self-adjoint operator - a generalised Schroedinger operator with
the energ... | [
{
"created": "Mon, 30 Aug 1999 15:44:13 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Jan 2000 15:33:09 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Fewster",
"Christopher J.",
"",
"University of York"
],
[
"Teo",
"Edward",
"",
"University\n of Cambridge and National University of Singapore"
]
] | Quantum inequalities (QI's) provide lower bounds on the averaged energy density of a quantum field. We show how the QI's for massless scalar fields in even dimensional Minkowski space may be reformulated in terms of the positivity of a certain self-adjoint operator - a generalised Schroedinger operator with the energy ... |
1405.6207 | Koutarou Kyutoku | Koutarou Kyutoku, Masaru Shibata, Keisuke Taniguchi | Reducing orbital eccentricity in initial data of binary neutron stars | 20 pages, 12 figures, matched to the published version | Phys. Rev. D 90, 064006 (2014) | 10.1103/PhysRevD.90.064006 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a method to compute low-eccentricity initial data of binary
neutron stars required to perform realistic simulations in numerical
relativity. The orbital eccentricity is controlled by adjusting the orbital
angular velocity of a binary and incorporating an approaching relative velocity
of the neutron stars. ... | [
{
"created": "Fri, 23 May 2014 20:00:11 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Sep 2014 19:35:37 GMT",
"version": "v2"
}
] | 2017-12-27 | [
[
"Kyutoku",
"Koutarou",
""
],
[
"Shibata",
"Masaru",
""
],
[
"Taniguchi",
"Keisuke",
""
]
] | We develop a method to compute low-eccentricity initial data of binary neutron stars required to perform realistic simulations in numerical relativity. The orbital eccentricity is controlled by adjusting the orbital angular velocity of a binary and incorporating an approaching relative velocity of the neutron stars. Th... |
2105.03849 | Bobby Eka Gunara | Ahmad Khoirul Falah, Andy Octavian Latief, Husin Alatas, and Bobby Eka
Gunara | Higher-Dimensional Minimal Theory of Mass-Varying Massive Gravity And
Its Cosmological Consequences | 20 pages, 2 column, 4 figures, 2 tables. Minor corrections related to
vielbein and references. Match version with Phys Rev D | Phys. Rev. D 104, 084013 (2021) | 10.1103/PhysRevD.104.084013 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this paper we construct higher-dimensional minimal theory of mass-varying
massive gravity (MTMVMG) where the masslike scalar potential is coupled to a
vielbein potential, unlike in the previous literature where it is coupled to
metric, such that the number of graviton degrees of freedom in the theory is
the same a... | [
{
"created": "Sun, 9 May 2021 06:29:07 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Oct 2021 09:44:25 GMT",
"version": "v2"
}
] | 2021-10-06 | [
[
"Falah",
"Ahmad Khoirul",
""
],
[
"Latief",
"Andy Octavian",
""
],
[
"Alatas",
"Husin",
""
],
[
"Gunara",
"Bobby Eka",
""
]
] | In this paper we construct higher-dimensional minimal theory of mass-varying massive gravity (MTMVMG) where the masslike scalar potential is coupled to a vielbein potential, unlike in the previous literature where it is coupled to metric, such that the number of graviton degrees of freedom in the theory is the same as ... |
gr-qc/0605153 | Dinesh Singh | Dinesh Singh, Nader Mobed, Giorgio Papini | Can Gravity Distinguish Between Dirac and Majorana Neutrinos? | 4 pages, 2 figures; minor changes of text; typo corrected; accepted
in Physical Review Letters | Phys.Rev.Lett. 97 (2006) 041101 | 10.1103/PhysRevLett.97.041101 | null | gr-qc hep-ph hep-th | null | We show that spin-gravity interaction can distinguish between Dirac and
Majorana neutrino wave packets propagating in a Lense-Thirring background.
Using time-independent perturbation theory and gravitational phase to generate
a perturbation Hamiltonian with spin-gravity coupling, we show that the
associated matrix el... | [
{
"created": "Wed, 31 May 2006 18:47:16 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Jun 2006 02:05:11 GMT",
"version": "v2"
},
{
"created": "Wed, 5 Jul 2006 01:31:12 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Singh",
"Dinesh",
""
],
[
"Mobed",
"Nader",
""
],
[
"Papini",
"Giorgio",
""
]
] | We show that spin-gravity interaction can distinguish between Dirac and Majorana neutrino wave packets propagating in a Lense-Thirring background. Using time-independent perturbation theory and gravitational phase to generate a perturbation Hamiltonian with spin-gravity coupling, we show that the associated matrix elem... |
0807.0596 | Marko Vojinovic | Milovan Vasilic, Marko Vojinovic | Zero-size objects in Riemann-Cartan spacetime | 12 pages | JHEP 0808:104,2008 | 10.1088/1126-6708/2008/08/104 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the conservation law of the stress-energy and spin tensors to study
the motion of massive zero-size objects in Riemann-Cartan geometry. The
resultant world line equations turn out to exhibit a novel spin-curvature
coupling. In particular, the spin of the Dirac particle does not couple to the
background curvatu... | [
{
"created": "Thu, 3 Jul 2008 16:34:23 GMT",
"version": "v1"
}
] | 2010-10-12 | [
[
"Vasilic",
"Milovan",
""
],
[
"Vojinovic",
"Marko",
""
]
] | We use the conservation law of the stress-energy and spin tensors to study the motion of massive zero-size objects in Riemann-Cartan geometry. The resultant world line equations turn out to exhibit a novel spin-curvature coupling. In particular, the spin of the Dirac particle does not couple to the background curvature... |
1802.00650 | Tomi Koivisto | Tomi Koivisto | On an integrable geometrical foundation of gravity | 21 pages, 2 figures, proceedings submitted to IJGMMP | null | 10.1142/S0219887818400066 | NORDITA 2018-006 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a talk at the conference {\it Geometrical Foundations of Gravity at Tartu
2017}, it was suggested that the affine spacetime connection could be
associated with purely fictitious forces. This leads to gravitation in a flat
and smooth geometry. Fermions are found to nevertheless couple with the
metrical connection a... | [
{
"created": "Fri, 2 Feb 2018 12:04:48 GMT",
"version": "v1"
}
] | 2018-09-13 | [
[
"Koivisto",
"Tomi",
""
]
] | In a talk at the conference {\it Geometrical Foundations of Gravity at Tartu 2017}, it was suggested that the affine spacetime connection could be associated with purely fictitious forces. This leads to gravitation in a flat and smooth geometry. Fermions are found to nevertheless couple with the metrical connection and... |
gr-qc/0411045 | Christos G. Tsagas | John D. Barrow and Christos G. Tsagas (DAMTP) | New Isotropic and Anisotropic Sudden Singularities | Typos corrected. Published version | Class.Quant.Grav. 22 (2005) 1563-1571 | 10.1088/0264-9381/22/9/006 | null | gr-qc astro-ph hep-th | null | We show the existence of an infinite family of finite-time singularities in
isotropically expanding universes which obey the weak, strong, and dominant
energy conditions. We show what new type of energy condition is needed to
exclude them ab initio. We also determine the conditions under which
finite-time future sing... | [
{
"created": "Tue, 9 Nov 2004 12:47:47 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Mar 2005 22:42:54 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Mar 2005 19:43:51 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Barrow",
"John D.",
"",
"DAMTP"
],
[
"Tsagas",
"Christos G.",
"",
"DAMTP"
]
] | We show the existence of an infinite family of finite-time singularities in isotropically expanding universes which obey the weak, strong, and dominant energy conditions. We show what new type of energy condition is needed to exclude them ab initio. We also determine the conditions under which finite-time future singul... |
2404.16081 | Gamal G.L. Nashed | G.G.L. Nashed | Extension of Hayward black hole in $f(R)$ gravity coupled with a scalar
field | 23 pages, four figures | Physics of the Dark Universe 44, 2024, 101462 | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | This study looks into regular solutions in a theory of gravity called $f(R)$
gravity, which also involves a scalar field. The $f(R)$ theory changes
Einstein's ideas by adding a new function related to something called the Ricci
scalar. This lets us tweak the equations that describe how gravity works.
Adding a scalar ... | [
{
"created": "Wed, 24 Apr 2024 13:40:12 GMT",
"version": "v1"
}
] | 2024-04-26 | [
[
"Nashed",
"G. G. L.",
""
]
] | This study looks into regular solutions in a theory of gravity called $f(R)$ gravity, which also involves a scalar field. The $f(R)$ theory changes Einstein's ideas by adding a new function related to something called the Ricci scalar. This lets us tweak the equations that describe how gravity works. Adding a scalar fi... |
1302.1066 | Joan Josep Ferrando | Joan Josep Ferrando and Juan Antonio S\'aez | A note on static metrics: the degenerate case | 5 pages | Class. Quantum Grav. {30} (2013) 057001 | 10.1088/0264-9381/30/5/057001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give the necessary and sufficient conditions for a 3-metric to be the
adapted spatial metric of a static vacuum solution. This work accomplishes for
the degenerate cases the already known study for the regular ones (Bartnik and
Tod 2006 {\it Class. Quantum Grav.} {\bf 23} 569-571).
| [
{
"created": "Tue, 5 Feb 2013 15:39:32 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Ferrando",
"Joan Josep",
""
],
[
"Sáez",
"Juan Antonio",
""
]
] | We give the necessary and sufficient conditions for a 3-metric to be the adapted spatial metric of a static vacuum solution. This work accomplishes for the degenerate cases the already known study for the regular ones (Bartnik and Tod 2006 {\it Class. Quantum Grav.} {\bf 23} 569-571). |
1807.00388 | Ali \"Ovg\"un Dr. | Ali \"Ovg\"un, \.Izzet Sakall{\i}, and Joel Saavedra | Shadow cast and Deflection angle of Kerr-Newman-Kasuya spacetime | 16 pages, 4 figures. Accepted for publication in Journal of Cosmology
and Astroparticle Physics (JCAP). arXiv admin note: text overlap with
arXiv:gr-qc/0301100 by other authors | JCAP 10 (2018), 041 | 10.1088/1475-7516/2018/10/041 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the shadow cast or silhouette generated by a Kerr-Newman-Kasuya
(KNK) spacetime (rotating dyon black hole). It is shown that in addition to the
angular momentum of the black hole, the dyon charge also affects the shadow
image of the KNK black hole. Moreover, we analyze the weak gravitational
lensing by the K... | [
{
"created": "Sun, 1 Jul 2018 20:23:58 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Oct 2018 08:46:03 GMT",
"version": "v2"
}
] | 2018-10-23 | [
[
"Övgün",
"Ali",
""
],
[
"Sakallı",
"İzzet",
""
],
[
"Saavedra",
"Joel",
""
]
] | We study the shadow cast or silhouette generated by a Kerr-Newman-Kasuya (KNK) spacetime (rotating dyon black hole). It is shown that in addition to the angular momentum of the black hole, the dyon charge also affects the shadow image of the KNK black hole. Moreover, we analyze the weak gravitational lensing by the KNK... |
0903.2565 | Jos\'e Wadih Maluf Dr. | J. W. Maluf, S. C.Ulhoa, F. F. Faria | Pound-Rebka experiment and torsion in the Schwarzschild spacetime | 16 pages, two figures, one typo fixed, one paragraph added in section
5 | Phys. Rev. D 80, 044036 (2009) | 10.1103/PhysRevD.80.044036 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop some ideas discussed by E. Schucking [arXiv:0803.4128] concerning
the geometry of the gravitational field. First, we address the concept
according to which the gravitational acceleration is a manifestation of the
spacetime torsion, not of the curvature tensor. It is possible to show that
there are situatio... | [
{
"created": "Sat, 14 Mar 2009 23:58:24 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Sep 2009 12:03:23 GMT",
"version": "v2"
}
] | 2009-09-02 | [
[
"Maluf",
"J. W.",
""
],
[
"Ulhoa",
"S. C.",
""
],
[
"Faria",
"F. F.",
""
]
] | We develop some ideas discussed by E. Schucking [arXiv:0803.4128] concerning the geometry of the gravitational field. First, we address the concept according to which the gravitational acceleration is a manifestation of the spacetime torsion, not of the curvature tensor. It is possible to show that there are situations... |
1104.4543 | Gerard Hooft 't | Gerard 't Hooft | A class of elementary particle models without any adjustable real
parameters | 28 pages (incl. title page), no figures | Foundations of Physics 41, no 12 (2011) pp 1829-1856 | 10.1007/s10701-011-9586-8 | ITP-UU-11/14; SPIN-11/08 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Conventional particle theories such as the Standard Model have a number of
freely adjustable coupling constants and mass parameters, depending on the
symmetry algebra of the local gauge group and the representations chosen for
the spinor and scalar fields. There seems to be no physical principle to
determine these pa... | [
{
"created": "Sat, 23 Apr 2011 09:27:27 GMT",
"version": "v1"
}
] | 2015-05-27 | [
[
"Hooft",
"Gerard 't",
""
]
] | Conventional particle theories such as the Standard Model have a number of freely adjustable coupling constants and mass parameters, depending on the symmetry algebra of the local gauge group and the representations chosen for the spinor and scalar fields. There seems to be no physical principle to determine these para... |
1010.2784 | Gary T. Horowitz | Gary T. Horowitz | Surprising Connections Between General Relativity and Condensed Matter | 14 pages; based on talk given at GR19 | Class.Quant.Grav.28:114008,2011 | 10.1088/0264-9381/28/11/114008 | null | gr-qc cond-mat.other cond-mat.supr-con | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This brief review is intended to introduce gravitational physicists to recent
developments in which general relativity is being used to describe certain
aspects of condensed matter systems, e.g., superconductivity.
| [
{
"created": "Wed, 13 Oct 2010 21:58:17 GMT",
"version": "v1"
}
] | 2011-05-25 | [
[
"Horowitz",
"Gary T.",
""
]
] | This brief review is intended to introduce gravitational physicists to recent developments in which general relativity is being used to describe certain aspects of condensed matter systems, e.g., superconductivity. |
1505.05105 | Farook Rahaman | Alireza Sepehri, Farook Rahaman, Mohammad Reza Setare, Anirudh
Pradhan, Salvatore Capozziello, Iftikar Hossain Sardar | Unifying inflation with late-time acceleration in BIonic system | 12 pages, 3 figures. Accepted in Phys.Lett.B. arXiv admin note:
substantial text overlap with arXiv:1502.05493 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this research, we propose a new model that allows to unify inflation,
deceleration and acceleration phases of expansion history in BIonic system. In
this model, in the beginning, there have been $k$ black fundamental strings
that transited to the BIon configuration at a corresponding point. At this
point, two univ... | [
{
"created": "Mon, 18 May 2015 11:46:30 GMT",
"version": "v1"
}
] | 2015-05-20 | [
[
"Sepehri",
"Alireza",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Setare",
"Mohammad Reza",
""
],
[
"Pradhan",
"Anirudh",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"Sardar",
"Iftikar Hossain",
""
]
] | In this research, we propose a new model that allows to unify inflation, deceleration and acceleration phases of expansion history in BIonic system. In this model, in the beginning, there have been $k$ black fundamental strings that transited to the BIon configuration at a corresponding point. At this point, two univer... |
gr-qc/9503062 | Gary Horowitz | Gary T. Horowitz and Robert Myers | The Value of Singularities | 5 pages, no figures; a few clarifying comments added | Gen.Rel.Grav.27:915-919,1995 | 10.1007/BF02113073 | UCSBTH-95-6, McGill/95-20 | gr-qc hep-th | null | We point out that spacetime singularities play a useful role in gravitational
theories by eliminating unphysical solutions. In particular, we argue that any
modification of general relativity which is completely nonsingular cannot have
a stable ground state. This argument applies both to classical extensions of
gener... | [
{
"created": "Thu, 30 Mar 1995 21:25:12 GMT",
"version": "v1"
},
{
"created": "Tue, 30 May 1995 22:31:23 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Horowitz",
"Gary T.",
""
],
[
"Myers",
"Robert",
""
]
] | We point out that spacetime singularities play a useful role in gravitational theories by eliminating unphysical solutions. In particular, we argue that any modification of general relativity which is completely nonsingular cannot have a stable ground state. This argument applies both to classical extensions of general... |
1107.0422 | Pedro Castelo Ferreira | P. Castelo Ferreira | Rotating Magnetic Solutions for 2+1D Einstein Maxwell Chern-Simons | 39 pages; 2 tables; revised version: mass and angular momentum
definitions consistent with embedded 2+1D systems (for example 3+1D systems
with cylindrical symmetry) | Scripta-Ingenia 9 (2018) 3-21 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article are computed magnetic solutions of Einstein Maxwell
Chern-Simons theory coupled to a dilaton-like scalar field. These solutions are
computed by applying a space-time duality suggested by the author to known
electric solutions of the same theory. As a redundancy check for the space-time
duality it is e... | [
{
"created": "Sun, 3 Jul 2011 01:43:21 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Jul 2011 12:16:14 GMT",
"version": "v2"
},
{
"created": "Fri, 29 Jul 2011 22:46:33 GMT",
"version": "v3"
},
{
"created": "Wed, 31 Jan 2018 15:49:35 GMT",
"version": "v4"
}
] | 2021-03-12 | [
[
"Ferreira",
"P. Castelo",
""
]
] | In this article are computed magnetic solutions of Einstein Maxwell Chern-Simons theory coupled to a dilaton-like scalar field. These solutions are computed by applying a space-time duality suggested by the author to known electric solutions of the same theory. As a redundancy check for the space-time duality it is exp... |
1406.3009 | Roger Tagne Wafo | Aurore Cabet, Piotr T. Chru\'sciel, Roger Tagne Wafo | On the characteristic initial value problem for nonlinear symmetric
hyperbolic systems, including Einstein equations | 85 pages, 11 figures | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a characteristic initial value problem for a class of symmetric
hyperbolic systems with initial data given on two smooth null intersecting
characteristic surfaces. We prove existence of solutions on a future
neighborhood of the initial surfaces. The general result is applied to general
semilinear wave equ... | [
{
"created": "Wed, 11 Jun 2014 19:36:21 GMT",
"version": "v1"
},
{
"created": "Sat, 26 Mar 2016 09:15:41 GMT",
"version": "v2"
}
] | 2016-03-29 | [
[
"Cabet",
"Aurore",
""
],
[
"Chruściel",
"Piotr T.",
""
],
[
"Wafo",
"Roger Tagne",
""
]
] | We consider a characteristic initial value problem for a class of symmetric hyperbolic systems with initial data given on two smooth null intersecting characteristic surfaces. We prove existence of solutions on a future neighborhood of the initial surfaces. The general result is applied to general semilinear wave equat... |
gr-qc/9504035 | Jorma Louko | Domenico Giulini and Jorma Louko | Diffeomorphism invariant subspaces in Witten's 2+1 quantum gravity on
${\bf R} \times T^2$ | 14 pages, REVTeX v3.0 | Class.Quant.Grav. 12 (1995) 2735-2746 | 10.1088/0264-9381/12/11/006 | Freiburg THEP--95/7, WISC--MILW--95--TH--13 | gr-qc | null | We address the role of large diffeomorphisms in Witten's 2+1 gravity on the
manifold ${\bf R} \times T^2$. In a ``spacelike sector" quantum theory that
treats the large diffeomorphisms as a symmetry, rather than as gauge, the
Hilbert space is shown to contain no nontrivial finite dimensional subspaces
that are invari... | [
{
"created": "Fri, 21 Apr 1995 20:27:52 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Giulini",
"Domenico",
""
],
[
"Louko",
"Jorma",
""
]
] | We address the role of large diffeomorphisms in Witten's 2+1 gravity on the manifold ${\bf R} \times T^2$. In a ``spacelike sector" quantum theory that treats the large diffeomorphisms as a symmetry, rather than as gauge, the Hilbert space is shown to contain no nontrivial finite dimensional subspaces that are invarian... |
1708.09592 | Daiske Yoshida | Daiske Yoshida and Jiro Soda | Exploring the string axiverse and parity violation in gravity with
gravitational waves | 5 pages, 2 figures | International Journal of Modern Physics D, Vol. 27, No. 9 (2018)
1850096 | 10.1142/S0218271818500967 | KOBE-COSMO-17-10 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the parametric resonance of gravitational waves occurs due to
the axion coherent oscillation and the circular polarization of gravitational
waves is induced by the Chern-Simons coupling. However, we have never observed
these signatures in the data of gravitational waves. Using this fact, we give
stringen... | [
{
"created": "Thu, 31 Aug 2017 07:18:17 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Sep 2017 06:56:40 GMT",
"version": "v2"
},
{
"created": "Mon, 26 Mar 2018 07:07:10 GMT",
"version": "v3"
}
] | 2018-07-06 | [
[
"Yoshida",
"Daiske",
""
],
[
"Soda",
"Jiro",
""
]
] | We show that the parametric resonance of gravitational waves occurs due to the axion coherent oscillation and the circular polarization of gravitational waves is induced by the Chern-Simons coupling. However, we have never observed these signatures in the data of gravitational waves. Using this fact, we give stringent ... |
2207.13202 | Atsushi Higuchi | Atsushi Higuchi, Lasse Schmieding and David Serrano Blanco | Automorphic scalar fields in two-dimensional de Sitter space | 33 pages, 2 figures, published version | Class.Quant.Grav. 40 (2023) 1, 015009 | 10.1088/1361-6382/aca73f | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study non-interacting automorphic quantum scalar fields with positive mass
in two-dimensional de Sitter space. We find that there are no Hadamard states
which are de Sitter invariant except in the periodic case, extending the result
of Epstein and Moschella for the anti-periodic case. We construct the two-point
Wi... | [
{
"created": "Tue, 26 Jul 2022 22:32:03 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Jan 2023 10:53:12 GMT",
"version": "v2"
}
] | 2023-01-12 | [
[
"Higuchi",
"Atsushi",
""
],
[
"Schmieding",
"Lasse",
""
],
[
"Blanco",
"David Serrano",
""
]
] | We study non-interacting automorphic quantum scalar fields with positive mass in two-dimensional de Sitter space. We find that there are no Hadamard states which are de Sitter invariant except in the periodic case, extending the result of Epstein and Moschella for the anti-periodic case. We construct the two-point Wigh... |
gr-qc/9806004 | Richard J. Epp | Richard J. Epp (1), R. B. Mann (1) ((1) University of Waterloo) | A New Approach to Black Hole Microstates | 6 pages, 0 figures, LaTeX; submitted to Mod. Phys. Lett. A.; this
essay received "honorable mention" from the Gravity Research Foundation, 1998 | Mod.Phys.Lett. A13 (1998) 1875-1880 | 10.1142/S0217732398001960 | WATPHYS TH-98/02 | gr-qc | null | If one encodes the gravitational degrees of freedom in an orthonormal frame
field there is a very natural first order action one can write down (which in
four dimensions is known as the Goldberg action). In this essay we will show
that this action contains a boundary action for certain microscopic degrees of
freedom ... | [
{
"created": "Sat, 30 May 1998 21:28:33 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Epp",
"Richard J.",
"",
"University of Waterloo"
],
[
"Mann",
"R. B.",
"",
"University of Waterloo"
]
] | If one encodes the gravitational degrees of freedom in an orthonormal frame field there is a very natural first order action one can write down (which in four dimensions is known as the Goldberg action). In this essay we will show that this action contains a boundary action for certain microscopic degrees of freedom li... |
1908.01254 | Wan Cong Ms | Wan Cong and Robert B. Mann | Thermodynamic Instabilities of Generalized Exotic BTZ Black Holes | 4 pages, 2 figures | null | 10.1007/JHEP11(2019)004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the conjecture that black holes violating the reverse
isoperimetric inequality have negative specific heat at constant volume $C_V$.
We test this conjecture on the family of generalized exotic Ba\~nados,
Teitelbiom and Zanelli (BTZ) black holes and find that $C_V$ can be positive
even when the reverse isop... | [
{
"created": "Sun, 4 Aug 2019 01:40:20 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Aug 2019 13:36:49 GMT",
"version": "v2"
}
] | 2020-01-08 | [
[
"Cong",
"Wan",
""
],
[
"Mann",
"Robert B.",
""
]
] | We examine the conjecture that black holes violating the reverse isoperimetric inequality have negative specific heat at constant volume $C_V$. We test this conjecture on the family of generalized exotic Ba\~nados, Teitelbiom and Zanelli (BTZ) black holes and find that $C_V$ can be positive even when the reverse isoper... |
2302.04962 | Georgios Fanaras | Georgios Fanaras, Alexander Vilenkin | Quantum cosmology, eternal inflation, and swampland conjectures | 28 pages, 9 figures | null | 10.1088/1475-7516/2023/04/034 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In light of the recent swampland conjectures, we explore quantum cosmology
and eternal inflation beyond the slow roll regime. We consider a model of a
closed universe with a scalar field $\phi$ in the framework of tunneling
approach to quantum cosmology. The scalar field potential is assumed to have a
maximum at $\ph... | [
{
"created": "Thu, 9 Feb 2023 22:36:24 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Feb 2023 16:49:40 GMT",
"version": "v2"
}
] | 2023-04-19 | [
[
"Fanaras",
"Georgios",
""
],
[
"Vilenkin",
"Alexander",
""
]
] | In light of the recent swampland conjectures, we explore quantum cosmology and eternal inflation beyond the slow roll regime. We consider a model of a closed universe with a scalar field $\phi$ in the framework of tunneling approach to quantum cosmology. The scalar field potential is assumed to have a maximum at $\phi=... |
1410.0026 | Joshua Cooperman | Joshua H. Cooperman | Renormalization of lattice-regularized quantum gravity models I. General
considerations | 27 pages; revised and updated review of past literature. This is the
much delayed first paper in the two-part series | null | null | null | gr-qc hep-lat hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lattice regularization is a standard technique for the nonperturbative
definition of a quantum theory of fields. Several approaches to the
construction of a quantum theory of gravity adopt this technique either
explicitly or implicitly. A crucial complement to lattice regularization is the
process of renormalization ... | [
{
"created": "Tue, 30 Sep 2014 20:00:41 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Oct 2014 19:54:12 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Oct 2014 13:19:16 GMT",
"version": "v3"
}
] | 2014-10-22 | [
[
"Cooperman",
"Joshua H.",
""
]
] | Lattice regularization is a standard technique for the nonperturbative definition of a quantum theory of fields. Several approaches to the construction of a quantum theory of gravity adopt this technique either explicitly or implicitly. A crucial complement to lattice regularization is the process of renormalization th... |
1403.2618 | Maurice Dupre | Maurice J. Dupre | An observer principle for general relativity | arXiv admin note: substantial text overlap with arXiv:0903.5225 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a mathematical uniqueness theorem which in particular shows that
symmetric tensors in general relativity are uniquely determined by their
monomial functions on the light cone. Thus, for an observer to observe a tensor
at an event in general relativity is to contract with the velocity vector of
the observer, r... | [
{
"created": "Tue, 11 Mar 2014 15:45:05 GMT",
"version": "v1"
}
] | 2014-03-12 | [
[
"Dupre",
"Maurice J.",
""
]
] | We give a mathematical uniqueness theorem which in particular shows that symmetric tensors in general relativity are uniquely determined by their monomial functions on the light cone. Thus, for an observer to observe a tensor at an event in general relativity is to contract with the velocity vector of the observer, rep... |
gr-qc/0506090 | Mauricio Cataldo MC | Mauricio Cataldo and Luis P. Chimento | Form invariant transformations between n-- and m-- dimensional flat
Friedmann--Robertson--Walker cosmologies | Accepted for publication in Iternational Journal of Modern Physics D | Int.J.Mod.Phys.D17:1981-1989,2008 | 10.1142/S0218271808013790 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We illustrate how the group of symmetry transformations, which preserve the
form of the n--dimensional flat Friedmann--Robertson--Walker cosmologies
satisfying Einstein equations, acts in any dimension. This group relates the
energy density and the isotropic pressure of the cosmic fluid to the expansion
rate. The fre... | [
{
"created": "Thu, 16 Jun 2005 20:31:01 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Jul 2008 14:50:09 GMT",
"version": "v2"
}
] | 2009-02-11 | [
[
"Cataldo",
"Mauricio",
""
],
[
"Chimento",
"Luis P.",
""
]
] | We illustrate how the group of symmetry transformations, which preserve the form of the n--dimensional flat Friedmann--Robertson--Walker cosmologies satisfying Einstein equations, acts in any dimension. This group relates the energy density and the isotropic pressure of the cosmic fluid to the expansion rate. The freed... |
gr-qc/0005126 | Kirill Krasnov | A. Ashtekar, J. Baez and K. Krasnov | Quantum Geometry of Isolated Horizons and Black Hole Entropy | 66 pages, 4 figures | Adv.Theor.Math.Phys. 4 (2000) 1-94 | null | NSF-ITP-99-153 | gr-qc hep-th | null | Using the earlier developed classical Hamiltonian framework as the point of
departure, we carry out a non-perturbative quantization of the sector of
general relativity, coupled to matter, admitting non-rotating isolated horizons
as inner boundaries. The emphasis is on the quantum geometry of the horizon.
Polymer exci... | [
{
"created": "Mon, 29 May 2000 19:03:34 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ashtekar",
"A.",
""
],
[
"Baez",
"J.",
""
],
[
"Krasnov",
"K.",
""
]
] | Using the earlier developed classical Hamiltonian framework as the point of departure, we carry out a non-perturbative quantization of the sector of general relativity, coupled to matter, admitting non-rotating isolated horizons as inner boundaries. The emphasis is on the quantum geometry of the horizon. Polymer excita... |
2112.06503 | Ingemar Bengtsson | Ingemar Bengtsson, Tobias Eklund | Energy in Newtonian gravity | Version 2 has 18 pages, and was much improved by referees | Found. Phys. 53 (2023) 15 | 10.1007/s10701-022-00660-z | null | gr-qc physics.hist-ph | http://creativecommons.org/licenses/by/4.0/ | In Newtonian gravity it is a moot question whether energy should be localized
in the field or inside matter. An argument from relativity suggests a
compromise in which the contribution from the field in vacuum is positive
definite. We show that the same compromise is implied by Noether's theorem
applied to a variatio... | [
{
"created": "Mon, 13 Dec 2021 09:25:37 GMT",
"version": "v1"
},
{
"created": "Sun, 4 Dec 2022 13:16:54 GMT",
"version": "v2"
}
] | 2023-07-26 | [
[
"Bengtsson",
"Ingemar",
""
],
[
"Eklund",
"Tobias",
""
]
] | In Newtonian gravity it is a moot question whether energy should be localized in the field or inside matter. An argument from relativity suggests a compromise in which the contribution from the field in vacuum is positive definite. We show that the same compromise is implied by Noether's theorem applied to a variationa... |
1711.10278 | Valentin Kuzmichev | V. E. Kuzmichev, V. V. Kuzmichev (Bogolyubov Institute for Theoretical
Physics) | Generalized uncertainty principle in quantum cosmology for the maximally
symmetric space | 13 pages, v.2: new section and title, abstract is revised | Ukr. J. Phys. 2019. Vol. 64, No. 2, pp. 100-108 | 10.15407/ujpe64.2.100 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The new uncertainty relation is derived in the context of the canonical
quantum theory with gravity for the case of the maximally symmetric space. This
relation establishes a connection between fluctuations of the quantities which
determine the intrinsic and extrinsic curvatures of the spacelike hypersurface
in space... | [
{
"created": "Tue, 28 Nov 2017 13:23:49 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Nov 2018 13:16:44 GMT",
"version": "v2"
}
] | 2019-11-05 | [
[
"Kuzmichev",
"V. E.",
"",
"Bogolyubov Institute for Theoretical\n Physics"
],
[
"Kuzmichev",
"V. V.",
"",
"Bogolyubov Institute for Theoretical\n Physics"
]
] | The new uncertainty relation is derived in the context of the canonical quantum theory with gravity for the case of the maximally symmetric space. This relation establishes a connection between fluctuations of the quantities which determine the intrinsic and extrinsic curvatures of the spacelike hypersurface in spaceti... |
2101.02687 | N. P. Landsman | Klaas Landsman | Singularities, black holes, and cosmic censorship: A tribute to Roger
Penrose | 28 pages. Section 3.2 expanded by a page and some references added | null | 10.1007/s10701-021-00432-1 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the light of his recent (and fully deserved) Nobel Prize, this pedagogical
paper draws attention to a fundamental tension that drove Penrose's work on
general relativity. His 1965 singularity theorem (for which he got the prize)
does not in fact imply the existence of black holes (even if its assumptions
are met).... | [
{
"created": "Thu, 7 Jan 2021 18:48:49 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Jan 2021 16:39:25 GMT",
"version": "v2"
}
] | 2021-04-14 | [
[
"Landsman",
"Klaas",
""
]
] | In the light of his recent (and fully deserved) Nobel Prize, this pedagogical paper draws attention to a fundamental tension that drove Penrose's work on general relativity. His 1965 singularity theorem (for which he got the prize) does not in fact imply the existence of black holes (even if its assumptions are met). S... |
1212.3764 | Khedmat Atazadeh | K. Atazadeh, Misha Mousavi | Vacuum spherically symmetric solutions in $f(T)$ gravity | 8 pages,typos corrected, Refs. added | Eur. Phys. J. C 73 (2013) 2272 | 10.1140/epjc/s10052-012-2272-y | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/3.0/ | Spherically symmetric static vacuum solutions have been built in $f(T)$
models of gravity theory. We apply some conditions on the metric components;
then the new vacuum spherically symmetric solutions are obtained. Also, by
extracting metric coefficients we determine the analytical form of $f(T)$.
| [
{
"created": "Sun, 16 Dec 2012 08:45:52 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Jan 2013 17:13:42 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Jan 2013 05:53:38 GMT",
"version": "v3"
}
] | 2013-11-19 | [
[
"Atazadeh",
"K.",
""
],
[
"Mousavi",
"Misha",
""
]
] | Spherically symmetric static vacuum solutions have been built in $f(T)$ models of gravity theory. We apply some conditions on the metric components; then the new vacuum spherically symmetric solutions are obtained. Also, by extracting metric coefficients we determine the analytical form of $f(T)$. |
1306.5739 | Farook Rahaman | Ahmad T Ali and F Rahaman | New Class of Magnetized Inhomogeneous Bianchi Type-I Cosmological Model
with Variable Magnetic Permeability in Lyra Geometry | Int. J. Theor. Phys. 52, 4055 (2013) | null | 10.1007/s10773-013-1719-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inhomogeneous Bianchi type-I cosmological model with electro-magnetic field
based on Lyra geometry is investigated. Using separated method, the Einstein
field equations have been solved analytically with the aid of Mathematica
programm. A new class of exact solutions have been obtained by considering the
potentials o... | [
{
"created": "Sat, 22 Jun 2013 07:32:16 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Dec 2013 09:22:53 GMT",
"version": "v2"
}
] | 2013-12-12 | [
[
"Ali",
"Ahmad T",
""
],
[
"Rahaman",
"F",
""
]
] | Inhomogeneous Bianchi type-I cosmological model with electro-magnetic field based on Lyra geometry is investigated. Using separated method, the Einstein field equations have been solved analytically with the aid of Mathematica programm. A new class of exact solutions have been obtained by considering the potentials of ... |
2109.09769 | Konstantinos Kritos | Konstantinos Kritos and Joseph Silk | Mergers of Maximally Charged Primordial Black Holes | 13 pages, 3 figures | Phys.Rev.D 105 (2022) 6, 063011 | 10.1103/PhysRevD.105.063011 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Near-extremal primordial black holes stable over cosmological timescales may
constitute a significant fraction of the dark matter. Due to their charge the
coalescence rate of such black holes is enhanced inside clusters and the
non-extremal merger remnants are prone to Hawking evaporation. We demonstrate
that if thes... | [
{
"created": "Mon, 20 Sep 2021 18:02:55 GMT",
"version": "v1"
},
{
"created": "Mon, 30 May 2022 21:18:49 GMT",
"version": "v2"
},
{
"created": "Thu, 23 Jun 2022 15:35:40 GMT",
"version": "v3"
}
] | 2022-06-24 | [
[
"Kritos",
"Konstantinos",
""
],
[
"Silk",
"Joseph",
""
]
] | Near-extremal primordial black holes stable over cosmological timescales may constitute a significant fraction of the dark matter. Due to their charge the coalescence rate of such black holes is enhanced inside clusters and the non-extremal merger remnants are prone to Hawking evaporation. We demonstrate that if these ... |
1210.3804 | Deborah A. Konkowski | Deborah A. Konkowski and Thomas M. Helliwell | Quantum singularities in conformally static spacetimes | 7 pages, no figures, submitted to Proceedings of Relativity and
Gravitation: 100 years after Einstein in Prague, 25-29 June 2012, Prague,
Czech Republic | null | null | null | gr-qc | http://creativecommons.org/licenses/publicdomain/ | After a brief review of the standard definition and analysis of classical
singularities in general relativistic spacetimes, and of quantum singularities
in static spacetimes with timelike classical singularities, an extension of
quantum singularities to conformally static spacetimes is summarized and
applied to two t... | [
{
"created": "Sun, 14 Oct 2012 15:34:19 GMT",
"version": "v1"
}
] | 2012-10-16 | [
[
"Konkowski",
"Deborah A.",
""
],
[
"Helliwell",
"Thomas M.",
""
]
] | After a brief review of the standard definition and analysis of classical singularities in general relativistic spacetimes, and of quantum singularities in static spacetimes with timelike classical singularities, an extension of quantum singularities to conformally static spacetimes is summarized and applied to two tes... |
1207.3959 | Radouane Gannouji | Amna Ali, Radouane Gannouji, Md. Wali Hossain, M. Sami | Light mass galileons: Cosmological dynamics, mass screening and
observational constraints | 9 pages, 8 figures, minor clarifications added, final version to
appear in PLB | Phys.Lett. B718 (2012) 5-14 | 10.1016/j.physletb.2012.10.009 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we examine the cosmological viability of a light mass galileon
field consistent with local gravity constraints. The minimal,
L_3=\Box\phi(\partial_\mu \phi)^2, massless galileon field requires an
additional term in order to give rise to a viable ghost free late time
acceleration of Universe. The desire... | [
{
"created": "Tue, 17 Jul 2012 11:50:08 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Oct 2012 01:42:58 GMT",
"version": "v2"
}
] | 2014-06-11 | [
[
"Ali",
"Amna",
""
],
[
"Gannouji",
"Radouane",
""
],
[
"Hossain",
"Md. Wali",
""
],
[
"Sami",
"M.",
""
]
] | In this paper, we examine the cosmological viability of a light mass galileon field consistent with local gravity constraints. The minimal, L_3=\Box\phi(\partial_\mu \phi)^2, massless galileon field requires an additional term in order to give rise to a viable ghost free late time acceleration of Universe. The desired ... |
2405.13079 | Malihe Heydari-Fard | Mitra Darvishi, Malihe Heydari-Fard and Morteza Mohseni | On optical appearance of Einstein-Maxwell-{\AE}ther black holes
surrounded by various accretions | 21 pages, 13 figures | null | null | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | In this paper, we investigate the effects of the {\ae}ther field and the
electric charge on the observed shadow of two types of charged black holes in
the Einstein-Maxwell-{\AE}ther theory. By considering that the
Einstein-Maxwell-{\AE}ther black holes surrounded by the static/infalling
spherical accretion flows, as ... | [
{
"created": "Tue, 21 May 2024 05:23:06 GMT",
"version": "v1"
}
] | 2024-05-24 | [
[
"Darvishi",
"Mitra",
""
],
[
"Heydari-Fard",
"Malihe",
""
],
[
"Mohseni",
"Morteza",
""
]
] | In this paper, we investigate the effects of the {\ae}ther field and the electric charge on the observed shadow of two types of charged black holes in the Einstein-Maxwell-{\AE}ther theory. By considering that the Einstein-Maxwell-{\AE}ther black holes surrounded by the static/infalling spherical accretion flows, as we... |
0808.4080 | Cecilia Chirenti | Cecilia B. M. H. Chirenti and Luciano Rezzolla | On the ergoregion instability in rotating gravastars | 10 pages, 7 figures | Phys.Rev.D78:084011,2008 | 10.1103/PhysRevD.78.084011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The ergoregion instability is known to affect very compact objects that
rotate very rapidly and do not possess a horizon. We present here a detailed
analysis on the relevance of the ergoregion instability for the viability of
gravastars. Expanding on some recent results, we show that not all rotating
gravastars are u... | [
{
"created": "Fri, 29 Aug 2008 13:20:21 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Chirenti",
"Cecilia B. M. H.",
""
],
[
"Rezzolla",
"Luciano",
""
]
] | The ergoregion instability is known to affect very compact objects that rotate very rapidly and do not possess a horizon. We present here a detailed analysis on the relevance of the ergoregion instability for the viability of gravastars. Expanding on some recent results, we show that not all rotating gravastars are uns... |
gr-qc/9710061 | Jai-chan Hwang | J. Hwang | Gravitational Wave Spectrums from Pole-like Inflations based on
Generalized Gravity Theories | 11 pages, revtex, no figures | Class.Quant.Grav. 15 (1998) 1401-1413 | 10.1088/0264-9381/15/5/021 | null | gr-qc | null | We present a general and unified formulation which can handle the classical
evolution and quantum generation processes of the cosmological gravitational
wave in a broad class of generalized gravity theories. Applications are made in
several inflation models based on the scalar-tensor theory, the induced
gravity, and ... | [
{
"created": "Fri, 10 Oct 1997 16:50:15 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Hwang",
"J.",
""
]
] | We present a general and unified formulation which can handle the classical evolution and quantum generation processes of the cosmological gravitational wave in a broad class of generalized gravity theories. Applications are made in several inflation models based on the scalar-tensor theory, the induced gravity, and th... |
gr-qc/0605085 | Neil J. Cornish | Neil J. Cornish and Edward K. Porter | MCMC Exploration of Supermassive Black Hole Binary Inspirals | Submitted to CQG as a GWDAW-10 Conference Proceedings, 9 pages, 5
figures, Published Version | Class.Quant.Grav. 23 (2006) S761-S768 | 10.1088/0264-9381/23/19/S15 | null | gr-qc | null | The Laser Interferometer Space Antenna will be able to detect the inspiral
and merger of Super Massive Black Hole Binaries (SMBHBs) anywhere in the
Universe. Standard matched filtering techniques can be used to detect and
characterize these systems. Markov Chain Monte Carlo (MCMC) methods are ideally
suited to this a... | [
{
"created": "Mon, 15 May 2006 03:22:28 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Aug 2006 18:10:03 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Cornish",
"Neil J.",
""
],
[
"Porter",
"Edward K.",
""
]
] | The Laser Interferometer Space Antenna will be able to detect the inspiral and merger of Super Massive Black Hole Binaries (SMBHBs) anywhere in the Universe. Standard matched filtering techniques can be used to detect and characterize these systems. Markov Chain Monte Carlo (MCMC) methods are ideally suited to this and... |
1210.0981 | Narayan Banerjee | Koyel Ganguly, Narayan Banerjee | Spherically symmetric scalar field collapse | 10 pages, 4 figures; Accepted for publication in Pramana- Journal of
Physics, 2012 | null | 10.1007/s12043-012-0498-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that a scalar field, minimally coupled to gravity may have
collapsing modes even when the energy condition is violated, that is, for
$(\rho+3p)<0$. This result may be useful in the investigation of the possible
clustering of dark energy. All the examples dealt with have apparent horizons
which form before... | [
{
"created": "Wed, 3 Oct 2012 05:09:54 GMT",
"version": "v1"
}
] | 2015-06-11 | [
[
"Ganguly",
"Koyel",
""
],
[
"Banerjee",
"Narayan",
""
]
] | It is shown that a scalar field, minimally coupled to gravity may have collapsing modes even when the energy condition is violated, that is, for $(\rho+3p)<0$. This result may be useful in the investigation of the possible clustering of dark energy. All the examples dealt with have apparent horizons which form before t... |
1709.08978 | Moonju Hong | Moonju Hong | Motion of a Test Particle in the Reissner-Nordstrom Spacetime | 7 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper focuses on the motion of a test particle moving around the
Reissner-Nordstrom black hole. It deals with circular motion and radial motion
of the neutral massive test particles, and shortly handles circular motion of
the charged massive test particles. Both neutral and charged particles are
affected by blac... | [
{
"created": "Tue, 26 Sep 2017 12:39:24 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Oct 2017 14:04:42 GMT",
"version": "v2"
}
] | 2017-10-06 | [
[
"Hong",
"Moonju",
""
]
] | This paper focuses on the motion of a test particle moving around the Reissner-Nordstrom black hole. It deals with circular motion and radial motion of the neutral massive test particles, and shortly handles circular motion of the charged massive test particles. Both neutral and charged particles are affected by black ... |
gr-qc/9503015 | I\qigo Luis Egusquiza Egusquiza | I.L. Egusquiza (University of the Basque Country) | Self-adjoint extensions and Signature Change | 7 pages, REVTEX | Class.Quant.Grav. 12 (1995) L89-L92 | 10.1088/0264-9381/12/9/001 | null | gr-qc | null | We study the selfadjoint extensions of the spatial part of the D'Alembert
operator in a spacetime with two changes of signature. We identify a set of
boundary conditions, parametrised by U(2) matrices, which correspond to
Dirichlet boundary conditions for the fields, and from which we argue against
the suggestion tha... | [
{
"created": "Wed, 8 Mar 1995 19:23:00 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Egusquiza",
"I. L.",
"",
"University of the Basque Country"
]
] | We study the selfadjoint extensions of the spatial part of the D'Alembert operator in a spacetime with two changes of signature. We identify a set of boundary conditions, parametrised by U(2) matrices, which correspond to Dirichlet boundary conditions for the fields, and from which we argue against the suggestion that ... |
1909.11044 | Andrzej Krasi\'nski | Andrzej Krasi\'nski | Gamma radiation from areal radius minima in a quasi-spherical Szekeres
metric | 35 pages, 9 figures. Literature on GRBs updated, conclusions section
extended, small editorial corrections. This text matches the published one.
Length spuriously increased because of APPB page display | Acta Phys. Polon. B51, 483 (2020) | 10.5506/APhysPolB.51.483 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In previous papers it was shown that in a quasi-spherical Szekeres (QSS)
metric, impulses of gamma radiation can arise that have several properties in
common with the observed gamma-ray bursts. This happens when the bang-time
function $t_B(r)$ has a gate-shaped hump around the origin of the QSS region.
The gamma rays... | [
{
"created": "Tue, 24 Sep 2019 16:53:24 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Feb 2020 13:04:26 GMT",
"version": "v2"
}
] | 2020-04-22 | [
[
"Krasiński",
"Andrzej",
""
]
] | In previous papers it was shown that in a quasi-spherical Szekeres (QSS) metric, impulses of gamma radiation can arise that have several properties in common with the observed gamma-ray bursts. This happens when the bang-time function $t_B(r)$ has a gate-shaped hump around the origin of the QSS region. The gamma rays a... |
gr-qc/0504040 | Yu Tian | Yu Tian | De Sitter Thermodynamics from Diamonds's Temperature | 10 pages, 3 figures, LaTeX; v2: reorganized with a new section added
concerning a generalization of the GEMS picture from our result; v3: version
with minor corrections, to appear in JHEP | JHEP0506:045,2005 | 10.1088/1126-6708/2005/06/045 | null | gr-qc hep-th | null | The thermal time hypothesis proposed by Rovelli [1] regards the physical
basis for the flow of time as thermodynamical and provides a definition of the
temperature for some special cases. We verify this hypothesis in the case of de
Sitter spacetime by relating the uniformly accelerated observer in de Sitter
spacetime... | [
{
"created": "Mon, 11 Apr 2005 11:53:02 GMT",
"version": "v1"
},
{
"created": "Wed, 11 May 2005 07:11:51 GMT",
"version": "v2"
},
{
"created": "Thu, 16 Jun 2005 13:40:15 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Tian",
"Yu",
""
]
] | The thermal time hypothesis proposed by Rovelli [1] regards the physical basis for the flow of time as thermodynamical and provides a definition of the temperature for some special cases. We verify this hypothesis in the case of de Sitter spacetime by relating the uniformly accelerated observer in de Sitter spacetime t... |
gr-qc/9707043 | Takeshi Chiba | Takeshi Chiba, Shinji Mukohyama, and Takashi Nakamura | Anisotropy of the Cosmic Background Radiation implies the Violation of
the Strong Energy Condition in Bianchi type I Universe | 9 pages, to appear in Physics Letters B | Phys.Lett. B408 (1997) 47-51 | 10.1016/S0370-2693(97)00782-X | YITP-97-3 | gr-qc astro-ph | null | We consider the horizon problem in a homogeneous but anisotropic universe
(Bianchi type I). We show that the problem cannot be solved if (1) the matter
obeys the strong energy condition with the positive energy density and (2) the
Einstein equations hold. The strong energy condition is violated during
cosmological in... | [
{
"created": "Fri, 18 Jul 1997 12:35:05 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Chiba",
"Takeshi",
""
],
[
"Mukohyama",
"Shinji",
""
],
[
"Nakamura",
"Takashi",
""
]
] | We consider the horizon problem in a homogeneous but anisotropic universe (Bianchi type I). We show that the problem cannot be solved if (1) the matter obeys the strong energy condition with the positive energy density and (2) the Einstein equations hold. The strong energy condition is violated during cosmological infl... |
2204.03566 | Nicolas Arnaud | Nicolas Arnaud | LIGO-Virgo detector characterization and data quality (DetChar): from
the O3 performance to the O4 preparation | Contribution to the 2021 Gravitation session of the 55th Rencontres
de Moriond. On behalf of the LIGO and Virgo DetChar groups | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Detector characterization and data quality -- in short "DetChar" --
activities are key to optimize the performance of data-taking periods ("runs")
and to turn gravitational-wave (GW) candidates into confirmed events. The LIGO
and Virgo DetChar groups are active from the detector to the final analysis and
cover variou... | [
{
"created": "Thu, 7 Apr 2022 16:42:17 GMT",
"version": "v1"
}
] | 2022-04-08 | [
[
"Arnaud",
"Nicolas",
""
]
] | Detector characterization and data quality -- in short "DetChar" -- activities are key to optimize the performance of data-taking periods ("runs") and to turn gravitational-wave (GW) candidates into confirmed events. The LIGO and Virgo DetChar groups are active from the detector to the final analysis and cover various ... |
1404.3224 | Alessandro Fabbri | Paul R. Anderson, Roberto Balbinot, Alessandro Fabbri and Renaud
Parentani | Gray-body factor and infrared divergences in 1D BEC acoustic black holes | 6 pages, 2 figures. Final version. A double misprint in Eq. (21) of
the published version has been corrected here | Phys. Rev. D 90, 104044 (2014) | 10.1103/PhysRevD.90.104044 | null | gr-qc cond-mat.quant-gas hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the gray-body factor for a one-dimensional elongated
Bose-Einstein condensate (BEC) acoustic black hole with one horizon does not
vanish in the low-frequency ($\omega\to 0$) limit. This implies that the analog
Hawking radiation is dominated by the emission of an infinite number
($\frac{1}{\omega}$) o... | [
{
"created": "Fri, 11 Apr 2014 21:13:18 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Sep 2014 20:03:37 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Jan 2015 21:05:03 GMT",
"version": "v3"
}
] | 2015-01-12 | [
[
"Anderson",
"Paul R.",
""
],
[
"Balbinot",
"Roberto",
""
],
[
"Fabbri",
"Alessandro",
""
],
[
"Parentani",
"Renaud",
""
]
] | It is shown that the gray-body factor for a one-dimensional elongated Bose-Einstein condensate (BEC) acoustic black hole with one horizon does not vanish in the low-frequency ($\omega\to 0$) limit. This implies that the analog Hawking radiation is dominated by the emission of an infinite number ($\frac{1}{\omega}$) of ... |
1309.7464 | Shabbir Ghulam | Ghulam Shabbir, K S Mahomed, R J Moitsheki | A note on proper affine vector fields in special non static axially
symmetric Lorentzian manifolds | 13 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A study of proper affine vector fields in non static axially symmetric
space-times is given by using holonomy and decomposability, the rank of the 6X6
Riemann matrix and direct integration techniques. It is shown that the special
class of the above space-times admits proper affine vector fields.
| [
{
"created": "Sat, 28 Sep 2013 14:10:34 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Jan 2017 07:09:40 GMT",
"version": "v2"
}
] | 2017-01-11 | [
[
"Shabbir",
"Ghulam",
""
],
[
"Mahomed",
"K S",
""
],
[
"Moitsheki",
"R J",
""
]
] | A study of proper affine vector fields in non static axially symmetric space-times is given by using holonomy and decomposability, the rank of the 6X6 Riemann matrix and direct integration techniques. It is shown that the special class of the above space-times admits proper affine vector fields. |
1603.07742 | Parthapratim Pradhan | Parthapratim Pradhan | Area Functional Relation for 5D-Gauss-Bonnet-AdS Black Hole | Version accepted for publication in General Relativity and
Gravitation | General Relativity and Gravitation, August 2016, 48:116 | 10.1007/s10714-016-2109-3 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present \emph{area (or entropy) functional relation} for multi-horizons
five dimensional (5D) Einstein-Maxwell-Gauss-Bonnet-AdS Black Hole. It has been
observed by exact and explicit calculation that some complicated function of
two or three horizons area is \emph{mass-independent} whereas the entropy
product rela... | [
{
"created": "Thu, 24 Mar 2016 20:25:27 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Jul 2016 20:53:38 GMT",
"version": "v2"
}
] | 2016-08-03 | [
[
"Pradhan",
"Parthapratim",
""
]
] | We present \emph{area (or entropy) functional relation} for multi-horizons five dimensional (5D) Einstein-Maxwell-Gauss-Bonnet-AdS Black Hole. It has been observed by exact and explicit calculation that some complicated function of two or three horizons area is \emph{mass-independent} whereas the entropy product relati... |
1905.04133 | Metin Gurses | Metin Gurses and Yaghoub Heydarzade | New Classes of Spherically Symmetric, Inhomogeneous Cosmological Models | 35 pages one figure and two tables | Phys. Rev. D 100, 064048 (2019) | 10.1103/PhysRevD.100.064048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present two classes of inhomogeneous, spherically symmetric solutions of
the Einstein-Maxwell-Perfect Fluid field equations with cosmological constant
generalizing the Vaidya-Shah solution. Some special limits of our solution
reduce to the known inhomogeneous charged perfect fluid solutions of the
Einstein field e... | [
{
"created": "Fri, 10 May 2019 12:50:33 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Oct 2019 14:29:17 GMT",
"version": "v2"
}
] | 2019-10-09 | [
[
"Gurses",
"Metin",
""
],
[
"Heydarzade",
"Yaghoub",
""
]
] | We present two classes of inhomogeneous, spherically symmetric solutions of the Einstein-Maxwell-Perfect Fluid field equations with cosmological constant generalizing the Vaidya-Shah solution. Some special limits of our solution reduce to the known inhomogeneous charged perfect fluid solutions of the Einstein field equ... |
1806.05407 | Tomislav Prokopec | Lei-Hua Liu, Tomislav Prokopec and Alexei A. Starobinsky | Inflation in an effective gravitational model & asymptotic safety | 29 pages, 6 figures | Phys. Rev. D 98, 043505 (2018) | 10.1103/PhysRevD.98.043505 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an inflationary model motivated by quantum effects of
gravitational and matter fields near the Planck scale. Our Lagrangian is a
re-summed version of the effective Lagrangian recently obtained by Demmel,
Saueressig and Zanusso~\cite{Demmel:2015oqa} in the context of gravity as an
asymptotically safe theor... | [
{
"created": "Thu, 14 Jun 2018 08:09:29 GMT",
"version": "v1"
}
] | 2018-08-15 | [
[
"Liu",
"Lei-Hua",
""
],
[
"Prokopec",
"Tomislav",
""
],
[
"Starobinsky",
"Alexei A.",
""
]
] | We consider an inflationary model motivated by quantum effects of gravitational and matter fields near the Planck scale. Our Lagrangian is a re-summed version of the effective Lagrangian recently obtained by Demmel, Saueressig and Zanusso~\cite{Demmel:2015oqa} in the context of gravity as an asymptotically safe theory.... |
1412.7899 | Sijie Gao | Sijie Gao and Xiaobao Wang | Thin shell model revisited | 12 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reconsider some fundamental problems of the thin shell model. First, we
point out that the "cut and paste" construction does not guarantee a
well-defined manifold because there is no overlap of coordinates across the
shell. When one requires that the spacetime metric across the thin shell is
continuous, it also pr... | [
{
"created": "Fri, 26 Dec 2014 07:00:44 GMT",
"version": "v1"
}
] | 2014-12-30 | [
[
"Gao",
"Sijie",
""
],
[
"Wang",
"Xiaobao",
""
]
] | We reconsider some fundamental problems of the thin shell model. First, we point out that the "cut and paste" construction does not guarantee a well-defined manifold because there is no overlap of coordinates across the shell. When one requires that the spacetime metric across the thin shell is continuous, it also prov... |
2305.04496 | Yongqiang Wang | Yuan Yue, Peng-Bo Ding, Yong-Qiang Wang | Boson star with parity-odd symmetry in wormhole spacetime | 9 pages, 5 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we revisit the model of bosonic matter in the form of a free
complex scalar field with a nontrivial wormhole spacetime topology supported by
a free phantom field. We obtain a new type of boson star with wormhole
solutions, in which the complex scalar field possess full parity-odd symmetry
with respect ... | [
{
"created": "Mon, 8 May 2023 06:46:26 GMT",
"version": "v1"
}
] | 2023-05-09 | [
[
"Yue",
"Yuan",
""
],
[
"Ding",
"Peng-Bo",
""
],
[
"Wang",
"Yong-Qiang",
""
]
] | In this paper, we revisit the model of bosonic matter in the form of a free complex scalar field with a nontrivial wormhole spacetime topology supported by a free phantom field. We obtain a new type of boson star with wormhole solutions, in which the complex scalar field possess full parity-odd symmetry with respect to... |
1610.02498 | Adam Chudecki Dr | Adam Chudecki | On geometry of congruences of null strings in 4-dimensional complex and
real pseudo-Riemannian spaces | null | Journal of Mathematical Physics 58, 112502 (2017) | 10.1063/1.4994166 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | 4-dimensional spaces equipped with 2-dimensional (complex holomorphic or real
smooth) completely integrable distributions are considered. The integral
manifolds of such distributions are totally null and totally geodesics
2-dimensional surfaces which are called the null strings. Properties of
congruences (foliations)... | [
{
"created": "Sat, 8 Oct 2016 08:33:02 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Jul 2017 15:03:43 GMT",
"version": "v2"
}
] | 2017-11-21 | [
[
"Chudecki",
"Adam",
""
]
] | 4-dimensional spaces equipped with 2-dimensional (complex holomorphic or real smooth) completely integrable distributions are considered. The integral manifolds of such distributions are totally null and totally geodesics 2-dimensional surfaces which are called the null strings. Properties of congruences (foliations) o... |
gr-qc/0110097 | Mauricio Cataldo | P. Salgado, M. Cataldo and S.del Campo | Supergravity and the Poincare group | 6 pages, Latex | Phys.Rev.D65:084032,2002 | 10.1103/PhysRevD.65.084032 | null | gr-qc | null | An action for 3+1-dimensional supergravity genuinely invariant under the
Poincare supergroup is proposed. The construction of the action is carried out
considering a bosonic lagrangian invariant under both local Lorentz rotations
and local Poincare translations as well as under diffeomorphism, and therefore
the Poinc... | [
{
"created": "Tue, 23 Oct 2001 13:35:08 GMT",
"version": "v1"
}
] | 2009-02-11 | [
[
"Salgado",
"P.",
""
],
[
"Cataldo",
"M.",
""
],
[
"del Campo",
"S.",
""
]
] | An action for 3+1-dimensional supergravity genuinely invariant under the Poincare supergroup is proposed. The construction of the action is carried out considering a bosonic lagrangian invariant under both local Lorentz rotations and local Poincare translations as well as under diffeomorphism, and therefore the Poincar... |
1911.10560 | Pin Yu | Li Lai, Jiong-Yue Li and Pin Yu | On the rigidity of stationary charged black holes: small perturbations
of the non-extremal Kerr-Newman family | 36 pages, 4 figures | null | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove a perturbative result concerning the uniqueness of Kerr-Newman
family of black holes: given an asymptotically flat space-time with bifurcate
horizons, if it agrees with a non-extremal Kerr-Newman space-time
asymptotically flat at infinity and it is sufficiently close to the Kerr-Newman
family, then the space... | [
{
"created": "Sun, 24 Nov 2019 16:03:42 GMT",
"version": "v1"
}
] | 2019-11-26 | [
[
"Lai",
"Li",
""
],
[
"Li",
"Jiong-Yue",
""
],
[
"Yu",
"Pin",
""
]
] | We prove a perturbative result concerning the uniqueness of Kerr-Newman family of black holes: given an asymptotically flat space-time with bifurcate horizons, if it agrees with a non-extremal Kerr-Newman space-time asymptotically flat at infinity and it is sufficiently close to the Kerr-Newman family, then the space-t... |
gr-qc/0003075 | Santiago Esteban Perez Bergliaffa | F. Baldovin, M. Novello, S. E. Perez Bergliaffa, and J.M. Salim | A nongravitational wormhole | LaTex, 9 pages with 5 figures, minor changes, accepted for
publication in Class. Quantum Grav | Class.Quant.Grav. 17 (2000) 3265-3276 | 10.1088/0264-9381/17/16/311 | null | gr-qc physics.optics | null | Using the effective metric formalism for photons in a nonlinear
electromagnetic theory, we show that a certain field configuration in
Born-Infeld electromagnetism in flat spacetime can be interpreted as an
ultrastatic spherically symmetric wormhole. We also discuss some properties of
the effective metric that are val... | [
{
"created": "Fri, 17 Mar 2000 20:58:36 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Jun 2000 12:24:37 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Baldovin",
"F.",
""
],
[
"Novello",
"M.",
""
],
[
"Bergliaffa",
"S. E. Perez",
""
],
[
"Salim",
"J. M.",
""
]
] | Using the effective metric formalism for photons in a nonlinear electromagnetic theory, we show that a certain field configuration in Born-Infeld electromagnetism in flat spacetime can be interpreted as an ultrastatic spherically symmetric wormhole. We also discuss some properties of the effective metric that are valid... |
1906.01991 | Andrea Geralico | Donato Bini, Andrea Geralico, Gabriele Gionti, Wolfango Plastino,
Nelson Velandia | Scattering of uncharged particles in the field of two extremely charged
black holes | 15 pages, 4 figures | null | 10.1007/s10714-019-2642-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the motion of uncharged particles scattered by a binary system
consisting of extremely charged black holes in equilibrium as described by the
Majumdar-Papapetrou solution. We focus on unbound orbits confined to the plane
containing both black holes. We consider the two complementary situations of
parti... | [
{
"created": "Wed, 5 Jun 2019 12:42:25 GMT",
"version": "v1"
}
] | 2020-01-08 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Gionti",
"Gabriele",
""
],
[
"Plastino",
"Wolfango",
""
],
[
"Velandia",
"Nelson",
""
]
] | We investigate the motion of uncharged particles scattered by a binary system consisting of extremely charged black holes in equilibrium as described by the Majumdar-Papapetrou solution. We focus on unbound orbits confined to the plane containing both black holes. We consider the two complementary situations of particl... |
gr-qc/0010103 | Gabriel Claude | Gabriel Cl | Spontaneous loss of charge of the Reissner-Nordstrom black hole | 10 pages, no figure, accepted for publication in Physical review D | Phys.Rev. D63 (2001) 024010 | null | null | gr-qc | null | In this paper, we study by a functional method the vacuum instability of a
charged scalar field, when it is quantized in the background of the
Reissner-Nordtrom black hole; we also show that the first stage of the
evaporation process of the black hole can be driven by a Schwinger-like effect.
| [
{
"created": "Fri, 27 Oct 2000 11:22:41 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cl",
"Gabriel",
""
]
] | In this paper, we study by a functional method the vacuum instability of a charged scalar field, when it is quantized in the background of the Reissner-Nordtrom black hole; we also show that the first stage of the evaporation process of the black hole can be driven by a Schwinger-like effect. |
2111.01149 | Sousuke Noda | Sousuke Noda, Yasusada Nambu, Masaaki Takahashi, Takuma Tsukamoto | Alfv\'enic superradiance for a monopole magnetosphere around a Kerr
black hole | 9 pages, 7 figures; matches published version in PRD | Phys. Rev. D 105, 064018 (2022) | 10.1103/PhysRevD.105.064018 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore superradiance for Alfv\'en waves (Alfv\'enic superradiance) in an
axisymmetric rotating magnetosphere of a Kerr black hole within the force-free
approximation. On the equatorial plane of the Kerr spacetime, the Alfv\'en wave
equation is reduced to a one-dimensional Schr\"{o}dinger-type equation by
separati... | [
{
"created": "Mon, 1 Nov 2021 18:00:02 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Mar 2022 00:23:22 GMT",
"version": "v2"
}
] | 2022-03-14 | [
[
"Noda",
"Sousuke",
""
],
[
"Nambu",
"Yasusada",
""
],
[
"Takahashi",
"Masaaki",
""
],
[
"Tsukamoto",
"Takuma",
""
]
] | We explore superradiance for Alfv\'en waves (Alfv\'enic superradiance) in an axisymmetric rotating magnetosphere of a Kerr black hole within the force-free approximation. On the equatorial plane of the Kerr spacetime, the Alfv\'en wave equation is reduced to a one-dimensional Schr\"{o}dinger-type equation by separating... |
1108.4342 | Larry Ford | Jen-Tsung Hsiang, Chun-Hsien Wu, L.H. Ford and Kin-Wang Ng | Quantum Stress Tensor Fluctuation Effects in Inflationary Cosmology | 8 pages, proceedings of IARD 2010, Conference on Classical and
Quantum Relativistic Dynamics of Particles and Fields, Hualien, Taiwan May
2010 | J. Phys. Conf. Series 330, 012006 (2011) | 10.1088/1742-6596/330/1/012006 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review several related investigations of the effects of the quantum stress
tensor of a conformal field in inflationary cosmology. Particular attention
will be paid to the effects of quantum stress tensor fluctuations as a source
of density and tensor perturbations in inflationary models. These effects can
possibly... | [
{
"created": "Mon, 22 Aug 2011 15:18:54 GMT",
"version": "v1"
}
] | 2011-12-15 | [
[
"Hsiang",
"Jen-Tsung",
""
],
[
"Wu",
"Chun-Hsien",
""
],
[
"Ford",
"L. H.",
""
],
[
"Ng",
"Kin-Wang",
""
]
] | We review several related investigations of the effects of the quantum stress tensor of a conformal field in inflationary cosmology. Particular attention will be paid to the effects of quantum stress tensor fluctuations as a source of density and tensor perturbations in inflationary models. These effects can possibly d... |
2003.11831 | Rampei Kimura | A. Emir Gumrukcuoglu, Rampei Kimura, Kazuya Koyama | Massive gravity with non-minimal coupling | v2 : accepted for publication in PRD | Phys. Rev. D 101, 124021 (2020) | 10.1103/PhysRevD.101.124021 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose new massive gravity theories with 5 dynamical degrees of freedom.
We evade uniqueness theorems regarding the form of the kinetic and potential
terms by adopting the "generalized massive gravity" framework, where a global
translation invariance is broken. By exploiting the rotation symmetry in the
field spa... | [
{
"created": "Thu, 26 Mar 2020 11:00:27 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Jun 2020 08:36:34 GMT",
"version": "v2"
}
] | 2020-07-01 | [
[
"Gumrukcuoglu",
"A. Emir",
""
],
[
"Kimura",
"Rampei",
""
],
[
"Koyama",
"Kazuya",
""
]
] | We propose new massive gravity theories with 5 dynamical degrees of freedom. We evade uniqueness theorems regarding the form of the kinetic and potential terms by adopting the "generalized massive gravity" framework, where a global translation invariance is broken. By exploiting the rotation symmetry in the field space... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.