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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2106.07195 | Elisa Maggio | Elisa Maggio, Maarten van de Meent, Paolo Pani | Extreme mass-ratio inspirals around a spinning horizonless compact
object | 11+3 pages, 9 figures. v2: minor revisions to match the version in
PRD | null | 10.1103/PhysRevD.104.104026 | null | gr-qc astro-ph.HE hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | Extreme mass-ratio inspirals (EMRIs) detectable by the Laser Interferometer
Space Antenna are unique probes of the nature of supermassive compact objects.
We compute the gravitational-wave signal emitted by a stellar-mass compact
object in a circular equatorial orbit around a Kerr-like horizonless
supermassive object... | [
{
"created": "Mon, 14 Jun 2021 06:58:02 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Nov 2021 17:08:16 GMT",
"version": "v2"
}
] | 2021-11-11 | [
[
"Maggio",
"Elisa",
""
],
[
"van de Meent",
"Maarten",
""
],
[
"Pani",
"Paolo",
""
]
] | Extreme mass-ratio inspirals (EMRIs) detectable by the Laser Interferometer Space Antenna are unique probes of the nature of supermassive compact objects. We compute the gravitational-wave signal emitted by a stellar-mass compact object in a circular equatorial orbit around a Kerr-like horizonless supermassive object d... |
2302.03676 | LSC P&P Committtee | The LIGO Scientific Collaboration, the Virgo Collaboration, and the
KAGRA Collaboration: R. Abbott, H. Abe, F. Acernese, K. Ackley, S. Adhicary,
N. Adhikari, R. X. Adhikari, V. K. Adkins, V. B. Adya, C. Affeldt, D.
Agarwal, M. Agathos, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, T. Akutsu, S.
Albanesi, R. A. Alf... | Open data from the third observing run of LIGO, Virgo, KAGRA and GEO | 27 pages, 3 figures | null | 10.3847/1538-4365/acdc9f | LIGO-P2200316 | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The global network of gravitational-wave observatories now includes five
detectors, namely LIGO Hanford, LIGO Livingston, Virgo, KAGRA, and GEO 600.
These detectors collected data during their third observing run, O3, composed
of three phases: O3a starting in April of 2019 and lasting six months, O3b
starting in Nove... | [
{
"created": "Tue, 7 Feb 2023 18:53:02 GMT",
"version": "v1"
}
] | 2023-08-09 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"the KAGRA Collaboration",
"",
""
],
[
"Abbott",
"R.",
""
],
[
"Abe",
"H.",
""
],
[
"Acernese",
"F.",
""
],
[
"Ackley",
"K... | The global network of gravitational-wave observatories now includes five detectors, namely LIGO Hanford, LIGO Livingston, Virgo, KAGRA, and GEO 600. These detectors collected data during their third observing run, O3, composed of three phases: O3a starting in April of 2019 and lasting six months, O3b starting in Novemb... |
0707.0951 | Saibal Ray | F. Rahaman, Saibal Ray, M. Kalam and M. Sarker | Do Solar system tests permit higher dimensional general relativity? | 13 Latex pages and 11 figures with a few changes in the text and
reference | Int J Theor Phys (2009) 48: 3124--3138 | 10.1007/s10773-009-0110-2 | null | gr-qc | null | We perform a survey whether higher dimensional Schwarzschild space-time is
compatible with some of the solar system phenomena. As a test we examine five
well known solar system effects, viz., (1) Perihelion shift, (2) Bending of
light, (3) Gravitational redshift, (4) Gravitational time delay and (5) Motion
of test pa... | [
{
"created": "Fri, 6 Jul 2007 11:39:12 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Jul 2007 17:48:37 GMT",
"version": "v2"
}
] | 2009-10-21 | [
[
"Rahaman",
"F.",
""
],
[
"Ray",
"Saibal",
""
],
[
"Kalam",
"M.",
""
],
[
"Sarker",
"M.",
""
]
] | We perform a survey whether higher dimensional Schwarzschild space-time is compatible with some of the solar system phenomena. As a test we examine five well known solar system effects, viz., (1) Perihelion shift, (2) Bending of light, (3) Gravitational redshift, (4) Gravitational time delay and (5) Motion of test part... |
1712.01168 | LVC Publications | The LIGO Scientific Collaboration and the Virgo Collaboration: B. P.
Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams,
P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Afrough, B. Agarwal,
M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P.
Ajith, B. Allen,... | Constraints on cosmic strings using data from the first Advanced LIGO
observing run | Physical Review D, in-press | Phys. Rev. D 97, 102002 (2018) | 10.1103/PhysRevD.97.102002 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cosmic strings are topological defects which can be formed in GUT-scale phase
transitions in the early universe. They are also predicted to form in the
context of string theory. The main mechanism for a network of Nambu-Goto cosmic
strings to lose energy is through the production of loops and the subsequent
emission ... | [
{
"created": "Mon, 4 Dec 2017 16:01:54 GMT",
"version": "v1"
},
{
"created": "Wed, 2 May 2018 13:57:28 GMT",
"version": "v2"
}
] | 2018-05-16 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Acernese",
"F.",
""
],
[
"Ackley",
"K.",
... | Cosmic strings are topological defects which can be formed in GUT-scale phase transitions in the early universe. They are also predicted to form in the context of string theory. The main mechanism for a network of Nambu-Goto cosmic strings to lose energy is through the production of loops and the subsequent emission of... |
1402.4289 | Kentaro Somiya | Shinichiro Ueda, Nana Saito, Daniel Friedrich, Yoichi Aso, and Kentaro
Somiya (for the KAGRA collaboration) | Method to reduce excess noise of a detuned cavity for application in
KAGRA | 17 pages, 14 figures | Class.Quantum Grav. 31, 095003 (2014) | 10.1088/0264-9381/31/9/095003 | null | gr-qc physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Ground-based gravitational-wave detectors are based on high precision laser
interferometry. One promising technique to improve the detector's sensitivity
is the detuning of an optical cavity, which enhances the signal at around
certain frequencies for target astronomical sources. The detuning, however,
involves techn... | [
{
"created": "Tue, 18 Feb 2014 10:58:58 GMT",
"version": "v1"
}
] | 2020-07-06 | [
[
"Ueda",
"Shinichiro",
"",
"for the KAGRA collaboration"
],
[
"Saito",
"Nana",
"",
"for the KAGRA collaboration"
],
[
"Friedrich",
"Daniel",
"",
"for the KAGRA collaboration"
],
[
"Aso",
"Yoichi",
"",
"for the KAGRA collaboration"
],
[... | Ground-based gravitational-wave detectors are based on high precision laser interferometry. One promising technique to improve the detector's sensitivity is the detuning of an optical cavity, which enhances the signal at around certain frequencies for target astronomical sources. The detuning, however, involves technic... |
2205.11760 | Bobomurat Ahmedov | Bakhtiyor Narzilloev, Ibrar Hussain, Ahmadjon Abdujabbarov and
Bobomurat Ahmedov | Optical Properties of an Axially Symmetric Black Hole in the Rastall
Gravity | Accepted for publication in The European Physical Journal Plus | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | This work is devoted to the study of the optical properties of the
charged-rotating-NUT-Kiselev (CRNK) black hole in the Rastall theory of
gravity. By investigating the motion of photons in the CRNK black hole
spacetime in the Rastall gravity we show that the deflection angle of photons
due to the gravitational lensi... | [
{
"created": "Tue, 24 May 2022 03:46:13 GMT",
"version": "v1"
}
] | 2022-05-25 | [
[
"Narzilloev",
"Bakhtiyor",
""
],
[
"Hussain",
"Ibrar",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
],
[
"Ahmedov",
"Bobomurat",
""
]
] | This work is devoted to the study of the optical properties of the charged-rotating-NUT-Kiselev (CRNK) black hole in the Rastall theory of gravity. By investigating the motion of photons in the CRNK black hole spacetime in the Rastall gravity we show that the deflection angle of photons due to the gravitational lensing... |
gr-qc/0410001 | Theodore A. Jacobson | C. Eling, T. Jacobson, and D. Mattingly | Einstein-Aether Theory | 17 pages, to appear in the Deserfest proceedings (World Scientific) | null | null | null | gr-qc | null | We review the status of "Einstein-Aether theory", a generally covariant
theory of gravity coupled to a dynamical, unit timelike vector field that
breaks local Lorentz symmetry. Aspects of waves, stars, black holes, and
cosmology are discussed, together with theoretical and observational
constraints. Open questions ar... | [
{
"created": "Thu, 30 Sep 2004 20:10:06 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Jan 2005 22:26:25 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Eling",
"C.",
""
],
[
"Jacobson",
"T.",
""
],
[
"Mattingly",
"D.",
""
]
] | We review the status of "Einstein-Aether theory", a generally covariant theory of gravity coupled to a dynamical, unit timelike vector field that breaks local Lorentz symmetry. Aspects of waves, stars, black holes, and cosmology are discussed, together with theoretical and observational constraints. Open questions are ... |
1006.4761 | Olga Babourova Valer'evna | Olga V. Babourova, Boris N. Frolov, Roman S. Kostkin | Dirac's scalar field as dark energy within the frameworks of conformal
theory of gravitation in Weyl-Cartan space | 5 pages, 0 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Equations of the conformal theory of gravity with a Dirac scalar field in a
Weyl-Cartan space-time have been derived. An exact solution of the equation for
a scalar field, which has kind of a decreasing exponential function, has been
found. This allows to explain a significant decrease (during of the period of
inflat... | [
{
"created": "Thu, 24 Jun 2010 11:54:57 GMT",
"version": "v1"
},
{
"created": "Sun, 27 Jun 2010 11:59:34 GMT",
"version": "v2"
}
] | 2010-06-29 | [
[
"Babourova",
"Olga V.",
""
],
[
"Frolov",
"Boris N.",
""
],
[
"Kostkin",
"Roman S.",
""
]
] | Equations of the conformal theory of gravity with a Dirac scalar field in a Weyl-Cartan space-time have been derived. An exact solution of the equation for a scalar field, which has kind of a decreasing exponential function, has been found. This allows to explain a significant decrease (during of the period of inflatio... |
1501.06404 | Alessandro Tronconi | Alexander Y. Kamenshchik, Alessandro Tronconi, Giovanni Venturi | Quantum Gravity and the Large Scale Anomaly | 17 pages, 3 figures; the analysis has been updated with the combined
Planck-BICEP2/Keck Array public data. Final version, accepted for publication
in JCAP | null | 10.1088/1475-7516/2015/04/046 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spectrum of primordial perturbations obtained by calculating the quantum
gravitational corrections to the dynamics of scalar perturbations is compared
with Planck 2013 and BICEP2/{\it Keck Array} public data. The quantum
gravitational effects are calculated in the context of a Wheeler-De Witt
approach and have qu... | [
{
"created": "Mon, 26 Jan 2015 14:12:18 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Apr 2015 08:27:16 GMT",
"version": "v2"
}
] | 2015-06-23 | [
[
"Kamenshchik",
"Alexander Y.",
""
],
[
"Tronconi",
"Alessandro",
""
],
[
"Venturi",
"Giovanni",
""
]
] | The spectrum of primordial perturbations obtained by calculating the quantum gravitational corrections to the dynamics of scalar perturbations is compared with Planck 2013 and BICEP2/{\it Keck Array} public data. The quantum gravitational effects are calculated in the context of a Wheeler-De Witt approach and have quit... |
1702.04212 | Jaume Haro | Jaume de Haro and Llibert Arest\'e Sal\'o | Reheating constraints in quintessential inflation | Version accepted for publication in PRD | Phys. Rev. D 95, 123501 (2017) | 10.1103/PhysRevD.95.123501 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the consequences of reheating in quintessential inflation. From
simple inflationary quintessential models introduced in cite{hap, hap2}, we
show that when the reheating is due to the production of heavy massive
particles conformally coupled with gravity, a viable model which matches with
the current observat... | [
{
"created": "Tue, 14 Feb 2017 14:03:31 GMT",
"version": "v1"
},
{
"created": "Thu, 18 May 2017 10:00:51 GMT",
"version": "v2"
}
] | 2017-06-06 | [
[
"de Haro",
"Jaume",
""
],
[
"Saló",
"Llibert Aresté",
""
]
] | We study the consequences of reheating in quintessential inflation. From simple inflationary quintessential models introduced in cite{hap, hap2}, we show that when the reheating is due to the production of heavy massive particles conformally coupled with gravity, a viable model which matches with the current observatio... |
1805.07266 | Justin Vines | Batoul Banihashemi, Justin Vines | Gravitomagnetic tidal effects in gravitational waves from neutron star
binaries | 15 pages | Phys. Rev. D 101, 064003 (2020) | 10.1103/PhysRevD.101.064003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves emitted by coalescing binary systems containing neutron
stars (or other compact objects) carry signatures of the stars' internal
equation of state, notably, through the influence of tidal deformations during
the binary's inspiral stage. While the leading-order tidal effects for
post-Newtonian bina... | [
{
"created": "Fri, 18 May 2018 15:03:38 GMT",
"version": "v1"
}
] | 2020-03-11 | [
[
"Banihashemi",
"Batoul",
""
],
[
"Vines",
"Justin",
""
]
] | Gravitational waves emitted by coalescing binary systems containing neutron stars (or other compact objects) carry signatures of the stars' internal equation of state, notably, through the influence of tidal deformations during the binary's inspiral stage. While the leading-order tidal effects for post-Newtonian binari... |
1109.1873 | Naresh Kumar | \'Eanna \'E. Flanagan, Naresh Kumar, Ira Wasserman, R. Ali Vanderveld | Luminosity distance in Swiss cheese cosmology with randomized voids. II.
Magnification probability distributions | null | Phys.Rev.D85:023510,2012 | 10.1103/PhysRevD.85.023510 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the fluctuations in luminosity distances due to gravitational
lensing by large scale (> 35 Mpc) structures, specifically voids and sheets. We
use a simplified "Swiss cheese" model consisting of a \Lambda -CDM
Friedman-Robertson-Walker background in which a number of randomly distributed
non-overlapping spher... | [
{
"created": "Fri, 9 Sep 2011 02:05:24 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Nov 2011 19:23:56 GMT",
"version": "v2"
}
] | 2015-05-30 | [
[
"Flanagan",
"Éanna É.",
""
],
[
"Kumar",
"Naresh",
""
],
[
"Wasserman",
"Ira",
""
],
[
"Vanderveld",
"R. Ali",
""
]
] | We study the fluctuations in luminosity distances due to gravitational lensing by large scale (> 35 Mpc) structures, specifically voids and sheets. We use a simplified "Swiss cheese" model consisting of a \Lambda -CDM Friedman-Robertson-Walker background in which a number of randomly distributed non-overlapping spheric... |
2007.13223 | Genly Le\'on | Andronikos Paliathanasis (DUT, Durban and Chile Austral U., Valdivia),
Genly Leon (Catolica del Norte U.) | Asymptotic behavior of $N$-fields Chiral Cosmology | 10 pages, no figures | null | 10.1140/epjc/s10052-020-8423-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a detailed analysis for the asymptotic behaviour for the
multi-scalar field Chiral cosmological scenario. We present the asymptotic
behaviour for the one-field, two-fields and three-fields Chiral models. From
these results, and deriving conserved quantities, we present a Theorem for the
$N$-fields model fo... | [
{
"created": "Sun, 26 Jul 2020 21:36:10 GMT",
"version": "v1"
}
] | 2020-10-28 | [
[
"Paliathanasis",
"Andronikos",
"",
"DUT, Durban and Chile Austral U., Valdivia"
],
[
"Leon",
"Genly",
"",
"Catolica del Norte U."
]
] | We perform a detailed analysis for the asymptotic behaviour for the multi-scalar field Chiral cosmological scenario. We present the asymptotic behaviour for the one-field, two-fields and three-fields Chiral models. From these results, and deriving conserved quantities, we present a Theorem for the $N$-fields model for ... |
gr-qc/0102095 | null | Soumitra SenGupta and Saurabh Sur | Spherically Symmetric Solutions of Gravitational Field Equations in
Kalb-Ramond Background | 8 pages, Revtex, No figure | Phys.Lett.B521:350-356,2001 | 10.1016/S0370-2693(01)01238-2 | null | gr-qc | null | Static spherically symmetric solution in a background spacetime with torsion
is derived explicitly. The torsion considered here is identified with the field
strength of a second rank antisymmetric tensor field namely the Kalb-Ramond
field and the proposed solution therefore has much significance in a string
inspired ... | [
{
"created": "Thu, 22 Feb 2001 07:11:05 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"SenGupta",
"Soumitra",
""
],
[
"Sur",
"Saurabh",
""
]
] | Static spherically symmetric solution in a background spacetime with torsion is derived explicitly. The torsion considered here is identified with the field strength of a second rank antisymmetric tensor field namely the Kalb-Ramond field and the proposed solution therefore has much significance in a string inspired gr... |
1408.0107 | Emmanuil Saridakis | Georgios Kofinas (Aegean U.), Emmanuel N. Saridakis (Natl. Tech. U.,
Athens & Valparaiso U., Catolica) | Cosmological applications of $F(T,T_G)$ gravity | 10 pages, 4 figures, version published in Phys. Rev. D. arXiv admin
note: substantial text overlap with arXiv:1404.2249 | Phys. Rev. D 90, 084045 (2014) | 10.1103/PhysRevD.90.084045 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the cosmological applications of $F(T,T_G)$ gravity, which is
a novel modified gravitational theory based on the torsion invariant $T$ and
the teleparallel equivalent of the Gauss-Bonnet term $T_{G}$. $F(T,T_{G})$
gravity differs from both $F(T)$ theories as well as from $F(R,G)$ class of
curvature mod... | [
{
"created": "Fri, 1 Aug 2014 09:15:43 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Oct 2014 14:44:53 GMT",
"version": "v2"
}
] | 2014-10-29 | [
[
"Kofinas",
"Georgios",
"",
"Aegean U."
],
[
"Saridakis",
"Emmanuel N.",
"",
"Natl. Tech. U.,\n Athens & Valparaiso U., Catolica"
]
] | We investigate the cosmological applications of $F(T,T_G)$ gravity, which is a novel modified gravitational theory based on the torsion invariant $T$ and the teleparallel equivalent of the Gauss-Bonnet term $T_{G}$. $F(T,T_{G})$ gravity differs from both $F(T)$ theories as well as from $F(R,G)$ class of curvature modif... |
1707.09398 | Marcus Khuri | Ye Sle Cha, Marcus A. Khuri | Transformations of Asymptotically AdS Hyperbolic Initial Data and
Associated Geometric Inequalities | 38 pages | Gen. Relativity Gravitation, 50 (2018), no. 1, 50:3 | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct transformations which take asymptotically AdS hyperbolic initial
data into asymptotically flat initial data, and which preserve relevant
physical quantities. This is used to derive geometric inequalities in the
asymptotically AdS hyperbolic setting from counterparts in the asymptotically
flat realm, when... | [
{
"created": "Fri, 28 Jul 2017 20:11:29 GMT",
"version": "v1"
}
] | 2017-12-22 | [
[
"Cha",
"Ye Sle",
""
],
[
"Khuri",
"Marcus A.",
""
]
] | We construct transformations which take asymptotically AdS hyperbolic initial data into asymptotically flat initial data, and which preserve relevant physical quantities. This is used to derive geometric inequalities in the asymptotically AdS hyperbolic setting from counterparts in the asymptotically flat realm, whenev... |
gr-qc/0412046 | Michael Maziashvili | Michael Maziashvili | Modified Friedman scenario from the Wheeler-DeWitt equation | 2 pages, 1 figure | Phys.Rev. D71 (2005) 027505 | 10.1103/PhysRevD.71.027505 | null | gr-qc | null | We consider the possible modification of the Friedman equation due to
operator ordering parameter entering the Wheeler-DeWitt equation.
| [
{
"created": "Fri, 10 Dec 2004 10:46:34 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Jan 2005 12:38:00 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Maziashvili",
"Michael",
""
]
] | We consider the possible modification of the Friedman equation due to operator ordering parameter entering the Wheeler-DeWitt equation. |
1912.00475 | Vasilis Oikonomou | S.D. Odintsov, V.K. Oikonomou | Constant-roll $k$-Inflation Dynamics | CQG Accepted | null | 10.1088/1361-6382/ab5c9d | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we shall investigate the phenomenological implications of the
constant-roll condition on a $k$-Inflation theory of gravity. The latter
theories are particularly promising, since these remained robust to the results
of GW170817, since these have a gravitational wave speed $c_T=1$ in natural
units. We shal... | [
{
"created": "Sun, 1 Dec 2019 18:55:41 GMT",
"version": "v1"
}
] | 2020-01-29 | [
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this work we shall investigate the phenomenological implications of the constant-roll condition on a $k$-Inflation theory of gravity. The latter theories are particularly promising, since these remained robust to the results of GW170817, since these have a gravitational wave speed $c_T=1$ in natural units. We shall ... |
1308.5072 | Iain Brown | Iain A. Brown, Alan A. Coley, D. Leigh Herman and Joey Latta | On the physical effects of consistent cosmological averaging | 20 pages, 2 figures, RevTeX | Phys. Rev. D 88, 083523 (2013) | 10.1103/PhysRevD.88.083523 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use cosmological perturbation theory to study the backreaction effects of
a self-consistent and well-defined cosmological averaging on the dynamics and
the evolution of the Universe. Working with a perturbed
Friedman-Lemaitre-Robertson-Walker Einstein-de Sitter cosmological solution in
a comoving volume-preserving... | [
{
"created": "Fri, 23 Aug 2013 08:47:03 GMT",
"version": "v1"
}
] | 2013-10-30 | [
[
"Brown",
"Iain A.",
""
],
[
"Coley",
"Alan A.",
""
],
[
"Herman",
"D. Leigh",
""
],
[
"Latta",
"Joey",
""
]
] | We use cosmological perturbation theory to study the backreaction effects of a self-consistent and well-defined cosmological averaging on the dynamics and the evolution of the Universe. Working with a perturbed Friedman-Lemaitre-Robertson-Walker Einstein-de Sitter cosmological solution in a comoving volume-preserving g... |
1610.07934 | Laura Bernard | Laura Bernard, Luc Blanchet, Alejandro Boh\'e, Guillaume Faye and
Sylvain Marsat | Energy and periastron advance of compact binaries on circular orbits at
the fourth post-Newtonian order | 31 pages, 1 figure, matches the published version | Phys. Rev. D 95, 044026 (2017) | 10.1103/PhysRevD.95.044026 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we revisit and complete our preceding work on the Fokker
Lagrangian describing the dynamics of compact binary systems at the fourth
post-Newtonian (4PN) order in harmonic coordinates. We clarify the impact of
the non-local character of the Fokker Lagrangian or the associated Hamiltonian
on both the con... | [
{
"created": "Tue, 25 Oct 2016 15:57:36 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Mar 2017 10:58:35 GMT",
"version": "v2"
}
] | 2017-03-28 | [
[
"Bernard",
"Laura",
""
],
[
"Blanchet",
"Luc",
""
],
[
"Bohé",
"Alejandro",
""
],
[
"Faye",
"Guillaume",
""
],
[
"Marsat",
"Sylvain",
""
]
] | In this paper, we revisit and complete our preceding work on the Fokker Lagrangian describing the dynamics of compact binary systems at the fourth post-Newtonian (4PN) order in harmonic coordinates. We clarify the impact of the non-local character of the Fokker Lagrangian or the associated Hamiltonian on both the conse... |
1204.4481 | N\'estor Ortiz | N\'estor Ortiz | Initial data giving rise to naked singularities in spherically symmetric
dust collapse | 5 pages, 5 figures, prepared for the proceedings of the IX Workshop
of the Gravitational and Mathematical Physics Division of the Mexican
Physical Society. Refereed version | AIP Conf.Proc. 1473 (2011) 49-53 | 10.1063/1.4748533 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The phase space corresponding to a particular four-parameter family of
initial data for the gravitational collapse of a spherically symmetric dust
cloud is investigated. In a certain limit of the parameters, this family
reproduces the case of homogenous mass density -constant mass distribution- and
zero initial veloc... | [
{
"created": "Thu, 19 Apr 2012 21:43:22 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Sep 2012 22:33:41 GMT",
"version": "v2"
}
] | 2015-03-20 | [
[
"Ortiz",
"Néstor",
""
]
] | The phase space corresponding to a particular four-parameter family of initial data for the gravitational collapse of a spherically symmetric dust cloud is investigated. In a certain limit of the parameters, this family reproduces the case of homogenous mass density -constant mass distribution- and zero initial velocit... |
gr-qc/0111109 | Serge Winitzki | Serge Winitzki | Null Energy Condition Violations in Eternal Inflation | Talk given at COSMO-2001, Rovaniemi, Finland. 7 pages, 2 figures | null | null | null | gr-qc | null | The usual scenario of ``eternal inflation'' involves an approximately de
Sitter spacetime undergoing upward fluctuations of the local expansion rate
$H$. This spacetime requires frequent violations of the Null Energy Condition
(NEC). We investigate the fluctuations of the energy-momentum tensor of the
scalar field in... | [
{
"created": "Fri, 30 Nov 2001 00:45:24 GMT",
"version": "v1"
}
] | 2020-07-27 | [
[
"Winitzki",
"Serge",
""
]
] | The usual scenario of ``eternal inflation'' involves an approximately de Sitter spacetime undergoing upward fluctuations of the local expansion rate $H$. This spacetime requires frequent violations of the Null Energy Condition (NEC). We investigate the fluctuations of the energy-momentum tensor of the scalar field in d... |
gr-qc/9910031 | Esposito Giampiero | Giampiero Esposito and Cosimo Stornaiolo | New Gauge Conditions in General Relativity: What Can We Learn from Them? | 6 pages, Revtex. Talk given at the Conference "Constrained Dynamics
and Quantum Gravity, QG99", Villasimius (Sardinia, Italy), September 13-17,
1999 | Nucl.Phys.Proc.Suppl. 88 (2000) 365-368 | 10.1016/S0920-5632(00)00803-3 | DSF preprint 99/34 | gr-qc | null | The construction of conformally invariant gauge conditions for Maxwell and
Einstein theories on a manifold M is found to involve two basic ingredients.
First, covariant derivatives of a linear gauge (e.g. Lorenz or de Donder),
completely contracted with the tensor field representing the metric on the
vector bundle of... | [
{
"created": "Fri, 8 Oct 1999 17:19:34 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Esposito",
"Giampiero",
""
],
[
"Stornaiolo",
"Cosimo",
""
]
] | The construction of conformally invariant gauge conditions for Maxwell and Einstein theories on a manifold M is found to involve two basic ingredients. First, covariant derivatives of a linear gauge (e.g. Lorenz or de Donder), completely contracted with the tensor field representing the metric on the vector bundle of t... |
1508.06704 | Gabriel Herczeg | Gabriel Herczeg | Parity Horizons in Shape Dynamics | 26 pages, 4 figures, some typos and formatting issues fixed | 2016 Class. Quantum Grav. 33 225002 | 10.1088/0264-9381/33/22/225002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I introduce the notion of a parity horizon, and show that many simple
solutions of shape dynamics possess them. I show that the event horizons of the
known asymptotically flat black hole solutions of shape dynamics are parity
horizons and that this notion of parity implies that these horizons possess a
notion of CPT ... | [
{
"created": "Thu, 27 Aug 2015 02:31:48 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Nov 2016 21:58:18 GMT",
"version": "v2"
},
{
"created": "Fri, 17 Feb 2017 23:07:14 GMT",
"version": "v3"
}
] | 2017-02-21 | [
[
"Herczeg",
"Gabriel",
""
]
] | I introduce the notion of a parity horizon, and show that many simple solutions of shape dynamics possess them. I show that the event horizons of the known asymptotically flat black hole solutions of shape dynamics are parity horizons and that this notion of parity implies that these horizons possess a notion of CPT in... |
1001.1039 | Metin Gurses | Metin Gurses | Killing Vector Fields in Three Dimensions: A Method to Solve Massive
Gravity Field Equations | 25 pages, some changes made and some references added, to be
published in Classical and Quantum Gravity | Class.Quant.Grav.27:205018,2010 | 10.1088/0264-9381/27/20/205018 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Killing vector fields in three dimensions play important role in the
construction of the related spacetime geometry. In this work we show that when
a three dimensional geometry admits a Killing vector field then the Ricci
tensor of the geometry is determined in terms of the Killing vector field and
its scalars. In th... | [
{
"created": "Thu, 7 Jan 2010 09:28:23 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Jan 2010 08:28:13 GMT",
"version": "v2"
},
{
"created": "Wed, 28 Jul 2010 06:36:51 GMT",
"version": "v3"
},
{
"created": "Thu, 29 Jul 2010 16:31:01 GMT",
"version": "v4"
}
] | 2014-11-20 | [
[
"Gurses",
"Metin",
""
]
] | Killing vector fields in three dimensions play important role in the construction of the related spacetime geometry. In this work we show that when a three dimensional geometry admits a Killing vector field then the Ricci tensor of the geometry is determined in terms of the Killing vector field and its scalars. In this... |
0905.2437 | Robert Beig | Robert Beig, Bernd G. Schmidt | Helical Solutions in Scalar Gravity | 11 pages | Gen.Rel.Grav.41:2031-2043,2009 | 10.1007/s10714-009-0836-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct solutions, for small values of $G$ and angular frequency
$\Omega$, of special relativistic scalar gravity coupled to ideally elastic
matter which have helical but no stationary or axial symmetry. They correspond
to a body without any symmetries in steady rotation around one of its axes of
inertia, or two... | [
{
"created": "Fri, 15 May 2009 19:54:24 GMT",
"version": "v1"
}
] | 2010-04-14 | [
[
"Beig",
"Robert",
""
],
[
"Schmidt",
"Bernd G.",
""
]
] | We construct solutions, for small values of $G$ and angular frequency $\Omega$, of special relativistic scalar gravity coupled to ideally elastic matter which have helical but no stationary or axial symmetry. They correspond to a body without any symmetries in steady rotation around one of its axes of inertia, or two b... |
2008.06891 | Sajal Mukherjee | Sajal Mukherjee and Sumanta Chakraborty | Multipole moments of compact objects with NUT charge: Theoretical and
observational implications | v2, 33 pages, 1 figure | Phys. Rev. D 102, 124058 (2020) | 10.1103/PhysRevD.102.124058 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the multipole moments of the Kerr-NUT black hole spacetime using
the Geroch-Hansen formalism, even though the spacetime is not asymptotically
flat. Intriguingly, in the presence of the NUT charge, the absence of
reflection symmetry about the equatorial plane, leads to mass and spin
multipole moments of all ... | [
{
"created": "Sun, 16 Aug 2020 12:01:54 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Dec 2020 12:56:48 GMT",
"version": "v2"
}
] | 2021-01-04 | [
[
"Mukherjee",
"Sajal",
""
],
[
"Chakraborty",
"Sumanta",
""
]
] | We derive the multipole moments of the Kerr-NUT black hole spacetime using the Geroch-Hansen formalism, even though the spacetime is not asymptotically flat. Intriguingly, in the presence of the NUT charge, the absence of reflection symmetry about the equatorial plane, leads to mass and spin multipole moments of all or... |
1801.00966 | Mikhail Zubkov Dr | M.A.Zubkov | The black hole interior and the type II Weyl fermions | Latex, 14 pages | Modern Physics Letters A Vol. 33, Nos. 7 & 8 (2018) 1850047 | 10.1142/S0217732318500475 | null | gr-qc cond-mat.mes-hall hep-lat hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was proposed recently that the black hole may undergo a transition to the
state, where inside the horizon the Fermi surface is formed that reveals an
analogy with the recently discovered type II Weyl semimetals. In this scenario
the low energy effective theory outside of the horizon is the Standard Model,
which de... | [
{
"created": "Wed, 3 Jan 2018 11:46:23 GMT",
"version": "v1"
},
{
"created": "Sat, 17 Mar 2018 19:55:24 GMT",
"version": "v2"
}
] | 2018-04-12 | [
[
"Zubkov",
"M. A.",
""
]
] | It was proposed recently that the black hole may undergo a transition to the state, where inside the horizon the Fermi surface is formed that reveals an analogy with the recently discovered type II Weyl semimetals. In this scenario the low energy effective theory outside of the horizon is the Standard Model, which desc... |
1205.0315 | Kiyoshi Shiraishi | Kiyoshi Shiraishi | The Friedmann Universe and Compact Internal Spaces in Higher-Dimensional
Gravity Theories | 8 pages, no figure | Prog. Theor. Phys. 76 (1986) 321-324 | 10.1143/PTP.76.321 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider gravity theories in $4+N$ dimensions which are governed by the
Lagrangian written as an extended Gauss-Bonnet density. We can find a naturally
generalized Einstein gravity where the maximal symmetric compactification leads
to vanishing four-dimensional cosmological constant in the static limit. A
later st... | [
{
"created": "Wed, 2 May 2012 04:11:35 GMT",
"version": "v1"
}
] | 2012-05-03 | [
[
"Shiraishi",
"Kiyoshi",
""
]
] | We consider gravity theories in $4+N$ dimensions which are governed by the Lagrangian written as an extended Gauss-Bonnet density. We can find a naturally generalized Einstein gravity where the maximal symmetric compactification leads to vanishing four-dimensional cosmological constant in the static limit. A later stag... |
gr-qc/0410095 | Christian Klein | C. Klein | Binary black hole spacetimes with a helical Killing vector | to be published in Phys. Rev. D, minor corrections | Phys.Rev. D70 (2004) 124026 | 10.1103/PhysRevD.70.124026 | null | gr-qc | null | Binary black hole spacetimes with a helical Killing vector, which are
discussed as an approximation for the early stage of a binary system, are
studied in a projection formalism. In this setting the four dimensional
Einstein equations are equivalent to a three dimensional gravitational theory
with a $SL(2,\mathbb{C})... | [
{
"created": "Tue, 19 Oct 2004 20:30:42 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Oct 2004 09:06:23 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Klein",
"C.",
""
]
] | Binary black hole spacetimes with a helical Killing vector, which are discussed as an approximation for the early stage of a binary system, are studied in a projection formalism. In this setting the four dimensional Einstein equations are equivalent to a three dimensional gravitational theory with a $SL(2,\mathbb{C})/S... |
1611.01777 | Glenn Barnich | Glenn Barnich, Pujian Mao, Romain Ruzziconi | Conserved currents in the Cartan formulation of general relativity | 14 pages, Proceedings of the workshop "About various kinds of
interactions" in honour of Philippe Spindel, 4 & 5 June 2015, Mons, Belgium | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the expressions for the local, on-shell closed co-dimension 2 forms
in the Cartan formulation of general relativity and explicitly show their
equivalence to those of the metric formulation.
| [
{
"created": "Sun, 6 Nov 2016 13:31:49 GMT",
"version": "v1"
}
] | 2016-11-08 | [
[
"Barnich",
"Glenn",
""
],
[
"Mao",
"Pujian",
""
],
[
"Ruzziconi",
"Romain",
""
]
] | We derive the expressions for the local, on-shell closed co-dimension 2 forms in the Cartan formulation of general relativity and explicitly show their equivalence to those of the metric formulation. |
gr-qc/9311030 | Stephen P. Braham | Stephen P. Braham | A Kucha\v{r} Hypertime Formalism For Cylindrically Symmetric Spacetimes
With Interacting Scalar Fields | 5 pages, LaTeX, UBCTP-93-024 | Phys.Rev. D49 (1994) 5606-5608 | 10.1103/PhysRevD.49.5606 | null | gr-qc hep-th | null | The Kucha\v{r} canonical transformation for vacuum geometrodynamics in the
presence of cylindrical symmetry is applied to a general non-vacuum case. The
resulting constraints are highly non-linear and non-local in the momenta
conjugate to the Kucha\v{r} embedding variables. However, it is demonstrated
that the constr... | [
{
"created": "Wed, 17 Nov 1993 20:51:35 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Braham",
"Stephen P.",
""
]
] | The Kucha\v{r} canonical transformation for vacuum geometrodynamics in the presence of cylindrical symmetry is applied to a general non-vacuum case. The resulting constraints are highly non-linear and non-local in the momenta conjugate to the Kucha\v{r} embedding variables. However, it is demonstrated that the constrai... |
2211.01888 | Andrea Antonelli | Andrea Antonelli | Accurate waveform models for gravitational-wave astrophysics: synergetic
approaches from analytical relativity | PhD Thesis. Contains novel results in Section 1.3.2 regarding the
derivation of the N3LO SO dynamics. Sections 2 to 6 are arXiv1901.07102,
arXiv:1907.11597, arXiv:2003.11391, arXiv:2010.02018, arXiv:2104.01897,
respectively | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave (GW) astrophysics is a field in full blossom. Since the
landmark detection of GWs from a binary black hole on September 14th 2015,
several compact-object binaries have been reported by the LIGO-Virgo
collaboration. Such events carry astrophysical and cosmological information
ranging from an underst... | [
{
"created": "Thu, 3 Nov 2022 15:20:53 GMT",
"version": "v1"
}
] | 2022-11-04 | [
[
"Antonelli",
"Andrea",
""
]
] | Gravitational-wave (GW) astrophysics is a field in full blossom. Since the landmark detection of GWs from a binary black hole on September 14th 2015, several compact-object binaries have been reported by the LIGO-Virgo collaboration. Such events carry astrophysical and cosmological information ranging from an understan... |
gr-qc/9911122 | Andrii Neronov | A. Yu. Neronov | Cosmological models with one extra dimension | 13 pages, 2 figures | Phys.Lett. B472 (2000) 273 | 10.1016/S0370-2693(99)01416-1 | null | gr-qc hep-th | null | We consider cosmological models in which a homogeneous isotropic universe is
embedded as a 3+1 dimensional surface into a 4+1 dimensional manifold. The size
of the extra dimension depends on time. It is small compared to the size of the
universe only if the energy of gravitational self-interaction of the universe
thr... | [
{
"created": "Tue, 30 Nov 1999 19:03:04 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Neronov",
"A. Yu.",
""
]
] | We consider cosmological models in which a homogeneous isotropic universe is embedded as a 3+1 dimensional surface into a 4+1 dimensional manifold. The size of the extra dimension depends on time. It is small compared to the size of the universe only if the energy of gravitational self-interaction of the universe throu... |
1010.2879 | Piotr Jaranowski | Andrzej Pisarski, Piotr Jaranowski, Maciej Pietka | Banks of templates for directed searches of gravitational waves from
spinning neutron stars | RevTeX 4-1, 15 pages, 5 figures | Phys.Rev.D83:043001,2011 | 10.1103/PhysRevD.83.043001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct efficient banks of templates suitable for directed searches of
almost monochromatic gravitational waves originating from spinning nuetron
stars in our Galaxy in data being collected by currently operating
interferometric detectors. We thus assume that the position of the
gravitational-wave source in the ... | [
{
"created": "Thu, 14 Oct 2010 11:22:09 GMT",
"version": "v1"
}
] | 2011-02-15 | [
[
"Pisarski",
"Andrzej",
""
],
[
"Jaranowski",
"Piotr",
""
],
[
"Pietka",
"Maciej",
""
]
] | We construct efficient banks of templates suitable for directed searches of almost monochromatic gravitational waves originating from spinning nuetron stars in our Galaxy in data being collected by currently operating interferometric detectors. We thus assume that the position of the gravitational-wave source in the sk... |
1101.0368 | Yurii Ignatyev | Yu.G.Ignatyev, D.Yu.Ignatyev | A Kinetics of non-equilibrium Universe. III. Stability of
non-equilibrium scenario | 11 pages, 9 figures | Gravitation & Cosmology, Vol. 14, No 4, 2008, p. 309-313 | 10.1134/S0202289308040038 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An influence of initial distribution nonequilibrium parameters on
thermodynamical equilibrium recovery processes in early Universe under the
assumption of elementary particles' scaling of interactions in range of
superhigh energies is researched.
| [
{
"created": "Sat, 1 Jan 2011 20:08:29 GMT",
"version": "v1"
}
] | 2015-05-20 | [
[
"Ignatyev",
"Yu. G.",
""
],
[
"Ignatyev",
"D. Yu.",
""
]
] | An influence of initial distribution nonequilibrium parameters on thermodynamical equilibrium recovery processes in early Universe under the assumption of elementary particles' scaling of interactions in range of superhigh energies is researched. |
gr-qc/9506040 | Patricio Anibal Letelier | Valdir B. Bezerra and Patricio S. Letelier | Loop Variables for a Class of Conical Spacetimes | 17 pages, LATEX | J.Math.Phys. 37 (1996) 6271-6282 | 10.1063/1.531775 | null | gr-qc | null | Loop variables are used to describe the presence of topological defects in
spacetime. In particular we study the dependence of the holonomy transformation
on angular momentum and torsion for a multi-chiral cone. We also compute the
holonomies for multiple moving crossed cosmic strings and two plane topological
defect... | [
{
"created": "Tue, 20 Jun 1995 21:53:38 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Bezerra",
"Valdir B.",
""
],
[
"Letelier",
"Patricio S.",
""
]
] | Loop variables are used to describe the presence of topological defects in spacetime. In particular we study the dependence of the holonomy transformation on angular momentum and torsion for a multi-chiral cone. We also compute the holonomies for multiple moving crossed cosmic strings and two plane topological defects-... |
1510.06853 | Ryotaro Kase | Ryotaro Kase, Shinji Tsujikawa, and Antonio De Felice | Cosmology with a successful Vainshtein screening in theories beyond
Horndeski | 15 pages, 8 figures | Phys. Rev. D 93, 024007 (2016) | 10.1103/PhysRevD.93.024007 | YITP-15-88 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a dark energy model where a scalar field $\phi$ has nonlinear
self-interactions in the presence of a dilatonic coupling with the Ricci
scalar. This belongs to a sub-class of theories beyond Horndeski, which
accommodates covariant Galileons and Brans-Dicke theories as specific cases. We
derive conditions un... | [
{
"created": "Fri, 23 Oct 2015 08:19:42 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Jan 2016 12:03:02 GMT",
"version": "v2"
}
] | 2016-01-11 | [
[
"Kase",
"Ryotaro",
""
],
[
"Tsujikawa",
"Shinji",
""
],
[
"De Felice",
"Antonio",
""
]
] | We propose a dark energy model where a scalar field $\phi$ has nonlinear self-interactions in the presence of a dilatonic coupling with the Ricci scalar. This belongs to a sub-class of theories beyond Horndeski, which accommodates covariant Galileons and Brans-Dicke theories as specific cases. We derive conditions unde... |
0801.3637 | Sophie Pireaux Dr | S. Pireaux (1), B. Chauvineau (2), A. Hees (1) ((1) Observatoire Royal
de Belgique, Department 1, Brussels, Belgium; (2) Observatoire de la Cote
d'Azur, Department ARTEMIS, Grasse, France.) | Relativistic versus Newtonian orbit model: the Relativistic Motion
Integrator (RMI) software. Illustration with the LISA mission | 30 p., 17 figs, 0 table, submitted to Celestial Mechanics. Changes
made according to referee's comments: info provided on LISA TDI simulators,
new coauthor and annex on "Numerical estimate of the Christoffel Symbols",
additionnal references and other minor changes | null | null | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Relativistic Motion Integrator (RMI) consists in integrating numerically
the EXACT relativistic equations of motion, for a given metric (corresponding
to a gravitational field at first post-Newtonian order or higher), instead of
Newtonian equations plus relativistic corrections. The aim of the present paper
is to... | [
{
"created": "Wed, 23 Jan 2008 18:16:06 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Aug 2009 08:32:23 GMT",
"version": "v2"
}
] | 2012-07-04 | [
[
"Pireaux",
"S.",
""
],
[
"Chauvineau",
"B.",
""
],
[
"Hees",
"A.",
""
]
] | The Relativistic Motion Integrator (RMI) consists in integrating numerically the EXACT relativistic equations of motion, for a given metric (corresponding to a gravitational field at first post-Newtonian order or higher), instead of Newtonian equations plus relativistic corrections. The aim of the present paper is to v... |
1006.4185 | Tarun Biswas | Tarun Biswas | Through the Black Hole -- On Not Breaking Time Reversal Symmetry | 4 pages, 2 figures (PiCTeX, included in main file) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well-known that a particle falling into a black hole will definitely
reach the center in finite proper time if it enters the sphere of radius
$3r_{s}/2$ where $r_{s}$ is the Schwarzschild radius. It is usually assumed
that once the particle reaches the central singularity, it stops. Here it shall
be shown that ... | [
{
"created": "Mon, 21 Jun 2010 22:04:52 GMT",
"version": "v1"
}
] | 2010-06-23 | [
[
"Biswas",
"Tarun",
""
]
] | It is well-known that a particle falling into a black hole will definitely reach the center in finite proper time if it enters the sphere of radius $3r_{s}/2$ where $r_{s}$ is the Schwarzschild radius. It is usually assumed that once the particle reaches the central singularity, it stops. Here it shall be shown that th... |
gr-qc/0306070 | M. Blagojevic | M. Blagojevic and M. Vasilic | Asymptotic dynamics in 3D gravity with torsion | 16 pages, RevTeX, no figures | Phys.Rev. D68 (2003) 124007 | 10.1103/PhysRevD.68.124007 | null | gr-qc hep-th | null | We study the nature of boundary dynamics in the teleparallel 3D gravity. The
asymptotic field equations with anti-de Sitter boundary conditions yield only
two non-trivial boundary modes, related to a conformal field theory with
classical central charge. After showing that the teleparallel gravity can be
formulated as... | [
{
"created": "Mon, 16 Jun 2003 15:44:04 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Blagojevic",
"M.",
""
],
[
"Vasilic",
"M.",
""
]
] | We study the nature of boundary dynamics in the teleparallel 3D gravity. The asymptotic field equations with anti-de Sitter boundary conditions yield only two non-trivial boundary modes, related to a conformal field theory with classical central charge. After showing that the teleparallel gravity can be formulated as a... |
1304.5386 | Hristu Culetu | Hristu Culetu | On a de Sitter-like spacetime with cylindrical symmetry | 6 pages, no figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A curved static de Sitter-like metric is analyzed. The source of curvature is
rooted from a constant stress tensor with positive energy density and negative
pressures. All the curvature invariants are constant everywhere and the
geometry is conformally flat. The horizon surface gravity equals the parameter
$\omega$ f... | [
{
"created": "Fri, 19 Apr 2013 12:04:37 GMT",
"version": "v1"
}
] | 2013-04-22 | [
[
"Culetu",
"Hristu",
""
]
] | A curved static de Sitter-like metric is analyzed. The source of curvature is rooted from a constant stress tensor with positive energy density and negative pressures. All the curvature invariants are constant everywhere and the geometry is conformally flat. The horizon surface gravity equals the parameter $\omega$ fro... |
0711.3145 | Michele Maggiore | Michele Maggiore | The physical interpretation of the spectrum of black hole quasinormal
modes | 4 pages, 2 figures; v3: added references and comments. To appear in
Phys. Rev. Lett | Phys.Rev.Lett.100:141301,2008 | 10.1103/PhysRevLett.100.141301 | null | gr-qc hep-th | null | When a classical black hole is perturbed, its relaxation is governed by a set
of quasinormal modes with complex frequencies \omega= \omega_R+i\omega_I. We
show that this behavior is the same as that of a collection of damped harmonic
oscillators whose real frequencies are (\omega_R^2+\omega_I^2)^{1/2}, rather
than si... | [
{
"created": "Tue, 20 Nov 2007 14:58:33 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Nov 2007 14:31:04 GMT",
"version": "v2"
},
{
"created": "Thu, 13 Mar 2008 14:57:50 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Maggiore",
"Michele",
""
]
] | When a classical black hole is perturbed, its relaxation is governed by a set of quasinormal modes with complex frequencies \omega= \omega_R+i\omega_I. We show that this behavior is the same as that of a collection of damped harmonic oscillators whose real frequencies are (\omega_R^2+\omega_I^2)^{1/2}, rather than simp... |
2005.01507 | Cheng-Yong Zhang | Peng Liu, Chao Niu, Cheng-Yong Zhang | Linear instability of charged massless scalar perturbation in
regularized 4D charged Einstein-Gauss-Bonnet anti de-Sitter black holes | 23 pages, 12 figure, 1 table | Chin.Phys.C 45 (2021) 2, 025111 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the linear instability of the charged massless scalar perturbation
in regularized 4D charged Einstein-Gauss-Bonnet-AdS black holes by exploring
the quasinormal modes. We find that the linear instability is triggered by
superradiance. The charged massless scalar perturbation becomes more unstable
when increas... | [
{
"created": "Mon, 4 May 2020 14:20:14 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Apr 2021 06:08:32 GMT",
"version": "v2"
},
{
"created": "Fri, 1 Oct 2021 03:02:09 GMT",
"version": "v3"
}
] | 2021-10-04 | [
[
"Liu",
"Peng",
""
],
[
"Niu",
"Chao",
""
],
[
"Zhang",
"Cheng-Yong",
""
]
] | We study the linear instability of the charged massless scalar perturbation in regularized 4D charged Einstein-Gauss-Bonnet-AdS black holes by exploring the quasinormal modes. We find that the linear instability is triggered by superradiance. The charged massless scalar perturbation becomes more unstable when increasin... |
gr-qc/0505056 | Winfried Zimdahl | Winfried Zimdahl | Interacting Dark Energy and Cosmological Equations of State | 9 pages, to appear in the December 2005 special issue of
Int.J.Mod.Phys.D | Int.J.Mod.Phys. D14 (2005) 2319-2326 | 10.1142/S0218271805007784 | null | gr-qc astro-ph hep-ph | null | Interactions within the cosmic medium modify its equation of state. We
discuss implications of interacting dark energy models both for the spatially
homogenous background and for the perturbation dynamics.
| [
{
"created": "Thu, 12 May 2005 07:17:40 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Oct 2005 10:11:33 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Zimdahl",
"Winfried",
""
]
] | Interactions within the cosmic medium modify its equation of state. We discuss implications of interacting dark energy models both for the spatially homogenous background and for the perturbation dynamics. |
1702.03413 | Chen Wu | Chen Wu | Quasinormal modes of gravitational perturbation around some well-known
regular black holes | 21 pages, 3 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, the quasinormal modes of gravitational perturbation around
some well-known regular black holes were evaluated by using the WKB
approximation as well as the asymptotic iteration method. Through numerical
calculation, we make a detailed analysis of the gravitational QNM frequencies
by varying the charact... | [
{
"created": "Sat, 11 Feb 2017 11:46:24 GMT",
"version": "v1"
}
] | 2017-02-14 | [
[
"Wu",
"Chen",
""
]
] | In this paper, the quasinormal modes of gravitational perturbation around some well-known regular black holes were evaluated by using the WKB approximation as well as the asymptotic iteration method. Through numerical calculation, we make a detailed analysis of the gravitational QNM frequencies by varying the character... |
0906.1543 | Sujitkumar Chatterjee | D. Panigrahi, Ajanta Das, and S. Chatterjee | Alfven wave in higher dimensional space time | 12 pages, 3 figures | JCAP 0909:004,2009 | 10.1088/1475-7516/2009/09/004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Following the wellknown spacetime decomposition technique as applied to (d+1)
dimensions we write down the equations of magnetohydrodynamics (MHD) in a
spatially at generalised FRW universe. Assuming an equation of state for the
background cosmic fluid we find solutions in turn for acous- tic waves and also
for Alfve... | [
{
"created": "Mon, 8 Jun 2009 17:18:06 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jun 2009 13:35:21 GMT",
"version": "v2"
}
] | 2009-09-28 | [
[
"Panigrahi",
"D.",
""
],
[
"Das",
"Ajanta",
""
],
[
"Chatterjee",
"S.",
""
]
] | Following the wellknown spacetime decomposition technique as applied to (d+1) dimensions we write down the equations of magnetohydrodynamics (MHD) in a spatially at generalised FRW universe. Assuming an equation of state for the background cosmic fluid we find solutions in turn for acous- tic waves and also for Alfven ... |
gr-qc/0307097 | Wei Liang Qian | Zai-Xiong Shen, Bin Wang and Ru-Keng Su | Quasinormal Modes in three-dimensional time-dependent Anti-de Sitter
spacetime | 8 pages and 7 figures | Chin.Phys.Lett. 21 (2004) 428-431 | 10.1088/0256-307X/21/3/003 | null | gr-qc | null | The massless scalar wave propagation in the time-dependent BTZ black hole
background has been studied. It is shown that in the quasi-normal ringing both
the decay and oscillation time-scales are modified in the time-dependent
background.
| [
{
"created": "Wed, 23 Jul 2003 06:05:47 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Jul 2003 06:16:44 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Shen",
"Zai-Xiong",
""
],
[
"Wang",
"Bin",
""
],
[
"Su",
"Ru-Keng",
""
]
] | The massless scalar wave propagation in the time-dependent BTZ black hole background has been studied. It is shown that in the quasi-normal ringing both the decay and oscillation time-scales are modified in the time-dependent background. |
1712.06617 | Sumanta Chakraborty | Karthik Rajeev, Sumanta Chakraborty and T. Padmanabhan | Inverting a normal harmonic oscillator: Physical interpretation and
applications | Title changed; Material reorganised; More discussions added;
Published version | General Relativity and Gravitation 50, 116 (2018) | 10.1007/s10714-018-2438-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A harmonic oscillator with time-dependent mass $m(t)$ and a time-dependent
(squared) frequency $\omega^2(t)$ occurs in the modelling of several physical
systems. It is generally believed that systems, with $m(t)>0$ and
$\omega^2(t)>0$ (normal oscillator) are stable while systems with $m(t)>0$ and
$\omega^2(t)<0$ (inv... | [
{
"created": "Mon, 18 Dec 2017 19:02:12 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Aug 2018 09:33:55 GMT",
"version": "v2"
}
] | 2018-08-23 | [
[
"Rajeev",
"Karthik",
""
],
[
"Chakraborty",
"Sumanta",
""
],
[
"Padmanabhan",
"T.",
""
]
] | A harmonic oscillator with time-dependent mass $m(t)$ and a time-dependent (squared) frequency $\omega^2(t)$ occurs in the modelling of several physical systems. It is generally believed that systems, with $m(t)>0$ and $\omega^2(t)>0$ (normal oscillator) are stable while systems with $m(t)>0$ and $\omega^2(t)<0$ (inver... |
1811.05369 | Jibril Ben Achour | Jibril Ben Achour and Hongguang Liu | Hairy Schwarzschild-(A)dS black hole solutions in DHOST theories beyond
shift symmetry | 7 pages, mistake corrected, conclusion partially changed, concrete
examples added | Phys. Rev. D 99, 064042 (2019) | 10.1103/PhysRevD.99.064042 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the general conditions for a large family of shift symmetry
breaking degenerate higher order scalar-tensor (DHOST) theories to admit
stealth black hole solutions. Such black hole configurations correspond to
vacuum solutions of General Relativity and admit a scalar hair which does not
gravitate, revealing i... | [
{
"created": "Tue, 13 Nov 2018 15:43:52 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Nov 2018 15:24:37 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Jan 2019 07:35:30 GMT",
"version": "v3"
},
{
"created": "Fri, 25 Jan 2019 10:53:19 GMT",
"version": "v4"
}
] | 2019-04-03 | [
[
"Achour",
"Jibril Ben",
""
],
[
"Liu",
"Hongguang",
""
]
] | We derive the general conditions for a large family of shift symmetry breaking degenerate higher order scalar-tensor (DHOST) theories to admit stealth black hole solutions. Such black hole configurations correspond to vacuum solutions of General Relativity and admit a scalar hair which does not gravitate, revealing its... |
2010.10795 | Yuri Pavlov | A. A. Grib, Yu. V. Pavlov | Gravitational radiation as the bremsstrahlung of superheavy particles in
the early Universe | 8 pages, no figures | Universe 6 (2020) 188 | 10.3390/universe6100188 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The number of superheavy particles with the mass of the Grand Unification
scale with trans-Planckian energy created at the epoch of superheavy particle
creation from vacuum by the gravitation of the expanding Universe is
calculated. In later collisions of these particles gravitational radiation is
radiated playing th... | [
{
"created": "Wed, 21 Oct 2020 07:20:22 GMT",
"version": "v1"
}
] | 2020-10-22 | [
[
"Grib",
"A. A.",
""
],
[
"Pavlov",
"Yu. V.",
""
]
] | The number of superheavy particles with the mass of the Grand Unification scale with trans-Planckian energy created at the epoch of superheavy particle creation from vacuum by the gravitation of the expanding Universe is calculated. In later collisions of these particles gravitational radiation is radiated playing the ... |
1503.08448 | Vojtech Pravda | Sigbj{\o}rn Hervik, Tom\'a\v{s} M\'alek, Vojt\v{e}ch Pravda, Alena
Pravdov\'a | Type II universal spacetimes | 24 pages, matches published version in CQG | Class. Quantum Grav. 32: 245012, 2015 | 10.1088/0264-9381/32/24/245012 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study type II universal metrics of the Lorentzian signature. These metrics
simultaneously solve vacuum field equations of all theories of gravitation with
the Lagrangian being a polynomial curvature invariant constructed from the
metric, the Riemann tensor and its covariant derivatives of an arbitrary order.
We ... | [
{
"created": "Sun, 29 Mar 2015 15:38:08 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Apr 2015 12:49:11 GMT",
"version": "v2"
},
{
"created": "Fri, 8 Jan 2016 06:18:23 GMT",
"version": "v3"
}
] | 2016-01-11 | [
[
"Hervik",
"Sigbjørn",
""
],
[
"Málek",
"Tomáš",
""
],
[
"Pravda",
"Vojtěch",
""
],
[
"Pravdová",
"Alena",
""
]
] | We study type II universal metrics of the Lorentzian signature. These metrics simultaneously solve vacuum field equations of all theories of gravitation with the Lagrangian being a polynomial curvature invariant constructed from the metric, the Riemann tensor and its covariant derivatives of an arbitrary order. We prov... |
1610.01201 | Ayan Banerjee | Piyali Bhar, Tuhina Manna, Farook Rahaman and Ayan Banerjee | Dark energy stars: Stable configurations | 10 pages & 7 figures, Accepted for publication in Can.J.Phys. It
matches with the published version | Can.J.Phys. 96 (2018) 6, 594-602 | 10.1139/cjp-2017-0526 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In present paper a spherically symmetric stellar configuration has been
analyzed by assuming the matter distribution of the stellar configuration is
anisotropic in nature and compared with the realistic objects, namely, the low
mass X-ray binaries (LMXBs) and X-ray pulsars. The analytic solution has been
obtained by ... | [
{
"created": "Sun, 2 Oct 2016 19:46:54 GMT",
"version": "v1"
},
{
"created": "Sun, 10 Sep 2017 15:22:02 GMT",
"version": "v2"
}
] | 2021-08-26 | [
[
"Bhar",
"Piyali",
""
],
[
"Manna",
"Tuhina",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Banerjee",
"Ayan",
""
]
] | In present paper a spherically symmetric stellar configuration has been analyzed by assuming the matter distribution of the stellar configuration is anisotropic in nature and compared with the realistic objects, namely, the low mass X-ray binaries (LMXBs) and X-ray pulsars. The analytic solution has been obtained by ut... |
1709.10067 | Georgios Lioutas | Georgios Lioutas and Nikolaos Stergioulas | Universal and approximate relations for the gravitational-wave damping
timescale of $f$-modes in neutron stars | 14 pages, 8 figures, minor corrections to match published version in
General Relativity and Gravitation | Gen Relativ Gravit (2018) 50: 12 | 10.1007/s10714-017-2331-7 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Existing estimates of the gravitational-wave damping timescale of the
dominant quadrupole oscillation mode in the case of rapidly rotating stars are
based on using a Newtonian estimate for the energy of the mode, in combination
with the lowest-order post-Newtonian quadrupole formula for estimating the
gravitational-w... | [
{
"created": "Thu, 28 Sep 2017 17:14:58 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jan 2018 16:29:03 GMT",
"version": "v2"
}
] | 2018-01-10 | [
[
"Lioutas",
"Georgios",
""
],
[
"Stergioulas",
"Nikolaos",
""
]
] | Existing estimates of the gravitational-wave damping timescale of the dominant quadrupole oscillation mode in the case of rapidly rotating stars are based on using a Newtonian estimate for the energy of the mode, in combination with the lowest-order post-Newtonian quadrupole formula for estimating the gravitational-wav... |
gr-qc/9305003 | null | Jorma Louko | Holomorphic quantum mechanics with a quadratic Hamiltonian constraint | 37 pages, RevTeX v3.0, SU-GP-93/4-5 | Phys.Rev.D48:2708-2727,1993 | 10.1103/PhysRevD.48.2708 | null | gr-qc hep-th | null | A finite dimensional system with a quadratic Hamiltonian constraint is Dirac
quantized in holomorphic, antiholomorphic and mixed representations. A unique
inner product is found by imposing Hermitian conjugacy relations on an operator
algebra. The different representations yield drastically different Hilbert
spaces. ... | [
{
"created": "Mon, 3 May 1993 19:40:00 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Louko",
"Jorma",
""
]
] | A finite dimensional system with a quadratic Hamiltonian constraint is Dirac quantized in holomorphic, antiholomorphic and mixed representations. A unique inner product is found by imposing Hermitian conjugacy relations on an operator algebra. The different representations yield drastically different Hilbert spaces. In... |
gr-qc/0404110 | Dr Frederic Henry-Couannier | Frederic Henry-Couannier (CPPM) | Negative energies and time reversal in Quantum Field Theory | 21/04/2004 | null | null | null | gr-qc | null | The theoretical and phenomenological status of negative energies is reviewed
in Quantum Field theory leading to the conclusion that hopefully their
rehabilitation might only be completed in a modified general relativistic model
| [
{
"created": "Tue, 27 Apr 2004 11:37:43 GMT",
"version": "v1"
},
{
"created": "Mon, 3 May 2004 13:18:27 GMT",
"version": "v2"
},
{
"created": "Tue, 8 Jun 2004 15:54:10 GMT",
"version": "v3"
},
{
"created": "Mon, 12 Jul 2004 11:33:07 GMT",
"version": "v4"
},
{
"cre... | 2007-05-23 | [
[
"Henry-Couannier",
"Frederic",
"",
"CPPM"
]
] | The theoretical and phenomenological status of negative energies is reviewed in Quantum Field theory leading to the conclusion that hopefully their rehabilitation might only be completed in a modified general relativistic model |
gr-qc/0703097 | Fotini Markopoulou Kalamara | Fotini Markopoulou | New directions in Background Independent Quantum Gravity | Comments 26 pages. Contribution to "Approaches to Quantum Gravity -
toward a new understanding of space, time, and matter", edited by D. Oriti,
to be published by Cambridge University Press | null | null | null | gr-qc | null | We discuss the meaning of background independence in quantum theories of
gravity where geometry and gravity are emergent and illustrate the
possibilities using the framework of quantum causal histories.
| [
{
"created": "Tue, 20 Mar 2007 01:54:55 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Markopoulou",
"Fotini",
""
]
] | We discuss the meaning of background independence in quantum theories of gravity where geometry and gravity are emergent and illustrate the possibilities using the framework of quantum causal histories. |
2004.08223 | Adrian Kent | Adrian Kent (Centre for Quantum Information and Foundations, DAMTP,
University of Cambridge and Perimeter Institute) | Hodology | null | Found Phys 52, 119 (2022) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A hodological law causes the evolution of the universe to tend to follow
particular types of path. I give simple illustrations in toy models and discuss
how Kolmogorov complexity characterises the extent to which hodological laws
explain, rather than merely describe, data.
| [
{
"created": "Fri, 17 Apr 2020 13:09:22 GMT",
"version": "v1"
}
] | 2024-03-15 | [
[
"Kent",
"Adrian",
"",
"Centre for Quantum Information and Foundations, DAMTP,\n University of Cambridge and Perimeter Institute"
]
] | A hodological law causes the evolution of the universe to tend to follow particular types of path. I give simple illustrations in toy models and discuss how Kolmogorov complexity characterises the extent to which hodological laws explain, rather than merely describe, data. |
0912.0103 | Dario Zappala | M. Consoli, L. Pappalardo | Emergent gravity and ether-drift experiments | 21 pages, 1 table. Version accepted for publication in General
Relativity and Gravitation. | null | 10.1007/s10714-010-0999-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | According to several authors, gravity might be a long-wavelength phenomenon
emerging in some 'hydrodynamic limit' from the same physical, flat-space vacuum
viewed as a form of superfluid medium. In this framework, light might propagate
in an effective acoustic geometry and exhibit a tiny anisotropy that could be
meas... | [
{
"created": "Tue, 1 Dec 2009 09:09:47 GMT",
"version": "v1"
},
{
"created": "Tue, 4 May 2010 09:08:32 GMT",
"version": "v2"
}
] | 2015-05-14 | [
[
"Consoli",
"M.",
""
],
[
"Pappalardo",
"L.",
""
]
] | According to several authors, gravity might be a long-wavelength phenomenon emerging in some 'hydrodynamic limit' from the same physical, flat-space vacuum viewed as a form of superfluid medium. In this framework, light might propagate in an effective acoustic geometry and exhibit a tiny anisotropy that could be measur... |
1802.04916 | James van Meter | J. R. van Meter | Dark-matter-like solutions to Einstein's unified field equations | 13 pages, 2 figures | Phys. Rev. D 97, 044018 (2018) | 10.1103/PhysRevD.97.044018 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein originally proposed a nonsymmetric tensor field, with its symmetric
part associated with the spacetime metric and its antisymmetric part associated
with the electromagnetic field, as an approach to a unified field theory. Here
we interpret it more modestly as an alternative to Einstein-Maxwell theory,
approx... | [
{
"created": "Wed, 14 Feb 2018 01:28:50 GMT",
"version": "v1"
}
] | 2018-03-14 | [
[
"van Meter",
"J. R.",
""
]
] | Einstein originally proposed a nonsymmetric tensor field, with its symmetric part associated with the spacetime metric and its antisymmetric part associated with the electromagnetic field, as an approach to a unified field theory. Here we interpret it more modestly as an alternative to Einstein-Maxwell theory, approxim... |
gr-qc/0408080 | Richard Woodard | T. Brunier (CEA/Saclay), V. K. Onemli (Universite Paris XI) and R. P.
Woodard (University of Florida) | Two Loop Scalar Self-Mass during Inflation | 31 pages, 5 figures, revtex4, revised for publication with extended
list of references | Class.Quant.Grav.22:59-84,2005 | 10.1088/0264-9381/22/1/005 | UFIFT-QG-04-5 | gr-qc astro-ph hep-ph | null | We work in the locally de Sitter background of an inflating universe and
consider a massless, minimally coupled scalar with a quartic self-interaction.
We use dimensional regularization to compute the fully renormalized scalar
self-mass-squared at one and two loop order for a state which is released in
Bunch-Davies v... | [
{
"created": "Tue, 24 Aug 2004 14:06:25 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Nov 2004 00:47:07 GMT",
"version": "v2"
}
] | 2010-04-06 | [
[
"Brunier",
"T.",
"",
"CEA/Saclay"
],
[
"Onemli",
"V. K.",
"",
"Universite Paris XI"
],
[
"Woodard",
"R. P.",
"",
"University of Florida"
]
] | We work in the locally de Sitter background of an inflating universe and consider a massless, minimally coupled scalar with a quartic self-interaction. We use dimensional regularization to compute the fully renormalized scalar self-mass-squared at one and two loop order for a state which is released in Bunch-Davies vac... |
gr-qc/0107033 | Alberto Nicolis | Riccardo Apreda, Michele Maggiore, Alberto Nicolis, Antonio Riotto | Gravitational Waves from Electroweak Phase Transitions | 30 pages, 20 figures | Nucl.Phys. B631 (2002) 342-368 | 10.1016/S0550-3213(02)00264-X | UGVA-DPT 07-1096 | gr-qc astro-ph hep-ph | null | Gravitational waves are generated during first-order phase transitions,
either by turbolence or by bubble collisions. If the transition takes place at
temperatures of the order of the electroweak scale, the frequency of these
gravitational waves is today just within the band of the planned space
interferometer LISA. ... | [
{
"created": "Tue, 10 Jul 2001 15:34:45 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Apreda",
"Riccardo",
""
],
[
"Maggiore",
"Michele",
""
],
[
"Nicolis",
"Alberto",
""
],
[
"Riotto",
"Antonio",
""
]
] | Gravitational waves are generated during first-order phase transitions, either by turbolence or by bubble collisions. If the transition takes place at temperatures of the order of the electroweak scale, the frequency of these gravitational waves is today just within the band of the planned space interferometer LISA. We... |
1407.7792 | Sunil Kumar Tripathy Dr. | S. K. Tripathy and K. L. Mahanta | Cosmic Acceleration and Anisotropic models with Magnetic field | 19 pages, 3 figures, submitted to EPJ plus | EPJ Plus, 130 2 (2015) 30 | 10.1140/epjp/i2015-15030-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Plane symmetric cosmological models are investigated with or without any dark
energy components in the field equations. Keeping an eye on the recent
observational constraints concerning the accelerating phase of expansion of the
universe, the role of magnetic field is assessed. In the absence of dark energy
component... | [
{
"created": "Sun, 27 Jul 2014 17:17:22 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Dec 2014 13:27:14 GMT",
"version": "v2"
}
] | 2015-02-24 | [
[
"Tripathy",
"S. K.",
""
],
[
"Mahanta",
"K. L.",
""
]
] | Plane symmetric cosmological models are investigated with or without any dark energy components in the field equations. Keeping an eye on the recent observational constraints concerning the accelerating phase of expansion of the universe, the role of magnetic field is assessed. In the absence of dark energy components,... |
gr-qc/0507058 | Paul von der Heyde | Paul von der Heyde | The Cosmological Constant Emerging From Local Poincare Invariance | 5 pages | null | null | null | gr-qc astro-ph | null | The Poincare Gauge Theory of gravitation with a Lagrangian quadratic in the
field strengths is applied to a classical cosmological model. It predicts a
constant value of the non-riemannian curvature scalar, which acts as a
cosmological constant. As the value of the scalar depends on the context,
vacuum solutions may ... | [
{
"created": "Thu, 14 Jul 2005 17:37:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"von der Heyde",
"Paul",
""
]
] | The Poincare Gauge Theory of gravitation with a Lagrangian quadratic in the field strengths is applied to a classical cosmological model. It predicts a constant value of the non-riemannian curvature scalar, which acts as a cosmological constant. As the value of the scalar depends on the context, vacuum solutions may di... |
gr-qc/9310010 | Robert Mann | C. Alvarez and R.B. Mann | Local Position Invariance and Vacuum Energy Shifts | 7 pgs. WATPHYS-TH93/04 | null | null | null | gr-qc hep-ph | null | We discuss tests of the Einstein Equivalence Principle due to energies which
are purely quantum mechanical in origin. In particular, we consider using Lamb
Shift energies to test for possible quantum violations of Local Position
Invariance. (to appear in the Proceedings of the 5th Canadian Conference on
General Relat... | [
{
"created": "Wed, 6 Oct 1993 00:16:25 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Oct 1993 13:23:34 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Alvarez",
"C.",
""
],
[
"Mann",
"R. B.",
""
]
] | We discuss tests of the Einstein Equivalence Principle due to energies which are purely quantum mechanical in origin. In particular, we consider using Lamb Shift energies to test for possible quantum violations of Local Position Invariance. (to appear in the Proceedings of the 5th Canadian Conference on General Relativ... |
gr-qc/0703024 | Francisco Lobo | Christian G. Boehmer, Francisco S. N. Lobo | A new two-sphere singularity in general relativity | 17 pages, 3 figures | Int.J.Mod.Phys.D17:897-910,2008 | 10.1142/S0218271808012565 | null | gr-qc | null | The Florides solution, proposed as an alternative to the interior
Schwarzschild solution, represents a static and spherically symmetric geometry
with vanishing radial stresses. It is regular at the center, and is matched to
an exterior Schwarzschild solution. The specific case of a constant energy
density has been in... | [
{
"created": "Mon, 5 Mar 2007 12:21:11 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | The Florides solution, proposed as an alternative to the interior Schwarzschild solution, represents a static and spherically symmetric geometry with vanishing radial stresses. It is regular at the center, and is matched to an exterior Schwarzschild solution. The specific case of a constant energy density has been inte... |
2104.06848 | Panagiotis Mavrogiannis | Panagiotis Mavrogiannis, Christos G. Tsagas | Electromagnetic potentials in curved spacetimes | "Minor revision, to appear in CQG" | Class. Quantum Grav. 38 235002 (2021) | 10.1088/1361-6382/ac274d | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Electromagnetic potentials allow for an alternative description of the
Maxwell field, the electric and magnetic components of which emerge as
gradients of the vector and the scalar potential. We provide a general
relativistic analysis of these potentials, by deriving their wave equations in
an arbitrary Riemannian sp... | [
{
"created": "Wed, 14 Apr 2021 13:40:51 GMT",
"version": "v1"
},
{
"created": "Wed, 5 May 2021 11:16:17 GMT",
"version": "v2"
},
{
"created": "Thu, 23 Sep 2021 16:15:10 GMT",
"version": "v3"
}
] | 2022-04-01 | [
[
"Mavrogiannis",
"Panagiotis",
""
],
[
"Tsagas",
"Christos G.",
""
]
] | Electromagnetic potentials allow for an alternative description of the Maxwell field, the electric and magnetic components of which emerge as gradients of the vector and the scalar potential. We provide a general relativistic analysis of these potentials, by deriving their wave equations in an arbitrary Riemannian spac... |
1005.1116 | Kayll Lake | William Ballik and Kayll Lake | The volume of stationary black holes and the meaning of the surface
gravity | revtex4, 6 pages, 12 figures. Much expanded discussion | null | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The invariant four-volume $\mathcal{V}$ of a complete black hole (the volume
of the spacetime at and interior to the horizon) diverges. However, if one
considers the black hole set up by the gravitational collapse of an object, and
integrates only a finite time to the future of the collapse, the resultant
volume is w... | [
{
"created": "Fri, 7 May 2010 01:49:02 GMT",
"version": "v1"
},
{
"created": "Wed, 12 May 2010 12:49:27 GMT",
"version": "v2"
},
{
"created": "Tue, 1 Jun 2010 22:37:22 GMT",
"version": "v3"
}
] | 2010-06-03 | [
[
"Ballik",
"William",
""
],
[
"Lake",
"Kayll",
""
]
] | The invariant four-volume $\mathcal{V}$ of a complete black hole (the volume of the spacetime at and interior to the horizon) diverges. However, if one considers the black hole set up by the gravitational collapse of an object, and integrates only a finite time to the future of the collapse, the resultant volume is wel... |
0707.4188 | Jeffrey Winicour | H.-O. Kreiss, O. Reula, O. Sarbach, J. Winicour | Well-posed initial-boundary value problem for the harmonic Einstein
equations using energy estimates | More explanatory material and title, as will appear in the published
article in Classical and Quantum Gravity | null | 10.1088/0264-9381/24/23/017 | null | gr-qc | null | In recent work, we used pseudo-differential theory to establish conditions
that the initial-boundary value problem for second order systems of wave
equations be strongly well-posed in a generalized sense. The applications
included the harmonic version of the Einstein equations. Here we show that
these results can als... | [
{
"created": "Fri, 27 Jul 2007 21:49:40 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Oct 2007 15:58:27 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Kreiss",
"H. -O.",
""
],
[
"Reula",
"O.",
""
],
[
"Sarbach",
"O.",
""
],
[
"Winicour",
"J.",
""
]
] | In recent work, we used pseudo-differential theory to establish conditions that the initial-boundary value problem for second order systems of wave equations be strongly well-posed in a generalized sense. The applications included the harmonic version of the Einstein equations. Here we show that these results can also ... |
2302.11629 | Viktoria Kabel | Viktoria Kabel, \v{C}aslav Brukner, Wolfgang Wieland | Quantum Reference Frames at the Boundary of Spacetime | 33 pages, 4 figures. v2: updated to be closest to the PRD version
published in Nov. 2023 | Phys. Rev. D 108, 106022 (2023) | 10.1103/PhysRevD.108.106022 | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | An analysis is given of the local phase space of gravity coupled to matter to
second order in perturbation theory. Working in local regions with boundaries
at finite distance, we identify matter, Coulomb, and additional boundary modes.
The boundary modes take the role of reference frames for both diffeomorphisms
and ... | [
{
"created": "Wed, 22 Feb 2023 20:10:03 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Feb 2024 11:17:48 GMT",
"version": "v2"
}
] | 2024-02-09 | [
[
"Kabel",
"Viktoria",
""
],
[
"Brukner",
"Časlav",
""
],
[
"Wieland",
"Wolfgang",
""
]
] | An analysis is given of the local phase space of gravity coupled to matter to second order in perturbation theory. Working in local regions with boundaries at finite distance, we identify matter, Coulomb, and additional boundary modes. The boundary modes take the role of reference frames for both diffeomorphisms and in... |
1402.3201 | Timothy Clifton | Timothy Clifton, Daniele Gregoris and Kjell Rosquist | Piecewise Silence in Discrete Cosmological Models | 20 pages, 1 figure | Class. Quantum Grav. 31 (2014) 105012 | 10.1088/0264-9381/31/10/105012 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a family of cosmological models in which all mass is confined to
a regular lattice of identical black holes. By exploiting the reflection
symmetry about planes that bisect these lattices into identical halves, we are
able to consider the evolution of a number of geometrically distinguished
surfaces that e... | [
{
"created": "Thu, 13 Feb 2014 16:26:49 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Apr 2014 09:07:35 GMT",
"version": "v2"
}
] | 2015-06-18 | [
[
"Clifton",
"Timothy",
""
],
[
"Gregoris",
"Daniele",
""
],
[
"Rosquist",
"Kjell",
""
]
] | We consider a family of cosmological models in which all mass is confined to a regular lattice of identical black holes. By exploiting the reflection symmetry about planes that bisect these lattices into identical halves, we are able to consider the evolution of a number of geometrically distinguished surfaces that exi... |
0709.3863 | Paul Ullrich | Paul Ullrich | Exact and Perturbed Friedmann-Lemaitre Cosmologies | Masters Thesis, 159 pages, 11 figures, 8 appendices | null | null | null | gr-qc | null | In this thesis we first apply the 1+3 covariant description of general
relativity to analyze n-fluid Friedmann-Lemaitre (FL) cosmologies; that is,
homogeneous and isotropic cosmologies whose matter-energy content consists of n
non-interacting fluids. We are motivated to study FL models of this type as
observations su... | [
{
"created": "Tue, 25 Sep 2007 01:40:33 GMT",
"version": "v1"
}
] | 2007-09-26 | [
[
"Ullrich",
"Paul",
""
]
] | In this thesis we first apply the 1+3 covariant description of general relativity to analyze n-fluid Friedmann-Lemaitre (FL) cosmologies; that is, homogeneous and isotropic cosmologies whose matter-energy content consists of n non-interacting fluids. We are motivated to study FL models of this type as observations sugg... |
1211.5336 | Jaume Haro | Jaume de Haro and Jaume Amoros | Non-singular models of universes in teleparallel theories | 5 pages, no figures. Accepted for publication in Physical Review
Letters | Physical Review Letters 110, 071104 (2013) | 10.1103/PhysRevLett.110.071104 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Different models of universes are considered in the context of teleparallel
theories. Assuming that the universe is filled by a fluid with equation of
state (EoS) $P=-\rho-f(\rho)$, for different teleparallel theories and
different EoS we study its dynamics. Two particular cases are studied in
detail: in the first on... | [
{
"created": "Thu, 22 Nov 2012 17:12:46 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Jan 2013 10:40:20 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"de Haro",
"Jaume",
""
],
[
"Amoros",
"Jaume",
""
]
] | Different models of universes are considered in the context of teleparallel theories. Assuming that the universe is filled by a fluid with equation of state (EoS) $P=-\rho-f(\rho)$, for different teleparallel theories and different EoS we study its dynamics. Two particular cases are studied in detail: in the first one ... |
gr-qc/0502063 | Raul Vera | Malcolm A. H. MacCallum, Marc Mars and Raul Vera | Second order perturbations of rotating bodies in equilibrium; the
exterior vacuum problem | LaTeX, 6 pages, uses ere04.cls style, to appear in the proceedings of
the Spanish Relativity Meeting ERE'04 | null | null | null | gr-qc | null | We study the exterior vacuum problem for first and second order stationary
and axially symmetric perturbations of static bodies. The boundary conditions
and their compatibility for the existence of an asymptotically flat exterior
solution are discussed.
| [
{
"created": "Mon, 14 Feb 2005 12:29:57 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"MacCallum",
"Malcolm A. H.",
""
],
[
"Mars",
"Marc",
""
],
[
"Vera",
"Raul",
""
]
] | We study the exterior vacuum problem for first and second order stationary and axially symmetric perturbations of static bodies. The boundary conditions and their compatibility for the existence of an asymptotically flat exterior solution are discussed. |
0707.3843 | Massimo Tinto | Massimo Tinto, John W. Armstrong, and Frank B. Estabrook | Modulator noise suppression in the LISA Time-Delay Interferometric
combinations | 17 pages, 5 figures. Submitted to: Phys. Rev. D 15 | Class.Quant.Grav.25:015008,2008 | 10.1088/0264-9381/25/1/015008 | null | gr-qc | null | We previously showed how the measurements of some eighteen time series of
relative frequency or phase shifts could be combined (1) to cancel the phase
noise of the lasers, (2) to cancel the Doppler fluctuations due to non-inertial
motions of the six optical benches, and (3) to remove the phase noise of the
onboard re... | [
{
"created": "Wed, 25 Jul 2007 23:43:11 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Tinto",
"Massimo",
""
],
[
"Armstrong",
"John W.",
""
],
[
"Estabrook",
"Frank B.",
""
]
] | We previously showed how the measurements of some eighteen time series of relative frequency or phase shifts could be combined (1) to cancel the phase noise of the lasers, (2) to cancel the Doppler fluctuations due to non-inertial motions of the six optical benches, and (3) to remove the phase noise of the onboard refe... |
2112.12830 | Betti Hartmann | Yves Brihaye (Universit\'e de Mons, Belgium), and Betti Hartmann
(University College London, UK) | Boson stars and black holes with wavy scalar hair | Matches version accepted for publication in Phys. Rev. D apart from
Fig. 16 which is improved as compared to PRD version | null | 10.1103/PhysRevD.105.104063 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we follow up on the discovery of a new type of solution in the
Einstein-Maxwell system coupled minimally to a self-interacting complex scalar
field. For sufficiently large gravitational coupling and sufficiently small
electromagnetic coupling we demonstrate that boson stars as well as black holes
can c... | [
{
"created": "Thu, 23 Dec 2021 20:30:30 GMT",
"version": "v1"
},
{
"created": "Tue, 3 May 2022 08:58:02 GMT",
"version": "v2"
}
] | 2022-06-08 | [
[
"Brihaye",
"Yves",
"",
"Université de Mons, Belgium"
],
[
"Hartmann",
"Betti",
"",
"University College London, UK"
]
] | In this paper, we follow up on the discovery of a new type of solution in the Einstein-Maxwell system coupled minimally to a self-interacting complex scalar field. For sufficiently large gravitational coupling and sufficiently small electromagnetic coupling we demonstrate that boson stars as well as black holes can car... |
1306.5121 | Janusz Garecki Prof | Janusz Garecki | The canonical superenergy tensors and stability of the solutions to the
Einstein equations | 6 pages, no figures. Submitted for presentation on GR20 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Here we present a new method to study stability of the solutions to the
Einstein equations. This method uses the canonical superenergy tensors which
have been introduced in past in our papers.
| [
{
"created": "Fri, 21 Jun 2013 13:08:15 GMT",
"version": "v1"
}
] | 2013-06-24 | [
[
"Garecki",
"Janusz",
""
]
] | Here we present a new method to study stability of the solutions to the Einstein equations. This method uses the canonical superenergy tensors which have been introduced in past in our papers. |
2407.14542 | Bivudutta Mishra Dr. | I. V. Fomin, S. V. Chervon, L.K. Duchaniya, B. Mishra | The scalar-torsion gravity corrections in the first-order inflationary
models | 12 pages, 1 figure | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we consider the corrections to the cosmological models based on
the teleparallel equivalent of general relativity induced by the non-minimal
coupling between scalar field and torsion. To determine these corrections, we
consider a power-law parametrization of the deviations between the teleparallel
equiv... | [
{
"created": "Tue, 16 Jul 2024 06:29:51 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jul 2024 09:37:41 GMT",
"version": "v2"
}
] | 2024-07-26 | [
[
"Fomin",
"I. V.",
""
],
[
"Chervon",
"S. V.",
""
],
[
"Duchaniya",
"L. K.",
""
],
[
"Mishra",
"B.",
""
]
] | In this work, we consider the corrections to the cosmological models based on the teleparallel equivalent of general relativity induced by the non-minimal coupling between scalar field and torsion. To determine these corrections, we consider a power-law parametrization of the deviations between the teleparallel equival... |
1405.6066 | Andrzej Krasi\'nski | Andrzej Krasi\'nski | Accelerating expansion or inhomogeneity? Part 2: Mimicking acceleration
with the energy function in the Lema\^{\i}tre-Tolman model | 18 pages, 14 figures. Penultimate paragraph of Sec. XIII and Refs.
22, 23 added in response to referee's comments. Typos corrected. This text
matches the published version | Phys. Rev. D 90, 023524 (2014) | 10.1103/PhysRevD.90.023524 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is a continuation of the paper published in {\it Phys. Rev.} {\bf D89},
023520 (2014). It is investigated here how the luminosity distance -- redshift
relation $D_L(z)$ of the $\Lambda$CDM model is duplicated in the Lema\^{\i}tre
-- Tolman (L--T) model with $\Lambda = 0$, constant bang-time function $t_B$
and th... | [
{
"created": "Fri, 23 May 2014 14:04:21 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jul 2014 15:06:10 GMT",
"version": "v2"
}
] | 2014-07-23 | [
[
"Krasiński",
"Andrzej",
""
]
] | This is a continuation of the paper published in {\it Phys. Rev.} {\bf D89}, 023520 (2014). It is investigated here how the luminosity distance -- redshift relation $D_L(z)$ of the $\Lambda$CDM model is duplicated in the Lema\^{\i}tre -- Tolman (L--T) model with $\Lambda = 0$, constant bang-time function $t_B$ and the ... |
2111.10053 | Hirotaka Takahashi | Yusuke Sakai, Yousuke Itoh, Piljong Jung, Keiko Kokeyama, Chihiro
Kozakai, Katsuko T. Nakahira, Shoichi Oshino, Yutaka Shikano, Hirotaka
Takahashi, Takashi Uchiyama, Gen Ueshima, Tatsuki Washimi, Takahiro Yamamoto,
Takaaki Yokozawa | Unsupervised Learning Architecture for Classifying the Transient Noise
of Interferometric Gravitational-wave Detectors | 18 pages, 9 figures. Matches version published in Scientific Reports | Scientific Reports, 12, Article number: 9935 (2022) | 10.1038/s41598-022-13329-4 | JGW-P2113444 | gr-qc physics.data-an stat.ML | http://creativecommons.org/licenses/by/4.0/ | In the data obtained by laser interferometric gravitational wave detectors,
transient noise with non-stationary and non-Gaussian features occurs at a high
rate. This often results in problems such as detector instability and the
hiding and/or imitation of gravitational-wave signals. This transient noise has
various c... | [
{
"created": "Fri, 19 Nov 2021 05:37:06 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Jun 2022 10:37:08 GMT",
"version": "v2"
}
] | 2022-06-22 | [
[
"Sakai",
"Yusuke",
""
],
[
"Itoh",
"Yousuke",
""
],
[
"Jung",
"Piljong",
""
],
[
"Kokeyama",
"Keiko",
""
],
[
"Kozakai",
"Chihiro",
""
],
[
"Nakahira",
"Katsuko T.",
""
],
[
"Oshino",
"Shoichi",
""
],
[... | In the data obtained by laser interferometric gravitational wave detectors, transient noise with non-stationary and non-Gaussian features occurs at a high rate. This often results in problems such as detector instability and the hiding and/or imitation of gravitational-wave signals. This transient noise has various cha... |
gr-qc/9610006 | Yasunori Fujii | Yasunori Fujii | Role of Regularization in Quantum Corrections to the Scalar-Tensor
Theories of Gravity | Latex 12 pages, including 4 eps figures | Mod.Phys.Lett. A12 (1997) 371-380 | 10.1142/S0217732397000388 | null | gr-qc | null | We show that regularizing divergent integrals is crucially important when
applied to the loop diagrams corresponding to quantum corrections to the
coupling of the ``gravitational" scalar field due to the interaction among
matter fields. We use the method of continuous spacetime dimensions to
demonstrate that WEP is a... | [
{
"created": "Fri, 4 Oct 1996 02:17:55 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Fujii",
"Yasunori",
""
]
] | We show that regularizing divergent integrals is crucially important when applied to the loop diagrams corresponding to quantum corrections to the coupling of the ``gravitational" scalar field due to the interaction among matter fields. We use the method of continuous spacetime dimensions to demonstrate that WEP is a r... |
1302.3038 | Andrea Dapor | Andrea Dapor, Jerzy Lewandowski, Jacek Puchta | QFT on quantum spacetime: a compatible classical framework | 29 pages, v3. Replaced with revised version accepted in PRD | null | 10.1103/PhysRevD.87.104038 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a systematic classical framework to accommodate canonical
quantization of geometric and matter perturbations on a quantum homogeneous
isotropic flat spacetime. The existing approach of standard cosmological
perturbations is indeed proved to be good only up to first order in the
inhomogeneities, and only if... | [
{
"created": "Wed, 13 Feb 2013 10:19:50 GMT",
"version": "v1"
},
{
"created": "Fri, 10 May 2013 12:09:57 GMT",
"version": "v2"
},
{
"created": "Mon, 20 May 2013 12:21:55 GMT",
"version": "v3"
}
] | 2013-06-05 | [
[
"Dapor",
"Andrea",
""
],
[
"Lewandowski",
"Jerzy",
""
],
[
"Puchta",
"Jacek",
""
]
] | We develop a systematic classical framework to accommodate canonical quantization of geometric and matter perturbations on a quantum homogeneous isotropic flat spacetime. The existing approach of standard cosmological perturbations is indeed proved to be good only up to first order in the inhomogeneities, and only if t... |
1503.01929 | J. W. van Holten | M.P. Bogers and J.W. van Holten | Canonical D = 1 supergravity framework for FLRW cosmology | 14 pages, no figures | JCAP 05 (2015) 039 | 10.1088/1475-7516/2015/05/039 | Nikhef/2015-006 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct an extension of standard flat FLRW cosmology with matter,
possessing local D = 1, N = 1 proper-time supersymmetry. The fundamental
equation for the resulting mini-superspace models of quantum universes is a
Dirac-like analogue of the Friedmann and Wheeler-DeWitt equations. We provide
solutions of this eq... | [
{
"created": "Fri, 6 Mar 2015 12:18:44 GMT",
"version": "v1"
}
] | 2015-11-24 | [
[
"Bogers",
"M. P.",
""
],
[
"van Holten",
"J. W.",
""
]
] | We construct an extension of standard flat FLRW cosmology with matter, possessing local D = 1, N = 1 proper-time supersymmetry. The fundamental equation for the resulting mini-superspace models of quantum universes is a Dirac-like analogue of the Friedmann and Wheeler-DeWitt equations. We provide solutions of this equa... |
1903.05113 | Riccardo Sturani | Stefano Foffa (Geneva U.) and Riccardo Sturani (IIP, Natal) | Conservative dynamics of binary systems to fourth Post-Newtonian order
in the EFT approach I: Regularized Lagrangian | 25 pages, 2 figures. Minor modifications in v2, version accepted for
publication in PRD | Phys. Rev. D 100, 024047 (2019) | 10.1103/PhysRevD.100.024047 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within the framework of the effective field theory approach to the
post-Newtonian approximation to General Relativity, we report the so far
missing G^3 and G^4 sectors of the conservative two body dynamics at fourth
perturbative order for non-spinning compact objects. Following the standard
procedure, the exchange of... | [
{
"created": "Tue, 12 Mar 2019 18:03:36 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Aug 2019 19:44:25 GMT",
"version": "v2"
}
] | 2019-08-06 | [
[
"Foffa",
"Stefano",
"",
"Geneva U."
],
[
"Sturani",
"Riccardo",
"",
"IIP, Natal"
]
] | Within the framework of the effective field theory approach to the post-Newtonian approximation to General Relativity, we report the so far missing G^3 and G^4 sectors of the conservative two body dynamics at fourth perturbative order for non-spinning compact objects. Following the standard procedure, the exchange of g... |
1106.4400 | Antonio F. Ra\~nada | Antonio F. Ra\~nada and A. Tiemblo | The dynamical nature of time | 13 pages, no figures | Canadian Journal of Physics vol. 90, 931-937 (2012) | 10.1139/p2012-086 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is usually assumed that the "$t$" parameter in the equations of dynamics
can be identified with the indication of the pointer of a clock. Things are not
so easy, however. In fact, since the equations of motion can be written in
terms of $t$ but also of $t'=f(t)$, $f$ being any well behaved function, each
one of th... | [
{
"created": "Wed, 22 Jun 2011 09:06:04 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Jul 2011 11:57:06 GMT",
"version": "v2"
}
] | 2017-07-12 | [
[
"Rañada",
"Antonio F.",
""
],
[
"Tiemblo",
"A.",
""
]
] | It is usually assumed that the "$t$" parameter in the equations of dynamics can be identified with the indication of the pointer of a clock. Things are not so easy, however. In fact, since the equations of motion can be written in terms of $t$ but also of $t'=f(t)$, $f$ being any well behaved function, each one of thos... |
1803.10157 | Sandeep Aashish | Sandeep Aashish and Sukanta Panda | Covariant Effective Action for Antisymmetric Tensor Field | 7 pages, 1 figure, prd format; text improved, typos corrected,
references added, acknowledgement added; to appear in PRD | Phys. Rev. D 97, 125005 (2018) | 10.1103/PhysRevD.97.125005 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Covariant quantization of rank-2 antisymmetric fields is non-trivial due to
additional symmetries of the gauge parameters. We present an intuitive way to
deal with this additional symmetry of gauge parameters in terms of geometrical
understanding of field space. We generalize the DeWitt-Vilkovisky covariant
effective... | [
{
"created": "Tue, 27 Mar 2018 16:05:10 GMT",
"version": "v1"
},
{
"created": "Sun, 20 May 2018 08:31:17 GMT",
"version": "v2"
}
] | 2018-06-13 | [
[
"Aashish",
"Sandeep",
""
],
[
"Panda",
"Sukanta",
""
]
] | Covariant quantization of rank-2 antisymmetric fields is non-trivial due to additional symmetries of the gauge parameters. We present an intuitive way to deal with this additional symmetry of gauge parameters in terms of geometrical understanding of field space. We generalize the DeWitt-Vilkovisky covariant effective a... |
2105.08482 | Yuxuan Peng | Yuxuan Peng | New Topological Gauss-Bonnet Black Holes in Five Dimensions | 6pages, no figures, some references added in the 2nd version | Phys. Rev. D 104, 084004 (2021) | 10.1103/PhysRevD.104.084004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate vacuum static black hole solutions of Einstein-Gauss-Bonnet
gravity with a negative cosmological constant in five dimensions. These are
solutions with horizons of nontrivial topologies. The first one possesses a
horizon with the topology $S^1 \times H^2$, and a varying Gauss-Bonnet coupling
constant $\... | [
{
"created": "Tue, 18 May 2021 12:46:10 GMT",
"version": "v1"
},
{
"created": "Sun, 13 Jun 2021 07:41:23 GMT",
"version": "v2"
}
] | 2021-10-04 | [
[
"Peng",
"Yuxuan",
""
]
] | We investigate vacuum static black hole solutions of Einstein-Gauss-Bonnet gravity with a negative cosmological constant in five dimensions. These are solutions with horizons of nontrivial topologies. The first one possesses a horizon with the topology $S^1 \times H^2$, and a varying Gauss-Bonnet coupling constant $\al... |
gr-qc/0604044 | Carlo Rovelli | Eugenio Bianchi, Leonardo Modesto, Carlo Rovelli, Simone Speziale | Graviton propagator in loop quantum gravity | 41 pages, 6 figures | Class.Quant.Grav.23:6989-7028,2006 | 10.1088/0264-9381/23/23/024 | 10-04-2006 | gr-qc hep-ph hep-th | null | We compute some components of the graviton propagator in loop quantum
gravity, using the spinfoam formalism, up to some second order terms in the
expansion parameter.
| [
{
"created": "Mon, 10 Apr 2006 12:32:50 GMT",
"version": "v1"
},
{
"created": "Sat, 13 May 2006 21:31:20 GMT",
"version": "v2"
}
] | 2011-05-05 | [
[
"Bianchi",
"Eugenio",
""
],
[
"Modesto",
"Leonardo",
""
],
[
"Rovelli",
"Carlo",
""
],
[
"Speziale",
"Simone",
""
]
] | We compute some components of the graviton propagator in loop quantum gravity, using the spinfoam formalism, up to some second order terms in the expansion parameter. |
gr-qc/0204050 | P. A. Hogan | P. A. Hogan and E. M. O'Shea | Gravitational Wave Propagation in Isotropic Cosmologies | 27 pages, accepted for publication in Phys.Rev. D | Phys.Rev.D65:124017,2002; Erratum-ibid.D70:029902,2004 | 10.1103/PhysRevD.65.124017 10.1103/PhysRevD.70.029902 | null | gr-qc | null | We study the propagation of gravitational waves carrying arbitrary
information through isotropic cosmologies. The waves are modelled as small
perturbations of the background Robertson-Walker geometry. The perfect fluid
matter distribution of the isotropic background is, in general, modified by
small anisotropic stres... | [
{
"created": "Mon, 15 Apr 2002 14:43:33 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Hogan",
"P. A.",
""
],
[
"O'Shea",
"E. M.",
""
]
] | We study the propagation of gravitational waves carrying arbitrary information through isotropic cosmologies. The waves are modelled as small perturbations of the background Robertson-Walker geometry. The perfect fluid matter distribution of the isotropic background is, in general, modified by small anisotropic stresse... |
1310.2022 | Giorgio Carelli | N Beverini, M Allegrini, A Beghi, J Belfi, B. Bouhadef, M Calamai, G
Carelli, D Cuccato, A Di Virgilio, E Maccioni, A Ortolan, A. Porzio, R
Santagata, S Solimeno and A Tartaglia | Measuring general relativity effects in a terrestrial lab by means of
laser gyroscopes | Submitted to International Journal Laser Physics, 9 pages, 5 figure | null | 10.1088/1054-660X/24/7/074005 | null | gr-qc physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | GINGER is a proposed tridimensional array of laser gyroscopes with the aim of
measuring the Lense-Thirring effect, predicted by the General Relativity
theory, in a terrestrial laboratory environment. We discuss the required
accuracy, the methods to achieve it, and the preliminary experimental work in
this direction.
| [
{
"created": "Tue, 8 Oct 2013 07:52:30 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Beverini",
"N",
""
],
[
"Allegrini",
"M",
""
],
[
"Beghi",
"A",
""
],
[
"Belfi",
"J",
""
],
[
"Bouhadef",
"B.",
""
],
[
"Calamai",
"M",
""
],
[
"Carelli",
"G",
""
],
[
"Cuccato",
"D",
""
... | GINGER is a proposed tridimensional array of laser gyroscopes with the aim of measuring the Lense-Thirring effect, predicted by the General Relativity theory, in a terrestrial laboratory environment. We discuss the required accuracy, the methods to achieve it, and the preliminary experimental work in this direction. |
1910.14551 | Emmanuele Battista Dr. | Emmanuele Battista, Giampiero Esposito, Angelo Tartaglia | An effective-gravity perspective on the Sun-Jupiter-comet three-body
system | Published version | null | 10.1142/S0219887820501686 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within the solar system, approximate realizations of the three-body problem
occur when a comet approaches a planet while being affected mainly by such a
planet and the Sun, and this configuration was investigated by Tisserand within
the framework of Newtonian gravity. The exact relativistic treatment of the
problem i... | [
{
"created": "Thu, 31 Oct 2019 15:52:41 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Apr 2020 17:59:24 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Jul 2020 17:32:10 GMT",
"version": "v3"
}
] | 2020-08-10 | [
[
"Battista",
"Emmanuele",
""
],
[
"Esposito",
"Giampiero",
""
],
[
"Tartaglia",
"Angelo",
""
]
] | Within the solar system, approximate realizations of the three-body problem occur when a comet approaches a planet while being affected mainly by such a planet and the Sun, and this configuration was investigated by Tisserand within the framework of Newtonian gravity. The exact relativistic treatment of the problem is ... |
1905.01186 | Radim P\'anis | Radim P\'anis, Martin Kolo\v{s} and Zden\v{e}k Stuchl\'ik | Determination of chaotic behaviour in time series generated by charged
particle motion around magnetized Schwarzschild black holes | 21 pages, 9 figures | null | 10.1140/epjc/s10052-019-6961-7 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study behaviour of ionized region of a Keplerian disk orbiting a
Schwarzschild black hole immersed in an asymptotically uniform magnetic field.
In dependence on the magnetic parameter ${\cal B}$, and inclination angle
$\theta$ of the disk plane with respect to the magnetic field direction, the
charged particles of... | [
{
"created": "Fri, 3 May 2019 13:57:56 GMT",
"version": "v1"
}
] | 2019-06-26 | [
[
"Pánis",
"Radim",
""
],
[
"Kološ",
"Martin",
""
],
[
"Stuchlík",
"Zdeněk",
""
]
] | We study behaviour of ionized region of a Keplerian disk orbiting a Schwarzschild black hole immersed in an asymptotically uniform magnetic field. In dependence on the magnetic parameter ${\cal B}$, and inclination angle $\theta$ of the disk plane with respect to the magnetic field direction, the charged particles of t... |
1111.2199 | Alexander Petrusenko | Valentin D. Gladush and Alexander I. Petrusenko | Small oscillations of test particles with angular momentum in
Reissner-Nordstrom field | 5 pages, 8 tables | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The oscillations of the test particles on circular orbits in field of
super-extremal charged central object are researched. The formulae for
oscillation frequencies are obtained in cases of circular orbits perturbations
caused by small change in energy of the particle or by the small change in mass
of the central obj... | [
{
"created": "Wed, 9 Nov 2011 13:19:48 GMT",
"version": "v1"
}
] | 2011-11-10 | [
[
"Gladush",
"Valentin D.",
""
],
[
"Petrusenko",
"Alexander I.",
""
]
] | The oscillations of the test particles on circular orbits in field of super-extremal charged central object are researched. The formulae for oscillation frequencies are obtained in cases of circular orbits perturbations caused by small change in energy of the particle or by the small change in mass of the central objec... |
1804.01389 | Syed Moeez Hassan | Syed Moeez Hassan | A non-perturbative Hamiltonian approach to the cosmological constant
problem | 31 pages, 2 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was recently suggested that the cosmological constant problem as viewed in
a non-perturbative framework is intimately connected to the choice of time and
a physical Hamiltonian. We develop this idea further by calculating the
non-perturbative vacuum energy density as a function of the cosmological
constant with mu... | [
{
"created": "Wed, 4 Apr 2018 13:27:38 GMT",
"version": "v1"
}
] | 2018-04-05 | [
[
"Hassan",
"Syed Moeez",
""
]
] | It was recently suggested that the cosmological constant problem as viewed in a non-perturbative framework is intimately connected to the choice of time and a physical Hamiltonian. We develop this idea further by calculating the non-perturbative vacuum energy density as a function of the cosmological constant with mult... |
1603.00501 | Luis Lehner | Luis Lehner, Steven L. Liebling, Carlos Palenzuela, O. L. Caballero,
Evan O'Connor, Matthew Anderson, David Neilsen | Unequal mass binary neutron star mergers and multimessenger signals | 16 pages, 14 figures (some figures reduced in quality due to size
constraints) | null | 10.1088/0264-9381/33/18/184002 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the merger of binary neutron stars with different mass ratios
adopting three different realistic, microphysical nuclear equations of state,
as well as incorporating neutrino cooling effects. In particular, we
concentrate on the influence of the equation of state on the gravitational wave
signature and also o... | [
{
"created": "Tue, 1 Mar 2016 21:44:59 GMT",
"version": "v1"
}
] | 2016-09-21 | [
[
"Lehner",
"Luis",
""
],
[
"Liebling",
"Steven L.",
""
],
[
"Palenzuela",
"Carlos",
""
],
[
"Caballero",
"O. L.",
""
],
[
"O'Connor",
"Evan",
""
],
[
"Anderson",
"Matthew",
""
],
[
"Neilsen",
"David",
""
]... | We study the merger of binary neutron stars with different mass ratios adopting three different realistic, microphysical nuclear equations of state, as well as incorporating neutrino cooling effects. In particular, we concentrate on the influence of the equation of state on the gravitational wave signature and also on ... |
1302.3680 | Achim Kempf | Achim Kempf | Quantum Gravity on a Quantum Computer? | Discussion improved, same results, typos removed, references added | null | 10.1007/s10701-013-9735-3 | null | gr-qc math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | EPR-type measurements on spatially separated entangled spin qubits allow one,
in principle, to detect curvature. Also the entanglement of the vacuum state is
affected by curvature. Here, we ask if the curvature of spacetime can be
expressed entirely in terms of the spatial entanglement structure of the
vacuum. This w... | [
{
"created": "Fri, 15 Feb 2013 05:31:53 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Jun 2013 05:04:02 GMT",
"version": "v2"
}
] | 2015-06-15 | [
[
"Kempf",
"Achim",
""
]
] | EPR-type measurements on spatially separated entangled spin qubits allow one, in principle, to detect curvature. Also the entanglement of the vacuum state is affected by curvature. Here, we ask if the curvature of spacetime can be expressed entirely in terms of the spatial entanglement structure of the vacuum. This wou... |
1004.0338 | Harald Lueck | Harald Lueck (for the LIGO Scientific Collaboration) | The upgrade of GEO 600 | 3 pages, contribution to MG12 conference | null | null | MG12Contribution2009 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article gives a short overview of the status of the British/German
gravitational wave detector GEO 600 and the upgrades planned within 2010 and
2011
| [
{
"created": "Fri, 2 Apr 2010 14:02:09 GMT",
"version": "v1"
}
] | 2019-08-14 | [
[
"Lueck",
"Harald",
"",
"for the LIGO Scientific Collaboration"
]
] | This article gives a short overview of the status of the British/German gravitational wave detector GEO 600 and the upgrades planned within 2010 and 2011 |
1306.5500 | Paul McGrath | Richard J. Epp, Paul L. McGrath and Robert B. Mann | Momentum in General Relativity: Local versus Quasilocal Conservation
Laws | 24 pages, 3 figures | null | 10.1088/0264-9381/30/19/195019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a general relativistic conservation law for linear and angular
momentum for matter and gravitational fields in a finite volume of space that
does not rely on any spacetime symmetries. This work builds on our previous
construction of a general relativistic energy conservation law with the same
features. O... | [
{
"created": "Mon, 24 Jun 2013 02:47:20 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Epp",
"Richard J.",
""
],
[
"McGrath",
"Paul L.",
""
],
[
"Mann",
"Robert B.",
""
]
] | We construct a general relativistic conservation law for linear and angular momentum for matter and gravitational fields in a finite volume of space that does not rely on any spacetime symmetries. This work builds on our previous construction of a general relativistic energy conservation law with the same features. Our... |
2406.12789 | Rui Niu | Rui Niu, Wen Zhao | Extracting overlapping gravitational-wave signals of galactic compact
binaries: a mini review | 22 pages, 8 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave (GW) observations have provided a novel tool to explore
the universe. In the near future, space-borne detectors will further open the
window of low-frequency GW band where abundant sources exist and invaluable
information for astrophysics, cosmology, and fundamental physics can be
revealed. However... | [
{
"created": "Tue, 18 Jun 2024 16:56:29 GMT",
"version": "v1"
}
] | 2024-06-19 | [
[
"Niu",
"Rui",
""
],
[
"Zhao",
"Wen",
""
]
] | Gravitational wave (GW) observations have provided a novel tool to explore the universe. In the near future, space-borne detectors will further open the window of low-frequency GW band where abundant sources exist and invaluable information for astrophysics, cosmology, and fundamental physics can be revealed. However, ... |
2012.02700 | Simon Boudet | Simon Boudet, Flavio Bombacigno, Giovanni Montani and Massimiliano
Rinaldi | Super-entropic black hole with Immirzi hair | null | Phys. Rev. D 103, 084034 (2021) | 10.1103/PhysRevD.103.084034 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In the context of f(R) generalizations to the Holst action, endowed with a
dynamical Immirzi field, we derive an analytic solution describing
asymptotically Anti-de Sitter black holes with hyperbolic horizon. These
exhibit a scalar hair of the second kind, which ultimately depends on the
Immirzi field radial behaviou... | [
{
"created": "Fri, 4 Dec 2020 16:14:25 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Dec 2020 16:04:58 GMT",
"version": "v2"
},
{
"created": "Mon, 14 Dec 2020 17:46:26 GMT",
"version": "v3"
},
{
"created": "Wed, 24 Mar 2021 17:26:34 GMT",
"version": "v4"
}
] | 2021-04-28 | [
[
"Boudet",
"Simon",
""
],
[
"Bombacigno",
"Flavio",
""
],
[
"Montani",
"Giovanni",
""
],
[
"Rinaldi",
"Massimiliano",
""
]
] | In the context of f(R) generalizations to the Holst action, endowed with a dynamical Immirzi field, we derive an analytic solution describing asymptotically Anti-de Sitter black holes with hyperbolic horizon. These exhibit a scalar hair of the second kind, which ultimately depends on the Immirzi field radial behaviour.... |
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