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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1804.08110 | Xian Hou | Xian Hou, Zhaoyi Xu, Ming Zhou, Jiancheng Wang | Black Hole Shadow of Sgr A$^{*}$ in Dark Matter Halo | 12 pages, 7 figures, JCAP accepted | null | 10.1088/1475-7516/2018/07/015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study, for the first time, the shadow of the supermassive black hole Sgr
A$^{*}$ at the center of the Milky Way in dark matter halos. For the Cold Dark
Matter and Scalar Field Dark Matter models considered in this work, the
apparent shape of the shadow depends upon the black hole spin $a$ and the dark
matter param... | [
{
"created": "Sun, 22 Apr 2018 13:10:53 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jun 2018 03:12:05 GMT",
"version": "v2"
}
] | 2018-07-25 | [
[
"Hou",
"Xian",
""
],
[
"Xu",
"Zhaoyi",
""
],
[
"Zhou",
"Ming",
""
],
[
"Wang",
"Jiancheng",
""
]
] | We study, for the first time, the shadow of the supermassive black hole Sgr A$^{*}$ at the center of the Milky Way in dark matter halos. For the Cold Dark Matter and Scalar Field Dark Matter models considered in this work, the apparent shape of the shadow depends upon the black hole spin $a$ and the dark matter paramet... |
gr-qc/0405080 | Alexander Alekseenko | Alexander M. Alekseenko | Constraint preserving boundary conditions for the linearized BSSN
formulation | 10 pages, no figures | null | null | null | gr-qc | null | We derive two sets of explicit algebraic constraint preserving boundary
conditions for the linearized BSSN system. The approach can be generalized to
inhomogeneous differential and evolution conditions, the examples of which are
given. The proposed conditions are justified by an energy estimate on the
original BSSN v... | [
{
"created": "Sun, 16 May 2004 05:04:41 GMT",
"version": "v1"
},
{
"created": "Sun, 27 Mar 2005 04:47:00 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Alekseenko",
"Alexander M.",
""
]
] | We derive two sets of explicit algebraic constraint preserving boundary conditions for the linearized BSSN system. The approach can be generalized to inhomogeneous differential and evolution conditions, the examples of which are given. The proposed conditions are justified by an energy estimate on the original BSSN var... |
1807.07038 | Carlos M. Sendra | Carlos M. Sendra | Regular scale-dependent black holes as gravitational lenses | v2: 13 pages, 4 figures, improved version, new references added | Gen. Relativ. Gravit. (2019) 51:83 | 10.1007/s10714-019-2571-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we study regular scale-dependent black holes as
gravitational lenses. We obtain the deflection angle in the strong deflection
limit, from which we calculate the positions and the magnifications of the
relativistic images. We compare our results with those corresponding to the
Schwarzschild spacetime,... | [
{
"created": "Wed, 18 Jul 2018 16:57:45 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jul 2019 20:53:02 GMT",
"version": "v2"
}
] | 2019-07-11 | [
[
"Sendra",
"Carlos M.",
""
]
] | In this article, we study regular scale-dependent black holes as gravitational lenses. We obtain the deflection angle in the strong deflection limit, from which we calculate the positions and the magnifications of the relativistic images. We compare our results with those corresponding to the Schwarzschild spacetime, a... |
1403.6341 | Matteo Luca Ruggiero | Matteo Luca Ruggiero, Angelo Tartaglia | A Note on the Sagnac Effect and Current Terrestrial Experiments | 5 pages, revised to match the version accepted for publication in The
European Physical Journal - Plus | Eur. Phys. J. Plus (2014) 129: 126 | 10.1140/epjp/i2014-14126-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We focus on the Sagnac effect for light beams in order to evaluate if the
higher order relativistic corrections of kinematic origin could be relevant for
actual terrestrial experiments. Moreover, we discuss to what extent the analogy
with the Aharonov-Bohm effect holds true in a fully relativistic framework. We
show ... | [
{
"created": "Tue, 25 Mar 2014 13:39:10 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Jun 2014 12:28:55 GMT",
"version": "v2"
}
] | 2014-06-26 | [
[
"Ruggiero",
"Matteo Luca",
""
],
[
"Tartaglia",
"Angelo",
""
]
] | We focus on the Sagnac effect for light beams in order to evaluate if the higher order relativistic corrections of kinematic origin could be relevant for actual terrestrial experiments. Moreover, we discuss to what extent the analogy with the Aharonov-Bohm effect holds true in a fully relativistic framework. We show th... |
1705.03869 | Soichiro Isoyama | Soichiro Isoyama, Hiroyuki Nakano | Post-Newtonian templates for binary black-hole inspirals: the effect of
the horizon fluxes and the secular change in the black-hole masses and spins | v4: 50 pages, 8 figures, correct typos in Eq. (4.40) [the LO phase
due to the horizon flux] | Class.Quant.Grav. 35 (2018) no.2, 024001 | 10.1088/1361-6382/aa96c5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black holes (BHs) in an inspiraling compact binary system absorb the
gravitational-wave (GW) energy and angular-momentum fluxes across their event
horizons and this leads to the secular change in their masses and spins during
the inspiral phase. The goal of this paper is to present ready-to-use, 3.5
post-Newtonian (P... | [
{
"created": "Wed, 10 May 2017 17:41:13 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Sep 2017 15:03:39 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Dec 2017 19:26:55 GMT",
"version": "v3"
},
{
"created": "Thu, 18 May 2023 04:14:46 GMT",
"version": "v4"
}
] | 2023-05-19 | [
[
"Isoyama",
"Soichiro",
""
],
[
"Nakano",
"Hiroyuki",
""
]
] | Black holes (BHs) in an inspiraling compact binary system absorb the gravitational-wave (GW) energy and angular-momentum fluxes across their event horizons and this leads to the secular change in their masses and spins during the inspiral phase. The goal of this paper is to present ready-to-use, 3.5 post-Newtonian (PN)... |
1601.02042 | Scott A. Hughes | Scott A. Hughes | Adiabatic and post-adiabatic approaches to extreme mass ratio inspiral | 7 pages, 2 figures. Submitted to the proceedings of the 14th Marcel
Grossmann meeting | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extreme mass ratio inspirals (EMRIs) show a strong separation of timescales,
with the time characterizing inspiral, $T_{\rm i}$, much longer than any time
$T_{\rm o}$ characterizing orbital motions. The ratio of these timescales
(which is essentially an EMRI's mass ratio) can be regarded as a parameter that
controls ... | [
{
"created": "Fri, 8 Jan 2016 22:09:26 GMT",
"version": "v1"
}
] | 2016-01-12 | [
[
"Hughes",
"Scott A.",
""
]
] | Extreme mass ratio inspirals (EMRIs) show a strong separation of timescales, with the time characterizing inspiral, $T_{\rm i}$, much longer than any time $T_{\rm o}$ characterizing orbital motions. The ratio of these timescales (which is essentially an EMRI's mass ratio) can be regarded as a parameter that controls a ... |
gr-qc/9808077 | Bahram Mashhoon | Bahram Mashhoon (Univ. of Missouri-Columbia), Richard Neutze (Uppsala
Univ.), Mark Hannam (Univ. of North Carolina), Geoffrey E. Stedman (Univ. of
Canterbury, NZ) | Observable frequency shifts via spin-rotation coupling | LaTeX, 15 pages with 4 PostScript figures, submitted to Phys. Lett. A | Phys.Lett. A249 (1998) 161-166 | 10.1016/S0375-9601(98)00729-4 | null | gr-qc physics.optics | null | The phase perturbation arising from spin-rotation coupling is developed as a
natural extension of the celebrated Sagnac effect. Experimental evidence in
support of this phase shift, however, has yet to be realized due to the
exceptional sensitivity required. We draw attention to the relevance of a
series of experimen... | [
{
"created": "Thu, 27 Aug 1998 23:01:10 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Mashhoon",
"Bahram",
"",
"Univ. of Missouri-Columbia"
],
[
"Neutze",
"Richard",
"",
"Uppsala\n Univ."
],
[
"Hannam",
"Mark",
"",
"Univ. of North Carolina"
],
[
"Stedman",
"Geoffrey E.",
"",
"Univ. of\n Canterbury, NZ"
]
] | The phase perturbation arising from spin-rotation coupling is developed as a natural extension of the celebrated Sagnac effect. Experimental evidence in support of this phase shift, however, has yet to be realized due to the exceptional sensitivity required. We draw attention to the relevance of a series of experiments... |
0806.1137 | Mohamed Bennai | M.Bennai, H.Chakir and Z.Sakhi | On Inflation Potentials in Randall-Sundrum Braneworld Model | 10 pages | Electronic Journal of Theoretical Physics 9 (2006) 84 | null | GNPHE/0503 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the inflationary dynamics of the universe in the Randall-Sandrum
typeII Braneworld model. We consider both an inverse-power law and exponential
potentials and apply the Slow-Roll approximation in high energy limit to derive
analytical expression of relevant inflationary quantities. An upper bound for
the cou... | [
{
"created": "Fri, 6 Jun 2008 11:32:23 GMT",
"version": "v1"
}
] | 2014-08-12 | [
[
"Bennai",
"M.",
""
],
[
"Chakir",
"H.",
""
],
[
"Sakhi",
"Z.",
""
]
] | We study the inflationary dynamics of the universe in the Randall-Sandrum typeII Braneworld model. We consider both an inverse-power law and exponential potentials and apply the Slow-Roll approximation in high energy limit to derive analytical expression of relevant inflationary quantities. An upper bound for the coupl... |
1101.3294 | Marko Vojinovic | Aleksandar Mikovic and Marko Vojinovic | A finiteness bound for the EPRL/FK spin foam model | v6: published version | Class. Quant. Grav. 30, 035001 (2013) | 10.1088/0264-9381/30/3/035001 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the EPRL/FK spin foam model of quantum gravity has an absolutely
convergent partition function if the vertex amplitude is divided by an
appropriate power $p$ of the product of dimensions of the vertex spins. This
power is independent of the spin foam 2-complex and we find that $p>2$ insures
the convergen... | [
{
"created": "Mon, 17 Jan 2011 19:41:26 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Jan 2011 20:05:51 GMT",
"version": "v2"
},
{
"created": "Thu, 2 Jun 2011 12:37:37 GMT",
"version": "v3"
},
{
"created": "Wed, 1 Feb 2012 16:43:11 GMT",
"version": "v4"
},
{
"cre... | 2013-01-15 | [
[
"Mikovic",
"Aleksandar",
""
],
[
"Vojinovic",
"Marko",
""
]
] | We show that the EPRL/FK spin foam model of quantum gravity has an absolutely convergent partition function if the vertex amplitude is divided by an appropriate power $p$ of the product of dimensions of the vertex spins. This power is independent of the spin foam 2-complex and we find that $p>2$ insures the convergence... |
gr-qc/9810077 | WU Zhong Chao | Wu Zhong Chao (Beijing Normal University) | Open and Closed Creations of Black Holes | 22 pages | null | null | Beijing preprint 98-109 | gr-qc hep-th | null | We study pair creation of Kerr-Newman-anti-de Sitter and Kerr-Newman-de
Sitter black holes.
| [
{
"created": "Sun, 25 Oct 1998 19:16:14 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Nov 1998 16:51:03 GMT",
"version": "v2"
},
{
"created": "Thu, 12 Nov 1998 20:59:14 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Chao",
"Wu Zhong",
"",
"Beijing Normal University"
]
] | We study pair creation of Kerr-Newman-anti-de Sitter and Kerr-Newman-de Sitter black holes. |
1503.06761 | Anzhong Wang | Tao Zhu, Anzhong Wang, Gerald Cleaver, Klaus Kirsten, Qin Sheng, and
Qiang Wu | Detecting quantum gravitational effects of loop quantum cosmology in the
early universe? | revtex4, 2 figutes and 1 table. ApJL 807 (2015) L17 | Astrophysical Journal Letters 807 (2015) L17 | 10.1088/2041-8205/807/1/L17 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the primordial power spectra and spectral indexes of the density
fluctuations and gravitational waves in the framework of loop quantum cosmology
(LQC) with holonomy and inverse-volume corrections, by using the uniform
asymptotic approximation method to its third-order, at which the upper error
bounds are $\... | [
{
"created": "Mon, 23 Mar 2015 18:45:23 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Apr 2015 18:07:11 GMT",
"version": "v2"
},
{
"created": "Thu, 11 Jun 2015 06:28:14 GMT",
"version": "v3"
},
{
"created": "Fri, 31 Jul 2015 23:13:58 GMT",
"version": "v4"
}
] | 2015-08-04 | [
[
"Zhu",
"Tao",
""
],
[
"Wang",
"Anzhong",
""
],
[
"Cleaver",
"Gerald",
""
],
[
"Kirsten",
"Klaus",
""
],
[
"Sheng",
"Qin",
""
],
[
"Wu",
"Qiang",
""
]
] | We derive the primordial power spectra and spectral indexes of the density fluctuations and gravitational waves in the framework of loop quantum cosmology (LQC) with holonomy and inverse-volume corrections, by using the uniform asymptotic approximation method to its third-order, at which the upper error bounds are $\le... |
0707.0215 | Patricio S. Letelier | Patricio S. Letelier | Riemann-Christoffel flows | 3 pages, RevTex,small changes, Int. J. Theor. Phys. (in press) | Int.J.Theor.Phys.47:1312-1315,2008 | 10.1007/s10773-007-9565-1 | null | gr-qc astro-ph math.DG | null | A geometric flow based in the Riemann-Christoffel curvature tensor that in
two dimensions has some common features with the usual Ricci flow is presented.
For $n$ dimensional spaces this new flow takes into account all the components
of the intrinsic curvature. For four dimensional Lorentzian manifolds it is
found th... | [
{
"created": "Mon, 2 Jul 2007 12:54:04 GMT",
"version": "v1"
},
{
"created": "Thu, 5 Jul 2007 14:31:07 GMT",
"version": "v2"
},
{
"created": "Wed, 1 Aug 2007 18:45:24 GMT",
"version": "v3"
},
{
"created": "Mon, 1 Oct 2007 19:57:45 GMT",
"version": "v4"
}
] | 2008-11-26 | [
[
"Letelier",
"Patricio S.",
""
]
] | A geometric flow based in the Riemann-Christoffel curvature tensor that in two dimensions has some common features with the usual Ricci flow is presented. For $n$ dimensional spaces this new flow takes into account all the components of the intrinsic curvature. For four dimensional Lorentzian manifolds it is found that... |
2306.12488 | Benito Rodr\'iguez | Flavio C. S\'anchez and Armando A. Roque and Benito Rodr\'iguez and
Javier Chagoya | Total light bending in non-asymptotically flat black hole spacetimes | 32+1 pages, 6 figures, 2 tables | Class. Quantum Grav. (2024) 41 015019 | 10.1088/1361-6382/ad0e81 | null | gr-qc astro-ph.GA physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational deflection of light is a critical test of modified theories
of gravity. A few years ago, Gibbons and Werner introduced a definition of the
deflection angle based on the Gauss-Bonnet theorem. In more recent years,
Arakida proposed a related idea for defining the deflection angle in
non-asymptotically... | [
{
"created": "Wed, 21 Jun 2023 18:01:03 GMT",
"version": "v1"
},
{
"created": "Sat, 9 Dec 2023 16:54:25 GMT",
"version": "v2"
}
] | 2023-12-12 | [
[
"Sánchez",
"Flavio C.",
""
],
[
"Roque",
"Armando A.",
""
],
[
"Rodríguez",
"Benito",
""
],
[
"Chagoya",
"Javier",
""
]
] | The gravitational deflection of light is a critical test of modified theories of gravity. A few years ago, Gibbons and Werner introduced a definition of the deflection angle based on the Gauss-Bonnet theorem. In more recent years, Arakida proposed a related idea for defining the deflection angle in non-asymptotically f... |
0911.3362 | Ninfa Radicella | Angelo Tartaglia and Ninfa Radicella | From Elastic Continua to Space-time | Proceedings of 'Invisible Universe International Conference', Paris,
June 29- July 3, 2009 | AIP Conf.Proc.1241:1156-1163,2010 | 10.1063/1.3462613 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Since the early days of the theory of electromagnetism and of gravity the
idea of space, then space-time, as a sort of physical continuum hovered the
scientific community. Actually general relativity shows the strong similarity
that exists between the geometrical properties of space-time and the ones of a
strained el... | [
{
"created": "Tue, 17 Nov 2009 18:19:28 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Tartaglia",
"Angelo",
""
],
[
"Radicella",
"Ninfa",
""
]
] | Since the early days of the theory of electromagnetism and of gravity the idea of space, then space-time, as a sort of physical continuum hovered the scientific community. Actually general relativity shows the strong similarity that exists between the geometrical properties of space-time and the ones of a strained elas... |
2105.02913 | Abbas Sherif | Abbas Sherif | On the existence of marginally trapped tubes in spacetimes with local
rotational symmetry | 6 pages, no figure, Short Communication. arXiv admin note: text
overlap with arXiv:2004.02057 | European Physical Journal C, 2021 | 10.1140/epjc/s10052-021-09244-z | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Let $M$ be a locally rotationally symmetric spacetime with at least one of
the rotation or spatial twist being non-zero. It is proved that $M$ cannot
admit a non-minimal marginally trapped tube of the form $\chi=X(t)$.
| [
{
"created": "Thu, 6 May 2021 18:41:13 GMT",
"version": "v1"
}
] | 2021-05-19 | [
[
"Sherif",
"Abbas",
""
]
] | Let $M$ be a locally rotationally symmetric spacetime with at least one of the rotation or spatial twist being non-zero. It is proved that $M$ cannot admit a non-minimal marginally trapped tube of the form $\chi=X(t)$. |
0705.3115 | Axel Fingerle | Axel Fingerle | Relativistic Fluctuation Theorems: Theory and explicit examples | 27 pages, 6 figures, Comptes rendus - Physique | ComptesRendusPhysique8:696-713,2007 | 10.1016/j.crhy.2007.05.015 | null | gr-qc | null | To reveal how nonequilibrium physics and relativity theory intertwine, this
articles studies relativistic Brownian motion under cosmic expansion. Two
fluctuation theorems for the entropy ds, which is locally produced in this
extreme nonequilibrium situation, are presented and proven. The first,
<exp(-ds)>=1, is a gen... | [
{
"created": "Tue, 22 May 2007 08:53:15 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Fingerle",
"Axel",
""
]
] | To reveal how nonequilibrium physics and relativity theory intertwine, this articles studies relativistic Brownian motion under cosmic expansion. Two fluctuation theorems for the entropy ds, which is locally produced in this extreme nonequilibrium situation, are presented and proven. The first, <exp(-ds)>=1, is a gener... |
gr-qc/0209036 | Christopher J. Fewster | C.J. Fewster and T.A. Roman | Null energy conditions in quantum field theory | 14 pages, REVTeX4. Minor changes; version to appear in Phys Rev D | Phys.Rev. D67 (2003) 044003 | 10.1103/PhysRevD.67.044003 | ESI 1205 | gr-qc | null | For the quantised, massless, minimally coupled real scalar field in
four-dimensional Minkowski space, we show (by an explicit construction) that
weighted averages of the null-contracted stress-energy tensor along null
geodesics are unbounded from below on the class of Hadamard states. Thus there
are no quantum inequa... | [
{
"created": "Wed, 11 Sep 2002 14:38:12 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Nov 2002 10:24:53 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Fewster",
"C. J.",
""
],
[
"Roman",
"T. A.",
""
]
] | For the quantised, massless, minimally coupled real scalar field in four-dimensional Minkowski space, we show (by an explicit construction) that weighted averages of the null-contracted stress-energy tensor along null geodesics are unbounded from below on the class of Hadamard states. Thus there are no quantum inequali... |
2004.00544 | Rodrigo Baptista | Rodrigo Baptista, Orfeu Bertolami | An Ostrogradsky Instability Analysis of Non-minimally Coupled Weyl
Connection Gravity Theories | 7 pages | Gen Relativ Gravit 53, 12 (2021) | 10.1007/s10714-021-02784-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Hamiltonian formalism of the non-minimally coupled Weyl
connection gravity (NMCWCG) in order to check whether Ostrogradsky
instabilities are present. The Hamiltonian of the NMCWCG theories is obtained
by foliating space-time into a real line (representing time) and
\mbox{3-dimensional} space-like hypersu... | [
{
"created": "Wed, 1 Apr 2020 16:11:44 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Jan 2021 10:00:25 GMT",
"version": "v2"
}
] | 2021-01-25 | [
[
"Baptista",
"Rodrigo",
""
],
[
"Bertolami",
"Orfeu",
""
]
] | We study the Hamiltonian formalism of the non-minimally coupled Weyl connection gravity (NMCWCG) in order to check whether Ostrogradsky instabilities are present. The Hamiltonian of the NMCWCG theories is obtained by foliating space-time into a real line (representing time) and \mbox{3-dimensional} space-like hypersurf... |
gr-qc/9607006 | Arlen Anderson | Andrew Abrahams, Arlen Anderson, Yvonne Choquet-Bruhat, and James W.
York, Jr | A non-strictly hyperbolic system for the Einstein equations with
arbitrary lapse and shift | 9 pp., LaTeX | null | null | IFP-UNC-518, TAR-UNC-054 | gr-qc | null | We obtain a system for the spatial metric and extrinsic curvature of a
spacelike slice that is hyperbolic non-strict in the sense of Leray and Ohya
and is equivalent to the Einstein equations. Its characteristics are the light
cone and the normal to the slice for any choice of lapse and shift functions,
and it admits... | [
{
"created": "Wed, 3 Jul 1996 17:15:02 GMT",
"version": "v1"
}
] | 2012-08-27 | [
[
"Abrahams",
"Andrew",
""
],
[
"Anderson",
"Arlen",
""
],
[
"Choquet-Bruhat",
"Yvonne",
""
],
[
"York,",
"James W.",
"Jr"
]
] | We obtain a system for the spatial metric and extrinsic curvature of a spacelike slice that is hyperbolic non-strict in the sense of Leray and Ohya and is equivalent to the Einstein equations. Its characteristics are the light cone and the normal to the slice for any choice of lapse and shift functions, and it admits a... |
1111.4916 | Miquel Nofrarias | M. Nofrarias, L. Ferraioli, G. Congedo, M. Hueller, M. Armano, M.
Diaz-Aguilo, A. Grynagier, M. Hewitson, S. Vitale | Parameter estimation in LISA Pathfinder operational exercises | 10 pages, 3 figures, prepared for the Proceedings of the 9th Edoardo
Amaldi Conference on Gravitational Waves, JPCS | J. Phys.: Conf. Ser. 363 012053, 2012 | 10.1088/1742-6596/363/1/012053 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The LISA Pathfinder data analysis team has been developing in the last years
the infrastructure and methods required to run the mission during flight
operations. These are gathered in the LTPDA toolbox, an object oriented MATLAB
toolbox that allows all the data analysis functionalities for the mission,
while storing ... | [
{
"created": "Mon, 21 Nov 2011 16:22:12 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Jan 2012 08:44:58 GMT",
"version": "v2"
}
] | 2012-06-20 | [
[
"Nofrarias",
"M.",
""
],
[
"Ferraioli",
"L.",
""
],
[
"Congedo",
"G.",
""
],
[
"Hueller",
"M.",
""
],
[
"Armano",
"M.",
""
],
[
"Diaz-Aguilo",
"M.",
""
],
[
"Grynagier",
"A.",
""
],
[
"Hewitson",
... | The LISA Pathfinder data analysis team has been developing in the last years the infrastructure and methods required to run the mission during flight operations. These are gathered in the LTPDA toolbox, an object oriented MATLAB toolbox that allows all the data analysis functionalities for the mission, while storing th... |
gr-qc/0003101 | Jose A. Font | Jose A. Font (Valencia) | Numerical hydrodynamics in general relativity | 105 pages, 12 figures. The full online-readable version of this
article, including several animations, will be published in Living Reviews in
Relativity at http://www.livingreviews.org | Living Rev.Rel.3:2,2000; Living Rev.Rel.6:4,2003 | 10.12942/lrr-2000-2 | null | gr-qc astro-ph | null | The current status of numerical solutions for the equations of ideal general
relativistic hydrodynamics is reviewed. With respect to an earlier version of
the article the present update provides additional information on numerical
schemes and extends the discussion of astrophysical simulations in general
relativistic... | [
{
"created": "Tue, 28 Mar 2000 10:38:17 GMT",
"version": "v1"
},
{
"created": "Mon, 12 May 2003 08:23:49 GMT",
"version": "v2"
}
] | 2016-10-19 | [
[
"Font",
"Jose A.",
"",
"Valencia"
]
] | The current status of numerical solutions for the equations of ideal general relativistic hydrodynamics is reviewed. With respect to an earlier version of the article the present update provides additional information on numerical schemes and extends the discussion of astrophysical simulations in general relativistic h... |
1906.05989 | Han Dong | Han Dong | Generalized Noether Theorem for Gauss-Bonnet Cosmology | 9 pages, 0 figures | null | 10.1016/j.cjph.2019.06.001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Generalized Noether's theory is a useful method for researching the modified
gravity theories about the conserved quantities and symmetries. A generally
Gauss-Bonnet gravity $f(R,\mathcal{G})$ theory was proposed as an alternative
gravity model. Through the generalized Noether symmetry, polynomial and product
forms o... | [
{
"created": "Fri, 14 Jun 2019 02:38:58 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Jun 2019 04:39:59 GMT",
"version": "v2"
}
] | 2019-06-25 | [
[
"Dong",
"Han",
""
]
] | Generalized Noether's theory is a useful method for researching the modified gravity theories about the conserved quantities and symmetries. A generally Gauss-Bonnet gravity $f(R,\mathcal{G})$ theory was proposed as an alternative gravity model. Through the generalized Noether symmetry, polynomial and product forms of ... |
1712.09735 | Mohammad Vahid Takook | M. V. Takook | de Sitter super-gravity in ambient space formalism | 11 pages. arXiv admin note: substantial text overlap with
arXiv:1403.1204 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the de Sitter ambient space formalism the massless fields, which include
the linear gravity and massless minimally coupled scalar field, can be written
in terms of two separate parts: a massless conformally coupled scalar field and
a polarization tensor(-spinor) part. Therefore due to the massless conformally
coup... | [
{
"created": "Tue, 26 Dec 2017 17:17:18 GMT",
"version": "v1"
}
] | 2017-12-29 | [
[
"Takook",
"M. V.",
""
]
] | In the de Sitter ambient space formalism the massless fields, which include the linear gravity and massless minimally coupled scalar field, can be written in terms of two separate parts: a massless conformally coupled scalar field and a polarization tensor(-spinor) part. Therefore due to the massless conformally couple... |
2007.13294 | Shoichiro Miyashita | Shoichiro Miyashita | Role of Mann Counterterm in Gravitational Energy | 4 pages; v2; typos corrected, footnote and references added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In 1999, R. B. Mann proposed a counterterm that is some sort of
generalization of the well-known Holographic counterterm and that can eliminate
the divergence of the gravitational action of asymptotically AdS and flat
spacetimes (Phys. Rev. D $\boldsymbol{60}$ (1999) 104047 [1]). I show it is not
only for eliminating... | [
{
"created": "Mon, 27 Jul 2020 03:31:22 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Nov 2020 18:41:53 GMT",
"version": "v2"
}
] | 2020-11-17 | [
[
"Miyashita",
"Shoichiro",
""
]
] | In 1999, R. B. Mann proposed a counterterm that is some sort of generalization of the well-known Holographic counterterm and that can eliminate the divergence of the gravitational action of asymptotically AdS and flat spacetimes (Phys. Rev. D $\boldsymbol{60}$ (1999) 104047 [1]). I show it is not only for eliminating t... |
0912.0854 | Axel Kleinschmidt | Axel Kleinschmidt, Hermann Nicolai | Cosmological quantum billiards | 18 pages. Based on a talk by H. Nicolai in honor of George Ellis'
70th birthday. v2: reference added. v3: reference added | null | null | AEI-2009-117,ULB-TH/09-41 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The mini-superspace quantization of D=11 supergravity is equivalent to the
quantization of a E10/K(E10) coset space sigma model, when the latter is
restricted to the E10 Cartan subalgebra. As a consequence, the wavefunctions
solving the relevant mini-superspace Wheeler-DeWitt equation involve
automorphic (Maass wave)... | [
{
"created": "Fri, 4 Dec 2009 13:33:42 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Dec 2009 16:54:52 GMT",
"version": "v2"
},
{
"created": "Thu, 4 Feb 2010 17:30:19 GMT",
"version": "v3"
}
] | 2010-02-04 | [
[
"Kleinschmidt",
"Axel",
""
],
[
"Nicolai",
"Hermann",
""
]
] | The mini-superspace quantization of D=11 supergravity is equivalent to the quantization of a E10/K(E10) coset space sigma model, when the latter is restricted to the E10 Cartan subalgebra. As a consequence, the wavefunctions solving the relevant mini-superspace Wheeler-DeWitt equation involve automorphic (Maass wave) f... |
2406.01687 | Luca Reali | Luca Reali, Roberto Cotesta, Andrea Antonelli, Konstantinos Kritos,
Vladimir Strokov, Emanuele Berti | Intermediate-mass black hole binary parameter estimation with
next-generation ground-based detector networks | 16 pages, 8 figures. All data are available at
https://doi.org/10.5281/zenodo.11450792 | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Astrophysical scenarios for the formation and evolution of intermediate-mass
black holes (IMBHs) in the mass range $10^2 M_\odot \lesssim M \lesssim 10^6
M_\odot$ remain uncertain, but future ground-based gravitational-wave (GW)
interferometers will probe the lower end of the IMBH mass range. We study the
detectabili... | [
{
"created": "Mon, 3 Jun 2024 18:00:02 GMT",
"version": "v1"
}
] | 2024-06-05 | [
[
"Reali",
"Luca",
""
],
[
"Cotesta",
"Roberto",
""
],
[
"Antonelli",
"Andrea",
""
],
[
"Kritos",
"Konstantinos",
""
],
[
"Strokov",
"Vladimir",
""
],
[
"Berti",
"Emanuele",
""
]
] | Astrophysical scenarios for the formation and evolution of intermediate-mass black holes (IMBHs) in the mass range $10^2 M_\odot \lesssim M \lesssim 10^6 M_\odot$ remain uncertain, but future ground-based gravitational-wave (GW) interferometers will probe the lower end of the IMBH mass range. We study the detectability... |
1604.05548 | Chiang-Mei Chen | Gang Sun, Chiang-Mei Chen, Jian-Liang Liu, James M. Nester | Covariant Hamiltonian boundary term: Reference and quasi-local
quantities | 6 pages, contribution to the Proceedings of the Second LeCosPA
Symposium "Everything about Gravity", Taipei, 14-18 Dec., 2015 | null | 10.1142/9789813203952_0088 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hamiltonian for dynamic geometry generates the evolution of a spatial
region along a vector field. It includes a boundary term which determines both
the value of the Hamiltonian and the boundary conditions. The value gives the
quasi-local quantities: energy-momentum, angular-momentum and center-of-mass.
The bound... | [
{
"created": "Tue, 19 Apr 2016 12:56:47 GMT",
"version": "v1"
}
] | 2019-02-27 | [
[
"Sun",
"Gang",
""
],
[
"Chen",
"Chiang-Mei",
""
],
[
"Liu",
"Jian-Liang",
""
],
[
"Nester",
"James M.",
""
]
] | The Hamiltonian for dynamic geometry generates the evolution of a spatial region along a vector field. It includes a boundary term which determines both the value of the Hamiltonian and the boundary conditions. The value gives the quasi-local quantities: energy-momentum, angular-momentum and center-of-mass. The boundar... |
1704.07668 | Manfried Faber | Manfried Faber and Martin Suda | Influence of gravitational waves on circular moving particles | Figures adjusted to correction term for the angular velocity, and
references added | null | 10.4236/jmp.2018.94045 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We investigate the influence of a gravitational wave background on particles
in circular motion. We are especially interested in waves leading to stationary
orbits. This consideration is limited to circular orbits perpendicular to the
incidence direction. As a main result of our calculation we obtain in addition
to t... | [
{
"created": "Tue, 25 Apr 2017 12:51:35 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Nov 2017 16:24:55 GMT",
"version": "v2"
},
{
"created": "Fri, 22 Dec 2017 13:00:00 GMT",
"version": "v3"
}
] | 2018-05-09 | [
[
"Faber",
"Manfried",
""
],
[
"Suda",
"Martin",
""
]
] | We investigate the influence of a gravitational wave background on particles in circular motion. We are especially interested in waves leading to stationary orbits. This consideration is limited to circular orbits perpendicular to the incidence direction. As a main result of our calculation we obtain in addition to the... |
2403.09748 | V. G. Gurzadyan | N.Galikyan, Sh.Khlghatyan, A.A.Kocharyan, V.G.Gurzadyan | Neural Network Analysis of S2-Star Dynamics: Extended mass | 6 pages, 3 figs; Eur Phys J Plus (in press) | Eur. Phys. J. Plus 139, 246 (2024) | 10.1140/epjp/s13360-024-05042-0 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Physics-informed neural network (PINN) analysis of the dynamics of S-stars in
the vicinity of the supermassive black hole in the Galactic center is performed
within General Relativity treatment. The aim is to reveal the role of possible
extended mass (dark matter) configuration in the dynamics of the S-stars, in
addi... | [
{
"created": "Thu, 14 Mar 2024 03:43:21 GMT",
"version": "v1"
}
] | 2024-03-18 | [
[
"Galikyan",
"N.",
""
],
[
"Khlghatyan",
"Sh.",
""
],
[
"Kocharyan",
"A. A.",
""
],
[
"Gurzadyan",
"V. G.",
""
]
] | Physics-informed neural network (PINN) analysis of the dynamics of S-stars in the vicinity of the supermassive black hole in the Galactic center is performed within General Relativity treatment. The aim is to reveal the role of possible extended mass (dark matter) configuration in the dynamics of the S-stars, in additi... |
gr-qc/0204065 | Richard Woodard | V.K. Onemli and R.P. Woodard (University of Florida at Gainesville) | Super-Acceleration from Massless, Minimally Coupled $\phi^4$ | 28 pages, LaTeX 2 epsilon, 4 figures, revised for publication | Class.Quant.Grav. 19 (2002) 4607 | 10.1088/0264-9381/19/17/311 | UFIFT-HEP-02-13 | gr-qc astro-ph hep-th | null | We derive a simple form for the propagator of a massless, minimally coupled
scalar in a locally de Sitter geometry of arbitrary spacetime dimension. We
then employ it to compute the fully renormalized stress tensor at one and two
loop orders for a massless, minimally coupled phi^4 theory which is released in
Bunch-Da... | [
{
"created": "Sat, 20 Apr 2002 05:53:12 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Jul 2002 09:04:53 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Onemli",
"V. K.",
"",
"University of Florida at Gainesville"
],
[
"Woodard",
"R. P.",
"",
"University of Florida at Gainesville"
]
] | We derive a simple form for the propagator of a massless, minimally coupled scalar in a locally de Sitter geometry of arbitrary spacetime dimension. We then employ it to compute the fully renormalized stress tensor at one and two loop orders for a massless, minimally coupled phi^4 theory which is released in Bunch-Davi... |
1306.5470 | John W. Moffat | J. W. Moffat | Bimetric Gravity, Variable Speed of Light Cosmology and Planck2013 | 7 pages, no figures. arXiv admin note: substantial text overlap with
arXiv:gr-qc/0304058 | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A bimetric gravity model with a variable speed of light is shown to be in
agreement with the results reported from the Planck satellite in 2013. The
predicted scalar mode spectral index is $n_s\approx 0.96$ and its running is
$\alpha_s\approx 8\times 10^{-4}$ when the fundamental length scale $\ell_0$ in
the model is... | [
{
"created": "Sun, 23 Jun 2013 21:02:32 GMT",
"version": "v1"
}
] | 2013-06-25 | [
[
"Moffat",
"J. W.",
""
]
] | A bimetric gravity model with a variable speed of light is shown to be in agreement with the results reported from the Planck satellite in 2013. The predicted scalar mode spectral index is $n_s\approx 0.96$ and its running is $\alpha_s\approx 8\times 10^{-4}$ when the fundamental length scale $\ell_0$ in the model is f... |
gr-qc/0412074 | Ettore Minguzzi | E. Minguzzi | Maximizing curves for the charged-particle action in globally hyperbolic
spacetimes | 16 pages, 6 figures, contribution to the proceedings of the "9th
International conference on differential geometry and its applications"
Prague, August 30 - September 3, 2004 | null | null | null | gr-qc | null | In a globally hyperbolic spacetime any pair of chronologically related events
admits a connecting geodesic. We present two theorems which prove that, more
generally, under weak assumptions, given a charge-to-mass ratio there is always
a connecting solution of the Lorentz force equation having that ratio. A
geometrica... | [
{
"created": "Wed, 15 Dec 2004 18:36:42 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Minguzzi",
"E.",
""
]
] | In a globally hyperbolic spacetime any pair of chronologically related events admits a connecting geodesic. We present two theorems which prove that, more generally, under weak assumptions, given a charge-to-mass ratio there is always a connecting solution of the Lorentz force equation having that ratio. A geometrical ... |
0908.0998 | Babak Vakili | Babak Vakili | Quadratic quantum cosmology with Schutz' perfect fluid | 16 pages, 11 figures, revised version with additions, to appear in
CQG | Class.Quant.Grav.27:025008,2010 | 10.1088/0264-9381/27/2/025008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the classical and quantum models of a Friedmann-Robertson-Walker
(FRW) cosmology, coupled to a perfect fluid, in the context of the $f(R)$
gravity. Using the Schutz' representation for the perfect fluid, we show that,
under a particular gauge choice, it may lead to the identification of a
time-parameter for ... | [
{
"created": "Fri, 7 Aug 2009 07:50:58 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Dec 2009 15:14:13 GMT",
"version": "v2"
}
] | 2010-04-30 | [
[
"Vakili",
"Babak",
""
]
] | We study the classical and quantum models of a Friedmann-Robertson-Walker (FRW) cosmology, coupled to a perfect fluid, in the context of the $f(R)$ gravity. Using the Schutz' representation for the perfect fluid, we show that, under a particular gauge choice, it may lead to the identification of a time-parameter for th... |
0804.4162 | Miguel Lorente | P. Kramer (University of Tuebingen), M. Lorente (University of Oviedo) | Discrete Quantum Gravity: II. Simplicial complexes, irreps of SL(2,C),
and a Lorentz invariant weight in a state sum model | LaTex 19 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In part I of [1] we have developed the tensor and spin representation of
SO(4) in order to apply it to the simplicial decomposition of the Barrett-Crane
model. We attach to each face of a triangle the spherical function constructed
from the Dolginov-Biedenharn function.
In part II we apply the same technique to the... | [
{
"created": "Fri, 25 Apr 2008 18:30:56 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Apr 2008 10:12:40 GMT",
"version": "v2"
},
{
"created": "Wed, 30 Apr 2008 16:58:37 GMT",
"version": "v3"
}
] | 2008-04-30 | [
[
"Kramer",
"P.",
"",
"University of Tuebingen"
],
[
"Lorente",
"M.",
"",
"University of Oviedo"
]
] | In part I of [1] we have developed the tensor and spin representation of SO(4) in order to apply it to the simplicial decomposition of the Barrett-Crane model. We attach to each face of a triangle the spherical function constructed from the Dolginov-Biedenharn function. In part II we apply the same technique to the Lor... |
2211.12947 | Soumya Jana | Ashish Narang, Subhendra Mohanty, Soumya Jana | Gravitational radiation from binary systems in $f(R)$ gravity: A
semi-classical approach | 21 pages, 1 figure, 2 tables. Matched with published version | JCAP 03 (2023) 008 | 10.1088/1475-7516/2023/03/008 | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | The rate of energy loss and orbital period decay of quasi-stable compact
binary systems are derived in $f(R)$ theory of gravity using the method of a
single vertex graviton emission process from a classical source. After
linearising the $f(R)$ action written in an equivalent scalar-tensor format in
the Einstein frame... | [
{
"created": "Wed, 23 Nov 2022 13:45:58 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Mar 2023 15:45:54 GMT",
"version": "v2"
}
] | 2023-03-28 | [
[
"Narang",
"Ashish",
""
],
[
"Mohanty",
"Subhendra",
""
],
[
"Jana",
"Soumya",
""
]
] | The rate of energy loss and orbital period decay of quasi-stable compact binary systems are derived in $f(R)$ theory of gravity using the method of a single vertex graviton emission process from a classical source. After linearising the $f(R)$ action written in an equivalent scalar-tensor format in the Einstein frame, ... |
gr-qc/0001102 | Renaud Parentani | C. Barrabes, V. Frolov and R. Parentani | Stochastically Fluctuating Black-Hole Geometry, Hawking Radiation and
the Trans-Planckian Problem | 32 pages | Phys.Rev. D62 (2000) 044020 | 10.1103/PhysRevD.62.044020 | null | gr-qc hep-th | null | We study the propagation of null rays and massless fields in a black hole
fluctuating geometry. The metric fluctuations are induced by a small
oscillating incoming flux of energy. The flux also induces black hole mass
oscillations around its average value. We assume that the metric fluctuations
are described by a sta... | [
{
"created": "Mon, 31 Jan 2000 11:32:52 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Barrabes",
"C.",
""
],
[
"Frolov",
"V.",
""
],
[
"Parentani",
"R.",
""
]
] | We study the propagation of null rays and massless fields in a black hole fluctuating geometry. The metric fluctuations are induced by a small oscillating incoming flux of energy. The flux also induces black hole mass oscillations around its average value. We assume that the metric fluctuations are described by a stati... |
2101.07214 | Jorge L. deLyra | Jorge L. deLyra | Energetic Stability of the Solutions of the Einstein Field Equations for
Spherically Symmetric Liquid Shells | 18 pages, 5 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We interpret the exact solutions previously obtained for spherically
symmetric shells of liquid fluid in General Relativity in terms of the energies
involved. We show that a certain parameter that was introduced into the
solutions by the interface boundary conditions is related to the binding
energies of the gravitat... | [
{
"created": "Thu, 14 Jan 2021 23:22:06 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Jan 2021 20:00:12 GMT",
"version": "v2"
},
{
"created": "Thu, 15 Apr 2021 02:11:36 GMT",
"version": "v3"
}
] | 2021-04-16 | [
[
"deLyra",
"Jorge L.",
""
]
] | We interpret the exact solutions previously obtained for spherically symmetric shells of liquid fluid in General Relativity in terms of the energies involved. We show that a certain parameter that was introduced into the solutions by the interface boundary conditions is related to the binding energies of the gravitatio... |
0904.2544 | Eyo Ita III | Eyo Eyo Ita III | General covariance for a proposal for 4-D gravity | 7 pages | Proceedings of the 3rd International Conference on Lie-Admissible
Treatment of Irreversible Processes (pp. 279-286) 2011 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we extend some previous results for a new proposal for gravity
and place them into overall context. The basic fields of this proposal provide
an off-shell realization of symmetry with respect to SO(3,C) gauge
transformations and general coordinate transformations of 4-dimensional
spacetime.
| [
{
"created": "Thu, 16 Apr 2009 17:26:30 GMT",
"version": "v1"
},
{
"created": "Tue, 18 May 2010 19:57:26 GMT",
"version": "v2"
},
{
"created": "Wed, 19 May 2010 18:11:03 GMT",
"version": "v3"
},
{
"created": "Thu, 30 Dec 2010 04:44:03 GMT",
"version": "v4"
},
{
"c... | 2012-06-01 | [
[
"Ita",
"Eyo Eyo",
"III"
]
] | In this paper we extend some previous results for a new proposal for gravity and place them into overall context. The basic fields of this proposal provide an off-shell realization of symmetry with respect to SO(3,C) gauge transformations and general coordinate transformations of 4-dimensional spacetime. |
1008.1822 | Charalampos Markakis | Charalampos Markakis, Jocelyn S. Read, Masaru Shibata, Koji Uryu,
Jolien D. E. Creighton and John L. Friedman | Inferring the neutron star equation of state from binary inspiral
waveforms | Talk given at the 12th Marcel Grossman Meeting, Paris, France, 12-18
Jul 2009 | null | 10.1142/9789814374552_0046 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The properties of neutron star matter above nuclear density are not precisely
known. Gravitational waves emitted from binary neutron stars during their late
stages of inspiral and merger contain imprints of the neutron-star equation of
state. Measuring departures from the point-particle limit of the late inspiral
wav... | [
{
"created": "Wed, 11 Aug 2010 00:54:09 GMT",
"version": "v1"
}
] | 2017-10-04 | [
[
"Markakis",
"Charalampos",
""
],
[
"Read",
"Jocelyn S.",
""
],
[
"Shibata",
"Masaru",
""
],
[
"Uryu",
"Koji",
""
],
[
"Creighton",
"Jolien D. E.",
""
],
[
"Friedman",
"John L.",
""
]
] | The properties of neutron star matter above nuclear density are not precisely known. Gravitational waves emitted from binary neutron stars during their late stages of inspiral and merger contain imprints of the neutron-star equation of state. Measuring departures from the point-particle limit of the late inspiral wavef... |
1010.2898 | Burkhard Kleihaus | Burkhard Kleihaus, Jutta Kunz, Eugen Radu, and Maria J. Rodriguez | New generalized nonspherical black hole solutions | 47 pages, 11 figures, some comments added | JHEP 1102:058,2011 | 10.1007/JHEP02(2011)058 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present numerical evidence for the existence of several types of static
black hole solutions with a nonspherical event horizon topology in $d\geq 6$
spacetime dimensions. These asymptotically flat configurations are found for a
specific metric ansatz and can be viewed as higher dimensional counterparts of
the $d=5... | [
{
"created": "Thu, 14 Oct 2010 13:09:37 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Nov 2010 14:59:29 GMT",
"version": "v2"
}
] | 2011-02-15 | [
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Radu",
"Eugen",
""
],
[
"Rodriguez",
"Maria J.",
""
]
] | We present numerical evidence for the existence of several types of static black hole solutions with a nonspherical event horizon topology in $d\geq 6$ spacetime dimensions. These asymptotically flat configurations are found for a specific metric ansatz and can be viewed as higher dimensional counterparts of the $d=5$ ... |
gr-qc/0408039 | Jinn-Ouk Gong | Jinn-Ouk Gong | General Slow-Roll Spectrum for Gravitational Waves | 8 pages, no figure ; Discussion slightly expanded and minor typos
corrected | Class.Quant.Grav. 21 (2004) 5555-5562 | 10.1088/0264-9381/21/23/016 | KAIST-TH/2004-10 | gr-qc astro-ph hep-ph | null | We derive the power spectrum P_\psi(k) of the gravitational waves produced
during general classes of inflation with second order corrections. Using this
result, we also derive the spectrum and the spectral index in the standard
slow-roll approximation with new higher order corrections.
| [
{
"created": "Fri, 13 Aug 2004 07:29:03 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Aug 2004 07:36:39 GMT",
"version": "v2"
},
{
"created": "Sat, 16 Oct 2004 22:28:10 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Gong",
"Jinn-Ouk",
""
]
] | We derive the power spectrum P_\psi(k) of the gravitational waves produced during general classes of inflation with second order corrections. Using this result, we also derive the spectrum and the spectral index in the standard slow-roll approximation with new higher order corrections. |
gr-qc/9310030 | Khatsymovsky | V.Khatsymovsky | Can wormholes exist? | 10 pages, Plain LaTeX, preprint UUITP-20/1993 | Phys.Lett. B320 (1994) 234-240 | 10.1016/0370-2693(94)90650-5 | null | gr-qc | null | Renormalized vacuum expectation values of electromagnetic stress-energy
tensor are calculated in the background spherically-symmetrical metric of the
wormhole's topology. Covariant geodesic point separation method of
regularization is used. Violation of the weak energy condition at the throat of
wormhole takes place ... | [
{
"created": "Thu, 21 Oct 1993 15:39:25 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Oct 1993 10:46:41 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Khatsymovsky",
"V.",
""
]
] | Renormalized vacuum expectation values of electromagnetic stress-energy tensor are calculated in the background spherically-symmetrical metric of the wormhole's topology. Covariant geodesic point separation method of regularization is used. Violation of the weak energy condition at the throat of wormhole takes place fo... |
2205.00232 | Zheng-Wen Long | Shurui Wu, Bing-Qian Wang, Hao Chen and Zheng-Wen Long | Thermodynamics of the Bardeen Black Hole with quintessence matter on the
EGUP framework | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have used the extended generalized uncertainty principle to
investigate the thermodynamics of the Bardeen Black Hole with quintessence
matter on the EGUP framework. We started with a brief perusal of the Extended
generalized uncertainty principle. Subsequently, the EGUP-modified Hawking
temperature,... | [
{
"created": "Sat, 30 Apr 2022 10:47:00 GMT",
"version": "v1"
}
] | 2022-05-03 | [
[
"Wu",
"Shurui",
""
],
[
"Wang",
"Bing-Qian",
""
],
[
"Chen",
"Hao",
""
],
[
"Long",
"Zheng-Wen",
""
]
] | In this paper, we have used the extended generalized uncertainty principle to investigate the thermodynamics of the Bardeen Black Hole with quintessence matter on the EGUP framework. We started with a brief perusal of the Extended generalized uncertainty principle. Subsequently, the EGUP-modified Hawking temperature, h... |
gr-qc/0210094 | Thomas Thiemann | Thomas Thiemann | Lectures on Loop Quantum Gravity | 90 pages, Latex, 18 figures, uses graphicx and pstricks for coloured
text and graphics, based on lectures given at the 271st WE Heraeus Seminar
``Aspects of Quantum Gravity: From Theory to Experimental Search'', Bad
Honnef, Germany, February 25th -- March 1st, to appear in Lecture Notes in
Physics | Lect.Notes Phys.631:41-135,2003 | 10.1007/978-3-540-45230-0_3 | AEI-2002-087 | gr-qc hep-th math-ph math.MP | null | Quantum General Relativity (QGR), sometimes called Loop Quantum Gravity, has
matured over the past fifteen years to a mathematically rigorous candidate
quantum field theory of the gravitational field. The features that distinguish
it from other quantum gravity theories are 1) background independence and 2)
minimality... | [
{
"created": "Mon, 28 Oct 2002 14:53:35 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Thiemann",
"Thomas",
""
]
] | Quantum General Relativity (QGR), sometimes called Loop Quantum Gravity, has matured over the past fifteen years to a mathematically rigorous candidate quantum field theory of the gravitational field. The features that distinguish it from other quantum gravity theories are 1) background independence and 2) minimality o... |
1502.00951 | Amir Masoud Ghezelbash | A. M. Ghezelbash | Cosmological solutions in five dimensional Einstein-Maxwell-dilaton
theory | 14 pages, 4 figures | Phys. Rev. D 91, 084003 (2015) | 10.1103/PhysRevD.91.084003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct new classes of exact cosmological solutions to five dimensional
Einstein-Maxwell-dilaton theory with two coupling constants for the
dilaton-Maxwell term and dilaton-cosmological constant term. All the solutions
are non-stationary and the solutions that both coupling constants are non-zero
are almost regu... | [
{
"created": "Tue, 3 Feb 2015 18:31:30 GMT",
"version": "v1"
}
] | 2015-04-08 | [
[
"Ghezelbash",
"A. M.",
""
]
] | We construct new classes of exact cosmological solutions to five dimensional Einstein-Maxwell-dilaton theory with two coupling constants for the dilaton-Maxwell term and dilaton-cosmological constant term. All the solutions are non-stationary and the solutions that both coupling constants are non-zero are almost regula... |
1404.4815 | Tim Koslowski A | Tim A. Koslowski | Quantum Inflation of Classical Shapes | 14 pages, Latex | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I consider a quantum system that possesses key features of quantum shape
dynamics and show that the evolution of wave-packets will become increasingly
classical at late times and tend to evolve more and more like an expanding
classical system. At early times however, semiclassical effects become large
and lead to an ... | [
{
"created": "Fri, 18 Apr 2014 15:18:42 GMT",
"version": "v1"
}
] | 2014-04-21 | [
[
"Koslowski",
"Tim A.",
""
]
] | I consider a quantum system that possesses key features of quantum shape dynamics and show that the evolution of wave-packets will become increasingly classical at late times and tend to evolve more and more like an expanding classical system. At early times however, semiclassical effects become large and lead to an ex... |
2209.15572 | Ant\'onio Torres Manso | Mar Bastero-Gil and Ant\'onio Torres Manso | Parity violating gravitational waves at the end of inflation | Published version with \alpha-attractors potential; 21 pages, 11
figures | null | 10.1088/1475-7516/2023/08/001 | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | Inflaton-vector interactions of the type $\phi F\tilde{F}$ have provided
interesting phenomenology to tackle some of current problems in cosmology,
namely the vectors could constitute the dark matter component. It could also
lead to possible signatures imprinted in a gravitational wave spectrum. Through
this coupling... | [
{
"created": "Fri, 30 Sep 2022 16:31:13 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Aug 2023 10:20:35 GMT",
"version": "v2"
}
] | 2023-08-31 | [
[
"Bastero-Gil",
"Mar",
""
],
[
"Manso",
"António Torres",
""
]
] | Inflaton-vector interactions of the type $\phi F\tilde{F}$ have provided interesting phenomenology to tackle some of current problems in cosmology, namely the vectors could constitute the dark matter component. It could also lead to possible signatures imprinted in a gravitational wave spectrum. Through this coupling, ... |
1806.05467 | Thomas Buchert | Yong-Zhuang Li, Pierre Mourier, Thomas Buchert, David L. Wiltshire | Lagrangian theory of structure formation in relativistic cosmology. V.
Irrotational fluids | 28 pages, 7 captioned figures, matches published version in PRD | Phys. Rev. D 98, 043507 (2018) | 10.1103/PhysRevD.98.043507 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the general relativistic Lagrangian perturbation theory, recently
developed for the formation of cosmic structures in a dust continuum, to the
case of model universes containing a single fluid with a single-valued analytic
equation of state. Using a coframe-based perturbation approach, we investigate
evolut... | [
{
"created": "Thu, 14 Jun 2018 11:19:43 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Aug 2018 09:02:43 GMT",
"version": "v2"
}
] | 2018-08-10 | [
[
"Li",
"Yong-Zhuang",
""
],
[
"Mourier",
"Pierre",
""
],
[
"Buchert",
"Thomas",
""
],
[
"Wiltshire",
"David L.",
""
]
] | We extend the general relativistic Lagrangian perturbation theory, recently developed for the formation of cosmic structures in a dust continuum, to the case of model universes containing a single fluid with a single-valued analytic equation of state. Using a coframe-based perturbation approach, we investigate evolutio... |
gr-qc/0203054 | Hui Tang | Nguyen Suan Han and Nguyen Nhu Xuan | Planckian Scattering Beyond the Eikonal Approximation in the Functional
Approach | 15 pages, no figures | Eur.Phys.J.C24:643-651,2002 | 10.1007/s10052-002-0962-6 | null | gr-qc | null | In the framework of functional integration the non-leading terms to leading
eikonal behavior of the Planckian-energy scattering amplitude are calculated by
the straight-line path approximation. We show that the allowance for the
first-order correction terms leads to the appearance of retardation effect. The
singular ... | [
{
"created": "Fri, 15 Mar 2002 07:21:33 GMT",
"version": "v1"
}
] | 2011-09-13 | [
[
"Han",
"Nguyen Suan",
""
],
[
"Xuan",
"Nguyen Nhu",
""
]
] | In the framework of functional integration the non-leading terms to leading eikonal behavior of the Planckian-energy scattering amplitude are calculated by the straight-line path approximation. We show that the allowance for the first-order correction terms leads to the appearance of retardation effect. The singular ch... |
1010.5826 | Marcin Kazmierczak | Marcin Ka\'zmierczak | The Poincar\'e Gauge Theory of Gravty and the Immirzi parameter | 5 pages, extended version of proc. of 12 Marcel Grossman meeting | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The minimal coupling method proved to yield definite and correct physical
predictions when applied to fundamental fermions within the framework of
Yang--Mills theories of Standard Model. Similarly, the possibility of
formulating gravity as the Poincar\'e gauge theory gives the opportunity to
produce definite predicti... | [
{
"created": "Wed, 27 Oct 2010 23:30:36 GMT",
"version": "v1"
}
] | 2010-10-29 | [
[
"Kaźmierczak",
"Marcin",
""
]
] | The minimal coupling method proved to yield definite and correct physical predictions when applied to fundamental fermions within the framework of Yang--Mills theories of Standard Model. Similarly, the possibility of formulating gravity as the Poincar\'e gauge theory gives the opportunity to produce definite prediction... |
1409.2109 | Hristu Culetu | Hristu Culetu | On a regular modified C-metric | title changed, 7 pages, no figures | IARD10 Conference, IOP Conf. Series: Journal of Physics: Conf.
Series 845 (2017) 012006 | 10.1088/1742-6596/845/1/012006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A particular form of the C-metric is investigated, giving it a non-standard
interpretation and removing any singularity at $r = 0$. In the weak field limit
of the accelerating black hole, the proper acceleration $A$ of a static
observer is constant and the geometry becomes conformally-flat (anti de
Sitter). The stres... | [
{
"created": "Sun, 7 Sep 2014 11:42:48 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Dec 2014 12:20:52 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Jan 2019 22:32:28 GMT",
"version": "v3"
}
] | 2019-01-28 | [
[
"Culetu",
"Hristu",
""
]
] | A particular form of the C-metric is investigated, giving it a non-standard interpretation and removing any singularity at $r = 0$. In the weak field limit of the accelerating black hole, the proper acceleration $A$ of a static observer is constant and the geometry becomes conformally-flat (anti de Sitter). The stress ... |
2407.14378 | Artur Alho | Artur Alho and Claes Uggla | New simple and accurate approximations for quintessence | 27 pages, 6 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive new simple approximations for quintessence in a spatially
homogeneous, isotropic and flat spacetime. The approximations are typically an
order of magnitude more accurate than anything available in the literature,
which from an observational perspective makes numerical calculations
superfluous. For example, ... | [
{
"created": "Fri, 19 Jul 2024 15:06:16 GMT",
"version": "v1"
}
] | 2024-07-22 | [
[
"Alho",
"Artur",
""
],
[
"Uggla",
"Claes",
""
]
] | We derive new simple approximations for quintessence in a spatially homogeneous, isotropic and flat spacetime. The approximations are typically an order of magnitude more accurate than anything available in the literature, which from an observational perspective makes numerical calculations superfluous. For example, ou... |
gr-qc/9211018 | Bill Pezzaglia | William M. Pezzaglia Jr. (Physics, Santa Clara University) | Generalized Fierz Identities and the Superselection Rule for Geometric
Multispinors | 7 pages, Eliminated use of non-standard LaTeX macros, a square root
of \rho added in last line of paragraph below equation 2, updated reference
and address. Paper is summary of conference presentation, slides available at
http://www.clifford.org/wpezzag/talk/92wroclaw/ | Spinors, Twistors, Clifford Algebras and Quantum Deformations
(Proceedings of the Second Max Born Symposium, Wroclaw, Poland, Sept. 24-27,
1992)} Z. Oziewicz et al. (eds.), Kluwer Academic Publ. (1993), pp. 91-96 | null | SFSU-Th-92-04, clf-alg/pezz9202 | gr-qc hep-th | null | The inverse problem, to reconstruct the general multivector wave function
from the observable quadratic densities, is solved for 3D geometric algebra. It
is found that operators which are applied to the right side of the wave
function must be considered, and the standard Fierz identities do not
necessarily hold excep... | [
{
"created": "Sat, 14 Nov 1992 04:12:02 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Dec 2001 12:37:25 GMT",
"version": "v2"
}
] | 2009-09-25 | [
[
"Pezzaglia",
"William M.",
"Jr.",
"Physics, Santa Clara University"
]
] | The inverse problem, to reconstruct the general multivector wave function from the observable quadratic densities, is solved for 3D geometric algebra. It is found that operators which are applied to the right side of the wave function must be considered, and the standard Fierz identities do not necessarily hold except ... |
2212.12527 | Tomasz Paw{\l}owski | Maciej Kowalczyk, Tomasz Paw{\l}owski | Regularizations and quantum dynamics in loop quantum cosmology | RevTex, BibTex, 38 pages, 2 figures, extension of the MSc thesis
arXiv:2112.07786 | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of critical components of Loop Quantum Gravity (LQG) and Cosmology (LQC)
-- Thiemann regularization procedure is non-unique. Different choices of
particular prescriptions lead to models which differ in both mathematical
structure and physical predictions. Here we briefly recall a set of such
prescriptions propose... | [
{
"created": "Fri, 23 Dec 2022 18:40:57 GMT",
"version": "v1"
}
] | 2022-12-26 | [
[
"Kowalczyk",
"Maciej",
""
],
[
"Pawłowski",
"Tomasz",
""
]
] | One of critical components of Loop Quantum Gravity (LQG) and Cosmology (LQC) -- Thiemann regularization procedure is non-unique. Different choices of particular prescriptions lead to models which differ in both mathematical structure and physical predictions. Here we briefly recall a set of such prescriptions proposed ... |
2307.16093 | Richard Brito | Richard Brito, Shreya Shah | Extreme mass-ratio inspirals into black holes surrounded by scalar
clouds | 42 pages, 11 figures; v3: minor corrections. Accepted for publication
in Physical Review D | Phys. Rev. D 108, 084019 (2023) | 10.1103/PhysRevD.108.084019 | null | gr-qc astro-ph.CO astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study extreme mass-ratio binary systems in which a stellar mass compact
object spirals into a supermassive black hole surrounded by a scalar cloud.
Scalar clouds can form through superradiant instabilities of massive scalar
fields around spinning black holes and can also serve as a proxy for dark
matter halos. Our... | [
{
"created": "Sat, 29 Jul 2023 23:32:26 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Aug 2023 12:36:07 GMT",
"version": "v2"
},
{
"created": "Mon, 2 Oct 2023 17:40:05 GMT",
"version": "v3"
}
] | 2023-10-13 | [
[
"Brito",
"Richard",
""
],
[
"Shah",
"Shreya",
""
]
] | We study extreme mass-ratio binary systems in which a stellar mass compact object spirals into a supermassive black hole surrounded by a scalar cloud. Scalar clouds can form through superradiant instabilities of massive scalar fields around spinning black holes and can also serve as a proxy for dark matter halos. Our f... |
1508.02537 | Chun-Yen Lin | Chun-Yen Lin | Quantum Cauchy Surfaces in Canonical Quantum Gravity | 27 pages | Class. Quantum Grav. 33 (2016) 185009 | 10.1088/0264-9381/33/18/185009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For a Dirac theory of quantum gravity obtained from the refined algebraic
quantization procedure, we propose a quantum notion of Cauchy surfaces. In such
a theory, there is a kernel projector for the quantized scalar and momentum
constraints, which maps the kinematic Hilbert space $\mathbb K$ into the
physical Hilber... | [
{
"created": "Tue, 11 Aug 2015 09:47:17 GMT",
"version": "v1"
}
] | 2016-09-07 | [
[
"Lin",
"Chun-Yen",
""
]
] | For a Dirac theory of quantum gravity obtained from the refined algebraic quantization procedure, we propose a quantum notion of Cauchy surfaces. In such a theory, there is a kernel projector for the quantized scalar and momentum constraints, which maps the kinematic Hilbert space $\mathbb K$ into the physical Hilbert ... |
2403.00711 | Lakshmi J Naik | O. P. Jyothilakshmi, Lakshmi J. Naik, V. Sreekanth | Non-radial oscillations in anisotropic dark energy stars | 9 pages, 7 figures | null | 10.1140/epjc/s10052-024-12776-9 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We study the non-radial $f$-mode oscillations of both isotropic and
anisotropic dark energy stars by using the modified Chaplygin prescription of
dark energy to model the stellar matter. The anisotropic pressure in the system
is modeled with Bowers-Liang prescription. By solving the stellar structure
equations in pre... | [
{
"created": "Fri, 1 Mar 2024 17:52:46 GMT",
"version": "v1"
}
] | 2024-07-23 | [
[
"Jyothilakshmi",
"O. P.",
""
],
[
"Naik",
"Lakshmi J.",
""
],
[
"Sreekanth",
"V.",
""
]
] | We study the non-radial $f$-mode oscillations of both isotropic and anisotropic dark energy stars by using the modified Chaplygin prescription of dark energy to model the stellar matter. The anisotropic pressure in the system is modeled with Bowers-Liang prescription. By solving the stellar structure equations in prese... |
gr-qc/0503082 | Alexander Petrov Nikolaevich | A. N. Petrov | The Schwarzschild black hole as a point particle | LATEX, 8 pages, no figures | Found.Phys.Lett. 18 (2005) 477-489 | 10.1007/s10702-005-7538-2 | null | gr-qc | null | The description of a point mass in general relativity (GR) is given in the
framework of the field formulation of GR where all the dynamical fields,
including the gravitational field, are considered in a fixed background
spacetime. With the use of stationary (not static) coordinates non-singular at
the horizon, the Sc... | [
{
"created": "Sat, 19 Mar 2005 09:02:35 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Jul 2005 10:11:40 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Petrov",
"A. N.",
""
]
] | The description of a point mass in general relativity (GR) is given in the framework of the field formulation of GR where all the dynamical fields, including the gravitational field, are considered in a fixed background spacetime. With the use of stationary (not static) coordinates non-singular at the horizon, the Schw... |
1911.04562 | Gustavo Dotti | Gustavo Dotti and Juli\'an M. Fern\'andez T\'io | Black hole nonmodal linear stability: even perturbations in the
Reissner-Nordstr\"om case | null | Phys. Rev. D 101, 024034 (2020) | 10.1103/PhysRevD.101.024034 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is a companion of [Phys. Rev. D 95, 124041 (2017)] in which,
following a program on black hole nonmodal linear stability initiated in Phys.
Rev. Lett. 112 (2014) 191101, odd perturbations of the Einstein-Maxwell
equations around a Reissner-Nordstr\"om (A)dS black hole were analyzed. Here we
complete the pr... | [
{
"created": "Mon, 11 Nov 2019 20:57:57 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Jan 2020 17:58:59 GMT",
"version": "v2"
}
] | 2020-01-28 | [
[
"Dotti",
"Gustavo",
""
],
[
"Tío",
"Julián M. Fernández",
""
]
] | This paper is a companion of [Phys. Rev. D 95, 124041 (2017)] in which, following a program on black hole nonmodal linear stability initiated in Phys. Rev. Lett. 112 (2014) 191101, odd perturbations of the Einstein-Maxwell equations around a Reissner-Nordstr\"om (A)dS black hole were analyzed. Here we complete the proo... |
2212.13776 | Fabio Scardigli | Fabio Scardigli | Uncertainty principle and gravity | 7 pages, 3 figures. Presented at the Conference "Eternity between
Space and Time", Padova, May 19-21, 2022 | "Eternity between Space and Time", De Gruyter (Berlin), 2024 | 10.1515/9783111313610 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | We give a pedagogical introduction to the generalized uncertainty principle
(GUP), by showing how it naturally emerges when the action of gravity is taken
into account in measurement processes. We review some physical predictions of
the GUP. In particular we focus on the bounds that present experimental tests
can put... | [
{
"created": "Wed, 28 Dec 2022 10:39:04 GMT",
"version": "v1"
}
] | 2024-05-07 | [
[
"Scardigli",
"Fabio",
""
]
] | We give a pedagogical introduction to the generalized uncertainty principle (GUP), by showing how it naturally emerges when the action of gravity is taken into account in measurement processes. We review some physical predictions of the GUP. In particular we focus on the bounds that present experimental tests can put o... |
gr-qc/0511077 | Aleksandar Mikovic | A. Mikovic | Quantum Gravity as a Deformed Topological Quantum Field Theory | 7 pages, talk presented at the QG05 conference, 12-16 September 2005,
Cala Gonone, Italy | J.Phys.Conf.Ser.33:266-270,2006 | 10.1088/1742-6596/33/1/029 | null | gr-qc hep-th math-ph math.MP | null | It is known that the Einstein-Hilbert action with a positive cosmological
constant can be represented as a perturbation of the SO(4,1) BF theory by a
symmetry-breaking term quadratic in the B field. Introducing fermionic matter
generates additional terms in the action which are polynomial in the tetrads
and the spin ... | [
{
"created": "Mon, 14 Nov 2005 18:50:28 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Mikovic",
"A.",
""
]
] | It is known that the Einstein-Hilbert action with a positive cosmological constant can be represented as a perturbation of the SO(4,1) BF theory by a symmetry-breaking term quadratic in the B field. Introducing fermionic matter generates additional terms in the action which are polynomial in the tetrads and the spin co... |
1910.14414 | Nils A. Nilsson | Nils A. Nilsson | Preferred-frame Effects, the $H_0$ Tension, and Probes of
Ho\v{r}ava-Lifshitz Gravity | Clarified methodology, restricted attention to one model. 10 pages,
no figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss implications on the $H_0$ tension due to preferred-frame effects
in the context of Ho\v{r}ava-Lifshitz gravity. By using a combination of
low-redshift data (Sne1a, elliptical and lenticular galaxies, GRB's, and
quasars) we study the $H_0$ tension and its appearance as a preferred-frame
effect, as well as p... | [
{
"created": "Thu, 31 Oct 2019 12:13:35 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Nov 2019 12:41:43 GMT",
"version": "v2"
},
{
"created": "Tue, 31 Dec 2019 12:10:56 GMT",
"version": "v3"
}
] | 2020-01-01 | [
[
"Nilsson",
"Nils A.",
""
]
] | We discuss implications on the $H_0$ tension due to preferred-frame effects in the context of Ho\v{r}ava-Lifshitz gravity. By using a combination of low-redshift data (Sne1a, elliptical and lenticular galaxies, GRB's, and quasars) we study the $H_0$ tension and its appearance as a preferred-frame effect, as well as pre... |
2106.15574 | Jose Luis Bl\'azquez-Salcedo | Jose Luis Bl\'azquez-Salcedo, Burkhard Kleihaus, Jutta Kunz | Scalarized Black Holes | Proceedings of the International Online Workshop on Relativistic
Astrophysics and Gravitation, Scalarized Black Holes, Tashkent, Uzbekistan,
May 2021 | null | 10.1007/s40065-021-00349-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black holes represent outstanding astrophysical laboratories to test the
strong gravity regime, since alternative theories of gravity may predict black
hole solutions whose may differ distinctly from those of General Relativity.
When higher curvature terms are included in the gravitational action as, for
instance, in... | [
{
"created": "Tue, 29 Jun 2021 17:09:54 GMT",
"version": "v1"
}
] | 2022-03-03 | [
[
"Blázquez-Salcedo",
"Jose Luis",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | Black holes represent outstanding astrophysical laboratories to test the strong gravity regime, since alternative theories of gravity may predict black hole solutions whose may differ distinctly from those of General Relativity. When higher curvature terms are included in the gravitational action as, for instance, in t... |
1601.03734 | Elliot Nelson | Elliot Nelson | Quantum Decoherence During Inflation from Gravitational Nonlinearities | 32 pages, 10 figures. Comments welcome | null | 10.1088/1475-7516/2016/03/022 | null | gr-qc astro-ph.CO hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the inflationary quantum-to-classical transition for the adiabatic
curvature perturbation $\zeta$ due to quantum decoherence, focusing on the role
played by squeezed-limit mode couplings. We evolve the quantum state $\Psi$ in
the Schr\"odinger picture, for a generic cubic coupling to additional
environment d... | [
{
"created": "Thu, 14 Jan 2016 21:00:00 GMT",
"version": "v1"
}
] | 2016-03-23 | [
[
"Nelson",
"Elliot",
""
]
] | We study the inflationary quantum-to-classical transition for the adiabatic curvature perturbation $\zeta$ due to quantum decoherence, focusing on the role played by squeezed-limit mode couplings. We evolve the quantum state $\Psi$ in the Schr\"odinger picture, for a generic cubic coupling to additional environment deg... |
gr-qc/9407003 | William Bruckman | William Bruckman | Generation of Electro and Magneto Static Solutions of the Scalar-Tensor
Theories of Gravity | 28 pages, LaTeX | null | null | null | gr-qc | null | The field equations of the scalar-tensor theories of gravitation are
presented in different representations, related to each other by conformal
transformations of the metric. One of the representations resembles the
Jordan-Brans-Dicke theory, and is the starting point for the generation of
exact electrostatic and mag... | [
{
"created": "Tue, 5 Jul 1994 13:06:49 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bruckman",
"William",
""
]
] | The field equations of the scalar-tensor theories of gravitation are presented in different representations, related to each other by conformal transformations of the metric. One of the representations resembles the Jordan-Brans-Dicke theory, and is the starting point for the generation of exact electrostatic and magne... |
gr-qc/0505032 | Thomas Thiemann | Johannes Brunnemann, Thomas Thiemann | On (Cosmological) Singularity Avoidance in Loop Quantum Gravity | 34 pages, 16 figures | Class.Quant.Grav. 23 (2006) 1395-1428 | 10.1088/0264-9381/23/5/001 | AEI-2005-098 | gr-qc astro-ph hep-th math-ph math.MP | null | Loop Quantum Cosmology (LQC), mainly due to Bojowald, is not the cosmological
sector of Loop Quantum Gravity (LQG). Rather, LQC consists of a truncation of
the phase space of classical General Relativity to spatially homogeneous
situations which is then quantized by the methods of LQG. Thus, LQC is a
quantum mechanic... | [
{
"created": "Sun, 8 May 2005 20:54:01 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Brunnemann",
"Johannes",
""
],
[
"Thiemann",
"Thomas",
""
]
] | Loop Quantum Cosmology (LQC), mainly due to Bojowald, is not the cosmological sector of Loop Quantum Gravity (LQG). Rather, LQC consists of a truncation of the phase space of classical General Relativity to spatially homogeneous situations which is then quantized by the methods of LQG. Thus, LQC is a quantum mechanical... |
1509.05824 | Pietro Don\`a | Pietro Don\`a, Antonino Marcian\`o, Yang Zhang, Claudia Antolini | Non-Perturbative Yang-Mills Condensate as Dark Energy | null | Phys. Rev. D 93, 043012 (2016) | 10.1103/PhysRevD.93.043012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Models based on Yang-Mills condensate (YMC) have been advocated in the
literature and claimed to be successful candidates to explain dark energy.
Several instantiations of this simple idea have been considered, the most
promising of which are reviewed here. Nevertheless, results previously attained
heavily relied on ... | [
{
"created": "Sat, 19 Sep 2015 00:01:45 GMT",
"version": "v1"
}
] | 2016-03-02 | [
[
"Donà",
"Pietro",
""
],
[
"Marcianò",
"Antonino",
""
],
[
"Zhang",
"Yang",
""
],
[
"Antolini",
"Claudia",
""
]
] | Models based on Yang-Mills condensate (YMC) have been advocated in the literature and claimed to be successful candidates to explain dark energy. Several instantiations of this simple idea have been considered, the most promising of which are reviewed here. Nevertheless, results previously attained heavily relied on th... |
1112.3270 | Daniele Oriti | Aristide Baratin, Daniele Oriti | Ten questions on Group Field Theory (and their tentative answers) | 10 pages; contribution to the proceedings of the Loops'11 conference
(CSIC, Madrid, Spain, 23-28 May 2011); to be published by Journal of Physics:
Conference Series (JPCS) | J. Phys.: Conf. Ser. 360 (2012) 012002 | 10.1088/1742-6596/360/1/012002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a short and non-technical summary of our current knowledge and
some possible perspectives on the group field theory formalism for quantum
gravity, in the form of a (partial) FAQ (with answers). Some of the questions
and answers relate to aspects of the formalism that concern loop quantum
gravity. This summ... | [
{
"created": "Wed, 14 Dec 2011 16:38:18 GMT",
"version": "v1"
}
] | 2015-06-03 | [
[
"Baratin",
"Aristide",
""
],
[
"Oriti",
"Daniele",
""
]
] | We provide a short and non-technical summary of our current knowledge and some possible perspectives on the group field theory formalism for quantum gravity, in the form of a (partial) FAQ (with answers). Some of the questions and answers relate to aspects of the formalism that concern loop quantum gravity. This summar... |
1608.01253 | Juan Antonio Morales Lladosa | Ramon Lapiedra and Juan Antonio Morales-Lladosa | Spherical symmetric parabolic dust collapse: ${\cal C}^{1}$ matching
metric with zero intrinsic energy | 25 pages, 3 figures. A final Note has been added to the published
version | International Journal of Modern Physics D, Vol. 27 No. 5 (2018)
1850057 | 10.1142/S0218271818500578 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The collapse of marginally bound, inhomogeneous, pressureless (dust) matter,
in spherical symmetry, is considered. The starting point is not, in this case,
the integration of the Einstein equations from some suitable initial
conditions. Instead, starting from the corresponding general exact solution of
these equation... | [
{
"created": "Wed, 3 Aug 2016 16:43:34 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Apr 2018 15:33:15 GMT",
"version": "v2"
}
] | 2018-04-27 | [
[
"Lapiedra",
"Ramon",
""
],
[
"Morales-Lladosa",
"Juan Antonio",
""
]
] | The collapse of marginally bound, inhomogeneous, pressureless (dust) matter, in spherical symmetry, is considered. The starting point is not, in this case, the integration of the Einstein equations from some suitable initial conditions. Instead, starting from the corresponding general exact solution of these equations,... |
gr-qc/0010094 | Irina Radinschi | Irina Radinschi | Energy of a Conformal Scalar Dyon Black Hole | 3 pages, no figures | Mod.Phys.Lett.A15:2171-2176,2000 | 10.1142/S0217732300002498 | null | gr-qc | null | We obtain the energy of a conformal scalar dyon black hole (CSD) by using the
energy-momentum complexes of Tolman and M{\o}ller. The total gravitational
energy is given by the CSD charge in the both prescriptions.
| [
{
"created": "Wed, 25 Oct 2000 15:23:06 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Radinschi",
"Irina",
""
]
] | We obtain the energy of a conformal scalar dyon black hole (CSD) by using the energy-momentum complexes of Tolman and M{\o}ller. The total gravitational energy is given by the CSD charge in the both prescriptions. |
gr-qc/9409002 | null | Shawn J. Kolitch | Qualitative Analysis of Brans-Dicke Universes with a Cosmological
Constant | Paper has been shortened and discussion clarified. The stability
analysis is now presented in tabular form. Some references added | Annals Phys. 246 (1996) 121-132 | 10.1006/aphy.1996.0022 | null | gr-qc | null | Solutions to flat space Friedmann-Robertson-Walker cosmologies in Brans-Dicke
theory with a cosmological constant are investigated. The matter is modelled as
a $\gamma$-law perfect fluid. The field equations are reduced from fourth order
to second order through a change of variables, and the resulting
two-dimensional... | [
{
"created": "Thu, 1 Sep 1994 20:10:09 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Feb 1995 16:21:44 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Kolitch",
"Shawn J.",
""
]
] | Solutions to flat space Friedmann-Robertson-Walker cosmologies in Brans-Dicke theory with a cosmological constant are investigated. The matter is modelled as a $\gamma$-law perfect fluid. The field equations are reduced from fourth order to second order through a change of variables, and the resulting two-dimensional s... |
2103.15705 | Andreu Maso-Ferrando | Andreu Mas\'o-Ferrando, Nicolas Sanchis-Gual, Jos\'e A. Font, Gonzalo
J. Olmo | Boson stars in Palatini $f(\mathcal{R})$ gravity | 16 pages, 10 figures, RevTex4-1 | null | 10.1088/1361-6382/ac1fd0 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore equilibrium solutions of spherically symmetric boson stars in the
Palatini formulation of $f(\mathcal{R})$ gravity. We account for the
modifications introduced in the gravitational sector by using a recently
established correspondence between modified gravity with scalar matter and
general relativity with ... | [
{
"created": "Mon, 29 Mar 2021 15:44:17 GMT",
"version": "v1"
}
] | 2021-09-22 | [
[
"Masó-Ferrando",
"Andreu",
""
],
[
"Sanchis-Gual",
"Nicolas",
""
],
[
"Font",
"José A.",
""
],
[
"Olmo",
"Gonzalo J.",
""
]
] | We explore equilibrium solutions of spherically symmetric boson stars in the Palatini formulation of $f(\mathcal{R})$ gravity. We account for the modifications introduced in the gravitational sector by using a recently established correspondence between modified gravity with scalar matter and general relativity with mo... |
0809.2331 | Gilberto Medeiros Kremer | Rudinei C. de Souza and Gilberto M. Kremer | Constraining non-minimally coupled tachyon fields by Noether symmetry | 11 pages, 5 figures. Version accepted for publication in Classical
and Quantum Gravity | Class.Quant.Grav.26:135008,2009 | 10.1088/0264-9381/26/13/135008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A model for a spatially flat homogeneous and isotropic Universe whose
gravitational sources are a pressureless matter field and a tachyon field
non-minimally coupled to the gravitational field is analyzed. Noether symmetry
is used to find the expressions for the potential density and for the coupling
function, and it... | [
{
"created": "Sat, 13 Sep 2008 11:17:23 GMT",
"version": "v1"
},
{
"created": "Tue, 26 May 2009 11:05:53 GMT",
"version": "v2"
}
] | 2010-04-30 | [
[
"de Souza",
"Rudinei C.",
""
],
[
"Kremer",
"Gilberto M.",
""
]
] | A model for a spatially flat homogeneous and isotropic Universe whose gravitational sources are a pressureless matter field and a tachyon field non-minimally coupled to the gravitational field is analyzed. Noether symmetry is used to find the expressions for the potential density and for the coupling function, and it i... |
1806.05937 | Thomas Zilker | David Gr\"uber and Hanno Sahlmann and Thomas Zilker | The geometry and entanglement entropy of surfaces in loop quantum
gravity | null | Phys. Rev. D 98, 066009 (2018) | 10.1103/PhysRevD.98.066009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In loop quantum gravity, the area element of embedded spatial surfaces is
given by a well-defined operator. We further characterize the quantized
geometry of such surfaces by proposing definitions for operators quantizing
scalar curvature and mean curvature. By investigating their properties, we shed
light on the nat... | [
{
"created": "Fri, 15 Jun 2018 12:56:46 GMT",
"version": "v1"
}
] | 2018-09-26 | [
[
"Grüber",
"David",
""
],
[
"Sahlmann",
"Hanno",
""
],
[
"Zilker",
"Thomas",
""
]
] | In loop quantum gravity, the area element of embedded spatial surfaces is given by a well-defined operator. We further characterize the quantized geometry of such surfaces by proposing definitions for operators quantizing scalar curvature and mean curvature. By investigating their properties, we shed light on the natur... |
1604.08365 | Mariam Bouhmadi-Lopez | Imanol Albarran, Mariam Bouhmadi-L\'opez, Claus Kiefer, Jo\~ao Marto,
Paulo Vargas Moniz | Classical and quantum cosmology of the little rip abrupt event | 17 pages, 3 figures, RevTex4-1. Heavily revised version: equations
corrected and a new appendix added. Physical conclusions unchanged. Version
accepted in PRD | Phys. Rev. D 94, 063536 (2016) | 10.1103/PhysRevD.94.063536 | null | gr-qc astro-ph.CO hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze from a classical and quantum point of view the behavior of the
universe close to a little rip, which can be interpreted as a big rip sent
towards the infinite future. Like a big rip singularity, a little rip implies
the destruction of all bounded structure in the Universe and is thus an event
where quantum... | [
{
"created": "Thu, 28 Apr 2016 10:19:11 GMT",
"version": "v1"
},
{
"created": "Sat, 10 Sep 2016 13:43:35 GMT",
"version": "v2"
}
] | 2016-10-05 | [
[
"Albarran",
"Imanol",
""
],
[
"Bouhmadi-López",
"Mariam",
""
],
[
"Kiefer",
"Claus",
""
],
[
"Marto",
"João",
""
],
[
"Moniz",
"Paulo Vargas",
""
]
] | We analyze from a classical and quantum point of view the behavior of the universe close to a little rip, which can be interpreted as a big rip sent towards the infinite future. Like a big rip singularity, a little rip implies the destruction of all bounded structure in the Universe and is thus an event where quantum e... |
1706.07877 | \.Izzet Sakall{\i} | H. G\"ursel, G. Tokg\"oz, and \.Izzet Sakall{\i} | Linear Stability of Mandal-Sengupta-Wadia Black Holes | Accepted for Publication in Modern Physics Letters A. This work is
the result of an idea appeared during the PhD course of PHYS603 "Special
Topics in General Relativity" (EMU-Physics Department). I (\.{I}zzet
Sakall{\i}) thank to my PhD students (H. G\"ursel and G. Tokg\"oz) for their
great efforts | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter, the linear stability of static Mandal-Sengupta-Wadia (MSW)
black holes in $(2+1)$-dimensional gravity against circularly symmetric
perturbations is studied. Our analysis only applies to non-extremal
configurations, thus it leaves out the case of the extremal (2+1) MSW solution.
The associated fields a... | [
{
"created": "Fri, 23 Jun 2017 22:03:03 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Jan 2019 16:09:45 GMT",
"version": "v2"
}
] | 2019-01-16 | [
[
"Gürsel",
"H.",
""
],
[
"Tokgöz",
"G.",
""
],
[
"Sakallı",
"İzzet",
""
]
] | In this letter, the linear stability of static Mandal-Sengupta-Wadia (MSW) black holes in $(2+1)$-dimensional gravity against circularly symmetric perturbations is studied. Our analysis only applies to non-extremal configurations, thus it leaves out the case of the extremal (2+1) MSW solution. The associated fields are... |
2306.14938 | Ankit Kumar | Ankit Kumar, Yen-Kheng Lim, P. Arumugam, Tom Zlosnik, Tomasz Paterek | Probing Modified Gravity with Entanglement of Microspheres | Accepted for publication as a Letter in Physical Review D | Phys. Rev. D 109, L101501 (2024) | 10.1103/PhysRevD.109.L101501 | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | While a wide variety of astrophysical and cosmological phenomena suggest the
presence of Dark Matter, all evidence remains via its gravitational effect on
the known matter. As such, it is conceivable that this evidence could be
explained by a modification to gravitation and/or concepts of inertia. Various
formulation... | [
{
"created": "Mon, 26 Jun 2023 15:38:55 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Apr 2024 13:05:39 GMT",
"version": "v2"
}
] | 2024-05-14 | [
[
"Kumar",
"Ankit",
""
],
[
"Lim",
"Yen-Kheng",
""
],
[
"Arumugam",
"P.",
""
],
[
"Zlosnik",
"Tom",
""
],
[
"Paterek",
"Tomasz",
""
]
] | While a wide variety of astrophysical and cosmological phenomena suggest the presence of Dark Matter, all evidence remains via its gravitational effect on the known matter. As such, it is conceivable that this evidence could be explained by a modification to gravitation and/or concepts of inertia. Various formulations ... |
gr-qc/0607084 | Charles Torre | C. G. Torre | Schrodinger representation for the polarized Gowdy model | 13 pages | null | 10.1088/0264-9381/24/1/001 | null | gr-qc hep-th math-ph math.MP | null | The polarized ${\bf T}^3$ Gowdy model is, in a standard gauge, characterized
by a point particle degree of freedom and a scalar field degree of freedom
obeying a linear field equation on ${\bf R}\times{\bf S}^1$. The Fock
representation of the scalar field has been well-studied. Here we construct the
Schrodinger repr... | [
{
"created": "Thu, 20 Jul 2006 16:55:12 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Torre",
"C. G.",
""
]
] | The polarized ${\bf T}^3$ Gowdy model is, in a standard gauge, characterized by a point particle degree of freedom and a scalar field degree of freedom obeying a linear field equation on ${\bf R}\times{\bf S}^1$. The Fock representation of the scalar field has been well-studied. Here we construct the Schrodinger repres... |
2312.15714 | Yi Zhang | Yi Zhang, Hong Liu, Dan Wen, Hongsheng Zhang | Strong lensing as a probe of braneworld | 15 pages, 5 figures. arXiv admin note: text overlap with
arXiv:hep-th/0406252 by other authors | null | null | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | For the first time, we use the Event Horizon Telescope (EHT) data to
constrain the parameters of braneworld black holes which constrain
$\epsilon=0.0285^{+0.0888+0.1456}_{-0.0895-0.1475}$ for the anisotropic black
hole and $q=-0.0305^{+0.1034+0.1953}_{-0.0895-0.1470}$ for the tidal
Reissner-Nordstr$\ddot{o}$m (RN) bl... | [
{
"created": "Mon, 25 Dec 2023 12:52:39 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Dec 2023 01:50:39 GMT",
"version": "v2"
},
{
"created": "Thu, 25 Jul 2024 12:26:59 GMT",
"version": "v3"
}
] | 2024-07-26 | [
[
"Zhang",
"Yi",
""
],
[
"Liu",
"Hong",
""
],
[
"Wen",
"Dan",
""
],
[
"Zhang",
"Hongsheng",
""
]
] | For the first time, we use the Event Horizon Telescope (EHT) data to constrain the parameters of braneworld black holes which constrain $\epsilon=0.0285^{+0.0888+0.1456}_{-0.0895-0.1475}$ for the anisotropic black hole and $q=-0.0305^{+0.1034+0.1953}_{-0.0895-0.1470}$ for the tidal Reissner-Nordstr$\ddot{o}$m (RN) blac... |
1610.07350 | Shoichiro Miyashita | Shoichiro Miyashita, Kei-ichi Maeda | AdS Monopole Black Hole and Phase Transition | 16 pages, 34 figures | Phys. Rev. D 94, 124037 (2016) | 10.1103/PhysRevD.94.124037 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Einstein-SO(3)Yang-Mills-Higgs system with a negative
cosmological constant, and find the monopole black hole solutions as well as
the trivial Reissner-Nordstr\"{o}m black hole. We discuss thermodynamical
stability of the monopole black hole in an isolated system. We expect a phase
transition between tho... | [
{
"created": "Mon, 24 Oct 2016 10:29:14 GMT",
"version": "v1"
}
] | 2016-12-28 | [
[
"Miyashita",
"Shoichiro",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | We study the Einstein-SO(3)Yang-Mills-Higgs system with a negative cosmological constant, and find the monopole black hole solutions as well as the trivial Reissner-Nordstr\"{o}m black hole. We discuss thermodynamical stability of the monopole black hole in an isolated system. We expect a phase transition between those... |
2307.10804 | Sanjar Shaymatov | Sanjar Shaymatov, Bobomurat Ahmedov, Mariafelicia De Laurentis,
Mubasher Jamil, Qiang Wu, Anzhong Wang, Mustapha Azreg-A\"inou | On the parameters of the spherically symmetric parametrized
Rezzolla-Zhidenko spacetime through solar system tests, orbit of S2 star
about Sgr A$^\star$, and quasiperiodic oscillations | 20 pages, 2 tables, 5 captioned figures; references added, minor
changes made. Accepted for publication in ApJ | The Astrophysical Journal 959:6 (2023) | 10.3847/1538-4357/acfcba | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we find the higher order expansion parameters $\alpha$ and
$\lambda$ of spherically symmetric parametrized Rezzolla--Zhidenko (PRZ)
spacetime by using its functions of the radial coordinate. We subject the
parameters of this spacetime to classical tests including weak gravitational
field effects in Sol... | [
{
"created": "Thu, 20 Jul 2023 12:14:54 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Oct 2023 20:21:15 GMT",
"version": "v2"
}
] | 2023-11-30 | [
[
"Shaymatov",
"Sanjar",
""
],
[
"Ahmedov",
"Bobomurat",
""
],
[
"De Laurentis",
"Mariafelicia",
""
],
[
"Jamil",
"Mubasher",
""
],
[
"Wu",
"Qiang",
""
],
[
"Wang",
"Anzhong",
""
],
[
"Azreg-Aïnou",
"Mustapha",
... | In this paper, we find the higher order expansion parameters $\alpha$ and $\lambda$ of spherically symmetric parametrized Rezzolla--Zhidenko (PRZ) spacetime by using its functions of the radial coordinate. We subject the parameters of this spacetime to classical tests including weak gravitational field effects in Solar... |
gr-qc/0504009 | Louis Scheffer | Louis K. Scheffer | Better Lunar Ranges with Fewer Photons - Resolving the Lunar
Retro-reflectors | 12 pages; 11 eps figures | null | null | null | gr-qc | null | Because of lunar librations, the retroreflectors left on the moon do not, in
general, face directly at the Earth. Usually this is regarded as a
disadvantage. It results in a spread of arrival times, because each cube that
comprises the retroreflector is at a slightly different distance from the
earth. However, we can... | [
{
"created": "Sat, 2 Apr 2005 06:18:52 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Scheffer",
"Louis K.",
""
]
] | Because of lunar librations, the retroreflectors left on the moon do not, in general, face directly at the Earth. Usually this is regarded as a disadvantage. It results in a spread of arrival times, because each cube that comprises the retroreflector is at a slightly different distance from the earth. However, we can t... |
2010.08733 | Bing-Jyun Tsao | Bing-Jyun Tsao, Roland Haas, Antonios Tsokaros | Source term method for binary neutron stars initial data | 24 pages, 15 figures | null | 10.1088/1361-6382/abfc29 | null | gr-qc physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The initial condition problem for a binary neutron star system requires a
Poisson equation solver for the velocity potential with a Neumann-like boundary
condition on the surface of the star. Difficulties that arise in this boundary
value problem are: a) the boundary is not known a-priori, but constitutes part
of the... | [
{
"created": "Sat, 17 Oct 2020 07:27:11 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Feb 2021 09:20:09 GMT",
"version": "v2"
},
{
"created": "Sun, 20 Jun 2021 11:16:52 GMT",
"version": "v3"
}
] | 2021-07-07 | [
[
"Tsao",
"Bing-Jyun",
""
],
[
"Haas",
"Roland",
""
],
[
"Tsokaros",
"Antonios",
""
]
] | The initial condition problem for a binary neutron star system requires a Poisson equation solver for the velocity potential with a Neumann-like boundary condition on the surface of the star. Difficulties that arise in this boundary value problem are: a) the boundary is not known a-priori, but constitutes part of the s... |
gr-qc/0611117 | Alejandro Satz | J. Louko, A. Satz | A new expression for the transition rate of an accelerated particle
detector | 3 pages. Talk given at the Eleventh Marcel Grossmann Meeting (Berlin,
Germany, July 23 - 29, 2006). Submitted to the Conference Proceedings | null | null | null | gr-qc | null | We analyse the instantaneous transition rate of an accelerated Unruh-DeWitt
particle detector whose coupling to a quantum field on Minkowski space is
regularised by a finite spatial profile. We show, under mild technical
assumptions, that the zero size limit of the detector response is well defined,
independent of th... | [
{
"created": "Wed, 22 Nov 2006 18:23:55 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Louko",
"J.",
""
],
[
"Satz",
"A.",
""
]
] | We analyse the instantaneous transition rate of an accelerated Unruh-DeWitt particle detector whose coupling to a quantum field on Minkowski space is regularised by a finite spatial profile. We show, under mild technical assumptions, that the zero size limit of the detector response is well defined, independent of the ... |
gr-qc/0102077 | Sung-Won Kim | Sung-Won Kim and Hyunjoo Lee | Exact solutions of charged wormhole | 9 pages, Revtex, no figures, to appear in Phys. Rev. D(2001) | Phys.Rev. D63 (2001) 064014 | 10.1103/PhysRevD.63.064014 | null | gr-qc | null | In this paper, the backreaction to the traversable Lorentzian wormhole
spacetime by the scalar field or electric charge is considered to find the
exact solutions. The charges play the role of the additional matter to the
static wormhole which is already constructed by the exotic matter. The
stability conditions for t... | [
{
"created": "Sat, 17 Feb 2001 06:18:34 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Kim",
"Sung-Won",
""
],
[
"Lee",
"Hyunjoo",
""
]
] | In this paper, the backreaction to the traversable Lorentzian wormhole spacetime by the scalar field or electric charge is considered to find the exact solutions. The charges play the role of the additional matter to the static wormhole which is already constructed by the exotic matter. The stability conditions for the... |
gr-qc/0603009 | Eric Gourgoulhon | Eric Gourgoulhon (LUTH, CNRS / Observatoire de Paris) | An introduction to relativistic hydrodynamics | 37 pages, 5 figures, lecture given at the School "Astrophysical Fluid
Dynamics" (Cargese, France, 9-13 May 2005) organized by B. Dubrulle & M.
Rieutord (EDP Sciences, in press) | EASPubl.Ser.21:43,2006 | 10.1051/eas:2006106 | null | gr-qc astro-ph physics.flu-dyn | null | This lecture provides some introduction to perfect fluid dynamics within the
framework of general relativity. The presentation is based on the
Carter-Lichnerowicz approach. It has the advantage over the more traditional
approach of leading very straightforwardly to important conservation laws, such
as the relativisti... | [
{
"created": "Sun, 5 Mar 2006 14:58:26 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Gourgoulhon",
"Eric",
"",
"LUTH, CNRS / Observatoire de Paris"
]
] | This lecture provides some introduction to perfect fluid dynamics within the framework of general relativity. The presentation is based on the Carter-Lichnerowicz approach. It has the advantage over the more traditional approach of leading very straightforwardly to important conservation laws, such as the relativistic ... |
2108.04492 | V. G. Gurzadyan | M. Samsonyan, A.A. Kocharyan, A. Stepanian, V.G. Gurzadyan | Cosmic voids and induced hyperbolicity. III. tracing redshift dependence | 6 pages, 2 figures; The European Physical Journal Plus (in press) | Eur. Phys. J. Plus 136, 821 (2021) | 10.1140/epjp/s13360-021-01817-x | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | The currently released datasets of the observational surveys reveal the
redshift dependence of the physical features of cosmic voids. We study the void
induced hyperbolicity, that is the deviation of the photon beams propagating
the voids, taking into account the redshift dependence of the void size
indicated by the ... | [
{
"created": "Tue, 10 Aug 2021 07:52:37 GMT",
"version": "v1"
}
] | 2021-08-13 | [
[
"Samsonyan",
"M.",
""
],
[
"Kocharyan",
"A. A.",
""
],
[
"Stepanian",
"A.",
""
],
[
"Gurzadyan",
"V. G.",
""
]
] | The currently released datasets of the observational surveys reveal the redshift dependence of the physical features of cosmic voids. We study the void induced hyperbolicity, that is the deviation of the photon beams propagating the voids, taking into account the redshift dependence of the void size indicated by the ob... |
1607.08561 | Emmanuil Saridakis | V.K. Oikonomou (Tomsk Pedagogical Inst. & TUSUR, Tomsk), Emmanuel N.
Saridakis (Baylor U. & Valparaiso U., Catolica & Natl. Tech. U., Athens) | $f(T)$ gravitational baryogenesis | 6 pages, 1 figure, version published in Phys.Rev.D | Phys. Rev. D 94, 124005 (2016) | 10.1103/PhysRevD.94.124005 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate how baryogenesis can occur by the presence of an
$f(T)$-related gravitational term. We study various cases of $f(T)$ gravity and
we discuss in detail the effect of the novel terms on the baryon-to-entropy
ratio. Additionally, we study the constraints imposed by the observational
values of the baryon-to... | [
{
"created": "Thu, 28 Jul 2016 18:22:16 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Dec 2016 15:53:45 GMT",
"version": "v2"
}
] | 2016-12-07 | [
[
"Oikonomou",
"V. K.",
"",
"Tomsk Pedagogical Inst. & TUSUR, Tomsk"
],
[
"Saridakis",
"Emmanuel N.",
"",
"Baylor U. & Valparaiso U., Catolica & Natl. Tech. U., Athens"
]
] | We investigate how baryogenesis can occur by the presence of an $f(T)$-related gravitational term. We study various cases of $f(T)$ gravity and we discuss in detail the effect of the novel terms on the baryon-to-entropy ratio. Additionally, we study the constraints imposed by the observational values of the baryon-to-e... |
2305.16888 | Javlon Rayimbaev Javlon | M. Zubair, Muhammad Ali Raza, Furkat Sarikulov, Javlon Rayimbaev | $4D$ Einstein-Gauss-Bonnet Black Hole in Power-Yang-Mills Field: A
Shadow Study | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a static black hole immersed in the Power-Yang-Mills field in
four dimensional Einstein-Gauss-Bonnet gravity and investigate the effect of
various parameters on the radius of the photon sphere. The modified form of the
Newman-Janis algorithm is used for obtaining a rotating black hole solution in
this gra... | [
{
"created": "Fri, 26 May 2023 12:47:24 GMT",
"version": "v1"
}
] | 2023-05-29 | [
[
"Zubair",
"M.",
""
],
[
"Raza",
"Muhammad Ali",
""
],
[
"Sarikulov",
"Furkat",
""
],
[
"Rayimbaev",
"Javlon",
""
]
] | We consider a static black hole immersed in the Power-Yang-Mills field in four dimensional Einstein-Gauss-Bonnet gravity and investigate the effect of various parameters on the radius of the photon sphere. The modified form of the Newman-Janis algorithm is used for obtaining a rotating black hole solution in this gravi... |
1604.08056 | Anton Galajinsky | Anton Galajinsky and Kirill Orekhov | On the near horizon rotating black hole geometries with NUT charges | 12 pages | null | 10.1140/epjc/s10052-016-4333-0 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The near horizon geometries are usually constructed by implementing a
specific limit to a given extreme black hole configuration. Their salient
feature is that the isometry group includes the conformal subgroup SO(2,1). In
this work, we turn the logic around and use the conformal invariants for
constructing Ricci-fla... | [
{
"created": "Wed, 27 Apr 2016 13:19:12 GMT",
"version": "v1"
}
] | 2016-09-21 | [
[
"Galajinsky",
"Anton",
""
],
[
"Orekhov",
"Kirill",
""
]
] | The near horizon geometries are usually constructed by implementing a specific limit to a given extreme black hole configuration. Their salient feature is that the isometry group includes the conformal subgroup SO(2,1). In this work, we turn the logic around and use the conformal invariants for constructing Ricci-flat ... |
gr-qc/0112068 | T. Padmanabhan | T.Padmanabhan | Cosmic inventory of energy densities: issues and concerns | Based on the invited talk at the XIII Rencontres de Blois - Frontiers
of the Universe, June 17-23,2001 | null | null | IUCAA preprint 59/2001 | gr-qc astro-ph hep-th | null | The dynamics of our universe is characterised by the density parameters for
cosmological constant ($\Omega_V$), nonbaryonic darkmatter($\Omega_{\rm
wimp}$), radiation ($\Omega_R$) and baryons ($\Omega_B$). To these parameters
-- which describe the smooth background universe -- one needs to add at least
another dimens... | [
{
"created": "Wed, 26 Dec 2001 06:18:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Padmanabhan",
"T.",
""
]
] | The dynamics of our universe is characterised by the density parameters for cosmological constant ($\Omega_V$), nonbaryonic darkmatter($\Omega_{\rm wimp}$), radiation ($\Omega_R$) and baryons ($\Omega_B$). To these parameters -- which describe the smooth background universe -- one needs to add at least another dimensio... |
2005.00988 | Muxin Han | Muxin Han, Hongguang Liu | Semiclassical Limit of New Path Integral Formulation from Reduced Phase
Space Loop Quantum Gravity | 25+3 pages, no figure. ILQGS talk:
http://relativity.phys.lsu.edu/ilqgs/han041420.mp4. Mathematica files can be
downloaded from
https://github.com/LQG-Florida-Atlantic-University/Classical-EOM | Phys. Rev. D 102, 024083 (2020) | 10.1103/PhysRevD.102.024083 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, a new path integral formulation of Loop Quantum Gravity (LQG) has
been derived in arXiv:1910.03763 from the reduced phase space formulation of
the canonical LQG. This paper focuses on the semiclassical analysis of this
path integral formulation. We show that dominant contributions of the path
integral come ... | [
{
"created": "Sun, 3 May 2020 05:02:02 GMT",
"version": "v1"
}
] | 2020-08-05 | [
[
"Han",
"Muxin",
""
],
[
"Liu",
"Hongguang",
""
]
] | Recently, a new path integral formulation of Loop Quantum Gravity (LQG) has been derived in arXiv:1910.03763 from the reduced phase space formulation of the canonical LQG. This paper focuses on the semiclassical analysis of this path integral formulation. We show that dominant contributions of the path integral come fr... |
1503.00714 | Antonella Cid | Antonella Cid | On the consistency of tachyon warm inflation with viscous pressure | 12 pages | null | 10.1016/j.physletb.2015.02.025 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain conditions for the existence of an attractor in the system of
equations describing a tachyon warm inflationary model with bulk viscosity
taken into account. When these conditions are met the evolution approaches
slow-roll regime. We present the primordial power spectrum for the tachyon
field by considering ... | [
{
"created": "Fri, 27 Feb 2015 21:54:02 GMT",
"version": "v1"
}
] | 2018-04-10 | [
[
"Cid",
"Antonella",
""
]
] | We obtain conditions for the existence of an attractor in the system of equations describing a tachyon warm inflationary model with bulk viscosity taken into account. When these conditions are met the evolution approaches slow-roll regime. We present the primordial power spectrum for the tachyon field by considering a ... |
1103.5135 | Cosimo Bambi | Cosimo Bambi | Evolution of the spin parameter of accreting compact objects with
non-Kerr quadrupole moment | 20 pages, 16 figures. v2: published version with a few typos
corrected | JCAP 1105:009,2011 | 10.1088/1475-7516/2011/05/009 | IPMU11-0049 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There is robust observational evidence supporting the existence of $5 - 20$
$M_\odot$ compact bodies in X-ray binary systems and of $10^5 - 10^9$ $M_\odot$
bodies at the center of many galaxies. All these objects are commonly
interpreted as black holes, even is there is no direct evidence that they have
an event hori... | [
{
"created": "Sat, 26 Mar 2011 14:45:07 GMT",
"version": "v1"
},
{
"created": "Fri, 6 May 2011 13:17:30 GMT",
"version": "v2"
}
] | 2011-05-12 | [
[
"Bambi",
"Cosimo",
""
]
] | There is robust observational evidence supporting the existence of $5 - 20$ $M_\odot$ compact bodies in X-ray binary systems and of $10^5 - 10^9$ $M_\odot$ bodies at the center of many galaxies. All these objects are commonly interpreted as black holes, even is there is no direct evidence that they have an event horizo... |
2405.02051 | Olivier Minazzoli | Olivier Minazzoli | Cosmology in Entangled Relativity | 4 pages. Contribution to the 2024 Cosmology session of the 58th
Rencontres de Moriond.
(https://moriond.in2p3.fr/2024/Cosmology/transparencies/5_friday/2_afternoon/09_Minazzoli.pdf) | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | General Relativity, in the absence of a cosmological constant, is an
inevitable limit of Entangled Relativity, particularly when the universe is
dominated by dust and/or electromagnetic radiation. In this communication, I
emphasize that this arises from a specific type of decoupling termed
\textit{intrinsic decouplin... | [
{
"created": "Fri, 3 May 2024 12:30:33 GMT",
"version": "v1"
}
] | 2024-05-06 | [
[
"Minazzoli",
"Olivier",
""
]
] | General Relativity, in the absence of a cosmological constant, is an inevitable limit of Entangled Relativity, particularly when the universe is dominated by dust and/or electromagnetic radiation. In this communication, I emphasize that this arises from a specific type of decoupling termed \textit{intrinsic decoupling}... |
1603.07448 | Cosimo Bambi | Menglei Zhou, Alejandro Cardenas-Avendano, Cosimo Bambi, Burkhard
Kleihaus, Jutta Kunz | Search for astrophysical rotating Ellis wormholes with X-ray reflection
spectroscopy | 10 pages, 6 figures. v2: refereed version with simulated observations | Phys. Rev. D 94, 024036 (2016) | 10.1103/PhysRevD.94.024036 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, two of us have found numerically rotating Ellis wormholes as
solutions of 4-dimensional Einstein gravity coupled to a phantom field. In this
paper, we investigate possible observational signatures to identify similar
objects in the Universe. These symmetric wormholes have a mass and are compact,
so they may... | [
{
"created": "Thu, 24 Mar 2016 05:52:20 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jul 2016 19:15:15 GMT",
"version": "v2"
}
] | 2016-07-19 | [
[
"Zhou",
"Menglei",
""
],
[
"Cardenas-Avendano",
"Alejandro",
""
],
[
"Bambi",
"Cosimo",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | Recently, two of us have found numerically rotating Ellis wormholes as solutions of 4-dimensional Einstein gravity coupled to a phantom field. In this paper, we investigate possible observational signatures to identify similar objects in the Universe. These symmetric wormholes have a mass and are compact, so they may l... |
2311.06927 | Quentin Vigneron | Quentin Vigneron, \'Aron Szab\'o, Pierre Mourier | Topologically modified Einstein equation: a solution with singularities
on $\mathbb{S}^3$ | 23+6 pages, 6 figures, minor corrections | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In [arXiv:2204.13980], we recently proposed a modification of general
relativity in which a non-dynamical term related to topology is introduced in
the Einstein equation. The original motivation for this theory is to allow for
the non-relativistic limit to exist in any physical spacetime topology. In the
present pape... | [
{
"created": "Sun, 12 Nov 2023 18:56:58 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Nov 2023 10:10:23 GMT",
"version": "v2"
},
{
"created": "Mon, 22 Jan 2024 20:52:09 GMT",
"version": "v3"
}
] | 2024-01-24 | [
[
"Vigneron",
"Quentin",
""
],
[
"Szabó",
"Áron",
""
],
[
"Mourier",
"Pierre",
""
]
] | In [arXiv:2204.13980], we recently proposed a modification of general relativity in which a non-dynamical term related to topology is introduced in the Einstein equation. The original motivation for this theory is to allow for the non-relativistic limit to exist in any physical spacetime topology. In the present paper,... |
2207.03944 | Sabir Ramazanov Dr. | Eugeny Babichev, William T. Emond, Sabir Ramazanov | Shrouded black holes in Einstein-Gauss-Bonnet gravity | 25 pages, 5 figures; the speed of gravitational waves is shown to be
consistent with observations; references added | null | 10.1103/PhysRevD.106.063524 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study black holes in a modified gravity scenario involving a scalar field
quadratically coupled to the Gauss-Bonnet invariant. The scalar is assumed to
be in a spontaneously broken phase at spatial infinity due to a bare Higgs-like
potential. For a proper choice of sign, the non-minimal coupling to gravity
leads t... | [
{
"created": "Fri, 8 Jul 2022 14:53:33 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jul 2022 18:01:18 GMT",
"version": "v2"
}
] | 2022-10-05 | [
[
"Babichev",
"Eugeny",
""
],
[
"Emond",
"William T.",
""
],
[
"Ramazanov",
"Sabir",
""
]
] | We study black holes in a modified gravity scenario involving a scalar field quadratically coupled to the Gauss-Bonnet invariant. The scalar is assumed to be in a spontaneously broken phase at spatial infinity due to a bare Higgs-like potential. For a proper choice of sign, the non-minimal coupling to gravity leads to ... |
2203.02350 | Alexandre Deur | A. Deur | Effect of the field self-interaction of General Relativity on the Cosmic
Microwave Background Anisotropies | 7 pages, 3 figures. V2: slightly edited version to match the version
published in Class. Quantum Grav | Class. Quantum Grav. 39 135003 (2022) | 10.1088/1361-6382/ac7029 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Field self-interactions are at the origin of the non-linearities inherent to
General Relativity. We study their effects on the Cosmic Microwave Background
anisotropies. We find that they can reduce or alleviate the need for dark
matter and dark energy in the description of the Cosmic Microwave Background
power spectr... | [
{
"created": "Fri, 4 Mar 2022 14:39:27 GMT",
"version": "v1"
},
{
"created": "Mon, 23 May 2022 22:34:06 GMT",
"version": "v2"
}
] | 2022-06-02 | [
[
"Deur",
"A.",
""
]
] | Field self-interactions are at the origin of the non-linearities inherent to General Relativity. We study their effects on the Cosmic Microwave Background anisotropies. We find that they can reduce or alleviate the need for dark matter and dark energy in the description of the Cosmic Microwave Background power spectrum... |
gr-qc/0409114 | Tatyana P. Shestakova | T. P. Shestakova and C. Simeone | The problem of time and gauge invariance in the quantization of
cosmological models. I. Canonical quantization methods | 16 pages, to be published in Grav. Cosmol | Grav.Cosmol. 10 (2004) 161-176 | null | null | gr-qc | null | The paper is the first of two parts of a work reviewing some approaches to
the problem of time in quantum cosmology, which were put forward last decade,
and which demonstrated their relation to the problems of reparametrization and
gauge invariance of quantum gravity. In the present part we remind basic
features of q... | [
{
"created": "Wed, 29 Sep 2004 09:49:59 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Shestakova",
"T. P.",
""
],
[
"Simeone",
"C.",
""
]
] | The paper is the first of two parts of a work reviewing some approaches to the problem of time in quantum cosmology, which were put forward last decade, and which demonstrated their relation to the problems of reparametrization and gauge invariance of quantum gravity. In the present part we remind basic features of qua... |
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