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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1607.05473 | Donato Bini | Donato Bini and Bahram Mashhoon | Relativistic Gravity Gradiometry: The Mashhoon--Theiss Effect | 23 pages; revtex macros used; two figures; v2: references added,
presentation improved; v3: subsection V(B) added, other additions and
improvements | Phys. Rev. D 94, 124009 (2016) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general relativity, relativistic gravity gradiometry involves the
measurement of the relativistic tidal matrix, which is theoretically obtained
from the projection of the Riemann curvature tensor onto the orthonormal tetrad
frame of an observer. The observer's 4-velocity vector defines its local
temporal axis and ... | [
{
"created": "Tue, 19 Jul 2016 09:10:21 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Aug 2016 09:07:45 GMT",
"version": "v2"
},
{
"created": "Tue, 6 Dec 2016 08:26:50 GMT",
"version": "v3"
}
] | 2016-12-07 | [
[
"Bini",
"Donato",
""
],
[
"Mashhoon",
"Bahram",
""
]
] | In general relativity, relativistic gravity gradiometry involves the measurement of the relativistic tidal matrix, which is theoretically obtained from the projection of the Riemann curvature tensor onto the orthonormal tetrad frame of an observer. The observer's 4-velocity vector defines its local temporal axis and it... |
1512.05866 | Josef Kluson | M. Chaichian, A. Ghalee, J. Kluson | Restricted f(R) Gravity and Its Cosmological Implications | 22 pages, v2:minor corrections, figure added, v3:version published in
PRD | Phys. Rev. D 93, 104020 (2016) | 10.1103/PhysRevD.93.104020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the f(R) theory of gravity with broken diffeomorphism due to
the change of the coefficient in front of the total divergence term in the
(3+1)-decomposition of the scalar curvature. We perform the canonical analysis
of this theory and show that its consistent, i.e. with no unphysical degrees of
freedom,... | [
{
"created": "Fri, 18 Dec 2015 07:31:51 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Feb 2016 07:42:11 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Apr 2016 06:40:00 GMT",
"version": "v3"
}
] | 2016-05-18 | [
[
"Chaichian",
"M.",
""
],
[
"Ghalee",
"A.",
""
],
[
"Kluson",
"J.",
""
]
] | We investigate the f(R) theory of gravity with broken diffeomorphism due to the change of the coefficient in front of the total divergence term in the (3+1)-decomposition of the scalar curvature. We perform the canonical analysis of this theory and show that its consistent, i.e. with no unphysical degrees of freedom, f... |
2404.01083 | Alejandro C\'ardenas-Avenda\~no | Alejandro C\'ardenas-Avenda\~no, Lennox Keeble, Alexandru Lupsasca | Assessing the impact of instrument noise and astrophysical fluctuations
on measurements of the first black hole photon ring | 20+1 pages, 13 figures. V2: Minor changes to match the published
version | Phys. Rev. D 109, 124052, 2024 | 10.1103/PhysRevD.109.124052 | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | Currently envisioned extensions of the Event Horizon Telescope to space will
soon target the black hole photon ring: a narrow ring-shaped imprint of a black
hole's strong gravity produced in its images by highly bent photon
trajectories. In principle, the shape of the photon ring encodes information
about the geometr... | [
{
"created": "Mon, 1 Apr 2024 12:26:03 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Jun 2024 12:37:49 GMT",
"version": "v2"
}
] | 2024-06-24 | [
[
"Cárdenas-Avendaño",
"Alejandro",
""
],
[
"Keeble",
"Lennox",
""
],
[
"Lupsasca",
"Alexandru",
""
]
] | Currently envisioned extensions of the Event Horizon Telescope to space will soon target the black hole photon ring: a narrow ring-shaped imprint of a black hole's strong gravity produced in its images by highly bent photon trajectories. In principle, the shape of the photon ring encodes information about the geometry ... |
gr-qc/9807055 | Andrew Philip Billyard | Andrew Billyard, Alan A Coley, Jesus Ibanez | On the Asymptotic Behaviour of Cosmological Models in Scalar-Tensor
Theories of Gravity | 22 pages, submitted to Phys Rev D | Phys.Rev. D59 (1999) 023507 | 10.1103/PhysRevD.59.023507 | Dal-98-07 | gr-qc | null | We study the qualitative properties of cosmological models in scalar-tensor
theories of gravity by exploiting the formal equivalence of these theories with
general relativity minimally coupled to a scalar field under a conformal
transformation and field redefinition. In particular, we investigate the
asymptotic behav... | [
{
"created": "Mon, 20 Jul 1998 17:28:43 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Billyard",
"Andrew",
""
],
[
"Coley",
"Alan A",
""
],
[
"Ibanez",
"Jesus",
""
]
] | We study the qualitative properties of cosmological models in scalar-tensor theories of gravity by exploiting the formal equivalence of these theories with general relativity minimally coupled to a scalar field under a conformal transformation and field redefinition. In particular, we investigate the asymptotic behavio... |
gr-qc/0108075 | Yosef Zlochower | Sascha Husa, Yosef Zlochower, Roberto Gomez, Jeffrey Winicour | Retarded radiation from colliding black holes in the close limit | 14 pages, 13 figures, revtex4 | Phys.Rev. D65 (2002) 084034 | 10.1103/PhysRevD.65.084034 | null | gr-qc | null | We use null hypersurface techniques in a new approach to calculate the
retarded waveform from a binary black hole merger in the close approximation.
The process of removing ingoing radiation from the system leads to two notable
features in the shape of the close approximation waveform for a head-on
collision of black... | [
{
"created": "Wed, 29 Aug 2001 20:49:00 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Husa",
"Sascha",
""
],
[
"Zlochower",
"Yosef",
""
],
[
"Gomez",
"Roberto",
""
],
[
"Winicour",
"Jeffrey",
""
]
] | We use null hypersurface techniques in a new approach to calculate the retarded waveform from a binary black hole merger in the close approximation. The process of removing ingoing radiation from the system leads to two notable features in the shape of the close approximation waveform for a head-on collision of black h... |
1512.05865 | Daiske Yoshida | Daiske Yoshida, Jiro Soda | Quasi-Normal Modes of Black Holes in Lovelock Gravity | 20 pages, 27 figures | Phys. Rev. D 93, 044024 (2016) | 10.1103/PhysRevD.93.044024 | KOBE-TH-15-14 | gr-qc astro-ph.IM hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study quasinormal modes of black holes in Lovelock gravity. We formulate
the WKB method adapted to Lovelock gravity for the calculation of quasinormal
frequencies (QNFs). As a demonstration, we calculate various QNFs of Lovelock
black holes in seven and eight dimensions. We find that the QNFs show
remarkable featu... | [
{
"created": "Fri, 18 Dec 2015 07:30:45 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Feb 2016 17:37:32 GMT",
"version": "v2"
}
] | 2016-02-10 | [
[
"Yoshida",
"Daiske",
""
],
[
"Soda",
"Jiro",
""
]
] | We study quasinormal modes of black holes in Lovelock gravity. We formulate the WKB method adapted to Lovelock gravity for the calculation of quasinormal frequencies (QNFs). As a demonstration, we calculate various QNFs of Lovelock black holes in seven and eight dimensions. We find that the QNFs show remarkable feature... |
2209.01928 | Jo\~ao Lu\'is Rosa | D. Bazeia, A. S. Lob\~ao Jr., Jo\~ao Lu\'is Rosa | Multi-kink braneworld configurations in the scalar-tensor representation
of $f(R,T)$ gravity | 10 pages, 12 figures | European Physical Journal Plus 137:999 (2022) | 10.1140/epjp/s13360-022-03178-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we investigate the $f(R,T)$ brane in the scalar-tensor
representation, where the solutions of the equations of motions for the source
field engender topological defects with two-kink profiles. We use the
first-order formalism to obtain analytical solutions for the source field of
the brane and analyze ho... | [
{
"created": "Mon, 5 Sep 2022 12:13:31 GMT",
"version": "v1"
}
] | 2022-09-08 | [
[
"Bazeia",
"D.",
""
],
[
"Lobão",
"A. S.",
"Jr."
],
[
"Rosa",
"João Luís",
""
]
] | In this work we investigate the $f(R,T)$ brane in the scalar-tensor representation, where the solutions of the equations of motions for the source field engender topological defects with two-kink profiles. We use the first-order formalism to obtain analytical solutions for the source field of the brane and analyze how ... |
gr-qc/0403095 | Alexander E. Shalyt-Margolin | Alex E. Shalyt-Margolin | The Density Matrix Deformation in Physics of the Early Universe and Some
of its Implications | 53 pages, Latex. To appear in "Progress in General Relativity and
Quantum Cosmology Research" | "Quantum Cosmology Research Trends. Horizons in World Physics,
Volume 246,p.p.49--91" (Nova Science Publishers, Inc., Hauppauge, NY,2005)} | null | null | gr-qc | null | In this paper a new approach to investigation of Quantum and Statistical
Mechanics of the Early Universe (Planck scale) - density matrix deformation -
is proposed. The deformation is understood as an extension of a particular
theory by inclusion of one or several additional parameters in such a way that
the initial t... | [
{
"created": "Tue, 23 Mar 2004 15:50:41 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Nov 2005 10:11:45 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Shalyt-Margolin",
"Alex E.",
""
]
] | In this paper a new approach to investigation of Quantum and Statistical Mechanics of the Early Universe (Planck scale) - density matrix deformation - is proposed. The deformation is understood as an extension of a particular theory by inclusion of one or several additional parameters in such a way that the initial the... |
gr-qc/0407034 | Tomohiro Harada | Tomohiro Harada, Ken-ichi Nakao | Border of Spacetime | 4 pages, 1 figure, accepted for publication in Physical Review D,
typos corrected | Phys.Rev. D70 (2004) 041501 | 10.1103/PhysRevD.70.041501 | null | gr-qc hep-th | null | It is still uncertain whether the cosmic censorship conjecture is true or
not. To get a new insight into this issue, we propose the concept of the border
of spacetime as a generalization of the spacetime singularity and discuss its
visibility. The visible border, corresponding to the naked singularity, is not
only re... | [
{
"created": "Thu, 8 Jul 2004 09:04:37 GMT",
"version": "v1"
},
{
"created": "Sun, 8 Aug 2004 02:11:19 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Harada",
"Tomohiro",
""
],
[
"Nakao",
"Ken-ichi",
""
]
] | It is still uncertain whether the cosmic censorship conjecture is true or not. To get a new insight into this issue, we propose the concept of the border of spacetime as a generalization of the spacetime singularity and discuss its visibility. The visible border, corresponding to the naked singularity, is not only rele... |
1511.08048 | P. A. Gonzalez | P. A. Gonzalez, Marco Olivares and Yerko Vasquez | Bounded orbits for photons as a consequence of extra dimensions | Improved version; References added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we study the geodesic structure for a geometry described by a
spherically symmetric four-dimensional solution embedded in a five-dimensional
space known as a brane-based spherically symmetric solution. Mainly, we have
found that the extra dimension contributes to the existence of bounded orbits
for the ... | [
{
"created": "Wed, 25 Nov 2015 13:06:39 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Apr 2017 16:17:34 GMT",
"version": "v2"
}
] | 2017-04-04 | [
[
"Gonzalez",
"P. A.",
""
],
[
"Olivares",
"Marco",
""
],
[
"Vasquez",
"Yerko",
""
]
] | In this work, we study the geodesic structure for a geometry described by a spherically symmetric four-dimensional solution embedded in a five-dimensional space known as a brane-based spherically symmetric solution. Mainly, we have found that the extra dimension contributes to the existence of bounded orbits for the ph... |
1611.04343 | Nematollah Riazi | S.N. Sajadi, N. Riazi | Gravitational Lensing by Polytropic Wormholes | 19 pages,11 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain static multi-polytropic wormhole solutions in the framework of GR
gravity. The resulting metric is asymptotically Minkowskian, and locally that
of a wormhole. We also examine gravitational lensing by the wormhole, and
calculate the deflection angle for weak and strong field limits. We investigate
microlensi... | [
{
"created": "Mon, 14 Nov 2016 11:26:54 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Jan 2018 11:30:20 GMT",
"version": "v2"
}
] | 2018-01-16 | [
[
"Sajadi",
"S. N.",
""
],
[
"Riazi",
"N.",
""
]
] | We obtain static multi-polytropic wormhole solutions in the framework of GR gravity. The resulting metric is asymptotically Minkowskian, and locally that of a wormhole. We also examine gravitational lensing by the wormhole, and calculate the deflection angle for weak and strong field limits. We investigate microlensing... |
0804.0541 | Marco Pizzi | A. Paolino, M. Pizzi | Electric force lines of the double Reissner-Nordstrom exact solution | 19 pages, 7 figures, accepted by IJMPD | Int.J.Mod.Phys.D17:1159-1177,2008 | 10.1142/S0218271808012577 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Alekseev and Belinski have presented a new exact solution of the
Einstein-Maxwell equations which describes two Reissner-Nordstrom (RN) sources
in reciprocal equilibrium (no struts nor strings); one source is a naked
singularity, the other is a black hole: this is the only possible configuration
for separab... | [
{
"created": "Thu, 3 Apr 2008 12:42:16 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Apr 2008 13:13:32 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Paolino",
"A.",
""
],
[
"Pizzi",
"M.",
""
]
] | Recently, Alekseev and Belinski have presented a new exact solution of the Einstein-Maxwell equations which describes two Reissner-Nordstrom (RN) sources in reciprocal equilibrium (no struts nor strings); one source is a naked singularity, the other is a black hole: this is the only possible configuration for separable... |
0709.3152 | Brien C. Nolan | Brien C. Nolan, Ujjal Debnath | Is the shell-focusing singularity of Szekeres space-time visible? | 10 pages | Phys.Rev.D76:104046,2007 | 10.1103/PhysRevD.76.104046 | null | gr-qc | null | The visibility of the shell-focusing singularity in Szekeres space-time -
which represents quasi-spherical dust collapse - has been studied on numerous
occasions in the context of the cosmic censorship conjecture. The various
results derived have assumed that there exist radial null geodesics in the
space-time. We sh... | [
{
"created": "Thu, 20 Sep 2007 08:18:42 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Nolan",
"Brien C.",
""
],
[
"Debnath",
"Ujjal",
""
]
] | The visibility of the shell-focusing singularity in Szekeres space-time - which represents quasi-spherical dust collapse - has been studied on numerous occasions in the context of the cosmic censorship conjecture. The various results derived have assumed that there exist radial null geodesics in the space-time. We show... |
1612.08419 | Jeffrey Groah Ph.D. | Jeffrey M Groah | $C^{1,1}$ Pseudohermitian, Torsion-free Manifolds | 5 pages. arXiv admin note: text overlap with arXiv:1510.08078 | null | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Riemannian Manifolds may be $C^{1,1}$ and the geometry of these manifolds is
investigated in \cite{Groah1}. Here, a similar analysis is given for
pseudohermitian, torsion-free manifolds whereby, instead of assuming that the
metric is parallel, it is assumed that the metric is pseudohermitian, a
condition adopted by E... | [
{
"created": "Mon, 26 Dec 2016 18:17:24 GMT",
"version": "v1"
}
] | 2016-12-28 | [
[
"Groah",
"Jeffrey M",
""
]
] | Riemannian Manifolds may be $C^{1,1}$ and the geometry of these manifolds is investigated in \cite{Groah1}. Here, a similar analysis is given for pseudohermitian, torsion-free manifolds whereby, instead of assuming that the metric is parallel, it is assumed that the metric is pseudohermitian, a condition adopted by Ein... |
gr-qc/9412002 | Maria Bento | M. C. Bento and O. Bertolami | Scale Factor Duality: A Quantum Cosmological Approach | 10 pages, plain tex, uses panda.tex (appended) | Class.Quant.Grav.12:1919-1926,1995 | 10.1088/0264-9381/12/8/009 | CERN-TH.7488/94, DFTT 43/94 | gr-qc | null | We consider the minisuperspace model arising from the lowest order string
effective action containing the graviton and the dilaton and study solutions of
the resulting Wheeler-Dewitt equation. The scale factor duality symmetry is
discussed in the context of our quantum cosmological model.
| [
{
"created": "Thu, 1 Dec 1994 16:59:02 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Bento",
"M. C.",
""
],
[
"Bertolami",
"O.",
""
]
] | We consider the minisuperspace model arising from the lowest order string effective action containing the graviton and the dilaton and study solutions of the resulting Wheeler-Dewitt equation. The scale factor duality symmetry is discussed in the context of our quantum cosmological model. |
2009.07681 | Ming Zhang | Ming Zhang and Jie Jiang | New gedanken experiment on higher-dimensional asymptotically AdS
Reissner-Nordstr\"om black hole | 7 pages, EPJC accepted | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Viewing the negative cosmological constant as a dynamical quantity derived
from the matter field, we study the weak cosmic censorship conjecture for the
higher-dimensional asymptotically AdS Reissner-Nordstr\"om black hole. To this
end, using stability assumption of matter field perturbation and null energy
condition... | [
{
"created": "Wed, 16 Sep 2020 13:40:19 GMT",
"version": "v1"
}
] | 2020-09-17 | [
[
"Zhang",
"Ming",
""
],
[
"Jiang",
"Jie",
""
]
] | Viewing the negative cosmological constant as a dynamical quantity derived from the matter field, we study the weak cosmic censorship conjecture for the higher-dimensional asymptotically AdS Reissner-Nordstr\"om black hole. To this end, using stability assumption of matter field perturbation and null energy condition o... |
2209.00874 | Carlos Albertho Benavides-Gallego | Carlos A. Benavides-Gallego and Wen-Biao Han | Gravitational waves and electromagnetic radiation from charged black
hole binaries | 24 pages, 7 figures | Symmetry 2023, 15(2), 537; | 10.3390/sym15020537 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | It is still an open issue if astrophysical black holes have electric charges
or not. In this work, we analytically calculate gravitational and
electromagnetic waveforms in the frequency domain for charged black hole
binaries during the inspiral phase. In addition to the well-known $f^{-7/6}$
waveforms, we also get a ... | [
{
"created": "Fri, 2 Sep 2022 08:23:01 GMT",
"version": "v1"
}
] | 2023-02-21 | [
[
"Benavides-Gallego",
"Carlos A.",
""
],
[
"Han",
"Wen-Biao",
""
]
] | It is still an open issue if astrophysical black holes have electric charges or not. In this work, we analytically calculate gravitational and electromagnetic waveforms in the frequency domain for charged black hole binaries during the inspiral phase. In addition to the well-known $f^{-7/6}$ waveforms, we also get a $-... |
1405.0638 | Stanley P. Gudder | Stan Gudder | The Universe as a Quantum Computer | 23 pages, 1 figure | Axioms 2015; 4(1): 102-119 | 10.3390/axioms4010102 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article presents a sequential growth model for the universe that acts
like a quantum computer. The basic constituents of the model are a special type
of causal set (causet) called a $c$-causet. A $c$-causet is defined to be a
causet that is independent of its labeling. We characterize $c$-causets as
those causet... | [
{
"created": "Sun, 4 May 2014 01:04:24 GMT",
"version": "v1"
}
] | 2022-09-01 | [
[
"Gudder",
"Stan",
""
]
] | This article presents a sequential growth model for the universe that acts like a quantum computer. The basic constituents of the model are a special type of causal set (causet) called a $c$-causet. A $c$-causet is defined to be a causet that is independent of its labeling. We characterize $c$-causets as those causets ... |
2004.02858 | Wen-Yuan Ai | Wen-Yuan Ai | A note on the novel 4D Einstein-Gauss-Bonnet gravity | 9 pages, revtex format; v2: references added; v3: minor typos
corrected, an appendix added, to match the published version | Commun. Theor. Phys. 72 (2020) 095402 | 10.1088/1572-9494/aba242 | CP3-20-16 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, a novel 4D Einstein-Gauss-Bonnet gravity has been proposed by
Glavan and Lin [Phys. Rev. Lett. 124, 081301 (2020)] by rescaling the coupling
$\alpha \rightarrow \alpha/(D-4)$ and taking the limit $D\rightarrow 4$ at the
level of equations of motion. This prescription, though was shown to bring
non-trivial e... | [
{
"created": "Mon, 6 Apr 2020 17:49:24 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Apr 2020 16:06:51 GMT",
"version": "v2"
},
{
"created": "Wed, 5 Aug 2020 15:25:40 GMT",
"version": "v3"
}
] | 2020-08-06 | [
[
"Ai",
"Wen-Yuan",
""
]
] | Recently, a novel 4D Einstein-Gauss-Bonnet gravity has been proposed by Glavan and Lin [Phys. Rev. Lett. 124, 081301 (2020)] by rescaling the coupling $\alpha \rightarrow \alpha/(D-4)$ and taking the limit $D\rightarrow 4$ at the level of equations of motion. This prescription, though was shown to bring non-trivial eff... |
1807.00768 | Bob Osano | Bob Osano and Timothy Oreta | Multi-fluid Theory and Cosmology: A Convective Variational Approach to
Interacting Dark-Sector | 10 pages. This article builds on the foundational work presented by
the authors of arXiv:gr-qc/0605010 | null | 10.1142/S0218271819500780 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article examines the foundation of the recently developed relativistic
variational formalism[1]. Our work is heavily based on [2, 27] which extends
this approach to the multi-fluid theory and examines its utility in
astrophysics and cosmology. Unlike the extension to the formalism mentioned
above, that looks at ... | [
{
"created": "Mon, 2 Jul 2018 16:06:18 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Jul 2018 20:44:58 GMT",
"version": "v2"
}
] | 2019-05-22 | [
[
"Osano",
"Bob",
""
],
[
"Oreta",
"Timothy",
""
]
] | This article examines the foundation of the recently developed relativistic variational formalism[1]. Our work is heavily based on [2, 27] which extends this approach to the multi-fluid theory and examines its utility in astrophysics and cosmology. Unlike the extension to the formalism mentioned above, that looks at th... |
gr-qc/9808019 | Jerzy Matyjasek | Jerzy Matyjasek | $<T^{\mu}_{\nu}>_{ren}$ of the quantized fields in the Unruh state in
the Schwarzschild spacetime | 17 pages, REVTEX | Phys. Rev. D 59, 044002 (1999) | 10.1103/PhysRevD.59.044002 | UMCS-FM-98-16 | gr-qc | null | The renormalized expectation value of the stress energy tensor of the
conformally invariant massless fields in the Unruh state in the Schwarzschild
spacetime is constructed. It is achieved through solving the conservation
equation in conformal space and utilizing the regularity conditions in the
physical metric. The ... | [
{
"created": "Thu, 6 Aug 1998 17:14:28 GMT",
"version": "v1"
}
] | 2016-08-25 | [
[
"Matyjasek",
"Jerzy",
""
]
] | The renormalized expectation value of the stress energy tensor of the conformally invariant massless fields in the Unruh state in the Schwarzschild spacetime is constructed. It is achieved through solving the conservation equation in conformal space and utilizing the regularity conditions in the physical metric. The re... |
2101.06347 | Celia Escamilla-Rivera | Geovanny A. Rave-Franco, Celia Escamilla-Rivera and Jackson Levi Said | Dynamical complexity of the Teleparallel gravity cosmology | 19 pages, 4 figures | Phys. Rev. D 103, 084017 (2021) | 10.1103/PhysRevD.103.084017 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The exploration of teleparallel gravity has been done from a dynamical
systems point of view in order to be tested against the cosmological evolution
currently observed. So far, the proposed autonomous systems have been
restrictive over a constant dynamical variable, which contains information
related to the dynamics... | [
{
"created": "Sat, 16 Jan 2021 01:56:33 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Apr 2021 23:24:00 GMT",
"version": "v2"
}
] | 2021-04-15 | [
[
"Rave-Franco",
"Geovanny A.",
""
],
[
"Escamilla-Rivera",
"Celia",
""
],
[
"Said",
"Jackson Levi",
""
]
] | The exploration of teleparallel gravity has been done from a dynamical systems point of view in order to be tested against the cosmological evolution currently observed. So far, the proposed autonomous systems have been restrictive over a constant dynamical variable, which contains information related to the dynamics o... |
gr-qc/9602038 | Takahiro Tanaka | Takahiro Tanaka, Yasushi Mino, Misao Sasaki and Masaru Shibata | Gravitational waves from a spinning particle in circular orbits around a
rotating black hole | 20 pages, LaTeX, 2 figures available upon request | Phys.Rev.D54:3762-3777,1996 | 10.1103/PhysRevD.54.3762 | OU-TAP-27 | gr-qc | null | Using the Teukolsky and Sasaki-Nakamura formalisms for the perterbations
around a Kerr black hole, we calculate the energy flux of gravitational waves
induced by a {\it spinning} particle of mass $\mu$ and spin $S$ moving in
circular orbits near the equatorial plain of a rotating black hole of mass $M
(\gg \mu)$ and ... | [
{
"created": "Mon, 19 Feb 1996 12:13:46 GMT",
"version": "v1"
}
] | 2009-10-09 | [
[
"Tanaka",
"Takahiro",
""
],
[
"Mino",
"Yasushi",
""
],
[
"Sasaki",
"Misao",
""
],
[
"Shibata",
"Masaru",
""
]
] | Using the Teukolsky and Sasaki-Nakamura formalisms for the perterbations around a Kerr black hole, we calculate the energy flux of gravitational waves induced by a {\it spinning} particle of mass $\mu$ and spin $S$ moving in circular orbits near the equatorial plain of a rotating black hole of mass $M (\gg \mu)$ and sp... |
1811.00065 | Tousif Islam | Tousif Islam | Globular clusters as a probe for Weyl Conformal Gravity | 11 pages, 8 figures, Accepted for publication in MNRAS, to appear in
the given DOI | null | 10.1093/mnras/stz2090 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Eventual flattening of velocity dispersion profiles of some galactic globular
clusters in the Milky Way cannot be explained in the framework of Newtonian
gravity and hence in general theory of relativity in the weak field limit,
without resorting to the occurrence of tidal effects. We explore the
possibility of expla... | [
{
"created": "Wed, 31 Oct 2018 18:58:21 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Jul 2019 20:28:03 GMT",
"version": "v2"
}
] | 2019-07-31 | [
[
"Islam",
"Tousif",
""
]
] | Eventual flattening of velocity dispersion profiles of some galactic globular clusters in the Milky Way cannot be explained in the framework of Newtonian gravity and hence in general theory of relativity in the weak field limit, without resorting to the occurrence of tidal effects. We explore the possibility of explain... |
gr-qc/0302083 | Carlos Palenzuela | C. Bona, T. Ledvinka, C. Palenzuela and M. Zacek | General-covariant evolution formalism for Numerical Relativity | null | Phys.Rev.D67:104005,2003 | 10.1103/PhysRevD.67.104005 | null | gr-qc | null | A general covariant extension of Einstein\'{}s field equations is considered
with a view to Numerical Relativity applications. The basic variables are taken
to be the metric tensor and an additional four-vector $Z_\mu$. Einstein's
solutions are recovered when the additional four-vector vanishes, so that the
energy an... | [
{
"created": "Thu, 20 Feb 2003 09:33:45 GMT",
"version": "v1"
}
] | 2011-04-21 | [
[
"Bona",
"C.",
""
],
[
"Ledvinka",
"T.",
""
],
[
"Palenzuela",
"C.",
""
],
[
"Zacek",
"M.",
""
]
] | A general covariant extension of Einstein\'{}s field equations is considered with a view to Numerical Relativity applications. The basic variables are taken to be the metric tensor and an additional four-vector $Z_\mu$. Einstein's solutions are recovered when the additional four-vector vanishes, so that the energy and ... |
1310.5853 | Roberto Casadio | Roberto Casadio, Jorge Ovalle, Roldao da Rocha | Black Strings from Minimal Geometric Deformation in a Variable Tension
Brane-World | 20 pages, 6 figures | Class.Quant.Grav. 31 (2014) 045016 | 10.1088/0264-9381/31/4/045016 | null | gr-qc astro-ph.CO astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study brane-world models with variable brane tension and compute
corrections to the horizon of a black string along the extra dimension. The
four-dimensional geometry of the black string on the brane is obtained by means
of the minimal geometric deformation approach, and the bulk corrections are
then encoded in ad... | [
{
"created": "Tue, 22 Oct 2013 09:30:10 GMT",
"version": "v1"
}
] | 2015-01-21 | [
[
"Casadio",
"Roberto",
""
],
[
"Ovalle",
"Jorge",
""
],
[
"da Rocha",
"Roldao",
""
]
] | We study brane-world models with variable brane tension and compute corrections to the horizon of a black string along the extra dimension. The four-dimensional geometry of the black string on the brane is obtained by means of the minimal geometric deformation approach, and the bulk corrections are then encoded in addi... |
1609.02219 | Nelson Yokomizo | Eugenio Bianchi, Jonathan Guglielmon, Lucas Hackl, Nelson Yokomizo | Loop expansion and the bosonic representation of loop quantum gravity | 33 pages, 2 figures | Phys. Rev. D 94, 086009 (2016) | 10.1103/PhysRevD.94.086009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a new loop expansion that provides a resolution of the identity
in the Hilbert space of loop quantum gravity on a fixed graph. We work in the
bosonic representation obtained by the canonical quantization of the spinorial
formalism. The resolution of the identity gives a tool for implementing the
projecti... | [
{
"created": "Wed, 7 Sep 2016 23:29:56 GMT",
"version": "v1"
}
] | 2016-11-02 | [
[
"Bianchi",
"Eugenio",
""
],
[
"Guglielmon",
"Jonathan",
""
],
[
"Hackl",
"Lucas",
""
],
[
"Yokomizo",
"Nelson",
""
]
] | We introduce a new loop expansion that provides a resolution of the identity in the Hilbert space of loop quantum gravity on a fixed graph. We work in the bosonic representation obtained by the canonical quantization of the spinorial formalism. The resolution of the identity gives a tool for implementing the projection... |
2306.03880 | Andronikos Paliathanasis | Andronikos Paliathanasis | Dynamical analysis in Chameleon dark energy | 34 pages, 13 figures, to appear in Fortschritte der Physik (Progress
of Physics) | null | null | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We present a detailed analysis of the phase-space for the field equations in
scalar field cosmology with a chameleon cosmology in a spatially flat
Friedmann--Lema\^{\i}tre--Robertson--Walker spacetime. For the matter source we
assume that it is an ideal gas with a constant equation of state parameter,
while for the s... | [
{
"created": "Tue, 6 Jun 2023 17:31:04 GMT",
"version": "v1"
}
] | 2023-06-07 | [
[
"Paliathanasis",
"Andronikos",
""
]
] | We present a detailed analysis of the phase-space for the field equations in scalar field cosmology with a chameleon cosmology in a spatially flat Friedmann--Lema\^{\i}tre--Robertson--Walker spacetime. For the matter source we assume that it is an ideal gas with a constant equation of state parameter, while for the sca... |
2405.19181 | Gustav Mogull | Alessandra Buonanno, Gustav Mogull, Raj Patil, Lorenzo Pompili | Post-Minkowskian Theory Meets the Spinning Effective-One-Body Approach
for Bound-Orbit Waveforms | 5 pages, 4 figures; supplemental material; attached ancillary
Mathematica file | null | null | HU-EP-24/16-RTG | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Driven by advances in scattering amplitudes and worldline-based methods,
recent years have seen significant progress in our ability to calculate
gravitational two-body scattering observables. These observables effectively
encapsulate the gravitational two-body problem in the weak-field and
high-velocity regime (post-... | [
{
"created": "Wed, 29 May 2024 15:21:51 GMT",
"version": "v1"
}
] | 2024-05-30 | [
[
"Buonanno",
"Alessandra",
""
],
[
"Mogull",
"Gustav",
""
],
[
"Patil",
"Raj",
""
],
[
"Pompili",
"Lorenzo",
""
]
] | Driven by advances in scattering amplitudes and worldline-based methods, recent years have seen significant progress in our ability to calculate gravitational two-body scattering observables. These observables effectively encapsulate the gravitational two-body problem in the weak-field and high-velocity regime (post-Mi... |
1003.1309 | Mark D. Roberts | Mark D. Roberts | String theory explanation of galactic rotation | Note change in title from: Scalar-tensor explanation of galactic
rotation, to: String theory explanation of galactic rotation, was three and a
half pages, now is seven pages long | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The unique spherically symmetric metric which has vanishing weyl tensor, is
asymptotically desitter, and can model constant galactic rotation curves is
presented. Two types of field equations are shown to have this metric as an
exact solution. The first is palatini varied scalar-tensor theory. The second
is the low e... | [
{
"created": "Fri, 5 Mar 2010 16:55:59 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Apr 2010 15:56:18 GMT",
"version": "v2"
}
] | 2010-04-14 | [
[
"Roberts",
"Mark D.",
""
]
] | The unique spherically symmetric metric which has vanishing weyl tensor, is asymptotically desitter, and can model constant galactic rotation curves is presented. Two types of field equations are shown to have this metric as an exact solution. The first is palatini varied scalar-tensor theory. The second is the low ene... |
2312.02507 | Yong Tang | Wen-Hao Wu, Yong Tang | Post-Newtonian Binary Dynamics in Effective Field Theory of Horndeski
Gravity | 1+22 pages, 9 figures | Chinese Physics C 48, 035101(2024) | 10.1088/1674-1137/ad1a0c | null | gr-qc astro-ph.CO hep-ph | http://creativecommons.org/licenses/by/4.0/ | General relativity has been very successful since its proposal more a century
ago. However, various cosmological observations and theoretical consistency
still motivate us to explore extended gravity theories. Horndeski gravity
stands out as one attractive theory by introducing only one scalar field. Here
we formulat... | [
{
"created": "Tue, 5 Dec 2023 05:23:00 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Feb 2024 08:39:59 GMT",
"version": "v2"
}
] | 2024-02-27 | [
[
"Wu",
"Wen-Hao",
""
],
[
"Tang",
"Yong",
""
]
] | General relativity has been very successful since its proposal more a century ago. However, various cosmological observations and theoretical consistency still motivate us to explore extended gravity theories. Horndeski gravity stands out as one attractive theory by introducing only one scalar field. Here we formulate ... |
0810.1680 | Dan Giang | Dan Giang, Charles C. Dyer | Velocity dominated singularities in the cheese slice universe | 11 pages, 3 figures, accepted for publication in the International
Journal of Modern Physics D | Int.J.Mod.Phys.D18:13-23,2009 | 10.1142/S0218271809014248 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the properties of spacetimes resulting from matching together
exact solutions using the Darmois matching conditions. In particular we focus
on the asymptotically velocity term dominated property (AVTD). We propose a
criterion that can be used to test if a spacetime constructed from a matching
can be co... | [
{
"created": "Thu, 9 Oct 2008 15:55:04 GMT",
"version": "v1"
}
] | 2009-03-24 | [
[
"Giang",
"Dan",
""
],
[
"Dyer",
"Charles C.",
""
]
] | We investigate the properties of spacetimes resulting from matching together exact solutions using the Darmois matching conditions. In particular we focus on the asymptotically velocity term dominated property (AVTD). We propose a criterion that can be used to test if a spacetime constructed from a matching can be cons... |
2307.03155 | Tousif Islam | Tousif Islam and Gaurav Khanna | On the approximate relation between black-hole perturbation theory and
numerical relativity | 14 pages, 11 figures, Phys. Rev. D 108, 124046 | null | 10.1103/PhysRevD.108.124046 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the interplay between numerical relativity (NR) and adiabatic
point-particle black hole perturbation theory (ppBHPT) in the comparable mass
regime for quasi-circular non-spinning binary black holes. Specifically, we
reassess the $\alpha$-$\beta$ scaling technique, previously introduced by Islam
et al, ... | [
{
"created": "Thu, 6 Jul 2023 17:30:43 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Feb 2024 23:33:30 GMT",
"version": "v2"
}
] | 2024-02-06 | [
[
"Islam",
"Tousif",
""
],
[
"Khanna",
"Gaurav",
""
]
] | We investigate the interplay between numerical relativity (NR) and adiabatic point-particle black hole perturbation theory (ppBHPT) in the comparable mass regime for quasi-circular non-spinning binary black holes. Specifically, we reassess the $\alpha$-$\beta$ scaling technique, previously introduced by Islam et al, as... |
1311.5397 | Iver Brevik | I. Brevik, A. V. Timoshkin and Y. Rabochaya | Little Rip and Pseudo Rip Phenomena from Coupled Dark Energy | 11 pages, Latex2e, no figures. To appear in Modern Physics Letters A | Modern Physics Letters A 28, 1350172 (2013) | 10.1142/S0217732313501721 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Little Rip (LR) and Pseudo Rip (PR) cosmological models with two
interacting ideal fluids, corresponding to dark energy and dark matter. The
interaction between the dark energy and the dark matter fluid components is
described in terms of the parameters in the equations of state for the LR and
PR universe... | [
{
"created": "Thu, 21 Nov 2013 13:29:44 GMT",
"version": "v1"
}
] | 2014-01-28 | [
[
"Brevik",
"I.",
""
],
[
"Timoshkin",
"A. V.",
""
],
[
"Rabochaya",
"Y.",
""
]
] | We consider Little Rip (LR) and Pseudo Rip (PR) cosmological models with two interacting ideal fluids, corresponding to dark energy and dark matter. The interaction between the dark energy and the dark matter fluid components is described in terms of the parameters in the equations of state for the LR and PR universes.... |
gr-qc/9405013 | Genadi A. Sardanashvily | G. Sardanashvily | Gravity as a Higgs Field. I.the Geometric Equivalence Principle | 20 pages, LaTeX file | null | null | null | gr-qc | null | {\it If gravity is a metric field by Einstein, it is a Higgs field.}
Gravitation theory meets spontaneous symmetry breaking in accordance with the
Equivalence Principle reformulated in the spirit of Klein-Chern geometries of
invariants. In gravitation theory, the structure group of the principal linear
frame bundle $... | [
{
"created": "Fri, 6 May 1994 14:26:38 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sardanashvily",
"G.",
""
]
] | {\it If gravity is a metric field by Einstein, it is a Higgs field.} Gravitation theory meets spontaneous symmetry breaking in accordance with the Equivalence Principle reformulated in the spirit of Klein-Chern geometries of invariants. In gravitation theory, the structure group of the principal linear frame bundle $LX... |
1304.3954 | Hernando Quevedo | Hernando Quevedo, Alberto Sanchez and Safia Taj | On the ensemble dependence in black hole geometrothermodynamics | 14 pages, no figures | null | 10.1088/0031-8949/89/8/084007 | CBPF-011 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the dependence of thermodynamic properties of black holes on
the choice of statistical ensemble for a particular class of
Einstein-Maxwell-Gauss-Bonnet black holes with cosmological constant. We use
partial Legendre transformations in the thermodynamic limit in order to compare
the results in different... | [
{
"created": "Sun, 14 Apr 2013 22:05:42 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Quevedo",
"Hernando",
""
],
[
"Sanchez",
"Alberto",
""
],
[
"Taj",
"Safia",
""
]
] | We investigate the dependence of thermodynamic properties of black holes on the choice of statistical ensemble for a particular class of Einstein-Maxwell-Gauss-Bonnet black holes with cosmological constant. We use partial Legendre transformations in the thermodynamic limit in order to compare the results in different e... |
2205.01967 | Yusef Maleki | Yusef Maleki and Alireza Maleki | Complementarity-Entanglement Tradeoff in Quantum Gravity | 9 pages, 5 figures | Phys. Rev. D 105, 086024 (2022) | 10.1103/PhysRevD.105.086024 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | Quantization of the gravity remains one of the most important, yet extremely
illusive, challenges at the heart of modern physics. Any attempt to resolve
this long-standing problem seems to be doomed, as the route to any direct
empirical evidence (i.e., detecting gravitons) for shedding light on the
quantum aspect of ... | [
{
"created": "Wed, 4 May 2022 09:34:10 GMT",
"version": "v1"
}
] | 2022-05-05 | [
[
"Maleki",
"Yusef",
""
],
[
"Maleki",
"Alireza",
""
]
] | Quantization of the gravity remains one of the most important, yet extremely illusive, challenges at the heart of modern physics. Any attempt to resolve this long-standing problem seems to be doomed, as the route to any direct empirical evidence (i.e., detecting gravitons) for shedding light on the quantum aspect of th... |
1002.4880 | Craig J. Hogan | Craig J. Hogan | Interferometers as Probes of Planckian Quantum Geometry | 23 pages, 6 figures, Latex. To appear in Physical Review D | null | 10.1103/PhysRevD.85.064007 | FERMILAB-PUB-10-036-A-T | gr-qc astro-ph.CO hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A theory of position of massive bodies is proposed that results in an
observable quantum behavior of geometry at the Planck scale, $t_P$. Departures
from classical world lines in flat spacetime are described by Planckian
noncommuting operators for position in different directions, as defined by
interactions with null... | [
{
"created": "Thu, 25 Feb 2010 21:07:32 GMT",
"version": "v1"
},
{
"created": "Sun, 31 Oct 2010 16:04:38 GMT",
"version": "v10"
},
{
"created": "Mon, 13 Dec 2010 11:57:48 GMT",
"version": "v11"
},
{
"created": "Tue, 4 Jan 2011 23:38:22 GMT",
"version": "v12"
},
{
... | 2013-05-30 | [
[
"Hogan",
"Craig J.",
""
]
] | A theory of position of massive bodies is proposed that results in an observable quantum behavior of geometry at the Planck scale, $t_P$. Departures from classical world lines in flat spacetime are described by Planckian noncommuting operators for position in different directions, as defined by interactions with null w... |
gr-qc/9409036 | Donald Marolf | Donald Marolf | The Spectral Analysis Inner Product for Quantum Gravity | 5 pages LaTex, UCSBTH-94-38, CGPG-94/9-1 | null | null | null | gr-qc | null | This submission to the Proceedings of the Seventh Marcel-Grossman Conference
is an advertisement for the use of the ``spectral analysis inner product" for
minisuperspace models in quantum gravity.
| [
{
"created": "Fri, 16 Sep 1994 18:36:26 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Marolf",
"Donald",
""
]
] | This submission to the Proceedings of the Seventh Marcel-Grossman Conference is an advertisement for the use of the ``spectral analysis inner product" for minisuperspace models in quantum gravity. |
gr-qc/9801059 | Shahar Hod | Shahar Hod and Tsvi Piran | Late-Time Tails in Gravitational Collapse of a Self-Interacting
(Massive) Scalar-Field and Decay of a Self-Interacting Scalar Hair | 16 pages, 3 ps figures, Revtex | Phys.Rev. D58 (1998) 044018 | 10.1103/PhysRevD.58.044018 | null | gr-qc | null | We study analytically the initial value problem for a self-interacting
(massive) scalar-field on a Reissner-Nordstr\"om spacetime. Following the
no-hair theorem we examine the dynamical physical mechanism by which the
self-interacting (SI) hair decays. We show that the intermediate asymptotic
behaviour of SI perturba... | [
{
"created": "Sun, 18 Jan 1998 15:17:01 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Jan 1998 13:32:24 GMT",
"version": "v2"
},
{
"created": "Tue, 6 Oct 1998 09:26:48 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Hod",
"Shahar",
""
],
[
"Piran",
"Tsvi",
""
]
] | We study analytically the initial value problem for a self-interacting (massive) scalar-field on a Reissner-Nordstr\"om spacetime. Following the no-hair theorem we examine the dynamical physical mechanism by which the self-interacting (SI) hair decays. We show that the intermediate asymptotic behaviour of SI perturbati... |
gr-qc/0005105 | Jljing | Jiliang Jing, Mu-Lin Yan | Statistical Entropy of a Stationary Dilaton Black Hole from Cardy
Formula | 11 pages, no figure, RevTex. Accepted for publication in Phys. Rev. D | Phys.Rev.D63:024003,2001 | 10.1103/PhysRevD.63.024003 | null | gr-qc hep-th | null | With Carlip's boundary conditions, a standard Virasoro subalgebra with
corresponding central charge for stationary dilaton black hole obtained in the
low-energy effective field theory describing string is constructed at a Killing
horizon. The statistical entropy of stationary dilaton black hole yielded by
standard Ca... | [
{
"created": "Wed, 24 May 2000 09:03:29 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Sep 2000 14:00:24 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Jing",
"Jiliang",
""
],
[
"Yan",
"Mu-Lin",
""
]
] | With Carlip's boundary conditions, a standard Virasoro subalgebra with corresponding central charge for stationary dilaton black hole obtained in the low-energy effective field theory describing string is constructed at a Killing horizon. The statistical entropy of stationary dilaton black hole yielded by standard Card... |
2307.00922 | Carlos Bouthelier-Madre | J. L. Alonso, C. Bouthelier-Madre, J. Clemente-Gallardo, D.
Mart\'inez-Crespo | Hybrid Geometrodynamics: A Hamiltonian description of classical gravity
coupled to quantum matter | null | null | 10.1088/1361-6382/ad3459 | null | gr-qc math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize the Hamiltonian picture of General Relativity coupled to
classical matter, known as geometrodynamics, to the case where such matter is
described by a Quantum Field Theory in Curved Spacetime, but gravity is still
described by a classical metric tensor field over a spatial hypersurface and
its associated... | [
{
"created": "Mon, 3 Jul 2023 10:46:40 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Feb 2024 22:39:55 GMT",
"version": "v2"
}
] | 2024-03-20 | [
[
"Alonso",
"J. L.",
""
],
[
"Bouthelier-Madre",
"C.",
""
],
[
"Clemente-Gallardo",
"J.",
""
],
[
"Martínez-Crespo",
"D.",
""
]
] | We generalize the Hamiltonian picture of General Relativity coupled to classical matter, known as geometrodynamics, to the case where such matter is described by a Quantum Field Theory in Curved Spacetime, but gravity is still described by a classical metric tensor field over a spatial hypersurface and its associated m... |
gr-qc/0210041 | Edward Malec | J. Karkowski, K. Roszkowski, Z. Swierczynski and E. Malec | Waves in Schwarzschild spacetimes: How strong can imprints of the
spacetime curvature be | null | Phys.Rev.D67:064024,2003 | 10.1103/PhysRevD.67.064024 | null | gr-qc | null | Misprints corrected, two references added. To appear in the Phys. Rev. D.
| [
{
"created": "Mon, 14 Oct 2002 12:23:41 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Mar 2003 12:26:46 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Karkowski",
"J.",
""
],
[
"Roszkowski",
"K.",
""
],
[
"Swierczynski",
"Z.",
""
],
[
"Malec",
"E.",
""
]
] | Misprints corrected, two references added. To appear in the Phys. Rev. D. |
gr-qc/0010075 | Pascual-Sanchez J.-F. | J.-F. Pascual-S\'anchez | The harmonic gauge condition in the gravitomagnetic equations | 8 pages, LaTeX, to appear in Il Nuovo Cimento B (2000) | Nuovo Cim. B115 (2000) 725-732 | null | null | gr-qc | null | It has been asserted in the literature that the analogy between the linear
and first order slow motion approximation of Einstein equations of General
Relativity (gravitomagnetic equations) and the Maxwell-Lorentz equations of
electrodynamics breaks down if the gravitational potentials are time dependent.
In this wo... | [
{
"created": "Fri, 20 Oct 2000 17:31:54 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Pascual-Sánchez",
"J. -F.",
""
]
] | It has been asserted in the literature that the analogy between the linear and first order slow motion approximation of Einstein equations of General Relativity (gravitomagnetic equations) and the Maxwell-Lorentz equations of electrodynamics breaks down if the gravitational potentials are time dependent. In this work, ... |
gr-qc/0202088 | L. Fern\'andez | L. Fernandez-Jambrina (Universidad Politecnica de Madrid, Spain) | Comment on ``Singularity-free Cosmological Solutions with Non-rotating
Perfect Fluids'' | 4 pages, 0 figures, RevTeX4, submitted to Physical Review D | null | null | null | gr-qc | null | A theorem stated by Raychaudhuri which claims that the only physical
non-singular cosmological models are comprised in the Ruiz-Senovilla family is
shown to be incorrect. An explicit counterexample is provided and the failure
of the argument leading to the theorem is explicitly pointed out.
| [
{
"created": "Sun, 24 Feb 2002 21:52:05 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Fernandez-Jambrina",
"L.",
"",
"Universidad Politecnica de Madrid, Spain"
]
] | A theorem stated by Raychaudhuri which claims that the only physical non-singular cosmological models are comprised in the Ruiz-Senovilla family is shown to be incorrect. An explicit counterexample is provided and the failure of the argument leading to the theorem is explicitly pointed out. |
0908.4110 | Kristin Schleich | Kristin Schleich and Donald M. Witt | A simple proof of Birkhoff's theorem for cosmological constant | 10 pages, 5 figures References added; typo in eqn. 12 fixed | null | 10.1063/1.3503447 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a simple, unified proof of Birkhoff's theorem for the vacuum and
cosmological constant case, emphasizing its local nature. We discuss its
implications for the maximal analytic extensions of Schwarzschild,
Schwarzschild(-anti)-de Sitter and Nariai spacetimes. In particular, we note
that the maximal analytic... | [
{
"created": "Thu, 27 Aug 2009 23:35:43 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Oct 2009 17:51:07 GMT",
"version": "v2"
}
] | 2015-05-14 | [
[
"Schleich",
"Kristin",
""
],
[
"Witt",
"Donald M.",
""
]
] | We provide a simple, unified proof of Birkhoff's theorem for the vacuum and cosmological constant case, emphasizing its local nature. We discuss its implications for the maximal analytic extensions of Schwarzschild, Schwarzschild(-anti)-de Sitter and Nariai spacetimes. In particular, we note that the maximal analytic e... |
2306.10434 | Claudio Cremaschini | Claudio Cremaschini and Zden\v{e}k Stuchl\'ik | Carter-constant induced mechanism for generation of anisotropic kinetic
equilibria in collisionless N-body systems | 14 pages | International Journal of Modern Physics D 26, 1750001 (2017) | 10.1142/S0218271817500018 | null | gr-qc astro-ph.HE cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new intrinsically-relativistic kinetic mechanism for generation of
non-isotropic relativistic kinetic equilibria in collisionless N-body systems
is pointed out. The theory is developed in the framework of the covariant
Vlasov statistical description. The new effect is based on the constraints
placed by the conserva... | [
{
"created": "Sat, 17 Jun 2023 22:50:48 GMT",
"version": "v1"
}
] | 2023-06-21 | [
[
"Cremaschini",
"Claudio",
""
],
[
"Stuchlík",
"Zdeněk",
""
]
] | A new intrinsically-relativistic kinetic mechanism for generation of non-isotropic relativistic kinetic equilibria in collisionless N-body systems is pointed out. The theory is developed in the framework of the covariant Vlasov statistical description. The new effect is based on the constraints placed by the conservati... |
gr-qc/9801018 | Lior M. Burko | Lior M. Burko | Interaction of electromagnetic perturbations with infalling observers
inside spherical charged black holes | null | null | null | TECHNION-PH-95-14 | gr-qc quant-ph | null | The electromagnetic radiation that falls into a Reissner-Nordstr\"{o}m black
hole is known to develop a ``blue sheet'', namely, an infinite concentration of
energy density at the Cauchy horizon. The interaction of these divergent
electromagnetic fields with infalling matter was recently analyzed (L. M. burko
and A. O... | [
{
"created": "Thu, 8 Jan 1998 14:55:53 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Burko",
"Lior M.",
""
]
] | The electromagnetic radiation that falls into a Reissner-Nordstr\"{o}m black hole is known to develop a ``blue sheet'', namely, an infinite concentration of energy density at the Cauchy horizon. The interaction of these divergent electromagnetic fields with infalling matter was recently analyzed (L. M. burko and A. Ori... |
gr-qc/0604080 | James S. Graber | James S. Graber | Performing a theoretically robust Ryan test using intermediate-mass
black holes | Poster paper presented at GWDAW-10 10th Gravitational Wave Data
Analysis Workshop. Submitted to Classical & Quantum Gravity; 10 pages LaTeX,
Figure Size Increased | null | null | null | gr-qc | null | We investigate the possibility of using binary IMBH inspirals to perform the
Ryan test of general relativity in a theoretically robust manner using data
from early in the detectable part of the inspiral. We find this to be feasible
and compute the masses of the most favourable systems.
| [
{
"created": "Wed, 19 Apr 2006 12:34:53 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Apr 2006 16:43:04 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Graber",
"James S.",
""
]
] | We investigate the possibility of using binary IMBH inspirals to perform the Ryan test of general relativity in a theoretically robust manner using data from early in the detectable part of the inspiral. We find this to be feasible and compute the masses of the most favourable systems. |
1505.05870 | Masahiro Hotta | Masahiro Hotta and Ayumu Sugita | The Fall of Black Hole Firewall: Natural Nonmaximal Entanglement for
Page Curve | 30 pages, 16 figures, some comments and figures are added | null | 10.1093/ptep/ptv170 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The black hole firewall conjecture is based on Page curve hypothesis, which
claims that entanglement between black hole and Hawking radiation is almost
maximum. The hypothesis is inspired by Lubkin-Lloyd-Pagels-Page theorem for
degenerate systems with zero Hamiltonian. Adopting canonical typicality for
nondegenerate ... | [
{
"created": "Wed, 20 May 2015 20:39:02 GMT",
"version": "v1"
},
{
"created": "Sat, 6 Jun 2015 02:52:28 GMT",
"version": "v2"
},
{
"created": "Wed, 30 Sep 2015 22:49:57 GMT",
"version": "v3"
},
{
"created": "Fri, 2 Oct 2015 00:44:00 GMT",
"version": "v4"
}
] | 2015-12-23 | [
[
"Hotta",
"Masahiro",
""
],
[
"Sugita",
"Ayumu",
""
]
] | The black hole firewall conjecture is based on Page curve hypothesis, which claims that entanglement between black hole and Hawking radiation is almost maximum. The hypothesis is inspired by Lubkin-Lloyd-Pagels-Page theorem for degenerate systems with zero Hamiltonian. Adopting canonical typicality for nondegenerate sy... |
2103.16626 | Christian Pfeifer | Christian Pfeifer and Jos\'e Javier Relancio | Deformed relativistic kinematics on curved spacetime -- a geometric
approach | 19 pages, essay written for the Gravity Research Foundation 2021,
extended to a full article, published version | The European Physical Journal C volume 82, Article number: 150
(2022) | 10.1140/epjc/s10052-022-10066-w | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Deformed relativistic kinematics have been considered as a way to capture
residual effects of quantum gravity. It has been shown that they can be
understood geometrically in terms of a curved momentum space on a flat
spacetime. In this article we present a systematic analysis under which
conditions and how deformed r... | [
{
"created": "Tue, 30 Mar 2021 19:06:24 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Aug 2021 08:22:27 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Feb 2022 07:35:44 GMT",
"version": "v3"
}
] | 2022-02-18 | [
[
"Pfeifer",
"Christian",
""
],
[
"Relancio",
"José Javier",
""
]
] | Deformed relativistic kinematics have been considered as a way to capture residual effects of quantum gravity. It has been shown that they can be understood geometrically in terms of a curved momentum space on a flat spacetime. In this article we present a systematic analysis under which conditions and how deformed rel... |
2001.03613 | Behzad Tajahmad | Behzad Tajahmad | Raychaudhuri-based reconstruction of anisotropic Einstein-Maxwell
equation in 1+3 covariant formalism of $f(R)$-gravity | 19 pages, 8 figures | null | 10.1140/epjc/s10052-020-7986-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, a new strategy to the reconstruction of $f(R)$-gravity models based
on the Raychaudhuri equation has been suggested by Choudhury et al. In this
paper, utilizing this method, the reconstruction of anisotropic
Einstein-Maxwell equation in the $1+3$ covariant formalism of $f(R)$-gravity is
investigated in four... | [
{
"created": "Fri, 10 Jan 2020 18:52:14 GMT",
"version": "v1"
}
] | 2020-06-24 | [
[
"Tajahmad",
"Behzad",
""
]
] | Recently, a new strategy to the reconstruction of $f(R)$-gravity models based on the Raychaudhuri equation has been suggested by Choudhury et al. In this paper, utilizing this method, the reconstruction of anisotropic Einstein-Maxwell equation in the $1+3$ covariant formalism of $f(R)$-gravity is investigated in four m... |
2310.20147 | Jonathan Engle | Jonathan Engle and Simone Speziale | Spinfoams: Foundations | 43 pages, 1 figure, Invited Chapter for the Handbook of Quantum
Gravity (Eds. Bambi, Modesto and Shapiro, Springer 2023) | In: Bambi, C., Modesto, L., Shapiro, I. (eds) Handbook of Quantum
Gravity. Springer, Singapore (2023) | 10.1007/978-981-19-3079-9_99-1 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spinfoams provide a framework for the dynamics of loop quantum gravity that
is manifestly covariant under the full four-dimensional diffeomorphism symmetry
group of general relativity. In this way they complete the ideal of
three-dimensional diffeomorphism covariance that consistently motivates loop
quantum gravity a... | [
{
"created": "Tue, 31 Oct 2023 03:30:23 GMT",
"version": "v1"
}
] | 2023-11-01 | [
[
"Engle",
"Jonathan",
""
],
[
"Speziale",
"Simone",
""
]
] | Spinfoams provide a framework for the dynamics of loop quantum gravity that is manifestly covariant under the full four-dimensional diffeomorphism symmetry group of general relativity. In this way they complete the ideal of three-dimensional diffeomorphism covariance that consistently motivates loop quantum gravity at ... |
2402.19459 | Jonathan Oppenheim | Jonathan Oppenheim and Andrea Russo | Anomalous contribution to galactic rotation curves due to stochastic
spacetime | v2 : a comment added, and more critical discussion extended, v3 :
comparison with tabletop experiments added | null | null | null | gr-qc astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a proposed alternative to quantum gravity, in which the spacetime
metric is treated as classical, even while matter fields remain quantum.
Consistency of the theory necessarily requires that the metric evolve
stochastically. Here, we show that this stochastic behaviour leads to a
modification of general r... | [
{
"created": "Thu, 29 Feb 2024 18:52:40 GMT",
"version": "v1"
},
{
"created": "Wed, 1 May 2024 17:54:56 GMT",
"version": "v2"
},
{
"created": "Mon, 22 Jul 2024 17:39:00 GMT",
"version": "v3"
}
] | 2024-07-23 | [
[
"Oppenheim",
"Jonathan",
""
],
[
"Russo",
"Andrea",
""
]
] | We consider a proposed alternative to quantum gravity, in which the spacetime metric is treated as classical, even while matter fields remain quantum. Consistency of the theory necessarily requires that the metric evolve stochastically. Here, we show that this stochastic behaviour leads to a modification of general rel... |
1903.08556 | Sara Saghafi | Sara Saghafi, Koroush Nozari and Milad Hajebrahimi | Thermodynamics of Non-Commutative Scalar-Tensor-Vector Gravity Black
holes | 17 pages, 5 figures | International Journal of Geometric Methods in Modern Physics,2020 | 10.1142/S0219887821500249 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we analyze the thermodynamic stability of Schwarzschild
Modified Gravity (MOG) black holes in a non-commutative framework. We show
that, unlike a commutative MOG black hole, in the coherent state picture of
non-commutativity MOG black holes are thermodynamically stable. At the final
stage of evaporatio... | [
{
"created": "Tue, 19 Mar 2019 14:38:16 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Mar 2019 14:29:42 GMT",
"version": "v2"
},
{
"created": "Mon, 25 Mar 2019 19:48:01 GMT",
"version": "v3"
},
{
"created": "Mon, 8 Apr 2019 05:01:05 GMT",
"version": "v4"
},
{
"cr... | 2020-12-02 | [
[
"Saghafi",
"Sara",
""
],
[
"Nozari",
"Koroush",
""
],
[
"Hajebrahimi",
"Milad",
""
]
] | In this paper, we analyze the thermodynamic stability of Schwarzschild Modified Gravity (MOG) black holes in a non-commutative framework. We show that, unlike a commutative MOG black hole, in the coherent state picture of non-commutativity MOG black holes are thermodynamically stable. At the final stage of evaporation,... |
0705.2325 | Orfeu Bertolami | Orfeu Bertolami | A Curvature Principle for the interaction between universes | Essay selected for an honorable mention by the Gravity Research
Foundation, 2007. Plain latex, 8 pages | Gen.Rel.Grav.40:1891-1898,2008 | 10.1007/s10714-008-0608-6 | DF/IST-2.2007 | gr-qc | null | We propose a Curvature Principle to describe the dynamics of interacting
universes in a multi-universe scenario and show, in the context of a simplified
model, how interaction drives the cosmological constant of one of the universes
toward a vanishingly small value. We also conjecture on how the proposed
Curvature Pr... | [
{
"created": "Wed, 16 May 2007 10:49:57 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Bertolami",
"Orfeu",
""
]
] | We propose a Curvature Principle to describe the dynamics of interacting universes in a multi-universe scenario and show, in the context of a simplified model, how interaction drives the cosmological constant of one of the universes toward a vanishingly small value. We also conjecture on how the proposed Curvature Prin... |
2307.04325 | Tayyab Naseer | M. Sharif, Tayyab Naseer | Influence of Charge on Anisotropic Class-one Solution in Non-minimally
Coupled Gravity | 37 pages, 11 figures | Phys. Scr. 97(2022)125016 | 10.1088/1402-4896/aca142 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper studies charged star models associated with anisotropic matter
distribution in $f(\mathcal{R},\mathcal{T},\mathcal{Q})$ theory, where
$\mathcal{Q}=\mathcal{R}_{\phi\psi}\mathcal{T}^{\phi\psi}$. For this purpose,
we take a linear model of this gravity as $\mathcal{R}+\zeta\mathcal{Q}$, where
$\zeta$ represe... | [
{
"created": "Mon, 10 Jul 2023 03:39:39 GMT",
"version": "v1"
}
] | 2023-07-11 | [
[
"Sharif",
"M.",
""
],
[
"Naseer",
"Tayyab",
""
]
] | This paper studies charged star models associated with anisotropic matter distribution in $f(\mathcal{R},\mathcal{T},\mathcal{Q})$ theory, where $\mathcal{Q}=\mathcal{R}_{\phi\psi}\mathcal{T}^{\phi\psi}$. For this purpose, we take a linear model of this gravity as $\mathcal{R}+\zeta\mathcal{Q}$, where $\zeta$ represent... |
1911.09094 | Jose Socorro Garcia | J. Socorro, S. P\'erez-Pay\'an, Abraham Espinoza-Garc\'ia and Luis Rey
D\'iaz-Barr\'on | Cosmological volume acceleration in dust epoch: using scaling solutions
and variable cosmological term $\Lambda(t)$ within an anisotropic
cosmological model | 12 pages, two figures, Mayor changes in abstract, introduction and
title, and we add 11 references. To publish in Astrophysics Space Science
Journal | null | 10.1007/s10509-020-03810-9 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Under the premise that the current observations of the cosmic microwave
background radiation set a very stringent limit to the anisotropy of the
universe, we consider an anistropic model in the presence of a barotropic
perfect fluid and a homogeneous scalar field, which transits to a flat FRW
cosmology for late times... | [
{
"created": "Wed, 20 Nov 2019 05:18:00 GMT",
"version": "v1"
},
{
"created": "Fri, 29 May 2020 19:15:58 GMT",
"version": "v2"
}
] | 2020-06-02 | [
[
"Socorro",
"J.",
""
],
[
"Pérez-Payán",
"S.",
""
],
[
"Espinoza-García",
"Abraham",
""
],
[
"Díaz-Barrón",
"Luis Rey",
""
]
] | Under the premise that the current observations of the cosmic microwave background radiation set a very stringent limit to the anisotropy of the universe, we consider an anistropic model in the presence of a barotropic perfect fluid and a homogeneous scalar field, which transits to a flat FRW cosmology for late times i... |
gr-qc/0207019 | Yasusada Nambu | Yasusada Nambu and Shin-ichi Ohokata | Long-wavelength Cosmological Perturbation in the Universe with Multiple
Perfect Fluids | to be published in CQG | Class.Quant.Grav. 19 (2002) 4263-4272 | 10.1088/0264-9381/19/16/303 | null | gr-qc | null | We investigate the large scale cosmological perturbation in the Universe with
multiple perfect fluids. Using the long-wavelength approximation with
Hamilton-Jacobi method, we derive the formula for the gauge invariant comoving
curvature perturbation. As an application of our approach, we examine the large
scale pertu... | [
{
"created": "Wed, 3 Jul 2002 07:42:10 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Nambu",
"Yasusada",
""
],
[
"Ohokata",
"Shin-ichi",
""
]
] | We investigate the large scale cosmological perturbation in the Universe with multiple perfect fluids. Using the long-wavelength approximation with Hamilton-Jacobi method, we derive the formula for the gauge invariant comoving curvature perturbation. As an application of our approach, we examine the large scale perturb... |
1401.3279 | Sumanta Chakraborty | Sumanta Chakraborty, Soumitra SenGupta | Bulk scalar field in warped extra dimensional models | Mathches published version; 14 pages, two figures | Phys. Rev. D 89, 126001 (2014) | 10.1103/PhysRevD.89.126001 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work presents a general formalism to analyze a generic bulk scalar field
in a multiple warped extra-dimensional model with arbitrary number of extra
dimensions. The Kaluza-Klein mass modes along with the self-interaction
couplings are determined and the possibility of having lowest lying KK mode
masses near TeV ... | [
{
"created": "Sat, 11 Jan 2014 10:24:50 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Jun 2014 12:35:44 GMT",
"version": "v2"
}
] | 2014-06-05 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"SenGupta",
"Soumitra",
""
]
] | This work presents a general formalism to analyze a generic bulk scalar field in a multiple warped extra-dimensional model with arbitrary number of extra dimensions. The Kaluza-Klein mass modes along with the self-interaction couplings are determined and the possibility of having lowest lying KK mode masses near TeV sc... |
0912.0476 | Valeriu Predoi | V. Predoi, J. Clark, T. Creighton, E. Daw, S. Fairhurst, I. S. Heng,
J. Kanner, T. Regimbau, P. Shawhan, X. Siemens, P. Sutton, A. Vecchio, D.
White, G. Woan | Prospects for joint radio telescope and gravitational wave searches for
astrophysical transients | 12 pages, Amaldi 8 Conference (New York, 2009) proceedings paper | null | 10.1088/0264-9381/27/8/084018 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The radio skies remain mostly unobserved when it comes to transient
phenomena. The direct detection of gravitational waves will mark a major
milestone of modern astronomy, as an entirely new window will open on the
universe. Two apparently independent phenomena can be brought together in a
coincident effort that has ... | [
{
"created": "Wed, 2 Dec 2009 17:47:22 GMT",
"version": "v1"
}
] | 2015-05-14 | [
[
"Predoi",
"V.",
""
],
[
"Clark",
"J.",
""
],
[
"Creighton",
"T.",
""
],
[
"Daw",
"E.",
""
],
[
"Fairhurst",
"S.",
""
],
[
"Heng",
"I. S.",
""
],
[
"Kanner",
"J.",
""
],
[
"Regimbau",
"T.",
"... | The radio skies remain mostly unobserved when it comes to transient phenomena. The direct detection of gravitational waves will mark a major milestone of modern astronomy, as an entirely new window will open on the universe. Two apparently independent phenomena can be brought together in a coincident effort that has th... |
1406.3918 | Hemwati Nandan | Rashmi Uniyal, Hemwati Nandan and K.D. Purohit | Geodesic Motion in a Charged 2D Stringy Blackhole Spacetime | 17 pages, 6 figures | Mod. Phys. Lett. A, Vol. 29, No. 29 (2014) 1450157 | 10.1142/S0217732314501570 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the timelike geodesics and geodesic deviation for a two-dimensional
stringy blackhole spacetime in Schwarzschild gauge. We have analyzed the
properties of effective potential along with the structure of the possible
orbits for test particles with different settings of blackhole parameters. The
exactly solvab... | [
{
"created": "Mon, 16 Jun 2014 06:54:00 GMT",
"version": "v1"
}
] | 2014-09-23 | [
[
"Uniyal",
"Rashmi",
""
],
[
"Nandan",
"Hemwati",
""
],
[
"Purohit",
"K. D.",
""
]
] | We study the timelike geodesics and geodesic deviation for a two-dimensional stringy blackhole spacetime in Schwarzschild gauge. We have analyzed the properties of effective potential along with the structure of the possible orbits for test particles with different settings of blackhole parameters. The exactly solvable... |
1602.00697 | Pierre Christian | Pierre Christian | Newton's Theorem of Revolving Orbits in Curved Spacetime | 10 pages, 7 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Newton's theorem of revolving orbits states that one can multiply the angular
speed of a Keplerian orbit by a factor $k$ by applying a radial inverse cubed
force proportional to $(1-k^2)$. In this paper we derive an extension of this
theorem in general relativity, valid for the motion of massive particles in any
stat... | [
{
"created": "Mon, 1 Feb 2016 21:00:07 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Feb 2016 20:35:23 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Oct 2016 23:37:44 GMT",
"version": "v3"
}
] | 2016-10-06 | [
[
"Christian",
"Pierre",
""
]
] | Newton's theorem of revolving orbits states that one can multiply the angular speed of a Keplerian orbit by a factor $k$ by applying a radial inverse cubed force proportional to $(1-k^2)$. In this paper we derive an extension of this theorem in general relativity, valid for the motion of massive particles in any static... |
0902.0351 | Florian Conrady | Florian Conrady and Laurent Freidel (Perimeter Inst. Theor. Phys.) | Quantum geometry from phase space reduction | 33 pages, 1 figure | J.Math.Phys.50:123510,2009 | 10.1063/1.3257109 | PI-QG-118 | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we give an explicit isomorphism between the usual spin network
basis and the direct quantization of the reduced phase space of tetrahedra. The
main outcome is a formula that describes the space of SU(2) invariant states by
an integral over coherent states satisfying the closure constraint exactly, or
equ... | [
{
"created": "Mon, 2 Feb 2009 20:50:13 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Feb 2009 20:37:00 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Mar 2009 12:20:42 GMT",
"version": "v3"
}
] | 2010-01-15 | [
[
"Conrady",
"Florian",
"",
"Perimeter Inst. Theor. Phys."
],
[
"Freidel",
"Laurent",
"",
"Perimeter Inst. Theor. Phys."
]
] | In this work we give an explicit isomorphism between the usual spin network basis and the direct quantization of the reduced phase space of tetrahedra. The main outcome is a formula that describes the space of SU(2) invariant states by an integral over coherent states satisfying the closure constraint exactly, or equiv... |
gr-qc/9312029 | Jorge Pullin | C. Di Bartolo, R. Gambini, J. Griego and J. Pullin | Extended Loops: A New Arena for Nonperturbative Quantum Gravity | 12pp, Revtex, no figures, CGPG-93/12-1 | Phys.Rev.Lett. 72 (1994) 3638-3641 | 10.1103/PhysRevLett.72.3638 | null | gr-qc hep-th | null | We propose a new representation for gauge theories and quantum gravity. It
can be viewed as a generalization of the loop representation. We make use of a
recently introduced extension of the group of loops into a Lie Group. This
extension allows the use of functional methods to solve the constraint
equations. It puts... | [
{
"created": "Fri, 17 Dec 1993 16:06:53 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Di Bartolo",
"C.",
""
],
[
"Gambini",
"R.",
""
],
[
"Griego",
"J.",
""
],
[
"Pullin",
"J.",
""
]
] | We propose a new representation for gauge theories and quantum gravity. It can be viewed as a generalization of the loop representation. We make use of a recently introduced extension of the group of loops into a Lie Group. This extension allows the use of functional methods to solve the constraint equations. It puts i... |
2204.10150 | Hajar Belmahi | A. Belhaj, H. Belmahi, M. Benali, H. El Moumni | Light Deflection by Rotating Regular Black Holes with a Cosmological
Constant | latex, 16 pages, 4 figures. Accepted for publication in Chin. J. Phys
2022 | null | 10.1016/j.cjph.2022.04.013 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the Gauss-Bonnet theorem, we compute and examine the deflection angle
of light rays by rotating regular black holes with a cosmological constant. By
the help of optical geometries, we first deal with the Hayward black holes with
cosmological contributions. Then, we reconsider the study of the Bardeen
solutions.... | [
{
"created": "Thu, 21 Apr 2022 14:58:43 GMT",
"version": "v1"
}
] | 2022-11-30 | [
[
"Belhaj",
"A.",
""
],
[
"Belmahi",
"H.",
""
],
[
"Benali",
"M.",
""
],
[
"Moumni",
"H. El",
""
]
] | Using the Gauss-Bonnet theorem, we compute and examine the deflection angle of light rays by rotating regular black holes with a cosmological constant. By the help of optical geometries, we first deal with the Hayward black holes with cosmological contributions. Then, we reconsider the study of the Bardeen solutions. W... |
2207.13454 | Clifford M. Will | Fatemeh Taherasghari and Clifford M. Will | Modified geodesic equations of motion for compact bodies in alternative
theories gravity | 8 pages | null | 10.1103/PhysRevD.106.064021 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We derive exact, modified geodesic equations for a system of non-spinning,
self-gravitating interacting bodies in a class of alternative theories of
gravity to general relativity. We use a prescription proposed by Eardley for
incorporating the effects of self-gravity within gravitationally bound bodies,
in which thei... | [
{
"created": "Wed, 27 Jul 2022 11:12:27 GMT",
"version": "v1"
}
] | 2022-10-05 | [
[
"Taherasghari",
"Fatemeh",
""
],
[
"Will",
"Clifford M.",
""
]
] | We derive exact, modified geodesic equations for a system of non-spinning, self-gravitating interacting bodies in a class of alternative theories of gravity to general relativity. We use a prescription proposed by Eardley for incorporating the effects of self-gravity within gravitationally bound bodies, in which their ... |
1205.2481 | Luca Lusanna | Luca Lusanna | From Clock Synchronization to Dark Matter as a Relativistic Inertial
Effect | 90 pages. Lecture at BOSS2011 | null | 10.1007/978-3-319-00215-6_8 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lecture at BOSS2011 on relativistic metrology, on clock synchronization,
relativistic dynamics and non-inertial frames in Minkowski spacetime, on
relativistic atomic physics, on ADM canonical tetrad gravity in asymptotically
Minkowskian spacetimes, on the York canonical basis identifying the inertial
(gauge) and tida... | [
{
"created": "Fri, 11 May 2012 10:56:25 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Lusanna",
"Luca",
""
]
] | Lecture at BOSS2011 on relativistic metrology, on clock synchronization, relativistic dynamics and non-inertial frames in Minkowski spacetime, on relativistic atomic physics, on ADM canonical tetrad gravity in asymptotically Minkowskian spacetimes, on the York canonical basis identifying the inertial (gauge) and tidal ... |
1801.08373 | Rabin Banerjee | Rabin Banerjee and Pradip Mukherjee | On the subtelties of nonrelativistic reduction and applications | 29 pages, no figure | null | 10.1016/j.nuclphysb.2018.11.002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Various subtleties and problems associated with nonrelativistic (NR)
reduction of a scalar field theory to the Schroedinger theory are discussed.
Contrary to the usual approaches that discuss the mapping among the equations
of motion or the actions, we highlight the mapping among the space time
generators. Using a nu... | [
{
"created": "Thu, 25 Jan 2018 12:20:50 GMT",
"version": "v1"
}
] | 2018-12-05 | [
[
"Banerjee",
"Rabin",
""
],
[
"Mukherjee",
"Pradip",
""
]
] | Various subtleties and problems associated with nonrelativistic (NR) reduction of a scalar field theory to the Schroedinger theory are discussed. Contrary to the usual approaches that discuss the mapping among the equations of motion or the actions, we highlight the mapping among the space time generators. Using a null... |
gr-qc/0502095 | Pavel Krtous | Pavel Krtous, Jiri Podolsky | Asymptotic directional structure of radiative fields in spacetimes with
a cosmological constant | CQG Topical Review (44 pages, 6 figures) | Class.Quant.Grav. 21 (2004) R233-R273 | null | null | gr-qc | null | We analyze the directional properties of general gravitational,
electromagnetic, and spin-s fields near conformal infinity I. The fields are
evaluated in normalized tetrads which are parallelly propagated along null
geodesics which approach a point P of I. The standard peeling-off property is
recovered and its meanin... | [
{
"created": "Tue, 22 Feb 2005 16:06:14 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Krtous",
"Pavel",
""
],
[
"Podolsky",
"Jiri",
""
]
] | We analyze the directional properties of general gravitational, electromagnetic, and spin-s fields near conformal infinity I. The fields are evaluated in normalized tetrads which are parallelly propagated along null geodesics which approach a point P of I. The standard peeling-off property is recovered and its meaning ... |
1109.5793 | Hanno Sahlmann | Hanno Sahlmann and Thomas Thiemann | Chern-Simons expectation values and quantum horizons from LQG and the
Duflo map | 5 pages, 2 figures. v2: update of bibliography, correction of typos,
virtually identical to published version | Phys. Rev. Lett. 108, 111303 (2012) | 10.1103/PhysRevLett.108.111303 | APCTP Pre2011-007 | gr-qc math-ph math.MP math.QA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report on a new approach to the calculation of Chern-Simons theory
expectation values, using the mathematical underpinnings of loop quantum
gravity, as well as the Duflo map, a quantization map for functions on Lie
algebras. These new developments can be used in the quantum theory for certain
types of black hole h... | [
{
"created": "Tue, 27 Sep 2011 07:28:34 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Mar 2012 07:21:28 GMT",
"version": "v2"
}
] | 2012-03-28 | [
[
"Sahlmann",
"Hanno",
""
],
[
"Thiemann",
"Thomas",
""
]
] | We report on a new approach to the calculation of Chern-Simons theory expectation values, using the mathematical underpinnings of loop quantum gravity, as well as the Duflo map, a quantization map for functions on Lie algebras. These new developments can be used in the quantum theory for certain types of black hole hor... |
2209.10851 | Quentin Baghi | Quentin Baghi, John G. Baker, Jacob Slutsky, James Ira Thorpe | Fully data-driven time-delay interferometry with time-varying delays | 12 pages, 7 figures. Update Eqs. (1) and (2) to generalize them to
all possible TDI combinations. Other minor changes | Annalen Der Physik 2023, 2200447 | 10.1002/andp.202200447 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Raw space-based gravitational-wave data like LISA's phase measurements are
dominated by laser frequency noise. The standard technique to make this data
usable for science is time-delay interferometry (TDI), which cancels laser
noise terms by forming suitable combinations of delayed measurements. We
recently introduce... | [
{
"created": "Thu, 22 Sep 2022 08:33:58 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Apr 2023 09:11:52 GMT",
"version": "v2"
}
] | 2023-04-12 | [
[
"Baghi",
"Quentin",
""
],
[
"Baker",
"John G.",
""
],
[
"Slutsky",
"Jacob",
""
],
[
"Thorpe",
"James Ira",
""
]
] | Raw space-based gravitational-wave data like LISA's phase measurements are dominated by laser frequency noise. The standard technique to make this data usable for science is time-delay interferometry (TDI), which cancels laser noise terms by forming suitable combinations of delayed measurements. We recently introduced ... |
2207.13654 | Sergey Paston | S.A. Paston, T.I. Zaitseva | Canonical formulation of embedding gravity in a form of General
Relativity with dark matter | LaTeX, 15 pages. This version corresponds to the published one | Gravitation and Cosmology 29 (2023) 153 | 10.1134/S0202289323020093 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study embedding gravity, a modified theory of gravity, in which our
space-time is assumed to be a four-dimensional surface in flat ten-dimensional
space. Based on a simple geometric idea, this theory can be reformulated as
General Relativity with additional degrees of freedom and contribution to
action, which can ... | [
{
"created": "Wed, 27 Jul 2022 17:20:08 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Jul 2023 11:34:26 GMT",
"version": "v2"
}
] | 2023-07-04 | [
[
"Paston",
"S. A.",
""
],
[
"Zaitseva",
"T. I.",
""
]
] | We study embedding gravity, a modified theory of gravity, in which our space-time is assumed to be a four-dimensional surface in flat ten-dimensional space. Based on a simple geometric idea, this theory can be reformulated as General Relativity with additional degrees of freedom and contribution to action, which can be... |
2211.15534 | Ming Zhang | Chaoxi Fang, Jie Jiang, Ming Zhang | Revisiting thermodynamic topologies of black holes | 18 pages | null | 10.1007/JHEP01(2023)102 | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-nd/4.0/ | In the generalized off-shell free energy landscape, black holes can be
treated as thermodynamic topological defects. The local topological properties
of the spacetime can be reflected by the winding numbers at the defects, while
the global topological nature can be classified by the topological number which
is the su... | [
{
"created": "Mon, 28 Nov 2022 16:42:37 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Dec 2022 02:46:24 GMT",
"version": "v2"
},
{
"created": "Sat, 31 Dec 2022 09:51:40 GMT",
"version": "v3"
}
] | 2023-02-08 | [
[
"Fang",
"Chaoxi",
""
],
[
"Jiang",
"Jie",
""
],
[
"Zhang",
"Ming",
""
]
] | In the generalized off-shell free energy landscape, black holes can be treated as thermodynamic topological defects. The local topological properties of the spacetime can be reflected by the winding numbers at the defects, while the global topological nature can be classified by the topological number which is the sum ... |
gr-qc/9907094 | The Mammouth | Tamath Rainsford (University of Adelaide) | Newtonian and Post-Newtonian approximations of the k = 0 Friedmann
Robertson Walker Cosmology | 11 pages, Latex, corrected typos | Gen.Rel.Grav. 32 (2000) 719-733 | 10.1023/A:1001971203318 | The University of Adelaide preprint 9929M84 | gr-qc | null | In a previous paper we derived a post-Newtonian approximation to cosmology
which, in contrast to former Newtonian and post-Newtonian cosmological
theories, has a well-posed initial value problem. In this paper, this new
post-Newtonian theory is compared with the fully general relativistic theory,
in the context of th... | [
{
"created": "Wed, 28 Jul 1999 08:47:40 GMT",
"version": "v1"
},
{
"created": "Sun, 12 Sep 1999 07:41:45 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Rainsford",
"Tamath",
"",
"University of Adelaide"
]
] | In a previous paper we derived a post-Newtonian approximation to cosmology which, in contrast to former Newtonian and post-Newtonian cosmological theories, has a well-posed initial value problem. In this paper, this new post-Newtonian theory is compared with the fully general relativistic theory, in the context of the ... |
2210.14574 | Marie-No\"elle C\'el\'erier | Marie-No\"elle C\'el\'erier | Fully integrated interior solutions of GR for stationary rigidly
rotating cylindrical perfect fluids | 11 pages, no figure | null | 10.1063/5.0131945 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In an important series of articles published during the 70's, Krasi\'nski
displayed a class of interior solutions of the Einstein field equations sourced
by a stationary isentropic rotating cylinder of perfect fluid. However, these
solutions depend on an unspecified arbitrary function, which lead the author to
claim ... | [
{
"created": "Wed, 26 Oct 2022 09:14:26 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Aug 2023 07:31:49 GMT",
"version": "v2"
}
] | 2023-08-08 | [
[
"Célérier",
"Marie-Noëlle",
""
]
] | In an important series of articles published during the 70's, Krasi\'nski displayed a class of interior solutions of the Einstein field equations sourced by a stationary isentropic rotating cylinder of perfect fluid. However, these solutions depend on an unspecified arbitrary function, which lead the author to claim th... |
0910.2936 | Martin Bojowald | Martin Bojowald | Quantum geometry and quantum dynamics at the Planck scale | 10 pages, 2 figures, Proceedings of "The Planck Scale" (XXV Max Born
Symposium, Wroclaw) | AIP Conf. Proc.1196:62-71, 2009 | 10.1063/1.3284401 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Canonical quantum gravity provides insights into the quantum dynamics as well
as quantum geometry of space-time by its implications for constraints. Loop
quantum gravity in particular requires specific corrections due to its
quantization procedure, which also results in a discrete picture of space. The
corresponding ... | [
{
"created": "Thu, 15 Oct 2009 16:55:58 GMT",
"version": "v1"
}
] | 2015-05-14 | [
[
"Bojowald",
"Martin",
""
]
] | Canonical quantum gravity provides insights into the quantum dynamics as well as quantum geometry of space-time by its implications for constraints. Loop quantum gravity in particular requires specific corrections due to its quantization procedure, which also results in a discrete picture of space. The corresponding ch... |
0707.0409 | Pavel Krtous | David Kubiznak, Pavel Krtous | On conformal Killing-Yano tensors for Plebanski-Demianski family of
solutions | 7 pages, no figures | Phys.Rev.D76:084036,2007 | 10.1103/PhysRevD.76.084036 | Alberta-Thy-15-07 | gr-qc hep-th | null | We present the explicit expressions for the conformal Killing-Yano tensors
for the Plebanski-Demianski family of type D solutions in four dimensions. Some
physically important special cases are discussed in more detail. In particular,
it is demonstrated how the conformal Killing-Yano tensor becomes the
Killing-Yano t... | [
{
"created": "Tue, 3 Jul 2007 12:47:59 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kubiznak",
"David",
""
],
[
"Krtous",
"Pavel",
""
]
] | We present the explicit expressions for the conformal Killing-Yano tensors for the Plebanski-Demianski family of type D solutions in four dimensions. Some physically important special cases are discussed in more detail. In particular, it is demonstrated how the conformal Killing-Yano tensor becomes the Killing-Yano ten... |
gr-qc/0508116 | Roy Maartens | Richard A. Brown, Roy Maartens, Eleftherios Papantonopoulos, Vassilis
Zamarias | A late-accelerating universe with no dark energy - and a
finite-temperature big bang | revised title and minor improvements, additional references; to
appear JCAP | JCAP 0511 (2005) 008 | 10.1088/1475-7516/2005/11/008 | null | gr-qc astro-ph hep-th | null | Brane-world models offer the possibility of explaining the late acceleration
of the universe via infra-red modifications to General Relativity, rather than
a dark energy field. However, one also expects ultra-violet modifications to
General Relativity, when high-energy stringy effects in the early universe
begin to g... | [
{
"created": "Sun, 28 Aug 2005 14:22:51 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Oct 2005 12:23:10 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Brown",
"Richard A.",
""
],
[
"Maartens",
"Roy",
""
],
[
"Papantonopoulos",
"Eleftherios",
""
],
[
"Zamarias",
"Vassilis",
""
]
] | Brane-world models offer the possibility of explaining the late acceleration of the universe via infra-red modifications to General Relativity, rather than a dark energy field. However, one also expects ultra-violet modifications to General Relativity, when high-energy stringy effects in the early universe begin to gro... |
gr-qc/9909037 | H. E. Puthoff, . D. | H. E. Puthoff | Polarizable-Vacuum (PV) representation of general relativity | corrected missing minus signs in eqns 68 and 71 | Found.Phys. 32 (2002) 927-943 | null | null | gr-qc | null | Standard pedagogy treats topics in general relativity (GR) in terms of tensor
formulations in curved space-time. Although mathematically straightforward, the
curved space-time approach can seem abstruse to beginning students due to the
degree of mathematical sophistication required. As a heuristic tool to provide
ins... | [
{
"created": "Fri, 10 Sep 1999 23:13:30 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Feb 2001 22:00:02 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Puthoff",
"H. E.",
""
]
] | Standard pedagogy treats topics in general relativity (GR) in terms of tensor formulations in curved space-time. Although mathematically straightforward, the curved space-time approach can seem abstruse to beginning students due to the degree of mathematical sophistication required. As a heuristic tool to provide insig... |
2209.06982 | Todd Oliynyk | Elliot Marshall, Todd A. Oliynyk | On the stability of relativistic perfect fluids with linear equations of
state $p=K\rho$ where $1/3<K<1$ | null | Lett. Math. Phys. 113 (2023), 102 | 10.1007/s11005-023-01722-7 | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For $1/3<K<1$, we consider the stability of two distinct families of
spatially homogeneous solutions to the relativistic Euler equations with a
linear equation of state $p=K\rho$ on exponentially expanding FLRW spacetimes.
The two families are distinguished by one being spatially isotropic while the
other is not. We ... | [
{
"created": "Thu, 15 Sep 2022 00:14:37 GMT",
"version": "v1"
}
] | 2024-03-20 | [
[
"Marshall",
"Elliot",
""
],
[
"Oliynyk",
"Todd A.",
""
]
] | For $1/3<K<1$, we consider the stability of two distinct families of spatially homogeneous solutions to the relativistic Euler equations with a linear equation of state $p=K\rho$ on exponentially expanding FLRW spacetimes. The two families are distinguished by one being spatially isotropic while the other is not. We es... |
1606.02302 | Carlos A. R. Herdeiro | Carlos A. R. Herdeiro, Eugen Radu | Static Einstein-Maxwell black holes with no spatial isometries in AdS
space | 5 pages, 4 figures; v2. change in title to comply with PRL
requirements. Version published in Physical Review Letters | Phys. Rev. Lett. 117, 221102 (2016) | 10.1103/PhysRevLett.117.221102 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explicitly construct static black hole solutions to the fully non-linear,
D=4, Einstein-Maxwell-AdS equations that have no continuous spatial symmetries.
These black holes have a smooth, topologically spherical horizon (section), but
without isometries, and approach, asymptotically, global AdS spacetime. They
are ... | [
{
"created": "Tue, 7 Jun 2016 20:00:02 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Nov 2016 20:28:52 GMT",
"version": "v2"
}
] | 2016-11-30 | [
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
]
] | We explicitly construct static black hole solutions to the fully non-linear, D=4, Einstein-Maxwell-AdS equations that have no continuous spatial symmetries. These black holes have a smooth, topologically spherical horizon (section), but without isometries, and approach, asymptotically, global AdS spacetime. They are in... |
2012.03446 | Sergio Mendoza | E. Barrientos, S. Mendoza, P. Padilla | Extending Friedmann equations using fractional derivatives using a Last
Step Modification technique: the case of a matter dominated accelerated
expanding Universe | 13 pages, 3 figures, 3 tables. Accepted for publication in the
Journal Symmetry | Symmetry 2021, 13(2), 174 | 10.3390/sym13020174 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a toy model for extending the Friedmann equations of relativistic
cosmology using fractional derivatives. We do this by replacing the integer
derivatives, in a few well-known cosmological results with fractional
derivatives leaving their order as a free parameter. All this with the
intention to explain the... | [
{
"created": "Mon, 7 Dec 2020 04:48:44 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Jan 2021 23:20:32 GMT",
"version": "v2"
}
] | 2021-01-25 | [
[
"Barrientos",
"E.",
""
],
[
"Mendoza",
"S.",
""
],
[
"Padilla",
"P.",
""
]
] | We present a toy model for extending the Friedmann equations of relativistic cosmology using fractional derivatives. We do this by replacing the integer derivatives, in a few well-known cosmological results with fractional derivatives leaving their order as a free parameter. All this with the intention to explain the c... |
1001.4148 | Khaled Saaidi | A. Aghamohammadi, Kh. Saaidi, M. R.Abolhasani, A.Vajdi | Spherical Symmetric Solution in f(R) Model Around Charged Black Hole | null | Int.J.Theor.Phys.49:709,2010 | 10.1007/s10773-010-0250-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A static, asymptotically flat, spherically symmetric solutions is
investigated in f(R) theories of gravity for a charged black hole. We have
studied the weak field limit of f(R) gravity for the some f(R) model such as
f(R) = R + epsilon h(R). In particular, weconsider the case lim_{R =0} {h(R)/
dh(R)/dR}=0 and find t... | [
{
"created": "Sat, 23 Jan 2010 12:14:25 GMT",
"version": "v1"
}
] | 2011-09-13 | [
[
"Aghamohammadi",
"A.",
""
],
[
"Saaidi",
"Kh.",
""
],
[
"Abolhasani",
"M. R.",
""
],
[
"Vajdi",
"A.",
""
]
] | A static, asymptotically flat, spherically symmetric solutions is investigated in f(R) theories of gravity for a charged black hole. We have studied the weak field limit of f(R) gravity for the some f(R) model such as f(R) = R + epsilon h(R). In particular, weconsider the case lim_{R =0} {h(R)/ dh(R)/dR}=0 and find the... |
1907.10694 | Alexander Oliveros < | A. Oliveros and Hern\'an E. Noriega | Constant-roll inflation driven by a scalar field with non-minimal
derivative coupling | 15 pages, 6 figures, accepted for publication in Int. J. Mod. Phys. D | null | 10.1142/S0218271819501591 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we study constant-roll inflation driven by a scalar field with
non-minimal derivative coupling to gravity, via the Einstein tensor. This model
contains a free parameter, $\eta$, which quantifies the non-minimal derivative
coupling and a parameter $\alpha$ which characterize the constant-roll
condition. ... | [
{
"created": "Wed, 24 Jul 2019 20:06:36 GMT",
"version": "v1"
}
] | 2019-10-23 | [
[
"Oliveros",
"A.",
""
],
[
"Noriega",
"Hernán E.",
""
]
] | In this work, we study constant-roll inflation driven by a scalar field with non-minimal derivative coupling to gravity, via the Einstein tensor. This model contains a free parameter, $\eta$, which quantifies the non-minimal derivative coupling and a parameter $\alpha$ which characterize the constant-roll condition. In... |
gr-qc/9310004 | Khatsymovsky | V. Khatsymovsky | Regge calculus in the canonical form | 24 pages,Plain LaTeX,BINP 93-42 | Gen.Rel.Grav. 27 (1995) 583-603 | 10.1007/BF02108063 | null | gr-qc | null | (3+1) (continuous time) Regge calculus is reduced to Hamiltonian form. The
constraints are classified, classical and quantum consequences are discussed.
As basic variables connection matrices and antisymmetric area tensors are used
supplemented with appropriate bilinear constraints. In these variables the
action can ... | [
{
"created": "Sun, 3 Oct 1993 12:32:50 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Khatsymovsky",
"V.",
""
]
] | (3+1) (continuous time) Regge calculus is reduced to Hamiltonian form. The constraints are classified, classical and quantum consequences are discussed. As basic variables connection matrices and antisymmetric area tensors are used supplemented with appropriate bilinear constraints. In these variables the action can be... |
2103.14582 | Roberto Casadio | Roberto Casadio | A quantum bound on the compactness | 8 pages, LaTeX, one figure, references and comments added | null | 10.1140/epjc/s10052-021-09980-2 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We present a simple quantum description of the gravitational collapse of a
ball of dust which excludes those states whose width is arbitrarily smaller
than the gravitational radius of the matter source and supports the conclusion
that black holes are macroscopic extended objects. We also comment briefly on
the releva... | [
{
"created": "Fri, 26 Mar 2021 16:44:05 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Apr 2021 05:53:06 GMT",
"version": "v2"
},
{
"created": "Tue, 8 Jun 2021 15:42:04 GMT",
"version": "v3"
},
{
"created": "Tue, 28 Dec 2021 15:35:11 GMT",
"version": "v4"
}
] | 2022-01-26 | [
[
"Casadio",
"Roberto",
""
]
] | We present a simple quantum description of the gravitational collapse of a ball of dust which excludes those states whose width is arbitrarily smaller than the gravitational radius of the matter source and supports the conclusion that black holes are macroscopic extended objects. We also comment briefly on the relevanc... |
gr-qc/9908045 | Don Marolf | Donald Marolf | String/M-branes for Relativists | 50 pages, 6 figures, For the Proceedings of the 3rd Mexican School on
Gravitation and Mathematical Physics (Mazatl\'an, Mexico, Nov. 1998)
Kaluza-Klein reduction or 3-form corrected | null | null | SU-GP-99/8-3 | gr-qc hep-th | null | These notes present an introduction to branes in ten and eleven dimensional
supergravity and string/M-theory which is geared to an audience of traditional
relativists, especially graduate students and others with little background in
supergravity. They are designed as a tutorial and not as a thorough review of
the su... | [
{
"created": "Mon, 16 Aug 1999 18:17:11 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Dec 1999 04:53:23 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Marolf",
"Donald",
""
]
] | These notes present an introduction to branes in ten and eleven dimensional supergravity and string/M-theory which is geared to an audience of traditional relativists, especially graduate students and others with little background in supergravity. They are designed as a tutorial and not as a thorough review of the subj... |
2112.08413 | Carlos Palenzuela | C. Palenzuela, R. Aguilera-Miret, F. Carrasco, R. Ciolfi, J.V.
Kalinani, W. Kastaun, B. Mi\~nano and D. Vigan\`o | Turbulent magnetic field amplification in binary neutron star mergers | 22 pages, 17 figures, version matching the published article | null | 10.1103/PhysRevD.106.023013 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Magnetic fields are expected to play a key role in the dynamics and the
ejection mechanisms that accompany the merger of two neutron stars. General
relativistic magnetohydrodynamic (MHD) simulations offer a unique opportunity
to unravel the details of the ongoing physical processes. Nevertheless, current
numerical st... | [
{
"created": "Wed, 15 Dec 2021 19:02:31 GMT",
"version": "v1"
},
{
"created": "Sun, 3 Jul 2022 07:41:52 GMT",
"version": "v2"
}
] | 2022-07-27 | [
[
"Palenzuela",
"C.",
""
],
[
"Aguilera-Miret",
"R.",
""
],
[
"Carrasco",
"F.",
""
],
[
"Ciolfi",
"R.",
""
],
[
"Kalinani",
"J. V.",
""
],
[
"Kastaun",
"W.",
""
],
[
"Miñano",
"B.",
""
],
[
"Viganò",
... | Magnetic fields are expected to play a key role in the dynamics and the ejection mechanisms that accompany the merger of two neutron stars. General relativistic magnetohydrodynamic (MHD) simulations offer a unique opportunity to unravel the details of the ongoing physical processes. Nevertheless, current numerical stud... |
gr-qc/0601077 | Emanuele Berti | Emanuele Berti, Vitor Cardoso, Clifford M. Will | Considerations on the excitation of black hole quasinormal modes | 11 pages, 2 figures, proceedings of the 7th International Conference
of the Hellenic Astronomical Society. Complements section VB of gr-qc/0512160 | null | 10.1063/1.2348047 | null | gr-qc astro-ph | null | We provide some considerations on the excitation of black hole quasinormal
modes (QNMs) in different physical scenarios. Considering a simple model in
which a stream of particles accretes onto a black hole, we show that resonant
QNM excitation by hyperaccretion requires a significant amount of fine-tuning,
and is qui... | [
{
"created": "Wed, 18 Jan 2006 18:57:13 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Berti",
"Emanuele",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Will",
"Clifford M.",
""
]
] | We provide some considerations on the excitation of black hole quasinormal modes (QNMs) in different physical scenarios. Considering a simple model in which a stream of particles accretes onto a black hole, we show that resonant QNM excitation by hyperaccretion requires a significant amount of fine-tuning, and is quite... |
1910.00315 | Tigran Tchrakian | D.H. Tchrakian | A remark on black holes of Chern-Simons gravities in $2n+1$ dimensions:
$n=1,2,3$ | 8 pages | null | 10.1142/S0217751X20500220 | DIAS-STP-19-07 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that Chern-Simons gravities in $2n+1$ dimensions admit solutions
described by the same lapse function which describes the BTZ black hole in the
$n=1$ case. This has been carried out explicitly for $n=1,2,3$. Moreover, it is
seen that these solutions are unique.
| [
{
"created": "Tue, 1 Oct 2019 11:47:38 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Oct 2019 10:13:43 GMT",
"version": "v2"
},
{
"created": "Wed, 5 Feb 2020 14:16:52 GMT",
"version": "v3"
},
{
"created": "Fri, 28 Feb 2020 12:15:43 GMT",
"version": "v4"
}
] | 2020-04-15 | [
[
"Tchrakian",
"D. H.",
""
]
] | It is shown that Chern-Simons gravities in $2n+1$ dimensions admit solutions described by the same lapse function which describes the BTZ black hole in the $n=1$ case. This has been carried out explicitly for $n=1,2,3$. Moreover, it is seen that these solutions are unique. |
gr-qc/0511132 | Edgard Casal de Rey Neto | Edgard Casal de Rey Neto | Braneworld with Induced Axial Symmetry | 3 pages, one figure, typos corrected, to apear in the special issue
of Brazilian Journal of Physics dedicated to the conference 100 years of
relativity, Sao Paulo, Brazil, 2005 | Braz.J.Phys. 35 (2005) 1131-1132 | null | null | gr-qc hep-th | null | We take arbitrary gravitational perturbations of a 5d spacetime and reduce it
to the form an axially symmetric warped braneworld. Then, we write the filed
equations for the linearized gravity perturbations. We obtain the equations
that describes the graviton, gravivector and the graviscalar fluctuations and
analyse t... | [
{
"created": "Thu, 24 Nov 2005 12:17:49 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Dec 2005 13:09:27 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Neto",
"Edgard Casal de Rey",
""
]
] | We take arbitrary gravitational perturbations of a 5d spacetime and reduce it to the form an axially symmetric warped braneworld. Then, we write the filed equations for the linearized gravity perturbations. We obtain the equations that describes the graviton, gravivector and the graviscalar fluctuations and analyse the... |
0801.3407 | Serge Reynaud | Serge Reynaud and Marc-Thierry Jaekel | Tests of general relativity in the solar system | Notes of a lecture given during the International School of Physics
Enrico Fermi on Atom Optics and Space Physics (Varenna, July 2007) | Proceedings of the International School of Physics "Enrico Fermi"
(2009) Volume 168: Atom Optics and Space Physics pp 203--217 | 10.3254/978-1-58603-990-5-203 | null | gr-qc astro-ph quant-ph | null | Tests of gravity performed in the solar system show a good agreement with
general relativity. The latter is however challenged by observations at larger,
galactic and cosmic, scales which are presently cured by introducing "dark
matter" or "dark energy". A few measurements in the solar system, particularly
the so-cal... | [
{
"created": "Tue, 22 Jan 2008 16:33:26 GMT",
"version": "v1"
}
] | 2023-04-14 | [
[
"Reynaud",
"Serge",
""
],
[
"Jaekel",
"Marc-Thierry",
""
]
] | Tests of gravity performed in the solar system show a good agreement with general relativity. The latter is however challenged by observations at larger, galactic and cosmic, scales which are presently cured by introducing "dark matter" or "dark energy". A few measurements in the solar system, particularly the so-calle... |
gr-qc/0611142 | Luc Blanchet | Luc Blanchet | General Relativistic Dynamics of Compact Binary Systems | 13 pages, to appear in the special issue of the Comptes rendus de
l'Academie des Sciences de Paris on "Observations of black holes and extreme
gravitational events", edited by Daniel Rouan | ComptesRendusPhysique8:57-68,2007 | 10.1016/j.crhy.2006.11.004 | null | gr-qc | null | The equations of motion of compact binary systems have been derived in the
post-Newtonian (PN) approximation of general relativity. The current level of
accuracy is 3.5PN order. The conservative part of the equations of motion
(neglecting the radiation reaction damping terms) is deducible from a
generalized Lagrangia... | [
{
"created": "Mon, 27 Nov 2006 18:54:59 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Blanchet",
"Luc",
""
]
] | The equations of motion of compact binary systems have been derived in the post-Newtonian (PN) approximation of general relativity. The current level of accuracy is 3.5PN order. The conservative part of the equations of motion (neglecting the radiation reaction damping terms) is deducible from a generalized Lagrangian ... |
gr-qc/0311011 | Daniel Grumiller | D. Grumiller | Deformations of the Schwarzschild Black Hole | 6 pages, 3 figures, invited contribution to the QG1 session at MGX,
v2: updated affiliation | null | null | ESI-1404, TUW-03-34 | gr-qc astro-ph hep-th | null | Due to its large number of symmetries the Schwarzschild Black Hole can be
described by a specific two-dimensional dilaton gravity model. After reviewing
classical, semi-classical and quantum properties and a brief discussion of
virtual black holes deformations are studied: the first part is devoted to
deformations of... | [
{
"created": "Tue, 4 Nov 2003 18:43:59 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Dec 2003 10:18:28 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Grumiller",
"D.",
""
]
] | Due to its large number of symmetries the Schwarzschild Black Hole can be described by a specific two-dimensional dilaton gravity model. After reviewing classical, semi-classical and quantum properties and a brief discussion of virtual black holes deformations are studied: the first part is devoted to deformations of t... |
2004.03912 | Masroor C. Pookkillath | Masroor C. Pookkillath, Antonio De Felice, Alexei A. Starobinsky | Anisotropic instability in a higher order gravity theory | 15 pages, 2 figures, accepted by JCAP, matches with accepted version | JCAP07(2020)041 | 10.1088/1475-7516/2020/07/041 | YITP-20-43 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a metric cubic gravity theory considering odd-parity modes of linear
inhomogeneous perturbations on a spatially homogeneous Bianchi type I manifold
close to the isotropic de Sitter spacetime. We show that in the regime of small
anisotropy, the theory possesses new degrees of freedom compared to General
Relat... | [
{
"created": "Wed, 8 Apr 2020 09:53:09 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Jul 2020 09:11:28 GMT",
"version": "v2"
}
] | 2020-07-20 | [
[
"Pookkillath",
"Masroor C.",
""
],
[
"De Felice",
"Antonio",
""
],
[
"Starobinsky",
"Alexei A.",
""
]
] | We study a metric cubic gravity theory considering odd-parity modes of linear inhomogeneous perturbations on a spatially homogeneous Bianchi type I manifold close to the isotropic de Sitter spacetime. We show that in the regime of small anisotropy, the theory possesses new degrees of freedom compared to General Relativ... |
1109.6798 | J. A. de Freitas Pacheco | J.A. de Freitas Pacheco | Relativistic Accretion into a Reissner-Nordstr\"om Black Hole Revisited | 13 pages - Accepted for publication in Journal of Thermodynamics | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The accretion of relativistic and non-relativistic fluids into a
Reissner-Nordstr\"om black hole is revisited. The position of the critical
point, the flow velocity at this point and the accretion rate are only slightly
affected with respect to the Schwarzschild case when the fluid is
non-relativistic. On the contrar... | [
{
"created": "Fri, 30 Sep 2011 11:39:02 GMT",
"version": "v1"
}
] | 2011-10-03 | [
[
"Pacheco",
"J. A. de Freitas",
""
]
] | The accretion of relativistic and non-relativistic fluids into a Reissner-Nordstr\"om black hole is revisited. The position of the critical point, the flow velocity at this point and the accretion rate are only slightly affected with respect to the Schwarzschild case when the fluid is non-relativistic. On the contrary,... |
2310.08518 | Horacio Santana Vieira | M. Abu-Saleem, H. S. Vieira, L. H. C. Borges | On the five-dimensional non-extremal Reissner-Nordstr\"{o}m black hole:
Retractions and scalar quasibound states | 17 pages, 4 figures. Matches published version in Universe | Universe 10, 267 (2024) | 10.3390/universe10060267 | null | gr-qc math.GT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we examine the role played by topology, and some specific
boundary conditions as well, on the physics of a higher-dimensional black hole.
We analyze the line element of a five-dimensional non-extremal
Reissner-Nordstr\"{o}m black hole to obtain a new family of subspaces that are
types of strong retract... | [
{
"created": "Thu, 12 Oct 2023 17:11:21 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Jul 2024 20:31:25 GMT",
"version": "v2"
}
] | 2024-07-17 | [
[
"Abu-Saleem",
"M.",
""
],
[
"Vieira",
"H. S.",
""
],
[
"Borges",
"L. H. C.",
""
]
] | In this paper, we examine the role played by topology, and some specific boundary conditions as well, on the physics of a higher-dimensional black hole. We analyze the line element of a five-dimensional non-extremal Reissner-Nordstr\"{o}m black hole to obtain a new family of subspaces that are types of strong retractio... |
2311.09921 | Ronaldas Macas | Ronaldas Macas, Andrew Lundgren, Gregory Ashton | Revisiting the evidence for precession in GW200129 with machine learning
noise mitigation | Updating with the journal-reviewed version. 8 pages, 6 figures. Data
frame available at DOI: 10.5281/zenodo.10143337 | Phys. Rev. D 109, 062006 (2024) | 10.1103/PhysRevD.109.062006 | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | GW200129 is claimed to be the first-ever observation of the spin-disk orbital
precession detected with gravitational waves (GWs) from an individual binary
system. However, this claim warrants a cautious evaluation because the GW event
coincided with a broadband noise disturbance in LIGO Livingston caused by the
45 MH... | [
{
"created": "Thu, 16 Nov 2023 14:21:11 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Mar 2024 08:43:28 GMT",
"version": "v2"
}
] | 2024-03-26 | [
[
"Macas",
"Ronaldas",
""
],
[
"Lundgren",
"Andrew",
""
],
[
"Ashton",
"Gregory",
""
]
] | GW200129 is claimed to be the first-ever observation of the spin-disk orbital precession detected with gravitational waves (GWs) from an individual binary system. However, this claim warrants a cautious evaluation because the GW event coincided with a broadband noise disturbance in LIGO Livingston caused by the 45 MHz ... |
0708.0883 | Carlo Rovelli | Emanuele Alesci, Carlo Rovelli | The complete LQG propagator: I. Difficulties with the Barrett-Crane
vertex | 31 pages | Phys.Rev.D76:104012,2007 | 10.1103/PhysRevD.76.104012 | null | gr-qc | null | Some components of the graviton two-point function have been recently
computed in the context of loop quantum gravity, using the spinfoam
Barrett-Crane vertex. We complete the calculation of the remaining components.
We find that, under our assumptions, the Barrett-Crane vertex does not yield
the correct long distanc... | [
{
"created": "Tue, 7 Aug 2007 07:00:16 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Alesci",
"Emanuele",
""
],
[
"Rovelli",
"Carlo",
""
]
] | Some components of the graviton two-point function have been recently computed in the context of loop quantum gravity, using the spinfoam Barrett-Crane vertex. We complete the calculation of the remaining components. We find that, under our assumptions, the Barrett-Crane vertex does not yield the correct long distance ... |
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