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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1111.1071 | Luis Herrera | L. Herrera, A. Di Prisco and J. Iba\~nez | On the Role of Electric Charge and Cosmological Constant in Structure
Scalars | 5 pages Latex. Published in Phys. Rev. D. Some typos corrected | Phys. Rev. D84,107501, (2011) | 10.1103/PhysRevD.84.107501 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The physical meaning of structure scalars is analyzed for charged dissipative
spherical fluids and for neutral dust in the presence of cosmological constant.
The role played by such factors in the structure scalars is clearly brought out
and physical consequences are discussed. Particular attention needs to be paid
t... | [
{
"created": "Fri, 4 Nov 2011 08:58:45 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Nov 2011 16:19:38 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"Herrera",
"L.",
""
],
[
"Di Prisco",
"A.",
""
],
[
"Ibañez",
"J.",
""
]
] | The physical meaning of structure scalars is analyzed for charged dissipative spherical fluids and for neutral dust in the presence of cosmological constant. The role played by such factors in the structure scalars is clearly brought out and physical consequences are discussed. Particular attention needs to be paid to ... |
1303.5484 | Maurizio Gasperini | L. Cosmai, G. Fanizza, M. Gasperini and L. Tedesco | Discriminating different models of luminosity-redshift distribution | 11 pages, 6 figures. To appear in Class. Quantum Grav | null | 10.1088/0264-9381/30/9/095011 | BA-TH/672-13 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The beginning of the cosmological phase bearing the direct kinematic imprints
of supernovae dimming may significantly vary within different models of
late-time cosmology, even if such models are able to fit present SNe data at a
comparable level of statistical accuracy. This effect -- useful in principle to
discrimin... | [
{
"created": "Thu, 21 Mar 2013 23:34:54 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Cosmai",
"L.",
""
],
[
"Fanizza",
"G.",
""
],
[
"Gasperini",
"M.",
""
],
[
"Tedesco",
"L.",
""
]
] | The beginning of the cosmological phase bearing the direct kinematic imprints of supernovae dimming may significantly vary within different models of late-time cosmology, even if such models are able to fit present SNe data at a comparable level of statistical accuracy. This effect -- useful in principle to discriminat... |
gr-qc/9304039 | null | J.J.Halliwell | Quantum-Mechanical Histories and the Uncertainty Principle:
I.Information-Theoretic Inequalities | 40 pages (revised uncorrupted version), Imperial College Preprint IC
92-93/26 | Phys.Rev. D48 (1993) 2739-2752 | 10.1103/PhysRevD.48.2739 | null | gr-qc cond-mat hep-th | null | This paper is generally concerned with understanding how the uncertainty
principle arises in formulations of quantum mechanics, such as the decoherent
histories approach, whose central goal is the assignment of probabilities to
histories. We first consider histories characterized by position or momentum
projections a... | [
{
"created": "Tue, 27 Apr 1993 11:11:00 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Apr 1993 10:42:05 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Halliwell",
"J. J.",
""
]
] | This paper is generally concerned with understanding how the uncertainty principle arises in formulations of quantum mechanics, such as the decoherent histories approach, whose central goal is the assignment of probabilities to histories. We first consider histories characterized by position or momentum projections at ... |
0910.5591 | Evan Goetz | E. Goetz, P. Kalmus, S. Erickson, R. L. Savage Jr., G. Gonzalez, K.
Kawabe, M. Landry, S. Marka, B. O'Reilly, K. Riles, D. Sigg and P. Willems | Precise calibration of LIGO test mass actuators using photon radiation
pressure | 13 pages, 6 figures, accepted by Classical and Quantum Gravity | Class.Quant.Grav.26:245011,2009 | 10.1088/0264-9381/26/24/245011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Precise calibration of kilometer-scale interferometric gravitational wave
detectors is crucial for source localization and waveform reconstruction. A
technique that uses the radiation pressure of a power-modulated auxiliary laser
to induce calibrated displacements of one of the ~10 kg arm cavity mirrors, a
so-called ... | [
{
"created": "Thu, 29 Oct 2009 15:33:33 GMT",
"version": "v1"
}
] | 2010-02-23 | [
[
"Goetz",
"E.",
""
],
[
"Kalmus",
"P.",
""
],
[
"Erickson",
"S.",
""
],
[
"Savage",
"R. L.",
"Jr."
],
[
"Gonzalez",
"G.",
""
],
[
"Kawabe",
"K.",
""
],
[
"Landry",
"M.",
""
],
[
"Marka",
"S.",
... | Precise calibration of kilometer-scale interferometric gravitational wave detectors is crucial for source localization and waveform reconstruction. A technique that uses the radiation pressure of a power-modulated auxiliary laser to induce calibrated displacements of one of the ~10 kg arm cavity mirrors, a so-called ph... |
1912.03149 | Kirill Bronnikov | K.A. Bronnikov | Comment on "Linear superposition of regular black hole solutions of
Einstein nonlinear electrodynamics" | 4 pages, no figures | Phys. Rev. D 101, 128501 (2020) | 10.1103/PhysRevD.101.128501 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is argued that in the paper by A.A. Garcia-Diaz and G. Gutierrez-Cano
[Phys. Rev. D 100, 064068 (2019)] on nonlinear electrodynamics coupled to
general relativity, along with some interesting results and useful
observations, many statements are either inaccurate or incomplete. In
particular, the authors only consi... | [
{
"created": "Fri, 6 Dec 2019 14:28:05 GMT",
"version": "v1"
}
] | 2020-07-01 | [
[
"Bronnikov",
"K. A.",
""
]
] | It is argued that in the paper by A.A. Garcia-Diaz and G. Gutierrez-Cano [Phys. Rev. D 100, 064068 (2019)] on nonlinear electrodynamics coupled to general relativity, along with some interesting results and useful observations, many statements are either inaccurate or incomplete. In particular, the authors only conside... |
gr-qc/0009097 | Marcelo Alves | M.Alves (F.U.Rio de Janeiro) and V.B.Bezerra (F.U.Paraiba) | Dilaton Gravity with a Non-minmally Coupled Scalar Field | null | Int.J.Mod.Phys. D9 (2000) 697-704 | 10.1142/S0218271800000815 | null | gr-qc hep-th | null | We discuss the two-dimensional dilaton gravity with a scalar field as the
source matter. The coupling between the gravity and the scalar, massless, field
is presented in an unusual form. We work out two examples of these couplings
and solutions with black-hole behaviour are discussed and compared with those
found in ... | [
{
"created": "Thu, 28 Sep 2000 17:58:23 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Alves",
"M.",
"",
"F.U.Rio de Janeiro"
],
[
"Bezerra",
"V. B.",
"",
"F.U.Paraiba"
]
] | We discuss the two-dimensional dilaton gravity with a scalar field as the source matter. The coupling between the gravity and the scalar, massless, field is presented in an unusual form. We work out two examples of these couplings and solutions with black-hole behaviour are discussed and compared with those found in th... |
1610.07788 | Diego Pavon | Jos\'e Pedro Mimoso and Diego Pav\'on | Considerations on the thermal equilibrium between matter and the cosmic
horizon | 4 pages, two columns, no figures, matches version published in the
Physical Review | PRD 94, 103507(2016) | 10.1103/PhysRevD.94.103507 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A common feature in the thermodynamic analysis of homogeneous and isotropic
world models is the assumption that the temperature of the fluids inside the
cosmic horizon (including dark energy) coincides with the temperature of the
latter, whether it be either the event or the apparent horizon. We examine up
to what ex... | [
{
"created": "Tue, 25 Oct 2016 08:45:52 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Nov 2016 09:36:16 GMT",
"version": "v2"
}
] | 2016-11-18 | [
[
"Mimoso",
"José Pedro",
""
],
[
"Pavón",
"Diego",
""
]
] | A common feature in the thermodynamic analysis of homogeneous and isotropic world models is the assumption that the temperature of the fluids inside the cosmic horizon (including dark energy) coincides with the temperature of the latter, whether it be either the event or the apparent horizon. We examine up to what exte... |
1107.0898 | Jonathan Luk | Jonathan Luk | On the Local Existence for the Characteristic Initial Value Problem in
General Relativity | null | null | null | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given a truncated incoming null cone and a truncated outgoing null cone
intersecting at a two sphere $S$ with smooth characteristic initial data, a
theorem of Rendall shows that the vacuum Einstein equations can be solved in a
small neighborhood of $S$ in the future of $S$. We show that in fact the vacuum
Einstein eq... | [
{
"created": "Tue, 5 Jul 2011 15:20:00 GMT",
"version": "v1"
}
] | 2011-07-06 | [
[
"Luk",
"Jonathan",
""
]
] | Given a truncated incoming null cone and a truncated outgoing null cone intersecting at a two sphere $S$ with smooth characteristic initial data, a theorem of Rendall shows that the vacuum Einstein equations can be solved in a small neighborhood of $S$ in the future of $S$. We show that in fact the vacuum Einstein equa... |
gr-qc/0302061 | Kashif Alvi | Kashif Alvi | Note on ingoing coordinates for binary black holes | 5 pages, no figures | Phys.Rev. D67 (2003) 104006 | 10.1103/PhysRevD.67.104006 | null | gr-qc | null | In a previous paper, a binary black hole four-metric was presented in a
post-Newtonian corotating coordinate system valid only up to the holes'
apparent horizons. In this paper, I define an ingoing coordinate transformation
that extends this corotating coordinate system through the holes' horizons and
into their inte... | [
{
"created": "Fri, 14 Feb 2003 13:40:15 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Alvi",
"Kashif",
""
]
] | In a previous paper, a binary black hole four-metric was presented in a post-Newtonian corotating coordinate system valid only up to the holes' apparent horizons. In this paper, I define an ingoing coordinate transformation that extends this corotating coordinate system through the holes' horizons and into their interi... |
1806.09961 | Andreas G. A. Pithis | Joseph Ben Geloun and Alexander Kegeles and Andreas G. A. Pithis | Minimizers of the dynamical Boulatov model | closest to published version | Eur. Phys. J. C (2018) 78: 996 | 10.1140/epjc/s10052-018-6483-8 | KCL-PH-TH/2018-7 | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Euler-Lagrange equation of the dynamical Boulatov model which is
a simplicial model for 3d Euclidean quantum gravity augmented by a
Laplace-Beltrami operator. We provide all its solutions on the space of left
and right invariant functions that render the interaction of the model an
equilateral tetrahedro... | [
{
"created": "Tue, 26 Jun 2018 13:18:37 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Dec 2018 16:08:44 GMT",
"version": "v2"
}
] | 2018-12-10 | [
[
"Geloun",
"Joseph Ben",
""
],
[
"Kegeles",
"Alexander",
""
],
[
"Pithis",
"Andreas G. A.",
""
]
] | We study the Euler-Lagrange equation of the dynamical Boulatov model which is a simplicial model for 3d Euclidean quantum gravity augmented by a Laplace-Beltrami operator. We provide all its solutions on the space of left and right invariant functions that render the interaction of the model an equilateral tetrahedron.... |
1904.12670 | Wei Dongdong | Dongdong Wei, Xinhe Meng and Bin Wang | Detecting the processes of colliding plane gravitational waves by
electromagnetic response signals | 9 pages, 25 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have considered how to detect the processes of plane
gravitational waves colliding. The degenerate Ferrari-Ibanez solution describes
the collision of plane gravitational waves with aligned linear polarization,
and the solution of the interaction region is Schwarzschild-like metric by
taking coordina... | [
{
"created": "Mon, 29 Apr 2019 12:56:51 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Jun 2019 11:57:42 GMT",
"version": "v2"
},
{
"created": "Thu, 26 Sep 2019 01:30:07 GMT",
"version": "v3"
}
] | 2019-09-27 | [
[
"Wei",
"Dongdong",
""
],
[
"Meng",
"Xinhe",
""
],
[
"Wang",
"Bin",
""
]
] | In this paper, we have considered how to detect the processes of plane gravitational waves colliding. The degenerate Ferrari-Ibanez solution describes the collision of plane gravitational waves with aligned linear polarization, and the solution of the interaction region is Schwarzschild-like metric by taking coordinate... |
2208.10562 | Anzhong Wang | Geeth Ongole, Hongchao Zhang, Tao Zhu, Anzhong Wang and Bin Wang | Dirac observables in the 4-dimensional phase space of Ashtekar's
variables and spherically symmetric loop quantum black holes | revetex4-1, 2 tables and 13 figures. To appear in Universe for the
Special Issue "Loop Quantum Gravity: A Themed Issue in Honor of Prof. Abhay
Ashtekar" | Universe 8 (2022) 543 | 10.3390/ universe8100543 | null | gr-qc math-ph math.MP quant-ph | http://creativecommons.org/licenses/by/4.0/ | In this paper, we study a proposal put forward recently by Bodendorfer, Mele
and M\"unch and Garc\'\i{}a-Quismondo and Marug\'an, in which the two
polymerization parameters of spherically symmetric black hole spacetimes are
the Dirac observables of the four-dimensional Ashtekar's variables. In this
model, black and w... | [
{
"created": "Mon, 22 Aug 2022 19:39:20 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Oct 2022 14:38:46 GMT",
"version": "v2"
}
] | 2022-10-21 | [
[
"Ongole",
"Geeth",
""
],
[
"Zhang",
"Hongchao",
""
],
[
"Zhu",
"Tao",
""
],
[
"Wang",
"Anzhong",
""
],
[
"Wang",
"Bin",
""
]
] | In this paper, we study a proposal put forward recently by Bodendorfer, Mele and M\"unch and Garc\'\i{}a-Quismondo and Marug\'an, in which the two polymerization parameters of spherically symmetric black hole spacetimes are the Dirac observables of the four-dimensional Ashtekar's variables. In this model, black and whi... |
gr-qc/9210005 | Terry Goldman | T. Goldman, J. P\'erez-Mercader, Fred Cooper and Michael Martin Nieto | The Dark Matter Problem in Light of Quantum Gravity | 13 pages, LaTeX, (3 figues, not included) | null | 10.1016/0370-2693(92)91132-S | LA-UR-92-2642 | gr-qc astro-ph hep-ph | null | We show how, by considering the cumulative effect of tiny quantum
gravitational fluctuations over very large distances, it may be possible to:
($a$) reconcile nucleosynthesis bounds on the density parameter of the Universe
with the predictions of inflationary cosmology, and ($b$) reproduce the
inferred variation of t... | [
{
"created": "Thu, 8 Oct 1992 03:47:44 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Goldman",
"T.",
""
],
[
"Pérez-Mercader",
"J.",
""
],
[
"Cooper",
"Fred",
""
],
[
"Nieto",
"Michael Martin",
""
]
] | We show how, by considering the cumulative effect of tiny quantum gravitational fluctuations over very large distances, it may be possible to: ($a$) reconcile nucleosynthesis bounds on the density parameter of the Universe with the predictions of inflationary cosmology, and ($b$) reproduce the inferred variation of the... |
2204.03093 | Etera R. Livine | Qian Chen, Etera R. Livine | Intertwiner Entanglement Excitation and Holonomy Operator | 35 pages | null | 10.1088/1361-6382/ac90aa | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the loop quantum gravity framework, spin network states carry entanglement
between quantum excitations of the geometry at different space points. This
intertwiner entanglement is gauge-invariant and comes from quantum
superposition of spins and intertwiners. Bipartite entanglement can be
interpreted as a witness o... | [
{
"created": "Wed, 6 Apr 2022 21:15:35 GMT",
"version": "v1"
}
] | 2022-10-19 | [
[
"Chen",
"Qian",
""
],
[
"Livine",
"Etera R.",
""
]
] | In the loop quantum gravity framework, spin network states carry entanglement between quantum excitations of the geometry at different space points. This intertwiner entanglement is gauge-invariant and comes from quantum superposition of spins and intertwiners. Bipartite entanglement can be interpreted as a witness of ... |
2312.09622 | Alexey Smirnov | Alexey L. Smirnov | The initial data problem for a traversable wormhole with interacting
mouths | 9 pages, 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this study, we consider the time-symmetric initial data problem for GR
minimally coupled with a phantom scalar field and a Maxwell field. The main
focus is on initial data sets describing two interacting mouths of the same
traversable wormhole. These data sets are similar in many respects to the
Misner initial dat... | [
{
"created": "Fri, 15 Dec 2023 09:04:24 GMT",
"version": "v1"
}
] | 2023-12-18 | [
[
"Smirnov",
"Alexey L.",
""
]
] | In this study, we consider the time-symmetric initial data problem for GR minimally coupled with a phantom scalar field and a Maxwell field. The main focus is on initial data sets describing two interacting mouths of the same traversable wormhole. These data sets are similar in many respects to the Misner initial data ... |
1611.03096 | Florian Hopfm\"uller | Florian Hopfm\"uller, Laurent Freidel | Gravity Degrees of Freedom on a Null Surface | 28 pages, 3 figures. Second version with minor edits | Phys. Rev. D 95, 104006 (2017) | 10.1103/PhysRevD.95.104006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A canonical analysis for general relativity is performed on a null surface
without fixing the diffeomorphism gauge, and the canonical pairs of
configuration and momentum variables are derived. Next to the well-known spin-2
pair, also spin-1 and spin-0 pairs are identified. The boundary action for a
null boundary segm... | [
{
"created": "Wed, 9 Nov 2016 21:13:49 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Nov 2016 17:29:04 GMT",
"version": "v2"
}
] | 2017-05-17 | [
[
"Hopfmüller",
"Florian",
""
],
[
"Freidel",
"Laurent",
""
]
] | A canonical analysis for general relativity is performed on a null surface without fixing the diffeomorphism gauge, and the canonical pairs of configuration and momentum variables are derived. Next to the well-known spin-2 pair, also spin-1 and spin-0 pairs are identified. The boundary action for a null boundary segmen... |
1809.00868 | Sanjib Dey | Sumeet Chougule, Sanjib Dey, Behnam Pourhassan, Mir Faizal | BTZ black holes in massive gravity | 11 pages | Eur. Phys. J. C (2018) 78:685 | 10.1140/epjc/s10052-018-6172-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze certain aspects of BTZ black holes in massive theory of gravity.
The black hole solution is obtained by using the Vainshtein and dRGT mechanism,
which is asymptotically AdS with an electric charge. We study the Hawking
radiation using the tunneling formalism as well as analyze the black hole
chemistry for ... | [
{
"created": "Tue, 4 Sep 2018 10:05:06 GMT",
"version": "v1"
}
] | 2018-09-05 | [
[
"Chougule",
"Sumeet",
""
],
[
"Dey",
"Sanjib",
""
],
[
"Pourhassan",
"Behnam",
""
],
[
"Faizal",
"Mir",
""
]
] | We analyze certain aspects of BTZ black holes in massive theory of gravity. The black hole solution is obtained by using the Vainshtein and dRGT mechanism, which is asymptotically AdS with an electric charge. We study the Hawking radiation using the tunneling formalism as well as analyze the black hole chemistry for su... |
gr-qc/0702039 | Matthew Pitkin | The LIGO Scientific Collaboration: B. Abbott, et al, M. Kramer and A.
G. Lyne | Upper limits on gravitational wave emission from 78 radio pulsars | 21 pages, published in Phys. Rev. D, corrected GEO600 sensitvity
curve in Figure 1 | Phys.Rev.D76:042001,2007 | 10.1103/PhysRevD.76.042001 | LIGO-P060011-05-Z | gr-qc astro-ph | null | We present upper limits on the gravitational wave emission from 78 radio
pulsars based on data from the third and fourth science runs of the LIGO and
GEO600 gravitational wave detectors. The data from both runs have been combined
coherently to maximise sensitivity. For the first time pulsars within binary
(or multipl... | [
{
"created": "Wed, 7 Feb 2007 14:53:58 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Apr 2007 10:47:08 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Jun 2007 09:06:22 GMT",
"version": "v3"
},
{
"created": "Thu, 26 Jul 2007 14:31:54 GMT",
"version": "v4"
},
{
"cre... | 2008-11-26 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"Abbott",
"B.",
""
],
[
"Kramer",
"M.",
""
],
[
"Lyne",
"A. G.",
""
]
] | We present upper limits on the gravitational wave emission from 78 radio pulsars based on data from the third and fourth science runs of the LIGO and GEO600 gravitational wave detectors. The data from both runs have been combined coherently to maximise sensitivity. For the first time pulsars within binary (or multiple)... |
1404.2684 | Shinji Tsujikawa | Shinji Tsujikawa | The effective field theory of inflation/dark energy and the Horndeski
theory | 39 pages, no figures, lecture note for the 7th Aegean Summer School,
Paros, 23-28 September, 2013 | Lect.Notes Phys. 892 (2015) 97-136 | 10.1007/978-3-319-10070-8_4 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effective field theory (EFT) of cosmological perturbations is a useful
framework to deal with the low-energy degrees of freedom present for inflation
and dark energy. We review the EFT for modified gravitational theories by
starting from the most general action in unitary gauge that involves the lapse
function an... | [
{
"created": "Thu, 10 Apr 2014 03:56:55 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Sep 2014 05:27:42 GMT",
"version": "v2"
}
] | 2014-11-13 | [
[
"Tsujikawa",
"Shinji",
""
]
] | The effective field theory (EFT) of cosmological perturbations is a useful framework to deal with the low-energy degrees of freedom present for inflation and dark energy. We review the EFT for modified gravitational theories by starting from the most general action in unitary gauge that involves the lapse function and ... |
1602.03460 | Antoine Folacci | Yves D\'ecanini, Antoine Folacci and Mohamed Ould El Hadj | Waveforms in massive gravity and neutralization of giant black hole
ringings | v1:We complete our work on resonant excitation of BHs in massive
gravity (see arXiv:1401.0321[gr-qc] and arXiv:1402.2481[gr-qc]) and discuss
more particularly the observability of giant ringings. v2:With additional
remarks concerning waveforms corresponding to the weak instability regime.
(To appear in PRD). v3... | Phys. Rev. D 93, 124027 (2016) | 10.1103/PhysRevD.93.124027 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A distorted black hole radiates gravitational waves in order to settle down
in a smoother geometry. During that relaxation phase, a characteristic damped
ringing is generated. It can be theoretically constructed from both the black
hole quasinormal frequencies (which govern its oscillating behavior and its
decay) and... | [
{
"created": "Wed, 10 Feb 2016 17:31:12 GMT",
"version": "v1"
},
{
"created": "Sat, 28 May 2016 06:02:45 GMT",
"version": "v2"
},
{
"created": "Tue, 14 Jun 2016 08:57:20 GMT",
"version": "v3"
}
] | 2016-06-22 | [
[
"Décanini",
"Yves",
""
],
[
"Folacci",
"Antoine",
""
],
[
"Hadj",
"Mohamed Ould El",
""
]
] | A distorted black hole radiates gravitational waves in order to settle down in a smoother geometry. During that relaxation phase, a characteristic damped ringing is generated. It can be theoretically constructed from both the black hole quasinormal frequencies (which govern its oscillating behavior and its decay) and t... |
1703.01521 | Thilina Shihan Weerathunga | Thilina S. Weerathunga, Soumya D. Mohanty | Performance of Particle Swarm Optimization on the fully-coherent all-sky
search for gravitational waves from compact binary coalescences | 14 pages, 8 figures, Corrected typos, Eq. 40 has been corrected | Phys. Rev. D 95, 124030 (2017) | 10.1103/PhysRevD.95.124030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Fully-coherent all-sky search for gravitational wave (GW) signals from the
coalescence of compact object binaries is a computationally expensive task.
Approximations, such as semi-coherent coincidence searches, are currently used
to circumvent the computational barrier with a concomitant loss in sensitivity.
We explo... | [
{
"created": "Sat, 4 Mar 2017 21:14:55 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Mar 2017 05:37:18 GMT",
"version": "v2"
},
{
"created": "Mon, 1 May 2017 23:21:55 GMT",
"version": "v3"
}
] | 2017-06-21 | [
[
"Weerathunga",
"Thilina S.",
""
],
[
"Mohanty",
"Soumya D.",
""
]
] | Fully-coherent all-sky search for gravitational wave (GW) signals from the coalescence of compact object binaries is a computationally expensive task. Approximations, such as semi-coherent coincidence searches, are currently used to circumvent the computational barrier with a concomitant loss in sensitivity. We explore... |
0801.2134 | Bahram Mashhoon | Bahram Mashhoon | Spin-Gravity Coupling | 10 pages, invited paper presented at the Mathisson Conference (17-20
October 2007, Warsaw, Poland), to appear in Acta Phys. Pol. B | Acta Phys.Polon.Supp.1:113-122,2008 | null | null | gr-qc astro-ph hep-th | null | Mathisson's spin-gravity coupling and its Larmor-equivalent interaction,
namely, the spin-rotation coupling are discussed. The study of the latter leads
to a critical examination of the basic role of locality in relativistic
physics. The nonlocal theory of accelerated systems is outlined and some of its
implications ... | [
{
"created": "Mon, 14 Jan 2008 18:59:33 GMT",
"version": "v1"
}
] | 2009-02-10 | [
[
"Mashhoon",
"Bahram",
""
]
] | Mathisson's spin-gravity coupling and its Larmor-equivalent interaction, namely, the spin-rotation coupling are discussed. The study of the latter leads to a critical examination of the basic role of locality in relativistic physics. The nonlocal theory of accelerated systems is outlined and some of its implications ar... |
2304.10422 | Bing Tang | Jiayu Xie, Jie Wang, Bing Tang | Circular motion and chaos bound of a charged particle near charged 4D
Einstein-Gauss-Bonnet-AdS black holes | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the circular motion and chaos bound of a charged particle near
4D charged AdS black holes in Einstein-Gauss-Bonnet gravity theory. By means of
the Jacobian matrix, the analytical form of the Lyapunov exponent of the
charged particle is constructed, which satisfies the upper bound when it is on
the even... | [
{
"created": "Thu, 20 Apr 2023 16:11:04 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Jun 2023 15:51:52 GMT",
"version": "v2"
}
] | 2023-06-16 | [
[
"Xie",
"Jiayu",
""
],
[
"Wang",
"Jie",
""
],
[
"Tang",
"Bing",
""
]
] | We investigate the circular motion and chaos bound of a charged particle near 4D charged AdS black holes in Einstein-Gauss-Bonnet gravity theory. By means of the Jacobian matrix, the analytical form of the Lyapunov exponent of the charged particle is constructed, which satisfies the upper bound when it is on the event ... |
1604.07306 | Lavinia Heisenberg | Lavinia Heisenberg and Alexandre Refregier | Cosmology in massive gravity with effective composite metric | 31 pages, 6 figures | null | 10.1088/1475-7516/2016/09/020 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is dedicated to scrutinizing the cosmology in massive gravity. A
matter field of the dark sector is coupled to an effective composite metric
while a standard matter field couples to the dynamical metric in the usual way.
For this purpose, we study the dynamical system of cosmological solutions by
using pha... | [
{
"created": "Mon, 25 Apr 2016 15:16:40 GMT",
"version": "v1"
}
] | 2016-09-21 | [
[
"Heisenberg",
"Lavinia",
""
],
[
"Refregier",
"Alexandre",
""
]
] | This paper is dedicated to scrutinizing the cosmology in massive gravity. A matter field of the dark sector is coupled to an effective composite metric while a standard matter field couples to the dynamical metric in the usual way. For this purpose, we study the dynamical system of cosmological solutions by using phase... |
1205.6751 | W. G. Unruh | W. G. Unruh | Irrotational, two-dimensional Surface waves in fluids | 14 pages. To appear in Analog Gravity-- Proceedings of the Como
Summer School 2011 ed D. Faccio et al, Springer-Velag | null | 10.1007/978-3-319-00266-8_4 | null | gr-qc physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The equations for waves on the surface of an irrotational incompressible
fluid are derived in the coordinates of the velocity potential/stream function.
The low frequency shallow water approximation for these waves is derived for a
varying bottom topography. Most importantly, the conserved norm for the surface
waves ... | [
{
"created": "Wed, 30 May 2012 16:49:13 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Unruh",
"W. G.",
""
]
] | The equations for waves on the surface of an irrotational incompressible fluid are derived in the coordinates of the velocity potential/stream function. The low frequency shallow water approximation for these waves is derived for a varying bottom topography. Most importantly, the conserved norm for the surface waves is... |
1304.1899 | Christian Corda Prof. | Christian Corda | Time-Dependent Schrodinger Equation for Black Hole Evaporation: no
Information Loss | 18 pages, definitive version accepted for publication in Annals of
Physics. Comments are welcome. The results in arXiv:1210.7747 have been
partially reviewed. Dedicated to the memory of the latter IFM Secretary
Franco Pettini | Ann. Phys. 353, 71 (2015) | 10.1016/j.aop.2014.11.002 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In 1976 S. Hawking claimed that "Because part of the information about the
state of the system is lost down the hole, the final situation is represented
by a density matrix rather than a pure quantum state" (Verbatim from ref. 2).
This was the starting point of the popular "black hole (BH) information
paradox". In a ... | [
{
"created": "Sat, 6 Apr 2013 15:06:53 GMT",
"version": "v1"
},
{
"created": "Wed, 22 May 2013 16:35:17 GMT",
"version": "v2"
},
{
"created": "Thu, 27 Jun 2013 12:02:57 GMT",
"version": "v3"
},
{
"created": "Wed, 9 Apr 2014 15:59:21 GMT",
"version": "v4"
},
{
"cre... | 2014-12-04 | [
[
"Corda",
"Christian",
""
]
] | In 1976 S. Hawking claimed that "Because part of the information about the state of the system is lost down the hole, the final situation is represented by a density matrix rather than a pure quantum state" (Verbatim from ref. 2). This was the starting point of the popular "black hole (BH) information paradox". In a se... |
gr-qc/9806053 | Alex Kaganovich | E.I.Guendelman and A.B.Kaganovich | Dominance of a Dynamical Measure and Disappearance of the Cosmological
Constant | 10 pages | null | null | null | gr-qc | null | We consider an action which consists of two terms: the first S_{1}=\int
L_{1}\Phi d^{4}x and the second S_{2}=\int L_{2}\sqrt{-g}d^{4}x where \Phi is a
measure which has to be determined dynamically. S_{1} satisfies the requirement
that the transformation L_{1}\to L_{1}+const does not effect equations of
motion. In t... | [
{
"created": "Thu, 11 Jun 1998 07:45:29 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Guendelman",
"E. I.",
""
],
[
"Kaganovich",
"A. B.",
""
]
] | We consider an action which consists of two terms: the first S_{1}=\int L_{1}\Phi d^{4}x and the second S_{2}=\int L_{2}\sqrt{-g}d^{4}x where \Phi is a measure which has to be determined dynamically. S_{1} satisfies the requirement that the transformation L_{1}\to L_{1}+const does not effect equations of motion. In the... |
1710.06605 | Mohammad Vahid Takook | M. V. Takook | Linear Gravity in de Sitter universe | 13 pages, | Iranian Physical Journal, 3-1, 1-8 (2009) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give in this paper an explicit construction of the covariant quantization
of the rank-two massless tensor field on de Sitter space (linear covariant
quantum gravity on a de Sitter background). The main ingredient of the
construction is an indecomposable representation of de Sitter group. We here
make the choice of... | [
{
"created": "Wed, 18 Oct 2017 07:40:02 GMT",
"version": "v1"
}
] | 2017-10-19 | [
[
"Takook",
"M. V.",
""
]
] | We give in this paper an explicit construction of the covariant quantization of the rank-two massless tensor field on de Sitter space (linear covariant quantum gravity on a de Sitter background). The main ingredient of the construction is an indecomposable representation of de Sitter group. We here make the choice of a... |
1607.03505 | Farook Rahaman | I. Radinschi, Farook Rahaman, Th. Grammenos, Sayeedul Islam | Einstein and M{\o}ller energy-momentum complexes for a new regular black
hole solution with a nonlinear electrodynamics source | New figures and minor changes. Accepted in Adv.High.Ener.Phys | null | 10.1155/2016/904930 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A study about the energy and momentum distributions of a new charged regular
black hole solution with a nonlinear electrodynamics source is presented. The
energy and momentum are calculated using the Einstein and M{\o}ller
energy-momentum complexes. The results show that in both pseudotensorial
prescriptions the expr... | [
{
"created": "Thu, 30 Jun 2016 15:38:36 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Sep 2016 08:31:40 GMT",
"version": "v2"
}
] | 2017-04-26 | [
[
"Radinschi",
"I.",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Grammenos",
"Th.",
""
],
[
"Islam",
"Sayeedul",
""
]
] | A study about the energy and momentum distributions of a new charged regular black hole solution with a nonlinear electrodynamics source is presented. The energy and momentum are calculated using the Einstein and M{\o}ller energy-momentum complexes. The results show that in both pseudotensorial prescriptions the expres... |
1103.0783 | Ghazal Geshnizjani | Jose Tomas Galvez Ghersi, Ghazal Geshnizjani, Federico Piazza, Sarah
Shandera | Eternal inflation and a thermodynamic treatment of Einstein's equations | 1 figure, matches the published version in JCAP | JCAP 1106:005,2011 | 10.1088/1475-7516/2011/06/005 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In pursuing the intriguing resemblance of the Einstein equations to
thermodynamic equations, most sharply seen in systems possessing horizons, we
suggest that eternal inflation of the stochastic type may be a fruitful
phenomenon to explore. We develop a thermodynamic first law for quasi-de Sitter
space, valid on the ... | [
{
"created": "Thu, 3 Mar 2011 21:04:50 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Sep 2011 21:46:31 GMT",
"version": "v2"
}
] | 2011-10-03 | [
[
"Ghersi",
"Jose Tomas Galvez",
""
],
[
"Geshnizjani",
"Ghazal",
""
],
[
"Piazza",
"Federico",
""
],
[
"Shandera",
"Sarah",
""
]
] | In pursuing the intriguing resemblance of the Einstein equations to thermodynamic equations, most sharply seen in systems possessing horizons, we suggest that eternal inflation of the stochastic type may be a fruitful phenomenon to explore. We develop a thermodynamic first law for quasi-de Sitter space, valid on the ho... |
0811.0299 | Mikhail Smolyakov | Mikhail N. Smolyakov | Submanifolds in space-time with unphysical extra dimensions, cosmology
and warped brane world models | 4 pages, LaTeX, equations (19) and (20) corrected | Class.Quant.Grav.25:238003,2008; Erratum-ibid.27:109801,2010 | 10.1088/0264-9381/25/23/238003 10.1088/0264-9381/27/10/109801 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The explicit coordinate transformations which show the equivalence between a
four-dimensional spatially flat cosmology and an appropriate submanifold in the
flat five-dimensional Minkowski space-time are presented. Analogous procedure
is made for the case of five-dimensional warped brane world models. Several
example... | [
{
"created": "Mon, 3 Nov 2008 13:59:25 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Apr 2010 23:46:48 GMT",
"version": "v2"
}
] | 2010-04-29 | [
[
"Smolyakov",
"Mikhail N.",
""
]
] | The explicit coordinate transformations which show the equivalence between a four-dimensional spatially flat cosmology and an appropriate submanifold in the flat five-dimensional Minkowski space-time are presented. Analogous procedure is made for the case of five-dimensional warped brane world models. Several examples ... |
1805.08644 | Cong Zhang | Cong Zhang, Jerzy Lewandowski, Yongge Ma | Towards the self-adjointness of a Hamiltonian operator in loop quantum
gravity | null | Phys. Rev. D 98, 086014 (2018) | 10.1103/PhysRevD.98.086014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Although the physical Hamiltonian operator can be constructed in the
deparameterized model of loop quantum gravity coupled to a scalar field, its
property is still unknown. This open issue is attacked in this paper by
considering an operator $\hat{H}_v$ representing the square of the physical
Hamiltonian operator act... | [
{
"created": "Tue, 22 May 2018 14:49:40 GMT",
"version": "v1"
},
{
"created": "Wed, 23 May 2018 07:32:38 GMT",
"version": "v2"
},
{
"created": "Sun, 28 Oct 2018 14:21:32 GMT",
"version": "v3"
},
{
"created": "Wed, 5 Jun 2019 14:26:30 GMT",
"version": "v4"
},
{
"cr... | 2019-12-17 | [
[
"Zhang",
"Cong",
""
],
[
"Lewandowski",
"Jerzy",
""
],
[
"Ma",
"Yongge",
""
]
] | Although the physical Hamiltonian operator can be constructed in the deparameterized model of loop quantum gravity coupled to a scalar field, its property is still unknown. This open issue is attacked in this paper by considering an operator $\hat{H}_v$ representing the square of the physical Hamiltonian operator actin... |
1109.5821 | Luca Fabbri | Stefano Vignolo, Luca Fabbri | Spin fluids in Bianchi-I f(R)-cosmology with torsion | 18 pages | Int. J. Geom. Meth. Mod. Phys. 9, 1250054 (2012) | 10.1142/S0219887812500545 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study Weyssenhoff spin fluids in Bianchi type-I cosmological models,
within the framework of torsional f(R)-gravity; the resulting field equations
are derived and discussed in both Jordan and Einstein frames, clarifying the
role played by the spin and the non-linearity of the gravitational Lagrangian
f(R) in gener... | [
{
"created": "Tue, 27 Sep 2011 09:48:31 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jul 2012 07:49:05 GMT",
"version": "v2"
}
] | 2012-08-01 | [
[
"Vignolo",
"Stefano",
""
],
[
"Fabbri",
"Luca",
""
]
] | We study Weyssenhoff spin fluids in Bianchi type-I cosmological models, within the framework of torsional f(R)-gravity; the resulting field equations are derived and discussed in both Jordan and Einstein frames, clarifying the role played by the spin and the non-linearity of the gravitational Lagrangian f(R) in generat... |
2311.08344 | Ernesto Contreras | A. Rueda, E. Contreras | Geodesic analysis and steady accretion on a traversable wormhole | null | Annals of Physics 459, 169540 (2023) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we analyze the behavior of light and matter as they pass near
and through a traversable wormhole. In particular, we study the trajectories of
massive and massless particles and the dust accretion around a traversable
wormhole previously reported in Eur. Phys. J. C \textbf{82} (2022) no.7, 605.
For massi... | [
{
"created": "Tue, 14 Nov 2023 17:40:57 GMT",
"version": "v1"
}
] | 2023-11-15 | [
[
"Rueda",
"A.",
""
],
[
"Contreras",
"E.",
""
]
] | In this work, we analyze the behavior of light and matter as they pass near and through a traversable wormhole. In particular, we study the trajectories of massive and massless particles and the dust accretion around a traversable wormhole previously reported in Eur. Phys. J. C \textbf{82} (2022) no.7, 605. For massive... |
2310.16799 | Andrew Laeuger | Andrew Laeuger, Brian Seymour, Yanbei Chen, Hang Yu | Measuring Supermassive Black Hole Properties via Gravitational Radiation
from Eccentrically Orbiting Stellar Mass Black Hole Binaries | 12 pages (main text excluding references and appendices), 11 figures,
submitted to PRD | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | There may exist stellar-mass binary black holes (BBH) which merge while
orbiting nearby a supermassive black hole (SMBH). In such a triple system, the
SMBH will modulate the gravitational waveform of the BBH through orbital
Doppler shift and de Sitter precession of the angular momentum. Future
space-based GW observat... | [
{
"created": "Wed, 25 Oct 2023 17:29:19 GMT",
"version": "v1"
}
] | 2023-10-26 | [
[
"Laeuger",
"Andrew",
""
],
[
"Seymour",
"Brian",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Yu",
"Hang",
""
]
] | There may exist stellar-mass binary black holes (BBH) which merge while orbiting nearby a supermassive black hole (SMBH). In such a triple system, the SMBH will modulate the gravitational waveform of the BBH through orbital Doppler shift and de Sitter precession of the angular momentum. Future space-based GW observator... |
1307.7859 | Amalaya Khurshudyan | Martiros Khurshudyan and Amalya Khurshudyan | Interacting varying Ghost Dark energy models in General Relativity | null | null | 10.1007/s10509-015-2341-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by recent developments in Cosmology we would like to consider an
extension of the Ghost DE which we will call as varying Ghost DE. Ghost DE like
other models was introduced recently as a possible way to explain accelerated
expansion of the Universe. For the phenomenological origin of the varying Ghost
dark ... | [
{
"created": "Tue, 30 Jul 2013 08:01:55 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Nov 2014 11:27:05 GMT",
"version": "v2"
}
] | 2015-07-28 | [
[
"Khurshudyan",
"Martiros",
""
],
[
"Khurshudyan",
"Amalya",
""
]
] | Motivated by recent developments in Cosmology we would like to consider an extension of the Ghost DE which we will call as varying Ghost DE. Ghost DE like other models was introduced recently as a possible way to explain accelerated expansion of the Universe. For the phenomenological origin of the varying Ghost dark en... |
1111.5558 | Gonzalo Olmo | Gonzalo J. Olmo | Palatini approach to bouncing cosmologies and DSR-like effects | 4 pages. Proceedings of Loops'11, Madrid. To appear in Journal of
Physics: Conference Series (JPCS) | null | 10.1088/1742-6596/360/1/012034 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that a quadratic gravitational Lagrangian in the Palatini
formulation is able to capture different aspects of quantum gravity
phenomenology in a single framework. In particular, in this theory field
excitations propagating with different energy-densities perceive different
background metrics, a fundamenta... | [
{
"created": "Wed, 23 Nov 2011 17:14:18 GMT",
"version": "v1"
}
] | 2015-06-03 | [
[
"Olmo",
"Gonzalo J.",
""
]
] | It is shown that a quadratic gravitational Lagrangian in the Palatini formulation is able to capture different aspects of quantum gravity phenomenology in a single framework. In particular, in this theory field excitations propagating with different energy-densities perceive different background metrics, a fundamental ... |
2104.05250 | Aurore Blelly | Aurore Blelly and J\'er\^ome Bobin and Herv\'e Moutarde | Sparse data inpainting for the recovery of Galactic-binary gravitational
wave signals from gapped data | null | null | 10.1093/mnras/stab3314 | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The forthcoming space-based gravitational wave observatory LISA will open a
new window for the measurement of galactic binaries, which will deliver
unprecedented information about these systems. However, the detection of
galactic binary gravitational wave signals is challenged by the presence of
gaps in the data. Whe... | [
{
"created": "Mon, 12 Apr 2021 07:34:43 GMT",
"version": "v1"
}
] | 2021-11-24 | [
[
"Blelly",
"Aurore",
""
],
[
"Bobin",
"Jérôme",
""
],
[
"Moutarde",
"Hervé",
""
]
] | The forthcoming space-based gravitational wave observatory LISA will open a new window for the measurement of galactic binaries, which will deliver unprecedented information about these systems. However, the detection of galactic binary gravitational wave signals is challenged by the presence of gaps in the data. Wheth... |
0709.0073 | Alejandro Cabo | Alejandro Cabo Bizet and Alejandro Cabo Montes de Oca | Static Universe model existing due to the Matter-Dark Energy coupling | 5 pages, 4 figures, a file of a different work was somehow uploaded
in the past version. We regret this happening | null | null | null | gr-qc | null | The work investigate a static, isotropic and almost homogeneous Universe
containing a real scalar field modeling the Dark-Energy (quintaessence)
interacting with pressureless matter. It is argued that the interaction between
matter and the Dark Energy, is essential for the very existence of the
considered solution. A... | [
{
"created": "Sat, 1 Sep 2007 19:37:43 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Sep 2007 12:41:13 GMT",
"version": "v2"
}
] | 2007-09-04 | [
[
"Bizet",
"Alejandro Cabo",
""
],
[
"de Oca",
"Alejandro Cabo Montes",
""
]
] | The work investigate a static, isotropic and almost homogeneous Universe containing a real scalar field modeling the Dark-Energy (quintaessence) interacting with pressureless matter. It is argued that the interaction between matter and the Dark Energy, is essential for the very existence of the considered solution. Ass... |
1008.3137 | Burkhard Kleihaus | Betti Hartmann, Burkhard Kleihaus, Jutta Kunz, Meike List | Rotating Boson Stars in 5 Dimensions | 17 pages, 6 figures | Phys.Rev.D82:084022,2010 | 10.1103/PhysRevD.82.084022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study rotating boson stars in five spacetime dimensions. The boson fields
consist of a complex doublet scalar field. Considering boson stars rotating in
two orthogonal planes with both angular momenta of equal magnitude, a special
ansatz for the boson field and the metric allows for solutions with nontrivial
depen... | [
{
"created": "Wed, 18 Aug 2010 17:19:48 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Hartmann",
"Betti",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
],
[
"List",
"Meike",
""
]
] | We study rotating boson stars in five spacetime dimensions. The boson fields consist of a complex doublet scalar field. Considering boson stars rotating in two orthogonal planes with both angular momenta of equal magnitude, a special ansatz for the boson field and the metric allows for solutions with nontrivial depende... |
1806.04547 | Sergei Kopeikin | Sergei M. Kopeikin (University of Missouri, USA) | Carter-like Constant of Motion in Newtonian Gravity is the Vinti
Integral | 2 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compare the Vinti integral of the classic celestial mechanics with a
conserved Carter-like integral of motion for an axially-symmetric body in the
Newtonian theory that has been recently found by Clifford Will. We demonstrate
that the integrals are identical. It sheds new light on the Newtonian limit of
the Kerr g... | [
{
"created": "Mon, 11 Jun 2018 17:07:05 GMT",
"version": "v1"
}
] | 2018-06-13 | [
[
"Kopeikin",
"Sergei M.",
"",
"University of Missouri, USA"
]
] | We compare the Vinti integral of the classic celestial mechanics with a conserved Carter-like integral of motion for an axially-symmetric body in the Newtonian theory that has been recently found by Clifford Will. We demonstrate that the integrals are identical. It sheds new light on the Newtonian limit of the Kerr geo... |
1207.4303 | Diego Rubiera-Garcia | Gonzalo J. Olmo and Diego Rubiera-Garcia | Nonsingular charged black holes \`{a} la Palatini | 10 single column pages | null | 10.1142/S0218271812500678 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We argue that the quantum nature of matter and gravity should lead to a
discretization of the allowed states of the matter confined in the interior of
black holes. To support and illustrate this idea, we consider a quadratic
extension of General Relativity formulated \`{a} la Palatini and show that
nonrotating, elect... | [
{
"created": "Wed, 18 Jul 2012 08:45:42 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Olmo",
"Gonzalo J.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
]
] | We argue that the quantum nature of matter and gravity should lead to a discretization of the allowed states of the matter confined in the interior of black holes. To support and illustrate this idea, we consider a quadratic extension of General Relativity formulated \`{a} la Palatini and show that nonrotating, electri... |
0804.4184 | Lawrence E. Kidder | Michael Boyle, Alessandra Buonanno, Lawrence E. Kidder, Abdul H.
Mrou\'e, Yi Pan, Harald P. Pfeiffer, Mark A. Scheel | High-accuracy numerical simulation of black-hole binaries: Computation
of the gravitational-wave energy flux and comparisons with post-Newtonian
approximants | modified non-Keplerian flux improves agreement with NR; updated error
bound of NR-PN comparison; added refs | Phys.Rev.D78:104020,2008 | 10.1103/PhysRevD.78.104020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Expressions for the gravitational wave (GW) energy flux and center-of-mass
energy of a compact binary are integral building blocks of post-Newtonian (PN)
waveforms. In this paper, we compute the GW energy flux and GW frequency
derivative from a highly accurate numerical simulation of an equal-mass,
non-spinning black... | [
{
"created": "Fri, 25 Apr 2008 22:21:05 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Oct 2008 15:16:51 GMT",
"version": "v2"
}
] | 2009-02-23 | [
[
"Boyle",
"Michael",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Kidder",
"Lawrence E.",
""
],
[
"Mroué",
"Abdul H.",
""
],
[
"Pan",
"Yi",
""
],
[
"Pfeiffer",
"Harald P.",
""
],
[
"Scheel",
"Mark A.",
""
]
... | Expressions for the gravitational wave (GW) energy flux and center-of-mass energy of a compact binary are integral building blocks of post-Newtonian (PN) waveforms. In this paper, we compute the GW energy flux and GW frequency derivative from a highly accurate numerical simulation of an equal-mass, non-spinning black h... |
gr-qc/0403022 | Robert T. Jantzen | Donato Bini, Christian Cherubini, Robert T. Jantzen, Giovanni Miniutti | The Simon and Simon-Mars Tensors for Stationary Einstein-Maxwell Fields | 12 pages, Latex IOP article class, no figures | Class.Quant.Grav. 21 (2004) 1987-1998 | 10.1088/0264-9381/21/8/005 | null | gr-qc | null | Modulo conventional scale factors, the Simon and Simon-Mars tensors are
defined for stationary vacuum spacetimes so that their equality follows from
the Bianchi identities of the second kind. In the nonvacuum case one can absorb
additional source terms into a redefinition of the Simon tensor so that this
equality is ... | [
{
"created": "Thu, 4 Mar 2004 15:59:12 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Bini",
"Donato",
""
],
[
"Cherubini",
"Christian",
""
],
[
"Jantzen",
"Robert T.",
""
],
[
"Miniutti",
"Giovanni",
""
]
] | Modulo conventional scale factors, the Simon and Simon-Mars tensors are defined for stationary vacuum spacetimes so that their equality follows from the Bianchi identities of the second kind. In the nonvacuum case one can absorb additional source terms into a redefinition of the Simon tensor so that this equality is ma... |
1112.4882 | Torsten Asselmeyer-Maluga | T. Asselmeyer-Maluga and J. Krol | Exotic Smoothness and Quantum Gravity II: exotic R^4, singularities and
cosmology | 23 pages, 5 figures, iopart style, important changes in the global
hyperbolicity part thanks to M. Sanchez | null | null | null | gr-qc hep-th math-ph math.GT math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Since the first work on exotic smoothness in physics, it was folklore to
assume a direct influence of exotic smoothness to quantum gravity. In the
second paper, we calculate the "smoothness structure" part of the path integral
in quantum gravity for the exotic R^4 as non-compact manifold. We discuss the
influence of ... | [
{
"created": "Tue, 20 Dec 2011 23:27:17 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Jan 2012 13:46:35 GMT",
"version": "v2"
}
] | 2012-01-19 | [
[
"Asselmeyer-Maluga",
"T.",
""
],
[
"Krol",
"J.",
""
]
] | Since the first work on exotic smoothness in physics, it was folklore to assume a direct influence of exotic smoothness to quantum gravity. In the second paper, we calculate the "smoothness structure" part of the path integral in quantum gravity for the exotic R^4 as non-compact manifold. We discuss the influence of th... |
2105.03485 | Stephanie Brown | Stephanie M. Brown and Collin D. Capano and Badri Krishnan | Using gravitational waves to distinguish between neutron stars and black
holes in compact binary mergers | 16 pages, 7 figures, 13 tables | ApJ 941 98 (2022) | 10.3847/1538-4357/ac98fe | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In August 2017, the first detection of a binary neutron star merger,
GW170817, made it possible to study neutron stars in compact binary systems
using gravitational waves. Despite being the loudest gravitational wave event
detected to date (in terms of signal-to-noise ratio), it was not possible to
unequivocally dete... | [
{
"created": "Fri, 7 May 2021 20:06:44 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jan 2023 18:43:44 GMT",
"version": "v2"
}
] | 2023-01-24 | [
[
"Brown",
"Stephanie M.",
""
],
[
"Capano",
"Collin D.",
""
],
[
"Krishnan",
"Badri",
""
]
] | In August 2017, the first detection of a binary neutron star merger, GW170817, made it possible to study neutron stars in compact binary systems using gravitational waves. Despite being the loudest gravitational wave event detected to date (in terms of signal-to-noise ratio), it was not possible to unequivocally determ... |
gr-qc/9407039 | Jonathan Halliwell | C.Anastopoulos and J.J.Halliwell | Generalized Uncertainty Relations and Long Time Limits for Quantum
Brownian Motion Models | 35 pages (plain Tex, revised to avoid corruption during file
transmission), Imperial College preprint 92-93/25 (1994) | Phys.Rev.D51:6870-6885,1995 | 10.1103/PhysRevD.51.6870 | null | gr-qc cond-mat | null | We study the time evolution of the reduced Wigner function for a class of
quantum Brownian motion models. We derive two generalized uncertainty
relations. The first consists of a sharp lower bound on the uncertainty
function, $U = (\Delta p)^2 (\Delta q)^2 $, after evolution for time $t$ in the
presence of an environ... | [
{
"created": "Tue, 26 Jul 1994 14:02:51 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jul 1994 15:22:19 GMT",
"version": "v2"
}
] | 2011-08-11 | [
[
"Anastopoulos",
"C.",
""
],
[
"Halliwell",
"J. J.",
""
]
] | We study the time evolution of the reduced Wigner function for a class of quantum Brownian motion models. We derive two generalized uncertainty relations. The first consists of a sharp lower bound on the uncertainty function, $U = (\Delta p)^2 (\Delta q)^2 $, after evolution for time $t$ in the presence of an environme... |
1406.4552 | Juan Margalef-Bentabol | Juan Margalef-Bentabol and Eduardo J.S. Villase\~nor | Topology of the Misner Space and its g-boundary | 17 pages, 13 images (new versions update bibliography and correct
some minor typos) | General Relativity and Gravitation, 46 (2014) 1755 | 10.1007/s10714-014-1755-6 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Misner space is a simplified $2$-dimensional model of the $4$-dimensional
Taub-NUT space that reproduces some of its pathological behaviours. In this
paper we provide an explicit base of the topology of the complete Misner space
$\mathbb{R}^{1,1}/boost$. Besides we prove that some parts of this space, that
behave... | [
{
"created": "Tue, 17 Jun 2014 22:36:28 GMT",
"version": "v1"
},
{
"created": "Sun, 6 Jul 2014 15:06:43 GMT",
"version": "v2"
},
{
"created": "Sun, 31 Aug 2014 13:10:09 GMT",
"version": "v3"
}
] | 2017-02-13 | [
[
"Margalef-Bentabol",
"Juan",
""
],
[
"Villaseñor",
"Eduardo J. S.",
""
]
] | The Misner space is a simplified $2$-dimensional model of the $4$-dimensional Taub-NUT space that reproduces some of its pathological behaviours. In this paper we provide an explicit base of the topology of the complete Misner space $\mathbb{R}^{1,1}/boost$. Besides we prove that some parts of this space, that behave l... |
gr-qc/0101048 | Luca Lusanna | Luca Lusanna (INFN, Firenze) | The Rest-Frame Instant Form of Metric Gravity | 106 pages, revtex file | Gen.Rel.Grav.33:1579-1696,2001 | 10.1023/A:1012297028267 | FI/TH-0010 | gr-qc | null | In a special class of globally hyperbolic, topologically trivial,
asymptotically flat at spatial infinity spacetimes selected by the requirement
of absence of supertranslations (compatible with Christodoulou-Klainermann
spacetimes) it is possible to define the {\it rest-frame instant form} of ADM
canonical gravity by... | [
{
"created": "Fri, 12 Jan 2001 16:13:43 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Lusanna",
"Luca",
"",
"INFN, Firenze"
]
] | In a special class of globally hyperbolic, topologically trivial, asymptotically flat at spatial infinity spacetimes selected by the requirement of absence of supertranslations (compatible with Christodoulou-Klainermann spacetimes) it is possible to define the {\it rest-frame instant form} of ADM canonical gravity by u... |
gr-qc/0001084 | Avraham E. Mayo | Avraham E. Mayo | Can one increase the luminosity of a Schwarzschild black hole? | 17 pages, REVTEX, Submitted to Physical Review D | null | null | null | gr-qc | null | We illustrate how Hawking's radiance from a Schwarzschild black hole is
modified by the electrostatic self-interaction of the emitted charged
particles. A W.K.B approximation shows that the probability for a
self-interacting charged particle to propagate from the interior to the
exterior of the horizon is increased r... | [
{
"created": "Wed, 26 Jan 2000 08:29:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mayo",
"Avraham E.",
""
]
] | We illustrate how Hawking's radiance from a Schwarzschild black hole is modified by the electrostatic self-interaction of the emitted charged particles. A W.K.B approximation shows that the probability for a self-interacting charged particle to propagate from the interior to the exterior of the horizon is increased rel... |
1104.4199 | G\'abor Zsolt T\'oth | Istvan Racz, Gabor Zsolt Toth | Numerical investigation of the late-time Kerr tails | 33 pages, 12 figures | Class.Quant.Grav.28:195003,2011 | 10.1088/0264-9381/28/19/195003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The late-time behavior of a scalar field on fixed Kerr background is examined
in a numerical framework incorporating the techniques of conformal
compactification and hyperbolic initial value formulation. The applied code is
1+(1+2) as it is based on the use of the spectral method in the angular
directions while in th... | [
{
"created": "Thu, 21 Apr 2011 08:14:02 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Sep 2011 13:12:49 GMT",
"version": "v2"
}
] | 2015-03-19 | [
[
"Racz",
"Istvan",
""
],
[
"Toth",
"Gabor Zsolt",
""
]
] | The late-time behavior of a scalar field on fixed Kerr background is examined in a numerical framework incorporating the techniques of conformal compactification and hyperbolic initial value formulation. The applied code is 1+(1+2) as it is based on the use of the spectral method in the angular directions while in the ... |
1907.01460 | Sebastian Ulbricht | Sebastian Ulbricht, Robert Alexander M\"uller, Andrey Surzhykov | Gravitational effects on geonium and free electron $\mathrm{g}_s$-factor
measurements in a Penning trap | 12 pages, 3 figures | Phys. Rev. D 100, 064029 (2019) | 10.1103/PhysRevD.100.064029 | null | gr-qc physics.atom-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a theoretical analysis of an electron confined by a Penning trap,
also known as geonium, that is affected by gravity. In particular, we
investigate the gravitational influence on the electron dynamics and the
electromagnetic field of the trap. We consider the special case of a
homogeneous gravitational fie... | [
{
"created": "Tue, 2 Jul 2019 15:44:27 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Sep 2019 11:25:55 GMT",
"version": "v2"
}
] | 2019-09-24 | [
[
"Ulbricht",
"Sebastian",
""
],
[
"Müller",
"Robert Alexander",
""
],
[
"Surzhykov",
"Andrey",
""
]
] | We present a theoretical analysis of an electron confined by a Penning trap, also known as geonium, that is affected by gravity. In particular, we investigate the gravitational influence on the electron dynamics and the electromagnetic field of the trap. We consider the special case of a homogeneous gravitational field... |
1510.03204 | Hongsheng Zhang | Hongsheng Zhang, Xin-Zhou Li | Ghost free massive gravity with singular reference metrics | 6pages, no figure | Phys. Rev. D 93, 124039 (2016) | 10.1103/PhysRevD.93.124039 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An auxiliary metric (reference metric) is inevitable in massive gravity
theory. In the scenario of gauge/gravity duality, a singular reference metric
corresponds to momentum dissipations, which describes the electric and heat
conductivity for normal conductors. We demonstrate in detail that the massive
gravity with s... | [
{
"created": "Mon, 12 Oct 2015 09:49:04 GMT",
"version": "v1"
}
] | 2016-06-22 | [
[
"Zhang",
"Hongsheng",
""
],
[
"Li",
"Xin-Zhou",
""
]
] | An auxiliary metric (reference metric) is inevitable in massive gravity theory. In the scenario of gauge/gravity duality, a singular reference metric corresponds to momentum dissipations, which describes the electric and heat conductivity for normal conductors. We demonstrate in detail that the massive gravity with sin... |
1405.2439 | Shin'ichi Nojiri | Shin'ichi Nojiri and Sergei D. Odintsov | Instabilities and Anti-Evaporation of Reissner-Nordstr\"om Black Holes
in modified $F(R)$ gravity | LaTeX 11 pages, no figure, publication data: Physics Letters B 735,
376-382 (2014) | null | 10.1016/j.physletb.2014.06.070 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the instabilities and related anti-evaporation of the extremal
Reissner-Nordstr\"om (RN) black hole in $F(R)$ gravity. It is remarkable that
the effective electric charge can be generated for some solutions of $F(R)$
gravity without electromagnetic field. The anti-evaporation effect occurs but
it emerges onl... | [
{
"created": "Sat, 10 May 2014 14:43:53 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Jul 2014 11:02:56 GMT",
"version": "v2"
},
{
"created": "Thu, 2 Oct 2014 08:56:09 GMT",
"version": "v3"
},
{
"created": "Sun, 5 Oct 2014 10:21:37 GMT",
"version": "v4"
}
] | 2015-06-19 | [
[
"Nojiri",
"Shin'ichi",
""
],
[
"Odintsov",
"Sergei D.",
""
]
] | We study the instabilities and related anti-evaporation of the extremal Reissner-Nordstr\"om (RN) black hole in $F(R)$ gravity. It is remarkable that the effective electric charge can be generated for some solutions of $F(R)$ gravity without electromagnetic field. The anti-evaporation effect occurs but it emerges only ... |
2109.00875 | Steffen Gielen | Bianca Dittrich, Steffen Gielen and Susanne Schander | Lorentzian quantum cosmology goes simplicial | 47 pages, 19 figures; v4: fixed a few typos, added some references to
figures | Class. Quant. Grav. 39 (2022), 035012 | 10.1088/1361-6382/ac42ad | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We employ the methods of discrete (Lorentzian) Regge calculus for analysing
Lorentzian quantum cosmology models with a special focus on discrete analogues
of the no-boundary proposal for the early universe. We use a simple 4-polytope,
a subdivided 4-polytope and shells of discrete 3-spheres as triangulations to
model... | [
{
"created": "Thu, 2 Sep 2021 12:36:19 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Sep 2021 18:59:31 GMT",
"version": "v2"
},
{
"created": "Mon, 13 Dec 2021 15:45:00 GMT",
"version": "v3"
},
{
"created": "Mon, 17 Jan 2022 12:08:31 GMT",
"version": "v4"
}
] | 2022-01-24 | [
[
"Dittrich",
"Bianca",
""
],
[
"Gielen",
"Steffen",
""
],
[
"Schander",
"Susanne",
""
]
] | We employ the methods of discrete (Lorentzian) Regge calculus for analysing Lorentzian quantum cosmology models with a special focus on discrete analogues of the no-boundary proposal for the early universe. We use a simple 4-polytope, a subdivided 4-polytope and shells of discrete 3-spheres as triangulations to model a... |
1603.02398 | Huaifan Li | Xiongying Guo, Huaifan Li, Lichun Zhang, Ren Zhao | The phase transition of higher dimensional Charged black holes | 15 pages,14 figures,references adjusted | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper,we have studied phase transitions of higher dimensional charge
black hole with spherical symmetry. we calculated the local energy and local
temperature, and find that these state parameters satisfy the first law of
thermodynamics. We analyze the critical behavior of black hole thermodynamic
system by ta... | [
{
"created": "Tue, 8 Mar 2016 07:09:32 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Apr 2016 09:19:44 GMT",
"version": "v2"
}
] | 2016-04-26 | [
[
"Guo",
"Xiongying",
""
],
[
"Li",
"Huaifan",
""
],
[
"Zhang",
"Lichun",
""
],
[
"Zhao",
"Ren",
""
]
] | In this paper,we have studied phase transitions of higher dimensional charge black hole with spherical symmetry. we calculated the local energy and local temperature, and find that these state parameters satisfy the first law of thermodynamics. We analyze the critical behavior of black hole thermodynamic system by taki... |
gr-qc/0510025 | Alexey Toporensky | A.V.Toporensky and P.V.Tretyakov | Recollapsing Bianchi I brane worlds | 9 pages, 4 figures, to appear in Gravitation and Cosmology | Grav.Cosmol. 11 (2005) 226-228 | null | null | gr-qc | null | We investigate the possibility for a flat Bianchi I brane Universe to
recollaps due to the presence of a negative "dark radiation" and an anisotropic
stress in the form of a homogeneous magnetic field, localized on the brane.
| [
{
"created": "Fri, 7 Oct 2005 15:21:45 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Toporensky",
"A. V.",
""
],
[
"Tretyakov",
"P. V.",
""
]
] | We investigate the possibility for a flat Bianchi I brane Universe to recollaps due to the presence of a negative "dark radiation" and an anisotropic stress in the form of a homogeneous magnetic field, localized on the brane. |
1001.1266 | Christian Boehmer | Christian G. Boehmer, Lukas Hollenstein, Francisco S. N. Lobo, Sanjeev
S. Seahra | Stability of the Einstein static universe in modified theories of
gravity | 3 pages, submitted to the Proceedings of the Twelfth Marcel Grossmann
Meeting on General Relativity | null | 10.1142/9789814374552_0379 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a brief overview of the stability analysis of the Einstein static
universe in various modified theories of gravity, like f(R) gravity,
Gauss-Bonnet or f(G) gravity, and Horava-Lifshitz gravity.
| [
{
"created": "Fri, 8 Jan 2010 13:11:48 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Hollenstein",
"Lukas",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Seahra",
"Sanjeev S.",
""
]
] | We present a brief overview of the stability analysis of the Einstein static universe in various modified theories of gravity, like f(R) gravity, Gauss-Bonnet or f(G) gravity, and Horava-Lifshitz gravity. |
0808.1615 | Vitor Cardoso | Vitor Cardoso, Paolo Pani, Mariano Cadoni, Marco Cavaglia | Instability of hyper-compact Kerr-like objects | 15 pages, 3 figures. To be published in CQG | Class.Quant.Grav.25:195010,2008 | 10.1088/0264-9381/25/19/195010 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Viable alternatives to astrophysical black holes include hyper-compact
objects without horizon, such as gravastars, boson stars, wormholes and
superspinars. The authors have recently shown that typical rapidly-spinning
gravastars and boson stars develop a strong instability. That analysis is
extended in this paper to... | [
{
"created": "Tue, 12 Aug 2008 08:14:08 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Cardoso",
"Vitor",
""
],
[
"Pani",
"Paolo",
""
],
[
"Cadoni",
"Mariano",
""
],
[
"Cavaglia",
"Marco",
""
]
] | Viable alternatives to astrophysical black holes include hyper-compact objects without horizon, such as gravastars, boson stars, wormholes and superspinars. The authors have recently shown that typical rapidly-spinning gravastars and boson stars develop a strong instability. That analysis is extended in this paper to a... |
0906.3827 | Lukasz Glinka | Lukasz Andrzej Glinka | Thermodynamical Quantum Gravity | 16 pages | in L.A. Glinka (Ed.) "Towards New Cosmology From Quantum Gravity &
Particle Physics", Applied Mathematics and Physics, vol. 2, no. 3 (2014):
66-72 | 10.12691/amp-2-3-2 | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | The canonically quantized 3+1 General Relativity with the global one
dimensionality conjecture defines the model, which dimensionally reduced and
secondary quantized yields the one-dimensional quantum field theory wherein the
generic one-point correlations create a boson mass responsible for quantum
gravity. In this ... | [
{
"created": "Sat, 20 Jun 2009 20:34:19 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Jun 2014 15:10:04 GMT",
"version": "v2"
}
] | 2014-06-11 | [
[
"Glinka",
"Lukasz Andrzej",
""
]
] | The canonically quantized 3+1 General Relativity with the global one dimensionality conjecture defines the model, which dimensionally reduced and secondary quantized yields the one-dimensional quantum field theory wherein the generic one-point correlations create a boson mass responsible for quantum gravity. In this pa... |
2111.03734 | Eli\v{s}ka Pol\'a\v{s}kov\'a | Eli\v{s}ka Pol\'a\v{s}kov\'a, Pavel Krtou\v{s} | Higher-dimensional black holes with multiple equal rotations | null | Phys. Rev. D 105, 044041 (2022) | 10.1103/PhysRevD.105.044041 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study a limit of the Kerr-(A)dS spacetime in a general dimension where an
arbitrary number of its rotational parameters is set equal. The resulting
metric after the limit formally splits into two parts - the first part has the
form of the Kerr-NUT-(A)dS metric analogous to the metric of the entire
spacetime, but o... | [
{
"created": "Fri, 5 Nov 2021 21:38:01 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Mar 2022 16:42:27 GMT",
"version": "v2"
}
] | 2022-03-02 | [
[
"Polášková",
"Eliška",
""
],
[
"Krtouš",
"Pavel",
""
]
] | We study a limit of the Kerr-(A)dS spacetime in a general dimension where an arbitrary number of its rotational parameters is set equal. The resulting metric after the limit formally splits into two parts - the first part has the form of the Kerr-NUT-(A)dS metric analogous to the metric of the entire spacetime, but onl... |
1210.4149 | Emilio Rub\'in de Celis | E. Rub\'in de Celis, O. P. Santill\'an and C. Simeone | Probing global aspects of a geometry by the self-force on a charge;
cylindical thin-shell wormholes | 16 pages, 4 figues. Minor corrections. Accepted version for
publication in Phys. Rev. D | null | 10.1103/PhysRevD.86.124009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain the self-interaction for a point charge in the space-time of a
cylindrical thin-shell wormhole connecting two identical locally flat
geometries with a constant deficit angle. Although this wormhole geometry is
locally indistinguishable from a cosmic string background, the corresponding
self-forces are diffe... | [
{
"created": "Mon, 15 Oct 2012 19:52:13 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Nov 2012 08:13:01 GMT",
"version": "v2"
}
] | 2015-06-11 | [
[
"de Celis",
"E. Rubín",
""
],
[
"Santillán",
"O. P.",
""
],
[
"Simeone",
"C.",
""
]
] | We obtain the self-interaction for a point charge in the space-time of a cylindrical thin-shell wormhole connecting two identical locally flat geometries with a constant deficit angle. Although this wormhole geometry is locally indistinguishable from a cosmic string background, the corresponding self-forces are differe... |
1402.6166 | Jozef Skakala | Jozef Skakala (IISER-TVM), S. Shankaranarayanan (IISER-TVM) | No minimally coupled scalar black hole hair in Lanczos-Lovelock gravity | 9 pages, v2: minor changes, the final version accepted for
publication in Class.Quant.Grav | Class.Quant.Grav. 31 (2014) 175005 | 10.1088/0264-9381/31/17/175005 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend here the result of Bekenstein [1,2] proving the non-existence of
minimally coupled scalar black hole hair in general relativity to the
Lanczos-Lovelock gravity in arbitrary dimension with non-negative coupling
constants. The only physical requirement on the multiplet of minimally coupled
scalar fields is th... | [
{
"created": "Tue, 25 Feb 2014 13:55:29 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Jul 2014 15:35:16 GMT",
"version": "v2"
}
] | 2014-08-11 | [
[
"Skakala",
"Jozef",
"",
"IISER-TVM"
],
[
"Shankaranarayanan",
"S.",
"",
"IISER-TVM"
]
] | We extend here the result of Bekenstein [1,2] proving the non-existence of minimally coupled scalar black hole hair in general relativity to the Lanczos-Lovelock gravity in arbitrary dimension with non-negative coupling constants. The only physical requirement on the multiplet of minimally coupled scalar fields is that... |
gr-qc/0606032 | Parampreet Singh | Parampreet Singh, Kevin Vandersloot, G. V. Vereshchagin | Non-Singular Bouncing Universes in Loop Quantum Cosmology | Minor changes and one figure added to improve presentation.
References added. To appear in Physical Review D | Phys.Rev. D74 (2006) 043510 | 10.1103/PhysRevD.74.043510 | IGPG-06/6-1 | gr-qc astro-ph hep-th | null | Non-perturbative quantum geometric effects in Loop Quantum Cosmology predict
a $\rho^2$ modification to the Friedmann equation at high energies. The
quadratic term is negative definite and can lead to generic bounces when the
matter energy density becomes equal to a critical value of the order of the
Planck density. ... | [
{
"created": "Wed, 7 Jun 2006 15:41:50 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Jul 2006 19:50:03 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Singh",
"Parampreet",
""
],
[
"Vandersloot",
"Kevin",
""
],
[
"Vereshchagin",
"G. V.",
""
]
] | Non-perturbative quantum geometric effects in Loop Quantum Cosmology predict a $\rho^2$ modification to the Friedmann equation at high energies. The quadratic term is negative definite and can lead to generic bounces when the matter energy density becomes equal to a critical value of the order of the Planck density. Th... |
1802.09024 | Vasilis Oikonomou | Jaume de Haro, S.D. Odintsov, V.K. Oikonomou | Viable Inflationary Evolution from Loop Quantum Cosmology Scalar-Tensor
Theory | PRD Accepted | Phys. Rev. D 97, 084052 (2018) | 10.1103/PhysRevD.97.084052 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we construct a bottom-up reconstruction technique for Loop
Quantum Cosmology scalar-tensor theories, from the observational indices.
Particularly, the reconstruction technique is based on fixing the functional
form of the scalar-to-tensor ratio as a function of the $e$-foldings number.
The aim of the tec... | [
{
"created": "Sun, 25 Feb 2018 15:38:39 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Apr 2018 16:27:13 GMT",
"version": "v2"
}
] | 2018-05-02 | [
[
"de Haro",
"Jaume",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this work we construct a bottom-up reconstruction technique for Loop Quantum Cosmology scalar-tensor theories, from the observational indices. Particularly, the reconstruction technique is based on fixing the functional form of the scalar-to-tensor ratio as a function of the $e$-foldings number. The aim of the techn... |
1906.01826 | Alexander Breev | A. I. Breev and A. V. Shapovalov | Vacuum quantum effects on Lie groups with bi-invariant metrics | 28 pages, version accepted for publication in Int. J. Geom. Methods
Mod. Phys | Int. J. Geom. Methods Mod. Phys (2019) | 10.1142/S0219887819501226 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the effects of vacuum polarization and particle creation of a
scalar field on Lie groups with a non-stationary bi-invariant metric of the
Robertson-Walker type. The vacuum expectation values of the energy momentum
tensor for a scalar field determined by the group representation are found
using the noncomm... | [
{
"created": "Wed, 5 Jun 2019 05:09:39 GMT",
"version": "v1"
}
] | 2019-07-01 | [
[
"Breev",
"A. I.",
""
],
[
"Shapovalov",
"A. V.",
""
]
] | We consider the effects of vacuum polarization and particle creation of a scalar field on Lie groups with a non-stationary bi-invariant metric of the Robertson-Walker type. The vacuum expectation values of the energy momentum tensor for a scalar field determined by the group representation are found using the noncommut... |
2308.07355 | Paola Carolina Moreira Delgado | Paola C. M. Delgado | Introdu\c{c}\~ao \`a Cosmologia Qu\^antica | 11 pages, in Portuguese, 3 figures, version accepted for publication
in Cadernos de Astronomia | null | 10.47456/Cad.Astro.v4n2.41563 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This review presents an introduction to Quantum Cosmology, including the
mathematical methods essential to the canonical approach, some of the existing
conceptual problems and the connection of the models to possible observables.
| [
{
"created": "Mon, 14 Aug 2023 11:48:23 GMT",
"version": "v1"
}
] | 2023-09-19 | [
[
"Delgado",
"Paola C. M.",
""
]
] | This review presents an introduction to Quantum Cosmology, including the mathematical methods essential to the canonical approach, some of the existing conceptual problems and the connection of the models to possible observables. |
1206.1271 | Jose Luis Jaramillo | Jos\'e Luis Jaramillo | A note on degeneracy, marginal stability and extremality of black hole
horizons | 6 pages, no figures, updated to match published version | Class.Quant.Grav. 29 (2012) 177001 | 10.1088/0264-9381/29/17/177001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given a stationary axisymmetric black hole horizon admitting a section
characterised as a strictly future stable marginally outer trapped surface, we
extend the equivalence between the notions of horizon degeneracy and marginal
stability to the fulfillment, under the dominant energy condition, of the
A=8\pi |J| geome... | [
{
"created": "Wed, 6 Jun 2012 16:42:44 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Aug 2012 09:14:45 GMT",
"version": "v2"
}
] | 2012-08-28 | [
[
"Jaramillo",
"José Luis",
""
]
] | Given a stationary axisymmetric black hole horizon admitting a section characterised as a strictly future stable marginally outer trapped surface, we extend the equivalence between the notions of horizon degeneracy and marginal stability to the fulfillment, under the dominant energy condition, of the A=8\pi |J| geometr... |
gr-qc/0005036 | Farhad Darabi | F. Darabi, W. N. Sajko, P. S. Wesson | Quantum cosmology of 5D non-compactified Kaluza-Klein theory | 14 pages, LaTeX | Class.Quant.Grav. 17 (2000) 4357-4364 | 10.1088/0264-9381/17/21/301 | null | gr-qc | null | We study the quantum cosmology of a five dimensional non-compactified
Kaluza-Klein theory where the 4D metric depends on the fifth coordinate,
$x^4\equiv l$. This model is effectively equivalent to a 4D non-minimally
coupled dilaton field in addition to matter generated on hypersurfaces
l=constant by the extra coordi... | [
{
"created": "Wed, 10 May 2000 23:28:20 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Darabi",
"F.",
""
],
[
"Sajko",
"W. N.",
""
],
[
"Wesson",
"P. S.",
""
]
] | We study the quantum cosmology of a five dimensional non-compactified Kaluza-Klein theory where the 4D metric depends on the fifth coordinate, $x^4\equiv l$. This model is effectively equivalent to a 4D non-minimally coupled dilaton field in addition to matter generated on hypersurfaces l=constant by the extra coordina... |
1206.0331 | B. S. Sathyaprakash | B. Sathyaprakash, M. Abernathy, F. Acernese, P. Ajith, B. Allen, P.
Amaro-Seoane, N. Andersson, S. Aoudia, K. Arun, P. Astone, B. Krishnan, L.
Barack, F. Barone, B. Barr, M. Barsuglia, M. Bassan, R. Bassiri, M. Beker, N.
Beveridge, M. Bizouard, C. Bond, S. Bose, L. Bosi, S. Braccini, C.
Bradaschia, M. Britzger,... | Scientific Objectives of Einstein Telescope | 18 pages, 4 figures, Plenary talk given at Amaldi Meeting, July 2011 | Class. Quantum Grav. 29, 124013, 2012 | 10.1088/0264-9381/29/12/124013 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The advanced interferometer network will herald a new era in observational
astronomy. There is a very strong science case to go beyond the advanced
detector network and build detectors that operate in a frequency range from 1
Hz-10 kHz, with sensitivity a factor ten better in amplitude. Such detectors
will be able to... | [
{
"created": "Sat, 2 Jun 2012 00:04:12 GMT",
"version": "v1"
}
] | 2012-06-05 | [
[
"Sathyaprakash",
"B.",
""
],
[
"Abernathy",
"M.",
""
],
[
"Acernese",
"F.",
""
],
[
"Ajith",
"P.",
""
],
[
"Allen",
"B.",
""
],
[
"Amaro-Seoane",
"P.",
""
],
[
"Andersson",
"N.",
""
],
[
"Aoudia",
... | The advanced interferometer network will herald a new era in observational astronomy. There is a very strong science case to go beyond the advanced detector network and build detectors that operate in a frequency range from 1 Hz-10 kHz, with sensitivity a factor ten better in amplitude. Such detectors will be able to p... |
gr-qc/9904072 | Mauricio Bellini | Mauricio Bellini | Towards a theory of Warm Inflation of the Universe | 14 pages, no figures, to appear in Classical and Quantum Gravity | Class.Quant.Grav. 16 (1999) 2393-2402 | 10.1088/0264-9381/16/7/316 | null | gr-qc | null | The warm inflation scenario is an alternative mechanism which can explain the
isotropic and homogeneous Universe which we are living in. In this work I
extend a previously introduced formalism, without the restriction of slow -
roll regime. Quantum to classical transition of the fluctuations is studied by
means of th... | [
{
"created": "Tue, 27 Apr 1999 19:02:17 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Bellini",
"Mauricio",
""
]
] | The warm inflation scenario is an alternative mechanism which can explain the isotropic and homogeneous Universe which we are living in. In this work I extend a previously introduced formalism, without the restriction of slow - roll regime. Quantum to classical transition of the fluctuations is studied by means of the ... |
1310.4143 | Mehdi Saravani | Mehdi Saravani, Niayesh Afshordi and Robert B. Mann | Dynamical Emergence of Universal Horizons during the formation of Black
Holes | 20 pages | Phys. Rev. D 89, 084029 (2014) | 10.1103/PhysRevD.89.084029 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivations for the existence of a fundamental preferred frame range from
pure phenomenology to attempts to solve the non-renormalizability of quantum
gravity, the problem of time (and scale), and the cosmological constant
problem(s). In many explicit constructions, such as Einstein-Aether or
Gravitational Aether the... | [
{
"created": "Tue, 15 Oct 2013 18:44:46 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Jul 2014 18:33:06 GMT",
"version": "v2"
}
] | 2014-07-10 | [
[
"Saravani",
"Mehdi",
""
],
[
"Afshordi",
"Niayesh",
""
],
[
"Mann",
"Robert B.",
""
]
] | Motivations for the existence of a fundamental preferred frame range from pure phenomenology to attempts to solve the non-renormalizability of quantum gravity, the problem of time (and scale), and the cosmological constant problem(s). In many explicit constructions, such as Einstein-Aether or Gravitational Aether theor... |
2403.15984 | Sven Hirsch | Sven Hirsch and Yiyue Zhang | Initial data sets with vanishing mass are contained in pp-wave
spacetimes | null | null | null | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In 1981, Schoen-Yau and Witten showed that in General Relativity both the
total energy $E$ and the total mass $m$ of an initial data set modelling an
isolated gravitational system are non-negative. Moreover, if $E=0$, the initial
data set must be contained in Minkowski space. In this paper, we show that if
$m=0$, i.e... | [
{
"created": "Sun, 24 Mar 2024 02:28:21 GMT",
"version": "v1"
}
] | 2024-03-26 | [
[
"Hirsch",
"Sven",
""
],
[
"Zhang",
"Yiyue",
""
]
] | In 1981, Schoen-Yau and Witten showed that in General Relativity both the total energy $E$ and the total mass $m$ of an initial data set modelling an isolated gravitational system are non-negative. Moreover, if $E=0$, the initial data set must be contained in Minkowski space. In this paper, we show that if $m=0$, i.e. ... |
2405.09435 | Miguel Pe\~nafiel | M. L. Pe\~nafiel and S. E. Perez Bergliaffa | On the radiation field of a linearly accelerated charged particle in
Born-Infeld theory | 41 pages, 9 figures, Accepted for publication in Annals of Physics | null | 10.1016/j.aop.2024.169691 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The electric potential and the electromagnetic field for a linearly
accelerated Born-Infeld charged particle are obtained in an inertial frame by a
method that can, in principle, be applied to any electromagnetic theory. The
method is based on (i) the fact that the metric near the horizon of a
Schwarzschild black hol... | [
{
"created": "Wed, 15 May 2024 15:26:47 GMT",
"version": "v1"
}
] | 2024-07-08 | [
[
"Peñafiel",
"M. L.",
""
],
[
"Bergliaffa",
"S. E. Perez",
""
]
] | The electric potential and the electromagnetic field for a linearly accelerated Born-Infeld charged particle are obtained in an inertial frame by a method that can, in principle, be applied to any electromagnetic theory. The method is based on (i) the fact that the metric near the horizon of a Schwarzschild black hole ... |
1012.4730 | Robert Monjo Dr | Robert Monjo, \'Alvaro Rodr\'iguez Abella, Rutwig Campoamor-Stursberg | From coloured gravity to electromagnetism | 42 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gauge formalism in \textit{telepalallel gravity} provides an interesting
viewpoint to describe interactions according to an anholonomic observer's
tetrad basis. Without going into assessing the complete viability of
quantization in an early stage, this paper explores classical gravity within
the framework of a cl... | [
{
"created": "Tue, 21 Dec 2010 16:55:52 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Jan 2011 19:57:30 GMT",
"version": "v2"
},
{
"created": "Mon, 2 Dec 2013 22:04:05 GMT",
"version": "v3"
},
{
"created": "Wed, 26 Jul 2023 22:32:15 GMT",
"version": "v4"
},
{
"cr... | 2024-08-16 | [
[
"Monjo",
"Robert",
""
],
[
"Abella",
"Álvaro Rodríguez",
""
],
[
"Campoamor-Stursberg",
"Rutwig",
""
]
] | The gauge formalism in \textit{telepalallel gravity} provides an interesting viewpoint to describe interactions according to an anholonomic observer's tetrad basis. Without going into assessing the complete viability of quantization in an early stage, this paper explores classical gravity within the framework of a clas... |
1211.0690 | Gonzalo Olmo | Gonzalo J. Olmo, Helios Sanchis-Alepuz, Swapnil Tripathi | Static Spherically Symmetric Solutions in Extended Palatini Gravity | 3 pages, ws-procs975x65.cls, corrects some typos present in the
published version of the Proceedings of 12th Marcel Grossmann Meeting, Paris
(France) | null | 10.1142/9789814374552_0402 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider static spherically symmetric stellar configurations in Palatini
theories of gravity in which the Lagrangian is an unspecified function of the
form f(R,R_{\mu\nu}R^{\mu\nu}). We obtain the Tolman-Oppenheimer-Volkov
equations corresponding to this class of theories and show that they recover
those of f(R) t... | [
{
"created": "Sun, 4 Nov 2012 15:07:50 GMT",
"version": "v1"
}
] | 2012-11-06 | [
[
"Olmo",
"Gonzalo J.",
""
],
[
"Sanchis-Alepuz",
"Helios",
""
],
[
"Tripathi",
"Swapnil",
""
]
] | We consider static spherically symmetric stellar configurations in Palatini theories of gravity in which the Lagrangian is an unspecified function of the form f(R,R_{\mu\nu}R^{\mu\nu}). We obtain the Tolman-Oppenheimer-Volkov equations corresponding to this class of theories and show that they recover those of f(R) the... |
gr-qc/9912062 | Alberto Balfagon Costa | X. Jaen (1) and A. Balfagon (2) ((1)Universitat Politecnica de
Catalunya, Laboratori de Fisica Matematica,Societat Catalana de
Fisica(I.E.C.), (2)Institut Quimic de Sarria (universitat Ramon
Llull),Laboratori de Fisica Matematica,Societat Catalana de Fisica(I.E.C.)) | Nondimensional Simplification of Tensor Polynomials with Indices | null | null | null | null | gr-qc | null | We are presenting an algorithm capable of simplifying tensor polynomials with
indices when the building tensors have index symmetry properties. These
properties include simple symmetry, cyclicity and those due to the presence of
covariant derivatives. The algorithm is part of a Mathematica package called
Tools of Ten... | [
{
"created": "Wed, 15 Dec 1999 11:53:50 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Jaen",
"X.",
""
],
[
"Balfagon",
"A.",
""
]
] | We are presenting an algorithm capable of simplifying tensor polynomials with indices when the building tensors have index symmetry properties. These properties include simple symmetry, cyclicity and those due to the presence of covariant derivatives. The algorithm is part of a Mathematica package called Tools of Tenso... |
1208.6563 | Dong-han Yeom | Dong-il Hwang, Bum-Hoon Lee, Ewan D. Stewart, Dong-han Yeom, Heeseung
Zoe | Euclidean quantum gravity and stochastic inflation | 25 pages, 6 figures | Phys.Rev.D87:063502,2013 | 10.1103/PhysRevD.87.063502 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we compare dispersions of a scalar field in Euclidean quantum
gravity with stochastic inflation. We use Einstein gravity and a minimally
coupled scalar field with a quadratic potential. We restrict our attention to
small mass and small field cases. In the Euclidean approach, we introduce the
ground sta... | [
{
"created": "Fri, 31 Aug 2012 18:07:06 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Apr 2013 05:19:23 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Aug 2014 01:25:18 GMT",
"version": "v3"
},
{
"created": "Fri, 12 Sep 2014 13:18:23 GMT",
"version": "v4"
}
] | 2014-09-16 | [
[
"Hwang",
"Dong-il",
""
],
[
"Lee",
"Bum-Hoon",
""
],
[
"Stewart",
"Ewan D.",
""
],
[
"Yeom",
"Dong-han",
""
],
[
"Zoe",
"Heeseung",
""
]
] | In this paper, we compare dispersions of a scalar field in Euclidean quantum gravity with stochastic inflation. We use Einstein gravity and a minimally coupled scalar field with a quadratic potential. We restrict our attention to small mass and small field cases. In the Euclidean approach, we introduce the ground state... |
2209.09922 | Adri\'an Del R\'io Vega | Abhay Ashtekar and Adri\'an del R\'io | Probing cosmological singularities with quantum fields: Open and closed
FLRW universes | 22 pages + 2 appendices | Phys. Rev. D 106, 085003 (2022) | 10.1103/PhysRevD.106.085003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was recently pointed out that linear quantum fields $\hat \phi(x)$ can be
meaningfully propagated across the big bang (and the big crunch) singularities
of spatially flat Friedmann, Lema\^itre, Robertson, Walker (FLRW) universes
\cite{ADLS2021}. Recall that $\hat \phi(x)$, as well as renormalized
observables $\lan... | [
{
"created": "Tue, 20 Sep 2022 18:00:55 GMT",
"version": "v1"
}
] | 2022-10-12 | [
[
"Ashtekar",
"Abhay",
""
],
[
"del Río",
"Adrián",
""
]
] | It was recently pointed out that linear quantum fields $\hat \phi(x)$ can be meaningfully propagated across the big bang (and the big crunch) singularities of spatially flat Friedmann, Lema\^itre, Robertson, Walker (FLRW) universes \cite{ADLS2021}. Recall that $\hat \phi(x)$, as well as renormalized observables $\langl... |
0908.2500 | Evgeny Sorkin | Evgeny Sorkin, Matthew W. Choptuik | Generalized harmonic formulation in spherical symmetry | 47 pages, 15 figures. v2: Minor corrections, including 2 added
references; journal version. | Gen.Rel.Grav.42:1239-1286,2010 | 10.1007/s10714-009-0905-8 | AEI-2009-077 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this pedagogically structured article, we describe a generalized harmonic
formulation of the Einstein equations in spherical symmetry which is regular at
the origin. The generalized harmonic approach has attracted significant
attention in numerical relativity over the past few years, especially as
applied to the p... | [
{
"created": "Tue, 18 Aug 2009 07:36:41 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Apr 2010 15:01:09 GMT",
"version": "v2"
}
] | 2010-05-07 | [
[
"Sorkin",
"Evgeny",
""
],
[
"Choptuik",
"Matthew W.",
""
]
] | In this pedagogically structured article, we describe a generalized harmonic formulation of the Einstein equations in spherical symmetry which is regular at the origin. The generalized harmonic approach has attracted significant attention in numerical relativity over the past few years, especially as applied to the pro... |
gr-qc/0005027 | Sawa Manoff | S. Manoff | Relative velocity and relative acceleration induced by the torsion in
(pseudo) Riemannian spaces with torsion and in spaces with an affine
connection and metrics | 35 pages | null | null | null | gr-qc | null | The influence of the torsion on the relative velocity and on the relative
acceleration between particles (points) in spaces with an affine connection and
a metric [$(L_n,g)$-spaces] and in (pseudo) Riemannian spaces with torsion
($U_n$-spaces) is considered. Necessary and sufficient conditions as well as
only necessa... | [
{
"created": "Wed, 10 May 2000 07:59:47 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Manoff",
"S.",
""
]
] | The influence of the torsion on the relative velocity and on the relative acceleration between particles (points) in spaces with an affine connection and a metric [$(L_n,g)$-spaces] and in (pseudo) Riemannian spaces with torsion ($U_n$-spaces) is considered. Necessary and sufficient conditions as well as only necessary... |
0911.2297 | Ken-Ichi Nakao | Swastik Bhattacharya, Pankaj S. Joshi and Ken-ichi Nakao | Accelerated cosmic expansion in a scalar-field universe | 12 pages, 8 figures | Phys.Rev.D81:064032,2010 | 10.1103/PhysRevD.81.064032 | OCU-PHYS-323, AP-GR-74 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider here a spherically symmetric but inhomogeneous universe filled
with a massless scalar field. The model obeys two constraints. The first one is
that the gradient of the scalar field is timelike everywhere. The second
constraint is that the radial coordinate basis vector is a unit vector field in
the comovi... | [
{
"created": "Thu, 12 Nov 2009 04:32:45 GMT",
"version": "v1"
}
] | 2011-04-20 | [
[
"Bhattacharya",
"Swastik",
""
],
[
"Joshi",
"Pankaj S.",
""
],
[
"Nakao",
"Ken-ichi",
""
]
] | We consider here a spherically symmetric but inhomogeneous universe filled with a massless scalar field. The model obeys two constraints. The first one is that the gradient of the scalar field is timelike everywhere. The second constraint is that the radial coordinate basis vector is a unit vector field in the comoving... |
2303.04126 | Nicolas Lecoeur | Eugeny Babichev, Christos Charmousis, Mokhtar Hassaine, Nicolas
Lecoeur | Selecting Horndeski theories without apparent symmetries and their black
hole solutions | null | null | 10.1103/PhysRevD.108.024019 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Starting from a generalised Kaluza-Klein action including arbitrary Horndeski
potentials, we establish integrability and compatibility conditions that solve
the generic field equations for spherical symmetry. The resulting theories can
be identified as general Horndeski theories having no apparent symmetries in
four ... | [
{
"created": "Tue, 7 Mar 2023 18:40:48 GMT",
"version": "v1"
}
] | 2023-07-26 | [
[
"Babichev",
"Eugeny",
""
],
[
"Charmousis",
"Christos",
""
],
[
"Hassaine",
"Mokhtar",
""
],
[
"Lecoeur",
"Nicolas",
""
]
] | Starting from a generalised Kaluza-Klein action including arbitrary Horndeski potentials, we establish integrability and compatibility conditions that solve the generic field equations for spherical symmetry. The resulting theories can be identified as general Horndeski theories having no apparent symmetries in four di... |
2205.08831 | Miguel Manzano | Miguel Manzano and Marc Mars | General matching across Killing horizons of zero order | 38 pages, 2 figures | null | 10.1103/PhysRevD.106.044019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Null shells are a useful geometric construction to study the propagation of
infinitesimally thin concentrations of massless particles or impulsive waves.
After recalling the necessary and sufficient conditions obtained in [28] that
allow for the matching of two spacetimes with null embedded hypersurfaces as
boundarie... | [
{
"created": "Wed, 18 May 2022 09:57:48 GMT",
"version": "v1"
}
] | 2022-08-31 | [
[
"Manzano",
"Miguel",
""
],
[
"Mars",
"Marc",
""
]
] | Null shells are a useful geometric construction to study the propagation of infinitesimally thin concentrations of massless particles or impulsive waves. After recalling the necessary and sufficient conditions obtained in [28] that allow for the matching of two spacetimes with null embedded hypersurfaces as boundaries,... |
2008.09902 | Francisco Lobo | Francisco S. N. Lobo, Diego Rubiera-Garcia | Wormholes, energy conditions and time machines | 7 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This report is based on the Parallel Session AT3 ``Wormholes, Energy
Conditions and Time Machines'' of the Fifteenth Marcel Grossmann Meeting -
MG15, held at the University of Rome ``La Sapienza'', Rome, in 2018.
| [
{
"created": "Sat, 22 Aug 2020 19:32:53 GMT",
"version": "v1"
}
] | 2020-08-25 | [
[
"Lobo",
"Francisco S. N.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
]
] | This report is based on the Parallel Session AT3 ``Wormholes, Energy Conditions and Time Machines'' of the Fifteenth Marcel Grossmann Meeting - MG15, held at the University of Rome ``La Sapienza'', Rome, in 2018. |
gr-qc/0609049 | Marcello Ortaggio | Marcello Ortaggio, Vojtech Pravda | Black rings with a small electric charge: gyromagnetic ratios and
algebraic alignment | 22 pages, 3 figures. v2: new appendix C finds the gyromagnetic ratio
g=D-2 in any dimensions, two new references. To appear in JHEP | JHEP0612:054,2006 | 10.1088/1126-6708/2006/12/054 | null | gr-qc hep-th | null | We study electromagnetic test fields in the background of vacuum black rings
using Killing vectors as vector potentials. We consider both spacetimes with a
rotating S^1 and with a rotating S^2 and we demonstrate, in particular, that
the gyromagnetic ratio of slightly charged black rings takes the value g=3
(this will... | [
{
"created": "Thu, 14 Sep 2006 11:44:51 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Dec 2006 09:38:51 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Ortaggio",
"Marcello",
""
],
[
"Pravda",
"Vojtech",
""
]
] | We study electromagnetic test fields in the background of vacuum black rings using Killing vectors as vector potentials. We consider both spacetimes with a rotating S^1 and with a rotating S^2 and we demonstrate, in particular, that the gyromagnetic ratio of slightly charged black rings takes the value g=3 (this will i... |
2204.03480 | Mariana Carrillo-Gonz\'alez | Jos\'e Eliel Camargo-Molina, Mariana Carrillo Gonz\'alez, Arttu
Rajantie | Phase Transitions in de Sitter: Quantum Corrections | 7 pages, double column | null | null | Imperial/TP/2022/MC/03 | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the decay rate of a false vacuum state in de Sitter space at
high Hubble rates, using two methods: the Hawking-Moss instanton method which
is fully quantum mechanical but relies on the saddle-point approximation, and
the Starobinsky-Yokoyama stochastic approach which is non-perturbative but does
not in... | [
{
"created": "Wed, 6 Apr 2022 14:46:16 GMT",
"version": "v1"
}
] | 2022-04-08 | [
[
"Camargo-Molina",
"José Eliel",
""
],
[
"González",
"Mariana Carrillo",
""
],
[
"Rajantie",
"Arttu",
""
]
] | We investigate the decay rate of a false vacuum state in de Sitter space at high Hubble rates, using two methods: the Hawking-Moss instanton method which is fully quantum mechanical but relies on the saddle-point approximation, and the Starobinsky-Yokoyama stochastic approach which is non-perturbative but does not incl... |
2208.04596 | Saikat Chakraborty | Saikat Chakraborty, Daniele Gregoris, B. Mishra | On the uniqueness of $\Lambda$CDM-like evolution for homogeneous and
isotropic cosmology in General Relativity | 15 pages. 3 figures. Accepted for publication in PLB | PLB, 842, 137962, 2023 | 10.1016/j.physletb.2023.137962 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We address the question of the uniqueness of spatially flat $\Lambda$CDM-like
evolution for FLRW cosmologies in General Relativity, i.e. whether any model
other than the spatially flat $\Lambda$CDM can give rise to the same type of
scale factor evolution. Firstly, we elaborate on what we exactly imply by a
$\Lambda$C... | [
{
"created": "Tue, 9 Aug 2022 08:25:06 GMT",
"version": "v1"
},
{
"created": "Thu, 18 May 2023 17:11:20 GMT",
"version": "v2"
}
] | 2024-03-21 | [
[
"Chakraborty",
"Saikat",
""
],
[
"Gregoris",
"Daniele",
""
],
[
"Mishra",
"B.",
""
]
] | We address the question of the uniqueness of spatially flat $\Lambda$CDM-like evolution for FLRW cosmologies in General Relativity, i.e. whether any model other than the spatially flat $\Lambda$CDM can give rise to the same type of scale factor evolution. Firstly, we elaborate on what we exactly imply by a $\Lambda$CDM... |
2404.07723 | Lajos Di\'osi | Lajos Di\'osi | The classical-quantum hybrid canonical dynamics and its difficulties
with special and general relativity | 9pp | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | We discuss the Hamiltonian hybrid coupling between a classical and a quantum
subsystem. If applicable to classical gravity coupled to quantized matter, this
hybrid theory might realize a captivating `postquantum' alternative to full
quantum-gravity. We summarize the nonrelativistic hybrid dynamics in improved
formali... | [
{
"created": "Thu, 11 Apr 2024 13:13:35 GMT",
"version": "v1"
}
] | 2024-04-12 | [
[
"Diósi",
"Lajos",
""
]
] | We discuss the Hamiltonian hybrid coupling between a classical and a quantum subsystem. If applicable to classical gravity coupled to quantized matter, this hybrid theory might realize a captivating `postquantum' alternative to full quantum-gravity. We summarize the nonrelativistic hybrid dynamics in improved formalism... |
gr-qc/0207047 | David Langlois | David Langlois (GRECO/IAP, Paris) | Gravitation and cosmology in a brane-universe | Invited review talk given at the 11th Workshop on General Relativity
and Gravitation, Waseda University, Tokyo, Japan (Jan 2002); 14 pages; Latex;
one figure | null | null | null | gr-qc astro-ph hep-ph hep-th | null | Recent theoretical developments have generated a strong interest in the
``brane-world'' picture, which assumes that ordinary matter is trapped in a
three-dimensional submanifold, usually called brane, embedded in a higher
dimensional space. The purpose of this review is to introduce some basic
results concerning grav... | [
{
"created": "Thu, 11 Jul 2002 16:53:12 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Langlois",
"David",
"",
"GRECO/IAP, Paris"
]
] | Recent theoretical developments have generated a strong interest in the ``brane-world'' picture, which assumes that ordinary matter is trapped in a three-dimensional submanifold, usually called brane, embedded in a higher dimensional space. The purpose of this review is to introduce some basic results concerning gravit... |
1905.10554 | Bibhas Majhi Ranjan | Kushal Chakraborty, Bibhas Ranjan Majhi | Detector response along null geodesics in black hole spacetimes and in a
Friedmann-Lemaitre-Robertson-Walker Universe | Expanded version, to appear in Phys. Rev. D | Phys. Rev. D 100, 045004 (2019) | 10.1103/PhysRevD.100.045004 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the detector's response when moving along an ingoing null geodesic.
The backgrounds are chosen to be black hole spacetimes ($(1+1)$ dimensional
Schwarzschild metric and near horizon effective metric for any stationary black
hole in arbitrary dimensions) as well as Friedmann-Lemaitre-Robertson-Walker
(FLRW) U... | [
{
"created": "Sat, 25 May 2019 08:20:32 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Jul 2019 17:30:44 GMT",
"version": "v2"
}
] | 2019-08-14 | [
[
"Chakraborty",
"Kushal",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
]
] | We study the detector's response when moving along an ingoing null geodesic. The backgrounds are chosen to be black hole spacetimes ($(1+1)$ dimensional Schwarzschild metric and near horizon effective metric for any stationary black hole in arbitrary dimensions) as well as Friedmann-Lemaitre-Robertson-Walker (FLRW) Uni... |
2008.02774 | Luca Marchetti | Luca Marchetti and Daniele Oriti | Effective relational cosmological dynamics from Quantum Gravity | 31 pages, 1 figure | JHEP 05 (2021) 025 | 10.1007/JHEP05(2021)025 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the relational strategy to solve the problem of time in quantum
gravity and different ways in which it could be implemented, pointing out in
particular the fundamentally new dimension that the problem takes in a quantum
gravity context in which spacetime and geometry are understood as emergent. We
realize ... | [
{
"created": "Thu, 6 Aug 2020 17:17:58 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Oct 2020 11:22:57 GMT",
"version": "v2"
},
{
"created": "Sun, 16 May 2021 15:14:21 GMT",
"version": "v3"
}
] | 2021-09-23 | [
[
"Marchetti",
"Luca",
""
],
[
"Oriti",
"Daniele",
""
]
] | We discuss the relational strategy to solve the problem of time in quantum gravity and different ways in which it could be implemented, pointing out in particular the fundamentally new dimension that the problem takes in a quantum gravity context in which spacetime and geometry are understood as emergent. We realize co... |
2210.01914 | Makana Silva | Makana Silva, Gabriel Vasquez, Emily Koivu, Arijit Das, and
Christopher Hirata | Corrections to Hawking Radiation from Asteroid Mass Primordial Black
Holes: I. Formalism of Dissipative Interactions in Quantum Electrodynamics | 30 pages, 1 figure | null | 10.1103/PhysRevD.107.045004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Primordial black holes (PBHs) within the mass range $10^{17} - 10^{22}$ g are
a favorable candidate for describing the all of the dark matter content.
Towards the lower end of this mass range, the Hawking temperature, $T_{\rm H}$,
of these PBHs is $T_{\rm H} \gtrsim 100$ keV, allowing for the creation of
electron -- ... | [
{
"created": "Tue, 4 Oct 2022 21:25:44 GMT",
"version": "v1"
}
] | 2023-02-22 | [
[
"Silva",
"Makana",
""
],
[
"Vasquez",
"Gabriel",
""
],
[
"Koivu",
"Emily",
""
],
[
"Das",
"Arijit",
""
],
[
"Hirata",
"Christopher",
""
]
] | Primordial black holes (PBHs) within the mass range $10^{17} - 10^{22}$ g are a favorable candidate for describing the all of the dark matter content. Towards the lower end of this mass range, the Hawking temperature, $T_{\rm H}$, of these PBHs is $T_{\rm H} \gtrsim 100$ keV, allowing for the creation of electron -- po... |
2102.10813 | Nicola Maggiore | Giulio Gambuti and Nicola Maggiore | Fierz-Pauli theory reloaded: from a theory of a symmetric tensor field
to linearized massive gravity | 21 pages, no figures | Eur. Phys. J. C 81, 171 (2021) | 10.1140/epjc/s10052-021-08962-8 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Modifying gravity at large distances by means of a massive graviton may
explain the observed acceleration of the Universe without Dark Energy. The
standard paradigm for Massive Gravity is the Fierz-Pauli theory, which,
nonetheless, displays well known flaws in its massless limit. The most serious
one is represented b... | [
{
"created": "Mon, 22 Feb 2021 07:42:26 GMT",
"version": "v1"
}
] | 2021-02-23 | [
[
"Gambuti",
"Giulio",
""
],
[
"Maggiore",
"Nicola",
""
]
] | Modifying gravity at large distances by means of a massive graviton may explain the observed acceleration of the Universe without Dark Energy. The standard paradigm for Massive Gravity is the Fierz-Pauli theory, which, nonetheless, displays well known flaws in its massless limit. The most serious one is represented by ... |
gr-qc/9908083 | Keith H. Lockitch | John L. Friedman and Keith H. Lockitch | Gravitational-wave driven instability of rotating relativistic stars | 14 pages PTPTeX v.1.0. Contribution to proceedings of the 1999 Yukawa
International Seminar | Prog.Theor.Phys.Suppl.136:121-134,1999 | 10.1143/PTPS.136.121 | WISC-MILW-99-TH-12 | gr-qc astro-ph | null | A brief review of the stability of rotating relativistic stars is followed by
a more detailed discussion of recent work on an instability of r-modes, modes
of rotating stars that have axial parity in the slow-rotation limit. These
modes may dominate the spin-down of neutron stars that are rapidly rotating at
birth, a... | [
{
"created": "Tue, 31 Aug 1999 19:54:54 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Friedman",
"John L.",
""
],
[
"Lockitch",
"Keith H.",
""
]
] | A brief review of the stability of rotating relativistic stars is followed by a more detailed discussion of recent work on an instability of r-modes, modes of rotating stars that have axial parity in the slow-rotation limit. These modes may dominate the spin-down of neutron stars that are rapidly rotating at birth, and... |
gr-qc/9711085 | Jai-chan Hwang | J. Hwang and H. Noh | Relativistic cosmological hydrodynamics | 3 pages, latex, mprocl.sty; The Eighth Marcel Grossmann Meeting on
General Relativity | null | null | null | gr-qc | null | We investigate the relativistic cosmological hydrodynamic perturbations. We
present the general large scale solutions of the perturbation variables valid
for the general sign of three space curvature, the cosmological constant, and
generally evolving background equation of state. The large scale evolution is
characte... | [
{
"created": "Fri, 28 Nov 1997 07:51:18 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Nov 1997 07:47:09 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Hwang",
"J.",
""
],
[
"Noh",
"H.",
""
]
] | We investigate the relativistic cosmological hydrodynamic perturbations. We present the general large scale solutions of the perturbation variables valid for the general sign of three space curvature, the cosmological constant, and generally evolving background equation of state. The large scale evolution is characteri... |
1212.1006 | Francisco Lobo | Francisco S. N. Lobo | Time machines and traversable wormholes in modified theories of gravity | 5 pages, 2 figures; contribution to the proceedings of The Time
Machine Factory, Turin, Italy, 14-20 October, 2012 | EPJ Web Conf. 58 (2013) 01006 | 10.1051/epjconf/20135801006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review recent work on wormhole geometries in the context of modified
theories of gravity, in particular, in f(R) gravity and with a nonminimal
curvature-matter coupling, and in the recently proposed hybrid metric-Palatini
theory. In principle, the normal matter threading the throat can be shown to
satisfy the ener... | [
{
"created": "Wed, 5 Dec 2012 12:29:11 GMT",
"version": "v1"
}
] | 2013-10-18 | [
[
"Lobo",
"Francisco S. N.",
""
]
] | We review recent work on wormhole geometries in the context of modified theories of gravity, in particular, in f(R) gravity and with a nonminimal curvature-matter coupling, and in the recently proposed hybrid metric-Palatini theory. In principle, the normal matter threading the throat can be shown to satisfy the energy... |
1905.09913 | Mar\'ia Jos\'e Guzm\'an | Cecilia Bejarano, Rafael Ferraro, Franco Fiorini, Mar\'ia Jos\'e
Guzm\'an | Reflections on the covariance of modified teleparallel theories of
gravity | 12 pages, no figures; contribution to the proceedings of the workshop
"Teleparallel Universes in Salamanca" | Universe 5 (2019) no.6, 158 | 10.3390/universe5060158 | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We review the current status of the Lorentz covariance in teleparallel and
modified teleparallel theories of gravity, and discuss the controversial
features of the different approaches. We also revisit the issue of the remnant
Lorentz gauge symmetries in $f(T)$ gravity.
| [
{
"created": "Thu, 23 May 2019 20:37:22 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Jun 2019 21:48:59 GMT",
"version": "v2"
}
] | 2019-07-05 | [
[
"Bejarano",
"Cecilia",
""
],
[
"Ferraro",
"Rafael",
""
],
[
"Fiorini",
"Franco",
""
],
[
"Guzmán",
"María José",
""
]
] | We review the current status of the Lorentz covariance in teleparallel and modified teleparallel theories of gravity, and discuss the controversial features of the different approaches. We also revisit the issue of the remnant Lorentz gauge symmetries in $f(T)$ gravity. |
gr-qc/9410015 | Renaud Parentani | Renaud Parentani, Joseph Katz and Isao Okamoto | Thermodynamics of a black hole in a cavity | 27 pages, latex file, contains 3 figures available on request at
okamoto@gprx.miz.nao.ac.jp | Class.Quant.Grav.12:1663-1684,1995 | 10.1088/0264-9381/12/7/009 | null | gr-qc | null | We present a unified thermodynamical description of the configurations
consisting on self-gravitating radiation with or without a black hole. We
compute the thermal fluctuations and evaluate where will they induce a
transition from metastable configurations towards stable ones. We show that the
probability of finding... | [
{
"created": "Wed, 12 Oct 1994 11:19:00 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Parentani",
"Renaud",
""
],
[
"Katz",
"Joseph",
""
],
[
"Okamoto",
"Isao",
""
]
] | We present a unified thermodynamical description of the configurations consisting on self-gravitating radiation with or without a black hole. We compute the thermal fluctuations and evaluate where will they induce a transition from metastable configurations towards stable ones. We show that the probability of finding s... |
1608.06540 | Ruben Cordero | Ruben Cordero, Eduardo L. Gonzalez and Alfonso Queijeiro | An equation of state for purely kinetic k-essence inspired by cosmic
topological defects | 19 pages, 13 figures, typos corrected and references added | null | 10.1140/epjc/s10052-017-4913-7 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the physical properties of a purely kinetic k-essence model
with an equation of state motivated in superconducting membranes. We compute
the equation of state parameter $w$ and discuss its physical evolution via a
nonlinear equation of state. Using the adiabatic speed of sound and energy
density, we re... | [
{
"created": "Mon, 15 Aug 2016 18:59:25 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Sep 2016 15:41:28 GMT",
"version": "v2"
}
] | 2017-08-02 | [
[
"Cordero",
"Ruben",
""
],
[
"Gonzalez",
"Eduardo L.",
""
],
[
"Queijeiro",
"Alfonso",
""
]
] | We investigate the physical properties of a purely kinetic k-essence model with an equation of state motivated in superconducting membranes. We compute the equation of state parameter $w$ and discuss its physical evolution via a nonlinear equation of state. Using the adiabatic speed of sound and energy density, we rest... |
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