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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0610142 | L\'eon Brenig | Leon Brenig | Is quantum mechanics based on an invariance principle? | 15 pages | J.Phys.A40:4567-4584,2007 | 10.1088/1751-8113/40/17/012 | null | gr-qc | null | Non-relativistic quantum mechanics for a free particle is shown to emerge
from classical mechanics through an invariance principle under transformations
that preserve the Heisenberg position-momentum inequality. These
transformations are induced by isotropic space dilations. This invariance
imposes a change in the la... | [
{
"created": "Fri, 27 Oct 2006 15:36:53 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Apr 2007 15:11:19 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Brenig",
"Leon",
""
]
] | Non-relativistic quantum mechanics for a free particle is shown to emerge from classical mechanics through an invariance principle under transformations that preserve the Heisenberg position-momentum inequality. These transformations are induced by isotropic space dilations. This invariance imposes a change in the laws... |
1508.01725 | Angus Prain | Valerio Faraoni, Marianne Lapierre-L\'eonard and Angus Prain | Turnaround radius in an accelerated universe with quasi-local mass | Updated to accepted JCAP version | null | 10.1088/1475-7516/2015/10/013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply the Hawking-Hayward quasi-local energy construct to obtain in a
rigorous way the turnaround radius of cosmic structures in General Relativity.
A splitting of this quasi-local mass into local and cosmological parts
describes the interplay between local attraction and cosmological expansion.
| [
{
"created": "Fri, 7 Aug 2015 15:28:38 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Sep 2015 11:54:24 GMT",
"version": "v2"
}
] | 2015-10-14 | [
[
"Faraoni",
"Valerio",
""
],
[
"Lapierre-Léonard",
"Marianne",
""
],
[
"Prain",
"Angus",
""
]
] | We apply the Hawking-Hayward quasi-local energy construct to obtain in a rigorous way the turnaround radius of cosmic structures in General Relativity. A splitting of this quasi-local mass into local and cosmological parts describes the interplay between local attraction and cosmological expansion. |
1510.06668 | Javier Jarillo | Jose A. R. Cembranos (U. Complutense de Madrid), Alvaro de la
Cruz-Dombriz (ACGC U. of Cape Town) and Javier Jarillo (U. Complutense de
Madrid) | Thermodynamic analysis of non-linear Reissner-Nordstrom black holes | 9 pages, 2 figures, minor changes, published version at "Open
Questions in Black Hole Physics" special issue, Universe 2015, 1, 412-421 | Universe 2015, 1(3), 412-421 | 10.3390/universe1030412 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present article we study the Inverse Electrodynamics Model. This model
is a gauge and parity invariant non-linear Electrodynamics theory, which
respects the conformal invariance of standard Electrodynamics. This modified
Electrodynamics model, when minimally coupled to General Relativity, is
compatible with st... | [
{
"created": "Thu, 22 Oct 2015 16:06:25 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Nov 2015 15:12:02 GMT",
"version": "v2"
}
] | 2015-11-18 | [
[
"Cembranos",
"Jose A. R.",
"",
"U. Complutense de Madrid"
],
[
"de la Cruz-Dombriz",
"Alvaro",
"",
"ACGC U. of Cape Town"
],
[
"Jarillo",
"Javier",
"",
"U. Complutense de\n Madrid"
]
] | In the present article we study the Inverse Electrodynamics Model. This model is a gauge and parity invariant non-linear Electrodynamics theory, which respects the conformal invariance of standard Electrodynamics. This modified Electrodynamics model, when minimally coupled to General Relativity, is compatible with stat... |
1412.8607 | Yasumichi Sano | Yasumichi Sano and Hideyuki Tagoshi | Gravitational perturbation induced by a rotating ring around a Kerr
black hole | null | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The linear perturbation of a Kerr black hole induced by a rotating massive
circular ring is discussed by using the formalism by Teukolsky, Chrzanowski,
Cohen and Kegeles. In these formalism, the perturbed Weyl scalars, $\psi_0$ and
$\psi_4$, are first obtained from the Teukolsky equation. The perturbed metric
is obta... | [
{
"created": "Tue, 30 Dec 2014 11:37:50 GMT",
"version": "v1"
}
] | 2014-12-31 | [
[
"Sano",
"Yasumichi",
""
],
[
"Tagoshi",
"Hideyuki",
""
]
] | The linear perturbation of a Kerr black hole induced by a rotating massive circular ring is discussed by using the formalism by Teukolsky, Chrzanowski, Cohen and Kegeles. In these formalism, the perturbed Weyl scalars, $\psi_0$ and $\psi_4$, are first obtained from the Teukolsky equation. The perturbed metric is obtain... |
2305.18689 | Kyungmin Kim | Kyungmin Kim, Eungwang Seo, Chunglee Kim | Gravitational lensing aided luminosity distance estimation for compact
binary coalescences | 8 pages, 5 figures, 4 tables; Accepted by PRD | Phys. Rev. D 109, 043017 (2024) | 10.1103/PhysRevD.109.043017 | LIGO-P2200396 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The luminosity distance is a key observable of gravitational-wave (GW)
observations. We demonstrate how one can correctly retrieve the luminosity
distance of compact binary coalescences (CBCs) if the GW signal is strongly
lensed. We perform a proof-of-concept parameter estimation for the luminosity
distance supposing... | [
{
"created": "Tue, 30 May 2023 02:13:29 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Nov 2023 23:44:57 GMT",
"version": "v2"
},
{
"created": "Fri, 19 Jan 2024 06:12:26 GMT",
"version": "v3"
}
] | 2024-02-14 | [
[
"Kim",
"Kyungmin",
""
],
[
"Seo",
"Eungwang",
""
],
[
"Kim",
"Chunglee",
""
]
] | The luminosity distance is a key observable of gravitational-wave (GW) observations. We demonstrate how one can correctly retrieve the luminosity distance of compact binary coalescences (CBCs) if the GW signal is strongly lensed. We perform a proof-of-concept parameter estimation for the luminosity distance supposing (... |
1002.2568 | Remo Garattini | Remo Garattini | Gravitational Zero Point Energy induces Physical Observables | 3 pages. Contribution to the Proceedings of the 12th Marcel Grossman
Meeting | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the contribution of Zero Point Energy on the induced Cosmological
Constant and on the induced Electric/Magnetic charge in absence of matter
fields. The method is applicable to every spherically symmetric background.
Extensions to a generic $f(R) $ theory are also allowed. Only the graviton
appears to be f... | [
{
"created": "Fri, 12 Feb 2010 15:32:56 GMT",
"version": "v1"
}
] | 2010-02-15 | [
[
"Garattini",
"Remo",
""
]
] | We consider the contribution of Zero Point Energy on the induced Cosmological Constant and on the induced Electric/Magnetic charge in absence of matter fields. The method is applicable to every spherically symmetric background. Extensions to a generic $f(R) $ theory are also allowed. Only the graviton appears to be fun... |
gr-qc/0008042 | Hans-Peter Kunzle | Todd A. Oliynyk and H.P. Kunzle | Local existence proofs for the boundary value problem for static
spherically symmetric Einstein-Yang-Mills fields with compact gauge groups | 30 pages, LaTeX, misprints corrected, reference added | J.Math.Phys.43:2363-2393,2002 | 10.1063/1.1463216 | null | gr-qc | null | We prove local existence and uniqueness of static spherically symmetric
solutions of the Einstein-Yang-Mills equations for an arbitrary compact
semisimple gauge group in the so-called regular case. By this we mean the
equations obtained when the rotation group acts on the principal bundle on
which the Yang-Mills conn... | [
{
"created": "Thu, 17 Aug 2000 19:32:22 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Feb 2002 17:32:25 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Oliynyk",
"Todd A.",
""
],
[
"Kunzle",
"H. P.",
""
]
] | We prove local existence and uniqueness of static spherically symmetric solutions of the Einstein-Yang-Mills equations for an arbitrary compact semisimple gauge group in the so-called regular case. By this we mean the equations obtained when the rotation group acts on the principal bundle on which the Yang-Mills connec... |
gr-qc/9806042 | null | S. Capozziello, G. Lambiase, G. Scarpetta | Scalar perturbations in deflationary cosmological models | 6 pages, ISMC'98 (Potsdam), Latex file, sprocl.sty | null | null | null | gr-qc | null | We consider scalar perturbations of energy--density for a class of
cosmological models where an early phase of accelerated expansion evolves,
without any fine--tuning for graceful exit, towards the standard Friedman eras
of observed universe. The geometric procedure which generates such models
agrees with results for... | [
{
"created": "Tue, 9 Jun 1998 06:57:35 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Capozziello",
"S.",
""
],
[
"Lambiase",
"G.",
""
],
[
"Scarpetta",
"G.",
""
]
] | We consider scalar perturbations of energy--density for a class of cosmological models where an early phase of accelerated expansion evolves, without any fine--tuning for graceful exit, towards the standard Friedman eras of observed universe. The geometric procedure which generates such models agrees with results for s... |
gr-qc/0411041 | Chul-Moon Yoo | Hiroyuki Nakano, Yasunari Kurita, Kouji Ogawa, Chul-Moon Yoo | Quasinormal Ringing for Acoustic Black Holes at Low Temperature | 9 pages, 3 figures, PRD accepted version | Phys.Rev. D71 (2005) 084006 | 10.1103/PhysRevD.71.084006 | OCU-PHYS-221, AP-GR-20 | gr-qc | null | We investigate a condensed matter ``black hole'' analogue, taking the
Gross-Pitaevskii (GP) equation as a starting point. The linearized GP equation
corresponds to a wave equation on a black hole background, giving quasinormal
modes under some appropriate conditions. We suggest that we can know the
detailed character... | [
{
"created": "Tue, 9 Nov 2004 07:05:33 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Nov 2004 04:38:52 GMT",
"version": "v2"
},
{
"created": "Tue, 8 Feb 2005 09:45:45 GMT",
"version": "v3"
},
{
"created": "Fri, 13 May 2005 05:40:35 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Nakano",
"Hiroyuki",
""
],
[
"Kurita",
"Yasunari",
""
],
[
"Ogawa",
"Kouji",
""
],
[
"Yoo",
"Chul-Moon",
""
]
] | We investigate a condensed matter ``black hole'' analogue, taking the Gross-Pitaevskii (GP) equation as a starting point. The linearized GP equation corresponds to a wave equation on a black hole background, giving quasinormal modes under some appropriate conditions. We suggest that we can know the detailed characters ... |
gr-qc/9904015 | J. Alberto Lobo | S.M. Merkowitz, J.A. Lobo and M.A. Serrano | Errors on the inverse problem solution for a noisy spherical
gravitational wave antenna | 13 pages, 4 figures, LaTeX2e, IOP style, submitted to CQG | Class.Quant.Grav. 16 (1999) 3035-3046 | 10.1088/0264-9381/16/10/301 | null | gr-qc | null | A single spherical antenna is capable of measuring the direction and
polarization of a gravitational wave. It is possible to solve the inverse
problem using only linear algebra even in the presence of noise. The simplicity
of this solution enables one to explore the error on the solution using
standard techniques. In... | [
{
"created": "Tue, 6 Apr 1999 15:47:27 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Merkowitz",
"S. M.",
""
],
[
"Lobo",
"J. A.",
""
],
[
"Serrano",
"M. A.",
""
]
] | A single spherical antenna is capable of measuring the direction and polarization of a gravitational wave. It is possible to solve the inverse problem using only linear algebra even in the presence of noise. The simplicity of this solution enables one to explore the error on the solution using standard techniques. In t... |
gr-qc/9806050 | Guido Magnano | Guido Magnano and Leszek M. Sokolowski | Can the local stress-energy conservation laws be derived solely from
field equations? | 5 pages, plain Tex, no figures, to appear in GRG Journal | Gen.Rel.Grav. 30 (1998) 1281-1288 | 10.1023/A:1026655230534 | null | gr-qc | null | According to a recent suggestion [1], the energy--momentum tensor for
gravitating fields can be computed through a suitable rearrangement of the
matter field equations, without relying on the variational definition. We show
that the property observed by Accioly et al. in [1] is the consequence of a
general identity, ... | [
{
"created": "Wed, 10 Jun 1998 11:36:52 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Magnano",
"Guido",
""
],
[
"Sokolowski",
"Leszek M.",
""
]
] | According to a recent suggestion [1], the energy--momentum tensor for gravitating fields can be computed through a suitable rearrangement of the matter field equations, without relying on the variational definition. We show that the property observed by Accioly et al. in [1] is the consequence of a general identity, wh... |
2408.05257 | Benedikt Miethke | Benedikt Miethke | $C^0$-inextendibility of the Kasner spacetime | This is a Master's thesis written at the Universit\"at Wien, Austria,
supervised by Jan Sbierski. The original document can be found under
https://utheses.univie.ac.at/detail/72128/# | null | 10.25365/thesis.76304 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The Kasner spacetime is a cosmological model of an anisotropic expanding
universe without matter and is an exact solution of the Einstein vacuum
equations Ric(g) = 0. It is manifestly inextendible as a Lorentzian manifold
with a twice differentiable metric. In this thesis we proof that it is even
inextendible as a Lo... | [
{
"created": "Fri, 9 Aug 2024 08:33:49 GMT",
"version": "v1"
}
] | 2024-08-13 | [
[
"Miethke",
"Benedikt",
""
]
] | The Kasner spacetime is a cosmological model of an anisotropic expanding universe without matter and is an exact solution of the Einstein vacuum equations Ric(g) = 0. It is manifestly inextendible as a Lorentzian manifold with a twice differentiable metric. In this thesis we proof that it is even inextendible as a Lore... |
1010.2054 | Qasem Exirifard | Qasem Exirifard | Cosmological birefringent constraints on light | A reference added, a sentence corrected | Phys.Lett.B699:1-4,2011 | 10.1016/j.physletb.2011.03.046 | IPM/P-2010/034 | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the birefringent in the vacuum for light at the leading and
sub-leading orders for the CPT-even part of the SME. We report that all the LIV
coefficients absent in the leading order, but the isotropic one, contributes to
the sub-leading order birefringent. We consider models free of the first order
birefr... | [
{
"created": "Mon, 11 Oct 2010 10:15:15 GMT",
"version": "v1"
},
{
"created": "Sun, 31 Oct 2010 10:13:15 GMT",
"version": "v2"
},
{
"created": "Tue, 15 Mar 2011 14:34:11 GMT",
"version": "v3"
}
] | 2011-04-20 | [
[
"Exirifard",
"Qasem",
""
]
] | We calculate the birefringent in the vacuum for light at the leading and sub-leading orders for the CPT-even part of the SME. We report that all the LIV coefficients absent in the leading order, but the isotropic one, contributes to the sub-leading order birefringent. We consider models free of the first order birefrin... |
gr-qc/0312067 | Valentin Gladush | Valentin Gladush | The variational principle and effective action for a spherical dust
shell | 16 pages, LaTex | Gen.Rel.Grav. 36 (2004) 1821-1839 | 10.1023/B:GERG.0000035954.84330.40 | null | gr-qc | null | The variational principle for a spherical configuration consisting of a thin
spherical dust shell in gravitational field is constructed. The principle is
consistent with the boundary-value problem of the corresponding Euler-Lagrange
equations, and leads to ``natural boundary conditions''. These conditions and
the fie... | [
{
"created": "Mon, 15 Dec 2003 14:26:51 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Gladush",
"Valentin",
""
]
] | The variational principle for a spherical configuration consisting of a thin spherical dust shell in gravitational field is constructed. The principle is consistent with the boundary-value problem of the corresponding Euler-Lagrange equations, and leads to ``natural boundary conditions''. These conditions and the field... |
2003.09841 | Sushant Ghosh Prof | Sushant G. Ghosh and Sunil D. Maharaj | Radiating black holes in the novel 4D Einstein-Gauss-Bonnet gravity | 9 pages, no figures | Phys. Dark Univ. 30, (2020) 100687 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently Glavan and Lin [Phys. Rev. Lett. 124, 081301 (2020)] formulated a
novel Einstein-Gauss-Bonnet gravity in which the Gauss-Bonnet coupling has been
rescaled as $\alpha/(D-4)$ and the $4D$ theory is defined as the limit $D
\rightarrow 4$, which preserves the number degrees of freedom thereby free from
the Ostro... | [
{
"created": "Sun, 22 Mar 2020 08:56:03 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Jul 2020 07:23:09 GMT",
"version": "v2"
}
] | 2020-07-24 | [
[
"Ghosh",
"Sushant G.",
""
],
[
"Maharaj",
"Sunil D.",
""
]
] | Recently Glavan and Lin [Phys. Rev. Lett. 124, 081301 (2020)] formulated a novel Einstein-Gauss-Bonnet gravity in which the Gauss-Bonnet coupling has been rescaled as $\alpha/(D-4)$ and the $4D$ theory is defined as the limit $D \rightarrow 4$, which preserves the number degrees of freedom thereby free from the Ostrogr... |
1606.07900 | Carlos A. R. Herdeiro | Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu | Violations of the Kerr and Reissner-Nordstrom bounds: horizon versus
asymptotic quantities | 13 pages, 8 figures, To appear in Phys. Rev. D | null | 10.1103/PhysRevD.94.024006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A central feature of the most elementary rotating black hole (BH) solution in
General Relativity is the Kerr bound, which, for vacuum Kerr BHs, can be
expressed either in terms of the ADM or the horizon "charges". This bound,
however, is not a fundamental properties of General Relativity and stationary,
asymptoticall... | [
{
"created": "Sat, 25 Jun 2016 12:13:39 GMT",
"version": "v1"
}
] | 2016-08-03 | [
[
"Delgado",
"Jorge F. M.",
""
],
[
"Herdeiro",
"Carlos A. R.",
""
],
[
"Radu",
"Eugen",
""
]
] | A central feature of the most elementary rotating black hole (BH) solution in General Relativity is the Kerr bound, which, for vacuum Kerr BHs, can be expressed either in terms of the ADM or the horizon "charges". This bound, however, is not a fundamental properties of General Relativity and stationary, asymptotically ... |
2403.10956 | Bivudutta Mishra Dr. | Santosh V Lohakare, B.Mishra | Accelerating Cosmological Model in Nonmetricity Gravity with Boundary
Term | 11 pages, 6 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This study explores the cosmological implications of a modified $f(Q, B)$
gravity model, incorporating both the nonmetricity scalar ($Q$) and the
boundary term ($B$). A generic connection ($\Gamma_{\mu \nu}^{\alpha}$) has
been used to define the four-dimensional metric tensor and the covariant
derivative ($\nabla_{\m... | [
{
"created": "Sat, 16 Mar 2024 15:54:07 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Jul 2024 06:38:47 GMT",
"version": "v2"
}
] | 2024-07-29 | [
[
"Lohakare",
"Santosh V",
""
],
[
"Mishra",
"B.",
""
]
] | This study explores the cosmological implications of a modified $f(Q, B)$ gravity model, incorporating both the nonmetricity scalar ($Q$) and the boundary term ($B$). A generic connection ($\Gamma_{\mu \nu}^{\alpha}$) has been used to define the four-dimensional metric tensor and the covariant derivative ($\nabla_{\mu}... |
gr-qc/0310055 | Kiyoshi Shiraishi | Nahomi Kan and Kiyoshi Shiraishi (Yamaguchi University) | Induced Gravity from Theory Space | 14 pages, 5 figures, RevTeX4 | Prog.Theor.Phys. 111 (2004) 745-755 | 10.1143/PTP.111.745 | Guchi-TP-020 | gr-qc hep-th math-ph math.MP | null | The mass spectrum of a model constructed in a theory space is expressed by
eigenvalues of the Laplacian on the graph structure of the theory space. The
nature of the one-loop UV divergence in the vacuum energy is then controlled
only by the degree matrix of the graph. Using these facts, we can construct
models of ind... | [
{
"created": "Fri, 10 Oct 2003 11:49:27 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Kan",
"Nahomi",
"",
"Yamaguchi University"
],
[
"Shiraishi",
"Kiyoshi",
"",
"Yamaguchi University"
]
] | The mass spectrum of a model constructed in a theory space is expressed by eigenvalues of the Laplacian on the graph structure of the theory space. The nature of the one-loop UV divergence in the vacuum energy is then controlled only by the degree matrix of the graph. Using these facts, we can construct models of induc... |
1809.07216 | Neven Bili\'c | Neven Bilic, Dragoljub D. Dimitrijevic, Goran S. Djordjevic, Milan
Milosevic, Marko Stojanovic | Tachyon inflation in the holographic braneworld | 27 pages 6 figures, substantially revised version accepted for
publication in JCAP. A comment on primordial non-Gaussianity added, an
appendix on cosmological perturbations added, a minor mistake in the equation
for spectral density corrected resulting in slight modifications of the
plots, 7 references added, t... | null | 10.1088/1475-7516/2019/08/034 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A model of tachyon inflation is proposed in the framework of holographic
cosmology. The model is based on a holographic braneworld scenario with a
D3-brane located at the holographic boundary of an asymptotic ADS$_5$ bulk. The
tachyon field that drives inflation is represented by a DBI action on the
brane. We solve t... | [
{
"created": "Wed, 19 Sep 2018 14:25:39 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Dec 2018 16:02:56 GMT",
"version": "v2"
},
{
"created": "Mon, 11 Feb 2019 13:09:19 GMT",
"version": "v3"
},
{
"created": "Fri, 16 Aug 2019 09:29:36 GMT",
"version": "v4"
}
] | 2019-09-04 | [
[
"Bilic",
"Neven",
""
],
[
"Dimitrijevic",
"Dragoljub D.",
""
],
[
"Djordjevic",
"Goran S.",
""
],
[
"Milosevic",
"Milan",
""
],
[
"Stojanovic",
"Marko",
""
]
] | A model of tachyon inflation is proposed in the framework of holographic cosmology. The model is based on a holographic braneworld scenario with a D3-brane located at the holographic boundary of an asymptotic ADS$_5$ bulk. The tachyon field that drives inflation is represented by a DBI action on the brane. We solve the... |
1404.5808 | Leszek Soko{\l}owski | Leszek M. Soko{\l}owski and Zdzis{\l}aw A. Golda | The local and global geometrical aspects of the twin paradox in static
spacetimes: II. Reissner--Nordstr\"{o}m and ultrastatic metrics | null | null | 10.5506/APhysPolB.45.1713 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is a consecutive paper on the timelike geodesic structure of static
spherically symmetric spacetimes. First we show that for a stable circular
orbit (if it exists) in any of these spacetimes all the infinitesimally close
to it timelike geodesics constructed with the aid of the general geodesic
deviation vector h... | [
{
"created": "Wed, 23 Apr 2014 12:54:54 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Sokołowski",
"Leszek M.",
""
],
[
"Golda",
"Zdzisław A.",
""
]
] | This is a consecutive paper on the timelike geodesic structure of static spherically symmetric spacetimes. First we show that for a stable circular orbit (if it exists) in any of these spacetimes all the infinitesimally close to it timelike geodesics constructed with the aid of the general geodesic deviation vector hav... |
1411.6589 | Iuri Baranov P | J. A. S. Lima, I. P. Baranov | Gravitationally Induced Particle Production: Thermodynamics and Kinetic
Theory | 10 pages, no figures | Physical Review D 90, 043515 (2014) | 10.1103/PhysRevD.90.043515 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A relativistic kinetic description for the irreversible thermodynamic process
of gravitationally induced particle production is proposed in the context of an
expanding Friedmann-Robertson-Walker (FRW) geometry. We show that the covariant
thermodynamic treatment referred to as "adiabatic" particle production provoked
... | [
{
"created": "Mon, 24 Nov 2014 19:50:10 GMT",
"version": "v1"
}
] | 2014-11-25 | [
[
"Lima",
"J. A. S.",
""
],
[
"Baranov",
"I. P.",
""
]
] | A relativistic kinetic description for the irreversible thermodynamic process of gravitationally induced particle production is proposed in the context of an expanding Friedmann-Robertson-Walker (FRW) geometry. We show that the covariant thermodynamic treatment referred to as "adiabatic" particle production provoked by... |
gr-qc/9505024 | null | Viqar Husain, Erik A. Martinez and Dario Nunez | On critical behaviour in gravitational collapse | 11 pages, RevTex, 2 figures (available from VH) | Class.Quant.Grav. 13 (1996) 1183-1190 | 10.1088/0264-9381/13/5/028 | Alberta-Thy-34-94 | gr-qc hep-th | null | We give an approach to studying the critical behaviour that has been observed
in numerical studies of gravitational collapse. These studies suggest, among
other things, that black holes initially form with infinitesimal mass. We show
generally how a black hole mass formula can be extracted from a transcendental
equat... | [
{
"created": "Tue, 16 May 1995 18:23:59 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Husain",
"Viqar",
""
],
[
"Martinez",
"Erik A.",
""
],
[
"Nunez",
"Dario",
""
]
] | We give an approach to studying the critical behaviour that has been observed in numerical studies of gravitational collapse. These studies suggest, among other things, that black holes initially form with infinitesimal mass. We show generally how a black hole mass formula can be extracted from a transcendental equatio... |
gr-qc/9412048 | Hajicek | P. Hajicek, A. Higuchi and J. Tolar | Group quantization of parametrized systems II. Pasting Hilbert spaces | 35 pages, latex, no figures | J.Math.Phys.36:4639-4666,1995 | 10.1063/1.530912 | BUTP-94/22 | gr-qc | null | The method of group quantization described in the preceeding paper I is
extended so that it becomes applicable to some parametrized systems that do not
admit a global transversal surface. A simple completely solvable toy system is
studied that admits a pair of maximal transversal surfaces intersecting all
orbits. The... | [
{
"created": "Sun, 18 Dec 1994 07:15:42 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Hajicek",
"P.",
""
],
[
"Higuchi",
"A.",
""
],
[
"Tolar",
"J.",
""
]
] | The method of group quantization described in the preceeding paper I is extended so that it becomes applicable to some parametrized systems that do not admit a global transversal surface. A simple completely solvable toy system is studied that admits a pair of maximal transversal surfaces intersecting all orbits. The c... |
1906.04708 | Frans Klinkhamer | F.R. Klinkhamer, Z.L. Wang | Asymmetric nonsingular bounce from a dynamic scalar field | 9 pages, 9 figures, v4: published version | LHEP 3, 9 (2019) | 10.31526/lhep.3.2019.132 | KA-TP-11-2019 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a dynamical model for a time-asymmetric nonsingular bounce with a
post-bounce change of the effective equation-of-state parameter. Specifically,
we consider a scalar-field model with a time-reversal-noninvariant effective
potential.
| [
{
"created": "Tue, 11 Jun 2019 17:20:40 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Jun 2019 17:22:13 GMT",
"version": "v2"
},
{
"created": "Thu, 15 Aug 2019 14:46:04 GMT",
"version": "v3"
},
{
"created": "Wed, 4 Sep 2019 09:46:32 GMT",
"version": "v4"
}
] | 2019-09-24 | [
[
"Klinkhamer",
"F. R.",
""
],
[
"Wang",
"Z. L.",
""
]
] | We present a dynamical model for a time-asymmetric nonsingular bounce with a post-bounce change of the effective equation-of-state parameter. Specifically, we consider a scalar-field model with a time-reversal-noninvariant effective potential. |
0902.0660 | Bin Wang | Jian-Hua he, Bin Wang, Y. P. Jing | Effects of dark sectors' mutual interaction on the growth of structures | 15 pages, 4 figures, revised version, to appear in JCAP | JCAP 0907:030,2009 | 10.1088/1475-7516/2009/07/030 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a general formalism to study the growth of dark matter
perturbations when dark energy perturbations and interactions between dark
sectors are present. We show that dynamical stability of the growth of
structure depends on the type of coupling between dark sectors. By taking the
appropriate coupling to ensu... | [
{
"created": "Wed, 4 Feb 2009 05:34:27 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Jul 2009 14:07:15 GMT",
"version": "v2"
},
{
"created": "Mon, 6 Jul 2009 15:11:58 GMT",
"version": "v3"
}
] | 2009-07-24 | [
[
"he",
"Jian-Hua",
""
],
[
"Wang",
"Bin",
""
],
[
"Jing",
"Y. P.",
""
]
] | We present a general formalism to study the growth of dark matter perturbations when dark energy perturbations and interactions between dark sectors are present. We show that dynamical stability of the growth of structure depends on the type of coupling between dark sectors. By taking the appropriate coupling to ensure... |
1907.08788 | Marcello Ortaggio | Sigbj{\o}rn Hervik, Marcello Ortaggio | Universal Black Holes | 20 pages. v2: abstract, introduction (sec. 1) and final discussion
(sec. 9) improved, a few comments and refs. added, appendix B extended (with
field eqs. for quadratic gravity). Results unchanged | J. High Energ. Phys. 2020, 47 (2020) | 10.1007/JHEP02(2020)047 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that a generalized Schwarzschild-like ansatz can be consistently
employed to construct $d$-dimensional static vacuum black hole solutions in any
metric theory of gravity for which the Lagrangian is a scalar invariant
constructed from the Riemann tensor and its covariant derivatives of arbitrary
order. Namely... | [
{
"created": "Sat, 20 Jul 2019 09:59:08 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Feb 2020 10:00:51 GMT",
"version": "v2"
}
] | 2020-02-20 | [
[
"Hervik",
"Sigbjørn",
""
],
[
"Ortaggio",
"Marcello",
""
]
] | We prove that a generalized Schwarzschild-like ansatz can be consistently employed to construct $d$-dimensional static vacuum black hole solutions in any metric theory of gravity for which the Lagrangian is a scalar invariant constructed from the Riemann tensor and its covariant derivatives of arbitrary order. Namely, ... |
1407.6573 | Alexander Graham | Alexander A. H. Graham and Rahul Jha | Stationary Black Holes with Time-Dependent Scalar Fields | 5 pages. v2: typos corrected, references added and some additional
comments. Matches published version | Phys. Rev. D 90, 041501 (2014) | 10.1103/PhysRevD.90.041501 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has been well known since the 1970s that stationary black holes do not
generically support scalar hair. Most of the no-hair theorems which support
this depend crucially upon the assumption that the scalar field has no time
dependence. Here we fill in this omission by ruling out the existence of
stationary black ho... | [
{
"created": "Thu, 24 Jul 2014 13:38:55 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Sep 2014 14:08:12 GMT",
"version": "v2"
}
] | 2014-09-05 | [
[
"Graham",
"Alexander A. H.",
""
],
[
"Jha",
"Rahul",
""
]
] | It has been well known since the 1970s that stationary black holes do not generically support scalar hair. Most of the no-hair theorems which support this depend crucially upon the assumption that the scalar field has no time dependence. Here we fill in this omission by ruling out the existence of stationary black hole... |
2112.13069 | Josh Mathews | Josh Mathews, Adam Pound and Barry Wardell | Self-Force Calculations with a Spinning Secondary | 27 pages, 6 figures | null | 10.1103/PhysRevD.105.084031 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We compute the linear metric perturbation to a Schwarzschild black hole
generated by a spinning compact object, specialising to circular equatorial
orbits with an (anti-)aligned spin vector. We derive a two-timescale expansion
of the field equations, with an attendant waveform-generation framework, that
includes all ... | [
{
"created": "Fri, 24 Dec 2021 14:04:06 GMT",
"version": "v1"
}
] | 2022-05-04 | [
[
"Mathews",
"Josh",
""
],
[
"Pound",
"Adam",
""
],
[
"Wardell",
"Barry",
""
]
] | We compute the linear metric perturbation to a Schwarzschild black hole generated by a spinning compact object, specialising to circular equatorial orbits with an (anti-)aligned spin vector. We derive a two-timescale expansion of the field equations, with an attendant waveform-generation framework, that includes all ef... |
1403.2325 | Felipe Asenjo | Sergio A. Hojman, Felipe A. Asenjo and Carlos A. Rubio | Quantization of the Universe as a Dirac Particle: Geometrical
Unification of Gravitation, Dark Energy and Multiverses | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Friedmann--Robertson--Walker Universe is studied with a dark energy
component represented by a quintessence field. The Lagrangian for this system,
hereafter called the Friedmann--Robertson--Walker--quintessence (FRWq) system,
is presented. It is shown that the classical Lagrangian reproduces the usual
two (second o... | [
{
"created": "Mon, 10 Mar 2014 18:06:56 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Aug 2017 17:21:14 GMT",
"version": "v2"
}
] | 2017-08-23 | [
[
"Hojman",
"Sergio A.",
""
],
[
"Asenjo",
"Felipe A.",
""
],
[
"Rubio",
"Carlos A.",
""
]
] | A Friedmann--Robertson--Walker Universe is studied with a dark energy component represented by a quintessence field. The Lagrangian for this system, hereafter called the Friedmann--Robertson--Walker--quintessence (FRWq) system, is presented. It is shown that the classical Lagrangian reproduces the usual two (second ord... |
gr-qc/9605043 | null | Nivaldo A. Lemos (Center for Theoretical Physics, MIT) | Reply to "A Comment on Singularities in Quantum Cosmology" | 6 pages, LaTex | null | null | MIT-CTP-2535 | gr-qc | null | We argue that the reasonings that underlie a recent comment by Gotay and
Demaret [1, gr-qc/9605025] are defective. We maintain that, contrary to what
they assert, our previous papers [2,3,4] are correct and indeed disprove their
conjecture that quantum cosmological singularities are predetermined on the
classical lev... | [
{
"created": "Mon, 20 May 1996 16:44:46 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Lemos",
"Nivaldo A.",
"",
"Center for Theoretical Physics, MIT"
]
] | We argue that the reasonings that underlie a recent comment by Gotay and Demaret [1, gr-qc/9605025] are defective. We maintain that, contrary to what they assert, our previous papers [2,3,4] are correct and indeed disprove their conjecture that quantum cosmological singularities are predetermined on the classical level... |
1712.05712 | Joan Josep Ferrando | Bartolom\'e Coll | Epistemic relativity: An experimental approach to physics | 19 pages; 12 figures; in Relativistic Geodesy: Foundations and
Application. Proceedings of 609 WE-Heraeus Seminar (2016) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recent concept of {\em relativistic positioning system} (RPS) has opened
the possibility of making Relativity the {\em general standard frame} in which
to state any physical problem, theoretical or experimental.
Because the velocity of propagation of the information is finite, {\em
epistemic relativity} propose... | [
{
"created": "Fri, 15 Dec 2017 15:25:51 GMT",
"version": "v1"
}
] | 2017-12-18 | [
[
"Coll",
"Bartolomé",
""
]
] | The recent concept of {\em relativistic positioning system} (RPS) has opened the possibility of making Relativity the {\em general standard frame} in which to state any physical problem, theoretical or experimental. Because the velocity of propagation of the information is finite, {\em epistemic relativity} proposes to... |
gr-qc/9512035 | Daniel C. Galehouse | Daniel C. Galehouse (University of Akron) | Quantum-conformal Field theory | 40 pages, 1 postscript figure, latex/revtex format, 89090b+1811b | null | null | QCFT-3.3-12/18/95 | gr-qc quant-ph | null | A theoretical study is made of conformal factors in certain types of physical
theories based on classical differential geometry. Analysis of quantum versions
of Weyl's theory suggest that similar field equations should be available in
four, five and more dimensions. Various conformal factors are associated with
the w... | [
{
"created": "Tue, 19 Dec 1995 15:35:40 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Galehouse",
"Daniel C.",
"",
"University of Akron"
]
] | A theoretical study is made of conformal factors in certain types of physical theories based on classical differential geometry. Analysis of quantum versions of Weyl's theory suggest that similar field equations should be available in four, five and more dimensions. Various conformal factors are associated with the wav... |
1905.03457 | LSC P&P Committee | The LIGO Scientific Collaboration and the Virgo Collaboration: B. P.
Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C.
Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N.
Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, G. Allen, A. Allocca, M.
A. Aloy, P. A. Alt... | All-sky search for short gravitational-wave bursts in the second
Advanced LIGO and Advanced Virgo run | 10 pages, 6 figures | Phys. Rev. D 100, 024017 (2019) | 10.1103/PhysRevD.100.024017 | LIGO-P1800308 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the results of a search for short-duration gravitational-wave
transients in the data from the second observing run of Advanced LIGO and
Advanced Virgo. We search for gravitational-wave transients with a duration of
milliseconds to approximately one second in the 32-4096 Hz frequency band with
minimal assum... | [
{
"created": "Thu, 9 May 2019 06:44:25 GMT",
"version": "v1"
}
] | 2019-07-17 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abbott",
"B. P.",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Abraham",
"S.",
""
],
[
"Acernese",
"F.",
... | We present the results of a search for short-duration gravitational-wave transients in the data from the second observing run of Advanced LIGO and Advanced Virgo. We search for gravitational-wave transients with a duration of milliseconds to approximately one second in the 32-4096 Hz frequency band with minimal assumpt... |
1601.07634 | Liu Zhao | Kun Meng and Liu Zhao | C-metric solution for conformal gravity with a conformally coupled
scalar field | 21pages, 27 pdf figures. v2: Typos, corrections + extra ref. v3:
Final version to appear in Ann. Phys | Annals Phys. 377 (2017) 466-483 | 10.1016/j.aop.2017.01.001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The C-metric solution of conformal gravity with a conformally coupled scalar
field is presented. The solution belongs to the class of Petrov type D
spacetimes and is conformal to the standard AdS C-metric appeared in vacuum
Einstein gravity. For all parameter ranges, we identify some of the physically
interesting sta... | [
{
"created": "Thu, 28 Jan 2016 03:58:59 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Jan 2016 21:37:17 GMT",
"version": "v2"
},
{
"created": "Fri, 6 Jan 2017 11:09:58 GMT",
"version": "v3"
}
] | 2018-07-30 | [
[
"Meng",
"Kun",
""
],
[
"Zhao",
"Liu",
""
]
] | The C-metric solution of conformal gravity with a conformally coupled scalar field is presented. The solution belongs to the class of Petrov type D spacetimes and is conformal to the standard AdS C-metric appeared in vacuum Einstein gravity. For all parameter ranges, we identify some of the physically interesting stati... |
2108.01098 | Amitabh Virmani | Sk Jahanur Hoque and Amitabh Virmani | The Kerr-de Sitter spacetime in Bondi coordinates | 24 pages, 3 figures, 5 ancillary files; comments welcome | Class. Quantum Grav. 38 (2021) 225002 | 10.1088/1361-6382/ac2c1f | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use zero angular momentum null geodesics in the Kerr-de Sitter spacetime
to transform the metric in a generalised Bondi coordinate system. We write the
metric components explicitly. Next, we choose the radial coordinate to be the
areal coordinate and write the asymptotic metric in the Bondi-Sachs gauge.
| [
{
"created": "Mon, 2 Aug 2021 18:00:20 GMT",
"version": "v1"
}
] | 2021-10-20 | [
[
"Hoque",
"Sk Jahanur",
""
],
[
"Virmani",
"Amitabh",
""
]
] | We use zero angular momentum null geodesics in the Kerr-de Sitter spacetime to transform the metric in a generalised Bondi coordinate system. We write the metric components explicitly. Next, we choose the radial coordinate to be the areal coordinate and write the asymptotic metric in the Bondi-Sachs gauge. |
1510.02810 | Alberto Escalante | Alberto Escalante (Puebla U., Mexico), Omar Rodr\'iguez-Tzompantzi
(Puebla U., Mexico) | Dirac's and Generalized Faddeev-Jackiw brackets for Einstein's theory in
G $\rightarrow 0$ limit | null | null | 10.1016/j.aop.2015.10.021 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper the Dirac and Faddeev-Jackiw formulation for Einstein's theory
in the $G \rightarrow 0$ limit is performed; the fundamental Dirac's and
Faddeev-Jackiw brackets for the theory are obtained. First, the Dirac brackets
are constructed by eliminating the second class constraints remaining the first
class one... | [
{
"created": "Tue, 4 Aug 2015 05:58:00 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Oct 2015 15:43:06 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Oct 2015 02:48:35 GMT",
"version": "v3"
}
] | 2016-01-20 | [
[
"Escalante",
"Alberto",
"",
"Puebla U., Mexico"
],
[
"Rodríguez-Tzompantzi",
"Omar",
"",
"Puebla U., Mexico"
]
] | In this paper the Dirac and Faddeev-Jackiw formulation for Einstein's theory in the $G \rightarrow 0$ limit is performed; the fundamental Dirac's and Faddeev-Jackiw brackets for the theory are obtained. First, the Dirac brackets are constructed by eliminating the second class constraints remaining the first class ones,... |
gr-qc/0607086 | Martin Tajmar | M. Tajmar, C.J. de Matos | Gravitomagnetic Fields in Rotating Superconductors to Solve Tate's
Cooper Pair Mass Anomaly | null | AIPConf.Proc.813:1415-1420,2006 | 10.1063/1.2169327 | null | gr-qc | null | Superconductors have often been used to claim gravitational anomalies in the
context of breakthrough propulsion. The experiments could not be reproduced by
others up to now, and the theories were either shown to be wrong or are often
based on difficult to prove assumptions. We will show that superconductors
indeed co... | [
{
"created": "Thu, 20 Jul 2006 22:46:15 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Tajmar",
"M.",
""
],
[
"de Matos",
"C. J.",
""
]
] | Superconductors have often been used to claim gravitational anomalies in the context of breakthrough propulsion. The experiments could not be reproduced by others up to now, and the theories were either shown to be wrong or are often based on difficult to prove assumptions. We will show that superconductors indeed coul... |
1111.1677 | Francois Foucart | Francois Foucart, Matthew D. Duez, Lawrence E. Kidder, Mark A. Scheel,
Bela Szilagyi and Saul A. Teukolsky | Black hole-neutron star mergers for 10 solar mass black holes | 11 pages, 11 figures - Updated to match published version | Phys. Rev. D 85, 044015 (2012) | 10.1103/PhysRevD.85.044015 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativistic simulations of black hole-neutron star mergers have
currently been limited to low-mass black holes (less than 7 solar mass), even
though population synthesis models indicate that a majority of mergers might
involve more massive black holes (10 solar mass or more). We present the first
general rel... | [
{
"created": "Mon, 7 Nov 2011 19:00:25 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Mar 2012 17:47:32 GMT",
"version": "v2"
}
] | 2012-03-13 | [
[
"Foucart",
"Francois",
""
],
[
"Duez",
"Matthew D.",
""
],
[
"Kidder",
"Lawrence E.",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Szilagyi",
"Bela",
""
],
[
"Teukolsky",
"Saul A.",
""
]
] | General relativistic simulations of black hole-neutron star mergers have currently been limited to low-mass black holes (less than 7 solar mass), even though population synthesis models indicate that a majority of mergers might involve more massive black holes (10 solar mass or more). We present the first general relat... |
gr-qc/0610139 | Manuel Tessmer | Manuel Tessmer and Achamveedu Gopakumar | Accurate and efficient gravitational waveforms for certain galactic
compact binaries | 10 pages, 7 figures, to be published in MNRAS | Mon.Not.Roy.Astron.Soc.374:721-728,2007 | 10.1111/j.1365-2966.2006.11179.x | null | gr-qc | null | Stellar-mass compact binaries in eccentric orbits are almost guaranteed
sources of gravitational waves for Laser Interferometer Space Antenna. We
present a prescription to compute accurate and efficient gravitational-wave
polarizations associated with bound compact binaries of arbitrary eccentricity
and mass ratio mo... | [
{
"created": "Fri, 27 Oct 2006 09:48:42 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Tessmer",
"Manuel",
""
],
[
"Gopakumar",
"Achamveedu",
""
]
] | Stellar-mass compact binaries in eccentric orbits are almost guaranteed sources of gravitational waves for Laser Interferometer Space Antenna. We present a prescription to compute accurate and efficient gravitational-wave polarizations associated with bound compact binaries of arbitrary eccentricity and mass ratio movi... |
1609.01310 | Ikjyot Singh Kohli | Ikjyot Singh Kohli | Dynamics of a Vacuum Bianchi Type V Universe with an Arbitrary
Cosmological Constant | Updated paper, and made minor corrections | null | null | null | gr-qc math-ph math.DS math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we describe the dynamics of a Bianchi Type V vacuum universe
with an arbitrary cosmological constant. We begin by using an orthonormal frame
approach to write Einstein's field equations as a coupled system of first-order
ordinary differential equations. The equilibrium points of the resulting
dynamical... | [
{
"created": "Mon, 5 Sep 2016 20:09:14 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Nov 2016 14:59:33 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Nov 2016 15:14:15 GMT",
"version": "v3"
},
{
"created": "Tue, 11 Apr 2017 13:55:38 GMT",
"version": "v4"
}
] | 2017-04-12 | [
[
"Kohli",
"Ikjyot Singh",
""
]
] | In this paper, we describe the dynamics of a Bianchi Type V vacuum universe with an arbitrary cosmological constant. We begin by using an orthonormal frame approach to write Einstein's field equations as a coupled system of first-order ordinary differential equations. The equilibrium points of the resulting dynamical s... |
2303.03676 | Evgenii Ievlev | E. Ievlev, Michael R.R. Good | Thermal Larmor radiation | 9 pages, 3 figures | Progress of Theoretical and Experimental Physics, ptae042, (2024) | 10.1093/ptep/ptae042 | null | gr-qc physics.class-ph quant-ph | http://creativecommons.org/licenses/by/4.0/ | Thermal radiation from a moving point charge is found. The calculation is
entirely from a classical point of view, but is shown to have an immediate
connection to quantum field theory.
| [
{
"created": "Tue, 7 Mar 2023 06:25:00 GMT",
"version": "v1"
}
] | 2024-03-26 | [
[
"Ievlev",
"E.",
""
],
[
"Good",
"Michael R. R.",
""
]
] | Thermal radiation from a moving point charge is found. The calculation is entirely from a classical point of view, but is shown to have an immediate connection to quantum field theory. |
1812.05305 | Hee-Suk Cho | Yong-Beom Choi, Hee-Suk Cho, Chang-Hwan Lee, Young-Min Kim | Measurement of Tidal Deformability in the Gravitational Wave Parameter
Estimation for Nonspinning Binary Neutron Star Mergers | 4 pages, 2 figures, matching the published version in JKPS | jkps.74.842 (2019) | 10.3938/jkps.74.842 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the main targets for ground-based gravitational wave (GW) detectors
such as Advanced LIGO (Laser Interferometer Gravitational wave Observatory) and
Virgo is coalescences of neutron star (NS) binaries. Even though a NS's
macroscopic properties such as mass and radius have been obtained from
electro-magnetic wav... | [
{
"created": "Thu, 13 Dec 2018 07:53:43 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Apr 2019 05:47:03 GMT",
"version": "v2"
}
] | 2019-05-09 | [
[
"Choi",
"Yong-Beom",
""
],
[
"Cho",
"Hee-Suk",
""
],
[
"Lee",
"Chang-Hwan",
""
],
[
"Kim",
"Young-Min",
""
]
] | One of the main targets for ground-based gravitational wave (GW) detectors such as Advanced LIGO (Laser Interferometer Gravitational wave Observatory) and Virgo is coalescences of neutron star (NS) binaries. Even though a NS's macroscopic properties such as mass and radius have been obtained from electro-magnetic wave ... |
1106.0782 | Aaron Zimmerman | Aaron Zimmerman, Yanbei Chen | New Generic Ringdown Frequencies at the Birth of a Kerr Black Hole | 17 pages, 8 figures. Numerical analysis corrected, references added;
reflects published version | Phys. Rev. D 84, 084012 (2011) | 10.1103/PhysRevD.84.084012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss a new ringdown frequency mode for vacuum perturbations of the Kerr
black hole. We evolve initial data for the vacuum radial Teukolsky equation
using a near horizon approximation, and find a frequency mode analogous to that
found in a recent study of radiation generated by a plunging particle close to
the K... | [
{
"created": "Sat, 4 Jun 2011 00:21:23 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Oct 2011 16:30:29 GMT",
"version": "v2"
}
] | 2015-03-19 | [
[
"Zimmerman",
"Aaron",
""
],
[
"Chen",
"Yanbei",
""
]
] | We discuss a new ringdown frequency mode for vacuum perturbations of the Kerr black hole. We evolve initial data for the vacuum radial Teukolsky equation using a near horizon approximation, and find a frequency mode analogous to that found in a recent study of radiation generated by a plunging particle close to the Ker... |
2401.14452 | Tucker Manton | Tucker Manton and Stephon Alexander | The Kalb-Ramond field and Gravitational Parity Violation | 7 pages + refs, comments welcome | null | null | null | gr-qc astro-ph.CO hep-ph | http://creativecommons.org/licenses/by/4.0/ | Gravitational wave physics can probe theories that extend beyond General
Relativity. Motivated by recent attention on the Kalb-Ramond field as a dark
matter candidate, in this work, we study a parity violating dimension four
operator which couples the dual Riemann curvature to the 2-form field. After
mapping the equa... | [
{
"created": "Thu, 25 Jan 2024 19:00:00 GMT",
"version": "v1"
}
] | 2024-01-29 | [
[
"Manton",
"Tucker",
""
],
[
"Alexander",
"Stephon",
""
]
] | Gravitational wave physics can probe theories that extend beyond General Relativity. Motivated by recent attention on the Kalb-Ramond field as a dark matter candidate, in this work, we study a parity violating dimension four operator which couples the dual Riemann curvature to the 2-form field. After mapping the equati... |
1307.6198 | Alexander Thorne | Alex Thorne | Asymptotic Expansions and Bondi Positivity in Higher Dimensional
Relativity | MPhil Thesis | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The positivity of the Bondi mass has been proven in 4 dimensions, but in
higher dimensions the issue remains open. The formalism of the present paper
has been developed to investigate this and is well suited to the higher
dimensional case. At null infinity, we make asymptotic expansions of the metric
components in co... | [
{
"created": "Tue, 9 Jul 2013 22:28:19 GMT",
"version": "v1"
}
] | 2013-07-24 | [
[
"Thorne",
"Alex",
""
]
] | The positivity of the Bondi mass has been proven in 4 dimensions, but in higher dimensions the issue remains open. The formalism of the present paper has been developed to investigate this and is well suited to the higher dimensional case. At null infinity, we make asymptotic expansions of the metric components in conf... |
1702.03360 | Christine Gruber | Alessandro Bravetti, Christine Gruber, Cesar S. Lopez-Monsalvo,
Francisco Nettel | The zeroth law in quasi-homogeneous thermodynamics and black holes | 8 pages, 7 figures | Physics Letters B774 (2017) 417-424 | 10.1016/j.physletb.2017.09.089 | null | gr-qc cond-mat.stat-mech hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by black holes thermodynamics, we consider the zeroth law of
thermodynamics for systems whose entropy is a quasi-homogeneous function of the
extensive variables. We show that the generalized Gibbs-Duhem identity and the
Maxwell construction for phase coexistence based on the standard zeroth law are
incompat... | [
{
"created": "Sat, 11 Feb 2017 00:33:48 GMT",
"version": "v1"
},
{
"created": "Sat, 20 Jan 2018 15:47:29 GMT",
"version": "v2"
}
] | 2018-01-23 | [
[
"Bravetti",
"Alessandro",
""
],
[
"Gruber",
"Christine",
""
],
[
"Lopez-Monsalvo",
"Cesar S.",
""
],
[
"Nettel",
"Francisco",
""
]
] | Motivated by black holes thermodynamics, we consider the zeroth law of thermodynamics for systems whose entropy is a quasi-homogeneous function of the extensive variables. We show that the generalized Gibbs-Duhem identity and the Maxwell construction for phase coexistence based on the standard zeroth law are incompatib... |
gr-qc/0304074 | Martin Bojowald | Abhay Ashtekar, Martin Bojowald and Jerzy Lewandowski | Mathematical structure of loop quantum cosmology | 29 pages, v2: minor corrections, v3: remark added in appendix | Adv.Theor.Math.Phys.7:233-268,2003 | null | CGPG-03/4-4 | gr-qc hep-th math-ph math.MP | null | Applications of Riemannian quantum geometry to cosmology have had notable
successes. In particular, the fundamental discreteness underlying quantum
geometry has led to a natural resolution of the big bang singularity. However,
the precise mathematical structure underlying loop quantum cosmology and the
sense in which... | [
{
"created": "Mon, 21 Apr 2003 18:13:53 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Apr 2003 18:18:27 GMT",
"version": "v2"
},
{
"created": "Mon, 9 Jun 2003 17:25:56 GMT",
"version": "v3"
},
{
"created": "Wed, 24 Dec 2003 16:11:20 GMT",
"version": "v4"
}
] | 2011-05-05 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Bojowald",
"Martin",
""
],
[
"Lewandowski",
"Jerzy",
""
]
] | Applications of Riemannian quantum geometry to cosmology have had notable successes. In particular, the fundamental discreteness underlying quantum geometry has led to a natural resolution of the big bang singularity. However, the precise mathematical structure underlying loop quantum cosmology and the sense in which i... |
gr-qc/9909027 | Nobuyuki Sakai | Nobuyuki Sakai (YITP, Kyoto U.), Ken-ichi Nakao (Osaka City U.),
Tomohiro Harada (Kyoto U.) | Causal Structure of an Inflating Magnetic Monopole | 6 pages (text), revtex, 5 ps figures separate, to appear in Phys Rev
D, Fig 3 and discussions are modified | Phys.Rev. D61 (2000) 127302 | 10.1103/PhysRevD.61.127302 | YITP-99-52, KUNS-1597 | gr-qc astro-ph hep-ph | null | We clarify the causal structure of an inflating magnetic monopole. The
spacetime diagram shows explicitly that this model is free from ``graceful
exit'' problem, while the monopole itself undergoes ``eternal inflation''. We
also discuss general nature of inflationary spacetimes.
| [
{
"created": "Tue, 7 Sep 1999 18:19:28 GMT",
"version": "v1"
},
{
"created": "Sun, 6 Feb 2000 14:37:29 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Sakai",
"Nobuyuki",
"",
"YITP, Kyoto U."
],
[
"Nakao",
"Ken-ichi",
"",
"Osaka City U."
],
[
"Harada",
"Tomohiro",
"",
"Kyoto U."
]
] | We clarify the causal structure of an inflating magnetic monopole. The spacetime diagram shows explicitly that this model is free from ``graceful exit'' problem, while the monopole itself undergoes ``eternal inflation''. We also discuss general nature of inflationary spacetimes. |
2201.04691 | Christian Pfeifer | Christian Pfeifer | A quick guide to spacetime symmetry and symmetric solutions in
teleparallel gravity | Contribution to the proceedings of the X. Roberto A. Salmeron School
of Physics (EFRAS), November 2021, Brasilia. The talk is available online at:
https://youtu.be/3ks5_YvEG5I | e-Boletim da Fisica, Vol. 10 No. 2 (2021): X Escola de F\'isica
Roberto A. Salmeron (EFRAS) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The notion of spacetime symmetry is essential to describe gravitating
physical systems like planets, stars, black holes, or the universe as a whole,
since they possess, at least to good approximation, spherical, axial, or
spatially homogeneous and isotropic symmetry, respectively. This article gives
a quick overview ... | [
{
"created": "Wed, 12 Jan 2022 20:41:46 GMT",
"version": "v1"
}
] | 2022-12-01 | [
[
"Pfeifer",
"Christian",
""
]
] | The notion of spacetime symmetry is essential to describe gravitating physical systems like planets, stars, black holes, or the universe as a whole, since they possess, at least to good approximation, spherical, axial, or spatially homogeneous and isotropic symmetry, respectively. This article gives a quick overview ov... |
1101.2868 | Burkhard Kleihaus | Burkhard Kleihaus, Jutta Kunz, and Eugen Radu | Rotating Black Holes in Dilatonic Einstein-Gauss-Bonnet Theory | 5 pages, 4 figures | Phys.Rev.Lett.106:151104,2011 | 10.1103/PhysRevLett.106.151104 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct generalizations of the Kerr black holes by including higher
curvature corrections in the form of the Gauss-Bonnet density coupled to the
dilaton. We show that the domain of existence of these
Einstein-Gauss-Bonnet-dilaton (EBGd) black holes is bounded by the Kerr black
holes, the critical EGBd black hole... | [
{
"created": "Fri, 14 Jan 2011 17:38:50 GMT",
"version": "v1"
}
] | 2011-04-20 | [
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Radu",
"Eugen",
""
]
] | We construct generalizations of the Kerr black holes by including higher curvature corrections in the form of the Gauss-Bonnet density coupled to the dilaton. We show that the domain of existence of these Einstein-Gauss-Bonnet-dilaton (EBGd) black holes is bounded by the Kerr black holes, the critical EGBd black holes,... |
2003.10633 | Fabio Chibana | Takeshi Chiba, Fabio Chibana and Masahide Yamaguchi | Disformal invariance of cosmological observables | 29 pages, 1 figure. v3: updated subsection 4.3 and fixed minor typos | null | 10.1088/1475-7516/2020/06/003 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the frame dependence/independence of cosmological observables under
disformal transformations, extending the previous results regarding conformal
transformations, and provide the correspondence between Jordan-frame and
Einstein-frame variables. We consider quantities such as the gravitational
constant in the... | [
{
"created": "Tue, 24 Mar 2020 03:06:33 GMT",
"version": "v1"
},
{
"created": "Mon, 4 May 2020 23:19:58 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Jun 2020 01:14:06 GMT",
"version": "v3"
}
] | 2020-06-17 | [
[
"Chiba",
"Takeshi",
""
],
[
"Chibana",
"Fabio",
""
],
[
"Yamaguchi",
"Masahide",
""
]
] | We study the frame dependence/independence of cosmological observables under disformal transformations, extending the previous results regarding conformal transformations, and provide the correspondence between Jordan-frame and Einstein-frame variables. We consider quantities such as the gravitational constant in the N... |
2201.09879 | Ali \"Ovg\"un Dr. | Wajiha Javed, Iqra Hussain and Ali \"Ovg\"un | Weak deflection angle of Kazakov-Solodukhin black hole in plasma medium
using Gauss-Bonnet theorem and its greybody bonding | 16 pages. Accepted for publication in The European Physical Journal
Plus | Eur. Phys. J. Plus (2022) 137:148 | 10.1140/epjp/s13360-022-02374-7 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we study light rays in a Kazakov-Solodukhin black hole. To
this end, we use the optical geometry of the Kazakov-Solodukhin black hole
within the Gauss-bonnet theorem. We first show the effect of the deformation
parameter $a$ on the Gaussian optical curvature, and then we use the modern
method populariz... | [
{
"created": "Fri, 21 Jan 2022 20:16:19 GMT",
"version": "v1"
}
] | 2022-01-26 | [
[
"Javed",
"Wajiha",
""
],
[
"Hussain",
"Iqra",
""
],
[
"Övgün",
"Ali",
""
]
] | In this paper, we study light rays in a Kazakov-Solodukhin black hole. To this end, we use the optical geometry of the Kazakov-Solodukhin black hole within the Gauss-bonnet theorem. We first show the effect of the deformation parameter $a$ on the Gaussian optical curvature, and then we use the modern method popularized... |
1504.02506 | Barun Majumder | Barun Majumder, Kent Yagi and Nicolas Yunes | Improved Universality in the Neutron Star Three-Hair Relations | 11 pages, 10 figures, submitted to Phys. Rev. D | PHYS REV D 92, 024020 (2015) | 10.1103/PhysRevD.92.024020 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | No-hair like relations between the multipole moments of the exterior
gravitational field of neutron stars have recently been found to be
approximately independent of the star's internal structure. This approximate,
equation-of-state universality arises after one adimensionalizes the multipole
moments appropriately, w... | [
{
"created": "Thu, 9 Apr 2015 21:47:57 GMT",
"version": "v1"
}
] | 2015-08-06 | [
[
"Majumder",
"Barun",
""
],
[
"Yagi",
"Kent",
""
],
[
"Yunes",
"Nicolas",
""
]
] | No-hair like relations between the multipole moments of the exterior gravitational field of neutron stars have recently been found to be approximately independent of the star's internal structure. This approximate, equation-of-state universality arises after one adimensionalizes the multipole moments appropriately, whi... |
1801.09920 | Alexander Zakharov | Alexander F. Zakharov | The black hole at the Galactic Center: observations and models | 16 pages, presented as a talk at the Third International Conference
on Particle Physics and Astrophysics (ICPPA-2017), accepted for publication
in the International Journal of Modern Physics D, minor typos were corrected | null | 10.1142/S0218271818410092 | null | gr-qc astro-ph.CO astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the most interesting astronomical objects is the Galactic Center. We
concentrate our discussion on a theoretical analysis of observational data of
bright stars in the IR-band obtained with large telescopes. We also discuss the
importance of VLBI observations of bright structures which could characterize
the sh... | [
{
"created": "Tue, 30 Jan 2018 10:10:01 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Feb 2018 15:07:49 GMT",
"version": "v2"
}
] | 2018-02-13 | [
[
"Zakharov",
"Alexander F.",
""
]
] | One of the most interesting astronomical objects is the Galactic Center. We concentrate our discussion on a theoretical analysis of observational data of bright stars in the IR-band obtained with large telescopes. We also discuss the importance of VLBI observations of bright structures which could characterize the shad... |
1811.05779 | Chikun Ding | Chikun Ding and Anzhong Wang | Thermodynamical study on universal horizons in higher $D$-dimensional
spacetime and aether waves | 26 pages, no figure. In this version, 5 pages added, accepted by Phys
Rev D. arXiv admin note: substantial text overlap with arXiv:1608.00290 | Phys. Rev. D 99, 124011 (2019) | 10.1103/PhysRevD.99.124011 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate thermodynamic behaviors of the $D$-dimensional gravity coupled
to a dynamical unit timelike vector, the aether, present two kinds of exact
charged solutions and study the linearized wave spectrum of this theory. There
is an universal horizon behind the Killing horizon in these aether black holes.
It is... | [
{
"created": "Tue, 13 Nov 2018 02:25:25 GMT",
"version": "v1"
},
{
"created": "Sun, 26 May 2019 03:17:37 GMT",
"version": "v2"
}
] | 2019-06-19 | [
[
"Ding",
"Chikun",
""
],
[
"Wang",
"Anzhong",
""
]
] | We investigate thermodynamic behaviors of the $D$-dimensional gravity coupled to a dynamical unit timelike vector, the aether, present two kinds of exact charged solutions and study the linearized wave spectrum of this theory. There is an universal horizon behind the Killing horizon in these aether black holes. It is i... |
1306.4516 | Behrouz Mirza | Mohammad Bagher Jahani Poshteh, Behrouz Mirza, Zeinab Sherkatghanad | Phase transition, critical behavior, and critical exponents of
Myers-Perry black holes | 8 pages, 11 figures, typos fixed, references added | Phys. Rev. D 88, 024005 (2013) | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The critical behavior of Myers-Perry black holes with equal angular momenta
in even dimensions are studied. We include the corrections beyond the
semiclassical approximation on Hawking temperature in the grand canonical
ensemble. Having done so, we find that the critical behavior and critical
exponents of Myers-Perry... | [
{
"created": "Wed, 19 Jun 2013 12:34:33 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jul 2013 08:05:07 GMT",
"version": "v2"
}
] | 2013-07-10 | [
[
"Poshteh",
"Mohammad Bagher Jahani",
""
],
[
"Mirza",
"Behrouz",
""
],
[
"Sherkatghanad",
"Zeinab",
""
]
] | The critical behavior of Myers-Perry black holes with equal angular momenta in even dimensions are studied. We include the corrections beyond the semiclassical approximation on Hawking temperature in the grand canonical ensemble. Having done so, we find that the critical behavior and critical exponents of Myers-Perry b... |
2209.03055 | Mahnaz Asghari | Mahnaz Asghari and Ahmad Sheykhi | On observational signatures of multi-fractional theory | 9 pages, 6 figures | Physics of the Dark Universe (2023) 42:101323 | 10.1016/j.dark.2023.101323 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by-nc-nd/4.0/ | We study the multi-fractional theory with $q$-derivatives, where the
multi-fractional measure is considered to be in the time direction. The
evolution of power spectra and also the expansion history of the universe are
investigated in the $q$-derivatives theory. According to the matter power
spectra diagrams, the str... | [
{
"created": "Wed, 7 Sep 2022 10:39:18 GMT",
"version": "v1"
},
{
"created": "Sun, 10 Sep 2023 09:35:50 GMT",
"version": "v2"
}
] | 2023-09-12 | [
[
"Asghari",
"Mahnaz",
""
],
[
"Sheykhi",
"Ahmad",
""
]
] | We study the multi-fractional theory with $q$-derivatives, where the multi-fractional measure is considered to be in the time direction. The evolution of power spectra and also the expansion history of the universe are investigated in the $q$-derivatives theory. According to the matter power spectra diagrams, the struc... |
1404.7825 | Ahmed Farag Ali | Adel Awad, Ahmed Farag Ali | Minimal Length, Friedmann Equations and Maximum Density | 15 pages, 1 figure, minor revisions, To appear in JHEP | JHEP 1406 (2014) 093 | 10.1007/JHEP06(2014)093 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspired by Jacobson's thermodynamic approach[gr-qc/9504004], Cai et al
[hep-th/0501055,hep-th/0609128] have shown the emergence of Friedmann equations
from the first law of thermodynamics. We extend Akbar--Cai derivation
[hep-th/0609128] of Friedmann equations to accommodate a general entropy-area
law. Studying the ... | [
{
"created": "Wed, 30 Apr 2014 18:27:15 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Jun 2014 22:08:46 GMT",
"version": "v2"
}
] | 2014-06-19 | [
[
"Awad",
"Adel",
""
],
[
"Ali",
"Ahmed Farag",
""
]
] | Inspired by Jacobson's thermodynamic approach[gr-qc/9504004], Cai et al [hep-th/0501055,hep-th/0609128] have shown the emergence of Friedmann equations from the first law of thermodynamics. We extend Akbar--Cai derivation [hep-th/0609128] of Friedmann equations to accommodate a general entropy-area law. Studying the re... |
1102.2030 | Mandar Patil | Mandar Patil, Pankaj S. Joshi and Daniele Malafarina | Naked Singularities as Particle Accelerators II | 13 pages, 5 figures, Accepted for publication in Phys. Rev. D,
Reference and Acknowledgments added | Phys.Rev.D83:064007,2011 | 10.1103/PhysRevD.83.064007 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize here our earlier results on particle acceleration by naked
singularities. We showed recently[1] that the naked singularities that form due
to gravitational collapse of massive stars provide a suitable environment where
particles could get accelerated and collide at arbitrarily high center of mass
energi... | [
{
"created": "Thu, 10 Feb 2011 03:46:55 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Feb 2011 14:35:46 GMT",
"version": "v2"
}
] | 2011-03-22 | [
[
"Patil",
"Mandar",
""
],
[
"Joshi",
"Pankaj S.",
""
],
[
"Malafarina",
"Daniele",
""
]
] | We generalize here our earlier results on particle acceleration by naked singularities. We showed recently[1] that the naked singularities that form due to gravitational collapse of massive stars provide a suitable environment where particles could get accelerated and collide at arbitrarily high center of mass energies... |
0902.3489 | Sergei Kopeikin | Sergei Kopeikin (University of Missouri-Columbia, USA) | Millimeter Laser Ranging to the Moon: a comprehensive theoretical model
for advanced data analysis | 8 pages; a talk given at the 16th International Workshop on Laser
Ranging (Poznan Poland, October 12-17, 2008) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lunar Laser Ranging (LLR) measurements are crucial for advanced exploration
of the evolutionary history of the lunar orbit, the laws of fundamental
gravitational physics, selenophysics and geophysics as well as for future human
missions to the Moon. Current LLR technique measures distance to the Moon with
a precision... | [
{
"created": "Fri, 20 Feb 2009 00:31:24 GMT",
"version": "v1"
}
] | 2009-02-23 | [
[
"Kopeikin",
"Sergei",
"",
"University of Missouri-Columbia, USA"
]
] | Lunar Laser Ranging (LLR) measurements are crucial for advanced exploration of the evolutionary history of the lunar orbit, the laws of fundamental gravitational physics, selenophysics and geophysics as well as for future human missions to the Moon. Current LLR technique measures distance to the Moon with a precision a... |
0907.0434 | Nakia Carlevaro | Nakia Carlevaro, Giovanni Montani | The Jeans Instability in Presence of Viscous Effects | 13 pages, 2 figures | Int.J.Mod.Phys.D18:1257-1272,2009 | 10.1142/S0218271809015060 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An analysis of the gravitational instability in presence of dissipative
effects is addressed. In particular, the standard Jeans Mechanism and the
generalization in treating the Universe expansion are both analyzed when bulk
viscosity affects the first-order Newtonian dynamics. As results, the
perturbation evolution i... | [
{
"created": "Thu, 2 Jul 2009 16:37:53 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Jul 2009 10:48:48 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Carlevaro",
"Nakia",
""
],
[
"Montani",
"Giovanni",
""
]
] | An analysis of the gravitational instability in presence of dissipative effects is addressed. In particular, the standard Jeans Mechanism and the generalization in treating the Universe expansion are both analyzed when bulk viscosity affects the first-order Newtonian dynamics. As results, the perturbation evolution is ... |
2110.11344 | Carlos Sab\'in | Adri\'an Terrones and Carlos Sab\'in | Quantum Simulation of Black Holes in a dc-SQUID Array | 19 pages, 13 figures. v2: 21 pages, published version | Universe 7, 499 (2021) | 10.3390/universe7120499 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose quantum simulations of 1+1D radial sections of different black
hole spacetimes (Schwarzschild, Reissner-Nordstr\o{}m, Kerr and Kerr-Newman),
by means of a dc-SQUID array embedded on an open transmission line. This is
achieved by reproducing the effective speed of light in the 1+1D sections of
the spacetime... | [
{
"created": "Wed, 20 Oct 2021 15:48:03 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Dec 2021 16:53:37 GMT",
"version": "v2"
}
] | 2021-12-17 | [
[
"Terrones",
"Adrián",
""
],
[
"Sabín",
"Carlos",
""
]
] | We propose quantum simulations of 1+1D radial sections of different black hole spacetimes (Schwarzschild, Reissner-Nordstr\o{}m, Kerr and Kerr-Newman), by means of a dc-SQUID array embedded on an open transmission line. This is achieved by reproducing the effective speed of light in the 1+1D sections of the spacetime w... |
1403.0480 | Norbert Straumann | Norbert Straumann | Geometry of the Hopf Bundle and spin-weighted Harmonics | 7 pages | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate that it is conceptually and computationally favorable to
regard spin-weighted spherical harmonics as vector valued functions on the
total space $SO(3)$ of the Hopf bundle, satisfying a covariance condition with
respect to the gauge group $U(1)$ of this bundle. A key role is played by the
invariant conn... | [
{
"created": "Mon, 3 Mar 2014 16:27:21 GMT",
"version": "v1"
}
] | 2014-03-04 | [
[
"Straumann",
"Norbert",
""
]
] | We demonstrate that it is conceptually and computationally favorable to regard spin-weighted spherical harmonics as vector valued functions on the total space $SO(3)$ of the Hopf bundle, satisfying a covariance condition with respect to the gauge group $U(1)$ of this bundle. A key role is played by the invariant connec... |
1401.4870 | Vladim\'ir Balek | Vladim\'ir Balek | From 'nothing' to inflation and back again | 8 pages, presented at the conference Relativity and Gravitation, 100
years after Einstein in Prague (Prague 2012) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A procedure for solving Wheeler-DeWitt equation in Euclidean region,
following step by step the construction of tunneling wave function in
nonrelativistic quantum mechanics by Banks, Bender and Wu, is proposed.
Solutions for a universe satisfying no-boundary condition and a universe
created from 'nothing' are compare... | [
{
"created": "Mon, 20 Jan 2014 11:52:39 GMT",
"version": "v1"
}
] | 2014-01-21 | [
[
"Balek",
"Vladimír",
""
]
] | A procedure for solving Wheeler-DeWitt equation in Euclidean region, following step by step the construction of tunneling wave function in nonrelativistic quantum mechanics by Banks, Bender and Wu, is proposed. Solutions for a universe satisfying no-boundary condition and a universe created from 'nothing' are compared ... |
1909.10332 | Oleksandr Sobol Dr. | E.V. Gorbar, A.I. Momot, O.O. Sobol, S.I. Vilchinskii | Kinetic approach to the Schwinger effect during inflation | 17 pages, 4 figures | Phys. Rev. D 100, 123502 (2019) | 10.1103/PhysRevD.100.123502 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the kinetic approach, we study the impact of the charged particles
dynamics due to the Schwinger effect on the electric field evolution during
inflation. As a simple model of the electric field generation, we consider the
kinetic coupling of the electromagnetic field to the inflaton via the term
$f^{2}(\phi)F_{... | [
{
"created": "Thu, 19 Sep 2019 23:21:18 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Oct 2019 22:18:40 GMT",
"version": "v2"
},
{
"created": "Tue, 3 Dec 2019 09:08:39 GMT",
"version": "v3"
}
] | 2019-12-11 | [
[
"Gorbar",
"E. V.",
""
],
[
"Momot",
"A. I.",
""
],
[
"Sobol",
"O. O.",
""
],
[
"Vilchinskii",
"S. I.",
""
]
] | Using the kinetic approach, we study the impact of the charged particles dynamics due to the Schwinger effect on the electric field evolution during inflation. As a simple model of the electric field generation, we consider the kinetic coupling of the electromagnetic field to the inflaton via the term $f^{2}(\phi)F_{\m... |
2310.14311 | Lorenzo Iorio | Lorenzo Iorio | When the anomalistic, draconitic and sidereal orbital periods do not
coincide: the impact of post-Keplerian perturbing accelerations | LaTex2e, 29 pages, 17 figures, no tables. Accepted for publication in
Time and Space | Time Space 2024, 1(1), 3-34 | 10.3390/timespace1010002 | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a purely Keplerian picture, the anomalistic, draconitic and sidereal
orbital periods of a test particle orbiting a massive body coincide with each
other. Such a degeneracy is removed when a post-Keplerian perturbing
acceleration enters the equations of motion yielding generally different
corrections to the Kepleri... | [
{
"created": "Sun, 22 Oct 2023 14:15:20 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Jul 2024 14:31:09 GMT",
"version": "v2"
}
] | 2024-07-08 | [
[
"Iorio",
"Lorenzo",
""
]
] | In a purely Keplerian picture, the anomalistic, draconitic and sidereal orbital periods of a test particle orbiting a massive body coincide with each other. Such a degeneracy is removed when a post-Keplerian perturbing acceleration enters the equations of motion yielding generally different corrections to the Keplerian... |
gr-qc/9808074 | Jelle Boersma | Jelle Boersma (University of Cape Town) | On the large-scale structure of the inflationary universe | 17 pages, Latex | null | null | null | gr-qc | null | We study the evolution of quantum fluctuations of a scalar field which is
coupled to the geometry, in an exponentially expanding universe.
We derive an expression for the spectrum of intrinsic perturbations, and it
is shown that the intrinsic degrees of freedom are well behaved in the
infra-red part of the spectrum... | [
{
"created": "Thu, 27 Aug 1998 10:44:32 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Boersma",
"Jelle",
"",
"University of Cape Town"
]
] | We study the evolution of quantum fluctuations of a scalar field which is coupled to the geometry, in an exponentially expanding universe. We derive an expression for the spectrum of intrinsic perturbations, and it is shown that the intrinsic degrees of freedom are well behaved in the infra-red part of the spectrum. We... |
1009.3402 | Simone Speziale | Eugenio Bianchi, Pietro Dona' and Simone Speziale | Polyhedra in loop quantum gravity | 32 pages, many figures. v2 minor corrections | Phys.Rev.D83:044035,2011 | 10.1103/PhysRevD.83.044035 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Interwiners are the building blocks of spin-network states. The space of
intertwiners is the quantization of a classical symplectic manifold introduced
by Kapovich and Millson. Here we show that a theorem by Minkowski allows us to
interpret generic configurations in this space as bounded convex polyhedra in
Euclidean... | [
{
"created": "Fri, 17 Sep 2010 11:46:21 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Jan 2011 14:31:01 GMT",
"version": "v2"
}
] | 2011-03-23 | [
[
"Bianchi",
"Eugenio",
""
],
[
"Dona'",
"Pietro",
""
],
[
"Speziale",
"Simone",
""
]
] | Interwiners are the building blocks of spin-network states. The space of intertwiners is the quantization of a classical symplectic manifold introduced by Kapovich and Millson. Here we show that a theorem by Minkowski allows us to interpret generic configurations in this space as bounded convex polyhedra in Euclidean s... |
0705.2380 | Aseem Paranjape | Aseem Paranjape | A Covariant Road to Spatial Averaging in Cosmology : Scalar Corrections
to the Cosmological Equations | 8 pages; This essay received an Honourable Mention in the Gravity
Research Foundation's Essay Competition, 2007 | Int.J.Mod.Phys.D17:597-601,2008 | 10.1142/S0218271808012322 | null | gr-qc astro-ph | null | A consistent approach to Cosmology requires an explicit averaging of the
Einstein equations, to describe a homogeneous and isotropic geometry. Such an
averaging will in general modify the Einstein equations. The averaging
procedure due to Buchert has attracted considerable attention recently since it
offers the tanta... | [
{
"created": "Wed, 16 May 2007 15:33:17 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Paranjape",
"Aseem",
""
]
] | A consistent approach to Cosmology requires an explicit averaging of the Einstein equations, to describe a homogeneous and isotropic geometry. Such an averaging will in general modify the Einstein equations. The averaging procedure due to Buchert has attracted considerable attention recently since it offers the tantali... |
0906.1351 | Christian Boehmer | Christian G. Boehmer, James Burnett | Dark energy with dark spinors | 12 pages, 7 figures | Mod.Phys.Lett.A25:101-110,2010 | 10.1142/S0217732310032275 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Ever since the first observations that we are living in an accelerating
universe, it has been asked what dark energy is. There are various explanations
all of which with have various draw backs or inconsistencies. Here we show that
using a dark spinor field it is possible to have an equation of state that
crosses the... | [
{
"created": "Mon, 8 Jun 2009 13:26:33 GMT",
"version": "v1"
}
] | 2010-02-02 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Burnett",
"James",
""
]
] | Ever since the first observations that we are living in an accelerating universe, it has been asked what dark energy is. There are various explanations all of which with have various draw backs or inconsistencies. Here we show that using a dark spinor field it is possible to have an equation of state that crosses the p... |
gr-qc/0006004 | Jonathan R. Ellis | John Ellis (CERN), N.E. Mavromatos (Kings College London) and D.V.
Nanopoulos (TAMU, HARC, Academy of Athens) | Dynamical Formation of Horizons in Recoiling D Branes | 25 pages LaTeX, 4 eps figures included | Phys.Rev.D62:084019,2000 | 10.1103/PhysRevD.62.084019 | ACT-07/00,CERN--TH/2000--155,CTP-TAMU-17/00 | gr-qc hep-ph hep-th | null | A toy calculation of string/D-particle interactions within a world-sheet
approach indicates that quantum recoil effects - reflecting the gravitational
back-reaction on space-time foam due to the propagation of energetic particles
- induces the appearance of a microscopic event horizon, or `bubble', inside
which stabl... | [
{
"created": "Fri, 2 Jun 2000 16:49:22 GMT",
"version": "v1"
}
] | 2009-09-11 | [
[
"Ellis",
"John",
"",
"CERN"
],
[
"Mavromatos",
"N. E.",
"",
"Kings College London"
],
[
"Nanopoulos",
"D. V.",
"",
"TAMU, HARC, Academy of Athens"
]
] | A toy calculation of string/D-particle interactions within a world-sheet approach indicates that quantum recoil effects - reflecting the gravitational back-reaction on space-time foam due to the propagation of energetic particles - induces the appearance of a microscopic event horizon, or `bubble', inside which stable ... |
gr-qc/0002070 | Vahid Rezania | Vahid Rezania | Normal modes of relativistic systems in post-Newtonian approximation and
the stability curve of r-modes | Ph. D. Thesis, 131 pages | null | null | 18/2/2000 | gr-qc | null | In part I, we use the post-Newtonian (pn) order of Liouville's equation to
study the normal modes of oscillation of a spherically symmetric relativistic
system. Perturbations that are neutral in Newtonian approximation develop into
a new sequence of normal modes.
In part II, stability curve of r-modes of neutron st... | [
{
"created": "Sat, 19 Feb 2000 07:51:14 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rezania",
"Vahid",
""
]
] | In part I, we use the post-Newtonian (pn) order of Liouville's equation to study the normal modes of oscillation of a spherically symmetric relativistic system. Perturbations that are neutral in Newtonian approximation develop into a new sequence of normal modes. In part II, stability curve of r-modes of neutron stars ... |
1409.5988 | Kai Lin | Jin Li, Kai Lin and Nan Yang | Nonlinear Electromagnetic Quasinormal Modes and Hawking Radiation of A
Regular Black Hole with Magnetic Charge | null | The European Physical Journal C, March 2015, 75:131 | 10.1140/epjc/s10052-015-3347-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on a regular exact black hole (BH) from nonlinear electrodynamics (NED)
coupled to General Relativity, we investigate its stability of such BH through
the Quasinormal Modes (QNMs) of electromagnetic (EM) field perturbation and its
thermodynamics through Hawking radiation. In perturbation theory, we can deduce
t... | [
{
"created": "Sun, 21 Sep 2014 14:31:45 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Mar 2015 15:38:57 GMT",
"version": "v2"
}
] | 2015-03-25 | [
[
"Li",
"Jin",
""
],
[
"Lin",
"Kai",
""
],
[
"Yang",
"Nan",
""
]
] | Based on a regular exact black hole (BH) from nonlinear electrodynamics (NED) coupled to General Relativity, we investigate its stability of such BH through the Quasinormal Modes (QNMs) of electromagnetic (EM) field perturbation and its thermodynamics through Hawking radiation. In perturbation theory, we can deduce the... |
1810.02291 | Hui-Ling Li | Hui-Ling Li, Wei Li and Yi-Wen Han | Remark on Remnant and Residue Entropy with GUP | 18 pages, 5 figures, 2 tables | Advances in High Energy Physics, Volume 2018, Article ID 9247085,
2018 | 10.1155/2018/9247085 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this article, close to the Planck scale, we discuss on the remnant and
residue entropy from a Rutz-Schwarzschild black hole in the frame of Finsler
geometry. Employing the corrected Hamilton-Jacobi equation, the tunneling
radiation of a scalar particle is presented, and the revised tunneling
temperature and revise... | [
{
"created": "Thu, 4 Oct 2018 16:15:37 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Nov 2018 20:20:01 GMT",
"version": "v2"
}
] | 2018-12-10 | [
[
"Li",
"Hui-Ling",
""
],
[
"Li",
"Wei",
""
],
[
"Han",
"Yi-Wen",
""
]
] | In this article, close to the Planck scale, we discuss on the remnant and residue entropy from a Rutz-Schwarzschild black hole in the frame of Finsler geometry. Employing the corrected Hamilton-Jacobi equation, the tunneling radiation of a scalar particle is presented, and the revised tunneling temperature and revised ... |
2202.13467 | Erhard Scholz | Erhard Scholz | A Weyl geometric scalar field approach to the dark sector | 47 pages, figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper explores the dark sector (dark matter and dark energy) from the
perspective of Weyl geometric scalar tensor theory (integrable Weyl geometry).
In order to account for the galactic dynamics successfully modelled by MOND
("modified Newtonian dynamics"), the non-minimally coupled scalar field
considered here ... | [
{
"created": "Sun, 27 Feb 2022 22:30:08 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Jun 2022 11:14:56 GMT",
"version": "v2"
}
] | 2022-06-14 | [
[
"Scholz",
"Erhard",
""
]
] | This paper explores the dark sector (dark matter and dark energy) from the perspective of Weyl geometric scalar tensor theory (integrable Weyl geometry). In order to account for the galactic dynamics successfully modelled by MOND ("modified Newtonian dynamics"), the non-minimally coupled scalar field considered here ha... |
0803.0281 | Frans Klinkhamer | F.R. Klinkhamer | Equilibrium boundary conditions, dynamic vacuum energy, and the Big Bang | 20 pages with revtex4; v7: published version in preprint style | Phys.Rev.D78:083533,2008 | 10.1103/PhysRevD.78.083533 | KA-TP-06-2008 | gr-qc astro-ph hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The near-zero value of the cosmological constant \Lambda in an equilibrium
context may be due to the existence of a self-tuning relativistic vacuum
variable q. Here, a cosmological nonequilibrium context is considered with a
corresponding time-dependent cosmological parameter \Lambda(t) or vacuum energy
density \rho_... | [
{
"created": "Mon, 3 Mar 2008 18:35:30 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Mar 2008 13:30:37 GMT",
"version": "v2"
},
{
"created": "Mon, 17 Mar 2008 15:10:57 GMT",
"version": "v3"
},
{
"created": "Mon, 24 Mar 2008 16:01:18 GMT",
"version": "v4"
},
{
"cr... | 2008-11-26 | [
[
"Klinkhamer",
"F. R.",
""
]
] | The near-zero value of the cosmological constant \Lambda in an equilibrium context may be due to the existence of a self-tuning relativistic vacuum variable q. Here, a cosmological nonequilibrium context is considered with a corresponding time-dependent cosmological parameter \Lambda(t) or vacuum energy density \rho_V(... |
2011.07055 | Alexander Vikman | Pavel Jirou\v{s}ek, Keigo Shimada, Alexander Vikman, Masahide
Yamaguchi | Losing the trace to find dynamical Newton or Planck constants | 13 pages+refs, no figures, updated refs, corrected typos, extended
discussion | JCAP 04 (2021) 028 | 10.1088/1475-7516/2021/04/028 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We show that promoting the trace part of the Einstein equations to a trivial
identity results in the Newton constant being an integration constant. Thus, in
this formulation the Newton constant is a global dynamical degree of freedom
which is also a subject to quantization and quantum fluctuations. This is
similar to... | [
{
"created": "Fri, 13 Nov 2020 18:49:37 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Apr 2021 17:49:42 GMT",
"version": "v2"
}
] | 2021-04-16 | [
[
"Jiroušek",
"Pavel",
""
],
[
"Shimada",
"Keigo",
""
],
[
"Vikman",
"Alexander",
""
],
[
"Yamaguchi",
"Masahide",
""
]
] | We show that promoting the trace part of the Einstein equations to a trivial identity results in the Newton constant being an integration constant. Thus, in this formulation the Newton constant is a global dynamical degree of freedom which is also a subject to quantization and quantum fluctuations. This is similar to w... |
gr-qc/0002067 | Jonathan Thornburg | Sascha Husa, Christiane Lechner, Michael P\"urrer, Jonathan Thornburg,
and Peter C. Aichelburg | Type II Critical Collapse of a Self-Gravitating Nonlinear $\sigma$-Model | 23 pages, includes 10 postscript figure files, uses REVTeX, epsf,
psfrag, and AMS math fonts (amstex + amssymb); to appear in PRD15. Summary of
revisions from v2: fix wrong formula in figure 6 caption and y-axis label,
also minor wording changes and update publication status of refs 5-7 | Phys.Rev.D62:104007,2000 | 10.1103/PhysRevD.62.104007 | UWThPh-2000-12 | gr-qc | null | We report on the existence and phenomenology of type II critical collapse
within the one-parameter family of SU(2) $\sigma$-models coupled to gravity.
Numerical investigations in spherical symmetry show discretely self-similar
(DSS) behavior at the threshold of black hole formation for values of the
dimensionless cou... | [
{
"created": "Fri, 18 Feb 2000 22:34:33 GMT",
"version": "v1"
},
{
"created": "Sat, 1 Jul 2000 17:46:57 GMT",
"version": "v2"
},
{
"created": "Thu, 14 Sep 2000 14:59:57 GMT",
"version": "v3"
}
] | 2016-08-15 | [
[
"Husa",
"Sascha",
""
],
[
"Lechner",
"Christiane",
""
],
[
"Pürrer",
"Michael",
""
],
[
"Thornburg",
"Jonathan",
""
],
[
"Aichelburg",
"Peter C.",
""
]
] | We report on the existence and phenomenology of type II critical collapse within the one-parameter family of SU(2) $\sigma$-models coupled to gravity. Numerical investigations in spherical symmetry show discretely self-similar (DSS) behavior at the threshold of black hole formation for values of the dimensionless coupl... |
1304.2769 | Friedrich W. Hehl | Friedrich W. Hehl (Cologne, Germany and Columbia, Missouri), Yuri N.
Obukhov (Moscow, Russia), Dirk Puetzfeld (Bremen, Germany) | On Poincar\'e gauge theory of gravity, its equations of motion, and
Gravity Probe B | 7 pages of latex with 2 figures, title changed, minor corrections
inserted, some references added | Physics Letters A 377 (2013) 1775-1781 | 10.1016/j.physleta.2013.04.055 | null | gr-qc astro-ph.EP hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Ever since E.Cartan in the 1920s enriched the geometric framework of general
relativity (GR) by introducing a {\it torsion} of spacetime, the question arose
whether one could find a measurement technique for detecting the presence of a
torsion field. Mao et al.(2007) claimed that the rotating quartz balls in the
gyro... | [
{
"created": "Tue, 9 Apr 2013 20:00:02 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Jun 2013 18:44:10 GMT",
"version": "v2"
}
] | 2015-06-15 | [
[
"Hehl",
"Friedrich W.",
"",
"Cologne, Germany and Columbia, Missouri"
],
[
"Obukhov",
"Yuri N.",
"",
"Moscow, Russia"
],
[
"Puetzfeld",
"Dirk",
"",
"Bremen, Germany"
]
] | Ever since E.Cartan in the 1920s enriched the geometric framework of general relativity (GR) by introducing a {\it torsion} of spacetime, the question arose whether one could find a measurement technique for detecting the presence of a torsion field. Mao et al.(2007) claimed that the rotating quartz balls in the gyrosc... |
gr-qc/0411120 | Vanessa Andrade | V.C. Andrade, A.L. Naves de Oliveira and M.E.X. Guimar\~aes | Dilatonic, Chiral Cosmic Strings | 9 pages, 2 figures, to appear in Journal of High Energy Physics
(Proceedings Section) | PoS WC2004 (2004) 034 | null | null | gr-qc | null | In this work, we deal with the chiral string model for which the world-sheet
current is null in the framework of a scalar-tensor gravity. Our main goal is
to analyse the impact of such a current on the gravitational macroscopic
effects. For the purpose of this analysis, we first study the gravitational
properties of ... | [
{
"created": "Thu, 25 Nov 2004 12:15:39 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Dec 2004 12:07:02 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Andrade",
"V. C.",
""
],
[
"de Oliveira",
"A. L. Naves",
""
],
[
"Guimarães",
"M. E. X.",
""
]
] | In this work, we deal with the chiral string model for which the world-sheet current is null in the framework of a scalar-tensor gravity. Our main goal is to analyse the impact of such a current on the gravitational macroscopic effects. For the purpose of this analysis, we first study the gravitational properties of th... |
1704.02037 | Dongfeng Gao | Dongfeng Gao, Jin Wang, and Mingsheng Zhan | Constraining the generalized uncertainty principle with the atomic
weak-equivalence-principle test | 7 pages, 1 figure | Phys. Rev. A 95, 042106 (2017) | 10.1103/PhysRevA.95.042106 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Various models of quantum gravity imply the Planck-scale modifications of
Heisenberg's uncertainty principle into a so-called generalized uncertainty
principle (GUP). The GUP effects on high-energy physics, cosmology, and
astrophysics have been extensively studied. Here, we focus on the
weak-equivalence-principle (WE... | [
{
"created": "Thu, 6 Apr 2017 22:26:35 GMT",
"version": "v1"
}
] | 2017-04-18 | [
[
"Gao",
"Dongfeng",
""
],
[
"Wang",
"Jin",
""
],
[
"Zhan",
"Mingsheng",
""
]
] | Various models of quantum gravity imply the Planck-scale modifications of Heisenberg's uncertainty principle into a so-called generalized uncertainty principle (GUP). The GUP effects on high-energy physics, cosmology, and astrophysics have been extensively studied. Here, we focus on the weak-equivalence-principle (WEP)... |
2401.17107 | Zonghai Li | Zonghai Li | A Novel Method for Calculating Deflection Angle with Finite-Distance
Correction | 5 pages. Corrected some symbol errors | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In recent study in Ref.[7] (arXiv: 2401.12525), we have introduced a method
aimed at calculating the weak-field asymptotic deflection angle. This method
offers an efficient computational approach that avoids the complexities of
integration and cumbersome iterative procedures typically associated with
deflection angle... | [
{
"created": "Tue, 30 Jan 2024 15:44:37 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Jan 2024 21:05:11 GMT",
"version": "v2"
}
] | 2024-02-02 | [
[
"Li",
"Zonghai",
""
]
] | In recent study in Ref.[7] (arXiv: 2401.12525), we have introduced a method aimed at calculating the weak-field asymptotic deflection angle. This method offers an efficient computational approach that avoids the complexities of integration and cumbersome iterative procedures typically associated with deflection angle c... |
1902.00949 | Baoyi Chen | Baoyi Chen, Feng-Li Lin and Bo Ning | Gedanken Experiments to Destroy a BTZ Black Hole | 26 pages, 4 figures | Phys. Rev. D 100, 044043 (2019) | 10.1103/PhysRevD.100.044043 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider gedanken experiments to destroy an extremal or near-extremal BTZ
black hole by throwing matter into the horizon. These black holes are vacuum
solutions to (2+1)-dimensional gravity theories, and are asymptotically
$\mathrm{AdS}_3$. Provided the null energy condition for the falling matter, we
prove the fo... | [
{
"created": "Sun, 3 Feb 2019 18:33:17 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Oct 2020 20:03:50 GMT",
"version": "v2"
}
] | 2020-10-30 | [
[
"Chen",
"Baoyi",
""
],
[
"Lin",
"Feng-Li",
""
],
[
"Ning",
"Bo",
""
]
] | We consider gedanken experiments to destroy an extremal or near-extremal BTZ black hole by throwing matter into the horizon. These black holes are vacuum solutions to (2+1)-dimensional gravity theories, and are asymptotically $\mathrm{AdS}_3$. Provided the null energy condition for the falling matter, we prove the foll... |
1104.1305 | Prado Martin-Moruno | Prado Martin-Moruno | Observers in an accelerated universe | revised version, accepted in EPJC | Eur. Phys. J. C71 (2011) 1845 | 10.1140/epjc/s10052-011-1845-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If the current acceleration of our Universe is due to a cosmological
constant, then a Coleman-De Luccia bubble will nucleate in our Universe. In
this work, we consider that our observations could be likely in this framework,
consisting in two infinite spaces, if a foliation by constant mean curvature
hypersurfaces is... | [
{
"created": "Thu, 7 Apr 2011 11:37:12 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Dec 2011 03:16:24 GMT",
"version": "v2"
}
] | 2015-03-19 | [
[
"Martin-Moruno",
"Prado",
""
]
] | If the current acceleration of our Universe is due to a cosmological constant, then a Coleman-De Luccia bubble will nucleate in our Universe. In this work, we consider that our observations could be likely in this framework, consisting in two infinite spaces, if a foliation by constant mean curvature hypersurfaces is t... |
2005.10844 | Yuki Sakakihara | Yuki Sakakihara, Daisuke Yoshida, Kazufumi Takahashi, Jerome Quintin | Theories with limited extrinsic curvature and a nonsingular anisotropic
universe | 19 pages, 2 figures; v2: matches published version | Phys. Rev. D 102, 084004 (2020) | 10.1103/PhysRevD.102.084004 | KOBE-COSMO-20-09 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a class of theories that can limit scalars constructed from the
extrinsic curvature. Applied to cosmology, this framework allows us to control
not only the Hubble parameter but also anisotropies without the problem of
Ostrogradsky ghost, which is in sharp contrast to the case of limiting
spacetime curvatur... | [
{
"created": "Thu, 21 May 2020 18:01:17 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Oct 2020 02:21:05 GMT",
"version": "v2"
}
] | 2020-10-06 | [
[
"Sakakihara",
"Yuki",
""
],
[
"Yoshida",
"Daisuke",
""
],
[
"Takahashi",
"Kazufumi",
""
],
[
"Quintin",
"Jerome",
""
]
] | We propose a class of theories that can limit scalars constructed from the extrinsic curvature. Applied to cosmology, this framework allows us to control not only the Hubble parameter but also anisotropies without the problem of Ostrogradsky ghost, which is in sharp contrast to the case of limiting spacetime curvature ... |
1106.4913 | Betti Hartmann | Victor Enolskii, Betti Hartmann, Valeria Kagramanova, Jutta Kunz,
Claus Laemmerzahl and Parinya Sirimachan | Particle motion in Horava-Lifshitz black hole space-times | 16 pages including 13 figures; minor changes, to match version
accepted for publication in Phys. Rev. D | null | 10.1103/PhysRevD.84.084011 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the particle motion in the space-time of a Kehagias-Sfetsos (KS)
black hole. This is a static spherically symmetric solution of a
Horava-Lifshitz gravity model that reduces to General Relativity in the IR
limit and deviates slightly from detailed balance. Taking the viewpoint that
the model is essentially a ... | [
{
"created": "Fri, 24 Jun 2011 09:00:00 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Aug 2011 10:55:37 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Enolskii",
"Victor",
""
],
[
"Hartmann",
"Betti",
""
],
[
"Kagramanova",
"Valeria",
""
],
[
"Kunz",
"Jutta",
""
],
[
"Laemmerzahl",
"Claus",
""
],
[
"Sirimachan",
"Parinya",
""
]
] | We study the particle motion in the space-time of a Kehagias-Sfetsos (KS) black hole. This is a static spherically symmetric solution of a Horava-Lifshitz gravity model that reduces to General Relativity in the IR limit and deviates slightly from detailed balance. Taking the viewpoint that the model is essentially a (3... |
2103.16954 | Tobias Mistele | Tobias Mistele | Cherenkov radiation from stars constrains hybrid MOND dark matter models | 13 pages, 3 figures, accepted for publication in JCAP | JCAP 2211 (2022) 008 | 10.1088/1475-7516/2022/11/008 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new method to constrain alternative models for dark matter with
observations. Specifically, we consider hybrid models in which cold dark matter
(CDM) phenomena on cosmological scales and Modified Newtonian Dynamics (MOND)
phenomena on galactic scales share a common origin. Various such models were
recent... | [
{
"created": "Wed, 31 Mar 2021 10:14:57 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Aug 2022 13:38:59 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Sep 2022 09:29:46 GMT",
"version": "v3"
},
{
"created": "Wed, 26 Oct 2022 09:40:35 GMT",
"version": "v4"
}
] | 2022-11-09 | [
[
"Mistele",
"Tobias",
""
]
] | We propose a new method to constrain alternative models for dark matter with observations. Specifically, we consider hybrid models in which cold dark matter (CDM) phenomena on cosmological scales and Modified Newtonian Dynamics (MOND) phenomena on galactic scales share a common origin. Various such models were recently... |
gr-qc/0610108 | Yapeng Hu | Yapeng Hu, Guihua Tian and Zheng Zhao | Some properties of accelerating observers in the Schwarzschild space | 7 pages, 2 figures, typos corrected and figures added, the version
accepted by Mod.Phys.Lett.A; published version | Mod.Phys.Lett.A24:229-238,2009 | 10.1142/S0217732309026760 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that observers will be accelerated when they approach the
planets. Thus, discussing the properties of accelerating observers in the
Schwarzschild space is of sense. For the sake of simplicity, we can construct
these observers' world lines by comparing with the observers in the Hawking
effect and Unru... | [
{
"created": "Sun, 22 Oct 2006 14:12:46 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Nov 2006 15:18:42 GMT",
"version": "v2"
},
{
"created": "Tue, 25 Mar 2008 12:06:59 GMT",
"version": "v3"
},
{
"created": "Wed, 18 Feb 2009 06:18:19 GMT",
"version": "v4"
}
] | 2009-03-04 | [
[
"Hu",
"Yapeng",
""
],
[
"Tian",
"Guihua",
""
],
[
"Zhao",
"Zheng",
""
]
] | It is well known that observers will be accelerated when they approach the planets. Thus, discussing the properties of accelerating observers in the Schwarzschild space is of sense. For the sake of simplicity, we can construct these observers' world lines by comparing with the observers in the Hawking effect and Unruh ... |
gr-qc/0405094 | Garth Antony Barber | Garth A. Barber | Self Creation Cosmology - An Alternative Gravitational Theory | LaTex, 30 pages; GP-B geodetic measurement corrected for Thomas
precession to 4.4096 arcsec/yr, published in 'Horizons in World Physics,
Volume 247: New Developments in Quantum Cosmology Research', Nova Science
Publishers, Inc. New York | null | null | null | gr-qc | null | The premature acceptance of the standard cosmological model, the 'LambdaCDM'
paradigm, is questioned; Self Creation Cosmology is offered as an alternative
and shown to be as equally concordant with observed cosmological constraints
and local observations including the EEP. The Brans Dicke theory is modified to
enable... | [
{
"created": "Tue, 18 May 2004 10:35:02 GMT",
"version": "v1"
},
{
"created": "Tue, 18 May 2004 21:07:20 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Jun 2004 09:08:18 GMT",
"version": "v3"
},
{
"created": "Sun, 14 Aug 2005 16:43:34 GMT",
"version": "v4"
},
{
"c... | 2007-05-23 | [
[
"Barber",
"Garth A.",
""
]
] | The premature acceptance of the standard cosmological model, the 'LambdaCDM' paradigm, is questioned; Self Creation Cosmology is offered as an alternative and shown to be as equally concordant with observed cosmological constraints and local observations including the EEP. The Brans Dicke theory is modified to enable t... |
1108.0571 | Pablo Cerd\'a-Dur\'an | Isabel Cordero-Carri\'on, Pablo Cerd\'a-Dur\'an and Jos\'e Mar\'ia
Ib\'a\~nez | Gravitational waves in dynamical spacetimes with matter content in the
Fully Constrained Formulation | 17 pages, 9 figures, 2 tables, accepted for publication in PRD | null | 10.1103/PhysRevD.85.044023 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Fully Constrained Formulation (FCF) of General Relativity is a novel
framework introduced as an alternative to the hyperbolic formulations
traditionally used in numerical relativity. The FCF equations form a hybrid
elliptic-hyperbolic system of equations including explicitly the constraints.
We present an implici... | [
{
"created": "Tue, 2 Aug 2011 13:57:10 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Apr 2012 11:20:16 GMT",
"version": "v2"
}
] | 2015-05-30 | [
[
"Cordero-Carrión",
"Isabel",
""
],
[
"Cerdá-Durán",
"Pablo",
""
],
[
"Ibáñez",
"José María",
""
]
] | The Fully Constrained Formulation (FCF) of General Relativity is a novel framework introduced as an alternative to the hyperbolic formulations traditionally used in numerical relativity. The FCF equations form a hybrid elliptic-hyperbolic system of equations including explicitly the constraints. We present an implicit-... |
gr-qc/0604011 | Dmitri Vassiliev | Dmitri Vassiliev | A teleparallel model for the neutrino | 4 pages, REVTeX | Phys.Rev.D75:025006,2007 | 10.1103/PhysRevD.75.025006 | null | gr-qc hep-th math.DG | null | The main result of the paper is a new representation for the Weyl Lagrangian
(massless Dirac Lagrangian). As the dynamical variable we use the coframe, i.e.
an orthonormal tetrad of covector fields. We write down a simple Lagrangian -
wedge product of axial torsion with a lightlike element of the coframe - and
show t... | [
{
"created": "Tue, 4 Apr 2006 10:26:07 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Vassiliev",
"Dmitri",
""
]
] | The main result of the paper is a new representation for the Weyl Lagrangian (massless Dirac Lagrangian). As the dynamical variable we use the coframe, i.e. an orthonormal tetrad of covector fields. We write down a simple Lagrangian - wedge product of axial torsion with a lightlike element of the coframe - and show tha... |
gr-qc/9902047 | Jeongwon Ho | Jeongwon Ho, Won T. Kim, Young-Jai Park | Spacetime Duality of BTZ Black Hole | 9 pages, no figures, 1 reference added, talk given at 5th
Italian-Korean Symposium on Relativistic Astrophysics, Seoul and Suanbo,
Korea, 1-7 Sept. 1997 | J.KoreanPhys.Soc.33:S541-S544,1998 | null | J. Korean Phys. Soc. 33 (1998) S541-S544 | gr-qc hep-th | null | We consider the duality of the quasilocal black hole thermodynamics,
explicitly the quasilocal black hole thermodynamic first law, in BTZ black hole
solution as a special one of the three-dimensional low energy effective string
theory.
| [
{
"created": "Wed, 17 Feb 1999 03:13:19 GMT",
"version": "v1"
},
{
"created": "Sun, 21 Feb 1999 06:56:30 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Ho",
"Jeongwon",
""
],
[
"Kim",
"Won T.",
""
],
[
"Park",
"Young-Jai",
""
]
] | We consider the duality of the quasilocal black hole thermodynamics, explicitly the quasilocal black hole thermodynamic first law, in BTZ black hole solution as a special one of the three-dimensional low energy effective string theory. |
1808.01497 | Cristobal Corral | Crist\'obal Corral and Yuri Bonder | Symmetry algebra in gauge theories of gravity | 14 pages, improved version | Class. Quantum Grav. 36 (2019) 045002 | 10.1088/1361-6382/aafce1 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Diffeomorphisms and an internal symmetry (e.g., local Lorentz invariance) are
typically regarded as the symmetries of any geometrical gravity theory,
including general relativity. In the first-order formalism, diffeomorphisms can
be thought of as a derived symmetry from the so-called local translations,
which have im... | [
{
"created": "Sat, 4 Aug 2018 15:55:19 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Dec 2018 05:06:14 GMT",
"version": "v2"
}
] | 2019-01-29 | [
[
"Corral",
"Cristóbal",
""
],
[
"Bonder",
"Yuri",
""
]
] | Diffeomorphisms and an internal symmetry (e.g., local Lorentz invariance) are typically regarded as the symmetries of any geometrical gravity theory, including general relativity. In the first-order formalism, diffeomorphisms can be thought of as a derived symmetry from the so-called local translations, which have impr... |
2005.03121 | Xiaoshu Liu | Xiaoshu Liu, Vincent F. He, Timothy M. Mikulski, Daria Palenova,
Claire E. Williams, Jolien Creighton, Jay D. Tasson | Measuring the Speed of Gravitational Waves from the First and Second
Observing Run of Advanced LIGO and Advanced Virgo | 8 pages, 6 figures | Phys. Rev. D 102, 024028 (2020) | 10.1103/PhysRevD.102.024028 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The speed of gravitational waves for a single observation can be measured by
the time delay among gravitational-wave detectors with Bayesian inference. Then
multiple measurements can be combined to produce a more accurate result. From
the near simultaneous detection of gravitational waves and gamma rays
originating f... | [
{
"created": "Wed, 6 May 2020 20:23:58 GMT",
"version": "v1"
},
{
"created": "Fri, 8 May 2020 22:01:34 GMT",
"version": "v2"
},
{
"created": "Mon, 13 Jul 2020 21:48:51 GMT",
"version": "v3"
}
] | 2020-07-15 | [
[
"Liu",
"Xiaoshu",
""
],
[
"He",
"Vincent F.",
""
],
[
"Mikulski",
"Timothy M.",
""
],
[
"Palenova",
"Daria",
""
],
[
"Williams",
"Claire E.",
""
],
[
"Creighton",
"Jolien",
""
],
[
"Tasson",
"Jay D.",
""
... | The speed of gravitational waves for a single observation can be measured by the time delay among gravitational-wave detectors with Bayesian inference. Then multiple measurements can be combined to produce a more accurate result. From the near simultaneous detection of gravitational waves and gamma rays originating fro... |
1608.06783 | Adam Pound | Jeremy Miller, Barry Wardell, and Adam Pound | Second-order perturbation theory: the problem of infinite mode coupling | 18 pages, 6 figures, submitted to PRD | Phys. Rev. D 94, 104018 (2016) | 10.1103/PhysRevD.94.104018 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Second-order self-force computations, which will be essential in modeling
extreme-mass-ratio inspirals, involve two major new difficulties that were not
present at first order. One is the problem of large scales, discussed in [Phys.
Rev. D 92, 104047 (2015)]. Here we discuss the second difficulty, which occurs
instea... | [
{
"created": "Wed, 24 Aug 2016 11:37:32 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Miller",
"Jeremy",
""
],
[
"Wardell",
"Barry",
""
],
[
"Pound",
"Adam",
""
]
] | Second-order self-force computations, which will be essential in modeling extreme-mass-ratio inspirals, involve two major new difficulties that were not present at first order. One is the problem of large scales, discussed in [Phys. Rev. D 92, 104047 (2015)]. Here we discuss the second difficulty, which occurs instead ... |
1012.0389 | S Habib Mazharimousavi | S. Habib Mazharimousavi and M. Halilsoy | Black p-Branes versus black holes in non-asymptotically flat
Einstein-Yang-Mills theory | 10 pages, 1 figure, updated version. Final version to be published in
EPJP | Eur. Phys. J. Plus 131, 202 (2016) | 10.1140/epjp/i2016-16302-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a class of non-asymptotically flat (NAF) charged black p-branes
(BpB) with p-compact dimensions in higher dimensional Einstein-Yang-Mills
theory. Asymptotically the NAF structure manifests itself as an anti-de-sitter
spacetime. We determine the total mass / energy enclosed in a thin-shell
located outside t... | [
{
"created": "Thu, 2 Dec 2010 12:44:36 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Mar 2011 17:09:06 GMT",
"version": "v2"
},
{
"created": "Mon, 4 Apr 2016 06:17:04 GMT",
"version": "v3"
},
{
"created": "Tue, 16 Aug 2016 14:27:22 GMT",
"version": "v4"
}
] | 2016-09-07 | [
[
"Mazharimousavi",
"S. Habib",
""
],
[
"Halilsoy",
"M.",
""
]
] | We present a class of non-asymptotically flat (NAF) charged black p-branes (BpB) with p-compact dimensions in higher dimensional Einstein-Yang-Mills theory. Asymptotically the NAF structure manifests itself as an anti-de-sitter spacetime. We determine the total mass / energy enclosed in a thin-shell located outside the... |
0905.0017 | David P. Rideout | David Rideout and Petros Wallden | Emergence of spatial structure from causal sets | 21 pages, 21 figures; proceedings contribution for DICE 2008, to
appear in Journal of Physics: Conference Series | J.Phys.Conf.Ser.174:012017,2009 | 10.1088/1742-6596/174/1/012017 | pi-qg-129 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There are numerous indications that a discrete substratum underlies continuum
spacetime. Any fundamentally discrete approach to quantum gravity must provide
some prescription for how continuum properties emerge from the underlying
discreteness. The causal set approach, in which the fundamental relation is
based upon ... | [
{
"created": "Thu, 30 Apr 2009 21:29:44 GMT",
"version": "v1"
}
] | 2009-08-25 | [
[
"Rideout",
"David",
""
],
[
"Wallden",
"Petros",
""
]
] | There are numerous indications that a discrete substratum underlies continuum spacetime. Any fundamentally discrete approach to quantum gravity must provide some prescription for how continuum properties emerge from the underlying discreteness. The causal set approach, in which the fundamental relation is based upon ca... |
2001.00180 | Jaime Manuel Cabrera | Jaime Manuel Cabrera | Faddeev-Jackiw and Canonical Analysis of the Jackiw-Teitelboim model
written as a BF theory | 16 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Jackiw-Teitelboim model written as a BF theory in two dimensions is
analyzed by using the Dirac's and Faddeev-Jackiw formalism. The analysis
consists in finding the full structure of the constraints, the gauge
transformations, the counting of degrees of freedom and the generalized
Faddeev-Jackiw brackets. The Poi... | [
{
"created": "Wed, 1 Jan 2020 09:56:49 GMT",
"version": "v1"
},
{
"created": "Sun, 7 Nov 2021 00:12:45 GMT",
"version": "v2"
},
{
"created": "Tue, 14 Mar 2023 02:46:39 GMT",
"version": "v3"
}
] | 2023-03-15 | [
[
"Cabrera",
"Jaime Manuel",
""
]
] | The Jackiw-Teitelboim model written as a BF theory in two dimensions is analyzed by using the Dirac's and Faddeev-Jackiw formalism. The analysis consists in finding the full structure of the constraints, the gauge transformations, the counting of degrees of freedom and the generalized Faddeev-Jackiw brackets. The Poinc... |
1001.3505 | Alok Laddha | Alok Laddha, Madhavan Varadarajan | Polymer quantization of the free scalar field and its classical limit | 58 pages | Class.Quant.Grav.27:175010,2010 | 10.1088/0264-9381/27/17/175010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Building on prior work, a generally covariant reformulation of free scalar
field theory on the flat Lorentzian cylinder is quantized using Loop Quantum
Gravity (LQG) type `polymer' representations. This quantization of the {\em
continuum} classical theory yields a quantum theory which lives on a discrete
spacetime la... | [
{
"created": "Wed, 20 Jan 2010 08:23:24 GMT",
"version": "v1"
}
] | 2015-01-30 | [
[
"Laddha",
"Alok",
""
],
[
"Varadarajan",
"Madhavan",
""
]
] | Building on prior work, a generally covariant reformulation of free scalar field theory on the flat Lorentzian cylinder is quantized using Loop Quantum Gravity (LQG) type `polymer' representations. This quantization of the {\em continuum} classical theory yields a quantum theory which lives on a discrete spacetime latt... |
2001.02918 | Rita Neves | Mercedes Mart\'in-Benito, Rita B. Neves | The Effect of a positive cosmological constant on the bounce of Loop
Quantum Cosmology | 17 pages, 3 figures, v2: matches published version | Mathematics 2020, 8(2), 186 | 10.3390/math8020186 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide an analytical solution to the quantum dynamics of a flat
Friedmann-Lema\^itre- Robertson-Walker model with a massless scalar field in
the presence of a small and positive cosmological constant, in the context of
Loop Quantum Cosmology. We use a perturbative treatment with respect to the
model without a cos... | [
{
"created": "Thu, 9 Jan 2020 10:50:30 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Feb 2020 10:48:21 GMT",
"version": "v2"
}
] | 2020-02-06 | [
[
"Martín-Benito",
"Mercedes",
""
],
[
"Neves",
"Rita B.",
""
]
] | We provide an analytical solution to the quantum dynamics of a flat Friedmann-Lema\^itre- Robertson-Walker model with a massless scalar field in the presence of a small and positive cosmological constant, in the context of Loop Quantum Cosmology. We use a perturbative treatment with respect to the model without a cosmo... |
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