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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2110.15266 | J. Brian Pitts | J. Brian Pitts | Change in Hamiltonian General Relativity with Spinors | Forthcoming in Foundations of Physics | null | 10.1007/s10701-021-00509-x | null | gr-qc hep-th physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Hamiltonian GR, change has seemed to be missing, defined only
asymptotically, or otherwise obscured at best. By construing change as
essential time dependence, can one find change locally in Hamiltonian GR with
spinors?
This paper is motivated by tendencies in space-time philosophy to slight
fermionic/spinorial ... | [
{
"created": "Thu, 28 Oct 2021 16:21:56 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Oct 2021 07:55:17 GMT",
"version": "v2"
}
] | 2021-11-24 | [
[
"Pitts",
"J. Brian",
""
]
] | In Hamiltonian GR, change has seemed to be missing, defined only asymptotically, or otherwise obscured at best. By construing change as essential time dependence, can one find change locally in Hamiltonian GR with spinors? This paper is motivated by tendencies in space-time philosophy to slight fermionic/spinorial matt... |
0704.2406 | Robert Bock | Robert D. Bock | Dynamics of the universe in the modified unimodular theory of gravity | null | null | null | null | gr-qc astro-ph | null | The equations that govern the dynamics of the universe in the modified
unimodular theory of gravity are derived. We find a mechanism for inflation in
the early universe without postulating a false vacuum state during the first
$10^{-35}$ seconds after the Big Bang. In addition, we find a natural
explanation for the a... | [
{
"created": "Wed, 18 Apr 2007 19:03:42 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bock",
"Robert D.",
""
]
] | The equations that govern the dynamics of the universe in the modified unimodular theory of gravity are derived. We find a mechanism for inflation in the early universe without postulating a false vacuum state during the first $10^{-35}$ seconds after the Big Bang. In addition, we find a natural explanation for the acc... |
1308.0232 | Abhik Kumar Sanyal Dr. | Soumendranath Ruz, Subhra Debnath, Abhik Kumar Sanyal and Bijan Modak | Euclidean wormholes with minimally coupled scalar fields | 28 pages, 5 figures, To appear in Classical and Quantum Gravity | null | 10.1088/0264-9381/30/17/175013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A detailed study of quantum and semiclassical Euclidean wormholes for
Einstein's theory with a minimally coupled scalar field has been performed for
a class of potentials. Massless, constant, massive (quadratic in the scalar
field) and inverse (linear) potentials admit Hawking and Page wormhole boundary
condition bot... | [
{
"created": "Thu, 1 Aug 2013 14:56:55 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Ruz",
"Soumendranath",
""
],
[
"Debnath",
"Subhra",
""
],
[
"Sanyal",
"Abhik Kumar",
""
],
[
"Modak",
"Bijan",
""
]
] | A detailed study of quantum and semiclassical Euclidean wormholes for Einstein's theory with a minimally coupled scalar field has been performed for a class of potentials. Massless, constant, massive (quadratic in the scalar field) and inverse (linear) potentials admit Hawking and Page wormhole boundary condition both ... |
gr-qc/9304017 | Piotr Koc | Piotr Koc | Condensation of Matter and Trapped Surfaces in Quasi-Polar Gauge | 10 pages, emTeX Version 3.0 [3a] | null | null | null | gr-qc | null | We continue the investigation of formation of trapped surfaces in strongly
curved , conformally flat geometries. Initial data in quasi-polar gauges rather
then maximal ones are considered. This implies that apparent horizons coincide
with minimal surfaces. Necessary and sufficient conditions for the formation of
trap... | [
{
"created": "Wed, 14 Apr 1993 10:48:18 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Koc",
"Piotr",
""
]
] | We continue the investigation of formation of trapped surfaces in strongly curved , conformally flat geometries. Initial data in quasi-polar gauges rather then maximal ones are considered. This implies that apparent horizons coincide with minimal surfaces. Necessary and sufficient conditions for the formation of trappe... |
gr-qc/0204074 | Ghazal Geshnizjani | Ghazal Geshnizjani and Robert Brandenberger | Back Reaction And Local Cosmological Expansion Rate | 7 pages, No figures | Phys.Rev.D66:123507,2002 | 10.1103/PhysRevD.66.123507 | null | gr-qc astro-ph hep-ph hep-th | null | We calculate the back reaction of cosmological perturbations on a general
relativistic variable which measures the local expansion rate of the Universe.
Specifically, we consider a cosmological model in which matter is described by
a single field. We analyze back reaction both in a matter dominated Universe
and in a ... | [
{
"created": "Tue, 23 Apr 2002 21:07:43 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Geshnizjani",
"Ghazal",
""
],
[
"Brandenberger",
"Robert",
""
]
] | We calculate the back reaction of cosmological perturbations on a general relativistic variable which measures the local expansion rate of the Universe. Specifically, we consider a cosmological model in which matter is described by a single field. We analyze back reaction both in a matter dominated Universe and in a ph... |
gr-qc/9302021 | null | B. L. Hu | Fluctuation, Dissipation and Irreversibility in Cosmology | 31pp, UMDPP #93-55 | null | null | null | gr-qc | null | We discuss the appearance of time-asymmetric behavior in physical processes
in cosmology and in the dynamics of the Universe itself. We begin with an
analysis of the nature and origin of irreversibility in well-known physical
processes such as dispersion, diffusion, dissipation and mixing, and make the
distinction be... | [
{
"created": "Thu, 18 Feb 1993 22:51:00 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hu",
"B. L.",
""
]
] | We discuss the appearance of time-asymmetric behavior in physical processes in cosmology and in the dynamics of the Universe itself. We begin with an analysis of the nature and origin of irreversibility in well-known physical processes such as dispersion, diffusion, dissipation and mixing, and make the distinction betw... |
1107.0315 | Gerald Marsh | Gerald E. Marsh | Dark Matter and Charged Exotic Dust | 11 pages, 2 figures | J. Phys. & Astronomy Vol. 3, Issue 3 (2013) | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The density profiles of dark matter halos are often modeled by an approximate
solution to the isothermal Lane-Emden equation with suitable boundary
conditions at the origin. It is shown here that such a model corresponds to an
exact solution of the Einstein-Maxwell equations for exotic charged dust. It is
also shown ... | [
{
"created": "Fri, 1 Jul 2011 01:21:08 GMT",
"version": "v1"
}
] | 2013-11-07 | [
[
"Marsh",
"Gerald E.",
""
]
] | The density profiles of dark matter halos are often modeled by an approximate solution to the isothermal Lane-Emden equation with suitable boundary conditions at the origin. It is shown here that such a model corresponds to an exact solution of the Einstein-Maxwell equations for exotic charged dust. It is also shown th... |
0808.3805 | Joseph Romano | M. Rakhmanov, J. D. Romano, J. T. Whelan | High-frequency corrections to the detector response and their effect on
searches for gravitational waves | 13 pages, 6 figures, accepted by Classical and Quantum Gravity for
GWDAW12 proceedings | Class.Quant.Grav.25:184017,2008 | 10.1088/0264-9381/25/18/184017 | LIGO-P080036 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Searches for gravitational waves with km-scale laser interferometers often
involve the long-wavelength approximation to describe the detector response.
The prevailing assumption is that the corrections to the detector response due
to its finite size are small and the errors due to the long-wavelength
approximation ar... | [
{
"created": "Thu, 28 Aug 2008 00:39:03 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Rakhmanov",
"M.",
""
],
[
"Romano",
"J. D.",
""
],
[
"Whelan",
"J. T.",
""
]
] | Searches for gravitational waves with km-scale laser interferometers often involve the long-wavelength approximation to describe the detector response. The prevailing assumption is that the corrections to the detector response due to its finite size are small and the errors due to the long-wavelength approximation are ... |
2404.03721 | Lorenzo Mirasola | Lorenzo Mirasola and Paola Leaci and Pia Astone and Luca D'Onofrio and
Simone Dall'Osso and Alessandro De Falco and Michela Lai and Simone
Mastrogiovanni and Cristiano Palomba and Alessandro Riggio and Andrea Sanna | A new semi-coherent targeted search for continuous gravitational waves
from pulsars in binary systems | null | null | null | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | We present a novel semi-coherent targeted search method for continuous
gravitational waves (CW) emitted by pulsars in binary systems. The method is
based on a custom optimization of the coherence time according to the orbital
parameters and their uncertainties, as provided by electromagnetic
observations. While rotat... | [
{
"created": "Thu, 4 Apr 2024 18:00:01 GMT",
"version": "v1"
}
] | 2024-04-08 | [
[
"Mirasola",
"Lorenzo",
""
],
[
"Leaci",
"Paola",
""
],
[
"Astone",
"Pia",
""
],
[
"D'Onofrio",
"Luca",
""
],
[
"Dall'Osso",
"Simone",
""
],
[
"De Falco",
"Alessandro",
""
],
[
"Lai",
"Michela",
""
],
[
... | We present a novel semi-coherent targeted search method for continuous gravitational waves (CW) emitted by pulsars in binary systems. The method is based on a custom optimization of the coherence time according to the orbital parameters and their uncertainties, as provided by electromagnetic observations. While rotatin... |
2209.15014 | Don N. Page | Don N. Page | Critical Gravitational Inspiral of Two Massless Particles | 31 pages, LaTeX. The revised version discusses alternatives to the
original conjectures, such as the possibility for two massless particles to
convert to any number of black holes that are unbound to each other | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If two ultrarelativistic nonrotating black holes of masses $m_1$ and $m_2$
approach each other with fixed center-of-momentum (COM) total energy $E =
\sqrt{s} \gg (m_1+m_2)c^2$ that has a corresponding Schwarzschild radius $R =
2GE/c^4$ much larger than the Schwarzschild radii of the individual black
holes, here it is... | [
{
"created": "Thu, 29 Sep 2022 18:00:00 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Oct 2022 23:26:21 GMT",
"version": "v2"
}
] | 2022-10-10 | [
[
"Page",
"Don N.",
""
]
] | If two ultrarelativistic nonrotating black holes of masses $m_1$ and $m_2$ approach each other with fixed center-of-momentum (COM) total energy $E = \sqrt{s} \gg (m_1+m_2)c^2$ that has a corresponding Schwarzschild radius $R = 2GE/c^4$ much larger than the Schwarzschild radii of the individual black holes, here it is c... |
1502.06720 | Brihaye Yves | Yves Brihaye, Ruben Manvelyan, Eugen Radu and D. H. Tchrakian | Charged isotropic non-Abelian dyonic black branes | 14 pages, 4 figures | null | 10.1016/j.physletb.2015.04.029 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct black holes with a Ricci flat horizon in Einstein--Yang-Mills
theory with a negative cosmological constant, which approach asymptotically an
AdS$_d$ spacetime background (with $d\geq 4$). These solutions are isotropic,
$i.e.$ all space directions in a hypersurface of constant radial and time
coordinates ... | [
{
"created": "Tue, 24 Feb 2015 09:15:07 GMT",
"version": "v1"
}
] | 2015-05-20 | [
[
"Brihaye",
"Yves",
""
],
[
"Manvelyan",
"Ruben",
""
],
[
"Radu",
"Eugen",
""
],
[
"Tchrakian",
"D. H.",
""
]
] | We construct black holes with a Ricci flat horizon in Einstein--Yang-Mills theory with a negative cosmological constant, which approach asymptotically an AdS$_d$ spacetime background (with $d\geq 4$). These solutions are isotropic, $i.e.$ all space directions in a hypersurface of constant radial and time coordinates ar... |
2209.04060 | Lorenz Zwick | Lorenz Zwick, Pedro R. Capelo, Lucio Mayer | Priorities in gravitational waveforms for future space-borne detectors:
vacuum accuracy or environment? | Accepted in MNRAS | null | 10.1093/mnras/stad707 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In preparation for future space-borne gravitational-wave (GW) detectors,
should the modelling effort focus on high-precision vacuum templates or on the
astrophysical environment of the sources? We perform a systematic comparison of
the phase contributions caused by 1) known environmental effects in both
gaseous and s... | [
{
"created": "Thu, 8 Sep 2022 23:27:37 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Mar 2023 15:51:10 GMT",
"version": "v2"
}
] | 2023-03-15 | [
[
"Zwick",
"Lorenz",
""
],
[
"Capelo",
"Pedro R.",
""
],
[
"Mayer",
"Lucio",
""
]
] | In preparation for future space-borne gravitational-wave (GW) detectors, should the modelling effort focus on high-precision vacuum templates or on the astrophysical environment of the sources? We perform a systematic comparison of the phase contributions caused by 1) known environmental effects in both gaseous and ste... |
0807.0255 | Jos\'e Wadih Maluf Dr. | J. W. Maluf and S. C. Ulhoa | The energy-momentum of plane-fronted gravitational waves in the
teleparallel equivalent of GR | 11 pages, no figures. This submission comprises the published version
(Phys. Rev. D 78, 047502 (2008)) and takes into account the Erratum (Phys.
Rev. D 78, 069901(E) (2008)). One of the conclusions of the paper is changed.
The energy-momentum of plane-fronted gravitational waves contained in an
arbitrary space ... | Phys.Rev.D78:047502,2008; Erratum-ibid.D78:069901,2008 | 10.1103/PhysRevD.78.047502 10.1103/PhysRevD.78.069901 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that in the framework of the teleparallel equivalent of general
relativity the gravitational energy-momentum of plane-fronted gravitational
waves contained in an arbitrary three-dimensional volume V may be easily
obtained and is non-negative in the frame of static observers.
| [
{
"created": "Tue, 1 Jul 2008 23:39:48 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Sep 2008 18:49:56 GMT",
"version": "v2"
}
] | 2014-11-18 | [
[
"Maluf",
"J. W.",
""
],
[
"Ulhoa",
"S. C.",
""
]
] | We show that in the framework of the teleparallel equivalent of general relativity the gravitational energy-momentum of plane-fronted gravitational waves contained in an arbitrary three-dimensional volume V may be easily obtained and is non-negative in the frame of static observers. |
1902.03669 | Vasilis Oikonomou | S. Nojiri, S.D. Odintsov, V.K. Oikonomou | $k$-essence $f(R)$ Gravity Inflation | NPB Accepted | null | 10.1016/j.nuclphysb.2019.02.008 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study a modified version of $f(R)$ gravity in which higher
order kinetic terms of a scalar field are added in the action of vacuum $f(R)$
gravity. This type of theory is a type of $k$-essence $f(R)$ gravity, and it
belongs to the general class of $f(R,\phi ,X)$ theories of gravity, where
$\phi$ is a s... | [
{
"created": "Sun, 10 Feb 2019 20:45:48 GMT",
"version": "v1"
}
] | 2019-03-27 | [
[
"Nojiri",
"S.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this work we study a modified version of $f(R)$ gravity in which higher order kinetic terms of a scalar field are added in the action of vacuum $f(R)$ gravity. This type of theory is a type of $k$-essence $f(R)$ gravity, and it belongs to the general class of $f(R,\phi ,X)$ theories of gravity, where $\phi$ is a sca... |
1105.1980 | Adam D. Helfer | Adam D. Helfer | Black holes reconsidered | Write-up of talks given at BSCG XIV; 50 pages, 6 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I review elements of the foundations of black-hole theory with attention to
problematic issues, and describe some techniques which either seem to help with
the difficulties or at least investigate their scope.
The definition of black holes via event horizons has been problematic because
it depends on knowing the gl... | [
{
"created": "Tue, 10 May 2011 15:39:33 GMT",
"version": "v1"
}
] | 2011-05-11 | [
[
"Helfer",
"Adam D.",
""
]
] | I review elements of the foundations of black-hole theory with attention to problematic issues, and describe some techniques which either seem to help with the difficulties or at least investigate their scope. The definition of black holes via event horizons has been problematic because it depends on knowing the global... |
gr-qc/9804083 | Voja Radovanovic | Maja Buric, Voja Radovanovic and Aleksandar Mikovic | One-loop corrections for Schwarzschild black hole via 2D dilaton gravity | 19 pages, Latex, some corrections are made in Sect. 4 | Phys.Rev.D59:084002,1999 | 10.1103/PhysRevD.59.084002 | null | gr-qc hep-th | null | We study quantum corrections for the Schwarzshild black hole by considering
it as a vacuum solution of a 2D dilaton gravity theory obtained by spherical
reduction of 4D gravity coupled with matter. We find perturbatively the vacuum
solution for the standard one-loop effective action in the case of null-dust
matter an... | [
{
"created": "Thu, 30 Apr 1998 13:29:56 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Sep 1998 13:22:36 GMT",
"version": "v2"
}
] | 2009-01-16 | [
[
"Buric",
"Maja",
""
],
[
"Radovanovic",
"Voja",
""
],
[
"Mikovic",
"Aleksandar",
""
]
] | We study quantum corrections for the Schwarzshild black hole by considering it as a vacuum solution of a 2D dilaton gravity theory obtained by spherical reduction of 4D gravity coupled with matter. We find perturbatively the vacuum solution for the standard one-loop effective action in the case of null-dust matter and ... |
2209.03351 | Lijing Shao | Lijing Shao, Kent Yagi | Neutron stars as extreme laboratories for gravity tests | 5 pages, 2 figures; accepted by Science Bulletin | Sci. Bull. 67 (2022) 1946 | 10.1016/j.scib.2022.09.018 | null | gr-qc astro-ph.HE nucl-th | http://creativecommons.org/licenses/by/4.0/ | Neutron stars are versatile in their application to studying various
important aspects of fundamental physics, in particular strong-field gravity
tests and the equation of state for super-dense nuclear matter at low
temperatures. However, in many cases these two objectives are degenerate to
each other. We discuss how... | [
{
"created": "Wed, 7 Sep 2022 07:29:04 GMT",
"version": "v1"
}
] | 2022-10-18 | [
[
"Shao",
"Lijing",
""
],
[
"Yagi",
"Kent",
""
]
] | Neutron stars are versatile in their application to studying various important aspects of fundamental physics, in particular strong-field gravity tests and the equation of state for super-dense nuclear matter at low temperatures. However, in many cases these two objectives are degenerate to each other. We discuss how p... |
gr-qc/0509054 | Edward Anderson | E. Anderson | Relational particle models as toy models for quantum gravity and quantum
cosmology | Talk at Einstein centenary conference, Paris. Minor update with
references | null | 10.1063/1.2399586 | null | gr-qc | null | It is argued that substantial portions of both Newtonian particle mechanics
and general relativity can be viewed as relational (rather than absolute)
theories. I furthermore use the relational particle models as toy models to
investigate the problem of time in closed-universe canonical quantum general
relativity. I c... | [
{
"created": "Wed, 14 Sep 2005 23:01:25 GMT",
"version": "v1"
},
{
"created": "Mon, 22 May 2006 17:42:21 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Anderson",
"E.",
""
]
] | It is argued that substantial portions of both Newtonian particle mechanics and general relativity can be viewed as relational (rather than absolute) theories. I furthermore use the relational particle models as toy models to investigate the problem of time in closed-universe canonical quantum general relativity. I con... |
2302.09065 | Massimiliano Maria Riva | Massimiliano Maria Riva, Filippo Vernizzi and Leong Khim Wong | Angular momentum balance in gravitational two-body scattering: Flux,
memory, and supertranslation invariance | 21 pages, 1 figure. Added a translation at null infinity to ensure
Lorentz covariance of the balance law (see note added), and updated
references | null | null | DESY-23-019 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Two puzzles continue to plague our understanding of angular momentum balance
in the context of gravitational two-body scattering. First, because the
standard definition of the Bondi angular momentum $J$ is subject to a
supertranslation ambiguity, it has been shown that when the corresponding flux
$F_J$ is expanded in... | [
{
"created": "Fri, 17 Feb 2023 18:58:49 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Jun 2023 08:45:31 GMT",
"version": "v2"
}
] | 2023-06-06 | [
[
"Riva",
"Massimiliano Maria",
""
],
[
"Vernizzi",
"Filippo",
""
],
[
"Wong",
"Leong Khim",
""
]
] | Two puzzles continue to plague our understanding of angular momentum balance in the context of gravitational two-body scattering. First, because the standard definition of the Bondi angular momentum $J$ is subject to a supertranslation ambiguity, it has been shown that when the corresponding flux $F_J$ is expanded in p... |
2312.05381 | Giovanni Otalora | Manuel Gonzalez-Espinoza, Giovanni Otalora, Lucila Kraiselburd, Susana
Landau | Screening fifth forces in scalar-vector-tensor theories | 17 pages, 3 figures. Updated to match the published version in PRD | Phys. Rev. D 109, 063542 (2024) | 10.1103/PhysRevD.109.063542 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a screening mechanism in the context of scalar-vector-tensor (SVT)
theories. This screening mechanism is based on both the derivative
self-interactions of the vector field and the interactions of the scalar field
with the vector field and curvature. We calculate the field equations in a
spherically symmetric... | [
{
"created": "Fri, 8 Dec 2023 21:39:25 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Mar 2024 14:50:47 GMT",
"version": "v2"
}
] | 2024-04-02 | [
[
"Gonzalez-Espinoza",
"Manuel",
""
],
[
"Otalora",
"Giovanni",
""
],
[
"Kraiselburd",
"Lucila",
""
],
[
"Landau",
"Susana",
""
]
] | We study a screening mechanism in the context of scalar-vector-tensor (SVT) theories. This screening mechanism is based on both the derivative self-interactions of the vector field and the interactions of the scalar field with the vector field and curvature. We calculate the field equations in a spherically symmetric s... |
gr-qc/0407101 | Gian Paolo Vacca | F. Finelli, G. Marozzi, G. P. Vacca and G. Venturi | Adiabatic regularization of the graviton stress-energy tensor in de
Sitter space-time | 5 pages, revtex, final version accepted for publication in PRD | Phys.Rev.D71:023522,2005 | 10.1103/PhysRevD.71.023522 | null | gr-qc astro-ph hep-ph hep-th | null | We study the renormalized energy-momentum tensor of gravitons in a de Sitter
space-time. After canonically quantizing only the physical degrees of freedom,
we adopt the standard adiabatic subtraction used for massless minimally coupled
scalar fields as a regularization procedure and find that the energy density of
gr... | [
{
"created": "Tue, 27 Jul 2004 10:46:11 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Jul 2004 15:07:09 GMT",
"version": "v2"
},
{
"created": "Fri, 14 Jan 2005 15:08:56 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Finelli",
"F.",
""
],
[
"Marozzi",
"G.",
""
],
[
"Vacca",
"G. P.",
""
],
[
"Venturi",
"G.",
""
]
] | We study the renormalized energy-momentum tensor of gravitons in a de Sitter space-time. After canonically quantizing only the physical degrees of freedom, we adopt the standard adiabatic subtraction used for massless minimally coupled scalar fields as a regularization procedure and find that the energy density of grav... |
gr-qc/0303022 | Minkevich Albert V. | A. V. Minkevich | Problem of cosmological singularity and inflationary cosmology | 17 pages, some references were added | null | null | null | gr-qc | null | Problem of cosmological singularity of general relativity theory is
discussed. The possible resolution of this problem in the framework of
inflationary cosmology is proposed. Physical conditions leading to bouncing
inflationary solutions in the frame of general relativity theory and gauge
theories of gravitation are ... | [
{
"created": "Wed, 5 Mar 2003 21:11:53 GMT",
"version": "v1"
},
{
"created": "Wed, 21 May 2003 17:16:36 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Minkevich",
"A. V.",
""
]
] | Problem of cosmological singularity of general relativity theory is discussed. The possible resolution of this problem in the framework of inflationary cosmology is proposed. Physical conditions leading to bouncing inflationary solutions in the frame of general relativity theory and gauge theories of gravitation are co... |
2112.00271 | Bivudutta Mishra Dr. | Laxmipriya Pati, S.A. Kadam, S.K. Tripathy, B.Mishra | Rip cosmological models in extended symmetric teleparallel gravity | 14 pages, 18 figures, Accepted for publication in Physics of the Dark
Universe | Phys. of the Dark Universe, 35, 100925 (2022) | 10.1016/j.dark.2021.100925 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we have investigated some rip cosmological models in an
extended symmetric teleparallel gravity theory. We consider the form
$f(Q,T)=aQ^m+bT$ in the Einstein-Hilbert action and expressed the field
equations and the dynamical parameters in terms of the non-metricity $Q$. Three
rip models such as Little R... | [
{
"created": "Wed, 1 Dec 2021 04:43:55 GMT",
"version": "v1"
}
] | 2021-12-28 | [
[
"Pati",
"Laxmipriya",
""
],
[
"Kadam",
"S. A.",
""
],
[
"Tripathy",
"S. K.",
""
],
[
"Mishra",
"B.",
""
]
] | In this paper we have investigated some rip cosmological models in an extended symmetric teleparallel gravity theory. We consider the form $f(Q,T)=aQ^m+bT$ in the Einstein-Hilbert action and expressed the field equations and the dynamical parameters in terms of the non-metricity $Q$. Three rip models such as Little Rip... |
1402.2729 | Keisuke Izumi | Keisuke Izumi and Tetsuya Shiromizu | DGP with bubble of nothing | Version accepted by PRD (v2): 9 pages, 13 figures | Phys. Rev. D 90, 046005 (2014) | 10.1103/PhysRevD.90.046005 | KUNS-2483 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct exact solutions with the bubble of nothing in the
Dvali-Gabadadze-Porrati braneworld model. The configuration with a single brane
can be constructed, unlike in the Randall-Sundrum braneworld model. The
geometry on the single brane looks like the Einstein-Rosen bridge. We also
discuss the junction of mult... | [
{
"created": "Wed, 12 Feb 2014 04:34:51 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Sep 2014 00:59:37 GMT",
"version": "v2"
}
] | 2014-09-04 | [
[
"Izumi",
"Keisuke",
""
],
[
"Shiromizu",
"Tetsuya",
""
]
] | We construct exact solutions with the bubble of nothing in the Dvali-Gabadadze-Porrati braneworld model. The configuration with a single brane can be constructed, unlike in the Randall-Sundrum braneworld model. The geometry on the single brane looks like the Einstein-Rosen bridge. We also discuss the junction of multib... |
1310.4002 | Omid Jalili | K.Mehdizadeh, O.Jalili and M.V.Takook | Experimental structure of gravitational wave detection by bounded cold
electronic plasma in a long pipe | 8 pages, 5 figures | International Journal of Theoretical Physics, October 2010, Volume
49, Issue 10, pp 2417-2424 | null | null | gr-qc physics.plasm-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the previous paper, we introduced a new method of gravitational waves (GW)
detection. In our proposal, we replaced usual Weber's metallic bar with a cold
electronic plasma. We obtained a nonhomogenous differential equation for
tangential electric field that on it GW is known as nonhomogenous term. In this
paper we... | [
{
"created": "Tue, 15 Oct 2013 10:58:06 GMT",
"version": "v1"
}
] | 2013-10-16 | [
[
"Mehdizadeh",
"K.",
""
],
[
"Jalili",
"O.",
""
],
[
"Takook",
"M. V.",
""
]
] | In the previous paper, we introduced a new method of gravitational waves (GW) detection. In our proposal, we replaced usual Weber's metallic bar with a cold electronic plasma. We obtained a nonhomogenous differential equation for tangential electric field that on it GW is known as nonhomogenous term. In this paper we e... |
1007.1767 | Daniela Doneva | Daniela D. Doneva, Stoytcho S. Yazadjiev, Kostas D. Kokkotas, Ivan Zh.
Stefanov | Quasi-normal modes, bifurcations and non-uniqueness of charged
scalar-tensor black holes | 22 pages, 11 figures; v2: typos corrected, comments and references
added | Phys.Rev.D82:064030,2010 | 10.1103/PhysRevD.82.064030 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper we study the scalar sector of the quasinormal modes of
charged general relativistic, static and spherically symmetric black holes
coupled to nonlinear electrodynamics and embedded in a class of scalar-tensor
theories. We find that for certain domain of the parametric space there exist
unstable qu... | [
{
"created": "Sun, 11 Jul 2010 10:02:12 GMT",
"version": "v1"
},
{
"created": "Sun, 13 Feb 2011 15:27:36 GMT",
"version": "v2"
}
] | 2011-02-15 | [
[
"Doneva",
"Daniela D.",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
],
[
"Kokkotas",
"Kostas D.",
""
],
[
"Stefanov",
"Ivan Zh.",
""
]
] | In the present paper we study the scalar sector of the quasinormal modes of charged general relativistic, static and spherically symmetric black holes coupled to nonlinear electrodynamics and embedded in a class of scalar-tensor theories. We find that for certain domain of the parametric space there exist unstable quas... |
1606.04777 | Muhammad Zubair | Ifra Noureen, M. Zubair | Axially Symmetric Shear-free Fluids in $f(R,T)$ Gravity | 22 pages | null | 10.1142/S0218271817501280 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we have discussed the implications of shear-free condition on
axially symmetric anisotropic gravitating objects in $f(R,T)$ theory.
Restricted axial symmetry ignoring rotation and reflection enteries is taken
into account for establishment of instability range. Implementation of linear
perturbation on co... | [
{
"created": "Tue, 14 Jun 2016 08:53:43 GMT",
"version": "v1"
}
] | 2017-10-04 | [
[
"Noureen",
"Ifra",
""
],
[
"Zubair",
"M.",
""
]
] | In this work we have discussed the implications of shear-free condition on axially symmetric anisotropic gravitating objects in $f(R,T)$ theory. Restricted axial symmetry ignoring rotation and reflection enteries is taken into account for establishment of instability range. Implementation of linear perturbation on cons... |
2105.02214 | Pankaj Sheoran | Farruh Atamurotov, Sanjar Shaymatov, Pankaj Sheoran, Sanjay Siwach | Charged black hole in $4D$ Einstein-Gauss-Bonnet gravity: Particle
motion, plasma effect on weak gravitational lensing and centre-of-mass energy | 39 pages, 10 captioned figures. Accepted for publication in JCAP.
Updated to match the accepted version | null | 10.1088/1475-7516/2021/08/045 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the motion of charged and spinning particles and photons in the $4D$
charged Einstein-Gauss-Bonnet (EGB) black hole vicinity. We determine the
radius of the innermost stable circular orbit (ISCO) for test particles. We
show that the combined effect of the Gauss-Bonnet (GB) coupling parameter and
black hole c... | [
{
"created": "Wed, 5 May 2021 17:46:15 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Aug 2021 04:05:13 GMT",
"version": "v2"
}
] | 2021-09-01 | [
[
"Atamurotov",
"Farruh",
""
],
[
"Shaymatov",
"Sanjar",
""
],
[
"Sheoran",
"Pankaj",
""
],
[
"Siwach",
"Sanjay",
""
]
] | We study the motion of charged and spinning particles and photons in the $4D$ charged Einstein-Gauss-Bonnet (EGB) black hole vicinity. We determine the radius of the innermost stable circular orbit (ISCO) for test particles. We show that the combined effect of the Gauss-Bonnet (GB) coupling parameter and black hole cha... |
1506.03870 | Vladimir S. Manko | V. S. Manko and H. Garc\'ia-Compe\'an | Smarr formula for black holes endowed with both electric and magnetic
charges | 11 pages, 3 figures; references added, title changed; published
version | Class. Quantum Grav. 35 (2018) 064001 | 10.1088/1361-6382/aaa907 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present paper clarifies how to consistently take into account the
contribution of magnetic charges in the generalized Smarr mass formula by using
properly the Tomimatsu's representation of Komar integrals. It is shown in
particular that in all three examples of the dyonic solutions considered by us,
the sum of th... | [
{
"created": "Thu, 11 Jun 2015 23:35:30 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Mar 2019 05:53:27 GMT",
"version": "v2"
}
] | 2019-04-10 | [
[
"Manko",
"V. S.",
""
],
[
"García-Compeán",
"H.",
""
]
] | The present paper clarifies how to consistently take into account the contribution of magnetic charges in the generalized Smarr mass formula by using properly the Tomimatsu's representation of Komar integrals. It is shown in particular that in all three examples of the dyonic solutions considered by us, the sum of the ... |
gr-qc/0408022 | Matt Visser | Carlos Barcelo, Stefano Liberati, Sebastiano Sonego, and Matt Visser | Causal structure of acoustic spacetimes | 51 pages, 39 figures (23 colour figures, colour used to convey
physics information.) V2: Two references added, some additional discussion of
maximal analytic extension, plus minor cosmetic changes | New J.Phys. 6 (2004) 186 | 10.1088/1367-2630/6/1/186 | null | gr-qc | null | The so-called ``analogue models of general relativity'' provide a number of
specific physical systems, well outside the traditional realm of general
relativity, that nevertheless are well-described by the differential geometry
of curved spacetime. Specifically, the propagation of acoustic disturbances in
moving fluid... | [
{
"created": "Mon, 9 Aug 2004 13:46:46 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Sep 2004 12:38:33 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Barcelo",
"Carlos",
""
],
[
"Liberati",
"Stefano",
""
],
[
"Sonego",
"Sebastiano",
""
],
[
"Visser",
"Matt",
""
]
] | The so-called ``analogue models of general relativity'' provide a number of specific physical systems, well outside the traditional realm of general relativity, that nevertheless are well-described by the differential geometry of curved spacetime. Specifically, the propagation of acoustic disturbances in moving fluids ... |
1708.08398 | Joao Paulo Morais Graca | J. P. Morais Gra\c{c}a, Iarley P. Lobo and I. G. Salako | Cloud of strings in f(R) gravity | Version accepted for CPC | Chinese Physics C vol. 42, No. 6 (2018) 063105 | 10.1088/1674-1137/42/6/063105 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the solution for a spherically symmetric string cloud configuration
in a d-dimensional spacetime in the framework of f(R) theories of gravity. We
also analyze some thermodynamic properties of the joint black hole - cloud of
strings solution. For its Hawking temperature, we found that the dependence of
the m... | [
{
"created": "Mon, 28 Aug 2017 16:11:48 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Jun 2018 17:31:21 GMT",
"version": "v2"
}
] | 2018-06-12 | [
[
"Graça",
"J. P. Morais",
""
],
[
"Lobo",
"Iarley P.",
""
],
[
"Salako",
"I. G.",
""
]
] | We derive the solution for a spherically symmetric string cloud configuration in a d-dimensional spacetime in the framework of f(R) theories of gravity. We also analyze some thermodynamic properties of the joint black hole - cloud of strings solution. For its Hawking temperature, we found that the dependence of the mas... |
gr-qc/9208008 | null | Edward Malec and Niall \'O Murchadha | Trapped surfaces and spherical closed cosmologies | 36 pages | Phys.Rev. D47 (1993) 1454-1464 | 10.1103/PhysRevD.47.1454 | null | gr-qc astro-ph | null | This article gives necessary and sufficient conditions for the formation of
trapped surfaces in spherically symmetric initial data defined on a closed
manifold. Such trapped surfaces surround a region in which there occurs an
enhancement of matter over the average. The conditions are posed directly in
terms of physic... | [
{
"created": "Wed, 19 Aug 1992 15:19:00 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Malec",
"Edward",
""
],
[
"Murchadha",
"Niall Ó",
""
]
] | This article gives necessary and sufficient conditions for the formation of trapped surfaces in spherically symmetric initial data defined on a closed manifold. Such trapped surfaces surround a region in which there occurs an enhancement of matter over the average. The conditions are posed directly in terms of physical... |
1511.00699 | Valerio Faraoni | Valerio Faraoni, Shawn D. Belknap-Keet, and Marianne Lapierre-Leonard | Paczynski-Wiita-like potential for any static spherical black hole in
metric theories of gravity | Added a subsection on epicyclic frequency and a few references.
Matches version accepted in Phys. Rev. D | Phys. Rev. D 93, 044042 (2016) | 10.1103/PhysRevD.93.044042 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The pseudo-Newtonian potential of Paczynski and Wiita for particles orbiting
a Schwarzschild black hole is generalized to arbitrary static and spherically
symmetric spacetimes, including black hole solutions of alternative theories of
gravity. In addition to being more general, our prescription differs
substantially ... | [
{
"created": "Mon, 2 Nov 2015 21:00:56 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Feb 2016 17:20:42 GMT",
"version": "v2"
}
] | 2016-02-24 | [
[
"Faraoni",
"Valerio",
""
],
[
"Belknap-Keet",
"Shawn D.",
""
],
[
"Lapierre-Leonard",
"Marianne",
""
]
] | The pseudo-Newtonian potential of Paczynski and Wiita for particles orbiting a Schwarzschild black hole is generalized to arbitrary static and spherically symmetric spacetimes, including black hole solutions of alternative theories of gravity. In addition to being more general, our prescription differs substantially fr... |
gr-qc/0412016 | W{\l}odzimierz Natorf | W{\l}odzimierz Natorf | Kerr--Schild metrics and gravitational radiation | AMSLaTeX, 12 pages, submitted to Gen. Rel. Grav., references added,
changed content | Gen.Rel.Grav. 37 (2005) 1719-1729 | 10.1007/s10714-005-0154-4 | null | gr-qc | null | We describe conditions assuring that the Kerr--Schild type solutions of
Einstein equations with pure radiation fields are asymptotically flat at future
null infinity. Such metrics cannot describe ``true'' gravitational radiation
from bounded sources--it is shown that the Bondi news function vanishes
identically. We o... | [
{
"created": "Fri, 3 Dec 2004 12:21:45 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Feb 2005 12:27:25 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Natorf",
"Włodzimierz",
""
]
] | We describe conditions assuring that the Kerr--Schild type solutions of Einstein equations with pure radiation fields are asymptotically flat at future null infinity. Such metrics cannot describe ``true'' gravitational radiation from bounded sources--it is shown that the Bondi news function vanishes identically. We obt... |
gr-qc/9512030 | null | K. S. Virbhadra, S. Jhingan and P. S. Joshi (Tata Institute of
Fundamental Research, India) | Nature of singularity in Einstein-massless scalar theory | 9 pages, LaTex, no figures, misprints corrected, to appear in Int. J.
Mod. Phys. D | Int.J.Mod.Phys. D6 (1997) 357-362 | 10.1142/S0218271897000200 | null | gr-qc astro-ph hep-th | null | We study the static and spherically symmetric exact solution of the
Einstein-massless scalar equations given by Janis, Newman and Winicour. We find
that this solution satisfies the weak energy condition and has strong globally
naked singularity.
| [
{
"created": "Fri, 15 Dec 1995 04:55:00 GMT",
"version": "v1"
},
{
"created": "Tue, 20 May 1997 07:22:00 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Virbhadra",
"K. S.",
"",
"Tata Institute of\n Fundamental Research, India"
],
[
"Jhingan",
"S.",
"",
"Tata Institute of\n Fundamental Research, India"
],
[
"Joshi",
"P. S.",
"",
"Tata Institute of\n Fundamental Research, India"
]
] | We study the static and spherically symmetric exact solution of the Einstein-massless scalar equations given by Janis, Newman and Winicour. We find that this solution satisfies the weak energy condition and has strong globally naked singularity. |
2103.08520 | LSC P&P Committee | The LIGO Scientific Collaboration, the Virgo Collaboration, and the
KAGRA Collaboration: R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K.
Ackley, A. Adams, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, D.
Agarwal, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A.
Ain, P. Ajith, T. Akutsu... | Search for anisotropic gravitational-wave backgrounds using data from
Advanced LIGO and Advanced Virgo's first three observing runs | 23 Pages, 9 Figures | Phys. Rev. D 104, 022005 (2021) | 10.1103/PhysRevD.104.022005 | LIGO-P2000500 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report results from searches for anisotropic stochastic gravitational-wave
backgrounds using data from the first three observing runs of the Advanced LIGO
and Advanced Virgo detectors. For the first time, we include Virgo data in our
analysis and run our search with a new efficient pipeline called {\tt PyStoch}
on... | [
{
"created": "Mon, 15 Mar 2021 16:43:43 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Mar 2021 11:37:41 GMT",
"version": "v2"
},
{
"created": "Mon, 16 Aug 2021 22:22:42 GMT",
"version": "v3"
},
{
"created": "Wed, 2 Feb 2022 07:45:59 GMT",
"version": "v4"
}
] | 2022-02-03 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"the KAGRA Collaboration",
"",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Abraham",
"S.",
""
],
[
"Acernese",... | We report results from searches for anisotropic stochastic gravitational-wave backgrounds using data from the first three observing runs of the Advanced LIGO and Advanced Virgo detectors. For the first time, we include Virgo data in our analysis and run our search with a new efficient pipeline called {\tt PyStoch} on d... |
gr-qc/0212081 | A. Heidmann | Jean-Michel Courty, A. Heidmann, M. Pinard | Quantum locking of mirrors in interferometers | 4 pages, 2 figures, RevTeX | Phys.Rev.Lett. 90 (2003) 083601 | 10.1103/PhysRevLett.90.083601 | null | gr-qc quant-ph | null | We show that quantum noise in very sensitive interferometric measurements
such as gravitational-waves detectors can be drastically modified by quantum
feedback. We present a new scheme based on active control to lock the motion of
a mirror to a reference mirror at the quantum level. This simple technique
allows to re... | [
{
"created": "Thu, 19 Dec 2002 16:42:27 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Feb 2003 15:20:03 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Courty",
"Jean-Michel",
""
],
[
"Heidmann",
"A.",
""
],
[
"Pinard",
"M.",
""
]
] | We show that quantum noise in very sensitive interferometric measurements such as gravitational-waves detectors can be drastically modified by quantum feedback. We present a new scheme based on active control to lock the motion of a mirror to a reference mirror at the quantum level. This simple technique allows to redu... |
1107.2978 | Jozef Skakala | Jozef Skakala (Victoria University of Wellington) | Aspects of General Relativity: Pseudo-Finsler extensions, Quasi-normal
frequencies and Multiplication of tensorial distributions | PhD thesis, 207 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This thesis is based on three different projects, all of them are directly
linked to the classical general theory of relativity, but they might have
consequences for quantum gravity as well. The first chapter deals with
pseudo-Finsler geometric extensions of the classical theory, these being ways
of naturally represe... | [
{
"created": "Fri, 15 Jul 2011 01:18:56 GMT",
"version": "v1"
}
] | 2011-07-18 | [
[
"Skakala",
"Jozef",
"",
"Victoria University of Wellington"
]
] | This thesis is based on three different projects, all of them are directly linked to the classical general theory of relativity, but they might have consequences for quantum gravity as well. The first chapter deals with pseudo-Finsler geometric extensions of the classical theory, these being ways of naturally represent... |
1001.4590 | William Stoeger | George F. R. Ellis and William R. Stoeger | A Note on Infinities in Eternal Inflation | 13 pages and 6 figures | Gen.Rel.Grav.41:1475-1484,2009 | 10.1007/s10714-008-0715-4 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In some well-known scenarios of open-universe eternal inflation, developed by
Vilenkin and co-workers, a large number of universes nucleate and thermalize
within the eternally inflating mega-universe. According to the proposal, each
universe nucleates at a point, and therefore the boundary of the nucleated
universe i... | [
{
"created": "Tue, 26 Jan 2010 03:53:19 GMT",
"version": "v1"
}
] | 2010-02-05 | [
[
"Ellis",
"George F. R.",
""
],
[
"Stoeger",
"William R.",
""
]
] | In some well-known scenarios of open-universe eternal inflation, developed by Vilenkin and co-workers, a large number of universes nucleate and thermalize within the eternally inflating mega-universe. According to the proposal, each universe nucleates at a point, and therefore the boundary of the nucleated universe is ... |
1605.04361 | Tatsu Takeuchi | Lay Nam Chang, Djordje Minic, Chen Sun, Tatsu Takeuchi | Observable Effects of Quantum Gravity | 7 pages, uses ws-ijmpd.cls and ws-ijmpd.bst; Received honorable
mention in the Gravity Research Foundation 2016 Awards for Essays on
Gravitation | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the generic phenomenology of quantum gravity and, in particular,
argue that the observable effects of quantum gravity, associated with new,
extended, non-local, non-particle-like quanta, and accompanied by a dynamical
energy-momentum space, are not necessarily Planckian and that they could be
observed at m... | [
{
"created": "Sat, 14 May 2016 01:26:45 GMT",
"version": "v1"
}
] | 2016-05-17 | [
[
"Chang",
"Lay Nam",
""
],
[
"Minic",
"Djordje",
""
],
[
"Sun",
"Chen",
""
],
[
"Takeuchi",
"Tatsu",
""
]
] | We discuss the generic phenomenology of quantum gravity and, in particular, argue that the observable effects of quantum gravity, associated with new, extended, non-local, non-particle-like quanta, and accompanied by a dynamical energy-momentum space, are not necessarily Planckian and that they could be observed at muc... |
gr-qc/0012062 | Farhad Darabi | S. K. Moayedi, F. Darabi | Families of exact solutions of a 2D gravity model minimally coupled to
electrodynamics | 13 pages, LaTeX, to be published in JMP | J.Math.Phys. 42 (2001) 1229-1235 | 10.1063/1.1343093 | null | gr-qc | null | Three families of exact solutions for 2-dimensional gravity minimally coupled
to electrodynamics are obtained in the context of ${\cal R}=T$ theory. It is
shown, by supersymmetric formalism of quantum mechanics, that the quantum
dynamics of a neutral bosonic particle on static backgrounds with both varying
curvature ... | [
{
"created": "Sun, 17 Dec 2000 06:14:03 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Moayedi",
"S. K.",
""
],
[
"Darabi",
"F.",
""
]
] | Three families of exact solutions for 2-dimensional gravity minimally coupled to electrodynamics are obtained in the context of ${\cal R}=T$ theory. It is shown, by supersymmetric formalism of quantum mechanics, that the quantum dynamics of a neutral bosonic particle on static backgrounds with both varying curvature an... |
gr-qc/0301008 | Nashed Gamal | Gamal G. L. Nashed | Stability of the Vacuum Non Singular Black Hole | null | Chaos Solitons Fractals 15 (2003) 841 | 10.1016/S0960-0779(02)00168-6 | null | gr-qc | null | The singularity of the black hole solutions obtained before in M{\o}ller's
theory are studied. It is found that although the two solutions reproduce the
same associated metric the asymptotic behavior of the scalars of torsion tensor
and basic vector are quite different. The stability of the associated metric of
those... | [
{
"created": "Sat, 4 Jan 2003 08:49:38 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Jan 2003 08:55:20 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Nashed",
"Gamal G. L.",
""
]
] | The singularity of the black hole solutions obtained before in M{\o}ller's theory are studied. It is found that although the two solutions reproduce the same associated metric the asymptotic behavior of the scalars of torsion tensor and basic vector are quite different. The stability of the associated metric of those s... |
gr-qc/9712045 | null | H. Kodama (YITP, Kyoto Univ.),T. Hamazaki (Kyoto Univ.) | Evolution of Cosmological Perturbations in the Long Wavelength Limit | 16 pages, no figure, submitted to PRD | Phys.Rev. D57 (1998) 7177-7185 | 10.1103/PhysRevD.57.7177 | YITP-97-62, KUNS 1482 | gr-qc | null | The relation between the long wavelength limit of solutions to the
cosmological perturbation equations and the perturbations of solutions to the
exactly homogeneous background equations is investigated for scalar
perturbations on spatially flat cosmological models. It is shown that a
homogeneous perturbation coincide... | [
{
"created": "Wed, 10 Dec 1997 13:04:55 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Kodama",
"H.",
"",
"YITP, Kyoto Univ."
],
[
"Hamazaki",
"T.",
"",
"Kyoto Univ."
]
] | The relation between the long wavelength limit of solutions to the cosmological perturbation equations and the perturbations of solutions to the exactly homogeneous background equations is investigated for scalar perturbations on spatially flat cosmological models. It is shown that a homogeneous perturbation coincides ... |
gr-qc/9712036 | Lars Andersson | Lars Andersson (KTH) and Mirta S. Iriondo (FaMAF) | Existence of Constant Mean Curvature Hypersurfaces in Asymptotically
Flat Spacetimes | 30 pages | null | null | null | gr-qc | null | The problem of existence of spacelike hypersurfaces with constant mean
curvature in asymptotically flat spacetimes is considered for a class of
asymptotically Schwarzschild spacetimes satisfying an interior condition. Using
a barrier construction, a proof is given of the existence of complete
hypersurfaces with const... | [
{
"created": "Mon, 8 Dec 1997 07:12:57 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Andersson",
"Lars",
"",
"KTH"
],
[
"Iriondo",
"Mirta S.",
"",
"FaMAF"
]
] | The problem of existence of spacelike hypersurfaces with constant mean curvature in asymptotically flat spacetimes is considered for a class of asymptotically Schwarzschild spacetimes satisfying an interior condition. Using a barrier construction, a proof is given of the existence of complete hypersurfaces with constan... |
1807.02769 | Abhik Kumar Sanyal Dr. | Abhik Kumar Sanyal | Degenerate Hamiltonian operator in higher-order canonical gravity -- the
problem and a remedy | 28 pages, 0 figures | null | 10.1016/j.aop.2019.167971 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Different routes towards the canonical formulation of a classical theory
result in different canonically equivalent Hamiltonians, while their quantum
counterparts are related through appropriate unitary transformation. However,
for higher-order theory of gravity, although two Hamiltonians emerging from the
same actio... | [
{
"created": "Sun, 8 Jul 2018 07:02:15 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Aug 2018 15:05:58 GMT",
"version": "v2"
},
{
"created": "Thu, 15 Aug 2019 14:57:49 GMT",
"version": "v3"
}
] | 2020-01-29 | [
[
"Sanyal",
"Abhik Kumar",
""
]
] | Different routes towards the canonical formulation of a classical theory result in different canonically equivalent Hamiltonians, while their quantum counterparts are related through appropriate unitary transformation. However, for higher-order theory of gravity, although two Hamiltonians emerging from the same action ... |
2403.17539 | Hamed Pejhan | Jean-Pierre Gazeau and Hamed Pejhan | A misleading naming convention: de Sitter `tachyonic' scalar fields | 5 pages, no figure | null | null | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | We revisit the concept of `tachyonic' scalar fields, characterized by a real
negative squared `mass', in de Sitter (dS) spacetime. Through a rigorous
group-theoretical analysis, we argue that labeling these fields as `tachyonic'
lacks physical relevance, often leading to misinterpretations in scholarly
discourse, as ... | [
{
"created": "Tue, 26 Mar 2024 09:43:08 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Jun 2024 06:51:10 GMT",
"version": "v2"
}
] | 2024-06-10 | [
[
"Gazeau",
"Jean-Pierre",
""
],
[
"Pejhan",
"Hamed",
""
]
] | We revisit the concept of `tachyonic' scalar fields, characterized by a real negative squared `mass', in de Sitter (dS) spacetime. Through a rigorous group-theoretical analysis, we argue that labeling these fields as `tachyonic' lacks physical relevance, often leading to misinterpretations in scholarly discourse, as th... |
2210.02164 | Kenta Hioki | Kenta Hioki and Umpei Miyamoto | Determining parameters of a spherical black hole with a thin accretion
disk by observing its shadow | 28 pages, 11 figures, title modified, sec 6 added, accepted for
publication in Physical Review D | null | 10.1103/PhysRevD.107.044042 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the classic system of a spherically symmetric black hole in
general relativity (i.e., a Schwarzschild black hole) surrounded by a
geometrically thin accretion disk. Our purpose is to examine whether one can
determine three parameters of this system (i.e., black hole mass $M$, distance
between the black hol... | [
{
"created": "Wed, 5 Oct 2022 11:47:14 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Feb 2023 11:58:42 GMT",
"version": "v2"
}
] | 2023-03-08 | [
[
"Hioki",
"Kenta",
""
],
[
"Miyamoto",
"Umpei",
""
]
] | We revisit the classic system of a spherically symmetric black hole in general relativity (i.e., a Schwarzschild black hole) surrounded by a geometrically thin accretion disk. Our purpose is to examine whether one can determine three parameters of this system (i.e., black hole mass $M$, distance between the black hole ... |
1401.7926 | Franco Albareti | F. D. Albareti, J. A. R. Cembranos, A. de la Cruz-Dombriz and A.
Dobado | The Raychaudhuri equation in homogeneous cosmologies | 13 pages, 12 figures. Minor changes. Version published in JCAP | JCAP 1403 (2014) 012 | 10.1088/1475-7516/2014/03/012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we address the issue of studying the conditions required to
guarantee the Focusing Theorem for both null and timelike geodesic congruences
by using the Raychaudhuri equation. In particular we study the case of
Friedmann-Robertson-Walker as well as more general Bianchi Type I spacetimes.
The fulfillment o... | [
{
"created": "Thu, 30 Jan 2014 17:16:39 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Mar 2014 10:36:04 GMT",
"version": "v2"
}
] | 2014-03-18 | [
[
"Albareti",
"F. D.",
""
],
[
"Cembranos",
"J. A. R.",
""
],
[
"de la Cruz-Dombriz",
"A.",
""
],
[
"Dobado",
"A.",
""
]
] | In this work we address the issue of studying the conditions required to guarantee the Focusing Theorem for both null and timelike geodesic congruences by using the Raychaudhuri equation. In particular we study the case of Friedmann-Robertson-Walker as well as more general Bianchi Type I spacetimes. The fulfillment of ... |
2306.17718 | Rafael Robson Lino dos Santos | Astrid Eichhorn, Rafael R. Lino dos Santos, Jo\~ao Lucas Miqueleto | From quantum gravity to gravitational waves through cosmic strings | 14 pages + Appendixes. It matches the published version | Phys.Rev.D 109 (2024) 2, 026013 | 10.1103/PhysRevD.109.026013 | MS-TP-23-27 | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | New physics beyond the Standard Model can give rise to stochastic
gravitational-wave backgrounds, for example through cosmic strings. In this
way, gravitational-wave searches with pulsar-timing arrays as well as existing
and future laser interferometers may provide information on particle physics
beyond the Standard ... | [
{
"created": "Fri, 30 Jun 2023 15:02:29 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Jan 2024 17:53:58 GMT",
"version": "v2"
}
] | 2024-02-01 | [
[
"Eichhorn",
"Astrid",
""
],
[
"Santos",
"Rafael R. Lino dos",
""
],
[
"Miqueleto",
"João Lucas",
""
]
] | New physics beyond the Standard Model can give rise to stochastic gravitational-wave backgrounds, for example through cosmic strings. In this way, gravitational-wave searches with pulsar-timing arrays as well as existing and future laser interferometers may provide information on particle physics beyond the Standard Mo... |
2401.00339 | Roberto Chan | R. Chan, M.F.A. da Silva and V.H. Satheeshkumar | Cylindrical Gravitational Waves in Einstein-Aether Theory | 26 pages, 10 figures. We have corrected the initial conditions for
$H(r,t)$ in order to have $\Psi(r,t)$ not equal to $H(r,t)$ | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Along the lines of the Einstein-Rosen wave equation of General Relativity
(GR), we derive a gravitational wave equation with cylindrical symmetry in the
Einstein-aether (EA) theory. We show that the gravitational wave in the EA is
periodic in time for both the metric functions $\Psi(r,t)$ and $H(r,t)$.
However, in GR... | [
{
"created": "Sat, 30 Dec 2023 22:22:25 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Feb 2024 07:58:20 GMT",
"version": "v2"
}
] | 2024-02-27 | [
[
"Chan",
"R.",
""
],
[
"da Silva",
"M. F. A.",
""
],
[
"Satheeshkumar",
"V. H.",
""
]
] | Along the lines of the Einstein-Rosen wave equation of General Relativity (GR), we derive a gravitational wave equation with cylindrical symmetry in the Einstein-aether (EA) theory. We show that the gravitational wave in the EA is periodic in time for both the metric functions $\Psi(r,t)$ and $H(r,t)$. However, in GR, ... |
gr-qc/0612144 | Karim Noui | Karim Noui | Three Dimensional Loop Quantum Gravity: Particles and the Quantum Double | 36 pages, published in Jour. Math. Physics | J.Math.Phys.47:102501,2006 | 10.1063/1.2352860 | null | gr-qc | null | It is well known that the quantum double structure plays an important role in
three dimensional quantum gravity coupled to matter field. In this paper, we
show how this algebraic structure emerges in the context of three dimensional
Riemannian loop quantum gravity (LQG) coupled to a finite number of massive
spinless ... | [
{
"created": "Fri, 22 Dec 2006 13:35:46 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Noui",
"Karim",
""
]
] | It is well known that the quantum double structure plays an important role in three dimensional quantum gravity coupled to matter field. In this paper, we show how this algebraic structure emerges in the context of three dimensional Riemannian loop quantum gravity (LQG) coupled to a finite number of massive spinless po... |
2211.09673 | Dr. Sudhaker Upadhyay | Dharm Veer Singh, Aradhya Shukla and Sudhaker Upadhyay | Quasinormal modes, shadow and thermodynamics of black holes coupled with
nonlinear electrodynamics and cloud of strings | 12 pages, 11 captioned figures, published in Annals of Physics | Annals of Physics 447 (2022) 169157 | 10.1016/j.aop.2022.169157 | null | gr-qc hep-th | http://creativecommons.org/licenses/by-sa/4.0/ | We construct an exact black hole solution for the Einstein gravity coupled
with the nonlinear electrodynamics (which corresponds to the Maxwell
electrodynamics in the weak field limit) in the presence of a cloud of strings
as the source. We study the thermodynamical properties of the black hole
solutions and derive t... | [
{
"created": "Tue, 15 Nov 2022 03:27:31 GMT",
"version": "v1"
}
] | 2022-11-18 | [
[
"Singh",
"Dharm Veer",
""
],
[
"Shukla",
"Aradhya",
""
],
[
"Upadhyay",
"Sudhaker",
""
]
] | We construct an exact black hole solution for the Einstein gravity coupled with the nonlinear electrodynamics (which corresponds to the Maxwell electrodynamics in the weak field limit) in the presence of a cloud of strings as the source. We study the thermodynamical properties of the black hole solutions and derive the... |
gr-qc/0602018 | Stefan Ulrych | S. Ulrych | Gravitoelectromagnetism in a complex Clifford algebra | 10 pages Latex2e | Phys.Lett.B633:631-635 (2006) | 10.1016/j.physletb.2005.12.050 | null | gr-qc | null | A linear vector model of gravitation is introduced in the context of quantum
physics as a generalization of electromagnetism. The gravitoelectromagnetic
gauge symmetry corresponds to a hyperbolic unitary extension of the usual
complex phase symmetry of electromagnetism. The reversed sign for the
gravitational couplin... | [
{
"created": "Sun, 5 Feb 2006 11:44:29 GMT",
"version": "v1"
}
] | 2014-07-01 | [
[
"Ulrych",
"S.",
""
]
] | A linear vector model of gravitation is introduced in the context of quantum physics as a generalization of electromagnetism. The gravitoelectromagnetic gauge symmetry corresponds to a hyperbolic unitary extension of the usual complex phase symmetry of electromagnetism. The reversed sign for the gravitational coupling ... |
1308.0988 | Hannu Nyrhinen | Kari Enqvist, Tomi Koivisto and Hannu J. Nyrhinen | Binary systems in Palatini-f(R) gravity | 11 pages | Phys. Rev. D 88, 104008 (2013) | 10.1103/PhysRevD.88.104008 | HIP-2013-10/TH | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider compact binary systems in f(R) gravity theories in the Palatini
approach and calculate the post-Newtonian parameters to the 1.5PN order using
the method of Direct Integration of the Relaxed Einstein equations (DIRE). The
Palatini-type modifications of gravity can be formulated as Einsteins gravity
with mo... | [
{
"created": "Mon, 5 Aug 2013 14:10:44 GMT",
"version": "v1"
}
] | 2013-11-20 | [
[
"Enqvist",
"Kari",
""
],
[
"Koivisto",
"Tomi",
""
],
[
"Nyrhinen",
"Hannu J.",
""
]
] | We consider compact binary systems in f(R) gravity theories in the Palatini approach and calculate the post-Newtonian parameters to the 1.5PN order using the method of Direct Integration of the Relaxed Einstein equations (DIRE). The Palatini-type modifications of gravity can be formulated as Einsteins gravity with modi... |
0710.2709 | Masato Nozawa | Masato Nozawa, Hideki Maeda | Dynamical black holes with symmetry in Einstein-Gauss-Bonnet gravity | 13 pages, 1 figure, 5 tables; references added, typos corrected,
accepted version in CQG | Class.Quant.Grav.25:055009,2008 | 10.1088/0264-9381/25/5/055009 | CECS-PHY-07/19 | gr-qc hep-th | null | We explore various aspects of dynamical black holes defined by a future outer
trapping horizon in $n(\ge 5)$-dimensional Einstein-Gauss-Bonnet gravity. In
the present paper, we assume that the spacetime has symmetries corresponding to
the isometries of an $(n-2)$-dimensional maximally symmetric space and the
Gauss-Bo... | [
{
"created": "Mon, 15 Oct 2007 04:10:07 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Oct 2007 03:43:34 GMT",
"version": "v2"
},
{
"created": "Mon, 18 Feb 2008 22:45:45 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Nozawa",
"Masato",
""
],
[
"Maeda",
"Hideki",
""
]
] | We explore various aspects of dynamical black holes defined by a future outer trapping horizon in $n(\ge 5)$-dimensional Einstein-Gauss-Bonnet gravity. In the present paper, we assume that the spacetime has symmetries corresponding to the isometries of an $(n-2)$-dimensional maximally symmetric space and the Gauss-Bonn... |
1812.00616 | Marek Szydlowski | Marek Szydlowski, Aleksander Stachowski, Krzysztof Urbanowski | The evolution of the FRW universe with decaying metastable dark energy
--- a dynamical system analysis | 38 pages, 14 figures; v3: accepted for publication in JCAP | null | 10.1088/1475-7516/2020/04/029 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate a cosmological model in which dark energy identified with the
vacuum energy which is running and decaying. In this model vacuum is metastable
and decays into a bare (true) vacuum. This decaying process has a quantum
nature and is described by tools of the quantum decay theory of unstable
systems. We ha... | [
{
"created": "Mon, 3 Dec 2018 09:20:32 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Aug 2019 13:59:12 GMT",
"version": "v2"
},
{
"created": "Tue, 17 Mar 2020 16:19:26 GMT",
"version": "v3"
}
] | 2020-04-29 | [
[
"Szydlowski",
"Marek",
""
],
[
"Stachowski",
"Aleksander",
""
],
[
"Urbanowski",
"Krzysztof",
""
]
] | We investigate a cosmological model in which dark energy identified with the vacuum energy which is running and decaying. In this model vacuum is metastable and decays into a bare (true) vacuum. This decaying process has a quantum nature and is described by tools of the quantum decay theory of unstable systems. We have... |
1908.05109 | Bijan Saha Dr. | Bijan Saha | Non-minimally coupled nonlinear spinor field in FRW cosmology | 9 pages, 6 figures | null | 10.1007/s10509-020-03780-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within the scope of a FRW cosmological model we have studied the role of
spinor field in the evolution of the Universe when it is non-minimally coupled
to the gravitational one. We have considered a few types of nonlinearity. It
was found that if the spinor field nonlinearity describes an ordinary matter
such as radi... | [
{
"created": "Wed, 14 Aug 2019 13:08:18 GMT",
"version": "v1"
}
] | 2020-04-22 | [
[
"Saha",
"Bijan",
""
]
] | Within the scope of a FRW cosmological model we have studied the role of spinor field in the evolution of the Universe when it is non-minimally coupled to the gravitational one. We have considered a few types of nonlinearity. It was found that if the spinor field nonlinearity describes an ordinary matter such as radiat... |
gr-qc/9907041 | Dmitri Vassilevich | W. Kummer and D.V. Vassilevich | Hawking radiation from dilaton gravity in 1 + 1 dimensions: a
pedagogical review | latex2e, to appear in Annalen der Physik | Annalen Phys. 8 (1999) 801-827 | 10.1002/(SICI)1521-3889(199912)8:10<801::AID-ANDP801>3.0.CO;2-O | null | gr-qc hep-th | null | Hawking radiation in d=4 is regarded as a well understood quantum theoretical
feature of Black Holes or of other geometric backgrounds with an event horizon.
On the other hand, the dilaton theory emerging after spherical reduction and
generalized dilaton theories only during the last years became the subject of
numer... | [
{
"created": "Fri, 9 Jul 1999 14:35:00 GMT",
"version": "v1"
}
] | 2017-10-04 | [
[
"Kummer",
"W.",
""
],
[
"Vassilevich",
"D. V.",
""
]
] | Hawking radiation in d=4 is regarded as a well understood quantum theoretical feature of Black Holes or of other geometric backgrounds with an event horizon. On the other hand, the dilaton theory emerging after spherical reduction and generalized dilaton theories only during the last years became the subject of numerou... |
1006.5251 | Yi Xie | Xin Wu, Tian-Yi Huang and Hong Zhang | Lyapunov indices with two nearby trajectories in a curved spacetime | 12 pages, 5 figures | Phys.Rev.D74:083001,2006 | 10.1103/PhysRevD.74.083001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compare three methods for computing invariant Lyapunov exponents (LEs) in
general relativity. They involve the geodesic deviation vector technique (M1),
the two-nearby-orbits method with projection operations and with coordinate
time as an independent variable (M2), and the two-nearby-orbits method without
project... | [
{
"created": "Mon, 28 Jun 2010 01:23:44 GMT",
"version": "v1"
}
] | 2010-11-26 | [
[
"Wu",
"Xin",
""
],
[
"Huang",
"Tian-Yi",
""
],
[
"Zhang",
"Hong",
""
]
] | We compare three methods for computing invariant Lyapunov exponents (LEs) in general relativity. They involve the geodesic deviation vector technique (M1), the two-nearby-orbits method with projection operations and with coordinate time as an independent variable (M2), and the two-nearby-orbits method without projectio... |
2307.08864 | Samuel Shuman | Samuel Shuman | Path Sums for Propagators in Causal Sets | 9 pages, 6 figures | null | 10.1103/PhysRevD.109.046008 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | A major challenge in Causal Set research is that theories need only to match
general relativity and quantum field theory in the appropriate limits. This
means that there should be many different ways to calculate a scalar field
propagator in a causal set that match the known limits, but may give
significantly differe... | [
{
"created": "Mon, 17 Jul 2023 21:42:07 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Aug 2023 01:57:13 GMT",
"version": "v2"
}
] | 2024-05-20 | [
[
"Shuman",
"Samuel",
""
]
] | A major challenge in Causal Set research is that theories need only to match general relativity and quantum field theory in the appropriate limits. This means that there should be many different ways to calculate a scalar field propagator in a causal set that match the known limits, but may give significantly different... |
2002.01606 | Yu-Kuang Chu | Yu-Kuang Chu, Guo-Chin Liu, Kin-Wang Ng | Spherical harmonic analysis of anisotropies in polarized stochastic
gravitational wave background with interferometry experiments | null | Phys. Rev. D 103, 063528 (2021) | 10.1103/PhysRevD.103.063528 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the interferometric observation of intensity and polarization
anisotropies of a stochastic gravitational wave background (SGWB). We show that
the observed correlated data is defined in the group manifold of the
three-dimensional rotation. Explicit correlation between two detectors in the
interferometry exper... | [
{
"created": "Wed, 5 Feb 2020 02:20:45 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Nov 2020 08:38:03 GMT",
"version": "v2"
},
{
"created": "Sun, 28 Feb 2021 07:25:18 GMT",
"version": "v3"
}
] | 2021-03-25 | [
[
"Chu",
"Yu-Kuang",
""
],
[
"Liu",
"Guo-Chin",
""
],
[
"Ng",
"Kin-Wang",
""
]
] | We study the interferometric observation of intensity and polarization anisotropies of a stochastic gravitational wave background (SGWB). We show that the observed correlated data is defined in the group manifold of the three-dimensional rotation. Explicit correlation between two detectors in the interferometry experim... |
1206.1997 | Mohammad Vahid Takook | M. V. Takook, A. Azizi and E. Babaian | Covariant Quantization of "Massive" Spin-3/2 Fields in the de Sitter
Space | 24 pages, accepted for publication in Eur. Phys. J. C | Eur. Phys. J. C 72(2012)2026 | 10.1140/epjc/s10052-012-2026-x | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a covariant quantization of the free "massive" spin-3/2 fields in
four-dimensional de Sitter space-time based on analyticity in the complexified
pseudo-Riemannian manifold. The field equation is obtained as an eigenvalue
equation of the Casimir operator of the de Sitter group. The solutions are
calculated ... | [
{
"created": "Sun, 10 Jun 2012 06:37:44 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Takook",
"M. V.",
""
],
[
"Azizi",
"A.",
""
],
[
"Babaian",
"E.",
""
]
] | We present a covariant quantization of the free "massive" spin-3/2 fields in four-dimensional de Sitter space-time based on analyticity in the complexified pseudo-Riemannian manifold. The field equation is obtained as an eigenvalue equation of the Casimir operator of the de Sitter group. The solutions are calculated in... |
0710.5034 | Carlo Rovelli | Elena Magliaro, Claudio Perini, Carlo Rovelli | Numerical indications on the semiclassical limit of the flipped vertex | 4 pages, 8 figures | Class.Quant.Grav.25:095009,2008 | 10.1088/0264-9381/25/9/095009 | null | gr-qc | null | We introduce a technique for testing the semiclassical limit of a quantum
gravity vertex amplitude. The technique is based on the propagation of a
semiclassical wave packet. We apply this technique to the newly introduced
"flipped" vertex in loop quantum gravity, in order to test the intertwiner
dependence of the ver... | [
{
"created": "Fri, 26 Oct 2007 09:17:03 GMT",
"version": "v1"
},
{
"created": "Sat, 27 Oct 2007 06:28:46 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Magliaro",
"Elena",
""
],
[
"Perini",
"Claudio",
""
],
[
"Rovelli",
"Carlo",
""
]
] | We introduce a technique for testing the semiclassical limit of a quantum gravity vertex amplitude. The technique is based on the propagation of a semiclassical wave packet. We apply this technique to the newly introduced "flipped" vertex in loop quantum gravity, in order to test the intertwiner dependence of the verte... |
gr-qc/0703151 | Jose Socorro Garcia | M. Aguero, J. A. Aguilar S., C. Ortiz, M. Sabido and J. Socorro | Non Commutative Bianchi type II Quantum Cosmology | 8 pages, revtex4 | Int.J.Theor.Phys.46:2928-2934,2007 | 10.1007/s10773-007-9405-3 | null | gr-qc | null | In this paper we present the noncommutative Bianchi Class A cosmological
models coupled to barotropic perfect fluid. The commutative and noncommutative
quantum solution to the Wheeler-DeWitt equation for any factor ordering, to the
anisotropic Bianchi type II cosmological model are found, using a stiff fluid
($\gamma... | [
{
"created": "Thu, 29 Mar 2007 22:10:21 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Aguero",
"M.",
""
],
[
"S.",
"J. A. Aguilar",
""
],
[
"Ortiz",
"C.",
""
],
[
"Sabido",
"M.",
""
],
[
"Socorro",
"J.",
""
]
] | In this paper we present the noncommutative Bianchi Class A cosmological models coupled to barotropic perfect fluid. The commutative and noncommutative quantum solution to the Wheeler-DeWitt equation for any factor ordering, to the anisotropic Bianchi type II cosmological model are found, using a stiff fluid ($\gamma=1... |
1206.2192 | Emilio Elizalde | Artyom V. Astashenok, Emilio Elizalde, Sergei D. Odintsov, Artyom V.
Yurov | Equation-of-state formalism for dark energy models on the brane and the
future of brane universes | 13 pages, more extense discussion, references added | null | 10.1140/epjc/s10052-012-2260-2 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Brane dark energy cosmologies, leading to various possible evolutions of our
universe, are investigated. The discussion shows that while all these models
can be made arbitrarily close to the standard $\Lambda$CDM cosmology at
present, their future evolutions can be very different, even diverge with time
in a number o... | [
{
"created": "Mon, 11 Jun 2012 13:15:05 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Dec 2012 16:22:57 GMT",
"version": "v2"
}
] | 2015-06-05 | [
[
"Astashenok",
"Artyom V.",
""
],
[
"Elizalde",
"Emilio",
""
],
[
"Odintsov",
"Sergei D.",
""
],
[
"Yurov",
"Artyom V.",
""
]
] | Brane dark energy cosmologies, leading to various possible evolutions of our universe, are investigated. The discussion shows that while all these models can be made arbitrarily close to the standard $\Lambda$CDM cosmology at present, their future evolutions can be very different, even diverge with time in a number of ... |
gr-qc/0106082 | A | Mustafa Ozcan | Green's function for a n-dimensional closed, static universe and with a
spherical boundary | 20 pages, 2 tables | null | null | null | gr-qc | null | We construct the Hadamard Green's function by using the eigenfunction, which
are obtained by solving the wave equation for the massless conformal scalar
field on the S^n-1 of a n-dimensional closed, static universe. We also consider
the half space case with both the Dirichlet and the Neumann boundary
conditions. Solv... | [
{
"created": "Tue, 26 Jun 2001 12:45:28 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"Ozcan",
"Mustafa",
""
]
] | We construct the Hadamard Green's function by using the eigenfunction, which are obtained by solving the wave equation for the massless conformal scalar field on the S^n-1 of a n-dimensional closed, static universe. We also consider the half space case with both the Dirichlet and the Neumann boundary conditions. Solvin... |
1006.5418 | Piero Nicolini | Remo Garattini and Piero Nicolini | A noncommutative approach to the cosmological constant problem | 9 pages, 1 figure, version matching that published on PRD | Phys.Rev.D83:064021,2011 | 10.1103/PhysRevD.83.064021 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the cosmological constant emerging from the
Wheeler-DeWitt equation as an eigenvalue of the related Sturm-Liouville
problem. We employ Gaussian trial functionals and we perform a mode
decomposition to extract the transverse-traceless component, namely, the
graviton contribution, at one loop. We... | [
{
"created": "Mon, 28 Jun 2010 17:41:41 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Mar 2011 17:43:43 GMT",
"version": "v2"
}
] | 2011-03-22 | [
[
"Garattini",
"Remo",
""
],
[
"Nicolini",
"Piero",
""
]
] | In this paper we study the cosmological constant emerging from the Wheeler-DeWitt equation as an eigenvalue of the related Sturm-Liouville problem. We employ Gaussian trial functionals and we perform a mode decomposition to extract the transverse-traceless component, namely, the graviton contribution, at one loop. We i... |
0903.5367 | Leo Brewin | Leo Brewin and Jules Kajtar | A Smooth Lattice construction of the Oppenheimer-Snyder spacetime | 60 pages, 28 figures | Phys.Rev.D80:104004,2009 | 10.1103/PhysRevD.80.104004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present test results for the smooth lattice method using an
Oppenheimer-Snyder spacetime. The results are in excellent agreement with
theory and numerical results from other authors.
| [
{
"created": "Tue, 31 Mar 2009 04:59:54 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Brewin",
"Leo",
""
],
[
"Kajtar",
"Jules",
""
]
] | We present test results for the smooth lattice method using an Oppenheimer-Snyder spacetime. The results are in excellent agreement with theory and numerical results from other authors. |
1112.3928 | Pablo Laguna | James Healy, Tanja Bode, Roland Haas, Enrique Pazos, Pablo Laguna,
Deirdre M. Shoemaker and Nicol\'as Yunes | Late Inspiral and Merger of Binary Black Holes in Scalar-Tensor Theories
of Gravity | 4 pages, 5 figures, 1 table | null | 10.1088/0264-9381/29/23/232002 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave observations will probe non-linear gravitational
interactions and thus enable strong tests of Einstein's theory of general
relativity. We present a numerical relativity study of the late inspiral and
merger of binary black holes in scalar-tensor theories of gravity. We consider
black hole binaries ... | [
{
"created": "Fri, 16 Dec 2011 19:39:41 GMT",
"version": "v1"
}
] | 2015-06-03 | [
[
"Healy",
"James",
""
],
[
"Bode",
"Tanja",
""
],
[
"Haas",
"Roland",
""
],
[
"Pazos",
"Enrique",
""
],
[
"Laguna",
"Pablo",
""
],
[
"Shoemaker",
"Deirdre M.",
""
],
[
"Yunes",
"Nicolás",
""
]
] | Gravitational wave observations will probe non-linear gravitational interactions and thus enable strong tests of Einstein's theory of general relativity. We present a numerical relativity study of the late inspiral and merger of binary black holes in scalar-tensor theories of gravity. We consider black hole binaries in... |
gr-qc/9505021 | Bronnikov Kirill Alexandrovich | K.A. Bronnikov and V.N. Melnikov | VACUUM STATIC, AXIALLY SYMMETRIC FIELDS IN D-DIMENSIONAL GRAVITY | 6 pages, Latex, 1 figure (inside the Latex file). To appear in
Gravitation and Cosmology journal | Grav.Cosmol. 1 (1995) 155-159 | null | RGS-VNIIMS-003/95 | gr-qc | null | Vacuum static, axially symmetric space-times in $D$-dimensional general
relativity with a Ricci-flat internal space are discussed. It is shown, in
particular, that some of the monopole-type solutions are free of curvature
singularities and their source can be a disk membrane bounded by a ring with a
string or branchi... | [
{
"created": "Mon, 15 May 1995 07:41:26 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Melnikov",
"V. N.",
""
]
] | Vacuum static, axially symmetric space-times in $D$-dimensional general relativity with a Ricci-flat internal space are discussed. It is shown, in particular, that some of the monopole-type solutions are free of curvature singularities and their source can be a disk membrane bounded by a ring with a string or branching... |
1508.04329 | Guilherme Sadovski | F. T. Falciano, G. Sadovski, R. F. Sobreiro and A. A. Tomaz | Cosmology from a gauge induced gravity | 22 pages, 3 figures | Gen.Rel.Grav. 49 (2017) no.9, 118 | 10.1007/s10714-017-2282-z | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The main goal of the present work is to analyze the cosmological scenario of
the induced gravity theory developed in previous works. Such a theory consists
on a Yang-Mills theory in a four-dimensional Euclidian spacetime with $SO(m,n)$
such that $m+n=5$ and $m\in\{0,1,2\}$ as its gauge group. This theory undergoes
a ... | [
{
"created": "Tue, 18 Aug 2015 14:29:34 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Aug 2017 22:28:24 GMT",
"version": "v2"
}
] | 2017-08-24 | [
[
"Falciano",
"F. T.",
""
],
[
"Sadovski",
"G.",
""
],
[
"Sobreiro",
"R. F.",
""
],
[
"Tomaz",
"A. A.",
""
]
] | The main goal of the present work is to analyze the cosmological scenario of the induced gravity theory developed in previous works. Such a theory consists on a Yang-Mills theory in a four-dimensional Euclidian spacetime with $SO(m,n)$ such that $m+n=5$ and $m\in\{0,1,2\}$ as its gauge group. This theory undergoes a dy... |
1510.08340 | Jos\'e Villanueva | J. R. Villanueva and Marco Olivares | Gravitational Rutherford scattering and Keplerian orbits for
electrically charged bodies in heterotic string theory | 11 pages, 12 figures | null | 10.1140/epjc/s10052-015-3794-x | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Properties of the motion of electrically charged particles in the background
of the Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) black hole is
presented in this paper. Radial and angular motion are studied analytically for
different values of the fundamental parameter. Therefore, gravitational
Rutherford scatt... | [
{
"created": "Wed, 28 Oct 2015 15:21:36 GMT",
"version": "v1"
}
] | 2016-01-20 | [
[
"Villanueva",
"J. R.",
""
],
[
"Olivares",
"Marco",
""
]
] | Properties of the motion of electrically charged particles in the background of the Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) black hole is presented in this paper. Radial and angular motion are studied analytically for different values of the fundamental parameter. Therefore, gravitational Rutherford scatter... |
1106.0739 | Jeffrey Yepez | Jeffrey Yepez | Highly covariant quantum lattice gas model of the Dirac equation | 5 pages, 2 figures; 66 ABW review on 01 Dec 2010: Ref. No.
RVB10.015-198, Case No. 66ABW-2010-1430 | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/publicdomain/ | We revisit the quantum lattice gas model of a spinor quantum field theory-the
smallest scale particle dynamics is partitioned into unitary collide and stream
operations. The construction is covariant (on all scales down to a small length
{\ell} and small time {\tau} = c {\ell}) with respect to Lorentz
transformations... | [
{
"created": "Fri, 3 Jun 2011 20:16:03 GMT",
"version": "v1"
}
] | 2015-03-19 | [
[
"Yepez",
"Jeffrey",
""
]
] | We revisit the quantum lattice gas model of a spinor quantum field theory-the smallest scale particle dynamics is partitioned into unitary collide and stream operations. The construction is covariant (on all scales down to a small length {\ell} and small time {\tau} = c {\ell}) with respect to Lorentz transformations. ... |
2306.05250 | Gerardo Garc\'ia-Moreno | Alberto Garc\'ia Mart\'in-Caro, Gerardo Garc\'ia-Moreno, Javier
Olmedo, Jose M. S\'anchez Vel\'azquez | Hawking radiation from an analogue bouncing geometry | 7 pages, 2 figures | Phys. Rev. D 108, L061701 (2023) | 10.1103/PhysRevD.108.L061701 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a setting that simulates Hawking radiation from an analogue
bouncing geometry, i.e., a collapsing geometry that reverts its collapse after
a finite time, in a setup consisting of a coplanar waveguide terminated in
superconducting quantum-interference devices at both ends. We demonstrate
experimental feasib... | [
{
"created": "Thu, 8 Jun 2023 14:46:17 GMT",
"version": "v1"
},
{
"created": "Thu, 2 May 2024 16:16:51 GMT",
"version": "v2"
}
] | 2024-05-03 | [
[
"Martín-Caro",
"Alberto García",
""
],
[
"García-Moreno",
"Gerardo",
""
],
[
"Olmedo",
"Javier",
""
],
[
"Velázquez",
"Jose M. Sánchez",
""
]
] | We propose a setting that simulates Hawking radiation from an analogue bouncing geometry, i.e., a collapsing geometry that reverts its collapse after a finite time, in a setup consisting of a coplanar waveguide terminated in superconducting quantum-interference devices at both ends. We demonstrate experimental feasibil... |
gr-qc/9208007 | null | Niall \'O Murchadha and Hugh Shanahan | There is no $R^3 X S^1$ vacuum gravitational instanton | 10 pages | Phys.Rev.Lett. 70 (1993) 1576-1578 | 10.1103/PhysRevLett.70.1576 | null | gr-qc hep-th | null | Gravitational instantons, solutions to the euclidean Einstein equations, with
topology $R^3 XS^1$ arise naturally in any discussion of finite temperature
quantum gravity. This Letter shows that all such instantons (irrespective of
their interior behaviour) must have the same asymptotic structure as the
Schwarzschild ... | [
{
"created": "Wed, 19 Aug 1992 11:04:00 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Murchadha",
"Niall Ó",
""
],
[
"Shanahan",
"Hugh",
""
]
] | Gravitational instantons, solutions to the euclidean Einstein equations, with topology $R^3 XS^1$ arise naturally in any discussion of finite temperature quantum gravity. This Letter shows that all such instantons (irrespective of their interior behaviour) must have the same asymptotic structure as the Schwarzschild in... |
2304.01877 | Aoyun He | Shaojie Yang, Jun Tao, Benrong Mu, Aoyun He | Lyapunov Exponents and Phase Transitions of Born-Infeld AdS Black Holes | 22 pages, 21 figures | null | 10.1088/1475-7516/2023/07/045 | CTP-SCU/2023005 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we characterize the phase transitons of Born-Infeld AdS black
holes in terms of Lyapunov exponents. We calculate the Lyapunov exponents for
both null and timelike geodesics. It is found that black hole phase transitions
can be described by multiple-valued Lyapunov exponents. And its phase diagram
can b... | [
{
"created": "Tue, 4 Apr 2023 15:31:48 GMT",
"version": "v1"
}
] | 2023-07-26 | [
[
"Yang",
"Shaojie",
""
],
[
"Tao",
"Jun",
""
],
[
"Mu",
"Benrong",
""
],
[
"He",
"Aoyun",
""
]
] | In this paper, we characterize the phase transitons of Born-Infeld AdS black holes in terms of Lyapunov exponents. We calculate the Lyapunov exponents for both null and timelike geodesics. It is found that black hole phase transitions can be described by multiple-valued Lyapunov exponents. And its phase diagram can be ... |
2005.03753 | Giovanni Otalora | Manuel Gonzalez-Espinoza, Giovanni Otalora | Generating primordial fluctuations from modified teleparallel gravity
with local Lorentz-symmetry breaking | 10 pages, 2 figures, Accepted for publication in PLB | null | 10.1016/j.physletb.2020.135696 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of modified teleparallel gravity, we study the generation of
primordial density fluctuations in a general scalar-torsion theory whose
Lagrangian density is an arbitrary function $f(T,\phi)$ of the torsion scalar
$T$ and a scalar field $\phi$, plus the kinetic term of this latter. It is well
known that ... | [
{
"created": "Thu, 7 May 2020 20:59:58 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Jun 2020 23:15:33 GMT",
"version": "v2"
},
{
"created": "Tue, 11 Aug 2020 17:09:27 GMT",
"version": "v3"
}
] | 2020-08-19 | [
[
"Gonzalez-Espinoza",
"Manuel",
""
],
[
"Otalora",
"Giovanni",
""
]
] | In the context of modified teleparallel gravity, we study the generation of primordial density fluctuations in a general scalar-torsion theory whose Lagrangian density is an arbitrary function $f(T,\phi)$ of the torsion scalar $T$ and a scalar field $\phi$, plus the kinetic term of this latter. It is well known that ge... |
gr-qc/0105006 | Sigbj{\o}rn Hervik | Sigbjorn Hervik | Discrete Symmetries in Translation Invariant Cosmological Models | 17 pages, 8 ps figures. To appear in Gen. Rel. Grav | Gen.Rel.Grav. 33 (2001) 2027-2048 | 10.1023/A:1013007211739 | null | gr-qc | null | In this paper we investigate a class of (d+1) dimensional cosmological models
with a cosmological constant possessing an R^d simply transitive symmetry group
and show that it can be written in a form that manifests the effect of a
permutation symmetry. We investigate the solution orbifold and calculate the
probabilit... | [
{
"created": "Wed, 2 May 2001 14:54:37 GMT",
"version": "v1"
},
{
"created": "Sat, 9 Jun 2001 10:16:19 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Hervik",
"Sigbjorn",
""
]
] | In this paper we investigate a class of (d+1) dimensional cosmological models with a cosmological constant possessing an R^d simply transitive symmetry group and show that it can be written in a form that manifests the effect of a permutation symmetry. We investigate the solution orbifold and calculate the probability ... |
0803.3259 | David Kubiznak | Patrick Connell, Valeri P. Frolov, David Kubiznak | Solving parallel transport equations in the higher-dimensional
Kerr-NUT-(A)dS spacetimes | 14 pages, no figures | Phys.Rev.D78:024042,2008 | 10.1103/PhysRevD.78.024042 | Alberta-Thy-04-08 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain and study the equations describing the parallel transport of
orthonormal frames along geodesics in a spacetime admitting a non-degenerate
principal conformal Killing-Yano tensor h. We demonstrate that the operator F,
obtained by a projection of h to a subspace orthogonal to the velocity, has in
a generic ca... | [
{
"created": "Sun, 23 Mar 2008 02:45:10 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Connell",
"Patrick",
""
],
[
"Frolov",
"Valeri P.",
""
],
[
"Kubiznak",
"David",
""
]
] | We obtain and study the equations describing the parallel transport of orthonormal frames along geodesics in a spacetime admitting a non-degenerate principal conformal Killing-Yano tensor h. We demonstrate that the operator F, obtained by a projection of h to a subspace orthogonal to the velocity, has in a generic case... |
gr-qc/0606050 | Davide Batic | D. Batic, H. Schmid | The Dirac propagator in the Kerr-Newman metric | 29 pages, modifications in the abstract and in the introduction,
small improvements in section 2.1 | Prog.Theor.Phys. 116 (2006) 517-544 | 10.1143/PTP.116.517 | null | gr-qc | null | We give an alternative proof of the completeness of the Chandrasekhar ansatz
for the Dirac equation in the Kerr-Newman metric. Based on this, we derive an
integral representation for smooth compactly supported functions which in turn
we use to derive an integral representation for the propagator of solutions of
the C... | [
{
"created": "Mon, 12 Jun 2006 07:19:25 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Jul 2006 12:36:39 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Aug 2006 08:21:49 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Batic",
"D.",
""
],
[
"Schmid",
"H.",
""
]
] | We give an alternative proof of the completeness of the Chandrasekhar ansatz for the Dirac equation in the Kerr-Newman metric. Based on this, we derive an integral representation for smooth compactly supported functions which in turn we use to derive an integral representation for the propagator of solutions of the Cau... |
2312.07018 | Zhi Luo | Zhi Luo, Hao Yu, Jin Li | Observational appearance and additional photon rings of the asymmetric
thin-shell wormhole in Horndeski theory | 17 pages, 7 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the observational appearance of the asymmetric
thin-shell wormhole (ATW) in Horndeski theory by employing the ray-tracing
method. We first calculate the effective potential and null geodesic of the
ATW, and then we obtain the deflection angle of the photon in the ATW
spacetime. Based on the im... | [
{
"created": "Tue, 12 Dec 2023 07:11:45 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Jan 2024 08:17:27 GMT",
"version": "v2"
}
] | 2024-01-17 | [
[
"Luo",
"Zhi",
""
],
[
"Yu",
"Hao",
""
],
[
"Li",
"Jin",
""
]
] | In this paper, we study the observational appearance of the asymmetric thin-shell wormhole (ATW) in Horndeski theory by employing the ray-tracing method. We first calculate the effective potential and null geodesic of the ATW, and then we obtain the deflection angle of the photon in the ATW spacetime. Based on the impa... |
gr-qc/0110084 | Burkhard Kleihaus | B. Kleihaus, J. Kunz, A. Sood, M. Wirschins | Horizon Properties of Einstein-Yang-Mills Black Hole | 4 pages, 3 figues | Phys.Rev. D65 (2002) 061502 | 10.1103/PhysRevD.65.061502 | null | gr-qc | null | We consider static axially symmetric Einstein-Yang-Mills black holes in the
isolated horizon formalism. The mass of these hairy black holes is related to
the mass of the corresponding particle-like solutions by the horizon mass. The
hairy black holes violate the ``quasi-local uniqueness conjecture'', based on
the hor... | [
{
"created": "Fri, 19 Oct 2001 14:40:35 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Kleihaus",
"B.",
""
],
[
"Kunz",
"J.",
""
],
[
"Sood",
"A.",
""
],
[
"Wirschins",
"M.",
""
]
] | We consider static axially symmetric Einstein-Yang-Mills black holes in the isolated horizon formalism. The mass of these hairy black holes is related to the mass of the corresponding particle-like solutions by the horizon mass. The hairy black holes violate the ``quasi-local uniqueness conjecture'', based on the horiz... |
0905.1801 | Subenoy Chakraborty | Ritabrata Biswas, Subenoy Chakraborty | Black holes in the Einstein -Gauss-Bonnet theory and the geometry of
their thermodynamics-II | 7 pages | Astrophys.Space Sci.326:39-44,2010 | 10.1007/s10509-009-0202-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work we study (i) charged black hole in Einstein-Gauss-Bonnet
(EGB) theory, known as Einstein-Maxwell-Gauss-Bonnet (EMGB) black hole and (ii)
black hole in EGB gravity with Yang-Mills field. The thermodynamic geometry of
these two black hole solutions has been investigated, using the modified
entropy i... | [
{
"created": "Tue, 12 May 2009 09:59:51 GMT",
"version": "v1"
}
] | 2010-02-11 | [
[
"Biswas",
"Ritabrata",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | In the present work we study (i) charged black hole in Einstein-Gauss-Bonnet (EGB) theory, known as Einstein-Maxwell-Gauss-Bonnet (EMGB) black hole and (ii) black hole in EGB gravity with Yang-Mills field. The thermodynamic geometry of these two black hole solutions has been investigated, using the modified entropy in ... |
2211.10401 | Saeed Noori Gashti | J. Sadeghi, S. Noori Gashti, and T. Azizi | Tsallis holographic dark energy under Complex form of Quintessence model | 22 pages, 4 figures, Accepted for publication in Communications in
Theoretical Physics | Communications in Theoretical Physics 75 025402 (2023) | 10.1088/1572-9494/aca390 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this paper, we use a Tsallis holographic dark energy model in two forms,
interacting and non-interacting cases, to acquire some parameters as the
equation of state for the energy density of the Tsallis model in the FRW
universe concerning the complex form of quintessence model. We will study the
cosmology of compl... | [
{
"created": "Fri, 18 Nov 2022 18:02:59 GMT",
"version": "v1"
}
] | 2023-03-14 | [
[
"Sadeghi",
"J.",
""
],
[
"Gashti",
"S. Noori",
""
],
[
"Azizi",
"T.",
""
]
] | In this paper, we use a Tsallis holographic dark energy model in two forms, interacting and non-interacting cases, to acquire some parameters as the equation of state for the energy density of the Tsallis model in the FRW universe concerning the complex form of quintessence model. We will study the cosmology of complex... |
2202.11906 | Imtiyaz Bhat Ahmad | Moh Vaseem Akram, Imtiyaz Ahmad Bhat, Anver Aziz, Mir Faizal | The effect of loop quantum gravitational rainbow functions on the
formation of naked singularities | 16 pages, 2 figures | Int.J.Mod.Phys.A 37 (2022) 28n29, 2250179 | 10.1142/S0217751X22501792 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we will investigate the consequences of loop quantum
gravitational modifications on the formation of naked singularities. The loop
quantum gravitational effects will be incorporated in the collapsing system
using gravity's rainbow. This will be done by using rainbow functions, which
are constructed fro... | [
{
"created": "Thu, 24 Feb 2022 05:17:03 GMT",
"version": "v1"
}
] | 2023-02-28 | [
[
"Akram",
"Moh Vaseem",
""
],
[
"Bhat",
"Imtiyaz Ahmad",
""
],
[
"Aziz",
"Anver",
""
],
[
"Faizal",
"Mir",
""
]
] | In this paper, we will investigate the consequences of loop quantum gravitational modifications on the formation of naked singularities. The loop quantum gravitational effects will be incorporated in the collapsing system using gravity's rainbow. This will be done by using rainbow functions, which are constructed from ... |
1804.00461 | Cosimo Bambi | Hrishikesh Chakrabarty, Askar B. Abdikamalov, Ahmadjon A.
Abdujabbarov, Cosimo Bambi | Weak gravitational lensing: a compact object with arbitrary quadrupole
moment immersed in plasma | 9 pages, 4 figures. v2: refereed version | Phys. Rev. D 98, 024022 (2018) | 10.1103/PhysRevD.98.024022 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study weak gravitational lensing around a compact object with arbitrary
quadrupole moment in the presence of plasma. The studied compact objects are
considered to be spherically symmetric. The additional parameter $\epsilon$
regulating the quadrupole moment in the metric alters the deflection angle of
light rays a... | [
{
"created": "Mon, 2 Apr 2018 11:54:35 GMT",
"version": "v1"
},
{
"created": "Fri, 13 Jul 2018 14:09:05 GMT",
"version": "v2"
}
] | 2018-07-16 | [
[
"Chakrabarty",
"Hrishikesh",
""
],
[
"Abdikamalov",
"Askar B.",
""
],
[
"Abdujabbarov",
"Ahmadjon A.",
""
],
[
"Bambi",
"Cosimo",
""
]
] | We study weak gravitational lensing around a compact object with arbitrary quadrupole moment in the presence of plasma. The studied compact objects are considered to be spherically symmetric. The additional parameter $\epsilon$ regulating the quadrupole moment in the metric alters the deflection angle of light rays alo... |
1710.04496 | Zhongwen Feng | Zhong-Wen Feng, De-Ling Tang, Dan-Dan Feng, Shu-Zheng Yang | The thermodynamics and phase transition of a rainbow black hole | 9 pages, 7 figs, accepted to Modern Physics Letters A | Modern Physics Letters A 2020,35(5): 2050010 | 10.1142/S0217732320500108 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work, we construct a new kind of rainbow functions, which has
generalized uncertainty principle parameter. Then, we investigate modified
thermodynamic quantities and phase transition of rainbow Schwarzschild black
hole by employing this new kind of rainbow functions. Our results demonstrate
that the rainbow g... | [
{
"created": "Sun, 8 Oct 2017 03:46:40 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Oct 2017 09:32:13 GMT",
"version": "v2"
},
{
"created": "Sun, 29 Sep 2019 12:42:47 GMT",
"version": "v3"
}
] | 2020-07-01 | [
[
"Feng",
"Zhong-Wen",
""
],
[
"Tang",
"De-Ling",
""
],
[
"Feng",
"Dan-Dan",
""
],
[
"Yang",
"Shu-Zheng",
""
]
] | In this work, we construct a new kind of rainbow functions, which has generalized uncertainty principle parameter. Then, we investigate modified thermodynamic quantities and phase transition of rainbow Schwarzschild black hole by employing this new kind of rainbow functions. Our results demonstrate that the rainbow gra... |
gr-qc/0307062 | Carlos Augusto Romero Filho | A.Barros, V.B.Bezerra and C.Romero | Global aspects of gravitomagnetism | 10 pages - Typeset using REVTEX | Mod.Phys.Lett. A18 (2003) 2673-2679 | 10.1142/S0217732303012143 | null | gr-qc | null | We consider global properties of gravitomagnetism by investigating the
gravitomagnetic field of a rotating cosmic string. We show that although the
gravitomagnetic field produced by such a configuration of matter vanishes
locally, it can be detected globally. In this context we discuss the
gravitational analogue of t... | [
{
"created": "Sat, 12 Jul 2003 15:49:05 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Barros",
"A.",
""
],
[
"Bezerra",
"V. B.",
""
],
[
"Romero",
"C.",
""
]
] | We consider global properties of gravitomagnetism by investigating the gravitomagnetic field of a rotating cosmic string. We show that although the gravitomagnetic field produced by such a configuration of matter vanishes locally, it can be detected globally. In this context we discuss the gravitational analogue of the... |
2105.08287 | Alberto Roper Pol | Alberto Roper Pol | Gravitational radiation from MHD turbulence in the early universe | Contribution to the 2021 Gravitation session of the 55th Rencontres
de Moriond | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I briefly discuss recent results of numerical simulations addressing the
generation of a cosmological gravitational wave background produced by
turbulence sources in the early universe. Contribution to the 2021 Gravitation
session of the 55th Rencontres de Moriond.
| [
{
"created": "Tue, 18 May 2021 05:30:00 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Jul 2021 12:29:08 GMT",
"version": "v2"
},
{
"created": "Thu, 19 May 2022 00:56:24 GMT",
"version": "v3"
}
] | 2022-05-20 | [
[
"Pol",
"Alberto Roper",
""
]
] | I briefly discuss recent results of numerical simulations addressing the generation of a cosmological gravitational wave background produced by turbulence sources in the early universe. Contribution to the 2021 Gravitation session of the 55th Rencontres de Moriond. |
0904.3184 | Julien Bolmont | J. Bolmont, R. Buehler, A. Jacholkowska, S. J. Wagner (for the
H.E.S.S. Collaboration) | Search for Lorentz Invariance Violation effects with PKS 2155-304
flaring period in 2006 by H.E.S.S | Proceedings of the LIVth Rencontres de Moriond. 4 pages, 4 figures.
V2, V3: references added | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Highly energetic, variable and distant sources such as Active Galactic Nuclei
provide a good opportunity to evaluate effects due to the emission and the
propagation of high energy photons. In this note, a study of possible
energy-dependent time-lags with PKS 2155-304 light curve as measured by
H.E.S.S. in July 2006 i... | [
{
"created": "Tue, 21 Apr 2009 08:11:18 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Apr 2009 09:23:50 GMT",
"version": "v2"
},
{
"created": "Mon, 4 May 2009 12:53:51 GMT",
"version": "v3"
}
] | 2019-08-14 | [
[
"Bolmont",
"J.",
"",
"for the\n H.E.S.S. Collaboration"
],
[
"Buehler",
"R.",
"",
"for the\n H.E.S.S. Collaboration"
],
[
"Jacholkowska",
"A.",
"",
"for the\n H.E.S.S. Collaboration"
],
[
"Wagner",
"S. J.",
"",
"for the\n H.E.S.S. Col... | Highly energetic, variable and distant sources such as Active Galactic Nuclei provide a good opportunity to evaluate effects due to the emission and the propagation of high energy photons. In this note, a study of possible energy-dependent time-lags with PKS 2155-304 light curve as measured by H.E.S.S. in July 2006 is ... |
gr-qc/9310034 | null | Dieter R. Brill | Comments on Initial Value Formulation | 4 pages, TEX, UMD94-52 | null | null | null | gr-qc | null | This is the reply given at the conference ``Mach's Principle" at T\"ubingen
in July 1993 to the paper by Isenberg (1993a). Unfortunately the Isenberg paper
itself was not submitted to gr-qc.
| [
{
"created": "Mon, 25 Oct 1993 21:48:02 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Brill",
"Dieter R.",
""
]
] | This is the reply given at the conference ``Mach's Principle" at T\"ubingen in July 1993 to the paper by Isenberg (1993a). Unfortunately the Isenberg paper itself was not submitted to gr-qc. |
gr-qc/0305103 | Ujjal Debnath | Subenoy Chakraborty, N. C. Chakraborty and Ujjal Debnath | A Quintessence Problem in Self-interacting Brans-Dicke Theory | 8 Latex pages, No figure, Revtex style | Int.J.Mod.Phys. A18 (2003) 3315-3324 | 10.1142/S0217751X03015064 | null | gr-qc | null | A quintessence scalar field in self-interacting Brans-Dicke theory is shown
to give rise to a non-decelerated expansion of the present universe for open,
flat and closed models. Along with providing a non-decelerating solution, it
can potentially solve the flatness problem too.
| [
{
"created": "Wed, 28 May 2003 11:49:19 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Chakraborty",
"Subenoy",
""
],
[
"Chakraborty",
"N. C.",
""
],
[
"Debnath",
"Ujjal",
""
]
] | A quintessence scalar field in self-interacting Brans-Dicke theory is shown to give rise to a non-decelerated expansion of the present universe for open, flat and closed models. Along with providing a non-decelerating solution, it can potentially solve the flatness problem too. |
0802.3656 | Peter Kuhfittig K.F. | Peter K.F. Kuhfittig | Theoretical construction of wormholes supported by Chaplygin gas | Invited talk at the Fourth International Conference of Applied
Mathematics and Computing in Plovdiv, Bulgaria (August, 2007) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The purpose of this paper is to examine the possible existence or
construction of traversable wormholes supported by generalized Chaplygin gas
(GCG) by starting with a general line element and the Einstein tensor, together
with the equation of state, thereby continuing an earlier study by the author
of wormholes supp... | [
{
"created": "Mon, 25 Feb 2008 17:00:21 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Dec 2008 15:33:54 GMT",
"version": "v2"
},
{
"created": "Mon, 16 Mar 2009 16:01:07 GMT",
"version": "v3"
}
] | 2009-03-16 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | The purpose of this paper is to examine the possible existence or construction of traversable wormholes supported by generalized Chaplygin gas (GCG) by starting with a general line element and the Einstein tensor, together with the equation of state, thereby continuing an earlier study by the author of wormholes suppor... |
2209.15089 | Robert Svarc | Robert Svarc, Alena Pravdova, David Miskovsky | The Newman-Penrose formalism in quadratic gravity | 25 pages, to be submitted | null | 10.1103/PhysRevD.107.024036 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quadratic gravity constraints are reformulated in terms of the
Newman-Penrose-like quantities. In such a frame language, the field equations
represent a linear algebraic system for the Ricci tensor components. In
principle, a procedure for the combination of the Ricci components with
standard geometric identities... | [
{
"created": "Thu, 29 Sep 2022 20:45:40 GMT",
"version": "v1"
}
] | 2023-02-08 | [
[
"Svarc",
"Robert",
""
],
[
"Pravdova",
"Alena",
""
],
[
"Miskovsky",
"David",
""
]
] | The quadratic gravity constraints are reformulated in terms of the Newman-Penrose-like quantities. In such a frame language, the field equations represent a linear algebraic system for the Ricci tensor components. In principle, a procedure for the combination of the Ricci components with standard geometric identities c... |
gr-qc/0403093 | Albert Lazzarini | A. Lazzarini, S. Bose, P. Fritschel, M. McHugh, T. Regimbau, K.
Reilly, J.D. Romano, J. T. Whelan, S. Whitcomb, B. F. Whiting | Optimal combination of signals from co-located gravitational wave
interferometers for use in searches for a stochastic background | 14 pages, 4 figures, submitted to Physical Review D Resubmitted after
editing paper in response to referee comments. Removed appendices A, B and
edited text accordingly. Improved legibility of figures. Corrected several
references. Corrected reference to science run number (S1 vs. S2) in text and
figure caption... | Phys.Rev.D70:062001,2004 | 10.1103/PhysRevD.70.062001 | null | gr-qc | null | This article derives an optimal (i.e., unbiased, minimum variance) estimator
for the pseudo-detector strain for a pair of co-located gravitational wave
interferometers (such as the pair of LIGO interferometers at its Hanford
Observatory), allowing for possible instrumental correlations between the two
detectors. The ... | [
{
"created": "Tue, 23 Mar 2004 01:49:47 GMT",
"version": "v1"
},
{
"created": "Sat, 12 Jun 2004 16:24:45 GMT",
"version": "v2"
},
{
"created": "Mon, 21 Jun 2004 22:20:48 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Lazzarini",
"A.",
""
],
[
"Bose",
"S.",
""
],
[
"Fritschel",
"P.",
""
],
[
"McHugh",
"M.",
""
],
[
"Regimbau",
"T.",
""
],
[
"Reilly",
"K.",
""
],
[
"Romano",
"J. D.",
""
],
[
"Whelan",
"J. T."... | This article derives an optimal (i.e., unbiased, minimum variance) estimator for the pseudo-detector strain for a pair of co-located gravitational wave interferometers (such as the pair of LIGO interferometers at its Hanford Observatory), allowing for possible instrumental correlations between the two detectors. The te... |
gr-qc/9703044 | Alejandro Corichi | Christopher Beetle and Alejandro Corichi | Bibliography of publications related to Classical and Quantum Gravity in
terms of Connection and Loop Variables | 25 pages, latex file | null | null | null | gr-qc | null | This bibliography attempts to give a comprehensive overview of all the
literature related to the Ashtekar connection and the Rovelli-Smolin loop
variables. The original version was compiled by Peter H\"ubner in 1989, and it
has been subsequently updated by Gabriela Gonzalez, Bernd Br\"ugmann, Monica
Pierri, Troy Schi... | [
{
"created": "Tue, 18 Mar 1997 01:07:33 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Beetle",
"Christopher",
""
],
[
"Corichi",
"Alejandro",
""
]
] | This bibliography attempts to give a comprehensive overview of all the literature related to the Ashtekar connection and the Rovelli-Smolin loop variables. The original version was compiled by Peter H\"ubner in 1989, and it has been subsequently updated by Gabriela Gonzalez, Bernd Br\"ugmann, Monica Pierri, Troy Schill... |
0802.1141 | Norbert Van den Bergh | Liselotte De Groote and Norbert Van den Bergh | Newman Tamburino solutions with an aligned Maxwell field | 5 pages | null | null | null | gr-qc | null | We prove that there exists no aligned Einstein Maxwell generalization of the
spherical class of Newman Tamburino solutions. The presence of an aligned
Maxwell field automatically leads to the cylindrical class.
| [
{
"created": "Fri, 8 Feb 2008 13:02:19 GMT",
"version": "v1"
}
] | 2008-02-11 | [
[
"De Groote",
"Liselotte",
""
],
[
"Bergh",
"Norbert Van den",
""
]
] | We prove that there exists no aligned Einstein Maxwell generalization of the spherical class of Newman Tamburino solutions. The presence of an aligned Maxwell field automatically leads to the cylindrical class. |
1901.05766 | Mahdi Rashki | Mahdi Rashki, Majid Fathi, Behrang Mostaghel and Sahram Jalalzadeh | Interacting Dark Side of Universe Through Generalized Uncertainty
Principle | 16 pages, 12 figures, appeared in IJMPD 2019 | null | 10.1142/S0218271819500810 | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | We investigate the impact of the generalized uncertainty principle proposed
by some approaches to quantum gravity such as string theory and doubly special
relativity on the cosmology. Using generalized Poisson brackets, we obtain the
modified Friedmann and Raychaudhuri equations and suggest a dynamical dark
energy to... | [
{
"created": "Thu, 17 Jan 2019 12:43:04 GMT",
"version": "v1"
},
{
"created": "Sun, 20 Jan 2019 10:07:21 GMT",
"version": "v2"
}
] | 2019-05-22 | [
[
"Rashki",
"Mahdi",
""
],
[
"Fathi",
"Majid",
""
],
[
"Mostaghel",
"Behrang",
""
],
[
"Jalalzadeh",
"Sahram",
""
]
] | We investigate the impact of the generalized uncertainty principle proposed by some approaches to quantum gravity such as string theory and doubly special relativity on the cosmology. Using generalized Poisson brackets, we obtain the modified Friedmann and Raychaudhuri equations and suggest a dynamical dark energy to e... |
1606.08307 | Shao-Jiang Wang | Rong-Gen Cai, Shan-Ming Ruan, Shao-Jiang Wang, Run-Qiu Yang, Rong-Hui
Peng | Complexity Growth for AdS Black Holes | v1, 10 pages, 2 figures, two columns; v2, 20 pages, 2 figures, JHEP
style, references added; v3, 23 pages, 2 figures, discussions extended and
references added, to be published in JHEP with title "Action Growth for AdS
Black Holes" | JHEP 1609(2016)161 | 10.1007/JHEP09(2016)161 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently a Complexity-Action (CA) duality conjecture has been proposed, which
relates the quantum complexity of a holographic boundary state to the action of
a Wheeler-DeWitt (WDW) patch in the anti-de Sitter (AdS) bulk. In this paper we
further investigate the duality conjecture for stationary AdS black holes and
de... | [
{
"created": "Thu, 23 Jun 2016 16:00:09 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jul 2016 16:47:14 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Sep 2016 15:26:32 GMT",
"version": "v3"
}
] | 2016-09-30 | [
[
"Cai",
"Rong-Gen",
""
],
[
"Ruan",
"Shan-Ming",
""
],
[
"Wang",
"Shao-Jiang",
""
],
[
"Yang",
"Run-Qiu",
""
],
[
"Peng",
"Rong-Hui",
""
]
] | Recently a Complexity-Action (CA) duality conjecture has been proposed, which relates the quantum complexity of a holographic boundary state to the action of a Wheeler-DeWitt (WDW) patch in the anti-de Sitter (AdS) bulk. In this paper we further investigate the duality conjecture for stationary AdS black holes and deri... |
gr-qc/0212037 | Pestov | Ivanhoe Pestov (JINR, Dubna) | Geometry of Manifolds and Dark Matter | Proceedings of the 5th International Workshop on Complex Structures
and Vector Fields, Eds. S.Dimiev and K.Sekigawa (World Scientific, Singapore,
2001), p.180 | null | null | null | gr-qc | null | It is shown that the theory of dark matter can be derived from the first
principles. Particles representing a new form of matter gravitate but do not
interact electromagnetically, strongly and weakly with the known elementary
particles. Physics of these particles is defined by the Planck scales.
| [
{
"created": "Mon, 9 Dec 2002 11:33:12 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pestov",
"Ivanhoe",
"",
"JINR, Dubna"
]
] | It is shown that the theory of dark matter can be derived from the first principles. Particles representing a new form of matter gravitate but do not interact electromagnetically, strongly and weakly with the known elementary particles. Physics of these particles is defined by the Planck scales. |
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