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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2112.06117 | Manuel Gonzalez-Espinoza | Manuel Gonzalez-Espinoza, Giovanni Otalora, Lucila Kraiselburd, Susana
Landau | Parametrized post-Newtonian formalism in higher-order Teleparallel
Gravity | null | Journal of Cosmology and Astroparticle Physics (2022) | 10.1088/1475-7516/2022/05/010 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the parametrized post-Newtonian (PPN) limit of
higher-derivative-torsion Modified Teleparallel Gravity. We start from the
covariant formulation of modified Teleparallel Gravity by restoring the spin
connection of the theory. Then, we perform the post-Newtonian expansion of the
tetrad field around the Minkows... | [
{
"created": "Sun, 12 Dec 2021 02:13:12 GMT",
"version": "v1"
}
] | 2022-05-11 | [
[
"Gonzalez-Espinoza",
"Manuel",
""
],
[
"Otalora",
"Giovanni",
""
],
[
"Kraiselburd",
"Lucila",
""
],
[
"Landau",
"Susana",
""
]
] | We study the parametrized post-Newtonian (PPN) limit of higher-derivative-torsion Modified Teleparallel Gravity. We start from the covariant formulation of modified Teleparallel Gravity by restoring the spin connection of the theory. Then, we perform the post-Newtonian expansion of the tetrad field around the Minkowski... |
gr-qc/0003087 | Gaetano Lambiase | S. Capozziello, A. Feoli, G. Lambiase, G. Papini, G. Scarpetta | Massive Scalar Particles in a Modified Schwarzschild Geometry | 14 pages, 2 figures, to appear in Phys. Lett. A | Phys.Lett. A268 (2000) 247-254 | 10.1016/S0375-9601(00)00215-2 | null | gr-qc | null | Massive, spinless bosons have vanishing probability of reaching the sphere
r=2M from the region r>2M when the original Schwarzschild metric is modified by
maximal acceleration corrections.
| [
{
"created": "Wed, 22 Mar 2000 16:06:01 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Capozziello",
"S.",
""
],
[
"Feoli",
"A.",
""
],
[
"Lambiase",
"G.",
""
],
[
"Papini",
"G.",
""
],
[
"Scarpetta",
"G.",
""
]
] | Massive, spinless bosons have vanishing probability of reaching the sphere r=2M from the region r>2M when the original Schwarzschild metric is modified by maximal acceleration corrections. |
gr-qc/0212120 | Saibal Ray | Saibal Ray and Sumana Bhadra | Classical Electron Model with Negative Energy Density in Einstein-Cartan
Theory of Gravitation | 12 Latex pages, added refs and conclusions | Int.J.Mod.Phys. D13 (2004) 555-566 | 10.1142/S0218271804004712 | null | gr-qc | null | Experimental result regarding the maximum limit of the radius of the electron
\sim 10^{-16} cm and a few of the theoretical works suggest that the
gravitational mass which is a priori a positive quantity in Newtonian mechanics
may become negative in general theory of relativity. It is argued that such a
negative grav... | [
{
"created": "Sun, 29 Dec 2002 17:38:52 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Oct 2005 07:30:51 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Ray",
"Saibal",
""
],
[
"Bhadra",
"Sumana",
""
]
] | Experimental result regarding the maximum limit of the radius of the electron \sim 10^{-16} cm and a few of the theoretical works suggest that the gravitational mass which is a priori a positive quantity in Newtonian mechanics may become negative in general theory of relativity. It is argued that such a negative gravit... |
2003.11391 | Mohammed Khalil | Andrea Antonelli, Chris Kavanagh, Mohammed Khalil, Jan Steinhoff,
Justin Vines | Gravitational spin-orbit coupling through third-subleading
post-Newtonian order: from first-order self-force to arbitrary mass ratios | 8 pages, 2 figures. v2: matches version accepted in PRL | Phys. Rev. Lett. 125, 011103 (2020) | 10.1103/PhysRevLett.125.011103 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Exploiting simple yet remarkable properties of relativistic gravitational
scattering, we use first-order self-force (linear-in-mass-ratio) results to
obtain arbitrary-mass-ratio results for the complete third-subleading
post-Newtonian (4.5PN) corrections to the spin-orbit sector of spinning-binary
conservative dynami... | [
{
"created": "Wed, 25 Mar 2020 16:47:47 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Jun 2020 16:01:44 GMT",
"version": "v2"
}
] | 2020-07-08 | [
[
"Antonelli",
"Andrea",
""
],
[
"Kavanagh",
"Chris",
""
],
[
"Khalil",
"Mohammed",
""
],
[
"Steinhoff",
"Jan",
""
],
[
"Vines",
"Justin",
""
]
] | Exploiting simple yet remarkable properties of relativistic gravitational scattering, we use first-order self-force (linear-in-mass-ratio) results to obtain arbitrary-mass-ratio results for the complete third-subleading post-Newtonian (4.5PN) corrections to the spin-orbit sector of spinning-binary conservative dynamics... |
0805.3419 | Stefan Hollands | S. Hollands and R. M. Wald | Quantum field theory in curved spacetime, the operator product
expansion, and dark energy | 9 pages, essay awarded 4th prize by Gravity Research Foundation | Gen.Rel.Grav.40:2051-2059,2008 | 10.1007/s10714-008-0672-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | To make sense of quantum field theory in an arbitrary (globally hyperbolic)
curved spacetime, the theory must be formulated in a local and covariant manner
in terms of locally measureable field observables. Since a generic curved
spacetime does not possess symmetries or a unique notion of a vacuum state, the
theory a... | [
{
"created": "Thu, 22 May 2008 09:40:59 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Hollands",
"S.",
""
],
[
"Wald",
"R. M.",
""
]
] | To make sense of quantum field theory in an arbitrary (globally hyperbolic) curved spacetime, the theory must be formulated in a local and covariant manner in terms of locally measureable field observables. Since a generic curved spacetime does not possess symmetries or a unique notion of a vacuum state, the theory als... |
2209.12179 | Mouhssine Koussour | A. Hanin, M. Koussour, Z. Sakhi and M. Bennai | Quintessence like behavior of symmetric teleparallel dark energy: Linear
and nonlinear model | Submitted to IJGMMP | null | 10.1142/S0219887823501840 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Einstein's General Relativity (GR), the gravitational interactions are
described by the spacetime curvature. Recently, other alternative geometric
formulations and representations of GR have emerged in which the gravitational
interactions are described by the so-called torsion or non-metricity. Here, we
consider t... | [
{
"created": "Sun, 25 Sep 2022 08:41:01 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Feb 2023 05:34:36 GMT",
"version": "v2"
}
] | 2023-08-16 | [
[
"Hanin",
"A.",
""
],
[
"Koussour",
"M.",
""
],
[
"Sakhi",
"Z.",
""
],
[
"Bennai",
"M.",
""
]
] | In Einstein's General Relativity (GR), the gravitational interactions are described by the spacetime curvature. Recently, other alternative geometric formulations and representations of GR have emerged in which the gravitational interactions are described by the so-called torsion or non-metricity. Here, we consider the... |
2006.15303 | M Blagojevi\'c | Milutin Blagojevi\'c and James M. Nester | Local symmetries and physical degrees of freedom in $f(T)$ gravity: a
Dirac Hamiltonian constraint analysis | LaTeX, 32 pages; v4: Small but important changes in Abstract and
subsections 3.3 and 6.2 | Phys. Rev. D 102, 064025 (2020) | 10.1103/PhysRevD.102.064025 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the literature on $f(T)$ gravity, the status of local Lorentz invariance
and the number of physical degrees of freedom have been controversial issues.
Relying on a detailed Hamiltonian analysis, we show that there are several
scenarios describing how local Lorentz invariance can be broken, but in the
generic case,... | [
{
"created": "Sat, 27 Jun 2020 07:10:55 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Sep 2020 16:25:58 GMT",
"version": "v2"
},
{
"created": "Tue, 4 May 2021 07:55:44 GMT",
"version": "v3"
},
{
"created": "Thu, 23 Sep 2021 07:08:19 GMT",
"version": "v4"
}
] | 2021-09-24 | [
[
"Blagojević",
"Milutin",
""
],
[
"Nester",
"James M.",
""
]
] | In the literature on $f(T)$ gravity, the status of local Lorentz invariance and the number of physical degrees of freedom have been controversial issues. Relying on a detailed Hamiltonian analysis, we show that there are several scenarios describing how local Lorentz invariance can be broken, but in the generic case, t... |
0911.3910 | Aleksandar Rakic | Aleksandar Rakic, Dennis Simon, Julian Adamek and Jens C. Niemeyer | On the fate of vacuum bubbles on matter backgrounds | 4 pages, 2 figures, proceedings (Annalen der Physik) of the
Grassmannian Conference in Fundamental Cosmology (Grasscosmofun'09) Szczecin,
Poland, 14-19 September 2009 | Annalen Phys.19:336-339,2010 | 10.1002/andp.201010441 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter we discuss cosmological first order phase transitions with de
Sitter bubbles nucleating on (inhomogeneous) matter backgrounds. The de Sitter
bubble can be a toy model for an inflationary phase of universes like our own.
Using the thin wall approximation and the Israel junction method we trace the
class... | [
{
"created": "Thu, 19 Nov 2009 21:14:58 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Rakic",
"Aleksandar",
""
],
[
"Simon",
"Dennis",
""
],
[
"Adamek",
"Julian",
""
],
[
"Niemeyer",
"Jens C.",
""
]
] | In this letter we discuss cosmological first order phase transitions with de Sitter bubbles nucleating on (inhomogeneous) matter backgrounds. The de Sitter bubble can be a toy model for an inflationary phase of universes like our own. Using the thin wall approximation and the Israel junction method we trace the classic... |
1007.4610 | Ken-Ichi Nakao | Ken-ichi Nakao, Tomohiro Harada, Umpei Miyamoto | Visible borders of spacetime generated by high-energy collisions | 9 pages | Phys.Rev.D82:121501,2010 | 10.1103/PhysRevD.82.121501 | OCU-PHYS-334, AP-GR-79 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Several years ago, two of the present authors proposed the concept of the
border of spacetime as a generalization of spacetime singularities. Visible
borders of spacetime, which replace naked singularities of classical theory,
are not only necessary for the mathematical completeness of general relativity
but they als... | [
{
"created": "Tue, 27 Jul 2010 02:57:27 GMT",
"version": "v1"
}
] | 2010-12-24 | [
[
"Nakao",
"Ken-ichi",
""
],
[
"Harada",
"Tomohiro",
""
],
[
"Miyamoto",
"Umpei",
""
]
] | Several years ago, two of the present authors proposed the concept of the border of spacetime as a generalization of spacetime singularities. Visible borders of spacetime, which replace naked singularities of classical theory, are not only necessary for the mathematical completeness of general relativity but they also ... |
1612.07116 | Emanuele Alesci | Emanuele Alesci, Gioele Botta, Francesco Cianfrani, Stefano Liberati | Cosmological singularity resolution from quantum gravity: the
emergent-bouncing universe | 6 pages, 2 figures. Revised version accepted for publication in PRD.
In this new version improved numerical simulations show damped oscillations
in the pre- bounce phase. Full Discussion section added | Phys. Rev. D 96, 046008 (2017) | 10.1103/PhysRevD.96.046008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Alternative scenarios to the Big Bang singularity have been subject of
intense research for several decades by now. Most popular in this sense have
been frameworks were such singularity is replaced by a bounce around some
minimal cosmological volume or by some early quantum phase. This latter
scenario was devised a l... | [
{
"created": "Wed, 21 Dec 2016 14:01:22 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Sep 2017 17:24:19 GMT",
"version": "v2"
}
] | 2017-09-25 | [
[
"Alesci",
"Emanuele",
""
],
[
"Botta",
"Gioele",
""
],
[
"Cianfrani",
"Francesco",
""
],
[
"Liberati",
"Stefano",
""
]
] | Alternative scenarios to the Big Bang singularity have been subject of intense research for several decades by now. Most popular in this sense have been frameworks were such singularity is replaced by a bounce around some minimal cosmological volume or by some early quantum phase. This latter scenario was devised a lon... |
1601.06084 | Thomas B\"ackdahl | Steffen Aksteiner, Lars Andersson and Thomas B\"ackdahl | New identities for linearized gravity on the Kerr spacetime | Operators now without valence indices. 20 pages | Phys. Rev. D 99, 044043 (2019) | 10.1103/PhysRevD.99.044043 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we derive a differential identity for linearized gravity on the
Kerr spacetime and more generally on vacuum spacetimes of Petrov type D. We
show that a linear combination of second derivatives of the linearized Weyl
tensor can be formed into a complex symmetric 2-tensor $\mathcal{M}_{ab}$ which
solves t... | [
{
"created": "Fri, 22 Jan 2016 17:46:05 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Apr 2017 13:11:25 GMT",
"version": "v2"
},
{
"created": "Mon, 25 Feb 2019 16:13:44 GMT",
"version": "v3"
}
] | 2019-02-26 | [
[
"Aksteiner",
"Steffen",
""
],
[
"Andersson",
"Lars",
""
],
[
"Bäckdahl",
"Thomas",
""
]
] | In this paper we derive a differential identity for linearized gravity on the Kerr spacetime and more generally on vacuum spacetimes of Petrov type D. We show that a linear combination of second derivatives of the linearized Weyl tensor can be formed into a complex symmetric 2-tensor $\mathcal{M}_{ab}$ which solves the... |
gr-qc/9612064 | null | Alexandr K. Guts | Time machine as four-dimensional wormhole | 11 pages, LATEX | null | null | null | gr-qc | null | The following mechanism of action of Time machine is considered. Let
space-time $<V^4, g_{ik}>$ be a leaf of a foliation F of codimension 1 in
5-dimensional Lorentz manifold $<V^5, G_{AB}>$. If the Godbillon-Vey class
$GV(F) \neq 0$ then the foliation F has resilient leaves. Let $V^4$ be a
resilient leaf. Hence there... | [
{
"created": "Wed, 25 Dec 1996 15:28:16 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Guts",
"Alexandr K.",
""
]
] | The following mechanism of action of Time machine is considered. Let space-time $<V^4, g_{ik}>$ be a leaf of a foliation F of codimension 1 in 5-dimensional Lorentz manifold $<V^5, G_{AB}>$. If the Godbillon-Vey class $GV(F) \neq 0$ then the foliation F has resilient leaves. Let $V^4$ be a resilient leaf. Hence there e... |
1304.5983 | Bianca Dittrich | Valentin Bonzom, Bianca Dittrich | Dirac's discrete hypersurface deformation algebras | 25+5 pages | null | 10.1088/0264-9381/30/20/205013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The diffeomorphism symmetry of general relativity leads in the canonical
formulation to constraints, which encode the dynamics of the theory. These
constraints satisfy a complicated algebra, known as Dirac's hypersurface
deformation algebra. This algebra has been a long standing challenge for
quantization. One reason... | [
{
"created": "Mon, 22 Apr 2013 15:22:53 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Bonzom",
"Valentin",
""
],
[
"Dittrich",
"Bianca",
""
]
] | The diffeomorphism symmetry of general relativity leads in the canonical formulation to constraints, which encode the dynamics of the theory. These constraints satisfy a complicated algebra, known as Dirac's hypersurface deformation algebra. This algebra has been a long standing challenge for quantization. One reason i... |
gr-qc/9707058 | Karl-Peter Marzlin | Karl-Peter Marzlin and J"urgen Audretsch | States insensitive to the Unruh effect in multi-level detectors | 9 Pages, latex | Phys.Rev. D57 (1998) 1045-1051 | 10.1103/PhysRevD.57.1045 | null | gr-qc hep-th quant-ph | null | We give a general treatment of the spontaneous excitation rates and the
non-relativistic Lamb shift of constantly accelerated multi-level atoms as a
model for multi-level detectors. Using a covariant formulation of the dipole
coupling between the atom and the electromagnetic field we show that new
Raman-like transiti... | [
{
"created": "Wed, 30 Jul 1997 00:32:21 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Marzlin",
"Karl-Peter",
""
],
[
"Audretsch",
"J\"urgen",
""
]
] | We give a general treatment of the spontaneous excitation rates and the non-relativistic Lamb shift of constantly accelerated multi-level atoms as a model for multi-level detectors. Using a covariant formulation of the dipole coupling between the atom and the electromagnetic field we show that new Raman-like transition... |
gr-qc/9510007 | Mike Clayton | Eduard Prugovecki (Department of Mathematics, University of Toronto,
Toronto, ON, Canada) | On Quantum-Geometric Connections and Propagators in Curved Spacetime | Converted from a Mac-Word file to postscript for submission. The
author may be reached directly via the above address, or at:
prugov@math.utoronto.ca | Class.Quant.Grav. 13 (1996) 1007-1022 | 10.1088/0264-9381/13/5/017 | null | gr-qc hep-th | null | The basic properties of Poincare gauge invariant Hilbert bundles over
Lorentzian manifolds are derived. Quantum connections are introduced in such
bundles, which govern a parallel transport that is shown to satisfy the strong
equivalence principle in the quantum regime. Path-integral expressions are
presented for bos... | [
{
"created": "Wed, 4 Oct 1995 17:41:46 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Prugovecki",
"Eduard",
"",
"Department of Mathematics, University of Toronto,\n Toronto, ON, Canada"
]
] | The basic properties of Poincare gauge invariant Hilbert bundles over Lorentzian manifolds are derived. Quantum connections are introduced in such bundles, which govern a parallel transport that is shown to satisfy the strong equivalence principle in the quantum regime. Path-integral expressions are presented for boson... |
1607.02594 | Alessandro D.A.M. Spallicci di Filottrano | Alessandro D.A.M. Spallicci, Maurice H.P.M. van Putten | Gauge dependence and self-force from Galilean to Einsteinian free fall,
compact stars falling into black holes, Hawking radiation and the Pisa tower
at the general relativity centennial | null | Int. J. Geom. Meth. Mod. Phys., 13, 1630014 (2016) | 10.1142/S0219887816300142 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | (Short abstract). In Galilean physics, the universality of free fall implies
an inertial frame, which in turns implies that the mass m of the falling body
is omitted. Otherwise, an additional acceleration proportional to m/M would
rise either for an observer at the centre of mass of the system, or for an
observer at ... | [
{
"created": "Sat, 9 Jul 2016 10:10:07 GMT",
"version": "v1"
}
] | 2016-09-20 | [
[
"Spallicci",
"Alessandro D. A. M.",
""
],
[
"van Putten",
"Maurice H. P. M.",
""
]
] | (Short abstract). In Galilean physics, the universality of free fall implies an inertial frame, which in turns implies that the mass m of the falling body is omitted. Otherwise, an additional acceleration proportional to m/M would rise either for an observer at the centre of mass of the system, or for an observer at a ... |
gr-qc/9508012 | George Emanuel Aavram Matsas | George E.A. Matsas | Alternative Derivation of the Correspondence Between Rindler and
Minkowski Particles | 7 pages, no-figures, REVTEX | null | null | IFT-P.036/95 | gr-qc | null | We develop an alternative derivation of Unruh and Wald's seminal result that
the absorption of a Rindler particle by a detector as described by uniformly
accelerated observers corresponds to the emission of a Minkowski particle as
described by inertial observers. Actually, we present it in an inverted
version, namely... | [
{
"created": "Sat, 5 Aug 1995 14:45:56 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Matsas",
"George E. A.",
""
]
] | We develop an alternative derivation of Unruh and Wald's seminal result that the absorption of a Rindler particle by a detector as described by uniformly accelerated observers corresponds to the emission of a Minkowski particle as described by inertial observers. Actually, we present it in an inverted version, namely, ... |
1306.1571 | Michael Edmund Tobar | M. E. Tobar, P. L. Stanwix, J.J. McFerran, J. Gu\'ena, M. Abgrall, S.
Bize, A. Clairon, Ph. Laurent, P. Rosenbusch, D. Rovera, G. Santarelli | Testing local position and fundamental constant invariance due to
periodic gravitation and boost using long-term comparison of the SYRTE atomic
fountains and H-masers | accepted for publication in Phys Rev D | null | 10.1103/PhysRevD.87.122004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The frequencies of three separate Cs fountain clocks and one Rb fountain
clock have been compared to various hydrogen masers to search for periodic
changes correlated with the changing solar gravitational potential at the Earth
and boost with respect to the Cosmic Microwave Background (CMB) rest frame. The
data sets ... | [
{
"created": "Thu, 6 Jun 2013 23:11:07 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Tobar",
"M. E.",
""
],
[
"Stanwix",
"P. L.",
""
],
[
"McFerran",
"J. J.",
""
],
[
"Guéna",
"J.",
""
],
[
"Abgrall",
"M.",
""
],
[
"Bize",
"S.",
""
],
[
"Clairon",
"A.",
""
],
[
"Laurent",
"Ph."... | The frequencies of three separate Cs fountain clocks and one Rb fountain clock have been compared to various hydrogen masers to search for periodic changes correlated with the changing solar gravitational potential at the Earth and boost with respect to the Cosmic Microwave Background (CMB) rest frame. The data sets sp... |
1110.2234 | Giovanni Salesi | Giovanni Salesi | Lorentz-violating dynamics in the pre-Planckian Universe | 7 pages | Phys. Rev. D 85, 063502 (2012) | 10.1103/PhysRevD.85.063502 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have recently proposed a Lorentz-violating energy-momentum relation
entailing an exact momentum cutoff and studied various physical applications of
that dispersion law. By a simple phenomenological approach we here study
Lorentz violation effects on early Universe and pre-Planckian cosmological
radiation. In parti... | [
{
"created": "Mon, 10 Oct 2011 23:45:00 GMT",
"version": "v1"
}
] | 2012-03-06 | [
[
"Salesi",
"Giovanni",
""
]
] | We have recently proposed a Lorentz-violating energy-momentum relation entailing an exact momentum cutoff and studied various physical applications of that dispersion law. By a simple phenomenological approach we here study Lorentz violation effects on early Universe and pre-Planckian cosmological radiation. In particu... |
2010.06355 | Salvatore Capozziello | Gamal G.L. Nashed and Salvatore Capozziello | Stable and self-consistent compact star models in teleparallel gravity | 21 pages, 14 figures, accepted for publication in EPJC | null | 10.1140/epjc/s10052-020-08551-1 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the framework of Teleparallel Gravity, we derive a charged non-vacuum
solution for a physically symmetric tetrad field with two unknown functions of
radial coordinate. The field equations result in a closed-form adopting
particular metric potentials and a suitable anisotropy function combined with
the charge. Unde... | [
{
"created": "Tue, 13 Oct 2020 13:12:34 GMT",
"version": "v1"
}
] | 2020-12-02 | [
[
"Nashed",
"Gamal G. L.",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | In the framework of Teleparallel Gravity, we derive a charged non-vacuum solution for a physically symmetric tetrad field with two unknown functions of radial coordinate. The field equations result in a closed-form adopting particular metric potentials and a suitable anisotropy function combined with the charge. Under ... |
2407.09586 | Abhik Kumar Sanyal Dr. | Dalia Saha, Jyoti Prasad Saha, Abhik kumar sanyal | Why scalar field is indispensable in Teleparallel Gravity theory? | 14 pages, 4 figures | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Teleparallel gravity theories were proposed as alternatives to the dark
energy and modified theories of gravity. However, both the metric and symmetric
teleparallel gravity theories have been found to have serious pathologies, such
as coupling issues and Ostrogradski's instability leading to ghost degrees of
freedom.... | [
{
"created": "Fri, 12 Jul 2024 14:53:58 GMT",
"version": "v1"
}
] | 2024-07-16 | [
[
"Saha",
"Dalia",
""
],
[
"Saha",
"Jyoti Prasad",
""
],
[
"sanyal",
"Abhik kumar",
""
]
] | Teleparallel gravity theories were proposed as alternatives to the dark energy and modified theories of gravity. However, both the metric and symmetric teleparallel gravity theories have been found to have serious pathologies, such as coupling issues and Ostrogradski's instability leading to ghost degrees of freedom. I... |
gr-qc/0301039 | Oleg Karpov | O.B. Karpov | Eternal expansion of closed universe | 4 pages, LaTeX2e, 4 eps figures, to appear in Grav. Cosmol | Grav.Cosmol. 9 (2003) 211-213 | null | null | gr-qc astro-ph | null | The expansion of the closed two-component universe has been considered. The
potential barrier of the expansion has been investigated and its overcoming
condition has been obtained. The restrictions on the Friedmann integrals,
cosmological constant and density parameters have been analyzed. The
phase-space has been co... | [
{
"created": "Fri, 10 Jan 2003 14:27:43 GMT",
"version": "v1"
}
] | 2009-09-29 | [
[
"Karpov",
"O. B.",
""
]
] | The expansion of the closed two-component universe has been considered. The potential barrier of the expansion has been investigated and its overcoming condition has been obtained. The restrictions on the Friedmann integrals, cosmological constant and density parameters have been analyzed. The phase-space has been cons... |
2310.16067 | Soichiro Kuwahara | Soichiro Kuwahara, Kipp Cannon | Development and Application of a Detection System for a Novel Class of
Gravitational-Wave Transients | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We previously described the development of a detection system for a novel
class of transient gravitational-wave sources taking the form of Cherenkov-like
bursts. Here, we have applied the system to the data of the LIGO/Virgo/KAGRA O3
science run, and report a null result. The ad hoc waveform model is motivated
by the... | [
{
"created": "Tue, 24 Oct 2023 12:16:14 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Oct 2023 12:19:39 GMT",
"version": "v2"
}
] | 2023-10-31 | [
[
"Kuwahara",
"Soichiro",
""
],
[
"Cannon",
"Kipp",
""
]
] | We previously described the development of a detection system for a novel class of transient gravitational-wave sources taking the form of Cherenkov-like bursts. Here, we have applied the system to the data of the LIGO/Virgo/KAGRA O3 science run, and report a null result. The ad hoc waveform model is motivated by the c... |
gr-qc/0107079 | Sergey Vyatchanin | V. B. Braginsky, S. E. Strigin and S. P. Vyatchanin | Parametric Oscillatory Instability in Fabry-Perot (FP) Interferometer | 6 pages, Latex, corrected typos | Phys.Lett. A287 (2001) 331-338 | 10.1016/S0375-9601(01)00510-2 | null | gr-qc | null | We present an approximate analysis of a nonlinear effect of parametric
oscillatory instability in FP interferometer. The basis for this effect is the
excitation of the additional (Stokes) optical mode and of the mirror's elastic
mode when the optical energy stored in the FP resonator main mode exceeds the
certain thr... | [
{
"created": "Tue, 24 Jul 2001 13:46:27 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Aug 2001 12:13:21 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Braginsky",
"V. B.",
""
],
[
"Strigin",
"S. E.",
""
],
[
"Vyatchanin",
"S. P.",
""
]
] | We present an approximate analysis of a nonlinear effect of parametric oscillatory instability in FP interferometer. The basis for this effect is the excitation of the additional (Stokes) optical mode and of the mirror's elastic mode when the optical energy stored in the FP resonator main mode exceeds the certain thres... |
gr-qc/0702122 | Jannie Leach | Jannie A. Leach, Peter K.S. Dunsby and Sante Carloni | An analysis of the shear dynamics in Bianchi I cosmologies with
$R^n$-gravity | 4 pages, 2 figures; to appear in the proceedings of the MG11 | null | null | null | gr-qc | null | We consider the case of $R^n$-gravity and perform a detailed analysis of the
dynamics in Bianchi I cosmologies which exhibit {\it local rotational symmetry}
(LRS). We find exact solutions and study their behaviour and stability in terms
of the values of the parameter $n$. In particular, we found a set of cosmic
histo... | [
{
"created": "Fri, 23 Feb 2007 12:30:01 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Leach",
"Jannie A.",
""
],
[
"Dunsby",
"Peter K. S.",
""
],
[
"Carloni",
"Sante",
""
]
] | We consider the case of $R^n$-gravity and perform a detailed analysis of the dynamics in Bianchi I cosmologies which exhibit {\it local rotational symmetry} (LRS). We find exact solutions and study their behaviour and stability in terms of the values of the parameter $n$. In particular, we found a set of cosmic histori... |
0706.0991 | Adamantios Stavridis | Andrea Passamonti, Adamantios Stavridis, Kostas Kokkotas | Non-axisymmetric oscillations of differentially rotating relativistic
stars | 17 pages, 7 figures, 8 tables, version accepted for publication to
Phys. Rev. D | Phys.Rev.D77:024029,2008 | 10.1103/PhysRevD.77.024029 | null | gr-qc astro-ph | null | Non-axisymmetric oscillations of differentially rotating stars are studied
using both slow rotation and Cowling approximation. The equilibrium stellar
models are relativistic polytropes where differential rotation is described by
the relativistic j-constant rotation law. The oscillation spectrum is studied
versus thr... | [
{
"created": "Thu, 7 Jun 2007 12:11:41 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Dec 2007 09:25:42 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Passamonti",
"Andrea",
""
],
[
"Stavridis",
"Adamantios",
""
],
[
"Kokkotas",
"Kostas",
""
]
] | Non-axisymmetric oscillations of differentially rotating stars are studied using both slow rotation and Cowling approximation. The equilibrium stellar models are relativistic polytropes where differential rotation is described by the relativistic j-constant rotation law. The oscillation spectrum is studied versus three... |
2208.12162 | Soham Sen | Soham Sen, Sukanta Bhattacharyya and Sunandan Gangopadhyay | Path integral action for a resonant detector of gravitational waves in
the generalized uncertainty principle framework | This manuscript has been accepted for publication in "Universe";
Special Edition: "Quantum Gravity Phenomenology" | Universe 2022, 8(9), 450 | 10.3390/universe8090450 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | The Heisenberg uncertainty principle gets modified by the introduction of an
observer independent minimal length. In this work we have considered the
resonant gravitational wave detector in the modified uncertainty principle
framework where we have used the position momentum uncertainty relation with a
quadratic orde... | [
{
"created": "Thu, 25 Aug 2022 15:34:50 GMT",
"version": "v1"
}
] | 2022-09-02 | [
[
"Sen",
"Soham",
""
],
[
"Bhattacharyya",
"Sukanta",
""
],
[
"Gangopadhyay",
"Sunandan",
""
]
] | The Heisenberg uncertainty principle gets modified by the introduction of an observer independent minimal length. In this work we have considered the resonant gravitational wave detector in the modified uncertainty principle framework where we have used the position momentum uncertainty relation with a quadratic order ... |
1401.0835 | Mehedi Kalam | Mehedi Kalam, Farook Rahaman, Sajahan Molla, Md. Abdul Kayum Jafry and
Sk. Monowar Hossein | Analytical model of strange star in the low-mass X-ray binary 4U 1820-30 | Some revisions have been made. Accepted in Eur.Phys.J.C | null | 10.1140/epjc/s10052-014-2971-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we have proposed a model for a realistic strange star under
Tolman VII metric\citep{Tolman1939}. Here the field equations are reduced to a
system of three algebraic equations for anisotropic pressure. Mass, central
density and surface density of strange star in the low-mass X-ray binary 4U
1820-30 ha... | [
{
"created": "Sat, 4 Jan 2014 18:30:39 GMT",
"version": "v1"
},
{
"created": "Sat, 19 Jul 2014 05:02:08 GMT",
"version": "v2"
}
] | 2015-06-18 | [
[
"Kalam",
"Mehedi",
""
],
[
"Rahaman",
"Farook",
""
],
[
"Molla",
"Sajahan",
""
],
[
"Jafry",
"Md. Abdul Kayum",
""
],
[
"Hossein",
"Sk. Monowar",
""
]
] | In this article, we have proposed a model for a realistic strange star under Tolman VII metric\citep{Tolman1939}. Here the field equations are reduced to a system of three algebraic equations for anisotropic pressure. Mass, central density and surface density of strange star in the low-mass X-ray binary 4U 1820-30 has ... |
1903.03173 | Andrei Lebed G | Andrei G. Lebed | Inequivalence between gravitational mass and energy of a composite
quantum body in general relativity | Submitted to Physical Review Letters | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the so-called semiclassical variant of general relativity, where
gravitational field is not quantized but matter is quantized, for the simplest
composite quantum body - a hydrogen atom. We create a stationary electron
quantum state in the atom in the absence of gravitational field and study its
time evolu... | [
{
"created": "Thu, 7 Mar 2019 20:31:16 GMT",
"version": "v1"
}
] | 2019-03-11 | [
[
"Lebed",
"Andrei G.",
""
]
] | We consider the so-called semiclassical variant of general relativity, where gravitational field is not quantized but matter is quantized, for the simplest composite quantum body - a hydrogen atom. We create a stationary electron quantum state in the atom in the absence of gravitational field and study its time evoluti... |
2402.10706 | Martin Teuscher | Martin Teuscher, Aur\'elien Barrau, Killian Martineau | Elementary considerations on gravitational waves from hyperbolic
encounters | 10 pages, 4 figures | null | null | null | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the main properties of gravitational waves (GWs) emitted by
transient hyperbolic encounters of black holes. We begin by building the set of
basic variables most relevant to setting our problem. After exposing the ranges
of masses and eccentricities accessible at a given GW frequency, we analyze the
depende... | [
{
"created": "Fri, 16 Feb 2024 14:05:25 GMT",
"version": "v1"
}
] | 2024-02-19 | [
[
"Teuscher",
"Martin",
""
],
[
"Barrau",
"Aurélien",
""
],
[
"Martineau",
"Killian",
""
]
] | We examine the main properties of gravitational waves (GWs) emitted by transient hyperbolic encounters of black holes. We begin by building the set of basic variables most relevant to setting our problem. After exposing the ranges of masses and eccentricities accessible at a given GW frequency, we analyze the dependenc... |
1905.05378 | Ernesto Contreras | G. Abell\'an, P. Bargue\~no, E. Contreras and E. Fuenmayor | All static spherically symmetric anisotropic solutions for general
relativistic polytropes | Figures added, new section added | Int.J.Mod.Phys.D 29 (2020) 12, 2050082 | 10.1142/S0218271820500820 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An algorithm presented by K. Lake to obtain all static spherically symmetric
perfect fluid solutions was recently extended by L. Herrera to the interesting
case of locally anisotropic fluids (principal stresses unequal). In this work
we develop an algorithm to construct all static spherically symmetric
anisotropic so... | [
{
"created": "Tue, 14 May 2019 03:35:23 GMT",
"version": "v1"
},
{
"created": "Wed, 15 May 2019 15:40:35 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Oct 2020 02:40:06 GMT",
"version": "v3"
}
] | 2020-10-28 | [
[
"Abellán",
"G.",
""
],
[
"Bargueño",
"P.",
""
],
[
"Contreras",
"E.",
""
],
[
"Fuenmayor",
"E.",
""
]
] | An algorithm presented by K. Lake to obtain all static spherically symmetric perfect fluid solutions was recently extended by L. Herrera to the interesting case of locally anisotropic fluids (principal stresses unequal). In this work we develop an algorithm to construct all static spherically symmetric anisotropic solu... |
1508.01947 | Philipp Hoehn | Bianca Dittrich, Philipp A. Hoehn, Tim A. Koslowski and Mike I. Nelson | Chaos, Dirac observables and constraint quantization | 48 pages, 9 figures, lots of discussion | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There is good evidence that full general relativity is non-integrable or even
chaotic. We point out the severe repercussions: differentiable Dirac
observables and a reduced phase space do not exist in non-integrable
constrained systems and are thus unlikely to occur in a generic general
relativistic context. Instead,... | [
{
"created": "Sat, 8 Aug 2015 19:02:58 GMT",
"version": "v1"
}
] | 2015-08-11 | [
[
"Dittrich",
"Bianca",
""
],
[
"Hoehn",
"Philipp A.",
""
],
[
"Koslowski",
"Tim A.",
""
],
[
"Nelson",
"Mike I.",
""
]
] | There is good evidence that full general relativity is non-integrable or even chaotic. We point out the severe repercussions: differentiable Dirac observables and a reduced phase space do not exist in non-integrable constrained systems and are thus unlikely to occur in a generic general relativistic context. Instead, g... |
0710.0966 | Christian Boehmer | Christian G. Boehmer, Tiberiu Harko, Francisco S. N. Lobo | Generalized virial theorem in f(R) gravity | 12 pages; references added, minor changes, accepted for publication
in JCAP | JCAP0803:024,2008 | 10.1088/1475-7516/2008/03/024 | null | gr-qc astro-ph hep-th | null | We generalize the virial theorem in f(R) modified gravity using the
collisionless Boltzmann equation. We find supplementary geometric terms in the
modified Einstein equation providing an effective contribution to the
gravitational energy. The total virial mass is proportional to the effective
mass associated with the... | [
{
"created": "Thu, 4 Oct 2007 10:08:50 GMT",
"version": "v1"
},
{
"created": "Sat, 1 Mar 2008 12:19:09 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Lobo",
"Francisco S. N.",
""
]
] | We generalize the virial theorem in f(R) modified gravity using the collisionless Boltzmann equation. We find supplementary geometric terms in the modified Einstein equation providing an effective contribution to the gravitational energy. The total virial mass is proportional to the effective mass associated with the n... |
0807.1179 | Jeandrew Brink | Jeandrew Brink | Spacetime Encodings II - Pictures of Integrability | 11 pages, 10 figures | Phys.Rev.D78:102002,2008 | 10.1103/PhysRevD.78.102002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I visually explore the features of geodesic orbits in arbitrary stationary
axisymmetric vacuum (SAV) spacetimes that are constructed from a complex Ernst
potential. Some of the geometric features of integrable and chaotic orbits are
highlighted. The geodesic problem for these SAV spacetimes is rewritten as a
two degr... | [
{
"created": "Tue, 8 Jul 2008 06:30:08 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Brink",
"Jeandrew",
""
]
] | I visually explore the features of geodesic orbits in arbitrary stationary axisymmetric vacuum (SAV) spacetimes that are constructed from a complex Ernst potential. Some of the geometric features of integrable and chaotic orbits are highlighted. The geodesic problem for these SAV spacetimes is rewritten as a two degree... |
1905.01733 | Seyed Ali Hosseini Mansoori | Seyed Ali Hosseini Mansoori and Behrouz Mirza | Geometrothermodynamics as a singular conformal thermodynamic geometry | Accepted by Physics Letters B (PLB), The Title has been changed in
new version, 7 pages, 4 figures | Phys. Lett. B 799, 135040 (2019) | 10.1016/j.physletb.2019.135040 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter, we first redefine our formalism of the thermodynamic geometry
introduced in [1,2] by changing coordinates of the thermodynamic space by means
of Jacobian matrices. We then show that the geometrothermodynamics (GTD) is
conformally related to this new formalism of the thermodynamic geometry. This
confor... | [
{
"created": "Sun, 5 May 2019 18:51:31 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Oct 2019 11:17:01 GMT",
"version": "v2"
}
] | 2020-03-17 | [
[
"Mansoori",
"Seyed Ali Hosseini",
""
],
[
"Mirza",
"Behrouz",
""
]
] | In this letter, we first redefine our formalism of the thermodynamic geometry introduced in [1,2] by changing coordinates of the thermodynamic space by means of Jacobian matrices. We then show that the geometrothermodynamics (GTD) is conformally related to this new formalism of the thermodynamic geometry. This conforma... |
gr-qc/9601002 | Roland Puntigam | Efstratios Tsantilis, Roland A. Puntigam, and Friedrich W. Hehl
(Institute for Theoretical Physics, University of Cologne, Germany) | A quadratic curvature Lagrangian of Paw{\l}owski and R\c{a}czka: a
finger exercise with MathTensor | 10 pages, no figure. To appear in Hehl, F.W., Puntigam, R.A., Ruder,
H. (eds.): Relativity and Scientific Computing -- Computer Algebra, Numerics,
Visualization. Springer, Berlin, 1996 | null | null | Cologne-thp-1996-H1 | gr-qc hep-th | null | Recently Paw{\l}owski and R\c{a}czka proposed a unified model for the
fundamental interactions which does not contain a physical Higgs field. The
gravitational field equation of their model is rederived under heavy use of the
computer algebra system Mathematica and its package MathTensor.
| [
{
"created": "Tue, 2 Jan 1996 19:26:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Tsantilis",
"Efstratios",
"",
"Institute for Theoretical Physics, University of Cologne, Germany"
],
[
"Puntigam",
"Roland A.",
"",
"Institute for Theoretical Physics, University of Cologne, Germany"
],
[
"Hehl",
"Friedrich W.",
"",
"Institute for Theoretic... | Recently Paw{\l}owski and R\c{a}czka proposed a unified model for the fundamental interactions which does not contain a physical Higgs field. The gravitational field equation of their model is rederived under heavy use of the computer algebra system Mathematica and its package MathTensor. |
2208.00696 | Yasutaka Koga | Yasutaka Koga, Tomohiro Harada, Yuichiro Tada, Shuichiro Yokoyama,
Chul-Moon Yoo | Effective inspiral spin distribution of primordial black hole binaries | 13 pages, 5 figures | null | 10.3847/1538-4357/ac93f1 | RUP-22-16 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the probability distribution of the effective inspiral spin,
the mass ratio, and the chirp mass of primordial black hole (PBH) binaries,
incorporating the effect of the critical phenomena of gravitational collapse.
As a leading order estimation, each binary is assumed to be formed from two
PBHs that ar... | [
{
"created": "Mon, 1 Aug 2022 09:11:56 GMT",
"version": "v1"
}
] | 2022-11-09 | [
[
"Koga",
"Yasutaka",
""
],
[
"Harada",
"Tomohiro",
""
],
[
"Tada",
"Yuichiro",
""
],
[
"Yokoyama",
"Shuichiro",
""
],
[
"Yoo",
"Chul-Moon",
""
]
] | We investigate the probability distribution of the effective inspiral spin, the mass ratio, and the chirp mass of primordial black hole (PBH) binaries, incorporating the effect of the critical phenomena of gravitational collapse. As a leading order estimation, each binary is assumed to be formed from two PBHs that are ... |
2206.00458 | Rakshit Vyas | Rakshit P. Vyas and Mihir J. Joshi | The Barbero-Immirzi Parameter: An Enigmatic Parameter of Loop Quantum
Gravity | 29 pages, 3 figure, 1 table | Physics 2022, 4(4), 1094-1116; | 10.3390/physics4040072 | Physics-1859470 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Barbero-Immirzi parameter ($\gamma$) is introduced in loop quantum
gravity (LQG) whose physical significance is still a biggest open question;
because of its profound traits. In some cases, it is real-valued; while, it is
complex-valued in other cases. This parameter emerges out in the process of
denoting a Loren... | [
{
"created": "Tue, 31 May 2022 11:39:47 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Aug 2022 10:12:18 GMT",
"version": "v2"
}
] | 2022-09-22 | [
[
"Vyas",
"Rakshit P.",
""
],
[
"Joshi",
"Mihir J.",
""
]
] | The Barbero-Immirzi parameter ($\gamma$) is introduced in loop quantum gravity (LQG) whose physical significance is still a biggest open question; because of its profound traits. In some cases, it is real-valued; while, it is complex-valued in other cases. This parameter emerges out in the process of denoting a Lorentz... |
gr-qc/0101062 | Mauricio Bellini | Mauricio Bellini (IFM, Universidad Michoacana de San Nicolas de
Hidalgo) | Fresh inflation: a warm inflationary model from a zero temperature
initial state | 11 pages, no figures, to be published in Phys. Rev. D | Phys.Rev. D63 (2001) 123510 | 10.1103/PhysRevD.63.123510 | null | gr-qc hep-ph | null | A two-components mixture fluid which complies with the gamma law is
considered in the framework of inflation with finite temperature. The model is
developed for a quartic scalar potential without symmetry breaking. The
radiation energy density is assumed to be zero when inflation starts and
remains below the GUT temp... | [
{
"created": "Tue, 16 Jan 2001 17:18:55 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Feb 2001 18:17:20 GMT",
"version": "v2"
},
{
"created": "Mon, 5 Mar 2001 19:35:45 GMT",
"version": "v3"
}
] | 2009-11-07 | [
[
"Bellini",
"Mauricio",
"",
"IFM, Universidad Michoacana de San Nicolas de\n Hidalgo"
]
] | A two-components mixture fluid which complies with the gamma law is considered in the framework of inflation with finite temperature. The model is developed for a quartic scalar potential without symmetry breaking. The radiation energy density is assumed to be zero when inflation starts and remains below the GUT temper... |
1703.00624 | Krishnamohan Parattu | Sumanta Chakraborty, Krishnamohan Parattu and T. Padmanabhan | A Novel Derivation of the Boundary Term for the Action in
Lanczos-Lovelock Gravity | 28 pages | Gen Relativ Gravit (2017) 49:121 | 10.1007/s10714-017-2289-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a novel derivation of the boundary term for the action in
Lanczos-Lovelock gravity, starting from the boundary contribution in the
variation of the Lanczos-Lovelock action. The derivation presented here is
straightforward, i.e., one starts from the Lanczos-Lovelock action principle
and the action itself di... | [
{
"created": "Thu, 2 Mar 2017 05:16:57 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Aug 2017 17:04:17 GMT",
"version": "v2"
}
] | 2017-08-25 | [
[
"Chakraborty",
"Sumanta",
""
],
[
"Parattu",
"Krishnamohan",
""
],
[
"Padmanabhan",
"T.",
""
]
] | We present a novel derivation of the boundary term for the action in Lanczos-Lovelock gravity, starting from the boundary contribution in the variation of the Lanczos-Lovelock action. The derivation presented here is straightforward, i.e., one starts from the Lanczos-Lovelock action principle and the action itself dict... |
gr-qc/9902008 | Shahar Hod | Shahar Hod and Tsvi Piran | The Inner Structure of Black Holes | This essay received the Second Prize from the Gravity Research
Foundation 1998 | Gen.Rel.Grav. 30 (1998) 1555 | 10.1023/A:1026654519980 | null | gr-qc | null | We study the gravitational collapse of a self-gravitating charged
scalar-field. Starting with a regular spacetime, we follow the evolution
through the formation of an apparent horizon, a Cauchy horizon and a final
central singularity. We find a null, weak, mass-inflation singularity along the
Cauchy horizon, which is... | [
{
"created": "Tue, 2 Feb 1999 08:59:39 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Hod",
"Shahar",
""
],
[
"Piran",
"Tsvi",
""
]
] | We study the gravitational collapse of a self-gravitating charged scalar-field. Starting with a regular spacetime, we follow the evolution through the formation of an apparent horizon, a Cauchy horizon and a final central singularity. We find a null, weak, mass-inflation singularity along the Cauchy horizon, which is a... |
gr-qc/0701062 | Earnest Harrison | Earnest Harrison | Embedding the Schwarzschild Ideal Fluid Metric | 5 pages, 9 figures, minor correction | null | null | null | gr-qc | null | Certain semi-Riemannian metrics can be decomposed into a Riemannian part and
an isochronal part. The properties of such metrics are particularly easy to
visualize in a coordinate-free way, using isometric embedding. We present such
an isochronal, isometric embedding of the well known Schwarzschild ideal fluid
metric ... | [
{
"created": "Thu, 11 Jan 2007 14:50:31 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Jan 2007 20:50:11 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Harrison",
"Earnest",
""
]
] | Certain semi-Riemannian metrics can be decomposed into a Riemannian part and an isochronal part. The properties of such metrics are particularly easy to visualize in a coordinate-free way, using isometric embedding. We present such an isochronal, isometric embedding of the well known Schwarzschild ideal fluid metric in... |
1207.3164 | Pin Yu | Junbin Li and Pin Yu | Construction of Cauchy Data of Vacuum Einstein field equations Evolving
to Black Holes | 63 pages, 1 figure | null | null | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show the existence of complete, asymptotically flat Cauchy initial data
for the vacuum Einstein field equations, free of trapped surfaces, whose future
development must admit a trapped surface. Moreover, the datum is exactly a
constant time slice in Minkowski space-time inside and exactly a constant time
slice in ... | [
{
"created": "Fri, 13 Jul 2012 08:26:54 GMT",
"version": "v1"
}
] | 2012-07-16 | [
[
"Li",
"Junbin",
""
],
[
"Yu",
"Pin",
""
]
] | We show the existence of complete, asymptotically flat Cauchy initial data for the vacuum Einstein field equations, free of trapped surfaces, whose future development must admit a trapped surface. Moreover, the datum is exactly a constant time slice in Minkowski space-time inside and exactly a constant time slice in Ke... |
gr-qc/0208013 | G. Papini | G. Papini, G. Scarpetta, V. Bozza, A. Feoli, G. Lambiase | Radiation Bursts from Particles in the Field of Compact, Impenetrable,
Astrophysical Objects | 11 pages, three figures | Phys.Lett. A300 (2002) 603-610 | 10.1016/S0375-9601(02)00886-1 | null | gr-qc | null | The radiation emitted by charged, scalar particles in a Schwarzschild field
with maximal acceleration corrections is calculated classically and in the tree
approximation of quantum field theory. In both instances the particles emit
radiation that has characteristics similar to those of gamma-ray bursters.
| [
{
"created": "Tue, 6 Aug 2002 01:44:50 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Papini",
"G.",
""
],
[
"Scarpetta",
"G.",
""
],
[
"Bozza",
"V.",
""
],
[
"Feoli",
"A.",
""
],
[
"Lambiase",
"G.",
""
]
] | The radiation emitted by charged, scalar particles in a Schwarzschild field with maximal acceleration corrections is calculated classically and in the tree approximation of quantum field theory. In both instances the particles emit radiation that has characteristics similar to those of gamma-ray bursters. |
2301.05778 | Conner Dailey | Conner Dailey, Niayesh Afshordi, Erik Schnetter | Reflecting boundary conditions in numerical relativity as a model for
black hole echoes | 12 pages, 6 figures, updated to final published version | Classical and Quantum Gravity, 40, 2023, 195007 | 10.1088/1361-6382/acde2f | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, there has been much interest in black hole echoes, based on the
idea that there may be some mechanism (e.g., from quantum gravity) that
waves/fields falling into a black hole could partially reflect off of an
interface before reaching the horizon. There does not seem to be a good
understanding of how to pro... | [
{
"created": "Fri, 13 Jan 2023 22:37:42 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Sep 2023 15:26:10 GMT",
"version": "v2"
}
] | 2023-10-03 | [
[
"Dailey",
"Conner",
""
],
[
"Afshordi",
"Niayesh",
""
],
[
"Schnetter",
"Erik",
""
]
] | Recently, there has been much interest in black hole echoes, based on the idea that there may be some mechanism (e.g., from quantum gravity) that waves/fields falling into a black hole could partially reflect off of an interface before reaching the horizon. There does not seem to be a good understanding of how to prope... |
1101.1514 | Luis Herrera | L. Herrera | Physical causes of energy-density inhomogenization and stability of
energy-density homogeneity in relativistic self--gravitating fluids | 9 pages Revtex. Some changes in the Introduction to fit the version
published in Int. J. Mod. Phys. D. Some typos corrected | Int. J. Mod. Phys. D. 20, 1689 (2011) | 10.1142/S0218271811019748 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We identify the factors responsible for the appearance of energy-density
inhomogeneities in a self-gravitating fluid, and describe the evolution of
those factors from an initially homogeneous distribution. It is shown that a
specific combination of the Weyl tensor and/or local anisotropy of pressure
and/or dissipativ... | [
{
"created": "Fri, 7 Jan 2011 20:03:03 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Jun 2011 09:23:18 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Sep 2011 08:41:58 GMT",
"version": "v3"
}
] | 2015-05-20 | [
[
"Herrera",
"L.",
""
]
] | We identify the factors responsible for the appearance of energy-density inhomogeneities in a self-gravitating fluid, and describe the evolution of those factors from an initially homogeneous distribution. It is shown that a specific combination of the Weyl tensor and/or local anisotropy of pressure and/or dissipative ... |
1711.00361 | Jorge Alfaro | Jorge Alfaro and Pablo Gonz\'alez | Non-Relativistic $\tilde{\delta}$ Gravity: A Description of Dark Matter | latex 21 pages, 3 figures. arXiv admin note: substantial text overlap
with arXiv:1704.02888, arXiv:1711.00360 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | $\tilde{\delta}$ Gravity is a gravitational field model, where the geometry
is governed by two symmetric tensors, $g_{\mu \nu}$ and $\tilde{g}_{\mu \nu}$,
and new matter fields ($\tilde{\delta}$ Matter fields) are added to the
original matter fields. These new components appear motivated by a new
symmetry, called $\t... | [
{
"created": "Tue, 31 Oct 2017 02:00:56 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Dec 2017 03:09:18 GMT",
"version": "v2"
}
] | 2017-12-08 | [
[
"Alfaro",
"Jorge",
""
],
[
"González",
"Pablo",
""
]
] | $\tilde{\delta}$ Gravity is a gravitational field model, where the geometry is governed by two symmetric tensors, $g_{\mu \nu}$ and $\tilde{g}_{\mu \nu}$, and new matter fields ($\tilde{\delta}$ Matter fields) are added to the original matter fields. These new components appear motivated by a new symmetry, called $\til... |
1301.2769 | Javad Taghizadeh firouzjaee | J. T. Firouzjaee | The holographic bound in the scalar-tensor and $f(R)$ gravities | accepted in European Physical Journal C (epjc), a section added to
the paper | null | 10.1140/epjc/s10052-013-2595-3 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/3.0/ | The holographic bound has been extended to the different theory of gravities
such as scalar-tensor gravity and $f(R)$ gravity according to the Noether
charge definition of the entropy for a black hole surface. We have introduced
some popular examples of the flat FRW cosmology in order to investigate
holographic bound... | [
{
"created": "Sun, 13 Jan 2013 12:32:06 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Sep 2013 12:06:34 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Firouzjaee",
"J. T.",
""
]
] | The holographic bound has been extended to the different theory of gravities such as scalar-tensor gravity and $f(R)$ gravity according to the Noether charge definition of the entropy for a black hole surface. We have introduced some popular examples of the flat FRW cosmology in order to investigate holographic bound i... |
gr-qc/0205079 | Steven Detweiler | Steven Detweiler, Eirini Messaritaki and Bernard F. Whiting | Self-force of a scalar field for circular orbits about a Schwarzschild
black hole | RevTex, 31 pages, 1 figure, modified abstract, more details of
numerical methods | Phys.Rev.D67:104016,2003 | 10.1103/PhysRevD.67.104016 | null | gr-qc | null | The foundations are laid for the numerical computation of the actual
worldline for a particle orbiting a black hole and emitting gravitational
waves. The essential practicalities of this computation are here illustrated
for a scalar particle of infinitesimal size and small but finite scalar charge.
This particle devi... | [
{
"created": "Mon, 20 May 2002 19:50:02 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Feb 2003 19:38:57 GMT",
"version": "v2"
}
] | 2010-05-12 | [
[
"Detweiler",
"Steven",
""
],
[
"Messaritaki",
"Eirini",
""
],
[
"Whiting",
"Bernard F.",
""
]
] | The foundations are laid for the numerical computation of the actual worldline for a particle orbiting a black hole and emitting gravitational waves. The essential practicalities of this computation are here illustrated for a scalar particle of infinitesimal size and small but finite scalar charge. This particle deviat... |
0901.0034 | Bin Wang | Xi He, Bin Wang, Shao-Feng Wu, Chi-Yong Lin | Quasinormal modes of black holes absorbing dark energy | 11 pages, 5 figures, revised version, accepted for publication in
Phys.Lett.B | Phys.Lett.B673:156-160,2009 | 10.1016/j.physletb.2009.02.002 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study perturbations of black holes absorbing dark energy. Due to the
accretion of dark energy, the black hole mass changes. We observe distinct
perturbation behaviors for absorption of different forms of dark energy into
the black holes. This provides the possibility of extracting information
whether dark energy l... | [
{
"created": "Wed, 31 Dec 2008 01:30:52 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Feb 2009 05:54:34 GMT",
"version": "v2"
}
] | 2009-03-19 | [
[
"He",
"Xi",
""
],
[
"Wang",
"Bin",
""
],
[
"Wu",
"Shao-Feng",
""
],
[
"Lin",
"Chi-Yong",
""
]
] | We study perturbations of black holes absorbing dark energy. Due to the accretion of dark energy, the black hole mass changes. We observe distinct perturbation behaviors for absorption of different forms of dark energy into the black holes. This provides the possibility of extracting information whether dark energy lie... |
gr-qc/9811075 | David Salopek | D. S. Salopek | Initial Hypersurface Formulation: Hamilton-Jacobi Theory for Strongly
Coupled Gravitational Systems | 30 pages Latex (IOP) file with 2 IOP style files, to be published in
Classical and Quantum Gravity (1998) | Class.Quant.Grav. 16 (1999) 299-322 | 10.1088/0264-9381/16/1/022 | null | gr-qc astro-ph hep-th | null | Strongly coupled gravitational systems describe Einstein gravity and matter
in the limit that Newton's constant G is assumed to be very large. The
nonlinear evolution of these systems may be solved analytically in the
classical and semiclassical limits by employing a Green function analysis.
Using functional methods ... | [
{
"created": "Mon, 23 Nov 1998 02:57:03 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Nov 1998 16:09:26 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Salopek",
"D. S.",
""
]
] | Strongly coupled gravitational systems describe Einstein gravity and matter in the limit that Newton's constant G is assumed to be very large. The nonlinear evolution of these systems may be solved analytically in the classical and semiclassical limits by employing a Green function analysis. Using functional methods in... |
gr-qc/0608011 | Ozay Gurtug | Ozay Gurtug, Mustafa Halilsoy and Ozlem Unver | Reflection of electromagnetic waves from mixtures of plane gravitational
and scalar waves | 20 pages, 3 ps figures, small typos corrected, published version | Phys.Rev. D74 (2006) 044020 | 10.1103/PhysRevD.74.044020 | null | gr-qc | null | We consider colliding wave packets consisting of hybrid mixtures of
electromagnetic, gravitational and scalar waves. Irrespective of the scalar
field, the electromagnetic wave still reflects from the gravitational wave.
Some reflection processes are given for different choice of packets in which
the Coulomb-like comp... | [
{
"created": "Wed, 2 Aug 2006 06:30:07 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Aug 2006 11:45:01 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Gurtug",
"Ozay",
""
],
[
"Halilsoy",
"Mustafa",
""
],
[
"Unver",
"Ozlem",
""
]
] | We consider colliding wave packets consisting of hybrid mixtures of electromagnetic, gravitational and scalar waves. Irrespective of the scalar field, the electromagnetic wave still reflects from the gravitational wave. Some reflection processes are given for different choice of packets in which the Coulomb-like compon... |
1808.00173 | Andronikos Paliathanasis | John D. Barrow and Andronikos Paliathanasis | Szekeres Universes with Homogeneous Scalar Fields | 10 pages, discussion improved, to appear in EPJC | null | 10.1140/epjc/s10052-018-6245-7 | null | gr-qc astro-ph.CO math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the existence of an "inflaton" described by an homogeneous scalar
field in the Szekeres cosmological metric. The gravitational field equations
are reduced to two families of solutions which describe the homogeneous
Kantowski-Sachs spacetime and an inhomogeneous FLRW(-like) spacetime with
spatial curvature... | [
{
"created": "Wed, 1 Aug 2018 05:40:37 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Sep 2018 08:55:39 GMT",
"version": "v2"
}
] | 2018-10-17 | [
[
"Barrow",
"John D.",
""
],
[
"Paliathanasis",
"Andronikos",
""
]
] | We consider the existence of an "inflaton" described by an homogeneous scalar field in the Szekeres cosmological metric. The gravitational field equations are reduced to two families of solutions which describe the homogeneous Kantowski-Sachs spacetime and an inhomogeneous FLRW(-like) spacetime with spatial curvature a... |
2401.13075 | Iain Davies | Iain Davies | The 0th and 2nd Laws of Black Hole Mechanics in Einstein-Maxwell-Scalar
Effective Field Theory | null | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There has been recent progress in extending the 0th and 2nd laws of black
hole mechanics to gravitational effective field theories (EFTs). We generalize
these results to a much larger class of EFTs describing gravity coupled to
electromagnetism and a real scalar field. We also show that the 0th law holds
for the EFT ... | [
{
"created": "Tue, 23 Jan 2024 19:58:56 GMT",
"version": "v1"
}
] | 2024-01-25 | [
[
"Davies",
"Iain",
""
]
] | There has been recent progress in extending the 0th and 2nd laws of black hole mechanics to gravitational effective field theories (EFTs). We generalize these results to a much larger class of EFTs describing gravity coupled to electromagnetism and a real scalar field. We also show that the 0th law holds for the EFT of... |
1011.3958 | Alessandro Tronconi | A. Tronconi, G. Venturi | Quantum Back-Reaction in Scale Invariant Induced Gravity Inflation | Shortened article, changed title. Accepted for publication in
Physical Review D; 10 pages, 2 figures | null | 10.1103/PhysRevD.84.063517 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A quartic, self-interacting potential in the induced gravity framework is
known to have a pure de Sitter attractor for the homogeneous mode. In order to
obtain non-zero slow roll parameters we therefore study the quantum
back-reaction of the scalar and the tensor perturbations on such a homogeneous
dynamics. The resu... | [
{
"created": "Wed, 17 Nov 2010 13:23:41 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Sep 2011 15:46:19 GMT",
"version": "v2"
}
] | 2011-09-20 | [
[
"Tronconi",
"A.",
""
],
[
"Venturi",
"G.",
""
]
] | A quartic, self-interacting potential in the induced gravity framework is known to have a pure de Sitter attractor for the homogeneous mode. In order to obtain non-zero slow roll parameters we therefore study the quantum back-reaction of the scalar and the tensor perturbations on such a homogeneous dynamics. The result... |
0705.4585 | Lars Samuelsson | Lars Samuelsson, Nils Andersson, Asimina Maniopoulou | A characteristic approach to the quasi-normal mode problem | 14 pages, 3 figures, 3 tables. v2: Minor revisions, matches published
version | Class.Quant.Grav.24:4147-4160,2007 | 10.1088/0264-9381/24/16/010 | null | gr-qc | null | In this paper we discuss a new approach to the quasinormal-mode problem in
general relativity. By combining a characteristic formulation of the
perturbation equations with the integration of a suitable phase-function for a
complex valued radial coordinate, we reformulate the standard outgoing-wave
boundary condition ... | [
{
"created": "Thu, 31 May 2007 12:21:03 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Aug 2007 10:57:20 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Samuelsson",
"Lars",
""
],
[
"Andersson",
"Nils",
""
],
[
"Maniopoulou",
"Asimina",
""
]
] | In this paper we discuss a new approach to the quasinormal-mode problem in general relativity. By combining a characteristic formulation of the perturbation equations with the integration of a suitable phase-function for a complex valued radial coordinate, we reformulate the standard outgoing-wave boundary condition as... |
1809.06119 | Lorenzo Iorio | Lorenzo Iorio | Measuring general relativistic dragging effects in the Earth's
gravitational field with ELXIS: a proposal | LaTex2e, 40 pages, 2 tables, 11 figures. Two figures and one table
added. Typo corrected (0 deg -> 90 deg) at pag. 3 of this draft and pag. 2 of
the published version. Definition of the Sun's ecliptic longitude added in
Appendix A | Class. Quant. Gravit.36:035002,2019 | 10.1088/1361-6382/aaf6d4 | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a geocentric kinematically rotating ecliptical coordinate system in
geodesic motion through the deformed spacetime of the Sun, both the longitude
of the ascending node $\Omega$ and the inclination $I$ of an artificial
satellite of the spinning Earth are affected by the post-Newtonian
gravitoelectric De Sitter and ... | [
{
"created": "Mon, 17 Sep 2018 10:32:43 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Sep 2018 06:48:22 GMT",
"version": "v2"
},
{
"created": "Thu, 20 Sep 2018 17:19:43 GMT",
"version": "v3"
},
{
"created": "Sun, 11 Nov 2018 21:25:27 GMT",
"version": "v4"
},
{
"c... | 2019-01-11 | [
[
"Iorio",
"Lorenzo",
""
]
] | In a geocentric kinematically rotating ecliptical coordinate system in geodesic motion through the deformed spacetime of the Sun, both the longitude of the ascending node $\Omega$ and the inclination $I$ of an artificial satellite of the spinning Earth are affected by the post-Newtonian gravitoelectric De Sitter and gr... |
gr-qc/0301016 | Dejan Stojkovic | Valeri Frolov and Dejan Stojkovic | Particle and light motion in a space-time of a five-dimensional rotating
black hole | Added discussion about (non)existence of stable circular orbits.
Accepted for publication in Phys. Rev. D | Phys.Rev. D68 (2003) 064011 | 10.1103/PhysRevD.68.064011 | null | gr-qc hep-th | null | We study motion of particles and light in a space-time of a 5-dimensional
rotating black hole. We demonstrate that the Myers-Perry metric describing such
a black hole in addition to three Killing vectors possesses also a Killing
tensor. As a result, the Hamilton-Jacobi equations of motion allow a separation
of variab... | [
{
"created": "Mon, 6 Jan 2003 18:01:20 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jan 2003 01:17:39 GMT",
"version": "v2"
},
{
"created": "Thu, 7 Aug 2003 03:19:40 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Frolov",
"Valeri",
""
],
[
"Stojkovic",
"Dejan",
""
]
] | We study motion of particles and light in a space-time of a 5-dimensional rotating black hole. We demonstrate that the Myers-Perry metric describing such a black hole in addition to three Killing vectors possesses also a Killing tensor. As a result, the Hamilton-Jacobi equations of motion allow a separation of variable... |
gr-qc/0306089 | Igor I. Smolyaninov | Igor I. Smolyaninov, Christopher C. Davis | Surface plasmon toy-models of black holes and wormholes | 4 pages, 4 figures | null | null | null | gr-qc | null | Surface plasmons at metal interfaces are collective excitations of the
conduction electrons and the electromagnetic field. They exist in "curved
three-dimensional space-times" defined by the shape of the metal surface and
the spatial distribution of the dielectric constant near the surface. Here we
show that surface ... | [
{
"created": "Thu, 19 Jun 2003 14:21:49 GMT",
"version": "v1"
}
] | 2017-12-20 | [
[
"Smolyaninov",
"Igor I.",
""
],
[
"Davis",
"Christopher C.",
""
]
] | Surface plasmons at metal interfaces are collective excitations of the conduction electrons and the electromagnetic field. They exist in "curved three-dimensional space-times" defined by the shape of the metal surface and the spatial distribution of the dielectric constant near the surface. Here we show that surface pl... |
gr-qc/0406101 | Jyh Kuen Kao | J.-K. Kao and H. T. Cho | The Onset of Chaotic Motion of a Spinning Particle around the
Schwarzchild Black Hole | 14 pages in Revtex4 style, 9 figures(eps files) | Phys.Lett. A336 (2005) 159-166 | 10.1016/j.physleta.2005.01.020 | null | gr-qc | null | In the Schwarzchild black hole spacetime, we show that chaotic motion can be
triggered by the spin of a particle. Taking the spin of the particle as a
perturbation and using the Melnikov method, we find that the perturbed stable
and unstable orbits are entangled with each other and that illustrates the
onset of chaot... | [
{
"created": "Fri, 25 Jun 2004 02:38:16 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Kao",
"J. -K.",
""
],
[
"Cho",
"H. T.",
""
]
] | In the Schwarzchild black hole spacetime, we show that chaotic motion can be triggered by the spin of a particle. Taking the spin of the particle as a perturbation and using the Melnikov method, we find that the perturbed stable and unstable orbits are entangled with each other and that illustrates the onset of chaotic... |
1510.02351 | Behnam Pourhassan | J. Sadeghi, B. Pourhassan, A.S. Kubeka, M. Rostami | Logarithmic corrected Polynomial $f(R)$ inflation mimicking a
cosmological constant | 15 pages, 9 figures | International Journal of Modern Physics D 25 (2016) 1650077 | 10.1142/S0218271816500772 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we consider an inflationary model of $f(R)$ gravity with
polynomial form plus logarithmic term. We calculate some cosmological
parameters and compare our results with the Plank 2015 data. We find that
presence of both logarithmic and polynomial corrections are necessary to yield
slow-roll condition. Al... | [
{
"created": "Wed, 7 Oct 2015 13:53:22 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Feb 2016 13:03:30 GMT",
"version": "v2"
}
] | 2016-06-14 | [
[
"Sadeghi",
"J.",
""
],
[
"Pourhassan",
"B.",
""
],
[
"Kubeka",
"A. S.",
""
],
[
"Rostami",
"M.",
""
]
] | In this paper, we consider an inflationary model of $f(R)$ gravity with polynomial form plus logarithmic term. We calculate some cosmological parameters and compare our results with the Plank 2015 data. We find that presence of both logarithmic and polynomial corrections are necessary to yield slow-roll condition. Also... |
2207.00443 | Guillermo Lara | Enrico Barausse, Miguel Bezares, Marco Crisostomi and Guillermo Lara | The well-posedness of the Cauchy problem for self-interacting vector
fields | 3 pages, no figures, Minor changes, Journal Version | JCAP11(2022)050 | 10.1088/1475-7516/2022/11/050 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We point out that the initial-value (Cauchy) problem for self-interacting
vector fields presents the same well-posedness issues as for first-order
derivative self-interacting scalar fields (often referred to as $k$-essence).
For the latter, suitable strategies have been employed in the last few years to
successfully ... | [
{
"created": "Fri, 1 Jul 2022 14:09:19 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Nov 2022 09:48:37 GMT",
"version": "v2"
}
] | 2022-11-28 | [
[
"Barausse",
"Enrico",
""
],
[
"Bezares",
"Miguel",
""
],
[
"Crisostomi",
"Marco",
""
],
[
"Lara",
"Guillermo",
""
]
] | We point out that the initial-value (Cauchy) problem for self-interacting vector fields presents the same well-posedness issues as for first-order derivative self-interacting scalar fields (often referred to as $k$-essence). For the latter, suitable strategies have been employed in the last few years to successfully ev... |
2407.07862 | H\'elo\"ise Delaporte | H\'elo\"ise Delaporte and Astrid Eichhorn | The principled-parameterized approach to gravitational collapse | v1: 37 pages with appendix and references, 13 figures, comments
welcome | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | New physics beyond General Relativity impacts black-hole spacetimes. The
effects of new physics can be investigated in a largely theory-agnostic way by
following the principled-parameterized approach. In this approach, a classical
black-hole metric is upgraded by following a set of principles, such as
regularity, i.e... | [
{
"created": "Wed, 10 Jul 2024 17:25:06 GMT",
"version": "v1"
}
] | 2024-07-11 | [
[
"Delaporte",
"Héloïse",
""
],
[
"Eichhorn",
"Astrid",
""
]
] | New physics beyond General Relativity impacts black-hole spacetimes. The effects of new physics can be investigated in a largely theory-agnostic way by following the principled-parameterized approach. In this approach, a classical black-hole metric is upgraded by following a set of principles, such as regularity, i.e.,... |
0901.3136 | Salvatore Capozziello | Salvatore Capozziello, Stefano Vignolo | On the well formulation of the Initial Value Problem of metric--affine
$f(R)$-gravity | 11 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the well formulation of the initial value problem of f(R)-gravity in
the metric-affine formalism. The problem is discussed in vacuo and in presence
of perfect-fluid matter, Klein-Gordon and Yang-Mills fields. Adopting Gaussian
normal coordinates, it can be shown that the problem is always well-formulated.
Ou... | [
{
"created": "Tue, 20 Jan 2009 20:28:13 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Feb 2009 20:53:23 GMT",
"version": "v2"
},
{
"created": "Thu, 23 Apr 2009 13:22:56 GMT",
"version": "v3"
}
] | 2009-04-23 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Vignolo",
"Stefano",
""
]
] | We study the well formulation of the initial value problem of f(R)-gravity in the metric-affine formalism. The problem is discussed in vacuo and in presence of perfect-fluid matter, Klein-Gordon and Yang-Mills fields. Adopting Gaussian normal coordinates, it can be shown that the problem is always well-formulated. Our ... |
1908.03742 | Nur Jaman | Safia Ahmad, Antonio De Felice, Nur Jaman, Sachiko Kuroyanagi and M.
Sami | Baryogenesis in the paradigm of quintessential inflation | 18 pages, 4 figures; Subsection on Sphaleron washout is added,
clarification on CPT violation included, typos corrected, revised version to
appear in PRD | Phys. Rev. D 100, 103525 (2019) | 10.1103/PhysRevD.100.103525 | YITP-19-133 | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the possibility of baryogenesis in the framework of quintessential
inflation. We focus on the model independent features of the underlying
paradigm and demonstrate that the required baryon asymmetry can successfully be
generated in this scenario. To this effect, we use the effective field theory
framework ... | [
{
"created": "Sat, 10 Aug 2019 12:20:54 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Oct 2019 12:14:20 GMT",
"version": "v2"
}
] | 2020-07-01 | [
[
"Ahmad",
"Safia",
""
],
[
"De Felice",
"Antonio",
""
],
[
"Jaman",
"Nur",
""
],
[
"Kuroyanagi",
"Sachiko",
""
],
[
"Sami",
"M.",
""
]
] | We explore the possibility of baryogenesis in the framework of quintessential inflation. We focus on the model independent features of the underlying paradigm and demonstrate that the required baryon asymmetry can successfully be generated in this scenario. To this effect, we use the effective field theory framework wi... |
gr-qc/0004056 | David Garfinkle | David Garfinkle and Robert Mann | Generalized entropy and Noether charge | 6 pages, revtex, reference corrected | Class.Quant.Grav. 17 (2000) 3317-3324 | 10.1088/0264-9381/17/16/314 | null | gr-qc | null | We find an expression for the generalized gravitational entropy of Hawking in
terms of Noether charge. As an example, the entropy of the Taub-Bolt spacetime
is calculated.
| [
{
"created": "Mon, 17 Apr 2000 22:26:55 GMT",
"version": "v1"
},
{
"created": "Thu, 11 May 2000 21:56:05 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Garfinkle",
"David",
""
],
[
"Mann",
"Robert",
""
]
] | We find an expression for the generalized gravitational entropy of Hawking in terms of Noether charge. As an example, the entropy of the Taub-Bolt spacetime is calculated. |
1404.2497 | Jie-Xiong Mo | Jie-Xiong Mo, Xiao-Xiong Zeng, Gu-Qiang Li, Xin Jiang and Wen-Biao Liu | A unified phase transition picture of the charged topological black hole
in Horava-Lifshitz gravity | 24pages,11figures | JHEP1310(2013)056 | 10.1007/JHEP10(2013)056 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Aiming at a unified phase transition picture of the charged topological black
hole in Ho\v{r}ava-Lifshitz gravity, we investigate this issue not only in
canonical ensemble with the fixed charge case but also in grand-canonical
ensemble with the fixed potential case. We firstly perform the standard
analysis of the spe... | [
{
"created": "Wed, 9 Apr 2014 14:24:07 GMT",
"version": "v1"
}
] | 2014-04-10 | [
[
"Mo",
"Jie-Xiong",
""
],
[
"Zeng",
"Xiao-Xiong",
""
],
[
"Li",
"Gu-Qiang",
""
],
[
"Jiang",
"Xin",
""
],
[
"Liu",
"Wen-Biao",
""
]
] | Aiming at a unified phase transition picture of the charged topological black hole in Ho\v{r}ava-Lifshitz gravity, we investigate this issue not only in canonical ensemble with the fixed charge case but also in grand-canonical ensemble with the fixed potential case. We firstly perform the standard analysis of the speci... |
gr-qc/0505030 | Ghanashyam Date | Ghanashyam Date | Pre-classical solutions of the vacuum Bianchi I loop quantum cosmology | 4 pages, revtex4, no figures. In version 2, reference added and minor
changes made. The final Version 3 includes additional explanations | Phys.Rev. D72 (2005) 067301 | 10.1103/PhysRevD.72.067301 | IMSc/2005/4/12 | gr-qc astro-ph hep-th | null | Loop quantization of diagonalized Bianchi class A models, leads to a partial
difference equation as the Hamiltonian constraint at the quantum level. A
criterion for testing a viable semiclassical limit has been formulated in terms
of existence of the so-called pre-classical solutions. We demonstrate the
existence of ... | [
{
"created": "Sun, 8 May 2005 05:20:08 GMT",
"version": "v1"
},
{
"created": "Fri, 13 May 2005 06:23:58 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Sep 2005 10:58:16 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Date",
"Ghanashyam",
""
]
] | Loop quantization of diagonalized Bianchi class A models, leads to a partial difference equation as the Hamiltonian constraint at the quantum level. A criterion for testing a viable semiclassical limit has been formulated in terms of existence of the so-called pre-classical solutions. We demonstrate the existence of pr... |
1411.1558 | J\"urgen Struckmeier | J\"urgen Struckmeier | General relativity as an extended canonical gauge theory | 14 pages | Phys. Rev. D 91, 085030 (2015) | 10.1103/PhysRevD.91.085030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is widely accepted that the fundamental geometrical law of nature should
follow from an action principle. The particular subset of transformations of a
system's dynamical variables that maintain the form of the action principle
comprises the group of canonical transformations. In the context of canonical
field the... | [
{
"created": "Thu, 6 Nov 2014 10:48:27 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Nov 2014 14:51:21 GMT",
"version": "v2"
},
{
"created": "Thu, 20 Nov 2014 17:31:38 GMT",
"version": "v3"
},
{
"created": "Fri, 28 Nov 2014 13:21:27 GMT",
"version": "v4"
},
{
"cr... | 2015-04-24 | [
[
"Struckmeier",
"Jürgen",
""
]
] | It is widely accepted that the fundamental geometrical law of nature should follow from an action principle. The particular subset of transformations of a system's dynamical variables that maintain the form of the action principle comprises the group of canonical transformations. In the context of canonical field theor... |
gr-qc/0512142 | Miguel Lorente | L. Bombelli (University of Mississipi, USA), M. Lorente (University of
Oviedo, Spain) | A combinatorial approach to discrete geometry | LaTeX, 5 pages with 3 figures. To appear in the Proceedings of the
XXVIII Spanish Relativity Meeting (ERE2005), 6-10 September 2005, Oviedo,
Spain | null | 10.1063/1.2218222 | null | gr-qc | null | We present a paralell approach to discrete geometry: the first one introduces
Voronoi cell complexes from statistical tessellations in order to know the mean
scalar curvature in term of the mean number of edges of a cell. The second one
gives the restriction of a graph from a regular tessellation in order to
calculat... | [
{
"created": "Fri, 23 Dec 2005 10:57:45 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Bombelli",
"L.",
"",
"University of Mississipi, USA"
],
[
"Lorente",
"M.",
"",
"University of\n Oviedo, Spain"
]
] | We present a paralell approach to discrete geometry: the first one introduces Voronoi cell complexes from statistical tessellations in order to know the mean scalar curvature in term of the mean number of edges of a cell. The second one gives the restriction of a graph from a regular tessellation in order to calculate ... |
gr-qc/9806043 | null | S. Capozziello, R. de Ritis, A.A. Marino | The effective cosmological constant in higher order gravity theories | 6 pages, Latex, ISMC'98 (Potsdam), sprocl.sty | null | null | null | gr-qc | null | An effective time--dependent cosmological constant can be recovered for
higher--order theories of gravity by extending to these ones the no--hair
conjecture. The results are applied to some specific cosmological models.
| [
{
"created": "Tue, 9 Jun 1998 07:06:42 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Capozziello",
"S.",
""
],
[
"de Ritis",
"R.",
""
],
[
"Marino",
"A. A.",
""
]
] | An effective time--dependent cosmological constant can be recovered for higher--order theories of gravity by extending to these ones the no--hair conjecture. The results are applied to some specific cosmological models. |
2305.10242 | Riccardo Della Monica | Riccardo Della Monica, Ivan de Martino | Bounding the mass of ultralight bosonic Dark Matter particles with the
motion of the S2 star around Sgr A* | 6 pages, 2 figures, 1 table. Accepted for publication on PRD.
Additional plot and related code at
http://produccioncientifica.usal.es/datos/6464bdb7a842f677be8feebc | Phys. Rev. D 108, L101303 (2023) | 10.1103/PhysRevD.108.L101303 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dark matter is undoubtedly one of the fundamental, albeit unknown, components
of the standard cosmological model. The failure to detect WIMPs, the most
promising candidate particle for cold dark matter, actually opens the way for
the exploration of viable alternatives, of which ultralight bosonic particles
with masse... | [
{
"created": "Wed, 17 May 2023 14:28:32 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Oct 2023 13:23:23 GMT",
"version": "v2"
}
] | 2023-11-13 | [
[
"Della Monica",
"Riccardo",
""
],
[
"de Martino",
"Ivan",
""
]
] | Dark matter is undoubtedly one of the fundamental, albeit unknown, components of the standard cosmological model. The failure to detect WIMPs, the most promising candidate particle for cold dark matter, actually opens the way for the exploration of viable alternatives, of which ultralight bosonic particles with masses ... |
1609.01292 | William G. Cook | William G. Cook, Ulrich Sperhake | Gravitational wave extraction in higher dimensional numerical relativity
using the Weyl tensor | 30 pages, 2 figures | null | 10.1088/1361-6382/aa5294 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves are one of the most important diagnostic tools in the
analysis of strong-gravity dynamics and have been turned into an observational
channel with LIGO's detection of GW150914. Aside from their importance in
astrophysics, black holes and compact matter distributions have also assumed a
central role... | [
{
"created": "Mon, 5 Sep 2016 20:00:05 GMT",
"version": "v1"
}
] | 2017-01-18 | [
[
"Cook",
"William G.",
""
],
[
"Sperhake",
"Ulrich",
""
]
] | Gravitational waves are one of the most important diagnostic tools in the analysis of strong-gravity dynamics and have been turned into an observational channel with LIGO's detection of GW150914. Aside from their importance in astrophysics, black holes and compact matter distributions have also assumed a central role i... |
1206.1330 | Pablo A. Rosado | Pablo A. Rosado | Gravitational wave background from rotating neutron stars | 25 pages, 15 figures | Physical Review D 86, 104007 (2012) | 10.1103/PhysRevD.86.104007 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The background of gravitational waves produced by the ensemble of rotating
neutron stars (which includes pulsars, magnetars and gravitars) is
investigated. A formula for \Omega(f) (commonly used to quantify the
background) is derived, properly taking into account the time evolution of the
systems since their formatio... | [
{
"created": "Wed, 6 Jun 2012 20:01:52 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Nov 2012 20:18:21 GMT",
"version": "v2"
}
] | 2012-11-07 | [
[
"Rosado",
"Pablo A.",
""
]
] | The background of gravitational waves produced by the ensemble of rotating neutron stars (which includes pulsars, magnetars and gravitars) is investigated. A formula for \Omega(f) (commonly used to quantify the background) is derived, properly taking into account the time evolution of the systems since their formation ... |
gr-qc/0506021 | John W. Moffat | J. W. Moffat | Scalar-Tensor-Vector Gravity Theory | 20 pages, Latex file, no figures. Revised version. Section on
cosmology added. References added. Typos corrected | JCAP 2006, 004 (2006) | 10.1088/1475-7516/2006/03/004 | null | gr-qc astro-ph | null | A covariant scalar-tensor-vector gravity theory is developed which allows the
gravitational constant $G$, a vector field coupling $\omega$ and the vector
field mass $\mu$ to vary with space and time. The equations of motion for a
test particle lead to a modified gravitational acceleration law that can fit
galaxy rota... | [
{
"created": "Fri, 3 Jun 2005 20:11:22 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Jun 2005 16:55:59 GMT",
"version": "v2"
},
{
"created": "Thu, 18 Aug 2005 22:03:51 GMT",
"version": "v3"
},
{
"created": "Fri, 2 Sep 2005 16:25:02 GMT",
"version": "v4"
},
{
"cre... | 2021-11-22 | [
[
"Moffat",
"J. W.",
""
]
] | A covariant scalar-tensor-vector gravity theory is developed which allows the gravitational constant $G$, a vector field coupling $\omega$ and the vector field mass $\mu$ to vary with space and time. The equations of motion for a test particle lead to a modified gravitational acceleration law that can fit galaxy rotati... |
0911.4456 | Alexander Shatskiy Dr. | D.I. Novikov, A.G. Doroshkevich, I.D. Novikov and A.A. Shatskiy | Stability of the Ellis-Bronnikov-Morris-Thorne Wormhole | 6 pages | Astron.Rep.53:1079-1085,2009 | 10.1134/S1063772909120014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The stability of one type of the static Ellis-Bronnikov-Morris-Thorne
wormholes is considered. These wormholes filled with radial magnetic field and
phantom dust with a negative energy density.
| [
{
"created": "Mon, 23 Nov 2009 18:19:47 GMT",
"version": "v1"
}
] | 2010-11-11 | [
[
"Novikov",
"D. I.",
""
],
[
"Doroshkevich",
"A. G.",
""
],
[
"Novikov",
"I. D.",
""
],
[
"Shatskiy",
"A. A.",
""
]
] | The stability of one type of the static Ellis-Bronnikov-Morris-Thorne wormholes is considered. These wormholes filled with radial magnetic field and phantom dust with a negative energy density. |
2004.10788 | Jansen Formiga | J. B. Formiga | The meaning of torsion in teleparallel theories | In this version I have split the paper in three parts. The first part
has already been published in Braz J Phys 51, 1823 (2021) and the second one
is currently considered for peer-review in Modern Physics Letters A, under
the title "On the teleparallel frame problem" | null | 10.1142/S0219887824502116 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The ambiguity of the Weitzenb\"ock connection and the meaning of torsion in
teleparallel theories are investigated. A new postulate is added to
teleparallel theories in order to remove the ambiguity and the inconsistencies
in the calculation of the gravitational energy-momentum tensor and the like. In
addition to the... | [
{
"created": "Wed, 22 Apr 2020 18:50:13 GMT",
"version": "v1"
},
{
"created": "Sun, 3 May 2020 11:48:54 GMT",
"version": "v2"
},
{
"created": "Sun, 29 Aug 2021 16:31:16 GMT",
"version": "v3"
},
{
"created": "Mon, 28 Feb 2022 13:43:15 GMT",
"version": "v4"
},
{
"cr... | 2024-06-04 | [
[
"Formiga",
"J. B.",
""
]
] | The ambiguity of the Weitzenb\"ock connection and the meaning of torsion in teleparallel theories are investigated. A new postulate is added to teleparallel theories in order to remove the ambiguity and the inconsistencies in the calculation of the gravitational energy-momentum tensor and the like. In addition to the k... |
gr-qc/0606067 | Alejandro Satz | Jorma Louko, Alejandro Satz | How often does the Unruh-DeWitt detector click? Regularisation by a
spatial profile | 30 pages, 1 figure. v3: Added references and minor clarifications | Class.Quant.Grav. 23 (2006) 6321-6344 | 10.1088/0264-9381/23/22/015 | null | gr-qc hep-th | null | We analyse within first-order perturbation theory the instantaneous
transition rate of an accelerated Unruh-DeWitt particle detector whose coupling
to a massless scalar field on four-dimensional Minkowski space is regularised
by a spatial profile. For the Lorentzian profile introduced by Schlicht, the
zero size limit... | [
{
"created": "Thu, 15 Jun 2006 14:20:34 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Jul 2006 18:09:05 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Oct 2006 14:28:37 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Louko",
"Jorma",
""
],
[
"Satz",
"Alejandro",
""
]
] | We analyse within first-order perturbation theory the instantaneous transition rate of an accelerated Unruh-DeWitt particle detector whose coupling to a massless scalar field on four-dimensional Minkowski space is regularised by a spatial profile. For the Lorentzian profile introduced by Schlicht, the zero size limit i... |
2303.14148 | Alexandros Karam Dr. | Ioannis D. Gialamas, Alexandros Karam, Thomas D. Pappas, and Eemeli
Tomberg | Implications of Palatini gravity for inflation and beyond | matches version published in International Journal of Geometric
Methods in Modern Physics | null | 10.1142/S0219887823300076 | null | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We present an introduction to cosmic inflation in the framework of Palatini
gravity, which provides an intriguing alternative to the conventional metric
formulation of gravity. In the latter, only the metric specifies the spacetime
geometry, whereas in the former, the metric and the spacetime connection are
independe... | [
{
"created": "Fri, 24 Mar 2023 17:00:00 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Sep 2023 10:30:55 GMT",
"version": "v2"
}
] | 2023-09-21 | [
[
"Gialamas",
"Ioannis D.",
""
],
[
"Karam",
"Alexandros",
""
],
[
"Pappas",
"Thomas D.",
""
],
[
"Tomberg",
"Eemeli",
""
]
] | We present an introduction to cosmic inflation in the framework of Palatini gravity, which provides an intriguing alternative to the conventional metric formulation of gravity. In the latter, only the metric specifies the spacetime geometry, whereas in the former, the metric and the spacetime connection are independent... |
1207.1008 | M. Farasat Shamir | M. Farasat Shamir, Adil Jhangeer, Akhlaq Ahmad Bhatti | Conserved Quantities in $f(R)$ Gravity via Noether Symmetry | 14 pages, accepted for publication in Chin. Phys. Lett | Chin. Phys. Lett. 29 (8): 080402, 2012 | 10.1088/0256-307X/29/8/080402 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is devoted to investigate $f(R)$ gravity using Noether symmetry
approach. For this purpose, we consider Friedmann Robertson-Walker (FRW)
universe and spherically symmetric spacetimes. The Noether symmetry generators
are evaluated for some specific choice of $f(R)$ models in the presence of
gauge term. Furt... | [
{
"created": "Tue, 3 Jul 2012 10:24:33 GMT",
"version": "v1"
}
] | 2012-08-03 | [
[
"Shamir",
"M. Farasat",
""
],
[
"Jhangeer",
"Adil",
""
],
[
"Bhatti",
"Akhlaq Ahmad",
""
]
] | This paper is devoted to investigate $f(R)$ gravity using Noether symmetry approach. For this purpose, we consider Friedmann Robertson-Walker (FRW) universe and spherically symmetric spacetimes. The Noether symmetry generators are evaluated for some specific choice of $f(R)$ models in the presence of gauge term. Furthe... |
2001.04795 | Norma G. Sanchez | Norma G. Sanchez (CNRS, LERMA PSL University Observatoire de Paris,
Sorbonne University) | Predictive Physics of Inflation and Grand Unification for and from the
CMB observations | White Paper presented at the CNRS IN2P3 Prospectives 2020, GT05
Steering Group {\guillemotleft} Physics of Inflation and Dark Energy
{\guillemotright}, and the GT05 IN2P3 Topical Meeting held on 9-10 December
2019 in Grenoble, France. 12 pages, no figures | International Journal of Modern Physics A Vol. 35, No. 17, 2030008
(2020) | 10.1142/S0217751X20300082 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This White Paper for the CNRS IN2P3 Prospective 2020 focuses on realistic and
timely situations of inflation in connection with the CMB, gravitational and
particle physics, adding inter-disciplinarity and unification values within a
strongly predictive physical approach. The formulation of inflation in the
Ginsburg-L... | [
{
"created": "Sat, 11 Jan 2020 18:13:13 GMT",
"version": "v1"
}
] | 2020-07-07 | [
[
"Sanchez",
"Norma G.",
"",
"CNRS, LERMA PSL University Observatoire de Paris,\n Sorbonne University"
]
] | This White Paper for the CNRS IN2P3 Prospective 2020 focuses on realistic and timely situations of inflation in connection with the CMB, gravitational and particle physics, adding inter-disciplinarity and unification values within a strongly predictive physical approach. The formulation of inflation in the Ginsburg-Lan... |
2012.06635 | Yufeng Luo | Yufeng Luo, Roland Haas, Qian Zhang, Gabrielle Allen | DataVault: A Data Storage Infrastructure for the Einstein Toolkit | 17 pages, 3 figures, 2 tables | null | 10.1088/1361-6382/abf9b5 | null | gr-qc cs.DB | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Data sharing is essential in the numerical simulations research. We introduce
a data repository, DataVault, that is designed for data sharing, search and
analysis. A comparative study of existing repositories is performed to analyze
features that are critical to a data repository. We describe the architecture,
workfl... | [
{
"created": "Fri, 11 Dec 2020 21:05:32 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Feb 2021 16:30:29 GMT",
"version": "v2"
}
] | 2021-07-07 | [
[
"Luo",
"Yufeng",
""
],
[
"Haas",
"Roland",
""
],
[
"Zhang",
"Qian",
""
],
[
"Allen",
"Gabrielle",
""
]
] | Data sharing is essential in the numerical simulations research. We introduce a data repository, DataVault, that is designed for data sharing, search and analysis. A comparative study of existing repositories is performed to analyze features that are critical to a data repository. We describe the architecture, workflow... |
gr-qc/0404055 | Olaf Dreyer | Olaf Dreyer | Ln(3) and Black Hole Entropy | Contribution to the Proceedings of the 3rd International Symposium on
Quantum Theory and Symmetries, Cincinnati, September 2003, added references
to the numerical investigations of Kerr quasinormal modes by Berti et. al | null | 10.1142/9789812702340_0075 | null | gr-qc | null | We review an idea that uses details of the quasinormal mode spectrum of a
black hole to obtain the Bekenstein-Hawking entropy of $A/4$ in Loop Quantum
Gravity. We further comment on a recent proposal concerning the quasinormal
mode spectrum of rotating black holes. We conclude by remarking on a recent
proposal to inc... | [
{
"created": "Tue, 13 Apr 2004 01:45:32 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Apr 2004 22:14:28 GMT",
"version": "v2"
}
] | 2017-08-23 | [
[
"Dreyer",
"Olaf",
""
]
] | We review an idea that uses details of the quasinormal mode spectrum of a black hole to obtain the Bekenstein-Hawking entropy of $A/4$ in Loop Quantum Gravity. We further comment on a recent proposal concerning the quasinormal mode spectrum of rotating black holes. We conclude by remarking on a recent proposal to inclu... |
2011.06787 | Qi Chu | Qi Chu, Manoj Kovalam, Linqing Wen, Teresa Slaven-Blair, Joel Bosveld,
Yanbei Chen, Patrick Clearwater, Alex Codoreanu, Zhihui Du, Xiangyu Guo,
Xiaoyang Guo, Kyungmin Kim, Tjonnie G. F. Li, Victor Oloworaran, Fiona
Panther, Jade Powell, Anand S. Sengupta, Karl Wette, and Xingjiang Zhu | The SPIIR online coherent pipeline to search for gravitational waves
from compact binary coalescences | 17 pages, 15 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | This paper presents the SPIIR pipeline used for public alerts during the
third advanced LIGO and Virgo observation run (O3 run). The SPIIR pipeline uses
infinite impulse response (IIR) filters to perform extremely low-latency
matched filtering and this process is further accelerated with graphics
processing units (GP... | [
{
"created": "Fri, 13 Nov 2020 07:02:27 GMT",
"version": "v1"
},
{
"created": "Thu, 20 May 2021 09:07:54 GMT",
"version": "v2"
}
] | 2021-05-21 | [
[
"Chu",
"Qi",
""
],
[
"Kovalam",
"Manoj",
""
],
[
"Wen",
"Linqing",
""
],
[
"Slaven-Blair",
"Teresa",
""
],
[
"Bosveld",
"Joel",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Clearwater",
"Patrick",
""
],
[
"Co... | This paper presents the SPIIR pipeline used for public alerts during the third advanced LIGO and Virgo observation run (O3 run). The SPIIR pipeline uses infinite impulse response (IIR) filters to perform extremely low-latency matched filtering and this process is further accelerated with graphics processing units (GPUs... |
2003.02523 | Minyong Guo | Minyong Guo and Peng-Cheng Li | The innermost stable circular orbit and shadow in the novel $4D$
Einstein-Gauss-Bonnet gravity | 14 pages, 4 figures; v2: new reference and some modifications added,
accepted in EPJC | null | 10.1140/epjc/s10052-020-8164-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, a novel $4D$ Einstein-Gauss-Bonnet (EGB) gravity was formulated and
a spherically symmetric black hole solution in this theory was derived by D.
Glavan and C. Lin \cite{Glavan:2019inb}. In this paper, we study the geodesic
motions in the background of the spherically symmetric black hole, by focusing
on the... | [
{
"created": "Thu, 5 Mar 2020 10:27:47 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Mar 2020 13:44:02 GMT",
"version": "v2"
},
{
"created": "Tue, 16 Jun 2020 03:15:59 GMT",
"version": "v3"
}
] | 2020-07-15 | [
[
"Guo",
"Minyong",
""
],
[
"Li",
"Peng-Cheng",
""
]
] | Recently, a novel $4D$ Einstein-Gauss-Bonnet (EGB) gravity was formulated and a spherically symmetric black hole solution in this theory was derived by D. Glavan and C. Lin \cite{Glavan:2019inb}. In this paper, we study the geodesic motions in the background of the spherically symmetric black hole, by focusing on the i... |
2208.02291 | Cailin Plunkett | Cailin Plunkett, Sophie Hourihane, Katerina Chatziioannou | Concurrent estimation of noise and compact-binary signal parameters in
gravitational-wave data | 10 pages, 9 figures, 2 tables, matches published version | Phys. Rev. D 106, 104021 (2022) | 10.1103/PhysRevD.106.104021 | LIGO DCC: P2200234 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Gravitational-wave parameter estimation for compact binary signals typically
relies on sequential estimation of the properties of the detector Gaussian
noise and of the binary parameters. This procedure assumes that the noise
variance, expressed through its power spectral density, is perfectly known in
advance. We as... | [
{
"created": "Wed, 3 Aug 2022 18:19:02 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Nov 2022 23:24:12 GMT",
"version": "v2"
}
] | 2022-11-14 | [
[
"Plunkett",
"Cailin",
""
],
[
"Hourihane",
"Sophie",
""
],
[
"Chatziioannou",
"Katerina",
""
]
] | Gravitational-wave parameter estimation for compact binary signals typically relies on sequential estimation of the properties of the detector Gaussian noise and of the binary parameters. This procedure assumes that the noise variance, expressed through its power spectral density, is perfectly known in advance. We asse... |
gr-qc/0506019 | James Van Meter phd | James R. van Meter | The world problem: on the computability of the topology of 4-manifolds | Submitted to Class. Quant. Grav | null | null | null | gr-qc | null | Topological classification of the 4-manifolds bridges computation theory and
physics. A proof of the undecidability of the homeomorphy problem for
4-manifolds is outlined here in a clarifying way. It is shown that an arbitrary
Turing machine with an arbitrary input can be encoded into the topology of a
4-manifold, su... | [
{
"created": "Fri, 3 Jun 2005 15:46:09 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"van Meter",
"James R.",
""
]
] | Topological classification of the 4-manifolds bridges computation theory and physics. A proof of the undecidability of the homeomorphy problem for 4-manifolds is outlined here in a clarifying way. It is shown that an arbitrary Turing machine with an arbitrary input can be encoded into the topology of a 4-manifold, such... |
gr-qc/9302019 | Stuwert | E.D.Stewart and D.H.Lyth | A more accurate analytic calculation of the spectrum of cosmological
perturbations produced during inflation | 9 pages, KUNS 1176 and LANCS TH 93 01 | Phys.Lett.B302:171-175,1993 | 10.1016/0370-2693(93)90379-V | null | gr-qc astro-ph hep-ph | null | Formulae are derived for the spectra of scalar curvature perturbations and
gravitational waves produced during inflation, special cases of which include
power law inflation, natural inflation in the small angle approximation and
inflation in the slow roll approximation.
| [
{
"created": "Thu, 18 Feb 1993 07:09:45 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Stewart",
"E. D.",
""
],
[
"Lyth",
"D. H.",
""
]
] | Formulae are derived for the spectra of scalar curvature perturbations and gravitational waves produced during inflation, special cases of which include power law inflation, natural inflation in the small angle approximation and inflation in the slow roll approximation. |
0810.5156 | Marek Nowakowski | I. Arraut, D. Batic, M. Nowakowski | Comparing two approaches to Hawking radiation of Schwarzschild-de Sitter
black holes | new references added | Class.Quant.Grav.26:125006,2009 | 10.1088/0264-9381/26/12/125006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study two different ways to analyze the Hawking evaporation of a
Schwarzschild-de Sitter black hole. The first one uses the standard approach of
surface gravity evaluated at the possible horizons. The second method derives
its results via the Generalized Uncertainty Principle (GUP) which offers a yet
different met... | [
{
"created": "Tue, 28 Oct 2008 22:33:36 GMT",
"version": "v1"
},
{
"created": "Fri, 22 May 2009 20:56:06 GMT",
"version": "v2"
}
] | 2009-11-18 | [
[
"Arraut",
"I.",
""
],
[
"Batic",
"D.",
""
],
[
"Nowakowski",
"M.",
""
]
] | We study two different ways to analyze the Hawking evaporation of a Schwarzschild-de Sitter black hole. The first one uses the standard approach of surface gravity evaluated at the possible horizons. The second method derives its results via the Generalized Uncertainty Principle (GUP) which offers a yet different metho... |
2105.01361 | Guansheng He | Weijun Li, Zhongwen Feng, Xia Zhou, Xueling Mu, and Guansheng He | Kerr-Schild Form of the Exact Metric for a Constantly Moving Kerr Black
Hole and Null Gravitational Deflection | 13 pages, 1 figure, to be published in Int. J. Mod. Phys. D | Int. J. Mod. Phys. D 30, 2150067 (2021) | 10.1142/S021827182150067X | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The exact metric of a moving Kerr black hole with an arbitrary constant
velocity is derived in Kerr-Schild coordinates. We then calculate the null
equatorial gravitational deflection caused by a radially moving Kerr source up
to the second post-Minkowskian order, acting as an application of the weak
field limit of th... | [
{
"created": "Tue, 4 May 2021 08:33:14 GMT",
"version": "v1"
}
] | 2021-08-11 | [
[
"Li",
"Weijun",
""
],
[
"Feng",
"Zhongwen",
""
],
[
"Zhou",
"Xia",
""
],
[
"Mu",
"Xueling",
""
],
[
"He",
"Guansheng",
""
]
] | The exact metric of a moving Kerr black hole with an arbitrary constant velocity is derived in Kerr-Schild coordinates. We then calculate the null equatorial gravitational deflection caused by a radially moving Kerr source up to the second post-Minkowskian order, acting as an application of the weak field limit of the ... |
gr-qc/9211024 | null | R. Mansouri and M.Mohazzab (BROWN) | Tunneling in Anisotropic Cosmological Models | 13 pages, phyzzx | Class.Quant.Grav.10:1353-1359,1993 | 10.1088/0264-9381/10/7/011 | BROWN-HET-884 | gr-qc | null | Tunneling rate is investigated in homogenous and anisotropic cosmologies. The
calculations is done by two methods: Euclidean and Hamiltonian approaches. It
is found that the probability decreases exponentialy as anisotropy is
increased.
| [
{
"created": "Thu, 19 Nov 1992 15:26:46 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Mansouri",
"R.",
"",
"BROWN"
],
[
"Mohazzab",
"M.",
"",
"BROWN"
]
] | Tunneling rate is investigated in homogenous and anisotropic cosmologies. The calculations is done by two methods: Euclidean and Hamiltonian approaches. It is found that the probability decreases exponentialy as anisotropy is increased. |
gr-qc/0510052 | David Kribs | David W. Kribs and Fotini Markopoulou | Geometry from quantum particles | 17 pages, LaTex | null | null | null | gr-qc hep-th | null | We investigate the possibility that a background independent quantum theory
of gravity is not a theory of quantum geometry. We provide a way for global
spacetime symmetries to emerge from a background independent theory without
geometry. In this, we use a quantum information theoretic formulation of
quantum gravity a... | [
{
"created": "Tue, 11 Oct 2005 02:18:17 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kribs",
"David W.",
""
],
[
"Markopoulou",
"Fotini",
""
]
] | We investigate the possibility that a background independent quantum theory of gravity is not a theory of quantum geometry. We provide a way for global spacetime symmetries to emerge from a background independent theory without geometry. In this, we use a quantum information theoretic formulation of quantum gravity and... |
0707.2664 | Baojiu Li | Baojiu Li, John D. Barrow, David F. Mota | The Cosmology of Ricci-Tensor-Squared Gravity in the Palatini
Variational Approach | 11 pages, 2 figures; version to appear in Phys. Rev. D | Phys.Rev.D76:104047,2007 | 10.1103/PhysRevD.76.104047 | null | gr-qc astro-ph | null | We consider the cosmology of the Ricci-tensor-squared gravity in the Palatini
variational approach. The gravitational action of standard general relativity
is modified by adding a function f(R^abR_ab) to the Einstein-Hilbert action,
and the Palatini variation is used to derive the field equations. A general
method of... | [
{
"created": "Wed, 18 Jul 2007 08:01:22 GMT",
"version": "v1"
},
{
"created": "Sun, 7 Oct 2007 18:20:18 GMT",
"version": "v2"
},
{
"created": "Fri, 12 Oct 2007 15:22:00 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Li",
"Baojiu",
""
],
[
"Barrow",
"John D.",
""
],
[
"Mota",
"David F.",
""
]
] | We consider the cosmology of the Ricci-tensor-squared gravity in the Palatini variational approach. The gravitational action of standard general relativity is modified by adding a function f(R^abR_ab) to the Einstein-Hilbert action, and the Palatini variation is used to derive the field equations. A general method of o... |
2305.12367 | Yorgo Senikoglu | Tekin Dereli and Yorgo Senikoglu | Weyl Neutrinos In Plane Symmetric Spacetimes | Matches published version | General Relativity and Gravitation (2023) 55:126 | 10.1007/s10714-023-03175-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate complex quaternion-valued exterior differential forms over
4-dimensional Lorentzian spacetimes and explore Weyl spinor fields as minimal
left ideals within the complex quaternion algebra. The variational derivation
of the coupled Einstein-Weyl equations from an action is presented, and the
resulting fi... | [
{
"created": "Sun, 21 May 2023 06:35:06 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Nov 2023 08:55:56 GMT",
"version": "v2"
}
] | 2023-11-03 | [
[
"Dereli",
"Tekin",
""
],
[
"Senikoglu",
"Yorgo",
""
]
] | We investigate complex quaternion-valued exterior differential forms over 4-dimensional Lorentzian spacetimes and explore Weyl spinor fields as minimal left ideals within the complex quaternion algebra. The variational derivation of the coupled Einstein-Weyl equations from an action is presented, and the resulting fiel... |
gr-qc/9909085 | Jonathan R. Ellis | John Ellis (CERN), N.E. Mavromatos (Kings College London), D.V.
Nanopoulos (Texas A&M, HARC, Academy of Athens) | Probing Models of Quantum Space-Time Foam | 31 pages LaTeX, 5 figures, eps and style files included, invited
contribution to the conference Beyond the Desert 99, Ringberg, June 1999 | null | null | ACT-10/99,CTP-TAMU-40/99 | gr-qc astro-ph hep-ph hep-th | null | We review the possibility that quantum fluctuations in the structure of
space-time at the Planck scale might be subject to experimental probes. We
study the effects of space-time foam in an approach inspired by string theory,
in which solitonic D-brane excitations are taken into account when considering
the ground st... | [
{
"created": "Tue, 28 Sep 1999 15:31:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ellis",
"John",
"",
"CERN"
],
[
"Mavromatos",
"N. E.",
"",
"Kings College London"
],
[
"Nanopoulos",
"D. V.",
"",
"Texas A&M, HARC, Academy of Athens"
]
] | We review the possibility that quantum fluctuations in the structure of space-time at the Planck scale might be subject to experimental probes. We study the effects of space-time foam in an approach inspired by string theory, in which solitonic D-brane excitations are taken into account when considering the ground stat... |
gr-qc/9906067 | Bernhard Haisch | Alfonso Rueda, Hiroki Sunahata and Bernhard Haisch | Electromagnetic Zero Point Field as Active Energy Source in the
Intergalactic Medium | 7 pages, no figures | 35th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit,
20-24 June 1999, Los Angeles | null | AIAA paper 99-2145 | gr-qc | null | For over twenty years the possibility that the electromagnetic zero point
field (ZPF) may actively accelerate electromagnetically interacting particles
in regions of extremely low particle density (as those extant in intergalactic
space (IGS) with n < 1 particle/m^3 has been studied and analyzed. This
energizing phen... | [
{
"created": "Wed, 16 Jun 1999 21:09:47 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rueda",
"Alfonso",
""
],
[
"Sunahata",
"Hiroki",
""
],
[
"Haisch",
"Bernhard",
""
]
] | For over twenty years the possibility that the electromagnetic zero point field (ZPF) may actively accelerate electromagnetically interacting particles in regions of extremely low particle density (as those extant in intergalactic space (IGS) with n < 1 particle/m^3 has been studied and analyzed. This energizing phenom... |
gr-qc/9503034 | Neil Cornish | Neil J. Cornish | The Unholey Solution to Black Hole Information Loss | 4 pages, RevTeX, 1 figure (uuencode, compressed). | null | null | UTPT-95-03 | gr-qc | null | The simplest solution to the black hole information loss problem is to
eliminate black holes. Modifications of Einstein gravity which accomplish this
are discussed and the possibility that string theory is free of black holes is
considered.
| [
{
"created": "Tue, 21 Mar 1995 21:35:03 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cornish",
"Neil J.",
""
]
] | The simplest solution to the black hole information loss problem is to eliminate black holes. Modifications of Einstein gravity which accomplish this are discussed and the possibility that string theory is free of black holes is considered. |
gr-qc/0104024 | Philippos Papadopoulos | Philippos Papadopoulos | Non-linear harmonic generation in finite amplitude black hole
oscillations | 13 pages; submitted to Phys. Rev D | Phys.Rev. D65 (2002) 084016 | 10.1103/PhysRevD.65.084016 | null | gr-qc | null | The non-linear generation of harmonics in gravitational perturbations of
black holes is explored using numerical relativity based on an in-going
light-cone framework. Localised, finite, perturbations of an isolated black
hole are parametrised by amplitude and angular harmonic form. The response of
the black hole spac... | [
{
"created": "Mon, 9 Apr 2001 12:46:01 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Papadopoulos",
"Philippos",
""
]
] | The non-linear generation of harmonics in gravitational perturbations of black holes is explored using numerical relativity based on an in-going light-cone framework. Localised, finite, perturbations of an isolated black hole are parametrised by amplitude and angular harmonic form. The response of the black hole spacet... |
0706.1166 | Niall \'O Murchadha | Niall O Murchadha | The Liu-Yau mass as a good quasi-local energy in general relativity | 4 pqges, Latex | null | null | null | gr-qc | null | A quasi-local mass has been a long sought after quantity in general
relativity. A recent candidate has been the Liu-Yau mass. One can show that the
Liu-Yau mass of any two-surface is the maximum of the Brown-York energy for
that two-surface. This means that it has significant disadvantages as a mass.
It is much bette... | [
{
"created": "Fri, 8 Jun 2007 11:52:18 GMT",
"version": "v1"
}
] | 2007-06-11 | [
[
"Murchadha",
"Niall O",
""
]
] | A quasi-local mass has been a long sought after quantity in general relativity. A recent candidate has been the Liu-Yau mass. One can show that the Liu-Yau mass of any two-surface is the maximum of the Brown-York energy for that two-surface. This means that it has significant disadvantages as a mass. It is much better ... |
gr-qc/9805052 | Dan Baleanu | Dumitru Baleanu (Bogoliubov LTPh, JINR, Dubna,Russia) | About Duality and Killing tensors | 6 pages LaTeX, content enlarged and revised, to appear in Supplemento
ai Rendiconti del Circolo Matematico di Palermo | null | null | null | gr-qc | null | In this paper the isometries of the dual space were investigated. The dual
structural equations of a Killing tensor of order two were found . The flat
space case was analyzed in details.
| [
{
"created": "Thu, 14 May 1998 00:31:45 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Aug 1999 20:21:29 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Baleanu",
"Dumitru",
"",
"Bogoliubov LTPh, JINR, Dubna,Russia"
]
] | In this paper the isometries of the dual space were investigated. The dual structural equations of a Killing tensor of order two were found . The flat space case was analyzed in details. |
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