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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1008.1308 | Dan Radu Grigore | D. R. Grigore, G. Scharf | Non-trivial 2+1-Dimensional Gravity | 15 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze 2+1-dimensional gravity in the framework of quantum gauge theory.
We find that Einstein gravity has a trivial physical subspace which reflects
the fact that the classical solution in empty space is flat. Therefore we study
massive gravity which is not trivial. In the limit of vanishing graviton mass
we obt... | [
{
"created": "Sat, 7 Aug 2010 05:55:13 GMT",
"version": "v1"
}
] | 2010-08-10 | [
[
"Grigore",
"D. R.",
""
],
[
"Scharf",
"G.",
""
]
] | We analyze 2+1-dimensional gravity in the framework of quantum gauge theory. We find that Einstein gravity has a trivial physical subspace which reflects the fact that the classical solution in empty space is flat. Therefore we study massive gravity which is not trivial. In the limit of vanishing graviton mass we obtai... |
1406.7347 | Manuel Malaver D | Manuel Malaver | Some new models for strange quark stars with isotropic pressure | Accepted for publication in Journal of Earth and Planetary Sciences | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We found new class of solutions to the Einstein-Maxwell system of equations
for charged quark matter within the framework of MIT Bag Model considering a
gravitational potential Z(x) proposed by Thirukkanesh and Ragel (2013), which
depends on an adjustable parameter n. Variables as the energy density, charge
density, ... | [
{
"created": "Sat, 28 Jun 2014 02:34:21 GMT",
"version": "v1"
}
] | 2014-07-01 | [
[
"Malaver",
"Manuel",
""
]
] | We found new class of solutions to the Einstein-Maxwell system of equations for charged quark matter within the framework of MIT Bag Model considering a gravitational potential Z(x) proposed by Thirukkanesh and Ragel (2013), which depends on an adjustable parameter n. Variables as the energy density, charge density, pr... |
0711.4917 | Christian Corda | Christian Corda | Massive gravitational waves from the R^2 theory of gravity: production
and response of interferometers | Accepted for the International Journal of Modern Physics A | Int.J.Mod.Phys.A23:1521-1535,2008 | 10.1142/S0217751X08038603 | null | gr-qc | null | We show that from the R^{2} high order gravity theory it is possible to
produce, in the linearized approch, particles which can be seen like massive
modes of gravitational waves (GWs). The presence of the mass generates a
longitudinal force in addition of the transverse one which is proper of the
massless gravitation... | [
{
"created": "Fri, 30 Nov 2007 11:57:58 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Corda",
"Christian",
""
]
] | We show that from the R^{2} high order gravity theory it is possible to produce, in the linearized approch, particles which can be seen like massive modes of gravitational waves (GWs). The presence of the mass generates a longitudinal force in addition of the transverse one which is proper of the massless gravitational... |
1108.4485 | Pablo Galaviz | Pablo Galaviz | Stability and chaos of hierarchical three black hole configurations | 16 pages, 17 figures and 4 tables. Version published in Phys. Rev. D.
arXiv admin note: text overlap with arXiv:1012.4423 | Phys.Rev.D84:104038,2011 | 10.1103/PhysRevD.84.104038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the stability and chaos of three compact objects using
post-Newtonian (PN) equations of motion derived from the
Arnowitt-Deser-Misner-Hamiltonian formulation. We include terms up to 2.5 PN
order in the orbital part and the leading order in spin corrections. We
performed numerical simulations of a hierarchica... | [
{
"created": "Tue, 23 Aug 2011 03:28:47 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Feb 2012 03:52:02 GMT",
"version": "v2"
}
] | 2012-02-06 | [
[
"Galaviz",
"Pablo",
""
]
] | We study the stability and chaos of three compact objects using post-Newtonian (PN) equations of motion derived from the Arnowitt-Deser-Misner-Hamiltonian formulation. We include terms up to 2.5 PN order in the orbital part and the leading order in spin corrections. We performed numerical simulations of a hierarchical ... |
1309.0031 | Manuel Hohmann | Manuel Hohmann, Laur Jarv, Piret Kuusk and Erik Randla | Post-Newtonian parameters gamma and beta of scalar-tensor gravity with a
general potential | 17 pages, 5 figures, REVTex 4.1; typo corrected, clarification added | Phys. Rev. D 88, 084054 (2013) | 10.1103/PhysRevD.88.084054 | null | gr-qc astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the PPN parameters gamma and beta for scalar-tensor gravity with
a generic coupling function omega and scalar potential V in the Jordan
conformal frame in the case of a static spherically symmetric source. Since the
potential generally introduces a radial dependence to the effective
gravitational constan... | [
{
"created": "Fri, 30 Aug 2013 21:33:12 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Feb 2014 08:04:43 GMT",
"version": "v2"
}
] | 2014-02-25 | [
[
"Hohmann",
"Manuel",
""
],
[
"Jarv",
"Laur",
""
],
[
"Kuusk",
"Piret",
""
],
[
"Randla",
"Erik",
""
]
] | We calculate the PPN parameters gamma and beta for scalar-tensor gravity with a generic coupling function omega and scalar potential V in the Jordan conformal frame in the case of a static spherically symmetric source. Since the potential generally introduces a radial dependence to the effective gravitational constant ... |
gr-qc/9706078 | R. Beig, Univ. Wien. | Robert Beig, Laszlo B Szabados | On a global conformal invariant of initial data sets | 17 pages, Plain Tex | Class.Quant.Grav. 14 (1997) 3091-3107 | 10.1088/0264-9381/14/11/010 | null | gr-qc dg-ga math.DG | null | In the present paper a global conformal invariant $Y$ of a closed initial
data set is constructed. A spacelike hypersurface $\Sigma$ in a Lorentzian
spacetime naturally inherits from the spacetime metric a differentiation ${\cal
D}_e$, the so-called real Sen connection, which turns out to be determined
completely by ... | [
{
"created": "Thu, 26 Jun 1997 15:48:57 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Beig",
"Robert",
""
],
[
"Szabados",
"Laszlo B",
""
]
] | In the present paper a global conformal invariant $Y$ of a closed initial data set is constructed. A spacelike hypersurface $\Sigma$ in a Lorentzian spacetime naturally inherits from the spacetime metric a differentiation ${\cal D}_e$, the so-called real Sen connection, which turns out to be determined completely by th... |
gr-qc/0107067 | Duncan Noltingk | Duncan Noltingk | Classical History Theory of Vector Fields | 26 pages | J.Math.Phys. 43 (2002) 3036-3052 | 10.1063/1.1473218 | null | gr-qc | null | We consider the extension of classical history theory to the massive vector
field and electromagnetism. It is argued that the action of the two Poincare
groups introduced by Savvidou suggests that the history fields should have five
components. The extra degrees of freedom introduced to make the fields
five-dimension... | [
{
"created": "Thu, 19 Jul 2001 13:55:11 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Noltingk",
"Duncan",
""
]
] | We consider the extension of classical history theory to the massive vector field and electromagnetism. It is argued that the action of the two Poincare groups introduced by Savvidou suggests that the history fields should have five components. The extra degrees of freedom introduced to make the fields five-dimensional... |
gr-qc/0609111 | Bayram Tekin | S. Deser, Bayram Tekin | Conformal Properties of Charges in Scalar-Tensor Gravities | 4 pages | Class.Quant.Grav.23:7479-7482,2006 | 10.1088/0264-9381/23/24/018 | null | gr-qc hep-th | null | We study the behavior under conformal transformations of energy and other
charges in generic scalar-tensor models. This enables us to conclude that the
ADM/AD masses are invariant under field redefinitions mixing metric and scalar
despite the permitted slow asymptotic falloff of massless scalars.
| [
{
"created": "Sun, 24 Sep 2006 17:30:51 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Deser",
"S.",
""
],
[
"Tekin",
"Bayram",
""
]
] | We study the behavior under conformal transformations of energy and other charges in generic scalar-tensor models. This enables us to conclude that the ADM/AD masses are invariant under field redefinitions mixing metric and scalar despite the permitted slow asymptotic falloff of massless scalars. |
2211.01405 | Isabela Santiago De Matos | Jo\~ao C. Lobato, Isabela S. Matos, Maur\'icio O. Calv\~ao, Ioav Waga | Gravitational wave stochastic background in reduced Horndeski theories | 10 pages | Physical Review D 106, 104048 (2022) | 10.1103/PhysRevD.106.104048 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize to reduced Horndeski theories of gravity, where gravitational
waves (GWs) travel at the speed of light, the expression of a statistically
homogeneous and unpolarized stochastic gravitational wave background (SGWB)
signal measured as the correlation between the individual signals detected by
two interfer... | [
{
"created": "Wed, 2 Nov 2022 18:01:02 GMT",
"version": "v1"
}
] | 2022-12-01 | [
[
"Lobato",
"João C.",
""
],
[
"Matos",
"Isabela S.",
""
],
[
"Calvão",
"Maurício O.",
""
],
[
"Waga",
"Ioav",
""
]
] | We generalize to reduced Horndeski theories of gravity, where gravitational waves (GWs) travel at the speed of light, the expression of a statistically homogeneous and unpolarized stochastic gravitational wave background (SGWB) signal measured as the correlation between the individual signals detected by two interferom... |
gr-qc/9310009 | Jesus Barbero | J. Fernando Barbero | General Relativity as a Theory of Two Connections | 18 pages, LATEX, Preprint CGPG-93/09-5 | Int.J.Mod.Phys.D3:379-392,1994 | 10.1142/S0218271894000587 | null | gr-qc | null | We show in this paper that it is possible to formulate General Relativity in
a phase space coordinatized by two $SO(3)$ connections. We analyze first the
Husain-Kucha\v{r} model and find a two connection description for it.
Introducing a suitable scalar constraint in this phase space we get a
Hamiltonian formulation ... | [
{
"created": "Mon, 4 Oct 1993 13:58:10 GMT",
"version": "v1"
}
] | 2017-03-24 | [
[
"Barbero",
"J. Fernando",
""
]
] | We show in this paper that it is possible to formulate General Relativity in a phase space coordinatized by two $SO(3)$ connections. We analyze first the Husain-Kucha\v{r} model and find a two connection description for it. Introducing a suitable scalar constraint in this phase space we get a Hamiltonian formulation of... |
2303.09277 | Hang Li | Hang Li and P. Wang | Translation gauge field theory of gravity in Minkowski spacetime | null | Chin. Phys. C 47 (2023) 115103 | 10.1088/1674-1137/acf0b2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational field with spin-2 is introduced naturally by the
requirement that the Lagrangian is locally translation invariant in Minkowski
spacetime. The interactions between the gravitational field and spin-1/2, 0, 1
matter fields are obtained along with the Lagrangian for the gravitational
field including sel... | [
{
"created": "Thu, 16 Mar 2023 12:58:48 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Sep 2023 09:45:53 GMT",
"version": "v2"
}
] | 2023-09-22 | [
[
"Li",
"Hang",
""
],
[
"Wang",
"P.",
""
]
] | The gravitational field with spin-2 is introduced naturally by the requirement that the Lagrangian is locally translation invariant in Minkowski spacetime. The interactions between the gravitational field and spin-1/2, 0, 1 matter fields are obtained along with the Lagrangian for the gravitational field including self-... |
2004.13061 | Che-Yu Chen | Mariam Bouhmadi-L\'opez, Suddhasattwa Brahma, Che-Yu Chen, Pisin Chen,
Dong-han Yeom | A consistent model of non-singular Schwarzschild black hole in loop
quantum gravity and its quasinormal modes | 18 pages, 9 figures. Updated to match the published version | JCAP 07 (2020) 066 | 10.1088/1475-7516/2020/07/066 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the interior structure, perturbations, and the associated
quasinormal modes of a quantum black hole model recently proposed by
Bodendorfer, Mele, and M\"unch (BMM). Within the framework of loop quantum
gravity, the quantum parameters in the BMM model are introduced through
polymerization, consequently ... | [
{
"created": "Mon, 27 Apr 2020 18:00:51 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Aug 2020 04:05:05 GMT",
"version": "v2"
}
] | 2020-08-04 | [
[
"Bouhmadi-López",
"Mariam",
""
],
[
"Brahma",
"Suddhasattwa",
""
],
[
"Chen",
"Che-Yu",
""
],
[
"Chen",
"Pisin",
""
],
[
"Yeom",
"Dong-han",
""
]
] | We investigate the interior structure, perturbations, and the associated quasinormal modes of a quantum black hole model recently proposed by Bodendorfer, Mele, and M\"unch (BMM). Within the framework of loop quantum gravity, the quantum parameters in the BMM model are introduced through polymerization, consequently re... |
1501.03117 | Sunil Kumar Tripathy Dr. | S. K. Tripathy, D. Behera and T.R. Routray | Anisotropic Cosmological Model with Variable G and Lambda | 9pages | Astrophysics and Space Science 340 (2), 211-215 (2012) | 10.1007/s10509-012-1107-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Anisotropic Bianchi-III cosmological model is investigated with variable
gravitational and cosmological constants in the framework of Einstein's general
relativity. The shear scalar is considered to be proportional to the expansion
scalar. The dynamics of the anisotropic universe with variable G and Lambda are
discus... | [
{
"created": "Mon, 12 Jan 2015 15:48:08 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Tripathy",
"S. K.",
""
],
[
"Behera",
"D.",
""
],
[
"Routray",
"T. R.",
""
]
] | Anisotropic Bianchi-III cosmological model is investigated with variable gravitational and cosmological constants in the framework of Einstein's general relativity. The shear scalar is considered to be proportional to the expansion scalar. The dynamics of the anisotropic universe with variable G and Lambda are discusse... |
1607.00334 | Tommi Markkanen | Tommi Markkanen and Arttu Rajantie | Massive scalar field evolution in de Sitter | 22 pages, 5 figures. v2: References added. v3: Expanded text, added
references. Version accepted by JHEP | null | 10.1007/JHEP01(2017)133 | KCL-PH-TH/2016-41 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The behaviour of a massive, non-interacting and non-minimally coupled
quantised scalar field in an expanding de Sitter background is investigated by
solving the field evolution for an arbitrary initial state. In this approach
there is no need to choose a vacuum in order to provide a definition for
particle states. We... | [
{
"created": "Fri, 1 Jul 2016 18:09:26 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Jul 2016 13:01:13 GMT",
"version": "v2"
},
{
"created": "Thu, 26 Jan 2017 13:16:42 GMT",
"version": "v3"
}
] | 2017-03-08 | [
[
"Markkanen",
"Tommi",
""
],
[
"Rajantie",
"Arttu",
""
]
] | The behaviour of a massive, non-interacting and non-minimally coupled quantised scalar field in an expanding de Sitter background is investigated by solving the field evolution for an arbitrary initial state. In this approach there is no need to choose a vacuum in order to provide a definition for particle states. We c... |
gr-qc/9711090 | Ion Cotaescu | Ion I. Cotaescu (West Univ. Timisoara, Timisoara, Romania) | A new class of (3+1) quantum geometric models | 6 pages, LaTeX article | Anal.Univ.Vest Timisoara Ser.Theor.Math.Comput.Phys.1:56-60,1998 | null | null | gr-qc | null | A new family of analytically solvable quantum geometric models is proposed.
The structure of the energy spectra as well as the form of the corresponding
eigenfunctions are presented pointing out their main specific properties.
| [
{
"created": "Fri, 28 Nov 1997 15:24:30 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Cotaescu",
"Ion I.",
"",
"West Univ. Timisoara, Timisoara, Romania"
]
] | A new family of analytically solvable quantum geometric models is proposed. The structure of the energy spectra as well as the form of the corresponding eigenfunctions are presented pointing out their main specific properties. |
1406.1553 | Xin-Zhou Li | Hongsheng Zhang, Xin-Zhou Li | From thermodynamics to the solutions in gravity theory | 9pages | null | 10.1016/j.physletb.2014.09.010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent work, we present a new point of view to the relation of gravity
and thermodynamics, in which we derive the \sch~solution through thermodynamic
laws by the aid of the Misner-Sharp mass in an adiabatic system. In this paper
we continue to investigate the relation between gravity and thermodynamics for
obtai... | [
{
"created": "Fri, 6 Jun 2014 01:37:47 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Zhang",
"Hongsheng",
""
],
[
"Li",
"Xin-Zhou",
""
]
] | In a recent work, we present a new point of view to the relation of gravity and thermodynamics, in which we derive the \sch~solution through thermodynamic laws by the aid of the Misner-Sharp mass in an adiabatic system. In this paper we continue to investigate the relation between gravity and thermodynamics for obtaini... |
gr-qc/0602046 | Vladimir Kassandrov | Vladimir V. Kassandrov | On the structure of general solution to the equations of shear-free null
congruences | 5 pages, LaTeX | Proceedings of the Int. School-Seminar on geometry and analysis in
memory of N.V.Efimov. Rostov-na-Donu Univ. Press, 2004, p. 65-68 | null | null | gr-qc hep-th math-ph math.MP | null | We demonstrate that the source of a shear-free null congruence is,
generically, a world sheet of a singular string in the complex Minkowski space.
In particular cases the string degenerates into the Newman's point singularity.
We describe also a time-dependent deformation of the Kerr's congruence which
could indicate... | [
{
"created": "Mon, 13 Feb 2006 16:55:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kassandrov",
"Vladimir V.",
""
]
] | We demonstrate that the source of a shear-free null congruence is, generically, a world sheet of a singular string in the complex Minkowski space. In particular cases the string degenerates into the Newman's point singularity. We describe also a time-dependent deformation of the Kerr's congruence which could indicate t... |
2209.14585 | Jose M. M. Senovilla | Jos\'e M. M. Senovilla | Ultra-massive spacetimes | 22 pages, 11 figures with conformal diagrams. Final version to be
published in Portugaliae Mathematica. Minor adjustments and typos corrected.
A couple of references added | null | null | YITP-22-104 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A positive cosmological constant $\Lambda >0$ sets an upper limit for the
area of marginally future-trapped surfaces enclosing a black hole (BH). Does
this mean that the mass of the BH cannot increase beyond the corresponding
limit? I analyze some simple spherically symmetric models where regions within
a dynamical h... | [
{
"created": "Thu, 29 Sep 2022 06:54:10 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Oct 2022 03:32:41 GMT",
"version": "v2"
},
{
"created": "Wed, 19 Oct 2022 07:28:29 GMT",
"version": "v3"
},
{
"created": "Thu, 20 Oct 2022 04:40:45 GMT",
"version": "v4"
},
{
"c... | 2022-12-07 | [
[
"Senovilla",
"José M. M.",
""
]
] | A positive cosmological constant $\Lambda >0$ sets an upper limit for the area of marginally future-trapped surfaces enclosing a black hole (BH). Does this mean that the mass of the BH cannot increase beyond the corresponding limit? I analyze some simple spherically symmetric models where regions within a dynamical hor... |
1410.0207 | Macarena Lagos | Macarena Lagos, Pedro G. Ferreira | Cosmological perturbations in massive bigravity | 42 pages, 15 figures. Update: typos corrected and appendix on Higuchi
bound | null | 10.1088/1475-7516/2014/12/026 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a comprehensive analysis of classical scalar, vector and tensor
cosmological perturbations in ghost-free massive bigravity. In particular, we
find the full evolution equations and analytical solutions in a wide range of
regimes. We show that there are viable cosmological backgrounds but, as has
been found ... | [
{
"created": "Tue, 30 Sep 2014 16:45:12 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Oct 2014 15:03:36 GMT",
"version": "v2"
},
{
"created": "Mon, 24 Nov 2014 16:18:00 GMT",
"version": "v3"
},
{
"created": "Tue, 9 Dec 2014 16:21:51 GMT",
"version": "v4"
}
] | 2015-06-23 | [
[
"Lagos",
"Macarena",
""
],
[
"Ferreira",
"Pedro G.",
""
]
] | We present a comprehensive analysis of classical scalar, vector and tensor cosmological perturbations in ghost-free massive bigravity. In particular, we find the full evolution equations and analytical solutions in a wide range of regimes. We show that there are viable cosmological backgrounds but, as has been found in... |
gr-qc/9802044 | Wolfgang Drechsler | W. Drechsler and H. Tann | Broken Weyl-Invariance and the Origin of Mass | Latex, 47 pages | Found.Phys.29:1023-1064,1999 | 10.1023/A:1012851715278 | MPI-PhT/97-87 | gr-qc | null | A massless Weyl-invariant dynamics of a scalar, a Dirac spinor, and
electromagnetic fields is formulated in a Weyl space, $W_4$, allowing for
conformal rescalings of the metric and of all fields with nontrivial Weyl
weight together with the associated transformations of the Weyl vector fields
$\ka_\mu$ representing t... | [
{
"created": "Tue, 17 Feb 1998 14:26:46 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Drechsler",
"W.",
""
],
[
"Tann",
"H.",
""
]
] | A massless Weyl-invariant dynamics of a scalar, a Dirac spinor, and electromagnetic fields is formulated in a Weyl space, $W_4$, allowing for conformal rescalings of the metric and of all fields with nontrivial Weyl weight together with the associated transformations of the Weyl vector fields $\ka_\mu$ representing the... |
2004.02527 | Tim Dietrich | Tim Dietrich and Tanja Hinderer and Anuradha Samajdar | Interpreting Binary Neutron Star Mergers: Describing the Binary Neutron
Star Dynamics, Modelling Gravitational Waveforms, and Analyzing Detections | invited review for General Relativity and Gravitation; any comment or
suggestion is welcome | null | 10.1007/s10714-020-02751-6 | null | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves emitted from the coalescence of neutron star binaries
open a new window to probe matter and fundamental physics in unexplored,
extreme regimes. To extract information about the supranuclear matter inside
neutron stars and the properties of the compact binary systems, robust
theoretical prescriptio... | [
{
"created": "Mon, 6 Apr 2020 09:57:19 GMT",
"version": "v1"
}
] | 2021-03-10 | [
[
"Dietrich",
"Tim",
""
],
[
"Hinderer",
"Tanja",
""
],
[
"Samajdar",
"Anuradha",
""
]
] | Gravitational waves emitted from the coalescence of neutron star binaries open a new window to probe matter and fundamental physics in unexplored, extreme regimes. To extract information about the supranuclear matter inside neutron stars and the properties of the compact binary systems, robust theoretical prescriptions... |
1708.02689 | Yen-Kheng Lim | Nicholas W. K. Wong, Jiangbin Gong, Yen-Kheng Lim, and Qing-hai Wang | Criteria of existence for bounce solutions in false vacuum decay with
gravity | 15 pages, 5 figures. Added references and typos corrected. Accepted
for publication in Classical and Quantum Gravity | Class. Quantum Grav., vol 35 (2018) 045016 | 10.1088/1361-6382/aaa4ea | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The bounce solutions of self-interacting scalar fields coupled to gravity are
studied using a semi-classical approach. We found that bounce solutions have a
maximum required barrier curvature, in addition to the known minimum required
barrier curvature. In particular, as the maximum barrier curvature is
approached, t... | [
{
"created": "Wed, 9 Aug 2017 01:20:12 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Aug 2017 06:14:45 GMT",
"version": "v2"
},
{
"created": "Wed, 24 Jan 2018 01:00:36 GMT",
"version": "v3"
}
] | 2018-01-29 | [
[
"Wong",
"Nicholas W. K.",
""
],
[
"Gong",
"Jiangbin",
""
],
[
"Lim",
"Yen-Kheng",
""
],
[
"Wang",
"Qing-hai",
""
]
] | The bounce solutions of self-interacting scalar fields coupled to gravity are studied using a semi-classical approach. We found that bounce solutions have a maximum required barrier curvature, in addition to the known minimum required barrier curvature. In particular, as the maximum barrier curvature is approached, the... |
0908.0861 | M\'arcio Eduardo da Silva Alves | Marcio E.S. Alves, Oswaldo D. Miranda and Jose C.N. de Araujo | Probing the f(R) formalism through gravitational wave polarizations | 18 pages, 1 figure, accepted for publication in Physics Letters B | null | 10.1016/j.physletb.2009.08.005 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The direct observation of gravitational waves (GWs) in the near future, and
the corresponding determination of the number of independent polarizations, is
a powerful tool to test general relativity and alternative theories of gravity.
In the present work we use the Newman-Penrose formalism to characterize GWs in
quad... | [
{
"created": "Thu, 6 Aug 2009 13:03:43 GMT",
"version": "v1"
}
] | 2015-05-13 | [
[
"Alves",
"Marcio E. S.",
""
],
[
"Miranda",
"Oswaldo D.",
""
],
[
"de Araujo",
"Jose C. N.",
""
]
] | The direct observation of gravitational waves (GWs) in the near future, and the corresponding determination of the number of independent polarizations, is a powerful tool to test general relativity and alternative theories of gravity. In the present work we use the Newman-Penrose formalism to characterize GWs in quadra... |
1706.10157 | Quentin G. Bailey | Quentin G. Bailey and Daniel Havert | Velocity-dependent inverse cubic force and solar system gravity tests | 10 pages, matches published version | Phys. Rev. D 96, 064035 (2017) | 10.1103/PhysRevD.96.064035 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Higher mass dimension terms in an effective field theory framework for tests
of spacetime symmetries are studied. Using a post-Newtonian expansion method,
we derive the spacetime metric and the equations of motion for a binary system.
This reveals an inverse cubic force correction to General Relativity that
depends o... | [
{
"created": "Fri, 30 Jun 2017 11:51:40 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Oct 2017 00:53:31 GMT",
"version": "v2"
}
] | 2017-10-03 | [
[
"Bailey",
"Quentin G.",
""
],
[
"Havert",
"Daniel",
""
]
] | Higher mass dimension terms in an effective field theory framework for tests of spacetime symmetries are studied. Using a post-Newtonian expansion method, we derive the spacetime metric and the equations of motion for a binary system. This reveals an inverse cubic force correction to General Relativity that depends on ... |
2406.04954 | Lijing Shao | Peixiang Ji, Lijing Shao | Scalar Dark Energy Models and Scalar-Tensor Gravity: Theoretical
Explanations for the Accelerated Expansion of Present Universe | 58 pages, 7 figures, 4 tables; submitted to Communications in
Theoretical Physics as a review article | null | 10.1088/1572-9494/ad5aeb | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The reason for the present accelerated expansion of the Universe stands as
one of the most profound questions in the realm of science, with deep
connections to both cosmology and fundamental physics. From a cosmological
point of view, physical models aimed at elucidating the observed expansion can
be categorized into... | [
{
"created": "Fri, 7 Jun 2024 14:19:34 GMT",
"version": "v1"
}
] | 2024-06-25 | [
[
"Ji",
"Peixiang",
""
],
[
"Shao",
"Lijing",
""
]
] | The reason for the present accelerated expansion of the Universe stands as one of the most profound questions in the realm of science, with deep connections to both cosmology and fundamental physics. From a cosmological point of view, physical models aimed at elucidating the observed expansion can be categorized into t... |
0904.0045 | Xin Zhang | Chao-Jun Feng, Xin Zhang | Holographic Ricci dark energy in Randall-Sundrum braneworld: Avoidance
of big rip and steady state future | 6 pages, 4 figures; v2: discussions added, accepted for publication
in Phys. Lett. B; v3: published version | Phys.Lett.B680:399-403,2009 | 10.1016/j.physletb.2009.09.040 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the holographic Ricci dark energy (RDE) model, the parameter $\alpha$
plays an important role in determining the evolutionary behavior of the dark
energy. When $\alpha<1/2$, the RDE will exhibit a quintom feature, i.e., the
equation of state of dark energy will evolve across the cosmological constant
boundary $w=-... | [
{
"created": "Wed, 1 Apr 2009 01:34:37 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Sep 2009 09:27:27 GMT",
"version": "v2"
},
{
"created": "Sun, 27 Sep 2009 14:19:38 GMT",
"version": "v3"
}
] | 2009-10-06 | [
[
"Feng",
"Chao-Jun",
""
],
[
"Zhang",
"Xin",
""
]
] | In the holographic Ricci dark energy (RDE) model, the parameter $\alpha$ plays an important role in determining the evolutionary behavior of the dark energy. When $\alpha<1/2$, the RDE will exhibit a quintom feature, i.e., the equation of state of dark energy will evolve across the cosmological constant boundary $w=-1$... |
1709.08825 | Gabriel Herczeg | Gabriel Herczeg | A Tour Through Shape Dynamic Black Holes | Thesis, 89 pages, 5 figures. This work draws heavily from
arXiv:1508.06704, arXiv:1410.4248, and arXiv:1310.6095 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Shape dynamics is a classical theory of gravity which agrees with general
relativity in many important cases, but possesses different gauge symmetries
and constraints. Rather than spacetime diffeomorphism invariance, shape
dynamics takes spatial diffeomorphism invariance and spatial Weyl invariance as
the fundamental... | [
{
"created": "Tue, 26 Sep 2017 04:34:53 GMT",
"version": "v1"
}
] | 2017-09-27 | [
[
"Herczeg",
"Gabriel",
""
]
] | Shape dynamics is a classical theory of gravity which agrees with general relativity in many important cases, but possesses different gauge symmetries and constraints. Rather than spacetime diffeomorphism invariance, shape dynamics takes spatial diffeomorphism invariance and spatial Weyl invariance as the fundamental g... |
0905.4639 | Grigory Volovik | G.E. Volovik | Particle decay in de Sitter spacetime via quantum tunneling | 5 pages, no figures, JETP Lett. style, version accepted in JETP Lett | JETP Lett.90:1-4,2009 | 10.1134/S0021364009130013 | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quantum tunneling process of decay of the composite particle in the de
Sitter vacuum looks as thermal radiation with the effective temperature twice
larger than the Hawking temperature associated with the cosmological horizon.
| [
{
"created": "Thu, 28 May 2009 13:13:05 GMT",
"version": "v1"
},
{
"created": "Fri, 29 May 2009 20:21:55 GMT",
"version": "v2"
},
{
"created": "Tue, 2 Jun 2009 09:49:10 GMT",
"version": "v3"
},
{
"created": "Thu, 4 Jun 2009 14:34:06 GMT",
"version": "v4"
}
] | 2010-02-22 | [
[
"Volovik",
"G. E.",
""
]
] | The quantum tunneling process of decay of the composite particle in the de Sitter vacuum looks as thermal radiation with the effective temperature twice larger than the Hawking temperature associated with the cosmological horizon. |
2001.05828 | Nelson Videla Dr. | Matias Lopez, Nelson Videla, Grigoris Panotopoulos | Dynamics of cosmological inflation and predictions for reheating in the
light of 2018 PLANCK results | 16 pages, 4 figures, submitted to EPJC | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the dynamics of two concrete inflationary models, namely Spontaneous
Symmetry Breaking Inflation as well as Loop Inflation. We constrain the
parameters for which a viable inflationary Universe emerges using the latest
PLANCK results of last year, and we give predictions for the duration of
reheating as well ... | [
{
"created": "Thu, 16 Jan 2020 14:56:56 GMT",
"version": "v1"
}
] | 2020-01-17 | [
[
"Lopez",
"Matias",
""
],
[
"Videla",
"Nelson",
""
],
[
"Panotopoulos",
"Grigoris",
""
]
] | We study the dynamics of two concrete inflationary models, namely Spontaneous Symmetry Breaking Inflation as well as Loop Inflation. We constrain the parameters for which a viable inflationary Universe emerges using the latest PLANCK results of last year, and we give predictions for the duration of reheating as well as... |
0806.1238 | Constantinos Skordis | Constantinos Skordis | Consistent cosmological modifications to the Einstein equations | 4 pages, 1 figure, 1 table | Phys.Rev.D79:123527,2009 | 10.1103/PhysRevD.79.123527 | pi-cosmo-82 | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General Relativity (GR) is a phenomenologically successful theory that rests
on firm foundations, but has not been tested on cosmological scales. The advent
of dark energy (and possibly even the requirement of cold dark matter), has
increased the need for testing modifications to GR, as the inference of such
otherwis... | [
{
"created": "Sun, 8 Jun 2008 02:10:33 GMT",
"version": "v1"
}
] | 2010-05-12 | [
[
"Skordis",
"Constantinos",
""
]
] | General Relativity (GR) is a phenomenologically successful theory that rests on firm foundations, but has not been tested on cosmological scales. The advent of dark energy (and possibly even the requirement of cold dark matter), has increased the need for testing modifications to GR, as the inference of such otherwise ... |
1411.3592 | Suzanne Lan\'ery | Suzanne Lan\'ery and Thomas Thiemann | Projective Loop Quantum Gravity I. State Space | 81 pages, many figures | J. Math. Phys. 57(12):122304 (2016) | 10.1063/1.4968205 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Instead of formulating the state space of a quantum field theory over one big
Hilbert space, it has been proposed by Kijowski to describe quantum states as
projective families of density matrices over a collection of smaller, simpler
Hilbert spaces. Beside the physical motivations for this approach, it could
help des... | [
{
"created": "Tue, 11 Nov 2014 22:55:43 GMT",
"version": "v1"
}
] | 2016-12-28 | [
[
"Lanéry",
"Suzanne",
""
],
[
"Thiemann",
"Thomas",
""
]
] | Instead of formulating the state space of a quantum field theory over one big Hilbert space, it has been proposed by Kijowski to describe quantum states as projective families of density matrices over a collection of smaller, simpler Hilbert spaces. Beside the physical motivations for this approach, it could help desig... |
1907.12216 | Shintaro Nakamura | Shintaro Nakamura, Ryotaro Kase, and Shinji Tsujikawa | Coupled vector dark energy | 18 pages, 3 figures, published version | JCAP12(2019)032 | 10.1088/1475-7516/2019/12/032 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide a general framework for studying the evolution of background and
cosmological perturbations in the presence of a vector field $A_{\mu}$ coupled
to cold dark matter (CDM). We consider an interacting Lagrangian of the form $Q
f(X) T_c$, where $Q$ is a coupling constant, $f$ is an arbitrary function of
$X=-A_... | [
{
"created": "Mon, 29 Jul 2019 05:05:31 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Dec 2019 18:49:19 GMT",
"version": "v2"
}
] | 2019-12-12 | [
[
"Nakamura",
"Shintaro",
""
],
[
"Kase",
"Ryotaro",
""
],
[
"Tsujikawa",
"Shinji",
""
]
] | We provide a general framework for studying the evolution of background and cosmological perturbations in the presence of a vector field $A_{\mu}$ coupled to cold dark matter (CDM). We consider an interacting Lagrangian of the form $Q f(X) T_c$, where $Q$ is a coupling constant, $f$ is an arbitrary function of $X=-A_{\... |
gr-qc/9710009 | Waldemar Puszkarz | Waldemar Puszkarz | Model of the gravitational dipole | Latex, 10 pages, minor typesetting corrections | null | null | null | gr-qc hep-th | null | A model of the gravitational dipole is proposed in a close analogy to that of
the global monopole. The physical properties and the range of validity of the
model are examined as is the motion of test particles in the dipole background.
It is found that the metric of the gravitational dipole describes a curved
space-t... | [
{
"created": "Thu, 2 Oct 1997 02:55:34 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Oct 1997 20:21:08 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Puszkarz",
"Waldemar",
""
]
] | A model of the gravitational dipole is proposed in a close analogy to that of the global monopole. The physical properties and the range of validity of the model are examined as is the motion of test particles in the dipole background. It is found that the metric of the gravitational dipole describes a curved space-tim... |
gr-qc/0411069 | N. David Mermin | N. David Mermin | From Einstein's 1905 Postulates to the Geometry of Flat Space-Time | A few typos and some obvious misstatements have been repaired. A
reference has been added. 18 pages, 12 figures. To appear in Annalen der
Physik (Leipzig) 14 (2005) [1-3], Special Topic Issue. Albert Einstein: His
Work and His Impact | Annalen Phys. 14 (2005) 1-3; Annalen Phys. 14 (2005) 103-114 | 10.1002/andp.200410122 | null | gr-qc physics.class-ph quant-ph | null | Minkowski diagrams in 1+1 dimensional flat space-time are given a strictly
geometric derivation, directly from two gedanken experiments incorporating the
principle of the constancy of the velocity of light and the principle of
(special) relativity. Rectangles of photon trajectories play a central role in
determining ... | [
{
"created": "Mon, 15 Nov 2004 02:15:12 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Nov 2004 16:57:37 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Mermin",
"N. David",
""
]
] | Minkowski diagrams in 1+1 dimensional flat space-time are given a strictly geometric derivation, directly from two gedanken experiments incorporating the principle of the constancy of the velocity of light and the principle of (special) relativity. Rectangles of photon trajectories play a central role in determining th... |
gr-qc/9303007 | null | M.Ferraris, M.Francaviglia and I.Volovich | The Universality of Einstein Equations | 15 pages, LaTeX, (Extended Version), TO-JLL-P1/93 | Class.Quant.Grav.11:1505-1517,1994 | 10.1088/0264-9381/11/6/015 | null | gr-qc hep-th | null | It is shown that for a wide class of analytic Lagrangians which depend only
on the scalar curvature of a metric and a connection, the application of the
so--called ``Palatini formalism'', i.e., treating the metric and the connection
as independent variables, leads to ``universal'' equations. If the dimension
$n$ of s... | [
{
"created": "Tue, 2 Mar 1993 22:21:00 GMT",
"version": "v1"
},
{
"created": "Fri, 7 May 1993 02:44:00 GMT",
"version": "v2"
}
] | 2010-12-13 | [
[
"Ferraris",
"M.",
""
],
[
"Francaviglia",
"M.",
""
],
[
"Volovich",
"I.",
""
]
] | It is shown that for a wide class of analytic Lagrangians which depend only on the scalar curvature of a metric and a connection, the application of the so--called ``Palatini formalism'', i.e., treating the metric and the connection as independent variables, leads to ``universal'' equations. If the dimension $n$ of spa... |
gr-qc/9303010 | Jorge Griego | Cayetano Di Bartolo, Rodolfo Gambini and Jorge Griego | The Extended Loop Group: An Infinite Dimensional Manifold Associated
with the Loop Space | The resubmited paper contains the title and abstract, that were
omitted in the previous version. 42 pages, report IFFI/93.01 | Commun.Math.Phys. 158 (1993) 217-240 | 10.1007/BF02108073 | null | gr-qc | null | A set of coordinates in the non parametric loop-space is introduced. We show
that these coordinates transform under infinite dimensional linear
representations of the diffeomorphism group. An extension of the group of loops
in terms of these objects is proposed. The enlarged group behaves locally as an
infinite dimen... | [
{
"created": "Thu, 4 Mar 1993 18:06:11 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Mar 1993 10:54:59 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Di Bartolo",
"Cayetano",
""
],
[
"Gambini",
"Rodolfo",
""
],
[
"Griego",
"Jorge",
""
]
] | A set of coordinates in the non parametric loop-space is introduced. We show that these coordinates transform under infinite dimensional linear representations of the diffeomorphism group. An extension of the group of loops in terms of these objects is proposed. The enlarged group behaves locally as an infinite dimensi... |
1711.05694 | Stephen Green | J\'er\'emie Gagnon-Bischoff, Stephen R. Green, Philippe Landry,
N\'estor Ortiz | Extended I-Love relations for slowly rotating neutron stars | 31 pages, 6 figures, 9 tables; v2: updated to match published version | Phys. Rev. D 97, 064042 (2018) | 10.1103/PhysRevD.97.064042 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Observations of gravitational waves from inspiralling neutron star
binaries---such as GW170817---can be used to constrain the nuclear equation of
state by placing bounds on stellar tidal deformability. For slowly rotating
neutron stars, the response to a weak quadrupolar tidal field is characterized
by four internal-... | [
{
"created": "Wed, 15 Nov 2017 17:41:20 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Apr 2018 17:27:38 GMT",
"version": "v2"
}
] | 2018-04-03 | [
[
"Gagnon-Bischoff",
"Jérémie",
""
],
[
"Green",
"Stephen R.",
""
],
[
"Landry",
"Philippe",
""
],
[
"Ortiz",
"Néstor",
""
]
] | Observations of gravitational waves from inspiralling neutron star binaries---such as GW170817---can be used to constrain the nuclear equation of state by placing bounds on stellar tidal deformability. For slowly rotating neutron stars, the response to a weak quadrupolar tidal field is characterized by four internal-st... |
gr-qc/9705066 | Hideo Kodama | Hideo Kodama(YITP, Kyoto University) | Canonical Structure of Locally Homogeneous Systems on Compact Closed
3-Manifolds of Types $E^3$, Nil and Sol | 62 pages, LaTeX | Prog.Theor.Phys. 99 (1998) 173-236 | 10.1143/PTP.99.173 | YITP-97-25 | gr-qc | null | In this paper we investigate the canonical structure of diffeomorphism
invariant phase spaces for spatially locally homogeneous spacetimes with
3-dimensional compact closed spaces. After giving a general algorithm to
express the diffeomorphism-invariant phase space and the canonical structure of
a locally homogeneous... | [
{
"created": "Mon, 26 May 1997 06:43:54 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Kodama",
"Hideo",
"",
"YITP, Kyoto University"
]
] | In this paper we investigate the canonical structure of diffeomorphism invariant phase spaces for spatially locally homogeneous spacetimes with 3-dimensional compact closed spaces. After giving a general algorithm to express the diffeomorphism-invariant phase space and the canonical structure of a locally homogeneous s... |
2007.03012 | Artyom Astashenok V | Artyom V. Astashenok, Sergei D. Odintsov | Neutron Stars in f(R)-Gravity and Its Extension with a Scalar Axion
Field | In special issue {\guillemotleft}Selected Papers from "The Modern
Physics of Compact Stars and Relativistic Gravity 2019"{\guillemotright} | Particles 2020, 3(3), 532-542 | 10.3390/particles3030036 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a brief review of general results about non-rotating neutron stars
in simple R-square gravity and its extension with a scalar axion field.
Modified Einstein equations are presented for metrics in isotropical
coordinates. The mass-radius relation, mass profile and dependence of mass from
central density on ... | [
{
"created": "Mon, 6 Jul 2020 18:58:12 GMT",
"version": "v1"
}
] | 2020-07-08 | [
[
"Astashenok",
"Artyom V.",
""
],
[
"Odintsov",
"Sergei D.",
""
]
] | We present a brief review of general results about non-rotating neutron stars in simple R-square gravity and its extension with a scalar axion field. Modified Einstein equations are presented for metrics in isotropical coordinates. The mass-radius relation, mass profile and dependence of mass from central density on va... |
2103.03845 | Icaro Daniel Dias De Carvalho | I. D. D. Carvalho, G. Alencar, W. M. Mendes, R. R. Landim | The gravitational bending angle by static and spherically symmetric
black holes in bumblebee gravity | 7 pages, 1 figure, Minor corrections, typos fixed, references added | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work investigates the influence of the Lorentz symmetry breaking in the
bending angle of massive particles and light for bumblebee black hole
solutions. The solutions analyzed break the Lorentz symmetry due to a non-zero
vacuum expectation value of the bumblebee field. We use the Ishihara method,
which allows us... | [
{
"created": "Fri, 5 Mar 2021 17:59:59 GMT",
"version": "v1"
},
{
"created": "Sat, 27 Mar 2021 21:24:16 GMT",
"version": "v2"
},
{
"created": "Mon, 17 May 2021 16:22:31 GMT",
"version": "v3"
}
] | 2021-05-18 | [
[
"Carvalho",
"I. D. D.",
""
],
[
"Alencar",
"G.",
""
],
[
"Mendes",
"W. M.",
""
],
[
"Landim",
"R. R.",
""
]
] | This work investigates the influence of the Lorentz symmetry breaking in the bending angle of massive particles and light for bumblebee black hole solutions. The solutions analyzed break the Lorentz symmetry due to a non-zero vacuum expectation value of the bumblebee field. We use the Ishihara method, which allows us t... |
gr-qc/0003051 | Piotr Jaranowski | Thibault Damour, Piotr Jaranowski, and Gerhard Sch\"afer | Poincar\'e invariance in the ADM Hamiltonian approach to the general
relativistic two-body problem | REVTeX, 7 pages; two inadvertently omitted terms in Eq. (12) are
added | Phys.Rev.D62:021501,2000; Erratum-ibid.D63:029903,2001 | 10.1103/PhysRevD.62.021501 10.1103/PhysRevD.63.029903 | null | gr-qc | null | A previously found momentum-dependent regularization ambiguity in the third
post-Newtonian two point-mass Arnowitt-Deser-Misner Hamiltonian is shown to be
uniquely determined by requiring global Poincar\'e invariance. The phase-space
generators realizing the Poincar\'e algebra are explicitly constructed.
| [
{
"created": "Mon, 13 Mar 2000 17:35:38 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Apr 2000 17:24:44 GMT",
"version": "v2"
},
{
"created": "Sat, 21 Oct 2000 15:30:19 GMT",
"version": "v3"
}
] | 2014-11-17 | [
[
"Damour",
"Thibault",
""
],
[
"Jaranowski",
"Piotr",
""
],
[
"Schäfer",
"Gerhard",
""
]
] | A previously found momentum-dependent regularization ambiguity in the third post-Newtonian two point-mass Arnowitt-Deser-Misner Hamiltonian is shown to be uniquely determined by requiring global Poincar\'e invariance. The phase-space generators realizing the Poincar\'e algebra are explicitly constructed. |
1903.02049 | Eric Gourgoulhon | Eric Gourgoulhon, Alexandre Le Tiec, Frederic H. Vincent, Niels
Warburton | Gravitational waves from bodies orbiting the Galactic Center black hole
and their detectability by LISA | 27 pages, 22 figures, accepted for publication in Astronomy and
Astrophysics; text slightly modified and figures added/changed with respect
to v2; see related paper by Amaro-Seoane 2019, arXiv:1903.10871 | A&A 627, A92 (2019) | 10.1051/0004-6361/201935406 | null | gr-qc astro-ph.HE astro-ph.SR | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We present the first fully relativistic study of gravitational radiation from
bodies in circular equatorial orbits around the massive black hole at the
Galactic Center, Sgr A* and we assess the detectability of various kinds of
objects by the gravitational wave detector LISA. Our computations are based on
the theory ... | [
{
"created": "Tue, 5 Mar 2019 20:48:21 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Mar 2019 13:48:06 GMT",
"version": "v2"
},
{
"created": "Sun, 9 Jun 2019 10:57:01 GMT",
"version": "v3"
}
] | 2019-07-17 | [
[
"Gourgoulhon",
"Eric",
""
],
[
"Tiec",
"Alexandre Le",
""
],
[
"Vincent",
"Frederic H.",
""
],
[
"Warburton",
"Niels",
""
]
] | We present the first fully relativistic study of gravitational radiation from bodies in circular equatorial orbits around the massive black hole at the Galactic Center, Sgr A* and we assess the detectability of various kinds of objects by the gravitational wave detector LISA. Our computations are based on the theory of... |
1202.3525 | Yen-Kheng Lim | Yen-Kheng Lim | Warped branches of flux compactifications | 25 pages, 2 figures | Phys. Rev. D 85, 064027 (2012) | 10.1103/PhysRevD.85.064027 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Freund-Rubin-type compactifications which are described by
(p+q)-dimensional Einstein gravity with a positive cosmological constant and a
q-form flux. Using perturbative expansions of Kinoshita's ansatz for warped
dS_pxS^q and AdS_pxS^q spacetimes, we obtain analytical solutions describing
the warped bran... | [
{
"created": "Thu, 16 Feb 2012 08:06:18 GMT",
"version": "v1"
}
] | 2012-03-22 | [
[
"Lim",
"Yen-Kheng",
""
]
] | We consider Freund-Rubin-type compactifications which are described by (p+q)-dimensional Einstein gravity with a positive cosmological constant and a q-form flux. Using perturbative expansions of Kinoshita's ansatz for warped dS_pxS^q and AdS_pxS^q spacetimes, we obtain analytical solutions describing the warped branch... |
gr-qc/0504098 | Sunil Maharaj | M. Chaisi and S. D. Maharaj | Compact anisotropic spheres with prescribed energy density | 22 pages, 3 figures, to appear in Gen. Rel. Grav | Gen.Rel.Grav. 37 (2005) 1177-1189 | 10.1007/s10714-005-0102-3 | null | gr-qc | null | New exact interior solutions to the Einstein field equations for anisotropic
spheres are found. We utilise a procedure that necessitates a choice for the
energy density and the radial pressure. This class contains the constant
density model of Maharaj and Maartens (Gen. Rel. Grav., Vol 21, 899-905, 1989)
and the vari... | [
{
"created": "Thu, 21 Apr 2005 04:26:37 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Chaisi",
"M.",
""
],
[
"Maharaj",
"S. D.",
""
]
] | New exact interior solutions to the Einstein field equations for anisotropic spheres are found. We utilise a procedure that necessitates a choice for the energy density and the radial pressure. This class contains the constant density model of Maharaj and Maartens (Gen. Rel. Grav., Vol 21, 899-905, 1989) and the variab... |
1912.10923 | Luis Cesar Nunes Dos Santos | L. C. N. Santos, C. E. Mota, C. C. Barros Jr., L. B. Castro, V. B.
Bezerra | Quantum dynamics of scalar particles in the space-time of a cosmic
string in the context of gravity's rainbow | null | Ann. Phys. (N.Y.) 421 (2020) 168276 | 10.1016/j.aop.2020.168276 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the dynamics of scalar particles in gravity's rainbow considering
the space-time of a cosmic string in this modified gravity. Thus, we solve the
Klein-Gordon equation for two types of potential in which two possible rainbow
functions are selected. In all cases studied we obtain exact solutions for the
wave... | [
{
"created": "Thu, 19 Dec 2019 14:32:24 GMT",
"version": "v1"
}
] | 2020-12-16 | [
[
"Santos",
"L. C. N.",
""
],
[
"Mota",
"C. E.",
""
],
[
"Barros",
"C. C.",
"Jr."
],
[
"Castro",
"L. B.",
""
],
[
"Bezerra",
"V. B.",
""
]
] | We analyze the dynamics of scalar particles in gravity's rainbow considering the space-time of a cosmic string in this modified gravity. Thus, we solve the Klein-Gordon equation for two types of potential in which two possible rainbow functions are selected. In all cases studied we obtain exact solutions for the wave e... |
gr-qc/9604041 | Berezhiani Vazha | A. D. Rogava and G. R. Khujadze | General-relativistic Model of Magnetically Driven Jet | 12 pages, LaTex, no figures | null | 10.1023/A:1010220902325 | null | gr-qc | null | The general scheme for the construction of the general-relativistic model of
the magnetically driven jet is suggested. The method is based on the usage of
the 3+1 MHD formalism. It is shown that the critical points of the flow and the
explicit radial behavior of the physical variables may be derived through the
jet `... | [
{
"created": "Mon, 22 Apr 1996 14:24:50 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Rogava",
"A. D.",
""
],
[
"Khujadze",
"G. R.",
""
]
] | The general scheme for the construction of the general-relativistic model of the magnetically driven jet is suggested. The method is based on the usage of the 3+1 MHD formalism. It is shown that the critical points of the flow and the explicit radial behavior of the physical variables may be derived through the jet ``p... |
2003.08204 | Lorenzo Sebastiani | Alessandro Casalino, Lorenzo Sebastiani, and Sergio Zerbini | A note on non singular Einstein-Aether cosmologies | 12 pages, final version, accepted in PRD | null | 10.1103/PhysRevD.101.104059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An effective Lagrangian approach based on an extended Einstein-Aether (EA)
model is presented and formulated in a generic non flat
Fridman-Lemaitre-Robertson-Walker (FLRW) space-time. For a flat FLRW
space-time, a Friedmann equation similar to the one obtained in Quantum Loop
Cosmology (QLC) is reproduced, with relat... | [
{
"created": "Tue, 17 Mar 2020 15:25:39 GMT",
"version": "v1"
},
{
"created": "Wed, 20 May 2020 12:49:15 GMT",
"version": "v2"
}
] | 2020-06-10 | [
[
"Casalino",
"Alessandro",
""
],
[
"Sebastiani",
"Lorenzo",
""
],
[
"Zerbini",
"Sergio",
""
]
] | An effective Lagrangian approach based on an extended Einstein-Aether (EA) model is presented and formulated in a generic non flat Fridman-Lemaitre-Robertson-Walker (FLRW) space-time. For a flat FLRW space-time, a Friedmann equation similar to the one obtained in Quantum Loop Cosmology (QLC) is reproduced, with related... |
2310.08010 | Jiang Qing-Quan | Ping-Hui Mou, Qing-Quan Jiang, Ke-Jian He and Guo-Ping Li | Triple points and phase transitions of D-dimensional dyonic AdS black
holes with quasitopological electromagnetism in Einstein-Gauss-Bonnet gravity | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | By considering the negative cosmological constant {\Lambda} as a
thermodynamic pressure, we study the thermodynamics and phase transitions of
the D-dimensional dyonic AdS black holes (BHs) with quasitopological
electromagnetism in Einstein-Gauss-Bonnet (EGB) gravity. The results indicate
that the small/large BH phase... | [
{
"created": "Thu, 12 Oct 2023 03:22:05 GMT",
"version": "v1"
}
] | 2023-10-13 | [
[
"Mou",
"Ping-Hui",
""
],
[
"Jiang",
"Qing-Quan",
""
],
[
"He",
"Ke-Jian",
""
],
[
"Li",
"Guo-Ping",
""
]
] | By considering the negative cosmological constant {\Lambda} as a thermodynamic pressure, we study the thermodynamics and phase transitions of the D-dimensional dyonic AdS black holes (BHs) with quasitopological electromagnetism in Einstein-Gauss-Bonnet (EGB) gravity. The results indicate that the small/large BH phase t... |
2003.11828 | Cosimo Bambi | Bakhtiyor Narzilloev, Daniele Malafarina, Ahmadjon Abdujabbarov,
Cosimo Bambi | On the properties of a deformed extension of the NUT space-time | 11 pages, 7 figures. v2: refereed version | Eur. Phys. J. C (2020) 80:784 | 10.1140/epjc/s10052-020-8370-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a class of space-times given by a stationary extension of the
Zipoy-Voorhees metric that was found by Halilsoy. We show that the solutions do
not describe rotating sources but must be interpreted, similarly to the NUT
case, as deformed sources endowed with a gravitomagnetic charge. We show that
the Halils... | [
{
"created": "Thu, 26 Mar 2020 10:58:11 GMT",
"version": "v1"
},
{
"created": "Sun, 30 Aug 2020 01:25:46 GMT",
"version": "v2"
}
] | 2020-09-01 | [
[
"Narzilloev",
"Bakhtiyor",
""
],
[
"Malafarina",
"Daniele",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
],
[
"Bambi",
"Cosimo",
""
]
] | We consider a class of space-times given by a stationary extension of the Zipoy-Voorhees metric that was found by Halilsoy. We show that the solutions do not describe rotating sources but must be interpreted, similarly to the NUT case, as deformed sources endowed with a gravitomagnetic charge. We show that the Halilsoy... |
2109.11878 | Alexander Simpson | Alex Simpson | Ringing of the regular black hole with asymptotically Minkowski core | V1: 29 pages, 5 figures, 2 tables, 61 references. V2: Still 29 pages,
5 figures, 2 tables, now 63 references | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Regge--Wheeler analysis is performed for a novel black hole mimicker `the
regular black hole with asymptotically Minkowski core', followed by an
approximation of the permitted quasi-normal modes for propagating waveforms. A
first-order WKB approximation is computed for spin zero and spin one
perturbations of the ca... | [
{
"created": "Fri, 24 Sep 2021 10:49:34 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Oct 2021 19:57:14 GMT",
"version": "v2"
}
] | 2021-10-06 | [
[
"Simpson",
"Alex",
""
]
] | A Regge--Wheeler analysis is performed for a novel black hole mimicker `the regular black hole with asymptotically Minkowski core', followed by an approximation of the permitted quasi-normal modes for propagating waveforms. A first-order WKB approximation is computed for spin zero and spin one perturbations of the cand... |
1601.06771 | Ragab Gad | Ragab M. Gad and A. E. Al Mazrooei | On Axially Symmetric Space-Times Admitting Homothetic Vector Fields in
Lyra's Geometry | 15 pages, 0 figures | Can.J. Phys. 94, 1148-1152 (2016) | 10.1139/cjp-2016-0114 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper investigates axially symmetric space-times that admit a homothetic
vector field based on Lyra's geometry. The cases when the displacement vector
is a function of $t$ and when it is constant are studied. In the context of
this geometry, we find and classify the solutions of the Einstein's field
equations (E... | [
{
"created": "Sat, 23 Jan 2016 11:27:24 GMT",
"version": "v1"
},
{
"created": "Sat, 31 Mar 2018 11:17:39 GMT",
"version": "v2"
}
] | 2018-04-03 | [
[
"Gad",
"Ragab M.",
""
],
[
"Mazrooei",
"A. E. Al",
""
]
] | This paper investigates axially symmetric space-times that admit a homothetic vector field based on Lyra's geometry. The cases when the displacement vector is a function of $t$ and when it is constant are studied. In the context of this geometry, we find and classify the solutions of the Einstein's field equations (EFE... |
2006.13640 | M. Ghasemi-Nodehi | M. Ghasemi-Nodehi | Iron line reverberation mapping in Ghasemi-Nodehi-Bambi background | Published | Eur.Phys.J.C 80 (2020) 6, 529 | 10.1140/epjc/s10052-020-8087-3 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The reverberation associated with the iron line is the time lag between
direct photons from the corona and the photons reflected from the disk. The
resulting line spectrum is called the 2D transfer function. The shape of the 2D
transfer function is determined by the geometry of spacetime and the properties
of BH. In ... | [
{
"created": "Wed, 24 Jun 2020 11:26:27 GMT",
"version": "v1"
}
] | 2020-07-15 | [
[
"Ghasemi-Nodehi",
"M.",
""
]
] | The reverberation associated with the iron line is the time lag between direct photons from the corona and the photons reflected from the disk. The resulting line spectrum is called the 2D transfer function. The shape of the 2D transfer function is determined by the geometry of spacetime and the properties of BH. In a ... |
2003.09419 | Alexander Simpson | Francisco S. N. Lobo (Universidade de Lisboa), Alex Simpson (Victoria
University of Wellington), and Matt Visser (Victoria University of
Wellington) | Dynamic thin-shell black-bounce traversable wormholes | 21 pages, 13 figures; V1 modified 31/03/2020, 10 references added,
introduction extended; V2 modified 18/06/2020, two figures amended,
conclusion extended. V3 is now aligned with the published version other than
cosmetic features in the references | Phys. Rev. D 101, 124035 (2020) | 10.1103/PhysRevD.101.124035 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the recently introduced black-bounce spacetimes, we shall consider
the construction of the related spherically symmetric thin-shell traversable
wormholes within the context of standard general relativity. All of the really
unusual physics is encoded in one simple parameter $a$ which characterizes the
scale o... | [
{
"created": "Mon, 23 Mar 2020 03:24:18 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Mar 2020 02:57:53 GMT",
"version": "v2"
},
{
"created": "Sun, 21 Jun 2020 22:20:46 GMT",
"version": "v3"
}
] | 2020-06-23 | [
[
"Lobo",
"Francisco S. N.",
"",
"Universidade de Lisboa"
],
[
"Simpson",
"Alex",
"",
"Victoria\n University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of\n Wellington"
]
] | Based on the recently introduced black-bounce spacetimes, we shall consider the construction of the related spherically symmetric thin-shell traversable wormholes within the context of standard general relativity. All of the really unusual physics is encoded in one simple parameter $a$ which characterizes the scale of ... |
gr-qc/0410107 | Vitor Cardoso | Vitor Cardoso, Jose' P. S. Lemos, Shijun Yoshida | Quasinormal modes and stability of the rotating acoustic black hole:
numerical analysis | 6 pages, ReVTeX4. v2. References added | Phys.Rev. D70 (2004) 124032 | 10.1103/PhysRevD.70.124032 | null | gr-qc astro-ph hep-ph hep-th physics.flu-dyn | null | The study of the quasinormal modes (QNMs) of the 2+1 dimensional rotating
draining bathtub acoustic black hole, the closest analogue found so far to the
Kerr black hole, is performed. Both the real and imaginary parts of the
quasinormal (QN) frequencies as a function of the rotation parameter B are
found through a fu... | [
{
"created": "Thu, 21 Oct 2004 06:29:15 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Oct 2004 10:05:22 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Cardoso",
"Vitor",
""
],
[
"Lemos",
"Jose' P. S.",
""
],
[
"Yoshida",
"Shijun",
""
]
] | The study of the quasinormal modes (QNMs) of the 2+1 dimensional rotating draining bathtub acoustic black hole, the closest analogue found so far to the Kerr black hole, is performed. Both the real and imaginary parts of the quasinormal (QN) frequencies as a function of the rotation parameter B are found through a full... |
gr-qc/9709041 | null | Elena Cuoco, Giuseppe Curci (Department of Physics, Pisa University),
Matteo Beccaria (Department of Physics, Lecce University) | Adaptive Identification of VIRGO-like Noise Spectrum | 5 pages of LaTeX file and figures (using epsfig) in uuencoded
compressed tar PostScript files. Poster given at the "Second Amaldi
Conference on Gravitational Waves" (CERN, 1-4 July 1997). To be published in
the Proceedings (World Scientific, Singapore), eds. E. Coccia et al | null | null | null | gr-qc astro-ph | null | The aim of this work is to show how it is possible to build an on line
whitening filter in an adaptive way. We have modeled the VIRGO noise spectrum
as an autoregressive stochastic process, after a pre-filtering of the
theoretical curve which flattens the low frequency part of the spectrum. We
have tested some very p... | [
{
"created": "Tue, 16 Sep 1997 14:45:18 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cuoco",
"Elena",
"",
"Department of Physics, Pisa University"
],
[
"Curci",
"Giuseppe",
"",
"Department of Physics, Pisa University"
],
[
"Beccaria",
"Matteo",
"",
"Department of Physics, Lecce University"
]
] | The aim of this work is to show how it is possible to build an on line whitening filter in an adaptive way. We have modeled the VIRGO noise spectrum as an autoregressive stochastic process, after a pre-filtering of the theoretical curve which flattens the low frequency part of the spectrum. We have tested some very pop... |
0706.0904 | Sascha Husa | Sascha Husa, Mark Hannam, Jose A. Gonzalez, Ulrich Sperhake, Bernd
Bruegmann | Reducing eccentricity in black-hole binary evolutions with initial
parameters from post-Newtonian inspiral | 6 pages, 3 figures, 1 table | Phys.Rev.D77:044037,2008 | 10.1103/PhysRevD.77.044037 | null | gr-qc | null | Standard choices of quasi-circular orbit parameters for black-hole binary
evolutions result in eccentric inspiral. We introduce a conceptually simple
method, which is to integrate the post-Newtonian equations of motion through
hundreds of orbits, and read off the values of the momenta at the separation at
which we wi... | [
{
"created": "Thu, 7 Jun 2007 18:28:29 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Husa",
"Sascha",
""
],
[
"Hannam",
"Mark",
""
],
[
"Gonzalez",
"Jose A.",
""
],
[
"Sperhake",
"Ulrich",
""
],
[
"Bruegmann",
"Bernd",
""
]
] | Standard choices of quasi-circular orbit parameters for black-hole binary evolutions result in eccentric inspiral. We introduce a conceptually simple method, which is to integrate the post-Newtonian equations of motion through hundreds of orbits, and read off the values of the momenta at the separation at which we wish... |
2106.05205 | Daniele Gregoris | Daniele Gregoris, Yen Chin Ong, Bin Wang | A Critical Assessment of Black Hole Solutions With a Linear Term in
Their Redshift Function | Matches published version | Eur. Phys. J. C (2021) 81:684 | 10.1140/epjc/s10052-021-09464-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Different theories of gravity can admit the same black hole solution, but the
parameters usually have different physical interpretations. In this work we
study in depth the linear term $\beta r$ in the redshift function of black
holes, which arises in conformal gravity, de Rham-Gabadadze-Tolley (dRGT)
massive gravity... | [
{
"created": "Wed, 9 Jun 2021 16:46:49 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Aug 2021 14:17:30 GMT",
"version": "v2"
}
] | 2021-08-04 | [
[
"Gregoris",
"Daniele",
""
],
[
"Ong",
"Yen Chin",
""
],
[
"Wang",
"Bin",
""
]
] | Different theories of gravity can admit the same black hole solution, but the parameters usually have different physical interpretations. In this work we study in depth the linear term $\beta r$ in the redshift function of black holes, which arises in conformal gravity, de Rham-Gabadadze-Tolley (dRGT) massive gravity, ... |
gr-qc/0202039 | Taylan Yetkin | Ali Havare, Taylan Yetkin, Murat Korunur | Creation of Spin-1/2 Particles in the Hyperboloid de Sitter Space-Time | 5 pages, no figures, presented at the 1st Int. Hellenic&Turkish Phys.
Conf | Nucl.Phys. B682 (2004) 457-464 | 10.1016/j.nuclphysb.2004.01.016 | null | gr-qc | null | In this work we solve Dirac equation by using the method of seperation of
variables. Then we analyzed the particle creation process. To compute the
density number of particles created Bogoliubov transformation technique is
used.
| [
{
"created": "Tue, 12 Feb 2002 08:50:32 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Havare",
"Ali",
""
],
[
"Yetkin",
"Taylan",
""
],
[
"Korunur",
"Murat",
""
]
] | In this work we solve Dirac equation by using the method of seperation of variables. Then we analyzed the particle creation process. To compute the density number of particles created Bogoliubov transformation technique is used. |
gr-qc/0204017 | Matt Visser | Matt Visser (Washington University in Saint Louis), Carlos Barcelo
(Portsmouth University), Stefano Liberati (University of Maryland) | Bi-refringence versus bi-metricity | Revtex 4; 10 pages in double-column format; contribution to the
Festschrift in honour of Professor Mario Novello | null | null | null | gr-qc hep-th | null | In this article we carefully distinguish the notion of bi-refringence (a
polarization-dependent doubling in photon propagation speeds) from that of
bi-metricity (where the two photon polarizations ``see'' two distinct metrics).
We emphasise that these notions are logically distinct, though there are
special symmetrie... | [
{
"created": "Thu, 4 Apr 2002 02:25:15 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Visser",
"Matt",
"",
"Washington University in Saint Louis"
],
[
"Barcelo",
"Carlos",
"",
"Portsmouth University"
],
[
"Liberati",
"Stefano",
"",
"University of Maryland"
]
] | In this article we carefully distinguish the notion of bi-refringence (a polarization-dependent doubling in photon propagation speeds) from that of bi-metricity (where the two photon polarizations ``see'' two distinct metrics). We emphasise that these notions are logically distinct, though there are special symmetries ... |
1509.07683 | Hugo Ferreira | Hugo R. C. Ferreira | Quantum field theory on rotating black hole spacetimes | PhD thesis submitted to the University of Nottingham | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This thesis is concerned with the development of a general method to compute
renormalised local observables for quantum matter fields, in a given quantum
state, on a rotating black hole spacetime. The rotating black hole may be
surrounded by a Dirichlet mirror, if necessary, such that a regular,
isometry-invariant va... | [
{
"created": "Fri, 25 Sep 2015 11:28:42 GMT",
"version": "v1"
}
] | 2015-09-28 | [
[
"Ferreira",
"Hugo R. C.",
""
]
] | This thesis is concerned with the development of a general method to compute renormalised local observables for quantum matter fields, in a given quantum state, on a rotating black hole spacetime. The rotating black hole may be surrounded by a Dirichlet mirror, if necessary, such that a regular, isometry-invariant vacu... |
gr-qc/0505064 | Joseph Plowman | Joseph E. Plowman, Ronald W. Hellings | LATOR Covariance Analysis | 9 pages, 3 figures. first revision: minor changes to results. Second
revision: additional discussion of orbit modelling and LATOR drag-free system
requirement feasibility. Added references to tables I and V (which list PPN
parameter uncertainties), removed word from sentence in Section III. 3rd
revision: remove... | Class.Quant.Grav. 23 (2006) 309-318 | 10.1088/0264-9381/23/2/002 | null | gr-qc | null | We present results from a covariance study for the proposed Laser Astrometric
Test of Relativity (LATOR) mission. This mission would send two
laser-transmitter spacecraft behind the Sun and measure the relative
gravitational light bending of their signals using a hundred-meter-baseline
optical interferometer to be co... | [
{
"created": "Thu, 12 May 2005 22:02:44 GMT",
"version": "v1"
},
{
"created": "Thu, 26 May 2005 23:03:57 GMT",
"version": "v2"
},
{
"created": "Mon, 17 Oct 2005 20:51:58 GMT",
"version": "v3"
},
{
"created": "Fri, 13 Jan 2006 20:49:19 GMT",
"version": "v4"
}
] | 2009-11-11 | [
[
"Plowman",
"Joseph E.",
""
],
[
"Hellings",
"Ronald W.",
""
]
] | We present results from a covariance study for the proposed Laser Astrometric Test of Relativity (LATOR) mission. This mission would send two laser-transmitter spacecraft behind the Sun and measure the relative gravitational light bending of their signals using a hundred-meter-baseline optical interferometer to be cons... |
2402.05344 | Adailton Ara\'ujo Filho | Yassine Sekhmani, A. A. Ara\'ujo Filho, Ratbay Myrzakulov, Adam Z.
Kaczmarek, Javlon Rayimbaev, Dominik Szcz\c{e}\'sniak | Dark matter effects of a black hole with nonsingular Yukawa-modified
potential in Einstein-Gauss-Bonnet Gravity | 30 pages, 8 tables, and 5 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper investigates the contribution of the nonsingular Yukawa-modified
potential in the context of four-dimensional Einstein-Gauss-Bonnet (EGB)
gravity modeling by a static and spherically symmetric black hole solution.
These Yukawa-type corrections are essentially described along two parameters,
$\beta$ and $\l... | [
{
"created": "Thu, 8 Feb 2024 01:23:22 GMT",
"version": "v1"
}
] | 2024-02-09 | [
[
"Sekhmani",
"Yassine",
""
],
[
"Filho",
"A. A. Araújo",
""
],
[
"Myrzakulov",
"Ratbay",
""
],
[
"Kaczmarek",
"Adam Z.",
""
],
[
"Rayimbaev",
"Javlon",
""
],
[
"Szczȩśniak",
"Dominik",
""
]
] | This paper investigates the contribution of the nonsingular Yukawa-modified potential in the context of four-dimensional Einstein-Gauss-Bonnet (EGB) gravity modeling by a static and spherically symmetric black hole solution. These Yukawa-type corrections are essentially described along two parameters, $\beta$ and $\lam... |
2105.04739 | Tanmaya Mishra | Tanmaya Mishra, Brendan O'Brien, V. Gayathri, Marek Szczepanczyk,
Shubhagata Bhaumik, Imre Bartos and Sergey Klimenko | Optimization of model independent gravitational wave search using
machine learning | 10 pages, 6 figures | Phys. Rev. D 104, 023014 (2021) | 10.1103/PhysRevD.104.023014 | LIGO-P2100101 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Coherent WaveBurst (cWB) search algorithm identifies generic
gravitational wave (GW) signals in the LIGO-Virgo strain data. We propose a
machine learning (ML) method to optimize the pipeline sensitivity to the
special class of GW signals known as binary black hole (BBH) mergers. Here, we
test the ML-enhanced cWB ... | [
{
"created": "Tue, 11 May 2021 01:17:25 GMT",
"version": "v1"
}
] | 2021-07-21 | [
[
"Mishra",
"Tanmaya",
""
],
[
"O'Brien",
"Brendan",
""
],
[
"Gayathri",
"V.",
""
],
[
"Szczepanczyk",
"Marek",
""
],
[
"Bhaumik",
"Shubhagata",
""
],
[
"Bartos",
"Imre",
""
],
[
"Klimenko",
"Sergey",
""
]
... | The Coherent WaveBurst (cWB) search algorithm identifies generic gravitational wave (GW) signals in the LIGO-Virgo strain data. We propose a machine learning (ML) method to optimize the pipeline sensitivity to the special class of GW signals known as binary black hole (BBH) mergers. Here, we test the ML-enhanced cWB se... |
2110.02293 | Tucker Manton | Damien A. Easson, Tucker Manton, Andrew Svesko | Sources in the Weyl double copy | 5 pages, to appear in PRL | null | 10.1103/PhysRevLett.127.271101 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The Weyl double copy relates exact solutions in general relativity to exact
solutions in gauge theory, formulated in the spinorial language. To date, the
Weyl double copy is understood and employed only for vacuum spacetimes, and
hence only to vacuum gauge theories. In this letter, we propose an extension to
the Weyl... | [
{
"created": "Tue, 5 Oct 2021 18:57:49 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Dec 2021 17:07:12 GMT",
"version": "v2"
}
] | 2022-01-05 | [
[
"Easson",
"Damien A.",
""
],
[
"Manton",
"Tucker",
""
],
[
"Svesko",
"Andrew",
""
]
] | The Weyl double copy relates exact solutions in general relativity to exact solutions in gauge theory, formulated in the spinorial language. To date, the Weyl double copy is understood and employed only for vacuum spacetimes, and hence only to vacuum gauge theories. In this letter, we propose an extension to the Weyl d... |
gr-qc/0305037 | Jose' P. S. Lemos | Vitor Cardoso, Roman Konoplya, Jose' P. S. Lemos | Quasinormal frequencies of Schwarzschild black holes in anti-de Sitter
spacetimes: A complete study on the asymptotic behavior | 22 pages | Phys.Rev.D68:044024,2003 | 10.1103/PhysRevD.68.044024 | null | gr-qc astro-ph hep-th | null | We present a thorough analysis for the quasinormal (QN) behavior, associated
with the decay of scalar, electromagnetic and gravitational perturbations, of
Schwarzschild-anti-de Sitter black holes. As it is known the anti-de Sitter
(AdS) QN spectrum crucially depends on the relative size of the black hole to
the AdS r... | [
{
"created": "Fri, 9 May 2003 19:56:04 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Jul 2003 22:45:07 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Cardoso",
"Vitor",
""
],
[
"Konoplya",
"Roman",
""
],
[
"Lemos",
"Jose' P. S.",
""
]
] | We present a thorough analysis for the quasinormal (QN) behavior, associated with the decay of scalar, electromagnetic and gravitational perturbations, of Schwarzschild-anti-de Sitter black holes. As it is known the anti-de Sitter (AdS) QN spectrum crucially depends on the relative size of the black hole to the AdS rad... |
1304.5915 | K G Arun | Chandra Kant Mishra, K G Arun, Bala R Iyer | 2.5PN kick from black-hole binaries in circular orbit: Nonspinning case | To appear in Proceedings of "Relativity and Gravitation - 100 Years
after Einstein in Prague" Ed. J. Bicak (2013) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the Multipolar post-Minskowskian formalism, we compute the linear
momentum flux from black-hole binaries in circular orbits and having no spins.
The total linear momentum flux contains various types of instantaneous (which
are functions of the retarded time) and hereditary (which depends on the
dynamics of the ... | [
{
"created": "Mon, 22 Apr 2013 11:12:40 GMT",
"version": "v1"
}
] | 2013-04-23 | [
[
"Mishra",
"Chandra Kant",
""
],
[
"Arun",
"K G",
""
],
[
"Iyer",
"Bala R",
""
]
] | Using the Multipolar post-Minskowskian formalism, we compute the linear momentum flux from black-hole binaries in circular orbits and having no spins. The total linear momentum flux contains various types of instantaneous (which are functions of the retarded time) and hereditary (which depends on the dynamics of the bi... |
1912.09945 | Jacopo Niedda | Federico Di Gioia, Giulia Maniccia, Giovanni Montani, Jacopo Niedda | Non-Unitarity Problem in Quantum Gravity Corrections to Quantum Field
Theory with Born-Oppenheimer Approximation | 24 pages, no figures. Little adjustments, improved bibliography | Phys. Rev. D 103, 103511 (2021) | 10.1103/PhysRevD.103.103511 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The problem of time is one of the most relevant open issues in canonical
quantum gravity. Although there is a huge literature about this topic, a
commonly accepted solution has not been found yet. Here, we focus on the
semiclassical approach to the problem of time, that has the main goal of
reproducing quantum field ... | [
{
"created": "Fri, 20 Dec 2019 17:09:42 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Apr 2020 22:29:42 GMT",
"version": "v2"
},
{
"created": "Sun, 7 Feb 2021 18:40:21 GMT",
"version": "v3"
},
{
"created": "Thu, 13 May 2021 12:56:10 GMT",
"version": "v4"
}
] | 2021-05-18 | [
[
"Di Gioia",
"Federico",
""
],
[
"Maniccia",
"Giulia",
""
],
[
"Montani",
"Giovanni",
""
],
[
"Niedda",
"Jacopo",
""
]
] | The problem of time is one of the most relevant open issues in canonical quantum gravity. Although there is a huge literature about this topic, a commonly accepted solution has not been found yet. Here, we focus on the semiclassical approach to the problem of time, that has the main goal of reproducing quantum field th... |
gr-qc/0510056 | Steven Carlip | S. Carlip | Reply to ``Comment on Model-dependence of Shapiro time delay and the
`speed of gravity/speed of light' controversy'' | 3 page reply to gr-qc/0510048 | Class.Quant.Grav.22:5187-5190,2005 | 10.1088/0264-9381/22/23/N02 | UCD-05-12 | gr-qc | null | To determine whether the Shapiro time delay of light passing near a moving
object depends on the ``speed of gravity'' or the ``speed of light,'' one must
analyze observations in a bimetric framework in which these two speeds can be
different. In a recent comment (gr-qc/0510048), Kopeikin has argued that such a
comput... | [
{
"created": "Tue, 11 Oct 2005 18:13:54 GMT",
"version": "v1"
}
] | 2010-04-28 | [
[
"Carlip",
"S.",
""
]
] | To determine whether the Shapiro time delay of light passing near a moving object depends on the ``speed of gravity'' or the ``speed of light,'' one must analyze observations in a bimetric framework in which these two speeds can be different. In a recent comment (gr-qc/0510048), Kopeikin has argued that such a computat... |
gr-qc/0103053 | Roberto A. Sussman | Diego Pavon and Roberto A. Sussman | Relaxation versus collision times in the cosmological radiative era | To appear in Classical and Quantum Gravity. Latex with revtex macros.
Includes six figures | Class.Quant.Grav.18:1625-1636,2001 | 10.1088/0264-9381/18/9/302 | null | gr-qc astro-ph cond-mat.stat-mech physics.plasm-ph | null | We consider the Lema\^{\i}tre-Tolman-Bondi metric with an inhomogeneous
viscous fluid source satisfying the equation of state of an interactive mixture
of radiation and matter. Assuming conditions prior to the decoupling era, we
apply Extended Irreversible Thermodynamcs (EIT) to this mixture. Using the full
transport... | [
{
"created": "Thu, 15 Mar 2001 08:45:50 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Pavon",
"Diego",
""
],
[
"Sussman",
"Roberto A.",
""
]
] | We consider the Lema\^{\i}tre-Tolman-Bondi metric with an inhomogeneous viscous fluid source satisfying the equation of state of an interactive mixture of radiation and matter. Assuming conditions prior to the decoupling era, we apply Extended Irreversible Thermodynamcs (EIT) to this mixture. Using the full transport e... |
1802.01537 | Hamish Forbes | Hamish Forbes | The Bach equations in Spin-Coefficient form | null | null | 10.1088/1361-6382/aac1eb | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Conformal gravity theories are defined by field equations that determine only
the conformal structure of the spacetime manifold. The Bach equations represent
an early example of such a theory, we present them here in component form in
terms of spin- and boost-weighted spin-coefficients using the compacted
spin-coeffi... | [
{
"created": "Mon, 5 Feb 2018 18:05:02 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Feb 2018 14:08:33 GMT",
"version": "v2"
},
{
"created": "Wed, 7 Feb 2018 18:35:20 GMT",
"version": "v3"
},
{
"created": "Wed, 2 May 2018 15:02:40 GMT",
"version": "v4"
}
] | 2018-05-03 | [
[
"Forbes",
"Hamish",
""
]
] | Conformal gravity theories are defined by field equations that determine only the conformal structure of the spacetime manifold. The Bach equations represent an early example of such a theory, we present them here in component form in terms of spin- and boost-weighted spin-coefficients using the compacted spin-coeffici... |
1111.0457 | Gary Gibbons | G. W. Gibbons | The emergent nature of time and the complex numbers in quantum cosmology | Extended version of a lecture , with additional introductory material
and many references, given at the conference Origins of Time's Arrow held at
the World Trade Centre, October 15-16, 2007 to appear in Fundamental Theories
of Physics, {\bf 164} The Arrows of Time: A debate in Cosmology eds
L.Mersini-Houghton ... | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nature of time in quantum mechanics is closely related to the use of a
complex, rather than say real, Hilbert space. This becomes particularly clear
when considering quantum field theory in time dependent backgrounds, such as in
cosmology, when the notion of positive frequency ceases to be well defined. In
spacet... | [
{
"created": "Wed, 2 Nov 2011 10:50:28 GMT",
"version": "v1"
}
] | 2011-11-03 | [
[
"Gibbons",
"G. W.",
""
]
] | The nature of time in quantum mechanics is closely related to the use of a complex, rather than say real, Hilbert space. This becomes particularly clear when considering quantum field theory in time dependent backgrounds, such as in cosmology, when the notion of positive frequency ceases to be well defined. In spacetim... |
2312.15767 | Emmanuil Saridakis | Spyros Basilakos, Andreas Lymperis, Maria Petronikolou, Emmanuel N.
Saridakis | Barrow holographic dark energy with varying exponent | 19 pages, 4 figures | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct Barrow holographic dark energy with varying exponent. Such an
energy-scale-dependent behavior is typical in quantum field theory and quantum
gravity under renormalization group considerations, however in the present
scenario it has an additional justification, since in realistic cases one
expects that Ba... | [
{
"created": "Mon, 25 Dec 2023 16:31:46 GMT",
"version": "v1"
}
] | 2023-12-27 | [
[
"Basilakos",
"Spyros",
""
],
[
"Lymperis",
"Andreas",
""
],
[
"Petronikolou",
"Maria",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We construct Barrow holographic dark energy with varying exponent. Such an energy-scale-dependent behavior is typical in quantum field theory and quantum gravity under renormalization group considerations, however in the present scenario it has an additional justification, since in realistic cases one expects that Barr... |
2201.10532 | Jorge Gigante Valcarcel | Sebastian Bahamonde, Jorge Gigante Valcarcel, Laur J\"arv | Pleba\'nski-Demia\'nski solutions with dynamical torsion and
nonmetricity fields | 18 pages, minor changes, references added. It matches the version
published in JCAP | JCAP04(2022)011 | 10.1088/1475-7516/2022/04/011 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct Pleba\'nski-Demia\'nski stationary and axisymmetric solutions
with two expanding and double principal null directions in the framework of
Metric-Affine gauge theory of gravity. Starting from the new improved form of
the metric with vanishing cosmological constant recently achieved by Podolsk\'y
and Vr\'a... | [
{
"created": "Tue, 25 Jan 2022 18:42:01 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Apr 2022 18:57:31 GMT",
"version": "v2"
}
] | 2022-04-13 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Valcarcel",
"Jorge Gigante",
""
],
[
"Järv",
"Laur",
""
]
] | We construct Pleba\'nski-Demia\'nski stationary and axisymmetric solutions with two expanding and double principal null directions in the framework of Metric-Affine gauge theory of gravity. Starting from the new improved form of the metric with vanishing cosmological constant recently achieved by Podolsk\'y and Vr\'atn... |
0711.2330 | Hiromi Saida | Hiromi Saida | Black Hole Evaporation and Generalized 2nd Law with Nonequilibrium
Thermodynamics | Typo is corrected. 10 pages, 2 figures. Based on proceedings and
talks given at: APCTP Jeju Meeting on Gravitation and Cosmology (Jeju, Korea,
2007), Dynamics and Thermodynamics of Black Holes and Naked Singularities II,
(Politecnico di Milano, Italy, 2007) and 16th General Relativity and
Gravitation (Niigata, ... | null | null | null | gr-qc | null | In general, when a black hole evaporates, there arises a net energy flow from
black hole into its outside environment due to Hawking radiation and energy
accretion onto black hole. The existence of energy flow means that the
thermodynamic state of the whole system, which consists of a black hole and its
environment, ... | [
{
"created": "Thu, 15 Nov 2007 02:25:37 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Nov 2007 03:39:06 GMT",
"version": "v2"
}
] | 2007-11-16 | [
[
"Saida",
"Hiromi",
""
]
] | In general, when a black hole evaporates, there arises a net energy flow from black hole into its outside environment due to Hawking radiation and energy accretion onto black hole. The existence of energy flow means that the thermodynamic state of the whole system, which consists of a black hole and its environment, is... |
gr-qc/9306016 | Claus Kiefer | C. Kiefer | Topology, Decoherence, and Semiclassical Gravity | 18 pages, ZU-TH 3/93, to appear in Phys. Rev. D | Phys.Rev.D47:5414-5421,1993 | 10.1103/PhysRevD.47.5414 | null | gr-qc | null | We address the issue of recovering the time-dependent Schr\"{o}dinger
equation from quantum gravity in a natural way. To reach this aim it is
necessary to understand the nonoccurrence of certain superpositions in quantum
gravity.
We explore various possible explanations and their relation. These are the
delocalisat... | [
{
"created": "Fri, 11 Jun 1993 09:08:18 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Kiefer",
"C.",
""
]
] | We address the issue of recovering the time-dependent Schr\"{o}dinger equation from quantum gravity in a natural way. To reach this aim it is necessary to understand the nonoccurrence of certain superpositions in quantum gravity. We explore various possible explanations and their relation. These are the delocalisation ... |
1301.2627 | Michele Vallisneri | Michele Vallisneri and Nicolas Yunes | Stealth Bias in Gravitational-Wave Parameter Estimation | 9 pages, 1 figure | null | 10.1103/PhysRevD.87.102002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspiraling binaries of compact objects are primary targets for current and
future gravitational-wave observatories. Waveforms computed in General
Relativity are used to search for these sources, and will probably be used to
extract source parameters from detected signals. However, if a different theory
of gravity ha... | [
{
"created": "Fri, 11 Jan 2013 23:05:21 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Vallisneri",
"Michele",
""
],
[
"Yunes",
"Nicolas",
""
]
] | Inspiraling binaries of compact objects are primary targets for current and future gravitational-wave observatories. Waveforms computed in General Relativity are used to search for these sources, and will probably be used to extract source parameters from detected signals. However, if a different theory of gravity happ... |
2305.17676 | Wenbin Lin | Jie Li, Bo Yang, Wenbin Lin | Massive white dwarfs in Rastall-Rainbow gravity | 13 pages,5 figures | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We investigate the hydrostatic equilibrium of white dwarfs within the
framework of Rastall-Rainbow gravity, aiming to explore the effects of this
modified gravitational theory on their properties. By employing the
Chandrasekhar equation of state in conjunction with the modified
Tolman-Oppenheimer-Volkoff equation, we... | [
{
"created": "Sun, 28 May 2023 09:51:39 GMT",
"version": "v1"
}
] | 2023-05-30 | [
[
"Li",
"Jie",
""
],
[
"Yang",
"Bo",
""
],
[
"Lin",
"Wenbin",
""
]
] | We investigate the hydrostatic equilibrium of white dwarfs within the framework of Rastall-Rainbow gravity, aiming to explore the effects of this modified gravitational theory on their properties. By employing the Chandrasekhar equation of state in conjunction with the modified Tolman-Oppenheimer-Volkoff equation, we d... |
1709.03748 | Andronikos Paliathanasis | G. Papagiannopoulos, S. Basilakos, A. Paliathanasis, S. Savvidou and
P.C. Stavrinos | Finsler-Randers Cosmology: dynamical analysis and growth of matter
perturbations | 16 pages, no figures, to be published in Classical and Quantum
Gravity | null | 10.1088/1361-6382/aa8be1 | null | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study for the first time the dynamical properties and the growth index of
linear matter perturbations of the Finsler-Randers (FR) cosmological model, for
which we consider that the cosmic fluid contains matter, radiation and a scalar
field. Initially, for various FR scenarios we implement a critical point
analysis... | [
{
"created": "Tue, 12 Sep 2017 09:10:48 GMT",
"version": "v1"
}
] | 2017-11-22 | [
[
"Papagiannopoulos",
"G.",
""
],
[
"Basilakos",
"S.",
""
],
[
"Paliathanasis",
"A.",
""
],
[
"Savvidou",
"S.",
""
],
[
"Stavrinos",
"P. C.",
""
]
] | We study for the first time the dynamical properties and the growth index of linear matter perturbations of the Finsler-Randers (FR) cosmological model, for which we consider that the cosmic fluid contains matter, radiation and a scalar field. Initially, for various FR scenarios we implement a critical point analysis a... |
gr-qc/9310026 | Gerard 't Hooft | G. 't Hooft | Dimensional Reduction in Quantum Gravity | 13 pages. TEX. 2 figures in postscript. Figures are now made visible
if pdf file is downloaded | null | null | THU-93/26 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The requirement that physical phenomena associated with gravitational
collapse should be duly reconciled with the postulates of quantum mechanics
implies that at a Planckian scale our world is not 3+1 dimensional. Rather, the
observable degrees of freedom can best be described as if they were Boolean
variables define... | [
{
"created": "Tue, 19 Oct 1993 14:17:10 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Mar 2009 21:49:19 GMT",
"version": "v2"
}
] | 2009-03-21 | [
[
"Hooft",
"G. 't",
""
]
] | The requirement that physical phenomena associated with gravitational collapse should be duly reconciled with the postulates of quantum mechanics implies that at a Planckian scale our world is not 3+1 dimensional. Rather, the observable degrees of freedom can best be described as if they were Boolean variables defined ... |
2007.07480 | Umananda Dev Goswami | Nashiba Parbin and Umananda Dev Goswami | Scalarons mimicking Dark Matter in the Hu-Sawicki model of f(R) gravity | 14 pages, 7 figures | Modern Physics Letters A 36, 2150265 (2021) | 10.1142/S0217732321502655 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we conduct a study on the scalar field obtained from
$\mathit{f(R)}$ gravity via Weyl transformation of the spacetime metric
$g_{\mu\nu}$ from the Jordan frame to the Einstein frame. The scalar field is
obtained as a result of the modification in the geometrical part of Einstein's
field equation of Gen... | [
{
"created": "Wed, 15 Jul 2020 04:58:15 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Dec 2021 08:22:44 GMT",
"version": "v2"
}
] | 2021-12-28 | [
[
"Parbin",
"Nashiba",
""
],
[
"Goswami",
"Umananda Dev",
""
]
] | In this paper, we conduct a study on the scalar field obtained from $\mathit{f(R)}$ gravity via Weyl transformation of the spacetime metric $g_{\mu\nu}$ from the Jordan frame to the Einstein frame. The scalar field is obtained as a result of the modification in the geometrical part of Einstein's field equation of Gener... |
gr-qc/0702017 | Michael Martin Nieto | Michael Martin Nieto | The Quest to Understand the Pioneer Anomaly | 12 pages, 7 figures | Europhysics News 37/6 (2006) 30-35 | null | LA-UR-06-6181 | gr-qc | null | The Pioneer 10/11 missions, launched in 1972 and 1973, and their navigation
are reviewed. Beginning in about 1980 an unmodeled force of ~ 8 x 10^{-8}
cm/s^2 appeared in the tracking data, it later being verified. The cause
remains unknown, although radiant heat remains a likely origin. A set of
efforts to find the so... | [
{
"created": "Fri, 2 Feb 2007 23:05:42 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Nieto",
"Michael Martin",
""
]
] | The Pioneer 10/11 missions, launched in 1972 and 1973, and their navigation are reviewed. Beginning in about 1980 an unmodeled force of ~ 8 x 10^{-8} cm/s^2 appeared in the tracking data, it later being verified. The cause remains unknown, although radiant heat remains a likely origin. A set of efforts to find the solu... |
0911.3487 | Hamid Reza Sepangi | A. Borzou, H. R. Sepangi, R. Yousefi and A. H. Ziaie | On the origins of galactic magnetic fields | 7 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a five dimensional unified theory of gravity and electromagnetism
which leads to modified Maxwell equations, suggesting a new origin for galactic
magnetic fields. It is shown that a region with nonzero scalar curvature would
amplify the magnetic fields under certain conditions.
| [
{
"created": "Wed, 18 Nov 2009 09:35:38 GMT",
"version": "v1"
}
] | 2009-11-19 | [
[
"Borzou",
"A.",
""
],
[
"Sepangi",
"H. R.",
""
],
[
"Yousefi",
"R.",
""
],
[
"Ziaie",
"A. H.",
""
]
] | We present a five dimensional unified theory of gravity and electromagnetism which leads to modified Maxwell equations, suggesting a new origin for galactic magnetic fields. It is shown that a region with nonzero scalar curvature would amplify the magnetic fields under certain conditions. |
1101.5536 | Leonid V. Verozub | Leonid V. Verozub | What is the meaning of non-uniqueness of FRW and Schwarzschild metrics? | 7 pages, An error fixed in Section 3 | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that any theory of gravitation, based on the hypothesis of the
geodesic motion of test particles must be invariant under geodesic (projecive)
mappings of the used space-time. The reason is that due to invariance of the
equations of geodesic lines under a continuous group of transformations of the
coeffici... | [
{
"created": "Fri, 28 Jan 2011 14:18:18 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Mar 2011 09:15:48 GMT",
"version": "v2"
},
{
"created": "Fri, 22 Jul 2011 17:53:06 GMT",
"version": "v3"
}
] | 2011-07-25 | [
[
"Verozub",
"Leonid V.",
""
]
] | It is shown that any theory of gravitation, based on the hypothesis of the geodesic motion of test particles must be invariant under geodesic (projecive) mappings of the used space-time. The reason is that due to invariance of the equations of geodesic lines under a continuous group of transformations of the coefficien... |
1904.11978 | Yoogeun Song | Isao Okamoto and Yoogeun Song | Energy self-extraction of a Kerr black hole through its frame-dragged
force-free magnetosphere | 23 pages, 4 figures | null | null | null | gr-qc astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that when only the condition} $0<\Omega_{\rm F}<\Omega_{\rm H}$
is satisfied, the Kerr black hole frame-drags its surrounding force-free
magnetosphere with the field-line-angular-velocity (FLAV) $\Omega_{\rm F}$,
where $\Omega_{\rm H}$ is the horizon angular-velocity. Then, the
zero-angular-momentum-obser... | [
{
"created": "Sun, 28 Apr 2019 05:58:34 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Oct 2020 06:23:38 GMT",
"version": "v2"
},
{
"created": "Mon, 16 Aug 2021 14:01:57 GMT",
"version": "v3"
},
{
"created": "Fri, 20 Aug 2021 04:34:34 GMT",
"version": "v4"
},
{
"c... | 2023-04-17 | [
[
"Okamoto",
"Isao",
""
],
[
"Song",
"Yoogeun",
""
]
] | It is shown that when only the condition} $0<\Omega_{\rm F}<\Omega_{\rm H}$ is satisfied, the Kerr black hole frame-drags its surrounding force-free magnetosphere with the field-line-angular-velocity (FLAV) $\Omega_{\rm F}$, where $\Omega_{\rm H}$ is the horizon angular-velocity. Then, the zero-angular-momentum-observe... |
0911.2738 | Anand S. Sengupta | Anand S. Sengupta (for the LIGO Scientific Collaboration and the Virgo
collaboration) | LIGO-Virgo searches for gravitational waves from coalescing binaries: a
status update | 5 pages, 1 figure; Proceedings of the 8th E. Amaldi Conference on
Gravitational Waves (Amaldi8), New York, 2009; to be published in J. Phys.:
Conf. Series (JPCS) | J.Phys.Conf.Ser.228:012002,2010 | 10.1088/1742-6596/228/1/012002 | LIGO-P0900252 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Coalescing compact binaries of neutron stars and/or black holes are
considered as one of the most promising sources for Earth based gravitational
wave detectors. The LIGO-Virgo joint collaboration's Compact Binary Coalescence
(CBC) group is searching for gravitational waves emitted by these astrophysical
systems by m... | [
{
"created": "Sat, 14 Nov 2009 01:35:57 GMT",
"version": "v1"
}
] | 2019-08-13 | [
[
"Sengupta",
"Anand S.",
"",
"for the LIGO Scientific Collaboration and the Virgo\n collaboration"
]
] | Coalescing compact binaries of neutron stars and/or black holes are considered as one of the most promising sources for Earth based gravitational wave detectors. The LIGO-Virgo joint collaboration's Compact Binary Coalescence (CBC) group is searching for gravitational waves emitted by these astrophysical systems by mat... |
gr-qc/0301009 | M. B. Altaie | M. B. Altaie and M.R. Setare | Finite-temperature scalar fields and the cosmological constant in an
Einstein universe | 7 pages, 2 figures | Phys.Rev. D67 (2003) 044018 | 10.1103/PhysRevD.67.044018 | null | gr-qc | null | We study the back reaction effect of massless minimally coupled scalar field
at finite temperatures in the background of Einstein universe. Substituting for
the vacuum expectation value of the components of the energy-momentum tensor on
the RHS of the Einstein equation, we deduce a relationship between the radius
of ... | [
{
"created": "Sun, 5 Jan 2003 12:37:31 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Altaie",
"M. B.",
""
],
[
"Setare",
"M. R.",
""
]
] | We study the back reaction effect of massless minimally coupled scalar field at finite temperatures in the background of Einstein universe. Substituting for the vacuum expectation value of the components of the energy-momentum tensor on the RHS of the Einstein equation, we deduce a relationship between the radius of th... |
1212.1179 | John Steele | John D. Steele | Conformal vectors in general space-times | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In an earlier paper (Class. Quantum Grav. 19 (2002) p.259) the author wrote
the homothetic equations for vacuum solutions in a first order formalism
allowing for arbitrary alignment of the dyad. This paper generalises that
method to conformal vectors in non-vacuum spaces. The method is applied to
metrics admitting a ... | [
{
"created": "Wed, 5 Dec 2012 21:16:17 GMT",
"version": "v1"
}
] | 2012-12-07 | [
[
"Steele",
"John D.",
""
]
] | In an earlier paper (Class. Quantum Grav. 19 (2002) p.259) the author wrote the homothetic equations for vacuum solutions in a first order formalism allowing for arbitrary alignment of the dyad. This paper generalises that method to conformal vectors in non-vacuum spaces. The method is applied to metrics admitting a th... |
1504.02071 | Jolyon Bloomfield | Jolyon Bloomfield, Daniel Bulhosa, Stephen Face | Formalism for Primordial Black Hole Formation in Spherical Symmetry | 42 pages, 21 figures, supplemental animations available at
http://www.youtube.com/playlist?list=PLqRPTTDr7yKTD9HExr7Fgk_RVrg5RwTau | null | null | MIT-CTP-4662 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a comprehensive formalism for the description of primordial black
hole formation in spherical symmetry based on the formalisms of Misner, Sharp,
and Hernandez, which can be used to predict whether or not a black hole will
form, and extract the resulting black hole mass when formation does occur.
Rigorous d... | [
{
"created": "Wed, 8 Apr 2015 18:33:03 GMT",
"version": "v1"
}
] | 2015-04-09 | [
[
"Bloomfield",
"Jolyon",
""
],
[
"Bulhosa",
"Daniel",
""
],
[
"Face",
"Stephen",
""
]
] | We present a comprehensive formalism for the description of primordial black hole formation in spherical symmetry based on the formalisms of Misner, Sharp, and Hernandez, which can be used to predict whether or not a black hole will form, and extract the resulting black hole mass when formation does occur. Rigorous der... |
1209.6356 | Marco Spaans | Marco Spaans (University of Groningen) | A topological extension of GR: Black holes induce dark energy | Accepted to the proceedings of IC-MSQUARE 2012 (Budapest); 4 pages,
comment on primordial black hole evaporation added | null | 10.1088/1742-6596/410/1/012149 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A topological extension of general relativity is presented. The superposition
principle of quantum mechanics, as formulated by the Feynman path integral, is
taken as a starting point. It is argued that the trajectories that enter this
path integral are distinct, despite any quantum uncertainty in geometry, and
thus t... | [
{
"created": "Thu, 27 Sep 2012 06:17:22 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Oct 2012 16:00:34 GMT",
"version": "v2"
},
{
"created": "Fri, 7 Dec 2012 09:52:58 GMT",
"version": "v3"
}
] | 2015-06-11 | [
[
"Spaans",
"Marco",
"",
"University of Groningen"
]
] | A topological extension of general relativity is presented. The superposition principle of quantum mechanics, as formulated by the Feynman path integral, is taken as a starting point. It is argued that the trajectories that enter this path integral are distinct, despite any quantum uncertainty in geometry, and thus tha... |
0912.1026 | J. Ponce de Leon | J. Ponce de Leon | Late time cosmic acceleration from vacuum Brans-Dicke theory in 5D | In V2 the summary section is expanded. To be published in Classical
and Quantum Gravity. | Class.Quant.Grav.27:095002,2010 | 10.1088/0264-9381/27/9/095002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the scalar-vacuum Brans-Dicke equations in 5D are equivalent to
Brans-Dicke theory in 4D with a self interacting potential and an effective
matter field. The cosmological implication, in the context of FRW models, is
that the observed accelerated expansion of the universe comes naturally from
the conditi... | [
{
"created": "Mon, 7 Dec 2009 17:15:53 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Mar 2010 06:24:21 GMT",
"version": "v2"
}
] | 2010-04-30 | [
[
"de Leon",
"J. Ponce",
""
]
] | We show that the scalar-vacuum Brans-Dicke equations in 5D are equivalent to Brans-Dicke theory in 4D with a self interacting potential and an effective matter field. The cosmological implication, in the context of FRW models, is that the observed accelerated expansion of the universe comes naturally from the condition... |
2305.07518 | Tapobrata Sarkar | Kunal Pal, Kuntal Pal, Rajibul Shaikh, Tapobrata Sarkar | A rotating modified JNW spacetime as a Kerr black hole mimicker | 15 Pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Event Horizon Telescope has recently observed the images and shadows of
the compact objects M87$^*$ and Sgr A$^*$ at the centres of the galaxies
Messier 87 and Milky Way. This has opened up a new window in observational
astronomy to probe and test gravity and fundamental physics in the strong-field
regime. In thi... | [
{
"created": "Fri, 12 May 2023 14:34:37 GMT",
"version": "v1"
}
] | 2023-05-15 | [
[
"Pal",
"Kunal",
""
],
[
"Pal",
"Kuntal",
""
],
[
"Shaikh",
"Rajibul",
""
],
[
"Sarkar",
"Tapobrata",
""
]
] | The Event Horizon Telescope has recently observed the images and shadows of the compact objects M87$^*$ and Sgr A$^*$ at the centres of the galaxies Messier 87 and Milky Way. This has opened up a new window in observational astronomy to probe and test gravity and fundamental physics in the strong-field regime. In this ... |
gr-qc/0612041 | Wen Zhao | Wen Zhao | Improved calculation of relic gravitational waves | 17 pages, 3 figures, minor typos corrected | Chin.Phys.16:2894-2902,2007 | 10.1088/1009-1963/16/10/012 | Chinese Physics 16 (2007) 2894-2902 | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we improve the calculation of the relic gravitational waves
(RGW) in two aspects: First, we investigate the transfer function after
considering the redshift-suppression effect, the accelerating expansion effect,
the damping effect of free-streaming relativistic particles, and the damping
effect of cosm... | [
{
"created": "Thu, 7 Dec 2006 07:03:39 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Jan 2007 07:52:56 GMT",
"version": "v2"
},
{
"created": "Sat, 29 May 2010 17:13:44 GMT",
"version": "v3"
}
] | 2010-06-01 | [
[
"Zhao",
"Wen",
""
]
] | In this paper, we improve the calculation of the relic gravitational waves (RGW) in two aspects: First, we investigate the transfer function after considering the redshift-suppression effect, the accelerating expansion effect, the damping effect of free-streaming relativistic particles, and the damping effect of cosmic... |
1207.5156 | Aldo Riello | Marios Christodoulou, Miklos L{\aa}ngvik, Aldo Riello, Christian
R\"oken, Carlo Rovelli | Divergences and Orientation in Spinfoams | 10 pages, 5 figures | Class. Quantum Grav. 30 055009 2013 | 10.1088/0264-9381/30/5/055009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We suggest that large radiative corrections appearing in the spinfoam
framework might be tied to the implicit sum over orientations. Specifically, we
show that in a suitably simplified context the characteristic "spike"
divergence of the Ponzano-Regge model disappears when restricting the theory to
just one of the tw... | [
{
"created": "Sat, 21 Jul 2012 15:22:35 GMT",
"version": "v1"
}
] | 2013-02-07 | [
[
"Christodoulou",
"Marios",
""
],
[
"Långvik",
"Miklos",
""
],
[
"Riello",
"Aldo",
""
],
[
"Röken",
"Christian",
""
],
[
"Rovelli",
"Carlo",
""
]
] | We suggest that large radiative corrections appearing in the spinfoam framework might be tied to the implicit sum over orientations. Specifically, we show that in a suitably simplified context the characteristic "spike" divergence of the Ponzano-Regge model disappears when restricting the theory to just one of the two ... |
gr-qc/9806077 | S. Droz | Serge Droz | Gravitational waves from inspiraling compact binaries: Second
post-Newtonian waveforms as search templates II | 5 pages, 3 Figures, RevTeX | Phys. Rev. D 59, 064030 (1999) | 10.1103/PhysRevD.59.064030 | null | gr-qc | null | We present further evidence that the second post-Newtonian (pN) approximation
to the gravitational waves emitted by inspiraling compact binaries is
sufficient for the detection of these systems. This is established by comparing
the 2-pN wave forms to signals calculated from black hole perturbation theory.
Results are... | [
{
"created": "Fri, 19 Jun 1998 02:10:10 GMT",
"version": "v1"
}
] | 2016-08-25 | [
[
"Droz",
"Serge",
""
]
] | We present further evidence that the second post-Newtonian (pN) approximation to the gravitational waves emitted by inspiraling compact binaries is sufficient for the detection of these systems. This is established by comparing the 2-pN wave forms to signals calculated from black hole perturbation theory. Results are p... |
1907.09542 | Luca Buoninfante | Luca Buoninfante, Gaetano Lambiase, Antonio Stabile | Testing fundamental physics with photon frequency shift | 7 pages, 2 figures, 1 table. Version accepted for publication in EPJC
Letters | null | 10.1140/epjc/s10052-020-7712-5 | null | gr-qc astro-ph.EP astro-ph.SR hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a high precision satellite experiment to further test Einstein's
General Relativity and constrain extended theories of gravity. We consider the
frequency shift of a photon radially exchanged between two observers located on
Earth and on a satellite in circular orbit in the equatorial plane. In General
Rela... | [
{
"created": "Mon, 22 Jul 2019 19:31:24 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Feb 2020 01:27:11 GMT",
"version": "v2"
}
] | 2020-03-18 | [
[
"Buoninfante",
"Luca",
""
],
[
"Lambiase",
"Gaetano",
""
],
[
"Stabile",
"Antonio",
""
]
] | We propose a high precision satellite experiment to further test Einstein's General Relativity and constrain extended theories of gravity. We consider the frequency shift of a photon radially exchanged between two observers located on Earth and on a satellite in circular orbit in the equatorial plane. In General Relati... |
1805.01258 | Iver Brevik | I. Brevik, V. V. Obukhov, and A. V. Timoshkin | Inflation in Terms of a Viscous van der Waals Coupled Fluid | 7 pages, no figures. To appear in Int. J. Geom. Meth. Mod. Phys | International Journal of Geometric Methods in Modern Physics
15(2018) 1850150 | 10.1142/S0219887818501505 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose to describe the acceleration of the universe by introducing a
model of two coupled fluids. We focus on the accelerated expansion at the early
stages. The inflationary expansion is described in terms of a van der Waals
equation of state for the cosmic fluid, when account is taken of bulk
viscosity. We assum... | [
{
"created": "Thu, 3 May 2018 12:32:40 GMT",
"version": "v1"
}
] | 2018-05-28 | [
[
"Brevik",
"I.",
""
],
[
"Obukhov",
"V. V.",
""
],
[
"Timoshkin",
"A. V.",
""
]
] | We propose to describe the acceleration of the universe by introducing a model of two coupled fluids. We focus on the accelerated expansion at the early stages. The inflationary expansion is described in terms of a van der Waals equation of state for the cosmic fluid, when account is taken of bulk viscosity. We assume ... |
2208.04725 | Pravin Dahal | Pravin Kumar Dahal | Covariant formulation of spin optics for electromagnetic waves | 10 pages, 0 figures; Matches published version; Full text at
https://rdcu.be/c1nMe | Applied Physics B 129, 11 (2023) | 10.1007/s00340-022-07952-2 | null | gr-qc physics.optics | http://creativecommons.org/licenses/by/4.0/ | We develop geometric optics expansion up to the subleading order for
circularly polarized electromagnetic waves on curved spacetime. This subleading
order geometric optics expansion, in which the conventional eikonal function is
modified by inserting a carefully chosen helicity-dependent correction, is
called spin op... | [
{
"created": "Mon, 8 Aug 2022 06:41:08 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Dec 2022 04:25:03 GMT",
"version": "v2"
}
] | 2022-12-13 | [
[
"Dahal",
"Pravin Kumar",
""
]
] | We develop geometric optics expansion up to the subleading order for circularly polarized electromagnetic waves on curved spacetime. This subleading order geometric optics expansion, in which the conventional eikonal function is modified by inserting a carefully chosen helicity-dependent correction, is called spin opti... |
1208.0630 | Fan Zhang | Fan Zhang, Jeandrew Brink, B\'ela Szil\'agyi, Geoffrey Lovelace | A geometrically motivated coordinate system for exploring spacetime
dynamics in numerical-relativity simulations using a quasi-Kinnersley tetrad | 30 pages, 17 figures, 2 tables | Phys. Rev. D 86, 084020 (2012) | 10.1103/PhysRevD.86.084020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the suitability and properties of a quasi-Kinnersley tetrad
and a geometrically motivated coordinate system as tools for quantifying both
strong-field and wave-zone effects in numerical relativity (NR) simulations. We
fix the radial and latitudinal coordinate degrees of freedom of the metric,
using the... | [
{
"created": "Thu, 2 Aug 2012 23:28:18 GMT",
"version": "v1"
}
] | 2012-12-18 | [
[
"Zhang",
"Fan",
""
],
[
"Brink",
"Jeandrew",
""
],
[
"Szilágyi",
"Béla",
""
],
[
"Lovelace",
"Geoffrey",
""
]
] | We investigate the suitability and properties of a quasi-Kinnersley tetrad and a geometrically motivated coordinate system as tools for quantifying both strong-field and wave-zone effects in numerical relativity (NR) simulations. We fix the radial and latitudinal coordinate degrees of freedom of the metric, using the C... |
1303.7393 | Chris Van Den Broeck | Chris Van Den Broeck | Astrophysics, cosmology, and fundamental physics with compact binary
coalescence and the Einstein Telescope | 10 pages, 3 figures. Proceedings of the International Conference on
Gravitation and Cosmology, Goa, India, 2011 | null | 10.1088/1742-6596/484/1/012008 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The second-generation interferometric gravitational wave detectors currently
under construction are expected to make their first detections within this
decade. This will firmly establish gravitational wave physics as an empirical
science and will open up a new era in astrophysics, cosmology, and fundamental
physics. ... | [
{
"created": "Fri, 29 Mar 2013 13:30:32 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Broeck",
"Chris Van Den",
""
]
] | The second-generation interferometric gravitational wave detectors currently under construction are expected to make their first detections within this decade. This will firmly establish gravitational wave physics as an empirical science and will open up a new era in astrophysics, cosmology, and fundamental physics. Al... |
1106.3963 | Gil de Oliveira-Neto | G. Oliveira-Neto, G. A. Monerat, E. V. Corr\^ea Silva, C. Neves and L.
G. Ferreira | An Early Universe Model with Stiff Matter and a Cosmological Constant | 12 Pages, 4 Figures. Final version. Accepted for publication in the
Proceedings of the 8th Friedmann Seminar, Rio de Janeiro, 2011. We restricted
our attention to treat the case where the stiff matter has negative energy
eigenvalues, following the referee's suggestion | null | 10.1142/S2010194511001346 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work, we study the quantum cosmology description of a
Friedmann-Robertson-Walker model in the presence of a stiff matter perfect
fluid and a negative cosmological constant. We work in the Schutz's variational
formalism and the spatial sections have constant negative curvature. We
quantize the model and... | [
{
"created": "Mon, 20 Jun 2011 16:33:21 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Nov 2011 19:11:18 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Oliveira-Neto",
"G.",
""
],
[
"Monerat",
"G. A.",
""
],
[
"Silva",
"E. V. Corrêa",
""
],
[
"Neves",
"C.",
""
],
[
"Ferreira",
"L. G.",
""
]
] | In the present work, we study the quantum cosmology description of a Friedmann-Robertson-Walker model in the presence of a stiff matter perfect fluid and a negative cosmological constant. We work in the Schutz's variational formalism and the spatial sections have constant negative curvature. We quantize the model and o... |
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