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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1902.09853 | Joe Kennedy Msci | Joe Kennedy, Lucas Lombriser, Andy Taylor | Screening and degenerate kinetic self-acceleration from the nonlinear
freedom of reconstructed Horndeski theories | null | Phys. Rev. D 100, 044034 (2019) | 10.1103/PhysRevD.100.044034 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have previously presented a reconstruction of Horndeski scalar-tensor
theories from linear cosmological observables. It includes free nonlinear terms
which can be added onto the reconstructed covariant theory without affecting
the background and linear dynamics. After discussing the uniqueness of these
correction ... | [
{
"created": "Tue, 26 Feb 2019 10:44:36 GMT",
"version": "v1"
}
] | 2019-08-21 | [
[
"Kennedy",
"Joe",
""
],
[
"Lombriser",
"Lucas",
""
],
[
"Taylor",
"Andy",
""
]
] | We have previously presented a reconstruction of Horndeski scalar-tensor theories from linear cosmological observables. It includes free nonlinear terms which can be added onto the reconstructed covariant theory without affecting the background and linear dynamics. After discussing the uniqueness of these correction te... |
gr-qc/0507075 | Dilek Ciftci | M. Arik, D. Ciftci | Schwarzschild-De Sitter black holes in 4+1 dimensional bulk | 6 pages | Mod.Phys.Lett.A22:289-296,2007 | 10.1142/S0217732307021172 | null | gr-qc | null | We construct a static solution for 4+1 dimensional bulk such that the 3+1
dimensional world has a linear warp factor and describes the
Schwarzschild-dS_{4} black hole. For m=0 this four dimensional universe and
Friedmann Robertson Walker universe are related with an explicit coordinate
transformation. We emphasize th... | [
{
"created": "Mon, 18 Jul 2005 12:04:44 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Nov 2005 13:41:44 GMT",
"version": "v2"
},
{
"created": "Wed, 6 Dec 2006 12:14:10 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Arik",
"M.",
""
],
[
"Ciftci",
"D.",
""
]
] | We construct a static solution for 4+1 dimensional bulk such that the 3+1 dimensional world has a linear warp factor and describes the Schwarzschild-dS_{4} black hole. For m=0 this four dimensional universe and Friedmann Robertson Walker universe are related with an explicit coordinate transformation. We emphasize that... |
1402.2984 | Sung-Jin Oh | Jonathan Luk and Sung-Jin Oh | Quantitative decay rates for dispersive solutions to the Einstein-scalar
field system in spherical symmetry | 63 pages, 2 figures. v2: version accepted for publication | Anal. PDE 8 (2015) 1603-1674 | 10.2140/apde.2015.8.1603 | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the future causally geodesically complete solutions
of the spherically symmetric Einstein-scalar field system. Under the a priori
assumption that the scalar field $\phi$ scatters locally in the scale-invariant
bounded-variation (BV) norm, we prove that $\phi$ and its derivatives decay
polynomi... | [
{
"created": "Wed, 12 Feb 2014 21:04:31 GMT",
"version": "v1"
},
{
"created": "Tue, 13 May 2014 21:33:12 GMT",
"version": "v2"
},
{
"created": "Mon, 29 Jun 2015 22:57:16 GMT",
"version": "v3"
}
] | 2016-01-20 | [
[
"Luk",
"Jonathan",
""
],
[
"Oh",
"Sung-Jin",
""
]
] | In this paper, we study the future causally geodesically complete solutions of the spherically symmetric Einstein-scalar field system. Under the a priori assumption that the scalar field $\phi$ scatters locally in the scale-invariant bounded-variation (BV) norm, we prove that $\phi$ and its derivatives decay polynomial... |
gr-qc/0306106 | Emanuele Berti | Emanuele Berti, Kostas D. Kokkotas, Eleftherios Papantonopoulos | Stability of five-dimensional rotating black holes projected on the
brane | 8 pages, 2 figures. Updated to match the version published on PRD.
Corrected a small typo (which does not affect the results) in equation (6) of
the published paper | Phys.Rev.D68:064020,2003 | 10.1103/PhysRevD.68.064020 | null | gr-qc astro-ph hep-th | null | We study the stability of five-dimensional Myers-Perry black holes with a
single angular momentum under linear perturbations, and we compute the
quasinormal modes (QNM's) of the black hole metric projected on the brane,
using Leaver's continued fraction method. In our numerical search we do not
find unstable modes. T... | [
{
"created": "Mon, 23 Jun 2003 14:11:27 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Oct 2003 16:03:53 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"Berti",
"Emanuele",
""
],
[
"Kokkotas",
"Kostas D.",
""
],
[
"Papantonopoulos",
"Eleftherios",
""
]
] | We study the stability of five-dimensional Myers-Perry black holes with a single angular momentum under linear perturbations, and we compute the quasinormal modes (QNM's) of the black hole metric projected on the brane, using Leaver's continued fraction method. In our numerical search we do not find unstable modes. The... |
gr-qc/9701039 | Scott A. Hughes | Eanna E. Flanagan and Scott A. Hughes | Measuring gravitational waves from binary black hole coalescences: I.
Signal to noise for inspiral, merger, and ringdown | 40 pages, Revtex, psfig.tex, seven figures, submitted to Phys Rev D | Phys.Rev.D57:4535-4565,1998 | 10.1103/PhysRevD.57.4535 | null | gr-qc astro-ph | null | We estimate the expected signal-to-noise ratios (SNRs) from the three phases
(inspiral,merger,ringdown) of coalescing binary black holes (BBHs) for initial
and advanced ground-based interferometers (LIGO/VIRGO) and for space-based
interferometers (LISA). LIGO/VIRGO can do moderate SNR (a few tens), moderate
accuracy ... | [
{
"created": "Thu, 16 Jan 1997 23:31:49 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Nov 1997 21:32:25 GMT",
"version": "v2"
}
] | 2009-12-30 | [
[
"Flanagan",
"Eanna E.",
""
],
[
"Hughes",
"Scott A.",
""
]
] | We estimate the expected signal-to-noise ratios (SNRs) from the three phases (inspiral,merger,ringdown) of coalescing binary black holes (BBHs) for initial and advanced ground-based interferometers (LIGO/VIRGO) and for space-based interferometers (LISA). LIGO/VIRGO can do moderate SNR (a few tens), moderate accuracy st... |
1912.06206 | Cesar Alonso Valenzuela Toledo | Juan P. Beltr\'an Almeida, Josu\'e Motoa-Manzano and C\'esar A.
Valenzuela-Toledo | de Sitter symmetries and inflationary scalar-vector models | 11 pages, paper published in 2016 as preliminary work to
arXiv:1706.05099 and arXiv:1905.00900. Possible overlap with these papers | Universitas Scientiarum 21(3), 219-243 (2016) | 10.11144/Javeriana.SC21-3.dssa | PI/UAN-2019-665FT | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the correspondence between a field theory in de
Sitter space in $D$-dimensions and a dual conformal field theory in a euclidean
space in $(D-1)$-dimensions. In particular, we investigate the form in which
this correspondence is established for a system of interacting scalar and a
vector fields... | [
{
"created": "Thu, 12 Dec 2019 20:52:06 GMT",
"version": "v1"
}
] | 2019-12-16 | [
[
"Almeida",
"Juan P. Beltrán",
""
],
[
"Motoa-Manzano",
"Josué",
""
],
[
"Valenzuela-Toledo",
"César A.",
""
]
] | In this paper, we study the correspondence between a field theory in de Sitter space in $D$-dimensions and a dual conformal field theory in a euclidean space in $(D-1)$-dimensions. In particular, we investigate the form in which this correspondence is established for a system of interacting scalar and a vector fields p... |
1906.03041 | J. Lorca Espiro | M. Le Delliou and J. Lorca Espiro | Is the Cosmological Constant of Topological Origin? | 6pp | null | 10.1016/j.dark.2020.100569 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The observed value of the cosmological constant poses large theoretical
problems. We find that topology of the Universe provides a natural source for
it. Restricting dynamically an Einstein-Cartan gravity to General Relativity in
our observed Universe allows topological invariants to induce an effective
cosmological ... | [
{
"created": "Fri, 7 Jun 2019 12:14:18 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Jun 2020 19:42:07 GMT",
"version": "v2"
}
] | 2020-06-16 | [
[
"Delliou",
"M. Le",
""
],
[
"Espiro",
"J. Lorca",
""
]
] | The observed value of the cosmological constant poses large theoretical problems. We find that topology of the Universe provides a natural source for it. Restricting dynamically an Einstein-Cartan gravity to General Relativity in our observed Universe allows topological invariants to induce an effective cosmological co... |
2309.06571 | S Habib Mazharimousavi | S. Habib Mazharimousavi | Nonspherically-symmetric black hole in Einstein-massless scalar theory | The first version, 6 pages, one figure, has been submitted to EPJC | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a two-parameter static, nonspherically-symmetric black hole
solution in the Einstein theory of gravity coupled with a massless scalar
field. The scalar field depends only on the polar coordinate $\theta$ in the
spherical coordinates representation. The scalar invariant of the spacetime,
namely, the Krets... | [
{
"created": "Fri, 8 Sep 2023 18:26:16 GMT",
"version": "v1"
}
] | 2023-09-14 | [
[
"Mazharimousavi",
"S. Habib",
""
]
] | We introduce a two-parameter static, nonspherically-symmetric black hole solution in the Einstein theory of gravity coupled with a massless scalar field. The scalar field depends only on the polar coordinate $\theta$ in the spherical coordinates representation. The scalar invariant of the spacetime, namely, the Kretsch... |
2303.00249 | Alexander Kaganovich B. | Alexander Kaganovich | Possible relationship between initial conditions for inflation and past
geodesic incompleteness of the inflationary spacetime | the paper was an accidental replacement of arXiv:2209.00378 | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | According to the Borde-Guth-Vilenkin (BGV) theorem an expanding region of
spacetime cannot be extended to the past beyond some boundary $\mathcal{B}$.
Therefore, the inflationary universe must have had some kind of beginning.
However, the BGW theorem says nothing about the boundary conditions on
$\mathcal{B}$, or eve... | [
{
"created": "Wed, 1 Mar 2023 06:14:07 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Apr 2023 12:35:27 GMT",
"version": "v2"
}
] | 2023-04-13 | [
[
"Kaganovich",
"Alexander",
""
]
] | According to the Borde-Guth-Vilenkin (BGV) theorem an expanding region of spacetime cannot be extended to the past beyond some boundary $\mathcal{B}$. Therefore, the inflationary universe must have had some kind of beginning. However, the BGW theorem says nothing about the boundary conditions on $\mathcal{B}$, or even ... |
1806.03835 | Vasiliy P. Neznamov | V.P.Neznamov, V.E.Shemarulin | Analysis of half-spin particle motion in Kerr-Newman field by means of
effective potentials in second-order equations | 19 pages | Grav. Cosmol. 24, 129-138 (2018) | 10.1134/S0202289318020111 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The self-conjugate Dirac Hamiltonian is obtained in the Kerr-Newman field. A
transition is implemented to a Schr\"odinger-type relativistic equation. For
the case where the angular and radial variables are not separated, the method
of obtaining effective potentials is generalized. Effective potentials have
isolated s... | [
{
"created": "Mon, 11 Jun 2018 07:03:37 GMT",
"version": "v1"
}
] | 2018-06-12 | [
[
"Neznamov",
"V. P.",
""
],
[
"Shemarulin",
"V. E.",
""
]
] | The self-conjugate Dirac Hamiltonian is obtained in the Kerr-Newman field. A transition is implemented to a Schr\"odinger-type relativistic equation. For the case where the angular and radial variables are not separated, the method of obtaining effective potentials is generalized. Effective potentials have isolated sin... |
1712.07151 | Gabriel Menezes | G. Menezes | Entanglement dynamics in a Kerr spacetime | Accepted for publication in Physical Review D | Phys. Rev. D 97, 085021 (2018) | 10.1103/PhysRevD.97.085021 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the entanglement dynamics between two-level atoms in a rotating
black hole background. In our model the two-atom system is envisaged as an open
system coupled with a massless scalar field prepared in one of the physical
vacuum states of interest. We employ the quantum master equation in the
Born-Markov ap... | [
{
"created": "Tue, 19 Dec 2017 19:08:10 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Apr 2018 02:46:36 GMT",
"version": "v2"
}
] | 2018-05-09 | [
[
"Menezes",
"G.",
""
]
] | We consider the entanglement dynamics between two-level atoms in a rotating black hole background. In our model the two-atom system is envisaged as an open system coupled with a massless scalar field prepared in one of the physical vacuum states of interest. We employ the quantum master equation in the Born-Markov appr... |
1409.0418 | Jiri Kovar | Ji\v{r}\'i Kov\'a\v{r}, Petr Slan\'y, Claudio Cremaschini, Zden\v{e}k
Stuchl\'ik, Vladim\'ir Karas and Audrey Trova | Electrically charged matter in rigid rotation around magnetized black
hole | 14 pages, 5 figures | Physical Review D 90, 044029 (2014) | 10.1103/PhysRevD.90.044029 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study charged-fluid toroidal structures surrounding a non-rotating charged
black hole immersed in a large-scale, asymptotically uniform magnetic field. In
continuation of our former study on electrically charged matter in
approximation of zero conductivity, we demonstrate existence of orbiting
structures in perman... | [
{
"created": "Mon, 1 Sep 2014 13:33:09 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Kovář",
"Jiří",
""
],
[
"Slaný",
"Petr",
""
],
[
"Cremaschini",
"Claudio",
""
],
[
"Stuchlík",
"Zdeněk",
""
],
[
"Karas",
"Vladimír",
""
],
[
"Trova",
"Audrey",
""
]
] | We study charged-fluid toroidal structures surrounding a non-rotating charged black hole immersed in a large-scale, asymptotically uniform magnetic field. In continuation of our former study on electrically charged matter in approximation of zero conductivity, we demonstrate existence of orbiting structures in permanen... |
gr-qc/0406091 | Giancarlo Cella | G. Cella, V. Sannibale, R. DeSalvo, S M\'arka and A. Takamori | Monolithic Geometric Anti-Spring Blade | 26 pages, 9 figures; some typos corrected; improved figures | Nucl.Instrum.Meth. A540 (2005) 502-519 | 10.1016/j.nima.2004.10.042 | LIGO DCC number P040004-00-D | gr-qc | null | In this article we investigate the principle and properties of a vertical
passive seismic noise attenuator conceived for ground based gravitational wave
interferometers. This mechanical attenuator based on a particular geometry of
cantilever blades called monolithic geometric anti springs (MGAS) permits the
design of... | [
{
"created": "Tue, 22 Jun 2004 19:22:45 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Jun 2004 08:36:51 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Cella",
"G.",
""
],
[
"Sannibale",
"V.",
""
],
[
"DeSalvo",
"R.",
""
],
[
"Márka",
"S",
""
],
[
"Takamori",
"A.",
""
]
] | In this article we investigate the principle and properties of a vertical passive seismic noise attenuator conceived for ground based gravitational wave interferometers. This mechanical attenuator based on a particular geometry of cantilever blades called monolithic geometric anti springs (MGAS) permits the design of m... |
1003.2939 | David McKechan | D.J.A. McKechan, C. Robinson, B.S. Sathyaprakash | A tapering window for time-domain templates and simulated signals in the
detection of gravitational waves from coalescing compact binaries | null | Class.Quant.Grav.27:084020,2010 | 10.1088/0264-9381/27/8/084020 | LIGO-P0900118-v4 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspiral signals from binary black holes, in particular those with masses in
the range $10M_\odot \lsim M \lsim 1000 M_\odot,$ may last for only a few
cycles within a detector's most sensitive frequency band. The spectrum of a
square-windowed time-domain signal could contain unwanted power that can cause
problems in ... | [
{
"created": "Mon, 15 Mar 2010 15:11:19 GMT",
"version": "v1"
}
] | 2015-03-13 | [
[
"McKechan",
"D. J. A.",
""
],
[
"Robinson",
"C.",
""
],
[
"Sathyaprakash",
"B. S.",
""
]
] | Inspiral signals from binary black holes, in particular those with masses in the range $10M_\odot \lsim M \lsim 1000 M_\odot,$ may last for only a few cycles within a detector's most sensitive frequency band. The spectrum of a square-windowed time-domain signal could contain unwanted power that can cause problems in gr... |
2406.17501 | Sanjar Shaymatov | Ahmad Al-Badawi, Sanjar Shaymatov, Sohan Kumar Jha, Anisur Rahaman | GUP corrected black holes with cloud of string | 32 pages, 7 tables, 14 captioned figures. Accepted for publication in
Eur. Phys. J. C | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate shadows, deflection angle, quasinormal modes (QNMs), and
sparsity of Hawking radiation of the Schwarzschild string cloud black hole's
solution after applying quantum corrections required by the Generalised
Uncertainty Principle (GUP). First, we explore the shadow's behaviour in the
presence of a string... | [
{
"created": "Tue, 25 Jun 2024 12:40:44 GMT",
"version": "v1"
}
] | 2024-06-26 | [
[
"Al-Badawi",
"Ahmad",
""
],
[
"Shaymatov",
"Sanjar",
""
],
[
"Jha",
"Sohan Kumar",
""
],
[
"Rahaman",
"Anisur",
""
]
] | We investigate shadows, deflection angle, quasinormal modes (QNMs), and sparsity of Hawking radiation of the Schwarzschild string cloud black hole's solution after applying quantum corrections required by the Generalised Uncertainty Principle (GUP). First, we explore the shadow's behaviour in the presence of a string c... |
gr-qc/0006081 | Philippos Papadopoulos | Roberto Gomez, Philippos Papadopoulos and Jeffrey Winicour | Null cone evolution of axisymmetric vacuum spacetimes | 25 pages, 6 figures | J.Math.Phys. 35 (1994) 4184 | 10.1063/1.530848 | null | gr-qc | null | We present the details of an algorithm for the global evolution of
asymptotically flat, axisymmetric spacetimes, based upon a characteristic
initial value formulation using null cones as evolution hypersurfaces. We
identify a new static solution of the vacuum field equations which provides an
important test bed for c... | [
{
"created": "Thu, 22 Jun 2000 17:22:53 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Gomez",
"Roberto",
""
],
[
"Papadopoulos",
"Philippos",
""
],
[
"Winicour",
"Jeffrey",
""
]
] | We present the details of an algorithm for the global evolution of asymptotically flat, axisymmetric spacetimes, based upon a characteristic initial value formulation using null cones as evolution hypersurfaces. We identify a new static solution of the vacuum field equations which provides an important test bed for cha... |
1203.1819 | Ovidiu Cristinel Stoica | Ovidiu-Cristinel Stoica | Beyond the Friedmann-Lemaitre-Robertson-Walker Big Bang singularity | To appear in CTP, 8 pages, 1 figure | Commun. Theor. Phys. 58(4) (2012), 613-616 | 10.1088/0253-6102/58/4/28 | null | gr-qc astro-ph.CO math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein's equation, in its standard form, breaks down at the Big Bang
singularity. A new version, equivalent to Einstein's whenever the latter is
defined, but applicable in wider situations, is proposed. The new equation
remains smooth at the Big Bang singularity of the
Friedmann-Lemaitre-Robertson-Walker model. It ... | [
{
"created": "Thu, 8 Mar 2012 14:57:59 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Aug 2012 09:30:38 GMT",
"version": "v2"
}
] | 2014-05-13 | [
[
"Stoica",
"Ovidiu-Cristinel",
""
]
] | Einstein's equation, in its standard form, breaks down at the Big Bang singularity. A new version, equivalent to Einstein's whenever the latter is defined, but applicable in wider situations, is proposed. The new equation remains smooth at the Big Bang singularity of the Friedmann-Lemaitre-Robertson-Walker model. It is... |
gr-qc/0212041 | Antony Garrett | A. Garrett Lisi | Clifford Geometrodynamics | 4 pages, no figures. Corrected and included |e| suggested by a reader | null | null | null | gr-qc hep-th | null | Classical anti-commuting spinor fields and their dynamics are derived from
the geometry of the Clifford bundle over spacetime via the BRST formulation. In
conjunction with Kaluza-Klein theory, this results in a geometric description
of all the fields and dynamics of the standard model coupled to gravity and
provides ... | [
{
"created": "Mon, 9 Dec 2002 16:42:00 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Dec 2002 22:32:07 GMT",
"version": "v2"
},
{
"created": "Sat, 14 Dec 2002 19:23:03 GMT",
"version": "v3"
}
] | 2016-08-31 | [
[
"Lisi",
"A. Garrett",
""
]
] | Classical anti-commuting spinor fields and their dynamics are derived from the geometry of the Clifford bundle over spacetime via the BRST formulation. In conjunction with Kaluza-Klein theory, this results in a geometric description of all the fields and dynamics of the standard model coupled to gravity and provides th... |
1709.04516 | Sudan Hansraj | Sudan Hansraj and Nkululeko Qwabe | Inverse square law isothermal property in relativistic charged static
distributions | 22 pages 6 figures | Mod. Phys. Lett. A, Vol. 32, No. 37 (2017) 1750204 | 10.1142/S0217732317502042 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse the impact of the inverse square law fall-off of the energy
density in a charged isotropic spherically symmetric fluid. Initially we impose
a linear barotropic equation of state $p=\alpha \rho$ but this leads to an
intractable differential equation. Next we consider the neutral isothermal
metric of Saslaw,... | [
{
"created": "Wed, 13 Sep 2017 19:48:02 GMT",
"version": "v1"
}
] | 2017-11-22 | [
[
"Hansraj",
"Sudan",
""
],
[
"Qwabe",
"Nkululeko",
""
]
] | We analyse the impact of the inverse square law fall-off of the energy density in a charged isotropic spherically symmetric fluid. Initially we impose a linear barotropic equation of state $p=\alpha \rho$ but this leads to an intractable differential equation. Next we consider the neutral isothermal metric of Saslaw, M... |
gr-qc/0401039 | Ragab Gad | Ragab M. Gad | Energy Distribution of a G\"{o}del-Type Space-Time | LaTex, no figures | Astrophys.Space Sci.293:453-460,2004 | 10.1023/B:ASTR.0000044624.38810.da | null | gr-qc | null | We calculate the energy and momentum distributions associated with a
G\"{o}del-type space-time, using the well-known energy-momentum complexes of
Landau and Lifshitz and M{\o}ller. We show that the definitions of Landau and
Lifshitz and M{\o}ller do not furnish a consistent result.
| [
{
"created": "Sat, 10 Jan 2004 23:43:21 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Jan 2004 11:24:26 GMT",
"version": "v2"
}
] | 2011-07-19 | [
[
"Gad",
"Ragab M.",
""
]
] | We calculate the energy and momentum distributions associated with a G\"{o}del-type space-time, using the well-known energy-momentum complexes of Landau and Lifshitz and M{\o}ller. We show that the definitions of Landau and Lifshitz and M{\o}ller do not furnish a consistent result. |
2112.11332 | Riasat Ali | Riasat Ali, Muhammad Asgher | Tunneling Analysis Under the Influences of Einstein-Gauss-Bonnet Black
Holes Gravity Theory | 7 pages,3 figures, version accepted for publication in New Astronomy | null | 10.1016/j.newast.2021.101759 | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | We consider an equation of motion for Glashow-Weinberg-Salam model and apply
the semiclassical Hamilton-Jacobi process and WKB approximation in order to
compute the tunneling probability of W-bosons in the background of
electromagnetic field to analyze the quantum gravity effects of charged black
hole(BH) in Einstein... | [
{
"created": "Tue, 21 Dec 2021 16:22:01 GMT",
"version": "v1"
}
] | 2022-01-26 | [
[
"Ali",
"Riasat",
""
],
[
"Asgher",
"Muhammad",
""
]
] | We consider an equation of motion for Glashow-Weinberg-Salam model and apply the semiclassical Hamilton-Jacobi process and WKB approximation in order to compute the tunneling probability of W-bosons in the background of electromagnetic field to analyze the quantum gravity effects of charged black hole(BH) in Einstein-G... |
2102.02471 | Matt Visser | Thomas Berry (Victoria University of Wellington), Alex Simpson
(Victoria University of Wellington), and Matt Visser (Victoria University of
Wellington) | General class of "quantum deformed" regular black holes | 32 pages; 1 figure; 2 tables | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the "quantum deformed Schwarzschild spacetime" as originally
introduced by Kazakov and Solodukhin in 1993, and investigate the precise sense
in which it does and does not satisfy the desiderata for being a "regular black
hole". We shall carefully distinguish (i) regularity of the metric components,
(ii) re... | [
{
"created": "Thu, 4 Feb 2021 08:17:54 GMT",
"version": "v1"
}
] | 2021-02-05 | [
[
"Berry",
"Thomas",
"",
"Victoria University of Wellington"
],
[
"Simpson",
"Alex",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of\n Wellington"
]
] | We discuss the "quantum deformed Schwarzschild spacetime" as originally introduced by Kazakov and Solodukhin in 1993, and investigate the precise sense in which it does and does not satisfy the desiderata for being a "regular black hole". We shall carefully distinguish (i) regularity of the metric components, (ii) regu... |
1203.6576 | Laszlo Arpad Gergely | Zsolt Horv\'ath, L\'aszl\'o \'A. Gergely | Black hole tidal charge constrained by strong gravitational lensing | null | Astronomical Notes (Astronomische Nachrichten) 334, 1047-1050
(2013) | 10.1002/asna.201211992 | null | gr-qc astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spherically symmetric brane black holes have tidal charge, which modifies
both weak and strong lensing characteristics. Even if lensing measurements are
in agreement with a Schwarzschild lens, the margin of error of the detecting
instrument allows for a certain tidal charge. In this paper we derive the
respective con... | [
{
"created": "Thu, 29 Mar 2012 16:27:09 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Dec 2013 15:59:28 GMT",
"version": "v2"
}
] | 2013-12-17 | [
[
"Horváth",
"Zsolt",
""
],
[
"Gergely",
"László Á.",
""
]
] | Spherically symmetric brane black holes have tidal charge, which modifies both weak and strong lensing characteristics. Even if lensing measurements are in agreement with a Schwarzschild lens, the margin of error of the detecting instrument allows for a certain tidal charge. In this paper we derive the respective const... |
2401.06887 | Alice Boldrin | Alice Boldrin, Przemys{\l}aw Ma{\l}kiewicz, Patrick Peter | Time problem in primordial perturbations | Corrected typos | Phys.Rev.D 109 (2024) 10, 106005 | 10.1103/PhysRevD.109.106005 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study the non-unitary relation between quantum gravitational models
defined using different internal times. We show that despite the non-unitarity,
it is possible to provide a prescription for making unambiguous, though
restricted, physical predictions independent of specific clocks. To illustrate
this result, we ... | [
{
"created": "Fri, 12 Jan 2024 20:45:52 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Jan 2024 09:01:03 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Jan 2024 13:59:56 GMT",
"version": "v3"
},
{
"created": "Tue, 7 May 2024 08:42:14 GMT",
"version": "v4"
}
] | 2024-05-08 | [
[
"Boldrin",
"Alice",
""
],
[
"Małkiewicz",
"Przemysław",
""
],
[
"Peter",
"Patrick",
""
]
] | We study the non-unitary relation between quantum gravitational models defined using different internal times. We show that despite the non-unitarity, it is possible to provide a prescription for making unambiguous, though restricted, physical predictions independent of specific clocks. To illustrate this result, we em... |
2210.00959 | Ming Zhang | Ming Zhang, Jie Jiang | Internal structures and circular orbits for test particles | null | null | 10.1016/j.physletb.2022.137476 | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | We explore how the internal structure of a test particle affects its
equatorial stable circular orbits around the Kerr black hole with or without a
cosmological constant. To this end, we first explicitly write equations of
motion for a test particle in the pole-dipole-quadrupole approximation
specifying the quadrupol... | [
{
"created": "Mon, 3 Oct 2022 14:21:19 GMT",
"version": "v1"
}
] | 2022-10-19 | [
[
"Zhang",
"Ming",
""
],
[
"Jiang",
"Jie",
""
]
] | We explore how the internal structure of a test particle affects its equatorial stable circular orbits around the Kerr black hole with or without a cosmological constant. To this end, we first explicitly write equations of motion for a test particle in the pole-dipole-quadrupole approximation specifying the quadrupole ... |
2311.15695 | Lalit Pathak | Sachin R. Shukla, Lalit Pathak, Anand S. Sengupta | Pinpointing coalescing binary neutron star sources with the IGWN,
including LIGO-Aundha | 22 pages, 7 figures, Title change + Slight differences in the
abstract (in comparison to the PRD version) due to word limits | Phys. Rev. D 109, 044051 (2024), Vol. 109, Iss. 4 | 10.1103/PhysRevD.109.044051 | LIGO DCC number: LIGO-P2300401 | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | LIGO-Aundha (A1), the Indian gravitational wave detector, is expected to join
the IGWN and begin operations in the early 2030s. We study the impact of A1 on
the accuracy of determining the direction of incoming transient signals from
coalescing BNS sources with moderately high SNRs. It is conceivable that A1's
sensit... | [
{
"created": "Mon, 27 Nov 2023 10:32:06 GMT",
"version": "v1"
},
{
"created": "Sun, 14 Apr 2024 12:44:49 GMT",
"version": "v2"
},
{
"created": "Tue, 16 Apr 2024 13:27:58 GMT",
"version": "v3"
}
] | 2024-04-17 | [
[
"Shukla",
"Sachin R.",
""
],
[
"Pathak",
"Lalit",
""
],
[
"Sengupta",
"Anand S.",
""
]
] | LIGO-Aundha (A1), the Indian gravitational wave detector, is expected to join the IGWN and begin operations in the early 2030s. We study the impact of A1 on the accuracy of determining the direction of incoming transient signals from coalescing BNS sources with moderately high SNRs. It is conceivable that A1's sensitiv... |
1412.1471 | Mariafelicia De Laurentis Professor | Salvatore Capozziello, Mariafelicia De Laurentis, Ratbay Myrzakulov | Noether Symmetry Approach for teleparallel-curvature cosmology | 9 pages. arXiv admin note: text overlap with arXiv:1406.5652 | null | 10.1142/S0219887815500954 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider curvature-teleparallel $F(R,T)$ gravity, where the gravitational
Lagrangian density is given by an arbitrary function of the Ricci scalar $R$
and the torsion scalar $T$. Using the Noether Symmetry Approach, we show that
the functional form of the $F(R, T)$ function, can be determined by the
presence of sy... | [
{
"created": "Wed, 3 Dec 2014 20:44:28 GMT",
"version": "v1"
},
{
"created": "Mon, 4 May 2015 20:19:28 GMT",
"version": "v2"
}
] | 2015-10-21 | [
[
"Capozziello",
"Salvatore",
""
],
[
"De Laurentis",
"Mariafelicia",
""
],
[
"Myrzakulov",
"Ratbay",
""
]
] | We consider curvature-teleparallel $F(R,T)$ gravity, where the gravitational Lagrangian density is given by an arbitrary function of the Ricci scalar $R$ and the torsion scalar $T$. Using the Noether Symmetry Approach, we show that the functional form of the $F(R, T)$ function, can be determined by the presence of symm... |
gr-qc/0703029 | Keiju Murata | Keiju Murata, Jiro Soda, Sugumi Kanno | Fate of Kaluza-Klein Black Holes: Evaporation or Excision? | 6 pages, 4 figures | Phys.Rev.D75:104017,2007 | 10.1103/PhysRevD.75.104017 | null | gr-qc hep-th | null | We study evaporation process of black strings which are typical examples of
Kaluza-Klein black holes. Taking into account the backreaction of the Hawking
radiation, we deduce the evolution equation for the radion field. By solving
the evolution equation, we find that the shape of the internal space is necked
by the H... | [
{
"created": "Mon, 5 Mar 2007 18:50:27 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Jun 2007 08:16:11 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Murata",
"Keiju",
""
],
[
"Soda",
"Jiro",
""
],
[
"Kanno",
"Sugumi",
""
]
] | We study evaporation process of black strings which are typical examples of Kaluza-Klein black holes. Taking into account the backreaction of the Hawking radiation, we deduce the evolution equation for the radion field. By solving the evolution equation, we find that the shape of the internal space is necked by the Haw... |
0704.0431 | Burkhard Zink | Burkhard Zink, Nikolaos Stergioulas, Ian Hawke, Christian D. Ott, Erik
Schnetter, Ewald Mueller | Fragmentation of general relativistic quasi-toroidal polytropes | 2 pages, 1 figure. Submitted to the Proceedings of the 11th Marcel
Grossmann Meeting (MG11) in Berlin, Germany, July 23-29, 2006 | null | 10.1142/9789812834300_0199 | null | gr-qc astro-ph.HE | null | We investigate the role of rotational instabilities in the context of black
hole formation in relativistic stars. In addition to the standard scenario - an
axially symmetric dynamical instability forming a horizon at the star's center
- the recently found low-$T/|W|$ instabilities are shown to lead to
fragmentation a... | [
{
"created": "Tue, 3 Apr 2007 16:40:27 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Zink",
"Burkhard",
""
],
[
"Stergioulas",
"Nikolaos",
""
],
[
"Hawke",
"Ian",
""
],
[
"Ott",
"Christian D.",
""
],
[
"Schnetter",
"Erik",
""
],
[
"Mueller",
"Ewald",
""
]
] | We investigate the role of rotational instabilities in the context of black hole formation in relativistic stars. In addition to the standard scenario - an axially symmetric dynamical instability forming a horizon at the star's center - the recently found low-$T/|W|$ instabilities are shown to lead to fragmentation and... |
1808.05094 | Wu-Sheng Dai | Wen-Du Li, Yu-Zhu Chen, Wu-Sheng Dai | Scalar scattering in Schwarzschild spacetime: Integral equation method | null | Physics Letters B786 (2018) 300-304 | 10.1016/j.physletb.2018.10.010 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An integral equation method for scalar scattering in Schwarzschild spacetime
is constructed. The zeroth-order and first-order scattering phase shift is
obtained.
| [
{
"created": "Wed, 15 Aug 2018 14:22:54 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Oct 2018 15:04:00 GMT",
"version": "v2"
}
] | 2018-10-17 | [
[
"Li",
"Wen-Du",
""
],
[
"Chen",
"Yu-Zhu",
""
],
[
"Dai",
"Wu-Sheng",
""
]
] | An integral equation method for scalar scattering in Schwarzschild spacetime is constructed. The zeroth-order and first-order scattering phase shift is obtained. |
2004.07089 | Bobir Toshmatov | Daniele Malafarina, Bobir Toshmatov, Naresh Dadhich | Dust collapse in 4D Einstein-Gauss-Bonnet gravity | 5 pages, 3 figures | Physics of the Dark Universe 30 (2020) 100598 | 10.1016/j.dark.2020.100598 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider gravitational collapse in the recently proposed 4D limit of
Einstein-Gauss-Bonnet gravity. We show that for collapse of a sphere made of
homogeneous dust the process is qualitatively similar to the case of pure
Einstein's gravity. The singularity forms as the endstate of collapse and it is
trapped behind ... | [
{
"created": "Wed, 15 Apr 2020 13:53:01 GMT",
"version": "v1"
},
{
"created": "Sat, 30 May 2020 13:02:03 GMT",
"version": "v2"
}
] | 2020-06-04 | [
[
"Malafarina",
"Daniele",
""
],
[
"Toshmatov",
"Bobir",
""
],
[
"Dadhich",
"Naresh",
""
]
] | We consider gravitational collapse in the recently proposed 4D limit of Einstein-Gauss-Bonnet gravity. We show that for collapse of a sphere made of homogeneous dust the process is qualitatively similar to the case of pure Einstein's gravity. The singularity forms as the endstate of collapse and it is trapped behind th... |
2302.00223 | Genly Le\'on | Alfredo D. Millano (Catolica del Norte U.), Kimet Jusufi (State U.,
Tetova) and Genly Leon (Catolica del Norte U. and DUT, Durban) | Phase space analysis of the bouncing universe with stringy effects | 21 pages, 2 compound figures | null | 10.1016/j.physletb.2023.137916 | null | gr-qc hep-ph hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the recently modified Friedmann equations obtained from string
T-duality effects that encode the zero-point length (Phys. Lett. B 836 (2023),
137621) to study the phase space analyses of a bouncing early universe. An
important implication of such stringy effects is that they can alleviate the
initial singulari... | [
{
"created": "Wed, 1 Feb 2023 03:59:36 GMT",
"version": "v1"
}
] | 2023-05-03 | [
[
"Millano",
"Alfredo D.",
"",
"Catolica del Norte U."
],
[
"Jusufi",
"Kimet",
"",
"State U.,\n Tetova"
],
[
"Leon",
"Genly",
"",
"Catolica del Norte U. and DUT, Durban"
]
] | We use the recently modified Friedmann equations obtained from string T-duality effects that encode the zero-point length (Phys. Lett. B 836 (2023), 137621) to study the phase space analyses of a bouncing early universe. An important implication of such stringy effects is that they can alleviate the initial singularity... |
gr-qc/0605110 | Narayan Banerjee | Narayan Banerjee and Sudipta Das | A late time acceleration of the universe with two scalar fields : many
possibilities | 8 pages, no figures. Accepted for publication in Mod. Phys. Lett. A | Mod.Phys.Lett. A21 (2006) 2663-2670 | 10.1142/S0217732306020676 | null | gr-qc | null | In the present work, an attempt has been made to explain the recent cosmic
acceleration with two mutually interacting scalar fields, one being the
Brans-Dicke scalar field and the other a quintessence scalar field. Conditions
have been derived for which the quintessence scalar field has an early
oscillation and it gr... | [
{
"created": "Fri, 19 May 2006 14:11:24 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Banerjee",
"Narayan",
""
],
[
"Das",
"Sudipta",
""
]
] | In the present work, an attempt has been made to explain the recent cosmic acceleration with two mutually interacting scalar fields, one being the Brans-Dicke scalar field and the other a quintessence scalar field. Conditions have been derived for which the quintessence scalar field has an early oscillation and it grow... |
2402.04503 | Omar Valdivia O. Valdivia | L. Avil\'es, C. Corral, F. Izaurieta, O. Valdivia, C. Vera | Asymptotically AdS black hole with a conformally-coupled scalar field in
the first-order formalism of gravity | References added. Matches published version | null | 10.1103/PhysRevD.109.084039 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We present a novel asymptotically anti-de Sitter black hole solution with
conformally-coupled scalar fields in the first-order formalism of gravity in
four dimensions. To do so, we consider a one-parameter extension of conformal
transformations by exploiting the fact that the vielbein and spin connection
are regarded... | [
{
"created": "Wed, 7 Feb 2024 01:12:49 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Apr 2024 16:24:44 GMT",
"version": "v2"
}
] | 2024-04-19 | [
[
"Avilés",
"L.",
""
],
[
"Corral",
"C.",
""
],
[
"Izaurieta",
"F.",
""
],
[
"Valdivia",
"O.",
""
],
[
"Vera",
"C.",
""
]
] | We present a novel asymptotically anti-de Sitter black hole solution with conformally-coupled scalar fields in the first-order formalism of gravity in four dimensions. To do so, we consider a one-parameter extension of conformal transformations by exploiting the fact that the vielbein and spin connection are regarded a... |
2110.05974 | Abdulla Al Mamon | Abdulla Al Mamon, Andronikos Paliathanasis, Subhajit Saha | An extended analysis for a generalized Chaplygin gas model | v2: 20 pages, 4 figures, Accepted for publication in EPJC | null | 10.1140/epjc/s10052-022-10185-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we have extended the analysis on the generalized Chaplygin gas
(GCG) model as the unification of dark energy and dark matter. Specifically, we
have shown that the model of our consideration known as the new generalized
Chaplygin gas (NGCG) model, admits a scalar field description, which means that
there... | [
{
"created": "Tue, 12 Oct 2021 13:04:01 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Mar 2022 14:49:45 GMT",
"version": "v2"
}
] | 2022-04-13 | [
[
"Mamon",
"Abdulla Al",
""
],
[
"Paliathanasis",
"Andronikos",
""
],
[
"Saha",
"Subhajit",
""
]
] | In this work, we have extended the analysis on the generalized Chaplygin gas (GCG) model as the unification of dark energy and dark matter. Specifically, we have shown that the model of our consideration known as the new generalized Chaplygin gas (NGCG) model, admits a scalar field description, which means that there e... |
1803.09247 | Gauranga Samanta | Parth Shah, Gauranga C. Samanta, Salvatore Capozziello | Qualitative behavior of cosmological models combining various matter
fields | 18 pages, 7 figures, accepted in IJMPA | null | 10.1142/S0217751X18501166 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The late time accelerated expansion of the universe can be realized using
scalar fields with given self-interacting potentials. Here we consider a
straightforward approach where a three cosmic fluid mixture is assumed. The
fluids are standard matter perfect fluid, dark matter, and a scalar field with
the role of dark... | [
{
"created": "Sun, 25 Mar 2018 12:59:16 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Jul 2018 05:30:14 GMT",
"version": "v2"
},
{
"created": "Tue, 3 Jul 2018 05:07:33 GMT",
"version": "v3"
}
] | 2018-07-25 | [
[
"Shah",
"Parth",
""
],
[
"Samanta",
"Gauranga C.",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | The late time accelerated expansion of the universe can be realized using scalar fields with given self-interacting potentials. Here we consider a straightforward approach where a three cosmic fluid mixture is assumed. The fluids are standard matter perfect fluid, dark matter, and a scalar field with the role of dark e... |
gr-qc/0610002 | Brijesh Sinha kumar | S. N. Pandey, B. K. Sinha, Raj Kumar | An Electrical Spinning Particle In Einstein's Unified Field Theory | 8 pages | null | null | null | gr-qc | null | Previous work on exact solutions has been shown that sources need to be
appended to the field equation of Einstein's unified field theory in order to
achieve physically meaningful results,such sources can be included in a
variational formulation by Borchsenius and moffat.The resulting field equations
and conservation... | [
{
"created": "Sun, 1 Oct 2006 10:09:47 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pandey",
"S. N.",
""
],
[
"Sinha",
"B. K.",
""
],
[
"Kumar",
"Raj",
""
]
] | Previous work on exact solutions has been shown that sources need to be appended to the field equation of Einstein's unified field theory in order to achieve physically meaningful results,such sources can be included in a variational formulation by Borchsenius and moffat.The resulting field equations and conservation i... |
gr-qc/0410036 | L. C. Garcia de Andrade | L. C. Garcia de Andrade | Non-Riemannian geometry of turbulent acoustic flows and analog gravity | Latex file | null | null | null | gr-qc | null | Non-Riemannian geometry of acoustic non-relativistic turbulent flows is
irrotationally perturbed generating a acoustic geometry model with acoustic
metric and acoustic Cartan contortion. The contortion term is due to
nonlinearities in the turbulent fluid. The acoustic curvature and acoustic
contortion are given by Di... | [
{
"created": "Fri, 8 Oct 2004 05:08:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"de Andrade",
"L. C. Garcia",
""
]
] | Non-Riemannian geometry of acoustic non-relativistic turbulent flows is irrotationally perturbed generating a acoustic geometry model with acoustic metric and acoustic Cartan contortion. The contortion term is due to nonlinearities in the turbulent fluid. The acoustic curvature and acoustic contortion are given by Dira... |
1408.4946 | Andrea Geralico | Donato Bini, Andrea Geralico, Robert T. Jantzen | Spin-geodesic deviations in the Schwarzschild spacetime | 16 pages, 3 figures; published version | Gen. Relativ. Gravit. 43, 959 (2011) | 10.1007/s10714-010-1111-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The deviation of the path of a spinning particle from a circular geodesic in
the Schwarzschild spacetime is studied by an extension of the idea of geodesic
deviation. Within the Mathisson-Papapetrou-Dixon model and assuming the spin
parameter to be sufficiently small so that it makes sense to linearize the
equations ... | [
{
"created": "Thu, 21 Aug 2014 10:48:08 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Jantzen",
"Robert T.",
""
]
] | The deviation of the path of a spinning particle from a circular geodesic in the Schwarzschild spacetime is studied by an extension of the idea of geodesic deviation. Within the Mathisson-Papapetrou-Dixon model and assuming the spin parameter to be sufficiently small so that it makes sense to linearize the equations of... |
2012.02068 | Norbert Bodendorfer | Norbert Bodendorfer, Muxin Han, Fabian Haneder, Hongguang Liu | Path integral renormalisation in loop quantum cosmology | 25 pages, 1 figure | Phys. Rev. D 103, 126021 (2021) | 10.1103/PhysRevD.103.126021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A coarse graining technique akin to block spin transformations that groups
together fiducial cells in a homogeneous and isotropic universe has been
recently developed in the context of loop quantum cosmology. The key technical
ingredient was an SU(1, 1) group and Lie algebra structure of the physical
observables as w... | [
{
"created": "Thu, 3 Dec 2020 16:57:21 GMT",
"version": "v1"
}
] | 2021-06-30 | [
[
"Bodendorfer",
"Norbert",
""
],
[
"Han",
"Muxin",
""
],
[
"Haneder",
"Fabian",
""
],
[
"Liu",
"Hongguang",
""
]
] | A coarse graining technique akin to block spin transformations that groups together fiducial cells in a homogeneous and isotropic universe has been recently developed in the context of loop quantum cosmology. The key technical ingredient was an SU(1, 1) group and Lie algebra structure of the physical observables as wel... |
1401.7638 | Mohamad Atazadeh | K. Atazadeh, Y. Heydarzade, F. Darabi | Einstein Static Universe in Braneworld Scenario | 6 pages, one section added, accepted in PLB. arXiv admin note: text
overlap with arXiv:1202.1397 by other authors | Phys. Lett. B 732 (2014) 223 | 10.1016/j.physletb.2014.03.009 | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/3.0/ | The stability of Einstein static universe against homogeneous scalar
perturbations in the context of braneworld scenario is investigated. The
stability regions are obtained in terms of the constant geometric linear
equation of state parameter $\omega_{extr}=p_{extr}/\rho_{extr}$ and are
studied for each evolutionary ... | [
{
"created": "Wed, 29 Jan 2014 19:46:48 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Mar 2014 08:01:47 GMT",
"version": "v2"
}
] | 2014-04-10 | [
[
"Atazadeh",
"K.",
""
],
[
"Heydarzade",
"Y.",
""
],
[
"Darabi",
"F.",
""
]
] | The stability of Einstein static universe against homogeneous scalar perturbations in the context of braneworld scenario is investigated. The stability regions are obtained in terms of the constant geometric linear equation of state parameter $\omega_{extr}=p_{extr}/\rho_{extr}$ and are studied for each evolutionary er... |
2203.09341 | Philippe Grandcl\'ement | Philippe Grandcl\'ement, Jordan Nicoules | Boundary conditions for stationary black holes ; Application to Kerr,
Martinez-Troncoso-Zanelli and hairy black holes | null | Phys. Rev. D, 105, 104011 (2022) | 10.1103/PhysRevD.105.104011 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work proposes a set of equations that can be used to numerically compute
spacetimes containing a stationary black hole. The formalism is based on the
3+1 decomposition of General Relativity with maximal slicing and spatial
harmonic gauge. The presence of the black hole is enforced using the notion of
apparent ho... | [
{
"created": "Thu, 17 Mar 2022 14:18:59 GMT",
"version": "v1"
},
{
"created": "Mon, 16 May 2022 08:49:26 GMT",
"version": "v2"
}
] | 2022-05-17 | [
[
"Grandclément",
"Philippe",
""
],
[
"Nicoules",
"Jordan",
""
]
] | This work proposes a set of equations that can be used to numerically compute spacetimes containing a stationary black hole. The formalism is based on the 3+1 decomposition of General Relativity with maximal slicing and spatial harmonic gauge. The presence of the black hole is enforced using the notion of apparent hori... |
2005.04770 | Andrea Giusti | Andrea Giusti, Valerio Faraoni | Quasilocal mass in scalar-tensor gravity: spherical symmetry | 11 pages, no figures, to appear in Class.Quant.Grav | null | 10.1088/1361-6382/aba845 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A recent generalization of the Hawking-Hayward quasilocal energy to
scalar-tensor gravity is adapted to general spherically symmetric geometries.
It is then applied to several black hole and other spherical solutions of
scalar-tensor and $f({\cal R}) $ gravity. The relations of this quasilocal
energy with the Abreu-N... | [
{
"created": "Sun, 10 May 2020 20:04:44 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Jul 2020 07:18:45 GMT",
"version": "v2"
}
] | 2020-07-27 | [
[
"Giusti",
"Andrea",
""
],
[
"Faraoni",
"Valerio",
""
]
] | A recent generalization of the Hawking-Hayward quasilocal energy to scalar-tensor gravity is adapted to general spherically symmetric geometries. It is then applied to several black hole and other spherical solutions of scalar-tensor and $f({\cal R}) $ gravity. The relations of this quasilocal energy with the Abreu-Nie... |
2206.10796 | Kiyoshi Shiraishi | Nahomi Kan, Takuma Aoyama, Kiyoshi Shiraishi | Classical and quantum bicosmology with noncommutativity | 19 pages, 15 figures. Revised version | Class.Quant.Grav. 40 (2023) 1, 015010 | 10.1088/1361-6382/aca868 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Recently, Falomir, Gamboa, Mendez, Gondolo and Maldonado proposed a
bicosmology scenario [1-4] for solving some cosmological problems related to
inflation, dark matter, and thermal history of the universe. Their plan is to
introduce noncommutativity into the momentum space of the two scale factors. In
the present pap... | [
{
"created": "Wed, 22 Jun 2022 01:30:29 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Nov 2022 00:13:19 GMT",
"version": "v2"
}
] | 2022-12-27 | [
[
"Kan",
"Nahomi",
""
],
[
"Aoyama",
"Takuma",
""
],
[
"Shiraishi",
"Kiyoshi",
""
]
] | Recently, Falomir, Gamboa, Mendez, Gondolo and Maldonado proposed a bicosmology scenario [1-4] for solving some cosmological problems related to inflation, dark matter, and thermal history of the universe. Their plan is to introduce noncommutativity into the momentum space of the two scale factors. In the present paper... |
2404.09181 | Jan Harms | Parameswaran Ajith, Pau Amaro Seoane, Manuel Arca Sedda, Riccardo
Arcodia, Francesca Badaracco, Enis Belgacem, Stefano Benetti, Alexey Bobrick,
Alessandro Bonforte, Elisa Bortolas, Valentina Braito, Marica Branchesi, Adam
Burrows, Enrico Cappellaro, Roberto Della Ceca, Chandrachur Chakraborty,
Shreevathsa Chala... | The Lunar Gravitational-wave Antenna: Mission Studies and Science Case | null | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | The Lunar Gravitational-wave Antenna (LGWA) is a proposed array of
next-generation inertial sensors to monitor the response of the Moon to
gravitational waves (GWs). Given the size of the Moon and the expected noise
produced by the lunar seismic background, the LGWA would be able to observe GWs
from about 1 mHz to 1 ... | [
{
"created": "Sun, 14 Apr 2024 08:13:46 GMT",
"version": "v1"
}
] | 2024-04-18 | [
[
"Ajith",
"Parameswaran",
""
],
[
"Seoane",
"Pau Amaro",
""
],
[
"Sedda",
"Manuel Arca",
""
],
[
"Arcodia",
"Riccardo",
""
],
[
"Badaracco",
"Francesca",
""
],
[
"Belgacem",
"Enis",
""
],
[
"Benetti",
"Stefano",... | The Lunar Gravitational-wave Antenna (LGWA) is a proposed array of next-generation inertial sensors to monitor the response of the Moon to gravitational waves (GWs). Given the size of the Moon and the expected noise produced by the lunar seismic background, the LGWA would be able to observe GWs from about 1 mHz to 1 Hz... |
gr-qc/0402019 | Giovanni Imponente | Giovanni Imponente and Giovanni Montani | Covariant Lyapunov Exponents for the Mixmaster | 3 pages, no figures, proceedings of the X Marcel Grossmann on General
Relativity, Rio de Janeiro, 20-26 July 2003 | null | 10.1142/9789812704030_0221 | null | gr-qc hep-th | null | The dynamics of the Mixmaster Universe is analized in a covariant picture via
Misner--Chitre-like variables for an ADM Hamiltonian approach. The system
outcomes as isomorphic to a billiard on the Lobachevsky plane and Lyapunov
exponents are calculated explicitly.
| [
{
"created": "Wed, 4 Feb 2004 12:10:38 GMT",
"version": "v1"
}
] | 2016-11-09 | [
[
"Imponente",
"Giovanni",
""
],
[
"Montani",
"Giovanni",
""
]
] | The dynamics of the Mixmaster Universe is analized in a covariant picture via Misner--Chitre-like variables for an ADM Hamiltonian approach. The system outcomes as isomorphic to a billiard on the Lobachevsky plane and Lyapunov exponents are calculated explicitly. |
gr-qc/0211020 | Peter Dunsby | Naureen Goheer and Peter K. S. Dunsby | Exponential Potentials on the Brane | 14 Pages RevTeX | Phys.Rev. D67 (2003) 103513 | 10.1103/PhysRevD.67.103513 | null | gr-qc | null | In this paper we study the cosmological dynamics of Randall-Sundrum
braneworld type scenarios in which the five-dimensional Weyl tensor has a
non-vanishing projection onto the three-brane where matter fields are confined.
Using dynamical systems techniques, we study how the state space of
Friedmann-Lemaitre-Robertson... | [
{
"created": "Wed, 6 Nov 2002 12:21:08 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Goheer",
"Naureen",
""
],
[
"Dunsby",
"Peter K. S.",
""
]
] | In this paper we study the cosmological dynamics of Randall-Sundrum braneworld type scenarios in which the five-dimensional Weyl tensor has a non-vanishing projection onto the three-brane where matter fields are confined. Using dynamical systems techniques, we study how the state space of Friedmann-Lemaitre-Robertson-W... |
2202.12784 | Kentaro Somiya | Seiya Sasaoka, Hirotaka Takahashi, Yilun Hou, and Kentaro Somiya | Localization of gravitational waves using machine learning | 5 pages, 5 figures | null | 10.1103/PhysRevD.105.103030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An observation of gravitational waves is a trigger of the multi-messenger
search of an astronomical event. A combination of the data from two or three
gravitational wave telescopes indicates the location of a source and
low-latency data analysis is key to transferring the information to other
telescopes sensitive at ... | [
{
"created": "Fri, 25 Feb 2022 15:59:38 GMT",
"version": "v1"
}
] | 2022-06-08 | [
[
"Sasaoka",
"Seiya",
""
],
[
"Takahashi",
"Hirotaka",
""
],
[
"Hou",
"Yilun",
""
],
[
"Somiya",
"Kentaro",
""
]
] | An observation of gravitational waves is a trigger of the multi-messenger search of an astronomical event. A combination of the data from two or three gravitational wave telescopes indicates the location of a source and low-latency data analysis is key to transferring the information to other telescopes sensitive at di... |
1710.07172 | Chen Songbai | Mingzhi Wang, Songbai Chen, Jiliang Jing | Shadows of Bonnor black dihole by chaotic lensing | 18 pages, 9 figures; The title is changed and some discussion are
added. The modified version for publication in PRD | Phys. Rev. D 97, 064029 (2018) | 10.1103/PhysRevD.97.064029 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have studied numerically the shadows of Bonnor black dihole through the
technique of backward ray-tracing. The presence of magnetic dipole yields
non-integrable photon motion, which affects sharply the shadow of the compact
object. Our results show that there exists a critical value for the shadow. As
the magnetic... | [
{
"created": "Thu, 19 Oct 2017 15:03:33 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Oct 2017 02:02:09 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Mar 2018 01:54:30 GMT",
"version": "v3"
}
] | 2018-04-04 | [
[
"Wang",
"Mingzhi",
""
],
[
"Chen",
"Songbai",
""
],
[
"Jing",
"Jiliang",
""
]
] | We have studied numerically the shadows of Bonnor black dihole through the technique of backward ray-tracing. The presence of magnetic dipole yields non-integrable photon motion, which affects sharply the shadow of the compact object. Our results show that there exists a critical value for the shadow. As the magnetic d... |
gr-qc/0404117 | Peter Hogan | E. M. O'Shea | Properties of Information Carrying Waves in Cosmology | 15 pages, Latex File, accepted for publication in Physical Review D | Phys.Rev. D70 (2004) 024001 | 10.1103/PhysRevD.70.024001 | null | gr-qc | null | Recently we studied the effects of information carrying waves propagating
through isotropic cosmologies. By information carrying we mean that the waves
have an arbitrary dependence on a function. We found that the waves introduce
shear and anisotropic stress into the universe. We then constructed explicit
examples of... | [
{
"created": "Wed, 28 Apr 2004 19:57:55 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"O'Shea",
"E. M.",
""
]
] | Recently we studied the effects of information carrying waves propagating through isotropic cosmologies. By information carrying we mean that the waves have an arbitrary dependence on a function. We found that the waves introduce shear and anisotropic stress into the universe. We then constructed explicit examples of p... |
2212.07204 | Salih Kibaro\u{g}lu | Salih Kibaro\u{g}lu and Emilio Elizalde | Cosmological implications of Born-Infeld-$f(R)$ gravity | 7 pages, 3 figures. This version was accepted in IJMPD | Int. J. Mod. Phys. D 32, 2350012 (2023) | 10.1142/S0218271823500128 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A modified Born-Infeld gravitation theory with a $f\left(R\right)$ function
being added to the determinant action is analyzed from a cosmological
viewpoint. The corresponding accelerating dynamics are studied in a simplified
conformal approach without matter. Three different structures for the auxiliary
metric functi... | [
{
"created": "Wed, 14 Dec 2022 13:06:13 GMT",
"version": "v1"
}
] | 2023-03-02 | [
[
"Kibaroğlu",
"Salih",
""
],
[
"Elizalde",
"Emilio",
""
]
] | A modified Born-Infeld gravitation theory with a $f\left(R\right)$ function being added to the determinant action is analyzed from a cosmological viewpoint. The corresponding accelerating dynamics are studied in a simplified conformal approach without matter. Three different structures for the auxiliary metric function... |
2209.00679 | Roman Konoplya | R. A. Konoplya, A. Zhidenko | First few overtones probe the event horizon geometry | 5 pages, two figures, revtex, one figure and a reference are added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is broadly believed that quasinormal modes (QNMs) cannot tell the
black-hole near-horizon geometry, because usually the low-lying modes are
determined by the scattering of perturbations around the peak of the effective
potential. Using the general parametrization of the black-hole spacetimes
respecting the generic... | [
{
"created": "Thu, 1 Sep 2022 18:31:03 GMT",
"version": "v1"
},
{
"created": "Sun, 25 Sep 2022 11:10:21 GMT",
"version": "v2"
}
] | 2022-09-27 | [
[
"Konoplya",
"R. A.",
""
],
[
"Zhidenko",
"A.",
""
]
] | It is broadly believed that quasinormal modes (QNMs) cannot tell the black-hole near-horizon geometry, because usually the low-lying modes are determined by the scattering of perturbations around the peak of the effective potential. Using the general parametrization of the black-hole spacetimes respecting the generic p... |
1508.06100 | Maurizio Gasperini | M. Gasperini | Cosmology and short-distance gravity | 8 pages, no figures. Essay written for the 2015 Awards for Essays on
Gravitationv (Gravity Research Foundation, Wellesley Hills, MA) and awarded
with "Honorable Mention". To appear in the "October 2015 Special Issue" of
Int. J. Mod. Phys. D | Int. J. Mod. Phys. D 24, 1544003 (2015) | 10.1142/S0218271815440034 | BA-TH/694-15 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If the observed dark-energy density $\rho_\Lambda$ is interpreted as the net
contribution of the energy density of the vacuum, $\rho_\Lambda \equiv \rho_V
\sim M_V^4$, and the corresponding vacuum length scale $\lambda_V = M_V^{-1}$
as the cutoff scale controlling the low-energy, effective field-theory limit of
gravi... | [
{
"created": "Tue, 25 Aug 2015 10:32:27 GMT",
"version": "v1"
}
] | 2015-10-01 | [
[
"Gasperini",
"M.",
""
]
] | If the observed dark-energy density $\rho_\Lambda$ is interpreted as the net contribution of the energy density of the vacuum, $\rho_\Lambda \equiv \rho_V \sim M_V^4$, and the corresponding vacuum length scale $\lambda_V = M_V^{-1}$ as the cutoff scale controlling the low-energy, effective field-theory limit of gravity... |
gr-qc/0410063 | Roman Pasechnik | Roman S. Pasechnik, Gregory M. Vereshkov | Self-consistent invariant dynamics of scalar perturbations in the
inflationary cosmology | LaTeX2e, 31 pages, 3 figures | null | null | null | gr-qc | null | The gauge-independent invariant approach to investigation of the linear
scalar perturbations of inflaton and gravitational fields is developed in
self-consistent way. This approach allows to compare various gauges used by
other researchers and to find unambiguous selection criteria of physical and
coordinate effects.... | [
{
"created": "Fri, 15 Oct 2004 18:41:37 GMT",
"version": "v1"
},
{
"created": "Sat, 16 Oct 2004 22:44:08 GMT",
"version": "v2"
},
{
"created": "Sun, 12 Feb 2006 20:55:02 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Pasechnik",
"Roman S.",
""
],
[
"Vereshkov",
"Gregory M.",
""
]
] | The gauge-independent invariant approach to investigation of the linear scalar perturbations of inflaton and gravitational fields is developed in self-consistent way. This approach allows to compare various gauges used by other researchers and to find unambiguous selection criteria of physical and coordinate effects. W... |
1607.07118 | Hee-Suk Cho | Hee-Suk Cho | Accuracy in Measuring the Neutron Star Mass in Gravitational Wave
Parameter Estimation for Black Hole-Neutron Star Binaries | 5 pages, 2 figures, submitted to JKPS | JKPS 69, 884 (2016) | 10.3938/jkps.69.884 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, two gravitational wave (GW) signals, named as GW150914 and
GW151226, have been detected by the two LIGO detectors. Although both signals
were identified as originating from merging black hole (BH) binaries, GWs from
systems containing neutron stars (NSs) are also expected to be detected in the
near future b... | [
{
"created": "Mon, 25 Jul 2016 00:54:27 GMT",
"version": "v1"
}
] | 2016-09-28 | [
[
"Cho",
"Hee-Suk",
""
]
] | Recently, two gravitational wave (GW) signals, named as GW150914 and GW151226, have been detected by the two LIGO detectors. Although both signals were identified as originating from merging black hole (BH) binaries, GWs from systems containing neutron stars (NSs) are also expected to be detected in the near future by ... |
0903.3087 | Xin-Zhou Li | Chang-Bo Sun, Jia-Ling Wang and Xin-Zhou Li | Viscous Cardassian universe | 13 pages, 9 figures, accepted in Int. J. Mod. Phys. D | Int.J.Mod.Phys.D18:1303-1318,2009 | 10.1142/S0218271809015102 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The viscous Cardassian cosmology is discussed, assuming that there is a bulk
viscosity in the cosmic fluid. The dynamical analysis indicates that there
exists a singular curve in the phase diagram of viscous Cardassian model. In
the viscous PL model, the equation-of-state parameter $w_{k}$ is no longer a
constant and... | [
{
"created": "Wed, 18 Mar 2009 04:41:30 GMT",
"version": "v1"
}
] | 2014-11-18 | [
[
"Sun",
"Chang-Bo",
""
],
[
"Wang",
"Jia-Ling",
""
],
[
"Li",
"Xin-Zhou",
""
]
] | The viscous Cardassian cosmology is discussed, assuming that there is a bulk viscosity in the cosmic fluid. The dynamical analysis indicates that there exists a singular curve in the phase diagram of viscous Cardassian model. In the viscous PL model, the equation-of-state parameter $w_{k}$ is no longer a constant and i... |
gr-qc/0309022 | Julio Cesar Fabris | F.G. Alvarenga, A.B. Batista, J.C. Fabris and G.T. Marques
(Departamento de Fisica, Universidade Federal do Espirito Santo, Espirito
Santo, Brazil) | Zero temperature black holes and the failure of semi-classical analysis | Latex file, 8 pages | null | null | null | gr-qc hep-th | null | The extreme Reissner-Nordstr\"om black holes have zero surface gravity.
However, a semi-classical analysis seems to be ill-definite for these objects
and apparently no notion of temperature exists for them. It is argued here that
these properties are shared for all kind of black holes whose surface gravity
is zero. T... | [
{
"created": "Wed, 3 Sep 2003 18:09:37 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Alvarenga",
"F. G.",
"",
"Departamento de Fisica, Universidade Federal do Espirito Santo, Espirito\n Santo, Brazil"
],
[
"Batista",
"A. B.",
"",
"Departamento de Fisica, Universidade Federal do Espirito Santo, Espirito\n Santo, Brazil"
],
[
"Fabris",
"J. C.",
... | The extreme Reissner-Nordstr\"om black holes have zero surface gravity. However, a semi-classical analysis seems to be ill-definite for these objects and apparently no notion of temperature exists for them. It is argued here that these properties are shared for all kind of black holes whose surface gravity is zero. Two... |
gr-qc/9906079 | Zahid Zakir | Zahid Zakir (CTPA) | Gravitation as a Quantum Diffusion | Published in: "Z.Zakir (2003) Structure of Space-Time and Matter,
CTPA, Tashkent." | Theor. Phys. Astrophys. and Cosmol., 4 (2009) 1 | 10.9751/TPAC.3000-013 | null | gr-qc | null | Inhomogeneous Nelson's diffusion in flat spacetime with a tensor of diffusion
can be described as a homogeneous one in a Riemannian manifold with this tensor
of diffusion as a metric tensor. The influence of matter to the energy density
of the stochastic background (vacuum) is considered. It is shown that
gravitation... | [
{
"created": "Thu, 17 Jun 1999 23:12:26 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Oct 2003 09:51:26 GMT",
"version": "v2"
}
] | 2012-10-09 | [
[
"Zakir",
"Zahid",
"",
"CTPA"
]
] | Inhomogeneous Nelson's diffusion in flat spacetime with a tensor of diffusion can be described as a homogeneous one in a Riemannian manifold with this tensor of diffusion as a metric tensor. The influence of matter to the energy density of the stochastic background (vacuum) is considered. It is shown that gravitation c... |
1004.4197 | Edward Malec | Edward Malec and Tomasz Rembiasz | General Relativistic versus Newtonian: a universality in radiation
hydrodynamics | 8 pages, 4 figures | Phys.Rev.D82:124005,2010 | 10.1103/PhysRevD.82.124005 | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compare Newtonian and general relativistic descriptions of the stationary
accretion of self-gravitating fluids onto compact bodies. Spherical symmetry
and thin gas approximation are assumed. Luminosity depends, amongst other
factors, on the temperature and the contribution of gas to the total mass, in
both -- gene... | [
{
"created": "Fri, 23 Apr 2010 18:18:21 GMT",
"version": "v1"
}
] | 2010-12-24 | [
[
"Malec",
"Edward",
""
],
[
"Rembiasz",
"Tomasz",
""
]
] | We compare Newtonian and general relativistic descriptions of the stationary accretion of self-gravitating fluids onto compact bodies. Spherical symmetry and thin gas approximation are assumed. Luminosity depends, amongst other factors, on the temperature and the contribution of gas to the total mass, in both -- genera... |
gr-qc/9711002 | Luis Herrera | L.Herrera, A.Di Prisco, J.L.Hernandez-Pastora (Area de Fisica Teorica,
Universidad de Salamanca, Spain), N.O.Santos (Observatorio Nacional, Rio de
Janeiro, Brasil) | On the role of density inhomogeneity and local anisotropy in the fate of
spherical collapse | 13 pages in Latex, to appear in Physics Letters A | null | 10.1016/S0375-9601(97)00874-8 | null | gr-qc | null | We obtain an expression for the active gravitational mass of a collapsing
fluid distribution, which brings out the role of density inhomogeneity and
local anisotropy in the fate of spherical collapse.
| [
{
"created": "Mon, 3 Nov 1997 16:03:47 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Herrera",
"L.",
"",
"Area de Fisica Teorica,\n Universidad de Salamanca, Spain"
],
[
"Di Prisco",
"A.",
"",
"Area de Fisica Teorica,\n Universidad de Salamanca, Spain"
],
[
"Hernandez-Pastora",
"J. L.",
"",
"Area de Fisica Teorica,\n Universidad de Salam... | We obtain an expression for the active gravitational mass of a collapsing fluid distribution, which brings out the role of density inhomogeneity and local anisotropy in the fate of spherical collapse. |
2008.09389 | Andrea Geralico | Donato Bini, Thibault Damour, Andrea Geralico, Stefano Laporta,
Pierpaolo Mastrolia | Gravitational dynamics at $O(G^6)$: perturbative gravitational
scattering meets experimental mathematics | 9 pages, no figures, one ancillary text file | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A recently introduced approach to the gravitational dynamics of binary
systems involves intricate integrals, linked to nonlocal-in-time interactions
arising at the 5-loop level of classical gravitational scattering. We complete
the analytical evaluation of classical gravitational scattering at the sixth
order in Newt... | [
{
"created": "Fri, 21 Aug 2020 09:42:42 GMT",
"version": "v1"
}
] | 2020-08-24 | [
[
"Bini",
"Donato",
""
],
[
"Damour",
"Thibault",
""
],
[
"Geralico",
"Andrea",
""
],
[
"Laporta",
"Stefano",
""
],
[
"Mastrolia",
"Pierpaolo",
""
]
] | A recently introduced approach to the gravitational dynamics of binary systems involves intricate integrals, linked to nonlocal-in-time interactions arising at the 5-loop level of classical gravitational scattering. We complete the analytical evaluation of classical gravitational scattering at the sixth order in Newton... |
1412.4915 | Dmitry Shogin | Dmitry Shogin and Per Amund Amundsen and Sigbj{\o}rn Hervik | On the viability of the truncated Israel-Stewart theory in cosmology | 18 pages, 2 figures | Class. Quantum Grav. 32 (2015) 195012 | 10.1088/0264-9381/32/19/195012 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply the causal Israel-Stewart theory of irreversible thermodynamics to
model the matter content of the universe as a dissipative fluid with bulk and
shear viscosity. Along with the full transport equations we consider their
widely used truncated version. By implementing a dynamical systems approach to
Bianchi ty... | [
{
"created": "Tue, 16 Dec 2014 08:29:44 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Feb 2015 13:20:03 GMT",
"version": "v2"
},
{
"created": "Wed, 23 Sep 2015 10:39:03 GMT",
"version": "v3"
}
] | 2015-09-24 | [
[
"Shogin",
"Dmitry",
""
],
[
"Amundsen",
"Per Amund",
""
],
[
"Hervik",
"Sigbjørn",
""
]
] | We apply the causal Israel-Stewart theory of irreversible thermodynamics to model the matter content of the universe as a dissipative fluid with bulk and shear viscosity. Along with the full transport equations we consider their widely used truncated version. By implementing a dynamical systems approach to Bianchi type... |
1106.2286 | Subenoy Chakraborty | Ritabrata Biswas, Nairwita Mazumder, Subenoy Chakraborty | Lemaitre-Tolman-Bondi model of the universe and Hawking radiation of a
dynamical horizon | have to modify the work | null | 10.1007/s10773-011-0882-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper deals with anisotropic spherically symmetric Lemaitre-Tolman-Bondi
model of the universe bounded by the apparent horizon. Using Hamilton-Jacobi
method for both massive and massless test particles, we are able to show that
the temperature associated with the apparent horizon due to Hawking radiation
is the u... | [
{
"created": "Sun, 12 Jun 2011 07:58:46 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Sep 2012 17:20:37 GMT",
"version": "v2"
}
] | 2015-05-28 | [
[
"Biswas",
"Ritabrata",
""
],
[
"Mazumder",
"Nairwita",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | The paper deals with anisotropic spherically symmetric Lemaitre-Tolman-Bondi model of the universe bounded by the apparent horizon. Using Hamilton-Jacobi method for both massive and massless test particles, we are able to show that the temperature associated with the apparent horizon due to Hawking radiation is the usu... |
1608.08360 | Paolo Pani | Jos\'e P. S. Lemos, Paolo Pani | Gravitational fields with sources: From compact objects to black holes | Report of the BH4 Parallel Session of the 14th Marcel Grossmann
Meeting - MG14 | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report on the Parallel Session BH4 "Gravitational fields with sources:
From compact objects to black holes" of the 14th Marcel Grossmann Meeting held
at Sapienza University of Rome in 2015.
| [
{
"created": "Tue, 30 Aug 2016 08:26:27 GMT",
"version": "v1"
}
] | 2016-09-06 | [
[
"Lemos",
"José P. S.",
""
],
[
"Pani",
"Paolo",
""
]
] | We report on the Parallel Session BH4 "Gravitational fields with sources: From compact objects to black holes" of the 14th Marcel Grossmann Meeting held at Sapienza University of Rome in 2015. |
0802.1992 | Jean-Paul Mbelek | Jean Paul Mbelek | The gravitational phase shift test of general relativity | 4 pages, 1 figure. The abstract and experiments description are
lengthened ; typos and sign errors corrected | null | null | null | gr-qc astro-ph physics.optics | null | The aim of this paper is to study the extra phase shift that general
relativity (GR) predicts for a radial light ray propagating in the vicinity of
a static spherical symmetric body. It appears that the gravitational phase
shift test yields a better sensitivity than the gravitational frequency shift
or the excess tim... | [
{
"created": "Thu, 14 Feb 2008 13:53:12 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Feb 2008 22:19:03 GMT",
"version": "v2"
},
{
"created": "Fri, 22 Feb 2008 11:43:54 GMT",
"version": "v3"
}
] | 2008-02-22 | [
[
"Mbelek",
"Jean Paul",
""
]
] | The aim of this paper is to study the extra phase shift that general relativity (GR) predicts for a radial light ray propagating in the vicinity of a static spherical symmetric body. It appears that the gravitational phase shift test yields a better sensitivity than the gravitational frequency shift or the excess time ... |
1301.5832 | Puxun Wu | Peng Wang, Puxun Wu, Hongwei Yu | A new extended quintessence | 12 pages, 2 figures, two references added | Eur. Phys. J. C (2012) 72:2245 | 10.1140/epjc/s10052-012-2245-1 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extended quintessence is obtained by coupling a normal scalar field to the
Ricci scalar defined in the metric formalism. In this paper, we propose a new
extended quintessence dark energy by introducing a non-minimal coupling between
the quintessence and gravity, but with the Ricci scalar given from the Palatini
forma... | [
{
"created": "Thu, 24 Jan 2013 16:30:16 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Feb 2013 12:16:33 GMT",
"version": "v2"
}
] | 2013-02-27 | [
[
"Wang",
"Peng",
""
],
[
"Wu",
"Puxun",
""
],
[
"Yu",
"Hongwei",
""
]
] | Extended quintessence is obtained by coupling a normal scalar field to the Ricci scalar defined in the metric formalism. In this paper, we propose a new extended quintessence dark energy by introducing a non-minimal coupling between the quintessence and gravity, but with the Ricci scalar given from the Palatini formali... |
2307.02498 | Ghulam Mustafa | N. S. Kavya, V. Venkatesha, G. Mustafa, P.K. Sahoo | On possible wormhole solutions supported by non-commutative geometry
within $f(R, L_m)$ gravity | AOP accepted version | Annals of Physics, 455, 169383 (2023) | 10.1016/j.aop.2023.169383 | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Non-commutativity is a key feature of spacetime geometry. The current article
explores the traversable wormhole solutions in the framework of $f(R,L_m)$
gravity within non-commutative geometry. By using the Gaussian and Lorentzian
distributions, we construct tideless wormholes for the nonlinear $f(R,L_m)$
model $f(R,... | [
{
"created": "Tue, 4 Jul 2023 09:18:38 GMT",
"version": "v1"
}
] | 2023-07-10 | [
[
"Kavya",
"N. S.",
""
],
[
"Venkatesha",
"V.",
""
],
[
"Mustafa",
"G.",
""
],
[
"Sahoo",
"P. K.",
""
]
] | Non-commutativity is a key feature of spacetime geometry. The current article explores the traversable wormhole solutions in the framework of $f(R,L_m)$ gravity within non-commutative geometry. By using the Gaussian and Lorentzian distributions, we construct tideless wormholes for the nonlinear $f(R,L_m)$ model $f(R,L_... |
1402.1998 | Alexander Zhidenko | R. A. Konoplya and A. Zhidenko | Massive charged scalar field in the Kerr-Newman background II: Hawking
radiation | 6 pages, 3 figures | Phys. Rev. D 89, 084015 (2014) | 10.1103/PhysRevD.89.084015 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform accurate calculations of the energy-, momentum-, and
charge-emission rates of a charged scalar field in the background of the
Kerr-Newman black hole at the range of parameters for which the effect is not
negligibly small and, at the same time, the semiclassical regime is, at least
marginally, valid. For bl... | [
{
"created": "Sun, 9 Feb 2014 22:12:53 GMT",
"version": "v1"
},
{
"created": "Sun, 16 Feb 2014 19:39:22 GMT",
"version": "v2"
},
{
"created": "Thu, 3 Apr 2014 17:12:02 GMT",
"version": "v3"
}
] | 2014-04-23 | [
[
"Konoplya",
"R. A.",
""
],
[
"Zhidenko",
"A.",
""
]
] | We perform accurate calculations of the energy-, momentum-, and charge-emission rates of a charged scalar field in the background of the Kerr-Newman black hole at the range of parameters for which the effect is not negligibly small and, at the same time, the semiclassical regime is, at least marginally, valid. For blac... |
gr-qc/0609053 | Keisuke Taniguchi | Keisuke Taniguchi, Thomas W. Baumgarte, Joshua A. Faber, Stuart L.
Shapiro | Quasiequilibrium sequences of black-hole--neutron-star binaries in
general relativity | 5 pages, 1 figure, revtex4, published in Phys.Rev.D | Phys.Rev. D74 (2006) 041502 | 10.1103/PhysRevD.74.041502 | null | gr-qc astro-ph | null | We construct quasiequilibrium sequences of black hole-neutron star binaries
for arbitrary mass ratios by solving the constraint equations of general
relativity in the conformal thin-sandwich decomposition. We model the neutron
star as a stationary polytrope satisfying the relativistic equations of
hydrodynamics, and ... | [
{
"created": "Fri, 15 Sep 2006 20:00:07 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Taniguchi",
"Keisuke",
""
],
[
"Baumgarte",
"Thomas W.",
""
],
[
"Faber",
"Joshua A.",
""
],
[
"Shapiro",
"Stuart L.",
""
]
] | We construct quasiequilibrium sequences of black hole-neutron star binaries for arbitrary mass ratios by solving the constraint equations of general relativity in the conformal thin-sandwich decomposition. We model the neutron star as a stationary polytrope satisfying the relativistic equations of hydrodynamics, and ac... |
gr-qc/0101084 | Alena Pravdova | A. Pravdova, J. Bicak | Axisymmetric electrovacuum spacetimes with an additional Killing vector
and radiation | 2 pages, contribution to the 9th Marcel Grossmann meeting (MG9),
Rome, July 2000 | null | 10.1142/9789812777386_0113 | null | gr-qc | null | Main results concerning allowable additional symmetries of axially symmetric
electrovacuum spacetimes are summarized. These are translational Killing
vectors and the boost Killing vector. However, this is only the boost symmetry
that does not exclude radiation and permit a spacetime to be asymptotically
flat with glo... | [
{
"created": "Sat, 20 Jan 2001 13:50:34 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Pravdova",
"A.",
""
],
[
"Bicak",
"J.",
""
]
] | Main results concerning allowable additional symmetries of axially symmetric electrovacuum spacetimes are summarized. These are translational Killing vectors and the boost Killing vector. However, this is only the boost symmetry that does not exclude radiation and permit a spacetime to be asymptotically flat with globa... |
2212.13357 | Yang Huang | Yang Huang, Dao-Jun Liu, Hongsheng Zhang | Novel black holes in higher derivative gravity | 12 pages, 10 figures, references added, published in JHEP | null | 10.1007/JHEP02(2023)057 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find a class of novel black holes in higher derivative theory. The novel
black holes follow behavior of~\sch\ ones at large mass limit, while
dramatically differentiate from ~\sch\ ones for little holes because of the
effects which may root in quantum gravity. The temperature of the hole takes
maximum for a specif... | [
{
"created": "Tue, 27 Dec 2022 04:21:31 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Feb 2023 14:17:00 GMT",
"version": "v2"
}
] | 2023-02-16 | [
[
"Huang",
"Yang",
""
],
[
"Liu",
"Dao-Jun",
""
],
[
"Zhang",
"Hongsheng",
""
]
] | We find a class of novel black holes in higher derivative theory. The novel black holes follow behavior of~\sch\ ones at large mass limit, while dramatically differentiate from ~\sch\ ones for little holes because of the effects which may root in quantum gravity. The temperature of the hole takes maximum for a specific... |
gr-qc/0310110 | Jose Geraldo Pereira | R. Aldrovandi, J. G. Pereira and K. H. Vu | Gravitation: Global Formulation and Quantum Effects | Latex (IOP style), 14 pages, 3 figures. To appear in Classical and
Quantum Gravity | Class.Quant.Grav. 21 (2004) 51-62 | 10.1088/0264-9381/21/1/004 | null | gr-qc hep-th | null | A nonintegrable phase-factor global approach to gravitation is developed by
using the similarity of teleparallel gravity with electromagnetism. The phase
shifts of both the COW and the gravitational Aharonov-Bohm effects are
obtained. It is then shown, by considering a simple slit experiment, that in
the classical li... | [
{
"created": "Fri, 24 Oct 2003 20:00:23 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Aldrovandi",
"R.",
""
],
[
"Pereira",
"J. G.",
""
],
[
"Vu",
"K. H.",
""
]
] | A nonintegrable phase-factor global approach to gravitation is developed by using the similarity of teleparallel gravity with electromagnetism. The phase shifts of both the COW and the gravitational Aharonov-Bohm effects are obtained. It is then shown, by considering a simple slit experiment, that in the classical limi... |
2310.04053 | Tao Zhu | G. Abbas, H. Rehman, Tao Zhu, Qiang Wu, and G. Mustafa | Accretion disk around Reissner-Nordstr\"{o}m black hole coupled with a
nonlinear electrodynamics field | 14 pages, 8 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The phenomenon by which matter accumulates in the vicinity of a huge
celestial object is known as accretion. The gravitational energy is excreted as
a consequence of infalling matter onto compact objects. The accretion procedure
around celestial bodies like neutron stars, white dwarfs, and black holes has
considerabl... | [
{
"created": "Fri, 6 Oct 2023 07:05:44 GMT",
"version": "v1"
}
] | 2023-10-09 | [
[
"Abbas",
"G.",
""
],
[
"Rehman",
"H.",
""
],
[
"Zhu",
"Tao",
""
],
[
"Wu",
"Qiang",
""
],
[
"Mustafa",
"G.",
""
]
] | The phenomenon by which matter accumulates in the vicinity of a huge celestial object is known as accretion. The gravitational energy is excreted as a consequence of infalling matter onto compact objects. The accretion procedure around celestial bodies like neutron stars, white dwarfs, and black holes has considerable ... |
2102.11353 | Sujoy Modak | Saurya Das, Sujoy K. Modak | A novel mechanism for probing the Planck scale | 6 pages, 2 figures | Class.Quant.Grav. 39 (2022) 1, 015005 | 10.1088/1361-6382/ac38d3 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | The Planck or the quantum gravity scale, being $16$ orders of magnitude
greater than the electroweak scale, is often considered inaccessible by current
experimental techniques. However, it was shown recently by one of the current
authors that quantum gravity effects via the Generalized Uncertainty Principle
affects t... | [
{
"created": "Mon, 22 Feb 2021 20:49:05 GMT",
"version": "v1"
}
] | 2024-04-05 | [
[
"Das",
"Saurya",
""
],
[
"Modak",
"Sujoy K.",
""
]
] | The Planck or the quantum gravity scale, being $16$ orders of magnitude greater than the electroweak scale, is often considered inaccessible by current experimental techniques. However, it was shown recently by one of the current authors that quantum gravity effects via the Generalized Uncertainty Principle affects the... |
2303.15760 | Jing-Bo Wang | Jingbo Wang | The topological order in loop quantum gravity | 7 pages, comments are welcome. arXiv admin note: substantial text
overlap with arXiv:2209.12455; text overlap with arXiv:2104.00227 | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Topological order (long-range entanglement) is a new type of order that
beyond Landau's symmetry breaking theory. This concept plays important roles in
modern condensed matter physics. The topological entanglement entropy provides
a universal quantum number to characterize the topological order in a system.
The topol... | [
{
"created": "Tue, 28 Mar 2023 06:38:38 GMT",
"version": "v1"
}
] | 2023-03-29 | [
[
"Wang",
"Jingbo",
""
]
] | Topological order (long-range entanglement) is a new type of order that beyond Landau's symmetry breaking theory. This concept plays important roles in modern condensed matter physics. The topological entanglement entropy provides a universal quantum number to characterize the topological order in a system. The topolog... |
gr-qc/0407109 | Tomohiro Harada | Tomohiro Harada | Gravitational collapse and naked singularities | 12 pages, to appear in the Proceedings of the International
Conference on Gravitation and Cosmology (ICGC-2004), ed. by B.R. Iyer, V.
Kuriakose and C.V. Vishveshwara, published by Pramana, minor corrections | Pramana63:741-754,2004 | 10.1007/BF02705196 | null | gr-qc | null | Gravitational collapse is one of the most striking phenomena in gravitational
physics. The cosmic censorship conjecture has provided strong motivation for
researches in this field. In the absence of general proof for the censorship,
many examples have been proposed, in which naked singularity is the outcome of
gravit... | [
{
"created": "Wed, 28 Jul 2004 22:02:52 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Aug 2004 15:29:51 GMT",
"version": "v2"
},
{
"created": "Mon, 13 Sep 2004 11:57:27 GMT",
"version": "v3"
},
{
"created": "Mon, 4 Oct 2004 09:04:24 GMT",
"version": "v4"
}
] | 2009-09-29 | [
[
"Harada",
"Tomohiro",
""
]
] | Gravitational collapse is one of the most striking phenomena in gravitational physics. The cosmic censorship conjecture has provided strong motivation for researches in this field. In the absence of general proof for the censorship, many examples have been proposed, in which naked singularity is the outcome of gravitat... |
1805.07419 | Tiberiu Harko | Jimin Wu, Guangjie Li, Tiberiu Harko, Shi-Dong Liang | Palatini formulation of $f(R,T)$ gravity theory, and its cosmological
implications | 22 pages, no figures, accepted for publication in EPJC; references
added | The European Physical Journal C 78, 430 (2018) | 10.1140/epjc/s10052-018-5923-9 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Palatini formulation of $f(R,T)$ gravity theory, in which a
nonminimal coupling between the Ricci scalar and the trace of the
energy-momentum tensor is introduced, by considering the metric and the affine
connection as independent field variables. The field equations and the
equations of motion for ma... | [
{
"created": "Fri, 18 May 2018 19:49:16 GMT",
"version": "v1"
},
{
"created": "Thu, 31 May 2018 06:37:54 GMT",
"version": "v2"
}
] | 2018-07-24 | [
[
"Wu",
"Jimin",
""
],
[
"Li",
"Guangjie",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Liang",
"Shi-Dong",
""
]
] | We consider the Palatini formulation of $f(R,T)$ gravity theory, in which a nonminimal coupling between the Ricci scalar and the trace of the energy-momentum tensor is introduced, by considering the metric and the affine connection as independent field variables. The field equations and the equations of motion for mass... |
2103.03894 | Daria Gangardt | Daria Gangardt, Nathan Steinle, Michael Kesden, Davide Gerosa,
Evangelos Stoikos | A taxonomy of black-hole binary spin precession and nutation | 14 pages, 6 figures, 1 table. Accepted in PRD | Phys. Rev. D 103, 124026 (2021) | 10.1103/PhysRevD.103.124026 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Binary black holes with misaligned spins will generically induce both
precession and nutation of the orbital angular momentum $\bf{L}$ about the
total angular momentum $\bf{J}$. These phenomena modulate the phase and
amplitude of the gravitational waves emitted as the binary inspirals to merger.
We introduce a "taxon... | [
{
"created": "Fri, 5 Mar 2021 19:00:42 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Jun 2021 12:36:31 GMT",
"version": "v2"
}
] | 2021-06-15 | [
[
"Gangardt",
"Daria",
""
],
[
"Steinle",
"Nathan",
""
],
[
"Kesden",
"Michael",
""
],
[
"Gerosa",
"Davide",
""
],
[
"Stoikos",
"Evangelos",
""
]
] | Binary black holes with misaligned spins will generically induce both precession and nutation of the orbital angular momentum $\bf{L}$ about the total angular momentum $\bf{J}$. These phenomena modulate the phase and amplitude of the gravitational waves emitted as the binary inspirals to merger. We introduce a "taxonom... |
gr-qc/9903003 | C. L. B. Correia da Silva | C.Correia da Silva and R.M. Williams | Simplicial minisuperspace models in the presence of a scalar field | 33 pages with 12 figures. To be published in Classical and Quantum
Gravity | Class.Quant.Grav. 16 (1999) 2197-2224 | 10.1088/0264-9381/16/7/304 | null | gr-qc | null | We generalize simplicial minisuperspace models associated with restricting
the topology of the universe to be that of a cone over a closed connected
combinatorial $3-$manifold by considering the presence of a massive scalar
field. By restricting all the interior edge lengths and all the boundary edge
lengths to be eq... | [
{
"created": "Sun, 28 Feb 1999 17:36:49 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"da Silva",
"C. Correia",
""
],
[
"Williams",
"R. M.",
""
]
] | We generalize simplicial minisuperspace models associated with restricting the topology of the universe to be that of a cone over a closed connected combinatorial $3-$manifold by considering the presence of a massive scalar field. By restricting all the interior edge lengths and all the boundary edge lengths to be equi... |
1712.05230 | Tapobrata Sarkar | Pritam Banerjee, Suvankar Paul, Tapobrata Sarkar | Massless fermions in null Fermi coordinates and an application to analog
gravity in $\text{He}^3$-A | 1 + 23 Pages, 1 figure. Minor changes. One reference added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bogoliubov quasiparticles moving in the background of superfluid
$\text{He}^3$-A see an apparently curved space-time metric when the background
superfluid vacuum is in motion. We study how this curvature couples with the
spins of the effectively massless quasiparticles. First, we set up the problem
in null Fermi coor... | [
{
"created": "Thu, 14 Dec 2017 14:06:43 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Dec 2017 13:57:11 GMT",
"version": "v2"
}
] | 2017-12-20 | [
[
"Banerjee",
"Pritam",
""
],
[
"Paul",
"Suvankar",
""
],
[
"Sarkar",
"Tapobrata",
""
]
] | Bogoliubov quasiparticles moving in the background of superfluid $\text{He}^3$-A see an apparently curved space-time metric when the background superfluid vacuum is in motion. We study how this curvature couples with the spins of the effectively massless quasiparticles. First, we set up the problem in null Fermi coordi... |
gr-qc/9806092 | Yasunori Fujii | Yasunori Fujii | What can we do on gravity with antihydrogens? | LaTex, 5 pages, no figures | null | null | NFU-98-12 | gr-qc | null | We discuss the implications of the proposed gravitational redshift experiment
on antihydrogens. We show that the result should be the same as on hydrogens in
spite of different free-fall accelerations (WEP violation) which may occur if
there is a vector fifth-force field. We emphasize the experiment is unique in
the ... | [
{
"created": "Wed, 24 Jun 1998 05:01:48 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Fujii",
"Yasunori",
""
]
] | We discuss the implications of the proposed gravitational redshift experiment on antihydrogens. We show that the result should be the same as on hydrogens in spite of different free-fall accelerations (WEP violation) which may occur if there is a vector fifth-force field. We emphasize the experiment is unique in the se... |
1005.0304 | Chandra Mishra | Chandra Kant Mishra, K. G. Arun, Bala R. Iyer and B. S. Sathyaprakash | Parametrized tests of post-Newtonian theory using Advanced LIGO and
Einstein Telescope | 18 pages, 11 figures, Matches with the published version | Phys.Rev.D82:064010,2010 | 10.1103/PhysRevD.82.064010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativity has very specific predictions for the gravitational
waveforms from inspiralling compact binaries obtained using the post-Newtonian
(PN) approximation. We investigate the extent to which the measurement of the
PN coefficients, possible with the second generation gravitationalwave
detectors such as t... | [
{
"created": "Mon, 3 May 2010 14:12:10 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Sep 2010 08:20:32 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Mishra",
"Chandra Kant",
""
],
[
"Arun",
"K. G.",
""
],
[
"Iyer",
"Bala R.",
""
],
[
"Sathyaprakash",
"B. S.",
""
]
] | General relativity has very specific predictions for the gravitational waveforms from inspiralling compact binaries obtained using the post-Newtonian (PN) approximation. We investigate the extent to which the measurement of the PN coefficients, possible with the second generation gravitationalwave detectors such as the... |
gr-qc/9903034 | Neven Bilic | Neven Bilic (Rudjer Boskovic Institute, Zagreb, Croatia) and Raoul D.
Viollier (University of Cape Town, Rondebosch, South Africa) | General-Relativistic Thomas-Fermi model | 7 pages, LaTex, to appear in Gen. Rel. Grav | Gen.Rel.Grav. 31 (1999) 1105-1113 | 10.1023/A:1026748002175 | null | gr-qc astro-ph | null | A system of self-gravitating massive fermions is studied in the framework of
the general-relativistic Thomas-Fermi model. We study the properties of the
free energy functional and its relation to Einstein's field equations. A
self-gravitating fermion gas we then describe by a set of Thomas-Fermi type
self-consistency... | [
{
"created": "Tue, 9 Mar 1999 13:42:15 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Bilic",
"Neven",
"",
"Rudjer Boskovic Institute, Zagreb, Croatia"
],
[
"Viollier",
"Raoul D.",
"",
"University of Cape Town, Rondebosch, South Africa"
]
] | A system of self-gravitating massive fermions is studied in the framework of the general-relativistic Thomas-Fermi model. We study the properties of the free energy functional and its relation to Einstein's field equations. A self-gravitating fermion gas we then describe by a set of Thomas-Fermi type self-consistency e... |
0910.0434 | Monica Capone Dr | Monica Capone, Matteo Luca Ruggiero | Jumping from Metric f(R) to Scalar-Tensor Theories and the relations
between their post-Newtonian Parameters | 10 pages, 1 table, no figures Accepted for publication in CQG | Class.Quant.Grav.27:125006,2010 | 10.1088/0264-9381/27/12/125006 | null | gr-qc astro-ph.CO astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the dynamical equivalence between $f(R)$ gravity in the metric
formalism and scalar-tensor gravity, and use this equivalence to deduce the
post-Newtonian parameters $\gamma$ and $\beta$ for a $f(R)$ theory, obtaining a
result that is different with respect to that known in the literature. Then, we
obtain ex... | [
{
"created": "Fri, 2 Oct 2009 15:51:47 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Oct 2009 15:08:02 GMT",
"version": "v2"
},
{
"created": "Tue, 15 Dec 2009 13:05:51 GMT",
"version": "v3"
},
{
"created": "Mon, 15 Mar 2010 15:38:18 GMT",
"version": "v4"
},
{
"cre... | 2010-05-07 | [
[
"Capone",
"Monica",
""
],
[
"Ruggiero",
"Matteo Luca",
""
]
] | We review the dynamical equivalence between $f(R)$ gravity in the metric formalism and scalar-tensor gravity, and use this equivalence to deduce the post-Newtonian parameters $\gamma$ and $\beta$ for a $f(R)$ theory, obtaining a result that is different with respect to that known in the literature. Then, we obtain expl... |
1805.11217 | Matthew Carney | Matthew F. Carney, Leslie E. Wade, Burke S. Irwin | Comparing two models for measuring the neutron star equation of state
from gravitational-wave signals | null | Phys. Rev. D 98, 063004 (2018) | 10.1103/PhysRevD.98.063004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Observations of gravitational-wave signals from binary neutron-star mergers,
like GW170817, can be used to constrain the neutron-star equation of state
(EoS). One method involves modeling the EoS and measuring the model parameters
through Bayesian inference. A previous study has demonstrated the effectiveness
of usin... | [
{
"created": "Tue, 29 May 2018 02:11:28 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Jan 2019 18:50:39 GMT",
"version": "v2"
}
] | 2019-01-09 | [
[
"Carney",
"Matthew F.",
""
],
[
"Wade",
"Leslie E.",
""
],
[
"Irwin",
"Burke S.",
""
]
] | Observations of gravitational-wave signals from binary neutron-star mergers, like GW170817, can be used to constrain the neutron-star equation of state (EoS). One method involves modeling the EoS and measuring the model parameters through Bayesian inference. A previous study has demonstrated the effectiveness of using ... |
0901.1441 | Jing Wang | Jing Wang, Tian Lan, Tong-Jie Zhang | Cosmic Duality and Statefinder Diagnosis of Spinor Quintom | 9 pages, 9 figures, J.Theor. Phys. 1, 62-75 | J.Theor. Phys. 1 (2012) 62-75 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the possible connections among different Spinor
Quintom Dark Energy (DE) models by the aid of duality. Then we apply the
statefinder diagnostic to these models. By this diagnostic pair {$\{r,s\}$}, we
differentiate one Quintom DE model from the others in a model independent
manner. A class of ... | [
{
"created": "Sun, 11 Jan 2009 14:01:23 GMT",
"version": "v1"
},
{
"created": "Thu, 31 May 2012 03:02:15 GMT",
"version": "v2"
},
{
"created": "Sun, 2 Sep 2012 04:30:28 GMT",
"version": "v3"
}
] | 2013-10-07 | [
[
"Wang",
"Jing",
""
],
[
"Lan",
"Tian",
""
],
[
"Zhang",
"Tong-Jie",
""
]
] | In this paper, we study the possible connections among different Spinor Quintom Dark Energy (DE) models by the aid of duality. Then we apply the statefinder diagnostic to these models. By this diagnostic pair {$\{r,s\}$}, we differentiate one Quintom DE model from the others in a model independent manner. A class of ev... |
2210.01724 | Jun Zhang | Huan Yang, Jun Zhang | Spectral stability of near-extremal spacetimes | 9 pages, 5 figures, title changed, discussion and references added | Phys. Rev. D 107, 064045 (2023) | 10.1103/PhysRevD.107.064045 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has been suggested that the spectrum of quasinormal modes of rotating
black holes is unstable against additional potential terms in the perturbation
equation, as the operator associated with the equation is non-self-adjoint. We
point out that a bi-linear form has been constructed previously to allow a
perturbation... | [
{
"created": "Tue, 4 Oct 2022 16:29:26 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Mar 2023 14:57:03 GMT",
"version": "v2"
}
] | 2023-04-05 | [
[
"Yang",
"Huan",
""
],
[
"Zhang",
"Jun",
""
]
] | It has been suggested that the spectrum of quasinormal modes of rotating black holes is unstable against additional potential terms in the perturbation equation, as the operator associated with the equation is non-self-adjoint. We point out that a bi-linear form has been constructed previously to allow a perturbation a... |
2009.03252 | Bivudutta Mishra Dr. | B.Mishra, S.K.Tripathy, Saibal Ray | Cosmological models with squared trace in modified gravity | 17 pages, 10 figures. Accepted version IJMPD | IJMPD, 29, 2050100 (2020) | 10.1142/S021827182050100X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we present a few simple cosmological models under the modified
theory of gravity in the particular form of
$f(R,\mathcal{T})=R+2f(\mathcal{T})$, where $R$ is the Ricci Scalar and
$\mathcal{T}$ is the trace of the energy-momentum tensor. Two special
cosmological models are studied with (i) hyperbolic scal... | [
{
"created": "Wed, 2 Sep 2020 10:36:28 GMT",
"version": "v1"
}
] | 2021-06-14 | [
[
"Mishra",
"B.",
""
],
[
"Tripathy",
"S. K.",
""
],
[
"Ray",
"Saibal",
""
]
] | In this work we present a few simple cosmological models under the modified theory of gravity in the particular form of $f(R,\mathcal{T})=R+2f(\mathcal{T})$, where $R$ is the Ricci Scalar and $\mathcal{T}$ is the trace of the energy-momentum tensor. Two special cosmological models are studied with (i) hyperbolic scale ... |
1012.4662 | Laszlo B. Szabados | R\'eka Farkas and L\'aszl\'o B Szabados | On quasi-local charges and Newman--Penrose type quantities in
Yang--Mills theories | 22 pages, typos corrected, appearing in Classical and Quantum Gravity | Classical and Quantum Gravity, vol 24, 145013 (2011) | 10.1088/0264-9381/28/14/145013 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalize the notion of quasi-local charges, introduced by P. Tod for
Yang--Mills fields with unitary groups, to non-Abelian gauge theories with
arbitrary gauge group, and calculate its small sphere and large sphere limits
both at spatial and null infinity. We show that for semisimple gauge groups no
reasonable d... | [
{
"created": "Tue, 21 Dec 2010 14:15:03 GMT",
"version": "v1"
},
{
"created": "Mon, 30 May 2011 14:28:14 GMT",
"version": "v2"
}
] | 2015-05-20 | [
[
"Farkas",
"Réka",
""
],
[
"Szabados",
"László B",
""
]
] | We generalize the notion of quasi-local charges, introduced by P. Tod for Yang--Mills fields with unitary groups, to non-Abelian gauge theories with arbitrary gauge group, and calculate its small sphere and large sphere limits both at spatial and null infinity. We show that for semisimple gauge groups no reasonable def... |
1605.02080 | Aindri\'u Conroy Mr. | Aindri\'u Conroy, Alexey S. Koshelev and Anupam Mazumdar | Defocusing of Null Rays in Infinite Derivative Gravity | 8 pages plus references | null | 10.1088/1475-7516/2017/01/017 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Einstein's General theory of relativity permits spacetime singularities,
where null geodesic congruences focus in the presence of matter, which
satisfies an appropriate energy condition. In this paper, we provide a minimal
defocusing condition for null congruences without assuming any Ansatz-dependent
background solu... | [
{
"created": "Fri, 6 May 2016 20:00:37 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Dec 2016 09:11:04 GMT",
"version": "v2"
}
] | 2017-01-18 | [
[
"Conroy",
"Aindriú",
""
],
[
"Koshelev",
"Alexey S.",
""
],
[
"Mazumdar",
"Anupam",
""
]
] | Einstein's General theory of relativity permits spacetime singularities, where null geodesic congruences focus in the presence of matter, which satisfies an appropriate energy condition. In this paper, we provide a minimal defocusing condition for null congruences without assuming any Ansatz-dependent background soluti... |
0809.1919 | Gilberto Medeiros Kremer | Luis P. Chimento, M\'onica Forte, Gilberto M. Kremer and Marlos O.
Ribas | Tachyonization of the $\La$CDM cosmological model | Version accepted for publication in GRG | Gen.Rel.Grav.42:1523-1535,2010 | 10.1007/s10714-009-0924-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work a tachyonization of the $\Lambda$CDM model for a spatially flat
Friedmann-Robertson-Walker space-time is proposed. A tachyon field and a
cosmological constant are considered as the sources of the gravitational field.
Starting from a stability analysis and from the exact solutions for a standard
tachyon f... | [
{
"created": "Thu, 11 Sep 2008 06:40:22 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Dec 2009 12:46:36 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"Chimento",
"Luis P.",
""
],
[
"Forte",
"Mónica",
""
],
[
"Kremer",
"Gilberto M.",
""
],
[
"Ribas",
"Marlos O.",
""
]
] | In this work a tachyonization of the $\Lambda$CDM model for a spatially flat Friedmann-Robertson-Walker space-time is proposed. A tachyon field and a cosmological constant are considered as the sources of the gravitational field. Starting from a stability analysis and from the exact solutions for a standard tachyon fie... |
1907.13065 | Albert Escriv\`a | Albert Escriv\`a | Simulation of primordial black hole formation using pseudo-spectral
methods | v3: 13 pages and 13 figures. Clarifications added and plots improved.
Accepted for publication in Physics of the Dark Universe | Phys.Dark Univ. 27 (2020) 100466 | 10.1016/j.dark.2020.100466 | ICCUB-19-012 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we have used for the first time pseudo-spectral methods to
perform numerical simulations of spherically symmetric black hole formations on
a Friedman-Robertson-Walker universe. With these methods, the differential
equations describing the gravitational collapse are partially solved
algebraically. With ou... | [
{
"created": "Tue, 30 Jul 2019 16:47:26 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Sep 2019 16:20:51 GMT",
"version": "v2"
},
{
"created": "Wed, 8 Jan 2020 18:17:27 GMT",
"version": "v3"
}
] | 2020-07-07 | [
[
"Escrivà",
"Albert",
""
]
] | In this work we have used for the first time pseudo-spectral methods to perform numerical simulations of spherically symmetric black hole formations on a Friedman-Robertson-Walker universe. With these methods, the differential equations describing the gravitational collapse are partially solved algebraically. With our ... |
gr-qc/0607048 | Alexander Zhidenko | P. Kanti, R. A. Konoplya, A. Zhidenko | Quasi-Normal Modes of Brane-Localised Standard Model Fields II: Kerr
Black Holes | 12 pages, 8 figures, typos corrected, version to appear in Phys. Rev.
D | Phys.Rev. D74 (2006) 064008 | 10.1103/PhysRevD.74.064008 | null | gr-qc hep-th | null | This paper presents a comprehensive study of the fundamental quasinormal
modes of all Standard Model fields propagating on a brane embedded in a
higher-dimensional rotating black hole spacetime. The equations of motion for
fields with spin $s=0, 1/2$ and 1 propagating in the induced-on-the-brane
background are solved... | [
{
"created": "Tue, 11 Jul 2006 20:50:14 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Aug 2006 13:28:39 GMT",
"version": "v2"
},
{
"created": "Fri, 1 Sep 2006 15:51:02 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Kanti",
"P.",
""
],
[
"Konoplya",
"R. A.",
""
],
[
"Zhidenko",
"A.",
""
]
] | This paper presents a comprehensive study of the fundamental quasinormal modes of all Standard Model fields propagating on a brane embedded in a higher-dimensional rotating black hole spacetime. The equations of motion for fields with spin $s=0, 1/2$ and 1 propagating in the induced-on-the-brane background are solved n... |
gr-qc/0612026 | Emre Kahya Mr. | E. O. Kahya and V. K. Onemli | Quantum Stability of a w < - 1 Phase of Cosmic Acceleration | 23 pages | Phys.Rev.D76:043512,2007 | 10.1103/PhysRevD.76.043512 | CRETE-06-20, UFIFT-QG-06-19 | gr-qc astro-ph hep-ph hep-th | null | We consider a massless, minimally coupled scalar with a quartic
self-interaction which is released in Bunch-Davies vacuum in locally de Sitter
background of an inflating universe. It was shown, in this system, that quantum
effects can induce a temporary phase of super-acceleration causing a violation
of the Weak Ener... | [
{
"created": "Mon, 4 Dec 2006 14:44:14 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Jan 2007 20:19:59 GMT",
"version": "v2"
},
{
"created": "Wed, 15 Aug 2007 21:28:56 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Kahya",
"E. O.",
""
],
[
"Onemli",
"V. K.",
""
]
] | We consider a massless, minimally coupled scalar with a quartic self-interaction which is released in Bunch-Davies vacuum in locally de Sitter background of an inflating universe. It was shown, in this system, that quantum effects can induce a temporary phase of super-acceleration causing a violation of the Weak Energy... |
2311.02515 | Sergey Paston | S.A. Paston | Dark matter as a gravitational effect in the embedding theory approach | LaTeX, 16 pages, based on a talk given at the VII International
Conference "Models of quantum field theory" (MQFT-2022) dedicated to the 82th
anniversary of Professor Alexandr Nikolaevich Vasiliev and to the 80th
anniversary of Professor Vladimir Dmitrievich Lyakhovski, Saint Petersburg,
Russia, 10-14 October 2... | Theoretical and mathematical physics 216:3 (2023) 1382 | 10.1134/S004057792309012X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the possibility of explaining observations usually related to the
existence of dark matter by passing from the general relativity (GR) theory to
a modified theory of gravity, the embedding theory proposed by Regge and
Teitelboim. In this approach, it is assumed that our space-time is a
four-dimensional sur... | [
{
"created": "Sat, 4 Nov 2023 21:20:23 GMT",
"version": "v1"
}
] | 2023-11-07 | [
[
"Paston",
"S. A.",
""
]
] | We discuss the possibility of explaining observations usually related to the existence of dark matter by passing from the general relativity (GR) theory to a modified theory of gravity, the embedding theory proposed by Regge and Teitelboim. In this approach, it is assumed that our space-time is a four-dimensional surfa... |
2110.06873 | Justin Janquart | Justin Janquart, Eungwang Seo, Otto A. Hannuksela, Tjonnie G. F. Li,
Chris Van Den Broeck | On the identification of individual gravitational wave image types of a
lensed system using higher-order modes | 6 pages, 2 figures | ApJL 923 L1 (2021) | 10.3847/2041-8213/ac3bcf | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Similarly to light, gravitational waves can be gravitationally lensed as they
propagate near massive astrophysical objects such as galaxies, stars, or black
holes. In recent years, forecasts have suggested a reasonable chance of strong
gravitational-wave lensing detections with the LIGO-Virgo-KAGRA detector
network a... | [
{
"created": "Wed, 13 Oct 2021 17:07:55 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Dec 2021 15:04:53 GMT",
"version": "v2"
}
] | 2021-12-09 | [
[
"Janquart",
"Justin",
""
],
[
"Seo",
"Eungwang",
""
],
[
"Hannuksela",
"Otto A.",
""
],
[
"Li",
"Tjonnie G. F.",
""
],
[
"Broeck",
"Chris Van Den",
""
]
] | Similarly to light, gravitational waves can be gravitationally lensed as they propagate near massive astrophysical objects such as galaxies, stars, or black holes. In recent years, forecasts have suggested a reasonable chance of strong gravitational-wave lensing detections with the LIGO-Virgo-KAGRA detector network at ... |
2201.02259 | Vasilisa Nikiforova | Vasilisa Nikiforova | Perturbations of a Schwarzschild black hole in torsion bigravity | null | null | 10.1103/PhysRevD.105.064060 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we pursue the study of linear perturbations around a
Schwarzschild black hole in a generalized Einstein-Cartan theory of gravity,
called torsion bigravity. This theory contains both massless and massive spin-2
excitations. Here we consider non spherically-symmetric perturbations with
generic multipolari... | [
{
"created": "Thu, 6 Jan 2022 21:53:56 GMT",
"version": "v1"
}
] | 2022-04-13 | [
[
"Nikiforova",
"Vasilisa",
""
]
] | In this paper we pursue the study of linear perturbations around a Schwarzschild black hole in a generalized Einstein-Cartan theory of gravity, called torsion bigravity. This theory contains both massless and massive spin-2 excitations. Here we consider non spherically-symmetric perturbations with generic multipolarity... |
gr-qc/9507014 | null | Giampiero Esposito, Gabriele Gionti, Alexander Yu. Kamenshchik, Igor
V. Mishakov, Giuseppe Pollifrone | Spin-3/2 Potentials in Backgrounds with Boundary | 23 pages, plain-tex | Int.J.Mod.Phys. D4 (1995) 735-747 | 10.1142/S0218271895000491 | DSF 95/20 | gr-qc | null | This paper studies the two-spinor form of the Rarita-Schwinger potentials
subject to local boundary conditions compatible with local supersymmetry. The
massless Rarita-Schwinger field equations are studied in four-real-dimensional
Riemannian backgrounds with boundary. Gauge transformations on the potentials
are shown... | [
{
"created": "Thu, 6 Jul 1995 15:34:02 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Esposito",
"Giampiero",
""
],
[
"Gionti",
"Gabriele",
""
],
[
"Kamenshchik",
"Alexander Yu.",
""
],
[
"Mishakov",
"Igor V.",
""
],
[
"Pollifrone",
"Giuseppe",
""
]
] | This paper studies the two-spinor form of the Rarita-Schwinger potentials subject to local boundary conditions compatible with local supersymmetry. The massless Rarita-Schwinger field equations are studied in four-real-dimensional Riemannian backgrounds with boundary. Gauge transformations on the potentials are shown t... |
gr-qc/0212013 | Remo Garattini | Remo Garattini | Spacetime Foam and Vacuum Energy | LaTeX2e file, 5 pages. Talk given at the Spanish Relativity Meeting
(ERE 2002), Mao, Menorca, Spain, 22-24 September 2002 | null | null | null | gr-qc hep-th | null | A simple model of spacetime foam, made by spherically symmetric wormholes,
with or without a cosmological term is proposed. The black hole area
quantization and its consequences are examined in this context. We open the
possibility of probing Lorentz symmetry in this picture.
| [
{
"created": "Tue, 3 Dec 2002 10:44:20 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Garattini",
"Remo",
""
]
] | A simple model of spacetime foam, made by spherically symmetric wormholes, with or without a cosmological term is proposed. The black hole area quantization and its consequences are examined in this context. We open the possibility of probing Lorentz symmetry in this picture. |
1810.05108 | Betti Hartmann | Yves Brihaye and Betti Hartmann | Charged scalar-tensor solitons and black holes with (approximate)
Anti-de Sitter asymptotics | v2: minor changes in figure captions; clarifications added; reference
added; matches version accepted for publication in JHEP | null | 10.1007/JHEP01(2019)142 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss charged and static solutions in a shift-symmetric scalar-tensor
gravity model including a negative cosmological constant. The solutions are
only approximately Anti-de Sitter (AdS) asymptotically. While spherically
symmetric black holes with scalar-tensor hair do exist in our model, the
uncharged sphericall... | [
{
"created": "Thu, 11 Oct 2018 16:26:25 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Jan 2019 13:59:59 GMT",
"version": "v2"
}
] | 2019-02-20 | [
[
"Brihaye",
"Yves",
""
],
[
"Hartmann",
"Betti",
""
]
] | We discuss charged and static solutions in a shift-symmetric scalar-tensor gravity model including a negative cosmological constant. The solutions are only approximately Anti-de Sitter (AdS) asymptotically. While spherically symmetric black holes with scalar-tensor hair do exist in our model, the uncharged spherically ... |
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