id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2012.11074 | Rika Yamada | Rika Yamada, Yutaro Enomoto, Izumi Watanabe, Koji Nagano, Yuta
Michimura, Atsushi Nishizawa, Kentaro Komori, Takeo Naito, Taigen Morimoto,
Shoki Iwaguchi, Tomohiro Ishikawa, Masaki Ando, Akira Furusawa, Seiji
Kawamura | Reduction of quantum noise using the quantum locking with an optical
spring for gravitational wave detectors | 15 pages, 10 figures | null | 10.1016/j.physleta.2021.127365 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In our previous research, simulation showed that a quantum locking scheme
with homodyne detection in sub-cavities is effective in surpassing the quantum
noise limit for Deci-hertz Interferometer Gravitational Wave Observatory
(DECIGO) in a limited frequency range. This time we have simulated an optical
spring effect ... | [
{
"created": "Mon, 21 Dec 2020 01:39:55 GMT",
"version": "v1"
}
] | 2021-05-05 | [
[
"Yamada",
"Rika",
""
],
[
"Enomoto",
"Yutaro",
""
],
[
"Watanabe",
"Izumi",
""
],
[
"Nagano",
"Koji",
""
],
[
"Michimura",
"Yuta",
""
],
[
"Nishizawa",
"Atsushi",
""
],
[
"Komori",
"Kentaro",
""
],
[
... | In our previous research, simulation showed that a quantum locking scheme with homodyne detection in sub-cavities is effective in surpassing the quantum noise limit for Deci-hertz Interferometer Gravitational Wave Observatory (DECIGO) in a limited frequency range. This time we have simulated an optical spring effect in... |
2008.09314 | Qingdi Wang | Qingdi Wang and William G. Unruh | Comment on "Hiding the Cosmological Constant" | 1 page | Physical Review Letters 125, 089001 (2020) | 10.1103/PhysRevLett.125.089001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We comment on S. Carlip's recent Letter "Hiding the Cosmological Constant"
[Phys. Rev. Lett. 123, 131302].
| [
{
"created": "Fri, 21 Aug 2020 05:25:20 GMT",
"version": "v1"
}
] | 2020-08-24 | [
[
"Wang",
"Qingdi",
""
],
[
"Unruh",
"William G.",
""
]
] | We comment on S. Carlip's recent Letter "Hiding the Cosmological Constant" [Phys. Rev. Lett. 123, 131302]. |
1408.6901 | Juhua Chen | Qihong Huang, Juhua Chen, Yongjiu Wang | Spinning Particle in Gravitational Field of Black Hole Involving Global
Monopole | 13 Pages, 6 Figures. Appears in Int J Theor Phys. 2014 | null | 10.1007/s10773-014-2240-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the dynamics of trajectory of a spinning particle in a
Schwarzschild spacetime involving a global monopole. We set up the equations of
motion and find three types of trajectories. We study the conditions that a
spinning particle, originally moving in the innermost stable circular orbit
around t... | [
{
"created": "Fri, 29 Aug 2014 02:00:26 GMT",
"version": "v1"
}
] | 2014-09-01 | [
[
"Huang",
"Qihong",
""
],
[
"Chen",
"Juhua",
""
],
[
"Wang",
"Yongjiu",
""
]
] | In this paper we study the dynamics of trajectory of a spinning particle in a Schwarzschild spacetime involving a global monopole. We set up the equations of motion and find three types of trajectories. We study the conditions that a spinning particle, originally moving in the innermost stable circular orbit around the... |
0803.4106 | Jiri Bicak | Jiri Bicak, Joseph Katz and Donald Lynden-Bell | Cosmological perturbation theory, instantaneous gauges and local
inertial frames | 68 pages, 2 figures | Phys.Rev.D76:063501,2007 | 10.1103/PhysRevD.76.063501 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Linear perturbations of Friedmann-Robertson-Walker universes with any
curvature and cosmological constant are studied in a general gauge without
decomposition into harmonics. Desirable gauges are selected as those which
embody best Mach's principle: in these gauges local inertial frames can be
determined instantaneou... | [
{
"created": "Fri, 28 Mar 2008 13:02:10 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Bicak",
"Jiri",
""
],
[
"Katz",
"Joseph",
""
],
[
"Lynden-Bell",
"Donald",
""
]
] | Linear perturbations of Friedmann-Robertson-Walker universes with any curvature and cosmological constant are studied in a general gauge without decomposition into harmonics. Desirable gauges are selected as those which embody best Mach's principle: in these gauges local inertial frames can be determined instantaneousl... |
1506.00567 | Adriano Oliveira Mesquita | A. M. Oliveira, H. E. S. Velten, J. C. Fabris, and L. Casarini | Neutron Stars in Rastall Gravity | Pages: 6; Figures: 4 | Phys. Rev. D 92, 044020 (2015) | 10.1103/PhysRevD.92.044020 | null | gr-qc astro-ph.CO astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate static and spherically symmetric solutions for the Rastall
modification of gravity to describe Neutron Stars (NS). The key feature of the
Rastall gravity is the non-conservation of the energy-momentum tensor
proportionally to the space-time curvature. Using realistic equations of state
for the NS interio... | [
{
"created": "Mon, 1 Jun 2015 16:56:00 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jun 2015 20:09:27 GMT",
"version": "v2"
},
{
"created": "Fri, 7 Oct 2016 23:00:45 GMT",
"version": "v3"
},
{
"created": "Fri, 21 Oct 2016 15:39:23 GMT",
"version": "v4"
}
] | 2016-10-24 | [
[
"Oliveira",
"A. M.",
""
],
[
"Velten",
"H. E. S.",
""
],
[
"Fabris",
"J. C.",
""
],
[
"Casarini",
"L.",
""
]
] | We calculate static and spherically symmetric solutions for the Rastall modification of gravity to describe Neutron Stars (NS). The key feature of the Rastall gravity is the non-conservation of the energy-momentum tensor proportionally to the space-time curvature. Using realistic equations of state for the NS interior ... |
gr-qc/0610101 | Stefan Zohren | J. Ambjorn, R. Janik, W. Westra, S. Zohren | The emergence of AdS(2) from quantum fluctuations | 4 pages. Talk given by W. Westra at the Eleventh Marcel Grossmann
Meeting on General Relativity at the Freie U. Berlin, July 23 - 29, 2006 | Proceedings of the Eleventh Marcel Grossmann Meeting on General
Relativity, (ed.) H. Kleinert, R.T. Jantzen and R. Ruffini, World Scientific,
(2008), p. 2779. | 10.1103/PhysRevD.75.083005 | null | gr-qc | null | We have shown how the quantization of two-dimensional quantum gravity with an
action which contains only a positive cosmological constant and boundary
cosmological constants leads to the emergence of a spacetime which can be
described as a constant negative curvature spacetime with superimposed quantum
fluctuations.
| [
{
"created": "Fri, 20 Oct 2006 12:18:57 GMT",
"version": "v1"
}
] | 2013-05-29 | [
[
"Ambjorn",
"J.",
""
],
[
"Janik",
"R.",
""
],
[
"Westra",
"W.",
""
],
[
"Zohren",
"S.",
""
]
] | We have shown how the quantization of two-dimensional quantum gravity with an action which contains only a positive cosmological constant and boundary cosmological constants leads to the emergence of a spacetime which can be described as a constant negative curvature spacetime with superimposed quantum fluctuations. |
gr-qc/0204001 | Kirill Bronnikov | Kirill A. Bronnikov (VNIIMS, Moscow; PFUR, Moscow) | Scalar-tensor gravity and conformal continuations | Latex2e, 13 pages, 3 bezier figures | J.Math.Phys.43:6096-6115,2002 | 10.1063/1.1519667 | null | gr-qc | null | Global properties of vacuum static, spherically symmetric configurations are
studied in a general class of scalar-tensor theories (STT) of gravity in
various dimensions. The conformal mapping between the Jordan and Einstein
frames is used as a tool. Necessary and sufficient conditions are found for the
existence of s... | [
{
"created": "Sat, 30 Mar 2002 09:53:51 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Bronnikov",
"Kirill A.",
"",
"VNIIMS, Moscow; PFUR, Moscow"
]
] | Global properties of vacuum static, spherically symmetric configurations are studied in a general class of scalar-tensor theories (STT) of gravity in various dimensions. The conformal mapping between the Jordan and Einstein frames is used as a tool. Necessary and sufficient conditions are found for the existence of sol... |
gr-qc/0510111 | Luis Lehner | Luis Lehner, Steven L. Liebling and Oscar Reula | AMR, stability and higher accuracy | null | Class.Quant.Grav. 23 (2006) S421-S446 | 10.1088/0264-9381/23/16/S08 | null | gr-qc | null | Efforts to achieve better accuracy in numerical relativity have so far
focused either on implementing second order accurate adaptive mesh refinement
or on defining higher order accurate differences and update schemes. Here, we
argue for the combination, that is a higher order accurate adaptive scheme.
This combines t... | [
{
"created": "Tue, 25 Oct 2005 20:39:54 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Lehner",
"Luis",
""
],
[
"Liebling",
"Steven L.",
""
],
[
"Reula",
"Oscar",
""
]
] | Efforts to achieve better accuracy in numerical relativity have so far focused either on implementing second order accurate adaptive mesh refinement or on defining higher order accurate differences and update schemes. Here, we argue for the combination, that is a higher order accurate adaptive scheme. This combines the... |
1407.6532 | Ra\'ul Carballo-Rubio | Carlos Barcel\'o, Ra\'ul Carballo-Rubio, Luis J. Garay, Gil Jannes | Electromagnetism as an emergent phenomenon: a step-by-step guide | 41 pages, 4 figures; v2: references added, version accepted for
publication | New J. Phys. 16 (2014) 123028 | 10.1088/1367-2630/16/12/123028 | null | gr-qc cond-mat.other hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a detailed description of electrodynamics as an emergent theory from
condensed-matter-like structures, not only {\it per se} but also as a warm-up
for the study of the much more complex case of gravity. We will concentrate on
two scenarios that, although qualitatively different, share some important
features,... | [
{
"created": "Thu, 24 Jul 2014 11:26:54 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Dec 2014 11:48:46 GMT",
"version": "v2"
}
] | 2014-12-12 | [
[
"Barceló",
"Carlos",
""
],
[
"Carballo-Rubio",
"Raúl",
""
],
[
"Garay",
"Luis J.",
""
],
[
"Jannes",
"Gil",
""
]
] | We give a detailed description of electrodynamics as an emergent theory from condensed-matter-like structures, not only {\it per se} but also as a warm-up for the study of the much more complex case of gravity. We will concentrate on two scenarios that, although qualitatively different, share some important features, w... |
1908.09218 | Vasilis Oikonomou | V.K. Oikonomou, N.Th. Chatzarakis | Canonical Scalar Field Inflation with a Woods-Saxon Potential | null | null | 10.1016/j.aop.2019.167999 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper focuses on the realization of an inflationary model from a
canonical scalar field theory with a Woods-Saxon potential, in the slow-roll
approximation. Our analysis indicates that the observable quantities derived
theoretically from our model, namely the spectral index of the primordial
scalar curvature per... | [
{
"created": "Sat, 24 Aug 2019 21:59:28 GMT",
"version": "v1"
}
] | 2020-01-08 | [
[
"Oikonomou",
"V. K.",
""
],
[
"Chatzarakis",
"N. Th.",
""
]
] | This paper focuses on the realization of an inflationary model from a canonical scalar field theory with a Woods-Saxon potential, in the slow-roll approximation. Our analysis indicates that the observable quantities derived theoretically from our model, namely the spectral index of the primordial scalar curvature pertu... |
gr-qc/9511042 | Jorge Pullin | Rodolfo Gambini, Jorge Pullin | A rigorous solution of the quantum Einstein equations | 4 pages, Revtex, four figures included with epsf | Phys.Rev.D54:5935-5938,1996 | 10.1103/PhysRevD.54.5935 | CGPG-95/11-2 | gr-qc hep-lat hep-th math.QA q-alg | null | We show that the second coefficient of the Conway knot polynomial is
annihilated by the Hamiltonian constraint of canonically quantized general
relativity in the loop representation. The calculations are carried out in a
fully regularized lattice framework. Crucial to the calculation is the explicit
form of the skein... | [
{
"created": "Tue, 14 Nov 1995 15:11:25 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Gambini",
"Rodolfo",
""
],
[
"Pullin",
"Jorge",
""
]
] | We show that the second coefficient of the Conway knot polynomial is annihilated by the Hamiltonian constraint of canonically quantized general relativity in the loop representation. The calculations are carried out in a fully regularized lattice framework. Crucial to the calculation is the explicit form of the skein r... |
2012.13742 | Lau Loi So | Lau Loi So | General relativistic tidal heating for the M$\o$ller 58 pseudotensor | 10 pages, a major revision of arXiv:1712.08043 | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In his study of tidal stabilization of fully relativistic neutron stars
Thorne showed that the fully relativistic expression for tidal heating is the
same as in non-relativistic Newtonian theory. Furthermore, Thorne also noted
that this tidal heating must be independent of how one localizes gravitational
energy and i... | [
{
"created": "Sat, 26 Dec 2020 14:20:35 GMT",
"version": "v1"
}
] | 2020-12-29 | [
[
"So",
"Lau Loi",
""
]
] | In his study of tidal stabilization of fully relativistic neutron stars Thorne showed that the fully relativistic expression for tidal heating is the same as in non-relativistic Newtonian theory. Furthermore, Thorne also noted that this tidal heating must be independent of how one localizes gravitational energy and is ... |
1011.5826 | Jiri Podolsky | Jiri Podolsky, Jerry B. Griffiths | Cylindrically and toroidally symmetric solutions with a cosmological
constant | 4 pages, 2 figures. To appear in the Proceedings of The Spanish
Relativity Meeting (ERE2010), Journal of Physics: Conference Series | J.Phys.Conf.Ser.314:012100,2011 | 10.1088/1742-6596/314/1/012100 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cylindrical-like coordinates for constant-curvature 3-spaces are introduced
and discussed. This helps to clarify the geometrical properties, the coordinate
ranges and the meaning of free parameters in the static vacuum solution of
Linet and Tian. In particular, when the cosmological constant is positive, the
spacetim... | [
{
"created": "Fri, 26 Nov 2010 15:48:49 GMT",
"version": "v1"
}
] | 2011-09-28 | [
[
"Podolsky",
"Jiri",
""
],
[
"Griffiths",
"Jerry B.",
""
]
] | Cylindrical-like coordinates for constant-curvature 3-spaces are introduced and discussed. This helps to clarify the geometrical properties, the coordinate ranges and the meaning of free parameters in the static vacuum solution of Linet and Tian. In particular, when the cosmological constant is positive, the spacetimes... |
1010.1477 | Alma Rosa M\'endez Rodr\'iguez | A. R. Mendez and A. L. Garcia-Perciante | Relativistic heat conduction: the kinetic theory approach and comparison
with Marle's model | 8 pages, one figure. To appear in the AIP conference proceedings of
the IV Mexican Meeting on Mathematical and Experimental Physics, Mexico,
D.F., 19th to 23th July | AIP Conf.Proc.1312:63-72,2010 | 10.1063/1.3533208 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In order to close the set of relativistic hydrodynamic equations,
constitutive relations for the dissipative fluxes are required. In this work we
outline the calculation of the corresponding closure for the heat flux in terms
of the gradients of the independent scalar state variables: number density and
temperature. ... | [
{
"created": "Thu, 7 Oct 2010 16:33:36 GMT",
"version": "v1"
}
] | 2011-01-17 | [
[
"Mendez",
"A. R.",
""
],
[
"Garcia-Perciante",
"A. L.",
""
]
] | In order to close the set of relativistic hydrodynamic equations, constitutive relations for the dissipative fluxes are required. In this work we outline the calculation of the corresponding closure for the heat flux in terms of the gradients of the independent scalar state variables: number density and temperature. Th... |
0910.4178 | Anna Sakovich | Anna Sakovich | Constant mean curvature solutions of the Einstein-scalar field
constraint equations on asymptotically hyperbolic manifolds | 15 pages | Class.Quant.Grav.27:245019,2010 | 10.1088/0264-9381/27/24/245019 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We follow the approach employed by Y. Choquet-Bruhat, J. Isenberg and D.
Pollack in the case of closed manifolds and establish existence and
non-existence results for the Einstein-scalar field constraint equations on
asymptotically hyperbolic manifolds.
| [
{
"created": "Wed, 21 Oct 2009 21:13:28 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Jun 2010 11:42:40 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Mar 2011 14:08:40 GMT",
"version": "v3"
}
] | 2011-04-07 | [
[
"Sakovich",
"Anna",
""
]
] | We follow the approach employed by Y. Choquet-Bruhat, J. Isenberg and D. Pollack in the case of closed manifolds and establish existence and non-existence results for the Einstein-scalar field constraint equations on asymptotically hyperbolic manifolds. |
1609.01639 | Luciano Gabbanelli | Jorge Alfaro, Dom\`enec Espriu and Luciano Gabbanelli | Bose-Einstein graviton condensate in a Schwarzschild black hole | 18 pages, 1 figure | Class. Quantum Grav. 35 (2018) 015001 | 10.1088/1361-6382/aa9771 | ICCUB-16-032 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze in detail a previous proposal by Dvali and G\'omez that black
holes could be treated as consisting of a Bose-Einstein condensate of
gravitons. In order to do so we extend the Einstein-Hilbert action with a
chemical potential-like term, thus placing ourselves in a grand-canonical
ensemble. The form and char... | [
{
"created": "Tue, 6 Sep 2016 16:25:13 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Jul 2017 16:21:10 GMT",
"version": "v2"
},
{
"created": "Thu, 2 Nov 2017 08:51:16 GMT",
"version": "v3"
}
] | 2017-12-22 | [
[
"Alfaro",
"Jorge",
""
],
[
"Espriu",
"Domènec",
""
],
[
"Gabbanelli",
"Luciano",
""
]
] | We analyze in detail a previous proposal by Dvali and G\'omez that black holes could be treated as consisting of a Bose-Einstein condensate of gravitons. In order to do so we extend the Einstein-Hilbert action with a chemical potential-like term, thus placing ourselves in a grand-canonical ensemble. The form and charac... |
1109.3784 | Astrid Eichhorn | Astrid Eichhorn | Observable consequences of quantum gravity: Can light fermions exist? | 4 pages, based on a talk given at Loops '11, Madrid, to appear in
Journal of Physics: Conference Series (JPCS) | null | 10.1088/1742-6596/360/1/012057 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Any theory of quantum gravity must ultimately be connected to observations.
This demand is difficult to be met due to the high energies at which we expect
the quantum nature of gravity to become manifest. Here we study, how viable
quantum gravity proposals can be restricted by investigating the interplay of
gravitati... | [
{
"created": "Sat, 17 Sep 2011 14:42:19 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Eichhorn",
"Astrid",
""
]
] | Any theory of quantum gravity must ultimately be connected to observations. This demand is difficult to be met due to the high energies at which we expect the quantum nature of gravity to become manifest. Here we study, how viable quantum gravity proposals can be restricted by investigating the interplay of gravitation... |
1210.0483 | Tim Johannsen | Tim Johannsen (Waterloo, Perimeter, Arizona) | A Metric for Testing the Nature of Black Holes | 5 pages, 2 figures, accepted to the proceedings of IC-MSQUARE 2012,
Budapest, September 3-7, 2012 | null | 10.1088/1742-6596/410/1/012136 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general relativity, astrophysical black holes are uniquely described by
the Kerr metric. Observational tests of the Kerr nature of these compact
objects and, hence, of general relativity, require a metric that encompasses a
broader class of black holes as possible alternatives to the usual Kerr black
holes. Severa... | [
{
"created": "Mon, 1 Oct 2012 17:56:12 GMT",
"version": "v1"
}
] | 2015-06-11 | [
[
"Johannsen",
"Tim",
"",
"Waterloo, Perimeter, Arizona"
]
] | In general relativity, astrophysical black holes are uniquely described by the Kerr metric. Observational tests of the Kerr nature of these compact objects and, hence, of general relativity, require a metric that encompasses a broader class of black holes as possible alternatives to the usual Kerr black holes. Several ... |
1801.00307 | Jiri Podolsky | Ondrej Hruska, Jiri Podolsky | Kundt spacetimes in the Gauss-Bonnet Gravity | 6 pages, short version of a paper currently being prepared by the
authors and Robert Svarc | WDS'16 Proceedings of Contributed Papers - Physics, 2016, Prague,
MATFYZPRESS, pages 66-71 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Gauss-Bonnet gravity is a special case of so-called Quadratic Gravity,
which is an extension of Einstein's theory with additional terms in action that
are quadratic combinations of the Riemann tensor and its contractions. These
corrections are needed, for example, in perturbative quantum gravity. We
consider the ... | [
{
"created": "Sun, 31 Dec 2017 15:57:10 GMT",
"version": "v1"
}
] | 2018-01-03 | [
[
"Hruska",
"Ondrej",
""
],
[
"Podolsky",
"Jiri",
""
]
] | The Gauss-Bonnet gravity is a special case of so-called Quadratic Gravity, which is an extension of Einstein's theory with additional terms in action that are quadratic combinations of the Riemann tensor and its contractions. These corrections are needed, for example, in perturbative quantum gravity. We consider the fa... |
2202.12105 | Jan Schee | Jan Schee and Evariste N. Boj | Temperature Anisotropy of the CMBR and the Non-zero Cosmological
Constant | null | null | 10.1142/S0218271822500857 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the effect of a spherically symmetric clump on the anisotropy of
the cosmic microwave background radiation temperature in the framework of the
standard model of cosmology with a non-zero cosmological constant $\Lambda$ and
we show that it weakens the Rees-Sciama effect.
| [
{
"created": "Thu, 24 Feb 2022 13:55:04 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Feb 2022 06:19:48 GMT",
"version": "v2"
}
] | 2022-10-26 | [
[
"Schee",
"Jan",
""
],
[
"Boj",
"Evariste N.",
""
]
] | We analyze the effect of a spherically symmetric clump on the anisotropy of the cosmic microwave background radiation temperature in the framework of the standard model of cosmology with a non-zero cosmological constant $\Lambda$ and we show that it weakens the Rees-Sciama effect. |
gr-qc/9806073 | null | M. Gasperini | Weighing the string mass with the COBE data | 14 pages, latex, five figures included using epsf. Talk given at
the"Fifth Paris Cosmology Colloquium" (Observatoire de Paris, 3-5 June 1998).
To appear in the Proceedings (World Scientific, Singapore), ed. by H. J. De
Vega and N. Sanchez. An updated collection of papers on the pre-big bang
scenario is availabl... | null | null | DFTT-32/98 | gr-qc astro-ph hep-ph hep-th | null | In the context of the pre-big bang scenario the large-scale CMB anisotropy
can be seeded by a primordial background of very light (or massless) axion
fluctuations. In that case the slope of the temperature anisotropy spectrum,
allowed by present observations, defines an allowed range of values for the
string mass sca... | [
{
"created": "Thu, 18 Jun 1998 13:36:22 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gasperini",
"M.",
""
]
] | In the context of the pre-big bang scenario the large-scale CMB anisotropy can be seeded by a primordial background of very light (or massless) axion fluctuations. In that case the slope of the temperature anisotropy spectrum, allowed by present observations, defines an allowed range of values for the string mass scale... |
1501.01180 | Martin Reiris | Martin Reiris | The asymptotic of static isolated systems and a generalised uniqueness
for Schwarzschild | 13 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is proved that any static system that is spacetime-geodesically complete
at infinity, and whose spacelike-topology outside a compact set is that of R^3
minus a ball, is asymptotically flat. The matter is assumed compactly supported
and no energy condition is required. A similar (though stronger) result applies
to ... | [
{
"created": "Tue, 6 Jan 2015 13:56:34 GMT",
"version": "v1"
}
] | 2015-01-07 | [
[
"Reiris",
"Martin",
""
]
] | It is proved that any static system that is spacetime-geodesically complete at infinity, and whose spacelike-topology outside a compact set is that of R^3 minus a ball, is asymptotically flat. The matter is assumed compactly supported and no energy condition is required. A similar (though stronger) result applies to bl... |
2204.04984 | Jose Luis Bl\'azquez-Salcedo | Jose Luis Bl\'azquez-Salcedo, Burkhard Kleihaus and Jutta Kunz | Compact Objects in Alternative Gravities | 17 pages, 10 figures; Special Issue Alternative Gravities and
Fundamental Cosmology (Altecosmofun'21) | Universe 2022, 8(3), 153 | 10.3390/universe8030153 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We address neutron stars and black holes in alternative gravities, after
recalling their basic properties in General Relativity. Among the plethora of
interesting alternative gravities we here focus on an interesting set of
scalar-tensor theories. We discuss the phenomenon of spontaneous scalarization,
that is matter... | [
{
"created": "Mon, 11 Apr 2022 09:54:55 GMT",
"version": "v1"
}
] | 2022-04-12 | [
[
"Blázquez-Salcedo",
"Jose Luis",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | We address neutron stars and black holes in alternative gravities, after recalling their basic properties in General Relativity. Among the plethora of interesting alternative gravities we here focus on an interesting set of scalar-tensor theories. We discuss the phenomenon of spontaneous scalarization, that is matter i... |
1507.01054 | Arif Mohd | Ted Jacobson, Arif Mohd | Black hole entropy and Lorentz-diffeomorphism Noether charge | 8 pages, double-column; This version: references updated; added
another example in section III. This version matches the published version | Phys. Rev. D 92, 124010 (2015) | 10.1103/PhysRevD.92.124010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that, in the first or second order orthonormal frame formalism, black
hole entropy is the horizon Noether charge for a combination of diffeomorphism
and local Lorentz symmetry involving the Lie derivative of the frame. The
Noether charge for diffeomorphisms alone is unsuitable, since a regular frame
cannot be... | [
{
"created": "Sat, 4 Jul 2015 01:32:49 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Dec 2015 00:18:59 GMT",
"version": "v2"
}
] | 2015-12-16 | [
[
"Jacobson",
"Ted",
""
],
[
"Mohd",
"Arif",
""
]
] | We show that, in the first or second order orthonormal frame formalism, black hole entropy is the horizon Noether charge for a combination of diffeomorphism and local Lorentz symmetry involving the Lie derivative of the frame. The Noether charge for diffeomorphisms alone is unsuitable, since a regular frame cannot be i... |
2301.05056 | Gil de Oliveira-Neto | G. Oliveira-Neto, D. L. Canedo and G. A. Monerat | Tunneling probability for the birth of universes with radiation,
cosmological constant and an ad hoc potential | The paper has 24 pages and 13 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study the birth of Friedmann-Lema\^{\i}tre-Robertson-Walker
(FLRW) models with zero ($k=0$) and negative ($k=-1$) curvatures of the spatial
sections. The material content of the models is composed of a radiation perfect
fluid and a positive cosmological constant. The models also have the presence
of a... | [
{
"created": "Thu, 12 Jan 2023 14:44:04 GMT",
"version": "v1"
}
] | 2023-01-13 | [
[
"Oliveira-Neto",
"G.",
""
],
[
"Canedo",
"D. L.",
""
],
[
"Monerat",
"G. A.",
""
]
] | In this work we study the birth of Friedmann-Lema\^{\i}tre-Robertson-Walker (FLRW) models with zero ($k=0$) and negative ($k=-1$) curvatures of the spatial sections. The material content of the models is composed of a radiation perfect fluid and a positive cosmological constant. The models also have the presence of an ... |
gr-qc/0606057 | Alexander Rogachev | Alexander Rogachev | The new cosmological model founded on the Scale Covariant Theory of
Gravitation and on the Dirac's Large Number Hypothesis. (Part 1) | 22 pages, no figures, e-mail for communication
laboratory@poltavadiamond.com.ua AVROGACHEV@yandex.ru | null | null | null | gr-qc | null | The new scale-covariant formulation of the Dirac's Large Number Hypothesis
(LNH) is proposed. The basic equations of LNH are formulated in the
scale-covariant and "G-invariant" (invariant on the transformation law for G)
form. On the basis of the Scale Covariant Theory of Gravitation and Dirac's LNH
the cosmological ... | [
{
"created": "Tue, 13 Jun 2006 10:22:44 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rogachev",
"Alexander",
""
]
] | The new scale-covariant formulation of the Dirac's Large Number Hypothesis (LNH) is proposed. The basic equations of LNH are formulated in the scale-covariant and "G-invariant" (invariant on the transformation law for G) form. On the basis of the Scale Covariant Theory of Gravitation and Dirac's LNH the cosmological mo... |
gr-qc/0607016 | Valerio Faraoni | Valerio Faraoni (Bishop's University) | Solar System experiments do not yet veto modified gravity models | 7 pages, latex, submitted to Phys. Rev. D | Phys.Rev.D74:023529,2006; Erratum-ibid.D74:023529,2007 | 10.1103/PhysRevD.74.023529 | null | gr-qc | null | The dynamical equivalence between modified and scalar-tensor gravity theories
is revisited and it is concluded that it breaks down in the limit to general
relativity. A gauge-independent analysis of cosmological perturbations in both
classes of theories lends independent support to this conclusion. As a
consequence, ... | [
{
"created": "Wed, 5 Jul 2006 07:23:11 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Faraoni",
"Valerio",
"",
"Bishop's University"
]
] | The dynamical equivalence between modified and scalar-tensor gravity theories is revisited and it is concluded that it breaks down in the limit to general relativity. A gauge-independent analysis of cosmological perturbations in both classes of theories lends independent support to this conclusion. As a consequence, th... |
1103.4184 | Hideki Maeda | Hideki Maeda, Steven Willison, Sourya Ray | Lovelock black holes with maximally symmetric horizons | 50 pages, no figure; v2, revised version. Section 4.2 on exact
solutions with matter added. Propositions 17 and 19 and Appendix B improved.
References added; v3, Proposition 20 added. Accepted for publication in
Classical and Quantum Gravity | Class.Quant.Grav.28:165005,2011 | 10.1088/0264-9381/28/16/165005 | CECS-PHY-11/02 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate some properties of n(\ge 4)-dimensional spacetimes having
symmetries corresponding to the isometries of an (n-2)-dimensional maximally
symmetric space in Lovelock gravity under the null or dominant energy
condition. The well-posedness of the generalized Misner-Sharp quasi-local mass
proposed in the pas... | [
{
"created": "Tue, 22 Mar 2011 01:22:14 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Apr 2011 18:24:56 GMT",
"version": "v2"
},
{
"created": "Fri, 1 Jul 2011 23:36:51 GMT",
"version": "v3"
}
] | 2011-08-11 | [
[
"Maeda",
"Hideki",
""
],
[
"Willison",
"Steven",
""
],
[
"Ray",
"Sourya",
""
]
] | We investigate some properties of n(\ge 4)-dimensional spacetimes having symmetries corresponding to the isometries of an (n-2)-dimensional maximally symmetric space in Lovelock gravity under the null or dominant energy condition. The well-posedness of the generalized Misner-Sharp quasi-local mass proposed in the past ... |
2301.09448 | Iarley P. Lobo Dr | Saulo Albuquerque, Valdir B. Bezerra, Iarley P. Lobo, Gabriel Macedo,
Pedro H. Morais, Ernesto Rodrigues, Luis C. N. Santos, Gislaine Var\~ao | Quantum Configuration and Phase Spaces: Finsler and Hamilton Geometries | 22 pages. Matches published version. Invited contribution for
Physics. Special Issue "New Advances in Quantum Geometry" | Physics 2023, 5(1), 90-115 | 10.3390/physics5010008 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we review two approaches that can describe, in a geometrical
way, the kinematics of particles that are affected by Planck-scale departures,
named Finsler and Hamilton geometries. By relying on maps that connect the
spaces of velocities and momenta, we discuss the properties of configuration
and phase s... | [
{
"created": "Mon, 23 Jan 2023 14:16:50 GMT",
"version": "v1"
}
] | 2023-01-24 | [
[
"Albuquerque",
"Saulo",
""
],
[
"Bezerra",
"Valdir B.",
""
],
[
"Lobo",
"Iarley P.",
""
],
[
"Macedo",
"Gabriel",
""
],
[
"Morais",
"Pedro H.",
""
],
[
"Rodrigues",
"Ernesto",
""
],
[
"Santos",
"Luis C. N.",
... | In this paper, we review two approaches that can describe, in a geometrical way, the kinematics of particles that are affected by Planck-scale departures, named Finsler and Hamilton geometries. By relying on maps that connect the spaces of velocities and momenta, we discuss the properties of configuration and phase spa... |
2101.11554 | Dipankar Debnath Dr | Kaushik Chattopadhyay, Arindam Bhattacharyya and Dipankar Debnath | A Study On Some Geometric and Physical Properties of Hyper-Generalised
Quasi-Einstein Spacetime | null | null | 10.1142/S0219887821501723 | null | gr-qc math.DG | http://creativecommons.org/licenses/by/4.0/ | In the present paper we discuss about a set of geometric and physical
properties of hyper-generalised quasi-Einstein spacetime. At the beginning we
discuss about pseudosymmetry over a hyper-generalised quasi-Einstein spacetime.
Here we discuss about W2-Ricci pseudosymmetry, Z-Ricci pseudosymmetry, Ricci
pseudosymmetr... | [
{
"created": "Wed, 27 Jan 2021 17:20:34 GMT",
"version": "v1"
}
] | 2021-07-09 | [
[
"Chattopadhyay",
"Kaushik",
""
],
[
"Bhattacharyya",
"Arindam",
""
],
[
"Debnath",
"Dipankar",
""
]
] | In the present paper we discuss about a set of geometric and physical properties of hyper-generalised quasi-Einstein spacetime. At the beginning we discuss about pseudosymmetry over a hyper-generalised quasi-Einstein spacetime. Here we discuss about W2-Ricci pseudosymmetry, Z-Ricci pseudosymmetry, Ricci pseudosymmetry ... |
1502.00267 | Victor N. Pervushin | Victor N. Pervushin, Andrej B. Arbuzov, Alexander Yu. Cherny, Vadim I.
Shilin, Rashid G. Nazmitdinov, Alexander E. Pavlov, Konstantin N. Pichugin,
and Alexander F. Zakharov | Origin of masses in the Early Universe | 5 pages, no figures, to be published in proceedings of the XXII
International Baldin Seminar on High Energy Physics Problems "Relativistic
Nuclear Physics and Quantum Chromodynamics", Dubna, Russina, September 15-20,
2014 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | New model is suggested, where the Casimir mechanism is the source of masses
and conformal symmetry breaking at the Planck epoch in the beginning of the
Universe. The mechanism is the Casimir energy and associated condensate, which
are resulted from the vacuum postulate and normal ordering of the conformal
invariant H... | [
{
"created": "Sun, 1 Feb 2015 14:49:39 GMT",
"version": "v1"
}
] | 2015-02-03 | [
[
"Pervushin",
"Victor N.",
""
],
[
"Arbuzov",
"Andrej B.",
""
],
[
"Cherny",
"Alexander Yu.",
""
],
[
"Shilin",
"Vadim I.",
""
],
[
"Nazmitdinov",
"Rashid G.",
""
],
[
"Pavlov",
"Alexander E.",
""
],
[
"Pichugin",
... | New model is suggested, where the Casimir mechanism is the source of masses and conformal symmetry breaking at the Planck epoch in the beginning of the Universe. The mechanism is the Casimir energy and associated condensate, which are resulted from the vacuum postulate and normal ordering of the conformal invariant Ham... |
2112.13042 | Davide Batic | Andres Felipe Estupinan Salamanca and Sergio Bravo Medina and Marek
Nowakowski and Davide Batic | Non-singular non-flat universes | 31 pages, 14 figures | Annals of Physics, 436, 168727 (2022) | 10.1016/j.aop.2021.168727 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quest to understand better the nature of the initial cosmological
singularity is with us since the discovery of the expanding universe. Here, we
propose several non-flat models, among them the standard cosmological scenario
with a critical cosmological constant, the Einstein-Cartan cosmology, the
Milne-McCrea uni... | [
{
"created": "Fri, 24 Dec 2021 12:06:53 GMT",
"version": "v1"
}
] | 2021-12-28 | [
[
"Salamanca",
"Andres Felipe Estupinan",
""
],
[
"Medina",
"Sergio Bravo",
""
],
[
"Nowakowski",
"Marek",
""
],
[
"Batic",
"Davide",
""
]
] | The quest to understand better the nature of the initial cosmological singularity is with us since the discovery of the expanding universe. Here, we propose several non-flat models, among them the standard cosmological scenario with a critical cosmological constant, the Einstein-Cartan cosmology, the Milne-McCrea unive... |
gr-qc/0511158 | Alan D. Rendall | Alan D. Rendall | Dynamics of $k$-essence | null | Class.Quant.Grav. 23 (2006) 1557-1570 | 10.1088/0264-9381/23/5/008 | AEI-2005-180 | gr-qc | null | There are a number of mathematical theorems in the literature on the dynamics
of cosmological models with accelerated expansion driven by a positive
cosmological constant $\Lambda$ or a nonlinear scalar field with potential $V$
(quintessence) which do not assume homogeneity and isotropy from the beginning.
The aim of... | [
{
"created": "Tue, 29 Nov 2005 12:06:00 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Rendall",
"Alan D.",
""
]
] | There are a number of mathematical theorems in the literature on the dynamics of cosmological models with accelerated expansion driven by a positive cosmological constant $\Lambda$ or a nonlinear scalar field with potential $V$ (quintessence) which do not assume homogeneity and isotropy from the beginning. The aim of t... |
gr-qc/0506131 | Alan D. Rendall | David Tegankong and Alan D. Rendall | On the nature of initial singularities for solutions of the
Einstein-Vlasov-scalar field system with surface symmetry | null | null | 10.1017/S0305004106009571 | AEI-2005-116 | gr-qc | null | Global existence results in the past time direction of cosmological models
with collisionless matter and a massless scalar field are presented. It is
shown that the singularity is crushing and that the Kretschmann scalar diverges
uniformly as the singularity is approached. In the case without Vlasov matter,
the singu... | [
{
"created": "Wed, 29 Jun 2005 11:32:56 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Tegankong",
"David",
""
],
[
"Rendall",
"Alan D.",
""
]
] | Global existence results in the past time direction of cosmological models with collisionless matter and a massless scalar field are presented. It is shown that the singularity is crushing and that the Kretschmann scalar diverges uniformly as the singularity is approached. In the case without Vlasov matter, the singula... |
2407.07104 | Krishnendu De Dr. | Krishnendu De and Uday Chand De | Pseudo generalized Ricci-recurrent spacetimes and modified gravity | arXiv admin note: substantial text overlap with arXiv:2406.16113 | Modern Physics Letters A (2024) | 10.1142/S0217732324500627 | null | gr-qc math.DG | http://creativecommons.org/licenses/by/4.0/ | In this paper we introduce and characterize a pseudo generalized
Ricci-recurrent spacetimes and produce an example to verify the existence of
such a spacetime. Then we demonstrate that a conformally flat generalized
Ricci-recurrent spacetime with certain condition is a pseudo quasi-Einstein
spacetime. Besides, it is ... | [
{
"created": "Sun, 23 Jun 2024 14:09:27 GMT",
"version": "v1"
}
] | 2024-07-11 | [
[
"De",
"Krishnendu",
""
],
[
"De",
"Uday Chand",
""
]
] | In this paper we introduce and characterize a pseudo generalized Ricci-recurrent spacetimes and produce an example to verify the existence of such a spacetime. Then we demonstrate that a conformally flat generalized Ricci-recurrent spacetime with certain condition is a pseudo quasi-Einstein spacetime. Besides, it is pr... |
2208.06664 | Reggie Pantig | Reggie C. Pantig, Leonardo Mastrototaro, Gaetano Lambiase, Ali
\"Ovg\"un | Shadow, lensing, quasinormal modes, greybody bounds and neutrino
propagation by dyonic ModMax black holes | 30 pages, 20 figures. Finalized version of the paper | Eur. Phys. J. C (2022) 82:1155 | 10.1140/epjc/s10052-022-11125-y | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by recent work on the Modified Maxwell (ModMax) black holes
[Phys.Lett.B 10.1016/j.physletb.2020.136011], which are invariant in duality
rotations and conformal transformations founded in [ Phys.Rev.D
10.1103/PhysRevD.102.121703], we probe its effects on the shadow cast, weak
field gravitational lensing, an... | [
{
"created": "Sat, 13 Aug 2022 14:41:52 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Aug 2022 00:38:57 GMT",
"version": "v2"
},
{
"created": "Thu, 22 Dec 2022 11:38:58 GMT",
"version": "v3"
}
] | 2022-12-23 | [
[
"Pantig",
"Reggie C.",
""
],
[
"Mastrototaro",
"Leonardo",
""
],
[
"Lambiase",
"Gaetano",
""
],
[
"Övgün",
"Ali",
""
]
] | Motivated by recent work on the Modified Maxwell (ModMax) black holes [Phys.Lett.B 10.1016/j.physletb.2020.136011], which are invariant in duality rotations and conformal transformations founded in [ Phys.Rev.D 10.1103/PhysRevD.102.121703], we probe its effects on the shadow cast, weak field gravitational lensing, and ... |
gr-qc/0306075 | Pedro Marronetti | Pedro Marronetti and Stuart L. Shapiro | Relativistic Models for Binary Neutron Stars with Arbitrary Spins | 21 pages, 14 figures. A few explanatory sentences added and some
typos corrected. Accepted for publication in Phys. Rev. D | Phys.Rev. D68 (2003) 104024 | 10.1103/PhysRevD.68.104024 | null | gr-qc astro-ph | null | We introduce a new numerical scheme for solving the initial value problem for
quasiequilibrium binary neutron stars allowing for arbitrary spins. The coupled
Einstein field equations and equations of relativistic hydrodynamics are solved
in the Wilson-Mathews conformal thin sandwich formalism. We construct sequences
... | [
{
"created": "Tue, 17 Jun 2003 17:10:43 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Oct 2003 18:14:48 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Marronetti",
"Pedro",
""
],
[
"Shapiro",
"Stuart L.",
""
]
] | We introduce a new numerical scheme for solving the initial value problem for quasiequilibrium binary neutron stars allowing for arbitrary spins. The coupled Einstein field equations and equations of relativistic hydrodynamics are solved in the Wilson-Mathews conformal thin sandwich formalism. We construct sequences of... |
gr-qc/0408011 | Bojan Losic | B. Losic and W.G. Unruh | On the initial value problem for second order scalar fluctuations in
Einstein static | 8 pages, no figures, changes made to the presentation throughout to
emphasize the linear nature of the analysis and the treatment of the
irrotational perfect fluid. Conclusions unchanged. Submitted to PRD | Phys.Rev. D71 (2005) 044011 | 10.1103/PhysRevD.71.044011 | null | gr-qc | null | We consider fluctuations in a perfect irrotational fluid coupled to gravity
in an Einstein static universe background. We show that the homogeneous linear
perturbations of the scalar and metric fluctuations in the Einstein static
universe must be present if the second order constraint equations are to be
integrable. ... | [
{
"created": "Wed, 4 Aug 2004 00:22:05 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Nov 2004 03:24:03 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Losic",
"B.",
""
],
[
"Unruh",
"W. G.",
""
]
] | We consider fluctuations in a perfect irrotational fluid coupled to gravity in an Einstein static universe background. We show that the homogeneous linear perturbations of the scalar and metric fluctuations in the Einstein static universe must be present if the second order constraint equations are to be integrable. I.... |
2311.02729 | Milena Skvortsova | Milena Skvortsova | Stability of asymptotically flat (2+1)-dimensional black holes with
Gauss-Bonnet corrections | The title is changed. Corrections inserted. (4 pages, 2 figures) | Grav. Cosmol. 2024, 30 (1), 68-70 | 10.1134/S0202289324010110 | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | Using the integration of wave equation in time-domain we show that scalar
field perturbations around the $(2+1)$-dimensional asymptotically flat black
hole with Gauss-Bonnet corrections is dynamically stable even for the near
extreme values of the coupling constant.
| [
{
"created": "Sun, 5 Nov 2023 18:15:58 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Nov 2023 16:18:27 GMT",
"version": "v2"
},
{
"created": "Thu, 7 Dec 2023 17:58:32 GMT",
"version": "v3"
}
] | 2024-04-19 | [
[
"Skvortsova",
"Milena",
""
]
] | Using the integration of wave equation in time-domain we show that scalar field perturbations around the $(2+1)$-dimensional asymptotically flat black hole with Gauss-Bonnet corrections is dynamically stable even for the near extreme values of the coupling constant. |
2109.05718 | Ilham Prasetyo | I. Prasetyo, H. Maulana, H. S. Ramadhan, A. Sulaksono | $2.6 M_\odot$ Compact Object and Neutron Stars within Eddington-Inspired
Born-Infeld Theory of Gravity | 41 pages, 14 figures, accepted for publication in Physical Review D | Phys. Rev. D 104 (2021) 084029 | 10.1103/PhysRevD.104.084029 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In the context of whether a massive compact object recently observed in the
GW190814 event is a neutron star (NS) or not, we have studied the role of the
parameters $\kappa$ and $\Lambda_c$ of the Eddington-inspired Born-Infeld
(EiBI) gravity theory on the NS mass-radius relation, moment of inertia, and
tidal deforma... | [
{
"created": "Mon, 13 Sep 2021 05:55:11 GMT",
"version": "v1"
}
] | 2021-10-07 | [
[
"Prasetyo",
"I.",
""
],
[
"Maulana",
"H.",
""
],
[
"Ramadhan",
"H. S.",
""
],
[
"Sulaksono",
"A.",
""
]
] | In the context of whether a massive compact object recently observed in the GW190814 event is a neutron star (NS) or not, we have studied the role of the parameters $\kappa$ and $\Lambda_c$ of the Eddington-inspired Born-Infeld (EiBI) gravity theory on the NS mass-radius relation, moment of inertia, and tidal deformabi... |
2106.14697 | Petya Nedkova | Galin Gyulchev, Petya Nedkova, Tsvetan Vetsov, Stoytcho Yazadjiev | Image of the thin accretion disk around compact objects in the
Einstein-Gauss-Bonnet gravity | 16 pages, 8 figures | null | 10.1140/epjc/s10052-021-09624-5 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We study the optical appearance of a thin accretion disk around compact
objects within the Einstein-Gauss-Bonnet gravity. Considering static
spherically symmetric black holes and naked singularities we search for
characteristic signatures which can arise in the observable images due to the
modification of general rel... | [
{
"created": "Mon, 28 Jun 2021 13:26:17 GMT",
"version": "v1"
}
] | 2021-10-27 | [
[
"Gyulchev",
"Galin",
""
],
[
"Nedkova",
"Petya",
""
],
[
"Vetsov",
"Tsvetan",
""
],
[
"Yazadjiev",
"Stoytcho",
""
]
] | We study the optical appearance of a thin accretion disk around compact objects within the Einstein-Gauss-Bonnet gravity. Considering static spherically symmetric black holes and naked singularities we search for characteristic signatures which can arise in the observable images due to the modification of general relat... |
gr-qc/0202056 | Dr. Parongama Sen | A. K. Raychaudhuri | Singularity-free Cosmological Solutions with Non-rotating Perfect Fluids | 7 pages revtex; to appear in Physical Review D | Gen.Rel.Grav. 36 (2004) 343-359 | 10.1023/B:GERG.0000010480.06584.d6 | null | gr-qc | null | The paper establishes the result that solutions of the type described in the
title of the article are only those that have been already presented in the
literature. The procedure adopted in the paper is somewhat novel - while the
usual practice is to display an exact solution and then to examine whether it
is singula... | [
{
"created": "Fri, 15 Feb 2002 11:52:22 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Raychaudhuri",
"A. K.",
""
]
] | The paper establishes the result that solutions of the type described in the title of the article are only those that have been already presented in the literature. The procedure adopted in the paper is somewhat novel - while the usual practice is to display an exact solution and then to examine whether it is singulari... |
2207.03307 | Johanna N. Borissova | Johanna N. Borissova, Bianca Dittrich | Towards effective actions for the continuum limit of spin foams | 17 pages + references; v2: eq. (6.17) corrected | null | 10.1088/1361-6382/accbfb | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spin foams arise from a quantization of classical gravity expressed via the
Plebanski action. Key open questions related to the continuum limit of spin
foams are whether general relativity is reproduced and what type of corrections
could emerge. As a central component for spin foam dynamics, recent results on
the con... | [
{
"created": "Thu, 7 Jul 2022 14:10:41 GMT",
"version": "v1"
},
{
"created": "Sun, 14 May 2023 18:45:03 GMT",
"version": "v2"
}
] | 2023-05-16 | [
[
"Borissova",
"Johanna N.",
""
],
[
"Dittrich",
"Bianca",
""
]
] | Spin foams arise from a quantization of classical gravity expressed via the Plebanski action. Key open questions related to the continuum limit of spin foams are whether general relativity is reproduced and what type of corrections could emerge. As a central component for spin foam dynamics, recent results on the conti... |
2405.04833 | Dr. Sudhaker Upadhyay | Muhammad Yasir, Tiecheng Xia and Sudhaker Upadhyay | Thermal analysis of black hole in de Rham--Gabadadze--Tolley massive
gravity in Barrow entropy framework | 19 pages, 18 captioned figures, published in Physica Scripta | Phys. Scr. 99 (2024) 065003 | 10.1088/1402-4896/ad4071 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | This study examines a recently hypothesized black hole solution in de
Rham--Gabadadze--Tolley massive gravity. Firstly, we consider the negative
cosmological constant as a thermodynamic pressure. We extract the
thermodynamical properties such as Hawking temperature, heat capacity and Gibbs
free energy using the Barro... | [
{
"created": "Wed, 8 May 2024 06:08:09 GMT",
"version": "v1"
}
] | 2024-05-09 | [
[
"Yasir",
"Muhammad",
""
],
[
"Xia",
"Tiecheng",
""
],
[
"Upadhyay",
"Sudhaker",
""
]
] | This study examines a recently hypothesized black hole solution in de Rham--Gabadadze--Tolley massive gravity. Firstly, we consider the negative cosmological constant as a thermodynamic pressure. We extract the thermodynamical properties such as Hawking temperature, heat capacity and Gibbs free energy using the Barrow ... |
gr-qc/9710030 | Paulo Rodrigues Lima Vargas Moniz | O. Bertolami and P.V. Moniz | Can Spontaneous Supersymmetry Breaking in a Quantum Universe Induce the
Emergence of Classical Spacetimes ? | 3 pages, LaTeX, requires mprocl.sty available at
http://shemesh.fiz.huji.ac.il/MG8/submission.html, talk given in the Quantum
Cosmology session at the MG8 conference, corrections correspond to removing
some typos mistakes | null | null | null | gr-qc | null | We introduce the set of constraints the wave function of the Universe has to
satisfy in order to describe an Universe undergoing through the process of
spontaneous breaking of supersymmetry and discuss the way this may lead to the
emergence of classical spacetime.
| [
{
"created": "Mon, 6 Oct 1997 11:02:55 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Dec 1997 12:42:33 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Bertolami",
"O.",
""
],
[
"Moniz",
"P. V.",
""
]
] | We introduce the set of constraints the wave function of the Universe has to satisfy in order to describe an Universe undergoing through the process of spontaneous breaking of supersymmetry and discuss the way this may lead to the emergence of classical spacetime. |
1412.5223 | Mauricio Bellini | Jes\'us Mart\'in Romero, Mauricio Bellini (IFIMAR - CONICET and UNMdP) | WIMT in Gullstr\"and-Painlev\'e and Reissner-Nordstr\"om metrics:
induced Stable Gravito-magnetic Monopoles | Accepted in Eur. Phys. J. C | null | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The aim of this work is to apply WIMT to Gullstr\'and-Painlev\'e and
Reissner-Nordstr\"om metrics in the framework of Weitzeb\"ock Induced Matter
Theory (WIMT). This is a newly developed method that extends Induced Matter
Theory from a curved 5D manifold using the Weitzeb\"ock's geometry, using the
fact that the Riem... | [
{
"created": "Tue, 16 Dec 2014 22:48:52 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Feb 2015 19:31:41 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Mar 2015 22:32:11 GMT",
"version": "v3"
},
{
"created": "Mon, 4 May 2015 21:18:57 GMT",
"version": "v4"
}
] | 2015-05-06 | [
[
"Romero",
"Jesús Martín",
"",
"IFIMAR - CONICET and UNMdP"
],
[
"Bellini",
"Mauricio",
"",
"IFIMAR - CONICET and UNMdP"
]
] | The aim of this work is to apply WIMT to Gullstr\'and-Painlev\'e and Reissner-Nordstr\"om metrics in the framework of Weitzeb\"ock Induced Matter Theory (WIMT). This is a newly developed method that extends Induced Matter Theory from a curved 5D manifold using the Weitzeb\"ock's geometry, using the fact that the Rieman... |
2403.19608 | Hugo Garcia-Compean | H. Garc\'ia-Compe\'an, C. Ramos | Classical Kerr-Schild double copy in bigravity for maximally symmetric
spacetimes | 36+1 pages, no figures, corrections and precisions were done,
references added, typos corrected | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A generalized Kerr-Schild ansatz for bigravity, already considered in the
literature, which leads to linear interactions between the metrics is used to
study the bigravity equations in the context of the double copy. By contracting
the resulting spin-2 field bigravity equations of motion using Killing vector
fields, ... | [
{
"created": "Thu, 28 Mar 2024 17:29:12 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Apr 2024 06:44:43 GMT",
"version": "v2"
},
{
"created": "Fri, 21 Jun 2024 22:52:29 GMT",
"version": "v3"
}
] | 2024-06-25 | [
[
"García-Compeán",
"H.",
""
],
[
"Ramos",
"C.",
""
]
] | A generalized Kerr-Schild ansatz for bigravity, already considered in the literature, which leads to linear interactions between the metrics is used to study the bigravity equations in the context of the double copy. By contracting the resulting spin-2 field bigravity equations of motion using Killing vector fields, as... |
1405.3932 | Miguel Angel Garcia Aspeitia | Miguel A. Garc\'ia-Aspeitia and L. Arturo Ure\~na-L\'opez | Stellar stability in brane-worlds revisited | 5 pages, 1 figure | Class. Quantum Grav. 32 (2015) 025014 | 10.1088/0264-9381/32/2/025014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider here the general conditions for the stability of brane stars that
obey a so called a "minimal setup": the nonlocal anisotropic stress and energy
flux are everywhere absent, and the only permitted Weyl correction is the
interior solution of the nonlocal energy density. Along with a series of simple
conditi... | [
{
"created": "Thu, 15 May 2014 18:26:11 GMT",
"version": "v1"
},
{
"created": "Sun, 28 Dec 2014 23:00:27 GMT",
"version": "v2"
}
] | 2014-12-30 | [
[
"García-Aspeitia",
"Miguel A.",
""
],
[
"Ureña-López",
"L. Arturo",
""
]
] | We consider here the general conditions for the stability of brane stars that obey a so called a "minimal setup": the nonlocal anisotropic stress and energy flux are everywhere absent, and the only permitted Weyl correction is the interior solution of the nonlocal energy density. Along with a series of simple condition... |
2207.03213 | Oleg Zaslavskii | O. B. Zaslavskii | The Ba\~nados-Silk-West effect with immovable particles near static
black holes and its rotational counterpart | 10 pages. Substantial revision, typos corrected. To appear in Grav.
Cosm | Grav. and Cosmology 29 (2023) 74 | 10.1134/S0202289323010140 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The BSW effect implies that the energy $E_{c.m.}$ in the center of mass frame
of two particles colliding near a black hole can become unbounded. Usually, it
is assumed that particles move along geodesics or electrogeodesics. Instead, we
consider another version of this effect. One particle is situated at rest near
a ... | [
{
"created": "Thu, 7 Jul 2022 10:36:02 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Oct 2022 11:53:29 GMT",
"version": "v2"
}
] | 2023-04-12 | [
[
"Zaslavskii",
"O. B.",
""
]
] | The BSW effect implies that the energy $E_{c.m.}$ in the center of mass frame of two particles colliding near a black hole can become unbounded. Usually, it is assumed that particles move along geodesics or electrogeodesics. Instead, we consider another version of this effect. One particle is situated at rest near a st... |
2304.03660 | Beyhan Pulice | Elham Ghorani, Beyhan Puli\c{c}e, Farruh Atamurotov, Javlon Rayimbaev,
Ahmadjon Abdujabbarov, Durmu\c{s} Demir | Probing Geometric Proca in Metric-Palatini Gravity with Black Hole
Shadow and Photon Motion | 19 pages, 14 figures. To appear in European Physical Journal C | null | 10.1140/epjc/s10052-023-11490-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extended metric-Palatini gravity, quadratic in the antisymmetric part of the
affine curvature, is known to lead to the general relativity plus a geometric
Proca field. The geometric Proca, equivalent of the non-metricity vector in the
torsion-free affine connection, qualifies to be a distinctive signature of the
affi... | [
{
"created": "Fri, 7 Apr 2023 14:29:02 GMT",
"version": "v1"
}
] | 2023-05-10 | [
[
"Ghorani",
"Elham",
""
],
[
"Puliçe",
"Beyhan",
""
],
[
"Atamurotov",
"Farruh",
""
],
[
"Rayimbaev",
"Javlon",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
],
[
"Demir",
"Durmuş",
""
]
] | Extended metric-Palatini gravity, quadratic in the antisymmetric part of the affine curvature, is known to lead to the general relativity plus a geometric Proca field. The geometric Proca, equivalent of the non-metricity vector in the torsion-free affine connection, qualifies to be a distinctive signature of the affine... |
1403.7352 | Chengyong Zhang | Cheng-Yong Zhang, Yu Tian, Xiao-Ning Wu, Shao-Jun Zhang | Entropy of isolated horizon from surface term of gravitational action | 11 pages | Class. Quantum Grav. 31 (2014) 195002 | 10.1088/0264-9381/31/19/195002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Starting from the surface term of gravitational action, one can construct a
Virasoro algebra with central extension, with which the horizon entropy can be
derived by using Cardy formula. This approach gives a new routine to calculate
and interpret the horizon entropy. In this paper, we generalize this approach
to a m... | [
{
"created": "Fri, 28 Mar 2014 12:07:28 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Zhang",
"Cheng-Yong",
""
],
[
"Tian",
"Yu",
""
],
[
"Wu",
"Xiao-Ning",
""
],
[
"Zhang",
"Shao-Jun",
""
]
] | Starting from the surface term of gravitational action, one can construct a Virasoro algebra with central extension, with which the horizon entropy can be derived by using Cardy formula. This approach gives a new routine to calculate and interpret the horizon entropy. In this paper, we generalize this approach to a mor... |
2007.02395 | Leila Graef | Leila L. Graef, Rudnei O. Ramos, Gustavo S. Vicente | Gravitational Particle Production in Loop Quantum Cosmology | null | Phys. Rev. D 102, 043518 (2020) | 10.1103/PhysRevD.102.043518 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the gravitational particle production in the bounce phase of
Loop Quantum Cosmology (LQC). We perform both analytical and numerical analysis
of the particle production process in a LQC scenario with Bunch-Davies vacuum
initial condition in the contracting phase. We obtain that if we extend the
validity... | [
{
"created": "Sun, 5 Jul 2020 17:31:26 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Aug 2020 22:13:58 GMT",
"version": "v2"
}
] | 2020-08-21 | [
[
"Graef",
"Leila L.",
""
],
[
"Ramos",
"Rudnei O.",
""
],
[
"Vicente",
"Gustavo S.",
""
]
] | We investigate the gravitational particle production in the bounce phase of Loop Quantum Cosmology (LQC). We perform both analytical and numerical analysis of the particle production process in a LQC scenario with Bunch-Davies vacuum initial condition in the contracting phase. We obtain that if we extend the validity o... |
1711.02230 | Vasilis Oikonomou | S.D. Odintsov, V.K. Oikonomou | Autonomous Dynamical System Approach for $f(R)$ Gravity | PRD Accepted | null | 10.1103/PhysRevD.96.104049 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we shall investigate the cosmological dynamical system of $f(R)$
gravity, by constructing it in such a way so that it is rendered autonomous. We
shall study the vacuum $f(R)$ gravity case, but also the case that matter and
radiation perfect fluids are present along with the $f(R)$ gravity. The
dynamical ... | [
{
"created": "Tue, 7 Nov 2017 00:17:13 GMT",
"version": "v1"
}
] | 2018-01-17 | [
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | In this work we shall investigate the cosmological dynamical system of $f(R)$ gravity, by constructing it in such a way so that it is rendered autonomous. We shall study the vacuum $f(R)$ gravity case, but also the case that matter and radiation perfect fluids are present along with the $f(R)$ gravity. The dynamical sy... |
2402.11300 | Pardyumn Kumar Sahoo | Sayantan Ghosh, Raja Solanki, P.K. Sahoo | Dynamical system analysis of Dirac-Born-Infeld scalar field cosmology in
coincident $f(Q)$ gravity | Chinese Physics C published version | Chinese Physics C, 48(9) (2024) 095102 | 10.1088/1674-1137/ad50aa | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this article, we offer the dynamical system analysis of the DBI
(Dirac-Born-Infeld) scalar field in a modified $f(Q)$ gravity context. We have
taken a polynomial form of modified gravity and used two different kinds of
scalar potential, i.e., polynomial and exponential, and found a closed
autonomous dynamical syst... | [
{
"created": "Sat, 17 Feb 2024 14:41:22 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Mar 2024 15:51:15 GMT",
"version": "v2"
},
{
"created": "Tue, 19 Mar 2024 14:25:42 GMT",
"version": "v3"
},
{
"created": "Tue, 23 Apr 2024 10:30:55 GMT",
"version": "v4"
},
{
"c... | 2024-07-23 | [
[
"Ghosh",
"Sayantan",
""
],
[
"Solanki",
"Raja",
""
],
[
"Sahoo",
"P. K.",
""
]
] | In this article, we offer the dynamical system analysis of the DBI (Dirac-Born-Infeld) scalar field in a modified $f(Q)$ gravity context. We have taken a polynomial form of modified gravity and used two different kinds of scalar potential, i.e., polynomial and exponential, and found a closed autonomous dynamical system... |
gr-qc/9906095 | Mark E. Rupright | Yvonne Choquet-Bruhat, James Isenberg, and James W. York, Jr | Einstein Constraints on Asymptotically Euclidean Manifolds | 29 pages, no figures, RevTeX | Phys.Rev. D61 (2000) 084034 | 10.1103/PhysRevD.61.084034 | null | gr-qc | null | We consider the Einstein constraints on asymptotically euclidean manifolds
$M$ of dimension $n \geq 3$ with sources of both scaled and unscaled types. We
extend to asymptotically euclidean manifolds the constructive method of proof
of existence. We also treat discontinuous scaled sources. In the last section
we obtai... | [
{
"created": "Wed, 23 Jun 1999 17:22:57 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Jul 1999 18:00:17 GMT",
"version": "v2"
}
] | 2012-08-27 | [
[
"Choquet-Bruhat",
"Yvonne",
""
],
[
"Isenberg",
"James",
""
],
[
"York,",
"James W.",
"Jr"
]
] | We consider the Einstein constraints on asymptotically euclidean manifolds $M$ of dimension $n \geq 3$ with sources of both scaled and unscaled types. We extend to asymptotically euclidean manifolds the constructive method of proof of existence. We also treat discontinuous scaled sources. In the last section we obtain ... |
1112.3694 | Nicolas Yunes | Nicolas Yunes | Gravitational Waves from Compact Binaries as Probes of the Universe | 14 pages, 4 figures, submitted to the JGRG Conference Proceedings,
Plenary Talk | null | null | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The future detection of gravitational wave forces us to consider the many
ways in which astrophysics, gravitational wave theory and fundamental theory
will interact. In this paper, I summarize some recent work done to develop such
an interface. In particular, I concentrate on how non-vacuum astrophysical
environments... | [
{
"created": "Fri, 16 Dec 2011 00:48:06 GMT",
"version": "v1"
}
] | 2011-12-19 | [
[
"Yunes",
"Nicolas",
""
]
] | The future detection of gravitational wave forces us to consider the many ways in which astrophysics, gravitational wave theory and fundamental theory will interact. In this paper, I summarize some recent work done to develop such an interface. In particular, I concentrate on how non-vacuum astrophysical environments c... |
1807.07062 | K Haris | K. Haris, Ajit Kumar Mehta, Sumit Kumar, Tejaswi Venumadhav and
Parameswaran Ajith | Identifying strongly lensed gravitational wave signals from binary black
hole mergers | 12 pages, 11 figures | null | null | LIGO- P1800155 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the rate of gravitational-wave (GW) detections by Advanced LIGO and
Virgo, we expect these detectors to observe hundreds of binary black hole
mergers as they achieve their design sensitivities (within a few years). A
small fraction of them can undergo strong gravitational lensing by intervening
galaxies, res... | [
{
"created": "Wed, 18 Jul 2018 17:56:20 GMT",
"version": "v1"
}
] | 2018-07-19 | [
[
"Haris",
"K.",
""
],
[
"Mehta",
"Ajit Kumar",
""
],
[
"Kumar",
"Sumit",
""
],
[
"Venumadhav",
"Tejaswi",
""
],
[
"Ajith",
"Parameswaran",
""
]
] | Based on the rate of gravitational-wave (GW) detections by Advanced LIGO and Virgo, we expect these detectors to observe hundreds of binary black hole mergers as they achieve their design sensitivities (within a few years). A small fraction of them can undergo strong gravitational lensing by intervening galaxies, resul... |
2211.06538 | Massimo Porrati | Reza Javadinezhad and Massimo Porrati | A Supertranslation-Invariant Formula for the Angular Momentum Flux in
Gravitational Scattering | 9 pages. Minor misprints corrected. Closure of the rotation algebra
for non-radiating spacetimes explicitly verified. To appear in Physical
Review Letters | null | 10.1103/PhysRevLett.130.011401 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The angular momentum radiated in gravitational scattering can be changed by
performing a supertranslation of the asymptotic metric, i.e. by adding
radiation with infinite wavelenght to the metric. This puzzling property can be
avoided by adopting a supertranslation-invariant definition of the angular
momentum flux in... | [
{
"created": "Sat, 12 Nov 2022 01:15:10 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Dec 2022 16:46:55 GMT",
"version": "v2"
}
] | 2023-01-18 | [
[
"Javadinezhad",
"Reza",
""
],
[
"Porrati",
"Massimo",
""
]
] | The angular momentum radiated in gravitational scattering can be changed by performing a supertranslation of the asymptotic metric, i.e. by adding radiation with infinite wavelenght to the metric. This puzzling property can be avoided by adopting a supertranslation-invariant definition of the angular momentum flux in g... |
gr-qc/0107044 | Guillermo A. Gonzalez | Omar A. Espitia and Guillermo A. Gonzalez | Relativistic Static Thin Disks: The Counter-Rotating Model | 19 pages, 6 figures. Submitted to Physical Review D | Phys.Rev.D68:104028,2003 | 10.1103/PhysRevD.68.104028 | null | gr-qc | null | A detailed study of the Counter-Rotating Model (CRM) for generic finite
static axially symmetric thin disks with nonzero radial pressure is presented.
We find a general constraint over the counter-rotating tangential velocities
needed to cast the surface energy-momentum tensor of the disk as the
superposition of two ... | [
{
"created": "Wed, 11 Jul 2001 23:27:31 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Espitia",
"Omar A.",
""
],
[
"Gonzalez",
"Guillermo A.",
""
]
] | A detailed study of the Counter-Rotating Model (CRM) for generic finite static axially symmetric thin disks with nonzero radial pressure is presented. We find a general constraint over the counter-rotating tangential velocities needed to cast the surface energy-momentum tensor of the disk as the superposition of two co... |
2303.02069 | Saptaswa Ghosh | Abhishek Chowdhuri, Saptaswa Ghosh, Arpan Bhattacharyya | A review on analytical studies in Gravitational Lensing | 44 pages, 4 figures, 3 tables, references updated, Published as
invited review article for the Frontiers in Physics research | Front. Phys. 11, 1113909 (2023) | 10.3389/fphy.2023.1113909 | null | gr-qc astro-ph.CO astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this study, we review some current studies on Gravitational Lensing for
black holes, mainly in the context of general relativity. We mainly focus on
the analytical studies related to lensing with references to observational
results. We start with reviewing lensing in spherically symmetric Schwarzschild
spacetime, ... | [
{
"created": "Fri, 3 Mar 2023 16:37:19 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Mar 2023 17:07:47 GMT",
"version": "v2"
},
{
"created": "Sun, 28 May 2023 19:48:59 GMT",
"version": "v3"
}
] | 2023-05-30 | [
[
"Chowdhuri",
"Abhishek",
""
],
[
"Ghosh",
"Saptaswa",
""
],
[
"Bhattacharyya",
"Arpan",
""
]
] | In this study, we review some current studies on Gravitational Lensing for black holes, mainly in the context of general relativity. We mainly focus on the analytical studies related to lensing with references to observational results. We start with reviewing lensing in spherically symmetric Schwarzschild spacetime, sh... |
1702.01536 | Tonguc Rador | Tonguc Rador | S and T Self-dualities in Dilatonic f(R) Theories | null | null | 10.1140/epjc/s10052-017-5418-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We search for theories, in general spacetime dimensions, that would
incorporate a dilaton and higher powers of the scalar Ricci curvature such that
they have exact S and/or T self-dualities. The theories we find are free of
Ostrogradsky instabilities. We also show that within the framework we are
confining ourselves ... | [
{
"created": "Mon, 6 Feb 2017 09:20:43 GMT",
"version": "v1"
}
] | 2018-01-17 | [
[
"Rador",
"Tonguc",
""
]
] | We search for theories, in general spacetime dimensions, that would incorporate a dilaton and higher powers of the scalar Ricci curvature such that they have exact S and/or T self-dualities. The theories we find are free of Ostrogradsky instabilities. We also show that within the framework we are confining ourselves a ... |
0801.4195 | Hsien-Chung Kao | Hsien-chung Kao and Dan Tomino | Quasinormal Modes of Kerr Black Holes in Four and Higher Dimensions | 14 pages, 7 figures | Phys.Rev.D77:127503,2008 | 10.1103/PhysRevD.77.127503 | null | gr-qc hep-th | null | We analytically calculate to leading order the asymptotic form of quasinormal
frequencies of Kerr black holes in four, five and seven dimensions. All the
relevant quantities can be explicitly expressed in terms of elliptical
integrals. In four dimensions, we confirm the results obtained by Keshest and
Hod by comparin... | [
{
"created": "Mon, 28 Jan 2008 06:09:02 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kao",
"Hsien-chung",
""
],
[
"Tomino",
"Dan",
""
]
] | We analytically calculate to leading order the asymptotic form of quasinormal frequencies of Kerr black holes in four, five and seven dimensions. All the relevant quantities can be explicitly expressed in terms of elliptical integrals. In four dimensions, we confirm the results obtained by Keshest and Hod by comparing ... |
1912.00090 | David Sloan | David Sloan, Konstantinos Dimopoulos, Sotirios Karamitsos | T-Model Inflation and Bouncing Cosmology | 29 pages, 7 figures | Phys. Rev. D 101, 043521 (2020) | 10.1103/PhysRevD.101.043521 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the dynamics of a closed cosmology whose matter source is that of
a conformally coupled scalar field with a broken ${\rm SO}(1,1)$ symmetry,
which correspond to the $\alpha$-attractors proposed by Linde and Kallosh.
Following a field redefinition, such models give rise to "T-model" inflationary
potentials,... | [
{
"created": "Fri, 29 Nov 2019 23:16:06 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Jan 2020 16:32:07 GMT",
"version": "v2"
}
] | 2020-02-19 | [
[
"Sloan",
"David",
""
],
[
"Dimopoulos",
"Konstantinos",
""
],
[
"Karamitsos",
"Sotirios",
""
]
] | We examine the dynamics of a closed cosmology whose matter source is that of a conformally coupled scalar field with a broken ${\rm SO}(1,1)$ symmetry, which correspond to the $\alpha$-attractors proposed by Linde and Kallosh. Following a field redefinition, such models give rise to "T-model" inflationary potentials, w... |
1407.2086 | John W. Moffat | J. W. Moffat | Quantum Gravity and the Cosmological Constant Problem | To be published in the proceedings of the First Karl Schwarzschild
Meeting at FIAS, Frankfurt am Main, Germany 22-26 July, 2014, by
Springer-Verlag | Proceedings of the 1st Karl Schwarzschild Meeting on Gravitational
Physics, Springer, 2016, p. 299 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A finite and unitary nonlocal formulation of quantum gravity is applied to
the cosmological constant problem. The entire functions in momentum space at
the graviton-standard model particle loop vertices generate an exponential
suppression of the vacuum density and the cosmological constant to produce
agreement with t... | [
{
"created": "Mon, 7 Jul 2014 19:01:13 GMT",
"version": "v1"
}
] | 2016-02-08 | [
[
"Moffat",
"J. W.",
""
]
] | A finite and unitary nonlocal formulation of quantum gravity is applied to the cosmological constant problem. The entire functions in momentum space at the graviton-standard model particle loop vertices generate an exponential suppression of the vacuum density and the cosmological constant to produce agreement with the... |
1212.3266 | Miguel Socolovsky | Miguel Socolovsky | Einstein-Cartan Theory and Gauge Symmetry | Replacement of eq.(8) in v1 by equations (5)-(9) in v2 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We argue that the non gauge invariant coupling between torsion and the
Maxwell or Yang-Mills fields in Einstein-Cartan theory can not be ignored.
Arguments based in the existence of normal frames in neighbourhoods, and an
approximation to a \delta-function, lead to gauge invariant observables.
| [
{
"created": "Thu, 13 Dec 2012 18:57:12 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Mar 2013 20:21:35 GMT",
"version": "v2"
}
] | 2013-03-11 | [
[
"Socolovsky",
"Miguel",
""
]
] | We argue that the non gauge invariant coupling between torsion and the Maxwell or Yang-Mills fields in Einstein-Cartan theory can not be ignored. Arguments based in the existence of normal frames in neighbourhoods, and an approximation to a \delta-function, lead to gauge invariant observables. |
2207.14475 | Raziyeh Zaregonbadi | Raziyeh Zaregonbadi, Nasim Saba, Mehrdad Farhoudi | Cosmic Acceleration and Geodesic Deviation in Chameleon Scalar Field
Model | 12 pages, 4 figures | Eur. Phys. J. C (2022) 82:730 | 10.1140/epjc/s10052-022-10646-w | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | While considering the chameleon scalar field model with the spatially flat
FLRW background, we investigate the late-time acceleration phase of the
universe, wherein we apply the typical potential usually used in this model.
Through setting some constraints on the free parameters of the model, we
indicate that the non... | [
{
"created": "Fri, 29 Jul 2022 04:43:10 GMT",
"version": "v1"
}
] | 2022-08-25 | [
[
"Zaregonbadi",
"Raziyeh",
""
],
[
"Saba",
"Nasim",
""
],
[
"Farhoudi",
"Mehrdad",
""
]
] | While considering the chameleon scalar field model with the spatially flat FLRW background, we investigate the late-time acceleration phase of the universe, wherein we apply the typical potential usually used in this model. Through setting some constraints on the free parameters of the model, we indicate that the non-m... |
gr-qc/9606072 | Carsten Gundlach | Carsten Gundlach and Jose M. Martin-Garcia | Charge scaling and universality in critical collapse | Revtex, 10 galley or 21 preprint pages. To be published in PRD.
Reference to verification of charge exponent (Hod and Piran, gr-qc/9606093)
added | Phys.Rev. D54 (1996) 7353-7360 | 10.1103/PhysRevD.54.7353 | LAEFF/96/14 | gr-qc | null | Consider any 1-parameter family of initial data such that data with parameter
value p > p* form black holes, and data with p < p* do not. As p -> p* from
above ("critical collapse"), the black hole mass scales as M ~ (p-p*)^gamma,
where the critical exponent gamma is the same for all such families of initial
data. So... | [
{
"created": "Wed, 26 Jun 1996 17:50:40 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Sep 1996 14:17:27 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Gundlach",
"Carsten",
""
],
[
"Martin-Garcia",
"Jose M.",
""
]
] | Consider any 1-parameter family of initial data such that data with parameter value p > p* form black holes, and data with p < p* do not. As p -> p* from above ("critical collapse"), the black hole mass scales as M ~ (p-p*)^gamma, where the critical exponent gamma is the same for all such families of initial data. So f... |
1012.3171 | Ippocratis Saltas | Ippocratis D. Saltas, Martin Kunz | Anisotropic stress and stability in modified gravity models | 15 pages, v2: Minor changes in the text, typos corrected | Phys.Rev.D83:064042,2011 | 10.1103/PhysRevD.83.064042 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of anisotropic stress of a purely geometrical origin seems to
be a characteristic of higher order gravity models, and has been suggested as a
probe to test these models observationally, for example in weak lensing
experiments. In this paper, we seek to find a class of higher order gravity
models of f(R,... | [
{
"created": "Tue, 14 Dec 2010 21:02:10 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Apr 2011 18:51:40 GMT",
"version": "v2"
}
] | 2011-05-10 | [
[
"Saltas",
"Ippocratis D.",
""
],
[
"Kunz",
"Martin",
""
]
] | The existence of anisotropic stress of a purely geometrical origin seems to be a characteristic of higher order gravity models, and has been suggested as a probe to test these models observationally, for example in weak lensing experiments. In this paper, we seek to find a class of higher order gravity models of f(R,G)... |
gr-qc/0308051 | Laszlo A. Gergely | M\'aty\'as Vas\'uth, Zolt\'an Keresztes, Andr\'as Mih\'aly, and
L\'aszl\'o \'A. Gergely | Gravitational radiation reaction in compact binary systems: Contribution
of the magnetic dipole-magnetic dipole interaction | null | Phys.Rev. D68 (2003) 124006 | 10.1103/PhysRevD.68.124006 | null | gr-qc astro-ph | null | We study the gravitational radiation reaction in compact binary systems
composed of neutron stars with spin and huge magnetic dipole moments
(magnetars). The magnetic dipole moments undergo a precessional motion about
the respective spins. At sufficiently high values of the magnetic dipole
moments, their interaction ... | [
{
"created": "Fri, 15 Aug 2003 16:17:40 GMT",
"version": "v1"
}
] | 2016-08-16 | [
[
"Vasúth",
"Mátyás",
""
],
[
"Keresztes",
"Zoltán",
""
],
[
"Mihály",
"András",
""
],
[
"Gergely",
"László Á.",
""
]
] | We study the gravitational radiation reaction in compact binary systems composed of neutron stars with spin and huge magnetic dipole moments (magnetars). The magnetic dipole moments undergo a precessional motion about the respective spins. At sufficiently high values of the magnetic dipole moments, their interaction ge... |
1310.7309 | Joel Weisberg | Joel M. Weisberg | Using Binary Pulsars to Test Lorentz Symmetry in the Gravitational
Sector | To be published in Proceedings of Sixth Meeting on CPT and Lorentz
Symmetry, Bloomington, Indiana, June 17-21, 2013 | null | 10.1142/9789814566438_0006 | null | gr-qc astro-ph.HE astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I review some of the major developments in the theoretical background and
experimental uses of binary pulsars to explore local Lorentz invariance in the
gravitational sector and its possible violation.
| [
{
"created": "Mon, 28 Oct 2013 04:03:13 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Weisberg",
"Joel M.",
""
]
] | I review some of the major developments in the theoretical background and experimental uses of binary pulsars to explore local Lorentz invariance in the gravitational sector and its possible violation. |
2209.01652 | Farruh Atamurotov | Farruh Atamurotov, Ibrar Hussain, G. Mustafa, Kimet Jusufi | Shadow and quasinormal modes of the Kerr-Newman-Kiselev-Letelier black
hole | 16 pages, 7 figures, 2 tables. Accepted for publication in Eur. Phys.
J. C | null | 10.1140/epjc/s10052-022-10782-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the null geodesics and the shadow cast by the
Kerr-Newman-Kiselev-Letelier (KNKL) black hole for the equation of state
parameter $\omega_q=-2/3$ and for different values of the spacetime parameters,
including the quintessence parameter $\gamma$, the cloud of string (CS)
parameter $b$, the spin paramete... | [
{
"created": "Sun, 4 Sep 2022 16:05:28 GMT",
"version": "v1"
}
] | 2022-10-19 | [
[
"Atamurotov",
"Farruh",
""
],
[
"Hussain",
"Ibrar",
""
],
[
"Mustafa",
"G.",
""
],
[
"Jusufi",
"Kimet",
""
]
] | We investigate the null geodesics and the shadow cast by the Kerr-Newman-Kiselev-Letelier (KNKL) black hole for the equation of state parameter $\omega_q=-2/3$ and for different values of the spacetime parameters, including the quintessence parameter $\gamma$, the cloud of string (CS) parameter $b$, the spin parameter ... |
1110.6350 | Bibekananda Nayak jr | Debabrata Dwivedee, Bibekananda Nayak, Mubasher Jamil and Lambodar
Prasad Singh | Evolution of Primordial Black Holes in Loop Quantum Gravity | 8 pages, 1 figure | J. Astrophys. Astr. (2014) 35, 97-106 | 10.1007/s12036-014-9276-y | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we study the evolution of Primordial Black Holes within the
context of Loop Quantum Gravity. First we calculate the scale factor and energy
density of the universe for different cosmic era and then taking these as
inputs we study evolution of primordial black holes. From our estimation it is
found that ... | [
{
"created": "Fri, 28 Oct 2011 14:39:05 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Nov 2011 07:18:34 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"Dwivedee",
"Debabrata",
""
],
[
"Nayak",
"Bibekananda",
""
],
[
"Jamil",
"Mubasher",
""
],
[
"Singh",
"Lambodar Prasad",
""
]
] | In this work, we study the evolution of Primordial Black Holes within the context of Loop Quantum Gravity. First we calculate the scale factor and energy density of the universe for different cosmic era and then taking these as inputs we study evolution of primordial black holes. From our estimation it is found that ac... |
gr-qc/0506118 | Thomas P. Kling | Thomas P. Kling and Brian Keith | The Bianchi identity and weak gravitational lensing | accepted to CQG | Class.Quant.Grav. 22 (2005) 2921-2932 | 10.1088/0264-9381/22/14/005 | null | gr-qc astro-ph | null | We consider the Bianchi identity as a field equation for the distortion of
the shapes of images produced by weak gravitational lensing. Using the spin
coefficient formalism of Newman and Penrose [1962], we show that certain
complex components of the Weyl and Ricci curvature tensors are directly related
to fundamental... | [
{
"created": "Fri, 24 Jun 2005 00:32:29 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Kling",
"Thomas P.",
""
],
[
"Keith",
"Brian",
""
]
] | We consider the Bianchi identity as a field equation for the distortion of the shapes of images produced by weak gravitational lensing. Using the spin coefficient formalism of Newman and Penrose [1962], we show that certain complex components of the Weyl and Ricci curvature tensors are directly related to fundamental o... |
gr-qc/0504107 | John Hartnett | Moshe Carmeli, John G. Hartnett, Firmin J. Oliveira | On the anomalous acceleration of Pioneer spacecraft | 3 pages, accepted in Int. J. Theor. Phys | Int.J.Theor.Phys. 45 (2006) 1074-1078 | 10.1007/s10773-006-9103-6 | null | gr-qc | null | The anomalous acceleration of Pioneer 10 and 11 spacecraft of (8.74 \pm 1.33)
\times 10^{-8} cm. s^{-2} fits with a theoretical prediction of a minimal
acceleration in nature of about 7.61 \times 10^{-8} cm. s^{-2}
| [
{
"created": "Fri, 22 Apr 2005 07:38:50 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Feb 2006 04:41:42 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Carmeli",
"Moshe",
""
],
[
"Hartnett",
"John G.",
""
],
[
"Oliveira",
"Firmin J.",
""
]
] | The anomalous acceleration of Pioneer 10 and 11 spacecraft of (8.74 \pm 1.33) \times 10^{-8} cm. s^{-2} fits with a theoretical prediction of a minimal acceleration in nature of about 7.61 \times 10^{-8} cm. s^{-2} |
1902.09684 | Miguel Cruz | Miguel Cruz, Samuel Lepe and Gerardo Morales-Navarrete | Qualitative description of the universe in the interacting fluids scheme | Accepted version in Nucl. Phys. B, 13 pages, 1 figure | Nucl. Phys. B 943, 114623 (2019) | 10.1016/j.nuclphysb.2019.114623 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we present a qualitative description of the evolution of a
curved universe when we consider the interacting scheme for the constituents of
the dark sector. The resulting dynamics can be modeled by a set of
Lotka-Volterra type equations. For this model a future singularity is allowed,
therefore the cyclic... | [
{
"created": "Tue, 26 Feb 2019 01:12:08 GMT",
"version": "v1"
},
{
"created": "Thu, 2 May 2019 01:44:02 GMT",
"version": "v2"
}
] | 2019-05-03 | [
[
"Cruz",
"Miguel",
""
],
[
"Lepe",
"Samuel",
""
],
[
"Morales-Navarrete",
"Gerardo",
""
]
] | In this work we present a qualitative description of the evolution of a curved universe when we consider the interacting scheme for the constituents of the dark sector. The resulting dynamics can be modeled by a set of Lotka-Volterra type equations. For this model a future singularity is allowed, therefore the cyclic b... |
gr-qc/9609062 | Leonid Grishchuk | L. P. Grishchuk | The Implications of the Microwave Background Anisotropies for
Laser-Interferometer-Tested Gravitational Waves | revised, corrected, and slightly expanded version to be published in
Classical and Quantum Gravity; 22 pages, 1 Postscript figure, Latex; Based on
a talk presented at the First Internationsl LISA Symposium, 9 - 12 July 1996,
RAL, UK | Class.Quant.Grav. 14 (1997) 1445-1454 | 10.1088/0264-9381/14/6/009 | null | gr-qc astro-ph hep-ph | null | The observed microwave background anisotropies in combination with the theory
of quantum mechanically generated cosmological perturbations predict a well
measurable amount of relic gravitational waves in the frequency intervals
tested by LISA and ground-based laser interferometers.
| [
{
"created": "Fri, 27 Sep 1996 09:16:00 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Mar 1997 16:08:10 GMT",
"version": "v2"
}
] | 2009-10-28 | [
[
"Grishchuk",
"L. P.",
""
]
] | The observed microwave background anisotropies in combination with the theory of quantum mechanically generated cosmological perturbations predict a well measurable amount of relic gravitational waves in the frequency intervals tested by LISA and ground-based laser interferometers. |
1010.2553 | Marc Favata | Marc Favata | Conservative corrections to the innermost stable circular orbit (ISCO)
of a Kerr black hole: a new gauge-invariant post-Newtonian ISCO condition,
and the ISCO shift due to test-particle spin and the gravitational self-force | 17 pages, 2 figures, 1 table. v2: references added; minor changes to
match published version | Phys.Rev.D83:024028,2011 | 10.1103/PhysRevD.83.024028 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The innermost stable circular orbit (ISCO) delimits the transition from
circular orbits to those that plunge into a black hole. In the test-mass limit,
well-defined ISCO conditions exist for the Kerr and Schwarzschild spacetimes.
In the finite-mass case, there are a large variety of ways to define an ISCO in
a post-N... | [
{
"created": "Wed, 13 Oct 2010 01:24:57 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Jan 2011 05:51:30 GMT",
"version": "v2"
}
] | 2011-01-25 | [
[
"Favata",
"Marc",
""
]
] | The innermost stable circular orbit (ISCO) delimits the transition from circular orbits to those that plunge into a black hole. In the test-mass limit, well-defined ISCO conditions exist for the Kerr and Schwarzschild spacetimes. In the finite-mass case, there are a large variety of ways to define an ISCO in a post-New... |
1201.4649 | Arpan Saha | Arpan Saha, Banibrata Mukhopadhyay | Gauging gravity with SO(1,3) for spin-1/2 particles | 21 LaTeX pages | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate, by analogy with electromagnetism, that the geometric content
in the theory of gravity is an indirect consequence of the fact that the gauge
group in question is the Lorentz group SO(1,3). We hence construct field
equations for gravity and a spin-1/2 particle in a gravitational field based on
gauge con... | [
{
"created": "Mon, 23 Jan 2012 08:48:07 GMT",
"version": "v1"
}
] | 2012-01-24 | [
[
"Saha",
"Arpan",
""
],
[
"Mukhopadhyay",
"Banibrata",
""
]
] | We demonstrate, by analogy with electromagnetism, that the geometric content in the theory of gravity is an indirect consequence of the fact that the gauge group in question is the Lorentz group SO(1,3). We hence construct field equations for gravity and a spin-1/2 particle in a gravitational field based on gauge consi... |
1508.01981 | Jia-An Lu | Jia-An Lu | Energy, momentum and angular momentum conservations in de Sitter gravity | 13 pages, title changed | Class. Quantum Grav. 33 (2016) 155009 | 10.1088/0264-9381/33/15/155009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In de Sitter (dS) gravity, where gravity is a gauge field introduced to
realize the local dS invariance of the matter field, two kinds of conservation
laws are derived. The first kind is a differential equation for a dS-covariant
current, which unites the canonical energy-momentum (EM) and angular momentum
(AM) tenso... | [
{
"created": "Sun, 9 Aug 2015 03:18:27 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Jul 2016 06:20:36 GMT",
"version": "v2"
}
] | 2016-07-08 | [
[
"Lu",
"Jia-An",
""
]
] | In de Sitter (dS) gravity, where gravity is a gauge field introduced to realize the local dS invariance of the matter field, two kinds of conservation laws are derived. The first kind is a differential equation for a dS-covariant current, which unites the canonical energy-momentum (EM) and angular momentum (AM) tensors... |
1904.07652 | Rahul Kumar | Rahul Kumar, Balendra Pratap Singh, and Sushant G. Ghosh | Shadow and deflection angle of rotating black hole in asymptotically
safe gravity | 16 Pages, 9 figures, and 2 tables. Matched with the published version | Annals Phys. 420, 168252 (2020) | 10.1016/j.aop.2020.168252 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically investigate the shadows cast by rotating black holes in the
asymptotically safe gravity (ASG) by deriving complete null geodesics and
observables using the Hamilton-Jacobi equation and Carter separable method. It
turns out that the apparent shape and size of the shadow depend on the ASG
parameters ($\... | [
{
"created": "Tue, 16 Apr 2019 13:26:17 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Jul 2020 06:01:53 GMT",
"version": "v2"
}
] | 2020-07-13 | [
[
"Kumar",
"Rahul",
""
],
[
"Singh",
"Balendra Pratap",
""
],
[
"Ghosh",
"Sushant G.",
""
]
] | We analytically investigate the shadows cast by rotating black holes in the asymptotically safe gravity (ASG) by deriving complete null geodesics and observables using the Hamilton-Jacobi equation and Carter separable method. It turns out that the apparent shape and size of the shadow depend on the ASG parameters ($\ze... |
2307.03225 | Carlo Musolino | Carlo Musolino, Christian Ecker, Luciano Rezzolla | On the maximum mass and oblateness of rotating neutron stars with
generic equations of state | null | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | A considerable effort has been dedicated recently to the construction of
generic equations of state (EOSs) for matter in neutron stars. The advantage of
these approaches is that they can provide model-independent information on the
interior structure and global properties of neutron stars. Making use of more
than $10... | [
{
"created": "Thu, 6 Jul 2023 18:00:01 GMT",
"version": "v1"
}
] | 2023-07-10 | [
[
"Musolino",
"Carlo",
""
],
[
"Ecker",
"Christian",
""
],
[
"Rezzolla",
"Luciano",
""
]
] | A considerable effort has been dedicated recently to the construction of generic equations of state (EOSs) for matter in neutron stars. The advantage of these approaches is that they can provide model-independent information on the interior structure and global properties of neutron stars. Making use of more than $10^6... |
2402.14908 | Jorma Louko | Mar\'ia R. Preciado-Rivas, Manar Naeem, Robert B. Mann, Jorma Louko | More Excitement Across the Horizon | 15 pages, 12 figures; RevTeX4-2. v3: references and clarifications
added | Phys. Rev. D 110, 025002 (2024) | 10.1103/PhysRevD.110.025002 | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | An Unruh-DeWitt (UDW) detector falling radially into a four-dimensional
Schwarzschild black hole, coupled linearly to a massless scalar field that has
been prepared in the Hartle-Hawking or Unruh state, has recently been shown to
exhibit a local extremum in its transition probability near the black hole
horizon [K.K.... | [
{
"created": "Thu, 22 Feb 2024 19:00:01 GMT",
"version": "v1"
},
{
"created": "Sun, 10 Mar 2024 17:30:39 GMT",
"version": "v2"
},
{
"created": "Tue, 9 Jul 2024 22:24:55 GMT",
"version": "v3"
}
] | 2024-07-11 | [
[
"Preciado-Rivas",
"María R.",
""
],
[
"Naeem",
"Manar",
""
],
[
"Mann",
"Robert B.",
""
],
[
"Louko",
"Jorma",
""
]
] | An Unruh-DeWitt (UDW) detector falling radially into a four-dimensional Schwarzschild black hole, coupled linearly to a massless scalar field that has been prepared in the Hartle-Hawking or Unruh state, has recently been shown to exhibit a local extremum in its transition probability near the black hole horizon [K.K. N... |
gr-qc/0110070 | Claus Kiefer | Claus Kiefer | Hawking radiation from decoherence | 6 pages, to appear in Class. Quantum Grav | Class.Quant.Grav.18:L151,2001 | 10.1088/0264-9381/18/22/101 | null | gr-qc hep-th quant-ph | null | It is argued that the thermal nature of Hawking radiation arises solely due
to decoherence. Thereby any information-loss paradox is avoided because for
closed systems pure states remain pure. The discussion is performed for a
massless scalar field in the background of a Schwarzschild black hole, but the
arguments sho... | [
{
"created": "Mon, 15 Oct 2001 09:41:37 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Kiefer",
"Claus",
""
]
] | It is argued that the thermal nature of Hawking radiation arises solely due to decoherence. Thereby any information-loss paradox is avoided because for closed systems pure states remain pure. The discussion is performed for a massless scalar field in the background of a Schwarzschild black hole, but the arguments shoul... |
gr-qc/9410026 | Jean-Bruno Erismann | V.M. Villalba | Quantum Effects Associated with an Electrically Neutral Massless
Particle in a Bertotti-Robinson Universe | 8 pages,CPT-94/P. 3081,LaTex | Mod.Phys.Lett. A9 (1994) 3185-3192 | 10.1142/S0217732394003002 | null | gr-qc | null | In the present article we obtain, by separation of variables, an exact
solution to the Dirac equation with anomalous momentum for an electrically
neutral massless particle in a Bertotti-Robinson universe. We discuss the
phenomenom of particle creation in this model.
| [
{
"created": "Wed, 19 Oct 1994 08:27:25 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Villalba",
"V. M.",
""
]
] | In the present article we obtain, by separation of variables, an exact solution to the Dirac equation with anomalous momentum for an electrically neutral massless particle in a Bertotti-Robinson universe. We discuss the phenomenom of particle creation in this model. |
gr-qc/0210034 | Serge Winitzki | J. Hong, A. Vilenkin, and S. Winitzki | Particle creation in a tunneling universe | 21 pages, 3 embedded figures, RevTeX4 | Phys.Rev. D68 (2003) 023520 | 10.1103/PhysRevD.68.023520 | null | gr-qc astro-ph hep-th | null | An expanding closed universe filled with radiation can either recollapse or
tunnel to the regime of unbounded expansion, if the cosmological constant is
nonzero. We re-examine the question of particle creation during tunneling, with
the purpose of resolving a long-standing controversy. Using a perturbative
superspace... | [
{
"created": "Thu, 10 Oct 2002 19:05:56 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Hong",
"J.",
""
],
[
"Vilenkin",
"A.",
""
],
[
"Winitzki",
"S.",
""
]
] | An expanding closed universe filled with radiation can either recollapse or tunnel to the regime of unbounded expansion, if the cosmological constant is nonzero. We re-examine the question of particle creation during tunneling, with the purpose of resolving a long-standing controversy. Using a perturbative superspace m... |
1808.02980 | Xiao-Xiong Zeng | Xiao-Xiong Zeng, Hong-Bo Shao, Ling Li, Xian-Ming Liu | Mutual correlation in the shock wave geometry | 10 pages | Advances in High Energy Physics,2018: 7183608 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We probe the shock wave geometry with the mutual correlation in a spherically
symmetric Reissner Nordstr\"om AdS black hole on the basis of the gauge/gravity
duality. In the static background, we find that the regions living on the
boundary of the AdS black holes are correlated provided the considered regions
on the ... | [
{
"created": "Thu, 9 Aug 2018 00:54:55 GMT",
"version": "v1"
}
] | 2018-08-10 | [
[
"Zeng",
"Xiao-Xiong",
""
],
[
"Shao",
"Hong-Bo",
""
],
[
"Li",
"Ling",
""
],
[
"Liu",
"Xian-Ming",
""
]
] | We probe the shock wave geometry with the mutual correlation in a spherically symmetric Reissner Nordstr\"om AdS black hole on the basis of the gauge/gravity duality. In the static background, we find that the regions living on the boundary of the AdS black holes are correlated provided the considered regions on the bo... |
gr-qc/0309026 | Parthasarathi Majumdar | Ashok Chatterjee and Parthasarathi Majumdar | Universal canonical black hole entropy | Revtex, 5 pages, no figures. Typos corrected and a footnote and some
references added | Phys.Rev.Lett. 92 (2004) 141301 | 10.1103/PhysRevLett.92.141301 | null | gr-qc hep-th | null | Non-rotating black holes in three and four dimensions are shown to possess a
canonical entropy obeying the Bekenstein-Hawking area law together with a
leading correction (for large horizon areas) given by the logarithm of the area
with a {\it universal} finite negative coefficient, provided one assumes that
the quant... | [
{
"created": "Thu, 4 Sep 2003 14:04:00 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Nov 2003 10:04:33 GMT",
"version": "v2"
},
{
"created": "Fri, 28 Nov 2003 06:14:16 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Chatterjee",
"Ashok",
""
],
[
"Majumdar",
"Parthasarathi",
""
]
] | Non-rotating black holes in three and four dimensions are shown to possess a canonical entropy obeying the Bekenstein-Hawking area law together with a leading correction (for large horizon areas) given by the logarithm of the area with a {\it universal} finite negative coefficient, provided one assumes that the quantum... |
0808.0949 | Viqar Husain | Viqar Husain | Critical behaviour in quantum gravitational collapse | 8 pages, 3 figures. Typos corrected -- version to appear in a special
issue of Adv. Science Lett. (Ed. M. Bojowald) | Adv. Sci. Lett. 2, 214 (2009). | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/3.0/ | We study the gravitational collapse of an inhomogeneous scalar field with
quantum gravity corrections associated with singularity avoidance. Numerical
simulations indicate that there is critical behaviour at the onset of black
hole formation as in the classical theory, but with the difference that black
holes form wi... | [
{
"created": "Thu, 7 Aug 2008 02:52:55 GMT",
"version": "v1"
},
{
"created": "Sun, 30 Nov 2008 13:16:24 GMT",
"version": "v2"
}
] | 2009-06-30 | [
[
"Husain",
"Viqar",
""
]
] | We study the gravitational collapse of an inhomogeneous scalar field with quantum gravity corrections associated with singularity avoidance. Numerical simulations indicate that there is critical behaviour at the onset of black hole formation as in the classical theory, but with the difference that black holes form with... |
1911.10918 | Alessandro Tronconi | A. Y. Kamenshchik, A. Tronconi, G. Venturi | Quantum Cosmology and the Inflationary Spectra from a Non-Minimally
Coupled Inflaton | 24 pages, no figures | Phys. Rev. D 101, 023534 (2020) | 10.1103/PhysRevD.101.023534 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the quantum gravitational corrections to the Mukhanov-Sasaki
equation obtained by the canonical quantization of the inflaton-gravity system.
Our approach, which is based on the Born-Oppenheimer decomposition of the
resulting Wheeler-DeWitt equation, was previously applied to a minimally
coupled inflaton.... | [
{
"created": "Mon, 25 Nov 2019 13:52:30 GMT",
"version": "v1"
}
] | 2020-02-05 | [
[
"Kamenshchik",
"A. Y.",
""
],
[
"Tronconi",
"A.",
""
],
[
"Venturi",
"G.",
""
]
] | We calculate the quantum gravitational corrections to the Mukhanov-Sasaki equation obtained by the canonical quantization of the inflaton-gravity system. Our approach, which is based on the Born-Oppenheimer decomposition of the resulting Wheeler-DeWitt equation, was previously applied to a minimally coupled inflaton. I... |
1101.5585 | Daniele Pranzetti | Daniele Pranzetti | 2+1 gravity with positive cosmological constant in LQG: a proposal for
the physical state | 17 pages; minor changes, presentation improved. Version accepted for
publication in CQG | Class.Quant.Grav. 28 (2011) 225025 | 10.1088/0264-9381/28/22/225025 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, I investigate the possible quantization, in the context of
LQG, of three dimensional gravity in the case of positive cosmological constant
{\Lambda} and try to make contact with alternative quantization approaches
already existing in the literature. Due to the appearance of an anomaly in the
constraint... | [
{
"created": "Fri, 28 Jan 2011 17:36:06 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Oct 2011 15:37:16 GMT",
"version": "v2"
}
] | 2012-08-15 | [
[
"Pranzetti",
"Daniele",
""
]
] | In this paper, I investigate the possible quantization, in the context of LQG, of three dimensional gravity in the case of positive cosmological constant {\Lambda} and try to make contact with alternative quantization approaches already existing in the literature. Due to the appearance of an anomaly in the constraints ... |
2005.06809 | John Barrow | John D. Barrow | Maximum Force and Naked Singularities in Higher Dimensions | 6 pages, no figures. Essay prepared for the Gravity Research
Foundation | null | 10.1142/S0218271820430087 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the existence of maximum forces in 3+1 dimensional spacetimes and
show that the existence of a mass-independent maximum force does not occur in
general relativity in spaces of more than three dimensions. Instead, the
maximum force increases with the masses, M, of merging objects as M to the
power (N-3)/(N-... | [
{
"created": "Thu, 14 May 2020 08:40:31 GMT",
"version": "v1"
}
] | 2021-02-03 | [
[
"Barrow",
"John D.",
""
]
] | We discuss the existence of maximum forces in 3+1 dimensional spacetimes and show that the existence of a mass-independent maximum force does not occur in general relativity in spaces of more than three dimensions. Instead, the maximum force increases with the masses, M, of merging objects as M to the power (N-3)/(N-2)... |
1201.4521 | P.A. Gonzalez | P. A. Gonzalez, Joel Saavedra and Yerko Vasquez | Quasinormal modes and Stability Analysis for 4-dimensional Lifshitz
Black Hole | 7 pages, 2 figures. arXiv admin note: text overlap with
arXiv:1205.0582 | null | 10.1142/S021827181250054X | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Lifshitz black hole in 4-dimensions with dynamical exponent z=2
and we calculate analytically the quasinormal modes of scalar perturbations.
These quasinormal modes allows to study the stability of the Lifshitz black
hole and we have obtained that Lifshitz black hole is stable.
| [
{
"created": "Sun, 22 Jan 2012 01:26:37 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Feb 2012 05:25:25 GMT",
"version": "v2"
},
{
"created": "Thu, 10 May 2012 01:57:21 GMT",
"version": "v3"
}
] | 2015-06-03 | [
[
"Gonzalez",
"P. A.",
""
],
[
"Saavedra",
"Joel",
""
],
[
"Vasquez",
"Yerko",
""
]
] | We study the Lifshitz black hole in 4-dimensions with dynamical exponent z=2 and we calculate analytically the quasinormal modes of scalar perturbations. These quasinormal modes allows to study the stability of the Lifshitz black hole and we have obtained that Lifshitz black hole is stable. |
2108.08967 | Zhen Zhong | Minyong Guo, Zhen Zhong, Jinguang Wang, Sijie Gao | Light rings and long-lived modes in quasi-black hole spacetimes | matched version in prd | null | 10.1103/PhysRevD.105.024049 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has been argued that ultracompact objects, which possess light rings but
no horizons, may be unstable against gravitational perturbations. To test this
conjecture, we revisit the quasi-black hole solutions, a family of horizonless
spacetimes whose limit is the extremal Reissner-Nordstr\"om black hole. We find
a cr... | [
{
"created": "Fri, 20 Aug 2021 01:56:42 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Jan 2022 16:35:27 GMT",
"version": "v2"
}
] | 2022-01-24 | [
[
"Guo",
"Minyong",
""
],
[
"Zhong",
"Zhen",
""
],
[
"Wang",
"Jinguang",
""
],
[
"Gao",
"Sijie",
""
]
] | It has been argued that ultracompact objects, which possess light rings but no horizons, may be unstable against gravitational perturbations. To test this conjecture, we revisit the quasi-black hole solutions, a family of horizonless spacetimes whose limit is the extremal Reissner-Nordstr\"om black hole. We find a crit... |
gr-qc/9610060 | Takahiro Tanaka | Takahiro Tanaka and Misao Sasaki | Quantized gravitational waves in the Milne universe | 26 pages, 1 figure, revtex. submitted to Phys. Rev. D15 | Phys.Rev.D55:6061-6080,1997 | 10.1103/PhysRevD.55.6061 | OU-TAP 45 | gr-qc | null | The quantization of gravitational waves in the Milne universe is discussed.
The relation between positive frequency functions of the gravitational waves in
the Milne universe and those in the Minkowski universe is clarified.
Implications to the one-bubble open inflation scenario are also discussed.
| [
{
"created": "Fri, 25 Oct 1996 09:26:51 GMT",
"version": "v1"
}
] | 2009-10-09 | [
[
"Tanaka",
"Takahiro",
""
],
[
"Sasaki",
"Misao",
""
]
] | The quantization of gravitational waves in the Milne universe is discussed. The relation between positive frequency functions of the gravitational waves in the Milne universe and those in the Minkowski universe is clarified. Implications to the one-bubble open inflation scenario are also discussed. |
0805.1108 | J. Ponce de Leon | J. Ponce de Leon | Self-similar cosmologies in 5D: spatially flat anisotropic models | Typos corrected. Minor editorial changes and additions in the
Introduction and Summary sections | Int.J.Mod.Phys.D18:743-762,2009 | 10.1142/S021827180901473X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of theories of Kaluza-Klein type, with a large extra
dimension, we study self-similar cosmological models in 5D that are
homogeneous, anisotropic and spatially flat. The "ladder" to go between the
physics in 5D and 4D is provided by Campbell-Maagard's embedding theorems. We
show that the 5-dimensional ... | [
{
"created": "Thu, 8 May 2008 06:21:28 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Jul 2008 13:16:23 GMT",
"version": "v2"
}
] | 2009-07-22 | [
[
"de Leon",
"J. Ponce",
""
]
] | In the context of theories of Kaluza-Klein type, with a large extra dimension, we study self-similar cosmological models in 5D that are homogeneous, anisotropic and spatially flat. The "ladder" to go between the physics in 5D and 4D is provided by Campbell-Maagard's embedding theorems. We show that the 5-dimensional fi... |
1912.12546 | Nat\'alia Ten\'orio Maia | Adam K. Leibovich, Nat\'alia T. Maia, Ira Z. Rothstein, Zixin Yang | Second post-Newtonian order radiative dynamics of inspiralling compact
binaries in the Effective Field Theory approach | 28 pages, 17 figures | Phys. Rev. D 101, 084058 (2020) | 10.1103/PhysRevD.101.084058 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the Effective Field Theory (EFT) framework to compute the mass
quadrupole moment, the equation of motion, and the power loss of inspiralling
compact binaries at the second order in the Post-Newtonian (PN) approximation.
We present expressions for the stress-energy pseudo-tensor components of the
binary system ... | [
{
"created": "Sat, 28 Dec 2019 23:50:13 GMT",
"version": "v1"
}
] | 2020-05-06 | [
[
"Leibovich",
"Adam K.",
""
],
[
"Maia",
"Natália T.",
""
],
[
"Rothstein",
"Ira Z.",
""
],
[
"Yang",
"Zixin",
""
]
] | We use the Effective Field Theory (EFT) framework to compute the mass quadrupole moment, the equation of motion, and the power loss of inspiralling compact binaries at the second order in the Post-Newtonian (PN) approximation. We present expressions for the stress-energy pseudo-tensor components of the binary system in... |
1308.5789 | Kazuharu Bamba | Kazuharu Bamba, Sergei D. Odintsov and Diego S\'aez-G\'omez | Conformal symmetry and accelerating cosmology in teleparallel gravity | 13 pages, no figure, version accepted for publication in Physical
Review D | Physical Review D 88, 084042 (2013) | 10.1103/PhysRevD.88.084042 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss conformal issues of pure and extended teleparallel gravity. In
particular, we present formulations of conformal transformation in teleparallel
gravity. Furthermore, we propose conformal scalar and gauge field theories in
teleparallel gravity and study conformal torsion gravity. We explicitly
demonstrate th... | [
{
"created": "Tue, 27 Aug 2013 08:24:41 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Oct 2013 00:41:34 GMT",
"version": "v2"
}
] | 2013-11-19 | [
[
"Bamba",
"Kazuharu",
""
],
[
"Odintsov",
"Sergei D.",
""
],
[
"Sáez-Gómez",
"Diego",
""
]
] | We discuss conformal issues of pure and extended teleparallel gravity. In particular, we present formulations of conformal transformation in teleparallel gravity. Furthermore, we propose conformal scalar and gauge field theories in teleparallel gravity and study conformal torsion gravity. We explicitly demonstrate that... |
1408.2652 | Inyong Cho | Inyong Cho and Naveen K. Singh | Tensor-to-Scalar Ratio in Eddington-inspired Born-Infeld Inflation | 9 pages. revised version to appear in EPJC, with minor typo
corrections. arXiv admin note: text overlap with arXiv:1404.6081 | null | 10.1140/epjc/s10052-014-3155-1 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the scalar perturbation of the inflation model driven by a
massive-scalar field in Eddington-inspired Born-Infeld gravity. We focus on the
perturbation at the attractor stage in which the first and the second slow-roll
conditions are satisfied. The scalar perturbation exhibits the corrections to
the ch... | [
{
"created": "Tue, 12 Aug 2014 08:19:33 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Nov 2014 08:09:14 GMT",
"version": "v2"
}
] | 2014-11-19 | [
[
"Cho",
"Inyong",
""
],
[
"Singh",
"Naveen K.",
""
]
] | We investigate the scalar perturbation of the inflation model driven by a massive-scalar field in Eddington-inspired Born-Infeld gravity. We focus on the perturbation at the attractor stage in which the first and the second slow-roll conditions are satisfied. The scalar perturbation exhibits the corrections to the chao... |
1302.4499 | Kent Yagi | Kent Yagi, Nicolas Yunes | I-Love-Q | 6 pages, 3 figures; Quark-star Love number calculations corrected.
The quark-star I-Love-Q relations now lie on top of the neutron-star ones | Science 341, 365 (2013) | 10.1126/science.1236462 | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Neutron stars and quark stars are not only characterized by their mass and
radius, but also by how fast they spin, through their moment of inertia, and
how much they can be deformed, through their Love number and quadrupole moment.
These depend sensitively on the star's internal structure, and thus on unknown
nuclear... | [
{
"created": "Tue, 19 Feb 2013 01:19:43 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Sep 2013 03:30:15 GMT",
"version": "v2"
},
{
"created": "Mon, 18 Nov 2013 18:29:02 GMT",
"version": "v3"
}
] | 2013-11-19 | [
[
"Yagi",
"Kent",
""
],
[
"Yunes",
"Nicolas",
""
]
] | Neutron stars and quark stars are not only characterized by their mass and radius, but also by how fast they spin, through their moment of inertia, and how much they can be deformed, through their Love number and quadrupole moment. These depend sensitively on the star's internal structure, and thus on unknown nuclear p... |
0805.4554 | Kuriakose Palathinkal | P.I.Kuriakose and V.C.Kuriakose | Static Black Hole dressed with a massive Scalar field | 13 pages, 4 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A four-dimensional static black hole solution of Einstein equation
conformally coupled to a massive and self interacting scalar field is obtained.
A nontrivial scalar solution proposes a weak scalar hair. A dressed black hole
shows a trace of scalar charge in the metric signalling the presence of scalar
hair. A numbe... | [
{
"created": "Thu, 29 May 2008 14:21:21 GMT",
"version": "v1"
}
] | 2008-05-30 | [
[
"Kuriakose",
"P. I.",
""
],
[
"Kuriakose",
"V. C.",
""
]
] | A four-dimensional static black hole solution of Einstein equation conformally coupled to a massive and self interacting scalar field is obtained. A nontrivial scalar solution proposes a weak scalar hair. A dressed black hole shows a trace of scalar charge in the metric signalling the presence of scalar hair. A number ... |
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