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
values | license stringclasses 9
values | orig_abstract stringlengths 24 1.95k | versions listlengths 1 30 | update_date stringlengths 10 10 | authors_parsed listlengths 1 1.74k | abstract stringlengths 21 1.95k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/9811038 | Marcelo Jose Reboucas | G.I. Gomero, A.F.F. Teixeira, M.J. Reboucas, A. Bernui | Spikes in Cosmic Crystallography | 25 pages, LaTeX2e. References updated. To appear in Int. J. Mod.
Phys. D (2002) in the present form | Int.J.Mod.Phys. D11 (2002) 869-892 | 10.1142/S0218271802002074 | null | gr-qc astro-ph hep-ph | null | If the universe is multiply connected and small the sky shows multiple images
of cosmic objects, correlated by the covering group of the 3-manifold used to
model it. These correlations were originally thought to manifest as spikes in
pair separation histograms (PSH) built from suitable catalogues. Using
probability t... | [
{
"created": "Wed, 11 Nov 1998 20:54:33 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Apr 1999 01:02:46 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Feb 2000 23:28:31 GMT",
"version": "v3"
},
{
"created": "Thu, 21 Feb 2002 02:33:04 GMT",
"version": "v4"
}
] | 2009-10-31 | [
[
"Gomero",
"G. I.",
""
],
[
"Teixeira",
"A. F. F.",
""
],
[
"Reboucas",
"M. J.",
""
],
[
"Bernui",
"A.",
""
]
] | If the universe is multiply connected and small the sky shows multiple images of cosmic objects, correlated by the covering group of the 3-manifold used to model it. These correlations were originally thought to manifest as spikes in pair separation histograms (PSH) built from suitable catalogues. Using probability the... |
1010.0869 | Josep M. Pons | Naresh Dadhich, Josep M. Pons | On the equivalence of the Einstein-Hilbert and the Einstein-Palatini
formulations of general relativity for an arbitrary connection | 18 pages. Slight change in the title and wording of some sections to
emphasize the main results. References added. Matches published version | Gen.Rel.Grav. 44 (2012) 2337-2352 | 10.1007/s10714-012-1393-9 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the framework of the Einstein-Palatini formalism, even though the
projective transformation connecting the arbitrary connection with the Levi
Civita connection has been floating in the literature for a long time and
perhaps the result was implicitly known in the affine gravity community, yet as
far as we know Juli... | [
{
"created": "Tue, 5 Oct 2010 12:44:44 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Oct 2010 11:48:50 GMT",
"version": "v2"
},
{
"created": "Thu, 28 Jul 2011 09:11:10 GMT",
"version": "v3"
},
{
"created": "Fri, 15 Jun 2012 16:27:24 GMT",
"version": "v4"
}
] | 2015-05-20 | [
[
"Dadhich",
"Naresh",
""
],
[
"Pons",
"Josep M.",
""
]
] | In the framework of the Einstein-Palatini formalism, even though the projective transformation connecting the arbitrary connection with the Levi Civita connection has been floating in the literature for a long time and perhaps the result was implicitly known in the affine gravity community, yet as far as we know Julia ... |
gr-qc/0206088 | Zoltan Perjes | Zolt\'an Perj\'es | Fundamental equations for the gravitational and electromagnetic
perturbations of a charged black hole | 4 pages | null | null | null | gr-qc | null | A pair of wave equations is presented for the gravitational and
electromagnetic perturbations of a charged black hole. One of the equations is
uncoupled and determines the propagation of the electromagnetic perturbation.
The other is for the propagation of the shear of a principal null direction and
has a source term... | [
{
"created": "Fri, 28 Jun 2002 15:19:51 GMT",
"version": "v1"
}
] | 2016-08-16 | [
[
"Perjés",
"Zoltán",
""
]
] | A pair of wave equations is presented for the gravitational and electromagnetic perturbations of a charged black hole. One of the equations is uncoupled and determines the propagation of the electromagnetic perturbation. The other is for the propagation of the shear of a principal null direction and has a source term g... |
gr-qc/0508011 | \.Ibrahim Semiz | Ibrahim Semiz | Dyonic Kerr-Newman black holes, complex scalar field and Cosmic
Censorship | Refined emphasis on the weak cosmic censorship conjecture,
conclusions otherwise unchanged. Also, two sections merged, literature review
updated, references added, a few typos corrected | Gen.Rel.Grav.43:833-846,2011 | 10.1007/s10714-010-1108-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a gedanken experiment, in which a weak wave packet of the
complex massive scalar field interacts with a four-parameter (mass, angular
momentum, electric and magnetic charges) Kerr-Newman black hole. We show that
this interaction cannot convert an extreme the black hole into a naked
sigularity for any bla... | [
{
"created": "Tue, 2 Aug 2005 15:06:39 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Oct 2010 17:25:33 GMT",
"version": "v2"
}
] | 2011-02-23 | [
[
"Semiz",
"Ibrahim",
""
]
] | We construct a gedanken experiment, in which a weak wave packet of the complex massive scalar field interacts with a four-parameter (mass, angular momentum, electric and magnetic charges) Kerr-Newman black hole. We show that this interaction cannot convert an extreme the black hole into a naked sigularity for any black... |
1801.08084 | Bo-Qiang Ma | Haowei Xu, Bo-Qiang Ma | Regularity of high energy photon events from gamma ray bursts | 15 latex pages, 9 figures | JCAP 1801 (2018) 050 | 10.1088/1475-7516/2018/01/050 | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effect of Quantum Gravity (QG) may bring a tiny light speed variation as
$v(E)=c(1-E/E_{\rm LV})$, where $E$ is the photon energy and $E_{\rm LV}$ is a
Lorentz violation scale. A remarkable regularity was suggested in previous
studies to look for the light speed variation from high energy photon events of
Gamma R... | [
{
"created": "Wed, 24 Jan 2018 17:20:10 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Feb 2018 01:29:33 GMT",
"version": "v2"
}
] | 2018-02-07 | [
[
"Xu",
"Haowei",
""
],
[
"Ma",
"Bo-Qiang",
""
]
] | The effect of Quantum Gravity (QG) may bring a tiny light speed variation as $v(E)=c(1-E/E_{\rm LV})$, where $E$ is the photon energy and $E_{\rm LV}$ is a Lorentz violation scale. A remarkable regularity was suggested in previous studies to look for the light speed variation from high energy photon events of Gamma Ray... |
2009.02167 | Abraao Capistrano | Abra\~ao J. S. Capistrano, Lu\'is A. Cabral, Jos\'e A. P. F. Mar\~ao,
Carlos H. Coimbra-Ara\'ujo | Linear Nash-Greene fluctuations on the evolution of $S_8$ and $H_0$
tensions | Update title, corrected typos and figures, new results. To appear in
EPJC | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the perturbation equations in an embedded four space-time from the
linear Nash-Greene fluctuations of background metric. In the context of a
five-dimensional bulk, we show that the cosmological perturbations are only
propagated by the gravitational tensorial field equation. In Newtonian
conformal gauge, we... | [
{
"created": "Thu, 3 Sep 2020 14:42:17 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Mar 2021 18:43:57 GMT",
"version": "v2"
},
{
"created": "Tue, 17 May 2022 15:48:49 GMT",
"version": "v3"
}
] | 2022-05-18 | [
[
"Capistrano",
"Abraão J. S.",
""
],
[
"Cabral",
"Luís A.",
""
],
[
"Marão",
"José A. P. F.",
""
],
[
"Coimbra-Araújo",
"Carlos H.",
""
]
] | We present the perturbation equations in an embedded four space-time from the linear Nash-Greene fluctuations of background metric. In the context of a five-dimensional bulk, we show that the cosmological perturbations are only propagated by the gravitational tensorial field equation. In Newtonian conformal gauge, we s... |
gr-qc/9511018 | Cenalo Vaz | Cenalo Vaz and Louis Witten | Do Naked Singularities Form? | 7 pages (21 Kb), PHYZZX. Revised version to appear in Class. & Quant.
Grav. Letts. A discussion of the consistency of the Sine-Gordon model is
included | Class.Quant.Grav.13:L59-L65,1996 | 10.1088/0264-9381/13/5/004 | UATP-95/03 | gr-qc | null | A naked singularity is formed by the collapse of a Sine-Gordon soliton in 1+1
dimensional dilaton gravity with a negative cosmological constant. We examine
the quantum stress tensor resulting from the formation of the singularity.
Consistent boundary conditions require that the incoming soliton is accompanied
by a fl... | [
{
"created": "Sun, 5 Nov 1995 19:59:40 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Mar 1996 22:01:06 GMT",
"version": "v2"
}
] | 2010-04-06 | [
[
"Vaz",
"Cenalo",
""
],
[
"Witten",
"Louis",
""
]
] | A naked singularity is formed by the collapse of a Sine-Gordon soliton in 1+1 dimensional dilaton gravity with a negative cosmological constant. We examine the quantum stress tensor resulting from the formation of the singularity. Consistent boundary conditions require that the incoming soliton is accompanied by a flux... |
gr-qc/9310021 | null | A.Economou and C.O.Lousto | Charged Black Holes In Quadratic Theories | 11 pages, LaTeX/RevTeX3.0 | Phys.Rev. D49 (1994) 5278-5285 | 10.1103/PhysRevD.49.5278 | null | gr-qc astro-ph | null | We point out that in general the Reissner-Nordstr\"om (RN) charged black
holes of general relativity are not solutions of the four dimensional quadratic
gravitational theories. They are, e.g., exact solutions of the $R+R^2$
quadratic theory but not of a theory where a $R_{ab}R^{ab}$ term is present in
the gravitation... | [
{
"created": "Thu, 14 Oct 1993 11:52:40 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Economou",
"A.",
""
],
[
"Lousto",
"C. O.",
""
]
] | We point out that in general the Reissner-Nordstr\"om (RN) charged black holes of general relativity are not solutions of the four dimensional quadratic gravitational theories. They are, e.g., exact solutions of the $R+R^2$ quadratic theory but not of a theory where a $R_{ab}R^{ab}$ term is present in the gravitational... |
1704.02810 | Krzysztof Bolejko | Krzysztof Bolejko | Cosmological backreaction within the Szekeres model and emergence of
spatial curvature | 23 pages, 7 figures; v3 - matches published version | JCAP06(2017)025 | 10.1088/1475-7516/2017/06/025 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper discusses the phenomenon of backreaction within the Szekeres
model. Cosmological backreaction describes how the mean global evolution of the
Universe deviates from the Friedmannian evolution. The analysis is based on
models of a single cosmological environment and the global ensemble of the
Szekeres models... | [
{
"created": "Mon, 10 Apr 2017 11:37:30 GMT",
"version": "v1"
},
{
"created": "Mon, 22 May 2017 08:33:09 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Jun 2017 06:25:58 GMT",
"version": "v3"
}
] | 2017-06-15 | [
[
"Bolejko",
"Krzysztof",
""
]
] | This paper discusses the phenomenon of backreaction within the Szekeres model. Cosmological backreaction describes how the mean global evolution of the Universe deviates from the Friedmannian evolution. The analysis is based on models of a single cosmological environment and the global ensemble of the Szekeres models (... |
2404.12496 | Fabio Dahia | J. M. Rocha and F. Dahia | Constraints on extra dimensions theories from gravitational quantum
barrier experiments | null | null | null | null | gr-qc hep-ph nucl-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the quantum-bouncer experiment involving ultracold neutrons in a
braneworld scenario. Extra-dimensional theories typically predict the
strengthening of gravitational interactions over short distances. In this
paper, we specifically study the anomalous gravitational interaction between
the bouncing neutron ... | [
{
"created": "Thu, 18 Apr 2024 20:20:30 GMT",
"version": "v1"
}
] | 2024-04-22 | [
[
"Rocha",
"J. M.",
""
],
[
"Dahia",
"F.",
""
]
] | We discuss the quantum-bouncer experiment involving ultracold neutrons in a braneworld scenario. Extra-dimensional theories typically predict the strengthening of gravitational interactions over short distances. In this paper, we specifically study the anomalous gravitational interaction between the bouncing neutron an... |
1709.08807 | Naritaka Oshita | Naritaka Oshita | The generalized second law of thermodynamics and cosmological
decoherence | 5 pages, 2 figures; v2: minor corrections, references added, accepted
for publication in PRD | Phys. Rev. D 97, 023510 (2018) | 10.1103/PhysRevD.97.023510 | RESCEU-10/17 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We pointed out that the generalized second law of thermodynamics on a de
Sitter universe whose energy density stochastically fluctuates due to quantum
fluctuations is seemingly violated. We have shown that even in such a case, the
generalized second law is unviolated by taking cosmological decoherence into
account. I... | [
{
"created": "Tue, 26 Sep 2017 03:58:28 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Dec 2017 04:54:37 GMT",
"version": "v2"
}
] | 2018-01-17 | [
[
"Oshita",
"Naritaka",
""
]
] | We pointed out that the generalized second law of thermodynamics on a de Sitter universe whose energy density stochastically fluctuates due to quantum fluctuations is seemingly violated. We have shown that even in such a case, the generalized second law is unviolated by taking cosmological decoherence into account. It ... |
1002.1844 | Ralf Schutzhold | Ralf Sch\"utzhold and William G. Unruh | On Quantum Correlations across the Black Hole Horizon | 5 pages RevTeX, 1 figure | Phys.Rev.D81:124033,2010 | 10.1103/PhysRevD.81.124033 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspired by the condensed-matter analogues of black holes, we study the
quantum correlations across the event horizon reflecting the entanglement
between the outgoing particles of the Hawking radiation and their in-falling
partners. For a perfectly covariant theory, the total correlation is conserved
in time and pile... | [
{
"created": "Tue, 9 Feb 2010 12:56:10 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Schützhold",
"Ralf",
""
],
[
"Unruh",
"William G.",
""
]
] | Inspired by the condensed-matter analogues of black holes, we study the quantum correlations across the event horizon reflecting the entanglement between the outgoing particles of the Hawking radiation and their in-falling partners. For a perfectly covariant theory, the total correlation is conserved in time and piles ... |
gr-qc/0310012 | Suresh Paingalil Kunjan | P.K.Suresh | Particle creation in the oscillatory phase of inflaton | 11 pages | Int.J.Theor.Phys. 43 (2004) 425-436 | 10.1023/B:IJTP.0000028875.07382.4e | null | gr-qc | null | A thermal squeezed state representation of inflaton is constructed for a flat
Friedmann-Robertson-Walker background metric and the phenomenon of particle
creation is examined during the oscillatory phase of inflaton, in the
semiclassical theory of gravity. An approximate solution to the semiclassical
Einstein equatio... | [
{
"created": "Thu, 2 Oct 2003 10:51:09 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Suresh",
"P. K.",
""
]
] | A thermal squeezed state representation of inflaton is constructed for a flat Friedmann-Robertson-Walker background metric and the phenomenon of particle creation is examined during the oscillatory phase of inflaton, in the semiclassical theory of gravity. An approximate solution to the semiclassical Einstein equation ... |
2308.05781 | Ion I. Cotaescu | Ion I. Cotaescu | Conserved spin operator of Dirac's theory in spatially flat FLRW
spacetimes | 22 pages no figures. arXiv admin note: text overlap with
arXiv:2304.12182 | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | New conserved spin and orbital angular momentum operators of Dirac's theory
on spatially flat FLRW spacetimes are proposed generalizing thus recent results
concerning the role of Pryce's spin operator in the flat case [I. I. Cot\u
aescu, Eur. Phys. J. C (2022) 82:1073]. These operators split the conserved
total angul... | [
{
"created": "Thu, 10 Aug 2023 15:02:52 GMT",
"version": "v1"
}
] | 2023-08-14 | [
[
"Cotaescu",
"Ion I.",
""
]
] | New conserved spin and orbital angular momentum operators of Dirac's theory on spatially flat FLRW spacetimes are proposed generalizing thus recent results concerning the role of Pryce's spin operator in the flat case [I. I. Cot\u aescu, Eur. Phys. J. C (2022) 82:1073]. These operators split the conserved total angular... |
1407.3977 | David Sloan | David Sloan | Minimal Coupling and Attractors | 11 pages | Class. Quant. Grav. 31 (2014) 245015 | 10.1088/0264-9381/31/24/245015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effects of minimally coupling a gravity to matter on a flat
Robertson-Walker geometry are explored. Particular attention is paid to the
evolution of the symplectic structure and the Liouville measure it defines. We
show that the rescaling freedom introduced by choice of fiducial cell leads to
a symmetry between d... | [
{
"created": "Tue, 15 Jul 2014 13:05:30 GMT",
"version": "v1"
}
] | 2015-07-28 | [
[
"Sloan",
"David",
""
]
] | The effects of minimally coupling a gravity to matter on a flat Robertson-Walker geometry are explored. Particular attention is paid to the evolution of the symplectic structure and the Liouville measure it defines. We show that the rescaling freedom introduced by choice of fiducial cell leads to a symmetry between dyn... |
gr-qc/0012061 | Avshalom C. Elitzur | Avshalom C. Elitzur and Shahar Dolev | Indeterminism and Time Symmetry are Incompatible: Reply to Rebilas | 3 pages, 4 figures | Phys.Lett. A266 (2000) 268-270 | 10.1016/S0375-9601(00)00057-8 | null | gr-qc | null | Rebilas argues that time-reversal can occur even in an indeterministic
system. This hypothesis is untestable, hence lying beyond physics.
| [
{
"created": "Sat, 16 Dec 2000 19:59:32 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Elitzur",
"Avshalom C.",
""
],
[
"Dolev",
"Shahar",
""
]
] | Rebilas argues that time-reversal can occur even in an indeterministic system. This hypothesis is untestable, hence lying beyond physics. |
2111.00013 | Antonios Tsokaros A. | Antonios Tsokaros, Milton Ruiz, Stuart L. Shapiro, K\=oji Ury\=u | Magnetohydrodynamic simulations of self-consistent rotating neutron
stars with mixed poloidal and toroidal magnetic fields | 8 pages | null | 10.1103/PhysRevLett.128.061101 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We perform the first magnetohydrodynamic simulations in full general
relativity of self-consistent rotating neutron stars (NSs) with ultrastrong
mixed poloidal and toroidal magnetic fields. The initial uniformly rotating NS
models are computed assuming perfect conductivity, stationarity, and
axisymmetry. Although the... | [
{
"created": "Fri, 29 Oct 2021 18:00:00 GMT",
"version": "v1"
}
] | 2022-02-23 | [
[
"Tsokaros",
"Antonios",
""
],
[
"Ruiz",
"Milton",
""
],
[
"Shapiro",
"Stuart L.",
""
],
[
"Uryū",
"Kōji",
""
]
] | We perform the first magnetohydrodynamic simulations in full general relativity of self-consistent rotating neutron stars (NSs) with ultrastrong mixed poloidal and toroidal magnetic fields. The initial uniformly rotating NS models are computed assuming perfect conductivity, stationarity, and axisymmetry. Although the s... |
1508.07137 | B. S. Ratanpal | B. S. Ratanpal and Jaita Sharma | Charged Anisotropic Star on Paraboloidal Spacetime | 10 pages, 7 figures, Accepted for Publication in Pramana Journal of
Physics | Pramana Journal of Physics, V. 86, p. 527, 2016 | 10.1007/s12043-015-1036-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The charged anisotropic star on paraboloidal spacetime is reported by
choosing particular form of radial pressure and electric field intensity. The
non-singular solution of Einstein-Maxwell system of equation have been derived
and it is shown that model satisfy all the physical plausibility conditions. It
is observed... | [
{
"created": "Fri, 28 Aug 2015 09:10:21 GMT",
"version": "v1"
}
] | 2016-04-07 | [
[
"Ratanpal",
"B. S.",
""
],
[
"Sharma",
"Jaita",
""
]
] | The charged anisotropic star on paraboloidal spacetime is reported by choosing particular form of radial pressure and electric field intensity. The non-singular solution of Einstein-Maxwell system of equation have been derived and it is shown that model satisfy all the physical plausibility conditions. It is observed t... |
1902.05090 | Andrzej Rostworowski | Andrzej Rostworowski | Cosmological perturbations in the Regge-Wheeler formalism | 5 pages, no figures | Phys. Rev. D 101, 083512 (2020) | 10.1103/PhysRevD.101.083512 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study linear perturbations of the Friedmann-Lemaitre-Robertson-Walker
(FLRW) cosmological model in the Regge-Wheeler formalism which is a standard
framework to study perturbations of spherically-symmetric black holes. In
particular, we show that the general solution of linear perturbation equations
can be given in... | [
{
"created": "Wed, 13 Feb 2019 19:17:14 GMT",
"version": "v1"
}
] | 2020-04-15 | [
[
"Rostworowski",
"Andrzej",
""
]
] | We study linear perturbations of the Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmological model in the Regge-Wheeler formalism which is a standard framework to study perturbations of spherically-symmetric black holes. In particular, we show that the general solution of linear perturbation equations can be given in t... |
1309.1948 | Kourosh Nozari | Faeze Kiani and Kourosh Nozari | Energy conditions in $F(T,\Theta)$ gravity and compatibility with a
stable de Sitter solution | 16 pages, no figure, revised version with new references | Phys. Lett. B 728 (2014) 554-561 | 10.1016/j.physletb.2013.12.036 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study a new type of the modified teleparallel gravity of the form
$F(T,\,\Theta)$ in which $T$, the torsion scalar, is coupled with $\Theta$, the
trace of the stress-energy tensor. In a perturbational approach, we study the
stability of the solutions and as a special case we find a condition for
stability of the d... | [
{
"created": "Sun, 8 Sep 2013 11:54:07 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Sep 2013 12:34:13 GMT",
"version": "v2"
},
{
"created": "Sun, 15 Sep 2013 06:30:06 GMT",
"version": "v3"
}
] | 2015-06-17 | [
[
"Kiani",
"Faeze",
""
],
[
"Nozari",
"Kourosh",
""
]
] | We study a new type of the modified teleparallel gravity of the form $F(T,\,\Theta)$ in which $T$, the torsion scalar, is coupled with $\Theta$, the trace of the stress-energy tensor. In a perturbational approach, we study the stability of the solutions and as a special case we find a condition for stability of the de ... |
1001.2316 | Yosef Zlochower | Carlos O. Lousto, Hiroyuki Nakano, Yosef Zlochower, Manuela Campanelli | Intermediate Mass Ratio Black Hole Binaries: Numerical Relativity meets
Perturbation Theory | 4 pages, 5 figures, revtex4 | Phys.Rev.Lett.104:211101,2010 | 10.1103/PhysRevLett.104.211101 | null | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study black-hole binaries in the intermediate-mass-ratio regime 0.01 < q <
0.1 with a new technique that makes use of nonlinear numerical trajectories and
efficient perturbative evolutions to compute waveforms at large radii for the
leading and nonleading modes. As a proof-of-concept, we compute waveforms for
q=1/... | [
{
"created": "Wed, 13 Jan 2010 21:23:15 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Lousto",
"Carlos O.",
""
],
[
"Nakano",
"Hiroyuki",
""
],
[
"Zlochower",
"Yosef",
""
],
[
"Campanelli",
"Manuela",
""
]
] | We study black-hole binaries in the intermediate-mass-ratio regime 0.01 < q < 0.1 with a new technique that makes use of nonlinear numerical trajectories and efficient perturbative evolutions to compute waveforms at large radii for the leading and nonleading modes. As a proof-of-concept, we compute waveforms for q=1/10... |
gr-qc/0303095 | Alec Maassen van den Brink | Alec Maassen van den Brink | WKB analysis of the Regge-Wheeler equation down in the frequency plane | REVTeX4, 11pp with one EPS figure. N.B.: 'Alec' is my first, and
'Maassen van den Brink' my family name. v2: discussion and Refs. expanded;
overall grooming. v3: added calculation of the highly damped QNMs, incl. the
leading correction. v4: a few clarifications and minor corrections; final, to
appear in JMP | J.Math.Phys. 45 (2004) 327 | 10.1063/1.1626805 | null | gr-qc hep-th math-ph math.MP | null | The Regge-Wheeler equation for black-hole gravitational waves is analyzed for
large negative imaginary frequencies, leading to a calculation of the cut
strength for waves outgoing to infinity. In the--limited--region of overlap,
the results agree well with numerical findings [Class. Quantum Grav._20_, L217
(2003)]. R... | [
{
"created": "Tue, 25 Mar 2003 18:15:30 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Apr 2003 01:10:58 GMT",
"version": "v2"
},
{
"created": "Wed, 16 Apr 2003 17:00:10 GMT",
"version": "v3"
},
{
"created": "Wed, 12 Nov 2003 19:32:05 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Brink",
"Alec Maassen van den",
""
]
] | The Regge-Wheeler equation for black-hole gravitational waves is analyzed for large negative imaginary frequencies, leading to a calculation of the cut strength for waves outgoing to infinity. In the--limited--region of overlap, the results agree well with numerical findings [Class. Quantum Grav._20_, L217 (2003)]. Req... |
1308.0300 | Andrzej Banburski | Andrzej Banburski and Laurent Freidel | Snyder Momentum Space in Relative Locality | 22 pages, 6 figures, matches version accepted in PRD | Phys. Rev. D 90, 076010 (2014) | 10.1103/PhysRevD.90.076010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The standard approaches of phenomenology of Quantum Gravity have usually
explicitly violated Lorentz invariance, either in the dispersion relation or in
the addition rule for momenta. We investigate whether it is possible in 3+1
dimensions to have a non local deformation that preserves fully Lorentz
invariance, as it... | [
{
"created": "Thu, 1 Aug 2013 18:53:54 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Oct 2014 19:58:24 GMT",
"version": "v2"
}
] | 2014-11-05 | [
[
"Banburski",
"Andrzej",
""
],
[
"Freidel",
"Laurent",
""
]
] | The standard approaches of phenomenology of Quantum Gravity have usually explicitly violated Lorentz invariance, either in the dispersion relation or in the addition rule for momenta. We investigate whether it is possible in 3+1 dimensions to have a non local deformation that preserves fully Lorentz invariance, as it i... |
1802.07293 | Paolo Valtancoli | P. Valtancoli | Remarks on cosmological gravitational waves | 7 pages, no figures | null | 10.1016/j.aop.2018.05.003 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the propagation of a gravitational wave in an Ads spacetime. We find
that, in presence of the cosmological constant, the graviton mass cannot be
measured with higher precision than the square root of the cosmological
constant.
| [
{
"created": "Tue, 20 Feb 2018 19:19:45 GMT",
"version": "v1"
}
] | 2018-06-13 | [
[
"Valtancoli",
"P.",
""
]
] | We study the propagation of a gravitational wave in an Ads spacetime. We find that, in presence of the cosmological constant, the graviton mass cannot be measured with higher precision than the square root of the cosmological constant. |
1603.03749 | Gustavo Dotti | Gustavo Dotti | Black hole nonmodal linear stability: the Schwarzschild (A)dS cases | Typos corrected, changes in the Introduction (including example of
nonmodal instability) | Class.Quant.Grav. 33 (2016) 205005 | 10.1088/0264-9381/33/20/205005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nonmodal linear stability of the Schwarzschild black hole established in
Phys. Rev. Lett. 112 (2014) 191101 is generalized to the case of a nonnegative
cosmological constant $\Lambda$. Two gauge invariant combinations $G_{\pm}$ of
perturbed scalars made out of the Weyl tensor and its first covariant
derivative ar... | [
{
"created": "Fri, 11 Mar 2016 20:28:48 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Mar 2016 14:59:35 GMT",
"version": "v2"
},
{
"created": "Thu, 16 Jun 2016 16:20:27 GMT",
"version": "v3"
},
{
"created": "Tue, 6 Sep 2016 12:49:08 GMT",
"version": "v4"
},
{
"cr... | 2016-09-26 | [
[
"Dotti",
"Gustavo",
""
]
] | The nonmodal linear stability of the Schwarzschild black hole established in Phys. Rev. Lett. 112 (2014) 191101 is generalized to the case of a nonnegative cosmological constant $\Lambda$. Two gauge invariant combinations $G_{\pm}$ of perturbed scalars made out of the Weyl tensor and its first covariant derivative are ... |
1908.10872 | T. Padmanabhan | T. Padmanabhan | A Measure for Quantum Paths, Gravity and Spacetime Microstructure | Extended version of the essay which received an Honorable Mention in
the Gravity Research Foundation Essay Competition, 2019; publication in the
special issue of IJMPD; 23 pages; no figures | Int. Jour. Mod. Phys D, (2019), 1944009 | 10.1142/S0218271819440097 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The number of classical paths of a given length, connecting any two events in
a (pseudo) Riemannian spacetime is, of course, infinite. It is, however,
possible to define a useful, finite, measure $N(x_2,x_1;\sigma)$ for the
effective number of quantum paths [of length $\sigma$ connecting two events
$(x_1,x_2)$] in an... | [
{
"created": "Wed, 28 Aug 2019 18:00:04 GMT",
"version": "v1"
}
] | 2019-08-30 | [
[
"Padmanabhan",
"T.",
""
]
] | The number of classical paths of a given length, connecting any two events in a (pseudo) Riemannian spacetime is, of course, infinite. It is, however, possible to define a useful, finite, measure $N(x_2,x_1;\sigma)$ for the effective number of quantum paths [of length $\sigma$ connecting two events $(x_1,x_2)$] in an a... |
gr-qc/0003043 | Rafael D. Sorkin | Rafael D. Sorkin (Syracuse University) | Indications of causal set cosmology | 7 pages, plainTeX. Wording has been clarified further in places Text
of a talk entitled ``Causal Sets and Stochastic Spacetime'' | Int.J.Theor.Phys.39:1731-1736,2000 | 10.1023/A:1003629312096 | SU-GP-00/02-1 | gr-qc astro-ph hep-th | null | Within the context of a recently proposed family of stochastic dynamical laws
for causal sets, one can ask whether the universe might have emerged from the
quantum-gravity era with a large enough size and with sufficient homogeneity to
explain its present-day large-scale structure. In general, such a scenario
would b... | [
{
"created": "Fri, 10 Mar 2000 04:38:49 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Jul 2000 06:53:11 GMT",
"version": "v2"
},
{
"created": "Fri, 30 Nov 2001 20:09:15 GMT",
"version": "v3"
}
] | 2011-04-15 | [
[
"Sorkin",
"Rafael D.",
"",
"Syracuse University"
]
] | Within the context of a recently proposed family of stochastic dynamical laws for causal sets, one can ask whether the universe might have emerged from the quantum-gravity era with a large enough size and with sufficient homogeneity to explain its present-day large-scale structure. In general, such a scenario would be ... |
gr-qc/0102016 | Peter Dunsby | Deon Solomons, Peter Dunsby and George Ellis | Exact Inflation Braneworlds | 6 pages RevTeX. Submitted to Physical Review D | null | null | uct-cosmology-01/02 | gr-qc | null | In Randall-Sundrum type braneworld cosmologies, the dynamical equations on
the three-brane differ from the general relativity equations by terms that
carry the effects of embedding and of the free gravitational field in the
five-dimensional bulk. In a FRW ansatze for the metric, we present two methods
for deriving in... | [
{
"created": "Mon, 5 Feb 2001 12:34:06 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Solomons",
"Deon",
""
],
[
"Dunsby",
"Peter",
""
],
[
"Ellis",
"George",
""
]
] | In Randall-Sundrum type braneworld cosmologies, the dynamical equations on the three-brane differ from the general relativity equations by terms that carry the effects of embedding and of the free gravitational field in the five-dimensional bulk. In a FRW ansatze for the metric, we present two methods for deriving infl... |
2306.17262 | Henri Inchausp\'e Dr. | Lavinia Heisenberg, Henri Inchausp\'e, Dam Quang Nam, Orion Sauter,
Ricardo Waibel and Peter Wass | LISA Dynamics & Control: Closed-loop Simulation and Numerical
Demonstration of Time Delay Interferometry | 26 pages, 8 figures. Revision of Subsection VII.C, and of the
physical interpretation of the comparison between Linear and Non-linear
simulations. In addition to a few editorial improvements (rephrasings, figure
and text formatting). The dynamical models, the simulations, and the results
of the article (aside f... | null | null | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Laser Interferometer Space Antenna (LISA), space-based gravitational wave
observatory involves a complex multidimensional closed-loop dynamical system.
Its instrument performance is expected to be less efficiently isolated from
platform motion than was its simpler technological demonstrator, LISA
Pathfinder. It i... | [
{
"created": "Thu, 29 Jun 2023 19:01:49 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Aug 2023 12:56:40 GMT",
"version": "v2"
}
] | 2023-09-05 | [
[
"Heisenberg",
"Lavinia",
""
],
[
"Inchauspé",
"Henri",
""
],
[
"Nam",
"Dam Quang",
""
],
[
"Sauter",
"Orion",
""
],
[
"Waibel",
"Ricardo",
""
],
[
"Wass",
"Peter",
""
]
] | The Laser Interferometer Space Antenna (LISA), space-based gravitational wave observatory involves a complex multidimensional closed-loop dynamical system. Its instrument performance is expected to be less efficiently isolated from platform motion than was its simpler technological demonstrator, LISA Pathfinder. It is ... |
1707.09945 | Matteo Tuveri | Mariano Cadoni, Roberto Casadio, Andrea Giusti, Wolfgang M\"uck,
Matteo Tuveri | Effective Fluid Description of the Dark Universe | 13 pages, no figures. Replaced version: major revisions in the
introduction, microscopic derivation of Tully-Fisher relation using
Bose-Einstein condensate of gravitons. Some typos corrected | Phys. Lett. B 776 (2018) 242 | 10.1016/j.physletb.2017.11.058 | null | gr-qc astro-ph.CO astro-ph.GA hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose an effective anisotropic fluid description for a generic
infrared-modified theory of gravity. In our framework, the additional component
of the acceleration, commonly attributed to dark matter, is explained as a
radial pressure generated by the reaction of the dark energy fluid to the
presence of baryonic ... | [
{
"created": "Mon, 31 Jul 2017 16:33:51 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Oct 2017 13:50:03 GMT",
"version": "v2"
},
{
"created": "Tue, 5 Dec 2017 10:20:58 GMT",
"version": "v3"
}
] | 2017-12-06 | [
[
"Cadoni",
"Mariano",
""
],
[
"Casadio",
"Roberto",
""
],
[
"Giusti",
"Andrea",
""
],
[
"Mück",
"Wolfgang",
""
],
[
"Tuveri",
"Matteo",
""
]
] | We propose an effective anisotropic fluid description for a generic infrared-modified theory of gravity. In our framework, the additional component of the acceleration, commonly attributed to dark matter, is explained as a radial pressure generated by the reaction of the dark energy fluid to the presence of baryonic ma... |
2404.18128 | Christian Corda Prof. | Christian Corda and Carlo Cafaro | Universality of the thermodynamics of a quantum-mechanically radiating
black hole departing from thermality | 13 pages, to appear in Physics Letters B | Phys. Lett. B, 856, 138948 (2024) | 10.1016/j.physletb.2024.138948 | null | gr-qc astro-ph.HE hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Mathur and Mehta won the third prize in the 2023 Gravity Research Foundation
Essay Competition for proving the universality of black hole (BH)
thermodynamics. Specifically, they demonstrated that any Extremely Compact
Object (ECO) must have the same BH thermodynamic properties regardless of
whether or not the ECO pos... | [
{
"created": "Sun, 28 Apr 2024 09:52:58 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Jul 2024 20:22:01 GMT",
"version": "v2"
}
] | 2024-08-15 | [
[
"Corda",
"Christian",
""
],
[
"Cafaro",
"Carlo",
""
]
] | Mathur and Mehta won the third prize in the 2023 Gravity Research Foundation Essay Competition for proving the universality of black hole (BH) thermodynamics. Specifically, they demonstrated that any Extremely Compact Object (ECO) must have the same BH thermodynamic properties regardless of whether or not the ECO posse... |
2108.02782 | Kyriakos Destounis Dr. | Kyriakos Destounis and Kostas D. Kokkotas | Gravitational-wave glitches: resonant islands and frequency jumps in
non-integrable extreme-mass-ratio inspirals | 13 pages, 4 figures, accepted for publication in Phys. Rev. D | Phys. Rev. D 104, 064023 (2021) | 10.1103/PhysRevD.104.064023 | null | gr-qc astro-ph.HE nlin.CD | http://creativecommons.org/licenses/by/4.0/ | The detection of gravitational waves from extreme-mass-ratio inspirals with
upcoming space-borne detectors will allow for unprecedented tests of general
relativity in the strong-field regime. Aside from assessing whether black holes
are unequivocally described by the Kerr metric, such detections may place
constraints... | [
{
"created": "Thu, 5 Aug 2021 18:00:01 GMT",
"version": "v1"
}
] | 2021-09-08 | [
[
"Destounis",
"Kyriakos",
""
],
[
"Kokkotas",
"Kostas D.",
""
]
] | The detection of gravitational waves from extreme-mass-ratio inspirals with upcoming space-borne detectors will allow for unprecedented tests of general relativity in the strong-field regime. Aside from assessing whether black holes are unequivocally described by the Kerr metric, such detections may place constraints o... |
gr-qc/0608061 | Guillermo A. Mena Marugan | Pablo Galan and Guillermo A. Mena Marugan | Entropy and temperature of black holes in a gravity's rainbow | 11 pages, 2 new references added, version accepted for publication in
Physical Review D | Phys.Rev. D74 (2006) 044035 | 10.1103/PhysRevD.74.044035 | null | gr-qc | null | The linear relation between the entropy and area of a black hole can be
derived from the Heisenberg principle, the energy-momentum dispersion relation
of special relativity, and general considerations about black holes. There
exist results in quantum gravity and related contexts suggesting the
modification of the usu... | [
{
"created": "Fri, 11 Aug 2006 16:22:44 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Aug 2006 15:20:29 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Galan",
"Pablo",
""
],
[
"Marugan",
"Guillermo A. Mena",
""
]
] | The linear relation between the entropy and area of a black hole can be derived from the Heisenberg principle, the energy-momentum dispersion relation of special relativity, and general considerations about black holes. There exist results in quantum gravity and related contexts suggesting the modification of the usual... |
2001.10196 | Susobhan Mandal | Athira B S, Susobhan Mandal, Subhashish Banerjee | Characteristics of interaction between Gravitons and Photons | 22 pages, 2 figures | null | 10.1140/epjp/s13360-021-01361-8 | null | gr-qc hep-th physics.optics quant-ph | http://creativecommons.org/licenses/by/4.0/ | The direct detection of gravitational waves from binary mergers has been
hailed as the discovery of the century. In the light of recent evidence on the
existence of gravitational waves, it is now possible to know about the
properties of matter under extreme conditions in compact astrophysical objects
and different dy... | [
{
"created": "Tue, 28 Jan 2020 07:36:49 GMT",
"version": "v1"
},
{
"created": "Sun, 25 Apr 2021 04:04:55 GMT",
"version": "v2"
}
] | 2021-04-27 | [
[
"S",
"Athira B",
""
],
[
"Mandal",
"Susobhan",
""
],
[
"Banerjee",
"Subhashish",
""
]
] | The direct detection of gravitational waves from binary mergers has been hailed as the discovery of the century. In the light of recent evidence on the existence of gravitational waves, it is now possible to know about the properties of matter under extreme conditions in compact astrophysical objects and different dyna... |
1709.00219 | Cosimo Bambi | Zheng Cao, Sourabh Nampalliwar, Cosimo Bambi, Thomas Dauser, Javier A.
Garcia | Testing general relativity with the reflection spectrum of the
supermassive black hole in 1H0707$-$495 | 10 pages, 7 figures. v2: refereed version | Phys. Rev. Lett. 120, 051101 (2018) | 10.1103/PhysRevLett.120.051101 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, we have extended the X-ray reflection model relxill to test the
spacetime metric in the strong gravitational field of astrophysical black
holes. In the present Letter, we employ this extended model to analyze
XMM-Newton, NuSTAR, and Swift data of the supermassive black hole in 1H0707-495
and test deviations... | [
{
"created": "Fri, 1 Sep 2017 09:43:43 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Feb 2018 00:23:20 GMT",
"version": "v2"
}
] | 2018-02-05 | [
[
"Cao",
"Zheng",
""
],
[
"Nampalliwar",
"Sourabh",
""
],
[
"Bambi",
"Cosimo",
""
],
[
"Dauser",
"Thomas",
""
],
[
"Garcia",
"Javier A.",
""
]
] | Recently, we have extended the X-ray reflection model relxill to test the spacetime metric in the strong gravitational field of astrophysical black holes. In the present Letter, we employ this extended model to analyze XMM-Newton, NuSTAR, and Swift data of the supermassive black hole in 1H0707-495 and test deviations f... |
1311.6898 | Amalaya Khurshudyan | M. Khurshudyan | Phenomenological models of Universe with varying $G$ and $\Lambda$ | 19 pages. revisited according to the comments of referees. arXiv
admin note: text overlap with arXiv:astro-ph/0004125, arXiv:1304.1961 by
other authors | Central Eur.J.Phys. 12 (2014) 348-366 | 10.2478/s11534-014-0453-z | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we will consider several phenomenological models for the
Universe with varying $G$ and $\Lambda(t)$, where $G$ is the gravitational
"constant" and $\Lambda(t)$ is a varying cosmological "constant". Two-component
fluid model taken into account. An interaction of the phenomenological form
between a baro... | [
{
"created": "Wed, 27 Nov 2013 08:42:41 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Mar 2014 06:22:52 GMT",
"version": "v2"
}
] | 2015-09-16 | [
[
"Khurshudyan",
"M.",
""
]
] | In this article we will consider several phenomenological models for the Universe with varying $G$ and $\Lambda(t)$, where $G$ is the gravitational "constant" and $\Lambda(t)$ is a varying cosmological "constant". Two-component fluid model taken into account. An interaction of the phenomenological form between a barotr... |
1908.03845 | Xiao-Xiong Zeng | Xiao-Xiong Zeng, Xin-Yun Hu | Thermodynamics and weak cosmic censorship conjecture with pressure in
the rotating BTZ black holes | 5 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | As a charged spinning fermion drops into a charged rotating BTZ black hole,
we investigate the laws of thermodynamics and weak cosmic censorship conjecture
with and without pressure respectively. For the case without pressure, the
first law, second law, as well as the weak cosmic censorship are found to be
valid. Whi... | [
{
"created": "Sun, 11 Aug 2019 03:22:36 GMT",
"version": "v1"
}
] | 2019-08-13 | [
[
"Zeng",
"Xiao-Xiong",
""
],
[
"Hu",
"Xin-Yun",
""
]
] | As a charged spinning fermion drops into a charged rotating BTZ black hole, we investigate the laws of thermodynamics and weak cosmic censorship conjecture with and without pressure respectively. For the case without pressure, the first law, second law, as well as the weak cosmic censorship are found to be valid. While... |
gr-qc/0412055 | Jos\'e Wadih Maluf | Jose Wadih Maluf | Accelerated observers and gravitational radiation | 12 pages, Latex file, no figures. Version to appear in Gravitation
and Cosmology | Grav.Cosmol. 11 (2005) 284-288 | null | null | gr-qc | null | We evaluate the energy-momentum of the gravitational field of a Schwarzschild
black hole of mass M in the frame of a moving observer that asymptotically
undergoes a Lorentz boost. The analysis is carried out in the framework of the
teleparallel equivalent of general relativity (TEGR). We find that the total
expressio... | [
{
"created": "Sun, 12 Dec 2004 17:40:09 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Apr 2005 13:27:13 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Maluf",
"Jose Wadih",
""
]
] | We evaluate the energy-momentum of the gravitational field of a Schwarzschild black hole of mass M in the frame of a moving observer that asymptotically undergoes a Lorentz boost. The analysis is carried out in the framework of the teleparallel equivalent of general relativity (TEGR). We find that the total expression ... |
gr-qc/9403011 | Wai Suen | Peter Anninos, David Bernstein, Steven Brandt, Joseph Libson, Joan
Masso, Edward Seidel, Larry Smarr, Wai-Mo Suen, Paul Walker | Dynamics of Apparent and Event Horizons | 4 pages, 94-2 | Phys.Rev.Lett. 74 (1995) 630-633 | 10.1103/PhysRevLett.74.630 | null | gr-qc | null | The dynamics of apparent and event horizons of various black hole spacetimes,
including those containing distorted, rotating and colliding black holes, are
studied. We have developed a powerful and efficient new method for locating the
event horizon, making possible the study of both types of horizons in numerical
re... | [
{
"created": "Thu, 3 Mar 1994 16:18:25 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Anninos",
"Peter",
""
],
[
"Bernstein",
"David",
""
],
[
"Brandt",
"Steven",
""
],
[
"Libson",
"Joseph",
""
],
[
"Masso",
"Joan",
""
],
[
"Seidel",
"Edward",
""
],
[
"Smarr",
"Larry",
""
],
[
"Suen... | The dynamics of apparent and event horizons of various black hole spacetimes, including those containing distorted, rotating and colliding black holes, are studied. We have developed a powerful and efficient new method for locating the event horizon, making possible the study of both types of horizons in numerical rela... |
gr-qc/9912025 | William Pezzaglia . D. | William M. Pezzaglia (Physics, Santa Clara University, CA) | Dimensionally Democratic Calculus and Principles of Polydimensional
Physics | 22 pages, LaTeX, no figures. Submitted to Proceedings of the 5th
International Conference on Clifford Algebras and their Applications in
Mathematical Physics, Ixtapa-Zihuatanejo, Mexico, June 27-July 4, 1999, (R.
Ablamowicz and B. Fauser eds.). Presentation slides available at
http://www.clifford.org/wpezzag/ta... | null | null | PEZZ9903, clf-alg/pezz9903 | gr-qc | null | A solution to the 50 year old problem of a spinning particle in curved space
has been recently derived using an extension of Clifford calculus in which each
geometric element has its own coordinate. This leads us to propose that all the
laws of physics should obey new polydimensional metaprinciples, for which
Cliffor... | [
{
"created": "Wed, 8 Dec 1999 00:45:24 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pezzaglia",
"William M.",
"",
"Physics, Santa Clara University, CA"
]
] | A solution to the 50 year old problem of a spinning particle in curved space has been recently derived using an extension of Clifford calculus in which each geometric element has its own coordinate. This leads us to propose that all the laws of physics should obey new polydimensional metaprinciples, for which Clifford ... |
2109.06843 | Martin Bojowald | Martin Bojowald and Brenda Jones | Tunneling dynamics in cosmological bounce models | 18 pages, 5 figures | JCAP 11 (2021) 037 | 10.1088/1475-7516/2021/11/037 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quasiclassical methods are used to define dynamical tunneling times in models
of quantum cosmological bounces. These methods provide relevant new information
compared with the traditional treatment of quantum tunneling by means of
tunneling probabilities. As shown here, the quantum dynamics in bounce models
is not se... | [
{
"created": "Tue, 14 Sep 2021 17:30:31 GMT",
"version": "v1"
}
] | 2021-11-18 | [
[
"Bojowald",
"Martin",
""
],
[
"Jones",
"Brenda",
""
]
] | Quasiclassical methods are used to define dynamical tunneling times in models of quantum cosmological bounces. These methods provide relevant new information compared with the traditional treatment of quantum tunneling by means of tunneling probabilities. As shown here, the quantum dynamics in bounce models is not secu... |
gr-qc/9607027 | Gary Horowitz | Gary T. Horowitz and Harrison J. Sheinblatt | Tests of Cosmic Censorship in the Ernst Spacetime | 15 pages | Phys.Rev. D55 (1997) 650-657 | 10.1103/PhysRevD.55.650 | null | gr-qc | null | The Ernst spacetime is a solution of the Einstein-Maxwell equations
describing two charged black holes accelerating apart in a uniform electric (or
magnetic) field. As the field approaches a critical value, the black hole
horizon appears to touch the acceleration horizon. We show that weak cosmic
censorship cannot be... | [
{
"created": "Thu, 11 Jul 1996 23:19:31 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Horowitz",
"Gary T.",
""
],
[
"Sheinblatt",
"Harrison J.",
""
]
] | The Ernst spacetime is a solution of the Einstein-Maxwell equations describing two charged black holes accelerating apart in a uniform electric (or magnetic) field. As the field approaches a critical value, the black hole horizon appears to touch the acceleration horizon. We show that weak cosmic censorship cannot be v... |
1711.04423 | Soumya Chakrabarti | Soumya Chakrabarti, Jackson Levi Said, and Gabriel Farrugia | Some aspects of reconstruction using a scalar field in f (T ) Gravity | 22 pages, 19 figures, to appear in EPJC | null | 10.1140/epjc/s10052-017-5404-6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativity characterizes gravity as a geometric property exhibited on
spacetime by massive objects while teleparallel gravity achieves the same
results, at the level of equations, by taking a torsional perspective of
gravity. Similar to f (R) theory, teleparallel gravity can also be generalized
to f (T ), wit... | [
{
"created": "Mon, 13 Nov 2017 05:22:08 GMT",
"version": "v1"
}
] | 2018-01-17 | [
[
"Chakrabarti",
"Soumya",
""
],
[
"Said",
"Jackson Levi",
""
],
[
"Farrugia",
"Gabriel",
""
]
] | General relativity characterizes gravity as a geometric property exhibited on spacetime by massive objects while teleparallel gravity achieves the same results, at the level of equations, by taking a torsional perspective of gravity. Similar to f (R) theory, teleparallel gravity can also be generalized to f (T ), with ... |
1811.03003 | Tanwi Bandyopadhyay | Tanwi Bandyopadhyay and Ujjal Debnath | Parameterizing Dark Energy Models and Study of Finite Time Future
Singularities | 15 pages, 45 figures | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A review on spatially flat D-dimensional Friedmann-Robertson-Walker (FRW)
model of the universe has been performed. Some standard parameterizations of
the equation of state parameter of the Dark Energy models are proposed and the
possibilities of finite time future singularities are investigated. It is found
that cer... | [
{
"created": "Mon, 5 Nov 2018 05:28:29 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Mar 2019 05:54:09 GMT",
"version": "v2"
}
] | 2019-03-26 | [
[
"Bandyopadhyay",
"Tanwi",
""
],
[
"Debnath",
"Ujjal",
""
]
] | A review on spatially flat D-dimensional Friedmann-Robertson-Walker (FRW) model of the universe has been performed. Some standard parameterizations of the equation of state parameter of the Dark Energy models are proposed and the possibilities of finite time future singularities are investigated. It is found that certa... |
gr-qc/9910083 | Yakov Itin | Shmuel Kaniel and Yakov Itin | Equation of motion in a scalar model of gravity | null | null | null | null | gr-qc math-ph math.MP | null | A scalar model of gravity is considered. We propose Lorentz invariant field
equation $\square f = k\eta_{ab}f_{,a}f_{,b}$. The aim of this model is to get,
approximately, Newton's law of gravity. It is shown that $f=-\frac
1k\ln(1-k\frac mr)$ is the unique spherical symmetric static solution of the
field equation. $f... | [
{
"created": "Mon, 25 Oct 1999 10:54:02 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kaniel",
"Shmuel",
""
],
[
"Itin",
"Yakov",
""
]
] | A scalar model of gravity is considered. We propose Lorentz invariant field equation $\square f = k\eta_{ab}f_{,a}f_{,b}$. The aim of this model is to get, approximately, Newton's law of gravity. It is shown that $f=-\frac 1k\ln(1-k\frac mr)$ is the unique spherical symmetric static solution of the field equation. $f$ ... |
1709.02284 | Anton Sheykin | N. V. Kharuk, S. A. Paston, A. A. Sheykin | Classical electromagnetic potential as a part of gravitational
connection: ideas and history | LaTeX, 17 pages | Gravitation and Cosmology 24:3 (2018) 209 | 10.1134/S0202289318030076 | null | gr-qc hep-th physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a natural form of unified theory of gravity and electromagnetism
which was somehow missed at the time of intense search for such an unification,
and was noticed only in 1978 but remained quite unknown. The basic idea of this
unification is to use the metric and non-symmetric connection as independent
vari... | [
{
"created": "Thu, 7 Sep 2017 14:44:53 GMT",
"version": "v1"
}
] | 2018-12-27 | [
[
"Kharuk",
"N. V.",
""
],
[
"Paston",
"S. A.",
""
],
[
"Sheykin",
"A. A.",
""
]
] | We consider a natural form of unified theory of gravity and electromagnetism which was somehow missed at the time of intense search for such an unification, and was noticed only in 1978 but remained quite unknown. The basic idea of this unification is to use the metric and non-symmetric connection as independent variab... |
1104.1904 | Farhad Darabi | A. R. Rastkar, M. R. Setare, F. Darabi | Phantom phase power-law solution in $f(G)$ gravity | 10 pages, Published online in Astrophysics and Space Science | Astrophys Space Sci (2012) 337:487-491 | 10.1007/s10509-011-0849-9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Power-law solutions for $f(G)$ gravity coupled with perfect fluid have been
studied for spatially flat universe. It is shown that despite the matter
dominated and accelerating power-law solutions, the power-law solution exists
for an special form of $f(G)$ when this universe enters a Phantom phase.
| [
{
"created": "Mon, 11 Apr 2011 11:14:42 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Oct 2011 20:33:03 GMT",
"version": "v2"
}
] | 2012-02-09 | [
[
"Rastkar",
"A. R.",
""
],
[
"Setare",
"M. R.",
""
],
[
"Darabi",
"F.",
""
]
] | Power-law solutions for $f(G)$ gravity coupled with perfect fluid have been studied for spatially flat universe. It is shown that despite the matter dominated and accelerating power-law solutions, the power-law solution exists for an special form of $f(G)$ when this universe enters a Phantom phase. |
0906.5315 | Ivan Agullo | Ivan Agullo, Jose Navarro-Salas, Gonzalo J. Olmo, Leonard Parker | Insensitivity of Hawking radiation to an invariant Planck-scale cutoff | 4 pages | Phys.Rev.D80:047503,2009 | 10.1103/PhysRevD.80.047503 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A disturbing aspect of Hawking's derivation of black hole radiance is the
need to invoke extreme conditions for the quantum field that originates the
emitted quanta. It is widely argued that the derivation requires the validity
of the conventional relativistic field theory to arbitrarily high,
trans-Planckian scales.... | [
{
"created": "Mon, 29 Jun 2009 16:54:56 GMT",
"version": "v1"
}
] | 2015-03-12 | [
[
"Agullo",
"Ivan",
""
],
[
"Navarro-Salas",
"Jose",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Parker",
"Leonard",
""
]
] | A disturbing aspect of Hawking's derivation of black hole radiance is the need to invoke extreme conditions for the quantum field that originates the emitted quanta. It is widely argued that the derivation requires the validity of the conventional relativistic field theory to arbitrarily high, trans-Planckian scales. W... |
1203.2733 | Hanno Sahlmann | Kristina Giesel and Hanno Sahlmann | From Classical To Quantum Gravity: Introduction to Loop Quantum Gravity | 56 pages. Contribution to the Proceedings of the 3rd Quantum Geometry
and Quantum Gravity School in Zakopane (2011). v2: Typos corrected, various
small changes in presentation, version as published in PoS | null | 10.22323/1.140.0002 | APCTP Pre2012-004 | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an introduction to the canonical quantization of gravity performed
in loop quantum gravity, based on lectures held at the 3rd quantum geometry and
quantum gravity school in Zakopane in 2011. A special feature of this
introduction is the inclusion of new proposals for coupling matter to gravity
that can be ... | [
{
"created": "Tue, 13 Mar 2012 08:20:00 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jan 2013 09:23:41 GMT",
"version": "v2"
}
] | 2022-12-07 | [
[
"Giesel",
"Kristina",
""
],
[
"Sahlmann",
"Hanno",
""
]
] | We present an introduction to the canonical quantization of gravity performed in loop quantum gravity, based on lectures held at the 3rd quantum geometry and quantum gravity school in Zakopane in 2011. A special feature of this introduction is the inclusion of new proposals for coupling matter to gravity that can be us... |
gr-qc/0010020 | Matthew Benacquista | M J Benacquista, S Portegies Zwart, F A Rasio | LISA Sources in Globular Clusters | Contribution to Proceedings of 3rd LISA Symposium 7 pages, added
references | Class.Quant.Grav. 18 (2001) 4025-4032 | 10.1088/0264-9381/18/19/308 | null | gr-qc astro-ph | null | Globular clusters house a population of compact binaries that will be
interesting gravitational wave sources for LISA. We provide estimates for the
numbers of sources of several categories and discuss the sensitivity of LISA to
detecting these sources. The estimated total number of detectable sources
ranges from abou... | [
{
"created": "Thu, 5 Oct 2000 17:34:46 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Oct 2000 23:22:36 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Benacquista",
"M J",
""
],
[
"Zwart",
"S Portegies",
""
],
[
"Rasio",
"F A",
""
]
] | Globular clusters house a population of compact binaries that will be interesting gravitational wave sources for LISA. We provide estimates for the numbers of sources of several categories and discuss the sensitivity of LISA to detecting these sources. The estimated total number of detectable sources ranges from about ... |
gr-qc/0109015 | Eugen Radu | Eugen Radu | Static axially symmetric solutions of Einstein-Yang-Mills equations with
a negative cosmological constant: the regular case | 55 pages, 38 Encapsulated PostScript figures; high-resolution figures
are available on request | Phys.Rev.D65:044005,2002 | 10.1103/PhysRevD.65.044005 | Freiburg-THEP 01/14 | gr-qc | null | Numerical solutions of the Einstein-Yang-Mills equations with a negative
cosmological constant are constructed. These axially symmetric solutions
approach asymptotically the anti-de Sitter spacetime and are regular
everywhere. They are characterized by the winding number $n>1$, the mass and
the non-Abelian magnetic c... | [
{
"created": "Wed, 5 Sep 2001 11:47:57 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Oct 2001 15:09:39 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Radu",
"Eugen",
""
]
] | Numerical solutions of the Einstein-Yang-Mills equations with a negative cosmological constant are constructed. These axially symmetric solutions approach asymptotically the anti-de Sitter spacetime and are regular everywhere. They are characterized by the winding number $n>1$, the mass and the non-Abelian magnetic cha... |
gr-qc/0010092 | Somasri Sen | S. Sen and A. A. Sen | Late time acceleration in Brans Dicke Cosmology | 8 pages, RevTex style, 3 postscript figures, some more Comments made
about the feature of the model, references included, typos corrected.
Accepted for publication in Phys.Rev.D | Phys.Rev. D63 (2001) 124006 | 10.1103/PhysRevD.63.124006 | MRI-P-P001002 | gr-qc astro-ph | null | In this work we have investigated the possibility of having a late time
accelerated phase of the universe, suggested by recent supernova observation,
in the context of Brans Dicke (BD) theory with a symmetry breaking potential
and a matter field. We find that a perfect fluid matter field (pressureless and
with pressu... | [
{
"created": "Wed, 25 Oct 2000 08:54:21 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Mar 2001 11:43:15 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Sen",
"S.",
""
],
[
"Sen",
"A. A.",
""
]
] | In this work we have investigated the possibility of having a late time accelerated phase of the universe, suggested by recent supernova observation, in the context of Brans Dicke (BD) theory with a symmetry breaking potential and a matter field. We find that a perfect fluid matter field (pressureless and with pressure... |
2301.08049 | Justine Tarrant Dr | Justine Tarrant and Geoff Beck | Primordial black holes and the Sunyaev-Zel'dovich effect | 5 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Primordial black holes are a popular candidate for dark matter. In the mass
regime where their conjectured Hawking evaporation is significant, they have
been subject to many constraints via X-rays, gamma-rays, and even radio
emission. Previously the Sunyaev-Zel'dovich effect has been considered to place
further limit... | [
{
"created": "Thu, 19 Jan 2023 12:51:15 GMT",
"version": "v1"
}
] | 2023-01-20 | [
[
"Tarrant",
"Justine",
""
],
[
"Beck",
"Geoff",
""
]
] | Primordial black holes are a popular candidate for dark matter. In the mass regime where their conjectured Hawking evaporation is significant, they have been subject to many constraints via X-rays, gamma-rays, and even radio emission. Previously the Sunyaev-Zel'dovich effect has been considered to place further limits ... |
2207.08088 | XueHeng Zheng | X H Zheng and J X Zheng | Wheeler equation in Kerr background and astrophysical jet collimation | 7 pages, 4 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The Wheeler equation has an extension in the Kerr background. It has an exact
solution representing a running harmonic wave in the tortoise coordinate. The
wave models astrophysical jets in a new light because it collimates along the
axis of spacetime rotation, increasingly tightly when rotation quickens. The
model e... | [
{
"created": "Sun, 17 Jul 2022 06:50:38 GMT",
"version": "v1"
}
] | 2022-07-19 | [
[
"Zheng",
"X H",
""
],
[
"Zheng",
"J X",
""
]
] | The Wheeler equation has an extension in the Kerr background. It has an exact solution representing a running harmonic wave in the tortoise coordinate. The wave models astrophysical jets in a new light because it collimates along the axis of spacetime rotation, increasingly tightly when rotation quickens. The model end... |
2202.09290 | Tao Zhu | Qiang Wu, Shao-Wen Wei, and Tao Zhu | Are the black hole remnants produced from binary black hole mergers in
GWTC-3 thermodynamically stable? | 5 pages, 3 figures; v2: 7 GW events in GWTC-2.1 are included | null | null | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | Black hole thermodynamics has brought strong hints of a profound and
fundamental connection between gravity, thermodynamics, and quantum theory. If
the black hole does behave like a natural thermodynamic system, it should be
thermodynamically stable in a clean environment. In this paper, using the
observational data ... | [
{
"created": "Fri, 18 Feb 2022 16:32:00 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Feb 2022 07:30:04 GMT",
"version": "v2"
}
] | 2022-02-23 | [
[
"Wu",
"Qiang",
""
],
[
"Wei",
"Shao-Wen",
""
],
[
"Zhu",
"Tao",
""
]
] | Black hole thermodynamics has brought strong hints of a profound and fundamental connection between gravity, thermodynamics, and quantum theory. If the black hole does behave like a natural thermodynamic system, it should be thermodynamically stable in a clean environment. In this paper, using the observational data of... |
2003.12079 | Roberto Cotesta | Roberto Cotesta, Sylvain Marsat, Michael P\"urrer | Frequency domain reduced order model of aligned-spin effective-one-body
waveforms with higher-order modes | Fix label in Fig.10 | Phys. Rev. D 101, 124040 (2020) | 10.1103/PhysRevD.101.124040 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a frequency domain reduced order model (ROM) for the aligned-spin
effective-one-body (EOB) model for binary black holes (BBHs) SEOBNRv4HM that
includes the spherical harmonics modes $(\ell, |m|) = (2,1),(3,3),(4,4),(5,5)$
beyond the dominant $(\ell, |m|) = (2,2)$ mode. These higher modes are crucial
to acc... | [
{
"created": "Thu, 26 Mar 2020 18:00:22 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Mar 2020 10:20:44 GMT",
"version": "v2"
}
] | 2020-07-01 | [
[
"Cotesta",
"Roberto",
""
],
[
"Marsat",
"Sylvain",
""
],
[
"Pürrer",
"Michael",
""
]
] | We present a frequency domain reduced order model (ROM) for the aligned-spin effective-one-body (EOB) model for binary black holes (BBHs) SEOBNRv4HM that includes the spherical harmonics modes $(\ell, |m|) = (2,1),(3,3),(4,4),(5,5)$ beyond the dominant $(\ell, |m|) = (2,2)$ mode. These higher modes are crucial to accur... |
1703.00639 | Hongchao Zhang | Hongchao Zhang and Lixin Xu | Poincar\'e Gauge Gravity Cosmology | 5 pages, 3 figures, 2 tables | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we construct the logical framework of the Poincar\'e gauge
gravity cosmology based on five postulations, and introduce the modified
redshift relation within this framework. Then we solve a system with quadratic
action and some other assumptions to get an analytic solution on background
level. The evolut... | [
{
"created": "Thu, 2 Mar 2017 07:10:16 GMT",
"version": "v1"
}
] | 2017-03-03 | [
[
"Zhang",
"Hongchao",
""
],
[
"Xu",
"Lixin",
""
]
] | In this work, we construct the logical framework of the Poincar\'e gauge gravity cosmology based on five postulations, and introduce the modified redshift relation within this framework. Then we solve a system with quadratic action and some other assumptions to get an analytic solution on background level. The evolutio... |
2107.04869 | Jorge Ananias Neto | Everton M. C. Abreu and Jorge Ananias Neto | Statistical approaches on the apparent horizon entropy and the
generalized second law of thermodynamics | Enlarged version, to appear in PLB | null | 10.1016/j.physletb.2021.136803 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we have investigated the effects of three nongaussian entropies,
namely, the modified R\'enyi entropy (MRE), the Sharma-Mittal entropy (SME) and
the dual Kaniadakis entropy (DKE) in the investigation of the generalized
second law (GSL) of thermodynamics violation. The GSL is an extension of the
second la... | [
{
"created": "Sat, 10 Jul 2021 16:23:12 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Nov 2021 16:31:34 GMT",
"version": "v2"
}
] | 2022-01-05 | [
[
"Abreu",
"Everton M. C.",
""
],
[
"Neto",
"Jorge Ananias",
""
]
] | In this work we have investigated the effects of three nongaussian entropies, namely, the modified R\'enyi entropy (MRE), the Sharma-Mittal entropy (SME) and the dual Kaniadakis entropy (DKE) in the investigation of the generalized second law (GSL) of thermodynamics violation. The GSL is an extension of the second law ... |
1405.2173 | Olivier Sarbach | Francisco Astorga, Olivier Sarbach, Thomas Zannias | The evolution of a spatially homogeneous and isotropic universe filled
with a collisionless gas | Typos corrected, references added, 13 pages, 1 figure, prepared for
the proceedings of the X Workshop on Gravitation and Mathematical Physics,
Pachuca, Mexico, December 2013 | null | 10.1088/1742-6596/545/1/012001 | UWThPh-2014-12 | gr-qc cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the evolution of a spatially homogeneous and isotropic universe
described by a Friedmann-Robertson-Walker spacetime filled with a
collisionless, neutral, simple, massive gas. The gas is described by a
one-particle distribution function which satisfies the Liouville equation and
is assumed to be homogeneous ... | [
{
"created": "Fri, 9 May 2014 08:47:29 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Jun 2014 12:36:18 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Astorga",
"Francisco",
""
],
[
"Sarbach",
"Olivier",
""
],
[
"Zannias",
"Thomas",
""
]
] | We review the evolution of a spatially homogeneous and isotropic universe described by a Friedmann-Robertson-Walker spacetime filled with a collisionless, neutral, simple, massive gas. The gas is described by a one-particle distribution function which satisfies the Liouville equation and is assumed to be homogeneous an... |
1012.0056 | Florian Beyer | Florian Beyer | The cosmic no-hair conjecture: A study of the Nariai solutions | Prepared for the Proceedings of the 12th Marcel Grossman Meeting
(MG12), Paris, France, 12-18 July, 2009 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this talk, we investigate the cosmic no-hair conjecture for perturbed
Nariai solutions within the class of Gowdy symmetric solutions of Einstein's
field equations in vacuum with a positive cosmological constant. In particular,
we are interested whether these perturbations allow to construct new
cosmological black ... | [
{
"created": "Tue, 30 Nov 2010 22:50:30 GMT",
"version": "v1"
}
] | 2010-12-02 | [
[
"Beyer",
"Florian",
""
]
] | In this talk, we investigate the cosmic no-hair conjecture for perturbed Nariai solutions within the class of Gowdy symmetric solutions of Einstein's field equations in vacuum with a positive cosmological constant. In particular, we are interested whether these perturbations allow to construct new cosmological black ho... |
2007.00600 | Lorenzo Iorio | Lorenzo Iorio | On the 2PN pericentre precession in the general theory of relativity and
the recently discovered fast orbiting S-stars in Sgr A$^\ast$ | LaTex2e, 15 pages, 1 table, 1 figure. Typo in Eq.(7) of the previous
version, equal to Eq.(53) in Iorio L., 2020, Universe, 6, 53, corrected. Eqs.
(25)-(26) correct Eqs. (51)-(52) in Iorio L., 2020a, Universe, 6, 53.
Accepted for publication in Universe | Universe 2021, 7(2), 37 | 10.3390/universe7020037 | null | gr-qc astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, the secular pericentre precession was analytically computed to the
second post-Newtonian (2PN) order by the present author with the Gauss
equations in terms of the osculating Keplerian orbital elements in order to
obtain closer contact with the observations in astronomical and astrophysical
scenarios of pot... | [
{
"created": "Wed, 1 Jul 2020 16:36:31 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Aug 2020 15:38:39 GMT",
"version": "v2"
},
{
"created": "Wed, 30 Sep 2020 13:33:53 GMT",
"version": "v3"
},
{
"created": "Wed, 7 Oct 2020 21:26:09 GMT",
"version": "v4"
},
{
"cre... | 2021-02-08 | [
[
"Iorio",
"Lorenzo",
""
]
] | Recently, the secular pericentre precession was analytically computed to the second post-Newtonian (2PN) order by the present author with the Gauss equations in terms of the osculating Keplerian orbital elements in order to obtain closer contact with the observations in astronomical and astrophysical scenarios of poten... |
1705.08017 | Dmitri Gal'tsov | G\'erard Cl\'ement and Dmitri Gal'tsov | A tale of two dyons | 10 pages, one figure, published version | Phys.Lett. B771 (2017) 457-461 | 10.1016/j.physletb.2017.05.096 | LAPTH-016/17 | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a one-parameter family of stationary, asymptotically flat
solutions of the Einstein-Maxwell equations with only a mild singularity, which
are endowed with mass, angular momentum, a dipole magnetic moment and a
quadrupole electric moment. We briefly analyze the structure of this solution,
which we interpret... | [
{
"created": "Mon, 22 May 2017 21:45:26 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jun 2017 21:08:15 GMT",
"version": "v2"
}
] | 2017-06-15 | [
[
"Clément",
"Gérard",
""
],
[
"Gal'tsov",
"Dmitri",
""
]
] | We present a one-parameter family of stationary, asymptotically flat solutions of the Einstein-Maxwell equations with only a mild singularity, which are endowed with mass, angular momentum, a dipole magnetic moment and a quadrupole electric moment. We briefly analyze the structure of this solution, which we interpret a... |
gr-qc/0102044 | Jorge Pullin | Jorge Pullin | Matters of Gravity, the newsletter of the APS Topical Group on
Gravitation, Spring 2001 | 23 pages, LaTeX with html.sty. PDF and html versions in
http://gravity.phys.psu.edu/mog.html | null | null | MOG-17 | gr-qc | null | News:
- APS Prize on gravitation, by Cliff Will
- TGG elections, by David Garfinkle
- We hear that... by Jorge Pullin
Research Briefs:
- Experimental Unruh radiation?, by Matt Visser
- Why is the universe accelerating?, by Beverly Berger
- The Lazarus Project, by Richard Price
- LIGO locks its first d... | [
{
"created": "Sun, 11 Feb 2001 19:43:37 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pullin",
"Jorge",
""
]
] | News: - APS Prize on gravitation, by Cliff Will - TGG elections, by David Garfinkle - We hear that... by Jorge Pullin Research Briefs: - Experimental Unruh radiation?, by Matt Visser - Why is the universe accelerating?, by Beverly Berger - The Lazarus Project, by Richard Price - LIGO locks its first detector!, by Stan ... |
1701.00811 | C. Q. Geng | Chao-Qiang Geng, Chung-Chi Lee and Kaituo Zhang | Cosmological perturbation and matter power spectrum in bimetric massive
gravity | 18 pages, 4 figures, revised version accepted by Annals of Physics | Annals of Physics 391 (2018) 16-26 | 10.1016/j.aop.2018.02.001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the linear perturbation equations with the synchronous gauge in a
minimal scenario of the bimetric massive gravity theory. We find that the
matter density perturbation and matter power spectrum are suppressed. We also
examine the ghost and stability problems and show that the allowed deviation of
this grav... | [
{
"created": "Thu, 22 Dec 2016 02:44:43 GMT",
"version": "v1"
},
{
"created": "Sun, 15 Jan 2017 04:18:14 GMT",
"version": "v2"
},
{
"created": "Sun, 4 Feb 2018 03:29:53 GMT",
"version": "v3"
}
] | 2018-02-27 | [
[
"Geng",
"Chao-Qiang",
""
],
[
"Lee",
"Chung-Chi",
""
],
[
"Zhang",
"Kaituo",
""
]
] | We discuss the linear perturbation equations with the synchronous gauge in a minimal scenario of the bimetric massive gravity theory. We find that the matter density perturbation and matter power spectrum are suppressed. We also examine the ghost and stability problems and show that the allowed deviation of this gravit... |
2407.12908 | Giovanni Maria Tomaselli | Giovanni Maria Tomaselli, Thomas F.M. Spieksma, Gianfranco Bertone | The legacy of boson clouds on black hole binaries | Accepted for publication in Phys. Rev. Letters. Companion paper of
2403.03147 | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Superradiant clouds of ultralight bosons can leave an imprint on the
gravitational waveform of black hole binaries through "ionization" and
"resonances". We study the sequence of resonances as the binary evolves, and
show that there are only two possible outcomes, each with a distinct imprint on
the waveform. If the ... | [
{
"created": "Wed, 17 Jul 2024 18:00:00 GMT",
"version": "v1"
}
] | 2024-07-19 | [
[
"Tomaselli",
"Giovanni Maria",
""
],
[
"Spieksma",
"Thomas F. M.",
""
],
[
"Bertone",
"Gianfranco",
""
]
] | Superradiant clouds of ultralight bosons can leave an imprint on the gravitational waveform of black hole binaries through "ionization" and "resonances". We study the sequence of resonances as the binary evolves, and show that there are only two possible outcomes, each with a distinct imprint on the waveform. If the cl... |
2307.15888 | Gustavo Enrique Garc\'ia De Jes\'us | Gustavo Garc\'ia and Marcelo Salgado | Regular scalar clouds around a Kerr-Newman black hole: subextremal and
extremal scenarios | 25 pages, 19 Figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work we analyze the existence of electrically charged scalar clouds
which are bound states of a complex-valued massive scalar field in the
background of subextremal and extremal Kerr-Newman black holes (BH). In
particular, we reanalyze neutral (uncharged) clouds in extremal Kerr BH's. For
the extremal scenari... | [
{
"created": "Sat, 29 Jul 2023 05:18:58 GMT",
"version": "v1"
}
] | 2023-08-01 | [
[
"García",
"Gustavo",
""
],
[
"Salgado",
"Marcelo",
""
]
] | In this work we analyze the existence of electrically charged scalar clouds which are bound states of a complex-valued massive scalar field in the background of subextremal and extremal Kerr-Newman black holes (BH). In particular, we reanalyze neutral (uncharged) clouds in extremal Kerr BH's. For the extremal scenarios... |
2305.11216 | Alex Davey | Alex Davey, Oscar J.C. Dias, Jorge E. Santos | Scalar QNM spectra of Kerr and Reissner-Nordstr\"om revealed by
eigenvalue repulsions in Kerr-Newman | 62 pages, 20 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent studies of the gravito-electromagnetic frequency spectra of
Kerr-Newman (KN) black holes have revealed two families of quasinormal modes
(QNMs), namely photon sphere modes and near-horizon modes. However, they can
only be unambiguously distinguished in the Reissner-Nordstr\"om (RN) limit, due
to a phenomenon c... | [
{
"created": "Thu, 18 May 2023 18:00:01 GMT",
"version": "v1"
}
] | 2023-05-22 | [
[
"Davey",
"Alex",
""
],
[
"Dias",
"Oscar J. C.",
""
],
[
"Santos",
"Jorge E.",
""
]
] | Recent studies of the gravito-electromagnetic frequency spectra of Kerr-Newman (KN) black holes have revealed two families of quasinormal modes (QNMs), namely photon sphere modes and near-horizon modes. However, they can only be unambiguously distinguished in the Reissner-Nordstr\"om (RN) limit, due to a phenomenon cal... |
2010.00916 | Sajal Mukherjee | Sajal Mukherjee, Sanjit Mitra and Sourav Chatterjee | Gravitational Wave observatories may be able to detect hyperbolic
encounters of Black Holes | 10 pages, 4 figures | Monthly Notices of the Royal Astronomical Society, 508 (2021),
5064-5073 | 10.1093/mnras/stab2721 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational Wave (GW) astronomy promises to observe different kinds of
astrophysical sources. Here we explore the possibility of detection of GWs from
hyperbolic interactions of compact stars with ground-based interferometric
detectors. It is believed that a bound compact cluster, such as a globular
cluster, can be... | [
{
"created": "Fri, 2 Oct 2020 10:49:26 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Oct 2020 17:06:36 GMT",
"version": "v2"
},
{
"created": "Fri, 30 Oct 2020 13:51:41 GMT",
"version": "v3"
},
{
"created": "Thu, 28 Oct 2021 11:36:08 GMT",
"version": "v4"
}
] | 2021-10-29 | [
[
"Mukherjee",
"Sajal",
""
],
[
"Mitra",
"Sanjit",
""
],
[
"Chatterjee",
"Sourav",
""
]
] | Gravitational Wave (GW) astronomy promises to observe different kinds of astrophysical sources. Here we explore the possibility of detection of GWs from hyperbolic interactions of compact stars with ground-based interferometric detectors. It is believed that a bound compact cluster, such as a globular cluster, can be a... |
1806.09778 | Dimitris Christodoulou | Dimitris M. Christodoulou and Demosthenes Kazanas | Interposing a Varying Gravitational Constant Between Modified Newtonian
Dynamics and Weak Weyl Gravity | An original letter to appear in MNRAS | null | 10.1093/mnrasl/sly118 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Newtonian gravitational constant $G$ obeys the dimensional relation $[G]
[M] [a] = [v]^4$, where $M$, $a$, and $v$ denote mass, acceleration, and speed,
respectively. Since the baryonic Tully-Fisher (BTF) and Faber-Jackson (BFJ)
relations are observed facts, this relation implies that $G\, a = {\rm
constant}$. Th... | [
{
"created": "Tue, 26 Jun 2018 03:10:27 GMT",
"version": "v1"
}
] | 2018-07-11 | [
[
"Christodoulou",
"Dimitris M.",
""
],
[
"Kazanas",
"Demosthenes",
""
]
] | The Newtonian gravitational constant $G$ obeys the dimensional relation $[G] [M] [a] = [v]^4$, where $M$, $a$, and $v$ denote mass, acceleration, and speed, respectively. Since the baryonic Tully-Fisher (BTF) and Faber-Jackson (BFJ) relations are observed facts, this relation implies that $G\, a = {\rm constant}$. This... |
2108.11339 | Subhra Bhattacharya | Subhra Bhattacharya, Tanwi Bandyopadhyay | Revisiting the Evolving Lorentzian Wormhole: a General Perspective | null | Gen Relativ Gravit, 2021 | 10.1007/s10714-021-02878-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Wormholes can be described as geometrical structures in space and time that
can serve as connection between distant regions of the universe.
Mathematically, general wormholes can be defined both on stationary as well as
on dynamic line elements. However, general relativistic and evolving Lorentzian
wormholes are less... | [
{
"created": "Tue, 24 Aug 2021 07:44:27 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Nov 2021 05:04:06 GMT",
"version": "v2"
}
] | 2021-11-22 | [
[
"Bhattacharya",
"Subhra",
""
],
[
"Bandyopadhyay",
"Tanwi",
""
]
] | Wormholes can be described as geometrical structures in space and time that can serve as connection between distant regions of the universe. Mathematically, general wormholes can be defined both on stationary as well as on dynamic line elements. However, general relativistic and evolving Lorentzian wormholes are less s... |
gr-qc/9810056 | George Davies | George Davies | Second-Order Black Hole Perturbations: A Computer Algebra Approach, I -
The Schwarzschild Spacetime | 20 pages + 12 page appendix, also available at
http://www.astro.queensu.ca/~grtensor | null | null | null | gr-qc astro-ph | null | This article outlines our derivation of the second order perturbations to a
Schwarzschild black hole, highlighting our use of, and necessary reliance on,
computer algebra. The particular perturbation scenario that is presented here
is the case of the linear quadrapole seeding the second order quadrapole. This
problem... | [
{
"created": "Sun, 18 Oct 1998 06:19:40 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Davies",
"George",
""
]
] | This article outlines our derivation of the second order perturbations to a Schwarzschild black hole, highlighting our use of, and necessary reliance on, computer algebra. The particular perturbation scenario that is presented here is the case of the linear quadrapole seeding the second order quadrapole. This problem a... |
gr-qc/9405047 | Roberto De Pietri dottVI | R. De Pietri, L. Lusanna & M. Pauri | Standard and Generalized Newtonian Gravities as ``Gauge'' Theories of
the Extended Galilei Group - II: Dynamical Three-Space Theories | 29 pages , compress, uuencode LaTex file, gr-qc/95050xx | Class.Quant.Grav.12:255-272,1995 | 10.1088/0264-9381/12/1/020 | null | gr-qc | null | In a preceding paper we developed a reformulation of Newtonian gravitation as
a {\it gauge} theory of the extended Galilei group. In the present one we
derive two true generalizations of Newton's theory (a {\it ten-fields} and an
{\it eleven-fields} theory), in terms of an explicit Lagrangian realization of
the {\it ... | [
{
"created": "Sun, 22 May 1994 13:40:30 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"De Pietri",
"R.",
""
],
[
"Lusanna",
"L.",
""
],
[
"Pauri",
"M.",
""
]
] | In a preceding paper we developed a reformulation of Newtonian gravitation as a {\it gauge} theory of the extended Galilei group. In the present one we derive two true generalizations of Newton's theory (a {\it ten-fields} and an {\it eleven-fields} theory), in terms of an explicit Lagrangian realization of the {\it ab... |
1404.5836 | Sergey Chervon | Renat R. Abbyazov and Sergey V. Chervon | Unified dark matter and dark energy description in a chiral cosmological
model | 19 pages, 7 figures | Mod. Phys. Lett. A 28, 1350024 (2013) [19 pages] | 10.1142/S0217732313500247 | NIL GCA 2/2014 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show the way of dark matter and dark energy presentation via ansatzs on
the kinetic energies of the fields in the two-component chiral cosmological
model. To connect a kinetic interaction of dark matter and dark energy with
observational data the reconstruction procedure for the chiral metric component
$h_{22}$ an... | [
{
"created": "Wed, 23 Apr 2014 14:34:45 GMT",
"version": "v1"
}
] | 2014-04-24 | [
[
"Abbyazov",
"Renat R.",
""
],
[
"Chervon",
"Sergey V.",
""
]
] | We show the way of dark matter and dark energy presentation via ansatzs on the kinetic energies of the fields in the two-component chiral cosmological model. To connect a kinetic interaction of dark matter and dark energy with observational data the reconstruction procedure for the chiral metric component $h_{22}$ and ... |
1305.1640 | Jose Socorro Garcia | J. Socorro, Priscila Romero, Luis O. Pimentel and M. Aguero | Quintom potentials from quantum cosmology using the FRW cosmological
model | Latex2e, 10 pages, 1 figure | Acepted in Int. J. of Theor. Phys. (2013) | 10.1007/s10773-013-1565-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct the quintom potential of dark energy models in the framework of
spatially flat Friedmann-Robertson Walker universe in the inflationary epoch,
using the Bohm like approach, known as amplitude-real-phase. We find some
potentials for which the wave function of the universe is found analytically
and we have ... | [
{
"created": "Tue, 7 May 2013 20:33:06 GMT",
"version": "v1"
}
] | 2013-05-09 | [
[
"Socorro",
"J.",
""
],
[
"Romero",
"Priscila",
""
],
[
"Pimentel",
"Luis O.",
""
],
[
"Aguero",
"M.",
""
]
] | We construct the quintom potential of dark energy models in the framework of spatially flat Friedmann-Robertson Walker universe in the inflationary epoch, using the Bohm like approach, known as amplitude-real-phase. We find some potentials for which the wave function of the universe is found analytically and we have ob... |
gr-qc/9910064 | Shingo Suzuki | Shingo Suzuki and Kei-ichi Maeda | Signature of chaos in gravitational waves from a spinning particle | 14 pages, LaTeX, to appear in Phys. Rev. D | Phys.Rev. D61 (2000) 024005 | 10.1103/PhysRevD.61.024005 | WU-AP/83/99 | gr-qc | null | A spinning test particle around a Schwarzschild black hole shows a chaotic
behavior, if its spin is larger than a critical value. We discuss whether or
not some peculiar signature of chaos appears in the gravitational waves emitted
from such a system. Calculating the emitted gravitational waves by use of the
quadrupo... | [
{
"created": "Wed, 20 Oct 1999 06:07:34 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Suzuki",
"Shingo",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | A spinning test particle around a Schwarzschild black hole shows a chaotic behavior, if its spin is larger than a critical value. We discuss whether or not some peculiar signature of chaos appears in the gravitational waves emitted from such a system. Calculating the emitted gravitational waves by use of the quadrupole... |
gr-qc/0701166 | Juan A. Valiente-Kroon | J. A. Valiente Kroon | Asymptotic properties of the development of conformally flat data near
spatial infinity | 24 pages, 1 figure | Class.Quant.Grav.24:3037-3054,2007 | 10.1088/0264-9381/24/11/016 | null | gr-qc | null | Certain aspects of the behaviour of the gravitational field near null and
spatial infinity for the developments of asymptotically Euclidean, conformally
flat initial data sets are analysed. Ideas and results from two different
approaches are combined: on the one hand the null infinity formalism related to
the asympto... | [
{
"created": "Tue, 30 Jan 2007 09:53:52 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kroon",
"J. A. Valiente",
""
]
] | Certain aspects of the behaviour of the gravitational field near null and spatial infinity for the developments of asymptotically Euclidean, conformally flat initial data sets are analysed. Ideas and results from two different approaches are combined: on the one hand the null infinity formalism related to the asymptoti... |
1307.2227 | Matteo Smerlak | Matteo Smerlak | The two faces of Hawking radiation | Honorable Mention in the Gravity Research Foundation 2013 Essay
Competition | Int. J. Mod. Phys. D Vol. 22, No. 12 (2013) 1342019 | 10.1142/S0218271813420194 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | What happens when Alice falls into a black hole? In spite of recent
challenges by Almheiri et al. -- the ""firewall" hypothesis -- the consensus on
this question tends to remain "nothing special". Here I argue that something
rather special can happen near the horizon, already at the semiclassical level:
besides the s... | [
{
"created": "Fri, 5 Jul 2013 20:35:13 GMT",
"version": "v1"
}
] | 2013-09-16 | [
[
"Smerlak",
"Matteo",
""
]
] | What happens when Alice falls into a black hole? In spite of recent challenges by Almheiri et al. -- the ""firewall" hypothesis -- the consensus on this question tends to remain "nothing special". Here I argue that something rather special can happen near the horizon, already at the semiclassical level: besides the sta... |
2209.03751 | V. G. Gurzadyan | A. Stepanian, Sh. Khlghatyan, V.G. Gurzadyan | Tidal disruption effects near black holes and Lambda-gravity | 6 pages, 3 figures; Eur.Phys.J.Plus (in press) | Eur. Phys. J. Plus, 137: 965 (2022) | 10.1140/epjp/s13360-022-03143-2 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The tidal disruption of stars in the vicinity of massive black holes is
discussed in the context of $\Lambda$-gravity. The latter provides an
explanation to the Hubble tension as a possible consequence of two Hubble
flows, the local and global ones. The bunch of notions which play role for the
considered tidal effect... | [
{
"created": "Thu, 1 Sep 2022 02:47:02 GMT",
"version": "v1"
}
] | 2022-09-09 | [
[
"Stepanian",
"A.",
""
],
[
"Khlghatyan",
"Sh.",
""
],
[
"Gurzadyan",
"V. G.",
""
]
] | The tidal disruption of stars in the vicinity of massive black holes is discussed in the context of $\Lambda$-gravity. The latter provides an explanation to the Hubble tension as a possible consequence of two Hubble flows, the local and global ones. The bunch of notions which play role for the considered tidal effect a... |
2102.07099 | Shyam Das | Shyam Das, Saibal Ray, Maxim Khlopov, K.K. Nandi, Bikram Keshari
Parida | Anisotropic compact stars: Constraining model parameters to account for
physical features of tidal Love numbers | Major Revision based on the referee reports; 31 pages; 11 figures | Annals of Physics 433 (2021) 168597 | 10.1016/j.aop.2021.168597 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we develop a new class of models for a compact star with
anisotropic stresses inside the matter distribution. By assuming a linear
equation of state for the anisotropic matter composition of the star we solve
the Einstein field equations. In our approach, for the interior solutions we
use a particular ... | [
{
"created": "Sun, 14 Feb 2021 08:19:30 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Nov 2021 12:11:06 GMT",
"version": "v2"
}
] | 2021-11-16 | [
[
"Das",
"Shyam",
""
],
[
"Ray",
"Saibal",
""
],
[
"Khlopov",
"Maxim",
""
],
[
"Nandi",
"K. K.",
""
],
[
"Parida",
"Bikram Keshari",
""
]
] | In this paper, we develop a new class of models for a compact star with anisotropic stresses inside the matter distribution. By assuming a linear equation of state for the anisotropic matter composition of the star we solve the Einstein field equations. In our approach, for the interior solutions we use a particular fo... |
1211.5051 | Joan Josep Ferrando | Joan Josep Ferrando and Juan Antonio S\'aez | On the super-energy radiative gravitational fields | 16 pages; 1 figure | Class. Quantum Grav. 30 (2013) 095013 | 10.1088/0264-9381/30/9/095013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend our recent analysis (Ferrando J J and S\'aez J A 2012 Class.
Quantum Grav. 29 075012) on the Bel radiative gravitational fields to the
super-energy radiative gravitational fields defined by Garc\'{\i}a-Parrado
(Class. Quantum Grav. 25 015006). We give an intrinsic characterization of the
{\it new radiative ... | [
{
"created": "Wed, 21 Nov 2012 14:58:53 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Apr 2013 09:28:36 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Ferrando",
"Joan Josep",
""
],
[
"Sáez",
"Juan Antonio",
""
]
] | We extend our recent analysis (Ferrando J J and S\'aez J A 2012 Class. Quantum Grav. 29 075012) on the Bel radiative gravitational fields to the super-energy radiative gravitational fields defined by Garc\'{\i}a-Parrado (Class. Quantum Grav. 25 015006). We give an intrinsic characterization of the {\it new radiative fi... |
1610.01203 | Amna Ali | Debabrata Adak and Amna Ali | Bounce and Collapse in the Slotheonic Universe | 7 pages, 6figures | International Journal of Modern Physics D Vol. 26 (2017) 1750089 | 10.1142/S0218271817500894 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we examine the cosmological dynamics of a slotheon field in a
linear potential. The slotheon correction term
$\frac{G^{\mu\nu}}{2M^2}\pi_{;\mu}\pi_{;\nu}$ respects the galileon symmetry in
curved space time. We demonstrate the future evolution of universe in this
model. We show that in this scenario, t... | [
{
"created": "Mon, 3 Oct 2016 10:16:48 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Apr 2017 07:25:58 GMT",
"version": "v2"
}
] | 2017-04-12 | [
[
"Adak",
"Debabrata",
""
],
[
"Ali",
"Amna",
""
]
] | In this paper, we examine the cosmological dynamics of a slotheon field in a linear potential. The slotheon correction term $\frac{G^{\mu\nu}}{2M^2}\pi_{;\mu}\pi_{;\nu}$ respects the galileon symmetry in curved space time. We demonstrate the future evolution of universe in this model. We show that in this scenario, the... |
gr-qc/0607101 | Kristina Giesel | K. Giesel, T. Thiemann | Algebraic Quantum Gravity (AQG) III. Semiclassical Perturbation Theory | null | Class.Quant.Grav.24:2565-2588,2007 | 10.1088/0264-9381/24/10/005 | AEI-2006-60 | gr-qc hep-th math-ph math.MP | null | In the two previous papers of this series we defined a new combinatorical
approach to quantum gravity, Algebraic Quantum Gravity (AQG). We showed that
AQG reproduces the correct infinitesimal dynamics in the semiclassical limit,
provided one incorrectly substitutes the non -- Abelean group SU(2) by the
Abelean group ... | [
{
"created": "Sun, 23 Jul 2006 21:30:29 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Giesel",
"K.",
""
],
[
"Thiemann",
"T.",
""
]
] | In the two previous papers of this series we defined a new combinatorical approach to quantum gravity, Algebraic Quantum Gravity (AQG). We showed that AQG reproduces the correct infinitesimal dynamics in the semiclassical limit, provided one incorrectly substitutes the non -- Abelean group SU(2) by the Abelean group $U... |
2110.02263 | Chris Timberlake | Chris Timberlake (1), Andrea Vinante (1 and 2), Francesco Shankar (1),
Andrea Lapi (3), Hendrik Ulbricht (1) ((1) University of Southampton and (2)
Istituto di Fotonica e Nanotecnologie CNR and (3) SISSA) | Probing modified gravity with magnetically levitated resonators | 6 pages, 3 figures | null | 10.1103/PhysRevD.104.L101101 | null | gr-qc cond-mat.supr-con physics.class-ph | http://creativecommons.org/licenses/by/4.0/ | We present an experimental procedure, based on Meissner effect levitation of
neodymium ferromagnets, as a method of measuring the gravitational interactions
between mg masses. The scheme consists of two superconducting lead traps, with
a magnet levitating in each trap. The levitating magnets behave as harmonic
oscill... | [
{
"created": "Tue, 5 Oct 2021 18:10:58 GMT",
"version": "v1"
}
] | 2021-11-17 | [
[
"Timberlake",
"Chris",
"",
"1 and 2"
],
[
"Vinante",
"Andrea",
"",
"1 and 2"
],
[
"Shankar",
"Francesco",
""
],
[
"Lapi",
"Andrea",
""
],
[
"Ulbricht",
"Hendrik",
""
]
] | We present an experimental procedure, based on Meissner effect levitation of neodymium ferromagnets, as a method of measuring the gravitational interactions between mg masses. The scheme consists of two superconducting lead traps, with a magnet levitating in each trap. The levitating magnets behave as harmonic oscillat... |
gr-qc/0501085 | Vicente Jos\'e Bol\'os | V. J. Bol\'os | Lightlike simultaneity, comoving observers and distances in general
relativity | 17 pages, 5 figures. Since "lightlike distance" is in fact the known
"affine distance", the notation has been changed | J.Geom.Phys. 56 (2006) 813-829 | 10.1016/j.geomphys.2005.05.001 | null | gr-qc | null | We state a condition for an observer to be comoving with another observer in
general relativity, based on the concept of lightlike simultaneity. Taking into
account this condition, we study relative velocities, Doppler effect and light
aberration. We obtain that comoving observers observe the same light ray with
the ... | [
{
"created": "Thu, 27 Jan 2005 12:07:39 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Jan 2005 11:20:58 GMT",
"version": "v2"
},
{
"created": "Mon, 25 Apr 2005 09:35:53 GMT",
"version": "v3"
},
{
"created": "Thu, 9 Mar 2006 19:25:14 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Bolós",
"V. J.",
""
]
] | We state a condition for an observer to be comoving with another observer in general relativity, based on the concept of lightlike simultaneity. Taking into account this condition, we study relative velocities, Doppler effect and light aberration. We obtain that comoving observers observe the same light ray with the sa... |
1807.09495 | Zong-Kuan Guo | Wen-Hong Ruan, Zong-Kuan Guo, Rong-Gen Cai, Yuan-Zhong Zhang | Taiji Program: Gravitational-Wave Sources | 15 pages, for the strain sensitivity of Taiji please send an email to
<guozk@itp.ac.cn> | Int. J. Mod. Phys. A35 (2020) 2050075 | 10.1142/S0217751X2050075X | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review potential low-frequency gravitational-wave sources, which are
expected to be detected by Taiji, a Chinese space-based gravitational-wave
detector, estimate the detection rates of these gravitational-wave sources and
present the parameter estimation of massive black hole binaries.
| [
{
"created": "Wed, 25 Jul 2018 09:11:17 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Aug 2019 11:54:48 GMT",
"version": "v2"
},
{
"created": "Thu, 4 Jun 2020 08:56:43 GMT",
"version": "v3"
}
] | 2020-06-05 | [
[
"Ruan",
"Wen-Hong",
""
],
[
"Guo",
"Zong-Kuan",
""
],
[
"Cai",
"Rong-Gen",
""
],
[
"Zhang",
"Yuan-Zhong",
""
]
] | We review potential low-frequency gravitational-wave sources, which are expected to be detected by Taiji, a Chinese space-based gravitational-wave detector, estimate the detection rates of these gravitational-wave sources and present the parameter estimation of massive black hole binaries. |
1605.03204 | Karan Jani | Karan Jani, James Healy, James A. Clark, Lionel London, Pablo Laguna
and Deirdre Shoemaker | Georgia Tech Catalog of Gravitational Waveforms | null | null | 10.1088/0264-9381/33/20/204001 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper introduces a catalog of gravitational waveforms from the bank of
simulations by the numerical relativity effort at Georgia Tech. Currently, the
catalog consists of 452 distinct waveforms from more than 600 binary black hole
simulations: 128 of the waveforms are from binaries with black hole spins
aligned w... | [
{
"created": "Tue, 10 May 2016 20:31:49 GMT",
"version": "v1"
}
] | 2016-10-05 | [
[
"Jani",
"Karan",
""
],
[
"Healy",
"James",
""
],
[
"Clark",
"James A.",
""
],
[
"London",
"Lionel",
""
],
[
"Laguna",
"Pablo",
""
],
[
"Shoemaker",
"Deirdre",
""
]
] | This paper introduces a catalog of gravitational waveforms from the bank of simulations by the numerical relativity effort at Georgia Tech. Currently, the catalog consists of 452 distinct waveforms from more than 600 binary black hole simulations: 128 of the waveforms are from binaries with black hole spins aligned wit... |
gr-qc/0601053 | C. R. Keeton | Charles R. Keeton (Rutgers), A. O. Petters (Duke) | Formalism for testing theories of gravity using lensing by compact
objects. II: Probing Post-Post-Newtonian metrics | submitted | Phys.Rev. D73 (2006) 044024 | 10.1103/PhysRevD.73.044024 | null | gr-qc astro-ph | null | We study gravitational lensing by compact objects in gravity theories that
can be written in a Post-Post-Newtonian (PPN) framework: i.e., the metric is
static and spherically symmetric, and can be written as a Taylor series in m/r,
where m is the gravitational radius of the compact object. Working invariantly,
we com... | [
{
"created": "Fri, 13 Jan 2006 17:21:44 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Keeton",
"Charles R.",
"",
"Rutgers"
],
[
"Petters",
"A. O.",
"",
"Duke"
]
] | We study gravitational lensing by compact objects in gravity theories that can be written in a Post-Post-Newtonian (PPN) framework: i.e., the metric is static and spherically symmetric, and can be written as a Taylor series in m/r, where m is the gravitational radius of the compact object. Working invariantly, we compu... |
0906.5153 | Lee Lindblom | Lee Lindblom | Optimal Calibration Accuracy for Gravitational Wave Detectors | v2: minor changes, updated to version accepted in Phys. Rev. D | null | 10.1103/PhysRevD.80.042005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Calibration errors in the response function of a gravitational wave detector
degrade its ability to detect and then to measure the properties of any
detected signals. This paper derives the needed levels of calibration accuracy
for each of these data-analysis tasks. The levels derived here are optimal in
the sense th... | [
{
"created": "Sun, 28 Jun 2009 18:19:58 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Aug 2009 20:35:00 GMT",
"version": "v2"
}
] | 2015-05-13 | [
[
"Lindblom",
"Lee",
""
]
] | Calibration errors in the response function of a gravitational wave detector degrade its ability to detect and then to measure the properties of any detected signals. This paper derives the needed levels of calibration accuracy for each of these data-analysis tasks. The levels derived here are optimal in the sense that... |
1507.08546 | Oleg Tsupko | G. S. Bisnovatyi-Kogan and O. Yu. Tsupko | Regular and chaotic dynamics of non-spherical bodies. Zeldovich's
pancakes and emission of very long gravitational waves | Review for special issue: 'Macroscopic randomness in astrophysical
plasmas: The legacy and vision of Ya. B. Zeldovich'; see also our previous
papers: arXiv:astro-ph/0212268, arXiv:astro-ph/0410573,
arXiv:astro-ph/0512309, arXiv:0801.2538, arXiv:0809.1007 | Journal of Plasma Physics / Volume 81 / Issue 05 / October 2015,
395810501 (29 pages) | 10.1017/S0022377815000525 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we review a recently developed approximate method for
investigation of dynamics of compressible ellipsoidal figures. Collapse and
subsequent behaviour are described by a system of ordinary differential
equations for time evolution of semi-axes of a uniformly rotating, three-axis,
uniform-density ellipso... | [
{
"created": "Fri, 24 Jul 2015 15:23:11 GMT",
"version": "v1"
}
] | 2015-08-03 | [
[
"Bisnovatyi-Kogan",
"G. S.",
""
],
[
"Tsupko",
"O. Yu.",
""
]
] | In this paper we review a recently developed approximate method for investigation of dynamics of compressible ellipsoidal figures. Collapse and subsequent behaviour are described by a system of ordinary differential equations for time evolution of semi-axes of a uniformly rotating, three-axis, uniform-density ellipsoid... |
1102.0894 | Stefano Viaggiu | Luca Tomassini, Stefano Viaggiu | Physically motivated uncertainty relations at the Planck length for an
emergent non commutative spacetime | Final version published in "Class. Quantum Grav." | Class. Quantum Grav. 28 (2011) 075001 | 10.1088/0264-9381/28/7/075001 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive new space-time uncertainty relations (STUR) at the fundamental
Planck length $L_P$ from quantum mechanics and general relativity (GR), both in
flat and curved backgrounds. Contrary to claims present in the literature, our
approach suggests that no minimal uncertainty appears for lengths, but instead
for min... | [
{
"created": "Fri, 4 Feb 2011 12:24:48 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Mar 2011 12:22:26 GMT",
"version": "v2"
}
] | 2011-03-02 | [
[
"Tomassini",
"Luca",
""
],
[
"Viaggiu",
"Stefano",
""
]
] | We derive new space-time uncertainty relations (STUR) at the fundamental Planck length $L_P$ from quantum mechanics and general relativity (GR), both in flat and curved backgrounds. Contrary to claims present in the literature, our approach suggests that no minimal uncertainty appears for lengths, but instead for minim... |
gr-qc/0107051 | Carlos F. Sopuerta | Philippos Papadopoulos and Carlos F. Sopuerta (RCG, Portsmouth U.) | Evolution systems for non-linear perturbations of background geometries | 12 pages, 3 figures, Revtex v3.0. Revised version to appear in
Physical Review D | Phys.Rev. D65 (2002) 044008 | 10.1103/PhysRevD.65.044008 | null | gr-qc | null | The formulation of the initial value problem for the Einstein equations is at
the heart of obtaining interesting new solutions using numerical relativity and
still very much under theoretical and applied scrutiny. We develop a
specialised background geometry approach, for systems where there is
non-trivial a priori k... | [
{
"created": "Fri, 13 Jul 2001 15:16:18 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Oct 2001 17:22:36 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Papadopoulos",
"Philippos",
"",
"RCG, Portsmouth U."
],
[
"Sopuerta",
"Carlos F.",
"",
"RCG, Portsmouth U."
]
] | The formulation of the initial value problem for the Einstein equations is at the heart of obtaining interesting new solutions using numerical relativity and still very much under theoretical and applied scrutiny. We develop a specialised background geometry approach, for systems where there is non-trivial a priori kno... |
gr-qc/0304097 | Ron Wiltshire | Ron Wiltshire | Slowly rotating, compact fluid sources embedded in Kerr empty space-time | null | null | 10.1023/B:GERG.0000018288.52206.ea | null | gr-qc | null | Spherically symmetric static fluid sources are endowed with rotation and
embedded in Kerr empty space-time up to an including quadratic terms in an
angular velocity parameter using Darmois junction conditions. Einstein's
equation's for the system are developed in terms of linear ordinary
differential equations. The b... | [
{
"created": "Fri, 25 Apr 2003 08:32:02 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Wiltshire",
"Ron",
""
]
] | Spherically symmetric static fluid sources are endowed with rotation and embedded in Kerr empty space-time up to an including quadratic terms in an angular velocity parameter using Darmois junction conditions. Einstein's equation's for the system are developed in terms of linear ordinary differential equations. The bou... |
2112.05408 | Basundhara Ghosh | Chitrak Sarkar, Arunoday Sarkar, Basundhara Ghosh and Buddhadeb Ghosh | Can breakdown of perturbation in the $\alpha$-attractor inflation lead
to PBH formation? | 29 pages, 11 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | With the basic $\alpha$-attractor potentials, we investigate an inflationary
regime in the high-$k$ limit, where the cosmological perturbation breaks down
due to large enhancement in the scalar power spectrum and generation of large
negative values of the Bardeen potential. We analyze that, this deep
sub-horizon regi... | [
{
"created": "Fri, 10 Dec 2021 09:28:17 GMT",
"version": "v1"
},
{
"created": "Sun, 6 Mar 2022 07:14:00 GMT",
"version": "v2"
}
] | 2022-03-08 | [
[
"Sarkar",
"Chitrak",
""
],
[
"Sarkar",
"Arunoday",
""
],
[
"Ghosh",
"Basundhara",
""
],
[
"Ghosh",
"Buddhadeb",
""
]
] | With the basic $\alpha$-attractor potentials, we investigate an inflationary regime in the high-$k$ limit, where the cosmological perturbation breaks down due to large enhancement in the scalar power spectrum and generation of large negative values of the Bardeen potential. We analyze that, this deep sub-horizon regime... |
1405.7627 | Pablo Galindo Salgado | Pablo Galindo and Marc Mars | McGehee regularization of general SO(3)-invariant potentials and
applications to stationary and spherically symmetric spacetimes | LaTeX file, 37 pages, 11 figures | Class. Quantum Grav. 31 (2014) 245008 | 10.1088/0264-9381/31/24/245008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The McGehee regularization is a method to study the singularity at the origin
of the dynamical system describing a point particle in a plane moving under the
action of a power-law potential. It was used by Belbruno and Pretorius to
perform a dynamical system regularization of the singularity at the center of
the moti... | [
{
"created": "Thu, 29 May 2014 17:42:05 GMT",
"version": "v1"
}
] | 2014-12-03 | [
[
"Galindo",
"Pablo",
""
],
[
"Mars",
"Marc",
""
]
] | The McGehee regularization is a method to study the singularity at the origin of the dynamical system describing a point particle in a plane moving under the action of a power-law potential. It was used by Belbruno and Pretorius to perform a dynamical system regularization of the singularity at the center of the motion... |
gr-qc/9601039 | Shobit Mahajan Dr. | Daksh Lohiya, Annu Batra, Sameer Mehra, Shobhit Mahajan, Amitabha
Mukherjee | Studies in Structure Formation in theories with a repulsive long range
gravitational force | Normal Tex, 7 pages, 5 figures available from the authors | null | 10.1080/10556799708202991 | DUCOS-96-001 | gr-qc | null | This article reports on emergence of structures in a class of alternative
theories of gravity. These theories do not have any horizon, flatness, initial
cosmological singularity and (possibly) quantization problems. The model is
characterised by a dynamically induced gravitational constant with a ``wrong''
sign corre... | [
{
"created": "Thu, 25 Jan 1996 08:20:52 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Lohiya",
"Daksh",
""
],
[
"Batra",
"Annu",
""
],
[
"Mehra",
"Sameer",
""
],
[
"Mahajan",
"Shobhit",
""
],
[
"Mukherjee",
"Amitabha",
""
]
] | This article reports on emergence of structures in a class of alternative theories of gravity. These theories do not have any horizon, flatness, initial cosmological singularity and (possibly) quantization problems. The model is characterised by a dynamically induced gravitational constant with a ``wrong'' sign corresp... |
2201.03569 | Daniel Mayerson | Kwinten Fransen, Daniel R. Mayerson | On Detecting Equatorial Symmetry Breaking with LISA | 16 pages + appendices; 2 figures and 4 tables | null | 10.1103/PhysRevD.106.064035 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The equatorial symmetry of the Kerr black hole is generically broken in
models of quantum gravity. Nevertheless, most phenomenological models start
from the assumption of equatorial symmetry, and little attention has been given
to the observability of this smoking gun signature of beyond-GR physics.
Extreme mass-rati... | [
{
"created": "Mon, 10 Jan 2022 19:00:01 GMT",
"version": "v1"
}
] | 2022-10-05 | [
[
"Fransen",
"Kwinten",
""
],
[
"Mayerson",
"Daniel R.",
""
]
] | The equatorial symmetry of the Kerr black hole is generically broken in models of quantum gravity. Nevertheless, most phenomenological models start from the assumption of equatorial symmetry, and little attention has been given to the observability of this smoking gun signature of beyond-GR physics. Extreme mass-ratio ... |
gr-qc/0606082 | Mikhail Kagan | Martin Bojowald and Mikhail Kagan | Loop cosmological implications of a non-minimally coupled scalar field | 10 pages, 4 figures | Phys.Rev. D74 (2006) 044033 | 10.1103/PhysRevD.74.044033 | IGPG-06/6-2 | gr-qc astro-ph | null | Non-minimal actions with matter represented by a scalar field coupled to
gravity are considered in the context of a homogeneous and isotropic universe.
The coupling is of the form $-\xi/2 \phi^2 R$. The possibility of successful
inflation is investigated taking into account features of loop cosmology. For
that end a ... | [
{
"created": "Mon, 19 Jun 2006 20:23:59 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bojowald",
"Martin",
""
],
[
"Kagan",
"Mikhail",
""
]
] | Non-minimal actions with matter represented by a scalar field coupled to gravity are considered in the context of a homogeneous and isotropic universe. The coupling is of the form $-\xi/2 \phi^2 R$. The possibility of successful inflation is investigated taking into account features of loop cosmology. For that end a co... |
1001.1180 | Gabriel Abreu | Gabriel Abreu (Victoria University of Wellington), Matt Visser
(Victoria University of Wellington) | The quantum interest conjecture in (3+1)-dimensional Minkowski space | 3 pages. Prepared for the proceedings of the 12th Marcel Grossmann
conference. (Paris, July 2009.) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quantum inequalities, and the closely related quantum interest
conjecture, impose restrictions on the distribution of the energy density
measured by any time-like observer, potentially preventing the existence of
exotic phenomena such as Alcubierre warp-drives or traversable wormholes. It
has already been proved ... | [
{
"created": "Thu, 7 Jan 2010 23:18:19 GMT",
"version": "v1"
}
] | 2010-01-11 | [
[
"Abreu",
"Gabriel",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | The quantum inequalities, and the closely related quantum interest conjecture, impose restrictions on the distribution of the energy density measured by any time-like observer, potentially preventing the existence of exotic phenomena such as Alcubierre warp-drives or traversable wormholes. It has already been proved th... |
2204.08533 | Boris Goncharov | Boris Goncharov, Alexander H. Nitz, Jan Harms | Utilizing the null stream of the Einstein Telescope | 15 pages, 7 figures | Phys. Rev. D 105, 122007 (2022) | 10.1103/PhysRevD.105.122007 | null | gr-qc astro-ph.HE astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Among third-generation ground-based gravitational-wave detectors proposed for
the next decade, the Einstein Telescope provides a unique kind of null stream
$\unicode{x2014}$ the signal-free linear combination of data $\unicode{x2014}$
that enables otherwise inaccessible tests of the noise models. We project and
showc... | [
{
"created": "Mon, 18 Apr 2022 19:34:12 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Jun 2022 07:09:08 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Jun 2022 13:57:49 GMT",
"version": "v3"
},
{
"created": "Mon, 14 Nov 2022 15:32:18 GMT",
"version": "v4"
}
] | 2022-11-15 | [
[
"Goncharov",
"Boris",
""
],
[
"Nitz",
"Alexander H.",
""
],
[
"Harms",
"Jan",
""
]
] | Among third-generation ground-based gravitational-wave detectors proposed for the next decade, the Einstein Telescope provides a unique kind of null stream $\unicode{x2014}$ the signal-free linear combination of data $\unicode{x2014}$ that enables otherwise inaccessible tests of the noise models. We project and showcas... |
1007.1754 | Luca Baiotti | Luca Baiotti, Masaru Shibata, Tetsuro Yamamoto | Binary neutron-star mergers with Whisky and SACRA: First quantitative
comparison of results from independent general-relativistic hydrodynamics
codes | Published on Phys. Rev. D | Phys.Rev.D82:064015,2010 | 10.1103/PhysRevD.82.064015 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the first quantitative comparison of two independent
general-relativistic hydrodynamics codes, the Whisky code and the SACRA code.
We compare the output of simulations starting from the same initial data and
carried out with the configuration (numerical methods, grid setup, resolution,
gauges) which for ea... | [
{
"created": "Sun, 11 Jul 2010 03:34:15 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Sep 2010 01:23:21 GMT",
"version": "v2"
}
] | 2014-11-21 | [
[
"Baiotti",
"Luca",
""
],
[
"Shibata",
"Masaru",
""
],
[
"Yamamoto",
"Tetsuro",
""
]
] | We present the first quantitative comparison of two independent general-relativistic hydrodynamics codes, the Whisky code and the SACRA code. We compare the output of simulations starting from the same initial data and carried out with the configuration (numerical methods, grid setup, resolution, gauges) which for each... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.