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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1301.7646 | Huguet Eric | E. Huguet, J. Renaud | Conformally invariant formalism for the electromagnetic field with
currents in Robertson-Walker spaces | Accepted for publication in J. Math Phys. 11 pages, 2 figures, revtex
4 | J. Math Phys., 54, 022304 (2013 | 10.1063/1.4791688 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the Laplace-Beltrami equation $\square_6 a =j$ in
$(\setR^6,\eta)$, $\eta := \mathrm{diag}(+----+)$, leads under very moderate
assumptions to both the Maxwell equations and the conformal Eastwood-Singer
gauge condition on conformally flat spaces including the spaces with a
Robertson-Walker metric. This r... | [
{
"created": "Thu, 31 Jan 2013 15:33:32 GMT",
"version": "v1"
}
] | 2015-06-12 | [
[
"Huguet",
"E.",
""
],
[
"Renaud",
"J.",
""
]
] | We show that the Laplace-Beltrami equation $\square_6 a =j$ in $(\setR^6,\eta)$, $\eta := \mathrm{diag}(+----+)$, leads under very moderate assumptions to both the Maxwell equations and the conformal Eastwood-Singer gauge condition on conformally flat spaces including the spaces with a Robertson-Walker metric. This res... |
gr-qc/0502100 | Jonathan R. Gair | Linqing Wen and Jonathan R Gair | Detecting extreme mass ratio inspirals with LISA using time-frequency
methods | 9 pages, 3 figures, accepted for publication in proceedings of 5th
International LISA Symposium | Class.Quant.Grav. 22 (2005) S445-S452 | 10.1088/0264-9381/22/10/041 | null | gr-qc astro-ph | null | The inspirals of stellar-mass compact objects into supermassive black holes
are some of the most important sources for LISA. Detection techniques based on
fully coherent matched filtering have been shown to be computationally
intractable. We describe an efficient and robust detection method that utilizes
the time-fre... | [
{
"created": "Thu, 24 Feb 2005 03:11:51 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Wen",
"Linqing",
""
],
[
"Gair",
"Jonathan R",
""
]
] | The inspirals of stellar-mass compact objects into supermassive black holes are some of the most important sources for LISA. Detection techniques based on fully coherent matched filtering have been shown to be computationally intractable. We describe an efficient and robust detection method that utilizes the time-frequ... |
2010.12612 | Maximiliano Isi | Maximiliano Isi, Simone Mastrogiovanni, Matthew Pitkin, and Ornella
Juliana Piccinni | Establishing the significance of continuous gravitational-wave
detections from known pulsars | 17 pages, 10 figures | Phys. Rev. D 102, 123027 (2020) | 10.1103/PhysRevD.102.123027 | LIGO-P2000413 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a method for assigning a statistical significance to detection
candidates in targeted searches for continuous gravitational waves from known
pulsars, without assuming the detector noise is Gaussian and stationary. We
take advantage of the expected Doppler phase modulation of the signal induced
by Earth's o... | [
{
"created": "Fri, 23 Oct 2020 18:51:12 GMT",
"version": "v1"
}
] | 2021-01-04 | [
[
"Isi",
"Maximiliano",
""
],
[
"Mastrogiovanni",
"Simone",
""
],
[
"Pitkin",
"Matthew",
""
],
[
"Piccinni",
"Ornella Juliana",
""
]
] | We present a method for assigning a statistical significance to detection candidates in targeted searches for continuous gravitational waves from known pulsars, without assuming the detector noise is Gaussian and stationary. We take advantage of the expected Doppler phase modulation of the signal induced by Earth's orb... |
gr-qc/0608058 | Yun-Song Piao | Yun-Song Piao and Yuan-Zhong Zhang | On Primordial Perturbations of Test Scalar Fields | 4 pages, no figures, clarifications and refs. added, typos corrected,
to publish in PRD | Phys.Rev.D75:027301,2007 | 10.1103/PhysRevD.75.027301 | null | gr-qc | null | The primordial perturbations of test scalar fields not affecting the
evolution of background may be very interesting since they can be transferred
to the curvature perturbations by some mechanisms, and thus under certain
condition can be responsible for the structure formation of observable
universe. In this brief re... | [
{
"created": "Fri, 11 Aug 2006 06:15:07 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Nov 2006 13:10:09 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Piao",
"Yun-Song",
""
],
[
"Zhang",
"Yuan-Zhong",
""
]
] | The primordial perturbations of test scalar fields not affecting the evolution of background may be very interesting since they can be transferred to the curvature perturbations by some mechanisms, and thus under certain condition can be responsible for the structure formation of observable universe. In this brief repo... |
2109.12229 | Gil de Oliveira-Neto | G. Oliveira-Neto, D. L. Canedo and G. A. Monerat | An anisotropic Kantowski-Sachs universe with radiation, dust and a
phantom fluid | The paper has 32 pages and 19 figures | null | 10.1007/s13538-022-01137-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work, we study the dynamical evolution of an homogeneous and
anisotropic KS cosmological model, considering general relativity as the
gravitational theory, such that there are three different perfect fluids in the
matter sector. They are radiation, dust and phantom fluid. Our main motivation
is determi... | [
{
"created": "Fri, 24 Sep 2021 23:05:32 GMT",
"version": "v1"
}
] | 2022-06-15 | [
[
"Oliveira-Neto",
"G.",
""
],
[
"Canedo",
"D. L.",
""
],
[
"Monerat",
"G. A.",
""
]
] | In the present work, we study the dynamical evolution of an homogeneous and anisotropic KS cosmological model, considering general relativity as the gravitational theory, such that there are three different perfect fluids in the matter sector. They are radiation, dust and phantom fluid. Our main motivation is determini... |
1501.04967 | Ivica Smoli\'c | Ivica Smoli\'c | Symmetry inheritance of scalar fields | 22 pages; revised, published version with new results about
non-canonical scalar fields | Class. Quantum Grav. 32 (2015) 145010 | 10.1088/0264-9381/32/14/145010 | ZTF-EP-15-03 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Matter fields don't necessarily have to share the symmetries with the
spacetime they live in. When this happens, we speak of the symmetry inheritance
of fields. In this paper we classify the obstructions of symmetry inheritance
by the scalar fields, both real and complex, and look more closely at the
special cases of... | [
{
"created": "Tue, 20 Jan 2015 21:00:11 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Jul 2015 20:00:11 GMT",
"version": "v2"
}
] | 2015-07-09 | [
[
"Smolić",
"Ivica",
""
]
] | Matter fields don't necessarily have to share the symmetries with the spacetime they live in. When this happens, we speak of the symmetry inheritance of fields. In this paper we classify the obstructions of symmetry inheritance by the scalar fields, both real and complex, and look more closely at the special cases of s... |
gr-qc/0505060 | D. Petroff | Marcus Ansorg and David Petroff | Black Holes Surrounded by Uniformly Rotating Rings | 12 pages, 14 figures, revtex, v4: minor changes, Eq. (17) corrected,
corresponds to version in PRD | Phys.Rev. D72 (2005) 024019 | 10.1103/PhysRevD.72.024019 | null | gr-qc | null | Highly accurate numerical solutions to the problem of Black Holes surrounded
by uniformly rotating rings in axially symmetric, stationary spacetimes are
presented. The numerical methods developed to handle the problem are discussed
in some detail. Related Newtonian problems are described and numerical results
provide... | [
{
"created": "Thu, 12 May 2005 15:22:34 GMT",
"version": "v1"
},
{
"created": "Tue, 17 May 2005 12:04:05 GMT",
"version": "v2"
},
{
"created": "Thu, 16 Jun 2005 15:25:59 GMT",
"version": "v3"
},
{
"created": "Thu, 18 Aug 2005 15:52:27 GMT",
"version": "v4"
}
] | 2009-11-11 | [
[
"Ansorg",
"Marcus",
""
],
[
"Petroff",
"David",
""
]
] | Highly accurate numerical solutions to the problem of Black Holes surrounded by uniformly rotating rings in axially symmetric, stationary spacetimes are presented. The numerical methods developed to handle the problem are discussed in some detail. Related Newtonian problems are described and numerical results provided,... |
0811.2983 | Alejandro Corichi | Alejandro Corichi and Parampreet Singh | Reply to `Comment on "Quantum Bounce and Cosmic Recall"'
[arXiv:0811.2790] | 2 pages | Phys.Rev.Lett.101:209002,2008 | 10.1103/PhysRevLett.101.209002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A recent Comment [arXiv:0811.2790] on the Letter 'Quantum Bounce and Cosmic
Recall' by the authors is shown to arise from an incorrect understanding of the
issues at hand and of our analysis. The conclusions of Bojowald's Comment are
shown to add little to our work, to be irrelevant at best, and are further
shown to ... | [
{
"created": "Tue, 18 Nov 2008 20:27:31 GMT",
"version": "v1"
}
] | 2008-12-18 | [
[
"Corichi",
"Alejandro",
""
],
[
"Singh",
"Parampreet",
""
]
] | A recent Comment [arXiv:0811.2790] on the Letter 'Quantum Bounce and Cosmic Recall' by the authors is shown to arise from an incorrect understanding of the issues at hand and of our analysis. The conclusions of Bojowald's Comment are shown to add little to our work, to be irrelevant at best, and are further shown to be... |
2012.12452 | Yisong Yang Professor | Xiangqin Zhang and Yisong Yang | Yang--Mills Monopoles in Extremal Reissner--Nordstr\"{o}m Black Hole
Metric | 16 pages, 2 figure | Journal of Mathematical Physics 62 (2021) 052304 | 10.1063/5.0046290 | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/publicdomain/zero/1.0/ | We show that the closed-form monotone solution linking two different vacuum
states, for the exterior Yang--Mills wave equation over the extremal
Reissner--Nordstr\"{o}m spacetime found in a recent work of Bizo\'{n} and Kahl,
is the unique solution to an associated domain-wall type energy minimization
problem. We also... | [
{
"created": "Wed, 23 Dec 2020 02:19:23 GMT",
"version": "v1"
},
{
"created": "Sun, 2 May 2021 02:45:03 GMT",
"version": "v2"
}
] | 2021-05-31 | [
[
"Zhang",
"Xiangqin",
""
],
[
"Yang",
"Yisong",
""
]
] | We show that the closed-form monotone solution linking two different vacuum states, for the exterior Yang--Mills wave equation over the extremal Reissner--Nordstr\"{o}m spacetime found in a recent work of Bizo\'{n} and Kahl, is the unique solution to an associated domain-wall type energy minimization problem. We also d... |
2103.16508 | Phillip Dennis | Phillip W. Dennis | Remarks on singular hypersurfaces and thin shells in general relativity | 8 pages, 3 figures, submitted to Physical Review D | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this note several formulae that follow from W. Israel's thin shell
equation of motion are derived. We review the main results of Israel's seminal
papers. The Israel equation of motion is solved for the three regimes of total
energy E<0, E=0, and E>0. This family of solutions is analogous to the three
classes of so... | [
{
"created": "Tue, 30 Mar 2021 17:09:12 GMT",
"version": "v1"
}
] | 2021-03-31 | [
[
"Dennis",
"Phillip W.",
""
]
] | In this note several formulae that follow from W. Israel's thin shell equation of motion are derived. We review the main results of Israel's seminal papers. The Israel equation of motion is solved for the three regimes of total energy E<0, E=0, and E>0. This family of solutions is analogous to the three classes of solu... |
gr-qc/0610074 | Leonardo Modesto | Leonardo Modesto | Gravitational collapse in loop quantum gravity | 16 pages, 2 figures | Int.J.Theor.Phys.47:357-373,2008 | 10.1007/s10773-007-9458-3 | null | gr-qc hep-th | null | In this paper we study the gravitational collapse in loop quantum gravity. We
consider the space-time region inside the Schwarzschild black hole event
horizon and we divide this region in two parts, the first one where the matter
(dust matter) is localized and the other (outside) where the metric is
Kantowski-Sachs t... | [
{
"created": "Sat, 14 Oct 2006 10:05:50 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Modesto",
"Leonardo",
""
]
] | In this paper we study the gravitational collapse in loop quantum gravity. We consider the space-time region inside the Schwarzschild black hole event horizon and we divide this region in two parts, the first one where the matter (dust matter) is localized and the other (outside) where the metric is Kantowski-Sachs typ... |
1112.4252 | Yasunari Kurita | Yasunari Kurita, Ken-ichi Nakao | Dynamical instability in a relativistic cylindrical shell composed of
counter rotating particles | 21 pages, 7 figures | Prog. Theor. Phys. 128 (2012), 191-211 | 10.1143/PTP.128.191 | OCU-PHYS-360, AP-GR-95 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a perturbative analysis for an infinitesimally thin cylindrical shell
composed of counter rotating collisionless particles, originally devised by
Apostolatos and Thorne. They found a static solution of the shell and concluded
by C-energy argument that it is stable. Recently, the present authors and Ida
reanal... | [
{
"created": "Mon, 19 Dec 2011 07:18:50 GMT",
"version": "v1"
}
] | 2012-08-03 | [
[
"Kurita",
"Yasunari",
""
],
[
"Nakao",
"Ken-ichi",
""
]
] | We give a perturbative analysis for an infinitesimally thin cylindrical shell composed of counter rotating collisionless particles, originally devised by Apostolatos and Thorne. They found a static solution of the shell and concluded by C-energy argument that it is stable. Recently, the present authors and Ida reanalyz... |
1008.1598 | Allen Stern | Mansour Haghighat and Allen Stern | Charge Enhancement of Noncommutative Gravity | 8 pages | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Noncommutative corrections to the metric tensor can be significantly enhanced
by the presence of electromagnetic fields. Neutron stars, with their large
magnetic fields, are possible candidates to search for such effects. We use
precision measurements of the gravitational redshift from pulsars to put bounds
on the pa... | [
{
"created": "Mon, 9 Aug 2010 21:33:25 GMT",
"version": "v1"
}
] | 2010-08-11 | [
[
"Haghighat",
"Mansour",
""
],
[
"Stern",
"Allen",
""
]
] | Noncommutative corrections to the metric tensor can be significantly enhanced by the presence of electromagnetic fields. Neutron stars, with their large magnetic fields, are possible candidates to search for such effects. We use precision measurements of the gravitational redshift from pulsars to put bounds on the para... |
gr-qc/0306115 | Abhay Ashtekar | Abhay Ashtekar | How Black Holes Grow | Text of a plenary talk given at the conference on "Mathematical
Physics, General Relativity and Cosmology", held in honor of Professor Jerzy
Plebanski in Mexico city, in September of 2002. To appear in the Proceedings.
Results reported here were obtained jointly with Badri Krishnan and
summarized very briefly i... | null | null | CGPG-03-06/3, NSF-KITP-03-45 | gr-qc | null | A summary of how black holes grow in full, non-linear general relativity is
presented. Specifically, a notion of "dynamical horizons" is introduced and
expressions of fluxes of energy and angular momentum carried by gravitational
waves across these horizons are obtained. Fluxes are local and the energy flux
is positi... | [
{
"created": "Wed, 25 Jun 2003 21:59:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ashtekar",
"Abhay",
""
]
] | A summary of how black holes grow in full, non-linear general relativity is presented. Specifically, a notion of "dynamical horizons" is introduced and expressions of fluxes of energy and angular momentum carried by gravitational waves across these horizons are obtained. Fluxes are local and the energy flux is positive... |
1810.03521 | Nicholas Loutrel | Nicholas Loutrel, Samuel Liebersbach, Nicolas Yunes, and Neil Cornish | The Eccentric Behavior of Inspiraling Compact Binaries | 63 pages, 7 figures, updated to reflect the published version | Classical & Quantum Gravity, Volume 36, Number 2, 2018 | 10.1088/1361-6382/aaf2a9 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Eccentricity of binary systems is not a gauge invariant quantity, but has an
important impact on the observed gravitational wave signal of such systems,
generating power in all possible harmonics of the orbital period. We here
clarify the possible discrepancies between different eccentricity parameters
used to descri... | [
{
"created": "Mon, 8 Oct 2018 15:08:43 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Oct 2018 14:26:11 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Jan 2019 19:23:27 GMT",
"version": "v3"
}
] | 2019-01-21 | [
[
"Loutrel",
"Nicholas",
""
],
[
"Liebersbach",
"Samuel",
""
],
[
"Yunes",
"Nicolas",
""
],
[
"Cornish",
"Neil",
""
]
] | Eccentricity of binary systems is not a gauge invariant quantity, but has an important impact on the observed gravitational wave signal of such systems, generating power in all possible harmonics of the orbital period. We here clarify the possible discrepancies between different eccentricity parameters used to describe... |
1305.3922 | Jos\'e Villanueva | J. R. Villanueva and Marco Olivares | On the Null Trajectories in Conformal Weyl Gravity | 5 Figures | JCAP 06 (2013) 040 | 10.1088/1475-7516/2013/06/040 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we find analytical solutions to the null geodesics around a
black hole in the conformal Weyl gravity. Exact expressions for the horizons
are found, and they depend on the cosmological constant and the coupling
constants of the conformal Weyl gravity. Then, we study the radial motion from
the point of vie... | [
{
"created": "Thu, 16 May 2013 20:04:32 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Jun 2013 21:10:26 GMT",
"version": "v2"
}
] | 2013-06-26 | [
[
"Villanueva",
"J. R.",
""
],
[
"Olivares",
"Marco",
""
]
] | In this work we find analytical solutions to the null geodesics around a black hole in the conformal Weyl gravity. Exact expressions for the horizons are found, and they depend on the cosmological constant and the coupling constants of the conformal Weyl gravity. Then, we study the radial motion from the point of view ... |
1907.00395 | Ignazio Ciufolini | Ignazio Ciufolini, Richard Matzner, Antonio Paolozzi, Erricos C.
Pavlis, Giampiero Sindoni, John Ries, Vahe Gurzadyan, Rolf Koenig | Satellite Laser-Ranging as a Probe of Fundamental Physics | 24 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Satellite laser-ranging is successfully used in space geodesy, geodynamics
and Earth sciences; and to test fundamental physics and specific features of
General Relativity. We present a confirmation to approximately one part in a
billion of the fundamental weak equivalence principle (uniqueness of free fall)
in the Ea... | [
{
"created": "Sun, 30 Jun 2019 15:29:57 GMT",
"version": "v1"
}
] | 2019-07-02 | [
[
"Ciufolini",
"Ignazio",
""
],
[
"Matzner",
"Richard",
""
],
[
"Paolozzi",
"Antonio",
""
],
[
"Pavlis",
"Erricos C.",
""
],
[
"Sindoni",
"Giampiero",
""
],
[
"Ries",
"John",
""
],
[
"Gurzadyan",
"Vahe",
""
... | Satellite laser-ranging is successfully used in space geodesy, geodynamics and Earth sciences; and to test fundamental physics and specific features of General Relativity. We present a confirmation to approximately one part in a billion of the fundamental weak equivalence principle (uniqueness of free fall) in the Eart... |
2202.08671 | Sunil Choudhary | Sunil Choudhary, Anupreeta More, Sudhagar Suyamprakasam, Sukanta Bose | SiGMa-Net: Deep learning network to distinguish binary black hole
signals from short-duration noise transients | 11 pages, 8 figures and 2 tables. Reviewed by LIGO Scientific
Collaboration (LSC) with preprint number LIGO-P2100485 | null | 10.1103/PhysRevD.107.024030 | null | gr-qc astro-ph.IM physics.data-an | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Blip glitches, a type of short-duration noise transient in the LIGO--Virgo
data, are a nuisance for the binary black hole (BBH) searches. They affect the
BBH search sensitivity significantly because their time-domain morphologies are
very similar, and that creates difficulty in vetoing them. In this work, we
construc... | [
{
"created": "Thu, 17 Feb 2022 14:08:04 GMT",
"version": "v1"
}
] | 2023-01-31 | [
[
"Choudhary",
"Sunil",
""
],
[
"More",
"Anupreeta",
""
],
[
"Suyamprakasam",
"Sudhagar",
""
],
[
"Bose",
"Sukanta",
""
]
] | Blip glitches, a type of short-duration noise transient in the LIGO--Virgo data, are a nuisance for the binary black hole (BBH) searches. They affect the BBH search sensitivity significantly because their time-domain morphologies are very similar, and that creates difficulty in vetoing them. In this work, we construct ... |
gr-qc/9310017 | Dario Nunez | D. Nunez, and H. Quevedo | Stationary Axisymmetric Fields as Two-Dimensional Geodesics | 18 pages. Submitted JMPh | null | null | null | gr-qc | null | Einstein's equations for stationary axisymmetric fields are reformulated as
the equations for affine geodesics in a two--dimensional space. The affine
collineations of this space are investigated and used to relate explicit
solutions of Einstein's equations with different physical properties.
Particularly, the soluti... | [
{
"created": "Fri, 8 Oct 1993 16:47:57 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Nunez",
"D.",
""
],
[
"Quevedo",
"H.",
""
]
] | Einstein's equations for stationary axisymmetric fields are reformulated as the equations for affine geodesics in a two--dimensional space. The affine collineations of this space are investigated and used to relate explicit solutions of Einstein's equations with different physical properties. Particularly, the solution... |
gr-qc/9811044 | Bijan Saha | B. Saha | Solitons of Induced Scalar Field and Their Stability | RevTex, 12 pages, 3 Figures, Submitted to Gravitation and Cosmology | Spacetime & Substance journal, 2 N 1(1), (2000) 27-34 | null | null | gr-qc | null | Exact particle-like static, spherically and/or cylindrically symmetric
solutions to the equations of interacting scalar and electromagnetic field
system have been obtained. We considered Freedman-Robertson-Walker (FRW)
space-time as an external homogenous and isotropic gravitational field whereas
the homogeneous and ... | [
{
"created": "Fri, 13 Nov 1998 13:28:34 GMT",
"version": "v1"
}
] | 2019-04-22 | [
[
"Saha",
"B.",
""
]
] | Exact particle-like static, spherically and/or cylindrically symmetric solutions to the equations of interacting scalar and electromagnetic field system have been obtained. We considered Freedman-Robertson-Walker (FRW) space-time as an external homogenous and isotropic gravitational field whereas the homogeneous and an... |
gr-qc/0609110 | Amber Stuver | Amber L. Stuver and Lee Samuel Finn | A First Comparison of SLOPE and Other LIGO Burst Event Trigger
Generators | 10 Pages, 5 Figures, Presented at the 10th Gravitational Wave Data
Analysis Workshop (GWDAW-10), 14-17 December 2005 at the University of Texas,
Brownsville | Class.Quant.Grav. 23 (2006) S733-S740 | 10.1088/0264-9381/23/19/S12 | LIGO-P060037-00-Z | gr-qc | null | A number of different methods have been proposed to identify unanticipated
burst sources of gravitational waves in data arising from LIGO and other
gravitational wave detectors. When confronted with such a wide variety of
methods one is moved to ask if they are all necessary, i.e. given detector data
that is assumed ... | [
{
"created": "Sun, 24 Sep 2006 03:13:19 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Stuver",
"Amber L.",
""
],
[
"Finn",
"Lee Samuel",
""
]
] | A number of different methods have been proposed to identify unanticipated burst sources of gravitational waves in data arising from LIGO and other gravitational wave detectors. When confronted with such a wide variety of methods one is moved to ask if they are all necessary, i.e. given detector data that is assumed to... |
1906.06534 | Gaoping Long | Gaoping Long, Chun-Yen Lin, Yongge Ma | Coherent intertwiner solution of simplicity constraint in all
dimensional loop quantum gravity | null | Phys. Rev. D 100, 064065 (2019) | 10.1103/PhysRevD.100.064065 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a new treatment of the quantum simplicity constraints appearing in
the general ${SO(D+1)}$ formulation of loop quantum gravity for the
${(1+D)}$-dimensional space-time. Instead of strongly imposing the constraints,
we construct a specific form of weak solutions by employing the spin net-work
states with sp... | [
{
"created": "Sat, 15 Jun 2019 11:55:39 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Aug 2019 11:55:47 GMT",
"version": "v2"
}
] | 2019-10-09 | [
[
"Long",
"Gaoping",
""
],
[
"Lin",
"Chun-Yen",
""
],
[
"Ma",
"Yongge",
""
]
] | We propose a new treatment of the quantum simplicity constraints appearing in the general ${SO(D+1)}$ formulation of loop quantum gravity for the ${(1+D)}$-dimensional space-time. Instead of strongly imposing the constraints, we construct a specific form of weak solutions by employing the spin net-work states with spec... |
1109.6576 | Kirill Bronnikov | K.A. Bronnikov, J.C. Fabris, A. Zhidenko | On the stability of scalar-vacuum space-times | 18 pages, 5 figures. A few comments and references added. Final
version accepted at EPJC | EuroPhys J. C 71 (11), 1791 (2011) | 10.1140/epjc/s10052-011-1791-2 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the stability of static, spherically symmetric solutions to the
Einstein equations with a scalar field as the source. We describe a general
methodology of studying small radial perturbations of scalar-vacuum
configurations with arbitrary potentials V(\phi), and in particular space-times
with throats (includi... | [
{
"created": "Thu, 29 Sep 2011 16:13:36 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Oct 2011 08:46:17 GMT",
"version": "v2"
}
] | 2015-05-30 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Fabris",
"J. C.",
""
],
[
"Zhidenko",
"A.",
""
]
] | We study the stability of static, spherically symmetric solutions to the Einstein equations with a scalar field as the source. We describe a general methodology of studying small radial perturbations of scalar-vacuum configurations with arbitrary potentials V(\phi), and in particular space-times with throats (including... |
2305.16009 | Christine Cordula Dantas | Christine C. Dantas (Astrophysics Division, INPE, Brazil) | Ergodic Concepts for a Self-Organizing Trivalent Spin Network: A Path to
$(2+1)$-dimensional Black Hole Entropy | 15 pages, 2 figures. Final version, accepted for publication in
Annalen der Physik | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider, from a dynamical systems point of view, a trivalent spin network
model in Loop Quantum Gravity presenting self-organized criticality (SOC),
arising from a spin propagation dynamics. We obtain a partition function for
the domains of stability connecting gauge non-invariant avalanches, leading to
an entrop... | [
{
"created": "Thu, 25 May 2023 12:49:18 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Jul 2024 14:30:27 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Aug 2024 11:37:01 GMT",
"version": "v3"
}
] | 2024-08-09 | [
[
"Dantas",
"Christine C.",
"",
"Astrophysics Division, INPE, Brazil"
]
] | We consider, from a dynamical systems point of view, a trivalent spin network model in Loop Quantum Gravity presenting self-organized criticality (SOC), arising from a spin propagation dynamics. We obtain a partition function for the domains of stability connecting gauge non-invariant avalanches, leading to an entropy ... |
gr-qc/0301037 | George E. A. Matsas | George E. A. Matsas | Elementary particles under the lens of the black holes | 6 pages, Proceedings of the XXIII Brazilian National Meeting on
Particles Physics and Fields. To appear in special issue of the Brazilian
Journal of Physics | Braz.J.Phys. 34 (2004) 170-174 | 10.1590/S0103-97332004000200005 | null | gr-qc | null | After a brief review of the historical development and CLASSICAL properties
of the BLACK HOLES, we discuss how our present knowledge of some of their
QUANTUM properties shed light on the very concept of ELEMENTARY PARTICLE. As an
illustration, we discuss in this context the decay of accelerated protons,
which may be ... | [
{
"created": "Fri, 10 Jan 2003 12:59:32 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Matsas",
"George E. A.",
""
]
] | After a brief review of the historical development and CLASSICAL properties of the BLACK HOLES, we discuss how our present knowledge of some of their QUANTUM properties shed light on the very concept of ELEMENTARY PARTICLE. As an illustration, we discuss in this context the decay of accelerated protons, which may be al... |
1301.2501 | Jason Bates | Jason D. Bates, Hing-Tong Cho, Paul R. Anderson, B. L. Hu | Exact noise kernel for quantum fields in static de Sitter and
conformally-flat spacetimes | 21 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute exact expressions of the noise kernel, defined as the expectation
value of the symmetrized connected stress energy bitensor, for
conformally-invariant scalar fields with respect to the conformal vacuum, valid
for an arbitrary separation (timelike, spacelike and null) of points in a class
of conformally-fla... | [
{
"created": "Fri, 11 Jan 2013 13:59:30 GMT",
"version": "v1"
}
] | 2013-01-14 | [
[
"Bates",
"Jason D.",
""
],
[
"Cho",
"Hing-Tong",
""
],
[
"Anderson",
"Paul R.",
""
],
[
"Hu",
"B. L.",
""
]
] | We compute exact expressions of the noise kernel, defined as the expectation value of the symmetrized connected stress energy bitensor, for conformally-invariant scalar fields with respect to the conformal vacuum, valid for an arbitrary separation (timelike, spacelike and null) of points in a class of conformally-flat ... |
1406.5033 | Alexander Breev | A.I. Breev and A.V. Shapovalov | Yang-Mills gauge fields conserving the symmetry algebra of the Dirac
equation in a homogeneous space | 21 pages | Journal of Physics: Conference Series, Volume 563, 012004 (2014) | 10.1088/1742-6596/563/1/012004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Dirac equation with an external Yang-Mills gauge field in a
homogeneous space with an invariant metric. The Yang-Mills fields for which the
motion group of the space serves as the symmetry group for the Dirac equation
are found by comparison of the Dirac equation with an invariant matrix
differential ... | [
{
"created": "Thu, 19 Jun 2014 13:20:07 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Sep 2014 01:45:56 GMT",
"version": "v2"
}
] | 2017-01-06 | [
[
"Breev",
"A. I.",
""
],
[
"Shapovalov",
"A. V.",
""
]
] | We consider the Dirac equation with an external Yang-Mills gauge field in a homogeneous space with an invariant metric. The Yang-Mills fields for which the motion group of the space serves as the symmetry group for the Dirac equation are found by comparison of the Dirac equation with an invariant matrix differential op... |
gr-qc/9708040 | Johanna Erdmenger | J. Erdmenger and H. Osborn | Conformally Covariant Differential Operators: Symmetric Tensor Fields | 9 pages, LaTex, no figures | Class.Quant.Grav. 15 (1998) 273-280 | 10.1088/0264-9381/15/2/003 | DAMTP/97-81 | gr-qc hep-th | null | We extend previous work on conformally covariant differential operators to
consider the case of second order operators acting on symmetric traceless
tensor fields. The corresponding flat space Green function is explicitly
constructed and shown to be in accord with the requirements of conformal
invariance.
| [
{
"created": "Tue, 19 Aug 1997 09:03:31 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Erdmenger",
"J.",
""
],
[
"Osborn",
"H.",
""
]
] | We extend previous work on conformally covariant differential operators to consider the case of second order operators acting on symmetric traceless tensor fields. The corresponding flat space Green function is explicitly constructed and shown to be in accord with the requirements of conformal invariance. |
1205.1724 | Marc Mars | Marc Mars | Stability of MOTS in totally geodesic null horizons | 29 pages, no figures | null | 10.1088/0264-9381/29/14/145019 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Closed sections of totally geodesic null hypersurfaces are marginally outer
trapped surfaces (MOTS), for which a well-defined notion of stability exists.
In this paper we obtain the explicit form for the stability operator for such
MOTS and analyze in detail its properties in the particular case of
non-evolving horiz... | [
{
"created": "Tue, 8 May 2012 15:15:57 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Mars",
"Marc",
""
]
] | Closed sections of totally geodesic null hypersurfaces are marginally outer trapped surfaces (MOTS), for which a well-defined notion of stability exists. In this paper we obtain the explicit form for the stability operator for such MOTS and analyze in detail its properties in the particular case of non-evolving horizon... |
0709.3136 | Paingalil Kunjan Suresh | Rizwan ul Haq Ansari and P. K. Suresh | Bulk scalar field in DGP braneworld cosmology | 10 pages, to appear in JCAP | JCAP 0709:021,2007 | 10.1088/1475-7516/2007/09/021 | null | gr-qc | null | We investigated the effects of bulk scalar field in the braneworld
cosmological scenario. The Friedmann equations and acceleration condition in
presence of the bulk scalar field for a zero tension brane and cosmological
constant are studied. In DGP model the effective Einstein equation on the brane
is obtained with b... | [
{
"created": "Thu, 20 Sep 2007 06:00:41 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Ansari",
"Rizwan ul Haq",
""
],
[
"Suresh",
"P. K.",
""
]
] | We investigated the effects of bulk scalar field in the braneworld cosmological scenario. The Friedmann equations and acceleration condition in presence of the bulk scalar field for a zero tension brane and cosmological constant are studied. In DGP model the effective Einstein equation on the brane is obtained with bul... |
gr-qc/0211092 | Dumitru Baleanu | Dumitru Baleanu, Yurdahan Guler | 2D-gravity and the Hamilton-Jacobi formalism | 9 pages, LATEX, no figures, accepted for publication in Il Nuovo
Cimento B | Nuovo Cim.B117:917-924,2002 | null | null | gr-qc | null | Hamilton-Jacobi formalism is used to study 2D-gravity and its SL(2, R) hidden
symmetry. If the contribution of the surface term is considered the obtained
results coincide with those given by the Dirac and Faddeev-Jackiw approaches.
| [
{
"created": "Wed, 27 Nov 2002 10:27:38 GMT",
"version": "v1"
}
] | 2010-11-11 | [
[
"Baleanu",
"Dumitru",
""
],
[
"Guler",
"Yurdahan",
""
]
] | Hamilton-Jacobi formalism is used to study 2D-gravity and its SL(2, R) hidden symmetry. If the contribution of the surface term is considered the obtained results coincide with those given by the Dirac and Faddeev-Jackiw approaches. |
1805.01283 | Hossein Ghaffarnejad | Hossein Ghaffarnejad | Schwarzschild-de Sitter black hole in canonical quantization | 7 pages, 3 figure, accepted as ORAL presentation at the `7th
International Conference on Mathematical Modeling in Physical
Sciences`,August 27-31, 2018, Moscow, Russia | Journal Of Physics, Conference Series 2018 | 10.1088/1742-6596/1141/1/012048 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We solve Wheeler-De Witt (WDW) metric probability wave equation on the
apparent horizon hypersurface of the Schwarzschild de Sitter (SdS) black hole.
To do so we choose radial dependent mass function $M(r)$ for its internal
regions in the presence of a dynamical massless quantum matter scalar field
$\psi(r)$ and calc... | [
{
"created": "Thu, 5 Apr 2018 03:00:27 GMT",
"version": "v1"
}
] | 2018-12-31 | [
[
"Ghaffarnejad",
"Hossein",
""
]
] | We solve Wheeler-De Witt (WDW) metric probability wave equation on the apparent horizon hypersurface of the Schwarzschild de Sitter (SdS) black hole. To do so we choose radial dependent mass function $M(r)$ for its internal regions in the presence of a dynamical massless quantum matter scalar field $\psi(r)$ and calcul... |
1901.03064 | Cosimo Bambi | Ashutosh Tripathi, Jinli Yan, Yuchan Yang, Yunfeng Yan, Marcus
Garnham, Yu Yao, Songcheng Li, Ziyu Ding, Askar B. Abdikamalov, Dimitry
Ayzenberg, Cosimo Bambi, Thomas Dauser, Javier A. Garcia, Jiachen Jiang,
Sourabh Nampalliwar | Constraints on the spacetime metric around seven "bare" AGNs using X-ray
reflection spectroscopy | 15 pages, 12 figures. v2: refereed version | Astrophys.J. 874: 135 (2019) | 10.3847/1538-4357/ab0a00 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the study of a sample of seven "bare" active galactic nuclei (AGN)
observed with Suzaku. We interpret the spectrum of these sources with a
relativistic reflection component and we employ our model RELXILL_NK to test
the Kerr nature of their supermassive black holes. We constrain the Johannsen
deformation p... | [
{
"created": "Thu, 10 Jan 2019 09:06:38 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Apr 2019 22:05:53 GMT",
"version": "v2"
}
] | 2019-04-04 | [
[
"Tripathi",
"Ashutosh",
""
],
[
"Yan",
"Jinli",
""
],
[
"Yang",
"Yuchan",
""
],
[
"Yan",
"Yunfeng",
""
],
[
"Garnham",
"Marcus",
""
],
[
"Yao",
"Yu",
""
],
[
"Li",
"Songcheng",
""
],
[
"Ding",
"... | We present the study of a sample of seven "bare" active galactic nuclei (AGN) observed with Suzaku. We interpret the spectrum of these sources with a relativistic reflection component and we employ our model RELXILL_NK to test the Kerr nature of their supermassive black holes. We constrain the Johannsen deformation par... |
1104.0546 | Peng Chen | Peng Chen | Thermodynamic Geometry of the Born-Infeld-anti-de Sitter black holes | Latex,19 pages,14 figures | null | 10.1142/S0217751X11053742 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Thermodynamic geometry is applied to the Born-Infeld-anti-de Sitter black
hole (BIAdS) in the four dimensions, which is a nonlinear generalization of the
Reissner-Norstr\"Aom-AdS black hole (RNAdS). We compute the Weinhold as well as
the Ruppeiner scalar curvature and find that the singular points are not the
same wi... | [
{
"created": "Mon, 4 Apr 2011 12:39:20 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Apr 2011 09:17:20 GMT",
"version": "v2"
}
] | 2015-05-27 | [
[
"Chen",
"Peng",
""
]
] | Thermodynamic geometry is applied to the Born-Infeld-anti-de Sitter black hole (BIAdS) in the four dimensions, which is a nonlinear generalization of the Reissner-Norstr\"Aom-AdS black hole (RNAdS). We compute the Weinhold as well as the Ruppeiner scalar curvature and find that the singular points are not the same with... |
1103.0188 | Mariano Franco | Mariano Franco and Esteban Calzetta | Decoherence in the cosmic background radiation | 15 pages, accepted to be published in Classical and Quantum Gravity | Class.Quant.Grav.28:145024,2011 | 10.1088/0264-9381/28/14/145024 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we analyze the possibility of detecting nontrivial quantum
phenomena in observations of the temperature anisotropy of the cosmic
background radiation (CBR), for example, if the Universe could be found in a
coherent superposition of two states corresponding to different CBR
temperatures. Such observation... | [
{
"created": "Tue, 1 Mar 2011 15:08:46 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Apr 2011 15:38:03 GMT",
"version": "v2"
}
] | 2011-06-24 | [
[
"Franco",
"Mariano",
""
],
[
"Calzetta",
"Esteban",
""
]
] | In this paper we analyze the possibility of detecting nontrivial quantum phenomena in observations of the temperature anisotropy of the cosmic background radiation (CBR), for example, if the Universe could be found in a coherent superposition of two states corresponding to different CBR temperatures. Such observations ... |
gr-qc/0304040 | Jeanette E. Nelson | J.E. Nelson | Global constants in (2+1)--dimensional gravity | 14 pages, to appear in Classical and Quantum Gravity, Spacetime
Safari: Essays in Honor of Vincent Moncrief on the Classical Physics of
Strong Gravitational Fields | Class.Quant.Grav. 21 (2004) S249-S260 | 10.1088/0264-9381/21/3/015 | DFTT 8/03 | gr-qc hep-th | null | The extended conformal algebra (so)(2,3) of global, quantum, constants of
motion in 2+1 dimensional gravity with topology R x T^2 and negative
cosmological constant is reviewed. It is shown that the 10 global constants
form a complete set by expressing them in terms of two commuting spinors and
the Dirac gamma matric... | [
{
"created": "Wed, 9 Apr 2003 15:06:20 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Nelson",
"J. E.",
""
]
] | The extended conformal algebra (so)(2,3) of global, quantum, constants of motion in 2+1 dimensional gravity with topology R x T^2 and negative cosmological constant is reviewed. It is shown that the 10 global constants form a complete set by expressing them in terms of two commuting spinors and the Dirac gamma matrices... |
2309.09158 | Dr. Bikash Chandra Paul | Anirban Chanda, Bikash Chandra Roy, Kazuharu Bamba, Bikash Chandra
Paul | Observational constraints on the Emergent Universe with interacting
non-linear fluids and its stability analysis | 16 pages, 9 figures | null | null | FU-PCG-123 | gr-qc astro-ph.CO | http://creativecommons.org/publicdomain/zero/1.0/ | We investigate a flat Emergent Universe (EU) with a nonlinear equation of
state which is equivalent to three different compositions of fluids. In the EU,
initially, the evolution of the universe began with no interaction, but as time
evolves, an interaction sets in among the three fluids leading to the observed
unive... | [
{
"created": "Sun, 17 Sep 2023 04:57:31 GMT",
"version": "v1"
}
] | 2023-09-19 | [
[
"Chanda",
"Anirban",
""
],
[
"Roy",
"Bikash Chandra",
""
],
[
"Bamba",
"Kazuharu",
""
],
[
"Paul",
"Bikash Chandra",
""
]
] | We investigate a flat Emergent Universe (EU) with a nonlinear equation of state which is equivalent to three different compositions of fluids. In the EU, initially, the evolution of the universe began with no interaction, but as time evolves, an interaction sets in among the three fluids leading to the observed univers... |
2201.11607 | Gabriele Veneziano | Gabriele Veneziano and Gregory A. Vilkovisky | Angular momentum loss in gravitational scattering, radiation reaction,
and the Bondi gauge ambiguity | 13 pages, added explanations and references. Version accepted for
publication (Phys. Lett. B) | null | 10.1016/j.physletb.2022.137419 | CERN-TH-2021-210 | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Recently, Damour computed the radiation reaction on gravitational scattering
as the (linear) response to the angular momentum loss which he found to be of
${\cal O}(G^2)$ in the gravitational constant. This is a puzzle because any
amplitude calculation would produce both energy and angular momentum losses
starting on... | [
{
"created": "Thu, 27 Jan 2022 16:06:09 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Aug 2022 14:32:01 GMT",
"version": "v2"
}
] | 2022-09-07 | [
[
"Veneziano",
"Gabriele",
""
],
[
"Vilkovisky",
"Gregory A.",
""
]
] | Recently, Damour computed the radiation reaction on gravitational scattering as the (linear) response to the angular momentum loss which he found to be of ${\cal O}(G^2)$ in the gravitational constant. This is a puzzle because any amplitude calculation would produce both energy and angular momentum losses starting only... |
1106.2504 | Olivier Sarbach | N\'estor Ortiz and Olivier Sarbach | Conformal diagrams for the gravitational collapse of a spherical dust
cloud | added a new subsection with a phase space analysis, 23 pages, 8
figures | Class.Quant.Grav. 28 (2011) 235001 | 10.1088/0264-9381/28/23/235001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an algorithm for the construction of conformal coordinates in the
interior of a spherically symmetric, collapsing matter cloud in general
relativity. This algorithm is based on the numerical integration of the radial
null geodesics and a local analysis of their behavior close to the singularity.
As an appl... | [
{
"created": "Mon, 13 Jun 2011 17:45:15 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Oct 2011 16:16:40 GMT",
"version": "v2"
}
] | 2014-06-17 | [
[
"Ortiz",
"Néstor",
""
],
[
"Sarbach",
"Olivier",
""
]
] | We present an algorithm for the construction of conformal coordinates in the interior of a spherically symmetric, collapsing matter cloud in general relativity. This algorithm is based on the numerical integration of the radial null geodesics and a local analysis of their behavior close to the singularity. As an applic... |
1907.12233 | Alessandro Nagar | Alessandro Nagar, Francesco Messina, Chris Kavanagh, Georgios
Lukes-Gerakopoulos, Niels Warburton, Sebastiano Bernuzzi and Enno Harms | Factorization and resummation: A new paradigm to improve gravitational
wave amplitudes. III: the spinning test-body terms | 33 pages, 7 figures. Submitted to Phys. Rev. D | Phys. Rev. D 100, 104056 (2019) | 10.1103/PhysRevD.100.104056 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present new calculations of the energy flux of a spinning test-body on
circular orbits around a Schwarzschild black hole at linear order in the
particle spin. We compute the multipolar fluxes up to $\ell=m=6$ using two
independent numerical solvers of theTeukolsky equation, one in the time domain
and the other in ... | [
{
"created": "Mon, 29 Jul 2019 06:59:38 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jul 2019 12:14:44 GMT",
"version": "v2"
}
] | 2019-12-04 | [
[
"Nagar",
"Alessandro",
""
],
[
"Messina",
"Francesco",
""
],
[
"Kavanagh",
"Chris",
""
],
[
"Lukes-Gerakopoulos",
"Georgios",
""
],
[
"Warburton",
"Niels",
""
],
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Harms",
"En... | We present new calculations of the energy flux of a spinning test-body on circular orbits around a Schwarzschild black hole at linear order in the particle spin. We compute the multipolar fluxes up to $\ell=m=6$ using two independent numerical solvers of theTeukolsky equation, one in the time domain and the other in th... |
1704.06555 | Salah Eddine Ennadifi | Salah-Eddine Ennadifi | A Quantum Approach to Gravitational Waves | 9 pages, 3 figures, 2 tables | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In light of the Gravitational Waves observation and the discrete structure of
spacetime at high scales M_QG, we investigate the behavior of Gravitational
Waves and the spacetime deformation patterns in terms of gravitons and derive
the effective results with respect to photons. Using the GW150914 data and
related sig... | [
{
"created": "Mon, 17 Apr 2017 22:37:03 GMT",
"version": "v1"
}
] | 2017-04-24 | [
[
"Ennadifi",
"Salah-Eddine",
""
]
] | In light of the Gravitational Waves observation and the discrete structure of spacetime at high scales M_QG, we investigate the behavior of Gravitational Waves and the spacetime deformation patterns in terms of gravitons and derive the effective results with respect to photons. Using the GW150914 data and related signa... |
2103.01651 | Burkhard Kleihaus | Simon Barton, Betti Hartmann, Burkhard Kleihaus, and Jutta Kunz | Spontaneously vectorized Einstein-Gauss-Bonnet black holes | 12 pages, 8 figures | null | 10.1016/j.physletb.2021.136336 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct spontaneously vectorized black holes where a real vector field
is coupled to the Gauss-Bonnet invariant. We employ three coupling functions
for the vector field, and determine the respective domains of existence of the
vectorized black holes. These domains of existence are bounded by the
marginally stabl... | [
{
"created": "Tue, 2 Mar 2021 11:24:14 GMT",
"version": "v1"
}
] | 2021-05-05 | [
[
"Barton",
"Simon",
""
],
[
"Hartmann",
"Betti",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | We construct spontaneously vectorized black holes where a real vector field is coupled to the Gauss-Bonnet invariant. We employ three coupling functions for the vector field, and determine the respective domains of existence of the vectorized black holes. These domains of existence are bounded by the marginally stable ... |
1008.1196 | Jeff Murugan | George F. R. Ellis, Henk van Elst, Jeff Murugan and Jean-Philippe Uzan | On the Trace-Free Einstein Equations as a Viable Alternative to General
Relativity | Substantial changes from v1 including added author, change of title
and emphasis of the paper although all original results of v1. remain | Class.Quant.Grav. 28 (2011) 225007 (11pp) | 10.1088/0264-9381/28/22/225007 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quantum field theoretic prediction for the vacuum energy density leads to
a value for the effective cosmological constant that is incorrect by between 60
to 120 orders of magnitude. We review an old proposal of replacing Einstein's
Field Equations by their trace-free part (the Trace-Free Einstein Equations),
toge... | [
{
"created": "Fri, 6 Aug 2010 13:38:11 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Apr 2011 09:28:16 GMT",
"version": "v2"
}
] | 2011-10-24 | [
[
"Ellis",
"George F. R.",
""
],
[
"van Elst",
"Henk",
""
],
[
"Murugan",
"Jeff",
""
],
[
"Uzan",
"Jean-Philippe",
""
]
] | The quantum field theoretic prediction for the vacuum energy density leads to a value for the effective cosmological constant that is incorrect by between 60 to 120 orders of magnitude. We review an old proposal of replacing Einstein's Field Equations by their trace-free part (the Trace-Free Einstein Equations), togeth... |
2007.06111 | Israel Quiros | Israel Quiros, Roberto De Arcia, Ricardo Garc\'ia-Salcedo, Tame
Gonzalez, Francisco X. Linares Cede\~no, Ulises Nucamendi | On the quantum origin of inflation in the geometric inflation model | 12 pages, 2 figures (14 eps files). Comments acknowledged | Phys. Rev. D 103, 064043 (2021) | 10.1103/PhysRevD.103.064043 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we investigate the cosmological dynamics of geometric inflation
by means of the tools of the dynamical systems theory. We focus in the study of
two explicit models where it is possible to sum the infinite series of higher
curvature corrections that arises in the formalism. These would be very
interestin... | [
{
"created": "Sun, 12 Jul 2020 22:12:54 GMT",
"version": "v1"
}
] | 2021-03-31 | [
[
"Quiros",
"Israel",
""
],
[
"De Arcia",
"Roberto",
""
],
[
"García-Salcedo",
"Ricardo",
""
],
[
"Gonzalez",
"Tame",
""
],
[
"Cedeño",
"Francisco X. Linares",
""
],
[
"Nucamendi",
"Ulises",
""
]
] | In this paper we investigate the cosmological dynamics of geometric inflation by means of the tools of the dynamical systems theory. We focus in the study of two explicit models where it is possible to sum the infinite series of higher curvature corrections that arises in the formalism. These would be very interesting ... |
0908.2755 | Mohammed Lagraa | Meriem-Hadjer Lagraa and Mohammed Lagraa (University of Oran) | On the Generalized Einstein-Cartan Action with Fermions | 8 pages, Added references, Corrected typos, Accepted in Class. Quant.
Grav | Class.Quant.Grav.27:095012,2010 | 10.1088/0264-9381/27/9/095012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | From the freedom exhibited by the generalized Einstein action proposed in
[1], we show that we can construct the standard effective Einstein-Cartan
action coupled to the fermionic matter without the usual current-current
interaction and therefore an effective action which does not depend neither on
the Immirzi parame... | [
{
"created": "Wed, 19 Aug 2009 16:28:03 GMT",
"version": "v1"
},
{
"created": "Sun, 30 Aug 2009 19:22:47 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Mar 2010 11:25:13 GMT",
"version": "v3"
}
] | 2010-04-21 | [
[
"Lagraa",
"Meriem-Hadjer",
"",
"University of Oran"
],
[
"Lagraa",
"Mohammed",
"",
"University of Oran"
]
] | From the freedom exhibited by the generalized Einstein action proposed in [1], we show that we can construct the standard effective Einstein-Cartan action coupled to the fermionic matter without the usual current-current interaction and therefore an effective action which does not depend neither on the Immirzi paramete... |
1204.4924 | Alberto Saa | Jo\~ao Paulo M. Pitelli, Alberto Saa | Quantum Singularities in Horava-Lifshitz Cosmology | 13 pages, revtex, 1 figure. Final version to appear in PRD | Phys. Rev. D 86, 063506 (2012) | 10.1103/PhysRevD.86.063506 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recently proposed Horava-Lifshitz (HL) theory of gravity is analyzed from
the quantum cosmology point of view. By employing usual quantum cosmology
techniques, we study the quantum Friedmann-Lemaitre-Robertson-Walker (FLRW)
universe filled with radiation in the context of HL gravity. We find that this
universe is... | [
{
"created": "Sun, 22 Apr 2012 19:06:09 GMT",
"version": "v1"
},
{
"created": "Sun, 19 Aug 2012 18:53:43 GMT",
"version": "v2"
}
] | 2012-09-10 | [
[
"Pitelli",
"João Paulo M.",
""
],
[
"Saa",
"Alberto",
""
]
] | The recently proposed Horava-Lifshitz (HL) theory of gravity is analyzed from the quantum cosmology point of view. By employing usual quantum cosmology techniques, we study the quantum Friedmann-Lemaitre-Robertson-Walker (FLRW) universe filled with radiation in the context of HL gravity. We find that this universe is q... |
1312.0268 | Mari\'an Pilc | Mari\'an Pilc | Kinematical Hilbert Space for Einstein-Cartan Theory | 21 pages | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Kinematical Hilbert space for Einstein-Cartan theory is constructed via von
Neumann ideas of infinity-dimensional tensor product of Hilbert spaces. Field
of comframe is considered as basic variable what is in contrast with standard
euclidean LQG which is build by Wilson loops of Ashtekar-Barbero-Immirzi
connection.
| [
{
"created": "Sun, 1 Dec 2013 19:40:06 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Dec 2013 10:24:17 GMT",
"version": "v2"
}
] | 2013-12-10 | [
[
"Pilc",
"Marián",
""
]
] | Kinematical Hilbert space for Einstein-Cartan theory is constructed via von Neumann ideas of infinity-dimensional tensor product of Hilbert spaces. Field of comframe is considered as basic variable what is in contrast with standard euclidean LQG which is build by Wilson loops of Ashtekar-Barbero-Immirzi connection. |
gr-qc/0609002 | Lior M. Burko | Lior M. Burko and Gaurav Khanna | Accurate time-domain gravitational waveforms for extreme-mass-ratio
binaries | 6 pages, 9 figures, 2 tables; Changes: some errors corrected.
Comparison with Frequency-domain now done in stronger field | Europhys.Lett.78:60005,2007 | 10.1209/0295-5075/78/60005 | null | gr-qc | null | The accuracy of time-domain solutions of the inhomogeneous Teukolsky equation
is improved significantly. Comparing energy fluxes in gravitational waves with
highly accurate frequency-domain results for circular equatorial orbits in
Schwarzschild and Kerr, we find agreement to within 1% or better, which we
believe can... | [
{
"created": "Thu, 31 Aug 2006 21:30:42 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Feb 2007 14:52:13 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Burko",
"Lior M.",
""
],
[
"Khanna",
"Gaurav",
""
]
] | The accuracy of time-domain solutions of the inhomogeneous Teukolsky equation is improved significantly. Comparing energy fluxes in gravitational waves with highly accurate frequency-domain results for circular equatorial orbits in Schwarzschild and Kerr, we find agreement to within 1% or better, which we believe can b... |
1112.4194 | Mikhail M. Ivanov | Mikhail M. Ivanov and Alexey V. Toporensky | Stable super-inflating cosmological solutions in f(R)-gravity | 16 pages with 22 figures. Journal version. Improvement in
presentation, references added | Int.J.Mod.Phys. D, Vol. 21, No. 6 (2012) 1250051 (20 pages) | 10.1142/S0218271812500514 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider super-inflating solutions in modified gravity for several popular
families of $f(R)$ functions. Using scalar field reformulation of
$f(R)$-gravity we describe how the form of effective scalar field potential can
be used for explaining existence of stable super-inflation solutions in the
theory under consi... | [
{
"created": "Sun, 18 Dec 2011 21:55:22 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Feb 2012 12:59:34 GMT",
"version": "v2"
},
{
"created": "Wed, 23 May 2012 19:59:08 GMT",
"version": "v3"
}
] | 2012-05-24 | [
[
"Ivanov",
"Mikhail M.",
""
],
[
"Toporensky",
"Alexey V.",
""
]
] | We consider super-inflating solutions in modified gravity for several popular families of $f(R)$ functions. Using scalar field reformulation of $f(R)$-gravity we describe how the form of effective scalar field potential can be used for explaining existence of stable super-inflation solutions in the theory under conside... |
2311.07515 | Mohammad Atazadeh | S. Golsanamlou, K. Atazadeh and M. Mousavi | Geodesic deviation equation in generalized hybrid Metric-Palatini
gravity | 18 pages, 4 figures, references added | Eur. Phys. J. C 83(2023)1024 | 10.1140/epjc/s10052-023-12136-z | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the context of general relativity, the geodesic deviation equation (GDE)
relates the Riemann curvature tensor to the relative acceleration of two
neighboring geodesics. In this paper, we consider the GDE for the generalized
hybrid Metric-Palatini gravity and apply it in this model to investigate the
structure of t... | [
{
"created": "Fri, 10 Nov 2023 15:51:26 GMT",
"version": "v1"
},
{
"created": "Sun, 19 Nov 2023 18:28:19 GMT",
"version": "v2"
}
] | 2023-11-21 | [
[
"Golsanamlou",
"S.",
""
],
[
"Atazadeh",
"K.",
""
],
[
"Mousavi",
"M.",
""
]
] | In the context of general relativity, the geodesic deviation equation (GDE) relates the Riemann curvature tensor to the relative acceleration of two neighboring geodesics. In this paper, we consider the GDE for the generalized hybrid Metric-Palatini gravity and apply it in this model to investigate the structure of tim... |
gr-qc/9807015 | Eanna E. Flanagan | Wolfgang Tichy and Eanna E. Flanagan (Cornell University) | How unique is the expected stress-energy tensor of a massive scalar
field? | 17 pages, no figures, latex 2e, submitted to Phys Rev D. Minor
modifications and references added | Phys.Rev. D58 (1998) 124007 | 10.1103/PhysRevD.58.124007 | null | gr-qc hep-th | null | We show that the set of ambiguities in the renormalized expected
stress-energy tensor allowed by the Wald axioms is much larger for a massive
scalar field (an infinite number of free parameters) than for a massless scalar
field (two free parameters). We also use the closed-time-path effective action
formalism of Schw... | [
{
"created": "Tue, 7 Jul 1998 06:56:35 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Aug 1998 18:29:08 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Tichy",
"Wolfgang",
"",
"Cornell University"
],
[
"Flanagan",
"Eanna E.",
"",
"Cornell University"
]
] | We show that the set of ambiguities in the renormalized expected stress-energy tensor allowed by the Wald axioms is much larger for a massive scalar field (an infinite number of free parameters) than for a massless scalar field (two free parameters). We also use the closed-time-path effective action formalism of Schwin... |
2112.04793 | Yerko V\'asquez | Angel Rincon, P. A. Gonzalez, Grigoris Panotopoulos, Joel Saavedra,
Yerko Vasquez | Quasinormal modes for a non-minimally coupled scalar field in a
five-dimensional Einstein-power-Maxwell background | Accepted for publication in EPJ Plus | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the propagation of massless scalar fields non-minimally coupled to
gravity in the background of five-dimensional Einstein-power-Maxwell black
holes, and using the WKB and the pseudospectral Chebyshev methods we obtain the
quasinormal frequencies (QNFs), which allow us to show the existence of stable
and unst... | [
{
"created": "Thu, 9 Dec 2021 09:28:13 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Oct 2022 19:40:57 GMT",
"version": "v2"
}
] | 2022-11-02 | [
[
"Rincon",
"Angel",
""
],
[
"Gonzalez",
"P. A.",
""
],
[
"Panotopoulos",
"Grigoris",
""
],
[
"Saavedra",
"Joel",
""
],
[
"Vasquez",
"Yerko",
""
]
] | We study the propagation of massless scalar fields non-minimally coupled to gravity in the background of five-dimensional Einstein-power-Maxwell black holes, and using the WKB and the pseudospectral Chebyshev methods we obtain the quasinormal frequencies (QNFs), which allow us to show the existence of stable and unstab... |
2112.12543 | Bernard Raffaelli | Bernard Raffaelli | Hidden conformal symmetry on the black hole photon sphere | 10 pages, submitted paper | J. High Energ. Phys. 2022, 125 (2022) | 10.1007/JHEP03(2022)125 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a class of static and spherically symmetric black hole geometries
endowed with a photon sphere. On the one hand, we show that close to the photon
sphere, a massless scalar field theory exhibits a simple dynamical
$SL(2,\mathbb{R})$ algebraic structure which allows to recover the discrete
spectrum of the w... | [
{
"created": "Thu, 23 Dec 2021 13:57:03 GMT",
"version": "v1"
}
] | 2022-03-24 | [
[
"Raffaelli",
"Bernard",
""
]
] | We consider a class of static and spherically symmetric black hole geometries endowed with a photon sphere. On the one hand, we show that close to the photon sphere, a massless scalar field theory exhibits a simple dynamical $SL(2,\mathbb{R})$ algebraic structure which allows to recover the discrete spectrum of the wea... |
2202.01230 | Shahar Hod | Shahar Hod | Quasinormal resonances of rapidly-spinning Kerr black holes and the
universal relaxation bound | 6 pages | Physics Letters B 823, 136733 (2021) | null | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | The universal relaxation bound suggests that the relaxation times of
perturbed thermodynamical systems is bounded from below by the simple
time-times-temperature (TTT) quantum relation $\tau\times T\geq
{{\hbar}\over{\pi}}$. It is known that some perturbation modes of near-extremal
Kerr black holes in the regime $MT_... | [
{
"created": "Wed, 2 Feb 2022 19:00:02 GMT",
"version": "v1"
}
] | 2022-02-04 | [
[
"Hod",
"Shahar",
""
]
] | The universal relaxation bound suggests that the relaxation times of perturbed thermodynamical systems is bounded from below by the simple time-times-temperature (TTT) quantum relation $\tau\times T\geq {{\hbar}\over{\pi}}$. It is known that some perturbation modes of near-extremal Kerr black holes in the regime $MT_{\... |
1301.1820 | Jaime Julve | J. Julve, A. Tiemblo | A perturbation approach to Translational Gravity | 13 pages. Abstract mistaken in previous version. Submitted to IJGMMP.
arXiv admin note: substantial text overlap with arXiv:1007.0342 | null | 10.1142/S021988781350062X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Within a gauge formulation of 3+1 gravity relying on a nonlinear realization
of the group of isometries of space-time, a natural expansion of the metric
tensor arises and a simple choice of the gravity dynamical variables is
possible. We show that the expansion parameter can be identified with the
gravitational const... | [
{
"created": "Wed, 9 Jan 2013 11:50:41 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jan 2013 10:38:30 GMT",
"version": "v2"
}
] | 2016-11-09 | [
[
"Julve",
"J.",
""
],
[
"Tiemblo",
"A.",
""
]
] | Within a gauge formulation of 3+1 gravity relying on a nonlinear realization of the group of isometries of space-time, a natural expansion of the metric tensor arises and a simple choice of the gravity dynamical variables is possible. We show that the expansion parameter can be identified with the gravitational constan... |
0901.4098 | Eyo Ita III | Eyo Eyo Ita III | Reformulation of the Hamiltonian constraint of four dimensional gravity
for arbitrary values of the Immirzi parameter via the affine group formalism | 13 pages. Accepted by CQG journal | CQG.31 (2014) 015014 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One of the virtues of the Ashtekar variables is the simplification of the
initial value constraints for gravity. In the case of self-dual variables this
entails a complexification of the phase space which comes at the expense of
having to implement reality conditions in the Lorentzian signature case. A
reformulation ... | [
{
"created": "Mon, 26 Jan 2009 20:57:18 GMT",
"version": "v1"
},
{
"created": "Sat, 4 Sep 2010 17:55:14 GMT",
"version": "v2"
},
{
"created": "Mon, 8 Apr 2013 06:44:01 GMT",
"version": "v3"
},
{
"created": "Thu, 15 Aug 2013 08:44:12 GMT",
"version": "v4"
},
{
"cre... | 2013-11-25 | [
[
"Ita",
"Eyo Eyo",
"III"
]
] | One of the virtues of the Ashtekar variables is the simplification of the initial value constraints for gravity. In the case of self-dual variables this entails a complexification of the phase space which comes at the expense of having to implement reality conditions in the Lorentzian signature case. A reformulation of... |
gr-qc/0303076 | S. Q. Wu | S. Q. Wu and M. L. Yan | Entropy of a Kerr-de Sitter black hole due to arbitrary spin fields | 28 pages, two figures, Revtex4.0. Final revised version to appear in
PRD | Phys.Rev.D69:044019,2004; Erratum-ibid.D73:089902,2006 | 10.1103/PhysRevD.69.044019 10.1103/PhysRevD.73.089902 | USTC-ICTS 03-3 | gr-qc | null | The Newman-Penrose formalism is used to derive the Teukolsky master equations
controlling massless scalar, neutrino, electromagnetic, gravitino, and
gravitational field perturbations of the Kerr-de Sitter spacetime. Then the
quantum entropy of a non-extreme Kerr-de Sitter black hole due to arbitrary
spin fields is ca... | [
{
"created": "Thu, 20 Mar 2003 02:45:34 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Mar 2003 09:18:54 GMT",
"version": "v2"
},
{
"created": "Tue, 8 Apr 2003 01:22:54 GMT",
"version": "v3"
},
{
"created": "Wed, 11 Jun 2003 03:16:24 GMT",
"version": "v4"
},
{
"cr... | 2014-11-17 | [
[
"Wu",
"S. Q.",
""
],
[
"Yan",
"M. L.",
""
]
] | The Newman-Penrose formalism is used to derive the Teukolsky master equations controlling massless scalar, neutrino, electromagnetic, gravitino, and gravitational field perturbations of the Kerr-de Sitter spacetime. Then the quantum entropy of a non-extreme Kerr-de Sitter black hole due to arbitrary spin fields is calc... |
2309.08662 | Jordan Scharnhorst | Jordan Scharnhorst, Anthony Aguirre | Modeling the Past Hypothesis: A Mechanical Cosmology | 13 pages, 11 figures | null | 10.1007/s10701-023-00745-3 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by-nc-sa/4.0/ | There is a paradox in the standard model of cosmology. How can matter in the
early universe have been in thermal equilibrium, indicating maximum entropy,
but the initial state also have been low entropy (the "past hypothesis"), so as
to underpin the second law of thermodynamics? The problem has been highly
contested,... | [
{
"created": "Fri, 15 Sep 2023 18:00:02 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Oct 2023 23:54:01 GMT",
"version": "v2"
}
] | 2023-12-21 | [
[
"Scharnhorst",
"Jordan",
""
],
[
"Aguirre",
"Anthony",
""
]
] | There is a paradox in the standard model of cosmology. How can matter in the early universe have been in thermal equilibrium, indicating maximum entropy, but the initial state also have been low entropy (the "past hypothesis"), so as to underpin the second law of thermodynamics? The problem has been highly contested, w... |
gr-qc/9910039 | Antony Lewis | Antony Lewis, Chris Doran and Anthony Lasenby | Quadratic Lagrangians and Topology in Gauge Theory Gravity | null | Gen.Rel.Grav. 32 (2000) 161-173 | 10.1023/A:1001856702156 | null | gr-qc | null | We consider topological contributions to the action integral in a gauge
theory formulation of gravity. Two topological invariants are found and are
shown to arise from the scalar and pseudoscalar parts of a single integral.
Neither of these action integrals contribute to the classical field equations.
An identity is ... | [
{
"created": "Tue, 12 Oct 1999 10:22:01 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Lewis",
"Antony",
""
],
[
"Doran",
"Chris",
""
],
[
"Lasenby",
"Anthony",
""
]
] | We consider topological contributions to the action integral in a gauge theory formulation of gravity. Two topological invariants are found and are shown to arise from the scalar and pseudoscalar parts of a single integral. Neither of these action integrals contribute to the classical field equations. An identity is fo... |
0809.2814 | Yasushi Mino | Yasushi Mino, Jeandrew Brink | Gravitational Radiation from Plunging Orbits - Perturbative Study - | null | Phys.Rev.D78:124015,2008 | 10.1103/PhysRevD.78.124015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Numerical relativity has recently yielded a plethora of results about kicks
from spinning mergers which has, in turn, vastly increased our knowledge about
the spin interactions of black hole systems. In this work we use black hole
perturbation theory to calculate accurately the gravitational waves emanating
from the ... | [
{
"created": "Tue, 16 Sep 2008 21:22:02 GMT",
"version": "v1"
}
] | 2010-04-21 | [
[
"Mino",
"Yasushi",
""
],
[
"Brink",
"Jeandrew",
""
]
] | Numerical relativity has recently yielded a plethora of results about kicks from spinning mergers which has, in turn, vastly increased our knowledge about the spin interactions of black hole systems. In this work we use black hole perturbation theory to calculate accurately the gravitational waves emanating from the en... |
gr-qc/9802017 | Jorge Pullin | Jorge Pullin | Matters of Gravity, the newsletter of the APS TG on gravitation | 30 pages LaTeX, uses html.sty, available (now also in html!) at
http://vishnu.nirvana.phys.psu.edu/mog.html | null | null | MOG-11 | gr-qc | null | Contents:
*News:
Topical group news, by Jim Isenberg
April 1997 Joint APS/AAPT Meeting, GTG program, by Abhay Ashtekar
Formation of the Gravitational-Wave International Committee, by Sam Finn
The 1997 Xanthopoulos award, by Abhay Asthekar
We hear that..., by Jorge Pullin
*Research Briefs:
LIGO project... | [
{
"created": "Mon, 9 Feb 1998 16:13:48 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Pullin",
"Jorge",
""
]
] | Contents: *News: Topical group news, by Jim Isenberg April 1997 Joint APS/AAPT Meeting, GTG program, by Abhay Ashtekar Formation of the Gravitational-Wave International Committee, by Sam Finn The 1997 Xanthopoulos award, by Abhay Asthekar We hear that..., by Jorge Pullin *Research Briefs: LIGO project update, by David ... |
1104.5205 | Samuel E. Gralla | Samuel E. Gralla and Robert M. Wald | A Note on the Coordinate Freedom in Describing the Motion of Particles
in General Relativity | null | Class.Quant.Grav.28:177001,2011 | 10.1088/0264-9381/28/17/177001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Our previous work developed a framework for treating the motion of a small
body in general relativity, based on a one-parameter-family of solutions to
Einstein's equation. Here we give an analysis of the coordinate freedom allowed
within this framework, as is needed to determine the form of the equations of
motion wh... | [
{
"created": "Wed, 27 Apr 2011 18:11:24 GMT",
"version": "v1"
}
] | 2011-07-28 | [
[
"Gralla",
"Samuel E.",
""
],
[
"Wald",
"Robert M.",
""
]
] | Our previous work developed a framework for treating the motion of a small body in general relativity, based on a one-parameter-family of solutions to Einstein's equation. Here we give an analysis of the coordinate freedom allowed within this framework, as is needed to determine the form of the equations of motion when... |
2303.11450 | Alice Di Tucci | Alice Di Tucci | Path integrals, saddle points and the beginning of the universe | 237 pages Thesis: PhD Humboldt U., Berlin, Humboldt U., Berlin
(defense: August 10, 2021) | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The very early universe is understood in terms of quantum field theories on
curved spacetime, where the classical background spacetime is typically an FLRW
cosmology and the quantum fields which propagate on it include gravitational
waves and energy density fluctuations. Many open questions seem to relate to
the fact... | [
{
"created": "Mon, 20 Mar 2023 20:50:01 GMT",
"version": "v1"
}
] | 2023-03-22 | [
[
"Di Tucci",
"Alice",
""
]
] | The very early universe is understood in terms of quantum field theories on curved spacetime, where the classical background spacetime is typically an FLRW cosmology and the quantum fields which propagate on it include gravitational waves and energy density fluctuations. Many open questions seem to relate to the fact t... |
gr-qc/9603038 | Kevin Chan | Kevin C.K. Chan (University of Waterloo) | Modifications of the BTZ black hole by a dilaton/scalar | 18 pages, Latex, in press in Phys. Rev. D | Phys.Rev.D55:3564-3574,1997 | 10.1103/PhysRevD.55.3564 | WATPHYS-TH-96/03 | gr-qc | null | We investigate some modifications of the static BTZ black hole solution due
to a chosen asymptotically constant dilaton/scalar. New classes of static black
hole solutions are obtained. One of the solutions contains the Martinez-Zanelli
conformal black hole solution as a special case. Using quasilocal formalism, we
ca... | [
{
"created": "Fri, 22 Mar 1996 20:26:04 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Jan 1997 04:43:18 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Chan",
"Kevin C. K.",
"",
"University of Waterloo"
]
] | We investigate some modifications of the static BTZ black hole solution due to a chosen asymptotically constant dilaton/scalar. New classes of static black hole solutions are obtained. One of the solutions contains the Martinez-Zanelli conformal black hole solution as a special case. Using quasilocal formalism, we calc... |
2212.02221 | Wenshuai Liu | Wenshuai Liu | Gravitational Lens System as a Long Baseline Detector of Extremely Low
Frequency Primordial Gravitational Wave | 9 pages, 3 figures | null | null | null | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effect of extremely low frequency primordial gravitational wave with
arbitrary direction of propagation on a non-aligned gravitational lens system
is investigated. From the point of view of real astrophysical lens model,
singular isothermal sphere lens model is adopted in the gravitational lens
system. The result... | [
{
"created": "Mon, 5 Dec 2022 12:55:23 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Feb 2023 13:13:48 GMT",
"version": "v2"
},
{
"created": "Thu, 18 May 2023 13:54:20 GMT",
"version": "v3"
},
{
"created": "Thu, 3 Aug 2023 13:54:19 GMT",
"version": "v4"
},
{
"cre... | 2023-10-17 | [
[
"Liu",
"Wenshuai",
""
]
] | The effect of extremely low frequency primordial gravitational wave with arbitrary direction of propagation on a non-aligned gravitational lens system is investigated. From the point of view of real astrophysical lens model, singular isothermal sphere lens model is adopted in the gravitational lens system. The results ... |
2308.01728 | Erik Jensko | Christian G. Boehmer, Erik Jensko | A new 2D formulation of modified General Relativity | 8 pages. Final version accepted for publication | Fortschr. Phys. 2024, 72, 2300216 | 10.1002/prop.202300216 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that the Einstein-Hilbert action in two dimensions is
topological and yields an identically vanishing Einstein tensor. Consequently
one is faced with difficulties when formulating a non-trivial gravity model. We
present a new, intrinsically two-dimensional, approach to this problem based on
the Einst... | [
{
"created": "Thu, 3 Aug 2023 12:38:23 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Mar 2024 10:13:34 GMT",
"version": "v2"
}
] | 2024-06-10 | [
[
"Boehmer",
"Christian G.",
""
],
[
"Jensko",
"Erik",
""
]
] | It is well known that the Einstein-Hilbert action in two dimensions is topological and yields an identically vanishing Einstein tensor. Consequently one is faced with difficulties when formulating a non-trivial gravity model. We present a new, intrinsically two-dimensional, approach to this problem based on the Einstei... |
gr-qc/0601132 | Giuseppe De Risi | G. De Risi | Massless and massive graviton spectra in anisotropic dilatonic
braneworld cosmologies | 18 pages, 4 figures, Typos corrections | Phys.Rev. D73 (2006) 124015 | 10.1103/PhysRevD.73.124015 | BA-TH/06-530, CERN-PH-TH/2006-096 | gr-qc hep-th | null | We consider a braneworld model in which an anisotropic brane is embedded in a
dilatonic background. We solve the background solutions and study the behavior
of the perturbations when the universe evolves from an inflationary Kasner
phase to a Minkowski phase. We calculate the massless mode spectrum, and find
that it ... | [
{
"created": "Mon, 30 Jan 2006 11:50:39 GMT",
"version": "v1"
},
{
"created": "Wed, 10 May 2006 16:53:29 GMT",
"version": "v2"
},
{
"created": "Mon, 29 May 2006 09:06:43 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"De Risi",
"G.",
""
]
] | We consider a braneworld model in which an anisotropic brane is embedded in a dilatonic background. We solve the background solutions and study the behavior of the perturbations when the universe evolves from an inflationary Kasner phase to a Minkowski phase. We calculate the massless mode spectrum, and find that it do... |
2009.02129 | Hussain Gohar | Ana Alonso-Serrano, Mariusz P. Dabrowski, Hussain Gohar | Nonextensive Black Hole Entropy and Quantum Gravity Effects at the Last
Stages of Evaporation | 9 pages, 5 figures, extended introduction, results and conclusion,
added new references, accepted in Phys. Rev. D | Phys. Rev. D 103, 026021 (2021) | 10.1103/PhysRevD.103.026021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the Generalized Uncertainty Principle (GUP) impact onto the
nonextensive black hole thermodynamics by using R\'enyi entropy. We show that
when introducing GUP effects, both R\'enyi entropy and temperature associated
to black holes have finite values at the end of the evaporation process. We
also study the ... | [
{
"created": "Fri, 4 Sep 2020 12:07:18 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Jan 2021 10:09:30 GMT",
"version": "v2"
}
] | 2021-02-03 | [
[
"Alonso-Serrano",
"Ana",
""
],
[
"Dabrowski",
"Mariusz P.",
""
],
[
"Gohar",
"Hussain",
""
]
] | We analyze the Generalized Uncertainty Principle (GUP) impact onto the nonextensive black hole thermodynamics by using R\'enyi entropy. We show that when introducing GUP effects, both R\'enyi entropy and temperature associated to black holes have finite values at the end of the evaporation process. We also study the sp... |
2202.08213 | Jitendra Kumar Dr. | H. D. Singh, J. Kumar | A study of anisotropic compact star with MIT bag EoS in f(R,T) modified
theory | null | null | null | null | gr-qc astro-ph.GA | http://creativecommons.org/publicdomain/zero/1.0/ | In the current study, we investigated a specific model of anisotropic strange
stars specially Her X-1, in the background of modified f(R,T) gravity by
choosing f(R,T) = R+2{\xi}T, where R is Ricci scalar, T is the trace of the
energy-momentum tensor and {\xi} is a coupling constant. To obtained the
solution for the m... | [
{
"created": "Tue, 15 Feb 2022 11:03:29 GMT",
"version": "v1"
}
] | 2022-02-17 | [
[
"Singh",
"H. D.",
""
],
[
"Kumar",
"J.",
""
]
] | In the current study, we investigated a specific model of anisotropic strange stars specially Her X-1, in the background of modified f(R,T) gravity by choosing f(R,T) = R+2{\xi}T, where R is Ricci scalar, T is the trace of the energy-momentum tensor and {\xi} is a coupling constant. To obtained the solution for the mod... |
2110.13542 | Charlie Hoy | Charlie Hoy, Stephen Fairhurst, Mark Hannam, Vaibhav Tiwari | Understanding how fast black holes spin by analysing data from the
second gravitational-wave catalogue | 12 pages, 6 figures. Update to match published version | null | 10.3847/1538-4357/ac54a3 | LIGO-P2100374 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Advanced LIGO and Virgo detectors have now observed approximately 50
black-hole-binary mergers, from which we can begin to infer how rapidly
astrophysical black holes spin. The LIGO-Virgo Collaboration (LVC) analysis of
detections up to the end of the first half of the third observing run (O3a)
appeared to uncove... | [
{
"created": "Tue, 26 Oct 2021 10:10:48 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Apr 2022 09:51:11 GMT",
"version": "v2"
}
] | 2022-04-26 | [
[
"Hoy",
"Charlie",
""
],
[
"Fairhurst",
"Stephen",
""
],
[
"Hannam",
"Mark",
""
],
[
"Tiwari",
"Vaibhav",
""
]
] | The Advanced LIGO and Virgo detectors have now observed approximately 50 black-hole-binary mergers, from which we can begin to infer how rapidly astrophysical black holes spin. The LIGO-Virgo Collaboration (LVC) analysis of detections up to the end of the first half of the third observing run (O3a) appeared to uncover ... |
gr-qc/0509089 | Ioannis Raptis | Ioannis Raptis | `Iconoclastic', Categorical Quantum Gravity | 34 pages, in paper form 2 talks given at ``Glafka--2004: Iconoclastic
Approaches to Quantum Gravity'' international theoretical physics conference,
Athens, Greece (summer 2004) | null | 10.1007/s10773-006-9137-9 | null | gr-qc | null | This is a two-part, `2-in-1' paper. In Part I, the introductory talk at
`Glafka--2004: Iconoclastic Approaches to Quantum Gravity' international
theoretical physics conference is presented in paper form (without references).
In Part II, the more technical talk, originally titled ``Abstract Differential
Geometric Excu... | [
{
"created": "Thu, 22 Sep 2005 11:30:31 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Raptis",
"Ioannis",
""
]
] | This is a two-part, `2-in-1' paper. In Part I, the introductory talk at `Glafka--2004: Iconoclastic Approaches to Quantum Gravity' international theoretical physics conference is presented in paper form (without references). In Part II, the more technical talk, originally titled ``Abstract Differential Geometric Excurs... |
2108.12342 | Alexander Petrov Nikolaevich | E. D. Emtsova and A. N. Petrov | A moving black hole in TEGR as a moving matter ball | 10 pages | Space, Time and Fundamental Interactions, No. 39(2), 18-25 (2022) | 10.17238/issn2226-8812.2022.2.18-25 | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | Possibilities of the covariant with respect to both coordinate and local
Lorentz transformations formalism developed earlier in the framework of
Teleparallel Equivalent of General Relativity (TEGR) are studied. The formalism
is applied to a solution for a moving with constant velocity (with respect to
distant static ... | [
{
"created": "Fri, 27 Aug 2021 15:18:22 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Apr 2022 16:18:10 GMT",
"version": "v2"
},
{
"created": "Thu, 4 May 2023 15:46:58 GMT",
"version": "v3"
}
] | 2023-05-08 | [
[
"Emtsova",
"E. D.",
""
],
[
"Petrov",
"A. N.",
""
]
] | Possibilities of the covariant with respect to both coordinate and local Lorentz transformations formalism developed earlier in the framework of Teleparallel Equivalent of General Relativity (TEGR) are studied. The formalism is applied to a solution for a moving with constant velocity (with respect to distant static ob... |
1105.6345 | Abel Camacho Mr. | Juan Israel Rivas, Abel Camacho, Ertan Goeklue | Quantum spacetime fluctuations: Lamb Shift and hyperfine structure of
the hydrogen atom | 26 pages | null | 10.1103/PhysRevD.84.055024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the consequences of the presence of metric fluctuations upon the
properties of a hydrogen atom. Particularly, we introduce these metric
fluctuations in the corresponding effective Schroedinger equation and deduce
the modifications that they entail upon the hyperfine structure related to a
hydrogen atom. W... | [
{
"created": "Tue, 31 May 2011 17:24:02 GMT",
"version": "v1"
}
] | 2015-05-28 | [
[
"Rivas",
"Juan Israel",
""
],
[
"Camacho",
"Abel",
""
],
[
"Goeklue",
"Ertan",
""
]
] | We consider the consequences of the presence of metric fluctuations upon the properties of a hydrogen atom. Particularly, we introduce these metric fluctuations in the corresponding effective Schroedinger equation and deduce the modifications that they entail upon the hyperfine structure related to a hydrogen atom. We ... |
2203.05263 | Vitalii Vertogradov | Andrei Grib, Vitalii Vertogradov, Ivan Fedorov | The Forces outside the static limit in the rotating frame | null | Physics of Complex Systems, 2022, vol. 3, no. 3 | 10.33910/2687-153X-2022-3-3-117-121 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper we consider the rotating frame of the Minkowski spacetime in
order to describe the inertial forces outside the static limit. We consider the
inertial forces inside the static limit to find the classical analogue
afterwards we find out the expressions for these forces outside the static
limit where we ca... | [
{
"created": "Thu, 10 Mar 2022 09:49:05 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Dec 2022 14:14:14 GMT",
"version": "v2"
}
] | 2022-12-08 | [
[
"Grib",
"Andrei",
""
],
[
"Vertogradov",
"Vitalii",
""
],
[
"Fedorov",
"Ivan",
""
]
] | In this paper we consider the rotating frame of the Minkowski spacetime in order to describe the inertial forces outside the static limit. We consider the inertial forces inside the static limit to find the classical analogue afterwards we find out the expressions for these forces outside the static limit where we can'... |
2304.09014 | Shin'ichi Nojiri | Shin'ichi Nojiri and Sergei D. Odintsov | Micro-canonical and canonical description for generalised entropy | LaTeX, 9 pages, no figure, to appear in Physics Letters B | null | null | null | gr-qc cond-mat.stat-mech hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Few parameters dependent generalised entropy includes Tsallis entropy,
R{\'e}nyi entropy, Sharma-Mittal entropy, Barrow entropy, Kaniadakis entropy,
etc as particular representatives. Its relation to physical systems is not
always clear. In this paper, we propose the microscopic thermodynamic
description for an arbit... | [
{
"created": "Mon, 17 Apr 2023 01:50:37 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Aug 2023 01:58:50 GMT",
"version": "v2"
}
] | 2023-08-16 | [
[
"Nojiri",
"Shin'ichi",
""
],
[
"Odintsov",
"Sergei D.",
""
]
] | Few parameters dependent generalised entropy includes Tsallis entropy, R{\'e}nyi entropy, Sharma-Mittal entropy, Barrow entropy, Kaniadakis entropy, etc as particular representatives. Its relation to physical systems is not always clear. In this paper, we propose the microscopic thermodynamic description for an arbitra... |
1810.10119 | Edward Anderson | Edward Anderson | Shape Derivatives | 15 pages including 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Shape Theory, together with Shape-and-Scale Theory, comprise Relational
Theory. This consists of $N$-point models on a manifold $M$, for which some
geometrical automorphism group $G$ is regarded as meaningless and is thus
quotiented out from the $N$-point model's product space $\times_{I = 1}^N M$.
Each such model ha... | [
{
"created": "Tue, 23 Oct 2018 22:42:19 GMT",
"version": "v1"
}
] | 2018-10-25 | [
[
"Anderson",
"Edward",
""
]
] | Shape Theory, together with Shape-and-Scale Theory, comprise Relational Theory. This consists of $N$-point models on a manifold $M$, for which some geometrical automorphism group $G$ is regarded as meaningless and is thus quotiented out from the $N$-point model's product space $\times_{I = 1}^N M$. Each such model has ... |
gr-qc/9612020 | Stephen R. Lau | Stephen R. Lau (Technische Universitaet Wien) | Differential Forms and Wave Equations for General Relativity | REVTeX, 26 pages, no figures, 1 macro | Int.J.Mod.Phys. D7 (1998) 857 | 10.1142/S0218271898000577 | TUW-96-09 | gr-qc | null | Recently, Choquet-Bruhat and York and Abrahams, Anderson, Choquet-Bruhat, and
York (AACY) have cast the 3+1 evolution equations of general relativity in
gauge-covariant and causal ``first-order symmetric hyperbolic form,'' thereby
cleanly separating physical from gauge degrees of freedom in the Cauchy problem
for gen... | [
{
"created": "Mon, 9 Dec 1996 17:58:50 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Lau",
"Stephen R.",
"",
"Technische Universitaet Wien"
]
] | Recently, Choquet-Bruhat and York and Abrahams, Anderson, Choquet-Bruhat, and York (AACY) have cast the 3+1 evolution equations of general relativity in gauge-covariant and causal ``first-order symmetric hyperbolic form,'' thereby cleanly separating physical from gauge degrees of freedom in the Cauchy problem for gener... |
1911.05678 | Edward Anderson | Edward Anderson | Comparative Theory of Background Independence | 14 pages including 6 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Lie claw digraph has recently been shown to control Background
Independence and thus both the Problem of Time and the nature of Physical Law.
This is established for Flat and Differential Geometry with varying amounts of
extra mathematical structure. This Lie claw digraph has Generator Closure at
its centre, Rela... | [
{
"created": "Wed, 13 Nov 2019 17:56:14 GMT",
"version": "v1"
}
] | 2019-11-14 | [
[
"Anderson",
"Edward",
""
]
] | The Lie claw digraph has recently been shown to control Background Independence and thus both the Problem of Time and the nature of Physical Law. This is established for Flat and Differential Geometry with varying amounts of extra mathematical structure. This Lie claw digraph has Generator Closure at its centre, Relati... |
2003.13364 | Alesandro Santos | W. D. R. Jesus and A. F. Santos | G\"{o}del-type universes in bumblebee gravity | 13 pages, accepted for publication in IJMPA | null | 10.1142/S0217751X20500505 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The bumblebee field coupled with gravity is considered. This gravitational
theory exhibits spontaneous breaking of Lorentz symmetry. The G\"{o}del-type
universe is introduced and then the causality and its violation are studied.
Causal and non-causal G\"{o}del-type solutions are obtained for different
content of matt... | [
{
"created": "Mon, 30 Mar 2020 11:52:32 GMT",
"version": "v1"
}
] | 2020-05-20 | [
[
"Jesus",
"W. D. R.",
""
],
[
"Santos",
"A. F.",
""
]
] | The bumblebee field coupled with gravity is considered. This gravitational theory exhibits spontaneous breaking of Lorentz symmetry. The G\"{o}del-type universe is introduced and then the causality and its violation are studied. Causal and non-causal G\"{o}del-type solutions are obtained for different content of matter... |
2204.08914 | Matteo Luca Ruggiero | Matteo Luca Ruggiero | Gravitomagnetic induction in the field of a gravitational wave | 16 pages, LaTeX, 4 eps figures; revised to match the version accepted
for publication by General Relativity and Gravitation | Gen Relativ Gravit 54, 97 (2022) | 10.1007/s10714-022-02983-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The interaction of a plane gravitational wave with test masses can be
described in the proper detector frame, using Fermi coordinates, in terms of a
gravitoelectric and a gravitomagnetic field. We use this approach to calculate
the displacements produced by gravitational waves up to second order in the
distance param... | [
{
"created": "Tue, 19 Apr 2022 14:22:21 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Aug 2022 14:46:50 GMT",
"version": "v2"
}
] | 2022-09-16 | [
[
"Ruggiero",
"Matteo Luca",
""
]
] | The interaction of a plane gravitational wave with test masses can be described in the proper detector frame, using Fermi coordinates, in terms of a gravitoelectric and a gravitomagnetic field. We use this approach to calculate the displacements produced by gravitational waves up to second order in the distance paramet... |
2003.13464 | Francisco A. Brito | M.A. Anacleto, F.A. Brito, J.A.V. Campos, E. Passos | Quantum-corrected scattering and absorption of a Schwarzschild black
hole with GUP | 10 pages, 4 figures, references added | null | 10.1016/j.physletb.2020.135830 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we have implemented quantum corrections for the Schwarzschild
black hole metric using the generalized uncertainty principle (GUP) in order to
investigate the scattering process. We mainly compute, at the low energy limit,
the differential scattering and absorption cross section by using the partial
wave... | [
{
"created": "Fri, 27 Mar 2020 14:59:50 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Apr 2020 17:56:27 GMT",
"version": "v2"
}
] | 2020-10-28 | [
[
"Anacleto",
"M. A.",
""
],
[
"Brito",
"F. A.",
""
],
[
"Campos",
"J. A. V.",
""
],
[
"Passos",
"E.",
""
]
] | In this paper we have implemented quantum corrections for the Schwarzschild black hole metric using the generalized uncertainty principle (GUP) in order to investigate the scattering process. We mainly compute, at the low energy limit, the differential scattering and absorption cross section by using the partial wave m... |
1406.2147 | Erico Tanaka | Takayoshi Ootsuka, Ryoko Yahagi, Muneyuki Ishida, Erico Tanaka | Energy-momentum conservation laws in Finsler/Kawaguchi Lagrangian
formulation | 41pages, ver.3 | null | 10.1088/0264-9381/32/16/165016 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reformulate the standard Lagrangian formalism to a reparameterisation
invariant Lagrangian formalism by means of Finsler and Kawaguchi geometry. In
our formalism, various types of symmetries that appears in theories of physics
are expressed geometrically by symmetries of Finsler (Kawaguchi) metric, and
the conserv... | [
{
"created": "Mon, 9 Jun 2014 12:03:50 GMT",
"version": "v1"
},
{
"created": "Sat, 12 Jul 2014 06:31:15 GMT",
"version": "v2"
},
{
"created": "Tue, 16 Jun 2015 18:03:02 GMT",
"version": "v3"
}
] | 2015-08-26 | [
[
"Ootsuka",
"Takayoshi",
""
],
[
"Yahagi",
"Ryoko",
""
],
[
"Ishida",
"Muneyuki",
""
],
[
"Tanaka",
"Erico",
""
]
] | We reformulate the standard Lagrangian formalism to a reparameterisation invariant Lagrangian formalism by means of Finsler and Kawaguchi geometry. In our formalism, various types of symmetries that appears in theories of physics are expressed geometrically by symmetries of Finsler (Kawaguchi) metric, and the conservat... |
1401.7172 | Helmut Friedrich | Helmut Friedrich | On the AdS stability problem | 12 pages | null | 10.1088/0264-9381/31/10/105001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the notion of stability and the choice of boundary conditions for
AdS-type space-times and point out difficulties in the construction of Cauchy
data which arise if reflective boundary conditions are imposed.
| [
{
"created": "Tue, 28 Jan 2014 13:24:37 GMT",
"version": "v1"
}
] | 2015-06-18 | [
[
"Friedrich",
"Helmut",
""
]
] | We discuss the notion of stability and the choice of boundary conditions for AdS-type space-times and point out difficulties in the construction of Cauchy data which arise if reflective boundary conditions are imposed. |
2303.16089 | Alexandre Landry | Alexandre Landry and Robert J. van den Hoogen | Teleparallel Minkowski Spacetime with Perturbative Approach for
Teleparallel Gravity on a Proper Frame | 33 pages, Published in Universe | Universe 2023, 9(5), 232 | 10.3390/universe9050232 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | A complete perturbation theory suitable for teleparallel gravity is
developed. The proposed perturbation scheme takes into account perturbations of
the coframe, the metric, and the spin-connection, while ensuring that the
resulting perturbed system continues to describe a teleparallel gravity
situation. The resulting... | [
{
"created": "Tue, 28 Mar 2023 15:56:51 GMT",
"version": "v1"
},
{
"created": "Mon, 15 May 2023 17:13:30 GMT",
"version": "v2"
}
] | 2023-05-16 | [
[
"Landry",
"Alexandre",
""
],
[
"Hoogen",
"Robert J. van den",
""
]
] | A complete perturbation theory suitable for teleparallel gravity is developed. The proposed perturbation scheme takes into account perturbations of the coframe, the metric, and the spin-connection, while ensuring that the resulting perturbed system continues to describe a teleparallel gravity situation. The resulting p... |
1808.03346 | Alexander Zhidenko | R. A. Konoplya, Z. Stuchl\'ik, A. Zhidenko | Massive nonminimally coupled scalar field in Reissner-Nordstr\"om
spacetime: Long-lived quasinormal modes and instability | 8 pages, 4 figures | Phys. Rev. D 98, 104033 (2018) | 10.1103/PhysRevD.98.104033 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Here we show that the phenomenon of arbitrarily long-lived quasinormal modes
(called quasiresonances) of a massive scalar field in the vicinity of a black
hole is not an artifact of the test field approximation, but takes place also
when the (derivative) coupling of a scalar field with the Einstein tensor is
taken in... | [
{
"created": "Thu, 9 Aug 2018 21:07:08 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Nov 2018 11:15:45 GMT",
"version": "v2"
}
] | 2018-11-26 | [
[
"Konoplya",
"R. A.",
""
],
[
"Stuchlík",
"Z.",
""
],
[
"Zhidenko",
"A.",
""
]
] | Here we show that the phenomenon of arbitrarily long-lived quasinormal modes (called quasiresonances) of a massive scalar field in the vicinity of a black hole is not an artifact of the test field approximation, but takes place also when the (derivative) coupling of a scalar field with the Einstein tensor is taken into... |
0907.5352 | Savitri V. Iyer | Savitri V. Iyer and Edward C. Hansen | Light's Bending Angle in the Equatorial Plane of a Kerr Black Hole | 6 figures | Phys.Rev.D80:124023,2009 | 10.1103/PhysRevD.80.124023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present here a detailed derivation of an explicit spin-dependent
expression for the bending angle of light as it traverses in the equatorial
plane of a spinning black hole. We show that the deflection produced in the
presence of the black hole angular momentum explicitly depends on whether the
motion of the light ... | [
{
"created": "Thu, 30 Jul 2009 14:14:54 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Iyer",
"Savitri V.",
""
],
[
"Hansen",
"Edward C.",
""
]
] | We present here a detailed derivation of an explicit spin-dependent expression for the bending angle of light as it traverses in the equatorial plane of a spinning black hole. We show that the deflection produced in the presence of the black hole angular momentum explicitly depends on whether the motion of the light ra... |
1112.3077 | Ioannis Kamaretsos | Ioannis Kamaretsos | From black holes to their progenitors: A full population study in
measuring black hole binary parameters from ringdown signals | 12 pages, 9 figures, accepted for publication in Amaldi 9 & NRDA
Proceedings, Journal of Physics: Conference Series | null | 10.1088/1742-6596/363/1/012047 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A perturbed black hole emits gravitational radiation, usually termed the
ringdown signal, whose frequency and time-constant depends on the mass and spin
of the black hole. I investigate the case of a binary black hole merger
resulting from two initially non-spinning black holes of various mass ratios,
in quasi-circul... | [
{
"created": "Wed, 14 Dec 2011 00:28:50 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Mar 2012 12:26:45 GMT",
"version": "v2"
}
] | 2015-06-03 | [
[
"Kamaretsos",
"Ioannis",
""
]
] | A perturbed black hole emits gravitational radiation, usually termed the ringdown signal, whose frequency and time-constant depends on the mass and spin of the black hole. I investigate the case of a binary black hole merger resulting from two initially non-spinning black holes of various mass ratios, in quasi-circular... |
2201.09984 | Marco Cavagli\`a | Marco Cavaglia | Characterization of gravitational-wave detector noise with fractals | 20 pages, 14 figures | null | 10.1088/1361-6382/ac7325 | LIGO-P2200005 | gr-qc physics.comp-ph physics.data-an physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new method, based on fractal analysis, to characterize the
output of a physical detector that is in the form of a set of real-valued,
discrete physical measurements. We apply the method to gravitational-wave data
from the latest observing run of the Laser Interferometer Gravitational-wave
Observatory. We... | [
{
"created": "Mon, 24 Jan 2022 22:27:51 GMT",
"version": "v1"
}
] | 2022-06-29 | [
[
"Cavaglia",
"Marco",
""
]
] | We present a new method, based on fractal analysis, to characterize the output of a physical detector that is in the form of a set of real-valued, discrete physical measurements. We apply the method to gravitational-wave data from the latest observing run of the Laser Interferometer Gravitational-wave Observatory. We s... |
1704.00747 | T. P. Singh | Tejinder P. Singh | A new length scale for quantum gravity | 7 pages, 1 figure; v2 - minor typo corrected, Honorable Mention in
the Gravity Research Foundation 2017 Awards for Essays on Gravitation | Int. J. Mod. Phys 26 (2017) 1743015 | 10.1142/S0218271817170155 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show why and how Compton wavelength and Schwarzschild radius should be
combined into one single new length scale, which we call the
Compton-Schwarzschild length. Doing so offers a resolution of the black hole
information loss paradox, and suggests Planck mass remnant black holes as
candidates for dark matter. It a... | [
{
"created": "Mon, 3 Apr 2017 18:07:56 GMT",
"version": "v1"
},
{
"created": "Mon, 15 May 2017 15:01:20 GMT",
"version": "v2"
}
] | 2017-10-13 | [
[
"Singh",
"Tejinder P.",
""
]
] | We show why and how Compton wavelength and Schwarzschild radius should be combined into one single new length scale, which we call the Compton-Schwarzschild length. Doing so offers a resolution of the black hole information loss paradox, and suggests Planck mass remnant black holes as candidates for dark matter. It als... |
gr-qc/0005007 | Ian G. Moss | Ian G Moss, N Shiiki, E Winstanley | Monopole Black Hole Skyrmions | 16 pages including 6 figures | Class.Quant.Grav.17:4161-4174,2000 | 10.1088/0264-9381/17/20/301 | null | gr-qc | null | Charged black hole solutions with pion hair are discussed. These can be used
to study monopole black hole catalysis of proton decay. There also exist multi-
black hole skyrmion solutions with BPS monopole behavior.
| [
{
"created": "Tue, 2 May 2000 10:25:54 GMT",
"version": "v1"
}
] | 2011-07-19 | [
[
"Moss",
"Ian G",
""
],
[
"Shiiki",
"N",
""
],
[
"Winstanley",
"E",
""
]
] | Charged black hole solutions with pion hair are discussed. These can be used to study monopole black hole catalysis of proton decay. There also exist multi- black hole skyrmion solutions with BPS monopole behavior. |
gr-qc/0305101 | Guillaume Faye | Guillaume Faye, Gerhard Schaefer | Optimizing the third-and-a-half post-Newtonian gravitational
radiation-reaction force for numerical simulations | 22 pages to appear in Physical Review D | Phys.Rev.D68:084001,2003 | 10.1103/PhysRevD.68.084001 | null | gr-qc | null | The gravitational radiation-reaction force acting on perfect fluids at 3.5
post-Newtonian order is cast into a form which is directly applicable to
numerical simulations. Extensive use is made of metric-coefficient changes
induced by functional coordinate transformations, of the continuity equation,
as well as of the... | [
{
"created": "Tue, 27 May 2003 17:56:51 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Faye",
"Guillaume",
""
],
[
"Schaefer",
"Gerhard",
""
]
] | The gravitational radiation-reaction force acting on perfect fluids at 3.5 post-Newtonian order is cast into a form which is directly applicable to numerical simulations. Extensive use is made of metric-coefficient changes induced by functional coordinate transformations, of the continuity equation, as well as of the e... |
1103.4897 | Dongfeng Gao | Dongfeng Gao, Peng Ju, Baocheng Zhang, and Mingsheng Zhan | Gravitational-wave Detection With Matter-wave Interferometers Based On
Standing Light Waves | 7 pages, 3 figures. To be published in General Relativity and
Gravitation | Gen.Rel.Grav.43:2027-2036,2011 | 10.1007/s10714-011-1173-y | null | gr-qc physics.atom-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the possibility of detecting gravitational-waves with matter-wave
interferometers, where atom beams are split, deflected and recombined totally
by standing light waves. Our calculation shows that the phase shift is
dominated by terms proportional to the time derivative of the gravitational
wave amplitude. Ta... | [
{
"created": "Fri, 25 Mar 2011 03:00:26 GMT",
"version": "v1"
}
] | 2011-06-02 | [
[
"Gao",
"Dongfeng",
""
],
[
"Ju",
"Peng",
""
],
[
"Zhang",
"Baocheng",
""
],
[
"Zhan",
"Mingsheng",
""
]
] | We study the possibility of detecting gravitational-waves with matter-wave interferometers, where atom beams are split, deflected and recombined totally by standing light waves. Our calculation shows that the phase shift is dominated by terms proportional to the time derivative of the gravitational wave amplitude. Taki... |
1502.02737 | Sean Stotyn | Sean Stotyn | A Tale of Two Horizons | 5 pages, 4 figures, submitted to Can. J. Phys. as part of Theory
Canada 9 conference proceedings | null | 10.1139/cjp-2015-0091 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I revisit the fate of coinciding horizons and the volume between them in the
extremal limit of spherically symmetric black holes in four spacetime
dimensions, focusing on the Schwarzschild de Sitter black hole for
concreteness. The two Killing horizons in the limit spacetime that are
traditionally identified with the... | [
{
"created": "Mon, 9 Feb 2015 23:49:29 GMT",
"version": "v1"
}
] | 2023-07-19 | [
[
"Stotyn",
"Sean",
""
]
] | I revisit the fate of coinciding horizons and the volume between them in the extremal limit of spherically symmetric black holes in four spacetime dimensions, focusing on the Schwarzschild de Sitter black hole for concreteness. The two Killing horizons in the limit spacetime that are traditionally identified with the l... |
2109.12288 | Sirachak Panpanich Mr. | Sirachak Panpanich, Kei-ichi Maeda | Cosmological Dynamics of Cuscuta-Galileon Gravity | 11 pages, 4 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study cosmological dynamics of the cuscuta-galileon gravity with a
potential term by using the dynamical system approach. This model is galileon
generalization of the cuscuton gravity where we add a potential term to the
theory in order to obtain the radiation and matter dominated eras. The
exponential potential c... | [
{
"created": "Sat, 25 Sep 2021 06:27:54 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Mar 2023 14:10:11 GMT",
"version": "v2"
}
] | 2023-03-23 | [
[
"Panpanich",
"Sirachak",
""
],
[
"Maeda",
"Kei-ichi",
""
]
] | We study cosmological dynamics of the cuscuta-galileon gravity with a potential term by using the dynamical system approach. This model is galileon generalization of the cuscuton gravity where we add a potential term to the theory in order to obtain the radiation and matter dominated eras. The exponential potential can... |
2403.01366 | Rubens R. S. Oliveira | R. R. S. Oliveira | Relativistic and nonrelativistic Landau levels for Dirac fermions in the
cosmic string spacetime in the context of rainbow gravity | 17 pages, 4 figures | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the relativistic and nonrelativistic Landau levels
for Dirac fermions in the cosmic string spacetime in the context of rainbow
gravity in $(3+1)$-dimensions, where we work with the curved Dirac equation
with minimal coupling in cylindrical coordinates. Using the tetrads formalism
of General Re... | [
{
"created": "Sun, 3 Mar 2024 01:48:15 GMT",
"version": "v1"
}
] | 2024-03-05 | [
[
"Oliveira",
"R. R. S.",
""
]
] | In this paper, we study the relativistic and nonrelativistic Landau levels for Dirac fermions in the cosmic string spacetime in the context of rainbow gravity in $(3+1)$-dimensions, where we work with the curved Dirac equation with minimal coupling in cylindrical coordinates. Using the tetrads formalism of General Rela... |
gr-qc/0305061 | Matt Visser | Carlos Barcelo (University of Portsmouth), Stefano Liberati
(University of Mayland), Matt Visser (Victoria University of Wellington) | Analogue models for FRW cosmologies | This essay was awarded an "honourable mention" in the 2003 essay
competition of the Gravity Research Foundation. Uses revtex4; 6 pages in
single-column format | Int.J.Mod.Phys. D12 (2003) 1641-1650 | 10.1142/S0218271803004092 | null | gr-qc | null | It is by now well known that various condensed matter systems may be used to
mimic many of the kinematic aspects of general relativity, and in particular of
curved-spacetime quantum field theory. In this essay we will take a look at
what would be needed to mimic a cosmological spacetime -- to be precise a
spatially f... | [
{
"created": "Fri, 16 May 2003 00:44:56 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Barcelo",
"Carlos",
"",
"University of Portsmouth"
],
[
"Liberati",
"Stefano",
"",
"University of Mayland"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | It is by now well known that various condensed matter systems may be used to mimic many of the kinematic aspects of general relativity, and in particular of curved-spacetime quantum field theory. In this essay we will take a look at what would be needed to mimic a cosmological spacetime -- to be precise a spatially fla... |
2109.11137 | Dipanjan Dey | Parth Bambhaniya, Jay S. Verma, Dipanjan Dey, Pankaj S. Joshi, Ashok
B. Joshi | Lense-Thirring effect and precession of timelike geodesics in slowly
rotating black hole and naked singularity spacetimes | 14 pages, 20 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we investigate the properties of the Lense-Thirring precession
frequency and periastron precession of the relativistic bound orbits in slowly
rotating naked singularity spacetimes. We show that the precession frequencies
of a stationary test gyroscope are quite unique in slowly rotating naked
singulari... | [
{
"created": "Thu, 23 Sep 2021 04:39:26 GMT",
"version": "v1"
}
] | 2021-09-24 | [
[
"Bambhaniya",
"Parth",
""
],
[
"Verma",
"Jay S.",
""
],
[
"Dey",
"Dipanjan",
""
],
[
"Joshi",
"Pankaj S.",
""
],
[
"Joshi",
"Ashok B.",
""
]
] | In this paper, we investigate the properties of the Lense-Thirring precession frequency and periastron precession of the relativistic bound orbits in slowly rotating naked singularity spacetimes. We show that the precession frequencies of a stationary test gyroscope are quite unique in slowly rotating naked singularity... |
gr-qc/9907104 | Vasilios Zarikas | T. Christodoulakis, G. Kofinas and Vasilios Zarikas | The untilted diffuse matter Bianchi V Universe | (RevTeX) 23 pages, 2 figures, to appear in Physics Letters A | Phys.Lett. A275 (2000) 182-192 | 10.1016/S0375-9601(00)00579-X | null | gr-qc | null | A diffuse matter filled Type V Universe is studied. The anisotropic
behaviour, the distortion caused to the CMBR and the parameter region allowed
by present cosmological bounds are examined. It is shown how the overall sky
pattern of temperature anisotropies changes under a non-infinitesimal spatial
coordinate transf... | [
{
"created": "Fri, 30 Jul 1999 11:50:51 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Sep 1999 16:07:11 GMT",
"version": "v2"
},
{
"created": "Wed, 23 Aug 2000 14:29:30 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Christodoulakis",
"T.",
""
],
[
"Kofinas",
"G.",
""
],
[
"Zarikas",
"Vasilios",
""
]
] | A diffuse matter filled Type V Universe is studied. The anisotropic behaviour, the distortion caused to the CMBR and the parameter region allowed by present cosmological bounds are examined. It is shown how the overall sky pattern of temperature anisotropies changes under a non-infinitesimal spatial coordinate transfor... |
1610.09424 | Brajesh Gupt | Abhay Ashtekar and Brajesh Gupt | Initial conditions for cosmological perturbations | 23 pages, 1 figure | Class. Quant. Grav. 34, 035004 (2017) (23 pp), | null | null | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Penrose proposed that the big bang singularity should be constrained by
requiring that the Weyl curvature vanishes there. The idea behind this past
hypothesis is attractive because it constrains the initial conditions for the
universe in geometric terms and is not confined to a specific early universe
paradigm. Howev... | [
{
"created": "Fri, 28 Oct 2016 23:07:01 GMT",
"version": "v1"
}
] | 2017-01-19 | [
[
"Ashtekar",
"Abhay",
""
],
[
"Gupt",
"Brajesh",
""
]
] | Penrose proposed that the big bang singularity should be constrained by requiring that the Weyl curvature vanishes there. The idea behind this past hypothesis is attractive because it constrains the initial conditions for the universe in geometric terms and is not confined to a specific early universe paradigm. However... |
gr-qc/0502079 | Chunnong Zhao | C. Zhao, L. Ju, J. Degallaix, S. Gras, and D. G. Blair | Parametric instabilities and their control in advanced interferometer GW
detectors | 5 pages, 4 figures | Phys.Rev.Lett. 94 (2005) 121102 | 10.1103/PhysRevLett.94.121102 | null | gr-qc | null | A detailed simulation of Advanced LIGO test mass optical cavities shows that
parametric instabilities will excite acoustic modes in the test masses in the
frequency range 28-35 kHz and 64-72 kHz. Using nominal Advanced LIGO optical
cavity parameters with fused silica test masses, parametric instability excites
7 acou... | [
{
"created": "Fri, 18 Feb 2005 02:46:01 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Zhao",
"C.",
""
],
[
"Ju",
"L.",
""
],
[
"Degallaix",
"J.",
""
],
[
"Gras",
"S.",
""
],
[
"Blair",
"D. G.",
""
]
] | A detailed simulation of Advanced LIGO test mass optical cavities shows that parametric instabilities will excite acoustic modes in the test masses in the frequency range 28-35 kHz and 64-72 kHz. Using nominal Advanced LIGO optical cavity parameters with fused silica test masses, parametric instability excites 7 acoust... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.