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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1912.03897 | Waleed El Hanafy | G.G.L. Nashed, W. El Hanafy, S.D. Odintsov and V.K. Oikonomou | Thermodynamical correspondence of $f(R)$ gravity in Jordan and Einstein
frames | LaTeX2e (revtex4-1): 22 pages, 7 figures | Int. J. Mod. Phys. D, Vol. 29, No. 10, 1750154 (2020) | 10.1142/S021827182050090X | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the thermodynamical aspects of $f(R)$ gravity in the Jordan and the
Einstein frame, and we investigate the corresponding equivalence of the
thermodynamical quantities in the two frames. We examine static spherically
symmetric black hole solutions with constant Ricci scalar curvature $R$, and as
we demonstrat... | [
{
"created": "Mon, 9 Dec 2019 08:30:07 GMT",
"version": "v1"
}
] | 2020-08-19 | [
[
"Nashed",
"G. G. L.",
""
],
[
"Hanafy",
"W. El",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
]
] | We study the thermodynamical aspects of $f(R)$ gravity in the Jordan and the Einstein frame, and we investigate the corresponding equivalence of the thermodynamical quantities in the two frames. We examine static spherically symmetric black hole solutions with constant Ricci scalar curvature $R$, and as we demonstrate,... |
2401.14116 | Marek Rogatko | Marek Rogatko | Uniqueness of photon sphere for Reissner-Nordstr\"om electric-magnetic
system | 22 pages, RevTex, to be published in Phys.Rev.D15 | null | 10.1103/PhysRevD.109.024056 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Uniqueness of static, asymptotically flat, non-extremal {\it photon sphere}
in Einstein-Maxwell spacetime with electric and magnetic charges has been
proved. Using conformal positive energy theorem, as well as, the positive mass
theorem and adequate conformal transformations, we envisage the two alternative
ways of p... | [
{
"created": "Thu, 25 Jan 2024 11:53:32 GMT",
"version": "v1"
}
] | 2024-03-05 | [
[
"Rogatko",
"Marek",
""
]
] | Uniqueness of static, asymptotically flat, non-extremal {\it photon sphere} in Einstein-Maxwell spacetime with electric and magnetic charges has been proved. Using conformal positive energy theorem, as well as, the positive mass theorem and adequate conformal transformations, we envisage the two alternative ways of pro... |
2210.04588 | Vincent Boudart | Vincent Boudart | A convolutional neural network to distinguish glitches from minute-long
gravitational wave transients | 12 pages, 15 figures | null | 10.1103/PhysRevD.107.024007 | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Gravitational wave bursts are transient signals distinct from compact binary
mergers that arise from a wide variety of astrophysical phenomena. Because most
of these phenomena are poorly modeled, the use of traditional search methods
such as matched filtering is excluded. Bursts include short ($<$10 seconds) and
long... | [
{
"created": "Mon, 10 Oct 2022 11:49:26 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Oct 2022 08:26:52 GMT",
"version": "v2"
}
] | 2023-01-18 | [
[
"Boudart",
"Vincent",
""
]
] | Gravitational wave bursts are transient signals distinct from compact binary mergers that arise from a wide variety of astrophysical phenomena. Because most of these phenomena are poorly modeled, the use of traditional search methods such as matched filtering is excluded. Bursts include short ($<$10 seconds) and long (... |
1303.5944 | Jacques Smulevici | Gustav Holzegel and Jacques Smulevici | Quasimodes and a Lower Bound on the Uniform Energy Decay Rate for
Kerr-AdS Spacetimes | null | Anal. PDE 7 (2014) 1057-1090 | 10.2140/apde.2014.7.1057 | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct quasimodes for the Klein-Gordon equation on the black hole
exterior of Kerr-Anti-de Sitter (Kerr-AdS) spacetimes. Such quasi-modes are
associated with time-periodic approximate solutions of the Klein Gordon
equation and provide natural candidates to probe the decay of solutions on
these backgrounds. They... | [
{
"created": "Sun, 24 Mar 2013 12:54:54 GMT",
"version": "v1"
}
] | 2016-01-20 | [
[
"Holzegel",
"Gustav",
""
],
[
"Smulevici",
"Jacques",
""
]
] | We construct quasimodes for the Klein-Gordon equation on the black hole exterior of Kerr-Anti-de Sitter (Kerr-AdS) spacetimes. Such quasi-modes are associated with time-periodic approximate solutions of the Klein Gordon equation and provide natural candidates to probe the decay of solutions on these backgrounds. They a... |
1612.07865 | Baocheng Zhang | Baocheng Zhang and Li You | Infinite Volume of Noncommutative Black Hole Wrapped by Finite Surface | null | Physics Letter B 765, 226 (2017) | 10.1016/j.physletb.2016.12.027 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The volume of a black hole under noncommutative spacetime background is found
to be infinite, in contradiction with the surface area of a black hole, or its
Bekenstein-Hawking (BH) entropy, which is well-known to be finite. Our result
rules out the possibility of interpreting the entropy of a black hole by
counting t... | [
{
"created": "Fri, 23 Dec 2016 03:58:18 GMT",
"version": "v1"
}
] | 2016-12-26 | [
[
"Zhang",
"Baocheng",
""
],
[
"You",
"Li",
""
]
] | The volume of a black hole under noncommutative spacetime background is found to be infinite, in contradiction with the surface area of a black hole, or its Bekenstein-Hawking (BH) entropy, which is well-known to be finite. Our result rules out the possibility of interpreting the entropy of a black hole by counting the... |
gr-qc/9908011 | Abel Camacho Quintana | A. Camacho (Astrophysikalisches Institut Potsdam) and A.
Camacho-Galvan (DEP-FI-UNAM) | Time emergence by self-measurement in a quantum anisotropic universe | 19 pages, accepted in Nuovo Cimento B | Nuovo Cim. B114 (1999) 923-938 | null | null | gr-qc quant-ph | null | We begin this work calculating Halliwell's propagator in the case of a
Mixmaster universe with small anisotropy. Afterwards in the context of the
Decoherence Model we introduce in our system terms that comprise the
self-measurement of the universe of this model by higher multipoles of matter.
Analyzing self-measureme... | [
{
"created": "Tue, 3 Aug 1999 15:57:51 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Camacho",
"A.",
"",
"Astrophysikalisches Institut Potsdam"
],
[
"Camacho-Galvan",
"A.",
"",
"DEP-FI-UNAM"
]
] | We begin this work calculating Halliwell's propagator in the case of a Mixmaster universe with small anisotropy. Afterwards in the context of the Decoherence Model we introduce in our system terms that comprise the self-measurement of the universe of this model by higher multipoles of matter. Analyzing self-measurement... |
gr-qc/0302059 | Andrzej Okolow | Andrzej Okolow and Jerzy Lewandowski | Diffeomorphism covariant representations of the holonomy-flux
star-algebra | 37 pages, no figures, LaTeX2e, to be published in Class. Quant. Grav;
typos corrected, minor clarifying remarks | Class.Quant.Grav. 20 (2003) 3543-3568 | 10.1088/0264-9381/20/16/302 | null | gr-qc | null | Recently, Sahlmann proposed a new, algebraic point of view on the loop
quantization. He brought up the issue of a star-algebra underlying that
framework, studied the algebra consisting of the fluxes and holonomies and
characterized its representations. We define the diffeomorphism covariance of a
representation of th... | [
{
"created": "Fri, 14 Feb 2003 18:03:58 GMT",
"version": "v1"
},
{
"created": "Sun, 22 Jun 2003 23:20:39 GMT",
"version": "v2"
},
{
"created": "Tue, 24 Jun 2003 16:54:30 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Okolow",
"Andrzej",
""
],
[
"Lewandowski",
"Jerzy",
""
]
] | Recently, Sahlmann proposed a new, algebraic point of view on the loop quantization. He brought up the issue of a star-algebra underlying that framework, studied the algebra consisting of the fluxes and holonomies and characterized its representations. We define the diffeomorphism covariance of a representation of the ... |
gr-qc/0503102 | Brihaye Yves | Yves Brihaye (Universite de Mons-Hainaut, Belgium) and Betti Hartmann
(IUB, Germany) | Deformed black strings in 5-dimensional Einstein-Yang-Mills theory | 8 Revtex pages; 4 eps figures; references added | Class.Quant.Grav. 22 (2005) 5145-5156 | 10.1088/0264-9381/22/23/014 | null | gr-qc hep-th | null | We construct the first examples of deformed non-abelian black strings in a
5-dimensional Einstein-Yang-Mills model. Assuming all fields to be independent
of the extra coordinate, we construct deformed black strings, which in the
4-dimensional picture correspond to axially symmetric non-abelian black holes
in gravity-... | [
{
"created": "Wed, 23 Mar 2005 17:08:36 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Apr 2005 14:47:19 GMT",
"version": "v2"
},
{
"created": "Mon, 18 Apr 2005 09:56:15 GMT",
"version": "v3"
},
{
"created": "Fri, 14 Oct 2005 08:11:32 GMT",
"version": "v4"
}
] | 2009-11-11 | [
[
"Brihaye",
"Yves",
"",
"Universite de Mons-Hainaut, Belgium"
],
[
"Hartmann",
"Betti",
"",
"IUB, Germany"
]
] | We construct the first examples of deformed non-abelian black strings in a 5-dimensional Einstein-Yang-Mills model. Assuming all fields to be independent of the extra coordinate, we construct deformed black strings, which in the 4-dimensional picture correspond to axially symmetric non-abelian black holes in gravity-di... |
1407.5033 | Alessandro Nagar | Alessandro Nagar, Enno Harms, Sebastiano Bernuzzi and An{\i}l
Zengino\u{g}lu | The antikick strikes back: recoil velocities for nearly-extremal binary
black hole mergers in the test-mass limit | 9 pages, 6 figures, submitted to Phys. Rev. D | null | 10.1103/PhysRevD.90.124086 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves emitted from a generic binary black-hole merger carry
away linear momentum anisotropically, resulting in a gravitational recoil, or
"kick", of the center of mass. For certain merger configurations the time
evolution of the magnitude of the kick velocity has a local maximum followed by
a sudden dro... | [
{
"created": "Fri, 18 Jul 2014 15:20:52 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Nagar",
"Alessandro",
""
],
[
"Harms",
"Enno",
""
],
[
"Bernuzzi",
"Sebastiano",
""
],
[
"Zenginoğlu",
"Anıl",
""
]
] | Gravitational waves emitted from a generic binary black-hole merger carry away linear momentum anisotropically, resulting in a gravitational recoil, or "kick", of the center of mass. For certain merger configurations the time evolution of the magnitude of the kick velocity has a local maximum followed by a sudden drop.... |
gr-qc/0203062 | Amritanshu Shukla | G S Khadekar, Bavana Butey (Department of Mathematics, Nagpur
University, Nagpur) | Bimetric Gravitation and Cosmology in Five Dimension | Latex 8 pages, no figure | null | null | null | gr-qc | null | Lee. et.al. (1976) analysed the bimetric theory with the help of
parameterized post Newtonian (PPN) formalism. They found that the post
Newtonian limit of the theory is identical with that of general theory of
relativity except for their PPN parameter $\alpha_{2}$, on the basis of
cosmological considerations. In the ... | [
{
"created": "Tue, 19 Mar 2002 03:48:19 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Khadekar",
"G S",
"",
"Department of Mathematics, Nagpur\n University, Nagpur"
],
[
"Butey",
"Bavana",
"",
"Department of Mathematics, Nagpur\n University, Nagpur"
]
] | Lee. et.al. (1976) analysed the bimetric theory with the help of parameterized post Newtonian (PPN) formalism. They found that the post Newtonian limit of the theory is identical with that of general theory of relativity except for their PPN parameter $\alpha_{2}$, on the basis of cosmological considerations. In the pr... |
1902.10726 | Pedro Gir\~ao | Jo\~ao L. Costa and Pedro M. Gir\~ao | Higher Order Linear Stability and Instability of Reissner-Nordstr\"om's
Cauchy Horizon | 22 pages, 2 figures | null | null | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider smooth solutions of the wave equation, on a fixed black hole
region of a subextremal Reissner-Nordstr\"om (asymptotically flat, de Sitter or
anti-de Sitter) spacetime, whose restrictions to the event horizon have compact
support. We provide criteria, in terms of surface gravities, for the waves to
remain ... | [
{
"created": "Wed, 27 Feb 2019 19:00:14 GMT",
"version": "v1"
}
] | 2019-03-01 | [
[
"Costa",
"João L.",
""
],
[
"Girão",
"Pedro M.",
""
]
] | We consider smooth solutions of the wave equation, on a fixed black hole region of a subextremal Reissner-Nordstr\"om (asymptotically flat, de Sitter or anti-de Sitter) spacetime, whose restrictions to the event horizon have compact support. We provide criteria, in terms of surface gravities, for the waves to remain in... |
gr-qc/0008032 | Jorge Pullin | Rodolfo Gambini and Jorge Pullin | The large cosmological constant approximation to classical and quantum
gravity: model examples | 21 pages, RevTex, 2 figures with epsfig | Class.Quant.Grav. 17 (2000) 4515-4540 | 10.1088/0264-9381/17/21/311 | CGPG-00/8-3 | gr-qc hep-th | null | We have recently introduced an approach for studying perturbatively classical
and quantum canonical general relativity. The perturbative technique appears to
preserve many of the attractive features of the non-perturbative quantization
approach based on Ashtekar's new variables and spin networks. With this
approach o... | [
{
"created": "Mon, 14 Aug 2000 20:26:10 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Aug 2000 13:14:37 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Gambini",
"Rodolfo",
""
],
[
"Pullin",
"Jorge",
""
]
] | We have recently introduced an approach for studying perturbatively classical and quantum canonical general relativity. The perturbative technique appears to preserve many of the attractive features of the non-perturbative quantization approach based on Ashtekar's new variables and spin networks. With this approach one... |
gr-qc/9912091 | Luca Lusanna | Luca Lusanna (INFN, Firenze) | Tetrad Gravity and Dirac's Observables | 11 pages, Revtex file | Nucl.Phys.Proc.Suppl. 88 (2000) 301-307 | 10.1016/S0920-5632(00)00790-8 | null | gr-qc astro-ph hep-th | null | Talk given at the Conference ``Constrained Dynamics and Quantum Gravity 99'',
Villasimius (Sardinia, Italy), September 13-17, 1999
| [
{
"created": "Tue, 21 Dec 1999 14:52:34 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Lusanna",
"Luca",
"",
"INFN, Firenze"
]
] | Talk given at the Conference ``Constrained Dynamics and Quantum Gravity 99'', Villasimius (Sardinia, Italy), September 13-17, 1999 |
gr-qc/0010039 | Vladimir Zhelnorovich | V.A.Zhelnorovich | General exact solution of the Einstein-Dirac equations with the
cosmological constant in homogeneous space | 12 pages, RevTex, minor correction | J.Exp.Theor.Phys. 98 (2004) 619-628; Zh.Eksp.Teor.Fiz. 125 (2004)
707-716 | 10.1134/1.1757661 | null | gr-qc | null | The general exact solution of the Einstein-Dirac equations with cosmological
constant in the homogeneous Riemannian space of the Bianchi 1 type is obtained.
| [
{
"created": "Tue, 10 Oct 2000 15:15:35 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Oct 2000 19:38:06 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Zhelnorovich",
"V. A.",
""
]
] | The general exact solution of the Einstein-Dirac equations with cosmological constant in the homogeneous Riemannian space of the Bianchi 1 type is obtained. |
2209.02698 | Grigory Volovik | G.E. Volovik | Painleve-Gullstrand coordinates for Schwarzschild-de Sitter spacetime | 6 pages, no figures | null | 10.1016/j.aop.2023.169219 | null | gr-qc cond-mat.other | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Painleve-Gullstrand coordinates are extended to describe the black hole
in the cosmological environment: the Schwarzschild-de-Sitter black hole, which
has two horizons. The extension is made using the Arnowitt-Deser-Misner
formalism. In this extension, which describes the metric in the whole range of
radial coord... | [
{
"created": "Mon, 5 Sep 2022 10:33:23 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Sep 2022 15:17:16 GMT",
"version": "v2"
},
{
"created": "Sat, 17 Sep 2022 14:02:11 GMT",
"version": "v3"
},
{
"created": "Mon, 7 Nov 2022 19:19:30 GMT",
"version": "v4"
},
{
"cre... | 2023-01-25 | [
[
"Volovik",
"G. E.",
""
]
] | The Painleve-Gullstrand coordinates are extended to describe the black hole in the cosmological environment: the Schwarzschild-de-Sitter black hole, which has two horizons. The extension is made using the Arnowitt-Deser-Misner formalism. In this extension, which describes the metric in the whole range of radial coordin... |
0710.5613 | Dario Zappala | M. Consoli, E. Costanzo | Flat-space picture of gravity vs. General Relativity: a precision test
for present ether-drift experiments | 23 pages, 7 tables, no figures | null | null | null | gr-qc | null | Modern ether-drift experiments in vacuum could in principle detect the tiny
refractive index that, in a flat-space picture of gravity, is appropriate for
an apparatus placed on the Earth's surface. In this picture, in fact, if there
were a preferred reference frame, light on the Earth would exhibit a slight
anisotrop... | [
{
"created": "Tue, 30 Oct 2007 11:29:10 GMT",
"version": "v1"
}
] | 2007-10-31 | [
[
"Consoli",
"M.",
""
],
[
"Costanzo",
"E.",
""
]
] | Modern ether-drift experiments in vacuum could in principle detect the tiny refractive index that, in a flat-space picture of gravity, is appropriate for an apparatus placed on the Earth's surface. In this picture, in fact, if there were a preferred reference frame, light on the Earth would exhibit a slight anisotropy ... |
1906.03624 | Jun Peng | Luca Buoninfante, Anupam Mazumdar, Jun Peng | Nonlocality amplifies echoes | 4 pages + 3 figures | Phys. Rev. D 100, 104059 (2019) | 10.1103/PhysRevD.100.104059 | null | gr-qc cond-mat.other hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we will provide smoking-gun signatures of nonlocal interactions
while studying reflection and transmission of waves bouncing through two Dirac
delta potentials. In particular, we will show that the transmission of waves is
less damped compared to the local case, due to the fact that nonlocality
weakens ... | [
{
"created": "Sun, 9 Jun 2019 12:11:17 GMT",
"version": "v1"
}
] | 2019-12-04 | [
[
"Buoninfante",
"Luca",
""
],
[
"Mazumdar",
"Anupam",
""
],
[
"Peng",
"Jun",
""
]
] | In this paper we will provide smoking-gun signatures of nonlocal interactions while studying reflection and transmission of waves bouncing through two Dirac delta potentials. In particular, we will show that the transmission of waves is less damped compared to the local case, due to the fact that nonlocality weakens th... |
0810.0447 | Francesco Cianfrani dr | Francesco Cianfrani, Giovanni Montani | Dirac equations in curved space-time versus Papapetrou spinning
particles | 6 pages, 1 figure, accepted for publication in Europhysics Letters | Europhys.Lett.84:30008,2008 | 10.1209/0295-5075/84/30008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find out classical particles, starting from Dirac quantum fields on a
curved space-time, by an eikonal approximation and a localization hypothesis
for amplitudes. We recover the results by Mathisson-Papapetrou, hence
establishing a fundamental correspondence between the coupling of classical and
quantum spinning p... | [
{
"created": "Thu, 2 Oct 2008 15:30:06 GMT",
"version": "v1"
}
] | 2008-12-18 | [
[
"Cianfrani",
"Francesco",
""
],
[
"Montani",
"Giovanni",
""
]
] | We find out classical particles, starting from Dirac quantum fields on a curved space-time, by an eikonal approximation and a localization hypothesis for amplitudes. We recover the results by Mathisson-Papapetrou, hence establishing a fundamental correspondence between the coupling of classical and quantum spinning par... |
1607.06095 | Alan Kostelecky | Cheng-Gang Shao, Yu-Jie Tan, Wen-Hai Tan, Shan-Qing Yang, Jun Luo,
Michael Edmund Tobar, Quentin G. Bailey, J.C. Long, E. Weisman, Rui Xu, Alan
Kostelecky | Combined search for Lorentz violation in short-range gravity | 5 pages two-column REVTeX, accepted for publication in Physical
Review Letters | Phys.Rev.Lett.117:071102,2016 | 10.1103/PhysRevLett.117.071102 | null | gr-qc hep-ex hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Short-range experiments testing the gravitational inverse-square law at the
submillimeter scale offer uniquely sensitive probes of Lorentz invariance. A
combined analysis of results from the short-range gravity experiments
HUST-2015, HUST-2011, IU-2012, and IU-2002 permits the first independent
measurements of the 14... | [
{
"created": "Wed, 20 Jul 2016 20:00:07 GMT",
"version": "v1"
}
] | 2016-11-08 | [
[
"Shao",
"Cheng-Gang",
""
],
[
"Tan",
"Yu-Jie",
""
],
[
"Tan",
"Wen-Hai",
""
],
[
"Yang",
"Shan-Qing",
""
],
[
"Luo",
"Jun",
""
],
[
"Tobar",
"Michael Edmund",
""
],
[
"Bailey",
"Quentin G.",
""
],
[
... | Short-range experiments testing the gravitational inverse-square law at the submillimeter scale offer uniquely sensitive probes of Lorentz invariance. A combined analysis of results from the short-range gravity experiments HUST-2015, HUST-2011, IU-2012, and IU-2002 permits the first independent measurements of the 14 n... |
1810.11816 | Carlo Pagani | Maximilian Becker, Carlo Pagani | Geometric operators in the asymptotic safety scenario for quantum
gravity | 31 pages | Phys. Rev. D 99, 066002 (2019) | 10.1103/PhysRevD.99.066002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider geometric operators, such as the geodesic length and the volume
of hypersurfaces, in the context of the Asymptotic Safety scenario for quantum
gravity. We discuss the role of these operators from the Asymptotic Safety
perspective, and compute their anomalous dimensions within the Einstein-Hilbert
truncati... | [
{
"created": "Sun, 28 Oct 2018 14:11:38 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Apr 2019 08:30:12 GMT",
"version": "v2"
}
] | 2019-04-16 | [
[
"Becker",
"Maximilian",
""
],
[
"Pagani",
"Carlo",
""
]
] | We consider geometric operators, such as the geodesic length and the volume of hypersurfaces, in the context of the Asymptotic Safety scenario for quantum gravity. We discuss the role of these operators from the Asymptotic Safety perspective, and compute their anomalous dimensions within the Einstein-Hilbert truncation... |
1708.04646 | Pablo Anglada | Pablo Anglada | Penrose-like inequality with angular momentum for minimal surfaces | null | Class. Quantum Grav. 35(4), 2018, 045018 | 10.1088/1361-6382/aaa0a6 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In axially symmetric spacetimes the Penrose inequality can be strengthened to
include angular momentum. We prove a version of this inequality for minimal
surfaces, more precisely, a lower bound for the ADM mass in terms of the area
of a minimal surface, the angular momentum and a particular measure of the
surface siz... | [
{
"created": "Tue, 15 Aug 2017 18:55:16 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jan 2018 12:33:50 GMT",
"version": "v2"
}
] | 2018-01-26 | [
[
"Anglada",
"Pablo",
""
]
] | In axially symmetric spacetimes the Penrose inequality can be strengthened to include angular momentum. We prove a version of this inequality for minimal surfaces, more precisely, a lower bound for the ADM mass in terms of the area of a minimal surface, the angular momentum and a particular measure of the surface size.... |
1109.2804 | Sijie Gao | Sijie Gao | A general maximum entropy principle for self-gravitating perfect fluid | 13 pages, no figure. The arguments have been improved so that the
assumption p=p(\rho) is no longer needed | Phys.Rev.D 84, 104023 (2011); Phys. Rev. D 85, 027503 (2012) | 10.1103/PhysRevD.84.104023 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a self-gravitating system consisting of perfect fluid with
spherical symmetry. Using the general expression of entropy density, we
extremize the total entropy $S$ under the constraint that the total number of
particles is fixed. We show that extrema of $S$ coincides precisely with the
relativistic Tolman-... | [
{
"created": "Tue, 13 Sep 2011 14:42:50 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Oct 2011 05:09:30 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Jan 2012 11:10:47 GMT",
"version": "v3"
}
] | 2015-05-30 | [
[
"Gao",
"Sijie",
""
]
] | We consider a self-gravitating system consisting of perfect fluid with spherical symmetry. Using the general expression of entropy density, we extremize the total entropy $S$ under the constraint that the total number of particles is fixed. We show that extrema of $S$ coincides precisely with the relativistic Tolman-Op... |
1809.03579 | Behnam Pourhassan | Sudhaker Upadhyay, Behnam Pourhassan, and Salvatore Capozziello | Thermodynamics and phase transitions of galactic clustering in
higher-order Modified Gravity | Accepted for publication in IJMPD | Int. J. Mod. Phys. D 28 (2019) 1950027 | 10.1142/S0218271819500275 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the thermodynamics of galactic clustering under the higher-order
corrected Newtonian dynamics. The clustering of galaxies is considered as a
gravitational phase transition. In order to study the effects of higher-order
correction to the thermodynamics of gravitational system, we compute more exact
equations ... | [
{
"created": "Tue, 11 Sep 2018 06:04:57 GMT",
"version": "v1"
}
] | 2019-01-23 | [
[
"Upadhyay",
"Sudhaker",
""
],
[
"Pourhassan",
"Behnam",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | We study the thermodynamics of galactic clustering under the higher-order corrected Newtonian dynamics. The clustering of galaxies is considered as a gravitational phase transition. In order to study the effects of higher-order correction to the thermodynamics of gravitational system, we compute more exact equations of... |
2308.11595 | Mostafa Bousder Dr. | M. Bousder, A.Riadsolh, M El Belkacemi and H. Ez-Zahraouy | Cosmic acceleration in Lovelock quantum gravity | 18 pages, 2 figures | Volume 458, Part 1, November 2023, 169441 | 10.1016/j.aop.2023.169441 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | This paper introduces novel solutions for inflation and late-time cosmic
acceleration within the framework of quantum Lovelock gravity, utilizing
Friedmann equations. Furthermore, we demonstrate the hypergeometric states of
cosmic acceleration through the Schr\"{o}dinger stationary equation. A physical
interpretation... | [
{
"created": "Mon, 21 Aug 2023 12:23:29 GMT",
"version": "v1"
}
] | 2023-08-23 | [
[
"Bousder",
"M.",
""
],
[
"Riadsolh",
"A.",
""
],
[
"Belkacemi",
"M El",
""
],
[
"Ez-Zahraouy",
"H.",
""
]
] | This paper introduces novel solutions for inflation and late-time cosmic acceleration within the framework of quantum Lovelock gravity, utilizing Friedmann equations. Furthermore, we demonstrate the hypergeometric states of cosmic acceleration through the Schr\"{o}dinger stationary equation. A physical interpretation i... |
1512.00032 | Yu Chen | Yu Chen | Gravitational multi-soliton solutions on flat space | 68 pages, 5 figures, LaTeX; v2: published version | Phys. Rev. D 93, 044021 (2016) | 10.1103/PhysRevD.93.044021 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that, for even n, the n-soliton solution on the Minkowski
seed, constructed using the inverse-scattering method (ISM) of Belinski and
Zakharov (BZ), is the multi-Kerr-NUT solution. We show that, for odd n, the
natural seed to use is the Euclidean space with two manifest translational
symmetries, and ... | [
{
"created": "Mon, 30 Nov 2015 21:08:01 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Feb 2016 02:45:59 GMT",
"version": "v2"
}
] | 2016-02-17 | [
[
"Chen",
"Yu",
""
]
] | It is well known that, for even n, the n-soliton solution on the Minkowski seed, constructed using the inverse-scattering method (ISM) of Belinski and Zakharov (BZ), is the multi-Kerr-NUT solution. We show that, for odd n, the natural seed to use is the Euclidean space with two manifest translational symmetries, and th... |
2208.02077 | Lucas Gardai Collodel | Daniela D. Doneva, Lucas G. Collodel and Stoytcho S. Yazadjiev | Spontaneous nonlinear scalarization of Kerr black holes | null | null | 10.1103/PhysRevD.106.104027 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | As it became well known in the past years, Einstein-scalar-Gauss-Bonnet
(EsGB) theories evade no-hair theorems and allow for scalarized compact objects
including black holes (BH). The coupling function that defines the theory is
the main character in the process and nature of scalarization. With the right
choice, the... | [
{
"created": "Wed, 3 Aug 2022 13:57:49 GMT",
"version": "v1"
}
] | 2022-11-23 | [
[
"Doneva",
"Daniela D.",
""
],
[
"Collodel",
"Lucas G.",
""
],
[
"Yazadjiev",
"Stoytcho S.",
""
]
] | As it became well known in the past years, Einstein-scalar-Gauss-Bonnet (EsGB) theories evade no-hair theorems and allow for scalarized compact objects including black holes (BH). The coupling function that defines the theory is the main character in the process and nature of scalarization. With the right choice, the t... |
1803.01817 | Papantonopoulos Eleftherios | Stella Kiorpelidi, Konstantinos Ntrekis and Eleftherios
Papantonopoulos | Superradiance Effect of a Black Hole Immersed in an Expanding Universe | 14 pages, 13 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We studied the superradiance effect of a charge black hole immersed in an
expanding Universe. We considered a test massive charged scalar field scattered
off the horizon of the charge McVittie black hole. We carried out a detailed
analysis of the electric energy extracted from the horizon of McVittie black
hole in tw... | [
{
"created": "Mon, 5 Mar 2018 18:24:28 GMT",
"version": "v1"
}
] | 2018-03-06 | [
[
"Kiorpelidi",
"Stella",
""
],
[
"Ntrekis",
"Konstantinos",
""
],
[
"Papantonopoulos",
"Eleftherios",
""
]
] | We studied the superradiance effect of a charge black hole immersed in an expanding Universe. We considered a test massive charged scalar field scattered off the horizon of the charge McVittie black hole. We carried out a detailed analysis of the electric energy extracted from the horizon of McVittie black hole in two ... |
1507.02394 | Pankaj Jain | Pankaj Jain, Gopal Kashyap and Subhadip Mitra | Non-relativistic matter and Dark energy in a quantum conformal model | 12 pages | Astropart.Phys. 75 (2016) 64-71 | 10.1016/j.astropartphys.2015.11.003 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a generalization of the standard model which respects quantum
conformal invariance. This model leads to identically zero vacuum energy. We
show how non-relativistic matter and dark energy arises in this model. Hence
the model is shown to be consistent with observations.
| [
{
"created": "Thu, 9 Jul 2015 07:13:07 GMT",
"version": "v1"
}
] | 2019-12-09 | [
[
"Jain",
"Pankaj",
""
],
[
"Kashyap",
"Gopal",
""
],
[
"Mitra",
"Subhadip",
""
]
] | We consider a generalization of the standard model which respects quantum conformal invariance. This model leads to identically zero vacuum energy. We show how non-relativistic matter and dark energy arises in this model. Hence the model is shown to be consistent with observations. |
1602.04306 | Sourav Bhattacharya | Sourav Bhattacharya | Rotating Killing horizons in generic $F(R)$ gravity theories | v2, 14pp; added references, discussions and clarifications, improved
presentation; accepted in GRG | Gen Relativ Gravit (2016) 48: 128 | 10.1007/s10714-016-2119-1 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss various properties of rotating Killing horizons in generic $F(R)$
theories of gravity in dimension four for spacetimes endowed with two commuting
Killing vector fields. Assuming there is no curvature singularity anywhere on
or outside the horizon, we construct a suitable $(3+1)$-foliation. We show that
sim... | [
{
"created": "Sat, 13 Feb 2016 08:54:22 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Aug 2016 05:25:29 GMT",
"version": "v2"
}
] | 2016-09-06 | [
[
"Bhattacharya",
"Sourav",
""
]
] | We discuss various properties of rotating Killing horizons in generic $F(R)$ theories of gravity in dimension four for spacetimes endowed with two commuting Killing vector fields. Assuming there is no curvature singularity anywhere on or outside the horizon, we construct a suitable $(3+1)$-foliation. We show that simil... |
1301.1588 | Richard Petti | Richard James Petti | Derivation of Einstein Cartan theory from General Relativity | 44 pages, 1 table, 63 equations, 3 figures, 93 lines of computer
algebra, 37 references, 7 Appendices. This version Adds a post-publication
note the responds to some commentaries about the paper | null | 10.1142/S0219887821500833 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work derives the elements of classical Einstein Cartan theory (EC) from
classical general relativity (GR) in two ways. (I) Derive discrete versions of
torsion (translational holonomy) and the spin torsion field equation of EC from
one Kerr solution in GR. (II) Derive the field equations of EC as the continuum
li... | [
{
"created": "Tue, 8 Jan 2013 16:45:27 GMT",
"version": "v1"
},
{
"created": "Sun, 17 Aug 2014 14:17:08 GMT",
"version": "v10"
},
{
"created": "Tue, 30 Sep 2014 19:16:48 GMT",
"version": "v11"
},
{
"created": "Sat, 18 Oct 2014 22:05:32 GMT",
"version": "v12"
},
{
... | 2022-05-31 | [
[
"Petti",
"Richard James",
""
]
] | This work derives the elements of classical Einstein Cartan theory (EC) from classical general relativity (GR) in two ways. (I) Derive discrete versions of torsion (translational holonomy) and the spin torsion field equation of EC from one Kerr solution in GR. (II) Derive the field equations of EC as the continuum limi... |
1102.4824 | Massimo Tinto | Marcio Eduardo da Silva Alves, Massimo Tinto | Pulsar Timing Sensitivities to Gravitational Waves from Relativistic
Metric Theories of Gravity | 11 pages, 2 figures. Submitted to Phys. Rev. D | null | 10.1103/PhysRevD.83.123529 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Pulsar timing experiments aimed at the detection of gravitational radiation
have been performed for decades now. With the forthcoming construction of large
arrays capable of tracking multiple millisecond pulsars, it is very likely we
will be able to make the first detection of gravitational radiation in the
nano-Hert... | [
{
"created": "Wed, 23 Feb 2011 19:29:00 GMT",
"version": "v1"
}
] | 2015-05-27 | [
[
"Alves",
"Marcio Eduardo da Silva",
""
],
[
"Tinto",
"Massimo",
""
]
] | Pulsar timing experiments aimed at the detection of gravitational radiation have been performed for decades now. With the forthcoming construction of large arrays capable of tracking multiple millisecond pulsars, it is very likely we will be able to make the first detection of gravitational radiation in the nano-Hertz ... |
1107.1540 | Gianluca Calcagni | Martin Bojowald, Gianluca Calcagni, Shinji Tsujikawa | Observational test of inflation in loop quantum cosmology | 1+37 pages, 6 figures, 1 table. v2: minor improvements in the text,
references added | JCAP11(2011)046 | 10.1088/1475-7516/2011/11/046 | AEI-2011-042 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study in detail the power spectra of scalar and tensor perturbations
generated during inflation in loop quantum cosmology (LQC). After clarifying in
a novel quantitative way how inverse-volume corrections arise in inhomogeneous
settings, we show that they can generate large running spectral indices, which
generall... | [
{
"created": "Fri, 8 Jul 2011 00:21:52 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Nov 2011 14:38:39 GMT",
"version": "v2"
}
] | 2015-03-19 | [
[
"Bojowald",
"Martin",
""
],
[
"Calcagni",
"Gianluca",
""
],
[
"Tsujikawa",
"Shinji",
""
]
] | We study in detail the power spectra of scalar and tensor perturbations generated during inflation in loop quantum cosmology (LQC). After clarifying in a novel quantitative way how inverse-volume corrections arise in inhomogeneous settings, we show that they can generate large running spectral indices, which generally ... |
1309.7296 | Luca Maccione | Stefano Liberati (SISSA and INFN, Trieste) and Luca Maccione (LMU and
MPP, Munich) | Astrophysical constraints on Planck scale dissipative phenomena | 5 pages, 1 figure. v2: Minor revisions. Accepted for publication in
Phys. Rev. Lett | Phys. Rev. Lett. 112, 151301 (2014) | 10.1103/PhysRevLett.112.151301 | LMU-ASC 67/13; MPP-2013-272 | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The emergence of a classical spacetime from any quantum gravity model is
still a subtle and only partially understood issue. If indeed spacetime is
arising as some sort of large scale condensate of more fundamental objects then
it is natural to expect that matter, being a collective excitations of the
spacetime const... | [
{
"created": "Fri, 27 Sep 2013 16:56:55 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Mar 2014 17:30:24 GMT",
"version": "v2"
}
] | 2014-04-24 | [
[
"Liberati",
"Stefano",
"",
"SISSA and INFN, Trieste"
],
[
"Maccione",
"Luca",
"",
"LMU and\n MPP, Munich"
]
] | The emergence of a classical spacetime from any quantum gravity model is still a subtle and only partially understood issue. If indeed spacetime is arising as some sort of large scale condensate of more fundamental objects then it is natural to expect that matter, being a collective excitations of the spacetime constit... |
gr-qc/0402055 | Oliver Preuss | S.K. Solanki (1), O.Preuss (1), M.P. Haugan (2), A. Gandorfer (1,3),
H. P. Povel (3), P. Steiner (3), K. Stucki (3), P. N. Bernasconi (4), D.
Soltau (5), ((1) Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau,
Germany; (2) Purdue University, West Lafayette Indiana USA; (3) Institute of
Astronomy, ETH-Zentru... | Solar constraints on new couplings between electromagnetism and gravity | Accepted for publication in Phys.Rev. D | Phys.Rev. D69 (2004) 062001 | 10.1103/PhysRevD.69.062001 | null | gr-qc astro-ph | null | The unification of quantum field theory and general relativity is a
fundamental goal of modern physics. In many cases, theoretical efforts to
achieve this goal introduce auxiliary gravitational fields, ones in addition to
the familiar symmetric second-rank tensor potential of general relativity, and
lead to nonmetric... | [
{
"created": "Thu, 12 Feb 2004 15:24:44 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Solanki",
"S. K.",
""
],
[
"Preuss",
"O.",
""
],
[
"Haugan",
"M. P.",
""
],
[
"Gandorfer",
"A.",
""
],
[
"Povel",
"H. P.",
""
],
[
"Steiner",
"P.",
""
],
[
"Stucki",
"K.",
""
],
[
"Bernasconi",
... | The unification of quantum field theory and general relativity is a fundamental goal of modern physics. In many cases, theoretical efforts to achieve this goal introduce auxiliary gravitational fields, ones in addition to the familiar symmetric second-rank tensor potential of general relativity, and lead to nonmetric t... |
gr-qc/9708022 | Carlos O. Lousto | Carlos O. Lousto and Richard H. Price (Univ. Utah) | Improved initial data for black hole collisions | 10 pages, REVTEX, 14 PS figs | Phys.Rev. D57 (1998) 1073-1083 | 10.1103/PhysRevD.57.1073 | null | gr-qc hep-th | null | Numerical relativity codes now being developed will evolve initial data
representing colliding black holes at a relatively late stage in the collision.
The choice of initial data used for code development has been made on the basis
of mathematical definitiveness and usefulness for computational implementation.
By usi... | [
{
"created": "Mon, 11 Aug 1997 23:10:36 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Lousto",
"Carlos O.",
"",
"Univ. Utah"
],
[
"Price",
"Richard H.",
"",
"Univ. Utah"
]
] | Numerical relativity codes now being developed will evolve initial data representing colliding black holes at a relatively late stage in the collision. The choice of initial data used for code development has been made on the basis of mathematical definitiveness and usefulness for computational implementation. By using... |
gr-qc/0401009 | Deborah A. Konkowski | D.A. Konkowski, T.M. Helliwell and C. Wieland | Quantum singularity of Levi-Civita spacetimes | null | Class.Quant.Grav. 21 (2004) 265-272 | 10.1088/0264-9381/21/1/018 | null | gr-qc | null | Quantum singularities in general relativistic spacetimes are determined by
the behavior of quantum test particles. A static spacetime is quantum
mechanically singular if the spatial portion of the wave operator is not
essentially self-adjoint. Here Weyl's limit point-limit circle criterion is
used to determine whethe... | [
{
"created": "Sun, 4 Jan 2004 00:16:07 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Konkowski",
"D. A.",
""
],
[
"Helliwell",
"T. M.",
""
],
[
"Wieland",
"C.",
""
]
] | Quantum singularities in general relativistic spacetimes are determined by the behavior of quantum test particles. A static spacetime is quantum mechanically singular if the spatial portion of the wave operator is not essentially self-adjoint. Here Weyl's limit point-limit circle criterion is used to determine whether ... |
2312.17563 | ChengGang Shao | Li-Jie Xin, Jun-Qi Guo, Cheng-Gang Shao | Energy transfer in the collision of two scalar wave packets in spherical
symmetry | null | null | 10.1103/PhysRevD.108.124071 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study the collisions of two scalar wave packets in the asymptotically flat
spacetime and asymptotically anti-de Sitter spacetime in spherical symmetry. An
energy transfer formula is obtained, $y=Cm_{i}m_{o}/r$, where $y$ is the
transferred energy in the collisions of the two wave packets, $m_i$ and $m_o$
are the M... | [
{
"created": "Fri, 29 Dec 2023 11:11:40 GMT",
"version": "v1"
}
] | 2024-01-01 | [
[
"Xin",
"Li-Jie",
""
],
[
"Guo",
"Jun-Qi",
""
],
[
"Shao",
"Cheng-Gang",
""
]
] | We study the collisions of two scalar wave packets in the asymptotically flat spacetime and asymptotically anti-de Sitter spacetime in spherical symmetry. An energy transfer formula is obtained, $y=Cm_{i}m_{o}/r$, where $y$ is the transferred energy in the collisions of the two wave packets, $m_i$ and $m_o$ are the Mis... |
1005.2922 | Nicholas Taylor | Nicholas W. Taylor, Lawrence E. Kidder, Saul A. Teukolsky | Spectral methods for the wave equation in second-order form | 16 pages, 5 figures | Phys.Rev.D82:024037,2010 | 10.1103/PhysRevD.82.024037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Current spectral simulations of Einstein's equations require writing the
equations in first-order form, potentially introducing instabilities and
inefficiencies. We present a new penalty method for pseudo-spectral evolutions
of second order in space wave equations. The penalties are constructed as
functions of Legend... | [
{
"created": "Mon, 17 May 2010 13:47:07 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Taylor",
"Nicholas W.",
""
],
[
"Kidder",
"Lawrence E.",
""
],
[
"Teukolsky",
"Saul A.",
""
]
] | Current spectral simulations of Einstein's equations require writing the equations in first-order form, potentially introducing instabilities and inefficiencies. We present a new penalty method for pseudo-spectral evolutions of second order in space wave equations. The penalties are constructed as functions of Legendre... |
gr-qc/0210087 | Tiberiu Harko | M. K. Mak, T. Harko | Brans-Dicke cosmology with a scalar field potential | 6 pages, 4 figures | Europhys.Lett. 60 (2002) 155-161 | 10.1209/epl/i2002-00664-2 | null | gr-qc | null | Three solutions of the Brans-Dicke theory with a self-interacting quartic
potential and perfect fluid distribution are presented for a spatially flat
geometry. The physical behavior is consistent with the recent cosmological
scenario favored by type Ia supernova observations, indicating an accelerated
expansion of th... | [
{
"created": "Fri, 25 Oct 2002 07:51:59 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Mak",
"M. K.",
""
],
[
"Harko",
"T.",
""
]
] | Three solutions of the Brans-Dicke theory with a self-interacting quartic potential and perfect fluid distribution are presented for a spatially flat geometry. The physical behavior is consistent with the recent cosmological scenario favored by type Ia supernova observations, indicating an accelerated expansion of the ... |
1307.8338 | Walter Del Pozzo | Walter Del Pozzo, Tjonnie G.F. Li, Michalis Agathos, Chris Van Den
Broeck, Salvatore Vitale | Demonstrating the feasibility of probing the neutron star equation of
state with second-generation gravitational wave detectors | 5 pages, 2 figures, accepted for publication on Phys. Rev. Lett | null | 10.1103/PhysRevLett.111.071101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Fisher matrix and related studies have suggested that with second-generation
gravitational wave detectors, it may be possible to infer the equation of state
of neutron stars using tidal effects in binary inspiral. Here we present the
first fully Bayesian investigation of this problem. We simulate a realistic
data ana... | [
{
"created": "Wed, 31 Jul 2013 14:46:12 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Del Pozzo",
"Walter",
""
],
[
"Li",
"Tjonnie G. F.",
""
],
[
"Agathos",
"Michalis",
""
],
[
"Broeck",
"Chris Van Den",
""
],
[
"Vitale",
"Salvatore",
""
]
] | Fisher matrix and related studies have suggested that with second-generation gravitational wave detectors, it may be possible to infer the equation of state of neutron stars using tidal effects in binary inspiral. Here we present the first fully Bayesian investigation of this problem. We simulate a realistic data analy... |
1612.00713 | Lisa Glaser | Lisa Glaser | Scaling behaviour in random non-commutative geometries | 16 pages, 16 figures (v2: updated after review) | J. Phys. A: Math. Theor. 50 275201 (2017) | 10.1088/1751-8121/aa7424 | null | gr-qc hep-lat hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Random non-commutative geometries are a novel approach to taking a
non-perturbative path integral over geometries. They were introduced in
arxiv.org/abs/1510.01377, where a first examination was performed. During this
examination we found that some geometries show indications of a phase
transition. In this article we... | [
{
"created": "Fri, 2 Dec 2016 15:47:21 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jun 2017 11:20:40 GMT",
"version": "v2"
}
] | 2017-06-14 | [
[
"Glaser",
"Lisa",
""
]
] | Random non-commutative geometries are a novel approach to taking a non-perturbative path integral over geometries. They were introduced in arxiv.org/abs/1510.01377, where a first examination was performed. During this examination we found that some geometries show indications of a phase transition. In this article we e... |
1807.05970 | Ian Durham | Ian T. Durham | Global ontologies for relativistic quantum systems and quantum field
theory | Cleaned up sections in response to reviewer comments; added
discussion of Lorentz invariance and determinism; removed section on fermion
doubling; added acknowledgement of funding sources | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | Epistemic models of nature prove to be problematic in many settings,
particularly in those in which measurement procedures are ill-defined. By
contrast, in ontological models of nature, measurement results are independent
of the procedure used to obtain them. Quantum mechanics, as a model of nature,
is notoriously am... | [
{
"created": "Mon, 16 Jul 2018 17:06:51 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Aug 2018 19:27:45 GMT",
"version": "v2"
},
{
"created": "Tue, 4 Dec 2018 22:37:17 GMT",
"version": "v3"
}
] | 2018-12-06 | [
[
"Durham",
"Ian T.",
""
]
] | Epistemic models of nature prove to be problematic in many settings, particularly in those in which measurement procedures are ill-defined. By contrast, in ontological models of nature, measurement results are independent of the procedure used to obtain them. Quantum mechanics, as a model of nature, is notoriously ambi... |
1008.2165 | David Jennings | David Jennings | On the response of a particle detector in Anti-de Sitter spacetime | 13 pages, no figures, accepted for publication in Class. Quantum Grav | Class.Quant.Grav.27:205005,2010 | 10.1088/0264-9381/27/20/205005 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the vacuum response of a particle detector in Anti-de Sitter
spacetime, and in particular analyze how spacetime features such as curvature
and dimensionality affect the response spectrum of an accelerated detector. We
calculate useful limits on Wightman functions, analyze the dynamics of the
detector in t... | [
{
"created": "Thu, 12 Aug 2010 17:19:20 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Jennings",
"David",
""
]
] | We consider the vacuum response of a particle detector in Anti-de Sitter spacetime, and in particular analyze how spacetime features such as curvature and dimensionality affect the response spectrum of an accelerated detector. We calculate useful limits on Wightman functions, analyze the dynamics of the detector in ter... |
1707.03741 | Cristiano Germani | Cristiano Germani and Prado Martin-Moruno | Tracking our Universe to de Sitter by a Horndeski scalar | 14 pages, v2: comment on frames added. Conclusions unchanged, version
accepted for publication in Physics of the Dark Universe | Physics of the Dark Universe 18C (2017) pp. 1-5 | null | ICCUB-17-014 | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Assuming both that our Universe is evolving into a de Sitter space and a
vanishing cosmological constant, leaves only the option that the observed
acceleration is provided by a "kinetic" energy of a scalar field. From an
effective field theory point of view, the absence of Ostrogradsky instabilities
restricts the cho... | [
{
"created": "Wed, 12 Jul 2017 14:37:27 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Sep 2017 13:15:42 GMT",
"version": "v2"
}
] | 2017-09-26 | [
[
"Germani",
"Cristiano",
""
],
[
"Martin-Moruno",
"Prado",
""
]
] | Assuming both that our Universe is evolving into a de Sitter space and a vanishing cosmological constant, leaves only the option that the observed acceleration is provided by a "kinetic" energy of a scalar field. From an effective field theory point of view, the absence of Ostrogradsky instabilities restricts the choic... |
2001.00011 | Pardyumn Kumar Sahoo | Koijam Manihar Singh, Sanjay Mandal, Longjam Parbati Devi, P.K. Sahoo | Dark Energy and Modified Scale Covariant Theory of Gravitation | 12 pages, 12 figures, Accepted version in New Astronomy | New Astron. 77 (2020) 101353 | 10.1016/j.newast.2019.101353 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Taking up four model universes we study the behaviour and contribution of
dark energy to the accelerated expansion of the universe, in the modified scale
covariant theory of gravitation. Here, it is seen that though this modified
theory may be a cause of the accelerated expansion it cannot totally outcast
the contrib... | [
{
"created": "Mon, 30 Dec 2019 08:44:04 GMT",
"version": "v1"
}
] | 2020-01-28 | [
[
"Singh",
"Koijam Manihar",
""
],
[
"Mandal",
"Sanjay",
""
],
[
"Devi",
"Longjam Parbati",
""
],
[
"Sahoo",
"P. K.",
""
]
] | Taking up four model universes we study the behaviour and contribution of dark energy to the accelerated expansion of the universe, in the modified scale covariant theory of gravitation. Here, it is seen that though this modified theory may be a cause of the accelerated expansion it cannot totally outcast the contribut... |
1304.2291 | Giovanni Marozzi Dr. | Giovanni Marozzi, Gian Paolo Vacca | Gauge invariant backreaction in general single field models of inflation | 5 pages, no figures. Minor corrections made and typos corrected.
Version accepted for publication in PRD | Phys. Rev. D 88, 027302 (2013) | 10.1103/PhysRevD.88.027302 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a general single field inflationary model we consider the effects of long
wavelength scalar fluctuations on the effective expansion rate and equation of
state seen by a class of free falling observers, using a physical gauge
invariant formulation. In a previous work we showed that for a free massive
inflaton no ba... | [
{
"created": "Mon, 8 Apr 2013 18:17:56 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jul 2013 16:55:46 GMT",
"version": "v2"
}
] | 2013-08-06 | [
[
"Marozzi",
"Giovanni",
""
],
[
"Vacca",
"Gian Paolo",
""
]
] | In a general single field inflationary model we consider the effects of long wavelength scalar fluctuations on the effective expansion rate and equation of state seen by a class of free falling observers, using a physical gauge invariant formulation. In a previous work we showed that for a free massive inflaton no back... |
2208.14119 | Giulia Gubitosi | Michele Arzano, Vittorio D'Esposito, Giulia Gubitosi | Fundamental decoherence from quantum spacetime | v2 matches the version accepted for publication in Communications
Physics | null | null | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | We show that quantum properties of spacetime, encoded by noncommutativity at
the Planck scale, lead to a generalized time evolution of quantum systems in
which pure states can evolve into mixed states. Specifically, a decoherence
mechanism is obtained in the form of a Lindblad-like time evolution for the
density oper... | [
{
"created": "Tue, 30 Aug 2022 10:06:21 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Jan 2023 18:27:53 GMT",
"version": "v2"
}
] | 2023-01-27 | [
[
"Arzano",
"Michele",
""
],
[
"D'Esposito",
"Vittorio",
""
],
[
"Gubitosi",
"Giulia",
""
]
] | We show that quantum properties of spacetime, encoded by noncommutativity at the Planck scale, lead to a generalized time evolution of quantum systems in which pure states can evolve into mixed states. Specifically, a decoherence mechanism is obtained in the form of a Lindblad-like time evolution for the density operat... |
1703.09811 | Arvin Ravanpak | Arvin Ravanpak, Hossein Farajollahi, Golnaz Farpoor Fadakar | Normal DGP in varying speed of light cosmology | null | Res. Astron. Astrophys., 17 (2017) 26 | 10.1088/1674-4527/17/3/26 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The varying speed of light (VSL) has been used in cosmological models in
which the physical constants vary over time. On the other hand, the Dvali,
Gabadadze and Porrati (DGP) brane world model, especially its normal branch has
been extensively discussed to justify the current cosmic acceleration. In this
article we ... | [
{
"created": "Tue, 28 Mar 2017 21:35:01 GMT",
"version": "v1"
}
] | 2017-04-05 | [
[
"Ravanpak",
"Arvin",
""
],
[
"Farajollahi",
"Hossein",
""
],
[
"Fadakar",
"Golnaz Farpoor",
""
]
] | The varying speed of light (VSL) has been used in cosmological models in which the physical constants vary over time. On the other hand, the Dvali, Gabadadze and Porrati (DGP) brane world model, especially its normal branch has been extensively discussed to justify the current cosmic acceleration. In this article we sh... |
0907.2253 | Luis Herrera | L. Herrera, N.O. Santos | Collapsing Spheres Satisfying An "Euclidean Condition" | 1o pages, Latex. Title changed and text shortened to fit the version
to appear in Gen.Rel.Grav. | Gen.Rel.Grav.42:2383-2391,2010 | 10.1007/s10714-010-0986-4 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the general properties of fluid spheres satisfying the heuristic
assumption that their areas and proper radius are equal (the Euclidean
condition). Dissipative and non-dissipative models are considered. In the
latter case, all models are necessarily geodesic and a subclass of the
Lemaitre-Tolman-Bondi soluti... | [
{
"created": "Mon, 13 Jul 2009 20:11:35 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Apr 2010 09:12:35 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Herrera",
"L.",
""
],
[
"Santos",
"N. O.",
""
]
] | We study the general properties of fluid spheres satisfying the heuristic assumption that their areas and proper radius are equal (the Euclidean condition). Dissipative and non-dissipative models are considered. In the latter case, all models are necessarily geodesic and a subclass of the Lemaitre-Tolman-Bondi solution... |
0809.2916 | M. D. Maia | M. D. Maia, S. S. e Almeida Silva, F. S. Carvalho | Quaternion-Loop Quantum Gravity | 5 pages, latex, no figures. Improved pdf. To appear in the
Foundations of Physics | Found.Phys.39:1273-1279,2009 | 10.1007/s10701-009-9350-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the Riemannian curvature of the 3-dimensional hypersurfaces
in space-time, described by the Wilson loop integral, can be represented by a
quaternion quantum operator induced by the SU(2) gauge potential, thus
providing a justification for quaternion quantum gravity at the Tev energy
scale.
| [
{
"created": "Wed, 17 Sep 2008 12:12:37 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Dec 2008 12:04:04 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Sep 2009 17:39:42 GMT",
"version": "v3"
}
] | 2009-11-05 | [
[
"Maia",
"M. D.",
""
],
[
"Silva",
"S. S. e Almeida",
""
],
[
"Carvalho",
"F. S.",
""
]
] | It is shown that the Riemannian curvature of the 3-dimensional hypersurfaces in space-time, described by the Wilson loop integral, can be represented by a quaternion quantum operator induced by the SU(2) gauge potential, thus providing a justification for quaternion quantum gravity at the Tev energy scale. |
1405.0504 | Scott A. Hughes | Scott A. Hughes | Gravitational wave astronomy and cosmology | 11 pages. Proceedings writeup of a talk given at the 2013 Topics in
Astroparticle and Underground Physics (TAUP) conference | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The first direct observation of gravitational waves' action upon matter has
recently been reported by the BICEP2 experiment. Advanced ground-based
gravitational-wave detectors are being installed. They will soon be
commissioned, and then begin searches for high-frequency gravitational waves at
a sensitivity level tha... | [
{
"created": "Fri, 2 May 2014 20:23:47 GMT",
"version": "v1"
}
] | 2014-05-06 | [
[
"Hughes",
"Scott A.",
""
]
] | The first direct observation of gravitational waves' action upon matter has recently been reported by the BICEP2 experiment. Advanced ground-based gravitational-wave detectors are being installed. They will soon be commissioned, and then begin searches for high-frequency gravitational waves at a sensitivity level that ... |
2406.17018 | Marina De Amicis Ms. | Marina De Amicis, Simone Albanesi, Gregorio Carullo | Inspiral-inherited ringdown tails | 27 pages, 18 figures | null | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the late-time relaxation of a perturbed Schwarzschild black hole,
driven by a source term representing an infalling particle in generic orbits.
We consider quasi-circular and eccentric binaries, dynamical captures and
radial infalls, with orbital dynamics driven by an highly accurate analytical
radiation rea... | [
{
"created": "Mon, 24 Jun 2024 18:00:02 GMT",
"version": "v1"
}
] | 2024-06-26 | [
[
"De Amicis",
"Marina",
""
],
[
"Albanesi",
"Simone",
""
],
[
"Carullo",
"Gregorio",
""
]
] | We study the late-time relaxation of a perturbed Schwarzschild black hole, driven by a source term representing an infalling particle in generic orbits. We consider quasi-circular and eccentric binaries, dynamical captures and radial infalls, with orbital dynamics driven by an highly accurate analytical radiation react... |
1602.02413 | Kent Yagi | Kent Yagi and Leo C. Stein | Black Hole Based Tests of General Relativity | 95 pages, 11 figures; a nomenclature for the braneworld BH conjecture
corrected, references added and updated; Invited review article to the Focus
Issue on "Black holes and fundamental fields" published in Classical and
Quantum Gravity | Class. Quantum Grav. 33 054001 (2016) | 10.1088/0264-9381/33/5/054001 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativity has passed all solar system experiments and neutron star
based tests, such as binary pulsar observations, with flying colors. A more
exotic arena for testing general relativity is in systems that contain one or
more black holes. Black holes are the most compact objects in the universe,
providing pr... | [
{
"created": "Sun, 7 Feb 2016 19:33:09 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Feb 2016 18:36:51 GMT",
"version": "v2"
}
] | 2016-02-19 | [
[
"Yagi",
"Kent",
""
],
[
"Stein",
"Leo C.",
""
]
] | General relativity has passed all solar system experiments and neutron star based tests, such as binary pulsar observations, with flying colors. A more exotic arena for testing general relativity is in systems that contain one or more black holes. Black holes are the most compact objects in the universe, providing prob... |
1609.05129 | Michael Cole | Michael J. Cole, Juan A. Valiente Kroon | A geometric invariant characterising initial data for the Kerr-Newman
spacetime | 34 pages | null | 10.1007/s00023-017-0606-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe the construction of a geometric invariant characterising initial
data for the Kerr-Newman spacetime. This geometric invariant vanishes if and
only if the initial data set corresponds to exact Kerr-Newman initial data, and
so characterises this type of data. We first illustrate the characterisation of
the ... | [
{
"created": "Fri, 16 Sep 2016 16:41:30 GMT",
"version": "v1"
}
] | 2018-03-28 | [
[
"Cole",
"Michael J.",
""
],
[
"Kroon",
"Juan A. Valiente",
""
]
] | We describe the construction of a geometric invariant characterising initial data for the Kerr-Newman spacetime. This geometric invariant vanishes if and only if the initial data set corresponds to exact Kerr-Newman initial data, and so characterises this type of data. We first illustrate the characterisation of the Ke... |
1406.6107 | Soon-Tae Hong | Soon-Tae Hong | Higher dimensional flat embedding of Taub-NUT-AdS spacetime | 8 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a global flat embedding structure of a Taub-NUT-AdS spacetime to
yield a (6+5)-dimensional novel global embedding Minkowski spacetime. We also
investigate Taub-NUT, Schwarzschild-AdS and Schwarzschild limits of the global
embedding by exploiting parameter reduction scheme. In particular, we observe
in th... | [
{
"created": "Mon, 23 Jun 2014 23:27:24 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Feb 2016 07:21:58 GMT",
"version": "v2"
}
] | 2016-02-19 | [
[
"Hong",
"Soon-Tae",
""
]
] | We construct a global flat embedding structure of a Taub-NUT-AdS spacetime to yield a (6+5)-dimensional novel global embedding Minkowski spacetime. We also investigate Taub-NUT, Schwarzschild-AdS and Schwarzschild limits of the global embedding by exploiting parameter reduction scheme. In particular, we observe in the ... |
gr-qc/0504007 | James R. Bogan | James R. Bogan | Induced Matter Theory & Heisenberg-like Uncertainty Relations | null | null | null | null | gr-qc | null | We show that a differential variant of the Heisenberg uncertainty relations
emerges naturally from induced matter theory, as a sum of line elements in both
momentum and Minkowski spaces.
| [
{
"created": "Fri, 1 Apr 2005 23:02:35 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bogan",
"James R.",
""
]
] | We show that a differential variant of the Heisenberg uncertainty relations emerges naturally from induced matter theory, as a sum of line elements in both momentum and Minkowski spaces. |
gr-qc/0302090 | Hanno Sahlmann | Hanno Sahlmann and Thomas Thiemann | On the superselection theory of the Weyl algebra for diffeomorphism
invariant quantum gauge theories | 31 pages, no figures. v2: Instructive second method of proof
supplemented | null | null | AEI-2003-025, PI-2003-001, CGPG-03/2-1, ESI-1284 | gr-qc hep-th math-ph math.MP | null | Much of the work in loop quantum gravity and quantum geometry rests on a
mathematically rigorous integration theory on spaces of distributional
connections. Most notably, a diffeomorphism invariant representation of the
algebra of basic observables of the theory, the Ashtekar-Lewandowski
representation, has been cons... | [
{
"created": "Fri, 21 Feb 2003 20:31:58 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Feb 2003 18:57:50 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Sahlmann",
"Hanno",
""
],
[
"Thiemann",
"Thomas",
""
]
] | Much of the work in loop quantum gravity and quantum geometry rests on a mathematically rigorous integration theory on spaces of distributional connections. Most notably, a diffeomorphism invariant representation of the algebra of basic observables of the theory, the Ashtekar-Lewandowski representation, has been constr... |
1803.08683 | Sabine Hossenfelder | Sabine Hossenfelder, Tobias Mistele | The Redshift-Dependence of Radial Acceleration: Modified Gravity versus
Particle Dark Matter | 7 pages, 4 figures | null | 10.1142/S0218271818470107 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modified Newtonian Dynamics has one free parameter and requires an
interpolation function to recover the normal Newtonian limit. We here show that
this interpolation function is unnecessary in a recently proposed covariant
completion of Erik Verlinde's emergent gravity, and that Verlinde's approach
moreover fixes the... | [
{
"created": "Fri, 23 Mar 2018 08:18:40 GMT",
"version": "v1"
}
] | 2018-11-14 | [
[
"Hossenfelder",
"Sabine",
""
],
[
"Mistele",
"Tobias",
""
]
] | Modified Newtonian Dynamics has one free parameter and requires an interpolation function to recover the normal Newtonian limit. We here show that this interpolation function is unnecessary in a recently proposed covariant completion of Erik Verlinde's emergent gravity, and that Verlinde's approach moreover fixes the f... |
1508.07439 | Yong-Wan Kim | Yong-Wan Kim, Young-Jai Park | Local free-fall Temperature of modified Schwarzschild black hole in
rainbow spacetime | 12 pages, 4 figures, version to appear in MPLA | Mod. Phys. Lett. A, Vol. 31, No. 17 (2016) 1650106 | 10.1142/S0217732316501066 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain a (5+1)-dimensional global flat embedding of modified Schwarzschild
black hole in rainbow gravity. We show that local free-fall temperature in
rainbow gravity, which depends on different energy $\omega$ of a test particle,
is finite at the event horizon for a freely falling observer, while local
temperature... | [
{
"created": "Sat, 29 Aug 2015 11:47:59 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Sep 2015 07:19:41 GMT",
"version": "v2"
},
{
"created": "Tue, 19 Apr 2016 05:27:20 GMT",
"version": "v3"
}
] | 2016-06-06 | [
[
"Kim",
"Yong-Wan",
""
],
[
"Park",
"Young-Jai",
""
]
] | We obtain a (5+1)-dimensional global flat embedding of modified Schwarzschild black hole in rainbow gravity. We show that local free-fall temperature in rainbow gravity, which depends on different energy $\omega$ of a test particle, is finite at the event horizon for a freely falling observer, while local temperature i... |
gr-qc/9811089 | Eric Gourgoulhon | S. Bonazzola, E. Gourgoulhon and J.-A. Marck (DARC, CNRS, Observatoire
de Paris) | Spectral methods in general relativistic astrophysics | 51 pages, elsart (Elsevier Preprint), 19 PostScript figures,
submitted to Journal of Computational & Applied Mathematics | J.Comput.Appl.Math. 109 (1999) 433 | null | null | gr-qc astro-ph physics.comp-ph | null | We present spectral methods developed in our group to solve three-dimensional
partial differential equations. The emphasis is put on equations arising from
astrophysical problems in the framework of general relativity.
| [
{
"created": "Thu, 26 Nov 1998 16:27:13 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bonazzola",
"S.",
"",
"DARC, CNRS, Observatoire\n de Paris"
],
[
"Gourgoulhon",
"E.",
"",
"DARC, CNRS, Observatoire\n de Paris"
],
[
"Marck",
"J. -A.",
"",
"DARC, CNRS, Observatoire\n de Paris"
]
] | We present spectral methods developed in our group to solve three-dimensional partial differential equations. The emphasis is put on equations arising from astrophysical problems in the framework of general relativity. |
gr-qc/9804054 | Eric Gourgoulhon | Eric Gourgoulhon (DARC, CNRS, Observatoire de Paris, France) | Relations between three formalisms for irrotational binary neutron stars
in general relativity | 5 pages, REVTeX, submitted as a brief report to Physical Review D | null | null | null | gr-qc astro-ph | null | Various formalisms proposed recently for irrotational binary systems in
general relativity are compared and explicit relations between them are
exhibited. It is notably shown that the formalisms of (i) Teukolsky, (ii)
Shibata and (iii) Bonazzola et al. (as corrected by Asada) are equivalent, i.e.
yield exactly the sa... | [
{
"created": "Wed, 22 Apr 1998 14:31:23 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gourgoulhon",
"Eric",
"",
"DARC, CNRS, Observatoire de Paris, France"
]
] | Various formalisms proposed recently for irrotational binary systems in general relativity are compared and explicit relations between them are exhibited. It is notably shown that the formalisms of (i) Teukolsky, (ii) Shibata and (iii) Bonazzola et al. (as corrected by Asada) are equivalent, i.e. yield exactly the same... |
2203.05398 | Gabriele Barca | Gabriele Barca, Eleonora Giovannetti and Giovanni Montani | PQM and the GUP: Implications of Lattice Dynamics and Minimal
Uncertainties in Quantum Mechanics and Cosmology | Contribution to the 2022 Gravitation session of the 56th Rencontres
de Moriond. Proceedings available at https://doi.org/10.58027/1e1n-7973 | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compare two alternative representations of quantum mechanics: Polymer
Quantum Mechanics (PQM), which presents features similar to Loop Quantum
Gravity and Loop Quantum Cosmology, and the Generalized Uncertainty Principle
(GUP) representation, that through a modified Algebra yields an alternative
uncertainty princi... | [
{
"created": "Thu, 10 Mar 2022 14:42:04 GMT",
"version": "v1"
}
] | 2023-05-01 | [
[
"Barca",
"Gabriele",
""
],
[
"Giovannetti",
"Eleonora",
""
],
[
"Montani",
"Giovanni",
""
]
] | We compare two alternative representations of quantum mechanics: Polymer Quantum Mechanics (PQM), which presents features similar to Loop Quantum Gravity and Loop Quantum Cosmology, and the Generalized Uncertainty Principle (GUP) representation, that through a modified Algebra yields an alternative uncertainty principl... |
1307.6694 | Salvatore Capozziello | Michael Tsamparlis, Andronikos Paliathanasis, Spyros Basilakos, and
Salvatore Capozziello | Conformally related metrics and Lagrangians and their physical
interpretation in cosmology | 13 pages, to appear in Gen. Rel. Grav | null | 10.1007/s10714-013-1575-0 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Conformally related metrics and Lagrangians are considered in the context of
scalar-tensor gravity cosmology. After the discussion of the problem, we pose a
lemma in which we show that the field equations of two conformally related
Lagrangians are also conformally related if and only if the corresponding
Hamiltonian ... | [
{
"created": "Thu, 25 Jul 2013 10:52:46 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Tsamparlis",
"Michael",
""
],
[
"Paliathanasis",
"Andronikos",
""
],
[
"Basilakos",
"Spyros",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | Conformally related metrics and Lagrangians are considered in the context of scalar-tensor gravity cosmology. After the discussion of the problem, we pose a lemma in which we show that the field equations of two conformally related Lagrangians are also conformally related if and only if the corresponding Hamiltonian va... |
0908.2074 | Ilya Gurwich | Ilya Gurwich and Aharon Davidson | Artifact Dark Matter from Unified Brane Gravity | 6 pages, no figures. Prepared for Identification of dark matter 2008,
Stockholm, Sweden, August 18-22, 2008 | PoS IDM2008:094,2008 | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Adopting Dirac's brane variation prescription, the energy-momentum tensor of
a brane gets supplemented by a geometrical (embedding originated) dark
component. While the masslessness of the graviton is preserved, and the Newton
force law is recovered, the corresponding Newton constant is necessarily lower
than the one... | [
{
"created": "Fri, 14 Aug 2009 14:30:06 GMT",
"version": "v1"
}
] | 2010-02-17 | [
[
"Gurwich",
"Ilya",
""
],
[
"Davidson",
"Aharon",
""
]
] | Adopting Dirac's brane variation prescription, the energy-momentum tensor of a brane gets supplemented by a geometrical (embedding originated) dark component. While the masslessness of the graviton is preserved, and the Newton force law is recovered, the corresponding Newton constant is necessarily lower than the one w... |
1605.01669 | Istvan Racz | Istv\'an R\'acz | A simple method of constructing binary black hole initial data | Substantial simplification of the main argument. Supplemental
material available at http://www.kfki.hu/~iracz/SM-BH-data.pdf | Astronomy Reports, 62(12), 953-958 (2018) | 10.1134/S1063772918120302 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | By applying a parabolic-hyperbolic formulation of the constraints and
superposing Kerr-Schild black holes, a simple method is introduced to
initialize time evolution of binary systems. As the input parameters are
essentially the same as those used in the post-Newtonian (PN) setup the
proposed method interrelates vari... | [
{
"created": "Thu, 5 May 2016 17:48:00 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Aug 2016 16:38:16 GMT",
"version": "v2"
},
{
"created": "Fri, 26 Aug 2016 15:09:21 GMT",
"version": "v3"
},
{
"created": "Fri, 6 Jan 2017 12:48:13 GMT",
"version": "v4"
}
] | 2019-01-07 | [
[
"Rácz",
"István",
""
]
] | By applying a parabolic-hyperbolic formulation of the constraints and superposing Kerr-Schild black holes, a simple method is introduced to initialize time evolution of binary systems. As the input parameters are essentially the same as those used in the post-Newtonian (PN) setup the proposed method interrelates variou... |
2310.19722 | Robert Seeger | Hanno Sahlmann and Robert Seeger | Revisiting loop quantum gravity with selfdual variables: Hilbert space
and first reality condition | 29 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the quantization of gravity as an SL(2,C) gauge theory in terms
of Ashtekar's selfdual variables and reality conditions for the spatial metric
(RCI) and its evolution (RCII). We start from a holomorphic phase space
formulation. It is then natural to push for a quantization in terms of
holomorphic wave fun... | [
{
"created": "Mon, 30 Oct 2023 16:50:16 GMT",
"version": "v1"
}
] | 2023-10-31 | [
[
"Sahlmann",
"Hanno",
""
],
[
"Seeger",
"Robert",
""
]
] | We consider the quantization of gravity as an SL(2,C) gauge theory in terms of Ashtekar's selfdual variables and reality conditions for the spatial metric (RCI) and its evolution (RCII). We start from a holomorphic phase space formulation. It is then natural to push for a quantization in terms of holomorphic wave funct... |
gr-qc/0203009 | Sawa Manoff | Sawa Manoff | Local criteria for the existence of an accelerated frame of reference | 6 pages, LaTeX | null | null | null | gr-qc | null | A local criteria for the existence of an accelerated frame of reference is
found. An accelerated frame of reference could exist in all regions where a
non-null (non-isotropic) vector field does not degenerate in a null (isotropic)
vector field.
| [
{
"created": "Mon, 4 Mar 2002 08:46:06 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Manoff",
"Sawa",
""
]
] | A local criteria for the existence of an accelerated frame of reference is found. An accelerated frame of reference could exist in all regions where a non-null (non-isotropic) vector field does not degenerate in a null (isotropic) vector field. |
2107.12875 | Edgar Gasperin | Edgar Gasperin and Juan A. Valiente Kroon | Staticity and regularity for zero rest-mass fields near spatial infinity
on flat spacetime | 21 pages | null | 10.1088/1361-6382/ac37ce | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Linear zero-rest-mass fields generically develop logarithmic singularities at
the critical sets where spatial infinity meets null infinity. Friedrich's
representation of spatial infinity is ideally suited to study this phenomenon.
These logarithmic singularities are an obstruction to the smoothness of the
zero-rest-m... | [
{
"created": "Tue, 27 Jul 2021 15:17:50 GMT",
"version": "v1"
}
] | 2021-12-22 | [
[
"Gasperin",
"Edgar",
""
],
[
"Kroon",
"Juan A. Valiente",
""
]
] | Linear zero-rest-mass fields generically develop logarithmic singularities at the critical sets where spatial infinity meets null infinity. Friedrich's representation of spatial infinity is ideally suited to study this phenomenon. These logarithmic singularities are an obstruction to the smoothness of the zero-rest-mas... |
0707.0042 | Karthik Shankar | Karthik Shankar and Bernard F. Whiting | Self force of a static electric charge near a Schwarzschild Star | 11 pages, 2 figures | Phys.Rev.D76:124027,2007 | 10.1103/PhysRevD.76.124027 | null | gr-qc | null | When a charge is held static near a constant density spherical star, it
experiences a self-force which is significantly different from the force it
would experience when placed near a black hole of the same mass. In this paper,
an expression for the self-force (as measured by a locally inertial observer)
is given %ex... | [
{
"created": "Sat, 30 Jun 2007 04:38:30 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Nov 2007 12:57:22 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Shankar",
"Karthik",
""
],
[
"Whiting",
"Bernard F.",
""
]
] | When a charge is held static near a constant density spherical star, it experiences a self-force which is significantly different from the force it would experience when placed near a black hole of the same mass. In this paper, an expression for the self-force (as measured by a locally inertial observer) is given %expl... |
1912.07401 | I. V. Kanatchikov | I.V. Kanatchikov | On the precanonical structure of the Schr\"odinger wave functional in
curved space-time | 8 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The functional Schr\"odinger equation in curved space-time is derived from
the manifestly covariant precanonical Schr\"odinger equation. The Schr\"odinger
wave functional is expressed as the trace of the multidimensional product
integral of precanonical wave function restricted to a field configuration. The
functiona... | [
{
"created": "Mon, 16 Dec 2019 14:27:44 GMT",
"version": "v1"
}
] | 2019-12-17 | [
[
"Kanatchikov",
"I. V.",
""
]
] | The functional Schr\"odinger equation in curved space-time is derived from the manifestly covariant precanonical Schr\"odinger equation. The Schr\"odinger wave functional is expressed as the trace of the multidimensional product integral of precanonical wave function restricted to a field configuration. The functional ... |
1703.04426 | Pac\^ome Delva Dr. | P. Delva, J. Lodewyck, S. Bilicki, E. Bookjans, G. Vallet, R. Le
Targat, P.-E. Pottie, C. Guerlin, F. Meynadier, C. Le Poncin-Lafitte, O.
Lopez, A. Amy-Klein, W.-K. Lee, N. Quintin, C. Lisdat, A. Al-Masoudi, S.
D\"orscher, C. Grebing, G. Grosche, A. Kuhl, S. Raupach, U. Sterr, I. R.
Hill, R. Hobson, W. Bowden, ... | Test of special relativity using a fiber network of optical clocks | 6 pages, 3 figures, published in Phys. Rev. L | Phys. Rev. Lett. 118, 221102 (2017) | 10.1103/PhysRevLett.118.221102 | null | gr-qc physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Phase compensated optical fiber links enable high accuracy atomic clocks
separated by thousands of kilometers to be compared with unprecedented
statistical resolution. By searching for a daily variation of the frequency
difference between four strontium optical lattice clocks in different locations
throughout Europe ... | [
{
"created": "Mon, 13 Mar 2017 14:54:02 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Jun 2017 12:33:02 GMT",
"version": "v2"
}
] | 2017-06-13 | [
[
"Delva",
"P.",
""
],
[
"Lodewyck",
"J.",
""
],
[
"Bilicki",
"S.",
""
],
[
"Bookjans",
"E.",
""
],
[
"Vallet",
"G.",
""
],
[
"Targat",
"R. Le",
""
],
[
"Pottie",
"P. -E.",
""
],
[
"Guerlin",
"C."... | Phase compensated optical fiber links enable high accuracy atomic clocks separated by thousands of kilometers to be compared with unprecedented statistical resolution. By searching for a daily variation of the frequency difference between four strontium optical lattice clocks in different locations throughout Europe co... |
2012.11209 | Sebastian Murk | Sebastian Murk, Daniel R. Terno | Spherically symmetric black holes in metric gravity | 13 pages. Published version. Comments welcome! | Phys. Rev. D 104, 064048 (2021) | 10.1103/PhysRevD.104.064048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of black holes is one of the key predictions of general
relativity (GR) and therefore a basic consistency test for modified theories of
gravity. In the case of spherical symmetry in GR the existence of an apparent
horizon and its regularity is consistent with only two distinct classes of
physical black ... | [
{
"created": "Mon, 21 Dec 2020 09:44:02 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Feb 2021 05:30:05 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Sep 2021 09:45:14 GMT",
"version": "v3"
}
] | 2021-09-22 | [
[
"Murk",
"Sebastian",
""
],
[
"Terno",
"Daniel R.",
""
]
] | The existence of black holes is one of the key predictions of general relativity (GR) and therefore a basic consistency test for modified theories of gravity. In the case of spherical symmetry in GR the existence of an apparent horizon and its regularity is consistent with only two distinct classes of physical black ho... |
2208.12849 | Christopher Berry | J. Glanzer, S. Banagiri, S. B. Coughlin, S. Soni, M. Zevin, C. P. L.
Berry, O. Patane, S. Bahaadini, N. Rohani, K. Crowston, V. Kalogera, C.
{\O}sterlund and A. Katsaggelos | Data quality up to the third observing run of Advanced LIGO: Gravity Spy
glitch classifications | 33 pages (including bibliography), 11 figures, 3 tables, 1 appendix;
updated to match version to be published in Classical & Quantum Gravity; data
release available from https://doi.org/10.5281/zenodo.5649211 | Classical & Quantum Gravity; 40(6):065004(28); 2023 | 10.1088/1361-6382/acb633 | LIGO-P2200238 | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | Understanding the noise in gravitational-wave detectors is central to
detecting and interpreting gravitational-wave signals. Glitches are transient,
non-Gaussian noise features that can have a range of environmental and
instrumental origins. The Gravity Spy project uses a machine-learning algorithm
to classify glitch... | [
{
"created": "Fri, 26 Aug 2022 19:24:19 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Feb 2023 11:13:36 GMT",
"version": "v2"
}
] | 2023-02-23 | [
[
"Glanzer",
"J.",
""
],
[
"Banagiri",
"S.",
""
],
[
"Coughlin",
"S. B.",
""
],
[
"Soni",
"S.",
""
],
[
"Zevin",
"M.",
""
],
[
"Berry",
"C. P. L.",
""
],
[
"Patane",
"O.",
""
],
[
"Bahaadini",
"S.... | Understanding the noise in gravitational-wave detectors is central to detecting and interpreting gravitational-wave signals. Glitches are transient, non-Gaussian noise features that can have a range of environmental and instrumental origins. The Gravity Spy project uses a machine-learning algorithm to classify glitches... |
1809.00785 | Ernesto Contreras | E. Contreras and P. Bargue\~no | Scale--dependent Hayward black hole and the generalized uncertainty
principle | 5 pages. References added. Accepted in Mod. Phys. Lett. A | Modern Physics Letters A Vol. 33, No. 32 (2018) 1850184 | 10.1142/S0217732318501845 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we present a technique to obtain bounds on the generalized
uncertainty principle deformation parameter by using an improved Schwarzschild
solution represented by the Hayward metric in the context of scale--dependent
gravity. Specifically, this deformation parameter can be interpreted in terms
of a runnin... | [
{
"created": "Tue, 4 Sep 2018 03:32:00 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Sep 2018 00:36:42 GMT",
"version": "v2"
}
] | 2018-10-01 | [
[
"Contreras",
"E.",
""
],
[
"Bargueño",
"P.",
""
]
] | In this work we present a technique to obtain bounds on the generalized uncertainty principle deformation parameter by using an improved Schwarzschild solution represented by the Hayward metric in the context of scale--dependent gravity. Specifically, this deformation parameter can be interpreted in terms of a running ... |
gr-qc/0212100 | Victor Berezin | Victor Berezin (Inst. Nucl. Res. Russ. Acad. Sci., Moscow) | What can we learn studying quantum black holes? | 65 pp.,11 Figs. To be published in Int.Journ.Mod.Phys.A as a review
article | null | null | null | gr-qc | null | In this paper we try to answer the main question: what is a quantum black
hole?
| [
{
"created": "Tue, 24 Dec 2002 12:31:51 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Berezin",
"Victor",
"",
"Inst. Nucl. Res. Russ. Acad. Sci., Moscow"
]
] | In this paper we try to answer the main question: what is a quantum black hole? |
1206.6559 | Seth Lloyd | Seth Lloyd | The quantum geometric limit | 13 pages, LaTeX. This version updated with figures. arXiv admin note:
substantial text overlap with arXiv:quant-ph/0505064 | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Einstein's gedankenexperiment for measuring space and time, an ensemble of
clocks moving through curved spacetime measures geometry by sending signals
back and forth, as in the global positioning system (GPS). Combining well-known
quantum limits to measurement with the requirement that the energy density of
clocks... | [
{
"created": "Thu, 28 Jun 2012 03:53:03 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Jun 2012 16:10:02 GMT",
"version": "v2"
},
{
"created": "Thu, 26 Jul 2012 22:05:23 GMT",
"version": "v3"
},
{
"created": "Wed, 17 Oct 2012 19:42:26 GMT",
"version": "v4"
}
] | 2012-10-18 | [
[
"Lloyd",
"Seth",
""
]
] | In Einstein's gedankenexperiment for measuring space and time, an ensemble of clocks moving through curved spacetime measures geometry by sending signals back and forth, as in the global positioning system (GPS). Combining well-known quantum limits to measurement with the requirement that the energy density of clocks a... |
0805.2811 | Francesco Cianfrani dr | F. Cianfrani, G. Montani | The role of the time gauge in the 2nd order formalism | 4 pages, Proceedings of the II Stueckelberg Workshop | Int.J.Mod.Phys.A23:1214-1217,2008 | 10.1142/S0217751X08040081 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a canonical quantization of gravity in a second-order formulation,
taking as configuration variables those describing a 4-bein, not adapted to the
space-time splitting. We outline how, neither if we fix the Lorentz frame
before quantizing, nor if we perform no gauge fixing at all, is invariance
under boost... | [
{
"created": "Mon, 19 May 2008 08:22:38 GMT",
"version": "v1"
}
] | 2014-11-18 | [
[
"Cianfrani",
"F.",
""
],
[
"Montani",
"G.",
""
]
] | We perform a canonical quantization of gravity in a second-order formulation, taking as configuration variables those describing a 4-bein, not adapted to the space-time splitting. We outline how, neither if we fix the Lorentz frame before quantizing, nor if we perform no gauge fixing at all, is invariance under boost t... |
gr-qc/0405144 | Christodoulakis Theodosios | T. Christodoulakis, G.O. Papadopoulos | Space Time Covariance of Canonical Quantization of Gravity: A (formal)
general result and the (rigorous) explicit case of 2+1 Quantum Cosmology | 28 pages, LaTeX2e | null | null | null | gr-qc | null | A general classical theorem is presented according to which all invariant
relations among the space time metric scalars, when turned into functions on
the Phase Space of full Pure Gravity (using the Canonical Equations of motion),
become weakly vanishing functions of the Quadratic and Linear Constraints. The
implicat... | [
{
"created": "Sat, 29 May 2004 11:55:21 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Jul 2005 12:14:31 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Christodoulakis",
"T.",
""
],
[
"Papadopoulos",
"G. O.",
""
]
] | A general classical theorem is presented according to which all invariant relations among the space time metric scalars, when turned into functions on the Phase Space of full Pure Gravity (using the Canonical Equations of motion), become weakly vanishing functions of the Quadratic and Linear Constraints. The implicatio... |
0709.2743 | Hyung Won Lee | Kyoung Yee Kim, Hyung Won Lee and Yun Soo Myung | Instability of agegraphic dark energy models | 15 pages 4 figures | Phys.Lett.B660:118-124,2008 | 10.1016/j.physletb.2007.12.045 | INJE-TP-07-09 | gr-qc | null | We investigate the agegraphic dark energy models which were recently proposed
to explain the dark energy-dominated universe. For this purpose, we calculate
their equation of states and squared speeds of sound. We find that the squared
speed for agegraphic dark energy is always negative. This means that the
perfect fl... | [
{
"created": "Tue, 18 Sep 2007 03:14:56 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kim",
"Kyoung Yee",
""
],
[
"Lee",
"Hyung Won",
""
],
[
"Myung",
"Yun Soo",
""
]
] | We investigate the agegraphic dark energy models which were recently proposed to explain the dark energy-dominated universe. For this purpose, we calculate their equation of states and squared speeds of sound. We find that the squared speed for agegraphic dark energy is always negative. This means that the perfect flui... |
1607.06159 | Friedrich W. Hehl | Friedrich W. Hehl (Cologne), Yakov Itin (Jerusalem), Yuri N. Obukhov
(Moscow) | On Kottler's path: origin and evolution of the premetric program in
gravity and in electrodynamics | 72 pages latex with 6 figures; based on an invited talk given at the
Annual Meeting of the German Physical Society (DPG) in Berlin on 20 March
2015, Working Group on Philosophy of Physics (AGPhil); a short version will
be submitted to IJMPD | null | 10.1142/S0218271816400162 | null | gr-qc hep-th physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In 1922, Kottler put forward the program to remove the gravitational
potential, the metric of spacetime, from the fundamental equations in physics
as far as possible. He successfully applied this idea to Newton's
gravitostatics and to Maxwell's electrodynamics, where Kottler recast the field
equations in premetric fo... | [
{
"created": "Thu, 21 Jul 2016 00:14:35 GMT",
"version": "v1"
}
] | 2016-11-09 | [
[
"Hehl",
"Friedrich W.",
"",
"Cologne"
],
[
"Itin",
"Yakov",
"",
"Jerusalem"
],
[
"Obukhov",
"Yuri N.",
"",
"Moscow"
]
] | In 1922, Kottler put forward the program to remove the gravitational potential, the metric of spacetime, from the fundamental equations in physics as far as possible. He successfully applied this idea to Newton's gravitostatics and to Maxwell's electrodynamics, where Kottler recast the field equations in premetric form... |
1009.3897 | Swastik Bhattacharya | Swastik Bhattacharya and Pankaj S. Joshi | Trapped surfaces and horizons in static massless scalar field spacetimes | Revtex, 6 pages, No figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider here the existence and structure of trapped surfaces, horizons
and singularities in spherically symmetric static massless scalar field
spacetimes. Earlier studies have shown that there exists no event horizon in
such spacetimes if the scalar field is asymptotically flat. We extend this
result here to show... | [
{
"created": "Mon, 20 Sep 2010 17:36:29 GMT",
"version": "v1"
}
] | 2010-09-21 | [
[
"Bhattacharya",
"Swastik",
""
],
[
"Joshi",
"Pankaj S.",
""
]
] | We consider here the existence and structure of trapped surfaces, horizons and singularities in spherically symmetric static massless scalar field spacetimes. Earlier studies have shown that there exists no event horizon in such spacetimes if the scalar field is asymptotically flat. We extend this result here to show t... |
0805.0208 | Alok Laddha | Alok Laddha, Madhavan Varadarajan | Polymer Parametrised Field Theory | 44 pages, no figures | Phys.Rev.D78:044008,2008 | 10.1103/PhysRevD.78.044008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Free scalar field theory on 2 dimensional flat spacetime, cast in
diffeomorphism invariant guise by treating the inertial coordinates of the
spacetime as dynamical variables, is quantized using LQG type `polymer'
representations for the matter field and the inertial variables. The quantum
constraints are solved via g... | [
{
"created": "Fri, 2 May 2008 11:03:50 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Laddha",
"Alok",
""
],
[
"Varadarajan",
"Madhavan",
""
]
] | Free scalar field theory on 2 dimensional flat spacetime, cast in diffeomorphism invariant guise by treating the inertial coordinates of the spacetime as dynamical variables, is quantized using LQG type `polymer' representations for the matter field and the inertial variables. The quantum constraints are solved via gro... |
1405.5455 | Yaser Tavakoli | Yaser Tavakoli | Astrophysical and cosmological doomsdays | PhD thesis 2013 (148 pages). It contains material first presented in
arXiv:1105.0445, arXiv:1303.6157, arXiv:1308.4953 and arXiv:0911.1428
[gr-qc]. arXiv admin note: text overlap with arXiv:gr-qc/0301045,
arXiv:gr-qc/0506129, arXiv:gr-qc/0702144 by other authors | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this dissertation we study two well known gravitational scenarios in which
singularities may appear; the final state of gravitational collapse and the
late time evolution of the universe. In the first scenario, we study a
spherically symmetric space-time whose matter content includes a tachyon scalar
field and a b... | [
{
"created": "Wed, 21 May 2014 15:25:16 GMT",
"version": "v1"
}
] | 2014-05-22 | [
[
"Tavakoli",
"Yaser",
""
]
] | In this dissertation we study two well known gravitational scenarios in which singularities may appear; the final state of gravitational collapse and the late time evolution of the universe. In the first scenario, we study a spherically symmetric space-time whose matter content includes a tachyon scalar field and a bar... |
2111.04161 | Marcelo J. Reboucas | N.A. Lemos, M.J. Reboucas | Orientability of space from electromagnetic quantum fluctuations | 11 pages, 2 figures, to appear in the Proceedings of the 16th Marcell
Grossman Meeting | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Whether the space where we live is a globally orientable manifold $M_3$, and
whether the local laws of physics require that $M_3$ be equipped with a
canonical orientation, are among the unsettled questions in cosmology and
quantum field theory. It is often assumed that a test for spatial orientability
requires a glob... | [
{
"created": "Sun, 7 Nov 2021 19:37:55 GMT",
"version": "v1"
}
] | 2021-11-09 | [
[
"Lemos",
"N. A.",
""
],
[
"Reboucas",
"M. J.",
""
]
] | Whether the space where we live is a globally orientable manifold $M_3$, and whether the local laws of physics require that $M_3$ be equipped with a canonical orientation, are among the unsettled questions in cosmology and quantum field theory. It is often assumed that a test for spatial orientability requires a global... |
1311.3263 | Murli Manohar Verma | Murli Manohar Verma and Shankar Dayal Pathak | Cosmic expansion driven by real scalar field for different forms of
potential | 5 pages, no figures | Astrophys. Space Sci., 350, (2014),381 | 10.1007/s10509-013-1736-3 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the expansion of the universe in the FRLW model assuming that the
source of dark energy is either tachyonic scalar field or quintessence. The
tachyonic scalar field with exponential and power-law potential (function of
homogeneous scalar field $\phi$) both gives exponential expansion of the
universe. It is... | [
{
"created": "Tue, 12 Nov 2013 20:27:56 GMT",
"version": "v1"
}
] | 2015-08-11 | [
[
"Verma",
"Murli Manohar",
""
],
[
"Pathak",
"Shankar Dayal",
""
]
] | We discuss the expansion of the universe in the FRLW model assuming that the source of dark energy is either tachyonic scalar field or quintessence. The tachyonic scalar field with exponential and power-law potential (function of homogeneous scalar field $\phi$) both gives exponential expansion of the universe. It is f... |
1902.04781 | Chiranjeeb Singha | Golam Mortuza Hossain, Chiranjeeb Singha | New coordinates for a simpler canonical derivation of the Hawking effect | 6 pages, 1 figure, revtex4 | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In order to achieve a Hamiltonian-based canonical derivation of the Hawking
effect, one usually faces multiple hurdles. Firstly, the spacetime foliation
using Schwarzschild time does not lead to hyper-surfaces which are always
spacelike. Secondly, the null coordinates which are frequently used in
covariant approach, ... | [
{
"created": "Wed, 13 Feb 2019 08:28:32 GMT",
"version": "v1"
}
] | 2019-02-14 | [
[
"Hossain",
"Golam Mortuza",
""
],
[
"Singha",
"Chiranjeeb",
""
]
] | In order to achieve a Hamiltonian-based canonical derivation of the Hawking effect, one usually faces multiple hurdles. Firstly, the spacetime foliation using Schwarzschild time does not lead to hyper-surfaces which are always spacelike. Secondly, the null coordinates which are frequently used in covariant approach, do... |
gr-qc/9802024 | Marco Caldarelli | Marco M. Caldarelli | Quantum implementation of the cosmic censorship conjecture for toroidal
black holes | 12 pages, RevTeX, no figures, corrected typos | Phys.Rev. D58 (1998) 064008 | 10.1103/PhysRevD.58.064008 | null | gr-qc | null | We consider some aspects of quantum field theory of a conformally coupled
scalar field on the singular background obtained in the massless limit of a
class of toroidal black holes. The stress-tensor and its back-reaction on the
metric are computed using the point-splitting regularization, in the cases of
transparent,... | [
{
"created": "Tue, 10 Feb 1998 18:25:37 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Feb 1998 18:50:08 GMT",
"version": "v2"
},
{
"created": "Thu, 17 Sep 1998 17:49:42 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Caldarelli",
"Marco M.",
""
]
] | We consider some aspects of quantum field theory of a conformally coupled scalar field on the singular background obtained in the massless limit of a class of toroidal black holes. The stress-tensor and its back-reaction on the metric are computed using the point-splitting regularization, in the cases of transparent, N... |
gr-qc/0606027 | Christian Fronsdal | Christian Fronsdal | Ideal Stars and General Relativity | 26 pages, 7 figures | Gen.Rel.Grav.39:1971-2000,2007 | 10.1007/s10714-007-0496-1 | UCLA/06/TEP15 | gr-qc | null | We study a system of differential equations that governs the distribution of
matter in the theory of General Relativity. The new element in this paper is
the use of a dynamical action principle that includes all the degrees of
freedom, matter as well as metric. The matter lagrangian defines a relativistic
version of ... | [
{
"created": "Tue, 6 Jun 2006 18:47:16 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Fronsdal",
"Christian",
""
]
] | We study a system of differential equations that governs the distribution of matter in the theory of General Relativity. The new element in this paper is the use of a dynamical action principle that includes all the degrees of freedom, matter as well as metric. The matter lagrangian defines a relativistic version of no... |
2104.10119 | Charles Dalang | Charles Dalang, Giulia Cusin, Macarena Lagos | Polarization distortions of lensed gravitational waves | 18 pages, 5 figures, added Appendix C | null | 10.1103/PhysRevD.105.024005 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general relativity (GR), gravitational waves (GWs) propagate the
well-known plus and cross polarization modes which are the signature of a
massless spin-2 field. However, diffraction of GWs caused by intervening
objects along the line of sight can cause the apparent rise of additional
polarizations due to GW-curva... | [
{
"created": "Tue, 20 Apr 2021 17:03:48 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Nov 2021 17:41:16 GMT",
"version": "v2"
}
] | 2022-01-12 | [
[
"Dalang",
"Charles",
""
],
[
"Cusin",
"Giulia",
""
],
[
"Lagos",
"Macarena",
""
]
] | In general relativity (GR), gravitational waves (GWs) propagate the well-known plus and cross polarization modes which are the signature of a massless spin-2 field. However, diffraction of GWs caused by intervening objects along the line of sight can cause the apparent rise of additional polarizations due to GW-curvatu... |
1608.05716 | Edgar Gasperin | Edgar Gasperin, Juan Antonio Valiente Kroon | Zero rest-mass fields and the Newman-Penrose constants on flat space | 36 pages. Updated version. Main results changed | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Zero rest-mass fields of spin 1 (the electromagnetic field) and spin 2
propagating on flat space and their corresponding Newman-Penrose (NP) constants
are studied near spatial infinity. The aim of this analysis is to clarify the
correspondence between data for these fields on a spacelike hypersurface and
the value of... | [
{
"created": "Fri, 19 Aug 2016 20:00:08 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Oct 2020 08:58:55 GMT",
"version": "v2"
}
] | 2020-10-23 | [
[
"Gasperin",
"Edgar",
""
],
[
"Kroon",
"Juan Antonio Valiente",
""
]
] | Zero rest-mass fields of spin 1 (the electromagnetic field) and spin 2 propagating on flat space and their corresponding Newman-Penrose (NP) constants are studied near spatial infinity. The aim of this analysis is to clarify the correspondence between data for these fields on a spacelike hypersurface and the value of t... |
1910.09580 | Karan Jani | Karan Jani, Abraham Loeb | Global Stellar Budget for LIGO Black Holes | null | null | 10.3847/2041-8213/ab6854 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The binary black hole mergers observed by LIGO-Virgo gravitational-wave
detectors pose two major challenges: (i) how to produce these massive black
holes from stellar processes; and (ii) how to bring them close enough to merge
within the age of the universe? We derive a fundamental constraint relating the
binary sepa... | [
{
"created": "Mon, 21 Oct 2019 18:13:28 GMT",
"version": "v1"
}
] | 2020-02-12 | [
[
"Jani",
"Karan",
""
],
[
"Loeb",
"Abraham",
""
]
] | The binary black hole mergers observed by LIGO-Virgo gravitational-wave detectors pose two major challenges: (i) how to produce these massive black holes from stellar processes; and (ii) how to bring them close enough to merge within the age of the universe? We derive a fundamental constraint relating the binary separa... |
2008.01433 | Paul R. Anderson | Richard A. Dudley, Alessandro Fabbri, Paul R. Anderson, and Roberto
Balbinot | Correlations between a Hawking particle and its partner in a 1+1D
Bose-Einstein condensate analog black hole | Some changes and corrections in the text, cosmetic changes in two
figures, one reference added, Phys. Rev. D version, 24 pages, 8 figures | Phys. Rev. D 102, 105005 (2020) | 10.1103/PhysRevD.102.105005 | null | gr-qc cond-mat.quant-gas hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Fourier transform of the density-density correlation function in a
Bose-Einstein condensate (BEC) analog black hole is a useful tool to
investigate correlations between the Hawking particles and their partners. It
can be expressed in terms of $\langle
^{\text{out}}\hat{a}_{\text{up}}^{\text{ext}}\
^{\text{out}}\h... | [
{
"created": "Tue, 4 Aug 2020 09:37:09 GMT",
"version": "v1"
},
{
"created": "Mon, 17 May 2021 20:00:52 GMT",
"version": "v2"
}
] | 2021-05-19 | [
[
"Dudley",
"Richard A.",
""
],
[
"Fabbri",
"Alessandro",
""
],
[
"Anderson",
"Paul R.",
""
],
[
"Balbinot",
"Roberto",
""
]
] | The Fourier transform of the density-density correlation function in a Bose-Einstein condensate (BEC) analog black hole is a useful tool to investigate correlations between the Hawking particles and their partners. It can be expressed in terms of $\langle ^{\text{out}}\hat{a}_{\text{up}}^{\text{ext}}\ ^{\text{out}}\hat... |
1306.0972 | Stefan Ballmer | Stefan W. Ballmer, David J. Ottaway | A New Class of Optical Beams for Large Baseline Interferometric
Gravitational Wave Detectors | null | null | 10.1103/PhysRevD.88.062004 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A folded resonant Fabry-Perot cavity has the potential to significantly
reduce the impact of coating thermal noise on the performance of kilometer
scale gravitational wave detectors. When constructed using only spherical
mirror surfaces it is possible to utilize the extremely robust $TEM_{00}$ mode
optical mode. In t... | [
{
"created": "Wed, 5 Jun 2013 03:36:48 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Jun 2013 03:11:02 GMT",
"version": "v2"
},
{
"created": "Fri, 28 Jun 2013 00:39:26 GMT",
"version": "v3"
},
{
"created": "Mon, 2 Sep 2013 03:56:33 GMT",
"version": "v4"
}
] | 2013-10-02 | [
[
"Ballmer",
"Stefan W.",
""
],
[
"Ottaway",
"David J.",
""
]
] | A folded resonant Fabry-Perot cavity has the potential to significantly reduce the impact of coating thermal noise on the performance of kilometer scale gravitational wave detectors. When constructed using only spherical mirror surfaces it is possible to utilize the extremely robust $TEM_{00}$ mode optical mode. In thi... |
0707.2829 | Yongli Ping | Yongli Ping, Lixin Xu, Hongya Liu | Correspondence Between DGP Brane Cosmology and 5D Ricci-flat Cosmology | 8 pages, 1 figure, accepted by MPLA, added reference | Mod.Phys.Lett.A23:695-702,2008 | 10.1142/S0217732308024079 | null | gr-qc | null | We discuss the correspondence between the DGP brane cosmology and 5D
Ricci-flat cosmology by letting their metrics equal each other. By this
correspondence, a specific geometrical property of the arbitrary integral
constant I in DGP metric is given and it is related to the curvature of 5D
bulk. At the same time, the ... | [
{
"created": "Thu, 19 Jul 2007 02:13:58 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jul 2007 01:34:01 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Ping",
"Yongli",
""
],
[
"Xu",
"Lixin",
""
],
[
"Liu",
"Hongya",
""
]
] | We discuss the correspondence between the DGP brane cosmology and 5D Ricci-flat cosmology by letting their metrics equal each other. By this correspondence, a specific geometrical property of the arbitrary integral constant I in DGP metric is given and it is related to the curvature of 5D bulk. At the same time, the re... |
gr-qc/0210046 | Ozay Gurtug | O.Gurtug and M.Halilsoy | Failure of a Stability Conjecture in General Relativity | 8 Pages. Accepted for publication in Nuovo Cimento B | Nuovo Cim.B117:493-499,2002 | null | null | gr-qc | null | By employing an exact back-reaction geometry, Helliwell-Konkowski stability
conjecture is shown to fail. This happens when a test null dust is inserted to
the interaction region of cross-polarized Bell-Szekeres spacetime.
| [
{
"created": "Tue, 15 Oct 2002 11:02:29 GMT",
"version": "v1"
}
] | 2010-11-11 | [
[
"Gurtug",
"O.",
""
],
[
"Halilsoy",
"M.",
""
]
] | By employing an exact back-reaction geometry, Helliwell-Konkowski stability conjecture is shown to fail. This happens when a test null dust is inserted to the interaction region of cross-polarized Bell-Szekeres spacetime. |
gr-qc/0601108 | Ralf Schutzhold | Friedemann Queisser, Michael Uhlmann, and Ralf Sch\"utzhold | Signatures of Planck-scale interactions in the cosmic microwave
background? | 4 pages | Class.Quant.Grav.24:1375-1384,2007 | 10.1088/0264-9381/24/6/001 | null | gr-qc | null | Based on a rather general low-energy effective action (interacting quantum
fields in classical curved space-times), we calculate potential signatures of
new physics (such as quantum gravity) at ultra-high energies (presumably the
Planck scale) in the anisotropies of the cosmic microwave background. These
Planck-scale... | [
{
"created": "Wed, 25 Jan 2006 15:37:55 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Queisser",
"Friedemann",
""
],
[
"Uhlmann",
"Michael",
""
],
[
"Schützhold",
"Ralf",
""
]
] | Based on a rather general low-energy effective action (interacting quantum fields in classical curved space-times), we calculate potential signatures of new physics (such as quantum gravity) at ultra-high energies (presumably the Planck scale) in the anisotropies of the cosmic microwave background. These Planck-scale i... |
1409.2696 | David Keitel | David Keitel, Reinhard Prix | Line-robust statistics for continuous gravitational waves: safety in the
case of unequal detector sensitivities | 21 pages, 11 figures, updated to match published version | Class. Quantum Grav. 32 (2015) 035004 | 10.1088/0264-9381/32/3/035004 | LIGO-P1400161; AEI-2014-039 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The multi-detector F-statistic is close to optimal for detecting continuous
gravitational waves (CWs) in Gaussian noise. However, it is susceptible to
false alarms from instrumental artefacts, for example quasi-monochromatic
disturbances ('lines'), which resemble a CW signal more than Gaussian noise. In
a recent pape... | [
{
"created": "Tue, 9 Sep 2014 11:45:19 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Jan 2015 11:46:07 GMT",
"version": "v2"
}
] | 2015-01-19 | [
[
"Keitel",
"David",
""
],
[
"Prix",
"Reinhard",
""
]
] | The multi-detector F-statistic is close to optimal for detecting continuous gravitational waves (CWs) in Gaussian noise. However, it is susceptible to false alarms from instrumental artefacts, for example quasi-monochromatic disturbances ('lines'), which resemble a CW signal more than Gaussian noise. In a recent paper ... |
1604.01001 | Ali Mozaffari | Ali Mozaffari | Testing General Free Functions in Preferred Scale Theories | 8 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Building on previous work, we explore the parameter space of general free
functions in non-relativistic modified gravity theories motivated by k-essence
and other scalar-tensor theories. Using a few proposed tests, we aim to update
Solar System based constraints on these ideas in line with previous theories
and sugge... | [
{
"created": "Mon, 4 Apr 2016 19:49:02 GMT",
"version": "v1"
}
] | 2016-04-05 | [
[
"Mozaffari",
"Ali",
""
]
] | Building on previous work, we explore the parameter space of general free functions in non-relativistic modified gravity theories motivated by k-essence and other scalar-tensor theories. Using a few proposed tests, we aim to update Solar System based constraints on these ideas in line with previous theories and suggest... |
2111.15027 | Roman Berens | Prakruth Adari, Roman Berens, Janna Levin | Charging up Boosted Black Holes | 23 pages, 12 figures v2: added references v3: added subsection 3.1.1,
replaced grainy figures in section 3.1, edited language | null | null | null | gr-qc astro-ph.HE hep-th | http://creativecommons.org/licenses/by/4.0/ | Contrary to a prevailing assumption that black holes would swiftly discharge,
we argue that black holes can charge preferentially when boosted through an
ambient magnetic field. Though the details are very different, the preference
for charge is related to the precipitation of the Wald charge on a spinning
black hole... | [
{
"created": "Mon, 29 Nov 2021 23:53:55 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Dec 2021 07:13:29 GMT",
"version": "v2"
},
{
"created": "Sun, 4 Dec 2022 07:39:42 GMT",
"version": "v3"
}
] | 2022-12-06 | [
[
"Adari",
"Prakruth",
""
],
[
"Berens",
"Roman",
""
],
[
"Levin",
"Janna",
""
]
] | Contrary to a prevailing assumption that black holes would swiftly discharge, we argue that black holes can charge preferentially when boosted through an ambient magnetic field. Though the details are very different, the preference for charge is related to the precipitation of the Wald charge on a spinning black hole i... |
1402.4859 | Huan Yang | Huan Yang, Aaron Zimmerman, Luis Lehner | Turbulent Black Holes | 5+3 pages, 2 figures, corrected an error in the treatment of the
driving mode; example and figures changed, discussion added | Phys. Rev. Lett. 114, 081101 (2015) | 10.1103/PhysRevLett.114.081101 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that rapidly-spinning black holes can display turbulent gravitational
behavior which is mediated by a new type of parametric instability. This
instability transfers energy from higher temporal and azimuthal spatial
frequencies to lower frequencies--- a phenomenon reminiscent of the inverse
energy cascade disp... | [
{
"created": "Thu, 20 Feb 2014 01:16:45 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Mar 2014 05:44:47 GMT",
"version": "v2"
}
] | 2015-03-05 | [
[
"Yang",
"Huan",
""
],
[
"Zimmerman",
"Aaron",
""
],
[
"Lehner",
"Luis",
""
]
] | We show that rapidly-spinning black holes can display turbulent gravitational behavior which is mediated by a new type of parametric instability. This instability transfers energy from higher temporal and azimuthal spatial frequencies to lower frequencies--- a phenomenon reminiscent of the inverse energy cascade displa... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.