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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1910.00083 | Francisco Nogueira Lima | A. S. Ribeiro and F. N. Lima | An exact solution of the orbit equation for a massive particle in
Schwarzschild metric | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we consider a spherically curved symmetric spacetime to exact
solving the orbit equation of a massive particle by using Jacobi's elliptic
functions. Generally, the solution of the orbit equation provides the
relativistic effects on the massive particle, absents in Newtonian mechanics.
Besides, we inves... | [
{
"created": "Mon, 30 Sep 2019 20:19:26 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Oct 2019 14:39:48 GMT",
"version": "v2"
},
{
"created": "Fri, 13 Mar 2020 19:37:59 GMT",
"version": "v3"
}
] | 2020-03-17 | [
[
"Ribeiro",
"A. S.",
""
],
[
"Lima",
"F. N.",
""
]
] | In this paper, we consider a spherically curved symmetric spacetime to exact solving the orbit equation of a massive particle by using Jacobi's elliptic functions. Generally, the solution of the orbit equation provides the relativistic effects on the massive particle, absents in Newtonian mechanics. Besides, we investi... |
1706.03596 | Ronaldo Vieira Lobato | G. A. Carvalho, R. V. Lobato, P. H. R. S. Moraes, Jos\'e D. V.
Arba\~nil, R. M. Marinho Jr, E. Otoniel and M. Malheiro | Stellar equilibrium configurations of white dwarfs in the $f(R,T)$
gravity | To be published in EPJC | null | 10.1140/epjc/s10052-017-5413-5 | null | gr-qc astro-ph.SR hep-th nucl-th | http://creativecommons.org/licenses/by-nc-sa/4.0/ | In this work we investigate the equilibrium configurations of white dwarfs in
a modified gravity theory, na\-mely, $f(R,T)$ gravity, for which $R$ and $T$
stand for the Ricci scalar and trace of the energy-momentum tensor,
respectively. Considering the functional form $f(R,T)=R+2\lambda T$, with
$\lambda$ being a con... | [
{
"created": "Mon, 12 Jun 2017 12:29:18 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Nov 2017 16:46:11 GMT",
"version": "v2"
}
] | 2017-12-20 | [
[
"Carvalho",
"G. A.",
""
],
[
"Lobato",
"R. V.",
""
],
[
"Moraes",
"P. H. R. S.",
""
],
[
"Arbañil",
"José D. V.",
""
],
[
"Marinho",
"R. M.",
"Jr"
],
[
"Otoniel",
"E.",
""
],
[
"Malheiro",
"M.",
""
]
] | In this work we investigate the equilibrium configurations of white dwarfs in a modified gravity theory, na\-mely, $f(R,T)$ gravity, for which $R$ and $T$ stand for the Ricci scalar and trace of the energy-momentum tensor, respectively. Considering the functional form $f(R,T)=R+2\lambda T$, with $\lambda$ being a const... |
2109.04209 | Lavinia Heisenberg | Fabio D'Ambrosio, Lavinia Heisenberg and Simon Kuhn | Revisiting Cosmologies in Teleparallelism | 17 pages, no figures | null | 10.1088/1361-6382/ac3f99 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | We discuss the most general field equations for cosmological spacetimes for
theories of gravity based on non-linear extensions of the non-metricity scalar
and the torsion scalar. Our approach is based on a systematic
symmetry-reduction of the metric-affine geometry which underlies these
theories. While for the simple... | [
{
"created": "Thu, 9 Sep 2021 12:29:29 GMT",
"version": "v1"
},
{
"created": "Sun, 12 Sep 2021 06:11:26 GMT",
"version": "v2"
}
] | 2022-01-05 | [
[
"D'Ambrosio",
"Fabio",
""
],
[
"Heisenberg",
"Lavinia",
""
],
[
"Kuhn",
"Simon",
""
]
] | We discuss the most general field equations for cosmological spacetimes for theories of gravity based on non-linear extensions of the non-metricity scalar and the torsion scalar. Our approach is based on a systematic symmetry-reduction of the metric-affine geometry which underlies these theories. While for the simplest... |
1904.12983 | Luca Visinelli | Cosimo Bambi, Katherine Freese, Sunny Vagnozzi, Luca Visinelli | Testing the rotational nature of the supermassive object M87* from the
circularity and size of its first image | 9 pages, 4 figures, Accepted in PRD | Phys. Rev. D 100 (2019) 044057 | 10.1103/PhysRevD.100.044057 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Event Horizon Telescope (EHT) collaboration has recently released the
first image of a black hole (BH), opening a new window onto tests of general
relativity in the strong field regime. In this paper, we derive constraints on
the nature of M87* (the supermassive object at the centre of the galaxy M87),
exploiting... | [
{
"created": "Mon, 29 Apr 2019 23:04:12 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Aug 2019 12:36:19 GMT",
"version": "v2"
}
] | 2020-02-24 | [
[
"Bambi",
"Cosimo",
""
],
[
"Freese",
"Katherine",
""
],
[
"Vagnozzi",
"Sunny",
""
],
[
"Visinelli",
"Luca",
""
]
] | The Event Horizon Telescope (EHT) collaboration has recently released the first image of a black hole (BH), opening a new window onto tests of general relativity in the strong field regime. In this paper, we derive constraints on the nature of M87* (the supermassive object at the centre of the galaxy M87), exploiting t... |
0806.0014 | Sean A. Hayward | S. A. Hayward, R. Di Criscienzo, M. Nadalini, L. Vanzo and S. Zerbini | Local Hawking temperature for dynamical black holes | 9 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A local Hawking temperature is derived for any future outer trapping horizon
in spherical symmetry, using a Hamilton-Jacobi variant of the Parikh-Wilczek
tunneling method. It is given by a dynamical surface gravity as defined
geometrically. The operational meaning of the temperature is that Kodama
observers just outs... | [
{
"created": "Fri, 30 May 2008 20:42:47 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Feb 2009 11:48:23 GMT",
"version": "v2"
}
] | 2009-02-11 | [
[
"Hayward",
"S. A.",
""
],
[
"Di Criscienzo",
"R.",
""
],
[
"Nadalini",
"M.",
""
],
[
"Vanzo",
"L.",
""
],
[
"Zerbini",
"S.",
""
]
] | A local Hawking temperature is derived for any future outer trapping horizon in spherical symmetry, using a Hamilton-Jacobi variant of the Parikh-Wilczek tunneling method. It is given by a dynamical surface gravity as defined geometrically. The operational meaning of the temperature is that Kodama observers just outsid... |
2011.01248 | Francesco Bajardi | Francesco Bajardi, Daniele Vernieri, Salvatore Capozziello | Bouncing Cosmology in f(Q) Symmetric Teleparallel Gravity | 11 pages, 1 figure, 68 references | Eur. Phys. J. Plus 135, no.11, 912 (2020) | 10.1140/epjp/s13360-020-00918-3 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider f(Q) extended symmetric teleparallel cosmologies, where Q is the
non-metricity scalar, and constrain its functional form through the order
reduction method. By using this technique, we are able to reduce and integrate
the field equations and thus to select the corresponding models giving rise to
bouncing ... | [
{
"created": "Mon, 2 Nov 2020 19:00:04 GMT",
"version": "v1"
}
] | 2020-12-03 | [
[
"Bajardi",
"Francesco",
""
],
[
"Vernieri",
"Daniele",
""
],
[
"Capozziello",
"Salvatore",
""
]
] | We consider f(Q) extended symmetric teleparallel cosmologies, where Q is the non-metricity scalar, and constrain its functional form through the order reduction method. By using this technique, we are able to reduce and integrate the field equations and thus to select the corresponding models giving rise to bouncing co... |
0806.4239 | Lorenzo Sindoni | Florian Girelli, Stefano Liberati and Lorenzo Sindoni | On the emergence of Lorentzian signature and scalar gravity | 10 pages, revtex4. Replaced with the published version | Phys.Rev.D79:044019,2009 | 10.1103/PhysRevD.79.044019 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In recent years, a growing momentum has been gained by the emergent gravity
framework. Within the latter, the very concepts of geometry and gravitational
interaction are not seen as elementary aspects of Nature but rather as
collective phenomena associated to the dynamics of more fundamental objects. In
this paper we... | [
{
"created": "Thu, 26 Jun 2008 18:46:40 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Feb 2009 11:17:03 GMT",
"version": "v2"
}
] | 2009-04-08 | [
[
"Girelli",
"Florian",
""
],
[
"Liberati",
"Stefano",
""
],
[
"Sindoni",
"Lorenzo",
""
]
] | In recent years, a growing momentum has been gained by the emergent gravity framework. Within the latter, the very concepts of geometry and gravitational interaction are not seen as elementary aspects of Nature but rather as collective phenomena associated to the dynamics of more fundamental objects. In this paper we w... |
gr-qc/0110021 | Andrzej Herdegen | Andrzej Herdegen and Jaroslaw Wawrzycki | Is Einstein's equivalence principle valid for a quantum particle? | 5 pages, RevTeX, published version, references and comments added | Phys.Rev. D66 (2002) 044007 | 10.1103/PhysRevD.66.044007 | null | gr-qc quant-ph | null | Einstein's equivalence principle in classical physics is a rule stating that
the effect of gravitation is locally equivalent to the acceleration of an
observer. The principle determines the motion of test particles uniquely
(modulo very broad general assumptions). We show that the same principle
applied to a quantum ... | [
{
"created": "Wed, 3 Oct 2001 09:53:16 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Jan 2003 08:22:53 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Herdegen",
"Andrzej",
""
],
[
"Wawrzycki",
"Jaroslaw",
""
]
] | Einstein's equivalence principle in classical physics is a rule stating that the effect of gravitation is locally equivalent to the acceleration of an observer. The principle determines the motion of test particles uniquely (modulo very broad general assumptions). We show that the same principle applied to a quantum pa... |
1009.4544 | Sergey Kozyrev | S. Kozyrev | Composite spherically symmetric configurations in Jordan-Brans-Dicke
theory | 6 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, a study of the scalar field shells in relativistic
spherically symmetric configurations has been performed. We construct the
composite solution of Jordan-Brans-Dicke field equation by matching the
conformal Brans solutions at each junction surfaces. This approach allows us to
associate rigorously wit... | [
{
"created": "Thu, 23 Sep 2010 08:55:50 GMT",
"version": "v1"
}
] | 2010-09-24 | [
[
"Kozyrev",
"S.",
""
]
] | In this article, a study of the scalar field shells in relativistic spherically symmetric configurations has been performed. We construct the composite solution of Jordan-Brans-Dicke field equation by matching the conformal Brans solutions at each junction surfaces. This approach allows us to associate rigorously with ... |
gr-qc/0302057 | Kouji Nakamura | Kouji Nakamura | Comparison of the oscillatory behaviors of a gravitating Nambu-Goto
string with a test string | 32 pages, 1 figure, PTPTeX ver.0.8 (LateX2e), Accepted for
publication to Progress of Theoretical Physics | Prog.Theor.Phys. 110 (2003) 201-232 | 10.1143/PTP.110.201 | NAOJ-TH-Ap 2003, No.4 | gr-qc astro-ph hep-ph hep-th | null | Comparison of the oscillatory behavior of a gravitating infinite Nambu-Goto
string and a test string is investigated using the general relativistic gauge
invariant perturbation technique with two infinitesimal parameters on a flat
spacetime background. Due to the existence of the pp-wave exact solution, we
see that t... | [
{
"created": "Fri, 14 Feb 2003 04:45:48 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Mar 2003 08:56:48 GMT",
"version": "v2"
},
{
"created": "Wed, 14 May 2003 08:18:49 GMT",
"version": "v3"
},
{
"created": "Mon, 21 Jul 2003 11:54:41 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Nakamura",
"Kouji",
""
]
] | Comparison of the oscillatory behavior of a gravitating infinite Nambu-Goto string and a test string is investigated using the general relativistic gauge invariant perturbation technique with two infinitesimal parameters on a flat spacetime background. Due to the existence of the pp-wave exact solution, we see that the... |
2103.13824 | Behnam Pourhassan | Mir Hameeda, Behnam Pourhassan, Mario C. Rocca, and Mir Faizal | Finite Tsallis Gravitational Partition Function for a System of Galaxies | Accepted for publication in General Relativity and Gravitation | Gen.Rel.Grav. 53 (2021) 4, 41 | 10.1007/s10714-021-02813-3 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we will study the large scale structure formation using the
gravitational partition function. We will assertively argue that the system of
gravitating galaxies can be analyzed using the Tsallis statistical mechanics.
The divergences in the Tsallis gravitational partition function can be removed
using t... | [
{
"created": "Wed, 24 Mar 2021 10:27:52 GMT",
"version": "v1"
}
] | 2021-05-13 | [
[
"Hameeda",
"Mir",
""
],
[
"Pourhassan",
"Behnam",
""
],
[
"Rocca",
"Mario C.",
""
],
[
"Faizal",
"Mir",
""
]
] | In this paper, we will study the large scale structure formation using the gravitational partition function. We will assertively argue that the system of gravitating galaxies can be analyzed using the Tsallis statistical mechanics. The divergences in the Tsallis gravitational partition function can be removed using the... |
gr-qc/9905015 | Winfried Zimdahl | Winfried Zimdahl (Konstanz) and Alexander B. Balakin (Kazan) | Thermodynamic equilibrium in the expanding universe | 10 pages, Latex, to appear in GRG | Gen.Rel.Grav. 31 (1999) 1395-1405 | 10.1023/A:1026741228100 | null | gr-qc astro-ph | null | We show that a relativistic gas may be at ``global'' equilibrium in the
expanding universe for any equation of state $0 < p \leq \rho /3$, provided
that the gas particles move under the influence of a self-interacting,
effective one-particle force in between elastic binary collisions. In the
force-free limit we recov... | [
{
"created": "Thu, 6 May 1999 06:50:27 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Zimdahl",
"Winfried",
"",
"Konstanz"
],
[
"Balakin",
"Alexander B.",
"",
"Kazan"
]
] | We show that a relativistic gas may be at ``global'' equilibrium in the expanding universe for any equation of state $0 < p \leq \rho /3$, provided that the gas particles move under the influence of a self-interacting, effective one-particle force in between elastic binary collisions. In the force-free limit we recover... |
gr-qc/0103068 | Cristiano Germani | C. Germani, D. Bini, R.T. Jantzen | A Classical Interpretation of Maxwell's Equations in Curved Spacetime | MGIX proceedings, 2 pages, added a reference | null | null | null | gr-qc | null | We present an integral formulation of observer-dependent Maxwell's equations
in curved spacetime and give a classical interpretation of them.
| [
{
"created": "Sun, 18 Mar 2001 13:26:54 GMT",
"version": "v1"
},
{
"created": "Mon, 26 Mar 2001 08:43:49 GMT",
"version": "v2"
},
{
"created": "Mon, 9 Apr 2001 13:48:08 GMT",
"version": "v3"
},
{
"created": "Fri, 19 Oct 2001 14:22:36 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Germani",
"C.",
""
],
[
"Bini",
"D.",
""
],
[
"Jantzen",
"R. T.",
""
]
] | We present an integral formulation of observer-dependent Maxwell's equations in curved spacetime and give a classical interpretation of them. |
0904.0773 | Sunil Maharaj | A. Beesham, S. V. Chervon, S. D. Maharaj | An emergent universe supported by a nonlinear sigma model | 10 pages, To appear in Class. Quantum. Grav | Class.Quant.Grav.26:075017,2009 | 10.1088/0264-9381/26/7/075017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We suggest the use of a nonlinear sigma model as the source which supports an
emergent universe. The two-component nonlinear sigma model is considered as the
simplest model containing inflaton and auxiliary chiral fields.
| [
{
"created": "Sun, 5 Apr 2009 14:09:11 GMT",
"version": "v1"
}
] | 2009-05-08 | [
[
"Beesham",
"A.",
""
],
[
"Chervon",
"S. V.",
""
],
[
"Maharaj",
"S. D.",
""
]
] | We suggest the use of a nonlinear sigma model as the source which supports an emergent universe. The two-component nonlinear sigma model is considered as the simplest model containing inflaton and auxiliary chiral fields. |
gr-qc/9711083 | Luis Bel | Lluis Bel | A distinguished set of modes in an accelerated frame of reference | To appear in "Analytical and Numerical Approaches to Relativity:
Sources of Gravitational Radiation", ERE 1997, ed J.Stela, UIB, Palma de
Mallorca, Spain | null | null | null | gr-qc | null | We construct a distinguished set of positive and negative energy modes of the
Klein-Gordon equation for any Born frame of reference in Minkowski's
space-time. Unlike the case of a galilean frame of reference it is unclear
whether this set of modes may be an appropriate basis to define the vacuum of a
quantized scalar... | [
{
"created": "Thu, 27 Nov 1997 11:09:03 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Bel",
"Lluis",
""
]
] | We construct a distinguished set of positive and negative energy modes of the Klein-Gordon equation for any Born frame of reference in Minkowski's space-time. Unlike the case of a galilean frame of reference it is unclear whether this set of modes may be an appropriate basis to define the vacuum of a quantized scalar f... |
2105.03744 | Sobhan Kazempour | Amin Rezaei Akbarieh, Sobhan Kazempour and Lijing Shao | Cosmological perturbations in Gauss-Bonnet quasi-dilaton massive gravity | null | Phys. Rev. D 103, 123518 (2021) | 10.1103/PhysRevD.103.123518 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We present the cosmological analysis of the Gauss-Bonnet quasi-dilaton
massive gravity theory. This offers a gravitational theory with a non-zero
graviton mass. We calculate the complete set of background equations of motion.
Also, we obtain the self-accelerating background solutions and we present the
constraints on... | [
{
"created": "Sat, 8 May 2021 17:09:13 GMT",
"version": "v1"
},
{
"created": "Mon, 12 Jul 2021 18:43:56 GMT",
"version": "v2"
}
] | 2021-07-14 | [
[
"Akbarieh",
"Amin Rezaei",
""
],
[
"Kazempour",
"Sobhan",
""
],
[
"Shao",
"Lijing",
""
]
] | We present the cosmological analysis of the Gauss-Bonnet quasi-dilaton massive gravity theory. This offers a gravitational theory with a non-zero graviton mass. We calculate the complete set of background equations of motion. Also, we obtain the self-accelerating background solutions and we present the constraints on p... |
gr-qc/0108058 | Kayll Lake | Mustapha Ishak and Kayll Lake | Stability of Transparent Spherically Symmetric Thin Shells and Wormholes | 12 pages, 7 figures, revtex. Final form to appear in Phys. Rev. D | Phys.Rev. D65 (2002) 044011 | 10.1103/PhysRevD.65.044011 | null | gr-qc | null | The stability of transparent spherically symmetric thin shells (and
wormholes) to linearized spherically symmetric perturbations about static
equilibrium is examined. This work generalizes and systematizes previous
studies and explores the consequences of including the cosmological constant.
The approach shows how th... | [
{
"created": "Fri, 24 Aug 2001 17:16:28 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Dec 2001 15:24:01 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Ishak",
"Mustapha",
""
],
[
"Lake",
"Kayll",
""
]
] | The stability of transparent spherically symmetric thin shells (and wormholes) to linearized spherically symmetric perturbations about static equilibrium is examined. This work generalizes and systematizes previous studies and explores the consequences of including the cosmological constant. The approach shows how the ... |
2307.10136 | Antonino Marciano | Matteo Lulli, Antonino Marciano and Kristian Piscicchia | Stochastic Ricci Flow dynamics of the gravitationally induced
wave-function collapse | 14 pages | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In order to reconcile the wave-function collapse in quantum mechanics with
the finiteness of signals' propagation in general relativity, we delve into a
stochastic version of the Ricci flow and study its non-relativistic limit in
presence of matter. We hence derive the Di\'osi-Penrose collapse model for the
wave-func... | [
{
"created": "Wed, 19 Jul 2023 17:00:48 GMT",
"version": "v1"
}
] | 2023-07-20 | [
[
"Lulli",
"Matteo",
""
],
[
"Marciano",
"Antonino",
""
],
[
"Piscicchia",
"Kristian",
""
]
] | In order to reconcile the wave-function collapse in quantum mechanics with the finiteness of signals' propagation in general relativity, we delve into a stochastic version of the Ricci flow and study its non-relativistic limit in presence of matter. We hence derive the Di\'osi-Penrose collapse model for the wave-functi... |
2007.14881 | Brian Seymour | Brian C. Seymour, Kent Yagi | Probing Massive Scalar/Vector Fields with Binary Pulsars | minor edits, 12 pages, 3 figures | Phys. Rev. D 102, 104003 (2020) | 10.1103/PhysRevD.102.104003 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Precision tests of general relativity can be conducted by observing binary
pulsars. Theories with massive fields exist to explain a variety of phenomena
from dark energy to the strong CP problem. Existing pulsar binaries, such as
the white dwarf-pulsar binary J1738+0333, have been used to place stringent
bounds on th... | [
{
"created": "Wed, 29 Jul 2020 14:58:17 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Oct 2020 00:47:11 GMT",
"version": "v2"
}
] | 2020-11-11 | [
[
"Seymour",
"Brian C.",
""
],
[
"Yagi",
"Kent",
""
]
] | Precision tests of general relativity can be conducted by observing binary pulsars. Theories with massive fields exist to explain a variety of phenomena from dark energy to the strong CP problem. Existing pulsar binaries, such as the white dwarf-pulsar binary J1738+0333, have been used to place stringent bounds on the ... |
gr-qc/9606029 | M. B. Paranjape | A. Edery and M. B. Paranjape | Localized Mass and Spin Sources in 2+1 Dimensional Topologically Massive
Gravity | revised version, minor corrections, latex, 8 pages | Phys.Lett.B413:35-40,1997 | 10.1016/S0370-2693(97)01101-5 | UDEM-GPP-TH-96-37 | gr-qc | null | Stationary solutions to the full non-linear topologically massive gravity
(TMG) are obtained for localized sources of mass $m$ and spin $\sigma$. Our
results show that the topological term induces spin and that the total spin J
(which is the spin observed by an asymptotic observer) ranges from 0 to $\sigma
+ \frac{m}... | [
{
"created": "Thu, 13 Jun 1996 20:32:02 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Jun 1997 16:21:16 GMT",
"version": "v2"
}
] | 2008-12-30 | [
[
"Edery",
"A.",
""
],
[
"Paranjape",
"M. B.",
""
]
] | Stationary solutions to the full non-linear topologically massive gravity (TMG) are obtained for localized sources of mass $m$ and spin $\sigma$. Our results show that the topological term induces spin and that the total spin J (which is the spin observed by an asymptotic observer) ranges from 0 to $\sigma + \frac{m}{\... |
1411.3143 | Arturo Stabile | A. Stabile, S. Capozziello | Self-gravitating systems in Extended Gravity | Review paper; 59 pages, 15 figures | Galaxies 2014, 2(4), 520-576 | 10.3390/galaxies2040520 | null | gr-qc astro-ph.GA astro-ph.SR math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Starting from the weak field limit, we discuss astrophysical applications of
Extended Theories of Gravity where higher order curvature invariants and scalar
fields are considered by generalizing the Hilbert-Einstein action linear in the
Ricci curvature scalar $R$. Results are compared to General Relativity in the
hyp... | [
{
"created": "Wed, 12 Nov 2014 11:18:46 GMT",
"version": "v1"
}
] | 2015-02-25 | [
[
"Stabile",
"A.",
""
],
[
"Capozziello",
"S.",
""
]
] | Starting from the weak field limit, we discuss astrophysical applications of Extended Theories of Gravity where higher order curvature invariants and scalar fields are considered by generalizing the Hilbert-Einstein action linear in the Ricci curvature scalar $R$. Results are compared to General Relativity in the hypot... |
2110.05176 | Sandeep S. Cranganore | Sandeep S. Cranganore | The Sugawara-Sommerfield construction including canonical spin current | 26 pages, Latex; typos corrected, title changed, added new subsection
and references in section 7, corrected equations in section 6 | null | 10.1103/PhysRevD.104.124022 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We set up the Sugawara-Sommerfield (SS) construction and generalize it by the
inclusion of canonical spin current. Using the techniques of current algebra,
we infer that the canonical spin current are linear in the vector-axial vector
currents. From a geometric perspective, the underlying manifold has a vanishing
Lor... | [
{
"created": "Thu, 7 Oct 2021 19:27:15 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Nov 2021 21:22:55 GMT",
"version": "v2"
}
] | 2021-12-15 | [
[
"Cranganore",
"Sandeep S.",
""
]
] | We set up the Sugawara-Sommerfield (SS) construction and generalize it by the inclusion of canonical spin current. Using the techniques of current algebra, we infer that the canonical spin current are linear in the vector-axial vector currents. From a geometric perspective, the underlying manifold has a vanishing Loren... |
1906.05557 | Hoang Nam Cao | Cao Hoang Nam | Heat engine efficiency and Joule-Thomson expansion of non-linear charged
AdS black hole in massive gravity | 22 pages | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have considered the heat engine and Joule-Thomson expansion
for the charged AdS black hole in the context of the non-linear electrodynamics
and massive gravity. For the black hole heat engine, we obtained the analytical
expression for the efficiency in terms of either the entropies or the
temperatur... | [
{
"created": "Thu, 13 Jun 2019 09:14:59 GMT",
"version": "v1"
}
] | 2019-06-14 | [
[
"Nam",
"Cao Hoang",
""
]
] | In this paper, we have considered the heat engine and Joule-Thomson expansion for the charged AdS black hole in the context of the non-linear electrodynamics and massive gravity. For the black hole heat engine, we obtained the analytical expression for the efficiency in terms of either the entropies or the temperatures... |
2105.12582 | Emmanuil Saridakis | Emmanuel N. Saridakis, Ruth Lazkoz, Vincenzo Salzano, Paulo Vargas
Moniz, Salvatore Capozziello, Jose Beltr\'an Jim\'enez, Mariafelicia De
Laurentis, Gonzalo J. Olmo, Yashar Akrami, Sebastian Bahamonde, Jose Luis
Bl\'azquez-Salcedo, Christian G. B\"ohmer, Camille Bonvin, Mariam
Bouhmadi-L\'opez, Philippe Brax, ... | Modified Gravity and Cosmology: An Update by the CANTATA Network | 543 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General Relativity and the $\Lambda$CDM framework are currently the standard
lore and constitute the concordance paradigm. Nevertheless, long-standing open
theoretical issues, as well as possible new observational ones arising from the
explosive development of cosmology the last two decades, offer the motivation
and ... | [
{
"created": "Thu, 20 May 2021 17:25:53 GMT",
"version": "v1"
},
{
"created": "Fri, 19 May 2023 08:36:12 GMT",
"version": "v2"
}
] | 2023-05-22 | [
[
"Saridakis",
"Emmanuel N.",
""
],
[
"Lazkoz",
"Ruth",
""
],
[
"Salzano",
"Vincenzo",
""
],
[
"Moniz",
"Paulo Vargas",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"Jiménez",
"Jose Beltrán",
""
],
[
"De Laurentis",
... | General Relativity and the $\Lambda$CDM framework are currently the standard lore and constitute the concordance paradigm. Nevertheless, long-standing open theoretical issues, as well as possible new observational ones arising from the explosive development of cosmology the last two decades, offer the motivation and le... |
gr-qc/0101030 | Lorenzo Iorio | Lorenzo Iorio and Erricos C. Pavlis | Tidal satellite perturbations and the Lense-Thirring effect | 6 pages, LaTex, to appear in Journal of the Geodetic Society of
Japan, vol. 47, no. 1, special issue for the Proceedings of The XIV
International Symposium on Earth tides (ETS 2000) held at Mizusawa, Iwate,
Japan from August 28 to September 1, 2000 | J.Geodet.Soc.Jap.47:1-7,2001 | 10.11366/sokuchi1954.47.169 | null | gr-qc astro-ph physics.geo-ph physics.space-ph | null | The tiny general relativistic Lense-Thirring effect can be measured by means
of a suitable combination of the orbital residuals of the nodes of LAGEOS and
LAGEOS II and the perigee of LAGEOS II. This observable is affected, among
other factors, by the Earth' s solid and ocean tides. They induce long-period
orbital pe... | [
{
"created": "Tue, 9 Jan 2001 09:39:35 GMT",
"version": "v1"
}
] | 2013-11-12 | [
[
"Iorio",
"Lorenzo",
""
],
[
"Pavlis",
"Erricos C.",
""
]
] | The tiny general relativistic Lense-Thirring effect can be measured by means of a suitable combination of the orbital residuals of the nodes of LAGEOS and LAGEOS II and the perigee of LAGEOS II. This observable is affected, among other factors, by the Earth' s solid and ocean tides. They induce long-period orbital pert... |
2407.12954 | Edward Timoshenko G | G. A. Sardanashvily, E. G. Timoshenko | Caustics type of gravitational singularities | 4 pages. Translated from Russian by author on 07.07.2024 | Bulletin of Moscow State University, ISSN 2074-6636, UDC 530.12,
Series 3, Physics and astronomy, Vol. 30, No 3, pp. 75-77 (1989) | 10.6084/m9.figshare.26213036 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We describe a new type of gravitational singularities which are caustics of
spatial-temporal foliations. An example of gravitational wave solution forming
a singularity with caustics is given.
| [
{
"created": "Wed, 17 Jul 2024 18:56:38 GMT",
"version": "v1"
}
] | 2024-07-19 | [
[
"Sardanashvily",
"G. A.",
""
],
[
"Timoshenko",
"E. G.",
""
]
] | We describe a new type of gravitational singularities which are caustics of spatial-temporal foliations. An example of gravitational wave solution forming a singularity with caustics is given. |
1408.3465 | Tiberiu Harko | Tiberiu Harko | Thermodynamic interpretation of the generalized gravity models with
geometry - matter coupling | 12 pages, no figures, accepted for publication in PRD; references
added. arXiv admin note: text overlap with arXiv:gr-qc/0404045 by other
authors without attribution | Physical Review D 90, 044067 (2014) | 10.1103/PhysRevD.90.044067 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modified gravity theories with geometry - matter coupling, in which the
action is an arbitrary function of the Ricci scalar and the matter Lagrangian
($f\left(R,L_m\right)$ gravity), and of the Ricci scalar and of the trace of
the matter energy-momentum tensor ($f(R,T)$ gravity), respectively, have the
intriguing pro... | [
{
"created": "Fri, 15 Aug 2014 05:04:17 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Aug 2014 02:06:42 GMT",
"version": "v2"
}
] | 2015-06-22 | [
[
"Harko",
"Tiberiu",
""
]
] | Modified gravity theories with geometry - matter coupling, in which the action is an arbitrary function of the Ricci scalar and the matter Lagrangian ($f\left(R,L_m\right)$ gravity), and of the Ricci scalar and of the trace of the matter energy-momentum tensor ($f(R,T)$ gravity), respectively, have the intriguing prope... |
2404.19423 | De-Cheng Zou | Shan Wu, Kai-Qiang Qian, Rui-Hong Yue, Ming Zhang and De-Cheng Zou | Thermodynamics of charged Lifshitz black holes with scalar hair | 12 pages, 2 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we discuss the generalized Einstein-Maxwell-Dilaton gravity
theory with a nonminimal coupling between the Maxwell field and scalar field.
Considering different geometric properties of black hole horizon structure, the
charged dilaton Lifshitz black hole solutions are presented in 4-dimensional
spacetime... | [
{
"created": "Tue, 30 Apr 2024 10:13:01 GMT",
"version": "v1"
},
{
"created": "Wed, 1 May 2024 01:38:44 GMT",
"version": "v2"
}
] | 2024-05-02 | [
[
"Wu",
"Shan",
""
],
[
"Qian",
"Kai-Qiang",
""
],
[
"Yue",
"Rui-Hong",
""
],
[
"Zhang",
"Ming",
""
],
[
"Zou",
"De-Cheng",
""
]
] | In this work, we discuss the generalized Einstein-Maxwell-Dilaton gravity theory with a nonminimal coupling between the Maxwell field and scalar field. Considering different geometric properties of black hole horizon structure, the charged dilaton Lifshitz black hole solutions are presented in 4-dimensional spacetimes.... |
gr-qc/0304025 | Carlos Augusto Romero Filho | A. Barros and C. Romero | Gravitomagnetic time delay and the Lense-Thirring effect in Brans-Dicke
theory of gravity | 10 pages Typeset using REVTEX | Mod.Phys.Lett.A18:2117-2124,2003 | 10.1142/S0217732303011721 | null | gr-qc | null | We discuss the gravitomagnetic time delay and the Lense-Thirring effect in
the context of Brans-Dicke theory of gravity. We compare the theoretical
results obtained with those predicted by general relativity. We show that
within the accuracy of experiments designed to measure these effects both
theories predict essen... | [
{
"created": "Sat, 5 Apr 2003 14:08:57 GMT",
"version": "v1"
}
] | 2011-09-13 | [
[
"Barros",
"A.",
""
],
[
"Romero",
"C.",
""
]
] | We discuss the gravitomagnetic time delay and the Lense-Thirring effect in the context of Brans-Dicke theory of gravity. We compare the theoretical results obtained with those predicted by general relativity. We show that within the accuracy of experiments designed to measure these effects both theories predict essenti... |
1501.01053 | Krishnamohan Parattu | Krishnamohan Parattu, Sumanta Chakraborty, Bibhas Ranjan Majhi and T.
Padmanabhan | A Boundary Term for the Gravitational Action with Null Boundaries | 47 pages, no figures, title changed | Gen.Rel.Grav. 48 (2016) no.7, 94 | 10.1007/s10714-016-2093-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Constructing a well-posed variational principle is a non-trivial issue in
general relativity. For spacelike and timelike boundaries, one knows that the
addition of the Gibbons-Hawking-York (GHY) counter-term will make the
variational principle well-defined. This result, however, does not directly
generalize to null b... | [
{
"created": "Tue, 6 Jan 2015 01:09:13 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Aug 2016 17:48:04 GMT",
"version": "v2"
}
] | 2016-08-02 | [
[
"Parattu",
"Krishnamohan",
""
],
[
"Chakraborty",
"Sumanta",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
],
[
"Padmanabhan",
"T.",
""
]
] | Constructing a well-posed variational principle is a non-trivial issue in general relativity. For spacelike and timelike boundaries, one knows that the addition of the Gibbons-Hawking-York (GHY) counter-term will make the variational principle well-defined. This result, however, does not directly generalize to null bou... |
1407.0744 | Leo Stein | Leo C. Stein | Note on Legendre decomposition of the Pontryagin density in Kerr | 3 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In arXiv:1406.0957v1 ("Scalar field excited around a rapidly rotating black
hole in Chern-Simons modified gravity"), Konno and Takahashi have recently
developed some analytical results for the scalar field about a Kerr black hole
in the decoupling limit of dynamical Chern-Simons gravity. This involved a
decomposition... | [
{
"created": "Wed, 2 Jul 2014 23:43:39 GMT",
"version": "v1"
}
] | 2014-07-04 | [
[
"Stein",
"Leo C.",
""
]
] | In arXiv:1406.0957v1 ("Scalar field excited around a rapidly rotating black hole in Chern-Simons modified gravity"), Konno and Takahashi have recently developed some analytical results for the scalar field about a Kerr black hole in the decoupling limit of dynamical Chern-Simons gravity. This involved a decomposition o... |
2004.08027 | Yen-Kheng Lim PhD | Yen-Kheng Lim | Hypocycloid motion in the Melvin magnetic universe | 18 pages, 4 figures. Typos corrected. Introduction and conclusion
improved thanks to the suggestions of the anonymous referee | Phys. Rev. D 101, 104031 (2020) | 10.1103/PhysRevD.101.104031 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The trajectory of a charged test particle in the Melvin magnetic universe is
shown to take the form of hypocycloids in two different regimes, first of which
is the class of perturbed circular orbits, and secondly in the weak-field
approximation. In the latter case we find a simple relation between the charge
of the p... | [
{
"created": "Fri, 17 Apr 2020 01:53:35 GMT",
"version": "v1"
},
{
"created": "Mon, 18 May 2020 01:56:11 GMT",
"version": "v2"
}
] | 2020-05-19 | [
[
"Lim",
"Yen-Kheng",
""
]
] | The trajectory of a charged test particle in the Melvin magnetic universe is shown to take the form of hypocycloids in two different regimes, first of which is the class of perturbed circular orbits, and secondly in the weak-field approximation. In the latter case we find a simple relation between the charge of the par... |
1902.07411 | Daniel Pollack | Madeleine Burkhart, Martin Lesourd, and Daniel Pollack | Null geodesic incompleteness of spacetimes with no CMC Cauchy surfaces | All comments welcome! (v3: Dedication and reference added, minor
changes) | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Chru\'sciel, Isenberg, and Pollack constructed a class of vacuum cosmological
spacetimes that do not admit Cauchy surfaces with constant mean curvature. We
prove that, for sufficiently large values of the gluing parameter, these
examples are both future and past null geodesically incomplete.
The authors are honored... | [
{
"created": "Wed, 20 Feb 2019 05:27:40 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Feb 2019 04:42:14 GMT",
"version": "v2"
},
{
"created": "Thu, 28 Feb 2019 07:01:02 GMT",
"version": "v3"
}
] | 2019-03-01 | [
[
"Burkhart",
"Madeleine",
""
],
[
"Lesourd",
"Martin",
""
],
[
"Pollack",
"Daniel",
""
]
] | Chru\'sciel, Isenberg, and Pollack constructed a class of vacuum cosmological spacetimes that do not admit Cauchy surfaces with constant mean curvature. We prove that, for sufficiently large values of the gluing parameter, these examples are both future and past null geodesically incomplete. The authors are honored to ... |
1605.00497 | Giovanni Amelino-Camelia | Giovanni Amelino-Camelia, Mal\'u Maira da Silva, Michele Ronco,
Lorenzo Cesarini, Orchidea Maria Lecian | Spacetime-noncommutativity regime of Loop Quantum Gravity | null | Phys. Rev. D 95, 024028 (2017) | 10.1103/PhysRevD.95.024028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A recent study by Bojowald and Paily provided a path toward the
identification of an effective quantum-spacetime picture of Loop Quantum
Gravity, applicable in the "Minkowski regime", the regime where the large-scale
(coarse-grained) spacetime metric is flat. A pivotal role in the analysis is
played by Loop-Quantum-G... | [
{
"created": "Mon, 2 May 2016 14:14:10 GMT",
"version": "v1"
}
] | 2017-01-25 | [
[
"Amelino-Camelia",
"Giovanni",
""
],
[
"da Silva",
"Malú Maira",
""
],
[
"Ronco",
"Michele",
""
],
[
"Cesarini",
"Lorenzo",
""
],
[
"Lecian",
"Orchidea Maria",
""
]
] | A recent study by Bojowald and Paily provided a path toward the identification of an effective quantum-spacetime picture of Loop Quantum Gravity, applicable in the "Minkowski regime", the regime where the large-scale (coarse-grained) spacetime metric is flat. A pivotal role in the analysis is played by Loop-Quantum-Gra... |
0709.0872 | Golam Mortuza Hossain | Martin Bojowald and Golam Mortuza Hossain | Cosmological vector modes and quantum gravity effects | 20 pages | Class.Quant.Grav.24:4801-4816,2007 | 10.1088/0264-9381/24/18/015 | IGPG-07/6-5 | gr-qc astro-ph hep-th | null | In contrast to scalar and tensor modes, vector modes of linear perturbations
around an expanding Friedmann--Robertson--Walker universe decay. This makes
them largely irrelevant for late time cosmology, assuming that all modes
started out at a similar magnitude at some early stage. By now, however,
bouncing models are... | [
{
"created": "Thu, 6 Sep 2007 14:33:31 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Bojowald",
"Martin",
""
],
[
"Hossain",
"Golam Mortuza",
""
]
] | In contrast to scalar and tensor modes, vector modes of linear perturbations around an expanding Friedmann--Robertson--Walker universe decay. This makes them largely irrelevant for late time cosmology, assuming that all modes started out at a similar magnitude at some early stage. By now, however, bouncing models are f... |
2204.06750 | Yun Soo Myung | Yun Soo Myung | Conditions for superradiant instability of the Kerr-Newman black holes | 15 pages, 7 figures, a version to appear in PRD | null | 10.1103/PhysRevD.105.124015 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find two conditions for superradiant instability of Kerr-Newman black
holes under a charged massive scalar perturbation by analyzing asymptotic
scalar potential and far-region wave function. Actually, they correspond to the
condition for getting a trapping well. Also, we obtain the conditions for
superradiant stab... | [
{
"created": "Thu, 14 Apr 2022 04:20:01 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Apr 2022 03:26:38 GMT",
"version": "v2"
},
{
"created": "Wed, 25 May 2022 21:57:12 GMT",
"version": "v3"
}
] | 2022-06-22 | [
[
"Myung",
"Yun Soo",
""
]
] | We find two conditions for superradiant instability of Kerr-Newman black holes under a charged massive scalar perturbation by analyzing asymptotic scalar potential and far-region wave function. Actually, they correspond to the condition for getting a trapping well. Also, we obtain the conditions for superradiant stabil... |
2204.08113 | Vilson T. Zanchin | Angel D. Masa and Vilson T. Zanchin | Rotating regular black holes and other compact objects with a Tolman
type potential as a regular interior for the Kerr metric | New references added, text improved | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain a new class of stationary axisymmetric spacetimes by using the
G\"urses-G\"ursey metric with an appropriate mass function in order to generate
a rotating core of matter that may be smoothly matched to the exterior Kerr
metric. The same stationary spacetimes may be obtained by applying a slightly
modified ve... | [
{
"created": "Mon, 18 Apr 2022 00:28:21 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Nov 2023 21:29:12 GMT",
"version": "v2"
}
] | 2023-11-10 | [
[
"Masa",
"Angel D.",
""
],
[
"Zanchin",
"Vilson T.",
""
]
] | We obtain a new class of stationary axisymmetric spacetimes by using the G\"urses-G\"ursey metric with an appropriate mass function in order to generate a rotating core of matter that may be smoothly matched to the exterior Kerr metric. The same stationary spacetimes may be obtained by applying a slightly modified vers... |
2107.09536 | Neev Khera | Neev Khera, Abhay Ashtekar, Badri Krishnan | Testing gravitational waveform models using angular momentum | 12 pages, 6 figures. Appendix B added to provide heat maps showing
the degree of violation of the angular momentum balance law in various
non-precessing and precessing models, as functions of the binary parameters | Phys. Rev. D104, 124071 (2021) | 10.1103/PhysRevD.104.124071 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The anticipated enhancements in detector sensitivity and the corresponding
increase in the number of gravitational wave detections will make it possible
to estimate parameters of compact binaries with greater accuracy assuming
general relativity(GR), and also to carry out sharper tests of GR itself.
Crucial to these ... | [
{
"created": "Tue, 20 Jul 2021 14:50:35 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Dec 2021 18:23:59 GMT",
"version": "v2"
}
] | 2021-12-30 | [
[
"Khera",
"Neev",
""
],
[
"Ashtekar",
"Abhay",
""
],
[
"Krishnan",
"Badri",
""
]
] | The anticipated enhancements in detector sensitivity and the corresponding increase in the number of gravitational wave detections will make it possible to estimate parameters of compact binaries with greater accuracy assuming general relativity(GR), and also to carry out sharper tests of GR itself. Crucial to these pr... |
2406.11626 | Tobias Weinzierl | Han Zhang (1 and 2), Baojiu Li (2), Tobias Weinzierl (1), Cristian
Barrera-Hinojosa (3) ((1) Department of Computer Science, Durham University,
(2) Institute for Computational Cosmology, Durham University (3) Instituto de
F\'isica y Astronom\'ia, Universidad de Valpara\'iso) | ExaGRyPE: Numerical General Relativity Solvers Based upon the Hyperbolic
PDEs Solver Engine ExaHyPE | null | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by-nc-nd/4.0/ | ExaGRyPE describes a suite of solvers for numerical relativity, based upon
ExaHyPE 2, the second generation of our Exascale Hyperbolic PDE Engine. The
presented generation of ExaGRyPE solves the Einstein equations in the CCZ4
formulation under a 3+1 foliation and focuses on black hole spacetimes. It
employs a block-s... | [
{
"created": "Mon, 17 Jun 2024 15:08:40 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Jun 2024 09:41:55 GMT",
"version": "v2"
}
] | 2024-06-19 | [
[
"Zhang",
"Han",
"",
"1 and 2"
],
[
"Li",
"Baojiu",
""
],
[
"Weinzierl",
"Tobias",
""
],
[
"Barrera-Hinojosa",
"Cristian",
""
]
] | ExaGRyPE describes a suite of solvers for numerical relativity, based upon ExaHyPE 2, the second generation of our Exascale Hyperbolic PDE Engine. The presented generation of ExaGRyPE solves the Einstein equations in the CCZ4 formulation under a 3+1 foliation and focuses on black hole spacetimes. It employs a block-str... |
1308.4306 | Oldrich Semerak | P. Sukov\'a, O. Semer\'ak | Free motion around black holes with discs or rings: between
integrability and chaos - III | 19 pages, 10 figures; accepted in MNRAS | MNRAS 436 (2013) 978-996 | 10.1093/mnras/stt1587 | null | gr-qc astro-ph.GA nlin.CD | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We continue the study of time-like geodesic dynamics in exact static, axially
and reflection symmetric space-times describing the fields of a Schwarzschild
black hole surrounded by thin discs or rings. In the first paper of this
series, the rise (and decline) of geodesic chaos with ring/disc mass and
position and wit... | [
{
"created": "Tue, 20 Aug 2013 13:31:55 GMT",
"version": "v1"
}
] | 2013-11-15 | [
[
"Suková",
"P.",
""
],
[
"Semerák",
"O.",
""
]
] | We continue the study of time-like geodesic dynamics in exact static, axially and reflection symmetric space-times describing the fields of a Schwarzschild black hole surrounded by thin discs or rings. In the first paper of this series, the rise (and decline) of geodesic chaos with ring/disc mass and position and with ... |
2207.11721 | Shu-Min Wu | Shu-Min Wu, Chun-Xu Wang, Dan-Dan Liu, Xiao-Li Huang, Hao-Sheng Zeng | Would quantum coherence be increased by curvature effect in de Sitter
space? | 24 pages, 5 figures | JHEP 02 (2023) 115 | 10.1007/JHEP02(2023)115 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | We study the quantum coherence in de Sitter space for the bipartite system of
Alice and Bob who initially share an entangled state between the two modes of a
free massive scalar field. It is shown that the space-curvature effect can
produce both local coherence and correlated coherence, leading to the increase
of the... | [
{
"created": "Sun, 24 Jul 2022 11:35:06 GMT",
"version": "v1"
},
{
"created": "Sun, 12 Feb 2023 08:25:04 GMT",
"version": "v2"
}
] | 2023-03-01 | [
[
"Wu",
"Shu-Min",
""
],
[
"Wang",
"Chun-Xu",
""
],
[
"Liu",
"Dan-Dan",
""
],
[
"Huang",
"Xiao-Li",
""
],
[
"Zeng",
"Hao-Sheng",
""
]
] | We study the quantum coherence in de Sitter space for the bipartite system of Alice and Bob who initially share an entangled state between the two modes of a free massive scalar field. It is shown that the space-curvature effect can produce both local coherence and correlated coherence, leading to the increase of the t... |
1007.4129 | Diego Pavon | Ninfa Radicella and Diego Pavon | On the $c^{2}$ term in the holographic formula for dark energy | 10 pages, 1 figure | JCAP 1010:005,2010 | 10.1088/1475-7516/2010/10/005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is argued that the $c^{2}$ term that appears in the conventional formula
for holographic dark energy should not be assumed constant in general.
Notwithstanding, there is at least an exception, namely, when the Ricci scale
is chosen as the infrared cutoff length.
| [
{
"created": "Fri, 23 Jul 2010 13:45:20 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Radicella",
"Ninfa",
""
],
[
"Pavon",
"Diego",
""
]
] | It is argued that the $c^{2}$ term that appears in the conventional formula for holographic dark energy should not be assumed constant in general. Notwithstanding, there is at least an exception, namely, when the Ricci scale is chosen as the infrared cutoff length. |
1407.8139 | Firmin Oliveira | Firmin J. Oliveira | Cosmological General Relativity With Scale Factor and Dark Energy | 28 pages, 9 figures, 1 table. The final publication is available at
springerlink.com | null | 10.1007/s10773-014-2138-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper the four-dimensional space-velocity Cosmological General
Relativity of Carmeli is developed by a general solution to the Einstein field
equations. The metric is given in the Tolman form and the vacuum mass density
is included in the energy-momentum tensor. The scale factor redshift equation
is obtained,... | [
{
"created": "Wed, 30 Jul 2014 17:41:07 GMT",
"version": "v1"
}
] | 2014-07-31 | [
[
"Oliveira",
"Firmin J.",
""
]
] | In this paper the four-dimensional space-velocity Cosmological General Relativity of Carmeli is developed by a general solution to the Einstein field equations. The metric is given in the Tolman form and the vacuum mass density is included in the energy-momentum tensor. The scale factor redshift equation is obtained, f... |
1310.3949 | Omid Jalili | O.Jalili, S.Rouhani and M.V.Takook | Gravitational wave detection by bounded cold electronic plasma in a long
pipe | 14 pages, 5 figures | International Journal of Theoretical Physics: Volume 49, Issue 1
(2010), Page 84 | 10.1007/s10773-009-0181-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We intend to propose an experimental sketch to detect gravitational waves
(GW) directly, using an cold electronic plasma in a long pipe. By considering
an cold electronic plasma in a long pipe, the Maxwell equations in 3+1
formalism will be invoked to relate gravitational waves to the perturbations of
plasma particle... | [
{
"created": "Tue, 15 Oct 2013 08:13:56 GMT",
"version": "v1"
}
] | 2015-06-17 | [
[
"Jalili",
"O.",
""
],
[
"Rouhani",
"S.",
""
],
[
"Takook",
"M. V.",
""
]
] | We intend to propose an experimental sketch to detect gravitational waves (GW) directly, using an cold electronic plasma in a long pipe. By considering an cold electronic plasma in a long pipe, the Maxwell equations in 3+1 formalism will be invoked to relate gravitational waves to the perturbations of plasma particles.... |
1808.01891 | Everton Murilo Carvalho Abreu | Everton M. C. Abreu, Jorge Ananias Neto, Albert C. R. Mendes and
Rodrigo M. de Paula | Loop Quantum Gravity Immirzi parameter and the Kaniadakis statistics | 7 pages. Preprint format | null | 10.1016/j.chaos.2018.11.033 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter we have shown that a possible connection between the LQG
Immirzi parameter and the area of a punctured surface can emerge depending on
the thermostatistics theory previously chosen. Starting from the
Boltzmann-Gibbs entropy, the Immirzi parameter can be reobtained. Using the
Kaniadakis statistics, whic... | [
{
"created": "Tue, 31 Jul 2018 19:29:06 GMT",
"version": "v1"
}
] | 2018-12-26 | [
[
"Abreu",
"Everton M. C.",
""
],
[
"Neto",
"Jorge Ananias",
""
],
[
"Mendes",
"Albert C. R.",
""
],
[
"de Paula",
"Rodrigo M.",
""
]
] | In this letter we have shown that a possible connection between the LQG Immirzi parameter and the area of a punctured surface can emerge depending on the thermostatistics theory previously chosen. Starting from the Boltzmann-Gibbs entropy, the Immirzi parameter can be reobtained. Using the Kaniadakis statistics, which ... |
1603.01221 | Niels Warburton | Samuel E. Gralla, Scott A. Hughes, Niels Warburton | Inspiral into Gargantua | 10 pages, 5 figures, updated to journal version | Class. Quant. Grav. 33 155002 (2016) | 10.1088/0264-9381/33/15/155002 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We model the inspiral of a compact object into a more massive black hole
rotating very near the theoretical maximum. We find that once the body enters
the near-horizon regime the gravitational radiation is characterized by a
constant frequency, equal to (twice) the horizon frequency, with an
exponentially damped prof... | [
{
"created": "Thu, 3 Mar 2016 18:54:59 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Sep 2016 20:45:13 GMT",
"version": "v2"
}
] | 2016-09-21 | [
[
"Gralla",
"Samuel E.",
""
],
[
"Hughes",
"Scott A.",
""
],
[
"Warburton",
"Niels",
""
]
] | We model the inspiral of a compact object into a more massive black hole rotating very near the theoretical maximum. We find that once the body enters the near-horizon regime the gravitational radiation is characterized by a constant frequency, equal to (twice) the horizon frequency, with an exponentially damped profil... |
2107.09800 | Jian-Hua He | Jian-Hua He | GWsim: a code to simulate gravitational waves propagating in a potential
well | 17 pages, 11 figures, substantial text overlap with arXiv:1912.00325,
accepted for publication in MNRAS | MNRAS, 506, 5278 (2021) | 10.1093/mnras/stab2080 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a code to simulate the propagation of GWs in a potential well in
the time domain. Our code uses the finite element method (FEM) based on the
publicly available code {\it deal.ii}. We test our code using a point source
monochromatic spherical wave. We examine not only the waveform observed by a
local observ... | [
{
"created": "Wed, 21 Jul 2021 00:52:04 GMT",
"version": "v1"
}
] | 2021-08-12 | [
[
"He",
"Jian-Hua",
""
]
] | We present a code to simulate the propagation of GWs in a potential well in the time domain. Our code uses the finite element method (FEM) based on the publicly available code {\it deal.ii}. We test our code using a point source monochromatic spherical wave. We examine not only the waveform observed by a local observer... |
1804.00594 | Fethi M. Ramazanoglu | Fethi M Ramazano\u{g}lu | Spontaneous growth of spinor fields in gravity | This version incorporates the corrections due to some missing terms
in the equations which were published in the erratum at
10.1103/PhysRevD.100.029903. Conclusions are unchanged | Phys. Rev. D 98, 044011 (2018) | 10.1103/PhysRevD.98.044011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that spinor fields nonminimally coupled to gravity can grow
spontaneously in the presence of matter. We name this phenomenon spontaneous
spinorization after the spontaneous scalarization scenario in scalar-tensor
theories. Underlying reason for the growth of the spinor is an instability
similar to the tachyon... | [
{
"created": "Mon, 2 Apr 2018 15:39:01 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Aug 2018 12:36:13 GMT",
"version": "v2"
},
{
"created": "Mon, 7 Oct 2019 14:24:03 GMT",
"version": "v3"
}
] | 2019-10-08 | [
[
"Ramazanoğlu",
"Fethi M",
""
]
] | We show that spinor fields nonminimally coupled to gravity can grow spontaneously in the presence of matter. We name this phenomenon spontaneous spinorization after the spontaneous scalarization scenario in scalar-tensor theories. Underlying reason for the growth of the spinor is an instability similar to the tachyon o... |
0708.2783 | Janusz Garecki Prof | Janusz Garecki | On Energy of the Friedman Universes in Conformally Flat Coordinates | 11 pages, no figures, Revtex4. Abstract extended. Acknowledgements
added. References added | Acta Phys.Polon.B39:781-797,2008 | null | null | gr-qc | null | Recently many authors have calculated the energy of the Friedman universes by
using double index energy-momentum complexes in Cartesian comoving coordinates
$(t,x,y,z)$ and concluded that the flat and closed Friedman universes are
energy-free. We show in this paper by using Einstein canonical energy-momentum
complex ... | [
{
"created": "Tue, 21 Aug 2007 12:53:32 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Aug 2007 12:45:14 GMT",
"version": "v2"
},
{
"created": "Mon, 3 Sep 2007 12:30:28 GMT",
"version": "v3"
},
{
"created": "Tue, 2 Oct 2007 11:58:35 GMT",
"version": "v4"
}
] | 2011-04-26 | [
[
"Garecki",
"Janusz",
""
]
] | Recently many authors have calculated the energy of the Friedman universes by using double index energy-momentum complexes in Cartesian comoving coordinates $(t,x,y,z)$ and concluded that the flat and closed Friedman universes are energy-free. We show in this paper by using Einstein canonical energy-momentum complex an... |
0807.0885 | Ming Lei Tong | Ming-lei Tong, Yang Zhang, Fang-Yu Li | Using polarized maser to detect high-frequency relic gravitational waves | 20 pages, 6 figures, accepted for Phys. Rev. D | Phys.Rev.D78:024041,2008 | 10.1103/PhysRevD.78.024041 | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/3.0/ | A GHz maser beam with Gaussian-type distribution passing through a homogenous
static magnetic field can be used to detect gravitational waves (GWs) with the
same frequency. The presence of GWs will perturb the electromagnetic (EM)
fields, giving rise to perturbed photon fluxes (PPFs). After being reflected by
a fract... | [
{
"created": "Sun, 6 Jul 2008 03:45:11 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Tong",
"Ming-lei",
""
],
[
"Zhang",
"Yang",
""
],
[
"Li",
"Fang-Yu",
""
]
] | A GHz maser beam with Gaussian-type distribution passing through a homogenous static magnetic field can be used to detect gravitational waves (GWs) with the same frequency. The presence of GWs will perturb the electromagnetic (EM) fields, giving rise to perturbed photon fluxes (PPFs). After being reflected by a fractal... |
2403.02119 | Jos\'e De Jes\'us Padua Arg\"uelles | Bianca Dittrich, Ted Jacobson, Jos\'e Padua-Arg\"uelles | De Sitter horizon entropy from a simplicial Lorentzian path integral | 24 pages, 12 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dimension of the Hilbert space of a quantum gravitational system can be
written formally as a path integral partition function over Lorentzian metrics.
We implement this in a 2+1 dimensional simplicial minisuperspace model in which
the system is a spatial topological disc, and recover by contour deformation
throu... | [
{
"created": "Mon, 4 Mar 2024 15:24:22 GMT",
"version": "v1"
}
] | 2024-03-05 | [
[
"Dittrich",
"Bianca",
""
],
[
"Jacobson",
"Ted",
""
],
[
"Padua-Argüelles",
"José",
""
]
] | The dimension of the Hilbert space of a quantum gravitational system can be written formally as a path integral partition function over Lorentzian metrics. We implement this in a 2+1 dimensional simplicial minisuperspace model in which the system is a spatial topological disc, and recover by contour deformation through... |
1410.5104 | Felipe Faria | F. F. Faria | Late cosmology in massive conformal gravity | v2: 11 pages, 1 figure, title changed, cosmological solutions added;
v3: 8 pages, major changes; v4: 11 pages, updated version; v5: title changed,
stability analysis included, matches the published version | Mod. Phys. Lett. A. 36, 2150115 (2021) | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we find the cosmological solutions of the massive conformal
gravity field equations in the presence of matter fields. In particular, we
show that the solution of negative curvature is in good agreement with the late
universe.
| [
{
"created": "Sun, 19 Oct 2014 19:10:09 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Sep 2015 04:11:04 GMT",
"version": "v2"
},
{
"created": "Mon, 14 Aug 2017 01:57:08 GMT",
"version": "v3"
},
{
"created": "Wed, 6 Mar 2019 01:59:39 GMT",
"version": "v4"
},
{
"cr... | 2021-06-14 | [
[
"Faria",
"F. F.",
""
]
] | In this paper we find the cosmological solutions of the massive conformal gravity field equations in the presence of matter fields. In particular, we show that the solution of negative curvature is in good agreement with the late universe. |
2203.13914 | Lavinia Heisenberg | Lavinia Heisenberg, Simon Kuhn and Laurens Walleghem | Wald's entropy in Coincident General Relativity | 30 pages | null | 10.1088/1361-6382/ac987d | null | gr-qc hep-th math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | The equivalence principle and its universality enables the geometrical
formulation of gravity. In the standard formulation of General Relativity \'a
la Einstein, the gravitational interaction is geometrized in terms of the
spacetime curvature. However, if we embrace the geometrical character of
gravity, two alternati... | [
{
"created": "Fri, 25 Mar 2022 21:17:32 GMT",
"version": "v1"
}
] | 2022-11-23 | [
[
"Heisenberg",
"Lavinia",
""
],
[
"Kuhn",
"Simon",
""
],
[
"Walleghem",
"Laurens",
""
]
] | The equivalence principle and its universality enables the geometrical formulation of gravity. In the standard formulation of General Relativity \'a la Einstein, the gravitational interaction is geometrized in terms of the spacetime curvature. However, if we embrace the geometrical character of gravity, two alternative... |
1602.04337 | Pedro Bicudo | Pedro Bicudo | Tighter bounds on a hypothetical graviton screening mass from the
gravitational wave observation GW150914 at LIGO | 6 pages, 1 figure, 1 table, new version with more clarified details
and references added | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | While quantum gravity is not solved yet, a screening mass for the graviton
remains theoretically possible. If such a mass would screen gravity at
distances of the order of the cluster galaxy radius, it could account for the
universe expansion. The modified Newtonian dynamics model also could be related
to a screening... | [
{
"created": "Sat, 13 Feb 2016 14:28:07 GMT",
"version": "v1"
},
{
"created": "Sun, 21 Feb 2016 00:30:51 GMT",
"version": "v2"
},
{
"created": "Tue, 29 Mar 2016 15:38:29 GMT",
"version": "v3"
}
] | 2016-03-30 | [
[
"Bicudo",
"Pedro",
""
]
] | While quantum gravity is not solved yet, a screening mass for the graviton remains theoretically possible. If such a mass would screen gravity at distances of the order of the cluster galaxy radius, it could account for the universe expansion. The modified Newtonian dynamics model also could be related to a screening g... |
gr-qc/0504147 | Hanno Sahlmann | Jerzy Lewandowski, Andrzej Okolow, Hanno Sahlmann and Thomas Thiemann | Uniqueness of diffeomorphism invariant states on holonomy-flux algebras | 38 pages, one figure. v2: Minor changes, final version, as published
in CMP | Commun.Math.Phys.267:703-733,2006 | 10.1007/s00220-006-0100-7 | AEI-2005-093, CGPG-04/5-3 | gr-qc hep-th math-ph math.MP | null | Loop quantum gravity is an approach to quantum gravity that starts from the
Hamiltonian formulation in terms of a connection and its canonical conjugate.
Quantization proceeds in the spirit of Dirac: First one defines an algebra of
basic kinematical observables and represents it through operators on a suitable
Hilber... | [
{
"created": "Fri, 29 Apr 2005 18:34:19 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Sep 2006 09:46:38 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Lewandowski",
"Jerzy",
""
],
[
"Okolow",
"Andrzej",
""
],
[
"Sahlmann",
"Hanno",
""
],
[
"Thiemann",
"Thomas",
""
]
] | Loop quantum gravity is an approach to quantum gravity that starts from the Hamiltonian formulation in terms of a connection and its canonical conjugate. Quantization proceeds in the spirit of Dirac: First one defines an algebra of basic kinematical observables and represents it through operators on a suitable Hilbert ... |
1912.10690 | Che-Yu Chen | Che-Yu Chen | Threshold of primordial black hole formation in
Eddington-inspired-Born-Infeld gravity | 14 pages, 1 figure. Updated to match the published version | Int.J.Mod.Phys.D 30 (2021) 02, 2150010 | 10.1142/S0218271821500103 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is believed that primordial black holes (PBHs), if they exist, can serve
as a powerful tool to probe the early stage of the cosmic history. Essentially,
in the radiation dominated universe, PBHs could form by the gravitational
collapse of overdense primordial perturbations produced during inflation. In
this pictur... | [
{
"created": "Mon, 23 Dec 2019 08:54:58 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Dec 2019 04:35:36 GMT",
"version": "v2"
},
{
"created": "Thu, 23 Apr 2020 09:55:22 GMT",
"version": "v3"
},
{
"created": "Wed, 10 Feb 2021 06:59:01 GMT",
"version": "v4"
}
] | 2021-02-11 | [
[
"Chen",
"Che-Yu",
""
]
] | It is believed that primordial black holes (PBHs), if they exist, can serve as a powerful tool to probe the early stage of the cosmic history. Essentially, in the radiation dominated universe, PBHs could form by the gravitational collapse of overdense primordial perturbations produced during inflation. In this picture,... |
2110.02353 | Gabriela Carvalho | G. C. Carvalho, M. E. X. Guimar\~aes, P. O. Mesquita and J. L. Neto | Formation and Evolution of Wakes in the Spacetime Generated by a Cosmic
String in $f(R)$ Theory of Gravity | null | Journal of High Energy Physics, Gravitation and Cosmology 2021 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The formation and evolution of cosmic string wakes in the framework of a
$f(R)$ theory of gravity are investigated in this work. We consider a simple
model in which baryonic matter flows past a cosmic string. We treat this
problem in the Zel'dovich approximation. We compare our results with previous
results obtained ... | [
{
"created": "Tue, 5 Oct 2021 20:48:59 GMT",
"version": "v1"
}
] | 2021-10-07 | [
[
"Carvalho",
"G. C.",
""
],
[
"Guimarães",
"M. E. X.",
""
],
[
"Mesquita",
"P. O.",
""
],
[
"Neto",
"J. L.",
""
]
] | The formation and evolution of cosmic string wakes in the framework of a $f(R)$ theory of gravity are investigated in this work. We consider a simple model in which baryonic matter flows past a cosmic string. We treat this problem in the Zel'dovich approximation. We compare our results with previous results obtained in... |
1402.0261 | Friedrich W. Hehl | Friedrich W. Hehl (Cologne and Columbia, MO) | On energy-momentum and spin/helicity of quark and gluon fields | 10 pages latex. Invited talk delivered at the XV Workshop on High
Energy Spin Physics `DSPIN-13' in Dubna, Russia, 08--12 October 2013 | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In special relativity, quantum matter can be classified according to
mass-energy and spin. The corresponding field-theoretical notions are the
energy-momentum-stress tensor T and the spin angular momentum tensor S. Since
each object in physics carries energy and, if fermionic, also spin, the notions
of T and S can be... | [
{
"created": "Sun, 2 Feb 2014 23:32:10 GMT",
"version": "v1"
}
] | 2014-02-04 | [
[
"Hehl",
"Friedrich W.",
"",
"Cologne and Columbia, MO"
]
] | In special relativity, quantum matter can be classified according to mass-energy and spin. The corresponding field-theoretical notions are the energy-momentum-stress tensor T and the spin angular momentum tensor S. Since each object in physics carries energy and, if fermionic, also spin, the notions of T and S can be s... |
1108.2650 | Aharon Davidson | Aharon Davidson | Holographic Shell Model: Stack Data Structure inside Black Holes | 4 pages, 3 figures | Int. J. Mod. Phys. D, 23, 1450041 (2014) | 10.1142/S0218271814500412 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We suggest that bits of information inhabit, universally and holographically,
the entire black hole interior, a bit per a light sheet unit interval of order
Planck area difference. The number of distinguishable (tagged by a binary code)
configurations, counted within the context of a discrete holographic shell
model,... | [
{
"created": "Fri, 12 Aug 2011 16:00:29 GMT",
"version": "v1"
}
] | 2015-03-19 | [
[
"Davidson",
"Aharon",
""
]
] | We suggest that bits of information inhabit, universally and holographically, the entire black hole interior, a bit per a light sheet unit interval of order Planck area difference. The number of distinguishable (tagged by a binary code) configurations, counted within the context of a discrete holographic shell model, i... |
1210.6833 | Laszlo Arpad Gergely | Marek Dwornik, Zolt\'an Keresztes, L\'aszl\'o \'Arp\'ad Gergely | Modified gravity theories and dark matter models tested by galactic
rotation curves | submitted to the proceedings of the conference on Relativity and
Gravitation: 100 Years after Einstein in Prague | Springer Proceedings in Physics 157, 427-430 (2014) | 10.1007/978-3-319-06761-2_59 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bose-Einstein condensate dark matter model and Randall-Sundrum type 2
brane-world theory are tested with galactic rotation curves. Analytical
expressions are derived for the rotational velocities of test particles around
the galactic center in both cases. The velocity profiles are fitted to the
observed rotation curv... | [
{
"created": "Thu, 25 Oct 2012 13:39:48 GMT",
"version": "v1"
}
] | 2014-09-12 | [
[
"Dwornik",
"Marek",
""
],
[
"Keresztes",
"Zoltán",
""
],
[
"Gergely",
"László Árpád",
""
]
] | Bose-Einstein condensate dark matter model and Randall-Sundrum type 2 brane-world theory are tested with galactic rotation curves. Analytical expressions are derived for the rotational velocities of test particles around the galactic center in both cases. The velocity profiles are fitted to the observed rotation curve ... |
1812.01809 | Carlos A. S. Almeida | L. J. S. Sousa, J. E. G. Silva, W. T. Cruz and C. A. S. Almeida | Geometric standing wave braneworld and field localization in Lyra
manifold | 16 pages, 1 figure | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we propose a standing wave braneworld based on Lyra geometry
scenario. The Lyra displacement vector provides a modification in Einstein
equations which can be interpreted as a noninteracting phantom scalar. From the
Einstein's equation in Lyra manifold, a 5D standing wave braneworld is
constructed in th... | [
{
"created": "Wed, 5 Dec 2018 04:02:44 GMT",
"version": "v1"
}
] | 2018-12-06 | [
[
"Sousa",
"L. J. S.",
""
],
[
"Silva",
"J. E. G.",
""
],
[
"Cruz",
"W. T.",
""
],
[
"Almeida",
"C. A. S.",
""
]
] | In this work, we propose a standing wave braneworld based on Lyra geometry scenario. The Lyra displacement vector provides a modification in Einstein equations which can be interpreted as a noninteracting phantom scalar. From the Einstein's equation in Lyra manifold, a 5D standing wave braneworld is constructed in the ... |
2112.06821 | Eirini C. Telali | Eirini C. Telali, Emmanuel N. Saridakis | Power-law holographic dark energy and cosmology | 6 pages, 3 figures | null | 10.1140/epjc/s10052-022-10411-z | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We formulate power-law holographic dark energy, which is a modified
holographic dark energy model based on the extended entropy relation arising
from the consideration of state mixing between the ground and the excited ones
in the calculation of the entanglement entropy. We construct two cases of the
scenario, imposi... | [
{
"created": "Mon, 13 Dec 2021 17:33:30 GMT",
"version": "v1"
},
{
"created": "Tue, 24 May 2022 08:41:18 GMT",
"version": "v2"
}
] | 2022-05-25 | [
[
"Telali",
"Eirini C.",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We formulate power-law holographic dark energy, which is a modified holographic dark energy model based on the extended entropy relation arising from the consideration of state mixing between the ground and the excited ones in the calculation of the entanglement entropy. We construct two cases of the scenario, imposing... |
1801.05843 | Zachary Fifer | Zack Fifer, Theo Torres, Sebastian Erne, Anastasios Avgoustidis,
Richard J. A. Hill, and Silke Weinfurtner | Mimicking inflation with 2-fluid systems in a strong gradient magnetic
field | 6 pages, 3 figures | Phys. Rev. E 99, 031101 (2019) | 10.1103/PhysRevE.99.031101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the standard cosmological picture the Universe underwent a brief period of
near-exponential expansion, known as Inflation. This provides an explanation
for structure formation through the amplification of perturbations by the rapid
expansion of the fabric of space. Although this mech- anism is theoretically
well u... | [
{
"created": "Wed, 17 Jan 2018 19:47:55 GMT",
"version": "v1"
}
] | 2019-04-03 | [
[
"Fifer",
"Zack",
""
],
[
"Torres",
"Theo",
""
],
[
"Erne",
"Sebastian",
""
],
[
"Avgoustidis",
"Anastasios",
""
],
[
"Hill",
"Richard J. A.",
""
],
[
"Weinfurtner",
"Silke",
""
]
] | In the standard cosmological picture the Universe underwent a brief period of near-exponential expansion, known as Inflation. This provides an explanation for structure formation through the amplification of perturbations by the rapid expansion of the fabric of space. Although this mech- anism is theoretically well und... |
1505.00714 | Hirotaka Yoshino | Hirotaka Yoshino, Hideo Kodama | Bosenova and Axiverse | 56 pages, 30 figures, Invited contribution to the Focus Issue on
"Black holes and fundamental fields" to appear in Classical and Quantum
Gravity | Class. Quantum Grav. 32 (2015) 214001 | 10.1088/0264-9381/32/21/214001 | KEK-TH-1820, KEK-Cosmo-169 | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report some new interesting features of the dynamics of a string axion
field (i.e., a (pseudo-)scalar field with tiny mass with sine-Gordon-type
self-interaction) around a rotating black hole in three respects. First, we
revisit the calculation of the growth rate of superradiant instability, and
show that in some ... | [
{
"created": "Mon, 4 May 2015 17:03:43 GMT",
"version": "v1"
}
] | 2015-10-19 | [
[
"Yoshino",
"Hirotaka",
""
],
[
"Kodama",
"Hideo",
""
]
] | We report some new interesting features of the dynamics of a string axion field (i.e., a (pseudo-)scalar field with tiny mass with sine-Gordon-type self-interaction) around a rotating black hole in three respects. First, we revisit the calculation of the growth rate of superradiant instability, and show that in some ca... |
1807.09787 | Adam Rebei | Adam Rebei, E. A. Huerta, Sibo Wang, Sarah Habib, Roland Haas, Daniel
Johnson, Daniel George | Fusing numerical relativity and deep learning to detect higher-order
multipole waveforms from eccentric binary black hole mergers | 17 pages, 11 figures, 1 appendix, accepted to Phys. Rev. D | Phys. Rev. D 100, 044025 (2019) | 10.1103/PhysRevD.100.044025 | null | gr-qc astro-ph.HE physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We determine the mass-ratio, eccentricity and binary inclination angles that
maximize the contribution of the higher-order waveform multipoles $(\ell, \,
|m|)= \{(2,\,2),\, (2,\,1),\, (3,\,3),\, (3,\,2), \, (3,\,1),\, (4,\,4),\,
(4,\,3),\, (4,\,2),\,(4,\,1)\}$ for the gravitational wave detection of
eccentric binary ... | [
{
"created": "Wed, 25 Jul 2018 18:00:05 GMT",
"version": "v1"
},
{
"created": "Thu, 15 Aug 2019 20:47:44 GMT",
"version": "v2"
}
] | 2019-08-19 | [
[
"Rebei",
"Adam",
""
],
[
"Huerta",
"E. A.",
""
],
[
"Wang",
"Sibo",
""
],
[
"Habib",
"Sarah",
""
],
[
"Haas",
"Roland",
""
],
[
"Johnson",
"Daniel",
""
],
[
"George",
"Daniel",
""
]
] | We determine the mass-ratio, eccentricity and binary inclination angles that maximize the contribution of the higher-order waveform multipoles $(\ell, \, |m|)= \{(2,\,2),\, (2,\,1),\, (3,\,3),\, (3,\,2), \, (3,\,1),\, (4,\,4),\, (4,\,3),\, (4,\,2),\,(4,\,1)\}$ for the gravitational wave detection of eccentric binary bl... |
1103.4121 | Mona Kamal | M. I. Wanas and Mona M. Kamal | An AP-Structure with Finslerian Flavor II: Torsion, Curvature and Other
Objects | 15 pages, LaTeX file, revised version, Journal reference inserted | Mod.Phys.Lett.A26:2065-2078,2011 | 10.1142/S021773231103653X | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An absolute parallelism (AP-) space having Finslerian properties is called
FAP-space. This FAP-structure is more wider than both conventional AP and
Finsler structures. In the present work, more geometric objects as curvature
and torsion tensors are derived in the context of this structure. Also second
order tensors,... | [
{
"created": "Mon, 21 Mar 2011 19:42:02 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Sep 2011 10:05:42 GMT",
"version": "v2"
}
] | 2011-09-15 | [
[
"Wanas",
"M. I.",
""
],
[
"Kamal",
"Mona M.",
""
]
] | An absolute parallelism (AP-) space having Finslerian properties is called FAP-space. This FAP-structure is more wider than both conventional AP and Finsler structures. In the present work, more geometric objects as curvature and torsion tensors are derived in the context of this structure. Also second order tensors, u... |
1110.1018 | Miguel Socolovsky | Miguel Socolovsky | Fibre bundles, connections, general relativity, and Einstein-Cartan
theory | 60 pages | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present in the most natural way, that is, in the context of the theory of
vector and principal bundles and connections in them, fundamental geometrical
concepts related to General Relativity and one of its extensions, the
Einstein-Cartan theory.
| [
{
"created": "Wed, 5 Oct 2011 15:12:15 GMT",
"version": "v1"
}
] | 2015-03-13 | [
[
"Socolovsky",
"Miguel",
""
]
] | We present in the most natural way, that is, in the context of the theory of vector and principal bundles and connections in them, fundamental geometrical concepts related to General Relativity and one of its extensions, the Einstein-Cartan theory. |
1602.01152 | George F. Chapline | George Chapline and James Barbieri | Was there a negative vacuum energy in your past? | 16 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A model for gravitational collapse where the event horizon is a quantum
critical phase transition is extended to provide an explanation for the origin
of the observable universe, where the expanding universe that we observe today
was proceeded by a flat universe with a negative cosmological constant. In
principal thi... | [
{
"created": "Tue, 2 Feb 2016 23:12:25 GMT",
"version": "v1"
},
{
"created": "Sat, 6 Feb 2016 01:57:57 GMT",
"version": "v2"
}
] | 2016-02-09 | [
[
"Chapline",
"George",
""
],
[
"Barbieri",
"James",
""
]
] | A model for gravitational collapse where the event horizon is a quantum critical phase transition is extended to provide an explanation for the origin of the observable universe, where the expanding universe that we observe today was proceeded by a flat universe with a negative cosmological constant. In principal this ... |
2310.12138 | Dallas DeGan | Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven
Arzoumanian, Jeremy Baier, Paul T. Baker, Bence B\'ecsy, Laura Blecha, Adam
Brazier, Paul R. Brook, Sarah Burke-Spolaor, Rand Burnette, Robin Case, J.
Andrew Casey-Clyde, Maria Charisi, Shami Chatterjee, Tyler Cohen, James M.
Cordes, Neil J. Cornish... | The NANOGrav 15-year data set: Search for Transverse Polarization Modes
in the Gravitational-Wave Background | 11 pages, 5 figures | null | null | null | gr-qc astro-ph.GA astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Recently we found compelling evidence for a gravitational wave background
with Hellings and Downs (HD) correlations in our 15-year data set. These
correlations describe gravitational waves as predicted by general relativity,
which has two transverse polarization modes. However, more general metric
theories of gravity... | [
{
"created": "Wed, 18 Oct 2023 17:49:33 GMT",
"version": "v1"
}
] | 2023-10-19 | [
[
"Agazie",
"Gabriella",
""
],
[
"Anumarlapudi",
"Akash",
""
],
[
"Archibald",
"Anne M.",
""
],
[
"Arzoumanian",
"Zaven",
""
],
[
"Baier",
"Jeremy",
""
],
[
"Baker",
"Paul T.",
""
],
[
"Bécsy",
"Bence",
""
... | Recently we found compelling evidence for a gravitational wave background with Hellings and Downs (HD) correlations in our 15-year data set. These correlations describe gravitational waves as predicted by general relativity, which has two transverse polarization modes. However, more general metric theories of gravity c... |
0712.4301 | J. Ponce de Leon | J. Ponce de Leon | Embeddings for 4D Einstein equations with a cosmological constant | null | Grav.Cosmol.14:241-247,2008 | 10.1134/S0202289308030067 | null | gr-qc | null | There are many ways of embedding a 4D spacetime in a given higher-dimensional
manifold while, satisfying the field equations. In this work we extend and
generalize a recent paper by Mashhoon and Wesson ({\it Gen. Rel. Gravit.} {\bf
39}, 1403(2007)) by showing different ways of embedding a solution of the 4D
Einstein ... | [
{
"created": "Fri, 28 Dec 2007 01:43:28 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Dec 2007 02:23:54 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"de Leon",
"J. Ponce",
""
]
] | There are many ways of embedding a 4D spacetime in a given higher-dimensional manifold while, satisfying the field equations. In this work we extend and generalize a recent paper by Mashhoon and Wesson ({\it Gen. Rel. Gravit.} {\bf 39}, 1403(2007)) by showing different ways of embedding a solution of the 4D Einstein eq... |
2204.05996 | Jainendra Kumar Singh Dr. | Ashima Sood, Arun Kumar, J. K. Singh and Sushant G. Ghosh | Thermodynamic stability and P-V criticality of nonsingular-AdS black
holes endowed with clouds of strings | 12 pages, 16 figures | European Physical Journal C, (2022) 82:227 | 10.1140/epjc/s10052-022-10181-8 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We investigate the extended phase space thermodynamics of nonsingular-AdS
black holes minimally coupled to clouds of strings in which we consider the
cosmological constant ($\Lambda$) as the pressure ($P$) of the black holes and
its conjugate variable thermodynamical volume ($V$) of the black holes. Owing
to the back... | [
{
"created": "Tue, 12 Apr 2022 12:04:06 GMT",
"version": "v1"
}
] | 2022-04-14 | [
[
"Sood",
"Ashima",
""
],
[
"Kumar",
"Arun",
""
],
[
"Singh",
"J. K.",
""
],
[
"Ghosh",
"Sushant G.",
""
]
] | We investigate the extended phase space thermodynamics of nonsingular-AdS black holes minimally coupled to clouds of strings in which we consider the cosmological constant ($\Lambda$) as the pressure ($P$) of the black holes and its conjugate variable thermodynamical volume ($V$) of the black holes. Owing to the backgr... |
gr-qc/0607088 | Christian Boehmer | Christian G. Boehmer | The Einstein-Cartan-Elko system | 12 pages, no figures | AnnalenPhys.16:38-44,2007 | 10.1002/andp.200610216 | null | gr-qc hep-th | null | The present paper analyses the Einstein-Cartan theory of gravitation with
Elko spinors as sources of curvature and torsion. After minimally coupling the
Elko spinors to torsion, the spin angular momentum tensor is derived and its
structure is discussed. It shows a much richer structure than the Dirac
analogue and hen... | [
{
"created": "Fri, 21 Jul 2006 14:30:50 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Boehmer",
"Christian G.",
""
]
] | The present paper analyses the Einstein-Cartan theory of gravitation with Elko spinors as sources of curvature and torsion. After minimally coupling the Elko spinors to torsion, the spin angular momentum tensor is derived and its structure is discussed. It shows a much richer structure than the Dirac analogue and hence... |
gr-qc/9812091 | Mark D. Roberts | Mark D. Roberts | Non Metric Mass | 37 pages, no diagrams, LaTex2e | null | null | null | gr-qc hep-th | null | In general relativity g_ab;c=0 implies that the wave equation
(\Box^2-M)g_ab=0 always has M=0. If the underlying geometry is generalized to
include non-metricity this incurs M \neq 0, and the above wave equation can be
rewritten as M(x)+\td{\na}_a Q_.^a+(\ep+\fr{d}{2}-2)Q_a Q_.^a=0, where \ep=0,
1, 2, or 3, d is the ... | [
{
"created": "Tue, 29 Dec 1998 16:49:17 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Dec 1998 14:27:52 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Roberts",
"Mark D.",
""
]
] | In general relativity g_ab;c=0 implies that the wave equation (\Box^2-M)g_ab=0 always has M=0. If the underlying geometry is generalized to include non-metricity this incurs M \neq 0, and the above wave equation can be rewritten as M(x)+\td{\na}_a Q_.^a+(\ep+\fr{d}{2}-2)Q_a Q_.^a=0, where \ep=0, 1, 2, or 3, d is the di... |
1509.06967 | S Habib Mazharimousavi | Z. Amirabi, M. Halilsoy and S. Habib Mazharimousavi | Generation of spherically symmetric metrics in $f\left( R\right) $
gravity | 8 pages, no figure, revised version accepted for publication in EPJC | Eur. Phys. J. C 76, 338 (2016) | 10.1140/epjc/s10052-016-4164-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In $D-$dimensional spherically symmetric $f\left( R\right) $ gravity there
are three unknown functions to be determined from the fourth order differential
equations. It is shown that the system remarkably integrates to relate two
functions through the third one to provide reduction to second order equations
accompani... | [
{
"created": "Wed, 16 Sep 2015 09:03:55 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Sep 2015 07:59:55 GMT",
"version": "v2"
},
{
"created": "Mon, 30 May 2016 06:05:49 GMT",
"version": "v3"
}
] | 2016-06-23 | [
[
"Amirabi",
"Z.",
""
],
[
"Halilsoy",
"M.",
""
],
[
"Mazharimousavi",
"S. Habib",
""
]
] | In $D-$dimensional spherically symmetric $f\left( R\right) $ gravity there are three unknown functions to be determined from the fourth order differential equations. It is shown that the system remarkably integrates to relate two functions through the third one to provide reduction to second order equations accompanied... |
0709.1603 | Jose Geraldo Pereira | R. Aldrovandi, J. G. Pereira, K. H. Vu | The Nonlinear Essence of Gravitational Waves | Plain Latex, 13 pages, no figures. Accepted for publication in
Foundations of Physiscs | Found.Phys.37:1503-1517,2007 | 10.1007/s10701-007-9180-2 | null | gr-qc hep-th | null | A critical review of gravitational wave theory is made. It is pointed out
that the usual linear approach to the gravitational wave theory is neither
conceptually consistent nor mathematically justified. Relying upon that
analysis it is then argued that -- analogously to a Yang-Mills propagating
field, which must be n... | [
{
"created": "Tue, 11 Sep 2007 12:33:40 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Aldrovandi",
"R.",
""
],
[
"Pereira",
"J. G.",
""
],
[
"Vu",
"K. H.",
""
]
] | A critical review of gravitational wave theory is made. It is pointed out that the usual linear approach to the gravitational wave theory is neither conceptually consistent nor mathematically justified. Relying upon that analysis it is then argued that -- analogously to a Yang-Mills propagating field, which must be non... |
1911.04482 | Alexander Oliveros < | A. Oliveros and Mario A. Acero | Inflation driven by a holographic energy density | 7 pages, 2 figures, references added, minor changes, accepted for
publication in EPL | EPL 128 (2019) 5, 59001 | 10.1209/0295-5075/128/59001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter we study a model of inflation in which the inflationary
regimen comes from a type of holographic energy density. In particular, we
consider the Granda-Oliveros proposal for the holographic energy density, which
contains two free dimensionless parameters, $\alpha$ and $\beta$. This
holographic energy de... | [
{
"created": "Mon, 11 Nov 2019 13:42:10 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Jan 2020 19:26:52 GMT",
"version": "v2"
}
] | 2023-02-15 | [
[
"Oliveros",
"A.",
""
],
[
"Acero",
"Mario A.",
""
]
] | In this letter we study a model of inflation in which the inflationary regimen comes from a type of holographic energy density. In particular, we consider the Granda-Oliveros proposal for the holographic energy density, which contains two free dimensionless parameters, $\alpha$ and $\beta$. This holographic energy dens... |
2303.12656 | Mohamed Ould El Hadj | Mohamed Ould El Hadj | Scattering and conversion of electromagnetic and gravitational waves by
Reissner-Nordstr\"om black holes: The Regge pole description | v2: minor changes and a few typos corrected in the text to match the
published version | Phys. Rev. D 107, 104051 (2023) | 10.1103/PhysRevD.107.104051 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the problem of scattering and conversion of monochromatic
planar gravitational and electromagnetic waves impinging upon a
Reissner-Nordstr\"om black hole using a Regge pole description, i.e., a complex
angular momentum approach. For this purpose, we first compute numerically the
Regge pole spectrum for... | [
{
"created": "Wed, 22 Mar 2023 15:34:16 GMT",
"version": "v1"
},
{
"created": "Thu, 25 May 2023 14:16:26 GMT",
"version": "v2"
}
] | 2023-05-26 | [
[
"Hadj",
"Mohamed Ould El",
""
]
] | We investigate the problem of scattering and conversion of monochromatic planar gravitational and electromagnetic waves impinging upon a Reissner-Nordstr\"om black hole using a Regge pole description, i.e., a complex angular momentum approach. For this purpose, we first compute numerically the Regge pole spectrum for v... |
1006.4806 | Sunil Maharaj | S. Thirukkanesh, S. D. Maharaj | Mixed potentials in radiative stellar collapse | 10 pages, To appear in J. Math. Phys | J.Math.Phys.51:072502,2010 | 10.1063/1.3456081 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the behaviour of a radiating star when the interior expanding,
shearing fluid particles are traveling in geodesic motion. We demonstrate that
it is possible to obtain new classes of exact solutions in terms of elementary
functions without assuming a separable form for the gravitational potentials or
initiall... | [
{
"created": "Thu, 24 Jun 2010 14:50:27 GMT",
"version": "v1"
}
] | 2011-08-23 | [
[
"Thirukkanesh",
"S.",
""
],
[
"Maharaj",
"S. D.",
""
]
] | We study the behaviour of a radiating star when the interior expanding, shearing fluid particles are traveling in geodesic motion. We demonstrate that it is possible to obtain new classes of exact solutions in terms of elementary functions without assuming a separable form for the gravitational potentials or initially ... |
0806.3066 | Nicoleta Brinzei | Sergey Siparov (1), Nicoleta Brinzei (2) ((1) State University of
civil aviation, St-Petersburg, Russia, (2) "Transilvania" University, Brasov,
Romania) | Space-time anisotropy: theoretical issues and the possibility of an
observational test | 17 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The specific astrophysical data collected during the last decade causes the
need for the modification of the expression for the Einstein-Hilbert action,
and several attempts sufficing this need are known. The modification suggested
in this paper stems from the possible anisotropy of space-time and this means
the natu... | [
{
"created": "Wed, 18 Jun 2008 19:04:04 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Aug 2008 16:59:59 GMT",
"version": "v2"
}
] | 2012-07-04 | [
[
"Siparov",
"Sergey",
""
],
[
"Brinzei",
"Nicoleta",
""
]
] | The specific astrophysical data collected during the last decade causes the need for the modification of the expression for the Einstein-Hilbert action, and several attempts sufficing this need are known. The modification suggested in this paper stems from the possible anisotropy of space-time and this means the natura... |
1804.05883 | Changqing Liu Lcqliu | Changqing Liu, Chikun Ding, Jiliang Jing | Periodic orbits around Kerr Sen black holes | 14 pages 8 figures | Commun. Theor. Phys. 71 (12), 1461, 2019 | 10.1088/0253-6102/71/12/1461 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate periodic orbits and zoom-whirl behaviors around a Kerr Sen
black hole with a rational number $q$ in terms of three integers $(z,w,v)$,
from which one can immediately read off the number of leaves(or zooms), the
ordering of the leaves, and the number of whirls. The characteristic of
zoom-whirl periodic ... | [
{
"created": "Mon, 16 Apr 2018 18:29:50 GMT",
"version": "v1"
},
{
"created": "Sat, 23 Nov 2019 01:58:51 GMT",
"version": "v2"
}
] | 2019-12-10 | [
[
"Liu",
"Changqing",
""
],
[
"Ding",
"Chikun",
""
],
[
"Jing",
"Jiliang",
""
]
] | We investigate periodic orbits and zoom-whirl behaviors around a Kerr Sen black hole with a rational number $q$ in terms of three integers $(z,w,v)$, from which one can immediately read off the number of leaves(or zooms), the ordering of the leaves, and the number of whirls. The characteristic of zoom-whirl periodic or... |
1604.06576 | J.J.L. Velazquez | Alan D. Rendall and Juan J. L. Vel\'azquez | Veiled singularities for the spherically symmetric massless
Einstein-Vlasov system | 67 pages, 1 figure | null | 10.1007/s00023-017-0607-9 | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper continues the investigation of the formation of naked
singularities in the collapse of collisionless matter initiated in [RV]. There
the existence of certain classes of non-smooth solutions of the Einstein-Vlasov
system was proved. Those solutions are self-similar and hence not
asymptotically flat. To obta... | [
{
"created": "Fri, 22 Apr 2016 08:58:51 GMT",
"version": "v1"
}
] | 2018-03-28 | [
[
"Rendall",
"Alan D.",
""
],
[
"Velázquez",
"Juan J. L.",
""
]
] | This paper continues the investigation of the formation of naked singularities in the collapse of collisionless matter initiated in [RV]. There the existence of certain classes of non-smooth solutions of the Einstein-Vlasov system was proved. Those solutions are self-similar and hence not asymptotically flat. To obtain... |
gr-qc/0703121 | Roy Maartens | George Ellis, Roy Maartens, Malcolm MacCallum | Causality and the speed of sound | v2: additional discussion on models that appear to have superluminal
signal speeds; version to appear in GRG | Gen.Rel.Grav.39:1651-1660,2007 | 10.1007/s10714-007-0479-2 | null | gr-qc astro-ph hep-th | null | A usual causal requirement on a viable theory of matter is that the speed of
sound be at most the speed of light. In view of various recent papers querying
this limit, the question is revisited here. We point to various issues
confronting theories that violate the usual constraint.
| [
{
"created": "Sun, 25 Mar 2007 20:20:00 GMT",
"version": "v1"
},
{
"created": "Tue, 29 May 2007 12:16:24 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Ellis",
"George",
""
],
[
"Maartens",
"Roy",
""
],
[
"MacCallum",
"Malcolm",
""
]
] | A usual causal requirement on a viable theory of matter is that the speed of sound be at most the speed of light. In view of various recent papers querying this limit, the question is revisited here. We point to various issues confronting theories that violate the usual constraint. |
1505.01990 | Izzet Sakalli | I. Sakalli and H. Gursel | Quantum tunneling from rotating black holes with scalar hair in three
dimensions | null | European Physical Journal C Volume: 76 Issue: 6 Article Number:
318 (2016) | 10.1140/epjc/s10052-016-4158-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Hawking radiation (HR) of scalar and Dirac particles (fermions)
emitted from a rotating scalar hair black hole (RSHBH) within the context of
three dimensional ($3D$) Einstein gravity using non-minimally coupled scalar
field theory. Amalgamating the quantum tunneling approach with the
Wentzel--Kramers--Br... | [
{
"created": "Fri, 8 May 2015 10:49:02 GMT",
"version": "v1"
}
] | 2016-10-24 | [
[
"Sakalli",
"I.",
""
],
[
"Gursel",
"H.",
""
]
] | We study the Hawking radiation (HR) of scalar and Dirac particles (fermions) emitted from a rotating scalar hair black hole (RSHBH) within the context of three dimensional ($3D$) Einstein gravity using non-minimally coupled scalar field theory. Amalgamating the quantum tunneling approach with the Wentzel--Kramers--Bril... |
2312.07486 | Stylianos A. Tsilioukas | Stylianos A. Tsilioukas, Emmanuel N. Saridakis, Charalampos Tzerefos | Dark energy from topology change induced by microscopic Gauss-Bonnet
wormholes | 9 pages, 1 figure, version to appear in Phys. Rev. D | Phys.Rev.D 109 (2024), 084010 | 10.1103/PhysRevD.109.084010 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that the appearance of microscopic objects with distinct
topologies and different Euler characteristics, such as instatons and
wormholes, at the spacetime-foam level in Euclidean quantum gravity approaches,
leads to spacetime topology changes. Such changes, in principle, may affect the
field equations tha... | [
{
"created": "Tue, 12 Dec 2023 18:21:41 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Feb 2024 14:54:28 GMT",
"version": "v2"
}
] | 2024-04-08 | [
[
"Tsilioukas",
"Stylianos A.",
""
],
[
"Saridakis",
"Emmanuel N.",
""
],
[
"Tzerefos",
"Charalampos",
""
]
] | It is known that the appearance of microscopic objects with distinct topologies and different Euler characteristics, such as instatons and wormholes, at the spacetime-foam level in Euclidean quantum gravity approaches, leads to spacetime topology changes. Such changes, in principle, may affect the field equations that ... |
2102.09456 | Orfeu Bertolami | Orfeu Bertolami | Inflation, phase transitions and the cosmological constant | 9 pages. Version to match to one to be published in General
Relativity and Gravitation | null | 10.1007/s10714-021-02877-1 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Cosmological phase transitions are thought to have taken place at the early
Universe imprinting their properties on the observable Universe. There is
strong evidence that, through the dynamics of a scalar field that lead a second
order phase transition, inflation shaped the Universe accounting for the most
conspicuou... | [
{
"created": "Wed, 17 Feb 2021 14:52:01 GMT",
"version": "v1"
},
{
"created": "Sat, 15 May 2021 09:32:28 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Nov 2021 18:21:39 GMT",
"version": "v3"
}
] | 2021-12-08 | [
[
"Bertolami",
"Orfeu",
""
]
] | Cosmological phase transitions are thought to have taken place at the early Universe imprinting their properties on the observable Universe. There is strong evidence that, through the dynamics of a scalar field that lead a second order phase transition, inflation shaped the Universe accounting for the most conspicuous ... |
1807.01381 | Lee Smolin | Stephon Alexander, Joao Magueijo and Lee Smolin | The quantum cosmological constant | 15 pages. no figures, minor improvments | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an extension of general relativity in which the cosmological
constant becomes dynamical and turns out to be conjugate to the Chern-Simons
invariant of the Ashtekar connection on a spatial slicing. The latter has been
proposed in \cite{Chopin-Lee} as a time variable for quantum gravity: the
Chern-Simons tim... | [
{
"created": "Tue, 3 Jul 2018 21:58:47 GMT",
"version": "v1"
},
{
"created": "Sat, 21 Jul 2018 16:02:09 GMT",
"version": "v2"
}
] | 2018-07-24 | [
[
"Alexander",
"Stephon",
""
],
[
"Magueijo",
"Joao",
""
],
[
"Smolin",
"Lee",
""
]
] | We present an extension of general relativity in which the cosmological constant becomes dynamical and turns out to be conjugate to the Chern-Simons invariant of the Ashtekar connection on a spatial slicing. The latter has been proposed in \cite{Chopin-Lee} as a time variable for quantum gravity: the Chern-Simons time.... |
gr-qc/0210045 | Thomas Buchert | Thomas Buchert and Mauro Carfora | Cosmological parameters are dressed | LateX, PRLstyle, 4 pages; submitted to PRL | Phys.Rev.Lett.90:031101,2003 | 10.1103/PhysRevLett.90.031101 | null | gr-qc astro-ph hep-ph hep-th | null | In the context of the averaging problem in relativistic cosmology, we provide
a key to the interpretation of cosmological parameters by taking into account
the actual inhomogeneous geometry of the Universe. We discuss the relation
between `bare' cosmological parameters determining the cosmological model, and
the para... | [
{
"created": "Tue, 15 Oct 2002 08:04:14 GMT",
"version": "v1"
}
] | 2009-07-10 | [
[
"Buchert",
"Thomas",
""
],
[
"Carfora",
"Mauro",
""
]
] | In the context of the averaging problem in relativistic cosmology, we provide a key to the interpretation of cosmological parameters by taking into account the actual inhomogeneous geometry of the Universe. We discuss the relation between `bare' cosmological parameters determining the cosmological model, and the parame... |
2307.02567 | Yuri Obukhov | Yuri N. Obukhov | Spin as a probe of axion physics in general relativity | 14 pages, Revtex, no figures. Accepted for publication in
International Journal of Modern Physics A | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dynamics of spin in external electromagnetic, gravitational, and axion
fields is analysed in the framework of the gravitoelectromagnetism approach in
Einstein's general relativity theory. We consistently extend the recent studies
from the flat Minkowski geometry to the curved spacetime manifolds,
contributing to ... | [
{
"created": "Wed, 5 Jul 2023 18:08:15 GMT",
"version": "v1"
}
] | 2023-07-07 | [
[
"Obukhov",
"Yuri N.",
""
]
] | The dynamics of spin in external electromagnetic, gravitational, and axion fields is analysed in the framework of the gravitoelectromagnetism approach in Einstein's general relativity theory. We consistently extend the recent studies from the flat Minkowski geometry to the curved spacetime manifolds, contributing to th... |
1312.2866 | Marc Lachieze-Rey | Marc Lachieze-Rey (APC) | In search of relativistic time | to appear in Studies in History and Philosophy of Science Part B:
Studies in History and Philosophy of Modern Physics | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper explores the status of some notions which are usually associated
to time, like datations, chronology, durations, causality, cosmic time and time
functions in the Einsteinian relativistic theories. It shows how, even if some
of these notions do exist in the theory or for some particular solution of it,
they... | [
{
"created": "Mon, 9 Dec 2013 20:18:35 GMT",
"version": "v1"
}
] | 2013-12-11 | [
[
"Lachieze-Rey",
"Marc",
"",
"APC"
]
] | This paper explores the status of some notions which are usually associated to time, like datations, chronology, durations, causality, cosmic time and time functions in the Einsteinian relativistic theories. It shows how, even if some of these notions do exist in the theory or for some particular solution of it, they a... |
2111.02462 | Charis Anastopoulos | Charis Anastopoulos and Bei-Lok Hu | Gravitational Decoherence: A Thematic Overview | 26 pages, Article prepared for the Special Topic Collection
"Celebrating Sir Roger Penrose's Nobel Prize" | null | 10.1116/5.0077536 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | Gravitational decoherence (GD) refers to the effects of gravity in actuating
the classical appearance of a quantum system. Because the underlying processes
involve issues in general relativity (GR), quantum field theory (QFT) and
quantum information, GD has fundamental theoretical significance. There is a
great varie... | [
{
"created": "Wed, 3 Nov 2021 18:37:40 GMT",
"version": "v1"
}
] | 2024-06-19 | [
[
"Anastopoulos",
"Charis",
""
],
[
"Hu",
"Bei-Lok",
""
]
] | Gravitational decoherence (GD) refers to the effects of gravity in actuating the classical appearance of a quantum system. Because the underlying processes involve issues in general relativity (GR), quantum field theory (QFT) and quantum information, GD has fundamental theoretical significance. There is a great variety... |
2204.06420 | Francesco Pace | Francesco Pace and Noemi Frusciante | A 3D Phase Space Analysis of Scalar Field Potentials | 23 pages, 3 figures. 4 tables. Accepted for publication on Universe
for the Special Issue entitled "Large Scale Structure of the Universe", led
by the authors, and belongs to the section "Cosmology" | Universe 2022, 8(3), 145 | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this study, we present the phase-space analysis of Quintessence models
specified by the choice of two potentials, namely the Recliner potential and
what we call the broken exponential-law potential, which is a new proposal.
Using a dynamical system analysis we provide a systematic study of the
cosmological evoluti... | [
{
"created": "Wed, 13 Apr 2022 14:30:48 GMT",
"version": "v1"
}
] | 2022-04-14 | [
[
"Pace",
"Francesco",
""
],
[
"Frusciante",
"Noemi",
""
]
] | In this study, we present the phase-space analysis of Quintessence models specified by the choice of two potentials, namely the Recliner potential and what we call the broken exponential-law potential, which is a new proposal. Using a dynamical system analysis we provide a systematic study of the cosmological evolution... |
2104.09972 | Justin Ripley | Justin L. Ripley | A symmetric hyperbolic formulation of the vacuum Einstein equations in
affine-null coordinates | updated to match journal version | Journal of Mathematical Physics 62, 062501 (2021) | 10.1063/5.0055561 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a symmetric hyperbolic formulation of the Einstein equations in
affine-null coordinates. Giannakopoulos et. al. (arXiv:2007.06419) recently
showed that the most commonly numerically implemented formulations of the
Einstein equations in affine-null coordinates (and other single-null coordinate
systems) are ... | [
{
"created": "Tue, 20 Apr 2021 14:04:03 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jun 2021 20:37:16 GMT",
"version": "v2"
}
] | 2021-06-04 | [
[
"Ripley",
"Justin L.",
""
]
] | We present a symmetric hyperbolic formulation of the Einstein equations in affine-null coordinates. Giannakopoulos et. al. (arXiv:2007.06419) recently showed that the most commonly numerically implemented formulations of the Einstein equations in affine-null coordinates (and other single-null coordinate systems) are on... |
1705.09470 | Alexander Kamenshchik | A.O. Barvinsky and A.Yu. Kamenshchik | Darkness without dark matter and energy -- generalized unimodular
gravity | 11 pages, final version, to be published in Physics Letters B | Physics Letters B 774, 59-63 (2017) | 10.1016/j.physletb.2017.09.045 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We suggest a Lorentz non-invariant generalization of the unimodular gravity
theory, which is classically equivalent to general relativity with a locally
inert (devoid of local degrees of freedom) perfect fluid having an equation of
state with a constant parameter $w$. For the range of $w$ near $-1$ this dark
fluid ca... | [
{
"created": "Fri, 26 May 2017 08:17:11 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Sep 2017 13:30:05 GMT",
"version": "v2"
}
] | 2017-10-02 | [
[
"Barvinsky",
"A. O.",
""
],
[
"Kamenshchik",
"A. Yu.",
""
]
] | We suggest a Lorentz non-invariant generalization of the unimodular gravity theory, which is classically equivalent to general relativity with a locally inert (devoid of local degrees of freedom) perfect fluid having an equation of state with a constant parameter $w$. For the range of $w$ near $-1$ this dark fluid can ... |
1604.07213 | Muhammad Zubair | M. Zubair, Farzana Kousar and Sebastian Bahamonde | Thermodynamics in $f(R,R_{\alpha\beta}R^{\alpha\beta},\phi)$ theory of
gravity | 29 pages, 4 figures | Physics of the Dark Universe Vol. 14, (2016)116-125 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | First and second laws of black hole thermodynamics are examined at the
apparent horizon of FRW spacetime in $f(R,R_{\alpha\beta}R^{\alpha\beta}
,\phi)$ gravity, where $R$, $R_{\alpha\beta}R^{\alpha\beta}$ and $\phi$ are the
Ricci scalar, Ricci invariant and the scalar field respectively. In this
modified theory, Frie... | [
{
"created": "Mon, 25 Apr 2016 11:47:38 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Nov 2016 15:02:07 GMT",
"version": "v2"
}
] | 2016-11-17 | [
[
"Zubair",
"M.",
""
],
[
"Kousar",
"Farzana",
""
],
[
"Bahamonde",
"Sebastian",
""
]
] | First and second laws of black hole thermodynamics are examined at the apparent horizon of FRW spacetime in $f(R,R_{\alpha\beta}R^{\alpha\beta} ,\phi)$ gravity, where $R$, $R_{\alpha\beta}R^{\alpha\beta}$ and $\phi$ are the Ricci scalar, Ricci invariant and the scalar field respectively. In this modified theory, Friedm... |
2208.01987 | Guillermo A. Mena Marugan | Simon Iteanu and Guillermo A. Mena Marug\'an | Mass of cosmological perturbations in the hybrid and dressed metric
formalisms of Loop Quantum Cosmology for the Starobinsky and exponential
potentials | 13 pages | Universe 8, 463 (2022) | 10.3390/universe8090463 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The hybrid and the dressed metric formalisms for the study of primordial
perturbations in Loop Quantum Cosmology lead to dynamical equations for the
modes of these perturbations that are of a generalized harmonic-oscillator
type, with a mass that depends on the background but is the same for all modes.
For quantum ba... | [
{
"created": "Wed, 3 Aug 2022 11:28:21 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Sep 2022 09:17:23 GMT",
"version": "v2"
}
] | 2022-09-26 | [
[
"Iteanu",
"Simon",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
]
] | The hybrid and the dressed metric formalisms for the study of primordial perturbations in Loop Quantum Cosmology lead to dynamical equations for the modes of these perturbations that are of a generalized harmonic-oscillator type, with a mass that depends on the background but is the same for all modes. For quantum back... |
gr-qc/9212009 | null | Peter C. Aichelburg and Piotr Bizon | Magnetically Charged Black Holes and their Stability | 19 pages, 5 figures available upon request, Latex | Phys.Rev.D48:607-615,1993 | 10.1103/PhysRevD.48.607 | UWThPh-1992-63 | gr-qc hep-th | null | We study magnetically charged black holes in the Einstein-Yang-Mills-Higgs
theory in the limit of infinitely strong coupling of the Higgs field. Using
mixed analytical and numerical methods we give a complete description of static
spherically symmetric black hole solutions, both abelian and nonabelian. In
particular,... | [
{
"created": "Mon, 14 Dec 1992 14:17:00 GMT",
"version": "v1"
}
] | 2010-11-01 | [
[
"Aichelburg",
"Peter C.",
""
],
[
"Bizon",
"Piotr",
""
]
] | We study magnetically charged black holes in the Einstein-Yang-Mills-Higgs theory in the limit of infinitely strong coupling of the Higgs field. Using mixed analytical and numerical methods we give a complete description of static spherically symmetric black hole solutions, both abelian and nonabelian. In particular, w... |
gr-qc/0309063 | Edward Anderson | Edward Anderson and Reza Tavakol | PDE System Approach to Large Extra Dimensions | 33 pages and 9 figures | null | null | null | gr-qc hep-th | null | We explore some fundational issues regarding the splitting of D-dimensional
EFE's w.r.t timelike and spacelike (D-1)-dimensional hypersurfaces, first
without and then with thin matter sheets such as branes. We begin to implement
methodology, that is well-established for the GR CP and IVP, in the new field
of GR-based... | [
{
"created": "Fri, 12 Sep 2003 16:21:16 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Anderson",
"Edward",
""
],
[
"Tavakol",
"Reza",
""
]
] | We explore some fundational issues regarding the splitting of D-dimensional EFE's w.r.t timelike and spacelike (D-1)-dimensional hypersurfaces, first without and then with thin matter sheets such as branes. We begin to implement methodology, that is well-established for the GR CP and IVP, in the new field of GR-based b... |
2307.14862 | Artyom Astashenok V | Artyom V. Astashenok, Sergey D. Odintsov, Vasilis K. Oikonomou | Compact Stars with Dark Energy in General Relativity and Modified
Gravity | accepted in Phys. Dark Univ | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate realistic models of compact objects, focusing on neutron and
strange stars, composed by dense matter and dark energy in the form of a simple
fluid or scalar field interacting with matter. For the dark energy component,
we use equations of state compatible with cosmological observations. This
requiremen... | [
{
"created": "Thu, 27 Jul 2023 13:46:30 GMT",
"version": "v1"
}
] | 2023-08-01 | [
[
"Astashenok",
"Artyom V.",
""
],
[
"Odintsov",
"Sergey D.",
""
],
[
"Oikonomou",
"Vasilis K.",
""
]
] | We investigate realistic models of compact objects, focusing on neutron and strange stars, composed by dense matter and dark energy in the form of a simple fluid or scalar field interacting with matter. For the dark energy component, we use equations of state compatible with cosmological observations. This requirement ... |
2009.07732 | Tanmoy Paul | Tanmoy Paul | Antisymmetric tensor fields in modified gravity: a summary | Invited review paper from Symmetry for special issue Feature Papers
2020, Symmetry Accepted | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We provide various aspects of second rank antisymmetric Kalb-Ramond (KR)
field in modified theories of gravity. The KR field energy density is found to
decrease with the expansion of our universe at a faster rate in comparison to
radiation and matter components. Thus as the Universe evolves and cools down,
the contri... | [
{
"created": "Wed, 16 Sep 2020 15:05:21 GMT",
"version": "v1"
}
] | 2020-09-17 | [
[
"Paul",
"Tanmoy",
""
]
] | We provide various aspects of second rank antisymmetric Kalb-Ramond (KR) field in modified theories of gravity. The KR field energy density is found to decrease with the expansion of our universe at a faster rate in comparison to radiation and matter components. Thus as the Universe evolves and cools down, the contribu... |
1910.08756 | Thomas B\"ackdahl | Steffen Aksteiner, Lars Andersson, Thomas B\"ackdahl, Igor Khavkine,
Bernard Whiting | Compatibility complex for black hole spacetimes | 23 pages. Some remarks added | Commun. Math. Phys. (2021) | 10.1007/s00220-021-04078-y | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The set of local gauge invariant quantities for linearized gravity on the
Kerr spacetime presented by two of the authors (S.A, T.B.) in
(arXiv:1803.05341) is shown to be complete. In particular, any gauge invariant
quantity for linearized gravity on Kerr that is local and of finite order in
derivatives can be express... | [
{
"created": "Sat, 19 Oct 2019 11:54:12 GMT",
"version": "v1"
},
{
"created": "Mon, 10 May 2021 05:14:08 GMT",
"version": "v2"
}
] | 2021-05-11 | [
[
"Aksteiner",
"Steffen",
""
],
[
"Andersson",
"Lars",
""
],
[
"Bäckdahl",
"Thomas",
""
],
[
"Khavkine",
"Igor",
""
],
[
"Whiting",
"Bernard",
""
]
] | The set of local gauge invariant quantities for linearized gravity on the Kerr spacetime presented by two of the authors (S.A, T.B.) in (arXiv:1803.05341) is shown to be complete. In particular, any gauge invariant quantity for linearized gravity on Kerr that is local and of finite order in derivatives can be expressed... |
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