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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2405.09653 | Konstantinos Kostaros | Konstantinos Kostaros, Padelis Papadopoulos, George Pappas | Fractal signatures of non-Kerr spacetimes in the shadow of light-ring
bifurcations | 17 pages, 20 figures. Accepted for publication in Physical Review D | Phys. Rev. D 110, 024001 (2024) | 10.1103/PhysRevD.110.024001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Light-ring bifurcations that can occur for prolate non-Kerr compact objects
can leave an indelible signature on SMBH shadows as a fractal sequence of
eyebrow-like formations. These fractal features are the result of two
properties of these spacetimes. The first is that they allow for multiple
escapes for the photons ... | [
{
"created": "Wed, 15 May 2024 18:43:57 GMT",
"version": "v1"
},
{
"created": "Sun, 9 Jun 2024 19:43:26 GMT",
"version": "v2"
}
] | 2024-07-08 | [
[
"Kostaros",
"Konstantinos",
""
],
[
"Papadopoulos",
"Padelis",
""
],
[
"Pappas",
"George",
""
]
] | Light-ring bifurcations that can occur for prolate non-Kerr compact objects can leave an indelible signature on SMBH shadows as a fractal sequence of eyebrow-like formations. These fractal features are the result of two properties of these spacetimes. The first is that they allow for multiple escapes for the photons (t... |
gr-qc/0001083 | Beverly K. Berger | Beverly K. Berger and Vincent Moncrief | Exact U(1) symmetric cosmologies with local Mixmaster dynamics | 13 pages, 5 figures, uses RevTeX and psfig | Phys.Rev. D62 (2000) 023509 | 10.1103/PhysRevD.62.023509 | null | gr-qc | null | By applying a standard solution generating technique, we transform an
arbitrary vacuum Mixmaster solution on $S^3 \times {\bf R}$ to a new solution
which is spatially inhomogeneous. We thereby obtain a family of exact,
spatially inhomogeneous, vacuum spacetimes which exhibit Belinskii,
Khalatnikov, and Lifshitz (BKL)... | [
{
"created": "Tue, 25 Jan 2000 23:28:48 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Berger",
"Beverly K.",
""
],
[
"Moncrief",
"Vincent",
""
]
] | By applying a standard solution generating technique, we transform an arbitrary vacuum Mixmaster solution on $S^3 \times {\bf R}$ to a new solution which is spatially inhomogeneous. We thereby obtain a family of exact, spatially inhomogeneous, vacuum spacetimes which exhibit Belinskii, Khalatnikov, and Lifshitz (BKL) o... |
1703.09369 | Daniel R Terno | Valentina Baccetti, Robert B. Mann, and Daniel R. Terno | Horizon avoidance in spherically-symmetric collapse | 4 pages. Comments welcome | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study collapse of evaporating spherically-symmetric thin dust shells and
dust balls assuming that quantum effects are encapsulated in a
spherically-symmetric metric that satisfied mild regularity conditions. The
evaporation may accelerate collapse, but for a generic metric the Schwarzschild
radius is not crossed. ... | [
{
"created": "Tue, 28 Mar 2017 01:58:22 GMT",
"version": "v1"
}
] | 2017-03-29 | [
[
"Baccetti",
"Valentina",
""
],
[
"Mann",
"Robert B.",
""
],
[
"Terno",
"Daniel R.",
""
]
] | We study collapse of evaporating spherically-symmetric thin dust shells and dust balls assuming that quantum effects are encapsulated in a spherically-symmetric metric that satisfied mild regularity conditions. The evaporation may accelerate collapse, but for a generic metric the Schwarzschild radius is not crossed. In... |
2211.06481 | Salvatore Capozziello | Salvatore Capozziello and Nisha Godani | Non-Local Gravity Wormholes | 12 pages, 6 figures, published in Phys. Lett. B | null | 10.1016/j.physletb.2022.137572 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Non-local Gravity in view to obtain stable and traversable
wormhole solutions. In particular, the class of Non-local Integral Kernel
Theories of Gravity, with the inverse d'Alembert operator in the gravitational
action, is taken into account. We obtain constraints for the null energy
condition and derive ... | [
{
"created": "Fri, 11 Nov 2022 21:08:27 GMT",
"version": "v1"
},
{
"created": "Fri, 25 Nov 2022 10:11:46 GMT",
"version": "v2"
}
] | 2022-11-28 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Godani",
"Nisha",
""
]
] | We consider Non-local Gravity in view to obtain stable and traversable wormhole solutions. In particular, the class of Non-local Integral Kernel Theories of Gravity, with the inverse d'Alembert operator in the gravitational action, is taken into account. We obtain constraints for the null energy condition and derive th... |
gr-qc/9408036 | Andrew M. Abrahams | Andrew M. Abrahams, Stuart L. Shapiro, and Saul A. Teukolsky | Calculation of gravitational wave forms from black hole collisions and
disk collapse: Applying perturbation theory to numerical spacetimes | 8 pages (RevTex 3.0 with 7 uuencoded figures) | Phys.Rev. D51 (1995) 4295-4301 | 10.1103/PhysRevD.51.4295 | null | gr-qc | null | Many simulations of gravitational collapse to black holes become inaccurate
before the total emitted gravitational radiation can be determined. The main
difficulty is that a significant component of the radiation is still in the
near-zone, strong field region at the time the simulation breaks down. We show
how to cal... | [
{
"created": "Tue, 30 Aug 1994 00:42:44 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Abrahams",
"Andrew M.",
""
],
[
"Shapiro",
"Stuart L.",
""
],
[
"Teukolsky",
"Saul A.",
""
]
] | Many simulations of gravitational collapse to black holes become inaccurate before the total emitted gravitational radiation can be determined. The main difficulty is that a significant component of the radiation is still in the near-zone, strong field region at the time the simulation breaks down. We show how to calcu... |
gr-qc/9405037 | Paul Henry Casper | Bruce Allen, Paul Casper, and Adrian Ottewill | Analytic Results for the Gravitational Radiation from a Class of Cosmic
String Loops | 15 pages, RevTex 3.0, 7 figures available via anonymous ftp from
directory pub/pcasper at alpha1.csd.uwm.edu, WISC-MILW-94-TH-13 | Phys.Rev. D50 (1994) 3703-3712 | 10.1103/PhysRevD.50.3703 | null | gr-qc astro-ph | null | Cosmic string loops are defined by a pair of periodic functions ${\bf a}$ and
${\bf b}$, which trace out unit-length closed curves in three-dimensional
space. We consider a particular class of loops, for which ${\bf a}$ lies along
a line and ${\bf b}$ lies in the plane orthogonal to that line. For this class
of cosmi... | [
{
"created": "Tue, 17 May 1994 19:13:18 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Allen",
"Bruce",
""
],
[
"Casper",
"Paul",
""
],
[
"Ottewill",
"Adrian",
""
]
] | Cosmic string loops are defined by a pair of periodic functions ${\bf a}$ and ${\bf b}$, which trace out unit-length closed curves in three-dimensional space. We consider a particular class of loops, for which ${\bf a}$ lies along a line and ${\bf b}$ lies in the plane orthogonal to that line. For this class of cosmic ... |
2307.02557 | Andrea Russo | Isaac Layton, Jonathan Oppenheim, Andrea Russo, Zachary Weller-Davies | The weak field limit of quantum matter back-reacting on classical
spacetime | 42 pages, 1 table, comments welcomed | J. High Energ. Phys. 2023, 163 (2023) | 10.1007/JHEP08(2023)163 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Consistent coupling of quantum and classical degrees of freedom exists so
long as there is both diffusion of the classical degrees of freedom and
decoherence of the quantum system. In this paper, we derive the Newtonian limit
of such classical-quantum (CQ) theories of gravity. Our results are obtained
both via the ga... | [
{
"created": "Wed, 5 Jul 2023 18:01:06 GMT",
"version": "v1"
}
] | 2024-07-30 | [
[
"Layton",
"Isaac",
""
],
[
"Oppenheim",
"Jonathan",
""
],
[
"Russo",
"Andrea",
""
],
[
"Weller-Davies",
"Zachary",
""
]
] | Consistent coupling of quantum and classical degrees of freedom exists so long as there is both diffusion of the classical degrees of freedom and decoherence of the quantum system. In this paper, we derive the Newtonian limit of such classical-quantum (CQ) theories of gravity. Our results are obtained both via the gaug... |
1410.6899 | Matthew J. Lake Dr | Tiberiu Harko and Matthew J. Lake | Bose-Einstein condensate strings | 22 pages, 24 figures. Published version | Phys. Rev. D 91, 045012 (2015) | 10.1103/PhysRevD.91.045012 | null | gr-qc astro-ph.HE cond-mat.other hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the possible existence of gravitationally bound general
relativistic strings consisting of Bose-Einstein condensate (BEC) matter which
is described, in the Newtonian limit, by the zero temperature time-dependent
nonlinear Schr\"odinger equation (the Gross-Pitaevskii equation), with
repulsive interparticle... | [
{
"created": "Sat, 25 Oct 2014 09:02:07 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Oct 2014 09:14:56 GMT",
"version": "v2"
},
{
"created": "Sat, 17 Jan 2015 12:15:30 GMT",
"version": "v3"
},
{
"created": "Sun, 27 Sep 2015 12:16:40 GMT",
"version": "v4"
}
] | 2015-09-29 | [
[
"Harko",
"Tiberiu",
""
],
[
"Lake",
"Matthew J.",
""
]
] | We consider the possible existence of gravitationally bound general relativistic strings consisting of Bose-Einstein condensate (BEC) matter which is described, in the Newtonian limit, by the zero temperature time-dependent nonlinear Schr\"odinger equation (the Gross-Pitaevskii equation), with repulsive interparticle i... |
0809.2452 | David Kubiznak | David Kubiznak | Hidden Symmetries of Higher-Dimensional Rotating Black Holes | PhD Thesis, University of Alberta, September 2008, Advisor: Valeri P.
Frolov, 170 pages, no figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this thesis we study higher-dimensional rotating black holes. Such black
holes are widely discussed in string theory and brane-world models at present.
We demonstrate that even the most general known Kerr-NUT-(A)dS spacetime,
describing the general rotating higher-dimensional asymptotically (anti) de
Sitter black ... | [
{
"created": "Mon, 15 Sep 2008 07:30:26 GMT",
"version": "v1"
}
] | 2008-12-15 | [
[
"Kubiznak",
"David",
""
]
] | In this thesis we study higher-dimensional rotating black holes. Such black holes are widely discussed in string theory and brane-world models at present. We demonstrate that even the most general known Kerr-NUT-(A)dS spacetime, describing the general rotating higher-dimensional asymptotically (anti) de Sitter black ho... |
1706.09117 | Daiqin Su | Daiqin Su, C. T. Marco Ho, Robert B. Mann and Timothy C. Ralph | Black Hole Squeezers | 19 pages, 3 figures, 1 table. Comments are welcome | Phys. Rev. D 96, 065017 (2017) | 10.1103/PhysRevD.96.065017 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the gravitational quasi-normal modes (QNMs) of a Schwarzschild
black hole play the role of a multimode squeezer that can generate particles.
For a minimally coupled scalar field, the QNMs "squeeze" the initial state of
the scalar field (even for the vacuum) and produce scalar particles. The
maximal squee... | [
{
"created": "Wed, 28 Jun 2017 03:39:25 GMT",
"version": "v1"
}
] | 2017-10-04 | [
[
"Su",
"Daiqin",
""
],
[
"Ho",
"C. T. Marco",
""
],
[
"Mann",
"Robert B.",
""
],
[
"Ralph",
"Timothy C.",
""
]
] | We show that the gravitational quasi-normal modes (QNMs) of a Schwarzschild black hole play the role of a multimode squeezer that can generate particles. For a minimally coupled scalar field, the QNMs "squeeze" the initial state of the scalar field (even for the vacuum) and produce scalar particles. The maximal squeezi... |
1301.3205 | Ahmed Youssef | Ahmed Youssef and Dirk Kreimer | Resummation of infrared logarithms in de Sitter space via
Dyson-Schwinger equations: the ladder-rainbow approximation | 4 figures | Phys. Rev. D 89, 124021 (2014) | 10.1103/PhysRevD.89.124021 | MaPhy-AvH/2013-01 | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the infrared (large separation) behavior of a massless minimally
coupled scalar quantum field theory with a quartic self interaction in de
Sitter spacetime. We show that the perturbation series in the interaction
strength is singular and secular, i.e. it does not lead to a uniform
approximation of the soluti... | [
{
"created": "Tue, 15 Jan 2013 02:31:23 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Nov 2013 13:56:06 GMT",
"version": "v2"
},
{
"created": "Thu, 7 Aug 2014 13:06:44 GMT",
"version": "v3"
}
] | 2014-08-08 | [
[
"Youssef",
"Ahmed",
""
],
[
"Kreimer",
"Dirk",
""
]
] | We study the infrared (large separation) behavior of a massless minimally coupled scalar quantum field theory with a quartic self interaction in de Sitter spacetime. We show that the perturbation series in the interaction strength is singular and secular, i.e. it does not lead to a uniform approximation of the solution... |
1907.04234 | \"Ozg\"ur Akarsu | Ozgur Akarsu, Alexey Chopovsky, Valerii Shulga, Ezgi Yalcinkaya,
Alexander Zhuk | Weak field limit of higher dimensional massive Brans-Dicke gravity:
Observational constraints | 8 pages, no figures and tables; matches the version published in
Physical Review D | Phys. Rev. D 101, 024004 (2020) | 10.1103/PhysRevD.101.024004 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider higher-dimensional massive Brans-Dicke theory with Ricci-flat
internal space. The background model is perturbed by a massive gravitating
source which is pressureless in the external (our space) but has an arbitrary
equation-of-state parameter $\Omega$ in the internal space. We obtain the exact
solution of... | [
{
"created": "Tue, 9 Jul 2019 15:16:21 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Jan 2020 15:24:08 GMT",
"version": "v2"
}
] | 2020-01-03 | [
[
"Akarsu",
"Ozgur",
""
],
[
"Chopovsky",
"Alexey",
""
],
[
"Shulga",
"Valerii",
""
],
[
"Yalcinkaya",
"Ezgi",
""
],
[
"Zhuk",
"Alexander",
""
]
] | We consider higher-dimensional massive Brans-Dicke theory with Ricci-flat internal space. The background model is perturbed by a massive gravitating source which is pressureless in the external (our space) but has an arbitrary equation-of-state parameter $\Omega$ in the internal space. We obtain the exact solution of t... |
2304.11833 | Fil Simovic | Pravin Kumar Dahal, Fil Simovic | The Hawking temperature of dynamical black holes via Rindler
transformations | 10 pages, 1 figure. Comments welcome | null | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | The Vaidya metric serves as a useful model-building tool that captures many
essential features of dynamical and/or evaporating black hole spacetimes.
Working in a semiclassical setting, we show that in the limit of slow
evaporation, a general spherically symmetric metric subject to certain
regularity conditions is un... | [
{
"created": "Mon, 24 Apr 2023 05:44:04 GMT",
"version": "v1"
}
] | 2023-04-25 | [
[
"Dahal",
"Pravin Kumar",
""
],
[
"Simovic",
"Fil",
""
]
] | The Vaidya metric serves as a useful model-building tool that captures many essential features of dynamical and/or evaporating black hole spacetimes. Working in a semiclassical setting, we show that in the limit of slow evaporation, a general spherically symmetric metric subject to certain regularity conditions is uniq... |
2404.08257 | Eric Ling | Eric Ling | The $C^0$-inextendibility of some spatially flat FLRW spacetimes | 7 pages | null | null | CPH-GEOTOP-DNRF151; CF21-0680 | gr-qc math-ph math.DG math.MP | http://creativecommons.org/licenses/by/4.0/ | Utilizing some of Sbierski's recent $C^0$-inextendibility techniques [13], we
prove the $C^0$-inextendibility of a class of spatially flat FLRW spacetimes
without particle horizons.
| [
{
"created": "Fri, 12 Apr 2024 06:13:33 GMT",
"version": "v1"
}
] | 2024-04-15 | [
[
"Ling",
"Eric",
""
]
] | Utilizing some of Sbierski's recent $C^0$-inextendibility techniques [13], we prove the $C^0$-inextendibility of a class of spatially flat FLRW spacetimes without particle horizons. |
2101.06272 | Surajit Kalita | Surajit Kalita (IISc), T. R. Govindarajan (IMSc) and Banibrata
Mukhopadhyay (IISc) | Super-Chandrasekhar limiting mass white dwarfs as emergent phenomena of
noncommutative squashed fuzzy spheres | 20 pages including 7 figures; text is modified and references are
updated: Accepted for publication in IJMPD | IJMPD, 30, 13 (2021) 2150101 | 10.1142/S0218271821501017 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The indirect evidence for at least a dozen massive white dwarfs violating the
Chandrasekhar mass-limit is considered to be one of the wonderful discoveries
in astronomy for more than a decade. Researchers have already proposed a
diverse amount of models to explain this astounding phenomenon. However, each
of these mo... | [
{
"created": "Fri, 15 Jan 2021 19:00:01 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Jul 2021 16:45:15 GMT",
"version": "v2"
}
] | 2021-11-08 | [
[
"Kalita",
"Surajit",
"",
"IISc"
],
[
"Govindarajan",
"T. R.",
"",
"IMSc"
],
[
"Mukhopadhyay",
"Banibrata",
"",
"IISc"
]
] | The indirect evidence for at least a dozen massive white dwarfs violating the Chandrasekhar mass-limit is considered to be one of the wonderful discoveries in astronomy for more than a decade. Researchers have already proposed a diverse amount of models to explain this astounding phenomenon. However, each of these mode... |
gr-qc/9808079 | Nazeem Mustapha | Nazeem Mustapha, Charles Hellaby and G. F. R. Ellis (University of
Cape Town) | Large Scale Inhomogeneity Versus Source Evolution -- Can We Distinguish
Them Observationally? | mn style, mn.sty file included, mn.sty file removed | Mon.Not.Roy.Astron.Soc. 292 (1997) 817-830 | 10.1093/mnras/292.4.817 | null | gr-qc | null | We reconsider the issue of proving large scale spatial homogeneity of the
universe, given isotropic observations about us and the possibility of source
evolution both in numbers and luminosities. Two theorems make precise the
freedom available in constructing cosmological models that will fit the
observations. They m... | [
{
"created": "Fri, 28 Aug 1998 15:42:14 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Mustapha",
"Nazeem",
"",
"University of\n Cape Town"
],
[
"Hellaby",
"Charles",
"",
"University of\n Cape Town"
],
[
"Ellis",
"G. F. R.",
"",
"University of\n Cape Town"
]
] | We reconsider the issue of proving large scale spatial homogeneity of the universe, given isotropic observations about us and the possibility of source evolution both in numbers and luminosities. Two theorems make precise the freedom available in constructing cosmological models that will fit the observations. They mak... |
1612.04387 | Marco Astorino | Marco Astorino | Thermodynamics of Regular Accelerating Black Holes | 17 pages, 2 figures ; v2: extended to fulfil journal requirements,
typos corrected | Phys. Rev. D 95, 064007 (2017) | 10.1103/PhysRevD.95.064007 | UAI-PHY-16/08 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the covariant phase space formalism, we compute the conserved charges
for a solution, describing an accelerating and electrically charged
Reissner-Nordstrom black hole. The metric is regular provided that the
acceleration is driven by an external electric field, in spite of the usual
string of the standard C-me... | [
{
"created": "Tue, 13 Dec 2016 21:00:47 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Mar 2017 20:43:49 GMT",
"version": "v2"
}
] | 2017-03-17 | [
[
"Astorino",
"Marco",
""
]
] | Using the covariant phase space formalism, we compute the conserved charges for a solution, describing an accelerating and electrically charged Reissner-Nordstrom black hole. The metric is regular provided that the acceleration is driven by an external electric field, in spite of the usual string of the standard C-metr... |
gr-qc/9909044 | Arbab I. Arbab | Arbab I. Arbab | A linearly Expanding Universe With Variable G and Lambda | A revised version | Spacetime & Substance 1(6) (2001) 39 | null | null | gr-qc | null | We have studied a cosmological model with a cosmological term of the form
$\Lambda=3\alpha\fr{\dot R^2}{R^2}+\bt\fr{\ddot R}{R}+\fr{3\gamma}{R^2} \alpha,
\
\bt \gamma$ are constants. The scale factor (R) is found to vary linearly
with time for both radiation and matter dominated epochs.
The cosmological constant ... | [
{
"created": "Tue, 14 Sep 1999 20:52:20 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Oct 1999 12:05:52 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Arbab",
"Arbab I.",
""
]
] | We have studied a cosmological model with a cosmological term of the form $\Lambda=3\alpha\fr{\dot R^2}{R^2}+\bt\fr{\ddot R}{R}+\fr{3\gamma}{R^2} \alpha, \ \bt \gamma$ are constants. The scale factor (R) is found to vary linearly with time for both radiation and matter dominated epochs. The cosmological constant is fou... |
1808.01941 | Giovanni Otalora | Manuel Gonzalez-Espinoza, Giovanni Otalora, Joel Saavedra, Nelson
Videla | Growth of matter overdensities in non-minimal torsion-matter coupling
theories | 13 pages, 6 figures | Eur. Phys. J. C (2018) 78:799 | 10.1140/epjc/s10052-018-6286-y | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the evolution of cosmological perturbations around a homogeneous and
isotropic background in the framework of the non-minimal torsion-matter
coupling extension of $f(T)$ gravity. We are concerned with the effects of the
non-minimal coupling term on the growth of matter overdensities. Under the
quasi-static a... | [
{
"created": "Mon, 6 Aug 2018 14:47:29 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Oct 2018 23:35:38 GMT",
"version": "v2"
}
] | 2018-10-09 | [
[
"Gonzalez-Espinoza",
"Manuel",
""
],
[
"Otalora",
"Giovanni",
""
],
[
"Saavedra",
"Joel",
""
],
[
"Videla",
"Nelson",
""
]
] | We study the evolution of cosmological perturbations around a homogeneous and isotropic background in the framework of the non-minimal torsion-matter coupling extension of $f(T)$ gravity. We are concerned with the effects of the non-minimal coupling term on the growth of matter overdensities. Under the quasi-static app... |
gr-qc/9304007 | null | Dieter R. Brill and Sean A. Hayward | Global Structure of a Black-Hole Cosmos and its Extremes | 11 pages. Diagrams not included | Class.Quant.Grav.11:359-370,1994 | 10.1088/0264-9381/11/2/008 | null | gr-qc | null | We analyze the global structure of a family of Einstein-Maxwell solutions
parametrized by mass, charge and cosmological constant. In a qualitative
classification there are: (i) generic black-hole solutions, describing a
Wheeler wormhole in a closed cosmos of spatial topology $S^2\times S^1$; (ii)
generic naked-singul... | [
{
"created": "Tue, 6 Apr 1993 13:41:27 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Brill",
"Dieter R.",
""
],
[
"Hayward",
"Sean A.",
""
]
] | We analyze the global structure of a family of Einstein-Maxwell solutions parametrized by mass, charge and cosmological constant. In a qualitative classification there are: (i) generic black-hole solutions, describing a Wheeler wormhole in a closed cosmos of spatial topology $S^2\times S^1$; (ii) generic naked-singular... |
0711.0243 | Ken-Ichi Nakao | Ken-ichi Nakao, Daisuke Ida, Yasunari Kurita | New instability in relativistic cylindrically symmetric system | 16 pages, no figure | Phys.Rev.D77:044021,2008 | 10.1103/PhysRevD.77.044021 | OCU-PHYS-281, AP-GR-49 | gr-qc | null | We investigate an infinitesimally thin cylindrical shell composed of
counter-rotating dust particles. This system was studied by Apostolatos and
Thorne in terms of the C-energy for a bounded domain. In this paper, we
reanalyze this system by evaluating the C-energy on the future null infinity.
We find that some class... | [
{
"created": "Fri, 2 Nov 2007 04:53:50 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Nakao",
"Ken-ichi",
""
],
[
"Ida",
"Daisuke",
""
],
[
"Kurita",
"Yasunari",
""
]
] | We investigate an infinitesimally thin cylindrical shell composed of counter-rotating dust particles. This system was studied by Apostolatos and Thorne in terms of the C-energy for a bounded domain. In this paper, we reanalyze this system by evaluating the C-energy on the future null infinity. We find that some class o... |
2006.10827 | Valerio Faraoni | Valerio Faraoni and Genevi\`eve Vachon (Bishop's University) | When Painlev\'e-Gullstrand coordinates fail | 9 pages, no figures, typographical errors corrected. Matches version
accepted in Eur. Phys. J. C | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Painlev\'e-Gullstrand coordinates, a very useful tool in spherical horizon
thermodynamics, fail in anti-de Sitter space and in the inner region of
Reissner-Nordstr\"om. We predict this breakdown to occur in any region
containing negative Misner-Sharp-Hernandez quasilocal mass because of repulsive
gravity stopping the... | [
{
"created": "Thu, 18 Jun 2020 19:47:15 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Aug 2020 19:18:44 GMT",
"version": "v2"
}
] | 2020-08-18 | [
[
"Faraoni",
"Valerio",
"",
"Bishop's University"
],
[
"Vachon",
"Geneviève",
"",
"Bishop's University"
]
] | Painlev\'e-Gullstrand coordinates, a very useful tool in spherical horizon thermodynamics, fail in anti-de Sitter space and in the inner region of Reissner-Nordstr\"om. We predict this breakdown to occur in any region containing negative Misner-Sharp-Hernandez quasilocal mass because of repulsive gravity stopping the m... |
gr-qc/9610074 | Paul Anderson | Paul R. Anderson and Dieter R. Brill | Gravitational Geons Revisited | 18 pages, ReVTeX. To appear in Physical Review D. Significant changes
include more details in the derivations of certain key equations and the
addition of an appendix containing a proof of the existence of a geon
solution to the equations derived by Wheeler. Also a reference has been added
and various minor cha... | Phys.Rev.D56:4824-4833,1997 | 10.1103/PhysRevD.56.4824 | null | gr-qc | null | A careful analysis of the gravitational geon solution found by Brill and
Hartle is made. The gravitational wave expansion they used is shown to be
consistent and to result in a gauge invariant wave equation. It also results in
a gauge invariant effective stress-energy tensor for the gravitational waves
provided that ... | [
{
"created": "Thu, 31 Oct 1996 22:41:37 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Sep 1997 21:24:10 GMT",
"version": "v2"
}
] | 2011-09-09 | [
[
"Anderson",
"Paul R.",
""
],
[
"Brill",
"Dieter R.",
""
]
] | A careful analysis of the gravitational geon solution found by Brill and Hartle is made. The gravitational wave expansion they used is shown to be consistent and to result in a gauge invariant wave equation. It also results in a gauge invariant effective stress-energy tensor for the gravitational waves provided that a ... |
0907.1999 | Natalia Kiriushcheva | N. Kiriushcheva and S.V. Kuzmin | Translational invariance of the Einstein-Cartan action in any dimension | 25 pages, new Section on group properties of transformations is
added, references are added. This version will appear in General Relativity
and Gravitation | Gen.Rel.Grav.42:2613-2631,2010 | 10.1007/s10714-010-1003-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate that from the first order formulation of the Einstein-Cartan
action it is possible to derive the basic differential identity that leads to
translational invariance of the action in the tangent space. The
transformations of fields is written explicitly for both the first and second
order formulations an... | [
{
"created": "Sun, 12 Jul 2009 03:39:31 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Nov 2009 18:24:36 GMT",
"version": "v2"
},
{
"created": "Tue, 18 May 2010 03:58:43 GMT",
"version": "v3"
}
] | 2011-02-21 | [
[
"Kiriushcheva",
"N.",
""
],
[
"Kuzmin",
"S. V.",
""
]
] | We demonstrate that from the first order formulation of the Einstein-Cartan action it is possible to derive the basic differential identity that leads to translational invariance of the action in the tangent space. The transformations of fields is written explicitly for both the first and second order formulations and ... |
1808.10757 | Youngsub Yoon | Youngsub Yoon | CMB anisotropy power spectrum of 3-sphere universe for low $l$ | 6 pages, Omega_tot calculated | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the CMB anisotropy power spectrum of a closed universe for large
angle (i.e., low $l$) due to a scale invariant fluctuation of primordial
universe by considering the spherical harmonics for 3-sphere. In particular,
contrary to the wide belief, we show that this consideration affects the CMB
anisotropy po... | [
{
"created": "Thu, 30 Aug 2018 06:32:21 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Sep 2018 13:10:01 GMT",
"version": "v2"
},
{
"created": "Thu, 10 Dec 2020 15:24:05 GMT",
"version": "v3"
},
{
"created": "Tue, 15 Dec 2020 14:14:56 GMT",
"version": "v4"
}
] | 2020-12-16 | [
[
"Yoon",
"Youngsub",
""
]
] | We calculate the CMB anisotropy power spectrum of a closed universe for large angle (i.e., low $l$) due to a scale invariant fluctuation of primordial universe by considering the spherical harmonics for 3-sphere. In particular, contrary to the wide belief, we show that this consideration affects the CMB anisotropy powe... |
1805.03781 | Matt Visser | Petarpa Boonserm (Chulalongkorn University), Tritos Ngampitipan
(Chandrakasem Rajabhat University), Alex Simpson (Victoria University of
Wellington), and Matt Visser (Victoria University of Wellington) | The exponential metric represents a traversable wormhole | V1: 25 pages. V2: Still 25 pages. 6 references added. No physics
changes. V3: Still 25 pages. 2 more references added. No physics changes | Phys. Rev. D 98, 084048 (2018) | 10.1103/PhysRevD.98.084048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For various reasons a number of authors have mooted an "exponential form" for
the spacetime metric: \[ ds^2 = - e^{-2m/r} dt^2 + e^{+2m/r}\{dr^2 +
r^2(d\theta^2+\sin^2\theta \, d\phi^2)\}. \] While the weak-field behaviour
matches nicely with weak-field general relativity, and so also automatically
matches nicely wit... | [
{
"created": "Thu, 10 May 2018 01:56:30 GMT",
"version": "v1"
},
{
"created": "Thu, 17 May 2018 07:20:47 GMT",
"version": "v2"
},
{
"created": "Mon, 21 May 2018 07:04:42 GMT",
"version": "v3"
}
] | 2018-11-07 | [
[
"Boonserm",
"Petarpa",
"",
"Chulalongkorn University"
],
[
"Ngampitipan",
"Tritos",
"",
"Chandrakasem Rajabhat University"
],
[
"Simpson",
"Alex",
"",
"Victoria University of\n Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University ... | For various reasons a number of authors have mooted an "exponential form" for the spacetime metric: \[ ds^2 = - e^{-2m/r} dt^2 + e^{+2m/r}\{dr^2 + r^2(d\theta^2+\sin^2\theta \, d\phi^2)\}. \] While the weak-field behaviour matches nicely with weak-field general relativity, and so also automatically matches nicely with ... |
1311.3007 | Shahar Hod | Shahar Hod | Purely imaginary polar resonances of rapidly-rotating Kerr black holes | 13 pages | Physical Review D 88, 084018 (2013) | null | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove the existence of a unique family of non-oscillatory
(purely-imaginary) polar quasinormal resonances of rapidly-rotating Kerr black
holes. These purely imaginary resonances can be expressed in the compact form:
w_n=-i2*pi*T_{BH}*(l+1+n), where T_{BH} is the black-hole temperature, l is the
spheroidal harmonic... | [
{
"created": "Wed, 13 Nov 2013 03:13:40 GMT",
"version": "v1"
}
] | 2013-11-14 | [
[
"Hod",
"Shahar",
""
]
] | We prove the existence of a unique family of non-oscillatory (purely-imaginary) polar quasinormal resonances of rapidly-rotating Kerr black holes. These purely imaginary resonances can be expressed in the compact form: w_n=-i2*pi*T_{BH}*(l+1+n), where T_{BH} is the black-hole temperature, l is the spheroidal harmonic i... |
1808.09589 | Jose Wadih Maluf Dr. | J. W. Maluf, J. F. da Rocha-Neto, S. C. Ulhoa and F. L. Carneiro | The Work-Energy Relation for Particles on Geodesics in the pp-Wave
Spacetimes | 25 pages, 7 figures, published in the JCAP | JCAP03(2019)028 | 10.1088/1475-7516/2019/03/028 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A non-linear gravitational wave imparts gravitational acceleration to all
particles that are hit by the wave. We evaluate this acceleration for particles
in the pp-wave space-times, and integrate it numerically along the geodesic
trajectories of the particles during the passage of a burst of gravitational
wave. The t... | [
{
"created": "Wed, 29 Aug 2018 00:21:56 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Dec 2018 14:28:59 GMT",
"version": "v2"
},
{
"created": "Wed, 20 Mar 2019 16:52:30 GMT",
"version": "v3"
}
] | 2019-03-21 | [
[
"Maluf",
"J. W.",
""
],
[
"da Rocha-Neto",
"J. F.",
""
],
[
"Ulhoa",
"S. C.",
""
],
[
"Carneiro",
"F. L.",
""
]
] | A non-linear gravitational wave imparts gravitational acceleration to all particles that are hit by the wave. We evaluate this acceleration for particles in the pp-wave space-times, and integrate it numerically along the geodesic trajectories of the particles during the passage of a burst of gravitational wave. The tim... |
1208.1660 | Kourosh Nozari | J. Vahedi, Kourosh Nozari and P. Pedram | Generalized Uncertainty Principle and the Ramsauer-Townsend Effect | 11 pages, 3 figures | Gravitation and Cosmology 18, 211 (2012) | 10.1134/S0202289312030097 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The scattering cross section of electrons in noble gas atoms exhibits a
minimum value at electron energies of approximately 1eV. This is the
Ramsauer-Townsend effect. In this letter, we study the Ramsauer-Townsend effect
in the framework of the Generalized Uncertainty Principle.
| [
{
"created": "Wed, 8 Aug 2012 13:29:16 GMT",
"version": "v1"
}
] | 2015-06-11 | [
[
"Vahedi",
"J.",
""
],
[
"Nozari",
"Kourosh",
""
],
[
"Pedram",
"P.",
""
]
] | The scattering cross section of electrons in noble gas atoms exhibits a minimum value at electron energies of approximately 1eV. This is the Ramsauer-Townsend effect. In this letter, we study the Ramsauer-Townsend effect in the framework of the Generalized Uncertainty Principle. |
1912.06020 | Maciej Maliborski | Piotr T. Chru\'sciel and Maciej Maliborski and Nicol\'as Yunes | The structure of the singular ring in Kerr-like metrics | 27 pages, 8 figures, v2: matches published version | null | 10.1103/PhysRevD.101.104048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Kerr geometry is believed to represent the exterior spacetime of
astrophysical black holes. We here re-analyze the geometry of Kerr-like metrics
(Kerr, Kerr-Newman, Kerr-de Sitter, and Kerr-anti de Sitter), paying particular
attention to the region near the singular set. We find that, although the
Kretschmann sca... | [
{
"created": "Thu, 12 Dec 2019 15:16:52 GMT",
"version": "v1"
},
{
"created": "Thu, 28 May 2020 11:01:41 GMT",
"version": "v2"
}
] | 2020-05-29 | [
[
"Chruściel",
"Piotr T.",
""
],
[
"Maliborski",
"Maciej",
""
],
[
"Yunes",
"Nicolás",
""
]
] | The Kerr geometry is believed to represent the exterior spacetime of astrophysical black holes. We here re-analyze the geometry of Kerr-like metrics (Kerr, Kerr-Newman, Kerr-de Sitter, and Kerr-anti de Sitter), paying particular attention to the region near the singular set. We find that, although the Kretschmann scala... |
2009.00056 | Artur Miroszewski | Artur Miroszewski | Quantum dynamics in Weyl-Heisenberg coherent states | 18 pages, 3 figures; version 2: spelling mistakes corrected,
references updated | null | null | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The article explores a new formalism for describing motion in quantum
mechanics. The construction is based on generalized coherent states with
evolving fiducial vector. Weyl-Heisenberg coherent states are utilised to split
quantum systems into `classical' and `quantum' degrees of freedom. The
decomposition is found t... | [
{
"created": "Mon, 31 Aug 2020 18:47:24 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Sep 2020 08:46:18 GMT",
"version": "v2"
}
] | 2020-09-10 | [
[
"Miroszewski",
"Artur",
""
]
] | The article explores a new formalism for describing motion in quantum mechanics. The construction is based on generalized coherent states with evolving fiducial vector. Weyl-Heisenberg coherent states are utilised to split quantum systems into `classical' and `quantum' degrees of freedom. The decomposition is found to ... |
1512.03885 | Somenath Chakrabarty | Soma Mitra and Somenath Chakrabarty | Fermat's Principle in Curved Space-time, No Emission from Schwarzschild
Black Holes as Total Internal Reflection and Black Hole Unruh effect | 9 pages, no figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the Fermat's principle in curved space-time with stationary type
metric, we have obtained the speed of light as a function of spatial
coordinates and hence the corresponding refractive index. The whole region with
space dependent gravity is divided into a number of overlapping transparent
refracting media with ... | [
{
"created": "Sat, 12 Dec 2015 07:08:39 GMT",
"version": "v1"
}
] | 2015-12-15 | [
[
"Mitra",
"Soma",
""
],
[
"Chakrabarty",
"Somenath",
""
]
] | Using the Fermat's principle in curved space-time with stationary type metric, we have obtained the speed of light as a function of spatial coordinates and hence the corresponding refractive index. The whole region with space dependent gravity is divided into a number of overlapping transparent refracting media with va... |
1103.2388 | Branislav Cvetkovi\'c | M. Blagojevi\'c and B. Cvetkovi\'c | Extra gauge symmetries in BHT gravity | LATEX, 12 pages | JHEP 1103:139,2011 | 10.1007/JHEP03(2011)139 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the canonical structure of the Bergshoeff-Hohm-Townsend massive
gravity, linearized around a maximally symmetric background. At the critical
point in the space of parameters, defined by $\Lambda_0/m^2=-1$, we discover an
extra gauge symmetry, which reflects the existence of the partially massless
mode. The n... | [
{
"created": "Fri, 11 Mar 2011 22:18:12 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Apr 2011 12:10:20 GMT",
"version": "v2"
}
] | 2011-04-05 | [
[
"Blagojević",
"M.",
""
],
[
"Cvetković",
"B.",
""
]
] | We study the canonical structure of the Bergshoeff-Hohm-Townsend massive gravity, linearized around a maximally symmetric background. At the critical point in the space of parameters, defined by $\Lambda_0/m^2=-1$, we discover an extra gauge symmetry, which reflects the existence of the partially massless mode. The num... |
0704.3898 | Gamal Nashed G.L. | Gamal G.L. Nashed and Takeshi Shirafuji | Reissner-Nordstr\"om Spacetime in the Tetrad Theory of Gravitation | 16 pages, Latex | Int.J.Mod.Phys.D16:65,2007 | 10.1142/S0218271807009310 | null | gr-qc | null | We give two classes of spherically symmetric exact solutions of the couple
gravitational and electromagnetic fields with charged source in the tetrad
theory of gravitation. The first solution depends on an arbitrary function
$H({R},t)$. The second solution depends on a constant parameter $\eta$. These
solutions repro... | [
{
"created": "Mon, 30 Apr 2007 08:57:10 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Nashed",
"Gamal G. L.",
""
],
[
"Shirafuji",
"Takeshi",
""
]
] | We give two classes of spherically symmetric exact solutions of the couple gravitational and electromagnetic fields with charged source in the tetrad theory of gravitation. The first solution depends on an arbitrary function $H({R},t)$. The second solution depends on a constant parameter $\eta$. These solutions reprodu... |
1905.04973 | Rang Nitish | R. Nitish, Rohit K. Gupta, Supriya Kar | Perspectives of Perihelion Precession in Torsion Modified Gravity | IJMPD(In Press) | null | null | null | gr-qc astro-ph.EP hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Killing symmetries are revisited in $d$$=$$5$ bulk geometric torsion (GT)
perturbation theory to investigate the perihelion precession. Computation
reveals a non-perturbative (NP) modification to the precession known in General
Relativity (GR). Remarkably the analysis re-assures our proposed holographic
correspondenc... | [
{
"created": "Mon, 13 May 2019 11:19:59 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Jun 2020 06:44:57 GMT",
"version": "v2"
}
] | 2020-06-11 | [
[
"Nitish",
"R.",
""
],
[
"Gupta",
"Rohit K.",
""
],
[
"Kar",
"Supriya",
""
]
] | Killing symmetries are revisited in $d$$=$$5$ bulk geometric torsion (GT) perturbation theory to investigate the perihelion precession. Computation reveals a non-perturbative (NP) modification to the precession known in General Relativity (GR). Remarkably the analysis re-assures our proposed holographic correspondence ... |
1310.7499 | Eric Gourgoulhon | J.-P. Lasota, E. Gourgoulhon, M. Abramowicz, A. Tchekhovskoy, R.
Narayan | Extracting black-hole rotational energy: The generalized Penrose process | 24 pages, 14 figures, version published in Phys. Rev. D | Physical Review D 89, 024041 (2014) | 10.1103/PhysRevD.89.024041 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by-nc-sa/3.0/ | In the case involving particles the necessary and sufficient condition for
the Penrose process to extract energy from a rotating black hole is absorption
of particles with negative energies and angular momenta. No torque at the
black-hole horizon occurs. In this article we consider the case of arbitrary
fields or mat... | [
{
"created": "Mon, 28 Oct 2013 17:20:25 GMT",
"version": "v1"
},
{
"created": "Sun, 2 Feb 2014 21:24:56 GMT",
"version": "v2"
}
] | 2014-02-04 | [
[
"Lasota",
"J. -P.",
""
],
[
"Gourgoulhon",
"E.",
""
],
[
"Abramowicz",
"M.",
""
],
[
"Tchekhovskoy",
"A.",
""
],
[
"Narayan",
"R.",
""
]
] | In the case involving particles the necessary and sufficient condition for the Penrose process to extract energy from a rotating black hole is absorption of particles with negative energies and angular momenta. No torque at the black-hole horizon occurs. In this article we consider the case of arbitrary fields or matte... |
1109.1532 | Denitsa Staicova | Plamen Fiziev and Denitsa Staicova | Application of the confluent Heun functions for finding the quasinormal
modes of nonrotating black holes | 5 pages, 1 table, 2 figures. Final version published in Phys. Rev. D | Phys. Rev. D 84, 127502 (2011) | 10.1103/PhysRevD.84.127502 | SU-TH/7-09-2011 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Although finding numerically the quasinormal modes of a nonrotating black
hole is a well-studied question, the physics of the problem is often hidden
behind complicated numerical procedures aimed at avoiding the direct solution
of the spectral system in this case. In this article, we use the exact
analytical solution... | [
{
"created": "Wed, 7 Sep 2011 18:33:59 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Oct 2011 21:04:55 GMT",
"version": "v2"
},
{
"created": "Thu, 22 Dec 2011 21:42:15 GMT",
"version": "v3"
}
] | 2011-12-26 | [
[
"Fiziev",
"Plamen",
""
],
[
"Staicova",
"Denitsa",
""
]
] | Although finding numerically the quasinormal modes of a nonrotating black hole is a well-studied question, the physics of the problem is often hidden behind complicated numerical procedures aimed at avoiding the direct solution of the spectral system in this case. In this article, we use the exact analytical solutions ... |
1307.6793 | Alejandro Bohe | Sylvain Marsat, Alejandro Bohe, Luc Blanchet, Alessandra Buonanno | Next-to-leading tail-induced spin-orbit effects in the gravitational
radiation flux of compact binaries | 22 pages, 1 figure; replaced to match the published version, two
references added | Class. Quantum Grav. 31 (2014) 025023 | 10.1088/0264-9381/31/2/025023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The imprint of non-linearities in the propagation of gravitational waves ---
the tail effect --- is responsible for new spin contributions to the energy
flux and orbital phasing of spinning black hole binaries. The spin-orbit
(linear in spin) contribution to this effect is currently known at leading
post-Newtonian or... | [
{
"created": "Thu, 25 Jul 2013 15:30:58 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Dec 2013 17:20:04 GMT",
"version": "v2"
}
] | 2013-12-24 | [
[
"Marsat",
"Sylvain",
""
],
[
"Bohe",
"Alejandro",
""
],
[
"Blanchet",
"Luc",
""
],
[
"Buonanno",
"Alessandra",
""
]
] | The imprint of non-linearities in the propagation of gravitational waves --- the tail effect --- is responsible for new spin contributions to the energy flux and orbital phasing of spinning black hole binaries. The spin-orbit (linear in spin) contribution to this effect is currently known at leading post-Newtonian orde... |
2406.00351 | Debojit Paul ` | Debojit Paul and Sanjeev Kalita | Solar system consistency of $f(R)$ gravity theory and its MOND
equivalence | 8 pages, 7 figures, 4 tables, Comments are welcomed | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Since last two decades $f(R)$ gravity theory has been extensively used as a
serious alternative of general relativity to mimic the effects of dark energy.
The theory presents a Yukawa correction to Newtonian gravitational potential,
acting as a fifth force of Nature. Generally speaking, this new force is
mediated by ... | [
{
"created": "Sat, 1 Jun 2024 08:05:20 GMT",
"version": "v1"
}
] | 2024-06-04 | [
[
"Paul",
"Debojit",
""
],
[
"Kalita",
"Sanjeev",
""
]
] | Since last two decades $f(R)$ gravity theory has been extensively used as a serious alternative of general relativity to mimic the effects of dark energy. The theory presents a Yukawa correction to Newtonian gravitational potential, acting as a fifth force of Nature. Generally speaking, this new force is mediated by a ... |
1711.01643 | Ignacio Salazar | Nicolas Grandi, Ignacio Salazar Landea | Scalar Hair Around Charged Black Holes in Einstein-Gauss-Bonnet Gravity | 22 pages, 7 figures. v2: Improved discussion. Improved section IV.
PRD refereed version | Phys. Rev. D 97, 044042 (2018) | 10.1103/PhysRevD.97.044042 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore charged black hole solutions in Einstein-Gauss-Bonnet gravity in
five dimensions, with a charged scalar hair. We interpret such hairy black
holes as the final state of the superradiant instability previously reported
for this system. We explore the relation of the hairy black hole solutions with
the non-ba... | [
{
"created": "Sun, 5 Nov 2017 19:09:49 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Feb 2018 18:06:54 GMT",
"version": "v2"
}
] | 2018-03-07 | [
[
"Grandi",
"Nicolas",
""
],
[
"Landea",
"Ignacio Salazar",
""
]
] | We explore charged black hole solutions in Einstein-Gauss-Bonnet gravity in five dimensions, with a charged scalar hair. We interpret such hairy black holes as the final state of the superradiant instability previously reported for this system. We explore the relation of the hairy black hole solutions with the non-back... |
gr-qc/9807012 | Zloshchastiev Konstantin | Konstantin G. Zloshchastiev | Extended particle models based on hollow singular hypersurfaces in
general relativity: Classical and quantum aspects of charged textures | I try to unitarily answer both the question "Can sub-lepton/hadron
matter be of topological nature" and "What is the origin of cosmic textures
and pre-lepton-hadron phase in the early Universe"; slightly shortened
version (v2) was published in IJMPD | Int.J.Mod.Phys. D8 (1999) 165-176 | 10.1142/S0218271899000158 | null | gr-qc hep-ph hep-th | null | In present paper we construct classical and quantum models of an extended
charged particle. One shows that consecutive modelling can be based on the
hollow thin-wall charged texture (in the hydrodynamical approach of a perfect
fluid) which acquires gravitational mass due to Einstein-Maxwell interaction.
We demonstrat... | [
{
"created": "Mon, 6 Jul 1998 15:02:58 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Apr 1999 04:05:20 GMT",
"version": "v2"
},
{
"created": "Wed, 1 Sep 1999 07:51:28 GMT",
"version": "v3"
},
{
"created": "Mon, 4 Oct 1999 13:08:15 GMT",
"version": "v4"
}
] | 2009-10-31 | [
[
"Zloshchastiev",
"Konstantin G.",
""
]
] | In present paper we construct classical and quantum models of an extended charged particle. One shows that consecutive modelling can be based on the hollow thin-wall charged texture (in the hydrodynamical approach of a perfect fluid) which acquires gravitational mass due to Einstein-Maxwell interaction. We demonstrate ... |
2105.09166 | Francisco Fernández-Ãlvarez | Francisco Fern\'andez-\'Alvarez and Jos\'e M. M. Senovilla | Asymptotic Structure with vanishing cosmological constant | 45 pages, first of two papers, minor corrections, accepted version
for publication | Class. Quant. Grav. 39 165011 2022 | 10.1088/1361-6382/ac387e | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is the first of two papers devoted to the asymptotic structure of
space-time in the presence of a non-negative cosmological constant $\Lambda$.
This first paper is concerned with the case of $\Lambda =0$. Our approach is
fully based on the tidal nature of the gravitational field and therefore on the
`tidal energ... | [
{
"created": "Wed, 19 May 2021 14:36:12 GMT",
"version": "v1"
},
{
"created": "Thu, 20 May 2021 15:53:28 GMT",
"version": "v2"
},
{
"created": "Mon, 21 Jun 2021 14:31:14 GMT",
"version": "v3"
},
{
"created": "Tue, 23 Nov 2021 19:40:44 GMT",
"version": "v4"
}
] | 2022-08-23 | [
[
"Fernández-Álvarez",
"Francisco",
""
],
[
"Senovilla",
"José M. M.",
""
]
] | This is the first of two papers devoted to the asymptotic structure of space-time in the presence of a non-negative cosmological constant $\Lambda$. This first paper is concerned with the case of $\Lambda =0$. Our approach is fully based on the tidal nature of the gravitational field and therefore on the `tidal energie... |
2209.09620 | Joseph Johnson PhD | Joseph E. Johnson | Riemannian Geometry Framed as a Generalized Lie Algebra to Incorporate
General Relativity with Quantum Theory 1 | 13 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper reframes Riemannian geometry as a generalized Lie algebra allowing
the equations of both RG and then General Relativity to be expressed as
commutation relations among fundamental operators. We begin with an Abelian Lie
algebra of n operators, X, whose simultaneous eigenvalues, y, define a real
n-dimensiona... | [
{
"created": "Fri, 16 Sep 2022 21:13:58 GMT",
"version": "v1"
}
] | 2022-09-21 | [
[
"Johnson",
"Joseph E.",
""
]
] | This paper reframes Riemannian geometry as a generalized Lie algebra allowing the equations of both RG and then General Relativity to be expressed as commutation relations among fundamental operators. We begin with an Abelian Lie algebra of n operators, X, whose simultaneous eigenvalues, y, define a real n-dimensional ... |
gr-qc/9910096 | Gerard Clement | Gerard Clement | Generating rotating fields in general relativity | 8 pages, talk presented at the 10th Russian Gravitational Conference
(Vladimir, June 1999) | Grav.Cosmol. 5 (1999) 281-284 | null | null | gr-qc hep-th | null | I present a new method to generate rotating solutions of the Einstein-Maxwell
equations from static solutions, give several examples of its application, and
discuss its general properties.
| [
{
"created": "Tue, 26 Oct 1999 12:47:19 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Clement",
"Gerard",
""
]
] | I present a new method to generate rotating solutions of the Einstein-Maxwell equations from static solutions, give several examples of its application, and discuss its general properties. |
gr-qc/9610003 | null | Pedro F. Gonzalez-Diaz (IMAFF, Madrid, Spain) | On the black-hole kink | 20 pages, LaTex, to appear in Int. J. Mod. Phys. D | Int.J.Mod.Phys. D6 (1997) 57-68 | 10.1142/S0218271897000054 | IMAFF-RCA-96-05 | gr-qc | null | By allowing the light cones to tip over on hypersurfaces according to the
conservation laws of an one-kink in static, Schwarzschild black hole metric, we
show that in the quantum regime there also exist instantons whose finite
imaginary action gives the probability of occurrence of the kink metric
corresponding to si... | [
{
"created": "Tue, 1 Oct 1996 17:39:34 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Gonzalez-Diaz",
"Pedro F.",
"",
"IMAFF, Madrid, Spain"
]
] | By allowing the light cones to tip over on hypersurfaces according to the conservation laws of an one-kink in static, Schwarzschild black hole metric, we show that in the quantum regime there also exist instantons whose finite imaginary action gives the probability of occurrence of the kink metric corresponding to sing... |
2201.02543 | Zhenwei Lyu | Zhenwei Lyu and Nan Jiang and Kent Yagi | Constraints on Einstein-dilaton-Gauss-Bonnet gravity from Black
Hole-Neutron Star Gravitational Wave Events | 12 pages, 5 figures | Phys. Rev. D 105, 064001 (2022), Erratum Phys. Rev. D 106, 069901
(2022) | 10.1103/PhysRevD.105.064001 | LIGO-P2100466 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Recent gravitational wave observations allow us to probe gravity in the
strong and dynamical field regime. In this paper, we focus on testing
Einstein-dilaton Gauss-Bonnet gravity which is motivated by string theory. In
particular, we use two new neutron star black hole binaries (GW200105 and
GW200115). We also consi... | [
{
"created": "Fri, 7 Jan 2022 17:02:57 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Feb 2022 17:36:53 GMT",
"version": "v2"
},
{
"created": "Fri, 2 Sep 2022 13:38:36 GMT",
"version": "v3"
},
{
"created": "Wed, 24 May 2023 17:09:47 GMT",
"version": "v4"
},
{
"cre... | 2023-08-03 | [
[
"Lyu",
"Zhenwei",
""
],
[
"Jiang",
"Nan",
""
],
[
"Yagi",
"Kent",
""
]
] | Recent gravitational wave observations allow us to probe gravity in the strong and dynamical field regime. In this paper, we focus on testing Einstein-dilaton Gauss-Bonnet gravity which is motivated by string theory. In particular, we use two new neutron star black hole binaries (GW200105 and GW200115). We also conside... |
2312.03487 | Alexey Nenashev | A. V. Nenashev and S. D. Baranovskii | How to detect the spacetime curvature without rulers and clocks. II.
Three-dimensional spacetime | This is paper #2 in a series; paper #1 is arXiv:2302.12209 | null | null | null | gr-qc math.DG | http://creativecommons.org/licenses/by/4.0/ | We have generalized the results of the previous work [arXiv:2302.12209] to
the case of three-dimensional (3D) spacetime with two spatial and one temporal
coordinates. We have found that the flat Minkowski 3D spacetime is
"well-stitched", which means that it possesses a structure described by 24
causal relations betwe... | [
{
"created": "Wed, 6 Dec 2023 13:30:32 GMT",
"version": "v1"
}
] | 2023-12-07 | [
[
"Nenashev",
"A. V.",
""
],
[
"Baranovskii",
"S. D.",
""
]
] | We have generalized the results of the previous work [arXiv:2302.12209] to the case of three-dimensional (3D) spacetime with two spatial and one temporal coordinates. We have found that the flat Minkowski 3D spacetime is "well-stitched", which means that it possesses a structure described by 24 causal relations between... |
2401.15435 | Yangting Liu Dr. | Yangting Liu | Research on the application of loop quantum theory model in black hole
quantum information | 43pages,15figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An important reason why it is currently difficult to unify relativity theory
and quantum theory is the quantum information paradox. The information
engulfment pointed out by general relativity violates the principles of quantum
mechanics. An important reason why the industry does not have a clear
understanding of thi... | [
{
"created": "Sat, 27 Jan 2024 15:06:14 GMT",
"version": "v1"
}
] | 2024-01-30 | [
[
"Liu",
"Yangting",
""
]
] | An important reason why it is currently difficult to unify relativity theory and quantum theory is the quantum information paradox. The information engulfment pointed out by general relativity violates the principles of quantum mechanics. An important reason why the industry does not have a clear understanding of this ... |
1311.7409 | Joanna Ja{\l}mu\.zna | Joanna Ja{\l}mu\.zna | Three-dimensional gravity and instability of $\text{AdS}_{3}$ | 21 pages, 6 figures | null | 10.5506/APhysPolB.44.2603 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This is an extended version of my lecture at the LIII Cracow School of
Theoretical Physics in Zakopane in which I presented the results of joint work
with Piotr Bizo\'n concerning (in)stability of the three-dimensional anti-de
Sitter spacetime.
| [
{
"created": "Thu, 28 Nov 2013 19:51:45 GMT",
"version": "v1"
}
] | 2015-06-18 | [
[
"Jałmużna",
"Joanna",
""
]
] | This is an extended version of my lecture at the LIII Cracow School of Theoretical Physics in Zakopane in which I presented the results of joint work with Piotr Bizo\'n concerning (in)stability of the three-dimensional anti-de Sitter spacetime. |
0808.2299 | Mikhail V. Gorbatenko | M.V.Gorbatenko, T.M.Gorbatenko | Dirac particle in gravitation field | 13 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Being considered is the motion of Dirac particle in gravitational field,
described by Kerr solution. It is proved, that evolution of the wave function
is determined by Hermitian Hamiltonian, if the concomitant reference frame is
involved.
| [
{
"created": "Sun, 17 Aug 2008 16:46:56 GMT",
"version": "v1"
}
] | 2008-08-19 | [
[
"Gorbatenko",
"M. V.",
""
],
[
"Gorbatenko",
"T. M.",
""
]
] | Being considered is the motion of Dirac particle in gravitational field, described by Kerr solution. It is proved, that evolution of the wave function is determined by Hermitian Hamiltonian, if the concomitant reference frame is involved. |
1806.00620 | Saheb Soroushfar | Saheb Soroushfar and Maryam Afrooz | Analytical solutions of the geodesic equation in the space-time of a
black hole surrounded by perfect fluid in Rastall theory | 25 pages, 46 figures, 7 tables | Indian J Phys (2021) | 10.1007/s12648-020-01971-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the geodesic motion of massive and massless
test particles in the vicinity of a black hole space-time surrounded by perfect
fluid (quintessence, dust, radiation, cosmological constant and phantom) in
Rastall theory. We obtain the full set of analytical solutions of the geodesic
equation ... | [
{
"created": "Sat, 2 Jun 2018 11:16:17 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Jun 2019 09:33:30 GMT",
"version": "v2"
},
{
"created": "Wed, 4 Mar 2020 04:34:34 GMT",
"version": "v3"
}
] | 2021-02-15 | [
[
"Soroushfar",
"Saheb",
""
],
[
"Afrooz",
"Maryam",
""
]
] | In this paper, we investigate the geodesic motion of massive and massless test particles in the vicinity of a black hole space-time surrounded by perfect fluid (quintessence, dust, radiation, cosmological constant and phantom) in Rastall theory. We obtain the full set of analytical solutions of the geodesic equation of... |
2004.10139 | Diego S\'aez-Chill\'on G\'omez | Ismael Ayuso and Diego S\'aez-Chill\'on G\'omez | Extremal cosmological black holes in Horndeski gravity and the
anti-evaporation regime | 15 pages, version published | Universe 2020, 6(11), 210 | 10.3390/universe6110210 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Extremal cosmological black holes are analysed in the framework of the most
general second order scalar-tensor theory, the~so-called Horndeski gravity.
Such~extremal black holes are a particular case of Schwarzschild-De Sitter
black holes that arises when the black hole horizon and the cosmological one
coincide. Such... | [
{
"created": "Tue, 21 Apr 2020 16:29:33 GMT",
"version": "v1"
},
{
"created": "Tue, 17 Nov 2020 20:30:30 GMT",
"version": "v2"
}
] | 2020-11-19 | [
[
"Ayuso",
"Ismael",
""
],
[
"Gómez",
"Diego Sáez-Chillón",
""
]
] | Extremal cosmological black holes are analysed in the framework of the most general second order scalar-tensor theory, the~so-called Horndeski gravity. Such~extremal black holes are a particular case of Schwarzschild-De Sitter black holes that arises when the black hole horizon and the cosmological one coincide. Such~m... |
1402.2481 | Antoine Folacci | Yves Decanini, Antoine Folacci and Mohamed Ould El Hadj | Resonant excitation of black holes by massive bosonic fields and giant
ringings | v1 : We extend to massive bosonic fields our work concerning resonant
excitation of BHs in massive gravity arXiv:1401.0321[gr-qc]. v2 : Minor
changes to match the published version | Phys. Rev. D 89, 084066 (2014) | 10.1103/PhysRevD.89.084066 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the massive scalar field, the Proca field and the Fierz-Pauli
field in the Schwarzschild spacetime and we focus more particularly on their
long-lived quasinormal modes. We show numerically that the associated
excitation factors have a strong resonant behavior and we confirm this result
analytically from s... | [
{
"created": "Tue, 11 Feb 2014 13:07:54 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Mar 2014 15:15:11 GMT",
"version": "v2"
}
] | 2014-04-23 | [
[
"Decanini",
"Yves",
""
],
[
"Folacci",
"Antoine",
""
],
[
"Hadj",
"Mohamed Ould El",
""
]
] | We consider the massive scalar field, the Proca field and the Fierz-Pauli field in the Schwarzschild spacetime and we focus more particularly on their long-lived quasinormal modes. We show numerically that the associated excitation factors have a strong resonant behavior and we confirm this result analytically from sem... |
2404.15203 | Ayesha Almas | Adnan Malik, Amjad Hussain, M. Farasat Shamir, Ayesha Almas | Impact of Ricci Inverse Gravity on Hybrid Star Model | 21 pages, 9 figures, Submitted for publication | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The objective of our current study is to explore novel aspects of a
stationary anisotropic relativistic hybrid compact star that consists of quark
matter (QM) in its core and ordinary baryonic matter (OBM) in its crust. This
study has been done by adopting separate equations of states (EoSs) for quark
matter and bary... | [
{
"created": "Tue, 23 Apr 2024 16:37:19 GMT",
"version": "v1"
}
] | 2024-04-24 | [
[
"Malik",
"Adnan",
""
],
[
"Hussain",
"Amjad",
""
],
[
"Shamir",
"M. Farasat",
""
],
[
"Almas",
"Ayesha",
""
]
] | The objective of our current study is to explore novel aspects of a stationary anisotropic relativistic hybrid compact star that consists of quark matter (QM) in its core and ordinary baryonic matter (OBM) in its crust. This study has been done by adopting separate equations of states (EoSs) for quark matter and baryon... |
2003.13591 | Jonathan Luk | Grigorios Fournodavlos, Jonathan Luk | Asymptotically Kasner-like singularities | 57 pages; minor corrections | null | null | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove existence, uniqueness and regularity of solutions to the Einstein
vacuum equations taking the form $${^{(4)}g} = -dt^2 + \sum_{i,j = 1}^3
a_{ij}t^{2p_{\max\{i,j\}}}\, \mathrm{d} x^i\, \mathrm{d} x^j$$ on $(0,T]_t
\times \mathbb T^3_x$, where $a_{ij}(t,x)$ and $p_i(x)$ are regular functions
without symmetry o... | [
{
"created": "Mon, 30 Mar 2020 16:18:22 GMT",
"version": "v1"
},
{
"created": "Tue, 17 May 2022 16:45:17 GMT",
"version": "v2"
}
] | 2022-05-18 | [
[
"Fournodavlos",
"Grigorios",
""
],
[
"Luk",
"Jonathan",
""
]
] | We prove existence, uniqueness and regularity of solutions to the Einstein vacuum equations taking the form $${^{(4)}g} = -dt^2 + \sum_{i,j = 1}^3 a_{ij}t^{2p_{\max\{i,j\}}}\, \mathrm{d} x^i\, \mathrm{d} x^j$$ on $(0,T]_t \times \mathbb T^3_x$, where $a_{ij}(t,x)$ and $p_i(x)$ are regular functions without symmetry or ... |
0708.2984 | Nils Andersson | B. Haskell, N. Andersson, D. I. Jones and L. Samuelsson | Are neutron stars with crystalline colour superconducting cores
interesting for the LIGO experiment? | published as Physical Review Letters, vol. 99, Issue 23, id. 231101 | null | 10.1103/PhysRevLett.99.231101 | null | gr-qc astro-ph | null | We estimate the maximal deformation that can be sustained by a rotating
neutron star with a crystalline colour superconducting quark core. Our results
suggest that current gravitational-wave data from LIGO have already reached the
level where a detection would have been possible over a wide range of the
poorly constr... | [
{
"created": "Wed, 22 Aug 2007 10:16:36 GMT",
"version": "v1"
},
{
"created": "Fri, 16 May 2008 14:54:30 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Haskell",
"B.",
""
],
[
"Andersson",
"N.",
""
],
[
"Jones",
"D. I.",
""
],
[
"Samuelsson",
"L.",
""
]
] | We estimate the maximal deformation that can be sustained by a rotating neutron star with a crystalline colour superconducting quark core. Our results suggest that current gravitational-wave data from LIGO have already reached the level where a detection would have been possible over a wide range of the poorly constrai... |
2207.02771 | Michele Mancarella | Francesco Iacovelli, Michele Mancarella, Stefano Foffa, Michele
Maggiore | Forecasting the detection capabilities of third-generation
gravitational-wave detectors using $\texttt{GWFAST}$ | 43 + 12 pages, 24 + 5 Figures, $\texttt{GWFAST}$ available at
https://github.com/CosmoStatGW/gwfast, $\texttt{WF4Py}$ available at
https://github.com/CosmoStatGW/WF4Py. v3: resubmitted to APJ, minor changes
in results, Appendix C added | null | 10.3847/1538-4357/ac9cd4 | null | gr-qc astro-ph.CO astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We introduce $\texttt{GWFAST}$, a novel Fisher-matrix code for
gravitational-wave studies, tuned toward third-generation gravitational-wave
detectors such as Einstein Telescope (ET) and Cosmic Explorer (CE). We use it
to perform a comprehensive study of the capabilities of ET alone, and of a
network made by ET and tw... | [
{
"created": "Wed, 6 Jul 2022 16:04:23 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Jul 2022 15:56:23 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Sep 2022 14:05:06 GMT",
"version": "v3"
}
] | 2023-01-02 | [
[
"Iacovelli",
"Francesco",
""
],
[
"Mancarella",
"Michele",
""
],
[
"Foffa",
"Stefano",
""
],
[
"Maggiore",
"Michele",
""
]
] | We introduce $\texttt{GWFAST}$, a novel Fisher-matrix code for gravitational-wave studies, tuned toward third-generation gravitational-wave detectors such as Einstein Telescope (ET) and Cosmic Explorer (CE). We use it to perform a comprehensive study of the capabilities of ET alone, and of a network made by ET and two ... |
2003.00455 | Miguel Angel Javaloyes | Antonio Bernal, Miguel \'Angel Javaloyes, Miguel S\'anchez | Foundations of Finsler spacetimes from the Observers' Viewpoint | v2: 47 pages, new section 5.2.5, added seven references and minor
changes | Universe 2020, 6(4), 55 | 10.3390/universe6040055 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Physical foundations for relativistic spacetimes are revisited, in order to
check at what extent Finsler spacetimes lie in their framework. Arguments based
on inertial observers (as in the foundations of Special Relativity and
Classical Mechanics) are shown to correspond with a double linear approximation
in the meas... | [
{
"created": "Sun, 1 Mar 2020 10:04:01 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Apr 2020 17:16:55 GMT",
"version": "v2"
}
] | 2020-04-21 | [
[
"Bernal",
"Antonio",
""
],
[
"Javaloyes",
"Miguel Ángel",
""
],
[
"Sánchez",
"Miguel",
""
]
] | Physical foundations for relativistic spacetimes are revisited, in order to check at what extent Finsler spacetimes lie in their framework. Arguments based on inertial observers (as in the foundations of Special Relativity and Classical Mechanics) are shown to correspond with a double linear approximation in the measur... |
gr-qc/0311079 | Adam Szereszewski | Adam Szereszewski, Jacek Tafel | From 2-Dimensional Surfaces to Cosmological Solutions | 12 pages, no figures, LaTeX2e, to be published in Class. Quant. Grav | Gen.Rel.Grav. 37 (2005) 257-269 | 10.1007/s10714-005-0016-0 | null | gr-qc | null | We construct perfect fluid metrics corresponding to spacelike surfaces
invariant under a 1-dimensional group of isometries in 3-dimensional Minkowski
space. Under additional assumptions we obtain new cosmological solutions of
Bianchi type II, VI_0 and VII_0. The solutions depend on an arbitrary function
of time, whic... | [
{
"created": "Mon, 24 Nov 2003 13:22:14 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Szereszewski",
"Adam",
""
],
[
"Tafel",
"Jacek",
""
]
] | We construct perfect fluid metrics corresponding to spacelike surfaces invariant under a 1-dimensional group of isometries in 3-dimensional Minkowski space. Under additional assumptions we obtain new cosmological solutions of Bianchi type II, VI_0 and VII_0. The solutions depend on an arbitrary function of time, which ... |
gr-qc/0204012 | Chiao | Raymond Y. Chiao | Superconductors as quantum transducers and antennas for gravitational
and electromagnetic radiation | 21 pages, 3 figures, abbreviated writeup of my March 23, 2002 Wheeler
Symposium lecture, and book chapter for Wheeler Festschrift; submitted to PRD | null | null | null | gr-qc | null | Superconductors will be considered as macroscopic quantum gravitational
antennas and transducers, which can directly convert upon reflection a beam of
quadrupolar electromagnetic radiation into gravitational radiation, and vice
versa, and thus serve as practical laboratory sources and receivers of
microwave and other... | [
{
"created": "Tue, 2 Apr 2002 21:20:03 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Apr 2002 22:32:09 GMT",
"version": "v2"
},
{
"created": "Mon, 29 Jul 2002 19:57:02 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Chiao",
"Raymond Y.",
""
]
] | Superconductors will be considered as macroscopic quantum gravitational antennas and transducers, which can directly convert upon reflection a beam of quadrupolar electromagnetic radiation into gravitational radiation, and vice versa, and thus serve as practical laboratory sources and receivers of microwave and other r... |
gr-qc/0006031 | Yasusada Nambu | Yasusada Nambu | Renormalization Group Approach to Cosmological Back Reaction Problems | 18 pages, revtex, to appear in Phys. Rev. D | Phys.Rev. D62 (2000) 104010 | 10.1103/PhysRevD.62.104010 | DPNU-00-10 | gr-qc astro-ph | null | We investigated the back reaction of cosmological perturbations on the
evolution of the universe using the second order perturbation of the Einstein's
equation. To incorporate the back reaction effect due to the inhomogeneity into
the framework of the cosmological perturbation, we used the renormalization
group metho... | [
{
"created": "Fri, 9 Jun 2000 00:48:57 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Nambu",
"Yasusada",
""
]
] | We investigated the back reaction of cosmological perturbations on the evolution of the universe using the second order perturbation of the Einstein's equation. To incorporate the back reaction effect due to the inhomogeneity into the framework of the cosmological perturbation, we used the renormalization group method.... |
gr-qc/0610068 | George Sparling | George A.J. Sparling | Spacetime is spinorial; new dimensions are timelike | 9 pages; the stripped down version | null | null | null | gr-qc | null | A new theory of fundamental physics is presented; it predicts that the new
dimensions that may be observed by the Large Hadron Collider are timelike.
| [
{
"created": "Fri, 13 Oct 2006 03:35:00 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sparling",
"George A. J.",
""
]
] | A new theory of fundamental physics is presented; it predicts that the new dimensions that may be observed by the Large Hadron Collider are timelike. |
gr-qc/9304028 | null | Gerhard Rein | Static solutions of the spherically symmetric Vlasov-Einstein system | 20 pages, Latex, report # 1 | null | 10.1017/S0305004100072303 | null | gr-qc | null | The Vlasov-Einstein system describes the evolution of an ensemble of
particles (such as stars in a galaxy, galaxies in a galaxy cluster etc.)
interacting only by the gravitational field which they create collectively and
which obeys Einstein's field equations. The matter distribution is described by
the Vlasov or Lio... | [
{
"created": "Tue, 20 Apr 1993 10:19:06 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Rein",
"Gerhard",
""
]
] | The Vlasov-Einstein system describes the evolution of an ensemble of particles (such as stars in a galaxy, galaxies in a galaxy cluster etc.) interacting only by the gravitational field which they create collectively and which obeys Einstein's field equations. The matter distribution is described by the Vlasov or Liouv... |
2204.13044 | Ningchen Bai | Ningchen Bai, Aoyun He, Jun Tao | Microstructure of Charged AdS Black Hole with Minimal Length Effects | 29 pages, 10 figures | null | 10.1088/1674-1137/ac8e53 | CTP-SCU/2022005 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, the microstructure of charged AdS black holes under minimal
length effects is investigated. We study the thermodynamics of black holes in
the extended phase space, where the cosmological constant is regarded as the
thermodynamic pressure. The modified Hawking temperature and phase transition
are obtaine... | [
{
"created": "Wed, 27 Apr 2022 16:36:57 GMT",
"version": "v1"
},
{
"created": "Wed, 11 May 2022 15:51:17 GMT",
"version": "v2"
}
] | 2022-12-14 | [
[
"Bai",
"Ningchen",
""
],
[
"He",
"Aoyun",
""
],
[
"Tao",
"Jun",
""
]
] | In this work, the microstructure of charged AdS black holes under minimal length effects is investigated. We study the thermodynamics of black holes in the extended phase space, where the cosmological constant is regarded as the thermodynamic pressure. The modified Hawking temperature and phase transition are obtained ... |
gr-qc/9702032 | Cai Rong-gen | Rong-Gen Cai, Zhi-Jiang Lu and Yuan-Zhong Zhang (ITP, Beijing, China) | Critical behavior in 2+1 dimensional black holes | RevTex, 9 pages, nofigure | Phys.Rev.D55:853-860,1997 | 10.1103/PhysRevD.55.853 | null | gr-qc | null | The critical behavior and phase transition in the 2+1 dimensional Ba\~nados,
Teitelboim, and Zanelli (BTZ) black holes are discussed. By calculating the
equilibrium thermodynamic fluctuations in the microcanonical ensemble,
canonical ensemble, and grand canonical ensemble, respectively, we find that
the extremal spin... | [
{
"created": "Tue, 18 Feb 1997 09:49:48 GMT",
"version": "v1"
}
] | 2019-08-17 | [
[
"Cai",
"Rong-Gen",
"",
"ITP, Beijing, China"
],
[
"Lu",
"Zhi-Jiang",
"",
"ITP, Beijing, China"
],
[
"Zhang",
"Yuan-Zhong",
"",
"ITP, Beijing, China"
]
] | The critical behavior and phase transition in the 2+1 dimensional Ba\~nados, Teitelboim, and Zanelli (BTZ) black holes are discussed. By calculating the equilibrium thermodynamic fluctuations in the microcanonical ensemble, canonical ensemble, and grand canonical ensemble, respectively, we find that the extremal spinni... |
gr-qc/9302034 | null | M.C. Bento, O. Bertolami, P.V. Moniz, J.M. Mourao and P.M. S\'a | On the Cosmology of Massive Vector Fields with SO(3) Global Symmetry | 19 pages, plain tex, DF/IST-3/92 and DFFCUL 03-5/1992 | Class.Quant.Grav.10:285-298,1993 | 10.1088/0264-9381/10/2/010 | null | gr-qc | null | A relevant reference ([14]) has been added.
| [
{
"created": "Tue, 23 Feb 1993 19:48:44 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Mar 1993 11:22:17 GMT",
"version": "v2"
}
] | 2010-04-06 | [
[
"Bento",
"M. C.",
""
],
[
"Bertolami",
"O.",
""
],
[
"Moniz",
"P. V.",
""
],
[
"Mourao",
"J. M.",
""
],
[
"Sá",
"P. M.",
""
]
] | A relevant reference ([14]) has been added. |
2007.11567 | Richard Woodard | A. Sivasankaran and R. P. Woodard | Inflaton Effective Potential from Fermions for General $\epsilon$ | 25 pages, 9 figures, uses LaTeX2e. Version 2 (32 pages, 11 figures)
substantially revised to provide a detailed comparison between the effective
potential and the classical potential, and to explain the tendency for smooth
potentials to favor high reheat temperatures | Phys. Rev. D 103, 125013 (2021) | 10.1103/PhysRevD.103.125013 | UFIFT-QG-20-04 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We accurately approximate the contribution of a Yukawa-coupled fermion to the
inflaton effective potential for inflationary geometries with a general first
slow roll parameter $\epsilon(t)$. For $\epsilon = 0$ our final result agrees
with the famous computation of Candelas and Raine done long ago on de Sitter
backgro... | [
{
"created": "Wed, 22 Jul 2020 17:44:48 GMT",
"version": "v1"
},
{
"created": "Wed, 23 Jun 2021 17:09:00 GMT",
"version": "v2"
}
] | 2021-06-30 | [
[
"Sivasankaran",
"A.",
""
],
[
"Woodard",
"R. P.",
""
]
] | We accurately approximate the contribution of a Yukawa-coupled fermion to the inflaton effective potential for inflationary geometries with a general first slow roll parameter $\epsilon(t)$. For $\epsilon = 0$ our final result agrees with the famous computation of Candelas and Raine done long ago on de Sitter backgroun... |
1606.06242 | Julio Cesar Fabris | K.A. Bronnikov, J.C. Fabris, O.F. Piattella, E.C. Santos | Static, spherically symmetric solutions with a scalar field in Rastall
gravity | Latex file, 18 pages. To fit published version | Gen.Rel.Grav. 48 (2016) no.12, 162 | 10.1007/s10714-016-2152-0 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Rastall's theory belongs to the class of non-conservative theories of
gravity. In vacuum, the only non-trivial static, spherically symmetric solution
is the Schwarzschild one, except in a very special case. When a canonical
scalar field is coupled to the gravity sector in this theory, new exact
solutions appear for s... | [
{
"created": "Mon, 20 Jun 2016 18:50:48 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Mar 2017 19:25:28 GMT",
"version": "v2"
}
] | 2017-03-03 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Fabris",
"J. C.",
""
],
[
"Piattella",
"O. F.",
""
],
[
"Santos",
"E. C.",
""
]
] | Rastall's theory belongs to the class of non-conservative theories of gravity. In vacuum, the only non-trivial static, spherically symmetric solution is the Schwarzschild one, except in a very special case. When a canonical scalar field is coupled to the gravity sector in this theory, new exact solutions appear for som... |
gr-qc/9708021 | Dmitry Kalinin | D. A. Kalinin (Kazan State University) | Large Quantum mechanics in curved space and quantization of polynomial
Hamiltonians | 15 pages, LaTeX | null | null | KSU-GRG-97-12 | gr-qc | null | The quantization of a single particle without spin in an appropriate curved
space-time is considered. The Hamilton formalism on reduced space for a
particle in a curved space-time is constructed and the main aspects of
quantization scheme are developed. These investigations are applied to
quantization of the particle... | [
{
"created": "Mon, 11 Aug 1997 11:09:51 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kalinin",
"D. A.",
"",
"Kazan State University"
]
] | The quantization of a single particle without spin in an appropriate curved space-time is considered. The Hamilton formalism on reduced space for a particle in a curved space-time is constructed and the main aspects of quantization scheme are developed. These investigations are applied to quantization of the particle H... |
2212.03573 | Jaiyul Yoo | Jaiyul Yoo (Z\"urich) | Incompatibility of Standard Galaxy Bias Models in General Relativity | 16 pages, 1 figure, published in JCAP | JCAP 10 (2023) 054 | 10.1088/1475-7516/2023/10/054 | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | The standard model for galaxy bias is built in a Newtonian framework, and
several attempts have been made in the past to put it in a relativistic
framework. The focus of past works was, however, to use the same Newtonian
formulation, but to provide its interpretation in a relativistic framework by
either fixing a gau... | [
{
"created": "Wed, 7 Dec 2022 11:19:32 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Apr 2023 10:52:38 GMT",
"version": "v2"
},
{
"created": "Thu, 19 Oct 2023 18:05:38 GMT",
"version": "v3"
}
] | 2023-10-23 | [
[
"Yoo",
"Jaiyul",
"",
"Zürich"
]
] | The standard model for galaxy bias is built in a Newtonian framework, and several attempts have been made in the past to put it in a relativistic framework. The focus of past works was, however, to use the same Newtonian formulation, but to provide its interpretation in a relativistic framework by either fixing a gauge... |
1503.00354 | Atsushi Nishizawa | Atsushi Nishizawa and Naoki Seto | Search for an emission line of a gravitational wave background | 5 pages, 3 figures | Phys. Rev. D 91, 122001 (2015) | 10.1103/PhysRevD.91.122001 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the light of the history of researches on electromagnetic wave spectrum, a
sharp emission line of gravitational-wave background (GWB) would be an
interesting observational target. Here we study an efficient method to detect a
line GWB by correlating data of multiple ground-based detectors. We find that
the width o... | [
{
"created": "Sun, 1 Mar 2015 21:14:46 GMT",
"version": "v1"
}
] | 2015-06-10 | [
[
"Nishizawa",
"Atsushi",
""
],
[
"Seto",
"Naoki",
""
]
] | In the light of the history of researches on electromagnetic wave spectrum, a sharp emission line of gravitational-wave background (GWB) would be an interesting observational target. Here we study an efficient method to detect a line GWB by correlating data of multiple ground-based detectors. We find that the width of ... |
2307.06778 | Diego Rubiera-Garcia | Lu\'is F. Dias da Silva, Francisco S. N. Lobo, Gonzalo J. Olmo, Diego
Rubiera-Garcia | Photon rings as tests for alternative spherically symmetric geometries
with thin accretion disks | 17 pages, 58 figures/images; v2: many comments and additions, version
accepted for publication in Physical Review D | Phys. Rev. D 108, 084055 (2023) | 10.1103/PhysRevD.108.084055 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | The imaging by the Event Horizon Telescope (EHT) of the supermassive central
objects at the heart of the M87 and Milky Way (Sgr A$^\star$) galaxies, has
marked the first step into peering at the photon rings and central brightness
depression that characterize the optical appearance of black holes surrounded
by an acc... | [
{
"created": "Thu, 13 Jul 2023 14:36:29 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Oct 2023 10:30:23 GMT",
"version": "v2"
}
] | 2023-11-17 | [
[
"da Silva",
"Luís F. Dias",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Rubiera-Garcia",
"Diego",
""
]
] | The imaging by the Event Horizon Telescope (EHT) of the supermassive central objects at the heart of the M87 and Milky Way (Sgr A$^\star$) galaxies, has marked the first step into peering at the photon rings and central brightness depression that characterize the optical appearance of black holes surrounded by an accre... |
gr-qc/9901027 | Dong Hyun Park | Dong Hyun Park and Seung-ho Yang | Geodesic Motions in 2+1 Dimensional Charged Black Holes | 13pages | Gen.Rel.Grav. 31 (1999) 1343-1353 | 10.1023/A:1026733026282 | null | gr-qc | null | We study the geodesic motions of a test particle around 2+1 dimensional
charged black holes. We obtain a class of exact geodesic motions for the
massless test particle when the ratio of its energy and angular momentum is
given by square root of cosmological constant. The other geodesic motions for
both massless and m... | [
{
"created": "Sun, 10 Jan 1999 03:21:04 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Park",
"Dong Hyun",
""
],
[
"Yang",
"Seung-ho",
""
]
] | We study the geodesic motions of a test particle around 2+1 dimensional charged black holes. We obtain a class of exact geodesic motions for the massless test particle when the ratio of its energy and angular momentum is given by square root of cosmological constant. The other geodesic motions for both massless and mas... |
2404.09274 | Morgan Lynch | Morgan H. Lynch | Analysis of the CERN-NA63 radiation reaction data set, assuming the
Rindler bath is composed of microscopic black holes | 8 pages, 9 figures. Accepted for publication at Phys. Rev. D.
Original title changed by editor | null | 10.1103/PhysRevD.109.105009 | null | gr-qc hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | In this manuscript we examine the Unruh-thermalized CERN-NA63 radiation
reaction data set from the point of view of a diphoton Rindler bath. Under the
assumption that these Hawking-Unruh diphoton pairs are microscopic
trans-Planckian black holes, we find the resultant heat capacity describes the
measured energy spect... | [
{
"created": "Sun, 14 Apr 2024 14:32:55 GMT",
"version": "v1"
},
{
"created": "Tue, 7 May 2024 11:13:41 GMT",
"version": "v2"
}
] | 2024-05-08 | [
[
"Lynch",
"Morgan H.",
""
]
] | In this manuscript we examine the Unruh-thermalized CERN-NA63 radiation reaction data set from the point of view of a diphoton Rindler bath. Under the assumption that these Hawking-Unruh diphoton pairs are microscopic trans-Planckian black holes, we find the resultant heat capacity describes the measured energy spectru... |
2012.01840 | Daniil Krichevskiy | S. Alexeyev and D.Krichevskiy | Inflationary solutions in the simplest gravity model with conformal
symmetry | null | Physics of Particles and Nuclei Letters, Vol 18, No 2 (2021) | 10.1134/S1547477121020035 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss a model of gravity with conformal symmetry appearing in the
simplest extension of General Relativity with the Poincar\'e algebra terms. The
nonlinear realization of symmetry causes the existence of five scalar fields.
Therefore it looks desirable to use them for driving the inflation at the
earliest stages... | [
{
"created": "Thu, 3 Dec 2020 11:21:10 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Nov 2021 19:14:23 GMT",
"version": "v2"
}
] | 2021-11-18 | [
[
"Alexeyev",
"S.",
""
],
[
"Krichevskiy",
"D.",
""
]
] | We discuss a model of gravity with conformal symmetry appearing in the simplest extension of General Relativity with the Poincar\'e algebra terms. The nonlinear realization of symmetry causes the existence of five scalar fields. Therefore it looks desirable to use them for driving the inflation at the earliest stages o... |
1007.1517 | Sun ChengYi | Cheng-Yi Sun | Weak Gravity Conjecture and Holographic Dark Energy Model with
Interaction and Spatial Curvature | 14 pages, 7 figures, typographical errors are corrected; conclusin is
unchanged | null | 10.1088/0253-6102/56/1/33 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the paper, we apply the weak gravity conjecture to the holographic
quintessence model of dark energy. Three different holographic dark energy
models are considered: without the interaction in the non-flat universe; with
interaction in the flat universe; with interaction in the non-flat universe. We
find that only ... | [
{
"created": "Fri, 9 Jul 2010 07:24:48 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Sep 2010 13:42:58 GMT",
"version": "v2"
},
{
"created": "Mon, 27 Dec 2010 08:26:54 GMT",
"version": "v3"
}
] | 2015-05-19 | [
[
"Sun",
"Cheng-Yi",
""
]
] | In the paper, we apply the weak gravity conjecture to the holographic quintessence model of dark energy. Three different holographic dark energy models are considered: without the interaction in the non-flat universe; with interaction in the flat universe; with interaction in the non-flat universe. We find that only in... |
2001.10277 | Dennis Hansen | Dennis Hansen, Jelle Hartong and Niels A. Obers | Non-Relativistic Gravity and its Coupling to Matter | 101 pages (78 main text), Nordita preprint number 2020-008 | null | 10.1007/JHEP06(2020)145 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the non-relativistic expansion of general relativity coupled to
matter. This is done by expanding the metric and matter fields analytically in
powers of $1/c^2$ where $c$ is the speed of light. In order to perform this
expansion it is shown to be very convenient to rewrite general relativity in
terms of a ti... | [
{
"created": "Tue, 28 Jan 2020 11:47:30 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Apr 2020 16:10:19 GMT",
"version": "v2"
}
] | 2020-07-15 | [
[
"Hansen",
"Dennis",
""
],
[
"Hartong",
"Jelle",
""
],
[
"Obers",
"Niels A.",
""
]
] | We study the non-relativistic expansion of general relativity coupled to matter. This is done by expanding the metric and matter fields analytically in powers of $1/c^2$ where $c$ is the speed of light. In order to perform this expansion it is shown to be very convenient to rewrite general relativity in terms of a time... |
2007.15119 | Valerio Bozza | Valerio Bozza, Silvia Pietroni and Chiara Melchiorre | Caustics in gravitational lensing by mixed binary systems | 25 pages, 18 figures, in press on Universe, special issue
Gravitational Lensing and Optical Geometry: A Centennial Perspective | null | null | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate binary lenses with $1/r^n$ potentials in the asymmetric case
with two lenses with different indexes $n$ and $m$. These kinds of potentials
have been widely used in several contexts, ranging from galaxies with halos
described by different power laws to lensing by wormholes or exotic matter. In
this pape... | [
{
"created": "Wed, 29 Jul 2020 21:26:47 GMT",
"version": "v1"
}
] | 2020-07-31 | [
[
"Bozza",
"Valerio",
""
],
[
"Pietroni",
"Silvia",
""
],
[
"Melchiorre",
"Chiara",
""
]
] | We investigate binary lenses with $1/r^n$ potentials in the asymmetric case with two lenses with different indexes $n$ and $m$. These kinds of potentials have been widely used in several contexts, ranging from galaxies with halos described by different power laws to lensing by wormholes or exotic matter. In this paper,... |
2306.12201 | Surojit Dalui | Deeshani Mitra, Surojit Dalui, Subir Ghosh and Arpan Krishna Mitra | Acoustic Kerr Metric in Analogue Gravity | 7 pages, no figure | null | null | null | gr-qc hep-th physics.flu-dyn quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The present paper is based on a previous work (involving two of the present
authors) where a generalized fluid dynamical model was proposed. The underlying
symplectic structure of the Lagrangian discrete degrees of freedom obeyed a
Non-Commutative algebra, generated by Berry curvature correction. In an Euler
(or Hami... | [
{
"created": "Wed, 21 Jun 2023 11:51:20 GMT",
"version": "v1"
}
] | 2023-06-23 | [
[
"Mitra",
"Deeshani",
""
],
[
"Dalui",
"Surojit",
""
],
[
"Ghosh",
"Subir",
""
],
[
"Mitra",
"Arpan Krishna",
""
]
] | The present paper is based on a previous work (involving two of the present authors) where a generalized fluid dynamical model was proposed. The underlying symplectic structure of the Lagrangian discrete degrees of freedom obeyed a Non-Commutative algebra, generated by Berry curvature correction. In an Euler (or Hamilt... |
2304.05031 | Ganesh Subramaniam | Ganesh Subramaniam, Avik De, Tee-How Loo, Yong Kheng Goh | Energy condition bounds on $f(Q)$ model parameters in a curved FLRW
universe | Accepted for publication in Physics of the Dark Universe | Physics of the Dark Universe Volume 41, August 2023, 101243 | 10.1016/j.dark.2023.101243 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this exclusive study of the modified $f(Q)$ theory of gravity in the open
and closed type Friedmann-Lema\^itre-Robertson-Walker (FLRW) universe model, we
impose some constraints from the classical energy conditions. The viable range
of parameter $\beta$ for two different $f(Q)$ models, $f(Q)=Q+\beta Q^2$ and
$f(Q)... | [
{
"created": "Tue, 11 Apr 2023 07:39:05 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Apr 2023 13:32:34 GMT",
"version": "v2"
}
] | 2023-06-07 | [
[
"Subramaniam",
"Ganesh",
""
],
[
"De",
"Avik",
""
],
[
"Loo",
"Tee-How",
""
],
[
"Goh",
"Yong Kheng",
""
]
] | In this exclusive study of the modified $f(Q)$ theory of gravity in the open and closed type Friedmann-Lema\^itre-Robertson-Walker (FLRW) universe model, we impose some constraints from the classical energy conditions. The viable range of parameter $\beta$ for two different $f(Q)$ models, $f(Q)=Q+\beta Q^2$ and $f(Q)=Q... |
gr-qc/0404045 | Belinch\'on Jos\'e Antonio | Jos\'e Antonio Belinch\'on and Indrajit Chakrabarty | Full Causal Bulk Viscous Cosmologies with time-varying Constants | 28 pages, RevTeX4 | Int.J.Mod.Phys.D12:861-883,2003 | 10.1142/S0218271803003402 | null | gr-qc | null | We study the evolution of a flat Friedmann-Robertson-Walker Universe, filled
with a bulk viscous cosmological fluid, in the presence of time varying
``constants''. The dimensional analysis of the model suggests a proportionality
between the bulk viscous pressure of the dissipative fluid and the energy
density. On usi... | [
{
"created": "Fri, 9 Apr 2004 16:59:00 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Belinchón",
"José Antonio",
""
],
[
"Chakrabarty",
"Indrajit",
""
]
] | We study the evolution of a flat Friedmann-Robertson-Walker Universe, filled with a bulk viscous cosmological fluid, in the presence of time varying ``constants''. The dimensional analysis of the model suggests a proportionality between the bulk viscous pressure of the dissipative fluid and the energy density. On using... |
1003.1159 | David Kaiser | David I. Kaiser | Conformal Transformations with Multiple Scalar Fields | 17 pages, no figures. References added to match published version. | Phys.Rev.D81:084044,2010 | 10.1103/PhysRevD.81.084044 | MIT-CTP 4125 | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Many interesting models incorporate scalar fields with non-minimal couplings
to the spacetime Ricci curvature scalar. As is well known, if only one scalar
field is non-minimally coupled, then one may perform a conformal transformation
to a new frame in which both the gravitational portion of the Lagrangian and
the ki... | [
{
"created": "Thu, 4 Mar 2010 22:56:05 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Apr 2010 02:26:52 GMT",
"version": "v2"
}
] | 2010-05-12 | [
[
"Kaiser",
"David I.",
""
]
] | Many interesting models incorporate scalar fields with non-minimal couplings to the spacetime Ricci curvature scalar. As is well known, if only one scalar field is non-minimally coupled, then one may perform a conformal transformation to a new frame in which both the gravitational portion of the Lagrangian and the kine... |
2303.14513 | Soumya Jana | Soumya Jana, Sayan Kar | Shadows in dyonic Kerr-Sen black holes | 28 pages, 9 figures, published version | Phys. Rev. D 108, 044008 (2023) | 10.1103/PhysRevD.108.044008 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | Black holes with dyonic charges in Einstein-Maxwell-dilaton-axion
supergravity theory are revisited in the context of black hole shadows. We
consider static as well as rotating (namely the dyonic Kerr-Sen) black holes.
The matter stress-energy tensor components, sourced by the Maxwell, axion and
dilaton fields satisf... | [
{
"created": "Sat, 25 Mar 2023 16:38:08 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Apr 2023 15:49:57 GMT",
"version": "v2"
},
{
"created": "Mon, 7 Aug 2023 16:31:44 GMT",
"version": "v3"
}
] | 2023-08-08 | [
[
"Jana",
"Soumya",
""
],
[
"Kar",
"Sayan",
""
]
] | Black holes with dyonic charges in Einstein-Maxwell-dilaton-axion supergravity theory are revisited in the context of black hole shadows. We consider static as well as rotating (namely the dyonic Kerr-Sen) black holes. The matter stress-energy tensor components, sourced by the Maxwell, axion and dilaton fields satisfy ... |
gr-qc/0505081 | Carlo Rovelli | Alejandro Perez, Carlo Rovelli | Physical effects of the Immirzi parameter | 3 pages. Substantial revision from the first version | Phys.Rev. D73 (2006) 044013 | 10.1103/PhysRevD.73.044013 | null | gr-qc astro-ph hep-ph hep-th | null | The Immirzi parameter is a constant appearing in the general relativity
action used as a starting point for the loop quantization of gravity. The
parameter is commonly believed not to show up in the equations of motion,
because it appears in front of a term in the action that vanishes on shell. We
show that in the pr... | [
{
"created": "Tue, 17 May 2005 18:25:00 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Aug 2005 14:22:23 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Perez",
"Alejandro",
""
],
[
"Rovelli",
"Carlo",
""
]
] | The Immirzi parameter is a constant appearing in the general relativity action used as a starting point for the loop quantization of gravity. The parameter is commonly believed not to show up in the equations of motion, because it appears in front of a term in the action that vanishes on shell. We show that in the pres... |
1901.10959 | Sandeep Aashish | Sandeep Aashish, Abhilash Padhy, Sukanta Panda | Avoiding instabilities in antisymmetric tensor field driven inflation | 14 pages; Sec. III rewritten, with new and improved calculations for
gradient stability analysis; matches published version | Eur. Phys. J. C (2019) 79: 784 | 10.1140/epjc/s10052-019-7308-0 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Models of inflation with antisymmetric tensor studied in the past are plagued
with ghost instability even in an unperturbed FRW background. We show that it
is possible to avoid ghosts in an unperturbed FRW background by considering the
most general kinetic term for antisymmetric tensor field. The kinetic part
acquire... | [
{
"created": "Wed, 30 Jan 2019 17:19:05 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Sep 2019 06:34:54 GMT",
"version": "v2"
},
{
"created": "Tue, 24 Sep 2019 09:12:07 GMT",
"version": "v3"
}
] | 2019-09-25 | [
[
"Aashish",
"Sandeep",
""
],
[
"Padhy",
"Abhilash",
""
],
[
"Panda",
"Sukanta",
""
]
] | Models of inflation with antisymmetric tensor studied in the past are plagued with ghost instability even in an unperturbed FRW background. We show that it is possible to avoid ghosts in an unperturbed FRW background by considering the most general kinetic term for antisymmetric tensor field. The kinetic part acquires ... |
1308.5927 | Yury Eroshenko | V.I. Dokuchaev, Yu.N. Eroshenko | Stationary Solutions of the Dirac Equation in the Gravitational Field of
a Charged Black Hole | 6 pages, 1 figure | Journal of Experimental and Theoretical Physics 117, 72 (2013) | 10.1134/S1063776113080049 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A stationary solution of the Dirac equation in the metric of a
Reissner-Nordstrom black hole has been found. Only one stationary regular state
outside the black hole event horizon and only one stationary regular state
below the Cauchy horizon are shown to exist. The normalization integral of the
wave functions diverg... | [
{
"created": "Tue, 27 Aug 2013 17:01:27 GMT",
"version": "v1"
}
] | 2013-08-28 | [
[
"Dokuchaev",
"V. I.",
""
],
[
"Eroshenko",
"Yu. N.",
""
]
] | A stationary solution of the Dirac equation in the metric of a Reissner-Nordstrom black hole has been found. Only one stationary regular state outside the black hole event horizon and only one stationary regular state below the Cauchy horizon are shown to exist. The normalization integral of the wave functions diverges... |
1810.09034 | Luis L\'opez | L. A. Lopez and Valeria Hinojosa | Quasinormal modes of Charged Regular Black Hole | arXiv admin note: text overlap with arXiv:1607.02476 | Canadian Journal of Physics 2020 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The quasinormal modes (QNMs) of a regular black hole with charge are
calculated in the eikonal approximation. In the eikonal limit the QNMs of black
hole are determined by the parameters of the unstable circular null geodesics.
The behaviors of QNMs are compared with QNMs of Reisner-Nordstr\"{o}m black
hole, it is do... | [
{
"created": "Sun, 21 Oct 2018 22:22:07 GMT",
"version": "v1"
},
{
"created": "Wed, 31 Jul 2019 17:56:59 GMT",
"version": "v2"
},
{
"created": "Wed, 19 Aug 2020 16:03:47 GMT",
"version": "v3"
}
] | 2020-08-20 | [
[
"Lopez",
"L. A.",
""
],
[
"Hinojosa",
"Valeria",
""
]
] | The quasinormal modes (QNMs) of a regular black hole with charge are calculated in the eikonal approximation. In the eikonal limit the QNMs of black hole are determined by the parameters of the unstable circular null geodesics. The behaviors of QNMs are compared with QNMs of Reisner-Nordstr\"{o}m black hole, it is done... |
2108.13379 | Sung-Jin Oh | Jonathan Luk and Sung-Jin Oh | Global nonlinear stability of large dispersive solutions to the Einstein
equations | 94 pages, 1 figure; v2: minor typos fixed | null | 10.1007/s00023-021-01148-8 | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We extend the monumental result of Christodoulou-Klainerman on the global
nonlinear stability of the Minkowski spacetime to the global nonlinear
stability of a class of large dispersive spacetimes. More precisely, we show
that any regular future causally geodesically complete, asymptotically flat
solution to the Eins... | [
{
"created": "Mon, 30 Aug 2021 17:01:38 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Dec 2021 00:17:45 GMT",
"version": "v2"
}
] | 2022-06-29 | [
[
"Luk",
"Jonathan",
""
],
[
"Oh",
"Sung-Jin",
""
]
] | We extend the monumental result of Christodoulou-Klainerman on the global nonlinear stability of the Minkowski spacetime to the global nonlinear stability of a class of large dispersive spacetimes. More precisely, we show that any regular future causally geodesically complete, asymptotically flat solution to the Einste... |
1210.4719 | Yoshiaki Ohkuwa | Yoshiaki Ohkuwa, Yasuo Ezawa | Third quantization of $f(R)$-type gravity II - General $f(R)$ case - | 9 pages. Subtitle and a reference are added with some minor changes.
arXiv admin note: text overlap with arXiv:1203.1361 | Class. Quantum Grav. 30 (2013) 235015 | 10.1088/0264-9381/30/23/235015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the previous paper we examined the third quantization of the $f(R)$-type
gravity and studied the Heisenberg uncertainty relation of the universe in the
example of $f(R)=R^2$. In this work the Heisenberg uncertainty relation of the
universe is investigated in the general $f(R)$-type gravity where tachyonic
states a... | [
{
"created": "Wed, 10 Oct 2012 01:54:21 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Oct 2012 08:27:57 GMT",
"version": "v2"
}
] | 2019-04-30 | [
[
"Ohkuwa",
"Yoshiaki",
""
],
[
"Ezawa",
"Yasuo",
""
]
] | In the previous paper we examined the third quantization of the $f(R)$-type gravity and studied the Heisenberg uncertainty relation of the universe in the example of $f(R)=R^2$. In this work the Heisenberg uncertainty relation of the universe is investigated in the general $f(R)$-type gravity where tachyonic states are... |
2209.13471 | Shokoufe Faraji | Shokoufe Faraji, Audrey Trova | Oscillation properties of relativistic tori in the vicinity of a
distorted deformed compact object | null | null | 10.1093/mnras/stad2209 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper studies the oscillation properties of relativistic,
non-self-gravitating tori in the background of a distorted deformed compact
object. This work concentrates on the static and axially symmetric metric
containing two quadrupole parameters; relating to the central object and the
external fields. This metric... | [
{
"created": "Tue, 6 Sep 2022 17:45:41 GMT",
"version": "v1"
}
] | 2023-08-02 | [
[
"Faraji",
"Shokoufe",
""
],
[
"Trova",
"Audrey",
""
]
] | This paper studies the oscillation properties of relativistic, non-self-gravitating tori in the background of a distorted deformed compact object. This work concentrates on the static and axially symmetric metric containing two quadrupole parameters; relating to the central object and the external fields. This metric m... |
0904.0469 | Fred Cooperstock I | F.I. Cooperstock and M.J. Dupre | Covariant energy-momentum and an uncertainty principle for general
relativity | 11 pages, new material added | Annals of Physics 339, 531-541, 2013 | 10.1016/j.aop.2013.08.009 | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-sa/3.0/ | We introduce a naturally-defined totally invariant spacetime energy
expression for general relativity incorporating the contribution from gravity.
The extension links seamlessly to the action integral for the gravitational
field. The demand that the general expression for arbitrary systems reduces to
the Tolman integ... | [
{
"created": "Thu, 2 Apr 2009 21:00:27 GMT",
"version": "v1"
},
{
"created": "Wed, 19 May 2010 18:43:52 GMT",
"version": "v2"
},
{
"created": "Tue, 7 Oct 2014 16:30:30 GMT",
"version": "v3"
}
] | 2015-05-13 | [
[
"Cooperstock",
"F. I.",
""
],
[
"Dupre",
"M. J.",
""
]
] | We introduce a naturally-defined totally invariant spacetime energy expression for general relativity incorporating the contribution from gravity. The extension links seamlessly to the action integral for the gravitational field. The demand that the general expression for arbitrary systems reduces to the Tolman integra... |
2303.16664 | Hamza Boumaza | Hamza Boumaza | Axial and polar stability of neutron stars in scalar-tensor theories
with disformal coupling | Added references and appendix, corrected typos, Revised section 2 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work, we study the radial and non-radial perturbative
stability of neutron stars in which the matter is disformally coupled to the
metric. First, we derive the gravitational and the fluid equations of the
neutron star in a static and spherically symmetric background. Then, we
calculate the second-order... | [
{
"created": "Wed, 29 Mar 2023 13:14:50 GMT",
"version": "v1"
},
{
"created": "Sat, 5 Aug 2023 19:32:00 GMT",
"version": "v2"
}
] | 2023-08-08 | [
[
"Boumaza",
"Hamza",
""
]
] | In the present work, we study the radial and non-radial perturbative stability of neutron stars in which the matter is disformally coupled to the metric. First, we derive the gravitational and the fluid equations of the neutron star in a static and spherically symmetric background. Then, we calculate the second-order e... |
2210.17135 | PanPan Wang | Pan-Pan Wang, Wei-Liang Qian, Han-Zhong Wu, Yu-Jie Tan, and Cheng-Gang
Shao | Arm locking in conjunction with time-delay interferometry | null | null | 10.1103/PhysRevD.106.104042 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | A crucial challenge to the ongoing endeavor of spaceborne gravitational wave
(GW) detection resides in the laser phase noise, typically 7 to 8 orders of
magnitude above the inevitable noise. The arm locking technique was proposed to
suppress the noise in pre-stabilized laser beams. Based on the feedback control
theor... | [
{
"created": "Mon, 31 Oct 2022 08:35:20 GMT",
"version": "v1"
}
] | 2022-12-07 | [
[
"Wang",
"Pan-Pan",
""
],
[
"Qian",
"Wei-Liang",
""
],
[
"Wu",
"Han-Zhong",
""
],
[
"Tan",
"Yu-Jie",
""
],
[
"Shao",
"Cheng-Gang",
""
]
] | A crucial challenge to the ongoing endeavor of spaceborne gravitational wave (GW) detection resides in the laser phase noise, typically 7 to 8 orders of magnitude above the inevitable noise. The arm locking technique was proposed to suppress the noise in pre-stabilized laser beams. Based on the feedback control theory,... |
2310.04883 | Celso de Camargo Barros Jr. | L. G. Barbosa and C. C. Barros Jr | Scalar bosons in Bonnor-Melvin-$\Lambda$ universe: Exact solution,
Landau levels and Coulomb-like potential | 16 pages, 10 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this work we study spin-0 particles in a spacetime which structure is
determined by a homogeneous magnetic field and a cosmological constant. For
this purpose we take into account a framework based on the Bonnor-Melvin
solution with the inclusion of the cosmological constant. We write the
Klein-Gordon equation, so... | [
{
"created": "Sat, 7 Oct 2023 17:46:55 GMT",
"version": "v1"
}
] | 2023-10-10 | [
[
"Barbosa",
"L. G.",
""
],
[
"Barros",
"C. C.",
"Jr"
]
] | In this work we study spin-0 particles in a spacetime which structure is determined by a homogeneous magnetic field and a cosmological constant. For this purpose we take into account a framework based on the Bonnor-Melvin solution with the inclusion of the cosmological constant. We write the Klein-Gordon equation, solv... |
1705.01277 | Hernando Quevedo | Hernando Quevedo | Can spacetime curvature be used in future navigation systems? | Prepared for the Proceedings of the Conference "Relativistic Geodesy:
Foundations and Applications", March 2016, Bad Honnef (Germany) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We argue that the curvature generated by a gravitational field can be used to
calculate the corresponding metric which determines the trajectories of freely
falling test particles. To this end, we present a method to compute the metric
from a given curvature tensor. We use Petrov's classification to handle the
struct... | [
{
"created": "Wed, 3 May 2017 07:17:23 GMT",
"version": "v1"
}
] | 2017-05-04 | [
[
"Quevedo",
"Hernando",
""
]
] | We argue that the curvature generated by a gravitational field can be used to calculate the corresponding metric which determines the trajectories of freely falling test particles. To this end, we present a method to compute the metric from a given curvature tensor. We use Petrov's classification to handle the structur... |
0709.2628 | Muhammad Sharif | M. Sharif and Umber Sheikh | Isothermal Plasma Waves in Gravitomagnetic Planar Analogue | 28 pages, 6 figures, accepted for publication Class. Quantum Grav | Class.Quant.Grav.24:5495-5514,2007 | 10.1088/0264-9381/24/22/013 | null | gr-qc astro-ph | null | We investigate the wave properties of the Kerr black hole with isothermal
plasma using 3+1 ADM formalism. The corresponding Fourier analyzed perturbed
GRMHD equations are used to obtain the dispersion relations. These relations
lead to the real values of the components of wave vector $\textbf{k}$ which are
used to ev... | [
{
"created": "Sat, 15 Sep 2007 06:11:39 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Sharif",
"M.",
""
],
[
"Sheikh",
"Umber",
""
]
] | We investigate the wave properties of the Kerr black hole with isothermal plasma using 3+1 ADM formalism. The corresponding Fourier analyzed perturbed GRMHD equations are used to obtain the dispersion relations. These relations lead to the real values of the components of wave vector $\textbf{k}$ which are used to eval... |
1901.04640 | Gil de Oliveira-Neto | G. Oliveira-Neto, L. G. Martins, G. A. Monerat and E. V. Corr\^ea
Silva | Quantum cosmology of a Ho\v{r}ava-Lifshitz model coupled to radiation | 33 pages and 15 figures. Few modifications in the text and new
references added. Submitted to IJMPD | null | 10.1142/S021827181950130X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present paper, we canonically quantize an homogeneous and isotropic
Ho\v{r}ava-Lifshitz cosmological model, with constant positive spatial sections
and coupled to radiation. We consider the projectable version of that
gravitational theory without the detailed balance condition. We use the ADM
formalism to writ... | [
{
"created": "Tue, 15 Jan 2019 02:49:38 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Jan 2019 13:26:01 GMT",
"version": "v2"
},
{
"created": "Mon, 1 Apr 2019 21:48:21 GMT",
"version": "v3"
}
] | 2019-08-07 | [
[
"Oliveira-Neto",
"G.",
""
],
[
"Martins",
"L. G.",
""
],
[
"Monerat",
"G. A.",
""
],
[
"Silva",
"E. V. Corrêa",
""
]
] | In the present paper, we canonically quantize an homogeneous and isotropic Ho\v{r}ava-Lifshitz cosmological model, with constant positive spatial sections and coupled to radiation. We consider the projectable version of that gravitational theory without the detailed balance condition. We use the ADM formalism to write ... |
1801.08872 | Juliano Neves | R. V. Maluf, Juliano C. S. Neves | Bardeen regular black hole as a quantum-corrected Schwarzschild black
hole | 5 pages. V2 with minor changes. This article is a consequence of
arXiv:1801.02661. Published in International Journal of Modern Physics D | Int. J. Mod. Phys. D 28, 1950048 (2019) | 10.1142/S0218271819500482 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bardeen regular black hole is commonly considered as a solution of general
relativity coupled to a nonlinear electrodynamics. In this paper, it is shown
that the Bardeen solution may be interpreted as a quantum-corrected
Schwarzschild black hole. This new interpretation is obtained by means of a
generalized uncertain... | [
{
"created": "Fri, 26 Jan 2018 18:53:58 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Dec 2018 13:42:59 GMT",
"version": "v2"
}
] | 2018-12-06 | [
[
"Maluf",
"R. V.",
""
],
[
"Neves",
"Juliano C. S.",
""
]
] | Bardeen regular black hole is commonly considered as a solution of general relativity coupled to a nonlinear electrodynamics. In this paper, it is shown that the Bardeen solution may be interpreted as a quantum-corrected Schwarzschild black hole. This new interpretation is obtained by means of a generalized uncertainty... |
2311.18640 | Qianyun Yun | Qianyun Yun, Wen-Biao Han, Yi-Yang Guo, He Wang, and Minghui Du | The detection, extraction and parameter estimation of extreme-mass-ratio
inspirals with deep learning | 6 pages, 5 figures | null | null | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by/4.0/ | One of the primary goals of space-borne gravitational wave detectors is to
detect and analyze extreme-mass-ratio inspirals (EMRIs). This endeavor presents
a significant challenge due to the complex and lengthy EMRI signals, further
compounded by their inherently faint nature. In this letter, we introduce a
2-layer Co... | [
{
"created": "Thu, 30 Nov 2023 15:46:44 GMT",
"version": "v1"
}
] | 2023-12-01 | [
[
"Yun",
"Qianyun",
""
],
[
"Han",
"Wen-Biao",
""
],
[
"Guo",
"Yi-Yang",
""
],
[
"Wang",
"He",
""
],
[
"Du",
"Minghui",
""
]
] | One of the primary goals of space-borne gravitational wave detectors is to detect and analyze extreme-mass-ratio inspirals (EMRIs). This endeavor presents a significant challenge due to the complex and lengthy EMRI signals, further compounded by their inherently faint nature. In this letter, we introduce a 2-layer Conv... |
1103.1127 | Mike Stannett | Mike Stannett | Computation and Spacetime Structure | 10 pages, 2 figures. Submitted to Physics & Computation 2011, Turku,
Finland | null | null | null | gr-qc cs.CC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the relationship between computation and spacetime structure,
focussing on the role of closed timelike curves (CTCs) in promoting
computational speedup. We note first that CTC traversal can be interpreted in
two distinct ways, depending on ones understanding of spacetime. Focussing on
one interpretatio... | [
{
"created": "Sun, 6 Mar 2011 14:34:28 GMT",
"version": "v1"
}
] | 2011-03-08 | [
[
"Stannett",
"Mike",
""
]
] | We investigate the relationship between computation and spacetime structure, focussing on the role of closed timelike curves (CTCs) in promoting computational speedup. We note first that CTC traversal can be interpreted in two distinct ways, depending on ones understanding of spacetime. Focussing on one interpretation ... |
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