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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1602.02568 | Katy Clough Ms | Katy Clough, Eugene A. Lim | Critical Phenomena in Non-spherically Symmetric Scalar Bubble Collapse | 22 pages, 12 Figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate numerically the critical behaviour which occurs in the
collapse of both spherically symmetric and asymmetric scalar field bubbles with
full general relativity. We use a minimally coupled scalar field subject to a
"double well" interaction potential, with the bubble wall spanning the barrier
between two... | [
{
"created": "Mon, 8 Feb 2016 13:57:34 GMT",
"version": "v1"
}
] | 2016-02-09 | [
[
"Clough",
"Katy",
""
],
[
"Lim",
"Eugene A.",
""
]
] | We investigate numerically the critical behaviour which occurs in the collapse of both spherically symmetric and asymmetric scalar field bubbles with full general relativity. We use a minimally coupled scalar field subject to a "double well" interaction potential, with the bubble wall spanning the barrier between two d... |
2109.13031 | Rahul Kumar | Sushant G. Ghosh and Rahul Kumar walia | Rotating black holes in general relativity coupled to nonlinear
electrodynamics | 10 pages and 7 figures. Accepted for publication in Annals of
Physics. arXiv admin note: substantial text overlap with arXiv:2109.08055 | null | 10.1016/j.aop.2021.168619 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find an exact spherically symmetric magnetically charged black hole
solution to general relativity (GR) coupled to nonlinear electrodynamics (NED)
with an appropriate Lagrangian density. In turn, starting with this spherical
black hole as a seed metric, we construct a rotating spacetime, a modification
of Kerr bla... | [
{
"created": "Mon, 27 Sep 2021 13:11:08 GMT",
"version": "v1"
}
] | 2022-01-05 | [
[
"Ghosh",
"Sushant G.",
""
],
[
"walia",
"Rahul Kumar",
""
]
] | We find an exact spherically symmetric magnetically charged black hole solution to general relativity (GR) coupled to nonlinear electrodynamics (NED) with an appropriate Lagrangian density. In turn, starting with this spherical black hole as a seed metric, we construct a rotating spacetime, a modification of Kerr black... |
1108.3346 | Saulo Pereira H | S. H. Pereira, J. C. Z. Aguilar and E. C. Rom\~ao | Massless particle creation in a f(R) expanding universe | 14 pages, 2 figures. Expanded and revised version | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we present an exact solution to the spectrum of massless
particle creation for a power law expansion of the scale factor of the form
$t^{2n/3}$ for real scalar particles in a flat and matter dominated universe.
Such an evolution follows from a modified theory of gravity of the type
$f(R)=\beta R^n$, and... | [
{
"created": "Tue, 16 Aug 2011 20:17:27 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Mar 2012 16:05:29 GMT",
"version": "v2"
},
{
"created": "Sat, 15 Jun 2013 18:15:30 GMT",
"version": "v3"
}
] | 2013-06-18 | [
[
"Pereira",
"S. H.",
""
],
[
"Aguilar",
"J. C. Z.",
""
],
[
"Romão",
"E. C.",
""
]
] | In this paper we present an exact solution to the spectrum of massless particle creation for a power law expansion of the scale factor of the form $t^{2n/3}$ for real scalar particles in a flat and matter dominated universe. Such an evolution follows from a modified theory of gravity of the type $f(R)=\beta R^n$, and i... |
2310.07540 | Mariia Churilova | Mariia Churilova, Martin Kolo\v{s}, Zden\v{e}k Stuchl\'ik | String loop vibration around Schwarzschild black hole | 13 pages, 9 figures | Eur. Phys. J. C 84, 25 (2024) | 10.1140/epjc/s10052-023-12367-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | String loop vibrations in a central plane of a Schwarzschild black hole are
investigated for various string equations of state. We discuss string loop
stability and derive frequencies of vibrational modes. Using the vibrating
string loop model we fit the quasi-periodic oscillation (QPO) observed in X-ray
signal comin... | [
{
"created": "Wed, 11 Oct 2023 14:42:57 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Jan 2024 16:34:22 GMT",
"version": "v2"
}
] | 2024-01-17 | [
[
"Churilova",
"Mariia",
""
],
[
"Kološ",
"Martin",
""
],
[
"Stuchlík",
"Zdeněk",
""
]
] | String loop vibrations in a central plane of a Schwarzschild black hole are investigated for various string equations of state. We discuss string loop stability and derive frequencies of vibrational modes. Using the vibrating string loop model we fit the quasi-periodic oscillation (QPO) observed in X-ray signal coming ... |
gr-qc/0601085 | Martin Bojowald | Martin Bojowald | Loop Quantum Cosmology | 104 pages, 10 figures; online version, containing 6 movies, available
at http://relativity.livingreviews.org/Articles/lrr-2005-11/ | Living Rev.Rel.8:11,2005 | 10.12942/lrr-2005-11 | AEI-2005-185, IGPG-06/1-6 | gr-qc astro-ph hep-th | null | Quantum gravity is expected to be necessary in order to understand situations
where classical general relativity breaks down. In particular in cosmology one
has to deal with initial singularities, i.e. the fact that the backward
evolution of a classical space-time inevitably comes to an end after a finite
amount of p... | [
{
"created": "Fri, 20 Jan 2006 15:54:24 GMT",
"version": "v1"
}
] | 2016-10-19 | [
[
"Bojowald",
"Martin",
""
]
] | Quantum gravity is expected to be necessary in order to understand situations where classical general relativity breaks down. In particular in cosmology one has to deal with initial singularities, i.e. the fact that the backward evolution of a classical space-time inevitably comes to an end after a finite amount of pro... |
1303.4832 | Abhishek Majhi | Abhishek Majhi | Energy spectrum of black holes : a new view | version accepted for publication in MPLA | Mod. Phys. Lett. A, 32, 1750002 (2017) | 10.1142/S021773231750002X | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Energy of a black hole is usually quantized by invoking some area
quantization scheme after expressing the energy in terms of the horizon area.
However, in this approach one has to quantize the local and asymptotic energy
of the black hole separately and the two results do not manifest any physical
correspondence wit... | [
{
"created": "Wed, 20 Mar 2013 03:52:55 GMT",
"version": "v1"
},
{
"created": "Sat, 30 Nov 2013 04:30:27 GMT",
"version": "v2"
},
{
"created": "Sat, 20 Sep 2014 08:51:09 GMT",
"version": "v3"
},
{
"created": "Tue, 22 Dec 2015 08:03:10 GMT",
"version": "v4"
},
{
"c... | 2017-01-04 | [
[
"Majhi",
"Abhishek",
""
]
] | Energy of a black hole is usually quantized by invoking some area quantization scheme after expressing the energy in terms of the horizon area. However, in this approach one has to quantize the local and asymptotic energy of the black hole separately and the two results do not manifest any physical correspondence with ... |
2405.17161 | Gregoire Pierra | Gr\'egoire Pierra | Gravitational Wave Cosmology: Be Careful of the Black Hole Mass Spectrum | 6 pages, 3 figures, contribution to the 2024 Very High Energy
Phenomena in the Universe session of the 58th Rencontres de Moriond | null | null | null | gr-qc astro-ph.CO | http://creativecommons.org/licenses/by/4.0/ | Gravitational waves (GWs) from compact binary coalescences (CBCs) offer
insights into the universe expansion. The spectral siren method, used without
electromagnetic counterparts (EMC), infers cosmic expansion (Hubble constant)
by relating detector and source frame masses of black hole (BH) mergers.
However, heuristi... | [
{
"created": "Mon, 27 May 2024 13:34:35 GMT",
"version": "v1"
}
] | 2024-05-28 | [
[
"Pierra",
"Grégoire",
""
]
] | Gravitational waves (GWs) from compact binary coalescences (CBCs) offer insights into the universe expansion. The spectral siren method, used without electromagnetic counterparts (EMC), infers cosmic expansion (Hubble constant) by relating detector and source frame masses of black hole (BH) mergers. However, heuristic ... |
0710.1682 | Edmund Schluessel | Edmund Schluessel | Constraining the parameters of binary systems through time-dependent
light deflection | 15 pages, 2 figures, accepted in General Relativity & Gravitation | Gen.Rel.Grav.40:1013-1027,2008 | 10.1007/s10714-007-0588-y | null | gr-qc | null | A theory is derived relating the configuration of the cores of active
galaxies, specifically candidates for presumed super-massive black hole
binaries (SMBHBs), to time-dependent changes in images of those galaxies. Three
deflection quantities, resulting from the monopole term, mass quadrupole term,
and spin dipole t... | [
{
"created": "Tue, 9 Oct 2007 08:35:35 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Schluessel",
"Edmund",
""
]
] | A theory is derived relating the configuration of the cores of active galaxies, specifically candidates for presumed super-massive black hole binaries (SMBHBs), to time-dependent changes in images of those galaxies. Three deflection quantities, resulting from the monopole term, mass quadrupole term, and spin dipole ter... |
1001.3922 | Naresh Dadhich | N. Dadhich, A. Molina and A. Khugaev | Uniform density static fluid sphere in Einstein-Gauss-Bonnet gravity and
its universality | 5 pages, title and abstract modified, one author added, considerable
improvement in clarity and precision, one reference added, result unchanged.
version to agree with the published paper in Phys. Rev. D | Phys.Rev.D81:104026,2010 | 10.1103/PhysRevD.81.104026 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Newtonian theory, gravity inside a constant density static sphere is
independent of spacetime dimension. Interestingly this general result is also
carried over to Einsteinian as well as higher order Einstein-Gauss-Bonnet
(Lovelock) gravity notwithstanding their nonlinearity. We prove that the
necessary and suffici... | [
{
"created": "Fri, 22 Jan 2010 06:48:33 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jan 2010 11:24:45 GMT",
"version": "v2"
},
{
"created": "Mon, 5 Apr 2010 12:06:34 GMT",
"version": "v3"
},
{
"created": "Thu, 8 Apr 2010 06:11:08 GMT",
"version": "v4"
},
{
"cre... | 2010-05-27 | [
[
"Dadhich",
"N.",
""
],
[
"Molina",
"A.",
""
],
[
"Khugaev",
"A.",
""
]
] | In Newtonian theory, gravity inside a constant density static sphere is independent of spacetime dimension. Interestingly this general result is also carried over to Einsteinian as well as higher order Einstein-Gauss-Bonnet (Lovelock) gravity notwithstanding their nonlinearity. We prove that the necessary and sufficien... |
1004.1353 | Pablo Galaviz | Pablo Galaviz, Bernd Bruegmann, Zhoujian Cao | Numerical evolution of multiple black holes with accurate initial data | Published in PRD | Phys.Rev.D82:024005,2010 | 10.1103/PhysRevD.82.024005 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present numerical evolutions of three equal-mass black holes using the
moving puncture approach. We calculate puncture initial data for three black
holes solving the constraint equations by means of a high-order multigrid
elliptic solver. Using these initial data, we show the results for three black
hole evolution... | [
{
"created": "Thu, 8 Apr 2010 14:47:29 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Dec 2010 18:23:43 GMT",
"version": "v2"
}
] | 2010-12-21 | [
[
"Galaviz",
"Pablo",
""
],
[
"Bruegmann",
"Bernd",
""
],
[
"Cao",
"Zhoujian",
""
]
] | We present numerical evolutions of three equal-mass black holes using the moving puncture approach. We calculate puncture initial data for three black holes solving the constraint equations by means of a high-order multigrid elliptic solver. Using these initial data, we show the results for three black hole evolutions ... |
gr-qc/9812017 | W. G. Unruh | W. G. Unruh, Moninder Jheeta | Complex Paths and the Hartle Hawking Wave-function for Slow Roll
Cosmologies | 17pp., 2 figures | null | null | null | gr-qc | null | A large set of complex path solutions for the Hartle Hawking semi-classical
wave function are found for an inflationary universe in the "slow roll" regime.
The implication of these for the semi-classical evolution of the universe is
also studied.
| [
{
"created": "Fri, 4 Dec 1998 19:07:21 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Unruh",
"W. G.",
""
],
[
"Jheeta",
"Moninder",
""
]
] | A large set of complex path solutions for the Hartle Hawking semi-classical wave function are found for an inflationary universe in the "slow roll" regime. The implication of these for the semi-classical evolution of the universe is also studied. |
0810.2602 | Valerio Faraoni | Valerio Faraoni (Bishop's University) | f(R) gravity: successes and challenges | 18 pages, latex. Presented at SIGRAV2008, 18th Congress of the
Italian Society of General Relativity and Gravitation, Cosenza, Italy
September 22-25, 2008 | null | null | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the state of the art of f(R) theories of gravity (in their various
formulations), which have been proposed as an explanation of the cosmic
acceleration alternative to dark energy. The successes of f(R) gravity are
discussed, together with the challenges imposed by minimal criteria for their
viability.
| [
{
"created": "Wed, 15 Oct 2008 05:27:27 GMT",
"version": "v1"
}
] | 2008-10-16 | [
[
"Faraoni",
"Valerio",
"",
"Bishop's University"
]
] | We review the state of the art of f(R) theories of gravity (in their various formulations), which have been proposed as an explanation of the cosmic acceleration alternative to dark energy. The successes of f(R) gravity are discussed, together with the challenges imposed by minimal criteria for their viability. |
0708.3768 | Saibal Ray | Saibal Ray, P. C. Ray, Partha Pratim Ghosh, Utpal Mukhopadhyay and
Partha Chowdhury | Scenario of inflationary cosmology from the phenomenological $\Lambda$
models | 12 latex pages with 12 figures; Replaced with the revised version;
Accepeted for `J. Non-lin. Frac. Phen. Sci. Engg.' | Int.J.Theor.Phys.48:2499-2510,2009 | 10.1007/s10773-009-0036-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Choosing the three phenomenological models of the dynamical cosmological term
$\Lambda$, viz., $\Lambda \sim (\dot a/a)^2$, $\Lambda \sim {\ddot a/a}$ and
$\Lambda \sim \rho$ where $a$ is the cosmic scale factor, it has been shown by
the method of numerical analysis that the three models are equivalent for the
flat U... | [
{
"created": "Tue, 28 Aug 2007 12:27:51 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Jun 2008 15:02:33 GMT",
"version": "v2"
}
] | 2009-09-28 | [
[
"Ray",
"Saibal",
""
],
[
"Ray",
"P. C.",
""
],
[
"Ghosh",
"Partha Pratim",
""
],
[
"Mukhopadhyay",
"Utpal",
""
],
[
"Chowdhury",
"Partha",
""
]
] | Choosing the three phenomenological models of the dynamical cosmological term $\Lambda$, viz., $\Lambda \sim (\dot a/a)^2$, $\Lambda \sim {\ddot a/a}$ and $\Lambda \sim \rho$ where $a$ is the cosmic scale factor, it has been shown by the method of numerical analysis that the three models are equivalent for the flat Uni... |
gr-qc/0108043 | Janna Levin | Janna Levin | Topology and the Cosmic Microwave Background | Hilarioulsy forgot to remove comments to myself in previous version.
Reference added. Submitted to Physics Reports | Phys.Rept.365:251-333,2002 | 10.1016/S0370-1573(02)00018-2 | null | gr-qc astro-ph | null | Nature abhors an infinity. The limits of general relativity are often
signaled by infinities: infinite curvature as in the center of a black hole,
the infinite energy of the singular big bang. We might be inclined to add an
infinite universe to the list of intolerable infinities. Theories that move
beyond general rel... | [
{
"created": "Thu, 16 Aug 2001 20:48:09 GMT",
"version": "v1"
},
{
"created": "Mon, 20 Aug 2001 13:01:54 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Levin",
"Janna",
""
]
] | Nature abhors an infinity. The limits of general relativity are often signaled by infinities: infinite curvature as in the center of a black hole, the infinite energy of the singular big bang. We might be inclined to add an infinite universe to the list of intolerable infinities. Theories that move beyond general relat... |
1905.00826 | Vasilis Oikonomou | V.K. Oikonomou | The Classical and Loop Quantum Cosmology Phase Space of Interacting Dark
Energy and Superfluid Dark Matter | PRD Accepted | null | 10.1103/PhysRevD.99.104042 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study in detail the phase space of a cosmological system
consisting of two coupled fluids, namely a dark energy fluid coupled with a
superfluid dark matter fluid. The dark matter fluid is assumed to have a
superfluid equation of state, hence it is not pressureless and our aim is to
find the impact of... | [
{
"created": "Thu, 2 May 2019 16:01:10 GMT",
"version": "v1"
}
] | 2019-05-29 | [
[
"Oikonomou",
"V. K.",
""
]
] | In this paper we study in detail the phase space of a cosmological system consisting of two coupled fluids, namely a dark energy fluid coupled with a superfluid dark matter fluid. The dark matter fluid is assumed to have a superfluid equation of state, hence it is not pressureless and our aim is to find the impact of t... |
gr-qc/9906075 | David Polarski | D. Polarski | Direct Detection of Primordial Gravitational Waves in a BSI Inflationary
Model | to appear in Phys. Lett. B, (uses LaTeX, 10 pages) | Phys.Lett. B458 (1999) 13-18 | 10.1016/S0370-2693(99)00570-5 | null | gr-qc astro-ph hep-ph | null | We investigate the possibility for a direct detection by future space
interferometers of the stochastic gravitational wave (GW) background generated
during the inflationary stage in a class of viable $\Lambda$CDM BSI models. At
frequencies around $10^{-3}$Hz, maximal values $\Omega_{gw}(\nu)\sim 3\times
10^{-15}$ are... | [
{
"created": "Thu, 17 Jun 1999 14:38:35 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Polarski",
"D.",
""
]
] | We investigate the possibility for a direct detection by future space interferometers of the stochastic gravitational wave (GW) background generated during the inflationary stage in a class of viable $\Lambda$CDM BSI models. At frequencies around $10^{-3}$Hz, maximal values $\Omega_{gw}(\nu)\sim 3\times 10^{-15}$ are f... |
0905.2984 | Riccardo Sturani | R. Terenzi, R. Sturani | Wavelet entropy filter and cross-correlation of gravitational wave data | 10 pages, 6 figures. Proceeding of the GWDAW-13 conference | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a method for enhancing the cross-correlation of gravitational wave
signals eventually present in data streams containing otherwise uncorrelated
noise. Such method makes use of the wavelet decomposition to cast the
cross-correlation time series in time-frequency space. Then an entropy
criterion is applied t... | [
{
"created": "Mon, 18 May 2009 21:23:55 GMT",
"version": "v1"
},
{
"created": "Thu, 28 May 2009 17:54:52 GMT",
"version": "v2"
}
] | 2009-05-28 | [
[
"Terenzi",
"R.",
""
],
[
"Sturani",
"R.",
""
]
] | We present a method for enhancing the cross-correlation of gravitational wave signals eventually present in data streams containing otherwise uncorrelated noise. Such method makes use of the wavelet decomposition to cast the cross-correlation time series in time-frequency space. Then an entropy criterion is applied to ... |
1603.06504 | Christof Wetterich | C. Wetterich | Quantum correlations for the metric | extended discussion of off-shell propagator and mode functions, new
references, 38 pages | Phys. Rev. D 95, 123525 (2017) | 10.1103/PhysRevD.95.123525 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the correlation function for the metric for homogeneous and
isotropic cosmologies. The exact propagator equation determines the correlation
function as the inverse of the second functional derivative of the quantum
effective action. This formulation relates the metric correlation function
employed in quant... | [
{
"created": "Mon, 21 Mar 2016 17:22:52 GMT",
"version": "v1"
},
{
"created": "Mon, 29 May 2017 12:20:50 GMT",
"version": "v2"
}
] | 2017-06-28 | [
[
"Wetterich",
"C.",
""
]
] | We discuss the correlation function for the metric for homogeneous and isotropic cosmologies. The exact propagator equation determines the correlation function as the inverse of the second functional derivative of the quantum effective action. This formulation relates the metric correlation function employed in quantum... |
2208.04949 | Rituparna Mandal | Sunandan Gangopadhyay, Rituparna Mandal, Amitabha Lahiri | Bianchi-I cosmology in quantum gravity | 4 pages, Contribution to the proceedings of XXIV DAE-BRNS High Energy
Physics Symposium 2020 | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The exact renormalization group flow equations for gravity lead to quantum
corrections of Newton's constant and cosmological constant. Using this we
investigate the Bianchi-I cosmological model at late times. In particular, we
obtain the scale factors in different directions, and observe that they
eventually evolve i... | [
{
"created": "Tue, 9 Aug 2022 05:46:08 GMT",
"version": "v1"
}
] | 2022-08-11 | [
[
"Gangopadhyay",
"Sunandan",
""
],
[
"Mandal",
"Rituparna",
""
],
[
"Lahiri",
"Amitabha",
""
]
] | The exact renormalization group flow equations for gravity lead to quantum corrections of Newton's constant and cosmological constant. Using this we investigate the Bianchi-I cosmological model at late times. In particular, we obtain the scale factors in different directions, and observe that they eventually evolve int... |
gr-qc/9411063 | Jerose Martin | Marcus Kriele and Jerome Martin | Black holes, cosmological singularities and change of signature | 14pages, Latex, no figure | Class.Quant.Grav.12:503-512,1995 | 10.1088/0264-9381/12/2/019 | null | gr-qc | null | There exists a widespread belief that signature type change could be used to
avoid spacetime singularities. We show that signature change cannot be utilised
to this end unless the Einstein equation is abandoned at the suface of
signature type change. We also discuss how to solve the initial value problem
and show to ... | [
{
"created": "Fri, 25 Nov 1994 12:58:00 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Kriele",
"Marcus",
""
],
[
"Martin",
"Jerome",
""
]
] | There exists a widespread belief that signature type change could be used to avoid spacetime singularities. We show that signature change cannot be utilised to this end unless the Einstein equation is abandoned at the suface of signature type change. We also discuss how to solve the initial value problem and show to wh... |
2007.15717 | Maximilian Koegler | Bruno Hoegl, Stefan Hofmann, Maximilian Koegler | Physics in precision-dependent normal neighborhoods | 21 pages, 4 figures, minor spelling change, agrees with publication
in Physical Review D | Phys. Rev. D 102, 084065 (2020) | 10.1103/PhysRevD.102.084065 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a procedure to determine the size and shape of normal
neighborhoods in any spacetimes and their dependence on the precision of the
measurements performed by arbitrary observers. As an example, we consider the
Schwarzschild geometry in Riemann and Fermi normal coordinates and determine
the size and shape ... | [
{
"created": "Thu, 30 Jul 2020 20:00:23 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Oct 2020 19:59:09 GMT",
"version": "v2"
}
] | 2020-11-02 | [
[
"Hoegl",
"Bruno",
""
],
[
"Hofmann",
"Stefan",
""
],
[
"Koegler",
"Maximilian",
""
]
] | We introduce a procedure to determine the size and shape of normal neighborhoods in any spacetimes and their dependence on the precision of the measurements performed by arbitrary observers. As an example, we consider the Schwarzschild geometry in Riemann and Fermi normal coordinates and determine the size and shape of... |
1009.5042 | Matyas Vasuth | J\'anos Maj\'ar, P\'eter Forg\'acs, and M\'aty\'as Vas\'uth | Gravitational waves from binaries on unbound orbits | 27 pages, 10 figures, to appear in Phys. Rev. D | Phys.Rev.D82:064041,2010 | 10.1103/PhysRevD.82.064041 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A generalized true anomaly-type parametrization, convenient to describe both
bound and open orbits of a two-body system in general relativity is introduced.
A complete description of the time evolution of both the radial and of the
angular equations of a binary system taking into account the first order
post-newtonia... | [
{
"created": "Sat, 25 Sep 2010 23:25:41 GMT",
"version": "v1"
}
] | 2010-10-05 | [
[
"Majár",
"János",
""
],
[
"Forgács",
"Péter",
""
],
[
"Vasúth",
"Mátyás",
""
]
] | A generalized true anomaly-type parametrization, convenient to describe both bound and open orbits of a two-body system in general relativity is introduced. A complete description of the time evolution of both the radial and of the angular equations of a binary system taking into account the first order post-newtonian ... |
0708.3470 | Andri Gretarsson | Andri M. Gretarsson, Erika D'Ambrosio, Valery Frolov, Brian O'Reilly,
Peter K. Fritschel | Effects of mode degeneracy in the LIGO Livingston Observatory recycling
cavity | Eight pages in two-column format. Six color figures. To be published
JOSA B | null | 10.1364/JOSAB.24.002821 | null | gr-qc | null | We analyze the electromagnetic fields in a Pound-Drever-Hall locked,
marginally unstable, Fabry-Perot cavity as a function of small changes in the
cavity length during resonance. More specifically, we compare the results of a
detailed numerical model with the behavior of the recycling cavity of the Laser
Interferomet... | [
{
"created": "Sun, 26 Aug 2007 08:10:26 GMT",
"version": "v1"
}
] | 2009-11-13 | [
[
"Gretarsson",
"Andri M.",
""
],
[
"D'Ambrosio",
"Erika",
""
],
[
"Frolov",
"Valery",
""
],
[
"O'Reilly",
"Brian",
""
],
[
"Fritschel",
"Peter K.",
""
]
] | We analyze the electromagnetic fields in a Pound-Drever-Hall locked, marginally unstable, Fabry-Perot cavity as a function of small changes in the cavity length during resonance. More specifically, we compare the results of a detailed numerical model with the behavior of the recycling cavity of the Laser Interferometer... |
2001.06490 | Mohammadtaher Safarzadeh | Mohammadtaher Safarzadeh, Will M. Farr, Enrico Ramirez-Ruiz | A trend in the effective spin distribution of LIGO binary black holes
with mass | Accepted for publication in ApJ main journal | null | 10.3847/1538-4357/ab80be | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Binary black holes (BBHs) detected by gravitational wave (GW) observations
could be broadly divided into two formation channels: those formed through
field binary evolution and those assembled dynamically in dense stellar
systems. Each of these formation channels, and their sub-channels, populate a
distinct region in... | [
{
"created": "Fri, 17 Jan 2020 19:00:00 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Mar 2020 13:11:52 GMT",
"version": "v2"
}
] | 2020-05-20 | [
[
"Safarzadeh",
"Mohammadtaher",
""
],
[
"Farr",
"Will M.",
""
],
[
"Ramirez-Ruiz",
"Enrico",
""
]
] | Binary black holes (BBHs) detected by gravitational wave (GW) observations could be broadly divided into two formation channels: those formed through field binary evolution and those assembled dynamically in dense stellar systems. Each of these formation channels, and their sub-channels, populate a distinct region in t... |
gr-qc/0008026 | Kip S. Thorne | H.J. Kimble (1), Yuri Levin (1,2), Andrey B. Matsko (3), Kip S. Thorne
(1), and Sergey P. Vyatchanin (4) ((1) California Institute of Technology,
(2) University of California, Berkeley, (3) Texas A&M University, (4) Moscow
State University) | Conversion of conventional gravitational-wave interferometers into QND
interferometers by modifying their input and/or output optics | Submitted to Physical Review D; RevTeX manuscript with 16 figures;
prints to 33 pages in Physical Review double column format. Minor revisions
have been made in response to referee report | Phys.Rev. D65 (2002) 022002 | 10.1103/PhysRevD.65.022002 | null | gr-qc quant-ph | null | The LIGO-II gravitational-wave interferometers (ca. 2006--2008) are designed
to have sensitivities at about the standard quantum limit (SQL) near 100 Hz.
This paper describes and analyzes possible designs for subsequent, LIGO-III
interferometers that can beat the SQL. These designs are identical to a
conventional bro... | [
{
"created": "Fri, 11 Aug 2000 06:07:43 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Sep 2001 06:03:20 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Kimble",
"H. J.",
""
],
[
"Levin",
"Yuri",
""
],
[
"Matsko",
"Andrey B.",
""
],
[
"Thorne",
"Kip S.",
""
],
[
"Vyatchanin",
"Sergey P.",
""
]
] | The LIGO-II gravitational-wave interferometers (ca. 2006--2008) are designed to have sensitivities at about the standard quantum limit (SQL) near 100 Hz. This paper describes and analyzes possible designs for subsequent, LIGO-III interferometers that can beat the SQL. These designs are identical to a conventional broad... |
0805.1947 | Henrik Zinkernagel | Svend Erik Rugh and Henrik Zinkernagel | On the physical basis of cosmic time | 44 pages. Submitted to Studies in History and Philosophy of Modern
Physics | Stud.Hist.Philos.Mod.Phys.40:1-19,2009 | 10.1016/j.shpsb.2008.06.001 | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this manuscript we initiate a systematic examination of the physical basis
for the time concept in cosmology. We discuss and defend the idea that the
physical basis of the time concept is necessarily related to physical processes
which could conceivably take place among the material constituents available in
the u... | [
{
"created": "Tue, 13 May 2008 22:29:44 GMT",
"version": "v1"
}
] | 2009-02-23 | [
[
"Rugh",
"Svend Erik",
""
],
[
"Zinkernagel",
"Henrik",
""
]
] | In this manuscript we initiate a systematic examination of the physical basis for the time concept in cosmology. We discuss and defend the idea that the physical basis of the time concept is necessarily related to physical processes which could conceivably take place among the material constituents available in the uni... |
gr-qc/9904017 | Wai-Mo Suen | E. S. C. Ching, P. T. Leung, W. M. Suen, S. S. Tong and K. Young | Waves in Open Systems: Eigenfunction Expansions | Review of Modern Physics, 70, 1545, 1998 | Rev.Mod.Phys.70:1545,1998 | 10.1103/RevModPhys.70.1545 | null | gr-qc | null | An open system is not conservative because energy can escape to the outside.
An open system by itself is thus not conservative. As a result, the
time-evolution operator is not hermitian in the usual sense and the
eigenfunctions (factorized solutions in space and time) are no longer normal
modes but quasinormal modes ... | [
{
"created": "Tue, 6 Apr 1999 17:27:16 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Ching",
"E. S. C.",
""
],
[
"Leung",
"P. T.",
""
],
[
"Suen",
"W. M.",
""
],
[
"Tong",
"S. S.",
""
],
[
"Young",
"K.",
""
]
] | An open system is not conservative because energy can escape to the outside. An open system by itself is thus not conservative. As a result, the time-evolution operator is not hermitian in the usual sense and the eigenfunctions (factorized solutions in space and time) are no longer normal modes but quasinormal modes (Q... |
1107.3445 | Lorenzo Iorio | Lorenzo Iorio | Orbital effects of the time-dependent component of the Pioneer anomaly | LaTex2e, 7 pages, no figures, 1 table, 23 references. Version
matching the one at press in Modern Physics Letters A (MPLA) | Mod.Phys.Lett.A 27:1250071,2012 | 10.1142/S021773231250071X | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We work out the impact that the recently determined time-dependent component
of the Pioneer Anomaly (PA), interpreted as an additional exotic acceleration
of gravitational origin with respect to the well known PA-like constant one,
may have on the orbital motions of some planets of the solar system. By
assuming that ... | [
{
"created": "Mon, 18 Jul 2011 14:15:50 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Aug 2011 13:59:42 GMT",
"version": "v2"
},
{
"created": "Mon, 12 Sep 2011 07:45:08 GMT",
"version": "v3"
},
{
"created": "Wed, 7 Mar 2012 10:08:58 GMT",
"version": "v4"
},
{
"cre... | 2012-04-18 | [
[
"Iorio",
"Lorenzo",
""
]
] | We work out the impact that the recently determined time-dependent component of the Pioneer Anomaly (PA), interpreted as an additional exotic acceleration of gravitational origin with respect to the well known PA-like constant one, may have on the orbital motions of some planets of the solar system. By assuming that it... |
gr-qc/0011014 | Bahram Mashhoon | Bahram Mashhoon | Gravitoelectromagnetism | LaTeX file, no figures, 12 pages, Plenary talk given at EREs2000
(Valladolid, Spain, 6-9 September 2000); to be published in Proc. Spanish
Relativity Meeting, edited by J.-F. Pascual-S\'anchez, L. Flor\'ia, A. San
Miguel, and F. Vicente (World Scientific, 2001) | null | 10.1142/9789812810021_0009 | UMC-00-1 | gr-qc | null | Gravitoelectromagnetism is briefly reviewed and some recent developments in
this topic are discussed. The stress-energy content of the
gravitoelectromagnetic field is described from different standpoints. In
particular, the gravitational Poynting flux is analyzed and it is shown that
there exists a steady flow of gra... | [
{
"created": "Fri, 3 Nov 2000 23:23:17 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Mashhoon",
"Bahram",
""
]
] | Gravitoelectromagnetism is briefly reviewed and some recent developments in this topic are discussed. The stress-energy content of the gravitoelectromagnetic field is described from different standpoints. In particular, the gravitational Poynting flux is analyzed and it is shown that there exists a steady flow of gravi... |
1812.00956 | Justin Vines | Justin Vines, Jan Steinhoff, Alessandra Buonanno | Spinning-black-hole scattering and the test-black-hole limit at second
post-Minkowskian order | v2: corrected misstatements in Sec. IV.C regarding the amount of
residual gauge freedom within quasi-isotropic gauges for aligned-spin
canonical Hamiltonians; no changes in any results or conclusions; improved
discussion in Sections III-VI | Phys. Rev. D 99, 064054 (2019) | 10.1103/PhysRevD.99.064054 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, the gravitational scattering of two black holes (BHs) treated at
the leading order in the weak-field, or post-Minkowskian (PM), approximation to
General Relativity has been shown to map bijectively onto a simpler effectively
one-body process: the scattering of a test BH in a stationary BH spacetime.
Here, f... | [
{
"created": "Mon, 3 Dec 2018 18:27:02 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Sep 2019 16:53:50 GMT",
"version": "v2"
}
] | 2019-09-11 | [
[
"Vines",
"Justin",
""
],
[
"Steinhoff",
"Jan",
""
],
[
"Buonanno",
"Alessandra",
""
]
] | Recently, the gravitational scattering of two black holes (BHs) treated at the leading order in the weak-field, or post-Minkowskian (PM), approximation to General Relativity has been shown to map bijectively onto a simpler effectively one-body process: the scattering of a test BH in a stationary BH spacetime. Here, for... |
0812.4383 | Andrzej Borowiec | A. Borowiec (Wroclaw U., JINR Dubna) | From Dark Energy to Dark Matter via Non-Minimal Coupling | 6 pages in revtex, contribution to the special volume "Problems of
Modern Cosmology", TSPU publishing - in press | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Toy cosmological models based on non-minimal coupling between gravity and
scalar dilaton-like field are presented in the framework of Palatini formalism.
They have the following property: preceding to a given cosmological epoch is a
dark energy epoch with an accelerated expansion. The next (future) epoch
becomes domi... | [
{
"created": "Tue, 23 Dec 2008 12:43:30 GMT",
"version": "v1"
}
] | 2008-12-24 | [
[
"Borowiec",
"A.",
"",
"Wroclaw U., JINR Dubna"
]
] | Toy cosmological models based on non-minimal coupling between gravity and scalar dilaton-like field are presented in the framework of Palatini formalism. They have the following property: preceding to a given cosmological epoch is a dark energy epoch with an accelerated expansion. The next (future) epoch becomes domina... |
gr-qc/0205121 | D. V. Ahluwalia | D. V. Ahluwalia (Zacateacs) | Interface of Gravitational and Quantum Realms | Invited talk, First IUCAA Meeting on the Interafce of Gravitational
and Quantum Realms | Mod.Phys.Lett.A17:1135,2002 | 10.1142/S021773230200765X | null | gr-qc | null | The talk centers around the question: Can general-relativistic description of
physical reality be considered complete? On the way I argue how -- unknown to
many a physicists, even today -- the ``forty orders of magnitude argument''
against quantum gravity phenomenology was defeated more than a quarter of a
century ag... | [
{
"created": "Wed, 29 May 2002 18:23:32 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Ahluwalia",
"D. V.",
"",
"Zacateacs"
]
] | The talk centers around the question: Can general-relativistic description of physical reality be considered complete? On the way I argue how -- unknown to many a physicists, even today -- the ``forty orders of magnitude argument'' against quantum gravity phenomenology was defeated more than a quarter of a century ago,... |
1306.5932 | Zhengxiang Li | Zhengxiang Li, Kai Liao, Puxun Wu, Hongwei Yu, and Zong-Hong Zhu | Probing modified gravity theories with the Sandage-Loeb test | 18 pages, 6 figures, typos corrected and three references added, to
be published in Phys. Rev. D | Physical Review D 88, 023003 (2013) | 10.1103/PhysRevD.88.023003 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we quantify the ability of a future measurement of the
Sandage-Loeb test signal from the Cosmic-Dynamic-Experiment-like spectrograph
to constrain some popular modified gravity theories including DGP brane-world
scenario, $f(R)$ modified gravity and $f(T)$ gravity theory. We find that the
Sandage-Loeb t... | [
{
"created": "Tue, 25 Jun 2013 12:11:35 GMT",
"version": "v1"
},
{
"created": "Sun, 14 Jul 2013 02:48:14 GMT",
"version": "v2"
}
] | 2013-07-16 | [
[
"Li",
"Zhengxiang",
""
],
[
"Liao",
"Kai",
""
],
[
"Wu",
"Puxun",
""
],
[
"Yu",
"Hongwei",
""
],
[
"Zhu",
"Zong-Hong",
""
]
] | In this paper, we quantify the ability of a future measurement of the Sandage-Loeb test signal from the Cosmic-Dynamic-Experiment-like spectrograph to constrain some popular modified gravity theories including DGP brane-world scenario, $f(R)$ modified gravity and $f(T)$ gravity theory. We find that the Sandage-Loeb tes... |
1404.6226 | Sergey Yu. Vernov | Maria A. Skugoreva, Alexey V. Toporensky, Sergey Yu. Vernov | Global stability analysis for cosmological models with non-minimally
coupled scalar fields | 21 pages, 9 figures, v2: references added, accepted for publication
in PRD | Phys. Rev. D 90, 064044 (2014) | 10.1103/PhysRevD.90.064044 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore dynamics of cosmological models with a nonminimally coupled scalar
field evolving on a spatially flat Friedmann-Lemaitre-Robertson-Walker
background. We consider cosmological models including the Hilbert-Einstein
curvature term and the $N$ degree monomial of the scalar field nonminimally
coupled to gravity... | [
{
"created": "Thu, 24 Apr 2014 19:01:44 GMT",
"version": "v1"
},
{
"created": "Sun, 14 Sep 2014 07:35:04 GMT",
"version": "v2"
}
] | 2014-10-01 | [
[
"Skugoreva",
"Maria A.",
""
],
[
"Toporensky",
"Alexey V.",
""
],
[
"Vernov",
"Sergey Yu.",
""
]
] | We explore dynamics of cosmological models with a nonminimally coupled scalar field evolving on a spatially flat Friedmann-Lemaitre-Robertson-Walker background. We consider cosmological models including the Hilbert-Einstein curvature term and the $N$ degree monomial of the scalar field nonminimally coupled to gravity. ... |
2205.01350 | Sanjar Shaymatov | Sanjar Shaymatov, Naresh Dadhich | Extending the weak cosmic censorship conjecture to the charged Buchdahl
star by employing the gedanken experiments | 17 pages, no figures. Updated to match with the published version | JCAP 06 (2023) 010 | 10.1088/1475-7516/2023/06/010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we wish to investigate the weak cosmic censorship conjecture
(WCCC) for the non black hole object, Buchdahl star and test its validity. It
turns out that the extremal limit for the star is over-extremal for black hole,
$Q^2/M^2 \leq 9/8 >1$; i.e., it could have $9/8 \geq Q^2/M^2 > 1$. By carrying
out b... | [
{
"created": "Tue, 3 May 2022 07:21:36 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Jun 2023 11:22:28 GMT",
"version": "v2"
}
] | 2023-06-14 | [
[
"Shaymatov",
"Sanjar",
""
],
[
"Dadhich",
"Naresh",
""
]
] | In this paper, we wish to investigate the weak cosmic censorship conjecture (WCCC) for the non black hole object, Buchdahl star and test its validity. It turns out that the extremal limit for the star is over-extremal for black hole, $Q^2/M^2 \leq 9/8 >1$; i.e., it could have $9/8 \geq Q^2/M^2 > 1$. By carrying out bot... |
2004.01233 | Kirill Bronnikov | K.A. Bronnikov | On variations of $G$ in the geometric scalar theory of gravity | 7 two-column pages, no figures. A few references added | Euro Phys. J. C 80, 434 (2020) | 10.1140/epjc/s10052-020-8012-9 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the possible variability of the effective Newtonian gravitational
constant $G_{\rm N}$ in space and time in the framework of the geometric scalar
theory of gravity suggested by M. Novello et al. [JCAP 06, 014 (2013); arXiv:
1212.0770]. Spatial variations of $G_{\rm N}$ in the Solar system are shown to
have... | [
{
"created": "Thu, 2 Apr 2020 19:22:24 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Apr 2020 15:43:46 GMT",
"version": "v2"
}
] | 2020-10-20 | [
[
"Bronnikov",
"K. A.",
""
]
] | We analyze the possible variability of the effective Newtonian gravitational constant $G_{\rm N}$ in space and time in the framework of the geometric scalar theory of gravity suggested by M. Novello et al. [JCAP 06, 014 (2013); arXiv: 1212.0770]. Spatial variations of $G_{\rm N}$ in the Solar system are shown to have o... |
0807.1832 | Tekin Dereli | M. Adak, T. Dereli | String-Inspired Chern-Simons Modified Gravity In 4-Dimensions | To appear in the European Physics Journal C | Eur. Phys. J. C 72 (2012) 1979 | 10.1140/epjc/s10052-012-1979-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Chern-Simons modified gravity models in 4-dimensions are shown to be special
cases of low energy effective string models to first order in the string
constant.
| [
{
"created": "Fri, 11 Jul 2008 12:10:31 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Jan 2010 09:29:04 GMT",
"version": "v2"
},
{
"created": "Mon, 2 Apr 2012 05:54:18 GMT",
"version": "v3"
}
] | 2012-05-01 | [
[
"Adak",
"M.",
""
],
[
"Dereli",
"T.",
""
]
] | Chern-Simons modified gravity models in 4-dimensions are shown to be special cases of low energy effective string models to first order in the string constant. |
gr-qc/9610012 | Ali Mostafazadeh | Ali Mostafazadeh | Two-Component Formulation of the Wheeler-DeWitt Equation | Substantially improved version. Some new observations and nine
figures are added. An explicit example is worked out | J.Math.Phys. 39 (1998) 4499-4512 | 10.1063/1.532522 | University of Alberta preprint no: Thy 36-96 | gr-qc hep-th | null | The Wheeler-DeWitt equation for the minimally coupled
FRW-massive-scalar-field minisuperspace is written as a two-component
Schr\"odinger equation with an explicitly `time'-dependent Hamiltonian. This
reduces the solution of the Wheeler-DeWitt equation to the eigenvalue problem
for a non-relativistic one-dimensional ... | [
{
"created": "Wed, 9 Oct 1996 20:06:44 GMT",
"version": "v1"
},
{
"created": "Sun, 20 Oct 1996 02:34:11 GMT",
"version": "v2"
},
{
"created": "Tue, 21 Jan 1997 23:52:13 GMT",
"version": "v3"
}
] | 2009-10-28 | [
[
"Mostafazadeh",
"Ali",
""
]
] | The Wheeler-DeWitt equation for the minimally coupled FRW-massive-scalar-field minisuperspace is written as a two-component Schr\"odinger equation with an explicitly `time'-dependent Hamiltonian. This reduces the solution of the Wheeler-DeWitt equation to the eigenvalue problem for a non-relativistic one-dimensional ha... |
1603.07756 | Sean Leavey | S. S. Leavey, S. L. Danilishin, A. Gl\"afke, B. W. Barr, A. S. Bell,
C. Gr\"af, J.-S. Hennig, E. A. Houston, S. H. Huttner, H. L\"uck, D.
Pascucci, K. Somiya, B. Sorazu, A. Spencer, S. Steinlechner, K. A. Strain, J.
Wright, T. Zhang, S. Hild | Control of a velocity-sensitive audio-band quantum non-demolition
interferometer | null | null | null | null | gr-qc astro-ph.IM quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Sagnac speed meter interferometer topology can potentially provide
enhanced sensitivity to gravitational waves in the audio-band compared to
equivalent Michelson interferometers. A challenge with the Sagnac speed meter
interferometer arises from the intrinsic lack of sensitivity at low frequencies
where the veloc... | [
{
"created": "Thu, 24 Mar 2016 21:05:17 GMT",
"version": "v1"
}
] | 2016-03-28 | [
[
"Leavey",
"S. S.",
""
],
[
"Danilishin",
"S. L.",
""
],
[
"Gläfke",
"A.",
""
],
[
"Barr",
"B. W.",
""
],
[
"Bell",
"A. S.",
""
],
[
"Gräf",
"C.",
""
],
[
"Hennig",
"J. -S.",
""
],
[
"Houston",
"... | The Sagnac speed meter interferometer topology can potentially provide enhanced sensitivity to gravitational waves in the audio-band compared to equivalent Michelson interferometers. A challenge with the Sagnac speed meter interferometer arises from the intrinsic lack of sensitivity at low frequencies where the velocit... |
2111.13900 | Polina Dyadina | P. I. Dyadina, S. P. Labazova | On Shapiro time delay in massive scalar-tensor theories | 10 pages, submitted to JCAP | JCAP 01(2022)029 | 10.1088/1475-7516/2022/01/029 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The problem of determining the post-Newtonian parameter $\gamma$ in massive
scalar-tensor theories is considered. We demonstrate equivalent correspondence
between the post-Newtonian parameter $\gamma$ and the parameter appearing in
the equation of null geodysic in massive scalar-tensor theories. We show that
massive ... | [
{
"created": "Sat, 27 Nov 2021 13:59:01 GMT",
"version": "v1"
}
] | 2022-02-03 | [
[
"Dyadina",
"P. I.",
""
],
[
"Labazova",
"S. P.",
""
]
] | The problem of determining the post-Newtonian parameter $\gamma$ in massive scalar-tensor theories is considered. We demonstrate equivalent correspondence between the post-Newtonian parameter $\gamma$ and the parameter appearing in the equation of null geodysic in massive scalar-tensor theories. We show that massive sc... |
1603.05404 | Ellery Ames | Ellery Ames, H{\aa}kan Andr\'easson, Anders Logg | On Axisymmetric and Stationary Solutions of the Self-Gravitating Vlasov
System | 24 pages | Classical and Quantum Gravity 33(15):155008, 2016 | 10.1088/0264-9381/33/15/155008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Axisymmetric and stationary solutions are constructed to the Einstein--Vlasov
and Vlasov--Poisson systems. These solutions are constructed numerically, using
finite element methods and a fixed-point iteration in which the total mass is
fixed at each step. A variety of axisymmetric stationary solutions are
exhibited, ... | [
{
"created": "Thu, 17 Mar 2016 09:39:41 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Apr 2018 15:29:41 GMT",
"version": "v2"
}
] | 2018-04-11 | [
[
"Ames",
"Ellery",
""
],
[
"Andréasson",
"Håkan",
""
],
[
"Logg",
"Anders",
""
]
] | Axisymmetric and stationary solutions are constructed to the Einstein--Vlasov and Vlasov--Poisson systems. These solutions are constructed numerically, using finite element methods and a fixed-point iteration in which the total mass is fixed at each step. A variety of axisymmetric stationary solutions are exhibited, in... |
gr-qc/9907064 | Zc | Zhong Chao Wu (BNU & Uct) | Quantum Creation of Topological Black Hole | Report-no change only | Mod.Phys.Lett. A15 (2000) 1589 | 10.1142/S0217732300001857 | uct-cosmology-99/02 | gr-qc astro-ph hep-th | null | The constrained instanton method is used to study quantum creation of a
vacuum or charged topological black hole. At the $WKB$ level, the relative
creation probability is the exponential of a quarter sum of the horizon areas
associated with the seed instanton.
| [
{
"created": "Tue, 20 Jul 1999 19:25:36 GMT",
"version": "v1"
},
{
"created": "Sun, 25 Jul 1999 10:20:53 GMT",
"version": "v2"
},
{
"created": "Thu, 29 Jul 1999 08:15:49 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Wu",
"Zhong Chao",
"",
"BNU & Uct"
]
] | The constrained instanton method is used to study quantum creation of a vacuum or charged topological black hole. At the $WKB$ level, the relative creation probability is the exponential of a quarter sum of the horizon areas associated with the seed instanton. |
1506.09116 | Davide Gerosa | Davide Gerosa, Michael Kesden, Richard O'Shaughnessy, Antoine Klein,
Emanuele Berti, Ulrich Sperhake, Daniele Trifir\`o | Precessional instability in binary black holes with aligned spins | Accepted for publication in PRL. Animations available at
http://davidegerosa.com/spinprecession/ | Phys. Rev. Lett. 115, 141102 (2015) | 10.1103/PhysRevLett.115.141102 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Binary black holes on quasicircular orbits with spins aligned with their
orbital angular momentum have been testbeds for analytic and numerical
relativity for decades, not least because symmetry ensures that such
configurations are equilibrium solutions to the spin-precession equations. In
this work, we show that the... | [
{
"created": "Tue, 30 Jun 2015 15:23:29 GMT",
"version": "v1"
},
{
"created": "Mon, 5 Oct 2015 08:53:28 GMT",
"version": "v2"
}
] | 2015-10-06 | [
[
"Gerosa",
"Davide",
""
],
[
"Kesden",
"Michael",
""
],
[
"O'Shaughnessy",
"Richard",
""
],
[
"Klein",
"Antoine",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Sperhake",
"Ulrich",
""
],
[
"Trifirò",
"Daniele",
""
... | Binary black holes on quasicircular orbits with spins aligned with their orbital angular momentum have been testbeds for analytic and numerical relativity for decades, not least because symmetry ensures that such configurations are equilibrium solutions to the spin-precession equations. In this work, we show that these... |
1903.10682 | Dieter Van den Bleeken | Dieter Van den Bleeken | Torsional Newton-Cartan gravity and strong gravitational fields | Proceedings of talk at Fifteenth Marcel Grossmann Meeting. 6p | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review how the large $c$ expansion of General Relativity leads to an
effective theory in the form of Twistless Torsional Newton-Cartan gravity. We
show how this is a strong field expansion around the static sector of General
Relativity and illustrate this through two examples.
| [
{
"created": "Tue, 26 Mar 2019 05:29:05 GMT",
"version": "v1"
}
] | 2019-03-27 | [
[
"Bleeken",
"Dieter Van den",
""
]
] | We review how the large $c$ expansion of General Relativity leads to an effective theory in the form of Twistless Torsional Newton-Cartan gravity. We show how this is a strong field expansion around the static sector of General Relativity and illustrate this through two examples. |
gr-qc/0504059 | Florian Conrady | Florian Conrady (CPT, Marseille & Potsdam, Max Planck Inst.) | Geometric spin foams, Yang-Mills theory and background-independent
models | 28 pages, 27 diagrams, typos corrected | null | null | AEI-2005-090 | gr-qc hep-th | null | We review the dual transformation from pure lattice gauge theory to spin foam
models with an emphasis on a geometric viewpoint. This allows us to give a
simple dual formulation of SU(N) Yang-Mills theory, where spin foam surfaces
are weighted with the exponentiated area. In the case of gravity, we introduce
a symmetr... | [
{
"created": "Wed, 13 Apr 2005 14:49:06 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Apr 2005 09:50:22 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Conrady",
"Florian",
"",
"CPT, Marseille & Potsdam, Max Planck Inst."
]
] | We review the dual transformation from pure lattice gauge theory to spin foam models with an emphasis on a geometric viewpoint. This allows us to give a simple dual formulation of SU(N) Yang-Mills theory, where spin foam surfaces are weighted with the exponentiated area. In the case of gravity, we introduce a symmetry ... |
2108.05445 | Andrea Geralico | Donato Bini, Andrea Geralico | Higher-order tail contributions to the energy and angular momentum
fluxes in a two-body scattering process | 14 pages, 1 figure (2 eps files), revtex macros used; v2: Eq. (4.14)
corrected | null | 10.1103/PhysRevD.104.104020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The need for more and more accurate gravitational wave templates requires
taking into account all possible contributions to the emission of gravitational
radiation from a binary system. Therefore, working within a
multipolar-post-Minkowskian framework to describe the gravitational wave field
in terms of the source mu... | [
{
"created": "Wed, 11 Aug 2021 21:06:41 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Mar 2022 10:29:27 GMT",
"version": "v2"
}
] | 2022-03-17 | [
[
"Bini",
"Donato",
""
],
[
"Geralico",
"Andrea",
""
]
] | The need for more and more accurate gravitational wave templates requires taking into account all possible contributions to the emission of gravitational radiation from a binary system. Therefore, working within a multipolar-post-Minkowskian framework to describe the gravitational wave field in terms of the source mult... |
1503.02326 | Valerio Faraoni | Valerio Faraoni, Marianne Lapierre-Leonard, Angus Prain | Do Newtonian large-scale structure simulations fail to include
relativistic effects? | 7 pages | Phys. Rev. D 92, 023511 (2015) | 10.1103/PhysRevD.92.023511 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Newtonian simulations describing the formation of large-scale structures
do not include relativistic effects. A new approach to this problem is
proposed, which consists of splitting the Hawking-Hayward quasi-local energy of
a closed spacelike 2-surface into a "Newtonian" part due to local perturbations
and a "rel... | [
{
"created": "Sun, 8 Mar 2015 21:35:04 GMT",
"version": "v1"
}
] | 2015-07-15 | [
[
"Faraoni",
"Valerio",
""
],
[
"Lapierre-Leonard",
"Marianne",
""
],
[
"Prain",
"Angus",
""
]
] | The Newtonian simulations describing the formation of large-scale structures do not include relativistic effects. A new approach to this problem is proposed, which consists of splitting the Hawking-Hayward quasi-local energy of a closed spacelike 2-surface into a "Newtonian" part due to local perturbations and a "relat... |
0906.2921 | Sergey S. Kokarev | Sergey S. Kokarev | Are different geometries really that different? | 13 pages, 2 figures, talk that will be presented at PIRT-2009, July
(Russia), one misprint is removed, formulation of the theorem is made more
clear | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Here is presented a concept of centrogeometry which can be seen as a
combination of the concept of point-like observer with an idea of
Poincar\'{e}'s that different geometries are principally equivalent. As it is
to be shown later, all centrogeometries are obtained from each other by general
deformation (i.e. active ... | [
{
"created": "Tue, 16 Jun 2009 13:03:55 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Nov 2009 11:15:08 GMT",
"version": "v2"
}
] | 2009-11-09 | [
[
"Kokarev",
"Sergey S.",
""
]
] | Here is presented a concept of centrogeometry which can be seen as a combination of the concept of point-like observer with an idea of Poincar\'{e}'s that different geometries are principally equivalent. As it is to be shown later, all centrogeometries are obtained from each other by general deformation (i.e. active co... |
1412.8123 | Parthapratim Pradhan | Parthapratim Pradhan | Circular Geodesics in Tidal Charged Black Hole | Version accepted in IJGMMP | Int. J. Geom. Methods Mod. Phys. Vol. 14 (2018) 185011 (26 pages) | 10.1142/S0219887818500111 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the existence and stability criteria for circular geodesics of
spherically symmetric tidal charged black hole~(BH). We investigate in details
the equatorial causal geodesics of the tidal charged BH in comparison with
spherically symmetric Reissner-Nordstr\"{o}m BH spacetime. We particularly
focused on both t... | [
{
"created": "Sun, 28 Dec 2014 07:26:39 GMT",
"version": "v1"
},
{
"created": "Mon, 25 Sep 2017 16:40:23 GMT",
"version": "v2"
}
] | 2017-09-26 | [
[
"Pradhan",
"Parthapratim",
""
]
] | We study the existence and stability criteria for circular geodesics of spherically symmetric tidal charged black hole~(BH). We investigate in details the equatorial causal geodesics of the tidal charged BH in comparison with spherically symmetric Reissner-Nordstr\"{o}m BH spacetime. We particularly focused on both the... |
1601.01662 | Ali Masoumi | Ali Masoumi and Alexander Vilenkin | Vacuum statistics and stability in axionic landscapes | 37 pages, 19 figures. (References and one paragraph added. ) | null | 10.1088/1475-7516/2016/03/054 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate vacuum statistics and stability in random axionic landscapes.
For this purpose we developed an algorithm for a quick evaluation of the
tunneling action, which in most cases is accurate within 10%. We find that
stability of a vacuum is strongly correlated with its energy density, with
lifetime rapidly g... | [
{
"created": "Thu, 7 Jan 2016 20:46:41 GMT",
"version": "v1"
},
{
"created": "Sun, 24 Jan 2016 02:04:50 GMT",
"version": "v2"
}
] | 2016-04-13 | [
[
"Masoumi",
"Ali",
""
],
[
"Vilenkin",
"Alexander",
""
]
] | We investigate vacuum statistics and stability in random axionic landscapes. For this purpose we developed an algorithm for a quick evaluation of the tunneling action, which in most cases is accurate within 10%. We find that stability of a vacuum is strongly correlated with its energy density, with lifetime rapidly gro... |
0904.2008 | Leonid V. Verozub | Leonid Verozub | Space-Based Gravity Detector for a Space Laboratory | 4 pages, 4 figures, | Class.Quant.Grav.17:2455-2458,2000 | 10.1088/0264-9381/17/12/317 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A space-based superconducting gravitational low-frequency wave detector is
considered. Sensitivity of the detector is sufficient to use the detector as a
partner of other contemporary low-frequency detectors like LIGO and LISA. This
device can also be very useful for experimental study of other effects
predicted by t... | [
{
"created": "Mon, 13 Apr 2009 20:18:39 GMT",
"version": "v1"
}
] | 2009-04-21 | [
[
"Verozub",
"Leonid",
""
]
] | A space-based superconducting gravitational low-frequency wave detector is considered. Sensitivity of the detector is sufficient to use the detector as a partner of other contemporary low-frequency detectors like LIGO and LISA. This device can also be very useful for experimental study of other effects predicted by the... |
1711.10943 | Edward Wilson-Ewing | Edward Wilson-Ewing | The loop quantum cosmology bounce as a Kasner transition | 28 pages. v2: Minor clarifications, references added | Class.Quant.Grav. 35 (2018) 065005 | 10.1088/1361-6382/aaab8b | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For the Bianchi type I space-time (vacuum or with a massless scalar field),
the loop quantum cosmology bounce can be viewed as a rapid transition between
two classical solutions, with a simple transformation rule relating the Kasner
exponents of the two epochs. This transformation rule can be extended to other
Bianch... | [
{
"created": "Wed, 29 Nov 2017 16:25:27 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Feb 2018 14:32:52 GMT",
"version": "v2"
}
] | 2018-03-14 | [
[
"Wilson-Ewing",
"Edward",
""
]
] | For the Bianchi type I space-time (vacuum or with a massless scalar field), the loop quantum cosmology bounce can be viewed as a rapid transition between two classical solutions, with a simple transformation rule relating the Kasner exponents of the two epochs. This transformation rule can be extended to other Bianchi ... |
gr-qc/0506040 | Valerio Bozza | V. Bozza, G. Veneziano | Regular two-component bouncing cosmologies and perturbations therein | 19 pages, 9 figures | JCAP 0509:007,2005 | 10.1088/1475-7516/2005/09/007 | null | gr-qc hep-th | null | We present a full investigation of scalar perturbations in a rather generic
model for a regular bouncing universe, where the bounce is triggered by an
effective perfect fluid with negative energy density. Long before and after the
bounce the universe is dominated by a source with positive energy density,
which may be... | [
{
"created": "Tue, 7 Jun 2005 07:53:16 GMT",
"version": "v1"
},
{
"created": "Thu, 8 Sep 2005 16:20:53 GMT",
"version": "v2"
}
] | 2009-07-09 | [
[
"Bozza",
"V.",
""
],
[
"Veneziano",
"G.",
""
]
] | We present a full investigation of scalar perturbations in a rather generic model for a regular bouncing universe, where the bounce is triggered by an effective perfect fluid with negative energy density. Long before and after the bounce the universe is dominated by a source with positive energy density, which may be a... |
2310.16796 | Hong-Bo Jin | Pan Guo, Hong-Bo Jin, Cong-Feng Qiao and Yue-Liang Wu | Sky location of Galactic white dwarf binaries in space-based
gravitational wave detection | 22 pages, 15 figures | Results in Physics, 2024 | 10.1016/j.rinp.2024.107607 | null | gr-qc astro-ph.GA | http://creativecommons.org/licenses/by/4.0/ | Quickly localizing the identified white dwarf (WD) binaries is the basic
requirement for the space-based gravitational wave (GW) detection. In fact, the
amplitude of GW signals are modulated by the periodic motion of GW detectors on
the solar orbit. The intensity of the observed signals is enhanced according to
the o... | [
{
"created": "Wed, 25 Oct 2023 17:25:08 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Mar 2024 00:34:39 GMT",
"version": "v2"
}
] | 2024-04-01 | [
[
"Guo",
"Pan",
""
],
[
"Jin",
"Hong-Bo",
""
],
[
"Qiao",
"Cong-Feng",
""
],
[
"Wu",
"Yue-Liang",
""
]
] | Quickly localizing the identified white dwarf (WD) binaries is the basic requirement for the space-based gravitational wave (GW) detection. In fact, the amplitude of GW signals are modulated by the periodic motion of GW detectors on the solar orbit. The intensity of the observed signals is enhanced according to the obs... |
1903.06067 | Paul Tod | Ho Lee, Ernesto Nungesser and Paul Tod | The massless Einstein-Boltzmann system with a conformal-gauge
singularity in an FLRW background | 26 pages, no figures; this revised version is as accepted by CQG | null | 10.1088/1361-6382/ab5f41 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain finite-time existence for the massless Boltzmann equation, with a
range of soft cross-sections, in an FLRW background with data given at the
initial singularity. In the case of positive cosmological constant we obtain
long-time existence in proper-time for small data as a corollary.
| [
{
"created": "Thu, 14 Mar 2019 15:16:20 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Dec 2019 16:03:24 GMT",
"version": "v2"
}
] | 2020-01-29 | [
[
"Lee",
"Ho",
""
],
[
"Nungesser",
"Ernesto",
""
],
[
"Tod",
"Paul",
""
]
] | We obtain finite-time existence for the massless Boltzmann equation, with a range of soft cross-sections, in an FLRW background with data given at the initial singularity. In the case of positive cosmological constant we obtain long-time existence in proper-time for small data as a corollary. |
2210.14025 | Stephanie Brown | Stephanie M. Brown | Tidal Deformability of Neutron Stars in Scalar-Tensor Theories of
Gravity | Accepted to APJ | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves from compact binary coalescences are valuable for testing
theories of gravity in the strong field regime. By measuring neutron star tidal
deformability using gravitational waves from binary neutron stars, stringent
constraints were placed on the equation of state of matter at extreme
densities. Ti... | [
{
"created": "Tue, 25 Oct 2022 13:58:30 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Sep 2023 17:13:18 GMT",
"version": "v2"
}
] | 2023-09-25 | [
[
"Brown",
"Stephanie M.",
""
]
] | Gravitational waves from compact binary coalescences are valuable for testing theories of gravity in the strong field regime. By measuring neutron star tidal deformability using gravitational waves from binary neutron stars, stringent constraints were placed on the equation of state of matter at extreme densities. Tida... |
gr-qc/9701013 | Joy Christian | Joy Christian (Perimeter and Oxford) | Exactly Soluble Sector of Quantum Gravity | 83 pages (TeX). A note is added on the early work of a remarkable
Soviet physicist called Bronstein, especially on his insightful contribution
to "the cube of theories" (Fig. 1) -- see "Note Added to Proof" on pages 71
and 72, together with the new references [59] and [61] | Phys.Rev.D56:4844-4877,1997 | 10.1103/PhysRevD.56.4844 | null | gr-qc hep-th quant-ph | null | Cartan's spacetime reformulation of the Newtonian theory of gravity is a
generally-covariant Galilean-relativistic limit-form of Einstein's theory of
gravity known as the Newton-Cartan theory. According to this theory, space is
flat, time is absolute with instantaneous causal influences, and the degenerate
`metric' s... | [
{
"created": "Thu, 9 Jan 1997 15:55:42 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Jul 1997 11:57:25 GMT",
"version": "v2"
},
{
"created": "Tue, 7 Oct 1997 18:32:13 GMT",
"version": "v3"
},
{
"created": "Mon, 7 Nov 2005 21:09:09 GMT",
"version": "v4"
}
] | 2011-09-09 | [
[
"Christian",
"Joy",
"",
"Perimeter and Oxford"
]
] | Cartan's spacetime reformulation of the Newtonian theory of gravity is a generally-covariant Galilean-relativistic limit-form of Einstein's theory of gravity known as the Newton-Cartan theory. According to this theory, space is flat, time is absolute with instantaneous causal influences, and the degenerate `metric' str... |
gr-qc/0110045 | J. Daniel Christensen | J. Daniel Christensen and Greg Egan | An efficient algorithm for the Riemannian 10j symbols | 9 pages, 5 postscript figures. This is the version that is to appear
in Classical and Quantum Gravity. See also http://jdc.math.uwo.ca/spin-foams | Class.Quant.Grav. 19 (2002) 1185-1194 | 10.1088/0264-9381/19/6/310 | null | gr-qc | null | The 10j symbol is a spin network that appears in the partition function for
the Barrett-Crane model of Riemannian quantum gravity. Elementary methods of
calculating the 10j symbol require order(j^9) or more operations and order(j^2)
or more space, where j is the average spin. We present an algorithm that
computes the... | [
{
"created": "Tue, 9 Oct 2001 01:31:46 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Nov 2001 01:36:26 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Jan 2002 18:42:28 GMT",
"version": "v3"
}
] | 2009-11-07 | [
[
"Christensen",
"J. Daniel",
""
],
[
"Egan",
"Greg",
""
]
] | The 10j symbol is a spin network that appears in the partition function for the Barrett-Crane model of Riemannian quantum gravity. Elementary methods of calculating the 10j symbol require order(j^9) or more operations and order(j^2) or more space, where j is the average spin. We present an algorithm that computes the 1... |
1807.01998 | Jean-Marie Vigoureux | Jean-Marie Vigoureux | Quantum Theory and Special Relativity: when are physical properties
attributed jointly to the system and to the context in which it is studied? | 11 pages, 3 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Alexia Auff\`eves and Philippe Grangier proposed to modify the quantum
ontology by requiring that physical properties are attributed jointly to the
system and to the context in which it is embedded. Comparing the formal
structures of Quantum Theory and of Special Relativity may suggest a basis for
such an interpretat... | [
{
"created": "Wed, 4 Jul 2018 16:55:30 GMT",
"version": "v1"
}
] | 2018-07-06 | [
[
"Vigoureux",
"Jean-Marie",
""
]
] | Alexia Auff\`eves and Philippe Grangier proposed to modify the quantum ontology by requiring that physical properties are attributed jointly to the system and to the context in which it is embedded. Comparing the formal structures of Quantum Theory and of Special Relativity may suggest a basis for such an interpretatio... |
0912.0459 | L\'aszl\'o \'A Gergely | L\'aszl\'o \'Arp\'ad Gergely | Spinning compact binary inspiral: Independent variables and dynamically
preserved spin configurations | 13 pages, 2 figures, subsection IV.A improved, published version | Phys.Rev.D81:084025,2010 | 10.1103/PhysRevD.81.084025 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We establish the set of independent variables suitable to monitor the
complicated evolution of the spinning compact binary during the inspiral. Our
approach is valid up to the second post-Newtonian order, including leading
order spin-orbit, spin-spin and mass quadrupol-mass monopole effects, for
generic (noncircular,... | [
{
"created": "Wed, 2 Dec 2009 16:37:16 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Feb 2010 10:51:06 GMT",
"version": "v2"
},
{
"created": "Tue, 11 May 2010 05:34:01 GMT",
"version": "v3"
}
] | 2010-05-12 | [
[
"Gergely",
"László Árpád",
""
]
] | We establish the set of independent variables suitable to monitor the complicated evolution of the spinning compact binary during the inspiral. Our approach is valid up to the second post-Newtonian order, including leading order spin-orbit, spin-spin and mass quadrupol-mass monopole effects, for generic (noncircular, n... |
2102.13556 | Jan Henryk Kwapisz | Jan Chojnacki and Jan H. Kwapisz | Finite Action Principle and Horava-Lifshitz Gravity: early universe,
black holes and wormholes | Matches the version accepted in PRD, one minor mistake corrected | null | 10.1103/PhysRevD.104.103504 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | The destructive interference of the neighbouring field configurations with
infinite classical action in the gravitational path integral approach serves as
a dynamical mechanism resolving the black hole singularity problem. It also
provides an isotropic and homogeneous early universe without the need of
inflation. In ... | [
{
"created": "Fri, 26 Feb 2021 15:50:27 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Mar 2021 14:22:22 GMT",
"version": "v2"
},
{
"created": "Mon, 31 May 2021 17:21:48 GMT",
"version": "v3"
},
{
"created": "Thu, 10 Jun 2021 10:26:11 GMT",
"version": "v4"
},
{
"cr... | 2021-11-17 | [
[
"Chojnacki",
"Jan",
""
],
[
"Kwapisz",
"Jan H.",
""
]
] | The destructive interference of the neighbouring field configurations with infinite classical action in the gravitational path integral approach serves as a dynamical mechanism resolving the black hole singularity problem. It also provides an isotropic and homogeneous early universe without the need of inflation. In th... |
gr-qc/0207069 | Jose A. Gonzalez | Daniel Sudarsky and Jose Antonio Gonzalez | On Black Hole Scalar Hair in Asymptotically Anti de Sitter Spacetimes | 12 pages. Published version | Phys.Rev.D67:024038,2003 | 10.1103/PhysRevD.67.024038 | null | gr-qc | null | The unexpected discovery of hairy black hole solutions in theories with
scalar fields simply by considering asymptotically Anti de-Sitter, rather than
asymptotically flat, boundary conditions is analyzed in a way that exhibits in
a clear manner the differences between the two situations.
It is shown that the trivia... | [
{
"created": "Thu, 18 Jul 2002 01:12:33 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Mar 2003 22:57:23 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Sudarsky",
"Daniel",
""
],
[
"Gonzalez",
"Jose Antonio",
""
]
] | The unexpected discovery of hairy black hole solutions in theories with scalar fields simply by considering asymptotically Anti de-Sitter, rather than asymptotically flat, boundary conditions is analyzed in a way that exhibits in a clear manner the differences between the two situations. It is shown that the trivial Sc... |
1205.1216 | Md. Rahman Atiqur | M. Atiqur Rahman, M. Ilias Hossain | Hawking Radiation of Schwarzschild-de Sitter Black Hole by
Hamilton-Jacobi method | 9 page. arXiv admin note: text overlap with arXiv:1205.1390 | Phys. Lett. B 712 (2012) 1-5 | 10.1016/j.physletb.2012.04.049 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the Hawking radiation of Schwarzschild-de Sitter (SdS) black
hole by massive particles tunneling method. We consider the spacetime
background to be dynamical, incorporate the self-gravitation effect of the
emitted particles and show that the tunneling rate is related to the change of
Bekenstein-Hawking... | [
{
"created": "Sun, 6 May 2012 13:19:34 GMT",
"version": "v1"
},
{
"created": "Sun, 13 May 2012 07:51:51 GMT",
"version": "v2"
}
] | 2012-06-01 | [
[
"Rahman",
"M. Atiqur",
""
],
[
"Hossain",
"M. Ilias",
""
]
] | We investigate the Hawking radiation of Schwarzschild-de Sitter (SdS) black hole by massive particles tunneling method. We consider the spacetime background to be dynamical, incorporate the self-gravitation effect of the emitted particles and show that the tunneling rate is related to the change of Bekenstein-Hawking e... |
0809.0811 | Jiliang Jing | Qiyuan Pan, Jiliang Jing | Hawking radiation, Entanglement and Teleportation in background of an
asymptotically flat static black hole | 17 pages, 3 figures, to be published in Physical Review D | Phys.Rev.D78:065015,2008 | 10.1103/PhysRevD.78.065015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effect of the Hawking temperature on the entanglement and teleportation
for the scalar field in a most general, static and asymptotically flat black
hole with spherical symmetry has been investigated. It is shown that the same
"initial entanglement" for the state parameter $\alpha$ and its "normalized
partners" $... | [
{
"created": "Thu, 4 Sep 2008 13:37:18 GMT",
"version": "v1"
},
{
"created": "Sat, 6 Sep 2008 01:10:09 GMT",
"version": "v2"
}
] | 2009-02-20 | [
[
"Pan",
"Qiyuan",
""
],
[
"Jing",
"Jiliang",
""
]
] | The effect of the Hawking temperature on the entanglement and teleportation for the scalar field in a most general, static and asymptotically flat black hole with spherical symmetry has been investigated. It is shown that the same "initial entanglement" for the state parameter $\alpha$ and its "normalized partners" $\s... |
gr-qc/0506069 | Claudio Dappiaggi | C. Dappiaggi (Pavia U.), V. Moretti (Trento U.), N. Pinamonti (Trento
U.) | Rigorous steps towards holography in asymptotically flat spacetimes | 62 pages, amslatex, xy package; revised section 2 and the
conclusions; corrected some typos; added some references; accepted for
pubblication on Rev. Math. Phys | Rev.Math.Phys. 18 (2006) 349-416 | 10.1142/S0129055X0600270X | FNT-T/2005-05, UTM 683 | gr-qc hep-th math-ph math.MP | null | Scalar QFT on the boundary $\Im^+$ at null infinity of a general
asymptotically flat 4D spacetime is constructed using the algebraic approach
based on Weyl algebra associated to a BMS-invariant symplectic form. The
constructed theory is invariant under a suitable unitary representation of the
BMS group with manifest ... | [
{
"created": "Sat, 11 Jun 2005 13:28:26 GMT",
"version": "v1"
},
{
"created": "Thu, 18 May 2006 19:42:36 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Dappiaggi",
"C.",
"",
"Pavia U."
],
[
"Moretti",
"V.",
"",
"Trento U."
],
[
"Pinamonti",
"N.",
"",
"Trento\n U."
]
] | Scalar QFT on the boundary $\Im^+$ at null infinity of a general asymptotically flat 4D spacetime is constructed using the algebraic approach based on Weyl algebra associated to a BMS-invariant symplectic form. The constructed theory is invariant under a suitable unitary representation of the BMS group with manifest me... |
1405.5085 | Eolo Di Casola | Eolo Di Casola and Stefano Liberati and Sebastiano Sonego | Between quantum and classical gravity: Is there a mesoscopic spacetime? | 7 pages, no figures | Found. Phys. 45 (2), 171 (2015) | 10.1007/s10701-014-9859-0 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Between the microscopic domain ruled by quantum gravity, and the macroscopic
scales described by general relativity, there might be an intermediate,
"mesoscopic" regime, where spacetime can still be approximately treated as a
differentiable pseudo-Riemannian manifold, with small corrections of quantum
gravitational o... | [
{
"created": "Tue, 20 May 2014 14:00:52 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Mar 2015 18:19:51 GMT",
"version": "v2"
}
] | 2015-03-19 | [
[
"Di Casola",
"Eolo",
""
],
[
"Liberati",
"Stefano",
""
],
[
"Sonego",
"Sebastiano",
""
]
] | Between the microscopic domain ruled by quantum gravity, and the macroscopic scales described by general relativity, there might be an intermediate, "mesoscopic" regime, where spacetime can still be approximately treated as a differentiable pseudo-Riemannian manifold, with small corrections of quantum gravitational ori... |
1902.03485 | Saken Toktarbay | Medeu Abishev, Farida Belissarova, Kuantay Boshkayev, Hernando
Quevedo, Saken Toktarbay, Aizhan Mansurova and Aray Muratkhan | Approximate perfect fluid solutions with quadrupole moment | null | International Journal of Modern Physics DVol. 30, No. 13, 2150096
(2021) | 10.1142/S0218271821500966 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We investigate the interior Einstein's equations in the case of a static,
axially symmetric, perfect fluid source. We present a particular line element
that is specially suitable for the investigation of this type of interior
gravitational fields. Assuming that the deviation from spherically symmetry is
small, we lin... | [
{
"created": "Sat, 9 Feb 2019 20:38:09 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Mar 2022 17:44:53 GMT",
"version": "v2"
}
] | 2022-03-29 | [
[
"Abishev",
"Medeu",
""
],
[
"Belissarova",
"Farida",
""
],
[
"Boshkayev",
"Kuantay",
""
],
[
"Quevedo",
"Hernando",
""
],
[
"Toktarbay",
"Saken",
""
],
[
"Mansurova",
"Aizhan",
""
],
[
"Muratkhan",
"Aray",
... | We investigate the interior Einstein's equations in the case of a static, axially symmetric, perfect fluid source. We present a particular line element that is specially suitable for the investigation of this type of interior gravitational fields. Assuming that the deviation from spherically symmetry is small, we linea... |
2102.12921 | Snehasish Bhattacharjee | Snehasish Bhattacharjee | BBN Constraints on $f(Q,T)$ Gravity | null | International Journal of Modern Physics A, 37, 06, 2250017 (2022) | 10.1142/S0217751X22500178 | null | gr-qc astro-ph.CO hep-th | http://creativecommons.org/licenses/by/4.0/ | $f(Q,T)$ gravity is a novel extension of the symmetric teleparallel gravity
where the Lagrangian $L$ is represented through an arbitrary function of the
nonmetricity $Q$ and the trace of the energy-momentum tensor $T$ \cite{fqt}. In
this work, we have constrained a widely used $f(Q,T)$ gravity model of the form
$f(Q,... | [
{
"created": "Thu, 25 Feb 2021 15:20:49 GMT",
"version": "v1"
}
] | 2022-03-23 | [
[
"Bhattacharjee",
"Snehasish",
""
]
] | $f(Q,T)$ gravity is a novel extension of the symmetric teleparallel gravity where the Lagrangian $L$ is represented through an arbitrary function of the nonmetricity $Q$ and the trace of the energy-momentum tensor $T$ \cite{fqt}. In this work, we have constrained a widely used $f(Q,T)$ gravity model of the form $f(Q,T)... |
0901.2750 | Parampreet Singh | Parampreet Singh | Are loop quantum cosmos never singular? | 20 pages, IOP style. Minor revision. Typos corrected and 1 figure
replaced. To appear in Classical & Quantum Gravity | Class.Quant.Grav.26:125005,2009 | 10.1088/0264-9381/26/12/125005 | PI-QG-100 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A unified treatment of all known types of singularities for flat, isotropic
and homogeneous spacetimes in the framework of loop quantum cosmology (LQC) is
presented. These include bangs, crunches and all future singularities. Using
effective spacetime description we perform a model independent general analysis
of the... | [
{
"created": "Mon, 19 Jan 2009 15:59:33 GMT",
"version": "v1"
},
{
"created": "Wed, 29 Apr 2009 15:58:39 GMT",
"version": "v2"
}
] | 2009-07-18 | [
[
"Singh",
"Parampreet",
""
]
] | A unified treatment of all known types of singularities for flat, isotropic and homogeneous spacetimes in the framework of loop quantum cosmology (LQC) is presented. These include bangs, crunches and all future singularities. Using effective spacetime description we perform a model independent general analysis of the p... |
0809.2453 | Dmitry I. Podolsky | Dmitry I. Podolsky | Dynamical renormalization group methods in theory of eternal inflation | 11 pages; invited mini-review for Grav.Cosm | Grav.Cosmol.15:69-74,2009 | 10.1134/S0202289309010174 | HIP-2008-29/TH | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dynamics of eternal inflation on the landscape admits description in terms of
the Martin-Siggia-Rose (MSR) effective field theory that is in one-to-one
correspondence with vacuum dynamics equations. On those sectors of the
landscape, where transport properties of the probability measure for eternal
inflation are impo... | [
{
"created": "Mon, 15 Sep 2008 08:28:16 GMT",
"version": "v1"
}
] | 2009-03-19 | [
[
"Podolsky",
"Dmitry I.",
""
]
] | Dynamics of eternal inflation on the landscape admits description in terms of the Martin-Siggia-Rose (MSR) effective field theory that is in one-to-one correspondence with vacuum dynamics equations. On those sectors of the landscape, where transport properties of the probability measure for eternal inflation are import... |
1801.05031 | Grigoris Panotopoulos | Ilidio Lopes and Grigoris Panotopoulos | Dark matter admixed strange quark stars in the Starobinsky model | 7 pages, two-column revtex, 6 figures, minor changes. arXiv admin
note: text overlap with arXiv:1801.03387 | null | 10.1103/PhysRevD.97.024030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The properties of dark matter admixed strange quark stars are investigated in
the Starobinsky model of modified gravity. For quark matter we assume the MIT
bag model, while self-interacting dark matter inside the star is modelled as a
Bose-Einstein condensate with a polytropic equation of state. We numerically
integr... | [
{
"created": "Fri, 12 Jan 2018 11:25:56 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Jan 2018 16:59:39 GMT",
"version": "v2"
}
] | 2018-02-14 | [
[
"Lopes",
"Ilidio",
""
],
[
"Panotopoulos",
"Grigoris",
""
]
] | The properties of dark matter admixed strange quark stars are investigated in the Starobinsky model of modified gravity. For quark matter we assume the MIT bag model, while self-interacting dark matter inside the star is modelled as a Bose-Einstein condensate with a polytropic equation of state. We numerically integrat... |
2402.11663 | Dimitris Moustos | Dimitris Moustos, Charis Anastopoulos | Gravity-mediated decoherence | 7 pages | Phys. Rev. D 110, 024022 (2024) | 10.1103/PhysRevD.110.024022 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A small quantum system within the gravitational field of a massive body will
be entangled with the quantum degrees of freedom of the latter. Hence, the
massive body acts as an environment, and it induces non-unitary dynamics,
noise, and decoherence to the quantum system. It is impossible to shield
systems on Earth fr... | [
{
"created": "Sun, 18 Feb 2024 17:44:35 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Jul 2024 16:40:21 GMT",
"version": "v2"
}
] | 2024-07-10 | [
[
"Moustos",
"Dimitris",
""
],
[
"Anastopoulos",
"Charis",
""
]
] | A small quantum system within the gravitational field of a massive body will be entangled with the quantum degrees of freedom of the latter. Hence, the massive body acts as an environment, and it induces non-unitary dynamics, noise, and decoherence to the quantum system. It is impossible to shield systems on Earth from... |
gr-qc/0402093 | Richard J. Drociuk | Richard J. Drociuk | On the Closed Form Solution for the Geodesics in SdS Space | null | null | null | null | gr-qc | null | The closed form solution for the geodesics of classical particles in SdS
space are obtained in terms of hyperelliptic modular functions and multiple
hypergeometric functions. The closed form solution for the five roots of the
fifth degree polynomial are found giving the branch places on the genus two
Riemann surface.... | [
{
"created": "Mon, 23 Feb 2004 05:07:05 GMT",
"version": "v1"
},
{
"created": "Sat, 19 Jun 2004 21:03:55 GMT",
"version": "v2"
},
{
"created": "Tue, 29 Jun 2004 20:50:56 GMT",
"version": "v3"
},
{
"created": "Thu, 15 Jul 2004 19:29:34 GMT",
"version": "v4"
}
] | 2007-05-23 | [
[
"Drociuk",
"Richard J.",
""
]
] | The closed form solution for the geodesics of classical particles in SdS space are obtained in terms of hyperelliptic modular functions and multiple hypergeometric functions. The closed form solution for the five roots of the fifth degree polynomial are found giving the branch places on the genus two Riemann surface. T... |
1908.06004 | Hang Yu | Kevin A. Kuns, Hang Yu, Yanbei Chen, Rana X Adhikari | Astrophysics and cosmology with a decihertz gravitational-wave detector:
TianGO | 20 pages (including references), 13 figures | Phys. Rev. D 102, 043001 (2020) | 10.1103/PhysRevD.102.043001 | null | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the astrophysical science case for a space-based, decihertz
gravitational-wave (GW) detector. We particularly highlight an ability to infer
a source's sky location, both when combined with a network of ground-based
detectors to form a long triangulation baseline, and by itself for the early
warning of merg... | [
{
"created": "Fri, 16 Aug 2019 15:12:40 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jun 2020 17:10:16 GMT",
"version": "v2"
}
] | 2020-08-12 | [
[
"Kuns",
"Kevin A.",
""
],
[
"Yu",
"Hang",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Adhikari",
"Rana X",
""
]
] | We present the astrophysical science case for a space-based, decihertz gravitational-wave (GW) detector. We particularly highlight an ability to infer a source's sky location, both when combined with a network of ground-based detectors to form a long triangulation baseline, and by itself for the early warning of merger... |
gr-qc/9605028 | Hagen Kleinert | H. Kleinert and A. Pelster | Autoparallels From a New Action Principle | Paper in src. Author Information under
http://www.physik.fu-berlin.de/~kleinert/institution.html Read paper directly
with Netscape under
http://www.physik.fu-berlin.de/~kleinert/kleiner_re243/preprint.html | Gen.Rel.Grav. 31 (1999) 1439 | 10.1023/A:1026701613987 | null | gr-qc | null | We present a simpler and more powerful version of the recently-discovered
action principle for the motion of a spinless point particle in spacetimes with
curvature and torsion. The surprising feature of the new principle is that an
action involving only the metric can produce an equation of motion with a
torsion forc... | [
{
"created": "Thu, 16 May 1996 07:57:03 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Oct 1999 08:08:36 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Kleinert",
"H.",
""
],
[
"Pelster",
"A.",
""
]
] | We present a simpler and more powerful version of the recently-discovered action principle for the motion of a spinless point particle in spacetimes with curvature and torsion. The surprising feature of the new principle is that an action involving only the metric can produce an equation of motion with a torsion force,... |
1208.6261 | Aharon Davidson | Aharon Davidson and Ben Yellin | Schwarzschild Mass Uncertainty | 5 two-column pages; v.2,3: Slight modifications (title and abstract
included) | Gen. Rel. Grav. 46, 1662 (2014) | 10.1007/s10714-013-1662-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Applying Dirac's procedure to $r$-dependent constrained systems, we derive a
reduced total Hamiltonian, resembling an upside down harmonic oscillator, which
generates the Schwarzschild solution in the mini super-spacetime. Associated
with the now $r$-dependent Schrodinger equation is a tower of localized
Guth-Pi-Bart... | [
{
"created": "Thu, 30 Aug 2012 18:45:43 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Sep 2012 05:48:58 GMT",
"version": "v2"
},
{
"created": "Fri, 27 Dec 2013 20:18:31 GMT",
"version": "v3"
}
] | 2014-02-03 | [
[
"Davidson",
"Aharon",
""
],
[
"Yellin",
"Ben",
""
]
] | Applying Dirac's procedure to $r$-dependent constrained systems, we derive a reduced total Hamiltonian, resembling an upside down harmonic oscillator, which generates the Schwarzschild solution in the mini super-spacetime. Associated with the now $r$-dependent Schrodinger equation is a tower of localized Guth-Pi-Barton... |
1804.03331 | Q. H. Liu | Q. H. Liu, Q. Li, T. G. Liu, X .Wang | Gravitational major-axis contraction of Mercury's elliptical orbit | 5 pages, major revision | null | 10.1142/S0217732319501591 | null | gr-qc physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The local curvature of the space produced by the Sun causes not only the
perihelion precession of Mercury's elliptical orbit, but also the variations of
the whole orbit, in comparison with those predicted by the Newtonian theory of
gravitation. Calculations show that the gravitational major-axis contraction of
the Me... | [
{
"created": "Tue, 10 Apr 2018 03:42:38 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Feb 2019 09:29:41 GMT",
"version": "v2"
}
] | 2019-07-17 | [
[
"Liu",
"Q. H.",
""
],
[
"Li",
"Q.",
""
],
[
"Liu",
"T. G.",
""
],
[
"Wang",
"X .",
""
]
] | The local curvature of the space produced by the Sun causes not only the perihelion precession of Mercury's elliptical orbit, but also the variations of the whole orbit, in comparison with those predicted by the Newtonian theory of gravitation. Calculations show that the gravitational major-axis contraction of the Merc... |
1805.07385 | Yuri Obukhov | Yuri N. Obukhov | Poincar\'e gauge gravity: An overview | 29 pages, Revtex, contribution to the Proceedings of the
International Conference "Geometric Foundations of Gravity" (Tartu, Estonia,
August 28-September 1, 2017) | null | 10.1142/S0219887818400054 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the basics and the current status of the Poincar\'e gauge theory of
gravity. The general dynamical scheme of Poincar\'e gauge gravity (PG) is
formulated, and its physical consequences are outlined. In particular, we
discuss exact solutions with and without torsion, highlight the cosmological
aspects, and co... | [
{
"created": "Fri, 18 May 2018 18:34:46 GMT",
"version": "v1"
}
] | 2018-12-05 | [
[
"Obukhov",
"Yuri N.",
""
]
] | We review the basics and the current status of the Poincar\'e gauge theory of gravity. The general dynamical scheme of Poincar\'e gauge gravity (PG) is formulated, and its physical consequences are outlined. In particular, we discuss exact solutions with and without torsion, highlight the cosmological aspects, and cons... |
2107.11660 | Mario Martinez Dr. | Alba Romero-Rodriguez, Mario Martinez, Oriol Pujol\`as, Mairi
Sakellariadou, Ville Vaskonen | Search for a scalar induced stochastic gravitational wave background in
the third LIGO-Virgo observing run | 5 pages, 2 tables, 2 figures | null | 10.1103/PhysRevLett.128.051301 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Formation of primordial black holes from inflationary fluctuations is
accompanied by a scalar induced gravitational wave background. We perform a
Bayesian search of such background in the data from Advanced LIGO and Virgo's
first, second and third observing runs, parametrizing the peak in the curvature
power spectrum... | [
{
"created": "Sat, 24 Jul 2021 17:43:20 GMT",
"version": "v1"
}
] | 2022-02-16 | [
[
"Romero-Rodriguez",
"Alba",
""
],
[
"Martinez",
"Mario",
""
],
[
"Pujolàs",
"Oriol",
""
],
[
"Sakellariadou",
"Mairi",
""
],
[
"Vaskonen",
"Ville",
""
]
] | Formation of primordial black holes from inflationary fluctuations is accompanied by a scalar induced gravitational wave background. We perform a Bayesian search of such background in the data from Advanced LIGO and Virgo's first, second and third observing runs, parametrizing the peak in the curvature power spectrum b... |
1207.4500 | Norman G\"urlebeck | Norman G\"urlebeck | Source integrals for multipole moments in static and axially symmetric
spacetimes | 16 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we derive source integrals for multipole moments in axially
symmetric and static spacetimes. The multipole moments can be read off the
asymptotics of the metric close to spatial infinity in a hypersurface, which is
orthogonal to the timelike Killing vector. Whereas for the evaluation of the
source in... | [
{
"created": "Wed, 18 Jul 2012 20:37:14 GMT",
"version": "v1"
}
] | 2012-07-20 | [
[
"Gürlebeck",
"Norman",
""
]
] | In this article, we derive source integrals for multipole moments in axially symmetric and static spacetimes. The multipole moments can be read off the asymptotics of the metric close to spatial infinity in a hypersurface, which is orthogonal to the timelike Killing vector. Whereas for the evaluation of the source inte... |
2307.05576 | Athira Sasidharan | Athira Sasidharan, Titus K Mathew | Constraining the bulk viscous coefficients in a viscous universe with
cosmological constant | 12 pages 5 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider dissipative effects in $\Lambda$CDM model, i.e., we
consider a universe with cosmological constant having viscous matter. We assume
the most general form for bulk viscous coefficient,
$\zeta=\zeta_{0}+\zeta_{1}\frac{\dot{a}}{a}+\zeta_{2}\frac{\ddot{a}}{\dot{a}}$
and obtained various constrai... | [
{
"created": "Mon, 10 Jul 2023 12:19:06 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Aug 2024 12:52:44 GMT",
"version": "v2"
}
] | 2024-08-14 | [
[
"Sasidharan",
"Athira",
""
],
[
"Mathew",
"Titus K",
""
]
] | In this paper we consider dissipative effects in $\Lambda$CDM model, i.e., we consider a universe with cosmological constant having viscous matter. We assume the most general form for bulk viscous coefficient, $\zeta=\zeta_{0}+\zeta_{1}\frac{\dot{a}}{a}+\zeta_{2}\frac{\ddot{a}}{\dot{a}}$ and obtained various constrains... |
gr-qc/0004067 | Lucan | Miroslav Sukenik, Jozef Sima and Julius Vanko | Compatibility of the expansive nondecelerative universe model with the
Newton gravitational theory and the general theory of relativity | 2 pages, LaTex | null | null | SS-00-03 | gr-qc | null | Applying the Vaidya metrics in the model of Expansive Nondecelerative
Universe (ENU) leads to compatibility of the ENU model both with the classic
Newton gravitational theory and the general theory of relativity in weak fields
| [
{
"created": "Thu, 20 Apr 2000 07:58:48 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sukenik",
"Miroslav",
""
],
[
"Sima",
"Jozef",
""
],
[
"Vanko",
"Julius",
""
]
] | Applying the Vaidya metrics in the model of Expansive Nondecelerative Universe (ENU) leads to compatibility of the ENU model both with the classic Newton gravitational theory and the general theory of relativity in weak fields |
1703.05783 | Slava G. Turyshev | Slava G. Turyshev | Wave-theoretical description of the solar gravitational lens | 5 pages | Phys. Rev. D 95, 084041 (2017) | 10.1103/PhysRevD.95.084041 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the propagation of electromagnetic (EM) waves in the
post-Newtonian approximation of the general theory of relativity. We consider
diffraction of EM waves in the static gravitational field of a massive
monopole. We develop a wave-theoretical description of the solar gravitational
lens (SGL) and show that w... | [
{
"created": "Thu, 16 Mar 2017 18:16:00 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Apr 2017 17:00:21 GMT",
"version": "v2"
}
] | 2017-04-25 | [
[
"Turyshev",
"Slava G.",
""
]
] | We discuss the propagation of electromagnetic (EM) waves in the post-Newtonian approximation of the general theory of relativity. We consider diffraction of EM waves in the static gravitational field of a massive monopole. We develop a wave-theoretical description of the solar gravitational lens (SGL) and show that wit... |
1405.0729 | Abdul Jawad | Abdul Jawad, Antonio Pasqua and Surajit Chattopadhyay | Holographic reconstruction of $f(G)$ Gravity for scale factors
pertaining to Emergent, Logamediate and Intermediate scenarios | 12 pages, 9 figures | Eur. Phys. J. Plus 128(2013)156 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we reconstruct the holographic dark energy in the framework of
$f(G)$ modified theory of gravity, where $G$ is Gauss-Bonnet invariant. In this
context, we choose the infrared cut-off as Granda-Oliveros cut-off which is
proportional to the Hubble parameter $H$ and its first derivative with respect
to th... | [
{
"created": "Sun, 4 May 2014 18:43:27 GMT",
"version": "v1"
}
] | 2014-05-06 | [
[
"Jawad",
"Abdul",
""
],
[
"Pasqua",
"Antonio",
""
],
[
"Chattopadhyay",
"Surajit",
""
]
] | In this paper, we reconstruct the holographic dark energy in the framework of $f(G)$ modified theory of gravity, where $G$ is Gauss-Bonnet invariant. In this context, we choose the infrared cut-off as Granda-Oliveros cut-off which is proportional to the Hubble parameter $H$ and its first derivative with respect to the ... |
gr-qc/0611021 | Jean-Philippe Bruneton | Jean-Philippe Bruneton | The two-body problem: analytical results in a toy-model of relativistic
gravity | 7 Figures, To appear in the proceedings of Albert Einstein's Century
International Conference, Paris, France, 18-22 July | null | 10.1063/1.2399624 | null | gr-qc | null | The two body problem in a scalar theory of gravity is investigated. We focus
on the closest theory to General Relativity (GR), namely Nordstr\"om's theory
of gravity (1913). The gravitational field can be exactly solved for any
configuration of point-particles. We then derive the exact equations of motion
of two insp... | [
{
"created": "Fri, 3 Nov 2006 18:34:19 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Bruneton",
"Jean-Philippe",
""
]
] | The two body problem in a scalar theory of gravity is investigated. We focus on the closest theory to General Relativity (GR), namely Nordstr\"om's theory of gravity (1913). The gravitational field can be exactly solved for any configuration of point-particles. We then derive the exact equations of motion of two inspir... |
1703.07921 | Rashmi Uniyal | Ravi Shankar Kuniyal, Rashmi Uniyal, Anindya Biswas, Hemwati Nandan
and K. D. Purohit | Null Geodesics and Red-Blue Shifts of Photons Emitted from Geodesic
Particles Around a Non-Commutative Black Hole Spacetime | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the geodesic motion of massless test particles in the
background of a noncommutative geometry inspired Schwarzschild black hole. The
behaviour of effective potential is analysed in the equatorial plane and the
possible motions of massless particles (i.e. photons) for different values of
impact paramete... | [
{
"created": "Thu, 23 Mar 2017 03:50:47 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Mar 2017 08:28:56 GMT",
"version": "v2"
}
] | 2017-03-28 | [
[
"Kuniyal",
"Ravi Shankar",
""
],
[
"Uniyal",
"Rashmi",
""
],
[
"Biswas",
"Anindya",
""
],
[
"Nandan",
"Hemwati",
""
],
[
"Purohit",
"K. D.",
""
]
] | We investigate the geodesic motion of massless test particles in the background of a noncommutative geometry inspired Schwarzschild black hole. The behaviour of effective potential is analysed in the equatorial plane and the possible motions of massless particles (i.e. photons) for different values of impact parameter ... |
gr-qc/0505121 | Saulo Carneiro | Saulo Carneiro | The cosmic coincidence in Brans-Dicke cosmologies | This essay received an "honorable mention" in the 2005 Essay
Competition of the Gravity Research Foundation | Int.J.Mod.Phys.D14:2201-2206,2005 | 10.1142/S021827180500784X | null | gr-qc astro-ph | null | Among the suggested solutions to the cosmological constant problem, we find
the idea of a dynamic vacuum, with an energy density decaying with the universe
expansion. We investigate the possibility of a variation in the gravitational
constant as well, induced, at the cosmological scale, by the vacuum decay. We
consid... | [
{
"created": "Mon, 23 May 2005 21:41:51 GMT",
"version": "v1"
}
] | 2011-08-17 | [
[
"Carneiro",
"Saulo",
""
]
] | Among the suggested solutions to the cosmological constant problem, we find the idea of a dynamic vacuum, with an energy density decaying with the universe expansion. We investigate the possibility of a variation in the gravitational constant as well, induced, at the cosmological scale, by the vacuum decay. We consider... |
1309.2581 | Curt Cutler | Curt Cutler, Sarah Burke-Spolaor, Michele Vallisneri, Joseph Lazio and
Walid Majid | The Gravitational-Wave Discovery Space of Pulsar Timing Arrays | 12 pages, 1 figure, submitted to PRD | Phys. Rev. D 89, 042003 (2014) | 10.1103/PhysRevD.89.042003 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent years have seen a burgeoning interest in using pulsar timing arrays
(PTAs) as gravitational-wave (GW) detectors. To date, that interest has focused
mainly on three particularly promising source types: supermassive--black-hole
binaries, cosmic strings, and the stochastic background from early-Universe
phase tra... | [
{
"created": "Tue, 10 Sep 2013 17:22:32 GMT",
"version": "v1"
}
] | 2014-02-26 | [
[
"Cutler",
"Curt",
""
],
[
"Burke-Spolaor",
"Sarah",
""
],
[
"Vallisneri",
"Michele",
""
],
[
"Lazio",
"Joseph",
""
],
[
"Majid",
"Walid",
""
]
] | Recent years have seen a burgeoning interest in using pulsar timing arrays (PTAs) as gravitational-wave (GW) detectors. To date, that interest has focused mainly on three particularly promising source types: supermassive--black-hole binaries, cosmic strings, and the stochastic background from early-Universe phase trans... |
1507.03993 | Sam Dolan Dr | Lu\'is C. B. Crispino, Sam R. Dolan, Atsushi Higuchi and Ednilton S.
de Oliveira | Scattering from charged black holes and supergravity | 5 pages, 1 figure | Phys. Rev. D 92, 084056 (2015) | 10.1103/PhysRevD.92.084056 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The scattering cross sections of the unpolarized electromagnetic and
gravitational waves are shown to be equal for the extreme Reissner-Nordstr\"om
black hole using $N=2$ supergravity. The conversion cross sections between the
unpolarized electromagnetic and gravitational waves are also shown to coincide.
The gravita... | [
{
"created": "Tue, 14 Jul 2015 20:00:30 GMT",
"version": "v1"
}
] | 2015-11-04 | [
[
"Crispino",
"Luís C. B.",
""
],
[
"Dolan",
"Sam R.",
""
],
[
"Higuchi",
"Atsushi",
""
],
[
"de Oliveira",
"Ednilton S.",
""
]
] | The scattering cross sections of the unpolarized electromagnetic and gravitational waves are shown to be equal for the extreme Reissner-Nordstr\"om black hole using $N=2$ supergravity. The conversion cross sections between the unpolarized electromagnetic and gravitational waves are also shown to coincide. The gravitati... |
gr-qc/9909094 | null | Pedro F. Gonzalez-Diaz (IMAFF, CSIC, Madrid) | Generalized De Sitter Space | 10 pages, RevTex, to appear in Phys. Rev. D | Phys.Rev. D61 (2000) 024019 | 10.1103/PhysRevD.61.024019 | IMAFF-RCA-99-05 | gr-qc | null | This paper deals with some two-parameter solutions to the spherically
symmetric, vacuum Einstein equations which, we argue, are more general than de
Sitter solution. The global structure of one such spacetimes and its extension
to the multiply connected case have also been investigated. By using a
six-dimensional Min... | [
{
"created": "Thu, 30 Sep 1999 17:14:30 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Gonzalez-Diaz",
"Pedro F.",
"",
"IMAFF, CSIC, Madrid"
]
] | This paper deals with some two-parameter solutions to the spherically symmetric, vacuum Einstein equations which, we argue, are more general than de Sitter solution. The global structure of one such spacetimes and its extension to the multiply connected case have also been investigated. By using a six-dimensional Minko... |
1101.3655 | Tiberiu Harko | T. Harko | Evolution of cosmological perturbations in Bose-Einstein condensate dark
matter | 11 pages, 4 figures, accepted for publication in MNRAS | Mon.Not.Roy.Astron.Soc.413: 3095-3104,2011 | 10.1111/j.1365-2966.2011.18386.x | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the global cosmological evolution and the evolution of the
density contrast in the Bose-Einstein condensate dark matter model, in the
framework of a Post-Newtonian cosmological approach. In the Bose-Einstein
model, dark matter can be described as a non-relativistic, Newtonian
gravitational condensate, who... | [
{
"created": "Wed, 19 Jan 2011 10:36:11 GMT",
"version": "v1"
},
{
"created": "Thu, 10 Feb 2011 04:20:49 GMT",
"version": "v2"
}
] | 2015-05-27 | [
[
"Harko",
"T.",
""
]
] | We consider the global cosmological evolution and the evolution of the density contrast in the Bose-Einstein condensate dark matter model, in the framework of a Post-Newtonian cosmological approach. In the Bose-Einstein model, dark matter can be described as a non-relativistic, Newtonian gravitational condensate, whose... |
1312.5646 | Jeff Hnybida | Bianca Dittrich and Jeff Hnybida | Ising Model from Intertwiners | null | null | null | null | gr-qc cond-mat.stat-mech hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spin networks appear in a number of areas, for instance in lattice gauge
theories and in quantum gravity. They describe the contraction of intertwiners
according to the underlying network. We show that a certain generating function
of intertwiner contractions leads to the partition function of the 2d Ising
model. Thi... | [
{
"created": "Thu, 19 Dec 2013 17:13:11 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Dec 2013 20:14:15 GMT",
"version": "v2"
},
{
"created": "Mon, 23 Nov 2015 15:58:51 GMT",
"version": "v3"
}
] | 2015-11-24 | [
[
"Dittrich",
"Bianca",
""
],
[
"Hnybida",
"Jeff",
""
]
] | Spin networks appear in a number of areas, for instance in lattice gauge theories and in quantum gravity. They describe the contraction of intertwiners according to the underlying network. We show that a certain generating function of intertwiner contractions leads to the partition function of the 2d Ising model. This ... |
1712.02778 | Mikjel Thorsrud | Mikjel Thorsrud | Balancing Anisotropic Curvature with Gauge Fields in a Class of
Shear-Free Cosmological Models | 33 pages, see pages 4-7 for summary of main results. V3: matches
published version, cites V2 for more details and discussion | Class. Quantum Grav. 35 (2018) 095011 | 10.1088/1361-6382/aab65a | null | gr-qc astro-ph.CO hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a complete list of general relativistic shear-free solutions in a
class of anisotropic, spatially homogeneous and orthogonal cosmological models
containing a collection of $n$ independent $p$-form gauge fields, where
$p\in\{0,1,2,3\}$, in addition to standard $\Lambda$CDM matter fields modelled
as perfect ... | [
{
"created": "Thu, 7 Dec 2017 18:53:34 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Mar 2018 21:22:52 GMT",
"version": "v2"
},
{
"created": "Sun, 8 Apr 2018 16:24:49 GMT",
"version": "v3"
}
] | 2018-04-10 | [
[
"Thorsrud",
"Mikjel",
""
]
] | We present a complete list of general relativistic shear-free solutions in a class of anisotropic, spatially homogeneous and orthogonal cosmological models containing a collection of $n$ independent $p$-form gauge fields, where $p\in\{0,1,2,3\}$, in addition to standard $\Lambda$CDM matter fields modelled as perfect fl... |
1312.1011 | Lap-Ming Lin | Y.-H. Sham, L.-M. Lin, P. T. Leung | Testing universal relations of neutron stars with a nonlinear
matter-gravity coupling theory | Minor changes to match the published version | Astrophys.J.781,66,2014 | 10.1088/0004-637X/781/2/66 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Due to our ignorance of the equation of state (EOS) beyond nuclear density,
there is still no unique theoretical model for neutron stars (NSs). It is
therefore surprising that universal EOS-independent relations connecting
different physical quantities of neutron stars can exist. Lau et al. [ApJ, 714,
1234 (2010)] fo... | [
{
"created": "Wed, 4 Dec 2013 03:20:37 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Jan 2014 07:56:43 GMT",
"version": "v2"
}
] | 2015-06-18 | [
[
"Sham",
"Y. -H.",
""
],
[
"Lin",
"L. -M.",
""
],
[
"Leung",
"P. T.",
""
]
] | Due to our ignorance of the equation of state (EOS) beyond nuclear density, there is still no unique theoretical model for neutron stars (NSs). It is therefore surprising that universal EOS-independent relations connecting different physical quantities of neutron stars can exist. Lau et al. [ApJ, 714, 1234 (2010)] foun... |
1303.6402 | Hyeong-Chan Kim | Hyeong-Chan Kim | A new variable in scalar cosmology with exponential potential | 7pages, 1figure | J.Korean Phys.Soc. 63 (2013) 1675-1680 | 10.3938/jkps.63.1675 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new way describing the solution of the Einstein-scalar field
theory with exponential potential $V\propto e^{\sqrt{6}\beta \phi/M_{Pl}}$ in
spatially flat Friedmann-Robertson-Walker space-time. We introduced a new time
variable, $L$, which may vary in $[-1,1]$. The new time represents the state of
the uni... | [
{
"created": "Tue, 26 Mar 2013 08:01:56 GMT",
"version": "v1"
}
] | 2013-12-10 | [
[
"Kim",
"Hyeong-Chan",
""
]
] | We present a new way describing the solution of the Einstein-scalar field theory with exponential potential $V\propto e^{\sqrt{6}\beta \phi/M_{Pl}}$ in spatially flat Friedmann-Robertson-Walker space-time. We introduced a new time variable, $L$, which may vary in $[-1,1]$. The new time represents the state of the unive... |
1905.12433 | Mohit Sharma | Mohit Kumar Sharma, Kairat Myrzakulov, Mudhahir Al Ajmi | Curvaton: Perturbations and reheating | Accepted for publication in MPLA | null | 10.1142/S0217732320502594 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study chaotic and runaway potential inflationary models in the curvaton
scenario. In particular, we address the issue of large tensor-to-scalar ratio
and red-tilted spectrum in chaotic models and reheating in runaway model in the
light of latest Planck results. We show that curvaton can easily circumvent
these pro... | [
{
"created": "Wed, 29 May 2019 13:31:56 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Jun 2019 16:09:17 GMT",
"version": "v2"
},
{
"created": "Wed, 26 Aug 2020 06:36:16 GMT",
"version": "v3"
}
] | 2020-08-27 | [
[
"Sharma",
"Mohit Kumar",
""
],
[
"Myrzakulov",
"Kairat",
""
],
[
"Ajmi",
"Mudhahir Al",
""
]
] | We study chaotic and runaway potential inflationary models in the curvaton scenario. In particular, we address the issue of large tensor-to-scalar ratio and red-tilted spectrum in chaotic models and reheating in runaway model in the light of latest Planck results. We show that curvaton can easily circumvent these probl... |
1509.02903 | Ott Vilson | Piret Kuusk, Laur Jarv and Ott Vilson | Invariant quantities in the multiscalar-tensor theories of gravitation | 11 pages, references added and updated, a few typos corrected | Int. J. Mod. Phys. A 31, 1641003 (2016) | 10.1142/S0217751X16410037 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The aim of the current paper is to study the multiscalar-tensor theories of
gravity without derivative couplings. We construct a few basic objects that are
invariant under a Weyl rescaling of the metric and transform covariantly when
the scalar fields are redefined. We introduce rules to construct further such
object... | [
{
"created": "Wed, 9 Sep 2015 19:43:53 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Jan 2016 14:34:25 GMT",
"version": "v2"
}
] | 2016-01-25 | [
[
"Kuusk",
"Piret",
""
],
[
"Jarv",
"Laur",
""
],
[
"Vilson",
"Ott",
""
]
] | The aim of the current paper is to study the multiscalar-tensor theories of gravity without derivative couplings. We construct a few basic objects that are invariant under a Weyl rescaling of the metric and transform covariantly when the scalar fields are redefined. We introduce rules to construct further such objects ... |
2203.16399 | Folkert Kuipers | Folkert Kuipers | Spacetime Stochasticity and Second Order Geometry | 6 pages; contribution to the proceedings of the 14th international
workshop on Lie Theory and its Applications in Physics (LT-14) | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the Schwartz-Meyer second order geometry framework and its
relevance to theories of quantum gravity that incorporate a notion of spacetime
stochasticity or quantum foam. We illustrate the framework in the context of
Nelson's stochastic quantization.
| [
{
"created": "Wed, 30 Mar 2022 15:27:49 GMT",
"version": "v1"
}
] | 2022-03-31 | [
[
"Kuipers",
"Folkert",
""
]
] | We discuss the Schwartz-Meyer second order geometry framework and its relevance to theories of quantum gravity that incorporate a notion of spacetime stochasticity or quantum foam. We illustrate the framework in the context of Nelson's stochastic quantization. |
2003.03742 | Sergey Paston | A.D. Kapustin, M.V. Ioffe, S.A. Paston | Explicit isometric embeddings of collapsing dust ball | LaTeX, 18 pages | Class. Quantum Grav. 37 (2020) 075019 | 10.1088/1361-6382/ab74f8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The work is devoted to the search for explicit isometric embeddings of a
metric corresponding to the collapse of spherically symmetric matter with the
formation of a black hole. Two approaches are considered: in the first, the
embedding is constructed for the whole manifold at once; in the second, the
idea of a junct... | [
{
"created": "Sun, 8 Mar 2020 08:24:25 GMT",
"version": "v1"
}
] | 2020-03-10 | [
[
"Kapustin",
"A. D.",
""
],
[
"Ioffe",
"M. V.",
""
],
[
"Paston",
"S. A.",
""
]
] | The work is devoted to the search for explicit isometric embeddings of a metric corresponding to the collapse of spherically symmetric matter with the formation of a black hole. Two approaches are considered: in the first, the embedding is constructed for the whole manifold at once; in the second, the idea of a junctio... |
1906.02498 | Pawan Joshi | pawan Joshi, Sukanta Panda | Higher Derivative Theory For Curvature Term Coupling With Scalar Field | 3 pages, No figure, Presented at XXIII DAE-BRNS High Energy Physics
Symposium | Springer Proc. Phys. 2021 | 10.1007/978-981-33-4408-2_128 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Higher order derivative theories, generally suffer from instabilities, known
as Ostrogradsky instabilities. This issue can be resolved by removing any
existing degeneracy present in such theories. We consider a model involving at
most second order derivatives of scalar field non-minimally coupled to
curvature terms. ... | [
{
"created": "Thu, 6 Jun 2019 09:46:00 GMT",
"version": "v1"
}
] | 2022-03-21 | [
[
"Joshi",
"pawan",
""
],
[
"Panda",
"Sukanta",
""
]
] | Higher order derivative theories, generally suffer from instabilities, known as Ostrogradsky instabilities. This issue can be resolved by removing any existing degeneracy present in such theories. We consider a model involving at most second order derivatives of scalar field non-minimally coupled to curvature terms. He... |
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