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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2303.17552 | Rodrigo Bufalo | D. Jackson and R. Bufalo | Structure Formation in Non-local Bouncing Models | 19 pages, 4 figures; | null | 10.1088/1475-7516/2023/05/010 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this study, we investigate the growth of structures within the
Deser-Woodard nonlocal theory and extend it to various bouncing cosmology
scenarios. Our findings show that the observable structure growth rate,
$f\sigma_8$, in a vacuum-dominated universe is finite within the redshift range
of $0<z<2$, contrary to pr... | [
{
"created": "Thu, 30 Mar 2023 17:20:56 GMT",
"version": "v1"
}
] | 2023-05-10 | [
[
"Jackson",
"D.",
""
],
[
"Bufalo",
"R.",
""
]
] | In this study, we investigate the growth of structures within the Deser-Woodard nonlocal theory and extend it to various bouncing cosmology scenarios. Our findings show that the observable structure growth rate, $f\sigma_8$, in a vacuum-dominated universe is finite within the redshift range of $0<z<2$, contrary to prev... |
1903.05000 | Sachin Pandey | Sachin Pandey | Anisotropic n-dimensional quantum cosmological model with fluid | null | null | 10.1140/epjc/s10052-019-7021-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work, we discuss the Wheeler-DeWitt quantization scheme for an
n-dimensional anisotropic cosmological model with a perfect fluid in presence
of a massless scalar field. We identify the time parameter using the
generalization of Schutz formalism and find the wavepacket of the universe
following standard... | [
{
"created": "Tue, 12 Mar 2019 15:33:51 GMT",
"version": "v1"
}
] | 2019-06-26 | [
[
"Pandey",
"Sachin",
""
]
] | In the present work, we discuss the Wheeler-DeWitt quantization scheme for an n-dimensional anisotropic cosmological model with a perfect fluid in presence of a massless scalar field. We identify the time parameter using the generalization of Schutz formalism and find the wavepacket of the universe following standard W... |
2406.18659 | Alexandre Landry | Alexandre Landry | Kantowski-Sachs spherically symmetric solutions in teleparallel $F(T)$
gravity | 41 pages, no figure | Symmetry 2024, 16(8), 953 | 10.3390/sym16080953 | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | In this paper, we investigate time-dependent Kantowski-Sachs spherically
symmetric teleparallel $F(T)$ gravity in vacuum and in a perfect isotropic
fluid. We begin by finding the field equations and solve for new teleparallel
$F(T)$ solutions. With a power-law ansatz for the coframe functions, we find
new non-trivial... | [
{
"created": "Wed, 26 Jun 2024 18:00:43 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jul 2024 11:18:23 GMT",
"version": "v2"
}
] | 2024-07-26 | [
[
"Landry",
"Alexandre",
""
]
] | In this paper, we investigate time-dependent Kantowski-Sachs spherically symmetric teleparallel $F(T)$ gravity in vacuum and in a perfect isotropic fluid. We begin by finding the field equations and solve for new teleparallel $F(T)$ solutions. With a power-law ansatz for the coframe functions, we find new non-trivial t... |
gr-qc/0409079 | Jan Harms | J. Harms, R. Schnabel, K. Danzmann | The finite mass beamsplitter in high power interferometers | 10 pages, 7 figures | Phys.Rev. D70 (2004) 102001 | 10.1103/PhysRevD.70.102001 | null | gr-qc | null | The beamplitter in high-power interferometers is subject to significant
radiation-pressure fluctuations. As a consequence, the phase relations which
appear in the beamsplitter coupling equations oscillate and phase modulation
fields are generated which add to the reflected fields. In this paper, the
transfer function... | [
{
"created": "Tue, 21 Sep 2004 07:38:51 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Harms",
"J.",
""
],
[
"Schnabel",
"R.",
""
],
[
"Danzmann",
"K.",
""
]
] | The beamplitter in high-power interferometers is subject to significant radiation-pressure fluctuations. As a consequence, the phase relations which appear in the beamsplitter coupling equations oscillate and phase modulation fields are generated which add to the reflected fields. In this paper, the transfer function o... |
2008.06195 | Riccardo Sturani | Gabriel Luz Almeida, Stefano Foffa and Riccardo Sturani | Classical Gravitational Self-Energy from Double Copy | 20 pages, 2 figures | JHEP 11 (2020) 165 | 10.1007/JHEP11(2020)165 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply the classical double copy to the calculation of self-energy of
composite systems with multipolar coupling to gravitational field, obtaining
next-to-leading order results in the gravitational coupling $G_N$ by
generalizing color to kinematics replacement rules known in literature. When
applied to the multipol... | [
{
"created": "Fri, 14 Aug 2020 05:31:07 GMT",
"version": "v1"
}
] | 2020-12-14 | [
[
"Almeida",
"Gabriel Luz",
""
],
[
"Foffa",
"Stefano",
""
],
[
"Sturani",
"Riccardo",
""
]
] | We apply the classical double copy to the calculation of self-energy of composite systems with multipolar coupling to gravitational field, obtaining next-to-leading order results in the gravitational coupling $G_N$ by generalizing color to kinematics replacement rules known in literature. When applied to the multipolar... |
gr-qc/0509120 | Lucien Hardy | Lucien Hardy | Probability Theories with Dynamic Causal Structure: A New Framework for
Quantum Gravity | 68 pages, 9 figures | null | null | null | gr-qc quant-ph | null | Quantum theory is a probabilistic theory with fixed causal structure. General
relativity is a deterministic theory but where the causal structure is dynamic.
It is reasonable to expect that quantum gravity will be a probabilistic theory
with dynamic causal structure. The purpose of this paper is to present a
framewor... | [
{
"created": "Thu, 29 Sep 2005 18:25:51 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Hardy",
"Lucien",
""
]
] | Quantum theory is a probabilistic theory with fixed causal structure. General relativity is a deterministic theory but where the causal structure is dynamic. It is reasonable to expect that quantum gravity will be a probabilistic theory with dynamic causal structure. The purpose of this paper is to present a framework ... |
2404.17075 | Philip Broadbridge | Philip Broadbridge, Sarah Becirevic and David Hoxley | Non-Particulate Quantum States of the Electromagnetic Field in Expanding
Space-Time | null | null | null | null | gr-qc math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | A quantum field has been coupled to a space-time with accelerating expansion.
Dynamical modes are destabilised successively at shorter material wavelengths
as they metamorphose from oscillators to repellers. Due to degeneracy of energy
levels, the number of unstable modes increases at an accelerating rate,
sufficient... | [
{
"created": "Thu, 25 Apr 2024 22:55:48 GMT",
"version": "v1"
}
] | 2024-04-29 | [
[
"Broadbridge",
"Philip",
""
],
[
"Becirevic",
"Sarah",
""
],
[
"Hoxley",
"David",
""
]
] | A quantum field has been coupled to a space-time with accelerating expansion. Dynamical modes are destabilised successively at shorter material wavelengths as they metamorphose from oscillators to repellers. Due to degeneracy of energy levels, the number of unstable modes increases at an accelerating rate, sufficient t... |
2201.00679 | Indrani Banerjee | Indrani Banerjee | Deciphering signatures of Bardeen black holes from the observed
quasi-periodic oscillations | 23 pages, 2 figures | null | 10.1088/1475-7516/2022/05/020 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Quasi-periodic oscillations (QPOs) observed in the power spectrum of black
holes are unique observational probes to the background spacetime since they
can be directly related to the timescales associated with the motion of matter
orbiting in the vicinity of the black hole horizon. In this regard, the high
frequency ... | [
{
"created": "Mon, 3 Jan 2022 14:41:44 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Sep 2022 14:46:04 GMT",
"version": "v2"
}
] | 2022-09-27 | [
[
"Banerjee",
"Indrani",
""
]
] | Quasi-periodic oscillations (QPOs) observed in the power spectrum of black holes are unique observational probes to the background spacetime since they can be directly related to the timescales associated with the motion of matter orbiting in the vicinity of the black hole horizon. In this regard, the high frequency QP... |
2006.13435 | Hideyoshi Arakida | Hideyoshi Arakida | The optical geometry definition of the total deflection angle of a light
ray in curved spacetime | 25 pages, 5 figures. Accepted for publication in Journal of Cosmology
and Astroparticle Physics | Journal of Cosmology and Astroparticle Physics, 2021, id.028 | 10.1088/1475-7516/2021/08/028 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Assuming a static and spherically symmetric spacetime, we propose a novel
concept of the total deflection angle of a light ray. The concept is defined by
the difference between the sum of internal angles of two triangles; one of the
triangles lies on curved spacetime distorted by a gravitating body and the
other on i... | [
{
"created": "Wed, 24 Jun 2020 02:43:58 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Jan 2021 05:56:38 GMT",
"version": "v2"
},
{
"created": "Wed, 28 Apr 2021 02:40:35 GMT",
"version": "v3"
},
{
"created": "Mon, 12 Jul 2021 00:21:26 GMT",
"version": "v4"
}
] | 2021-08-18 | [
[
"Arakida",
"Hideyoshi",
""
]
] | Assuming a static and spherically symmetric spacetime, we propose a novel concept of the total deflection angle of a light ray. The concept is defined by the difference between the sum of internal angles of two triangles; one of the triangles lies on curved spacetime distorted by a gravitating body and the other on its... |
gr-qc/9404013 | James Hartle | Murray Gell-Mann and James B. Hartle (Santa Fe Institute, Los Alamos,
and University of New Mexico) | Equivalent Sets of Histories and Multiple Quasiclassical Realms | 26pages, uses REVTEX 3.0 | null | null | UCSBTH-94-09 | gr-qc hep-th | null | We consider notions of physical equivalence of sets of histories in the
quantum mechanics of a closed system. We show first how the same set of
histories can be relabeled in various ways, including the use of the Heisenberg
equations of motion and of passive transformations of field variables. In the
the usual approx... | [
{
"created": "Fri, 8 Apr 1994 14:33:00 GMT",
"version": "v1"
},
{
"created": "Tue, 31 Oct 1995 23:07:53 GMT",
"version": "v2"
},
{
"created": "Sun, 5 May 1996 21:12:06 GMT",
"version": "v3"
}
] | 2008-02-03 | [
[
"Gell-Mann",
"Murray",
"",
"Santa Fe Institute, Los Alamos,\n and University of New Mexico"
],
[
"Hartle",
"James B.",
"",
"Santa Fe Institute, Los Alamos,\n and University of New Mexico"
]
] | We consider notions of physical equivalence of sets of histories in the quantum mechanics of a closed system. We show first how the same set of histories can be relabeled in various ways, including the use of the Heisenberg equations of motion and of passive transformations of field variables. In the the usual approxim... |
gr-qc/9610018 | Haret Rosu | H.C. Rosu, J. Socorro | Double Darboux method for the Taub continuum | 10 pages, LaTex, 4 figs, first 3 published | Nuovo Cimento B 113 (May 1998) 677-682 | null | null | gr-qc | null | The strictly isospectral double Darboux method is applied to the quantum Taub
model in order to generate a one-parameter family of strictly isospectral
potentials for this case. The family we build is based on a scattering
Wheeler-DeWitt solution first discussed by Ryan and collaborators that we
slightly modified acc... | [
{
"created": "Fri, 11 Oct 1996 01:01:00 GMT",
"version": "v1"
},
{
"created": "Mon, 18 May 1998 18:26:43 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Rosu",
"H. C.",
""
],
[
"Socorro",
"J.",
""
]
] | The strictly isospectral double Darboux method is applied to the quantum Taub model in order to generate a one-parameter family of strictly isospectral potentials for this case. The family we build is based on a scattering Wheeler-DeWitt solution first discussed by Ryan and collaborators that we slightly modified accor... |
1201.5685 | Ricardo J. Alonso-Blanco | Ricardo J. Alonso-Blanco | Klein-Gordon equation from Maxwell-Lorentz dynamics | 8 pages; some misprints corrected; added some coments in the abstract
and also explaining the relationship with the work of P.A.M. Dirac; also
added 2 references | null | null | null | gr-qc math-ph math.AP math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider Maxwell-Lorentz dynamics: that is to say, Newton's law under the
action of a Lorentz's force which obeys the Maxwell equations. A natural class
of solutions are those given by the Lagrangian submanifolds of the phase space
when it is endowed with the symplectic structure modified by the
electromagnetic fi... | [
{
"created": "Fri, 27 Jan 2012 01:14:40 GMT",
"version": "v1"
},
{
"created": "Sun, 19 Feb 2012 10:26:57 GMT",
"version": "v2"
}
] | 2012-02-21 | [
[
"Alonso-Blanco",
"Ricardo J.",
""
]
] | We consider Maxwell-Lorentz dynamics: that is to say, Newton's law under the action of a Lorentz's force which obeys the Maxwell equations. A natural class of solutions are those given by the Lagrangian submanifolds of the phase space when it is endowed with the symplectic structure modified by the electromagnetic fiel... |
1812.00187 | Soham Bhattacharyya | Soham Bhattacharyya (IISER Thiruvananthapuram), S. Shankaranarayanan
(IIT Bombay) | Distinguishing general relativity from Chern-Simons gravity using
gravitational wave polarizations | 17 pages, version as accepted in Physical Review D | Phys. Rev. D 100, 024022 (2019) | 10.1103/PhysRevD.100.024022 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quasi-normal modes (QNMs) uniquely characterize the final black-hole. Till
now, only the QNM frequency and damping time are used to test General
relativity. In this work, we show explicitly that another property of the QNMs
--- their polarization --- can be a reliable tool for probing gravity. We
provide a consistent... | [
{
"created": "Sat, 1 Dec 2018 10:29:36 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Jun 2019 05:34:53 GMT",
"version": "v2"
}
] | 2019-07-24 | [
[
"Bhattacharyya",
"Soham",
"",
"IISER Thiruvananthapuram"
],
[
"Shankaranarayanan",
"S.",
"",
"IIT Bombay"
]
] | Quasi-normal modes (QNMs) uniquely characterize the final black-hole. Till now, only the QNM frequency and damping time are used to test General relativity. In this work, we show explicitly that another property of the QNMs --- their polarization --- can be a reliable tool for probing gravity. We provide a consistent t... |
2307.09198 | Dr. Sudhaker Upadhyay | Prosenjit Paul, Sudhaker Upadhyay, Dharm Veer Singh | Charged $AdS$ Black Holes in $4D$ Einstein--Gauss--Bonnet Massive
Gravity | 32 pages, 51 captioned figures, Published in Eur. Phys. J. Plus | Eur. Phys. J. Plus (2023) 138:566 | 10.1140/epjp/s13360-023-04176-x | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We investigate Einstein--Gauss--Bonnet--Maxwell massive gravity in $4D$ AdS
background and find an exact black hole solution. The horizon structure of the
black holes studied. Treating the cosmological constant as pressure and
Gauss-Bonnet coupling parameters, and massive gravity parameters as variables,
we drive the... | [
{
"created": "Mon, 17 Jul 2023 17:30:28 GMT",
"version": "v1"
}
] | 2023-07-19 | [
[
"Paul",
"Prosenjit",
""
],
[
"Upadhyay",
"Sudhaker",
""
],
[
"Singh",
"Dharm Veer",
""
]
] | We investigate Einstein--Gauss--Bonnet--Maxwell massive gravity in $4D$ AdS background and find an exact black hole solution. The horizon structure of the black holes studied. Treating the cosmological constant as pressure and Gauss-Bonnet coupling parameters, and massive gravity parameters as variables, we drive the f... |
gr-qc/0603028 | Kayll Lake | Kayll Lake | Integration of the Friedmann equation for universes of arbitrary
complexity | Final form to appear in Physical Review D15 | Phys.Rev.D74:123505,2006 | 10.1103/PhysRevD.74.123505 | null | gr-qc astro-ph hep-th | null | An explicit and complete set of constants of the motion are constructed
algorithmically for Friedmann-Lema\^{i}tre-Robertson-Walker (FLRW) models
consisting of an arbitrary number of non-interacting species. The inheritance
of constants of the motion from simpler models as more species are added is
stressed. It is th... | [
{
"created": "Thu, 9 Mar 2006 22:52:13 GMT",
"version": "v1"
},
{
"created": "Wed, 10 May 2006 20:51:20 GMT",
"version": "v2"
},
{
"created": "Tue, 5 Dec 2006 15:56:54 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Lake",
"Kayll",
""
]
] | An explicit and complete set of constants of the motion are constructed algorithmically for Friedmann-Lema\^{i}tre-Robertson-Walker (FLRW) models consisting of an arbitrary number of non-interacting species. The inheritance of constants of the motion from simpler models as more species are added is stressed. It is then... |
1412.4077 | David Nichols | Justin Vines and David A. Nichols | Properties of an affine transport equation and its holonomy | 18 pages, 4 figures, new short section (Sec. 5) in v3; updated to
match article published in GRG | Gen. Relativ. Gravit. 48: 127 (2016) | 10.1007/s10714-016-2118-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An affine transport equation was used recently to study properties of angular
momentum and gravitational-wave memory effects in general relativity. In this
paper, we investigate local properties of this transport equation in greater
detail. Associated with this transport equation is a map between the tangent
spaces a... | [
{
"created": "Fri, 12 Dec 2014 18:27:40 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Feb 2016 23:29:30 GMT",
"version": "v2"
},
{
"created": "Mon, 19 Sep 2016 08:45:36 GMT",
"version": "v3"
}
] | 2016-09-20 | [
[
"Vines",
"Justin",
""
],
[
"Nichols",
"David A.",
""
]
] | An affine transport equation was used recently to study properties of angular momentum and gravitational-wave memory effects in general relativity. In this paper, we investigate local properties of this transport equation in greater detail. Associated with this transport equation is a map between the tangent spaces at ... |
2210.02629 | Shahram Jalalzadeh | S. Jalalzadeh, A. Mohammadi and D. Demir | A quantum cosmology approach to cosmic coincidence and inflation | 14 pages, 4 figures, to appear in Physics of the Dark Univers | Phys. Dark Universe, 40 (2023) 101227 | 10.1016/j.dark.2023.101227 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work studies the quantum cosmology of a closed, spatially homogeneous,
and isotropic FLRW minisuperspace model with electromagnetic radiation as a
matter content. We solve the associated Wheeler-DeWitt (WDW) equation using the
holographic regularization method and show that the electromagnetic zero-point
energy ... | [
{
"created": "Thu, 6 Oct 2022 01:27:13 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Apr 2023 20:48:33 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Apr 2023 19:52:06 GMT",
"version": "v3"
}
] | 2023-04-20 | [
[
"Jalalzadeh",
"S.",
""
],
[
"Mohammadi",
"A.",
""
],
[
"Demir",
"D.",
""
]
] | This work studies the quantum cosmology of a closed, spatially homogeneous, and isotropic FLRW minisuperspace model with electromagnetic radiation as a matter content. We solve the associated Wheeler-DeWitt (WDW) equation using the holographic regularization method and show that the electromagnetic zero-point energy fo... |
2201.06186 | Kent Yagi | Kent Yagi | Analytic estimates of quasi-normal mode frequencies for black holes in
General Relativity and beyond | 17 pages, 5 figures; to appear in a book by China Science Publishing
and Media, based on lectures at 2021 Summer School on Early Universe and
Gravitational Wave Physics | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this chapter, we review the eikonal technique to analytically derive
approximate quasi-normal mode frequencies of black holes. We first review the
procedure in General Relativity and extend it to theories beyond General
Relativity. As an example of the latter, we focus on scalar Gauss-Bonnet
gravity in which a sca... | [
{
"created": "Mon, 17 Jan 2022 02:56:51 GMT",
"version": "v1"
}
] | 2022-01-19 | [
[
"Yagi",
"Kent",
""
]
] | In this chapter, we review the eikonal technique to analytically derive approximate quasi-normal mode frequencies of black holes. We first review the procedure in General Relativity and extend it to theories beyond General Relativity. As an example of the latter, we focus on scalar Gauss-Bonnet gravity in which a scala... |
gr-qc/9909022 | Jorge Pullin | Jorge Pullin | Matters of Gravity, The newsletter of the APS Topical Group on
Gravitation | 38 Pages, LaTeX, html.sty, no figures, Jorge Pullin (editor), PDF and
HTML versions in http://gravity.phys.psu.edu/mog.html | null | null | MOG-14 | gr-qc | null | Research Briefs:
Does the GSL imply an entropy bound?, by Warren G. Anderson
A lightweight review of middleweight black holes, by Ben Bromley
The physics of isolated horizons, by Daniel Sudarsky
LIGO project update, by Stan Whitcomb
Meeting reports:
Worskhop on initial value for binary black holes, by Car... | [
{
"created": "Tue, 7 Sep 1999 03:25:45 GMT",
"version": "v1"
},
{
"created": "Sat, 25 Sep 1999 13:30:49 GMT",
"version": "v2"
}
] | 2009-03-10 | [
[
"Pullin",
"Jorge",
""
]
] | Research Briefs: Does the GSL imply an entropy bound?, by Warren G. Anderson A lightweight review of middleweight black holes, by Ben Bromley The physics of isolated horizons, by Daniel Sudarsky LIGO project update, by Stan Whitcomb Meeting reports: Worskhop on initial value for binary black holes, by Carlos Lousto ITP... |
1901.03933 | James B. Hartle | James B. Hartle (University of California, Santa Barbara) | The Impact of Cosmology on Quantum Mechanics | 28 pages, 5 figures, revtex4, ref added, minor clarifications | null | null | null | gr-qc hep-th physics.hist-ph quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | When quantum mechanics was developed in the '20s of the last century another
revolution in physics was just starting. It began with the discovery that the
universe is expanding. For a long time quantum mechanics and cosmology
developed independently of one another. Yet the very discovery of the expansion
would eventu... | [
{
"created": "Sun, 13 Jan 2019 04:18:49 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Mar 2019 18:14:46 GMT",
"version": "v2"
}
] | 2019-03-06 | [
[
"Hartle",
"James B.",
"",
"University of California, Santa Barbara"
]
] | When quantum mechanics was developed in the '20s of the last century another revolution in physics was just starting. It began with the discovery that the universe is expanding. For a long time quantum mechanics and cosmology developed independently of one another. Yet the very discovery of the expansion would eventual... |
1705.01455 | S. I. Kruglov | S. I. Kruglov | Inflation of universe due to nonlinear electrodynamics | 14 pages, 7 figures, to appear in IJMPA | International Journal of Modern Physics A, Vol. 32 (2017) 1750071 | 10.1142/S0217751X17500713 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A model of nonlinear electrodynamics with a dimensional parameter $\beta$ is
considered. Electromagnetic fields are the source of the gravitation field and
inflation of the universe. We imply that the universe is filled by stochastic
magnetic fields. It is demonstrated that after the universe inflation the
universe d... | [
{
"created": "Mon, 1 May 2017 21:09:39 GMT",
"version": "v1"
}
] | 2017-05-08 | [
[
"Kruglov",
"S. I.",
""
]
] | A model of nonlinear electrodynamics with a dimensional parameter $\beta$ is considered. Electromagnetic fields are the source of the gravitation field and inflation of the universe. We imply that the universe is filled by stochastic magnetic fields. It is demonstrated that after the universe inflation the universe dec... |
1010.2426 | Thomas Thiemann | Thomas Thiemann | Lessons for Loop Quantum Gravity from Parametrised Field Theory | 37 pages, no figures | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a series of seminal papers, Laddha and Varadarajan have developed in depth
the quantisation of Parametrised Field Theory (PFT) in the kind of
discontinuous representations that are employed in Loop Quantum Gravity (LQG).
In one spatial dimension (circle) PFT is very similar to the closed bosonic
string and the con... | [
{
"created": "Tue, 12 Oct 2010 15:41:42 GMT",
"version": "v1"
}
] | 2010-10-13 | [
[
"Thiemann",
"Thomas",
""
]
] | In a series of seminal papers, Laddha and Varadarajan have developed in depth the quantisation of Parametrised Field Theory (PFT) in the kind of discontinuous representations that are employed in Loop Quantum Gravity (LQG). In one spatial dimension (circle) PFT is very similar to the closed bosonic string and the const... |
1902.07281 | Martin Kuchynka | Martin Kuchynka | Gauge fields with vanishing scalar invariants | null | 2019 Class. Quantum Grav. 36 205016 | 10.1088/1361-6382/ab4360 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider extension of some established techniques of study of tensor
fields on Lorentzian manifolds of arbitrary dimension to non-Abelian gauge
covariant fields. These are then applied to study of gauge fields with
vanishing scalar curvature invariants and universal Yang-Mills fields, for
which all possible higher... | [
{
"created": "Tue, 19 Feb 2019 20:57:27 GMT",
"version": "v1"
},
{
"created": "Thu, 12 Sep 2019 15:32:04 GMT",
"version": "v2"
},
{
"created": "Sat, 11 Jan 2020 17:50:07 GMT",
"version": "v3"
}
] | 2020-01-14 | [
[
"Kuchynka",
"Martin",
""
]
] | We consider extension of some established techniques of study of tensor fields on Lorentzian manifolds of arbitrary dimension to non-Abelian gauge covariant fields. These are then applied to study of gauge fields with vanishing scalar curvature invariants and universal Yang-Mills fields, for which all possible higher-o... |
gr-qc/0304076 | Ken-ichi Nakao | Ken-ichi Nakao and Yoshiyuki Morisawa | High Speed Dynamics of Collapsing Cylindrical Dust Fluid | 15 pages | Class.Quant.Grav. 21 (2004) 2101-2114 | 10.1088/0264-9381/21/8/013 | OCU-PHYS-199, AP-GR-9, YITP-03-18 | gr-qc | null | We construct approximate solutions that will describe the last stage of
cylindrically symmetric gravitational collapse of dust fluid. Just before the
spacetime singularity formation, the speed of the dust fluid might be almost
equal to the speed of light by gravitational acceleration. Therefore the
analytic solution ... | [
{
"created": "Tue, 22 Apr 2003 08:54:15 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Mar 2004 08:12:00 GMT",
"version": "v2"
}
] | 2016-08-31 | [
[
"Nakao",
"Ken-ichi",
""
],
[
"Morisawa",
"Yoshiyuki",
""
]
] | We construct approximate solutions that will describe the last stage of cylindrically symmetric gravitational collapse of dust fluid. Just before the spacetime singularity formation, the speed of the dust fluid might be almost equal to the speed of light by gravitational acceleration. Therefore the analytic solution de... |
2010.07317 | Jose Luis Bl\'azquez-Salcedo | Jose Luis Bl\'azquez-Salcedo, Christian Knoll and Eugen Radu | Traversable wormholes in Einstein-Dirac-Maxwell theory | 5 pages, 4 figures, version accepted for publication in PRL | Phys. Rev. Lett. 126, 101102 (2021) | 10.1103/PhysRevLett.126.101102 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct a specific example of a class of traversable wormholes in
Einstein-Dirac-Maxwell theory in four spacetime dimensions, without needing any
form of exotic matter. Restricting to a model with two massive fermions in a
singlet spinor state, we show the existence of spherically symmetric
asymptotically flat c... | [
{
"created": "Wed, 14 Oct 2020 18:00:09 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Mar 2021 14:39:56 GMT",
"version": "v2"
}
] | 2021-03-15 | [
[
"Blázquez-Salcedo",
"Jose Luis",
""
],
[
"Knoll",
"Christian",
""
],
[
"Radu",
"Eugen",
""
]
] | We construct a specific example of a class of traversable wormholes in Einstein-Dirac-Maxwell theory in four spacetime dimensions, without needing any form of exotic matter. Restricting to a model with two massive fermions in a singlet spinor state, we show the existence of spherically symmetric asymptotically flat con... |
0704.0366 | Antonio J. Segui | Pablo Diaz, Antonio Segui | Generalized Nariai Solutions for Yang-type Monopoles | 15 pages, 3 figures. References added, typos corrected and points
clarified | Phys.Rev.D76:064033,2007 | 10.1103/PhysRevD.76.064033 | null | gr-qc hep-th | null | A detailed study of the geometries that emerge by a gravitating generalized
Yang monopole in even dimensions is carried out. In particular, those which
present black hole and cosmological horizons. This two-horizon system is
thermally unstable. The process of thermalization will drive both horizons to
coalesce. This ... | [
{
"created": "Tue, 3 Apr 2007 11:12:25 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Jun 2007 09:41:28 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Diaz",
"Pablo",
""
],
[
"Segui",
"Antonio",
""
]
] | A detailed study of the geometries that emerge by a gravitating generalized Yang monopole in even dimensions is carried out. In particular, those which present black hole and cosmological horizons. This two-horizon system is thermally unstable. The process of thermalization will drive both horizons to coalesce. This li... |
2011.12749 | Norbert Bodendorfer | Norbert Bodendorfer, Fabian Haneder | A note on coarse graining and group representations | 11 pages | null | 10.1088/1361-6382/abed2b | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A coarse graining operation of spatially homogeneous quantum states based on
an SU(1,1) Lie group structure has recently been proposed in [1] and used in
[2] to compute an explicit renormalisation group flow in the context of loop
quantum cosmology. In this note, we explain the group theoretical origin of
this proced... | [
{
"created": "Wed, 25 Nov 2020 14:07:37 GMT",
"version": "v1"
}
] | 2021-07-07 | [
[
"Bodendorfer",
"Norbert",
""
],
[
"Haneder",
"Fabian",
""
]
] | A coarse graining operation of spatially homogeneous quantum states based on an SU(1,1) Lie group structure has recently been proposed in [1] and used in [2] to compute an explicit renormalisation group flow in the context of loop quantum cosmology. In this note, we explain the group theoretical origin of this procedur... |
gr-qc/9806051 | Olaf Richter | C. Klein and O. Richter | Physically Realistic Solutions to the Ernst Equation on Hyperelliptic
Riemann Surfaces | 32 pages, 2 figures, uses pstricks.sty, updated version (October 7,
1998), to appear in Phys. Rev. D | Phys.Rev. D58 (1998) 124018 | 10.1103/PhysRevD.58.124018 | LMU-TPW 98-10 | gr-qc | null | We show that the class of hyperelliptic solutions to the Ernst equation (the
stationary axisymmetric Einstein equations in vacuum) previously discovered by
Korotkin and Neugebauer and Meinel can be derived via Riemann-Hilbert
techniques. The present paper extends the discussion of the physical properties
of these sol... | [
{
"created": "Wed, 10 Jun 1998 12:04:12 GMT",
"version": "v1"
},
{
"created": "Wed, 7 Oct 1998 11:17:29 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Klein",
"C.",
""
],
[
"Richter",
"O.",
""
]
] | We show that the class of hyperelliptic solutions to the Ernst equation (the stationary axisymmetric Einstein equations in vacuum) previously discovered by Korotkin and Neugebauer and Meinel can be derived via Riemann-Hilbert techniques. The present paper extends the discussion of the physical properties of these solut... |
1604.01054 | Xi\'an O. Camanho | Xi\'an O. Camanho, Naresh Dadhich and Alfred Molina | (Not so) pure Lovelock Kasner metrics | 9 pages, no figures. Prepared for the Proceedings of the Fourteenth
Marcel Grossman Meeting on General Relativity, edited by Massimo Bianchi,
Robert T. Jantzen and Remo Ruffini. World Scientific, Singapore, 2016 | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The gravitational interaction is expected to be modified for very short
distances. This is particularly important in situations in which the curvature
of spacetime is large in general, such as close to the initial cosmological
singularity. The gravitational dynamics is then captured by the higher
curvature terms in t... | [
{
"created": "Mon, 4 Apr 2016 20:43:05 GMT",
"version": "v1"
}
] | 2016-04-06 | [
[
"Camanho",
"Xián O.",
""
],
[
"Dadhich",
"Naresh",
""
],
[
"Molina",
"Alfred",
""
]
] | The gravitational interaction is expected to be modified for very short distances. This is particularly important in situations in which the curvature of spacetime is large in general, such as close to the initial cosmological singularity. The gravitational dynamics is then captured by the higher curvature terms in the... |
2212.05892 | Pietro Lio | Aarjav Jain, Challenger Mishra, Pietro Li\`o | A physics-informed search for metric solutions to Ricci flow, their
embeddings, and visualisation | null | null | null | null | gr-qc cs.NE math-ph math.MP | http://creativecommons.org/licenses/by/4.0/ | Neural networks with PDEs embedded in their loss functions (physics-informed
neural networks) are employed as a function approximators to find solutions to
the Ricci flow (a curvature based evolution) of Riemannian metrics. A general
method is developed and applied to the real torus. The validity of the solution
is v... | [
{
"created": "Wed, 30 Nov 2022 08:17:06 GMT",
"version": "v1"
}
] | 2022-12-13 | [
[
"Jain",
"Aarjav",
""
],
[
"Mishra",
"Challenger",
""
],
[
"Liò",
"Pietro",
""
]
] | Neural networks with PDEs embedded in their loss functions (physics-informed neural networks) are employed as a function approximators to find solutions to the Ricci flow (a curvature based evolution) of Riemannian metrics. A general method is developed and applied to the real torus. The validity of the solution is ver... |
1602.05952 | Abdul Jawad | Abdul Jawad, M. Umair Shahzad | Accretion onto Some Well-Known Regular Black Holes | 25 pages, 7 figures, Accepted for publication in Eur. Phys. J. C | Eur. Phys. J. C 76(2016) 123 | 10.1140/epjc/s10052-016-3967-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we discuss the accretion onto static spherical symmetric
regular black holes for specific choices of equation of state parameter. The
underlying regular black holes are charged regular black hole using Fermi-Dirac
Distribution, logistic distribution, nonlinear electrodynamics, respectively
and Kehagias-... | [
{
"created": "Thu, 18 Feb 2016 11:08:03 GMT",
"version": "v1"
}
] | 2016-10-28 | [
[
"Jawad",
"Abdul",
""
],
[
"Shahzad",
"M. Umair",
""
]
] | In this work, we discuss the accretion onto static spherical symmetric regular black holes for specific choices of equation of state parameter. The underlying regular black holes are charged regular black hole using Fermi-Dirac Distribution, logistic distribution, nonlinear electrodynamics, respectively and Kehagias-Sf... |
gr-qc/9702009 | Carlos O. Lousto | Carlos O. Lousto (Univ. of Utah) | Infall of a particle into a black hole as a model for gravitational
radiation from the galactic center | Latex, 4 pages, 3 figures (resume' of the talk at the 18th Texas
Symposium) | Mod.Phys.Lett.A12:1879-1882,1997 | 10.1142/S0217732397001928 | null | gr-qc astro-ph hep-th | null | I present here the results of the study of the gravitational radiation
generated by the infall (from rest at radius $r_0$) of a point particle of mass
$m_0$ into a Schwarzschild black hole of mass $M$. We use Laplace's transform
methods and find that the spectra of radiation for $\sim5M<r_0<\infty$ presents
a series ... | [
{
"created": "Wed, 5 Feb 1997 16:48:42 GMT",
"version": "v1"
}
] | 2010-11-30 | [
[
"Lousto",
"Carlos O.",
"",
"Univ. of Utah"
]
] | I present here the results of the study of the gravitational radiation generated by the infall (from rest at radius $r_0$) of a point particle of mass $m_0$ into a Schwarzschild black hole of mass $M$. We use Laplace's transform methods and find that the spectra of radiation for $\sim5M<r_0<\infty$ presents a series of... |
gr-qc/9601004 | Kenneth Dalton | Kenneth Dalton | Gravity, Geometry, and Equivalence | 4 pages, LaTeX | null | null | null | gr-qc | null | We show that the energy-momentum four-vector of a planet, p = mu, is
conserved during geodesic motion. Therefore, there is no exchange of
energy-momentum with the gravitational field. We discuss the meaning of a
gravitational field which is free of energy, momentum, and stress.
| [
{
"created": "Wed, 3 Jan 1996 20:56:46 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Mar 1997 17:55:11 GMT",
"version": "v2"
}
] | 2008-02-03 | [
[
"Dalton",
"Kenneth",
""
]
] | We show that the energy-momentum four-vector of a planet, p = mu, is conserved during geodesic motion. Therefore, there is no exchange of energy-momentum with the gravitational field. We discuss the meaning of a gravitational field which is free of energy, momentum, and stress. |
gr-qc/0407044 | Vladimir S. Manko | V.S. Manko and E. Ruiz | Comment on "The double-Kerr solution" by W.B. Bonnor and B.R. Steadman | 5 pages, 1 figure; submitted to Classical and Quantum Gravity | Class.Quant.Grav. 22 (2005) 635-638 | 10.1088/0264-9381/22/3/N01 | null | gr-qc | null | Erroneous statements on the mathematical and physical properties of the
double-Kerr solution made in a recent paper (Class. Quantum Grav. 21 (2004)
2723) are commented.
| [
{
"created": "Tue, 13 Jul 2004 05:18:01 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Manko",
"V. S.",
""
],
[
"Ruiz",
"E.",
""
]
] | Erroneous statements on the mathematical and physical properties of the double-Kerr solution made in a recent paper (Class. Quantum Grav. 21 (2004) 2723) are commented. |
0911.1297 | Eugeny Babichev | E. Babichev, D. Langlois | Relativistic stars in f(R) and scalar-tensor theories | 20 pages, 10 Figs, revtex4; v2. minor corrections and changes; v3: a
few changes, matches published version | Phys.Rev.D81:124051,2010 | 10.1103/PhysRevD.81.124051 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study relativistic stars in the context of scalar tensor theories of
gravity that try to account for the observed cosmic acceleration and satisfy
the local gravity constraints via the chameleon mechanism. More specifically,
we consider two types of models: scalar tensor theories with an inverse power
law potential... | [
{
"created": "Fri, 6 Nov 2009 16:44:34 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Feb 2010 15:39:52 GMT",
"version": "v2"
},
{
"created": "Wed, 4 Aug 2010 13:22:34 GMT",
"version": "v3"
}
] | 2015-03-13 | [
[
"Babichev",
"E.",
""
],
[
"Langlois",
"D.",
""
]
] | We study relativistic stars in the context of scalar tensor theories of gravity that try to account for the observed cosmic acceleration and satisfy the local gravity constraints via the chameleon mechanism. More specifically, we consider two types of models: scalar tensor theories with an inverse power law potential a... |
gr-qc/9405011 | M. Rainer | U. Bleyer, M. Rainer, A. Zhuk | Classical and Quantum Solutions of Conformally Related Multidimensional
Cosmological Models | 23+1 pages LaTEX, 1 figure, (WordPerfect 6.0 file for the figure
appended, if this can not be processed a hardcopy of the figure can also be
requested from: ubleyer@aip.de ) | null | null | null | gr-qc | null | Consider multidim. universes M= R x M_1 x ... x M_n with D = 1+ d_1 .. + d_n,
where M_i of dimension d_i are of have constant curvature and compact for i>1.
For Lagrangian models L(R,phi) on M which depend only on Ricci curvature R and
a scalar field phi, there exists an explicit description of conformal
equivalence,... | [
{
"created": "Thu, 5 May 1994 19:38:30 GMT",
"version": "v1"
}
] | 2009-09-25 | [
[
"Bleyer",
"U.",
""
],
[
"Rainer",
"M.",
""
],
[
"Zhuk",
"A.",
""
]
] | Consider multidim. universes M= R x M_1 x ... x M_n with D = 1+ d_1 .. + d_n, where M_i of dimension d_i are of have constant curvature and compact for i>1. For Lagrangian models L(R,phi) on M which depend only on Ricci curvature R and a scalar field phi, there exists an explicit description of conformal equivalence, w... |
gr-qc/9710140 | Grant J. Mathews | G. J. Mathews, P. Marronetti, J. R. Wilson | Relativistic Hydrodynamics in Close Binary Systems: Analysis of
Neutron-Star Collapse | 14 pages, 3 figures PRD Accepted for publication | Phys. Rev. D 58, 043003 (1998) | 10.1103/PhysRevD.58.043003 | null | gr-qc astro-ph | null | We discuss the underlying relativistic physics which causes neutron stars to
compress and collapse in close binary systems as has recently been observed in
numerical (3+1) dimensional general relativistic hydrodynamic simulations. We
show that compression is driven by velocity-dependent relativistic hydrodynamic
term... | [
{
"created": "Fri, 31 Oct 1997 22:14:52 GMT",
"version": "v1"
},
{
"created": "Sat, 1 Nov 1997 02:14:08 GMT",
"version": "v2"
},
{
"created": "Thu, 21 May 1998 17:22:17 GMT",
"version": "v3"
}
] | 2016-08-25 | [
[
"Mathews",
"G. J.",
""
],
[
"Marronetti",
"P.",
""
],
[
"Wilson",
"J. R.",
""
]
] | We discuss the underlying relativistic physics which causes neutron stars to compress and collapse in close binary systems as has recently been observed in numerical (3+1) dimensional general relativistic hydrodynamic simulations. We show that compression is driven by velocity-dependent relativistic hydrodynamic terms ... |
1306.0884 | Barry Wardell | Marc Casals, Sam Dolan, Adrian C. Ottewill and Barry Wardell | Self-Force and Green Function in Schwarzschild spacetime via Quasinormal
Modes and Branch Cut | 23 pages, 13 figures, 3 tables. Final published version | Phys. Rev. D 88, 044022 (2013) | 10.1103/PhysRevD.88.044022 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The motion of a small compact object in a curved background spacetime
deviates from a geodesic due to the action of its own field, giving rise to a
self-force. This self-force may be calculated by integrating the Green function
for the wave equation over the past worldline of the small object. We compute
the self-for... | [
{
"created": "Tue, 4 Jun 2013 19:14:19 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Jun 2013 16:54:15 GMT",
"version": "v2"
},
{
"created": "Mon, 10 Jun 2013 11:36:05 GMT",
"version": "v3"
},
{
"created": "Tue, 5 Nov 2013 16:21:04 GMT",
"version": "v4"
}
] | 2013-11-06 | [
[
"Casals",
"Marc",
""
],
[
"Dolan",
"Sam",
""
],
[
"Ottewill",
"Adrian C.",
""
],
[
"Wardell",
"Barry",
""
]
] | The motion of a small compact object in a curved background spacetime deviates from a geodesic due to the action of its own field, giving rise to a self-force. This self-force may be calculated by integrating the Green function for the wave equation over the past worldline of the small object. We compute the self-force... |
2203.04785 | Puskar Mondal | Puskar Mondal | The nonlinear stability of n+1 dimensional FLRW spacetimes | 79 pages | null | null | null | gr-qc math-ph math.AP math.MP | http://creativecommons.org/licenses/by/4.0/ | We prove nonlinear Lyapunov stability of a family of `$n+1$'-dimensional
cosmological models of general relativity locally isometric to the Friedman
Lema\^itre Robertson Walker (FLRW) spacetimes including a positive cosmological
constant. In particular, we show that the perturbed solutions to the
Einstein-Euler field... | [
{
"created": "Wed, 9 Mar 2022 15:07:48 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Mar 2022 05:19:19 GMT",
"version": "v2"
},
{
"created": "Wed, 30 Mar 2022 14:49:15 GMT",
"version": "v3"
}
] | 2022-03-31 | [
[
"Mondal",
"Puskar",
""
]
] | We prove nonlinear Lyapunov stability of a family of `$n+1$'-dimensional cosmological models of general relativity locally isometric to the Friedman Lema\^itre Robertson Walker (FLRW) spacetimes including a positive cosmological constant. In particular, we show that the perturbed solutions to the Einstein-Euler field e... |
1404.0535 | Christof Wetterich | C. Wetterich | Eternal Universe | Extended discussion of physical time, map between frames, limitation
of proper time, incomplete geodesics in the Sitter space, graviton
scattering, 17 pages, 2 figures | Phys. Rev. D 90, 043520 (2014) | 10.1103/PhysRevD.90.043520 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss cosmological models for an eternal universe. Physical observables
show no singularity from the infinite past to the infinite future. While the
universe is evolving, there is no beginning and no end - the universe exists
forever. The early state of inflation is described in two different, but
equivalent pic... | [
{
"created": "Wed, 2 Apr 2014 12:36:59 GMT",
"version": "v1"
},
{
"created": "Mon, 19 May 2014 16:10:00 GMT",
"version": "v2"
}
] | 2014-08-27 | [
[
"Wetterich",
"C.",
""
]
] | We discuss cosmological models for an eternal universe. Physical observables show no singularity from the infinite past to the infinite future. While the universe is evolving, there is no beginning and no end - the universe exists forever. The early state of inflation is described in two different, but equivalent pictu... |
1105.5497 | Roberto Casadio | R. Casadio and A. Orlandi | Bubble dynamics: (nucleating) radiation inside dust | 8 pages, 4 figures. Revised version for PRD | Phys.Rev.D84:024006,2011 | 10.1103/PhysRevD.84.024006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider two spatially flat Friedmann-Robertson-Walker spacetimes divided
by a time-like thin shell in the nontrivial case in which the inner region of
finite extension contains radiation and the outer region is filled with dust.
We will then show that, while the evolution is determined by a large set of
constrain... | [
{
"created": "Fri, 27 May 2011 08:38:03 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Jun 2011 07:44:12 GMT",
"version": "v2"
}
] | 2015-03-19 | [
[
"Casadio",
"R.",
""
],
[
"Orlandi",
"A.",
""
]
] | We consider two spatially flat Friedmann-Robertson-Walker spacetimes divided by a time-like thin shell in the nontrivial case in which the inner region of finite extension contains radiation and the outer region is filled with dust. We will then show that, while the evolution is determined by a large set of constraints... |
1803.10454 | Niayesh Afshordi | Jahed Abedi (AEI, Hanover), Niayesh Afshordi (Waterloo/PI) | Echoes from the Abyss: A highly spinning black hole remnant for the
binary neutron star merger GW170817 | 2019 Buchalter Cosmology First Prize, Dedicated to the memories of
Stephen Hawking and Joe Polchinski, Matches the version published in JCAP +
added note regarding confirmation by electromagnetic observations | JCAP 1911, no. 11, 010 (2019) | 10.1088/1475-7516/2019/11/010 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The first direct observation of a binary neutron star (BNS) merger was a
watershed moment in multi-messenger astronomy. However, gravitational waves
from GW170817 have only been observed prior to the BNS merger, but
electromagnetic observations all follow the merger event. While post-merger
gravitational wave signal ... | [
{
"created": "Wed, 28 Mar 2018 08:23:35 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Feb 2019 05:52:20 GMT",
"version": "v2"
},
{
"created": "Sun, 5 Jan 2020 15:09:47 GMT",
"version": "v3"
}
] | 2020-01-07 | [
[
"Abedi",
"Jahed",
"",
"AEI, Hanover"
],
[
"Afshordi",
"Niayesh",
"",
"Waterloo/PI"
]
] | The first direct observation of a binary neutron star (BNS) merger was a watershed moment in multi-messenger astronomy. However, gravitational waves from GW170817 have only been observed prior to the BNS merger, but electromagnetic observations all follow the merger event. While post-merger gravitational wave signal in... |
0905.4704 | Lorenzo Iorio | Lorenzo Iorio | Long-Range Models of Modified Gravity and Their Agreement with Solar
System and Double Pulsar Data | LaTex2e, 17 pages, 3 tables, no figures, 97 references. Small
stylistic improvement in the Conclusions. Invited contribution to the Fifth
International School on Field Theory and Gravitation, Cuiaba', Mato Grosso,
MT, Brasil, April 20-24 2009 | PoS ISFTG:018,2009 | null | null | gr-qc astro-ph.CO astro-ph.EP astro-ph.GA hep-ph physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Many long-range modifications of the Newtonian/Einsteinian standard laws of
gravity have been proposed in the recent past to explain various celestial
phenomena occurring at different scales ranging from solar system to the entire
universe. The most famous ones are the so-called Pioneer anomaly, {i.e.} a
still unexpl... | [
{
"created": "Thu, 28 May 2009 17:45:16 GMT",
"version": "v1"
},
{
"created": "Fri, 29 May 2009 12:34:52 GMT",
"version": "v2"
}
] | 2009-08-03 | [
[
"Iorio",
"Lorenzo",
""
]
] | Many long-range modifications of the Newtonian/Einsteinian standard laws of gravity have been proposed in the recent past to explain various celestial phenomena occurring at different scales ranging from solar system to the entire universe. The most famous ones are the so-called Pioneer anomaly, {i.e.} a still unexplai... |
gr-qc/0603048 | Lap-Ming Lin | Lap-Ming Lin, Jerome Novak | Rotating star initial data for a constrained scheme in numerical
relativity | Minor changes and one figure added. Version accepted for publication
in Class. Quant. Grav | Class.Quant.Grav.23:4545,2006 | 10.1088/0264-9381/23/14/001 | null | gr-qc astro-ph | null | A new numerical code for computing stationary axisymmetric rapidly rotating
stars in general relativity is presented. The formulation is based on a fully
constrained-evolution scheme for 3+1 numerical relativity using the Dirac gauge
and maximal slicing. We use both the polytropic and MIT bag model equations of
state... | [
{
"created": "Mon, 13 Mar 2006 11:08:17 GMT",
"version": "v1"
},
{
"created": "Tue, 30 May 2006 15:38:57 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Lin",
"Lap-Ming",
""
],
[
"Novak",
"Jerome",
""
]
] | A new numerical code for computing stationary axisymmetric rapidly rotating stars in general relativity is presented. The formulation is based on a fully constrained-evolution scheme for 3+1 numerical relativity using the Dirac gauge and maximal slicing. We use both the polytropic and MIT bag model equations of state t... |
1710.04457 | Maria E. Gabach Clement | Sergio Dain and Mar\'ia Eugenia Gabach-Clement | Geometrical inequalities bounding angular momentum and charges in
General Relativity | Invited review for Living Reviews in Relativity | null | 10.1007/s41114-018-0014-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Geometrical inequalities show how certain parameters of a physical system set
restrictions on other parameters. For instance, a black hole of given mass can
not rotate too fast, or an ordinary object of given size can not have too much
electric charge. In this article we are interested in bounds on the angular
moment... | [
{
"created": "Thu, 12 Oct 2017 11:25:43 GMT",
"version": "v1"
}
] | 2018-07-18 | [
[
"Dain",
"Sergio",
""
],
[
"Gabach-Clement",
"María Eugenia",
""
]
] | Geometrical inequalities show how certain parameters of a physical system set restrictions on other parameters. For instance, a black hole of given mass can not rotate too fast, or an ordinary object of given size can not have too much electric charge. In this article we are interested in bounds on the angular momentum... |
2303.16747 | Edward Wilson-Ewing | Timothy Blackmore, Edward Wilson-Ewing | Numerics of Bianchi type II and type IX spacetimes in effective loop
quantum cosmology | 24 pages, 11 figures. v2: Clarifications and references added | Class. Quant. Grav. 40 (2023) 215010 | 10.1088/1361-6382/acfd7c | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We numerically solve the effective loop quantum cosmology dynamics for the
vacuum Bianchi type II and type IX spacetimes, in particular studying how the
Kasner exponents evolve across the loop quantum cosmology bounce. We find that
when the spatial curvature is negligible at the bounce then the Kasner
exponents trans... | [
{
"created": "Wed, 29 Mar 2023 14:53:23 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Sep 2023 14:22:01 GMT",
"version": "v2"
}
] | 2023-10-11 | [
[
"Blackmore",
"Timothy",
""
],
[
"Wilson-Ewing",
"Edward",
""
]
] | We numerically solve the effective loop quantum cosmology dynamics for the vacuum Bianchi type II and type IX spacetimes, in particular studying how the Kasner exponents evolve across the loop quantum cosmology bounce. We find that when the spatial curvature is negligible at the bounce then the Kasner exponents transfo... |
2211.10123 | J. W. van Holten | Jan W. van Holten | Curvature dynamics in General Relativity | 13 pages plus tittle page and abstract; revised version [v2]: small
changes in text, acknowledgement and references added; [v3]: equation (22)
simplified, appendix added | Universe 2023, 9, 110 | 10.3390/universe9020110 | Nikhef 2022-019 | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | The equations of General Relativity are recast in the form of a wave equation
for the Weyl tensor. This allows to reformulate gravitational wave theory in
terms of curvature waves, rather than metric waves. The existence of two
transverse polarization states for curvature waves is proven and in the
linearized approxi... | [
{
"created": "Fri, 18 Nov 2022 09:52:11 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Dec 2022 13:00:06 GMT",
"version": "v2"
},
{
"created": "Mon, 20 Feb 2023 11:53:07 GMT",
"version": "v3"
}
] | 2023-02-21 | [
[
"van Holten",
"Jan W.",
""
]
] | The equations of General Relativity are recast in the form of a wave equation for the Weyl tensor. This allows to reformulate gravitational wave theory in terms of curvature waves, rather than metric waves. The existence of two transverse polarization states for curvature waves is proven and in the linearized approxima... |
2005.11726 | Nikolaos Dimakis | T. Pailas, N. Dimakis, Andronikos Paliathanasis, Petros A. Terzis and
T. Christodoulakis | Infinite dimensional symmetry groups of the Friedmann equations | 19 pages, no figures, Latex2e source file. Minor changes to match
published version | Phys. Rev. D 102, 063524 (2020) | 10.1103/PhysRevD.102.063524 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find the symmetry generators for the Friedman equations emanating from a
perfect fluid source, in the presence of a cosmological constant term. The
relevant dynamics is seen to be governed by two coupled, first order ordinary
differential equations, the continuity and the quadratic constraint equation.
Arbitrary f... | [
{
"created": "Sun, 24 May 2020 12:03:47 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Sep 2020 02:47:43 GMT",
"version": "v2"
},
{
"created": "Sat, 19 Sep 2020 05:13:19 GMT",
"version": "v3"
}
] | 2020-09-23 | [
[
"Pailas",
"T.",
""
],
[
"Dimakis",
"N.",
""
],
[
"Paliathanasis",
"Andronikos",
""
],
[
"Terzis",
"Petros A.",
""
],
[
"Christodoulakis",
"T.",
""
]
] | We find the symmetry generators for the Friedman equations emanating from a perfect fluid source, in the presence of a cosmological constant term. The relevant dynamics is seen to be governed by two coupled, first order ordinary differential equations, the continuity and the quadratic constraint equation. Arbitrary fun... |
1410.3835 | Neil J. Cornish | Neil J. Cornish and Tyson B. Littenberg | BayesWave: Bayesian Inference for Gravitational Wave Bursts and
Instrument Glitches | 36 pages, 15 figures, Version accepted by Class. Quant. Grav | null | 10.1088/0264-9381/32/13/135012 | null | gr-qc astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A central challenge in Gravitational Wave Astronomy is identifying weak
signals in the presence of non-stationary and non-Gaussian noise. The
separation of gravitational wave signals from noise requires good models for
both. When accurate signal models are available, such as for binary Neutron
star systems, it is pos... | [
{
"created": "Tue, 14 Oct 2014 20:00:21 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Mar 2015 21:49:23 GMT",
"version": "v2"
},
{
"created": "Thu, 7 May 2015 15:05:51 GMT",
"version": "v3"
}
] | 2015-06-17 | [
[
"Cornish",
"Neil J.",
""
],
[
"Littenberg",
"Tyson B.",
""
]
] | A central challenge in Gravitational Wave Astronomy is identifying weak signals in the presence of non-stationary and non-Gaussian noise. The separation of gravitational wave signals from noise requires good models for both. When accurate signal models are available, such as for binary Neutron star systems, it is possi... |
1710.00997 | Sourav Bhattacharya | Sourav Bhattacharya | Kerr-de Sitter spacetime, Penrose process and the generalized area
theorem | v2, 21pp; added references and discussions, improved presentation,
accepted in PRD | Phys. Rev. D 97, 084049 (2018) | 10.1103/PhysRevD.97.084049 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate various aspects of energy extraction via the Penrose process
in the Kerr-de Sitter spacetime. We show that the increase in the value of a
positive cosmological constant, $\Lambda$, always reduces the efficiency of
this process. The Kerr-de Sitter spacetime has two ergospheres -- associated
with the bla... | [
{
"created": "Tue, 3 Oct 2017 05:40:15 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Apr 2018 05:42:49 GMT",
"version": "v2"
}
] | 2018-05-02 | [
[
"Bhattacharya",
"Sourav",
""
]
] | We investigate various aspects of energy extraction via the Penrose process in the Kerr-de Sitter spacetime. We show that the increase in the value of a positive cosmological constant, $\Lambda$, always reduces the efficiency of this process. The Kerr-de Sitter spacetime has two ergospheres -- associated with the black... |
2105.07251 | Javier Olmedo | Javier Olmedo | Inflation from inhomogeneous polarized Gowdy model | 26 pages, match with published version, typos corrected | null | 10.1088/1361-6382/ac1901 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study polarized Gowdy cosmologies on the three torus coupled to a massive
scalar field. The phase space of the model admits a simple splitting between
homogeneous and inhomogeneous sectors after a suitable gauge fixing. The
presence of the mass term of the scalar field breaks the linearity of the
equations of moti... | [
{
"created": "Sat, 15 May 2021 15:48:37 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Dec 2021 10:27:19 GMT",
"version": "v2"
}
] | 2021-12-28 | [
[
"Olmedo",
"Javier",
""
]
] | We study polarized Gowdy cosmologies on the three torus coupled to a massive scalar field. The phase space of the model admits a simple splitting between homogeneous and inhomogeneous sectors after a suitable gauge fixing. The presence of the mass term of the scalar field breaks the linearity of the equations of motion... |
gr-qc/0002096 | K. R. P. Sjodin | K R P Sjodin, U Sperhake and J A Vickers | Dynamic Cosmic Strings I | RevTex, 17 pages, 20 images | Phys.Rev. D63 (2001) 024011 | 10.1103/PhysRevD.63.024011 | null | gr-qc | null | The field equations for a time dependent cylindrical cosmic string coupled to
gravity are reformulated in terms of geometrical variables defined on a
2+1-dimensional spacetime by using the method of Geroch decomposition. Unlike
the 4-dimensional spacetime the reduced case is asymptotically flat. A
numerical method fo... | [
{
"created": "Tue, 29 Feb 2000 19:54:59 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Mar 2000 17:21:40 GMT",
"version": "v2"
},
{
"created": "Wed, 23 May 2001 11:23:23 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Sjodin",
"K R P",
""
],
[
"Sperhake",
"U",
""
],
[
"Vickers",
"J A",
""
]
] | The field equations for a time dependent cylindrical cosmic string coupled to gravity are reformulated in terms of geometrical variables defined on a 2+1-dimensional spacetime by using the method of Geroch decomposition. Unlike the 4-dimensional spacetime the reduced case is asymptotically flat. A numerical method for ... |
2206.01039 | Zhu Yi | Zhu Yi | Primordial black holes and scalar-induced gravitational waves from the
generalized Brans-Dicke theory | 26 pages, 3 figures | JCAP03(2023)048 | 10.1088/1475-7516/2023/03/048 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The power spectrum of the scalar-tensor inflation with a quadratic form Ricci
scalar coupling function $\Omega(\phi)=1-
2\phi/\phi_c+(1+\delta^2)(\phi/\phi_c)^2$ can be enhanced enough to produce
primordial black holes and generate scalar-induced gravitational waves. The
masses of primordial black holes and the frequ... | [
{
"created": "Thu, 2 Jun 2022 13:20:21 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Mar 2023 02:19:20 GMT",
"version": "v2"
}
] | 2023-03-23 | [
[
"Yi",
"Zhu",
""
]
] | The power spectrum of the scalar-tensor inflation with a quadratic form Ricci scalar coupling function $\Omega(\phi)=1- 2\phi/\phi_c+(1+\delta^2)(\phi/\phi_c)^2$ can be enhanced enough to produce primordial black holes and generate scalar-induced gravitational waves. The masses of primordial black holes and the frequen... |
gr-qc/9803038 | Wang Anzhong | Anzhong Wang and Yumei Wu | Generalized Vaidya Solutions | Gen. Relativ. Grav. 31 (1), 107-114 (1999) | null | 10.1023/A:1018819521971 | null | gr-qc | null | A large family of solutions, representing, in general, spherically symmetric
Type II fluid, is presented, which includes most of the known solutions to the
Einstein field equations, such as, the monopole-de Sitter-charged Vaidya ones.
| [
{
"created": "Wed, 11 Mar 1998 13:30:26 GMT",
"version": "v1"
},
{
"created": "Fri, 29 Oct 1999 19:38:36 GMT",
"version": "v2"
}
] | 2015-06-25 | [
[
"Wang",
"Anzhong",
""
],
[
"Wu",
"Yumei",
""
]
] | A large family of solutions, representing, in general, spherically symmetric Type II fluid, is presented, which includes most of the known solutions to the Einstein field equations, such as, the monopole-de Sitter-charged Vaidya ones. |
0705.4002 | Hao Wei | Hao Wei, Shuang Nan Zhang | Dynamics of Quintom and Hessence Energies in Loop Quantum Cosmology | 14 pages, 4 tables, revtex4; v2: accepted for publication in Phys.
Rev. D; v3: published version | Phys.Rev.D76:063005,2007 | 10.1103/PhysRevD.76.063005 | null | gr-qc astro-ph hep-th | null | In the present work, we investigate the universe dominated by quintom or
hessence energies in Loop Quantum Cosmology (LQC). Interestingly enough, we
find that there are some stable attractors in these two cases. In the case of
quintom, all stable attractors have the feature of decelerated expansion. In
the case of he... | [
{
"created": "Mon, 28 May 2007 09:43:58 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Jul 2007 08:23:02 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Sep 2007 06:40:59 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Wei",
"Hao",
""
],
[
"Zhang",
"Shuang Nan",
""
]
] | In the present work, we investigate the universe dominated by quintom or hessence energies in Loop Quantum Cosmology (LQC). Interestingly enough, we find that there are some stable attractors in these two cases. In the case of quintom, all stable attractors have the feature of decelerated expansion. In the case of hess... |
1405.2172 | Amitabha Lahiri | Karan Fernandes and Amitabha Lahiri | Kaluza Ansatz applied to Eddington inspired Born-Infeld Gravity | V2: 19pp. New section on solution, equivalence of metric and
metric-affine theories shown explicitly, convention about numerical factors
changed | Phys. Rev. D 91, 044014 (2015) | 10.1103/PhysRevD.91.044014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We apply Kaluza's procedure to Eddington-inspired Born-Infeld action in
gravity in five dimensions. The resulting action contains, in addition to the
usual four-dimensional actions for gravity and electromagnetism, nonlinear
couplings between the electromagnetic field strength and curvature. Considering
the spherical... | [
{
"created": "Fri, 9 May 2014 08:42:49 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Nov 2014 06:24:33 GMT",
"version": "v2"
}
] | 2015-03-05 | [
[
"Fernandes",
"Karan",
""
],
[
"Lahiri",
"Amitabha",
""
]
] | We apply Kaluza's procedure to Eddington-inspired Born-Infeld action in gravity in five dimensions. The resulting action contains, in addition to the usual four-dimensional actions for gravity and electromagnetism, nonlinear couplings between the electromagnetic field strength and curvature. Considering the spherically... |
2209.11696 | Bohdan Lev | B. I. Lev | Implications of the geometric representation of the early universe wave
function | 8 pages | null | 10.4236/jmp.2023.146044 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The main goal of this article is to present an algebraic approach to
describing the birth and start evolution of the universe. In such an approach,
it is possible to use the nature of supersymmetry in terms of the geometric
representation of the wave function and propose a mechanism of spontaneous
symmetry breaking o... | [
{
"created": "Thu, 22 Sep 2022 09:15:44 GMT",
"version": "v1"
},
{
"created": "Thu, 22 Feb 2024 14:54:16 GMT",
"version": "v2"
},
{
"created": "Sat, 24 Feb 2024 10:32:40 GMT",
"version": "v3"
}
] | 2024-02-27 | [
[
"Lev",
"B. I.",
""
]
] | The main goal of this article is to present an algebraic approach to describing the birth and start evolution of the universe. In such an approach, it is possible to use the nature of supersymmetry in terms of the geometric representation of the wave function and propose a mechanism of spontaneous symmetry breaking of ... |
1612.03290 | Akihiro Ishibashi | Stefan Hollands, Akihiro Ishibashi and Robert M. Wald | BMS Supertranslations and Memory in Four and Higher Dimensions | 31 pages, no figures, 1 table | null | 10.1088/1361-6382/aa777a | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the memory effect in even dimensional spacetimes of dimension $d
\ge 4$ arising from a burst of gravitational radiation. When $d=4$, the natural
frames in the stationary eras before and after the burst differ by the
composition of a boost and supertranslation, and this supertranslation
characterizes the "... | [
{
"created": "Sat, 10 Dec 2016 13:13:33 GMT",
"version": "v1"
}
] | 2017-07-26 | [
[
"Hollands",
"Stefan",
""
],
[
"Ishibashi",
"Akihiro",
""
],
[
"Wald",
"Robert M.",
""
]
] | We consider the memory effect in even dimensional spacetimes of dimension $d \ge 4$ arising from a burst of gravitational radiation. When $d=4$, the natural frames in the stationary eras before and after the burst differ by the composition of a boost and supertranslation, and this supertranslation characterizes the "me... |
2107.04063 | Alexander C. Jenkins | Diego Blas and Alexander C. Jenkins | Detecting stochastic gravitational waves with binary resonance | 36 pages, 9 figures, matches version published in PRD | Phys. Rev. D 105 (2022), 064021 | 10.1103/PhysRevD.105.064021 | KCL-PH-TH/2021-34 | gr-qc astro-ph.CO astro-ph.IM hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | LIGO and Virgo have initiated the era of gravitational-wave (GW) astronomy;
but in order to fully explore GW frequency spectrum, we must turn our attention
to innovative techniques for GW detection. One such approach is to use binary
systems as dynamical GW detectors by studying the subtle perturbations to their
orbi... | [
{
"created": "Thu, 8 Jul 2021 18:41:12 GMT",
"version": "v1"
},
{
"created": "Fri, 16 Jul 2021 13:35:32 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Mar 2022 17:57:47 GMT",
"version": "v3"
}
] | 2022-03-14 | [
[
"Blas",
"Diego",
""
],
[
"Jenkins",
"Alexander C.",
""
]
] | LIGO and Virgo have initiated the era of gravitational-wave (GW) astronomy; but in order to fully explore GW frequency spectrum, we must turn our attention to innovative techniques for GW detection. One such approach is to use binary systems as dynamical GW detectors by studying the subtle perturbations to their orbits... |
gr-qc/0110073 | Edward Malec | Edward Malec (IF UJ) | Schwarzschild horizon and the gravitational redshift formula | Revtex, 5 p. Rewritten Sec. II, minor changes in Secs III - VII. To
appear in the Classical and Quantum Gravity | Class.Quant.Grav. 19 (2002) 571-578 | 10.1088/0264-9381/19/3/311 | null | gr-qc astro-ph hep-th | null | The gravitational redshift formula is usually derived in the geometric optics
approximation. In this note we consider an exact formulation of the problem in
the Schwarzschild space-time, with the intention to clarify under what
conditions this redshift law is valid. It is shown that in the case of shocks
the radial c... | [
{
"created": "Tue, 16 Oct 2001 17:47:30 GMT",
"version": "v1"
},
{
"created": "Sat, 22 Dec 2001 16:44:14 GMT",
"version": "v2"
},
{
"created": "Thu, 27 Dec 2001 07:56:23 GMT",
"version": "v3"
}
] | 2009-11-07 | [
[
"Malec",
"Edward",
"",
"IF UJ"
]
] | The gravitational redshift formula is usually derived in the geometric optics approximation. In this note we consider an exact formulation of the problem in the Schwarzschild space-time, with the intention to clarify under what conditions this redshift law is valid. It is shown that in the case of shocks the radial com... |
1111.5210 | Qasem Exirifard | Qasem Exirifard | GravitoMagnetic Field in Tensor-Vector-Scalar Theory | Revised to include the published constraint due to the image of black
hole taken by the Event Horizon Telescope | JCAP04(2013)034; JCAP05(2019)A01 | 10.1088/1475-7516/2013/04/034; 10.1088/1475-7516/2019/05/A01 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the gravitomagnetism in the TeVeS theory. We compute the
gravitomagnetic field that a slow-moving mass distribution produces in its
Newtonian regime. We report that the consistency between the TeVeS
gravitomagnetic field and that predicted by the Einstein-Hilbert theory leads
to a relation between the vector... | [
{
"created": "Tue, 22 Nov 2011 15:04:10 GMT",
"version": "v1"
},
{
"created": "Sun, 3 Mar 2013 11:56:36 GMT",
"version": "v2"
},
{
"created": "Wed, 10 Apr 2013 18:25:13 GMT",
"version": "v3"
},
{
"created": "Mon, 27 May 2019 16:05:07 GMT",
"version": "v4"
}
] | 2019-05-28 | [
[
"Exirifard",
"Qasem",
""
]
] | We study the gravitomagnetism in the TeVeS theory. We compute the gravitomagnetic field that a slow-moving mass distribution produces in its Newtonian regime. We report that the consistency between the TeVeS gravitomagnetic field and that predicted by the Einstein-Hilbert theory leads to a relation between the vector a... |
1110.0832 | Carlos A. R. Herdeiro | Carlos Herdeiro, Shinji Hirano and Yuki Sato | n-DBI gravity | 13 pages | null | 10.1103/PhysRevD.84.124048 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | n-DBI gravity is a gravitational theory introduced in arXiv:1109.1468
[hep-th], motivated by Dirac-Born-Infeld type conformal scalar theory and
designed to yield non-eternal inflation spontaneously. It contains a foliation
structure provided by an everywhere time-like vector field n, which couples to
the gravitationa... | [
{
"created": "Tue, 4 Oct 2011 20:00:03 GMT",
"version": "v1"
}
] | 2013-05-29 | [
[
"Herdeiro",
"Carlos",
""
],
[
"Hirano",
"Shinji",
""
],
[
"Sato",
"Yuki",
""
]
] | n-DBI gravity is a gravitational theory introduced in arXiv:1109.1468 [hep-th], motivated by Dirac-Born-Infeld type conformal scalar theory and designed to yield non-eternal inflation spontaneously. It contains a foliation structure provided by an everywhere time-like vector field n, which couples to the gravitational ... |
gr-qc/9408028 | Ivan Avramidi | I. G. Avramidi | New Algebraic Methods for Calculating the Heat Kernel and Effective
Action in Quantum Gravity and Gauge Theories | 22 pages, Plain TeX, University of Greifswald (August, 1994) | in: Heat Kernel Techniques and Quantum Gravity, Ed. S. A. Fulling,
Discourses in Mathematics and Its Applications, (College Station, Texas:
Department of Mathematics, Texas A&M University, 1995), pp. 115-140 | null | null | gr-qc hep-th | null | An overview about recent progress in the calculation of the heat kernel and
the one-loop effective action in quantum gravity and gauge theories is given.
We analyse the general structure of the standard Schwinger-De Witt asymptotic
expansion and discuss the applicability of that to the case of strongly curved
manifol... | [
{
"created": "Wed, 24 Aug 1994 14:31:47 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Avramidi",
"I. G.",
""
]
] | An overview about recent progress in the calculation of the heat kernel and the one-loop effective action in quantum gravity and gauge theories is given. We analyse the general structure of the standard Schwinger-De Witt asymptotic expansion and discuss the applicability of that to the case of strongly curved manifolds... |
1911.03392 | Yuri Pavlov | A. A. Grib, Yu. V. Pavlov | On the limiting energy of the collision of elementary particles close to
horizon of the rotating black hole | 9 pages, no figures, published version | Mod. Phys. Lett. A 35 (2020) 2050262 | 10.1142/S0217732320502624 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Arguments are given for the conclusion that the energy of collision of two
ultrarelativistic elementary particles due to gravitational radiation cannot
exceed the Planck value. Comparison of the gravitational and electromagnetic
radiation for charged particles close to the horizon of Kerr black hole is
made. If for t... | [
{
"created": "Fri, 8 Nov 2019 17:14:00 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Oct 2020 06:59:36 GMT",
"version": "v2"
}
] | 2020-10-29 | [
[
"Grib",
"A. A.",
""
],
[
"Pavlov",
"Yu. V.",
""
]
] | Arguments are given for the conclusion that the energy of collision of two ultrarelativistic elementary particles due to gravitational radiation cannot exceed the Planck value. Comparison of the gravitational and electromagnetic radiation for charged particles close to the horizon of Kerr black hole is made. If for tra... |
2010.15625 | Betti Hartmann | Y. Brihaye, F. C\^onsole and B. Hartmann | Inflation inside non-topological defects and scalar black holes | 13 pages; Manuscript prepared for special edition of "Symmetry" in
celebration of Yves Brihaye's career | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we demonstrate that a phenomenon described as "topological
inflation" during which inflation occurs inside the core of topological
defects, has a non-topological counterpart. This appears in a simple set-up
containing Einstein gravity coupled minimally to an electromagnetic field as
well as a self-inte... | [
{
"created": "Thu, 29 Oct 2020 14:11:07 GMT",
"version": "v1"
}
] | 2020-10-30 | [
[
"Brihaye",
"Y.",
""
],
[
"Cônsole",
"F.",
""
],
[
"Hartmann",
"B.",
""
]
] | In this paper, we demonstrate that a phenomenon described as "topological inflation" during which inflation occurs inside the core of topological defects, has a non-topological counterpart. This appears in a simple set-up containing Einstein gravity coupled minimally to an electromagnetic field as well as a self-intera... |
1403.6014 | Nejat Yilmaz | Nejat Tevfik Yilmaz | Constant Curvature Solutions of Minimal Massive Gravity | 13 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the constant curvature solutions of the minimal massive gravity
(MMGR). After introducing a condition on the physical and the fiducial metrics
as well as the Stuckelberg scalars which truncates the action to the
Einstein-Hilbert one in the presence of an effective cosmological constant we
focus on the soluti... | [
{
"created": "Mon, 24 Mar 2014 15:53:05 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Apr 2014 14:30:19 GMT",
"version": "v2"
}
] | 2014-04-15 | [
[
"Yilmaz",
"Nejat Tevfik",
""
]
] | We study the constant curvature solutions of the minimal massive gravity (MMGR). After introducing a condition on the physical and the fiducial metrics as well as the Stuckelberg scalars which truncates the action to the Einstein-Hilbert one in the presence of an effective cosmological constant we focus on the solution... |
1412.7981 | Eduardo Sergio Santini | E. Sergio Santini (CNEN & CBPF-Brasil) | Is there a super-selection rule in quantum cosmology? | 11 pages 13 figures | Gravit. Cosmol. (2019) 25: 226 | 10.1134/S0202289319030101 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A certain approach to solving the Wheeler-DeWitt equation in quantum
cosmology, which is based on a type of super-selection rule by which negative
frequency solutions are discarded, is discussed. In a preliminary analysis, we
recall well known results in relativistic quantum field theory, showing that
adopt this appr... | [
{
"created": "Fri, 26 Dec 2014 19:56:54 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Jan 2016 14:10:16 GMT",
"version": "v2"
},
{
"created": "Wed, 27 Jan 2016 19:32:53 GMT",
"version": "v3"
},
{
"created": "Fri, 25 Oct 2019 21:40:09 GMT",
"version": "v4"
}
] | 2019-11-06 | [
[
"Santini",
"E. Sergio",
"",
"CNEN & CBPF-Brasil"
]
] | A certain approach to solving the Wheeler-DeWitt equation in quantum cosmology, which is based on a type of super-selection rule by which negative frequency solutions are discarded, is discussed. In a preliminary analysis, we recall well known results in relativistic quantum field theory, showing that adopt this approa... |
2010.11811 | Adrian Kent | Adrian Kent (Centre for Quantum Information and Foundations, DAMTP,
University of Cambridge and Perimeter Institute for Theoretical Physics) | Tests of Quantum Gravity near Measurement Events | Small typos corrected and clarifications added | Phys. Rev. D 103, 064038 (2021) | 10.1103/PhysRevD.103.064038 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Experiments have recently been proposed testing whether quantum gravitational
interactions generate entanglement between adjacent masses in position
superposition states. We propose potentially less challenging experiments that
test quantum gravity against theories with classical space-times defined by
postulating se... | [
{
"created": "Thu, 22 Oct 2020 15:44:30 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Nov 2020 15:08:29 GMT",
"version": "v2"
},
{
"created": "Thu, 28 Jan 2021 17:21:46 GMT",
"version": "v3"
}
] | 2021-05-03 | [
[
"Kent",
"Adrian",
"",
"Centre for Quantum Information and Foundations, DAMTP,\n University of Cambridge and Perimeter Institute for Theoretical Physics"
]
] | Experiments have recently been proposed testing whether quantum gravitational interactions generate entanglement between adjacent masses in position superposition states. We propose potentially less challenging experiments that test quantum gravity against theories with classical space-times defined by postulating semi... |
1308.0394 | Clifford M. Will | Pierre Fromholz, Eric Poisson and Clifford M. Will | The Schwarzschild metric: It's the coordinates, stupid! | 15 pages, to be submitted to the American Journal of Physics | Am. J. Phys. 82, 295 (2014) | 10.1119/1.4850396 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Every general relativity textbook emphasizes that coordinates have no
physical meaning. Nevertheless, a coordinate choice must be made in order to
carry out real calculations, and that choice can make the difference between a
calculation that is simple and one that is a mess. We give a concrete
illustration of the ma... | [
{
"created": "Fri, 2 Aug 2013 02:30:10 GMT",
"version": "v1"
}
] | 2014-03-31 | [
[
"Fromholz",
"Pierre",
""
],
[
"Poisson",
"Eric",
""
],
[
"Will",
"Clifford M.",
""
]
] | Every general relativity textbook emphasizes that coordinates have no physical meaning. Nevertheless, a coordinate choice must be made in order to carry out real calculations, and that choice can make the difference between a calculation that is simple and one that is a mess. We give a concrete illustration of the maxi... |
1008.3583 | Elias Gravanis | Elias Gravanis | Shock waves and Birkhoff's theorem in Lovelock gravity | 9 pages, no figures, clarifying changes made in the text of section
III and references added | Phys.Rev.D82:104024,2010 | 10.1103/PhysRevD.82.104024 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Spherically symmetric shock waves are shown to exist in Lovelock gravity.
They amount to a change of branch of the spherically symmetric solutions across
a null hypersurface. The implications of their existence for the status of
Birkhoff's theorem in the theory is discussed.
| [
{
"created": "Fri, 20 Aug 2010 22:28:30 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Sep 2010 23:20:02 GMT",
"version": "v2"
}
] | 2010-12-13 | [
[
"Gravanis",
"Elias",
""
]
] | Spherically symmetric shock waves are shown to exist in Lovelock gravity. They amount to a change of branch of the spherically symmetric solutions across a null hypersurface. The implications of their existence for the status of Birkhoff's theorem in the theory is discussed. |
gr-qc/0601126 | Paulo Moreira Costa | Paulo da Costa Moreira | Quantification of electrical charges in Kaluza Klein theory without
strings of Dirac | 11 pages, no figures, LATEX (of PCTEX 3.2), change of content | null | null | null | gr-qc | null | It is proposed a formalism of quantification of the electric charges in the
Kaluza Klein theory of five dimensions and a explanation of the cause of the
variation of the electromagnetic fine-structure constant in cosmological
times.There is a formalism that eliminates the problem that impeached the KK
theory to compl... | [
{
"created": "Sat, 28 Jan 2006 21:29:06 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Mar 2006 20:53:30 GMT",
"version": "v2"
},
{
"created": "Wed, 19 Apr 2006 22:10:12 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"Moreira",
"Paulo da Costa",
""
]
] | It is proposed a formalism of quantification of the electric charges in the Kaluza Klein theory of five dimensions and a explanation of the cause of the variation of the electromagnetic fine-structure constant in cosmological times.There is a formalism that eliminates the problem that impeached the KK theory to complet... |
gr-qc/9509026 | Donald Marolf | J. David Brown and Donald Marolf | On Relativistic Material Reference Systems | 18 pages, ReVTeX | Phys.Rev. D53 (1996) 1835-1844 | 10.1103/PhysRevD.53.1835 | UCSBTH-95-26, CTMP/012/NCSU | gr-qc | null | This work closes certain gaps in the literature on material reference systems
in general relativity. It is shown that perfect fluids are a special case of
DeWitt's relativistic elastic media and that the velocity--potential formalism
for perfect fluids can be interpreted as describing a perfect fluid coupled to
a fle... | [
{
"created": "Thu, 14 Sep 1995 18:52:22 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Brown",
"J. David",
""
],
[
"Marolf",
"Donald",
""
]
] | This work closes certain gaps in the literature on material reference systems in general relativity. It is shown that perfect fluids are a special case of DeWitt's relativistic elastic media and that the velocity--potential formalism for perfect fluids can be interpreted as describing a perfect fluid coupled to a fleet... |
gr-qc/9504008 | Dieter Maison | Dieter Maison (Max-Planck-Institut f\"ur Physik,
Werner-Heisenberg-Institut) | Non-Universality of Critical Behaviour in Spherically Symmetric
Gravitational Collapse | 6p | Phys.Lett. B366 (1996) 82-84 | 10.1016/0370-2693(95)01381-4 | MPI-PhT/95-28 | gr-qc | null | The aim of the present letter is to explain the `critical behaviour' observed
in numerical studies of spherically symmetric gravitational collaps of a
perfect fluid. A simple expression results for the critical index $\gamma$ of
the black hole mass considered as an order parameter. $\gamma$ turns out to
vary strongly... | [
{
"created": "Wed, 5 Apr 1995 17:54:40 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Maison",
"Dieter",
"",
"Max-Planck-Institut für Physik,\n Werner-Heisenberg-Institut"
]
] | The aim of the present letter is to explain the `critical behaviour' observed in numerical studies of spherically symmetric gravitational collaps of a perfect fluid. A simple expression results for the critical index $\gamma$ of the black hole mass considered as an order parameter. $\gamma$ turns out to vary strongly w... |
1005.1815 | Takahisa Igata | Takahisa Igata, Tatsuhiko Koike, Hideki Ishihara | Constants of Motion for Constrained Hamiltonian Systems: A Particle
around a Charged Rotating Black Hole | 20 pages | Phys.Rev.D83:065027,2011 | 10.1103/PhysRevD.83.065027 | OCU-PHYS 330, AP-GR 76 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss constants of motion of a particle under an external field in a
curved spacetime, taking into account the Hamiltonian constraint which arises
from reparametrization invariance of the particle orbit. As the necessary and
sufficient condition for the existence of a constant of motion, we obtain a set
of equat... | [
{
"created": "Tue, 11 May 2010 12:36:13 GMT",
"version": "v1"
}
] | 2011-05-10 | [
[
"Igata",
"Takahisa",
""
],
[
"Koike",
"Tatsuhiko",
""
],
[
"Ishihara",
"Hideki",
""
]
] | We discuss constants of motion of a particle under an external field in a curved spacetime, taking into account the Hamiltonian constraint which arises from reparametrization invariance of the particle orbit. As the necessary and sufficient condition for the existence of a constant of motion, we obtain a set of equatio... |
0711.1722 | Stoytcho Yazadjiev | Stefan Hollands, Stoytcho Yazadjiev | A Uniqueness theorem for 5-dimensional Einstein-Maxwell black holes | Latex, 13pp, no figures | Class.Quant.Grav.25:095010,2008 | 10.1088/0264-9381/25/9/095010 | null | gr-qc | null | In a previous paper arXiv:0707.2775 [gr-qc] we showed that stationary
asymptotically flat vacuum black hole solutions in 5 dimensions with two
commuting axial Killing fields can be completely characterized by their mass,
angular momentum, a set of real moduli, and a set of winding numbers. In this
paper we generalize... | [
{
"created": "Mon, 12 Nov 2007 08:07:31 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Hollands",
"Stefan",
""
],
[
"Yazadjiev",
"Stoytcho",
""
]
] | In a previous paper arXiv:0707.2775 [gr-qc] we showed that stationary asymptotically flat vacuum black hole solutions in 5 dimensions with two commuting axial Killing fields can be completely characterized by their mass, angular momentum, a set of real moduli, and a set of winding numbers. In this paper we generalize o... |
2311.02876 | Indra Kumar Banerjee | Indra Kumar Banerjee, Ujjal Kumar Dey | Gravitational Wave Probe of Primordial Black Hole Origin via
Superradiance | 18 pages, 8 figures, 1 table; slight change in the title; minor
updates in the discussion; references added; matches published version | JCAP 04 (2024) 049 | 10.1088/1475-7516/2024/04/049 | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article we have used stochastic gravitational wave background as a
unique probe to gain insight regarding the creation mechanism of primordial
black holes. We have considered the cumulative gravitational wave background
which consists of the primary part coming from the creation mechanism of the
primordial bl... | [
{
"created": "Mon, 6 Nov 2023 05:11:26 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Apr 2024 18:07:57 GMT",
"version": "v2"
}
] | 2024-04-19 | [
[
"Banerjee",
"Indra Kumar",
""
],
[
"Dey",
"Ujjal Kumar",
""
]
] | In this article we have used stochastic gravitational wave background as a unique probe to gain insight regarding the creation mechanism of primordial black holes. We have considered the cumulative gravitational wave background which consists of the primary part coming from the creation mechanism of the primordial blac... |
0902.1288 | J. Brian Pitts | J. Brian Pitts | Gauge-Invariant Localization of Infinitely Many Gravitational Energies
from All Possible Auxiliary Structures | Added section on spinors without a tetrad, added section on errors
inspired by supposed nonlocalization of energy, added references, minor
amplifications and clarifications. Forthcoming in_General Relativity and
Gravitation_ | Gen.Rel.Grav.42:601-622,2010 | 10.1007/s10714-009-0874-y | null | gr-qc astro-ph.CO hep-th physics.hist-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The problem of finding a covariant expression for the distribution and
conservation of gravitational energy-momentum dates to the 1910s. A suitably
covariant infinite-component localization is displayed, reflecting Bergmann's
realization that there are infinitely many conserved gravitational
energy-momenta. Initially... | [
{
"created": "Sun, 8 Feb 2009 04:24:16 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jul 2009 21:31:22 GMT",
"version": "v2"
}
] | 2014-10-10 | [
[
"Pitts",
"J. Brian",
""
]
] | The problem of finding a covariant expression for the distribution and conservation of gravitational energy-momentum dates to the 1910s. A suitably covariant infinite-component localization is displayed, reflecting Bergmann's realization that there are infinitely many conserved gravitational energy-momenta. Initially u... |
1102.2393 | Cecilia Chirenti | F. M. Araujo and C. B. M. H. Chirenti | Newtonian and relativistic polytropes | 8 pages, 2 figure. Prepared for the proceedings of the 4th School on
Cosmic Rays and Astrophysics, Santo Andre, Brazil, August 25-September 3,
2010 | PoS CRASchool2010:020,2010 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The equation of state inside very compact objects like neutron stars is still
largely unkown. Even though a lot progress has been made in recent years to
develop the so-called realistic equations of state, a lot of insight can be
gained by using polytropic equations of state to integrate the stellar
equations of stru... | [
{
"created": "Fri, 11 Feb 2011 17:08:11 GMT",
"version": "v1"
}
] | 2011-06-10 | [
[
"Araujo",
"F. M.",
""
],
[
"Chirenti",
"C. B. M. H.",
""
]
] | The equation of state inside very compact objects like neutron stars is still largely unkown. Even though a lot progress has been made in recent years to develop the so-called realistic equations of state, a lot of insight can be gained by using polytropic equations of state to integrate the stellar equations of struct... |
2305.11653 | Pierre Auclair | Pierre Auclair, Stanislav Babak, Hippolyte Quelquejay Leclere,
Dani\`ele A.Steer | Cosmic string bursts in LISA | 7 pages, 4 figures | Phys. Rev. D 108, 043519 (2023) | 10.1103/PhysRevD.108.043519 | null | gr-qc astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cosmic string cusps are sources of short-lived, linearly polarised
gravitational wave bursts which can be searched for in gravitational wave
detectors. We assess the capability of LISA to detect these bursts using the
latest LISA configuration and operational assumptions. For such short bursts,
we verify that LISA ca... | [
{
"created": "Fri, 19 May 2023 13:08:18 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Sep 2023 09:08:53 GMT",
"version": "v2"
}
] | 2023-09-06 | [
[
"Auclair",
"Pierre",
""
],
[
"Babak",
"Stanislav",
""
],
[
"Leclere",
"Hippolyte Quelquejay",
""
],
[
"Steer",
"Danièle A.",
""
]
] | Cosmic string cusps are sources of short-lived, linearly polarised gravitational wave bursts which can be searched for in gravitational wave detectors. We assess the capability of LISA to detect these bursts using the latest LISA configuration and operational assumptions. For such short bursts, we verify that LISA can ... |
gr-qc/0602017 | H.-J. Schmidt | H.-J. Schmidt | Fourth order gravity: equations, history, and applications to cosmology | 51 pages, LaTeX, no figure, lecture for 42nd Karpacz Winter School
6.-11.2.06, references 99-109 and related comments are added | ECONFC0602061:12,2006; Int.J.Geom.Meth.Mod.Phys.4:209-248,2007 | 10.1142/S0219887807001977 | null | gr-qc | null | The field equations following from a Lagrangian L(R) will be deduced and
solved for special cases. If L is a non-linear function of the curvature
scalar, then these equations are of fourth order in the metric. In the
introduction we present the history of these equations beginning with the paper
of H. Weyl from 1918,... | [
{
"created": "Sun, 5 Feb 2006 10:11:58 GMT",
"version": "v1"
},
{
"created": "Sat, 25 Mar 2006 11:51:18 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Schmidt",
"H. -J.",
""
]
] | The field equations following from a Lagrangian L(R) will be deduced and solved for special cases. If L is a non-linear function of the curvature scalar, then these equations are of fourth order in the metric. In the introduction we present the history of these equations beginning with the paper of H. Weyl from 1918, w... |
1806.04076 | Sudan Hansraj | Sudan Hansraj and Njabulo Mkhize | Qualitative analysis of the Tolman metrics within the unimodular
framework | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the behaviour of the Tolman metrics within the formalism of
the trace-free (or unimodular) gravity. While this approach is similar to the
standard Einstein field equations, some subtlety arises. The effective number
of independent field equations is reduced by one on account of the density and
pressure... | [
{
"created": "Mon, 11 Jun 2018 15:58:56 GMT",
"version": "v1"
}
] | 2018-06-12 | [
[
"Hansraj",
"Sudan",
""
],
[
"Mkhize",
"Njabulo",
""
]
] | We investigate the behaviour of the Tolman metrics within the formalism of the trace-free (or unimodular) gravity. While this approach is similar to the standard Einstein field equations, some subtlety arises. The effective number of independent field equations is reduced by one on account of the density and pressure a... |
1410.0694 | Miguel Zilh\~ao | Miguel Zilh\~ao, Vitor Cardoso, Carlos Herdeiro, Luis Lehner, Ulrich
Sperhake | Testing the nonlinear stability of Kerr-Newman black holes | 8 pages, 4 figures. v2: added references and minor updates to text;
to appear in PRD | null | 10.1103/PhysRevD.90.124088 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nonlinear stability of Kerr-Newman black holes (KNBHs) is investigated by
performing numerical simulations within the full Einstein-Maxwell theory. We
take as initial data a KNBH with mass $M$, angular momentum to mass ratio $a$
and charge $Q$. Evolutions are performed to scan this parameter space within
the inte... | [
{
"created": "Thu, 2 Oct 2014 20:00:52 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Dec 2014 21:17:19 GMT",
"version": "v2"
}
] | 2015-06-23 | [
[
"Zilhão",
"Miguel",
""
],
[
"Cardoso",
"Vitor",
""
],
[
"Herdeiro",
"Carlos",
""
],
[
"Lehner",
"Luis",
""
],
[
"Sperhake",
"Ulrich",
""
]
] | The nonlinear stability of Kerr-Newman black holes (KNBHs) is investigated by performing numerical simulations within the full Einstein-Maxwell theory. We take as initial data a KNBH with mass $M$, angular momentum to mass ratio $a$ and charge $Q$. Evolutions are performed to scan this parameter space within the interv... |
gr-qc/0612040 | Kouji Nakamura | Kouji Nakamura | Short note on second-order gauge-invariant cosmological perturbation
theory | 4 pages, no figure, LaTeX, Prepared for the proceedings of the 16th
workshop on general relativity and gravitation in Japan (Niigata, Japan) | null | null | null | gr-qc | null | The second order perturbations in Friedmann-Robertson-Walker universe filled
with a perfect fluid are completely formulated in the gauge invariant manner
without any gauge fixing. All components of the Einstein equations are derived
neglecting the first order vector and tensor modes. These equations imply that
the te... | [
{
"created": "Thu, 7 Dec 2006 04:35:36 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Nakamura",
"Kouji",
""
]
] | The second order perturbations in Friedmann-Robertson-Walker universe filled with a perfect fluid are completely formulated in the gauge invariant manner without any gauge fixing. All components of the Einstein equations are derived neglecting the first order vector and tensor modes. These equations imply that the tens... |
gr-qc/0609039 | Yifu Cai | Yi-Fu Cai, Hong Li, Yun-Song Piao and Xinmin Zhang | Cosmic Duality in Quintom Universe | 5 pages, 3 figures | Phys.Lett.B646:141-144,2007 | 10.1016/j.physletb.2007.01.027 | null | gr-qc astro-ph | null | In this paper we study the duality in two-field Quintom models of Dark
Energy. We find that an expanding universe dominated by Quintom-A field is dual
to a contracting universe with Quintom-B field.
| [
{
"created": "Tue, 12 Sep 2006 09:58:51 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Sep 2006 07:35:01 GMT",
"version": "v2"
},
{
"created": "Sun, 5 Nov 2006 13:07:17 GMT",
"version": "v3"
},
{
"created": "Wed, 6 Dec 2006 14:25:50 GMT",
"version": "v4"
},
{
"cre... | 2008-11-26 | [
[
"Cai",
"Yi-Fu",
""
],
[
"Li",
"Hong",
""
],
[
"Piao",
"Yun-Song",
""
],
[
"Zhang",
"Xinmin",
""
]
] | In this paper we study the duality in two-field Quintom models of Dark Energy. We find that an expanding universe dominated by Quintom-A field is dual to a contracting universe with Quintom-B field. |
gr-qc/0412035 | Daniele Oriti | Daniele Oriti | The Feynman propagator for quantum gravity: spin foams, proper time,
orientation, causality and timeless-ordering | 8 pages; to appear in the Proceedings of the DICE 2004 Workshop "From
Decoherence and Emergent Classicality to Emergent Quantum Mechanics" | Braz.J.Phys. 35 (2005) 481-488 | 10.1590/S0103-97332005000300019 | DAMTP-2004-145 | gr-qc | null | We discuss the notion of causality in Quantum Gravity in the context of
sum-over-histories approaches, in the absence therefore of any background time
parameter. In the spin foam formulation of Quantum Gravity, we identify the
appropriate causal structure in the orientation of the spin foam 2-complex and
the data tha... | [
{
"created": "Wed, 8 Dec 2004 12:54:55 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Oriti",
"Daniele",
""
]
] | We discuss the notion of causality in Quantum Gravity in the context of sum-over-histories approaches, in the absence therefore of any background time parameter. In the spin foam formulation of Quantum Gravity, we identify the appropriate causal structure in the orientation of the spin foam 2-complex and the data that ... |
1307.3937 | Timothy Hodgkinson | Edmund A. Chadwick, Timothy F. Hodgkinson and Graham S. McDonald | Gravitational theoretical development supporting MOND | 10 pages to appear in Physical Review D, vol. 88, July 2013.
Copyright APS. http://prd.aps.org/ | null | 10.1103/PhysRevD.88.024036 | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Conformal geometry is considered within a general relativistic framework. An
invariant distant for proper time is defined and a parallel displacement is
applied in the distorted space-time, modifying Einstein's equation
appropriately. A particular solution is introduced for the covariant
acceleration potential that m... | [
{
"created": "Mon, 15 Jul 2013 13:46:34 GMT",
"version": "v1"
}
] | 2015-06-16 | [
[
"Chadwick",
"Edmund A.",
""
],
[
"Hodgkinson",
"Timothy F.",
""
],
[
"McDonald",
"Graham S.",
""
]
] | Conformal geometry is considered within a general relativistic framework. An invariant distant for proper time is defined and a parallel displacement is applied in the distorted space-time, modifying Einstein's equation appropriately. A particular solution is introduced for the covariant acceleration potential that mat... |
1704.06951 | Bin Wu | Bin Wu, Xin Hao, Liu Zhao | Time evolving fluid from Vaidya spacetime | 14 pages | Phys. Rev. D 96, 046010 (2017) | 10.1103/PhysRevD.96.046010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A time evolving fluid system is constructed on a timelike boundary
hypersurface at finite cutoff in Vaidya spacetime. The approach used to
construct the fluid equations is a direct extension of the ordinary
Gravity/Fluid correspondence under the constrained fluctuation obeying Petrov
type I conditions. The explicit r... | [
{
"created": "Sun, 23 Apr 2017 17:25:46 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Wu",
"Bin",
""
],
[
"Hao",
"Xin",
""
],
[
"Zhao",
"Liu",
""
]
] | A time evolving fluid system is constructed on a timelike boundary hypersurface at finite cutoff in Vaidya spacetime. The approach used to construct the fluid equations is a direct extension of the ordinary Gravity/Fluid correspondence under the constrained fluctuation obeying Petrov type I conditions. The explicit rel... |
2106.03966 | David Tegankong | A. T. Lassiye and D. Tegankong | Future $T^2$ symmetry Einstein-Vlasov-Scalar field system | 27 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove local existence of solutions in the case of cosmological models for
the Einstein-Vlasov-scalar field system with $T^2$ symmetry in expanding
direction. This proof is based on short-time existence theorems for the partial
differential equations resulting from the Einstein-Vlasov-Scalar Field system
in areal c... | [
{
"created": "Mon, 7 Jun 2021 21:01:16 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Jun 2021 12:20:04 GMT",
"version": "v2"
}
] | 2021-06-16 | [
[
"Lassiye",
"A. T.",
""
],
[
"Tegankong",
"D.",
""
]
] | We prove local existence of solutions in the case of cosmological models for the Einstein-Vlasov-scalar field system with $T^2$ symmetry in expanding direction. This proof is based on short-time existence theorems for the partial differential equations resulting from the Einstein-Vlasov-Scalar Field system in areal coo... |
1903.03204 | Amit Kundu | Amit Kundu and Prasenjit Paul | Cosmological Correlations in Power Law Inflation models | null | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scalar field with non-minimal coupling to curvature scalar is studied in
Robertson-Walker background. The infrared limit of two point function, and, in
turn, of the energy-momentum tensor of scalar field have been considered in the
power law inflation model. In this limit, within the perfect fluid model,
consistent e... | [
{
"created": "Tue, 5 Mar 2019 20:24:30 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Jul 2020 12:39:19 GMT",
"version": "v2"
}
] | 2020-07-16 | [
[
"Kundu",
"Amit",
""
],
[
"Paul",
"Prasenjit",
""
]
] | Scalar field with non-minimal coupling to curvature scalar is studied in Robertson-Walker background. The infrared limit of two point function, and, in turn, of the energy-momentum tensor of scalar field have been considered in the power law inflation model. In this limit, within the perfect fluid model, consistent evo... |
1201.1923 | Carlos O. Lousto | Carlos O. Lousto, Yosef Zlochower, Massimo Dotti, Marta Volonteri | Gravitational Recoil From Accretion-Aligned Black-Hole Binaries | 17 pages, 10 tables, 14 figures, revtex 4. Accepted for publication
in PRD | Phys. Rev. D 85, 084015 (2012) | 10.1103/PhysRevD.85.084015 | null | gr-qc astro-ph.CO astro-ph.GA astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the newly discovered "hangup-kick" effect, which greatly amplifies
the recoil for configuration with partial spin- orbital-angular momentum
alignment, by studying a set of 48 new simulations of equal-mass, spinning
black-hole binaries. We propose a phenomenological model for the recoil that
takes this new ... | [
{
"created": "Mon, 9 Jan 2012 21:07:57 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Mar 2012 20:22:46 GMT",
"version": "v2"
}
] | 2012-05-31 | [
[
"Lousto",
"Carlos O.",
""
],
[
"Zlochower",
"Yosef",
""
],
[
"Dotti",
"Massimo",
""
],
[
"Volonteri",
"Marta",
""
]
] | We explore the newly discovered "hangup-kick" effect, which greatly amplifies the recoil for configuration with partial spin- orbital-angular momentum alignment, by studying a set of 48 new simulations of equal-mass, spinning black-hole binaries. We propose a phenomenological model for the recoil that takes this new ef... |
gr-qc/9211019 | null | Lee Smolin | What can we learn from the study of non-perturbative quantum general
relativity? | LATEX 37 pages, no figures | null | null | null | gr-qc | null | I attempt to answer the question of the title by giving an annotated list of
the major results achieved, over the last six years, in the program to
construct quantum general relativity using the Ashtekar variables and the loop
representation. A summary of the key open problems is also included. Also
included are expo... | [
{
"created": "Sun, 15 Nov 1992 02:23:00 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Smolin",
"Lee",
""
]
] | I attempt to answer the question of the title by giving an annotated list of the major results achieved, over the last six years, in the program to construct quantum general relativity using the Ashtekar variables and the loop representation. A summary of the key open problems is also included. Also included are exposi... |
1111.2215 | Xiangdong Zhang | Xiangdong Zhang and Yongge Ma | Loop Quantum Brans-Dicke Theory | 4 pages, to appear in Journal of Physics: Conference Series (JPCS) | J. Phys.: Conf. Ser. 360, 012055 (2012) | 10.1088/1742-6596/360/1/012055 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The loop quantization of Brans-Dicke theory (with coupling parameter
$\omega\neq-3/2$) is studied. In the geometry-dynamical formalism, the
canonical structure and constraint algebra of this theory are similar to those
of general relativity coupled with a scalar field. The connection dynamical
formalism of the Brans-... | [
{
"created": "Wed, 9 Nov 2011 14:22:44 GMT",
"version": "v1"
}
] | 2012-05-18 | [
[
"Zhang",
"Xiangdong",
""
],
[
"Ma",
"Yongge",
""
]
] | The loop quantization of Brans-Dicke theory (with coupling parameter $\omega\neq-3/2$) is studied. In the geometry-dynamical formalism, the canonical structure and constraint algebra of this theory are similar to those of general relativity coupled with a scalar field. The connection dynamical formalism of the Brans-Di... |
1006.4920 | Majid Mohsenzadeh ganji | M. Mohsenzadeh and E. Yusofi | Bulk Scale Factor at Very Early Universe | 7 pages, October 2011 | Int.J.Theor.Phys.50:430-435,2011 | 10.1007/s10773-010-0549-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we propose a higher dimensional Cosmology based on FRW model
and brane-world scenario. We consider the warp factor in the brane-world
scenario as a scale factor in 5-dimensional generalized FRW metric, which is
called as bulk scale factor, and obtain the evolution of it with space-like and
time-like ext... | [
{
"created": "Fri, 25 Jun 2010 07:40:23 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Aug 2010 20:47:49 GMT",
"version": "v2"
},
{
"created": "Tue, 24 Aug 2010 20:44:30 GMT",
"version": "v3"
},
{
"created": "Wed, 13 Apr 2011 16:15:27 GMT",
"version": "v4"
}
] | 2011-04-22 | [
[
"Mohsenzadeh",
"M.",
""
],
[
"Yusofi",
"E.",
""
]
] | In this paper we propose a higher dimensional Cosmology based on FRW model and brane-world scenario. We consider the warp factor in the brane-world scenario as a scale factor in 5-dimensional generalized FRW metric, which is called as bulk scale factor, and obtain the evolution of it with space-like and time-like extra... |
1603.00352 | Ganim Gecim | Ganim Gecim and Yusuf Sucu | Dirac field as a source of the inflation in 2+1 dimensional Teleparallel
gravity | 15 pages, final version to appear in Adv. High Energy Phys | Adv. High Energy Phys. (2017) 2056131 (9 pages) | 10.1155/2017/2056131 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study early-time inflation and late-time acceleration of
the universe by non-minimally coupling the Dirac field with torsion in the
spatially flat Friedman-Robertson-Walker (FRW) cosmological model background.
The results obtained by the Noether symmetry approach with and without a gauge
term are co... | [
{
"created": "Tue, 1 Mar 2016 16:49:15 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Mar 2016 16:02:37 GMT",
"version": "v2"
},
{
"created": "Mon, 23 Jan 2017 15:34:12 GMT",
"version": "v3"
}
] | 2017-02-24 | [
[
"Gecim",
"Ganim",
""
],
[
"Sucu",
"Yusuf",
""
]
] | In this paper, we study early-time inflation and late-time acceleration of the universe by non-minimally coupling the Dirac field with torsion in the spatially flat Friedman-Robertson-Walker (FRW) cosmological model background. The results obtained by the Noether symmetry approach with and without a gauge term are comp... |
2207.12466 | Eric Lescano | Cecilia Bejarano and Eric Lescano | ${\cal N}=1$ supersymmetry in $4D$ gravity with torsion and
non-metricity | 6 pages | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the inclusion of fermionic degrees of freedom and ${\cal N}=1$
supersymmetry in 4-dimensional manifolds with arbitrary torsion and
non-metricity tensors deforming the connection. We inspect the closure of local
diffeomorphism, Lorentz and supersymmetric transformations on the vielbein and
gravitino at leadin... | [
{
"created": "Mon, 25 Jul 2022 18:31:39 GMT",
"version": "v1"
}
] | 2022-07-27 | [
[
"Bejarano",
"Cecilia",
""
],
[
"Lescano",
"Eric",
""
]
] | We study the inclusion of fermionic degrees of freedom and ${\cal N}=1$ supersymmetry in 4-dimensional manifolds with arbitrary torsion and non-metricity tensors deforming the connection. We inspect the closure of local diffeomorphism, Lorentz and supersymmetric transformations on the vielbein and gravitino at leading ... |
2301.07641 | Eduardo Velasco-Aja Mr. | Enrique \'Alvarez and Eduardo Velasco-Aja | A Primer on Unimodular Gravity | 40 pages, Invited chapter for "Handbook of Quantum Gravity" (Eds. C.
Bambi, L. Modesto, and I. L. Shapiro, Springer 2023). Minor typos corrected | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by-nc-nd/4.0/ | This chapter provides an introduction to Unimodular Gravity both at the
classical and quantum level, discussing the r\^ole it might play in the partial
solution of the Cosmological Constant problem. The main objective of this work
is to serve as a conceptual introduction to Unimodular gravity without
disregarding com... | [
{
"created": "Wed, 18 Jan 2023 16:39:42 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jan 2023 15:08:25 GMT",
"version": "v2"
},
{
"created": "Wed, 1 Feb 2023 22:33:11 GMT",
"version": "v3"
},
{
"created": "Mon, 13 Feb 2023 10:22:24 GMT",
"version": "v4"
},
{
"cr... | 2023-03-24 | [
[
"Álvarez",
"Enrique",
""
],
[
"Velasco-Aja",
"Eduardo",
""
]
] | This chapter provides an introduction to Unimodular Gravity both at the classical and quantum level, discussing the r\^ole it might play in the partial solution of the Cosmological Constant problem. The main objective of this work is to serve as a conceptual introduction to Unimodular gravity without disregarding compu... |
1307.2423 | Joel Weller | Joel M. Weller | Fermion condensate from torsion in the reheating era after inflation | Minor clarifications, typos corrected. Matches version published in
PRD | Phys. Rev. D 88, 083511 (2013) | 10.1103/PhysRevD.88.083511 | KA-TP-16-2013 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The inclusion of Dirac fermions in Einstein-Cartan gravity leads to a
four-fermion interaction mediated by non-propagating torsion, which can allow
for the formation of a Bardeen-Cooper-Schrieffer condensate. By considering a
simplified model in 2+1 spacetime dimensions, we show that even without an
excess of fermion... | [
{
"created": "Tue, 9 Jul 2013 12:33:05 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Oct 2013 20:51:03 GMT",
"version": "v2"
}
] | 2013-10-30 | [
[
"Weller",
"Joel M.",
""
]
] | The inclusion of Dirac fermions in Einstein-Cartan gravity leads to a four-fermion interaction mediated by non-propagating torsion, which can allow for the formation of a Bardeen-Cooper-Schrieffer condensate. By considering a simplified model in 2+1 spacetime dimensions, we show that even without an excess of fermions ... |
1811.01371 | Emil Akhmedov | E. T. Akhmedov, P. A. Anempodistov and I. D. Ivanova | Corrections to the Aretakis type behaviour of the metric due to an
infalling particle | 7 pages, title is changed, clarifications are added | Phys. Rev. D 99, 044018 (2019) | 10.1103/PhysRevD.99.044018 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an extremal Reissner-Nordstr\"{o}m black hole perturbed by a
neutral massive point particle, which falls in radially. We study the linear
metric perturbation in the vicinity of the black hole and find that the $l=0$
and $l=1$ spherical modes of the metric oscillate rather than decay.
| [
{
"created": "Sun, 4 Nov 2018 14:03:18 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Jan 2019 10:48:55 GMT",
"version": "v2"
}
] | 2019-02-20 | [
[
"Akhmedov",
"E. T.",
""
],
[
"Anempodistov",
"P. A.",
""
],
[
"Ivanova",
"I. D.",
""
]
] | We consider an extremal Reissner-Nordstr\"{o}m black hole perturbed by a neutral massive point particle, which falls in radially. We study the linear metric perturbation in the vicinity of the black hole and find that the $l=0$ and $l=1$ spherical modes of the metric oscillate rather than decay. |
1303.1123 | Juan Antonio Morales Lladosa | Ramon Lapiedra and Juan Antonio Morales-Lladosa | Intrinsic energy of Lema\^itre-Tolman-Bondi models and cosmological
implications | 18 pages; no figures; corrected and enlarged version | Physical Review D {\bf 89}, 064033 (2014) | 10.1103/PhysRevD.89.064033 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, some Lema{\^{\i}}tre-Tolman-Bondi metrics have been considered as
models alternative to the dark energy within the
Friedmann-Lema{\^{\i}}tre-Robertson-Walker universes. The vanishing of the
intrinsic energy of these metrics is examined since such a vanishing, in the
present case and in general, could be int... | [
{
"created": "Tue, 5 Mar 2013 18:15:38 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Apr 2014 08:49:16 GMT",
"version": "v2"
}
] | 2014-04-04 | [
[
"Lapiedra",
"Ramon",
""
],
[
"Morales-Lladosa",
"Juan Antonio",
""
]
] | Recently, some Lema{\^{\i}}tre-Tolman-Bondi metrics have been considered as models alternative to the dark energy within the Friedmann-Lema{\^{\i}}tre-Robertson-Walker universes. The vanishing of the intrinsic energy of these metrics is examined since such a vanishing, in the present case and in general, could be inter... |
1012.2822 | Lorenzo Iorio | Lorenzo Iorio, Matteo Luca Ruggiero | Horava-Lifshitz gravity: tighter constraints for the Kehagias-Sfetsos
solution from new solar system data | LaTex2e, 15 pages, 1 table, 3 figures, 31 references. Version
matching the one at press in International Journal of Modern Physics D
(IJMPD) | Int.J.Mod.Phys.D20:1079-1093,2011 | 10.1142/S0218271811019281 | null | gr-qc astro-ph.EP physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analytically work out the perturbation induced by the Kehagias-Sfetsos
(KS) space-time solution of the Horava-Lifshitz (HL) modified gravity at long
distances on the two-body range for a pair of test particles A and B orbiting
the same mass M. We apply our results to the most recently obtained
range-residuals \del... | [
{
"created": "Mon, 13 Dec 2010 18:19:34 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Dec 2010 08:22:05 GMT",
"version": "v2"
},
{
"created": "Mon, 27 Dec 2010 15:18:07 GMT",
"version": "v3"
},
{
"created": "Fri, 4 Mar 2011 14:42:55 GMT",
"version": "v4"
},
{
"cr... | 2015-03-17 | [
[
"Iorio",
"Lorenzo",
""
],
[
"Ruggiero",
"Matteo Luca",
""
]
] | We analytically work out the perturbation induced by the Kehagias-Sfetsos (KS) space-time solution of the Horava-Lifshitz (HL) modified gravity at long distances on the two-body range for a pair of test particles A and B orbiting the same mass M. We apply our results to the most recently obtained range-residuals \delta... |
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