id stringlengths 9 13 | submitter stringlengths 1 64 ⌀ | authors stringlengths 5 22.9k | title stringlengths 4 245 | comments stringlengths 1 548 ⌀ | journal-ref stringlengths 4 362 ⌀ | doi stringlengths 12 82 ⌀ | report-no stringlengths 2 281 ⌀ | categories stringclasses 793
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2404.03174 | Sergio Mendoza | Sergio Mendoza and Milton Jair Santiba\~nez-Armenta | A comparison between the deflection angles of massive and massless
particles in the Shchwarzschild space-time and their consequences on black
hole shadows | 7 pages, 7 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We present comparisons of the deflection angles of massless and massive
particles in the Schwarzschild space-time. For the case of photons in a general
static space-time, we construct a spatial 3D equation of motion for their path
that leads to an implicit formula for the deflection angle. We then compare our
results... | [
{
"created": "Thu, 4 Apr 2024 03:17:01 GMT",
"version": "v1"
}
] | 2024-04-05 | [
[
"Mendoza",
"Sergio",
""
],
[
"Santibañez-Armenta",
"Milton Jair",
""
]
] | We present comparisons of the deflection angles of massless and massive particles in the Schwarzschild space-time. For the case of photons in a general static space-time, we construct a spatial 3D equation of motion for their path that leads to an implicit formula for the deflection angle. We then compare our results w... |
0907.1411 | Ilya Lvovich Shapiro | Valeri P. Frolov and Ilya L. Shapiro | Black Holes in Higher Dimensional Gravity Theory with Quadratic in
Curvature Corrections | 12 pages, 4 figures. A few references added, some details added to
better illustrate the result. Version accepted in Physical Review D | Phys.Rev.D80:044034,2009 | 10.1103/PhysRevD.80.044034 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Static spherically symmetric black holes are discussed in the framework of
higher dimensional gravity with quadratic in curvature terms. Such terms
naturally arise as a result of quantum corrections induced by quantum fields
propagating in the gravitational background. We focus our attention on the
correction of the ... | [
{
"created": "Thu, 9 Jul 2009 12:58:58 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Jul 2009 10:21:31 GMT",
"version": "v2"
},
{
"created": "Wed, 12 Aug 2009 00:01:35 GMT",
"version": "v3"
}
] | 2009-11-06 | [
[
"Frolov",
"Valeri P.",
""
],
[
"Shapiro",
"Ilya L.",
""
]
] | Static spherically symmetric black holes are discussed in the framework of higher dimensional gravity with quadratic in curvature terms. Such terms naturally arise as a result of quantum corrections induced by quantum fields propagating in the gravitational background. We focus our attention on the correction of the fo... |
2303.05298 | Vincenzo Mariani | Vincenzo Mariani, Agn\`es Fienga, Olivier Minazzoli | Testing the mass of the graviton with Bayesian planetary numerical
ephemerides B-INPOP | 29 pages without appendix and 45 with appendices | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use MCMC to sample the posterior distribution of the mass of the graviton
-- assumed here to be manifest through a Yukawa suppression of the Newtonian
potential -- by using INPOP planetary ephemerides. The main technical
difficulty is the lack of analytical formulation for the forward problem and
the cost in term ... | [
{
"created": "Thu, 9 Mar 2023 14:46:02 GMT",
"version": "v1"
}
] | 2023-03-10 | [
[
"Mariani",
"Vincenzo",
""
],
[
"Fienga",
"Agnès",
""
],
[
"Minazzoli",
"Olivier",
""
]
] | We use MCMC to sample the posterior distribution of the mass of the graviton -- assumed here to be manifest through a Yukawa suppression of the Newtonian potential -- by using INPOP planetary ephemerides. The main technical difficulty is the lack of analytical formulation for the forward problem and the cost in term of... |
1109.2692 | Abdollah Refaei | A. Refaei, M. V. Takook | QED effective action in Krein space quantization | 15 pages, Accepted for publication in Phys.Lett.B | Phys.Lett. B 704 (2011) 326-333 | 10.1016/j.physletb.2011.09.013 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The one-loop effective action of QED is calculated by the Schwinger method in
Krein space quantization. We show that the effective action is naturally fnite
and regularized. It also coincides with the renormalized solution which was
derived by Schwinger.
| [
{
"created": "Tue, 13 Sep 2011 07:33:40 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Refaei",
"A.",
""
],
[
"Takook",
"M. V.",
""
]
] | The one-loop effective action of QED is calculated by the Schwinger method in Krein space quantization. We show that the effective action is naturally fnite and regularized. It also coincides with the renormalized solution which was derived by Schwinger. |
1605.09054 | Arvin Ravanpak | H. Farajollahi, A. Ravanpak | A 5D Holographic Dark Energy in DGP-Brane Cosmology | null | Astrophys. Space Sci., 349, 961-966, (2014) | 10.1007/s10509-013-1598-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is aimed at investigating a 5D holographic dark energy in
DGP-BRANE cosmology by employing a combination of Sne Ia, BAO and CMB
observational data to fit the cosmological parameters in the model. We describe
the dynamic of a FRW for the normal branch ($\epsilon$ = +1) of solutions of
the induced gravity br... | [
{
"created": "Sun, 29 May 2016 19:57:25 GMT",
"version": "v1"
},
{
"created": "Sun, 5 Jun 2016 17:38:27 GMT",
"version": "v2"
}
] | 2016-06-08 | [
[
"Farajollahi",
"H.",
""
],
[
"Ravanpak",
"A.",
""
]
] | This paper is aimed at investigating a 5D holographic dark energy in DGP-BRANE cosmology by employing a combination of Sne Ia, BAO and CMB observational data to fit the cosmological parameters in the model. We describe the dynamic of a FRW for the normal branch ($\epsilon$ = +1) of solutions of the induced gravity bran... |
gr-qc/9407015 | Piso Marius Ioan | Marius. I. Piso | Simplicial Euclidean Relativistic Lagrangian | 9p., TCILatex | null | null | Gravitation Res. Lab. Bucharest preprint GRL-02-94 | gr-qc hep-th | null | The paths on the {\bf R$^3$} real Euclidean manifold are defined as
2-dimensional simplicial strips; points are replaced by 2-simplexes and the
orbits of the action of a one discrete-parameter group on the base manifold
becomes a convex polyhedron attached to a 2-dimensional simplicial complex. The
Lagrangian of a mo... | [
{
"created": "Wed, 13 Jul 1994 17:27:18 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Jan 2003 07:38:56 GMT",
"version": "v2"
}
] | 2009-09-25 | [
[
"Piso",
"Marius. I.",
""
]
] | The paths on the {\bf R$^3$} real Euclidean manifold are defined as 2-dimensional simplicial strips; points are replaced by 2-simplexes and the orbits of the action of a one discrete-parameter group on the base manifold becomes a convex polyhedron attached to a 2-dimensional simplicial complex. The Lagrangian of a movi... |
2405.12314 | Shahram Jalalzadeh | S. Jalalzadeh, H. Moradpour, and H. Tebyanian | Holographic vacuum energy regularization and corrected entropy of de
Sitter space | 16 pages, 1 figure | null | 10.1088/1361-6382/ad5eed | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We propose that the spectrum of the surface area of the apparent horizon (AH)
of de Sitter (dS) spacetime leads to corrected temperature and entropy of the
dS spacetime, offering new insights into its thermodynamic properties. This is
done by employing the spectrum of the AH radius, acquired from the
Wheeler--DeWitt ... | [
{
"created": "Mon, 20 May 2024 18:25:31 GMT",
"version": "v1"
}
] | 2024-07-08 | [
[
"Jalalzadeh",
"S.",
""
],
[
"Moradpour",
"H.",
""
],
[
"Tebyanian",
"H.",
""
]
] | We propose that the spectrum of the surface area of the apparent horizon (AH) of de Sitter (dS) spacetime leads to corrected temperature and entropy of the dS spacetime, offering new insights into its thermodynamic properties. This is done by employing the spectrum of the AH radius, acquired from the Wheeler--DeWitt (W... |
1805.04739 | Mehrdad Farhoudi Prof. | Nasim Saba and Mehrdad Farhoudi | Noncommutative Universe and Chameleon Field Dynamics | 17 pages, 1 figure | Ann. Phys. 395 (2018) 1-14 | 10.1016/j.aop.2018.05.006 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a noncommutative standard model with a minimal coupling scalar
field and a dynamical deformation between the canonical momenta of its scale
factor and scalar field, and a chameleon model with a non-minimally coupling
scalar field. We indicate that there is a correspondence between these two
models, more s... | [
{
"created": "Sat, 12 May 2018 15:39:32 GMT",
"version": "v1"
}
] | 2018-05-25 | [
[
"Saba",
"Nasim",
""
],
[
"Farhoudi",
"Mehrdad",
""
]
] | We consider a noncommutative standard model with a minimal coupling scalar field and a dynamical deformation between the canonical momenta of its scale factor and scalar field, and a chameleon model with a non-minimally coupling scalar field. We indicate that there is a correspondence between these two models, more spe... |
2301.01855 | Reggie Pantig | Wajiha Javed, Mehak Atique, Reggie C. Pantig, Ali \"Ovg\"un | Weak Deflection Angle, Hawking Radiation and Greybody Bound of
Reissner-Nordstr\"{o}m Black Hole Corrected by Bounce Parameter | 16 pages, 7 figures | Symmetry 2023, 15(1), 148 | 10.3390/sym15010148 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this study, we probe the weak lensing by a Reissner--Nordstr\"{o}m black
hole corrected by bounce parameter in plasma and dark matter mediums. For this,
the optical geometry and the Gibbons--Werner approach are utilized to obtain
the bending angle in the weak field limitations. We examine that the impact of
these ... | [
{
"created": "Thu, 5 Jan 2023 00:05:28 GMT",
"version": "v1"
}
] | 2023-01-06 | [
[
"Javed",
"Wajiha",
""
],
[
"Atique",
"Mehak",
""
],
[
"Pantig",
"Reggie C.",
""
],
[
"Övgün",
"Ali",
""
]
] | In this study, we probe the weak lensing by a Reissner--Nordstr\"{o}m black hole corrected by bounce parameter in plasma and dark matter mediums. For this, the optical geometry and the Gibbons--Werner approach are utilized to obtain the bending angle in the weak field limitations. We examine that the impact of these me... |
gr-qc/9511073 | Leszek Sokolowski | Leszek M. Sokolowski | Universality of Einstein's General Relativity | 17 pages, LaTex, no figures; plenary talk given at the GR14
Conference (Florence, Italy, Aug 1995) | null | null | null | gr-qc | null | Among relativistic theories of gravitation the closest ones to general
relativity are the scalar-tensor ones and these with Lagrangians being any
function f(R) of the curvature scalar. A complete chart of relationships
between these theories and general relativity can be delineated. These theories
are mathematically ... | [
{
"created": "Mon, 27 Nov 1995 16:57:27 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sokolowski",
"Leszek M.",
""
]
] | Among relativistic theories of gravitation the closest ones to general relativity are the scalar-tensor ones and these with Lagrangians being any function f(R) of the curvature scalar. A complete chart of relationships between these theories and general relativity can be delineated. These theories are mathematically (l... |
2309.11198 | Raja Solanki | Sayantan Ghosh, Raja Solanki, P.K. Sahoo | Dynamical system analysis of scalar field cosmology in coincident $f(Q)$
gravity | Comments are welcome | Physics Scripta 99 (2024) 055021 | 10.1088/1402-4896/ad39b5 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this article, we investigate scalar field cosmology in the coincident
$f(Q)$ gravity formalism. We calculate the motion equations of $f(Q)$ gravity
under the flat Friedmann-Lema\^{i}tre-Robertson-Walker background in the
presence of a scalar field. We consider a non-linear $f(Q)$ model, particularly
$f(Q)=-Q+\alph... | [
{
"created": "Wed, 20 Sep 2023 10:31:58 GMT",
"version": "v1"
}
] | 2024-04-12 | [
[
"Ghosh",
"Sayantan",
""
],
[
"Solanki",
"Raja",
""
],
[
"Sahoo",
"P. K.",
""
]
] | In this article, we investigate scalar field cosmology in the coincident $f(Q)$ gravity formalism. We calculate the motion equations of $f(Q)$ gravity under the flat Friedmann-Lema\^{i}tre-Robertson-Walker background in the presence of a scalar field. We consider a non-linear $f(Q)$ model, particularly $f(Q)=-Q+\alpha ... |
gr-qc/9906076 | Stefan Hollands | S Hollands (U. of York) | The Hadamard Condition for Dirac Fields and Adiabatic States on
Robertson-Walker Spacetimes | 29 pages, Latex, no figures. v2: corrections in the proof of Thm.
IV.1. v3: published version | Commun.Math.Phys. 216 (2001) 635-661 | 10.1007/s002200000350 | null | gr-qc | null | We characterise the homogeneous and isotropic gauge invariant and quasifree
states for free Dirac quantum fields on Robertson-Walker spacetimes in any even
dimension. Using this characterisation, we construct adiabatic vacuum states of
order $n$ corresponding to some Cauchy surface. We then show that any two such
sta... | [
{
"created": "Thu, 17 Jun 1999 14:39:29 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Oct 1999 14:41:23 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Jun 2004 15:51:01 GMT",
"version": "v3"
}
] | 2009-10-31 | [
[
"Hollands",
"S",
"",
"U. of York"
]
] | We characterise the homogeneous and isotropic gauge invariant and quasifree states for free Dirac quantum fields on Robertson-Walker spacetimes in any even dimension. Using this characterisation, we construct adiabatic vacuum states of order $n$ corresponding to some Cauchy surface. We then show that any two such state... |
1006.1472 | Ion I. Cotaescu | Ion I. Cotaescu | The physical meaning of the de Sitter invariants | 22 pages no figures | Gen.Rel.Grav.43:1639-1656,2011 | 10.1007/s10714-011-1145-2 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Lie algebras of the covariant representations transforming the
matter fields under the de Sitter isometries. We point out that the Casimir
operators of these representations can be written in closed forms and we deduce
how their eigenvalues depend on the field's rest energy and spin. For the
scalar, vect... | [
{
"created": "Tue, 8 Jun 2010 07:56:51 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Jun 2010 07:57:03 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Aug 2010 10:00:04 GMT",
"version": "v3"
},
{
"created": "Tue, 14 Dec 2010 09:56:54 GMT",
"version": "v4"
},
{
"cr... | 2011-05-09 | [
[
"Cotaescu",
"Ion I.",
""
]
] | We study the Lie algebras of the covariant representations transforming the matter fields under the de Sitter isometries. We point out that the Casimir operators of these representations can be written in closed forms and we deduce how their eigenvalues depend on the field's rest energy and spin. For the scalar, vector... |
1904.02533 | Angela D. V. Di Virgilio dr | Angela D.V. Di Virgilio, Nicol\`o Beverini, Giorgio Carelli, Donatella
Ciampini, Francesco Fuso, and Enrico Maccioni | Analysis of ring laser gyroscopes including laser dynamics | 9 pages and 7 figures | Eur. Phys. J. C (2019) 79: 573 | 10.1140/epjc/s10052-019-7089-5 | null | gr-qc physics.ins-det physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inertial sensors stimulate very large interest, not only for their
application but also for fundamental physics tests. Ring laser gyros, which
measure angular rotation rate, are certainly among the most sensitive inertial
sensors, with excellent dynamic range and bandwidth. Large area ring laser
gyros are routinely a... | [
{
"created": "Thu, 4 Apr 2019 13:15:22 GMT",
"version": "v1"
}
] | 2020-08-10 | [
[
"Di Virgilio",
"Angela D. V.",
""
],
[
"Beverini",
"Nicolò",
""
],
[
"Carelli",
"Giorgio",
""
],
[
"Ciampini",
"Donatella",
""
],
[
"Fuso",
"Francesco",
""
],
[
"Maccioni",
"Enrico",
""
]
] | Inertial sensors stimulate very large interest, not only for their application but also for fundamental physics tests. Ring laser gyros, which measure angular rotation rate, are certainly among the most sensitive inertial sensors, with excellent dynamic range and bandwidth. Large area ring laser gyros are routinely abl... |
gr-qc/0005067 | Raul Vera | Jose M. M. Senovilla and Raul Vera | Cylindrically symmetric dust spacetime | LaTeX, 6 pages, 1 figure. Uses epsfig package. Submitted to Classical
and Quantum Gravity | Class.Quant.Grav. 17 (2000) 2843 | 10.1088/0264-9381/17/14/314 | null | gr-qc | null | We present an explicit exact solution of Einstein's equations for an
inhomogeneous dust universe with cylindrical symmetry. The spacetime is
extremely simple but nonetheless it has new surprising features. The universe
is ``closed'' in the sense that the dust expands from a big-bang singularity
but recollapses to a b... | [
{
"created": "Tue, 16 May 2000 15:02:27 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Senovilla",
"Jose M. M.",
""
],
[
"Vera",
"Raul",
""
]
] | We present an explicit exact solution of Einstein's equations for an inhomogeneous dust universe with cylindrical symmetry. The spacetime is extremely simple but nonetheless it has new surprising features. The universe is ``closed'' in the sense that the dust expands from a big-bang singularity but recollapses to a big... |
2401.03558 | Fabiano F. Santos | Fabiano F. Santos and Jackson Levi Said | The cosmic string in Horndeski-like gravity | 5 pages | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Scalar-tensor theories have shown promise in many sectors of cosmology.
However, recent constraints from the speed of gravitational waves have put
severe limits on the breadth of models such classes of theories can realize. In
this work, we explore the possibility of a string-like Horndeski Lagrangian
that is equippe... | [
{
"created": "Sun, 7 Jan 2024 17:51:07 GMT",
"version": "v1"
}
] | 2024-01-09 | [
[
"Santos",
"Fabiano F.",
""
],
[
"Said",
"Jackson Levi",
""
]
] | Scalar-tensor theories have shown promise in many sectors of cosmology. However, recent constraints from the speed of gravitational waves have put severe limits on the breadth of models such classes of theories can realize. In this work, we explore the possibility of a string-like Horndeski Lagrangian that is equipped ... |
gr-qc/0508069 | Xin-Zhou Li | Xiang-hua Zhai and Yi-bin Zhao | A cosmological model with complex scalar field | 7 pages, 2 figure | Nuovo Cim.B120:1007-1016,2005 | 10.1393/ncb/i2005-10154-8 | null | gr-qc | null | In this paper, we wish to point out the possibility of using a complex scalar
field to account for the inflationary stage and the current acceleration. By
the analysis of the dynamical system and numerical work, we show that the
amplitude of the complex scalar field plays the role of the inflaton whereas
the phase is... | [
{
"created": "Wed, 17 Aug 2005 07:29:36 GMT",
"version": "v1"
}
] | 2010-11-11 | [
[
"Zhai",
"Xiang-hua",
""
],
[
"Zhao",
"Yi-bin",
""
]
] | In this paper, we wish to point out the possibility of using a complex scalar field to account for the inflationary stage and the current acceleration. By the analysis of the dynamical system and numerical work, we show that the amplitude of the complex scalar field plays the role of the inflaton whereas the phase is t... |
2401.15795 | Devansh Shukla | Devansh Shukla, Kamlesh Pathak | Neutral particle motion around a Schwarzschild-de Sitter Black Hole in
f(R) gravity | 10 pages, 8 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | This article investigates the presence of a static spherically symmetric
solution in the metric f(R) gravity. Consequently, we have examined the
presence of horizons for the extreme and hyperextreme Schwarzschild-de Sitter
solution. Further, we have investigated the orbital motion of a time-like
particle around the S... | [
{
"created": "Sun, 28 Jan 2024 22:51:40 GMT",
"version": "v1"
}
] | 2024-01-30 | [
[
"Shukla",
"Devansh",
""
],
[
"Pathak",
"Kamlesh",
""
]
] | This article investigates the presence of a static spherically symmetric solution in the metric f(R) gravity. Consequently, we have examined the presence of horizons for the extreme and hyperextreme Schwarzschild-de Sitter solution. Further, we have investigated the orbital motion of a time-like particle around the Sch... |
2211.04106 | Yuri Pavlov | A. A. Grib, Yu. V. Pavlov | On phase transitions near black holes | 7 pages, accepted for publication in JETP Letters | JETP Letters 116 (2022) 493-499 | 10.1134/S0021364022601907 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has been shown that temperatures near the horizon of rotating black holes
can be about the phase transition temperature in the Standard Model with the
Higgs boson. The distance from the horizon and gravitational and
electromagnetic radiation emitted in collisions between particles have been
numerically estimated.
| [
{
"created": "Tue, 8 Nov 2022 09:14:08 GMT",
"version": "v1"
}
] | 2022-11-22 | [
[
"Grib",
"A. A.",
""
],
[
"Pavlov",
"Yu. V.",
""
]
] | It has been shown that temperatures near the horizon of rotating black holes can be about the phase transition temperature in the Standard Model with the Higgs boson. The distance from the horizon and gravitational and electromagnetic radiation emitted in collisions between particles have been numerically estimated. |
1607.03047 | Thomas W. Baumgarte | August J. Miller and Thomas W. Baumgarte | Bondi Accretion in Trumpet Geometries | 14 pages, 5 figures; matches version published in CQG | null | 10.1088/1361-6382/aa51fe | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Bondi solution, which describes the radial inflow of a gas onto a
non-rotating black hole, provides a powerful test for numerical relativistic
codes. However, the Bondi solution is usually derived in Schwarzschild
coordinates, which are not well suited for dynamical spacetime evolutions.
Instead, many current num... | [
{
"created": "Mon, 11 Jul 2016 17:22:03 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jan 2017 14:00:38 GMT",
"version": "v2"
}
] | 2017-01-25 | [
[
"Miller",
"August J.",
""
],
[
"Baumgarte",
"Thomas W.",
""
]
] | The Bondi solution, which describes the radial inflow of a gas onto a non-rotating black hole, provides a powerful test for numerical relativistic codes. However, the Bondi solution is usually derived in Schwarzschild coordinates, which are not well suited for dynamical spacetime evolutions. Instead, many current numer... |
1905.08350 | Felipe Asenjo | Felipe A. Asenjo and Sergio A. Hojman | Correspondence between dark energy quantum cosmology and Maxwell
equations | null | null | 10.1140/epjc/s10052-019-7252-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A Friedmann-Robertson-Walker cosmology with dark energy can be modelled using
a quintessence field. That system is equivalent to a relativistic particle
moving on a two-dimensional conformal spacetime. When the quintessence behaves
as a free massless scalar field in a Universe with cosmological constant, the
quantize... | [
{
"created": "Mon, 20 May 2019 21:19:46 GMT",
"version": "v1"
},
{
"created": "Sat, 24 Aug 2019 00:48:06 GMT",
"version": "v2"
}
] | 2019-10-02 | [
[
"Asenjo",
"Felipe A.",
""
],
[
"Hojman",
"Sergio A.",
""
]
] | A Friedmann-Robertson-Walker cosmology with dark energy can be modelled using a quintessence field. That system is equivalent to a relativistic particle moving on a two-dimensional conformal spacetime. When the quintessence behaves as a free massless scalar field in a Universe with cosmological constant, the quantized ... |
1302.1860 | Ian Morrison | Ian A. Morrison | On cosmic hair and "de Sitter breaking" in linearized quantum gravity | 40 p., 4 figures. v2: minor typos corrected, some clarifying comments
added. Results unchanged | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We quantize linearized Einstein-Hilbert gravity on de Sitter backgrounds in a
covariant gauge. We verify the existence of a maximally-symmetric (i.e.de
Sitter-invariant) Hadamard state $\Omega$ for all globally hyperbolic de Sitter
backgrounds in all spacetime dimensions $D \ge 4$ by constructing the state's
2-point ... | [
{
"created": "Thu, 7 Feb 2013 20:52:10 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Jul 2013 10:43:36 GMT",
"version": "v2"
}
] | 2013-07-04 | [
[
"Morrison",
"Ian A.",
""
]
] | We quantize linearized Einstein-Hilbert gravity on de Sitter backgrounds in a covariant gauge. We verify the existence of a maximally-symmetric (i.e.de Sitter-invariant) Hadamard state $\Omega$ for all globally hyperbolic de Sitter backgrounds in all spacetime dimensions $D \ge 4$ by constructing the state's 2-point fu... |
1601.06773 | Gopi Kant Goswami Dr | G. K. Goswami, R. N. Dewangan, A. K. Yadav and A. Pradhan | Anisotropic String Cosmological Models in Heckmann-Suchuking Space-Time | 12pages,8figures | Astrophys. Space Sci. 361, 47 (2016) | 10.1007/s10509-015-2629-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the present work we have searched the existence of the late time
acceleration of the universe with string fluid as source of matter in
anisotropic Heckmann-Suchking space-time by using 287 high red shift $(0.3 \leq
z\leq 1.4)$ SN Ia data of observed absolute magnitude along with their possible
error from Union 2.1... | [
{
"created": "Sun, 24 Jan 2016 09:40:31 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Jan 2016 16:37:51 GMT",
"version": "v2"
}
] | 2020-03-04 | [
[
"Goswami",
"G. K.",
""
],
[
"Dewangan",
"R. N.",
""
],
[
"Yadav",
"A. K.",
""
],
[
"Pradhan",
"A.",
""
]
] | In the present work we have searched the existence of the late time acceleration of the universe with string fluid as source of matter in anisotropic Heckmann-Suchking space-time by using 287 high red shift $(0.3 \leq z\leq 1.4)$ SN Ia data of observed absolute magnitude along with their possible error from Union 2.1 c... |
2108.04117 | Shailesh Kulkarni | Sashideep Gutti, Shailesh Kulkarni, Vaishak Prasad, Sheldon Suresh | Ecosystem for Closed Timelike Curves: An Energy Conditions Perspective | 12 pages, modified version, typos corrected | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this article, we explore the relationship between the existence of closed
timelike curves and energy conditions that occur in the Kerr-Newman spacetime.
To quantify the dependence, we define a correlation index between energy
conditions and closed timelike curves. Based on the inputs from Hawking's
chronology prot... | [
{
"created": "Mon, 9 Aug 2021 15:35:47 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Aug 2021 14:06:46 GMT",
"version": "v2"
}
] | 2021-08-24 | [
[
"Gutti",
"Sashideep",
""
],
[
"Kulkarni",
"Shailesh",
""
],
[
"Prasad",
"Vaishak",
""
],
[
"Suresh",
"Sheldon",
""
]
] | In this article, we explore the relationship between the existence of closed timelike curves and energy conditions that occur in the Kerr-Newman spacetime. To quantify the dependence, we define a correlation index between energy conditions and closed timelike curves. Based on the inputs from Hawking's chronology protec... |
1506.08015 | Parampreet Singh | Alejandro Corichi, Parampreet Singh | Loop quantization of the Schwarzschild interior revisited | Revised version. Comparison with Ashtekar-Bojowald quantization
expanded. A figure showing dependence of the white hole mass on the fiducial
cell in Ashtekar-Bojowald quantization added. To appear in CQG | Class. Quantum Grav. 33 (2016) 055006 | 10.1088/0264-9381/33/5/055006 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The loop quantization of the Schwarzschild interior region, as described by a
homogeneous anisotropic Kantowski-Sachs model, is re-examined. As several
studies of different -inequivalent- loop quantizations have shown, to date
there exists no fully satisfactory quantum theory for this model. This fact
poses challenge... | [
{
"created": "Fri, 26 Jun 2015 10:01:38 GMT",
"version": "v1"
},
{
"created": "Tue, 22 Dec 2015 15:12:19 GMT",
"version": "v2"
}
] | 2016-02-15 | [
[
"Corichi",
"Alejandro",
""
],
[
"Singh",
"Parampreet",
""
]
] | The loop quantization of the Schwarzschild interior region, as described by a homogeneous anisotropic Kantowski-Sachs model, is re-examined. As several studies of different -inequivalent- loop quantizations have shown, to date there exists no fully satisfactory quantum theory for this model. This fact poses challenges ... |
2212.06970 | Ahmed Roman | Ahmed Roman, Asem Hassan, Mohamed ElKabbash | Measuring gravitational force from Femto-gram source masses | null | null | null | null | gr-qc hep-ph | http://creativecommons.org/licenses/by/4.0/ | Gravity is the weakest of all known forces. Measuring the force of gravity
from micro and nano-scale source masses is an essential first step toward
low-energy quantum gravity tests. In addition, measuring gravitational forces
where the center-of-mass inter-distance is at the sub-mm scale extends the
experimentally a... | [
{
"created": "Wed, 14 Dec 2022 01:31:45 GMT",
"version": "v1"
},
{
"created": "Thu, 2 Mar 2023 21:45:18 GMT",
"version": "v2"
}
] | 2023-03-06 | [
[
"Roman",
"Ahmed",
""
],
[
"Hassan",
"Asem",
""
],
[
"ElKabbash",
"Mohamed",
""
]
] | Gravity is the weakest of all known forces. Measuring the force of gravity from micro and nano-scale source masses is an essential first step toward low-energy quantum gravity tests. In addition, measuring gravitational forces where the center-of-mass inter-distance is at the sub-mm scale extends the experimentally ach... |
gr-qc/0109021 | Filipe Mena | Brien C. Nolan (DCU, Dublin), Filipe C. Mena (QM, London) and Sergio
M. C. V. Goncalves (Caltech) | Comment on ``Strength and genericity of singularities in Tolman-Bondi-de
Sitter collapse'' and a note on central singularities | 3 pages, revtex4, submitted to Phys. Lett. A | Phys.Lett. A294 (2002) 122-125 | 10.1016/S0375-9601(02)00037-3 | null | gr-qc | null | It has been claimed that the Lemaitre-Tolman-Bondi-de Sitter solution always
admits future-pointing radial time-like geodesics emerging from the
shell-focussing singularity, regardless of the nature of the (regular) initial
data. This is despite the fact that some data rule out the emergence of future
pointing radial... | [
{
"created": "Thu, 6 Sep 2001 11:43:56 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Nolan",
"Brien C.",
"",
"DCU, Dublin"
],
[
"Mena",
"Filipe C.",
"",
"QM, London"
],
[
"Goncalves",
"Sergio M. C. V.",
"",
"Caltech"
]
] | It has been claimed that the Lemaitre-Tolman-Bondi-de Sitter solution always admits future-pointing radial time-like geodesics emerging from the shell-focussing singularity, regardless of the nature of the (regular) initial data. This is despite the fact that some data rule out the emergence of future pointing radial n... |
2108.11400 | Nithyanandan Thyagarajan | Joseph Samuel, Rajaram Nityananda, Nithyanandan Thyagarajan | Invariants in Polarimetric Interferometry: a non-Abelian Gauge Theory | 8 pages (including references), 1 figure, and 5 appendices. Accepted
(in press) in Physical Review Letters. Contains appendices and some text not
included in the journal version that give more connections to gauge theory
and geometric/Pancharatnam phase. See also companion paper arXiv:2108.11399 | Physical Review Letters, 128, 091101 (2022) | 10.1103/PhysRevLett.128.091101 | null | gr-qc astro-ph.IM math-ph math.MP physics.class-ph physics.optics | http://creativecommons.org/licenses/by-sa/4.0/ | The discovery of magnetic fields close to the M87 black hole using Very Long
Baseline Interferometry (VLBI) by the Event Horizon Telescope collaboration
utilized the novel concept of "closure traces", that are immune to
element-based aberrations. We take a fundamentally new approach to this
promising tool of polarime... | [
{
"created": "Wed, 25 Aug 2021 18:00:16 GMT",
"version": "v1"
},
{
"created": "Fri, 27 Aug 2021 04:40:58 GMT",
"version": "v2"
},
{
"created": "Tue, 1 Feb 2022 05:52:17 GMT",
"version": "v3"
}
] | 2022-03-01 | [
[
"Samuel",
"Joseph",
""
],
[
"Nityananda",
"Rajaram",
""
],
[
"Thyagarajan",
"Nithyanandan",
""
]
] | The discovery of magnetic fields close to the M87 black hole using Very Long Baseline Interferometry (VLBI) by the Event Horizon Telescope collaboration utilized the novel concept of "closure traces", that are immune to element-based aberrations. We take a fundamentally new approach to this promising tool of polarimetr... |
1610.04370 | Takuya Tsuchiya | Takuya Tsuchiya and Gen Yoneda | Constraint-Preserving Scheme for Maxwell's Equations | 18 pages, 9 figures | null | null | null | gr-qc math.DS math.NA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the discretized Maxwell's equations using the discrete variational
derivative method (DVDM), calculate the evolution equation of the constraint,
and confirm that the equation is satisfied at the discrete level. Numerical
simulations showed that the results obtained by the DVDM are superior to those
obtained... | [
{
"created": "Fri, 14 Oct 2016 08:51:58 GMT",
"version": "v1"
},
{
"created": "Wed, 26 Oct 2016 13:29:07 GMT",
"version": "v2"
}
] | 2016-10-27 | [
[
"Tsuchiya",
"Takuya",
""
],
[
"Yoneda",
"Gen",
""
]
] | We derive the discretized Maxwell's equations using the discrete variational derivative method (DVDM), calculate the evolution equation of the constraint, and confirm that the equation is satisfied at the discrete level. Numerical simulations showed that the results obtained by the DVDM are superior to those obtained b... |
1902.07874 | Che-Yu Chen | Mariam Bouhmadi-L\'opez, Suddhasattwa Brahma, Che-Yu Chen, Pisin Chen,
Dong-han Yeom | Asymptotic non-flatness of an effective black hole model based on loop
quantum gravity | 12 pages, 1 figure. Details included. Updated to match the published
version | Phys.Dark Univ. 30 (2020) 100701 | 10.1016/j.dark.2020.100701 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For any non-rotating effective quantum (uncharged) black hole model to be
viable, its asymptotic structure of spacetime should reduce to that of a
Schwarzschild black hole. After examining the asymptotic structure of quantum
black holes proposed in Ashtekar et al., (2018), we find that the solution is
actually not as... | [
{
"created": "Thu, 21 Feb 2019 05:45:51 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Mar 2019 04:49:33 GMT",
"version": "v2"
},
{
"created": "Thu, 7 May 2020 16:19:19 GMT",
"version": "v3"
},
{
"created": "Tue, 4 Aug 2020 12:25:00 GMT",
"version": "v4"
}
] | 2020-08-05 | [
[
"Bouhmadi-López",
"Mariam",
""
],
[
"Brahma",
"Suddhasattwa",
""
],
[
"Chen",
"Che-Yu",
""
],
[
"Chen",
"Pisin",
""
],
[
"Yeom",
"Dong-han",
""
]
] | For any non-rotating effective quantum (uncharged) black hole model to be viable, its asymptotic structure of spacetime should reduce to that of a Schwarzschild black hole. After examining the asymptotic structure of quantum black holes proposed in Ashtekar et al., (2018), we find that the solution is actually not asym... |
gr-qc/0303083 | Jacek Syska | Marek Biesiada | Epicyclic orbital oscillations in Newton's and Einstein's gravity from
the geodesic deviation equation | 7 pages, submitted to Gen.Relat.Grav | Gen.Rel.Grav. 35 (2003) 1503-1510 | 10.1023/A:1024599021730 | null | gr-qc | null | In a recent paper Abramowicz and Klu{\'z}niak have discussed the problem of
epicyclic oscillations in Newton's and Einstein's dynamics and have shown that
Newton's dynamics in a properly curved three-dimensional space is identical to
test-body dynamics in the three-dimensional optical geometry of Schwarzschild
space-... | [
{
"created": "Fri, 21 Mar 2003 13:54:53 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Biesiada",
"Marek",
""
]
] | In a recent paper Abramowicz and Klu{\'z}niak have discussed the problem of epicyclic oscillations in Newton's and Einstein's dynamics and have shown that Newton's dynamics in a properly curved three-dimensional space is identical to test-body dynamics in the three-dimensional optical geometry of Schwarzschild space-ti... |
gr-qc/0002088 | Vitaly Melnikov | A.D. Alexeev, K.A. Bronnikov, N.I. Kolosnitsyn, M.Yu. Konstantinov,
V.N. Melnikov and A.J. Sanders | See Project for Testing Gravity in Space: Current Status and New
Estimates | 12 pages, 3 figures | Grav.Cosmol. 5 (1999) 67-78 | null | null | gr-qc | null | We describe some new estimates concerning the recently proposed SEE
(Satellite Energy Exchange) experiment for measuring the gravitational
interaction parameters in space. The experiment entails precision tracking of
the relative motion of two test bodies (a heavy "Shepherd", and a light
"Particle") on board a drag-f... | [
{
"created": "Fri, 25 Feb 2000 10:31:24 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Alexeev",
"A. D.",
""
],
[
"Bronnikov",
"K. A.",
""
],
[
"Kolosnitsyn",
"N. I.",
""
],
[
"Konstantinov",
"M. Yu.",
""
],
[
"Melnikov",
"V. N.",
""
],
[
"Sanders",
"A. J.",
""
]
] | We describe some new estimates concerning the recently proposed SEE (Satellite Energy Exchange) experiment for measuring the gravitational interaction parameters in space. The experiment entails precision tracking of the relative motion of two test bodies (a heavy "Shepherd", and a light "Particle") on board a drag-fre... |
1209.3403 | Martin Bojowald | Martin Bojowald | Quantum Cosmology: Effective Theory | 75 pages, 3 figures, Invited Topical Review | Class. Quantum Grav. 29 (2012) 213001 | 10.1088/0264-9381/29/21/213001 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum cosmology has traditionally been studied at the level of
symmetry-reduced minisuperspace models, analyzing the behavior of wave
functions. However, in the absence of a complete full setting of quantum
gravity and detailed knowledge of specific properties of quantum states, it
remained difficult to make testab... | [
{
"created": "Sat, 15 Sep 2012 13:21:14 GMT",
"version": "v1"
}
] | 2012-09-18 | [
[
"Bojowald",
"Martin",
""
]
] | Quantum cosmology has traditionally been studied at the level of symmetry-reduced minisuperspace models, analyzing the behavior of wave functions. However, in the absence of a complete full setting of quantum gravity and detailed knowledge of specific properties of quantum states, it remained difficult to make testable... |
1612.09254 | Emmanuil Saridakis | Mohsen Khodadi, Kourosh Nozari, Emmanuel N. Saridakis | Emergent universe in theories with natural UV cutoffs | 9 pages, 5 figures, version published in Class.Quant.Grav | Class.Quant.Grav. 35 (2018) 015010 | 10.1088/1361-6382/aa95aa | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the realization of the emergent universe scenario in theories
with natural UV cutoffs, namely a minimum length and a maximum momentum,
quantified by a new deformation parameter in the generalized uncertainty
principle. We extract the Einstein static universe solutions and we examine
their stability thr... | [
{
"created": "Thu, 29 Dec 2016 19:27:17 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Oct 2017 19:15:02 GMT",
"version": "v2"
}
] | 2017-12-07 | [
[
"Khodadi",
"Mohsen",
""
],
[
"Nozari",
"Kourosh",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We investigate the realization of the emergent universe scenario in theories with natural UV cutoffs, namely a minimum length and a maximum momentum, quantified by a new deformation parameter in the generalized uncertainty principle. We extract the Einstein static universe solutions and we examine their stability throu... |
1908.11794 | Shuxun Tian | S. X. Tian and Zong-Hong Zhu | Testing the Schwarzschild metric in a strong field region with the Event
Horizon Telescope | 14 pages, 9 figures, PRD accepted | Phys. Rev. D 100, 064011 (2019) | 10.1103/PhysRevD.100.064011 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Testing gravity theory in the strong field region becomes a reality due to
the observations of gravitational waves and black hole shadows. In this paper,
we discuss how to constrain the possible deviations of the classical general
relativity with the image of M87* observed by the Event Horizon Telescope. More
precise... | [
{
"created": "Fri, 30 Aug 2019 15:36:22 GMT",
"version": "v1"
}
] | 2019-09-10 | [
[
"Tian",
"S. X.",
""
],
[
"Zhu",
"Zong-Hong",
""
]
] | Testing gravity theory in the strong field region becomes a reality due to the observations of gravitational waves and black hole shadows. In this paper, we discuss how to constrain the possible deviations of the classical general relativity with the image of M87* observed by the Event Horizon Telescope. More precisely... |
1109.3456 | Mikjel Thorsrud | Sigbj{\o}rn Hervik, David F. Mota, Mikjel Thorsrud | Inflation with stable anisotropic hair: is it cosmologically viable? | 25 pages, 3 figures; v2: Minor changes, refs added; v3: JHEP version
(proof-reading corrections) | JHEP 11 (2011) 146 | 10.1007/JHEP11(2011)146 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently an inflationary model with a vector field coupled to the inflaton
was proposed and the phenomenology studied for the Bianchi type I spacetime. It
was found that the model demonstrates a counter-example to the cosmic no-hair
theorem since there exists a stable anisotropically inflationary fix-point. One
of th... | [
{
"created": "Thu, 15 Sep 2011 20:00:04 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Nov 2011 21:36:05 GMT",
"version": "v2"
},
{
"created": "Wed, 21 Dec 2011 00:10:27 GMT",
"version": "v3"
}
] | 2011-12-22 | [
[
"Hervik",
"Sigbjørn",
""
],
[
"Mota",
"David F.",
""
],
[
"Thorsrud",
"Mikjel",
""
]
] | Recently an inflationary model with a vector field coupled to the inflaton was proposed and the phenomenology studied for the Bianchi type I spacetime. It was found that the model demonstrates a counter-example to the cosmic no-hair theorem since there exists a stable anisotropically inflationary fix-point. One of the ... |
gr-qc/0308065 | Hongwei Yu | Hongwei Yu and Pu-Xun Wu | Quantum fluctuations of lightcone in 4-dimensional spacetime with
parallel plane boundaries | Revtex, 14pages, no figures, to appear in PRD | Phys.Rev. D68 (2003) 084019 | 10.1103/PhysRevD.68.084019 | null | gr-qc hep-th | null | Quantum fluctuations of lightcone are examined in a 4-dimensional spacetime
with two parallel planes. Both the Dirichlet and the Neumann boundary
conditions are considered. In all the cases we have studied, quantum lightcone
fluctuations are greater where the Neumann boundary conditions are imposed,
suggesting that q... | [
{
"created": "Thu, 21 Aug 2003 00:32:57 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Yu",
"Hongwei",
""
],
[
"Wu",
"Pu-Xun",
""
]
] | Quantum fluctuations of lightcone are examined in a 4-dimensional spacetime with two parallel planes. Both the Dirichlet and the Neumann boundary conditions are considered. In all the cases we have studied, quantum lightcone fluctuations are greater where the Neumann boundary conditions are imposed, suggesting that qua... |
1710.06793 | Subenoy Chakraborty | Sourav Haldar, Pritikana Bhandari and Subenoy Chakraborty | Emergent Scenario in first and second order non-equilibrium
thermodynamics and stability analysis | The paper is accepted in Annals of Physics (2017). The authors have
given the answers to the criticism in arXiv:1609.09779[gr-qc]. Also, the
paper disproves their incorrect comments | null | 10.1016/j.aop.2017.10.013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | First and second order non-equilibrium thermodynamics are studied in the
context of particle creation mechanism for homogeneous and isotropic FLRW model
and a general formulation of the emergent scenario is investigated. Finally,
the stability of the non-equilibrium thermodynamics is examined.
| [
{
"created": "Tue, 17 Oct 2017 12:37:22 GMT",
"version": "v1"
}
] | 2017-10-19 | [
[
"Haldar",
"Sourav",
""
],
[
"Bhandari",
"Pritikana",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | First and second order non-equilibrium thermodynamics are studied in the context of particle creation mechanism for homogeneous and isotropic FLRW model and a general formulation of the emergent scenario is investigated. Finally, the stability of the non-equilibrium thermodynamics is examined. |
2203.11952 | Vojtech Witzany | Vojt\v{e}ch Witzany | Action-angle coordinates for black-hole geodesics I: Spherically
symmetric and Schwarzschild | Supplemental materials at
https://github.com/VojtechW/Action-Angle-Schwarzschild | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | Action-angle coordinates are a tool commonly used in celestial mechanics to
systematically parametrize and store general solutions of the equations of
motion of astrophysical bodies. I perturbatively construct action-angle
coordinates for bound test particle motion in static, spherically symmetric
space-times using a... | [
{
"created": "Tue, 22 Mar 2022 18:00:01 GMT",
"version": "v1"
}
] | 2022-03-24 | [
[
"Witzany",
"Vojtěch",
""
]
] | Action-angle coordinates are a tool commonly used in celestial mechanics to systematically parametrize and store general solutions of the equations of motion of astrophysical bodies. I perturbatively construct action-angle coordinates for bound test particle motion in static, spherically symmetric space-times using a p... |
1004.1546 | Sibel Baskal | S. Baskal and H. Kuyrukcu | Kaluza-Klein Reduction of a Quadratic Curvature Model | 10 pages | null | 10.1007/s10714-012-1476-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Palatini variational principle is implemented on a five dimensional quadratic
curvature gravity model, rendering two sets of equations which can be
interpreted as the field equations and the stress-energy tensor. Unification of
gravity with electromagnetism and the scalar dilaton field is achieved through
the Kaluza-... | [
{
"created": "Fri, 9 Apr 2010 12:59:46 GMT",
"version": "v1"
}
] | 2015-05-18 | [
[
"Baskal",
"S.",
""
],
[
"Kuyrukcu",
"H.",
""
]
] | Palatini variational principle is implemented on a five dimensional quadratic curvature gravity model, rendering two sets of equations which can be interpreted as the field equations and the stress-energy tensor. Unification of gravity with electromagnetism and the scalar dilaton field is achieved through the Kaluza-Kl... |
0902.4077 | Yanbei Chen | Drew Keppel, David A. Nichols, Yanbei Chen and Kip S. Thorne | Momentum Flow in Black Hole Binaries: I. Post-Newtonian Analysis of the
Inspiral and Spin-Induced Bobbing | 15 pages, 5 figures and 1 table | Phys.Rev.D80:124015,2009 | 10.1103/PhysRevD.80.124015 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A brief overview is presented of a new Caltech/Cornell research program that
is exploring the nonlinear dynamics of curved spacetime in binary black hole
collisions and mergers, and of an initial project in this program aimed at
elucidating the flow of linear momentum in black-hole binaries (BBHs). The
"gauge-depende... | [
{
"created": "Tue, 24 Feb 2009 07:16:13 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Keppel",
"Drew",
""
],
[
"Nichols",
"David A.",
""
],
[
"Chen",
"Yanbei",
""
],
[
"Thorne",
"Kip S.",
""
]
] | A brief overview is presented of a new Caltech/Cornell research program that is exploring the nonlinear dynamics of curved spacetime in binary black hole collisions and mergers, and of an initial project in this program aimed at elucidating the flow of linear momentum in black-hole binaries (BBHs). The "gauge-dependenc... |
1606.09606 | Dr. Sudhaker Upadhyay | Sudhaker Upadhyay | Super-group field cosmology in Batalin-Vilkovisky formulation | 9 pages, published in Int J Theor Phys | Int J Theor Phys 55, 4005 (2016) | 10.1007/s10773-016-3029-4 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the third quantized super-group field cosmology, a
model in multiverse scenario, in Batalin-Vilkovisky (BV) formulation. Further,
we propose the superfield/super-antifield dependent BRST symmetry
transformations. Within this formulation, we establish connection between the
two different soluti... | [
{
"created": "Fri, 24 Jun 2016 16:00:32 GMT",
"version": "v1"
}
] | 2016-08-15 | [
[
"Upadhyay",
"Sudhaker",
""
]
] | In this paper, we study the third quantized super-group field cosmology, a model in multiverse scenario, in Batalin-Vilkovisky (BV) formulation. Further, we propose the superfield/super-antifield dependent BRST symmetry transformations. Within this formulation, we establish connection between the two different solution... |
2110.00353 | Fotis Fronimos | Fotis Fronimos | Kinetic Coupling Corrected Einstein-Gauss-Bonnet Gravity Late-Time
Phenomenology | 11 pages, 8 figures, EPJ Plus Accepted | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this short note we present the dynamics of a general scalar-tensor model,
and in particular a scalar Einstein-Gauss-Bonnet model with a non-minimal
coupling between gravity and the kinetic term of the scalar field. For the sake
of simplicity two $f(R)$ models are studied separately, an exponential and a
power-law,... | [
{
"created": "Fri, 1 Oct 2021 12:37:41 GMT",
"version": "v1"
}
] | 2021-10-04 | [
[
"Fronimos",
"Fotis",
""
]
] | In this short note we present the dynamics of a general scalar-tensor model, and in particular a scalar Einstein-Gauss-Bonnet model with a non-minimal coupling between gravity and the kinetic term of the scalar field. For the sake of simplicity two $f(R)$ models are studied separately, an exponential and a power-law, a... |
1608.06886 | Vee-Liem Saw | Vee-Liem Saw | Behaviour of asymptotically electro-$\Lambda$ spacetimes | 38 pages, this is the full updated manuscript including discussions
using a "Szabados-Tod"-type null tetrad. Accepted by Physical Review D | Phys. Rev. D 95, 084038 (2017) | 10.1103/PhysRevD.95.084038 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the asymptotic solutions for spacetimes with non-zero cosmological
constant $\Lambda$ coupled to Maxwell fields, using the Newman-Penrose
formalism. This extends a recent work that dealt with the vacuum Einstein
(Newman-Penrose) equations with $\Lambda\neq0$. The results are given in two
different null tet... | [
{
"created": "Wed, 24 Aug 2016 16:19:42 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Oct 2016 05:08:11 GMT",
"version": "v2"
},
{
"created": "Thu, 30 Mar 2017 00:44:14 GMT",
"version": "v3"
}
] | 2017-04-25 | [
[
"Saw",
"Vee-Liem",
""
]
] | We present the asymptotic solutions for spacetimes with non-zero cosmological constant $\Lambda$ coupled to Maxwell fields, using the Newman-Penrose formalism. This extends a recent work that dealt with the vacuum Einstein (Newman-Penrose) equations with $\Lambda\neq0$. The results are given in two different null tetra... |
2404.15140 | Suraj Maurya | Suraj Maurya, Sashideep Gutti, and Rahul Nigam | Maximal hypersurfaces and aspects of volume of the Kerr family of black
holes | 17 | Phys. Rev. D 109 124061 (2024) | 10.1103/PhysRevD.109.124061 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In Schwarzschild spacetime, Reinhart (1973) has shown the hypersurface $r_R =
3M/2$ (the subscript stands for "Reinhart") to be a maximal hypersurface. This
Reinhart radius $r_R$ plays a crucial role in evaluating the interior volume of
a black hole. In this article, we find such a maximal hypersurface for the Kerr
a... | [
{
"created": "Tue, 23 Apr 2024 15:45:49 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Jun 2024 16:29:34 GMT",
"version": "v2"
}
] | 2024-07-01 | [
[
"Maurya",
"Suraj",
""
],
[
"Gutti",
"Sashideep",
""
],
[
"Nigam",
"Rahul",
""
]
] | In Schwarzschild spacetime, Reinhart (1973) has shown the hypersurface $r_R = 3M/2$ (the subscript stands for "Reinhart") to be a maximal hypersurface. This Reinhart radius $r_R$ plays a crucial role in evaluating the interior volume of a black hole. In this article, we find such a maximal hypersurface for the Kerr and... |
1808.09815 | Christian Corda Prof. | Christian Corda | Comment on Eur. Phys. J. Plus 133, 261 (2018) by Kholmetskii et al. (The
YARK theory of gravity is wrong) | 8 pages, accepted for publication in The European Physical Journal
Plus | Eur. Phys. J. Plus 133, 456 (2018) | 10.1140/epjp/i2018-12219-3 | null | gr-qc astro-ph.CO hep-th physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that the YARK theory of gravity, proposed in Eur. Phys. J. Plus 133,
261 (2018) by Kholmetskii et al. and in previous papers of the same research
group is wrong.
| [
{
"created": "Tue, 28 Aug 2018 09:08:21 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Sep 2018 07:48:23 GMT",
"version": "v2"
},
{
"created": "Wed, 17 Oct 2018 08:50:55 GMT",
"version": "v3"
}
] | 2018-11-07 | [
[
"Corda",
"Christian",
""
]
] | We show that the YARK theory of gravity, proposed in Eur. Phys. J. Plus 133, 261 (2018) by Kholmetskii et al. and in previous papers of the same research group is wrong. |
2307.01349 | Manas Vishal | Manas Vishal, Scott E. Field, Katie Rink, Sigal Gottlieb, Gaurav
Khanna | Towards exponentially-convergent simulations of extreme-mass-ratio
inspirals: A time-domain solver for the scalar Teukolsky equation with
singular source terms | Version 2 includes proof that our first-order system is symmetric
hyperbolic, scalar energy fluxes for circular orbits in Kerr, and a
correction about our scheme's convergence rate for non-smooth hyperboloidal
layers | null | null | null | gr-qc astro-ph.HE physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational wave signals from extreme mass ratio inspirals are a key target
for space-based gravitational wave detectors. These systems are typically
modeled as a distributionally-forced Teukolsky equation, where the smaller
black hole is treated as a Dirac delta distribution. Time-domain solvers often
use regulari... | [
{
"created": "Mon, 3 Jul 2023 20:49:31 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Dec 2023 17:14:55 GMT",
"version": "v2"
}
] | 2023-12-07 | [
[
"Vishal",
"Manas",
""
],
[
"Field",
"Scott E.",
""
],
[
"Rink",
"Katie",
""
],
[
"Gottlieb",
"Sigal",
""
],
[
"Khanna",
"Gaurav",
""
]
] | Gravitational wave signals from extreme mass ratio inspirals are a key target for space-based gravitational wave detectors. These systems are typically modeled as a distributionally-forced Teukolsky equation, where the smaller black hole is treated as a Dirac delta distribution. Time-domain solvers often use regulariza... |
gr-qc/9905085 | Shinji Mukohyama | Shinji Mukohyama and Sean A. Hayward | Quasi-local first law of black-hole dynamics | Latex, 8 pages; version to appear in Class. Quantum Grav | Class.Quant.Grav. 17 (2000) 2153 | 10.1088/0264-9381/17/10/310 | YITP-99-30 | gr-qc | null | A property well known as the first law of black hole is a relation among
infinitesimal variations of parameters of stationary black holes. We consider a
dynamical version of the first law, which may be called the first law of black
hole dynamics. The first law of black hole dynamics is derived without assuming
any sy... | [
{
"created": "Fri, 21 May 1999 18:51:31 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Apr 2000 20:53:08 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Mukohyama",
"Shinji",
""
],
[
"Hayward",
"Sean A.",
""
]
] | A property well known as the first law of black hole is a relation among infinitesimal variations of parameters of stationary black holes. We consider a dynamical version of the first law, which may be called the first law of black hole dynamics. The first law of black hole dynamics is derived without assuming any symm... |
gr-qc/9703022 | Kirill A. Bronnikov | Kirill A. Bronnikov and Julio Cesar Fabris | Multidimensional Reissner-Nordstrom Problem with a Generalized Maxwell
Field | 9 pages, Latex | Grav.Cosmol.2:306-314,1996 | null | RGS-VNIIMS-96/07 | gr-qc | null | We obtain and study static, spherically symmetric solutions for the Einstein
- generalized Maxwell field system in 2n dimensions, with possible inclusion of
a massless scalar field. The generalization preserves the conformal invariance
of the Maxwell field in higher dimensions. Almost all solutions exhibit naked
sing... | [
{
"created": "Fri, 7 Mar 1997 07:06:58 GMT",
"version": "v1"
}
] | 2011-04-15 | [
[
"Bronnikov",
"Kirill A.",
""
],
[
"Fabris",
"Julio Cesar",
""
]
] | We obtain and study static, spherically symmetric solutions for the Einstein - generalized Maxwell field system in 2n dimensions, with possible inclusion of a massless scalar field. The generalization preserves the conformal invariance of the Maxwell field in higher dimensions. Almost all solutions exhibit naked singul... |
gr-qc/9411011 | Alan Rendall | Alan D. Rendall | Crushing singularities in spacetimes with spherical, plane and
hyperbolic symmetry | 19 pages | Class.Quant.Grav.12:1517-1534,1995 | 10.1088/0264-9381/12/6/017 | IHES/P/94/55 | gr-qc dg-ga math.DG | null | It is shown that the initial singularities in spatially compact spacetimes
with spherical, plane or hyperbolic symmetry admitting a compact constant mean
curvature hypersurface are crushing singularities when the matter content of
spacetime is described by the Vlasov equation (collisionless matter) or the
wave equati... | [
{
"created": "Fri, 4 Nov 1994 14:56:50 GMT",
"version": "v1"
}
] | 2010-04-06 | [
[
"Rendall",
"Alan D.",
""
]
] | It is shown that the initial singularities in spatially compact spacetimes with spherical, plane or hyperbolic symmetry admitting a compact constant mean curvature hypersurface are crushing singularities when the matter content of spacetime is described by the Vlasov equation (collisionless matter) or the wave equation... |
gr-qc/0611089 | Willians Barreto | W. Barreto, B. Rodr\'iguez, L. Rosales and O. Serrano | Self--similar and charged radiating spheres: An anisotropic approach | 12 pages, 8 figures. To appear in Gen. Rel. Grav | Gen.Rel.Grav.39:23-39,2007; Erratum-ibid.39:537-538,2007 | 10.1007/s10714-006-0365-3 10.1007/s10714-007-0405-7 | null | gr-qc | null | Considering charged fluid spheres as anisotropic sources and the diffusion
limit as the transport mechanism, we suppose that the inner space--time admits
self--similarity. Matching the interior solution with the
Reissner--Nordstr\"om--Vaidya exterior one, we find an extremely compact and
oscillatory final state with ... | [
{
"created": "Thu, 16 Nov 2006 16:08:51 GMT",
"version": "v1"
}
] | 2016-08-16 | [
[
"Barreto",
"W.",
""
],
[
"Rodríguez",
"B.",
""
],
[
"Rosales",
"L.",
""
],
[
"Serrano",
"O.",
""
]
] | Considering charged fluid spheres as anisotropic sources and the diffusion limit as the transport mechanism, we suppose that the inner space--time admits self--similarity. Matching the interior solution with the Reissner--Nordstr\"om--Vaidya exterior one, we find an extremely compact and oscillatory final state with a ... |
1301.2016 | Carlos A. Batista da S. Filho | Carlos Batista | On the Weyl Tensor Classification in All Dimensions and its Relation
with Integrability Properties | 16 pages. Published version | Journal of Mathematical Physics 54 (2013), 042502 | 10.1063/1.4802240 | null | gr-qc hep-th math.DG | http://creativecommons.org/licenses/by/3.0/ | In this paper the Weyl tensor is used to define operators that act on the
space of forms. These operators are shown to have interesting properties and
are used to classify the Weyl tensor, the well known Petrov classification
emerging as a special case. Particularly, in the Euclidean signature this
classification tur... | [
{
"created": "Thu, 10 Jan 2013 02:07:59 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Feb 2013 11:49:07 GMT",
"version": "v2"
},
{
"created": "Sat, 27 Apr 2013 14:12:40 GMT",
"version": "v3"
}
] | 2013-04-30 | [
[
"Batista",
"Carlos",
""
]
] | In this paper the Weyl tensor is used to define operators that act on the space of forms. These operators are shown to have interesting properties and are used to classify the Weyl tensor, the well known Petrov classification emerging as a special case. Particularly, in the Euclidean signature this classification turns... |
2406.04417 | Federico Scali | Federico Scali, Oliver Fabio Piattella | Asymptotically Schwarzschild Solutions in $f(R)$ Extension of General
Relativity | 16 pages | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We address the question of how to build a class of $f(R)$ extensions of
General Relativity which are compatible with solar system experiments, without
making any preliminary assumption on the properties of $f$. The aim is reached
by perturbatively solving the modified Einstein equations around a
Schwarzschild backgro... | [
{
"created": "Thu, 6 Jun 2024 18:04:07 GMT",
"version": "v1"
}
] | 2024-06-10 | [
[
"Scali",
"Federico",
""
],
[
"Piattella",
"Oliver Fabio",
""
]
] | We address the question of how to build a class of $f(R)$ extensions of General Relativity which are compatible with solar system experiments, without making any preliminary assumption on the properties of $f$. The aim is reached by perturbatively solving the modified Einstein equations around a Schwarzschild backgroun... |
1510.07856 | Ghanashyam Date | Ghanashyam Date and Sk Jahanur Hoque | Gravitational Waves from Compact Sources in de Sitter Background | 53 pages, 4 figures. Version includes minor corrections and is
matched with the published version | Phys. Rev. D 94, 064039 (2016) | 10.1103/PhysRevD.94.064039 | IMSc/2015/10/07 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The concordance model of cosmology favours a universe with a tiny positive
cosmological constant. A tiniest positive constant curvature, profoundly alters
the asymptotic structure, forcing a re-look at a theory of gravitational
radiation. Even for compact astrophysical sources, the intuition from Minkowski
background... | [
{
"created": "Tue, 27 Oct 2015 10:52:39 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Jun 2016 05:45:51 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Aug 2016 08:50:35 GMT",
"version": "v3"
},
{
"created": "Thu, 15 Sep 2016 09:32:26 GMT",
"version": "v4"
}
] | 2016-09-21 | [
[
"Date",
"Ghanashyam",
""
],
[
"Hoque",
"Sk Jahanur",
""
]
] | The concordance model of cosmology favours a universe with a tiny positive cosmological constant. A tiniest positive constant curvature, profoundly alters the asymptotic structure, forcing a re-look at a theory of gravitational radiation. Even for compact astrophysical sources, the intuition from Minkowski background i... |
1902.01678 | Che-Yu Chen | Che-Yu Chen and Pisin Chen | Gravitational perturbations of non-singular black holes in conformal
gravity | 11 pages, 5 figures | Phys. Rev. D 99, 104003 (2019) | 10.1103/PhysRevD.99.104003 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is believed that in the near future, gravitational wave detections will
become a promising tool not only to test gravity theories, but also to probe
extremely curved spacetime regions in our universe, such as the surroundings of
black holes. In this paper, we investigate the quasinormal modes (QNMs) of the
axial g... | [
{
"created": "Tue, 5 Feb 2019 13:57:52 GMT",
"version": "v1"
},
{
"created": "Tue, 7 May 2019 07:20:49 GMT",
"version": "v2"
}
] | 2019-05-15 | [
[
"Chen",
"Che-Yu",
""
],
[
"Chen",
"Pisin",
""
]
] | It is believed that in the near future, gravitational wave detections will become a promising tool not only to test gravity theories, but also to probe extremely curved spacetime regions in our universe, such as the surroundings of black holes. In this paper, we investigate the quasinormal modes (QNMs) of the axial gra... |
1805.00168 | Daniel Vanzella | Cesar A. Uliana Lima, Frederico Brito, Jos\'e A. Hoyos, and Daniel A.
T. Vanzella | Probing the Unruh effect with an accelerated extended system | 39 pages, 7 figures | Nature Communications, volume 10, Article number: 3030 (2019) | 10.1038/s41467-019-10962-y | null | gr-qc cond-mat.stat-mech quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has been proved in the context of quantum fields in Minkowski spacetime
that the vacuum state is a thermal state according to uniformly accelerated
observers -- a seminal result known as the Unruh effect. Recent claims,
however, have challenged the validity of this result for extended systems, thus
casting doubts ... | [
{
"created": "Tue, 1 May 2018 03:11:11 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Jul 2019 03:38:34 GMT",
"version": "v2"
}
] | 2019-07-16 | [
[
"Lima",
"Cesar A. Uliana",
""
],
[
"Brito",
"Frederico",
""
],
[
"Hoyos",
"José A.",
""
],
[
"Vanzella",
"Daniel A. T.",
""
]
] | It has been proved in the context of quantum fields in Minkowski spacetime that the vacuum state is a thermal state according to uniformly accelerated observers -- a seminal result known as the Unruh effect. Recent claims, however, have challenged the validity of this result for extended systems, thus casting doubts on... |
1504.00375 | Tarun Biswas | Tarun Biswas | Freely Falling Finite Frames Near a Black Hole | 9 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well-known that the Riemann curvature tensor has no discontinuity at
the black hole horizon. It is also well-known that a freely falling observer
takes finite time to reach the horizon from an outside point. However, the
usual assumption is that such an observer resides in a frame of reference
(spaceship) of in... | [
{
"created": "Wed, 1 Apr 2015 20:27:46 GMT",
"version": "v1"
},
{
"created": "Mon, 15 Aug 2016 20:55:20 GMT",
"version": "v2"
}
] | 2016-08-17 | [
[
"Biswas",
"Tarun",
""
]
] | It is well-known that the Riemann curvature tensor has no discontinuity at the black hole horizon. It is also well-known that a freely falling observer takes finite time to reach the horizon from an outside point. However, the usual assumption is that such an observer resides in a frame of reference (spaceship) of infi... |
gr-qc/9807054 | Sardanashvily Gennadi | G.Giachetta, L.Mangiarotti and G.Sardanashvily | Energy-Momentum and Gauge Conservation Laws | 19 pages, LaTeX | Grav.Cosmol. 5 (1999) 92-100 | null | null | gr-qc | null | We treat energy-momentum conservation laws as particular gauge conservation
laws when generators of gauge transformations are horizontal vector fields on
fibre bundles. In particular, the generators of general covariant
transformations are the canonical horizontal prolongations of vector fields on
a world manifold. T... | [
{
"created": "Mon, 20 Jul 1998 16:13:41 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Giachetta",
"G.",
""
],
[
"Mangiarotti",
"L.",
""
],
[
"Sardanashvily",
"G.",
""
]
] | We treat energy-momentum conservation laws as particular gauge conservation laws when generators of gauge transformations are horizontal vector fields on fibre bundles. In particular, the generators of general covariant transformations are the canonical horizontal prolongations of vector fields on a world manifold. Thi... |
1304.4616 | Stefanos Aretakis | Stefanos Aretakis | Nonlinear instability of scalar fields on extremal black holes | 6 pages, 2 figures, to appear in Phys. Rev. D | Phys. Rev. D 87, 084052 (2013) | 10.1103/PhysRevD.87.084052 | null | gr-qc hep-th math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove a new type of finite time blow-up for a class of semilinear wave
equations on extremal black holes. The initial data can be taken to be
arbitrarily close to the trivial data. The first singularity occurs along the
(degenerate) future event horizon. No analogue of this instability occurs for
subextremal black... | [
{
"created": "Tue, 16 Apr 2013 20:39:54 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Aretakis",
"Stefanos",
""
]
] | We prove a new type of finite time blow-up for a class of semilinear wave equations on extremal black holes. The initial data can be taken to be arbitrarily close to the trivial data. The first singularity occurs along the (degenerate) future event horizon. No analogue of this instability occurs for subextremal black h... |
1309.6370 | David Garfinkle | David Garfinkle | Matters of Gravity, The Newsletter of the Topical Group on Gravitation
of the American Physical Society, Volume 42, Fall 2013 | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | GGR News: we hear that..., by David Garfinkle
What's new in LIGO, by David Shoemaker
News from NSF, by Pedro Marronetti
Citation counts and indicies: Beware of bad data, by Clifford Will
Research Briefs: Results from Planck, by William Jones
Conference Reports: Gravity- Strings and Higher Dimensions, by Sim... | [
{
"created": "Tue, 24 Sep 2013 23:33:17 GMT",
"version": "v1"
}
] | 2013-09-26 | [
[
"Garfinkle",
"David",
""
]
] | GGR News: we hear that..., by David Garfinkle What's new in LIGO, by David Shoemaker News from NSF, by Pedro Marronetti Citation counts and indicies: Beware of bad data, by Clifford Will Research Briefs: Results from Planck, by William Jones Conference Reports: Gravity- Strings and Higher Dimensions, by Simon Ross Capr... |
2304.11950 | Edgar Gasperin | Edgar Gasperin and Rafael Pinto | Spin-0 fields and the NP-constants close to spatial infinity in
Minkowski spacetime | 24 pages. Matches published version | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The NP constants of massless spin-0 fields propagating in Minkowski spacetime
are computed close to spatial and null infinity by means of Friedrich's
\emph{$i^0$-cylinder}. Assuming certain regularity condition on the initial
data ensuring that the field extends analytically to the critical sets, it is
shown that the... | [
{
"created": "Mon, 24 Apr 2023 09:37:18 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Aug 2023 15:35:20 GMT",
"version": "v2"
}
] | 2023-08-21 | [
[
"Gasperin",
"Edgar",
""
],
[
"Pinto",
"Rafael",
""
]
] | The NP constants of massless spin-0 fields propagating in Minkowski spacetime are computed close to spatial and null infinity by means of Friedrich's \emph{$i^0$-cylinder}. Assuming certain regularity condition on the initial data ensuring that the field extends analytically to the critical sets, it is shown that the N... |
1308.0040 | Jonathan Ziprick | Laurent Freidel and Jonathan Ziprick | Spinning geometry = Twisted geometry | 22 pages, 5 figures, published version | Class. Quantum Grav. 31 (2014) 045007 | 10.1088/0264-9381/31/4/045007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is well known that the SU(2)-gauge invariant phase space of loop gravity
can be represented in terms of twisted geometries. These are
piecewise-linear-flat geometries obtained by gluing together polyhedra, but the
resulting geometries are not continuous across the faces. Here we show that
this phase space can also... | [
{
"created": "Wed, 31 Jul 2013 21:09:51 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Jan 2014 22:05:56 GMT",
"version": "v2"
}
] | 2015-06-16 | [
[
"Freidel",
"Laurent",
""
],
[
"Ziprick",
"Jonathan",
""
]
] | It is well known that the SU(2)-gauge invariant phase space of loop gravity can be represented in terms of twisted geometries. These are piecewise-linear-flat geometries obtained by gluing together polyhedra, but the resulting geometries are not continuous across the faces. Here we show that this phase space can also b... |
2307.04259 | Yaghoub Heydarzade | Yaghoub Heydarzade and Maryam Ranjbar | Dynamical Wormhole Solutions in Rastall Theory | 24 pages, 8 figures | Eur. Phys. J. Plus 138, 703 (2023) | null | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Wormhole configurations in Einstein's general theory of relativity (GR)
require exotic matter sources violating the weak energy condition (WEC).
Rastall's theory is a generalization of GR in its matter source considering a
nonconserved energy-momentum (EM) tensor. Hence, on one hand, the nature of
this generalization... | [
{
"created": "Sun, 9 Jul 2023 20:18:58 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Jul 2023 07:17:23 GMT",
"version": "v2"
}
] | 2024-01-19 | [
[
"Heydarzade",
"Yaghoub",
""
],
[
"Ranjbar",
"Maryam",
""
]
] | Wormhole configurations in Einstein's general theory of relativity (GR) require exotic matter sources violating the weak energy condition (WEC). Rastall's theory is a generalization of GR in its matter source considering a nonconserved energy-momentum (EM) tensor. Hence, on one hand, the nature of this generalization o... |
gr-qc/0006066 | Jiri Podolsky | K. Vesely, J. Podolsky | Chaos in a modified Henon-Heiles system describing geodesics in
gravitational waves | 11 pages, 7 figures, LaTeX. To appear in Phys. Lett. A | Phys.Lett. A271 (2000) 368-376 | 10.1016/S0375-9601(00)00391-1 | null | gr-qc nlin.CD | null | A Hamiltonian system with a modified Henon-Heiles potential is investigated.
This describes the motion of free test particles in vacuum gravitational
pp-wave spacetimes with both quadratic ("homogeneous") and cubic
("non-homogeneous") terms in the structural function. It is shown that, for
energies above a certain va... | [
{
"created": "Mon, 19 Jun 2000 18:51:28 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Vesely",
"K.",
""
],
[
"Podolsky",
"J.",
""
]
] | A Hamiltonian system with a modified Henon-Heiles potential is investigated. This describes the motion of free test particles in vacuum gravitational pp-wave spacetimes with both quadratic ("homogeneous") and cubic ("non-homogeneous") terms in the structural function. It is shown that, for energies above a certain valu... |
1406.0483 | Joseph Hongchul Bae | Joseph H. Bae | Mixmaster Revisited: Wormhole Solutions to the Bianchi IX Wheeler-DeWitt
Equation using the Euclidean-Signature Semi-Classical Method | 10 pages, 4 figures, added extra Ref., fixed typos, clarified
discussions, added insets to Figures 3 and 4 | 2015 Class. Quantum Grav. 32 075006 | 10.1088/0264-9381/32/7/075006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A modified semi-classical method is used to construct both ground and excited
state solutions to the canonically quantized vacuum Bianchi IX (Mixmaster)
cosmological models. Employing a modified form of the semi-classical Ansatz we
solve the relevant Wheeler-DeWitt equation asymptotically by integrating a set
of line... | [
{
"created": "Mon, 2 Jun 2014 19:24:00 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Nov 2014 16:15:36 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Mar 2015 02:47:17 GMT",
"version": "v3"
}
] | 2015-03-11 | [
[
"Bae",
"Joseph H.",
""
]
] | A modified semi-classical method is used to construct both ground and excited state solutions to the canonically quantized vacuum Bianchi IX (Mixmaster) cosmological models. Employing a modified form of the semi-classical Ansatz we solve the relevant Wheeler-DeWitt equation asymptotically by integrating a set of linear... |
2204.03182 | Ye-Kai Wang | Po-Ning Chen, Mu-Tao Wang, Ye-Kai Wang, Shing-Tung Yau | Supertranslation invariance of angular momentum at null infinity in
double null gauge | null | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The supertranslation invariance of the Chen-Wang-Yau (CWY) angular momentum
in the Bondi-Sachs formalism/gauge was ascertained by the authors in
\cite{CKWWY_evol, CWWY_atmp}. In this article, we study the corresponding
problem in the double null gauge. In particular, supertranslation ambiguity of
this gauge is identi... | [
{
"created": "Thu, 7 Apr 2022 03:23:29 GMT",
"version": "v1"
}
] | 2022-04-08 | [
[
"Chen",
"Po-Ning",
""
],
[
"Wang",
"Mu-Tao",
""
],
[
"Wang",
"Ye-Kai",
""
],
[
"Yau",
"Shing-Tung",
""
]
] | The supertranslation invariance of the Chen-Wang-Yau (CWY) angular momentum in the Bondi-Sachs formalism/gauge was ascertained by the authors in \cite{CKWWY_evol, CWWY_atmp}. In this article, we study the corresponding problem in the double null gauge. In particular, supertranslation ambiguity of this gauge is identifi... |
1005.1780 | Joan Josep Ferrando | Joan Josep Ferrando and Juan Antonio S\'aez | An intrinsic characterization of spherically symmetric spacetimes | 15 pages; submitted to Class. Quantum Grav. | Class.Quant.Grav.27:205024,2010 | 10.1088/0264-9381/27/20/205024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give the necessary and sufficient (local) conditions for a metric tensor
to be a non conformally flat spherically symmetric solution. These conditions
exclusively involve explicit concomitants of the Riemann tensor. As a direct
application we obtain the {\em ideal} labeling of the Schwarzschild,
Reissner-Nordstr\"... | [
{
"created": "Tue, 11 May 2010 09:45:24 GMT",
"version": "v1"
}
] | 2012-04-19 | [
[
"Ferrando",
"Joan Josep",
""
],
[
"Sáez",
"Juan Antonio",
""
]
] | We give the necessary and sufficient (local) conditions for a metric tensor to be a non conformally flat spherically symmetric solution. These conditions exclusively involve explicit concomitants of the Riemann tensor. As a direct application we obtain the {\em ideal} labeling of the Schwarzschild, Reissner-Nordstr\"om... |
2109.05625 | Tereza Vardanyan | Alexander Yu. Kamenshchik, Alexei A. Starobinsky and Tereza Vardanyan | Massive scalar field in de Sitter spacetime: a two-loop calculation and
a comparison with the stochastic approach | Presentation expanded, matches published version | Eur. Phys. J. C 82 (2022) no.4, 345 | 10.1140/epjc/s10052-022-10295-z | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We examine long-wavelength correlation functions of massive scalar fields in
de Sitter spacetime. For the theory with a quartic self-interaction, the
two-point function is calculated up to two loops. Comparing our results with
the Hartree-Fock approximation and with the stochastic approach shows that the
former resum... | [
{
"created": "Sun, 12 Sep 2021 22:27:46 GMT",
"version": "v1"
},
{
"created": "Fri, 12 Nov 2021 18:15:14 GMT",
"version": "v2"
},
{
"created": "Fri, 22 Apr 2022 15:20:03 GMT",
"version": "v3"
}
] | 2022-04-25 | [
[
"Kamenshchik",
"Alexander Yu.",
""
],
[
"Starobinsky",
"Alexei A.",
""
],
[
"Vardanyan",
"Tereza",
""
]
] | We examine long-wavelength correlation functions of massive scalar fields in de Sitter spacetime. For the theory with a quartic self-interaction, the two-point function is calculated up to two loops. Comparing our results with the Hartree-Fock approximation and with the stochastic approach shows that the former resums ... |
1906.12186 | Kimet Jusufi | Kimet Jusufi | Deflection angle of charged massive particles in slowly rotating
Kerr-Newman space-times via Gauss-Bonnet theorem and Hamilton-Jacobi method | 9 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper the problem of gravitational deflection of relativistic charged
massive particles in slowly rotating Kerr-Newman black holes is considered.
Toward this purpose we have used two methods: Firstly, we have applied the
Gauss-Bonnet theorem (GBT) and the optical geometry to evaluate the deflection
angle of c... | [
{
"created": "Wed, 26 Jun 2019 15:55:34 GMT",
"version": "v1"
}
] | 2019-07-01 | [
[
"Jusufi",
"Kimet",
""
]
] | In this paper the problem of gravitational deflection of relativistic charged massive particles in slowly rotating Kerr-Newman black holes is considered. Toward this purpose we have used two methods: Firstly, we have applied the Gauss-Bonnet theorem (GBT) and the optical geometry to evaluate the deflection angle of cha... |
gr-qc/0006090 | Paul M. Alsing | K.K. Nandi, P.M. Alsing, J.C. Evans and T.B. Nayak | Brans-Dicke corrections to the gravitational Sagnac effect | 35 pages, 2 figures, pdf (from MSWord), accepted Physical Review D,
January 2001. (revised from June 25, 2000 version) | Phys.Rev. D63 (2001) 084027 | 10.1103/PhysRevD.63.084027 | null | gr-qc | null | The {\it exact} formulation for the effect of the Brans-Dicke scalar field on
the gravitational corrections to the Sagnac delay in the Jordan and Einstein
frames is presented for the first time. The results completely agree with the
known PPN factors in the weak field region. The calculations also reveal how
the Bran... | [
{
"created": "Mon, 26 Jun 2000 02:42:58 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Feb 2001 04:42:27 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Nandi",
"K. K.",
""
],
[
"Alsing",
"P. M.",
""
],
[
"Evans",
"J. C.",
""
],
[
"Nayak",
"T. B.",
""
]
] | The {\it exact} formulation for the effect of the Brans-Dicke scalar field on the gravitational corrections to the Sagnac delay in the Jordan and Einstein frames is presented for the first time. The results completely agree with the known PPN factors in the weak field region. The calculations also reveal how the Brans-... |
1010.2207 | Dawood Kothawala | Dawood Kothawala | The thermodynamic structure of Einstein tensor | added comments and references; matches final version accepted in
Phys. Rev. D | Phys.Rev.D83:024026,2011 | 10.1103/PhysRevD.83.024026 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the generic structure of Einstein tensor projected onto a 2-D
spacelike surface S defined by unit timelike and spacelike vectors u_i and n_i
respectively, which describe an accelerated observer (see text). Assuming that
flow along u_i defines an approximate Killing vector X_i, we then show that
near the co... | [
{
"created": "Mon, 11 Oct 2010 20:00:05 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Jan 2011 19:22:28 GMT",
"version": "v2"
}
] | 2011-02-01 | [
[
"Kothawala",
"Dawood",
""
]
] | We analyze the generic structure of Einstein tensor projected onto a 2-D spacelike surface S defined by unit timelike and spacelike vectors u_i and n_i respectively, which describe an accelerated observer (see text). Assuming that flow along u_i defines an approximate Killing vector X_i, we then show that near the corr... |
gr-qc/0210093 | J. Alberto Lobo | Eugenio Coccia, Viviana Fafone, Giorgio Frossati, Arlette de Waard,
and J. Alberto Lobo | Resonance widening in spherical GW detectors: model descriptions of the
dissipation processes | 21 pages, 4 EPS figures, LaTeX2e (needs IOP macros), submitted to
Classical and Quantum Gravity | null | null | null | gr-qc | null | Internal friction effects are responsible for line widening of the resonance
frequencies in mechanical oscillators and result in damped oscillations of its
eigenmodes with a decay time Q/\omega. We study the solutions to the equations
of motion for the case of spherical oscillators, to be used as next generation
of a... | [
{
"created": "Mon, 28 Oct 2002 11:09:36 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Coccia",
"Eugenio",
""
],
[
"Fafone",
"Viviana",
""
],
[
"Frossati",
"Giorgio",
""
],
[
"de Waard",
"Arlette",
""
],
[
"Lobo",
"J. Alberto",
""
]
] | Internal friction effects are responsible for line widening of the resonance frequencies in mechanical oscillators and result in damped oscillations of its eigenmodes with a decay time Q/\omega. We study the solutions to the equations of motion for the case of spherical oscillators, to be used as next generation of aco... |
gr-qc/9911033 | Luis Lehner | Luis Lehner | Matching characteristic codes: exploiting two directions | 10 pages, 9 postscript figures. To appear in Int. Journ. of Mod.
Phys. D | Int.J.Mod.Phys.D9:459-474,2000 | 10.1142/S0218271800000451 | null | gr-qc | null | Combining incoming and outgoing characteristic formulations can provide
numerical relativists with a natural implementation of Einstein's equations
that better exploits the causal properties of the spacetime and gives access to
both null infinity and the interior region simultaneously (assuming the
foliation is free ... | [
{
"created": "Tue, 9 Nov 1999 17:58:27 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Lehner",
"Luis",
""
]
] | Combining incoming and outgoing characteristic formulations can provide numerical relativists with a natural implementation of Einstein's equations that better exploits the causal properties of the spacetime and gives access to both null infinity and the interior region simultaneously (assuming the foliation is free of... |
1910.01904 | Amir Hadi Ziaie | Amir Hadi Ziaie and Christian Corda | Wormholes in Poincar\`{e} gauge theory of gravity | 21 pages, 5 figures, To appear in MPLA | Mod. Phys. Lett. A 36, 2150279 (2021) | 10.1142/S0217732321502795 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In the present work, we {study} static spherically symmetric solutions
representing wormhole configurations in Poincar\`{e} gauge theory ({{\sf
PGT}}). The gravitational sector of the Lagrangian is chosen as a subclass of
{\sf PGT} Lagrangians for which, the spin-$0^+$ is the only propagating torsion
mode. The spacet... | [
{
"created": "Wed, 2 Oct 2019 18:09:25 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Dec 2021 18:40:38 GMT",
"version": "v2"
}
] | 2022-02-01 | [
[
"Ziaie",
"Amir Hadi",
""
],
[
"Corda",
"Christian",
""
]
] | In the present work, we {study} static spherically symmetric solutions representing wormhole configurations in Poincar\`{e} gauge theory ({{\sf PGT}}). The gravitational sector of the Lagrangian is chosen as a subclass of {\sf PGT} Lagrangians for which, the spin-$0^+$ is the only propagating torsion mode. The spacetim... |
2105.06870 | Flavio Bombacigno | Flavio Bombacigno, Simon Boudet, Gonzalo J. Olmo and Giovanni Montani | Big-bounce and future time singularity resolution in Bianchi I: the
projective invariant Nieh-Yan case | 17 pages, 9 figures | Phys. Rev. D 103, 124031 (2021) | 10.1103/PhysRevD.103.124031 | null | gr-qc | http://creativecommons.org/licenses/by-nc-sa/4.0/ | We extend the notion of the Nieh-Yan invariant to generic metric-affine
geometries, where both torsion and nonmetricity are taken into account.
Notably, we show that the properties of projective invariance and topologicity
can be independently accommodated by a suitable choice of the parameters
featuring this new Nie... | [
{
"created": "Fri, 14 May 2021 14:55:01 GMT",
"version": "v1"
}
] | 2021-06-16 | [
[
"Bombacigno",
"Flavio",
""
],
[
"Boudet",
"Simon",
""
],
[
"Olmo",
"Gonzalo J.",
""
],
[
"Montani",
"Giovanni",
""
]
] | We extend the notion of the Nieh-Yan invariant to generic metric-affine geometries, where both torsion and nonmetricity are taken into account. Notably, we show that the properties of projective invariance and topologicity can be independently accommodated by a suitable choice of the parameters featuring this new Nieh-... |
gr-qc/0504081 | Pengzi Miao | Pengzi Miao | A Remark on Boundary Effects in Static Vacuum Initial Data sets | 10 pages, to be published in Classical and Quantum Gravity | Class.Quant.Grav. 22 (2005) L53-L59 | 10.1088/0264-9381/22/11/L01 | null | gr-qc | null | Let (M, g) be an asymptotically flat static vacuum initial data set with
non-empty compact boundary. We prove that (M, g) is isometric to a spacelike
slice of a Schwarzschild spacetime under the mere assumption that the boundary
of (M, g) has zero mean curvature, hence generalizing a classic result of
Bunting and Mas... | [
{
"created": "Tue, 19 Apr 2005 06:58:13 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Miao",
"Pengzi",
""
]
] | Let (M, g) be an asymptotically flat static vacuum initial data set with non-empty compact boundary. We prove that (M, g) is isometric to a spacelike slice of a Schwarzschild spacetime under the mere assumption that the boundary of (M, g) has zero mean curvature, hence generalizing a classic result of Bunting and Masoo... |
2312.03070 | Marc Schneider | F. Del Porro, M. Herrero-Valea, S. Liberati, M. Schneider | Rescuing the Unruh Effect in Lorentz Violating Gravity | 30 pages, 6 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | While the robustness of Hawking radiation in the presence of UV Lorentz
breaking is well-established, the Unruh effect has posed a challenge, with a
large literature concluding that even the low-energy restoration of Lorentz
invariance may not be sufficient to sustain this phenomenon. Notably, these
previous studies ... | [
{
"created": "Tue, 5 Dec 2023 19:00:04 GMT",
"version": "v1"
}
] | 2023-12-07 | [
[
"Del Porro",
"F.",
""
],
[
"Herrero-Valea",
"M.",
""
],
[
"Liberati",
"S.",
""
],
[
"Schneider",
"M.",
""
]
] | While the robustness of Hawking radiation in the presence of UV Lorentz breaking is well-established, the Unruh effect has posed a challenge, with a large literature concluding that even the low-energy restoration of Lorentz invariance may not be sufficient to sustain this phenomenon. Notably, these previous studies ha... |
2109.11437 | Teng Zhang | Teng Zhang, Denis Martynov, Stefan Danilishin, Haixing Miao | Enhancing high frequency sensitivity of gravitational wave detectors
with sloshing-Sagnac interferometer | null | null | 10.1103/PhysRevD.104.122003 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Sensitivity of gravitational-wave detectors is limited in the high-frequency
band by quantum shot noise and eventually limited by the optical loss in signal
recycling cavity. This limit is the main obstacle on the way to detect
gravitational waves from the binary neutron star mergers in the current and the
future gen... | [
{
"created": "Thu, 23 Sep 2021 15:26:56 GMT",
"version": "v1"
}
] | 2022-01-05 | [
[
"Zhang",
"Teng",
""
],
[
"Martynov",
"Denis",
""
],
[
"Danilishin",
"Stefan",
""
],
[
"Miao",
"Haixing",
""
]
] | Sensitivity of gravitational-wave detectors is limited in the high-frequency band by quantum shot noise and eventually limited by the optical loss in signal recycling cavity. This limit is the main obstacle on the way to detect gravitational waves from the binary neutron star mergers in the current and the future gener... |
2112.13391 | Shin'ichi Nojiri | G. G. L. Nashed and Shin'ichi Nojiri | Isotropic compact stars in 4-dimensional Einstein-Gauss-Bonnet gravity
coupled with scalar field -- Reconstruction of model | LaTeX 17 pages, version to appear in EPJC | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Recently, it has been supposed that the Einstein-Gauss- Bonnet theory coupled
with scalar field (EGBS) maybe appropriately admit physically viable models of
celestial phenomena such that the scalar field effect is active in standard
four dimensions. We consider the spherically symmetric and static configuration
of th... | [
{
"created": "Sun, 26 Dec 2021 14:51:34 GMT",
"version": "v1"
},
{
"created": "Wed, 5 Jan 2022 01:22:25 GMT",
"version": "v2"
},
{
"created": "Tue, 27 Dec 2022 14:18:16 GMT",
"version": "v3"
}
] | 2022-12-29 | [
[
"Nashed",
"G. G. L.",
""
],
[
"Nojiri",
"Shin'ichi",
""
]
] | Recently, it has been supposed that the Einstein-Gauss- Bonnet theory coupled with scalar field (EGBS) maybe appropriately admit physically viable models of celestial phenomena such that the scalar field effect is active in standard four dimensions. We consider the spherically symmetric and static configuration of the ... |
0712.4393 | Alan Kostelecky | Alan Kostelecky, Neil Russell, and Jay Tasson | Constraints on Torsion from Lorentz Violation | 4 pages two-column REVTeX, accepted in Physical Review Letters | Phys.Rev.Lett.100:111102,2008 | 10.1103/PhysRevLett.100.111102 | IUHET 510, December 2007 | gr-qc astro-ph hep-ph | null | Exceptional sensitivity to spacetime torsion can be achieved by searching for
its couplings to fermions. Recent experimental searches for Lorentz violation
are exploited to extract new constraints involving 19 of the 24 independent
torsion components down to levels of order 10^{-31} GeV.
| [
{
"created": "Fri, 28 Dec 2007 19:06:18 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Feb 2008 19:10:38 GMT",
"version": "v2"
}
] | 2009-11-13 | [
[
"Kostelecky",
"Alan",
""
],
[
"Russell",
"Neil",
""
],
[
"Tasson",
"Jay",
""
]
] | Exceptional sensitivity to spacetime torsion can be achieved by searching for its couplings to fermions. Recent experimental searches for Lorentz violation are exploited to extract new constraints involving 19 of the 24 independent torsion components down to levels of order 10^{-31} GeV. |
1506.08918 | Danylo Yerokhin | Yu.L. Bolotin, V.A. Cherkaskiy, O.A. Lemets, D.A. Yerokhin, L.G.
Zazunov | Cosmology In Terms Of The Deceleration Parameter. Part II | 76 pages, 21 figures. arXiv admin note: text overlap with
arXiv:1503.06280, arXiv:1310.7167, arXiv:hep-th/0204008, arXiv:1305.5190,
arXiv:1307.4911, arXiv:1010.0672, arXiv:0704.3121, arXiv:1010.6268,
arXiv:1409.0901 by other authors | null | null | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the early seventies, Alan Sandage defined cosmology as the search for two
numbers: Hubble parameter ${{H}_{0}}$ and deceleration parameter ${{q}_{0}}$.
The first of the two basic cosmological parameters (the Hubble parameter)
describes the linear part of the time dependence of the scale factor. Treating
the Univer... | [
{
"created": "Tue, 30 Jun 2015 02:03:47 GMT",
"version": "v1"
}
] | 2015-07-01 | [
[
"Bolotin",
"Yu. L.",
""
],
[
"Cherkaskiy",
"V. A.",
""
],
[
"Lemets",
"O. A.",
""
],
[
"Yerokhin",
"D. A.",
""
],
[
"Zazunov",
"L. G.",
""
]
] | In the early seventies, Alan Sandage defined cosmology as the search for two numbers: Hubble parameter ${{H}_{0}}$ and deceleration parameter ${{q}_{0}}$. The first of the two basic cosmological parameters (the Hubble parameter) describes the linear part of the time dependence of the scale factor. Treating the Universe... |
1701.02217 | Shabbir Ghulam | Ghulam Shabbir, Muhammad Rafiq | A note on proper affine symmetry in Bianchi types VIII and IX
space-times | 7pages. arXiv admin note: text overlap with arXiv:1309.7464 | University of Politehnica Bucharest Scientific Bulletin Series A,
Applied Mathematics and Physics, Vol. 72, No. (1), (2010) 121-126 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the most general form of Bianchi types VIII and IX space-times
for studying proper affine symmetry by using holonomy and decomposability, the
rank of the 6X6 Riemann matrix and direct integration techniques. Studying
proper affine symmetry in the above space-times it is shown that there exists
only one po... | [
{
"created": "Mon, 9 Jan 2017 15:38:42 GMT",
"version": "v1"
}
] | 2017-01-10 | [
[
"Shabbir",
"Ghulam",
""
],
[
"Rafiq",
"Muhammad",
""
]
] | We consider the most general form of Bianchi types VIII and IX space-times for studying proper affine symmetry by using holonomy and decomposability, the rank of the 6X6 Riemann matrix and direct integration techniques. Studying proper affine symmetry in the above space-times it is shown that there exists only one poss... |
0805.3169 | Andrew Randono | Andrew Randono | A New Perspective on Covariant Canonical Gravity | Version Published in Classical and Quantum Gravity | Class.Quant.Grav.25:235017,2008 | 10.1088/0264-9381/25/23/235017 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new approach to the covariant canonical formulation of
Einstein-Cartan gravity that preserves the full Lorentz group as the local
gauge group. The method exploits lessons learned from gravity in 2+1 dimensions
regarding the relation between gravity and a general gauge theory. The
dynamical variables are ... | [
{
"created": "Tue, 20 May 2008 21:08:03 GMT",
"version": "v1"
},
{
"created": "Wed, 17 Dec 2008 02:38:10 GMT",
"version": "v2"
}
] | 2008-12-18 | [
[
"Randono",
"Andrew",
""
]
] | We present a new approach to the covariant canonical formulation of Einstein-Cartan gravity that preserves the full Lorentz group as the local gauge group. The method exploits lessons learned from gravity in 2+1 dimensions regarding the relation between gravity and a general gauge theory. The dynamical variables are si... |
gr-qc/0606013 | W{\l}odzimierz Natorf | Wlodzimierz Natorf, Jacek Tafel | Symmetries of the Robinson-Trautman equation | 8 pages, latex2e, 4 tables, several references added | J.Math.Phys.47:102504,2006 | 10.1063/1.2359139 | null | gr-qc | null | We study point symmetries of the Robinson--Trautman equation. The cases of
one- and two-dimensional algebras of infinitesimal symmetries are discussed in
detail. The corresponding symmetry reductions of the equation are given. Higher
dimensional symmetries are shortly discussed. It turns out that all known exact
solu... | [
{
"created": "Fri, 2 Jun 2006 10:17:48 GMT",
"version": "v1"
},
{
"created": "Sat, 2 Sep 2006 07:39:52 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Natorf",
"Wlodzimierz",
""
],
[
"Tafel",
"Jacek",
""
]
] | We study point symmetries of the Robinson--Trautman equation. The cases of one- and two-dimensional algebras of infinitesimal symmetries are discussed in detail. The corresponding symmetry reductions of the equation are given. Higher dimensional symmetries are shortly discussed. It turns out that all known exact soluti... |
1610.02716 | Etera R. Livine | Etera R. Livine | 3d Quantum Gravity: Coarse-Graining and q-Deformation | 18 pages | Ann. Henri Poincar\'e (2016) | 10.1007/s00023-016-0535-0 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Ponzano-Regge state-sum model provides a quantization of 3d gravity as a
spin foam, providing a quantum amplitude to each 3d triangulation defined in
terms of the 6j-symbol (from the spin-recoupling theory of SU(2)
representations). In this context, the invariance of the 6j-symbol under 4-1
Pachner moves, mathema... | [
{
"created": "Sun, 9 Oct 2016 20:25:32 GMT",
"version": "v1"
}
] | 2016-11-23 | [
[
"Livine",
"Etera R.",
""
]
] | The Ponzano-Regge state-sum model provides a quantization of 3d gravity as a spin foam, providing a quantum amplitude to each 3d triangulation defined in terms of the 6j-symbol (from the spin-recoupling theory of SU(2) representations). In this context, the invariance of the 6j-symbol under 4-1 Pachner moves, mathemati... |
2105.12993 | V. Sreenath | Ivan Agullo, Dimitrios Kranas and V. Sreenath | Anomalies in the Cosmic Microwave Background and their Non-Gaussian
Origin in Loop Quantum Cosmology | 22 pages, 9 figures. Contribution to the Special Issue "Loop Quantum
Cosmology" in Frontiers in Astronomy and Space Sciences, edited by B.
Elizaga-Navascu\'es, G. Mena-Marug\'an, and F. Vidotto | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Anomalies in the cosmic microwave background (CMB) refer to features that
have been observed, mostly at large angular scales, and which show some tension
with the statistical predictions of the standard $\Lambda$CDM model. In this
work, we focus our attention on power suppression, dipolar modulation, a
preference for... | [
{
"created": "Thu, 27 May 2021 08:26:10 GMT",
"version": "v1"
}
] | 2021-05-28 | [
[
"Agullo",
"Ivan",
""
],
[
"Kranas",
"Dimitrios",
""
],
[
"Sreenath",
"V.",
""
]
] | Anomalies in the cosmic microwave background (CMB) refer to features that have been observed, mostly at large angular scales, and which show some tension with the statistical predictions of the standard $\Lambda$CDM model. In this work, we focus our attention on power suppression, dipolar modulation, a preference for o... |
2305.17616 | Ashadul Halder | Ashadul Halder, Shashank Shekhar Pandey, A. S. Majumdar | Future deceleration due to backreaction in a Universe with multiple
inhomogeneous domains | 14 pages, 7 figures | JCAP08(2023)064 | 10.1088/1475-7516/2023/08/064 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We formulate a model of spacetime with inhomogeneous matter distribution in
multiple domains. In the context of the backreaction framework using Buchert's
averaging procedure, we evaluate the effect of backreaction due to the
inhomogeneities on the late time global evolution of the Universe. Examining
the future evol... | [
{
"created": "Sun, 28 May 2023 03:12:55 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Aug 2023 06:05:42 GMT",
"version": "v2"
}
] | 2023-08-29 | [
[
"Halder",
"Ashadul",
""
],
[
"Pandey",
"Shashank Shekhar",
""
],
[
"Majumdar",
"A. S.",
""
]
] | We formulate a model of spacetime with inhomogeneous matter distribution in multiple domains. In the context of the backreaction framework using Buchert's averaging procedure, we evaluate the effect of backreaction due to the inhomogeneities on the late time global evolution of the Universe. Examining the future evolut... |
1011.0678 | Raul Vera | Guillermo A. Gonz\'alez and Ra\"ul Vera | A local characterisation for static charged black holes | LaTeX; 31 pages. Uses iopart style files | Class.Quant.Grav.28:025008,2011 | 10.1088/0264-9381/28/2/025008 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain a purely local characterisation that singles out the
Majumdar-Papapetrou class, the near-horizon Bertotti-Robinson geometry and the
Reissner-Nordstr\"om exterior solution, together with its plane and hyperbolic
counterparts, among the static electrovacuum spacetimes. These five classes are
found to form the... | [
{
"created": "Tue, 2 Nov 2010 17:01:28 GMT",
"version": "v1"
}
] | 2011-03-31 | [
[
"González",
"Guillermo A.",
""
],
[
"Vera",
"Raül",
""
]
] | We obtain a purely local characterisation that singles out the Majumdar-Papapetrou class, the near-horizon Bertotti-Robinson geometry and the Reissner-Nordstr\"om exterior solution, together with its plane and hyperbolic counterparts, among the static electrovacuum spacetimes. These five classes are found to form the w... |
1206.2605 | Martin Bojowald | Martin Bojowald | Quantum gravity, space-time structure, and cosmology | 8 pages, 7 figures, Plenary talk at CosGrav12, held at Indian
Statistical Institute, Kolkata | J. Phys.: Conf. Ser. 405 (2012) 012001 | 10.1088/1742-6596/405/1/012001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A set of diverse but mutually consistent results obtained in different
settings has spawned a new view of loop quantum gravity and its physical
implications, based on the interplay of operator calculations and effective
theory: Quantum corrections modify, but do not destroy, space-time and the
notion of covariance. P... | [
{
"created": "Tue, 12 Jun 2012 17:46:15 GMT",
"version": "v1"
}
] | 2012-12-27 | [
[
"Bojowald",
"Martin",
""
]
] | A set of diverse but mutually consistent results obtained in different settings has spawned a new view of loop quantum gravity and its physical implications, based on the interplay of operator calculations and effective theory: Quantum corrections modify, but do not destroy, space-time and the notion of covariance. Pot... |
gr-qc/0012084 | David Brown | David Brown | Rotational Instabilities in Post-Collapse Stellar Cores | 12 pages, 10 figures; prepared for the proceedings of the workshop on
Astrophysical Sources of Gravitational Radiation | null | null | null | gr-qc astro-ph | null | A core-collapse supernova might produce large amplitude gravitational waves
if, through the collapse process, the inner core can aquire enough rotational
energy to become dynamically unstable. In this report I present the results of
3-D numerical simulations of core collapse supernovae. These simulations
indicate tha... | [
{
"created": "Wed, 20 Dec 2000 21:58:10 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Brown",
"David",
""
]
] | A core-collapse supernova might produce large amplitude gravitational waves if, through the collapse process, the inner core can aquire enough rotational energy to become dynamically unstable. In this report I present the results of 3-D numerical simulations of core collapse supernovae. These simulations indicate that ... |
2012.07147 | Vijay Varma | Vijay Varma, Matthew Mould, Davide Gerosa, Mark A. Scheel, Lawrence E.
Kidder, and Harald P. Pfeiffer | Up-down instability of binary black holes in numerical relativity | Matches PRD version. Animations available at
https://davidegerosa.com/spinprecession | Phys. Rev. D 103, 064003 (2021) | 10.1103/PhysRevD.103.064003 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Binary black holes with spins that are aligned with the orbital angular
momentum do not precess. However, post-Newtonian calculations predict that
"up-down" binaries, in which the spin of the heavier (lighter) black hole is
aligned (antialigned) with the orbital angular momentum, are unstable when the
spins are sligh... | [
{
"created": "Sun, 13 Dec 2020 20:43:28 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Mar 2021 16:47:37 GMT",
"version": "v2"
}
] | 2021-03-10 | [
[
"Varma",
"Vijay",
""
],
[
"Mould",
"Matthew",
""
],
[
"Gerosa",
"Davide",
""
],
[
"Scheel",
"Mark A.",
""
],
[
"Kidder",
"Lawrence E.",
""
],
[
"Pfeiffer",
"Harald P.",
""
]
] | Binary black holes with spins that are aligned with the orbital angular momentum do not precess. However, post-Newtonian calculations predict that "up-down" binaries, in which the spin of the heavier (lighter) black hole is aligned (antialigned) with the orbital angular momentum, are unstable when the spins are slightl... |
2402.16137 | Evgenii Ievlev | Kuan-Nan Lin, Evgenii Ievlev, Michael R.R. Good and Pisin Chen | Classical acceleration temperature from evaporated black hole remnants
and accelerated electron-mirror radiation | 14 pages, 12 figures | Eur. Phys. J. C 84, 641 (2024) | 10.1140/epjc/s10052-024-12991-4 | FTPI-MINN-24-07 | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | We investigate the radiation from accelerating electrons with asymptotic
constant velocity and their analog signatures as evaporating black holes with
left-over remnants. We find high-speed electrons, while having a high
temperature, correspond to low-temperature analog remnants.
| [
{
"created": "Sun, 25 Feb 2024 16:22:06 GMT",
"version": "v1"
}
] | 2024-07-09 | [
[
"Lin",
"Kuan-Nan",
""
],
[
"Ievlev",
"Evgenii",
""
],
[
"Good",
"Michael R. R.",
""
],
[
"Chen",
"Pisin",
""
]
] | We investigate the radiation from accelerating electrons with asymptotic constant velocity and their analog signatures as evaporating black holes with left-over remnants. We find high-speed electrons, while having a high temperature, correspond to low-temperature analog remnants. |
2109.14826 | Elias C. Vagenas | S. Aghababaei, H. Moradpour, Elias C. Vagenas | Hubble tension bounds the GUP and EUP parameters | 5 pages, no figures, to appear in Eur.Phys.J.Plus | Eur. Phys. J. Plus 136, 997 (2021) | 10.1140/epjp/s13360-021-02007-5 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In recent years the discrepancy in the value of the Hubble parameter has been
growing. Recently, there are works supporting the proposal that the uncertainty
principles can solve the Hubble tension. Motivated by this proposal, we work
with an isotropic and homogeneous FRW universe, obtain its Hamiltonian
equations, a... | [
{
"created": "Thu, 30 Sep 2021 03:17:17 GMT",
"version": "v1"
}
] | 2021-10-07 | [
[
"Aghababaei",
"S.",
""
],
[
"Moradpour",
"H.",
""
],
[
"Vagenas",
"Elias C.",
""
]
] | In recent years the discrepancy in the value of the Hubble parameter has been growing. Recently, there are works supporting the proposal that the uncertainty principles can solve the Hubble tension. Motivated by this proposal, we work with an isotropic and homogeneous FRW universe, obtain its Hamiltonian equations, and... |
0909.1367 | Shao-Feng Wu | Shao-Feng Wu, Bin Wang, Xian-Hui Ge, and Guo-Hong Yang | Deriving the gravitational field equation and horizon entropy for
arbitrary diffeomorphism-invariant gravity from spacetime solid | 19 pages, no figure, to be published in Phys. Rev. D | Phys.Rev.D81:044010,2010 | 10.1103/PhysRevD.81.044010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by the analogy between the spacetime and the solid with
inhomogeneous elasticity modulus, we present an alternative method to obtain
the field equation of any diffeomorphism-invariant gravity, by extremizing the
constructed entropy function of the displacement vector field of spacetime
solid. In general sta... | [
{
"created": "Tue, 8 Sep 2009 02:05:50 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Sep 2009 09:29:40 GMT",
"version": "v2"
},
{
"created": "Fri, 5 Feb 2010 01:27:58 GMT",
"version": "v3"
}
] | 2010-04-06 | [
[
"Wu",
"Shao-Feng",
""
],
[
"Wang",
"Bin",
""
],
[
"Ge",
"Xian-Hui",
""
],
[
"Yang",
"Guo-Hong",
""
]
] | Motivated by the analogy between the spacetime and the solid with inhomogeneous elasticity modulus, we present an alternative method to obtain the field equation of any diffeomorphism-invariant gravity, by extremizing the constructed entropy function of the displacement vector field of spacetime solid. In general stati... |
1611.02477 | Dimitris Moustos | Dimitris Moustos, Charis Anastopoulos | Non-Markovian time evolution of an accelerated qubit | 25 pages, 3 figures, minor typos corrected, journal reference added | Phys. Rev. D 95, 025020 (2017) | 10.1103/PhysRevD.95.025020 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new method for evaluating the response of a moving qubit
detector interacting with a scalar field in Minkowski spacetime. We treat the
detector as an open quantum system, but we do not invoke the Markov
approximation. The evolution equations for the qubit density matrix are valid
at all times, for all qu... | [
{
"created": "Tue, 8 Nov 2016 11:17:15 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Jan 2017 22:58:20 GMT",
"version": "v2"
}
] | 2017-02-01 | [
[
"Moustos",
"Dimitris",
""
],
[
"Anastopoulos",
"Charis",
""
]
] | We present a new method for evaluating the response of a moving qubit detector interacting with a scalar field in Minkowski spacetime. We treat the detector as an open quantum system, but we do not invoke the Markov approximation. The evolution equations for the qubit density matrix are valid at all times, for all qubi... |
1509.02171 | Paolo Pani | Paolo Pani, Leonardo Gualtieri, Valeria Ferrari | Tidal Love numbers of a slowly spinning neutron star | v1: 16+11 pages, 6 appendices, 11 figures. v2: improved estimates of
the tidal-spin corrections to the quadrupole moment of spinning neutron-star
binaries approaching the merger. v3: version published in PRD | Phys. Rev. D 92, 124003 (2015) | 10.1103/PhysRevD.92.124003 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | By extending our recent framework to describe the tidal deformations of a
spinning compact object, we compute for the first time the tidal Love numbers
of a spinning neutron star to linear order in the angular momentum. The spin of
the object introduces couplings between electric and magnetic distortions and
new clas... | [
{
"created": "Mon, 7 Sep 2015 20:09:57 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Sep 2015 17:28:00 GMT",
"version": "v2"
},
{
"created": "Wed, 2 Dec 2015 11:36:15 GMT",
"version": "v3"
}
] | 2015-12-03 | [
[
"Pani",
"Paolo",
""
],
[
"Gualtieri",
"Leonardo",
""
],
[
"Ferrari",
"Valeria",
""
]
] | By extending our recent framework to describe the tidal deformations of a spinning compact object, we compute for the first time the tidal Love numbers of a spinning neutron star to linear order in the angular momentum. The spin of the object introduces couplings between electric and magnetic distortions and new classe... |
gr-qc/0305059 | Alan D. Rendall | S. B. Tchapnda, A. D. Rendall | Global existence and asymptotic behaviour in the future for the
Einstein-Vlasov system with positive cosmological constant | null | Class.Quant.Grav. 20 (2003) 3037-3049 | 10.1088/0264-9381/20/14/306 | AEI-2003-045 | gr-qc | null | The behaviour of expanding cosmological models with collisionless matter and
a positive cosmological constant is analysed. It is shown that under the
assumption of plane or hyperbolic symmetry the area radius goes to infinity,
the spacetimes are future geodesically complete, and the expansion becomes
isotropic and ex... | [
{
"created": "Thu, 15 May 2003 14:37:18 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Tchapnda",
"S. B.",
""
],
[
"Rendall",
"A. D.",
""
]
] | The behaviour of expanding cosmological models with collisionless matter and a positive cosmological constant is analysed. It is shown that under the assumption of plane or hyperbolic symmetry the area radius goes to infinity, the spacetimes are future geodesically complete, and the expansion becomes isotropic and expo... |
2310.06946 | Carla Cederbaum | Carla Cederbaum and Markus Wolff | Some new perspectives on the Kruskal--Szekeres extension with
applications to photon surfaces | Comments are very welcome | null | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is a well-known fact that the Schwarzschild spacetime admits a maximal
spacetime extension in null coordinates which extends the exterior
Schwarzschild region past the Killing horizon, called the Kruskal-Szekeres
extension. This method of extending the Schwarzschild spacetime was later
generalized by Brill-Hayward... | [
{
"created": "Tue, 10 Oct 2023 19:07:41 GMT",
"version": "v1"
}
] | 2023-10-12 | [
[
"Cederbaum",
"Carla",
""
],
[
"Wolff",
"Markus",
""
]
] | It is a well-known fact that the Schwarzschild spacetime admits a maximal spacetime extension in null coordinates which extends the exterior Schwarzschild region past the Killing horizon, called the Kruskal-Szekeres extension. This method of extending the Schwarzschild spacetime was later generalized by Brill-Hayward t... |
1805.07595 | S. I. Kruglov | S. I. Kruglov | On a model of magnetically charged black hole with nonlinear
electrodynamics | 15 pages, 5 figures, 1 table | Universe 2018, 4(5), 66 | 10.3390/universe4050066 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Bronnikov model of nonlinear electrodynamics is investigated in general
relativity. The magnetic black hole is considered and we obtain a solution
giving corrections to the Reissner-Nordstr\"{o}m solution. In this model
spacetime at $r\rightarrow\infty$ becomes Minkowski's spacetime. We calculate
the magnetic mas... | [
{
"created": "Sat, 19 May 2018 13:56:31 GMT",
"version": "v1"
}
] | 2018-05-24 | [
[
"Kruglov",
"S. I.",
""
]
] | The Bronnikov model of nonlinear electrodynamics is investigated in general relativity. The magnetic black hole is considered and we obtain a solution giving corrections to the Reissner-Nordstr\"{o}m solution. In this model spacetime at $r\rightarrow\infty$ becomes Minkowski's spacetime. We calculate the magnetic mass ... |
1905.11265 | Bala Subramanian | Chethan Krishnan, Rohit Shekhar, P. N. Bala Subramanian | A Hairy Box in Three Dimensions | v2: minor improvements | null | 10.1016/j.nuclphysb.2020.115115 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this short note, we consider the phases of gravity coupled to a $U(1)$
gauge field and charged scalar in 2+1 dimensions without a cosmological
constant, but with box boundary conditions. This is an extension of the results
in arXiv:1609.01208, but unlike in higher dimensions, here the physics has
sharp differences... | [
{
"created": "Mon, 27 May 2019 14:29:52 GMT",
"version": "v1"
},
{
"created": "Fri, 22 May 2020 17:35:58 GMT",
"version": "v2"
}
] | 2020-08-26 | [
[
"Krishnan",
"Chethan",
""
],
[
"Shekhar",
"Rohit",
""
],
[
"Subramanian",
"P. N. Bala",
""
]
] | In this short note, we consider the phases of gravity coupled to a $U(1)$ gauge field and charged scalar in 2+1 dimensions without a cosmological constant, but with box boundary conditions. This is an extension of the results in arXiv:1609.01208, but unlike in higher dimensions, here the physics has sharp differences f... |
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